CASE_DATA
fmd_buf_write(hdl, zcp->zc_case, CASE_DATA, &zcp->zc_data,
fmd_buf_read(hdl, cp, CASE_DATA, &zcp->zc_data,
fmd_buf_create(hdl, cs, CASE_DATA,
fmd_buf_write(hdl, cs, CASE_DATA, &data, sizeof (data));