diff --git a/src/add-ons/kernel/file_systems/bfs/bfs_control.h b/src/add-ons/kernel/file_systems/bfs/bfs_control.h
new file mode 100644
index 0000000000..b4a9da8574
--- /dev/null
+++ b/src/add-ons/kernel/file_systems/bfs/bfs_control.h
@@ -0,0 +1,72 @@
+#ifndef BFS_CONTROL_H
+#define BFS_CONTROL_H
+/* bfs_control - additional functionality exported via ioctl()
+**
+** Initial version by Axel Dörfler, axeld@pinc-software.de
+** This file may be used under the terms of the OpenBeOS License.
+*/
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "fsproto.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/* ioctl to check the version of BFS used - parameter is a uint32 *
+ * where the number is stored
+ */
+#define BFS_IOCTL_VERSION			14200
+
+/* ioctls to use the "chkbfs" feature from the outside
+ * all calls use a struct check_result as single parameter
+ */
+#define	BFS_IOCTL_START_CHECKING	14201
+#define BFS_IOCTL_STOP_CHECKING		14202
+#define BFS_IOCTL_CHECK_NEXT_NODE	14203
+
+/* all fields except "flags", and "name" must be set to zero before
+ * BFS_IOCTL_START_CHECKING is called
+ */
+struct check_control {
+	uint32		flags;
+	char		name[B_FILE_NAME_LENGTH];
+	vnode_id	inode;
+	uint32		mode;
+	uint32		errors;
+	struct {
+		uint64	missing;
+		uint64	already_set;
+		uint64	freed;
+	} stats;
+	status_t	status;
+	void		*cookie;
+};
+
+/* values for the flags field */
+#define BFS_FIX_BITMAP_ERRORS	1
+#define BFS_REMOVE_WRONG_TYPES	2
+	/* files that shouldn't be part of its parent will be removed
+	 * (i.e. a directory contains an attribute, ...)
+	 * Works only if B_FIX_BITMAP_ERRORS is set, too
+	 */
+#define BFS_REMOVE_INVALID		4
+	/* removes nodes that couldn't be opened at all from its parent
+	 * directory.
+	 * Also requires the B_FIX_BITMAP_ERRORS to be set.
+	 */
+
+/* values for the errors field */
+#define BFS_MISSING_BLOCKS		1
+#define BFS_BLOCKS_ALREADY_SET	2
+#define BFS_INVALID_BLOCK_RUN	4
+#define	BFS_COULD_NOT_OPEN		8
+#define BFS_WRONG_TYPE			16
+#define BFS_NAMES_DONT_MATCH	32
+
+#endif	/* BFS_CONTROL_H */