fa9dc8d3ed
Refactor the currdev setting to find the device we booted from. Limit searching when we don't already have a reasonable currdev from that to the same device only. Search a little harder for ZFS volumes as that's needed for loader.efi to live on an ESP. Sponsored by: Netflix Differential Review: https://reviews.freebsd.org/D13784
128 lines
3.3 KiB
C
128 lines
3.3 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 (efi_zfs_is_preferred(pd->pd_handle))
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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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