fs-util: suppress world-writable warnings if we read /dev/null

Fixes: #12165

diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index ce1f5454c83e1ba5a67d8067a0a2e4fb0ee204d7..9f3fd4569111ba8e1700a7b9170fc52bb8e8f69f 100644 (file)
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -353,6 +353,10 @@ int fd_warn_permissions(const char *path, int fd) {
         if (fstat(fd, &st) < 0)
                 return -errno;
 
+        /* Don't complain if we are reading something that is not a file, for example /dev/null */
+        if (!S_ISREG(st.st_mode))
+                return 0;
+
         if (st.st_mode & 0111)
                 log_warning("Configuration file %s is marked executable. Please remove executable permission bits. Proceeding anyway.", path);