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/* rename.c -- rename a file
Copyright (C) 1988, 1992 Free Software Foundation
This file is part of GNU Tar.
GNU Tar is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Tar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Tar; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/stat.h>
#include <errno.h>
#ifndef
#ifndef STD_HEADERS
extern int errno;
#endif
/* Rename file FROM to file TO.
Return 0 if successful, -1 if not. */
int
rename (from, to)
char *from;
char *to;
{
struct stat from_stats;
if (stat (from, &from_stats))
return -1;
if (unlink (to) && errno != ENOENT)
return -1;
if (link (from, to))
return -1;
if (unlink (from) && errno != ENOENT)
{
unlink (to);
return -1;
}
return 0;
}
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