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 | |
29 | int |
30 | fchmodat (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 | |