Exemplo n.º 1
0
// verifyContainerSettings performs validation of the hostconfig and config
// structures.
func (daemon *Daemon) verifyContainerSettings(hostConfig *runconfig.HostConfig, config *runconfig.Config) ([]string, error) {

	// First perform verification of settings common across all platforms.
	if config != nil {
		if config.WorkingDir != "" && !filepath.IsAbs(config.WorkingDir) {
			return nil, fmt.Errorf("The working directory '%s' is invalid. It needs to be an absolute path.", config.WorkingDir)
		}
	}

	if hostConfig == nil {
		return nil, nil
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return nil, fmt.Errorf("Invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return nil, fmt.Errorf("Invalid port specification: %q", pb.HostPort)
			}
		}
	}

	// Now do platform-specific verification
	return verifyPlatformContainerSettings(daemon, hostConfig, config)
}
Exemplo n.º 2
0
// verifyContainerSettings performs validation of the hostconfig and config
// structures.
func (daemon *Daemon) verifyContainerSettings(ctx context.Context, hostConfig *runconfig.HostConfig, config *runconfig.Config) ([]string, error) {

	// First perform verification of settings common across all platforms.
	if config != nil {
		if config.WorkingDir != "" {
			config.WorkingDir = filepath.FromSlash(config.WorkingDir) // Ensure in platform semantics
			if !system.IsAbs(config.WorkingDir) {
				return nil, fmt.Errorf("The working directory '%s' is invalid. It needs to be an absolute path.", config.WorkingDir)
			}
		}

		if len(config.StopSignal) > 0 {
			_, err := signal.ParseSignal(config.StopSignal)
			if err != nil {
				return nil, err
			}
		}
	}

	if hostConfig == nil {
		return nil, nil
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return nil, fmt.Errorf("Invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return nil, fmt.Errorf("Invalid port specification: %q", pb.HostPort)
			}
		}
	}

	// Now do platform-specific verification
	return verifyPlatformContainerSettings(ctx, daemon, hostConfig, config)
}
Exemplo n.º 3
0
// transformContainer generates the container type expected by the docker ps command.
func (daemon *Daemon) transformContainer(container *Container, ctx *listContext) (*types.Container, error) {
	newC := &types.Container{
		ID:      container.ID,
		Names:   ctx.names[container.ID],
		ImageID: container.ImageID,
	}
	if newC.Names == nil {
		// Dead containers will often have no name, so make sure the response isn't  null
		newC.Names = []string{}
	}

	img, err := daemon.repositories.LookupImage(container.Config.Image)
	if err != nil {
		// If the image can no longer be found by its original reference,
		// it makes sense to show the ID instead of a stale reference.
		newC.Image = container.ImageID
	} else if container.ImageID == img.ID {
		newC.Image = container.Config.Image
	} else {
		newC.Image = container.ImageID
	}

	if len(container.Args) > 0 {
		args := []string{}
		for _, arg := range container.Args {
			if strings.Contains(arg, " ") {
				args = append(args, fmt.Sprintf("'%s'", arg))
			} else {
				args = append(args, arg)
			}
		}
		argsAsString := strings.Join(args, " ")

		newC.Command = fmt.Sprintf("%s %s", container.Path, argsAsString)
	} else {
		newC.Command = container.Path
	}
	newC.Created = container.Created.Unix()
	newC.Status = container.State.String()
	newC.HostConfig.NetworkMode = string(container.hostConfig.NetworkMode)

	newC.Ports = []types.Port{}
	for port, bindings := range container.NetworkSettings.Ports {
		p, err := nat.ParsePort(port.Port())
		if err != nil {
			return nil, err
		}
		if len(bindings) == 0 {
			newC.Ports = append(newC.Ports, types.Port{
				PrivatePort: p,
				Type:        port.Proto(),
			})
			continue
		}
		for _, binding := range bindings {
			h, err := nat.ParsePort(binding.HostPort)
			if err != nil {
				return nil, err
			}
			newC.Ports = append(newC.Ports, types.Port{
				PrivatePort: p,
				PublicPort:  h,
				Type:        port.Proto(),
				IP:          binding.HostIP,
			})
		}
	}

	if ctx.Size {
		sizeRw, sizeRootFs := container.getSize()
		newC.SizeRw = sizeRw
		newC.SizeRootFs = sizeRootFs
	}
	newC.Labels = container.Config.Labels

	return newC, nil
}
Exemplo n.º 4
0
func (daemon *Daemon) verifyContainerSettings(hostConfig *runconfig.HostConfig, config *runconfig.Config) ([]string, error) {
	var warnings []string

	if config != nil {
		// The check for a valid workdir path is made on the server rather than in the
		// client. This is because we don't know the type of path (Linux or Windows)
		// to validate on the client.
		if config.WorkingDir != "" && !filepath.IsAbs(config.WorkingDir) {
			return warnings, fmt.Errorf("The working directory '%s' is invalid. It needs to be an absolute path.", config.WorkingDir)
		}
	}

	if hostConfig == nil {
		return warnings, nil
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return warnings, fmt.Errorf("Invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return warnings, fmt.Errorf("Invalid port specification: %q", pb.HostPort)
			}
		}
	}
	if hostConfig.LxcConf.Len() > 0 && !strings.Contains(daemon.ExecutionDriver().Name(), "lxc") {
		return warnings, fmt.Errorf("Cannot use --lxc-conf with execdriver: %s", daemon.ExecutionDriver().Name())
	}
	if hostConfig.Memory != 0 && hostConfig.Memory < 4194304 {
		return warnings, fmt.Errorf("Minimum memory limit allowed is 4MB")
	}
	if hostConfig.Memory > 0 && !daemon.SystemConfig().MemoryLimit {
		warnings = append(warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
		logrus.Warnf("Your kernel does not support memory limit capabilities. Limitation discarded.")
		hostConfig.Memory = 0
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap != -1 && !daemon.SystemConfig().SwapLimit {
		warnings = append(warnings, "Your kernel does not support swap limit capabilities, memory limited without swap.")
		logrus.Warnf("Your kernel does not support swap limit capabilities, memory limited without swap.")
		hostConfig.MemorySwap = -1
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap > 0 && hostConfig.MemorySwap < hostConfig.Memory {
		return warnings, fmt.Errorf("Minimum memoryswap limit should be larger than memory limit, see usage.")
	}
	if hostConfig.Memory == 0 && hostConfig.MemorySwap > 0 {
		return warnings, fmt.Errorf("You should always set the Memory limit when using Memoryswap limit, see usage.")
	}
	if hostConfig.MemorySwappiness != -1 && !daemon.SystemConfig().MemorySwappiness {
		warnings = append(warnings, "Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
		logrus.Warnf("Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
		hostConfig.MemorySwappiness = -1
	}
	if hostConfig.MemorySwappiness != -1 && (hostConfig.MemorySwappiness < 0 || hostConfig.MemorySwappiness > 100) {
		return warnings, fmt.Errorf("Invalid value: %d, valid memory swappiness range is 0-100.", hostConfig.MemorySwappiness)
	}
	if hostConfig.CpuPeriod > 0 && !daemon.SystemConfig().CpuCfsPeriod {
		warnings = append(warnings, "Your kernel does not support CPU cfs period. Period discarded.")
		logrus.Warnf("Your kernel does not support CPU cfs period. Period discarded.")
		hostConfig.CpuPeriod = 0
	}
	if hostConfig.CpuQuota > 0 && !daemon.SystemConfig().CpuCfsQuota {
		warnings = append(warnings, "Your kernel does not support CPU cfs quota. Quota discarded.")
		logrus.Warnf("Your kernel does not support CPU cfs quota. Quota discarded.")
		hostConfig.CpuQuota = 0
	}
	if hostConfig.BlkioWeight > 0 && (hostConfig.BlkioWeight < 10 || hostConfig.BlkioWeight > 1000) {
		return warnings, fmt.Errorf("Range of blkio weight is from 10 to 1000.")
	}
	if hostConfig.OomKillDisable && !daemon.SystemConfig().OomKillDisable {
		hostConfig.OomKillDisable = false
		return warnings, fmt.Errorf("Your kernel does not support oom kill disable.")
	}
	if daemon.SystemConfig().IPv4ForwardingDisabled {
		warnings = append(warnings, "IPv4 forwarding is disabled. Networking will not work.")
		logrus.Warnf("IPv4 forwarding is disabled. Networking will not work")
	}
	return warnings, nil
}
Exemplo n.º 5
0
// transformContainer generates the container type expected by the docker ps command.
func (daemon *Daemon) transformContainer(container *container.Container, ctx *listContext) (*types.Container, error) {
	newC := &types.Container{
		ID:      container.ID,
		Names:   ctx.names[container.ID],
		ImageID: container.ImageID.String(),
	}
	if newC.Names == nil {
		// Dead containers will often have no name, so make sure the response isn't  null
		newC.Names = []string{}
	}

	image := container.Config.Image // if possible keep the original ref
	if image != container.ImageID.String() {
		id, err := daemon.GetImageID(image)
		if _, isDNE := err.(ErrImageDoesNotExist); err != nil && !isDNE {
			return nil, err
		}
		if err != nil || id != container.ImageID {
			image = container.ImageID.String()
		}
	}
	newC.Image = image

	if len(container.Args) > 0 {
		args := []string{}
		for _, arg := range container.Args {
			if strings.Contains(arg, " ") {
				args = append(args, fmt.Sprintf("'%s'", arg))
			} else {
				args = append(args, arg)
			}
		}
		argsAsString := strings.Join(args, " ")

		newC.Command = fmt.Sprintf("%s %s", container.Path, argsAsString)
	} else {
		newC.Command = container.Path
	}
	newC.Created = container.Created.Unix()
	newC.Status = container.State.String()
	newC.HostConfig.NetworkMode = string(container.HostConfig.NetworkMode)

	newC.Ports = []types.Port{}
	for port, bindings := range container.NetworkSettings.Ports {
		p, err := nat.ParsePort(port.Port())
		if err != nil {
			return nil, err
		}
		if len(bindings) == 0 {
			newC.Ports = append(newC.Ports, types.Port{
				PrivatePort: p,
				Type:        port.Proto(),
			})
			continue
		}
		for _, binding := range bindings {
			h, err := nat.ParsePort(binding.HostPort)
			if err != nil {
				return nil, err
			}
			newC.Ports = append(newC.Ports, types.Port{
				PrivatePort: p,
				PublicPort:  h,
				Type:        port.Proto(),
				IP:          binding.HostIP,
			})
		}
	}

	if ctx.Size {
		sizeRw, sizeRootFs := daemon.getSize(container)
		newC.SizeRw = sizeRw
		newC.SizeRootFs = sizeRootFs
	}
	newC.Labels = container.Config.Labels

	return newC, nil
}
Exemplo n.º 6
0
func (daemon *Daemon) Containers(config *ContainersConfig) ([]*types.Container, error) {
	var (
		foundBefore bool
		displayed   int
		all         = config.All
		n           = config.Limit
		psFilters   filters.Args
		filtExited  []int
	)
	containers := []*types.Container{}

	psFilters, err := filters.FromParam(config.Filters)
	if err != nil {
		return nil, err
	}
	if i, ok := psFilters["exited"]; ok {
		for _, value := range i {
			code, err := strconv.Atoi(value)
			if err != nil {
				return nil, err
			}
			filtExited = append(filtExited, code)
		}
	}

	if i, ok := psFilters["status"]; ok {
		for _, value := range i {
			if !isValidStateString(value) {
				return nil, errors.New("Unrecognised filter value for status")
			}
			if value == "exited" || value == "created" {
				all = true
			}
		}
	}
	names := map[string][]string{}
	daemon.ContainerGraph().Walk("/", func(p string, e *graphdb.Entity) error {
		names[e.ID()] = append(names[e.ID()], p)
		return nil
	}, 1)

	var beforeCont, sinceCont *Container
	if config.Before != "" {
		beforeCont, err = daemon.Get(config.Before)
		if err != nil {
			return nil, err
		}
	}

	if config.Since != "" {
		sinceCont, err = daemon.Get(config.Since)
		if err != nil {
			return nil, err
		}
	}

	errLast := errors.New("last container")
	writeCont := func(container *Container) error {
		container.Lock()
		defer container.Unlock()
		if !container.Running && !all && n <= 0 && config.Since == "" && config.Before == "" {
			return nil
		}
		if !psFilters.Match("name", container.Name) {
			return nil
		}

		if !psFilters.Match("id", container.ID) {
			return nil
		}

		if !psFilters.MatchKVList("label", container.Config.Labels) {
			return nil
		}

		if config.Before != "" && !foundBefore {
			if container.ID == beforeCont.ID {
				foundBefore = true
			}
			return nil
		}
		if n > 0 && displayed == n {
			return errLast
		}
		if config.Since != "" {
			if container.ID == sinceCont.ID {
				return errLast
			}
		}
		if len(filtExited) > 0 {
			shouldSkip := true
			for _, code := range filtExited {
				if code == container.ExitCode && !container.Running {
					shouldSkip = false
					break
				}
			}
			if shouldSkip {
				return nil
			}
		}

		if !psFilters.Match("status", container.State.StateString()) {
			return nil
		}
		displayed++
		newC := &types.Container{
			ID:    container.ID,
			Names: names[container.ID],
		}
		newC.Image = container.Config.Image
		if len(container.Args) > 0 {
			args := []string{}
			for _, arg := range container.Args {
				if strings.Contains(arg, " ") {
					args = append(args, fmt.Sprintf("'%s'", arg))
				} else {
					args = append(args, arg)
				}
			}
			argsAsString := strings.Join(args, " ")

			newC.Command = fmt.Sprintf("%s %s", container.Path, argsAsString)
		} else {
			newC.Command = fmt.Sprintf("%s", container.Path)
		}
		newC.Created = int(container.Created.Unix())
		newC.Status = container.State.String()
		newC.HostConfig.NetworkMode = string(container.HostConfig().NetworkMode)

		newC.Ports = []types.Port{}
		for port, bindings := range container.NetworkSettings.Ports {
			p, _ := nat.ParsePort(port.Port())
			if len(bindings) == 0 {
				newC.Ports = append(newC.Ports, types.Port{
					PrivatePort: p,
					Type:        port.Proto(),
				})
				continue
			}
			for _, binding := range bindings {
				h, _ := nat.ParsePort(binding.HostPort)
				newC.Ports = append(newC.Ports, types.Port{
					PrivatePort: p,
					PublicPort:  h,
					Type:        port.Proto(),
					IP:          binding.HostIp,
				})
			}
		}

		if config.Size {
			sizeRw, sizeRootFs := container.GetSize()
			newC.SizeRw = int(sizeRw)
			newC.SizeRootFs = int(sizeRootFs)
		}
		newC.Labels = container.Config.Labels
		containers = append(containers, newC)
		return nil
	}

	for _, container := range daemon.List() {
		if err := writeCont(container); err != nil {
			if err != errLast {
				return nil, err
			}
			break
		}
	}
	return containers, nil
}
Exemplo n.º 7
0
Arquivo: list.go Projeto: ranid/docker
// Containers returns a list of all the containers.
func (daemon *Daemon) Containers(config *ContainersConfig) ([]*types.Container, error) {
	var (
		foundBefore    bool
		displayed      int
		ancestorFilter bool
		all            = config.All
		n              = config.Limit
		psFilters      filters.Args
		filtExited     []int
	)
	imagesFilter := map[string]bool{}
	containers := []*types.Container{}

	psFilters, err := filters.FromParam(config.Filters)
	if err != nil {
		return nil, err
	}
	if i, ok := psFilters["exited"]; ok {
		for _, value := range i {
			code, err := strconv.Atoi(value)
			if err != nil {
				return nil, err
			}
			filtExited = append(filtExited, code)
		}
	}

	if i, ok := psFilters["status"]; ok {
		for _, value := range i {
			if !isValidStateString(value) {
				return nil, errors.New("Unrecognised filter value for status")
			}
			if value == "exited" || value == "created" {
				all = true
			}
		}
	}

	if ancestors, ok := psFilters["ancestor"]; ok {
		ancestorFilter = true
		byParents := daemon.Graph().ByParent()
		// The idea is to walk the graph down the most "efficient" way.
		for _, ancestor := range ancestors {
			// First, get the imageId of the ancestor filter (yay)
			image, err := daemon.Repositories().LookupImage(ancestor)
			if err != nil {
				logrus.Warnf("Error while looking up for image %v", ancestor)
				continue
			}
			if imagesFilter[ancestor] {
				// Already seen this ancestor, skip it
				continue
			}
			// Then walk down the graph and put the imageIds in imagesFilter
			populateImageFilterByParents(imagesFilter, image.ID, byParents)
		}
	}

	names := map[string][]string{}
	daemon.containerGraph().Walk("/", func(p string, e *graphdb.Entity) error {
		names[e.ID()] = append(names[e.ID()], p)
		return nil
	}, 1)

	var beforeCont, sinceCont *Container
	if config.Before != "" {
		beforeCont, err = daemon.Get(config.Before)
		if err != nil {
			return nil, err
		}
	}

	if config.Since != "" {
		sinceCont, err = daemon.Get(config.Since)
		if err != nil {
			return nil, err
		}
	}

	errLast := errors.New("last container")
	writeCont := func(container *Container) error {
		container.Lock()
		defer container.Unlock()
		if !container.Running && !all && n <= 0 && config.Since == "" && config.Before == "" {
			return nil
		}
		if !psFilters.Match("name", container.Name) {
			return nil
		}

		if !psFilters.Match("id", container.ID) {
			return nil
		}

		if !psFilters.MatchKVList("label", container.Config.Labels) {
			return nil
		}

		if config.Before != "" && !foundBefore {
			if container.ID == beforeCont.ID {
				foundBefore = true
			}
			return nil
		}
		if n > 0 && displayed == n {
			return errLast
		}
		if config.Since != "" {
			if container.ID == sinceCont.ID {
				return errLast
			}
		}
		if len(filtExited) > 0 {
			shouldSkip := true
			for _, code := range filtExited {
				if code == container.ExitCode && !container.Running {
					shouldSkip = false
					break
				}
			}
			if shouldSkip {
				return nil
			}
		}

		if !psFilters.Match("status", container.State.StateString()) {
			return nil
		}

		if ancestorFilter {
			if len(imagesFilter) == 0 {
				return nil
			}
			if !imagesFilter[container.ImageID] {
				return nil
			}
		}

		displayed++
		newC := &types.Container{
			ID:    container.ID,
			Names: names[container.ID],
		}

		img, err := daemon.Repositories().LookupImage(container.Config.Image)
		if err != nil {
			// If the image can no longer be found by its original reference,
			// it makes sense to show the ID instead of a stale reference.
			newC.Image = container.ImageID
		} else if container.ImageID == img.ID {
			newC.Image = container.Config.Image
		} else {
			newC.Image = container.ImageID
		}

		if len(container.Args) > 0 {
			args := []string{}
			for _, arg := range container.Args {
				if strings.Contains(arg, " ") {
					args = append(args, fmt.Sprintf("'%s'", arg))
				} else {
					args = append(args, arg)
				}
			}
			argsAsString := strings.Join(args, " ")

			newC.Command = fmt.Sprintf("%s %s", container.Path, argsAsString)
		} else {
			newC.Command = fmt.Sprintf("%s", container.Path)
		}
		newC.Created = container.Created.Unix()
		newC.Status = container.State.String()
		newC.HostConfig.NetworkMode = string(container.hostConfig.NetworkMode)

		newC.Ports = []types.Port{}
		for port, bindings := range container.NetworkSettings.Ports {
			p, err := nat.ParsePort(port.Port())
			if err != nil {
				return err
			}
			if len(bindings) == 0 {
				newC.Ports = append(newC.Ports, types.Port{
					PrivatePort: p,
					Type:        port.Proto(),
				})
				continue
			}
			for _, binding := range bindings {
				h, err := nat.ParsePort(binding.HostPort)
				if err != nil {
					return err
				}
				newC.Ports = append(newC.Ports, types.Port{
					PrivatePort: p,
					PublicPort:  h,
					Type:        port.Proto(),
					IP:          binding.HostIP,
				})
			}
		}

		if config.Size {
			sizeRw, sizeRootFs := container.getSize()
			newC.SizeRw = sizeRw
			newC.SizeRootFs = sizeRootFs
		}
		newC.Labels = container.Config.Labels
		containers = append(containers, newC)
		return nil
	}

	for _, container := range daemon.List() {
		if err := writeCont(container); err != nil {
			if err != errLast {
				return nil, err
			}
			break
		}
	}
	return containers, nil
}