1 /* $OpenBSD: t_getgroups.c,v 1.3 2021/12/13 16:56:48 deraadt Exp $ */ 2 /* $NetBSD: t_getgroups.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */ 3 4 /*- 5 * Copyright (c) 2011 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jukka Ruohonen. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "macros.h" 34 35 #include <sys/wait.h> 36 37 #include "atf-c.h" 38 #include <errno.h> 39 #include <limits.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 ATF_TC(getgroups_err); 45 ATF_TC_HEAD(getgroups_err, tc) 46 { 47 atf_tc_set_md_var(tc, "descr", "Test errors in getgroups(2)"); 48 } 49 50 ATF_TC_BODY(getgroups_err, tc) 51 { 52 gid_t gidset[NGROUPS_MAX]; 53 54 errno = 0; 55 56 #if __OpenBSD__ 57 ATF_REQUIRE(getgroups(NGROUPS_MAX, (gid_t *)-1) == -1); 58 #else 59 ATF_REQUIRE(getgroups(10, (gid_t *)-1) == -1); 60 #endif 61 ATF_REQUIRE(errno == EFAULT); 62 63 errno = 0; 64 65 ATF_REQUIRE(getgroups(-1, gidset) == -1); 66 ATF_REQUIRE(errno == EINVAL); 67 } 68 69 ATF_TC(getgroups_getgid); 70 ATF_TC_HEAD(getgroups_getgid, tc) 71 { 72 atf_tc_set_md_var(tc, "descr", "Test getgid(2) from getgroups(2)"); 73 } 74 75 ATF_TC_BODY(getgroups_getgid, tc) 76 { 77 gid_t gidset[NGROUPS_MAX]; 78 gid_t gid = getgid(); 79 int i, n; 80 81 /* 82 * Check that getgid(2) is found from 83 * the GIDs returned by getgroups(2). 84 */ 85 n = getgroups(NGROUPS_MAX, gidset); 86 87 for (i = 0; i < n; i++) { 88 89 if (gidset[i] == gid) 90 return; 91 } 92 93 atf_tc_fail("getgid(2) not found from getgroups(2)"); 94 } 95 96 ATF_TC(getgroups_setgid); 97 ATF_TC_HEAD(getgroups_setgid, tc) 98 { 99 atf_tc_set_md_var(tc, "descr", "Test setgid(2) from getgroups(2)"); 100 atf_tc_set_md_var(tc, "require.user", "root"); 101 } 102 103 ATF_TC_BODY(getgroups_setgid, tc) 104 { 105 gid_t gidset[NGROUPS_MAX]; 106 int i, n, rv, sta; 107 pid_t pid; 108 109 /* 110 * Check that we can setgid(2) 111 * to the returned group IDs. 112 */ 113 n = getgroups(NGROUPS_MAX, gidset); 114 ATF_REQUIRE(n >= 0); 115 116 for (i = 0; i < n; i++) { 117 118 pid = fork(); 119 ATF_REQUIRE(pid >= 0); 120 121 if (pid == 0) { 122 123 rv = setgid(gidset[i]); 124 125 if (rv != 0) 126 _exit(EXIT_FAILURE); 127 128 _exit(EXIT_SUCCESS); 129 } 130 131 (void)wait(&sta); 132 133 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 134 atf_tc_fail("getgroups(2) is inconsistent"); 135 } 136 } 137 138 ATF_TC(getgroups_zero); 139 ATF_TC_HEAD(getgroups_zero, tc) 140 { 141 atf_tc_set_md_var(tc, "descr", "Test getgroups(2) with zero param"); 142 } 143 144 ATF_TC_BODY(getgroups_zero, tc) 145 { 146 const gid_t val = 123456789; 147 gid_t gidset[NGROUPS_MAX]; 148 size_t i; 149 150 /* 151 * If the first parameter is zero, the number 152 * of groups should be returned but the supplied 153 * buffer should remain intact. 154 */ 155 for (i = 0; i < __arraycount(gidset); i++) 156 gidset[i] = val; 157 158 ATF_REQUIRE(getgroups(0, gidset) >= 0); 159 160 for (i = 0; i < __arraycount(gidset); i++) { 161 162 if (gidset[i] != val) 163 atf_tc_fail("getgroups(2) modified the buffer"); 164 } 165 } 166 167 ATF_TP_ADD_TCS(tp) 168 { 169 170 ATF_TP_ADD_TC(tp, getgroups_err); 171 ATF_TP_ADD_TC(tp, getgroups_getgid); 172 ATF_TP_ADD_TC(tp, getgroups_setgid); 173 ATF_TP_ADD_TC(tp, getgroups_zero); 174 175 return atf_no_error(); 176 } 177