Merge from vendor branch BZIP:
[dragonfly.git] / lib / libc / gen / initgroups.c
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1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#)initgroups.c 8.1 (Berkeley) 6/4/93
34 * $FreeBSD: src/lib/libc/gen/initgroups.c,v 1.3.8.1 2001/12/19 15:49:35 tobez Exp $
b0e25abd 35 * $DragonFly: src/lib/libc/gen/initgroups.c,v 1.6 2005/11/19 22:32:53 swildner Exp $
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36 */
37
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38#include <sys/param.h>
39
40#include <stdio.h>
41#include <err.h>
42#include <unistd.h>
43
44int
0f52d283 45initgroups(const char *uname, int agroup)
984263bc 46{
b0e25abd 47 int ngroups;
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48 /*
49 * Provide space for one group more than NGROUPS to allow
50 * setgroups to fail and set errno.
51 */
52 gid_t groups[NGROUPS + 1];
984263bc 53
c0b1ae86 54 ngroups = NGROUPS + 1;
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55 getgrouplist(uname, agroup, groups, &ngroups);
56 return (setgroups(ngroups, groups));
57}