From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Tue, 14 Mar 2023 20:05:09 +0000 (+0100)
Subject: stat-util: Add verify_regular_at()
X-Git-Tag: v254-rc1~958
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bd7a79528cdda2440df7fbbf7c359d77d7297472;p=thirdparty%2Fsystemd.git

stat-util: Add verify_regular_at()
---

diff --git a/src/basic/stat-util.c b/src/basic/stat-util.c
index 88b8346a0fd..42cefed48d7 100644
--- a/src/basic/stat-util.c
+++ b/src/basic/stat-util.c
@@ -307,6 +307,18 @@ int fd_verify_regular(int fd) {
         return stat_verify_regular(&st);
 }
 
+int verify_regular_at(int dir_fd, const char *path, bool follow) {
+        struct stat st;
+
+        assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
+        assert(path);
+
+        if (fstatat(dir_fd, path, &st, (isempty(path) ? AT_EMPTY_PATH : 0) | (follow ? 0 : AT_SYMLINK_NOFOLLOW)) < 0)
+                return -errno;
+
+        return stat_verify_regular(&st);
+}
+
 int stat_verify_directory(const struct stat *st) {
         assert(st);
 
diff --git a/src/basic/stat-util.h b/src/basic/stat-util.h
index de11c0cf7c2..4bf15a731d9 100644
--- a/src/basic/stat-util.h
+++ b/src/basic/stat-util.h
@@ -65,6 +65,7 @@ int path_is_network_fs(const char *path);
 
 int stat_verify_regular(const struct stat *st);
 int fd_verify_regular(int fd);
+int verify_regular_at(int dir_fd, const char *path, bool follow);
 
 int stat_verify_directory(const struct stat *st);
 int fd_verify_directory(int fd);