91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/* Copyright (C) 1993-2016 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <hurd.h>
|
|
#include <hurd/id.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);
|