95 lines
1.8 KiB
Go
95 lines
1.8 KiB
Go
package main
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import (
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"io"
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"os"
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"github.com/codegangsta/cli"
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"github.com/docker/docker/pkg/term"
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"github.com/docker/libcontainer"
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)
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func newTty(context *cli.Context, p *libcontainer.Process, rootuid int) (*tty, error) {
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if context.Bool("tty") {
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console, err := p.NewConsole(rootuid)
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if err != nil {
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return nil, err
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}
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return &tty{
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console: console,
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closers: []io.Closer{
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console,
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},
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}, nil
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}
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return &tty{}, nil
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}
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type tty struct {
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console libcontainer.Console
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state *term.State
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closers []io.Closer
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}
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func (t *tty) Close() error {
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for _, c := range t.closers {
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c.Close()
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}
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if t.state != nil {
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term.RestoreTerminal(os.Stdin.Fd(), t.state)
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}
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return nil
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}
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func (t *tty) attach(process *libcontainer.Process) error {
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if t.console != nil {
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go io.Copy(t.console, os.Stdin)
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go io.Copy(os.Stdout, t.console)
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state, err := term.SetRawTerminal(os.Stdin.Fd())
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if err != nil {
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return err
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}
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t.state = state
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process.Stderr = nil
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process.Stdout = nil
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process.Stdin = nil
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} else {
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// setup standard pipes so that the TTY of the calling nsinit process
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// is not inherited by the container.
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r, w, err := os.Pipe()
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if err != nil {
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return err
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}
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go io.Copy(w, os.Stdin)
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t.closers = append(t.closers, w)
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process.Stdin = r
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if r, w, err = os.Pipe(); err != nil {
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return err
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}
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go io.Copy(os.Stdout, r)
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process.Stdout = w
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t.closers = append(t.closers, r)
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if r, w, err = os.Pipe(); err != nil {
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return err
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}
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go io.Copy(os.Stderr, r)
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process.Stderr = w
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t.closers = append(t.closers, r)
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}
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return nil
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}
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func (t *tty) setupPipe() {
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}
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func (t *tty) resize() error {
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if t.console == nil {
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return nil
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}
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ws, err := term.GetWinsize(os.Stdin.Fd())
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if err != nil {
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return err
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}
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return term.SetWinsize(t.console.Fd(), ws)
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}
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