Beispiel #1
0
func (d *driver) Run(c *execdriver.Command, pipes *execdriver.Pipes, startCallback execdriver.StartCallback) (int, error) {
	// take the Command and populate the libcontainer.Config from it
	container, err := d.createContainer(c)
	if err != nil {
		return -1, err
	}
	d.Lock()
	d.activeContainers[c.ID] = &activeContainer{
		container: container,
		cmd:       &c.Cmd,
	}
	d.Unlock()

	var (
		dataPath = filepath.Join(d.root, c.ID)
		args     = append([]string{c.Entrypoint}, c.Arguments...)
	)
	if err := d.createContainerRoot(c.ID); err != nil {
		return -1, err
	}
	defer d.removeContainerRoot(c.ID)

	if err := d.writeContainerFile(container, c.ID); err != nil {
		return -1, err
	}

	term := getTerminal(c, pipes)

	return namespaces.Exec(container, term, c.Rootfs, dataPath, args, func(container *libcontainer.Config, console, rootfs, dataPath, init string, child *os.File, args []string) *exec.Cmd {
		// we need to join the rootfs because namespaces will setup the rootfs and chroot
		initPath := filepath.Join(c.Rootfs, c.InitPath)

		c.Path = d.initPath
		c.Args = append([]string{
			initPath,
			"-driver", DriverName,
			"-console", console,
			"-pipe", "3",
			"-root", filepath.Join(d.root, c.ID),
			"--",
		}, args...)

		// set this to nil so that when we set the clone flags anything else is reset
		c.SysProcAttr = nil
		system.SetCloneFlags(&c.Cmd, uintptr(namespaces.GetNamespaceFlags(container.Namespaces)))
		c.ExtraFiles = []*os.File{child}

		c.Env = container.Env
		c.Dir = c.Rootfs

		return &c.Cmd
	}, func() {
		if startCallback != nil {
			c.ContainerPid = c.Process.Pid
			startCallback(c)
		}
	})
}
Beispiel #2
0
func (d *driver) Run(c *execdriver.Command, pipes *execdriver.Pipes, startCallback execdriver.StartCallback) (int, error) {
	// take the Command and populate the libcontainer.Config from it
	container, err := d.createContainer(c)
	if err != nil {
		return -1, err
	}

	var term execdriver.Terminal

	if c.ProcessConfig.Tty {
		term, err = NewTtyConsole(&c.ProcessConfig, pipes)
	} else {
		term, err = execdriver.NewStdConsole(&c.ProcessConfig, pipes)
	}
	if err != nil {
		return -1, err
	}
	c.ProcessConfig.Terminal = term

	d.Lock()
	d.activeContainers[c.ID] = &activeContainer{
		container: container,
		cmd:       &c.ProcessConfig.Cmd,
	}
	d.Unlock()

	var (
		dataPath = filepath.Join(d.root, c.ID)
		args     = append([]string{c.ProcessConfig.Entrypoint}, c.ProcessConfig.Arguments...)
	)

	if err := d.createContainerRoot(c.ID); err != nil {
		return -1, err
	}
	defer d.removeContainerRoot(c.ID)

	if err := d.writeContainerFile(container, c.ID); err != nil {
		return -1, err
	}

	return namespaces.Exec(container, c.ProcessConfig.Stdin, c.ProcessConfig.Stdout, c.ProcessConfig.Stderr, c.ProcessConfig.Console, c.Rootfs, dataPath, args, func(container *libcontainer.Config, console, rootfs, dataPath, init string, child *os.File, args []string) *exec.Cmd {
		c.ProcessConfig.Path = d.initPath
		c.ProcessConfig.Args = append([]string{
			DriverName,
			"-console", console,
			"-pipe", "3",
			"-root", filepath.Join(d.root, c.ID),
			"--",
		}, args...)

		// set this to nil so that when we set the clone flags anything else is reset
		c.ProcessConfig.SysProcAttr = &syscall.SysProcAttr{
			Cloneflags: uintptr(namespaces.GetNamespaceFlags(container.Namespaces)),
		}
		c.ProcessConfig.ExtraFiles = []*os.File{child}

		c.ProcessConfig.Env = container.Env
		c.ProcessConfig.Dir = c.Rootfs

		return &c.ProcessConfig.Cmd
	}, func() {
		if startCallback != nil {
			c.ContainerPid = c.ProcessConfig.Process.Pid
			startCallback(&c.ProcessConfig, c.ContainerPid)
		}
	})
}
Beispiel #3
0
func (d *driver) Run(c *execdriver.Command, pipes *execdriver.Pipes, startCallback execdriver.StartCallback) (execdriver.ExitStatus, error) {
	// take the Command and populate the libcontainer.Config from it
	container, err := d.createContainer(c)
	if err != nil {
		return execdriver.ExitStatus{ExitCode: -1}, err
	}

	var term execdriver.Terminal

	if c.ProcessConfig.Tty {
		term, err = NewTtyConsole(&c.ProcessConfig, pipes)
	} else {
		term, err = execdriver.NewStdConsole(&c.ProcessConfig, pipes)
	}
	if err != nil {
		return execdriver.ExitStatus{ExitCode: -1}, err
	}
	c.ProcessConfig.Terminal = term

	d.Lock()
	d.activeContainers[c.ID] = &activeContainer{
		container: container,
		cmd:       &c.ProcessConfig.Cmd,
	}
	d.Unlock()

	var (
		dataPath = filepath.Join(d.root, c.ID)
		args     = append([]string{c.ProcessConfig.Entrypoint}, c.ProcessConfig.Arguments...)
	)

	if err := d.createContainerRoot(c.ID); err != nil {
		return execdriver.ExitStatus{ExitCode: -1}, err
	}
	defer d.cleanContainer(c.ID)

	if err := d.writeContainerFile(container, c.ID); err != nil {
		return execdriver.ExitStatus{ExitCode: -1}, err
	}

	execOutputChan := make(chan execOutput, 1)
	waitForStart := make(chan struct{})

	go func() {
		exitCode, err := namespaces.Exec(container, c.ProcessConfig.Stdin, c.ProcessConfig.Stdout, c.ProcessConfig.Stderr, c.ProcessConfig.Console, dataPath, args, func(container *libcontainer.Config, console, dataPath, init string, child *os.File, args []string) *exec.Cmd {
			c.ProcessConfig.Path = d.initPath
			c.ProcessConfig.Args = append([]string{
				DriverName,
				"-console", console,
				"-pipe", "3",
				"-root", filepath.Join(d.root, c.ID),
				"--",
			}, args...)

			// set this to nil so that when we set the clone flags anything else is reset
			c.ProcessConfig.SysProcAttr = &syscall.SysProcAttr{
				Cloneflags: uintptr(namespaces.GetNamespaceFlags(container.Namespaces)),
			}
			c.ProcessConfig.ExtraFiles = []*os.File{child}

			c.ProcessConfig.Env = container.Env
			c.ProcessConfig.Dir = container.RootFs

			return &c.ProcessConfig.Cmd
		}, func() {
			close(waitForStart)
			if startCallback != nil {
				c.ContainerPid = c.ProcessConfig.Process.Pid
				startCallback(&c.ProcessConfig, c.ContainerPid)
			}
		})
		execOutputChan <- execOutput{exitCode, err}
	}()

	select {
	case execOutput := <-execOutputChan:
		return execdriver.ExitStatus{ExitCode: execOutput.exitCode}, execOutput.err
	case <-waitForStart:
		break
	}

	oomKill := false
	state, err := libcontainer.GetState(filepath.Join(d.root, c.ID))
	if err == nil {
		oomKillNotification, err := libcontainer.NotifyOnOOM(state)
		if err == nil {
			_, oomKill = <-oomKillNotification
		} else {
			log.Warnf("WARNING: Your kernel does not support OOM notifications: %s", err)
		}
	} else {
		log.Warnf("Failed to get container state, oom notify will not work: %s", err)
	}
	// wait for the container to exit.
	execOutput := <-execOutputChan

	return execdriver.ExitStatus{ExitCode: execOutput.exitCode, OOMKilled: oomKill}, execOutput.err
}