aboutsummaryrefslogtreecommitdiff
path: root/hurd/seteuids.c
diff options
context:
space:
mode:
Diffstat (limited to 'hurd/seteuids.c')
-rw-r--r--hurd/seteuids.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/hurd/seteuids.c b/hurd/seteuids.c
new file mode 100644
index 0000000..231dce5
--- /dev/null
+++ b/hurd/seteuids.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1993, 94, 97, 98 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <hurd.h>
+#include <hurd/id.h>
+
+/* Set the uid set for the current user to UIDS (N of them). */
+int
+seteuids (int n, const uid_t *uids)
+{
+ error_t err;
+ auth_t newauth;
+ int i;
+ gid_t new[n];
+
+ /* Fault before taking locks. */
+ for (i = 0; i < n; ++i)
+ new[i] = uids[i];
+
+ HURD_CRITICAL_BEGIN;
+ __mutex_lock (&_hurd_id.lock);
+ err = _hurd_check_ids ();
+ if (! err)
+ {
+ /* Get a new auth port using those IDs. */
+ err = __USEPORT (AUTH,
+ __auth_makeauth (port, NULL, 0, 0,
+ new, n,
+ _hurd_id.aux.uids, _hurd_id.aux.nuids,
+ _hurd_id.gen.gids, _hurd_id.gen.ngids,
+ _hurd_id.aux.gids, _hurd_id.aux.ngids,
+ &newauth));
+ }
+ __mutex_unlock (&_hurd_id.lock);
+ HURD_CRITICAL_END;
+
+ if (err)
+ return __hurd_fail (err);
+
+ /* Install the new auth port and reauthenticate everything. */
+ err = __setauth (newauth);
+ __mach_port_deallocate (__mach_task_self (), newauth);
+ return err;
+}