Interface version 4.3.0 (for reference by device number).
--- diff/include/linux/dm-ioctl.h	2004-09-30 15:34:09.000000000 +0100
+++ source/include/linux/dm-ioctl.h	2004-09-30 15:34:02.000000000 +0100
@@ -271,9 +271,9 @@
 #define DM_TARGET_MSG	 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
 
 #define DM_VERSION_MAJOR	4
-#define DM_VERSION_MINOR	2
+#define DM_VERSION_MINOR	3
 #define DM_VERSION_PATCHLEVEL	0
-#define DM_VERSION_EXTRA	"-ioctl (2004-06-08)"
+#define DM_VERSION_EXTRA	"-ioctl (2004-09-30)"
 
 /* Status bits */
 #define DM_READONLY_FLAG	(1 << 0) /* In/Out */