64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package console
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func tcget(fd uintptr, p *unix.Termios) error {
|
|
return ioctl(fd, unix.TIOCGETA, uintptr(unsafe.Pointer(p)))
|
|
}
|
|
|
|
func tcset(fd uintptr, p *unix.Termios) error {
|
|
return ioctl(fd, unix.TIOCSETA, uintptr(unsafe.Pointer(p)))
|
|
}
|
|
|
|
func ioctl(fd, flag, data uintptr) error {
|
|
if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, flag, data); err != 0 {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
|
|
// unlockpt should be called before opening the slave side of a pty.
|
|
func unlockpt(f *os.File) error {
|
|
var u int32
|
|
return ioctl(f.Fd(), unix.TIOCPTYUNLK, uintptr(unsafe.Pointer(&u)))
|
|
}
|
|
|
|
// ptsname retrieves the name of the first available pts for the given master.
|
|
func ptsname(f *os.File) (string, error) {
|
|
var n int32
|
|
if err := ioctl(f.Fd(), unix.TIOCPTYGNAME, uintptr(unsafe.Pointer(&n))); err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("/dev/pts/%d", n), nil
|
|
}
|
|
|
|
func saneTerminal(f *os.File) error {
|
|
// Go doesn't have a wrapper for any of the termios ioctls.
|
|
var termios unix.Termios
|
|
if err := tcget(f.Fd(), &termios); err != nil {
|
|
return err
|
|
}
|
|
// Set -onlcr so we don't have to deal with \r.
|
|
termios.Oflag &^= unix.ONLCR
|
|
return tcset(f.Fd(), &termios)
|
|
}
|
|
|
|
func cfmakeraw(t unix.Termios) unix.Termios {
|
|
t.Iflag = uint64(uint32(t.Iflag) & ^uint32((unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)))
|
|
t.Oflag = uint64(uint32(t.Oflag) & ^uint32(unix.OPOST))
|
|
t.Lflag = uint64(uint32(t.Lflag) & ^(uint32(unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)))
|
|
t.Cflag = uint64(uint32(t.Cflag) & ^(uint32(unix.CSIZE | unix.PARENB)))
|
|
t.Cflag = t.Cflag | unix.CS8
|
|
t.Cc[unix.VMIN] = 1
|
|
t.Cc[unix.VTIME] = 0
|
|
|
|
return t
|
|
}
|