Refine testing for xmm/ymm register use in x86-64 ld.so.
[glibc/pb-stable.git] / hurd / seteuids.c
blobbdf88f89adf8e37832473415e5dd2e83d5b5aec9
1 /* Copyright (C) 1993, 94, 97, 98 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <hurd.h>
20 #include <hurd/id.h>
22 /* Set the uid set for the current user to UIDS (N of them). */
23 int
24 seteuids (int n, const uid_t *uids)
26 error_t err;
27 auth_t newauth;
28 int i;
29 gid_t new[n];
31 /* Fault before taking locks. */
32 for (i = 0; i < n; ++i)
33 new[i] = uids[i];
35 HURD_CRITICAL_BEGIN;
36 __mutex_lock (&_hurd_id.lock);
37 err = _hurd_check_ids ();
38 if (! err)
40 /* Get a new auth port using those IDs. */
41 err = __USEPORT (AUTH,
42 __auth_makeauth (port, NULL, 0, 0,
43 new, n,
44 _hurd_id.aux.uids, _hurd_id.aux.nuids,
45 _hurd_id.gen.gids, _hurd_id.gen.ngids,
46 _hurd_id.aux.gids, _hurd_id.aux.ngids,
47 &newauth));
49 __mutex_unlock (&_hurd_id.lock);
50 HURD_CRITICAL_END;
52 if (err)
53 return __hurd_fail (err);
55 /* Install the new auth port and reauthenticate everything. */
56 err = __setauth (newauth);
57 __mach_port_deallocate (__mach_task_self (), newauth);
58 return err;