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); 44 ATF_TC_HEAD(getgroups_err, tc) 45 { 46 atf_tc_set_md_var(tc, "descr", "Test errors in getgroups(2)"); 47 } 48 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); 65 ATF_TC_HEAD(getgroups_getgid, tc) 66 { 67 atf_tc_set_md_var(tc, "descr", "Test getgid(2) from getgroups(2)"); 68 } 69 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); 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 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); 134 ATF_TC_HEAD(getgroups_zero, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "Test getgroups(2) with zero param"); 137 } 138 139 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 } 161 162 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