-//#define _IOC(a,b,c,d) ( ((a)<<29) | ((b)<<8) | (c) | ((d)<<16) )
-//
-#define _IOC_SIZEBITS 13
-#define _IOC_DIRBITS 3
-
-#define _IOC_NRBITS 8
-#define _IOC_TYPEBITS 8
-
-#define _IOC_NRSHIFT 0
-#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS)
-#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS)
-#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS)
-
-#define _IOC(dir,type,nr,size) \
- (((dir) << _IOC_DIRSHIFT) | \
- ((type) << _IOC_TYPESHIFT) | \
- ((nr) << _IOC_NRSHIFT) | \
- ((size) << _IOC_SIZESHIFT))
-
-
+#define _IOC(a,b,c,d) ( ((a)<<29) | ((b)<<8) | (c) | ((d)<<16) )