89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <hurd.h>
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/* Things in the library which want to be run when the auth port changes. */
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const struct
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{
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size_t n;
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void (*fn[0]) ();
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} _hurd_reauth_hook;
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/* Set the auth port to NEW, and reauthenticate
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everything used by the library. */
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int
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__setauth (auth_t new)
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{
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error_t err;
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auth_t old;
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int d;
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mach_port_t ignore;
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void (**fn) (void);
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/* Give the new send right a user reference.
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This is a good way to check that it is valid. */
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if (__mach_port_mod_refs (__mach_task_self (), new,
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MACH_PORT_RIGHT_SEND, 1))
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{
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errno = EINVAL;
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return -1;
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}
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/* Install the new port in the _hurd_auth cell. */
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__mutex_lock (&_hurd_idlock);
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_hurd_port_set (&_hurd_auth, new);
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_hurd_id_valid = 0;
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__mutex_unlock (&_hurd_idlock);
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/* Reauthenticate with the proc server. */
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if (!_HURD_PORT_USE (&_hurd_proc,
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__proc_reauthenticate (port) ||
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__auth_user_authenticate (new, port, &ignore))
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&& ignore != MACH_PORT_NULL)
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__mach_port_deallocate (__mach_task_self (), ignore);
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/* Reauthenticate the file descriptor table. */
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if (_hurd_init_dtable != NULL)
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/* We just have the simple table we got at startup. */
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for (d = 0; d < _hurd_init_dtablesize; ++d)
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if (_hurd_init_dtable[d] != MACH_PORT_NULL)
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{
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mach_port_t new;
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if (! __io_reauthenticate (_hurd_init_dtable[d]) &&
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! _HURD_PORT_USE (&_hurd_auth,
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__auth_user_authenticate (_hurd_init_dtable[d],
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&new)))
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{
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__mach_port_deallocate (__mach_task_self (),
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_hurd_init_dtable[d]);
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_hurd_init_dtable[d] = new;
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}
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}
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/* Run things which want to do reauthorization stuff. */
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for (fn = _hurd_reauth_hook.fn; *fn != NULL; ++fn)
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(**fn) ();
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return 0;
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}
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