func parseLxcConfOpts(opts opts.ListOpts) ([]KeyValuePair, error) {
out := make([]KeyValuePair, opts.Len())
for i, o := range opts.GetAll() {
k, v, err := parseLxcOpt(o)
if err != nil {
return nil, err
}
out[i] = KeyValuePair{Key: k, Value: v}
}
return out, nil
}
func parseRun(cmd *flag.FlagSet, args []string, sysInfo *sysinfo.SysInfo) (*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)
flPublish opts.ListOpts
flExpose opts.ListOpts
flDns opts.ListOpts
flVolumesFrom opts.ListOpts
flLxcOpts opts.ListOpts
flAutoRemove = cmd.Bool([]string{"#rm", "-rm"}, false, "Automatically remove the container when it exits (incompatible with -d)")
flDetach = cmd.Bool([]string{"d", "-detach"}, false, "Detached mode: Run container in the background, print new container id")
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")
flPublishAll = cmd.Bool([]string{"P", "-publish-all"}, false, "Publish all exposed ports to the host interfaces")
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 (format: <number><optional unit>, where unit = b, k, m or g)")
flUser = cmd.String([]string{"u", "-user"}, "", "Username or UID")
flWorkingDir = cmd.String([]string{"w", "-workdir"}, "", "Working directory inside the container")
flCpuShares = cmd.Int64([]string{"c", "-cpu-shares"}, 0, "CPU shares (relative weight)")
// For documentation purpose
_ = cmd.Bool([]string{"#sig-proxy", "-sig-proxy"}, true, "Proxify all received signal to the process (even in non-tty mode)")
_ = cmd.String([]string{"#name", "-name"}, "", "Assign a name to the container")
)
cmd.Var(&flAttach, []string{"a", "-attach"}, "Attach to stdin, stdout or stderr.")
cmd.Var(&flVolumes, []string{"v", "-volume"}, "Bind mount a volume (e.g. from the host: -v /host:/container, from docker: -v /container)")
cmd.Var(&flLinks, []string{"#link", "-link"}, "Add link to another container (name:alias)")
cmd.Var(&flEnv, []string{"e", "-env"}, "Set environment variables")
cmd.Var(&flPublish, []string{"p", "-publish"}, fmt.Sprintf("Publish a container's port to the host (format: %s) (use 'docker port' to see the actual mapping)", nat.PortSpecTemplateFormat))
cmd.Var(&flExpose, []string{"#expose", "-expose"}, "Expose a port from the container without publishing it to your host")
cmd.Var(&flDns, []string{"#dns", "-dns"}, "Set custom dns servers")
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 -lxc-conf=\"lxc.cgroup.cpuset.cpus = 0,1\"")
if err := cmd.Parse(args); err != nil {
return nil, nil, cmd, err
}
// Check if the kernel supports memory limit cgroup.
if sysInfo != nil && *flMemoryString != "" && !sysInfo.MemoryLimit {
*flMemoryString = ""
}
// Validate input params
if *flDetach && flAttach.Len() > 0 {
return nil, nil, cmd, ErrConflictAttachDetach
}
if *flWorkingDir != "" && !path.IsAbs(*flWorkingDir) {
return nil, nil, cmd, ErrInvalidWorikingDirectory
}
if *flDetach && *flAutoRemove {
return nil, nil, cmd, ErrConflictDetachAutoRemove
}
// If neither -d or -a are set, attach to everything by default
if flAttach.Len() == 0 && !*flDetach {
if !*flDetach {
flAttach.Set("stdout")
flAttach.Set("stderr")
if *flStdin {
flAttach.Set("stdin")
}
}
}
var flMemory int64
if *flMemoryString != "" {
parsedMemory, err := utils.RAMInBytes(*flMemoryString)
if err != nil {
return nil, nil, cmd, err
}
flMemory = parsedMemory
}
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[0] == "/" {
return nil, nil, cmd, fmt.Errorf("Invalid bind mount: source can't be '/'")
}
dstDir := arr[1]
flVolumes.Set(dstDir)
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 string
)
if len(parsedArgs) >= 1 {
image = cmd.Arg(0)
}
if len(parsedArgs) > 1 {
runCmd = parsedArgs[1:]
}
if *flEntrypoint != "" {
entrypoint = []string{*flEntrypoint}
}
lxcConf, err := parseLxcConfOpts(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)
}
p := nat.NewPort(nat.SplitProtoPort(e))
if _, exists := ports[p]; !exists {
ports[p] = struct{}{}
}
}
config := &Config{
Hostname: hostname,
Domainname: domainname,
PortSpecs: nil, // Deprecated
ExposedPorts: ports,
User: *flUser,
Tty: *flTty,
NetworkDisabled: !*flNetwork,
OpenStdin: *flStdin,
Memory: flMemory,
CpuShares: *flCpuShares,
AttachStdin: flAttach.Get("stdin"),
AttachStdout: flAttach.Get("stdout"),
AttachStderr: flAttach.Get("stderr"),
Env: flEnv.GetAll(),
Cmd: runCmd,
Dns: flDns.GetAll(),
Image: image,
Volumes: flVolumes.GetMap(),
VolumesFrom: strings.Join(flVolumesFrom.GetAll(), ","),
Entrypoint: entrypoint,
WorkingDir: *flWorkingDir,
}
hostConfig := &HostConfig{
Binds: binds,
ContainerIDFile: *flContainerIDFile,
LxcConf: lxcConf,
Privileged: *flPrivileged,
PortBindings: portBindings,
Links: flLinks.GetAll(),
PublishAllPorts: *flPublishAll,
}
if sysInfo != nil && flMemory > 0 && !sysInfo.SwapLimit {
//fmt.Fprintf(stdout, "WARNING: Your kernel does not support swap limit capabilities. Limitation discarded.\n")
config.MemorySwap = -1
}
// When allocating stdin in attached mode, close stdin at client disconnect
if config.OpenStdin && config.AttachStdin {
config.StdinOnce = true
}
return config, hostConfig, cmd, nil
}