usr.sbin/rtadvd/timer_subr.c

   1 /*      $FreeBSD: stable/10/usr.sbin/rtadvd/timer_subr.c 253970 2013-08-05 20:13:02Z hrs $      */
   2 /*      $KAME: timer.c,v 1.9 2002/06/10 19:59:47 itojun Exp $   */
   3
   4 /*
   5  * Copyright (C) 1998 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <sys/queue.h>
  34 #include <sys/socket.h>
  35 #include <syslog.h>
  36 #include <stdio.h>
  37 #include <inttypes.h>
  38 #include <time.h>
  39
  40 #include "timer.h"
  41 #include "timer_subr.h"
  42
  43 struct timespec *
  44 rtadvd_timer_rest(struct rtadvd_timer *rat)
  45 {
  46         static struct timespec returnval, now;
  47
  48         clock_gettime(CLOCK_MONOTONIC_FAST, &now);
  49         if (TS_CMP(&rat->rat_tm, &now, <=)) {
  50                 syslog(LOG_DEBUG,
  51                     "<%s> a timer must be expired, but not yet",
  52                     __func__);
  53                 returnval.tv_sec = returnval.tv_nsec = 0;
  54         }
  55         else
  56                 TS_SUB(&rat->rat_tm, &now, &returnval);
  57
  58         return (&returnval);
  59 }
  60
  61 char *
  62 sec2str(uint32_t s, char *buf)
  63 {
  64         uint32_t day;
  65         uint32_t hour;
  66         uint32_t min;
  67         uint32_t sec;
  68         char *p;
  69
  70         min = s / 60;
  71         sec = s % 60;
  72
  73         hour = min / 60;
  74         min = min % 60;
  75
  76         day = hour / 24;
  77         hour = hour % 24;
  78
  79         p = buf;
  80         if (day > 0)
  81                 p += sprintf(p, "%" PRIu32 "d", day);
  82         if (hour > 0)
  83                 p += sprintf(p, "%" PRIu32 "h", hour);
  84         if (min > 0)
  85                 p += sprintf(p, "%" PRIu32 "m", min);
  86
  87         if ((p == buf) || (sec > 0 && p > buf))
  88                 sprintf(p, "%" PRIu32 "s", sec);
  89
  90         return (buf);
  91 }