usr.sbin/rtadvd/timer_subr.c

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