1 /* Test of <stat-time.h>.
2 Copyright (C) 2007-2009 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by James Youngman <jay@gnu.org>, 2007. */
21 #include "stat-time.h"
30 #define ASSERT(expr) \
35 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
45 force_unlink (const char *filename)
47 /* This chmod is necessary on mingw, where unlink() of a read-only file
49 chmod (filename, 0600);
50 return unlink (filename);
56 /* Remove temporary files. */
57 force_unlink ("t-stt-stamp1");
58 force_unlink ("t-stt-testfile");
59 force_unlink ("t-stt-stamp2");
60 force_unlink ("t-stt-renamed");
61 force_unlink ("t-stt-stamp3");
68 open_file (const char *filename, int flags)
70 int fd = open (filename, flags | O_WRONLY, 0500);
83 create_file (const char *filename)
85 ASSERT (open_file (filename, O_CREAT | O_EXCL));
89 do_stat (const char *filename, struct stat *p)
91 ASSERT (stat (filename, p) == 0);
94 /* Sleep long enough to notice a timestamp difference on the file
95 system in the current directory. */
100 /* Assume the worst case file system of FAT, which has a granularity
103 #else /* HAVE_USLEEP */
107 /* Initialize only once, by sleeping for 20 milliseconds (needed
108 since xfs has a quantization of about 10 milliseconds, even
109 though it has a granularity of 1 nanosecond, and since NTFS
110 has a default quantization of 15.25 milliseconds, even though
111 it has a granularity of 100 nanoseconds). If the seconds
112 differ, repeat the test one more time (in case we crossed a
113 quantization boundary on a file system with 1 second
114 resolution). If we can't observe a difference in only the
115 nanoseconds, then fall back to 2 seconds. However, note that
116 usleep (2000000) is allowed to fail with EINVAL. */
119 ASSERT (stat ("t-stt-stamp1", &st1) == 0);
120 ASSERT (force_unlink ("t-stt-stamp1") == 0);
123 create_file ("t-stt-stamp1");
124 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
125 if (st1.st_mtime != st2.st_mtime)
127 /* Seconds differ, give it one more shot. */
129 ASSERT (force_unlink ("t-stt-stamp1") == 0);
131 create_file ("t-stt-stamp1");
132 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
134 if (! (st1.st_mtime == st2.st_mtime
135 && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2)))
138 if (delay == 2000000)
142 #endif /* HAVE_USLEEP */
146 prepare_test (struct stat *statinfo, struct timespec *modtimes)
150 create_file ("t-stt-stamp1");
152 create_file ("t-stt-testfile");
154 create_file ("t-stt-stamp2");
156 ASSERT (chmod ("t-stt-testfile", 0400) == 0);
158 create_file ("t-stt-stamp3");
160 do_stat ("t-stt-stamp1", &statinfo[0]);
161 do_stat ("t-stt-testfile", &statinfo[1]);
162 do_stat ("t-stt-stamp2", &statinfo[2]);
163 do_stat ("t-stt-stamp3", &statinfo[3]);
165 /* Now use our access functions. */
166 for (i = 0; i < NFILES; ++i)
168 modtimes[i] = get_stat_mtime (&statinfo[i]);
173 test_mtime (const struct stat *statinfo, struct timespec *modtimes)
177 /* Use the struct stat fields directly. */
178 /* mtime(stamp1) < mtime(stamp2) */
179 ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
180 || (statinfo[0].st_mtime == statinfo[2].st_mtime
181 && (get_stat_mtime_ns (&statinfo[0])
182 < get_stat_mtime_ns (&statinfo[2]))));
183 /* mtime(stamp2) < mtime(stamp3) */
184 ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
185 || (statinfo[2].st_mtime == statinfo[3].st_mtime
186 && (get_stat_mtime_ns (&statinfo[2])
187 < get_stat_mtime_ns (&statinfo[3]))));
189 /* Now check the result of the access functions. */
190 /* mtime(stamp1) < mtime(stamp2) */
191 ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
192 || (modtimes[0].tv_sec == modtimes[2].tv_sec
193 && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
194 /* mtime(stamp2) < mtime(stamp3) */
195 ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
196 || (modtimes[2].tv_sec == modtimes[3].tv_sec
197 && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
199 /* verify equivalence */
200 for (i = 0; i < NFILES; ++i)
203 ts = get_stat_mtime (&statinfo[i]);
204 ASSERT (ts.tv_sec == statinfo[i].st_mtime);
208 #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
209 /* Skip the ctime tests on native Windows platforms, because their
210 st_ctime is either the same as st_mtime (plus or minus an offset)
211 or set to the file _creation_ time, and is not influenced by rename
213 # define test_ctime(ignored) ((void) 0)
216 test_ctime (const struct stat *statinfo)
218 /* On some buggy NFS clients, mtime and ctime are disproportionately
219 skewed from one another. Skip this test in that case. */
220 if (statinfo[0].st_mtime != statinfo[0].st_ctime)
223 /* mtime(stamp2) < ctime(renamed) */
224 ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
225 || (statinfo[2].st_mtime == statinfo[1].st_ctime
226 && (get_stat_mtime_ns (&statinfo[2])
227 < get_stat_ctime_ns (&statinfo[1]))));
232 test_birthtime (const struct stat *statinfo,
233 const struct timespec *modtimes,
234 struct timespec *birthtimes)
238 /* Collect the birth times. */
239 for (i = 0; i < NFILES; ++i)
241 birthtimes[i] = get_stat_birthtime (&statinfo[i]);
242 if (birthtimes[i].tv_nsec < 0)
246 /* mtime(stamp1) < birthtime(renamed) */
247 ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
248 || (modtimes[0].tv_sec == birthtimes[1].tv_sec
249 && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
250 /* birthtime(renamed) < mtime(stamp2) */
251 ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
252 || (birthtimes[1].tv_sec == modtimes[2].tv_sec
253 && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
259 struct stat statinfo[NFILES];
260 struct timespec modtimes[NFILES];
261 struct timespec birthtimes[NFILES];
264 signal (SIGHUP, cleanup);
267 signal (SIGINT, cleanup);
270 signal (SIGQUIT, cleanup);
273 signal (SIGTERM, cleanup);
277 prepare_test (statinfo, modtimes);
278 test_mtime (statinfo, modtimes);
279 test_ctime (statinfo);
280 test_birthtime (statinfo, modtimes, birthtimes);