X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Frename.c;h=d649e2e96e0cc684b1aaa8f31867313279e59673;hb=1ef07171f7e8abdb703651a0f6c81e17559b3720;hp=44821c94fc18e73977276317ed8baaff51c1b5ba;hpb=47a70ed9f7a874deda74aff3c33fc61376775860;p=gnulib.git

diff --git a/lib/rename.c b/lib/rename.c
index 44821c94f..d649e2e96 100644
--- a/lib/rename.c
+++ b/lib/rename.c
@@ -1,4 +1,4 @@
-/* rename.c -- BSD compatible directory function for System V
+/* BSD compatible rename and directory rename function for System V.
    Copyright (C) 1988, 1990 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
@@ -12,11 +12,11 @@
    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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#if HAVE_CONFIG_H
+# include <config.h>
 #endif
 
 #include <sys/types.h>
@@ -26,21 +26,19 @@
 extern int errno;
 #endif
 
-#ifdef STAT_MACROS_BROKEN
-#undef S_ISDIR
-#endif /* STAT_MACROS_BROKEN.  */
+#if STAT_MACROS_BROKEN
+# undef S_ISDIR
+#endif
 
 #if !defined(S_ISDIR) && defined(S_IFDIR)
-#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 #endif
 
 /* Rename file FROM to file TO.
    Return 0 if successful, -1 if not. */
 
 int
-rename (from, to)
-     char *from;
-     char *to;
+rename (char *from, char *to)
 {
   struct stat from_stats, to_stats;
   int pid, status;
@@ -67,6 +65,12 @@ rename (from, to)
         return -1;
     }
 
+#ifdef MVDIR
+
+/* If MVDIR is defined, it should be the full filename of a setuid root
+   program able to link and unlink directories.  If MVDIR is not defined,
+   then the capability of renaming directories may be missing.  */
+
   if (S_ISDIR (from_stats.st_mode))
     {
       /* Need a setuid root process to link and unlink directories. */
@@ -90,6 +94,9 @@ rename (from, to)
 	}
     }
   else
+
+#endif /* MVDIR */
+
     {
       if (link (from, to))
 	return -1;