1/* vi: set sw=4 ts=4: */
2/*
3 * Mini uptime implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under the GPL version 2, see the file LICENSE in this tarball.
8 */
9
10/* This version of uptime doesn't display the number of users on the system,
11 * since busybox init doesn't mess with utmp.  For folks using utmp that are
12 * just dying to have # of users reported, feel free to write it as some type
13 * of CONFIG_FEATURE_UTMP_SUPPORT #define
14 */
15
16/* getopt not needed */
17
18#include "libbb.h"
19
20#ifndef FSHIFT
21# define FSHIFT 16              /* nr of bits of precision */
22#endif
23#define FIXED_1         (1<<FSHIFT)     /* 1.0 as fixed-point */
24#define LOAD_INT(x) ((x) >> FSHIFT)
25#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
26
27
28int uptime_main(int argc, char **argv);
29int uptime_main(int argc, char **argv)
30{
31	int updays, uphours, upminutes;
32	struct sysinfo info;
33	struct tm *current_time;
34	time_t current_secs;
35
36	time(&current_secs);
37	current_time = localtime(&current_secs);
38
39	sysinfo(&info);
40
41	printf(" %02d:%02d:%02d up ",
42			current_time->tm_hour, current_time->tm_min, current_time->tm_sec);
43	updays = (int) info.uptime / (60*60*24);
44	if (updays)
45		printf("%d day%s, ", updays, (updays != 1) ? "s" : "");
46	upminutes = (int) info.uptime / 60;
47	uphours = (upminutes / 60) % 24;
48	upminutes %= 60;
49	if (uphours)
50		printf("%2d:%02d, ", uphours, upminutes);
51	else
52		printf("%d min, ", upminutes);
53
54	printf("load average: %ld.%02ld, %ld.%02ld, %ld.%02ld\n",
55			LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
56			LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
57			LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));
58
59	return EXIT_SUCCESS;
60}
61