diff --git a/go.mod b/go.mod
index 7b506c3..a4c8b07 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
 	github.com/gyuho/goraph v0.0.0-20160328020532-d460590d53a9
-	github.com/opencord/voltha-lib-go/v2 v2.2.10
+	github.com/opencord/voltha-lib-go/v2 v2.2.12
 	github.com/opencord/voltha-protos/v2 v2.0.1
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0
diff --git a/go.sum b/go.sum
index 3278b61..6a5fe52 100644
--- a/go.sum
+++ b/go.sum
@@ -192,8 +192,8 @@
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.2 h1:3mYCb7aPxS/RU7TI1y4rkEn1oKmPRjNJLNEXgw7MH2I=
 github.com/onsi/gomega v1.4.2/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/opencord/voltha-lib-go/v2 v2.2.10 h1:BbTkuMnIhz1Uwb6oCQIpQFd0ppH12hqxO5ZZWR+eGog=
-github.com/opencord/voltha-lib-go/v2 v2.2.10/go.mod h1:Hql0xWiBFqYM6WpE5G+w9//NdaIoR9mVzcvVYDxEnZY=
+github.com/opencord/voltha-lib-go/v2 v2.2.12 h1:QymMvOZwrnW3caPmeUycNqMGZceNC8x3AC5exF5IO4E=
+github.com/opencord/voltha-lib-go/v2 v2.2.12/go.mod h1:Hql0xWiBFqYM6WpE5G+w9//NdaIoR9mVzcvVYDxEnZY=
 github.com/opencord/voltha-protos/v2 v2.0.1 h1:vcE0XxNVeu0SED0bW2lf2w24k/QMFrFqMexuedIyTEg=
 github.com/opencord/voltha-protos/v2 v2.0.1/go.mod h1:6kOcfYi1CadWowFxI2SH5wLfHrsRECZLZlD2MFK6WDI=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
diff --git a/python/ofagent/connection_mgr.py b/python/ofagent/connection_mgr.py
index a141946..3b10280 100755
--- a/python/ofagent/connection_mgr.py
+++ b/python/ofagent/connection_mgr.py
@@ -38,6 +38,7 @@
 
 class ConnectionManager(object):
     running = False
+    core_ready = False
     channel = None
     subscription = None
     grpc_client = None
@@ -83,6 +84,7 @@
         log.debug('starting')
 
         self.running = True
+        ConnectionManager.core_ready = True  # Assume core is ready until proven otherwise
         ConnectionManager.running = True
 
         # Get a subscription to vcore
@@ -103,7 +105,7 @@
     @classmethod
     def readiness_probe(cls):
         # Pod is isolated when readiness condition fails
-        return bool(ConnectionManager.channel and ConnectionManager.subscription and ConnectionManager.grpc_client)
+        return bool(ConnectionManager.core_ready and ConnectionManager.channel and ConnectionManager.subscription and ConnectionManager.grpc_client)
 
     def stop(self):
         log.debug('stopping')
@@ -228,13 +230,14 @@
 
     @inlineCallbacks
     def get_list_of_logical_devices_from_voltha(self):
-
         while self.running:
             log.info('retrieve-logical-device-list')
             try:
                 devices = yield \
                     self.grpc_client.list_logical_devices()
 
+                ConnectionManager.core_ready = True  # We've successfully talked to the core
+
                 for device in devices:
                     log.info("logical-device-entry", id=device.id,
                              datapath_id=device.datapath_id)
@@ -244,11 +247,11 @@
             except _Rendezvous, e:
                 status = e.code()
                 log.error('vcore-communication-failure', exception=e, status=status)
-                if status == StatusCode.UNAVAILABLE or status == StatusCode.DEADLINE_EXCEEDED:
-                    os.system("kill -15 {}".format(os.getpid()))
+                ConnectionManager.core_ready = False  # Will be reflected in readiness probe
 
             except Exception as e:
                 log.exception('logical-devices-retrieval-failure', exception=e)
+                ConnectionManager.core_ready = False  # will be reflected in readiness probe
 
             log.info('reconnect', after_delay=self.vcore_retry_interval)
             yield asleep(self.vcore_retry_interval)
diff --git a/ro_core/core/core.go b/ro_core/core/core.go
index 45bbde2..4baa198 100644
--- a/ro_core/core/core.go
+++ b/ro_core/core/core.go
@@ -107,7 +107,7 @@
 // and starts the server
 func (core *Core) startGRPCService(ctx context.Context) {
 	//	create an insecure gserver server
-	core.grpcServer = grpcserver.NewGrpcServer(core.config.GrpcHost, core.config.GrpcPort, nil, false)
+	core.grpcServer = grpcserver.NewGrpcServer(core.config.GrpcHost, core.config.GrpcPort, nil, false, nil)
 	log.Info("grpc-server-created")
 
 	core.grpcNBIAPIHandler = NewAPIHandler(core.genericMgr, core.deviceMgr, core.logicalDeviceMgr)
diff --git a/rw_core/config/config.go b/rw_core/config/config.go
index 87f26c3..bb1ace1 100644
--- a/rw_core/config/config.go
+++ b/rw_core/config/config.go
@@ -54,6 +54,8 @@
 	default_CorePairTopic             = "rwcore_1"
 	default_MaxConnectionRetries      = -1 // retries forever
 	default_ConnectionRetryInterval   = 2  // in seconds
+	default_LiveProbeInterval         = 60 // in seconds
+	default_NotLiveProbeInterval      = 60 // in seconds
 	default_ProbeHost                 = ""
 	default_ProbePort                 = 8080
 )
@@ -90,6 +92,8 @@
 	CorePairTopic             string
 	MaxConnectionRetries      int
 	ConnectionRetryInterval   int
+	LiveProbeInterval         int
+	NotLiveProbeInterval      int
 	ProbeHost                 string
 	ProbePort                 int
 }
@@ -130,6 +134,8 @@
 		CorePairTopic:             default_CorePairTopic,
 		MaxConnectionRetries:      default_MaxConnectionRetries,
 		ConnectionRetryInterval:   default_ConnectionRetryInterval,
+		LiveProbeInterval:         default_LiveProbeInterval,
+		NotLiveProbeInterval:      default_NotLiveProbeInterval,
 		ProbeHost:                 default_ProbeHost,
 		ProbePort:                 default_ProbePort,
 	}
@@ -216,9 +222,15 @@
 	help = fmt.Sprintf("The number of retries to connect to a dependent component")
 	flag.IntVar(&(cf.MaxConnectionRetries), "max_connection_retries", default_MaxConnectionRetries, help)
 
-	help = fmt.Sprintf("The number of seconds between each connection retry attempt ")
+	help = fmt.Sprintf("The number of seconds between each connection retry attempt")
 	flag.IntVar(&(cf.ConnectionRetryInterval), "connection_retry_interval", default_ConnectionRetryInterval, help)
 
+	help = fmt.Sprintf("The number of seconds between liveness probes while in a live state")
+	flag.IntVar(&(cf.LiveProbeInterval), "live_probe_interval", default_LiveProbeInterval, help)
+
+	help = fmt.Sprintf("The number of seconds between liveness probes while in a not live state")
+	flag.IntVar(&(cf.NotLiveProbeInterval), "not_live_probe_interval", default_NotLiveProbeInterval, help)
+
 	help = fmt.Sprintf("The host on which to listen to answer liveness and readiness probe queries over HTTP.")
 	flag.StringVar(&(cf.ProbeHost), "probe_host", default_ProbeHost, help)
 
diff --git a/rw_core/core/core.go b/rw_core/core/core.go
index e340a29..b74de4a 100644
--- a/rw_core/core/core.go
+++ b/rw_core/core/core.go
@@ -106,11 +106,10 @@
 		p.UpdateStatus("kv-store", probe.ServiceStatusRunning)
 	}
 
-	if err := core.waitUntilKafkaMessagingProxyIsUpOrMaxTries(ctx, core.config.MaxConnectionRetries, core.config.ConnectionRetryInterval); err != nil {
-		log.Fatal("Failure-starting-kafkaMessagingProxy")
-	}
-	if p != nil {
-		p.UpdateStatus("message-bus", probe.ServiceStatusRunning)
+	// core.kmp must be created before deviceMgr and adapterMgr, as they will make
+	// private copies of the poiner to core.kmp.
+	if err := core.initKafkaManager(ctx); err != nil {
+		log.Fatal("Failed-to-init-kafka-manager")
 	}
 
 	log.Debugw("values", log.Fields{"kmp": core.kmp})
@@ -119,9 +118,14 @@
 	core.deviceMgr.adapterMgr = core.adapterMgr
 	core.logicalDeviceMgr = newLogicalDeviceManager(core, core.deviceMgr, core.kmp, core.clusterDataProxy, core.config.DefaultCoreTimeout)
 
-	if err := core.registerAdapterRequestHandlers(ctx, core.instanceId, core.deviceMgr, core.logicalDeviceMgr, core.adapterMgr, core.clusterDataProxy, core.localDataProxy); err != nil {
-		log.Fatal("Failure-registering-adapterRequestHandler")
-	}
+	// Start the KafkaManager. This must be done after the deviceMgr, adapterMgr, and
+	// logicalDeviceMgr have been created, as once the kmp is started, it will register
+	// the above with the kmp.
+
+	go core.startKafkaManager(ctx,
+		core.config.ConnectionRetryInterval,
+		core.config.LiveProbeInterval,
+		core.config.NotLiveProbeInterval)
 
 	go core.startDeviceManager(ctx)
 	go core.startLogicalDeviceManager(ctx)
@@ -159,7 +163,7 @@
 //startGRPCService creates the grpc service handlers, registers it to the grpc server and starts the server
 func (core *Core) startGRPCService(ctx context.Context) {
 	//	create an insecure gserver server
-	core.grpcServer = grpcserver.NewGrpcServer(core.config.GrpcHost, core.config.GrpcPort, nil, false)
+	core.grpcServer = grpcserver.NewGrpcServer(core.config.GrpcHost, core.config.GrpcPort, nil, false, probe.GetProbeFromContext(ctx))
 	log.Info("grpc-server-created")
 
 	core.grpcNBIAPIHandler = NewAPIHandler(core)
@@ -193,9 +197,14 @@
 	probe.UpdateStatusFromContext(ctx, "grpc-service", probe.ServiceStatusStopped)
 }
 
-func (core *Core) waitUntilKafkaMessagingProxyIsUpOrMaxTries(ctx context.Context, maxRetries int, retryInterval int) error {
-	log.Infow("starting-kafka-messaging-proxy", log.Fields{"host": core.config.KafkaAdapterHost,
+// Initialize the kafka manager, but we will start it later
+func (core *Core) initKafkaManager(ctx context.Context) error {
+	log.Infow("initialize-kafka-manager", log.Fields{"host": core.config.KafkaAdapterHost,
 		"port": core.config.KafkaAdapterPort, "topic": core.config.CoreTopic})
+
+	probe.UpdateStatusFromContext(ctx, "message-bus", probe.ServiceStatusPreparing)
+
+	// create the proxy
 	var err error
 	if core.kmp, err = kafka.NewInterContainerProxy(
 		kafka.InterContainerHost(core.config.KafkaAdapterHost),
@@ -206,25 +215,121 @@
 		log.Errorw("fail-to-create-kafka-proxy", log.Fields{"error": err})
 		return err
 	}
-	count := 0
-	for {
-		if err = core.kmp.Start(); err != nil {
+
+	probe.UpdateStatusFromContext(ctx, "message-bus", probe.ServiceStatusPrepared)
+
+	return nil
+}
+
+/*
+ * KafkaMonitorThread
+ *
+ * Repsonsible for starting the Kafka Interadapter Proxy and monitoring its liveness
+ * state.
+ *
+ * Any producer that fails to send will cause KafkaInterContainerProxy to
+ * post a false event on its liveness channel. Any producer that succeeds in sending
+ * will cause KafkaInterContainerProxy to post a true event on its liveness
+ * channel. Group recievers also update liveness state, and a receiver will typically
+ * indicate a loss of liveness within 3-5 seconds of Kafka going down. Receivers
+ * only indicate restoration of liveness if a message is received. During normal
+ * operation, messages will be routinely produced and received, automatically
+ * indicating liveness state. These routine liveness indications are rate-limited
+ * inside sarama_client.
+ *
+ * This thread monitors the status of KafkaInterContainerProxy's liveness and pushes
+ * that state to the core's readiness probes. If no liveness event has been seen
+ * within a timeout, then the thread will make an attempt to produce a "liveness"
+ * message, which will in turn trigger a liveness event on the liveness channel, true
+ * or false depending on whether the attempt succeeded.
+ *
+ * The gRPC server in turn monitors the state of the readiness probe and will
+ * start issuing UNAVAILABLE response while the probe is not ready.
+ *
+ * startupRetryInterval -- interval between attempts to start
+ * liveProbeInterval -- interval between liveness checks when in a live state
+ * notLiveProbeInterval -- interval between liveness checks when in a notLive state
+ *
+ * liveProbeInterval and notLiveProbeInterval can be configured separately,
+ * though the current default is that both are set to 60 seconds.
+ */
+
+func (core *Core) startKafkaManager(ctx context.Context, startupRetryInterval int, liveProbeInterval int, notLiveProbeInterval int) {
+	log.Infow("starting-kafka-manager-thread", log.Fields{"host": core.config.KafkaAdapterHost,
+		"port": core.config.KafkaAdapterPort, "topic": core.config.CoreTopic})
+
+	started := false
+	for !started {
+		// If we haven't started yet, then try to start
+		log.Infow("starting-kafka-proxy", log.Fields{})
+		if err := core.kmp.Start(); err != nil {
+			// We failed to start. Delay and then try again later.
+			// Don't worry about liveness, as we can't be live until we've started.
+			probe.UpdateStatusFromContext(ctx, "message-bus", probe.ServiceStatusNotReady)
 			log.Infow("error-starting-kafka-messaging-proxy", log.Fields{"error": err})
-			if maxRetries != -1 {
-				if count >= maxRetries {
-					return err
-				}
-			}
-			count += 1
-			log.Infow("retry-starting-kafka-messaging-proxy", log.Fields{"retryCount": count, "maxRetries": maxRetries, "retryInterval": retryInterval})
-			//	Take a nap before retrying
-			time.Sleep(time.Duration(retryInterval) * time.Second)
+			time.Sleep(time.Duration(startupRetryInterval) * time.Second)
 		} else {
-			break
+			// We started. We only need to do this once.
+			// Next we'll fall through and start checking liveness.
+			log.Infow("started-kafka-proxy", log.Fields{})
+
+			// cannot do this until after the kmp is started
+			if err := core.registerAdapterRequestHandlers(ctx, core.instanceId, core.deviceMgr, core.logicalDeviceMgr, core.adapterMgr, core.clusterDataProxy, core.localDataProxy); err != nil {
+				log.Fatal("Failure-registering-adapterRequestHandler")
+			}
+
+			started = true
 		}
 	}
-	log.Info("kafka-messaging-proxy-created")
-	return nil
+
+	log.Info("started-kafka-message-proxy")
+
+	livenessChannel := core.kmp.EnableLivenessChannel(true)
+
+	log.Info("enabled-kafka-liveness-channel")
+
+	timeout := time.Duration(liveProbeInterval) * time.Second
+	for {
+		timeoutTimer := time.NewTimer(timeout)
+		select {
+		case liveness := <-livenessChannel:
+			log.Infow("kafka-manager-thread-liveness-event", log.Fields{"liveness": liveness})
+			// there was a state change in Kafka liveness
+			if !liveness {
+				probe.UpdateStatusFromContext(ctx, "message-bus", probe.ServiceStatusNotReady)
+
+				if core.grpcServer != nil {
+					log.Info("kafka-manager-thread-set-server-notready")
+				}
+
+				// retry frequently while life is bad
+				timeout = time.Duration(notLiveProbeInterval) * time.Second
+			} else {
+				probe.UpdateStatusFromContext(ctx, "message-bus", probe.ServiceStatusRunning)
+
+				if core.grpcServer != nil {
+					log.Info("kafka-manager-thread-set-server-ready")
+				}
+
+				// retry infrequently while life is good
+				timeout = time.Duration(liveProbeInterval) * time.Second
+			}
+			if !timeoutTimer.Stop() {
+				<-timeoutTimer.C
+			}
+		case <-timeoutTimer.C:
+			log.Info("kafka-proxy-liveness-recheck")
+			// send the liveness probe in a goroutine; we don't want to deadlock ourselves as
+			// the liveness probe may wait (and block) writing to our channel.
+			go func() {
+				err := core.kmp.SendLiveness()
+				if err != nil {
+					// Catch possible error case if sending liveness after Sarama has been stopped.
+					log.Warnw("error-kafka-send-liveness", log.Fields{"error": err})
+				}
+			}()
+		}
+	}
 }
 
 // waitUntilKVStoreReachableOrMaxTries will wait until it can connect to a KV store or until maxtries has been reached
diff --git a/rw_core/main.go b/rw_core/main.go
index 847f386..faddd57 100644
--- a/rw_core/main.go
+++ b/rw_core/main.go
@@ -65,7 +65,7 @@
 	return nil, errors.New("unsupported-kv-store")
 }
 
-func newKafkaClient(clientType string, host string, port int, instanceID string) (kafka.Client, error) {
+func newKafkaClient(clientType string, host string, port int, instanceID string, livenessChannelInterval time.Duration) (kafka.Client, error) {
 
 	log.Infow("kafka-client-type", log.Fields{"client": clientType})
 	switch clientType {
@@ -82,7 +82,9 @@
 			kafka.ConsumerGroupPrefix(instanceID),
 			kafka.AutoCreateTopic(true),
 			kafka.ProducerFlushFrequency(5),
-			kafka.ProducerRetryBackoff(time.Millisecond*30)), nil
+			kafka.ProducerRetryBackoff(time.Millisecond*30),
+			kafka.LivenessChannelInterval(livenessChannelInterval),
+		), nil
 	}
 	return nil, errors.New("unsupported-client-type")
 }
@@ -137,7 +139,11 @@
 	}
 
 	// Setup Kafka Client
-	if rw.kafkaClient, err = newKafkaClient("sarama", rw.config.KafkaAdapterHost, rw.config.KafkaAdapterPort, instanceId); err != nil {
+	if rw.kafkaClient, err = newKafkaClient("sarama",
+		rw.config.KafkaAdapterHost,
+		rw.config.KafkaAdapterPort,
+		instanceId,
+		time.Duration(rw.config.LiveProbeInterval)*time.Second/2); err != nil {
 		log.Fatal("Unsupported-kafka-client")
 	}
 
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/db/kvstore/etcdclient.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/db/kvstore/etcdclient.go
index e8bc92c..3ae767c 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/db/kvstore/etcdclient.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/db/kvstore/etcdclient.go
@@ -38,6 +38,9 @@
 	lockToMutexLock  sync.Mutex
 }
 
+// Connection Timeout in Seconds
+var connTimeout int = 2
+
 // NewEtcdClient returns a new client for the Etcd KV store
 func NewEtcdClient(addr string, timeout int) (*EtcdClient, error) {
 	duration := GetDuration(timeout)
@@ -188,8 +191,13 @@
 		return nil, fmt.Errorf("unexpected-type%T", value)
 	}
 
+	duration := GetDuration(connTimeout)
+
 	// Create a lease
-	resp, err := c.ectdAPI.Grant(context.Background(), ttl)
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
+	resp, err := c.ectdAPI.Grant(ctx, ttl)
 	if err != nil {
 		log.Error(err)
 		return nil, err
@@ -255,8 +263,12 @@
 func (c *EtcdClient) ReleaseAllReservations() error {
 	c.writeLock.Lock()
 	defer c.writeLock.Unlock()
+	duration := GetDuration(connTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
 	for key, leaseID := range c.keyReservations {
-		_, err := c.ectdAPI.Revoke(context.Background(), *leaseID)
+		_, err := c.ectdAPI.Revoke(ctx, *leaseID)
 		if err != nil {
 			log.Errorw("cannot-release-reservation", log.Fields{"key": key, "error": err})
 			return err
@@ -277,8 +289,12 @@
 	if leaseID, ok = c.keyReservations[key]; !ok {
 		return nil
 	}
+	duration := GetDuration(connTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
 	if leaseID != nil {
-		_, err := c.ectdAPI.Revoke(context.Background(), *leaseID)
+		_, err := c.ectdAPI.Revoke(ctx, *leaseID)
 		if err != nil {
 			log.Error(err)
 			return err
@@ -299,9 +315,12 @@
 	if leaseID, ok = c.keyReservations[key]; !ok {
 		return errors.New("key-not-reserved")
 	}
+	duration := GetDuration(connTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
 
 	if leaseID != nil {
-		_, err := c.ectdAPI.KeepAliveOnce(context.Background(), *leaseID)
+		_, err := c.ectdAPI.KeepAliveOnce(ctx, *leaseID)
 		if err != nil {
 			log.Errorw("lease-may-have-expired", log.Fields{"error": err})
 			return err
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/grpc/server.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/grpc/server.go
index 4c95aa1..7796b83 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/grpc/server.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/grpc/server.go
@@ -20,7 +20,9 @@
 	"fmt"
 	"github.com/opencord/voltha-lib-go/v2/pkg/log"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/status"
 	"net"
 )
 
@@ -52,12 +54,19 @@
 	s.server.Start(ctx)
 */
 
+// Interface allows probes to be attached to server
+// A probe must support the IsReady() method
+type ReadyProbe interface {
+	IsReady() bool
+}
+
 type GrpcServer struct {
 	gs       *grpc.Server
 	address  string
 	port     int
 	secure   bool
 	services []func(*grpc.Server)
+	probe    ReadyProbe // optional
 
 	*GrpcSecurity
 }
@@ -70,12 +79,14 @@
 	port int,
 	certs *GrpcSecurity,
 	secure bool,
+	probe ReadyProbe,
 ) *GrpcServer {
 	server := &GrpcServer{
 		address:      address,
 		port:         port,
 		secure:       secure,
 		GrpcSecurity: certs,
+		probe:        probe,
 	}
 	return server
 }
@@ -97,11 +108,12 @@
 		if err != nil {
 			log.Fatalf("could not load TLS keys: %s", err)
 		}
-		s.gs = grpc.NewServer(grpc.Creds(creds))
+		s.gs = grpc.NewServer(grpc.Creds(creds),
+			withServerUnaryInterceptor(s))
 
 	} else {
 		log.Info("starting-insecure-grpc-server")
-		s.gs = grpc.NewServer()
+		s.gs = grpc.NewServer(withServerUnaryInterceptor(s))
 	}
 
 	// Register all required services
@@ -114,6 +126,36 @@
 	}
 }
 
+func withServerUnaryInterceptor(s *GrpcServer) grpc.ServerOption {
+	return grpc.UnaryInterceptor(mkServerInterceptor(s))
+}
+
+// Make a serverInterceptor for the given GrpcServer
+// This interceptor will check whether there is an attached probe,
+// and if that probe indicates NotReady, then an UNAVAILABLE
+// response will be returned.
+func mkServerInterceptor(s *GrpcServer) func(ctx context.Context,
+	req interface{},
+	info *grpc.UnaryServerInfo,
+	handler grpc.UnaryHandler) (interface{}, error) {
+
+	return func(ctx context.Context,
+		req interface{},
+		info *grpc.UnaryServerInfo,
+		handler grpc.UnaryHandler) (interface{}, error) {
+
+		if (s.probe != nil) && (!s.probe.IsReady()) {
+			log.Warnf("Grpc request received while not ready %v", req)
+			return nil, status.Error(codes.Unavailable, "system is not ready")
+		}
+
+		// Calls the handler
+		h, err := handler(ctx, req)
+
+		return h, err
+	}
+}
+
 /*
 Stop servicing GRPC requests
 */
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/client.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/client.go
index 007aa74..488bf9f 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/client.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/client.go
@@ -55,6 +55,7 @@
 	DefaultNumberReplicas           = 1
 	DefaultAutoCreateTopic          = false
 	DefaultMetadataMaxRetry         = 3
+	DefaultLivenessChannelInterval  = time.Second * 30
 )
 
 // MsgClient represents the set of APIs  a Kafka MsgClient must implement
@@ -66,4 +67,6 @@
 	Subscribe(topic *Topic, kvArgs ...*KVArg) (<-chan *ca.InterContainerMessage, error)
 	UnSubscribe(topic *Topic, ch <-chan *ca.InterContainerMessage) error
 	Send(msg interface{}, topic *Topic, keys ...string) error
+	SendLiveness() error
+	EnableLivenessChannel(enable bool) chan bool
 }
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/kafka_inter_container_library.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/kafka_inter_container_library.go
index c576bc6..3326191 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/kafka_inter_container_library.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/kafka_inter_container_library.go
@@ -764,6 +764,14 @@
 	return nil
 }
 
+func (kp *InterContainerProxy) EnableLivenessChannel(enable bool) chan bool {
+	return kp.kafkaClient.EnableLivenessChannel(enable)
+}
+
+func (kp *InterContainerProxy) SendLiveness() error {
+	return kp.kafkaClient.SendLiveness()
+}
+
 //formatRequest formats a request to send over kafka and returns an InterContainerMessage message on success
 //or an error on failure
 func encodeRequest(rpc string, toTopic *Topic, replyTopic *Topic, key string, kvArgs ...*KVArg) (*ic.InterContainerMessage, error) {
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/sarama_client.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/sarama_client.go
index fc75026..a251c56 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/sarama_client.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/kafka/sarama_client.go
@@ -74,6 +74,11 @@
 	topicLockMap                  map[string]*sync.RWMutex
 	lockOfTopicLockMap            sync.RWMutex
 	metadataMaxRetry              int
+	alive                         bool
+	liveness                      chan bool
+	livenessChannelInterval       time.Duration
+	lastLivenessTime              time.Time
+	started                       bool
 }
 
 type SaramaClientOption func(*SaramaClient)
@@ -186,6 +191,12 @@
 	}
 }
 
+func LivenessChannelInterval(opt time.Duration) SaramaClientOption {
+	return func(args *SaramaClient) {
+		args.livenessChannelInterval = opt
+	}
+}
+
 func NewSaramaClient(opts ...SaramaClientOption) *SaramaClient {
 	client := &SaramaClient{
 		KafkaHost: DefaultKafkaHost,
@@ -205,6 +216,7 @@
 	client.numReplicas = DefaultNumberReplicas
 	client.autoCreateTopic = DefaultAutoCreateTopic
 	client.metadataMaxRetry = DefaultMetadataMaxRetry
+	client.livenessChannelInterval = DefaultLivenessChannelInterval
 
 	for _, option := range opts {
 		option(client)
@@ -216,6 +228,10 @@
 	client.topicLockMap = make(map[string]*sync.RWMutex)
 	client.lockOfTopicLockMap = sync.RWMutex{}
 	client.lockOfGroupConsumers = sync.RWMutex{}
+
+	// alive until proven otherwise
+	client.alive = true
+
 	return client
 }
 
@@ -259,12 +275,16 @@
 
 	log.Info("kafka-sarama-client-started")
 
+	sc.started = true
+
 	return nil
 }
 
 func (sc *SaramaClient) Stop() {
 	log.Info("stopping-sarama-client")
 
+	sc.started = false
+
 	//Send a message over the done channel to close all long running routines
 	sc.doneCh <- 1
 
@@ -438,6 +458,30 @@
 	return err
 }
 
+func (sc *SaramaClient) updateLiveness(alive bool) {
+	// Post a consistent stream of liveness data to the channel,
+	// so that in a live state, the core does not timeout and
+	// send a forced liveness message. Production of liveness
+	// events to the channel is rate-limited by livenessChannelInterval.
+	if sc.liveness != nil {
+		if sc.alive != alive {
+			log.Info("update-liveness-channel-because-change")
+			sc.liveness <- alive
+			sc.lastLivenessTime = time.Now()
+		} else if time.Now().Sub(sc.lastLivenessTime) > sc.livenessChannelInterval {
+			log.Info("update-liveness-channel-because-interval")
+			sc.liveness <- alive
+			sc.lastLivenessTime = time.Now()
+		}
+	}
+
+	// Only emit a log message when the state changes
+	if sc.alive != alive {
+		log.Info("set-client-alive", log.Fields{"alive": alive})
+		sc.alive = alive
+	}
+}
+
 // send formats and sends the request onto the kafka messaging bus.
 func (sc *SaramaClient) Send(msg interface{}, topic *Topic, keys ...string) error {
 
@@ -474,8 +518,68 @@
 	select {
 	case ok := <-sc.producer.Successes():
 		log.Debugw("message-sent", log.Fields{"status": ok.Topic})
+		sc.updateLiveness(true)
 	case notOk := <-sc.producer.Errors():
 		log.Debugw("error-sending", log.Fields{"status": notOk})
+		if strings.Contains(notOk.Error(), "Failed to produce") {
+			sc.updateLiveness(false)
+		}
+		return notOk
+	}
+	return nil
+}
+
+// Enable the liveness monitor channel. This channel will report
+// a "true" or "false" on every publish, which indicates whether
+// or not the channel is still live. This channel is then picked up
+// by the service (i.e. rw_core / ro_core) to update readiness status
+// and/or take other actions.
+func (sc *SaramaClient) EnableLivenessChannel(enable bool) chan bool {
+	log.Infow("kafka-enable-liveness-channel", log.Fields{"enable": enable})
+	if enable {
+		if sc.liveness == nil {
+			log.Info("kafka-create-liveness-channel")
+			// At least 1, so we can immediately post to it without blocking
+			// Setting a bigger number (10) allows the monitor to fall behind
+			// without blocking others. The monitor shouldn't really fall
+			// behind...
+			sc.liveness = make(chan bool, 10)
+			// post intial state to the channel
+			sc.liveness <- sc.alive
+		}
+	} else {
+		// TODO: Think about whether we need the ability to turn off
+		// liveness monitoring
+		panic("Turning off liveness reporting is not supported")
+	}
+	return sc.liveness
+}
+
+// send an empty message on the liveness channel to check whether connectivity has
+// been restored.
+func (sc *SaramaClient) SendLiveness() error {
+	if !sc.started {
+		return fmt.Errorf("SendLiveness() called while not started")
+	}
+
+	kafkaMsg := &sarama.ProducerMessage{
+		Topic: "_liveness_test",
+		Value: sarama.StringEncoder(time.Now().Format(time.RFC3339)), // for debugging / informative use
+	}
+
+	// Send message to kafka
+	sc.producer.Input() <- kafkaMsg
+	// Wait for result
+	// TODO: Use a lock or a different mechanism to ensure the response received corresponds to the message sent.
+	select {
+	case ok := <-sc.producer.Successes():
+		log.Debugw("liveness-message-sent", log.Fields{"status": ok.Topic})
+		sc.updateLiveness(true)
+	case notOk := <-sc.producer.Errors():
+		log.Debugw("liveness-error-sending", log.Fields{"status": notOk})
+		if strings.Contains(notOk.Error(), "Failed to produce") {
+			sc.updateLiveness(false)
+		}
 		return notOk
 	}
 	return nil
@@ -713,7 +817,8 @@
 	config := scc.NewConfig()
 	config.ClientID = uuid.New().String()
 	config.Group.Mode = scc.ConsumerModeMultiplex
-	//config.Consumer.Return.Errors = true
+	config.Consumer.Group.Heartbeat.Interval, _ = time.ParseDuration("1s")
+	config.Consumer.Return.Errors = true
 	//config.Group.Return.Notifications = false
 	//config.Consumer.MaxWaitTime = time.Duration(DefaultConsumerMaxwait) * time.Millisecond
 	//config.Consumer.MaxProcessingTime = time.Duration(DefaultMaxProcessingTime) * time.Millisecond
@@ -791,16 +896,20 @@
 		select {
 		case err, ok := <-consumer.Errors():
 			if ok {
+				sc.updateLiveness(false)
 				log.Warnw("group-consumers-error", log.Fields{"topic": topic.Name, "error": err})
 			} else {
+				log.Warnw("group-consumers-closed-err", log.Fields{"topic": topic.Name})
 				// channel is closed
 				break startloop
 			}
 		case msg, ok := <-consumer.Messages():
 			if !ok {
+				log.Warnw("group-consumers-closed-msg", log.Fields{"topic": topic.Name})
 				// Channel closed
 				break startloop
 			}
+			sc.updateLiveness(true)
 			log.Debugw("message-received", log.Fields{"timestamp": msg.Timestamp, "receivedTopic": msg.Topic})
 			msgBody := msg.Value
 			icm := &ic.InterContainerMessage{}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/probe/probe.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/probe/probe.go
index 9823566..7e6dbf9 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/probe/probe.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/probe/probe.go
@@ -47,6 +47,9 @@
 
 	// ServiceStatusFailed service has stopped because of an error
 	ServiceStatusFailed
+
+	// ServiceStatusNotReady service has started but is unable to accept requests
+	ServiceStatusNotReady
 )
 
 const (
@@ -71,6 +74,8 @@
 		return "Stopped"
 	case ServiceStatusFailed:
 		return "Failed"
+	case ServiceStatusNotReady:
+		return "NotReady"
 	}
 }
 
@@ -137,6 +142,13 @@
 	if p.status == nil {
 		p.status = make(map[string]ServiceStatus)
 	}
+
+	// if status hasn't changed, avoid doing useless work
+	existingStatus, ok := p.status[name]
+	if ok && (existingStatus == status) {
+		return
+	}
+
 	p.status[name] = status
 	if p.readyFunc != nil {
 		p.isReady = p.readyFunc(p.status)
@@ -158,17 +170,41 @@
 		})
 }
 
+func (p *Probe) GetStatus(name string) ServiceStatus {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
+	if p.status == nil {
+		p.status = make(map[string]ServiceStatus)
+	}
+
+	currentStatus, ok := p.status[name]
+	if ok {
+		return currentStatus
+	}
+
+	return ServiceStatusUnknown
+}
+
+func GetProbeFromContext(ctx context.Context) *Probe {
+	if ctx != nil {
+		if value := ctx.Value(ProbeContextKey); value != nil {
+			if p, ok := value.(*Probe); ok {
+				return p
+			}
+		}
+	}
+	return nil
+}
+
 // UpdateStatusFromContext a convenience function to pull the Probe reference from the
 // Context, if it exists, and then calling UpdateStatus on that Probe reference. If Context
 // is nil or if a Probe reference is not associated with the ProbeContextKey then nothing
 // happens
 func UpdateStatusFromContext(ctx context.Context, name string, status ServiceStatus) {
-	if ctx != nil {
-		if value := ctx.Value(ProbeContextKey); value != nil {
-			if p, ok := value.(*Probe); ok {
-				p.UpdateStatus(name, status)
-			}
-		}
+	p := GetProbeFromContext(ctx)
+	if p != nil {
+		p.UpdateStatus(name, status)
 	}
 }
 
@@ -225,6 +261,10 @@
 	log.Fatal(s.ListenAndServe())
 }
 
+func (p *Probe) IsReady() bool {
+	return p.isReady
+}
+
 // defaultReadyFunc if all services are running then ready, else not
 func defaultReadyFunc(services map[string]ServiceStatus) bool {
 	if len(services) == 0 {
diff --git a/vendor/golang.org/x/sys/unix/mkasm_darwin.go b/vendor/golang.org/x/sys/unix/mkasm_darwin.go
new file mode 100644
index 0000000..4548b99
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mkasm_darwin.go
@@ -0,0 +1,61 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// mkasm_darwin.go generates assembly trampolines to call libSystem routines from Go.
+//This program must be run after mksyscall.go.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+)
+
+func main() {
+	in1, err := ioutil.ReadFile("syscall_darwin.go")
+	if err != nil {
+		log.Fatalf("can't open syscall_darwin.go: %s", err)
+	}
+	arch := os.Args[1]
+	in2, err := ioutil.ReadFile(fmt.Sprintf("syscall_darwin_%s.go", arch))
+	if err != nil {
+		log.Fatalf("can't open syscall_darwin_%s.go: %s", arch, err)
+	}
+	in3, err := ioutil.ReadFile(fmt.Sprintf("zsyscall_darwin_%s.go", arch))
+	if err != nil {
+		log.Fatalf("can't open zsyscall_darwin_%s.go: %s", arch, err)
+	}
+	in := string(in1) + string(in2) + string(in3)
+
+	trampolines := map[string]bool{}
+
+	var out bytes.Buffer
+
+	fmt.Fprintf(&out, "// go run mkasm_darwin.go %s\n", strings.Join(os.Args[1:], " "))
+	fmt.Fprintf(&out, "// Code generated by the command above; DO NOT EDIT.\n")
+	fmt.Fprintf(&out, "\n")
+	fmt.Fprintf(&out, "// +build go1.12\n")
+	fmt.Fprintf(&out, "\n")
+	fmt.Fprintf(&out, "#include \"textflag.h\"\n")
+	for _, line := range strings.Split(in, "\n") {
+		if !strings.HasPrefix(line, "func ") || !strings.HasSuffix(line, "_trampoline()") {
+			continue
+		}
+		fn := line[5 : len(line)-13]
+		if !trampolines[fn] {
+			trampolines[fn] = true
+			fmt.Fprintf(&out, "TEXT ·%s_trampoline(SB),NOSPLIT,$0-0\n", fn)
+			fmt.Fprintf(&out, "\tJMP\t%s(SB)\n", fn)
+		}
+	}
+	err = ioutil.WriteFile(fmt.Sprintf("zsyscall_darwin_%s.s", arch), out.Bytes(), 0644)
+	if err != nil {
+		log.Fatalf("can't write zsyscall_darwin_%s.s: %s", arch, err)
+	}
+}
diff --git a/vendor/golang.org/x/sys/unix/mkpost.go b/vendor/golang.org/x/sys/unix/mkpost.go
new file mode 100644
index 0000000..eb43320
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mkpost.go
@@ -0,0 +1,122 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// mkpost processes the output of cgo -godefs to
+// modify the generated types. It is used to clean up
+// the sys API in an architecture specific manner.
+//
+// mkpost is run after cgo -godefs; see README.md.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"log"
+	"os"
+	"regexp"
+)
+
+func main() {
+	// Get the OS and architecture (using GOARCH_TARGET if it exists)
+	goos := os.Getenv("GOOS")
+	goarch := os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check that we are using the Docker-based build system if we should be.
+	if goos == "linux" {
+		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
+			os.Stderr.WriteString("In the Docker-based build system, mkpost should not be called directly.\n")
+			os.Stderr.WriteString("See README.md\n")
+			os.Exit(1)
+		}
+	}
+
+	b, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if goos == "aix" {
+		// Replace type of Atim, Mtim and Ctim by Timespec in Stat_t
+		// to avoid having both StTimespec and Timespec.
+		sttimespec := regexp.MustCompile(`_Ctype_struct_st_timespec`)
+		b = sttimespec.ReplaceAll(b, []byte("Timespec"))
+	}
+
+	// Intentionally export __val fields in Fsid and Sigset_t
+	valRegex := regexp.MustCompile(`type (Fsid|Sigset_t) struct {(\s+)X__(bits|val)(\s+\S+\s+)}`)
+	b = valRegex.ReplaceAll(b, []byte("type $1 struct {${2}Val$4}"))
+
+	// Intentionally export __fds_bits field in FdSet
+	fdSetRegex := regexp.MustCompile(`type (FdSet) struct {(\s+)X__fds_bits(\s+\S+\s+)}`)
+	b = fdSetRegex.ReplaceAll(b, []byte("type $1 struct {${2}Bits$3}"))
+
+	// If we have empty Ptrace structs, we should delete them. Only s390x emits
+	// nonempty Ptrace structs.
+	ptraceRexexp := regexp.MustCompile(`type Ptrace((Psw|Fpregs|Per) struct {\s*})`)
+	b = ptraceRexexp.ReplaceAll(b, nil)
+
+	// Replace the control_regs union with a blank identifier for now.
+	controlRegsRegex := regexp.MustCompile(`(Control_regs)\s+\[0\]uint64`)
+	b = controlRegsRegex.ReplaceAll(b, []byte("_ [0]uint64"))
+
+	// Remove fields that are added by glibc
+	// Note that this is unstable as the identifers are private.
+	removeFieldsRegex := regexp.MustCompile(`X__glibc\S*`)
+	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Convert [65]int8 to [65]byte in Utsname members to simplify
+	// conversion to string; see golang.org/issue/20753
+	convertUtsnameRegex := regexp.MustCompile(`((Sys|Node|Domain)name|Release|Version|Machine)(\s+)\[(\d+)\]u?int8`)
+	b = convertUtsnameRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
+
+	// Convert [1024]int8 to [1024]byte in Ptmget members
+	convertPtmget := regexp.MustCompile(`([SC]n)(\s+)\[(\d+)\]u?int8`)
+	b = convertPtmget.ReplaceAll(b, []byte("$1[$3]byte"))
+
+	// Remove spare fields (e.g. in Statx_t)
+	spareFieldsRegex := regexp.MustCompile(`X__spare\S*`)
+	b = spareFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove cgo padding fields
+	removePaddingFieldsRegex := regexp.MustCompile(`Pad_cgo_\d+`)
+	b = removePaddingFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove padding, hidden, or unused fields
+	removeFieldsRegex = regexp.MustCompile(`\b(X_\S+|Padding)`)
+	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove the first line of warning from cgo
+	b = b[bytes.IndexByte(b, '\n')+1:]
+	// Modify the command in the header to include:
+	//  mkpost, our own warning, and a build tag.
+	replacement := fmt.Sprintf(`$1 | go run mkpost.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s,%s`, goarch, goos)
+	cgoCommandRegex := regexp.MustCompile(`(cgo -godefs .*)`)
+	b = cgoCommandRegex.ReplaceAll(b, []byte(replacement))
+
+	// Rename Stat_t time fields
+	if goos == "freebsd" && goarch == "386" {
+		// Hide Stat_t.[AMCB]tim_ext fields
+		renameStatTimeExtFieldsRegex := regexp.MustCompile(`[AMCB]tim_ext`)
+		b = renameStatTimeExtFieldsRegex.ReplaceAll(b, []byte("_"))
+	}
+	renameStatTimeFieldsRegex := regexp.MustCompile(`([AMCB])(?:irth)?time?(?:spec)?\s+(Timespec|StTimespec)`)
+	b = renameStatTimeFieldsRegex.ReplaceAll(b, []byte("${1}tim ${2}"))
+
+	// gofmt
+	b, err = format.Source(b)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	os.Stdout.Write(b)
+}
diff --git a/vendor/golang.org/x/sys/unix/mksyscall.go b/vendor/golang.org/x/sys/unix/mksyscall.go
new file mode 100644
index 0000000..e4af942
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksyscall.go
@@ -0,0 +1,407 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_darwin.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named errno.
+
+A line beginning with //sysnb is like //sys, except that the
+goroutine will not be suspended during the execution of the system
+call.  This must only be used for system calls which can never
+block, as otherwise the system call could cause all goroutines to
+hang.
+*/
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32       = flag.Bool("b32", false, "32bit big-endian")
+	l32       = flag.Bool("l32", false, "32bit little-endian")
+	plan9     = flag.Bool("plan9", false, "plan9")
+	openbsd   = flag.Bool("openbsd", false, "openbsd")
+	netbsd    = flag.Bool("netbsd", false, "netbsd")
+	dragonfly = flag.Bool("dragonfly", false, "dragonfly")
+	arm       = flag.Bool("arm", false, "arm") // 64-bit value should use (even, odd)-pair
+	tags      = flag.String("tags", "", "build tags")
+	filename  = flag.String("output", "", "output file name (standard output if omitted)")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	// Get the OS and architecture (using GOARCH_TARGET if it exists)
+	goos := os.Getenv("GOOS")
+	if goos == "" {
+		fmt.Fprintln(os.Stderr, "GOOS not defined in environment")
+		os.Exit(1)
+	}
+	goarch := os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+
+	// Check that we are using the Docker-based build system if we should
+	if goos == "linux" {
+		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
+			fmt.Fprintf(os.Stderr, "In the Docker-based build system, mksyscall should not be called directly.\n")
+			fmt.Fprintf(os.Stderr, "See README.md\n")
+			os.Exit(1)
+		}
+	}
+
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	libc := false
+	if goos == "darwin" && strings.Contains(buildTags(), ",go1.12") {
+		libc = true
+	}
+	trampolines := map[string]bool{}
+
+	text := ""
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, errno error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*((?i)SYS_[A-Z0-9_]+))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, sysname := f[2], f[3], f[4], f[5]
+
+			// ClockGettime doesn't have a syscall number on Darwin, only generate libc wrappers.
+			if goos == "darwin" && !libc && funct == "ClockGettime" {
+				continue
+			}
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// Go function header.
+			outDecl := ""
+			if len(out) > 0 {
+				outDecl = fmt.Sprintf(" (%s)", strings.Join(out, ", "))
+			}
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outDecl)
+
+			// Check if err return available
+			errvar := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+					break
+				}
+			}
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
+					text += fmt.Sprintf("\t_p%d, %s = BytePtrFromString(%s)\n", n, errvar, p.Name)
+					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
+					text += fmt.Sprintf("\t_p%d, _ = BytePtrFromString(%s)\n", n, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass dummy pointer in that case.
+					// Used to pass nil, but some OSes or simulators reject write(fd, nil, 0).
+					text += fmt.Sprintf("\tvar _p%d unsafe.Pointer\n", n)
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = unsafe.Pointer(&%s[0])\n\t}", p.Name, n, p.Name)
+					text += fmt.Sprintf(" else {\n\t\t_p%d = unsafe.Pointer(&_zero)\n\t}\n", n)
+					args = append(args, fmt.Sprintf("uintptr(_p%d)", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
+					n++
+				} else if p.Type == "int64" && (*openbsd || *netbsd) {
+					args = append(args, "0")
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else if endianness == "little-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+					}
+				} else if p.Type == "int64" && *dragonfly {
+					if regexp.MustCompile(`^(?i)extp(read|write)`).FindStringSubmatch(funct) == nil {
+						args = append(args, "0")
+					}
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else if endianness == "little-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+					}
+				} else if (p.Type == "int64" || p.Type == "uint64") && endianness != "" {
+					if len(args)%2 == 1 && *arm {
+						// arm abi specifies 64-bit argument uses
+						// (even, odd) pair
+						args = append(args, "0")
+					}
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+				} else {
+					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+				}
+			}
+
+			// Determine which form to use; pad args with zeros.
+			asm := "Syscall"
+			if nonblock != nil {
+				if errvar == "" && goos == "linux" {
+					asm = "RawSyscallNoError"
+				} else {
+					asm = "RawSyscall"
+				}
+			} else {
+				if errvar == "" && goos == "linux" {
+					asm = "SyscallNoError"
+				}
+			}
+			if len(args) <= 3 {
+				for len(args) < 3 {
+					args = append(args, "0")
+				}
+			} else if len(args) <= 6 {
+				asm += "6"
+				for len(args) < 6 {
+					args = append(args, "0")
+				}
+			} else if len(args) <= 9 {
+				asm += "9"
+				for len(args) < 9 {
+					args = append(args, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s:%s too many arguments to system call\n", path, funct)
+			}
+
+			// System call number.
+			if sysname == "" {
+				sysname = "SYS_" + funct
+				sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+				sysname = strings.ToUpper(sysname)
+			}
+
+			var libcFn string
+			if libc {
+				asm = "syscall_" + strings.ToLower(asm[:1]) + asm[1:] // internal syscall call
+				sysname = strings.TrimPrefix(sysname, "SYS_")         // remove SYS_
+				sysname = strings.ToLower(sysname)                    // lowercase
+				if sysname == "getdirentries64" {
+					// Special case - libSystem name and
+					// raw syscall name don't match.
+					sysname = "__getdirentries64"
+				}
+				libcFn = sysname
+				sysname = "funcPC(libc_" + sysname + "_trampoline)"
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := fmt.Sprintf("%s(%s, %s)", asm, sysname, arglist)
+
+			// Assign return values.
+			body := ""
+			ret := []string{"_", "_", "_"}
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" && !*plan9 {
+					reg = "e1"
+					ret[2] = reg
+					doErrno = true
+				} else if p.Name == "err" && *plan9 {
+					ret[0] = "r0"
+					ret[2] = "e1"
+					break
+				} else {
+					reg = fmt.Sprintf("r%d", i)
+					ret[i] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%s != 0", reg)
+				}
+				if p.Type == "int64" && endianness != "" {
+					// 64-bit number in r1:r0 or r0:r1.
+					if i+2 > len(out) {
+						fmt.Fprintf(os.Stderr, "%s:%s not enough registers for int64 return\n", path, funct)
+					}
+					if endianness == "big-endian" {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
+					} else {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
+					}
+					ret[i] = fmt.Sprintf("r%d", i)
+					ret[i+1] = fmt.Sprintf("r%d", i+1)
+				}
+				if reg != "e1" || *plan9 {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
+				text += fmt.Sprintf("\t%s\n", call)
+			} else {
+				if errvar == "" && goos == "linux" {
+					// raw syscall without error on Linux, see golang.org/issue/22924
+					text += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], call)
+				} else {
+					text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
+				}
+			}
+			text += body
+
+			if *plan9 && ret[2] == "e1" {
+				text += "\tif int32(r0) == -1 {\n"
+				text += "\t\terr = e1\n"
+				text += "\t}\n"
+			} else if doErrno {
+				text += "\tif e1 != 0 {\n"
+				text += "\t\terr = errnoErr(e1)\n"
+				text += "\t}\n"
+			}
+			text += "\treturn\n"
+			text += "}\n\n"
+
+			if libc && !trampolines[libcFn] {
+				// some system calls share a trampoline, like read and readlen.
+				trampolines[libcFn] = true
+				// Declare assembly trampoline.
+				text += fmt.Sprintf("func libc_%s_trampoline()\n", libcFn)
+				// Assembly trampoline calls the libc_* function, which this magic
+				// redirects to use the function from libSystem.
+				text += fmt.Sprintf("//go:linkname libc_%s libc_%s\n", libcFn, libcFn)
+				text += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"/usr/lib/libSystem.B.dylib\"\n", libcFn, libcFn)
+				text += "\n"
+			}
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var _ syscall.Errno
+
+%s
+`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go
new file mode 100644
index 0000000..3be3cdf
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go
@@ -0,0 +1,415 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_aix.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+*/
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	aix  = flag.Bool("aix", false, "aix")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_aix_ppc.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	text := ""
+	cExtern := "/*\n#include <stdint.h>\n#include <stddef.h>\n"
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// Check if value return, err return available
+			errvar := ""
+			retvar := ""
+			rettype := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+				} else {
+					retvar = p.Name
+					rettype = p.Type
+				}
+			}
+
+			// System call name.
+			if sysname == "" {
+				sysname = funct
+			}
+			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			cRettype := ""
+			if rettype == "unsafe.Pointer" {
+				cRettype = "uintptr_t"
+			} else if rettype == "uintptr" {
+				cRettype = "uintptr_t"
+			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
+				cRettype = "uintptr_t"
+			} else if rettype == "int" {
+				cRettype = "int"
+			} else if rettype == "int32" {
+				cRettype = "int"
+			} else if rettype == "int64" {
+				cRettype = "long long"
+			} else if rettype == "uint32" {
+				cRettype = "unsigned int"
+			} else if rettype == "uint64" {
+				cRettype = "unsigned long long"
+			} else {
+				cRettype = "int"
+			}
+			if sysname == "exit" {
+				cRettype = "void"
+			}
+
+			// Change p.Types to c
+			var cIn []string
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "string" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t", "size_t")
+				} else if p.Type == "unsafe.Pointer" {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "uintptr" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "int" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int32" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int64" {
+					cIn = append(cIn, "long long")
+				} else if p.Type == "uint32" {
+					cIn = append(cIn, "unsigned int")
+				} else if p.Type == "uint64" {
+					cIn = append(cIn, "unsigned long long")
+				} else {
+					cIn = append(cIn, "int")
+				}
+			}
+
+			if funct != "fcntl" && funct != "FcntlInt" && funct != "readlen" && funct != "writelen" {
+				if sysname == "select" {
+					// select is a keyword of Go. Its name is
+					// changed to c_select.
+					cExtern += "#define c_select select\n"
+				}
+				// Imports of system calls from libc
+				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
+				cIn := strings.Join(cIn, ", ")
+				cExtern += fmt.Sprintf("(%s);\n", cIn)
+			}
+
+			// So file name.
+			if *aix {
+				if modname == "" {
+					modname = "libc.a/shr_64.o"
+				} else {
+					fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
+					os.Exit(1)
+				}
+			}
+
+			strconvfunc := "C.CString"
+
+			// Go function header.
+			if outps != "" {
+				outps = fmt.Sprintf(" (%s)", outps)
+			}
+			if text != "" {
+				text += "\n"
+			}
+
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			argN := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "C.uintptr_t(uintptr(unsafe.Pointer("+p.Name+")))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					text += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(unsafe.Pointer(_p%d)))", n))
+					n++
+					text += fmt.Sprintf("\tvar _p%d int\n", n)
+					text += fmt.Sprintf("\t_p%d = len(%s)\n", n, p.Name)
+					args = append(args, fmt.Sprintf("C.size_t(_p%d)", n))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+					n++
+				} else if p.Type == "bool" {
+					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
+					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
+					args = append(args, fmt.Sprintf("_p%d", n))
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
+				} else if p.Type == "unsafe.Pointer" {
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
+				} else if p.Type == "int" {
+					if (argN == 2) && ((funct == "readlen") || (funct == "writelen")) {
+						args = append(args, fmt.Sprintf("C.size_t(%s)", p.Name))
+					} else if argN == 0 && funct == "fcntl" {
+						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+					} else if (argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt")) {
+						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+					}
+				} else if p.Type == "int32" {
+					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+				} else if p.Type == "int64" {
+					args = append(args, fmt.Sprintf("C.longlong(%s)", p.Name))
+				} else if p.Type == "uint32" {
+					args = append(args, fmt.Sprintf("C.uint(%s)", p.Name))
+				} else if p.Type == "uint64" {
+					args = append(args, fmt.Sprintf("C.ulonglong(%s)", p.Name))
+				} else if p.Type == "uintptr" {
+					args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else {
+					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+				}
+				argN++
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := ""
+			if sysname == "exit" {
+				if errvar != "" {
+					call += "er :="
+				} else {
+					call += ""
+				}
+			} else if errvar != "" {
+				call += "r0,er :="
+			} else if retvar != "" {
+				call += "r0,_ :="
+			} else {
+				call += ""
+			}
+			if sysname == "select" {
+				// select is a keyword of Go. Its name is
+				// changed to c_select.
+				call += fmt.Sprintf("C.c_%s(%s)", sysname, arglist)
+			} else {
+				call += fmt.Sprintf("C.%s(%s)", sysname, arglist)
+			}
+
+			// Assign return values.
+			body := ""
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+				} else {
+					reg = "r0"
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+
+			// verify return
+			if sysname != "exit" && errvar != "" {
+				if regexp.MustCompile(`^uintptr`).FindStringSubmatch(cRettype) != nil {
+					body += "\tif (uintptr(r0) ==^uintptr(0) && er != nil) {\n"
+					body += fmt.Sprintf("\t\t%s = er\n", errvar)
+					body += "\t}\n"
+				} else {
+					body += "\tif (r0 ==-1 && er != nil) {\n"
+					body += fmt.Sprintf("\t\t%s = er\n", errvar)
+					body += "\t}\n"
+				}
+			} else if errvar != "" {
+				body += "\tif (er != nil) {\n"
+				body += fmt.Sprintf("\t\t%s = er\n", errvar)
+				body += "\t}\n"
+			}
+
+			text += fmt.Sprintf("\t%s\n", call)
+			text += body
+
+			text += "\treturn\n"
+			text += "}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, cExtern, imp, text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+
+%s
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+
+%s
+
+%s
+`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go
new file mode 100644
index 0000000..c960099
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go
@@ -0,0 +1,614 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_aix.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+
+
+This program will generate three files and handle both gc and gccgo implementation:
+  - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation)
+  - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6
+  - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type.
+
+ The generated code looks like this
+
+zsyscall_aix_ppc64.go
+func asyscall(...) (n int, err error) {
+	 // Pointer Creation
+	 r1, e1 := callasyscall(...)
+	 // Type Conversion
+	 // Error Handler
+	 return
+}
+
+zsyscall_aix_ppc64_gc.go
+//go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o"
+//go:linkname libc_asyscall libc_asyscall
+var asyscall syscallFunc
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+	 r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... )
+	 return
+}
+
+zsyscall_aix_ppc64_ggcgo.go
+
+// int asyscall(...)
+
+import "C"
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+	 r1 = uintptr(C.asyscall(...))
+	 e1 = syscall.GetErrno()
+	 return
+}
+*/
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	aix  = flag.Bool("aix", false, "aix")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_aix_ppc64.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc64.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	// GCCGO
+	textgccgo := ""
+	cExtern := "/*\n#include <stdint.h>\n"
+	// GC
+	textgc := ""
+	dynimports := ""
+	linknames := ""
+	var vars []string
+	// COMMON
+	textcommon := ""
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			if sysname == "" {
+				sysname = funct
+			}
+
+			onlyCommon := false
+			if funct == "readlen" || funct == "writelen" || funct == "FcntlInt" || funct == "FcntlFlock" {
+				// This function call another syscall which is already implemented.
+				// Therefore, the gc and gccgo part must not be generated.
+				onlyCommon = true
+			}
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+
+			textcommon += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+			if !onlyCommon {
+				textgccgo += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+				textgc += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+			}
+
+			// Check if value return, err return available
+			errvar := ""
+			rettype := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+				} else {
+					rettype = p.Type
+				}
+			}
+
+			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			// GCCGO Prototype return type
+			cRettype := ""
+			if rettype == "unsafe.Pointer" {
+				cRettype = "uintptr_t"
+			} else if rettype == "uintptr" {
+				cRettype = "uintptr_t"
+			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
+				cRettype = "uintptr_t"
+			} else if rettype == "int" {
+				cRettype = "int"
+			} else if rettype == "int32" {
+				cRettype = "int"
+			} else if rettype == "int64" {
+				cRettype = "long long"
+			} else if rettype == "uint32" {
+				cRettype = "unsigned int"
+			} else if rettype == "uint64" {
+				cRettype = "unsigned long long"
+			} else {
+				cRettype = "int"
+			}
+			if sysname == "exit" {
+				cRettype = "void"
+			}
+
+			// GCCGO Prototype arguments type
+			var cIn []string
+			for i, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "string" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t", "size_t")
+				} else if p.Type == "unsafe.Pointer" {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "uintptr" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "int" {
+					if (i == 0 || i == 2) && funct == "fcntl" {
+						// These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock
+						cIn = append(cIn, "uintptr_t")
+					} else {
+						cIn = append(cIn, "int")
+					}
+
+				} else if p.Type == "int32" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int64" {
+					cIn = append(cIn, "long long")
+				} else if p.Type == "uint32" {
+					cIn = append(cIn, "unsigned int")
+				} else if p.Type == "uint64" {
+					cIn = append(cIn, "unsigned long long")
+				} else {
+					cIn = append(cIn, "int")
+				}
+			}
+
+			if !onlyCommon {
+				// GCCGO Prototype Generation
+				// Imports of system calls from libc
+				if sysname == "select" {
+					// select is a keyword of Go. Its name is
+					// changed to c_select.
+					cExtern += "#define c_select select\n"
+				}
+				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
+				cIn := strings.Join(cIn, ", ")
+				cExtern += fmt.Sprintf("(%s);\n", cIn)
+			}
+			// GC Library name
+			if modname == "" {
+				modname = "libc.a/shr_64.o"
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
+				os.Exit(1)
+			}
+			sysvarname := fmt.Sprintf("libc_%s", sysname)
+
+			if !onlyCommon {
+				// GC Runtime import of function to allow cross-platform builds.
+				dynimports += fmt.Sprintf("//go:cgo_import_dynamic %s %s \"%s\"\n", sysvarname, sysname, modname)
+				// GC Link symbol to proc address variable.
+				linknames += fmt.Sprintf("//go:linkname %s %s\n", sysvarname, sysvarname)
+				// GC Library proc address variable.
+				vars = append(vars, sysvarname)
+			}
+
+			strconvfunc := "BytePtrFromString"
+			strconvtype := "*byte"
+
+			// Go function header.
+			if outps != "" {
+				outps = fmt.Sprintf(" (%s)", outps)
+			}
+			if textcommon != "" {
+				textcommon += "\n"
+			}
+
+			textcommon += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
+
+			// Prepare arguments tocall.
+			var argscommon []string // Arguments in the common part
+			var argscall []string   // Arguments for call prototype
+			var argsgc []string     // Arguments for gc call (with syscall6)
+			var argsgccgo []string  // Arguments for gccgo call (with C.name_of_syscall)
+			n := 0
+			argN := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else if p.Type == "string" && errvar != "" {
+					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr ", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					textcommon += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
+					textcommon += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("len(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n), fmt.Sprintf("_lenp%d int", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n), fmt.Sprintf("uintptr(_lenp%d)", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n), fmt.Sprintf("C.size_t(_lenp%d)", n))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses int64 with 32 bits mode. Case not yet implemented\n")
+				} else if p.Type == "bool" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses bool. Case not yet implemented\n")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil || p.Type == "unsafe.Pointer" {
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else if p.Type == "int" {
+					if (argN == 0 || argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt") || (funct == "FcntlFlock")) {
+						// These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock
+						argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+						argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+						argsgc = append(argsgc, p.Name)
+						argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+
+					} else {
+						argscommon = append(argscommon, p.Name)
+						argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+						argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+						argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+					}
+				} else if p.Type == "int32" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s int32", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+				} else if p.Type == "int64" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s int64", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.longlong(%s)", p.Name))
+				} else if p.Type == "uint32" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uint32", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uint(%s)", p.Name))
+				} else if p.Type == "uint64" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uint64", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.ulonglong(%s)", p.Name))
+				} else if p.Type == "uintptr" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else {
+					argscommon = append(argscommon, fmt.Sprintf("int(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+				}
+				argN++
+			}
+			nargs := len(argsgc)
+
+			// COMMON function generation
+			argscommonlist := strings.Join(argscommon, ", ")
+			callcommon := fmt.Sprintf("call%s(%s)", sysname, argscommonlist)
+			ret := []string{"_", "_"}
+			body := ""
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+					ret[1] = reg
+					doErrno = true
+				} else {
+					reg = "r0"
+					ret[0] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%s != 0", reg)
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" {
+				textcommon += fmt.Sprintf("\t%s\n", callcommon)
+			} else {
+				textcommon += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], callcommon)
+			}
+			textcommon += body
+
+			if doErrno {
+				textcommon += "\tif e1 != 0 {\n"
+				textcommon += "\t\terr = errnoErr(e1)\n"
+				textcommon += "\t}\n"
+			}
+			textcommon += "\treturn\n"
+			textcommon += "}\n"
+
+			if onlyCommon {
+				continue
+			}
+
+			// CALL Prototype
+			callProto := fmt.Sprintf("func call%s(%s) (r1 uintptr, e1 Errno) {\n", sysname, strings.Join(argscall, ", "))
+
+			// GC function generation
+			asm := "syscall6"
+			if nonblock != nil {
+				asm = "rawSyscall6"
+			}
+
+			if len(argsgc) <= 6 {
+				for len(argsgc) < 6 {
+					argsgc = append(argsgc, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call", funct)
+				os.Exit(1)
+			}
+			argsgclist := strings.Join(argsgc, ", ")
+			callgc := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, argsgclist)
+
+			textgc += callProto
+			textgc += fmt.Sprintf("\tr1, _, e1 = %s\n", callgc)
+			textgc += "\treturn\n}\n"
+
+			// GCCGO function generation
+			argsgccgolist := strings.Join(argsgccgo, ", ")
+			var callgccgo string
+			if sysname == "select" {
+				// select is a keyword of Go. Its name is
+				// changed to c_select.
+				callgccgo = fmt.Sprintf("C.c_%s(%s)", sysname, argsgccgolist)
+			} else {
+				callgccgo = fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
+			}
+			textgccgo += callProto
+			textgccgo += fmt.Sprintf("\tr1 = uintptr(%s)\n", callgccgo)
+			textgccgo += "\te1 = syscall.GetErrno()\n"
+			textgccgo += "\treturn\n}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+
+	// Print zsyscall_aix_ppc64.go
+	err := ioutil.WriteFile("zsyscall_aix_ppc64.go",
+		[]byte(fmt.Sprintf(srcTemplate1, cmdLine(), buildTags(), pack, imp, textcommon)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	// Print zsyscall_aix_ppc64_gc.go
+	vardecls := "\t" + strings.Join(vars, ",\n\t")
+	vardecls += " syscallFunc"
+	err = ioutil.WriteFile("zsyscall_aix_ppc64_gc.go",
+		[]byte(fmt.Sprintf(srcTemplate2, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, textgc)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	// Print zsyscall_aix_ppc64_gccgo.go
+	err = ioutil.WriteFile("zsyscall_aix_ppc64_gccgo.go",
+		[]byte(fmt.Sprintf(srcTemplate3, cmdLine(), buildTags(), pack, cExtern, imp, textgccgo)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+}
+
+const srcTemplate1 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+import (
+	"unsafe"
+)
+
+
+%s
+
+%s
+`
+const srcTemplate2 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build !gccgo
+
+package %s
+
+import (
+	"unsafe"
+)
+%s
+%s
+%s
+type syscallFunc uintptr
+
+var (
+%s
+)
+
+// Implemented in runtime/syscall_aix.go.
+func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+
+%s
+`
+const srcTemplate3 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build gccgo
+
+package %s
+
+%s
+*/
+import "C"
+import (
+	"syscall"
+)
+
+
+%s
+
+%s
+`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_solaris.go b/vendor/golang.org/x/sys/unix/mksyscall_solaris.go
new file mode 100644
index 0000000..3d86473
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksyscall_solaris.go
@@ -0,0 +1,335 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+ This program reads a file containing function prototypes
+ (like syscall_solaris.go) and generates system call bodies.
+ The prototypes are marked by lines beginning with "//sys"
+ and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+*/
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_solaris.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_solaris.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	text := ""
+	dynimports := ""
+	linknames := ""
+	var vars []string
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// So file name.
+			if modname == "" {
+				modname = "libc"
+			}
+
+			// System call name.
+			if sysname == "" {
+				sysname = funct
+			}
+
+			// System call pointer variable name.
+			sysvarname := fmt.Sprintf("proc%s", sysname)
+
+			strconvfunc := "BytePtrFromString"
+			strconvtype := "*byte"
+
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			// Runtime import of function to allow cross-platform builds.
+			dynimports += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"%s.so\"\n", sysname, sysname, modname)
+			// Link symbol to proc address variable.
+			linknames += fmt.Sprintf("//go:linkname %s libc_%s\n", sysvarname, sysname)
+			// Library proc address variable.
+			vars = append(vars, sysvarname)
+
+			// Go function header.
+			outlist := strings.Join(out, ", ")
+			if outlist != "" {
+				outlist = fmt.Sprintf(" (%s)", outlist)
+			}
+			if text != "" {
+				text += "\n"
+			}
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outlist)
+
+			// Check if err return available
+			errvar := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+					continue
+				}
+			}
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					text += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					text += fmt.Sprintf("\t_p%d, _ = %s(%s)\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if s := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); s != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					text += fmt.Sprintf("\tvar _p%d *%s\n", n, s[1])
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+				} else if p.Type == "bool" {
+					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
+					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
+					args = append(args, fmt.Sprintf("uintptr(_p%d)", n))
+					n++
+				} else {
+					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+				}
+			}
+			nargs := len(args)
+
+			// Determine which form to use; pad args with zeros.
+			asm := "sysvicall6"
+			if nonblock != nil {
+				asm = "rawSysvicall6"
+			}
+			if len(args) <= 6 {
+				for len(args) < 6 {
+					args = append(args, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call\n", path)
+				os.Exit(1)
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, arglist)
+
+			// Assign return values.
+			body := ""
+			ret := []string{"_", "_", "_"}
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+					ret[2] = reg
+					doErrno = true
+				} else {
+					reg = fmt.Sprintf("r%d", i)
+					ret[i] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%d != 0", reg)
+				}
+				if p.Type == "int64" && endianness != "" {
+					// 64-bit number in r1:r0 or r0:r1.
+					if i+2 > len(out) {
+						fmt.Fprintf(os.Stderr, "%s: not enough registers for int64 return\n", path)
+						os.Exit(1)
+					}
+					if endianness == "big-endian" {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
+					} else {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
+					}
+					ret[i] = fmt.Sprintf("r%d", i)
+					ret[i+1] = fmt.Sprintf("r%d", i+1)
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
+				text += fmt.Sprintf("\t%s\n", call)
+			} else {
+				text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
+			}
+			text += body
+
+			if doErrno {
+				text += "\tif e1 != 0 {\n"
+				text += "\t\terr = e1\n"
+				text += "\t}\n"
+			}
+			text += "\treturn\n"
+			text += "}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+	vardecls := "\t" + strings.Join(vars, ",\n\t")
+	vardecls += " syscallFunc"
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+import (
+	"syscall"
+	"unsafe"
+)
+%s
+%s
+%s
+var (
+%s	
+)
+
+%s
+`
diff --git a/vendor/golang.org/x/sys/unix/mksysctl_openbsd.go b/vendor/golang.org/x/sys/unix/mksysctl_openbsd.go
new file mode 100644
index 0000000..b6b4099
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksysctl_openbsd.go
@@ -0,0 +1,355 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// Parse the header files for OpenBSD and generate a Go usable sysctl MIB.
+//
+// Build a MIB with each entry being an array containing the level, type and
+// a hash that will contain additional entries if the current entry is a node.
+// We then walk this MIB and create a flattened sysctl name to OID hash.
+
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+var (
+	goos, goarch string
+)
+
+// cmdLine returns this programs's commandline arguments.
+func cmdLine() string {
+	return "go run mksysctl_openbsd.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags.
+func buildTags() string {
+	return fmt.Sprintf("%s,%s", goarch, goos)
+}
+
+// reMatch performs regular expression match and stores the substring slice to value pointed by m.
+func reMatch(re *regexp.Regexp, str string, m *[]string) bool {
+	*m = re.FindStringSubmatch(str)
+	if *m != nil {
+		return true
+	}
+	return false
+}
+
+type nodeElement struct {
+	n  int
+	t  string
+	pE *map[string]nodeElement
+}
+
+var (
+	debugEnabled bool
+	mib          map[string]nodeElement
+	node         *map[string]nodeElement
+	nodeMap      map[string]string
+	sysCtl       []string
+)
+
+var (
+	ctlNames1RE = regexp.MustCompile(`^#define\s+(CTL_NAMES)\s+{`)
+	ctlNames2RE = regexp.MustCompile(`^#define\s+(CTL_(.*)_NAMES)\s+{`)
+	ctlNames3RE = regexp.MustCompile(`^#define\s+((.*)CTL_NAMES)\s+{`)
+	netInetRE   = regexp.MustCompile(`^netinet/`)
+	netInet6RE  = regexp.MustCompile(`^netinet6/`)
+	netRE       = regexp.MustCompile(`^net/`)
+	bracesRE    = regexp.MustCompile(`{.*}`)
+	ctlTypeRE   = regexp.MustCompile(`{\s+"(\w+)",\s+(CTLTYPE_[A-Z]+)\s+}`)
+	fsNetKernRE = regexp.MustCompile(`^(fs|net|kern)_`)
+)
+
+func debug(s string) {
+	if debugEnabled {
+		fmt.Fprintln(os.Stderr, s)
+	}
+}
+
+// Walk the MIB and build a sysctl name to OID mapping.
+func buildSysctl(pNode *map[string]nodeElement, name string, oid []int) {
+	lNode := pNode // local copy of pointer to node
+	var keys []string
+	for k := range *lNode {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+
+	for _, key := range keys {
+		nodename := name
+		if name != "" {
+			nodename += "."
+		}
+		nodename += key
+
+		nodeoid := append(oid, (*pNode)[key].n)
+
+		if (*pNode)[key].t == `CTLTYPE_NODE` {
+			if _, ok := nodeMap[nodename]; ok {
+				lNode = &mib
+				ctlName := nodeMap[nodename]
+				for _, part := range strings.Split(ctlName, ".") {
+					lNode = ((*lNode)[part]).pE
+				}
+			} else {
+				lNode = (*pNode)[key].pE
+			}
+			buildSysctl(lNode, nodename, nodeoid)
+		} else if (*pNode)[key].t != "" {
+			oidStr := []string{}
+			for j := range nodeoid {
+				oidStr = append(oidStr, fmt.Sprintf("%d", nodeoid[j]))
+			}
+			text := "\t{ \"" + nodename + "\", []_C_int{ " + strings.Join(oidStr, ", ") + " } }, \n"
+			sysCtl = append(sysCtl, text)
+		}
+	}
+}
+
+func main() {
+	// Get the OS (using GOOS_TARGET if it exist)
+	goos = os.Getenv("GOOS_TARGET")
+	if goos == "" {
+		goos = os.Getenv("GOOS")
+	}
+	// Get the architecture (using GOARCH_TARGET if it exists)
+	goarch = os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check if GOOS and GOARCH environment variables are defined
+	if goarch == "" || goos == "" {
+		fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
+		os.Exit(1)
+	}
+
+	mib = make(map[string]nodeElement)
+	headers := [...]string{
+		`sys/sysctl.h`,
+		`sys/socket.h`,
+		`sys/tty.h`,
+		`sys/malloc.h`,
+		`sys/mount.h`,
+		`sys/namei.h`,
+		`sys/sem.h`,
+		`sys/shm.h`,
+		`sys/vmmeter.h`,
+		`uvm/uvmexp.h`,
+		`uvm/uvm_param.h`,
+		`uvm/uvm_swap_encrypt.h`,
+		`ddb/db_var.h`,
+		`net/if.h`,
+		`net/if_pfsync.h`,
+		`net/pipex.h`,
+		`netinet/in.h`,
+		`netinet/icmp_var.h`,
+		`netinet/igmp_var.h`,
+		`netinet/ip_ah.h`,
+		`netinet/ip_carp.h`,
+		`netinet/ip_divert.h`,
+		`netinet/ip_esp.h`,
+		`netinet/ip_ether.h`,
+		`netinet/ip_gre.h`,
+		`netinet/ip_ipcomp.h`,
+		`netinet/ip_ipip.h`,
+		`netinet/pim_var.h`,
+		`netinet/tcp_var.h`,
+		`netinet/udp_var.h`,
+		`netinet6/in6.h`,
+		`netinet6/ip6_divert.h`,
+		`netinet6/pim6_var.h`,
+		`netinet/icmp6.h`,
+		`netmpls/mpls.h`,
+	}
+
+	ctls := [...]string{
+		`kern`,
+		`vm`,
+		`fs`,
+		`net`,
+		//debug			/* Special handling required */
+		`hw`,
+		//machdep		/* Arch specific */
+		`user`,
+		`ddb`,
+		//vfs			/* Special handling required */
+		`fs.posix`,
+		`kern.forkstat`,
+		`kern.intrcnt`,
+		`kern.malloc`,
+		`kern.nchstats`,
+		`kern.seminfo`,
+		`kern.shminfo`,
+		`kern.timecounter`,
+		`kern.tty`,
+		`kern.watchdog`,
+		`net.bpf`,
+		`net.ifq`,
+		`net.inet`,
+		`net.inet.ah`,
+		`net.inet.carp`,
+		`net.inet.divert`,
+		`net.inet.esp`,
+		`net.inet.etherip`,
+		`net.inet.gre`,
+		`net.inet.icmp`,
+		`net.inet.igmp`,
+		`net.inet.ip`,
+		`net.inet.ip.ifq`,
+		`net.inet.ipcomp`,
+		`net.inet.ipip`,
+		`net.inet.mobileip`,
+		`net.inet.pfsync`,
+		`net.inet.pim`,
+		`net.inet.tcp`,
+		`net.inet.udp`,
+		`net.inet6`,
+		`net.inet6.divert`,
+		`net.inet6.ip6`,
+		`net.inet6.icmp6`,
+		`net.inet6.pim6`,
+		`net.inet6.tcp6`,
+		`net.inet6.udp6`,
+		`net.mpls`,
+		`net.mpls.ifq`,
+		`net.key`,
+		`net.pflow`,
+		`net.pfsync`,
+		`net.pipex`,
+		`net.rt`,
+		`vm.swapencrypt`,
+		//vfsgenctl		/* Special handling required */
+	}
+
+	// Node name "fixups"
+	ctlMap := map[string]string{
+		"ipproto":             "net.inet",
+		"net.inet.ipproto":    "net.inet",
+		"net.inet6.ipv6proto": "net.inet6",
+		"net.inet6.ipv6":      "net.inet6.ip6",
+		"net.inet.icmpv6":     "net.inet6.icmp6",
+		"net.inet6.divert6":   "net.inet6.divert",
+		"net.inet6.tcp6":      "net.inet.tcp",
+		"net.inet6.udp6":      "net.inet.udp",
+		"mpls":                "net.mpls",
+		"swpenc":              "vm.swapencrypt",
+	}
+
+	// Node mappings
+	nodeMap = map[string]string{
+		"net.inet.ip.ifq": "net.ifq",
+		"net.inet.pfsync": "net.pfsync",
+		"net.mpls.ifq":    "net.ifq",
+	}
+
+	mCtls := make(map[string]bool)
+	for _, ctl := range ctls {
+		mCtls[ctl] = true
+	}
+
+	for _, header := range headers {
+		debug("Processing " + header)
+		file, err := os.Open(filepath.Join("/usr/include", header))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			var sub []string
+			if reMatch(ctlNames1RE, s.Text(), &sub) ||
+				reMatch(ctlNames2RE, s.Text(), &sub) ||
+				reMatch(ctlNames3RE, s.Text(), &sub) {
+				if sub[1] == `CTL_NAMES` {
+					// Top level.
+					node = &mib
+				} else {
+					// Node.
+					nodename := strings.ToLower(sub[2])
+					ctlName := ""
+					if reMatch(netInetRE, header, &sub) {
+						ctlName = "net.inet." + nodename
+					} else if reMatch(netInet6RE, header, &sub) {
+						ctlName = "net.inet6." + nodename
+					} else if reMatch(netRE, header, &sub) {
+						ctlName = "net." + nodename
+					} else {
+						ctlName = nodename
+						ctlName = fsNetKernRE.ReplaceAllString(ctlName, `$1.`)
+					}
+
+					if val, ok := ctlMap[ctlName]; ok {
+						ctlName = val
+					}
+					if _, ok := mCtls[ctlName]; !ok {
+						debug("Ignoring " + ctlName + "...")
+						continue
+					}
+
+					// Walk down from the top of the MIB.
+					node = &mib
+					for _, part := range strings.Split(ctlName, ".") {
+						if _, ok := (*node)[part]; !ok {
+							debug("Missing node " + part)
+							(*node)[part] = nodeElement{n: 0, t: "", pE: &map[string]nodeElement{}}
+						}
+						node = (*node)[part].pE
+					}
+				}
+
+				// Populate current node with entries.
+				i := -1
+				for !strings.HasPrefix(s.Text(), "}") {
+					s.Scan()
+					if reMatch(bracesRE, s.Text(), &sub) {
+						i++
+					}
+					if !reMatch(ctlTypeRE, s.Text(), &sub) {
+						continue
+					}
+					(*node)[sub[1]] = nodeElement{n: i, t: sub[2], pE: &map[string]nodeElement{}}
+				}
+			}
+		}
+		err = s.Err()
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	buildSysctl(&mib, "", []int{})
+
+	sort.Strings(sysCtl)
+	text := strings.Join(sysCtl, "")
+
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+type mibentry struct {
+	ctlname string
+	ctloid []_C_int
+}
+
+var sysctlMib = []mibentry {
+%s
+}
+`
diff --git a/vendor/golang.org/x/sys/unix/mksysnum.go b/vendor/golang.org/x/sys/unix/mksysnum.go
new file mode 100644
index 0000000..baa6ecd
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksysnum.go
@@ -0,0 +1,190 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// Generate system call table for DragonFly, NetBSD,
+// FreeBSD, OpenBSD or Darwin from master list
+// (for example, /usr/src/sys/kern/syscalls.master or
+// sys/syscall.h).
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	goos, goarch string
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksysnum.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return fmt.Sprintf("%s,%s", goarch, goos)
+}
+
+func checkErr(err error) {
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+// source string and substring slice for regexp
+type re struct {
+	str string   // source string
+	sub []string // matched sub-string
+}
+
+// Match performs regular expression match
+func (r *re) Match(exp string) bool {
+	r.sub = regexp.MustCompile(exp).FindStringSubmatch(r.str)
+	if r.sub != nil {
+		return true
+	}
+	return false
+}
+
+// fetchFile fetches a text file from URL
+func fetchFile(URL string) io.Reader {
+	resp, err := http.Get(URL)
+	checkErr(err)
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	checkErr(err)
+	return strings.NewReader(string(body))
+}
+
+// readFile reads a text file from path
+func readFile(path string) io.Reader {
+	file, err := os.Open(os.Args[1])
+	checkErr(err)
+	return file
+}
+
+func format(name, num, proto string) string {
+	name = strings.ToUpper(name)
+	// There are multiple entries for enosys and nosys, so comment them out.
+	nm := re{str: name}
+	if nm.Match(`^SYS_E?NOSYS$`) {
+		name = fmt.Sprintf("// %s", name)
+	}
+	if name == `SYS_SYS_EXIT` {
+		name = `SYS_EXIT`
+	}
+	return fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
+}
+
+func main() {
+	// Get the OS (using GOOS_TARGET if it exist)
+	goos = os.Getenv("GOOS_TARGET")
+	if goos == "" {
+		goos = os.Getenv("GOOS")
+	}
+	// Get the architecture (using GOARCH_TARGET if it exists)
+	goarch = os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check if GOOS and GOARCH environment variables are defined
+	if goarch == "" || goos == "" {
+		fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
+		os.Exit(1)
+	}
+
+	file := strings.TrimSpace(os.Args[1])
+	var syscalls io.Reader
+	if strings.HasPrefix(file, "https://") || strings.HasPrefix(file, "http://") {
+		// Download syscalls.master file
+		syscalls = fetchFile(file)
+	} else {
+		syscalls = readFile(file)
+	}
+
+	var text, line string
+	s := bufio.NewScanner(syscalls)
+	for s.Scan() {
+		t := re{str: line}
+		if t.Match(`^(.*)\\$`) {
+			// Handle continuation
+			line = t.sub[1]
+			line += strings.TrimLeft(s.Text(), " \t")
+		} else {
+			// New line
+			line = s.Text()
+		}
+		t = re{str: line}
+		if t.Match(`\\$`) {
+			continue
+		}
+		t = re{str: line}
+
+		switch goos {
+		case "dragonfly":
+			if t.Match(`^([0-9]+)\s+STD\s+({ \S+\s+(\w+).*)$`) {
+				num, proto := t.sub[1], t.sub[2]
+				name := fmt.Sprintf("SYS_%s", t.sub[3])
+				text += format(name, num, proto)
+			}
+		case "freebsd":
+			if t.Match(`^([0-9]+)\s+\S+\s+(?:(?:NO)?STD|COMPAT10)\s+({ \S+\s+(\w+).*)$`) {
+				num, proto := t.sub[1], t.sub[2]
+				name := fmt.Sprintf("SYS_%s", t.sub[3])
+				text += format(name, num, proto)
+			}
+		case "openbsd":
+			if t.Match(`^([0-9]+)\s+STD\s+(NOLOCK\s+)?({ \S+\s+\*?(\w+).*)$`) {
+				num, proto, name := t.sub[1], t.sub[3], t.sub[4]
+				text += format(name, num, proto)
+			}
+		case "netbsd":
+			if t.Match(`^([0-9]+)\s+((STD)|(NOERR))\s+(RUMP\s+)?({\s+\S+\s*\*?\s*\|(\S+)\|(\S*)\|(\w+).*\s+})(\s+(\S+))?$`) {
+				num, proto, compat := t.sub[1], t.sub[6], t.sub[8]
+				name := t.sub[7] + "_" + t.sub[9]
+				if t.sub[11] != "" {
+					name = t.sub[7] + "_" + t.sub[11]
+				}
+				name = strings.ToUpper(name)
+				if compat == "" || compat == "13" || compat == "30" || compat == "50" {
+					text += fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
+				}
+			}
+		case "darwin":
+			if t.Match(`^#define\s+SYS_(\w+)\s+([0-9]+)`) {
+				name, num := t.sub[1], t.sub[2]
+				name = strings.ToUpper(name)
+				text += fmt.Sprintf("	SYS_%s = %s;\n", name, num)
+			}
+		default:
+			fmt.Fprintf(os.Stderr, "unrecognized GOOS=%s\n", goos)
+			os.Exit(1)
+
+		}
+	}
+	err := s.Err()
+	checkErr(err)
+
+	fmt.Printf(template, cmdLine(), buildTags(), text)
+}
+
+const template = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+const(
+%s)`
diff --git a/vendor/golang.org/x/sys/unix/types_aix.go b/vendor/golang.org/x/sys/unix/types_aix.go
new file mode 100644
index 0000000..40d2bee
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_aix.go
@@ -0,0 +1,237 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+// +build aix
+
+/*
+Input to cgo -godefs.  See also mkerrors.sh and mkall.sh
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/limits.h>
+#include <sys/un.h>
+#include <utime.h>
+#include <sys/utsname.h>
+#include <sys/poll.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/termio.h>
+#include <sys/ioctl.h>
+
+#include <termios.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+
+
+#include <dirent.h>
+#include <fcntl.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;     // this one gets used for fields
+	struct sockaddr_in s2;  // these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+	PathMax        = C.PATH_MAX
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+type off64 C.off64_t
+type off C.off_t
+type Mode_t C.mode_t
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+type Timex C.struct_timex
+
+type Time_t C.time_t
+
+type Tms C.struct_tms
+
+type Utimbuf C.struct_utimbuf
+
+type Timezone C.struct_timezone
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit64
+
+type Pid_t C.pid_t
+
+type _Gid_t C.gid_t
+
+type dev_t C.dev_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type StatxTimestamp C.struct_statx_timestamp
+
+type Statx_t C.struct_statx
+
+type Dirent C.struct_dirent
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Cmsghdr C.struct_cmsghdr
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type Linger C.struct_linger
+
+type Msghdr C.struct_msghdr
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr = C.sizeof_struct_if_msghdr
+)
+
+type IfMsgHdr C.struct_if_msghdr
+
+// Misc
+
+type FdSet C.fd_set
+
+type Utsname C.struct_utsname
+
+type Ustat_t C.struct_ustat
+
+type Sigset_t C.sigset_t
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Termio C.struct_termio
+
+type Winsize C.struct_winsize
+
+//poll
+
+type PollFd struct {
+	Fd      int32
+	Events  uint16
+	Revents uint16
+}
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+//flock_t
+
+type Flock_t C.struct_flock64
+
+// Statfs
+
+type Fsid_t C.struct_fsid_t
+type Fsid64_t C.struct_fsid64_t
+
+type Statfs_t C.struct_statfs
+
+const RNDGETENTCNT = 0x80045200
diff --git a/vendor/golang.org/x/sys/unix/types_darwin.go b/vendor/golang.org/x/sys/unix/types_darwin.go
new file mode 100644
index 0000000..155c2e6
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_darwin.go
@@ -0,0 +1,283 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define __DARWIN_UNIX03 0
+#define KERNEL
+#define _DARWIN_USE_64_BIT_INODE
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <unistd.h>
+#include <mach/mach.h>
+#include <mach/message.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_var.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat64
+
+type Statfs_t C.struct_statfs64
+
+type Flock_t C.struct_flock
+
+type Fstore_t C.struct_fstore
+
+type Radvisory_t C.struct_radvisory
+
+type Fbootstraptransfer_t C.struct_fbootstraptransfer
+
+type Log2phys_t C.struct_log2phys
+
+type Fsid C.struct_fsid
+
+type Dirent C.struct_dirent
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet4Pktinfo C.struct_in_pktinfo
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet4Pktinfo     = C.sizeof_struct_in_pktinfo
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr    = C.sizeof_struct_if_msghdr
+	SizeofIfData      = C.sizeof_struct_if_data
+	SizeofIfaMsghdr   = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr  = C.sizeof_struct_ifma_msghdr
+	SizeofIfmaMsghdr2 = C.sizeof_struct_ifma_msghdr2
+	SizeofRtMsghdr    = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics   = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfmaMsghdr2 C.struct_ifma_msghdr2
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// uname
+
+type Utsname C.struct_utsname
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo
diff --git a/vendor/golang.org/x/sys/unix/types_dragonfly.go b/vendor/golang.org/x/sys/unix/types_dragonfly.go
new file mode 100644
index 0000000..3365dd7
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_dragonfly.go
@@ -0,0 +1,263 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.struct_fsid
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Uname
+
+type Utsname C.struct_utsname
diff --git a/vendor/golang.org/x/sys/unix/types_freebsd.go b/vendor/golang.org/x/sys/unix/types_freebsd.go
new file mode 100644
index 0000000..a121dc3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_freebsd.go
@@ -0,0 +1,400 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define	_WANT_FREEBSD11_STAT	1
+#define	_WANT_FREEBSD11_STATFS	1
+#define	_WANT_FREEBSD11_DIRENT	1
+#define	_WANT_FREEBSD11_KEVENT  1
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/capsicum.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+// This structure is a duplicate of if_data on FreeBSD 8-STABLE.
+// See /usr/include/net/if.h.
+struct if_data8 {
+	u_char  ifi_type;
+	u_char  ifi_physical;
+	u_char  ifi_addrlen;
+	u_char  ifi_hdrlen;
+	u_char  ifi_link_state;
+	u_char  ifi_spare_char1;
+	u_char  ifi_spare_char2;
+	u_char  ifi_datalen;
+	u_long  ifi_mtu;
+	u_long  ifi_metric;
+	u_long  ifi_baudrate;
+	u_long  ifi_ipackets;
+	u_long  ifi_ierrors;
+	u_long  ifi_opackets;
+	u_long  ifi_oerrors;
+	u_long  ifi_collisions;
+	u_long  ifi_ibytes;
+	u_long  ifi_obytes;
+	u_long  ifi_imcasts;
+	u_long  ifi_omcasts;
+	u_long  ifi_iqdrops;
+	u_long  ifi_noproto;
+	u_long  ifi_hwassist;
+// FIXME: these are now unions, so maybe need to change definitions?
+#undef ifi_epoch
+	time_t  ifi_epoch;
+#undef ifi_lastchange
+	struct  timeval ifi_lastchange;
+};
+
+// This structure is a duplicate of if_msghdr on FreeBSD 8-STABLE.
+// See /usr/include/net/if.h.
+struct if_msghdr8 {
+	u_short ifm_msglen;
+	u_char  ifm_version;
+	u_char  ifm_type;
+	int     ifm_addrs;
+	int     ifm_flags;
+	u_short ifm_index;
+	struct  if_data8 ifm_data;
+};
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+const (
+	_statfsVersion = C.STATFS_VERSION
+	_dirblksiz     = C.DIRBLKSIZ
+)
+
+type Stat_t C.struct_stat
+
+type stat_freebsd11_t C.struct_freebsd11_stat
+
+type Statfs_t C.struct_statfs
+
+type statfs_freebsd11_t C.struct_freebsd11_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type dirent_freebsd11 C.struct_freebsd11_dirent
+
+type Fsid C.struct_fsid
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Advice to Fadvise
+
+const (
+	FADV_NORMAL     = C.POSIX_FADV_NORMAL
+	FADV_RANDOM     = C.POSIX_FADV_RANDOM
+	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
+	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
+	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
+	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPMreqn C.struct_ip_mreqn
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPMreqn          = C.sizeof_struct_ip_mreqn
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_ATTACH     = C.PT_ATTACH
+	PTRACE_CONT       = C.PT_CONTINUE
+	PTRACE_DETACH     = C.PT_DETACH
+	PTRACE_GETFPREGS  = C.PT_GETFPREGS
+	PTRACE_GETFSBASE  = C.PT_GETFSBASE
+	PTRACE_GETLWPLIST = C.PT_GETLWPLIST
+	PTRACE_GETNUMLWPS = C.PT_GETNUMLWPS
+	PTRACE_GETREGS    = C.PT_GETREGS
+	PTRACE_GETXSTATE  = C.PT_GETXSTATE
+	PTRACE_IO         = C.PT_IO
+	PTRACE_KILL       = C.PT_KILL
+	PTRACE_LWPEVENTS  = C.PT_LWP_EVENTS
+	PTRACE_LWPINFO    = C.PT_LWPINFO
+	PTRACE_SETFPREGS  = C.PT_SETFPREGS
+	PTRACE_SETREGS    = C.PT_SETREGS
+	PTRACE_SINGLESTEP = C.PT_STEP
+	PTRACE_TRACEME    = C.PT_TRACE_ME
+)
+
+const (
+	PIOD_READ_D  = C.PIOD_READ_D
+	PIOD_WRITE_D = C.PIOD_WRITE_D
+	PIOD_READ_I  = C.PIOD_READ_I
+	PIOD_WRITE_I = C.PIOD_WRITE_I
+)
+
+const (
+	PL_FLAG_BORN   = C.PL_FLAG_BORN
+	PL_FLAG_EXITED = C.PL_FLAG_EXITED
+	PL_FLAG_SI     = C.PL_FLAG_SI
+)
+
+const (
+	TRAP_BRKPT = C.TRAP_BRKPT
+	TRAP_TRACE = C.TRAP_TRACE
+)
+
+type PtraceLwpInfoStruct C.struct_ptrace_lwpinfo
+
+type __Siginfo C.struct___siginfo
+
+type Sigset_t C.sigset_t
+
+type Reg C.struct_reg
+
+type FpReg C.struct_fpreg
+
+type PtraceIoDesc C.struct_ptrace_io_desc
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent_freebsd11
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	sizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr8
+	sizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfData           = C.sizeof_struct_if_data8
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type ifMsghdr C.struct_if_msghdr
+
+type IfMsghdr C.struct_if_msghdr8
+
+type ifData C.struct_if_data
+
+type IfData C.struct_if_data8
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion    = C.sizeof_struct_bpf_version
+	SizeofBpfStat       = C.sizeof_struct_bpf_stat
+	SizeofBpfZbuf       = C.sizeof_struct_bpf_zbuf
+	SizeofBpfProgram    = C.sizeof_struct_bpf_program
+	SizeofBpfInsn       = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr        = C.sizeof_struct_bpf_hdr
+	SizeofBpfZbufHeader = C.sizeof_struct_bpf_zbuf_header
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfZbuf C.struct_bpf_zbuf
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfZbufHeader C.struct_bpf_zbuf_header
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR      = C.POLLERR
+	POLLHUP      = C.POLLHUP
+	POLLIN       = C.POLLIN
+	POLLINIGNEOF = C.POLLINIGNEOF
+	POLLNVAL     = C.POLLNVAL
+	POLLOUT      = C.POLLOUT
+	POLLPRI      = C.POLLPRI
+	POLLRDBAND   = C.POLLRDBAND
+	POLLRDNORM   = C.POLLRDNORM
+	POLLWRBAND   = C.POLLWRBAND
+	POLLWRNORM   = C.POLLWRNORM
+)
+
+// Capabilities
+
+type CapRights C.struct_cap_rights
+
+// Uname
+
+type Utsname C.struct_utsname
diff --git a/vendor/golang.org/x/sys/unix/types_netbsd.go b/vendor/golang.org/x/sys/unix/types_netbsd.go
new file mode 100644
index 0000000..4a96d72
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_netbsd.go
@@ -0,0 +1,290 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.fsid_t
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Advice to Fadvise
+
+const (
+	FADV_NORMAL     = C.POSIX_FADV_NORMAL
+	FADV_RANDOM     = C.POSIX_FADV_RANDOM
+	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
+	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
+	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
+	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+type Mclpool C.struct_mclpool
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfTimeval C.struct_bpf_timeval
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+type Ptmget C.struct_ptmget
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Sysctl
+
+type Sysctlnode C.struct_sysctlnode
+
+// Uname
+
+type Utsname C.struct_utsname
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo
diff --git a/vendor/golang.org/x/sys/unix/types_openbsd.go b/vendor/golang.org/x/sys/unix/types_openbsd.go
new file mode 100644
index 0000000..775cb57
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_openbsd.go
@@ -0,0 +1,283 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <uvm/uvmexp.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.fsid_t
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+type Mclpool C.struct_mclpool
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfTimeval C.struct_bpf_timeval
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Signal Sets
+
+type Sigset_t C.sigset_t
+
+// Uname
+
+type Utsname C.struct_utsname
+
+// Uvmexp
+
+const SizeofUvmexp = C.sizeof_struct_uvmexp
+
+type Uvmexp C.struct_uvmexp
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo
diff --git a/vendor/golang.org/x/sys/unix/types_solaris.go b/vendor/golang.org/x/sys/unix/types_solaris.go
new file mode 100644
index 0000000..2b716f9
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/types_solaris.go
@@ -0,0 +1,266 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+// These defines ensure that builds done on newer versions of Solaris are
+// backwards-compatible with older versions of Solaris and
+// OpenSolaris-based derivatives.
+#define __USE_SUNOS_SOCKETS__          // msghdr
+#define __USE_LEGACY_PROTOTYPES__      // iovec
+#include <dirent.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <limits.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <termio.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+#include <ustat.h>
+#include <utime.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+	PathMax        = C.PATH_MAX
+	MaxHostNameLen = C.MAXHOSTNAMELEN
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+type Tms C.struct_tms
+
+type Utimbuf C.struct_utimbuf
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+// Filesystems
+
+type _Fsblkcnt_t C.fsblkcnt_t
+
+type Statvfs_t C.struct_statvfs
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Select
+
+type FdSet C.fd_set
+
+// Misc
+
+type Utsname C.struct_utsname
+
+type Ustat_t C.struct_ustat
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_EACCESS          = C.AT_EACCESS
+)
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr  = C.sizeof_struct_if_msghdr
+	SizeofIfData    = C.sizeof_struct_if_data
+	SizeofIfaMsghdr = C.sizeof_struct_ifa_msghdr
+	SizeofRtMsghdr  = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfTimeval C.struct_bpf_timeval
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Termio C.struct_termio
+
+type Winsize C.struct_winsize
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen.go b/vendor/golang.org/x/text/unicode/bidi/gen.go
new file mode 100644
index 0000000..987fc16
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/bidi/gen.go
@@ -0,0 +1,133 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+package main
+
+import (
+	"flag"
+	"log"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/triegen"
+	"golang.org/x/text/internal/ucd"
+)
+
+var outputFile = flag.String("out", "tables.go", "output file")
+
+func main() {
+	gen.Init()
+	gen.Repackage("gen_trieval.go", "trieval.go", "bidi")
+	gen.Repackage("gen_ranges.go", "ranges_test.go", "bidi")
+
+	genTables()
+}
+
+// bidiClass names and codes taken from class "bc" in
+// https://www.unicode.org/Public/8.0.0/ucd/PropertyValueAliases.txt
+var bidiClass = map[string]Class{
+	"AL":  AL,  // ArabicLetter
+	"AN":  AN,  // ArabicNumber
+	"B":   B,   // ParagraphSeparator
+	"BN":  BN,  // BoundaryNeutral
+	"CS":  CS,  // CommonSeparator
+	"EN":  EN,  // EuropeanNumber
+	"ES":  ES,  // EuropeanSeparator
+	"ET":  ET,  // EuropeanTerminator
+	"L":   L,   // LeftToRight
+	"NSM": NSM, // NonspacingMark
+	"ON":  ON,  // OtherNeutral
+	"R":   R,   // RightToLeft
+	"S":   S,   // SegmentSeparator
+	"WS":  WS,  // WhiteSpace
+
+	"FSI": Control,
+	"PDF": Control,
+	"PDI": Control,
+	"LRE": Control,
+	"LRI": Control,
+	"LRO": Control,
+	"RLE": Control,
+	"RLI": Control,
+	"RLO": Control,
+}
+
+func genTables() {
+	if numClass > 0x0F {
+		log.Fatalf("Too many Class constants (%#x > 0x0F).", numClass)
+	}
+	w := gen.NewCodeWriter()
+	defer w.WriteVersionedGoFile(*outputFile, "bidi")
+
+	gen.WriteUnicodeVersion(w)
+
+	t := triegen.NewTrie("bidi")
+
+	// Build data about bracket mapping. These bits need to be or-ed with
+	// any other bits.
+	orMask := map[rune]uint64{}
+
+	xorMap := map[rune]int{}
+	xorMasks := []rune{0} // First value is no-op.
+
+	ucd.Parse(gen.OpenUCDFile("BidiBrackets.txt"), func(p *ucd.Parser) {
+		r1 := p.Rune(0)
+		r2 := p.Rune(1)
+		xor := r1 ^ r2
+		if _, ok := xorMap[xor]; !ok {
+			xorMap[xor] = len(xorMasks)
+			xorMasks = append(xorMasks, xor)
+		}
+		entry := uint64(xorMap[xor]) << xorMaskShift
+		switch p.String(2) {
+		case "o":
+			entry |= openMask
+		case "c", "n":
+		default:
+			log.Fatalf("Unknown bracket class %q.", p.String(2))
+		}
+		orMask[r1] = entry
+	})
+
+	w.WriteComment(`
+	xorMasks contains masks to be xor-ed with brackets to get the reverse
+	version.`)
+	w.WriteVar("xorMasks", xorMasks)
+
+	done := map[rune]bool{}
+
+	insert := func(r rune, c Class) {
+		if !done[r] {
+			t.Insert(r, orMask[r]|uint64(c))
+			done[r] = true
+		}
+	}
+
+	// Insert the derived BiDi properties.
+	ucd.Parse(gen.OpenUCDFile("extracted/DerivedBidiClass.txt"), func(p *ucd.Parser) {
+		r := p.Rune(0)
+		class, ok := bidiClass[p.String(1)]
+		if !ok {
+			log.Fatalf("%U: Unknown BiDi class %q", r, p.String(1))
+		}
+		insert(r, class)
+	})
+	visitDefaults(insert)
+
+	// TODO: use sparse blocks. This would reduce table size considerably
+	// from the looks of it.
+
+	sz, err := t.Gen(w)
+	if err != nil {
+		log.Fatal(err)
+	}
+	w.Size += sz
+}
+
+// dummy values to make methods in gen_common compile. The real versions
+// will be generated by this file to tables.go.
+var (
+	xorMasks []rune
+)
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go b/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go
new file mode 100644
index 0000000..02c3b50
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go
@@ -0,0 +1,57 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+package main
+
+import (
+	"unicode"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/ucd"
+	"golang.org/x/text/unicode/rangetable"
+)
+
+// These tables are hand-extracted from:
+// https://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedBidiClass.txt
+func visitDefaults(fn func(r rune, c Class)) {
+	// first write default values for ranges listed above.
+	visitRunes(fn, AL, []rune{
+		0x0600, 0x07BF, // Arabic
+		0x08A0, 0x08FF, // Arabic Extended-A
+		0xFB50, 0xFDCF, // Arabic Presentation Forms
+		0xFDF0, 0xFDFF,
+		0xFE70, 0xFEFF,
+		0x0001EE00, 0x0001EEFF, // Arabic Mathematical Alpha Symbols
+	})
+	visitRunes(fn, R, []rune{
+		0x0590, 0x05FF, // Hebrew
+		0x07C0, 0x089F, // Nko et al.
+		0xFB1D, 0xFB4F,
+		0x00010800, 0x00010FFF, // Cypriot Syllabary et. al.
+		0x0001E800, 0x0001EDFF,
+		0x0001EF00, 0x0001EFFF,
+	})
+	visitRunes(fn, ET, []rune{ // European Terminator
+		0x20A0, 0x20Cf, // Currency symbols
+	})
+	rangetable.Visit(unicode.Noncharacter_Code_Point, func(r rune) {
+		fn(r, BN) // Boundary Neutral
+	})
+	ucd.Parse(gen.OpenUCDFile("DerivedCoreProperties.txt"), func(p *ucd.Parser) {
+		if p.String(1) == "Default_Ignorable_Code_Point" {
+			fn(p.Rune(0), BN) // Boundary Neutral
+		}
+	})
+}
+
+func visitRunes(fn func(r rune, c Class), c Class, runes []rune) {
+	for i := 0; i < len(runes); i += 2 {
+		lo, hi := runes[i], runes[i+1]
+		for j := lo; j <= hi; j++ {
+			fn(j, c)
+		}
+	}
+}
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go b/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go
new file mode 100644
index 0000000..9cb9942
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go
@@ -0,0 +1,64 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+package main
+
+// Class is the Unicode BiDi class. Each rune has a single class.
+type Class uint
+
+const (
+	L       Class = iota // LeftToRight
+	R                    // RightToLeft
+	EN                   // EuropeanNumber
+	ES                   // EuropeanSeparator
+	ET                   // EuropeanTerminator
+	AN                   // ArabicNumber
+	CS                   // CommonSeparator
+	B                    // ParagraphSeparator
+	S                    // SegmentSeparator
+	WS                   // WhiteSpace
+	ON                   // OtherNeutral
+	BN                   // BoundaryNeutral
+	NSM                  // NonspacingMark
+	AL                   // ArabicLetter
+	Control              // Control LRO - PDI
+
+	numClass
+
+	LRO // LeftToRightOverride
+	RLO // RightToLeftOverride
+	LRE // LeftToRightEmbedding
+	RLE // RightToLeftEmbedding
+	PDF // PopDirectionalFormat
+	LRI // LeftToRightIsolate
+	RLI // RightToLeftIsolate
+	FSI // FirstStrongIsolate
+	PDI // PopDirectionalIsolate
+
+	unknownClass = ^Class(0)
+)
+
+var controlToClass = map[rune]Class{
+	0x202D: LRO, // LeftToRightOverride,
+	0x202E: RLO, // RightToLeftOverride,
+	0x202A: LRE, // LeftToRightEmbedding,
+	0x202B: RLE, // RightToLeftEmbedding,
+	0x202C: PDF, // PopDirectionalFormat,
+	0x2066: LRI, // LeftToRightIsolate,
+	0x2067: RLI, // RightToLeftIsolate,
+	0x2068: FSI, // FirstStrongIsolate,
+	0x2069: PDI, // PopDirectionalIsolate,
+}
+
+// A trie entry has the following bits:
+// 7..5  XOR mask for brackets
+// 4     1: Bracket open, 0: Bracket close
+// 3..0  Class type
+
+const (
+	openMask     = 0x10
+	xorMaskShift = 5
+)
diff --git a/vendor/golang.org/x/text/unicode/norm/maketables.go b/vendor/golang.org/x/text/unicode/norm/maketables.go
new file mode 100644
index 0000000..30a3aa9
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/norm/maketables.go
@@ -0,0 +1,986 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// Normalization table generator.
+// Data read from the web.
+// See forminfo.go for a description of the trie values associated with each rune.
+
+package main
+
+import (
+	"bytes"
+	"encoding/binary"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"sort"
+	"strconv"
+	"strings"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/triegen"
+	"golang.org/x/text/internal/ucd"
+)
+
+func main() {
+	gen.Init()
+	loadUnicodeData()
+	compactCCC()
+	loadCompositionExclusions()
+	completeCharFields(FCanonical)
+	completeCharFields(FCompatibility)
+	computeNonStarterCounts()
+	verifyComputed()
+	printChars()
+	testDerived()
+	printTestdata()
+	makeTables()
+}
+
+var (
+	tablelist = flag.String("tables",
+		"all",
+		"comma-separated list of which tables to generate; "+
+			"can be 'decomp', 'recomp', 'info' and 'all'")
+	test = flag.Bool("test",
+		false,
+		"test existing tables against DerivedNormalizationProps and generate test data for regression testing")
+	verbose = flag.Bool("verbose",
+		false,
+		"write data to stdout as it is parsed")
+)
+
+const MaxChar = 0x10FFFF // anything above this shouldn't exist
+
+// Quick Check properties of runes allow us to quickly
+// determine whether a rune may occur in a normal form.
+// For a given normal form, a rune may be guaranteed to occur
+// verbatim (QC=Yes), may or may not combine with another
+// rune (QC=Maybe), or may not occur (QC=No).
+type QCResult int
+
+const (
+	QCUnknown QCResult = iota
+	QCYes
+	QCNo
+	QCMaybe
+)
+
+func (r QCResult) String() string {
+	switch r {
+	case QCYes:
+		return "Yes"
+	case QCNo:
+		return "No"
+	case QCMaybe:
+		return "Maybe"
+	}
+	return "***UNKNOWN***"
+}
+
+const (
+	FCanonical     = iota // NFC or NFD
+	FCompatibility        // NFKC or NFKD
+	FNumberOfFormTypes
+)
+
+const (
+	MComposed   = iota // NFC or NFKC
+	MDecomposed        // NFD or NFKD
+	MNumberOfModes
+)
+
+// This contains only the properties we're interested in.
+type Char struct {
+	name          string
+	codePoint     rune  // if zero, this index is not a valid code point.
+	ccc           uint8 // canonical combining class
+	origCCC       uint8
+	excludeInComp bool // from CompositionExclusions.txt
+	compatDecomp  bool // it has a compatibility expansion
+
+	nTrailingNonStarters uint8
+	nLeadingNonStarters  uint8 // must be equal to trailing if non-zero
+
+	forms [FNumberOfFormTypes]FormInfo // For FCanonical and FCompatibility
+
+	state State
+}
+
+var chars = make([]Char, MaxChar+1)
+var cccMap = make(map[uint8]uint8)
+
+func (c Char) String() string {
+	buf := new(bytes.Buffer)
+
+	fmt.Fprintf(buf, "%U [%s]:\n", c.codePoint, c.name)
+	fmt.Fprintf(buf, "  ccc: %v\n", c.ccc)
+	fmt.Fprintf(buf, "  excludeInComp: %v\n", c.excludeInComp)
+	fmt.Fprintf(buf, "  compatDecomp: %v\n", c.compatDecomp)
+	fmt.Fprintf(buf, "  state: %v\n", c.state)
+	fmt.Fprintf(buf, "  NFC:\n")
+	fmt.Fprint(buf, c.forms[FCanonical])
+	fmt.Fprintf(buf, "  NFKC:\n")
+	fmt.Fprint(buf, c.forms[FCompatibility])
+
+	return buf.String()
+}
+
+// In UnicodeData.txt, some ranges are marked like this:
+//	3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
+//	4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
+// parseCharacter keeps a state variable indicating the weirdness.
+type State int
+
+const (
+	SNormal State = iota // known to be zero for the type
+	SFirst
+	SLast
+	SMissing
+)
+
+var lastChar = rune('\u0000')
+
+func (c Char) isValid() bool {
+	return c.codePoint != 0 && c.state != SMissing
+}
+
+type FormInfo struct {
+	quickCheck [MNumberOfModes]QCResult // index: MComposed or MDecomposed
+	verified   [MNumberOfModes]bool     // index: MComposed or MDecomposed
+
+	combinesForward  bool // May combine with rune on the right
+	combinesBackward bool // May combine with rune on the left
+	isOneWay         bool // Never appears in result
+	inDecomp         bool // Some decompositions result in this char.
+	decomp           Decomposition
+	expandedDecomp   Decomposition
+}
+
+func (f FormInfo) String() string {
+	buf := bytes.NewBuffer(make([]byte, 0))
+
+	fmt.Fprintf(buf, "    quickCheck[C]: %v\n", f.quickCheck[MComposed])
+	fmt.Fprintf(buf, "    quickCheck[D]: %v\n", f.quickCheck[MDecomposed])
+	fmt.Fprintf(buf, "    cmbForward: %v\n", f.combinesForward)
+	fmt.Fprintf(buf, "    cmbBackward: %v\n", f.combinesBackward)
+	fmt.Fprintf(buf, "    isOneWay: %v\n", f.isOneWay)
+	fmt.Fprintf(buf, "    inDecomp: %v\n", f.inDecomp)
+	fmt.Fprintf(buf, "    decomposition: %X\n", f.decomp)
+	fmt.Fprintf(buf, "    expandedDecomp: %X\n", f.expandedDecomp)
+
+	return buf.String()
+}
+
+type Decomposition []rune
+
+func parseDecomposition(s string, skipfirst bool) (a []rune, err error) {
+	decomp := strings.Split(s, " ")
+	if len(decomp) > 0 && skipfirst {
+		decomp = decomp[1:]
+	}
+	for _, d := range decomp {
+		point, err := strconv.ParseUint(d, 16, 64)
+		if err != nil {
+			return a, err
+		}
+		a = append(a, rune(point))
+	}
+	return a, nil
+}
+
+func loadUnicodeData() {
+	f := gen.OpenUCDFile("UnicodeData.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(ucd.CodePoint)
+		char := &chars[r]
+
+		char.ccc = uint8(p.Uint(ucd.CanonicalCombiningClass))
+		decmap := p.String(ucd.DecompMapping)
+
+		exp, err := parseDecomposition(decmap, false)
+		isCompat := false
+		if err != nil {
+			if len(decmap) > 0 {
+				exp, err = parseDecomposition(decmap, true)
+				if err != nil {
+					log.Fatalf(`%U: bad decomp |%v|: "%s"`, r, decmap, err)
+				}
+				isCompat = true
+			}
+		}
+
+		char.name = p.String(ucd.Name)
+		char.codePoint = r
+		char.forms[FCompatibility].decomp = exp
+		if !isCompat {
+			char.forms[FCanonical].decomp = exp
+		} else {
+			char.compatDecomp = true
+		}
+		if len(decmap) > 0 {
+			char.forms[FCompatibility].decomp = exp
+		}
+	}
+	if err := p.Err(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+// compactCCC converts the sparse set of CCC values to a continguous one,
+// reducing the number of bits needed from 8 to 6.
+func compactCCC() {
+	m := make(map[uint8]uint8)
+	for i := range chars {
+		c := &chars[i]
+		m[c.ccc] = 0
+	}
+	cccs := []int{}
+	for v, _ := range m {
+		cccs = append(cccs, int(v))
+	}
+	sort.Ints(cccs)
+	for i, c := range cccs {
+		cccMap[uint8(i)] = uint8(c)
+		m[uint8(c)] = uint8(i)
+	}
+	for i := range chars {
+		c := &chars[i]
+		c.origCCC = c.ccc
+		c.ccc = m[c.ccc]
+	}
+	if len(m) >= 1<<6 {
+		log.Fatalf("too many difference CCC values: %d >= 64", len(m))
+	}
+}
+
+// CompositionExclusions.txt has form:
+// 0958    # ...
+// See https://unicode.org/reports/tr44/ for full explanation
+func loadCompositionExclusions() {
+	f := gen.OpenUCDFile("CompositionExclusions.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		c := &chars[p.Rune(0)]
+		if c.excludeInComp {
+			log.Fatalf("%U: Duplicate entry in exclusions.", c.codePoint)
+		}
+		c.excludeInComp = true
+	}
+	if e := p.Err(); e != nil {
+		log.Fatal(e)
+	}
+}
+
+// hasCompatDecomp returns true if any of the recursive
+// decompositions contains a compatibility expansion.
+// In this case, the character may not occur in NFK*.
+func hasCompatDecomp(r rune) bool {
+	c := &chars[r]
+	if c.compatDecomp {
+		return true
+	}
+	for _, d := range c.forms[FCompatibility].decomp {
+		if hasCompatDecomp(d) {
+			return true
+		}
+	}
+	return false
+}
+
+// Hangul related constants.
+const (
+	HangulBase = 0xAC00
+	HangulEnd  = 0xD7A4 // hangulBase + Jamo combinations (19 * 21 * 28)
+
+	JamoLBase = 0x1100
+	JamoLEnd  = 0x1113
+	JamoVBase = 0x1161
+	JamoVEnd  = 0x1176
+	JamoTBase = 0x11A8
+	JamoTEnd  = 0x11C3
+
+	JamoLVTCount = 19 * 21 * 28
+	JamoTCount   = 28
+)
+
+func isHangul(r rune) bool {
+	return HangulBase <= r && r < HangulEnd
+}
+
+func isHangulWithoutJamoT(r rune) bool {
+	if !isHangul(r) {
+		return false
+	}
+	r -= HangulBase
+	return r < JamoLVTCount && r%JamoTCount == 0
+}
+
+func ccc(r rune) uint8 {
+	return chars[r].ccc
+}
+
+// Insert a rune in a buffer, ordered by Canonical Combining Class.
+func insertOrdered(b Decomposition, r rune) Decomposition {
+	n := len(b)
+	b = append(b, 0)
+	cc := ccc(r)
+	if cc > 0 {
+		// Use bubble sort.
+		for ; n > 0; n-- {
+			if ccc(b[n-1]) <= cc {
+				break
+			}
+			b[n] = b[n-1]
+		}
+	}
+	b[n] = r
+	return b
+}
+
+// Recursively decompose.
+func decomposeRecursive(form int, r rune, d Decomposition) Decomposition {
+	dcomp := chars[r].forms[form].decomp
+	if len(dcomp) == 0 {
+		return insertOrdered(d, r)
+	}
+	for _, c := range dcomp {
+		d = decomposeRecursive(form, c, d)
+	}
+	return d
+}
+
+func completeCharFields(form int) {
+	// Phase 0: pre-expand decomposition.
+	for i := range chars {
+		f := &chars[i].forms[form]
+		if len(f.decomp) == 0 {
+			continue
+		}
+		exp := make(Decomposition, 0)
+		for _, c := range f.decomp {
+			exp = decomposeRecursive(form, c, exp)
+		}
+		f.expandedDecomp = exp
+	}
+
+	// Phase 1: composition exclusion, mark decomposition.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		// Marks script-specific exclusions and version restricted.
+		f.isOneWay = c.excludeInComp
+
+		// Singletons
+		f.isOneWay = f.isOneWay || len(f.decomp) == 1
+
+		// Non-starter decompositions
+		if len(f.decomp) > 1 {
+			chk := c.ccc != 0 || chars[f.decomp[0]].ccc != 0
+			f.isOneWay = f.isOneWay || chk
+		}
+
+		// Runes that decompose into more than two runes.
+		f.isOneWay = f.isOneWay || len(f.decomp) > 2
+
+		if form == FCompatibility {
+			f.isOneWay = f.isOneWay || hasCompatDecomp(c.codePoint)
+		}
+
+		for _, r := range f.decomp {
+			chars[r].forms[form].inDecomp = true
+		}
+	}
+
+	// Phase 2: forward and backward combining.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		if !f.isOneWay && len(f.decomp) == 2 {
+			f0 := &chars[f.decomp[0]].forms[form]
+			f1 := &chars[f.decomp[1]].forms[form]
+			if !f0.isOneWay {
+				f0.combinesForward = true
+			}
+			if !f1.isOneWay {
+				f1.combinesBackward = true
+			}
+		}
+		if isHangulWithoutJamoT(rune(i)) {
+			f.combinesForward = true
+		}
+	}
+
+	// Phase 3: quick check values.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		switch {
+		case len(f.decomp) > 0:
+			f.quickCheck[MDecomposed] = QCNo
+		case isHangul(rune(i)):
+			f.quickCheck[MDecomposed] = QCNo
+		default:
+			f.quickCheck[MDecomposed] = QCYes
+		}
+		switch {
+		case f.isOneWay:
+			f.quickCheck[MComposed] = QCNo
+		case (i & 0xffff00) == JamoLBase:
+			f.quickCheck[MComposed] = QCYes
+			if JamoLBase <= i && i < JamoLEnd {
+				f.combinesForward = true
+			}
+			if JamoVBase <= i && i < JamoVEnd {
+				f.quickCheck[MComposed] = QCMaybe
+				f.combinesBackward = true
+				f.combinesForward = true
+			}
+			if JamoTBase <= i && i < JamoTEnd {
+				f.quickCheck[MComposed] = QCMaybe
+				f.combinesBackward = true
+			}
+		case !f.combinesBackward:
+			f.quickCheck[MComposed] = QCYes
+		default:
+			f.quickCheck[MComposed] = QCMaybe
+		}
+	}
+}
+
+func computeNonStarterCounts() {
+	// Phase 4: leading and trailing non-starter count
+	for i := range chars {
+		c := &chars[i]
+
+		runes := []rune{rune(i)}
+		// We always use FCompatibility so that the CGJ insertion points do not
+		// change for repeated normalizations with different forms.
+		if exp := c.forms[FCompatibility].expandedDecomp; len(exp) > 0 {
+			runes = exp
+		}
+		// We consider runes that combine backwards to be non-starters for the
+		// purpose of Stream-Safe Text Processing.
+		for _, r := range runes {
+			if cr := &chars[r]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
+				break
+			}
+			c.nLeadingNonStarters++
+		}
+		for i := len(runes) - 1; i >= 0; i-- {
+			if cr := &chars[runes[i]]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
+				break
+			}
+			c.nTrailingNonStarters++
+		}
+		if c.nTrailingNonStarters > 3 {
+			log.Fatalf("%U: Decomposition with more than 3 (%d) trailing modifiers (%U)", i, c.nTrailingNonStarters, runes)
+		}
+
+		if isHangul(rune(i)) {
+			c.nTrailingNonStarters = 2
+			if isHangulWithoutJamoT(rune(i)) {
+				c.nTrailingNonStarters = 1
+			}
+		}
+
+		if l, t := c.nLeadingNonStarters, c.nTrailingNonStarters; l > 0 && l != t {
+			log.Fatalf("%U: number of leading and trailing non-starters should be equal (%d vs %d)", i, l, t)
+		}
+		if t := c.nTrailingNonStarters; t > 3 {
+			log.Fatalf("%U: number of trailing non-starters is %d > 3", t)
+		}
+	}
+}
+
+func printBytes(w io.Writer, b []byte, name string) {
+	fmt.Fprintf(w, "// %s: %d bytes\n", name, len(b))
+	fmt.Fprintf(w, "var %s = [...]byte {", name)
+	for i, c := range b {
+		switch {
+		case i%64 == 0:
+			fmt.Fprintf(w, "\n// Bytes %x - %x\n", i, i+63)
+		case i%8 == 0:
+			fmt.Fprintf(w, "\n")
+		}
+		fmt.Fprintf(w, "0x%.2X, ", c)
+	}
+	fmt.Fprint(w, "\n}\n\n")
+}
+
+// See forminfo.go for format.
+func makeEntry(f *FormInfo, c *Char) uint16 {
+	e := uint16(0)
+	if r := c.codePoint; HangulBase <= r && r < HangulEnd {
+		e |= 0x40
+	}
+	if f.combinesForward {
+		e |= 0x20
+	}
+	if f.quickCheck[MDecomposed] == QCNo {
+		e |= 0x4
+	}
+	switch f.quickCheck[MComposed] {
+	case QCYes:
+	case QCNo:
+		e |= 0x10
+	case QCMaybe:
+		e |= 0x18
+	default:
+		log.Fatalf("Illegal quickcheck value %v.", f.quickCheck[MComposed])
+	}
+	e |= uint16(c.nTrailingNonStarters)
+	return e
+}
+
+// decompSet keeps track of unique decompositions, grouped by whether
+// the decomposition is followed by a trailing and/or leading CCC.
+type decompSet [7]map[string]bool
+
+const (
+	normalDecomp = iota
+	firstMulti
+	firstCCC
+	endMulti
+	firstLeadingCCC
+	firstCCCZeroExcept
+	firstStarterWithNLead
+	lastDecomp
+)
+
+var cname = []string{"firstMulti", "firstCCC", "endMulti", "firstLeadingCCC", "firstCCCZeroExcept", "firstStarterWithNLead", "lastDecomp"}
+
+func makeDecompSet() decompSet {
+	m := decompSet{}
+	for i := range m {
+		m[i] = make(map[string]bool)
+	}
+	return m
+}
+func (m *decompSet) insert(key int, s string) {
+	m[key][s] = true
+}
+
+func printCharInfoTables(w io.Writer) int {
+	mkstr := func(r rune, f *FormInfo) (int, string) {
+		d := f.expandedDecomp
+		s := string([]rune(d))
+		if max := 1 << 6; len(s) >= max {
+			const msg = "%U: too many bytes in decomposition: %d >= %d"
+			log.Fatalf(msg, r, len(s), max)
+		}
+		head := uint8(len(s))
+		if f.quickCheck[MComposed] != QCYes {
+			head |= 0x40
+		}
+		if f.combinesForward {
+			head |= 0x80
+		}
+		s = string([]byte{head}) + s
+
+		lccc := ccc(d[0])
+		tccc := ccc(d[len(d)-1])
+		cc := ccc(r)
+		if cc != 0 && lccc == 0 && tccc == 0 {
+			log.Fatalf("%U: trailing and leading ccc are 0 for non-zero ccc %d", r, cc)
+		}
+		if tccc < lccc && lccc != 0 {
+			const msg = "%U: lccc (%d) must be <= tcc (%d)"
+			log.Fatalf(msg, r, lccc, tccc)
+		}
+		index := normalDecomp
+		nTrail := chars[r].nTrailingNonStarters
+		nLead := chars[r].nLeadingNonStarters
+		if tccc > 0 || lccc > 0 || nTrail > 0 {
+			tccc <<= 2
+			tccc |= nTrail
+			s += string([]byte{tccc})
+			index = endMulti
+			for _, r := range d[1:] {
+				if ccc(r) == 0 {
+					index = firstCCC
+				}
+			}
+			if lccc > 0 || nLead > 0 {
+				s += string([]byte{lccc})
+				if index == firstCCC {
+					log.Fatalf("%U: multi-segment decomposition not supported for decompositions with leading CCC != 0", r)
+				}
+				index = firstLeadingCCC
+			}
+			if cc != lccc {
+				if cc != 0 {
+					log.Fatalf("%U: for lccc != ccc, expected ccc to be 0; was %d", r, cc)
+				}
+				index = firstCCCZeroExcept
+			}
+		} else if len(d) > 1 {
+			index = firstMulti
+		}
+		return index, s
+	}
+
+	decompSet := makeDecompSet()
+	const nLeadStr = "\x00\x01" // 0-byte length and tccc with nTrail.
+	decompSet.insert(firstStarterWithNLead, nLeadStr)
+
+	// Store the uniqued decompositions in a byte buffer,
+	// preceded by their byte length.
+	for _, c := range chars {
+		for _, f := range c.forms {
+			if len(f.expandedDecomp) == 0 {
+				continue
+			}
+			if f.combinesBackward {
+				log.Fatalf("%U: combinesBackward and decompose", c.codePoint)
+			}
+			index, s := mkstr(c.codePoint, &f)
+			decompSet.insert(index, s)
+		}
+	}
+
+	decompositions := bytes.NewBuffer(make([]byte, 0, 10000))
+	size := 0
+	positionMap := make(map[string]uint16)
+	decompositions.WriteString("\000")
+	fmt.Fprintln(w, "const (")
+	for i, m := range decompSet {
+		sa := []string{}
+		for s := range m {
+			sa = append(sa, s)
+		}
+		sort.Strings(sa)
+		for _, s := range sa {
+			p := decompositions.Len()
+			decompositions.WriteString(s)
+			positionMap[s] = uint16(p)
+		}
+		if cname[i] != "" {
+			fmt.Fprintf(w, "%s = 0x%X\n", cname[i], decompositions.Len())
+		}
+	}
+	fmt.Fprintln(w, "maxDecomp = 0x8000")
+	fmt.Fprintln(w, ")")
+	b := decompositions.Bytes()
+	printBytes(w, b, "decomps")
+	size += len(b)
+
+	varnames := []string{"nfc", "nfkc"}
+	for i := 0; i < FNumberOfFormTypes; i++ {
+		trie := triegen.NewTrie(varnames[i])
+
+		for r, c := range chars {
+			f := c.forms[i]
+			d := f.expandedDecomp
+			if len(d) != 0 {
+				_, key := mkstr(c.codePoint, &f)
+				trie.Insert(rune(r), uint64(positionMap[key]))
+				if c.ccc != ccc(d[0]) {
+					// We assume the lead ccc of a decomposition !=0 in this case.
+					if ccc(d[0]) == 0 {
+						log.Fatalf("Expected leading CCC to be non-zero; ccc is %d", c.ccc)
+					}
+				}
+			} else if c.nLeadingNonStarters > 0 && len(f.expandedDecomp) == 0 && c.ccc == 0 && !f.combinesBackward {
+				// Handle cases where it can't be detected that the nLead should be equal
+				// to nTrail.
+				trie.Insert(c.codePoint, uint64(positionMap[nLeadStr]))
+			} else if v := makeEntry(&f, &c)<<8 | uint16(c.ccc); v != 0 {
+				trie.Insert(c.codePoint, uint64(0x8000|v))
+			}
+		}
+		sz, err := trie.Gen(w, triegen.Compact(&normCompacter{name: varnames[i]}))
+		if err != nil {
+			log.Fatal(err)
+		}
+		size += sz
+	}
+	return size
+}
+
+func contains(sa []string, s string) bool {
+	for _, a := range sa {
+		if a == s {
+			return true
+		}
+	}
+	return false
+}
+
+func makeTables() {
+	w := &bytes.Buffer{}
+
+	size := 0
+	if *tablelist == "" {
+		return
+	}
+	list := strings.Split(*tablelist, ",")
+	if *tablelist == "all" {
+		list = []string{"recomp", "info"}
+	}
+
+	// Compute maximum decomposition size.
+	max := 0
+	for _, c := range chars {
+		if n := len(string(c.forms[FCompatibility].expandedDecomp)); n > max {
+			max = n
+		}
+	}
+	fmt.Fprintln(w, `import "sync"`)
+	fmt.Fprintln(w)
+
+	fmt.Fprintln(w, "const (")
+	fmt.Fprintln(w, "\t// Version is the Unicode edition from which the tables are derived.")
+	fmt.Fprintf(w, "\tVersion = %q\n", gen.UnicodeVersion())
+	fmt.Fprintln(w)
+	fmt.Fprintln(w, "\t// MaxTransformChunkSize indicates the maximum number of bytes that Transform")
+	fmt.Fprintln(w, "\t// may need to write atomically for any Form. Making a destination buffer at")
+	fmt.Fprintln(w, "\t// least this size ensures that Transform can always make progress and that")
+	fmt.Fprintln(w, "\t// the user does not need to grow the buffer on an ErrShortDst.")
+	fmt.Fprintf(w, "\tMaxTransformChunkSize = %d+maxNonStarters*4\n", len(string(0x034F))+max)
+	fmt.Fprintln(w, ")\n")
+
+	// Print the CCC remap table.
+	size += len(cccMap)
+	fmt.Fprintf(w, "var ccc = [%d]uint8{", len(cccMap))
+	for i := 0; i < len(cccMap); i++ {
+		if i%8 == 0 {
+			fmt.Fprintln(w)
+		}
+		fmt.Fprintf(w, "%3d, ", cccMap[uint8(i)])
+	}
+	fmt.Fprintln(w, "\n}\n")
+
+	if contains(list, "info") {
+		size += printCharInfoTables(w)
+	}
+
+	if contains(list, "recomp") {
+		// Note that we use 32 bit keys, instead of 64 bit.
+		// This clips the bits of three entries, but we know
+		// this won't cause a collision. The compiler will catch
+		// any changes made to UnicodeData.txt that introduces
+		// a collision.
+		// Note that the recomposition map for NFC and NFKC
+		// are identical.
+
+		// Recomposition map
+		nrentries := 0
+		for _, c := range chars {
+			f := c.forms[FCanonical]
+			if !f.isOneWay && len(f.decomp) > 0 {
+				nrentries++
+			}
+		}
+		sz := nrentries * 8
+		size += sz
+		fmt.Fprintf(w, "// recompMap: %d bytes (entries only)\n", sz)
+		fmt.Fprintln(w, "var recompMap map[uint32]rune")
+		fmt.Fprintln(w, "var recompMapOnce sync.Once\n")
+		fmt.Fprintln(w, `const recompMapPacked = "" +`)
+		var buf [8]byte
+		for i, c := range chars {
+			f := c.forms[FCanonical]
+			d := f.decomp
+			if !f.isOneWay && len(d) > 0 {
+				key := uint32(uint16(d[0]))<<16 + uint32(uint16(d[1]))
+				binary.BigEndian.PutUint32(buf[:4], key)
+				binary.BigEndian.PutUint32(buf[4:], uint32(i))
+				fmt.Fprintf(w, "\t\t%q + // 0x%.8X: 0x%.8X\n", string(buf[:]), key, uint32(i))
+			}
+		}
+		// hack so we don't have to special case the trailing plus sign
+		fmt.Fprintf(w, `	""`)
+		fmt.Fprintln(w)
+	}
+
+	fmt.Fprintf(w, "// Total size of tables: %dKB (%d bytes)\n", (size+512)/1024, size)
+	gen.WriteVersionedGoFile("tables.go", "norm", w.Bytes())
+}
+
+func printChars() {
+	if *verbose {
+		for _, c := range chars {
+			if !c.isValid() || c.state == SMissing {
+				continue
+			}
+			fmt.Println(c)
+		}
+	}
+}
+
+// verifyComputed does various consistency tests.
+func verifyComputed() {
+	for i, c := range chars {
+		for _, f := range c.forms {
+			isNo := (f.quickCheck[MDecomposed] == QCNo)
+			if (len(f.decomp) > 0) != isNo && !isHangul(rune(i)) {
+				log.Fatalf("%U: NF*D QC must be No if rune decomposes", i)
+			}
+
+			isMaybe := f.quickCheck[MComposed] == QCMaybe
+			if f.combinesBackward != isMaybe {
+				log.Fatalf("%U: NF*C QC must be Maybe if combinesBackward", i)
+			}
+			if len(f.decomp) > 0 && f.combinesForward && isMaybe {
+				log.Fatalf("%U: NF*C QC must be Yes or No if combinesForward and decomposes", i)
+			}
+
+			if len(f.expandedDecomp) != 0 {
+				continue
+			}
+			if a, b := c.nLeadingNonStarters > 0, (c.ccc > 0 || f.combinesBackward); a != b {
+				// We accept these runes to be treated differently (it only affects
+				// segment breaking in iteration, most likely on improper use), but
+				// reconsider if more characters are added.
+				// U+FF9E HALFWIDTH KATAKANA VOICED SOUND MARK;Lm;0;L;<narrow> 3099;;;;N;;;;;
+				// U+FF9F HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK;Lm;0;L;<narrow> 309A;;;;N;;;;;
+				// U+3133 HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<compat> 11AA;;;;N;HANGUL LETTER GIYEOG SIOS;;;;
+				// U+318E HANGUL LETTER ARAEAE;Lo;0;L;<compat> 11A1;;;;N;HANGUL LETTER ALAE AE;;;;
+				// U+FFA3 HALFWIDTH HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<narrow> 3133;;;;N;HALFWIDTH HANGUL LETTER GIYEOG SIOS;;;;
+				// U+FFDC HALFWIDTH HANGUL LETTER I;Lo;0;L;<narrow> 3163;;;;N;;;;;
+				if i != 0xFF9E && i != 0xFF9F && !(0x3133 <= i && i <= 0x318E) && !(0xFFA3 <= i && i <= 0xFFDC) {
+					log.Fatalf("%U: nLead was %v; want %v", i, a, b)
+				}
+			}
+		}
+		nfc := c.forms[FCanonical]
+		nfkc := c.forms[FCompatibility]
+		if nfc.combinesBackward != nfkc.combinesBackward {
+			log.Fatalf("%U: Cannot combine combinesBackward\n", c.codePoint)
+		}
+	}
+}
+
+// Use values in DerivedNormalizationProps.txt to compare against the
+// values we computed.
+// DerivedNormalizationProps.txt has form:
+// 00C0..00C5    ; NFD_QC; N # ...
+// 0374          ; NFD_QC; N # ...
+// See https://unicode.org/reports/tr44/ for full explanation
+func testDerived() {
+	f := gen.OpenUCDFile("DerivedNormalizationProps.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(0)
+		c := &chars[r]
+
+		var ftype, mode int
+		qt := p.String(1)
+		switch qt {
+		case "NFC_QC":
+			ftype, mode = FCanonical, MComposed
+		case "NFD_QC":
+			ftype, mode = FCanonical, MDecomposed
+		case "NFKC_QC":
+			ftype, mode = FCompatibility, MComposed
+		case "NFKD_QC":
+			ftype, mode = FCompatibility, MDecomposed
+		default:
+			continue
+		}
+		var qr QCResult
+		switch p.String(2) {
+		case "Y":
+			qr = QCYes
+		case "N":
+			qr = QCNo
+		case "M":
+			qr = QCMaybe
+		default:
+			log.Fatalf(`Unexpected quick check value "%s"`, p.String(2))
+		}
+		if got := c.forms[ftype].quickCheck[mode]; got != qr {
+			log.Printf("%U: FAILED %s (was %v need %v)\n", r, qt, got, qr)
+		}
+		c.forms[ftype].verified[mode] = true
+	}
+	if err := p.Err(); err != nil {
+		log.Fatal(err)
+	}
+	// Any unspecified value must be QCYes. Verify this.
+	for i, c := range chars {
+		for j, fd := range c.forms {
+			for k, qr := range fd.quickCheck {
+				if !fd.verified[k] && qr != QCYes {
+					m := "%U: FAIL F:%d M:%d (was %v need Yes) %s\n"
+					log.Printf(m, i, j, k, qr, c.name)
+				}
+			}
+		}
+	}
+}
+
+var testHeader = `const (
+	Yes = iota
+	No
+	Maybe
+)
+
+type formData struct {
+	qc              uint8
+	combinesForward bool
+	decomposition   string
+}
+
+type runeData struct {
+	r      rune
+	ccc    uint8
+	nLead  uint8
+	nTrail uint8
+	f      [2]formData // 0: canonical; 1: compatibility
+}
+
+func f(qc uint8, cf bool, dec string) [2]formData {
+	return [2]formData{{qc, cf, dec}, {qc, cf, dec}}
+}
+
+func g(qc, qck uint8, cf, cfk bool, d, dk string) [2]formData {
+	return [2]formData{{qc, cf, d}, {qck, cfk, dk}}
+}
+
+var testData = []runeData{
+`
+
+func printTestdata() {
+	type lastInfo struct {
+		ccc    uint8
+		nLead  uint8
+		nTrail uint8
+		f      string
+	}
+
+	last := lastInfo{}
+	w := &bytes.Buffer{}
+	fmt.Fprintf(w, testHeader)
+	for r, c := range chars {
+		f := c.forms[FCanonical]
+		qc, cf, d := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
+		f = c.forms[FCompatibility]
+		qck, cfk, dk := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
+		s := ""
+		if d == dk && qc == qck && cf == cfk {
+			s = fmt.Sprintf("f(%s, %v, %q)", qc, cf, d)
+		} else {
+			s = fmt.Sprintf("g(%s, %s, %v, %v, %q, %q)", qc, qck, cf, cfk, d, dk)
+		}
+		current := lastInfo{c.ccc, c.nLeadingNonStarters, c.nTrailingNonStarters, s}
+		if last != current {
+			fmt.Fprintf(w, "\t{0x%x, %d, %d, %d, %s},\n", r, c.origCCC, c.nLeadingNonStarters, c.nTrailingNonStarters, s)
+			last = current
+		}
+	}
+	fmt.Fprintln(w, "}")
+	gen.WriteVersionedGoFile("data_test.go", "norm", w.Bytes())
+}
diff --git a/vendor/golang.org/x/text/unicode/norm/triegen.go b/vendor/golang.org/x/text/unicode/norm/triegen.go
new file mode 100644
index 0000000..45d7119
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/norm/triegen.go
@@ -0,0 +1,117 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// Trie table generator.
+// Used by make*tables tools to generate a go file with trie data structures
+// for mapping UTF-8 to a 16-bit value. All but the last byte in a UTF-8 byte
+// sequence are used to lookup offsets in the index table to be used for the
+// next byte. The last byte is used to index into a table with 16-bit values.
+
+package main
+
+import (
+	"fmt"
+	"io"
+)
+
+const maxSparseEntries = 16
+
+type normCompacter struct {
+	sparseBlocks [][]uint64
+	sparseOffset []uint16
+	sparseCount  int
+	name         string
+}
+
+func mostFrequentStride(a []uint64) int {
+	counts := make(map[int]int)
+	var v int
+	for _, x := range a {
+		if stride := int(x) - v; v != 0 && stride >= 0 {
+			counts[stride]++
+		}
+		v = int(x)
+	}
+	var maxs, maxc int
+	for stride, cnt := range counts {
+		if cnt > maxc || (cnt == maxc && stride < maxs) {
+			maxs, maxc = stride, cnt
+		}
+	}
+	return maxs
+}
+
+func countSparseEntries(a []uint64) int {
+	stride := mostFrequentStride(a)
+	var v, count int
+	for _, tv := range a {
+		if int(tv)-v != stride {
+			if tv != 0 {
+				count++
+			}
+		}
+		v = int(tv)
+	}
+	return count
+}
+
+func (c *normCompacter) Size(v []uint64) (sz int, ok bool) {
+	if n := countSparseEntries(v); n <= maxSparseEntries {
+		return (n+1)*4 + 2, true
+	}
+	return 0, false
+}
+
+func (c *normCompacter) Store(v []uint64) uint32 {
+	h := uint32(len(c.sparseOffset))
+	c.sparseBlocks = append(c.sparseBlocks, v)
+	c.sparseOffset = append(c.sparseOffset, uint16(c.sparseCount))
+	c.sparseCount += countSparseEntries(v) + 1
+	return h
+}
+
+func (c *normCompacter) Handler() string {
+	return c.name + "Sparse.lookup"
+}
+
+func (c *normCompacter) Print(w io.Writer) (retErr error) {
+	p := func(f string, x ...interface{}) {
+		if _, err := fmt.Fprintf(w, f, x...); retErr == nil && err != nil {
+			retErr = err
+		}
+	}
+
+	ls := len(c.sparseBlocks)
+	p("// %sSparseOffset: %d entries, %d bytes\n", c.name, ls, ls*2)
+	p("var %sSparseOffset = %#v\n\n", c.name, c.sparseOffset)
+
+	ns := c.sparseCount
+	p("// %sSparseValues: %d entries, %d bytes\n", c.name, ns, ns*4)
+	p("var %sSparseValues = [%d]valueRange {", c.name, ns)
+	for i, b := range c.sparseBlocks {
+		p("\n// Block %#x, offset %#x", i, c.sparseOffset[i])
+		var v int
+		stride := mostFrequentStride(b)
+		n := countSparseEntries(b)
+		p("\n{value:%#04x,lo:%#02x},", stride, uint8(n))
+		for i, nv := range b {
+			if int(nv)-v != stride {
+				if v != 0 {
+					p(",hi:%#02x},", 0x80+i-1)
+				}
+				if nv != 0 {
+					p("\n{value:%#04x,lo:%#02x", nv, 0x80+i)
+				}
+			}
+			v = int(nv)
+		}
+		if v != 0 {
+			p(",hi:%#02x},", 0x80+len(b)-1)
+		}
+	}
+	p("\n}\n\n")
+	return
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 3bc990b..4bf6230 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -23,17 +23,17 @@
 # github.com/eapache/queue v1.1.0
 github.com/eapache/queue
 # github.com/gogo/protobuf v1.3.0
-github.com/gogo/protobuf/gogoproto
 github.com/gogo/protobuf/proto
+github.com/gogo/protobuf/gogoproto
 github.com/gogo/protobuf/protoc-gen-gogo/descriptor
 # github.com/golang/protobuf v1.3.2
+github.com/golang/protobuf/ptypes/empty
 github.com/golang/protobuf/descriptor
 github.com/golang/protobuf/proto
 github.com/golang/protobuf/protoc-gen-go/descriptor
 github.com/golang/protobuf/ptypes
 github.com/golang/protobuf/ptypes/any
 github.com/golang/protobuf/ptypes/duration
-github.com/golang/protobuf/ptypes/empty
 github.com/golang/protobuf/ptypes/timestamp
 # github.com/golang/snappy v0.0.1
 github.com/golang/snappy
@@ -62,24 +62,24 @@
 github.com/mitchellh/go-homedir
 # github.com/mitchellh/mapstructure v1.1.2
 github.com/mitchellh/mapstructure
-# github.com/opencord/voltha-lib-go/v2 v2.2.10
-github.com/opencord/voltha-lib-go/v2/pkg/adapters
-github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif
-github.com/opencord/voltha-lib-go/v2/pkg/adapters/common
+# github.com/opencord/voltha-lib-go/v2 v2.2.12
+github.com/opencord/voltha-lib-go/v2/pkg/log
 github.com/opencord/voltha-lib-go/v2/pkg/db
 github.com/opencord/voltha-lib-go/v2/pkg/db/kvstore
-github.com/opencord/voltha-lib-go/v2/pkg/flows
 github.com/opencord/voltha-lib-go/v2/pkg/grpc
-github.com/opencord/voltha-lib-go/v2/pkg/kafka
-github.com/opencord/voltha-lib-go/v2/pkg/log
 github.com/opencord/voltha-lib-go/v2/pkg/probe
 github.com/opencord/voltha-lib-go/v2/pkg/version
+github.com/opencord/voltha-lib-go/v2/pkg/kafka
+github.com/opencord/voltha-lib-go/v2/pkg/flows
+github.com/opencord/voltha-lib-go/v2/pkg/adapters/common
+github.com/opencord/voltha-lib-go/v2/pkg/adapters
+github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif
 # github.com/opencord/voltha-protos/v2 v2.0.1
 github.com/opencord/voltha-protos/v2/go/common
+github.com/opencord/voltha-protos/v2/go/voltha
+github.com/opencord/voltha-protos/v2/go/openflow_13
 github.com/opencord/voltha-protos/v2/go/inter_container
 github.com/opencord/voltha-protos/v2/go/omci
-github.com/opencord/voltha-protos/v2/go/openflow_13
-github.com/opencord/voltha-protos/v2/go/voltha
 # github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 github.com/phayes/freeport
 # github.com/pierrec/lz4 v2.3.0+incompatible
@@ -92,20 +92,20 @@
 # github.com/stretchr/testify v1.4.0
 github.com/stretchr/testify/assert
 # go.etcd.io/etcd v0.0.0-20190930204107-236ac2a90522
-go.etcd.io/etcd/auth/authpb
 go.etcd.io/etcd/clientv3
+go.etcd.io/etcd/clientv3/concurrency
+go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes
+go.etcd.io/etcd/auth/authpb
 go.etcd.io/etcd/clientv3/balancer
-go.etcd.io/etcd/clientv3/balancer/connectivity
 go.etcd.io/etcd/clientv3/balancer/picker
 go.etcd.io/etcd/clientv3/balancer/resolver/endpoint
-go.etcd.io/etcd/clientv3/concurrency
 go.etcd.io/etcd/clientv3/credentials
-go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes
 go.etcd.io/etcd/etcdserver/etcdserverpb
 go.etcd.io/etcd/mvcc/mvccpb
 go.etcd.io/etcd/pkg/logutil
-go.etcd.io/etcd/pkg/systemd
 go.etcd.io/etcd/pkg/types
+go.etcd.io/etcd/clientv3/balancer/connectivity
+go.etcd.io/etcd/pkg/systemd
 go.etcd.io/etcd/raft
 go.etcd.io/etcd/raft/confchange
 go.etcd.io/etcd/raft/quorum
@@ -117,44 +117,43 @@
 go.uber.org/multierr
 # go.uber.org/zap v1.10.0
 go.uber.org/zap
-go.uber.org/zap/buffer
+go.uber.org/zap/zapcore
 go.uber.org/zap/internal/bufferpool
+go.uber.org/zap/buffer
 go.uber.org/zap/internal/color
 go.uber.org/zap/internal/exit
-go.uber.org/zap/zapcore
 # golang.org/x/crypto v0.0.0-20191001170739-f9e2070545dc
 golang.org/x/crypto/md4
 golang.org/x/crypto/pbkdf2
 # golang.org/x/net v0.0.0-20190930134127-c5a3c61f89f3
-golang.org/x/net/context
-golang.org/x/net/http/httpguts
+golang.org/x/net/trace
+golang.org/x/net/internal/timeseries
 golang.org/x/net/http2
 golang.org/x/net/http2/hpack
-golang.org/x/net/idna
-golang.org/x/net/internal/socks
-golang.org/x/net/internal/timeseries
 golang.org/x/net/proxy
-golang.org/x/net/trace
+golang.org/x/net/http/httpguts
+golang.org/x/net/idna
+golang.org/x/net/context
+golang.org/x/net/internal/socks
 # golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24
 golang.org/x/sys/unix
 # golang.org/x/text v0.3.2
 golang.org/x/text/secure/bidirule
-golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
 golang.org/x/text/unicode/norm
+golang.org/x/text/transform
 # google.golang.org/genproto v0.0.0-20190927181202-20e1ac93f88c
 google.golang.org/genproto/googleapis/api/annotations
 google.golang.org/genproto/googleapis/rpc/status
 # google.golang.org/grpc v1.24.0
 google.golang.org/grpc
-google.golang.org/grpc/balancer
-google.golang.org/grpc/balancer/base
-google.golang.org/grpc/balancer/roundrobin
-google.golang.org/grpc/binarylog/grpc_binarylog_v1
 google.golang.org/grpc/codes
+google.golang.org/grpc/metadata
+google.golang.org/grpc/status
+google.golang.org/grpc/balancer
+google.golang.org/grpc/balancer/roundrobin
 google.golang.org/grpc/connectivity
 google.golang.org/grpc/credentials
-google.golang.org/grpc/credentials/internal
 google.golang.org/grpc/encoding
 google.golang.org/grpc/encoding/proto
 google.golang.org/grpc/grpclog
@@ -166,10 +165,8 @@
 google.golang.org/grpc/internal/envconfig
 google.golang.org/grpc/internal/grpcrand
 google.golang.org/grpc/internal/grpcsync
-google.golang.org/grpc/internal/syscall
 google.golang.org/grpc/internal/transport
 google.golang.org/grpc/keepalive
-google.golang.org/grpc/metadata
 google.golang.org/grpc/naming
 google.golang.org/grpc/peer
 google.golang.org/grpc/resolver
@@ -177,8 +174,11 @@
 google.golang.org/grpc/resolver/passthrough
 google.golang.org/grpc/serviceconfig
 google.golang.org/grpc/stats
-google.golang.org/grpc/status
 google.golang.org/grpc/tap
+google.golang.org/grpc/balancer/base
+google.golang.org/grpc/credentials/internal
+google.golang.org/grpc/binarylog/grpc_binarylog_v1
+google.golang.org/grpc/internal/syscall
 # gopkg.in/jcmturner/aescts.v1 v1.0.1
 gopkg.in/jcmturner/aescts.v1
 # gopkg.in/jcmturner/dnsutils.v1 v1.0.1
@@ -188,32 +188,32 @@
 gopkg.in/jcmturner/gokrb5.v7/client
 gopkg.in/jcmturner/gokrb5.v7/config
 gopkg.in/jcmturner/gokrb5.v7/credentials
+gopkg.in/jcmturner/gokrb5.v7/gssapi
+gopkg.in/jcmturner/gokrb5.v7/iana/chksumtype
+gopkg.in/jcmturner/gokrb5.v7/iana/keyusage
+gopkg.in/jcmturner/gokrb5.v7/keytab
+gopkg.in/jcmturner/gokrb5.v7/messages
+gopkg.in/jcmturner/gokrb5.v7/types
 gopkg.in/jcmturner/gokrb5.v7/crypto
-gopkg.in/jcmturner/gokrb5.v7/crypto/common
 gopkg.in/jcmturner/gokrb5.v7/crypto/etype
+gopkg.in/jcmturner/gokrb5.v7/iana/errorcode
+gopkg.in/jcmturner/gokrb5.v7/iana/flags
+gopkg.in/jcmturner/gokrb5.v7/iana/nametype
+gopkg.in/jcmturner/gokrb5.v7/iana/patype
+gopkg.in/jcmturner/gokrb5.v7/kadmin
+gopkg.in/jcmturner/gokrb5.v7/krberror
+gopkg.in/jcmturner/gokrb5.v7/iana/etypeID
+gopkg.in/jcmturner/gokrb5.v7/iana
+gopkg.in/jcmturner/gokrb5.v7/iana/adtype
+gopkg.in/jcmturner/gokrb5.v7/iana/asnAppTag
+gopkg.in/jcmturner/gokrb5.v7/iana/msgtype
+gopkg.in/jcmturner/gokrb5.v7/pac
+gopkg.in/jcmturner/gokrb5.v7/iana/addrtype
+gopkg.in/jcmturner/gokrb5.v7/crypto/common
 gopkg.in/jcmturner/gokrb5.v7/crypto/rfc3961
 gopkg.in/jcmturner/gokrb5.v7/crypto/rfc3962
 gopkg.in/jcmturner/gokrb5.v7/crypto/rfc4757
 gopkg.in/jcmturner/gokrb5.v7/crypto/rfc8009
-gopkg.in/jcmturner/gokrb5.v7/gssapi
-gopkg.in/jcmturner/gokrb5.v7/iana
-gopkg.in/jcmturner/gokrb5.v7/iana/addrtype
-gopkg.in/jcmturner/gokrb5.v7/iana/adtype
-gopkg.in/jcmturner/gokrb5.v7/iana/asnAppTag
-gopkg.in/jcmturner/gokrb5.v7/iana/chksumtype
-gopkg.in/jcmturner/gokrb5.v7/iana/errorcode
-gopkg.in/jcmturner/gokrb5.v7/iana/etypeID
-gopkg.in/jcmturner/gokrb5.v7/iana/flags
-gopkg.in/jcmturner/gokrb5.v7/iana/keyusage
-gopkg.in/jcmturner/gokrb5.v7/iana/msgtype
-gopkg.in/jcmturner/gokrb5.v7/iana/nametype
-gopkg.in/jcmturner/gokrb5.v7/iana/patype
-gopkg.in/jcmturner/gokrb5.v7/kadmin
-gopkg.in/jcmturner/gokrb5.v7/keytab
-gopkg.in/jcmturner/gokrb5.v7/krberror
-gopkg.in/jcmturner/gokrb5.v7/messages
-gopkg.in/jcmturner/gokrb5.v7/pac
-gopkg.in/jcmturner/gokrb5.v7/types
 # gopkg.in/jcmturner/rpc.v1 v1.1.0
 gopkg.in/jcmturner/rpc.v1/mstypes
 gopkg.in/jcmturner/rpc.v1/ndr