1 /* $NetBSD: t_access.c,v 2.2 2017/01/10 22:36:29 christos 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_access.c,v 1.2 2017/01/10 22:36:29 christos Exp $"); 33 34 #ifdef __FreeBSD__ 35 #include <sys/param.h> /* For __FreeBSD_version */ 36 #endif 37 38 #include <atf-c.h> 39 40 #include <sys/stat.h> 41 #include <sys/sysctl.h> 42 43 #include <errno.h> 44 #include <fcntl.h> 45 #include <limits.h> 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <unistd.h> 50 51 static const char path[] = "access"; 52 static const int mode[4] = { R_OK, W_OK, X_OK, F_OK }; 53 54 ATF_TC_WITH_CLEANUP(access_access); 55 ATF_TC_HEAD(access_access, tc) 56 { 57 atf_tc_set_md_var(tc, "descr", "Test access(2) for EACCES"); 58 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 59 } 60 61 ATF_TC_BODY(access_access, tc) 62 { 63 const int perm[3] = { 0200, 0400, 0000 }; 64 size_t i; 65 int fd; 66 67 fd = open(path, O_RDONLY | O_CREAT, 0600); 68 69 if (fd < 0) 70 return; 71 72 for (i = 0; i < __arraycount(mode) - 1; i++) { 73 74 ATF_REQUIRE(fchmod(fd, perm[i]) == 0); 75 76 errno = 0; 77 78 ATF_REQUIRE(access(path, mode[i]) != 0); 79 ATF_REQUIRE(errno == EACCES); 80 } 81 82 ATF_REQUIRE(close(fd) == 0); 83 } 84 85 ATF_TC_CLEANUP(access_access, tc) 86 { 87 (void)unlink(path); 88 } 89 90 ATF_TC(access_fault); 91 ATF_TC_HEAD(access_fault, tc) 92 { 93 atf_tc_set_md_var(tc, "descr", "Test access(2) for EFAULT"); 94 } 95 96 ATF_TC_BODY(access_fault, tc) 97 { 98 size_t i; 99 100 for (i = 0; i < __arraycount(mode); i++) { 101 102 errno = 0; 103 104 ATF_REQUIRE(access(NULL, mode[i]) != 0); 105 ATF_REQUIRE(errno == EFAULT); 106 107 errno = 0; 108 109 ATF_REQUIRE(access((char *)-1, mode[i]) != 0); 110 ATF_REQUIRE(errno == EFAULT); 111 } 112 } 113 114 ATF_TC(access_inval); 115 ATF_TC_HEAD(access_inval, tc) 116 { 117 atf_tc_set_md_var(tc, "descr", "Test access(2) for EINVAL"); 118 } 119 120 ATF_TC_BODY(access_inval, tc) 121 { 122 123 #if defined(__FreeBSD__) && __FreeBSD_version < 1100033 124 atf_tc_expect_fail("arguments to access aren't validated; see " 125 "bug # 181155 for more details"); 126 #endif 127 errno = 0; 128 129 ATF_REQUIRE(access("/usr", -1) != 0); 130 ATF_REQUIRE(errno == EINVAL); 131 } 132 133 ATF_TC(access_notdir); 134 ATF_TC_HEAD(access_notdir, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENOTDIR"); 137 } 138 139 ATF_TC_BODY(access_notdir, tc) 140 { 141 size_t i; 142 143 for (i = 0; i < __arraycount(mode); i++) { 144 145 errno = 0; 146 147 /* 148 * IEEE Std 1003.1-2008 about ENOTDIR: 149 * 150 * "A component of the path prefix is not a directory, 151 * or the path argument contains at least one non-<slash> 152 * character and ends with one or more trailing <slash> 153 * characters and the last pathname component names an 154 * existing file that is neither a directory nor a symbolic 155 * link to a directory." 156 */ 157 ATF_REQUIRE(access("/etc/passwd//", mode[i]) != 0); 158 ATF_REQUIRE(errno == ENOTDIR); 159 } 160 } 161 162 ATF_TC(access_notexist); 163 ATF_TC_HEAD(access_notexist, tc) 164 { 165 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENOENT"); 166 } 167 168 ATF_TC_BODY(access_notexist, tc) 169 { 170 size_t i; 171 172 for (i = 0; i < __arraycount(mode); i++) { 173 174 errno = 0; 175 176 ATF_REQUIRE(access("", mode[i]) != 0); 177 ATF_REQUIRE(errno == ENOENT); 178 } 179 } 180 181 ATF_TC(access_text); 182 ATF_TC_HEAD(access_text, tc) 183 { 184 atf_tc_set_md_var(tc, "descr", "Test access(2) for ETXTBSY"); 185 } 186 187 ATF_TC_BODY(access_text, tc) 188 { 189 char path[PATH_MAX]; 190 size_t sz; 191 int fd, name[4]; 192 193 name[0] = CTL_KERN; 194 name[1] = KERN_PROC; 195 name[2] = KERN_PROC_PATHNAME; 196 name[3] = -1; 197 198 sz = sizeof(path); 199 ATF_REQUIRE(sysctl(name, 4, path, &sz, NULL, 0) == 0); 200 201 fd = open(path, O_RDONLY); 202 ATF_REQUIRE(fd >= 0); 203 204 ATF_REQUIRE(access(path, W_OK) != 0); 205 ATF_REQUIRE(errno == ETXTBSY); 206 207 ATF_REQUIRE(faccessat(AT_FDCWD, path, W_OK, 0) != 0); 208 ATF_REQUIRE(errno == ETXTBSY); 209 210 ATF_REQUIRE(close(fd) == 0); 211 } 212 213 ATF_TC(access_toolong); 214 ATF_TC_HEAD(access_toolong, tc) 215 { 216 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENAMETOOLONG"); 217 } 218 219 ATF_TC_BODY(access_toolong, tc) 220 { 221 char *buf; 222 size_t i; 223 224 buf = malloc(PATH_MAX); 225 226 if (buf == NULL) 227 return; 228 229 for (i = 0; i < PATH_MAX; i++) 230 buf[i] = 'x'; 231 232 for (i = 0; i < __arraycount(mode); i++) { 233 234 errno = 0; 235 236 ATF_REQUIRE(access(buf, mode[i]) != 0); 237 ATF_REQUIRE(errno == ENAMETOOLONG); 238 } 239 240 free(buf); 241 } 242 243 ATF_TP_ADD_TCS(tp) 244 { 245 246 ATF_TP_ADD_TC(tp, access_access); 247 ATF_TP_ADD_TC(tp, access_fault); 248 ATF_TP_ADD_TC(tp, access_inval); 249 ATF_TP_ADD_TC(tp, access_notdir); 250 ATF_TP_ADD_TC(tp, access_notexist); 251 ATF_TP_ADD_TC(tp, access_text); 252 ATF_TP_ADD_TC(tp, access_toolong); 253 254 return atf_no_error(); 255 } 256