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 ATF_REQUIRE(getgroups(-1, gidset) == -1);
61 ATF_REQUIRE(errno == EINVAL);
62 }
63
64 ATF_TC(getgroups_getgid);
ATF_TC_HEAD(getgroups_getgid,tc)65 ATF_TC_HEAD(getgroups_getgid, tc)
66 {
67 atf_tc_set_md_var(tc, "descr", "Test getgid(2) from getgroups(2)");
68 }
69
ATF_TC_BODY(getgroups_getgid,tc)70 ATF_TC_BODY(getgroups_getgid, tc)
71 {
72 gid_t gidset[NGROUPS_MAX];
73 gid_t gid = getgid();
74 int i, n;
75
76 /*
77 * Check that getgid(2) is found from
78 * the GIDs returned by getgroups(2).
79 */
80 n = getgroups(NGROUPS_MAX, gidset);
81
82 for (i = 0; i < n; i++) {
83
84 if (gidset[i] == gid)
85 return;
86 }
87
88 atf_tc_fail("getgid(2) not found from getgroups(2)");
89 }
90
91 ATF_TC(getgroups_setgid);
ATF_TC_HEAD(getgroups_setgid,tc)92 ATF_TC_HEAD(getgroups_setgid, tc)
93 {
94 atf_tc_set_md_var(tc, "descr", "Test setgid(2) from getgroups(2)");
95 atf_tc_set_md_var(tc, "require.user", "root");
96 }
97
ATF_TC_BODY(getgroups_setgid,tc)98 ATF_TC_BODY(getgroups_setgid, tc)
99 {
100 gid_t gidset[NGROUPS_MAX];
101 int i, n, rv, sta;
102 pid_t pid;
103
104 /*
105 * Check that we can setgid(2)
106 * to the returned group IDs.
107 */
108 n = getgroups(NGROUPS_MAX, gidset);
109 ATF_REQUIRE(n >= 0);
110
111 for (i = 0; i < n; i++) {
112
113 pid = fork();
114 ATF_REQUIRE(pid >= 0);
115
116 if (pid == 0) {
117
118 rv = setgid(gidset[i]);
119
120 if (rv != 0)
121 _exit(EXIT_FAILURE);
122
123 _exit(EXIT_SUCCESS);
124 }
125
126 (void)wait(&sta);
127
128 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
129 atf_tc_fail("getgroups(2) is inconsistent");
130 }
131 }
132
133 ATF_TC(getgroups_zero);
ATF_TC_HEAD(getgroups_zero,tc)134 ATF_TC_HEAD(getgroups_zero, tc)
135 {
136 atf_tc_set_md_var(tc, "descr", "Test getgroups(2) with zero param");
137 }
138
ATF_TC_BODY(getgroups_zero,tc)139 ATF_TC_BODY(getgroups_zero, tc)
140 {
141 const gid_t val = 123456789;
142 gid_t gidset[NGROUPS_MAX];
143 size_t i;
144
145 /*
146 * If the first parameter is zero, the number
147 * of groups should be returned but the supplied
148 * buffer should remain intact.
149 */
150 for (i = 0; i < __arraycount(gidset); i++)
151 gidset[i] = val;
152
153 ATF_REQUIRE(getgroups(0, gidset) >= 0);
154
155 for (i = 0; i < __arraycount(gidset); i++) {
156
157 if (gidset[i] != val)
158 atf_tc_fail("getgroups(2) modified the buffer");
159 }
160 }
161
ATF_TP_ADD_TCS(tp)162 ATF_TP_ADD_TCS(tp)
163 {
164
165 ATF_TP_ADD_TC(tp, getgroups_err);
166 ATF_TP_ADD_TC(tp, getgroups_getgid);
167 ATF_TP_ADD_TC(tp, getgroups_setgid);
168 ATF_TP_ADD_TC(tp, getgroups_zero);
169
170 return atf_no_error();
171 }
172