[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini free implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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| 6 | *
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| 7 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 8 | */
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| 9 |
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| 10 | /* getopt not needed */
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| 11 |
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| 12 | #include "busybox.h"
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| 13 | #include <stdio.h>
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| 14 | #include <errno.h>
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| 15 | #include <stdlib.h>
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| 16 |
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| 17 | int free_main(int argc, char **argv)
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| 18 | {
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| 19 | struct sysinfo info;
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| 20 | sysinfo(&info);
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| 21 |
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| 22 | /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
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| 23 | if (info.mem_unit==0) {
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| 24 | info.mem_unit=1;
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| 25 | }
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| 26 | if ( info.mem_unit == 1 ) {
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| 27 | info.mem_unit=1024;
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| 28 |
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| 29 | /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
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| 30 | info.totalram/=info.mem_unit;
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| 31 | info.freeram/=info.mem_unit;
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| 32 | #ifndef __uClinux__
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| 33 | info.totalswap/=info.mem_unit;
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| 34 | info.freeswap/=info.mem_unit;
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| 35 | #endif
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| 36 | info.sharedram/=info.mem_unit;
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| 37 | info.bufferram/=info.mem_unit;
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| 38 | } else {
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| 39 | info.mem_unit/=1024;
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| 40 | /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
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| 41 | info.totalram*=info.mem_unit;
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| 42 | info.freeram*=info.mem_unit;
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| 43 | #ifndef __uClinux__
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| 44 | info.totalswap*=info.mem_unit;
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| 45 | info.freeswap*=info.mem_unit;
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| 46 | #endif
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| 47 | info.sharedram*=info.mem_unit;
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| 48 | info.bufferram*=info.mem_unit;
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| 49 | }
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| 50 |
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| 51 | if (argc > 1 && **(argv + 1) == '-')
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| 52 | bb_show_usage();
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| 53 |
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| 54 | printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
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| 55 | "shared", "buffers");
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| 56 |
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| 57 | printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
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| 58 | info.totalram-info.freeram, info.freeram,
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| 59 | info.sharedram, info.bufferram);
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| 60 |
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| 61 | #ifndef __uClinux__
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| 62 | printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
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| 63 | info.totalswap-info.freeswap, info.freeswap);
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| 64 |
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| 65 | printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
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| 66 | (info.totalram-info.freeram)+(info.totalswap-info.freeswap),
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| 67 | info.freeram+info.freeswap);
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| 68 | #endif
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| 69 | return EXIT_SUCCESS;
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| 70 | }
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| 71 |
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