emulate_update
rv = emulate_update(session_p, pPart, ulPartLen, OP_DIGEST);
rv = emulate_update(session_p, pPart,
CK_RV emulate_update(kernel_session_t *session_p, CK_BYTE_PTR pPart,
rv = emulate_update(session_p, pPart, ulPartLen, OP_SIGN);
rv = emulate_update(session_p, pPart, ulPartLen, OP_VERIFY);