| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Copyright (C) 1993-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 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. |
| 8 | |
| 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. |
| 13 | |
| 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 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <errno.h> |
| 19 | #include <unistd.h> |
| 20 | #include <hurd.h> |
| 21 | #include <hurd/id.h> |
| 22 | |
| 23 | /* Get the effective group ID of the calling process. */ |
| 24 | gid_t |
| 25 | __getegid (void) |
| 26 | { |
| 27 | error_t err; |
| 28 | gid_t egid; |
| 29 | |
| 30 | HURD_CRITICAL_BEGIN; |
| 31 | __mutex_lock (&_hurd_id.lock); |
| 32 | |
| 33 | if (err = _hurd_check_ids ()) |
| 34 | { |
| 35 | errno = err; |
| 36 | egid = -1; |
| 37 | } |
| 38 | else if (_hurd_id.gen.ngids >= 1) |
| 39 | egid = _hurd_id.gen.gids[0]; |
| 40 | else if (_hurd_id.aux.ngids >= 1) |
| 41 | /* We have no effective gids. Return the real gid. */ |
| 42 | egid = _hurd_id.aux.gids[0]; |
| 43 | else |
| 44 | { |
| 45 | /* We do not even have a real gid. */ |
| 46 | errno = EGRATUITOUS; |
| 47 | egid = -1; |
| 48 | } |
| 49 | |
| 50 | __mutex_unlock (&_hurd_id.lock); |
| 51 | HURD_CRITICAL_END; |
| 52 | |
| 53 | return egid; |
| 54 | } |
| 55 | |
| 56 | weak_alias (__getegid, getegid) |