1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright (c) 2023 by iXsystems, Inc.
25 */
26
27 #include <sys/zfs_context.h>
28 #include <sys/spa.h>
29 #include <sys/spa_impl.h>
30 #include <sys/vdev.h>
31 #include <sys/vdev_impl.h>
32
33 /*
34 * Check if the reserved boot area is in-use. This is called from
35 * spa_vdev_attach() when adding a device to a raidz vdev, to ensure that the
36 * reserved area is available as scratch space for raidz expansion.
37 *
38 * This function currently always returns 0. On Linux, there are no known
39 * external uses of the reserved area. On FreeBSD, the reserved boot area is
40 * used when booting to a ZFS root from an MBR partition.
41 *
42 * Currently nothing using libzpool can add a disk to a pool, so this does
43 * nothing.
44 */
45 int
vdev_check_boot_reserve(spa_t * spa,vdev_t * childvd)46 vdev_check_boot_reserve(spa_t *spa, vdev_t *childvd)
47 {
48 (void) spa;
49 (void) childvd;
50
51 return (0);
52 }
53