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sourceware.org Git - glibc.git/blob - sysdeps/mach/hurd/seteuid.c
1 /* Copyright (C) 1993-2015 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, see
16 <http://www.gnu.org/licenses/>. */
21 #include <sys/types.h>
25 /* Set the effective user ID of the calling process to UID. */
33 __mutex_lock (&_hurd_id
.lock
);
34 err
= _hurd_check_ids ();
38 /* Make a new auth handle which has EUID as the first element in the
39 list of effective uids. */
41 if (_hurd_id
.gen
.nuids
> 0)
43 _hurd_id
.gen
.uids
[0] = uid
;
47 err
= __USEPORT (AUTH
, __auth_makeauth
48 (port
, NULL
, MACH_MSG_TYPE_COPY_SEND
, 0,
49 _hurd_id
.gen
.nuids
? _hurd_id
.gen
.uids
: &uid
,
50 _hurd_id
.gen
.nuids
?: 1,
51 _hurd_id
.aux
.uids
, _hurd_id
.aux
.nuids
,
52 _hurd_id
.gen
.gids
, _hurd_id
.gen
.ngids
,
53 _hurd_id
.aux
.gids
, _hurd_id
.aux
.ngids
,
56 __mutex_unlock (&_hurd_id
.lock
);
60 return __hurd_fail (err
);
62 /* Install the new handle and reauthenticate everything. */
63 err
= __setauth (newauth
);
64 __mach_port_deallocate (__mach_task_self (), newauth
);
67 libc_hidden_def (seteuid
)
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