text: // +build !windows,!plan9
  
  // Copyright 2015 go-termios Author. All Rights Reserved.
  // https://github.com/go-termios/termios
  // Author: John Lenton <chipaca@github.com>
  
  package sys
  
  import (
  	"unsafe"
  
  	"golang.org/x/sys/unix"
  )
  
  // Termios represents terminal attributes.
  type Termios unix.Termios
  
  // NewTermiosFromFd extracts the terminal attribute of the given file
  // descriptor.
  func NewTermiosFromFd(fd int) (*Termios, error) {
  	var term Termios
  	if err := Ioctl(fd, getAttrIOCTL, uintptr(unsafe.Pointer(&term))); err != nil {
  		return nil, err
  	}
  	return &term, nil
  }
  
  // ApplyToFd applies term to the given file descriptor.
  func (term *Termios) ApplyToFd(fd int) error {
  	return Ioctl(fd, setAttrNowIOCTL, uintptr(unsafe.Pointer(term)))
  }
  
  // Copy returns a copy of term.
  func (term *Termios) Copy() *Termios {
  	v := *term
  	return &v
  }
  
  // SetVTime sets the timeout in deciseconds for noncanonical read.
  func (term *Termios) SetVTime(v uint8) {
  	term.Cc[unix.VTIME] = v
  }
  
  // SetVMin sets the minimal number of characters for noncanonical read.
  func (term *Termios) SetVMin(v uint8) {
  	term.Cc[unix.VMIN] = v
  }
  
  // SetICanon sets the canonical flag.
  func (term *Termios) SetICanon(v bool) {
  	setFlag(&term.Lflag, unix.ICANON, v)
  }
  
  // SetEcho sets the echo flag.
  func (term *Termios) SetEcho(v bool) {
  	setFlag(&term.Lflag, unix.ECHO, v)
  }
  
  // SetICRNL sets the CRNL iflag bit
  func (term *Termios) SetICRNL(v bool) {
  	setFlag(&term.Iflag, unix.ICRNL, v)
  }
  
  // FlushInput discards data written to a file descriptor but not read.
  func FlushInput(fd int) error {
  	return Ioctl(fd, flushIOCTL, uintptr(unix.TCIFLUSH))
  }
  