/* much like chdir(2), but safer
- Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2005-2006, 2008 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* written by Jim Meyering */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
#include "chdir-safer.h"
#include <sys/stat.h>
#include "same-inode.h"
-#ifndef O_DIRECTORY
-# define O_DIRECTORY 0
-#endif
-
-#ifndef O_NOFOLLOW
-# define O_NOFOLLOW 0
+#ifndef ELOOP
+# define ELOOP 0
#endif
/* Like chdir, but fail if DIR is a symbolic link to a directory (or
/* 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 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);