uuidgen
if (uuidgen(u, 1) == -1)
if (uuidgen(&id, 1) == -1) {
int uuidgen(struct uuid *, int);
gpt->uuidgen = 0;
u_int uuidgen;
x += gpt->uuidgen++;
int uuidgen(struct uuid *, int);
int uuidgen(struct uuid *, int);
if (uuidgen(store, count) != 0)
if (uuidgen(uuid++, 1) != 0)