contrib/tar/lib/rename.c

   1 /* Work around the bug in some systems whereby rename fails when the source
   2    path has a trailing slash.  The rename from SunOS 4.1.1_U1 has this bug.
   3    Copyright (C) 2001 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 /* written by Volker Borchert */
  20
  21 #include <config.h>
  22 #include <stdio.h>
  23 #if HAVE_STDLIB_H
  24 # include <stdlib.h>
  25 #endif
  26
  27 #if HAVE_STRING_H
  28 # include <string.h>
  29 #else
  30 # include <strings.h>
  31 #endif
  32
  33 #include "dirname.h"
  34 #include "xalloc.h"
  35
  36 #ifndef HAVE_DECL_FREE
  37 "this configure-time declaration test was not run"
  38 #endif
  39 #if !HAVE_DECL_FREE
  40 void free ();
  41 #endif
  42
  43 /* Rename the file SRC_PATH to DST_PATH, removing any trailing
  44    slashes from SRC_PATH.  Needed for SunOS 4.1.1_U1.  */
  45
  46 int
  47 rpl_rename (const char *src_path, const char *dst_path)
  48 {
  49   char *src_temp;
  50   int ret_val;
  51   size_t s_len = strlen (src_path);
  52
  53   if (s_len && src_path[s_len - 1] == '/')
  54     {
  55       src_temp = xstrdup (src_path);
  56       strip_trailing_slashes (src_temp);
  57     }
  58   else
  59     src_temp = (char *) src_path;
  60
  61   ret_val = rename (src_temp, dst_path);
  62
  63   if (src_temp != src_path)
  64     free (src_temp);
  65
  66   return ret_val;
  67 }