2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
26 __FBSDID("$FreeBSD$");
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.
35 mkfile(const char *name, int mode, const char *contents, ssize_t size)
37 int fd = open(name, O_CREAT | O_WRONLY, mode);
40 if (size != write(fd, contents, size)) {
48 DEFINE_TEST(test_symlink_dir)
51 #if !defined(_WIN32) || defined(__CYGWIN__)
58 assertEqualInt(0, mkdir("source", 0755));
59 assertEqualInt(0, mkfile("source/file", 0755, "a", 1));
60 assertEqualInt(0, mkfile("source/file2", 0755, "ab", 2));
61 assertEqualInt(0, mkdir("source/dir", 0755));
62 assertEqualInt(0, mkdir("source/dir/d", 0755));
63 assertEqualInt(0, mkfile("source/dir/f", 0755, "abc", 3));
64 assertEqualInt(0, mkdir("source/dir2", 0755));
65 assertEqualInt(0, mkdir("source/dir2/d2", 0755));
66 assertEqualInt(0, mkfile("source/dir2/f2", 0755, "abcd", 4));
67 assertEqualInt(0, mkdir("source/dir3", 0755));
68 assertEqualInt(0, mkdir("source/dir3/d3", 0755));
69 assertEqualInt(0, mkfile("source/dir3/f3", 0755, "abcde", 5));
72 systemf("%s -cf test.tar -C source dir dir2 dir3 file file2",
76 * Extract with -x and without -P.
78 assertEqualInt(0, mkdir("dest1", 0755));
79 /* "dir" is a symlink to an existing "real_dir" */
80 assertEqualInt(0, mkdir("dest1/real_dir", 0755));
81 #if !defined(_WIN32) || defined(__CYGWIN__)
82 assertEqualInt(0, symlink("real_dir", "dest1/dir"));
83 /* "dir2" is a symlink to a non-existing "real_dir2" */
84 assertEqualInt(0, symlink("real_dir2", "dest1/dir2"));
86 skipping("symlink does not work on this platform");
88 /* "dir3" is a symlink to an existing "non_dir3" */
89 assertEqualInt(0, mkfile("dest1/non_dir3", 0755, "abcdef", 6));
90 assertEqualInt(0, symlink("non_dir3", "dest1/dir3"));
91 /* "file" is a symlink to existing "real_file" */
92 assertEqualInt(0, mkfile("dest1/real_file", 0755, "abcdefg", 7));
93 assertEqualInt(0, symlink("real_file", "dest1/file"));
94 #if !defined(_WIN32) || defined(__CYGWIN__)
95 /* "file2" is a symlink to non-existing "real_file2" */
96 assertEqualInt(0, symlink("real_file2", "dest1/file2"));
98 skipping("symlink does not work on this platform");
100 assertEqualInt(0, systemf("%s -xf test.tar -C dest1", testprog));
102 /* dest1/dir symlink should be removed */
103 assertEqualInt(0, lstat("dest1/dir", &st));
104 failure("symlink to dir was followed when it shouldn't be");
105 assert(S_ISDIR(st.st_mode));
106 /* dest1/dir2 symlink should be removed */
107 assertEqualInt(0, lstat("dest1/dir2", &st));
108 failure("Broken symlink wasn't replaced with dir");
109 assert(S_ISDIR(st.st_mode));
110 /* dest1/dir3 symlink should be removed */
111 assertEqualInt(0, lstat("dest1/dir3", &st));
112 failure("Symlink to non-dir wasn't replaced with dir");
113 assert(S_ISDIR(st.st_mode));
114 /* dest1/file symlink should be removed */
115 assertEqualInt(0, lstat("dest1/file", &st));
116 failure("Symlink to existing file should be removed");
117 assert(S_ISREG(st.st_mode));
118 /* dest1/file2 symlink should be removed */
119 assertEqualInt(0, lstat("dest1/file2", &st));
120 failure("Symlink to non-existing file should be removed");
121 assert(S_ISREG(st.st_mode));
124 * Extract with both -x and -P
126 assertEqualInt(0, mkdir("dest2", 0755));
127 /* "dir" is a symlink to existing "real_dir" */
128 assertEqualInt(0, mkdir("dest2/real_dir", 0755));
129 #if !defined(_WIN32) || defined(__CYGWIN__)
130 assertEqualInt(0, symlink("real_dir", "dest2/dir"));
131 /* "dir2" is a symlink to a non-existing "real_dir2" */
132 assertEqualInt(0, symlink("real_dir2", "dest2/dir2"));
134 skipping("symlink does not work on this platform");
136 /* "dir3" is a symlink to an existing "non_dir3" */
137 assertEqualInt(0, mkfile("dest2/non_dir3", 0755, "abcdefgh", 8));
138 assertEqualInt(0, symlink("non_dir3", "dest2/dir3"));
139 /* "file" is a symlink to existing "real_file" */
140 assertEqualInt(0, mkfile("dest2/real_file", 0755, "abcdefghi", 9));
141 assertEqualInt(0, symlink("real_file", "dest2/file"));
142 #if !defined(_WIN32) || defined(__CYGWIN__)
143 /* "file2" is a symlink to non-existing "real_file2" */
144 assertEqualInt(0, symlink("real_file2", "dest2/file2"));
146 skipping("symlink does not work on this platform");
148 assertEqualInt(0, systemf("%s -xPf test.tar -C dest2", testprog));
150 /* dest2/dir symlink should be followed */
151 assertEqualInt(0, lstat("dest2/dir", &st));
152 failure("tar -xP removed symlink instead of following it");
153 #if !defined(_WIN32) || defined(__CYGWIN__)
154 if (assert(S_ISLNK(st.st_mode))) {
155 /* Only verify what the symlink points to if it
156 * really is a symlink. */
157 failure("The symlink should point to a directory");
158 assertEqualInt(0, stat("dest2/dir", &st));
159 assert(S_ISDIR(st.st_mode));
160 failure("The pre-existing directory should still be there");
161 assertEqualInt(0, lstat("dest2/real_dir", &st2));
162 assert(S_ISDIR(st2.st_mode));
163 assertEqualInt(st.st_dev, st2.st_dev);
164 failure("symlink should still point to the existing directory");
165 assertEqualInt(st.st_ino, st2.st_ino);
168 skipping("symlink does not work on this platform");
170 /* Contents of 'dir' should be restored */
171 assertEqualInt(0, lstat("dest2/dir/d", &st));
172 assert(S_ISDIR(st.st_mode));
173 assertEqualInt(0, lstat("dest2/dir/f", &st));
174 assert(S_ISREG(st.st_mode));
175 assertEqualInt(3, st.st_size);
176 /* dest2/dir2 symlink should be removed */
177 assertEqualInt(0, lstat("dest2/dir2", &st));
178 failure("Broken symlink wasn't replaced with dir");
179 assert(S_ISDIR(st.st_mode));
180 /* dest2/dir3 symlink should be removed */
181 assertEqualInt(0, lstat("dest2/dir3", &st));
182 failure("Symlink to non-dir wasn't replaced with dir");
183 assert(S_ISDIR(st.st_mode));
184 /* dest2/file symlink should be removed;
185 * even -P shouldn't follow symlinks for files */
186 assertEqualInt(0, lstat("dest2/file", &st));
187 failure("Symlink to existing file should be removed");
188 assert(S_ISREG(st.st_mode));
189 /* dest2/file2 symlink should be removed */
190 assertEqualInt(0, lstat("dest2/file2", &st));
191 failure("Symlink to non-existing file should be removed");
192 assert(S_ISREG(st.st_mode));