Method control

pty/pty_other.go:62–89

(tty *os.File, fn func(fd uintptr) error)

}

func (p *otherPty) control(tty *os.File, fn func(fd uintptr) error) (err error) {
	defer func() {
		// Always echo the close error for closed ptys.
		p.mutex.Lock()
		defer p.mutex.Unlock()
		if p.closed {
			err = p.err
		}
	}()

	rawConn, err := tty.SyscallConn()
	if err != nil {
		return err
	}

	var ctlErr error
	err = rawConn.Control(func(fd uintptr) {
		ctlErr = fn(fd)
	})
	switch {
	case err != nil:
		return err
	case ctlErr != nil:
		return ctlErr
	default:
		return nil
	}
}

func (p *otherPty) Name() string {
	return p.name