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