From: Jim Meyering <jim@meyering.net>
Date: Sun, 23 May 1999 14:52:32 +0000 (+0000)
Subject: (copy_internal): Make it so `mv -f FILE FILE' does not remove FILE.
X-Git-Tag: SH-UTILS-1_16k~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0868b5794a6d6579509b4a8e5305328ccb4400ce;p=thirdparty%2Fcoreutils.git

(copy_internal): Make it so `mv -f FILE FILE' does not remove FILE.
Based on a patch from Chris Yeo.
---

diff --git a/src/copy.c b/src/copy.c
index fe68d49f48..9246aa07ec 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -568,6 +568,13 @@ copy_internal (const char *src_path, const char *dst_path,
 		}
 	      else
 		{
+		  if (SAME_INODE (src_sb, dst_sb))
+		    {
+		      error (0, 0, _("`%s' and `%s' are the same file"),
+			     src_path, dst_path);
+		      return 1;
+		    }
+
 		  if (unlink (dst_path) && errno != ENOENT)
 		    {
 		      error (0, errno, _("cannot remove old link to `%s'"),