1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*-
* 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, size_t size)
{
FILE *f = fopen(name, "wb");
size_t written;
(void)mode; /* UNUSED */
if (f == NULL)
return (-1);
written = fwrite(contents, 1, size, f);
fclose(f);
if (size != written)
return (-1);
return (0);
}
DEFINE_TEST(test_symlink_dir)
{
assertUmask(0);
assertMakeDir("source", 0755);
assertEqualInt(0, mkfile("source/file", 0755, "a", 1));
assertEqualInt(0, mkfile("source/file2", 0755, "ab", 2));
assertMakeDir("source/dir", 0755);
assertMakeDir("source/dir/d", 0755);
assertEqualInt(0, mkfile("source/dir/f", 0755, "abc", 3));
assertMakeDir("source/dir2", 0755);
assertMakeDir("source/dir2/d2", 0755);
assertEqualInt(0, mkfile("source/dir2/f2", 0755, "abcd", 4));
assertMakeDir("source/dir3", 0755);
assertMakeDir("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.
*/
assertMakeDir("dest1", 0755);
/* "dir" is a symlink to an existing "dest1/real_dir" */
assertMakeDir("dest1/real_dir", 0755);
if (canSymlink()) {
assertMakeSymlink("dest1/dir", "real_dir");
/* "dir2" is a symlink to a non-existing "real_dir2" */
assertMakeSymlink("dest1/dir2", "real_dir2");
} else {
skipping("some symlink checks");
}
/* "dir3" is a symlink to an existing "non_dir3" */
assertEqualInt(0, mkfile("dest1/non_dir3", 0755, "abcdef", 6));
if (canSymlink())
assertMakeSymlink("dest1/dir3", "non_dir3");
/* "file" is a symlink to existing "real_file" */
assertEqualInt(0, mkfile("dest1/real_file", 0755, "abcdefg", 7));
if (canSymlink()) {
assertMakeSymlink("dest1/file", "real_file");
/* "file2" is a symlink to non-existing "real_file2" */
assertMakeSymlink("dest1/file2", "real_file2");
}
assertEqualInt(0, systemf("%s -xf test.tar -C dest1", testprog));
/* dest1/dir symlink should be replaced */
failure("symlink to dir was followed when it shouldn't be");
assertIsDir("dest1/dir", -1);
/* dest1/dir2 symlink should be replaced */
failure("Broken symlink wasn't replaced with dir");
assertIsDir("dest1/dir2", -1);
/* dest1/dir3 symlink should be replaced */
failure("Symlink to non-dir wasn't replaced with dir");
assertIsDir("dest1/dir3", -1);
/* dest1/file symlink should be replaced */
failure("Symlink to existing file should be replaced");
assertIsReg("dest1/file", -1);
/* dest1/file2 symlink should be replaced */
failure("Symlink to non-existing file should be replaced");
assertIsReg("dest1/file2", -1);
/*
* Extract with both -x and -P
*/
assertMakeDir("dest2", 0755);
/* "dir" is a symlink to existing "real_dir" */
assertMakeDir("dest2/real_dir", 0755);
if (canSymlink())
assertMakeSymlink("dest2/dir", "real_dir");
/* "dir2" is a symlink to a non-existing "real_dir2" */
if (canSymlink())
assertMakeSymlink("dest2/dir2", "real_dir2");
/* "dir3" is a symlink to an existing "non_dir3" */
assertEqualInt(0, mkfile("dest2/non_dir3", 0755, "abcdefgh", 8));
if (canSymlink())
assertMakeSymlink("dest2/dir3", "non_dir3");
/* "file" is a symlink to existing "real_file" */
assertEqualInt(0, mkfile("dest2/real_file", 0755, "abcdefghi", 9));
if (canSymlink())
assertMakeSymlink("dest2/file", "real_file");
/* "file2" is a symlink to non-existing "real_file2" */
if (canSymlink())
assertMakeSymlink("dest2/file2", "real_file2");
assertEqualInt(0, systemf("%s -xPf test.tar -C dest2", testprog));
/* dest2/dir symlink should be followed */
if (canSymlink()) {
assertIsSymlink("dest2/dir", "real_dir");
assertIsDir("dest2/real_dir", -1);
}
/* Contents of 'dir' should be restored */
assertIsDir("dest2/dir/d", -1);
assertIsReg("dest2/dir/f", -1);
assertFileSize("dest2/dir/f", 3);
/* dest2/dir2 symlink should be removed */
failure("Broken symlink wasn't replaced with dir");
assertIsDir("dest2/dir2", -1);
/* dest2/dir3 symlink should be removed */
failure("Symlink to non-dir wasn't replaced with dir");
assertIsDir("dest2/dir3", -1);
/* dest2/file symlink should be removed;
* even -P shouldn't follow symlinks for files */
failure("Symlink to existing file should be removed");
assertIsReg("dest2/file", -1);
/* dest2/file2 symlink should be removed */
failure("Symlink to non-existing file should be removed");
assertIsReg("dest2/file2", -1);
}
|