/*- * 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_strip_components.c,v 1.2 2008/11/10 05:24:13 kientzle Exp $"); static int touch(const char *fn) { int fd = open(fn, O_RDWR | O_CREAT, 0644); failure("Couldn't create file '%s', fd=%d, errno=%d (%s)\n", fn, fd, errno, strerror(errno)); if (!assert(fd > 0)) return (0); /* Failure. */ close(fd); return (1); /* Success */ } DEFINE_TEST(test_strip_components) { struct stat st; assertEqualInt(0, mkdir("d0", 0755)); assertEqualInt(0, chdir("d0")); assertEqualInt(0, mkdir("d1", 0755)); assertEqualInt(0, mkdir("d1/d2", 0755)); assertEqualInt(0, mkdir("d1/d2/d3", 0755)); assertEqualInt(1, touch("d1/d2/f1")); assertEqualInt(0, link("d1/d2/f1", "l1")); assertEqualInt(0, link("d1/d2/f1", "d1/l2")); assertEqualInt(0, symlink("d1/d2/f1", "s1")); assertEqualInt(0, symlink("d2/f1", "d1/s2")); assertEqualInt(0, chdir("..")); assertEqualInt(0, systemf("%s -cf test.tar d0", testprog)); assertEqualInt(0, mkdir("target", 0755)); assertEqualInt(0, systemf("%s -x -C target --strip-components 2 " "-f test.tar", testprog)); failure("d0/ is too short and should not get restored"); assertEqualInt(-1, lstat("target/d0", &st)); failure("d0/d1/ is too short and should not get restored"); assertEqualInt(-1, lstat("target/d1", &st)); failure("d0/d1/s2 is a symlink to something that won't be extracted"); assertEqualInt(-1, stat("target/s2", &st)); assertEqualInt(0, lstat("target/s2", &st)); failure("d0/d1/d2 should be extracted"); assertEqualInt(0, lstat("target/d2", &st)); /* * This next is a complicated case. d0/l1, d0/d1/l2, and * d0/d1/d2/f1 are all hardlinks to the same file; d0/l1 can't * be extracted with --strip-components=2 and the other two * can. Remember that tar normally stores the first file with * a body and the other as hardlink entries to the first * appearance. So the final result depends on the order in * which these three names get archived. If d0/l1 is first, * none of the three can be restored. If either of the longer * names are first, then the two longer ones can both be * restored. * * The tree-walking code used by bsdtar always visits files * before subdirectories, so bsdtar's behavior is fortunately * deterministic: d0/l1 will always get stored first and the * other two will be stored as hardlinks to d0/l1. Since * d0/l1 can't be extracted, none of these three will be * extracted. * * It may be worth extending this test to force a particular * archiving order so as to exercise both of the cases described * above. * * Of course, this is all totally different for cpio and newc * formats because the hardlink management is different. * TODO: Rename this to test_strip_components_tar and create * parallel tests for cpio and newc formats. */ failure("d0/l1 is too short and should not get restored"); assertEqualInt(-1, lstat("target/l1", &st)); failure("d0/d1/l2 is a hardlink to file whose name was too short"); assertEqualInt(-1, lstat("target/l2", &st)); failure("d0/d1/d2/f1 is a hardlink to file whose name was too short"); assertEqualInt(-1, lstat("target/d2/f1", &st)); }