1/* Change the protections of file relative to open directory. Linux version.
2 Copyright (C) 2006-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <fcntl.h>
21#include <stddef.h>
22#include <stdio.h>
23#include <string.h>
24#include <unistd.h>
25#include <sys/types.h>
26#include <alloca.h>
27#include <sysdep.h>
28
29int
30fchmodat (int fd, const char *file, mode_t mode, int flag)
31{
32 if (flag & ~AT_SYMLINK_NOFOLLOW)
33 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
34#ifndef __NR_lchmod /* Linux so far has no lchmod syscall. */
35 if (flag & AT_SYMLINK_NOFOLLOW)
36 return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOTSUP);
37#endif
38
39 return INLINE_SYSCALL (fchmodat, 3, fd, file, mode);
40}
41