components/uptime.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <inttypes.h>
   3 #include <stdio.h>
   4 #include <time.h>
   5
   6 #include "../util.h"
   7
   8 const char *
   9 uptime(void)
  10 {
  11         uintmax_t h, m;
  12         struct timespec uptime;
  13
  14         if (clock_gettime(CLOCK_BOOTTIME, &uptime) < 0) {
  15                 warn("clock_gettime 'CLOCK_BOOTTIME'");
  16                 return NULL;
  17         }
  18
  19         h = uptime.tv_sec / 3600;
  20         m = uptime.tv_sec % 3600 / 60;
  21
  22         return bprintf("%" PRIuMAX "h %" PRIuMAX "m", h, m);
  23 }