/*
* Mini free implementation for busybox
*
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
+ * Licensed under the GPL version 2, see the file LICENSE in this tarball.
*/
-#include "busybox.h"
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
+/* getopt not needed */
-extern int free_main(int argc, char **argv)
+#include "libbb.h"
+
+int free_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int free_main(int argc UNUSED_PARAM, char **argv IF_NOT_DESKTOP(UNUSED_PARAM))
{
struct sysinfo info;
+ unsigned mem_unit;
+
+#if ENABLE_DESKTOP
+ if (argv[1] && argv[1][0] == '-')
+ bb_show_usage();
+#endif
+
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;
+ mem_unit = 1;
+ if (info.mem_unit != 0) {
+ mem_unit = info.mem_unit;
}
- 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;
- info.totalswap/=info.mem_unit;
- info.freeswap/=info.mem_unit;
- info.sharedram/=info.mem_unit;
- info.bufferram/=info.mem_unit;
- if (argc > 1 && **(argv + 1) == '-')
- usage(free_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);
-
- printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
- info.totalswap-info.freeswap, info.freeswap);
+ /* Convert values to kbytes */
+ if (mem_unit == 1) {
+ info.totalram >>= 10;
+ info.freeram >>= 10;
+#if BB_MMU
+ info.totalswap >>= 10;
+ info.freeswap >>= 10;
+#endif
+ info.sharedram >>= 10;
+ info.bufferram >>= 10;
+ } else {
+ mem_unit >>= 10;
+ /* TODO: Make all this stuff not overflow when mem >= 4 Tb */
+ info.totalram *= mem_unit;
+ info.freeram *= mem_unit;
+#if BB_MMU
+ info.totalswap *= mem_unit;
+ info.freeswap *= mem_unit;
+#endif
+ info.sharedram *= mem_unit;
+ info.bufferram *= mem_unit;
+ }
- printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
- (info.totalram-info.freeram)+(info.totalswap-info.freeswap),
- info.freeram+info.freeswap);
+ printf(" %13s%13s%13s%13s%13s\n",
+ "total",
+ "used",
+ "free",
+ "shared", "buffers" /* swap and total don't have these columns */
+ );
+ printf("%6s%13lu%13lu%13lu%13lu%13lu\n", "Mem:",
+ info.totalram,
+ info.totalram - info.freeram,
+ info.freeram,
+ info.sharedram, info.bufferram
+ );
+#if BB_MMU
+ printf("%6s%13lu%13lu%13lu\n", "Swap:",
+ info.totalswap,
+ info.totalswap - info.freeswap,
+ info.freeswap
+ );
+ printf("%6s%13lu%13lu%13lu\n", "Total:",
+ info.totalram + info.totalswap,
+ (info.totalram - info.freeram) + (info.totalswap - info.freeswap),
+ info.freeram + info.freeswap
+ );
+#endif
return EXIT_SUCCESS;
}
-
-