1 /*-
2 * Copyright (c) 2016 Maksym Sobolyev <sobomax@FreeBSD.org>
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/time.h>
29 #include <time.h>
30
31 #include "uc_check_time.h"
32
33 static const struct timeval max_diff_tv = {.tv_sec = 1, .tv_usec = 0};
34 static const struct timespec max_diff_ts = {.tv_sec = 1, .tv_nsec = 0};
35
36 int
uc_check_bintime(const struct bintime * mt)37 uc_check_bintime(const struct bintime *mt)
38 {
39 struct timespec bt;
40
41 bintime2timespec(mt, &bt);
42 return (uc_check_timespec_real(&bt));
43 }
44
45 int
uc_check_timeval(const struct timeval * bt)46 uc_check_timeval(const struct timeval *bt)
47 {
48 struct timeval ct, dt;
49
50 if (gettimeofday(&ct, NULL) < 0)
51 return (-1);
52 timersub(&ct, bt, &dt);
53 if (!timercmp(&dt, &max_diff_tv, <))
54 return (-1);
55
56 return (0);
57 }
58
59 int
uc_check_timespec_real(const struct timespec * bt)60 uc_check_timespec_real(const struct timespec *bt)
61 {
62 struct timespec ct;
63
64 if (clock_gettime(CLOCK_REALTIME, &ct) < 0)
65 return (-1);
66 timespecsub(&ct, bt, &ct);
67 if (!timespeccmp(&ct, &max_diff_ts, <))
68 return (-1);
69
70 return (0);
71 }
72
73 int
uc_check_timespec_mono(const struct timespec * bt)74 uc_check_timespec_mono(const struct timespec *bt)
75 {
76 struct timespec ct;
77
78 if (clock_gettime(CLOCK_MONOTONIC, &ct) < 0)
79 return (-1);
80 timespecsub(&ct, bt, &ct);
81 if (!timespeccmp(&ct, &max_diff_ts, <))
82 return (-1);
83
84 return (0);
85 }
86