1 files changed, 68 insertions, 0 deletions
diff --git a/procps/free.c b/procps/free.c
new file mode 100644
index 0000000..e76dd21
--- /dev/null
+++ b/procps/free.c
@@ -0,0 +1,68 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini free implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under the GPL version 2, see the file LICENSE in this tarball.
+ */
+
+/* getopt not needed */
+
+#include "libbb.h"
+
+int free_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+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;
+}