mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 19:00:07 +00:00
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
/* Rename the file OLD to NEW. */
|
|
int
|
|
DEFUN(rename, (old, new), CONST char *old AND CONST char *new)
|
|
{
|
|
int save = errno;
|
|
if (__link(old, new) < 0)
|
|
{
|
|
if (errno == EEXIST)
|
|
{
|
|
errno = save;
|
|
/* Race condition, required for 1003.1 conformance. */
|
|
if (__unlink(new) < 0 ||
|
|
__link(old, new) < 0)
|
|
return -1;
|
|
}
|
|
else
|
|
return -1;
|
|
}
|
|
if (__unlink(old) < 0)
|
|
{
|
|
save = errno;
|
|
if (__unlink(new) == 0)
|
|
errno = save;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|