h_cwd.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: h_cwd.c,v 1.2.2.2 2011/03/05 15:10:56 bouyer Exp $ */ 2 1.2.2.2 bouyer 3 1.2.2.2 bouyer /*- 4 1.2.2.2 bouyer * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 1.2.2.2 bouyer * All rights reserved. 6 1.2.2.2 bouyer * 7 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 9 1.2.2.2 bouyer * are met: 10 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 15 1.2.2.2 bouyer * 16 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17 1.2.2.2 bouyer * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18 1.2.2.2 bouyer * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 1.2.2.2 bouyer * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 1.2.2.2 bouyer * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21 1.2.2.2 bouyer * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 1.2.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 1.2.2.2 bouyer * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 1.2.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 1.2.2.2 bouyer * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 1.2.2.2 bouyer * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 1.2.2.2 bouyer * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 1.2.2.2 bouyer */ 29 1.2.2.2 bouyer 30 1.2.2.2 bouyer #include <sys/types.h> 31 1.2.2.2 bouyer #include <sys/stat.h> 32 1.2.2.2 bouyer 33 1.2.2.2 bouyer #include <err.h> 34 1.2.2.2 bouyer #include <errno.h> 35 1.2.2.2 bouyer #include <fcntl.h> 36 1.2.2.2 bouyer #include <string.h> 37 1.2.2.2 bouyer #include <unistd.h> 38 1.2.2.2 bouyer 39 1.2.2.2 bouyer static const char *prefix; 40 1.2.2.2 bouyer static size_t prefixlen; 41 1.2.2.2 bouyer static char buf[1024]; 42 1.2.2.2 bouyer static char pwd[1024]; 43 1.2.2.2 bouyer 44 1.2.2.2 bouyer static const char * 45 1.2.2.2 bouyer makepath(const char *tail) 46 1.2.2.2 bouyer { 47 1.2.2.2 bouyer 48 1.2.2.2 bouyer strcpy(buf, prefix); 49 1.2.2.2 bouyer if (prefix[prefixlen-1] != '/') 50 1.2.2.2 bouyer strcat(buf, "/"); 51 1.2.2.2 bouyer strcat(buf, tail); 52 1.2.2.2 bouyer 53 1.2.2.2 bouyer return buf; 54 1.2.2.2 bouyer } 55 1.2.2.2 bouyer 56 1.2.2.2 bouyer static void 57 1.2.2.2 bouyer dochdir(const char *path, const char *errmsg) 58 1.2.2.2 bouyer { 59 1.2.2.2 bouyer 60 1.2.2.2 bouyer if (chdir(path) == -1) 61 1.2.2.2 bouyer err(1, "%s", errmsg); 62 1.2.2.2 bouyer } 63 1.2.2.2 bouyer 64 1.2.2.2 bouyer static void 65 1.2.2.2 bouyer dofchdir(const char *path, const char *errmsg) 66 1.2.2.2 bouyer { 67 1.2.2.2 bouyer int fd; 68 1.2.2.2 bouyer 69 1.2.2.2 bouyer fd = open(path, O_RDONLY); 70 1.2.2.2 bouyer if (fd == -1) 71 1.2.2.2 bouyer err(1, "open %s", errmsg); 72 1.2.2.2 bouyer if (fchdir(fd) == -1) 73 1.2.2.2 bouyer err(1, "fchdir %s", errmsg); 74 1.2.2.2 bouyer close(fd); 75 1.2.2.2 bouyer } 76 1.2.2.2 bouyer static void (*thechdir)(const char *, const char *); 77 1.2.2.2 bouyer 78 1.2.2.2 bouyer static void 79 1.2.2.2 bouyer simple(void) 80 1.2.2.2 bouyer { 81 1.2.2.2 bouyer 82 1.2.2.2 bouyer thechdir(prefix, "chdir1"); 83 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 84 1.2.2.2 bouyer err(1, "getcwd1"); 85 1.2.2.2 bouyer if (strcmp(pwd, prefix) != 0) 86 1.2.2.2 bouyer errx(1, "strcmp1"); 87 1.2.2.2 bouyer 88 1.2.2.2 bouyer if (mkdir("dir", 0777) == -1) 89 1.2.2.2 bouyer err(1, "mkdir2"); 90 1.2.2.2 bouyer thechdir("dir", "chdir2"); 91 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 92 1.2.2.2 bouyer err(1, "getcwd2"); 93 1.2.2.2 bouyer if (strcmp(pwd, makepath("dir")) != 0) 94 1.2.2.2 bouyer errx(1, "strcmp2"); 95 1.2.2.2 bouyer 96 1.2.2.2 bouyer if (mkdir("dir", 0777) == -1) 97 1.2.2.2 bouyer err(1, "mkdir3"); 98 1.2.2.2 bouyer thechdir("dir", "chdir3"); 99 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 100 1.2.2.2 bouyer err(1, "getcwd3"); 101 1.2.2.2 bouyer if (strcmp(pwd, makepath("dir/dir")) != 0) 102 1.2.2.2 bouyer errx(1, "strcmp3"); 103 1.2.2.2 bouyer 104 1.2.2.2 bouyer thechdir("..", "chdir4"); 105 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 106 1.2.2.2 bouyer err(1, "getcwd4"); 107 1.2.2.2 bouyer if (strcmp(pwd, makepath("dir")) != 0) 108 1.2.2.2 bouyer errx(1, "strcmp4"); 109 1.2.2.2 bouyer 110 1.2.2.2 bouyer 111 1.2.2.2 bouyer thechdir("../../../../../../..", "chdir5"); 112 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 113 1.2.2.2 bouyer err(1, "getcwd5"); 114 1.2.2.2 bouyer if (strcmp(pwd, prefix) != 0) 115 1.2.2.2 bouyer errx(1, "strcmp5"); 116 1.2.2.2 bouyer 117 1.2.2.2 bouyer thechdir("/", "chdir6"); 118 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 119 1.2.2.2 bouyer err(1, "getcwd6"); 120 1.2.2.2 bouyer if (strcmp(pwd, "/") != 0) 121 1.2.2.2 bouyer errx(1, "strcmp6"); 122 1.2.2.2 bouyer } 123 1.2.2.2 bouyer 124 1.2.2.2 bouyer static void 125 1.2.2.2 bouyer symlinktest(void) 126 1.2.2.2 bouyer { 127 1.2.2.2 bouyer 128 1.2.2.2 bouyer thechdir(prefix, "chdir1"); 129 1.2.2.2 bouyer if (mkdir("adir", 0777) == -1) 130 1.2.2.2 bouyer err(1, "mkdir1"); 131 1.2.2.2 bouyer if (mkdir("anotherdir", 0777) == -1) 132 1.2.2.2 bouyer err(1, "mkdir2"); 133 1.2.2.2 bouyer 134 1.2.2.2 bouyer if (symlink("/adir", "anotherdir/lincthesink") == -1) 135 1.2.2.2 bouyer err(1, "symlink"); 136 1.2.2.2 bouyer 137 1.2.2.2 bouyer thechdir("anotherdir/lincthesink", "chdir2"); 138 1.2.2.2 bouyer if (getcwd(pwd, sizeof(pwd)) == NULL) 139 1.2.2.2 bouyer err(1, "getcwd"); 140 1.2.2.2 bouyer if (strcmp(pwd, makepath("adir")) != 0) 141 1.2.2.2 bouyer errx(1, "strcmp"); 142 1.2.2.2 bouyer } 143 1.2.2.2 bouyer 144 1.2.2.2 bouyer int 145 1.2.2.2 bouyer main(int argc, char *argv[]) 146 1.2.2.2 bouyer { 147 1.2.2.2 bouyer 148 1.2.2.2 bouyer if (argc != 4) 149 1.2.2.2 bouyer errx(1, "usage"); 150 1.2.2.2 bouyer 151 1.2.2.2 bouyer prefix = argv[1]; 152 1.2.2.2 bouyer prefixlen = strlen(argv[1]); 153 1.2.2.2 bouyer 154 1.2.2.2 bouyer if (strcmp(argv[3], "chdir") == 0) 155 1.2.2.2 bouyer thechdir = dochdir; 156 1.2.2.2 bouyer else if (strcmp(argv[3], "fchdir") == 0) 157 1.2.2.2 bouyer thechdir = dofchdir; 158 1.2.2.2 bouyer else 159 1.2.2.2 bouyer errx(1, "invalid chdir type"); 160 1.2.2.2 bouyer 161 1.2.2.2 bouyer if (strcmp(argv[2], "simple") == 0) 162 1.2.2.2 bouyer simple(); 163 1.2.2.2 bouyer if (strcmp(argv[2], "symlink") == 0) 164 1.2.2.2 bouyer symlinktest(); 165 1.2.2.2 bouyer 166 1.2.2.2 bouyer return 0; 167 1.2.2.2 bouyer } 168
Indexes created Sun Oct 19 02:09:48 GMT 2025