1/* vi: set sw=4 ts=4: */
2/*
3 * Mini free 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/* getopt not needed */
25
26#include <stdio.h>
27#include <errno.h>
28#include <stdlib.h>
29#include "busybox.h"
30
31extern int free_main(int argc, char **argv)
32{
33	struct sysinfo info;
34	sysinfo(&info);
35
36	/* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
37	if (info.mem_unit==0) {
38		info.mem_unit=1;
39	}
40	info.mem_unit*=1024;
41
42	/* TODO:  Make all this stuff not overflow when mem >= 4 Gib */
43	info.totalram/=info.mem_unit;
44	info.freeram/=info.mem_unit;
45	info.totalswap/=info.mem_unit;
46	info.freeswap/=info.mem_unit;
47	info.sharedram/=info.mem_unit;
48	info.bufferram/=info.mem_unit;
49
50	if (argc > 1 && **(argv + 1) == '-')
51		show_usage();
52
53	printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
54			"shared", "buffers");
55
56	printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
57			info.totalram-info.freeram, info.freeram,
58			info.sharedram, info.bufferram);
59
60	printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
61			info.totalswap-info.freeswap, info.freeswap);
62
63	printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
64			(info.totalram-info.freeram)+(info.totalswap-info.freeswap),
65			info.freeram+info.freeswap);
66	return EXIT_SUCCESS;
67}
68
69
70