rem: cookie->s = &vnode->stream;
add: cookie->stream = &vnode->stream;
context: devfs_open_dir(fs_cookie _fs, fs_vnode _v, file_cookie *_cookie){	struct devfs *fs = _fs;	struct devfs_vnode *vnode = _v;	struct devfs_cookie *cookie;	TRACE(("devfs_open: vnode 0x%x, oflags 0x%x\n", vnode, oflags));	if (vnode->stream.type != STREAM_TYPE_DIR)		return EINVAL;	cookie = kmalloc(sizeof(struct devfs_cookie));	if (cookie == NULL)		return ENOMEM;	mutex_lock(&fs->lock);	cookie->s = &vnode->stream;	cookie->u.dir.ptr = vnode->stream.u.dir.dir_head;	*_cookie = cookie;	mutex_unlock(&fs->lock);	return B_OK;}