ommap_args
{ compat(AS(ommap_args),mmap), .sy_auevent = AUE_MMAP, .sy_flags = SYF_CAPENABLED, .sy_thrcnt = SY_THR_STATIC }, /* 71 = old mmap */
int ommap(struct thread *, struct ommap_args *);
ommap(struct thread *td, struct ommap_args *uap)