Differential D11855 Diff 31556 head/sys/boot/efi/libefi/efizfs.c

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head/sys/boot/efi/libefi/efizfs.c

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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 <sys/disk.h>
				#include <stdint.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;

				zfsinfo_list_t *
				efizfs_get_zfsinfo_list(void)
				{
				return (&zfsinfo);
				}

				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;
				EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
				EFI_LOADED_IMAGE *img;
				char devname[SPECNAMELEN + 1];
				uint64_t guid;

				BS->HandleProtocol(IH, &imgid, (VOID**)&img);
				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 == img->DeviceHandle)
				pool_guid = guid;
				}

				}
				}
				}

				uint64_t
				ldi_get_size(void *priv)
				{
				int fd = (uintptr_t) priv;
				uint64_t size;

				ioctl(fd, DIOCGMEDIASIZE, &size);
				return (size);
				}
				#endif