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