// RawControl invokes the user-defined function f for a non-IO
// operation.
func (fd *FD) RawControl(f func(uintptr)) error {
	return errors.New("not implemented")
}

// RawRead invokes the user-defined function f for a read operation.
func (fd *FD) RawRead(f func(uintptr) bool) error {
	return errors.New("not implemented")
}

// RawWrite invokes the user-defined function f for a write operation.