1/* $NetBSD: t_getgroups.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
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#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_getgroups.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
33
34#include <sys/wait.h>
35
36#include <atf-c.h>
37#include <errno.h>
38#include <limits.h>
39#include <stdlib.h>
40#include <string.h>
41#include <unistd.h>
42
43ATF_TC(getgroups_err);
44ATF_TC_HEAD(getgroups_err, tc)
45{
46	atf_tc_set_md_var(tc, "descr", "Test errors in getgroups(2)");
47}
48
49ATF_TC_BODY(getgroups_err, tc)
50{
51	gid_t gidset[NGROUPS_MAX];
52
53	errno = 0;
54
55	ATF_REQUIRE(getgroups(10, (gid_t *)-1) == -1);
56	ATF_REQUIRE(errno == EFAULT);
57
58	errno = 0;
59
60#ifdef __FreeBSD__
61	atf_tc_expect_fail("Reported as kern/189941");
62#endif
63	ATF_REQUIRE(getgroups(-1, gidset) == -1);
64	ATF_REQUIRE(errno == EINVAL);
65}
66
67ATF_TC(getgroups_getgid);
68ATF_TC_HEAD(getgroups_getgid, tc)
69{
70	atf_tc_set_md_var(tc, "descr", "Test getgid(2) from getgroups(2)");
71}
72
73ATF_TC_BODY(getgroups_getgid, tc)
74{
75	gid_t gidset[NGROUPS_MAX];
76	gid_t gid = getgid();
77	int i, n;
78
79	/*
80	 * Check that getgid(2) is found from
81	 * the GIDs returned by getgroups(2).
82	 */
83	n = getgroups(NGROUPS_MAX, gidset);
84
85	for (i = 0; i < n; i++) {
86
87		if (gidset[i] == gid)
88			return;
89	}
90
91	atf_tc_fail("getgid(2) not found from getgroups(2)");
92}
93
94ATF_TC(getgroups_setgid);
95ATF_TC_HEAD(getgroups_setgid, tc)
96{
97	atf_tc_set_md_var(tc, "descr", "Test setgid(2) from getgroups(2)");
98	atf_tc_set_md_var(tc, "require.user", "root");
99}
100
101ATF_TC_BODY(getgroups_setgid, tc)
102{
103	gid_t gidset[NGROUPS_MAX];
104	int i, n, rv, sta;
105	pid_t pid;
106
107	/*
108	 * Check that we can setgid(2)
109	 * to the returned group IDs.
110	 */
111	n = getgroups(NGROUPS_MAX, gidset);
112	ATF_REQUIRE(n >= 0);
113
114	for (i = 0; i < n; i++) {
115
116		pid = fork();
117		ATF_REQUIRE(pid >= 0);
118
119		if (pid == 0) {
120
121			rv = setgid(gidset[i]);
122
123			if (rv != 0)
124				_exit(EXIT_FAILURE);
125
126			_exit(EXIT_SUCCESS);
127		}
128
129		(void)wait(&sta);
130
131		if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
132			atf_tc_fail("getgroups(2) is inconsistent");
133	}
134}
135
136ATF_TC(getgroups_zero);
137ATF_TC_HEAD(getgroups_zero, tc)
138{
139	atf_tc_set_md_var(tc, "descr", "Test getgroups(2) with zero param");
140}
141
142ATF_TC_BODY(getgroups_zero, tc)
143{
144	const gid_t val = 123456789;
145	gid_t gidset[NGROUPS_MAX];
146	size_t i;
147
148	/*
149	 * If the first parameter is zero, the number
150	 * of groups should be returned but the supplied
151	 * buffer should remain intact.
152	 */
153	for (i = 0; i < __arraycount(gidset); i++)
154		gidset[i] = val;
155
156	ATF_REQUIRE(getgroups(0, gidset) >= 0);
157
158	for (i = 0; i < __arraycount(gidset); i++) {
159
160		if (gidset[i] != val)
161			atf_tc_fail("getgroups(2) modified the buffer");
162	}
163}
164
165ATF_TP_ADD_TCS(tp)
166{
167
168	ATF_TP_ADD_TC(tp, getgroups_err);
169	ATF_TP_ADD_TC(tp, getgroups_getgid);
170	ATF_TP_ADD_TC(tp, getgroups_setgid);
171	ATF_TP_ADD_TC(tp, getgroups_zero);
172
173	return atf_no_error();
174}
175