timer_subr.c revision 330897 
1/*	$FreeBSD: stable/11/usr.sbin/rtadvd/timer_subr.c 330897 2018-03-14 03:19:51Z eadler $	*/
2/*	$KAME: timer.c,v 1.9 2002/06/10 19:59:47 itojun Exp $	*/
3
4/*-
5 * SPDX-License-Identifier: BSD-3-Clause
6 *
7 * Copyright (C) 1998 WIDE Project.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/queue.h>
36#include <sys/socket.h>
37#include <syslog.h>
38#include <stdio.h>
39#include <inttypes.h>
40#include <time.h>
41
42#include "timer.h"
43#include "timer_subr.h"
44
45struct timespec *
46rtadvd_timer_rest(struct rtadvd_timer *rat)
47{
48	static struct timespec returnval, now;
49
50	clock_gettime(CLOCK_MONOTONIC_FAST, &now);
51	if (TS_CMP(&rat->rat_tm, &now, <=)) {
52		syslog(LOG_DEBUG,
53		    "<%s> a timer must be expired, but not yet",
54		    __func__);
55		returnval.tv_sec = returnval.tv_nsec = 0;
56	}
57	else
58		TS_SUB(&rat->rat_tm, &now, &returnval);
59
60	return (&returnval);
61}
62
63char *
64sec2str(uint32_t s, char *buf)
65{
66	uint32_t day;
67	uint32_t hour;
68	uint32_t min;
69	uint32_t sec;
70	char *p;
71
72	min = s / 60;
73	sec = s % 60;
74
75	hour = min / 60;
76	min = min % 60;
77
78	day = hour / 24;
79	hour = hour % 24;
80
81	p = buf;
82	if (day > 0)
83		p += sprintf(p, "%" PRIu32 "d", day);
84	if (hour > 0)
85		p += sprintf(p, "%" PRIu32 "h", hour);
86	if (min > 0)
87		p += sprintf(p, "%" PRIu32 "m", min);
88
89	if ((p == buf) || (sec > 0 && p > buf))
90		sprintf(p, "%" PRIu32 "s", sec);
91
92	return (buf);
93}
94