Home | History | Annotate | Line # | Download | only in gen 
      1 /*	$NetBSD: getgrouplist.c,v 1.22 2008/04/28 20:22:59 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004-2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Luke Mewburn.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 #if 0
     35 static char sccsid[] = "@(#)getgrouplist.c	8.2 (Berkeley) 12/8/94";
     36 #else
     37 __RCSID("$NetBSD: getgrouplist.c,v 1.22 2008/04/28 20:22:59 martin Exp $");
     38 #endif
     39 #endif /* LIBC_SCCS and not lint */
     40 
     41 /*
     42  * calculate group access list
     43  */
     44 
     45 #include "namespace.h"
     46 #include <sys/param.h>
     47 
     48 #include <assert.h>
     49 #include <nsswitch.h>
     50 #include <stdarg.h>
     51 #include <unistd.h>
     52 
     53 #ifdef __weak_alias
     54 __weak_alias(getgrouplist,_getgrouplist)
     55 #endif
     56 
     57 int
     58 getgrouplist(const char *uname, gid_t agroup, gid_t *groups, int *grpcnt)
     59 {
     60 	int	rv, groupc;
     61 
     62 	_DIAGASSERT(uname != NULL);
     63 	/* groups may be NULL if just sizing when invoked with *grpcnt = 0 */
     64 	_DIAGASSERT(grpcnt != NULL);
     65 
     66 	groupc = 0;
     67 	rv = getgroupmembership(uname, agroup, groups, *grpcnt, &groupc);
     68 	*grpcnt = groupc;	/* set groupc to the actual # of groups */
     69 	return rv;
     70 }
     71