59a05bdf35
Get the information from the image that we're booting and store it in a global variable. Prefer using this to passing it around. Remove the special case for zfs that set the preferred boot handle by having it uses this global variable diretly. Reviewed by: kevans@ Differential Revision: https://reviews.freebsd.org/D20015
125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/*-
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* Copyright (c) 2008-2010 Rui Paulo
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* Copyright (c) 2006 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <stand.h>
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#ifdef EFI_ZFS_BOOT
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#include <libzfs.h>
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#endif
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#include <efi.h>
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#include <efilib.h>
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#include "efizfs.h"
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#ifdef EFI_ZFS_BOOT
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static zfsinfo_list_t zfsinfo;
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uint64_t pool_guid;
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zfsinfo_list_t *
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efizfs_get_zfsinfo_list(void)
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{
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return (&zfsinfo);
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}
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EFI_HANDLE
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efizfs_get_handle_by_guid(uint64_t guid)
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{
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zfsinfo_t *zi;
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STAILQ_FOREACH(zi, &zfsinfo, zi_link) {
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if (zi->zi_pool_guid == guid) {
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return (zi->zi_handle);
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}
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}
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return (NULL);
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}
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bool
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efizfs_get_guid_by_handle(EFI_HANDLE handle, uint64_t *guid)
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{
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zfsinfo_t *zi;
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if (guid == NULL)
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return (false);
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STAILQ_FOREACH(zi, &zfsinfo, zi_link) {
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if (zi->zi_handle == handle) {
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*guid = zi->zi_pool_guid;
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return (true);
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}
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}
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return (false);
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}
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static void
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insert_zfs(EFI_HANDLE handle, uint64_t guid)
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{
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zfsinfo_t *zi;
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zi = malloc(sizeof(zfsinfo_t));
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zi->zi_handle = handle;
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zi->zi_pool_guid = guid;
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STAILQ_INSERT_TAIL(&zfsinfo, zi, zi_link);
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}
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void
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efi_zfs_probe(void)
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{
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pdinfo_list_t *hdi;
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pdinfo_t *hd, *pd = NULL;
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char devname[SPECNAMELEN + 1];
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uint64_t guid;
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hdi = efiblk_get_pdinfo_list(&efipart_hddev);
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STAILQ_INIT(&zfsinfo);
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/*
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* Find the handle for the boot device. The boot1 did find the
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* device with loader binary, now we need to search for the
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* same device and if it is part of the zfs pool, we record the
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* pool GUID for currdev setup.
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*/
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STAILQ_FOREACH(hd, hdi, pd_link) {
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STAILQ_FOREACH(pd, &hd->pd_part, pd_link) {
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snprintf(devname, sizeof(devname), "%s%dp%d:",
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efipart_hddev.dv_name, hd->pd_unit, pd->pd_unit);
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if (zfs_probe_dev(devname, &guid) == 0) {
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insert_zfs(pd->pd_handle, guid);
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if (pd->pd_handle == boot_img->DeviceHandle)
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pool_guid = guid;
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}
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}
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}
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}
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#endif
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