1 /* $NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2008, 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe and 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 32 #include <sys/cdefs.h> 33 __COPYRIGHT("@(#) Copyright (c) 2008\ 34 The NetBSD Foundation, inc. All rights reserved."); 35 __RCSID("$NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $"); 36 37 #include <sys/stat.h> 38 #include <sys/wait.h> 39 40 #include <atf-c.h> 41 #include <errno.h> 42 #include <fcntl.h> 43 #include <limits.h> 44 #include <pwd.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 ATF_TC(mkdir_err); 51 ATF_TC_HEAD(mkdir_err, tc) 52 { 53 atf_tc_set_md_var(tc, "descr", "Checks errors from mkdir(2)"); 54 } 55 56 ATF_TC_BODY(mkdir_err, tc) 57 { 58 char buf[PATH_MAX + 1]; 59 int fd; 60 61 (void)memset(buf, 'x', sizeof(buf)); 62 63 fd = open("/etc", O_RDONLY); 64 65 if (fd >= 0) { 66 67 (void)close(fd); 68 69 errno = 0; 70 ATF_REQUIRE_ERRNO(EEXIST, mkdir("/etc", 0500) == -1); 71 } 72 73 errno = 0; 74 ATF_REQUIRE_ERRNO(EFAULT, mkdir((void *)-1, 0500) == -1); 75 76 errno = 0; 77 ATF_REQUIRE_ERRNO(ENAMETOOLONG, mkdir(buf, 0500) == -1); 78 79 errno = 0; 80 ATF_REQUIRE_ERRNO(ENOENT, mkdir("/a/b/c/d/e/f/g/h/i/j/k", 0500) == -1); 81 } 82 83 ATF_TC_WITH_CLEANUP(mkdir_perm); 84 ATF_TC_HEAD(mkdir_perm, tc) 85 { 86 atf_tc_set_md_var(tc, "descr", "Checks permissions with mkdir(2)"); 87 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 88 } 89 90 ATF_TC_BODY(mkdir_perm, tc) 91 { 92 errno = 0; 93 ATF_REQUIRE_ERRNO(EACCES, mkdir("/usr/__nonexistent__", 0500) == -1); 94 } 95 96 ATF_TC_CLEANUP(mkdir_perm, tc) 97 { 98 (void)rmdir("/usr/__nonexistent__"); 99 } 100 101 ATF_TC_WITH_CLEANUP(mkdir_mode); 102 ATF_TC_HEAD(mkdir_mode, tc) 103 { 104 atf_tc_set_md_var(tc, "descr", "Test that UIDs and GIDs are right " 105 "for a directory created with mkdir(2)"); 106 atf_tc_set_md_var(tc, "require.user", "root"); 107 } 108 109 ATF_TC_BODY(mkdir_mode, tc) 110 { 111 static const char *path = "/tmp/mkdir"; 112 struct stat st_a, st_b; 113 struct passwd *pw; 114 pid_t pid; 115 int sta; 116 117 (void)memset(&st_a, 0, sizeof(struct stat)); 118 (void)memset(&st_b, 0, sizeof(struct stat)); 119 120 pw = getpwnam("nobody"); 121 122 ATF_REQUIRE(pw != NULL); 123 ATF_REQUIRE(stat("/tmp", &st_a) == 0); 124 125 pid = fork(); 126 ATF_REQUIRE(pid >= 0); 127 128 if (pid == 0) { 129 130 if (setuid(pw->pw_uid) != 0) 131 _exit(EXIT_FAILURE); 132 133 if (mkdir(path, 0500) != 0) 134 _exit(EXIT_FAILURE); 135 136 _exit(EXIT_SUCCESS); 137 } 138 139 (void)sleep(1); 140 (void)wait(&sta); 141 142 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 143 atf_tc_fail("failed to create '%s'", path); 144 145 ATF_REQUIRE(stat(path, &st_b) == 0); 146 ATF_REQUIRE(rmdir(path) == 0); 147 148 /* 149 * The directory's owner ID should be set to the 150 * effective UID, whereas the group ID should be 151 * set to that of the parent directory. 152 */ 153 if (st_b.st_uid != pw->pw_uid) 154 atf_tc_fail("invalid UID for '%s'", path); 155 156 if (st_b.st_gid != st_a.st_gid) 157 atf_tc_fail("GID did not follow the parent directory"); 158 } 159 160 ATF_TC_CLEANUP(mkdir_mode, tc) 161 { 162 (void)rmdir("/tmp/mkdir"); 163 } 164 165 ATF_TC(mkdir_trail); 166 ATF_TC_HEAD(mkdir_trail, tc) 167 { 168 atf_tc_set_md_var(tc, "descr", "Checks mkdir(2) for trailing slashes"); 169 } 170 171 ATF_TC_BODY(mkdir_trail, tc) 172 { 173 const char *tests[] = { 174 /* 175 * IEEE 1003.1 second ed. 2.2.2.78: 176 * 177 * If the pathname refers to a directory, it may also have 178 * one or more trailing slashes. Multiple successive slashes 179 * are considered to be the same as one slash. 180 */ 181 "dir1/", 182 "dir2//", 183 184 NULL, 185 }; 186 187 const char **test; 188 189 for (test = &tests[0]; *test != NULL; ++test) { 190 191 (void)printf("Checking \"%s\"\n", *test); 192 (void)rmdir(*test); 193 194 ATF_REQUIRE(mkdir(*test, 0777) == 0); 195 ATF_REQUIRE(rename(*test, "foo") == 0); 196 ATF_REQUIRE(rename("foo/", *test) == 0); 197 ATF_REQUIRE(rmdir(*test) == 0); 198 } 199 } 200 201 ATF_TP_ADD_TCS(tp) 202 { 203 204 ATF_TP_ADD_TC(tp, mkdir_err); 205 ATF_TP_ADD_TC(tp, mkdir_perm); 206 ATF_TP_ADD_TC(tp, mkdir_mode); 207 ATF_TP_ADD_TC(tp, mkdir_trail); 208 209 return atf_no_error(); 210 } 211