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- /* Copyright (C) 1993, 1994 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 Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <hurd.h>
- #include <hurd/id.h>
- #include <gnu-stabs.h>
-
- struct hurd_id_data _hurd_id;
-
-
- /* Check that _hurd_id.{gen,aux} are valid and update them if not.
- Expects _hurd_id.lock to be held and does not release it. */
-
- error_t
- _hurd_check_ids (void)
- {
- if (! _hurd_id.valid)
- {
- inline void dealloc (__typeof (_hurd_id.gen) *p)
- {
- if (p->uids)
- {
- __vm_deallocate (__mach_task_self (),
- (vm_address_t) p->uids,
- p->nuids * sizeof (uid_t));
- p->uids = NULL;
- }
- p->nuids = 0;
- if (p->gids)
- {
- __vm_deallocate (__mach_task_self (),
- (vm_address_t) p->gids,
- p->ngids * sizeof (gid_t));
- p->gids = NULL;
- }
- p->ngids = 0;
- }
-
- error_t err;
-
- dealloc (&_hurd_id.gen);
- dealloc (&_hurd_id.aux);
-
- if (_hurd_id.rid_auth != MACH_PORT_NULL)
- {
- __mach_port_deallocate (__mach_task_self (), _hurd_id.rid_auth);
- _hurd_id.rid_auth = MACH_PORT_NULL;
- }
-
- if (err = __USEPORT (AUTH, __auth_getids
- (port,
- &_hurd_id.gen.uids, &_hurd_id.gen.nuids,
- &_hurd_id.aux.uids, &_hurd_id.aux.nuids,
- &_hurd_id.gen.gids, &_hurd_id.gen.ngids,
- &_hurd_id.aux.gids, &_hurd_id.aux.ngids)))
- return err;
-
- _hurd_id.valid = 1;
- }
-
- return 0;
- }
-
- static void
- init_id (void)
- {
- __mutex_init (&_hurd_id.lock);
- _hurd_id.valid = 0;
- _hurd_id.rid_auth = MACH_PORT_NULL;
- _hurd_id.gen.uids = _hurd_id.aux.uids = NULL;
- _hurd_id.gen.nuids = _hurd_id.aux.nuids = 0;
- _hurd_id.gen.gids = _hurd_id.aux.gids = NULL;
- _hurd_id.gen.ngids = _hurd_id.aux.ngids = 0;
-
- (void) &init_id; /* Avoid "defined but not used" warning. */
- }
- text_set_element (_hurd_preinit_hook, init_id);
-