1/* vi: set sw=4 ts=4: */
2/*
3 * Mini uptime implementation for busybox
4 *
5 * Copyright (C) 1999,2000,2001 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/* This version of uptime doesn't display the number of users on the system,
25 * since busybox init doesn't mess with utmp.  For folks using utmp that are
26 * just dying to have # of users reported, feel free to write it as some type
27 * of BB_FEATURE_UTMP_SUPPORT #define
28 */
29
30/* getopt not needed */
31
32
33#include <stdio.h>
34#include <time.h>
35#include <errno.h>
36#include <stdlib.h>
37#include "busybox.h"
38
39static const int FSHIFT = 16;              /* nr of bits of precision */
40#define FIXED_1         (1<<FSHIFT)     /* 1.0 as fixed-point */
41#define LOAD_INT(x) ((x) >> FSHIFT)
42#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
43
44
45extern int uptime_main(int argc, char **argv)
46{
47	int updays, uphours, upminutes;
48	struct sysinfo info;
49	struct tm *current_time;
50	time_t current_secs;
51
52	time(&current_secs);
53	current_time = localtime(&current_secs);
54
55	sysinfo(&info);
56
57	printf(" %2d:%02d%s  up ",
58			current_time->tm_hour%12 ? current_time->tm_hour%12 : 12,
59			current_time->tm_min, current_time->tm_hour > 11 ? "pm" : "am");
60	updays = (int) info.uptime / (60*60*24);
61	if (updays)
62		printf("%d day%s, ", updays, (updays != 1) ? "s" : "");
63	upminutes = (int) info.uptime / 60;
64	uphours = (upminutes / 60) % 24;
65	upminutes %= 60;
66	if(uphours)
67		printf("%2d:%02d, ", uphours, upminutes);
68	else
69		printf("%d min, ", upminutes);
70
71	printf("load average: %ld.%02ld, %ld.%02ld, %ld.%02ld\n",
72			LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
73			LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
74			LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));
75
76	return EXIT_SUCCESS;
77}
78