1 files changed, 69 insertions, 0 deletions
diff --git a/busybox/util-linux/freeramdisk.c b/busybox/util-linux/freeramdisk.c
new file mode 100644
index 0000000..e5061dc
--- /dev/null
+++ b/busybox/util-linux/freeramdisk.c
@@ -0,0 +1,69 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * freeramdisk implementation for busybox
+ *
+ * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
+ * Adjusted a bit 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
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "busybox.h"
+
+
+/* From linux/fs.h */
+#define BLKFLSBUF  _IO(0x12,97)	/* flush buffer cache */
+
+extern int
+freeramdisk_main(int argc, char **argv)
+{
+	int result;
+	int fd;
+
+	if (argc != 2) {
+		bb_show_usage();
+	}
+
+	fd = bb_xopen(argv[1], O_RDWR);
+
+	result = ioctl(fd, BLKFLSBUF);
+#ifdef CONFIG_FEATURE_CLEAN_UP
+	close(fd);
+#endif
+	if (result < 0) {
+		bb_perror_msg_and_die("failed ioctl on %s", argv[1]);
+	}
+
+	/* Don't bother closing.  Exit does
+	 * that, so we can save a few bytes */
+	return EXIT_SUCCESS;
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
+