1 /* Test of file timestamp modification functions.
2 Copyright (C) 2009-2018 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 utimens(a,b) and
20 utimensat(AT_FDCWD,a,b,0). FUNC is the function to test. Assumes
21 that BASE and ASSERT are already defined. If PRINT, warn before
22 skipping tests with status 77. */
23 static int
test_utimens(int (* func)(char const *,struct timespec const *),bool print)24 test_utimens (int (*func) (char const *, struct timespec const *), bool print)
25 {
26 struct stat st1;
27 struct stat st2;
28
29 ASSERT (close (creat (BASE "file", 0600)) == 0);
30 /* If utimens truncates to less resolution than the file system
31 supports, then time can appear to go backwards between now and a
32 follow-up utimens with UTIME_NOW or a NULL timespec. Use
33 UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
34 source. */
35 ASSERT (stat (BASE "file", &st1) == 0);
36 nap ();
37 ASSERT (func (BASE "file", NULL) == 0);
38 ASSERT (stat (BASE "file", &st2) == 0);
39 ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
40 if (check_ctime)
41 ASSERT (ctime_compare (&st1, &st2) < 0);
42 {
43 /* On some NFS systems, the 'now' timestamp of creat or a NULL
44 timespec is determined by the server, but the 'now' timestamp
45 determined by gettime() (as is done when using UTIME_NOW) is
46 determined by the client; since the two machines are not
47 necessarily on the same clock, this is another case where time
48 can appear to go backwards. The rest of this test cares about
49 client time, so manually use gettime() to set both times. */
50 struct timespec ts[2];
51 gettime (&ts[0]);
52 ts[1] = ts[0];
53 ASSERT (func (BASE "file", ts) == 0);
54 ASSERT (stat (BASE "file", &st1) == 0);
55 nap ();
56 }
57
58 /* Invalid arguments. */
59 errno = 0;
60 ASSERT (func ("no_such", NULL) == -1);
61 ASSERT (errno == ENOENT);
62 errno = 0;
63 ASSERT (func ("no_such/", NULL) == -1);
64 ASSERT (errno == ENOENT || errno == ENOTDIR);
65 errno = 0;
66 ASSERT (func ("", NULL) == -1);
67 ASSERT (errno == ENOENT);
68 {
69 struct timespec ts[2];
70 ts[0].tv_sec = Y2K;
71 ts[0].tv_nsec = UTIME_BOGUS_POS;
72 ts[1].tv_sec = Y2K;
73 ts[1].tv_nsec = 0;
74 errno = 0;
75 ASSERT (func (BASE "file", ts) == -1);
76 ASSERT (errno == EINVAL);
77 }
78 {
79 struct timespec ts[2];
80 ts[0].tv_sec = Y2K;
81 ts[0].tv_nsec = 0;
82 ts[1].tv_sec = Y2K;
83 ts[1].tv_nsec = UTIME_BOGUS_NEG;
84 errno = 0;
85 ASSERT (func (BASE "file", ts) == -1);
86 ASSERT (errno == EINVAL);
87 }
88 {
89 struct timespec ts[2];
90 ts[0].tv_sec = Y2K;
91 ts[0].tv_nsec = 0;
92 ts[1] = ts[0];
93 errno = 0;
94 ASSERT (func (BASE "file/", ts) == -1);
95 ASSERT (errno == ENOTDIR || errno == EINVAL);
96 }
97 ASSERT (stat (BASE "file", &st2) == 0);
98 ASSERT (st1.st_atime == st2.st_atime);
99 ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
100 ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
101
102 /* Set both times. */
103 {
104 struct timespec ts[2];
105 ts[0].tv_sec = Y2K;
106 ts[0].tv_nsec = BILLION / 2 - 1;
107 ts[1].tv_sec = Y2K;
108 ts[1].tv_nsec = 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);
117 if (check_ctime)
118 ASSERT (ctime_compare (&st1, &st2) < 0);
119 }
120
121 /* Play with UTIME_OMIT, UTIME_NOW. */
122 {
123 struct stat st3;
124 struct timespec ts[2];
125 ts[0].tv_sec = BILLION;
126 ts[0].tv_nsec = UTIME_OMIT;
127 ts[1].tv_sec = 0;
128 ts[1].tv_nsec = UTIME_NOW;
129 nap ();
130 ASSERT (func (BASE "file", ts) == 0);
131 ASSERT (stat (BASE "file", &st3) == 0);
132 ASSERT (st3.st_atime == Y2K);
133 ASSERT (0 <= get_stat_atime_ns (&st3));
134 ASSERT (get_stat_atime_ns (&st3) < BILLION / 2);
135 /* See comment above about this utimecmp call. */
136 ASSERT (0 <= utimecmp (BASE "file", &st3, &st1, UTIMECMP_TRUNCATE_SOURCE));
137 if (check_ctime)
138 ASSERT (ctime_compare (&st2, &st3) < 0);
139 nap ();
140 ts[0].tv_nsec = 0;
141 ts[1].tv_nsec = UTIME_OMIT;
142 ASSERT (func (BASE "file", ts) == 0);
143 ASSERT (stat (BASE "file", &st2) == 0);
144 ASSERT (st2.st_atime == BILLION);
145 ASSERT (get_stat_atime_ns (&st2) == 0);
146 ASSERT (st3.st_mtime == st2.st_mtime);
147 ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
148 if (check_ctime)
149 ASSERT (ctime_compare (&st3, &st2) < 0);
150 }
151
152 /* Make sure this dereferences symlinks. */
153 if (symlink (BASE "file", BASE "link"))
154 {
155 ASSERT (unlink (BASE "file") == 0);
156 if (print)
157 fputs ("skipping test: symlinks not supported on this file system\n",
158 stderr);
159 return 77;
160 }
161 ASSERT (lstat (BASE "link", &st1) == 0);
162 ASSERT (st1.st_mtime != Y2K);
163 errno = 0;
164 ASSERT (func (BASE "link/", NULL) == -1);
165 ASSERT (errno == ENOTDIR);
166 {
167 struct timespec ts[2];
168 ts[0].tv_sec = Y2K;
169 ts[0].tv_nsec = 0;
170 ts[1] = ts[0];
171 ASSERT (func (BASE "link", ts) == 0);
172 ASSERT (lstat (BASE "link", &st2) == 0);
173 /* Can't compare atimes, since lstat() changes symlink atime on cygwin. */
174 ASSERT (st1.st_mtime == st2.st_mtime);
175 ASSERT (stat (BASE "link", &st2) == 0);
176 ASSERT (st2.st_mtime == Y2K);
177 ASSERT (get_stat_mtime_ns (&st2) == 0);
178 }
179
180 /* Cleanup. */
181 ASSERT (unlink (BASE "link") == 0);
182 ASSERT (unlink (BASE "file") == 0);
183 return 0;
184 }
185