69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini free implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under the GPL version 2, see the file LICENSE in this tarball.
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*/
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/* getopt not needed */
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#include "libbb.h"
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int free_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int free_main(int argc, char **argv)
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{
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struct sysinfo info;
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sysinfo(&info);
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/* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
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if (info.mem_unit == 0) {
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info.mem_unit=1;
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}
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if (info.mem_unit == 1) {
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info.mem_unit=1024;
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/* TODO: Make all this stuff not overflow when mem >= 4 Gib */
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info.totalram/=info.mem_unit;
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info.freeram/=info.mem_unit;
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#ifndef __uClinux__
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info.totalswap/=info.mem_unit;
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info.freeswap/=info.mem_unit;
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#endif
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info.sharedram/=info.mem_unit;
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info.bufferram/=info.mem_unit;
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} else {
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info.mem_unit/=1024;
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/* TODO: Make all this stuff not overflow when mem >= 4 Gib */
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info.totalram*=info.mem_unit;
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info.freeram*=info.mem_unit;
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#ifndef __uClinux__
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info.totalswap*=info.mem_unit;
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info.freeswap*=info.mem_unit;
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#endif
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info.sharedram*=info.mem_unit;
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info.bufferram*=info.mem_unit;
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}
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if (argc > 1 && *argv[1] == '-')
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bb_show_usage();
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printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
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"shared", "buffers");
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printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
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info.totalram-info.freeram, info.freeram,
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info.sharedram, info.bufferram);
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#ifndef __uClinux__
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printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
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info.totalswap-info.freeswap, info.freeswap);
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printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
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(info.totalram-info.freeram)+(info.totalswap-info.freeswap),
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info.freeram+info.freeswap);
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#endif
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return EXIT_SUCCESS;
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}
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