1 /* $OpenBSD: t_mkdir.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $ */ 2 /* $NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $ */ 3 4 /*- 5 * Copyright (c) 2008, 2011 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe and 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/cdefs.h> 36 __COPYRIGHT("@(#) Copyright (c) 2008\ 37 The NetBSD Foundation, inc. All rights reserved."); 38 __RCSID("$NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $"); 39 40 #include <sys/stat.h> 41 #include <sys/wait.h> 42 43 #include "atf-c.h" 44 #include <errno.h> 45 #include <fcntl.h> 46 #include <limits.h> 47 #include <pwd.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 53 ATF_TC(mkdir_err); 54 ATF_TC_HEAD(mkdir_err, tc) 55 { 56 atf_tc_set_md_var(tc, "descr", "Checks errors from mkdir(2)"); 57 } 58 59 ATF_TC_BODY(mkdir_err, tc) 60 { 61 char buf[PATH_MAX + 1]; 62 int fd; 63 64 (void)memset(buf, 'x', sizeof(buf)); 65 66 fd = open("/etc", O_RDONLY); 67 68 if (fd >= 0) { 69 70 (void)close(fd); 71 72 errno = 0; 73 ATF_REQUIRE_ERRNO(EEXIST, mkdir("/etc", 0500) == -1); 74 } 75 76 errno = 0; 77 ATF_REQUIRE_ERRNO(EFAULT, mkdir((void *)-1, 0500) == -1); 78 79 errno = 0; 80 ATF_REQUIRE_ERRNO(ENAMETOOLONG, mkdir(buf, 0500) == -1); 81 82 errno = 0; 83 ATF_REQUIRE_ERRNO(ENOENT, mkdir("/a/b/c/d/e/f/g/h/i/j/k", 0500) == -1); 84 } 85 86 ATF_TC_WITH_CLEANUP(mkdir_perm); 87 ATF_TC_HEAD(mkdir_perm, tc) 88 { 89 atf_tc_set_md_var(tc, "descr", "Checks permissions with mkdir(2)"); 90 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 91 } 92 93 ATF_TC_BODY(mkdir_perm, tc) 94 { 95 errno = 0; 96 ATF_REQUIRE_ERRNO(EACCES, mkdir("/usr/__nonexistent__", 0500) == -1); 97 } 98 99 ATF_TC_CLEANUP(mkdir_perm, tc) 100 { 101 (void)rmdir("/usr/__nonexistent__"); 102 } 103 104 ATF_TC_WITH_CLEANUP(mkdir_mode); 105 ATF_TC_HEAD(mkdir_mode, tc) 106 { 107 atf_tc_set_md_var(tc, "descr", "Test that UIDs and GIDs are right " 108 "for a directory created with mkdir(2)"); 109 atf_tc_set_md_var(tc, "require.user", "root"); 110 } 111 112 ATF_TC_BODY(mkdir_mode, tc) 113 { 114 static const char *path = "/tmp/mkdir"; 115 struct stat st_a, st_b; 116 struct passwd *pw; 117 pid_t pid; 118 int sta; 119 120 (void)memset(&st_a, 0, sizeof(struct stat)); 121 (void)memset(&st_b, 0, sizeof(struct stat)); 122 123 pw = getpwnam("nobody"); 124 125 ATF_REQUIRE(pw != NULL); 126 ATF_REQUIRE(stat("/tmp", &st_a) == 0); 127 128 pid = fork(); 129 ATF_REQUIRE(pid >= 0); 130 131 if (pid == 0) { 132 133 if (setuid(pw->pw_uid) != 0) 134 _exit(EXIT_FAILURE); 135 136 if (mkdir(path, 0500) != 0) 137 _exit(EXIT_FAILURE); 138 139 _exit(EXIT_SUCCESS); 140 } 141 142 (void)sleep(1); 143 (void)wait(&sta); 144 145 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 146 atf_tc_fail("failed to create '%s'", path); 147 148 ATF_REQUIRE(stat(path, &st_b) == 0); 149 ATF_REQUIRE(rmdir(path) == 0); 150 151 /* 152 * The directory's owner ID should be set to the 153 * effective UID, whereas the group ID should be 154 * set to that of the parent directory. 155 */ 156 if (st_b.st_uid != pw->pw_uid) 157 atf_tc_fail("invalid UID for '%s'", path); 158 159 if (st_b.st_gid != st_a.st_gid) 160 atf_tc_fail("GID did not follow the parent directory"); 161 } 162 163 ATF_TC_CLEANUP(mkdir_mode, tc) 164 { 165 (void)rmdir("/tmp/mkdir"); 166 } 167 168 ATF_TC(mkdir_trail); 169 ATF_TC_HEAD(mkdir_trail, tc) 170 { 171 atf_tc_set_md_var(tc, "descr", "Checks mkdir(2) for trailing slashes"); 172 } 173 174 ATF_TC_BODY(mkdir_trail, tc) 175 { 176 const char *tests[] = { 177 /* 178 * IEEE 1003.1 second ed. 2.2.2.78: 179 * 180 * If the pathname refers to a directory, it may also have 181 * one or more trailing slashes. Multiple successive slashes 182 * are considered to be the same as one slash. 183 */ 184 "dir1/", 185 "dir2//", 186 187 NULL, 188 }; 189 190 const char **test; 191 192 for (test = &tests[0]; *test != NULL; ++test) { 193 194 (void)printf("Checking \"%s\"\n", *test); 195 (void)rmdir(*test); 196 197 ATF_REQUIRE(mkdir(*test, 0777) == 0); 198 ATF_REQUIRE(rename(*test, "foo") == 0); 199 ATF_REQUIRE(rename("foo/", *test) == 0); 200 ATF_REQUIRE(rmdir(*test) == 0); 201 } 202 } 203 204 ATF_TP_ADD_TCS(tp) 205 { 206 207 ATF_TP_ADD_TC(tp, mkdir_err); 208 ATF_TP_ADD_TC(tp, mkdir_perm); 209 ATF_TP_ADD_TC(tp, mkdir_mode); 210 ATF_TP_ADD_TC(tp, mkdir_trail); 211 212 return atf_no_error(); 213 } 214