crypto/external/bsd/heimdal/dist/lib/roken/rename.c

   1 /*      $NetBSD: rename.c,v 1.1.1.2 2014/04/24 12:45:52 pettai Exp $    */
   2
   3 /***********************************************************************
   4  * Copyright (c) 2010, Secure Endpoints Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * - Redistributions of source code must retain the above copyright
  12  *   notice, this list of conditions and the following disclaimer.
  13  *
  14  * - Redistributions in binary form must reproduce the above copyright
  15  *   notice, this list of conditions and the following disclaimer in
  16  *   the documentation and/or other materials provided with the
  17  *   distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  22  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  23  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  24  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  26  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  28  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  30  * OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  **********************************************************************/
  33
  34 #include <config.h>
  35 #include <krb5/roken.h>
  36
  37 /* rename() for platforms where the native implementation doesn't
  38  * unlink newname. */
  39 int rk_rename(const char * oldname, const char * newname)
  40 {
  41     int ret;
  42
  43     ret = rename(oldname, newname);
  44     if (ret != 0 && (errno == EEXIST || errno == EACCES)) {
  45         ret = unlink(newname);
  46         if (ret == 0)
  47             ret = rename(oldname, newname);
  48     }
  49
  50     return ret;
  51 }