1/*- 2 * Copyright (c) 2003-2007 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25#include "test.h" 26__FBSDID("$FreeBSD: src/usr.bin/tar/test/test_symlink_dir.c,v 1.1 2008/09/14 02:16:04 kientzle Exp $"); 27 28/* 29 * tar -x -P should follow existing symlinks for dirs, but not other 30 * content. Plain tar -x should remove symlinks when they're in the 31 * way of a dir extraction. 32 */ 33 34static int 35mkfile(const char *name, int mode, const char *contents, size_t size) 36{ 37 FILE *f = fopen(name, "wb"); 38 size_t written; 39 40 (void)mode; /* UNUSED */ 41 if (f == NULL) 42 return (-1); 43 written = fwrite(contents, 1, size, f); 44 fclose(f); 45 if (size != written) 46 return (-1); 47 return (0); 48} 49 50DEFINE_TEST(test_symlink_dir) 51{ 52 assertUmask(0); 53 54 assertMakeDir("source", 0755); 55 assertEqualInt(0, mkfile("source/file", 0755, "a", 1)); 56 assertEqualInt(0, mkfile("source/file2", 0755, "ab", 2)); 57 assertMakeDir("source/dir", 0755); 58 assertMakeDir("source/dir/d", 0755); 59 assertEqualInt(0, mkfile("source/dir/f", 0755, "abc", 3)); 60 assertMakeDir("source/dir2", 0755); 61 assertMakeDir("source/dir2/d2", 0755); 62 assertEqualInt(0, mkfile("source/dir2/f2", 0755, "abcd", 4)); 63 assertMakeDir("source/dir3", 0755); 64 assertMakeDir("source/dir3/d3", 0755); 65 assertEqualInt(0, mkfile("source/dir3/f3", 0755, "abcde", 5)); 66 67 assertEqualInt(0, 68 systemf("%s -cf test.tar -C source dir dir2 dir3 file file2", 69 testprog)); 70 71 /* 72 * Extract with -x and without -P. 73 */ 74 assertMakeDir("dest1", 0755); 75 /* "dir" is a symlink to an existing "dest1/real_dir" */ 76 assertMakeDir("dest1/real_dir", 0755); 77 if (canSymlink()) { 78 assertMakeSymlink("dest1/dir", "real_dir"); 79 /* "dir2" is a symlink to a non-existing "real_dir2" */ 80 assertMakeSymlink("dest1/dir2", "real_dir2"); 81 } else { 82 skipping("some symlink checks"); 83 } 84 /* "dir3" is a symlink to an existing "non_dir3" */ 85 assertEqualInt(0, mkfile("dest1/non_dir3", 0755, "abcdef", 6)); 86 if (canSymlink()) 87 assertMakeSymlink("dest1/dir3", "non_dir3"); 88 /* "file" is a symlink to existing "real_file" */ 89 assertEqualInt(0, mkfile("dest1/real_file", 0755, "abcdefg", 7)); 90 if (canSymlink()) { 91 assertMakeSymlink("dest1/file", "real_file"); 92 /* "file2" is a symlink to non-existing "real_file2" */ 93 assertMakeSymlink("dest1/file2", "real_file2"); 94 } 95 assertEqualInt(0, systemf("%s -xf test.tar -C dest1", testprog)); 96 97 /* dest1/dir symlink should be replaced */ 98 failure("symlink to dir was followed when it shouldn't be"); 99 assertIsDir("dest1/dir", -1); 100 /* dest1/dir2 symlink should be replaced */ 101 failure("Broken symlink wasn't replaced with dir"); 102 assertIsDir("dest1/dir2", -1); 103 /* dest1/dir3 symlink should be replaced */ 104 failure("Symlink to non-dir wasn't replaced with dir"); 105 assertIsDir("dest1/dir3", -1); 106 /* dest1/file symlink should be replaced */ 107 failure("Symlink to existing file should be replaced"); 108 assertIsReg("dest1/file", -1); 109 /* dest1/file2 symlink should be replaced */ 110 failure("Symlink to non-existing file should be replaced"); 111 assertIsReg("dest1/file2", -1); 112 113 /* 114 * Extract with both -x and -P 115 */ 116 assertMakeDir("dest2", 0755); 117 /* "dir" is a symlink to existing "real_dir" */ 118 assertMakeDir("dest2/real_dir", 0755); 119 if (canSymlink()) 120 assertMakeSymlink("dest2/dir", "real_dir"); 121 /* "dir2" is a symlink to a non-existing "real_dir2" */ 122 if (canSymlink()) 123 assertMakeSymlink("dest2/dir2", "real_dir2"); 124 /* "dir3" is a symlink to an existing "non_dir3" */ 125 assertEqualInt(0, mkfile("dest2/non_dir3", 0755, "abcdefgh", 8)); 126 if (canSymlink()) 127 assertMakeSymlink("dest2/dir3", "non_dir3"); 128 /* "file" is a symlink to existing "real_file" */ 129 assertEqualInt(0, mkfile("dest2/real_file", 0755, "abcdefghi", 9)); 130 if (canSymlink()) 131 assertMakeSymlink("dest2/file", "real_file"); 132 /* "file2" is a symlink to non-existing "real_file2" */ 133 if (canSymlink()) 134 assertMakeSymlink("dest2/file2", "real_file2"); 135 assertEqualInt(0, systemf("%s -xPf test.tar -C dest2", testprog)); 136 137 /* dest2/dir symlink should be followed */ 138 if (canSymlink()) { 139 assertIsSymlink("dest2/dir", "real_dir"); 140 assertIsDir("dest2/real_dir", -1); 141 } 142 143 /* Contents of 'dir' should be restored */ 144 assertIsDir("dest2/dir/d", -1); 145 assertIsReg("dest2/dir/f", -1); 146 assertFileSize("dest2/dir/f", 3); 147 /* dest2/dir2 symlink should be removed */ 148 failure("Broken symlink wasn't replaced with dir"); 149 assertIsDir("dest2/dir2", -1); 150 /* dest2/dir3 symlink should be removed */ 151 failure("Symlink to non-dir wasn't replaced with dir"); 152 assertIsDir("dest2/dir3", -1); 153 /* dest2/file symlink should be removed; 154 * even -P shouldn't follow symlinks for files */ 155 failure("Symlink to existing file should be removed"); 156 assertIsReg("dest2/file", -1); 157 /* dest2/file2 symlink should be removed */ 158 failure("Symlink to non-existing file should be removed"); 159 assertIsReg("dest2/file2", -1); 160} 161