| package console |
| |
| import ( |
| "fmt" |
| "os" |
| "unsafe" |
| |
| "golang.org/x/sys/unix" |
| ) |
| |
| const ( |
| cmdTcGet = unix.TCGETS |
| cmdTcSet = unix.TCSETS |
| ) |
| |
| 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.TIOCSPTLCK, uintptr(unsafe.Pointer(&u))) |
| } |
| |
| // ptsname retrieves the name of the first available pts for the given master. |
| func ptsname(f *os.File) (string, error) { |
| n, err := unix.IoctlGetInt(int(f.Fd()), unix.TIOCGPTN) |
| if err != nil { |
| return "", err |
| } |
| return fmt.Sprintf("/dev/pts/%d", n), nil |
| } |