Remove unused vendor github.com/containerd/console

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

Closes: #425
Approved by: rhatdan

13 files changed, 0 insertions, 1122 deletions

diff --git a/vendor.conf b/vendor.conf
index 11fc6b4a1..e9bbc82c5 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -99,4 +99,3 @@ github.com/xeipuuv/gojsonschema  master
 github.com/xeipuuv/gojsonreference master
 github.com/xeipuuv/gojsonpointer master
 github.com/cyphar/filepath-securejoin v0.2.1
-github.com/containerd/console 84eeaae905fa414d03e07bcd6c8d3f19e7cf180e
diff --git a/vendor/github.com/containerd/console/LICENSE b/vendor/github.com/containerd/console/LICENSE
deleted file mode 100644
index 261eeb9e9..000000000
--- a/vendor/github.com/containerd/console/LICENSE
+++ /dev/null
@@ -1,201 +0,0 @@
-                                 Apache License
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-                        http://www.apache.org/licenses/
-
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diff --git a/vendor/github.com/containerd/console/README.md b/vendor/github.com/containerd/console/README.md
deleted file mode 100644
index 4c56d9d13..000000000
--- a/vendor/github.com/containerd/console/README.md
+++ /dev/null
@@ -1,17 +0,0 @@
-# console
-
-[![Build Status](https://travis-ci.org/containerd/console.svg?branch=master)](https://travis-ci.org/containerd/console)
-
-Golang package for dealing with consoles.  Light on deps and a simple API.
-
-## Modifying the current process
-
-```go
-current := console.Current()
-defer current.Reset()
-
-if err := current.SetRaw(); err != nil {
-}
-ws, err := current.Size()
-current.Resize(ws)
-```
diff --git a/vendor/github.com/containerd/console/console.go b/vendor/github.com/containerd/console/console.go
deleted file mode 100644
index bf2798fda..000000000
--- a/vendor/github.com/containerd/console/console.go
+++ /dev/null
@@ -1,62 +0,0 @@
-package console
-
-import (
-	"errors"
-	"io"
-	"os"
-)
-
-var ErrNotAConsole = errors.New("provided file is not a console")
-
-type Console interface {
-	io.Reader
-	io.Writer
-	io.Closer
-
-	// Resize resizes the console to the provided window size
-	Resize(WinSize) error
-	// ResizeFrom resizes the calling console to the size of the
-	// provided console
-	ResizeFrom(Console) error
-	// SetRaw sets the console in raw mode
-	SetRaw() error
-	// DisableEcho disables echo on the console
-	DisableEcho() error
-	// Reset restores the console to its orignal state
-	Reset() error
-	// Size returns the window size of the console
-	Size() (WinSize, error)
-	// Fd returns the console's file descriptor
-	Fd() uintptr
-	// Name returns the console's file name
-	Name() string
-}
-
-// WinSize specifies the window size of the console
-type WinSize struct {
-	// Height of the console
-	Height uint16
-	// Width of the console
-	Width uint16
-	x     uint16
-	y     uint16
-}
-
-// Current returns the current processes console
-func Current() Console {
-	c, err := ConsoleFromFile(os.Stdin)
-	if err != nil {
-		// stdin should always be a console for the design
-		// of this function
-		panic(err)
-	}
-	return c
-}
-
-// ConsoleFromFile returns a console using the provided file
-func ConsoleFromFile(f *os.File) (Console, error) {
-	if err := checkConsole(f); err != nil {
-		return nil, err
-	}
-	return newMaster(f)
-}
diff --git a/vendor/github.com/containerd/console/console_linux.go b/vendor/github.com/containerd/console/console_linux.go
deleted file mode 100644
index c96372929..000000000
--- a/vendor/github.com/containerd/console/console_linux.go
+++ /dev/null
@@ -1,255 +0,0 @@
-// +build linux
-
-package console
-
-import (
-	"io"
-	"os"
-	"sync"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	maxEvents = 128
-)
-
-// Epoller manages multiple epoll consoles using edge-triggered epoll api so we
-// dont have to deal with repeated wake-up of EPOLLER or EPOLLHUP.
-// For more details, see:
-// - https://github.com/systemd/systemd/pull/4262
-// - https://github.com/moby/moby/issues/27202
-//
-// Example usage of Epoller and EpollConsole can be as follow:
-//
-//	epoller, _ := NewEpoller()
-//	epollConsole, _ := epoller.Add(console)
-//	go epoller.Wait()
-//	var (
-//		b  bytes.Buffer
-//		wg sync.WaitGroup
-//	)
-//	wg.Add(1)
-//	go func() {
-//		io.Copy(&b, epollConsole)
-//		wg.Done()
-//	}()
-//	// perform I/O on the console
-//	epollConsole.Shutdown(epoller.CloseConsole)
-//	wg.Wait()
-//	epollConsole.Close()
-type Epoller struct {
-	efd       int
-	mu        sync.Mutex
-	fdMapping map[int]*EpollConsole
-}
-
-// NewEpoller returns an instance of epoller with a valid epoll fd.
-func NewEpoller() (*Epoller, error) {
-	efd, err := unix.EpollCreate1(unix.EPOLL_CLOEXEC)
-	if err != nil {
-		return nil, err
-	}
-	return &Epoller{
-		efd:       efd,
-		fdMapping: make(map[int]*EpollConsole),
-	}, nil
-}
-
-// Add creates a epoll console based on the provided console. The console will
-// be registered with EPOLLET (i.e. using edge-triggered notification) and its
-// file descriptor will be set to non-blocking mode. After this, user should use
-// the return console to perform I/O.
-func (e *Epoller) Add(console Console) (*EpollConsole, error) {
-	sysfd := int(console.Fd())
-	// Set sysfd to non-blocking mode
-	if err := unix.SetNonblock(sysfd, true); err != nil {
-		return nil, err
-	}
-
-	ev := unix.EpollEvent{
-		Events: unix.EPOLLIN | unix.EPOLLOUT | unix.EPOLLRDHUP | unix.EPOLLET,
-		Fd:     int32(sysfd),
-	}
-	if err := unix.EpollCtl(e.efd, unix.EPOLL_CTL_ADD, sysfd, &ev); err != nil {
-		return nil, err
-	}
-	ef := &EpollConsole{
-		Console: console,
-		sysfd:   sysfd,
-		readc:   sync.NewCond(&sync.Mutex{}),
-		writec:  sync.NewCond(&sync.Mutex{}),
-	}
-	e.mu.Lock()
-	e.fdMapping[sysfd] = ef
-	e.mu.Unlock()
-	return ef, nil
-}
-
-// Wait starts the loop to wait for its consoles' notifications and signal
-// appropriate console that it can perform I/O.
-func (e *Epoller) Wait() error {
-	events := make([]unix.EpollEvent, maxEvents)
-	for {
-		n, err := unix.EpollWait(e.efd, events, -1)
-		if err != nil {
-			// EINTR: The call was interrupted by a signal handler before either
-			// any of the requested events occurred or the timeout expired
-			if err == unix.EINTR {
-				continue
-			}
-			return err
-		}
-		for i := 0; i < n; i++ {
-			ev := &events[i]
-			// the console is ready to be read from
-			if ev.Events&(unix.EPOLLIN|unix.EPOLLHUP|unix.EPOLLERR) != 0 {
-				if epfile := e.getConsole(int(ev.Fd)); epfile != nil {
-					epfile.signalRead()
-				}
-			}
-			// the console is ready to be written to
-			if ev.Events&(unix.EPOLLOUT|unix.EPOLLHUP|unix.EPOLLERR) != 0 {
-				if epfile := e.getConsole(int(ev.Fd)); epfile != nil {
-					epfile.signalWrite()
-				}
-			}
-		}
-	}
-}
-
-// Close unregister the console's file descriptor from epoll interface
-func (e *Epoller) CloseConsole(fd int) error {
-	e.mu.Lock()
-	defer e.mu.Unlock()
-	delete(e.fdMapping, fd)
-	return unix.EpollCtl(e.efd, unix.EPOLL_CTL_DEL, fd, &unix.EpollEvent{})
-}
-
-func (e *Epoller) getConsole(sysfd int) *EpollConsole {
-	e.mu.Lock()
-	f := e.fdMapping[sysfd]
-	e.mu.Unlock()
-	return f
-}
-
-// Close the epoll fd
-func (e *Epoller) Close() error {
-	return unix.Close(e.efd)
-}
-
-// EpollConsole acts like a console but register its file descriptor with a
-// epoll fd and uses epoll API to perform I/O.
-type EpollConsole struct {
-	Console
-	readc  *sync.Cond
-	writec *sync.Cond
-	sysfd  int
-	closed bool
-}
-
-// Read reads up to len(p) bytes into p. It returns the number of bytes read
-// (0 <= n <= len(p)) and any error encountered.
-//
-// If the console's read returns EAGAIN or EIO, we assumes that its a
-// temporary error because the other side went away and wait for the signal
-// generated by epoll event to continue.
-func (ec *EpollConsole) Read(p []byte) (n int, err error) {
-	var read int
-	ec.readc.L.Lock()
-	defer ec.readc.L.Unlock()
-	for {
-		read, err = ec.Console.Read(p[n:])
-		n += read
-		if err != nil {
-			var hangup bool
-			if perr, ok := err.(*os.PathError); ok {
-				hangup = (perr.Err == unix.EAGAIN || perr.Err == unix.EIO)
-			} else {
-				hangup = (err == unix.EAGAIN || err == unix.EIO)
-			}
-			// if the other end disappear, assume this is temporary and wait for the
-			// signal to continue again. Unless we didnt read anything and the
-			// console is already marked as closed then we should exit
-			if hangup && !(n == 0 && len(p) > 0 && ec.closed) {
-				ec.readc.Wait()
-				continue
-			}
-		}
-		break
-	}
-	// if we didnt read anything then return io.EOF to end gracefully
-	if n == 0 && len(p) > 0 && err == nil {
-		err = io.EOF
-	}
-	// signal for others that we finished the read
-	ec.readc.Signal()
-	return n, err
-}
-
-// Writes len(p) bytes from p to the console. It returns the number of bytes
-// written from p (0 <= n <= len(p)) and any error encountered that caused
-// the write to stop early.
-//
-// If writes to the console returns EAGAIN or EIO, we assumes that its a
-// temporary error because the other side went away and wait for the signal
-// generated by epoll event to continue.
-func (ec *EpollConsole) Write(p []byte) (n int, err error) {
-	var written int
-	ec.writec.L.Lock()
-	defer ec.writec.L.Unlock()
-	for {
-		written, err = ec.Console.Write(p[n:])
-		n += written
-		if err != nil {
-			var hangup bool
-			if perr, ok := err.(*os.PathError); ok {
-				hangup = (perr.Err == unix.EAGAIN || perr.Err == unix.EIO)
-			} else {
-				hangup = (err == unix.EAGAIN || err == unix.EIO)
-			}
-			// if the other end disappear, assume this is temporary and wait for the
-			// signal to continue again.
-			if hangup {
-				ec.writec.Wait()
-				continue
-			}
-		}
-		// unrecoverable error, break the loop and return the error
-		break
-	}
-	if n < len(p) && err == nil {
-		err = io.ErrShortWrite
-	}
-	// signal for others that we finished the write
-	ec.writec.Signal()
-	return n, err
-}
-
-// Close closed the file descriptor and signal call waiters for this fd.
-// It accepts a callback which will be called with the console's fd. The
-// callback typically will be used to do further cleanup such as unregister the
-// console's fd from the epoll interface.
-// User should call Shutdown and wait for all I/O operation to be finished
-// before closing the console.
-func (ec *EpollConsole) Shutdown(close func(int) error) error {
-	ec.readc.L.Lock()
-	defer ec.readc.L.Unlock()
-	ec.writec.L.Lock()
-	defer ec.writec.L.Unlock()
-
-	ec.readc.Broadcast()
-	ec.writec.Broadcast()
-	ec.closed = true
-	return close(ec.sysfd)
-}
-
-// signalRead signals that the console is readable.
-func (ec *EpollConsole) signalRead() {
-	ec.readc.Signal()
-}
-
-// signalWrite signals that the console is writable.
-func (ec *EpollConsole) signalWrite() {
-	ec.writec.Signal()
-}
diff --git a/vendor/github.com/containerd/console/console_unix.go b/vendor/github.com/containerd/console/console_unix.go
deleted file mode 100644
index 118c8c3ab..000000000
--- a/vendor/github.com/containerd/console/console_unix.go
+++ /dev/null
@@ -1,142 +0,0 @@
-// +build darwin freebsd linux solaris
-
-package console
-
-import (
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-// NewPty creates a new pty pair
-// The master is returned as the first console and a string
-// with the path to the pty slave is returned as the second
-func NewPty() (Console, string, error) {
-	f, err := os.OpenFile("/dev/ptmx", unix.O_RDWR|unix.O_NOCTTY|unix.O_CLOEXEC, 0)
-	if err != nil {
-		return nil, "", err
-	}
-	slave, err := ptsname(f)
-	if err != nil {
-		return nil, "", err
-	}
-	if err := unlockpt(f); err != nil {
-		return nil, "", err
-	}
-	m, err := newMaster(f)
-	if err != nil {
-		return nil, "", err
-	}
-	return m, slave, nil
-}
-
-type master struct {
-	f        *os.File
-	original *unix.Termios
-}
-
-func (m *master) Read(b []byte) (int, error) {
-	return m.f.Read(b)
-}
-
-func (m *master) Write(b []byte) (int, error) {
-	return m.f.Write(b)
-}
-
-func (m *master) Close() error {
-	return m.f.Close()
-}
-
-func (m *master) Resize(ws WinSize) error {
-	return tcswinsz(m.f.Fd(), ws)
-}
-
-func (m *master) ResizeFrom(c Console) error {
-	ws, err := c.Size()
-	if err != nil {
-		return err
-	}
-	return m.Resize(ws)
-}
-
-func (m *master) Reset() error {
-	if m.original == nil {
-		return nil
-	}
-	return tcset(m.f.Fd(), m.original)
-}
-
-func (m *master) getCurrent() (unix.Termios, error) {
-	var termios unix.Termios
-	if err := tcget(m.f.Fd(), &termios); err != nil {
-		return unix.Termios{}, err
-	}
-	return termios, nil
-}
-
-func (m *master) SetRaw() error {
-	rawState, err := m.getCurrent()
-	if err != nil {
-		return err
-	}
-	rawState = cfmakeraw(rawState)
-	rawState.Oflag = rawState.Oflag | unix.OPOST
-	return tcset(m.f.Fd(), &rawState)
-}
-
-func (m *master) DisableEcho() error {
-	rawState, err := m.getCurrent()
-	if err != nil {
-		return err
-	}
-	rawState.Lflag = rawState.Lflag &^ unix.ECHO
-	return tcset(m.f.Fd(), &rawState)
-}
-
-func (m *master) Size() (WinSize, error) {
-	return tcgwinsz(m.f.Fd())
-}
-
-func (m *master) Fd() uintptr {
-	return m.f.Fd()
-}
-
-func (m *master) Name() string {
-	return m.f.Name()
-}
-
-// checkConsole checks if the provided file is a console
-func checkConsole(f *os.File) error {
-	var termios unix.Termios
-	if tcget(f.Fd(), &termios) != nil {
-		return ErrNotAConsole
-	}
-	return nil
-}
-
-func newMaster(f *os.File) (Console, error) {
-	m := &master{
-		f: f,
-	}
-	t, err := m.getCurrent()
-	if err != nil {
-		return nil, err
-	}
-	m.original = &t
-	return m, nil
-}
-
-// ClearONLCR sets the necessary tty_ioctl(4)s to ensure that a pty pair
-// created by us acts normally. In particular, a not-very-well-known default of
-// Linux unix98 ptys is that they have +onlcr by default. While this isn't a
-// problem for terminal emulators, because we relay data from the terminal we
-// also relay that funky line discipline.
-func ClearONLCR(fd uintptr) error {
-	return setONLCR(fd, false)
-}
-
-// SetONLCR sets the necessary tty_ioctl(4)s to ensure that a pty pair
-// created by us acts as intended for a terminal emulator.
-func SetONLCR(fd uintptr) error {
-	return setONLCR(fd, true)
-}
diff --git a/vendor/github.com/containerd/console/console_windows.go b/vendor/github.com/containerd/console/console_windows.go
deleted file mode 100644
index d78a0b841..000000000
--- a/vendor/github.com/containerd/console/console_windows.go
+++ /dev/null
@@ -1,200 +0,0 @@
-package console
-
-import (
-	"fmt"
-	"os"
-
-	"github.com/pkg/errors"
-	"golang.org/x/sys/windows"
-)
-
-var (
-	vtInputSupported  bool
-	ErrNotImplemented = errors.New("not implemented")
-)
-
-func (m *master) initStdios() {
-	m.in = windows.Handle(os.Stdin.Fd())
-	if err := windows.GetConsoleMode(m.in, &m.inMode); err == nil {
-		// Validate that windows.ENABLE_VIRTUAL_TERMINAL_INPUT is supported, but do not set it.
-		if err = windows.SetConsoleMode(m.in, m.inMode|windows.ENABLE_VIRTUAL_TERMINAL_INPUT); err == nil {
-			vtInputSupported = true
-		}
-		// Unconditionally set the console mode back even on failure because SetConsoleMode
-		// remembers invalid bits on input handles.
-		windows.SetConsoleMode(m.in, m.inMode)
-	} else {
-		fmt.Printf("failed to get console mode for stdin: %v\n", err)
-	}
-
-	m.out = windows.Handle(os.Stdout.Fd())
-	if err := windows.GetConsoleMode(m.out, &m.outMode); err == nil {
-		if err := windows.SetConsoleMode(m.out, m.outMode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING); err == nil {
-			m.outMode |= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
-		} else {
-			windows.SetConsoleMode(m.out, m.outMode)
-		}
-	} else {
-		fmt.Printf("failed to get console mode for stdout: %v\n", err)
-	}
-
-	m.err = windows.Handle(os.Stderr.Fd())
-	if err := windows.GetConsoleMode(m.err, &m.errMode); err == nil {
-		if err := windows.SetConsoleMode(m.err, m.errMode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING); err == nil {
-			m.errMode |= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
-		} else {
-			windows.SetConsoleMode(m.err, m.errMode)
-		}
-	} else {
-		fmt.Printf("failed to get console mode for stderr: %v\n", err)
-	}
-}
-
-type master struct {
-	in     windows.Handle
-	inMode uint32
-
-	out     windows.Handle
-	outMode uint32
-
-	err     windows.Handle
-	errMode uint32
-}
-
-func (m *master) SetRaw() error {
-	if err := makeInputRaw(m.in, m.inMode); err != nil {
-		return err
-	}
-
-	// Set StdOut and StdErr to raw mode, we ignore failures since
-	// windows.DISABLE_NEWLINE_AUTO_RETURN might not be supported on this version of
-	// Windows.
-
-	windows.SetConsoleMode(m.out, m.outMode|windows.DISABLE_NEWLINE_AUTO_RETURN)
-
-	windows.SetConsoleMode(m.err, m.errMode|windows.DISABLE_NEWLINE_AUTO_RETURN)
-
-	return nil
-}
-
-func (m *master) Reset() error {
-	for _, s := range []struct {
-		fd   windows.Handle
-		mode uint32
-	}{
-		{m.in, m.inMode},
-		{m.out, m.outMode},
-		{m.err, m.errMode},
-	} {
-		if err := windows.SetConsoleMode(s.fd, s.mode); err != nil {
-			return errors.Wrap(err, "unable to restore console mode")
-		}
-	}
-
-	return nil
-}
-
-func (m *master) Size() (WinSize, error) {
-	var info windows.ConsoleScreenBufferInfo
-	err := windows.GetConsoleScreenBufferInfo(m.out, &info)
-	if err != nil {
-		return WinSize{}, errors.Wrap(err, "unable to get console info")
-	}
-
-	winsize := WinSize{
-		Width:  uint16(info.Window.Right - info.Window.Left + 1),
-		Height: uint16(info.Window.Bottom - info.Window.Top + 1),
-	}
-
-	return winsize, nil
-}
-
-func (m *master) Resize(ws WinSize) error {
-	return ErrNotImplemented
-}
-
-func (m *master) ResizeFrom(c Console) error {
-	return ErrNotImplemented
-}
-
-func (m *master) DisableEcho() error {
-	mode := m.inMode &^ windows.ENABLE_ECHO_INPUT
-	mode |= windows.ENABLE_PROCESSED_INPUT
-	mode |= windows.ENABLE_LINE_INPUT
-
-	if err := windows.SetConsoleMode(m.in, mode); err != nil {
-		return errors.Wrap(err, "unable to set console to disable echo")
-	}
-
-	return nil
-}
-
-func (m *master) Close() error {
-	return nil
-}
-
-func (m *master) Read(b []byte) (int, error) {
-	panic("not implemented on windows")
-}
-
-func (m *master) Write(b []byte) (int, error) {
-	panic("not implemented on windows")
-}
-
-func (m *master) Fd() uintptr {
-	return uintptr(m.in)
-}
-
-// on windows, console can only be made from os.Std{in,out,err}, hence there
-// isnt a single name here we can use. Return a dummy "console" value in this
-// case should be sufficient.
-func (m *master) Name() string {
-	return "console"
-}
-
-// makeInputRaw puts the terminal (Windows Console) connected to the given
-// file descriptor into raw mode
-func makeInputRaw(fd windows.Handle, mode uint32) error {
-	// See
-	// -- https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx
-	// -- https://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx
-
-	// Disable these modes
-	mode &^= windows.ENABLE_ECHO_INPUT
-	mode &^= windows.ENABLE_LINE_INPUT
-	mode &^= windows.ENABLE_MOUSE_INPUT
-	mode &^= windows.ENABLE_WINDOW_INPUT
-	mode &^= windows.ENABLE_PROCESSED_INPUT
-
-	// Enable these modes
-	mode |= windows.ENABLE_EXTENDED_FLAGS
-	mode |= windows.ENABLE_INSERT_MODE
-	mode |= windows.ENABLE_QUICK_EDIT_MODE
-
-	if vtInputSupported {
-		mode |= windows.ENABLE_VIRTUAL_TERMINAL_INPUT
-	}
-
-	if err := windows.SetConsoleMode(fd, mode); err != nil {
-		return errors.Wrap(err, "unable to set console to raw mode")
-	}
-
-	return nil
-}
-
-func checkConsole(f *os.File) error {
-	var mode uint32
-	if err := windows.GetConsoleMode(windows.Handle(f.Fd()), &mode); err != nil {
-		return err
-	}
-	return nil
-}
-
-func newMaster(f *os.File) (Console, error) {
-	if f != os.Stdin && f != os.Stdout && f != os.Stderr {
-		return nil, errors.New("creating a console from a file is not supported on windows")
-	}
-	m := &master{}
-	m.initStdios()
-	return m, nil
-}
diff --git a/vendor/github.com/containerd/console/tc_darwin.go b/vendor/github.com/containerd/console/tc_darwin.go
deleted file mode 100644
index b102bad74..000000000
--- a/vendor/github.com/containerd/console/tc_darwin.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package console
-
-import (
-	"fmt"
-	"os"
-	"unsafe"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	cmdTcGet = unix.TIOCGETA
-	cmdTcSet = unix.TIOCSETA
-)
-
-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) {
-	n, err := unix.IoctlGetInt(int(f.Fd()), unix.TIOCPTYGNAME)
-	if err != nil {
-		return "", err
-	}
-	return fmt.Sprintf("/dev/pts/%d", n), nil
-}
diff --git a/vendor/github.com/containerd/console/tc_freebsd.go b/vendor/github.com/containerd/console/tc_freebsd.go
deleted file mode 100644
index e2a10e441..000000000
--- a/vendor/github.com/containerd/console/tc_freebsd.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package console
-
-import (
-	"fmt"
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	cmdTcGet = unix.TIOCGETA
-	cmdTcSet = unix.TIOCSETA
-)
-
-// 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.
-// This does not exist on FreeBSD, it does not allocate controlling terminals on open
-func unlockpt(f *os.File) error {
-	return nil
-}
-
-// 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
-}
diff --git a/vendor/github.com/containerd/console/tc_linux.go b/vendor/github.com/containerd/console/tc_linux.go
deleted file mode 100644
index 80ef2f6fb..000000000
--- a/vendor/github.com/containerd/console/tc_linux.go
+++ /dev/null
@@ -1,37 +0,0 @@
-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
-}
diff --git a/vendor/github.com/containerd/console/tc_solaris_cgo.go b/vendor/github.com/containerd/console/tc_solaris_cgo.go
deleted file mode 100644
index f8066d8e3..000000000
--- a/vendor/github.com/containerd/console/tc_solaris_cgo.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// +build solaris,cgo
-
-package console
-
-import (
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-//#include <stdlib.h>
-import "C"
-
-const (
-	cmdTcGet = unix.TCGETS
-	cmdTcSet = unix.TCSETS
-)
-
-// ptsname retrieves the name of the first available pts for the given master.
-func ptsname(f *os.File) (string, error) {
-	ptspath, err := C.ptsname(C.int(f.Fd()))
-	if err != nil {
-		return "", err
-	}
-	return C.GoString(ptspath), 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 {
-	if _, err := C.grantpt(C.int(f.Fd())); err != nil {
-		return err
-	}
-	return nil
-}
diff --git a/vendor/github.com/containerd/console/tc_solaris_nocgo.go b/vendor/github.com/containerd/console/tc_solaris_nocgo.go
deleted file mode 100644
index 0aefa0d2b..000000000
--- a/vendor/github.com/containerd/console/tc_solaris_nocgo.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// +build solaris,!cgo
-
-//
-// Implementing the functions below requires cgo support.  Non-cgo stubs
-// versions are defined below to enable cross-compilation of source code
-// that depends on these functions, but the resultant cross-compiled
-// binaries cannot actually be used.  If the stub function(s) below are
-// actually invoked they will display an error message and cause the
-// calling process to exit.
-//
-
-package console
-
-import (
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	cmdTcGet = unix.TCGETS
-	cmdTcSet = unix.TCSETS
-)
-
-func ptsname(f *os.File) (string, error) {
-	panic("ptsname() support requires cgo.")
-}
-
-func unlockpt(f *os.File) error {
-	panic("unlockpt() support requires cgo.")
-}
diff --git a/vendor/github.com/containerd/console/tc_unix.go b/vendor/github.com/containerd/console/tc_unix.go
deleted file mode 100644
index df7dcb933..000000000
--- a/vendor/github.com/containerd/console/tc_unix.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// +build darwin freebsd linux solaris
-
-package console
-
-import (
-	"golang.org/x/sys/unix"
-)
-
-func tcget(fd uintptr, p *unix.Termios) error {
-	termios, err := unix.IoctlGetTermios(int(fd), cmdTcGet)
-	if err != nil {
-		return err
-	}
-	*p = *termios
-	return nil
-}
-
-func tcset(fd uintptr, p *unix.Termios) error {
-	return unix.IoctlSetTermios(int(fd), cmdTcSet, p)
-}
-
-func tcgwinsz(fd uintptr) (WinSize, error) {
-	var ws WinSize
-
-	uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
-	if err != nil {
-		return ws, err
-	}
-
-	// Translate from unix.Winsize to console.WinSize
-	ws.Height = uws.Row
-	ws.Width = uws.Col
-	ws.x = uws.Xpixel
-	ws.y = uws.Ypixel
-	return ws, nil
-}
-
-func tcswinsz(fd uintptr, ws WinSize) error {
-	// Translate from console.WinSize to unix.Winsize
-
-	var uws unix.Winsize
-	uws.Row = ws.Height
-	uws.Col = ws.Width
-	uws.Xpixel = ws.x
-	uws.Ypixel = ws.y
-
-	return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, &uws)
-}
-
-func setONLCR(fd uintptr, enable bool) error {
-	var termios unix.Termios
-	if err := tcget(fd, &termios); err != nil {
-		return err
-	}
-	if enable {
-		// Set +onlcr so we can act like a real terminal
-		termios.Oflag |= unix.ONLCR
-	} else {
-		// Set -onlcr so we don't have to deal with \r.
-		termios.Oflag &^= unix.ONLCR
-	}
-	return tcset(fd, &termios)
-}
-
-func cfmakeraw(t unix.Termios) unix.Termios {
-	t.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
-	t.Oflag &^= unix.OPOST
-	t.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
-	t.Cflag &^= (unix.CSIZE | unix.PARENB)
-	t.Cflag &^= unix.CS8
-	t.Cc[unix.VMIN] = 1
-	t.Cc[unix.VTIME] = 0
-
-	return t
-}