Пример #1
0
Файл: efi.c Проект: 274914765/C
/**
 * efi_partition(struct parsed_partitions *state, struct block_device *bdev)
 * @state
 * @bdev
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int
efi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
    gpt_header *gpt = NULL;
    gpt_entry *ptes = NULL;
    u32 i;

    if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
        kfree(gpt);
        kfree(ptes);
        return 0;
    }

    Dprintk("GUID Partition Table is valid!  Yea!\n");

    for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
        if (!is_pte_valid(&ptes[i], last_lba(bdev)))
            continue;

        put_partition(state, i+1, le64_to_cpu(ptes[i].starting_lba),
                 (le64_to_cpu(ptes[i].ending_lba) -
                                  le64_to_cpu(ptes[i].starting_lba) +
                  1ULL));

        /* If this is a RAID volume, tell md */
        if (!efi_guidcmp(ptes[i].partition_type_guid,
                 PARTITION_LINUX_RAID_GUID))
            state->parts[i+1].flags = 1;
    }
    kfree(ptes);
    kfree(gpt);
    printk("\n");
    return 1;
}
Пример #2
0
/**
 * efi_partition(struct parsed_partitions *state)
 * @state
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int efi_partition(struct parsed_partitions *state)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(state->bdev) / 512;

	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
			continue;

		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i + 1].flags = ADDPART_FLAG_RAID;
	}
	kfree(ptes);
	kfree(gpt);
	printk("\n");
	return 1;
}
Пример #3
0
/**
 * read_gpt_pt() 
 * @fd
 * @all - slice with start/size of whole disk
 *
 *  0 if this isn't our partition table
 *  number of partitions if successful
 *
 */
int
read_gpt_pt (int fd, struct slice all, struct slice *sp, int ns)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	uint32_t i;
	int n = 0;
        int last_used_index=-1;

	if (!find_valid_gpt (fd, &gpt, &ptes) || !gpt || !ptes) {
		if (gpt)
			free (gpt);
		if (ptes)
			free (ptes);
		return 0;
	}

	for (i = 0; i < __le32_to_cpu(gpt->num_partition_entries) && i < ns; i++) {
		if (!efi_guidcmp (NULL_GUID, ptes[i].partition_type_guid)) {
			sp[n].start = 0;
			sp[n].size = 0;
			n++;
		} else {
			sp[n].start = __le64_to_cpu(ptes[i].starting_lba);
			sp[n].size  = __le64_to_cpu(ptes[i].ending_lba) -
				__le64_to_cpu(ptes[i].starting_lba) + 1;
                        last_used_index=n;
			n++;
		}
	}
	free (ptes);
	free (gpt);
	return last_used_index+1;
}
Пример #4
0
/**
 * efi_partition(struct parsed_partitions *state)
 * @state
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int efi_partition(struct parsed_partitions *state)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
	u8 unparsed_guid[37];

	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		struct partition_meta_info *info;
		unsigned label_count = 0;
		unsigned label_max;
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
			continue;

		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i + 1].flags = ADDPART_FLAG_RAID;

		info = &state->parts[i + 1].info;
		/* Instead of doing a manual swap to big endian, reuse the
		 * common ASCII hex format as the interim.
		 */
		efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
		part_pack_uuid(unparsed_guid, info->uuid);

		/* Naively convert UTF16-LE to 7 bits. */
		label_max = min(sizeof(info->volname) - 1,
				sizeof(ptes[i].partition_name));
		info->volname[label_max] = 0;
		while (label_count < label_max) {
			u8 c = ptes[i].partition_name[label_count] & 0xff;
			if (c && !isprint(c))
				c = '!';
			info->volname[label_count] = c;
			label_count++;
		}
		state->parts[i + 1].has_info = true;
	}
	kfree(ptes);
	kfree(gpt);
	strlcat(state->pp_buf, "\n", PAGE_SIZE);
	return 1;
}
Пример #5
0
/**
 * efi_partition(struct parsed_partitions *state)
 * @state
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int efi_partition(struct parsed_partitions *state)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(state->bdev) / 512;

	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;
		u8 name[sizeof(ptes->partition_name) / sizeof(efi_char16_t)];
		int len;

		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
			continue;

		len = utf16s_to_utf8s(ptes[i].partition_name,
				      sizeof(ptes[i].partition_name) /
				      sizeof(efi_char16_t),
				      UTF16_LITTLE_ENDIAN, name,
				      sizeof(name));

		put_named_partition(state, i+1, start * ssz, size * ssz,
				    name, len);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i + 1].flags = ADDPART_FLAG_RAID;
	}
	kfree(ptes);
	kfree(gpt);
	strlcat(state->pp_buf, "\n", PAGE_SIZE);
	return 1;
}
Пример #6
0
/**
 * efi_partition(struct parsed_partitions *state, struct block_device *bdev)
 * @state
 * @bdev
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int
efi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_hardsect_size(bdev) / 512;

	if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	Dprintk("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		if (!is_pte_valid(&ptes[i], last_lba(bdev)))
			continue;

		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i+1].flags = 1;

		/* If this is a EFI System partition, tell hotplug */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_SYSTEM_GUID))
			state->parts[i+1].is_efi_system_partition = 1;
	}
	kfree(ptes);
	kfree(gpt);
	printk("\n");
	return 1;
}
Пример #7
0
gpt_disk_get_partition_info(int fd, uint32_t num, uint64_t * start,
			    uint64_t * size, uint8_t *signature,
			    uint8_t * mbr_type, uint8_t * signature_type,
			    int ignore_pmbr_error)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL, *p;
	int rc = 0;

	char *report=getenv("LIBEFIBOOT_REPORT_GPT_ERRORS");
	if (report)
		report_errors = 1;

	rc = find_valid_gpt(fd, &gpt, &ptes, ignore_pmbr_error);
	if (rc < 0)
		return rc;

	*mbr_type = 0x02;
	*signature_type = 0x02;

	if (num > 0 && num <= __le32_to_cpu(gpt->num_partition_entries)) {
		p = &ptes[num - 1];
		*start = __le64_to_cpu(p->starting_lba);
		*size = __le64_to_cpu(p->ending_lba) -
			__le64_to_cpu(p->starting_lba) + 1;
		memcpy(signature, &p->unique_partition_guid,
		       sizeof (p->unique_partition_guid));
	} else {
		if (report_errors)
			fprintf(stderr, "partition %d is not valid\n", num);
		errno = EINVAL;
		return -1;
	}
	if (ptes)
		free(ptes);
	if (gpt)
		free(gpt);

	return rc;
}
Пример #8
0
/**
 * find_valid_gpt() - Search disk for valid GPT headers and PTEs
 * @state
 * @gpt is a GPT header ptr, filled on return.
 * @ptes is a PTEs ptr, filled on return.
 * Description: Returns 1 if valid, 0 on error.
 * If valid, returns pointers to newly allocated GPT header and PTEs.
 * Validity depends on PMBR being valid (or being overridden by the
 * 'gpt' kernel command line option) and finding either the Primary
 * GPT header and PTEs valid, or the Alternate GPT header and PTEs
 * valid.  If the Primary GPT header is not valid, the Alternate GPT header
 * is not checked unless the 'gpt' kernel command line option is passed.
 * This protects against devices which misreport their size, and forces
 * the user to decide to use the Alternate GPT.
 */
static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
			  gpt_entry **ptes)
{
	int good_pgpt = 0, good_agpt = 0, good_pmbr = 0;
	gpt_header *pgpt = NULL, *agpt = NULL;
	gpt_entry *pptes = NULL, *aptes = NULL;
	legacy_mbr *legacymbr;
	u64 lastlba;

	if (!ptes)
		return 0;

	lastlba = last_lba(state->bdev);

#if 0 // merged from msm8960-gb by ZTE_BOOT_JIA_20120105 jia.jia
        if (!force_gpt) {
#else
        if (force_gpt) {
#endif
                /* This will be added to the EFI Spec. per Intel after v1.02. */
                legacymbr = kzalloc(sizeof (*legacymbr), GFP_KERNEL);
                if (legacymbr) {
                        read_lba(state, 0, (u8 *) legacymbr,
				 sizeof (*legacymbr));
                        good_pmbr = is_pmbr_valid(legacymbr);
                        kfree(legacymbr);
                }
                if (!good_pmbr)
                        goto fail;
        }

	good_pgpt = is_gpt_valid(state, GPT_PRIMARY_PARTITION_TABLE_LBA,
				 &pgpt, &pptes);
        if (good_pgpt)
		good_agpt = is_gpt_valid(state,
					 le64_to_cpu(pgpt->alternate_lba),
					 &agpt, &aptes);
        if (!good_agpt && force_gpt)
                good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);

        /* The obviously unsuccessful case */
        if (!good_pgpt && !good_agpt)
                goto fail;

        compare_gpts(pgpt, agpt, lastlba);

        /* The good cases */
        if (good_pgpt) {
                *gpt  = pgpt;
                *ptes = pptes;
                kfree(agpt);
                kfree(aptes);
                if (!good_agpt) {
                        printk(KERN_WARNING 
			       "Alternate GPT is invalid, "
                               "using primary GPT.\n");
                }
                return 1;
        }
        else if (good_agpt) {
                *gpt  = agpt;
                *ptes = aptes;
                kfree(pgpt);
                kfree(pptes);
                printk(KERN_WARNING 
                       "Primary GPT is invalid, using alternate GPT.\n");
                return 1;
        }

 fail:
        kfree(pgpt);
        kfree(agpt);
        kfree(pptes);
        kfree(aptes);
        *gpt = NULL;
        *ptes = NULL;
        return 0;
}

/**
 * efi_partition(struct parsed_partitions *state)
 * @state
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int efi_partition(struct parsed_partitions *state)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
	u8 unparsed_guid[37];

	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		struct partition_meta_info *info;
		unsigned label_count = 0;
		unsigned label_max;
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
			continue;

		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i + 1].flags = ADDPART_FLAG_RAID;

		info = &state->parts[i + 1].info;
		/* Instead of doing a manual swap to big endian, reuse the
		 * common ASCII hex format as the interim.
		 */
		efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
		part_pack_uuid(unparsed_guid, info->uuid);

		/* Naively convert UTF16-LE to 7 bits. */
		label_max = min(sizeof(info->volname) - 1,
				sizeof(ptes[i].partition_name));
		info->volname[label_max] = 0;
		while (label_count < label_max) {
			u8 c = ptes[i].partition_name[label_count] & 0xff;
			if (c && !isprint(c))
				c = '!';
			info->volname[label_count] = c;
			label_count++;
		}
		state->parts[i + 1].has_info = true;
	}
	kfree(ptes);
	kfree(gpt);
	strlcat(state->pp_buf, "\n", PAGE_SIZE);
	return 1;
}
Пример #9
0
/**
 * efi_partition(struct parsed_partitions *state)
 * @state
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int efi_partition(struct parsed_partitions *state)
{
	char* partition_name = NULL;
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(state->bdev) / 512;

	partition_name = kzalloc(sizeof(ptes->partition_name), GFP_KERNEL);

	if (!partition_name)
		return 0;

	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		kfree(partition_name);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	proc_create("emmc", 0666, NULL, &emmc_partition_fops);
	gpt_info.num_of_partitions = le32_to_cpu(gpt->num_partition_entries);
	gpt_info.erase_size = bdev_erase_size(state->bdev) * ssz;

	/*
	* Not certain if there is a chance this function is called again with
	* a different GPT. In case there is, free previously allocated memory
	*/
	kfree(gpt_info.partitions);

	gpt_info.partitions = kzalloc(gpt_info.num_of_partitions
			* sizeof(*gpt_info.partitions), GFP_KERNEL);

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		int partition_name_len;
		struct partition_meta_info *info;
		unsigned label_count = 0;
		unsigned label_max;
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		gpt_info.partitions[i].size = size * ssz;

		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
			continue;

		partition_name_len = utf16s_to_utf8s(ptes[i].partition_name,
						     sizeof(ptes[i].partition_name),
						     UTF16_LITTLE_ENDIAN,
						     partition_name,
                             sizeof(ptes[i].partition_name));

#ifdef CONFIG_APANIC_ON_MMC
		if(strncmp(partition_name,CONFIG_APANIC_PLABEL,partition_name_len) == 0) {
			apanic_partition_start = start * ssz;
			apanic_partition_size = size * ssz;
			pr_debug("apanic partition found starts at %lu \r\n",
				apanic_partition_start);
			pr_debug("apanic partition size = %lu\n",
				apanic_partition_size);
		}
#endif
		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i + 1].flags = ADDPART_FLAG_RAID;

		info = &state->parts[i + 1].info;
		efi_guid_unparse(&ptes[i].unique_partition_guid, info->uuid);

		/* Naively convert UTF16-LE to 7 bits. */
		label_max = min(sizeof(info->volname) - 1,
				sizeof(ptes[i].partition_name));
		info->volname[label_max] = 0;
		while (label_count < label_max) {
			u8 c = ptes[i].partition_name[label_count] & 0xff;
			if (c && !isprint(c))
				c = '!';
			info->volname[label_count] = c;
			if (label_count <= partition_name_len)
				gpt_info.partitions[i].volname[label_count] = c;
			label_count++;
		}
		state->parts[i + 1].has_info = true;

#ifdef CONFIG_APANIC_ON_MMC
		if(strncmp(info->volname,CONFIG_APANIC_PLABEL,label_count) == 0) {
			apanic_partition_start = start * ssz;
			pr_debug("apanic partition found starts at %lu \r\n", apanic_partition_start);
		}
#endif
	}
	kfree(ptes);
	kfree(gpt);
	kfree(partition_name);
	strlcat(state->pp_buf, "\n", PAGE_SIZE);
	return 1;
}
Пример #10
0
/**
 * efi_partition(struct parsed_partitions *state, struct block_device *bdev)
 * @state
 * @bdev
 *
 * Description: called from check.c, if the disk contains GPT
 * partitions, sets up partition entries in the kernel.
 *
 * If the first block on the disk is a legacy MBR,
 * it will get handled by msdos_partition().
 * If it's a Protective MBR, we'll handle it here.
 *
 * We do not create a Linux partition for GPT, but
 * only for the actual data partitions.
 * Returns:
 * -1 if unable to read the partition table
 *  0 if this isn't our partition table
 *  1 if successful
 *
 */
int
efi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
	gpt_header *gpt = NULL;
	gpt_entry *ptes = NULL;
	u32 i;
	unsigned ssz = bdev_logical_block_size(bdev) / 512;
	u8 unparsed_guid[37];

	if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
		kfree(gpt);
		kfree(ptes);
		return 0;
	}

	pr_debug("GUID Partition Table is valid!  Yea!\n");

	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
		struct partition_meta_info *info;
		unsigned label_count = 0;
		unsigned label_max;
		u64 start = le64_to_cpu(ptes[i].starting_lba);
		u64 size = le64_to_cpu(ptes[i].ending_lba) -
			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;

		if (!is_pte_valid(&ptes[i], last_lba(bdev)))
			continue;

		put_partition(state, i+1, start * ssz, size * ssz);

		/* If this is a RAID volume, tell md */
		if (!efi_guidcmp(ptes[i].partition_type_guid,
				 PARTITION_LINUX_RAID_GUID))
			state->parts[i+1].flags = 1;

		info = &state->parts[i + 1].info;
		/* The EFI specification diverges from RFC 4122 with respect to
		 * the packed storage of its UUIDs.  efi_guid_unparse unpacks to
		 * a common ASCII representation, which allows part_pack_uuid to
		 * pack it in the standard big endian layout for use by the rest
		 * of the kernel.
		 */
		efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
		part_pack_uuid(unparsed_guid, info->uuid);

		/* Naively convert UTF16-LE to 7 bits. */
		label_max = min(sizeof(info->volname) - 1,
				sizeof(ptes[i].partition_name));
		info->volname[label_max] = 0;
		while (label_count < label_max) {
			u8 c = ptes[i].partition_name[label_count] & 0xff;
			if (c && !isprint(c))
				c = '!';
			info->volname[label_count] = c;
			label_count++;
		}
		state->parts[i + 1].has_info = true;
	}
	kfree(ptes);
	kfree(gpt);
	printk("\n");
	return 1;
}