1 /* Copyright (C) 1993-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
23 /* Get the effective group ID of the calling process. */
32 __mutex_lock (&_hurd_id
.lock
);
34 if (err
= _hurd_check_ids ())
35 egid
= __hurd_fail (err
);
36 else if (_hurd_id
.gen
.ngids
>= 1)
37 egid
= _hurd_id
.gen
.gids
[0];
38 else if (_hurd_id
.aux
.ngids
>= 1)
39 /* We have no effective gids. Return the real gid. */
40 egid
= _hurd_id
.aux
.gids
[0];
42 /* We do not even have a real gid. */
43 egid
= __hurd_fail (EGRATUITOUS
);
45 __mutex_unlock (&_hurd_id
.lock
);
47 if (egid
== -1 && errno
== EINTR
)
48 /* Got a signal while inside an RPC of the critical section, retry again */
54 weak_alias (__getegid
, getegid
)