// for those, IoctlRetInt should be used instead of this function.
func IoctlGetInt(fd int, req int) (int, error) {
	var value int
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return value, err
}

func IoctlGetWinsize(fd int, req int) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

// IoctlGetTermios performs an ioctl on fd with a *Termios.
//

}

func restore(fd int, state *State) error {
	return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios)
}

func getSize(fd int) (width, height int, err error) {
	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
	if err != nil {
		return 0, 0, err
	}
	return int(ws.Col), int(ws.Row), nil
}

// passwordReader is an io.Reader that reads from a specific file descriptor.
type passwordReader int

// for those, IoctlRetInt should be used instead of this function.
func IoctlGetInt(fd int, req int) (int, error) {
	var value int
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return value, err
}

func IoctlGetWinsize(fd int, req int) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func IoctlGetTermios(fd int, req int) (*Termios, error) {
	var value Termios

// for those, IoctlRetInt should be used instead of this function.
func IoctlGetInt(fd int, req uint) (int, error) {
	var value int
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return value, err
}

func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func IoctlGetTermios(fd int, req uint) (*Termios, error) {
	var value Termios