xref: /titanic_50/usr/src/lib/libbc/libc/sys/sys5/getgroups.c (revision 0bb073995ac5a95bd35f2dd790df1ea3d8c2d507)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*
30  * POSIX.1 compatible getgroups() routine
31  * This is needed while gid_t is not the same size as int (or whatever the
32  * syscall is using at the time).
33  */
34 
35 #include <sys/types.h>
36 #include <sys/param.h>
37 #include <sys/syscall.h>
38 
39 int
40 getgroups(int gidsetsize, gid_t grouplist[])
41 {
42 	int	glist[NGROUPS];	/* getgroups() syscall returns ints */
43 	int	i;	/* loop control */
44 	int	rc;	/* return code hold area */
45 
46 	rc = _syscall(SYS_getgroups, gidsetsize, glist);
47 	if (rc > 0 && gidsetsize != 0)
48 		for (i = 0; i < rc; i++)
49 			grouplist[i] = (gid_t)glist[i];
50 	return (rc);
51 }
52