/* Copyright (C) 1993, 94, 96, 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> #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. */ #if defined PIC && DO_VERSIONING weak_alias (geteuids, __getuids) #endif