uptime.c (702B) download
1/* See LICENSE file for copyright and license details. */
2#include <stdint.h>
3#include <stdio.h>
4#include <time.h>
5
6#include "../slstatus.h"
7#include "../util.h"
8
9#if defined(CLOCK_BOOTTIME)
10 #define UPTIME_FLAG CLOCK_BOOTTIME
11#elif defined(CLOCK_UPTIME)
12 #define UPTIME_FLAG CLOCK_UPTIME
13#else
14 #define UPTIME_FLAG CLOCK_MONOTONIC
15#endif
16
17const char *
18uptime(const char *unused)
19{
20 char warn_buf[256];
21 uintmax_t h, m;
22 struct timespec uptime;
23
24 if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
25 snprintf(warn_buf, sizeof(warn_buf), "clock_gettime %d", UPTIME_FLAG);
26 warn(warn_buf);
27 return NULL;
28 }
29
30 h = uptime.tv_sec / 3600;
31 m = uptime.tv_sec % 3600 / 60;
32
33 return bprintf("%juh %jum", h, m);
34}