lfind
int lfind();
forbid(lfind(2, cnt, opf, (line *)0) < 0);
forbid(lfind(3, cnt - 1, opf, (line *)0) < 0);
forbid(lfind(0, cnt, opf, (line *) 0) < 0);
forbid(lfind(1, cnt, opf, (line *) 0) < 0);
void *lfind(const void *, const void *, size_t *, size_t,
static lnode_t *lfind(struct vnode *, struct loinfo *);
lp = lfind(vp, li);
lp = lfind(vp, li);