| /* getresgid -- fetch real group ID, effective group ID, and saved-set group ID |
| Copyright (C) 2002-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <hurd.h> |
| #include <hurd/id.h> |
| |
| /* Fetch the real group ID, effective group ID, and saved-set group ID, |
| of the calling process. */ |
| int |
| __getresgid (gid_t *rgid, gid_t *egid, gid_t *sgid) |
| { |
| error_t err; |
| |
| HURD_CRITICAL_BEGIN; |
| __mutex_lock (&_hurd_id.lock); |
| |
| err = _hurd_check_ids (); |
| if (!err) |
| { |
| if (_hurd_id.aux.ngids < 1) |
| /* We do not even have a real GID. */ |
| err = EGRATUITOUS; |
| else |
| { |
| gid_t real = _hurd_id.aux.gids[0]; |
| |
| *rgid = real; |
| *egid = _hurd_id.gen.ngids < 1 ? real : _hurd_id.gen.gids[0]; |
| *sgid = _hurd_id.aux.ngids < 2 ? real : _hurd_id.aux.gids[1]; |
| } |
| } |
| |
| __mutex_unlock (&_hurd_id.lock); |
| HURD_CRITICAL_END; |
| |
| return __hurd_fail (err); |
| } |
| libc_hidden_def (__getresgid) |
| weak_alias (__getresgid, getresgid) |
