vn_stat
if (vn_stat(nd.ni_vp, &sb) == 0
error = vn_stat(vp, st);
vn_stat(wp->f_vnode, &st);
error = vn_stat(vp, &sb);
error = vn_stat(vp, &sb);
error = vn_stat(vp, sb);
error = vn_stat(nd.ni_vp, sb);
error = vn_stat(vp, sb);
int vn_stat(struct vnode *, struct stat *);