Add SPDX license identifiers to source files under the LGPL

[thirdparty/systemd.git] / src / basic / fs-util.c

diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index 946f779a329b1b583b22459c4defcf88aee7f3c5..1eaf820afb45a636a16ce76c7522fcff19ceb8ac 100644 (file)
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
   This file is part of systemd.
 
@@ -104,7 +105,6 @@ int rmdir_parents(const char *path, const char *stop) {
         return 0;
 }
 
-
 int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath) {
         struct stat buf;
         int ret;
@@ -809,3 +809,18 @@ int chase_symlinks(const char *path, const char *original_root, unsigned flags,
 
         return exists;
 }
+
+int access_fd(int fd, int mode) {
+        char p[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(fd) + 1];
+        int r;
+
+        /* Like access() but operates on an already open fd */
+
+        xsprintf(p, "/proc/self/fd/%i", fd);
+
+        r = access(p, mode);
+        if (r < 0)
+                r = -errno;
+
+        return r;
+}