1 /*-
2 * Copyright (c) 2015 Jilles Tjoelker
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include <sys/stat.h>
29
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <time.h>
33
34 #ifndef UTIME_NOW
35 #define UTIME_NOW -1
36 #define UTIME_OMIT -2
37 #endif
38
39 int
futimens(int fd,const struct timespec times[2])40 futimens(int fd, const struct timespec times[2])
41 {
42 struct timeval now, tv[2], *tvp;
43 struct stat sb;
44 int osreldate;
45
46 if (times == NULL || (times[0].tv_nsec == UTIME_NOW &&
47 times[1].tv_nsec == UTIME_NOW))
48 tvp = NULL;
49 else if (times[0].tv_nsec == UTIME_OMIT &&
50 times[1].tv_nsec == UTIME_OMIT)
51 return (0);
52 else {
53 if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) &&
54 times[0].tv_nsec != UTIME_NOW &&
55 times[0].tv_nsec != UTIME_OMIT) {
56 errno = EINVAL;
57 return (-1);
58 }
59 if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) &&
60 times[1].tv_nsec != UTIME_NOW &&
61 times[1].tv_nsec != UTIME_OMIT) {
62 errno = EINVAL;
63 return (-1);
64 }
65 tv[0].tv_sec = times[0].tv_sec;
66 tv[0].tv_usec = times[0].tv_nsec / 1000;
67 tv[1].tv_sec = times[1].tv_sec;
68 tv[1].tv_usec = times[1].tv_nsec / 1000;
69 tvp = tv;
70 if (times[0].tv_nsec == UTIME_OMIT ||
71 times[1].tv_nsec == UTIME_OMIT) {
72 if (fstat(fd, &sb) == -1)
73 return (-1);
74 if (times[0].tv_nsec == UTIME_OMIT) {
75 tv[0].tv_sec = sb.st_atim.tv_sec;
76 tv[0].tv_usec = sb.st_atim.tv_nsec / 1000;
77 }
78 if (times[1].tv_nsec == UTIME_OMIT) {
79 tv[1].tv_sec = sb.st_mtim.tv_sec;
80 tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000;
81 }
82 }
83 if (times[0].tv_nsec == UTIME_NOW ||
84 times[1].tv_nsec == UTIME_NOW) {
85 if (gettimeofday(&now, NULL) == -1)
86 return (-1);
87 if (times[0].tv_nsec == UTIME_NOW)
88 tv[0] = now;
89 if (times[1].tv_nsec == UTIME_NOW)
90 tv[1] = now;
91 }
92 }
93 return (futimes(fd, tvp));
94 }
95