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) == -1) fprintf(stderr, "sysctl 'KERN_BOOTTIME': %s\n", strerror(errno)); return NULL; } uptime = now - boottime.tv_sec; return format(uptime); } #endif