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 __FBSDID("$FreeBSD: stable/12/tools/build/futimens.c 301763 2016-06-09 21:57:34Z jilles $");
29
30 #include <sys/stat.h>
31
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <time.h>
35
36 #ifndef UTIME_NOW
37 #define UTIME_NOW -1
38 #define UTIME_OMIT -2
39 #endif
40
41 int
futimens(int fd,const struct timespec times[2])42 futimens(int fd, const struct timespec times[2])
43 {
44 struct timeval now, tv[2], *tvp;
45 struct stat sb;
46 int osreldate;
47
48 if (times == NULL || (times[0].tv_nsec == UTIME_NOW &&
49 times[1].tv_nsec == UTIME_NOW))
50 tvp = NULL;
51 else if (times[0].tv_nsec == UTIME_OMIT &&
52 times[1].tv_nsec == UTIME_OMIT)
53 return (0);
54 else {
55 if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) &&
56 times[0].tv_nsec != UTIME_NOW &&
57 times[0].tv_nsec != UTIME_OMIT) {
58 errno = EINVAL;
59 return (-1);
60 }
61 if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) &&
62 times[1].tv_nsec != UTIME_NOW &&
63 times[1].tv_nsec != UTIME_OMIT) {
64 errno = EINVAL;
65 return (-1);
66 }
67 tv[0].tv_sec = times[0].tv_sec;
68 tv[0].tv_usec = times[0].tv_nsec / 1000;
69 tv[1].tv_sec = times[1].tv_sec;
70 tv[1].tv_usec = times[1].tv_nsec / 1000;
71 tvp = tv;
72 if (times[0].tv_nsec == UTIME_OMIT ||
73 times[1].tv_nsec == UTIME_OMIT) {
74 if (fstat(fd, &sb) == -1)
75 return (-1);
76 if (times[0].tv_nsec == UTIME_OMIT) {
77 tv[0].tv_sec = sb.st_atim.tv_sec;
78 tv[0].tv_usec = sb.st_atim.tv_nsec / 1000;
79 }
80 if (times[1].tv_nsec == UTIME_OMIT) {
81 tv[1].tv_sec = sb.st_mtim.tv_sec;
82 tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000;
83 }
84 }
85 if (times[0].tv_nsec == UTIME_NOW ||
86 times[1].tv_nsec == UTIME_NOW) {
87 if (gettimeofday(&now, NULL) == -1)
88 return (-1);
89 if (times[0].tv_nsec == UTIME_NOW)
90 tv[0] = now;
91 if (times[1].tv_nsec == UTIME_NOW)
92 tv[1] = now;
93 }
94 }
95 return (futimes(fd, tvp));
96 }
97