ufs_eventlookup
static int ufs_eventlookup(struct vnode *, char *, struct cred *,
error = ufs_eventlookup(vp, nm, cr, &rmvp);
terr = ufs_eventlookup(tdvp, tnm, cr, &tvp);
serr = ufs_eventlookup(sdvp, snm, cr, &svp);
error = ufs_eventlookup(vp, nm, cr, &rmvp);