olseek_args
{ compat(AS(olseek_args),lseek), .sy_auevent = AUE_LSEEK, .sy_flags = SYF_CAPENABLED, .sy_thrcnt = SY_THR_STATIC }, /* 19 = old lseek */
olseek(struct thread *td, struct olseek_args *uap)
int olseek(struct thread *, struct olseek_args *);