Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop)

* commit '55e87e5b86aacbb37c57614cd2e869541291caad': (51 commits)
  Correct Windows build.
  Refactor allocating & releasing pass through wrapper objects.
  Fix typo
  Remove duplicated comment.
  Add a couple of missing prototypes for static routines, along with updating a comment from VOL plugin -> connector.
  Switch H5VL_class_value_t from unsigned to int, and add "invalid" ID value.
  Correct "make check-vol" regression test target.
  Switch H5VL_class_value_t from enum to unsigned integer
  Add support for "make check-vol", along with a few minor cleanups, etc.
  Refactor infrastructure for setting FAPL information from environment variables during testing, including connecting native, pass-through, and dynamically loaded VOL connectors.   Also bring native and pass-through VOL connectors into alignment, removing the "H5VLnative_private.h" header.
  Remove example VOL connector, since it's been superceded by the pass-through VOL connector in the src subdirectory.
  Add pass-through VOL connector
  Update API tracing info for VOL functions and regenerate trace macros for VOL API calls.
  Added 'notify' callback for async requests; switched VOL class and info comparison to return comparison value as parameter, so they can return error values; "cancelled" -> "canceled"; switched order of 'wrap_object' and 'free_wrap_ctx' management callbacks.
  Add using FAPL from h5_fileaccess() to more tests.
  Remove unused test for unimplemented routine.
  Switch loc_params to VOL callbacks to pass struct by pointer instead of by value.
  Add info_to_str and str_to_info "management" callbacks for serializing and deserializing a connector's info object.
  Revert some of the changes to support the original property list value of metadata read attempts.
  Add VOL connector info to the flie access property list returned from H5Fget_access_plist().  Also, other misc. cleanups, etc.
  ...

1 files changed, 101 insertions, 65 deletions

diff --git a/src/H5VLprivate.h b/src/H5VLprivate.h
index 003e6f5..ef5a81e 100644
--- a/src/H5VLprivate.h
+++ b/src/H5VLprivate.h
@@ -26,39 +26,50 @@
 /* Library Private Typedefs */
 /****************************/
 
-/* Internal struct to track VOL driver information for objects */
+/* Internal struct to track VOL connector information for objects */
 typedef struct H5VL_t {
-    const H5VL_class_t *cls;            /* Pointer to driver class struct                       */
+    const H5VL_class_t *cls;            /* Pointer to connector class struct                    */
     int64_t             nrefs;          /* Number of references by objects using this struct    */
-    hid_t               id;             /* Identifier for the VOL driver                        */
+    hid_t               id;             /* Identifier for the VOL connector                     */
 } H5VL_t;
 
 /* Internal vol object structure returned to the API */
 typedef struct H5VL_object_t {
-    void               *data;           /* Pointer to driver-managed data for this object       */
-    H5VL_t             *driver;         /* Pointer to VOL driver struct                         */
+    void               *data;           /* Pointer to connector-managed data for this object    */
+    H5VL_t             *connector;      /* Pointer to VOL connector struct                      */
 } H5VL_object_t;
 
-/* Internal structure to hold the driver ID & info for FAPLs */
-typedef struct H5VL_driver_prop_t {
-    hid_t               driver_id;      /* VOL driver's ID                                      */
-    const void         *driver_info;    /* VOL driver info, for open callbacks                  */
-} H5VL_driver_prop_t;
+/* Internal structure to hold the connector ID & info for FAPLs */
+typedef struct H5VL_connector_prop_t {
+    hid_t               connector_id;   /* VOL connector's ID                                   */
+    const void         *connector_info; /* VOL connector info, for open callbacks               */
+} H5VL_connector_prop_t;
+
+/* Which kind of VOL connector field to use for searching */
+typedef enum H5VL_get_connector_kind_t {
+    H5VL_GET_CONNECTOR_BY_NAME,         /* Name field is set */
+    H5VL_GET_CONNECTOR_BY_VALUE         /* Value field is set */
+} H5VL_get_connector_kind_t;
+
 
 /*****************************/
 /* Library Private Variables */
 /*****************************/
 
+
 /******************************/
 /* Library Private Prototypes */
 /******************************/
 
 /* Utility functions */
 H5_DLL herr_t H5VL_init(void);
+H5_DLL herr_t H5VL_cmp_connector_cls(int *cmp_value, const H5VL_class_t *cls1, const H5VL_class_t *cls2);
+H5_DLL herr_t H5VL_conn_copy(H5VL_connector_prop_t *value);
+H5_DLL herr_t H5VL_conn_free(const H5VL_connector_prop_t *info);
 
-/* Functions that deal with VOL drivers */
-H5_DLL hid_t H5VL_register_driver(const void *cls, size_t size, hbool_t app_ref);
-H5_DLL ssize_t H5VL_get_driver_name(hid_t id, char *name/*out*/, size_t size);
+/* Functions that deal with VOL connectors */
+H5_DLL hid_t H5VL_register_connector(const void *cls, hbool_t app_ref, hid_t vipl_id);
+H5_DLL ssize_t H5VL_get_connector_name(hid_t id, char *name/*out*/, size_t size);
 
 /* NOTE:    The object and ID functions below deal in VOL objects (i.e.;
  *          H5VL_object_t). Similar non-VOL calls exist in H5Iprivate.h. Use
@@ -72,78 +83,103 @@ H5_DLL ssize_t H5VL_get_driver_name(hid_t id, char *name/*out*/, size_t size);
 
 /* Functions that manipulate VOL objects */
 H5_DLL void *H5VL_object(hid_t id);
+H5_DLL void *H5VL_object_data(const H5VL_object_t *vol_obj);
 H5_DLL void *H5VL_object_verify(hid_t id, H5I_type_t obj_type);
-H5_DLL void *H5VL_driver_data(H5VL_object_t *obj);
 H5_DLL H5VL_object_t *H5VL_vol_object(hid_t id);
 H5_DLL herr_t H5VL_free_object(H5VL_object_t *obj);
 
+/* Functions that wrap / unwrap VOL objects */
+H5_DLL herr_t H5VL_get_wrap_ctx(const H5VL_class_t *connector, void *obj,
+    void **wrap_ctx);
+H5_DLL herr_t H5VL_free_wrap_ctx(const H5VL_class_t *connector, void *wrap_ctx);
+H5_DLL herr_t H5VL_set_vol_wrapper(void *obj, const H5VL_t *vol_connector);
+H5_DLL herr_t H5VL_reset_vol_wrapper(void);
+H5_DLL void * H5VL_wrap_object(const H5VL_class_t *connector, void *wrap_ctx,
+    void *obj);
+
 /* ID registration functions */
-H5_DLL hid_t H5VL_register(H5I_type_t type, const void *object, H5VL_t *vol_driver, hbool_t app_ref);
-H5_DLL hid_t H5VL_register_using_vol_id(H5I_type_t type, const void *obj, hid_t driver_id, hbool_t app_ref);
-H5_DLL herr_t H5VL_register_using_existing_id(H5I_type_t type, void *object, H5VL_t *vol_driver, hbool_t app_ref, hid_t existing_id);
+H5_DLL hid_t H5VL_register(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t app_ref);
+H5_DLL hid_t H5VL_wrap_register(H5I_type_t type, void *obj, hbool_t app_ref);
+H5_DLL hid_t H5VL_register_using_vol_id(H5I_type_t type, void *obj, hid_t connector_id, hbool_t app_ref);
+H5_DLL herr_t H5VL_register_using_existing_id(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t app_ref, hid_t existing_id);
+
+/**********************************
+ * VOL connector callback wrappers
+ *********************************/
+
+/* Connector "management" functions */
+H5_DLL int H5VL_copy_connector_info(const H5VL_class_t *connector, void **dst_info,
+    const void *src_info);
+H5_DLL herr_t H5VL_cmp_connector_info(const H5VL_class_t *connector, int *cmp_value,
+    const void *info1, const void *info2);
+H5_DLL herr_t H5VL_free_connector_info(const H5VL_class_t *connector, void *info);
 
 /* Attribute functions */
-H5_DLL void *H5VL_attr_create(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *attr_name, hid_t acpl_id, hid_t aapl_id, hid_t dxpl_id, void **req);
-H5_DLL void *H5VL_attr_open(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t aapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_attr_read(void *attr, const H5VL_class_t *cls, hid_t dtype_id, void *buf, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_attr_write(void *attr, const H5VL_class_t *cls, hid_t dtype_id, const void *buf, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_attr_get(void *obj, const H5VL_class_t *cls, H5VL_attr_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_attr_specific(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5VL_attr_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_attr_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_attr_close(void *attr, const H5VL_class_t *cls, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_attr_create(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *attr_name, hid_t acpl_id, hid_t aapl_id, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_attr_open(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t aapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_attr_read(const H5VL_object_t *vol_obj, hid_t dtype_id, void *buf, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_attr_write(const H5VL_object_t *vol_obj, hid_t dtype_id, const void *buf, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_attr_get(const H5VL_object_t *vol_obj, H5VL_attr_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_attr_specific(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, H5VL_attr_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_attr_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_attr_close(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req);
 
 /* Dataset functions */
-H5_DLL void *H5VL_dataset_create(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t dcpl_id, hid_t dapl_id, hid_t dxpl_id, void **req);
-H5_DLL void *H5VL_dataset_open(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t dapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_dataset_read(void *dset, const H5VL_class_t *cls, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, void *buf, void **req);
-H5_DLL herr_t H5VL_dataset_write(void *dset, const H5VL_class_t *cls, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, const void *buf, void **req);
-H5_DLL herr_t H5VL_dataset_get(void *dset, const H5VL_class_t *cls, H5VL_dataset_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_dataset_specific(void *obj, const H5VL_class_t *cls, H5VL_dataset_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_dataset_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_dataset_close(void *dset, const H5VL_class_t *cls, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_dataset_create(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t dcpl_id, hid_t dapl_id, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_dataset_open(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t dapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_dataset_read(const H5VL_object_t *vol_obj, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, void *buf, void **req);
+H5_DLL herr_t H5VL_dataset_write(const H5VL_object_t *vol_obj, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, const void *buf, void **req);
+H5_DLL herr_t H5VL_dataset_get(const H5VL_object_t *vol_obj, H5VL_dataset_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_dataset_specific(const H5VL_object_t *cls, H5VL_dataset_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_dataset_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_dataset_close(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req);
 
 /* File functions */
-H5_DLL void *H5VL_file_create(const H5VL_class_t *cls, const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id, hid_t dxpl_id, void **req);
-H5_DLL void *H5VL_file_open(const H5VL_class_t *cls, const char *name, unsigned flags, hid_t fapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_file_get(void *file, const H5VL_class_t *cls, H5VL_file_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_file_specific(void *obj, const H5VL_class_t *cls, H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_file_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_file_close(void *file, const H5VL_class_t *cls, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_file_create(const H5VL_connector_prop_t *connector_prop, const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_file_open(const H5VL_connector_prop_t *connector_prop, const char *name, unsigned flags, hid_t fapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_file_get(const H5VL_object_t *vol_obj, H5VL_file_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_file_specific(const H5VL_object_t *vol_obj, H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_file_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_file_close(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req);
 
 /* Group functions */
-H5_DLL void *H5VL_group_create(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t gcpl_id, hid_t gapl_id, hid_t dxpl_id, void **req);
-H5_DLL void *H5VL_group_open(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t gapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_group_get(void *obj, const H5VL_class_t *cls, H5VL_group_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_group_specific(void *obj, const H5VL_class_t *cls, H5VL_group_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_group_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_group_close(void *grp, const H5VL_class_t *cls, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_group_create(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t gcpl_id, hid_t gapl_id, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_group_open(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t gapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_group_get(const H5VL_object_t *vol_obj, H5VL_group_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_group_specific(const H5VL_object_t *vol_obj, H5VL_group_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_group_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_group_close(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req);
 
 /* Link functions */
-H5_DLL herr_t H5VL_link_create(H5VL_link_create_type_t create_type, void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_link_copy(void *src_obj, H5VL_loc_params_t loc_params1, void *dst_obj, H5VL_loc_params_t loc_params2, const H5VL_class_t *cls, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_link_move(void *src_obj, H5VL_loc_params_t loc_params1, void *dst_obj, H5VL_loc_params_t loc_params2, const H5VL_class_t *cls, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_link_get(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5VL_link_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_link_specific(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5VL_link_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_link_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_link_create(H5VL_link_create_type_t create_type, const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_link_copy(const H5VL_object_t *src_vol_obj, const H5VL_loc_params_t *loc_params1, const H5VL_object_t *dst_vol_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_link_move(const H5VL_object_t *src_vol_obj, const H5VL_loc_params_t *loc_params1, const H5VL_object_t *dst_vol_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_link_get(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, H5VL_link_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_link_specific(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, H5VL_link_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_link_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
 
 /* Object functions */
-H5_DLL void *H5VL_object_open(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5I_type_t *opened_type, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_object_copy(void *src_obj, H5VL_loc_params_t loc_params1, const H5VL_class_t *cls1, const char *src_name, void *dst_obj, H5VL_loc_params_t loc_params2, const H5VL_class_t *cls2, const char *dst_name, hid_t ocpypl_id, hid_t lcpl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_object_get(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5VL_object_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_object_specific(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, H5VL_object_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_object_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
+H5_DLL void *H5VL_object_open(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *params, H5I_type_t *opened_type, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_object_copy(const H5VL_object_t *src_obj, const H5VL_loc_params_t *src_loc_params, const char *src_name, const H5VL_object_t *dst_obj, const H5VL_loc_params_t *dst_loc_params, const char *dst_name, hid_t ocpypl_id, hid_t lcpl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_object_get(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, H5VL_object_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_object_specific(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, H5VL_object_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_object_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
 
 /* Datatype functions */
-H5_DLL void *H5VL_datatype_commit(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t type_id, hid_t lcpl_id, hid_t tcpl_id, hid_t tapl_id, hid_t dxpl_id, void **req);
-H5_DLL void *H5VL_datatype_open(void *obj, H5VL_loc_params_t loc_params, const H5VL_class_t *cls, const char *name, hid_t tapl_id, hid_t dxpl_id, void **req);
-H5_DLL herr_t H5VL_datatype_get(void *dt, const H5VL_class_t *cls, H5VL_datatype_get_t get_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_datatype_specific(void *obj, const H5VL_class_t *cls, H5VL_datatype_specific_t specific_type, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_datatype_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id, void **req, ...);
-H5_DLL herr_t H5VL_datatype_close(void *dt, const H5VL_class_t *cls, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_datatype_commit(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t type_id, hid_t lcpl_id, hid_t tcpl_id, hid_t tapl_id, hid_t dxpl_id, void **req);
+H5_DLL void *H5VL_datatype_open(const H5VL_object_t *vol_obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t tapl_id, hid_t dxpl_id, void **req);
+H5_DLL herr_t H5VL_datatype_get(const H5VL_object_t *vol_obj, H5VL_datatype_get_t get_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_datatype_specific(const H5VL_object_t *vol_obj, H5VL_datatype_specific_t specific_type, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_datatype_optional(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req, ...);
+H5_DLL herr_t H5VL_datatype_close(const H5VL_object_t *vol_obj, hid_t dxpl_id, void **req);
 
 /* Asynchronous functions */
-H5_DLL herr_t H5VL_request_cancel(void **req, const H5VL_class_t *cls, H5ES_status_t *status);
-H5_DLL herr_t H5VL_request_test(void **req, const H5VL_class_t *cls, H5ES_status_t *status);
-H5_DLL herr_t H5VL_request_wait(void **req, const H5VL_class_t *cls, H5ES_status_t *status);
+H5_DLL herr_t H5VL_request_wait(const H5VL_object_t *vol_obj, uint64_t timeout, H5ES_status_t *status);
+H5_DLL herr_t H5VL_request_notify(const H5VL_object_t *vol_obj, H5VL_request_notify_t cb, void *ctx);
+H5_DLL herr_t H5VL_request_cancel(const H5VL_object_t *vol_obj);
+H5_DLL herr_t H5VL_request_specific(const H5VL_object_t *vol_obj, H5VL_request_specific_t specific_type, ...);
+H5_DLL herr_t H5VL_request_optional(const H5VL_object_t *vol_obj, ...);
+H5_DLL herr_t H5VL_request_free(const H5VL_object_t *vol_obj);
+
 #endif /* _H5VLprivate_H */