diff options
Diffstat (limited to 'busybox/procps/free.c')
| -rw-r--r-- | busybox/procps/free.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/busybox/procps/free.c b/busybox/procps/free.c new file mode 100644 index 0000000..4fb047d --- /dev/null +++ b/busybox/procps/free.c @@ -0,0 +1,84 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini free implementation for busybox + * + * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +/* getopt not needed */ + +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include "busybox.h" + +extern 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; +} + |