From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 20 Apr 2023 08:10:35 +0000 (+0200)
Subject: fd-util: add ASSERT_FD() that is similar to ASSERT_PTR() but for fds
X-Git-Tag: v254-rc1~649^2~1
X-Git-Url: http://git-history.diyao.me/?a=commitdiff_plain;h=6f81bcef2558835dc2265f932d4b22a8b9424db2;p=systemd%2F.git

fd-util: add ASSERT_FD() that is similar to ASSERT_PTR() but for fds
---

diff --git a/src/basic/fd-util.h b/src/basic/fd-util.h
index 655ad29284..2f59e334c5 100644
--- a/src/basic/fd-util.h
+++ b/src/basic/fd-util.h
@@ -121,3 +121,11 @@ static inline char *format_proc_fd_path(char buf[static PROC_FD_PATH_MAX], int f
         format_proc_fd_path((char[PROC_FD_PATH_MAX]) {}, (fd))
 
 const char *accmode_to_string(int flags);
+
+/* Like ASSERT_PTR, but for fds */
+#define ASSERT_FD(fd)                           \
+        ({                                      \
+                int _fd_ = (fd);                \
+                assert(_fd_ >= 0);              \
+                _fd_;                           \
+        })