1 /* $NetBSD: t_linkat.c,v 1.1 2012/11/18 17:41:54 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus. 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_linkat.c,v 1.1 2012/11/18 17:41:54 manu Exp $"); 33 34 #include <atf-c.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <limits.h> 38 #include <paths.h> 39 #include <stdio.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 45 #define ODIR "olddir" 46 #define NDIR "newdir" 47 #define FILE "olddir/old" 48 #define BASEFILE "old" 49 #define RELFILE "../olddir/old" 50 #define TARGET "newdir/new" 51 #define BASETARGET "new" 52 #define LINK "olddir/symlink" 53 #define BASELINK "symlink" 54 #define FILEERR "olddir/olderr" 55 56 ATF_TC_WITH_CLEANUP(linkat_fd); 57 ATF_TC_HEAD(linkat_fd, tc) 58 { 59 atf_tc_set_md_var(tc, "descr", "See that linkat works with fd"); 60 } 61 62 ATF_TC_BODY(linkat_fd, tc) 63 { 64 int ofd, nfd, fd; 65 struct stat ost, nst; 66 67 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 68 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 69 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 70 ATF_REQUIRE(close(fd) != -1); 71 72 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 73 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 74 ATF_REQUIRE(linkat(ofd, BASEFILE, nfd, BASETARGET, 0) == 0); 75 ATF_REQUIRE(close(ofd) == 0); 76 ATF_REQUIRE(close(nfd) == 0); 77 78 ATF_REQUIRE(stat(FILE, &ost) == 0); 79 ATF_REQUIRE(stat(TARGET, &nst) == 0); 80 ATF_REQUIRE(ost.st_ino == nst.st_ino); 81 } 82 83 ATF_TC_CLEANUP(linkat_fd, tc) 84 { 85 (void)unlink(FILE); 86 (void)unlink(TARGET); 87 (void)rmdir(NDIR); 88 (void)rmdir(ODIR); 89 } 90 91 92 ATF_TC_WITH_CLEANUP(linkat_fdcwd); 93 ATF_TC_HEAD(linkat_fdcwd, tc) 94 { 95 atf_tc_set_md_var(tc, "descr", 96 "See that linkat works with fd as AT_FDCWD"); 97 } 98 99 ATF_TC_BODY(linkat_fdcwd, tc) 100 { 101 int fd; 102 struct stat ost, nst; 103 104 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 105 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 106 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 107 ATF_REQUIRE(close(fd) != -1); 108 109 ATF_REQUIRE(linkat(AT_FDCWD, FILE, AT_FDCWD, TARGET, 0) == 0); 110 111 ATF_REQUIRE(stat(FILE, &ost) == 0); 112 ATF_REQUIRE(stat(TARGET, &nst) == 0); 113 ATF_REQUIRE(ost.st_ino == nst.st_ino); 114 } 115 116 ATF_TC_CLEANUP(linkat_fdcwd, tc) 117 { 118 (void)unlink(FILE); 119 (void)unlink(TARGET); 120 (void)rmdir(NDIR); 121 (void)rmdir(ODIR); 122 } 123 124 ATF_TC_WITH_CLEANUP(linkat_fdcwderr); 125 ATF_TC_HEAD(linkat_fdcwderr, tc) 126 { 127 atf_tc_set_md_var(tc, "descr", 128 "See that linkat fails with fd as AT_FDCWD and bad path"); 129 } 130 131 ATF_TC_BODY(linkat_fdcwderr, tc) 132 { 133 int fd; 134 135 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 136 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 137 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 138 ATF_REQUIRE(close(fd) != -1); 139 140 ATF_REQUIRE(linkat(AT_FDCWD, FILEERR, AT_FDCWD, TARGET, 0) == -1); 141 } 142 143 ATF_TC_CLEANUP(linkat_fdcwderr, tc) 144 { 145 (void)unlink(FILE); 146 (void)unlink(FILEERR); 147 (void)unlink(TARGET); 148 (void)rmdir(NDIR); 149 (void)rmdir(ODIR); 150 } 151 152 ATF_TC_WITH_CLEANUP(linkat_fderr); 153 ATF_TC_HEAD(linkat_fderr, tc) 154 { 155 atf_tc_set_md_var(tc, "descr", "See that linkat fails with fd as -1"); 156 } 157 158 ATF_TC_BODY(linkat_fderr, tc) 159 { 160 int fd; 161 162 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 163 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 164 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 165 ATF_REQUIRE(close(fd) != -1); 166 167 ATF_REQUIRE(linkat(-1, FILE, AT_FDCWD, TARGET, 0) == -1); 168 ATF_REQUIRE(linkat(AT_FDCWD, FILE, -1, TARGET, 0) == -1); 169 ATF_REQUIRE(linkat(-1, FILE, -1, TARGET, 0) == -1); 170 } 171 172 ATF_TC_CLEANUP(linkat_fderr, tc) 173 { 174 (void)unlink(FILE); 175 (void)unlink(TARGET); 176 (void)rmdir(NDIR); 177 (void)rmdir(ODIR); 178 } 179 180 ATF_TC_WITH_CLEANUP(linkat_fdlink1); 181 ATF_TC_HEAD(linkat_fdlink1, tc) 182 { 183 atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink target"); 184 } 185 186 ATF_TC_BODY(linkat_fdlink1, tc) 187 { 188 int ofd, nfd, fd; 189 struct stat ost, nst; 190 191 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 192 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 193 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 194 ATF_REQUIRE(close(fd) != -1); 195 ATF_REQUIRE(symlink(RELFILE, LINK) == 0); 196 197 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 198 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 199 ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET, 200 AT_SYMLINK_FOLLOW) == 0); 201 ATF_REQUIRE(close(ofd) == 0); 202 ATF_REQUIRE(close(nfd) == 0); 203 204 ATF_REQUIRE(lstat(LINK, &ost) == 0); 205 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 206 ATF_REQUIRE(ost.st_ino != nst.st_ino); 207 208 ATF_REQUIRE(lstat(FILE, &ost) == 0); 209 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 210 ATF_REQUIRE(ost.st_ino == nst.st_ino); 211 } 212 213 ATF_TC_CLEANUP(linkat_fdlink1, tc) 214 { 215 (void)unlink(FILE); 216 (void)unlink(LINK); 217 (void)unlink(TARGET); 218 (void)rmdir(NDIR); 219 (void)rmdir(ODIR); 220 } 221 222 223 ATF_TC_WITH_CLEANUP(linkat_fdlink2); 224 ATF_TC_HEAD(linkat_fdlink2, tc) 225 { 226 atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink source"); 227 } 228 229 ATF_TC_BODY(linkat_fdlink2, tc) 230 { 231 int ofd, nfd, fd; 232 struct stat ost, nst; 233 234 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 235 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 236 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 237 ATF_REQUIRE(close(fd) != -1); 238 ATF_REQUIRE(symlink(RELFILE, LINK) == 0); 239 240 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 241 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 242 ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET, 0) == 0); 243 ATF_REQUIRE(close(ofd) == 0); 244 ATF_REQUIRE(close(nfd) == 0); 245 246 ATF_REQUIRE(lstat(LINK, &ost) == 0); 247 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 248 ATF_REQUIRE(ost.st_ino == nst.st_ino); 249 250 ATF_REQUIRE(lstat(FILE, &ost) == 0); 251 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 252 ATF_REQUIRE(ost.st_ino != nst.st_ino); 253 } 254 255 ATF_TC_CLEANUP(linkat_fdlink2, tc) 256 { 257 (void)unlink(FILE); 258 (void)unlink(LINK); 259 (void)unlink(TARGET); 260 (void)rmdir(NDIR); 261 (void)rmdir(ODIR); 262 } 263 264 ATF_TP_ADD_TCS(tp) 265 { 266 267 ATF_TP_ADD_TC(tp, linkat_fd); 268 ATF_TP_ADD_TC(tp, linkat_fdcwd); 269 ATF_TP_ADD_TC(tp, linkat_fdcwderr); 270 ATF_TP_ADD_TC(tp, linkat_fderr); 271 ATF_TP_ADD_TC(tp, linkat_fdlink1); 272 ATF_TP_ADD_TC(tp, linkat_fdlink2); 273 274 return atf_no_error(); 275 } 276