../../udev/lib/libudev.c \
../../udev/lib/libudev-list.c \
../../udev/lib/libudev-util.c \
- ../../udev/udev_utils.c
+ ../../udev/udev-util.c
if USE_SELINUX
create_floppy_devices_SOURCES += \
- ../../udev/udev_selinux.c
+ ../../udev/udev-selinux.c
create_floppy_devices_LDADD = \
$(SELINUX_LIBS)
endif
common_files = \
udev.h \
- udev_rules.h \
- udev_sysdeps.h \
- udev_device_event.c \
- udev_node.c \
- udev_rules.c \
- udev_rules_parse.c \
- udev_utils.c \
- udev_utils_file.c \
+ udev-rules.h \
+ udev-sysdeps.h \
+ udev-event.c \
+ udev-node.c \
+ udev-rules.c \
+ udev-rules-parse.c \
+ udev-util.c \
+ udev-util-file.c \
list.h \
lib/libudev.h \
lib/libudev-private.h \
if USE_SELINUX
common_files += \
- udev_selinux.c
+ udev-selinux.c
common_ldadd += \
$(SELINUX_LIBS)
endif
#include <grp.h>
#include "udev.h"
-#include "udev_rules.h"
+#include "udev-rules.h"
static void asmlinkage sig_handler(int signum)
{
--- /dev/null
+/*
+ * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <linux/sockios.h>
+
+#include "udev.h"
+#include "udev-rules.h"
+
+struct udev_event *udev_event_new(struct udev_device *dev)
+{
+ struct udev_event *event;
+
+ event = malloc(sizeof(struct udev_event));
+ if (event == NULL)
+ return NULL;
+ memset(event, 0x00, sizeof(struct udev_event));
+
+ event->dev = dev;
+ event->udev = udev_device_get_udev(dev);
+ udev_list_init(&event->run_list);
+ event->mode = 0660;
+ util_strlcpy(event->owner, "0", sizeof(event->owner));
+ util_strlcpy(event->group, "0", sizeof(event->group));
+
+ dbg(event->udev, "allocated event %p\n", event);
+ return event;
+}
+
+void udev_event_unref(struct udev_event *event)
+{
+ udev_list_cleanup(event->udev, &event->run_list);
+ dbg(event->udev, "free event %p\n", event);
+ free(event);
+}
+
+static void kernel_log(struct ifreq ifr)
+{
+ int klog;
+ FILE *f;
+
+ klog = open("/dev/kmsg", O_WRONLY);
+ if (klog < 0)
+ return;
+
+ f = fdopen(klog, "w");
+ if (f == NULL) {
+ close(klog);
+ return;
+ }
+
+ fprintf(f, "<6>udev: renamed network interface %s to %s\n",
+ ifr.ifr_name, ifr.ifr_newname);
+ fclose(f);
+}
+
+static int rename_netif(struct udev_event *event)
+{
+ struct udev_device *dev = event->dev;
+ int sk;
+ struct ifreq ifr;
+ int err;
+
+ info(event->udev, "changing net interface name from '%s' to '%s'\n",
+ udev_device_get_sysname(dev), event->name);
+ if (event->test)
+ return 0;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0) {
+ err(event->udev, "error opening socket: %m\n");
+ return -1;
+ }
+
+ memset(&ifr, 0x00, sizeof(struct ifreq));
+ util_strlcpy(ifr.ifr_name, udev_device_get_sysname(dev), IFNAMSIZ);
+ util_strlcpy(ifr.ifr_newname, event->name, IFNAMSIZ);
+ err = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (err == 0)
+ kernel_log(ifr);
+ else {
+ int loop;
+
+ /* see if the destination interface name already exists */
+ if (errno != EEXIST) {
+ err(event->udev, "error changing netif name %s to %s: %m\n",
+ ifr.ifr_name, ifr.ifr_newname);
+ goto exit;
+ }
+
+ /* free our own name, another process may wait for us */
+ util_strlcpy(ifr.ifr_newname, udev_device_get_sysname(dev), IFNAMSIZ);
+ util_strlcat(ifr.ifr_newname, "_rename", IFNAMSIZ);
+ err = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (err != 0) {
+ err(event->udev, "error changing netif name %s to %s: %m\n",
+ ifr.ifr_name, ifr.ifr_newname);
+ goto exit;
+ }
+
+ /* wait 30 seconds for our target to become available */
+ util_strlcpy(ifr.ifr_name, ifr.ifr_newname, IFNAMSIZ);
+ util_strlcpy(ifr.ifr_newname, udev_device_get_devnode(dev), IFNAMSIZ);
+ loop = 30 * 20;
+ while (loop--) {
+ err = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (err == 0) {
+ kernel_log(ifr);
+ break;
+ }
+
+ if (errno != EEXIST) {
+ err(event->udev, "error changing net interface name %s to %s: %m\n",
+ ifr.ifr_name, ifr.ifr_newname);
+ break;
+ }
+ dbg(event->udev, "wait for netif '%s' to become free, loop=%i\n",
+ udev_device_get_devnode(dev), (30 * 20) - loop);
+ usleep(1000 * 1000 / 20);
+ }
+ }
+
+exit:
+ close(sk);
+ return err;
+}
+
+int udev_event_run(struct udev_event *event, struct udev_rules *rules)
+{
+ struct udev_device *dev = event->dev;
+ int err = 0;
+
+ if (udev_device_get_devpath_old(dev) != NULL) {
+ if (udev_device_rename_db(dev, udev_device_get_devpath(dev)) == 0)
+ info(event->udev, "moved database from '%s' to '%s'\n",
+ udev_device_get_devpath_old(dev), udev_device_get_devpath(dev));
+ }
+
+ /* add device node */
+ if (major(udev_device_get_devnum(dev)) != 0 &&
+ (strcmp(udev_device_get_action(dev), "add") == 0 || strcmp(udev_device_get_action(dev), "change") == 0)) {
+ char filename[UTIL_PATH_SIZE];
+ struct udev_device *dev_old;
+
+ dbg(event->udev, "device node add '%s'\n", udev_device_get_devpath(dev));
+
+ udev_rules_get_name(rules, event);
+ if (event->ignore_device) {
+ info(event->udev, "device event will be ignored\n");
+ goto exit;
+ }
+
+ if (event->name[0] == '\0') {
+ info(event->udev, "device node creation supressed\n");
+ goto exit;
+ }
+
+ /* set device node name */
+ util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, event->name, sizeof(filename));
+ udev_device_set_devnode(dev, filename);
+
+ /* read current database entry; cleanup, if it is known device */
+ dev_old = udev_device_new_from_syspath(event->udev, udev_device_get_syspath(dev));
+ if (dev_old != NULL) {
+ info(event->udev, "device '%s' already in database, updating\n",
+ udev_device_get_devpath(dev));
+ udev_node_update_old_links(dev, dev_old, event->test);
+ udev_device_unref(dev_old);
+ }
+
+ udev_device_update_db(dev);
+
+ err = udev_node_add(dev, event->mode, event->owner, event->group, event->test);
+ if (err != 0)
+ goto exit;
+
+ goto exit;
+ }
+
+ /* add netif */
+ if (strcmp(udev_device_get_subsystem(dev), "net") == 0 && strcmp(udev_device_get_action(dev), "add") == 0) {
+ dbg(event->udev, "netif add '%s'\n", udev_device_get_devpath(dev));
+
+ udev_rules_get_name(rules, event);
+ if (event->ignore_device) {
+ info(event->udev, "device event will be ignored\n");
+ goto exit;
+ }
+ if (event->name[0] == '\0') {
+ info(event->udev, "device renaming supressed\n");
+ goto exit;
+ }
+
+ /* look if we want to change the name of the netif */
+ if (strcmp(event->name, udev_device_get_sysname(dev)) != 0) {
+ char syspath[UTIL_PATH_SIZE];
+ char *pos;
+
+ err = rename_netif(event);
+ if (err != 0)
+ goto exit;
+ info(event->udev, "renamed netif to '%s'\n", event->name);
+
+ /* remember old name */
+ udev_device_add_property(dev, "INTERFACE_OLD", udev_device_get_sysname(dev));
+
+ /* now change the devpath, because the kernel device name has changed */
+ util_strlcpy(syspath, udev_device_get_syspath(dev), sizeof(syspath));
+ pos = strrchr(syspath, '/');
+ if (pos != NULL) {
+ pos[1] = '\0';
+ util_strlcat(syspath, event->name, sizeof(syspath));
+ udev_device_set_syspath(event->dev, syspath);
+ udev_device_add_property(dev, "INTERFACE", udev_device_get_sysname(dev));
+ info(event->udev, "changed devpath to '%s'\n", udev_device_get_devpath(dev));
+ }
+ }
+ goto exit;
+ }
+
+ /* remove device node */
+ if (major(udev_device_get_devnum(dev)) != 0 && strcmp(udev_device_get_action(dev), "remove") == 0) {
+ /* import database entry and delete it */
+ udev_device_read_db(dev);
+ if (!event->test)
+ udev_device_delete_db(dev);
+
+ if (udev_device_get_devnode(dev) == NULL) {
+ char devnode[UTIL_PATH_SIZE];
+
+ info(event->udev, "'%s' not found in database, using kernel name '%s'\n",
+ udev_device_get_syspath(dev), udev_device_get_sysname(dev));
+ util_strlcpy(devnode, udev_get_dev_path(event->udev), sizeof(devnode));
+ util_strlcat(devnode, "/", sizeof(devnode));
+ util_strlcat(devnode, udev_device_get_sysname(dev), sizeof(devnode));
+ udev_device_set_devnode(dev, devnode);
+ }
+
+ udev_rules_get_run(rules, event);
+ if (event->ignore_device) {
+ info(event->udev, "device event will be ignored\n");
+ goto exit;
+ }
+
+ if (udev_device_get_ignore_remove(dev)) {
+ info(event->udev, "ignore_remove for '%s'\n", udev_device_get_devnode(dev));
+ goto exit;
+ }
+
+ err = udev_node_remove(dev, event->test);
+ goto exit;
+ }
+
+ /* default devices */
+ udev_rules_get_run(rules, event);
+ if (event->ignore_device)
+ info(event->udev, "device event will be ignored\n");
+exit:
+ return err;
+}
--- /dev/null
+/*
+ * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <grp.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "udev.h"
+#include "udev-rules.h"
+
+#define TMP_FILE_EXT ".udev-tmp"
+
+/* reverse mapping from the device file name to the devpath */
+static int name_index(struct udev *udev, const char *devpath, const char *name, int add, int test)
+{
+ char device[UTIL_PATH_SIZE];
+ char filename[UTIL_PATH_SIZE * 2];
+ size_t devlen = strlen(udev_get_dev_path(udev))+1;
+ size_t start;
+ int fd;
+
+ /* directory with device name */
+ util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
+ start = util_strlcat(filename, "/.udev/names/", sizeof(filename));
+ util_strlcat(filename, &name[devlen], sizeof(filename));
+ util_path_encode(&filename[start], sizeof(filename) - start);
+ /* entry with the devpath */
+ util_strlcpy(device, devpath, sizeof(device));
+ util_path_encode(device, sizeof(device));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, device, sizeof(filename));
+
+ if (add) {
+ info(udev, "creating index: '%s'\n", filename);
+ create_path(udev, filename);
+ fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
+ if (fd > 0)
+ close(fd);
+ } else {
+ info(udev, "removing index: '%s'\n", filename);
+ unlink(filename);
+ delete_path(udev, filename);
+ }
+ return 0;
+}
+
+int udev_node_mknod(struct udev_device *dev, const char *file, dev_t devnum, mode_t mode, uid_t uid, gid_t gid)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ char file_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
+ struct stat stats;
+ int preserve = 0;
+ int err = 0;
+
+ if (major(devnum) == 0)
+ devnum = udev_device_get_devnum(dev);
+
+ if (strcmp(udev_device_get_subsystem(dev), "block") == 0)
+ mode |= S_IFBLK;
+ else
+ mode |= S_IFCHR;
+
+ if (file == NULL)
+ file = udev_device_get_devnode(dev);
+
+ if (lstat(file, &stats) == 0) {
+ if (((stats.st_mode & S_IFMT) == (mode & S_IFMT)) && (stats.st_rdev == devnum)) {
+ info(udev, "preserve file '%s', because it has correct dev_t\n", file);
+ preserve = 1;
+ udev_selinux_lsetfilecon(udev, file, mode);
+ } else {
+ info(udev, "atomically replace existing file '%s'\n", file);
+ util_strlcpy(file_tmp, file, sizeof(file_tmp));
+ util_strlcat(file_tmp, TMP_FILE_EXT, sizeof(file_tmp));
+ unlink(file_tmp);
+ udev_selinux_setfscreatecon(udev, file_tmp, mode);
+ err = mknod(file_tmp, mode, devnum);
+ udev_selinux_resetfscreatecon(udev);
+ if (err != 0) {
+ err(udev, "mknod(%s, %#o, %u, %u) failed: %m\n",
+ file_tmp, mode, major(devnum), minor(devnum));
+ goto exit;
+ }
+ err = rename(file_tmp, file);
+ if (err != 0) {
+ err(udev, "rename(%s, %s) failed: %m\n", file_tmp, file);
+ unlink(file_tmp);
+ }
+ }
+ } else {
+ info(udev, "mknod(%s, %#o, (%u,%u))\n", file, mode, major(devnum), minor(devnum));
+ udev_selinux_setfscreatecon(udev, file, mode);
+ err = mknod(file, mode, devnum);
+ udev_selinux_resetfscreatecon(udev);
+ if (err != 0) {
+ err(udev, "mknod(%s, %#o, (%u,%u) failed: %m\n", file, mode, major(devnum), minor(devnum));
+ goto exit;
+ }
+ }
+
+ if (!preserve || stats.st_mode != mode) {
+ info(udev, "chmod(%s, %#o)\n", file, mode);
+ err = chmod(file, mode);
+ if (err != 0) {
+ err(udev, "chmod(%s, %#o) failed: %m\n", file, mode);
+ goto exit;
+ }
+ }
+
+ if (!preserve || stats.st_uid != uid || stats.st_gid != gid) {
+ info(udev, "chown(%s, %u, %u)\n", file, uid, gid);
+ err = chown(file, uid, gid);
+ if (err != 0) {
+ err(udev, "chown(%s, %u, %u) failed: %m\n", file, uid, gid);
+ goto exit;
+ }
+ }
+exit:
+ return err;
+}
+
+static int node_symlink(struct udev *udev, const char *node, const char *slink)
+{
+ struct stat stats;
+ char target[UTIL_PATH_SIZE] = "";
+ char slink_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
+ int i = 0;
+ int tail = 0;
+ int len;
+ int err = 0;
+
+ /* use relative link */
+ while (node[i] && (node[i] == slink[i])) {
+ if (node[i] == '/')
+ tail = i+1;
+ i++;
+ }
+ while (slink[i] != '\0') {
+ if (slink[i] == '/')
+ util_strlcat(target, "../", sizeof(target));
+ i++;
+ }
+ util_strlcat(target, &node[tail], sizeof(target));
+
+ /* preserve link with correct target, do not replace node of other device */
+ if (lstat(slink, &stats) == 0) {
+ if (S_ISBLK(stats.st_mode) || S_ISCHR(stats.st_mode)) {
+ struct stat stats2;
+
+ info(udev, "found existing node instead of symlink '%s'\n", slink);
+ if (lstat(node, &stats2) == 0) {
+ if ((stats.st_mode & S_IFMT) == (stats2.st_mode & S_IFMT) &&
+ stats.st_rdev == stats2.st_rdev) {
+ info(udev, "replace device node '%s' with symlink to our node '%s'\n",
+ slink, node);
+ } else {
+ err(udev, "device node '%s' already exists, "
+ "link to '%s' will not overwrite it\n",
+ slink, node);
+ goto exit;
+ }
+ }
+ } else if (S_ISLNK(stats.st_mode)) {
+ char buf[UTIL_PATH_SIZE];
+
+ info(udev, "found existing symlink '%s'\n", slink);
+ len = readlink(slink, buf, sizeof(buf));
+ if (len > 0) {
+ buf[len] = '\0';
+ if (strcmp(target, buf) == 0) {
+ info(udev, "preserve already existing symlink '%s' to '%s'\n",
+ slink, target);
+ udev_selinux_lsetfilecon(udev, slink, S_IFLNK);
+ goto exit;
+ }
+ }
+ }
+ } else {
+ info(udev, "creating symlink '%s' to '%s'\n", slink, target);
+ udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
+ err = symlink(target, slink);
+ udev_selinux_resetfscreatecon(udev);
+ if (err == 0)
+ goto exit;
+ }
+
+ info(udev, "atomically replace '%s'\n", slink);
+ util_strlcpy(slink_tmp, slink, sizeof(slink_tmp));
+ util_strlcat(slink_tmp, TMP_FILE_EXT, sizeof(slink_tmp));
+ unlink(slink_tmp);
+ udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
+ err = symlink(target, slink_tmp);
+ udev_selinux_resetfscreatecon(udev);
+ if (err != 0) {
+ err(udev, "symlink(%s, %s) failed: %m\n", target, slink_tmp);
+ goto exit;
+ }
+ err = rename(slink_tmp, slink);
+ if (err != 0) {
+ err(udev, "rename(%s, %s) failed: %m\n", slink_tmp, slink);
+ unlink(slink_tmp);
+ goto exit;
+ }
+exit:
+ return err;
+}
+
+static int get_devices_by_name(struct udev *udev, const char *name, struct list_head *name_list)
+{
+ char dirname[PATH_MAX];
+ size_t devlen = strlen(udev_get_dev_path(udev))+1;
+ size_t start;
+ DIR *dir;
+ int count = 0;
+
+ util_strlcpy(dirname, udev_get_dev_path(udev), sizeof(dirname));
+ start = util_strlcat(dirname, "/.udev/names/", sizeof(dirname));
+ util_strlcat(dirname, &name[devlen], sizeof(dirname));
+ util_path_encode(&dirname[start], sizeof(dirname) - start);
+
+ dir = opendir(dirname);
+ if (dir == NULL) {
+ info(udev, "no index directory '%s': %m\n", dirname);
+ count = -1;
+ goto out;
+ }
+
+ info(udev, "found index directory '%s'\n", dirname);
+ while (1) {
+ struct dirent *ent;
+ char device[UTIL_PATH_SIZE];
+
+ ent = readdir(dir);
+ if (ent == NULL || ent->d_name[0] == '\0')
+ break;
+ if (ent->d_name[0] == '.')
+ continue;
+
+ util_strlcpy(device, udev_get_sys_path(udev), sizeof(device));
+ util_strlcat(device, ent->d_name, sizeof(device));
+ util_path_decode(device);
+ name_list_add(udev, name_list, device, 0);
+ count++;
+ }
+ closedir(dir);
+out:
+ return count;
+}
+
+static int update_link(struct udev_device *dev, const char *slink, int test)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ LIST_HEAD(name_list);
+ struct name_entry *device;
+ char target[UTIL_PATH_SIZE] = "";
+ int count;
+ int priority = 0;
+ int rc = 0;
+
+ info(udev, "update symlink '%s' of '%s'\n", slink, udev_device_get_syspath(dev));
+
+ count = get_devices_by_name(udev, slink, &name_list);
+ info(udev, "found %i devices with name '%s'\n", count, slink);
+
+ /* if we don't have a reference, delete it */
+ if (count <= 0) {
+ info(udev, "no reference left, remove '%s'\n", slink);
+ if (!test) {
+ unlink(slink);
+ delete_path(udev, slink);
+ }
+ goto out;
+ }
+
+ /* find the device with the highest priority */
+ list_for_each_entry(device, &name_list, node) {
+ struct udev_device *dev_db;
+ const char *devnode;
+
+ info(udev, "found '%s' for '%s'\n", device->name, slink);
+
+ /* did we find ourself? we win, if we have the same priority */
+ if (strcmp(udev_device_get_syspath(dev), device->name) == 0) {
+ info(udev, "compare (our own) priority of '%s' %i >= %i\n",
+ udev_device_get_devpath(dev), udev_device_get_devlink_priority(dev), priority);
+ if (strcmp(udev_device_get_devnode(dev), slink) == 0) {
+ info(udev, "'%s' is our device node, database inconsistent, skip link update\n",
+ udev_device_get_devnode(dev));
+ } else if (target[0] == '\0' || udev_device_get_devlink_priority(dev) >= priority) {
+ priority = udev_device_get_devlink_priority(dev);
+ util_strlcpy(target, udev_device_get_devnode(dev), sizeof(target));
+ }
+ continue;
+ }
+
+ /* another device, read priority from database */
+ dev_db = udev_device_new_from_syspath(udev, device->name);
+ if (dev_db == NULL)
+ continue;
+ devnode = udev_device_get_devnode(dev_db);
+ if (devnode != NULL) {
+ if (strcmp(devnode, slink) == 0) {
+ info(udev, "'%s' is a device node of '%s', skip link update\n",
+ devnode, device->name);
+ } else {
+ info(udev, "compare priority of '%s' %i > %i\n",
+ udev_device_get_devpath(dev_db),
+ udev_device_get_devlink_priority(dev_db),
+ priority);
+ if (target[0] == '\0' || udev_device_get_devlink_priority(dev_db) > priority) {
+ priority = udev_device_get_devlink_priority(dev_db);
+ util_strlcpy(target, devnode, sizeof(target));
+ }
+ }
+ }
+ udev_device_unref(dev_db);
+ }
+ name_list_cleanup(udev, &name_list);
+
+ if (target[0] == '\0') {
+ info(udev, "no current target for '%s' found\n", slink);
+ rc = 1;
+ goto out;
+ }
+
+ /* create symlink to the target with the highest priority */
+ info(udev, "'%s' with target '%s' has the highest priority %i, create it\n", slink, target, priority);
+ if (!test) {
+ create_path(udev, slink);
+ node_symlink(udev, target, slink);
+ }
+out:
+ return rc;
+}
+
+void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old, int test)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ struct udev_list_entry *list_entry;
+ const char *devnode_old;
+
+ /* update possible left-over symlinks */
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev_old)) {
+ struct udev_list_entry *list_entry_current;
+
+ udev_list_entry_foreach(list_entry_current, udev_device_get_devlinks_list_entry(dev)) {
+ if (strcmp(udev_list_entry_get_name(list_entry_current),
+ udev_list_entry_get_name(list_entry)) == 0)
+ continue;
+ }
+ /* link does no longer belong to this device */
+ info(udev, "update old symlink '%s' no longer belonging to '%s'\n",
+ udev_list_entry_get_name(list_entry), udev_device_get_devpath(dev));
+ update_link(dev, udev_list_entry_get_name(list_entry), test);
+ }
+
+ /*
+ * if the node name has changed, delete the node,
+ * and possibly restore a symlink of another device
+ */
+ devnode_old = udev_device_get_devnode(dev_old);
+ if (devnode_old != NULL) {
+ const char *devnode = udev_device_get_devnode(dev);
+
+ if (devnode != NULL && strcmp(devnode_old, devnode) != 0)
+ update_link(dev, devnode_old, test);
+ }
+}
+
+int udev_node_add(struct udev_device *dev, mode_t mode, const char *owner, const char *group, int test)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ uid_t uid;
+ gid_t gid;
+ int i;
+ int num;
+ struct udev_list_entry *list_entry;
+ int err = 0;
+
+ create_path(udev, udev_device_get_devnode(dev));
+
+ if (strcmp(owner, "root") == 0)
+ uid = 0;
+ else {
+ char *endptr;
+ unsigned long id;
+
+ id = strtoul(owner, &endptr, 10);
+ if (endptr[0] == '\0')
+ uid = (uid_t) id;
+ else
+ uid = lookup_user(udev, owner);
+ }
+
+ if (strcmp(group, "root") == 0)
+ gid = 0;
+ else {
+ char *endptr;
+ unsigned long id;
+
+ id = strtoul(group, &endptr, 10);
+ if (endptr[0] == '\0')
+ gid = (gid_t) id;
+ else
+ gid = lookup_group(udev, group);
+ }
+
+ info(udev, "creating device node '%s', devnum=%d:%d, mode=%#o, uid=%d, gid=%d\n",
+ udev_device_get_devnode(dev),
+ major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)),
+ mode, uid, gid);
+
+ if (!test)
+ if (udev_node_mknod(dev, NULL, makedev(0,0), mode, uid, gid) != 0) {
+ err = -1;
+ goto exit;
+ }
+
+ /* create all_partitions if requested */
+ num = udev_device_get_num_fake_partitions(dev);
+ if (num > 0) {
+ info(udev, "creating device partition nodes '%s[1-%i]'\n", udev_device_get_devnode(dev), num);
+ if (!test) {
+ for (i = 1; i <= num; i++) {
+ char partitionname[UTIL_PATH_SIZE];
+ dev_t part_devnum;
+
+ snprintf(partitionname, sizeof(partitionname), "%s%d",
+ udev_device_get_devnode(dev), i);
+ partitionname[sizeof(partitionname)-1] = '\0';
+ part_devnum = makedev(major(udev_device_get_devnum(dev)),
+ minor(udev_device_get_devnum(dev)) + i);
+ udev_node_mknod(dev, partitionname, part_devnum, mode, uid, gid);
+ }
+ }
+ }
+
+ /* add node and to name index */
+ name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 1, test);
+
+ /* create/update symlinks, add symlinks to name index */
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
+ name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 1, test);
+ update_link(dev, udev_list_entry_get_name(list_entry), test);
+ }
+exit:
+ return err;
+}
+
+extern int udev_node_remove(struct udev_device *dev, int test)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ struct udev_list_entry *list_entry;
+ const char *devnode;
+ char partitionname[UTIL_PATH_SIZE];
+ struct stat stats;
+ int err = 0;
+ int num;
+
+ /* remove node from name index */
+ name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 0, test);
+
+ /* remove,update symlinks, remove symlinks from name index */
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
+ name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 0, test);
+ update_link(dev, udev_list_entry_get_name(list_entry), test);
+ }
+
+ devnode = udev_device_get_devnode(dev);
+ if (devnode == NULL)
+ return 0;
+ if (stat(devnode, &stats) != 0) {
+ info(udev, "device node '%s' not found\n", devnode);
+ return 0;
+ }
+ if (stats.st_rdev != udev_device_get_devnum(dev)) {
+ info(udev, "device node '%s' points to a different device, skip removal\n", devnode);
+ return -1;
+ }
+
+ info(udev, "removing device node '%s'\n", devnode);
+ if (!test)
+ err = unlink_secure(udev, devnode);
+ if (err)
+ return err;
+
+ num = udev_device_get_num_fake_partitions(dev);
+ if (num > 0) {
+ int i;
+
+ info(udev, "removing all_partitions '%s[1-%i]'\n", devnode, num);
+ if (num > 255)
+ return -1;
+ for (i = 1; i <= num; i++) {
+ snprintf(partitionname, sizeof(partitionname), "%s%d", devnode, i);
+ partitionname[sizeof(partitionname)-1] = '\0';
+ if (!test)
+ unlink_secure(udev, partitionname);
+ }
+ }
+ delete_path(udev, devnode);
+ return err;
+}
--- /dev/null
+/*
+ * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+#include "udev.h"
+#include "udev-rules.h"
+
+
+void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules)
+{
+ dbg(rules->udev, "bufsize=%zi\n", rules->bufsize);
+ iter->rules = rules;
+ iter->current = 0;
+}
+
+struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter)
+{
+ struct udev_rules *rules;
+ struct udev_rule *rule;
+
+ rules = iter->rules;
+ if (!rules)
+ return NULL;
+
+ dbg(rules->udev, "current=%zi\n", iter->current);
+ if (iter->current >= rules->bufsize) {
+ dbg(rules->udev, "no more rules\n");
+ return NULL;
+ }
+
+ /* get next rule */
+ rule = (struct udev_rule *) (rules->buf + iter->current);
+ iter->current += sizeof(struct udev_rule) + rule->bufsize;
+
+ return rule;
+}
+
+struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off)
+{
+ struct udev_rules *rules = iter->rules;
+ struct udev_rule *rule;
+
+ dbg(rules->udev, "current=%zi\n", iter->current);
+ iter->current = rule_off;
+ rule = (struct udev_rule *) (rules->buf + iter->current);
+
+ return rule;
+}
+
+static size_t find_label(const struct udev_rules_iter *iter, const char *label)
+{
+ struct udev_rule *rule;
+ struct udev_rules *rules = iter->rules;
+ size_t current = iter->current;
+
+next:
+ dbg(rules->udev, "current=%zi\n", current);
+ if (current >= rules->bufsize) {
+ dbg(rules->udev, "LABEL='%s' not found\n", label);
+ return 0;
+ }
+ rule = (struct udev_rule *) (rules->buf + current);
+
+ if (strcmp(&rule->buf[rule->label.val_off], label) != 0) {
+ dbg(rules->udev, "moving forward, looking for label '%s'\n", label);
+ current += sizeof(struct udev_rule) + rule->bufsize;
+ goto next;
+ }
+
+ dbg(rules->udev, "found label '%s'\n", label);
+ return current;
+}
+
+static int get_key(struct udev_rules *rules, char **line, char **key, enum key_operation *operation, char **value)
+{
+ char *linepos;
+ char *temp;
+
+ linepos = *line;
+ if (linepos == NULL && linepos[0] == '\0')
+ return -1;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]) || linepos[0] == ',')
+ linepos++;
+
+ /* get the key */
+ if (linepos[0] == '\0')
+ return -1;
+ *key = linepos;
+
+ while (1) {
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+ if (isspace(linepos[0]))
+ break;
+ if (linepos[0] == '=')
+ break;
+ if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
+ if (linepos[1] == '=')
+ break;
+ }
+
+ /* remember end of key */
+ temp = linepos;
+
+ /* skip whitespace after key */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /* get operation type */
+ if (linepos[0] == '=' && linepos[1] == '=') {
+ *operation = KEY_OP_MATCH;
+ linepos += 2;
+ dbg(rules->udev, "operator=match\n");
+ } else if (linepos[0] == '!' && linepos[1] == '=') {
+ *operation = KEY_OP_NOMATCH;
+ linepos += 2;
+ dbg(rules->udev, "operator=nomatch\n");
+ } else if (linepos[0] == '+' && linepos[1] == '=') {
+ *operation = KEY_OP_ADD;
+ linepos += 2;
+ dbg(rules->udev, "operator=add\n");
+ } else if (linepos[0] == '=') {
+ *operation = KEY_OP_ASSIGN;
+ linepos++;
+ dbg(rules->udev, "operator=assign\n");
+ } else if (linepos[0] == ':' && linepos[1] == '=') {
+ *operation = KEY_OP_ASSIGN_FINAL;
+ linepos += 2;
+ dbg(rules->udev, "operator=assign_final\n");
+ } else
+ return -1;
+
+ /* terminate key */
+ temp[0] = '\0';
+ dbg(rules->udev, "key='%s'\n", *key);
+
+ /* skip whitespace after operator */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /* get the value*/
+ if (linepos[0] == '"')
+ linepos++;
+ else
+ return -1;
+ *value = linepos;
+
+ temp = strchr(linepos, '"');
+ if (!temp)
+ return -1;
+ temp[0] = '\0';
+ temp++;
+ dbg(rules->udev, "value='%s'\n", *value);
+
+ /* move line to next key */
+ *line = temp;
+
+ return 0;
+}
+
+/* extract possible KEY{attr} */
+static char *get_key_attribute(struct udev_rules *rules, char *str)
+{
+ char *pos;
+ char *attr;
+
+ attr = strchr(str, '{');
+ if (attr != NULL) {
+ attr++;
+ pos = strchr(attr, '}');
+ if (pos == NULL) {
+ err(rules->udev, "missing closing brace for format\n");
+ return NULL;
+ }
+ pos[0] = '\0';
+ dbg(rules->udev, "attribute='%s'\n", attr);
+ return attr;
+ }
+
+ return NULL;
+}
+
+static int add_rule_key(struct udev_rule *rule, struct key *key,
+ enum key_operation operation, const char *value)
+{
+ size_t val_len = strnlen(value, UTIL_PATH_SIZE);
+
+ key->operation = operation;
+
+ key->val_off = rule->bufsize;
+ util_strlcpy(rule->buf + rule->bufsize, value, val_len+1);
+ rule->bufsize += val_len+1;
+
+ return 0;
+}
+
+static int add_rule_key_pair(struct udev_rules *rules, struct udev_rule *rule, struct key_pairs *pairs,
+ enum key_operation operation, const char *key, const char *value)
+{
+ size_t key_len = strnlen(key, UTIL_PATH_SIZE);
+
+ if (pairs->count >= PAIRS_MAX) {
+ err(rules->udev, "skip, too many keys of the same type in a single rule\n");
+ return -1;
+ }
+
+ add_rule_key(rule, &pairs->keys[pairs->count].key, operation, value);
+
+ /* add the key-name of the pair */
+ pairs->keys[pairs->count].key_name_off = rule->bufsize;
+ util_strlcpy(rule->buf + rule->bufsize, key, key_len+1);
+ rule->bufsize += key_len+1;
+
+ pairs->count++;
+
+ return 0;
+}
+
+static int add_to_rules(struct udev_rules *rules, char *line, const char *filename, unsigned int lineno)
+{
+ char buf[sizeof(struct udev_rule) + UTIL_LINE_SIZE];
+ struct udev_rule *rule;
+ size_t rule_size;
+ int valid;
+ char *linepos;
+ char *attr;
+ size_t padding;
+ int physdev = 0;
+ int retval;
+
+ memset(buf, 0x00, sizeof(buf));
+ rule = (struct udev_rule *) buf;
+ rule->event_timeout = -1;
+ linepos = line;
+ valid = 0;
+
+ /* get all the keys */
+ while (1) {
+ char *key;
+ char *value;
+ enum key_operation operation = KEY_OP_UNSET;
+
+ retval = get_key(rules, &linepos, &key, &operation, &value);
+ if (retval)
+ break;
+
+ if (strcasecmp(key, "ACTION") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid ACTION operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->action, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "DEVPATH") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DEVPATH operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->devpath, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "KERNEL") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid KERNEL operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->kernel, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "SUBSYSTEM") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid SUBSYSTEM operation\n");
+ goto invalid;
+ }
+ /* bus, class, subsystem events should all be the same */
+ if (strcmp(value, "subsystem") == 0 ||
+ strcmp(value, "bus") == 0 ||
+ strcmp(value, "class") == 0) {
+ if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
+ err(rules->udev, "'%s' must be specified as 'subsystem' \n"
+ "please fix it in %s:%u", value, filename, lineno);
+ add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
+ } else
+ add_rule_key(rule, &rule->subsystem, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "DRIVER") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DRIVER operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->driver, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("ATTR")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ATTR attribute\n");
+ goto invalid;
+ }
+ if (add_rule_key_pair(rules, rule, &rule->attr, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "KERNELS") == 0 ||
+ strcasecmp(key, "ID") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid KERNELS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->kernels, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
+ strcasecmp(key, "BUS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid SUBSYSTEMS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->subsystems, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "DRIVERS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DRIVERS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->drivers, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
+ strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid ATTRS operation\n");
+ goto invalid;
+ }
+ attr = get_key_attribute(rules, key + sizeof("ATTRS")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ATTRS attribute\n");
+ goto invalid;
+ }
+ if (strncmp(attr, "device/", 7) == 0)
+ err(rules->udev, "the 'device' link is deprecated and will be removed from a future kernel, \n"
+ "please fix it in %s:%u", filename, lineno);
+ else if (strstr(attr, "../") != NULL)
+ err(rules->udev, "do not reference parent sysfs directories directly, that may break with a future kernel, \n"
+ "please fix it in %s:%u", filename, lineno);
+ if (add_rule_key_pair(rules, rule, &rule->attrs, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("ENV")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ENV attribute\n");
+ goto invalid;
+ }
+ if (strncmp(attr, "PHYSDEV", 7) == 0)
+ physdev = 1;
+ if (add_rule_key_pair(rules, rule, &rule->env, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "PROGRAM") == 0) {
+ add_rule_key(rule, &rule->program, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "RESULT") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid RESULT operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->result, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("IMPORT")-1);
+ if (attr != NULL && strstr(attr, "program")) {
+ dbg(rules->udev, "IMPORT will be executed\n");
+ rule->import_type = IMPORT_PROGRAM;
+ } else if (attr != NULL && strstr(attr, "file")) {
+ dbg(rules->udev, "IMPORT will be included as file\n");
+ rule->import_type = IMPORT_FILE;
+ } else if (attr != NULL && strstr(attr, "parent")) {
+ dbg(rules->udev, "IMPORT will include the parent values\n");
+ rule->import_type = IMPORT_PARENT;
+ } else {
+ /* figure it out if it is executable */
+ char file[UTIL_PATH_SIZE];
+ char *pos;
+ struct stat statbuf;
+
+ util_strlcpy(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
+
+ /* allow programs in /lib/udev called without the path */
+ if (strchr(file, '/') == NULL) {
+ util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
+ util_strlcat(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
+ }
+
+ dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
+ if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
+ dbg(rules->udev, "IMPORT is executable, will be executed (autotype)\n");
+ rule->import_type = IMPORT_PROGRAM;
+ } else {
+ dbg(rules->udev, "IMPORT is not executable, will be included as file (autotype)\n");
+ rule->import_type = IMPORT_FILE;
+ }
+ }
+ add_rule_key(rule, &rule->import, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid TEST operation\n");
+ goto invalid;
+ }
+ attr = get_key_attribute(rules, key + sizeof("TEST")-1);
+ if (attr != NULL)
+ rule->test_mode_mask = strtol(attr, NULL, 8);
+ add_rule_key(rule, &rule->test, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("RUN")-1);
+ if (attr != NULL) {
+ if (strstr(attr, "ignore_error"))
+ rule->run_ignore_error = 1;
+ }
+ add_rule_key(rule, &rule->run, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
+ add_rule_key(rule, &rule->wait_for, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "LABEL") == 0) {
+ add_rule_key(rule, &rule->label, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "GOTO") == 0) {
+ add_rule_key(rule, &rule->goto_label, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("NAME")-1);
+ if (attr != NULL) {
+ if (strstr(attr, "all_partitions") != NULL) {
+ dbg(rules->udev, "creation of partition nodes requested\n");
+ rule->partitions = DEFAULT_PARTITIONS_COUNT;
+ }
+ if (strstr(attr, "ignore_remove") != NULL) {
+ dbg(rules->udev, "remove event should be ignored\n");
+ rule->ignore_remove = 1;
+ }
+ }
+ if (value[0] == '\0')
+ dbg(rules->udev, "name empty, node creation supressed\n");
+ add_rule_key(rule, &rule->name, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "SYMLINK") == 0) {
+ if (operation == KEY_OP_MATCH ||
+ operation == KEY_OP_NOMATCH)
+ add_rule_key(rule, &rule->symlink_match, operation, value);
+ else
+ add_rule_key(rule, &rule->symlink, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "OWNER") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char owner[32];
+ uid_t uid = lookup_user(rules->udev, value);
+ dbg(rules->udev, "replacing username='%s' by id=%i\n", value, uid);
+ sprintf(owner, "%u", (unsigned int) uid);
+ add_rule_key(rule, &rule->owner, operation, owner);
+ continue;
+ }
+ }
+
+ add_rule_key(rule, &rule->owner, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "GROUP") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char group[32];
+ gid_t gid = lookup_group(rules->udev, value);
+ dbg(rules->udev, "replacing groupname='%s' by id=%i\n", value, gid);
+ sprintf(group, "%u", (unsigned int) gid);
+ add_rule_key(rule, &rule->group, operation, group);
+ continue;
+ }
+ }
+
+ add_rule_key(rule, &rule->group, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "MODE") == 0) {
+ add_rule_key(rule, &rule->mode, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "OPTIONS") == 0) {
+ const char *pos;
+
+ if (strstr(value, "last_rule") != NULL) {
+ dbg(rules->udev, "last rule to be applied\n");
+ rule->last_rule = 1;
+ }
+ if (strstr(value, "ignore_device") != NULL) {
+ dbg(rules->udev, "device should be ignored\n");
+ rule->ignore_device = 1;
+ }
+ if (strstr(value, "ignore_remove") != NULL) {
+ dbg(rules->udev, "remove event should be ignored\n");
+ rule->ignore_remove = 1;
+ }
+ pos = strstr(value, "link_priority=");
+ if (pos != NULL) {
+ rule->link_priority = atoi(&pos[strlen("link_priority=")]);
+ dbg(rules->udev, "link priority=%i\n", rule->link_priority);
+ }
+ pos = strstr(value, "event_timeout=");
+ if (pos != NULL) {
+ rule->event_timeout = atoi(&pos[strlen("event_timeout=")]);
+ dbg(rules->udev, "event timout=%i\n", rule->event_timeout);
+ }
+ pos = strstr(value, "string_escape=");
+ if (pos != NULL) {
+ pos = &pos[strlen("string_escape=")];
+ if (strncmp(pos, "none", strlen("none")) == 0)
+ rule->string_escape = ESCAPE_NONE;
+ else if (strncmp(pos, "replace", strlen("replace")) == 0)
+ rule->string_escape = ESCAPE_REPLACE;
+ }
+ if (strstr(value, "all_partitions") != NULL) {
+ dbg(rules->udev, "creation of partition nodes requested\n");
+ rule->partitions = DEFAULT_PARTITIONS_COUNT;
+ }
+ valid = 1;
+ continue;
+ }
+
+ err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
+ }
+
+ if (physdev && rule->wait_for.operation == KEY_OP_UNSET)
+ err(rules->udev, "PHYSDEV* values are deprecated and will be removed from a future kernel, \n"
+ "please fix it in %s:%u", filename, lineno);
+
+ /* skip line if not any valid key was found */
+ if (!valid)
+ goto invalid;
+
+ /* grow buffer and add rule */
+ rule_size = sizeof(struct udev_rule) + rule->bufsize;
+ padding = (sizeof(size_t) - rule_size % sizeof(size_t)) % sizeof(size_t);
+ dbg(rules->udev, "add %zi padding bytes\n", padding);
+ rule_size += padding;
+ rule->bufsize += padding;
+
+ rules->buf = realloc(rules->buf, rules->bufsize + rule_size);
+ if (!rules->buf) {
+ err(rules->udev, "realloc failed\n");
+ goto exit;
+ }
+ dbg(rules->udev, "adding rule to offset %zi\n", rules->bufsize);
+ memcpy(rules->buf + rules->bufsize, rule, rule_size);
+ rules->bufsize += rule_size;
+exit:
+ return 0;
+
+invalid:
+ err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
+ return -1;
+}
+
+static int parse_file(struct udev_rules *rules, const char *filename)
+{
+ char line[UTIL_LINE_SIZE];
+ char *bufline;
+ unsigned int lineno;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
+ int retval = 0;
+ size_t start;
+ struct udev_rule *rule;
+ struct udev_rules_iter iter;
+
+ start = rules->bufsize;
+
+ if (file_map(filename, &buf, &bufsize) != 0) {
+ err(rules->udev, "can't open '%s' as rules file: %m\n", filename);
+ return -1;
+ }
+ info(rules->udev, "reading '%s' as rules file\n", filename);
+
+ /* loop through the whole file */
+ cur = 0;
+ lineno = 0;
+ while (cur < bufsize) {
+ unsigned int i, j;
+
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+ lineno++;
+
+ /* eat the whitespace */
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
+ }
+ if (count == 0)
+ continue;
+
+ /* see if this is a comment */
+ if (bufline[0] == '#')
+ continue;
+
+ if (count >= sizeof(line)) {
+ err(rules->udev, "line too long, rule skipped '%s:%u'\n", filename, lineno);
+ continue;
+ }
+
+ /* skip backslash and newline from multiline rules */
+ for (i = j = 0; i < count; i++) {
+ if (bufline[i] == '\\' && bufline[i+1] == '\n')
+ continue;
+
+ line[j++] = bufline[i];
+ }
+ line[j] = '\0';
+
+ dbg(rules->udev, "read '%s'\n", line);
+ add_to_rules(rules, line, filename, lineno);
+ }
+
+ /* Compute all goto targets within this file */
+ udev_rules_iter_init(&iter, rules);
+ udev_rules_iter_goto(&iter, start);
+ while((rule = udev_rules_iter_next(&iter))) {
+ if (rule->goto_label.operation != KEY_OP_UNSET) {
+ char *goto_label = &rule->buf[rule->goto_label.val_off];
+
+ dbg(rules->udev, "resolving goto label '%s'\n", goto_label);
+ rule->goto_rule_off = find_label(&iter, goto_label);
+ if (rule->goto_rule_off == 0) {
+ err(rules->udev, "ignore goto to nonexistent label '%s' in '%s'\n",
+ goto_label, filename);
+ rule->goto_rule_off = iter.current;
+ }
+ }
+ }
+
+ file_unmap(buf, bufsize);
+ return retval;
+}
+
+int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names)
+{
+ struct stat statbuf;
+ char filename[PATH_MAX];
+ LIST_HEAD(name_list);
+ LIST_HEAD(sort_list);
+ struct name_entry *name_loop, *name_tmp;
+ struct name_entry *sort_loop, *sort_tmp;
+ int retval = 0;
+
+ memset(rules, 0x00, sizeof(struct udev_rules));
+ rules->udev = udev;
+ rules->resolve_names = resolve_names;
+
+ if (udev_get_rules_path(udev) != NULL) {
+ /* custom rules location for testing */
+ add_matching_files(udev, &name_list, udev_get_rules_path(udev), ".rules");
+ } else {
+ /* read user/custom rules */
+ add_matching_files(udev, &name_list, SYSCONFDIR "/udev/rules.d", ".rules");
+
+ /* read dynamic/temporary rules */
+ util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
+ util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
+ if (stat(filename, &statbuf) != 0) {
+ create_path(udev, filename);
+ udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
+ mkdir(filename, 0755);
+ udev_selinux_resetfscreatecon(udev);
+ }
+ add_matching_files(udev, &sort_list, filename, ".rules");
+
+ /* read default rules */
+ add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
+
+ /* sort all rules files by basename into list of files */
+ list_for_each_entry_safe(sort_loop, sort_tmp, &sort_list, node) {
+ const char *sort_base = strrchr(sort_loop->name, '/');
+
+ if (sort_base == NULL)
+ continue;
+
+ list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
+ const char *name_base = strrchr(name_loop->name, '/');
+
+ if (name_base == NULL)
+ continue;
+
+ if (strcmp(name_base, sort_base) == 0) {
+ info(udev, "rule file '%s' already added, ignoring '%s'\n",
+ name_loop->name, sort_loop->name);
+ list_del(&sort_loop->node);
+ free(sort_loop);
+ sort_loop = NULL;
+ continue;
+ }
+
+ if (strcmp(name_base, sort_base) > 0)
+ break;
+ }
+ if (sort_loop != NULL)
+ list_move_tail(&sort_loop->node, &name_loop->node);
+ }
+ }
+
+ /* parse list of files */
+ list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
+ if (stat(name_loop->name, &statbuf) == 0) {
+ if (statbuf.st_size)
+ parse_file(rules, name_loop->name);
+ else
+ dbg(udev, "empty rules file '%s'\n", name_loop->name);
+ } else
+ err(udev, "could not read '%s': %m\n", name_loop->name);
+ list_del(&name_loop->node);
+ free(name_loop);
+ }
+
+ return retval;
+}
+
+void udev_rules_cleanup(struct udev_rules *rules)
+{
+ if (rules->buf) {
+ free(rules->buf);
+ rules->buf = NULL;
+ }
+}
+
--- /dev/null
+/*
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <dirent.h>
+#include <fnmatch.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+
+#include "udev.h"
+#include "udev-rules.h"
+
+extern char **environ;
+
+/* extract possible {attr} and move str behind it */
+static char *get_format_attribute(struct udev *udev, char **str)
+{
+ char *pos;
+ char *attr = NULL;
+
+ if (*str[0] == '{') {
+ pos = strchr(*str, '}');
+ if (pos == NULL) {
+ err(udev, "missing closing brace for format\n");
+ return NULL;
+ }
+ pos[0] = '\0';
+ attr = *str+1;
+ *str = pos+1;
+ dbg(udev, "attribute='%s', str='%s'\n", attr, *str);
+ }
+ return attr;
+}
+
+/* extract possible format length and move str behind it*/
+static int get_format_len(struct udev *udev, char **str)
+{
+ int num;
+ char *tail;
+
+ if (isdigit(*str[0])) {
+ num = (int) strtoul(*str, &tail, 10);
+ if (num > 0) {
+ *str = tail;
+ dbg(udev, "format length=%i\n", num);
+ return num;
+ } else {
+ err(udev, "format parsing error '%s'\n", *str);
+ }
+ }
+ return -1;
+}
+
+static int get_key(char **line, char **key, char **value)
+{
+ char *linepos;
+ char *temp;
+
+ linepos = *line;
+ if (linepos == NULL)
+ return -1;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]))
+ linepos++;
+
+ /* get the key */
+ temp = strchr(linepos, '=');
+ if (temp == NULL || temp == linepos)
+ return -1;
+ temp[0] = '\0';
+ *key = linepos;
+ linepos = &temp[1];
+
+ /* get a quoted value */
+ if (linepos[0] == '"' || linepos[0] == '\'') {
+ temp = strchr(&linepos[1], linepos[0]);
+ if (temp != NULL) {
+ temp[0] = '\0';
+ *value = &linepos[1];
+ goto out;
+ }
+ }
+
+ /* get the value*/
+ temp = strchr(linepos, '\n');
+ if (temp != NULL)
+ temp[0] = '\0';
+ *value = linepos;
+out:
+ return 0;
+}
+
+static int run_program(struct udev_device *dev, const char *command,
+ char *result, size_t ressize, size_t *reslen)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ int status;
+ char **envp;
+ int outpipe[2] = {-1, -1};
+ int errpipe[2] = {-1, -1};
+ pid_t pid;
+ char arg[UTIL_PATH_SIZE];
+ char program[UTIL_PATH_SIZE];
+ char *argv[(sizeof(arg) / 2) + 1];
+ int devnull;
+ int i;
+ int err = 0;
+
+ /* build argv from command */
+ util_strlcpy(arg, command, sizeof(arg));
+ i = 0;
+ if (strchr(arg, ' ') != NULL) {
+ char *pos = arg;
+
+ while (pos != NULL) {
+ if (pos[0] == '\'') {
+ /* don't separate if in apostrophes */
+ pos++;
+ argv[i] = strsep(&pos, "\'");
+ while (pos != NULL && pos[0] == ' ')
+ pos++;
+ } else {
+ argv[i] = strsep(&pos, " ");
+ }
+ dbg(udev, "arg[%i] '%s'\n", i, argv[i]);
+ i++;
+ }
+ argv[i] = NULL;
+ } else {
+ argv[0] = arg;
+ argv[1] = NULL;
+ }
+ info(udev, "'%s'\n", command);
+
+ /* prepare pipes from child to parent */
+ if (result != NULL || udev_get_log_priority(udev) >= LOG_INFO) {
+ if (pipe(outpipe) != 0) {
+ err(udev, "pipe failed: %m\n");
+ return -1;
+ }
+ }
+ if (udev_get_log_priority(udev) >= LOG_INFO) {
+ if (pipe(errpipe) != 0) {
+ err(udev, "pipe failed: %m\n");
+ return -1;
+ }
+ }
+
+ /* allow programs in /lib/udev/ to be called without the path */
+ if (strchr(argv[0], '/') == NULL) {
+ util_strlcpy(program, UDEV_PREFIX "/lib/udev/", sizeof(program));
+ util_strlcat(program, argv[0], sizeof(program));
+ argv[0] = program;
+ }
+
+ envp = udev_device_get_properties_envp(dev);
+
+ pid = fork();
+ switch(pid) {
+ case 0:
+ /* child closes parent ends of pipes */
+ if (outpipe[READ_END] > 0)
+ close(outpipe[READ_END]);
+ if (errpipe[READ_END] > 0)
+ close(errpipe[READ_END]);
+
+ /* discard child output or connect to pipe */
+ devnull = open("/dev/null", O_RDWR);
+ if (devnull > 0) {
+ dup2(devnull, STDIN_FILENO);
+ if (outpipe[WRITE_END] < 0)
+ dup2(devnull, STDOUT_FILENO);
+ if (errpipe[WRITE_END] < 0)
+ dup2(devnull, STDERR_FILENO);
+ close(devnull);
+ } else
+ err(udev, "open /dev/null failed: %m\n");
+ if (outpipe[WRITE_END] > 0) {
+ dup2(outpipe[WRITE_END], STDOUT_FILENO);
+ close(outpipe[WRITE_END]);
+ }
+ if (errpipe[WRITE_END] > 0) {
+ dup2(errpipe[WRITE_END], STDERR_FILENO);
+ close(errpipe[WRITE_END]);
+ }
+ execve(argv[0], argv, envp);
+ if (errno == ENOENT || errno == ENOTDIR) {
+ /* may be on a filesytem which is not mounted right now */
+ info(udev, "program '%s' not found\n", argv[0]);
+ } else {
+ /* other problems */
+ err(udev, "exec of program '%s' failed\n", argv[0]);
+ }
+ _exit(1);
+ case -1:
+ err(udev, "fork of '%s' failed: %m\n", argv[0]);
+ return -1;
+ default:
+ /* read from child if requested */
+ if (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
+ ssize_t count;
+ size_t respos = 0;
+
+ /* parent closes child ends of pipes */
+ if (outpipe[WRITE_END] > 0)
+ close(outpipe[WRITE_END]);
+ if (errpipe[WRITE_END] > 0)
+ close(errpipe[WRITE_END]);
+
+ /* read child output */
+ while (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
+ int fdcount;
+ fd_set readfds;
+
+ FD_ZERO(&readfds);
+ if (outpipe[READ_END] > 0)
+ FD_SET(outpipe[READ_END], &readfds);
+ if (errpipe[READ_END] > 0)
+ FD_SET(errpipe[READ_END], &readfds);
+ fdcount = select(UDEV_MAX(outpipe[READ_END], errpipe[READ_END])+1, &readfds, NULL, NULL, NULL);
+ if (fdcount < 0) {
+ if (errno == EINTR)
+ continue;
+ err = -1;
+ break;
+ }
+
+ /* get stdout */
+ if (outpipe[READ_END] > 0 && FD_ISSET(outpipe[READ_END], &readfds)) {
+ char inbuf[1024];
+ char *pos;
+ char *line;
+
+ count = read(outpipe[READ_END], inbuf, sizeof(inbuf)-1);
+ if (count <= 0) {
+ close(outpipe[READ_END]);
+ outpipe[READ_END] = -1;
+ if (count < 0) {
+ err(udev, "stdin read failed: %m\n");
+ err = -1;
+ }
+ continue;
+ }
+ inbuf[count] = '\0';
+
+ /* store result for rule processing */
+ if (result) {
+ if (respos + count < ressize) {
+ memcpy(&result[respos], inbuf, count);
+ respos += count;
+ } else {
+ err(udev, "ressize %ld too short\n", (long)ressize);
+ err = -1;
+ }
+ }
+ pos = inbuf;
+ while ((line = strsep(&pos, "\n")))
+ if (pos || line[0] != '\0')
+ info(udev, "'%s' (stdout) '%s'\n", argv[0], line);
+ }
+
+ /* get stderr */
+ if (errpipe[READ_END] > 0 && FD_ISSET(errpipe[READ_END], &readfds)) {
+ char errbuf[1024];
+ char *pos;
+ char *line;
+
+ count = read(errpipe[READ_END], errbuf, sizeof(errbuf)-1);
+ if (count <= 0) {
+ close(errpipe[READ_END]);
+ errpipe[READ_END] = -1;
+ if (count < 0)
+ err(udev, "stderr read failed: %m\n");
+ continue;
+ }
+ errbuf[count] = '\0';
+ pos = errbuf;
+ while ((line = strsep(&pos, "\n")))
+ if (pos || line[0] != '\0')
+ info(udev, "'%s' (stderr) '%s'\n", argv[0], line);
+ }
+ }
+ if (outpipe[READ_END] > 0)
+ close(outpipe[READ_END]);
+ if (errpipe[READ_END] > 0)
+ close(errpipe[READ_END]);
+
+ /* return the childs stdout string */
+ if (result) {
+ result[respos] = '\0';
+ dbg(udev, "result='%s'\n", result);
+ if (reslen)
+ *reslen = respos;
+ }
+ }
+ waitpid(pid, &status, 0);
+ if (WIFEXITED(status)) {
+ info(udev, "'%s' returned with status %i\n", argv[0], WEXITSTATUS(status));
+ if (WEXITSTATUS(status) != 0)
+ err = -1;
+ } else {
+ err(udev, "'%s' abnormal exit\n", argv[0]);
+ err = -1;
+ }
+ }
+
+ return err;
+}
+
+static int import_keys_into_env(struct udev_event *event, const char *buf, size_t bufsize)
+{
+ struct udev_device *dev = event->dev;
+ char line[UTIL_LINE_SIZE];
+ const char *bufline;
+ char *linepos;
+ char *variable;
+ char *value;
+ size_t cur;
+ size_t count;
+ int lineno;
+
+ /* loop through the whole buffer */
+ lineno = 0;
+ cur = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+ lineno++;
+
+ /* eat the whitespace */
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
+ }
+ if (count == 0)
+ continue;
+
+ /* see if this is a comment */
+ if (bufline[0] == '#')
+ continue;
+
+ if (count >= sizeof(line)) {
+ err(event->udev, "line too long, skipped\n");
+ continue;
+ }
+
+ memcpy(line, bufline, count);
+ line[count] = '\0';
+
+ linepos = line;
+ if (get_key(&linepos, &variable, &value) == 0) {
+ char syspath[UTIL_PATH_SIZE];
+
+ dbg(event->udev, "import '%s=%s'\n", variable, value);
+ /* handle device, renamed by external tool, returning new path */
+ if (strcmp(variable, "DEVPATH") == 0) {
+ info(event->udev, "updating devpath from '%s' to '%s'\n",
+ udev_device_get_devpath(dev), value);
+ util_strlcpy(syspath, udev_get_sys_path(event->udev), sizeof(syspath));
+ util_strlcat(syspath, value, sizeof(syspath));
+ udev_device_set_syspath(dev, syspath);
+ } else {
+ struct udev_list_entry *entry;
+
+ entry = udev_device_add_property(dev, variable, value);
+ /* store in db */
+ udev_list_entry_set_flag(entry, 1);
+ }
+ }
+ }
+ return 0;
+}
+
+static int import_file_into_env(struct udev_event *event, const char *filename)
+{
+ char *buf;
+ size_t bufsize;
+
+ if (file_map(filename, &buf, &bufsize) != 0) {
+ err(event->udev, "can't open '%s': %m\n", filename);
+ return -1;
+ }
+ import_keys_into_env(event, buf, bufsize);
+ file_unmap(buf, bufsize);
+
+ return 0;
+}
+
+static int import_program_into_env(struct udev_event *event, const char *program)
+{
+ char result[2048];
+ size_t reslen;
+
+ if (run_program(event->dev, program, result, sizeof(result), &reslen) != 0)
+ return -1;
+ return import_keys_into_env(event, result, reslen);
+}
+
+static int import_parent_into_env(struct udev_event *event, const char *filter)
+{
+ struct udev_device *dev_parent;
+ struct udev_list_entry *list_entry;
+
+ dev_parent = udev_device_get_parent(event->dev);
+ if (dev_parent == NULL)
+ return -1;
+
+ dbg(event->udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
+ const char *key = udev_list_entry_get_name(list_entry);
+ const char *val = udev_list_entry_get_value(list_entry);
+
+ if (fnmatch(filter, key, 0) == 0) {
+ struct udev_list_entry *entry;
+
+ dbg(event->udev, "import key '%s=%s'\n", key, val);
+ entry = udev_device_add_property(event->dev, key, val);
+ /* store in db */
+ udev_list_entry_set_flag(entry, 1);
+ }
+ }
+ return 0;
+}
+
+int udev_rules_run(struct udev_event *event)
+{
+ struct udev_list_entry *list_entry;
+ int err = 0;
+
+ dbg(event->udev, "executing run list\n");
+ udev_list_entry_foreach(list_entry, udev_list_get_entry(&event->run_list)) {
+ const char *cmd = udev_list_entry_get_name(list_entry);
+
+ if (strncmp(cmd, "socket:", strlen("socket:")) == 0) {
+ struct udev_monitor *monitor;
+
+ monitor = udev_monitor_new_from_socket(event->udev, &cmd[strlen("socket:")]);
+ if (monitor == NULL)
+ continue;
+ udev_monitor_send_device(monitor, event->dev);
+ udev_monitor_unref(monitor);
+ } else {
+ char program[UTIL_PATH_SIZE];
+
+ util_strlcpy(program, cmd, sizeof(program));
+ udev_rules_apply_format(event, program, sizeof(program));
+ if (run_program(event->dev, program, NULL, 0, NULL) != 0) {
+ if (!udev_list_entry_get_flag(list_entry))
+ err = -1;
+ }
+ }
+ }
+ return err;
+}
+
+#define WAIT_LOOP_PER_SECOND 50
+static int wait_for_file(struct udev_event *event, const char *file, int timeout)
+{
+ char filepath[UTIL_PATH_SIZE];
+ char devicepath[UTIL_PATH_SIZE] = "";
+ struct stat stats;
+ int loop = timeout * WAIT_LOOP_PER_SECOND;
+
+ /* a relative path is a device attribute */
+ if (file[0] != '/') {
+ util_strlcpy(devicepath, udev_get_sys_path(event->udev), sizeof(devicepath));
+ util_strlcat(devicepath, udev_device_get_devpath(event->dev), sizeof(devicepath));
+
+ util_strlcpy(filepath, devicepath, sizeof(filepath));
+ util_strlcat(filepath, "/", sizeof(filepath));
+ util_strlcat(filepath, file, sizeof(filepath));
+ file = filepath;
+ }
+
+ dbg(event->udev, "will wait %i sec for '%s'\n", timeout, file);
+ while (--loop) {
+ /* lookup file */
+ if (stat(file, &stats) == 0) {
+ info(event->udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
+ return 0;
+ }
+ /* make sure, the device did not disappear in the meantime */
+ if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
+ info(event->udev, "device disappeared while waiting for '%s'\n", file);
+ return -2;
+ }
+ info(event->udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
+ usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
+ }
+ info(event->udev, "waiting for '%s' failed\n", file);
+ return -1;
+}
+
+/* handle "[$SUBSYSTEM/$KERNEL]<attribute>" lookup */
+static int split_subsys_sysname(struct udev *udev, char *attrstr, char **subsys, char **sysname, char **attr)
+{
+ char *pos;
+
+ if (attrstr[0] != '[')
+ return -1;
+
+ *subsys = &attrstr[1];
+ pos = strchr(*subsys, ']');
+ if (pos == NULL)
+ return -1;
+ pos[0] = '\0';
+ pos = &pos[1];
+
+ if (pos[0] == '/')
+ pos = &pos[1];
+ if (pos[0] != '\0')
+ *attr = pos;
+ else
+ *attr = NULL;
+
+ pos = strchr(*subsys, '/');
+ if (pos == NULL)
+ return -1;
+ pos[0] = '\0';
+ *sysname = &pos[1];
+ return 0;
+}
+
+static int attr_subst_subdir(char *attr, size_t len)
+{
+ char *pos;
+ int found = 0;
+
+ pos = strstr(attr, "/*/");
+ if (pos != NULL) {
+ char str[UTIL_PATH_SIZE];
+ DIR *dir;
+
+ pos[1] = '\0';
+ util_strlcpy(str, &pos[2], sizeof(str));
+ dir = opendir(attr);
+ if (dir != NULL) {
+ struct dirent *dent;
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ struct stat stats;
+
+ if (dent->d_name[0] == '.')
+ continue;
+ util_strlcat(attr, dent->d_name, len);
+ util_strlcat(attr, str, len);
+ if (stat(attr, &stats) == 0) {
+ found = 1;
+ break;
+ }
+ pos[1] = '\0';
+ }
+ closedir(dir);
+ }
+ if (!found)
+ util_strlcat(attr, str, len);
+ }
+
+ return found;
+}
+
+void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize)
+{
+ struct udev_device *dev = event->dev;
+ char temp[UTIL_PATH_SIZE];
+ char temp2[UTIL_PATH_SIZE];
+ char *head, *tail, *cpos, *attr, *rest;
+ int len;
+ int i;
+ int count;
+ enum subst_type {
+ SUBST_UNKNOWN,
+ SUBST_DEVPATH,
+ SUBST_KERNEL,
+ SUBST_KERNEL_NUMBER,
+ SUBST_ID,
+ SUBST_DRIVER,
+ SUBST_MAJOR,
+ SUBST_MINOR,
+ SUBST_RESULT,
+ SUBST_ATTR,
+ SUBST_PARENT,
+ SUBST_TEMP_NODE,
+ SUBST_NAME,
+ SUBST_LINKS,
+ SUBST_ROOT,
+ SUBST_SYS,
+ SUBST_ENV,
+ };
+ static const struct subst_map {
+ char *name;
+ char fmt;
+ enum subst_type type;
+ } map[] = {
+ { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
+ { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
+ { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL },
+ { .name = "id", .fmt = 'b', .type = SUBST_ID },
+ { .name = "driver", .fmt = 'd', .type = SUBST_DRIVER },
+ { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
+ { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
+ { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
+ { .name = "attr", .fmt = 's', .type = SUBST_ATTR },
+ { .name = "sysfs", .fmt = 's', .type = SUBST_ATTR },
+ { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
+ { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
+ { .name = "name", .fmt = 'D', .type = SUBST_NAME },
+ { .name = "links", .fmt = 'L', .type = SUBST_LINKS },
+ { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
+ { .name = "sys", .fmt = 'S', .type = SUBST_SYS },
+ { .name = "env", .fmt = 'E', .type = SUBST_ENV },
+ { NULL, '\0', 0 }
+ };
+ enum subst_type type;
+ const struct subst_map *subst;
+
+ head = string;
+ while (1) {
+ len = -1;
+ while (head[0] != '\0') {
+ if (head[0] == '$') {
+ /* substitute named variable */
+ if (head[1] == '\0')
+ break;
+ if (head[1] == '$') {
+ util_strlcpy(temp, head+2, sizeof(temp));
+ util_strlcpy(head+1, temp, maxsize);
+ head++;
+ continue;
+ }
+ head[0] = '\0';
+ for (subst = map; subst->name; subst++) {
+ if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
+ type = subst->type;
+ tail = head + strlen(subst->name)+1;
+ dbg(event->udev, "will substitute format name '%s'\n", subst->name);
+ goto found;
+ }
+ }
+ head[0] = '$';
+ err(event->udev, "unknown format variable '%s'\n", head);
+ } else if (head[0] == '%') {
+ /* substitute format char */
+ if (head[1] == '\0')
+ break;
+ if (head[1] == '%') {
+ util_strlcpy(temp, head+2, sizeof(temp));
+ util_strlcpy(head+1, temp, maxsize);
+ head++;
+ continue;
+ }
+ head[0] = '\0';
+ tail = head+1;
+ len = get_format_len(event->udev, &tail);
+ for (subst = map; subst->name; subst++) {
+ if (tail[0] == subst->fmt) {
+ type = subst->type;
+ tail++;
+ dbg(event->udev, "will substitute format char '%c'\n", subst->fmt);
+ goto found;
+ }
+ }
+ head[0] = '%';
+ err(event->udev, "unknown format char '%c'\n", tail[0]);
+ }
+ head++;
+ }
+ break;
+found:
+ attr = get_format_attribute(event->udev, &tail);
+ util_strlcpy(temp, tail, sizeof(temp));
+ dbg(event->udev, "format=%i, string='%s', tail='%s'\n", type ,string, tail);
+
+ switch (type) {
+ case SUBST_DEVPATH:
+ util_strlcat(string, udev_device_get_devpath(dev), maxsize);
+ dbg(event->udev, "substitute devpath '%s'\n", udev_device_get_devpath(dev));
+ break;
+ case SUBST_KERNEL:
+ util_strlcat(string, udev_device_get_sysname(dev), maxsize);
+ dbg(event->udev, "substitute kernel name '%s'\n", udev_device_get_sysname(dev));
+ break;
+ case SUBST_KERNEL_NUMBER:
+ if (udev_device_get_sysnum(dev) == NULL)
+ break;
+ util_strlcat(string, udev_device_get_sysnum(dev), maxsize);
+ dbg(event->udev, "substitute kernel number '%s'\n", udev_device_get_sysnum(dev));
+ break;
+ case SUBST_ID:
+ if (event->dev_parent != NULL) {
+ util_strlcat(string, udev_device_get_sysname(event->dev_parent), maxsize);
+ dbg(event->udev, "substitute id '%s'\n", udev_device_get_sysname(event->dev_parent));
+ }
+ break;
+ case SUBST_DRIVER:
+ if (event->dev_parent != NULL) {
+ const char *driver = udev_device_get_driver(event->dev_parent);
+
+ if (driver == NULL)
+ break;
+ util_strlcat(string, driver, maxsize);
+ dbg(event->udev, "substitute driver '%s'\n", driver);
+ }
+ break;
+ case SUBST_MAJOR:
+ sprintf(temp2, "%d", major(udev_device_get_devnum(dev)));
+ util_strlcat(string, temp2, maxsize);
+ dbg(event->udev, "substitute major number '%s'\n", temp2);
+ break;
+ case SUBST_MINOR:
+ sprintf(temp2, "%d", minor(udev_device_get_devnum(dev)));
+ util_strlcat(string, temp2, maxsize);
+ dbg(event->udev, "substitute minor number '%s'\n", temp2);
+ break;
+ case SUBST_RESULT:
+ if (event->program_result[0] == '\0')
+ break;
+ /* get part part of the result string */
+ i = 0;
+ if (attr != NULL)
+ i = strtoul(attr, &rest, 10);
+ if (i > 0) {
+ dbg(event->udev, "request part #%d of result string\n", i);
+ cpos = event->program_result;
+ while (--i) {
+ while (cpos[0] != '\0' && !isspace(cpos[0]))
+ cpos++;
+ while (isspace(cpos[0]))
+ cpos++;
+ }
+ if (i > 0) {
+ err(event->udev, "requested part of result string not found\n");
+ break;
+ }
+ util_strlcpy(temp2, cpos, sizeof(temp2));
+ /* %{2+}c copies the whole string from the second part on */
+ if (rest[0] != '+') {
+ cpos = strchr(temp2, ' ');
+ if (cpos)
+ cpos[0] = '\0';
+ }
+ util_strlcat(string, temp2, maxsize);
+ dbg(event->udev, "substitute part of result string '%s'\n", temp2);
+ } else {
+ util_strlcat(string, event->program_result, maxsize);
+ dbg(event->udev, "substitute result string '%s'\n", event->program_result);
+ }
+ break;
+ case SUBST_ATTR:
+ if (attr == NULL)
+ err(event->udev, "missing file parameter for attr\n");
+ else {
+ char *subsys;
+ char *sysname;
+ char *attrib;
+ char value[UTIL_NAME_SIZE] = "";
+ size_t size;
+
+ if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
+ struct udev_device *d;
+ const char *val;
+
+ if (attrib == NULL)
+ break;
+ d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
+ if (d == NULL)
+ break;
+ val = udev_device_get_attr_value(d, attrib);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ udev_device_unref(d);
+ }
+
+ /* try the current device, other matches may have selected */
+ if (value[0]=='\0' && event->dev_parent != NULL && event->dev_parent != event->dev) {
+ const char *val;
+
+ val = udev_device_get_attr_value(event->dev_parent, attr);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ }
+
+ /* look at all devices along the chain of parents */
+ if (value[0]=='\0') {
+ struct udev_device *dev_parent = dev;
+ const char *val;
+
+ do {
+ dbg(event->udev, "looking at '%s'\n", udev_device_get_syspath(dev_parent));
+ val = udev_device_get_attr_value(dev_parent, attr);
+ if (val != NULL) {
+ util_strlcpy(value, val, sizeof(value));
+ break;
+ }
+ dev_parent = udev_device_get_parent(dev_parent);
+ } while (dev_parent != NULL);
+ }
+
+ if (value[0]=='\0')
+ break;
+
+ /* strip trailing whitespace, and replace unwanted characters */
+ size = strlen(value);
+ while (size > 0 && isspace(value[--size]))
+ value[size] = '\0';
+ count = util_replace_chars(value, ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ util_strlcat(string, value, maxsize);
+ dbg(event->udev, "substitute sysfs value '%s'\n", value);
+ }
+ break;
+ case SUBST_PARENT:
+ {
+ struct udev_device *dev_parent;
+ const char *devnode;
+
+ dev_parent = udev_device_get_parent(event->dev);
+ if (dev_parent == NULL)
+ break;
+ devnode = udev_device_get_devnode(dev_parent);
+ if (devnode != NULL) {
+ size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
+
+ util_strlcat(string, &devnode[devlen], maxsize);
+ dbg(event->udev, "found parent '%s', got node name '%s'\n",
+ udev_device_get_syspath(dev_parent), &devnode[devlen]);
+ }
+ }
+ break;
+ case SUBST_TEMP_NODE:
+ if (event->tmp_node[0] == '\0' && major(udev_device_get_devnum(dev)) > 0) {
+ dbg(event->udev, "create temporary device node for callout\n");
+ snprintf(event->tmp_node, sizeof(event->tmp_node), "%s/.tmp-%u-%u",
+ udev_get_dev_path(event->udev),
+ major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)));
+ udev_node_mknod(dev, event->tmp_node, makedev(0,0), 0600, 0, 0);
+ }
+ util_strlcat(string, event->tmp_node, maxsize);
+ dbg(event->udev, "substitute temporary device node name '%s'\n", event->tmp_node);
+ break;
+ case SUBST_NAME:
+ if (event->name != NULL) {
+ util_strlcat(string, event->name, maxsize);
+ dbg(event->udev, "substitute name '%s'\n", event->name);
+ } else {
+ util_strlcat(string, udev_device_get_sysname(dev), maxsize);
+ dbg(event->udev, "substitute sysname '%s'\n", udev_device_get_sysname(dev));
+ }
+ break;
+ case SUBST_LINKS:
+ {
+ struct udev_list_entry *list_entry;
+
+ list_entry = udev_device_get_properties_list_entry(dev);
+ util_strlcpy(string, udev_list_entry_get_name(list_entry), maxsize);
+ udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) {
+ util_strlcat(string, " ", maxsize);
+ util_strlcat(string, udev_list_entry_get_name(list_entry), maxsize);
+ }
+ }
+ break;
+ case SUBST_ROOT:
+ util_strlcat(string, udev_get_dev_path(event->udev), maxsize);
+ dbg(event->udev, "substitute udev_root '%s'\n", udev_get_dev_path(event->udev));
+ break;
+ case SUBST_SYS:
+ util_strlcat(string, udev_get_sys_path(event->udev), maxsize);
+ dbg(event->udev, "substitute sys_path '%s'\n", udev_get_sys_path(event->udev));
+ break;
+ case SUBST_ENV:
+ if (attr == NULL) {
+ dbg(event->udev, "missing attribute\n");
+ break;
+ } else {
+ struct udev_list_entry *list_entry;
+ const char *value;
+
+ list_entry = udev_device_get_properties_list_entry(event->dev);
+ list_entry = udev_list_entry_get_by_name(list_entry, attr);
+ if (list_entry == NULL)
+ break;
+ value = udev_list_entry_get_value(list_entry);
+ dbg(event->udev, "substitute env '%s=%s'\n", attr, value);
+ util_strlcat(string, value, maxsize);
+ break;
+ }
+ default:
+ err(event->udev, "unknown substitution type=%i\n", type);
+ break;
+ }
+ /* possibly truncate to format-char specified length */
+ if (len >= 0 && len < (int)strlen(head)) {
+ head[len] = '\0';
+ dbg(event->udev, "truncate to %i chars, subtitution string becomes '%s'\n", len, head);
+ }
+ util_strlcat(string, temp, maxsize);
+ }
+}
+
+static char *key_val(struct udev_rule *rule, struct key *key)
+{
+ return rule->buf + key->val_off;
+}
+
+static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
+{
+ return rule->buf + pair->key_name_off;
+}
+
+static int match_key(struct udev *udev, const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
+{
+ char value[UTIL_PATH_SIZE];
+ char *key_value;
+ char *pos;
+ int match = 0;
+
+ if (key->operation != KEY_OP_MATCH &&
+ key->operation != KEY_OP_NOMATCH)
+ return 0;
+
+ if (val == NULL)
+ val = "";
+
+ /* look for a matching string, parts are separated by '|' */
+ util_strlcpy(value, rule->buf + key->val_off, sizeof(value));
+ key_value = value;
+ dbg(udev, "key %s value='%s'\n", key_name, key_value);
+ while (key_value != NULL) {
+ pos = strchr(key_value, '|');
+ if (pos != NULL) {
+ pos[0] = '\0';
+ pos = &pos[1];
+ }
+
+ dbg(udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
+ match = (fnmatch(key_value, val, 0) == 0);
+ if (match)
+ break;
+
+ key_value = pos;
+ }
+
+ if (match && (key->operation == KEY_OP_MATCH)) {
+ dbg(udev, "%s is true (matching value)\n", key_name);
+ return 0;
+ }
+ if (!match && (key->operation == KEY_OP_NOMATCH)) {
+ dbg(udev, "%s is true (non-matching value)\n", key_name);
+ return 0;
+ }
+ return -1;
+}
+
+/* match a single rule against a given device and possibly its parent devices */
+static int match_rule(struct udev_event *event, struct udev_rule *rule)
+{
+ struct udev_device *dev = event->dev;
+ int i;
+
+ if (match_key(event->udev, "ACTION", rule, &rule->action, udev_device_get_action(dev)))
+ goto nomatch;
+
+ if (match_key(event->udev, "KERNEL", rule, &rule->kernel, udev_device_get_sysname(dev)))
+ goto nomatch;
+
+ if (match_key(event->udev, "SUBSYSTEM", rule, &rule->subsystem, udev_device_get_subsystem(dev)))
+ goto nomatch;
+
+ if (match_key(event->udev, "DEVPATH", rule, &rule->devpath, udev_device_get_devpath(dev)))
+ goto nomatch;
+
+ if (match_key(event->udev, "DRIVER", rule, &rule->driver, udev_device_get_driver(dev)))
+ goto nomatch;
+
+ /* match NAME against a value assigned by an earlier rule */
+ if (match_key(event->udev, "NAME", rule, &rule->name, event->name))
+ goto nomatch;
+
+ /* match against current list of symlinks */
+ if (rule->symlink_match.operation == KEY_OP_MATCH ||
+ rule->symlink_match.operation == KEY_OP_NOMATCH) {
+ size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
+ struct udev_list_entry *list_entry;
+ int match = 0;
+
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
+ const char *devlink;
+
+ devlink = &udev_list_entry_get_name(list_entry)[devlen];
+ if (match_key(event->udev, "SYMLINK", rule, &rule->symlink_match, devlink) == 0) {
+ match = 1;
+ break;
+ }
+ }
+ if (!match)
+ goto nomatch;
+ }
+
+ for (i = 0; i < rule->env.count; i++) {
+ struct key_pair *pair = &rule->env.keys[i];
+
+ /* we only check for matches, assignments will be handled later */
+ if (pair->key.operation == KEY_OP_MATCH ||
+ pair->key.operation == KEY_OP_NOMATCH) {
+ struct udev_list_entry *list_entry;
+ const char *key_name = key_pair_name(rule, pair);
+ const char *value;
+
+ list_entry = udev_device_get_properties_list_entry(event->dev);
+ list_entry = udev_list_entry_get_by_name(list_entry, key_name);
+ value = udev_list_entry_get_value(list_entry);
+ if (value == NULL) {
+ dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
+ value = "";
+ }
+ if (match_key(event->udev, "ENV", rule, &pair->key, value))
+ goto nomatch;
+ }
+ }
+
+ if (rule->test.operation == KEY_OP_MATCH ||
+ rule->test.operation == KEY_OP_NOMATCH) {
+ char filename[UTIL_PATH_SIZE];
+ char *subsys;
+ char *sysname;
+ char *attrib;
+ struct stat statbuf;
+ int match;
+
+ util_strlcpy(filename, key_val(rule, &rule->test), sizeof(filename));
+ udev_rules_apply_format(event, filename, sizeof(filename));
+
+ if (split_subsys_sysname(event->udev, filename, &subsys, &sysname, &attrib) == 0) {
+ struct udev_device *d;
+ d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
+ if (d != NULL) {
+ util_strlcpy(filename, udev_device_get_syspath(d), sizeof(filename));
+ if (attrib != NULL) {
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, attrib, sizeof(filename));
+ }
+ udev_device_unref(d);
+ }
+ } else if (filename[0] != '/') {
+ char tmp[UTIL_PATH_SIZE];
+
+ util_strlcpy(tmp, udev_device_get_syspath(dev), sizeof(tmp));
+ util_strlcat(tmp, "/", sizeof(tmp));
+ util_strlcat(tmp, filename, sizeof(tmp));
+ util_strlcpy(filename, tmp, sizeof(filename));
+ }
+
+ attr_subst_subdir(filename, sizeof(filename));
+
+ match = (stat(filename, &statbuf) == 0);
+ info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
+ if (match && rule->test_mode_mask > 0) {
+ match = ((statbuf.st_mode & rule->test_mode_mask) > 0);
+ info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
+ match ? "matches" : "does not match",
+ rule->test_mode_mask);
+ }
+ if (match && rule->test.operation == KEY_OP_NOMATCH)
+ goto nomatch;
+ if (!match && rule->test.operation == KEY_OP_MATCH)
+ goto nomatch;
+ dbg(event->udev, "TEST key is true\n");
+ }
+
+ if (rule->wait_for.operation != KEY_OP_UNSET) {
+ char filename[UTIL_PATH_SIZE];
+ int found;
+
+ util_strlcpy(filename, key_val(rule, &rule->wait_for), sizeof(filename));
+ udev_rules_apply_format(event, filename, sizeof(filename));
+ found = (wait_for_file(event, filename, 10) == 0);
+ if (!found && (rule->wait_for.operation != KEY_OP_NOMATCH))
+ goto nomatch;
+ }
+
+ /* check for matching sysfs attribute pairs */
+ for (i = 0; i < rule->attr.count; i++) {
+ struct key_pair *pair = &rule->attr.keys[i];
+
+ if (pair->key.operation == KEY_OP_MATCH ||
+ pair->key.operation == KEY_OP_NOMATCH) {
+ char attr[UTIL_PATH_SIZE];
+ const char *key_name = key_pair_name(rule, pair);
+ const char *key_value = key_val(rule, &pair->key);
+ char *subsys;
+ char *sysname;
+ char *attrib;
+ char value[UTIL_NAME_SIZE] = "";
+ size_t len;
+
+ util_strlcpy(attr, key_name, sizeof(attr));
+ if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
+ struct udev_device *d;
+ const char *val;
+
+ if (attrib == NULL)
+ goto nomatch;
+ d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
+ if (d == NULL)
+ goto nomatch;
+ val = udev_device_get_attr_value(d, attrib);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ udev_device_unref(d);
+ }
+
+ if (value[0]=='\0') {
+ const char *val;
+
+ val = udev_device_get_attr_value(dev, key_name);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ }
+
+ if (value[0]=='\0')
+ goto nomatch;
+
+ /* strip trailing whitespace of value, if not asked to match for it */
+ len = strlen(key_value);
+ if (len > 0 && !isspace(key_value[len-1])) {
+ len = strlen(value);
+ while (len > 0 && isspace(value[--len]))
+ value[len] = '\0';
+ dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
+ }
+
+ if (match_key(event->udev, "ATTR", rule, &pair->key, value))
+ goto nomatch;
+ }
+ }
+
+ /* walk up the chain of parent devices and find a match */
+ event->dev_parent = dev;
+ while (1) {
+ /* check for matching kernel device name */
+ if (match_key(event->udev, "KERNELS", rule,
+ &rule->kernels, udev_device_get_sysname(event->dev_parent)))
+ goto try_parent;
+
+ /* check for matching subsystem value */
+ if (match_key(event->udev, "SUBSYSTEMS", rule,
+ &rule->subsystems, udev_device_get_subsystem(event->dev_parent)))
+ goto try_parent;
+
+ /* check for matching driver */
+ if (match_key(event->udev, "DRIVERS", rule,
+ &rule->drivers, udev_device_get_driver(event->dev_parent)))
+ goto try_parent;
+
+ /* check for matching sysfs attribute pairs */
+ for (i = 0; i < rule->attrs.count; i++) {
+ struct key_pair *pair = &rule->attrs.keys[i];
+
+ if (pair->key.operation == KEY_OP_MATCH ||
+ pair->key.operation == KEY_OP_NOMATCH) {
+ const char *key_name = key_pair_name(rule, pair);
+ const char *key_value = key_val(rule, &pair->key);
+ const char *val;
+ char value[UTIL_NAME_SIZE];
+ size_t len;
+
+ val = udev_device_get_attr_value(event->dev_parent, key_name);
+ if (val == NULL)
+ val = udev_device_get_attr_value(dev, key_name);
+ if (val == NULL)
+ goto try_parent;
+ util_strlcpy(value, val, sizeof(value));
+
+ /* strip trailing whitespace of value, if not asked to match for it */
+ len = strlen(key_value);
+ if (len > 0 && !isspace(key_value[len-1])) {
+ len = strlen(value);
+ while (len > 0 && isspace(value[--len]))
+ value[len] = '\0';
+ dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
+ }
+
+ if (match_key(event->udev, "ATTRS", rule, &pair->key, value))
+ goto try_parent;
+ }
+ }
+
+ /* found matching device */
+ break;
+try_parent:
+ /* move to parent device */
+ dbg(event->udev, "try parent sysfs device\n");
+ event->dev_parent = udev_device_get_parent(event->dev_parent);
+ if (event->dev_parent == NULL)
+ goto nomatch;
+ dbg(event->udev, "looking at dev_parent->devpath='%s'\n",
+ udev_device_get_syspath(event->dev_parent));
+ }
+
+ /* execute external program */
+ if (rule->program.operation != KEY_OP_UNSET) {
+ char program[UTIL_PATH_SIZE];
+ char result[UTIL_PATH_SIZE];
+
+ util_strlcpy(program, key_val(rule, &rule->program), sizeof(program));
+ udev_rules_apply_format(event, program, sizeof(program));
+ if (run_program(event->dev, program, result, sizeof(result), NULL) != 0) {
+ dbg(event->udev, "PROGRAM is false\n");
+ event->program_result[0] = '\0';
+ if (rule->program.operation != KEY_OP_NOMATCH)
+ goto nomatch;
+ } else {
+ int count;
+
+ dbg(event->udev, "PROGRAM matches\n");
+ util_remove_trailing_chars(result, '\n');
+ if (rule->string_escape == ESCAPE_UNSET ||
+ rule->string_escape == ESCAPE_REPLACE) {
+ count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ }
+ dbg(event->udev, "result is '%s'\n", result);
+ util_strlcpy(event->program_result, result, sizeof(event->program_result));
+ dbg(event->udev, "PROGRAM returned successful\n");
+ if (rule->program.operation == KEY_OP_NOMATCH)
+ goto nomatch;
+ }
+ dbg(event->udev, "PROGRAM key is true\n");
+ }
+
+ /* check for matching result of external program */
+ if (match_key(event->udev, "RESULT", rule, &rule->result, event->program_result))
+ goto nomatch;
+
+ /* import variables returned from program or or file into environment */
+ if (rule->import.operation != KEY_OP_UNSET) {
+ char import[UTIL_PATH_SIZE];
+ int rc = -1;
+
+ util_strlcpy(import, key_val(rule, &rule->import), sizeof(import));
+ udev_rules_apply_format(event, import, sizeof(import));
+ dbg(event->udev, "check for IMPORT import='%s'\n", import);
+ if (rule->import_type == IMPORT_PROGRAM) {
+ rc = import_program_into_env(event, import);
+ } else if (rule->import_type == IMPORT_FILE) {
+ dbg(event->udev, "import file import='%s'\n", import);
+ rc = import_file_into_env(event, import);
+ } else if (rule->import_type == IMPORT_PARENT) {
+ dbg(event->udev, "import parent import='%s'\n", import);
+ rc = import_parent_into_env(event, import);
+ }
+ if (rc != 0) {
+ dbg(event->udev, "IMPORT failed\n");
+ if (rule->import.operation != KEY_OP_NOMATCH)
+ goto nomatch;
+ } else
+ dbg(event->udev, "IMPORT '%s' imported\n", key_val(rule, &rule->import));
+ dbg(event->udev, "IMPORT key is true\n");
+ }
+
+ /* rule matches, if we have ENV assignments export it */
+ for (i = 0; i < rule->env.count; i++) {
+ struct key_pair *pair = &rule->env.keys[i];
+
+ if (pair->key.operation == KEY_OP_ASSIGN) {
+ char temp_value[UTIL_NAME_SIZE];
+ const char *key_name = key_pair_name(rule, pair);
+ const char *value = key_val(rule, &pair->key);
+
+ /* make sure we don't write to the same string we possibly read from */
+ util_strlcpy(temp_value, value, sizeof(temp_value));
+ udev_rules_apply_format(event, temp_value, sizeof(temp_value));
+
+ if (temp_value[0] != '\0') {
+ struct udev_list_entry *entry;
+
+ info(event->udev, "set ENV '%s=%s'\n", key_name, temp_value);
+ entry = udev_device_add_property(dev, key_name, temp_value);
+ /* store in db */
+ udev_list_entry_set_flag(entry, 1);
+ }
+ }
+ }
+
+ /* if we have ATTR assignments, write value to sysfs file */
+ for (i = 0; i < rule->attr.count; i++) {
+ struct key_pair *pair = &rule->attr.keys[i];
+
+ if (pair->key.operation == KEY_OP_ASSIGN) {
+ const char *key_name = key_pair_name(rule, pair);
+ char *subsys;
+ char *sysname;
+ char *attrib;
+ char attr[UTIL_PATH_SIZE];
+ char value[UTIL_NAME_SIZE];
+ FILE *f;
+
+ util_strlcpy(attr, key_name, sizeof(attr));
+ if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
+ struct udev_device *d;
+
+ d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
+ if (d != NULL) {
+ util_strlcpy(attr, udev_device_get_syspath(d), sizeof(attr));
+ if (attrib != NULL) {
+ util_strlcat(attr, "/", sizeof(attr));
+ util_strlcat(attr, attrib, sizeof(attr));
+ }
+ udev_device_unref(d);
+ }
+ } else {
+ util_strlcpy(attr, udev_device_get_syspath(dev), sizeof(attr));
+ util_strlcat(attr, "/", sizeof(attr));
+ util_strlcat(attr, key_name, sizeof(attr));
+ }
+
+ attr_subst_subdir(attr, sizeof(attr));
+
+ util_strlcpy(value, key_val(rule, &pair->key), sizeof(value));
+ udev_rules_apply_format(event, value, sizeof(value));
+ info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
+ f = fopen(attr, "w");
+ if (f != NULL) {
+ if (!event->test)
+ if (fprintf(f, "%s", value) <= 0)
+ err(event->udev, "error writing ATTR{%s}: %m\n", attr);
+ fclose(f);
+ } else
+ err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
+ }
+ }
+ return 0;
+
+nomatch:
+ return -1;
+}
+
+int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event)
+{
+ struct udev_device *dev = event->dev;
+ struct udev_rules_iter iter;
+ struct udev_rule *rule;
+ int name_set = 0;
+
+ dbg(event->udev, "device: '%s'\n", udev_device_get_syspath(dev));
+
+ /* look for a matching rule to apply */
+ udev_rules_iter_init(&iter, rules);
+ while (1) {
+ rule = udev_rules_iter_next(&iter);
+ if (rule == NULL)
+ break;
+
+ if (name_set &&
+ (rule->name.operation == KEY_OP_ASSIGN ||
+ rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+ rule->name.operation == KEY_OP_ADD)) {
+ dbg(event->udev, "node name already set, rule ignored\n");
+ continue;
+ }
+
+ dbg(event->udev, "process rule\n");
+ if (match_rule(event, rule) == 0) {
+ /* apply options */
+ if (rule->ignore_device) {
+ info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
+ event->ignore_device = 1;
+ return 0;
+ }
+ if (rule->ignore_remove) {
+ udev_device_set_ignore_remove(dev, 1);
+ dbg(event->udev, "remove event should be ignored\n");
+ }
+ if (rule->link_priority != 0) {
+ udev_device_set_devlink_priority(dev, rule->link_priority);
+ info(event->udev, "devlink_priority=%i\n", rule->link_priority);
+ }
+ if (rule->event_timeout >= 0) {
+ udev_device_set_event_timeout(dev, rule->event_timeout);
+ info(event->udev, "event_timeout=%i\n", rule->event_timeout);
+ }
+ /* apply all_partitions option only at a disk device */
+ if (rule->partitions > 0 &&
+ strcmp(udev_device_get_subsystem(dev), "block") == 0 &&
+ udev_device_get_sysnum(dev) == NULL) {
+ udev_device_set_num_fake_partitions(dev, rule->partitions);
+ dbg(event->udev, "creation of partition nodes requested\n");
+ }
+
+ /* apply permissions */
+ if (!event->mode_final && rule->mode.operation != KEY_OP_UNSET) {
+ if (rule->mode.operation == KEY_OP_ASSIGN_FINAL)
+ event->mode_final = 1;
+ char buf[20];
+ util_strlcpy(buf, key_val(rule, &rule->mode), sizeof(buf));
+ udev_rules_apply_format(event, buf, sizeof(buf));
+ event->mode = strtol(buf, NULL, 8);
+ dbg(event->udev, "applied mode=%#o to '%s'\n",
+ event->mode, udev_device_get_sysname(dev));
+ }
+ if (!event->owner_final && rule->owner.operation != KEY_OP_UNSET) {
+ if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
+ event->owner_final = 1;
+ util_strlcpy(event->owner, key_val(rule, &rule->owner), sizeof(event->owner));
+ udev_rules_apply_format(event, event->owner, sizeof(event->owner));
+ dbg(event->udev, "applied owner='%s' to '%s'\n",
+ event->owner, udev_device_get_sysname(dev));
+ }
+ if (!event->group_final && rule->group.operation != KEY_OP_UNSET) {
+ if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
+ event->group_final = 1;
+ util_strlcpy(event->group, key_val(rule, &rule->group), sizeof(event->group));
+ udev_rules_apply_format(event, event->group, sizeof(event->group));
+ dbg(event->udev, "applied group='%s' to '%s'\n",
+ event->group, udev_device_get_sysname(dev));
+ }
+
+ /* collect symlinks */
+ if (!event->devlink_final &&
+ (rule->symlink.operation == KEY_OP_ASSIGN ||
+ rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+ rule->symlink.operation == KEY_OP_ADD)) {
+ char temp[UTIL_PATH_SIZE];
+ char filename[UTIL_PATH_SIZE];
+ char *pos, *next;
+ int count = 0;
+
+ if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
+ event->devlink_final = 1;
+ if (rule->symlink.operation == KEY_OP_ASSIGN ||
+ rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
+ info(event->udev, "reset symlink list\n");
+ udev_device_cleanup_devlinks_list(dev);
+ }
+ /* allow multiple symlinks separated by spaces */
+ util_strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
+ udev_rules_apply_format(event, temp, sizeof(temp));
+ if (rule->string_escape == ESCAPE_UNSET)
+ count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
+ else if (rule->string_escape == ESCAPE_REPLACE)
+ count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
+ pos = temp;
+ while (isspace(pos[0]))
+ pos++;
+ next = strchr(pos, ' ');
+ while (next) {
+ next[0] = '\0';
+ info(event->udev, "add symlink '%s'\n", pos);
+ util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, pos, sizeof(filename));
+ udev_device_add_devlink(dev, filename);
+ while (isspace(next[1]))
+ next++;
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
+ if (pos[0] != '\0') {
+ info(event->udev, "add symlink '%s'\n", pos);
+ util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, pos, sizeof(filename));
+ udev_device_add_devlink(dev, filename);
+ }
+ }
+
+ /* set name, later rules with name set will be ignored */
+ if (rule->name.operation == KEY_OP_ASSIGN ||
+ rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+ rule->name.operation == KEY_OP_ADD) {
+ int count;
+
+ name_set = 1;
+ util_strlcpy(event->name, key_val(rule, &rule->name), sizeof(event->name));
+ udev_rules_apply_format(event, event->name, sizeof(event->name));
+ if (rule->string_escape == ESCAPE_UNSET ||
+ rule->string_escape == ESCAPE_REPLACE) {
+ count = util_replace_chars(event->name, ALLOWED_CHARS_FILE);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n", count);
+ }
+
+ info(event->udev, "rule applied, '%s' becomes '%s'\n",
+ udev_device_get_sysname(dev), event->name);
+ if (strcmp(udev_device_get_subsystem(dev), "net") != 0)
+ dbg(event->udev, "'%s' owner='%s', group='%s', mode=%#o partitions=%i\n",
+ event->name, event->owner, event->group, event->mode,
+ udev_device_get_num_fake_partitions(dev));
+ }
+
+ if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
+ struct udev_list_entry *list_entry;
+
+ if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
+ event->run_final = 1;
+ if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
+ info(event->udev, "reset run list\n");
+ udev_list_cleanup(event->udev, &event->run_list);
+ }
+ dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
+ list_entry = udev_list_entry_add(event->udev, &event->run_list,
+ key_val(rule, &rule->run), NULL, 1, 0);
+ if (rule->run_ignore_error && list_entry != NULL)
+ udev_list_entry_set_flag(list_entry, 1);
+ }
+
+ if (rule->last_rule) {
+ dbg(event->udev, "last rule to be applied\n");
+ break;
+ }
+
+ if (rule->goto_label.operation != KEY_OP_UNSET) {
+ dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
+ udev_rules_iter_goto(&iter, rule->goto_rule_off);
+ }
+ }
+ }
+
+ if (!name_set) {
+ info(event->udev, "no node name set, will use kernel name '%s'\n",
+ udev_device_get_sysname(dev));
+ util_strlcpy(event->name, udev_device_get_sysname(dev), sizeof(event->name));
+ }
+
+ if (event->tmp_node[0] != '\0') {
+ dbg(event->udev, "removing temporary device node\n");
+ unlink_secure(event->udev, event->tmp_node);
+ event->tmp_node[0] = '\0';
+ }
+ return 0;
+}
+
+int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event)
+{
+ struct udev_device *dev = event->dev;
+ struct udev_rules_iter iter;
+ struct udev_rule *rule;
+
+ dbg(event->udev, "sysname: '%s'\n", udev_device_get_sysname(dev));
+
+ /* look for a matching rule to apply */
+ udev_rules_iter_init(&iter, rules);
+ while (1) {
+ rule = udev_rules_iter_next(&iter);
+ if (rule == NULL)
+ break;
+
+ dbg(event->udev, "process rule\n");
+ if (rule->name.operation == KEY_OP_ASSIGN ||
+ rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+ rule->name.operation == KEY_OP_ADD ||
+ rule->symlink.operation == KEY_OP_ASSIGN ||
+ rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+ rule->symlink.operation == KEY_OP_ADD ||
+ rule->mode.operation != KEY_OP_UNSET ||
+ rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
+ dbg(event->udev, "skip rule that names a device\n");
+ continue;
+ }
+
+ if (match_rule(event, rule) == 0) {
+ if (rule->ignore_device) {
+ info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
+ event->ignore_device = 1;
+ return 0;
+ }
+ if (rule->ignore_remove) {
+ udev_device_set_ignore_remove(dev, 1);
+ dbg(event->udev, "remove event should be ignored\n");
+ }
+
+ if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
+ struct udev_list_entry *list_entry;
+
+ if (rule->run.operation == KEY_OP_ASSIGN ||
+ rule->run.operation == KEY_OP_ASSIGN_FINAL) {
+ info(event->udev, "reset run list\n");
+ udev_list_cleanup(event->udev, &event->run_list);
+ }
+ dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
+ list_entry = udev_list_entry_add(event->udev, &event->run_list,
+ key_val(rule, &rule->run), NULL, 1, 0);
+ if (rule->run_ignore_error && list_entry != NULL)
+ udev_list_entry_set_flag(list_entry, 1);
+ if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
+ break;
+ }
+
+ if (rule->last_rule) {
+ dbg(event->udev, "last rule to be applied\n");
+ break;
+ }
+
+ if (rule->goto_label.operation != KEY_OP_UNSET) {
+ dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
+ udev_rules_iter_goto(&iter, rule->goto_rule_off);
+ }
+ }
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef UDEV_RULES_H
+#define UDEV_RULES_H
+
+#include "udev.h"
+
+#define PAIRS_MAX 5
+
+enum key_operation {
+ KEY_OP_UNSET,
+ KEY_OP_MATCH,
+ KEY_OP_NOMATCH,
+ KEY_OP_ADD,
+ KEY_OP_ASSIGN,
+ KEY_OP_ASSIGN_FINAL,
+};
+
+struct key {
+ enum key_operation operation;
+ size_t val_off;
+};
+
+struct key_pair {
+ struct key key;
+ size_t key_name_off;
+};
+
+struct key_pairs {
+ int count;
+ struct key_pair keys[PAIRS_MAX];
+};
+
+enum import_type {
+ IMPORT_UNSET,
+ IMPORT_PROGRAM,
+ IMPORT_FILE,
+ IMPORT_PARENT,
+};
+
+enum escape_type {
+ ESCAPE_UNSET,
+ ESCAPE_NONE,
+ ESCAPE_REPLACE,
+};
+
+struct udev_rule {
+ struct key action;
+ struct key devpath;
+ struct key kernel;
+ struct key subsystem;
+ struct key driver;
+ struct key_pairs attr;
+
+ struct key kernels;
+ struct key subsystems;
+ struct key drivers;
+ struct key_pairs attrs;
+
+ struct key_pairs env;
+ struct key program;
+ struct key result;
+ struct key import;
+ enum import_type import_type;
+ struct key test;
+ mode_t test_mode_mask;
+ struct key run;
+ struct key wait_for;
+ struct key label;
+ struct key goto_label;
+ size_t goto_rule_off;
+
+ struct key name;
+ struct key symlink;
+ struct key symlink_match;
+ struct key owner;
+ struct key group;
+ struct key mode;
+ enum escape_type string_escape;
+
+ unsigned int link_priority;
+ int event_timeout;
+ unsigned int partitions;
+ unsigned int last_rule:1,
+ run_ignore_error:1,
+ ignore_device:1,
+ ignore_remove:1;
+
+ size_t bufsize;
+ char buf[];
+};
+
+struct udev_rules {
+ struct udev *udev;
+ char *buf;
+ size_t bufsize;
+ int resolve_names;
+};
+
+struct udev_rules_iter {
+ struct udev_rules *rules;
+ size_t current;
+};
+
+extern int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names);
+extern void udev_rules_cleanup(struct udev_rules *rules);
+
+extern void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules);
+extern struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter);
+extern struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off);
+
+extern int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event);
+extern int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event);
+extern int udev_rules_run(struct udev_event *event);
+
+extern void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize);
+
+#endif
--- /dev/null
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <selinux/selinux.h>
+
+#include "udev.h"
+
+static int selinux_enabled;
+security_context_t selinux_prev_scontext;
+
+void selinux_init(struct udev *udev)
+{
+ /* record the present security context */
+ selinux_enabled = (is_selinux_enabled() > 0);
+ info(udev, "selinux=%i\n", selinux_enabled);
+ if (!selinux_enabled)
+ return;
+ matchpathcon_init_prefix(NULL, udev_get_dev_path(udev));
+ if (getfscreatecon(&selinux_prev_scontext) < 0) {
+ err(udev, "getfscreatecon failed\n");
+ selinux_prev_scontext = NULL;
+ }
+}
+
+void selinux_exit(struct udev *udev)
+{
+ if (!selinux_enabled)
+ return;
+ freecon(selinux_prev_scontext);
+ selinux_prev_scontext = NULL;
+}
+
+void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode)
+{
+ security_context_t scontext = NULL;
+
+ if (!selinux_enabled)
+ return;
+ if (matchpathcon(file, mode, &scontext) < 0) {
+ err(udev, "matchpathcon(%s) failed\n", file);
+ return;
+ }
+ if (lsetfilecon(file, scontext) < 0)
+ err(udev, "setfilecon %s failed: %m\n", file);
+ freecon(scontext);
+}
+
+void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode)
+{
+ security_context_t scontext = NULL;
+
+ if (!selinux_enabled)
+ return;
+ if (matchpathcon(file, mode, &scontext) < 0) {
+ err(udev, "matchpathcon(%s) failed\n", file);
+ return;
+ }
+ if (setfscreatecon(scontext) < 0)
+ err(udev, "setfscreatecon %s failed: %m\n", file);
+ freecon(scontext);
+}
+
+void udev_selinux_resetfscreatecon(struct udev *udev)
+{
+ if (!selinux_enabled)
+ return;
+ if (setfscreatecon(selinux_prev_scontext) < 0)
+ err(udev, "setfscreatecon failed: %m\n");
+}
--- /dev/null
+/*
+ * wrapping of libc features and kernel interfaces
+ *
+ * Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _UDEV_SYSDEPS_H_
+#define _UDEV_SYSDEPS_H_
+
+#include <stdint.h>
+
+/* needed for our signal handlers to work */
+#undef asmlinkage
+#ifdef __i386__
+#define asmlinkage __attribute__((regparm(0)))
+#else
+#define asmlinkage
+#endif /* __i386__ */
+
+#ifndef HAVE_INOTIFY
+static inline int inotify_init(void)
+{
+ return -1;
+}
+
+static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
+{
+ return -1;
+}
+
+#define IN_CREATE 0
+#define IN_DELETE 0
+#define IN_MOVE 0
+#define IN_CLOSE_WRITE 0
+
+#endif /* HAVE_INOTIFY */
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include "udev.h"
+
+int create_path(struct udev *udev, const char *path)
+{
+ char p[UTIL_PATH_SIZE];
+ char *pos;
+ struct stat stats;
+ int ret;
+
+ util_strlcpy(p, path, sizeof(p));
+ pos = strrchr(p, '/');
+ if (pos == p || pos == NULL)
+ return 0;
+
+ while (pos[-1] == '/')
+ pos--;
+ pos[0] = '\0';
+
+ dbg(udev, "stat '%s'\n", p);
+ if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
+ return 0;
+
+ if (create_path(udev, p) != 0)
+ return -1;
+
+ dbg(udev, "mkdir '%s'\n", p);
+ udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755);
+ ret = mkdir(p, 0755);
+ udev_selinux_resetfscreatecon(udev);
+ if (ret == 0)
+ return 0;
+
+ if (errno == EEXIST)
+ if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
+ return 0;
+ return -1;
+}
+
+int delete_path(struct udev *udev, const char *path)
+{
+ char p[UTIL_PATH_SIZE];
+ char *pos;
+ int retval;
+
+ strcpy (p, path);
+ pos = strrchr(p, '/');
+ if (pos == p || pos == NULL)
+ return 0;
+
+ while (1) {
+ *pos = '\0';
+ pos = strrchr(p, '/');
+
+ /* don't remove the last one */
+ if ((pos == p) || (pos == NULL))
+ break;
+
+ /* remove if empty */
+ retval = rmdir(p);
+ if (errno == ENOENT)
+ retval = 0;
+ if (retval) {
+ if (errno == ENOTEMPTY)
+ return 0;
+ err(udev, "rmdir(%s) failed: %m\n", p);
+ break;
+ }
+ dbg(udev, "removed '%s'\n", p);
+ }
+ return 0;
+}
+
+/* Reset permissions on the device node, before unlinking it to make sure,
+ * that permisions of possible hard links will be removed too.
+ */
+int unlink_secure(struct udev *udev, const char *filename)
+{
+ int retval;
+
+ retval = chown(filename, 0, 0);
+ if (retval)
+ err(udev, "chown(%s, 0, 0) failed: %m\n", filename);
+
+ retval = chmod(filename, 0000);
+ if (retval)
+ err(udev, "chmod(%s, 0000) failed: %m\n", filename);
+
+ retval = unlink(filename);
+ if (errno == ENOENT)
+ retval = 0;
+
+ if (retval)
+ err(udev, "unlink(%s) failed: %m\n", filename);
+
+ return retval;
+}
+
+int file_map(const char *filename, char **buf, size_t *bufsize)
+{
+ struct stat stats;
+ int fd;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ return -1;
+ }
+
+ if (fstat(fd, &stats) < 0) {
+ close(fd);
+ return -1;
+ }
+
+ *buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (*buf == MAP_FAILED) {
+ close(fd);
+ return -1;
+ }
+ *bufsize = stats.st_size;
+
+ close(fd);
+
+ return 0;
+}
+
+void file_unmap(void *buf, size_t bufsize)
+{
+ munmap(buf, bufsize);
+}
+
+/* return number of chars until the next newline, skip escaped newline */
+size_t buf_get_line(const char *buf, size_t buflen, size_t cur)
+{
+ int escape = 0;
+ size_t count;
+
+ for (count = cur; count < buflen; count++) {
+ if (!escape && buf[count] == '\n')
+ break;
+
+ if (buf[count] == '\\')
+ escape = 1;
+ else
+ escape = 0;
+ }
+
+ return count - cur;
+}
--- /dev/null
+/*
+ * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+
+#include "udev.h"
+
+struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort)
+{
+ struct name_entry *name_loop;
+ struct name_entry *name_new;
+
+ /* avoid duplicate entries */
+ list_for_each_entry(name_loop, name_list, node) {
+ if (strcmp(name_loop->name, name) == 0) {
+ dbg(udev, "'%s' is already in the list\n", name);
+ return name_loop;
+ }
+ }
+
+ if (sort)
+ list_for_each_entry(name_loop, name_list, node) {
+ if (strcmp(name_loop->name, name) > 0)
+ break;
+ }
+
+ name_new = malloc(sizeof(struct name_entry));
+ if (name_new == NULL)
+ return NULL;
+ memset(name_new, 0x00, sizeof(struct name_entry));
+ util_strlcpy(name_new->name, name, sizeof(name_new->name));
+ dbg(udev, "adding '%s'\n", name_new->name);
+ list_add_tail(&name_new->node, &name_loop->node);
+
+ return name_new;
+}
+
+struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value)
+{
+ struct name_entry *name_loop;
+ struct name_entry *name_new;
+ size_t keylen = strlen(key);
+
+ list_for_each_entry(name_loop, name_list, node) {
+ if (strncmp(name_loop->name, key, keylen) != 0)
+ continue;
+ if (name_loop->name[keylen] != '=')
+ continue;
+ dbg(udev, "key already present '%s', replace it\n", name_loop->name);
+ snprintf(name_loop->name, sizeof(name_loop->name), "%s=%s", key, value);
+ name_loop->name[sizeof(name_loop->name)-1] = '\0';
+ return name_loop;
+ }
+
+ name_new = malloc(sizeof(struct name_entry));
+ if (name_new == NULL)
+ return NULL;
+ memset(name_new, 0x00, sizeof(struct name_entry));
+ snprintf(name_new->name, sizeof(name_new->name), "%s=%s", key, value);
+ name_new->name[sizeof(name_new->name)-1] = '\0';
+ dbg(udev, "adding '%s'\n", name_new->name);
+ list_add_tail(&name_new->node, &name_loop->node);
+
+ return name_new;
+}
+
+int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key)
+{
+ struct name_entry *name_loop;
+ struct name_entry *name_tmp;
+ size_t keylen = strlen(key);
+ int retval = 0;
+
+ list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
+ if (strncmp(name_loop->name, key, keylen) != 0)
+ continue;
+ if (name_loop->name[keylen] != '=')
+ continue;
+ list_del(&name_loop->node);
+ free(name_loop);
+ retval = 1;
+ break;
+ }
+ return retval;
+}
+
+void name_list_cleanup(struct udev *udev, struct list_head *name_list)
+{
+ struct name_entry *name_loop;
+ struct name_entry *name_tmp;
+
+ list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
+ list_del(&name_loop->node);
+ free(name_loop);
+ }
+}
+
+/* calls function for every file found in specified directory */
+int add_matching_files(struct udev *udev, struct list_head *name_list, const char *dirname, const char *suffix)
+{
+ struct dirent *ent;
+ DIR *dir;
+ char filename[UTIL_PATH_SIZE];
+
+ dbg(udev, "open directory '%s'\n", dirname);
+ dir = opendir(dirname);
+ if (dir == NULL) {
+ err(udev, "unable to open '%s': %m\n", dirname);
+ return -1;
+ }
+
+ while (1) {
+ ent = readdir(dir);
+ if (ent == NULL || ent->d_name[0] == '\0')
+ break;
+
+ if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
+ continue;
+
+ /* look for file matching with specified suffix */
+ if (suffix != NULL) {
+ const char *ext;
+
+ ext = strrchr(ent->d_name, '.');
+ if (ext == NULL)
+ continue;
+ if (strcmp(ext, suffix) != 0)
+ continue;
+ }
+ dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
+
+ snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
+ filename[sizeof(filename)-1] = '\0';
+ name_list_add(udev, name_list, filename, 1);
+ }
+
+ closedir(dir);
+ return 0;
+}
+
+uid_t lookup_user(struct udev *udev, const char *user)
+{
+ struct passwd *pw;
+ uid_t uid = 0;
+
+ errno = 0;
+ pw = getpwnam(user);
+ if (pw == NULL) {
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err(udev, "specified user '%s' unknown\n", user);
+ else
+ err(udev, "error resolving user '%s': %m\n", user);
+ } else
+ uid = pw->pw_uid;
+
+ return uid;
+}
+
+extern gid_t lookup_group(struct udev *udev, const char *group)
+{
+ struct group *gr;
+ gid_t gid = 0;
+
+ errno = 0;
+ gr = getgrnam(group);
+ if (gr == NULL) {
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err(udev, "specified group '%s' unknown\n", group);
+ else
+ err(udev, "error resolving group '%s': %m\n", group);
+ } else
+ gid = gr->gr_gid;
+
+ return gid;
+}
+
#include <sys/types.h>
#include <sys/param.h>
-#include "udev_sysdeps.h"
+#include "udev-sysdeps.h"
#include "lib/libudev.h"
#include "lib/libudev-private.h"
#include "list.h"
+++ /dev/null
-/*
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <ctype.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#include <linux/sockios.h>
-
-#include "udev.h"
-#include "udev_rules.h"
-
-struct udev_event *udev_event_new(struct udev_device *dev)
-{
- struct udev_event *event;
-
- event = malloc(sizeof(struct udev_event));
- if (event == NULL)
- return NULL;
- memset(event, 0x00, sizeof(struct udev_event));
-
- event->dev = dev;
- event->udev = udev_device_get_udev(dev);
- udev_list_init(&event->run_list);
- event->mode = 0660;
- util_strlcpy(event->owner, "0", sizeof(event->owner));
- util_strlcpy(event->group, "0", sizeof(event->group));
-
- dbg(event->udev, "allocated event %p\n", event);
- return event;
-}
-
-void udev_event_unref(struct udev_event *event)
-{
- udev_list_cleanup(event->udev, &event->run_list);
- dbg(event->udev, "free event %p\n", event);
- free(event);
-}
-
-static void kernel_log(struct ifreq ifr)
-{
- int klog;
- FILE *f;
-
- klog = open("/dev/kmsg", O_WRONLY);
- if (klog < 0)
- return;
-
- f = fdopen(klog, "w");
- if (f == NULL) {
- close(klog);
- return;
- }
-
- fprintf(f, "<6>udev: renamed network interface %s to %s\n",
- ifr.ifr_name, ifr.ifr_newname);
- fclose(f);
-}
-
-static int rename_netif(struct udev_event *event)
-{
- struct udev_device *dev = event->dev;
- int sk;
- struct ifreq ifr;
- int err;
-
- info(event->udev, "changing net interface name from '%s' to '%s'\n",
- udev_device_get_sysname(dev), event->name);
- if (event->test)
- return 0;
-
- sk = socket(PF_INET, SOCK_DGRAM, 0);
- if (sk < 0) {
- err(event->udev, "error opening socket: %m\n");
- return -1;
- }
-
- memset(&ifr, 0x00, sizeof(struct ifreq));
- util_strlcpy(ifr.ifr_name, udev_device_get_sysname(dev), IFNAMSIZ);
- util_strlcpy(ifr.ifr_newname, event->name, IFNAMSIZ);
- err = ioctl(sk, SIOCSIFNAME, &ifr);
- if (err == 0)
- kernel_log(ifr);
- else {
- int loop;
-
- /* see if the destination interface name already exists */
- if (errno != EEXIST) {
- err(event->udev, "error changing netif name %s to %s: %m\n",
- ifr.ifr_name, ifr.ifr_newname);
- goto exit;
- }
-
- /* free our own name, another process may wait for us */
- util_strlcpy(ifr.ifr_newname, udev_device_get_sysname(dev), IFNAMSIZ);
- util_strlcat(ifr.ifr_newname, "_rename", IFNAMSIZ);
- err = ioctl(sk, SIOCSIFNAME, &ifr);
- if (err != 0) {
- err(event->udev, "error changing netif name %s to %s: %m\n",
- ifr.ifr_name, ifr.ifr_newname);
- goto exit;
- }
-
- /* wait 30 seconds for our target to become available */
- util_strlcpy(ifr.ifr_name, ifr.ifr_newname, IFNAMSIZ);
- util_strlcpy(ifr.ifr_newname, udev_device_get_devnode(dev), IFNAMSIZ);
- loop = 30 * 20;
- while (loop--) {
- err = ioctl(sk, SIOCSIFNAME, &ifr);
- if (err == 0) {
- kernel_log(ifr);
- break;
- }
-
- if (errno != EEXIST) {
- err(event->udev, "error changing net interface name %s to %s: %m\n",
- ifr.ifr_name, ifr.ifr_newname);
- break;
- }
- dbg(event->udev, "wait for netif '%s' to become free, loop=%i\n",
- udev_device_get_devnode(dev), (30 * 20) - loop);
- usleep(1000 * 1000 / 20);
- }
- }
-
-exit:
- close(sk);
- return err;
-}
-
-int udev_event_run(struct udev_event *event, struct udev_rules *rules)
-{
- struct udev_device *dev = event->dev;
- int err = 0;
-
- if (udev_device_get_devpath_old(dev) != NULL) {
- if (udev_device_rename_db(dev, udev_device_get_devpath(dev)) == 0)
- info(event->udev, "moved database from '%s' to '%s'\n",
- udev_device_get_devpath_old(dev), udev_device_get_devpath(dev));
- }
-
- /* add device node */
- if (major(udev_device_get_devnum(dev)) != 0 &&
- (strcmp(udev_device_get_action(dev), "add") == 0 || strcmp(udev_device_get_action(dev), "change") == 0)) {
- char filename[UTIL_PATH_SIZE];
- struct udev_device *dev_old;
-
- dbg(event->udev, "device node add '%s'\n", udev_device_get_devpath(dev));
-
- udev_rules_get_name(rules, event);
- if (event->ignore_device) {
- info(event->udev, "device event will be ignored\n");
- goto exit;
- }
-
- if (event->name[0] == '\0') {
- info(event->udev, "device node creation supressed\n");
- goto exit;
- }
-
- /* set device node name */
- util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, event->name, sizeof(filename));
- udev_device_set_devnode(dev, filename);
-
- /* read current database entry; cleanup, if it is known device */
- dev_old = udev_device_new_from_syspath(event->udev, udev_device_get_syspath(dev));
- if (dev_old != NULL) {
- info(event->udev, "device '%s' already in database, updating\n",
- udev_device_get_devpath(dev));
- udev_node_update_old_links(dev, dev_old, event->test);
- udev_device_unref(dev_old);
- }
-
- udev_device_update_db(dev);
-
- err = udev_node_add(dev, event->mode, event->owner, event->group, event->test);
- if (err != 0)
- goto exit;
-
- goto exit;
- }
-
- /* add netif */
- if (strcmp(udev_device_get_subsystem(dev), "net") == 0 && strcmp(udev_device_get_action(dev), "add") == 0) {
- dbg(event->udev, "netif add '%s'\n", udev_device_get_devpath(dev));
-
- udev_rules_get_name(rules, event);
- if (event->ignore_device) {
- info(event->udev, "device event will be ignored\n");
- goto exit;
- }
- if (event->name[0] == '\0') {
- info(event->udev, "device renaming supressed\n");
- goto exit;
- }
-
- /* look if we want to change the name of the netif */
- if (strcmp(event->name, udev_device_get_sysname(dev)) != 0) {
- char syspath[UTIL_PATH_SIZE];
- char *pos;
-
- err = rename_netif(event);
- if (err != 0)
- goto exit;
- info(event->udev, "renamed netif to '%s'\n", event->name);
-
- /* remember old name */
- udev_device_add_property(dev, "INTERFACE_OLD", udev_device_get_sysname(dev));
-
- /* now change the devpath, because the kernel device name has changed */
- util_strlcpy(syspath, udev_device_get_syspath(dev), sizeof(syspath));
- pos = strrchr(syspath, '/');
- if (pos != NULL) {
- pos[1] = '\0';
- util_strlcat(syspath, event->name, sizeof(syspath));
- udev_device_set_syspath(event->dev, syspath);
- udev_device_add_property(dev, "INTERFACE", udev_device_get_sysname(dev));
- info(event->udev, "changed devpath to '%s'\n", udev_device_get_devpath(dev));
- }
- }
- goto exit;
- }
-
- /* remove device node */
- if (major(udev_device_get_devnum(dev)) != 0 && strcmp(udev_device_get_action(dev), "remove") == 0) {
- /* import database entry and delete it */
- udev_device_read_db(dev);
- if (!event->test)
- udev_device_delete_db(dev);
-
- if (udev_device_get_devnode(dev) == NULL) {
- char devnode[UTIL_PATH_SIZE];
-
- info(event->udev, "'%s' not found in database, using kernel name '%s'\n",
- udev_device_get_syspath(dev), udev_device_get_sysname(dev));
- util_strlcpy(devnode, udev_get_dev_path(event->udev), sizeof(devnode));
- util_strlcat(devnode, "/", sizeof(devnode));
- util_strlcat(devnode, udev_device_get_sysname(dev), sizeof(devnode));
- udev_device_set_devnode(dev, devnode);
- }
-
- udev_rules_get_run(rules, event);
- if (event->ignore_device) {
- info(event->udev, "device event will be ignored\n");
- goto exit;
- }
-
- if (udev_device_get_ignore_remove(dev)) {
- info(event->udev, "ignore_remove for '%s'\n", udev_device_get_devnode(dev));
- goto exit;
- }
-
- err = udev_node_remove(dev, event->test);
- goto exit;
- }
-
- /* default devices */
- udev_rules_get_run(rules, event);
- if (event->ignore_device)
- info(event->udev, "device event will be ignored\n");
-exit:
- return err;
-}
+++ /dev/null
-/*
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <grp.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include "udev.h"
-#include "udev_rules.h"
-
-#define TMP_FILE_EXT ".udev-tmp"
-
-/* reverse mapping from the device file name to the devpath */
-static int name_index(struct udev *udev, const char *devpath, const char *name, int add, int test)
-{
- char device[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE * 2];
- size_t devlen = strlen(udev_get_dev_path(udev))+1;
- size_t start;
- int fd;
-
- /* directory with device name */
- util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
- start = util_strlcat(filename, "/.udev/names/", sizeof(filename));
- util_strlcat(filename, &name[devlen], sizeof(filename));
- util_path_encode(&filename[start], sizeof(filename) - start);
- /* entry with the devpath */
- util_strlcpy(device, devpath, sizeof(device));
- util_path_encode(device, sizeof(device));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, device, sizeof(filename));
-
- if (add) {
- info(udev, "creating index: '%s'\n", filename);
- create_path(udev, filename);
- fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
- if (fd > 0)
- close(fd);
- } else {
- info(udev, "removing index: '%s'\n", filename);
- unlink(filename);
- delete_path(udev, filename);
- }
- return 0;
-}
-
-int udev_node_mknod(struct udev_device *dev, const char *file, dev_t devnum, mode_t mode, uid_t uid, gid_t gid)
-{
- struct udev *udev = udev_device_get_udev(dev);
- char file_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
- struct stat stats;
- int preserve = 0;
- int err = 0;
-
- if (major(devnum) == 0)
- devnum = udev_device_get_devnum(dev);
-
- if (strcmp(udev_device_get_subsystem(dev), "block") == 0)
- mode |= S_IFBLK;
- else
- mode |= S_IFCHR;
-
- if (file == NULL)
- file = udev_device_get_devnode(dev);
-
- if (lstat(file, &stats) == 0) {
- if (((stats.st_mode & S_IFMT) == (mode & S_IFMT)) && (stats.st_rdev == devnum)) {
- info(udev, "preserve file '%s', because it has correct dev_t\n", file);
- preserve = 1;
- udev_selinux_lsetfilecon(udev, file, mode);
- } else {
- info(udev, "atomically replace existing file '%s'\n", file);
- util_strlcpy(file_tmp, file, sizeof(file_tmp));
- util_strlcat(file_tmp, TMP_FILE_EXT, sizeof(file_tmp));
- unlink(file_tmp);
- udev_selinux_setfscreatecon(udev, file_tmp, mode);
- err = mknod(file_tmp, mode, devnum);
- udev_selinux_resetfscreatecon(udev);
- if (err != 0) {
- err(udev, "mknod(%s, %#o, %u, %u) failed: %m\n",
- file_tmp, mode, major(devnum), minor(devnum));
- goto exit;
- }
- err = rename(file_tmp, file);
- if (err != 0) {
- err(udev, "rename(%s, %s) failed: %m\n", file_tmp, file);
- unlink(file_tmp);
- }
- }
- } else {
- info(udev, "mknod(%s, %#o, (%u,%u))\n", file, mode, major(devnum), minor(devnum));
- udev_selinux_setfscreatecon(udev, file, mode);
- err = mknod(file, mode, devnum);
- udev_selinux_resetfscreatecon(udev);
- if (err != 0) {
- err(udev, "mknod(%s, %#o, (%u,%u) failed: %m\n", file, mode, major(devnum), minor(devnum));
- goto exit;
- }
- }
-
- if (!preserve || stats.st_mode != mode) {
- info(udev, "chmod(%s, %#o)\n", file, mode);
- err = chmod(file, mode);
- if (err != 0) {
- err(udev, "chmod(%s, %#o) failed: %m\n", file, mode);
- goto exit;
- }
- }
-
- if (!preserve || stats.st_uid != uid || stats.st_gid != gid) {
- info(udev, "chown(%s, %u, %u)\n", file, uid, gid);
- err = chown(file, uid, gid);
- if (err != 0) {
- err(udev, "chown(%s, %u, %u) failed: %m\n", file, uid, gid);
- goto exit;
- }
- }
-exit:
- return err;
-}
-
-static int node_symlink(struct udev *udev, const char *node, const char *slink)
-{
- struct stat stats;
- char target[UTIL_PATH_SIZE] = "";
- char slink_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
- int i = 0;
- int tail = 0;
- int len;
- int err = 0;
-
- /* use relative link */
- while (node[i] && (node[i] == slink[i])) {
- if (node[i] == '/')
- tail = i+1;
- i++;
- }
- while (slink[i] != '\0') {
- if (slink[i] == '/')
- util_strlcat(target, "../", sizeof(target));
- i++;
- }
- util_strlcat(target, &node[tail], sizeof(target));
-
- /* preserve link with correct target, do not replace node of other device */
- if (lstat(slink, &stats) == 0) {
- if (S_ISBLK(stats.st_mode) || S_ISCHR(stats.st_mode)) {
- struct stat stats2;
-
- info(udev, "found existing node instead of symlink '%s'\n", slink);
- if (lstat(node, &stats2) == 0) {
- if ((stats.st_mode & S_IFMT) == (stats2.st_mode & S_IFMT) &&
- stats.st_rdev == stats2.st_rdev) {
- info(udev, "replace device node '%s' with symlink to our node '%s'\n",
- slink, node);
- } else {
- err(udev, "device node '%s' already exists, "
- "link to '%s' will not overwrite it\n",
- slink, node);
- goto exit;
- }
- }
- } else if (S_ISLNK(stats.st_mode)) {
- char buf[UTIL_PATH_SIZE];
-
- info(udev, "found existing symlink '%s'\n", slink);
- len = readlink(slink, buf, sizeof(buf));
- if (len > 0) {
- buf[len] = '\0';
- if (strcmp(target, buf) == 0) {
- info(udev, "preserve already existing symlink '%s' to '%s'\n",
- slink, target);
- udev_selinux_lsetfilecon(udev, slink, S_IFLNK);
- goto exit;
- }
- }
- }
- } else {
- info(udev, "creating symlink '%s' to '%s'\n", slink, target);
- udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
- err = symlink(target, slink);
- udev_selinux_resetfscreatecon(udev);
- if (err == 0)
- goto exit;
- }
-
- info(udev, "atomically replace '%s'\n", slink);
- util_strlcpy(slink_tmp, slink, sizeof(slink_tmp));
- util_strlcat(slink_tmp, TMP_FILE_EXT, sizeof(slink_tmp));
- unlink(slink_tmp);
- udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
- err = symlink(target, slink_tmp);
- udev_selinux_resetfscreatecon(udev);
- if (err != 0) {
- err(udev, "symlink(%s, %s) failed: %m\n", target, slink_tmp);
- goto exit;
- }
- err = rename(slink_tmp, slink);
- if (err != 0) {
- err(udev, "rename(%s, %s) failed: %m\n", slink_tmp, slink);
- unlink(slink_tmp);
- goto exit;
- }
-exit:
- return err;
-}
-
-static int get_devices_by_name(struct udev *udev, const char *name, struct list_head *name_list)
-{
- char dirname[PATH_MAX];
- size_t devlen = strlen(udev_get_dev_path(udev))+1;
- size_t start;
- DIR *dir;
- int count = 0;
-
- util_strlcpy(dirname, udev_get_dev_path(udev), sizeof(dirname));
- start = util_strlcat(dirname, "/.udev/names/", sizeof(dirname));
- util_strlcat(dirname, &name[devlen], sizeof(dirname));
- util_path_encode(&dirname[start], sizeof(dirname) - start);
-
- dir = opendir(dirname);
- if (dir == NULL) {
- info(udev, "no index directory '%s': %m\n", dirname);
- count = -1;
- goto out;
- }
-
- info(udev, "found index directory '%s'\n", dirname);
- while (1) {
- struct dirent *ent;
- char device[UTIL_PATH_SIZE];
-
- ent = readdir(dir);
- if (ent == NULL || ent->d_name[0] == '\0')
- break;
- if (ent->d_name[0] == '.')
- continue;
-
- util_strlcpy(device, udev_get_sys_path(udev), sizeof(device));
- util_strlcat(device, ent->d_name, sizeof(device));
- util_path_decode(device);
- name_list_add(udev, name_list, device, 0);
- count++;
- }
- closedir(dir);
-out:
- return count;
-}
-
-static int update_link(struct udev_device *dev, const char *slink, int test)
-{
- struct udev *udev = udev_device_get_udev(dev);
- LIST_HEAD(name_list);
- struct name_entry *device;
- char target[UTIL_PATH_SIZE] = "";
- int count;
- int priority = 0;
- int rc = 0;
-
- info(udev, "update symlink '%s' of '%s'\n", slink, udev_device_get_syspath(dev));
-
- count = get_devices_by_name(udev, slink, &name_list);
- info(udev, "found %i devices with name '%s'\n", count, slink);
-
- /* if we don't have a reference, delete it */
- if (count <= 0) {
- info(udev, "no reference left, remove '%s'\n", slink);
- if (!test) {
- unlink(slink);
- delete_path(udev, slink);
- }
- goto out;
- }
-
- /* find the device with the highest priority */
- list_for_each_entry(device, &name_list, node) {
- struct udev_device *dev_db;
- const char *devnode;
-
- info(udev, "found '%s' for '%s'\n", device->name, slink);
-
- /* did we find ourself? we win, if we have the same priority */
- if (strcmp(udev_device_get_syspath(dev), device->name) == 0) {
- info(udev, "compare (our own) priority of '%s' %i >= %i\n",
- udev_device_get_devpath(dev), udev_device_get_devlink_priority(dev), priority);
- if (strcmp(udev_device_get_devnode(dev), slink) == 0) {
- info(udev, "'%s' is our device node, database inconsistent, skip link update\n",
- udev_device_get_devnode(dev));
- } else if (target[0] == '\0' || udev_device_get_devlink_priority(dev) >= priority) {
- priority = udev_device_get_devlink_priority(dev);
- util_strlcpy(target, udev_device_get_devnode(dev), sizeof(target));
- }
- continue;
- }
-
- /* another device, read priority from database */
- dev_db = udev_device_new_from_syspath(udev, device->name);
- if (dev_db == NULL)
- continue;
- devnode = udev_device_get_devnode(dev_db);
- if (devnode != NULL) {
- if (strcmp(devnode, slink) == 0) {
- info(udev, "'%s' is a device node of '%s', skip link update\n",
- devnode, device->name);
- } else {
- info(udev, "compare priority of '%s' %i > %i\n",
- udev_device_get_devpath(dev_db),
- udev_device_get_devlink_priority(dev_db),
- priority);
- if (target[0] == '\0' || udev_device_get_devlink_priority(dev_db) > priority) {
- priority = udev_device_get_devlink_priority(dev_db);
- util_strlcpy(target, devnode, sizeof(target));
- }
- }
- }
- udev_device_unref(dev_db);
- }
- name_list_cleanup(udev, &name_list);
-
- if (target[0] == '\0') {
- info(udev, "no current target for '%s' found\n", slink);
- rc = 1;
- goto out;
- }
-
- /* create symlink to the target with the highest priority */
- info(udev, "'%s' with target '%s' has the highest priority %i, create it\n", slink, target, priority);
- if (!test) {
- create_path(udev, slink);
- node_symlink(udev, target, slink);
- }
-out:
- return rc;
-}
-
-void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old, int test)
-{
- struct udev *udev = udev_device_get_udev(dev);
- struct udev_list_entry *list_entry;
- const char *devnode_old;
-
- /* update possible left-over symlinks */
- udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev_old)) {
- struct udev_list_entry *list_entry_current;
-
- udev_list_entry_foreach(list_entry_current, udev_device_get_devlinks_list_entry(dev)) {
- if (strcmp(udev_list_entry_get_name(list_entry_current),
- udev_list_entry_get_name(list_entry)) == 0)
- continue;
- }
- /* link does no longer belong to this device */
- info(udev, "update old symlink '%s' no longer belonging to '%s'\n",
- udev_list_entry_get_name(list_entry), udev_device_get_devpath(dev));
- update_link(dev, udev_list_entry_get_name(list_entry), test);
- }
-
- /*
- * if the node name has changed, delete the node,
- * and possibly restore a symlink of another device
- */
- devnode_old = udev_device_get_devnode(dev_old);
- if (devnode_old != NULL) {
- const char *devnode = udev_device_get_devnode(dev);
-
- if (devnode != NULL && strcmp(devnode_old, devnode) != 0)
- update_link(dev, devnode_old, test);
- }
-}
-
-int udev_node_add(struct udev_device *dev, mode_t mode, const char *owner, const char *group, int test)
-{
- struct udev *udev = udev_device_get_udev(dev);
- uid_t uid;
- gid_t gid;
- int i;
- int num;
- struct udev_list_entry *list_entry;
- int err = 0;
-
- create_path(udev, udev_device_get_devnode(dev));
-
- if (strcmp(owner, "root") == 0)
- uid = 0;
- else {
- char *endptr;
- unsigned long id;
-
- id = strtoul(owner, &endptr, 10);
- if (endptr[0] == '\0')
- uid = (uid_t) id;
- else
- uid = lookup_user(udev, owner);
- }
-
- if (strcmp(group, "root") == 0)
- gid = 0;
- else {
- char *endptr;
- unsigned long id;
-
- id = strtoul(group, &endptr, 10);
- if (endptr[0] == '\0')
- gid = (gid_t) id;
- else
- gid = lookup_group(udev, group);
- }
-
- info(udev, "creating device node '%s', devnum=%d:%d, mode=%#o, uid=%d, gid=%d\n",
- udev_device_get_devnode(dev),
- major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)),
- mode, uid, gid);
-
- if (!test)
- if (udev_node_mknod(dev, NULL, makedev(0,0), mode, uid, gid) != 0) {
- err = -1;
- goto exit;
- }
-
- /* create all_partitions if requested */
- num = udev_device_get_num_fake_partitions(dev);
- if (num > 0) {
- info(udev, "creating device partition nodes '%s[1-%i]'\n", udev_device_get_devnode(dev), num);
- if (!test) {
- for (i = 1; i <= num; i++) {
- char partitionname[UTIL_PATH_SIZE];
- dev_t part_devnum;
-
- snprintf(partitionname, sizeof(partitionname), "%s%d",
- udev_device_get_devnode(dev), i);
- partitionname[sizeof(partitionname)-1] = '\0';
- part_devnum = makedev(major(udev_device_get_devnum(dev)),
- minor(udev_device_get_devnum(dev)) + i);
- udev_node_mknod(dev, partitionname, part_devnum, mode, uid, gid);
- }
- }
- }
-
- /* add node and to name index */
- name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 1, test);
-
- /* create/update symlinks, add symlinks to name index */
- udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
- name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 1, test);
- update_link(dev, udev_list_entry_get_name(list_entry), test);
- }
-exit:
- return err;
-}
-
-extern int udev_node_remove(struct udev_device *dev, int test)
-{
- struct udev *udev = udev_device_get_udev(dev);
- struct udev_list_entry *list_entry;
- const char *devnode;
- char partitionname[UTIL_PATH_SIZE];
- struct stat stats;
- int err = 0;
- int num;
-
- /* remove node from name index */
- name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 0, test);
-
- /* remove,update symlinks, remove symlinks from name index */
- udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
- name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 0, test);
- update_link(dev, udev_list_entry_get_name(list_entry), test);
- }
-
- devnode = udev_device_get_devnode(dev);
- if (devnode == NULL)
- return 0;
- if (stat(devnode, &stats) != 0) {
- info(udev, "device node '%s' not found\n", devnode);
- return 0;
- }
- if (stats.st_rdev != udev_device_get_devnum(dev)) {
- info(udev, "device node '%s' points to a different device, skip removal\n", devnode);
- return -1;
- }
-
- info(udev, "removing device node '%s'\n", devnode);
- if (!test)
- err = unlink_secure(udev, devnode);
- if (err)
- return err;
-
- num = udev_device_get_num_fake_partitions(dev);
- if (num > 0) {
- int i;
-
- info(udev, "removing all_partitions '%s[1-%i]'\n", devnode, num);
- if (num > 255)
- return -1;
- for (i = 1; i <= num; i++) {
- snprintf(partitionname, sizeof(partitionname), "%s%d", devnode, i);
- partitionname[sizeof(partitionname)-1] = '\0';
- if (!test)
- unlink_secure(udev, partitionname);
- }
- }
- delete_path(udev, devnode);
- return err;
-}
+++ /dev/null
-/*
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <errno.h>
-#include <syslog.h>
-#include <dirent.h>
-#include <fnmatch.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-
-#include "udev.h"
-#include "udev_rules.h"
-
-extern char **environ;
-
-/* extract possible {attr} and move str behind it */
-static char *get_format_attribute(struct udev *udev, char **str)
-{
- char *pos;
- char *attr = NULL;
-
- if (*str[0] == '{') {
- pos = strchr(*str, '}');
- if (pos == NULL) {
- err(udev, "missing closing brace for format\n");
- return NULL;
- }
- pos[0] = '\0';
- attr = *str+1;
- *str = pos+1;
- dbg(udev, "attribute='%s', str='%s'\n", attr, *str);
- }
- return attr;
-}
-
-/* extract possible format length and move str behind it*/
-static int get_format_len(struct udev *udev, char **str)
-{
- int num;
- char *tail;
-
- if (isdigit(*str[0])) {
- num = (int) strtoul(*str, &tail, 10);
- if (num > 0) {
- *str = tail;
- dbg(udev, "format length=%i\n", num);
- return num;
- } else {
- err(udev, "format parsing error '%s'\n", *str);
- }
- }
- return -1;
-}
-
-static int get_key(char **line, char **key, char **value)
-{
- char *linepos;
- char *temp;
-
- linepos = *line;
- if (linepos == NULL)
- return -1;
-
- /* skip whitespace */
- while (isspace(linepos[0]))
- linepos++;
-
- /* get the key */
- temp = strchr(linepos, '=');
- if (temp == NULL || temp == linepos)
- return -1;
- temp[0] = '\0';
- *key = linepos;
- linepos = &temp[1];
-
- /* get a quoted value */
- if (linepos[0] == '"' || linepos[0] == '\'') {
- temp = strchr(&linepos[1], linepos[0]);
- if (temp != NULL) {
- temp[0] = '\0';
- *value = &linepos[1];
- goto out;
- }
- }
-
- /* get the value*/
- temp = strchr(linepos, '\n');
- if (temp != NULL)
- temp[0] = '\0';
- *value = linepos;
-out:
- return 0;
-}
-
-static int run_program(struct udev_device *dev, const char *command,
- char *result, size_t ressize, size_t *reslen)
-{
- struct udev *udev = udev_device_get_udev(dev);
- int status;
- char **envp;
- int outpipe[2] = {-1, -1};
- int errpipe[2] = {-1, -1};
- pid_t pid;
- char arg[UTIL_PATH_SIZE];
- char program[UTIL_PATH_SIZE];
- char *argv[(sizeof(arg) / 2) + 1];
- int devnull;
- int i;
- int err = 0;
-
- /* build argv from command */
- util_strlcpy(arg, command, sizeof(arg));
- i = 0;
- if (strchr(arg, ' ') != NULL) {
- char *pos = arg;
-
- while (pos != NULL) {
- if (pos[0] == '\'') {
- /* don't separate if in apostrophes */
- pos++;
- argv[i] = strsep(&pos, "\'");
- while (pos != NULL && pos[0] == ' ')
- pos++;
- } else {
- argv[i] = strsep(&pos, " ");
- }
- dbg(udev, "arg[%i] '%s'\n", i, argv[i]);
- i++;
- }
- argv[i] = NULL;
- } else {
- argv[0] = arg;
- argv[1] = NULL;
- }
- info(udev, "'%s'\n", command);
-
- /* prepare pipes from child to parent */
- if (result != NULL || udev_get_log_priority(udev) >= LOG_INFO) {
- if (pipe(outpipe) != 0) {
- err(udev, "pipe failed: %m\n");
- return -1;
- }
- }
- if (udev_get_log_priority(udev) >= LOG_INFO) {
- if (pipe(errpipe) != 0) {
- err(udev, "pipe failed: %m\n");
- return -1;
- }
- }
-
- /* allow programs in /lib/udev/ to be called without the path */
- if (strchr(argv[0], '/') == NULL) {
- util_strlcpy(program, UDEV_PREFIX "/lib/udev/", sizeof(program));
- util_strlcat(program, argv[0], sizeof(program));
- argv[0] = program;
- }
-
- envp = udev_device_get_properties_envp(dev);
-
- pid = fork();
- switch(pid) {
- case 0:
- /* child closes parent ends of pipes */
- if (outpipe[READ_END] > 0)
- close(outpipe[READ_END]);
- if (errpipe[READ_END] > 0)
- close(errpipe[READ_END]);
-
- /* discard child output or connect to pipe */
- devnull = open("/dev/null", O_RDWR);
- if (devnull > 0) {
- dup2(devnull, STDIN_FILENO);
- if (outpipe[WRITE_END] < 0)
- dup2(devnull, STDOUT_FILENO);
- if (errpipe[WRITE_END] < 0)
- dup2(devnull, STDERR_FILENO);
- close(devnull);
- } else
- err(udev, "open /dev/null failed: %m\n");
- if (outpipe[WRITE_END] > 0) {
- dup2(outpipe[WRITE_END], STDOUT_FILENO);
- close(outpipe[WRITE_END]);
- }
- if (errpipe[WRITE_END] > 0) {
- dup2(errpipe[WRITE_END], STDERR_FILENO);
- close(errpipe[WRITE_END]);
- }
- execve(argv[0], argv, envp);
- if (errno == ENOENT || errno == ENOTDIR) {
- /* may be on a filesytem which is not mounted right now */
- info(udev, "program '%s' not found\n", argv[0]);
- } else {
- /* other problems */
- err(udev, "exec of program '%s' failed\n", argv[0]);
- }
- _exit(1);
- case -1:
- err(udev, "fork of '%s' failed: %m\n", argv[0]);
- return -1;
- default:
- /* read from child if requested */
- if (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
- ssize_t count;
- size_t respos = 0;
-
- /* parent closes child ends of pipes */
- if (outpipe[WRITE_END] > 0)
- close(outpipe[WRITE_END]);
- if (errpipe[WRITE_END] > 0)
- close(errpipe[WRITE_END]);
-
- /* read child output */
- while (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
- int fdcount;
- fd_set readfds;
-
- FD_ZERO(&readfds);
- if (outpipe[READ_END] > 0)
- FD_SET(outpipe[READ_END], &readfds);
- if (errpipe[READ_END] > 0)
- FD_SET(errpipe[READ_END], &readfds);
- fdcount = select(UDEV_MAX(outpipe[READ_END], errpipe[READ_END])+1, &readfds, NULL, NULL, NULL);
- if (fdcount < 0) {
- if (errno == EINTR)
- continue;
- err = -1;
- break;
- }
-
- /* get stdout */
- if (outpipe[READ_END] > 0 && FD_ISSET(outpipe[READ_END], &readfds)) {
- char inbuf[1024];
- char *pos;
- char *line;
-
- count = read(outpipe[READ_END], inbuf, sizeof(inbuf)-1);
- if (count <= 0) {
- close(outpipe[READ_END]);
- outpipe[READ_END] = -1;
- if (count < 0) {
- err(udev, "stdin read failed: %m\n");
- err = -1;
- }
- continue;
- }
- inbuf[count] = '\0';
-
- /* store result for rule processing */
- if (result) {
- if (respos + count < ressize) {
- memcpy(&result[respos], inbuf, count);
- respos += count;
- } else {
- err(udev, "ressize %ld too short\n", (long)ressize);
- err = -1;
- }
- }
- pos = inbuf;
- while ((line = strsep(&pos, "\n")))
- if (pos || line[0] != '\0')
- info(udev, "'%s' (stdout) '%s'\n", argv[0], line);
- }
-
- /* get stderr */
- if (errpipe[READ_END] > 0 && FD_ISSET(errpipe[READ_END], &readfds)) {
- char errbuf[1024];
- char *pos;
- char *line;
-
- count = read(errpipe[READ_END], errbuf, sizeof(errbuf)-1);
- if (count <= 0) {
- close(errpipe[READ_END]);
- errpipe[READ_END] = -1;
- if (count < 0)
- err(udev, "stderr read failed: %m\n");
- continue;
- }
- errbuf[count] = '\0';
- pos = errbuf;
- while ((line = strsep(&pos, "\n")))
- if (pos || line[0] != '\0')
- info(udev, "'%s' (stderr) '%s'\n", argv[0], line);
- }
- }
- if (outpipe[READ_END] > 0)
- close(outpipe[READ_END]);
- if (errpipe[READ_END] > 0)
- close(errpipe[READ_END]);
-
- /* return the childs stdout string */
- if (result) {
- result[respos] = '\0';
- dbg(udev, "result='%s'\n", result);
- if (reslen)
- *reslen = respos;
- }
- }
- waitpid(pid, &status, 0);
- if (WIFEXITED(status)) {
- info(udev, "'%s' returned with status %i\n", argv[0], WEXITSTATUS(status));
- if (WEXITSTATUS(status) != 0)
- err = -1;
- } else {
- err(udev, "'%s' abnormal exit\n", argv[0]);
- err = -1;
- }
- }
-
- return err;
-}
-
-static int import_keys_into_env(struct udev_event *event, const char *buf, size_t bufsize)
-{
- struct udev_device *dev = event->dev;
- char line[UTIL_LINE_SIZE];
- const char *bufline;
- char *linepos;
- char *variable;
- char *value;
- size_t cur;
- size_t count;
- int lineno;
-
- /* loop through the whole buffer */
- lineno = 0;
- cur = 0;
- while (cur < bufsize) {
- count = buf_get_line(buf, bufsize, cur);
- bufline = &buf[cur];
- cur += count+1;
- lineno++;
-
- /* eat the whitespace */
- while ((count > 0) && isspace(bufline[0])) {
- bufline++;
- count--;
- }
- if (count == 0)
- continue;
-
- /* see if this is a comment */
- if (bufline[0] == '#')
- continue;
-
- if (count >= sizeof(line)) {
- err(event->udev, "line too long, skipped\n");
- continue;
- }
-
- memcpy(line, bufline, count);
- line[count] = '\0';
-
- linepos = line;
- if (get_key(&linepos, &variable, &value) == 0) {
- char syspath[UTIL_PATH_SIZE];
-
- dbg(event->udev, "import '%s=%s'\n", variable, value);
- /* handle device, renamed by external tool, returning new path */
- if (strcmp(variable, "DEVPATH") == 0) {
- info(event->udev, "updating devpath from '%s' to '%s'\n",
- udev_device_get_devpath(dev), value);
- util_strlcpy(syspath, udev_get_sys_path(event->udev), sizeof(syspath));
- util_strlcat(syspath, value, sizeof(syspath));
- udev_device_set_syspath(dev, syspath);
- } else {
- struct udev_list_entry *entry;
-
- entry = udev_device_add_property(dev, variable, value);
- /* store in db */
- udev_list_entry_set_flag(entry, 1);
- }
- }
- }
- return 0;
-}
-
-static int import_file_into_env(struct udev_event *event, const char *filename)
-{
- char *buf;
- size_t bufsize;
-
- if (file_map(filename, &buf, &bufsize) != 0) {
- err(event->udev, "can't open '%s': %m\n", filename);
- return -1;
- }
- import_keys_into_env(event, buf, bufsize);
- file_unmap(buf, bufsize);
-
- return 0;
-}
-
-static int import_program_into_env(struct udev_event *event, const char *program)
-{
- char result[2048];
- size_t reslen;
-
- if (run_program(event->dev, program, result, sizeof(result), &reslen) != 0)
- return -1;
- return import_keys_into_env(event, result, reslen);
-}
-
-static int import_parent_into_env(struct udev_event *event, const char *filter)
-{
- struct udev_device *dev_parent;
- struct udev_list_entry *list_entry;
-
- dev_parent = udev_device_get_parent(event->dev);
- if (dev_parent == NULL)
- return -1;
-
- dbg(event->udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
- udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
- const char *key = udev_list_entry_get_name(list_entry);
- const char *val = udev_list_entry_get_value(list_entry);
-
- if (fnmatch(filter, key, 0) == 0) {
- struct udev_list_entry *entry;
-
- dbg(event->udev, "import key '%s=%s'\n", key, val);
- entry = udev_device_add_property(event->dev, key, val);
- /* store in db */
- udev_list_entry_set_flag(entry, 1);
- }
- }
- return 0;
-}
-
-int udev_rules_run(struct udev_event *event)
-{
- struct udev_list_entry *list_entry;
- int err = 0;
-
- dbg(event->udev, "executing run list\n");
- udev_list_entry_foreach(list_entry, udev_list_get_entry(&event->run_list)) {
- const char *cmd = udev_list_entry_get_name(list_entry);
-
- if (strncmp(cmd, "socket:", strlen("socket:")) == 0) {
- struct udev_monitor *monitor;
-
- monitor = udev_monitor_new_from_socket(event->udev, &cmd[strlen("socket:")]);
- if (monitor == NULL)
- continue;
- udev_monitor_send_device(monitor, event->dev);
- udev_monitor_unref(monitor);
- } else {
- char program[UTIL_PATH_SIZE];
-
- util_strlcpy(program, cmd, sizeof(program));
- udev_rules_apply_format(event, program, sizeof(program));
- if (run_program(event->dev, program, NULL, 0, NULL) != 0) {
- if (!udev_list_entry_get_flag(list_entry))
- err = -1;
- }
- }
- }
- return err;
-}
-
-#define WAIT_LOOP_PER_SECOND 50
-static int wait_for_file(struct udev_event *event, const char *file, int timeout)
-{
- char filepath[UTIL_PATH_SIZE];
- char devicepath[UTIL_PATH_SIZE] = "";
- struct stat stats;
- int loop = timeout * WAIT_LOOP_PER_SECOND;
-
- /* a relative path is a device attribute */
- if (file[0] != '/') {
- util_strlcpy(devicepath, udev_get_sys_path(event->udev), sizeof(devicepath));
- util_strlcat(devicepath, udev_device_get_devpath(event->dev), sizeof(devicepath));
-
- util_strlcpy(filepath, devicepath, sizeof(filepath));
- util_strlcat(filepath, "/", sizeof(filepath));
- util_strlcat(filepath, file, sizeof(filepath));
- file = filepath;
- }
-
- dbg(event->udev, "will wait %i sec for '%s'\n", timeout, file);
- while (--loop) {
- /* lookup file */
- if (stat(file, &stats) == 0) {
- info(event->udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
- return 0;
- }
- /* make sure, the device did not disappear in the meantime */
- if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
- info(event->udev, "device disappeared while waiting for '%s'\n", file);
- return -2;
- }
- info(event->udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
- usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
- }
- info(event->udev, "waiting for '%s' failed\n", file);
- return -1;
-}
-
-/* handle "[$SUBSYSTEM/$KERNEL]<attribute>" lookup */
-static int split_subsys_sysname(struct udev *udev, char *attrstr, char **subsys, char **sysname, char **attr)
-{
- char *pos;
-
- if (attrstr[0] != '[')
- return -1;
-
- *subsys = &attrstr[1];
- pos = strchr(*subsys, ']');
- if (pos == NULL)
- return -1;
- pos[0] = '\0';
- pos = &pos[1];
-
- if (pos[0] == '/')
- pos = &pos[1];
- if (pos[0] != '\0')
- *attr = pos;
- else
- *attr = NULL;
-
- pos = strchr(*subsys, '/');
- if (pos == NULL)
- return -1;
- pos[0] = '\0';
- *sysname = &pos[1];
- return 0;
-}
-
-static int attr_subst_subdir(char *attr, size_t len)
-{
- char *pos;
- int found = 0;
-
- pos = strstr(attr, "/*/");
- if (pos != NULL) {
- char str[UTIL_PATH_SIZE];
- DIR *dir;
-
- pos[1] = '\0';
- util_strlcpy(str, &pos[2], sizeof(str));
- dir = opendir(attr);
- if (dir != NULL) {
- struct dirent *dent;
-
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- struct stat stats;
-
- if (dent->d_name[0] == '.')
- continue;
- util_strlcat(attr, dent->d_name, len);
- util_strlcat(attr, str, len);
- if (stat(attr, &stats) == 0) {
- found = 1;
- break;
- }
- pos[1] = '\0';
- }
- closedir(dir);
- }
- if (!found)
- util_strlcat(attr, str, len);
- }
-
- return found;
-}
-
-void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize)
-{
- struct udev_device *dev = event->dev;
- char temp[UTIL_PATH_SIZE];
- char temp2[UTIL_PATH_SIZE];
- char *head, *tail, *cpos, *attr, *rest;
- int len;
- int i;
- int count;
- enum subst_type {
- SUBST_UNKNOWN,
- SUBST_DEVPATH,
- SUBST_KERNEL,
- SUBST_KERNEL_NUMBER,
- SUBST_ID,
- SUBST_DRIVER,
- SUBST_MAJOR,
- SUBST_MINOR,
- SUBST_RESULT,
- SUBST_ATTR,
- SUBST_PARENT,
- SUBST_TEMP_NODE,
- SUBST_NAME,
- SUBST_LINKS,
- SUBST_ROOT,
- SUBST_SYS,
- SUBST_ENV,
- };
- static const struct subst_map {
- char *name;
- char fmt;
- enum subst_type type;
- } map[] = {
- { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
- { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
- { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL },
- { .name = "id", .fmt = 'b', .type = SUBST_ID },
- { .name = "driver", .fmt = 'd', .type = SUBST_DRIVER },
- { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
- { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
- { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
- { .name = "attr", .fmt = 's', .type = SUBST_ATTR },
- { .name = "sysfs", .fmt = 's', .type = SUBST_ATTR },
- { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
- { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
- { .name = "name", .fmt = 'D', .type = SUBST_NAME },
- { .name = "links", .fmt = 'L', .type = SUBST_LINKS },
- { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
- { .name = "sys", .fmt = 'S', .type = SUBST_SYS },
- { .name = "env", .fmt = 'E', .type = SUBST_ENV },
- { NULL, '\0', 0 }
- };
- enum subst_type type;
- const struct subst_map *subst;
-
- head = string;
- while (1) {
- len = -1;
- while (head[0] != '\0') {
- if (head[0] == '$') {
- /* substitute named variable */
- if (head[1] == '\0')
- break;
- if (head[1] == '$') {
- util_strlcpy(temp, head+2, sizeof(temp));
- util_strlcpy(head+1, temp, maxsize);
- head++;
- continue;
- }
- head[0] = '\0';
- for (subst = map; subst->name; subst++) {
- if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
- type = subst->type;
- tail = head + strlen(subst->name)+1;
- dbg(event->udev, "will substitute format name '%s'\n", subst->name);
- goto found;
- }
- }
- head[0] = '$';
- err(event->udev, "unknown format variable '%s'\n", head);
- } else if (head[0] == '%') {
- /* substitute format char */
- if (head[1] == '\0')
- break;
- if (head[1] == '%') {
- util_strlcpy(temp, head+2, sizeof(temp));
- util_strlcpy(head+1, temp, maxsize);
- head++;
- continue;
- }
- head[0] = '\0';
- tail = head+1;
- len = get_format_len(event->udev, &tail);
- for (subst = map; subst->name; subst++) {
- if (tail[0] == subst->fmt) {
- type = subst->type;
- tail++;
- dbg(event->udev, "will substitute format char '%c'\n", subst->fmt);
- goto found;
- }
- }
- head[0] = '%';
- err(event->udev, "unknown format char '%c'\n", tail[0]);
- }
- head++;
- }
- break;
-found:
- attr = get_format_attribute(event->udev, &tail);
- util_strlcpy(temp, tail, sizeof(temp));
- dbg(event->udev, "format=%i, string='%s', tail='%s'\n", type ,string, tail);
-
- switch (type) {
- case SUBST_DEVPATH:
- util_strlcat(string, udev_device_get_devpath(dev), maxsize);
- dbg(event->udev, "substitute devpath '%s'\n", udev_device_get_devpath(dev));
- break;
- case SUBST_KERNEL:
- util_strlcat(string, udev_device_get_sysname(dev), maxsize);
- dbg(event->udev, "substitute kernel name '%s'\n", udev_device_get_sysname(dev));
- break;
- case SUBST_KERNEL_NUMBER:
- if (udev_device_get_sysnum(dev) == NULL)
- break;
- util_strlcat(string, udev_device_get_sysnum(dev), maxsize);
- dbg(event->udev, "substitute kernel number '%s'\n", udev_device_get_sysnum(dev));
- break;
- case SUBST_ID:
- if (event->dev_parent != NULL) {
- util_strlcat(string, udev_device_get_sysname(event->dev_parent), maxsize);
- dbg(event->udev, "substitute id '%s'\n", udev_device_get_sysname(event->dev_parent));
- }
- break;
- case SUBST_DRIVER:
- if (event->dev_parent != NULL) {
- const char *driver = udev_device_get_driver(event->dev_parent);
-
- if (driver == NULL)
- break;
- util_strlcat(string, driver, maxsize);
- dbg(event->udev, "substitute driver '%s'\n", driver);
- }
- break;
- case SUBST_MAJOR:
- sprintf(temp2, "%d", major(udev_device_get_devnum(dev)));
- util_strlcat(string, temp2, maxsize);
- dbg(event->udev, "substitute major number '%s'\n", temp2);
- break;
- case SUBST_MINOR:
- sprintf(temp2, "%d", minor(udev_device_get_devnum(dev)));
- util_strlcat(string, temp2, maxsize);
- dbg(event->udev, "substitute minor number '%s'\n", temp2);
- break;
- case SUBST_RESULT:
- if (event->program_result[0] == '\0')
- break;
- /* get part part of the result string */
- i = 0;
- if (attr != NULL)
- i = strtoul(attr, &rest, 10);
- if (i > 0) {
- dbg(event->udev, "request part #%d of result string\n", i);
- cpos = event->program_result;
- while (--i) {
- while (cpos[0] != '\0' && !isspace(cpos[0]))
- cpos++;
- while (isspace(cpos[0]))
- cpos++;
- }
- if (i > 0) {
- err(event->udev, "requested part of result string not found\n");
- break;
- }
- util_strlcpy(temp2, cpos, sizeof(temp2));
- /* %{2+}c copies the whole string from the second part on */
- if (rest[0] != '+') {
- cpos = strchr(temp2, ' ');
- if (cpos)
- cpos[0] = '\0';
- }
- util_strlcat(string, temp2, maxsize);
- dbg(event->udev, "substitute part of result string '%s'\n", temp2);
- } else {
- util_strlcat(string, event->program_result, maxsize);
- dbg(event->udev, "substitute result string '%s'\n", event->program_result);
- }
- break;
- case SUBST_ATTR:
- if (attr == NULL)
- err(event->udev, "missing file parameter for attr\n");
- else {
- char *subsys;
- char *sysname;
- char *attrib;
- char value[UTIL_NAME_SIZE] = "";
- size_t size;
-
- if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
- struct udev_device *d;
- const char *val;
-
- if (attrib == NULL)
- break;
- d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
- if (d == NULL)
- break;
- val = udev_device_get_attr_value(d, attrib);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
- udev_device_unref(d);
- }
-
- /* try the current device, other matches may have selected */
- if (value[0]=='\0' && event->dev_parent != NULL && event->dev_parent != event->dev) {
- const char *val;
-
- val = udev_device_get_attr_value(event->dev_parent, attr);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
- }
-
- /* look at all devices along the chain of parents */
- if (value[0]=='\0') {
- struct udev_device *dev_parent = dev;
- const char *val;
-
- do {
- dbg(event->udev, "looking at '%s'\n", udev_device_get_syspath(dev_parent));
- val = udev_device_get_attr_value(dev_parent, attr);
- if (val != NULL) {
- util_strlcpy(value, val, sizeof(value));
- break;
- }
- dev_parent = udev_device_get_parent(dev_parent);
- } while (dev_parent != NULL);
- }
-
- if (value[0]=='\0')
- break;
-
- /* strip trailing whitespace, and replace unwanted characters */
- size = strlen(value);
- while (size > 0 && isspace(value[--size]))
- value[size] = '\0';
- count = util_replace_chars(value, ALLOWED_CHARS_INPUT);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n" , count);
- util_strlcat(string, value, maxsize);
- dbg(event->udev, "substitute sysfs value '%s'\n", value);
- }
- break;
- case SUBST_PARENT:
- {
- struct udev_device *dev_parent;
- const char *devnode;
-
- dev_parent = udev_device_get_parent(event->dev);
- if (dev_parent == NULL)
- break;
- devnode = udev_device_get_devnode(dev_parent);
- if (devnode != NULL) {
- size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
-
- util_strlcat(string, &devnode[devlen], maxsize);
- dbg(event->udev, "found parent '%s', got node name '%s'\n",
- udev_device_get_syspath(dev_parent), &devnode[devlen]);
- }
- }
- break;
- case SUBST_TEMP_NODE:
- if (event->tmp_node[0] == '\0' && major(udev_device_get_devnum(dev)) > 0) {
- dbg(event->udev, "create temporary device node for callout\n");
- snprintf(event->tmp_node, sizeof(event->tmp_node), "%s/.tmp-%u-%u",
- udev_get_dev_path(event->udev),
- major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)));
- udev_node_mknod(dev, event->tmp_node, makedev(0,0), 0600, 0, 0);
- }
- util_strlcat(string, event->tmp_node, maxsize);
- dbg(event->udev, "substitute temporary device node name '%s'\n", event->tmp_node);
- break;
- case SUBST_NAME:
- if (event->name != NULL) {
- util_strlcat(string, event->name, maxsize);
- dbg(event->udev, "substitute name '%s'\n", event->name);
- } else {
- util_strlcat(string, udev_device_get_sysname(dev), maxsize);
- dbg(event->udev, "substitute sysname '%s'\n", udev_device_get_sysname(dev));
- }
- break;
- case SUBST_LINKS:
- {
- struct udev_list_entry *list_entry;
-
- list_entry = udev_device_get_properties_list_entry(dev);
- util_strlcpy(string, udev_list_entry_get_name(list_entry), maxsize);
- udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) {
- util_strlcat(string, " ", maxsize);
- util_strlcat(string, udev_list_entry_get_name(list_entry), maxsize);
- }
- }
- break;
- case SUBST_ROOT:
- util_strlcat(string, udev_get_dev_path(event->udev), maxsize);
- dbg(event->udev, "substitute udev_root '%s'\n", udev_get_dev_path(event->udev));
- break;
- case SUBST_SYS:
- util_strlcat(string, udev_get_sys_path(event->udev), maxsize);
- dbg(event->udev, "substitute sys_path '%s'\n", udev_get_sys_path(event->udev));
- break;
- case SUBST_ENV:
- if (attr == NULL) {
- dbg(event->udev, "missing attribute\n");
- break;
- } else {
- struct udev_list_entry *list_entry;
- const char *value;
-
- list_entry = udev_device_get_properties_list_entry(event->dev);
- list_entry = udev_list_entry_get_by_name(list_entry, attr);
- if (list_entry == NULL)
- break;
- value = udev_list_entry_get_value(list_entry);
- dbg(event->udev, "substitute env '%s=%s'\n", attr, value);
- util_strlcat(string, value, maxsize);
- break;
- }
- default:
- err(event->udev, "unknown substitution type=%i\n", type);
- break;
- }
- /* possibly truncate to format-char specified length */
- if (len >= 0 && len < (int)strlen(head)) {
- head[len] = '\0';
- dbg(event->udev, "truncate to %i chars, subtitution string becomes '%s'\n", len, head);
- }
- util_strlcat(string, temp, maxsize);
- }
-}
-
-static char *key_val(struct udev_rule *rule, struct key *key)
-{
- return rule->buf + key->val_off;
-}
-
-static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
-{
- return rule->buf + pair->key_name_off;
-}
-
-static int match_key(struct udev *udev, const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
-{
- char value[UTIL_PATH_SIZE];
- char *key_value;
- char *pos;
- int match = 0;
-
- if (key->operation != KEY_OP_MATCH &&
- key->operation != KEY_OP_NOMATCH)
- return 0;
-
- if (val == NULL)
- val = "";
-
- /* look for a matching string, parts are separated by '|' */
- util_strlcpy(value, rule->buf + key->val_off, sizeof(value));
- key_value = value;
- dbg(udev, "key %s value='%s'\n", key_name, key_value);
- while (key_value != NULL) {
- pos = strchr(key_value, '|');
- if (pos != NULL) {
- pos[0] = '\0';
- pos = &pos[1];
- }
-
- dbg(udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
- match = (fnmatch(key_value, val, 0) == 0);
- if (match)
- break;
-
- key_value = pos;
- }
-
- if (match && (key->operation == KEY_OP_MATCH)) {
- dbg(udev, "%s is true (matching value)\n", key_name);
- return 0;
- }
- if (!match && (key->operation == KEY_OP_NOMATCH)) {
- dbg(udev, "%s is true (non-matching value)\n", key_name);
- return 0;
- }
- return -1;
-}
-
-/* match a single rule against a given device and possibly its parent devices */
-static int match_rule(struct udev_event *event, struct udev_rule *rule)
-{
- struct udev_device *dev = event->dev;
- int i;
-
- if (match_key(event->udev, "ACTION", rule, &rule->action, udev_device_get_action(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "KERNEL", rule, &rule->kernel, udev_device_get_sysname(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "SUBSYSTEM", rule, &rule->subsystem, udev_device_get_subsystem(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "DEVPATH", rule, &rule->devpath, udev_device_get_devpath(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "DRIVER", rule, &rule->driver, udev_device_get_driver(dev)))
- goto nomatch;
-
- /* match NAME against a value assigned by an earlier rule */
- if (match_key(event->udev, "NAME", rule, &rule->name, event->name))
- goto nomatch;
-
- /* match against current list of symlinks */
- if (rule->symlink_match.operation == KEY_OP_MATCH ||
- rule->symlink_match.operation == KEY_OP_NOMATCH) {
- size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
- struct udev_list_entry *list_entry;
- int match = 0;
-
- udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
- const char *devlink;
-
- devlink = &udev_list_entry_get_name(list_entry)[devlen];
- if (match_key(event->udev, "SYMLINK", rule, &rule->symlink_match, devlink) == 0) {
- match = 1;
- break;
- }
- }
- if (!match)
- goto nomatch;
- }
-
- for (i = 0; i < rule->env.count; i++) {
- struct key_pair *pair = &rule->env.keys[i];
-
- /* we only check for matches, assignments will be handled later */
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- struct udev_list_entry *list_entry;
- const char *key_name = key_pair_name(rule, pair);
- const char *value;
-
- list_entry = udev_device_get_properties_list_entry(event->dev);
- list_entry = udev_list_entry_get_by_name(list_entry, key_name);
- value = udev_list_entry_get_value(list_entry);
- if (value == NULL) {
- dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
- value = "";
- }
- if (match_key(event->udev, "ENV", rule, &pair->key, value))
- goto nomatch;
- }
- }
-
- if (rule->test.operation == KEY_OP_MATCH ||
- rule->test.operation == KEY_OP_NOMATCH) {
- char filename[UTIL_PATH_SIZE];
- char *subsys;
- char *sysname;
- char *attrib;
- struct stat statbuf;
- int match;
-
- util_strlcpy(filename, key_val(rule, &rule->test), sizeof(filename));
- udev_rules_apply_format(event, filename, sizeof(filename));
-
- if (split_subsys_sysname(event->udev, filename, &subsys, &sysname, &attrib) == 0) {
- struct udev_device *d;
- d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
- if (d != NULL) {
- util_strlcpy(filename, udev_device_get_syspath(d), sizeof(filename));
- if (attrib != NULL) {
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, attrib, sizeof(filename));
- }
- udev_device_unref(d);
- }
- } else if (filename[0] != '/') {
- char tmp[UTIL_PATH_SIZE];
-
- util_strlcpy(tmp, udev_device_get_syspath(dev), sizeof(tmp));
- util_strlcat(tmp, "/", sizeof(tmp));
- util_strlcat(tmp, filename, sizeof(tmp));
- util_strlcpy(filename, tmp, sizeof(filename));
- }
-
- attr_subst_subdir(filename, sizeof(filename));
-
- match = (stat(filename, &statbuf) == 0);
- info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
- if (match && rule->test_mode_mask > 0) {
- match = ((statbuf.st_mode & rule->test_mode_mask) > 0);
- info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
- match ? "matches" : "does not match",
- rule->test_mode_mask);
- }
- if (match && rule->test.operation == KEY_OP_NOMATCH)
- goto nomatch;
- if (!match && rule->test.operation == KEY_OP_MATCH)
- goto nomatch;
- dbg(event->udev, "TEST key is true\n");
- }
-
- if (rule->wait_for.operation != KEY_OP_UNSET) {
- char filename[UTIL_PATH_SIZE];
- int found;
-
- util_strlcpy(filename, key_val(rule, &rule->wait_for), sizeof(filename));
- udev_rules_apply_format(event, filename, sizeof(filename));
- found = (wait_for_file(event, filename, 10) == 0);
- if (!found && (rule->wait_for.operation != KEY_OP_NOMATCH))
- goto nomatch;
- }
-
- /* check for matching sysfs attribute pairs */
- for (i = 0; i < rule->attr.count; i++) {
- struct key_pair *pair = &rule->attr.keys[i];
-
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- char attr[UTIL_PATH_SIZE];
- const char *key_name = key_pair_name(rule, pair);
- const char *key_value = key_val(rule, &pair->key);
- char *subsys;
- char *sysname;
- char *attrib;
- char value[UTIL_NAME_SIZE] = "";
- size_t len;
-
- util_strlcpy(attr, key_name, sizeof(attr));
- if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
- struct udev_device *d;
- const char *val;
-
- if (attrib == NULL)
- goto nomatch;
- d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
- if (d == NULL)
- goto nomatch;
- val = udev_device_get_attr_value(d, attrib);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
- udev_device_unref(d);
- }
-
- if (value[0]=='\0') {
- const char *val;
-
- val = udev_device_get_attr_value(dev, key_name);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
- }
-
- if (value[0]=='\0')
- goto nomatch;
-
- /* strip trailing whitespace of value, if not asked to match for it */
- len = strlen(key_value);
- if (len > 0 && !isspace(key_value[len-1])) {
- len = strlen(value);
- while (len > 0 && isspace(value[--len]))
- value[len] = '\0';
- dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
- }
-
- if (match_key(event->udev, "ATTR", rule, &pair->key, value))
- goto nomatch;
- }
- }
-
- /* walk up the chain of parent devices and find a match */
- event->dev_parent = dev;
- while (1) {
- /* check for matching kernel device name */
- if (match_key(event->udev, "KERNELS", rule,
- &rule->kernels, udev_device_get_sysname(event->dev_parent)))
- goto try_parent;
-
- /* check for matching subsystem value */
- if (match_key(event->udev, "SUBSYSTEMS", rule,
- &rule->subsystems, udev_device_get_subsystem(event->dev_parent)))
- goto try_parent;
-
- /* check for matching driver */
- if (match_key(event->udev, "DRIVERS", rule,
- &rule->drivers, udev_device_get_driver(event->dev_parent)))
- goto try_parent;
-
- /* check for matching sysfs attribute pairs */
- for (i = 0; i < rule->attrs.count; i++) {
- struct key_pair *pair = &rule->attrs.keys[i];
-
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- const char *key_name = key_pair_name(rule, pair);
- const char *key_value = key_val(rule, &pair->key);
- const char *val;
- char value[UTIL_NAME_SIZE];
- size_t len;
-
- val = udev_device_get_attr_value(event->dev_parent, key_name);
- if (val == NULL)
- val = udev_device_get_attr_value(dev, key_name);
- if (val == NULL)
- goto try_parent;
- util_strlcpy(value, val, sizeof(value));
-
- /* strip trailing whitespace of value, if not asked to match for it */
- len = strlen(key_value);
- if (len > 0 && !isspace(key_value[len-1])) {
- len = strlen(value);
- while (len > 0 && isspace(value[--len]))
- value[len] = '\0';
- dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
- }
-
- if (match_key(event->udev, "ATTRS", rule, &pair->key, value))
- goto try_parent;
- }
- }
-
- /* found matching device */
- break;
-try_parent:
- /* move to parent device */
- dbg(event->udev, "try parent sysfs device\n");
- event->dev_parent = udev_device_get_parent(event->dev_parent);
- if (event->dev_parent == NULL)
- goto nomatch;
- dbg(event->udev, "looking at dev_parent->devpath='%s'\n",
- udev_device_get_syspath(event->dev_parent));
- }
-
- /* execute external program */
- if (rule->program.operation != KEY_OP_UNSET) {
- char program[UTIL_PATH_SIZE];
- char result[UTIL_PATH_SIZE];
-
- util_strlcpy(program, key_val(rule, &rule->program), sizeof(program));
- udev_rules_apply_format(event, program, sizeof(program));
- if (run_program(event->dev, program, result, sizeof(result), NULL) != 0) {
- dbg(event->udev, "PROGRAM is false\n");
- event->program_result[0] = '\0';
- if (rule->program.operation != KEY_OP_NOMATCH)
- goto nomatch;
- } else {
- int count;
-
- dbg(event->udev, "PROGRAM matches\n");
- util_remove_trailing_chars(result, '\n');
- if (rule->string_escape == ESCAPE_UNSET ||
- rule->string_escape == ESCAPE_REPLACE) {
- count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n" , count);
- }
- dbg(event->udev, "result is '%s'\n", result);
- util_strlcpy(event->program_result, result, sizeof(event->program_result));
- dbg(event->udev, "PROGRAM returned successful\n");
- if (rule->program.operation == KEY_OP_NOMATCH)
- goto nomatch;
- }
- dbg(event->udev, "PROGRAM key is true\n");
- }
-
- /* check for matching result of external program */
- if (match_key(event->udev, "RESULT", rule, &rule->result, event->program_result))
- goto nomatch;
-
- /* import variables returned from program or or file into environment */
- if (rule->import.operation != KEY_OP_UNSET) {
- char import[UTIL_PATH_SIZE];
- int rc = -1;
-
- util_strlcpy(import, key_val(rule, &rule->import), sizeof(import));
- udev_rules_apply_format(event, import, sizeof(import));
- dbg(event->udev, "check for IMPORT import='%s'\n", import);
- if (rule->import_type == IMPORT_PROGRAM) {
- rc = import_program_into_env(event, import);
- } else if (rule->import_type == IMPORT_FILE) {
- dbg(event->udev, "import file import='%s'\n", import);
- rc = import_file_into_env(event, import);
- } else if (rule->import_type == IMPORT_PARENT) {
- dbg(event->udev, "import parent import='%s'\n", import);
- rc = import_parent_into_env(event, import);
- }
- if (rc != 0) {
- dbg(event->udev, "IMPORT failed\n");
- if (rule->import.operation != KEY_OP_NOMATCH)
- goto nomatch;
- } else
- dbg(event->udev, "IMPORT '%s' imported\n", key_val(rule, &rule->import));
- dbg(event->udev, "IMPORT key is true\n");
- }
-
- /* rule matches, if we have ENV assignments export it */
- for (i = 0; i < rule->env.count; i++) {
- struct key_pair *pair = &rule->env.keys[i];
-
- if (pair->key.operation == KEY_OP_ASSIGN) {
- char temp_value[UTIL_NAME_SIZE];
- const char *key_name = key_pair_name(rule, pair);
- const char *value = key_val(rule, &pair->key);
-
- /* make sure we don't write to the same string we possibly read from */
- util_strlcpy(temp_value, value, sizeof(temp_value));
- udev_rules_apply_format(event, temp_value, sizeof(temp_value));
-
- if (temp_value[0] != '\0') {
- struct udev_list_entry *entry;
-
- info(event->udev, "set ENV '%s=%s'\n", key_name, temp_value);
- entry = udev_device_add_property(dev, key_name, temp_value);
- /* store in db */
- udev_list_entry_set_flag(entry, 1);
- }
- }
- }
-
- /* if we have ATTR assignments, write value to sysfs file */
- for (i = 0; i < rule->attr.count; i++) {
- struct key_pair *pair = &rule->attr.keys[i];
-
- if (pair->key.operation == KEY_OP_ASSIGN) {
- const char *key_name = key_pair_name(rule, pair);
- char *subsys;
- char *sysname;
- char *attrib;
- char attr[UTIL_PATH_SIZE];
- char value[UTIL_NAME_SIZE];
- FILE *f;
-
- util_strlcpy(attr, key_name, sizeof(attr));
- if (split_subsys_sysname(event->udev, attr, &subsys, &sysname, &attrib) == 0) {
- struct udev_device *d;
-
- d = udev_device_new_from_subsystem_sysname(event->udev, subsys, sysname);
- if (d != NULL) {
- util_strlcpy(attr, udev_device_get_syspath(d), sizeof(attr));
- if (attrib != NULL) {
- util_strlcat(attr, "/", sizeof(attr));
- util_strlcat(attr, attrib, sizeof(attr));
- }
- udev_device_unref(d);
- }
- } else {
- util_strlcpy(attr, udev_device_get_syspath(dev), sizeof(attr));
- util_strlcat(attr, "/", sizeof(attr));
- util_strlcat(attr, key_name, sizeof(attr));
- }
-
- attr_subst_subdir(attr, sizeof(attr));
-
- util_strlcpy(value, key_val(rule, &pair->key), sizeof(value));
- udev_rules_apply_format(event, value, sizeof(value));
- info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
- f = fopen(attr, "w");
- if (f != NULL) {
- if (!event->test)
- if (fprintf(f, "%s", value) <= 0)
- err(event->udev, "error writing ATTR{%s}: %m\n", attr);
- fclose(f);
- } else
- err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
- }
- }
- return 0;
-
-nomatch:
- return -1;
-}
-
-int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event)
-{
- struct udev_device *dev = event->dev;
- struct udev_rules_iter iter;
- struct udev_rule *rule;
- int name_set = 0;
-
- dbg(event->udev, "device: '%s'\n", udev_device_get_syspath(dev));
-
- /* look for a matching rule to apply */
- udev_rules_iter_init(&iter, rules);
- while (1) {
- rule = udev_rules_iter_next(&iter);
- if (rule == NULL)
- break;
-
- if (name_set &&
- (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD)) {
- dbg(event->udev, "node name already set, rule ignored\n");
- continue;
- }
-
- dbg(event->udev, "process rule\n");
- if (match_rule(event, rule) == 0) {
- /* apply options */
- if (rule->ignore_device) {
- info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
- event->ignore_device = 1;
- return 0;
- }
- if (rule->ignore_remove) {
- udev_device_set_ignore_remove(dev, 1);
- dbg(event->udev, "remove event should be ignored\n");
- }
- if (rule->link_priority != 0) {
- udev_device_set_devlink_priority(dev, rule->link_priority);
- info(event->udev, "devlink_priority=%i\n", rule->link_priority);
- }
- if (rule->event_timeout >= 0) {
- udev_device_set_event_timeout(dev, rule->event_timeout);
- info(event->udev, "event_timeout=%i\n", rule->event_timeout);
- }
- /* apply all_partitions option only at a disk device */
- if (rule->partitions > 0 &&
- strcmp(udev_device_get_subsystem(dev), "block") == 0 &&
- udev_device_get_sysnum(dev) == NULL) {
- udev_device_set_num_fake_partitions(dev, rule->partitions);
- dbg(event->udev, "creation of partition nodes requested\n");
- }
-
- /* apply permissions */
- if (!event->mode_final && rule->mode.operation != KEY_OP_UNSET) {
- if (rule->mode.operation == KEY_OP_ASSIGN_FINAL)
- event->mode_final = 1;
- char buf[20];
- util_strlcpy(buf, key_val(rule, &rule->mode), sizeof(buf));
- udev_rules_apply_format(event, buf, sizeof(buf));
- event->mode = strtol(buf, NULL, 8);
- dbg(event->udev, "applied mode=%#o to '%s'\n",
- event->mode, udev_device_get_sysname(dev));
- }
- if (!event->owner_final && rule->owner.operation != KEY_OP_UNSET) {
- if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
- event->owner_final = 1;
- util_strlcpy(event->owner, key_val(rule, &rule->owner), sizeof(event->owner));
- udev_rules_apply_format(event, event->owner, sizeof(event->owner));
- dbg(event->udev, "applied owner='%s' to '%s'\n",
- event->owner, udev_device_get_sysname(dev));
- }
- if (!event->group_final && rule->group.operation != KEY_OP_UNSET) {
- if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
- event->group_final = 1;
- util_strlcpy(event->group, key_val(rule, &rule->group), sizeof(event->group));
- udev_rules_apply_format(event, event->group, sizeof(event->group));
- dbg(event->udev, "applied group='%s' to '%s'\n",
- event->group, udev_device_get_sysname(dev));
- }
-
- /* collect symlinks */
- if (!event->devlink_final &&
- (rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
- rule->symlink.operation == KEY_OP_ADD)) {
- char temp[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE];
- char *pos, *next;
- int count = 0;
-
- if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
- event->devlink_final = 1;
- if (rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset symlink list\n");
- udev_device_cleanup_devlinks_list(dev);
- }
- /* allow multiple symlinks separated by spaces */
- util_strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
- udev_rules_apply_format(event, temp, sizeof(temp));
- if (rule->string_escape == ESCAPE_UNSET)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
- else if (rule->string_escape == ESCAPE_REPLACE)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n" , count);
- dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
- pos = temp;
- while (isspace(pos[0]))
- pos++;
- next = strchr(pos, ' ');
- while (next) {
- next[0] = '\0';
- info(event->udev, "add symlink '%s'\n", pos);
- util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, pos, sizeof(filename));
- udev_device_add_devlink(dev, filename);
- while (isspace(next[1]))
- next++;
- pos = &next[1];
- next = strchr(pos, ' ');
- }
- if (pos[0] != '\0') {
- info(event->udev, "add symlink '%s'\n", pos);
- util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, pos, sizeof(filename));
- udev_device_add_devlink(dev, filename);
- }
- }
-
- /* set name, later rules with name set will be ignored */
- if (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD) {
- int count;
-
- name_set = 1;
- util_strlcpy(event->name, key_val(rule, &rule->name), sizeof(event->name));
- udev_rules_apply_format(event, event->name, sizeof(event->name));
- if (rule->string_escape == ESCAPE_UNSET ||
- rule->string_escape == ESCAPE_REPLACE) {
- count = util_replace_chars(event->name, ALLOWED_CHARS_FILE);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n", count);
- }
-
- info(event->udev, "rule applied, '%s' becomes '%s'\n",
- udev_device_get_sysname(dev), event->name);
- if (strcmp(udev_device_get_subsystem(dev), "net") != 0)
- dbg(event->udev, "'%s' owner='%s', group='%s', mode=%#o partitions=%i\n",
- event->name, event->owner, event->group, event->mode,
- udev_device_get_num_fake_partitions(dev));
- }
-
- if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
- struct udev_list_entry *list_entry;
-
- if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
- event->run_final = 1;
- if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset run list\n");
- udev_list_cleanup(event->udev, &event->run_list);
- }
- dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
- list_entry = udev_list_entry_add(event->udev, &event->run_list,
- key_val(rule, &rule->run), NULL, 1, 0);
- if (rule->run_ignore_error && list_entry != NULL)
- udev_list_entry_set_flag(list_entry, 1);
- }
-
- if (rule->last_rule) {
- dbg(event->udev, "last rule to be applied\n");
- break;
- }
-
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
- udev_rules_iter_goto(&iter, rule->goto_rule_off);
- }
- }
- }
-
- if (!name_set) {
- info(event->udev, "no node name set, will use kernel name '%s'\n",
- udev_device_get_sysname(dev));
- util_strlcpy(event->name, udev_device_get_sysname(dev), sizeof(event->name));
- }
-
- if (event->tmp_node[0] != '\0') {
- dbg(event->udev, "removing temporary device node\n");
- unlink_secure(event->udev, event->tmp_node);
- event->tmp_node[0] = '\0';
- }
- return 0;
-}
-
-int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event)
-{
- struct udev_device *dev = event->dev;
- struct udev_rules_iter iter;
- struct udev_rule *rule;
-
- dbg(event->udev, "sysname: '%s'\n", udev_device_get_sysname(dev));
-
- /* look for a matching rule to apply */
- udev_rules_iter_init(&iter, rules);
- while (1) {
- rule = udev_rules_iter_next(&iter);
- if (rule == NULL)
- break;
-
- dbg(event->udev, "process rule\n");
- if (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD ||
- rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
- rule->symlink.operation == KEY_OP_ADD ||
- rule->mode.operation != KEY_OP_UNSET ||
- rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
- dbg(event->udev, "skip rule that names a device\n");
- continue;
- }
-
- if (match_rule(event, rule) == 0) {
- if (rule->ignore_device) {
- info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
- event->ignore_device = 1;
- return 0;
- }
- if (rule->ignore_remove) {
- udev_device_set_ignore_remove(dev, 1);
- dbg(event->udev, "remove event should be ignored\n");
- }
-
- if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
- struct udev_list_entry *list_entry;
-
- if (rule->run.operation == KEY_OP_ASSIGN ||
- rule->run.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset run list\n");
- udev_list_cleanup(event->udev, &event->run_list);
- }
- dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
- list_entry = udev_list_entry_add(event->udev, &event->run_list,
- key_val(rule, &rule->run), NULL, 1, 0);
- if (rule->run_ignore_error && list_entry != NULL)
- udev_list_entry_set_flag(list_entry, 1);
- if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
- break;
- }
-
- if (rule->last_rule) {
- dbg(event->udev, "last rule to be applied\n");
- break;
- }
-
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
- udev_rules_iter_goto(&iter, rule->goto_rule_off);
- }
- }
- }
-
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef UDEV_RULES_H
-#define UDEV_RULES_H
-
-#include "udev.h"
-
-#define PAIRS_MAX 5
-
-enum key_operation {
- KEY_OP_UNSET,
- KEY_OP_MATCH,
- KEY_OP_NOMATCH,
- KEY_OP_ADD,
- KEY_OP_ASSIGN,
- KEY_OP_ASSIGN_FINAL,
-};
-
-struct key {
- enum key_operation operation;
- size_t val_off;
-};
-
-struct key_pair {
- struct key key;
- size_t key_name_off;
-};
-
-struct key_pairs {
- int count;
- struct key_pair keys[PAIRS_MAX];
-};
-
-enum import_type {
- IMPORT_UNSET,
- IMPORT_PROGRAM,
- IMPORT_FILE,
- IMPORT_PARENT,
-};
-
-enum escape_type {
- ESCAPE_UNSET,
- ESCAPE_NONE,
- ESCAPE_REPLACE,
-};
-
-struct udev_rule {
- struct key action;
- struct key devpath;
- struct key kernel;
- struct key subsystem;
- struct key driver;
- struct key_pairs attr;
-
- struct key kernels;
- struct key subsystems;
- struct key drivers;
- struct key_pairs attrs;
-
- struct key_pairs env;
- struct key program;
- struct key result;
- struct key import;
- enum import_type import_type;
- struct key test;
- mode_t test_mode_mask;
- struct key run;
- struct key wait_for;
- struct key label;
- struct key goto_label;
- size_t goto_rule_off;
-
- struct key name;
- struct key symlink;
- struct key symlink_match;
- struct key owner;
- struct key group;
- struct key mode;
- enum escape_type string_escape;
-
- unsigned int link_priority;
- int event_timeout;
- unsigned int partitions;
- unsigned int last_rule:1,
- run_ignore_error:1,
- ignore_device:1,
- ignore_remove:1;
-
- size_t bufsize;
- char buf[];
-};
-
-struct udev_rules {
- struct udev *udev;
- char *buf;
- size_t bufsize;
- int resolve_names;
-};
-
-struct udev_rules_iter {
- struct udev_rules *rules;
- size_t current;
-};
-
-extern int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names);
-extern void udev_rules_cleanup(struct udev_rules *rules);
-
-extern void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules);
-extern struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter);
-extern struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off);
-
-extern int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event);
-extern int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event);
-extern int udev_rules_run(struct udev_event *event);
-
-extern void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize);
-
-#endif
+++ /dev/null
-/*
- * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <errno.h>
-
-#include "udev.h"
-#include "udev_rules.h"
-
-
-void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules)
-{
- dbg(rules->udev, "bufsize=%zi\n", rules->bufsize);
- iter->rules = rules;
- iter->current = 0;
-}
-
-struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter)
-{
- struct udev_rules *rules;
- struct udev_rule *rule;
-
- rules = iter->rules;
- if (!rules)
- return NULL;
-
- dbg(rules->udev, "current=%zi\n", iter->current);
- if (iter->current >= rules->bufsize) {
- dbg(rules->udev, "no more rules\n");
- return NULL;
- }
-
- /* get next rule */
- rule = (struct udev_rule *) (rules->buf + iter->current);
- iter->current += sizeof(struct udev_rule) + rule->bufsize;
-
- return rule;
-}
-
-struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off)
-{
- struct udev_rules *rules = iter->rules;
- struct udev_rule *rule;
-
- dbg(rules->udev, "current=%zi\n", iter->current);
- iter->current = rule_off;
- rule = (struct udev_rule *) (rules->buf + iter->current);
-
- return rule;
-}
-
-static size_t find_label(const struct udev_rules_iter *iter, const char *label)
-{
- struct udev_rule *rule;
- struct udev_rules *rules = iter->rules;
- size_t current = iter->current;
-
-next:
- dbg(rules->udev, "current=%zi\n", current);
- if (current >= rules->bufsize) {
- dbg(rules->udev, "LABEL='%s' not found\n", label);
- return 0;
- }
- rule = (struct udev_rule *) (rules->buf + current);
-
- if (strcmp(&rule->buf[rule->label.val_off], label) != 0) {
- dbg(rules->udev, "moving forward, looking for label '%s'\n", label);
- current += sizeof(struct udev_rule) + rule->bufsize;
- goto next;
- }
-
- dbg(rules->udev, "found label '%s'\n", label);
- return current;
-}
-
-static int get_key(struct udev_rules *rules, char **line, char **key, enum key_operation *operation, char **value)
-{
- char *linepos;
- char *temp;
-
- linepos = *line;
- if (linepos == NULL && linepos[0] == '\0')
- return -1;
-
- /* skip whitespace */
- while (isspace(linepos[0]) || linepos[0] == ',')
- linepos++;
-
- /* get the key */
- if (linepos[0] == '\0')
- return -1;
- *key = linepos;
-
- while (1) {
- linepos++;
- if (linepos[0] == '\0')
- return -1;
- if (isspace(linepos[0]))
- break;
- if (linepos[0] == '=')
- break;
- if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
- if (linepos[1] == '=')
- break;
- }
-
- /* remember end of key */
- temp = linepos;
-
- /* skip whitespace after key */
- while (isspace(linepos[0]))
- linepos++;
- if (linepos[0] == '\0')
- return -1;
-
- /* get operation type */
- if (linepos[0] == '=' && linepos[1] == '=') {
- *operation = KEY_OP_MATCH;
- linepos += 2;
- dbg(rules->udev, "operator=match\n");
- } else if (linepos[0] == '!' && linepos[1] == '=') {
- *operation = KEY_OP_NOMATCH;
- linepos += 2;
- dbg(rules->udev, "operator=nomatch\n");
- } else if (linepos[0] == '+' && linepos[1] == '=') {
- *operation = KEY_OP_ADD;
- linepos += 2;
- dbg(rules->udev, "operator=add\n");
- } else if (linepos[0] == '=') {
- *operation = KEY_OP_ASSIGN;
- linepos++;
- dbg(rules->udev, "operator=assign\n");
- } else if (linepos[0] == ':' && linepos[1] == '=') {
- *operation = KEY_OP_ASSIGN_FINAL;
- linepos += 2;
- dbg(rules->udev, "operator=assign_final\n");
- } else
- return -1;
-
- /* terminate key */
- temp[0] = '\0';
- dbg(rules->udev, "key='%s'\n", *key);
-
- /* skip whitespace after operator */
- while (isspace(linepos[0]))
- linepos++;
- if (linepos[0] == '\0')
- return -1;
-
- /* get the value*/
- if (linepos[0] == '"')
- linepos++;
- else
- return -1;
- *value = linepos;
-
- temp = strchr(linepos, '"');
- if (!temp)
- return -1;
- temp[0] = '\0';
- temp++;
- dbg(rules->udev, "value='%s'\n", *value);
-
- /* move line to next key */
- *line = temp;
-
- return 0;
-}
-
-/* extract possible KEY{attr} */
-static char *get_key_attribute(struct udev_rules *rules, char *str)
-{
- char *pos;
- char *attr;
-
- attr = strchr(str, '{');
- if (attr != NULL) {
- attr++;
- pos = strchr(attr, '}');
- if (pos == NULL) {
- err(rules->udev, "missing closing brace for format\n");
- return NULL;
- }
- pos[0] = '\0';
- dbg(rules->udev, "attribute='%s'\n", attr);
- return attr;
- }
-
- return NULL;
-}
-
-static int add_rule_key(struct udev_rule *rule, struct key *key,
- enum key_operation operation, const char *value)
-{
- size_t val_len = strnlen(value, UTIL_PATH_SIZE);
-
- key->operation = operation;
-
- key->val_off = rule->bufsize;
- util_strlcpy(rule->buf + rule->bufsize, value, val_len+1);
- rule->bufsize += val_len+1;
-
- return 0;
-}
-
-static int add_rule_key_pair(struct udev_rules *rules, struct udev_rule *rule, struct key_pairs *pairs,
- enum key_operation operation, const char *key, const char *value)
-{
- size_t key_len = strnlen(key, UTIL_PATH_SIZE);
-
- if (pairs->count >= PAIRS_MAX) {
- err(rules->udev, "skip, too many keys of the same type in a single rule\n");
- return -1;
- }
-
- add_rule_key(rule, &pairs->keys[pairs->count].key, operation, value);
-
- /* add the key-name of the pair */
- pairs->keys[pairs->count].key_name_off = rule->bufsize;
- util_strlcpy(rule->buf + rule->bufsize, key, key_len+1);
- rule->bufsize += key_len+1;
-
- pairs->count++;
-
- return 0;
-}
-
-static int add_to_rules(struct udev_rules *rules, char *line, const char *filename, unsigned int lineno)
-{
- char buf[sizeof(struct udev_rule) + UTIL_LINE_SIZE];
- struct udev_rule *rule;
- size_t rule_size;
- int valid;
- char *linepos;
- char *attr;
- size_t padding;
- int physdev = 0;
- int retval;
-
- memset(buf, 0x00, sizeof(buf));
- rule = (struct udev_rule *) buf;
- rule->event_timeout = -1;
- linepos = line;
- valid = 0;
-
- /* get all the keys */
- while (1) {
- char *key;
- char *value;
- enum key_operation operation = KEY_OP_UNSET;
-
- retval = get_key(rules, &linepos, &key, &operation, &value);
- if (retval)
- break;
-
- if (strcasecmp(key, "ACTION") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid ACTION operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->action, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DEVPATH") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DEVPATH operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->devpath, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "KERNEL") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid KERNEL operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->kernel, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "SUBSYSTEM") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid SUBSYSTEM operation\n");
- goto invalid;
- }
- /* bus, class, subsystem events should all be the same */
- if (strcmp(value, "subsystem") == 0 ||
- strcmp(value, "bus") == 0 ||
- strcmp(value, "class") == 0) {
- if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
- err(rules->udev, "'%s' must be specified as 'subsystem' \n"
- "please fix it in %s:%u", value, filename, lineno);
- add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
- } else
- add_rule_key(rule, &rule->subsystem, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DRIVER") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DRIVER operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->driver, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("ATTR")-1);
- if (attr == NULL) {
- err(rules->udev, "error parsing ATTR attribute\n");
- goto invalid;
- }
- if (add_rule_key_pair(rules, rule, &rule->attr, operation, attr, value) != 0)
- goto invalid;
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "KERNELS") == 0 ||
- strcasecmp(key, "ID") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid KERNELS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->kernels, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
- strcasecmp(key, "BUS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid SUBSYSTEMS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->subsystems, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DRIVERS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DRIVERS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->drivers, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
- strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid ATTRS operation\n");
- goto invalid;
- }
- attr = get_key_attribute(rules, key + sizeof("ATTRS")-1);
- if (attr == NULL) {
- err(rules->udev, "error parsing ATTRS attribute\n");
- goto invalid;
- }
- if (strncmp(attr, "device/", 7) == 0)
- err(rules->udev, "the 'device' link is deprecated and will be removed from a future kernel, \n"
- "please fix it in %s:%u", filename, lineno);
- else if (strstr(attr, "../") != NULL)
- err(rules->udev, "do not reference parent sysfs directories directly, that may break with a future kernel, \n"
- "please fix it in %s:%u", filename, lineno);
- if (add_rule_key_pair(rules, rule, &rule->attrs, operation, attr, value) != 0)
- goto invalid;
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("ENV")-1);
- if (attr == NULL) {
- err(rules->udev, "error parsing ENV attribute\n");
- goto invalid;
- }
- if (strncmp(attr, "PHYSDEV", 7) == 0)
- physdev = 1;
- if (add_rule_key_pair(rules, rule, &rule->env, operation, attr, value) != 0)
- goto invalid;
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "PROGRAM") == 0) {
- add_rule_key(rule, &rule->program, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "RESULT") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid RESULT operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->result, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("IMPORT")-1);
- if (attr != NULL && strstr(attr, "program")) {
- dbg(rules->udev, "IMPORT will be executed\n");
- rule->import_type = IMPORT_PROGRAM;
- } else if (attr != NULL && strstr(attr, "file")) {
- dbg(rules->udev, "IMPORT will be included as file\n");
- rule->import_type = IMPORT_FILE;
- } else if (attr != NULL && strstr(attr, "parent")) {
- dbg(rules->udev, "IMPORT will include the parent values\n");
- rule->import_type = IMPORT_PARENT;
- } else {
- /* figure it out if it is executable */
- char file[UTIL_PATH_SIZE];
- char *pos;
- struct stat statbuf;
-
- util_strlcpy(file, value, sizeof(file));
- pos = strchr(file, ' ');
- if (pos)
- pos[0] = '\0';
-
- /* allow programs in /lib/udev called without the path */
- if (strchr(file, '/') == NULL) {
- util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
- util_strlcat(file, value, sizeof(file));
- pos = strchr(file, ' ');
- if (pos)
- pos[0] = '\0';
- }
-
- dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
- if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
- dbg(rules->udev, "IMPORT is executable, will be executed (autotype)\n");
- rule->import_type = IMPORT_PROGRAM;
- } else {
- dbg(rules->udev, "IMPORT is not executable, will be included as file (autotype)\n");
- rule->import_type = IMPORT_FILE;
- }
- }
- add_rule_key(rule, &rule->import, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid TEST operation\n");
- goto invalid;
- }
- attr = get_key_attribute(rules, key + sizeof("TEST")-1);
- if (attr != NULL)
- rule->test_mode_mask = strtol(attr, NULL, 8);
- add_rule_key(rule, &rule->test, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("RUN")-1);
- if (attr != NULL) {
- if (strstr(attr, "ignore_error"))
- rule->run_ignore_error = 1;
- }
- add_rule_key(rule, &rule->run, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
- add_rule_key(rule, &rule->wait_for, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "LABEL") == 0) {
- add_rule_key(rule, &rule->label, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "GOTO") == 0) {
- add_rule_key(rule, &rule->goto_label, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("NAME")-1);
- if (attr != NULL) {
- if (strstr(attr, "all_partitions") != NULL) {
- dbg(rules->udev, "creation of partition nodes requested\n");
- rule->partitions = DEFAULT_PARTITIONS_COUNT;
- }
- if (strstr(attr, "ignore_remove") != NULL) {
- dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
- }
- }
- if (value[0] == '\0')
- dbg(rules->udev, "name empty, node creation supressed\n");
- add_rule_key(rule, &rule->name, operation, value);
- continue;
- }
-
- if (strcasecmp(key, "SYMLINK") == 0) {
- if (operation == KEY_OP_MATCH ||
- operation == KEY_OP_NOMATCH)
- add_rule_key(rule, &rule->symlink_match, operation, value);
- else
- add_rule_key(rule, &rule->symlink, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "OWNER") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char owner[32];
- uid_t uid = lookup_user(rules->udev, value);
- dbg(rules->udev, "replacing username='%s' by id=%i\n", value, uid);
- sprintf(owner, "%u", (unsigned int) uid);
- add_rule_key(rule, &rule->owner, operation, owner);
- continue;
- }
- }
-
- add_rule_key(rule, &rule->owner, operation, value);
- continue;
- }
-
- if (strcasecmp(key, "GROUP") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char group[32];
- gid_t gid = lookup_group(rules->udev, value);
- dbg(rules->udev, "replacing groupname='%s' by id=%i\n", value, gid);
- sprintf(group, "%u", (unsigned int) gid);
- add_rule_key(rule, &rule->group, operation, group);
- continue;
- }
- }
-
- add_rule_key(rule, &rule->group, operation, value);
- continue;
- }
-
- if (strcasecmp(key, "MODE") == 0) {
- add_rule_key(rule, &rule->mode, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "OPTIONS") == 0) {
- const char *pos;
-
- if (strstr(value, "last_rule") != NULL) {
- dbg(rules->udev, "last rule to be applied\n");
- rule->last_rule = 1;
- }
- if (strstr(value, "ignore_device") != NULL) {
- dbg(rules->udev, "device should be ignored\n");
- rule->ignore_device = 1;
- }
- if (strstr(value, "ignore_remove") != NULL) {
- dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
- }
- pos = strstr(value, "link_priority=");
- if (pos != NULL) {
- rule->link_priority = atoi(&pos[strlen("link_priority=")]);
- dbg(rules->udev, "link priority=%i\n", rule->link_priority);
- }
- pos = strstr(value, "event_timeout=");
- if (pos != NULL) {
- rule->event_timeout = atoi(&pos[strlen("event_timeout=")]);
- dbg(rules->udev, "event timout=%i\n", rule->event_timeout);
- }
- pos = strstr(value, "string_escape=");
- if (pos != NULL) {
- pos = &pos[strlen("string_escape=")];
- if (strncmp(pos, "none", strlen("none")) == 0)
- rule->string_escape = ESCAPE_NONE;
- else if (strncmp(pos, "replace", strlen("replace")) == 0)
- rule->string_escape = ESCAPE_REPLACE;
- }
- if (strstr(value, "all_partitions") != NULL) {
- dbg(rules->udev, "creation of partition nodes requested\n");
- rule->partitions = DEFAULT_PARTITIONS_COUNT;
- }
- valid = 1;
- continue;
- }
-
- err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
- }
-
- if (physdev && rule->wait_for.operation == KEY_OP_UNSET)
- err(rules->udev, "PHYSDEV* values are deprecated and will be removed from a future kernel, \n"
- "please fix it in %s:%u", filename, lineno);
-
- /* skip line if not any valid key was found */
- if (!valid)
- goto invalid;
-
- /* grow buffer and add rule */
- rule_size = sizeof(struct udev_rule) + rule->bufsize;
- padding = (sizeof(size_t) - rule_size % sizeof(size_t)) % sizeof(size_t);
- dbg(rules->udev, "add %zi padding bytes\n", padding);
- rule_size += padding;
- rule->bufsize += padding;
-
- rules->buf = realloc(rules->buf, rules->bufsize + rule_size);
- if (!rules->buf) {
- err(rules->udev, "realloc failed\n");
- goto exit;
- }
- dbg(rules->udev, "adding rule to offset %zi\n", rules->bufsize);
- memcpy(rules->buf + rules->bufsize, rule, rule_size);
- rules->bufsize += rule_size;
-exit:
- return 0;
-
-invalid:
- err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
- return -1;
-}
-
-static int parse_file(struct udev_rules *rules, const char *filename)
-{
- char line[UTIL_LINE_SIZE];
- char *bufline;
- unsigned int lineno;
- char *buf;
- size_t bufsize;
- size_t cur;
- size_t count;
- int retval = 0;
- size_t start;
- struct udev_rule *rule;
- struct udev_rules_iter iter;
-
- start = rules->bufsize;
-
- if (file_map(filename, &buf, &bufsize) != 0) {
- err(rules->udev, "can't open '%s' as rules file: %m\n", filename);
- return -1;
- }
- info(rules->udev, "reading '%s' as rules file\n", filename);
-
- /* loop through the whole file */
- cur = 0;
- lineno = 0;
- while (cur < bufsize) {
- unsigned int i, j;
-
- count = buf_get_line(buf, bufsize, cur);
- bufline = &buf[cur];
- cur += count+1;
- lineno++;
-
- /* eat the whitespace */
- while ((count > 0) && isspace(bufline[0])) {
- bufline++;
- count--;
- }
- if (count == 0)
- continue;
-
- /* see if this is a comment */
- if (bufline[0] == '#')
- continue;
-
- if (count >= sizeof(line)) {
- err(rules->udev, "line too long, rule skipped '%s:%u'\n", filename, lineno);
- continue;
- }
-
- /* skip backslash and newline from multiline rules */
- for (i = j = 0; i < count; i++) {
- if (bufline[i] == '\\' && bufline[i+1] == '\n')
- continue;
-
- line[j++] = bufline[i];
- }
- line[j] = '\0';
-
- dbg(rules->udev, "read '%s'\n", line);
- add_to_rules(rules, line, filename, lineno);
- }
-
- /* Compute all goto targets within this file */
- udev_rules_iter_init(&iter, rules);
- udev_rules_iter_goto(&iter, start);
- while((rule = udev_rules_iter_next(&iter))) {
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- char *goto_label = &rule->buf[rule->goto_label.val_off];
-
- dbg(rules->udev, "resolving goto label '%s'\n", goto_label);
- rule->goto_rule_off = find_label(&iter, goto_label);
- if (rule->goto_rule_off == 0) {
- err(rules->udev, "ignore goto to nonexistent label '%s' in '%s'\n",
- goto_label, filename);
- rule->goto_rule_off = iter.current;
- }
- }
- }
-
- file_unmap(buf, bufsize);
- return retval;
-}
-
-int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names)
-{
- struct stat statbuf;
- char filename[PATH_MAX];
- LIST_HEAD(name_list);
- LIST_HEAD(sort_list);
- struct name_entry *name_loop, *name_tmp;
- struct name_entry *sort_loop, *sort_tmp;
- int retval = 0;
-
- memset(rules, 0x00, sizeof(struct udev_rules));
- rules->udev = udev;
- rules->resolve_names = resolve_names;
-
- if (udev_get_rules_path(udev) != NULL) {
- /* custom rules location for testing */
- add_matching_files(udev, &name_list, udev_get_rules_path(udev), ".rules");
- } else {
- /* read user/custom rules */
- add_matching_files(udev, &name_list, SYSCONFDIR "/udev/rules.d", ".rules");
-
- /* read dynamic/temporary rules */
- util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
- util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
- if (stat(filename, &statbuf) != 0) {
- create_path(udev, filename);
- udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
- mkdir(filename, 0755);
- udev_selinux_resetfscreatecon(udev);
- }
- add_matching_files(udev, &sort_list, filename, ".rules");
-
- /* read default rules */
- add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
-
- /* sort all rules files by basename into list of files */
- list_for_each_entry_safe(sort_loop, sort_tmp, &sort_list, node) {
- const char *sort_base = strrchr(sort_loop->name, '/');
-
- if (sort_base == NULL)
- continue;
-
- list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
- const char *name_base = strrchr(name_loop->name, '/');
-
- if (name_base == NULL)
- continue;
-
- if (strcmp(name_base, sort_base) == 0) {
- info(udev, "rule file '%s' already added, ignoring '%s'\n",
- name_loop->name, sort_loop->name);
- list_del(&sort_loop->node);
- free(sort_loop);
- sort_loop = NULL;
- continue;
- }
-
- if (strcmp(name_base, sort_base) > 0)
- break;
- }
- if (sort_loop != NULL)
- list_move_tail(&sort_loop->node, &name_loop->node);
- }
- }
-
- /* parse list of files */
- list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
- if (stat(name_loop->name, &statbuf) == 0) {
- if (statbuf.st_size)
- parse_file(rules, name_loop->name);
- else
- dbg(udev, "empty rules file '%s'\n", name_loop->name);
- } else
- err(udev, "could not read '%s': %m\n", name_loop->name);
- list_del(&name_loop->node);
- free(name_loop);
- }
-
- return retval;
-}
-
-void udev_rules_cleanup(struct udev_rules *rules)
-{
- if (rules->buf) {
- free(rules->buf);
- rules->buf = NULL;
- }
-}
-
+++ /dev/null
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <selinux/selinux.h>
-
-#include "udev.h"
-
-static int selinux_enabled;
-security_context_t selinux_prev_scontext;
-
-void selinux_init(struct udev *udev)
-{
- /* record the present security context */
- selinux_enabled = (is_selinux_enabled() > 0);
- info(udev, "selinux=%i\n", selinux_enabled);
- if (!selinux_enabled)
- return;
- matchpathcon_init_prefix(NULL, udev_get_dev_path(udev));
- if (getfscreatecon(&selinux_prev_scontext) < 0) {
- err(udev, "getfscreatecon failed\n");
- selinux_prev_scontext = NULL;
- }
-}
-
-void selinux_exit(struct udev *udev)
-{
- if (!selinux_enabled)
- return;
- freecon(selinux_prev_scontext);
- selinux_prev_scontext = NULL;
-}
-
-void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode)
-{
- security_context_t scontext = NULL;
-
- if (!selinux_enabled)
- return;
- if (matchpathcon(file, mode, &scontext) < 0) {
- err(udev, "matchpathcon(%s) failed\n", file);
- return;
- }
- if (lsetfilecon(file, scontext) < 0)
- err(udev, "setfilecon %s failed: %m\n", file);
- freecon(scontext);
-}
-
-void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode)
-{
- security_context_t scontext = NULL;
-
- if (!selinux_enabled)
- return;
- if (matchpathcon(file, mode, &scontext) < 0) {
- err(udev, "matchpathcon(%s) failed\n", file);
- return;
- }
- if (setfscreatecon(scontext) < 0)
- err(udev, "setfscreatecon %s failed: %m\n", file);
- freecon(scontext);
-}
-
-void udev_selinux_resetfscreatecon(struct udev *udev)
-{
- if (!selinux_enabled)
- return;
- if (setfscreatecon(selinux_prev_scontext) < 0)
- err(udev, "setfscreatecon failed: %m\n");
-}
+++ /dev/null
-/*
- * wrapping of libc features and kernel interfaces
- *
- * Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _UDEV_SYSDEPS_H_
-#define _UDEV_SYSDEPS_H_
-
-#include <stdint.h>
-
-/* needed for our signal handlers to work */
-#undef asmlinkage
-#ifdef __i386__
-#define asmlinkage __attribute__((regparm(0)))
-#else
-#define asmlinkage
-#endif /* __i386__ */
-
-#ifndef HAVE_INOTIFY
-static inline int inotify_init(void)
-{
- return -1;
-}
-
-static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
-{
- return -1;
-}
-
-#define IN_CREATE 0
-#define IN_DELETE 0
-#define IN_MOVE 0
-#define IN_CLOSE_WRITE 0
-
-#endif /* HAVE_INOTIFY */
-#endif
+++ /dev/null
-/*
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <syslog.h>
-#include <pwd.h>
-#include <grp.h>
-#include <sys/types.h>
-#include <sys/utsname.h>
-
-#include "udev.h"
-
-struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort)
-{
- struct name_entry *name_loop;
- struct name_entry *name_new;
-
- /* avoid duplicate entries */
- list_for_each_entry(name_loop, name_list, node) {
- if (strcmp(name_loop->name, name) == 0) {
- dbg(udev, "'%s' is already in the list\n", name);
- return name_loop;
- }
- }
-
- if (sort)
- list_for_each_entry(name_loop, name_list, node) {
- if (strcmp(name_loop->name, name) > 0)
- break;
- }
-
- name_new = malloc(sizeof(struct name_entry));
- if (name_new == NULL)
- return NULL;
- memset(name_new, 0x00, sizeof(struct name_entry));
- util_strlcpy(name_new->name, name, sizeof(name_new->name));
- dbg(udev, "adding '%s'\n", name_new->name);
- list_add_tail(&name_new->node, &name_loop->node);
-
- return name_new;
-}
-
-struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value)
-{
- struct name_entry *name_loop;
- struct name_entry *name_new;
- size_t keylen = strlen(key);
-
- list_for_each_entry(name_loop, name_list, node) {
- if (strncmp(name_loop->name, key, keylen) != 0)
- continue;
- if (name_loop->name[keylen] != '=')
- continue;
- dbg(udev, "key already present '%s', replace it\n", name_loop->name);
- snprintf(name_loop->name, sizeof(name_loop->name), "%s=%s", key, value);
- name_loop->name[sizeof(name_loop->name)-1] = '\0';
- return name_loop;
- }
-
- name_new = malloc(sizeof(struct name_entry));
- if (name_new == NULL)
- return NULL;
- memset(name_new, 0x00, sizeof(struct name_entry));
- snprintf(name_new->name, sizeof(name_new->name), "%s=%s", key, value);
- name_new->name[sizeof(name_new->name)-1] = '\0';
- dbg(udev, "adding '%s'\n", name_new->name);
- list_add_tail(&name_new->node, &name_loop->node);
-
- return name_new;
-}
-
-int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key)
-{
- struct name_entry *name_loop;
- struct name_entry *name_tmp;
- size_t keylen = strlen(key);
- int retval = 0;
-
- list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
- if (strncmp(name_loop->name, key, keylen) != 0)
- continue;
- if (name_loop->name[keylen] != '=')
- continue;
- list_del(&name_loop->node);
- free(name_loop);
- retval = 1;
- break;
- }
- return retval;
-}
-
-void name_list_cleanup(struct udev *udev, struct list_head *name_list)
-{
- struct name_entry *name_loop;
- struct name_entry *name_tmp;
-
- list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
-}
-
-/* calls function for every file found in specified directory */
-int add_matching_files(struct udev *udev, struct list_head *name_list, const char *dirname, const char *suffix)
-{
- struct dirent *ent;
- DIR *dir;
- char filename[UTIL_PATH_SIZE];
-
- dbg(udev, "open directory '%s'\n", dirname);
- dir = opendir(dirname);
- if (dir == NULL) {
- err(udev, "unable to open '%s': %m\n", dirname);
- return -1;
- }
-
- while (1) {
- ent = readdir(dir);
- if (ent == NULL || ent->d_name[0] == '\0')
- break;
-
- if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
- continue;
-
- /* look for file matching with specified suffix */
- if (suffix != NULL) {
- const char *ext;
-
- ext = strrchr(ent->d_name, '.');
- if (ext == NULL)
- continue;
- if (strcmp(ext, suffix) != 0)
- continue;
- }
- dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
-
- snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
- filename[sizeof(filename)-1] = '\0';
- name_list_add(udev, name_list, filename, 1);
- }
-
- closedir(dir);
- return 0;
-}
-
-uid_t lookup_user(struct udev *udev, const char *user)
-{
- struct passwd *pw;
- uid_t uid = 0;
-
- errno = 0;
- pw = getpwnam(user);
- if (pw == NULL) {
- if (errno == 0 || errno == ENOENT || errno == ESRCH)
- err(udev, "specified user '%s' unknown\n", user);
- else
- err(udev, "error resolving user '%s': %m\n", user);
- } else
- uid = pw->pw_uid;
-
- return uid;
-}
-
-extern gid_t lookup_group(struct udev *udev, const char *group)
-{
- struct group *gr;
- gid_t gid = 0;
-
- errno = 0;
- gr = getgrnam(group);
- if (gr == NULL) {
- if (errno == 0 || errno == ENOENT || errno == ESRCH)
- err(udev, "specified group '%s' unknown\n", group);
- else
- err(udev, "error resolving group '%s': %m\n", group);
- } else
- gid = gr->gr_gid;
-
- return gid;
-}
-
+++ /dev/null
-/*
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#include "udev.h"
-
-int create_path(struct udev *udev, const char *path)
-{
- char p[UTIL_PATH_SIZE];
- char *pos;
- struct stat stats;
- int ret;
-
- util_strlcpy(p, path, sizeof(p));
- pos = strrchr(p, '/');
- if (pos == p || pos == NULL)
- return 0;
-
- while (pos[-1] == '/')
- pos--;
- pos[0] = '\0';
-
- dbg(udev, "stat '%s'\n", p);
- if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
- return 0;
-
- if (create_path(udev, p) != 0)
- return -1;
-
- dbg(udev, "mkdir '%s'\n", p);
- udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755);
- ret = mkdir(p, 0755);
- udev_selinux_resetfscreatecon(udev);
- if (ret == 0)
- return 0;
-
- if (errno == EEXIST)
- if (stat(p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
- return 0;
- return -1;
-}
-
-int delete_path(struct udev *udev, const char *path)
-{
- char p[UTIL_PATH_SIZE];
- char *pos;
- int retval;
-
- strcpy (p, path);
- pos = strrchr(p, '/');
- if (pos == p || pos == NULL)
- return 0;
-
- while (1) {
- *pos = '\0';
- pos = strrchr(p, '/');
-
- /* don't remove the last one */
- if ((pos == p) || (pos == NULL))
- break;
-
- /* remove if empty */
- retval = rmdir(p);
- if (errno == ENOENT)
- retval = 0;
- if (retval) {
- if (errno == ENOTEMPTY)
- return 0;
- err(udev, "rmdir(%s) failed: %m\n", p);
- break;
- }
- dbg(udev, "removed '%s'\n", p);
- }
- return 0;
-}
-
-/* Reset permissions on the device node, before unlinking it to make sure,
- * that permisions of possible hard links will be removed too.
- */
-int unlink_secure(struct udev *udev, const char *filename)
-{
- int retval;
-
- retval = chown(filename, 0, 0);
- if (retval)
- err(udev, "chown(%s, 0, 0) failed: %m\n", filename);
-
- retval = chmod(filename, 0000);
- if (retval)
- err(udev, "chmod(%s, 0000) failed: %m\n", filename);
-
- retval = unlink(filename);
- if (errno == ENOENT)
- retval = 0;
-
- if (retval)
- err(udev, "unlink(%s) failed: %m\n", filename);
-
- return retval;
-}
-
-int file_map(const char *filename, char **buf, size_t *bufsize)
-{
- struct stat stats;
- int fd;
-
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- return -1;
- }
-
- if (fstat(fd, &stats) < 0) {
- close(fd);
- return -1;
- }
-
- *buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
- if (*buf == MAP_FAILED) {
- close(fd);
- return -1;
- }
- *bufsize = stats.st_size;
-
- close(fd);
-
- return 0;
-}
-
-void file_unmap(void *buf, size_t bufsize)
-{
- munmap(buf, bufsize);
-}
-
-/* return number of chars until the next newline, skip escaped newline */
-size_t buf_get_line(const char *buf, size_t buflen, size_t cur)
-{
- int escape = 0;
- size_t count;
-
- for (count = cur; count < buflen; count++) {
- if (!escape && buf[count] == '\n')
- break;
-
- if (buf[count] == '\\')
- escape = 1;
- else
- escape = 0;
- }
-
- return count - cur;
-}
#include <getopt.h>
#include "udev.h"
-#include "udev_rules.h"
+#include "udev-rules.h"
int udevadm_test(struct udev *udev, int argc, char *argv[])
{
#endif
#include "udev.h"
-#include "udev_rules.h"
+#include "udev-rules.h"
#define UDEVD_PRIORITY -4
#define UDEV_PRIORITY -2
projects / systemd / .git / commitdiff