lib/libzpool/vdev_label_os.c

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