X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Flchown.c;h=07aef87394a9852d0527c95a78d98e3ebb370719;hb=0a3f7af426469ab51370585e1a3afba66ff24b57;hp=04c27c146db861e33fe9700477f06be222655dfc;hpb=7aa812e9a9db21bc23fcf0672c99b74e6c83f09a;p=gnulib.git
diff --git a/lib/lchown.c b/lib/lchown.c
index 04c27c146..07aef8739 100644
--- a/lib/lchown.c
+++ b/lib/lchown.c
@@ -1,10 +1,12 @@
/* Provide a stub lchown function for systems that lack it.
- Copyright (C) 1998 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1998, 1999, 2002, 2004, 2006, 2007 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
- 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
@@ -12,33 +14,49 @@
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see . */
/* written by Jim Meyering */
#include
-#include
-#include
+/* If the system chown does not follow symlinks, we don't want it
+ replaced by gnulib's chown, which does follow symlinks. */
+#if CHOWN_MODIFIES_SYMLINK
+# define REPLACE_CHOWN 0
+#endif
+#include
+
#include
-#ifndef errno
-extern int errno;
+#include
+
+/* Some systems don't have EOPNOTSUPP. */
+#ifndef EOPNOTSUPP
+# ifdef ENOTSUP
+# define EOPNOTSUPP ENOTSUP
+# else
+/* Some systems don't have ENOTSUP either. */
+# define EOPNOTSUPP EINVAL
+# endif
#endif
/* Work just like chown, except when FILE is a symbolic link.
- In that case, set errno to ENOSYS and return -1. */
+ In that case, set errno to EOPNOTSUPP and return -1.
+ But if autoconf tests determined that chown modifies
+ symlinks, then just call chown. */
int
-lchown (const chat *file, uid_t uid, gid_t gid)
+lchown (const char *file, uid_t uid, gid_t gid)
{
+#if ! CHOWN_MODIFIES_SYMLINK
struct stat stats;
- if (lstat (file, &stats) && S_ISLNK (stats.st_mode))
+ if (lstat (file, &stats) == 0 && S_ISLNK (stats.st_mode))
{
- errno = ENOSYS;
+ errno = EOPNOTSUPP;
return -1;
}
+#endif
return chown (file, uid, gid);
}