Fix LayerData not being usable for ComputeStorage package

computestorage/export.go

@@ -28,17 +28,17 @@ func ExportLayer(ctx context.Context, layerPath, exportFolderPath string, layerD
 		trace.StringAttribute("exportFolderPath", exportFolderPath),
 	)
 
-	ldbytes, err := json.Marshal(layerData)
+	ldBytes, err := json.Marshal(layerData)
 	if err != nil {
 		return err
 	}
 
-	obytes, err := json.Marshal(options)
+	oBytes, err := json.Marshal(options)
 	if err != nil {
 		return err
 	}
 
-	err = hcsExportLayer(layerPath, exportFolderPath, string(ldbytes), string(obytes))
+	err = hcsExportLayer(layerPath, exportFolderPath, string(ldBytes), string(oBytes))
 	if err != nil {
 		return errors.Wrap(err, "failed to export layer")
 	}

computestorage/storage.go

@@ -20,10 +20,13 @@ import (
 //sys hcsGetLayerVhdMountPath(vhdHandle windows.Handle, mountPath **uint16) (hr error) = computestorage.HcsGetLayerVhdMountPath?
 //sys hcsSetupBaseOSVolume(layerPath string, volumePath string, options string) (hr error) = computestorage.HcsSetupBaseOSVolume?
 
+type Version = hcsschema.Version
+type Layer = hcsschema.Layer
+
 // LayerData is the data used to describe parent layer information.
 type LayerData struct {
-	SchemaVersion hcsschema.Version `json:"SchemaVersion,omitempty"`
-	Layers        []hcsschema.Layer `json:"Layers,omitempty"`
+	SchemaVersion Version `json:"SchemaVersion,omitempty"`
+	Layers        []Layer `json:"Layers,omitempty"`
 }
 
 // ExportLayerOptions are the set of options that are used with the `computestorage.HcsExportLayer` syscall.