Exemple #1
0
func ParseLimit(typ Type, s string) (int64, error) {
	switch typ {
	case TypeMemory:
		return units.RAMInBytes(s)
	default:
		return units.FromHumanSize(s)
	}
}
Exemple #2
0
func Parse(cmd *flag.FlagSet, args []string) (*Config, *HostConfig, *flag.FlagSet, error) {
	var (
		// FIXME: use utils.ListOpts for attach and volumes?
		flAttach  = opts.NewListOpts(opts.ValidateAttach)
		flVolumes = opts.NewListOpts(opts.ValidatePath)
		flLinks   = opts.NewListOpts(opts.ValidateLink)
		flEnv     = opts.NewListOpts(opts.ValidateEnv)
		flLabels  = opts.NewListOpts(opts.ValidateEnv)
		flDevices = opts.NewListOpts(opts.ValidatePath)

		ulimits   = make(map[string]*ulimit.Ulimit)
		flUlimits = opts.NewUlimitOpt(ulimits)

		flPublish     = opts.NewListOpts(nil)
		flExpose      = opts.NewListOpts(nil)
		flDns         = opts.NewListOpts(opts.ValidateIPAddress)
		flDnsSearch   = opts.NewListOpts(opts.ValidateDnsSearch)
		flExtraHosts  = opts.NewListOpts(opts.ValidateExtraHost)
		flVolumesFrom = opts.NewListOpts(nil)
		flLxcOpts     = opts.NewListOpts(nil)
		flEnvFile     = opts.NewListOpts(nil)
		flCapAdd      = opts.NewListOpts(nil)
		flCapDrop     = opts.NewListOpts(nil)
		flSecurityOpt = opts.NewListOpts(nil)
		flLabelsFile  = opts.NewListOpts(nil)

		flNetwork         = cmd.Bool([]string{"#n", "#-networking"}, true, "Enable networking for this container")
		flPrivileged      = cmd.Bool([]string{"#privileged", "-privileged"}, false, "Give extended privileges to this container")
		flPidMode         = cmd.String([]string{"-pid"}, "", "PID namespace to use")
		flPublishAll      = cmd.Bool([]string{"P", "-publish-all"}, false, "Publish all exposed ports to random ports")
		flStdin           = cmd.Bool([]string{"i", "-interactive"}, false, "Keep STDIN open even if not attached")
		flTty             = cmd.Bool([]string{"t", "-tty"}, false, "Allocate a pseudo-TTY")
		flContainerIDFile = cmd.String([]string{"#cidfile", "-cidfile"}, "", "Write the container ID to the file")
		flEntrypoint      = cmd.String([]string{"#entrypoint", "-entrypoint"}, "", "Overwrite the default ENTRYPOINT of the image")
		flHostname        = cmd.String([]string{"h", "-hostname"}, "", "Container host name")
		flMemoryString    = cmd.String([]string{"m", "-memory"}, "", "Memory limit")
		flMemorySwap      = cmd.String([]string{"-memory-swap"}, "", "Total memory (memory + swap), '-1' to disable swap")
		flUser            = cmd.String([]string{"u", "-user"}, "", "Username or UID (format: <name|uid>[:<group|gid>])")
		flWorkingDir      = cmd.String([]string{"w", "-workdir"}, "", "Working directory inside the container")
		flCpuShares       = cmd.Int64([]string{"c", "-cpu-shares"}, 0, "CPU shares (relative weight)")
		flCpusetCpus      = cmd.String([]string{"#-cpuset", "-cpuset-cpus"}, "", "CPUs in which to allow execution (0-3, 0,1)")
		flNetMode         = cmd.String([]string{"-net"}, "bridge", "Set the Network mode for the container")
		flMacAddress      = cmd.String([]string{"-mac-address"}, "", "Container MAC address (e.g. 92:d0:c6:0a:29:33)")
		flIpcMode         = cmd.String([]string{"-ipc"}, "", "IPC namespace to use")
		flRestartPolicy   = cmd.String([]string{"-restart"}, "no", "Restart policy to apply when a container exits")
		flReadonlyRootfs  = cmd.Bool([]string{"-read-only"}, false, "Mount the container's root filesystem as read only")
		flLoggingDriver   = cmd.String([]string{"-log-driver"}, "", "Logging driver for container")
		flCgroupParent    = cmd.String([]string{"-cgroup-parent"}, "", "Optional parent cgroup for the container")
	)

	cmd.Var(&flAttach, []string{"a", "-attach"}, "Attach to STDIN, STDOUT or STDERR")
	cmd.Var(&flVolumes, []string{"v", "-volume"}, "Bind mount a volume")
	cmd.Var(&flLinks, []string{"#link", "-link"}, "Add link to another container")
	cmd.Var(&flDevices, []string{"-device"}, "Add a host device to the container")
	cmd.Var(&flLabels, []string{"l", "-label"}, "Set meta data on a container")
	cmd.Var(&flLabelsFile, []string{"-label-file"}, "Read in a line delimited file of labels")
	cmd.Var(&flEnv, []string{"e", "-env"}, "Set environment variables")
	cmd.Var(&flEnvFile, []string{"-env-file"}, "Read in a file of environment variables")
	cmd.Var(&flPublish, []string{"p", "-publish"}, "Publish a container's port(s) to the host")
	cmd.Var(&flExpose, []string{"#expose", "-expose"}, "Expose a port or a range of ports")
	cmd.Var(&flDns, []string{"#dns", "-dns"}, "Set custom DNS servers")
	cmd.Var(&flDnsSearch, []string{"-dns-search"}, "Set custom DNS search domains")
	cmd.Var(&flExtraHosts, []string{"-add-host"}, "Add a custom host-to-IP mapping (host:ip)")
	cmd.Var(&flVolumesFrom, []string{"#volumes-from", "-volumes-from"}, "Mount volumes from the specified container(s)")
	cmd.Var(&flLxcOpts, []string{"#lxc-conf", "-lxc-conf"}, "Add custom lxc options")
	cmd.Var(&flCapAdd, []string{"-cap-add"}, "Add Linux capabilities")
	cmd.Var(&flCapDrop, []string{"-cap-drop"}, "Drop Linux capabilities")
	cmd.Var(&flSecurityOpt, []string{"-security-opt"}, "Security Options")
	cmd.Var(flUlimits, []string{"-ulimit"}, "Ulimit options")

	cmd.Require(flag.Min, 1)

	if err := utils.ParseFlags(cmd, args, true); err != nil {
		return nil, nil, cmd, err
	}

	// Validate input params
	if *flWorkingDir != "" && !path.IsAbs(*flWorkingDir) {
		return nil, nil, cmd, ErrInvalidWorkingDirectory
	}

	// Validate the input mac address
	if *flMacAddress != "" {
		if _, err := opts.ValidateMACAddress(*flMacAddress); err != nil {
			return nil, nil, cmd, fmt.Errorf("%s is not a valid mac address", *flMacAddress)
		}
	}
	var (
		attachStdin  = flAttach.Get("stdin")
		attachStdout = flAttach.Get("stdout")
		attachStderr = flAttach.Get("stderr")
	)

	if *flNetMode != "bridge" && *flNetMode != "none" && *flHostname != "" {
		return nil, nil, cmd, ErrConflictNetworkHostname
	}

	if *flNetMode == "host" && flLinks.Len() > 0 {
		return nil, nil, cmd, ErrConflictHostNetworkAndLinks
	}

	if *flNetMode == "container" && flLinks.Len() > 0 {
		return nil, nil, cmd, ErrConflictContainerNetworkAndLinks
	}

	if *flNetMode == "host" && flDns.Len() > 0 {
		return nil, nil, cmd, ErrConflictHostNetworkAndDns
	}

	if *flNetMode == "container" && flDns.Len() > 0 {
		return nil, nil, cmd, ErrConflictContainerNetworkAndDns
	}

	// If neither -d or -a are set, attach to everything by default
	if flAttach.Len() == 0 {
		attachStdout = true
		attachStderr = true
		if *flStdin {
			attachStdin = true
		}
	}

	var flMemory int64
	if *flMemoryString != "" {
		parsedMemory, err := units.RAMInBytes(*flMemoryString)
		if err != nil {
			return nil, nil, cmd, err
		}
		flMemory = parsedMemory
	}

	var MemorySwap int64
	if *flMemorySwap != "" {
		if *flMemorySwap == "-1" {
			MemorySwap = -1
		} else {
			parsedMemorySwap, err := units.RAMInBytes(*flMemorySwap)
			if err != nil {
				return nil, nil, cmd, err
			}
			MemorySwap = parsedMemorySwap
		}
	}

	var binds []string
	// add any bind targets to the list of container volumes
	for bind := range flVolumes.GetMap() {
		if arr := strings.Split(bind, ":"); len(arr) > 1 {
			if arr[1] == "/" {
				return nil, nil, cmd, fmt.Errorf("Invalid bind mount: destination can't be '/'")
			}
			// after creating the bind mount we want to delete it from the flVolumes values because
			// we do not want bind mounts being committed to image configs
			binds = append(binds, bind)
			flVolumes.Delete(bind)
		} else if bind == "/" {
			return nil, nil, cmd, fmt.Errorf("Invalid volume: path can't be '/'")
		}
	}

	var (
		parsedArgs = cmd.Args()
		runCmd     []string
		entrypoint []string
		image      = cmd.Arg(0)
	)
	if len(parsedArgs) > 1 {
		runCmd = parsedArgs[1:]
	}
	if *flEntrypoint != "" {
		entrypoint = []string{*flEntrypoint}
	}

	lxcConf, err := parseKeyValueOpts(flLxcOpts)
	if err != nil {
		return nil, nil, cmd, err
	}

	var (
		domainname string
		hostname   = *flHostname
		parts      = strings.SplitN(hostname, ".", 2)
	)
	if len(parts) > 1 {
		hostname = parts[0]
		domainname = parts[1]
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, cmd, fmt.Errorf("Invalid port format for --expose: %s", e)
		}
		//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
		proto, port := nat.SplitProtoPort(e)
		//parse the start and end port and create a sequence of ports to expose
		//if expose a port, the start and end port are the same
		start, end, err := parsers.ParsePortRange(port)
		if err != nil {
			return nil, nil, cmd, fmt.Errorf("Invalid range format for --expose: %s, error: %s", e, err)
		}
		for i := start; i <= end; i++ {
			p := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if _, exists := ports[p]; !exists {
				ports[p] = struct{}{}
			}
		}
	}

	// parse device mappings
	deviceMappings := []DeviceMapping{}
	for _, device := range flDevices.GetAll() {
		deviceMapping, err := ParseDevice(device)
		if err != nil {
			return nil, nil, cmd, err
		}
		deviceMappings = append(deviceMappings, deviceMapping)
	}

	// collect all the environment variables for the container
	envVariables, err := readKVStrings(flEnvFile.GetAll(), flEnv.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// collect all the labels for the container
	labels, err := readKVStrings(flLabelsFile.GetAll(), flLabels.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	ipcMode := IpcMode(*flIpcMode)
	if !ipcMode.Valid() {
		return nil, nil, cmd, fmt.Errorf("--ipc: invalid IPC mode")
	}

	pidMode := PidMode(*flPidMode)
	if !pidMode.Valid() {
		return nil, nil, cmd, fmt.Errorf("--pid: invalid PID mode")
	}

	netMode, err := parseNetMode(*flNetMode)
	if err != nil {
		return nil, nil, cmd, fmt.Errorf("--net: invalid net mode: %v", err)
	}

	restartPolicy, err := parseRestartPolicy(*flRestartPolicy)
	if err != nil {
		return nil, nil, cmd, err
	}

	config := &Config{
		Hostname:        hostname,
		Domainname:      domainname,
		PortSpecs:       nil, // Deprecated
		ExposedPorts:    ports,
		User:            *flUser,
		Tty:             *flTty,
		NetworkDisabled: !*flNetwork,
		OpenStdin:       *flStdin,
		Memory:          flMemory,      // FIXME: for backward compatibility
		MemorySwap:      MemorySwap,    // FIXME: for backward compatibility
		CpuShares:       *flCpuShares,  // FIXME: for backward compatibility
		Cpuset:          *flCpusetCpus, // FIXME: for backward compatibility
		AttachStdin:     attachStdin,
		AttachStdout:    attachStdout,
		AttachStderr:    attachStderr,
		Env:             envVariables,
		Cmd:             runCmd,
		Image:           image,
		Volumes:         flVolumes.GetMap(),
		MacAddress:      *flMacAddress,
		Entrypoint:      entrypoint,
		WorkingDir:      *flWorkingDir,
		Labels:          convertKVStringsToMap(labels),
	}

	hostConfig := &HostConfig{
		Binds:           binds,
		ContainerIDFile: *flContainerIDFile,
		LxcConf:         lxcConf,
		Memory:          flMemory,
		MemorySwap:      MemorySwap,
		CpuShares:       *flCpuShares,
		CpusetCpus:      *flCpusetCpus,
		Privileged:      *flPrivileged,
		PortBindings:    portBindings,
		Links:           flLinks.GetAll(),
		PublishAllPorts: *flPublishAll,
		Dns:             flDns.GetAll(),
		DnsSearch:       flDnsSearch.GetAll(),
		ExtraHosts:      flExtraHosts.GetAll(),
		VolumesFrom:     flVolumesFrom.GetAll(),
		NetworkMode:     netMode,
		IpcMode:         ipcMode,
		PidMode:         pidMode,
		Devices:         deviceMappings,
		CapAdd:          flCapAdd.GetAll(),
		CapDrop:         flCapDrop.GetAll(),
		RestartPolicy:   restartPolicy,
		SecurityOpt:     flSecurityOpt.GetAll(),
		ReadonlyRootfs:  *flReadonlyRootfs,
		Ulimits:         flUlimits.GetList(),
		LogConfig:       LogConfig{Type: *flLoggingDriver},
		CgroupParent:    *flCgroupParent,
	}

	// When allocating stdin in attached mode, close stdin at client disconnect
	if config.OpenStdin && config.AttachStdin {
		config.StdinOnce = true
	}
	return config, hostConfig, cmd, nil
}
Exemple #3
0
func (cli *DockerCli) CmdBuild(args ...string) error {
	cmd := cli.Subcmd("build", "PATH | URL | -", "Build a new image from the source code at PATH", true)
	tag := cmd.String([]string{"t", "-tag"}, "", "Repository name (and optionally a tag) for the image")
	suppressOutput := cmd.Bool([]string{"q", "-quiet"}, false, "Suppress the verbose output generated by the containers")
	noCache := cmd.Bool([]string{"#no-cache", "-no-cache"}, false, "Do not use cache when building the image")
	rm := cmd.Bool([]string{"#rm", "-rm"}, true, "Remove intermediate containers after a successful build")
	forceRm := cmd.Bool([]string{"-force-rm"}, false, "Always remove intermediate containers")
	pull := cmd.Bool([]string{"-pull"}, false, "Always attempt to pull a newer version of the image")
	dockerfileName := cmd.String([]string{"f", "-file"}, "", "Name of the Dockerfile (Default is 'PATH/Dockerfile')")
	flMemoryString := cmd.String([]string{"m", "-memory"}, "", "Memory limit")
	flMemorySwap := cmd.String([]string{"-memory-swap"}, "", "Total memory (memory + swap), '-1' to disable swap")
	flCpuShares := cmd.Int64([]string{"c", "-cpu-shares"}, 0, "CPU shares (relative weight)")
	flCpuSetCpus := cmd.String([]string{"-cpuset-cpus"}, "", "CPUs in which to allow execution (0-3, 0,1)")

	cmd.Require(flag.Exact, 1)

	utils.ParseFlags(cmd, args, true)

	var (
		context  archive.Archive
		isRemote bool
		err      error
	)

	_, err = exec.LookPath("git")
	hasGit := err == nil
	if cmd.Arg(0) == "-" {
		// As a special case, 'docker build -' will build from either an empty context with the
		// contents of stdin as a Dockerfile, or a tar-ed context from stdin.
		buf := bufio.NewReader(cli.in)
		magic, err := buf.Peek(tarHeaderSize)
		if err != nil && err != io.EOF {
			return fmt.Errorf("failed to peek context header from STDIN: %v", err)
		}
		if !archive.IsArchive(magic) {
			dockerfile, err := ioutil.ReadAll(buf)
			if err != nil {
				return fmt.Errorf("failed to read Dockerfile from STDIN: %v", err)
			}

			// -f option has no meaning when we're reading it from stdin,
			// so just use our default Dockerfile name
			*dockerfileName = api.DefaultDockerfileName
			context, err = archive.Generate(*dockerfileName, string(dockerfile))
		} else {
			context = ioutil.NopCloser(buf)
		}
	} else if urlutil.IsURL(cmd.Arg(0)) && (!urlutil.IsGitURL(cmd.Arg(0)) || !hasGit) {
		isRemote = true
	} else {
		root := cmd.Arg(0)
		if urlutil.IsGitURL(root) {
			remoteURL := cmd.Arg(0)
			if !urlutil.IsGitTransport(remoteURL) {
				remoteURL = "https://" + remoteURL
			}

			root, err = ioutil.TempDir("", "docker-build-git")
			if err != nil {
				return err
			}
			defer os.RemoveAll(root)

			if output, err := exec.Command("git", "clone", "--recursive", remoteURL, root).CombinedOutput(); err != nil {
				return fmt.Errorf("Error trying to use git: %s (%s)", err, output)
			}
		}
		if _, err := os.Stat(root); err != nil {
			return err
		}

		absRoot, err := filepath.Abs(root)
		if err != nil {
			return err
		}

		filename := *dockerfileName // path to Dockerfile

		if *dockerfileName == "" {
			// No -f/--file was specified so use the default
			*dockerfileName = api.DefaultDockerfileName
			filename = filepath.Join(absRoot, *dockerfileName)

			// Just to be nice ;-) look for 'dockerfile' too but only
			// use it if we found it, otherwise ignore this check
			if _, err = os.Lstat(filename); os.IsNotExist(err) {
				tmpFN := path.Join(absRoot, strings.ToLower(*dockerfileName))
				if _, err = os.Lstat(tmpFN); err == nil {
					*dockerfileName = strings.ToLower(*dockerfileName)
					filename = tmpFN
				}
			}
		}

		origDockerfile := *dockerfileName // used for error msg
		if filename, err = filepath.Abs(filename); err != nil {
			return err
		}

		// Verify that 'filename' is within the build context
		filename, err = symlink.FollowSymlinkInScope(filename, absRoot)
		if err != nil {
			return fmt.Errorf("The Dockerfile (%s) must be within the build context (%s)", origDockerfile, root)
		}

		// Now reset the dockerfileName to be relative to the build context
		*dockerfileName, err = filepath.Rel(absRoot, filename)
		if err != nil {
			return err
		}
		// And canonicalize dockerfile name to a platform-independent one
		*dockerfileName, err = archive.CanonicalTarNameForPath(*dockerfileName)
		if err != nil {
			return fmt.Errorf("Cannot canonicalize dockerfile path %s: %v", dockerfileName, err)
		}

		if _, err = os.Lstat(filename); os.IsNotExist(err) {
			return fmt.Errorf("Cannot locate Dockerfile: %s", origDockerfile)
		}
		var includes = []string{"."}

		excludes, err := utils.ReadDockerIgnore(path.Join(root, ".dockerignore"))
		if err != nil {
			return err
		}

		// If .dockerignore mentions .dockerignore or the Dockerfile
		// then make sure we send both files over to the daemon
		// because Dockerfile is, obviously, needed no matter what, and
		// .dockerignore is needed to know if either one needs to be
		// removed.  The deamon will remove them for us, if needed, after it
		// parses the Dockerfile.
		keepThem1, _ := fileutils.Matches(".dockerignore", excludes)
		keepThem2, _ := fileutils.Matches(*dockerfileName, excludes)
		if keepThem1 || keepThem2 {
			includes = append(includes, ".dockerignore", *dockerfileName)
		}

		if err = utils.ValidateContextDirectory(root, excludes); err != nil {
			return fmt.Errorf("Error checking context is accessible: '%s'. Please check permissions and try again.", err)
		}
		options := &archive.TarOptions{
			Compression:     archive.Uncompressed,
			ExcludePatterns: excludes,
			IncludeFiles:    includes,
		}
		context, err = archive.TarWithOptions(root, options)
		if err != nil {
			return err
		}
	}

	// windows: show error message about modified file permissions
	// FIXME: this is not a valid warning when the daemon is running windows. should be removed once docker engine for windows can build.
	if runtime.GOOS == "windows" {
		log.Warn(`SECURITY WARNING: You are building a Docker image from Windows against a Linux 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.`)
	}

	var body io.Reader
	// Setup an upload progress bar
	// FIXME: ProgressReader shouldn't be this annoying to use
	if context != nil {
		sf := utils.NewStreamFormatter(false)
		body = progressreader.New(progressreader.Config{
			In:        context,
			Out:       cli.out,
			Formatter: sf,
			NewLines:  true,
			ID:        "",
			Action:    "Sending build context to Docker daemon",
		})
	}

	var memory int64
	if *flMemoryString != "" {
		parsedMemory, err := units.RAMInBytes(*flMemoryString)
		if err != nil {
			return err
		}
		memory = parsedMemory
	}

	var memorySwap int64
	if *flMemorySwap != "" {
		if *flMemorySwap == "-1" {
			memorySwap = -1
		} else {
			parsedMemorySwap, err := units.RAMInBytes(*flMemorySwap)
			if err != nil {
				return err
			}
			memorySwap = parsedMemorySwap
		}
	}
	// Send the build context
	v := &url.Values{}

	//Check if the given image name can be resolved
	if *tag != "" {
		repository, tag := parsers.ParseRepositoryTag(*tag)
		if err := registry.ValidateRepositoryName(repository); err != nil {
			return err
		}
		if len(tag) > 0 {
			if err := graph.ValidateTagName(tag); err != nil {
				return err
			}
		}
	}

	v.Set("t", *tag)

	if *suppressOutput {
		v.Set("q", "1")
	}
	if isRemote {
		v.Set("remote", cmd.Arg(0))
	}
	if *noCache {
		v.Set("nocache", "1")
	}
	if *rm {
		v.Set("rm", "1")
	} else {
		v.Set("rm", "0")
	}

	if *forceRm {
		v.Set("forcerm", "1")
	}

	if *pull {
		v.Set("pull", "1")
	}

	v.Set("cpusetcpus", *flCpuSetCpus)
	v.Set("cpushares", strconv.FormatInt(*flCpuShares, 10))
	v.Set("memory", strconv.FormatInt(memory, 10))
	v.Set("memswap", strconv.FormatInt(memorySwap, 10))

	v.Set("dockerfile", *dockerfileName)

	cli.LoadConfigFile()

	headers := http.Header(make(map[string][]string))
	buf, err := json.Marshal(cli.configFile)
	if err != nil {
		return err
	}
	headers.Add("X-Registry-Config", base64.URLEncoding.EncodeToString(buf))

	if context != nil {
		headers.Set("Content-Type", "application/tar")
	}
	err = cli.stream("POST", fmt.Sprintf("/build?%s", v.Encode()), body, cli.out, headers)
	if jerr, ok := err.(*utils.JSONError); ok {
		// If no error code is set, default to 1
		if jerr.Code == 0 {
			jerr.Code = 1
		}
		return &utils.StatusError{Status: jerr.Message, StatusCode: jerr.Code}
	}
	return err
}
Exemple #4
0
func NewDeviceSet(root string, doInit bool, options []string) (*DeviceSet, error) {
	SetDevDir("/dev")

	devices := &DeviceSet{
		root:                 root,
		MetaData:             MetaData{Devices: make(map[string]*DevInfo)},
		dataLoopbackSize:     DefaultDataLoopbackSize,
		metaDataLoopbackSize: DefaultMetaDataLoopbackSize,
		baseFsSize:           DefaultBaseFsSize,
		filesystem:           "ext4",
		doBlkDiscard:         true,
		thinpBlockSize:       DefaultThinpBlockSize,
	}

	foundBlkDiscard := false
	for _, option := range options {
		key, val, err := parsers.ParseKeyValueOpt(option)
		if err != nil {
			return nil, err
		}
		key = strings.ToLower(key)
		switch key {
		case "dm.basesize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.baseFsSize = uint64(size)
		case "dm.loopdatasize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.dataLoopbackSize = size
		case "dm.loopmetadatasize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.metaDataLoopbackSize = size
		case "dm.fs":
			if val != "ext4" && val != "xfs" {
				return nil, fmt.Errorf("Unsupported filesystem %s\n", val)
			}
			devices.filesystem = val
		case "dm.mkfsarg":
			devices.mkfsArgs = append(devices.mkfsArgs, val)
		case "dm.mountopt":
			devices.mountOptions = joinMountOptions(devices.mountOptions, val)
		case "dm.metadatadev":
			devices.metadataDevice = val
		case "dm.datadev":
			devices.dataDevice = val
		case "dm.blkdiscard":
			foundBlkDiscard = true
			devices.doBlkDiscard, err = strconv.ParseBool(val)
			if err != nil {
				return nil, err
			}
		case "dm.blocksize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			// convert to 512b sectors
			devices.thinpBlockSize = uint32(size) >> 9
		default:
			return nil, fmt.Errorf("Unknown option %s\n", key)
		}
	}

	// By default, don't do blk discard hack on raw devices, its rarely useful and is expensive
	if !foundBlkDiscard && devices.dataDevice != "" {
		devices.doBlkDiscard = false
	}

	if err := devices.initDevmapper(doInit); err != nil {
		return nil, err
	}

	return devices, nil
}
Exemple #5
0
// Parse parses the specified args for the specified command and generates a Config,
// a HostConfig and returns them with the specified command.
// If the specified args are not valid, it will return an error.
func Parse(cmd *flag.FlagSet, args []string) (*Config, *HostConfig, *flag.FlagSet, error) {
	var (
		// FIXME: use utils.ListOpts for attach and volumes?
		flAttach  = opts.NewListOpts(opts.ValidateAttach)
		flVolumes = opts.NewListOpts(opts.ValidatePath)
		flLinks   = opts.NewListOpts(opts.ValidateLink)
		flEnv     = opts.NewListOpts(opts.ValidateEnv)
		flLabels  = opts.NewListOpts(opts.ValidateEnv)
		flDevices = opts.NewListOpts(opts.ValidateDevice)

		flUlimits = opts.NewUlimitOpt(nil)

		flPublish     = opts.NewListOpts(nil)
		flExpose      = opts.NewListOpts(nil)
		flDNS         = opts.NewListOpts(opts.ValidateIPAddress)
		flDNSSearch   = opts.NewListOpts(opts.ValidateDNSSearch)
		flDNSOptions  = opts.NewListOpts(nil)
		flExtraHosts  = opts.NewListOpts(opts.ValidateExtraHost)
		flVolumesFrom = opts.NewListOpts(nil)
		flLxcOpts     = opts.NewListOpts(nil)
		flEnvFile     = opts.NewListOpts(nil)
		flCapAdd      = opts.NewListOpts(nil)
		flCapDrop     = opts.NewListOpts(nil)
		flGroupAdd    = opts.NewListOpts(nil)
		flSecurityOpt = opts.NewListOpts(nil)
		flLabelsFile  = opts.NewListOpts(nil)
		flLoggingOpts = opts.NewListOpts(nil)

		flNetwork           = cmd.Bool([]string{"#n", "#-networking"}, true, "Enable networking for this container")
		flPrivileged        = cmd.Bool([]string{"#privileged", "-privileged"}, false, "Give extended privileges to this container")
		flPidMode           = cmd.String([]string{"-pid"}, "", "PID namespace to use")
		flUTSMode           = cmd.String([]string{"-uts"}, "", "UTS namespace to use")
		flPublishAll        = cmd.Bool([]string{"P", "-publish-all"}, false, "Publish all exposed ports to random ports")
		flStdin             = cmd.Bool([]string{"i", "-interactive"}, false, "Keep STDIN open even if not attached")
		flTty               = cmd.Bool([]string{"t", "-tty"}, false, "Allocate a pseudo-TTY")
		flOomKillDisable    = cmd.Bool([]string{"-oom-kill-disable"}, false, "Disable OOM Killer")
		flContainerIDFile   = cmd.String([]string{"#cidfile", "-cidfile"}, "", "Write the container ID to the file")
		flEntrypoint        = cmd.String([]string{"#entrypoint", "-entrypoint"}, "", "Overwrite the default ENTRYPOINT of the image")
		flHostname          = cmd.String([]string{"h", "-hostname"}, "", "Container host name")
		flMemoryString      = cmd.String([]string{"m", "-memory"}, "", "Memory limit")
		flMemoryReservation = cmd.String([]string{"-memory-reservation"}, "", "Memory soft limit")
		flMemorySwap        = cmd.String([]string{"-memory-swap"}, "", "Total memory (memory + swap), '-1' to disable swap")
		flKernelMemory      = cmd.String([]string{"-kernel-memory"}, "", "Kernel memory limit")
		flUser              = cmd.String([]string{"u", "-user"}, "", "Username or UID (format: <name|uid>[:<group|gid>])")
		flWorkingDir        = cmd.String([]string{"w", "-workdir"}, "", "Working directory inside the container")
		flCPUShares         = cmd.Int64([]string{"#c", "-cpu-shares"}, 0, "CPU shares (relative weight)")
		flCPUPeriod         = cmd.Int64([]string{"-cpu-period"}, 0, "Limit CPU CFS (Completely Fair Scheduler) period")
		flCPUQuota          = cmd.Int64([]string{"-cpu-quota"}, 0, "Limit CPU CFS (Completely Fair Scheduler) quota")
		flCpusetCpus        = cmd.String([]string{"#-cpuset", "-cpuset-cpus"}, "", "CPUs in which to allow execution (0-3, 0,1)")
		flCpusetMems        = cmd.String([]string{"-cpuset-mems"}, "", "MEMs in which to allow execution (0-3, 0,1)")
		flBlkioWeight       = cmd.Uint16([]string{"-blkio-weight"}, 0, "Block IO (relative weight), between 10 and 1000")
		flSwappiness        = cmd.Int64([]string{"-memory-swappiness"}, -1, "Tuning container memory swappiness (0 to 100)")
		flNetMode           = cmd.String([]string{"-net"}, "default", "Set the Network for the container")
		flMacAddress        = cmd.String([]string{"-mac-address"}, "", "Container MAC address (e.g. 92:d0:c6:0a:29:33)")
		flIpcMode           = cmd.String([]string{"-ipc"}, "", "IPC namespace to use")
		flRestartPolicy     = cmd.String([]string{"-restart"}, "no", "Restart policy to apply when a container exits")
		flReadonlyRootfs    = cmd.Bool([]string{"-read-only"}, false, "Mount the container's root filesystem as read only")
		flLoggingDriver     = cmd.String([]string{"-log-driver"}, "", "Logging driver for container")
		flCgroupParent      = cmd.String([]string{"-cgroup-parent"}, "", "Optional parent cgroup for the container")
		flVolumeDriver      = cmd.String([]string{"-volume-driver"}, "", "Optional volume driver for the container")
		flStopSignal        = cmd.String([]string{"-stop-signal"}, signal.DefaultStopSignal, fmt.Sprintf("Signal to stop a container, %v by default", signal.DefaultStopSignal))
	)

	cmd.Var(&flAttach, []string{"a", "-attach"}, "Attach to STDIN, STDOUT or STDERR")
	cmd.Var(&flVolumes, []string{"v", "-volume"}, "Bind mount a volume")
	cmd.Var(&flLinks, []string{"#link", "-link"}, "Add link to another container")
	cmd.Var(&flDevices, []string{"-device"}, "Add a host device to the container")
	cmd.Var(&flLabels, []string{"l", "-label"}, "Set meta data on a container")
	cmd.Var(&flLabelsFile, []string{"-label-file"}, "Read in a line delimited file of labels")
	cmd.Var(&flEnv, []string{"e", "-env"}, "Set environment variables")
	cmd.Var(&flEnvFile, []string{"-env-file"}, "Read in a file of environment variables")
	cmd.Var(&flPublish, []string{"p", "-publish"}, "Publish a container's port(s) to the host")
	cmd.Var(&flExpose, []string{"#expose", "-expose"}, "Expose a port or a range of ports")
	cmd.Var(&flDNS, []string{"#dns", "-dns"}, "Set custom DNS servers")
	cmd.Var(&flDNSSearch, []string{"-dns-search"}, "Set custom DNS search domains")
	cmd.Var(&flDNSOptions, []string{"-dns-opt"}, "Set DNS options")
	cmd.Var(&flExtraHosts, []string{"-add-host"}, "Add a custom host-to-IP mapping (host:ip)")
	cmd.Var(&flVolumesFrom, []string{"#volumes-from", "-volumes-from"}, "Mount volumes from the specified container(s)")
	cmd.Var(&flLxcOpts, []string{"#lxc-conf", "-lxc-conf"}, "Add custom lxc options")
	cmd.Var(&flCapAdd, []string{"-cap-add"}, "Add Linux capabilities")
	cmd.Var(&flCapDrop, []string{"-cap-drop"}, "Drop Linux capabilities")
	cmd.Var(&flGroupAdd, []string{"-group-add"}, "Add additional groups to join")
	cmd.Var(&flSecurityOpt, []string{"-security-opt"}, "Security Options")
	cmd.Var(flUlimits, []string{"-ulimit"}, "Ulimit options")
	cmd.Var(&flLoggingOpts, []string{"-log-opt"}, "Log driver options")

	cmd.Require(flag.Min, 1)

	if err := cmd.ParseFlags(args, true); err != nil {
		return nil, nil, cmd, err
	}

	var (
		attachStdin  = flAttach.Get("stdin")
		attachStdout = flAttach.Get("stdout")
		attachStderr = flAttach.Get("stderr")
	)

	// Validate the input mac address
	if *flMacAddress != "" {
		if _, err := opts.ValidateMACAddress(*flMacAddress); err != nil {
			return nil, nil, cmd, fmt.Errorf("%s is not a valid mac address", *flMacAddress)
		}
	}
	if *flStdin {
		attachStdin = true
	}
	// If -a is not set attach to the output stdio
	if flAttach.Len() == 0 {
		attachStdout = true
		attachStderr = true
	}

	var err error

	var flMemory int64
	if *flMemoryString != "" {
		flMemory, err = units.RAMInBytes(*flMemoryString)
		if err != nil {
			return nil, nil, cmd, err
		}
	}

	var MemoryReservation int64
	if *flMemoryReservation != "" {
		MemoryReservation, err = units.RAMInBytes(*flMemoryReservation)
		if err != nil {
			return nil, nil, cmd, err
		}
	}

	var memorySwap int64
	if *flMemorySwap != "" {
		if *flMemorySwap == "-1" {
			memorySwap = -1
		} else {
			memorySwap, err = units.RAMInBytes(*flMemorySwap)
			if err != nil {
				return nil, nil, cmd, err
			}
		}
	}

	var KernelMemory int64
	if *flKernelMemory != "" {
		KernelMemory, err = units.RAMInBytes(*flKernelMemory)
		if err != nil {
			return nil, nil, cmd, err
		}
	}

	swappiness := *flSwappiness
	if swappiness != -1 && (swappiness < 0 || swappiness > 100) {
		return nil, nil, cmd, fmt.Errorf("Invalid value: %d. Valid memory swappiness range is 0-100", swappiness)
	}

	var binds []string
	// add any bind targets to the list of container volumes
	for bind := range flVolumes.GetMap() {
		if arr := strings.Split(bind, ":"); len(arr) > 1 {
			if arr[1] == "/" {
				return nil, nil, cmd, fmt.Errorf("Invalid bind mount: destination can't be '/'")
			}
			// after creating the bind mount we want to delete it from the flVolumes values because
			// we do not want bind mounts being committed to image configs
			binds = append(binds, bind)
			flVolumes.Delete(bind)
		} else if bind == "/" {
			return nil, nil, cmd, fmt.Errorf("Invalid volume: path can't be '/'")
		}
	}

	var (
		parsedArgs = cmd.Args()
		runCmd     *stringutils.StrSlice
		entrypoint *stringutils.StrSlice
		image      = cmd.Arg(0)
	)
	if len(parsedArgs) > 1 {
		runCmd = stringutils.NewStrSlice(parsedArgs[1:]...)
	}
	if *flEntrypoint != "" {
		entrypoint = stringutils.NewStrSlice(*flEntrypoint)
	}

	lc, err := parseKeyValueOpts(flLxcOpts)
	if err != nil {
		return nil, nil, cmd, err
	}
	lxcConf := NewLxcConfig(lc)

	var (
		domainname string
		hostname   = *flHostname
		parts      = strings.SplitN(hostname, ".", 2)
	)
	if len(parts) > 1 {
		hostname = parts[0]
		domainname = parts[1]
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, cmd, fmt.Errorf("Invalid port format for --expose: %s", e)
		}
		//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
		proto, port := nat.SplitProtoPort(e)
		//parse the start and end port and create a sequence of ports to expose
		//if expose a port, the start and end port are the same
		start, end, err := parsers.ParsePortRange(port)
		if err != nil {
			return nil, nil, cmd, fmt.Errorf("Invalid range format for --expose: %s, error: %s", e, err)
		}
		for i := start; i <= end; i++ {
			p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, nil, cmd, err
			}
			if _, exists := ports[p]; !exists {
				ports[p] = struct{}{}
			}
		}
	}

	// parse device mappings
	deviceMappings := []DeviceMapping{}
	for _, device := range flDevices.GetAll() {
		deviceMapping, err := ParseDevice(device)
		if err != nil {
			return nil, nil, cmd, err
		}
		deviceMappings = append(deviceMappings, deviceMapping)
	}

	// collect all the environment variables for the container
	envVariables, err := readKVStrings(flEnvFile.GetAll(), flEnv.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	// collect all the labels for the container
	labels, err := readKVStrings(flLabelsFile.GetAll(), flLabels.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	ipcMode := IpcMode(*flIpcMode)
	if !ipcMode.Valid() {
		return nil, nil, cmd, fmt.Errorf("--ipc: invalid IPC mode")
	}

	pidMode := PidMode(*flPidMode)
	if !pidMode.Valid() {
		return nil, nil, cmd, fmt.Errorf("--pid: invalid PID mode")
	}

	utsMode := UTSMode(*flUTSMode)
	if !utsMode.Valid() {
		return nil, nil, cmd, fmt.Errorf("--uts: invalid UTS mode")
	}

	restartPolicy, err := ParseRestartPolicy(*flRestartPolicy)
	if err != nil {
		return nil, nil, cmd, err
	}

	loggingOpts, err := parseLoggingOpts(*flLoggingDriver, flLoggingOpts.GetAll())
	if err != nil {
		return nil, nil, cmd, err
	}

	config := &Config{
		Hostname:        hostname,
		Domainname:      domainname,
		ExposedPorts:    ports,
		User:            *flUser,
		Tty:             *flTty,
		NetworkDisabled: !*flNetwork,
		OpenStdin:       *flStdin,
		AttachStdin:     attachStdin,
		AttachStdout:    attachStdout,
		AttachStderr:    attachStderr,
		Env:             envVariables,
		Cmd:             runCmd,
		Image:           image,
		Volumes:         flVolumes.GetMap(),
		MacAddress:      *flMacAddress,
		Entrypoint:      entrypoint,
		WorkingDir:      *flWorkingDir,
		Labels:          ConvertKVStringsToMap(labels),
		StopSignal:      *flStopSignal,
	}

	hostConfig := &HostConfig{
		Binds:             binds,
		ContainerIDFile:   *flContainerIDFile,
		LxcConf:           lxcConf,
		Memory:            flMemory,
		MemoryReservation: MemoryReservation,
		MemorySwap:        memorySwap,
		KernelMemory:      KernelMemory,
		CPUShares:         *flCPUShares,
		CPUPeriod:         *flCPUPeriod,
		CpusetCpus:        *flCpusetCpus,
		CpusetMems:        *flCpusetMems,
		CPUQuota:          *flCPUQuota,
		BlkioWeight:       *flBlkioWeight,
		OomKillDisable:    *flOomKillDisable,
		MemorySwappiness:  flSwappiness,
		Privileged:        *flPrivileged,
		PortBindings:      portBindings,
		Links:             flLinks.GetAll(),
		PublishAllPorts:   *flPublishAll,
		// 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:            flDNS.GetAllOrEmpty(),
		DNSSearch:      flDNSSearch.GetAllOrEmpty(),
		DNSOptions:     flDNSOptions.GetAllOrEmpty(),
		ExtraHosts:     flExtraHosts.GetAll(),
		VolumesFrom:    flVolumesFrom.GetAll(),
		NetworkMode:    NetworkMode(*flNetMode),
		IpcMode:        ipcMode,
		PidMode:        pidMode,
		UTSMode:        utsMode,
		Devices:        deviceMappings,
		CapAdd:         stringutils.NewStrSlice(flCapAdd.GetAll()...),
		CapDrop:        stringutils.NewStrSlice(flCapDrop.GetAll()...),
		GroupAdd:       flGroupAdd.GetAll(),
		RestartPolicy:  restartPolicy,
		SecurityOpt:    flSecurityOpt.GetAll(),
		ReadonlyRootfs: *flReadonlyRootfs,
		Ulimits:        flUlimits.GetList(),
		LogConfig:      LogConfig{Type: *flLoggingDriver, Config: loggingOpts},
		CgroupParent:   *flCgroupParent,
		VolumeDriver:   *flVolumeDriver,
	}

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