Golang ProcessConfig.Env方法代码示例

func TestCustomLxcConfigMisc(t *testing.T) {
	root, err := ioutil.TempDir("", "TestCustomLxcConfig")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(root)
	os.MkdirAll(path.Join(root, "containers", "1"), 0777)
	driver, err := NewDriver(root, "", false)
	if err != nil {
		t.Fatal(err)
	}
	processConfig := execdriver.ProcessConfig{
		Privileged: false,
	}

	processConfig.Env = []string{"HOSTNAME=testhost"}
	command := &execdriver.Command{
		ID: "1",
		LxcConfig: []string{
			"lxc.cgroup.cpuset.cpus = 0,1",
		},
		Network: &execdriver.Network{
			Mtu: 1500,
			Interface: &execdriver.NetworkInterface{
				Gateway:     "10.10.10.1",
				IPAddress:   "10.10.10.10",
				IPPrefixLen: 24,
				Bridge:      "docker0",
			},
		},
		ProcessConfig: processConfig,
		CapAdd:        []string{"net_admin", "syslog"},
		CapDrop:       []string{"kill", "mknod"},
	}

	p, err := driver.generateLXCConfig(command)
	if err != nil {
		t.Fatal(err)
	}
	// network
	grepFile(t, p, "lxc.network.type = veth")
	grepFile(t, p, "lxc.network.link = docker0")
	grepFile(t, p, "lxc.network.name = eth0")
	grepFile(t, p, "lxc.network.ipv4 = 10.10.10.10/24")
	grepFile(t, p, "lxc.network.ipv4.gateway = 10.10.10.1")
	grepFile(t, p, "lxc.network.flags = up")

	// hostname
	grepFile(t, p, "lxc.utsname = testhost")
	grepFile(t, p, "lxc.cgroup.cpuset.cpus = 0,1")
	container := nativeTemplate.New()
	for _, cap := range container.Capabilities {
		cap = strings.ToLower(cap)
		if cap != "mknod" && cap != "kill" {
			grepFile(t, p, fmt.Sprintf("lxc.cap.keep = %s", cap))
		}
	}
	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = kill"), true)
	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = mknod"), true)
}

func populateCommand(c *Container, env []string) error {
	en := &execdriver.Network{
		Mtu:       c.daemon.config.Mtu,
		Interface: nil,
	}

	parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
	switch parts[0] {

	case "none":
	case "default", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			network := c.NetworkSettings
			en.Interface = &execdriver.NetworkInterface{
				MacAddress: network.MacAddress,
			}
		}
	default:
		return fmt.Errorf("invalid network mode: %s", c.hostConfig.NetworkMode)
	}

	pid := &execdriver.Pid{}

	// TODO Windows. This can probably be factored out.
	pid.HostPid = c.hostConfig.PidMode.IsHost()

	// TODO Windows. Resource controls to be implemented later.
	resources := &execdriver.Resources{}

	// TODO Windows. Further refactoring required (privileged/user)
	processConfig := execdriver.ProcessConfig{
		Privileged: c.hostConfig.Privileged,
		Entrypoint: c.Path,
		Arguments:  c.Args,
		Tty:        c.Config.Tty,
		User:       c.Config.User,
	}

	processConfig.Env = env

	// TODO Windows: Factor out remainder of unused fields.
	c.command = &execdriver.Command{
		ID:             c.ID,
		Rootfs:         c.RootfsPath(),
		ReadonlyRootfs: c.hostConfig.ReadonlyRootfs,
		InitPath:       "/.dockerinit",
		WorkingDir:     c.Config.WorkingDir,
		Network:        en,
		Pid:            pid,
		Resources:      resources,
		CapAdd:         c.hostConfig.CapAdd.Slice(),
		CapDrop:        c.hostConfig.CapDrop.Slice(),
		ProcessConfig:  processConfig,
		ProcessLabel:   c.GetProcessLabel(),
		MountLabel:     c.GetMountLabel(),
	}

	return nil
}

func TestCustomLxcConfigMisc(t *testing.T) {
	root, err := ioutil.TempDir("", "TestCustomLxcConfig")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(root)
	os.MkdirAll(path.Join(root, "containers", "1"), 0777)
	driver, err := NewDriver(root, root, "", true)

	if err != nil {
		t.Fatal(err)
	}
	processConfig := execdriver.ProcessConfig{
		Privileged: false,
	}

	processConfig.Env = []string{"HOSTNAME=testhost"}
	command := &execdriver.Command{
		CommonCommand: execdriver.CommonCommand{
			ID: "1",
			Network: &execdriver.Network{
				Mtu: 1500,
			},
			ProcessConfig: processConfig,
		},
		LxcConfig: []string{
			"lxc.cgroup.cpuset.cpus = 0,1",
		},
		CapAdd:          []string{"net_admin", "syslog"},
		CapDrop:         []string{"kill", "mknod"},
		AppArmorProfile: "lxc-container-default-with-nesting",
	}

	p, err := driver.generateLXCConfig(command)
	if err != nil {
		t.Fatal(err)
	}
	grepFile(t, p, "lxc.aa_profile = lxc-container-default-with-nesting")
	// hostname
	grepFile(t, p, "lxc.utsname = testhost")
	grepFile(t, p, "lxc.cgroup.cpuset.cpus = 0,1")
	container := nativeTemplate.New()
	for _, cap := range container.Capabilities {
		realCap := execdriver.GetCapability(cap)
		numCap := fmt.Sprintf("%d", realCap.Value)
		if cap != "MKNOD" && cap != "KILL" {
			grepFile(t, p, fmt.Sprintf("lxc.cap.keep = %s", numCap))
		}
	}

	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = %d", capability.CAP_KILL), true)
	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = %d", capability.CAP_MKNOD), true)
}

func TestCustomLxcConfigMiscOverride(t *testing.T) {
	root, err := ioutil.TempDir("", "TestCustomLxcConfig")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(root)
	os.MkdirAll(path.Join(root, "containers", "1"), 0777)
	driver, err := NewDriver(root, root, "", false)
	if err != nil {
		t.Fatal(err)
	}
	processConfig := execdriver.ProcessConfig{
		Privileged: false,
	}

	processConfig.Env = []string{"HOSTNAME=testhost"}
	command := &execdriver.Command{
		ID: "1",
		LxcConfig: []string{
			"lxc.cgroup.cpuset.cpus = 0,1",
			"lxc.network.ipv4 = 172.0.0.1",
		},
		Network: &execdriver.Network{
			Mtu:       1500,
			Interface: nil,
		},
		ProcessConfig: processConfig,
		CapAdd:        []string{"NET_ADMIN", "SYSLOG"},
		CapDrop:       []string{"KILL", "MKNOD"},
	}

	p, err := driver.generateLXCConfig(command)
	if err != nil {
		t.Fatal(err)
	}

	// hostname
	grepFile(t, p, "lxc.utsname = testhost")
	grepFile(t, p, "lxc.cgroup.cpuset.cpus = 0,1")
	container := nativeTemplate.New()
	for _, cap := range container.Capabilities {
		realCap := execdriver.GetCapability(cap)
		numCap := fmt.Sprintf("%d", realCap.Value)
		if cap != "MKNOD" && cap != "KILL" {
			grepFile(t, p, fmt.Sprintf("lxc.cap.keep = %s", numCap))
		}
	}
	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = %d", capability.CAP_KILL), true)
	grepFileWithReverse(t, p, fmt.Sprintf("lxc.cap.keep = %d", capability.CAP_MKNOD), true)
}

//.........这里部分代码省略.........
	ulimits := c.hostConfig.Ulimits

	// Merge ulimits with daemon defaults
	ulIdx := make(map[string]*ulimit.Ulimit)
	for _, ul := range ulimits {
		ulIdx[ul.Name] = ul
	}
	for name, ul := range daemon.configStore.Ulimits {
		if _, exists := ulIdx[name]; !exists {
			ulimits = append(ulimits, ul)
		}
	}

	weightDevices, err := getBlkioWeightDevices(c.hostConfig)
	if err != nil {
		return err
	}

	for _, limit := range ulimits {
		rl, err := limit.GetRlimit()
		if err != nil {
			return err
		}
		rlimits = append(rlimits, rl)
	}

	resources := &execdriver.Resources{
		CommonResources: execdriver.CommonResources{
			Memory:            c.hostConfig.Memory,
			MemoryReservation: c.hostConfig.MemoryReservation,
			CPUShares:         c.hostConfig.CPUShares,
			BlkioWeight:       c.hostConfig.BlkioWeight,
		},
		MemorySwap:        c.hostConfig.MemorySwap,
		KernelMemory:      c.hostConfig.KernelMemory,
		CpusetCpus:        c.hostConfig.CpusetCpus,
		CpusetMems:        c.hostConfig.CpusetMems,
		CPUPeriod:         c.hostConfig.CPUPeriod,
		CPUQuota:          c.hostConfig.CPUQuota,
		Rlimits:           rlimits,
		BlkioWeightDevice: weightDevices,
		OomKillDisable:    c.hostConfig.OomKillDisable,
		MemorySwappiness:  -1,
	}

	if c.hostConfig.MemorySwappiness != nil {
		resources.MemorySwappiness = *c.hostConfig.MemorySwappiness
	}

	processConfig := execdriver.ProcessConfig{
		CommonProcessConfig: execdriver.CommonProcessConfig{
			Entrypoint: c.Path,
			Arguments:  c.Args,
			Tty:        c.Config.Tty,
		},
		Privileged: c.hostConfig.Privileged,
		User:       c.Config.User,
	}

	processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
	processConfig.Env = env

	remappedRoot := &execdriver.User{}
	rootUID, rootGID := daemon.GetRemappedUIDGID()
	if rootUID != 0 {
		remappedRoot.UID = rootUID
		remappedRoot.GID = rootGID
	}
	uidMap, gidMap := daemon.GetUIDGIDMaps()

	c.command = &execdriver.Command{
		CommonCommand: execdriver.CommonCommand{
			ID:            c.ID,
			InitPath:      "/.dockerinit",
			MountLabel:    c.getMountLabel(),
			Network:       en,
			ProcessConfig: processConfig,
			ProcessLabel:  c.getProcessLabel(),
			Rootfs:        c.rootfsPath(),
			Resources:     resources,
			WorkingDir:    c.Config.WorkingDir,
		},
		AllowedDevices:     allowedDevices,
		AppArmorProfile:    c.AppArmorProfile,
		AutoCreatedDevices: autoCreatedDevices,
		CapAdd:             c.hostConfig.CapAdd.Slice(),
		CapDrop:            c.hostConfig.CapDrop.Slice(),
		CgroupParent:       c.hostConfig.CgroupParent,
		GIDMapping:         gidMap,
		GroupAdd:           c.hostConfig.GroupAdd,
		Ipc:                ipc,
		Pid:                pid,
		ReadonlyRootfs:     c.hostConfig.ReadonlyRootfs,
		RemappedRoot:       remappedRoot,
		UIDMapping:         uidMap,
		UTS:                uts,
	}

	return nil
}

//.........这里部分代码省略.........
	ipc := &execdriver.Ipc{}

	if c.hostConfig.IpcMode.IsContainer() {
		ic, err := c.getIpcContainer()
		if err != nil {
			return err
		}
		ipc.ContainerID = ic.ID
	} else {
		ipc.HostIpc = c.hostConfig.IpcMode.IsHost()
	}

	pid := &execdriver.Pid{}
	pid.HostPid = c.hostConfig.PidMode.IsHost()

	// Build lists of devices allowed and created within the container.
	userSpecifiedDevices := make([]*configs.Device, len(c.hostConfig.Devices))
	for i, deviceMapping := range c.hostConfig.Devices {
		device, err := devices.DeviceFromPath(deviceMapping.PathOnHost, deviceMapping.CgroupPermissions)
		if err != nil {
			return fmt.Errorf("error gathering device information while adding custom device %q: %s", deviceMapping.PathOnHost, err)
		}
		device.Path = deviceMapping.PathInContainer
		userSpecifiedDevices[i] = device
	}
	allowedDevices := append(configs.DefaultAllowedDevices, userSpecifiedDevices...)

	autoCreatedDevices := append(configs.DefaultAutoCreatedDevices, userSpecifiedDevices...)

	// TODO: this can be removed after lxc-conf is fully deprecated
	lxcConfig, err := mergeLxcConfIntoOptions(c.hostConfig)
	if err != nil {
		return err
	}

	var rlimits []*ulimit.Rlimit
	ulimits := c.hostConfig.Ulimits

	// Merge ulimits with daemon defaults
	ulIdx := make(map[string]*ulimit.Ulimit)
	for _, ul := range ulimits {
		ulIdx[ul.Name] = ul
	}
	for name, ul := range c.daemon.config.Ulimits {
		if _, exists := ulIdx[name]; !exists {
			ulimits = append(ulimits, ul)
		}
	}

	for _, limit := range ulimits {
		rl, err := limit.GetRlimit()
		if err != nil {
			return err
		}
		rlimits = append(rlimits, rl)
	}

	resources := &execdriver.Resources{
		Memory:     c.hostConfig.Memory,
		MemorySwap: c.hostConfig.MemorySwap,
		CpuShares:  c.hostConfig.CpuShares,
		CpusetCpus: c.hostConfig.CpusetCpus,
		Rlimits:    rlimits,
	}

	processConfig := execdriver.ProcessConfig{
		Privileged: c.hostConfig.Privileged,
		Entrypoint: c.Path,
		Arguments:  c.Args,
		Tty:        c.Config.Tty,
		User:       c.Config.User,
	}

	processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
	processConfig.Env = env

	c.command = &execdriver.Command{
		ID:                 c.ID,
		Rootfs:             c.RootfsPath(),
		ReadonlyRootfs:     c.hostConfig.ReadonlyRootfs,
		InitPath:           "/.dockerinit",
		WorkingDir:         c.Config.WorkingDir,
		Network:            en,
		Ipc:                ipc,
		Pid:                pid,
		Resources:          resources,
		AllowedDevices:     allowedDevices,
		AutoCreatedDevices: autoCreatedDevices,
		CapAdd:             c.hostConfig.CapAdd,
		CapDrop:            c.hostConfig.CapDrop,
		ProcessConfig:      processConfig,
		ProcessLabel:       c.GetProcessLabel(),
		MountLabel:         c.GetMountLabel(),
		LxcConfig:          lxcConfig,
		AppArmorProfile:    c.AppArmorProfile,
		CgroupParent:       c.hostConfig.CgroupParent,
	}

	return nil
}

func (daemon *Daemon) populateCommand(c *container.Container, env []string) error {
	en := &execdriver.Network{
		Interface: nil,
	}

	parts := strings.SplitN(string(c.HostConfig.NetworkMode), ":", 2)
	switch parts[0] {
	case "none":
	case "default", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			en.Interface = &execdriver.NetworkInterface{
				MacAddress:   c.Config.MacAddress,
				Bridge:       daemon.configStore.bridgeConfig.VirtualSwitchName,
				PortBindings: c.HostConfig.PortBindings,

				// TODO Windows. Include IPAddress. There already is a
				// property IPAddress on execDrive.CommonNetworkInterface,
				// but there is no CLI option in docker to pass through
				// an IPAddress on docker run.
			}
		}
	default:
		return derr.ErrorCodeInvalidNetworkMode.WithArgs(c.HostConfig.NetworkMode)
	}

	// TODO Windows. More resource controls to be implemented later.
	resources := &execdriver.Resources{
		CommonResources: execdriver.CommonResources{
			CPUShares: c.HostConfig.CPUShares,
		},
	}

	processConfig := execdriver.ProcessConfig{
		CommonProcessConfig: execdriver.CommonProcessConfig{
			Entrypoint: c.Path,
			Arguments:  c.Args,
			Tty:        c.Config.Tty,
		},
		ConsoleSize: c.HostConfig.ConsoleSize,
	}

	processConfig.Env = env

	var layerPaths []string
	img, err := daemon.imageStore.Get(c.ImageID)
	if err != nil {
		return derr.ErrorCodeGetGraph.WithArgs(c.ImageID, err)
	}

	if img.RootFS != nil && img.RootFS.Type == "layers+base" {
		max := len(img.RootFS.DiffIDs)
		for i := 0; i <= max; i++ {
			img.RootFS.DiffIDs = img.RootFS.DiffIDs[:i]
			path, err := layer.GetLayerPath(daemon.layerStore, img.RootFS.ChainID())
			if err != nil {
				return derr.ErrorCodeGetLayer.WithArgs(err)
			}
			// Reverse order, expecting parent most first
			layerPaths = append([]string{path}, layerPaths...)
		}
	}

	m, err := c.RWLayer.Metadata()
	if err != nil {
		return derr.ErrorCodeGetLayerMetadata.WithArgs(err)
	}
	layerFolder := m["dir"]

	var hvPartition bool
	// Work out the isolation (whether it is a hypervisor partition)
	if c.HostConfig.Isolation.IsDefault() {
		// Not specified by caller. Take daemon default
		hvPartition = windows.DefaultIsolation.IsHyperV()
	} else {
		// Take value specified by caller
		hvPartition = c.HostConfig.Isolation.IsHyperV()
	}

	c.Command = &execdriver.Command{
		CommonCommand: execdriver.CommonCommand{
			ID:            c.ID,
			Rootfs:        c.BaseFS,
			WorkingDir:    c.Config.WorkingDir,
			Network:       en,
			MountLabel:    c.GetMountLabel(),
			Resources:     resources,
			ProcessConfig: processConfig,
			ProcessLabel:  c.GetProcessLabel(),
		},
		FirstStart:  !c.HasBeenStartedBefore,
		LayerFolder: layerFolder,
		LayerPaths:  layerPaths,
		Hostname:    c.Config.Hostname,
		Isolation:   string(c.HostConfig.Isolation),
		ArgsEscaped: c.Config.ArgsEscaped,
		HvPartition: hvPartition,
	}

	return nil
}

func populateCommand(ctx context.Context, c *Container, env []string) error {
	en := &execdriver.Network{
		Interface: nil,
	}

	parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
	switch parts[0] {
	case "none":
	case "default", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			en.Interface = &execdriver.NetworkInterface{
				MacAddress:   c.Config.MacAddress,
				Bridge:       c.daemon.configStore.Bridge.VirtualSwitchName,
				PortBindings: c.hostConfig.PortBindings,

				// TODO Windows. Include IPAddress. There already is a
				// property IPAddress on execDrive.CommonNetworkInterface,
				// but there is no CLI option in docker to pass through
				// an IPAddress on docker run.
			}
		}
	default:
		return derr.ErrorCodeInvalidNetworkMode.WithArgs(c.hostConfig.NetworkMode)
	}

	pid := &execdriver.Pid{}

	// TODO Windows. This can probably be factored out.
	pid.HostPid = c.hostConfig.PidMode.IsHost()

	// TODO Windows. More resource controls to be implemented later.
	resources := &execdriver.Resources{
		CPUShares: c.hostConfig.CPUShares,
	}

	// TODO Windows. Further refactoring required (privileged/user)
	processConfig := execdriver.ProcessConfig{
		Privileged:  c.hostConfig.Privileged,
		Entrypoint:  c.Path,
		Arguments:   c.Args,
		Tty:         c.Config.Tty,
		User:        c.Config.User,
		ConsoleSize: c.hostConfig.ConsoleSize,
	}

	processConfig.Env = env

	var layerPaths []string
	img, err := c.daemon.graph.Get(c.ImageID)
	if err != nil {
		return derr.ErrorCodeGetGraph.WithArgs(c.ImageID, err)
	}
	for i := img; i != nil && err == nil; i, err = c.daemon.graph.GetParent(i) {
		lp, err := c.daemon.driver.Get(i.ID, "")
		if err != nil {
			return derr.ErrorCodeGetLayer.WithArgs(c.daemon.driver.String(), i.ID, err)
		}
		layerPaths = append(layerPaths, lp)
		err = c.daemon.driver.Put(i.ID)
		if err != nil {
			return derr.ErrorCodePutLayer.WithArgs(c.daemon.driver.String(), i.ID, err)
		}
	}
	m, err := c.daemon.driver.GetMetadata(c.ID)
	if err != nil {
		return derr.ErrorCodeGetLayerMetadata.WithArgs(err)
	}
	layerFolder := m["dir"]

	// TODO Windows: Factor out remainder of unused fields.
	c.command = &execdriver.Command{
		ID:             c.ID,
		Rootfs:         c.rootfsPath(),
		ReadonlyRootfs: c.hostConfig.ReadonlyRootfs,
		InitPath:       "/.dockerinit",
		WorkingDir:     c.Config.WorkingDir,
		Network:        en,
		Pid:            pid,
		Resources:      resources,
		CapAdd:         c.hostConfig.CapAdd.Slice(),
		CapDrop:        c.hostConfig.CapDrop.Slice(),
		ProcessConfig:  processConfig,
		ProcessLabel:   c.getProcessLabel(),
		MountLabel:     c.getMountLabel(),
		FirstStart:     !c.HasBeenStartedBefore,
		LayerFolder:    layerFolder,
		LayerPaths:     layerPaths,
	}

	return nil
}

//.........这里部分代码省略.........
			BlkioWeight:       c.HostConfig.BlkioWeight,
		},
		MemorySwap:                   c.HostConfig.MemorySwap,
		KernelMemory:                 c.HostConfig.KernelMemory,
		CpusetCpus:                   c.HostConfig.CpusetCpus,
		CpusetMems:                   c.HostConfig.CpusetMems,
		CPUPeriod:                    c.HostConfig.CPUPeriod,
		CPUQuota:                     c.HostConfig.CPUQuota,
		Rlimits:                      rlimits,
		BlkioWeightDevice:            weightDevices,
		BlkioThrottleReadBpsDevice:   readBpsDevice,
		BlkioThrottleWriteBpsDevice:  writeBpsDevice,
		BlkioThrottleReadIOpsDevice:  readIOpsDevice,
		BlkioThrottleWriteIOpsDevice: writeIOpsDevice,
		OomKillDisable:               *c.HostConfig.OomKillDisable,
		MemorySwappiness:             -1,
	}

	if c.HostConfig.MemorySwappiness != nil {
		resources.MemorySwappiness = *c.HostConfig.MemorySwappiness
	}

	processConfig := execdriver.ProcessConfig{
		CommonProcessConfig: execdriver.CommonProcessConfig{
			Entrypoint: c.Path,
			Arguments:  c.Args,
			Tty:        c.Config.Tty,
		},
		Privileged: c.HostConfig.Privileged,
		User:       c.Config.User,
	}

	processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
	processConfig.Env = env

	remappedRoot := &execdriver.User{}
	rootUID, rootGID := daemon.GetRemappedUIDGID()
	if rootUID != 0 {
		remappedRoot.UID = rootUID
		remappedRoot.GID = rootGID
	}
	uidMap, gidMap := daemon.GetUIDGIDMaps()

	if !daemon.seccompEnabled {
		if c.SeccompProfile != "" && c.SeccompProfile != "unconfined" {
			return fmt.Errorf("Seccomp is not enabled in your kernel, cannot run a custom seccomp profile.")
		}
		logrus.Warn("Seccomp is not enabled in your kernel, running container without default profile.")
		c.SeccompProfile = "unconfined"
	}

	defaultCgroupParent := "/docker"
	if daemon.configStore.CgroupParent != "" {
		defaultCgroupParent = daemon.configStore.CgroupParent
	} else {
		for _, option := range daemon.configStore.ExecOptions {
			key, val, err := parsers.ParseKeyValueOpt(option)
			if err != nil || !strings.EqualFold(key, "native.cgroupdriver") {
				continue
			}
			if val == "systemd" {
				defaultCgroupParent = "system.slice"
			}
		}
	}
	c.Command = &execdriver.Command{

func populateCommand(c *Container, env []string) error {
	en := &execdriver.Network{
		Mtu:       c.daemon.config.Mtu,
		Interface: nil,
	}

	parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
	switch parts[0] {

	case "none":
	case "default", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			network := c.NetworkSettings
			en.Interface = &execdriver.NetworkInterface{
				MacAddress: network.MacAddress,
				Bridge:     c.daemon.config.Bridge.VirtualSwitchName,
			}
		}
	default:
		return fmt.Errorf("invalid network mode: %s", c.hostConfig.NetworkMode)
	}

	pid := &execdriver.Pid{}

	// TODO Windows. This can probably be factored out.
	pid.HostPid = c.hostConfig.PidMode.IsHost()

	// TODO Windows. Resource controls to be implemented later.
	resources := &execdriver.Resources{}

	// TODO Windows. Further refactoring required (privileged/user)
	processConfig := execdriver.ProcessConfig{
		Privileged:  c.hostConfig.Privileged,
		Entrypoint:  c.Path,
		Arguments:   c.Args,
		Tty:         c.Config.Tty,
		User:        c.Config.User,
		ConsoleSize: c.hostConfig.ConsoleSize,
	}

	processConfig.Env = env

	var layerFolder string
	var layerPaths []string

	// The following is specific to the Windows driver. We do this to
	// enable VFS to continue operating for development purposes.
	if wd, ok := c.daemon.driver.(*windows.WindowsGraphDriver); ok {
		var err error
		var img *image.Image
		var ids []string

		if img, err = c.daemon.graph.Get(c.ImageID); err != nil {
			return fmt.Errorf("Failed to graph.Get on ImageID %s - %s", c.ImageID, err)
		}
		if ids, err = c.daemon.graph.ParentLayerIds(img); err != nil {
			return fmt.Errorf("Failed to get parentlayer ids %s", img.ID)
		}
		layerPaths = wd.LayerIdsToPaths(ids)
		layerFolder = filepath.Join(wd.Info().HomeDir, filepath.Base(c.ID))
	}

	// TODO Windows: Factor out remainder of unused fields.
	c.command = &execdriver.Command{
		ID:             c.ID,
		Rootfs:         c.RootfsPath(),
		ReadonlyRootfs: c.hostConfig.ReadonlyRootfs,
		InitPath:       "/.dockerinit",
		WorkingDir:     c.Config.WorkingDir,
		Network:        en,
		Pid:            pid,
		Resources:      resources,
		CapAdd:         c.hostConfig.CapAdd.Slice(),
		CapDrop:        c.hostConfig.CapDrop.Slice(),
		ProcessConfig:  processConfig,
		ProcessLabel:   c.GetProcessLabel(),
		MountLabel:     c.GetMountLabel(),
		FirstStart:     !c.HasBeenStartedBefore,
		LayerFolder:    layerFolder,
		LayerPaths:     layerPaths,
	}

	return nil
}

func (daemon *Daemon) populateCommand(c *container.Container, env []string) error {
	en := &execdriver.Network{
		Interface: nil,
	}

	var epList []string

	// Connect all the libnetwork allocated networks to the container
	if c.NetworkSettings != nil {
		for n := range c.NetworkSettings.Networks {
			sn, err := daemon.FindNetwork(n)
			if err != nil {
				continue
			}

			ep, err := c.GetEndpointInNetwork(sn)
			if err != nil {
				continue
			}

			data, err := ep.DriverInfo()
			if err != nil {
				continue
			}
			if data["hnsid"] != nil {
				epList = append(epList, data["hnsid"].(string))
			}
		}
	}

	if daemon.netController == nil {
		parts := strings.SplitN(string(c.HostConfig.NetworkMode), ":", 2)
		switch parts[0] {
		case "none":
		case "default", "": // empty string to support existing containers
			if !c.Config.NetworkDisabled {
				en.Interface = &execdriver.NetworkInterface{
					MacAddress:   c.Config.MacAddress,
					Bridge:       daemon.configStore.bridgeConfig.Iface,
					PortBindings: c.HostConfig.PortBindings,

					// TODO Windows. Include IPAddress. There already is a
					// property IPAddress on execDrive.CommonNetworkInterface,
					// but there is no CLI option in docker to pass through
					// an IPAddress on docker run.
				}
			}
		default:
			return fmt.Errorf("invalid network mode: %s", c.HostConfig.NetworkMode)
		}
	}

	// TODO Windows. More resource controls to be implemented later.
	resources := &execdriver.Resources{
		CommonResources: execdriver.CommonResources{
			CPUShares: c.HostConfig.CPUShares,
		},
	}

	processConfig := execdriver.ProcessConfig{
		CommonProcessConfig: execdriver.CommonProcessConfig{
			Entrypoint: c.Path,
			Arguments:  c.Args,
			Tty:        c.Config.Tty,
		},
		ConsoleSize: c.HostConfig.ConsoleSize,
	}

	processConfig.Env = env

	var layerPaths []string
	img, err := daemon.imageStore.Get(c.ImageID)
	if err != nil {
		return fmt.Errorf("Failed to graph.Get on ImageID %s - %s", c.ImageID, err)
	}

	if img.RootFS != nil && img.RootFS.Type == "layers+base" {
		max := len(img.RootFS.DiffIDs)
		for i := 0; i <= max; i++ {
			img.RootFS.DiffIDs = img.RootFS.DiffIDs[:i]
			path, err := layer.GetLayerPath(daemon.layerStore, img.RootFS.ChainID())
			if err != nil {
				return fmt.Errorf("Failed to get layer path from graphdriver %s for ImageID %s - %s", daemon.layerStore, img.RootFS.ChainID(), err)
			}
			// Reverse order, expecting parent most first
			layerPaths = append([]string{path}, layerPaths...)
		}
	}

	m, err := c.RWLayer.Metadata()
	if err != nil {
		return fmt.Errorf("Failed to get layer metadata - %s", err)
	}
	layerFolder := m["dir"]

	var hvPartition bool
	// Work out the isolation (whether it is a hypervisor partition)
	if c.HostConfig.Isolation.IsDefault() {
		// Not specified by caller. Take daemon default
		hvPartition = windows.DefaultIsolation.IsHyperV()
//.........这里部分代码省略.........

func populateCommand(c *Container, env []string) error {
	en := &execdriver.Network{
		Mtu:       c.daemon.config.Mtu,
		Interface: nil,
	}

	parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
	switch parts[0] {
	case "none":
	case "host":
		en.HostNetworking = true
	case "bridge", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			network := c.NetworkSettings
			en.Interface = &execdriver.NetworkInterface{
				Gateway:     network.Gateway,
				Bridge:      network.Bridge,
				IPAddress:   network.IPAddress,
				IPPrefixLen: network.IPPrefixLen,
			}
		}
	case "container":
		nc, err := c.getNetworkedContainer()
		if err != nil {
			return err
		}
		en.ContainerID = nc.ID
	default:
		return fmt.Errorf("invalid network mode: %s", c.hostConfig.NetworkMode)
	}

	// Build lists of devices allowed and created within the container.
	userSpecifiedDevices := make([]*devices.Device, len(c.hostConfig.Devices))
	for i, deviceMapping := range c.hostConfig.Devices {
		device, err := devices.GetDevice(deviceMapping.PathOnHost, deviceMapping.CgroupPermissions)
		if err != nil {
			return fmt.Errorf("error gathering device information while adding custom device %q: %s", deviceMapping.PathOnHost, err)
		}
		device.Path = deviceMapping.PathInContainer
		userSpecifiedDevices[i] = device
	}
	allowedDevices := append(devices.DefaultAllowedDevices, userSpecifiedDevices...)

	autoCreatedDevices := append(devices.DefaultAutoCreatedDevices, userSpecifiedDevices...)

	// TODO: this can be removed after lxc-conf is fully deprecated
	lxcConfig := mergeLxcConfIntoOptions(c.hostConfig)

	resources := &execdriver.Resources{
		Memory:     c.Config.Memory,
		MemorySwap: c.Config.MemorySwap,
		CpuShares:  c.Config.CpuShares,
		Cpuset:     c.Config.Cpuset,
	}

	processConfig := execdriver.ProcessConfig{
		Privileged: c.hostConfig.Privileged,
		Entrypoint: c.Path,
		Arguments:  c.Args,
		Tty:        c.Config.Tty,
		User:       c.Config.User,
	}

	processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
	processConfig.Env = env

	c.command = &execdriver.Command{
		ID:                 c.ID,
		Rootfs:             c.RootfsPath(),
		InitPath:           "/.dockerinit",
		WorkingDir:         c.Config.WorkingDir,
		Network:            en,
		Resources:          resources,
		AllowedDevices:     allowedDevices,
		AutoCreatedDevices: autoCreatedDevices,
		CapAdd:             c.hostConfig.CapAdd,
		CapDrop:            c.hostConfig.CapDrop,
		ProcessConfig:      processConfig,
		ProcessLabel:       c.GetProcessLabel(),
		MountLabel:         c.GetMountLabel(),
		LxcConfig:          lxcConfig,
		AppArmorProfile:    c.AppArmorProfile,
	}

	return nil
}

func (daemon *Daemon) populateCommand(c *Container, env []string) error {
	en := &execdriver.Network{
		Interface: nil,
	}

	parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
	switch parts[0] {
	case "none":
	case "default", "": // empty string to support existing containers
		if !c.Config.NetworkDisabled {
			en.Interface = &execdriver.NetworkInterface{
				MacAddress:   c.Config.MacAddress,
				Bridge:       daemon.configStore.Bridge.VirtualSwitchName,
				PortBindings: c.hostConfig.PortBindings,

				// TODO Windows. Include IPAddress. There already is a
				// property IPAddress on execDrive.CommonNetworkInterface,
				// but there is no CLI option in docker to pass through
				// an IPAddress on docker run.
			}
		}
	default:
		return derr.ErrorCodeInvalidNetworkMode.WithArgs(c.hostConfig.NetworkMode)
	}

	// TODO Windows. More resource controls to be implemented later.
	resources := &execdriver.Resources{
		CommonResources: execdriver.CommonResources{
			CPUShares: c.hostConfig.CPUShares,
		},
	}

	processConfig := execdriver.ProcessConfig{
		CommonProcessConfig: execdriver.CommonProcessConfig{
			Entrypoint: c.Path,
			Arguments:  c.Args,
			Tty:        c.Config.Tty,
		},
		ConsoleSize: c.hostConfig.ConsoleSize,
	}

	processConfig.Env = env

	var layerPaths []string
	img, err := daemon.graph.Get(c.ImageID)
	if err != nil {
		return derr.ErrorCodeGetGraph.WithArgs(c.ImageID, err)
	}
	for i := img; i != nil && err == nil; i, err = daemon.graph.GetParent(i) {
		lp, err := daemon.driver.Get(i.ID, "")
		if err != nil {
			return derr.ErrorCodeGetLayer.WithArgs(daemon.driver.String(), i.ID, err)
		}
		layerPaths = append(layerPaths, lp)
		err = daemon.driver.Put(i.ID)
		if err != nil {
			return derr.ErrorCodePutLayer.WithArgs(daemon.driver.String(), i.ID, err)
		}
	}
	m, err := daemon.driver.GetMetadata(c.ID)
	if err != nil {
		return derr.ErrorCodeGetLayerMetadata.WithArgs(err)
	}
	layerFolder := m["dir"]

	c.command = &execdriver.Command{
		CommonCommand: execdriver.CommonCommand{
			ID:            c.ID,
			Rootfs:        c.rootfsPath(),
			InitPath:      "/.dockerinit",
			WorkingDir:    c.Config.WorkingDir,
			Network:       en,
			MountLabel:    c.getMountLabel(),
			Resources:     resources,
			ProcessConfig: processConfig,
			ProcessLabel:  c.getProcessLabel(),
		},
		FirstStart:  !c.HasBeenStartedBefore,
		LayerFolder: layerFolder,
		LayerPaths:  layerPaths,
		Hostname:    c.Config.Hostname,
		Isolation:   c.hostConfig.Isolation,
	}

	return nil
}