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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// file : tests/link/driver.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <cassert>
#ifndef __cpp_lib_modules
#include <set>
#include <utility> // pair
#include <iostream> // cerr
#include <system_error>
#endif
// Other includes.
#ifdef __cpp_modules
#ifdef __cpp_lib_modules
import std.core;
import std.io;
#endif
import butl.path;
import butl.path_io;
import butl.utility;
import butl.fdstream;
import butl.filesystem;
#else
#include <libbutl/path.mxx>
#include <libbutl/path-io.mxx>
#include <libbutl/utility.mxx>
#include <libbutl/fdstream.mxx>
#include <libbutl/filesystem.mxx>
#endif
using namespace std;
using namespace butl;
static const char text[] = "ABCDEF";
static bool
link_file (const path& target, const path& link, bool hard, bool check_content)
{
try
{
if (hard)
mkhardlink (target, link);
else
mksymlink (target, link);
}
catch (const system_error&)
{
return false;
}
if (!check_content)
return true;
string s;
ifdstream ifs (link);
ifs >> s;
ifs.close (); // Not to miss failed close of the underlying file descriptor.
return s == text;
}
static bool
link_dir (const dir_path& target,
const dir_path& link,
bool hard,
bool check_content)
{
try
{
if (hard)
mkhardlink (target, link);
else
mksymlink (target, link);
}
catch (const system_error&)
{
//cerr << e << endl;
return false;
}
{
auto pe (path_entry (link, false /* follow_symlinks */));
assert (pe.first && pe.second.type == entry_type::symlink);
}
{
auto pe (path_entry (link, true /* follow_symlinks */));
assert (!pe.first || pe.second.type == entry_type::directory);
}
if (!check_content)
return true;
dir_path tp (target.absolute () ? target : link.directory () / target);
set<pair<entry_type, path>> te;
for (const dir_entry& de: dir_iterator (tp))
te.emplace (de.ltype (), de.path ());
set<pair<entry_type, path>> le;
for (const dir_entry& de: dir_iterator (link))
le.emplace (de.ltype (), de.path ());
return te == le;
}
int
main ()
{
dir_path td (dir_path::temp_directory () / dir_path ("butl-link"));
// Recreate the temporary directory (that possibly exists from the previous
// faulty run) for the test files. Delete the directory only if the test
// succeeds to simplify the failure research.
//
try
{
try_rmdir_r (td);
}
catch (const system_error& e)
{
cerr << "unable to remove " << td << ": " << e << endl;
return 1;
}
assert (try_mkdir (td) == mkdir_status::success);
// Prepare the target file.
//
path fn ("target");
path fp (td / fn);
{
ofdstream ofs (fp);
ofs << text;
ofs.close ();
}
// Create the file hard link.
//
assert (link_file (fp, td / path ("hlink"), true, true));
#ifndef _WIN32
// Create the file symlink using an absolute path.
//
assert (link_file (fp, td / path ("slink"), false, true));
// Create the file symlink using a relative path.
//
assert (link_file (fn, td / path ("rslink"), false, true));
// Create the file symlink using an unexistent file path.
//
assert (link_file (fp + "-a", td / path ("sa"), false, false));
#endif
// Prepare the target directory.
//
dir_path dn ("dir");
dir_path dp (td / dn);
assert (try_mkdir (dp) == mkdir_status::success);
{
ofdstream ofs (dp / path ("f"));
ofs << text;
ofs.close ();
}
#ifndef _WIN32
assert (link_file (fp, dp / path ("hlink"), true, true));
assert (link_file (fp, dp / path ("slink"), false, true));
#endif
// Create the directory symlink using an absolute path.
//
dir_path ld (td / dir_path ("dslink"));
assert (link_dir (dp, ld, false, true));
rmsymlink (ld);
#ifndef _WIN32
// Create the directory symlink using an unexistent directory path.
//
assert (link_dir (dp / dir_path ("a"), td / dir_path ("dsa"), false, false));
// Create the directory symlink using a relative path.
//
assert (link_dir (dn, td / dir_path ("rdslink"), false, true));
#endif
try
{
rmdir_r (td);
}
catch (const system_error& e)
{
cerr << "unable to remove " << td << ": " << e << endl;
return 1;
}
}
|
