blob: 41e872d12c689c8dafd8763e6ca6be5172bd426b [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenabc0f4f1999-12-08 23:19:36 +00002/*
3 * Mini free implementation for busybox
4 *
Eric Andersen8ec10a92001-01-27 09:33:39 +00005 * Copyright (C) 1999,2000,2001 by Lineo, inc.
Eric Andersenabc0f4f1999-12-08 23:19:36 +00006 * 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
Eric Andersenabc0f4f1999-12-08 23:19:36 +000024#include <stdio.h>
Eric Andersen10dc9d42000-06-26 10:45:52 +000025#include <errno.h>
Eric Andersened3ef502001-01-27 08:24:39 +000026#include <stdlib.h>
Eric Andersencbe31da2001-02-20 06:14:08 +000027#include "busybox.h"
Eric Andersenabc0f4f1999-12-08 23:19:36 +000028
Eric Andersenabc0f4f1999-12-08 23:19:36 +000029extern int free_main(int argc, char **argv)
30{
Erik Andersend07ee462000-02-21 21:26:32 +000031 struct sysinfo info;
32 sysinfo(&info);
Eric Andersen73de6562000-09-10 16:10:41 +000033
34 /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
Eric Andersen10dc9d42000-06-26 10:45:52 +000035 if (info.mem_unit==0) {
Eric Andersen73de6562000-09-10 16:10:41 +000036 info.mem_unit=1;
Eric Andersen10dc9d42000-06-26 10:45:52 +000037 }
Eric Andersen73de6562000-09-10 16:10:41 +000038 info.mem_unit*=1024;
39
40 /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
41 info.totalram/=info.mem_unit;
42 info.freeram/=info.mem_unit;
43 info.totalswap/=info.mem_unit;
44 info.freeswap/=info.mem_unit;
45 info.sharedram/=info.mem_unit;
46 info.bufferram/=info.mem_unit;
47
Matt Kraai3bd8bd82000-07-14 23:28:47 +000048 if (argc > 1 && **(argv + 1) == '-')
Eric Andersen67991cf2001-02-14 21:23:06 +000049 show_usage();
Erik Andersend07ee462000-02-21 21:26:32 +000050
51 printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
52 "shared", "buffers");
53
54 printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
55 info.totalram-info.freeram, info.freeram,
56 info.sharedram, info.bufferram);
57
58 printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
59 info.totalswap-info.freeswap, info.freeswap);
60
61 printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
62 (info.totalram-info.freeram)+(info.totalswap-info.freeswap),
63 info.freeram+info.freeswap);
Matt Kraai3e856ce2000-12-01 02:55:13 +000064 return EXIT_SUCCESS;
Eric Andersenabc0f4f1999-12-08 23:19:36 +000065}
Eric Andersen10dc9d42000-06-26 10:45:52 +000066
67