vn_fullpath_global
error = vn_fullpath_global(vp, &dlep, &flep);
error = vn_fullpath_global(vp, &dlep, &flep);
if (vn_fullpath_global(p->p_textvp, &fullpath, &freepath) != 0)
error = vn_fullpath_global(vp, &rpath, &fbuf);
error = vn_fullpath_global(vp, &rbuf, &fbuf);
int vn_fullpath_global(struct vnode *vp, char **retbuf, char **freebuf);