RNDSIZE
{VD_OP_GET_WCE, STRINGIZE(VD_OP_GET_WCE), RNDSIZE(int),
RNDSIZE(vd_geom_t),
{VD_OP_GET_VTOC, STRINGIZE(VD_OP_GET_VTOC), RNDSIZE(vd_vtoc_t),
{VD_OP_GET_EFI, STRINGIZE(VD_OP_GET_EFI), RNDSIZE(vd_efi_t),
{VD_OP_SET_WCE, STRINGIZE(VD_OP_SET_WCE), RNDSIZE(int),
RNDSIZE(vd_geom_t),
{VD_OP_SET_VTOC, STRINGIZE(VD_OP_SET_VTOC), RNDSIZE(vd_vtoc_t),
{VD_OP_SET_EFI, STRINGIZE(VD_OP_SET_EFI), RNDSIZE(vd_efi_t),
{VD_OP_SCSICMD, STRINGIZE(VD_OP_SCSICMD), RNDSIZE(vd_scsi_t),
if (nbytes != RNDSIZE(vd_capacity_t)) {
RNDSIZE(vd_capacity_t), nbytes);