vn_isunder
if (vn_isunder(mp->mnt_vnodecovered, cwdi->cwdi_rdir, l))
!vn_isunder(vp, p->p_cwdi->cwdi_rdir, l)) {
return vn_isunder(r1, r2, l2);
retval = vn_isunder(searchdir, ndp->ni_rootdir,
if (cwdi->cwdi_rdir && !vn_isunder(vp, NULL, l)) {
if (!vn_isunder(cwdi->cwdi_cdir, vp, l)) {
int vn_isunder(struct vnode *, struct vnode *, struct lwp *);