SHFL_REQUEST
err = vbg_hgcm_connect(gdev, SHFL_REQUEST, &loc,
vbg_hgcm_disconnect(gdev, SHFL_REQUEST, vboxsf_client_id, &vbox_status);
err = vbg_hgcm_call(gdev, SHFL_REQUEST, vboxsf_client_id, function,