1*2fe8fb19SBen Gras /* $NetBSD: getgrouplist.c,v 1.22 2008/04/28 20:22:59 martin Exp $ */
2*2fe8fb19SBen Gras
3*2fe8fb19SBen Gras /*-
4*2fe8fb19SBen Gras * Copyright (c) 2004-2005 The NetBSD Foundation, Inc.
5*2fe8fb19SBen Gras * All rights reserved.
6*2fe8fb19SBen Gras *
7*2fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation
8*2fe8fb19SBen Gras * by Luke Mewburn.
9*2fe8fb19SBen Gras *
10*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without
11*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions
12*2fe8fb19SBen Gras * are met:
13*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright
14*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer.
15*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright
16*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the
17*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution.
18*2fe8fb19SBen Gras *
19*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*2fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*2fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*2fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*2fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*2fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*2fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*2fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*2fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*2fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*2fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE.
30*2fe8fb19SBen Gras */
31*2fe8fb19SBen Gras
32*2fe8fb19SBen Gras #include <sys/cdefs.h>
33*2fe8fb19SBen Gras #if defined(LIBC_SCCS) && !defined(lint)
34*2fe8fb19SBen Gras #if 0
35*2fe8fb19SBen Gras static char sccsid[] = "@(#)getgrouplist.c 8.2 (Berkeley) 12/8/94";
36*2fe8fb19SBen Gras #else
37*2fe8fb19SBen Gras __RCSID("$NetBSD: getgrouplist.c,v 1.22 2008/04/28 20:22:59 martin Exp $");
38*2fe8fb19SBen Gras #endif
39*2fe8fb19SBen Gras #endif /* LIBC_SCCS and not lint */
40*2fe8fb19SBen Gras
41*2fe8fb19SBen Gras /*
42*2fe8fb19SBen Gras * calculate group access list
43*2fe8fb19SBen Gras */
44*2fe8fb19SBen Gras
45*2fe8fb19SBen Gras #include "namespace.h"
46*2fe8fb19SBen Gras #include <sys/param.h>
47*2fe8fb19SBen Gras
48*2fe8fb19SBen Gras #include <assert.h>
49*2fe8fb19SBen Gras #include <nsswitch.h>
50*2fe8fb19SBen Gras #include <stdarg.h>
51*2fe8fb19SBen Gras #include <unistd.h>
52*2fe8fb19SBen Gras
53*2fe8fb19SBen Gras #ifdef __weak_alias
__weak_alias(getgrouplist,_getgrouplist)54*2fe8fb19SBen Gras __weak_alias(getgrouplist,_getgrouplist)
55*2fe8fb19SBen Gras #endif
56*2fe8fb19SBen Gras
57*2fe8fb19SBen Gras int
58*2fe8fb19SBen Gras getgrouplist(const char *uname, gid_t agroup, gid_t *groups, int *grpcnt)
59*2fe8fb19SBen Gras {
60*2fe8fb19SBen Gras int rv, groupc;
61*2fe8fb19SBen Gras
62*2fe8fb19SBen Gras _DIAGASSERT(uname != NULL);
63*2fe8fb19SBen Gras /* groups may be NULL if just sizing when invoked with *grpcnt = 0 */
64*2fe8fb19SBen Gras _DIAGASSERT(grpcnt != NULL);
65*2fe8fb19SBen Gras
66*2fe8fb19SBen Gras groupc = 0;
67*2fe8fb19SBen Gras rv = getgroupmembership(uname, agroup, groups, *grpcnt, &groupc);
68*2fe8fb19SBen Gras *grpcnt = groupc; /* set groupc to the actual # of groups */
69*2fe8fb19SBen Gras return rv;
70*2fe8fb19SBen Gras }
71