_IOC_SIZESHIFT     28 arch/alpha/include/uapi/asm/ioctl.h #define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)
_IOC_SIZESHIFT     32 arch/sparc/include/uapi/asm/ioctl.h #define _IOC_SIZESHIFT   (_IOC_TYPESHIFT + _IOC_TYPEBITS)
_IOC_SIZESHIFT     46 include/uapi/asm-generic/ioctl.h #define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)