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c90c5d41 1/* Change the protections of file relative to open directory. Linux version.
04277e02 2 Copyright (C) 2006-2019 Free Software Foundation, Inc.
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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
59ba27a6 16 License along with the GNU C Library; if not, see
5a82c748 17 <https://www.gnu.org/licenses/>. */
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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
bd2260a2 30fchmodat (int fd, const char *file, mode_t mode, int flag)
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31{
32 if (flag & ~AT_SYMLINK_NOFOLLOW)
2caca60d 33 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
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34#ifndef __NR_lchmod /* Linux so far has no lchmod syscall. */
35 if (flag & AT_SYMLINK_NOFOLLOW)
2caca60d 36 return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOTSUP);
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37#endif
38
e5dee2c8 39 return INLINE_SYSCALL (fchmodat, 3, fd, file, mode);
c90c5d41 40}