H5VLquery_optional

fnherr_t H5VLquery_optional(hid_t obj_id, H5VL_SUBCLASS subcls, int opt_type, ulong * flags)

Queries whether an optional operation is supported.

Determines if a VOL connector supports a specific optional operation.

Parameters

obj_idObject identifier
subclsVOL subclass type
opt_typeOptional operation type to query
flagsPointer to receive operation flags

Returns

Non-negative on success, negative on failure.