github.com/christopherobin/docker@v1.6.2/pkg/term/termios_linux.go (about) 1 // +build !cgo 2 3 package term 4 5 import ( 6 "syscall" 7 "unsafe" 8 ) 9 10 const ( 11 getTermios = syscall.TCGETS 12 setTermios = syscall.TCSETS 13 ) 14 15 type Termios struct { 16 Iflag uint32 17 Oflag uint32 18 Cflag uint32 19 Lflag uint32 20 Cc [20]byte 21 Ispeed uint32 22 Ospeed uint32 23 } 24 25 // MakeRaw put the terminal connected to the given file descriptor into raw 26 // mode and returns the previous state of the terminal so that it can be 27 // restored. 28 func MakeRaw(fd uintptr) (*State, error) { 29 var oldState State 30 if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, getTermios, uintptr(unsafe.Pointer(&oldState.termios))); err != 0 { 31 return nil, err 32 } 33 34 newState := oldState.termios 35 36 newState.Iflag &^= (syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON) 37 newState.Oflag &^= syscall.OPOST 38 newState.Lflag &^= (syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN) 39 newState.Cflag &^= (syscall.CSIZE | syscall.PARENB) 40 newState.Cflag |= syscall.CS8 41 42 if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&newState))); err != 0 { 43 return nil, err 44 } 45 return &oldState, nil 46 }