Expand 'opt_query' VOL callback to return a bitfield instead of a flag (#136)

* Expand 'opt_query' VOL callback to return a bitfield instead of a flag

* Correct pastos

1 files changed, 5 insertions, 4 deletions

diff --git a/src/H5D.c b/src/H5D.c
index bd2fa47..3a4d463 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -1187,7 +1187,7 @@ herr_t
 H5Dvlen_get_buf_size(hid_t dataset_id, hid_t type_id, hid_t space_id, hsize_t *size /*out*/)
 {
     H5VL_object_t *vol_obj;   /* Dataset for this operation */
-    hbool_t        supported; /* Whether 'get vlen buf size' operation is supported by VOL connector */
+    uint64_t       supported; /* Whether 'get vlen buf size' operation is supported by VOL connector */
     herr_t         ret_value = SUCCEED; /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -1204,11 +1204,12 @@ H5Dvlen_get_buf_size(hid_t dataset_id, hid_t type_id, hid_t space_id, hsize_t *s
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid 'size' pointer")
 
     /* Check if the 'get_vlen_buf_size' callback is supported */
-    supported = FALSE;
+    supported = 0;
     if (H5VL_introspect_opt_query(vol_obj, H5VL_SUBCLS_DATASET, H5VL_NATIVE_DATASET_GET_VLEN_BUF_SIZE,
                                   &supported) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, H5I_INVALID_HID, "can't check for 'get vlen buf size' operation")
-    if (supported) {
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, H5I_INVALID_HID,
+                    "can't check for 'get vlen buf size' operation")
+    if (supported & H5VL_OPT_QUERY_SUPPORTED) {
         /* Make the 'get_vlen_buf_size' callback */
         if (H5VL_dataset_optional(vol_obj, H5VL_NATIVE_DATASET_GET_VLEN_BUF_SIZE, H5P_DATASET_XFER_DEFAULT,
                                   H5_REQUEST_NULL, type_id, space_id, size) < 0)