components/uptime.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <time.h>
   3 #include <stdio.h>
   4
   5 #include "../util.h"
   6
   7 const char *
   8 uptime(void)
   9 {
  10         int h, m;
  11         struct timespec uptime;
  12         if (clock_gettime(CLOCK_BOOTTIME, &uptime) < 0) {
  13                 warn("clock_gettime 'CLOCK_BOOTTIME'");
  14                 return NULL;
  15         }
  16         h = uptime.tv_sec / 3600;
  17         m = uptime.tv_sec % 3600 / 60;
  18         return bprintf("%dh %dm", h, m);
  19 }