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3bbceb12 | 1 | /* `group_member' -- test if process is in a given group. Hurd version. |
04277e02 | 2 | Copyright (C) 1993-2019 Free Software Foundation, Inc. |
478b92f0 UD |
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 | |
41bdb6e2 AJ |
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. | |
478b92f0 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
478b92f0 | 14 | |
41bdb6e2 | 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/>. */ |
3bbceb12 RM |
18 | |
19 | #include <errno.h> | |
20 | #include <unistd.h> | |
21 | #include <hurd.h> | |
22 | #include <hurd/id.h> | |
23 | ||
24 | int | |
bd2260a2 | 25 | __group_member (gid_t gid) |
3bbceb12 RM |
26 | { |
27 | int member = 0; | |
28 | error_t err; | |
29 | void *crit; | |
30 | ||
31 | crit = _hurd_critical_section_lock (); | |
32 | __mutex_lock (&_hurd_id.lock); | |
33 | ||
34 | err = _hurd_check_ids (); | |
35 | if (! err) | |
36 | { | |
37 | size_t i; | |
38 | for (i = 0; i < _hurd_id.gen.ngids; ++i) | |
39 | if (_hurd_id.gen.gids[i] == gid) | |
40 | { | |
41 | member = 1; | |
42 | break; | |
43 | } | |
44 | } | |
45 | ||
46 | __mutex_unlock (&_hurd_id.lock); | |
47 | _hurd_critical_section_unlock (crit); | |
48 | ||
49 | if (err) | |
50 | __hurd_fail (err); | |
51 | return member; | |
52 | } | |
53 | ||
54 | weak_alias (__group_member, group_member) |