79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* Copyright (c) 1980, 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2020 Dylan Lom <djl@dylanlom.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define SECSPERMIN (time_t)60
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#define SECSPERHOUR (time_t)3600
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#define SECSPERDAY (time_t)86400
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int main(int argc, char *argv[]){
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char mode;
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int opt;
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if (argc < 2){
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mode='s';
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} else {
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while ((opt = getopt(argc, argv, "smHdh")) != -1) {
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switch(opt){
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case 's': mode='s'; break;
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case 'm': mode='m'; break;
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case 'H': mode='H'; break;
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case 'd': mode='d'; break;
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case 'h': printf("%s [-s|-m|-H|-d][-h]\n", argv[0]); exit(0); break;
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default: fprintf(stderr, "%s [-s|-m|-H|-d][-h]\n", argv[0]); exit(1); break;
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}
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}
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}
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struct timespec boottime;
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time_t uptime;
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int mins, hrs, days;
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if (clock_gettime(CLOCK_BOOTTIME, &boottime) != -1){
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uptime = boottime.tv_sec;
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if (uptime < 60)
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uptime += 60;
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mins = uptime / SECSPERMIN;
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hrs = uptime / SECSPERHOUR;
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days = uptime / SECSPERDAY;
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switch(mode) {
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case 's': printf("%d\n", (int)uptime); break;
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case 'm': printf("%d\n", (int)mins); break;
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case 'H': printf("%d\n", (int)hrs); break;
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case 'd': printf("%d\n", (int)days); break;
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}
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}
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}
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