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/* vi: set sw=4 ts=4: */
/*
* Mini free implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
/* getopt not needed */
#include "busybox.h"
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
int free_main(int argc, char **argv)
{
struct sysinfo info;
sysinfo(&info);
/* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
if (info.mem_unit==0) {
info.mem_unit=1;
}
if ( info.mem_unit == 1 ) {
info.mem_unit=1024;
/* TODO: Make all this stuff not overflow when mem >= 4 Gib */
info.totalram/=info.mem_unit;
info.freeram/=info.mem_unit;
#ifndef __uClinux__
info.totalswap/=info.mem_unit;
info.freeswap/=info.mem_unit;
#endif
info.sharedram/=info.mem_unit;
info.bufferram/=info.mem_unit;
} else {
info.mem_unit/=1024;
/* TODO: Make all this stuff not overflow when mem >= 4 Gib */
info.totalram*=info.mem_unit;
info.freeram*=info.mem_unit;
#ifndef __uClinux__
info.totalswap*=info.mem_unit;
info.freeswap*=info.mem_unit;
#endif
info.sharedram*=info.mem_unit;
info.bufferram*=info.mem_unit;
}
if (argc > 1 && **(argv + 1) == '-')
bb_show_usage();
printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
"shared", "buffers");
printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
info.totalram-info.freeram, info.freeram,
info.sharedram, info.bufferram);
#ifndef __uClinux__
printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
info.totalswap-info.freeswap, info.freeswap);
printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
(info.totalram-info.freeram)+(info.totalswap-info.freeswap),
info.freeram+info.freeswap);
#endif
return EXIT_SUCCESS;
}
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