subdir('src/nss-resolve')
subdir('src/nss-systemd')
subdir('src/oom')
-subdir('src/partition')
subdir('src/path')
subdir('src/pcrextend')
subdir('src/pcrlock')
subdir('src/random-seed')
subdir('src/rc-local-generator')
subdir('src/remount-fs')
+subdir('src/repart')
subdir('src/reply-password')
subdir('src/resolve')
subdir('src/rfkill')
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root
-Format=erofs
-CopyFiles=/etc/
-Verity=data
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity
-Verity=hash
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity-sig
-Verity=signature
-VerityMatchKey=root
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root
-Format=erofs
-CopyFiles=/
-Verity=data
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity
-Verity=hash
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity-sig
-Verity=signature
-VerityMatchKey=root
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root
-Format=erofs
-CopyFiles=/usr/
-CopyFiles=/opt/
-Verity=data
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity
-Verity=hash
-VerityMatchKey=root
-Minimize=best
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Partition]
-Type=root-verity-sig
-Verity=signature
-VerityMatchKey=root
+++ /dev/null
-# SPDX-License-Identifier: LGPL-2.1-or-later
-
-executables += [
- executable_template + {
- 'name' : 'systemd-repart',
- 'public' : true,
- 'conditions' : ['ENABLE_REPART'],
- 'sources' : files('repart.c'),
- 'link_with' : [
- libshared,
- libshared_fdisk,
- ],
- 'dependencies' : [
- libblkid,
- libfdisk,
- libopenssl,
- threads,
- ],
- },
- executable_template + {
- 'name' : 'systemd-repart.standalone',
- 'public' : have_standalone_binaries,
- 'conditions' : ['ENABLE_REPART'],
- 'sources' : files('repart.c'),
- 'c_args' : '-DSTANDALONE',
- 'link_with' : [
- libbasic_static,
- libshared_fdisk,
- libshared_static,
- libsystemd_static,
- ],
- 'dependencies' : [
- libblkid,
- libfdisk,
- libopenssl,
- threads,
- ],
- 'build_by_default' : have_standalone_binaries,
- 'install' : have_standalone_binaries,
- },
-]
-
-if conf.get('ENABLE_REPART') == 1
- install_data('definitions/confext.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
- install_data('definitions/confext.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
- install_data('definitions/confext.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
- install_data('definitions/portable.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
- install_data('definitions/portable.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
- install_data('definitions/portable.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
- install_data('definitions/sysext.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
- install_data('definitions/sysext.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
- install_data('definitions/sysext.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
-endif
+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-#if HAVE_VALGRIND_MEMCHECK_H
-#include <valgrind/memcheck.h>
-#endif
-
-#include <fcntl.h>
-#include <getopt.h>
-#include <linux/fs.h>
-#include <linux/loop.h>
-#include <sys/file.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-
-#include "sd-device.h"
-#include "sd-id128.h"
-#include "sd-json.h"
-
-#include "alloc-util.h"
-#include "ask-password-api.h"
-#include "blkid-util.h"
-#include "blockdev-list.h"
-#include "blockdev-util.h"
-#include "btrfs-util.h"
-#include "build.h"
-#include "chase.h"
-#include "chattr-util.h"
-#include "conf-files.h"
-#include "conf-parser.h"
-#include "constants.h"
-#include "cryptsetup-util.h"
-#include "device-util.h"
-#include "devnum-util.h"
-#include "dirent-util.h"
-#include "efivars.h"
-#include "errno-util.h"
-#include "fd-util.h"
-#include "fdisk-util.h"
-#include "fileio.h"
-#include "format-table.h"
-#include "format-util.h"
-#include "fs-util.h"
-#include "glyph-util.h"
-#include "gpt.h"
-#include "hexdecoct.h"
-#include "hmac.h"
-#include "id128-util.h"
-#include "initrd-util.h"
-#include "io-util.h"
-#include "json-util.h"
-#include "list.h"
-#include "logarithm.h"
-#include "loop-util.h"
-#include "main-func.h"
-#include "mkdir.h"
-#include "mkfs-util.h"
-#include "mount-util.h"
-#include "mountpoint-util.h"
-#include "nulstr-util.h"
-#include "openssl-util.h"
-#include "parse-argument.h"
-#include "parse-helpers.h"
-#include "pretty-print.h"
-#include "proc-cmdline.h"
-#include "process-util.h"
-#include "random-util.h"
-#include "resize-fs.h"
-#include "rm-rf.h"
-#include "sort-util.h"
-#include "specifier.h"
-#include "stdio-util.h"
-#include "string-table.h"
-#include "string-util.h"
-#include "strv.h"
-#include "sync-util.h"
-#include "terminal-util.h"
-#include "tmpfile-util.h"
-#include "tpm2-pcr.h"
-#include "tpm2-util.h"
-#include "user-util.h"
-#include "utf8.h"
-
-/* If not configured otherwise use a minimal partition size of 10M */
-#define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL)
-
-/* Hard lower limit for new partition sizes */
-#define HARD_MIN_SIZE 4096ULL
-
-/* We know up front we're never going to put more than this in a verity sig partition. */
-#define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL)
-
-/* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */
-#define GPT_METADATA_SIZE (1044ULL*1024ULL)
-
-/* LUKS2 takes off 16M of the partition size with its metadata by default */
-#define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL)
-
-/* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */
-#define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL)
-
-/* LUKS2 volume key size. */
-#define VOLUME_KEY_SIZE (512ULL/8ULL)
-
-/* Use 4K as the default filesystem sector size because as long as the partitions are aligned to 4K, the
- * filesystems will then also be compatible with sector sizes 512, 1024 and 2048. */
-#define DEFAULT_FILESYSTEM_SECTOR_SIZE 4096ULL
-
-#define APIVFS_TMP_DIRS_NULSTR "proc\0sys\0dev\0tmp\0run\0var/tmp\0"
-
-/* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks
- * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B
- * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll
- * waste 3K per partition, which is probably fine. */
-
-typedef enum EmptyMode {
- EMPTY_UNSET, /* no choice has been made yet */
- EMPTY_REFUSE, /* refuse empty disks, never create a partition table */
- EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */
- EMPTY_REQUIRE, /* require an empty disk, create a partition table */
- EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */
- EMPTY_CREATE, /* create disk as loopback file, create a partition table always */
- _EMPTY_MODE_MAX,
- _EMPTY_MODE_INVALID = -EINVAL,
-} EmptyMode;
-
-typedef enum FilterPartitionType {
- FILTER_PARTITIONS_NONE,
- FILTER_PARTITIONS_EXCLUDE,
- FILTER_PARTITIONS_INCLUDE,
- _FILTER_PARTITIONS_MAX,
- _FILTER_PARTITIONS_INVALID = -EINVAL,
-} FilterPartitionsType;
-
-static EmptyMode arg_empty = EMPTY_UNSET;
-static bool arg_dry_run = true;
-static char *arg_node = NULL;
-static char *arg_root = NULL;
-static char *arg_image = NULL;
-static char **arg_definitions = NULL;
-static bool arg_discard = true;
-static bool arg_can_factory_reset = false;
-static int arg_factory_reset = -1;
-static sd_id128_t arg_seed = SD_ID128_NULL;
-static bool arg_randomize = false;
-static int arg_pretty = -1;
-static uint64_t arg_size = UINT64_MAX;
-static bool arg_size_auto = false;
-static sd_json_format_flags_t arg_json_format_flags = SD_JSON_FORMAT_OFF;
-static PagerFlags arg_pager_flags = 0;
-static bool arg_legend = true;
-static void *arg_key = NULL;
-static size_t arg_key_size = 0;
-static char *arg_private_key = NULL;
-static KeySourceType arg_private_key_source_type = OPENSSL_KEY_SOURCE_FILE;
-static char *arg_private_key_source = NULL;
-static char *arg_certificate = NULL;
-static CertificateSourceType arg_certificate_source_type = OPENSSL_CERTIFICATE_SOURCE_FILE;
-static char *arg_certificate_source = NULL;
-static char *arg_tpm2_device = NULL;
-static uint32_t arg_tpm2_seal_key_handle = 0;
-static char *arg_tpm2_device_key = NULL;
-static Tpm2PCRValue *arg_tpm2_hash_pcr_values = NULL;
-static size_t arg_tpm2_n_hash_pcr_values = 0;
-static char *arg_tpm2_public_key = NULL;
-static uint32_t arg_tpm2_public_key_pcr_mask = 0;
-static char *arg_tpm2_pcrlock = NULL;
-static bool arg_split = false;
-static GptPartitionType *arg_filter_partitions = NULL;
-static size_t arg_n_filter_partitions = 0;
-static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE;
-static GptPartitionType *arg_defer_partitions = NULL;
-static size_t arg_n_defer_partitions = 0;
-static uint64_t arg_sector_size = 0;
-static ImagePolicy *arg_image_policy = NULL;
-static Architecture arg_architecture = _ARCHITECTURE_INVALID;
-static int arg_offline = -1;
-static char **arg_copy_from = NULL;
-static char *arg_copy_source = NULL;
-static char *arg_make_ddi = NULL;
-static char *arg_generate_fstab = NULL;
-static char *arg_generate_crypttab = NULL;
-
-STATIC_DESTRUCTOR_REGISTER(arg_node, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep);
-STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep);
-STATIC_DESTRUCTOR_REGISTER(arg_private_key, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_private_key_source, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_certificate, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_certificate_source, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device_key, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_tpm2_hash_pcr_values, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_tpm2_pcrlock, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_defer_partitions, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep);
-STATIC_DESTRUCTOR_REGISTER(arg_copy_from, strv_freep);
-STATIC_DESTRUCTOR_REGISTER(arg_copy_source, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_make_ddi, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_generate_fstab, freep);
-STATIC_DESTRUCTOR_REGISTER(arg_generate_crypttab, freep);
-
-typedef struct FreeArea FreeArea;
-
-typedef enum EncryptMode {
- ENCRYPT_OFF,
- ENCRYPT_KEY_FILE,
- ENCRYPT_TPM2,
- ENCRYPT_KEY_FILE_TPM2,
- _ENCRYPT_MODE_MAX,
- _ENCRYPT_MODE_INVALID = -EINVAL,
-} EncryptMode;
-
-typedef enum VerityMode {
- VERITY_OFF,
- VERITY_DATA,
- VERITY_HASH,
- VERITY_SIG,
- _VERITY_MODE_MAX,
- _VERITY_MODE_INVALID = -EINVAL,
-} VerityMode;
-
-typedef enum MinimizeMode {
- MINIMIZE_OFF,
- MINIMIZE_BEST,
- MINIMIZE_GUESS,
- _MINIMIZE_MODE_MAX,
- _MINIMIZE_MODE_INVALID = -EINVAL,
-} MinimizeMode;
-
-typedef struct PartitionMountPoint {
- char *where;
- char *options;
-} PartitionMountPoint;
-
-static void partition_mountpoint_free_many(PartitionMountPoint *f, size_t n) {
- assert(f || n == 0);
-
- FOREACH_ARRAY(i, f, n) {
- free(i->where);
- free(i->options);
- }
-
- free(f);
-}
-
-typedef struct PartitionEncryptedVolume {
- char *name;
- char *keyfile;
- char *options;
-} PartitionEncryptedVolume;
-
-static PartitionEncryptedVolume* partition_encrypted_volume_free(PartitionEncryptedVolume *c) {
- if (!c)
- return NULL;
-
- free(c->name);
- free(c->keyfile);
- free(c->options);
-
- return mfree(c);
-}
-
-typedef enum SubvolumeFlags {
- SUBVOLUME_RO = 1 << 0,
- _SUBVOLUME_FLAGS_MASK = SUBVOLUME_RO,
- _SUBVOLUME_FLAGS_INVALID = -EINVAL,
- _SUBVOLUME_FLAGS_ERRNO_MAX = -ERRNO_MAX, /* Ensure the whole errno range fits into this enum */
-} SubvolumeFlags;
-
-static SubvolumeFlags subvolume_flags_from_string_one(const char *s) {
- /* This is a bitmask (i.e. not dense), hence we don't use the "string-table.h" stuff here. */
-
- assert(s);
-
- if (streq(s, "ro"))
- return SUBVOLUME_RO;
-
- return _SUBVOLUME_FLAGS_INVALID;
-}
-
-static SubvolumeFlags subvolume_flags_from_string(const char *s) {
- SubvolumeFlags flags = 0;
- int r;
-
- assert(s);
-
- for (;;) {
- _cleanup_free_ char *f = NULL;
- SubvolumeFlags ff;
-
- r = extract_first_word(&s, &f, ",", EXTRACT_DONT_COALESCE_SEPARATORS);
- if (r < 0)
- return r;
- if (r == 0)
- break;
-
- ff = subvolume_flags_from_string_one(f);
- if (ff < 0)
- return -EBADRQC; /* recognizable error */
-
- flags |= ff;
- }
-
- return flags;
-}
-
-typedef struct Subvolume {
- char *path;
- SubvolumeFlags flags;
-} Subvolume;
-
-static Subvolume* subvolume_free(Subvolume *s) {
- if (!s)
- return NULL;
-
- free(s->path);
- return mfree(s);
-}
-
-DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(subvolume_hash_ops, char, path_hash_func, path_compare, Subvolume, subvolume_free);
-
-typedef struct Partition {
- char *definition_path;
- char **drop_in_files;
-
- GptPartitionType type;
- sd_id128_t current_uuid, new_uuid;
- bool new_uuid_is_set;
- char *current_label, *new_label;
- sd_id128_t fs_uuid, luks_uuid, verity_uuid;
- uint8_t verity_salt[SHA256_DIGEST_SIZE];
-
- bool dropped;
- bool factory_reset;
- int32_t priority;
-
- uint32_t weight, padding_weight;
-
- uint64_t current_size, new_size;
- uint64_t size_min, size_max;
-
- uint64_t current_padding, new_padding;
- uint64_t padding_min, padding_max;
-
- uint64_t partno;
- uint64_t offset;
-
- struct fdisk_partition *current_partition;
- struct fdisk_partition *new_partition;
- FreeArea *padding_area;
- FreeArea *allocated_to_area;
-
- char *copy_blocks_path;
- bool copy_blocks_path_is_our_file;
- bool copy_blocks_auto;
- const char *copy_blocks_root;
- int copy_blocks_fd;
- uint64_t copy_blocks_offset;
- uint64_t copy_blocks_size;
- uint64_t copy_blocks_done;
-
- char *format;
- char **copy_files;
- char **exclude_files_source;
- char **exclude_files_target;
- char **make_directories;
- char **make_symlinks;
- OrderedHashmap *subvolumes;
- char *default_subvolume;
- EncryptMode encrypt;
- VerityMode verity;
- char *verity_match_key;
- MinimizeMode minimize;
- uint64_t verity_data_block_size;
- uint64_t verity_hash_block_size;
- char *compression;
- char *compression_level;
-
- uint64_t gpt_flags;
- int no_auto;
- int read_only;
- int growfs;
-
- struct iovec roothash;
-
- char *split_name_format;
- char *split_path;
-
- PartitionMountPoint *mountpoints;
- size_t n_mountpoints;
-
- PartitionEncryptedVolume *encrypted_volume;
-
- char *supplement_for_name;
- struct Partition *supplement_for, *supplement_target_for;
- struct Partition *suppressing;
-
- struct Partition *siblings[_VERITY_MODE_MAX];
-
- LIST_FIELDS(struct Partition, partitions);
-} Partition;
-
-#define PARTITION_IS_FOREIGN(p) (!(p)->definition_path)
-#define PARTITION_EXISTS(p) (!!(p)->current_partition)
-#define PARTITION_SUPPRESSED(p) ((p)->supplement_for && (p)->supplement_for->suppressing == (p))
-
-struct FreeArea {
- Partition *after;
- uint64_t size;
- uint64_t allocated;
-};
-
-typedef struct Context {
- LIST_HEAD(Partition, partitions);
- size_t n_partitions;
-
- FreeArea **free_areas;
- size_t n_free_areas;
-
- uint64_t start, end, total;
-
- struct fdisk_context *fdisk_context;
- uint64_t sector_size, grain_size, fs_sector_size;
-
- sd_id128_t seed;
-
- char *node;
- bool node_is_our_file;
- int backing_fd;
-
- bool from_scratch;
-
- X509 *certificate;
- EVP_PKEY *private_key;
-} Context;
-
-static const char *empty_mode_table[_EMPTY_MODE_MAX] = {
- [EMPTY_UNSET] = "unset",
- [EMPTY_REFUSE] = "refuse",
- [EMPTY_ALLOW] = "allow",
- [EMPTY_REQUIRE] = "require",
- [EMPTY_FORCE] = "force",
- [EMPTY_CREATE] = "create",
-};
-
-static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = {
- [ENCRYPT_OFF] = "off",
- [ENCRYPT_KEY_FILE] = "key-file",
- [ENCRYPT_TPM2] = "tpm2",
- [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2",
-};
-
-static const char *verity_mode_table[_VERITY_MODE_MAX] = {
- [VERITY_OFF] = "off",
- [VERITY_DATA] = "data",
- [VERITY_HASH] = "hash",
- [VERITY_SIG] = "signature",
-};
-
-static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = {
- [MINIMIZE_OFF] = "off",
- [MINIMIZE_BEST] = "best",
- [MINIMIZE_GUESS] = "guess",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP(empty_mode, EmptyMode);
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE);
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode);
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST);
-
-static uint64_t round_down_size(uint64_t v, uint64_t p) {
- return (v / p) * p;
-}
-
-static uint64_t round_up_size(uint64_t v, uint64_t p) {
-
- v = DIV_ROUND_UP(v, p);
-
- if (v > UINT64_MAX / p)
- return UINT64_MAX; /* overflow */
-
- return v * p;
-}
-
-/* calculates the size of a dm-verity hash partition's contents */
-static int calculate_verity_hash_size(
- uint64_t data_bytes,
- uint64_t hash_block_size,
- uint64_t data_block_size,
- uint64_t *ret_bytes) {
-
- /* The calculation here is based on the documented on-disk format of the dm-verity
- * https://docs.kernel.org/admin-guide/device-mapper/verity.html#hash-tree
- *
- * Upstream implementation:
- * https://gitlab.com/cryptsetup/cryptsetup/-/blob/v2.7.5/lib/verity/verity_hash.c */
-
- uint64_t data_blocks = DIV_ROUND_UP(data_bytes, data_block_size);
- if (data_blocks > UINT64_MAX / data_block_size)
- return -EOVERFLOW;
-
- /* hashes that fit in one hash block (node in the merkle tree) */
- uint64_t hashes_per_hash_block = hash_block_size / SHA256_DIGEST_SIZE;
-
- /* initialize with 2 for the root of the merkle tree + the superblock */
- uint64_t hash_blocks = 2;
-
- /* iterate through the levels of the merkle tree bottom up */
- uint64_t remaining_blocks = data_blocks;
-
- while (remaining_blocks > hashes_per_hash_block) {
- uint64_t hash_blocks_for_level;
- /* number of hash blocks required to reference the underlying blocks */
- hash_blocks_for_level = DIV_ROUND_UP(remaining_blocks, hashes_per_hash_block);
-
- if (hash_blocks > UINT64_MAX - hash_blocks_for_level)
- return -EOVERFLOW;
-
- /* add current layer to the total number of hash blocks */
- hash_blocks += hash_blocks_for_level;
- /* hashes on this level serve as the blocks on which the next level is built */
- remaining_blocks = hash_blocks_for_level;
- }
-
- if (hash_blocks > UINT64_MAX / hash_block_size)
- return -EOVERFLOW;
-
- *ret_bytes = hash_blocks * hash_block_size;
-
- return 0;
-}
-
-static Partition *partition_new(void) {
- Partition *p;
-
- p = new(Partition, 1);
- if (!p)
- return NULL;
-
- *p = (Partition) {
- .weight = 1000,
- .padding_weight = 0,
- .current_size = UINT64_MAX,
- .new_size = UINT64_MAX,
- .size_min = UINT64_MAX,
- .size_max = UINT64_MAX,
- .current_padding = UINT64_MAX,
- .new_padding = UINT64_MAX,
- .padding_min = UINT64_MAX,
- .padding_max = UINT64_MAX,
- .partno = UINT64_MAX,
- .offset = UINT64_MAX,
- .copy_blocks_fd = -EBADF,
- .copy_blocks_offset = UINT64_MAX,
- .copy_blocks_size = UINT64_MAX,
- .no_auto = -1,
- .read_only = -1,
- .growfs = -1,
- .verity_data_block_size = UINT64_MAX,
- .verity_hash_block_size = UINT64_MAX,
- };
-
- return p;
-}
-
-static void partition_unlink_supplement(Partition *p) {
- assert(p);
-
- assert(!p->supplement_for || !p->supplement_target_for); /* Can't be both */
-
- if (p->supplement_target_for) {
- assert(p->supplement_target_for->supplement_for == p);
-
- p->supplement_target_for->supplement_for = NULL;
- }
-
- if (p->supplement_for) {
- assert(p->supplement_for->supplement_target_for == p);
- assert(!p->supplement_for->suppressing || p->supplement_for->suppressing == p);
-
- p->supplement_for->supplement_target_for = p->supplement_for->suppressing = NULL;
- }
-
- p->supplement_for_name = mfree(p->supplement_for_name);
- p->supplement_target_for = p->supplement_for = p->suppressing = NULL;
-}
-
-static Partition* partition_free(Partition *p) {
- if (!p)
- return NULL;
-
- free(p->current_label);
- free(p->new_label);
- free(p->definition_path);
- strv_free(p->drop_in_files);
-
- if (p->current_partition)
- fdisk_unref_partition(p->current_partition);
- if (p->new_partition)
- fdisk_unref_partition(p->new_partition);
-
- if (p->copy_blocks_path_is_our_file)
- unlink_and_free(p->copy_blocks_path);
- else
- free(p->copy_blocks_path);
- safe_close(p->copy_blocks_fd);
-
- free(p->format);
- strv_free(p->copy_files);
- strv_free(p->exclude_files_source);
- strv_free(p->exclude_files_target);
- strv_free(p->make_directories);
- strv_free(p->make_symlinks);
- ordered_hashmap_free(p->subvolumes);
- free(p->default_subvolume);
- free(p->verity_match_key);
- free(p->compression);
- free(p->compression_level);
-
- iovec_done(&p->roothash);
-
- free(p->split_name_format);
- unlink_and_free(p->split_path);
-
- partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
- p->mountpoints = NULL;
- p->n_mountpoints = 0;
-
- partition_encrypted_volume_free(p->encrypted_volume);
-
- partition_unlink_supplement(p);
-
- return mfree(p);
-}
-
-static void partition_foreignize(Partition *p) {
- assert(p);
- assert(PARTITION_EXISTS(p));
-
- /* Reset several parameters set through definition file to make the partition foreign. */
-
- p->definition_path = mfree(p->definition_path);
- p->drop_in_files = strv_free(p->drop_in_files);
-
- p->copy_blocks_path = mfree(p->copy_blocks_path);
- p->copy_blocks_fd = safe_close(p->copy_blocks_fd);
- p->copy_blocks_root = NULL;
-
- p->format = mfree(p->format);
- p->copy_files = strv_free(p->copy_files);
- p->exclude_files_source = strv_free(p->exclude_files_source);
- p->exclude_files_target = strv_free(p->exclude_files_target);
- p->make_directories = strv_free(p->make_directories);
- p->make_symlinks = strv_free(p->make_symlinks);
- p->subvolumes = ordered_hashmap_free(p->subvolumes);
- p->default_subvolume = mfree(p->default_subvolume);
- p->verity_match_key = mfree(p->verity_match_key);
- p->compression = mfree(p->compression);
- p->compression_level = mfree(p->compression_level);
-
- p->priority = 0;
- p->weight = 1000;
- p->padding_weight = 0;
- p->size_min = UINT64_MAX;
- p->size_max = UINT64_MAX;
- p->padding_min = UINT64_MAX;
- p->padding_max = UINT64_MAX;
- p->no_auto = -1;
- p->read_only = -1;
- p->growfs = -1;
- p->verity = VERITY_OFF;
-
- partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
- p->mountpoints = NULL;
- p->n_mountpoints = 0;
-
- p->encrypted_volume = partition_encrypted_volume_free(p->encrypted_volume);
-
- partition_unlink_supplement(p);
-}
-
-static bool partition_type_exclude(const GptPartitionType *type) {
- if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE)
- return false;
-
- for (size_t i = 0; i < arg_n_filter_partitions; i++)
- if (sd_id128_equal(type->uuid, arg_filter_partitions[i].uuid))
- return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE;
-
- return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE;
-}
-
-static bool partition_type_defer(const GptPartitionType *type) {
- for (size_t i = 0; i < arg_n_defer_partitions; i++)
- if (sd_id128_equal(type->uuid, arg_defer_partitions[i].uuid))
- return true;
-
- return false;
-}
-
-static Partition* partition_unlink_and_free(Context *context, Partition *p) {
- if (!p)
- return NULL;
-
- LIST_REMOVE(partitions, context->partitions, p);
-
- assert(context->n_partitions > 0);
- context->n_partitions--;
-
- return partition_free(p);
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free);
-
-static Context* context_new(sd_id128_t seed, X509 *certificate, EVP_PKEY *private_key) {
- Context *context;
-
- /* Note: This function takes ownership of the certificate and private_key arguments. */
-
- context = new(Context, 1);
- if (!context)
- return NULL;
-
- *context = (Context) {
- .start = UINT64_MAX,
- .end = UINT64_MAX,
- .total = UINT64_MAX,
- .seed = seed,
- .certificate = certificate,
- .private_key = private_key,
- };
-
- return context;
-}
-
-static void context_free_free_areas(Context *context) {
- assert(context);
-
- for (size_t i = 0; i < context->n_free_areas; i++)
- free(context->free_areas[i]);
-
- context->free_areas = mfree(context->free_areas);
- context->n_free_areas = 0;
-}
-
-static Context* context_free(Context *context) {
- if (!context)
- return NULL;
-
- while (context->partitions)
- partition_unlink_and_free(context, context->partitions);
- assert(context->n_partitions == 0);
-
- context_free_free_areas(context);
-
- if (context->fdisk_context)
- fdisk_unref_context(context->fdisk_context);
-
- safe_close(context->backing_fd);
- if (context->node_is_our_file)
- unlink_and_free(context->node);
- else
- free(context->node);
-
- X509_free(context->certificate);
- EVP_PKEY_free(context->private_key);
-
- return mfree(context);
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free);
-
-static int context_add_free_area(
- Context *context,
- uint64_t size,
- Partition *after) {
-
- FreeArea *a;
-
- assert(context);
- assert(!after || !after->padding_area);
-
- if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1))
- return -ENOMEM;
-
- a = new(FreeArea, 1);
- if (!a)
- return -ENOMEM;
-
- *a = (FreeArea) {
- .size = size,
- .after = after,
- };
-
- context->free_areas[context->n_free_areas++] = a;
-
- if (after)
- after->padding_area = a;
-
- return 0;
-}
-
-static void partition_drop_or_foreignize(Partition *p) {
- if (!p || p->dropped || PARTITION_IS_FOREIGN(p))
- return;
-
- if (PARTITION_EXISTS(p)) {
- log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.",
- strna(p->current_label ?: p->new_label), p->priority);
-
- /* Handle the partition as foreign. Do not set dropped flag. */
- partition_foreignize(p);
- } else {
- log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.",
- p->definition_path, p->priority);
-
- p->dropped = true;
- p->allocated_to_area = NULL;
-
- /* If a supplement partition is dropped, we don't want to merge in its settings. */
- if (PARTITION_SUPPRESSED(p))
- p->supplement_for->suppressing = NULL;
- }
-}
-
-static bool context_drop_or_foreignize_one_priority(Context *context) {
- int32_t priority = 0;
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->dropped)
- continue;
-
- priority = MAX(priority, p->priority);
- }
-
- /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at
- * least one existing priority */
- if (priority <= 0)
- return false;
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->priority < priority)
- continue;
-
- partition_drop_or_foreignize(p);
-
- /* We ensure that all verity sibling partitions have the same priority, so it's safe
- * to drop all siblings here as well. */
-
- for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++)
- partition_drop_or_foreignize(p->siblings[mode]);
- }
-
- return true;
-}
-
-static uint64_t partition_min_size(const Context *context, const Partition *p) {
- uint64_t sz, override_min;
-
- assert(context);
- assert(p);
-
- /* Calculate the disk space we really need at minimum for this partition. If the partition already
- * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less
- * than 4K.
- *
- * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */
-
- if (PARTITION_IS_FOREIGN(p)) {
- /* Don't allow changing size of partitions not managed by us */
- assert(p->current_size != UINT64_MAX);
- return p->current_size;
- }
-
- if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY_SIG, PARTITION_USR_VERITY_SIG))
- return VERITY_SIG_SIZE;
-
- sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE;
-
- if (!PARTITION_EXISTS(p)) {
- uint64_t d = 0;
-
- if (p->encrypt != ENCRYPT_OFF)
- d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size);
-
- if (p->copy_blocks_size != UINT64_MAX)
- d += round_up_size(p->copy_blocks_size, context->grain_size);
- else if (p->format || p->encrypt != ENCRYPT_OFF) {
- uint64_t f;
-
- /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */
- f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX;
- d += f == UINT64_MAX ? context->grain_size : f;
- }
-
- if (d > sz)
- sz = d;
- }
-
- override_min = p->suppressing ? MAX(p->size_min, p->suppressing->size_min) : p->size_min;
-
- return MAX(round_up_size(override_min != UINT64_MAX ? override_min : DEFAULT_MIN_SIZE, context->grain_size), sz);
-}
-
-static uint64_t partition_max_size(const Context *context, const Partition *p) {
- uint64_t sm, override_max;
-
- /* Calculate how large the partition may become at max. This is generally the configured maximum
- * size, except when it already exists and is larger than that. In that case it's the existing size,
- * since we never want to shrink partitions. */
-
- assert(context);
- assert(p);
-
- if (PARTITION_IS_FOREIGN(p)) {
- /* Don't allow changing size of partitions not managed by us */
- assert(p->current_size != UINT64_MAX);
- return p->current_size;
- }
-
- if (p->verity == VERITY_SIG)
- return VERITY_SIG_SIZE;
-
- override_max = p->suppressing ? MIN(p->size_max, p->suppressing->size_max) : p->size_max;
- if (override_max == UINT64_MAX)
- return UINT64_MAX;
-
- sm = round_down_size(override_max, context->grain_size);
-
- if (p->current_size != UINT64_MAX)
- sm = MAX(p->current_size, sm);
-
- return MAX(partition_min_size(context, p), sm);
-}
-
-static uint64_t partition_min_padding(const Partition *p) {
- uint64_t override_min;
-
- assert(p);
-
- override_min = p->suppressing ? MAX(p->padding_min, p->suppressing->padding_min) : p->padding_min;
- return override_min != UINT64_MAX ? override_min : 0;
-}
-
-static uint64_t partition_max_padding(const Partition *p) {
- assert(p);
- return p->suppressing ? MIN(p->padding_max, p->suppressing->padding_max) : p->padding_max;
-}
-
-static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) {
- uint64_t sz;
-
- /* Calculate the disk space we need for this partition plus any free space coming after it. This
- * takes user configured padding into account as well as any additional whitespace needed to align
- * the next partition to 4K again. */
-
- assert(context);
- assert(p);
-
- sz = partition_min_size(context, p) + partition_min_padding(p);
-
- if (PARTITION_EXISTS(p)) {
- /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */
- assert(p->offset != UINT64_MAX);
- return round_up_size(p->offset + sz, context->grain_size) - p->offset;
- }
-
- /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */
- return round_up_size(sz, context->grain_size);
-}
-
-static uint64_t free_area_available(const FreeArea *a) {
- assert(a);
-
- /* Determines how much of this free area is not allocated yet */
-
- assert(a->size >= a->allocated);
- return a->size - a->allocated;
-}
-
-static uint64_t free_area_current_end(Context *context, const FreeArea *a) {
- assert(context);
- assert(a);
-
- if (!a->after)
- return free_area_available(a);
-
- assert(a->after->offset != UINT64_MAX);
- assert(a->after->current_size != UINT64_MAX);
-
- /* Calculate where the free area ends, based on the offset of the partition preceding it. */
- return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a);
-}
-
-static uint64_t free_area_min_end(Context *context, const FreeArea *a) {
- assert(context);
- assert(a);
-
- if (!a->after)
- return 0;
-
- assert(a->after->offset != UINT64_MAX);
- assert(a->after->current_size != UINT64_MAX);
-
- /* Calculate where the partition would end when we give it as much as it needs. */
- return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size);
-}
-
-static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) {
- assert(context);
- assert(a);
-
- /* Similar to free_area_available(), but takes into account that the required size and padding of the
- * preceding partition is honoured. */
-
- return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a));
-}
-
-static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) {
- assert(context);
-
- return CMP(free_area_available_for_new_partitions(context, *a),
- free_area_available_for_new_partitions(context, *b));
-}
-
-static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) {
- assert(context);
- /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */
- assert(amount <= total);
- return LESS_BY(total, round_up_size(amount, context->grain_size));
-}
-
-static uint64_t charge_weight(uint64_t total, uint64_t amount) {
- assert(amount <= total);
- return total - amount;
-}
-
-static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) {
- assert(context);
-
- /* This may be called multiple times. Reset previous assignments. */
- for (size_t i = 0; i < context->n_free_areas; i++)
- context->free_areas[i]->allocated = 0;
-
- /* Sort free areas by size, putting smallest first */
- typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context);
-
- /* In any case return size of the largest free area (i.e. not the size of all free areas
- * combined!) */
- if (ret_largest_free_area)
- *ret_largest_free_area =
- context->n_free_areas == 0 ? 0 :
- free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]);
-
- /* Check that each existing partition can fit its area. */
- for (size_t i = 0; i < context->n_free_areas; i++)
- if (free_area_current_end(context, context->free_areas[i]) <
- free_area_min_end(context, context->free_areas[i]))
- return false;
-
- /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */
- LIST_FOREACH(partitions, p, context->partitions) {
- bool fits = false;
- uint64_t required;
- FreeArea *a = NULL;
-
- if (p->dropped || PARTITION_IS_FOREIGN(p) || PARTITION_SUPPRESSED(p))
- continue;
-
- /* How much do we need to fit? */
- required = partition_min_size_with_padding(context, p);
- assert(required % context->grain_size == 0);
-
- /* For existing partitions, we should verify that they'll actually fit */
- if (PARTITION_EXISTS(p)) {
- if (p->current_size + p->current_padding < required)
- return false; /* 😢 We won't be able to grow to the required min size! */
-
- continue;
- }
-
- /* For new partitions, see if there's a free area big enough */
- for (size_t i = 0; i < context->n_free_areas; i++) {
- a = context->free_areas[i];
-
- if (free_area_available_for_new_partitions(context, a) >= required) {
- fits = true;
- break;
- }
- }
-
- if (!fits)
- return false; /* 😢 Oh no! We can't fit this partition into any free area! */
-
- /* Assign the partition to this free area */
- p->allocated_to_area = a;
-
- /* Budget the minimal partition size */
- a->allocated += required;
- }
-
- return true;
-}
-
-static bool context_unmerge_and_allocate_partitions(Context *context) {
- assert(context);
-
- /* This should only be called after plain context_allocate_partitions fails. This algorithm will
- * try, in the order that minimizes the number of created supplement partitions, all combinations of
- * un-suppressing supplement partitions until it finds one that works. */
-
- /* First, let's try to un-suppress just one supplement partition and see if that gets us anywhere */
- LIST_FOREACH(partitions, p, context->partitions) {
- Partition *unsuppressed;
-
- if (!p->suppressing)
- continue;
-
- unsuppressed = TAKE_PTR(p->suppressing);
-
- if (context_allocate_partitions(context, NULL))
- return true;
-
- p->suppressing = unsuppressed;
- }
-
- /* Looks like not. So we have to un-suppress at least two partitions. We can do this recursively */
- LIST_FOREACH(partitions, p, context->partitions) {
- Partition *unsuppressed;
-
- if (!p->suppressing)
- continue;
-
- unsuppressed = TAKE_PTR(p->suppressing);
-
- if (context_unmerge_and_allocate_partitions(context))
- return true;
-
- p->suppressing = unsuppressed;
- }
-
- /* No combination of un-suppressed supplements made it possible to fit the partitions */
- return false;
-}
-
-static uint32_t partition_weight(const Partition *p) {
- assert(p);
- return p->suppressing ? p->suppressing->weight : p->weight;
-}
-
-static uint32_t partition_padding_weight(const Partition *p) {
- assert(p);
- return p->suppressing ? p->suppressing->padding_weight : p->padding_weight;
-}
-
-static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) {
- uint64_t weight_sum = 0;
-
- assert(context);
- assert(a);
- assert(ret);
-
- /* Determine the sum of the weights of all partitions placed in or before the specified free area */
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->padding_area != a && p->allocated_to_area != a)
- continue;
-
- if (!INC_SAFE(&weight_sum, partition_weight(p)))
- goto overflow_sum;
-
- if (!INC_SAFE(&weight_sum, partition_padding_weight(p)))
- goto overflow_sum;
- }
-
- *ret = weight_sum;
- return 0;
-
-overflow_sum:
- return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64-bit range, refusing.");
-}
-
-static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) {
- assert(weight_sum >= weight);
-
- for (;;) {
- if (weight == 0)
- return 0;
- if (weight == weight_sum)
- return value;
- if (value <= UINT64_MAX / weight)
- return value * weight / weight_sum;
-
- /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the
- * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down:
- * - the sum of scale_by_weight() for all weights must not be larger than the input value,
- * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */
- weight_sum = DIV_ROUND_UP(weight_sum, 2);
- weight /= 2;
- }
-}
-
-typedef enum GrowPartitionPhase {
- /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */
- PHASE_FOREIGN,
-
- /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */
- PHASE_OVERCHARGE,
-
- /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */
- PHASE_UNDERCHARGE,
-
- /* The third phase: we distribute what remains among the remaining partitions, according to the weights */
- PHASE_DISTRIBUTE,
-
- _GROW_PARTITION_PHASE_MAX,
-} GrowPartitionPhase;
-
-static bool context_grow_partitions_phase(
- Context *context,
- FreeArea *a,
- GrowPartitionPhase phase,
- uint64_t *span,
- uint64_t *weight_sum) {
-
- bool try_again = false;
-
- assert(context);
- assert(a);
- assert(span);
- assert(weight_sum);
-
- /* Now let's look at the intended weights and adjust them taking the minimum space assignments into
- * account. i.e. if a partition has a small weight but a high minimum space value set it should not
- * get any additional room from the left-overs. Similar, if two partitions have the same weight they
- * should get the same space if possible, even if one has a smaller minimum size than the other. */
- LIST_FOREACH(partitions, p, context->partitions) {
- /* Look only at partitions associated with this free area, i.e. immediately
- * preceding it, or allocated into it */
- if (p->allocated_to_area != a && p->padding_area != a)
- continue;
-
- if (p->new_size == UINT64_MAX) {
- uint64_t share, rsz, xsz;
- uint32_t weight;
- bool charge = false;
-
- weight = partition_weight(p);
-
- /* Calculate how much this space this partition needs if everyone would get
- * the weight based share */
- share = scale_by_weight(*span, weight, *weight_sum);
-
- rsz = partition_min_size(context, p);
- xsz = partition_max_size(context, p);
-
- if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) {
- /* Never change of foreign partitions (i.e. those we don't manage) */
-
- p->new_size = p->current_size;
- charge = true;
-
- } else if (phase == PHASE_OVERCHARGE && rsz > share) {
- /* This partition needs more than its calculated share. Let's assign
- * it that, and take this partition out of all calculations and start
- * again. */
-
- p->new_size = rsz;
- charge = try_again = true;
-
- } else if (phase == PHASE_UNDERCHARGE && xsz < share) {
- /* This partition accepts less than its calculated
- * share. Let's assign it that, and take this partition out
- * of all calculations and start again. */
-
- p->new_size = xsz;
- charge = try_again = true;
-
- } else if (phase == PHASE_DISTRIBUTE) {
- /* This partition can accept its calculated share. Let's
- * assign it. There's no need to restart things here since
- * assigning this shouldn't impact the shares of the other
- * partitions. */
-
- assert(share >= rsz);
- p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz);
- charge = true;
- }
-
- if (charge) {
- *span = charge_size(context, *span, p->new_size);
- *weight_sum = charge_weight(*weight_sum, weight);
- }
- }
-
- if (p->new_padding == UINT64_MAX) {
- uint64_t share, rsz, xsz;
- uint32_t padding_weight;
- bool charge = false;
-
- padding_weight = partition_padding_weight(p);
-
- share = scale_by_weight(*span, padding_weight, *weight_sum);
-
- rsz = partition_min_padding(p);
- xsz = partition_max_padding(p);
-
- if (phase == PHASE_OVERCHARGE && rsz > share) {
- p->new_padding = rsz;
- charge = try_again = true;
- } else if (phase == PHASE_UNDERCHARGE && xsz < share) {
- p->new_padding = xsz;
- charge = try_again = true;
- } else if (phase == PHASE_DISTRIBUTE) {
- assert(share >= rsz);
- p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz);
- charge = true;
- }
-
- if (charge) {
- *span = charge_size(context, *span, p->new_padding);
- *weight_sum = charge_weight(*weight_sum, padding_weight);
- }
- }
- }
-
- return !try_again;
-}
-
-static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) {
- uint64_t m;
-
- assert(context);
- assert(a);
- assert(p);
- assert(span);
-
- if (*span == 0)
- return;
-
- if (p->allocated_to_area != a)
- return;
-
- if (PARTITION_IS_FOREIGN(p))
- return;
-
- assert(p->new_size != UINT64_MAX);
-
- /* Calculate new size and align. */
- m = round_down_size(p->new_size + *span, context->grain_size);
- /* But ensure this doesn't shrink the size. */
- m = MAX(m, p->new_size);
- /* And ensure this doesn't exceed the maximum size. */
- m = MIN(m, partition_max_size(context, p));
-
- assert(m >= p->new_size);
-
- *span = charge_size(context, *span, m - p->new_size);
- p->new_size = m;
-}
-
-static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) {
- uint64_t weight_sum = 0, span;
- int r;
-
- assert(context);
- assert(a);
-
- r = context_sum_weights(context, a, &weight_sum);
- if (r < 0)
- return r;
-
- /* Let's calculate the total area covered by this free area and the partition before it */
- span = a->size;
- if (a->after) {
- assert(a->after->offset != UINT64_MAX);
- assert(a->after->current_size != UINT64_MAX);
-
- span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset;
- }
-
- for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;)
- if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum))
- phase++; /* go to the next phase */
-
- /* We still have space left over? Donate to preceding partition if we have one */
- if (span > 0 && a->after)
- context_grow_partition_one(context, a, a->after, &span);
-
- /* What? Even still some space left (maybe because there was no preceding partition, or it had a
- * size limit), then let's donate it to whoever wants it. */
- if (span > 0)
- LIST_FOREACH(partitions, p, context->partitions) {
- context_grow_partition_one(context, a, p, &span);
- if (span == 0)
- break;
- }
-
- /* Yuck, still no one? Then make it padding */
- if (span > 0 && a->after) {
- assert(a->after->new_padding != UINT64_MAX);
- a->after->new_padding += span;
- }
-
- return 0;
-}
-
-static int context_grow_partitions(Context *context) {
- int r;
-
- assert(context);
-
- for (size_t i = 0; i < context->n_free_areas; i++) {
- r = context_grow_partitions_on_free_area(context, context->free_areas[i]);
- if (r < 0)
- return r;
- }
-
- /* All existing partitions that have no free space after them can't change size */
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->dropped)
- continue;
-
- if (!PARTITION_EXISTS(p) || p->padding_area) {
- /* The algorithm above must have initialized this already */
- assert(p->new_size != UINT64_MAX);
- continue;
- }
-
- assert(p->new_size == UINT64_MAX);
- p->new_size = p->current_size;
-
- assert(p->new_padding == UINT64_MAX);
- p->new_padding = p->current_padding;
- }
-
- return 0;
-}
-
-static uint64_t find_first_unused_partno(Context *context) {
- uint64_t partno = 0;
-
- assert(context);
-
- for (partno = 0;; partno++) {
- bool found = false;
- LIST_FOREACH(partitions, p, context->partitions)
- if (p->partno != UINT64_MAX && p->partno == partno)
- found = true;
- if (!found)
- break;
- }
-
- return partno;
-}
-
-static void context_place_partitions(Context *context) {
-
- assert(context);
-
- for (size_t i = 0; i < context->n_free_areas; i++) {
- FreeArea *a = context->free_areas[i];
- _unused_ uint64_t left;
- uint64_t start;
-
- if (a->after) {
- assert(a->after->offset != UINT64_MAX);
- assert(a->after->new_size != UINT64_MAX);
- assert(a->after->new_padding != UINT64_MAX);
-
- start = a->after->offset + a->after->new_size + a->after->new_padding;
- } else
- start = context->start;
-
- start = round_up_size(start, context->grain_size);
- left = a->size;
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->allocated_to_area != a)
- continue;
-
- p->offset = start;
- p->partno = find_first_unused_partno(context);
-
- assert(left >= p->new_size);
- start += p->new_size;
- left -= p->new_size;
-
- assert(left >= p->new_padding);
- start += p->new_padding;
- left -= p->new_padding;
- }
- }
-}
-
-static int config_parse_type(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- GptPartitionType *type = ASSERT_PTR(data);
- int r;
-
- assert(rvalue);
-
- r = gpt_partition_type_from_string(rvalue, type);
- if (r < 0)
- return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue);
-
- if (arg_architecture >= 0)
- *type = gpt_partition_type_override_architecture(*type, arg_architecture);
-
- return 0;
-}
-
-static int config_parse_label(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- _cleanup_free_ char *resolved = NULL;
- char **label = ASSERT_PTR(data);
- int r;
-
- assert(rvalue);
-
- /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of
- * assigning the empty string to reset to default here, but really accept it as label to set. */
-
- r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in Label=, ignoring: %s", rvalue);
- return 0;
- }
-
- if (!utf8_is_valid(resolved)) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Partition label not valid UTF-8, ignoring: %s", rvalue);
- return 0;
- }
-
- r = gpt_partition_label_valid(resolved);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")",
- resolved, rvalue);
- return 0;
- }
- if (!r) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")",
- resolved, rvalue);
- return 0;
- }
-
- free_and_replace(*label, resolved);
- return 0;
-}
-
-static int config_parse_weight(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- uint32_t *w = ASSERT_PTR(data), v;
- int r;
-
- assert(rvalue);
-
- r = safe_atou32(rvalue, &v);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to parse weight value, ignoring: %s", rvalue);
- return 0;
- }
-
- if (v > 1000U*1000U) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v);
- return 0;
- }
-
- *w = v;
- return 0;
-}
-
-static int config_parse_size4096(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- uint64_t *sz = data, parsed;
- int r;
-
- assert(rvalue);
- assert(data);
-
- r = parse_size(rvalue, 1024, &parsed);
- if (r < 0)
- return log_syntax(unit, LOG_ERR, filename, line, r,
- "Failed to parse size value: %s", rvalue);
-
- if (ltype > 0)
- *sz = round_up_size(parsed, 4096);
- else if (ltype < 0)
- *sz = round_down_size(parsed, 4096);
- else
- *sz = parsed;
-
- if (*sz != parsed)
- log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.",
- lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz);
-
- return 0;
-}
-
-static int config_parse_block_size(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- uint64_t *blksz = ASSERT_PTR(data), parsed;
- int r;
-
- assert(rvalue);
-
- r = parse_size(rvalue, 1024, &parsed);
- if (r < 0)
- return log_syntax(unit, LOG_ERR, filename, line, r,
- "Failed to parse size value: %s", rvalue);
-
- if (parsed < 512 || parsed > 4096)
- return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
- "Value not between 512 and 4096: %s", rvalue);
-
- if (!ISPOWEROF2(parsed))
- return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
- "Value not a power of 2: %s", rvalue);
-
- *blksz = parsed;
- return 0;
-}
-
-static int config_parse_fstype(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char **fstype = ASSERT_PTR(data);
- const char *e;
-
- assert(rvalue);
-
- /* Let's provide an easy way to override the chosen fstype for file system partitions */
- e = secure_getenv("SYSTEMD_REPART_OVERRIDE_FSTYPE");
- if (e && !streq(rvalue, e)) {
- log_syntax(unit, LOG_NOTICE, filename, line, 0,
- "Overriding defined file system type '%s' with '%s'.", rvalue, e);
- rvalue = e;
- }
-
- if (!filename_is_valid(rvalue))
- return log_syntax(unit, LOG_ERR, filename, line, 0,
- "File system type is not valid, refusing: %s", rvalue);
-
- return free_and_strdup_warn(fstype, rvalue);
-}
-
-static int config_parse_copy_files(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL;
- const char *p = rvalue, *target;
- char ***copy_files = ASSERT_PTR(data);
- int r;
-
- assert(rvalue);
-
- r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
- if (r < 0)
- return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue);
- if (r == 0) {
- log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue);
- return 0;
- }
-
- r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
- if (r < 0)
- return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue);
- if (r == 0)
- target = source; /* No target, then it's the same as the source */
- else
- target = buffer;
-
- if (!isempty(p))
- return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue);
-
- r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue);
- return 0;
- }
-
- r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target);
- return 0;
- }
-
- r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target));
- if (r < 0)
- return log_oom();
-
- return 0;
-}
-
-static int config_parse_exclude_files(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char ***exclude_files = ASSERT_PTR(data);
- const char *p = ASSERT_PTR(rvalue);
- int r;
-
- if (isempty(rvalue)) {
- *exclude_files = strv_free(*exclude_files);
- return 0;
- }
-
- for (;;) {
- _cleanup_free_ char *word = NULL, *resolved = NULL;
-
- r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", p);
- return 0;
- }
- if (r == 0)
- return 0;
-
- r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in %s path, ignoring: %s", lvalue, word);
- return 0;
- }
-
- r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE|PATH_KEEP_TRAILING_SLASH, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0)
- return log_oom();
- }
-
- return 0;
-}
-
-static int config_parse_copy_blocks(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- _cleanup_free_ char *d = NULL;
- Partition *partition = ASSERT_PTR(data);
- int r;
-
- assert(rvalue);
-
- if (isempty(rvalue)) {
- partition->copy_blocks_path = mfree(partition->copy_blocks_path);
- partition->copy_blocks_auto = false;
- return 0;
- }
-
- if (streq(rvalue, "auto")) {
- partition->copy_blocks_path = mfree(partition->copy_blocks_path);
- partition->copy_blocks_auto = true;
- partition->copy_blocks_root = arg_root;
- return 0;
- }
-
- r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue);
- return 0;
- }
-
- r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- free_and_replace(partition->copy_blocks_path, d);
- partition->copy_blocks_auto = false;
- partition->copy_blocks_root = arg_root;
- return 0;
-}
-
-static int config_parse_make_dirs(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char ***sv = ASSERT_PTR(data);
- const char *p = ASSERT_PTR(rvalue);
- int r;
-
- for (;;) {
- _cleanup_free_ char *word = NULL, *d = NULL;
-
- r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
- return 0;
- }
- if (r == 0)
- return 0;
-
- r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word);
- continue;
- }
-
- r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- continue;
-
- if (strv_contains(*sv, d))
- continue;
-
- r = strv_consume(sv, TAKE_PTR(d));
- if (r < 0)
- return log_oom();
- }
-}
-
-static int config_parse_make_symlinks(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char ***sv = ASSERT_PTR(data);
- const char *p = ASSERT_PTR(rvalue);
- int r;
-
- for (;;) {
- _cleanup_free_ char *word = NULL, *path = NULL, *target = NULL, *d = NULL;
-
- r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
- return 0;
- }
- if (r == 0)
- return 0;
-
- const char *q = word;
- r = extract_many_words(&q, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &target);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
- continue;
- }
- if (r != 2) {
- log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL),
- "Missing source or target in %s, ignoring", rvalue);
- continue;
- }
-
- r = specifier_printf(path, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, /*userdata=*/ NULL, &d);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in Subvolumes= parameter, ignoring: %s", path);
- continue;
- }
-
- r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- continue;
-
- r = strv_consume_pair(sv, TAKE_PTR(d), TAKE_PTR(target));
- if (r < 0)
- return log_error_errno(r, "Failed to add symlink to list: %m");
- }
-}
-
-static int config_parse_subvolumes(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- OrderedHashmap **subvolumes = ASSERT_PTR(data);
- const char *p = ASSERT_PTR(rvalue);
- int r;
-
- for (;;) {
- _cleanup_free_ char *word = NULL, *path = NULL, *f = NULL, *d = NULL;
- Subvolume *s = NULL;
-
- r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
- return 0;
- }
- if (r == 0)
- return 0;
-
- const char *q = word;
- r = extract_many_words(&q, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &f);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
- continue;
- }
-
- r = specifier_printf(path, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, /*userdata=*/ NULL, &d);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in Subvolumes= parameter, ignoring: %s", path);
- continue;
- }
-
- r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- continue;
-
- s = ordered_hashmap_get(*subvolumes, d);
- if (!s) {
- s = new(Subvolume, 1);
- if (!s)
- return log_oom();
-
- *s = (Subvolume) {
- .path = TAKE_PTR(d),
- };
-
- r = ordered_hashmap_ensure_put(subvolumes, &subvolume_hash_ops, s->path, s);
- if (r < 0) {
- subvolume_free(s);
- return r;
- }
- }
-
- if (f) {
- SubvolumeFlags flags = subvolume_flags_from_string(f);
- if (flags == -EBADRQC) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Unknown subvolume flag in subvolume, ignoring: %s", f);
- continue;
- }
- if (flags < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse subvolume flags, ignoring: %s", f);
- continue;
- }
-
- s->flags = flags;
- }
- }
-}
-
-static int config_parse_default_subvolume(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char **subvol = ASSERT_PTR(data);
- _cleanup_free_ char *p = NULL;
- int r;
-
- if (isempty(rvalue)) {
- *subvol = mfree(*subvol);
- return 0;
- }
-
- r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &p);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to expand specifiers in DefaultSubvolume= parameter, ignoring: %s", rvalue);
- return 0;
- }
-
- r = path_simplify_and_warn(p, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- return free_and_replace(*subvol, p);
-}
-
-static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF);
-
-static int config_parse_gpt_flags(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- uint64_t *gpt_flags = ASSERT_PTR(data);
- int r;
-
- assert(rvalue);
-
- r = safe_atou64(rvalue, gpt_flags);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to parse Flags= value, ignoring: %s", rvalue);
- return 0;
- }
-
- return 0;
-}
-
-static int config_parse_uuid(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- Partition *partition = ASSERT_PTR(data);
- int r;
-
- if (isempty(rvalue)) {
- partition->new_uuid = SD_ID128_NULL;
- partition->new_uuid_is_set = false;
- return 0;
- }
-
- if (streq(rvalue, "null")) {
- partition->new_uuid = SD_ID128_NULL;
- partition->new_uuid_is_set = true;
- return 0;
- }
-
- r = sd_id128_from_string(rvalue, &partition->new_uuid);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128-bit ID/UUID, ignoring: %s", rvalue);
- return 0;
- }
-
- partition->new_uuid_is_set = true;
-
- return 0;
-}
-
-static int config_parse_mountpoint(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- _cleanup_free_ char *where = NULL, *options = NULL;
- Partition *p = ASSERT_PTR(data);
- int r;
-
- if (isempty(rvalue)) {
- partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
- return 0;
- }
-
- const char *q = rvalue;
- r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS|EXTRACT_UNQUOTE,
- &where, &options);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
- if (r < 1) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Too few arguments in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
- if (!isempty(q)) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Too many arguments in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
-
- r = path_simplify_and_warn(where, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
- if (r < 0)
- return 0;
-
- if (!GREEDY_REALLOC(p->mountpoints, p->n_mountpoints + 1))
- return log_oom();
-
- p->mountpoints[p->n_mountpoints++] = (PartitionMountPoint) {
- .where = TAKE_PTR(where),
- .options = TAKE_PTR(options),
- };
-
- return 0;
-}
-
-static int config_parse_encrypted_volume(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- _cleanup_free_ char *volume = NULL, *keyfile = NULL, *options = NULL;
- Partition *p = ASSERT_PTR(data);
- int r;
-
- if (isempty(rvalue)) {
- p->encrypted_volume = mfree(p->encrypted_volume);
- return 0;
- }
-
- const char *q = rvalue;
- r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS|EXTRACT_UNQUOTE,
- &volume, &keyfile, &options);
- if (r == -ENOMEM)
- return log_oom();
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
- if (r < 1) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Too few arguments in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
- if (!isempty(q)) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Too many arguments in %s=, ignoring: %s", lvalue, rvalue);
- return 0;
- }
-
- if (!filename_is_valid(volume)) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Volume name %s is not valid, ignoring", volume);
- return 0;
- }
-
- partition_encrypted_volume_free(p->encrypted_volume);
-
- p->encrypted_volume = new(PartitionEncryptedVolume, 1);
- if (!p->encrypted_volume)
- return log_oom();
-
- *p->encrypted_volume = (PartitionEncryptedVolume) {
- .name = TAKE_PTR(volume),
- .keyfile = TAKE_PTR(keyfile),
- .options = TAKE_PTR(options),
- };
-
- return 0;
-}
-
-static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF);
-static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF);
-
-static int partition_finalize_fstype(Partition *p, const char *path) {
- _cleanup_free_ char *e = NULL, *upper = NULL;
-
- assert(p);
- assert(path);
-
- if (!gpt_partition_type_has_filesystem(p->type))
- return 0;
-
- upper = strdup(partition_designator_to_string(p->type.designator));
- if (!upper)
- return log_oom();
-
- e = strjoin("SYSTEMD_REPART_OVERRIDE_FSTYPE_", string_replace_char(ascii_strupper(upper), '-', '_'));
- if (!e)
- return log_oom();
-
- const char *v = secure_getenv(e);
- if (!v || streq(p->format, v))
- return 0;
-
- log_syntax(NULL, LOG_NOTICE, path, 1, 0,
- "Overriding defined file system type '%s' for '%s' partition with '%s'.",
- p->format, partition_designator_to_string(p->type.designator), v);
-
- return free_and_strdup_warn(&p->format, v);
-}
-
-static bool partition_needs_populate(const Partition *p) {
- assert(p);
- assert(!p->supplement_for || !p->suppressing); /* Avoid infinite recursion */
- return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || !strv_isempty(p->make_symlinks) ||
- (p->suppressing && partition_needs_populate(p->suppressing));
-}
-
-static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) {
-
- ConfigTableItem table[] = {
- { "Partition", "Type", config_parse_type, 0, &p->type },
- { "Partition", "Label", config_parse_label, 0, &p->new_label },
- { "Partition", "UUID", config_parse_uuid, 0, p },
- { "Partition", "Priority", config_parse_int32, 0, &p->priority },
- { "Partition", "Weight", config_parse_weight, 0, &p->weight },
- { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight },
- { "Partition", "SizeMinBytes", config_parse_size4096, -1, &p->size_min },
- { "Partition", "SizeMaxBytes", config_parse_size4096, 1, &p->size_max },
- { "Partition", "PaddingMinBytes", config_parse_size4096, -1, &p->padding_min },
- { "Partition", "PaddingMaxBytes", config_parse_size4096, 1, &p->padding_max },
- { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset },
- { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p },
- { "Partition", "Format", config_parse_fstype, 0, &p->format },
- { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files },
- { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files_source },
- { "Partition", "ExcludeFilesTarget", config_parse_exclude_files, 0, &p->exclude_files_target },
- { "Partition", "MakeDirectories", config_parse_make_dirs, 0, &p->make_directories },
- { "Partition", "MakeSymlinks", config_parse_make_symlinks, 0, &p->make_symlinks },
- { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt },
- { "Partition", "Verity", config_parse_verity, 0, &p->verity },
- { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key },
- { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags },
- { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only },
- { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto },
- { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs },
- { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format },
- { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize },
- { "Partition", "Subvolumes", config_parse_subvolumes, 0, &p->subvolumes },
- { "Partition", "DefaultSubvolume", config_parse_default_subvolume, 0, &p->default_subvolume },
- { "Partition", "VerityDataBlockSizeBytes", config_parse_block_size, 0, &p->verity_data_block_size },
- { "Partition", "VerityHashBlockSizeBytes", config_parse_block_size, 0, &p->verity_hash_block_size },
- { "Partition", "MountPoint", config_parse_mountpoint, 0, p },
- { "Partition", "EncryptedVolume", config_parse_encrypted_volume, 0, p },
- { "Partition", "Compression", config_parse_string, CONFIG_PARSE_STRING_SAFE_AND_ASCII, &p->compression },
- { "Partition", "CompressionLevel", config_parse_string, CONFIG_PARSE_STRING_SAFE_AND_ASCII, &p->compression_level },
- { "Partition", "SupplementFor", config_parse_string, 0, &p->supplement_for_name },
- {}
- };
- _cleanup_free_ char *filename = NULL;
- const char* dropin_dirname;
- int r;
-
- r = path_extract_filename(path, &filename);
- if (r < 0)
- return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);
-
- dropin_dirname = strjoina(filename, ".d");
-
- r = config_parse_many(
- STRV_MAKE_CONST(path),
- conf_file_dirs,
- dropin_dirname,
- arg_definitions ? NULL : arg_root,
- "Partition\0",
- config_item_table_lookup, table,
- CONFIG_PARSE_WARN,
- p,
- NULL,
- &p->drop_in_files);
- if (r < 0)
- return r;
-
- if (partition_type_exclude(&p->type))
- return 0;
-
- if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SizeMinBytes= larger than SizeMaxBytes=, refusing.");
-
- if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "PaddingMinBytes= larger than PaddingMaxBytes=, refusing.");
-
- if (sd_id128_is_null(p->type.uuid))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Type= not defined, refusing.");
-
- if ((p->copy_blocks_path || p->copy_blocks_auto) && (p->format || partition_needs_populate(p)))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Format=/CopyFiles=/MakeDirectories=/MakeSymlinks= and CopyBlocks= cannot be combined, refusing.");
-
- if (partition_needs_populate(p) && streq_ptr(p->format, "swap"))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Format=swap and CopyFiles=/MakeDirectories=/MakeSymlinks= cannot be combined, refusing.");
-
- if (!p->format) {
- const char *format = NULL;
-
- if (p->type.designator == PARTITION_SWAP)
- format = "swap";
- else if (partition_needs_populate(p) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))
- /* Pick "vfat" as file system for esp and xbootldr partitions, otherwise default to "ext4". */
- format = IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR) ? "vfat" : "ext4";
-
- if (format) {
- p->format = strdup(format);
- if (!p->format)
- return log_oom();
- }
- }
-
- if (p->minimize != MINIMIZE_OFF && !p->format && p->verity != VERITY_HASH)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Minimize= can only be enabled if Format= or Verity=hash are set.");
-
- if (p->minimize == MINIMIZE_BEST && (p->format && !fstype_is_ro(p->format)) && p->verity != VERITY_HASH)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Minimize=best can only be used with read-only filesystems or Verity=hash.");
-
- if (partition_needs_populate(p) && !mkfs_supports_root_option(p->format) && geteuid() != 0)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM),
- "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=/MakeSymlinks=.",
- p->format);
-
- if (p->format && fstype_is_ro(p->format) && !partition_needs_populate(p))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Cannot format %s filesystem without source files, refusing.", p->format);
-
- if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) {
- r = dlopen_cryptsetup();
- if (r < 0)
- return log_syntax(NULL, LOG_ERR, path, 1, r,
- "libcryptsetup not found, Verity=/Encrypt= are not supported: %m");
- }
-
- if (p->verity != VERITY_OFF && !p->verity_match_key)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "VerityMatchKey= must be set if Verity=%s.", verity_mode_to_string(p->verity));
-
- if (p->verity == VERITY_OFF && p->verity_match_key)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "VerityMatchKey= can only be set if Verity= is not \"%s\".",
- verity_mode_to_string(p->verity));
-
- if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && (p->copy_blocks_path || p->copy_blocks_auto || p->format || partition_needs_populate(p)))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "CopyBlocks=/CopyFiles=/Format=/MakeDirectories=/MakeSymlinks= cannot be used with Verity=%s.",
- verity_mode_to_string(p->verity));
-
- if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Encrypting verity hash/data partitions is not supported.");
-
- if (p->verity == VERITY_SIG && !arg_private_key)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Verity signature partition requested but no private key provided (--private-key=).");
-
- if (p->verity == VERITY_SIG && !arg_certificate)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Verity signature partition requested but no PEM certificate provided (--certificate=).");
-
- if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s.",
- verity_mode_to_string(p->verity));
-
- if (!ordered_hashmap_isempty(p->subvolumes) && arg_offline > 0)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EOPNOTSUPP),
- "Subvolumes= cannot be used with --offline=yes.");
-
- if (p->default_subvolume && arg_offline > 0)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EOPNOTSUPP),
- "DefaultSubvolume= cannot be used with --offline=yes.");
-
- if (p->default_subvolume && !ordered_hashmap_contains(p->subvolumes, p->default_subvolume))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "DefaultSubvolume= must be one of the paths in Subvolumes=.");
-
- if (p->supplement_for_name) {
- if (!filename_part_is_valid(p->supplement_for_name))
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SupplementFor= is an invalid filename: %s",
- p->supplement_for_name);
-
- if (p->copy_blocks_path || p->copy_blocks_auto || p->encrypt != ENCRYPT_OFF ||
- p->verity != VERITY_OFF)
- return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SupplementFor= cannot be combined with CopyBlocks=/Encrypt=/Verity=");
- }
-
- /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */
- if ((IN_SET(p->type.designator,
- PARTITION_ROOT_VERITY,
- PARTITION_USR_VERITY) || p->verity == VERITY_DATA) && p->read_only < 0)
- p->read_only = true;
-
- /* Default to "growfs" on, unless read-only */
- if (gpt_partition_type_knows_growfs(p->type) &&
- p->read_only <= 0)
- p->growfs = true;
-
- if (!p->split_name_format) {
- char *s = strdup("%t");
- if (!s)
- return log_oom();
-
- p->split_name_format = s;
- } else if (streq(p->split_name_format, "-"))
- p->split_name_format = mfree(p->split_name_format);
-
- r = partition_finalize_fstype(p, path);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) {
- Partition *s = NULL;
-
- assert(p);
- assert(p->verity != VERITY_OFF);
- assert(p->verity_match_key);
- assert(mode != VERITY_OFF);
- assert(p->verity != mode);
- assert(ret);
-
- /* Try to find the matching sibling partition of the given type for a verity partition. For a data
- * partition, this is the corresponding hash partition with the same verity name (and vice versa for
- * the hash partition). */
-
- LIST_FOREACH(partitions, q, context->partitions) {
- if (p == q)
- continue;
-
- if (q->verity != mode)
- continue;
-
- assert(q->verity_match_key);
-
- if (!streq(p->verity_match_key, q->verity_match_key))
- continue;
-
- if (s)
- return -ENOTUNIQ;
-
- s = q;
- }
-
- if (!s)
- return -ENXIO;
-
- *ret = s;
-
- return 0;
-}
-
-static int context_open_and_lock_backing_fd(const char *node, int operation, int *backing_fd) {
- _cleanup_close_ int fd = -EBADF;
-
- assert(node);
- assert(backing_fd);
-
- if (*backing_fd >= 0)
- return 0;
-
- fd = open(node, O_RDONLY|O_CLOEXEC);
- if (fd < 0)
- return log_error_errno(errno, "Failed to open device '%s': %m", node);
-
- /* Tell udev not to interfere while we are processing the device */
- if (flock(fd, operation) < 0)
- return log_error_errno(errno, "Failed to lock device '%s': %m", node);
-
- log_debug("Device %s opened and locked.", node);
- *backing_fd = TAKE_FD(fd);
- return 1;
-}
-
-static int determine_current_padding(
- struct fdisk_context *c,
- struct fdisk_table *t,
- struct fdisk_partition *p,
- uint64_t secsz,
- uint64_t grainsz,
- uint64_t *ret) {
-
- size_t n_partitions;
- uint64_t offset, next = UINT64_MAX;
-
- assert(c);
- assert(t);
- assert(p);
- assert(ret);
-
- if (!fdisk_partition_has_end(p))
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end.");
-
- offset = fdisk_partition_get_end(p);
- assert(offset < UINT64_MAX);
- offset++; /* The end is one sector before the next partition or padding. */
- assert(offset < UINT64_MAX / secsz);
- offset *= secsz;
-
- n_partitions = fdisk_table_get_nents(t);
- for (size_t i = 0; i < n_partitions; i++) {
- struct fdisk_partition *q;
- uint64_t start;
-
- q = fdisk_table_get_partition(t, i);
- if (!q)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
-
- if (fdisk_partition_is_used(q) <= 0)
- continue;
-
- if (!fdisk_partition_has_start(q))
- continue;
-
- start = fdisk_partition_get_start(q);
- assert(start < UINT64_MAX / secsz);
- start *= secsz;
-
- if (start >= offset && (next == UINT64_MAX || next > start))
- next = start;
- }
-
- if (next == UINT64_MAX) {
- /* No later partition? In that case check the end of the usable area */
- next = fdisk_get_last_lba(c);
- assert(next < UINT64_MAX);
- next++; /* The last LBA is one sector before the end */
-
- assert(next < UINT64_MAX / secsz);
- next *= secsz;
-
- if (offset > next)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end.");
- }
-
- assert(next >= offset);
- offset = round_up_size(offset, grainsz);
- next = round_down_size(next, grainsz);
-
- *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */
- return 0;
-}
-
-static int context_copy_from_one(Context *context, const char *src) {
- _cleanup_close_ int fd = -EBADF;
- _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
- _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL;
- Partition *last = NULL;
- unsigned long secsz, grainsz;
- size_t n_partitions;
- int r;
-
- assert(src);
-
- r = context_open_and_lock_backing_fd(src, LOCK_SH, &fd);
- if (r < 0)
- return r;
-
- r = fd_verify_regular(fd);
- if (r < 0)
- return log_error_errno(r, "%s is not a file: %m", src);
-
- r = fdisk_new_context_at(fd, /* path = */ NULL, /* read_only = */ true, /* sector_size = */ UINT32_MAX, &c);
- if (r < 0)
- return log_error_errno(r, "Failed to create fdisk context: %m");
-
- secsz = fdisk_get_sector_size(c);
- grainsz = fdisk_get_grain_size(c);
-
- /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */
- if (secsz < 512 || !ISPOWEROF2(secsz))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz);
-
- if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
- return log_error_errno(SYNTHETIC_ERRNO(EHWPOISON), "Cannot copy from disk %s with no GPT disk label.", src);
-
- r = fdisk_get_partitions(c, &t);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire partition table: %m");
-
- n_partitions = fdisk_table_get_nents(t);
- for (size_t i = 0; i < n_partitions; i++) {
- _cleanup_(partition_freep) Partition *np = NULL;
- _cleanup_free_ char *label_copy = NULL;
- struct fdisk_partition *p;
- const char *label;
- uint64_t sz, start, padding;
- sd_id128_t ptid, id;
- GptPartitionType type;
-
- p = fdisk_table_get_partition(t, i);
- if (!p)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
-
- if (fdisk_partition_is_used(p) <= 0)
- continue;
-
- if (fdisk_partition_has_start(p) <= 0 ||
- fdisk_partition_has_size(p) <= 0 ||
- fdisk_partition_has_partno(p) <= 0)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number.");
-
- r = fdisk_partition_get_type_as_id128(p, &ptid);
- if (r < 0)
- return log_error_errno(r, "Failed to query partition type UUID: %m");
-
- type = gpt_partition_type_from_uuid(ptid);
-
- r = fdisk_partition_get_uuid_as_id128(p, &id);
- if (r < 0)
- return log_error_errno(r, "Failed to query partition UUID: %m");
-
- label = fdisk_partition_get_name(p);
- if (!isempty(label)) {
- label_copy = strdup(label);
- if (!label_copy)
- return log_oom();
- }
-
- sz = fdisk_partition_get_size(p);
- assert(sz <= UINT64_MAX/secsz);
- sz *= secsz;
-
- start = fdisk_partition_get_start(p);
- assert(start <= UINT64_MAX/secsz);
- start *= secsz;
-
- if (partition_type_exclude(&type))
- continue;
-
- np = partition_new();
- if (!np)
- return log_oom();
-
- np->type = type;
- np->new_uuid = id;
- np->new_uuid_is_set = true;
- np->size_min = np->size_max = sz;
- np->new_label = TAKE_PTR(label_copy);
-
- np->definition_path = strdup(src);
- if (!np->definition_path)
- return log_oom();
-
- np->split_name_format = strdup("%t");
- if (!np->split_name_format)
- return log_oom();
-
- r = determine_current_padding(c, t, p, secsz, grainsz, &padding);
- if (r < 0)
- return r;
-
- np->padding_min = np->padding_max = padding;
-
- np->copy_blocks_path = strdup(src);
- if (!np->copy_blocks_path)
- return log_oom();
-
- np->copy_blocks_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
- if (np->copy_blocks_fd < 0)
- return log_error_errno(r, "Failed to duplicate file descriptor of %s: %m", src);
-
- np->copy_blocks_offset = start;
- np->copy_blocks_size = sz;
-
- r = fdisk_partition_get_attrs_as_uint64(p, &np->gpt_flags);
- if (r < 0)
- return log_error_errno(r, "Failed to get partition flags: %m");
-
- LIST_INSERT_AFTER(partitions, context->partitions, last, np);
- last = TAKE_PTR(np);
- context->n_partitions++;
- }
-
- return 0;
-}
-
-static int context_copy_from(Context *context) {
- int r;
-
- assert(context);
-
- STRV_FOREACH(src, arg_copy_from) {
- r = context_copy_from_one(context, *src);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static bool check_cross_def_ranges_valid(uint64_t a_min, uint64_t a_max, uint64_t b_min, uint64_t b_max) {
- if (a_min == UINT64_MAX && b_min == UINT64_MAX)
- return true;
-
- if (a_max == UINT64_MAX && b_max == UINT64_MAX)
- return true;
-
- return MAX(a_min != UINT64_MAX ? a_min : 0, b_min != UINT64_MAX ? b_min : 0) <= MIN(a_max, b_max);
-}
-
-static int supplement_find_target(const Context *context, const Partition *supplement, Partition **ret) {
- int r;
-
- assert(context);
- assert(supplement);
- assert(ret);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *filename = NULL;
-
- if (p == supplement)
- continue;
-
- r = path_extract_filename(p->definition_path, &filename);
- if (r < 0)
- return log_error_errno(r,
- "Failed to extract filename from path '%s': %m",
- p->definition_path);
-
- *ASSERT_PTR(endswith(filename, ".conf")) = 0; /* Remove the file extension */
-
- if (!streq(supplement->supplement_for_name, filename))
- continue;
-
- if (p->supplement_for_name)
- return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SupplementFor= target is itself configured as a supplement.");
-
- if (p->suppressing)
- return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SupplementFor= target already has a supplement defined: %s",
- p->suppressing->definition_path);
-
- *ret = p;
- return 0;
- }
-
- return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Couldn't find target partition for SupplementFor=%s",
- supplement->supplement_for_name);
-}
-
-static int context_read_definitions(Context *context) {
- _cleanup_strv_free_ char **files = NULL;
- Partition *last = LIST_FIND_TAIL(partitions, context->partitions);
- const char *const *dirs;
- int r;
-
- assert(context);
-
- dirs = (const char* const*) (arg_definitions ?: CONF_PATHS_STRV("repart.d"));
-
- r = conf_files_list_strv(&files, ".conf", arg_definitions ? NULL : arg_root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs);
- if (r < 0)
- return log_error_errno(r, "Failed to enumerate *.conf files: %m");
-
- STRV_FOREACH(f, files) {
- _cleanup_(partition_freep) Partition *p = NULL;
-
- p = partition_new();
- if (!p)
- return log_oom();
-
- p->definition_path = strdup(*f);
- if (!p->definition_path)
- return log_oom();
-
- r = partition_read_definition(p, *f, dirs);
- if (r < 0)
- return r;
- if (r == 0)
- continue;
-
- LIST_INSERT_AFTER(partitions, context->partitions, last, p);
- last = TAKE_PTR(p);
- context->n_partitions++;
- }
-
- /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->verity == VERITY_OFF)
- continue;
-
- for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) {
- Partition *q = NULL;
-
- if (p->verity == mode)
- continue;
-
- if (p->siblings[mode])
- continue;
-
- r = find_verity_sibling(context, p, mode, &q);
- if (r == -ENXIO) {
- if (mode != VERITY_SIG)
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Missing verity %s partition for verity %s partition with VerityMatchKey=%s.",
- verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
- } else if (r == -ENOTUNIQ)
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s.",
- verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
- else if (r < 0)
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r,
- "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s.",
- verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
-
- if (q) {
- if (q->priority != p->priority)
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s.",
- p->priority, q->priority, p->verity_match_key);
-
- p->siblings[mode] = q;
- }
- }
- }
-
- LIST_FOREACH(partitions, p, context->partitions) {
- Partition *dp;
-
- if (p->verity != VERITY_HASH)
- continue;
-
- if (p->minimize == MINIMIZE_OFF)
- continue;
-
- assert_se(dp = p->siblings[VERITY_DATA]);
-
- if (dp->minimize == MINIMIZE_OFF && !(dp->copy_blocks_path || dp->copy_blocks_auto))
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "Minimize= set for verity hash partition but data partition does not set CopyBlocks= or Minimize=.");
- }
-
- LIST_FOREACH(partitions, p, context->partitions) {
- Partition *tgt = NULL;
-
- if (!p->supplement_for_name)
- continue;
-
- r = supplement_find_target(context, p, &tgt);
- if (r < 0)
- return r;
-
- if (tgt->copy_blocks_path || tgt->copy_blocks_auto || tgt->encrypt != ENCRYPT_OFF ||
- tgt->verity != VERITY_OFF)
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SupplementFor= target uses CopyBlocks=/Encrypt=/Verity=");
-
- if (!check_cross_def_ranges_valid(p->size_min, p->size_max, tgt->size_min, tgt->size_max))
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "SizeMinBytes= larger than SizeMaxBytes= when merged with SupplementFor= target.");
-
- if (!check_cross_def_ranges_valid(p->padding_min, p->padding_max, tgt->padding_min, tgt->padding_max))
- return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
- "PaddingMinBytes= larger than PaddingMaxBytes= when merged with SupplementFor= target.");
-
- p->supplement_for = tgt;
- tgt->suppressing = tgt->supplement_target_for = p;
- }
-
- return 0;
-}
-
-static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) {
- _cleanup_free_ char *ids = NULL;
- int r;
-
- if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING)
- return -EINVAL;
-
- ids = new(char, SD_ID128_UUID_STRING_MAX);
- if (!ids)
- return -ENOMEM;
-
- r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids));
- if (r < 0)
- return r;
-
- TAKE_PTR(ids);
- return 0;
-}
-
-static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) {
- int r;
-
- r = fdisk_set_ask(c, fdisk_ask_cb, &id);
- if (r < 0)
- return r;
-
- r = fdisk_set_disklabel_id(c);
- if (r < 0)
- return r;
-
- return fdisk_set_ask(c, NULL, NULL);
-}
-
-static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) {
- union {
- uint8_t md[SHA256_DIGEST_SIZE];
- sd_id128_t id;
- } result;
-
- assert(token);
- assert(ret);
-
- /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we
- * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the
- * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's
- * the machine ID we don't want to leak. */
-
- hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md);
-
- /* Take the first half, mark it as v4 UUID */
- assert_cc(sizeof(result.md) == sizeof(result.id) * 2);
- *ret = id128_make_v4_uuid(result.id);
- return 0;
-}
-
-static void derive_salt(sd_id128_t base, const char *token, uint8_t ret[static SHA256_DIGEST_SIZE]) {
- assert(token);
-
- hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), ret);
-}
-
-static int context_load_partition_table(Context *context) {
- _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
- _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL;
- uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors;
- _cleanup_free_ char *disk_uuid_string = NULL;
- bool from_scratch = false;
- sd_id128_t disk_uuid;
- size_t n_partitions;
- unsigned long secsz;
- uint64_t grainsz, fs_secsz = DEFAULT_FILESYSTEM_SECTOR_SIZE;
- int r;
-
- assert(context);
- assert(!context->fdisk_context);
- assert(!context->free_areas);
- assert(context->start == UINT64_MAX);
- assert(context->end == UINT64_MAX);
- assert(context->total == UINT64_MAX);
-
- c = fdisk_new_context();
- if (!c)
- return log_oom();
-
- if (arg_sector_size > 0) {
- fs_secsz = arg_sector_size;
- r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size);
- } else {
- uint32_t ssz;
- struct stat st;
-
- r = context_open_and_lock_backing_fd(
- context->node,
- arg_dry_run ? LOCK_SH : LOCK_EX,
- &context->backing_fd);
- if (r < 0)
- return r;
-
- if (fstat(context->backing_fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat %s: %m", context->node);
-
- if (IN_SET(arg_empty, EMPTY_REQUIRE, EMPTY_FORCE, EMPTY_CREATE) && S_ISREG(st.st_mode))
- /* Don't probe sector size from partition table if we are supposed to start from an empty disk */
- ssz = 512;
- else {
- /* Auto-detect sector size if not specified. */
- r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz);
- if (r < 0)
- return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node);
-
- /* If we found the sector size and we're operating on a block device, use it as the file
- * system sector size as well, as we know its the sector size of the actual block device and
- * not just the offset at which we found the GPT header. */
- if (r > 0 && S_ISBLK(st.st_mode)) {
- log_debug("Probed sector size of %s is %" PRIu32 " bytes.", context->node, ssz);
- fs_secsz = ssz;
- }
- }
-
- r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz);
- }
- if (r < 0)
- return log_error_errno(r, "Failed to set sector size: %m");
-
- /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the
- * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */
- r = fdisk_assign_device(
- c,
- context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node,
- arg_dry_run);
- if (r == -EINVAL && arg_size_auto) {
- struct stat st;
-
- /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept
- * it if automatic sizing is requested. */
-
- if (context->backing_fd < 0)
- r = stat(context->node, &st);
- else
- r = fstat(context->backing_fd, &st);
- if (r < 0)
- return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node);
-
- if (S_ISREG(st.st_mode) && st.st_size == 0) {
- /* Use the fallback values if we have no better idea */
- context->sector_size = fdisk_get_sector_size(c);
- context->fs_sector_size = fs_secsz;
- context->grain_size = 4096;
- return /* from_scratch = */ true;
- }
-
- r = -EINVAL;
- }
- if (r < 0)
- return log_error_errno(r, "Failed to open device '%s': %m", context->node);
-
- if (context->backing_fd < 0) {
- /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */
- r = context_open_and_lock_backing_fd(FORMAT_PROC_FD_PATH(fdisk_get_devfd(c)),
- arg_dry_run ? LOCK_SH : LOCK_EX,
- &context->backing_fd);
- if (r < 0)
- return r;
- }
-
- /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the
- * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use
- * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean
- * the same thing universally. Also note that regardless what kind of sector size is in use we'll
- * place partitions at multiples of 4K. */
- secsz = fdisk_get_sector_size(c);
-
- /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */
- if (secsz < 512 || !ISPOWEROF2(secsz))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz);
-
- /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or
- * larger */
- grainsz = secsz < 4096 ? 4096 : secsz;
-
- log_debug("Sector size of device is %lu bytes. Using filesystem sector size of %" PRIu64 " and grain size of %" PRIu64 ".", secsz, fs_secsz, grainsz);
-
- switch (arg_empty) {
-
- case EMPTY_REFUSE:
- /* Refuse empty disks, insist on an existing GPT partition table */
- if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
- return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node);
-
- break;
-
- case EMPTY_REQUIRE:
- /* Require an empty disk, refuse any existing partition table */
- r = fdisk_has_label(c);
- if (r < 0)
- return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node);
- if (r > 0)
- return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node);
-
- from_scratch = true;
- break;
-
- case EMPTY_ALLOW:
- /* Allow both an empty disk and an existing partition table, but only GPT */
- r = fdisk_has_label(c);
- if (r < 0)
- return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node);
- if (r > 0) {
- if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
- return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node);
- } else
- from_scratch = true;
-
- break;
-
- case EMPTY_FORCE:
- case EMPTY_CREATE:
- /* Always reinitiaize the disk, don't consider what there was on the disk before */
- from_scratch = true;
- break;
-
- default:
- assert_not_reached();
- }
-
- if (from_scratch) {
- r = fdisk_create_disklabel(c, "gpt");
- if (r < 0)
- return log_error_errno(r, "Failed to create GPT disk label: %m");
-
- r = derive_uuid(context->seed, "disk-uuid", &disk_uuid);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire disk GPT uuid: %m");
-
- r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid);
- if (r < 0)
- return log_error_errno(r, "Failed to set GPT disk label: %m");
-
- goto add_initial_free_area;
- }
-
- r = fdisk_get_disklabel_id(c, &disk_uuid_string);
- if (r < 0)
- return log_error_errno(r, "Failed to get current GPT disk label UUID: %m");
-
- r = id128_from_string_nonzero(disk_uuid_string, &disk_uuid);
- if (r == -ENXIO) {
- r = derive_uuid(context->seed, "disk-uuid", &disk_uuid);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire disk GPT uuid: %m");
-
- r = fdisk_set_disklabel_id(c);
- if (r < 0)
- return log_error_errno(r, "Failed to set GPT disk label: %m");
- } else if (r < 0)
- return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m");
-
- r = fdisk_get_partitions(c, &t);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire partition table: %m");
-
- n_partitions = fdisk_table_get_nents(t);
- for (size_t i = 0; i < n_partitions; i++) {
- _cleanup_free_ char *label_copy = NULL;
- Partition *last = NULL;
- struct fdisk_partition *p;
- const char *label;
- uint64_t sz, start;
- bool found = false;
- sd_id128_t ptid, id;
- size_t partno;
-
- p = fdisk_table_get_partition(t, i);
- if (!p)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
-
- if (fdisk_partition_is_used(p) <= 0)
- continue;
-
- if (fdisk_partition_has_start(p) <= 0 ||
- fdisk_partition_has_size(p) <= 0 ||
- fdisk_partition_has_partno(p) <= 0)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number.");
-
- r = fdisk_partition_get_type_as_id128(p, &ptid);
- if (r < 0)
- return log_error_errno(r, "Failed to query partition type UUID: %m");
-
- r = fdisk_partition_get_uuid_as_id128(p, &id);
- if (r < 0)
- return log_error_errno(r, "Failed to query partition UUID: %m");
-
- label = fdisk_partition_get_name(p);
- if (!isempty(label)) {
- label_copy = strdup(label);
- if (!label_copy)
- return log_oom();
- }
-
- sz = fdisk_partition_get_size(p);
- assert(sz <= UINT64_MAX/secsz);
- sz *= secsz;
-
- start = fdisk_partition_get_start(p);
- assert(start <= UINT64_MAX/secsz);
- start *= secsz;
-
- partno = fdisk_partition_get_partno(p);
-
- if (left_boundary == UINT64_MAX || left_boundary > start)
- left_boundary = start;
-
- /* Assign this existing partition to the first partition of the right type that doesn't have
- * an existing one assigned yet. */
- LIST_FOREACH(partitions, pp, context->partitions) {
- last = pp;
-
- if (!sd_id128_equal(pp->type.uuid, ptid))
- continue;
-
- if (!pp->current_partition) {
- pp->current_uuid = id;
- pp->current_size = sz;
- pp->offset = start;
- pp->partno = partno;
- pp->current_label = TAKE_PTR(label_copy);
-
- pp->current_partition = p;
- fdisk_ref_partition(p);
-
- r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding);
- if (r < 0)
- return r;
-
- if (pp->current_padding > 0) {
- r = context_add_free_area(context, pp->current_padding, pp);
- if (r < 0)
- return r;
- }
-
- found = true;
- break;
- }
- }
-
- /* If we have no matching definition, create a new one. */
- if (!found) {
- _cleanup_(partition_freep) Partition *np = NULL;
-
- np = partition_new();
- if (!np)
- return log_oom();
-
- np->current_uuid = id;
- np->type = gpt_partition_type_from_uuid(ptid);
- np->current_size = sz;
- np->offset = start;
- np->partno = partno;
- np->current_label = TAKE_PTR(label_copy);
-
- np->current_partition = p;
- fdisk_ref_partition(p);
-
- r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding);
- if (r < 0)
- return r;
-
- if (np->current_padding > 0) {
- r = context_add_free_area(context, np->current_padding, np);
- if (r < 0)
- return r;
- }
-
- LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np));
- context->n_partitions++;
- }
- }
-
- LIST_FOREACH(partitions, p, context->partitions)
- if (PARTITION_SUPPRESSED(p) && PARTITION_EXISTS(p))
- p->supplement_for->suppressing = NULL;
-
-add_initial_free_area:
- nsectors = fdisk_get_nsectors(c);
- assert(nsectors <= UINT64_MAX/secsz);
- nsectors *= secsz;
-
- first_lba = fdisk_get_first_lba(c);
- assert(first_lba <= UINT64_MAX/secsz);
- first_lba *= secsz;
-
- last_lba = fdisk_get_last_lba(c);
- assert(last_lba < UINT64_MAX);
- last_lba++;
- assert(last_lba <= UINT64_MAX/secsz);
- last_lba *= secsz;
-
- assert(last_lba >= first_lba);
-
- if (left_boundary == UINT64_MAX) {
- /* No partitions at all? Then the whole disk is up for grabs. */
-
- first_lba = round_up_size(first_lba, grainsz);
- last_lba = round_down_size(last_lba, grainsz);
-
- if (last_lba > first_lba) {
- r = context_add_free_area(context, last_lba - first_lba, NULL);
- if (r < 0)
- return r;
- }
- } else {
- /* Add space left of first partition */
- assert(left_boundary >= first_lba);
-
- first_lba = round_up_size(first_lba, grainsz);
- left_boundary = round_down_size(left_boundary, grainsz);
- last_lba = round_down_size(last_lba, grainsz);
-
- if (left_boundary > first_lba) {
- r = context_add_free_area(context, left_boundary - first_lba, NULL);
- if (r < 0)
- return r;
- }
- }
-
- context->start = first_lba;
- context->end = last_lba;
- context->total = nsectors;
- context->sector_size = secsz;
- context->fs_sector_size = fs_secsz;
- context->grain_size = grainsz;
- context->fdisk_context = TAKE_PTR(c);
-
- return from_scratch;
-}
-
-static void context_unload_partition_table(Context *context) {
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
-
- /* Entirely remove partitions that have no configuration */
- if (PARTITION_IS_FOREIGN(p)) {
- partition_unlink_and_free(context, p);
- continue;
- }
-
- /* Otherwise drop all data we read off the block device and everything we might have
- * calculated based on it */
-
- p->dropped = false;
- p->current_size = UINT64_MAX;
- p->new_size = UINT64_MAX;
- p->current_padding = UINT64_MAX;
- p->new_padding = UINT64_MAX;
- p->partno = UINT64_MAX;
- p->offset = UINT64_MAX;
-
- if (p->current_partition) {
- fdisk_unref_partition(p->current_partition);
- p->current_partition = NULL;
- }
-
- if (p->new_partition) {
- fdisk_unref_partition(p->new_partition);
- p->new_partition = NULL;
- }
-
- p->padding_area = NULL;
- p->allocated_to_area = NULL;
-
- p->current_uuid = SD_ID128_NULL;
- p->current_label = mfree(p->current_label);
-
- /* A supplement partition is only ever un-suppressed if the existing partition table prevented
- * us from suppressing it. So when unloading the partition table, we must re-suppress. */
- if (p->supplement_for)
- p->supplement_for->suppressing = p;
- }
-
- context->start = UINT64_MAX;
- context->end = UINT64_MAX;
- context->total = UINT64_MAX;
-
- if (context->fdisk_context) {
- fdisk_unref_context(context->fdisk_context);
- context->fdisk_context = NULL;
- }
-
- context_free_free_areas(context);
-}
-
-static int format_size_change(uint64_t from, uint64_t to, char **ret) {
- char *t;
-
- if (from != UINT64_MAX) {
- if (from == to || to == UINT64_MAX)
- t = strdup(FORMAT_BYTES(from));
- else
- t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to));
- } else if (to != UINT64_MAX)
- t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to));
- else {
- *ret = NULL;
- return 0;
- }
-
- if (!t)
- return log_oom();
-
- *ret = t;
- return 1;
-}
-
-static const char *partition_label(const Partition *p) {
- assert(p);
-
- if (p->new_label)
- return p->new_label;
-
- if (p->current_label)
- return p->current_label;
-
- return gpt_partition_type_uuid_to_string(p->type.uuid);
-}
-
-static int context_dump_partitions(Context *context) {
- _cleanup_(table_unrefp) Table *t = NULL;
- uint64_t sum_padding = 0, sum_size = 0;
- int r;
- const size_t roothash_col = 14, dropin_files_col = 15, split_path_col = 16;
- bool has_roothash = false, has_dropin_files = false, has_split_path = false;
-
- if (context->n_partitions == 0 && !sd_json_format_enabled(arg_json_format_flags)) {
- log_info("Empty partition table.");
- return 0;
- }
-
- t = table_new("type",
- "label",
- "uuid",
- "partno",
- "file",
- "node",
- "offset",
- "old size",
- "raw size",
- "size",
- "old padding",
- "raw padding",
- "padding",
- "activity",
- "roothash",
- "drop-in files",
- "split path");
- if (!t)
- return log_oom();
-
- /* Starting in v257, these fields would be automatically formatted with underscores. This would have
- * been a breaking change, so to avoid that let's hard-code their original names. */
- table_set_json_field_name(t, 15, "drop-in_files");
-
- if (!DEBUG_LOGGING) {
- if (!sd_json_format_enabled(arg_json_format_flags))
- (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4,
- (size_t) 8, (size_t) 9, (size_t) 12, roothash_col, dropin_files_col,
- split_path_col);
- else
- (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4,
- (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 8, (size_t) 10,
- (size_t) 11, (size_t) 13, roothash_col, dropin_files_col,
- split_path_col);
- }
-
- (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100);
- (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL;
- char uuid_buffer[SD_ID128_UUID_STRING_MAX];
- const char *label, *activity = NULL;
-
- if (p->dropped)
- continue;
-
- if (p->current_size == UINT64_MAX)
- activity = "create";
- else if (p->current_size != p->new_size)
- activity = "resize";
-
- label = partition_label(p);
- partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL;
-
- r = format_size_change(p->current_size, p->new_size, &size_change);
- if (r < 0)
- return r;
-
- r = format_size_change(p->current_padding, p->new_padding, &padding_change);
- if (r < 0)
- return r;
-
- if (p->new_size != UINT64_MAX)
- sum_size += p->new_size;
- if (p->new_padding != UINT64_MAX)
- sum_padding += p->new_padding;
-
- if (p->verity != VERITY_OFF) {
- Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH];
-
- rh = iovec_is_set(&hp->roothash) ? hexmem(hp->roothash.iov_base, hp->roothash.iov_len) : strdup("TBD");
- if (!rh)
- return log_oom();
- }
-
- r = table_add_many(
- t,
- TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer),
- TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(),
- TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid,
- TABLE_UINT64, p->partno,
- TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(),
- TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(),
- TABLE_UINT64, p->offset,
- TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size,
- TABLE_UINT64, p->new_size,
- TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL,
- TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding,
- TABLE_UINT64, p->new_padding,
- TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL,
- TABLE_STRING, activity ?: "unchanged",
- TABLE_STRING, rh,
- TABLE_STRV, p->drop_in_files,
- TABLE_STRING, empty_to_null(p->split_path) ?: "-");
- if (r < 0)
- return table_log_add_error(r);
-
- has_roothash = has_roothash || !isempty(rh);
- has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files);
- has_split_path = has_split_path || !isempty(p->split_path);
- }
-
- if (!sd_json_format_enabled(arg_json_format_flags) && (sum_padding > 0 || sum_size > 0)) {
- const char *a, *b;
-
- a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size));
- b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding));
-
- r = table_add_many(
- t,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_STRING, a,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_STRING, b,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY,
- TABLE_EMPTY);
- if (r < 0)
- return table_log_add_error(r);
- }
-
- if (!has_roothash) {
- r = table_hide_column_from_display(t, roothash_col);
- if (r < 0)
- return log_error_errno(r, "Failed to set columns to display: %m");
- }
-
- if (!has_dropin_files) {
- r = table_hide_column_from_display(t, dropin_files_col);
- if (r < 0)
- return log_error_errno(r, "Failed to set columns to display: %m");
- }
-
- if (!has_split_path) {
- r = table_hide_column_from_display(t, split_path_col);
- if (r < 0)
- return log_error_errno(r, "Failed to set columns to display: %m");
- }
-
- return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend);
-}
-
-static int context_bar_char_process_partition(
- Context *context,
- Partition *bar[],
- size_t n,
- Partition *p,
- size_t **start_array,
- size_t *n_start_array) {
-
- uint64_t from, to, total;
- size_t x, y;
-
- assert(context);
- assert(bar);
- assert(n > 0);
- assert(p);
- assert(start_array);
- assert(n_start_array);
-
- if (p->dropped)
- return 0;
-
- assert(p->offset != UINT64_MAX);
- assert(p->new_size != UINT64_MAX);
-
- from = p->offset;
- to = from + p->new_size;
-
- assert(context->total > 0);
- total = context->total;
-
- assert(from <= total);
- x = from * n / total;
-
- assert(to <= total);
- y = to * n / total;
-
- assert(x <= y);
- assert(y <= n);
-
- for (size_t i = x; i < y; i++)
- bar[i] = p;
-
- if (!GREEDY_REALLOC_APPEND(*start_array, *n_start_array, &x, 1))
- return log_oom();
-
- return 1;
-}
-
-static int partition_hint(const Partition *p, const char *node, char **ret) {
- _cleanup_free_ char *buf = NULL;
- const char *label;
- sd_id128_t id;
-
- /* Tries really hard to find a suitable description for this partition */
-
- if (p->definition_path)
- return path_extract_filename(p->definition_path, ret);
-
- label = partition_label(p);
- if (!isempty(label)) {
- buf = strdup(label);
- goto done;
- }
-
- if (p->partno != UINT64_MAX) {
- buf = fdisk_partname(node, p->partno+1);
- goto done;
- }
-
- if (p->new_uuid_is_set)
- id = p->new_uuid;
- else if (!sd_id128_is_null(p->current_uuid))
- id = p->current_uuid;
- else
- id = p->type.uuid;
-
- buf = strdup(SD_ID128_TO_UUID_STRING(id));
-
-done:
- if (!buf)
- return -ENOMEM;
-
- *ret = TAKE_PTR(buf);
- return 0;
-}
-
-static int context_dump_partition_bar(Context *context) {
- _cleanup_free_ Partition **bar = NULL;
- _cleanup_free_ size_t *start_array = NULL;
- size_t n_start_array = 0;
- Partition *last = NULL;
- bool z = false;
- size_t c, j = 0;
- int r;
-
- assert_se((c = columns()) >= 2);
- c -= 2; /* We do not use the leftmost and rightmost character cell */
-
- bar = new0(Partition*, c);
- if (!bar)
- return log_oom();
-
- LIST_FOREACH(partitions, p, context->partitions) {
- r = context_bar_char_process_partition(context, bar, c, p, &start_array, &n_start_array);
- if (r < 0)
- return r;
- }
-
- putc(' ', stdout);
-
- for (size_t i = 0; i < c; i++) {
- if (bar[i]) {
- if (last != bar[i])
- z = !z;
-
- fputs(z ? ansi_green() : ansi_yellow(), stdout);
- fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout);
- } else {
- fputs(ansi_normal(), stdout);
- fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout);
- }
-
- last = bar[i];
- }
-
- fputs(ansi_normal(), stdout);
- putc('\n', stdout);
-
- for (size_t i = 0; i < n_start_array; i++) {
- _cleanup_free_ char **line = NULL;
-
- line = new0(char*, c);
- if (!line)
- return log_oom();
-
- j = 0;
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *d = NULL;
-
- if (p->dropped)
- continue;
-
- j++;
-
- if (i < n_start_array - j) {
-
- if (line[start_array[j-1]]) {
- const char *e;
-
- /* Upgrade final corner to the right with a branch to the right */
- e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT));
- if (e) {
- d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e);
- if (!d)
- return log_oom();
- }
- }
-
- if (!d) {
- d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL));
- if (!d)
- return log_oom();
- }
-
- } else if (i == n_start_array - j) {
- _cleanup_free_ char *hint = NULL;
-
- (void) partition_hint(p, context->node, &hint);
-
- if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)))
- d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint));
- else
- d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint));
-
- if (!d)
- return log_oom();
- }
-
- if (d)
- free_and_replace(line[start_array[j-1]], d);
- }
-
- putc(' ', stdout);
-
- j = 0;
- while (j < c) {
- if (line[j]) {
- fputs(line[j], stdout);
- j += utf8_console_width(line[j]);
- } else {
- putc(' ', stdout);
- j++;
- }
- }
-
- putc('\n', stdout);
-
- for (j = 0; j < c; j++)
- free(line[j]);
- }
-
- return 0;
-}
-
-static bool context_has_roothash(Context *context) {
- LIST_FOREACH(partitions, p, context->partitions)
- if (iovec_is_set(&p->roothash))
- return true;
-
- return false;
-}
-
-static int context_dump(Context *context, bool late) {
- int r;
-
- assert(context);
-
- if (arg_pretty == 0 && !sd_json_format_enabled(arg_json_format_flags))
- return 0;
-
- /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes
- * in the output. */
- if (!late && sd_json_format_enabled(arg_json_format_flags))
- return 0;
-
- /* If we're not outputting JSON, only dump again after doing all operations if there are any
- * roothashes that we need to communicate to the user. */
- if (late && !sd_json_format_enabled(arg_json_format_flags) && !context_has_roothash(context))
- return 0;
-
- r = context_dump_partitions(context);
- if (r < 0)
- return r;
-
- /* Only write the partition bar once, even if we're writing the partition table twice to communicate
- * roothashes. */
- if (!sd_json_format_enabled(arg_json_format_flags) && !late) {
- putc('\n', stdout);
-
- r = context_dump_partition_bar(context);
- if (r < 0)
- return r;
-
- putc('\n', stdout);
- }
-
- fflush(stdout);
-
- return 0;
-}
-
-static bool context_changed(const Context *context) {
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->dropped)
- continue;
-
- if (p->allocated_to_area)
- return true;
-
- if (p->new_size != p->current_size)
- return true;
- }
-
- return false;
-}
-
-static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) {
- _cleanup_(blkid_free_probep) blkid_probe probe = NULL;
- int r;
-
- assert(context);
- assert(offset != UINT64_MAX);
- assert(size != UINT64_MAX);
-
- probe = blkid_new_probe();
- if (!probe)
- return log_oom();
-
- errno = 0;
- r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size);
- if (r < 0)
- return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping.");
-
- errno = 0;
- if (blkid_probe_enable_superblocks(probe, true) < 0 ||
- blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 ||
- blkid_probe_enable_partitions(probe, true) < 0 ||
- blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0)
- return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing.");
-
- for (;;) {
- errno = 0;
- r = blkid_do_probe(probe);
- if (r < 0)
- return log_error_errno(errno_or_else(EIO), "Failed to probe for file systems.");
- if (r > 0)
- break;
-
- errno = 0;
- if (blkid_do_wipe(probe, false) < 0)
- return log_error_errno(errno_or_else(EIO), "Failed to wipe file system signature.");
- }
-
- return 0;
-}
-
-static int context_wipe_partition(Context *context, Partition *p) {
- int r;
-
- assert(context);
- assert(p);
- assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */
-
- assert(p->offset != UINT64_MAX);
- assert(p->new_size != UINT64_MAX);
-
- r = context_wipe_range(context, p->offset, p->new_size);
- if (r < 0)
- return r;
-
- log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno);
- return 0;
-}
-
-static int context_discard_range(
- Context *context,
- uint64_t offset,
- uint64_t size) {
-
- struct stat st;
- int fd;
-
- assert(context);
- assert(offset != UINT64_MAX);
- assert(size != UINT64_MAX);
-
- if (size <= 0)
- return 0;
-
- assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
-
- if (fstat(fd, &st) < 0)
- return -errno;
-
- if (S_ISREG(st.st_mode)) {
- if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) {
- if (ERRNO_IS_NOT_SUPPORTED(errno))
- return -EOPNOTSUPP;
-
- return -errno;
- }
-
- return 1;
- }
-
- if (S_ISBLK(st.st_mode)) {
- uint64_t range[2], end;
-
- range[0] = round_up_size(offset, context->sector_size);
-
- if (offset > UINT64_MAX - size)
- return -ERANGE;
-
- end = offset + size;
- if (end <= range[0])
- return 0;
-
- range[1] = round_down_size(end - range[0], context->sector_size);
- if (range[1] <= 0)
- return 0;
-
- if (ioctl(fd, BLKDISCARD, range) < 0) {
- if (ERRNO_IS_NOT_SUPPORTED(errno))
- return -EOPNOTSUPP;
-
- return -errno;
- }
-
- return 1;
- }
-
- return -EOPNOTSUPP;
-}
-
-static int context_discard_partition(Context *context, Partition *p) {
- int r;
-
- assert(context);
- assert(p);
-
- assert(p->offset != UINT64_MAX);
- assert(p->new_size != UINT64_MAX);
- assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */
-
- if (!arg_discard)
- return 0;
-
- r = context_discard_range(context, p->offset, p->new_size);
- if (r == -EOPNOTSUPP) {
- log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno);
- return 0;
- }
- if (r == -EBUSY) {
- /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */
- log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno);
- return 0;
- }
- if (r == 0) {
- log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno);
- return 0;
- }
- if (r < 0)
- return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno);
-
- log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno);
- return 1;
-}
-
-static int context_discard_gap_after(Context *context, Partition *p) {
- uint64_t gap, next = UINT64_MAX;
- int r;
-
- assert(context);
- assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX));
-
- if (!arg_discard)
- return 0;
-
- if (p)
- gap = p->offset + p->new_size;
- else
- /* The context start gets rounded up to grain_size, however
- * existing partitions may be before that so ensure the gap
- * starts at the first actually usable lba
- */
- gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size;
-
- LIST_FOREACH(partitions, q, context->partitions) {
- if (q->dropped)
- continue;
-
- assert(q->offset != UINT64_MAX);
- assert(q->new_size != UINT64_MAX);
-
- if (q->offset < gap)
- continue;
-
- if (next == UINT64_MAX || q->offset < next)
- next = q->offset;
- }
-
- if (next == UINT64_MAX) {
- next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size;
- if (gap > next)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end.");
- }
-
- assert(next >= gap);
- r = context_discard_range(context, gap, next - gap);
- if (r == -EOPNOTSUPP) {
- if (p)
- log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno);
- else
- log_info("Storage does not support discard, not discarding gap at beginning of disk.");
- return 0;
- }
- if (r == 0) /* Too short */
- return 0;
- if (r < 0) {
- if (p)
- return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno);
- else
- return log_error_errno(r, "Failed to discard gap at beginning of disk.");
- }
-
- if (p)
- log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno);
- else
- log_info("Successfully discarded gap at beginning of disk.");
-
- return 0;
-}
-
-static int context_wipe_and_discard(Context *context) {
- int r;
-
- assert(context);
-
- if (arg_empty == EMPTY_CREATE) /* If we just created the image, no need to wipe */
- return 0;
-
- /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if
- * we were supposed to start from scratch anyway, as in that case we just discard the whole block
- * device in one go early on. */
-
- LIST_FOREACH(partitions, p, context->partitions) {
-
- if (!p->allocated_to_area)
- continue;
-
- if (partition_type_defer(&p->type))
- continue;
-
- r = context_wipe_partition(context, p);
- if (r < 0)
- return r;
-
- if (!context->from_scratch) {
- r = context_discard_partition(context, p);
- if (r < 0)
- return r;
-
- r = context_discard_gap_after(context, p);
- if (r < 0)
- return r;
- }
- }
-
- if (!context->from_scratch) {
- r = context_discard_gap_after(context, NULL);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-typedef struct DecryptedPartitionTarget {
- int fd;
- char *dm_name;
- char *volume;
- struct crypt_device *device;
-} DecryptedPartitionTarget;
-
-static DecryptedPartitionTarget* decrypted_partition_target_free(DecryptedPartitionTarget *t) {
-#if HAVE_LIBCRYPTSETUP
- int r;
-
- if (!t)
- return NULL;
-
- safe_close(t->fd);
-
- /* udev or so might access out block device in the background while we are done. Let's hence
- * force detach the volume. We sync'ed before, hence this should be safe. */
- r = sym_crypt_deactivate_by_name(t->device, t->dm_name, CRYPT_DEACTIVATE_FORCE);
- if (r < 0)
- log_warning_errno(r, "Failed to deactivate LUKS device, ignoring: %m");
-
- sym_crypt_free(t->device);
- free(t->dm_name);
- free(t->volume);
- free(t);
-#endif
- return NULL;
-}
-
-typedef struct {
- LoopDevice *loop;
- int fd;
- char *path;
- int whole_fd;
- DecryptedPartitionTarget *decrypted;
-} PartitionTarget;
-
-static int partition_target_fd(PartitionTarget *t) {
- assert(t);
- assert(t->loop || t->fd >= 0 || t->whole_fd >= 0);
-
- if (t->decrypted)
- return t->decrypted->fd;
-
- if (t->loop)
- return t->loop->fd;
-
- if (t->fd >= 0)
- return t->fd;
-
- return t->whole_fd;
-}
-
-static const char* partition_target_path(PartitionTarget *t) {
- assert(t);
- assert(t->loop || t->path);
-
- if (t->decrypted)
- return t->decrypted->volume;
-
- if (t->loop)
- return t->loop->node;
-
- return t->path;
-}
-
-static PartitionTarget* partition_target_free(PartitionTarget *t) {
- if (!t)
- return NULL;
-
- decrypted_partition_target_free(t->decrypted);
- loop_device_unref(t->loop);
- safe_close(t->fd);
- unlink_and_free(t->path);
-
- return mfree(t);
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free);
-
-static int prepare_temporary_file(Context *context, PartitionTarget *t, uint64_t size) {
- _cleanup_(unlink_and_freep) char *temp = NULL;
- _cleanup_close_ int fd = -EBADF;
- const char *vt;
- unsigned attrs = 0;
- int r;
-
- assert(context);
- assert(t);
-
- r = var_tmp_dir(&vt);
- if (r < 0)
- return log_error_errno(r, "Could not determine temporary directory: %m");
-
- temp = path_join(vt, "repart-XXXXXX");
- if (!temp)
- return log_oom();
-
- fd = mkostemp_safe(temp);
- if (fd < 0)
- return log_error_errno(fd, "Failed to create temporary file: %m");
-
- r = read_attr_fd(fdisk_get_devfd(context->fdisk_context), &attrs);
- if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
- return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
-
- if (FLAGS_SET(attrs, FS_NOCOW_FL)) {
- r = chattr_fd(fd, FS_NOCOW_FL, FS_NOCOW_FL, NULL);
- if (r < 0 && !ERRNO_IS_NOT_SUPPORTED(r))
- return log_error_errno(r, "Failed to disable copy-on-write on %s: %m", temp);
- }
-
- if (ftruncate(fd, size) < 0)
- return log_error_errno(errno, "Failed to truncate temporary file to %s: %m",
- FORMAT_BYTES(size));
-
- t->fd = TAKE_FD(fd);
- t->path = TAKE_PTR(temp);
-
- return 0;
-}
-
-static bool loop_device_error_is_fatal(const Partition *p, int r) {
- assert(p);
- return arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) || !ordered_hashmap_isempty(p->subvolumes) || p->default_subvolume;
-}
-
-static int partition_target_prepare(
- Context *context,
- Partition *p,
- uint64_t size,
- bool need_path,
- PartitionTarget **ret) {
-
- _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
- _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
- int whole_fd, r;
-
- assert(context);
- assert(p);
- assert(ret);
-
- assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
-
- t = new(PartitionTarget, 1);
- if (!t)
- return log_oom();
- *t = (PartitionTarget) {
- .fd = -EBADF,
- .whole_fd = -EBADF,
- };
-
- if (!need_path) {
- if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to partition offset: %m");
-
- t->whole_fd = whole_fd;
- *ret = TAKE_PTR(t);
- return 0;
- }
-
- /* Loopback block devices are not only useful to turn regular files into block devices, but
- * also to cut out sections of block devices into new block devices. */
-
- if (arg_offline <= 0) {
- r = loop_device_make(whole_fd, O_RDWR, p->offset, size, context->sector_size, 0, LOCK_EX, &d);
- if (r < 0 && loop_device_error_is_fatal(p, r))
- return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno);
- if (r >= 0) {
- t->loop = TAKE_PTR(d);
- *ret = TAKE_PTR(t);
- return 0;
- }
-
- log_debug_errno(r, "No access to loop devices, falling back to a regular file");
- }
-
- /* If we can't allocate a loop device, let's write to a regular file that we copy into the final
- * image so we can run in containers and without needing root privileges. On filesystems with
- * reflinking support, we can take advantage of this and just reflink the result into the image.
- */
-
- r = prepare_temporary_file(context, t, size);
- if (r < 0)
- return r;
-
- *ret = TAKE_PTR(t);
-
- return 0;
-}
-
-static int partition_target_grow(PartitionTarget *t, uint64_t size) {
- int r;
-
- assert(t);
- assert(!t->decrypted);
-
- if (t->loop) {
- r = loop_device_refresh_size(t->loop, UINT64_MAX, size);
- if (r < 0)
- return log_error_errno(r, "Failed to refresh loopback device size: %m");
- } else if (t->fd >= 0) {
- if (ftruncate(t->fd, size) < 0)
- return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m",
- t->path, FORMAT_BYTES(size));
- }
-
- return 0;
-}
-
-static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) {
- int whole_fd, r;
-
- assert(context);
- assert(p);
- assert(t);
-
- assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
-
- log_info("Syncing future partition %"PRIu64" contents to disk.", p->partno);
-
- if (t->decrypted && fsync(t->decrypted->fd) < 0)
- return log_error_errno(errno, "Failed to sync changes to '%s': %m", t->decrypted->volume);
-
- if (t->loop) {
- r = loop_device_sync(t->loop);
- if (r < 0)
- return log_error_errno(r, "Failed to sync loopback device: %m");
- } else if (t->fd >= 0) {
- struct stat st;
-
- if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to partition offset: %m");
-
- if (lseek(t->fd, 0, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to start of temporary file: %m");
-
- if (fstat(t->fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat temporary file: %m");
-
- if (st.st_size > (off_t) p->new_size)
- return log_error_errno(SYNTHETIC_ERRNO(ENOSPC),
- "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s).",
- p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size));
-
- r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC);
- if (r < 0)
- return log_error_errno(r, "Failed to copy bytes to partition: %m");
- } else {
- if (fsync(t->whole_fd) < 0)
- return log_error_errno(errno, "Failed to sync changes: %m");
- }
-
- return 0;
-}
-
-static int partition_encrypt(Context *context, Partition *p, PartitionTarget *target, bool offline) {
-#if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && (HAVE_CRYPT_REENCRYPT_RUN || HAVE_CRYPT_REENCRYPT)
- const char *node = partition_target_path(target);
- struct crypt_params_luks2 luks_params = {
- .label = strempty(ASSERT_PTR(p)->new_label),
- .sector_size = ASSERT_PTR(context)->fs_sector_size,
- .data_device = offline ? node : NULL,
- };
- struct crypt_params_reencrypt reencrypt_params = {
- .mode = CRYPT_REENCRYPT_ENCRYPT,
- .direction = CRYPT_REENCRYPT_BACKWARD,
- .resilience = "datashift",
- .data_shift = LUKS2_METADATA_SIZE / 512,
- .luks2 = &luks_params,
- .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT,
- };
- _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL;
-#if HAVE_TPM2
- _cleanup_(erase_and_freep) char *base64_encoded = NULL;
-#endif
- _cleanup_fclose_ FILE *h = NULL;
- _cleanup_free_ char *hp = NULL, *vol = NULL, *dm_name = NULL;
- const char *passphrase = NULL;
- size_t passphrase_size = 0;
- const char *vt;
- int r;
-
- assert(context);
- assert(p);
- assert(p->encrypt != ENCRYPT_OFF);
-
- r = dlopen_cryptsetup();
- if (r < 0)
- return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m");
-
- log_info("Encrypting future partition %" PRIu64 "...", p->partno);
-
- if (offline) {
- r = var_tmp_dir(&vt);
- if (r < 0)
- return log_error_errno(r, "Failed to determine temporary files directory: %m");
-
- r = fopen_temporary_child(vt, &h, &hp);
- if (r < 0)
- return log_error_errno(r, "Failed to create temporary LUKS header file: %m");
-
- /* Weird cryptsetup requirement which requires the header file to be the size of at least one
- * sector. */
- if (ftruncate(fileno(h), luks_params.sector_size) < 0)
- return log_error_errno(errno, "Failed to grow temporary LUKS header file: %m");
- } else {
- if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0)
- return log_oom();
-
- vol = path_join("/dev/mapper/", dm_name);
- if (!vol)
- return log_oom();
- }
-
- r = sym_crypt_init(&cd, offline ? hp : node);
- if (r < 0)
- return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp);
-
- cryptsetup_enable_logging(cd);
-
- if (offline) {
- /* Disable kernel keyring usage by libcryptsetup as a workaround for
- * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can
- * do offline encryption even when repart is running in a container. */
- r = sym_crypt_volume_key_keyring(cd, false);
- if (r < 0)
- return log_error_errno(r, "Failed to disable kernel keyring: %m");
-
- r = sym_crypt_metadata_locking(cd, false);
- if (r < 0)
- return log_error_errno(r, "Failed to disable metadata locking: %m");
-
- r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512);
- if (r < 0)
- return log_error_errno(r, "Failed to set data offset: %m");
- }
-
- r = sym_crypt_format(
- cd,
- CRYPT_LUKS2,
- "aes",
- "xts-plain64",
- SD_ID128_TO_UUID_STRING(p->luks_uuid),
- NULL,
- VOLUME_KEY_SIZE,
- &luks_params);
- if (r < 0)
- return log_error_errno(r, "Failed to LUKS2 format future partition: %m");
-
- if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) {
- r = sym_crypt_keyslot_add_by_volume_key(
- cd,
- CRYPT_ANY_SLOT,
- NULL,
- VOLUME_KEY_SIZE,
- strempty(arg_key),
- arg_key_size);
- if (r < 0)
- return log_error_errno(r, "Failed to add LUKS2 key: %m");
-
- passphrase = strempty(arg_key);
- passphrase_size = arg_key_size;
- }
-
- if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) {
-#if HAVE_TPM2
- _cleanup_(iovec_done) struct iovec pubkey = {}, srk = {};
- _cleanup_(iovec_done_erase) struct iovec secret = {};
- _cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;
- ssize_t base64_encoded_size;
- int keyslot;
- TPM2Flags flags = 0;
-
- if (arg_tpm2_public_key_pcr_mask != 0) {
- r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey.iov_base, &pubkey.iov_len);
- if (r < 0) {
- if (arg_tpm2_public_key || r != -ENOENT)
- return log_error_errno(r, "Failed to read TPM PCR public key: %m");
-
- log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m");
- arg_tpm2_public_key_pcr_mask = 0;
- }
- }
-
- TPM2B_PUBLIC public;
- if (iovec_is_set(&pubkey)) {
- r = tpm2_tpm2b_public_from_pem(pubkey.iov_base, pubkey.iov_len, &public);
- if (r < 0)
- return log_error_errno(r, "Could not convert public key to TPM2B_PUBLIC: %m");
- }
-
- _cleanup_(tpm2_pcrlock_policy_done) Tpm2PCRLockPolicy pcrlock_policy = {};
- if (arg_tpm2_pcrlock) {
- r = tpm2_pcrlock_policy_load(arg_tpm2_pcrlock, &pcrlock_policy);
- if (r < 0)
- return r;
-
- flags |= TPM2_FLAGS_USE_PCRLOCK;
- }
-
- _cleanup_(tpm2_context_unrefp) Tpm2Context *tpm2_context = NULL;
- TPM2B_PUBLIC device_key_public = {};
- if (arg_tpm2_device_key) {
- r = tpm2_load_public_key_file(arg_tpm2_device_key, &device_key_public);
- if (r < 0)
- return r;
-
- if (!tpm2_pcr_values_has_all_values(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Must provide all PCR values when using TPM2 device key.");
- } else {
- r = tpm2_context_new_or_warn(arg_tpm2_device, &tpm2_context);
- if (r < 0)
- return r;
-
- if (!tpm2_pcr_values_has_all_values(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values)) {
- r = tpm2_pcr_read_missing_values(tpm2_context, arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values);
- if (r < 0)
- return log_error_errno(r, "Could not read pcr values: %m");
- }
- }
-
- uint16_t hash_pcr_bank = 0;
- uint32_t hash_pcr_mask = 0;
- if (arg_tpm2_n_hash_pcr_values > 0) {
- size_t hash_count;
- r = tpm2_pcr_values_hash_count(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, &hash_count);
- if (r < 0)
- return log_error_errno(r, "Could not get hash count: %m");
-
- if (hash_count > 1)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Multiple PCR banks selected.");
-
- hash_pcr_bank = arg_tpm2_hash_pcr_values[0].hash;
- r = tpm2_pcr_values_to_mask(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, hash_pcr_bank, &hash_pcr_mask);
- if (r < 0)
- return log_error_errno(r, "Could not get hash mask: %m");
- }
-
- TPM2B_DIGEST policy_hash[2] = {
- TPM2B_DIGEST_MAKE(NULL, TPM2_SHA256_DIGEST_SIZE),
- TPM2B_DIGEST_MAKE(NULL, TPM2_SHA256_DIGEST_SIZE),
- };
- size_t n_policy_hash = 1;
-
- /* If both PCR public key unlock and pcrlock unlock is selected, then shard the encryption key. */
- r = tpm2_calculate_sealing_policy(
- arg_tpm2_hash_pcr_values,
- arg_tpm2_n_hash_pcr_values,
- iovec_is_set(&pubkey) ? &public : NULL,
- /* use_pin= */ false,
- arg_tpm2_pcrlock && !iovec_is_set(&pubkey) ? &pcrlock_policy : NULL,
- policy_hash + 0);
- if (r < 0)
- return log_error_errno(r, "Could not calculate sealing policy digest for shard 0: %m");
-
- if (arg_tpm2_pcrlock && iovec_is_set(&pubkey)) {
- r = tpm2_calculate_sealing_policy(
- arg_tpm2_hash_pcr_values,
- arg_tpm2_n_hash_pcr_values,
- /* pubkey= */ NULL, /* Turn this one off for the 2nd shard */
- /* use_pin= */ false,
- &pcrlock_policy, /* But turn this one on */
- policy_hash + 1);
- if (r < 0)
- return log_error_errno(r, "Could not calculate sealing policy digest for shard 1: %m");
-
- n_policy_hash++;
- }
-
- struct iovec *blobs = NULL;
- size_t n_blobs = 0;
- CLEANUP_ARRAY(blobs, n_blobs, iovec_array_free);
-
- if (arg_tpm2_device_key) {
- if (n_policy_hash > 1)
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
- "Combined signed PCR policies and pcrlock policies cannot be calculated offline, currently.");
-
- blobs = new0(struct iovec, 1);
- if (!blobs)
- return log_oom();
-
- n_blobs = 1;
-
- r = tpm2_calculate_seal(
- arg_tpm2_seal_key_handle,
- &device_key_public,
- /* attributes= */ NULL,
- /* secret= */ NULL,
- policy_hash + 0,
- /* pin= */ NULL,
- &secret,
- blobs + 0,
- &srk);
- } else
- r = tpm2_seal(tpm2_context,
- arg_tpm2_seal_key_handle,
- policy_hash,
- n_policy_hash,
- /* pin= */ NULL,
- &secret,
- &blobs,
- &n_blobs,
- /* ret_primary_alg= */ NULL,
- &srk);
- if (r < 0)
- return log_error_errno(r, "Failed to seal to TPM2: %m");
-
- base64_encoded_size = base64mem(secret.iov_base, secret.iov_len, &base64_encoded);
- if (base64_encoded_size < 0)
- return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m");
-
- r = cryptsetup_set_minimal_pbkdf(cd);
- if (r < 0)
- return log_error_errno(r, "Failed to set minimal PBKDF: %m");
-
- keyslot = sym_crypt_keyslot_add_by_volume_key(
- cd,
- CRYPT_ANY_SLOT,
- /* volume_key= */ NULL,
- /* volume_key_size= */ VOLUME_KEY_SIZE,
- base64_encoded,
- base64_encoded_size);
- if (keyslot < 0)
- return log_error_errno(keyslot, "Failed to add new TPM2 key: %m");
-
- struct iovec policy_hash_as_iovec[2] = {
- IOVEC_MAKE(policy_hash[0].buffer, policy_hash[0].size),
- IOVEC_MAKE(policy_hash[1].buffer, policy_hash[1].size),
- };
-
- r = tpm2_make_luks2_json(
- keyslot,
- hash_pcr_mask,
- hash_pcr_bank,
- &pubkey,
- arg_tpm2_public_key_pcr_mask,
- /* primary_alg= */ 0,
- blobs,
- n_blobs,
- policy_hash_as_iovec,
- n_policy_hash,
- /* salt= */ NULL, /* no salt because tpm2_seal has no pin */
- &srk,
- &pcrlock_policy.nv_handle,
- flags,
- &v);
- if (r < 0)
- return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m");
-
- r = cryptsetup_add_token_json(cd, v);
- if (r < 0)
- return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m");
-
- passphrase = base64_encoded;
- passphrase_size = strlen(base64_encoded);
-#else
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
- "Support for TPM2 enrollment not enabled.");
-#endif
- }
-
- if (offline) {
- r = sym_crypt_reencrypt_init_by_passphrase(
- cd,
- NULL,
- passphrase,
- passphrase_size,
- CRYPT_ANY_SLOT,
- 0,
- sym_crypt_get_cipher(cd),
- sym_crypt_get_cipher_mode(cd),
- &reencrypt_params);
- if (r < 0)
- return log_error_errno(r, "Failed to prepare for reencryption: %m");
-
- /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we
- * have to do that ourselves. */
-
- sym_crypt_free(cd);
- cd = NULL;
-
- r = sym_crypt_init(&cd, node);
- if (r < 0)
- return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node);
-
- r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp);
- if (r < 0)
- return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node);
-
- reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY;
-
- r = sym_crypt_reencrypt_init_by_passphrase(
- cd,
- NULL,
- passphrase,
- passphrase_size,
- CRYPT_ANY_SLOT,
- 0,
- NULL,
- NULL,
- &reencrypt_params);
- if (r < 0)
- return log_error_errno(r, "Failed to load reencryption context: %m");
-
-#if HAVE_CRYPT_REENCRYPT_RUN
- r = sym_crypt_reencrypt_run(cd, NULL, NULL);
-#else
- r = sym_crypt_reencrypt(cd, NULL);
-#endif
- if (r < 0)
- return log_error_errno(r, "Failed to encrypt %s: %m", node);
- } else {
- _cleanup_free_ DecryptedPartitionTarget *t = NULL;
- _cleanup_close_ int dev_fd = -1;
-
- r = sym_crypt_activate_by_volume_key(
- cd,
- dm_name,
- NULL,
- VOLUME_KEY_SIZE,
- (arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0) | CRYPT_ACTIVATE_PRIVATE);
- if (r < 0)
- return log_error_errno(r, "Failed to activate LUKS superblock: %m");
-
- dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY);
- if (dev_fd < 0)
- return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol);
-
- if (flock(dev_fd, LOCK_EX) < 0)
- return log_error_errno(errno, "Failed to lock '%s': %m", vol);
-
- t = new(DecryptedPartitionTarget, 1);
- if (!t)
- return log_oom();
-
- *t = (DecryptedPartitionTarget) {
- .fd = TAKE_FD(dev_fd),
- .dm_name = TAKE_PTR(dm_name),
- .volume = TAKE_PTR(vol),
- .device = TAKE_PTR(cd),
- };
-
- target->decrypted = TAKE_PTR(t);
- }
-
- log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno);
-
- return 0;
-#else
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
- "libcryptsetup is not supported or is missing required symbols, cannot encrypt.");
-#endif
-}
-
-static int partition_format_verity_hash(
- Context *context,
- Partition *p,
- const char *node,
- const char *data_node) {
-
-#if HAVE_LIBCRYPTSETUP
- Partition *dp;
- _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
- _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL;
- _cleanup_free_ char *hint = NULL;
- int r;
-
- assert(context);
- assert(p);
- assert(p->verity == VERITY_HASH);
- assert(data_node);
-
- if (p->dropped)
- return 0;
-
- if (PARTITION_EXISTS(p)) /* Never format existing partitions */
- return 0;
-
- /* Minimized partitions will use the copy blocks logic so skip those here. */
- if (p->copy_blocks_fd >= 0)
- return 0;
-
- assert_se(dp = p->siblings[VERITY_DATA]);
- assert(!dp->dropped);
-
- (void) partition_hint(p, node, &hint);
-
- r = dlopen_cryptsetup();
- if (r < 0)
- return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m");
-
- if (!node) {
- r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t);
- if (r < 0)
- return r;
-
- node = partition_target_path(t);
- }
-
- r = sym_crypt_init(&cd, node);
- if (r < 0)
- return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node);
-
- cryptsetup_enable_logging(cd);
-
- r = sym_crypt_format(
- cd, CRYPT_VERITY, NULL, NULL, SD_ID128_TO_UUID_STRING(p->verity_uuid), NULL, 0,
- &(struct crypt_params_verity){
- .data_device = data_node,
- .flags = CRYPT_VERITY_CREATE_HASH,
- .hash_name = "sha256",
- .hash_type = 1,
- .data_block_size = p->verity_data_block_size,
- .hash_block_size = p->verity_hash_block_size,
- .salt_size = sizeof(p->verity_salt),
- .salt = (const char*)p->verity_salt,
- });
- if (r < 0) {
- /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it
- * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the
- * partition is too small. */
- if (r == -EIO && errno == ENOSPC)
- return log_error_errno(errno,
- "Verity hash data does not fit in partition %s with size %s",
- strna(hint), FORMAT_BYTES(p->new_size));
-
- return log_error_errno(r, "Failed to setup verity hash data of partition %s: %m", strna(hint));
- }
-
- if (t) {
- r = partition_target_sync(context, p, t);
- if (r < 0)
- return r;
- }
-
- r = sym_crypt_get_volume_key_size(cd);
- if (r < 0)
- return log_error_errno(r, "Failed to determine verity root hash size of partition %s: %m", strna(hint));
-
- _cleanup_(iovec_done) struct iovec rh = {
- .iov_base = malloc(r),
- .iov_len = r,
- };
- if (!rh.iov_base)
- return log_oom();
-
- r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh.iov_base, &rh.iov_len, NULL, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to get verity root hash of partition %s: %m", strna(hint));
-
- assert(rh.iov_len >= sizeof(sd_id128_t) * 2);
-
- if (!dp->new_uuid_is_set) {
- memcpy_safe(dp->new_uuid.bytes, rh.iov_base, sizeof(sd_id128_t));
- dp->new_uuid_is_set = true;
- }
-
- if (!p->new_uuid_is_set) {
- memcpy_safe(p->new_uuid.bytes, (uint8_t*) rh.iov_base + (rh.iov_len - sizeof(sd_id128_t)), sizeof(sd_id128_t));
- p->new_uuid_is_set = true;
- }
-
- p->roothash = TAKE_STRUCT(rh);
-
- return 0;
-#else
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes.");
-#endif
-}
-
-static int sign_verity_roothash(
- const struct iovec *roothash,
- X509 *certificate,
- EVP_PKEY *private_key,
- struct iovec *ret_signature) {
-
-#if HAVE_OPENSSL
- _cleanup_(BIO_freep) BIO *rb = NULL;
- _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL;
- _cleanup_free_ char *hex = NULL;
- _cleanup_free_ uint8_t *sig = NULL;
- int sigsz;
-
- assert(roothash);
- assert(private_key);
- assert(iovec_is_set(roothash));
- assert(ret_signature);
-
- hex = hexmem(roothash->iov_base, roothash->iov_len);
- if (!hex)
- return log_oom();
-
- rb = BIO_new_mem_buf(hex, -1);
- if (!rb)
- return log_oom();
-
- p7 = PKCS7_sign(certificate, private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY);
- if (!p7)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s",
- ERR_error_string(ERR_get_error(), NULL));
-
- sigsz = i2d_PKCS7(p7, &sig);
- if (sigsz < 0)
- return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s",
- ERR_error_string(ERR_get_error(), NULL));
-
- *ret_signature = IOVEC_MAKE(TAKE_PTR(sig), sigsz);
-
- return 0;
-#else
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "OpenSSL is not supported, cannot setup verity signature.");
-#endif
-}
-
-static int partition_format_verity_sig(Context *context, Partition *p) {
- _cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;
- _cleanup_(iovec_done) struct iovec sig = {};
- _cleanup_free_ char *text = NULL, *hint = NULL;
- Partition *hp;
- uint8_t fp[X509_FINGERPRINT_SIZE];
- int whole_fd, r;
-
- assert(p->verity == VERITY_SIG);
-
- if (p->dropped)
- return 0;
-
- if (PARTITION_EXISTS(p))
- return 0;
-
- (void) partition_hint(p, context->node, &hint);
-
- assert_se(hp = p->siblings[VERITY_HASH]);
- assert(!hp->dropped);
-
- assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
-
- r = sign_verity_roothash(&hp->roothash, context->certificate, context->private_key, &sig);
- if (r < 0)
- return r;
-
- r = x509_fingerprint(context->certificate, fp);
- if (r < 0)
- return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m");
-
- r = sd_json_buildo(
- &v,
- SD_JSON_BUILD_PAIR("rootHash", SD_JSON_BUILD_HEX(hp->roothash.iov_base, hp->roothash.iov_len)),
- SD_JSON_BUILD_PAIR("certificateFingerprint", SD_JSON_BUILD_HEX(fp, sizeof(fp))),
- SD_JSON_BUILD_PAIR("signature", JSON_BUILD_IOVEC_BASE64(&sig)));
- if (r < 0)
- return log_error_errno(r, "Failed to build verity signature JSON object: %m");
-
- r = sd_json_variant_format(v, 0, &text);
- if (r < 0)
- return log_error_errno(r, "Failed to format verity signature JSON object: %m");
-
- if (strlen(text)+1 > p->new_size)
- return log_error_errno(SYNTHETIC_ERRNO(E2BIG), "Verity signature too long for partition.");
-
- r = strgrowpad0(&text, p->new_size);
- if (r < 0)
- return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size));
-
- if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to partition %s offset: %m", strna(hint));
-
- r = loop_write(whole_fd, text, p->new_size);
- if (r < 0)
- return log_error_errno(r, "Failed to write verity signature to partition %s: %m", strna(hint));
-
- if (fsync(whole_fd) < 0)
- return log_error_errno(errno, "Failed to synchronize partition %s: %m", strna(hint));
-
- return 0;
-}
-
-static int progress_bytes(uint64_t n_bytes, void *userdata) {
- Partition *p = ASSERT_PTR(userdata);
-
- p->copy_blocks_done += n_bytes;
-
- (void) draw_progress_barf(
- p->copy_blocks_done >= p->copy_blocks_size ? 100.0 : /* catch division be zero */
- 100.0 * (double) p->copy_blocks_done / (double) p->copy_blocks_size,
- "%s %s %s %s/%s",
- strna(p->copy_blocks_path),
- special_glyph(SPECIAL_GLYPH_ARROW_RIGHT),
- strna(p->definition_path),
- FORMAT_BYTES(p->copy_blocks_done),
- FORMAT_BYTES(p->copy_blocks_size));
-
- return 0;
-}
-
-static int context_copy_blocks(Context *context) {
- int r;
-
- assert(context);
-
- /* Copy in file systems on the block level */
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
-
- if (p->copy_blocks_fd < 0)
- continue;
-
- if (p->dropped)
- continue;
-
- if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */
- continue;
-
- if (partition_type_defer(&p->type))
- continue;
-
- assert(p->new_size != UINT64_MAX);
-
- size_t extra = p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0;
-
- if (p->copy_blocks_size == UINT64_MAX)
- p->copy_blocks_size = LESS_BY(p->new_size, extra);
-
- assert(p->new_size >= p->copy_blocks_size + extra);
-
- usec_t start_timestamp = now(CLOCK_MONOTONIC);
-
- r = partition_target_prepare(context, p, p->new_size,
- /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH],
- &t);
- if (r < 0)
- return r;
-
- if (p->encrypt != ENCRYPT_OFF && t->loop) {
- r = partition_encrypt(context, p, t, /* offline = */ false);
- if (r < 0)
- return r;
- }
-
- if (p->copy_blocks_offset == UINT64_MAX)
- log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".",
- p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno);
- else {
- log_info("Copying in '%s' @ %" PRIu64 " (%s) on block level into future partition %" PRIu64 ".",
- p->copy_blocks_path, p->copy_blocks_offset, FORMAT_BYTES(p->copy_blocks_size), p->partno);
-
- if (lseek(p->copy_blocks_fd, p->copy_blocks_offset, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to copy blocks offset in %s: %m", p->copy_blocks_path);
- }
-
- r = copy_bytes_full(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK, /* ret_remains= */ NULL, /* ret_remains_size= */ NULL, progress_bytes, p);
- clear_progress_bar(/* prefix= */ NULL);
- if (r < 0)
- return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path);
-
- log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path);
-
- if (p->encrypt != ENCRYPT_OFF && !t->loop) {
- r = partition_encrypt(context, p, t, /* offline = */ true);
- if (r < 0)
- return r;
- }
-
- r = partition_target_sync(context, p, t);
- if (r < 0)
- return r;
-
- usec_t time_spent = usec_sub_unsigned(now(CLOCK_MONOTONIC), start_timestamp);
- if (time_spent > 250 * USEC_PER_MSEC) /* Show throughput, but not if we spent too little time on it, since it's just noise then */
- log_info("Block level copying and synchronization of partition %" PRIu64 " complete in %s (%s/s).",
- p->partno, FORMAT_TIMESPAN(time_spent, 0), FORMAT_BYTES((uint64_t) ((double) p->copy_blocks_size / time_spent * USEC_PER_SEC)));
- else
- log_info("Block level copying and synchronization of partition %" PRIu64 " complete in %s.",
- p->partno, FORMAT_TIMESPAN(time_spent, 0));
-
- if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) {
- r = partition_format_verity_hash(context, p->siblings[VERITY_HASH],
- /* node = */ NULL, partition_target_path(t));
- if (r < 0)
- return r;
- }
-
- if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) {
- r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]);
- if (r < 0)
- return r;
- }
- }
-
- return 0;
-}
-
-static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) {
- _cleanup_free_ struct stat *st = NULL;
- int r;
-
- assert(path);
- assert(denylist);
-
- st = new(struct stat, 1);
- if (!st)
- return log_oom();
-
- r = chase_and_stat(path, arg_copy_source, CHASE_PREFIX_ROOT, NULL, st);
- if (r == -ENOENT)
- return 0;
- if (r < 0)
- return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), path);
-
- r = hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type));
- if (r == -EEXIST)
- return 0;
- if (r < 0)
- return log_oom();
- if (r > 0)
- TAKE_PTR(st);
-
- return 0;
-}
-
-static int shallow_join_strv(char ***ret, char **a, char **b) {
- _cleanup_free_ char **joined = NULL;
- char **iter;
-
- assert(ret);
-
- joined = new(char*, strv_length(a) + strv_length(b) + 1);
- if (!joined)
- return log_oom();
-
- iter = joined;
-
- STRV_FOREACH(i, a)
- *(iter++) = *i;
-
- STRV_FOREACH(i, b)
- if (!strv_contains(joined, *i))
- *(iter++) = *i;
-
- *iter = NULL;
-
- *ret = TAKE_PTR(joined);
- return 0;
-}
-
-static int make_copy_files_denylist(
- Context *context,
- const Partition *p,
- const char *source,
- const char *target,
- Hashmap **ret) {
-
- _cleanup_hashmap_free_ Hashmap *denylist = NULL;
- _cleanup_free_ char **override_exclude_src = NULL, **override_exclude_tgt = NULL;
- int r;
-
- assert(context);
- assert(p);
- assert(source);
- assert(target);
- assert(ret);
-
- /* Always exclude the top level APIVFS and temporary directories since the contents of these
- * directories are almost certainly not intended to end up in an image. */
-
- NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) {
- r = add_exclude_path(s, &denylist, DENY_CONTENTS);
- if (r < 0)
- return r;
- }
-
- /* Add the user configured excludes. */
-
- if (p->suppressing) {
- r = shallow_join_strv(&override_exclude_src,
- p->exclude_files_source,
- p->suppressing->exclude_files_source);
- if (r < 0)
- return r;
- r = shallow_join_strv(&override_exclude_tgt,
- p->exclude_files_target,
- p->suppressing->exclude_files_target);
- if (r < 0)
- return r;
- }
-
- STRV_FOREACH(e, override_exclude_src ?: p->exclude_files_source) {
- if (path_startswith(source, *e))
- return 1;
-
- r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE);
- if (r < 0)
- return r;
- }
-
- STRV_FOREACH(e, override_exclude_tgt ?: p->exclude_files_target) {
- _cleanup_free_ char *path = NULL;
-
- if (path_startswith(target, *e))
- return 1;
-
- const char *s = path_startswith(*e, target);
- if (!s)
- continue;
-
- path = path_join(source, s);
- if (!path)
- return log_oom();
-
- r = add_exclude_path(path, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE);
- if (r < 0)
- return r;
- }
-
- /* If we're populating a root partition, we don't want any files to end up under the APIVFS mount
- * points. While we already exclude <source>/proc, users could still do something such as
- * "CopyFiles=/abc:/". Now, if /abc has a proc subdirectory with files in it, those will end up in
- * the top level proc directory in the root partition, which we want to avoid. To deal with these
- * cases, whenever we're populating a root partition and the target of CopyFiles= is the root
- * directory of the root partition, we exclude all directories under the source that are named after
- * APIVFS directories or named after mount points of other partitions that are also going to be part
- * of the image. */
-
- if (p->type.designator == PARTITION_ROOT && empty_or_root(target)) {
- LIST_FOREACH(partitions, q, context->partitions) {
- if (q->type.designator == PARTITION_ROOT)
- continue;
-
- const char *sources = gpt_partition_type_mountpoint_nulstr(q->type);
- if (!sources)
- continue;
-
- NULSTR_FOREACH(s, sources) {
- _cleanup_free_ char *path = NULL;
-
- /* Exclude only the children of partition mount points so that the nested
- * partition mount point itself still ends up in the upper partition. */
-
- path = path_join(source, s);
- if (!path)
- return -ENOMEM;
-
- r = add_exclude_path(path, &denylist, DENY_CONTENTS);
- if (r < 0)
- return r;
- }
- }
-
- NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) {
- _cleanup_free_ char *path = NULL;
-
- path = path_join(source, s);
- if (!path)
- return -ENOMEM;
-
- r = add_exclude_path(path, &denylist, DENY_CONTENTS);
- if (r < 0)
- return r;
- }
- }
-
- *ret = TAKE_PTR(denylist);
- return 0;
-}
-
-static int add_subvolume_path(const char *path, Set **subvolumes) {
- _cleanup_free_ struct stat *st = NULL;
- int r;
-
- assert(path);
- assert(subvolumes);
-
- st = new(struct stat, 1);
- if (!st)
- return log_oom();
-
- r = chase_and_stat(path, arg_copy_source, CHASE_PREFIX_ROOT, NULL, st);
- if (r == -ENOENT)
- return 0;
- if (r < 0)
- return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), path);
-
- r = set_ensure_consume(subvolumes, &inode_hash_ops, TAKE_PTR(st));
- if (r < 0)
- return log_oom();
-
- return 0;
-}
-
-static int make_subvolumes_strv(const Partition *p, char ***ret) {
- _cleanup_strv_free_ char **subvolumes = NULL;
- Subvolume *subvolume;
- int r;
-
- assert(p);
- assert(ret);
-
- ORDERED_HASHMAP_FOREACH(subvolume, p->subvolumes)
- if (strv_extend(&subvolumes, subvolume->path) < 0)
- return log_oom();
-
- if (p->suppressing) {
- char **suppressing;
-
- r = make_subvolumes_strv(p->suppressing, &suppressing);
- if (r < 0)
- return r;
-
- r = strv_extend_strv_consume(&subvolumes, suppressing, /* filter_duplicates= */ true);
- if (r < 0)
- return log_oom();
- }
-
- *ret = TAKE_PTR(subvolumes);
- return 0;
-}
-
-static int make_subvolumes_set(
- const Partition *p,
- const char *source,
- const char *target,
- Set **ret) {
-
- _cleanup_strv_free_ char **paths = NULL;
- _cleanup_set_free_ Set *subvolumes = NULL;
- int r;
-
- assert(p);
- assert(target);
- assert(ret);
-
- r = make_subvolumes_strv(p, &paths);
- if (r < 0)
- return r;
-
- STRV_FOREACH(subvolume, paths) {
- _cleanup_free_ char *path = NULL;
-
- const char *s = path_startswith(*subvolume, target);
- if (!s)
- continue;
-
- path = path_join(source, s);
- if (!path)
- return log_oom();
-
- r = add_subvolume_path(path, &subvolumes);
- if (r < 0)
- return r;
- }
-
- *ret = TAKE_PTR(subvolumes);
- return 0;
-}
-
-static usec_t epoch_or_infinity(void) {
- static usec_t cache;
- static bool cached = false;
- uint64_t epoch;
- int r;
-
- if (cached)
- return cache;
-
- r = secure_getenv_uint64("SOURCE_DATE_EPOCH", &epoch);
- if (r >= 0) {
- if (epoch <= UINT64_MAX / USEC_PER_SEC) { /* Overflow check */
- cached = true;
- return (cache = epoch * USEC_PER_SEC);
- }
- r = -ERANGE;
- }
- if (r != -ENXIO)
- log_debug_errno(r, "Failed to parse $SOURCE_DATE_EPOCH, ignoring: %m");
-
- cached = true;
- return (cache = USEC_INFINITY);
-}
-
-static int file_is_denylisted(const char *source, Hashmap *denylist) {
- _cleanup_close_ int pfd = -EBADF;
- struct stat st, rst;
- int r;
-
- r = chase_and_stat(source, arg_copy_source, CHASE_PREFIX_ROOT, /*ret_path=*/ NULL, &st);
- if (r < 0)
- return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), source);
-
- if (PTR_TO_INT(hashmap_get(denylist, &st)) == DENY_INODE)
- return 1;
-
- if (stat(empty_to_root(arg_copy_source), &rst) < 0)
- return log_error_errno(errno, "Failed to stat '%s': %m", empty_to_root(arg_copy_source));
-
- pfd = chase_and_open_parent(source, arg_copy_source, CHASE_PREFIX_ROOT, /*ret_filename=*/ NULL);
- if (pfd < 0)
- return log_error_errno(pfd, "Failed to chase '%s/%s': %m", strempty(arg_copy_source), source);
-
- for (;;) {
- if (fstat(pfd, &st) < 0)
- return log_error_errno(errno, "Failed to stat parent: %m");
-
- if (PTR_TO_INT(hashmap_get(denylist, &st)) != DENY_DONT)
- return 1;
-
- if (stat_inode_same(&st, &rst))
- break;
-
- _cleanup_close_ int new_pfd = openat(pfd, "..", O_DIRECTORY|O_RDONLY);
- if (new_pfd < 0)
- return log_error_errno(errno, "Failed to open parent directory: %m");
-
- close_and_replace(pfd, new_pfd);
- }
-
- return 0;
-}
-
-static int do_copy_files(Context *context, Partition *p, const char *root) {
- _cleanup_strv_free_ char **subvolumes = NULL;
- _cleanup_free_ char **override_copy_files = NULL;
- int r;
-
- assert(p);
- assert(root);
-
- r = make_subvolumes_strv(p, &subvolumes);
- if (r < 0)
- return r;
-
- if (p->suppressing) {
- r = shallow_join_strv(&override_copy_files, p->copy_files, p->suppressing->copy_files);
- if (r < 0)
- return r;
- }
-
- /* copy_tree_at() automatically copies the permissions of source directories to target directories if
- * it created them. However, the root directory is created by us, so we have to manually take care
- * that it is initialized. We use the first source directory targeting "/" as the metadata source for
- * the root directory. */
- STRV_FOREACH_PAIR(source, target, override_copy_files ?: p->copy_files) {
- _cleanup_close_ int rfd = -EBADF, sfd = -EBADF;
-
- if (!path_equal(*target, "/"))
- continue;
-
- rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
- if (rfd < 0)
- return -errno;
-
- sfd = chase_and_open(*source, arg_copy_source, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL);
- if (sfd == -ENOTDIR)
- continue;
- if (sfd < 0)
- return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_copy_source), *source);
-
- (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS);
- (void) copy_access(sfd, rfd);
- (void) copy_times(sfd, rfd, 0);
-
- break;
- }
-
- STRV_FOREACH_PAIR(source, target, override_copy_files ?: p->copy_files) {
- _cleanup_hashmap_free_ Hashmap *denylist = NULL;
- _cleanup_set_free_ Set *subvolumes_by_source_inode = NULL;
- _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF;
- usec_t ts = epoch_or_infinity();
-
- r = make_copy_files_denylist(context, p, *source, *target, &denylist);
- if (r < 0)
- return r;
- if (r > 0)
- continue;
-
- r = make_subvolumes_set(p, *source, *target, &subvolumes_by_source_inode);
- if (r < 0)
- return r;
-
- sfd = chase_and_open(*source, arg_copy_source, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL);
- if (sfd == -ENOENT) {
- log_notice_errno(sfd, "Failed to open source file '%s%s', skipping: %m", strempty(arg_copy_source), *source);
- continue;
- }
- if (sfd < 0)
- return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_copy_source), *source);
-
- r = fd_verify_regular(sfd);
- if (r < 0) {
- if (r != -EISDIR)
- return log_error_errno(r, "Failed to check type of source file '%s': %m", *source);
-
- /* We are looking at a directory */
- tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
- if (tfd < 0) {
- _cleanup_free_ char *dn = NULL, *fn = NULL;
-
- if (tfd != -ENOENT)
- return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target);
-
- r = path_extract_filename(*target, &fn);
- if (r < 0)
- return log_error_errno(r, "Failed to extract filename from '%s': %m", *target);
-
- r = path_extract_directory(*target, &dn);
- if (r < 0)
- return log_error_errno(r, "Failed to extract directory from '%s': %m", *target);
-
- r = mkdir_p_root_full(root, dn, UID_INVALID, GID_INVALID, 0755, ts, subvolumes);
- if (r < 0)
- return log_error_errno(r, "Failed to create parent directory '%s': %m", dn);
-
- pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
- if (pfd < 0)
- return log_error_errno(pfd, "Failed to open parent directory of target: %m");
-
- r = copy_tree_at(
- sfd, ".",
- pfd, fn,
- UID_INVALID, GID_INVALID,
- COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE|COPY_RESTORE_DIRECTORY_TIMESTAMPS,
- denylist, subvolumes_by_source_inode);
- } else
- r = copy_tree_at(
- sfd, ".",
- tfd, ".",
- UID_INVALID, GID_INVALID,
- COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE|COPY_RESTORE_DIRECTORY_TIMESTAMPS,
- denylist, subvolumes_by_source_inode);
- if (r < 0)
- return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m",
- strempty(arg_copy_source), *source, strempty(root), *target);
- } else {
- _cleanup_free_ char *dn = NULL, *fn = NULL;
-
- /* We are looking at a regular file */
-
- r = file_is_denylisted(*source, denylist);
- if (r < 0)
- return r;
- if (r > 0) {
- log_debug("%s is in the denylist, ignoring", *source);
- continue;
- }
-
- r = path_extract_filename(*target, &fn);
- if (r == -EADDRNOTAVAIL || r == O_DIRECTORY)
- return log_error_errno(SYNTHETIC_ERRNO(EISDIR),
- "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source);
- if (r < 0)
- return log_error_errno(r, "Failed to extract filename from '%s': %m", *target);
-
- r = path_extract_directory(*target, &dn);
- if (r < 0)
- return log_error_errno(r, "Failed to extract directory from '%s': %m", *target);
-
- r = mkdir_p_root_full(root, dn, UID_INVALID, GID_INVALID, 0755, ts, subvolumes);
- if (r < 0)
- return log_error_errno(r, "Failed to create parent directory: %m");
-
- pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
- if (pfd < 0)
- return log_error_errno(pfd, "Failed to open parent directory of target: %m");
-
- tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700);
- if (tfd < 0)
- return log_error_errno(errno, "Failed to create target file '%s': %m", *target);
-
- r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT|COPY_TRUNCATE);
- if (r < 0)
- return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_copy_source), *target);
-
- (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS);
- (void) copy_access(sfd, tfd);
- (void) copy_times(sfd, tfd, 0);
-
- if (ts != USEC_INFINITY) {
- struct timespec tspec;
- timespec_store(&tspec, ts);
-
- if (futimens(pfd, (const struct timespec[2]) { TIMESPEC_OMIT, tspec }) < 0)
- return -errno;
- }
- }
- }
-
- return 0;
-}
-
-static int do_make_directories(Partition *p, const char *root) {
- _cleanup_strv_free_ char **subvolumes = NULL;
- _cleanup_free_ char **override_dirs = NULL;
- int r;
-
- assert(p);
- assert(root);
-
- r = make_subvolumes_strv(p, &subvolumes);
- if (r < 0)
- return r;
-
- if (p->suppressing) {
- r = shallow_join_strv(&override_dirs, p->make_directories, p->suppressing->make_directories);
- if (r < 0)
- return r;
- }
-
- STRV_FOREACH(d, override_dirs ?: p->make_directories) {
- r = mkdir_p_root_full(root, *d, UID_INVALID, GID_INVALID, 0755, epoch_or_infinity(), subvolumes);
- if (r < 0)
- return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d);
- }
-
- return 0;
-}
-
-static int do_make_symlinks(Partition *p, const char *root) {
- int r;
-
- assert(p);
- assert(root);
-
- STRV_FOREACH_PAIR(path, target, p->make_symlinks) {
- _cleanup_close_ int parent_fd = -EBADF;
- _cleanup_free_ char *f = NULL;
-
- r = chase(*path, root, CHASE_PREFIX_ROOT|CHASE_PARENT|CHASE_EXTRACT_FILENAME, &f, &parent_fd);
- if (r < 0)
- return log_error_errno(r, "Failed to resolve %s in %s", *path, root);
-
- if (symlinkat(*target, parent_fd, f) < 0)
- return log_error_errno(errno, "Failed to create symlink at %s to %s: %m", *path, *target);
- }
-
- return 0;
-}
-
-static int make_subvolumes_read_only(Partition *p, const char *root) {
- _cleanup_free_ char *path = NULL;
- Subvolume *subvolume;
- int r;
-
- ORDERED_HASHMAP_FOREACH(subvolume, p->subvolumes) {
- if (!FLAGS_SET(subvolume->flags, SUBVOLUME_RO))
- continue;
-
- path = path_join(root, subvolume->path);
- if (!path)
- return log_oom();
-
- r = btrfs_subvol_set_read_only(path, true);
- if (r < 0)
- return log_error_errno(r, "Failed to make subvolume '%s' read-only: %m", subvolume->path);
- }
-
- if (p->suppressing) {
- r = make_subvolumes_read_only(p->suppressing, root);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int set_default_subvolume(Partition *p, const char *root) {
- _cleanup_free_ char *path = NULL;
- int r;
-
- assert(p);
- assert(root);
-
- if (!p->default_subvolume)
- return 0;
-
- path = path_join(root, p->default_subvolume);
- if (!path)
- return log_oom();
-
- r = btrfs_subvol_make_default(path);
- if (r < 0)
- return log_error_errno(r, "Failed to make '%s' the default subvolume: %m", p->default_subvolume);
-
- return 0;
-}
-
-static int partition_populate_directory(Context *context, Partition *p, char **ret) {
- _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
- const char *vt;
- int r;
-
- assert(ret);
-
- log_info("Preparing to populate %s filesystem.", p->format);
-
- r = var_tmp_dir(&vt);
- if (r < 0)
- return log_error_errno(r, "Could not determine temporary directory: %m");
-
- r = tempfn_random_child(vt, "repart", &root);
- if (r < 0)
- return log_error_errno(r, "Failed to generate temporary directory: %m");
-
- r = mkdir(root, 0755);
- if (r < 0)
- return log_error_errno(errno, "Failed to create temporary directory: %m");
-
- r = do_copy_files(context, p, root);
- if (r < 0)
- return r;
-
- r = do_make_directories(p, root);
- if (r < 0)
- return r;
-
- r = do_make_symlinks(p, root);
- if (r < 0)
- return r;
-
- log_info("Ready to populate %s filesystem.", p->format);
-
- *ret = TAKE_PTR(root);
- return 0;
-}
-
-static int partition_populate_filesystem(Context *context, Partition *p, const char *node) {
- int r;
-
- assert(p);
- assert(node);
-
- log_info("Populating %s filesystem.", p->format);
-
- /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to
- * appear in the host namespace. Hence we fork a child that has its own file system namespace and
- * detached mount propagation. */
-
- r = safe_fork("(sd-copy)", FORK_DEATHSIG_SIGTERM|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL);
- if (r < 0)
- return r;
- if (r == 0) {
- static const char fs[] = "/run/systemd/mount-root";
- /* This is a child process with its own mount namespace and propagation to host turned off */
-
- r = mkdir_p(fs, 0700);
- if (r < 0) {
- log_error_errno(r, "Failed to create mount point: %m");
- _exit(EXIT_FAILURE);
- }
-
- if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0)
- _exit(EXIT_FAILURE);
-
- if (do_copy_files(context, p, fs) < 0)
- _exit(EXIT_FAILURE);
-
- if (do_make_directories(p, fs) < 0)
- _exit(EXIT_FAILURE);
-
- if (do_make_symlinks(p, fs) < 0)
- _exit(EXIT_FAILURE);
-
- if (make_subvolumes_read_only(p, fs) < 0)
- _exit(EXIT_FAILURE);
-
- if (set_default_subvolume(p, fs) < 0)
- _exit(EXIT_FAILURE);
-
- r = syncfs_path(AT_FDCWD, fs);
- if (r < 0) {
- log_error_errno(r, "Failed to synchronize written files: %m");
- _exit(EXIT_FAILURE);
- }
-
- _exit(EXIT_SUCCESS);
- }
-
- log_info("Successfully populated %s filesystem.", p->format);
- return 0;
-}
-
-static int finalize_extra_mkfs_options(const Partition *p, const char *root, char ***ret) {
- _cleanup_strv_free_ char **sv = NULL;
- int r;
-
- assert(p);
- assert(ret);
-
- r = mkfs_options_from_env("REPART", p->format, &sv);
- if (r < 0)
- return log_error_errno(r,
- "Failed to determine mkfs command line options for '%s': %m",
- p->format);
-
- *ret = TAKE_PTR(sv);
- return 0;
-}
-
-static int context_mkfs(Context *context) {
- int r;
-
- assert(context);
-
- /* Make a file system */
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
- _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
- _cleanup_strv_free_ char **extra_mkfs_options = NULL;
-
- if (p->dropped)
- continue;
-
- if (PARTITION_EXISTS(p)) /* Never format existing partitions */
- continue;
-
- if (!p->format)
- continue;
-
- /* Minimized partitions will use the copy blocks logic so skip those here. */
- if (p->copy_blocks_fd >= 0)
- continue;
-
- if (partition_type_defer(&p->type))
- continue;
-
- assert(p->offset != UINT64_MAX);
- assert(p->new_size != UINT64_MAX);
- assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0));
-
- /* If we're doing encryption, keep free space at the end which is required
- * for cryptsetup's offline encryption. */
- r = partition_target_prepare(context, p,
- p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0),
- /*need_path=*/ true,
- &t);
- if (r < 0)
- return r;
-
- if (p->encrypt != ENCRYPT_OFF && t->loop) {
- r = partition_target_grow(t, p->new_size);
- if (r < 0)
- return r;
-
- r = partition_encrypt(context, p, t, /* offline = */ false);
- if (r < 0)
- return log_error_errno(r, "Failed to encrypt device: %m");
- }
-
- log_info("Formatting future partition %" PRIu64 ".", p->partno);
-
- /* If we're not writing to a loop device or if we're populating a read-only filesystem, we
- * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that,
- * we need to set up the final directory tree beforehand. */
-
- if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) {
- if (!mkfs_supports_root_option(p->format))
- return log_error_errno(SYNTHETIC_ERRNO(ENODEV),
- "Loop device access is required to populate %s filesystems.",
- p->format);
-
- r = partition_populate_directory(context, p, &root);
- if (r < 0)
- return r;
- }
-
- r = finalize_extra_mkfs_options(p, root, &extra_mkfs_options);
- if (r < 0)
- return r;
-
- r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root,
- p->fs_uuid, arg_discard, /* quiet = */ false,
- context->fs_sector_size, p->compression, p->compression_level,
- extra_mkfs_options);
- if (r < 0)
- return r;
-
- /* The mkfs binary we invoked might have removed our temporary file when we're not operating
- * on a loop device, so open the file again to make sure our file descriptor points to actual
- * new file. */
-
- if (t->fd >= 0 && t->path && !t->loop) {
- safe_close(t->fd);
- t->fd = open(t->path, O_RDWR|O_CLOEXEC);
- if (t->fd < 0)
- return log_error_errno(errno, "Failed to reopen temporary file: %m");
- }
-
- log_info("Successfully formatted future partition %" PRIu64 ".", p->partno);
-
- /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */
- if (partition_needs_populate(p) && !root) {
- assert(t->loop);
-
- r = partition_populate_filesystem(context, p, partition_target_path(t));
- if (r < 0)
- return r;
- }
-
- if (p->encrypt != ENCRYPT_OFF && !t->loop) {
- r = partition_target_grow(t, p->new_size);
- if (r < 0)
- return r;
-
- r = partition_encrypt(context, p, t, /* offline = */ true);
- if (r < 0)
- return log_error_errno(r, "Failed to encrypt device: %m");
- }
-
- /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and
- * if we don't sync before detaching a block device the in-flight sectors possibly won't hit
- * the disk. */
-
- r = partition_target_sync(context, p, t);
- if (r < 0)
- return r;
-
- if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) {
- r = partition_format_verity_hash(context, p->siblings[VERITY_HASH],
- /* node = */ NULL, partition_target_path(t));
- if (r < 0)
- return r;
- }
-
- if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) {
- r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]);
- if (r < 0)
- return r;
- }
- }
-
- return 0;
-}
-
-static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) {
- struct {
- sd_id128_t type_uuid;
- uint64_t counter;
- } _packed_ plaintext = {};
- union {
- uint8_t md[SHA256_DIGEST_SIZE];
- sd_id128_t id;
- } result;
-
- uint64_t k = 0;
- int r;
-
- assert(context);
- assert(p);
- assert(ret);
-
- /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility,
- * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely:
- * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the
- * installation we are processing, but if random behaviour is desired can be random, too. We use the
- * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak)
- * and the partition type as plaintext. The partition type is suffixed with a counter (only for the
- * second and later partition of the same type) if we have more than one partition of the same
- * time. Or in other words:
- *
- * With:
- * SEED := /etc/machine-id
- *
- * If first partition instance of type TYPE_UUID:
- * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID)
- *
- * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number:
- * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE)
- */
-
- LIST_FOREACH(partitions, q, context->partitions) {
- if (p == q)
- break;
-
- if (!sd_id128_equal(p->type.uuid, q->type.uuid))
- continue;
-
- k++;
- }
-
- plaintext.type_uuid = p->type.uuid;
- plaintext.counter = htole64(k);
-
- hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes),
- &plaintext,
- k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext),
- result.md);
-
- /* Take the first half, mark it as v4 UUID */
- assert_cc(sizeof(result.md) == sizeof(result.id) * 2);
- result.id = id128_make_v4_uuid(result.id);
-
- /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */
- LIST_FOREACH(partitions, q, context->partitions) {
- if (p == q)
- continue;
-
- if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) {
- log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno);
-
- r = sd_id128_randomize(&result.id);
- if (r < 0)
- return log_error_errno(r, "Failed to generate randomized UUID: %m");
-
- break;
- }
- }
-
- *ret = result.id;
- return 0;
-}
-
-static int partition_acquire_label(Context *context, Partition *p, char **ret) {
- _cleanup_free_ char *label = NULL;
- const char *prefix;
- unsigned k = 1;
-
- assert(context);
- assert(p);
- assert(ret);
-
- prefix = gpt_partition_type_uuid_to_string(p->type.uuid);
- if (!prefix)
- prefix = "linux";
-
- for (;;) {
- const char *ll = label ?: prefix;
- bool retry = false;
-
- LIST_FOREACH(partitions, q, context->partitions) {
- if (p == q)
- break;
-
- if (streq_ptr(ll, q->current_label) ||
- streq_ptr(ll, q->new_label)) {
- retry = true;
- break;
- }
- }
-
- if (!retry)
- break;
-
- label = mfree(label);
- if (asprintf(&label, "%s-%u", prefix, ++k) < 0)
- return log_oom();
- }
-
- if (!label) {
- label = strdup(prefix);
- if (!label)
- return log_oom();
- }
-
- *ret = TAKE_PTR(label);
- return 0;
-}
-
-static int context_acquire_partition_uuids_and_labels(Context *context) {
- int r;
-
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- sd_id128_t uuid;
-
- /* Never touch foreign partitions */
- if (PARTITION_IS_FOREIGN(p)) {
- p->new_uuid = p->current_uuid;
-
- if (p->current_label) {
- r = free_and_strdup_warn(&p->new_label, strempty(p->current_label));
- if (r < 0)
- return r;
- }
-
- continue;
- }
-
- if (!sd_id128_is_null(p->current_uuid))
- p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */
- else if (p->new_uuid_is_set)
- uuid = p->new_uuid;
- else {
- /* Not explicitly set by user! */
- r = partition_acquire_uuid(context, p, &uuid);
- if (r < 0)
- return r;
-
- /* The final verity hash/data UUIDs can only be determined after formatting the
- * verity hash partition. However, we still want to use the generated partition UUID
- * to derive other UUIDs to keep things unique and reproducible, so we always
- * generate a UUID if none is set, but we only use it as the actual partition UUID if
- * verity is not configured. */
- if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) {
- p->new_uuid = uuid;
- p->new_uuid_is_set = true;
- }
- }
-
- /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid",
- * keyed off the partition UUID. */
- r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid);
- if (r < 0)
- return r;
-
- if (p->encrypt != ENCRYPT_OFF) {
- r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid);
- if (r < 0)
- return r;
- }
-
- /* Derive the verity salt and verity superblock UUID from the seed to keep them reproducible */
- if (p->verity == VERITY_HASH) {
- derive_salt(context->seed, "verity-salt", p->verity_salt);
-
- r = derive_uuid(context->seed, "verity-uuid", &p->verity_uuid);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire verity uuid: %m");
- }
-
- if (!isempty(p->current_label)) {
- /* never change initialized labels */
- r = free_and_strdup_warn(&p->new_label, p->current_label);
- if (r < 0)
- return r;
- } else if (!p->new_label) {
- /* Not explicitly set by user! */
-
- r = partition_acquire_label(context, p, &p->new_label);
- if (r < 0)
- return r;
- }
- }
-
- return 0;
-}
-
-static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) {
- _cleanup_free_ char *a = NULL;
-
- for (unsigned i = 0; i < sizeof(flags) * 8; i++) {
- uint64_t bit = UINT64_C(1) << i;
- char buf[DECIMAL_STR_MAX(unsigned)+1];
-
- if (!FLAGS_SET(flags, bit))
- continue;
-
- xsprintf(buf, "%u", i);
- if (!strextend_with_separator(&a, ",", buf))
- return -ENOMEM;
- }
-
- return fdisk_partition_set_attrs(q, a);
-}
-
-static uint64_t partition_merge_flags(Partition *p) {
- uint64_t f;
-
- assert(p);
-
- f = p->gpt_flags;
-
- if (p->no_auto >= 0) {
- if (gpt_partition_type_knows_no_auto(p->type))
- SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto);
- else {
- char buffer[SD_ID128_UUID_STRING_MAX];
- log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.",
- yes_no(p->no_auto),
- gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
- }
- }
-
- if (p->read_only >= 0) {
- if (gpt_partition_type_knows_read_only(p->type))
- SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only);
- else {
- char buffer[SD_ID128_UUID_STRING_MAX];
- log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.",
- yes_no(p->read_only),
- gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
- }
- }
-
- if (p->growfs >= 0) {
- if (gpt_partition_type_knows_growfs(p->type))
- SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs);
- else {
- char buffer[SD_ID128_UUID_STRING_MAX];
- log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.",
- yes_no(p->growfs),
- gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
- }
- }
-
- return f;
-}
-
-static int context_mangle_partitions(Context *context) {
- int r;
-
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (p->dropped)
- continue;
-
- if (partition_type_defer(&p->type))
- continue;
-
- assert(p->new_size != UINT64_MAX);
- assert(p->offset != UINT64_MAX);
- assert(p->partno != UINT64_MAX);
-
- if (PARTITION_EXISTS(p)) {
- bool changed = false;
-
- assert(p->current_partition);
-
- if (p->new_size != p->current_size) {
- assert(p->new_size >= p->current_size);
- assert(p->new_size % context->sector_size == 0);
-
- r = fdisk_partition_size_explicit(p->current_partition, true);
- if (r < 0)
- return log_error_errno(r, "Failed to enable explicit sizing: %m");
-
- r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size);
- if (r < 0)
- return log_error_errno(r, "Failed to grow partition: %m");
-
- log_info("Growing existing partition %" PRIu64 ".", p->partno);
- changed = true;
- }
-
- if (!sd_id128_equal(p->new_uuid, p->current_uuid)) {
- r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid));
- if (r < 0)
- return log_error_errno(r, "Failed to set partition UUID: %m");
-
- log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno);
- changed = true;
- }
-
- if (!streq_ptr(p->new_label, p->current_label)) {
- r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label));
- if (r < 0)
- return log_error_errno(r, "Failed to set partition label: %m");
-
- log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno);
- changed = true;
- }
-
- if (changed) {
- assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */
-
- r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition);
- if (r < 0)
- return log_error_errno(r, "Failed to update partition: %m");
- }
- } else {
- _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL;
- _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL;
-
- assert(!p->new_partition);
- assert(p->offset % context->sector_size == 0);
- assert(p->new_size % context->sector_size == 0);
- assert(p->new_label);
-
- t = fdisk_new_parttype();
- if (!t)
- return log_oom();
-
- r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid));
- if (r < 0)
- return log_error_errno(r, "Failed to initialize partition type: %m");
-
- q = fdisk_new_partition();
- if (!q)
- return log_oom();
-
- r = fdisk_partition_set_type(q, t);
- if (r < 0)
- return log_error_errno(r, "Failed to set partition type: %m");
-
- r = fdisk_partition_size_explicit(q, true);
- if (r < 0)
- return log_error_errno(r, "Failed to enable explicit sizing: %m");
-
- r = fdisk_partition_set_start(q, p->offset / context->sector_size);
- if (r < 0)
- return log_error_errno(r, "Failed to position partition: %m");
-
- r = fdisk_partition_set_size(q, p->new_size / context->sector_size);
- if (r < 0)
- return log_error_errno(r, "Failed to grow partition: %m");
-
- r = fdisk_partition_set_partno(q, p->partno);
- if (r < 0)
- return log_error_errno(r, "Failed to set partition number: %m");
-
- r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid));
- if (r < 0)
- return log_error_errno(r, "Failed to set partition UUID: %m");
-
- r = fdisk_partition_set_name(q, strempty(p->new_label));
- if (r < 0)
- return log_error_errno(r, "Failed to set partition label: %m");
-
- /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */
- r = set_gpt_flags(q, partition_merge_flags(p));
- if (r < 0)
- return log_error_errno(r, "Failed to set GPT partition flags: %m");
-
- log_info("Adding new partition %" PRIu64 " to partition table.", p->partno);
-
- r = fdisk_add_partition(context->fdisk_context, q, NULL);
- if (r < 0)
- return log_error_errno(r, "Failed to add partition: %m");
-
- assert(!p->new_partition);
- p->new_partition = TAKE_PTR(q);
- }
- }
-
- return 0;
-}
-
-static int split_name_printf(Partition *p, char **ret) {
- assert(p);
-
- const Specifier table[] = {
- { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) },
- { 'T', specifier_id128, &p->type.uuid },
- { 'U', specifier_id128, &p->new_uuid },
- { 'n', specifier_uint64, &p->partno },
-
- COMMON_SYSTEM_SPECIFIERS,
- {}
- };
-
- return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret);
-}
-
-static int split_node(const char *node, char **ret_base, char **ret_ext) {
- _cleanup_free_ char *base = NULL, *ext = NULL;
- char *e;
- int r;
-
- assert(node);
- assert(ret_base);
- assert(ret_ext);
-
- r = path_extract_filename(node, &base);
- if (r == O_DIRECTORY || r == -EADDRNOTAVAIL)
- return log_error_errno(r, "Device node %s cannot be a directory", node);
- if (r < 0)
- return log_error_errno(r, "Failed to extract filename from %s: %m", node);
-
- e = endswith(base, ".raw");
- if (e) {
- ext = strdup(e);
- if (!ext)
- return log_oom();
-
- *e = 0;
- }
-
- *ret_base = TAKE_PTR(base);
- *ret_ext = TAKE_PTR(ext);
-
- return 0;
-}
-
-static int split_name_resolve(Context *context) {
- _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL;
- int r;
-
- assert(context);
-
- r = path_extract_directory(context->node, &parent);
- if (r < 0 && r != -EDESTADDRREQ)
- return log_error_errno(r, "Failed to extract directory from %s: %m", context->node);
-
- r = split_node(context->node, &base, &ext);
- if (r < 0)
- return r;
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *resolved = NULL;
-
- if (p->dropped)
- continue;
-
- if (!p->split_name_format)
- continue;
-
- r = split_name_printf(p, &resolved);
- if (r < 0)
- return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format);
-
- if (parent)
- p->split_path = strjoin(parent, "/", base, ".", resolved, ext);
- else
- p->split_path = strjoin(base, ".", resolved, ext);
- if (!p->split_path)
- return log_oom();
- }
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (!p->split_path)
- continue;
-
- LIST_FOREACH(partitions, q, context->partitions) {
- if (p == q)
- continue;
-
- if (!q->split_path)
- continue;
-
- if (!streq(p->split_path, q->split_path))
- continue;
-
- return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ),
- "%s and %s have the same resolved split name \"%s\", refusing.",
- p->definition_path, q->definition_path, p->split_path);
- }
- }
-
- return 0;
-}
-
-static int context_split(Context *context) {
- unsigned attrs = 0;
- int fd = -EBADF, r;
-
- if (!arg_split)
- return 0;
-
- assert(context);
-
- /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled
- * in after they've been generated. */
-
- r = split_name_resolve(context);
- if (r < 0)
- return r;
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_close_ int fdt = -EBADF;
-
- if (p->dropped)
- continue;
-
- if (!p->split_path)
- continue;
-
- if (partition_type_defer(&p->type))
- continue;
-
- if (fd < 0) {
- assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
-
- r = read_attr_fd(fd, &attrs);
- if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
- return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
- }
-
- fdt = xopenat_full(
- AT_FDCWD,
- p->split_path,
- O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL,
- attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
- 0666);
- if (fdt < 0)
- return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path);
-
- if (lseek(fd, p->offset, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to seek to partition offset: %m");
-
- r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES|COPY_TRUNCATE);
- if (r < 0)
- return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path);
- }
-
- return 0;
-}
-
-static int context_write_partition_table(Context *context) {
- _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL;
- int capable, r;
-
- assert(context);
-
- if (!context->from_scratch && !context_changed(context)) {
- log_info("No changes.");
- return 0;
- }
-
- if (arg_dry_run) {
- log_notice("Refusing to repartition, please re-run with --dry-run=no.");
- return 0;
- }
-
- log_info("Applying changes to %s.", context->node);
-
- if (context->from_scratch && arg_empty != EMPTY_CREATE) {
- /* Erase everything if we operate from scratch, except if the image was just created anyway, and thus is definitely empty. */
- r = context_wipe_range(context, 0, context->total);
- if (r < 0)
- return r;
-
- log_info("Wiped block device.");
-
- if (arg_discard) {
- r = context_discard_range(context, 0, context->total);
- if (r == -EOPNOTSUPP)
- log_info("Storage does not support discard, not discarding entire block device data.");
- else if (r < 0)
- return log_error_errno(r, "Failed to discard entire block device: %m");
- else if (r > 0)
- log_info("Discarded entire block device.");
- }
- }
-
- r = fdisk_get_partitions(context->fdisk_context, &original_table);
- if (r < 0)
- return log_error_errno(r, "Failed to acquire partition table: %m");
-
- /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the
- * gaps between partitions, just to be sure. */
- r = context_wipe_and_discard(context);
- if (r < 0)
- return r;
-
- r = context_copy_blocks(context);
- if (r < 0)
- return r;
-
- r = context_mkfs(context);
- if (r < 0)
- return r;
-
- r = context_mangle_partitions(context);
- if (r < 0)
- return r;
-
- log_info("Writing new partition table.");
-
- r = fdisk_write_disklabel(context->fdisk_context);
- if (r < 0)
- return log_error_errno(r, "Failed to write partition table: %m");
-
- capable = blockdev_partscan_enabled_fd(fdisk_get_devfd(context->fdisk_context));
- if (capable == -ENOTBLK)
- log_debug("Not telling kernel to reread partition table, since we are not operating on a block device.");
- else if (capable < 0)
- return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m");
- else if (capable > 0) {
- log_info("Telling kernel to reread partition table.");
-
- if (context->from_scratch)
- r = fdisk_reread_partition_table(context->fdisk_context);
- else
- r = fdisk_reread_changes(context->fdisk_context, original_table);
- if (r < 0)
- return log_error_errno(r, "Failed to reread partition table: %m");
- } else
- log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices.");
-
- log_info("All done.");
-
- return 0;
-}
-
-static int context_read_seed(Context *context, const char *root) {
- int r;
-
- assert(context);
-
- if (!sd_id128_is_null(context->seed))
- return 0;
-
- if (!arg_randomize) {
- r = id128_get_machine(root, &context->seed);
- if (r >= 0)
- return 0;
-
- if (!ERRNO_IS_MACHINE_ID_UNSET(r))
- return log_error_errno(r, "Failed to parse machine ID of image: %m");
-
- log_info("No machine ID set, using randomized partition UUIDs.");
- }
-
- r = sd_id128_randomize(&context->seed);
- if (r < 0)
- return log_error_errno(r, "Failed to generate randomized seed: %m");
-
- return 0;
-}
-
-static int context_factory_reset(Context *context) {
- size_t n = 0;
- int r;
-
- assert(context);
-
- if (arg_factory_reset <= 0)
- return 0;
-
- if (context->from_scratch) /* Nothing to reset if we start from scratch */
- return 0;
-
- if (arg_dry_run) {
- log_notice("Refusing to factory reset, please re-run with --dry-run=no.");
- return 0;
- }
-
- log_info("Applying factory reset.");
-
- LIST_FOREACH(partitions, p, context->partitions) {
-
- if (!p->factory_reset || !PARTITION_EXISTS(p))
- continue;
-
- assert(p->partno != UINT64_MAX);
-
- log_info("Removing partition %" PRIu64 " for factory reset.", p->partno);
-
- r = fdisk_delete_partition(context->fdisk_context, p->partno);
- if (r < 0)
- return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno);
-
- n++;
- }
-
- if (n == 0) {
- log_info("Factory reset requested, but no partitions to delete found.");
- return 0;
- }
-
- r = fdisk_write_disklabel(context->fdisk_context);
- if (r < 0)
- return log_error_errno(r, "Failed to write disk label: %m");
-
- log_info("Successfully deleted %zu partitions.", n);
- return 1;
-}
-
-static int context_can_factory_reset(Context *context) {
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions)
- if (p->factory_reset && PARTITION_EXISTS(p))
- return true;
-
- return false;
-}
-
-static int resolve_copy_blocks_auto_candidate(
- dev_t partition_devno,
- GptPartitionType partition_type,
- dev_t restrict_devno,
- sd_id128_t *ret_uuid) {
-
- _cleanup_(blkid_free_probep) blkid_probe b = NULL;
- _cleanup_close_ int fd = -EBADF;
- _cleanup_free_ char *p = NULL;
- const char *pttype, *t;
- sd_id128_t pt_parsed, u;
- blkid_partition pp;
- dev_t whole_devno;
- blkid_partlist pl;
- int r;
-
- /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified
- * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is
- * backed by two separate partitions: the data and the hash partitions, and we need to find the right
- * one of the two. */
-
- r = block_get_whole_disk(partition_devno, &whole_devno);
- if (r < 0)
- return log_error_errno(
- r,
- "Unable to determine containing block device of partition %u:%u: %m",
- major(partition_devno), minor(partition_devno));
-
- if (restrict_devno != (dev_t) -1 &&
- restrict_devno != whole_devno)
- return log_error_errno(
- SYNTHETIC_ERRNO(EPERM),
- "Partition %u:%u is located outside of block device %u:%u, refusing.",
- major(partition_devno), minor(partition_devno),
- major(restrict_devno), minor(restrict_devno));
-
- fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p);
- if (r < 0)
- return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m",
- DEVNUM_FORMAT_VAL(whole_devno));
-
- b = blkid_new_probe();
- if (!b)
- return log_oom();
-
- errno = 0;
- r = blkid_probe_set_device(b, fd, 0, 0);
- if (r != 0)
- return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p);
-
- (void) blkid_probe_enable_partitions(b, 1);
- (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
-
- errno = 0;
- r = blkid_do_safeprobe(b);
- if (r == _BLKID_SAFEPROBE_ERROR)
- return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p);
- if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) {
- log_debug("Didn't find partition table on block device '%s'.", p);
- return false;
- }
-
- assert(r == _BLKID_SAFEPROBE_FOUND);
-
- (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL);
- if (!streq_ptr(pttype, "gpt")) {
- log_debug("Didn't find a GPT partition table on '%s'.", p);
- return false;
- }
-
- errno = 0;
- pl = blkid_probe_get_partitions(b);
- if (!pl)
- return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p);
-
- pp = blkid_partlist_devno_to_partition(pl, partition_devno);
- if (!pp) {
- log_debug("Partition %u:%u has no matching partition table entry on '%s'.",
- major(partition_devno), minor(partition_devno), p);
- return false;
- }
-
- t = blkid_partition_get_type_string(pp);
- if (isempty(t)) {
- log_debug("Partition %u:%u has no type on '%s'.",
- major(partition_devno), minor(partition_devno), p);
- return false;
- }
-
- r = sd_id128_from_string(t, &pt_parsed);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t);
- return false;
- }
-
- if (!sd_id128_equal(pt_parsed, partition_type.uuid)) {
- log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.",
- major(partition_devno), minor(partition_devno),
- SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid));
- return false;
- }
-
- r = blkid_partition_get_uuid_id128(pp, &u);
- if (r == -ENXIO) {
- log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno));
- return false;
- }
- if (r < 0) {
- log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno));
- return false;
- }
-
- log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".",
- DEVNUM_FORMAT_VAL(partition_devno),
- SD_ID128_FORMAT_VAL(pt_parsed));
-
- if (ret_uuid)
- *ret_uuid = u;
-
- return true;
-}
-
-static int find_backing_devno(
- const char *path,
- const char *root,
- dev_t *ret) {
-
- _cleanup_free_ char *resolved = NULL;
- int r;
-
- assert(path);
-
- r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL);
- if (r < 0)
- return r;
-
- r = path_is_mount_point(resolved);
- if (r < 0)
- return r;
- if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */
- return -ENOENT;
-
- r = get_block_device(resolved, ret);
- if (r < 0)
- return r;
- if (r == 0) /* Not backed by physical file system, we can't use this */
- return -ENOENT;
-
- return 0;
-}
-
-static int resolve_copy_blocks_auto(
- GptPartitionType type,
- const char *root,
- dev_t restrict_devno,
- dev_t *ret_devno,
- sd_id128_t *ret_uuid) {
-
- const char *try1 = NULL, *try2 = NULL;
- char p[SYS_BLOCK_PATH_MAX("/slaves")];
- _cleanup_closedir_ DIR *d = NULL;
- sd_id128_t found_uuid = SD_ID128_NULL;
- dev_t devno, found = 0;
- int r;
-
- /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the
- * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all,
- * and restrict block device references in the --image= case to loopback block device we set up.
- *
- * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and
- * thus declares which device (and its partition subdevices) we shall limit access to. If
- * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if
- * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */
-
- if (restrict_devno == 0)
- return log_error_errno(SYNTHETIC_ERRNO(EPERM),
- "Automatic discovery of backing block devices not permitted in --root= mode, refusing.");
-
- /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching
- * partitions in the host, using the appropriate directory as key and ensuring that the partition
- * type matches. */
-
- if (type.designator == PARTITION_ROOT)
- try1 = "/";
- else if (type.designator == PARTITION_USR)
- try1 = "/usr/";
- else if (type.designator == PARTITION_ROOT_VERITY)
- try1 = "/";
- else if (type.designator == PARTITION_USR_VERITY)
- try1 = "/usr/";
- else if (type.designator == PARTITION_ESP) {
- try1 = "/efi/";
- try2 = "/boot/";
- } else if (type.designator == PARTITION_XBOOTLDR)
- try1 = "/boot/";
- else
- return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
- "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.",
- SD_ID128_FORMAT_VAL(type.uuid));
-
- r = find_backing_devno(try1, root, &devno);
- if (r == -ENOENT && try2)
- r = find_backing_devno(try2, root, &devno);
- if (r < 0)
- return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m",
- SD_ID128_FORMAT_VAL(type.uuid));
-
- xsprintf_sys_block_path(p, "/slaves", devno);
- d = opendir(p);
- if (d) {
- struct dirent *de;
-
- for (;;) {
- _cleanup_free_ char *q = NULL, *t = NULL;
- sd_id128_t u;
- dev_t sl;
-
- errno = 0;
- de = readdir_no_dot(d);
- if (!de) {
- if (errno != 0)
- return log_error_errno(errno, "Failed to read directory '%s': %m", p);
-
- break;
- }
-
- if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN))
- continue;
-
- q = path_join(p, de->d_name, "/dev");
- if (!q)
- return log_oom();
-
- r = read_one_line_file(q, &t);
- if (r < 0)
- return log_error_errno(r, "Failed to read %s: %m", q);
-
- r = parse_devnum(t, &sl);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse %s, ignoring: %m", q);
- continue;
- }
- if (major(sl) == 0) {
- log_debug("Device backing %s is special, ignoring.", q);
- continue;
- }
-
- r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u);
- if (r < 0)
- return r;
- if (r > 0) {
- /* We found a matching one! */
- if (found != 0)
- return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ),
- "Multiple matching partitions found, refusing.");
-
- found = sl;
- found_uuid = u;
- }
- }
- } else if (errno != ENOENT)
- return log_error_errno(errno, "Failed open %s: %m", p);
- else {
- r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid);
- if (r < 0)
- return r;
- if (r > 0)
- found = devno;
- }
-
- if (found == 0)
- return log_error_errno(SYNTHETIC_ERRNO(ENXIO),
- "Unable to automatically discover suitable partition to copy blocks from.");
-
- if (ret_devno)
- *ret_devno = found;
-
- if (ret_uuid)
- *ret_uuid = found_uuid;
-
- return 0;
-}
-
-static int context_open_copy_block_paths(
- Context *context,
- dev_t restrict_devno) {
-
- int r;
-
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_close_ int source_fd = -EBADF;
- _cleanup_free_ char *opened = NULL;
- sd_id128_t uuid = SD_ID128_NULL;
- uint64_t size;
- struct stat st;
-
- if (p->copy_blocks_fd >= 0)
- continue;
-
- assert(p->copy_blocks_size == UINT64_MAX);
-
- if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */
- continue;
-
- if (p->copy_blocks_path) {
-
- source_fd = chase_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened);
- if (source_fd < 0)
- return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path);
-
- if (fstat(source_fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened);
-
- if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1)
- return log_error_errno(SYNTHETIC_ERRNO(EPERM),
- "Copying from block device node is not permitted in --image=/--root= mode, refusing.");
-
- } else if (p->copy_blocks_auto) {
- dev_t devno = 0; /* Fake initialization to appease gcc. */
-
- r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid);
- if (r < 0)
- return r;
- assert(devno != 0);
-
- source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened);
- if (r < 0)
- return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m",
- DEVNUM_FORMAT_VAL(devno));
-
- if (fstat(source_fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened);
- } else
- continue;
-
- if (S_ISDIR(st.st_mode)) {
- _cleanup_free_ char *bdev = NULL;
- dev_t devt;
-
- /* If the file is a directory, automatically find the backing block device */
-
- if (major(st.st_dev) != 0)
- devt = st.st_dev;
- else {
- /* Special support for btrfs */
- r = btrfs_get_block_device_fd(source_fd, &devt);
- if (r == -EUCLEAN)
- return btrfs_log_dev_root(LOG_ERR, r, opened);
- if (r < 0)
- return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened);
- }
-
- safe_close(source_fd);
-
- source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev);
- if (r < 0)
- return log_error_errno(r, "Failed to open block device backing '%s': %m", opened);
-
- if (fstat(source_fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev);
- }
-
- if (S_ISREG(st.st_mode))
- size = st.st_size;
- else if (S_ISBLK(st.st_mode)) {
- r = blockdev_get_device_size(source_fd, &size);
- if (r < 0)
- return log_error_errno(r, "Failed to determine size of block device to copy from: %m");
- } else if (S_ISCHR(st.st_mode))
- size = UINT64_MAX;
- else
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified path to copy blocks from '%s' is not a regular file, block device or directory, refusing.", opened);
-
- if (size != UINT64_MAX) {
- if (size <= 0)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened);
- if (size % 512 != 0)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has size that is not multiple of 512, refusing.", opened);
- }
-
- p->copy_blocks_fd = TAKE_FD(source_fd);
- p->copy_blocks_size = size;
-
- free_and_replace(p->copy_blocks_path, opened);
-
- /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */
- if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) {
- p->new_uuid = uuid;
- p->new_uuid_is_set = true;
- }
- }
-
- return 0;
-}
-
-static int fd_apparent_size(int fd, uint64_t *ret) {
- off_t initial = 0;
- uint64_t size = 0;
-
- assert(fd >= 0);
- assert(ret);
-
- initial = lseek(fd, 0, SEEK_CUR);
- if (initial < 0)
- return log_error_errno(errno, "Failed to get file offset: %m");
-
- for (off_t off = 0;;) {
- off_t r;
-
- r = lseek(fd, off, SEEK_DATA);
- if (r < 0 && errno == ENXIO)
- /* If errno == ENXIO, that means we've reached the final hole of the file and
- * that hole isn't followed by more data. */
- break;
- if (r < 0)
- return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off);
-
- off = r; /* Set the offset to the start of the data segment. */
-
- /* After copying a potential hole, find the end of the data segment by looking for
- * the next hole. If we get ENXIO, we're at EOF. */
- r = lseek(fd, off, SEEK_HOLE);
- if (r < 0) {
- if (errno == ENXIO)
- break;
- return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off);
- }
-
- size += r - off;
- off = r;
- }
-
- if (lseek(fd, initial, SEEK_SET) < 0)
- return log_error_errno(errno, "Failed to reset file offset: %m");
-
- *ret = size;
-
- return 0;
-}
-
-static bool need_fstab_one(const Partition *p) {
- assert(p);
-
- if (p->dropped)
- return false;
-
- if (!p->format)
- return false;
-
- if (p->n_mountpoints == 0)
- return false;
-
- return true;
-}
-
-static bool need_fstab(const Context *context) {
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions)
- if (need_fstab_one(p))
- return true;
-
- return false;
-}
-
-static int context_fstab(Context *context) {
- _cleanup_(unlink_and_freep) char *t = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- _cleanup_free_ char *path = NULL;
- int r;
-
- assert(context);
-
- if (!arg_generate_fstab)
- return false;
-
- if (!need_fstab(context)) {
- log_notice("MountPoint= is not specified for any eligible partitions, not generating %s",
- arg_generate_fstab);
- return 0;
- }
-
- path = path_join(arg_copy_source, arg_generate_fstab);
- if (!path)
- return log_oom();
-
- r = fopen_tmpfile_linkable(path, O_WRONLY|O_CLOEXEC, &t, &f);
- if (r < 0)
- return log_error_errno(r, "Failed to open temporary file for %s: %m", path);
-
- fprintf(f, "# Automatically generated by systemd-repart\n\n");
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *what = NULL, *options = NULL;
-
- if (!need_fstab_one(p))
- continue;
-
- what = strjoin("UUID=", SD_ID128_TO_UUID_STRING(p->fs_uuid));
- if (!what)
- return log_oom();
-
- FOREACH_ARRAY(mountpoint, p->mountpoints, p->n_mountpoints) {
- r = partition_pick_mount_options(
- p->type.designator,
- p->format,
- /* rw= */ true,
- /* discard= */ !IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR),
- &options,
- NULL);
- if (r < 0)
- return r;
-
- if (!strextend_with_separator(&options, ",", mountpoint->options))
- return log_oom();
-
- fprintf(f, "%s %s %s %s 0 %i\n",
- what,
- mountpoint->where,
- p->format,
- options,
- p->type.designator == PARTITION_ROOT ? 1 : 2);
- }
- }
-
- r = flink_tmpfile(f, t, path, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to link temporary file to %s: %m", path);
-
- log_info("%s written.", path);
-
- return 0;
-}
-
-static bool need_crypttab_one(const Partition *p) {
- assert(p);
-
- if (p->dropped)
- return false;
-
- if (p->encrypt == ENCRYPT_OFF)
- return false;
-
- if (!p->encrypted_volume)
- return false;
-
- return true;
-}
-
-static bool need_crypttab(Context *context) {
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions)
- if (need_crypttab_one(p))
- return true;
-
- return false;
-}
-
-static int context_crypttab(Context *context) {
- _cleanup_(unlink_and_freep) char *t = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- _cleanup_free_ char *path = NULL;
- int r;
-
- assert(context);
-
- if (!arg_generate_crypttab)
- return false;
-
- if (!need_crypttab(context)) {
- log_notice("EncryptedVolume= is not specified for any eligible partitions, not generating %s",
- arg_generate_crypttab);
- return 0;
- }
-
- path = path_join(arg_copy_source, arg_generate_crypttab);
- if (!path)
- return log_oom();
-
- r = fopen_tmpfile_linkable(path, O_WRONLY|O_CLOEXEC, &t, &f);
- if (r < 0)
- return log_error_errno(r, "Failed to open temporary file for %s: %m", path);
-
- fprintf(f, "# Automatically generated by systemd-repart\n\n");
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_free_ char *volume = NULL;
-
- if (!need_crypttab_one(p))
- continue;
-
- if (!p->encrypted_volume->name && asprintf(&volume, "luks-%s", SD_ID128_TO_UUID_STRING(p->luks_uuid)) < 0)
- return log_oom();
-
- fprintf(f, "%s UUID=%s %s %s\n",
- p->encrypted_volume->name ?: volume,
- SD_ID128_TO_UUID_STRING(p->luks_uuid),
- isempty(p->encrypted_volume->keyfile) ? "-" : p->encrypted_volume->keyfile,
- strempty(p->encrypted_volume->options));
- }
-
- r = flink_tmpfile(f, t, path, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to link temporary file to %s: %m", path);
-
- log_info("%s written.", path);
-
- return 0;
-}
-
-/* update block sizes for verity siblings, calculate hash partition size if requested */
-static int context_update_verity_size(Context *context) {
- int r;
-
- assert(context);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- Partition *dp;
-
- if (p->verity != VERITY_HASH)
- continue;
-
- if (p->dropped)
- continue;
-
- if (PARTITION_EXISTS(p)) /* Never format existing partitions */
- continue;
-
- assert_se(dp = p->siblings[VERITY_DATA]);
-
- if (p->verity_data_block_size == UINT64_MAX)
- p->verity_data_block_size = context->fs_sector_size;
-
- if (p->verity_hash_block_size == UINT64_MAX)
- p->verity_hash_block_size = context->fs_sector_size;
-
- uint64_t sz;
- if (dp->size_max != UINT64_MAX) {
- r = calculate_verity_hash_size(
- dp->size_max,
- p->verity_hash_block_size,
- p->verity_data_block_size,
- &sz);
- if (r < 0)
- return log_error_errno(r, "Failed to calculate size of dm-verity hash partition: %m");
-
- if (sz > p->size_min || sz > p->size_max)
- log_warning("The dm-verity hash partition %s may be too small for a data partition "
- "with SizeMaxBytes=%s. The hash partition would require %s for a data "
- "partition of specified max size. Consider increasing the size of the "
- "hash partition, or decreasing SizeMaxBytes= of the data partition.",
- p->definition_path, FORMAT_BYTES(dp->size_max), FORMAT_BYTES(sz));
- else if (p->size_min == UINT64_MAX) {
- log_debug("Derived size %s of verity hash partition %s from verity data partition %s.",
- FORMAT_BYTES(sz), p->definition_path, dp->definition_path);
-
- p->size_min = sz;
- }
- }
- }
-
- return 0;
-}
-
-static int context_minimize(Context *context) {
- const char *vt = NULL;
- unsigned attrs = 0;
- int r;
-
- assert(context);
-
- r = read_attr_fd(context->backing_fd, &attrs);
- if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
- return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
- _cleanup_(unlink_and_freep) char *temp = NULL;
- _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
- _cleanup_strv_free_ char **extra_mkfs_options = NULL;
- _cleanup_close_ int fd = -EBADF;
- _cleanup_free_ char *hint = NULL;
- sd_id128_t fs_uuid;
- struct stat st;
- uint64_t fsz;
-
- if (p->dropped)
- continue;
-
- if (PARTITION_EXISTS(p)) /* Never format existing partitions */
- continue;
-
- if (!p->format)
- continue;
-
- if (p->copy_blocks_fd >= 0)
- continue;
-
- if (p->minimize == MINIMIZE_OFF)
- continue;
-
- if (!partition_needs_populate(p))
- continue;
-
- assert(!p->copy_blocks_path);
-
- (void) partition_hint(p, context->node, &hint);
-
- log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size",
- p->format, strna(hint));
-
- if (!vt) {
- r = var_tmp_dir(&vt);
- if (r < 0)
- return log_error_errno(r, "Could not determine temporary directory: %m");
- }
-
- r = tempfn_random_child(vt, "repart", &temp);
- if (r < 0)
- return log_error_errno(r, "Failed to generate temporary file path: %m");
-
- fd = xopenat_full(
- AT_FDCWD,
- temp,
- O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY,
- attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
- 0600);
- if (fd < 0)
- return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
-
- if (fstype_is_ro(p->format))
- fs_uuid = p->fs_uuid;
- else {
- /* This may seem huge but it will be created sparse so it doesn't take up any space
- * on disk until written to. */
- if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0)
- return log_error_errno(errno, "Failed to truncate temporary file to %s: %m",
- FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL));
-
- if (arg_offline <= 0) {
- r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d);
- if (r < 0 && loop_device_error_is_fatal(p, r))
- return log_error_errno(r, "Failed to make loopback device of %s: %m", temp);
- }
-
- /* We're going to populate this filesystem twice so use a random UUID the first time
- * to avoid UUID conflicts. */
- r = sd_id128_randomize(&fs_uuid);
- if (r < 0)
- return r;
- }
-
- if (!d || fstype_is_ro(p->format)) {
- if (!mkfs_supports_root_option(p->format))
- return log_error_errno(SYNTHETIC_ERRNO(ENODEV),
- "Loop device access is required to populate %s filesystems.",
- p->format);
-
- r = partition_populate_directory(context, p, &root);
- if (r < 0)
- return r;
- }
-
- r = finalize_extra_mkfs_options(p, root, &extra_mkfs_options);
- if (r < 0)
- return r;
-
- r = make_filesystem(d ? d->node : temp,
- p->format,
- strempty(p->new_label),
- root,
- fs_uuid,
- arg_discard, /* quiet = */ false,
- context->fs_sector_size,
- p->compression,
- p->compression_level,
- extra_mkfs_options);
- if (r < 0)
- return r;
-
- /* Read-only filesystems are minimal from the first try because they create and size the
- * loopback file for us. */
- if (fstype_is_ro(p->format)) {
- fd = safe_close(fd);
-
- fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
- if (fd < 0)
- return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
-
- if (fstat(fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat temporary file: %m");
-
- log_info("Minimal partition size of %s filesystem of partition %s is %s",
- p->format, strna(hint), FORMAT_BYTES(st.st_size));
-
- p->copy_blocks_path = TAKE_PTR(temp);
- p->copy_blocks_path_is_our_file = true;
- p->copy_blocks_fd = TAKE_FD(fd);
- p->copy_blocks_size = st.st_size;
- continue;
- }
-
- if (!root) {
- assert(d);
-
- r = partition_populate_filesystem(context, p, d->node);
- if (r < 0)
- return r;
- }
-
- /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to
- * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the
- * filesystem down to a reasonable size again to fit it in the disk image. While there are
- * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking
- * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate
- * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse
- * loopback file, let's size the loopback file based on the actual data used by the
- * filesystem in the sparse file after the first attempt. This should be a good guess of the
- * minimal amount of space needed in the filesystem to fit all the required data.
- */
- r = fd_apparent_size(fd, &fsz);
- if (r < 0)
- return r;
-
- /* Massage the size a bit because just going by actual data used in the sparse file isn't
- * fool-proof. */
- uint64_t heuristic = streq(p->format, "xfs") ? fsz : fsz / 2;
- fsz = round_up_size(fsz + heuristic, context->grain_size);
- if (minimal_size_by_fs_name(p->format) != UINT64_MAX)
- fsz = MAX(minimal_size_by_fs_name(p->format), fsz);
-
- log_info("Minimal partition size of %s filesystem of partition %s is %s",
- p->format, strna(hint), FORMAT_BYTES(fsz));
-
- d = loop_device_unref(d);
-
- /* Erase the previous filesystem first. */
- if (ftruncate(fd, 0) < 0)
- return log_error_errno(errno, "Failed to erase temporary file: %m");
-
- if (ftruncate(fd, fsz) < 0)
- return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz));
-
- if (arg_offline <= 0) {
- r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d);
- if (r < 0 && loop_device_error_is_fatal(p, r))
- return log_error_errno(r, "Failed to make loopback device of %s: %m", temp);
- }
-
- r = make_filesystem(d ? d->node : temp,
- p->format,
- strempty(p->new_label),
- root,
- p->fs_uuid,
- arg_discard,
- /* quiet = */ false,
- context->fs_sector_size,
- p->compression,
- p->compression_level,
- extra_mkfs_options);
- if (r < 0)
- return r;
-
- if (!root) {
- assert(d);
-
- r = partition_populate_filesystem(context, p, d->node);
- if (r < 0)
- return r;
- }
-
- if (fstat(fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat temporary file: %m");
-
- p->copy_blocks_path = TAKE_PTR(temp);
- p->copy_blocks_path_is_our_file = true;
- p->copy_blocks_fd = TAKE_FD(fd);
- p->copy_blocks_size = st.st_size;
- }
-
- /* Now that we've done the data partitions, do the verity hash partitions. We do these in a separate
- * step because they might depend on data generated in the previous step. */
-
- LIST_FOREACH(partitions, p, context->partitions) {
- _cleanup_(unlink_and_freep) char *temp = NULL;
- _cleanup_free_ char *hint = NULL;
- _cleanup_close_ int fd = -EBADF;
- struct stat st;
- Partition *dp;
-
- if (p->dropped)
- continue;
-
- if (PARTITION_EXISTS(p)) /* Never format existing partitions */
- continue;
-
- if (p->minimize == MINIMIZE_OFF)
- continue;
-
- if (p->verity != VERITY_HASH)
- continue;
-
- assert_se(dp = p->siblings[VERITY_DATA]);
- assert(!dp->dropped);
- assert(dp->copy_blocks_path);
-
- (void) partition_hint(p, context->node, &hint);
-
- log_info("Pre-populating verity hash data of partition %s to calculate minimal partition size",
- strna(hint));
-
- if (!vt) {
- r = var_tmp_dir(&vt);
- if (r < 0)
- return log_error_errno(r, "Could not determine temporary directory: %m");
- }
-
- r = tempfn_random_child(vt, "repart", &temp);
- if (r < 0)
- return log_error_errno(r, "Failed to generate temporary file path: %m");
-
- fd = xopenat_full(
- AT_FDCWD,
- temp,
- O_RDONLY|O_CLOEXEC|O_CREAT|O_NONBLOCK,
- attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
- 0600);
- if (fd < 0)
- return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
-
- r = partition_format_verity_hash(context, p, temp, dp->copy_blocks_path);
- if (r < 0)
- return r;
-
- if (fstat(fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat temporary file: %m");
-
- log_info("Minimal partition size of verity hash partition %s is %s",
- strna(hint), FORMAT_BYTES(st.st_size));
-
- p->copy_blocks_path = TAKE_PTR(temp);
- p->copy_blocks_path_is_our_file = true;
- p->copy_blocks_fd = TAKE_FD(fd);
- p->copy_blocks_size = st.st_size;
- }
-
- return 0;
-}
-
-static int parse_partition_types(const char *p, GptPartitionType **partitions, size_t *n_partitions) {
- int r;
-
- assert(partitions);
- assert(n_partitions);
-
- for (;;) {
- _cleanup_free_ char *name = NULL;
- GptPartitionType type;
-
- r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
- if (r == 0)
- break;
- if (r < 0)
- return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p);
-
- r = gpt_partition_type_from_string(name, &type);
- if (r < 0)
- return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name);
-
- if (!GREEDY_REALLOC(*partitions, *n_partitions + 1))
- return log_oom();
-
- (*partitions)[(*n_partitions)++] = type;
- }
-
- return 0;
-}
-
-static int help(void) {
- _cleanup_free_ char *link = NULL;
- int r;
-
- r = terminal_urlify_man("systemd-repart", "8", &link);
- if (r < 0)
- return log_oom();
-
- printf("%1$s [OPTIONS...] [DEVICE]\n"
- "\n%5$sGrow and add partitions to a partition table, and generate disk images (DDIs).%6$s\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --no-pager Do not pipe output into a pager\n"
- " --no-legend Do not show the headers and footers\n"
- "\n%3$sOperation:%4$s\n"
- " --dry-run=BOOL Whether to run dry-run operation\n"
- " --empty=MODE One of refuse, allow, require, force, create; controls\n"
- " how to handle empty disks lacking partition tables\n"
- " --offline=BOOL Whether to build the image offline\n"
- " --discard=BOOL Whether to discard backing blocks for new partitions\n"
- " --sector-size=SIZE Set the logical sector size for the image\n"
- " --architecture=ARCH Set the generic architecture for the image\n"
- " --size=BYTES Grow loopback file to specified size\n"
- " --seed=UUID 128-bit seed UUID to derive all UUIDs from\n"
- " --split=BOOL Whether to generate split artifacts\n"
- "\n%3$sOutput:%4$s\n"
- " --pretty=BOOL Whether to show pretty summary before doing changes\n"
- " --json=pretty|short|off\n"
- " Generate JSON output\n"
- "\n%3$sFactory Reset:%4$s\n"
- " --factory-reset=BOOL Whether to remove data partitions before recreating\n"
- " them\n"
- " --can-factory-reset Test whether factory reset is defined\n"
- "\n%3$sConfiguration & Image Control:%4$s\n"
- " --root=PATH Operate relative to root path\n"
- " --image=PATH Operate relative to image file\n"
- " --image-policy=POLICY\n"
- " Specify disk image dissection policy\n"
- " --definitions=DIR Find partition definitions in specified directory\n"
- " --list-devices List candidate block devices to operate on\n"
- "\n%3$sVerity:%4$s\n"
- " --private-key=PATH|URI\n"
- " Private key to use when generating verity roothash\n"
- " signatures, or an engine or provider specific\n"
- " designation if --private-key-source= is used\n"
- " --private-key-source=file|provider:PROVIDER|engine:ENGINE\n"
- " Specify how to use KEY for --private-key=. Allows\n"
- " an OpenSSL engine/provider to be used when generating\n"
- " verity roothash signatures\n"
- " --certificate=PATH|URI\n"
- " PEM certificate to use when generating verity roothash\n"
- " signatures, or a provider specific designation if\n"
- " --certificate-source= is used\n"
- " --certificate-source=file|provider:PROVIDER\n"
- " Specify how to interpret the certificate from\n"
- " --certificate=. Allows the certificate to be loaded\n"
- " from an OpenSSL provider\n"
- "\n%3$sEncryption:%4$s\n"
- " --key-file=PATH Key to use when encrypting partitions\n"
- " --tpm2-device=PATH Path to TPM2 device node to use\n"
- " --tpm2-device-key=PATH\n"
- " Enroll a TPM2 device using its public key\n"
- " --tpm2-seal-key-handle=HANDLE\n"
- " Specify handle of key to use for sealing\n"
- " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n"
- " TPM2 PCR indexes to use for TPM2 enrollment\n"
- " --tpm2-public-key=PATH\n"
- " Enroll signed TPM2 PCR policy against PEM public key\n"
- " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n"
- " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n"
- " --tpm2-pcrlock=PATH\n"
- " Specify pcrlock policy to lock against\n"
- "\n%3$sPartition Control:%4$s\n"
- " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
- " Ignore partitions not of the specified types\n"
- " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
- " Ignore partitions of the specified types\n"
- " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
- " Take partitions of the specified types into account\n"
- " but don't populate them yet\n"
- "\n%3$sCopying:%4$s\n"
- " -s --copy-source=PATH Specify the primary source tree to copy files from\n"
- " --copy-from=IMAGE Copy partitions from the given image(s)\n"
- "\n%3$sDDI Profile:%4$s\n"
- " -S --make-ddi=sysext Make a system extension DDI\n"
- " -C --make-ddi=confext Make a configuration extension DDI\n"
- " -P --make-ddi=portable Make a portable service DDI\n"
- "\n%3$sAuxiliary Resource Generation:%4$s\n"
- " --generate-fstab=PATH\n"
- " Write fstab configuration to the given path\n"
- " --generate-crypttab=PATH\n"
- " Write crypttab configuration to the given path\n"
- "\nSee the %2$s for details.\n",
- program_invocation_short_name,
- link,
- ansi_underline(),
- ansi_normal(),
- ansi_highlight(),
- ansi_normal());
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[], X509 **ret_certificate, EVP_PKEY **ret_private_key, OpenSSLAskPasswordUI **ret_ui) {
- enum {
- ARG_VERSION = 0x100,
- ARG_NO_PAGER,
- ARG_NO_LEGEND,
- ARG_DRY_RUN,
- ARG_EMPTY,
- ARG_DISCARD,
- ARG_FACTORY_RESET,
- ARG_CAN_FACTORY_RESET,
- ARG_ROOT,
- ARG_IMAGE,
- ARG_IMAGE_POLICY,
- ARG_SEED,
- ARG_PRETTY,
- ARG_DEFINITIONS,
- ARG_SIZE,
- ARG_JSON,
- ARG_KEY_FILE,
- ARG_PRIVATE_KEY,
- ARG_PRIVATE_KEY_SOURCE,
- ARG_CERTIFICATE,
- ARG_CERTIFICATE_SOURCE,
- ARG_TPM2_DEVICE,
- ARG_TPM2_DEVICE_KEY,
- ARG_TPM2_SEAL_KEY_HANDLE,
- ARG_TPM2_PCRS,
- ARG_TPM2_PUBLIC_KEY,
- ARG_TPM2_PUBLIC_KEY_PCRS,
- ARG_TPM2_PCRLOCK,
- ARG_SPLIT,
- ARG_INCLUDE_PARTITIONS,
- ARG_EXCLUDE_PARTITIONS,
- ARG_DEFER_PARTITIONS,
- ARG_SECTOR_SIZE,
- ARG_SKIP_PARTITIONS,
- ARG_ARCHITECTURE,
- ARG_OFFLINE,
- ARG_COPY_FROM,
- ARG_MAKE_DDI,
- ARG_GENERATE_FSTAB,
- ARG_GENERATE_CRYPTTAB,
- ARG_LIST_DEVICES,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "no-pager", no_argument, NULL, ARG_NO_PAGER },
- { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
- { "dry-run", required_argument, NULL, ARG_DRY_RUN },
- { "empty", required_argument, NULL, ARG_EMPTY },
- { "discard", required_argument, NULL, ARG_DISCARD },
- { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET },
- { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET },
- { "root", required_argument, NULL, ARG_ROOT },
- { "image", required_argument, NULL, ARG_IMAGE },
- { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY },
- { "seed", required_argument, NULL, ARG_SEED },
- { "pretty", required_argument, NULL, ARG_PRETTY },
- { "definitions", required_argument, NULL, ARG_DEFINITIONS },
- { "size", required_argument, NULL, ARG_SIZE },
- { "json", required_argument, NULL, ARG_JSON },
- { "key-file", required_argument, NULL, ARG_KEY_FILE },
- { "private-key", required_argument, NULL, ARG_PRIVATE_KEY },
- { "private-key-source", required_argument, NULL, ARG_PRIVATE_KEY_SOURCE },
- { "certificate", required_argument, NULL, ARG_CERTIFICATE },
- { "certificate-source", required_argument, NULL, ARG_CERTIFICATE_SOURCE },
- { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE },
- { "tpm2-device-key", required_argument, NULL, ARG_TPM2_DEVICE_KEY },
- { "tpm2-seal-key-handle", required_argument, NULL, ARG_TPM2_SEAL_KEY_HANDLE },
- { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS },
- { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY },
- { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS },
- { "tpm2-pcrlock", required_argument, NULL, ARG_TPM2_PCRLOCK },
- { "split", required_argument, NULL, ARG_SPLIT },
- { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS },
- { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS },
- { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS },
- { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE },
- { "architecture", required_argument, NULL, ARG_ARCHITECTURE },
- { "offline", required_argument, NULL, ARG_OFFLINE },
- { "copy-from", required_argument, NULL, ARG_COPY_FROM },
- { "copy-source", required_argument, NULL, 's' },
- { "make-ddi", required_argument, NULL, ARG_MAKE_DDI },
- { "generate-fstab", required_argument, NULL, ARG_GENERATE_FSTAB },
- { "generate-crypttab", required_argument, NULL, ARG_GENERATE_CRYPTTAB },
- { "list-devices", no_argument, NULL, ARG_LIST_DEVICES },
- {}
- };
-
- _cleanup_(X509_freep) X509 *certificate = NULL;
- _cleanup_(openssl_ask_password_ui_freep) OpenSSLAskPasswordUI *ui = NULL;
- _cleanup_(EVP_PKEY_freep) EVP_PKEY *private_key = NULL;
- bool auto_hash_pcr_values = true, auto_public_key_pcr_mask = true, auto_pcrlock = true;
- int c, r;
-
- assert(argc >= 0);
- assert(argv);
- assert(ret_certificate);
- assert(ret_private_key);
- assert(ret_ui);
-
- while ((c = getopt_long(argc, argv, "hs:SCP", options, NULL)) >= 0)
-
- switch (c) {
-
- case 'h':
- return help();
-
- case ARG_VERSION:
- return version();
-
- case ARG_NO_PAGER:
- arg_pager_flags |= PAGER_DISABLE;
- break;
-
- case ARG_NO_LEGEND:
- arg_legend = false;
- break;
-
- case ARG_DRY_RUN:
- r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run);
- if (r < 0)
- return r;
- break;
-
- case ARG_EMPTY:
- if (isempty(optarg)) {
- arg_empty = EMPTY_UNSET;
- break;
- }
-
- arg_empty = empty_mode_from_string(optarg);
- if (arg_empty < 0)
- return log_error_errno(arg_empty, "Failed to parse --empty= parameter: %s", optarg);
-
- break;
-
- case ARG_DISCARD:
- r = parse_boolean_argument("--discard=", optarg, &arg_discard);
- if (r < 0)
- return r;
- break;
-
- case ARG_FACTORY_RESET:
- r = parse_boolean_argument("--factory-reset=", optarg, NULL);
- if (r < 0)
- return r;
- arg_factory_reset = r;
- break;
-
- case ARG_CAN_FACTORY_RESET:
- arg_can_factory_reset = true;
- break;
-
- case ARG_ROOT:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root);
- if (r < 0)
- return r;
- break;
-
- case ARG_IMAGE:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image);
- if (r < 0)
- return r;
- break;
-
- case ARG_IMAGE_POLICY:
- r = parse_image_policy_argument(optarg, &arg_image_policy);
- if (r < 0)
- return r;
- break;
-
- case ARG_SEED:
- if (isempty(optarg)) {
- arg_seed = SD_ID128_NULL;
- arg_randomize = false;
- } else if (streq(optarg, "random"))
- arg_randomize = true;
- else {
- r = sd_id128_from_string(optarg, &arg_seed);
- if (r < 0)
- return log_error_errno(r, "Failed to parse seed: %s", optarg);
-
- arg_randomize = false;
- }
-
- break;
-
- case ARG_PRETTY:
- r = parse_boolean_argument("--pretty=", optarg, NULL);
- if (r < 0)
- return r;
- arg_pretty = r;
- break;
-
- case ARG_DEFINITIONS: {
- _cleanup_free_ char *path = NULL;
- r = parse_path_argument(optarg, false, &path);
- if (r < 0)
- return r;
- if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0)
- return log_oom();
- break;
- }
-
- case ARG_SIZE: {
- uint64_t parsed, rounded;
-
- if (streq(optarg, "auto")) {
- arg_size = UINT64_MAX;
- arg_size_auto = true;
- break;
- }
-
- r = parse_size(optarg, 1024, &parsed);
- if (r < 0)
- return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg);
-
- rounded = round_up_size(parsed, 4096);
- if (rounded == 0)
- return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing.");
- if (rounded == UINT64_MAX)
- return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing.");
-
- if (rounded != parsed)
- log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")",
- parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded);
-
- arg_size = rounded;
- arg_size_auto = false;
- break;
- }
-
- case ARG_JSON:
- r = parse_json_argument(optarg, &arg_json_format_flags);
- if (r <= 0)
- return r;
-
- break;
-
- case ARG_KEY_FILE: {
- _cleanup_(erase_and_freep) char *k = NULL;
- size_t n = 0;
-
- r = read_full_file_full(
- AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX,
- READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET,
- NULL,
- &k, &n);
- if (r < 0)
- return log_error_errno(r, "Failed to read key file '%s': %m", optarg);
-
- erase_and_free(arg_key);
- arg_key = TAKE_PTR(k);
- arg_key_size = n;
- break;
- }
-
- case ARG_PRIVATE_KEY: {
- r = free_and_strdup_warn(&arg_private_key, optarg);
- if (r < 0)
- return r;
- break;
- }
-
- case ARG_PRIVATE_KEY_SOURCE:
- r = parse_openssl_key_source_argument(
- optarg,
- &arg_private_key_source,
- &arg_private_key_source_type);
- if (r < 0)
- return r;
- break;
-
- case ARG_CERTIFICATE:
- r = free_and_strdup_warn(&arg_certificate, optarg);
- if (r < 0)
- return r;
- break;
-
- case ARG_CERTIFICATE_SOURCE:
- r = parse_openssl_certificate_source_argument(
- optarg,
- &arg_certificate_source,
- &arg_certificate_source_type);
- if (r < 0)
- return r;
- break;
-
- case ARG_TPM2_DEVICE: {
- _cleanup_free_ char *device = NULL;
-
- if (streq(optarg, "list"))
- return tpm2_list_devices();
-
- if (!streq(optarg, "auto")) {
- device = strdup(optarg);
- if (!device)
- return log_oom();
- }
-
- free(arg_tpm2_device);
- arg_tpm2_device = TAKE_PTR(device);
- break;
- }
-
- case ARG_TPM2_DEVICE_KEY:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_device_key);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_TPM2_SEAL_KEY_HANDLE:
- r = safe_atou32_full(optarg, 16, &arg_tpm2_seal_key_handle);
- if (r < 0)
- return log_error_errno(r, "Could not parse TPM2 seal key handle index '%s': %m", optarg);
-
- break;
-
- case ARG_TPM2_PCRS:
- auto_hash_pcr_values = false;
- r = tpm2_parse_pcr_argument_append(optarg, &arg_tpm2_hash_pcr_values, &arg_tpm2_n_hash_pcr_values);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_TPM2_PUBLIC_KEY:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_TPM2_PUBLIC_KEY_PCRS:
- auto_public_key_pcr_mask = false;
- r = tpm2_parse_pcr_argument_to_mask(optarg, &arg_tpm2_public_key_pcr_mask);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_TPM2_PCRLOCK:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_pcrlock);
- if (r < 0)
- return r;
-
- auto_pcrlock = false;
- break;
-
- case ARG_SPLIT:
- r = parse_boolean_argument("--split=", optarg, NULL);
- if (r < 0)
- return r;
-
- arg_split = r;
- break;
-
- case ARG_INCLUDE_PARTITIONS:
- if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Combination of --include-partitions= and --exclude-partitions= is invalid.");
-
- r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions);
- if (r < 0)
- return r;
-
- arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE;
-
- break;
-
- case ARG_EXCLUDE_PARTITIONS:
- if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Combination of --include-partitions= and --exclude-partitions= is invalid.");
-
- r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions);
- if (r < 0)
- return r;
-
- arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE;
-
- break;
-
- case ARG_DEFER_PARTITIONS:
- r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_SECTOR_SIZE:
- r = parse_sector_size(optarg, &arg_sector_size);
- if (r < 0)
- return r;
-
- break;
-
- case ARG_ARCHITECTURE:
- r = architecture_from_string(optarg);
- if (r < 0)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid architecture '%s'.", optarg);
-
- arg_architecture = r;
- break;
-
- case ARG_OFFLINE:
- if (streq(optarg, "auto"))
- arg_offline = -1;
- else {
- r = parse_boolean_argument("--offline=", optarg, NULL);
- if (r < 0)
- return r;
-
- arg_offline = r;
- }
-
- break;
-
- case ARG_COPY_FROM: {
- _cleanup_free_ char *p = NULL;
-
- r = parse_path_argument(optarg, /* suppress_root= */ false, &p);
- if (r < 0)
- return r;
-
- if (strv_consume(&arg_copy_from, TAKE_PTR(p)) < 0)
- return log_oom();
-
- break;
- }
-
- case 's':
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_copy_source);
- if (r < 0)
- return r;
- break;
-
- case ARG_MAKE_DDI:
- if (!filename_is_valid(optarg))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid DDI type: %s", optarg);
-
- r = free_and_strdup_warn(&arg_make_ddi, optarg);
- if (r < 0)
- return r;
- break;
-
- case 'S':
- r = free_and_strdup_warn(&arg_make_ddi, "sysext");
- if (r < 0)
- return r;
- break;
-
- case 'C':
- r = free_and_strdup_warn(&arg_make_ddi, "confext");
- if (r < 0)
- return r;
- break;
-
- case 'P':
- r = free_and_strdup_warn(&arg_make_ddi, "portable");
- if (r < 0)
- return r;
- break;
-
- case ARG_GENERATE_FSTAB:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_generate_fstab);
- if (r < 0)
- return r;
- break;
-
- case ARG_GENERATE_CRYPTTAB:
- r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_generate_crypttab);
- if (r < 0)
- return r;
- break;
-
- case ARG_LIST_DEVICES:
- r = blockdev_list(BLOCKDEV_LIST_REQUIRE_PARTITION_SCANNING|BLOCKDEV_LIST_SHOW_SYMLINKS|BLOCKDEV_LIST_IGNORE_ZRAM);
- if (r < 0)
- return r;
-
- return 0;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached();
- }
-
- if (argc - optind > 1)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Expected at most one argument, the path to the block device or image file.");
-
- if (arg_make_ddi) {
- if (arg_definitions)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Combination of --make-ddi= and --definitions= is not supported.");
- if (!IN_SET(arg_empty, EMPTY_UNSET, EMPTY_CREATE))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Combination of --make-ddi= and --empty=%s is not supported.", empty_mode_to_string(arg_empty));
-
- /* Imply automatic sizing in DDI mode */
- if (arg_size == UINT64_MAX)
- arg_size_auto = true;
-
- if (!arg_copy_source)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No --copy-source= specified, refusing.");
-
- r = dir_is_empty(arg_copy_source, /* ignore_hidden_or_backup= */ false);
- if (r < 0)
- return log_error_errno(r, "Failed to determine if '%s' is empty: %m", arg_copy_source);
- if (r > 0)
- return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "Source directory '%s' is empty, refusing to create empty image.", arg_copy_source);
-
- if (sd_id128_is_null(arg_seed) && !arg_randomize) {
- /* We don't want that /etc/machine-id leaks into any image built this way, hence
- * let's randomize the seed if not specified explicitly */
- log_notice("No seed value specified, randomizing generated UUIDs, resulting image will not be reproducible.");
- arg_randomize = true;
- }
-
- arg_empty = EMPTY_CREATE;
- }
-
- if (arg_empty == EMPTY_UNSET) /* default to refuse mode, if not otherwise specified */
- arg_empty = EMPTY_REFUSE;
-
- if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE))
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid.");
-
- if (arg_can_factory_reset)
- arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence
- * non-dry-run mode makes no sense. Thus, imply dry run mode so that we
- * open things strictly read-only. */
- else if (arg_empty == EMPTY_CREATE)
- arg_dry_run = false; /* Imply --dry-run=no if we create the loopback file anew. After all we
- * cannot really break anyone's partition tables that way. */
-
- /* Disable pager once we are not just reviewing, but doing things. */
- if (!arg_dry_run)
- arg_pager_flags |= PAGER_DISABLE;
-
- if (arg_empty == EMPTY_CREATE && arg_size == UINT64_MAX && !arg_size_auto)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "If --empty=create is specified, --size= must be specified, too.");
-
- if (arg_image && arg_root)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
- else if (!arg_image && !arg_root && in_initrd()) {
-
- /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the
- * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/
- * is vendor-supplied but the root fs formatted on first boot. */
- r = path_is_mount_point("/sysusr/usr");
- if (r <= 0) {
- if (r < 0 && r != -ENOENT)
- log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m");
-
- arg_root = strdup("/sysroot");
- } else
- arg_root = strdup("/sysusr");
- if (!arg_root)
- return log_oom();
- }
-
- if (argc > optind) {
- arg_node = strdup(argv[optind]);
- if (!arg_node)
- return log_oom();
- }
-
- if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "A path to a device node or image file must be specified when --make-ddi=, --empty=force, --empty=require or --empty=create are used.");
-
- if (arg_split && !arg_node)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "A path to an image file must be specified when --split is used.");
-
- if (auto_pcrlock) {
- assert(!arg_tpm2_pcrlock);
-
- r = tpm2_pcrlock_search_file(NULL, NULL, &arg_tpm2_pcrlock);
- if (r < 0) {
- if (r != -ENOENT)
- log_warning_errno(r, "Search for pcrlock.json failed, assuming it does not exist: %m");
- } else
- log_debug("Automatically using pcrlock policy '%s'.", arg_tpm2_pcrlock);
- }
-
- if (auto_public_key_pcr_mask) {
- assert(arg_tpm2_public_key_pcr_mask == 0);
- arg_tpm2_public_key_pcr_mask = INDEX_TO_MASK(uint32_t, TPM2_PCR_KERNEL_BOOT);
- }
-
- if (auto_hash_pcr_values && !arg_tpm2_pcrlock) { /* Only lock to PCR 7 if no pcr policy is specified. */
- assert(arg_tpm2_n_hash_pcr_values == 0);
-
- if (!GREEDY_REALLOC_APPEND(
- arg_tpm2_hash_pcr_values,
- arg_tpm2_n_hash_pcr_values,
- &TPM2_PCR_VALUE_MAKE(TPM2_PCR_INDEX_DEFAULT, /* hash= */ 0, /* value= */ {}),
- 1))
- return log_oom();
- }
-
- if (arg_pretty < 0 && isatty_safe(STDOUT_FILENO))
- arg_pretty = true;
-
- if (arg_architecture >= 0) {
- FOREACH_ARRAY(p, arg_filter_partitions, arg_n_filter_partitions)
- *p = gpt_partition_type_override_architecture(*p, arg_architecture);
-
- FOREACH_ARRAY(p, arg_defer_partitions, arg_n_defer_partitions)
- *p = gpt_partition_type_override_architecture(*p, arg_architecture);
- }
-
- if (arg_certificate) {
- if (arg_certificate_source_type == OPENSSL_CERTIFICATE_SOURCE_FILE) {
- r = parse_path_argument(arg_certificate, /*suppress_root=*/ false, &arg_certificate);
- if (r < 0)
- return r;
- }
-
- r = openssl_load_x509_certificate(
- arg_certificate_source_type,
- arg_certificate_source,
- arg_certificate,
- &certificate);
- if (r < 0)
- return log_error_errno(r, "Failed to load X.509 certificate from %s: %m", arg_certificate);
- }
-
- if (arg_private_key) {
- if (arg_private_key_source_type == OPENSSL_KEY_SOURCE_FILE) {
- r = parse_path_argument(arg_private_key, /*suppress_root=*/ false, &arg_private_key);
- if (r < 0)
- return r;
- }
-
- r = openssl_load_private_key(
- arg_private_key_source_type,
- arg_private_key_source,
- arg_private_key,
- &(AskPasswordRequest) {
- .id = "repart-private-key-pin",
- .keyring = arg_private_key,
- .credential = "repart.private-key-pin",
- },
- &private_key,
- &ui);
- if (r < 0)
- return log_error_errno(r, "Failed to load private key from %s: %m", arg_private_key);
- }
-
- *ret_certificate = TAKE_PTR(certificate);
- *ret_private_key = TAKE_PTR(private_key);
- *ret_ui = TAKE_PTR(ui);
-
- return 1;
-}
-
-static int parse_proc_cmdline_factory_reset(void) {
- bool b;
- int r;
-
- if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */
- return 0;
-
- if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */
- return 0;
-
- r = proc_cmdline_get_bool("systemd.factory_reset", /* flags = */ 0, &b);
- if (r < 0)
- return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m");
- if (r > 0) {
- arg_factory_reset = b;
-
- if (b)
- log_notice("Honouring factory reset requested via kernel command line.");
- }
-
- return 0;
-}
-
-static int parse_efi_variable_factory_reset(void) {
- _cleanup_free_ char *value = NULL;
- int r;
-
- if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */
- return 0;
-
- if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */
- return 0;
-
- r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE_STR("FactoryReset"), &value);
- if (r < 0) {
- if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
- return 0;
- return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m");
- }
-
- r = parse_boolean(value);
- if (r < 0)
- return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m");
-
- arg_factory_reset = r;
- if (r)
- log_notice("Factory reset requested via EFI variable FactoryReset.");
-
- return 0;
-}
-
-static int remove_efi_variable_factory_reset(void) {
- int r;
-
- r = efi_set_variable(EFI_SYSTEMD_VARIABLE_STR("FactoryReset"), NULL, 0);
- if (r < 0) {
- if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
- return 0;
- return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m");
- }
-
- log_info("Successfully unset EFI variable FactoryReset.");
- return 0;
-}
-
-static int acquire_root_devno(
- const char *p,
- const char *root,
- int mode,
- char **ret,
- int *ret_fd) {
-
- _cleanup_free_ char *found_path = NULL, *node = NULL;
- dev_t devno, fd_devno = MODE_INVALID;
- _cleanup_close_ int fd = -EBADF;
- struct stat st;
- int r;
-
- assert(p);
- assert(ret);
- assert(ret_fd);
-
- fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path);
- if (fd < 0)
- return fd;
-
- if (fstat(fd, &st) < 0)
- return -errno;
-
- if (S_ISREG(st.st_mode)) {
- *ret = TAKE_PTR(found_path);
- *ret_fd = TAKE_FD(fd);
- return 0;
- }
-
- if (S_ISBLK(st.st_mode)) {
- /* Refuse referencing explicit block devices if a root dir is specified, after all we should
- * not be able to leave the image the root path constrains us to. */
- if (root)
- return -EPERM;
-
- fd_devno = devno = st.st_rdev;
- } else if (S_ISDIR(st.st_mode)) {
-
- devno = st.st_dev;
- if (major(devno) == 0) {
- r = btrfs_get_block_device_fd(fd, &devno);
- if (r == -ENOTTY) /* not btrfs */
- return -ENODEV;
- if (r < 0)
- return r;
- }
- } else
- return -ENOTBLK;
-
- /* From dm-crypt to backing partition */
- r = block_get_originating(devno, &devno);
- if (r == -ENOENT)
- log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p);
- else if (r < 0)
- log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p);
-
- /* From partition to whole disk containing it */
- r = block_get_whole_disk(devno, &devno);
- if (r < 0)
- log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p);
-
- r = devname_from_devnum(S_IFBLK, devno, &node);
- if (r < 0)
- return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p);
-
- /* Only if we still look at the same block device we can reuse the fd. Otherwise return an
- * invalidated fd. */
- if (fd_devno != MODE_INVALID && fd_devno == devno) {
- /* Tell udev not to interfere while we are processing the device */
- if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0)
- return log_error_errno(errno, "Failed to lock device '%s': %m", node);
-
- *ret_fd = TAKE_FD(fd);
- } else
- *ret_fd = -EBADF;
-
- *ret = TAKE_PTR(node);
- return 0;
-}
-
-static int find_root(Context *context) {
- _cleanup_free_ char *device = NULL;
- int r;
-
- assert(context);
-
- if (arg_node) {
- if (arg_empty == EMPTY_CREATE) {
- _cleanup_close_ int fd = -EBADF;
- _cleanup_free_ char *s = NULL;
-
- s = strdup(arg_node);
- if (!s)
- return log_oom();
-
- fd = xopenat_full(AT_FDCWD, arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, XO_NOCOW, 0666);
- if (fd < 0)
- return log_error_errno(errno, "Failed to create '%s': %m", arg_node);
-
- context->node = TAKE_PTR(s);
- context->node_is_our_file = true;
- context->backing_fd = TAKE_FD(fd);
- return 0;
- }
-
- /* Note that we don't specify a root argument here: if the user explicitly configured a node
- * we'll take it relative to the host, not the image */
- r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd);
- if (r == -EUCLEAN)
- return btrfs_log_dev_root(LOG_ERR, r, arg_node);
- if (r < 0)
- return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node);
-
- return 0;
- }
-
- assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW));
-
- /* If the root mount has been replaced by some form of volatile file system (overlayfs), the
- * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that
- * here. */
- r = readlink_malloc("/run/systemd/volatile-root", &device);
- if (r == -ENOENT) { /* volatile-root not found */
- /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The
- * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device
- * (think: volatile setups) */
-
- FOREACH_STRING(p, "/", "/usr") {
-
- r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node,
- &context->backing_fd);
- if (r < 0) {
- if (r == -EUCLEAN)
- return btrfs_log_dev_root(LOG_ERR, r, p);
- if (r != -ENODEV)
- return log_error_errno(r, "Failed to determine backing device of %s%s: %m", strempty(arg_root), p);
- } else
- return 0;
- }
- } else if (r < 0)
- return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m");
- else {
- r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd);
- if (r == -EUCLEAN)
- return btrfs_log_dev_root(LOG_ERR, r, device);
- if (r < 0)
- return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device);
-
- return 0;
- }
-
- return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device.");
-}
-
-static int resize_pt(int fd, uint64_t sector_size) {
- _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
- int r;
-
- /* After resizing the backing file we need to resize the partition table itself too, so that it takes
- * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and
- * immediately write it again, with no changes. */
-
- r = fdisk_new_context_at(fd, /* path= */ NULL, /* read_only= */ false, sector_size, &c);
- if (r < 0)
- return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd));
-
- r = fdisk_has_label(c);
- if (r < 0)
- return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd));
- if (r == 0) {
- log_debug("Not resizing partition table, as there currently is none.");
- return 0;
- }
-
- r = fdisk_write_disklabel(c);
- if (r < 0)
- return log_error_errno(r, "Failed to write resized partition table: %m");
-
- log_info("Resized partition table.");
- return 1;
-}
-
-static int resize_backing_fd(
- const char *node, /* The primary way we access the disk image to operate on */
- int *fd, /* An O_RDONLY fd referring to that inode */
- const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */
- LoopDevice *loop_device,
- uint64_t sector_size) {
-
- _cleanup_close_ int writable_fd = -EBADF;
- uint64_t current_size;
- struct stat st;
- int r;
-
- assert(node);
- assert(fd);
-
- if (arg_size == UINT64_MAX) /* Nothing to do */
- return 0;
-
- if (*fd < 0) {
- /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to
- * keep a reference to the file we can pass around. */
- *fd = open(node, O_RDONLY|O_CLOEXEC);
- if (*fd < 0)
- return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node);
- }
-
- if (fstat(*fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat '%s': %m", node);
-
- if (S_ISBLK(st.st_mode)) {
- if (!backing_file)
- return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node);
-
- assert(loop_device);
-
- r = blockdev_get_device_size(*fd, ¤t_size);
- if (r < 0)
- return log_error_errno(r, "Failed to determine size of block device %s: %m", node);
- } else {
- r = stat_verify_regular(&st);
- if (r < 0)
- return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node);
-
- assert(!backing_file);
- assert(!loop_device);
- current_size = st.st_size;
- }
-
- if (current_size >= arg_size) {
- log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)",
- node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
- return 0;
- }
-
- if (S_ISBLK(st.st_mode)) {
- assert(backing_file);
-
- /* This is a loopback device. We can't really grow those directly, but we can grow the
- * backing file, hence let's do that. */
-
- writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK);
- if (writable_fd < 0)
- return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file);
-
- if (fstat(writable_fd, &st) < 0)
- return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file);
-
- r = stat_verify_regular(&st);
- if (r < 0)
- return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file);
-
- if ((uint64_t) st.st_size != current_size)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "Size of backing file '%s' of loopback block device '%s' don't match, refusing.",
- node, backing_file);
- } else {
- assert(S_ISREG(st.st_mode));
- assert(!backing_file);
-
- /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We
- * reopen the file for that temporarily. We keep the writable fd only open for this operation though,
- * as fdisk can't accept it anyway. */
-
- writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC);
- if (writable_fd < 0)
- return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node);
- }
-
- if (!arg_discard) {
- if (fallocate(writable_fd, 0, 0, arg_size) < 0) {
- if (!ERRNO_IS_NOT_SUPPORTED(errno))
- return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m",
- node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
-
- /* Fallback to truncation, if fallocate() is not supported. */
- log_debug("Backing file system does not support fallocate(), falling back to ftruncate().");
- } else {
- if (current_size == 0) /* Likely regular file just created by us */
- log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node);
- else
- log_info("File '%s' grown from %s to %s by allocation.",
- node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
-
- goto done;
- }
- }
-
- if (ftruncate(writable_fd, arg_size) < 0)
- return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m",
- node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
-
- if (current_size == 0) /* Likely regular file just created by us */
- log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size));
- else
- log_info("File '%s' grown from %s to %s by truncation.",
- node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
-
-done:
- r = resize_pt(writable_fd, sector_size);
- if (r < 0)
- return r;
-
- if (loop_device) {
- r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size);
- if (r < 0)
- return log_error_errno(r, "Failed to update loop device size: %m");
- }
-
- return 1;
-}
-
-static int determine_auto_size(Context *c) {
- uint64_t sum;
-
- assert(c);
-
- sum = round_up_size(GPT_METADATA_SIZE, 4096);
-
- LIST_FOREACH(partitions, p, c->partitions) {
- uint64_t m;
-
- if (p->dropped || PARTITION_SUPPRESSED(p))
- continue;
-
- m = partition_min_size_with_padding(c, p);
- if (m > UINT64_MAX - sum)
- return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing.");
-
- sum += m;
- }
-
- if (c->total != UINT64_MAX)
- /* Image already allocated? Then show its size. */
- log_info("Automatically determined minimal disk image size as %s, current image size is %s.",
- FORMAT_BYTES(sum), FORMAT_BYTES(c->total));
- else
- /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */
- log_info("Automatically determined minimal disk image size as %s.",
- FORMAT_BYTES(sum));
-
- arg_size = sum;
- return 0;
-}
-
-static int run(int argc, char *argv[]) {
- _cleanup_(X509_freep) X509 *certificate = NULL;
- _cleanup_(openssl_ask_password_ui_freep) OpenSSLAskPasswordUI *ui = NULL;
- _cleanup_(EVP_PKEY_freep) EVP_PKEY *private_key = NULL;
- _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
- _cleanup_(umount_and_freep) char *mounted_dir = NULL;
- _cleanup_(context_freep) Context* context = NULL;
- bool node_is_our_loop = false;
- int r;
-
- log_setup();
-
- r = parse_argv(argc, argv, &certificate, &private_key, &ui);
- if (r <= 0)
- return r;
-
- r = parse_proc_cmdline_factory_reset();
- if (r < 0)
- return r;
-
- r = parse_efi_variable_factory_reset();
- if (r < 0)
- return r;
-
-#if HAVE_LIBCRYPTSETUP
- cryptsetup_enable_logging(NULL);
-#endif
-
- if (arg_image) {
- assert(!arg_root);
-
- /* Mount this strictly read-only: we shall modify the partition table, not the file
- * systems */
- r = mount_image_privately_interactively(
- arg_image,
- arg_image_policy,
- DISSECT_IMAGE_MOUNT_READ_ONLY |
- (arg_node ? DISSECT_IMAGE_DEVICE_READ_ONLY : 0) | /* If a different node to make changes to is specified let's open the device in read-only mode) */
- DISSECT_IMAGE_GPT_ONLY |
- DISSECT_IMAGE_RELAX_VAR_CHECK |
- DISSECT_IMAGE_USR_NO_ROOT |
- DISSECT_IMAGE_REQUIRE_ROOT |
- DISSECT_IMAGE_ALLOW_USERSPACE_VERITY,
- &mounted_dir,
- /* ret_dir_fd= */ NULL,
- &loop_device);
- if (r < 0)
- return r;
-
- arg_root = strdup(mounted_dir);
- if (!arg_root)
- return log_oom();
-
- if (!arg_node) {
- arg_node = strdup(loop_device->node);
- if (!arg_node)
- return log_oom();
-
- /* Remember that the device we are about to manipulate is actually the one we
- * allocated here, and thus to increase its backing file we know what to do */
- node_is_our_loop = true;
- }
- }
-
- if (!arg_copy_source && arg_root) {
- /* If no explicit copy source is specified, then use --root=/--image= */
- arg_copy_source = strdup(arg_root);
- if (!arg_copy_source)
- return log_oom();
- }
-
- context = context_new(arg_seed, certificate, private_key);
- if (!context)
- return log_oom();
-
- TAKE_PTR(certificate);
- TAKE_PTR(private_key);
-
- r = context_read_seed(context, arg_root);
- if (r < 0)
- return r;
-
- r = context_copy_from(context);
- if (r < 0)
- return r;
-
- if (arg_make_ddi) {
- _cleanup_free_ char *d = NULL, *dp = NULL;
- assert(!arg_definitions);
-
- d = strjoin(arg_make_ddi, ".repart.d/");
- if (!d)
- return log_oom();
-
- r = search_and_access(d, F_OK, NULL, CONF_PATHS_STRV("systemd/repart/definitions"), &dp);
- if (r < 0)
- return log_error_errno(r, "DDI type '%s' is not defined: %m", arg_make_ddi);
-
- if (strv_consume(&arg_definitions, TAKE_PTR(dp)) < 0)
- return log_oom();
- } else
- strv_uniq(arg_definitions);
-
- r = context_read_definitions(context);
- if (r < 0)
- return r;
-
- r = find_root(context);
- if (r == -ENODEV)
- return 76; /* Special return value which means "Root block device not found, so not doing
- * anything". This isn't really an error when called at boot. */
- if (r < 0)
- return r;
-
- if (arg_size != UINT64_MAX) {
- r = resize_backing_fd(
- context->node,
- &context->backing_fd,
- node_is_our_loop ? arg_image : NULL,
- node_is_our_loop ? loop_device : NULL,
- context->sector_size);
- if (r < 0)
- return r;
- }
-
- r = context_load_partition_table(context);
- if (r == -EHWPOISON)
- return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't
- * really an error when called at boot. */
- if (r < 0)
- return r;
- context->from_scratch = r > 0; /* Starting from scratch */
-
- if (arg_can_factory_reset) {
- r = context_can_factory_reset(context);
- if (r < 0)
- return r;
- if (r == 0)
- return EXIT_FAILURE;
-
- return 0;
- }
-
- r = context_factory_reset(context);
- if (r < 0)
- return r;
- if (r > 0) {
- /* We actually did a factory reset! */
- r = remove_efi_variable_factory_reset();
- if (r < 0)
- return r;
-
- /* Reload the reduced partition table */
- context_unload_partition_table(context);
- r = context_load_partition_table(context);
- if (r < 0)
- return r;
- }
-
- /* Open all files to copy blocks from now, since we want to take their size into consideration */
- r = context_open_copy_block_paths(
- context,
- loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */
- arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */
- (dev_t) -1); /* if neither is specified, make no restrictions */
- if (r < 0)
- return r;
-
- /* Make sure each partition has a unique UUID and unique label */
- r = context_acquire_partition_uuids_and_labels(context);
- if (r < 0)
- return r;
-
- r = context_fstab(context);
- if (r < 0)
- return r;
-
- r = context_crypttab(context);
- if (r < 0)
- return r;
-
- r = context_update_verity_size(context);
- if (r < 0)
- return r;
-
- r = context_minimize(context);
- if (r < 0)
- return r;
-
- if (arg_size_auto) {
- r = determine_auto_size(context);
- if (r < 0)
- return r;
-
- /* Flush out everything again, and let's grow the file first, then start fresh */
- context_unload_partition_table(context);
-
- assert(arg_size != UINT64_MAX);
- r = resize_backing_fd(
- context->node,
- &context->backing_fd,
- node_is_our_loop ? arg_image : NULL,
- node_is_our_loop ? loop_device : NULL,
- context->sector_size);
- if (r < 0)
- return r;
-
- r = context_load_partition_table(context);
- if (r < 0)
- return r;
- }
-
- /* First try to fit new partitions in, dropping by priority until it fits */
- for (;;) {
- uint64_t largest_free_area;
-
- if (context_allocate_partitions(context, &largest_free_area))
- break; /* Success! */
-
- if (context_unmerge_and_allocate_partitions(context))
- break; /* We had to un-suppress a supplement or few, but still success! */
-
- if (context_drop_or_foreignize_one_priority(context))
- continue; /* Still no luck. Let's drop a priority and try again. */
-
- /* No more priorities left to drop. This configuration just doesn't fit on this disk... */
- r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC),
- "Can't fit requested partitions into available free space (%s), refusing.",
- FORMAT_BYTES(largest_free_area));
- determine_auto_size(context);
- return r;
- }
-
- LIST_FOREACH(partitions, p, context->partitions) {
- if (!p->supplement_for)
- continue;
-
- if (PARTITION_SUPPRESSED(p)) {
- assert(!p->allocated_to_area);
- p->dropped = true;
-
- log_debug("Partition %s can be merged into %s, suppressing supplement.",
- p->definition_path, p->supplement_for->definition_path);
- } else if (PARTITION_EXISTS(p))
- log_info("Partition %s already exists on disk, using supplement verbatim.",
- p->definition_path);
- else
- log_info("Couldn't allocate partitions with %s merged into %s, using supplement verbatim.",
- p->definition_path, p->supplement_for->definition_path);
- }
-
- /* Now assign free space according to the weight logic */
- r = context_grow_partitions(context);
- if (r < 0)
- return r;
-
- /* Now calculate where each new partition gets placed */
- context_place_partitions(context);
-
- (void) context_dump(context, /*late=*/ false);
-
- r = context_write_partition_table(context);
- if (r < 0)
- return r;
-
- r = context_split(context);
- if (r < 0)
- return r;
-
- (void) context_dump(context, /*late=*/ true);
-
- context->node = mfree(context->node);
-
- LIST_FOREACH(partitions, p, context->partitions)
- p->split_path = mfree(p->split_path);
-
- return 0;
-}
-
-DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root
+Format=erofs
+CopyFiles=/etc/
+Verity=data
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity
+Verity=hash
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity-sig
+Verity=signature
+VerityMatchKey=root
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root
+Format=erofs
+CopyFiles=/
+Verity=data
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity
+Verity=hash
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity-sig
+Verity=signature
+VerityMatchKey=root
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root
+Format=erofs
+CopyFiles=/usr/
+CopyFiles=/opt/
+Verity=data
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity
+Verity=hash
+VerityMatchKey=root
+Minimize=best
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Partition]
+Type=root-verity-sig
+Verity=signature
+VerityMatchKey=root
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+executables += [
+ executable_template + {
+ 'name' : 'systemd-repart',
+ 'public' : true,
+ 'conditions' : ['ENABLE_REPART'],
+ 'sources' : files('repart.c'),
+ 'link_with' : [
+ libshared,
+ libshared_fdisk,
+ ],
+ 'dependencies' : [
+ libblkid,
+ libfdisk,
+ libopenssl,
+ threads,
+ ],
+ },
+ executable_template + {
+ 'name' : 'systemd-repart.standalone',
+ 'public' : have_standalone_binaries,
+ 'conditions' : ['ENABLE_REPART'],
+ 'sources' : files('repart.c'),
+ 'c_args' : '-DSTANDALONE',
+ 'link_with' : [
+ libbasic_static,
+ libshared_fdisk,
+ libshared_static,
+ libsystemd_static,
+ ],
+ 'dependencies' : [
+ libblkid,
+ libfdisk,
+ libopenssl,
+ threads,
+ ],
+ 'build_by_default' : have_standalone_binaries,
+ 'install' : have_standalone_binaries,
+ },
+]
+
+if conf.get('ENABLE_REPART') == 1
+ install_data('definitions/confext.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
+ install_data('definitions/confext.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
+ install_data('definitions/confext.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'confext.repart.d')
+ install_data('definitions/portable.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
+ install_data('definitions/portable.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
+ install_data('definitions/portable.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'portable.repart.d')
+ install_data('definitions/sysext.repart.d/10-root.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
+ install_data('definitions/sysext.repart.d/20-root-verity.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
+ install_data('definitions/sysext.repart.d/30-root-verity-sig.conf', install_dir : repartdefinitionsdir / 'sysext.repart.d')
+endif
--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#if HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+
+#include <fcntl.h>
+#include <getopt.h>
+#include <linux/fs.h>
+#include <linux/loop.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+
+#include "sd-device.h"
+#include "sd-id128.h"
+#include "sd-json.h"
+
+#include "alloc-util.h"
+#include "ask-password-api.h"
+#include "blkid-util.h"
+#include "blockdev-list.h"
+#include "blockdev-util.h"
+#include "btrfs-util.h"
+#include "build.h"
+#include "chase.h"
+#include "chattr-util.h"
+#include "conf-files.h"
+#include "conf-parser.h"
+#include "constants.h"
+#include "cryptsetup-util.h"
+#include "device-util.h"
+#include "devnum-util.h"
+#include "dirent-util.h"
+#include "efivars.h"
+#include "errno-util.h"
+#include "fd-util.h"
+#include "fdisk-util.h"
+#include "fileio.h"
+#include "format-table.h"
+#include "format-util.h"
+#include "fs-util.h"
+#include "glyph-util.h"
+#include "gpt.h"
+#include "hexdecoct.h"
+#include "hmac.h"
+#include "id128-util.h"
+#include "initrd-util.h"
+#include "io-util.h"
+#include "json-util.h"
+#include "list.h"
+#include "logarithm.h"
+#include "loop-util.h"
+#include "main-func.h"
+#include "mkdir.h"
+#include "mkfs-util.h"
+#include "mount-util.h"
+#include "mountpoint-util.h"
+#include "nulstr-util.h"
+#include "openssl-util.h"
+#include "parse-argument.h"
+#include "parse-helpers.h"
+#include "pretty-print.h"
+#include "proc-cmdline.h"
+#include "process-util.h"
+#include "random-util.h"
+#include "resize-fs.h"
+#include "rm-rf.h"
+#include "sort-util.h"
+#include "specifier.h"
+#include "stdio-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "sync-util.h"
+#include "terminal-util.h"
+#include "tmpfile-util.h"
+#include "tpm2-pcr.h"
+#include "tpm2-util.h"
+#include "user-util.h"
+#include "utf8.h"
+
+/* If not configured otherwise use a minimal partition size of 10M */
+#define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL)
+
+/* Hard lower limit for new partition sizes */
+#define HARD_MIN_SIZE 4096ULL
+
+/* We know up front we're never going to put more than this in a verity sig partition. */
+#define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL)
+
+/* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */
+#define GPT_METADATA_SIZE (1044ULL*1024ULL)
+
+/* LUKS2 takes off 16M of the partition size with its metadata by default */
+#define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL)
+
+/* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */
+#define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL)
+
+/* LUKS2 volume key size. */
+#define VOLUME_KEY_SIZE (512ULL/8ULL)
+
+/* Use 4K as the default filesystem sector size because as long as the partitions are aligned to 4K, the
+ * filesystems will then also be compatible with sector sizes 512, 1024 and 2048. */
+#define DEFAULT_FILESYSTEM_SECTOR_SIZE 4096ULL
+
+#define APIVFS_TMP_DIRS_NULSTR "proc\0sys\0dev\0tmp\0run\0var/tmp\0"
+
+/* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks
+ * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B
+ * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll
+ * waste 3K per partition, which is probably fine. */
+
+typedef enum EmptyMode {
+ EMPTY_UNSET, /* no choice has been made yet */
+ EMPTY_REFUSE, /* refuse empty disks, never create a partition table */
+ EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */
+ EMPTY_REQUIRE, /* require an empty disk, create a partition table */
+ EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */
+ EMPTY_CREATE, /* create disk as loopback file, create a partition table always */
+ _EMPTY_MODE_MAX,
+ _EMPTY_MODE_INVALID = -EINVAL,
+} EmptyMode;
+
+typedef enum FilterPartitionType {
+ FILTER_PARTITIONS_NONE,
+ FILTER_PARTITIONS_EXCLUDE,
+ FILTER_PARTITIONS_INCLUDE,
+ _FILTER_PARTITIONS_MAX,
+ _FILTER_PARTITIONS_INVALID = -EINVAL,
+} FilterPartitionsType;
+
+static EmptyMode arg_empty = EMPTY_UNSET;
+static bool arg_dry_run = true;
+static char *arg_node = NULL;
+static char *arg_root = NULL;
+static char *arg_image = NULL;
+static char **arg_definitions = NULL;
+static bool arg_discard = true;
+static bool arg_can_factory_reset = false;
+static int arg_factory_reset = -1;
+static sd_id128_t arg_seed = SD_ID128_NULL;
+static bool arg_randomize = false;
+static int arg_pretty = -1;
+static uint64_t arg_size = UINT64_MAX;
+static bool arg_size_auto = false;
+static sd_json_format_flags_t arg_json_format_flags = SD_JSON_FORMAT_OFF;
+static PagerFlags arg_pager_flags = 0;
+static bool arg_legend = true;
+static void *arg_key = NULL;
+static size_t arg_key_size = 0;
+static char *arg_private_key = NULL;
+static KeySourceType arg_private_key_source_type = OPENSSL_KEY_SOURCE_FILE;
+static char *arg_private_key_source = NULL;
+static char *arg_certificate = NULL;
+static CertificateSourceType arg_certificate_source_type = OPENSSL_CERTIFICATE_SOURCE_FILE;
+static char *arg_certificate_source = NULL;
+static char *arg_tpm2_device = NULL;
+static uint32_t arg_tpm2_seal_key_handle = 0;
+static char *arg_tpm2_device_key = NULL;
+static Tpm2PCRValue *arg_tpm2_hash_pcr_values = NULL;
+static size_t arg_tpm2_n_hash_pcr_values = 0;
+static char *arg_tpm2_public_key = NULL;
+static uint32_t arg_tpm2_public_key_pcr_mask = 0;
+static char *arg_tpm2_pcrlock = NULL;
+static bool arg_split = false;
+static GptPartitionType *arg_filter_partitions = NULL;
+static size_t arg_n_filter_partitions = 0;
+static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE;
+static GptPartitionType *arg_defer_partitions = NULL;
+static size_t arg_n_defer_partitions = 0;
+static uint64_t arg_sector_size = 0;
+static ImagePolicy *arg_image_policy = NULL;
+static Architecture arg_architecture = _ARCHITECTURE_INVALID;
+static int arg_offline = -1;
+static char **arg_copy_from = NULL;
+static char *arg_copy_source = NULL;
+static char *arg_make_ddi = NULL;
+static char *arg_generate_fstab = NULL;
+static char *arg_generate_crypttab = NULL;
+
+STATIC_DESTRUCTOR_REGISTER(arg_node, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep);
+STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep);
+STATIC_DESTRUCTOR_REGISTER(arg_private_key, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_private_key_source, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_certificate, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_certificate_source, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device_key, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tpm2_hash_pcr_values, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tpm2_pcrlock, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_defer_partitions, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep);
+STATIC_DESTRUCTOR_REGISTER(arg_copy_from, strv_freep);
+STATIC_DESTRUCTOR_REGISTER(arg_copy_source, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_make_ddi, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_generate_fstab, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_generate_crypttab, freep);
+
+typedef struct FreeArea FreeArea;
+
+typedef enum EncryptMode {
+ ENCRYPT_OFF,
+ ENCRYPT_KEY_FILE,
+ ENCRYPT_TPM2,
+ ENCRYPT_KEY_FILE_TPM2,
+ _ENCRYPT_MODE_MAX,
+ _ENCRYPT_MODE_INVALID = -EINVAL,
+} EncryptMode;
+
+typedef enum VerityMode {
+ VERITY_OFF,
+ VERITY_DATA,
+ VERITY_HASH,
+ VERITY_SIG,
+ _VERITY_MODE_MAX,
+ _VERITY_MODE_INVALID = -EINVAL,
+} VerityMode;
+
+typedef enum MinimizeMode {
+ MINIMIZE_OFF,
+ MINIMIZE_BEST,
+ MINIMIZE_GUESS,
+ _MINIMIZE_MODE_MAX,
+ _MINIMIZE_MODE_INVALID = -EINVAL,
+} MinimizeMode;
+
+typedef struct PartitionMountPoint {
+ char *where;
+ char *options;
+} PartitionMountPoint;
+
+static void partition_mountpoint_free_many(PartitionMountPoint *f, size_t n) {
+ assert(f || n == 0);
+
+ FOREACH_ARRAY(i, f, n) {
+ free(i->where);
+ free(i->options);
+ }
+
+ free(f);
+}
+
+typedef struct PartitionEncryptedVolume {
+ char *name;
+ char *keyfile;
+ char *options;
+} PartitionEncryptedVolume;
+
+static PartitionEncryptedVolume* partition_encrypted_volume_free(PartitionEncryptedVolume *c) {
+ if (!c)
+ return NULL;
+
+ free(c->name);
+ free(c->keyfile);
+ free(c->options);
+
+ return mfree(c);
+}
+
+typedef enum SubvolumeFlags {
+ SUBVOLUME_RO = 1 << 0,
+ _SUBVOLUME_FLAGS_MASK = SUBVOLUME_RO,
+ _SUBVOLUME_FLAGS_INVALID = -EINVAL,
+ _SUBVOLUME_FLAGS_ERRNO_MAX = -ERRNO_MAX, /* Ensure the whole errno range fits into this enum */
+} SubvolumeFlags;
+
+static SubvolumeFlags subvolume_flags_from_string_one(const char *s) {
+ /* This is a bitmask (i.e. not dense), hence we don't use the "string-table.h" stuff here. */
+
+ assert(s);
+
+ if (streq(s, "ro"))
+ return SUBVOLUME_RO;
+
+ return _SUBVOLUME_FLAGS_INVALID;
+}
+
+static SubvolumeFlags subvolume_flags_from_string(const char *s) {
+ SubvolumeFlags flags = 0;
+ int r;
+
+ assert(s);
+
+ for (;;) {
+ _cleanup_free_ char *f = NULL;
+ SubvolumeFlags ff;
+
+ r = extract_first_word(&s, &f, ",", EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ ff = subvolume_flags_from_string_one(f);
+ if (ff < 0)
+ return -EBADRQC; /* recognizable error */
+
+ flags |= ff;
+ }
+
+ return flags;
+}
+
+typedef struct Subvolume {
+ char *path;
+ SubvolumeFlags flags;
+} Subvolume;
+
+static Subvolume* subvolume_free(Subvolume *s) {
+ if (!s)
+ return NULL;
+
+ free(s->path);
+ return mfree(s);
+}
+
+DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(subvolume_hash_ops, char, path_hash_func, path_compare, Subvolume, subvolume_free);
+
+typedef struct Partition {
+ char *definition_path;
+ char **drop_in_files;
+
+ GptPartitionType type;
+ sd_id128_t current_uuid, new_uuid;
+ bool new_uuid_is_set;
+ char *current_label, *new_label;
+ sd_id128_t fs_uuid, luks_uuid, verity_uuid;
+ uint8_t verity_salt[SHA256_DIGEST_SIZE];
+
+ bool dropped;
+ bool factory_reset;
+ int32_t priority;
+
+ uint32_t weight, padding_weight;
+
+ uint64_t current_size, new_size;
+ uint64_t size_min, size_max;
+
+ uint64_t current_padding, new_padding;
+ uint64_t padding_min, padding_max;
+
+ uint64_t partno;
+ uint64_t offset;
+
+ struct fdisk_partition *current_partition;
+ struct fdisk_partition *new_partition;
+ FreeArea *padding_area;
+ FreeArea *allocated_to_area;
+
+ char *copy_blocks_path;
+ bool copy_blocks_path_is_our_file;
+ bool copy_blocks_auto;
+ const char *copy_blocks_root;
+ int copy_blocks_fd;
+ uint64_t copy_blocks_offset;
+ uint64_t copy_blocks_size;
+ uint64_t copy_blocks_done;
+
+ char *format;
+ char **copy_files;
+ char **exclude_files_source;
+ char **exclude_files_target;
+ char **make_directories;
+ char **make_symlinks;
+ OrderedHashmap *subvolumes;
+ char *default_subvolume;
+ EncryptMode encrypt;
+ VerityMode verity;
+ char *verity_match_key;
+ MinimizeMode minimize;
+ uint64_t verity_data_block_size;
+ uint64_t verity_hash_block_size;
+ char *compression;
+ char *compression_level;
+
+ uint64_t gpt_flags;
+ int no_auto;
+ int read_only;
+ int growfs;
+
+ struct iovec roothash;
+
+ char *split_name_format;
+ char *split_path;
+
+ PartitionMountPoint *mountpoints;
+ size_t n_mountpoints;
+
+ PartitionEncryptedVolume *encrypted_volume;
+
+ char *supplement_for_name;
+ struct Partition *supplement_for, *supplement_target_for;
+ struct Partition *suppressing;
+
+ struct Partition *siblings[_VERITY_MODE_MAX];
+
+ LIST_FIELDS(struct Partition, partitions);
+} Partition;
+
+#define PARTITION_IS_FOREIGN(p) (!(p)->definition_path)
+#define PARTITION_EXISTS(p) (!!(p)->current_partition)
+#define PARTITION_SUPPRESSED(p) ((p)->supplement_for && (p)->supplement_for->suppressing == (p))
+
+struct FreeArea {
+ Partition *after;
+ uint64_t size;
+ uint64_t allocated;
+};
+
+typedef struct Context {
+ LIST_HEAD(Partition, partitions);
+ size_t n_partitions;
+
+ FreeArea **free_areas;
+ size_t n_free_areas;
+
+ uint64_t start, end, total;
+
+ struct fdisk_context *fdisk_context;
+ uint64_t sector_size, grain_size, fs_sector_size;
+
+ sd_id128_t seed;
+
+ char *node;
+ bool node_is_our_file;
+ int backing_fd;
+
+ bool from_scratch;
+
+ X509 *certificate;
+ EVP_PKEY *private_key;
+} Context;
+
+static const char *empty_mode_table[_EMPTY_MODE_MAX] = {
+ [EMPTY_UNSET] = "unset",
+ [EMPTY_REFUSE] = "refuse",
+ [EMPTY_ALLOW] = "allow",
+ [EMPTY_REQUIRE] = "require",
+ [EMPTY_FORCE] = "force",
+ [EMPTY_CREATE] = "create",
+};
+
+static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = {
+ [ENCRYPT_OFF] = "off",
+ [ENCRYPT_KEY_FILE] = "key-file",
+ [ENCRYPT_TPM2] = "tpm2",
+ [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2",
+};
+
+static const char *verity_mode_table[_VERITY_MODE_MAX] = {
+ [VERITY_OFF] = "off",
+ [VERITY_DATA] = "data",
+ [VERITY_HASH] = "hash",
+ [VERITY_SIG] = "signature",
+};
+
+static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = {
+ [MINIMIZE_OFF] = "off",
+ [MINIMIZE_BEST] = "best",
+ [MINIMIZE_GUESS] = "guess",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP(empty_mode, EmptyMode);
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE);
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode);
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST);
+
+static uint64_t round_down_size(uint64_t v, uint64_t p) {
+ return (v / p) * p;
+}
+
+static uint64_t round_up_size(uint64_t v, uint64_t p) {
+
+ v = DIV_ROUND_UP(v, p);
+
+ if (v > UINT64_MAX / p)
+ return UINT64_MAX; /* overflow */
+
+ return v * p;
+}
+
+/* calculates the size of a dm-verity hash partition's contents */
+static int calculate_verity_hash_size(
+ uint64_t data_bytes,
+ uint64_t hash_block_size,
+ uint64_t data_block_size,
+ uint64_t *ret_bytes) {
+
+ /* The calculation here is based on the documented on-disk format of the dm-verity
+ * https://docs.kernel.org/admin-guide/device-mapper/verity.html#hash-tree
+ *
+ * Upstream implementation:
+ * https://gitlab.com/cryptsetup/cryptsetup/-/blob/v2.7.5/lib/verity/verity_hash.c */
+
+ uint64_t data_blocks = DIV_ROUND_UP(data_bytes, data_block_size);
+ if (data_blocks > UINT64_MAX / data_block_size)
+ return -EOVERFLOW;
+
+ /* hashes that fit in one hash block (node in the merkle tree) */
+ uint64_t hashes_per_hash_block = hash_block_size / SHA256_DIGEST_SIZE;
+
+ /* initialize with 2 for the root of the merkle tree + the superblock */
+ uint64_t hash_blocks = 2;
+
+ /* iterate through the levels of the merkle tree bottom up */
+ uint64_t remaining_blocks = data_blocks;
+
+ while (remaining_blocks > hashes_per_hash_block) {
+ uint64_t hash_blocks_for_level;
+ /* number of hash blocks required to reference the underlying blocks */
+ hash_blocks_for_level = DIV_ROUND_UP(remaining_blocks, hashes_per_hash_block);
+
+ if (hash_blocks > UINT64_MAX - hash_blocks_for_level)
+ return -EOVERFLOW;
+
+ /* add current layer to the total number of hash blocks */
+ hash_blocks += hash_blocks_for_level;
+ /* hashes on this level serve as the blocks on which the next level is built */
+ remaining_blocks = hash_blocks_for_level;
+ }
+
+ if (hash_blocks > UINT64_MAX / hash_block_size)
+ return -EOVERFLOW;
+
+ *ret_bytes = hash_blocks * hash_block_size;
+
+ return 0;
+}
+
+static Partition *partition_new(void) {
+ Partition *p;
+
+ p = new(Partition, 1);
+ if (!p)
+ return NULL;
+
+ *p = (Partition) {
+ .weight = 1000,
+ .padding_weight = 0,
+ .current_size = UINT64_MAX,
+ .new_size = UINT64_MAX,
+ .size_min = UINT64_MAX,
+ .size_max = UINT64_MAX,
+ .current_padding = UINT64_MAX,
+ .new_padding = UINT64_MAX,
+ .padding_min = UINT64_MAX,
+ .padding_max = UINT64_MAX,
+ .partno = UINT64_MAX,
+ .offset = UINT64_MAX,
+ .copy_blocks_fd = -EBADF,
+ .copy_blocks_offset = UINT64_MAX,
+ .copy_blocks_size = UINT64_MAX,
+ .no_auto = -1,
+ .read_only = -1,
+ .growfs = -1,
+ .verity_data_block_size = UINT64_MAX,
+ .verity_hash_block_size = UINT64_MAX,
+ };
+
+ return p;
+}
+
+static void partition_unlink_supplement(Partition *p) {
+ assert(p);
+
+ assert(!p->supplement_for || !p->supplement_target_for); /* Can't be both */
+
+ if (p->supplement_target_for) {
+ assert(p->supplement_target_for->supplement_for == p);
+
+ p->supplement_target_for->supplement_for = NULL;
+ }
+
+ if (p->supplement_for) {
+ assert(p->supplement_for->supplement_target_for == p);
+ assert(!p->supplement_for->suppressing || p->supplement_for->suppressing == p);
+
+ p->supplement_for->supplement_target_for = p->supplement_for->suppressing = NULL;
+ }
+
+ p->supplement_for_name = mfree(p->supplement_for_name);
+ p->supplement_target_for = p->supplement_for = p->suppressing = NULL;
+}
+
+static Partition* partition_free(Partition *p) {
+ if (!p)
+ return NULL;
+
+ free(p->current_label);
+ free(p->new_label);
+ free(p->definition_path);
+ strv_free(p->drop_in_files);
+
+ if (p->current_partition)
+ fdisk_unref_partition(p->current_partition);
+ if (p->new_partition)
+ fdisk_unref_partition(p->new_partition);
+
+ if (p->copy_blocks_path_is_our_file)
+ unlink_and_free(p->copy_blocks_path);
+ else
+ free(p->copy_blocks_path);
+ safe_close(p->copy_blocks_fd);
+
+ free(p->format);
+ strv_free(p->copy_files);
+ strv_free(p->exclude_files_source);
+ strv_free(p->exclude_files_target);
+ strv_free(p->make_directories);
+ strv_free(p->make_symlinks);
+ ordered_hashmap_free(p->subvolumes);
+ free(p->default_subvolume);
+ free(p->verity_match_key);
+ free(p->compression);
+ free(p->compression_level);
+
+ iovec_done(&p->roothash);
+
+ free(p->split_name_format);
+ unlink_and_free(p->split_path);
+
+ partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
+ p->mountpoints = NULL;
+ p->n_mountpoints = 0;
+
+ partition_encrypted_volume_free(p->encrypted_volume);
+
+ partition_unlink_supplement(p);
+
+ return mfree(p);
+}
+
+static void partition_foreignize(Partition *p) {
+ assert(p);
+ assert(PARTITION_EXISTS(p));
+
+ /* Reset several parameters set through definition file to make the partition foreign. */
+
+ p->definition_path = mfree(p->definition_path);
+ p->drop_in_files = strv_free(p->drop_in_files);
+
+ p->copy_blocks_path = mfree(p->copy_blocks_path);
+ p->copy_blocks_fd = safe_close(p->copy_blocks_fd);
+ p->copy_blocks_root = NULL;
+
+ p->format = mfree(p->format);
+ p->copy_files = strv_free(p->copy_files);
+ p->exclude_files_source = strv_free(p->exclude_files_source);
+ p->exclude_files_target = strv_free(p->exclude_files_target);
+ p->make_directories = strv_free(p->make_directories);
+ p->make_symlinks = strv_free(p->make_symlinks);
+ p->subvolumes = ordered_hashmap_free(p->subvolumes);
+ p->default_subvolume = mfree(p->default_subvolume);
+ p->verity_match_key = mfree(p->verity_match_key);
+ p->compression = mfree(p->compression);
+ p->compression_level = mfree(p->compression_level);
+
+ p->priority = 0;
+ p->weight = 1000;
+ p->padding_weight = 0;
+ p->size_min = UINT64_MAX;
+ p->size_max = UINT64_MAX;
+ p->padding_min = UINT64_MAX;
+ p->padding_max = UINT64_MAX;
+ p->no_auto = -1;
+ p->read_only = -1;
+ p->growfs = -1;
+ p->verity = VERITY_OFF;
+
+ partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
+ p->mountpoints = NULL;
+ p->n_mountpoints = 0;
+
+ p->encrypted_volume = partition_encrypted_volume_free(p->encrypted_volume);
+
+ partition_unlink_supplement(p);
+}
+
+static bool partition_type_exclude(const GptPartitionType *type) {
+ if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE)
+ return false;
+
+ for (size_t i = 0; i < arg_n_filter_partitions; i++)
+ if (sd_id128_equal(type->uuid, arg_filter_partitions[i].uuid))
+ return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE;
+
+ return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE;
+}
+
+static bool partition_type_defer(const GptPartitionType *type) {
+ for (size_t i = 0; i < arg_n_defer_partitions; i++)
+ if (sd_id128_equal(type->uuid, arg_defer_partitions[i].uuid))
+ return true;
+
+ return false;
+}
+
+static Partition* partition_unlink_and_free(Context *context, Partition *p) {
+ if (!p)
+ return NULL;
+
+ LIST_REMOVE(partitions, context->partitions, p);
+
+ assert(context->n_partitions > 0);
+ context->n_partitions--;
+
+ return partition_free(p);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free);
+
+static Context* context_new(sd_id128_t seed, X509 *certificate, EVP_PKEY *private_key) {
+ Context *context;
+
+ /* Note: This function takes ownership of the certificate and private_key arguments. */
+
+ context = new(Context, 1);
+ if (!context)
+ return NULL;
+
+ *context = (Context) {
+ .start = UINT64_MAX,
+ .end = UINT64_MAX,
+ .total = UINT64_MAX,
+ .seed = seed,
+ .certificate = certificate,
+ .private_key = private_key,
+ };
+
+ return context;
+}
+
+static void context_free_free_areas(Context *context) {
+ assert(context);
+
+ for (size_t i = 0; i < context->n_free_areas; i++)
+ free(context->free_areas[i]);
+
+ context->free_areas = mfree(context->free_areas);
+ context->n_free_areas = 0;
+}
+
+static Context* context_free(Context *context) {
+ if (!context)
+ return NULL;
+
+ while (context->partitions)
+ partition_unlink_and_free(context, context->partitions);
+ assert(context->n_partitions == 0);
+
+ context_free_free_areas(context);
+
+ if (context->fdisk_context)
+ fdisk_unref_context(context->fdisk_context);
+
+ safe_close(context->backing_fd);
+ if (context->node_is_our_file)
+ unlink_and_free(context->node);
+ else
+ free(context->node);
+
+ X509_free(context->certificate);
+ EVP_PKEY_free(context->private_key);
+
+ return mfree(context);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free);
+
+static int context_add_free_area(
+ Context *context,
+ uint64_t size,
+ Partition *after) {
+
+ FreeArea *a;
+
+ assert(context);
+ assert(!after || !after->padding_area);
+
+ if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1))
+ return -ENOMEM;
+
+ a = new(FreeArea, 1);
+ if (!a)
+ return -ENOMEM;
+
+ *a = (FreeArea) {
+ .size = size,
+ .after = after,
+ };
+
+ context->free_areas[context->n_free_areas++] = a;
+
+ if (after)
+ after->padding_area = a;
+
+ return 0;
+}
+
+static void partition_drop_or_foreignize(Partition *p) {
+ if (!p || p->dropped || PARTITION_IS_FOREIGN(p))
+ return;
+
+ if (PARTITION_EXISTS(p)) {
+ log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.",
+ strna(p->current_label ?: p->new_label), p->priority);
+
+ /* Handle the partition as foreign. Do not set dropped flag. */
+ partition_foreignize(p);
+ } else {
+ log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.",
+ p->definition_path, p->priority);
+
+ p->dropped = true;
+ p->allocated_to_area = NULL;
+
+ /* If a supplement partition is dropped, we don't want to merge in its settings. */
+ if (PARTITION_SUPPRESSED(p))
+ p->supplement_for->suppressing = NULL;
+ }
+}
+
+static bool context_drop_or_foreignize_one_priority(Context *context) {
+ int32_t priority = 0;
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->dropped)
+ continue;
+
+ priority = MAX(priority, p->priority);
+ }
+
+ /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at
+ * least one existing priority */
+ if (priority <= 0)
+ return false;
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->priority < priority)
+ continue;
+
+ partition_drop_or_foreignize(p);
+
+ /* We ensure that all verity sibling partitions have the same priority, so it's safe
+ * to drop all siblings here as well. */
+
+ for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++)
+ partition_drop_or_foreignize(p->siblings[mode]);
+ }
+
+ return true;
+}
+
+static uint64_t partition_min_size(const Context *context, const Partition *p) {
+ uint64_t sz, override_min;
+
+ assert(context);
+ assert(p);
+
+ /* Calculate the disk space we really need at minimum for this partition. If the partition already
+ * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less
+ * than 4K.
+ *
+ * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */
+
+ if (PARTITION_IS_FOREIGN(p)) {
+ /* Don't allow changing size of partitions not managed by us */
+ assert(p->current_size != UINT64_MAX);
+ return p->current_size;
+ }
+
+ if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY_SIG, PARTITION_USR_VERITY_SIG))
+ return VERITY_SIG_SIZE;
+
+ sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE;
+
+ if (!PARTITION_EXISTS(p)) {
+ uint64_t d = 0;
+
+ if (p->encrypt != ENCRYPT_OFF)
+ d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size);
+
+ if (p->copy_blocks_size != UINT64_MAX)
+ d += round_up_size(p->copy_blocks_size, context->grain_size);
+ else if (p->format || p->encrypt != ENCRYPT_OFF) {
+ uint64_t f;
+
+ /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */
+ f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX;
+ d += f == UINT64_MAX ? context->grain_size : f;
+ }
+
+ if (d > sz)
+ sz = d;
+ }
+
+ override_min = p->suppressing ? MAX(p->size_min, p->suppressing->size_min) : p->size_min;
+
+ return MAX(round_up_size(override_min != UINT64_MAX ? override_min : DEFAULT_MIN_SIZE, context->grain_size), sz);
+}
+
+static uint64_t partition_max_size(const Context *context, const Partition *p) {
+ uint64_t sm, override_max;
+
+ /* Calculate how large the partition may become at max. This is generally the configured maximum
+ * size, except when it already exists and is larger than that. In that case it's the existing size,
+ * since we never want to shrink partitions. */
+
+ assert(context);
+ assert(p);
+
+ if (PARTITION_IS_FOREIGN(p)) {
+ /* Don't allow changing size of partitions not managed by us */
+ assert(p->current_size != UINT64_MAX);
+ return p->current_size;
+ }
+
+ if (p->verity == VERITY_SIG)
+ return VERITY_SIG_SIZE;
+
+ override_max = p->suppressing ? MIN(p->size_max, p->suppressing->size_max) : p->size_max;
+ if (override_max == UINT64_MAX)
+ return UINT64_MAX;
+
+ sm = round_down_size(override_max, context->grain_size);
+
+ if (p->current_size != UINT64_MAX)
+ sm = MAX(p->current_size, sm);
+
+ return MAX(partition_min_size(context, p), sm);
+}
+
+static uint64_t partition_min_padding(const Partition *p) {
+ uint64_t override_min;
+
+ assert(p);
+
+ override_min = p->suppressing ? MAX(p->padding_min, p->suppressing->padding_min) : p->padding_min;
+ return override_min != UINT64_MAX ? override_min : 0;
+}
+
+static uint64_t partition_max_padding(const Partition *p) {
+ assert(p);
+ return p->suppressing ? MIN(p->padding_max, p->suppressing->padding_max) : p->padding_max;
+}
+
+static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) {
+ uint64_t sz;
+
+ /* Calculate the disk space we need for this partition plus any free space coming after it. This
+ * takes user configured padding into account as well as any additional whitespace needed to align
+ * the next partition to 4K again. */
+
+ assert(context);
+ assert(p);
+
+ sz = partition_min_size(context, p) + partition_min_padding(p);
+
+ if (PARTITION_EXISTS(p)) {
+ /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */
+ assert(p->offset != UINT64_MAX);
+ return round_up_size(p->offset + sz, context->grain_size) - p->offset;
+ }
+
+ /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */
+ return round_up_size(sz, context->grain_size);
+}
+
+static uint64_t free_area_available(const FreeArea *a) {
+ assert(a);
+
+ /* Determines how much of this free area is not allocated yet */
+
+ assert(a->size >= a->allocated);
+ return a->size - a->allocated;
+}
+
+static uint64_t free_area_current_end(Context *context, const FreeArea *a) {
+ assert(context);
+ assert(a);
+
+ if (!a->after)
+ return free_area_available(a);
+
+ assert(a->after->offset != UINT64_MAX);
+ assert(a->after->current_size != UINT64_MAX);
+
+ /* Calculate where the free area ends, based on the offset of the partition preceding it. */
+ return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a);
+}
+
+static uint64_t free_area_min_end(Context *context, const FreeArea *a) {
+ assert(context);
+ assert(a);
+
+ if (!a->after)
+ return 0;
+
+ assert(a->after->offset != UINT64_MAX);
+ assert(a->after->current_size != UINT64_MAX);
+
+ /* Calculate where the partition would end when we give it as much as it needs. */
+ return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size);
+}
+
+static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) {
+ assert(context);
+ assert(a);
+
+ /* Similar to free_area_available(), but takes into account that the required size and padding of the
+ * preceding partition is honoured. */
+
+ return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a));
+}
+
+static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) {
+ assert(context);
+
+ return CMP(free_area_available_for_new_partitions(context, *a),
+ free_area_available_for_new_partitions(context, *b));
+}
+
+static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) {
+ assert(context);
+ /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */
+ assert(amount <= total);
+ return LESS_BY(total, round_up_size(amount, context->grain_size));
+}
+
+static uint64_t charge_weight(uint64_t total, uint64_t amount) {
+ assert(amount <= total);
+ return total - amount;
+}
+
+static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) {
+ assert(context);
+
+ /* This may be called multiple times. Reset previous assignments. */
+ for (size_t i = 0; i < context->n_free_areas; i++)
+ context->free_areas[i]->allocated = 0;
+
+ /* Sort free areas by size, putting smallest first */
+ typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context);
+
+ /* In any case return size of the largest free area (i.e. not the size of all free areas
+ * combined!) */
+ if (ret_largest_free_area)
+ *ret_largest_free_area =
+ context->n_free_areas == 0 ? 0 :
+ free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]);
+
+ /* Check that each existing partition can fit its area. */
+ for (size_t i = 0; i < context->n_free_areas; i++)
+ if (free_area_current_end(context, context->free_areas[i]) <
+ free_area_min_end(context, context->free_areas[i]))
+ return false;
+
+ /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */
+ LIST_FOREACH(partitions, p, context->partitions) {
+ bool fits = false;
+ uint64_t required;
+ FreeArea *a = NULL;
+
+ if (p->dropped || PARTITION_IS_FOREIGN(p) || PARTITION_SUPPRESSED(p))
+ continue;
+
+ /* How much do we need to fit? */
+ required = partition_min_size_with_padding(context, p);
+ assert(required % context->grain_size == 0);
+
+ /* For existing partitions, we should verify that they'll actually fit */
+ if (PARTITION_EXISTS(p)) {
+ if (p->current_size + p->current_padding < required)
+ return false; /* 😢 We won't be able to grow to the required min size! */
+
+ continue;
+ }
+
+ /* For new partitions, see if there's a free area big enough */
+ for (size_t i = 0; i < context->n_free_areas; i++) {
+ a = context->free_areas[i];
+
+ if (free_area_available_for_new_partitions(context, a) >= required) {
+ fits = true;
+ break;
+ }
+ }
+
+ if (!fits)
+ return false; /* 😢 Oh no! We can't fit this partition into any free area! */
+
+ /* Assign the partition to this free area */
+ p->allocated_to_area = a;
+
+ /* Budget the minimal partition size */
+ a->allocated += required;
+ }
+
+ return true;
+}
+
+static bool context_unmerge_and_allocate_partitions(Context *context) {
+ assert(context);
+
+ /* This should only be called after plain context_allocate_partitions fails. This algorithm will
+ * try, in the order that minimizes the number of created supplement partitions, all combinations of
+ * un-suppressing supplement partitions until it finds one that works. */
+
+ /* First, let's try to un-suppress just one supplement partition and see if that gets us anywhere */
+ LIST_FOREACH(partitions, p, context->partitions) {
+ Partition *unsuppressed;
+
+ if (!p->suppressing)
+ continue;
+
+ unsuppressed = TAKE_PTR(p->suppressing);
+
+ if (context_allocate_partitions(context, NULL))
+ return true;
+
+ p->suppressing = unsuppressed;
+ }
+
+ /* Looks like not. So we have to un-suppress at least two partitions. We can do this recursively */
+ LIST_FOREACH(partitions, p, context->partitions) {
+ Partition *unsuppressed;
+
+ if (!p->suppressing)
+ continue;
+
+ unsuppressed = TAKE_PTR(p->suppressing);
+
+ if (context_unmerge_and_allocate_partitions(context))
+ return true;
+
+ p->suppressing = unsuppressed;
+ }
+
+ /* No combination of un-suppressed supplements made it possible to fit the partitions */
+ return false;
+}
+
+static uint32_t partition_weight(const Partition *p) {
+ assert(p);
+ return p->suppressing ? p->suppressing->weight : p->weight;
+}
+
+static uint32_t partition_padding_weight(const Partition *p) {
+ assert(p);
+ return p->suppressing ? p->suppressing->padding_weight : p->padding_weight;
+}
+
+static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) {
+ uint64_t weight_sum = 0;
+
+ assert(context);
+ assert(a);
+ assert(ret);
+
+ /* Determine the sum of the weights of all partitions placed in or before the specified free area */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->padding_area != a && p->allocated_to_area != a)
+ continue;
+
+ if (!INC_SAFE(&weight_sum, partition_weight(p)))
+ goto overflow_sum;
+
+ if (!INC_SAFE(&weight_sum, partition_padding_weight(p)))
+ goto overflow_sum;
+ }
+
+ *ret = weight_sum;
+ return 0;
+
+overflow_sum:
+ return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64-bit range, refusing.");
+}
+
+static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) {
+ assert(weight_sum >= weight);
+
+ for (;;) {
+ if (weight == 0)
+ return 0;
+ if (weight == weight_sum)
+ return value;
+ if (value <= UINT64_MAX / weight)
+ return value * weight / weight_sum;
+
+ /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the
+ * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down:
+ * - the sum of scale_by_weight() for all weights must not be larger than the input value,
+ * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */
+ weight_sum = DIV_ROUND_UP(weight_sum, 2);
+ weight /= 2;
+ }
+}
+
+typedef enum GrowPartitionPhase {
+ /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */
+ PHASE_FOREIGN,
+
+ /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */
+ PHASE_OVERCHARGE,
+
+ /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */
+ PHASE_UNDERCHARGE,
+
+ /* The third phase: we distribute what remains among the remaining partitions, according to the weights */
+ PHASE_DISTRIBUTE,
+
+ _GROW_PARTITION_PHASE_MAX,
+} GrowPartitionPhase;
+
+static bool context_grow_partitions_phase(
+ Context *context,
+ FreeArea *a,
+ GrowPartitionPhase phase,
+ uint64_t *span,
+ uint64_t *weight_sum) {
+
+ bool try_again = false;
+
+ assert(context);
+ assert(a);
+ assert(span);
+ assert(weight_sum);
+
+ /* Now let's look at the intended weights and adjust them taking the minimum space assignments into
+ * account. i.e. if a partition has a small weight but a high minimum space value set it should not
+ * get any additional room from the left-overs. Similar, if two partitions have the same weight they
+ * should get the same space if possible, even if one has a smaller minimum size than the other. */
+ LIST_FOREACH(partitions, p, context->partitions) {
+ /* Look only at partitions associated with this free area, i.e. immediately
+ * preceding it, or allocated into it */
+ if (p->allocated_to_area != a && p->padding_area != a)
+ continue;
+
+ if (p->new_size == UINT64_MAX) {
+ uint64_t share, rsz, xsz;
+ uint32_t weight;
+ bool charge = false;
+
+ weight = partition_weight(p);
+
+ /* Calculate how much this space this partition needs if everyone would get
+ * the weight based share */
+ share = scale_by_weight(*span, weight, *weight_sum);
+
+ rsz = partition_min_size(context, p);
+ xsz = partition_max_size(context, p);
+
+ if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) {
+ /* Never change of foreign partitions (i.e. those we don't manage) */
+
+ p->new_size = p->current_size;
+ charge = true;
+
+ } else if (phase == PHASE_OVERCHARGE && rsz > share) {
+ /* This partition needs more than its calculated share. Let's assign
+ * it that, and take this partition out of all calculations and start
+ * again. */
+
+ p->new_size = rsz;
+ charge = try_again = true;
+
+ } else if (phase == PHASE_UNDERCHARGE && xsz < share) {
+ /* This partition accepts less than its calculated
+ * share. Let's assign it that, and take this partition out
+ * of all calculations and start again. */
+
+ p->new_size = xsz;
+ charge = try_again = true;
+
+ } else if (phase == PHASE_DISTRIBUTE) {
+ /* This partition can accept its calculated share. Let's
+ * assign it. There's no need to restart things here since
+ * assigning this shouldn't impact the shares of the other
+ * partitions. */
+
+ assert(share >= rsz);
+ p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz);
+ charge = true;
+ }
+
+ if (charge) {
+ *span = charge_size(context, *span, p->new_size);
+ *weight_sum = charge_weight(*weight_sum, weight);
+ }
+ }
+
+ if (p->new_padding == UINT64_MAX) {
+ uint64_t share, rsz, xsz;
+ uint32_t padding_weight;
+ bool charge = false;
+
+ padding_weight = partition_padding_weight(p);
+
+ share = scale_by_weight(*span, padding_weight, *weight_sum);
+
+ rsz = partition_min_padding(p);
+ xsz = partition_max_padding(p);
+
+ if (phase == PHASE_OVERCHARGE && rsz > share) {
+ p->new_padding = rsz;
+ charge = try_again = true;
+ } else if (phase == PHASE_UNDERCHARGE && xsz < share) {
+ p->new_padding = xsz;
+ charge = try_again = true;
+ } else if (phase == PHASE_DISTRIBUTE) {
+ assert(share >= rsz);
+ p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz);
+ charge = true;
+ }
+
+ if (charge) {
+ *span = charge_size(context, *span, p->new_padding);
+ *weight_sum = charge_weight(*weight_sum, padding_weight);
+ }
+ }
+ }
+
+ return !try_again;
+}
+
+static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) {
+ uint64_t m;
+
+ assert(context);
+ assert(a);
+ assert(p);
+ assert(span);
+
+ if (*span == 0)
+ return;
+
+ if (p->allocated_to_area != a)
+ return;
+
+ if (PARTITION_IS_FOREIGN(p))
+ return;
+
+ assert(p->new_size != UINT64_MAX);
+
+ /* Calculate new size and align. */
+ m = round_down_size(p->new_size + *span, context->grain_size);
+ /* But ensure this doesn't shrink the size. */
+ m = MAX(m, p->new_size);
+ /* And ensure this doesn't exceed the maximum size. */
+ m = MIN(m, partition_max_size(context, p));
+
+ assert(m >= p->new_size);
+
+ *span = charge_size(context, *span, m - p->new_size);
+ p->new_size = m;
+}
+
+static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) {
+ uint64_t weight_sum = 0, span;
+ int r;
+
+ assert(context);
+ assert(a);
+
+ r = context_sum_weights(context, a, &weight_sum);
+ if (r < 0)
+ return r;
+
+ /* Let's calculate the total area covered by this free area and the partition before it */
+ span = a->size;
+ if (a->after) {
+ assert(a->after->offset != UINT64_MAX);
+ assert(a->after->current_size != UINT64_MAX);
+
+ span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset;
+ }
+
+ for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;)
+ if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum))
+ phase++; /* go to the next phase */
+
+ /* We still have space left over? Donate to preceding partition if we have one */
+ if (span > 0 && a->after)
+ context_grow_partition_one(context, a, a->after, &span);
+
+ /* What? Even still some space left (maybe because there was no preceding partition, or it had a
+ * size limit), then let's donate it to whoever wants it. */
+ if (span > 0)
+ LIST_FOREACH(partitions, p, context->partitions) {
+ context_grow_partition_one(context, a, p, &span);
+ if (span == 0)
+ break;
+ }
+
+ /* Yuck, still no one? Then make it padding */
+ if (span > 0 && a->after) {
+ assert(a->after->new_padding != UINT64_MAX);
+ a->after->new_padding += span;
+ }
+
+ return 0;
+}
+
+static int context_grow_partitions(Context *context) {
+ int r;
+
+ assert(context);
+
+ for (size_t i = 0; i < context->n_free_areas; i++) {
+ r = context_grow_partitions_on_free_area(context, context->free_areas[i]);
+ if (r < 0)
+ return r;
+ }
+
+ /* All existing partitions that have no free space after them can't change size */
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->dropped)
+ continue;
+
+ if (!PARTITION_EXISTS(p) || p->padding_area) {
+ /* The algorithm above must have initialized this already */
+ assert(p->new_size != UINT64_MAX);
+ continue;
+ }
+
+ assert(p->new_size == UINT64_MAX);
+ p->new_size = p->current_size;
+
+ assert(p->new_padding == UINT64_MAX);
+ p->new_padding = p->current_padding;
+ }
+
+ return 0;
+}
+
+static uint64_t find_first_unused_partno(Context *context) {
+ uint64_t partno = 0;
+
+ assert(context);
+
+ for (partno = 0;; partno++) {
+ bool found = false;
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (p->partno != UINT64_MAX && p->partno == partno)
+ found = true;
+ if (!found)
+ break;
+ }
+
+ return partno;
+}
+
+static void context_place_partitions(Context *context) {
+
+ assert(context);
+
+ for (size_t i = 0; i < context->n_free_areas; i++) {
+ FreeArea *a = context->free_areas[i];
+ _unused_ uint64_t left;
+ uint64_t start;
+
+ if (a->after) {
+ assert(a->after->offset != UINT64_MAX);
+ assert(a->after->new_size != UINT64_MAX);
+ assert(a->after->new_padding != UINT64_MAX);
+
+ start = a->after->offset + a->after->new_size + a->after->new_padding;
+ } else
+ start = context->start;
+
+ start = round_up_size(start, context->grain_size);
+ left = a->size;
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->allocated_to_area != a)
+ continue;
+
+ p->offset = start;
+ p->partno = find_first_unused_partno(context);
+
+ assert(left >= p->new_size);
+ start += p->new_size;
+ left -= p->new_size;
+
+ assert(left >= p->new_padding);
+ start += p->new_padding;
+ left -= p->new_padding;
+ }
+ }
+}
+
+static int config_parse_type(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ GptPartitionType *type = ASSERT_PTR(data);
+ int r;
+
+ assert(rvalue);
+
+ r = gpt_partition_type_from_string(rvalue, type);
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue);
+
+ if (arg_architecture >= 0)
+ *type = gpt_partition_type_override_architecture(*type, arg_architecture);
+
+ return 0;
+}
+
+static int config_parse_label(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *resolved = NULL;
+ char **label = ASSERT_PTR(data);
+ int r;
+
+ assert(rvalue);
+
+ /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of
+ * assigning the empty string to reset to default here, but really accept it as label to set. */
+
+ r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in Label=, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (!utf8_is_valid(resolved)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Partition label not valid UTF-8, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ r = gpt_partition_label_valid(resolved);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")",
+ resolved, rvalue);
+ return 0;
+ }
+ if (!r) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")",
+ resolved, rvalue);
+ return 0;
+ }
+
+ free_and_replace(*label, resolved);
+ return 0;
+}
+
+static int config_parse_weight(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ uint32_t *w = ASSERT_PTR(data), v;
+ int r;
+
+ assert(rvalue);
+
+ r = safe_atou32(rvalue, &v);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse weight value, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (v > 1000U*1000U) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v);
+ return 0;
+ }
+
+ *w = v;
+ return 0;
+}
+
+static int config_parse_size4096(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ uint64_t *sz = data, parsed;
+ int r;
+
+ assert(rvalue);
+ assert(data);
+
+ r = parse_size(rvalue, 1024, &parsed);
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse size value: %s", rvalue);
+
+ if (ltype > 0)
+ *sz = round_up_size(parsed, 4096);
+ else if (ltype < 0)
+ *sz = round_down_size(parsed, 4096);
+ else
+ *sz = parsed;
+
+ if (*sz != parsed)
+ log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.",
+ lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz);
+
+ return 0;
+}
+
+static int config_parse_block_size(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ uint64_t *blksz = ASSERT_PTR(data), parsed;
+ int r;
+
+ assert(rvalue);
+
+ r = parse_size(rvalue, 1024, &parsed);
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse size value: %s", rvalue);
+
+ if (parsed < 512 || parsed > 4096)
+ return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
+ "Value not between 512 and 4096: %s", rvalue);
+
+ if (!ISPOWEROF2(parsed))
+ return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
+ "Value not a power of 2: %s", rvalue);
+
+ *blksz = parsed;
+ return 0;
+}
+
+static int config_parse_fstype(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char **fstype = ASSERT_PTR(data);
+ const char *e;
+
+ assert(rvalue);
+
+ /* Let's provide an easy way to override the chosen fstype for file system partitions */
+ e = secure_getenv("SYSTEMD_REPART_OVERRIDE_FSTYPE");
+ if (e && !streq(rvalue, e)) {
+ log_syntax(unit, LOG_NOTICE, filename, line, 0,
+ "Overriding defined file system type '%s' with '%s'.", rvalue, e);
+ rvalue = e;
+ }
+
+ if (!filename_is_valid(rvalue))
+ return log_syntax(unit, LOG_ERR, filename, line, 0,
+ "File system type is not valid, refusing: %s", rvalue);
+
+ return free_and_strdup_warn(fstype, rvalue);
+}
+
+static int config_parse_copy_files(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL;
+ const char *p = rvalue, *target;
+ char ***copy_files = ASSERT_PTR(data);
+ int r;
+
+ assert(rvalue);
+
+ r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue);
+ if (r == 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue);
+ return 0;
+ }
+
+ r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue);
+ if (r == 0)
+ target = source; /* No target, then it's the same as the source */
+ else
+ target = buffer;
+
+ if (!isempty(p))
+ return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue);
+
+ r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target));
+ if (r < 0)
+ return log_oom();
+
+ return 0;
+}
+
+static int config_parse_exclude_files(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char ***exclude_files = ASSERT_PTR(data);
+ const char *p = ASSERT_PTR(rvalue);
+ int r;
+
+ if (isempty(rvalue)) {
+ *exclude_files = strv_free(*exclude_files);
+ return 0;
+ }
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *resolved = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", p);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in %s path, ignoring: %s", lvalue, word);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE|PATH_KEEP_TRAILING_SLASH, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0)
+ return log_oom();
+ }
+
+ return 0;
+}
+
+static int config_parse_copy_blocks(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *d = NULL;
+ Partition *partition = ASSERT_PTR(data);
+ int r;
+
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ partition->copy_blocks_path = mfree(partition->copy_blocks_path);
+ partition->copy_blocks_auto = false;
+ return 0;
+ }
+
+ if (streq(rvalue, "auto")) {
+ partition->copy_blocks_path = mfree(partition->copy_blocks_path);
+ partition->copy_blocks_auto = true;
+ partition->copy_blocks_root = arg_root;
+ return 0;
+ }
+
+ r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ free_and_replace(partition->copy_blocks_path, d);
+ partition->copy_blocks_auto = false;
+ partition->copy_blocks_root = arg_root;
+ return 0;
+}
+
+static int config_parse_make_dirs(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char ***sv = ASSERT_PTR(data);
+ const char *p = ASSERT_PTR(rvalue);
+ int r;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *d = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word);
+ continue;
+ }
+
+ r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ continue;
+
+ if (strv_contains(*sv, d))
+ continue;
+
+ r = strv_consume(sv, TAKE_PTR(d));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+static int config_parse_make_symlinks(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char ***sv = ASSERT_PTR(data);
+ const char *p = ASSERT_PTR(rvalue);
+ int r;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *path = NULL, *target = NULL, *d = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ const char *q = word;
+ r = extract_many_words(&q, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &target);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
+ continue;
+ }
+ if (r != 2) {
+ log_syntax(unit, LOG_WARNING, filename, line, SYNTHETIC_ERRNO(EINVAL),
+ "Missing source or target in %s, ignoring", rvalue);
+ continue;
+ }
+
+ r = specifier_printf(path, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, /*userdata=*/ NULL, &d);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in Subvolumes= parameter, ignoring: %s", path);
+ continue;
+ }
+
+ r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ continue;
+
+ r = strv_consume_pair(sv, TAKE_PTR(d), TAKE_PTR(target));
+ if (r < 0)
+ return log_error_errno(r, "Failed to add symlink to list: %m");
+ }
+}
+
+static int config_parse_subvolumes(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ OrderedHashmap **subvolumes = ASSERT_PTR(data);
+ const char *p = ASSERT_PTR(rvalue);
+ int r;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *path = NULL, *f = NULL, *d = NULL;
+ Subvolume *s = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ const char *q = word;
+ r = extract_many_words(&q, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &f);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
+ continue;
+ }
+
+ r = specifier_printf(path, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, /*userdata=*/ NULL, &d);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in Subvolumes= parameter, ignoring: %s", path);
+ continue;
+ }
+
+ r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ continue;
+
+ s = ordered_hashmap_get(*subvolumes, d);
+ if (!s) {
+ s = new(Subvolume, 1);
+ if (!s)
+ return log_oom();
+
+ *s = (Subvolume) {
+ .path = TAKE_PTR(d),
+ };
+
+ r = ordered_hashmap_ensure_put(subvolumes, &subvolume_hash_ops, s->path, s);
+ if (r < 0) {
+ subvolume_free(s);
+ return r;
+ }
+ }
+
+ if (f) {
+ SubvolumeFlags flags = subvolume_flags_from_string(f);
+ if (flags == -EBADRQC) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Unknown subvolume flag in subvolume, ignoring: %s", f);
+ continue;
+ }
+ if (flags < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse subvolume flags, ignoring: %s", f);
+ continue;
+ }
+
+ s->flags = flags;
+ }
+ }
+}
+
+static int config_parse_default_subvolume(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char **subvol = ASSERT_PTR(data);
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ if (isempty(rvalue)) {
+ *subvol = mfree(*subvol);
+ return 0;
+ }
+
+ r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &p);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to expand specifiers in DefaultSubvolume= parameter, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(p, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ return free_and_replace(*subvol, p);
+}
+
+static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF);
+
+static int config_parse_gpt_flags(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ uint64_t *gpt_flags = ASSERT_PTR(data);
+ int r;
+
+ assert(rvalue);
+
+ r = safe_atou64(rvalue, gpt_flags);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse Flags= value, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+static int config_parse_uuid(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Partition *partition = ASSERT_PTR(data);
+ int r;
+
+ if (isempty(rvalue)) {
+ partition->new_uuid = SD_ID128_NULL;
+ partition->new_uuid_is_set = false;
+ return 0;
+ }
+
+ if (streq(rvalue, "null")) {
+ partition->new_uuid = SD_ID128_NULL;
+ partition->new_uuid_is_set = true;
+ return 0;
+ }
+
+ r = sd_id128_from_string(rvalue, &partition->new_uuid);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128-bit ID/UUID, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ partition->new_uuid_is_set = true;
+
+ return 0;
+}
+
+static int config_parse_mountpoint(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *where = NULL, *options = NULL;
+ Partition *p = ASSERT_PTR(data);
+ int r;
+
+ if (isempty(rvalue)) {
+ partition_mountpoint_free_many(p->mountpoints, p->n_mountpoints);
+ return 0;
+ }
+
+ const char *q = rvalue;
+ r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS|EXTRACT_UNQUOTE,
+ &where, &options);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+ if (r < 1) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too few arguments in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+ if (!isempty(q)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too many arguments in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ r = path_simplify_and_warn(where, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+
+ if (!GREEDY_REALLOC(p->mountpoints, p->n_mountpoints + 1))
+ return log_oom();
+
+ p->mountpoints[p->n_mountpoints++] = (PartitionMountPoint) {
+ .where = TAKE_PTR(where),
+ .options = TAKE_PTR(options),
+ };
+
+ return 0;
+}
+
+static int config_parse_encrypted_volume(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *volume = NULL, *keyfile = NULL, *options = NULL;
+ Partition *p = ASSERT_PTR(data);
+ int r;
+
+ if (isempty(rvalue)) {
+ p->encrypted_volume = mfree(p->encrypted_volume);
+ return 0;
+ }
+
+ const char *q = rvalue;
+ r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS|EXTRACT_UNQUOTE,
+ &volume, &keyfile, &options);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+ if (r < 1) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too few arguments in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+ if (!isempty(q)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too many arguments in %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (!filename_is_valid(volume)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Volume name %s is not valid, ignoring", volume);
+ return 0;
+ }
+
+ partition_encrypted_volume_free(p->encrypted_volume);
+
+ p->encrypted_volume = new(PartitionEncryptedVolume, 1);
+ if (!p->encrypted_volume)
+ return log_oom();
+
+ *p->encrypted_volume = (PartitionEncryptedVolume) {
+ .name = TAKE_PTR(volume),
+ .keyfile = TAKE_PTR(keyfile),
+ .options = TAKE_PTR(options),
+ };
+
+ return 0;
+}
+
+static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF);
+static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF);
+
+static int partition_finalize_fstype(Partition *p, const char *path) {
+ _cleanup_free_ char *e = NULL, *upper = NULL;
+
+ assert(p);
+ assert(path);
+
+ if (!gpt_partition_type_has_filesystem(p->type))
+ return 0;
+
+ upper = strdup(partition_designator_to_string(p->type.designator));
+ if (!upper)
+ return log_oom();
+
+ e = strjoin("SYSTEMD_REPART_OVERRIDE_FSTYPE_", string_replace_char(ascii_strupper(upper), '-', '_'));
+ if (!e)
+ return log_oom();
+
+ const char *v = secure_getenv(e);
+ if (!v || streq(p->format, v))
+ return 0;
+
+ log_syntax(NULL, LOG_NOTICE, path, 1, 0,
+ "Overriding defined file system type '%s' for '%s' partition with '%s'.",
+ p->format, partition_designator_to_string(p->type.designator), v);
+
+ return free_and_strdup_warn(&p->format, v);
+}
+
+static bool partition_needs_populate(const Partition *p) {
+ assert(p);
+ assert(!p->supplement_for || !p->suppressing); /* Avoid infinite recursion */
+ return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || !strv_isempty(p->make_symlinks) ||
+ (p->suppressing && partition_needs_populate(p->suppressing));
+}
+
+static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) {
+
+ ConfigTableItem table[] = {
+ { "Partition", "Type", config_parse_type, 0, &p->type },
+ { "Partition", "Label", config_parse_label, 0, &p->new_label },
+ { "Partition", "UUID", config_parse_uuid, 0, p },
+ { "Partition", "Priority", config_parse_int32, 0, &p->priority },
+ { "Partition", "Weight", config_parse_weight, 0, &p->weight },
+ { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight },
+ { "Partition", "SizeMinBytes", config_parse_size4096, -1, &p->size_min },
+ { "Partition", "SizeMaxBytes", config_parse_size4096, 1, &p->size_max },
+ { "Partition", "PaddingMinBytes", config_parse_size4096, -1, &p->padding_min },
+ { "Partition", "PaddingMaxBytes", config_parse_size4096, 1, &p->padding_max },
+ { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset },
+ { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p },
+ { "Partition", "Format", config_parse_fstype, 0, &p->format },
+ { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files },
+ { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files_source },
+ { "Partition", "ExcludeFilesTarget", config_parse_exclude_files, 0, &p->exclude_files_target },
+ { "Partition", "MakeDirectories", config_parse_make_dirs, 0, &p->make_directories },
+ { "Partition", "MakeSymlinks", config_parse_make_symlinks, 0, &p->make_symlinks },
+ { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt },
+ { "Partition", "Verity", config_parse_verity, 0, &p->verity },
+ { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key },
+ { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags },
+ { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only },
+ { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto },
+ { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs },
+ { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format },
+ { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize },
+ { "Partition", "Subvolumes", config_parse_subvolumes, 0, &p->subvolumes },
+ { "Partition", "DefaultSubvolume", config_parse_default_subvolume, 0, &p->default_subvolume },
+ { "Partition", "VerityDataBlockSizeBytes", config_parse_block_size, 0, &p->verity_data_block_size },
+ { "Partition", "VerityHashBlockSizeBytes", config_parse_block_size, 0, &p->verity_hash_block_size },
+ { "Partition", "MountPoint", config_parse_mountpoint, 0, p },
+ { "Partition", "EncryptedVolume", config_parse_encrypted_volume, 0, p },
+ { "Partition", "Compression", config_parse_string, CONFIG_PARSE_STRING_SAFE_AND_ASCII, &p->compression },
+ { "Partition", "CompressionLevel", config_parse_string, CONFIG_PARSE_STRING_SAFE_AND_ASCII, &p->compression_level },
+ { "Partition", "SupplementFor", config_parse_string, 0, &p->supplement_for_name },
+ {}
+ };
+ _cleanup_free_ char *filename = NULL;
+ const char* dropin_dirname;
+ int r;
+
+ r = path_extract_filename(path, &filename);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);
+
+ dropin_dirname = strjoina(filename, ".d");
+
+ r = config_parse_many(
+ STRV_MAKE_CONST(path),
+ conf_file_dirs,
+ dropin_dirname,
+ arg_definitions ? NULL : arg_root,
+ "Partition\0",
+ config_item_table_lookup, table,
+ CONFIG_PARSE_WARN,
+ p,
+ NULL,
+ &p->drop_in_files);
+ if (r < 0)
+ return r;
+
+ if (partition_type_exclude(&p->type))
+ return 0;
+
+ if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SizeMinBytes= larger than SizeMaxBytes=, refusing.");
+
+ if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "PaddingMinBytes= larger than PaddingMaxBytes=, refusing.");
+
+ if (sd_id128_is_null(p->type.uuid))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Type= not defined, refusing.");
+
+ if ((p->copy_blocks_path || p->copy_blocks_auto) && (p->format || partition_needs_populate(p)))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Format=/CopyFiles=/MakeDirectories=/MakeSymlinks= and CopyBlocks= cannot be combined, refusing.");
+
+ if (partition_needs_populate(p) && streq_ptr(p->format, "swap"))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Format=swap and CopyFiles=/MakeDirectories=/MakeSymlinks= cannot be combined, refusing.");
+
+ if (!p->format) {
+ const char *format = NULL;
+
+ if (p->type.designator == PARTITION_SWAP)
+ format = "swap";
+ else if (partition_needs_populate(p) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))
+ /* Pick "vfat" as file system for esp and xbootldr partitions, otherwise default to "ext4". */
+ format = IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR) ? "vfat" : "ext4";
+
+ if (format) {
+ p->format = strdup(format);
+ if (!p->format)
+ return log_oom();
+ }
+ }
+
+ if (p->minimize != MINIMIZE_OFF && !p->format && p->verity != VERITY_HASH)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Minimize= can only be enabled if Format= or Verity=hash are set.");
+
+ if (p->minimize == MINIMIZE_BEST && (p->format && !fstype_is_ro(p->format)) && p->verity != VERITY_HASH)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Minimize=best can only be used with read-only filesystems or Verity=hash.");
+
+ if (partition_needs_populate(p) && !mkfs_supports_root_option(p->format) && geteuid() != 0)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM),
+ "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=/MakeSymlinks=.",
+ p->format);
+
+ if (p->format && fstype_is_ro(p->format) && !partition_needs_populate(p))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Cannot format %s filesystem without source files, refusing.", p->format);
+
+ if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) {
+ r = dlopen_cryptsetup();
+ if (r < 0)
+ return log_syntax(NULL, LOG_ERR, path, 1, r,
+ "libcryptsetup not found, Verity=/Encrypt= are not supported: %m");
+ }
+
+ if (p->verity != VERITY_OFF && !p->verity_match_key)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "VerityMatchKey= must be set if Verity=%s.", verity_mode_to_string(p->verity));
+
+ if (p->verity == VERITY_OFF && p->verity_match_key)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "VerityMatchKey= can only be set if Verity= is not \"%s\".",
+ verity_mode_to_string(p->verity));
+
+ if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && (p->copy_blocks_path || p->copy_blocks_auto || p->format || partition_needs_populate(p)))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "CopyBlocks=/CopyFiles=/Format=/MakeDirectories=/MakeSymlinks= cannot be used with Verity=%s.",
+ verity_mode_to_string(p->verity));
+
+ if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Encrypting verity hash/data partitions is not supported.");
+
+ if (p->verity == VERITY_SIG && !arg_private_key)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Verity signature partition requested but no private key provided (--private-key=).");
+
+ if (p->verity == VERITY_SIG && !arg_certificate)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Verity signature partition requested but no PEM certificate provided (--certificate=).");
+
+ if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s.",
+ verity_mode_to_string(p->verity));
+
+ if (!ordered_hashmap_isempty(p->subvolumes) && arg_offline > 0)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "Subvolumes= cannot be used with --offline=yes.");
+
+ if (p->default_subvolume && arg_offline > 0)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "DefaultSubvolume= cannot be used with --offline=yes.");
+
+ if (p->default_subvolume && !ordered_hashmap_contains(p->subvolumes, p->default_subvolume))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "DefaultSubvolume= must be one of the paths in Subvolumes=.");
+
+ if (p->supplement_for_name) {
+ if (!filename_part_is_valid(p->supplement_for_name))
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SupplementFor= is an invalid filename: %s",
+ p->supplement_for_name);
+
+ if (p->copy_blocks_path || p->copy_blocks_auto || p->encrypt != ENCRYPT_OFF ||
+ p->verity != VERITY_OFF)
+ return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SupplementFor= cannot be combined with CopyBlocks=/Encrypt=/Verity=");
+ }
+
+ /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */
+ if ((IN_SET(p->type.designator,
+ PARTITION_ROOT_VERITY,
+ PARTITION_USR_VERITY) || p->verity == VERITY_DATA) && p->read_only < 0)
+ p->read_only = true;
+
+ /* Default to "growfs" on, unless read-only */
+ if (gpt_partition_type_knows_growfs(p->type) &&
+ p->read_only <= 0)
+ p->growfs = true;
+
+ if (!p->split_name_format) {
+ char *s = strdup("%t");
+ if (!s)
+ return log_oom();
+
+ p->split_name_format = s;
+ } else if (streq(p->split_name_format, "-"))
+ p->split_name_format = mfree(p->split_name_format);
+
+ r = partition_finalize_fstype(p, path);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) {
+ Partition *s = NULL;
+
+ assert(p);
+ assert(p->verity != VERITY_OFF);
+ assert(p->verity_match_key);
+ assert(mode != VERITY_OFF);
+ assert(p->verity != mode);
+ assert(ret);
+
+ /* Try to find the matching sibling partition of the given type for a verity partition. For a data
+ * partition, this is the corresponding hash partition with the same verity name (and vice versa for
+ * the hash partition). */
+
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (p == q)
+ continue;
+
+ if (q->verity != mode)
+ continue;
+
+ assert(q->verity_match_key);
+
+ if (!streq(p->verity_match_key, q->verity_match_key))
+ continue;
+
+ if (s)
+ return -ENOTUNIQ;
+
+ s = q;
+ }
+
+ if (!s)
+ return -ENXIO;
+
+ *ret = s;
+
+ return 0;
+}
+
+static int context_open_and_lock_backing_fd(const char *node, int operation, int *backing_fd) {
+ _cleanup_close_ int fd = -EBADF;
+
+ assert(node);
+ assert(backing_fd);
+
+ if (*backing_fd >= 0)
+ return 0;
+
+ fd = open(node, O_RDONLY|O_CLOEXEC);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to open device '%s': %m", node);
+
+ /* Tell udev not to interfere while we are processing the device */
+ if (flock(fd, operation) < 0)
+ return log_error_errno(errno, "Failed to lock device '%s': %m", node);
+
+ log_debug("Device %s opened and locked.", node);
+ *backing_fd = TAKE_FD(fd);
+ return 1;
+}
+
+static int determine_current_padding(
+ struct fdisk_context *c,
+ struct fdisk_table *t,
+ struct fdisk_partition *p,
+ uint64_t secsz,
+ uint64_t grainsz,
+ uint64_t *ret) {
+
+ size_t n_partitions;
+ uint64_t offset, next = UINT64_MAX;
+
+ assert(c);
+ assert(t);
+ assert(p);
+ assert(ret);
+
+ if (!fdisk_partition_has_end(p))
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end.");
+
+ offset = fdisk_partition_get_end(p);
+ assert(offset < UINT64_MAX);
+ offset++; /* The end is one sector before the next partition or padding. */
+ assert(offset < UINT64_MAX / secsz);
+ offset *= secsz;
+
+ n_partitions = fdisk_table_get_nents(t);
+ for (size_t i = 0; i < n_partitions; i++) {
+ struct fdisk_partition *q;
+ uint64_t start;
+
+ q = fdisk_table_get_partition(t, i);
+ if (!q)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
+
+ if (fdisk_partition_is_used(q) <= 0)
+ continue;
+
+ if (!fdisk_partition_has_start(q))
+ continue;
+
+ start = fdisk_partition_get_start(q);
+ assert(start < UINT64_MAX / secsz);
+ start *= secsz;
+
+ if (start >= offset && (next == UINT64_MAX || next > start))
+ next = start;
+ }
+
+ if (next == UINT64_MAX) {
+ /* No later partition? In that case check the end of the usable area */
+ next = fdisk_get_last_lba(c);
+ assert(next < UINT64_MAX);
+ next++; /* The last LBA is one sector before the end */
+
+ assert(next < UINT64_MAX / secsz);
+ next *= secsz;
+
+ if (offset > next)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end.");
+ }
+
+ assert(next >= offset);
+ offset = round_up_size(offset, grainsz);
+ next = round_down_size(next, grainsz);
+
+ *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */
+ return 0;
+}
+
+static int context_copy_from_one(Context *context, const char *src) {
+ _cleanup_close_ int fd = -EBADF;
+ _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
+ _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL;
+ Partition *last = NULL;
+ unsigned long secsz, grainsz;
+ size_t n_partitions;
+ int r;
+
+ assert(src);
+
+ r = context_open_and_lock_backing_fd(src, LOCK_SH, &fd);
+ if (r < 0)
+ return r;
+
+ r = fd_verify_regular(fd);
+ if (r < 0)
+ return log_error_errno(r, "%s is not a file: %m", src);
+
+ r = fdisk_new_context_at(fd, /* path = */ NULL, /* read_only = */ true, /* sector_size = */ UINT32_MAX, &c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create fdisk context: %m");
+
+ secsz = fdisk_get_sector_size(c);
+ grainsz = fdisk_get_grain_size(c);
+
+ /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */
+ if (secsz < 512 || !ISPOWEROF2(secsz))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz);
+
+ if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
+ return log_error_errno(SYNTHETIC_ERRNO(EHWPOISON), "Cannot copy from disk %s with no GPT disk label.", src);
+
+ r = fdisk_get_partitions(c, &t);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire partition table: %m");
+
+ n_partitions = fdisk_table_get_nents(t);
+ for (size_t i = 0; i < n_partitions; i++) {
+ _cleanup_(partition_freep) Partition *np = NULL;
+ _cleanup_free_ char *label_copy = NULL;
+ struct fdisk_partition *p;
+ const char *label;
+ uint64_t sz, start, padding;
+ sd_id128_t ptid, id;
+ GptPartitionType type;
+
+ p = fdisk_table_get_partition(t, i);
+ if (!p)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
+
+ if (fdisk_partition_is_used(p) <= 0)
+ continue;
+
+ if (fdisk_partition_has_start(p) <= 0 ||
+ fdisk_partition_has_size(p) <= 0 ||
+ fdisk_partition_has_partno(p) <= 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number.");
+
+ r = fdisk_partition_get_type_as_id128(p, &ptid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query partition type UUID: %m");
+
+ type = gpt_partition_type_from_uuid(ptid);
+
+ r = fdisk_partition_get_uuid_as_id128(p, &id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query partition UUID: %m");
+
+ label = fdisk_partition_get_name(p);
+ if (!isempty(label)) {
+ label_copy = strdup(label);
+ if (!label_copy)
+ return log_oom();
+ }
+
+ sz = fdisk_partition_get_size(p);
+ assert(sz <= UINT64_MAX/secsz);
+ sz *= secsz;
+
+ start = fdisk_partition_get_start(p);
+ assert(start <= UINT64_MAX/secsz);
+ start *= secsz;
+
+ if (partition_type_exclude(&type))
+ continue;
+
+ np = partition_new();
+ if (!np)
+ return log_oom();
+
+ np->type = type;
+ np->new_uuid = id;
+ np->new_uuid_is_set = true;
+ np->size_min = np->size_max = sz;
+ np->new_label = TAKE_PTR(label_copy);
+
+ np->definition_path = strdup(src);
+ if (!np->definition_path)
+ return log_oom();
+
+ np->split_name_format = strdup("%t");
+ if (!np->split_name_format)
+ return log_oom();
+
+ r = determine_current_padding(c, t, p, secsz, grainsz, &padding);
+ if (r < 0)
+ return r;
+
+ np->padding_min = np->padding_max = padding;
+
+ np->copy_blocks_path = strdup(src);
+ if (!np->copy_blocks_path)
+ return log_oom();
+
+ np->copy_blocks_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+ if (np->copy_blocks_fd < 0)
+ return log_error_errno(r, "Failed to duplicate file descriptor of %s: %m", src);
+
+ np->copy_blocks_offset = start;
+ np->copy_blocks_size = sz;
+
+ r = fdisk_partition_get_attrs_as_uint64(p, &np->gpt_flags);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get partition flags: %m");
+
+ LIST_INSERT_AFTER(partitions, context->partitions, last, np);
+ last = TAKE_PTR(np);
+ context->n_partitions++;
+ }
+
+ return 0;
+}
+
+static int context_copy_from(Context *context) {
+ int r;
+
+ assert(context);
+
+ STRV_FOREACH(src, arg_copy_from) {
+ r = context_copy_from_one(context, *src);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static bool check_cross_def_ranges_valid(uint64_t a_min, uint64_t a_max, uint64_t b_min, uint64_t b_max) {
+ if (a_min == UINT64_MAX && b_min == UINT64_MAX)
+ return true;
+
+ if (a_max == UINT64_MAX && b_max == UINT64_MAX)
+ return true;
+
+ return MAX(a_min != UINT64_MAX ? a_min : 0, b_min != UINT64_MAX ? b_min : 0) <= MIN(a_max, b_max);
+}
+
+static int supplement_find_target(const Context *context, const Partition *supplement, Partition **ret) {
+ int r;
+
+ assert(context);
+ assert(supplement);
+ assert(ret);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *filename = NULL;
+
+ if (p == supplement)
+ continue;
+
+ r = path_extract_filename(p->definition_path, &filename);
+ if (r < 0)
+ return log_error_errno(r,
+ "Failed to extract filename from path '%s': %m",
+ p->definition_path);
+
+ *ASSERT_PTR(endswith(filename, ".conf")) = 0; /* Remove the file extension */
+
+ if (!streq(supplement->supplement_for_name, filename))
+ continue;
+
+ if (p->supplement_for_name)
+ return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SupplementFor= target is itself configured as a supplement.");
+
+ if (p->suppressing)
+ return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SupplementFor= target already has a supplement defined: %s",
+ p->suppressing->definition_path);
+
+ *ret = p;
+ return 0;
+ }
+
+ return log_syntax(NULL, LOG_ERR, supplement->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Couldn't find target partition for SupplementFor=%s",
+ supplement->supplement_for_name);
+}
+
+static int context_read_definitions(Context *context) {
+ _cleanup_strv_free_ char **files = NULL;
+ Partition *last = LIST_FIND_TAIL(partitions, context->partitions);
+ const char *const *dirs;
+ int r;
+
+ assert(context);
+
+ dirs = (const char* const*) (arg_definitions ?: CONF_PATHS_STRV("repart.d"));
+
+ r = conf_files_list_strv(&files, ".conf", arg_definitions ? NULL : arg_root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enumerate *.conf files: %m");
+
+ STRV_FOREACH(f, files) {
+ _cleanup_(partition_freep) Partition *p = NULL;
+
+ p = partition_new();
+ if (!p)
+ return log_oom();
+
+ p->definition_path = strdup(*f);
+ if (!p->definition_path)
+ return log_oom();
+
+ r = partition_read_definition(p, *f, dirs);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ LIST_INSERT_AFTER(partitions, context->partitions, last, p);
+ last = TAKE_PTR(p);
+ context->n_partitions++;
+ }
+
+ /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->verity == VERITY_OFF)
+ continue;
+
+ for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) {
+ Partition *q = NULL;
+
+ if (p->verity == mode)
+ continue;
+
+ if (p->siblings[mode])
+ continue;
+
+ r = find_verity_sibling(context, p, mode, &q);
+ if (r == -ENXIO) {
+ if (mode != VERITY_SIG)
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Missing verity %s partition for verity %s partition with VerityMatchKey=%s.",
+ verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
+ } else if (r == -ENOTUNIQ)
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s.",
+ verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
+ else if (r < 0)
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r,
+ "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s.",
+ verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key);
+
+ if (q) {
+ if (q->priority != p->priority)
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s.",
+ p->priority, q->priority, p->verity_match_key);
+
+ p->siblings[mode] = q;
+ }
+ }
+ }
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ Partition *dp;
+
+ if (p->verity != VERITY_HASH)
+ continue;
+
+ if (p->minimize == MINIMIZE_OFF)
+ continue;
+
+ assert_se(dp = p->siblings[VERITY_DATA]);
+
+ if (dp->minimize == MINIMIZE_OFF && !(dp->copy_blocks_path || dp->copy_blocks_auto))
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "Minimize= set for verity hash partition but data partition does not set CopyBlocks= or Minimize=.");
+ }
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ Partition *tgt = NULL;
+
+ if (!p->supplement_for_name)
+ continue;
+
+ r = supplement_find_target(context, p, &tgt);
+ if (r < 0)
+ return r;
+
+ if (tgt->copy_blocks_path || tgt->copy_blocks_auto || tgt->encrypt != ENCRYPT_OFF ||
+ tgt->verity != VERITY_OFF)
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SupplementFor= target uses CopyBlocks=/Encrypt=/Verity=");
+
+ if (!check_cross_def_ranges_valid(p->size_min, p->size_max, tgt->size_min, tgt->size_max))
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "SizeMinBytes= larger than SizeMaxBytes= when merged with SupplementFor= target.");
+
+ if (!check_cross_def_ranges_valid(p->padding_min, p->padding_max, tgt->padding_min, tgt->padding_max))
+ return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL),
+ "PaddingMinBytes= larger than PaddingMaxBytes= when merged with SupplementFor= target.");
+
+ p->supplement_for = tgt;
+ tgt->suppressing = tgt->supplement_target_for = p;
+ }
+
+ return 0;
+}
+
+static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) {
+ _cleanup_free_ char *ids = NULL;
+ int r;
+
+ if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING)
+ return -EINVAL;
+
+ ids = new(char, SD_ID128_UUID_STRING_MAX);
+ if (!ids)
+ return -ENOMEM;
+
+ r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids));
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(ids);
+ return 0;
+}
+
+static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) {
+ int r;
+
+ r = fdisk_set_ask(c, fdisk_ask_cb, &id);
+ if (r < 0)
+ return r;
+
+ r = fdisk_set_disklabel_id(c);
+ if (r < 0)
+ return r;
+
+ return fdisk_set_ask(c, NULL, NULL);
+}
+
+static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) {
+ union {
+ uint8_t md[SHA256_DIGEST_SIZE];
+ sd_id128_t id;
+ } result;
+
+ assert(token);
+ assert(ret);
+
+ /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we
+ * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the
+ * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's
+ * the machine ID we don't want to leak. */
+
+ hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md);
+
+ /* Take the first half, mark it as v4 UUID */
+ assert_cc(sizeof(result.md) == sizeof(result.id) * 2);
+ *ret = id128_make_v4_uuid(result.id);
+ return 0;
+}
+
+static void derive_salt(sd_id128_t base, const char *token, uint8_t ret[static SHA256_DIGEST_SIZE]) {
+ assert(token);
+
+ hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), ret);
+}
+
+static int context_load_partition_table(Context *context) {
+ _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
+ _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL;
+ uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors;
+ _cleanup_free_ char *disk_uuid_string = NULL;
+ bool from_scratch = false;
+ sd_id128_t disk_uuid;
+ size_t n_partitions;
+ unsigned long secsz;
+ uint64_t grainsz, fs_secsz = DEFAULT_FILESYSTEM_SECTOR_SIZE;
+ int r;
+
+ assert(context);
+ assert(!context->fdisk_context);
+ assert(!context->free_areas);
+ assert(context->start == UINT64_MAX);
+ assert(context->end == UINT64_MAX);
+ assert(context->total == UINT64_MAX);
+
+ c = fdisk_new_context();
+ if (!c)
+ return log_oom();
+
+ if (arg_sector_size > 0) {
+ fs_secsz = arg_sector_size;
+ r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size);
+ } else {
+ uint32_t ssz;
+ struct stat st;
+
+ r = context_open_and_lock_backing_fd(
+ context->node,
+ arg_dry_run ? LOCK_SH : LOCK_EX,
+ &context->backing_fd);
+ if (r < 0)
+ return r;
+
+ if (fstat(context->backing_fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat %s: %m", context->node);
+
+ if (IN_SET(arg_empty, EMPTY_REQUIRE, EMPTY_FORCE, EMPTY_CREATE) && S_ISREG(st.st_mode))
+ /* Don't probe sector size from partition table if we are supposed to start from an empty disk */
+ ssz = 512;
+ else {
+ /* Auto-detect sector size if not specified. */
+ r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz);
+ if (r < 0)
+ return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node);
+
+ /* If we found the sector size and we're operating on a block device, use it as the file
+ * system sector size as well, as we know its the sector size of the actual block device and
+ * not just the offset at which we found the GPT header. */
+ if (r > 0 && S_ISBLK(st.st_mode)) {
+ log_debug("Probed sector size of %s is %" PRIu32 " bytes.", context->node, ssz);
+ fs_secsz = ssz;
+ }
+ }
+
+ r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz);
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set sector size: %m");
+
+ /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the
+ * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */
+ r = fdisk_assign_device(
+ c,
+ context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node,
+ arg_dry_run);
+ if (r == -EINVAL && arg_size_auto) {
+ struct stat st;
+
+ /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept
+ * it if automatic sizing is requested. */
+
+ if (context->backing_fd < 0)
+ r = stat(context->node, &st);
+ else
+ r = fstat(context->backing_fd, &st);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node);
+
+ if (S_ISREG(st.st_mode) && st.st_size == 0) {
+ /* Use the fallback values if we have no better idea */
+ context->sector_size = fdisk_get_sector_size(c);
+ context->fs_sector_size = fs_secsz;
+ context->grain_size = 4096;
+ return /* from_scratch = */ true;
+ }
+
+ r = -EINVAL;
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to open device '%s': %m", context->node);
+
+ if (context->backing_fd < 0) {
+ /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */
+ r = context_open_and_lock_backing_fd(FORMAT_PROC_FD_PATH(fdisk_get_devfd(c)),
+ arg_dry_run ? LOCK_SH : LOCK_EX,
+ &context->backing_fd);
+ if (r < 0)
+ return r;
+ }
+
+ /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the
+ * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use
+ * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean
+ * the same thing universally. Also note that regardless what kind of sector size is in use we'll
+ * place partitions at multiples of 4K. */
+ secsz = fdisk_get_sector_size(c);
+
+ /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */
+ if (secsz < 512 || !ISPOWEROF2(secsz))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz);
+
+ /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or
+ * larger */
+ grainsz = secsz < 4096 ? 4096 : secsz;
+
+ log_debug("Sector size of device is %lu bytes. Using filesystem sector size of %" PRIu64 " and grain size of %" PRIu64 ".", secsz, fs_secsz, grainsz);
+
+ switch (arg_empty) {
+
+ case EMPTY_REFUSE:
+ /* Refuse empty disks, insist on an existing GPT partition table */
+ if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
+ return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node);
+
+ break;
+
+ case EMPTY_REQUIRE:
+ /* Require an empty disk, refuse any existing partition table */
+ r = fdisk_has_label(c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node);
+ if (r > 0)
+ return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node);
+
+ from_scratch = true;
+ break;
+
+ case EMPTY_ALLOW:
+ /* Allow both an empty disk and an existing partition table, but only GPT */
+ r = fdisk_has_label(c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node);
+ if (r > 0) {
+ if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT))
+ return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node);
+ } else
+ from_scratch = true;
+
+ break;
+
+ case EMPTY_FORCE:
+ case EMPTY_CREATE:
+ /* Always reinitiaize the disk, don't consider what there was on the disk before */
+ from_scratch = true;
+ break;
+
+ default:
+ assert_not_reached();
+ }
+
+ if (from_scratch) {
+ r = fdisk_create_disklabel(c, "gpt");
+ if (r < 0)
+ return log_error_errno(r, "Failed to create GPT disk label: %m");
+
+ r = derive_uuid(context->seed, "disk-uuid", &disk_uuid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire disk GPT uuid: %m");
+
+ r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set GPT disk label: %m");
+
+ goto add_initial_free_area;
+ }
+
+ r = fdisk_get_disklabel_id(c, &disk_uuid_string);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get current GPT disk label UUID: %m");
+
+ r = id128_from_string_nonzero(disk_uuid_string, &disk_uuid);
+ if (r == -ENXIO) {
+ r = derive_uuid(context->seed, "disk-uuid", &disk_uuid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire disk GPT uuid: %m");
+
+ r = fdisk_set_disklabel_id(c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set GPT disk label: %m");
+ } else if (r < 0)
+ return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m");
+
+ r = fdisk_get_partitions(c, &t);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire partition table: %m");
+
+ n_partitions = fdisk_table_get_nents(t);
+ for (size_t i = 0; i < n_partitions; i++) {
+ _cleanup_free_ char *label_copy = NULL;
+ Partition *last = NULL;
+ struct fdisk_partition *p;
+ const char *label;
+ uint64_t sz, start;
+ bool found = false;
+ sd_id128_t ptid, id;
+ size_t partno;
+
+ p = fdisk_table_get_partition(t, i);
+ if (!p)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata.");
+
+ if (fdisk_partition_is_used(p) <= 0)
+ continue;
+
+ if (fdisk_partition_has_start(p) <= 0 ||
+ fdisk_partition_has_size(p) <= 0 ||
+ fdisk_partition_has_partno(p) <= 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number.");
+
+ r = fdisk_partition_get_type_as_id128(p, &ptid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query partition type UUID: %m");
+
+ r = fdisk_partition_get_uuid_as_id128(p, &id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query partition UUID: %m");
+
+ label = fdisk_partition_get_name(p);
+ if (!isempty(label)) {
+ label_copy = strdup(label);
+ if (!label_copy)
+ return log_oom();
+ }
+
+ sz = fdisk_partition_get_size(p);
+ assert(sz <= UINT64_MAX/secsz);
+ sz *= secsz;
+
+ start = fdisk_partition_get_start(p);
+ assert(start <= UINT64_MAX/secsz);
+ start *= secsz;
+
+ partno = fdisk_partition_get_partno(p);
+
+ if (left_boundary == UINT64_MAX || left_boundary > start)
+ left_boundary = start;
+
+ /* Assign this existing partition to the first partition of the right type that doesn't have
+ * an existing one assigned yet. */
+ LIST_FOREACH(partitions, pp, context->partitions) {
+ last = pp;
+
+ if (!sd_id128_equal(pp->type.uuid, ptid))
+ continue;
+
+ if (!pp->current_partition) {
+ pp->current_uuid = id;
+ pp->current_size = sz;
+ pp->offset = start;
+ pp->partno = partno;
+ pp->current_label = TAKE_PTR(label_copy);
+
+ pp->current_partition = p;
+ fdisk_ref_partition(p);
+
+ r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding);
+ if (r < 0)
+ return r;
+
+ if (pp->current_padding > 0) {
+ r = context_add_free_area(context, pp->current_padding, pp);
+ if (r < 0)
+ return r;
+ }
+
+ found = true;
+ break;
+ }
+ }
+
+ /* If we have no matching definition, create a new one. */
+ if (!found) {
+ _cleanup_(partition_freep) Partition *np = NULL;
+
+ np = partition_new();
+ if (!np)
+ return log_oom();
+
+ np->current_uuid = id;
+ np->type = gpt_partition_type_from_uuid(ptid);
+ np->current_size = sz;
+ np->offset = start;
+ np->partno = partno;
+ np->current_label = TAKE_PTR(label_copy);
+
+ np->current_partition = p;
+ fdisk_ref_partition(p);
+
+ r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding);
+ if (r < 0)
+ return r;
+
+ if (np->current_padding > 0) {
+ r = context_add_free_area(context, np->current_padding, np);
+ if (r < 0)
+ return r;
+ }
+
+ LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np));
+ context->n_partitions++;
+ }
+ }
+
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (PARTITION_SUPPRESSED(p) && PARTITION_EXISTS(p))
+ p->supplement_for->suppressing = NULL;
+
+add_initial_free_area:
+ nsectors = fdisk_get_nsectors(c);
+ assert(nsectors <= UINT64_MAX/secsz);
+ nsectors *= secsz;
+
+ first_lba = fdisk_get_first_lba(c);
+ assert(first_lba <= UINT64_MAX/secsz);
+ first_lba *= secsz;
+
+ last_lba = fdisk_get_last_lba(c);
+ assert(last_lba < UINT64_MAX);
+ last_lba++;
+ assert(last_lba <= UINT64_MAX/secsz);
+ last_lba *= secsz;
+
+ assert(last_lba >= first_lba);
+
+ if (left_boundary == UINT64_MAX) {
+ /* No partitions at all? Then the whole disk is up for grabs. */
+
+ first_lba = round_up_size(first_lba, grainsz);
+ last_lba = round_down_size(last_lba, grainsz);
+
+ if (last_lba > first_lba) {
+ r = context_add_free_area(context, last_lba - first_lba, NULL);
+ if (r < 0)
+ return r;
+ }
+ } else {
+ /* Add space left of first partition */
+ assert(left_boundary >= first_lba);
+
+ first_lba = round_up_size(first_lba, grainsz);
+ left_boundary = round_down_size(left_boundary, grainsz);
+ last_lba = round_down_size(last_lba, grainsz);
+
+ if (left_boundary > first_lba) {
+ r = context_add_free_area(context, left_boundary - first_lba, NULL);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ context->start = first_lba;
+ context->end = last_lba;
+ context->total = nsectors;
+ context->sector_size = secsz;
+ context->fs_sector_size = fs_secsz;
+ context->grain_size = grainsz;
+ context->fdisk_context = TAKE_PTR(c);
+
+ return from_scratch;
+}
+
+static void context_unload_partition_table(Context *context) {
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+
+ /* Entirely remove partitions that have no configuration */
+ if (PARTITION_IS_FOREIGN(p)) {
+ partition_unlink_and_free(context, p);
+ continue;
+ }
+
+ /* Otherwise drop all data we read off the block device and everything we might have
+ * calculated based on it */
+
+ p->dropped = false;
+ p->current_size = UINT64_MAX;
+ p->new_size = UINT64_MAX;
+ p->current_padding = UINT64_MAX;
+ p->new_padding = UINT64_MAX;
+ p->partno = UINT64_MAX;
+ p->offset = UINT64_MAX;
+
+ if (p->current_partition) {
+ fdisk_unref_partition(p->current_partition);
+ p->current_partition = NULL;
+ }
+
+ if (p->new_partition) {
+ fdisk_unref_partition(p->new_partition);
+ p->new_partition = NULL;
+ }
+
+ p->padding_area = NULL;
+ p->allocated_to_area = NULL;
+
+ p->current_uuid = SD_ID128_NULL;
+ p->current_label = mfree(p->current_label);
+
+ /* A supplement partition is only ever un-suppressed if the existing partition table prevented
+ * us from suppressing it. So when unloading the partition table, we must re-suppress. */
+ if (p->supplement_for)
+ p->supplement_for->suppressing = p;
+ }
+
+ context->start = UINT64_MAX;
+ context->end = UINT64_MAX;
+ context->total = UINT64_MAX;
+
+ if (context->fdisk_context) {
+ fdisk_unref_context(context->fdisk_context);
+ context->fdisk_context = NULL;
+ }
+
+ context_free_free_areas(context);
+}
+
+static int format_size_change(uint64_t from, uint64_t to, char **ret) {
+ char *t;
+
+ if (from != UINT64_MAX) {
+ if (from == to || to == UINT64_MAX)
+ t = strdup(FORMAT_BYTES(from));
+ else
+ t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to));
+ } else if (to != UINT64_MAX)
+ t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to));
+ else {
+ *ret = NULL;
+ return 0;
+ }
+
+ if (!t)
+ return log_oom();
+
+ *ret = t;
+ return 1;
+}
+
+static const char *partition_label(const Partition *p) {
+ assert(p);
+
+ if (p->new_label)
+ return p->new_label;
+
+ if (p->current_label)
+ return p->current_label;
+
+ return gpt_partition_type_uuid_to_string(p->type.uuid);
+}
+
+static int context_dump_partitions(Context *context) {
+ _cleanup_(table_unrefp) Table *t = NULL;
+ uint64_t sum_padding = 0, sum_size = 0;
+ int r;
+ const size_t roothash_col = 14, dropin_files_col = 15, split_path_col = 16;
+ bool has_roothash = false, has_dropin_files = false, has_split_path = false;
+
+ if (context->n_partitions == 0 && !sd_json_format_enabled(arg_json_format_flags)) {
+ log_info("Empty partition table.");
+ return 0;
+ }
+
+ t = table_new("type",
+ "label",
+ "uuid",
+ "partno",
+ "file",
+ "node",
+ "offset",
+ "old size",
+ "raw size",
+ "size",
+ "old padding",
+ "raw padding",
+ "padding",
+ "activity",
+ "roothash",
+ "drop-in files",
+ "split path");
+ if (!t)
+ return log_oom();
+
+ /* Starting in v257, these fields would be automatically formatted with underscores. This would have
+ * been a breaking change, so to avoid that let's hard-code their original names. */
+ table_set_json_field_name(t, 15, "drop-in_files");
+
+ if (!DEBUG_LOGGING) {
+ if (!sd_json_format_enabled(arg_json_format_flags))
+ (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4,
+ (size_t) 8, (size_t) 9, (size_t) 12, roothash_col, dropin_files_col,
+ split_path_col);
+ else
+ (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4,
+ (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 8, (size_t) 10,
+ (size_t) 11, (size_t) 13, roothash_col, dropin_files_col,
+ split_path_col);
+ }
+
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100);
+ (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL;
+ char uuid_buffer[SD_ID128_UUID_STRING_MAX];
+ const char *label, *activity = NULL;
+
+ if (p->dropped)
+ continue;
+
+ if (p->current_size == UINT64_MAX)
+ activity = "create";
+ else if (p->current_size != p->new_size)
+ activity = "resize";
+
+ label = partition_label(p);
+ partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL;
+
+ r = format_size_change(p->current_size, p->new_size, &size_change);
+ if (r < 0)
+ return r;
+
+ r = format_size_change(p->current_padding, p->new_padding, &padding_change);
+ if (r < 0)
+ return r;
+
+ if (p->new_size != UINT64_MAX)
+ sum_size += p->new_size;
+ if (p->new_padding != UINT64_MAX)
+ sum_padding += p->new_padding;
+
+ if (p->verity != VERITY_OFF) {
+ Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH];
+
+ rh = iovec_is_set(&hp->roothash) ? hexmem(hp->roothash.iov_base, hp->roothash.iov_len) : strdup("TBD");
+ if (!rh)
+ return log_oom();
+ }
+
+ r = table_add_many(
+ t,
+ TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer),
+ TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(),
+ TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid,
+ TABLE_UINT64, p->partno,
+ TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(),
+ TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(),
+ TABLE_UINT64, p->offset,
+ TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size,
+ TABLE_UINT64, p->new_size,
+ TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL,
+ TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding,
+ TABLE_UINT64, p->new_padding,
+ TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL,
+ TABLE_STRING, activity ?: "unchanged",
+ TABLE_STRING, rh,
+ TABLE_STRV, p->drop_in_files,
+ TABLE_STRING, empty_to_null(p->split_path) ?: "-");
+ if (r < 0)
+ return table_log_add_error(r);
+
+ has_roothash = has_roothash || !isempty(rh);
+ has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files);
+ has_split_path = has_split_path || !isempty(p->split_path);
+ }
+
+ if (!sd_json_format_enabled(arg_json_format_flags) && (sum_padding > 0 || sum_size > 0)) {
+ const char *a, *b;
+
+ a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size));
+ b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding));
+
+ r = table_add_many(
+ t,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_STRING, a,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_STRING, b,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY,
+ TABLE_EMPTY);
+ if (r < 0)
+ return table_log_add_error(r);
+ }
+
+ if (!has_roothash) {
+ r = table_hide_column_from_display(t, roothash_col);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set columns to display: %m");
+ }
+
+ if (!has_dropin_files) {
+ r = table_hide_column_from_display(t, dropin_files_col);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set columns to display: %m");
+ }
+
+ if (!has_split_path) {
+ r = table_hide_column_from_display(t, split_path_col);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set columns to display: %m");
+ }
+
+ return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend);
+}
+
+static int context_bar_char_process_partition(
+ Context *context,
+ Partition *bar[],
+ size_t n,
+ Partition *p,
+ size_t **start_array,
+ size_t *n_start_array) {
+
+ uint64_t from, to, total;
+ size_t x, y;
+
+ assert(context);
+ assert(bar);
+ assert(n > 0);
+ assert(p);
+ assert(start_array);
+ assert(n_start_array);
+
+ if (p->dropped)
+ return 0;
+
+ assert(p->offset != UINT64_MAX);
+ assert(p->new_size != UINT64_MAX);
+
+ from = p->offset;
+ to = from + p->new_size;
+
+ assert(context->total > 0);
+ total = context->total;
+
+ assert(from <= total);
+ x = from * n / total;
+
+ assert(to <= total);
+ y = to * n / total;
+
+ assert(x <= y);
+ assert(y <= n);
+
+ for (size_t i = x; i < y; i++)
+ bar[i] = p;
+
+ if (!GREEDY_REALLOC_APPEND(*start_array, *n_start_array, &x, 1))
+ return log_oom();
+
+ return 1;
+}
+
+static int partition_hint(const Partition *p, const char *node, char **ret) {
+ _cleanup_free_ char *buf = NULL;
+ const char *label;
+ sd_id128_t id;
+
+ /* Tries really hard to find a suitable description for this partition */
+
+ if (p->definition_path)
+ return path_extract_filename(p->definition_path, ret);
+
+ label = partition_label(p);
+ if (!isempty(label)) {
+ buf = strdup(label);
+ goto done;
+ }
+
+ if (p->partno != UINT64_MAX) {
+ buf = fdisk_partname(node, p->partno+1);
+ goto done;
+ }
+
+ if (p->new_uuid_is_set)
+ id = p->new_uuid;
+ else if (!sd_id128_is_null(p->current_uuid))
+ id = p->current_uuid;
+ else
+ id = p->type.uuid;
+
+ buf = strdup(SD_ID128_TO_UUID_STRING(id));
+
+done:
+ if (!buf)
+ return -ENOMEM;
+
+ *ret = TAKE_PTR(buf);
+ return 0;
+}
+
+static int context_dump_partition_bar(Context *context) {
+ _cleanup_free_ Partition **bar = NULL;
+ _cleanup_free_ size_t *start_array = NULL;
+ size_t n_start_array = 0;
+ Partition *last = NULL;
+ bool z = false;
+ size_t c, j = 0;
+ int r;
+
+ assert_se((c = columns()) >= 2);
+ c -= 2; /* We do not use the leftmost and rightmost character cell */
+
+ bar = new0(Partition*, c);
+ if (!bar)
+ return log_oom();
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ r = context_bar_char_process_partition(context, bar, c, p, &start_array, &n_start_array);
+ if (r < 0)
+ return r;
+ }
+
+ putc(' ', stdout);
+
+ for (size_t i = 0; i < c; i++) {
+ if (bar[i]) {
+ if (last != bar[i])
+ z = !z;
+
+ fputs(z ? ansi_green() : ansi_yellow(), stdout);
+ fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout);
+ } else {
+ fputs(ansi_normal(), stdout);
+ fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout);
+ }
+
+ last = bar[i];
+ }
+
+ fputs(ansi_normal(), stdout);
+ putc('\n', stdout);
+
+ for (size_t i = 0; i < n_start_array; i++) {
+ _cleanup_free_ char **line = NULL;
+
+ line = new0(char*, c);
+ if (!line)
+ return log_oom();
+
+ j = 0;
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *d = NULL;
+
+ if (p->dropped)
+ continue;
+
+ j++;
+
+ if (i < n_start_array - j) {
+
+ if (line[start_array[j-1]]) {
+ const char *e;
+
+ /* Upgrade final corner to the right with a branch to the right */
+ e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT));
+ if (e) {
+ d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e);
+ if (!d)
+ return log_oom();
+ }
+ }
+
+ if (!d) {
+ d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL));
+ if (!d)
+ return log_oom();
+ }
+
+ } else if (i == n_start_array - j) {
+ _cleanup_free_ char *hint = NULL;
+
+ (void) partition_hint(p, context->node, &hint);
+
+ if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)))
+ d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint));
+ else
+ d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint));
+
+ if (!d)
+ return log_oom();
+ }
+
+ if (d)
+ free_and_replace(line[start_array[j-1]], d);
+ }
+
+ putc(' ', stdout);
+
+ j = 0;
+ while (j < c) {
+ if (line[j]) {
+ fputs(line[j], stdout);
+ j += utf8_console_width(line[j]);
+ } else {
+ putc(' ', stdout);
+ j++;
+ }
+ }
+
+ putc('\n', stdout);
+
+ for (j = 0; j < c; j++)
+ free(line[j]);
+ }
+
+ return 0;
+}
+
+static bool context_has_roothash(Context *context) {
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (iovec_is_set(&p->roothash))
+ return true;
+
+ return false;
+}
+
+static int context_dump(Context *context, bool late) {
+ int r;
+
+ assert(context);
+
+ if (arg_pretty == 0 && !sd_json_format_enabled(arg_json_format_flags))
+ return 0;
+
+ /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes
+ * in the output. */
+ if (!late && sd_json_format_enabled(arg_json_format_flags))
+ return 0;
+
+ /* If we're not outputting JSON, only dump again after doing all operations if there are any
+ * roothashes that we need to communicate to the user. */
+ if (late && !sd_json_format_enabled(arg_json_format_flags) && !context_has_roothash(context))
+ return 0;
+
+ r = context_dump_partitions(context);
+ if (r < 0)
+ return r;
+
+ /* Only write the partition bar once, even if we're writing the partition table twice to communicate
+ * roothashes. */
+ if (!sd_json_format_enabled(arg_json_format_flags) && !late) {
+ putc('\n', stdout);
+
+ r = context_dump_partition_bar(context);
+ if (r < 0)
+ return r;
+
+ putc('\n', stdout);
+ }
+
+ fflush(stdout);
+
+ return 0;
+}
+
+static bool context_changed(const Context *context) {
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->dropped)
+ continue;
+
+ if (p->allocated_to_area)
+ return true;
+
+ if (p->new_size != p->current_size)
+ return true;
+ }
+
+ return false;
+}
+
+static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) {
+ _cleanup_(blkid_free_probep) blkid_probe probe = NULL;
+ int r;
+
+ assert(context);
+ assert(offset != UINT64_MAX);
+ assert(size != UINT64_MAX);
+
+ probe = blkid_new_probe();
+ if (!probe)
+ return log_oom();
+
+ errno = 0;
+ r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size);
+ if (r < 0)
+ return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping.");
+
+ errno = 0;
+ if (blkid_probe_enable_superblocks(probe, true) < 0 ||
+ blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 ||
+ blkid_probe_enable_partitions(probe, true) < 0 ||
+ blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0)
+ return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing.");
+
+ for (;;) {
+ errno = 0;
+ r = blkid_do_probe(probe);
+ if (r < 0)
+ return log_error_errno(errno_or_else(EIO), "Failed to probe for file systems.");
+ if (r > 0)
+ break;
+
+ errno = 0;
+ if (blkid_do_wipe(probe, false) < 0)
+ return log_error_errno(errno_or_else(EIO), "Failed to wipe file system signature.");
+ }
+
+ return 0;
+}
+
+static int context_wipe_partition(Context *context, Partition *p) {
+ int r;
+
+ assert(context);
+ assert(p);
+ assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */
+
+ assert(p->offset != UINT64_MAX);
+ assert(p->new_size != UINT64_MAX);
+
+ r = context_wipe_range(context, p->offset, p->new_size);
+ if (r < 0)
+ return r;
+
+ log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno);
+ return 0;
+}
+
+static int context_discard_range(
+ Context *context,
+ uint64_t offset,
+ uint64_t size) {
+
+ struct stat st;
+ int fd;
+
+ assert(context);
+ assert(offset != UINT64_MAX);
+ assert(size != UINT64_MAX);
+
+ if (size <= 0)
+ return 0;
+
+ assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
+
+ if (fstat(fd, &st) < 0)
+ return -errno;
+
+ if (S_ISREG(st.st_mode)) {
+ if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) {
+ if (ERRNO_IS_NOT_SUPPORTED(errno))
+ return -EOPNOTSUPP;
+
+ return -errno;
+ }
+
+ return 1;
+ }
+
+ if (S_ISBLK(st.st_mode)) {
+ uint64_t range[2], end;
+
+ range[0] = round_up_size(offset, context->sector_size);
+
+ if (offset > UINT64_MAX - size)
+ return -ERANGE;
+
+ end = offset + size;
+ if (end <= range[0])
+ return 0;
+
+ range[1] = round_down_size(end - range[0], context->sector_size);
+ if (range[1] <= 0)
+ return 0;
+
+ if (ioctl(fd, BLKDISCARD, range) < 0) {
+ if (ERRNO_IS_NOT_SUPPORTED(errno))
+ return -EOPNOTSUPP;
+
+ return -errno;
+ }
+
+ return 1;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int context_discard_partition(Context *context, Partition *p) {
+ int r;
+
+ assert(context);
+ assert(p);
+
+ assert(p->offset != UINT64_MAX);
+ assert(p->new_size != UINT64_MAX);
+ assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */
+
+ if (!arg_discard)
+ return 0;
+
+ r = context_discard_range(context, p->offset, p->new_size);
+ if (r == -EOPNOTSUPP) {
+ log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno);
+ return 0;
+ }
+ if (r == -EBUSY) {
+ /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */
+ log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno);
+ return 0;
+ }
+ if (r == 0) {
+ log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno);
+ return 0;
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno);
+
+ log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno);
+ return 1;
+}
+
+static int context_discard_gap_after(Context *context, Partition *p) {
+ uint64_t gap, next = UINT64_MAX;
+ int r;
+
+ assert(context);
+ assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX));
+
+ if (!arg_discard)
+ return 0;
+
+ if (p)
+ gap = p->offset + p->new_size;
+ else
+ /* The context start gets rounded up to grain_size, however
+ * existing partitions may be before that so ensure the gap
+ * starts at the first actually usable lba
+ */
+ gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size;
+
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (q->dropped)
+ continue;
+
+ assert(q->offset != UINT64_MAX);
+ assert(q->new_size != UINT64_MAX);
+
+ if (q->offset < gap)
+ continue;
+
+ if (next == UINT64_MAX || q->offset < next)
+ next = q->offset;
+ }
+
+ if (next == UINT64_MAX) {
+ next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size;
+ if (gap > next)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end.");
+ }
+
+ assert(next >= gap);
+ r = context_discard_range(context, gap, next - gap);
+ if (r == -EOPNOTSUPP) {
+ if (p)
+ log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno);
+ else
+ log_info("Storage does not support discard, not discarding gap at beginning of disk.");
+ return 0;
+ }
+ if (r == 0) /* Too short */
+ return 0;
+ if (r < 0) {
+ if (p)
+ return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno);
+ else
+ return log_error_errno(r, "Failed to discard gap at beginning of disk.");
+ }
+
+ if (p)
+ log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno);
+ else
+ log_info("Successfully discarded gap at beginning of disk.");
+
+ return 0;
+}
+
+static int context_wipe_and_discard(Context *context) {
+ int r;
+
+ assert(context);
+
+ if (arg_empty == EMPTY_CREATE) /* If we just created the image, no need to wipe */
+ return 0;
+
+ /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if
+ * we were supposed to start from scratch anyway, as in that case we just discard the whole block
+ * device in one go early on. */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+
+ if (!p->allocated_to_area)
+ continue;
+
+ if (partition_type_defer(&p->type))
+ continue;
+
+ r = context_wipe_partition(context, p);
+ if (r < 0)
+ return r;
+
+ if (!context->from_scratch) {
+ r = context_discard_partition(context, p);
+ if (r < 0)
+ return r;
+
+ r = context_discard_gap_after(context, p);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if (!context->from_scratch) {
+ r = context_discard_gap_after(context, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+typedef struct DecryptedPartitionTarget {
+ int fd;
+ char *dm_name;
+ char *volume;
+ struct crypt_device *device;
+} DecryptedPartitionTarget;
+
+static DecryptedPartitionTarget* decrypted_partition_target_free(DecryptedPartitionTarget *t) {
+#if HAVE_LIBCRYPTSETUP
+ int r;
+
+ if (!t)
+ return NULL;
+
+ safe_close(t->fd);
+
+ /* udev or so might access out block device in the background while we are done. Let's hence
+ * force detach the volume. We sync'ed before, hence this should be safe. */
+ r = sym_crypt_deactivate_by_name(t->device, t->dm_name, CRYPT_DEACTIVATE_FORCE);
+ if (r < 0)
+ log_warning_errno(r, "Failed to deactivate LUKS device, ignoring: %m");
+
+ sym_crypt_free(t->device);
+ free(t->dm_name);
+ free(t->volume);
+ free(t);
+#endif
+ return NULL;
+}
+
+typedef struct {
+ LoopDevice *loop;
+ int fd;
+ char *path;
+ int whole_fd;
+ DecryptedPartitionTarget *decrypted;
+} PartitionTarget;
+
+static int partition_target_fd(PartitionTarget *t) {
+ assert(t);
+ assert(t->loop || t->fd >= 0 || t->whole_fd >= 0);
+
+ if (t->decrypted)
+ return t->decrypted->fd;
+
+ if (t->loop)
+ return t->loop->fd;
+
+ if (t->fd >= 0)
+ return t->fd;
+
+ return t->whole_fd;
+}
+
+static const char* partition_target_path(PartitionTarget *t) {
+ assert(t);
+ assert(t->loop || t->path);
+
+ if (t->decrypted)
+ return t->decrypted->volume;
+
+ if (t->loop)
+ return t->loop->node;
+
+ return t->path;
+}
+
+static PartitionTarget* partition_target_free(PartitionTarget *t) {
+ if (!t)
+ return NULL;
+
+ decrypted_partition_target_free(t->decrypted);
+ loop_device_unref(t->loop);
+ safe_close(t->fd);
+ unlink_and_free(t->path);
+
+ return mfree(t);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free);
+
+static int prepare_temporary_file(Context *context, PartitionTarget *t, uint64_t size) {
+ _cleanup_(unlink_and_freep) char *temp = NULL;
+ _cleanup_close_ int fd = -EBADF;
+ const char *vt;
+ unsigned attrs = 0;
+ int r;
+
+ assert(context);
+ assert(t);
+
+ r = var_tmp_dir(&vt);
+ if (r < 0)
+ return log_error_errno(r, "Could not determine temporary directory: %m");
+
+ temp = path_join(vt, "repart-XXXXXX");
+ if (!temp)
+ return log_oom();
+
+ fd = mkostemp_safe(temp);
+ if (fd < 0)
+ return log_error_errno(fd, "Failed to create temporary file: %m");
+
+ r = read_attr_fd(fdisk_get_devfd(context->fdisk_context), &attrs);
+ if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
+ return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
+
+ if (FLAGS_SET(attrs, FS_NOCOW_FL)) {
+ r = chattr_fd(fd, FS_NOCOW_FL, FS_NOCOW_FL, NULL);
+ if (r < 0 && !ERRNO_IS_NOT_SUPPORTED(r))
+ return log_error_errno(r, "Failed to disable copy-on-write on %s: %m", temp);
+ }
+
+ if (ftruncate(fd, size) < 0)
+ return log_error_errno(errno, "Failed to truncate temporary file to %s: %m",
+ FORMAT_BYTES(size));
+
+ t->fd = TAKE_FD(fd);
+ t->path = TAKE_PTR(temp);
+
+ return 0;
+}
+
+static bool loop_device_error_is_fatal(const Partition *p, int r) {
+ assert(p);
+ return arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) || !ordered_hashmap_isempty(p->subvolumes) || p->default_subvolume;
+}
+
+static int partition_target_prepare(
+ Context *context,
+ Partition *p,
+ uint64_t size,
+ bool need_path,
+ PartitionTarget **ret) {
+
+ _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
+ _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
+ int whole_fd, r;
+
+ assert(context);
+ assert(p);
+ assert(ret);
+
+ assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
+
+ t = new(PartitionTarget, 1);
+ if (!t)
+ return log_oom();
+ *t = (PartitionTarget) {
+ .fd = -EBADF,
+ .whole_fd = -EBADF,
+ };
+
+ if (!need_path) {
+ if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to partition offset: %m");
+
+ t->whole_fd = whole_fd;
+ *ret = TAKE_PTR(t);
+ return 0;
+ }
+
+ /* Loopback block devices are not only useful to turn regular files into block devices, but
+ * also to cut out sections of block devices into new block devices. */
+
+ if (arg_offline <= 0) {
+ r = loop_device_make(whole_fd, O_RDWR, p->offset, size, context->sector_size, 0, LOCK_EX, &d);
+ if (r < 0 && loop_device_error_is_fatal(p, r))
+ return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno);
+ if (r >= 0) {
+ t->loop = TAKE_PTR(d);
+ *ret = TAKE_PTR(t);
+ return 0;
+ }
+
+ log_debug_errno(r, "No access to loop devices, falling back to a regular file");
+ }
+
+ /* If we can't allocate a loop device, let's write to a regular file that we copy into the final
+ * image so we can run in containers and without needing root privileges. On filesystems with
+ * reflinking support, we can take advantage of this and just reflink the result into the image.
+ */
+
+ r = prepare_temporary_file(context, t, size);
+ if (r < 0)
+ return r;
+
+ *ret = TAKE_PTR(t);
+
+ return 0;
+}
+
+static int partition_target_grow(PartitionTarget *t, uint64_t size) {
+ int r;
+
+ assert(t);
+ assert(!t->decrypted);
+
+ if (t->loop) {
+ r = loop_device_refresh_size(t->loop, UINT64_MAX, size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to refresh loopback device size: %m");
+ } else if (t->fd >= 0) {
+ if (ftruncate(t->fd, size) < 0)
+ return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m",
+ t->path, FORMAT_BYTES(size));
+ }
+
+ return 0;
+}
+
+static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) {
+ int whole_fd, r;
+
+ assert(context);
+ assert(p);
+ assert(t);
+
+ assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
+
+ log_info("Syncing future partition %"PRIu64" contents to disk.", p->partno);
+
+ if (t->decrypted && fsync(t->decrypted->fd) < 0)
+ return log_error_errno(errno, "Failed to sync changes to '%s': %m", t->decrypted->volume);
+
+ if (t->loop) {
+ r = loop_device_sync(t->loop);
+ if (r < 0)
+ return log_error_errno(r, "Failed to sync loopback device: %m");
+ } else if (t->fd >= 0) {
+ struct stat st;
+
+ if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to partition offset: %m");
+
+ if (lseek(t->fd, 0, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to start of temporary file: %m");
+
+ if (fstat(t->fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat temporary file: %m");
+
+ if (st.st_size > (off_t) p->new_size)
+ return log_error_errno(SYNTHETIC_ERRNO(ENOSPC),
+ "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s).",
+ p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size));
+
+ r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy bytes to partition: %m");
+ } else {
+ if (fsync(t->whole_fd) < 0)
+ return log_error_errno(errno, "Failed to sync changes: %m");
+ }
+
+ return 0;
+}
+
+static int partition_encrypt(Context *context, Partition *p, PartitionTarget *target, bool offline) {
+#if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && (HAVE_CRYPT_REENCRYPT_RUN || HAVE_CRYPT_REENCRYPT)
+ const char *node = partition_target_path(target);
+ struct crypt_params_luks2 luks_params = {
+ .label = strempty(ASSERT_PTR(p)->new_label),
+ .sector_size = ASSERT_PTR(context)->fs_sector_size,
+ .data_device = offline ? node : NULL,
+ };
+ struct crypt_params_reencrypt reencrypt_params = {
+ .mode = CRYPT_REENCRYPT_ENCRYPT,
+ .direction = CRYPT_REENCRYPT_BACKWARD,
+ .resilience = "datashift",
+ .data_shift = LUKS2_METADATA_SIZE / 512,
+ .luks2 = &luks_params,
+ .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT,
+ };
+ _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL;
+#if HAVE_TPM2
+ _cleanup_(erase_and_freep) char *base64_encoded = NULL;
+#endif
+ _cleanup_fclose_ FILE *h = NULL;
+ _cleanup_free_ char *hp = NULL, *vol = NULL, *dm_name = NULL;
+ const char *passphrase = NULL;
+ size_t passphrase_size = 0;
+ const char *vt;
+ int r;
+
+ assert(context);
+ assert(p);
+ assert(p->encrypt != ENCRYPT_OFF);
+
+ r = dlopen_cryptsetup();
+ if (r < 0)
+ return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m");
+
+ log_info("Encrypting future partition %" PRIu64 "...", p->partno);
+
+ if (offline) {
+ r = var_tmp_dir(&vt);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine temporary files directory: %m");
+
+ r = fopen_temporary_child(vt, &h, &hp);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create temporary LUKS header file: %m");
+
+ /* Weird cryptsetup requirement which requires the header file to be the size of at least one
+ * sector. */
+ if (ftruncate(fileno(h), luks_params.sector_size) < 0)
+ return log_error_errno(errno, "Failed to grow temporary LUKS header file: %m");
+ } else {
+ if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0)
+ return log_oom();
+
+ vol = path_join("/dev/mapper/", dm_name);
+ if (!vol)
+ return log_oom();
+ }
+
+ r = sym_crypt_init(&cd, offline ? hp : node);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp);
+
+ cryptsetup_enable_logging(cd);
+
+ if (offline) {
+ /* Disable kernel keyring usage by libcryptsetup as a workaround for
+ * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can
+ * do offline encryption even when repart is running in a container. */
+ r = sym_crypt_volume_key_keyring(cd, false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to disable kernel keyring: %m");
+
+ r = sym_crypt_metadata_locking(cd, false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to disable metadata locking: %m");
+
+ r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set data offset: %m");
+ }
+
+ r = sym_crypt_format(
+ cd,
+ CRYPT_LUKS2,
+ "aes",
+ "xts-plain64",
+ SD_ID128_TO_UUID_STRING(p->luks_uuid),
+ NULL,
+ VOLUME_KEY_SIZE,
+ &luks_params);
+ if (r < 0)
+ return log_error_errno(r, "Failed to LUKS2 format future partition: %m");
+
+ if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) {
+ r = sym_crypt_keyslot_add_by_volume_key(
+ cd,
+ CRYPT_ANY_SLOT,
+ NULL,
+ VOLUME_KEY_SIZE,
+ strempty(arg_key),
+ arg_key_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add LUKS2 key: %m");
+
+ passphrase = strempty(arg_key);
+ passphrase_size = arg_key_size;
+ }
+
+ if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) {
+#if HAVE_TPM2
+ _cleanup_(iovec_done) struct iovec pubkey = {}, srk = {};
+ _cleanup_(iovec_done_erase) struct iovec secret = {};
+ _cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;
+ ssize_t base64_encoded_size;
+ int keyslot;
+ TPM2Flags flags = 0;
+
+ if (arg_tpm2_public_key_pcr_mask != 0) {
+ r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey.iov_base, &pubkey.iov_len);
+ if (r < 0) {
+ if (arg_tpm2_public_key || r != -ENOENT)
+ return log_error_errno(r, "Failed to read TPM PCR public key: %m");
+
+ log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m");
+ arg_tpm2_public_key_pcr_mask = 0;
+ }
+ }
+
+ TPM2B_PUBLIC public;
+ if (iovec_is_set(&pubkey)) {
+ r = tpm2_tpm2b_public_from_pem(pubkey.iov_base, pubkey.iov_len, &public);
+ if (r < 0)
+ return log_error_errno(r, "Could not convert public key to TPM2B_PUBLIC: %m");
+ }
+
+ _cleanup_(tpm2_pcrlock_policy_done) Tpm2PCRLockPolicy pcrlock_policy = {};
+ if (arg_tpm2_pcrlock) {
+ r = tpm2_pcrlock_policy_load(arg_tpm2_pcrlock, &pcrlock_policy);
+ if (r < 0)
+ return r;
+
+ flags |= TPM2_FLAGS_USE_PCRLOCK;
+ }
+
+ _cleanup_(tpm2_context_unrefp) Tpm2Context *tpm2_context = NULL;
+ TPM2B_PUBLIC device_key_public = {};
+ if (arg_tpm2_device_key) {
+ r = tpm2_load_public_key_file(arg_tpm2_device_key, &device_key_public);
+ if (r < 0)
+ return r;
+
+ if (!tpm2_pcr_values_has_all_values(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Must provide all PCR values when using TPM2 device key.");
+ } else {
+ r = tpm2_context_new_or_warn(arg_tpm2_device, &tpm2_context);
+ if (r < 0)
+ return r;
+
+ if (!tpm2_pcr_values_has_all_values(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values)) {
+ r = tpm2_pcr_read_missing_values(tpm2_context, arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values);
+ if (r < 0)
+ return log_error_errno(r, "Could not read pcr values: %m");
+ }
+ }
+
+ uint16_t hash_pcr_bank = 0;
+ uint32_t hash_pcr_mask = 0;
+ if (arg_tpm2_n_hash_pcr_values > 0) {
+ size_t hash_count;
+ r = tpm2_pcr_values_hash_count(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, &hash_count);
+ if (r < 0)
+ return log_error_errno(r, "Could not get hash count: %m");
+
+ if (hash_count > 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Multiple PCR banks selected.");
+
+ hash_pcr_bank = arg_tpm2_hash_pcr_values[0].hash;
+ r = tpm2_pcr_values_to_mask(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, hash_pcr_bank, &hash_pcr_mask);
+ if (r < 0)
+ return log_error_errno(r, "Could not get hash mask: %m");
+ }
+
+ TPM2B_DIGEST policy_hash[2] = {
+ TPM2B_DIGEST_MAKE(NULL, TPM2_SHA256_DIGEST_SIZE),
+ TPM2B_DIGEST_MAKE(NULL, TPM2_SHA256_DIGEST_SIZE),
+ };
+ size_t n_policy_hash = 1;
+
+ /* If both PCR public key unlock and pcrlock unlock is selected, then shard the encryption key. */
+ r = tpm2_calculate_sealing_policy(
+ arg_tpm2_hash_pcr_values,
+ arg_tpm2_n_hash_pcr_values,
+ iovec_is_set(&pubkey) ? &public : NULL,
+ /* use_pin= */ false,
+ arg_tpm2_pcrlock && !iovec_is_set(&pubkey) ? &pcrlock_policy : NULL,
+ policy_hash + 0);
+ if (r < 0)
+ return log_error_errno(r, "Could not calculate sealing policy digest for shard 0: %m");
+
+ if (arg_tpm2_pcrlock && iovec_is_set(&pubkey)) {
+ r = tpm2_calculate_sealing_policy(
+ arg_tpm2_hash_pcr_values,
+ arg_tpm2_n_hash_pcr_values,
+ /* pubkey= */ NULL, /* Turn this one off for the 2nd shard */
+ /* use_pin= */ false,
+ &pcrlock_policy, /* But turn this one on */
+ policy_hash + 1);
+ if (r < 0)
+ return log_error_errno(r, "Could not calculate sealing policy digest for shard 1: %m");
+
+ n_policy_hash++;
+ }
+
+ struct iovec *blobs = NULL;
+ size_t n_blobs = 0;
+ CLEANUP_ARRAY(blobs, n_blobs, iovec_array_free);
+
+ if (arg_tpm2_device_key) {
+ if (n_policy_hash > 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "Combined signed PCR policies and pcrlock policies cannot be calculated offline, currently.");
+
+ blobs = new0(struct iovec, 1);
+ if (!blobs)
+ return log_oom();
+
+ n_blobs = 1;
+
+ r = tpm2_calculate_seal(
+ arg_tpm2_seal_key_handle,
+ &device_key_public,
+ /* attributes= */ NULL,
+ /* secret= */ NULL,
+ policy_hash + 0,
+ /* pin= */ NULL,
+ &secret,
+ blobs + 0,
+ &srk);
+ } else
+ r = tpm2_seal(tpm2_context,
+ arg_tpm2_seal_key_handle,
+ policy_hash,
+ n_policy_hash,
+ /* pin= */ NULL,
+ &secret,
+ &blobs,
+ &n_blobs,
+ /* ret_primary_alg= */ NULL,
+ &srk);
+ if (r < 0)
+ return log_error_errno(r, "Failed to seal to TPM2: %m");
+
+ base64_encoded_size = base64mem(secret.iov_base, secret.iov_len, &base64_encoded);
+ if (base64_encoded_size < 0)
+ return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m");
+
+ r = cryptsetup_set_minimal_pbkdf(cd);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set minimal PBKDF: %m");
+
+ keyslot = sym_crypt_keyslot_add_by_volume_key(
+ cd,
+ CRYPT_ANY_SLOT,
+ /* volume_key= */ NULL,
+ /* volume_key_size= */ VOLUME_KEY_SIZE,
+ base64_encoded,
+ base64_encoded_size);
+ if (keyslot < 0)
+ return log_error_errno(keyslot, "Failed to add new TPM2 key: %m");
+
+ struct iovec policy_hash_as_iovec[2] = {
+ IOVEC_MAKE(policy_hash[0].buffer, policy_hash[0].size),
+ IOVEC_MAKE(policy_hash[1].buffer, policy_hash[1].size),
+ };
+
+ r = tpm2_make_luks2_json(
+ keyslot,
+ hash_pcr_mask,
+ hash_pcr_bank,
+ &pubkey,
+ arg_tpm2_public_key_pcr_mask,
+ /* primary_alg= */ 0,
+ blobs,
+ n_blobs,
+ policy_hash_as_iovec,
+ n_policy_hash,
+ /* salt= */ NULL, /* no salt because tpm2_seal has no pin */
+ &srk,
+ &pcrlock_policy.nv_handle,
+ flags,
+ &v);
+ if (r < 0)
+ return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m");
+
+ r = cryptsetup_add_token_json(cd, v);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m");
+
+ passphrase = base64_encoded;
+ passphrase_size = strlen(base64_encoded);
+#else
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "Support for TPM2 enrollment not enabled.");
+#endif
+ }
+
+ if (offline) {
+ r = sym_crypt_reencrypt_init_by_passphrase(
+ cd,
+ NULL,
+ passphrase,
+ passphrase_size,
+ CRYPT_ANY_SLOT,
+ 0,
+ sym_crypt_get_cipher(cd),
+ sym_crypt_get_cipher_mode(cd),
+ &reencrypt_params);
+ if (r < 0)
+ return log_error_errno(r, "Failed to prepare for reencryption: %m");
+
+ /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we
+ * have to do that ourselves. */
+
+ sym_crypt_free(cd);
+ cd = NULL;
+
+ r = sym_crypt_init(&cd, node);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node);
+
+ r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp);
+ if (r < 0)
+ return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node);
+
+ reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY;
+
+ r = sym_crypt_reencrypt_init_by_passphrase(
+ cd,
+ NULL,
+ passphrase,
+ passphrase_size,
+ CRYPT_ANY_SLOT,
+ 0,
+ NULL,
+ NULL,
+ &reencrypt_params);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load reencryption context: %m");
+
+#if HAVE_CRYPT_REENCRYPT_RUN
+ r = sym_crypt_reencrypt_run(cd, NULL, NULL);
+#else
+ r = sym_crypt_reencrypt(cd, NULL);
+#endif
+ if (r < 0)
+ return log_error_errno(r, "Failed to encrypt %s: %m", node);
+ } else {
+ _cleanup_free_ DecryptedPartitionTarget *t = NULL;
+ _cleanup_close_ int dev_fd = -1;
+
+ r = sym_crypt_activate_by_volume_key(
+ cd,
+ dm_name,
+ NULL,
+ VOLUME_KEY_SIZE,
+ (arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0) | CRYPT_ACTIVATE_PRIVATE);
+ if (r < 0)
+ return log_error_errno(r, "Failed to activate LUKS superblock: %m");
+
+ dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY);
+ if (dev_fd < 0)
+ return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol);
+
+ if (flock(dev_fd, LOCK_EX) < 0)
+ return log_error_errno(errno, "Failed to lock '%s': %m", vol);
+
+ t = new(DecryptedPartitionTarget, 1);
+ if (!t)
+ return log_oom();
+
+ *t = (DecryptedPartitionTarget) {
+ .fd = TAKE_FD(dev_fd),
+ .dm_name = TAKE_PTR(dm_name),
+ .volume = TAKE_PTR(vol),
+ .device = TAKE_PTR(cd),
+ };
+
+ target->decrypted = TAKE_PTR(t);
+ }
+
+ log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno);
+
+ return 0;
+#else
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "libcryptsetup is not supported or is missing required symbols, cannot encrypt.");
+#endif
+}
+
+static int partition_format_verity_hash(
+ Context *context,
+ Partition *p,
+ const char *node,
+ const char *data_node) {
+
+#if HAVE_LIBCRYPTSETUP
+ Partition *dp;
+ _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
+ _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL;
+ _cleanup_free_ char *hint = NULL;
+ int r;
+
+ assert(context);
+ assert(p);
+ assert(p->verity == VERITY_HASH);
+ assert(data_node);
+
+ if (p->dropped)
+ return 0;
+
+ if (PARTITION_EXISTS(p)) /* Never format existing partitions */
+ return 0;
+
+ /* Minimized partitions will use the copy blocks logic so skip those here. */
+ if (p->copy_blocks_fd >= 0)
+ return 0;
+
+ assert_se(dp = p->siblings[VERITY_DATA]);
+ assert(!dp->dropped);
+
+ (void) partition_hint(p, node, &hint);
+
+ r = dlopen_cryptsetup();
+ if (r < 0)
+ return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m");
+
+ if (!node) {
+ r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t);
+ if (r < 0)
+ return r;
+
+ node = partition_target_path(t);
+ }
+
+ r = sym_crypt_init(&cd, node);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node);
+
+ cryptsetup_enable_logging(cd);
+
+ r = sym_crypt_format(
+ cd, CRYPT_VERITY, NULL, NULL, SD_ID128_TO_UUID_STRING(p->verity_uuid), NULL, 0,
+ &(struct crypt_params_verity){
+ .data_device = data_node,
+ .flags = CRYPT_VERITY_CREATE_HASH,
+ .hash_name = "sha256",
+ .hash_type = 1,
+ .data_block_size = p->verity_data_block_size,
+ .hash_block_size = p->verity_hash_block_size,
+ .salt_size = sizeof(p->verity_salt),
+ .salt = (const char*)p->verity_salt,
+ });
+ if (r < 0) {
+ /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it
+ * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the
+ * partition is too small. */
+ if (r == -EIO && errno == ENOSPC)
+ return log_error_errno(errno,
+ "Verity hash data does not fit in partition %s with size %s",
+ strna(hint), FORMAT_BYTES(p->new_size));
+
+ return log_error_errno(r, "Failed to setup verity hash data of partition %s: %m", strna(hint));
+ }
+
+ if (t) {
+ r = partition_target_sync(context, p, t);
+ if (r < 0)
+ return r;
+ }
+
+ r = sym_crypt_get_volume_key_size(cd);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine verity root hash size of partition %s: %m", strna(hint));
+
+ _cleanup_(iovec_done) struct iovec rh = {
+ .iov_base = malloc(r),
+ .iov_len = r,
+ };
+ if (!rh.iov_base)
+ return log_oom();
+
+ r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh.iov_base, &rh.iov_len, NULL, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get verity root hash of partition %s: %m", strna(hint));
+
+ assert(rh.iov_len >= sizeof(sd_id128_t) * 2);
+
+ if (!dp->new_uuid_is_set) {
+ memcpy_safe(dp->new_uuid.bytes, rh.iov_base, sizeof(sd_id128_t));
+ dp->new_uuid_is_set = true;
+ }
+
+ if (!p->new_uuid_is_set) {
+ memcpy_safe(p->new_uuid.bytes, (uint8_t*) rh.iov_base + (rh.iov_len - sizeof(sd_id128_t)), sizeof(sd_id128_t));
+ p->new_uuid_is_set = true;
+ }
+
+ p->roothash = TAKE_STRUCT(rh);
+
+ return 0;
+#else
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes.");
+#endif
+}
+
+static int sign_verity_roothash(
+ const struct iovec *roothash,
+ X509 *certificate,
+ EVP_PKEY *private_key,
+ struct iovec *ret_signature) {
+
+#if HAVE_OPENSSL
+ _cleanup_(BIO_freep) BIO *rb = NULL;
+ _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL;
+ _cleanup_free_ char *hex = NULL;
+ _cleanup_free_ uint8_t *sig = NULL;
+ int sigsz;
+
+ assert(roothash);
+ assert(private_key);
+ assert(iovec_is_set(roothash));
+ assert(ret_signature);
+
+ hex = hexmem(roothash->iov_base, roothash->iov_len);
+ if (!hex)
+ return log_oom();
+
+ rb = BIO_new_mem_buf(hex, -1);
+ if (!rb)
+ return log_oom();
+
+ p7 = PKCS7_sign(certificate, private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY);
+ if (!p7)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+
+ sigsz = i2d_PKCS7(p7, &sig);
+ if (sigsz < 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+
+ *ret_signature = IOVEC_MAKE(TAKE_PTR(sig), sigsz);
+
+ return 0;
+#else
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "OpenSSL is not supported, cannot setup verity signature.");
+#endif
+}
+
+static int partition_format_verity_sig(Context *context, Partition *p) {
+ _cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;
+ _cleanup_(iovec_done) struct iovec sig = {};
+ _cleanup_free_ char *text = NULL, *hint = NULL;
+ Partition *hp;
+ uint8_t fp[X509_FINGERPRINT_SIZE];
+ int whole_fd, r;
+
+ assert(p->verity == VERITY_SIG);
+
+ if (p->dropped)
+ return 0;
+
+ if (PARTITION_EXISTS(p))
+ return 0;
+
+ (void) partition_hint(p, context->node, &hint);
+
+ assert_se(hp = p->siblings[VERITY_HASH]);
+ assert(!hp->dropped);
+
+ assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
+
+ r = sign_verity_roothash(&hp->roothash, context->certificate, context->private_key, &sig);
+ if (r < 0)
+ return r;
+
+ r = x509_fingerprint(context->certificate, fp);
+ if (r < 0)
+ return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m");
+
+ r = sd_json_buildo(
+ &v,
+ SD_JSON_BUILD_PAIR("rootHash", SD_JSON_BUILD_HEX(hp->roothash.iov_base, hp->roothash.iov_len)),
+ SD_JSON_BUILD_PAIR("certificateFingerprint", SD_JSON_BUILD_HEX(fp, sizeof(fp))),
+ SD_JSON_BUILD_PAIR("signature", JSON_BUILD_IOVEC_BASE64(&sig)));
+ if (r < 0)
+ return log_error_errno(r, "Failed to build verity signature JSON object: %m");
+
+ r = sd_json_variant_format(v, 0, &text);
+ if (r < 0)
+ return log_error_errno(r, "Failed to format verity signature JSON object: %m");
+
+ if (strlen(text)+1 > p->new_size)
+ return log_error_errno(SYNTHETIC_ERRNO(E2BIG), "Verity signature too long for partition.");
+
+ r = strgrowpad0(&text, p->new_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size));
+
+ if (lseek(whole_fd, p->offset, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to partition %s offset: %m", strna(hint));
+
+ r = loop_write(whole_fd, text, p->new_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write verity signature to partition %s: %m", strna(hint));
+
+ if (fsync(whole_fd) < 0)
+ return log_error_errno(errno, "Failed to synchronize partition %s: %m", strna(hint));
+
+ return 0;
+}
+
+static int progress_bytes(uint64_t n_bytes, void *userdata) {
+ Partition *p = ASSERT_PTR(userdata);
+
+ p->copy_blocks_done += n_bytes;
+
+ (void) draw_progress_barf(
+ p->copy_blocks_done >= p->copy_blocks_size ? 100.0 : /* catch division be zero */
+ 100.0 * (double) p->copy_blocks_done / (double) p->copy_blocks_size,
+ "%s %s %s %s/%s",
+ strna(p->copy_blocks_path),
+ special_glyph(SPECIAL_GLYPH_ARROW_RIGHT),
+ strna(p->definition_path),
+ FORMAT_BYTES(p->copy_blocks_done),
+ FORMAT_BYTES(p->copy_blocks_size));
+
+ return 0;
+}
+
+static int context_copy_blocks(Context *context) {
+ int r;
+
+ assert(context);
+
+ /* Copy in file systems on the block level */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
+
+ if (p->copy_blocks_fd < 0)
+ continue;
+
+ if (p->dropped)
+ continue;
+
+ if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */
+ continue;
+
+ if (partition_type_defer(&p->type))
+ continue;
+
+ assert(p->new_size != UINT64_MAX);
+
+ size_t extra = p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0;
+
+ if (p->copy_blocks_size == UINT64_MAX)
+ p->copy_blocks_size = LESS_BY(p->new_size, extra);
+
+ assert(p->new_size >= p->copy_blocks_size + extra);
+
+ usec_t start_timestamp = now(CLOCK_MONOTONIC);
+
+ r = partition_target_prepare(context, p, p->new_size,
+ /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH],
+ &t);
+ if (r < 0)
+ return r;
+
+ if (p->encrypt != ENCRYPT_OFF && t->loop) {
+ r = partition_encrypt(context, p, t, /* offline = */ false);
+ if (r < 0)
+ return r;
+ }
+
+ if (p->copy_blocks_offset == UINT64_MAX)
+ log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".",
+ p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno);
+ else {
+ log_info("Copying in '%s' @ %" PRIu64 " (%s) on block level into future partition %" PRIu64 ".",
+ p->copy_blocks_path, p->copy_blocks_offset, FORMAT_BYTES(p->copy_blocks_size), p->partno);
+
+ if (lseek(p->copy_blocks_fd, p->copy_blocks_offset, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to copy blocks offset in %s: %m", p->copy_blocks_path);
+ }
+
+ r = copy_bytes_full(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK, /* ret_remains= */ NULL, /* ret_remains_size= */ NULL, progress_bytes, p);
+ clear_progress_bar(/* prefix= */ NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path);
+
+ log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path);
+
+ if (p->encrypt != ENCRYPT_OFF && !t->loop) {
+ r = partition_encrypt(context, p, t, /* offline = */ true);
+ if (r < 0)
+ return r;
+ }
+
+ r = partition_target_sync(context, p, t);
+ if (r < 0)
+ return r;
+
+ usec_t time_spent = usec_sub_unsigned(now(CLOCK_MONOTONIC), start_timestamp);
+ if (time_spent > 250 * USEC_PER_MSEC) /* Show throughput, but not if we spent too little time on it, since it's just noise then */
+ log_info("Block level copying and synchronization of partition %" PRIu64 " complete in %s (%s/s).",
+ p->partno, FORMAT_TIMESPAN(time_spent, 0), FORMAT_BYTES((uint64_t) ((double) p->copy_blocks_size / time_spent * USEC_PER_SEC)));
+ else
+ log_info("Block level copying and synchronization of partition %" PRIu64 " complete in %s.",
+ p->partno, FORMAT_TIMESPAN(time_spent, 0));
+
+ if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) {
+ r = partition_format_verity_hash(context, p->siblings[VERITY_HASH],
+ /* node = */ NULL, partition_target_path(t));
+ if (r < 0)
+ return r;
+ }
+
+ if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) {
+ r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) {
+ _cleanup_free_ struct stat *st = NULL;
+ int r;
+
+ assert(path);
+ assert(denylist);
+
+ st = new(struct stat, 1);
+ if (!st)
+ return log_oom();
+
+ r = chase_and_stat(path, arg_copy_source, CHASE_PREFIX_ROOT, NULL, st);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), path);
+
+ r = hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type));
+ if (r == -EEXIST)
+ return 0;
+ if (r < 0)
+ return log_oom();
+ if (r > 0)
+ TAKE_PTR(st);
+
+ return 0;
+}
+
+static int shallow_join_strv(char ***ret, char **a, char **b) {
+ _cleanup_free_ char **joined = NULL;
+ char **iter;
+
+ assert(ret);
+
+ joined = new(char*, strv_length(a) + strv_length(b) + 1);
+ if (!joined)
+ return log_oom();
+
+ iter = joined;
+
+ STRV_FOREACH(i, a)
+ *(iter++) = *i;
+
+ STRV_FOREACH(i, b)
+ if (!strv_contains(joined, *i))
+ *(iter++) = *i;
+
+ *iter = NULL;
+
+ *ret = TAKE_PTR(joined);
+ return 0;
+}
+
+static int make_copy_files_denylist(
+ Context *context,
+ const Partition *p,
+ const char *source,
+ const char *target,
+ Hashmap **ret) {
+
+ _cleanup_hashmap_free_ Hashmap *denylist = NULL;
+ _cleanup_free_ char **override_exclude_src = NULL, **override_exclude_tgt = NULL;
+ int r;
+
+ assert(context);
+ assert(p);
+ assert(source);
+ assert(target);
+ assert(ret);
+
+ /* Always exclude the top level APIVFS and temporary directories since the contents of these
+ * directories are almost certainly not intended to end up in an image. */
+
+ NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) {
+ r = add_exclude_path(s, &denylist, DENY_CONTENTS);
+ if (r < 0)
+ return r;
+ }
+
+ /* Add the user configured excludes. */
+
+ if (p->suppressing) {
+ r = shallow_join_strv(&override_exclude_src,
+ p->exclude_files_source,
+ p->suppressing->exclude_files_source);
+ if (r < 0)
+ return r;
+ r = shallow_join_strv(&override_exclude_tgt,
+ p->exclude_files_target,
+ p->suppressing->exclude_files_target);
+ if (r < 0)
+ return r;
+ }
+
+ STRV_FOREACH(e, override_exclude_src ?: p->exclude_files_source) {
+ if (path_startswith(source, *e))
+ return 1;
+
+ r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE);
+ if (r < 0)
+ return r;
+ }
+
+ STRV_FOREACH(e, override_exclude_tgt ?: p->exclude_files_target) {
+ _cleanup_free_ char *path = NULL;
+
+ if (path_startswith(target, *e))
+ return 1;
+
+ const char *s = path_startswith(*e, target);
+ if (!s)
+ continue;
+
+ path = path_join(source, s);
+ if (!path)
+ return log_oom();
+
+ r = add_exclude_path(path, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE);
+ if (r < 0)
+ return r;
+ }
+
+ /* If we're populating a root partition, we don't want any files to end up under the APIVFS mount
+ * points. While we already exclude <source>/proc, users could still do something such as
+ * "CopyFiles=/abc:/". Now, if /abc has a proc subdirectory with files in it, those will end up in
+ * the top level proc directory in the root partition, which we want to avoid. To deal with these
+ * cases, whenever we're populating a root partition and the target of CopyFiles= is the root
+ * directory of the root partition, we exclude all directories under the source that are named after
+ * APIVFS directories or named after mount points of other partitions that are also going to be part
+ * of the image. */
+
+ if (p->type.designator == PARTITION_ROOT && empty_or_root(target)) {
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (q->type.designator == PARTITION_ROOT)
+ continue;
+
+ const char *sources = gpt_partition_type_mountpoint_nulstr(q->type);
+ if (!sources)
+ continue;
+
+ NULSTR_FOREACH(s, sources) {
+ _cleanup_free_ char *path = NULL;
+
+ /* Exclude only the children of partition mount points so that the nested
+ * partition mount point itself still ends up in the upper partition. */
+
+ path = path_join(source, s);
+ if (!path)
+ return -ENOMEM;
+
+ r = add_exclude_path(path, &denylist, DENY_CONTENTS);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) {
+ _cleanup_free_ char *path = NULL;
+
+ path = path_join(source, s);
+ if (!path)
+ return -ENOMEM;
+
+ r = add_exclude_path(path, &denylist, DENY_CONTENTS);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ *ret = TAKE_PTR(denylist);
+ return 0;
+}
+
+static int add_subvolume_path(const char *path, Set **subvolumes) {
+ _cleanup_free_ struct stat *st = NULL;
+ int r;
+
+ assert(path);
+ assert(subvolumes);
+
+ st = new(struct stat, 1);
+ if (!st)
+ return log_oom();
+
+ r = chase_and_stat(path, arg_copy_source, CHASE_PREFIX_ROOT, NULL, st);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), path);
+
+ r = set_ensure_consume(subvolumes, &inode_hash_ops, TAKE_PTR(st));
+ if (r < 0)
+ return log_oom();
+
+ return 0;
+}
+
+static int make_subvolumes_strv(const Partition *p, char ***ret) {
+ _cleanup_strv_free_ char **subvolumes = NULL;
+ Subvolume *subvolume;
+ int r;
+
+ assert(p);
+ assert(ret);
+
+ ORDERED_HASHMAP_FOREACH(subvolume, p->subvolumes)
+ if (strv_extend(&subvolumes, subvolume->path) < 0)
+ return log_oom();
+
+ if (p->suppressing) {
+ char **suppressing;
+
+ r = make_subvolumes_strv(p->suppressing, &suppressing);
+ if (r < 0)
+ return r;
+
+ r = strv_extend_strv_consume(&subvolumes, suppressing, /* filter_duplicates= */ true);
+ if (r < 0)
+ return log_oom();
+ }
+
+ *ret = TAKE_PTR(subvolumes);
+ return 0;
+}
+
+static int make_subvolumes_set(
+ const Partition *p,
+ const char *source,
+ const char *target,
+ Set **ret) {
+
+ _cleanup_strv_free_ char **paths = NULL;
+ _cleanup_set_free_ Set *subvolumes = NULL;
+ int r;
+
+ assert(p);
+ assert(target);
+ assert(ret);
+
+ r = make_subvolumes_strv(p, &paths);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(subvolume, paths) {
+ _cleanup_free_ char *path = NULL;
+
+ const char *s = path_startswith(*subvolume, target);
+ if (!s)
+ continue;
+
+ path = path_join(source, s);
+ if (!path)
+ return log_oom();
+
+ r = add_subvolume_path(path, &subvolumes);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = TAKE_PTR(subvolumes);
+ return 0;
+}
+
+static usec_t epoch_or_infinity(void) {
+ static usec_t cache;
+ static bool cached = false;
+ uint64_t epoch;
+ int r;
+
+ if (cached)
+ return cache;
+
+ r = secure_getenv_uint64("SOURCE_DATE_EPOCH", &epoch);
+ if (r >= 0) {
+ if (epoch <= UINT64_MAX / USEC_PER_SEC) { /* Overflow check */
+ cached = true;
+ return (cache = epoch * USEC_PER_SEC);
+ }
+ r = -ERANGE;
+ }
+ if (r != -ENXIO)
+ log_debug_errno(r, "Failed to parse $SOURCE_DATE_EPOCH, ignoring: %m");
+
+ cached = true;
+ return (cache = USEC_INFINITY);
+}
+
+static int file_is_denylisted(const char *source, Hashmap *denylist) {
+ _cleanup_close_ int pfd = -EBADF;
+ struct stat st, rst;
+ int r;
+
+ r = chase_and_stat(source, arg_copy_source, CHASE_PREFIX_ROOT, /*ret_path=*/ NULL, &st);
+ if (r < 0)
+ return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_copy_source), source);
+
+ if (PTR_TO_INT(hashmap_get(denylist, &st)) == DENY_INODE)
+ return 1;
+
+ if (stat(empty_to_root(arg_copy_source), &rst) < 0)
+ return log_error_errno(errno, "Failed to stat '%s': %m", empty_to_root(arg_copy_source));
+
+ pfd = chase_and_open_parent(source, arg_copy_source, CHASE_PREFIX_ROOT, /*ret_filename=*/ NULL);
+ if (pfd < 0)
+ return log_error_errno(pfd, "Failed to chase '%s/%s': %m", strempty(arg_copy_source), source);
+
+ for (;;) {
+ if (fstat(pfd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat parent: %m");
+
+ if (PTR_TO_INT(hashmap_get(denylist, &st)) != DENY_DONT)
+ return 1;
+
+ if (stat_inode_same(&st, &rst))
+ break;
+
+ _cleanup_close_ int new_pfd = openat(pfd, "..", O_DIRECTORY|O_RDONLY);
+ if (new_pfd < 0)
+ return log_error_errno(errno, "Failed to open parent directory: %m");
+
+ close_and_replace(pfd, new_pfd);
+ }
+
+ return 0;
+}
+
+static int do_copy_files(Context *context, Partition *p, const char *root) {
+ _cleanup_strv_free_ char **subvolumes = NULL;
+ _cleanup_free_ char **override_copy_files = NULL;
+ int r;
+
+ assert(p);
+ assert(root);
+
+ r = make_subvolumes_strv(p, &subvolumes);
+ if (r < 0)
+ return r;
+
+ if (p->suppressing) {
+ r = shallow_join_strv(&override_copy_files, p->copy_files, p->suppressing->copy_files);
+ if (r < 0)
+ return r;
+ }
+
+ /* copy_tree_at() automatically copies the permissions of source directories to target directories if
+ * it created them. However, the root directory is created by us, so we have to manually take care
+ * that it is initialized. We use the first source directory targeting "/" as the metadata source for
+ * the root directory. */
+ STRV_FOREACH_PAIR(source, target, override_copy_files ?: p->copy_files) {
+ _cleanup_close_ int rfd = -EBADF, sfd = -EBADF;
+
+ if (!path_equal(*target, "/"))
+ continue;
+
+ rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ if (rfd < 0)
+ return -errno;
+
+ sfd = chase_and_open(*source, arg_copy_source, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL);
+ if (sfd == -ENOTDIR)
+ continue;
+ if (sfd < 0)
+ return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_copy_source), *source);
+
+ (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS);
+ (void) copy_access(sfd, rfd);
+ (void) copy_times(sfd, rfd, 0);
+
+ break;
+ }
+
+ STRV_FOREACH_PAIR(source, target, override_copy_files ?: p->copy_files) {
+ _cleanup_hashmap_free_ Hashmap *denylist = NULL;
+ _cleanup_set_free_ Set *subvolumes_by_source_inode = NULL;
+ _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF;
+ usec_t ts = epoch_or_infinity();
+
+ r = make_copy_files_denylist(context, p, *source, *target, &denylist);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ continue;
+
+ r = make_subvolumes_set(p, *source, *target, &subvolumes_by_source_inode);
+ if (r < 0)
+ return r;
+
+ sfd = chase_and_open(*source, arg_copy_source, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL);
+ if (sfd == -ENOENT) {
+ log_notice_errno(sfd, "Failed to open source file '%s%s', skipping: %m", strempty(arg_copy_source), *source);
+ continue;
+ }
+ if (sfd < 0)
+ return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_copy_source), *source);
+
+ r = fd_verify_regular(sfd);
+ if (r < 0) {
+ if (r != -EISDIR)
+ return log_error_errno(r, "Failed to check type of source file '%s': %m", *source);
+
+ /* We are looking at a directory */
+ tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
+ if (tfd < 0) {
+ _cleanup_free_ char *dn = NULL, *fn = NULL;
+
+ if (tfd != -ENOENT)
+ return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target);
+
+ r = path_extract_filename(*target, &fn);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract filename from '%s': %m", *target);
+
+ r = path_extract_directory(*target, &dn);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract directory from '%s': %m", *target);
+
+ r = mkdir_p_root_full(root, dn, UID_INVALID, GID_INVALID, 0755, ts, subvolumes);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create parent directory '%s': %m", dn);
+
+ pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
+ if (pfd < 0)
+ return log_error_errno(pfd, "Failed to open parent directory of target: %m");
+
+ r = copy_tree_at(
+ sfd, ".",
+ pfd, fn,
+ UID_INVALID, GID_INVALID,
+ COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE|COPY_RESTORE_DIRECTORY_TIMESTAMPS,
+ denylist, subvolumes_by_source_inode);
+ } else
+ r = copy_tree_at(
+ sfd, ".",
+ tfd, ".",
+ UID_INVALID, GID_INVALID,
+ COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE|COPY_RESTORE_DIRECTORY_TIMESTAMPS,
+ denylist, subvolumes_by_source_inode);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m",
+ strempty(arg_copy_source), *source, strempty(root), *target);
+ } else {
+ _cleanup_free_ char *dn = NULL, *fn = NULL;
+
+ /* We are looking at a regular file */
+
+ r = file_is_denylisted(*source, denylist);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ log_debug("%s is in the denylist, ignoring", *source);
+ continue;
+ }
+
+ r = path_extract_filename(*target, &fn);
+ if (r == -EADDRNOTAVAIL || r == O_DIRECTORY)
+ return log_error_errno(SYNTHETIC_ERRNO(EISDIR),
+ "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract filename from '%s': %m", *target);
+
+ r = path_extract_directory(*target, &dn);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract directory from '%s': %m", *target);
+
+ r = mkdir_p_root_full(root, dn, UID_INVALID, GID_INVALID, 0755, ts, subvolumes);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create parent directory: %m");
+
+ pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL);
+ if (pfd < 0)
+ return log_error_errno(pfd, "Failed to open parent directory of target: %m");
+
+ tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700);
+ if (tfd < 0)
+ return log_error_errno(errno, "Failed to create target file '%s': %m", *target);
+
+ r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT|COPY_TRUNCATE);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_copy_source), *target);
+
+ (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS);
+ (void) copy_access(sfd, tfd);
+ (void) copy_times(sfd, tfd, 0);
+
+ if (ts != USEC_INFINITY) {
+ struct timespec tspec;
+ timespec_store(&tspec, ts);
+
+ if (futimens(pfd, (const struct timespec[2]) { TIMESPEC_OMIT, tspec }) < 0)
+ return -errno;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int do_make_directories(Partition *p, const char *root) {
+ _cleanup_strv_free_ char **subvolumes = NULL;
+ _cleanup_free_ char **override_dirs = NULL;
+ int r;
+
+ assert(p);
+ assert(root);
+
+ r = make_subvolumes_strv(p, &subvolumes);
+ if (r < 0)
+ return r;
+
+ if (p->suppressing) {
+ r = shallow_join_strv(&override_dirs, p->make_directories, p->suppressing->make_directories);
+ if (r < 0)
+ return r;
+ }
+
+ STRV_FOREACH(d, override_dirs ?: p->make_directories) {
+ r = mkdir_p_root_full(root, *d, UID_INVALID, GID_INVALID, 0755, epoch_or_infinity(), subvolumes);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d);
+ }
+
+ return 0;
+}
+
+static int do_make_symlinks(Partition *p, const char *root) {
+ int r;
+
+ assert(p);
+ assert(root);
+
+ STRV_FOREACH_PAIR(path, target, p->make_symlinks) {
+ _cleanup_close_ int parent_fd = -EBADF;
+ _cleanup_free_ char *f = NULL;
+
+ r = chase(*path, root, CHASE_PREFIX_ROOT|CHASE_PARENT|CHASE_EXTRACT_FILENAME, &f, &parent_fd);
+ if (r < 0)
+ return log_error_errno(r, "Failed to resolve %s in %s", *path, root);
+
+ if (symlinkat(*target, parent_fd, f) < 0)
+ return log_error_errno(errno, "Failed to create symlink at %s to %s: %m", *path, *target);
+ }
+
+ return 0;
+}
+
+static int make_subvolumes_read_only(Partition *p, const char *root) {
+ _cleanup_free_ char *path = NULL;
+ Subvolume *subvolume;
+ int r;
+
+ ORDERED_HASHMAP_FOREACH(subvolume, p->subvolumes) {
+ if (!FLAGS_SET(subvolume->flags, SUBVOLUME_RO))
+ continue;
+
+ path = path_join(root, subvolume->path);
+ if (!path)
+ return log_oom();
+
+ r = btrfs_subvol_set_read_only(path, true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to make subvolume '%s' read-only: %m", subvolume->path);
+ }
+
+ if (p->suppressing) {
+ r = make_subvolumes_read_only(p->suppressing, root);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int set_default_subvolume(Partition *p, const char *root) {
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ assert(p);
+ assert(root);
+
+ if (!p->default_subvolume)
+ return 0;
+
+ path = path_join(root, p->default_subvolume);
+ if (!path)
+ return log_oom();
+
+ r = btrfs_subvol_make_default(path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to make '%s' the default subvolume: %m", p->default_subvolume);
+
+ return 0;
+}
+
+static int partition_populate_directory(Context *context, Partition *p, char **ret) {
+ _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
+ const char *vt;
+ int r;
+
+ assert(ret);
+
+ log_info("Preparing to populate %s filesystem.", p->format);
+
+ r = var_tmp_dir(&vt);
+ if (r < 0)
+ return log_error_errno(r, "Could not determine temporary directory: %m");
+
+ r = tempfn_random_child(vt, "repart", &root);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate temporary directory: %m");
+
+ r = mkdir(root, 0755);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to create temporary directory: %m");
+
+ r = do_copy_files(context, p, root);
+ if (r < 0)
+ return r;
+
+ r = do_make_directories(p, root);
+ if (r < 0)
+ return r;
+
+ r = do_make_symlinks(p, root);
+ if (r < 0)
+ return r;
+
+ log_info("Ready to populate %s filesystem.", p->format);
+
+ *ret = TAKE_PTR(root);
+ return 0;
+}
+
+static int partition_populate_filesystem(Context *context, Partition *p, const char *node) {
+ int r;
+
+ assert(p);
+ assert(node);
+
+ log_info("Populating %s filesystem.", p->format);
+
+ /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to
+ * appear in the host namespace. Hence we fork a child that has its own file system namespace and
+ * detached mount propagation. */
+
+ r = safe_fork("(sd-copy)", FORK_DEATHSIG_SIGTERM|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ static const char fs[] = "/run/systemd/mount-root";
+ /* This is a child process with its own mount namespace and propagation to host turned off */
+
+ r = mkdir_p(fs, 0700);
+ if (r < 0) {
+ log_error_errno(r, "Failed to create mount point: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0)
+ _exit(EXIT_FAILURE);
+
+ if (do_copy_files(context, p, fs) < 0)
+ _exit(EXIT_FAILURE);
+
+ if (do_make_directories(p, fs) < 0)
+ _exit(EXIT_FAILURE);
+
+ if (do_make_symlinks(p, fs) < 0)
+ _exit(EXIT_FAILURE);
+
+ if (make_subvolumes_read_only(p, fs) < 0)
+ _exit(EXIT_FAILURE);
+
+ if (set_default_subvolume(p, fs) < 0)
+ _exit(EXIT_FAILURE);
+
+ r = syncfs_path(AT_FDCWD, fs);
+ if (r < 0) {
+ log_error_errno(r, "Failed to synchronize written files: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ _exit(EXIT_SUCCESS);
+ }
+
+ log_info("Successfully populated %s filesystem.", p->format);
+ return 0;
+}
+
+static int finalize_extra_mkfs_options(const Partition *p, const char *root, char ***ret) {
+ _cleanup_strv_free_ char **sv = NULL;
+ int r;
+
+ assert(p);
+ assert(ret);
+
+ r = mkfs_options_from_env("REPART", p->format, &sv);
+ if (r < 0)
+ return log_error_errno(r,
+ "Failed to determine mkfs command line options for '%s': %m",
+ p->format);
+
+ *ret = TAKE_PTR(sv);
+ return 0;
+}
+
+static int context_mkfs(Context *context) {
+ int r;
+
+ assert(context);
+
+ /* Make a file system */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
+ _cleanup_(partition_target_freep) PartitionTarget *t = NULL;
+ _cleanup_strv_free_ char **extra_mkfs_options = NULL;
+
+ if (p->dropped)
+ continue;
+
+ if (PARTITION_EXISTS(p)) /* Never format existing partitions */
+ continue;
+
+ if (!p->format)
+ continue;
+
+ /* Minimized partitions will use the copy blocks logic so skip those here. */
+ if (p->copy_blocks_fd >= 0)
+ continue;
+
+ if (partition_type_defer(&p->type))
+ continue;
+
+ assert(p->offset != UINT64_MAX);
+ assert(p->new_size != UINT64_MAX);
+ assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0));
+
+ /* If we're doing encryption, keep free space at the end which is required
+ * for cryptsetup's offline encryption. */
+ r = partition_target_prepare(context, p,
+ p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0),
+ /*need_path=*/ true,
+ &t);
+ if (r < 0)
+ return r;
+
+ if (p->encrypt != ENCRYPT_OFF && t->loop) {
+ r = partition_target_grow(t, p->new_size);
+ if (r < 0)
+ return r;
+
+ r = partition_encrypt(context, p, t, /* offline = */ false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to encrypt device: %m");
+ }
+
+ log_info("Formatting future partition %" PRIu64 ".", p->partno);
+
+ /* If we're not writing to a loop device or if we're populating a read-only filesystem, we
+ * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that,
+ * we need to set up the final directory tree beforehand. */
+
+ if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) {
+ if (!mkfs_supports_root_option(p->format))
+ return log_error_errno(SYNTHETIC_ERRNO(ENODEV),
+ "Loop device access is required to populate %s filesystems.",
+ p->format);
+
+ r = partition_populate_directory(context, p, &root);
+ if (r < 0)
+ return r;
+ }
+
+ r = finalize_extra_mkfs_options(p, root, &extra_mkfs_options);
+ if (r < 0)
+ return r;
+
+ r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root,
+ p->fs_uuid, arg_discard, /* quiet = */ false,
+ context->fs_sector_size, p->compression, p->compression_level,
+ extra_mkfs_options);
+ if (r < 0)
+ return r;
+
+ /* The mkfs binary we invoked might have removed our temporary file when we're not operating
+ * on a loop device, so open the file again to make sure our file descriptor points to actual
+ * new file. */
+
+ if (t->fd >= 0 && t->path && !t->loop) {
+ safe_close(t->fd);
+ t->fd = open(t->path, O_RDWR|O_CLOEXEC);
+ if (t->fd < 0)
+ return log_error_errno(errno, "Failed to reopen temporary file: %m");
+ }
+
+ log_info("Successfully formatted future partition %" PRIu64 ".", p->partno);
+
+ /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */
+ if (partition_needs_populate(p) && !root) {
+ assert(t->loop);
+
+ r = partition_populate_filesystem(context, p, partition_target_path(t));
+ if (r < 0)
+ return r;
+ }
+
+ if (p->encrypt != ENCRYPT_OFF && !t->loop) {
+ r = partition_target_grow(t, p->new_size);
+ if (r < 0)
+ return r;
+
+ r = partition_encrypt(context, p, t, /* offline = */ true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to encrypt device: %m");
+ }
+
+ /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and
+ * if we don't sync before detaching a block device the in-flight sectors possibly won't hit
+ * the disk. */
+
+ r = partition_target_sync(context, p, t);
+ if (r < 0)
+ return r;
+
+ if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) {
+ r = partition_format_verity_hash(context, p->siblings[VERITY_HASH],
+ /* node = */ NULL, partition_target_path(t));
+ if (r < 0)
+ return r;
+ }
+
+ if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) {
+ r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) {
+ struct {
+ sd_id128_t type_uuid;
+ uint64_t counter;
+ } _packed_ plaintext = {};
+ union {
+ uint8_t md[SHA256_DIGEST_SIZE];
+ sd_id128_t id;
+ } result;
+
+ uint64_t k = 0;
+ int r;
+
+ assert(context);
+ assert(p);
+ assert(ret);
+
+ /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility,
+ * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely:
+ * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the
+ * installation we are processing, but if random behaviour is desired can be random, too. We use the
+ * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak)
+ * and the partition type as plaintext. The partition type is suffixed with a counter (only for the
+ * second and later partition of the same type) if we have more than one partition of the same
+ * time. Or in other words:
+ *
+ * With:
+ * SEED := /etc/machine-id
+ *
+ * If first partition instance of type TYPE_UUID:
+ * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID)
+ *
+ * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number:
+ * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE)
+ */
+
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (p == q)
+ break;
+
+ if (!sd_id128_equal(p->type.uuid, q->type.uuid))
+ continue;
+
+ k++;
+ }
+
+ plaintext.type_uuid = p->type.uuid;
+ plaintext.counter = htole64(k);
+
+ hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes),
+ &plaintext,
+ k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext),
+ result.md);
+
+ /* Take the first half, mark it as v4 UUID */
+ assert_cc(sizeof(result.md) == sizeof(result.id) * 2);
+ result.id = id128_make_v4_uuid(result.id);
+
+ /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (p == q)
+ continue;
+
+ if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) {
+ log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno);
+
+ r = sd_id128_randomize(&result.id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate randomized UUID: %m");
+
+ break;
+ }
+ }
+
+ *ret = result.id;
+ return 0;
+}
+
+static int partition_acquire_label(Context *context, Partition *p, char **ret) {
+ _cleanup_free_ char *label = NULL;
+ const char *prefix;
+ unsigned k = 1;
+
+ assert(context);
+ assert(p);
+ assert(ret);
+
+ prefix = gpt_partition_type_uuid_to_string(p->type.uuid);
+ if (!prefix)
+ prefix = "linux";
+
+ for (;;) {
+ const char *ll = label ?: prefix;
+ bool retry = false;
+
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (p == q)
+ break;
+
+ if (streq_ptr(ll, q->current_label) ||
+ streq_ptr(ll, q->new_label)) {
+ retry = true;
+ break;
+ }
+ }
+
+ if (!retry)
+ break;
+
+ label = mfree(label);
+ if (asprintf(&label, "%s-%u", prefix, ++k) < 0)
+ return log_oom();
+ }
+
+ if (!label) {
+ label = strdup(prefix);
+ if (!label)
+ return log_oom();
+ }
+
+ *ret = TAKE_PTR(label);
+ return 0;
+}
+
+static int context_acquire_partition_uuids_and_labels(Context *context) {
+ int r;
+
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ sd_id128_t uuid;
+
+ /* Never touch foreign partitions */
+ if (PARTITION_IS_FOREIGN(p)) {
+ p->new_uuid = p->current_uuid;
+
+ if (p->current_label) {
+ r = free_and_strdup_warn(&p->new_label, strempty(p->current_label));
+ if (r < 0)
+ return r;
+ }
+
+ continue;
+ }
+
+ if (!sd_id128_is_null(p->current_uuid))
+ p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */
+ else if (p->new_uuid_is_set)
+ uuid = p->new_uuid;
+ else {
+ /* Not explicitly set by user! */
+ r = partition_acquire_uuid(context, p, &uuid);
+ if (r < 0)
+ return r;
+
+ /* The final verity hash/data UUIDs can only be determined after formatting the
+ * verity hash partition. However, we still want to use the generated partition UUID
+ * to derive other UUIDs to keep things unique and reproducible, so we always
+ * generate a UUID if none is set, but we only use it as the actual partition UUID if
+ * verity is not configured. */
+ if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) {
+ p->new_uuid = uuid;
+ p->new_uuid_is_set = true;
+ }
+ }
+
+ /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid",
+ * keyed off the partition UUID. */
+ r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid);
+ if (r < 0)
+ return r;
+
+ if (p->encrypt != ENCRYPT_OFF) {
+ r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid);
+ if (r < 0)
+ return r;
+ }
+
+ /* Derive the verity salt and verity superblock UUID from the seed to keep them reproducible */
+ if (p->verity == VERITY_HASH) {
+ derive_salt(context->seed, "verity-salt", p->verity_salt);
+
+ r = derive_uuid(context->seed, "verity-uuid", &p->verity_uuid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire verity uuid: %m");
+ }
+
+ if (!isempty(p->current_label)) {
+ /* never change initialized labels */
+ r = free_and_strdup_warn(&p->new_label, p->current_label);
+ if (r < 0)
+ return r;
+ } else if (!p->new_label) {
+ /* Not explicitly set by user! */
+
+ r = partition_acquire_label(context, p, &p->new_label);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) {
+ _cleanup_free_ char *a = NULL;
+
+ for (unsigned i = 0; i < sizeof(flags) * 8; i++) {
+ uint64_t bit = UINT64_C(1) << i;
+ char buf[DECIMAL_STR_MAX(unsigned)+1];
+
+ if (!FLAGS_SET(flags, bit))
+ continue;
+
+ xsprintf(buf, "%u", i);
+ if (!strextend_with_separator(&a, ",", buf))
+ return -ENOMEM;
+ }
+
+ return fdisk_partition_set_attrs(q, a);
+}
+
+static uint64_t partition_merge_flags(Partition *p) {
+ uint64_t f;
+
+ assert(p);
+
+ f = p->gpt_flags;
+
+ if (p->no_auto >= 0) {
+ if (gpt_partition_type_knows_no_auto(p->type))
+ SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto);
+ else {
+ char buffer[SD_ID128_UUID_STRING_MAX];
+ log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.",
+ yes_no(p->no_auto),
+ gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
+ }
+ }
+
+ if (p->read_only >= 0) {
+ if (gpt_partition_type_knows_read_only(p->type))
+ SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only);
+ else {
+ char buffer[SD_ID128_UUID_STRING_MAX];
+ log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.",
+ yes_no(p->read_only),
+ gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
+ }
+ }
+
+ if (p->growfs >= 0) {
+ if (gpt_partition_type_knows_growfs(p->type))
+ SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs);
+ else {
+ char buffer[SD_ID128_UUID_STRING_MAX];
+ log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.",
+ yes_no(p->growfs),
+ gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer));
+ }
+ }
+
+ return f;
+}
+
+static int context_mangle_partitions(Context *context) {
+ int r;
+
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (p->dropped)
+ continue;
+
+ if (partition_type_defer(&p->type))
+ continue;
+
+ assert(p->new_size != UINT64_MAX);
+ assert(p->offset != UINT64_MAX);
+ assert(p->partno != UINT64_MAX);
+
+ if (PARTITION_EXISTS(p)) {
+ bool changed = false;
+
+ assert(p->current_partition);
+
+ if (p->new_size != p->current_size) {
+ assert(p->new_size >= p->current_size);
+ assert(p->new_size % context->sector_size == 0);
+
+ r = fdisk_partition_size_explicit(p->current_partition, true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enable explicit sizing: %m");
+
+ r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to grow partition: %m");
+
+ log_info("Growing existing partition %" PRIu64 ".", p->partno);
+ changed = true;
+ }
+
+ if (!sd_id128_equal(p->new_uuid, p->current_uuid)) {
+ r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid));
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition UUID: %m");
+
+ log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno);
+ changed = true;
+ }
+
+ if (!streq_ptr(p->new_label, p->current_label)) {
+ r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label));
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition label: %m");
+
+ log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno);
+ changed = true;
+ }
+
+ if (changed) {
+ assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */
+
+ r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition);
+ if (r < 0)
+ return log_error_errno(r, "Failed to update partition: %m");
+ }
+ } else {
+ _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL;
+ _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL;
+
+ assert(!p->new_partition);
+ assert(p->offset % context->sector_size == 0);
+ assert(p->new_size % context->sector_size == 0);
+ assert(p->new_label);
+
+ t = fdisk_new_parttype();
+ if (!t)
+ return log_oom();
+
+ r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid));
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize partition type: %m");
+
+ q = fdisk_new_partition();
+ if (!q)
+ return log_oom();
+
+ r = fdisk_partition_set_type(q, t);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition type: %m");
+
+ r = fdisk_partition_size_explicit(q, true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enable explicit sizing: %m");
+
+ r = fdisk_partition_set_start(q, p->offset / context->sector_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to position partition: %m");
+
+ r = fdisk_partition_set_size(q, p->new_size / context->sector_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to grow partition: %m");
+
+ r = fdisk_partition_set_partno(q, p->partno);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition number: %m");
+
+ r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid));
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition UUID: %m");
+
+ r = fdisk_partition_set_name(q, strempty(p->new_label));
+ if (r < 0)
+ return log_error_errno(r, "Failed to set partition label: %m");
+
+ /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */
+ r = set_gpt_flags(q, partition_merge_flags(p));
+ if (r < 0)
+ return log_error_errno(r, "Failed to set GPT partition flags: %m");
+
+ log_info("Adding new partition %" PRIu64 " to partition table.", p->partno);
+
+ r = fdisk_add_partition(context->fdisk_context, q, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add partition: %m");
+
+ assert(!p->new_partition);
+ p->new_partition = TAKE_PTR(q);
+ }
+ }
+
+ return 0;
+}
+
+static int split_name_printf(Partition *p, char **ret) {
+ assert(p);
+
+ const Specifier table[] = {
+ { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) },
+ { 'T', specifier_id128, &p->type.uuid },
+ { 'U', specifier_id128, &p->new_uuid },
+ { 'n', specifier_uint64, &p->partno },
+
+ COMMON_SYSTEM_SPECIFIERS,
+ {}
+ };
+
+ return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret);
+}
+
+static int split_node(const char *node, char **ret_base, char **ret_ext) {
+ _cleanup_free_ char *base = NULL, *ext = NULL;
+ char *e;
+ int r;
+
+ assert(node);
+ assert(ret_base);
+ assert(ret_ext);
+
+ r = path_extract_filename(node, &base);
+ if (r == O_DIRECTORY || r == -EADDRNOTAVAIL)
+ return log_error_errno(r, "Device node %s cannot be a directory", node);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract filename from %s: %m", node);
+
+ e = endswith(base, ".raw");
+ if (e) {
+ ext = strdup(e);
+ if (!ext)
+ return log_oom();
+
+ *e = 0;
+ }
+
+ *ret_base = TAKE_PTR(base);
+ *ret_ext = TAKE_PTR(ext);
+
+ return 0;
+}
+
+static int split_name_resolve(Context *context) {
+ _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL;
+ int r;
+
+ assert(context);
+
+ r = path_extract_directory(context->node, &parent);
+ if (r < 0 && r != -EDESTADDRREQ)
+ return log_error_errno(r, "Failed to extract directory from %s: %m", context->node);
+
+ r = split_node(context->node, &base, &ext);
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *resolved = NULL;
+
+ if (p->dropped)
+ continue;
+
+ if (!p->split_name_format)
+ continue;
+
+ r = split_name_printf(p, &resolved);
+ if (r < 0)
+ return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format);
+
+ if (parent)
+ p->split_path = strjoin(parent, "/", base, ".", resolved, ext);
+ else
+ p->split_path = strjoin(base, ".", resolved, ext);
+ if (!p->split_path)
+ return log_oom();
+ }
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (!p->split_path)
+ continue;
+
+ LIST_FOREACH(partitions, q, context->partitions) {
+ if (p == q)
+ continue;
+
+ if (!q->split_path)
+ continue;
+
+ if (!streq(p->split_path, q->split_path))
+ continue;
+
+ return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ),
+ "%s and %s have the same resolved split name \"%s\", refusing.",
+ p->definition_path, q->definition_path, p->split_path);
+ }
+ }
+
+ return 0;
+}
+
+static int context_split(Context *context) {
+ unsigned attrs = 0;
+ int fd = -EBADF, r;
+
+ if (!arg_split)
+ return 0;
+
+ assert(context);
+
+ /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled
+ * in after they've been generated. */
+
+ r = split_name_resolve(context);
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_close_ int fdt = -EBADF;
+
+ if (p->dropped)
+ continue;
+
+ if (!p->split_path)
+ continue;
+
+ if (partition_type_defer(&p->type))
+ continue;
+
+ if (fd < 0) {
+ assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0);
+
+ r = read_attr_fd(fd, &attrs);
+ if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
+ return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
+ }
+
+ fdt = xopenat_full(
+ AT_FDCWD,
+ p->split_path,
+ O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL,
+ attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
+ 0666);
+ if (fdt < 0)
+ return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path);
+
+ if (lseek(fd, p->offset, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to seek to partition offset: %m");
+
+ r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES|COPY_TRUNCATE);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path);
+ }
+
+ return 0;
+}
+
+static int context_write_partition_table(Context *context) {
+ _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL;
+ int capable, r;
+
+ assert(context);
+
+ if (!context->from_scratch && !context_changed(context)) {
+ log_info("No changes.");
+ return 0;
+ }
+
+ if (arg_dry_run) {
+ log_notice("Refusing to repartition, please re-run with --dry-run=no.");
+ return 0;
+ }
+
+ log_info("Applying changes to %s.", context->node);
+
+ if (context->from_scratch && arg_empty != EMPTY_CREATE) {
+ /* Erase everything if we operate from scratch, except if the image was just created anyway, and thus is definitely empty. */
+ r = context_wipe_range(context, 0, context->total);
+ if (r < 0)
+ return r;
+
+ log_info("Wiped block device.");
+
+ if (arg_discard) {
+ r = context_discard_range(context, 0, context->total);
+ if (r == -EOPNOTSUPP)
+ log_info("Storage does not support discard, not discarding entire block device data.");
+ else if (r < 0)
+ return log_error_errno(r, "Failed to discard entire block device: %m");
+ else if (r > 0)
+ log_info("Discarded entire block device.");
+ }
+ }
+
+ r = fdisk_get_partitions(context->fdisk_context, &original_table);
+ if (r < 0)
+ return log_error_errno(r, "Failed to acquire partition table: %m");
+
+ /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the
+ * gaps between partitions, just to be sure. */
+ r = context_wipe_and_discard(context);
+ if (r < 0)
+ return r;
+
+ r = context_copy_blocks(context);
+ if (r < 0)
+ return r;
+
+ r = context_mkfs(context);
+ if (r < 0)
+ return r;
+
+ r = context_mangle_partitions(context);
+ if (r < 0)
+ return r;
+
+ log_info("Writing new partition table.");
+
+ r = fdisk_write_disklabel(context->fdisk_context);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write partition table: %m");
+
+ capable = blockdev_partscan_enabled_fd(fdisk_get_devfd(context->fdisk_context));
+ if (capable == -ENOTBLK)
+ log_debug("Not telling kernel to reread partition table, since we are not operating on a block device.");
+ else if (capable < 0)
+ return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m");
+ else if (capable > 0) {
+ log_info("Telling kernel to reread partition table.");
+
+ if (context->from_scratch)
+ r = fdisk_reread_partition_table(context->fdisk_context);
+ else
+ r = fdisk_reread_changes(context->fdisk_context, original_table);
+ if (r < 0)
+ return log_error_errno(r, "Failed to reread partition table: %m");
+ } else
+ log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices.");
+
+ log_info("All done.");
+
+ return 0;
+}
+
+static int context_read_seed(Context *context, const char *root) {
+ int r;
+
+ assert(context);
+
+ if (!sd_id128_is_null(context->seed))
+ return 0;
+
+ if (!arg_randomize) {
+ r = id128_get_machine(root, &context->seed);
+ if (r >= 0)
+ return 0;
+
+ if (!ERRNO_IS_MACHINE_ID_UNSET(r))
+ return log_error_errno(r, "Failed to parse machine ID of image: %m");
+
+ log_info("No machine ID set, using randomized partition UUIDs.");
+ }
+
+ r = sd_id128_randomize(&context->seed);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate randomized seed: %m");
+
+ return 0;
+}
+
+static int context_factory_reset(Context *context) {
+ size_t n = 0;
+ int r;
+
+ assert(context);
+
+ if (arg_factory_reset <= 0)
+ return 0;
+
+ if (context->from_scratch) /* Nothing to reset if we start from scratch */
+ return 0;
+
+ if (arg_dry_run) {
+ log_notice("Refusing to factory reset, please re-run with --dry-run=no.");
+ return 0;
+ }
+
+ log_info("Applying factory reset.");
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+
+ if (!p->factory_reset || !PARTITION_EXISTS(p))
+ continue;
+
+ assert(p->partno != UINT64_MAX);
+
+ log_info("Removing partition %" PRIu64 " for factory reset.", p->partno);
+
+ r = fdisk_delete_partition(context->fdisk_context, p->partno);
+ if (r < 0)
+ return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno);
+
+ n++;
+ }
+
+ if (n == 0) {
+ log_info("Factory reset requested, but no partitions to delete found.");
+ return 0;
+ }
+
+ r = fdisk_write_disklabel(context->fdisk_context);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write disk label: %m");
+
+ log_info("Successfully deleted %zu partitions.", n);
+ return 1;
+}
+
+static int context_can_factory_reset(Context *context) {
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (p->factory_reset && PARTITION_EXISTS(p))
+ return true;
+
+ return false;
+}
+
+static int resolve_copy_blocks_auto_candidate(
+ dev_t partition_devno,
+ GptPartitionType partition_type,
+ dev_t restrict_devno,
+ sd_id128_t *ret_uuid) {
+
+ _cleanup_(blkid_free_probep) blkid_probe b = NULL;
+ _cleanup_close_ int fd = -EBADF;
+ _cleanup_free_ char *p = NULL;
+ const char *pttype, *t;
+ sd_id128_t pt_parsed, u;
+ blkid_partition pp;
+ dev_t whole_devno;
+ blkid_partlist pl;
+ int r;
+
+ /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified
+ * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is
+ * backed by two separate partitions: the data and the hash partitions, and we need to find the right
+ * one of the two. */
+
+ r = block_get_whole_disk(partition_devno, &whole_devno);
+ if (r < 0)
+ return log_error_errno(
+ r,
+ "Unable to determine containing block device of partition %u:%u: %m",
+ major(partition_devno), minor(partition_devno));
+
+ if (restrict_devno != (dev_t) -1 &&
+ restrict_devno != whole_devno)
+ return log_error_errno(
+ SYNTHETIC_ERRNO(EPERM),
+ "Partition %u:%u is located outside of block device %u:%u, refusing.",
+ major(partition_devno), minor(partition_devno),
+ major(restrict_devno), minor(restrict_devno));
+
+ fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m",
+ DEVNUM_FORMAT_VAL(whole_devno));
+
+ b = blkid_new_probe();
+ if (!b)
+ return log_oom();
+
+ errno = 0;
+ r = blkid_probe_set_device(b, fd, 0, 0);
+ if (r != 0)
+ return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p);
+
+ (void) blkid_probe_enable_partitions(b, 1);
+ (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
+
+ errno = 0;
+ r = blkid_do_safeprobe(b);
+ if (r == _BLKID_SAFEPROBE_ERROR)
+ return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p);
+ if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) {
+ log_debug("Didn't find partition table on block device '%s'.", p);
+ return false;
+ }
+
+ assert(r == _BLKID_SAFEPROBE_FOUND);
+
+ (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL);
+ if (!streq_ptr(pttype, "gpt")) {
+ log_debug("Didn't find a GPT partition table on '%s'.", p);
+ return false;
+ }
+
+ errno = 0;
+ pl = blkid_probe_get_partitions(b);
+ if (!pl)
+ return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p);
+
+ pp = blkid_partlist_devno_to_partition(pl, partition_devno);
+ if (!pp) {
+ log_debug("Partition %u:%u has no matching partition table entry on '%s'.",
+ major(partition_devno), minor(partition_devno), p);
+ return false;
+ }
+
+ t = blkid_partition_get_type_string(pp);
+ if (isempty(t)) {
+ log_debug("Partition %u:%u has no type on '%s'.",
+ major(partition_devno), minor(partition_devno), p);
+ return false;
+ }
+
+ r = sd_id128_from_string(t, &pt_parsed);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t);
+ return false;
+ }
+
+ if (!sd_id128_equal(pt_parsed, partition_type.uuid)) {
+ log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.",
+ major(partition_devno), minor(partition_devno),
+ SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid));
+ return false;
+ }
+
+ r = blkid_partition_get_uuid_id128(pp, &u);
+ if (r == -ENXIO) {
+ log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno));
+ return false;
+ }
+ if (r < 0) {
+ log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno));
+ return false;
+ }
+
+ log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".",
+ DEVNUM_FORMAT_VAL(partition_devno),
+ SD_ID128_FORMAT_VAL(pt_parsed));
+
+ if (ret_uuid)
+ *ret_uuid = u;
+
+ return true;
+}
+
+static int find_backing_devno(
+ const char *path,
+ const char *root,
+ dev_t *ret) {
+
+ _cleanup_free_ char *resolved = NULL;
+ int r;
+
+ assert(path);
+
+ r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL);
+ if (r < 0)
+ return r;
+
+ r = path_is_mount_point(resolved);
+ if (r < 0)
+ return r;
+ if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */
+ return -ENOENT;
+
+ r = get_block_device(resolved, ret);
+ if (r < 0)
+ return r;
+ if (r == 0) /* Not backed by physical file system, we can't use this */
+ return -ENOENT;
+
+ return 0;
+}
+
+static int resolve_copy_blocks_auto(
+ GptPartitionType type,
+ const char *root,
+ dev_t restrict_devno,
+ dev_t *ret_devno,
+ sd_id128_t *ret_uuid) {
+
+ const char *try1 = NULL, *try2 = NULL;
+ char p[SYS_BLOCK_PATH_MAX("/slaves")];
+ _cleanup_closedir_ DIR *d = NULL;
+ sd_id128_t found_uuid = SD_ID128_NULL;
+ dev_t devno, found = 0;
+ int r;
+
+ /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the
+ * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all,
+ * and restrict block device references in the --image= case to loopback block device we set up.
+ *
+ * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and
+ * thus declares which device (and its partition subdevices) we shall limit access to. If
+ * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if
+ * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */
+
+ if (restrict_devno == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EPERM),
+ "Automatic discovery of backing block devices not permitted in --root= mode, refusing.");
+
+ /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching
+ * partitions in the host, using the appropriate directory as key and ensuring that the partition
+ * type matches. */
+
+ if (type.designator == PARTITION_ROOT)
+ try1 = "/";
+ else if (type.designator == PARTITION_USR)
+ try1 = "/usr/";
+ else if (type.designator == PARTITION_ROOT_VERITY)
+ try1 = "/";
+ else if (type.designator == PARTITION_USR_VERITY)
+ try1 = "/usr/";
+ else if (type.designator == PARTITION_ESP) {
+ try1 = "/efi/";
+ try2 = "/boot/";
+ } else if (type.designator == PARTITION_XBOOTLDR)
+ try1 = "/boot/";
+ else
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.",
+ SD_ID128_FORMAT_VAL(type.uuid));
+
+ r = find_backing_devno(try1, root, &devno);
+ if (r == -ENOENT && try2)
+ r = find_backing_devno(try2, root, &devno);
+ if (r < 0)
+ return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m",
+ SD_ID128_FORMAT_VAL(type.uuid));
+
+ xsprintf_sys_block_path(p, "/slaves", devno);
+ d = opendir(p);
+ if (d) {
+ struct dirent *de;
+
+ for (;;) {
+ _cleanup_free_ char *q = NULL, *t = NULL;
+ sd_id128_t u;
+ dev_t sl;
+
+ errno = 0;
+ de = readdir_no_dot(d);
+ if (!de) {
+ if (errno != 0)
+ return log_error_errno(errno, "Failed to read directory '%s': %m", p);
+
+ break;
+ }
+
+ if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN))
+ continue;
+
+ q = path_join(p, de->d_name, "/dev");
+ if (!q)
+ return log_oom();
+
+ r = read_one_line_file(q, &t);
+ if (r < 0)
+ return log_error_errno(r, "Failed to read %s: %m", q);
+
+ r = parse_devnum(t, &sl);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to parse %s, ignoring: %m", q);
+ continue;
+ }
+ if (major(sl) == 0) {
+ log_debug("Device backing %s is special, ignoring.", q);
+ continue;
+ }
+
+ r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ /* We found a matching one! */
+ if (found != 0)
+ return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ),
+ "Multiple matching partitions found, refusing.");
+
+ found = sl;
+ found_uuid = u;
+ }
+ }
+ } else if (errno != ENOENT)
+ return log_error_errno(errno, "Failed open %s: %m", p);
+ else {
+ r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ found = devno;
+ }
+
+ if (found == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(ENXIO),
+ "Unable to automatically discover suitable partition to copy blocks from.");
+
+ if (ret_devno)
+ *ret_devno = found;
+
+ if (ret_uuid)
+ *ret_uuid = found_uuid;
+
+ return 0;
+}
+
+static int context_open_copy_block_paths(
+ Context *context,
+ dev_t restrict_devno) {
+
+ int r;
+
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_close_ int source_fd = -EBADF;
+ _cleanup_free_ char *opened = NULL;
+ sd_id128_t uuid = SD_ID128_NULL;
+ uint64_t size;
+ struct stat st;
+
+ if (p->copy_blocks_fd >= 0)
+ continue;
+
+ assert(p->copy_blocks_size == UINT64_MAX);
+
+ if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */
+ continue;
+
+ if (p->copy_blocks_path) {
+
+ source_fd = chase_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened);
+ if (source_fd < 0)
+ return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path);
+
+ if (fstat(source_fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened);
+
+ if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1)
+ return log_error_errno(SYNTHETIC_ERRNO(EPERM),
+ "Copying from block device node is not permitted in --image=/--root= mode, refusing.");
+
+ } else if (p->copy_blocks_auto) {
+ dev_t devno = 0; /* Fake initialization to appease gcc. */
+
+ r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid);
+ if (r < 0)
+ return r;
+ assert(devno != 0);
+
+ source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m",
+ DEVNUM_FORMAT_VAL(devno));
+
+ if (fstat(source_fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened);
+ } else
+ continue;
+
+ if (S_ISDIR(st.st_mode)) {
+ _cleanup_free_ char *bdev = NULL;
+ dev_t devt;
+
+ /* If the file is a directory, automatically find the backing block device */
+
+ if (major(st.st_dev) != 0)
+ devt = st.st_dev;
+ else {
+ /* Special support for btrfs */
+ r = btrfs_get_block_device_fd(source_fd, &devt);
+ if (r == -EUCLEAN)
+ return btrfs_log_dev_root(LOG_ERR, r, opened);
+ if (r < 0)
+ return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened);
+ }
+
+ safe_close(source_fd);
+
+ source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open block device backing '%s': %m", opened);
+
+ if (fstat(source_fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev);
+ }
+
+ if (S_ISREG(st.st_mode))
+ size = st.st_size;
+ else if (S_ISBLK(st.st_mode)) {
+ r = blockdev_get_device_size(source_fd, &size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine size of block device to copy from: %m");
+ } else if (S_ISCHR(st.st_mode))
+ size = UINT64_MAX;
+ else
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified path to copy blocks from '%s' is not a regular file, block device or directory, refusing.", opened);
+
+ if (size != UINT64_MAX) {
+ if (size <= 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened);
+ if (size % 512 != 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has size that is not multiple of 512, refusing.", opened);
+ }
+
+ p->copy_blocks_fd = TAKE_FD(source_fd);
+ p->copy_blocks_size = size;
+
+ free_and_replace(p->copy_blocks_path, opened);
+
+ /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */
+ if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) {
+ p->new_uuid = uuid;
+ p->new_uuid_is_set = true;
+ }
+ }
+
+ return 0;
+}
+
+static int fd_apparent_size(int fd, uint64_t *ret) {
+ off_t initial = 0;
+ uint64_t size = 0;
+
+ assert(fd >= 0);
+ assert(ret);
+
+ initial = lseek(fd, 0, SEEK_CUR);
+ if (initial < 0)
+ return log_error_errno(errno, "Failed to get file offset: %m");
+
+ for (off_t off = 0;;) {
+ off_t r;
+
+ r = lseek(fd, off, SEEK_DATA);
+ if (r < 0 && errno == ENXIO)
+ /* If errno == ENXIO, that means we've reached the final hole of the file and
+ * that hole isn't followed by more data. */
+ break;
+ if (r < 0)
+ return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off);
+
+ off = r; /* Set the offset to the start of the data segment. */
+
+ /* After copying a potential hole, find the end of the data segment by looking for
+ * the next hole. If we get ENXIO, we're at EOF. */
+ r = lseek(fd, off, SEEK_HOLE);
+ if (r < 0) {
+ if (errno == ENXIO)
+ break;
+ return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off);
+ }
+
+ size += r - off;
+ off = r;
+ }
+
+ if (lseek(fd, initial, SEEK_SET) < 0)
+ return log_error_errno(errno, "Failed to reset file offset: %m");
+
+ *ret = size;
+
+ return 0;
+}
+
+static bool need_fstab_one(const Partition *p) {
+ assert(p);
+
+ if (p->dropped)
+ return false;
+
+ if (!p->format)
+ return false;
+
+ if (p->n_mountpoints == 0)
+ return false;
+
+ return true;
+}
+
+static bool need_fstab(const Context *context) {
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (need_fstab_one(p))
+ return true;
+
+ return false;
+}
+
+static int context_fstab(Context *context) {
+ _cleanup_(unlink_and_freep) char *t = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ assert(context);
+
+ if (!arg_generate_fstab)
+ return false;
+
+ if (!need_fstab(context)) {
+ log_notice("MountPoint= is not specified for any eligible partitions, not generating %s",
+ arg_generate_fstab);
+ return 0;
+ }
+
+ path = path_join(arg_copy_source, arg_generate_fstab);
+ if (!path)
+ return log_oom();
+
+ r = fopen_tmpfile_linkable(path, O_WRONLY|O_CLOEXEC, &t, &f);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open temporary file for %s: %m", path);
+
+ fprintf(f, "# Automatically generated by systemd-repart\n\n");
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *what = NULL, *options = NULL;
+
+ if (!need_fstab_one(p))
+ continue;
+
+ what = strjoin("UUID=", SD_ID128_TO_UUID_STRING(p->fs_uuid));
+ if (!what)
+ return log_oom();
+
+ FOREACH_ARRAY(mountpoint, p->mountpoints, p->n_mountpoints) {
+ r = partition_pick_mount_options(
+ p->type.designator,
+ p->format,
+ /* rw= */ true,
+ /* discard= */ !IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR),
+ &options,
+ NULL);
+ if (r < 0)
+ return r;
+
+ if (!strextend_with_separator(&options, ",", mountpoint->options))
+ return log_oom();
+
+ fprintf(f, "%s %s %s %s 0 %i\n",
+ what,
+ mountpoint->where,
+ p->format,
+ options,
+ p->type.designator == PARTITION_ROOT ? 1 : 2);
+ }
+ }
+
+ r = flink_tmpfile(f, t, path, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to link temporary file to %s: %m", path);
+
+ log_info("%s written.", path);
+
+ return 0;
+}
+
+static bool need_crypttab_one(const Partition *p) {
+ assert(p);
+
+ if (p->dropped)
+ return false;
+
+ if (p->encrypt == ENCRYPT_OFF)
+ return false;
+
+ if (!p->encrypted_volume)
+ return false;
+
+ return true;
+}
+
+static bool need_crypttab(Context *context) {
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions)
+ if (need_crypttab_one(p))
+ return true;
+
+ return false;
+}
+
+static int context_crypttab(Context *context) {
+ _cleanup_(unlink_and_freep) char *t = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ assert(context);
+
+ if (!arg_generate_crypttab)
+ return false;
+
+ if (!need_crypttab(context)) {
+ log_notice("EncryptedVolume= is not specified for any eligible partitions, not generating %s",
+ arg_generate_crypttab);
+ return 0;
+ }
+
+ path = path_join(arg_copy_source, arg_generate_crypttab);
+ if (!path)
+ return log_oom();
+
+ r = fopen_tmpfile_linkable(path, O_WRONLY|O_CLOEXEC, &t, &f);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open temporary file for %s: %m", path);
+
+ fprintf(f, "# Automatically generated by systemd-repart\n\n");
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_free_ char *volume = NULL;
+
+ if (!need_crypttab_one(p))
+ continue;
+
+ if (!p->encrypted_volume->name && asprintf(&volume, "luks-%s", SD_ID128_TO_UUID_STRING(p->luks_uuid)) < 0)
+ return log_oom();
+
+ fprintf(f, "%s UUID=%s %s %s\n",
+ p->encrypted_volume->name ?: volume,
+ SD_ID128_TO_UUID_STRING(p->luks_uuid),
+ isempty(p->encrypted_volume->keyfile) ? "-" : p->encrypted_volume->keyfile,
+ strempty(p->encrypted_volume->options));
+ }
+
+ r = flink_tmpfile(f, t, path, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to link temporary file to %s: %m", path);
+
+ log_info("%s written.", path);
+
+ return 0;
+}
+
+/* update block sizes for verity siblings, calculate hash partition size if requested */
+static int context_update_verity_size(Context *context) {
+ int r;
+
+ assert(context);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ Partition *dp;
+
+ if (p->verity != VERITY_HASH)
+ continue;
+
+ if (p->dropped)
+ continue;
+
+ if (PARTITION_EXISTS(p)) /* Never format existing partitions */
+ continue;
+
+ assert_se(dp = p->siblings[VERITY_DATA]);
+
+ if (p->verity_data_block_size == UINT64_MAX)
+ p->verity_data_block_size = context->fs_sector_size;
+
+ if (p->verity_hash_block_size == UINT64_MAX)
+ p->verity_hash_block_size = context->fs_sector_size;
+
+ uint64_t sz;
+ if (dp->size_max != UINT64_MAX) {
+ r = calculate_verity_hash_size(
+ dp->size_max,
+ p->verity_hash_block_size,
+ p->verity_data_block_size,
+ &sz);
+ if (r < 0)
+ return log_error_errno(r, "Failed to calculate size of dm-verity hash partition: %m");
+
+ if (sz > p->size_min || sz > p->size_max)
+ log_warning("The dm-verity hash partition %s may be too small for a data partition "
+ "with SizeMaxBytes=%s. The hash partition would require %s for a data "
+ "partition of specified max size. Consider increasing the size of the "
+ "hash partition, or decreasing SizeMaxBytes= of the data partition.",
+ p->definition_path, FORMAT_BYTES(dp->size_max), FORMAT_BYTES(sz));
+ else if (p->size_min == UINT64_MAX) {
+ log_debug("Derived size %s of verity hash partition %s from verity data partition %s.",
+ FORMAT_BYTES(sz), p->definition_path, dp->definition_path);
+
+ p->size_min = sz;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int context_minimize(Context *context) {
+ const char *vt = NULL;
+ unsigned attrs = 0;
+ int r;
+
+ assert(context);
+
+ r = read_attr_fd(context->backing_fd, &attrs);
+ if (r < 0 && !ERRNO_IS_NEG_NOT_SUPPORTED(r))
+ return log_error_errno(r, "Failed to read file attributes of %s: %m", arg_node);
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_(rm_rf_physical_and_freep) char *root = NULL;
+ _cleanup_(unlink_and_freep) char *temp = NULL;
+ _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
+ _cleanup_strv_free_ char **extra_mkfs_options = NULL;
+ _cleanup_close_ int fd = -EBADF;
+ _cleanup_free_ char *hint = NULL;
+ sd_id128_t fs_uuid;
+ struct stat st;
+ uint64_t fsz;
+
+ if (p->dropped)
+ continue;
+
+ if (PARTITION_EXISTS(p)) /* Never format existing partitions */
+ continue;
+
+ if (!p->format)
+ continue;
+
+ if (p->copy_blocks_fd >= 0)
+ continue;
+
+ if (p->minimize == MINIMIZE_OFF)
+ continue;
+
+ if (!partition_needs_populate(p))
+ continue;
+
+ assert(!p->copy_blocks_path);
+
+ (void) partition_hint(p, context->node, &hint);
+
+ log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size",
+ p->format, strna(hint));
+
+ if (!vt) {
+ r = var_tmp_dir(&vt);
+ if (r < 0)
+ return log_error_errno(r, "Could not determine temporary directory: %m");
+ }
+
+ r = tempfn_random_child(vt, "repart", &temp);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate temporary file path: %m");
+
+ fd = xopenat_full(
+ AT_FDCWD,
+ temp,
+ O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY,
+ attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
+ 0600);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
+
+ if (fstype_is_ro(p->format))
+ fs_uuid = p->fs_uuid;
+ else {
+ /* This may seem huge but it will be created sparse so it doesn't take up any space
+ * on disk until written to. */
+ if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0)
+ return log_error_errno(errno, "Failed to truncate temporary file to %s: %m",
+ FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL));
+
+ if (arg_offline <= 0) {
+ r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d);
+ if (r < 0 && loop_device_error_is_fatal(p, r))
+ return log_error_errno(r, "Failed to make loopback device of %s: %m", temp);
+ }
+
+ /* We're going to populate this filesystem twice so use a random UUID the first time
+ * to avoid UUID conflicts. */
+ r = sd_id128_randomize(&fs_uuid);
+ if (r < 0)
+ return r;
+ }
+
+ if (!d || fstype_is_ro(p->format)) {
+ if (!mkfs_supports_root_option(p->format))
+ return log_error_errno(SYNTHETIC_ERRNO(ENODEV),
+ "Loop device access is required to populate %s filesystems.",
+ p->format);
+
+ r = partition_populate_directory(context, p, &root);
+ if (r < 0)
+ return r;
+ }
+
+ r = finalize_extra_mkfs_options(p, root, &extra_mkfs_options);
+ if (r < 0)
+ return r;
+
+ r = make_filesystem(d ? d->node : temp,
+ p->format,
+ strempty(p->new_label),
+ root,
+ fs_uuid,
+ arg_discard, /* quiet = */ false,
+ context->fs_sector_size,
+ p->compression,
+ p->compression_level,
+ extra_mkfs_options);
+ if (r < 0)
+ return r;
+
+ /* Read-only filesystems are minimal from the first try because they create and size the
+ * loopback file for us. */
+ if (fstype_is_ro(p->format)) {
+ fd = safe_close(fd);
+
+ fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
+
+ if (fstat(fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat temporary file: %m");
+
+ log_info("Minimal partition size of %s filesystem of partition %s is %s",
+ p->format, strna(hint), FORMAT_BYTES(st.st_size));
+
+ p->copy_blocks_path = TAKE_PTR(temp);
+ p->copy_blocks_path_is_our_file = true;
+ p->copy_blocks_fd = TAKE_FD(fd);
+ p->copy_blocks_size = st.st_size;
+ continue;
+ }
+
+ if (!root) {
+ assert(d);
+
+ r = partition_populate_filesystem(context, p, d->node);
+ if (r < 0)
+ return r;
+ }
+
+ /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to
+ * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the
+ * filesystem down to a reasonable size again to fit it in the disk image. While there are
+ * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking
+ * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate
+ * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse
+ * loopback file, let's size the loopback file based on the actual data used by the
+ * filesystem in the sparse file after the first attempt. This should be a good guess of the
+ * minimal amount of space needed in the filesystem to fit all the required data.
+ */
+ r = fd_apparent_size(fd, &fsz);
+ if (r < 0)
+ return r;
+
+ /* Massage the size a bit because just going by actual data used in the sparse file isn't
+ * fool-proof. */
+ uint64_t heuristic = streq(p->format, "xfs") ? fsz : fsz / 2;
+ fsz = round_up_size(fsz + heuristic, context->grain_size);
+ if (minimal_size_by_fs_name(p->format) != UINT64_MAX)
+ fsz = MAX(minimal_size_by_fs_name(p->format), fsz);
+
+ log_info("Minimal partition size of %s filesystem of partition %s is %s",
+ p->format, strna(hint), FORMAT_BYTES(fsz));
+
+ d = loop_device_unref(d);
+
+ /* Erase the previous filesystem first. */
+ if (ftruncate(fd, 0) < 0)
+ return log_error_errno(errno, "Failed to erase temporary file: %m");
+
+ if (ftruncate(fd, fsz) < 0)
+ return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz));
+
+ if (arg_offline <= 0) {
+ r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d);
+ if (r < 0 && loop_device_error_is_fatal(p, r))
+ return log_error_errno(r, "Failed to make loopback device of %s: %m", temp);
+ }
+
+ r = make_filesystem(d ? d->node : temp,
+ p->format,
+ strempty(p->new_label),
+ root,
+ p->fs_uuid,
+ arg_discard,
+ /* quiet = */ false,
+ context->fs_sector_size,
+ p->compression,
+ p->compression_level,
+ extra_mkfs_options);
+ if (r < 0)
+ return r;
+
+ if (!root) {
+ assert(d);
+
+ r = partition_populate_filesystem(context, p, d->node);
+ if (r < 0)
+ return r;
+ }
+
+ if (fstat(fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat temporary file: %m");
+
+ p->copy_blocks_path = TAKE_PTR(temp);
+ p->copy_blocks_path_is_our_file = true;
+ p->copy_blocks_fd = TAKE_FD(fd);
+ p->copy_blocks_size = st.st_size;
+ }
+
+ /* Now that we've done the data partitions, do the verity hash partitions. We do these in a separate
+ * step because they might depend on data generated in the previous step. */
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ _cleanup_(unlink_and_freep) char *temp = NULL;
+ _cleanup_free_ char *hint = NULL;
+ _cleanup_close_ int fd = -EBADF;
+ struct stat st;
+ Partition *dp;
+
+ if (p->dropped)
+ continue;
+
+ if (PARTITION_EXISTS(p)) /* Never format existing partitions */
+ continue;
+
+ if (p->minimize == MINIMIZE_OFF)
+ continue;
+
+ if (p->verity != VERITY_HASH)
+ continue;
+
+ assert_se(dp = p->siblings[VERITY_DATA]);
+ assert(!dp->dropped);
+ assert(dp->copy_blocks_path);
+
+ (void) partition_hint(p, context->node, &hint);
+
+ log_info("Pre-populating verity hash data of partition %s to calculate minimal partition size",
+ strna(hint));
+
+ if (!vt) {
+ r = var_tmp_dir(&vt);
+ if (r < 0)
+ return log_error_errno(r, "Could not determine temporary directory: %m");
+ }
+
+ r = tempfn_random_child(vt, "repart", &temp);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate temporary file path: %m");
+
+ fd = xopenat_full(
+ AT_FDCWD,
+ temp,
+ O_RDONLY|O_CLOEXEC|O_CREAT|O_NONBLOCK,
+ attrs & FS_NOCOW_FL ? XO_NOCOW : 0,
+ 0600);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to open temporary file %s: %m", temp);
+
+ r = partition_format_verity_hash(context, p, temp, dp->copy_blocks_path);
+ if (r < 0)
+ return r;
+
+ if (fstat(fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat temporary file: %m");
+
+ log_info("Minimal partition size of verity hash partition %s is %s",
+ strna(hint), FORMAT_BYTES(st.st_size));
+
+ p->copy_blocks_path = TAKE_PTR(temp);
+ p->copy_blocks_path_is_our_file = true;
+ p->copy_blocks_fd = TAKE_FD(fd);
+ p->copy_blocks_size = st.st_size;
+ }
+
+ return 0;
+}
+
+static int parse_partition_types(const char *p, GptPartitionType **partitions, size_t *n_partitions) {
+ int r;
+
+ assert(partitions);
+ assert(n_partitions);
+
+ for (;;) {
+ _cleanup_free_ char *name = NULL;
+ GptPartitionType type;
+
+ r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r == 0)
+ break;
+ if (r < 0)
+ return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p);
+
+ r = gpt_partition_type_from_string(name, &type);
+ if (r < 0)
+ return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name);
+
+ if (!GREEDY_REALLOC(*partitions, *n_partitions + 1))
+ return log_oom();
+
+ (*partitions)[(*n_partitions)++] = type;
+ }
+
+ return 0;
+}
+
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-repart", "8", &link);
+ if (r < 0)
+ return log_oom();
+
+ printf("%1$s [OPTIONS...] [DEVICE]\n"
+ "\n%5$sGrow and add partitions to a partition table, and generate disk images (DDIs).%6$s\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-legend Do not show the headers and footers\n"
+ "\n%3$sOperation:%4$s\n"
+ " --dry-run=BOOL Whether to run dry-run operation\n"
+ " --empty=MODE One of refuse, allow, require, force, create; controls\n"
+ " how to handle empty disks lacking partition tables\n"
+ " --offline=BOOL Whether to build the image offline\n"
+ " --discard=BOOL Whether to discard backing blocks for new partitions\n"
+ " --sector-size=SIZE Set the logical sector size for the image\n"
+ " --architecture=ARCH Set the generic architecture for the image\n"
+ " --size=BYTES Grow loopback file to specified size\n"
+ " --seed=UUID 128-bit seed UUID to derive all UUIDs from\n"
+ " --split=BOOL Whether to generate split artifacts\n"
+ "\n%3$sOutput:%4$s\n"
+ " --pretty=BOOL Whether to show pretty summary before doing changes\n"
+ " --json=pretty|short|off\n"
+ " Generate JSON output\n"
+ "\n%3$sFactory Reset:%4$s\n"
+ " --factory-reset=BOOL Whether to remove data partitions before recreating\n"
+ " them\n"
+ " --can-factory-reset Test whether factory reset is defined\n"
+ "\n%3$sConfiguration & Image Control:%4$s\n"
+ " --root=PATH Operate relative to root path\n"
+ " --image=PATH Operate relative to image file\n"
+ " --image-policy=POLICY\n"
+ " Specify disk image dissection policy\n"
+ " --definitions=DIR Find partition definitions in specified directory\n"
+ " --list-devices List candidate block devices to operate on\n"
+ "\n%3$sVerity:%4$s\n"
+ " --private-key=PATH|URI\n"
+ " Private key to use when generating verity roothash\n"
+ " signatures, or an engine or provider specific\n"
+ " designation if --private-key-source= is used\n"
+ " --private-key-source=file|provider:PROVIDER|engine:ENGINE\n"
+ " Specify how to use KEY for --private-key=. Allows\n"
+ " an OpenSSL engine/provider to be used when generating\n"
+ " verity roothash signatures\n"
+ " --certificate=PATH|URI\n"
+ " PEM certificate to use when generating verity roothash\n"
+ " signatures, or a provider specific designation if\n"
+ " --certificate-source= is used\n"
+ " --certificate-source=file|provider:PROVIDER\n"
+ " Specify how to interpret the certificate from\n"
+ " --certificate=. Allows the certificate to be loaded\n"
+ " from an OpenSSL provider\n"
+ "\n%3$sEncryption:%4$s\n"
+ " --key-file=PATH Key to use when encrypting partitions\n"
+ " --tpm2-device=PATH Path to TPM2 device node to use\n"
+ " --tpm2-device-key=PATH\n"
+ " Enroll a TPM2 device using its public key\n"
+ " --tpm2-seal-key-handle=HANDLE\n"
+ " Specify handle of key to use for sealing\n"
+ " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n"
+ " TPM2 PCR indexes to use for TPM2 enrollment\n"
+ " --tpm2-public-key=PATH\n"
+ " Enroll signed TPM2 PCR policy against PEM public key\n"
+ " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n"
+ " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n"
+ " --tpm2-pcrlock=PATH\n"
+ " Specify pcrlock policy to lock against\n"
+ "\n%3$sPartition Control:%4$s\n"
+ " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
+ " Ignore partitions not of the specified types\n"
+ " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
+ " Ignore partitions of the specified types\n"
+ " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n"
+ " Take partitions of the specified types into account\n"
+ " but don't populate them yet\n"
+ "\n%3$sCopying:%4$s\n"
+ " -s --copy-source=PATH Specify the primary source tree to copy files from\n"
+ " --copy-from=IMAGE Copy partitions from the given image(s)\n"
+ "\n%3$sDDI Profile:%4$s\n"
+ " -S --make-ddi=sysext Make a system extension DDI\n"
+ " -C --make-ddi=confext Make a configuration extension DDI\n"
+ " -P --make-ddi=portable Make a portable service DDI\n"
+ "\n%3$sAuxiliary Resource Generation:%4$s\n"
+ " --generate-fstab=PATH\n"
+ " Write fstab configuration to the given path\n"
+ " --generate-crypttab=PATH\n"
+ " Write crypttab configuration to the given path\n"
+ "\nSee the %2$s for details.\n",
+ program_invocation_short_name,
+ link,
+ ansi_underline(),
+ ansi_normal(),
+ ansi_highlight(),
+ ansi_normal());
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[], X509 **ret_certificate, EVP_PKEY **ret_private_key, OpenSSLAskPasswordUI **ret_ui) {
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_NO_LEGEND,
+ ARG_DRY_RUN,
+ ARG_EMPTY,
+ ARG_DISCARD,
+ ARG_FACTORY_RESET,
+ ARG_CAN_FACTORY_RESET,
+ ARG_ROOT,
+ ARG_IMAGE,
+ ARG_IMAGE_POLICY,
+ ARG_SEED,
+ ARG_PRETTY,
+ ARG_DEFINITIONS,
+ ARG_SIZE,
+ ARG_JSON,
+ ARG_KEY_FILE,
+ ARG_PRIVATE_KEY,
+ ARG_PRIVATE_KEY_SOURCE,
+ ARG_CERTIFICATE,
+ ARG_CERTIFICATE_SOURCE,
+ ARG_TPM2_DEVICE,
+ ARG_TPM2_DEVICE_KEY,
+ ARG_TPM2_SEAL_KEY_HANDLE,
+ ARG_TPM2_PCRS,
+ ARG_TPM2_PUBLIC_KEY,
+ ARG_TPM2_PUBLIC_KEY_PCRS,
+ ARG_TPM2_PCRLOCK,
+ ARG_SPLIT,
+ ARG_INCLUDE_PARTITIONS,
+ ARG_EXCLUDE_PARTITIONS,
+ ARG_DEFER_PARTITIONS,
+ ARG_SECTOR_SIZE,
+ ARG_SKIP_PARTITIONS,
+ ARG_ARCHITECTURE,
+ ARG_OFFLINE,
+ ARG_COPY_FROM,
+ ARG_MAKE_DDI,
+ ARG_GENERATE_FSTAB,
+ ARG_GENERATE_CRYPTTAB,
+ ARG_LIST_DEVICES,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
+ { "dry-run", required_argument, NULL, ARG_DRY_RUN },
+ { "empty", required_argument, NULL, ARG_EMPTY },
+ { "discard", required_argument, NULL, ARG_DISCARD },
+ { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET },
+ { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET },
+ { "root", required_argument, NULL, ARG_ROOT },
+ { "image", required_argument, NULL, ARG_IMAGE },
+ { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY },
+ { "seed", required_argument, NULL, ARG_SEED },
+ { "pretty", required_argument, NULL, ARG_PRETTY },
+ { "definitions", required_argument, NULL, ARG_DEFINITIONS },
+ { "size", required_argument, NULL, ARG_SIZE },
+ { "json", required_argument, NULL, ARG_JSON },
+ { "key-file", required_argument, NULL, ARG_KEY_FILE },
+ { "private-key", required_argument, NULL, ARG_PRIVATE_KEY },
+ { "private-key-source", required_argument, NULL, ARG_PRIVATE_KEY_SOURCE },
+ { "certificate", required_argument, NULL, ARG_CERTIFICATE },
+ { "certificate-source", required_argument, NULL, ARG_CERTIFICATE_SOURCE },
+ { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE },
+ { "tpm2-device-key", required_argument, NULL, ARG_TPM2_DEVICE_KEY },
+ { "tpm2-seal-key-handle", required_argument, NULL, ARG_TPM2_SEAL_KEY_HANDLE },
+ { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS },
+ { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY },
+ { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS },
+ { "tpm2-pcrlock", required_argument, NULL, ARG_TPM2_PCRLOCK },
+ { "split", required_argument, NULL, ARG_SPLIT },
+ { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS },
+ { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS },
+ { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS },
+ { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE },
+ { "architecture", required_argument, NULL, ARG_ARCHITECTURE },
+ { "offline", required_argument, NULL, ARG_OFFLINE },
+ { "copy-from", required_argument, NULL, ARG_COPY_FROM },
+ { "copy-source", required_argument, NULL, 's' },
+ { "make-ddi", required_argument, NULL, ARG_MAKE_DDI },
+ { "generate-fstab", required_argument, NULL, ARG_GENERATE_FSTAB },
+ { "generate-crypttab", required_argument, NULL, ARG_GENERATE_CRYPTTAB },
+ { "list-devices", no_argument, NULL, ARG_LIST_DEVICES },
+ {}
+ };
+
+ _cleanup_(X509_freep) X509 *certificate = NULL;
+ _cleanup_(openssl_ask_password_ui_freep) OpenSSLAskPasswordUI *ui = NULL;
+ _cleanup_(EVP_PKEY_freep) EVP_PKEY *private_key = NULL;
+ bool auto_hash_pcr_values = true, auto_public_key_pcr_mask = true, auto_pcrlock = true;
+ int c, r;
+
+ assert(argc >= 0);
+ assert(argv);
+ assert(ret_certificate);
+ assert(ret_private_key);
+ assert(ret_ui);
+
+ while ((c = getopt_long(argc, argv, "hs:SCP", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ return version();
+
+ case ARG_NO_PAGER:
+ arg_pager_flags |= PAGER_DISABLE;
+ break;
+
+ case ARG_NO_LEGEND:
+ arg_legend = false;
+ break;
+
+ case ARG_DRY_RUN:
+ r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_EMPTY:
+ if (isempty(optarg)) {
+ arg_empty = EMPTY_UNSET;
+ break;
+ }
+
+ arg_empty = empty_mode_from_string(optarg);
+ if (arg_empty < 0)
+ return log_error_errno(arg_empty, "Failed to parse --empty= parameter: %s", optarg);
+
+ break;
+
+ case ARG_DISCARD:
+ r = parse_boolean_argument("--discard=", optarg, &arg_discard);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_FACTORY_RESET:
+ r = parse_boolean_argument("--factory-reset=", optarg, NULL);
+ if (r < 0)
+ return r;
+ arg_factory_reset = r;
+ break;
+
+ case ARG_CAN_FACTORY_RESET:
+ arg_can_factory_reset = true;
+ break;
+
+ case ARG_ROOT:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_IMAGE:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_IMAGE_POLICY:
+ r = parse_image_policy_argument(optarg, &arg_image_policy);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_SEED:
+ if (isempty(optarg)) {
+ arg_seed = SD_ID128_NULL;
+ arg_randomize = false;
+ } else if (streq(optarg, "random"))
+ arg_randomize = true;
+ else {
+ r = sd_id128_from_string(optarg, &arg_seed);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse seed: %s", optarg);
+
+ arg_randomize = false;
+ }
+
+ break;
+
+ case ARG_PRETTY:
+ r = parse_boolean_argument("--pretty=", optarg, NULL);
+ if (r < 0)
+ return r;
+ arg_pretty = r;
+ break;
+
+ case ARG_DEFINITIONS: {
+ _cleanup_free_ char *path = NULL;
+ r = parse_path_argument(optarg, false, &path);
+ if (r < 0)
+ return r;
+ if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0)
+ return log_oom();
+ break;
+ }
+
+ case ARG_SIZE: {
+ uint64_t parsed, rounded;
+
+ if (streq(optarg, "auto")) {
+ arg_size = UINT64_MAX;
+ arg_size_auto = true;
+ break;
+ }
+
+ r = parse_size(optarg, 1024, &parsed);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg);
+
+ rounded = round_up_size(parsed, 4096);
+ if (rounded == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing.");
+ if (rounded == UINT64_MAX)
+ return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing.");
+
+ if (rounded != parsed)
+ log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")",
+ parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded);
+
+ arg_size = rounded;
+ arg_size_auto = false;
+ break;
+ }
+
+ case ARG_JSON:
+ r = parse_json_argument(optarg, &arg_json_format_flags);
+ if (r <= 0)
+ return r;
+
+ break;
+
+ case ARG_KEY_FILE: {
+ _cleanup_(erase_and_freep) char *k = NULL;
+ size_t n = 0;
+
+ r = read_full_file_full(
+ AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX,
+ READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET,
+ NULL,
+ &k, &n);
+ if (r < 0)
+ return log_error_errno(r, "Failed to read key file '%s': %m", optarg);
+
+ erase_and_free(arg_key);
+ arg_key = TAKE_PTR(k);
+ arg_key_size = n;
+ break;
+ }
+
+ case ARG_PRIVATE_KEY: {
+ r = free_and_strdup_warn(&arg_private_key, optarg);
+ if (r < 0)
+ return r;
+ break;
+ }
+
+ case ARG_PRIVATE_KEY_SOURCE:
+ r = parse_openssl_key_source_argument(
+ optarg,
+ &arg_private_key_source,
+ &arg_private_key_source_type);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_CERTIFICATE:
+ r = free_and_strdup_warn(&arg_certificate, optarg);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_CERTIFICATE_SOURCE:
+ r = parse_openssl_certificate_source_argument(
+ optarg,
+ &arg_certificate_source,
+ &arg_certificate_source_type);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_TPM2_DEVICE: {
+ _cleanup_free_ char *device = NULL;
+
+ if (streq(optarg, "list"))
+ return tpm2_list_devices();
+
+ if (!streq(optarg, "auto")) {
+ device = strdup(optarg);
+ if (!device)
+ return log_oom();
+ }
+
+ free(arg_tpm2_device);
+ arg_tpm2_device = TAKE_PTR(device);
+ break;
+ }
+
+ case ARG_TPM2_DEVICE_KEY:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_device_key);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_TPM2_SEAL_KEY_HANDLE:
+ r = safe_atou32_full(optarg, 16, &arg_tpm2_seal_key_handle);
+ if (r < 0)
+ return log_error_errno(r, "Could not parse TPM2 seal key handle index '%s': %m", optarg);
+
+ break;
+
+ case ARG_TPM2_PCRS:
+ auto_hash_pcr_values = false;
+ r = tpm2_parse_pcr_argument_append(optarg, &arg_tpm2_hash_pcr_values, &arg_tpm2_n_hash_pcr_values);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_TPM2_PUBLIC_KEY:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_TPM2_PUBLIC_KEY_PCRS:
+ auto_public_key_pcr_mask = false;
+ r = tpm2_parse_pcr_argument_to_mask(optarg, &arg_tpm2_public_key_pcr_mask);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_TPM2_PCRLOCK:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_pcrlock);
+ if (r < 0)
+ return r;
+
+ auto_pcrlock = false;
+ break;
+
+ case ARG_SPLIT:
+ r = parse_boolean_argument("--split=", optarg, NULL);
+ if (r < 0)
+ return r;
+
+ arg_split = r;
+ break;
+
+ case ARG_INCLUDE_PARTITIONS:
+ if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Combination of --include-partitions= and --exclude-partitions= is invalid.");
+
+ r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions);
+ if (r < 0)
+ return r;
+
+ arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE;
+
+ break;
+
+ case ARG_EXCLUDE_PARTITIONS:
+ if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Combination of --include-partitions= and --exclude-partitions= is invalid.");
+
+ r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions);
+ if (r < 0)
+ return r;
+
+ arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE;
+
+ break;
+
+ case ARG_DEFER_PARTITIONS:
+ r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_SECTOR_SIZE:
+ r = parse_sector_size(optarg, &arg_sector_size);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case ARG_ARCHITECTURE:
+ r = architecture_from_string(optarg);
+ if (r < 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid architecture '%s'.", optarg);
+
+ arg_architecture = r;
+ break;
+
+ case ARG_OFFLINE:
+ if (streq(optarg, "auto"))
+ arg_offline = -1;
+ else {
+ r = parse_boolean_argument("--offline=", optarg, NULL);
+ if (r < 0)
+ return r;
+
+ arg_offline = r;
+ }
+
+ break;
+
+ case ARG_COPY_FROM: {
+ _cleanup_free_ char *p = NULL;
+
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &p);
+ if (r < 0)
+ return r;
+
+ if (strv_consume(&arg_copy_from, TAKE_PTR(p)) < 0)
+ return log_oom();
+
+ break;
+ }
+
+ case 's':
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_copy_source);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_MAKE_DDI:
+ if (!filename_is_valid(optarg))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid DDI type: %s", optarg);
+
+ r = free_and_strdup_warn(&arg_make_ddi, optarg);
+ if (r < 0)
+ return r;
+ break;
+
+ case 'S':
+ r = free_and_strdup_warn(&arg_make_ddi, "sysext");
+ if (r < 0)
+ return r;
+ break;
+
+ case 'C':
+ r = free_and_strdup_warn(&arg_make_ddi, "confext");
+ if (r < 0)
+ return r;
+ break;
+
+ case 'P':
+ r = free_and_strdup_warn(&arg_make_ddi, "portable");
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_GENERATE_FSTAB:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_generate_fstab);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_GENERATE_CRYPTTAB:
+ r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_generate_crypttab);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_LIST_DEVICES:
+ r = blockdev_list(BLOCKDEV_LIST_REQUIRE_PARTITION_SCANNING|BLOCKDEV_LIST_SHOW_SYMLINKS|BLOCKDEV_LIST_IGNORE_ZRAM);
+ if (r < 0)
+ return r;
+
+ return 0;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached();
+ }
+
+ if (argc - optind > 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Expected at most one argument, the path to the block device or image file.");
+
+ if (arg_make_ddi) {
+ if (arg_definitions)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Combination of --make-ddi= and --definitions= is not supported.");
+ if (!IN_SET(arg_empty, EMPTY_UNSET, EMPTY_CREATE))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Combination of --make-ddi= and --empty=%s is not supported.", empty_mode_to_string(arg_empty));
+
+ /* Imply automatic sizing in DDI mode */
+ if (arg_size == UINT64_MAX)
+ arg_size_auto = true;
+
+ if (!arg_copy_source)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No --copy-source= specified, refusing.");
+
+ r = dir_is_empty(arg_copy_source, /* ignore_hidden_or_backup= */ false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine if '%s' is empty: %m", arg_copy_source);
+ if (r > 0)
+ return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "Source directory '%s' is empty, refusing to create empty image.", arg_copy_source);
+
+ if (sd_id128_is_null(arg_seed) && !arg_randomize) {
+ /* We don't want that /etc/machine-id leaks into any image built this way, hence
+ * let's randomize the seed if not specified explicitly */
+ log_notice("No seed value specified, randomizing generated UUIDs, resulting image will not be reproducible.");
+ arg_randomize = true;
+ }
+
+ arg_empty = EMPTY_CREATE;
+ }
+
+ if (arg_empty == EMPTY_UNSET) /* default to refuse mode, if not otherwise specified */
+ arg_empty = EMPTY_REFUSE;
+
+ if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid.");
+
+ if (arg_can_factory_reset)
+ arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence
+ * non-dry-run mode makes no sense. Thus, imply dry run mode so that we
+ * open things strictly read-only. */
+ else if (arg_empty == EMPTY_CREATE)
+ arg_dry_run = false; /* Imply --dry-run=no if we create the loopback file anew. After all we
+ * cannot really break anyone's partition tables that way. */
+
+ /* Disable pager once we are not just reviewing, but doing things. */
+ if (!arg_dry_run)
+ arg_pager_flags |= PAGER_DISABLE;
+
+ if (arg_empty == EMPTY_CREATE && arg_size == UINT64_MAX && !arg_size_auto)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "If --empty=create is specified, --size= must be specified, too.");
+
+ if (arg_image && arg_root)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
+ else if (!arg_image && !arg_root && in_initrd()) {
+
+ /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the
+ * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/
+ * is vendor-supplied but the root fs formatted on first boot. */
+ r = path_is_mount_point("/sysusr/usr");
+ if (r <= 0) {
+ if (r < 0 && r != -ENOENT)
+ log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m");
+
+ arg_root = strdup("/sysroot");
+ } else
+ arg_root = strdup("/sysusr");
+ if (!arg_root)
+ return log_oom();
+ }
+
+ if (argc > optind) {
+ arg_node = strdup(argv[optind]);
+ if (!arg_node)
+ return log_oom();
+ }
+
+ if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "A path to a device node or image file must be specified when --make-ddi=, --empty=force, --empty=require or --empty=create are used.");
+
+ if (arg_split && !arg_node)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "A path to an image file must be specified when --split is used.");
+
+ if (auto_pcrlock) {
+ assert(!arg_tpm2_pcrlock);
+
+ r = tpm2_pcrlock_search_file(NULL, NULL, &arg_tpm2_pcrlock);
+ if (r < 0) {
+ if (r != -ENOENT)
+ log_warning_errno(r, "Search for pcrlock.json failed, assuming it does not exist: %m");
+ } else
+ log_debug("Automatically using pcrlock policy '%s'.", arg_tpm2_pcrlock);
+ }
+
+ if (auto_public_key_pcr_mask) {
+ assert(arg_tpm2_public_key_pcr_mask == 0);
+ arg_tpm2_public_key_pcr_mask = INDEX_TO_MASK(uint32_t, TPM2_PCR_KERNEL_BOOT);
+ }
+
+ if (auto_hash_pcr_values && !arg_tpm2_pcrlock) { /* Only lock to PCR 7 if no pcr policy is specified. */
+ assert(arg_tpm2_n_hash_pcr_values == 0);
+
+ if (!GREEDY_REALLOC_APPEND(
+ arg_tpm2_hash_pcr_values,
+ arg_tpm2_n_hash_pcr_values,
+ &TPM2_PCR_VALUE_MAKE(TPM2_PCR_INDEX_DEFAULT, /* hash= */ 0, /* value= */ {}),
+ 1))
+ return log_oom();
+ }
+
+ if (arg_pretty < 0 && isatty_safe(STDOUT_FILENO))
+ arg_pretty = true;
+
+ if (arg_architecture >= 0) {
+ FOREACH_ARRAY(p, arg_filter_partitions, arg_n_filter_partitions)
+ *p = gpt_partition_type_override_architecture(*p, arg_architecture);
+
+ FOREACH_ARRAY(p, arg_defer_partitions, arg_n_defer_partitions)
+ *p = gpt_partition_type_override_architecture(*p, arg_architecture);
+ }
+
+ if (arg_certificate) {
+ if (arg_certificate_source_type == OPENSSL_CERTIFICATE_SOURCE_FILE) {
+ r = parse_path_argument(arg_certificate, /*suppress_root=*/ false, &arg_certificate);
+ if (r < 0)
+ return r;
+ }
+
+ r = openssl_load_x509_certificate(
+ arg_certificate_source_type,
+ arg_certificate_source,
+ arg_certificate,
+ &certificate);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load X.509 certificate from %s: %m", arg_certificate);
+ }
+
+ if (arg_private_key) {
+ if (arg_private_key_source_type == OPENSSL_KEY_SOURCE_FILE) {
+ r = parse_path_argument(arg_private_key, /*suppress_root=*/ false, &arg_private_key);
+ if (r < 0)
+ return r;
+ }
+
+ r = openssl_load_private_key(
+ arg_private_key_source_type,
+ arg_private_key_source,
+ arg_private_key,
+ &(AskPasswordRequest) {
+ .id = "repart-private-key-pin",
+ .keyring = arg_private_key,
+ .credential = "repart.private-key-pin",
+ },
+ &private_key,
+ &ui);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load private key from %s: %m", arg_private_key);
+ }
+
+ *ret_certificate = TAKE_PTR(certificate);
+ *ret_private_key = TAKE_PTR(private_key);
+ *ret_ui = TAKE_PTR(ui);
+
+ return 1;
+}
+
+static int parse_proc_cmdline_factory_reset(void) {
+ bool b;
+ int r;
+
+ if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */
+ return 0;
+
+ if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */
+ return 0;
+
+ r = proc_cmdline_get_bool("systemd.factory_reset", /* flags = */ 0, &b);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m");
+ if (r > 0) {
+ arg_factory_reset = b;
+
+ if (b)
+ log_notice("Honouring factory reset requested via kernel command line.");
+ }
+
+ return 0;
+}
+
+static int parse_efi_variable_factory_reset(void) {
+ _cleanup_free_ char *value = NULL;
+ int r;
+
+ if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */
+ return 0;
+
+ if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */
+ return 0;
+
+ r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE_STR("FactoryReset"), &value);
+ if (r < 0) {
+ if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
+ return 0;
+ return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m");
+ }
+
+ r = parse_boolean(value);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m");
+
+ arg_factory_reset = r;
+ if (r)
+ log_notice("Factory reset requested via EFI variable FactoryReset.");
+
+ return 0;
+}
+
+static int remove_efi_variable_factory_reset(void) {
+ int r;
+
+ r = efi_set_variable(EFI_SYSTEMD_VARIABLE_STR("FactoryReset"), NULL, 0);
+ if (r < 0) {
+ if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
+ return 0;
+ return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m");
+ }
+
+ log_info("Successfully unset EFI variable FactoryReset.");
+ return 0;
+}
+
+static int acquire_root_devno(
+ const char *p,
+ const char *root,
+ int mode,
+ char **ret,
+ int *ret_fd) {
+
+ _cleanup_free_ char *found_path = NULL, *node = NULL;
+ dev_t devno, fd_devno = MODE_INVALID;
+ _cleanup_close_ int fd = -EBADF;
+ struct stat st;
+ int r;
+
+ assert(p);
+ assert(ret);
+ assert(ret_fd);
+
+ fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path);
+ if (fd < 0)
+ return fd;
+
+ if (fstat(fd, &st) < 0)
+ return -errno;
+
+ if (S_ISREG(st.st_mode)) {
+ *ret = TAKE_PTR(found_path);
+ *ret_fd = TAKE_FD(fd);
+ return 0;
+ }
+
+ if (S_ISBLK(st.st_mode)) {
+ /* Refuse referencing explicit block devices if a root dir is specified, after all we should
+ * not be able to leave the image the root path constrains us to. */
+ if (root)
+ return -EPERM;
+
+ fd_devno = devno = st.st_rdev;
+ } else if (S_ISDIR(st.st_mode)) {
+
+ devno = st.st_dev;
+ if (major(devno) == 0) {
+ r = btrfs_get_block_device_fd(fd, &devno);
+ if (r == -ENOTTY) /* not btrfs */
+ return -ENODEV;
+ if (r < 0)
+ return r;
+ }
+ } else
+ return -ENOTBLK;
+
+ /* From dm-crypt to backing partition */
+ r = block_get_originating(devno, &devno);
+ if (r == -ENOENT)
+ log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p);
+ else if (r < 0)
+ log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p);
+
+ /* From partition to whole disk containing it */
+ r = block_get_whole_disk(devno, &devno);
+ if (r < 0)
+ log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p);
+
+ r = devname_from_devnum(S_IFBLK, devno, &node);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p);
+
+ /* Only if we still look at the same block device we can reuse the fd. Otherwise return an
+ * invalidated fd. */
+ if (fd_devno != MODE_INVALID && fd_devno == devno) {
+ /* Tell udev not to interfere while we are processing the device */
+ if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0)
+ return log_error_errno(errno, "Failed to lock device '%s': %m", node);
+
+ *ret_fd = TAKE_FD(fd);
+ } else
+ *ret_fd = -EBADF;
+
+ *ret = TAKE_PTR(node);
+ return 0;
+}
+
+static int find_root(Context *context) {
+ _cleanup_free_ char *device = NULL;
+ int r;
+
+ assert(context);
+
+ if (arg_node) {
+ if (arg_empty == EMPTY_CREATE) {
+ _cleanup_close_ int fd = -EBADF;
+ _cleanup_free_ char *s = NULL;
+
+ s = strdup(arg_node);
+ if (!s)
+ return log_oom();
+
+ fd = xopenat_full(AT_FDCWD, arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, XO_NOCOW, 0666);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to create '%s': %m", arg_node);
+
+ context->node = TAKE_PTR(s);
+ context->node_is_our_file = true;
+ context->backing_fd = TAKE_FD(fd);
+ return 0;
+ }
+
+ /* Note that we don't specify a root argument here: if the user explicitly configured a node
+ * we'll take it relative to the host, not the image */
+ r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd);
+ if (r == -EUCLEAN)
+ return btrfs_log_dev_root(LOG_ERR, r, arg_node);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node);
+
+ return 0;
+ }
+
+ assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW));
+
+ /* If the root mount has been replaced by some form of volatile file system (overlayfs), the
+ * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that
+ * here. */
+ r = readlink_malloc("/run/systemd/volatile-root", &device);
+ if (r == -ENOENT) { /* volatile-root not found */
+ /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The
+ * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device
+ * (think: volatile setups) */
+
+ FOREACH_STRING(p, "/", "/usr") {
+
+ r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node,
+ &context->backing_fd);
+ if (r < 0) {
+ if (r == -EUCLEAN)
+ return btrfs_log_dev_root(LOG_ERR, r, p);
+ if (r != -ENODEV)
+ return log_error_errno(r, "Failed to determine backing device of %s%s: %m", strempty(arg_root), p);
+ } else
+ return 0;
+ }
+ } else if (r < 0)
+ return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m");
+ else {
+ r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd);
+ if (r == -EUCLEAN)
+ return btrfs_log_dev_root(LOG_ERR, r, device);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device);
+
+ return 0;
+ }
+
+ return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device.");
+}
+
+static int resize_pt(int fd, uint64_t sector_size) {
+ _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
+ int r;
+
+ /* After resizing the backing file we need to resize the partition table itself too, so that it takes
+ * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and
+ * immediately write it again, with no changes. */
+
+ r = fdisk_new_context_at(fd, /* path= */ NULL, /* read_only= */ false, sector_size, &c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd));
+
+ r = fdisk_has_label(c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd));
+ if (r == 0) {
+ log_debug("Not resizing partition table, as there currently is none.");
+ return 0;
+ }
+
+ r = fdisk_write_disklabel(c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write resized partition table: %m");
+
+ log_info("Resized partition table.");
+ return 1;
+}
+
+static int resize_backing_fd(
+ const char *node, /* The primary way we access the disk image to operate on */
+ int *fd, /* An O_RDONLY fd referring to that inode */
+ const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */
+ LoopDevice *loop_device,
+ uint64_t sector_size) {
+
+ _cleanup_close_ int writable_fd = -EBADF;
+ uint64_t current_size;
+ struct stat st;
+ int r;
+
+ assert(node);
+ assert(fd);
+
+ if (arg_size == UINT64_MAX) /* Nothing to do */
+ return 0;
+
+ if (*fd < 0) {
+ /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to
+ * keep a reference to the file we can pass around. */
+ *fd = open(node, O_RDONLY|O_CLOEXEC);
+ if (*fd < 0)
+ return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node);
+ }
+
+ if (fstat(*fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat '%s': %m", node);
+
+ if (S_ISBLK(st.st_mode)) {
+ if (!backing_file)
+ return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node);
+
+ assert(loop_device);
+
+ r = blockdev_get_device_size(*fd, ¤t_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine size of block device %s: %m", node);
+ } else {
+ r = stat_verify_regular(&st);
+ if (r < 0)
+ return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node);
+
+ assert(!backing_file);
+ assert(!loop_device);
+ current_size = st.st_size;
+ }
+
+ if (current_size >= arg_size) {
+ log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)",
+ node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
+ return 0;
+ }
+
+ if (S_ISBLK(st.st_mode)) {
+ assert(backing_file);
+
+ /* This is a loopback device. We can't really grow those directly, but we can grow the
+ * backing file, hence let's do that. */
+
+ writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK);
+ if (writable_fd < 0)
+ return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file);
+
+ if (fstat(writable_fd, &st) < 0)
+ return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file);
+
+ r = stat_verify_regular(&st);
+ if (r < 0)
+ return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file);
+
+ if ((uint64_t) st.st_size != current_size)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Size of backing file '%s' of loopback block device '%s' don't match, refusing.",
+ node, backing_file);
+ } else {
+ assert(S_ISREG(st.st_mode));
+ assert(!backing_file);
+
+ /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We
+ * reopen the file for that temporarily. We keep the writable fd only open for this operation though,
+ * as fdisk can't accept it anyway. */
+
+ writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC);
+ if (writable_fd < 0)
+ return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node);
+ }
+
+ if (!arg_discard) {
+ if (fallocate(writable_fd, 0, 0, arg_size) < 0) {
+ if (!ERRNO_IS_NOT_SUPPORTED(errno))
+ return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m",
+ node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
+
+ /* Fallback to truncation, if fallocate() is not supported. */
+ log_debug("Backing file system does not support fallocate(), falling back to ftruncate().");
+ } else {
+ if (current_size == 0) /* Likely regular file just created by us */
+ log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node);
+ else
+ log_info("File '%s' grown from %s to %s by allocation.",
+ node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
+
+ goto done;
+ }
+ }
+
+ if (ftruncate(writable_fd, arg_size) < 0)
+ return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m",
+ node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
+
+ if (current_size == 0) /* Likely regular file just created by us */
+ log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size));
+ else
+ log_info("File '%s' grown from %s to %s by truncation.",
+ node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size));
+
+done:
+ r = resize_pt(writable_fd, sector_size);
+ if (r < 0)
+ return r;
+
+ if (loop_device) {
+ r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to update loop device size: %m");
+ }
+
+ return 1;
+}
+
+static int determine_auto_size(Context *c) {
+ uint64_t sum;
+
+ assert(c);
+
+ sum = round_up_size(GPT_METADATA_SIZE, 4096);
+
+ LIST_FOREACH(partitions, p, c->partitions) {
+ uint64_t m;
+
+ if (p->dropped || PARTITION_SUPPRESSED(p))
+ continue;
+
+ m = partition_min_size_with_padding(c, p);
+ if (m > UINT64_MAX - sum)
+ return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing.");
+
+ sum += m;
+ }
+
+ if (c->total != UINT64_MAX)
+ /* Image already allocated? Then show its size. */
+ log_info("Automatically determined minimal disk image size as %s, current image size is %s.",
+ FORMAT_BYTES(sum), FORMAT_BYTES(c->total));
+ else
+ /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */
+ log_info("Automatically determined minimal disk image size as %s.",
+ FORMAT_BYTES(sum));
+
+ arg_size = sum;
+ return 0;
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(X509_freep) X509 *certificate = NULL;
+ _cleanup_(openssl_ask_password_ui_freep) OpenSSLAskPasswordUI *ui = NULL;
+ _cleanup_(EVP_PKEY_freep) EVP_PKEY *private_key = NULL;
+ _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
+ _cleanup_(umount_and_freep) char *mounted_dir = NULL;
+ _cleanup_(context_freep) Context* context = NULL;
+ bool node_is_our_loop = false;
+ int r;
+
+ log_setup();
+
+ r = parse_argv(argc, argv, &certificate, &private_key, &ui);
+ if (r <= 0)
+ return r;
+
+ r = parse_proc_cmdline_factory_reset();
+ if (r < 0)
+ return r;
+
+ r = parse_efi_variable_factory_reset();
+ if (r < 0)
+ return r;
+
+#if HAVE_LIBCRYPTSETUP
+ cryptsetup_enable_logging(NULL);
+#endif
+
+ if (arg_image) {
+ assert(!arg_root);
+
+ /* Mount this strictly read-only: we shall modify the partition table, not the file
+ * systems */
+ r = mount_image_privately_interactively(
+ arg_image,
+ arg_image_policy,
+ DISSECT_IMAGE_MOUNT_READ_ONLY |
+ (arg_node ? DISSECT_IMAGE_DEVICE_READ_ONLY : 0) | /* If a different node to make changes to is specified let's open the device in read-only mode) */
+ DISSECT_IMAGE_GPT_ONLY |
+ DISSECT_IMAGE_RELAX_VAR_CHECK |
+ DISSECT_IMAGE_USR_NO_ROOT |
+ DISSECT_IMAGE_REQUIRE_ROOT |
+ DISSECT_IMAGE_ALLOW_USERSPACE_VERITY,
+ &mounted_dir,
+ /* ret_dir_fd= */ NULL,
+ &loop_device);
+ if (r < 0)
+ return r;
+
+ arg_root = strdup(mounted_dir);
+ if (!arg_root)
+ return log_oom();
+
+ if (!arg_node) {
+ arg_node = strdup(loop_device->node);
+ if (!arg_node)
+ return log_oom();
+
+ /* Remember that the device we are about to manipulate is actually the one we
+ * allocated here, and thus to increase its backing file we know what to do */
+ node_is_our_loop = true;
+ }
+ }
+
+ if (!arg_copy_source && arg_root) {
+ /* If no explicit copy source is specified, then use --root=/--image= */
+ arg_copy_source = strdup(arg_root);
+ if (!arg_copy_source)
+ return log_oom();
+ }
+
+ context = context_new(arg_seed, certificate, private_key);
+ if (!context)
+ return log_oom();
+
+ TAKE_PTR(certificate);
+ TAKE_PTR(private_key);
+
+ r = context_read_seed(context, arg_root);
+ if (r < 0)
+ return r;
+
+ r = context_copy_from(context);
+ if (r < 0)
+ return r;
+
+ if (arg_make_ddi) {
+ _cleanup_free_ char *d = NULL, *dp = NULL;
+ assert(!arg_definitions);
+
+ d = strjoin(arg_make_ddi, ".repart.d/");
+ if (!d)
+ return log_oom();
+
+ r = search_and_access(d, F_OK, NULL, CONF_PATHS_STRV("systemd/repart/definitions"), &dp);
+ if (r < 0)
+ return log_error_errno(r, "DDI type '%s' is not defined: %m", arg_make_ddi);
+
+ if (strv_consume(&arg_definitions, TAKE_PTR(dp)) < 0)
+ return log_oom();
+ } else
+ strv_uniq(arg_definitions);
+
+ r = context_read_definitions(context);
+ if (r < 0)
+ return r;
+
+ r = find_root(context);
+ if (r == -ENODEV)
+ return 76; /* Special return value which means "Root block device not found, so not doing
+ * anything". This isn't really an error when called at boot. */
+ if (r < 0)
+ return r;
+
+ if (arg_size != UINT64_MAX) {
+ r = resize_backing_fd(
+ context->node,
+ &context->backing_fd,
+ node_is_our_loop ? arg_image : NULL,
+ node_is_our_loop ? loop_device : NULL,
+ context->sector_size);
+ if (r < 0)
+ return r;
+ }
+
+ r = context_load_partition_table(context);
+ if (r == -EHWPOISON)
+ return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't
+ * really an error when called at boot. */
+ if (r < 0)
+ return r;
+ context->from_scratch = r > 0; /* Starting from scratch */
+
+ if (arg_can_factory_reset) {
+ r = context_can_factory_reset(context);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return EXIT_FAILURE;
+
+ return 0;
+ }
+
+ r = context_factory_reset(context);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ /* We actually did a factory reset! */
+ r = remove_efi_variable_factory_reset();
+ if (r < 0)
+ return r;
+
+ /* Reload the reduced partition table */
+ context_unload_partition_table(context);
+ r = context_load_partition_table(context);
+ if (r < 0)
+ return r;
+ }
+
+ /* Open all files to copy blocks from now, since we want to take their size into consideration */
+ r = context_open_copy_block_paths(
+ context,
+ loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */
+ arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */
+ (dev_t) -1); /* if neither is specified, make no restrictions */
+ if (r < 0)
+ return r;
+
+ /* Make sure each partition has a unique UUID and unique label */
+ r = context_acquire_partition_uuids_and_labels(context);
+ if (r < 0)
+ return r;
+
+ r = context_fstab(context);
+ if (r < 0)
+ return r;
+
+ r = context_crypttab(context);
+ if (r < 0)
+ return r;
+
+ r = context_update_verity_size(context);
+ if (r < 0)
+ return r;
+
+ r = context_minimize(context);
+ if (r < 0)
+ return r;
+
+ if (arg_size_auto) {
+ r = determine_auto_size(context);
+ if (r < 0)
+ return r;
+
+ /* Flush out everything again, and let's grow the file first, then start fresh */
+ context_unload_partition_table(context);
+
+ assert(arg_size != UINT64_MAX);
+ r = resize_backing_fd(
+ context->node,
+ &context->backing_fd,
+ node_is_our_loop ? arg_image : NULL,
+ node_is_our_loop ? loop_device : NULL,
+ context->sector_size);
+ if (r < 0)
+ return r;
+
+ r = context_load_partition_table(context);
+ if (r < 0)
+ return r;
+ }
+
+ /* First try to fit new partitions in, dropping by priority until it fits */
+ for (;;) {
+ uint64_t largest_free_area;
+
+ if (context_allocate_partitions(context, &largest_free_area))
+ break; /* Success! */
+
+ if (context_unmerge_and_allocate_partitions(context))
+ break; /* We had to un-suppress a supplement or few, but still success! */
+
+ if (context_drop_or_foreignize_one_priority(context))
+ continue; /* Still no luck. Let's drop a priority and try again. */
+
+ /* No more priorities left to drop. This configuration just doesn't fit on this disk... */
+ r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC),
+ "Can't fit requested partitions into available free space (%s), refusing.",
+ FORMAT_BYTES(largest_free_area));
+ determine_auto_size(context);
+ return r;
+ }
+
+ LIST_FOREACH(partitions, p, context->partitions) {
+ if (!p->supplement_for)
+ continue;
+
+ if (PARTITION_SUPPRESSED(p)) {
+ assert(!p->allocated_to_area);
+ p->dropped = true;
+
+ log_debug("Partition %s can be merged into %s, suppressing supplement.",
+ p->definition_path, p->supplement_for->definition_path);
+ } else if (PARTITION_EXISTS(p))
+ log_info("Partition %s already exists on disk, using supplement verbatim.",
+ p->definition_path);
+ else
+ log_info("Couldn't allocate partitions with %s merged into %s, using supplement verbatim.",
+ p->definition_path, p->supplement_for->definition_path);
+ }
+
+ /* Now assign free space according to the weight logic */
+ r = context_grow_partitions(context);
+ if (r < 0)
+ return r;
+
+ /* Now calculate where each new partition gets placed */
+ context_place_partitions(context);
+
+ (void) context_dump(context, /*late=*/ false);
+
+ r = context_write_partition_table(context);
+ if (r < 0)
+ return r;
+
+ r = context_split(context);
+ if (r < 0)
+ return r;
+
+ (void) context_dump(context, /*late=*/ true);
+
+ context->node = mfree(context->node);
+
+ LIST_FOREACH(partitions, p, context->partitions)
+ p->split_path = mfree(p->split_path);
+
+ return 0;
+}
+
+DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
projects / systemd / .git / commitdiff