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04277e02 | 1 | /* Copyright (C) 1993-2019 Free Software Foundation, Inc. |
c84142e8 UD |
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 | |
41bdb6e2 AJ |
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. | |
c84142e8 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
c84142e8 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | #include <hurd.h> | |
19 | #include <hurd/id.h> | |
20 | ||
21 | struct hurd_id_data _hurd_id; | |
22 | ||
23 | ||
24 | /* Check that _hurd_id.{gen,aux} are valid and update them if not. | |
25 | Expects _hurd_id.lock to be held and does not release it. */ | |
26 | ||
27 | error_t | |
28 | _hurd_check_ids (void) | |
29 | { | |
30 | if (! _hurd_id.valid) | |
31 | { | |
32 | inline void dealloc (__typeof (_hurd_id.gen) *p) | |
33 | { | |
34 | if (p->uids) | |
35 | { | |
36 | __vm_deallocate (__mach_task_self (), | |
37 | (vm_address_t) p->uids, | |
38 | p->nuids * sizeof (uid_t)); | |
39 | p->uids = NULL; | |
40 | } | |
41 | p->nuids = 0; | |
42 | if (p->gids) | |
43 | { | |
44 | __vm_deallocate (__mach_task_self (), | |
45 | (vm_address_t) p->gids, | |
46 | p->ngids * sizeof (gid_t)); | |
47 | p->gids = NULL; | |
48 | } | |
49 | p->ngids = 0; | |
50 | } | |
51 | ||
52 | error_t err; | |
53 | ||
54 | dealloc (&_hurd_id.gen); | |
55 | dealloc (&_hurd_id.aux); | |
56 | ||
57 | if (_hurd_id.rid_auth != MACH_PORT_NULL) | |
58 | { | |
59 | __mach_port_deallocate (__mach_task_self (), _hurd_id.rid_auth); | |
60 | _hurd_id.rid_auth = MACH_PORT_NULL; | |
61 | } | |
62 | ||
63 | if (err = __USEPORT (AUTH, __auth_getids | |
64 | (port, | |
65 | &_hurd_id.gen.uids, &_hurd_id.gen.nuids, | |
66 | &_hurd_id.aux.uids, &_hurd_id.aux.nuids, | |
67 | &_hurd_id.gen.gids, &_hurd_id.gen.ngids, | |
68 | &_hurd_id.aux.gids, &_hurd_id.aux.ngids))) | |
69 | return err; | |
70 | ||
71 | _hurd_id.valid = 1; | |
72 | } | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
77 | static void | |
78 | init_id (void) | |
79 | { | |
80 | __mutex_init (&_hurd_id.lock); | |
81 | _hurd_id.valid = 0; | |
82 | _hurd_id.rid_auth = MACH_PORT_NULL; | |
83 | _hurd_id.gen.uids = _hurd_id.aux.uids = NULL; | |
84 | _hurd_id.gen.nuids = _hurd_id.aux.nuids = 0; | |
85 | _hurd_id.gen.gids = _hurd_id.aux.gids = NULL; | |
86 | _hurd_id.gen.ngids = _hurd_id.aux.ngids = 0; | |
87 | ||
88 | (void) &init_id; /* Avoid "defined but not used" warning. */ | |
89 | } | |
90 | text_set_element (_hurd_preinit_hook, init_id); |