mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 09:01:07 +00:00
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* Copyright (C) 1991-2014 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
/* Rename the file OLD to NEW. */
|
|
int
|
|
rename (old, new)
|
|
const char *old;
|
|
const char *new;
|
|
{
|
|
int save = errno;
|
|
if (__link (old, new) < 0)
|
|
{
|
|
if (errno == EEXIST)
|
|
{
|
|
__set_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)
|
|
__set_errno (save);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|