blob: a33fa9a596c4d3b982b5a5df7dfe6e5f5939b7ff [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 *
Erik Andersen61677fe2000-04-13 01:18:56 +00005 * Copyright (C) 1999,2000 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 Andersen3570a342000-09-25 21:45:58 +000024#include "busybox.h"
Eric Andersenabc0f4f1999-12-08 23:19:36 +000025#include <stdio.h>
Eric Andersen10dc9d42000-06-26 10:45:52 +000026#include <errno.h>
Eric Andersenabc0f4f1999-12-08 23:19:36 +000027
Eric Andersenabc0f4f1999-12-08 23:19:36 +000028extern int free_main(int argc, char **argv)
29{
Erik Andersend07ee462000-02-21 21:26:32 +000030 struct sysinfo info;
31 sysinfo(&info);
Eric Andersen73de6562000-09-10 16:10:41 +000032
33 /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
Eric Andersen10dc9d42000-06-26 10:45:52 +000034 if (info.mem_unit==0) {
Eric Andersen73de6562000-09-10 16:10:41 +000035 info.mem_unit=1;
Eric Andersen10dc9d42000-06-26 10:45:52 +000036 }
Eric Andersen73de6562000-09-10 16:10:41 +000037 info.mem_unit*=1024;
38
39 /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
40 info.totalram/=info.mem_unit;
41 info.freeram/=info.mem_unit;
42 info.totalswap/=info.mem_unit;
43 info.freeswap/=info.mem_unit;
44 info.sharedram/=info.mem_unit;
45 info.bufferram/=info.mem_unit;
46
Matt Kraai3bd8bd82000-07-14 23:28:47 +000047 if (argc > 1 && **(argv + 1) == '-')
48 usage(free_usage);
Erik Andersend07ee462000-02-21 21:26:32 +000049
50 printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
51 "shared", "buffers");
52
53 printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
54 info.totalram-info.freeram, info.freeram,
55 info.sharedram, info.bufferram);
56
57 printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
58 info.totalswap-info.freeswap, info.freeswap);
59
60 printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
61 (info.totalram-info.freeram)+(info.totalswap-info.freeswap),
62 info.freeram+info.freeswap);
Eric Andersenb6106152000-06-19 17:25:40 +000063 return(TRUE);
Eric Andersenabc0f4f1999-12-08 23:19:36 +000064}
Eric Andersen10dc9d42000-06-26 10:45:52 +000065
66