projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0d5cb2c7 | 1 | /* getresgid -- fetch real group ID, effective group ID, and saved-set group ID |
| 688903eb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
| 747bf98e RM |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
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18 | |
| 19 | #include <errno.h> | |
| 20 | #include <unistd.h> | |
| 21 | #include <hurd.h> | |
| 22 | #include <hurd/id.h> | |
| 23 | ||
| 0d5cb2c7 | 24 | /* Fetch the real group ID, effective group ID, and saved-set group ID, |
| 747bf98e RM |
25 | of the calling process. */ |
| 26 | int | |
| 0d5cb2c7 | 27 | __getresgid (gid_t *rgid, gid_t *egid, gid_t *sgid) |
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28 | { |
| 29 | error_t err; | |
| 0d5cb2c7 | 30 | gid_t real, eff, saved; |
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31 | |
| 32 | HURD_CRITICAL_BEGIN; | |
| 33 | __mutex_lock (&_hurd_id.lock); | |
| 34 | ||
| 35 | err = _hurd_check_ids (); | |
| 36 | if (!err) | |
| 37 | { | |
| 38 | if (_hurd_id.aux.ngids < 1) | |
| 39 | /* We do not even have a real GID. */ | |
| 40 | err = EGRATUITOUS; | |
| 41 | else | |
| 42 | { | |
| 43 | real = _hurd_id.aux.gids[0]; | |
| 747bf98e | 44 | eff = _hurd_id.gen.ngids < 1 ? real : _hurd_id.gen.gids[0]; |
| 0d5cb2c7 | 45 | saved = _hurd_id.aux.ngids < 2 ? real : _hurd_id.aux.gids[1]; |
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46 | } |
| 47 | } | |
| 48 | ||
| 49 | __mutex_unlock (&_hurd_id.lock); | |
| 50 | HURD_CRITICAL_END; | |
| 51 | ||
| 52 | if (err) | |
| 53 | return __hurd_fail (err); | |
| 54 | ||
| a334319f | 55 | *rgid = real; |
| 0d5cb2c7 | 56 | *egid = eff; |
| 747bf98e RM |
57 | *sgid = saved; |
| 58 | return 0; | |
| 59 | } | |
| 60 | libc_hidden_def (__getresgid) | |
| 61 | weak_alias (__getresgid, getresgid) |