alignpartition
if (alignpartition(lp, partno, offsetalign, 1, ROUND_OFFSET_UP) == 1) {
if (alignpartition(lp, partno, 1, sizealign, ROUND_SIZE_UP) == 1) {
if (alignpartition(lp, partno, offsetalign, sizealign, ROUND_OFFSET_UP |
int alignpartition(struct disklabel *, int, u_int64_t, u_int64_t, int);