X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Flchown.c;h=8cf10dd0c2e6ee82e2da61a6d9492d609655ee07;hb=5ca4b90d06ed5871ed0bf7bd59dbbf23b69a00ea;hp=b15233e246d9bf30c7eca6a89ec074469d3093ee;hpb=07d201fb10f5f9e48656740041eba128e0f9c467;p=gnulib.git
diff --git a/lib/lchown.c b/lib/lchown.c
index b15233e24..8cf10dd0c 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, 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
- 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
@@ -12,38 +14,45 @@
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
-/* Disable the definition of lchown to rpl_lchown (from config.h) in this
- file. Otherwise, we'd get conflicting prototypes for rpl_lchown on
- most systems. */
-#undef lchown
+/* 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
-#include
#include
-#ifndef errno
-extern int errno;
-#endif
+#include
/* 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
-rpl_lchown (const chat *file, uid_t uid, gid_t gid)
+lchown (const char *file, uid_t uid, gid_t gid)
{
+#if HAVE_CHOWN
+# 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);
+
+#else /* !HAVE_CHOWN */
+ errno = ENOSYS;
+ return -1;
+#endif
}