diff --git a/include/sys/ioctl.h b/include/sys/ioctl.h
index 61eaf31f2d1..6483935ac45 100644
--- a/include/sys/ioctl.h
+++ b/include/sys/ioctl.h
@@ -68,6 +68,13 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
+/* The compatibility IOCTL definitions */
+
+#define _IO(type,nr)        _IOC((type),(nr))
+
+#define FS_IOC_GETFLAGS     FIOC_GETFLAGS
+#define FS_IOC_SETFLAGS     FIOC_SETFLAGS
+
 #undef EXTERN
 #if defined(__cplusplus)
 #define EXTERN extern "C"