/* Copyright (C) 1993-2018 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 . */ #include #include #include #include /* Get the effective group ID of the calling process. */ gid_t __getegid (void) { error_t err; gid_t egid; HURD_CRITICAL_BEGIN; __mutex_lock (&_hurd_id.lock); if (err = _hurd_check_ids ()) { errno = err; egid = -1; } else if (_hurd_id.gen.ngids >= 1) egid = _hurd_id.gen.gids[0]; else if (_hurd_id.aux.ngids >= 1) /* We have no effective gids. Return the real gid. */ egid = _hurd_id.aux.gids[0]; else { /* We do not even have a real gid. */ errno = EGRATUITOUS; egid = -1; } __mutex_unlock (&_hurd_id.lock); HURD_CRITICAL_END; return egid; } weak_alias (__getegid, getegid)