1 /* Test of file timestamp modification functions.
2 Copyright (C) 2009-2023 Free Software Foundation, Inc.
3
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.
8
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.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 #include "test-utimens-common.h"
18
19 /* This file is designed to test both fdutimens(a,NULL,b) and
20 futimens(a,b). FUNC is the function to test. Assumes that BASE
21 and ASSERT are already defined. If PRINT, warn before skipping
22 tests with status 77. */
23 static int
24 test_futimens (int (*func) (int, struct timespec const *),
25 bool print)
26 {
27 int fd = creat (BASE "file", 0600);
28 int result;
29 struct stat st1;
30 struct stat st2;
31 ASSERT (0 <= fd);
32
33 /* Sanity check. */
34 ASSERT (fstat (fd, &st1) == 0);
35 nap ();
36 errno = 0;
37 result = func (fd, NULL);
38 if (result == -1 && errno == ENOSYS)
39 {
40 ASSERT (close (fd) == 0);
41 ASSERT (unlink (BASE "file") == 0);
42 if (print)
43 fputs ("skipping test: "
44 "setting fd time not supported on this file system\n",
45 stderr);
46 return 77;
47 }
48 ASSERT (!result);
49 ASSERT (fstat (fd, &st2) == 0);
50 /* If utimens truncates to worse resolution than the file system
51 supports, then time can appear to go backwards between now and a
52 follow-up utimens with UTIME_NOW or a NULL timespec. Use
53 UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
54 source. */
55 ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
56 if (check_ctime)
57 ASSERT (ctime_compare (&st1, &st2) < 0);
58 {
59 /* On some NFS systems, the 'now' timestamp of creat or a NULL
60 timespec is determined by the server, but the 'now' timestamp
61 determined by gettime() (as is done when using UTIME_NOW) is
62 determined by the client; since the two machines are not
63 necessarily on the same clock, this is another case where time
64 can appear to go backwards. The rest of this test cares about
65 client time, so manually use gettime() to set both times. */
66 struct timespec ts[2];
67 gettime (&ts[0]);
68 ts[1] = ts[0];
69 ASSERT (func (fd, ts) == 0);
70 ASSERT (fstat (fd, &st1) == 0);
71 nap ();
72 }
73
74 /* Invalid arguments. */
75 {
76 errno = 0;
77 ASSERT (func (AT_FDCWD, NULL) == -1);
78 ASSERT (errno == EBADF);
79 }
80 {
81 errno = 0;
82 ASSERT (func (-1, NULL) == -1);
83 ASSERT (errno == EBADF);
84 }
85 {
86 close (99);
87 errno = 0;
88 ASSERT (func (99, NULL) == -1);
89 ASSERT (errno == EBADF);
90 }
91 {
92 int fd0 = dup (0);
93 ASSERT (0 <= fd0);
94 ASSERT (close (fd0) == 0);
95 errno = 0;
96 ASSERT (func (fd0, NULL) == -1);
97 ASSERT (errno == EBADF);
98 }
99 {
100 struct timespec ts[2];
101 ts[0].tv_sec = Y2K;
102 ts[0].tv_nsec = UTIME_BOGUS_POS;
103 ts[1].tv_sec = Y2K;
104 ts[1].tv_nsec = 0;
105 errno = 0;
106 ASSERT (func (fd, ts) == -1);
107 ASSERT (errno == EINVAL);
108 }
109 {
110 struct timespec ts[2];
111 ts[0].tv_sec = Y2K;
112 ts[0].tv_nsec = 0;
113 ts[1].tv_sec = Y2K;
114 ts[1].tv_nsec = UTIME_BOGUS_NEG;
115 errno = 0;
116 ASSERT (func (fd, ts) == -1);
117 ASSERT (errno == EINVAL);
118 }
119 ASSERT (fstat (fd, &st2) == 0);
120 ASSERT (st1.st_atime == st2.st_atime);
121 ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
122 ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
123
124 /* Set both times. */
125 {
126 struct timespec ts[2];
127 ts[0].tv_sec = Y2K;
128 ts[0].tv_nsec = BILLION / 2 - 1;
129 ts[1].tv_sec = Y2K;
130 ts[1].tv_nsec = BILLION - 1;
131 ASSERT (func (fd, ts) == 0);
132 ASSERT (fstat (fd, &st2) == 0);
133 ASSERT (st2.st_atime == Y2K);
134 ASSERT (0 <= get_stat_atime_ns (&st2));
135 ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
136 ASSERT (st2.st_mtime == Y2K);
137 ASSERT (0 <= get_stat_mtime_ns (&st2));
138 ASSERT (get_stat_mtime_ns (&st2) < BILLION);
139 if (check_ctime)
140 ASSERT (ctime_compare (&st1, &st2) < 0);
141 }
142
143 /* Play with UTIME_OMIT, UTIME_NOW. */
144 {
145 struct stat st3;
146 struct timespec ts[2];
147 ts[0].tv_sec = BILLION;
148 ts[0].tv_nsec = UTIME_OMIT;
149 ts[1].tv_sec = 0;
150 ts[1].tv_nsec = UTIME_NOW;
151 nap ();
152 ASSERT (func (fd, ts) == 0);
153 ASSERT (fstat (fd, &st3) == 0);
154 ASSERT (st3.st_atime == Y2K);
155 ASSERT (0 <= get_stat_atime_ns (&st3));
156 ASSERT (get_stat_atime_ns (&st3) <= BILLION / 2);
157 ASSERT (utimecmp (BASE "file", &st1, &st3, UTIMECMP_TRUNCATE_SOURCE) <= 0);
158 if (check_ctime)
159 ASSERT (ctime_compare (&st2, &st3) < 0);
160 nap ();
161 ts[0].tv_nsec = 0;
162 ts[1].tv_nsec = UTIME_OMIT;
163 ASSERT (func (fd, ts) == 0);
164 ASSERT (fstat (fd, &st2) == 0);
165 ASSERT (st2.st_atime == BILLION);
166 ASSERT (get_stat_atime_ns (&st2) == 0);
167 ASSERT (st3.st_mtime == st2.st_mtime);
168 ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
169 if (check_ctime > 0)
170 ASSERT (ctime_compare (&st3, &st2) < 0);
171 }
172
173 /* Cleanup. */
174 ASSERT (close (fd) == 0);
175 ASSERT (unlink (BASE "file") == 0);
176 return 0;
177 }