Vendor integration dependencies.

integration/vendor/github.com/opencontainers/runc/tty.go

@@ -0,0 +1,90 @@
+// +build linux
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/docker/docker/pkg/term"
+	"github.com/opencontainers/runc/libcontainer"
+)
+
+// newTty creates a new tty for use with the container.  If a tty is not to be
+// created for the process, pipes are created so that the TTY of the parent
+// process are not inherited by the container.
+func newTty(create bool, p *libcontainer.Process, rootuid int) (*tty, error) {
+	if create {
+		return createTty(p, rootuid)
+	}
+	return createStdioPipes(p, rootuid)
+}
+
+// setup standard pipes so that the TTY of the calling runc process
+// is not inherited by the container.
+func createStdioPipes(p *libcontainer.Process, rootuid int) (*tty, error) {
+	i, err := p.InitializeIO(rootuid)
+	if err != nil {
+		return nil, err
+	}
+	t := &tty{
+		closers: []io.Closer{
+			i.Stdin,
+			i.Stdout,
+			i.Stderr,
+		},
+	}
+	go io.Copy(i.Stdin, os.Stdin)
+	go io.Copy(os.Stdout, i.Stdout)
+	go io.Copy(os.Stderr, i.Stderr)
+	return t, nil
+}
+
+func createTty(p *libcontainer.Process, rootuid int) (*tty, error) {
+	console, err := p.NewConsole(rootuid)
+	if err != nil {
+		return nil, err
+	}
+	go io.Copy(console, os.Stdin)
+	go io.Copy(os.Stdout, console)
+	state, err := term.SetRawTerminal(os.Stdin.Fd())
+	if err != nil {
+		return nil, fmt.Errorf("failed to set the terminal from the stdin: %v", err)
+	}
+	t := &tty{
+		console: console,
+		state:   state,
+		closers: []io.Closer{
+			console,
+		},
+	}
+	return t, nil
+}
+
+type tty struct {
+	console libcontainer.Console
+	state   *term.State
+	closers []io.Closer
+}
+
+func (t *tty) Close() error {
+	for _, c := range t.closers {
+		c.Close()
+	}
+	if t.state != nil {
+		term.RestoreTerminal(os.Stdin.Fd(), t.state)
+	}
+	return nil
+}
+
+func (t *tty) resize() error {
+	if t.console == nil {
+		return nil
+	}
+	ws, err := term.GetWinsize(os.Stdin.Fd())
+	if err != nil {
+		return err
+	}
+	return term.SetWinsize(t.console.Fd(), ws)
+}