Make chdir-safer.c more efficient on a system with no symlinks.

[gnulib.git] / lib / chdir-safer.c

diff --git a/lib/chdir-safer.c b/lib/chdir-safer.c
index a5c9a4d..03f3720 100644 (file)
--- a/lib/chdir-safer.c
+++ b/lib/chdir-safer.c
@@ -50,8 +50,10 @@ chdir_no_follow (char const *dir)
   /* If open follows symlinks, lstat DIR and fstat FD to ensure that
      they are the same file; if they are different files, set errno to
      ELOOP (the same value that open uses for symlinks with
-     O_NOFOLLOW) so the caller can report a failure.  */
-  if (! HAVE_WORKING_O_NOFOLLOW)
+     O_NOFOLLOW) so the caller can report a failure.
+     Skip this check if ELOOP == 0, which should be the case
+     on any system that lacks symlink support.  */
+  if (ELOOP && ! HAVE_WORKING_O_NOFOLLOW)
     {
       struct stat sb1;
       result = lstat (dir, &sb1);