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/*-
* 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("$FreeBSD$");
/*
* 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;
#if !defined(_WIN32) || defined(__CYGWIN__)
struct stat st2;
#endif
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));
#if !defined(_WIN32) || defined(__CYGWIN__)
assertEqualInt(0, symlink("real_dir", "dest1/dir"));
/* "dir2" is a symlink to a non-existing "real_dir2" */
assertEqualInt(0, symlink("real_dir2", "dest1/dir2"));
#else
skipping("symlink does not work on this platform");
#endif
/* "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"));
#if !defined(_WIN32) || defined(__CYGWIN__)
/* "file2" is a symlink to non-existing "real_file2" */
assertEqualInt(0, symlink("real_file2", "dest1/file2"));
#else
skipping("symlink does not work on this platform");
#endif
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));
#if !defined(_WIN32) || defined(__CYGWIN__)
assertEqualInt(0, symlink("real_dir", "dest2/dir"));
/* "dir2" is a symlink to a non-existing "real_dir2" */
assertEqualInt(0, symlink("real_dir2", "dest2/dir2"));
#else
skipping("symlink does not work on this platform");
#endif
/* "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"));
#if !defined(_WIN32) || defined(__CYGWIN__)
/* "file2" is a symlink to non-existing "real_file2" */
assertEqualInt(0, symlink("real_file2", "dest2/file2"));
#else
skipping("symlink does not work on this platform");
#endif
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 !defined(_WIN32) || defined(__CYGWIN__)
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);
}
#else
skipping("symlink does not work on this platform");
#endif
/* 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));
}
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