| 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 <sys/types.h> |
| 20 | #include <grp.h> |
| 21 | #include <hurd.h> |
| 22 | #include <hurd/id.h> |
| 23 | |
| 24 | /* Set the group set for the current user to GROUPS (N of them). */ |
| 25 | int |
| 26 | setgroups (size_t n, const gid_t *groups) |
| 27 | { |
| 28 | error_t err; |
| 29 | auth_t newauth; |
| 30 | size_t i; |
| 31 | gid_t new[n]; |
| 32 | |
| 33 | /* Fault before taking locks. */ |
| 34 | for (i = 0; i < n; ++i) |
| 35 | new[i] = groups[i]; |
| 36 | |
| 37 | HURD_CRITICAL_BEGIN; |
| 38 | __mutex_lock (&_hurd_id.lock); |
| 39 | err = _hurd_check_ids (); |
| 40 | if (! err) |
| 41 | { |
| 42 | /* Get a new auth port using those IDs. */ |
| 43 | err = __USEPORT (AUTH, |
| 44 | __auth_makeauth (port, NULL, MACH_MSG_TYPE_COPY_SEND, 0, |
| 45 | _hurd_id.gen.uids, _hurd_id.gen.nuids, |
| 46 | _hurd_id.aux.uids, _hurd_id.aux.nuids, |
| 47 | new, n, |
| 48 | _hurd_id.aux.gids, _hurd_id.aux.ngids, |
| 49 | &newauth)); |
| 50 | } |
| 51 | __mutex_unlock (&_hurd_id.lock); |
| 52 | HURD_CRITICAL_END; |
| 53 | |
| 54 | if (err) |
| 55 | return __hurd_fail (err); |
| 56 | |
| 57 | /* Install the new auth port and reauthenticate everything. */ |
| 58 | err = __setauth (newauth); |
| 59 | __mach_port_deallocate (__mach_task_self (), newauth); |
| 60 | return err; |
| 61 | } |
| 62 | libc_hidden_def (setgroups) |