101 lines
2.7 KiB
C
101 lines
2.7 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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struct _hurd_port _hurd_auth;
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error_t
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__add_auth (sigthread_t me,
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auth_t addauth)
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{
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error_t err;
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auth_t newauth;
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if (err = _HURD_PORT_USE (&_hurd_auth,
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__auth_combine (port, addauth, &newauth)))
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return err;
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/* XXX clobbers errno. Need per-thread errno. */
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err = __setauth (newauth);
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__mach_port_deallocate (__mach_task_self (), newauth);
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if (err)
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return errno;
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__mach_port_deallocate (__mach_task_self (), addauth);
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return POSIX_SUCCESS;
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}
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error_t
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__del_auth (sigthread_t me, task_t task,
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uid_t *uids, size_t nuids,
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gid_t *gids, size_t ngids)
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{
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error_t err;
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auth_t newauth;
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size_t i, j;
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if (task != __mach_task_self ())
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return EPERM;
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__mutex_lock (&_hurd_idlock);
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if (!_hurd_id_valid)
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{
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error_t err = _HURD_PORT_USE (&_hurd_auth,
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__auth_getids (port, &_hurd_id));
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if (err)
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{
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__mutex_unlock (&_hurd_idlock);
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return err;
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}
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_hurd_id_valid = 1;
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}
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while (nuids-- > 0)
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{
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const uid_t uid = *uids++;
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for (i = 0; i < _hurd_id.nuids; ++i)
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if (_hurd_id.uidset[i] == uid)
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/* Move the last uid into this slot, and decrease the
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number of uids so the last slot is no longer used. */
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_hurd_id.uidset[i] = _hurd_id.uidset[--_hurd_id.nuids];
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}
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while (ngids-- > 0)
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{
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const gid_t gid = *gids++;
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for (i = 0; i < _hurd_id.ngroups; ++i)
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if (_hurd_id.gidset[i] == gid)
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/* Move the last gid into this slot, and decrease the
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number of gids so the last slot is no longer used. */
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_hurd_id.gidset[i] = _hurd_id.gidset[--_hurd_id.ngroups];
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}
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err = _HURD_PORT_USE (&_hurd_auth,
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__auth_makeauth (port, &_hurd_id, &newauth));
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_hurd_id_valid = !err;
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__mutex_unlock (&_hurd_idlock);
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if (err)
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return err;
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err = __setauth (newauth); /* XXX clobbers errno */
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__mach_port_deallocate (__mach_task_self (), newauth);
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if (err)
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return errno;
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return POSIX_SUCCESS;
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}
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