1/* Get file-specific information about descriptor FD. Linux version.
2 Copyright (C) 1991-2021 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 <https://www.gnu.org/licenses/>. */
18
19#include <fcntl.h>
20#include "pathconf.h"
21
22static long int posix_fpathconf (int fd, int name);
23
24/* Define this first, so it can be inlined. */
25#define __fpathconf static posix_fpathconf
26#include <sysdeps/posix/fpathconf.c>
27
28
29/* Get file-specific information about descriptor FD. */
30long int
31__fpathconf (int fd, int name)
32{
33 struct statfs fsbuf;
34
35 switch (name)
36 {
37 case _PC_LINK_MAX:
38 return __statfs_link_max (__fstatfs (fd, &fsbuf), &fsbuf, NULL, fd);
39
40 case _PC_FILESIZEBITS:
41 return __statfs_filesize_max (__fstatfs (fd, &fsbuf), &fsbuf);
42
43 case _PC_2_SYMLINKS:
44 return __statfs_symlinks (__fstatfs (fd, &fsbuf), &fsbuf);
45
46 case _PC_CHOWN_RESTRICTED:
47 return __statfs_chown_restricted (__fstatfs (fd, &fsbuf), &fsbuf);
48
49 default:
50 return posix_fpathconf (fd, name);
51 }
52}
53