components/uptime.c
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include "../util.h"
const char *
format(int uptime)
{
int h, m;
h = uptime / 3600;
m = (uptime - h * 3600) / 60;
return bprintf("%dh %dm", h, m);
}
#if defined(__linux__)
#include <sys/sysinfo.h>
const char *
uptime(void)
{
int uptime;
struct sysinfo info;
sysinfo(&info);
uptime = info.uptime;
return format(uptime);
}
#elif defined(__OpenBSD__)
#include <errno.h>
#include <string.h>
#include <sys/sysctl.h>
#include <sys/time.h>
const char *
uptime(void)
{
int mib[2], uptime;
size_t size;
time_t now;
struct timeval boottime;
time(&now);
mib[0] = CTL_KERN;
mib[1] = KERN_BOOTTIME;
size = sizeof(boottime);
if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0) {
fprintf(stderr, "sysctl 'KERN_BOOTTIME': %s\n", strerror(errno));
return NULL;
}
uptime = now - boottime.tv_sec;
return format(uptime);
}
#endif