/*- * Copyright (c) 2003-2007 Tim Kientzle * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "test.h" __FBSDID("$FreeBSD: src/usr.bin/tar/test/test_symlink_dir.c,v 1.1 2008/09/14 02:16:04 kientzle Exp $"); /* * tar -x -P should follow existing symlinks for dirs, but not other * content. Plain tar -x should remove symlinks when they're in the * way of a dir extraction. */ static int mkfile(const char *name, int mode, const char *contents, ssize_t size) { int fd = open(name, O_CREAT | O_WRONLY, mode); if (fd < 0) return (-1); if (size != write(fd, contents, size)) { close(fd); return (-1); } close(fd); return (0); } DEFINE_TEST(test_symlink_dir) { struct stat st, st2; int oldumask; oldumask = umask(0); assertEqualInt(0, mkdir("source", 0755)); assertEqualInt(0, mkfile("source/file", 0755, "a", 1)); assertEqualInt(0, mkfile("source/file2", 0755, "ab", 2)); assertEqualInt(0, mkdir("source/dir", 0755)); assertEqualInt(0, mkdir("source/dir/d", 0755)); assertEqualInt(0, mkfile("source/dir/f", 0755, "abc", 3)); assertEqualInt(0, mkdir("source/dir2", 0755)); assertEqualInt(0, mkdir("source/dir2/d2", 0755)); assertEqualInt(0, mkfile("source/dir2/f2", 0755, "abcd", 4)); assertEqualInt(0, mkdir("source/dir3", 0755)); assertEqualInt(0, mkdir("source/dir3/d3", 0755)); assertEqualInt(0, mkfile("source/dir3/f3", 0755, "abcde", 5)); assertEqualInt(0, systemf("%s -cf test.tar -C source dir dir2 dir3 file file2", testprog)); /* * Extract with -x and without -P. */ assertEqualInt(0, mkdir("dest1", 0755)); /* "dir" is a symlink to an existing "real_dir" */ assertEqualInt(0, mkdir("dest1/real_dir", 0755)); assertEqualInt(0, symlink("real_dir", "dest1/dir")); /* "dir2" is a symlink to a non-existing "real_dir2" */ assertEqualInt(0, symlink("real_dir2", "dest1/dir2")); /* "dir3" is a symlink to an existing "non_dir3" */ assertEqualInt(0, mkfile("dest1/non_dir3", 0755, "abcdef", 6)); assertEqualInt(0, symlink("non_dir3", "dest1/dir3")); /* "file" is a symlink to existing "real_file" */ assertEqualInt(0, mkfile("dest1/real_file", 0755, "abcdefg", 7)); assertEqualInt(0, symlink("real_file", "dest1/file")); /* "file2" is a symlink to non-existing "real_file2" */ assertEqualInt(0, symlink("real_file2", "dest1/file2")); assertEqualInt(0, systemf("%s -xf test.tar -C dest1", testprog)); /* dest1/dir symlink should be removed */ assertEqualInt(0, lstat("dest1/dir", &st)); failure("symlink to dir was followed when it shouldn't be"); assert(S_ISDIR(st.st_mode)); /* dest1/dir2 symlink should be removed */ assertEqualInt(0, lstat("dest1/dir2", &st)); failure("Broken symlink wasn't replaced with dir"); assert(S_ISDIR(st.st_mode)); /* dest1/dir3 symlink should be removed */ assertEqualInt(0, lstat("dest1/dir3", &st)); failure("Symlink to non-dir wasn't replaced with dir"); assert(S_ISDIR(st.st_mode)); /* dest1/file symlink should be removed */ assertEqualInt(0, lstat("dest1/file", &st)); failure("Symlink to existing file should be removed"); assert(S_ISREG(st.st_mode)); /* dest1/file2 symlink should be removed */ assertEqualInt(0, lstat("dest1/file2", &st)); failure("Symlink to non-existing file should be removed"); assert(S_ISREG(st.st_mode)); /* * Extract with both -x and -P */ assertEqualInt(0, mkdir("dest2", 0755)); /* "dir" is a symlink to existing "real_dir" */ assertEqualInt(0, mkdir("dest2/real_dir", 0755)); assertEqualInt(0, symlink("real_dir", "dest2/dir")); /* "dir2" is a symlink to a non-existing "real_dir2" */ assertEqualInt(0, symlink("real_dir2", "dest2/dir2")); /* "dir3" is a symlink to an existing "non_dir3" */ assertEqualInt(0, mkfile("dest2/non_dir3", 0755, "abcdefgh", 8)); assertEqualInt(0, symlink("non_dir3", "dest2/dir3")); /* "file" is a symlink to existing "real_file" */ assertEqualInt(0, mkfile("dest2/real_file", 0755, "abcdefghi", 9)); assertEqualInt(0, symlink("real_file", "dest2/file")); /* "file2" is a symlink to non-existing "real_file2" */ assertEqualInt(0, symlink("real_file2", "dest2/file2")); assertEqualInt(0, systemf("%s -xPf test.tar -C dest2", testprog)); /* dest2/dir symlink should be followed */ assertEqualInt(0, lstat("dest2/dir", &st)); failure("tar -xP removed symlink instead of following it"); if (assert(S_ISLNK(st.st_mode))) { /* Only verify what the symlink points to if it * really is a symlink. */ failure("The symlink should point to a directory"); assertEqualInt(0, stat("dest2/dir", &st)); assert(S_ISDIR(st.st_mode)); failure("The pre-existing directory should still be there"); assertEqualInt(0, lstat("dest2/real_dir", &st2)); assert(S_ISDIR(st2.st_mode)); assertEqualInt(st.st_dev, st2.st_dev); failure("symlink should still point to the existing directory"); assertEqualInt(st.st_ino, st2.st_ino); } /* Contents of 'dir' should be restored */ assertEqualInt(0, lstat("dest2/dir/d", &st)); assert(S_ISDIR(st.st_mode)); assertEqualInt(0, lstat("dest2/dir/f", &st)); assert(S_ISREG(st.st_mode)); assertEqualInt(3, st.st_size); /* dest2/dir2 symlink should be removed */ assertEqualInt(0, lstat("dest2/dir2", &st)); failure("Broken symlink wasn't replaced with dir"); assert(S_ISDIR(st.st_mode)); /* dest2/dir3 symlink should be removed */ assertEqualInt(0, lstat("dest2/dir3", &st)); failure("Symlink to non-dir wasn't replaced with dir"); assert(S_ISDIR(st.st_mode)); /* dest2/file symlink should be removed; * even -P shouldn't follow symlinks for files */ assertEqualInt(0, lstat("dest2/file", &st)); failure("Symlink to existing file should be removed"); assert(S_ISREG(st.st_mode)); /* dest2/file2 symlink should be removed */ assertEqualInt(0, lstat("dest2/file2", &st)); failure("Symlink to non-existing file should be removed"); assert(S_ISREG(st.st_mode)); }