uidtb_start
if (vflag && ((uidtb_start() < 0) || (gidtb_start() < 0)))
if ((uidtb == NULL) && (uidtb_start() < 0))
int uidtb_start(void);
if ((uidtb_start() < 0) || (gidtb_start() < 0))