Golang container.Isolation函数代码示例

// setDefaultIsolation determine the default isolation mode for the
// daemon to run in. This is only applicable on Windows
func (daemon *Daemon) setDefaultIsolation() error {
	daemon.defaultIsolation = containertypes.Isolation("process")
	// On client SKUs, default to Hyper-V
	if system.IsWindowsClient() {
		daemon.defaultIsolation = containertypes.Isolation("hyperv")
	}
	for _, option := range daemon.configStore.ExecOptions {
		key, val, err := parsers.ParseKeyValueOpt(option)
		if err != nil {
			return err
		}
		key = strings.ToLower(key)
		switch key {

		case "isolation":
			if !containertypes.Isolation(val).IsValid() {
				return fmt.Errorf("Invalid exec-opt value for 'isolation':'%s'", val)
			}
			if containertypes.Isolation(val).IsHyperV() {
				daemon.defaultIsolation = containertypes.Isolation("hyperv")
			}
			if containertypes.Isolation(val).IsProcess() {
				if system.IsWindowsClient() {
					return fmt.Errorf("Windows client operating systems only support Hyper-V containers")
				}
				daemon.defaultIsolation = containertypes.Isolation("process")
			}
		default:
			return fmt.Errorf("Unrecognised exec-opt '%s'\n", key)
		}
	}

	logrus.Infof("Windows default isolation mode: %s", daemon.defaultIsolation)
	return nil
}

func TestIsolation(t *testing.T) {
	ctx := &ctx.Context{}
	sc := &config.ServiceConfig{
		Isolation: "default",
	}
	_, hostCfg, err := Convert(sc, ctx.Context, nil)
	assert.Nil(t, err)

	assert.Equal(t, container.Isolation("default"), hostCfg.Isolation)
}

// callDecodeContainerConfigIsolation is a utility function to call
// DecodeContainerConfig for validating isolation
func callDecodeContainerConfigIsolation(isolation string) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
	var (
		b   []byte
		err error
	)
	w := ContainerConfigWrapper{
		Config: &container.Config{},
		HostConfig: &container.HostConfig{
			NetworkMode: "none",
			Isolation:   container.Isolation(isolation)},
	}
	if b, err = json.Marshal(w); err != nil {
		return nil, nil, nil, fmt.Errorf("Error on marshal %s", err.Error())
	}
	return DecodeContainerConfig(bytes.NewReader(b))
}

//.........这里部分代码省略.........
		WorkingDir:      copts.workingDir,
		Labels:          ConvertKVStringsToMap(labels),
		Healthcheck:     healthConfig,
	}
	if flags.Changed("stop-signal") {
		config.StopSignal = copts.stopSignal
	}

	hostConfig := &container.HostConfig{
		Binds:           binds,
		ContainerIDFile: copts.containerIDFile,
		OomScoreAdj:     copts.oomScoreAdj,
		AutoRemove:      copts.autoRemove,
		Privileged:      copts.privileged,
		PortBindings:    portBindings,
		Links:           copts.links.GetAll(),
		PublishAllPorts: copts.publishAll,
		// Make sure the dns fields are never nil.
		// New containers don't ever have those fields nil,
		// but pre created containers can still have those nil values.
		// See https://github.com/docker/docker/pull/17779
		// for a more detailed explanation on why we don't want that.
		DNS:            copts.dns.GetAllOrEmpty(),
		DNSSearch:      copts.dnsSearch.GetAllOrEmpty(),
		DNSOptions:     copts.dnsOptions.GetAllOrEmpty(),
		ExtraHosts:     copts.extraHosts.GetAll(),
		VolumesFrom:    copts.volumesFrom.GetAll(),
		NetworkMode:    container.NetworkMode(copts.netMode),
		IpcMode:        ipcMode,
		PidMode:        pidMode,
		UTSMode:        utsMode,
		UsernsMode:     usernsMode,
		CapAdd:         strslice.StrSlice(copts.capAdd.GetAll()),
		CapDrop:        strslice.StrSlice(copts.capDrop.GetAll()),
		GroupAdd:       copts.groupAdd.GetAll(),
		RestartPolicy:  restartPolicy,
		SecurityOpt:    securityOpts,
		StorageOpt:     storageOpts,
		ReadonlyRootfs: copts.readonlyRootfs,
		LogConfig:      container.LogConfig{Type: copts.loggingDriver, Config: loggingOpts},
		VolumeDriver:   copts.volumeDriver,
		Isolation:      container.Isolation(copts.isolation),
		ShmSize:        shmSize,
		Resources:      resources,
		Tmpfs:          tmpfs,
		Sysctls:        copts.sysctls.GetAll(),
		Runtime:        copts.runtime,
	}

	// only set this value if the user provided the flag, else it should default to nil
	if flags.Changed("init") {
		hostConfig.Init = &copts.init
	}

	// When allocating stdin in attached mode, close stdin at client disconnect
	if config.OpenStdin && config.AttachStdin {
		config.StdinOnce = true
	}

	networkingConfig := &networktypes.NetworkingConfig{
		EndpointsConfig: make(map[string]*networktypes.EndpointSettings),
	}

	if copts.ipv4Address != "" || copts.ipv6Address != "" || copts.linkLocalIPs.Len() > 0 {
		epConfig := &networktypes.EndpointSettings{}
		networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig

		epConfig.IPAMConfig = &networktypes.EndpointIPAMConfig{
			IPv4Address: copts.ipv4Address,
			IPv6Address: copts.ipv6Address,
		}

		if copts.linkLocalIPs.Len() > 0 {
			epConfig.IPAMConfig.LinkLocalIPs = make([]string, copts.linkLocalIPs.Len())
			copy(epConfig.IPAMConfig.LinkLocalIPs, copts.linkLocalIPs.GetAll())
		}
	}

	if hostConfig.NetworkMode.IsUserDefined() && len(hostConfig.Links) > 0 {
		epConfig := networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)]
		if epConfig == nil {
			epConfig = &networktypes.EndpointSettings{}
		}
		epConfig.Links = make([]string, len(hostConfig.Links))
		copy(epConfig.Links, hostConfig.Links)
		networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig
	}

	if copts.aliases.Len() > 0 {
		epConfig := networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)]
		if epConfig == nil {
			epConfig = &networktypes.EndpointSettings{}
		}
		epConfig.Aliases = make([]string, copts.aliases.Len())
		copy(epConfig.Aliases, copts.aliases.GetAll())
		networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig
	}

	return config, hostConfig, networkingConfig, nil
}

//.........这里部分代码省略.........
		if err != nil {
			return err
		}
		memory = parsedMemory
	}

	var memorySwap int64
	if options.memorySwap != "" {
		if options.memorySwap == "-1" {
			memorySwap = -1
		} else {
			parsedMemorySwap, err := units.RAMInBytes(options.memorySwap)
			if err != nil {
				return err
			}
			memorySwap = parsedMemorySwap
		}
	}

	var shmSize int64
	if options.shmSize != "" {
		shmSize, err = units.RAMInBytes(options.shmSize)
		if err != nil {
			return err
		}
	}

	authConfig, _ := dockerCli.CredentialsStore().GetAll()
	buildOptions := types.ImageBuildOptions{
		Memory:         memory,
		MemorySwap:     memorySwap,
		Tags:           options.tags.GetAll(),
		SuppressOutput: options.quiet,
		NoCache:        options.noCache,
		Remove:         options.rm,
		ForceRemove:    options.forceRm,
		PullParent:     options.pull,
		Isolation:      container.Isolation(options.isolation),
		CPUSetCPUs:     options.cpuSetCpus,
		CPUSetMems:     options.cpuSetMems,
		CPUShares:      options.cpuShares,
		CPUQuota:       options.cpuQuota,
		CPUPeriod:      options.cpuPeriod,
		CgroupParent:   options.cgroupParent,
		Dockerfile:     relDockerfile,
		ShmSize:        shmSize,
		Ulimits:        options.ulimits.GetList(),
		BuildArgs:      runconfigopts.ConvertKVStringsToMap(options.buildArgs.GetAll()),
		AuthConfigs:    authConfig,
		Labels:         runconfigopts.ConvertKVStringsToMap(options.labels.GetAll()),
		CacheFrom:      options.cacheFrom,
	}

	response, err := dockerCli.Client().ImageBuild(ctx, body, buildOptions)
	if err != nil {
		if options.quiet {
			fmt.Fprintf(dockerCli.Err(), "%s", progBuff)
		}
		return err
	}
	defer response.Body.Close()

	err = jsonmessage.DisplayJSONMessagesStream(response.Body, buildBuff, dockerCli.Out().FD(), dockerCli.Out().IsTerminal(), nil)
	if err != nil {
		if jerr, ok := err.(*jsonmessage.JSONError); ok {
			// If no error code is set, default to 1
			if jerr.Code == 0 {
				jerr.Code = 1
			}
			if options.quiet {
				fmt.Fprintf(dockerCli.Err(), "%s%s", progBuff, buildBuff)
			}
			return cli.StatusError{Status: jerr.Message, StatusCode: jerr.Code}
		}
	}

	// Windows: show error message about modified file permissions if the
	// daemon isn't running Windows.
	if response.OSType != "windows" && runtime.GOOS == "windows" && !options.quiet {
		fmt.Fprintln(dockerCli.Err(), `SECURITY WARNING: You are building a Docker image from Windows against a non-Windows Docker host. All files and directories added to build context will have '-rwxr-xr-x' permissions. It is recommended to double check and reset permissions for sensitive files and directories.`)
	}

	// Everything worked so if -q was provided the output from the daemon
	// should be just the image ID and we'll print that to stdout.
	if options.quiet {
		fmt.Fprintf(dockerCli.Out(), "%s", buildBuff)
	}

	if command.IsTrusted() {
		// Since the build was successful, now we must tag any of the resolved
		// images from the above Dockerfile rewrite.
		for _, resolved := range resolvedTags {
			if err := TagTrusted(ctx, dockerCli, resolved.digestRef, resolved.tagRef); err != nil {
				return err
			}
		}
	}

	return nil
}

func newImageBuildOptions(ctx context.Context, r *http.Request) (*types.ImageBuildOptions, error) {
	version := httputils.VersionFromContext(ctx)
	options := &types.ImageBuildOptions{}
	if httputils.BoolValue(r, "forcerm") && versions.GreaterThanOrEqualTo(version, "1.12") {
		options.Remove = true
	} else if r.FormValue("rm") == "" && versions.GreaterThanOrEqualTo(version, "1.12") {
		options.Remove = true
	} else {
		options.Remove = httputils.BoolValue(r, "rm")
	}
	if httputils.BoolValue(r, "pull") && versions.GreaterThanOrEqualTo(version, "1.16") {
		options.PullParent = true
	}

	options.Dockerfile = r.FormValue("dockerfile")
	options.SuppressOutput = httputils.BoolValue(r, "q")
	options.NoCache = httputils.BoolValue(r, "nocache")
	options.ForceRemove = httputils.BoolValue(r, "forcerm")
	options.MemorySwap = httputils.Int64ValueOrZero(r, "memswap")
	options.Memory = httputils.Int64ValueOrZero(r, "memory")
	options.CPUShares = httputils.Int64ValueOrZero(r, "cpushares")
	options.CPUPeriod = httputils.Int64ValueOrZero(r, "cpuperiod")
	options.CPUQuota = httputils.Int64ValueOrZero(r, "cpuquota")
	options.CPUSetCPUs = r.FormValue("cpusetcpus")
	options.CPUSetMems = r.FormValue("cpusetmems")
	options.CgroupParent = r.FormValue("cgroupparent")
	options.Tags = r.Form["t"]

	if r.Form.Get("shmsize") != "" {
		shmSize, err := strconv.ParseInt(r.Form.Get("shmsize"), 10, 64)
		if err != nil {
			return nil, err
		}
		options.ShmSize = shmSize
	}

	if i := container.Isolation(r.FormValue("isolation")); i != "" {
		if !container.Isolation.IsValid(i) {
			return nil, fmt.Errorf("Unsupported isolation: %q", i)
		}
		options.Isolation = i
	}

	var buildUlimits = []*units.Ulimit{}
	ulimitsJSON := r.FormValue("ulimits")
	if ulimitsJSON != "" {
		if err := json.Unmarshal([]byte(ulimitsJSON), &buildUlimits); err != nil {
			return nil, err
		}
		options.Ulimits = buildUlimits
	}

	var buildArgs = map[string]string{}
	buildArgsJSON := r.FormValue("buildargs")
	if buildArgsJSON != "" {
		if err := json.Unmarshal([]byte(buildArgsJSON), &buildArgs); err != nil {
			return nil, err
		}
		options.BuildArgs = buildArgs
	}
	var labels = map[string]string{}
	labelsJSON := r.FormValue("labels")
	if labelsJSON != "" {
		if err := json.Unmarshal([]byte(labelsJSON), &labels); err != nil {
			return nil, err
		}
		options.Labels = labels
	}

	var cacheFrom = []string{}
	cacheFromJSON := r.FormValue("cachefrom")
	if cacheFromJSON != "" {
		if err := json.Unmarshal([]byte(cacheFromJSON), &cacheFrom); err != nil {
			return nil, err
		}
		options.CacheFrom = cacheFrom
	}

	return options, nil
}

// createContainerPlatformSpecificSettings performs platform specific container create functionality
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig) error {
	// Make sure the host config has the default daemon isolation if not specified by caller.
	if containertypes.Isolation.IsDefault(containertypes.Isolation(hostConfig.Isolation)) {
		hostConfig.Isolation = daemon.defaultIsolation
	}

	for spec := range config.Volumes {

		mp, err := volume.ParseMountSpec(spec, hostConfig.VolumeDriver)
		if err != nil {
			return fmt.Errorf("Unrecognised volume spec: %v", err)
		}

		// If the mountpoint doesn't have a name, generate one.
		if len(mp.Name) == 0 {
			mp.Name = stringid.GenerateNonCryptoID()
		}

		// Skip volumes for which we already have something mounted on that
		// destination because of a --volume-from.
		if container.IsDestinationMounted(mp.Destination) {
			continue
		}

		volumeDriver := hostConfig.VolumeDriver

		// Create the volume in the volume driver. If it doesn't exist,
		// a new one will be created.
		v, err := daemon.volumes.CreateWithRef(mp.Name, volumeDriver, container.ID, nil, nil)
		if err != nil {
			return err
		}

		// FIXME Windows: This code block is present in the Linux version and
		// allows the contents to be copied to the container FS prior to it
		// being started. However, the function utilizes the FollowSymLinkInScope
		// path which does not cope with Windows volume-style file paths. There
		// is a separate effort to resolve this (@swernli), so this processing
		// is deferred for now. A case where this would be useful is when
		// a dockerfile includes a VOLUME statement, but something is created
		// in that directory during the dockerfile processing. What this means
		// on Windows for TP5 is that in that scenario, the contents will not
		// copied, but that's (somewhat) OK as HCS will bomb out soon after
		// at it doesn't support mapped directories which have contents in the
		// destination path anyway.
		//
		// Example for repro later:
		//   FROM windowsservercore
		//   RUN mkdir c:\myvol
		//   RUN copy c:\windows\system32\ntdll.dll c:\myvol
		//   VOLUME "c:\myvol"
		//
		// Then
		//   docker build -t vol .
		//   docker run -it --rm vol cmd  <-- This is where HCS will error out.
		//
		//	// never attempt to copy existing content in a container FS to a shared volume
		//	if v.DriverName() == volume.DefaultDriverName {
		//		if err := container.CopyImagePathContent(v, mp.Destination); err != nil {
		//			return err
		//		}
		//	}

		// Add it to container.MountPoints
		container.AddMountPointWithVolume(mp.Destination, v, mp.RW)
	}
	return nil
}

//.........这里部分代码省略.........
		CgroupParent:     c.CgroupParent,
		Memory:           int64(c.MemLimit),
		MemorySwap:       int64(c.MemSwapLimit),
		MemorySwappiness: &memorySwappiness,
		CPUShares:        int64(c.CPUShares),
		CPUQuota:         int64(c.CPUQuota),
		CpusetCpus:       c.CPUSet,
		Ulimits:          ulimits,
		Devices:          deviceMappings,
	}

	networkMode := c.NetworkMode
	if c.NetworkMode == "" {
		if c.Networks != nil && len(c.Networks.Networks) > 0 {
			networkMode = c.Networks.Networks[0].RealName
		}
	} else {
		switch {
		case strings.HasPrefix(c.NetworkMode, "service:"):
			serviceName := c.NetworkMode[8:]
			if serviceConfig, ok := ctx.Project.ServiceConfigs.Get(serviceName); ok {
				// FIXME(vdemeester) this is actually not right, should be fixed but not there
				service, err := ctx.ServiceFactory.Create(ctx.Project, serviceName, serviceConfig)
				if err != nil {
					return nil, nil, err
				}
				containers, err := service.Containers(context.Background())
				if err != nil {
					return nil, nil, err
				}
				if len(containers) != 0 {
					container := containers[0]
					containerID, err := container.ID()
					if err != nil {
						return nil, nil, err
					}
					networkMode = "container:" + containerID
				}
				// FIXME(vdemeester) log/warn in case of len(containers) == 0
			}
		case strings.HasPrefix(c.NetworkMode, "container:"):
			containerName := c.NetworkMode[10:]
			client := clientFactory.Create(nil)
			container, err := composecontainer.Get(context.Background(), client, containerName)
			if err != nil {
				return nil, nil, err
			}
			networkMode = "container:" + container.ID
		default:
			// do nothing :)
		}
	}

	tmpfs := map[string]string{}
	for _, path := range c.Tmpfs {
		split := strings.SplitN(path, ":", 2)
		if len(split) == 1 {
			tmpfs[split[0]] = ""
		} else if len(split) == 2 {
			tmpfs[split[0]] = split[1]
		}
	}

	hostConfig := &container.HostConfig{
		VolumesFrom: volumesFrom,
		CapAdd:      strslice.StrSlice(utils.CopySlice(c.CapAdd)),
		CapDrop:     strslice.StrSlice(utils.CopySlice(c.CapDrop)),
		GroupAdd:    c.GroupAdd,
		ExtraHosts:  utils.CopySlice(c.ExtraHosts),
		Privileged:  c.Privileged,
		Binds:       Filter(vols, isBind),
		DNS:         utils.CopySlice(c.DNS),
		DNSOptions:  utils.CopySlice(c.DNSOpts),
		DNSSearch:   utils.CopySlice(c.DNSSearch),
		Isolation:   container.Isolation(c.Isolation),
		LogConfig: container.LogConfig{
			Type:   c.Logging.Driver,
			Config: utils.CopyMap(c.Logging.Options),
		},
		NetworkMode:    container.NetworkMode(networkMode),
		ReadonlyRootfs: c.ReadOnly,
		OomScoreAdj:    int(c.OomScoreAdj),
		PidMode:        container.PidMode(c.Pid),
		UTSMode:        container.UTSMode(c.Uts),
		IpcMode:        container.IpcMode(c.Ipc),
		PortBindings:   portBindings,
		RestartPolicy:  *restartPolicy,
		ShmSize:        int64(c.ShmSize),
		SecurityOpt:    utils.CopySlice(c.SecurityOpt),
		Tmpfs:          tmpfs,
		VolumeDriver:   c.VolumeDriver,
		Resources:      resources,
	}

	if config.Labels == nil {
		config.Labels = map[string]string{}
	}

	return config, hostConfig, nil
}

func TestImageBuild(t *testing.T) {
	v1 := "value1"
	v2 := "value2"
	emptyRegistryConfig := "bnVsbA=="
	buildCases := []struct {
		buildOptions           types.ImageBuildOptions
		expectedQueryParams    map[string]string
		expectedTags           []string
		expectedRegistryConfig string
	}{
		{
			buildOptions: types.ImageBuildOptions{
				SuppressOutput: true,
				NoCache:        true,
				Remove:         true,
				ForceRemove:    true,
				PullParent:     true,
			},
			expectedQueryParams: map[string]string{
				"q":       "1",
				"nocache": "1",
				"rm":      "1",
				"forcerm": "1",
				"pull":    "1",
			},
			expectedTags:           []string{},
			expectedRegistryConfig: emptyRegistryConfig,
		},
		{
			buildOptions: types.ImageBuildOptions{
				SuppressOutput: false,
				NoCache:        false,
				Remove:         false,
				ForceRemove:    false,
				PullParent:     false,
			},
			expectedQueryParams: map[string]string{
				"q":       "",
				"nocache": "",
				"rm":      "0",
				"forcerm": "",
				"pull":    "",
			},
			expectedTags:           []string{},
			expectedRegistryConfig: emptyRegistryConfig,
		},
		{
			buildOptions: types.ImageBuildOptions{
				RemoteContext: "remoteContext",
				Isolation:     container.Isolation("isolation"),
				CPUSetCPUs:    "2",
				CPUSetMems:    "12",
				CPUShares:     20,
				CPUQuota:      10,
				CPUPeriod:     30,
				Memory:        256,
				MemorySwap:    512,
				ShmSize:       10,
				CgroupParent:  "cgroup_parent",
				Dockerfile:    "Dockerfile",
			},
			expectedQueryParams: map[string]string{
				"remote":       "remoteContext",
				"isolation":    "isolation",
				"cpusetcpus":   "2",
				"cpusetmems":   "12",
				"cpushares":    "20",
				"cpuquota":     "10",
				"cpuperiod":    "30",
				"memory":       "256",
				"memswap":      "512",
				"shmsize":      "10",
				"cgroupparent": "cgroup_parent",
				"dockerfile":   "Dockerfile",
				"rm":           "0",
			},
			expectedTags:           []string{},
			expectedRegistryConfig: emptyRegistryConfig,
		},
		{
			buildOptions: types.ImageBuildOptions{
				BuildArgs: map[string]*string{
					"ARG1": &v1,
					"ARG2": &v2,
					"ARG3": nil,
				},
			},
			expectedQueryParams: map[string]string{
				"buildargs": `{"ARG1":"value1","ARG2":"value2","ARG3":null}`,
				"rm":        "0",
			},
			expectedTags:           []string{},
			expectedRegistryConfig: emptyRegistryConfig,
		},
		{
			buildOptions: types.ImageBuildOptions{
				Ulimits: []*units.Ulimit{
					{
						Name: "nproc",
						Hard: 65557,
//.........这里部分代码省略.........

func newImageBuildOptions(ctx context.Context, r *http.Request) (*types.ImageBuildOptions, error) {
	version := httputils.VersionFromContext(ctx)
	options := &types.ImageBuildOptions{}
	if httputils.BoolValue(r, "forcerm") && versions.GreaterThanOrEqualTo(version, "1.12") {
		options.Remove = true
	} else if r.FormValue("rm") == "" && versions.GreaterThanOrEqualTo(version, "1.12") {
		options.Remove = true
	} else {
		options.Remove = httputils.BoolValue(r, "rm")
	}
	if httputils.BoolValue(r, "pull") && versions.GreaterThanOrEqualTo(version, "1.16") {
		options.PullParent = true
	}

	options.Dockerfile = r.FormValue("dockerfile")
	options.SuppressOutput = httputils.BoolValue(r, "q")
	options.NoCache = httputils.BoolValue(r, "nocache")
	options.ForceRemove = httputils.BoolValue(r, "forcerm")
	options.MemorySwap = httputils.Int64ValueOrZero(r, "memswap")
	options.Memory = httputils.Int64ValueOrZero(r, "memory")
	options.CPUShares = httputils.Int64ValueOrZero(r, "cpushares")
	options.CPUPeriod = httputils.Int64ValueOrZero(r, "cpuperiod")
	options.CPUQuota = httputils.Int64ValueOrZero(r, "cpuquota")
	options.CPUSetCPUs = r.FormValue("cpusetcpus")
	options.CPUSetMems = r.FormValue("cpusetmems")
	options.CgroupParent = r.FormValue("cgroupparent")
	options.NetworkMode = r.FormValue("networkmode")
	options.Tags = r.Form["t"]
	options.SecurityOpt = r.Form["securityopt"]
	options.Squash = httputils.BoolValue(r, "squash")

	if r.Form.Get("shmsize") != "" {
		shmSize, err := strconv.ParseInt(r.Form.Get("shmsize"), 10, 64)
		if err != nil {
			return nil, err
		}
		options.ShmSize = shmSize
	}

	if i := container.Isolation(r.FormValue("isolation")); i != "" {
		if !container.Isolation.IsValid(i) {
			return nil, fmt.Errorf("Unsupported isolation: %q", i)
		}
		options.Isolation = i
	}

	if runtime.GOOS != "windows" && options.SecurityOpt != nil {
		return nil, fmt.Errorf("the daemon on this platform does not support --security-opt to build")
	}

	var buildUlimits = []*units.Ulimit{}
	ulimitsJSON := r.FormValue("ulimits")
	if ulimitsJSON != "" {
		if err := json.Unmarshal([]byte(ulimitsJSON), &buildUlimits); err != nil {
			return nil, err
		}
		options.Ulimits = buildUlimits
	}

	var buildArgs = map[string]*string{}
	buildArgsJSON := r.FormValue("buildargs")

	// Note that there are two ways a --build-arg might appear in the
	// json of the query param:
	//     "foo":"bar"
	// and "foo":nil
	// The first is the normal case, ie. --build-arg foo=bar
	// or  --build-arg foo
	// where foo's value was picked up from an env var.
	// The second ("foo":nil) is where they put --build-arg foo
	// but "foo" isn't set as an env var. In that case we can't just drop
	// the fact they mentioned it, we need to pass that along to the builder
	// so that it can print a warning about "foo" being unused if there is
	// no "ARG foo" in the Dockerfile.
	if buildArgsJSON != "" {
		if err := json.Unmarshal([]byte(buildArgsJSON), &buildArgs); err != nil {
			return nil, err
		}
		options.BuildArgs = buildArgs
	}

	var labels = map[string]string{}
	labelsJSON := r.FormValue("labels")
	if labelsJSON != "" {
		if err := json.Unmarshal([]byte(labelsJSON), &labels); err != nil {
			return nil, err
		}
		options.Labels = labels
	}

	var cacheFrom = []string{}
	cacheFromJSON := r.FormValue("cachefrom")
	if cacheFromJSON != "" {
		if err := json.Unmarshal([]byte(cacheFromJSON), &cacheFrom); err != nil {
			return nil, err
		}
		options.CacheFrom = cacheFrom
	}

	return options, nil
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		if len(split) == 1 {
			tmpfs[split[0]] = ""
		} else if len(split) == 2 {
			tmpfs[split[0]] = split[1]
		}
	}

	blkioWeightDevices := []*blkiodev.WeightDevice{}
	for _, blkioWeightDevice := range c.BlkioWeightDevice {
		split := strings.Split(blkioWeightDevice, ":")
		if len(split) == 2 {
			weight, err := strconv.ParseUint(split[1], 10, 16)
			if err != nil {
				return nil, nil, err
			}
			blkioWeightDevices = append(blkioWeightDevices, &blkiodev.WeightDevice{
				Path:   split[0],
				Weight: uint16(weight),
			})
		}
	}

	blkioDeviceReadBps, err := getThrottleDevice(c.DeviceReadBps)
	if err != nil {
		return nil, nil, err
	}

	blkioDeviceReadIOps, err := getThrottleDevice(c.DeviceReadIOps)
	if err != nil {
		return nil, nil, err
	}

	blkioDeviceWriteBps, err := getThrottleDevice(c.DeviceWriteBps)
	if err != nil {
		return nil, nil, err
	}

	blkioDeviceWriteIOps, err := getThrottleDevice(c.DeviceWriteIOps)
	if err != nil {
		return nil, nil, err
	}

	resources := container.Resources{
		BlkioWeight:          uint16(c.BlkioWeight),
		BlkioWeightDevice:    blkioWeightDevices,
		CgroupParent:         c.CgroupParent,
		Memory:               int64(c.MemLimit),
		MemoryReservation:    int64(c.MemReservation),
		MemorySwap:           int64(c.MemSwapLimit),
		MemorySwappiness:     &memorySwappiness,
		CPUPeriod:            int64(c.CPUPeriod),
		CPUShares:            int64(c.CPUShares),
		CPUQuota:             int64(c.CPUQuota),
		CpusetCpus:           c.CPUSet,
		Ulimits:              ulimits,
		Devices:              deviceMappings,
		OomKillDisable:       &c.OomKillDisable,
		BlkioDeviceReadBps:   blkioDeviceReadBps,
		BlkioDeviceReadIOps:  blkioDeviceReadIOps,
		BlkioDeviceWriteBps:  blkioDeviceWriteBps,
		BlkioDeviceWriteIOps: blkioDeviceWriteIOps,
	}

	hostConfig := &container.HostConfig{
		VolumesFrom: volumesFrom,
		CapAdd:      strslice.StrSlice(utils.CopySlice(c.CapAdd)),
		CapDrop:     strslice.StrSlice(utils.CopySlice(c.CapDrop)),
		GroupAdd:    c.GroupAdd,
		ExtraHosts:  utils.CopySlice(c.ExtraHosts),
		Privileged:  c.Privileged,
		Binds:       Filter(vols, isBind),
		DNS:         utils.CopySlice(c.DNS),
		DNSOptions:  utils.CopySlice(c.DNSOpt),
		DNSSearch:   utils.CopySlice(c.DNSSearch),
		Isolation:   container.Isolation(c.Isolation),
		LogConfig: container.LogConfig{
			Type:   c.Logging.Driver,
			Config: utils.CopyMap(c.Logging.Options),
		},
		NetworkMode:    container.NetworkMode(c.NetworkMode),
		ReadonlyRootfs: c.ReadOnly,
		OomScoreAdj:    int(c.OomScoreAdj),
		PidMode:        container.PidMode(c.Pid),
		UTSMode:        container.UTSMode(c.Uts),
		IpcMode:        container.IpcMode(c.Ipc),
		PortBindings:   portBindings,
		RestartPolicy:  *restartPolicy,
		ShmSize:        int64(c.ShmSize),
		SecurityOpt:    utils.CopySlice(c.SecurityOpt),
		Tmpfs:          tmpfs,
		VolumeDriver:   c.VolumeDriver,
		Resources:      resources,
	}

	if config.Labels == nil {
		config.Labels = map[string]string{}
	}

	return config, hostConfig, nil
}