X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Flchown.c;h=b04fb36468bd5caa343b877e8b5708936a75f206;hb=8912e6d4dccc2f3b7d125229ef9ee05dda1f36ed;hp=3e2b6c9f25a3f0eb77df6164af3a7900fbb16b80;hpb=5e3f50237a1c33968f4adf865211b65e1100785a;p=gnulib.git

diff --git a/lib/lchown.c b/lib/lchown.c
index 3e2b6c9f2..b04fb3646 100644
--- a/lib/lchown.c
+++ b/lib/lchown.c
@@ -1,5 +1,5 @@
 /* Provide a stub lchown function for systems that lack it.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2002, 2004 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
@@ -22,23 +22,31 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
+
+#include "lchown.h"
+#include "stat-macros.h"
+
+/* Declare chown to avoid a warning.  Don't include unistd.h,
+   because it may have a conflicting prototype for lchown.  */
+int chown ();
 
 /* 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 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);
 }