1 /* Test of file timestamp modification functions.
2 Copyright (C) 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 2 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 /* This file assumes that BASE and ASSERT are already defined. */
19 #ifndef GL_TEST_UTIMENS
20 # define GL_TEST_UTIMENS
27 #include "stat-time.h"
32 BILLION = 1000 * 1000 * 1000,
34 Y2K = 946684800, /* Jan 1, 2000, in seconds since epoch. */
36 /* Bogus positive and negative tv_nsec values closest to valid
37 range, but without colliding with UTIME_NOW or UTIME_OMIT. */
38 UTIME_BOGUS_POS = BILLION + ((UTIME_NOW == BILLION || UTIME_OMIT == BILLION)
39 ? (1 + (UTIME_NOW == BILLION + 1)
40 + (UTIME_OMIT == BILLION + 1))
42 UTIME_BOGUS_NEG = -1 - ((UTIME_NOW == -1 || UTIME_OMIT == -1)
43 ? (1 + (UTIME_NOW == -2) + (UTIME_OMIT == -2))
47 #endif /* GL_TEST_UTIMENS */
49 /* This function is designed to test both utimens(a,b) and
50 utimensat(AT_FDCWD,a,b,0). FUNC is the function to test. */
52 test_utimens (int (*func) (char const *, struct timespec const *))
57 ASSERT (close (creat (BASE "file", 0600)) == 0);
58 /* If utimens truncates to less resolution than the file system
59 supports, then time can appear to go backwards between now and a
60 follow-up utimens with UTIME_NOW or a NULL timespec. Use
61 UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
63 ASSERT (stat (BASE "file", &st1) == 0);
64 ASSERT (func (BASE "file", NULL) == 0);
65 ASSERT (stat (BASE "file", &st2) == 0);
66 ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
68 /* On some NFS systems, the 'now' timestamp of creat or a NULL
69 timespec is determined by the server, but the 'now' timestamp
70 determined by gettime() (as is done when using UTIME_OMIT) is
71 determined by the client; since the two machines are not
72 necessarily on the same clock, this is another case where time
73 can appear to go backwards. The rest of this test cares about
74 client time, so manually use gettime() to set both times. */
75 struct timespec ts[2];
78 ASSERT (func (BASE "file", ts) == 0);
79 ASSERT (stat (BASE "file", &st1) == 0);
82 /* Invalid arguments. */
84 ASSERT (func ("no_such", NULL) == -1);
85 ASSERT (errno == ENOENT);
87 ASSERT (func ("", NULL) == -1);
88 ASSERT (errno == ENOENT);
90 struct timespec ts[2] = { { Y2K, UTIME_BOGUS_POS }, { Y2K, 0 } };
92 ASSERT (func (BASE "file", ts) == -1);
93 ASSERT (errno == EINVAL);
96 struct timespec ts[2] = { { Y2K, 0 }, { Y2K, UTIME_BOGUS_NEG } };
98 ASSERT (func (BASE "file", ts) == -1);
99 ASSERT (errno == EINVAL);
101 ASSERT (stat (BASE "file", &st2) == 0);
102 ASSERT (st1.st_atime == st2.st_atime);
103 ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
104 ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
106 /* Set both times. */
108 struct timespec ts[2] = { { Y2K, BILLION / 2 - 1 }, { Y2K, BILLION - 1 } };
109 ASSERT (func (BASE "file", ts) == 0);
110 ASSERT (stat (BASE "file", &st2) == 0);
111 ASSERT (st2.st_atime == Y2K);
112 ASSERT (0 <= get_stat_atime_ns (&st2));
113 ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
114 ASSERT (st2.st_mtime == Y2K);
115 ASSERT (0 <= get_stat_mtime_ns (&st2));
116 ASSERT (get_stat_mtime_ns (&st2) < BILLION);
119 /* Play with UTIME_OMIT, UTIME_NOW. */
121 struct timespec ts[2] = { { BILLION, UTIME_OMIT }, { 0, UTIME_NOW } };
122 ASSERT (func (BASE "file", ts) == 0);
123 ASSERT (stat (BASE "file", &st2) == 0);
124 ASSERT (st2.st_atime == Y2K);
125 ASSERT (0 <= get_stat_atime_ns (&st2));
126 ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
127 /* See comment above about this utimecmp call. */
128 ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
132 ASSERT (unlink (BASE "file") == 0);