switched to go-mod, updated codegangsta/cli -> urfave/cli

vendor/github.com/kr/pty/pty_freebsd.go

@@ -1,73 +0,0 @@
-package pty
-
-import (
-	"errors"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-func posix_openpt(oflag int) (fd int, err error) {
-	r0, _, e1 := syscall.Syscall(syscall.SYS_POSIX_OPENPT, uintptr(oflag), 0, 0)
-	fd = int(r0)
-	if e1 != 0 {
-		err = e1
-	}
-	return
-}
-
-func open() (pty, tty *os.File, err error) {
-	fd, err := posix_openpt(syscall.O_RDWR | syscall.O_CLOEXEC)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	p := os.NewFile(uintptr(fd), "/dev/pts")
-	sname, err := ptsname(p)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	t, err := os.OpenFile("/dev/"+sname, os.O_RDWR, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-	return p, t, nil
-}
-
-func isptmaster(fd uintptr) (bool, error) {
-	err := ioctl(fd, syscall.TIOCPTMASTER, 0)
-	return err == nil, err
-}
-
-var (
-	emptyFiodgnameArg fiodgnameArg
-	ioctl_FIODGNAME   = _IOW('f', 120, unsafe.Sizeof(emptyFiodgnameArg))
-)
-
-func ptsname(f *os.File) (string, error) {
-	master, err := isptmaster(f.Fd())
-	if err != nil {
-		return "", err
-	}
-	if !master {
-		return "", syscall.EINVAL
-	}
-
-	const n = _C_SPECNAMELEN + 1
-	var (
-		buf = make([]byte, n)
-		arg = fiodgnameArg{Len: n, Buf: (*byte)(unsafe.Pointer(&buf[0]))}
-	)
-	err = ioctl(f.Fd(), ioctl_FIODGNAME, uintptr(unsafe.Pointer(&arg)))
-	if err != nil {
-		return "", err
-	}
-
-	for i, c := range buf {
-		if c == 0 {
-			return string(buf[:i]), nil
-		}
-	}
-	return "", errors.New("FIODGNAME string not NUL-terminated")
-}