1 /* getresgid -- fetch real group ID, effective group ID, and saved-set group ID
2 Copyright (C) 2002, 2006 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 /* Fetch the real group ID, effective group ID, and saved-set group ID,
26 of the calling process. */
28 __getresgid (gid_t
*rgid
, gid_t
*egid
, gid_t
*sgid
)
31 gid_t real
, eff
, saved
;
34 __mutex_lock (&_hurd_id
.lock
);
36 err
= _hurd_check_ids ();
39 if (_hurd_id
.aux
.ngids
< 1)
40 /* We do not even have a real GID. */
44 real
= _hurd_id
.aux
.gids
[0];
45 eff
= _hurd_id
.gen
.ngids
< 1 ? real
: _hurd_id
.gen
.gids
[0];
46 saved
= _hurd_id
.aux
.ngids
< 2 ? real
: _hurd_id
.aux
.gids
[1];
50 __mutex_unlock (&_hurd_id
.lock
);
54 return __hurd_fail (err
);
61 libc_hidden_def (__getresgid
)
62 weak_alias (__getresgid
, getresgid
)