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Diffstat (limited to 'Utilities/cmlibarchive/tar/test/test_strip_components.c')
| -rw-r--r-- | Utilities/cmlibarchive/tar/test/test_strip_components.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/Utilities/cmlibarchive/tar/test/test_strip_components.c b/Utilities/cmlibarchive/tar/test/test_strip_components.c new file mode 100644 index 0000000..6d258e4 --- /dev/null +++ b/Utilities/cmlibarchive/tar/test/test_strip_components.c @@ -0,0 +1,109 @@ +/*- + * 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) +{ + FILE *f = fopen(fn, "w"); + failure("Couldn't create file '%s', errno=%d (%s)\n", + fn, errno, strerror(errno)); + if (!assert(f != NULL)) + return (0); /* Failure. */ + fclose(f); + return (1); /* Success */ +} + +DEFINE_TEST(test_strip_components) +{ + assertMakeDir("d0", 0755); + assertChdir("d0"); + assertMakeDir("d1", 0755); + assertMakeDir("d1/d2", 0755); + assertMakeDir("d1/d2/d3", 0755); + assertEqualInt(1, touch("d1/d2/f1")); + assertMakeHardlink("l1", "d1/d2/f1"); + assertMakeHardlink("d1/l2", "d1/d2/f1"); + if (canSymlink()) { + assertMakeSymlink("s1", "d1/d2/f1"); + assertMakeSymlink("d1/s2", "d2/f1"); + } + assertChdir(".."); + + assertEqualInt(0, systemf("%s -cf test.tar d0", testprog)); + + assertMakeDir("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"); + assertFileNotExists("target/d0"); + failure("d0/d1/ is too short and should not get restored"); + assertFileNotExists("target/d1"); + failure("d0/d1/s2 is a symlink to something that won't be extracted"); + /* If platform supports symlinks, target/s2 is a broken symlink. */ + /* If platform does not support symlink, target/s2 doesn't exist. */ + assertFileNotExists("target/s2"); + if (canSymlink()) + assertIsSymlink("target/s2", "d2/f1"); + failure("d0/d1/d2 should be extracted"); + assertIsDir("target/d2", -1); + + /* + * 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"); + assertFileNotExists("target/l1"); + failure("d0/d1/l2 is a hardlink to file whose name was too short"); + assertFileNotExists("target/l2"); + failure("d0/d1/d2/f1 is a hardlink to file whose name was too short"); + assertFileNotExists("target/d2/f1"); +} |