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- /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <hurd.h>
-
- struct _hurd_port _hurd_auth;
-
- error_t
- __add_auth (sigthread_t me,
- auth_t addauth)
- {
- error_t err;
- auth_t newauth;
-
- if (err = _HURD_PORT_USE (&_hurd_auth,
- __auth_combine (port, addauth, &newauth)))
- return err;
-
- /* XXX clobbers errno. Need per-thread errno. */
- err = __setauth (newauth);
- __mach_port_deallocate (__mach_task_self (), newauth);
- if (err)
- return errno;
-
- __mach_port_deallocate (__mach_task_self (), addauth);
- return POSIX_SUCCESS;
- }
-
- error_t
- __del_auth (sigthread_t me, task_t task,
- uid_t *uids, size_t nuids,
- gid_t *gids, size_t ngids)
- {
- error_t err;
- auth_t newauth;
- size_t i, j;
-
- if (task != __mach_task_self ())
- return EPERM;
-
- __mutex_lock (&_hurd_idlock);
- if (!_hurd_id_valid)
- {
- error_t err = _HURD_PORT_USE (&_hurd_auth,
- __auth_getids (port, &_hurd_id));
- if (err)
- {
- __mutex_unlock (&_hurd_idlock);
- return err;
- }
- _hurd_id_valid = 1;
- }
-
- while (nuids-- > 0)
- {
- const uid_t uid = *uids++;
- for (i = 0; i < _hurd_id.nuids; ++i)
- if (_hurd_id.uidset[i] == uid)
- /* Move the last uid into this slot, and decrease the
- number of uids so the last slot is no longer used. */
- _hurd_id.uidset[i] = _hurd_id.uidset[--_hurd_id.nuids];
- }
- while (ngids-- > 0)
- {
- const gid_t gid = *gids++;
- for (i = 0; i < _hurd_id.ngroups; ++i)
- if (_hurd_id.gidset[i] == gid)
- /* Move the last gid into this slot, and decrease the
- number of gids so the last slot is no longer used. */
- _hurd_id.gidset[i] = _hurd_id.gidset[--_hurd_id.ngroups];
- }
-
- err = _HURD_PORT_USE (&_hurd_auth,
- __auth_makeauth (port, &_hurd_id, &newauth));
- _hurd_id_valid = !err;
- __mutex_unlock (&_hurd_idlock);
-
- if (err)
- return err;
- err = __setauth (newauth); /* XXX clobbers errno */
- __mach_port_deallocate (__mach_task_self (), newauth);
- if (err)
- return errno;
- return POSIX_SUCCESS;
- }
-