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 15 milliseconds (needed
108 since xfs has a quantization of about 10 milliseconds, even
109 though it has a granularity of 1 nanosecond). If the seconds
110 differ, repeat the test one more time (in case we crossed a
111 quantization boundary on a file system with 1 second
112 resolution). If we can't observe a difference in only the
113 nanoseconds, then fall back to 2 seconds. However, note that
114 usleep (2000000) is allowed to fail with EINVAL. */
117 ASSERT (stat ("t-stt-stamp1", &st1) == 0);
118 ASSERT (force_unlink ("t-stt-stamp1") == 0);
121 create_file ("t-stt-stamp1");
122 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
123 if (st1.st_mtime != st2.st_mtime)
125 /* Seconds differ, give it one more shot. */
127 ASSERT (force_unlink ("t-stt-stamp1") == 0);
129 create_file ("t-stt-stamp1");
130 ASSERT (stat ("t-stt-stamp1", &st2) == 0);
132 if (! (st1.st_mtime == st2.st_mtime
133 && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2)))
136 if (delay == 2000000)
140 #endif /* HAVE_USLEEP */
144 prepare_test (struct stat *statinfo, struct timespec *modtimes)
148 create_file ("t-stt-stamp1");
150 create_file ("t-stt-testfile");
152 create_file ("t-stt-stamp2");
154 ASSERT (chmod ("t-stt-testfile", 0400) == 0);
156 create_file ("t-stt-stamp3");
158 do_stat ("t-stt-stamp1", &statinfo[0]);
159 do_stat ("t-stt-testfile", &statinfo[1]);
160 do_stat ("t-stt-stamp2", &statinfo[2]);
161 do_stat ("t-stt-stamp3", &statinfo[3]);
163 /* Now use our access functions. */
164 for (i = 0; i < NFILES; ++i)
166 modtimes[i] = get_stat_mtime (&statinfo[i]);
171 test_mtime (const struct stat *statinfo, struct timespec *modtimes)
175 /* Use the struct stat fields directly. */
176 /* mtime(stamp1) < mtime(stamp2) */
177 ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
178 || (statinfo[0].st_mtime == statinfo[2].st_mtime
179 && (get_stat_mtime_ns (&statinfo[0])
180 < get_stat_mtime_ns (&statinfo[2]))));
181 /* mtime(stamp2) < mtime(stamp3) */
182 ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
183 || (statinfo[2].st_mtime == statinfo[3].st_mtime
184 && (get_stat_mtime_ns (&statinfo[2])
185 < get_stat_mtime_ns (&statinfo[3]))));
187 /* Now check the result of the access functions. */
188 /* mtime(stamp1) < mtime(stamp2) */
189 ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
190 || (modtimes[0].tv_sec == modtimes[2].tv_sec
191 && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
192 /* mtime(stamp2) < mtime(stamp3) */
193 ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
194 || (modtimes[2].tv_sec == modtimes[3].tv_sec
195 && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
197 /* verify equivalence */
198 for (i = 0; i < NFILES; ++i)
201 ts = get_stat_mtime (&statinfo[i]);
202 ASSERT (ts.tv_sec == statinfo[i].st_mtime);
206 #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
207 /* Skip the ctime tests on native Windows platforms, because their
208 st_ctime is either the same as st_mtime (plus or minus an offset)
209 or set to the file _creation_ time, and is not influenced by rename
211 # define test_ctime(ignored) ((void) 0)
214 test_ctime (const struct stat *statinfo)
216 /* On some buggy NFS clients, mtime and ctime are disproportionately
217 skewed from one another. Skip this test in that case. */
218 if (statinfo[0].st_mtime != statinfo[0].st_ctime)
221 /* mtime(stamp2) < ctime(renamed) */
222 ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
223 || (statinfo[2].st_mtime == statinfo[1].st_ctime
224 && (get_stat_mtime_ns (&statinfo[2])
225 < get_stat_ctime_ns (&statinfo[1]))));
230 test_birthtime (const struct stat *statinfo,
231 const struct timespec *modtimes,
232 struct timespec *birthtimes)
236 /* Collect the birth times. */
237 for (i = 0; i < NFILES; ++i)
239 birthtimes[i] = get_stat_birthtime (&statinfo[i]);
240 if (birthtimes[i].tv_nsec < 0)
244 /* mtime(stamp1) < birthtime(renamed) */
245 ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
246 || (modtimes[0].tv_sec == birthtimes[1].tv_sec
247 && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
248 /* birthtime(renamed) < mtime(stamp2) */
249 ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
250 || (birthtimes[1].tv_sec == modtimes[2].tv_sec
251 && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
257 struct stat statinfo[NFILES];
258 struct timespec modtimes[NFILES];
259 struct timespec birthtimes[NFILES];
262 signal (SIGHUP, cleanup);
265 signal (SIGINT, cleanup);
268 signal (SIGQUIT, cleanup);
271 signal (SIGTERM, cleanup);
275 prepare_test (statinfo, modtimes);
276 test_mtime (statinfo, modtimes);
277 test_ctime (statinfo);
278 test_birthtime (statinfo, modtimes, birthtimes);