X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fchdir-safer.c;h=a6f77b0afc8c3e5b772248a7126a44a1805605cc;hb=4e765f32d65fe20b118366c8cab7bde74a916652;hp=f7d657c60f7db9c50474cf1dd618b027de4152dc;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/lib/chdir-safer.c b/lib/chdir-safer.c
index f7d657c60..a6f77b0af 100644
--- a/lib/chdir-safer.c
+++ b/lib/chdir-safer.c
@@ -1,6 +1,6 @@
 /* much like chdir(2), but safer
 
-   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -29,6 +29,10 @@
 #include <sys/stat.h>
 #include "same-inode.h"
 
+#ifndef HAVE_READLINK
+# define HAVE_READLINK 0
+#endif
+
 /* Like chdir, but fail if DIR is a symbolic link to a directory (or
    similar funny business), or if DIR is not readable.  This avoids a
    minor race condition between when a directory is created or statted
@@ -46,8 +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 (! O_NOFOLLOW)
+     O_NOFOLLOW) so the caller can report a failure.
+     Skip this check if HAVE_READLINK == 0, which should be the case
+     on any system that lacks symlink support.  */
+  if (HAVE_READLINK && ! HAVE_WORKING_O_NOFOLLOW)
     {
       struct stat sb1;
       result = lstat (dir, &sb1);