| package daemon |
| |
| import ( |
| "fmt" |
| "net" |
| "runtime" |
| "strings" |
| "time" |
| |
| "github.com/pkg/errors" |
| |
| "github.com/Sirupsen/logrus" |
| apierrors "github.com/docker/docker/api/errors" |
| "github.com/docker/docker/api/types" |
| containertypes "github.com/docker/docker/api/types/container" |
| networktypes "github.com/docker/docker/api/types/network" |
| "github.com/docker/docker/container" |
| "github.com/docker/docker/image" |
| "github.com/docker/docker/layer" |
| "github.com/docker/docker/pkg/idtools" |
| "github.com/docker/docker/pkg/stringid" |
| "github.com/docker/docker/runconfig" |
| volumestore "github.com/docker/docker/volume/store" |
| "github.com/opencontainers/runc/libcontainer/label" |
| ) |
| |
| // CreateManagedContainer creates a container that is managed by a Service |
| func (daemon *Daemon) CreateManagedContainer(params types.ContainerCreateConfig) (containertypes.ContainerCreateCreatedBody, error) { |
| return daemon.containerCreate(params, true) |
| } |
| |
| // ContainerCreate creates a regular container |
| func (daemon *Daemon) ContainerCreate(params types.ContainerCreateConfig) (containertypes.ContainerCreateCreatedBody, error) { |
| return daemon.containerCreate(params, false) |
| } |
| |
| func (daemon *Daemon) containerCreate(params types.ContainerCreateConfig, managed bool) (containertypes.ContainerCreateCreatedBody, error) { |
| start := time.Now() |
| if params.Config == nil { |
| return containertypes.ContainerCreateCreatedBody{}, fmt.Errorf("Config cannot be empty in order to create a container") |
| } |
| |
| warnings, err := daemon.verifyContainerSettings(params.HostConfig, params.Config, false) |
| if err != nil { |
| return containertypes.ContainerCreateCreatedBody{Warnings: warnings}, err |
| } |
| |
| err = daemon.verifyNetworkingConfig(params.NetworkingConfig) |
| if err != nil { |
| return containertypes.ContainerCreateCreatedBody{Warnings: warnings}, err |
| } |
| |
| if params.HostConfig == nil { |
| params.HostConfig = &containertypes.HostConfig{} |
| } |
| err = daemon.adaptContainerSettings(params.HostConfig, params.AdjustCPUShares) |
| if err != nil { |
| return containertypes.ContainerCreateCreatedBody{Warnings: warnings}, err |
| } |
| |
| container, err := daemon.create(params, managed) |
| if err != nil { |
| return containertypes.ContainerCreateCreatedBody{Warnings: warnings}, daemon.imageNotExistToErrcode(err) |
| } |
| containerActions.WithValues("create").UpdateSince(start) |
| |
| return containertypes.ContainerCreateCreatedBody{ID: container.ID, Warnings: warnings}, nil |
| } |
| |
| // Create creates a new container from the given configuration with a given name. |
| func (daemon *Daemon) create(params types.ContainerCreateConfig, managed bool) (retC *container.Container, retErr error) { |
| var ( |
| container *container.Container |
| img *image.Image |
| imgID image.ID |
| err error |
| ) |
| |
| if params.Config.Image != "" { |
| img, err = daemon.GetImage(params.Config.Image) |
| if err != nil { |
| return nil, err |
| } |
| |
| if runtime.GOOS == "solaris" && img.OS != "solaris " { |
| return nil, errors.New("Platform on which parent image was created is not Solaris") |
| } |
| imgID = img.ID() |
| } |
| |
| if err := daemon.mergeAndVerifyConfig(params.Config, img); err != nil { |
| return nil, err |
| } |
| |
| if err := daemon.mergeAndVerifyLogConfig(¶ms.HostConfig.LogConfig); err != nil { |
| return nil, err |
| } |
| |
| if container, err = daemon.newContainer(params.Name, params.Config, params.HostConfig, imgID, managed); err != nil { |
| return nil, err |
| } |
| defer func() { |
| if retErr != nil { |
| if err := daemon.cleanupContainer(container, true, true); err != nil { |
| logrus.Errorf("failed to cleanup container on create error: %v", err) |
| } |
| } |
| }() |
| |
| if err := daemon.setSecurityOptions(container, params.HostConfig); err != nil { |
| return nil, err |
| } |
| |
| container.HostConfig.StorageOpt = params.HostConfig.StorageOpt |
| |
| // Set RWLayer for container after mount labels have been set |
| if err := daemon.setRWLayer(container); err != nil { |
| return nil, err |
| } |
| |
| rootUID, rootGID, err := idtools.GetRootUIDGID(daemon.uidMaps, daemon.gidMaps) |
| if err != nil { |
| return nil, err |
| } |
| if err := idtools.MkdirAs(container.Root, 0700, rootUID, rootGID); err != nil { |
| return nil, err |
| } |
| if err := idtools.MkdirAs(container.CheckpointDir(), 0700, rootUID, rootGID); err != nil { |
| return nil, err |
| } |
| |
| if err := daemon.setHostConfig(container, params.HostConfig); err != nil { |
| return nil, err |
| } |
| |
| if err := daemon.createContainerPlatformSpecificSettings(container, params.Config, params.HostConfig); err != nil { |
| return nil, err |
| } |
| |
| var endpointsConfigs map[string]*networktypes.EndpointSettings |
| if params.NetworkingConfig != nil { |
| endpointsConfigs = params.NetworkingConfig.EndpointsConfig |
| } |
| // Make sure NetworkMode has an acceptable value. We do this to ensure |
| // backwards API compatibility. |
| container.HostConfig = runconfig.SetDefaultNetModeIfBlank(container.HostConfig) |
| |
| daemon.updateContainerNetworkSettings(container, endpointsConfigs) |
| |
| if err := container.ToDisk(); err != nil { |
| logrus.Errorf("Error saving new container to disk: %v", err) |
| return nil, err |
| } |
| if err := daemon.Register(container); err != nil { |
| return nil, err |
| } |
| daemon.LogContainerEvent(container, "create") |
| return container, nil |
| } |
| |
| func (daemon *Daemon) generateSecurityOpt(ipcMode containertypes.IpcMode, pidMode containertypes.PidMode, privileged bool) ([]string, error) { |
| if ipcMode.IsHost() || pidMode.IsHost() || privileged { |
| return label.DisableSecOpt(), nil |
| } |
| |
| var ipcLabel []string |
| var pidLabel []string |
| ipcContainer := ipcMode.Container() |
| pidContainer := pidMode.Container() |
| if ipcContainer != "" { |
| c, err := daemon.GetContainer(ipcContainer) |
| if err != nil { |
| return nil, err |
| } |
| ipcLabel = label.DupSecOpt(c.ProcessLabel) |
| if pidContainer == "" { |
| return ipcLabel, err |
| } |
| } |
| if pidContainer != "" { |
| c, err := daemon.GetContainer(pidContainer) |
| if err != nil { |
| return nil, err |
| } |
| |
| pidLabel = label.DupSecOpt(c.ProcessLabel) |
| if ipcContainer == "" { |
| return pidLabel, err |
| } |
| } |
| |
| if pidLabel != nil && ipcLabel != nil { |
| for i := 0; i < len(pidLabel); i++ { |
| if pidLabel[i] != ipcLabel[i] { |
| return nil, fmt.Errorf("--ipc and --pid containers SELinux labels aren't the same") |
| } |
| } |
| return pidLabel, nil |
| } |
| return nil, nil |
| } |
| |
| func (daemon *Daemon) setRWLayer(container *container.Container) error { |
| var layerID layer.ChainID |
| if container.ImageID != "" { |
| img, err := daemon.imageStore.Get(container.ImageID) |
| if err != nil { |
| return err |
| } |
| layerID = img.RootFS.ChainID() |
| } |
| |
| rwLayer, err := daemon.layerStore.CreateRWLayer(container.ID, layerID, container.MountLabel, daemon.getLayerInit(), container.HostConfig.StorageOpt) |
| |
| if err != nil { |
| return err |
| } |
| container.RWLayer = rwLayer |
| |
| return nil |
| } |
| |
| // VolumeCreate creates a volume with the specified name, driver, and opts |
| // This is called directly from the Engine API |
| func (daemon *Daemon) VolumeCreate(name, driverName string, opts, labels map[string]string) (*types.Volume, error) { |
| if name == "" { |
| name = stringid.GenerateNonCryptoID() |
| } |
| |
| v, err := daemon.volumes.Create(name, driverName, opts, labels) |
| if err != nil { |
| if volumestore.IsNameConflict(err) { |
| return nil, fmt.Errorf("A volume named %s already exists. Choose a different volume name.", name) |
| } |
| return nil, err |
| } |
| |
| daemon.LogVolumeEvent(v.Name(), "create", map[string]string{"driver": v.DriverName()}) |
| apiV := volumeToAPIType(v) |
| apiV.Mountpoint = v.Path() |
| return apiV, nil |
| } |
| |
| func (daemon *Daemon) mergeAndVerifyConfig(config *containertypes.Config, img *image.Image) error { |
| if img != nil && img.Config != nil { |
| if err := merge(config, img.Config); err != nil { |
| return err |
| } |
| } |
| // Reset the Entrypoint if it is [""] |
| if len(config.Entrypoint) == 1 && config.Entrypoint[0] == "" { |
| config.Entrypoint = nil |
| } |
| if len(config.Entrypoint) == 0 && len(config.Cmd) == 0 { |
| return fmt.Errorf("No command specified") |
| } |
| return nil |
| } |
| |
| // Checks if the client set configurations for more than one network while creating a container |
| // Also checks if the IPAMConfig is valid |
| func (daemon *Daemon) verifyNetworkingConfig(nwConfig *networktypes.NetworkingConfig) error { |
| if nwConfig == nil || len(nwConfig.EndpointsConfig) == 0 { |
| return nil |
| } |
| if len(nwConfig.EndpointsConfig) == 1 { |
| for _, v := range nwConfig.EndpointsConfig { |
| if v != nil && v.IPAMConfig != nil { |
| if v.IPAMConfig.IPv4Address != "" && net.ParseIP(v.IPAMConfig.IPv4Address).To4() == nil { |
| return apierrors.NewBadRequestError(fmt.Errorf("invalid IPv4 address: %s", v.IPAMConfig.IPv4Address)) |
| } |
| if v.IPAMConfig.IPv6Address != "" { |
| n := net.ParseIP(v.IPAMConfig.IPv6Address) |
| // if the address is an invalid network address (ParseIP == nil) or if it is |
| // an IPv4 address (To4() != nil), then it is an invalid IPv6 address |
| if n == nil || n.To4() != nil { |
| return apierrors.NewBadRequestError(fmt.Errorf("invalid IPv6 address: %s", v.IPAMConfig.IPv6Address)) |
| } |
| } |
| } |
| } |
| return nil |
| } |
| l := make([]string, 0, len(nwConfig.EndpointsConfig)) |
| for k := range nwConfig.EndpointsConfig { |
| l = append(l, k) |
| } |
| err := fmt.Errorf("Container cannot be connected to network endpoints: %s", strings.Join(l, ", ")) |
| return apierrors.NewBadRequestError(err) |
| } |