1 /* Copyright (C) 1991-2015 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/>. */
19 #include <hurd/port.h>
21 #include "set-hooks.h"
23 /* Things in the library which want to be run when the auth port changes. */
24 DEFINE_HOOK (_hurd_reauth_hook, (auth_t new_auth));
27 static struct mutex reauth_lock = MUTEX_INITIALIZER;
30 /* Set the auth port to NEW, and reauthenticate
31 everything used by the library. */
33 _hurd_setauth (auth_t new)
37 mach_port_t newport, ref;
39 /* Give the new send right a user reference.
40 This is a good way to check that it is valid. */
41 if (err = __mach_port_mod_refs (__mach_task_self (), new,
42 MACH_PORT_RIGHT_SEND, 1))
47 /* We lock against another thread doing setauth. Anyone who sets
48 _hurd_ports[INIT_PORT_AUTH] some other way is asking to lose. */
49 __mutex_lock (&reauth_lock);
51 /* Install the new port in the cell. */
52 __mutex_lock (&_hurd_id.lock);
53 _hurd_port_set (&_hurd_ports[INIT_PORT_AUTH], new);
55 if (_hurd_id.rid_auth)
57 __mach_port_deallocate (__mach_task_self (), _hurd_id.rid_auth);
58 _hurd_id.rid_auth = MACH_PORT_NULL;
60 __mutex_unlock (&_hurd_id.lock);
62 if (_hurd_init_dtable != NULL)
63 /* We just have the simple table we got at startup.
64 Otherwise, a reauth_hook in dtable.c takes care of this. */
65 for (d = 0; d < _hurd_init_dtablesize; ++d)
66 if (_hurd_init_dtable[d] != MACH_PORT_NULL)
69 ref = __mach_reply_port ();
70 if (! __io_reauthenticate (_hurd_init_dtable[d],
71 ref, MACH_MSG_TYPE_MAKE_SEND) &&
72 ! HURD_PORT_USE (&_hurd_ports[INIT_PORT_AUTH],
73 __auth_user_authenticate
75 ref, MACH_MSG_TYPE_MAKE_SEND,
78 __mach_port_deallocate (__mach_task_self (),
79 _hurd_init_dtable[d]);
80 _hurd_init_dtable[d] = new;
82 __mach_port_destroy (__mach_task_self (), ref);
85 ref = __mach_reply_port ();
87 ! __io_reauthenticate (port,
88 ref, MACH_MSG_TYPE_MAKE_SEND) &&
89 ! __auth_user_authenticate (new,
90 ref, MACH_MSG_TYPE_MAKE_SEND,
92 _hurd_port_set (&_hurd_ports[INIT_PORT_CRDIR], newport);
93 __mach_port_destroy (__mach_task_self (), ref);
95 ref = __mach_reply_port ();
97 ! __io_reauthenticate (port,
98 ref, MACH_MSG_TYPE_MAKE_SEND) &&
99 ! __auth_user_authenticate (new,
100 ref, MACH_MSG_TYPE_MAKE_SEND,
102 _hurd_port_set (&_hurd_ports[INIT_PORT_CWDIR], newport);
103 __mach_port_destroy (__mach_task_self (), ref);
105 /* Run things which want to do reauthorization stuff. */
106 RUN_HOOK (_hurd_reauth_hook, (new));
108 __mutex_unlock (&reauth_lock);
116 __setauth (auth_t new)
118 error_t err = _hurd_setauth (new);
119 return err ? __hurd_fail (err) : 0;
122 weak_alias (__setauth, setauth)