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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.
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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
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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.
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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/>. */
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18
19#include <errno.h>
20#include <unistd.h>
21#include <hurd.h>
22#include <hurd/id.h>
23
24int
bd2260a2 25__group_member (gid_t gid)
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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
54weak_alias (__group_member, group_member)