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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/* Test of <stat-time.h>.
Copyright (C) 2007-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by James Youngman <jay@gnu.org>, 2007. */
#include <config.h>
#include "stat-time.h"
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include "macros.h"
#define BASE "test-stat-time.t"
#include "nap.h"
enum { NFILES = 4 };
static char filename_stamp1[50];
static char filename_testfile[50];
static char filename_stamp2[50];
static char filename_stamp3[50];
/* Use file names that are different at each run.
This is necessary for test_birthtime() to pass on native Windows:
On this platform, the file system apparently remembers the creation time
of a file even after it is removed and created anew. See
"Windows NT Contains File System Tunneling Capabilities"
<https://support.microsoft.com/en-us/help/172190/> */
static void
initialize_filenames (void)
{
long t = (long) time (NULL);
sprintf (filename_stamp1, "t-stt-%ld-stamp1", t);
sprintf (filename_testfile, "t-stt-%ld-testfile", t);
sprintf (filename_stamp2, "t-stt-%ld-stamp2", t);
sprintf (filename_stamp3, "t-stt-%ld-stamp3", t);
}
static int
force_unlink (const char *filename)
{
/* This chmod is necessary on mingw, where unlink() of a read-only file
fails with EPERM. */
chmod (filename, 0600);
return unlink (filename);
}
static void
cleanup (int sig)
{
/* Remove temporary files. */
force_unlink (filename_stamp1);
force_unlink (filename_testfile);
force_unlink (filename_stamp2);
force_unlink (filename_stamp3);
if (sig != 0)
_exit (1);
}
static int
open_file (const char *filename, int flags)
{
int fd = open (filename, flags | O_WRONLY, 0500);
if (fd >= 0)
{
close (fd);
return 1;
}
else
{
return 0;
}
}
static void
create_file (const char *filename)
{
ASSERT (open_file (filename, O_CREAT | O_EXCL));
}
static void
do_stat (const char *filename, struct stat *p)
{
ASSERT (stat (filename, p) == 0);
}
static void
prepare_test (struct stat *statinfo, struct timespec *modtimes)
{
int i;
create_file (filename_stamp1);
nap ();
create_file (filename_testfile);
nap ();
create_file (filename_stamp2);
nap ();
ASSERT (chmod (filename_testfile, 0400) == 0);
nap ();
create_file (filename_stamp3);
do_stat (filename_stamp1, &statinfo[0]);
do_stat (filename_testfile, &statinfo[1]);
do_stat (filename_stamp2, &statinfo[2]);
do_stat (filename_stamp3, &statinfo[3]);
/* Now use our access functions. */
for (i = 0; i < NFILES; ++i)
{
modtimes[i] = get_stat_mtime (&statinfo[i]);
}
}
static void
test_mtime (const struct stat *statinfo, struct timespec *modtimes)
{
int i;
/* Use the struct stat fields directly. */
/* mtime(stamp1) < mtime(stamp2) */
ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
|| (statinfo[0].st_mtime == statinfo[2].st_mtime
&& (get_stat_mtime_ns (&statinfo[0])
< get_stat_mtime_ns (&statinfo[2]))));
/* mtime(stamp2) < mtime(stamp3) */
ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
|| (statinfo[2].st_mtime == statinfo[3].st_mtime
&& (get_stat_mtime_ns (&statinfo[2])
< get_stat_mtime_ns (&statinfo[3]))));
/* Now check the result of the access functions. */
/* mtime(stamp1) < mtime(stamp2) */
ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
|| (modtimes[0].tv_sec == modtimes[2].tv_sec
&& modtimes[0].tv_nsec < modtimes[2].tv_nsec));
/* mtime(stamp2) < mtime(stamp3) */
ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
|| (modtimes[2].tv_sec == modtimes[3].tv_sec
&& modtimes[2].tv_nsec < modtimes[3].tv_nsec));
/* verify equivalence */
for (i = 0; i < NFILES; ++i)
{
struct timespec ts;
ts = get_stat_mtime (&statinfo[i]);
ASSERT (ts.tv_sec == statinfo[i].st_mtime);
}
}
#if defined _WIN32 && !defined __CYGWIN__
/* Skip the ctime tests on native Windows platforms, because their
st_ctime is either the same as st_mtime (plus or minus an offset)
or set to the file _creation_ time, and is not influenced by rename
or chmod. */
# define test_ctime(ignored) ((void) 0)
#else
static void
test_ctime (const struct stat *statinfo)
{
/* On some buggy NFS clients, mtime and ctime are disproportionately
skewed from one another. Skip this test in that case. */
if (statinfo[0].st_mtime != statinfo[0].st_ctime)
return;
/* mtime(stamp2) < ctime(testfile) */
ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
|| (statinfo[2].st_mtime == statinfo[1].st_ctime
&& (get_stat_mtime_ns (&statinfo[2])
< get_stat_ctime_ns (&statinfo[1]))));
}
#endif
static void
test_birthtime (const struct stat *statinfo,
const struct timespec *modtimes,
struct timespec *birthtimes)
{
int i;
/* Collect the birth times. */
for (i = 0; i < NFILES; ++i)
{
birthtimes[i] = get_stat_birthtime (&statinfo[i]);
if (birthtimes[i].tv_nsec < 0)
return;
}
/* mtime(stamp1) < birthtime(testfile) */
ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
|| (modtimes[0].tv_sec == birthtimes[1].tv_sec
&& modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
/* birthtime(testfile) < mtime(stamp2) */
ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
|| (birthtimes[1].tv_sec == modtimes[2].tv_sec
&& birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
}
int
main (void)
{
struct stat statinfo[NFILES];
struct timespec modtimes[NFILES];
struct timespec birthtimes[NFILES];
initialize_filenames ();
#ifdef SIGHUP
signal (SIGHUP, cleanup);
#endif
#ifdef SIGINT
signal (SIGINT, cleanup);
#endif
#ifdef SIGQUIT
signal (SIGQUIT, cleanup);
#endif
#ifdef SIGTERM
signal (SIGTERM, cleanup);
#endif
cleanup (0);
prepare_test (statinfo, modtimes);
test_mtime (statinfo, modtimes);
test_ctime (statinfo);
test_birthtime (statinfo, modtimes, birthtimes);
cleanup (0);
return 0;
}
|
