1 files changed, 7 insertions, 0 deletions
diff --git a/src/H5VLpublic.h b/src/H5VLpublic.h
index 75a014b..670a5b7 100644
--- a/src/H5VLpublic.h
+++ b/src/H5VLpublic.h
@@ -283,8 +283,15 @@ typedef struct H5VL_object_class_t {
     herr_t (*close) (void *obj, H5VL_loc_params_t loc_params, hid_t req);
 } H5VL_object_class_t;
 
+/* enum value to identify the class of a VOL plugin (mostly for comparison purposes */
+typedef enum H5VL_class_value_t {
+    NATIVE = 0,
+    DUMMY = 1
+} H5VL_class_value_t;
+
 /* Class information for each VOL driver */
 typedef struct H5VL_class_t {
+    H5VL_class_value_t value;
     const char *name;
     herr_t  (*initialize)(void);
     herr_t  (*terminate)(void);