1 /* $NetBSD: t_mknod.c,v 1.2 2012/03/18 07:00:52 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_mknod.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $"); 33 34 #include <sys/stat.h> 35 36 #include <atf-c.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <limits.h> 40 #include <paths.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <unistd.h> 44 45 static char path[] = "node"; 46 47 ATF_TC_WITH_CLEANUP(mknod_err); 48 ATF_TC_HEAD(mknod_err, tc) 49 { 50 atf_tc_set_md_var(tc, "descr", 51 "Test error conditions of mknod(2) (PR kern/45111)"); 52 atf_tc_set_md_var(tc, "require.user", "root"); 53 } 54 55 ATF_TC_BODY(mknod_err, tc) 56 { 57 char buf[PATH_MAX + 1]; 58 59 (void)memset(buf, 'x', sizeof(buf)); 60 61 #ifndef __FreeBSD__ 62 /* 63 * As of FreeBSD 6.0 device nodes may be created in regular file systems but 64 * such nodes cannot be used to access devices. As a result an invalid dev 65 * argument is unchecked. 66 */ 67 errno = 0; 68 ATF_REQUIRE_ERRNO(EINVAL, mknod(path, S_IFCHR, -1) == -1); 69 #endif 70 71 errno = 0; 72 ATF_REQUIRE_ERRNO(ENAMETOOLONG, mknod(buf, S_IFCHR, 0) == -1); 73 74 errno = 0; 75 ATF_REQUIRE_ERRNO(EFAULT, mknod((char *)-1, S_IFCHR, 0) == -1); 76 77 errno = 0; 78 ATF_REQUIRE_ERRNO(ENOENT, mknod("/a/b/c/d/e/f/g", S_IFCHR, 0) == -1); 79 } 80 81 ATF_TC_CLEANUP(mknod_err, tc) 82 { 83 (void)unlink(path); 84 } 85 86 ATF_TC_WITH_CLEANUP(mknod_exist); 87 ATF_TC_HEAD(mknod_exist, tc) 88 { 89 atf_tc_set_md_var(tc, "descr", "Test EEXIST from mknod(2)"); 90 atf_tc_set_md_var(tc, "require.user", "root"); 91 } 92 93 ATF_TC_BODY(mknod_exist, tc) 94 { 95 int fd; 96 97 fd = open("/etc/passwd", O_RDONLY); 98 99 if (fd >= 0) { 100 101 (void)close(fd); 102 103 errno = 0; 104 ATF_REQUIRE_ERRNO(EEXIST, 105 mknod("/etc/passwd", S_IFCHR, 0) == -1); 106 } 107 108 ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0); 109 110 errno = 0; 111 ATF_REQUIRE_ERRNO(EEXIST, mknod(path, S_IFCHR, 0) == -1); 112 113 ATF_REQUIRE(unlink(path) == 0); 114 } 115 116 ATF_TC_CLEANUP(mknod_exist, tc) 117 { 118 (void)unlink(path); 119 } 120 121 ATF_TC_WITH_CLEANUP(mknod_perm); 122 ATF_TC_HEAD(mknod_perm, tc) 123 { 124 atf_tc_set_md_var(tc, "descr", "Test permissions of mknod(2)"); 125 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 126 } 127 128 ATF_TC_BODY(mknod_perm, tc) 129 { 130 131 errno = 0; 132 ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFCHR, 0) == -1); 133 134 errno = 0; 135 ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFBLK, 0) == -1); 136 } 137 138 ATF_TC_CLEANUP(mknod_perm, tc) 139 { 140 (void)unlink(path); 141 } 142 143 ATF_TC_WITH_CLEANUP(mknod_stat); 144 ATF_TC_HEAD(mknod_stat, tc) 145 { 146 atf_tc_set_md_var(tc, "descr", "A basic test of mknod(2)"); 147 atf_tc_set_md_var(tc, "require.user", "root"); 148 } 149 150 ATF_TC_BODY(mknod_stat, tc) 151 { 152 struct stat st; 153 154 (void)memset(&st, 0, sizeof(struct stat)); 155 156 ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0); 157 ATF_REQUIRE(stat(path, &st) == 0); 158 159 if (S_ISCHR(st.st_mode) == 0) 160 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFCHR)"); 161 162 ATF_REQUIRE(unlink(path) == 0); 163 164 (void)memset(&st, 0, sizeof(struct stat)); 165 166 ATF_REQUIRE(mknod(path, S_IFBLK, 0) == 0); 167 ATF_REQUIRE(stat(path, &st) == 0); 168 169 if (S_ISBLK(st.st_mode) == 0) 170 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFBLK)"); 171 172 ATF_REQUIRE(unlink(path) == 0); 173 174 (void)memset(&st, 0, sizeof(struct stat)); 175 176 #ifdef __FreeBSD__ 177 atf_tc_expect_fail("mknod does not allow S_IFREG"); 178 #endif 179 ATF_REQUIRE(mknod(path, S_IFREG, 0) == 0); 180 ATF_REQUIRE(stat(path, &st) == 0); 181 182 if (S_ISREG(st.st_mode) == 0) 183 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFREG)"); 184 185 ATF_REQUIRE(unlink(path) == 0); 186 } 187 188 ATF_TC_CLEANUP(mknod_stat, tc) 189 { 190 (void)unlink(path); 191 } 192 193 ATF_TP_ADD_TCS(tp) 194 { 195 196 ATF_TP_ADD_TC(tp, mknod_err); 197 ATF_TP_ADD_TC(tp, mknod_exist); 198 ATF_TP_ADD_TC(tp, mknod_perm); 199 ATF_TP_ADD_TC(tp, mknod_stat); 200 201 return atf_no_error(); 202 } 203