mirror of https://github.com/sudo-project/sudo.git
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
|
|
* SPDX-License-Identifier: ISC
|
|
*
|
|
* Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
|
|
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sudo_compat.h>
|
|
|
|
#ifndef HAVE_FCHMODAT
|
|
int
|
|
sudo_fchmodat(int dfd, const char *path, mode_t mode, int flag)
|
|
{
|
|
int odfd, ret = -1;
|
|
|
|
if (ISSET(flag, AT_SYMLINK_NOFOLLOW)) {
|
|
errno = ENOTSUP;
|
|
return -1;
|
|
}
|
|
|
|
if (dfd == (int)AT_FDCWD)
|
|
return chmod(path, mode);
|
|
|
|
/* Save cwd */
|
|
if ((odfd = open(".", O_RDONLY)) == -1)
|
|
goto done;
|
|
|
|
if (fchdir(dfd) == -1)
|
|
goto done;
|
|
|
|
ret = chmod(path, mode);
|
|
|
|
/* Restore cwd */
|
|
if (fchdir(odfd) == -1) {
|
|
/* Should not happen */
|
|
ret = -1;
|
|
}
|
|
|
|
done:
|
|
if (odfd != -1)
|
|
close(odfd);
|
|
|
|
return ret;
|
|
}
|
|
#endif /* HAVE_FCHMODAT */
|