package daemon import ( "github.com/Sirupsen/logrus" "github.com/docker/docker/container" derr "github.com/docker/docker/errors" "github.com/docker/docker/image" "github.com/docker/docker/layer" "github.com/docker/docker/pkg/idtools" "github.com/docker/docker/pkg/stringid" volumestore "github.com/docker/docker/volume/store" "github.com/docker/engine-api/types" containertypes "github.com/docker/engine-api/types/container" networktypes "github.com/docker/engine-api/types/network" "github.com/opencontainers/runc/libcontainer/label" ) // ContainerCreate creates a container. func (daemon *Daemon) ContainerCreate(params types.ContainerCreateConfig) (types.ContainerCreateResponse, error) { if params.Config == nil { return types.ContainerCreateResponse{}, derr.ErrorCodeEmptyConfig } warnings, err := daemon.verifyContainerSettings(params.HostConfig, params.Config) if err != nil { return types.ContainerCreateResponse{Warnings: warnings}, err } err = daemon.verifyNetworkingConfig(params.NetworkingConfig) if err != nil { return types.ContainerCreateResponse{}, err } if params.HostConfig == nil { params.HostConfig = &containertypes.HostConfig{} } err = daemon.adaptContainerSettings(params.HostConfig, params.AdjustCPUShares) if err != nil { return types.ContainerCreateResponse{Warnings: warnings}, err } container, err := daemon.create(params) if err != nil { return types.ContainerCreateResponse{Warnings: warnings}, daemon.imageNotExistToErrcode(err) } return types.ContainerCreateResponse{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) (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 } imgID = img.ID() } if err := daemon.mergeAndVerifyConfig(params.Config, img); err != nil { return nil, err } if container, err = daemon.newContainer(params.Name, params.Config, imgID); err != nil { return nil, err } defer func() { if retErr != nil { if err := daemon.ContainerRm(container.ID, &types.ContainerRmConfig{ForceRemove: true}); err != nil { logrus.Errorf("Clean up Error! Cannot destroy container %s: %v", container.ID, err) } } }() if err := daemon.setSecurityOptions(container, params.HostConfig); err != nil { return nil, err } // Set RWLayer for container after mount labels have been set if err := daemon.setRWLayer(container); err != nil { return nil, err } if err := daemon.Register(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 := daemon.setHostConfig(container, params.HostConfig); err != nil { return nil, err } defer func() { if retErr != nil { if err := daemon.removeMountPoints(container, true); err != nil { logrus.Error(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 } if err := daemon.updateContainerNetworkSettings(container, endpointsConfigs); err != nil { return nil, err } if err := container.ToDiskLocking(); err != nil { logrus.Errorf("Error saving new container to disk: %v", err) return nil, err } daemon.LogContainerEvent(container, "create") return container, nil } func (daemon *Daemon) generateSecurityOpt(ipcMode containertypes.IpcMode, pidMode containertypes.PidMode) ([]string, error) { if ipcMode.IsHost() || pidMode.IsHost() { return label.DisableSecOpt(), nil } if ipcContainer := ipcMode.Container(); ipcContainer != "" { c, err := daemon.GetContainer(ipcContainer) if err != nil { return nil, err } return label.DupSecOpt(c.ProcessLabel), 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.setupInitLayer) 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 remote API func (daemon *Daemon) VolumeCreate(name, driverName string, opts map[string]string) (*types.Volume, error) { if name == "" { name = stringid.GenerateNonCryptoID() } v, err := daemon.volumes.Create(name, driverName, opts) if err != nil { if volumestore.IsNameConflict(err) { return nil, derr.ErrorVolumeNameTaken.WithArgs(name) } return nil, err } daemon.LogVolumeEvent(v.Name(), "create", map[string]string{"driver": v.DriverName()}) return volumeToAPIType(v), nil }