1 files changed, 84 insertions, 0 deletions

diff --git a/busybox/procps/free.c b/busybox/procps/free.c
new file mode 100644
index 000000000..4fb047d48
--- /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;
+}
+