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. */
102 /* Initialize only once, by sleeping for 20 milliseconds (needed
103 since xfs has a quantization of about 10 milliseconds, even
104 though it has a granularity of 1 nanosecond, and since NTFS
105 has a default quantization of 15.25 milliseconds, even though
106 it has a granularity of 100 nanoseconds). If the seconds
107 differ, repeat the test one more time (in case we crossed a
108 quantization boundary on a file system with 1 second
109 resolution). If we can't observe a difference in only the
110 nanoseconds, then fall back to 1 second if the time is odd,
111 and 2 seconds (needed for FAT) if time is even. */
114 ASSERT (stat ("t-stt-stamp1", &st1) == 0);
115 ASSERT (force_unlink ("t-stt-stamp1") == 0);
118 create_file ("t-stt-stamp1");
119 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
120 if (st1.st_mtime != st2.st_mtime)
122 /* Seconds differ, give it one more shot. */
124 ASSERT (force_unlink ("t-stt-stamp1") == 0);
126 create_file ("t-stt-stamp1");
127 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
129 if (! (st1.st_mtime == st2.st_mtime
130 && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2)))
131 delay = (st1.st_mtime & 1) ? 1000000 : 2000000;
137 prepare_test (struct stat *statinfo, struct timespec *modtimes)
141 create_file ("t-stt-stamp1");
143 create_file ("t-stt-testfile");
145 create_file ("t-stt-stamp2");
147 ASSERT (chmod ("t-stt-testfile", 0400) == 0);
149 create_file ("t-stt-stamp3");
151 do_stat ("t-stt-stamp1", &statinfo[0]);
152 do_stat ("t-stt-testfile", &statinfo[1]);
153 do_stat ("t-stt-stamp2", &statinfo[2]);
154 do_stat ("t-stt-stamp3", &statinfo[3]);
156 /* Now use our access functions. */
157 for (i = 0; i < NFILES; ++i)
159 modtimes[i] = get_stat_mtime (&statinfo[i]);
164 test_mtime (const struct stat *statinfo, struct timespec *modtimes)
168 /* Use the struct stat fields directly. */
169 /* mtime(stamp1) < mtime(stamp2) */
170 ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
171 || (statinfo[0].st_mtime == statinfo[2].st_mtime
172 && (get_stat_mtime_ns (&statinfo[0])
173 < get_stat_mtime_ns (&statinfo[2]))));
174 /* mtime(stamp2) < mtime(stamp3) */
175 ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
176 || (statinfo[2].st_mtime == statinfo[3].st_mtime
177 && (get_stat_mtime_ns (&statinfo[2])
178 < get_stat_mtime_ns (&statinfo[3]))));
180 /* Now check the result of the access functions. */
181 /* mtime(stamp1) < mtime(stamp2) */
182 ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
183 || (modtimes[0].tv_sec == modtimes[2].tv_sec
184 && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
185 /* mtime(stamp2) < mtime(stamp3) */
186 ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
187 || (modtimes[2].tv_sec == modtimes[3].tv_sec
188 && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
190 /* verify equivalence */
191 for (i = 0; i < NFILES; ++i)
194 ts = get_stat_mtime (&statinfo[i]);
195 ASSERT (ts.tv_sec == statinfo[i].st_mtime);
199 #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
200 /* Skip the ctime tests on native Windows platforms, because their
201 st_ctime is either the same as st_mtime (plus or minus an offset)
202 or set to the file _creation_ time, and is not influenced by rename
204 # define test_ctime(ignored) ((void) 0)
207 test_ctime (const struct stat *statinfo)
209 /* On some buggy NFS clients, mtime and ctime are disproportionately
210 skewed from one another. Skip this test in that case. */
211 if (statinfo[0].st_mtime != statinfo[0].st_ctime)
214 /* mtime(stamp2) < ctime(renamed) */
215 ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
216 || (statinfo[2].st_mtime == statinfo[1].st_ctime
217 && (get_stat_mtime_ns (&statinfo[2])
218 < get_stat_ctime_ns (&statinfo[1]))));
223 test_birthtime (const struct stat *statinfo,
224 const struct timespec *modtimes,
225 struct timespec *birthtimes)
229 /* Collect the birth times. */
230 for (i = 0; i < NFILES; ++i)
232 birthtimes[i] = get_stat_birthtime (&statinfo[i]);
233 if (birthtimes[i].tv_nsec < 0)
237 /* mtime(stamp1) < birthtime(renamed) */
238 ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
239 || (modtimes[0].tv_sec == birthtimes[1].tv_sec
240 && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
241 /* birthtime(renamed) < mtime(stamp2) */
242 ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
243 || (birthtimes[1].tv_sec == modtimes[2].tv_sec
244 && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
250 struct stat statinfo[NFILES];
251 struct timespec modtimes[NFILES];
252 struct timespec birthtimes[NFILES];
255 signal (SIGHUP, cleanup);
258 signal (SIGINT, cleanup);
261 signal (SIGQUIT, cleanup);
264 signal (SIGTERM, cleanup);
268 prepare_test (statinfo, modtimes);
269 test_mtime (statinfo, modtimes);
270 test_ctime (statinfo);
271 test_birthtime (statinfo, modtimes, birthtimes);