// useNativeConsole determines if the docker client should use the built-in
// console which supports ANSI emulation, or fall-back to the golang emulator
// (github.com/azure/go-ansiterm).
func useNativeConsole() bool {
osv := system.GetOSVersion()
// Native console is not available before major version 10
if osv.MajorVersion < 10 {
return false
}
// Get the console modes. If this fails, we can't use the native console
state, err := getNativeConsole()
if err != nil {
return false
}
// Probe the console to see if it can be enabled.
if nil != probeNativeConsole(state) {
return false
}
// Environment variable override
if e := os.Getenv("USE_NATIVE_CONSOLE"); e != "" {
if e == "1" {
return true
}
return false
}
// Must have a post-TP5 RS1 build of Windows Server 2016/Windows 10 for
// the native console to be usable.
if osv.Build < 14350 {
return false
}
return true
}
// useNativeConsole determines if the docker client should use the built-in
// console which supports ANSI emulation, or fall-back to the golang emulator
// (github.com/azure/go-ansiterm).
func useNativeConsole() bool {
osv := system.GetOSVersion()
// Native console is not available before major version 10
if osv.MajorVersion < 10 {
return false
}
// Get the console modes. If this fails, we can't use the native console
state, err := getNativeConsole()
if err != nil {
return false
}
// Probe the console to see if it can be enabled.
if nil != probeNativeConsole(state) {
return false
}
// Environment variable override
if e := os.Getenv("USE_NATIVE_CONSOLE"); e != "" {
if e == "1" {
return true
}
return false
}
// TODO Windows. The native emulator still has issues which
// mean it shouldn't be enabled for everyone. Change this next line to true
// to change the default to "enable if available". In the meantime, users
// can still try it out by using USE_NATIVE_CONSOLE env variable.
return false
}
// checkSystem validates platform-specific requirements
func checkSystem() error {
// Validate the OS version. Note that docker.exe must be manifested for this
// call to return the correct version.
osv := system.GetOSVersion()
if osv.MajorVersion < 10 {
return fmt.Errorf("This version of Windows does not support the docker daemon")
}
if osv.Build < 14300 {
return fmt.Errorf("The Windows daemon requires Windows Server 2016 Technical Preview 5 build 14300 or later")
}
return nil
}
func init() {
osv := system.GetOSVersion()
// Read-only volumes supported from 14350 onwards (post Windows Server 2016 TP5)
// Mode (optional):
// - Hopefully self explanatory in comparison to above regex's.
// - Colon is not in the capture group
if osv.Build >= 14350 {
RXMode = `(:(?P<mode>(?i)ro|rw))?`
} else {
RXMode = `(:(?P<mode>(?i)rw))?`
}
}
// checkSystem validates platform-specific requirements
func checkSystem() error {
// Validate the OS version. Note that docker.exe must be manifested for this
// call to return the correct version.
osv, err := system.GetOSVersion()
if err != nil {
return err
}
if osv.MajorVersion < 10 {
return fmt.Errorf("This version of Windows does not support the docker daemon")
}
return nil
}
// useNativeConsole determines if the docker client should use the built-in
// console which supports ANSI emulation, or fall-back to the golang emulator
// (github.com/azure/go-ansiterm).
func useNativeConsole() bool {
osv, err := system.GetOSVersion()
if err != nil {
return false
}
// Native console is not available major version 10
if osv.MajorVersion < 10 {
return false
}
// Must have a late pre-release TP4 build of Windows Server 2016/Windows 10 TH2 or later
if osv.Build < 10578 {
return false
}
// Environment variable override
if e := os.Getenv("USE_NATIVE_CONSOLE"); e != "" {
if e == "1" {
return true
}
return false
}
// Get the handle to stdout
stdOutHandle, err := syscall.GetStdHandle(syscall.STD_OUTPUT_HANDLE)
if err != nil {
return false
}
// Get the console mode from the consoles stdout handle
var mode uint32
if err := syscall.GetConsoleMode(stdOutHandle, &mode); err != nil {
return false
}
// Legacy mode does not have native ANSI emulation.
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms683167(v=vs.85).aspx
const enableVirtualTerminalProcessing = 0x0004
if mode&enableVirtualTerminalProcessing == 0 {
return false
}
// TODO Windows (Post TP4). The native emulator still has issues which
// mean it shouldn't be enabled for everyone. Change this next line to true
// to change the default to "enable if available". In the meantime, users
// can still try it out by using USE_NATIVE_CONSOLE env variable.
return false
}
// checkSystem validates platform-specific requirements
func checkSystem() error {
// Validate the OS version. Note that docker.exe must be manifested for this
// call to return the correct version.
osv := system.GetOSVersion()
if osv.MajorVersion < 10 {
return fmt.Errorf("This version of Windows does not support the docker daemon")
}
if osv.Build < 14393 {
return fmt.Errorf("The docker daemon requires build 14393 or later of Windows Server 2016 or Windows 10")
}
vmcompute := windows.NewLazySystemDLL("vmcompute.dll")
if vmcompute.Load() != nil {
return fmt.Errorf("Failed to load vmcompute.dll. Ensure that the Containers role is installed.")
}
return nil
}
func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
return nil
}
netOption := map[string]string{
winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
}
var ipamOption libnetwork.NetworkOption
var subnetPrefix string
if config.bridgeConfig.FixedCIDR != "" {
subnetPrefix = config.bridgeConfig.FixedCIDR
} else {
// TP5 doesn't support properly detecting subnet
osv := system.GetOSVersion()
if osv.Build < 14360 {
subnetPrefix = defaultNetworkSpace
}
}
if subnetPrefix != "" {
ipamV4Conf := libnetwork.IpamConf{}
ipamV4Conf.PreferredPool = subnetPrefix
v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
v6Conf := []*libnetwork.IpamConf{}
ipamOption = libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil)
}
_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(), "",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
}),
ipamOption,
)
if err != nil {
return fmt.Errorf("Error creating default network: %v", err)
}
return nil
}
// fixStdinBackspaceBehavior works around a bug in Windows before build 14350
// where it interpreted DEL as VK_DELETE instead of as VK_BACK. This replaces
// DEL with BS to work around this.
func fixStdinBackspaceBehavior(w io.WriteCloser, tty bool) io.WriteCloser {
if !tty || system.GetOSVersion().Build >= 14350 {
return w
}
return &delToBsWriter{w}
}
func isTP5OrOlder() bool {
return system.GetOSVersion().Build <= 14300
}
func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
// TODO Windows: Remove this check once TP4 is no longer supported
osv, err := system.GetOSVersion()
if err != nil {
return nil, err
}
if osv.Build < 14260 {
// Set the name of the virtual switch if not specified by -b on daemon start
if config.bridgeConfig.Iface == "" {
config.bridgeConfig.Iface = defaultVirtualSwitch
}
logrus.Warnf("Network controller is not supported by the current platform build version")
return nil, nil
}
netOptions, err := daemon.networkOptions(config)
if err != nil {
return nil, err
}
controller, err := libnetwork.New(netOptions...)
if err != nil {
return nil, fmt.Errorf("error obtaining controller instance: %v", err)
}
hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
if err != nil {
return nil, err
}
// Remove networks not present in HNS
for _, v := range controller.Networks() {
options := v.Info().DriverOptions()
hnsid := options[winlibnetwork.HNSID]
found := false
for _, v := range hnsresponse {
if v.Id == hnsid {
found = true
break
}
}
if !found {
err = v.Delete()
if err != nil {
return nil, err
}
}
}
_, err = controller.NewNetwork("null", "none", libnetwork.NetworkOptionPersist(false))
if err != nil {
return nil, err
}
// discover and add HNS networks to windows
// network that exist are removed and added again
for _, v := range hnsresponse {
var n libnetwork.Network
s := func(current libnetwork.Network) bool {
options := current.Info().DriverOptions()
if options[winlibnetwork.HNSID] == v.Id {
n = current
return true
}
return false
}
controller.WalkNetworks(s)
if n != nil {
v.Name = n.Name()
n.Delete()
}
netOption := map[string]string{
winlibnetwork.NetworkName: v.Name,
winlibnetwork.HNSID: v.Id,
}
v4Conf := []*libnetwork.IpamConf{}
for _, subnet := range v.Subnets {
ipamV4Conf := libnetwork.IpamConf{}
ipamV4Conf.PreferredPool = subnet.AddressPrefix
ipamV4Conf.Gateway = subnet.GatewayAddress
v4Conf = append(v4Conf, &ipamV4Conf)
}
name := v.Name
// There is only one nat network supported in windows.
// If it exists with a different name add it as the default name
if runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
name = runconfig.DefaultDaemonNetworkMode().NetworkName()
}
v6Conf := []*libnetwork.IpamConf{}
_, err := controller.NewNetwork(strings.ToLower(v.Type), name,
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
}),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
)
if err != nil {
logrus.Errorf("Error occurred when creating network %v", err)
}
}
if !config.DisableBridge {
// Initialize default driver "bridge"
if err := initBridgeDriver(controller, config); err != nil {
return nil, err
}
}
return controller, nil
}
func getOSVersion() string {
v := system.GetOSVersion()
return fmt.Sprintf("%d.%d.%d", v.MajorVersion, v.MinorVersion, v.Build)
}