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Diffstat (limited to 'REORG.TODO/hurd/geteuids.c')
-rw-r--r--REORG.TODO/hurd/geteuids.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/geteuids.c b/REORG.TODO/hurd/geteuids.c
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+++ b/REORG.TODO/hurd/geteuids.c
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+/* Copyright (C) 1993-2017 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <hurd.h>
+#include <hurd/id.h>
+#include <string.h>
+
+int
+geteuids (int n, uid_t *uidset)
+{
+ error_t err;
+ int nuids;
+ void *crit;
+
+ crit = _hurd_critical_section_lock ();
+ __mutex_lock (&_hurd_id.lock);
+
+ if (err = _hurd_check_ids ())
+ {
+ __mutex_unlock (&_hurd_id.lock);
+ _hurd_critical_section_unlock (crit);
+ return __hurd_fail (err);
+ }
+
+ nuids = _hurd_id.gen.nuids;
+
+ if (n != 0)
+ {
+ /* Copy the uids onto stack storage and then release the idlock. */
+ uid_t uids[nuids];
+ memcpy (uids, _hurd_id.gen.uids, sizeof (uids));
+ __mutex_unlock (&_hurd_id.lock);
+ _hurd_critical_section_unlock (crit);
+
+ /* Now that the lock is released, we can safely copy the
+ uid set into the user's array, which might fault. */
+ if (nuids > n)
+ nuids = n;
+ memcpy (uidset, uids, nuids * sizeof (uid_t));
+ }
+ else
+ {
+ __mutex_unlock (&_hurd_id.lock);
+ _hurd_critical_section_unlock (crit);
+ }
+
+ return nuids;
+}
+
+/* XXX Remove this alias when we bump the libc soname. */
+
+#ifdef SHARED
+weak_alias (geteuids, __getuids)
+#endif