| /* Copyright (C) 1993-2014 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> |
| |
| /* Get the real group ID of the calling process. */ |
| gid_t |
| __getgid (void) |
| { |
| error_t err; |
| gid_t gid; |
| |
| HURD_CRITICAL_BEGIN; |
| __mutex_lock (&_hurd_id.lock); |
| |
| if (err = _hurd_check_ids ()) |
| { |
| errno = err; |
| gid = -1; |
| } |
| else if (_hurd_id.aux.ngids >= 1) |
| gid = _hurd_id.aux.gids[0]; |
| else |
| { |
| /* We do not even have a real gid. */ |
| errno = EGRATUITOUS; |
| gid = -1; |
| } |
| |
| __mutex_unlock (&_hurd_id.lock); |
| HURD_CRITICAL_END; |
| |
| return gid; |
| } |
| |
| weak_alias (__getgid, getgid) |
