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
43 ATF_TC(getgroups_err);
ATF_TC_HEAD(getgroups_err,tc)44 ATF_TC_HEAD(getgroups_err, tc)
45 {
46 atf_tc_set_md_var(tc, "descr", "Test errors in getgroups(2)");
47 }
48
ATF_TC_BODY(getgroups_err,tc)49 ATF_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
67 ATF_TC(getgroups_getgid);
ATF_TC_HEAD(getgroups_getgid,tc)68 ATF_TC_HEAD(getgroups_getgid, tc)
69 {
70 atf_tc_set_md_var(tc, "descr", "Test getgid(2) from getgroups(2)");
71 }
72
ATF_TC_BODY(getgroups_getgid,tc)73 ATF_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
94 ATF_TC(getgroups_setgid);
ATF_TC_HEAD(getgroups_setgid,tc)95 ATF_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
ATF_TC_BODY(getgroups_setgid,tc)101 ATF_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
136 ATF_TC(getgroups_zero);
ATF_TC_HEAD(getgroups_zero,tc)137 ATF_TC_HEAD(getgroups_zero, tc)
138 {
139 atf_tc_set_md_var(tc, "descr", "Test getgroups(2) with zero param");
140 }
141
ATF_TC_BODY(getgroups_zero,tc)142 ATF_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
ATF_TP_ADD_TCS(tp)165 ATF_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