source: MondoRescue/branches/2.2.2/mindi-busybox/procps/uptime.c@ 1247

/* vi: set sw=4 ts=4: */
/*
 * Mini uptime implementation for busybox
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 */

/* This version of uptime doesn't display the number of users on the system,
 * since busybox init doesn't mess with utmp.  For folks using utmp that are
 * just dying to have # of users reported, feel free to write it as some type
 * of CONFIG_FEATURE_UTMP_SUPPORT #define
 */

/* getopt not needed */

#include "busybox.h"
#include <stdio.h>
#include <time.h>
#include <errno.h>
#include <stdlib.h>

#ifndef FSHIFT
# define FSHIFT 16              /* nr of bits of precision */
#endif
#define FIXED_1         (1<<FSHIFT)     /* 1.0 as fixed-point */
#define LOAD_INT(x) ((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)


int uptime_main(int argc, char **argv)
{
    int updays, uphours, upminutes;
    struct sysinfo info;
    struct tm *current_time;
    time_t current_secs;

    time(&current_secs);
    current_time = localtime(&current_secs);

    sysinfo(&info);

    printf(" %02d:%02d:%02d up ",
            current_time->tm_hour, current_time->tm_min, current_time->tm_sec);
    updays = (int) info.uptime / (60*60*24);
    if (updays)
        printf("%d day%s, ", updays, (updays != 1) ? "s" : "");
    upminutes = (int) info.uptime / 60;
    uphours = (upminutes / 60) % 24;
    upminutes %= 60;
    if(uphours)
        printf("%2d:%02d, ", uphours, upminutes);
    else
        printf("%d min, ", upminutes);

    printf("load average: %ld.%02ld, %ld.%02ld, %ld.%02ld\n",
            LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
            LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
            LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));

    return EXIT_SUCCESS;
}