1 /* $NetBSD: t_linkat.c,v 1.2 2013/03/17 04:46:06 jmmv 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 1.2 2013/03/17 04:46:06 jmmv 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(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 ATF_TC_BODY(linkat_fd, tc) 62 { 63 int ofd, nfd, fd; 64 struct stat ost, nst; 65 66 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 67 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 68 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 69 ATF_REQUIRE(close(fd) != -1); 70 71 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 72 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 73 ATF_REQUIRE(linkat(ofd, BASEFILE, nfd, BASETARGET, 0) == 0); 74 ATF_REQUIRE(close(ofd) == 0); 75 ATF_REQUIRE(close(nfd) == 0); 76 77 ATF_REQUIRE(stat(FILE, &ost) == 0); 78 ATF_REQUIRE(stat(TARGET, &nst) == 0); 79 ATF_REQUIRE(ost.st_ino == nst.st_ino); 80 } 81 82 ATF_TC(linkat_fdcwd); 83 ATF_TC_HEAD(linkat_fdcwd, tc) 84 { 85 atf_tc_set_md_var(tc, "descr", 86 "See that linkat works with fd as AT_FDCWD"); 87 } 88 ATF_TC_BODY(linkat_fdcwd, tc) 89 { 90 int fd; 91 struct stat ost, nst; 92 93 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 94 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 95 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 96 ATF_REQUIRE(close(fd) != -1); 97 98 ATF_REQUIRE(linkat(AT_FDCWD, FILE, AT_FDCWD, TARGET, 0) == 0); 99 100 ATF_REQUIRE(stat(FILE, &ost) == 0); 101 ATF_REQUIRE(stat(TARGET, &nst) == 0); 102 ATF_REQUIRE(ost.st_ino == nst.st_ino); 103 } 104 105 ATF_TC(linkat_fdcwderr); 106 ATF_TC_HEAD(linkat_fdcwderr, tc) 107 { 108 atf_tc_set_md_var(tc, "descr", 109 "See that linkat fails with fd as AT_FDCWD and bad path"); 110 } 111 ATF_TC_BODY(linkat_fdcwderr, tc) 112 { 113 int fd; 114 115 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 116 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 117 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 118 ATF_REQUIRE(close(fd) != -1); 119 120 ATF_REQUIRE(linkat(AT_FDCWD, FILEERR, AT_FDCWD, TARGET, 0) == -1); 121 } 122 123 ATF_TC(linkat_fderr); 124 ATF_TC_HEAD(linkat_fderr, tc) 125 { 126 atf_tc_set_md_var(tc, "descr", "See that linkat fails with fd as -1"); 127 } 128 ATF_TC_BODY(linkat_fderr, tc) 129 { 130 int fd; 131 132 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 133 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 134 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 135 ATF_REQUIRE(close(fd) != -1); 136 137 ATF_REQUIRE(linkat(-1, FILE, AT_FDCWD, TARGET, 0) == -1); 138 ATF_REQUIRE(linkat(AT_FDCWD, FILE, -1, TARGET, 0) == -1); 139 ATF_REQUIRE(linkat(-1, FILE, -1, TARGET, 0) == -1); 140 } 141 142 ATF_TC(linkat_fdlink1); 143 ATF_TC_HEAD(linkat_fdlink1, tc) 144 { 145 atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink target"); 146 } 147 ATF_TC_BODY(linkat_fdlink1, tc) 148 { 149 int ofd, nfd, fd; 150 struct stat ost, nst; 151 152 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 153 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 154 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 155 ATF_REQUIRE(close(fd) != -1); 156 ATF_REQUIRE(symlink(RELFILE, LINK) == 0); 157 158 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 159 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 160 ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET, 161 AT_SYMLINK_FOLLOW) == 0); 162 ATF_REQUIRE(close(ofd) == 0); 163 ATF_REQUIRE(close(nfd) == 0); 164 165 ATF_REQUIRE(lstat(LINK, &ost) == 0); 166 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 167 ATF_REQUIRE(ost.st_ino != nst.st_ino); 168 169 ATF_REQUIRE(lstat(FILE, &ost) == 0); 170 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 171 ATF_REQUIRE(ost.st_ino == nst.st_ino); 172 } 173 174 175 ATF_TC(linkat_fdlink2); 176 ATF_TC_HEAD(linkat_fdlink2, tc) 177 { 178 atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink source"); 179 } 180 ATF_TC_BODY(linkat_fdlink2, tc) 181 { 182 int ofd, nfd, fd; 183 struct stat ost, nst; 184 185 ATF_REQUIRE(mkdir(ODIR, 0755) == 0); 186 ATF_REQUIRE(mkdir(NDIR, 0755) == 0); 187 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 188 ATF_REQUIRE(close(fd) != -1); 189 ATF_REQUIRE(symlink(RELFILE, LINK) == 0); 190 191 ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1); 192 ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1); 193 ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET, 0) == 0); 194 ATF_REQUIRE(close(ofd) == 0); 195 ATF_REQUIRE(close(nfd) == 0); 196 197 ATF_REQUIRE(lstat(LINK, &ost) == 0); 198 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 199 ATF_REQUIRE(ost.st_ino == nst.st_ino); 200 201 ATF_REQUIRE(lstat(FILE, &ost) == 0); 202 ATF_REQUIRE(lstat(TARGET, &nst) == 0); 203 ATF_REQUIRE(ost.st_ino != nst.st_ino); 204 } 205 206 ATF_TP_ADD_TCS(tp) 207 { 208 209 ATF_TP_ADD_TC(tp, linkat_fd); 210 ATF_TP_ADD_TC(tp, linkat_fdcwd); 211 ATF_TP_ADD_TC(tp, linkat_fdcwderr); 212 ATF_TP_ADD_TC(tp, linkat_fderr); 213 ATF_TP_ADD_TC(tp, linkat_fdlink1); 214 ATF_TP_ADD_TC(tp, linkat_fdlink2); 215 216 return atf_no_error(); 217 } 218