fix build

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

vendor/github.com/sigma/vmw-guestinfo/message/message.go

@@ -0,0 +1,57 @@
+package message
+
+import (
+	"errors"
+
+	"github.com/sigma/vmw-guestinfo/bridge"
+)
+
+var (
+	// ErrChannelOpen represents a failure to open a channel
+	ErrChannelOpen = errors.New("could not open channel")
+	// ErrChannelClose represents a failure to close a channel
+	ErrChannelClose = errors.New("could not close channel")
+	// ErrRpciSend represents a failure to send a message
+	ErrRpciSend = errors.New("unable to send RPCI command")
+	// ErrRpciReceive represents a failure to receive a message
+	ErrRpciReceive = errors.New("unable to receive RPCI command result")
+)
+
+// Channel is a communication channel between hypervisor and virtual machine
+type Channel struct {
+	privChan bridge.MessageChannel
+}
+
+// NewChannel opens a new channel
+func NewChannel(proto uint32) (*Channel, error) {
+	if channel := bridge.MessageOpen(proto); channel != nil {
+		return &Channel{
+			privChan: channel,
+		}, nil
+	}
+	return nil, ErrChannelOpen
+}
+
+// Close the channel
+func (c *Channel) Close() error {
+	if status := bridge.MessageClose(bridge.MessageChannel(c.privChan)); status {
+		return nil
+	}
+	return ErrChannelClose
+}
+
+// Send a request
+func (c *Channel) Send(request []byte) error {
+	if status := bridge.MessageSend(bridge.MessageChannel(c.privChan), request); status {
+		return nil
+	}
+	return ErrRpciSend
+}
+
+// Receive a response
+func (c *Channel) Receive() ([]byte, error) {
+	if res, status := bridge.MessageReceive(bridge.MessageChannel(c.privChan)); status {
+		return res, nil
+	}
+	return nil, ErrRpciReceive
+}