int write_gpt_table(block_dev_desc_t *dev_desc,
gpt_header *gpt_h, gpt_entry *gpt_e)
{
const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries
* sizeof(gpt_entry)), dev_desc);
u32 calc_crc32;
u64 val;
debug("max lba: %x\n", (u32) dev_desc->lba);
/* Setup the Protective MBR */
if (set_protective_mbr(dev_desc) < 0)
goto err;
/* Generate CRC for the Primary GPT Header */
calc_crc32 = efi_crc32((const unsigned char *)gpt_e,
le32_to_cpu(gpt_h->num_partition_entries) *
le32_to_cpu(gpt_h->sizeof_partition_entry));
gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);
calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
le32_to_cpu(gpt_h->header_size));
gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
/* Write the First GPT to the block right after the Legacy MBR */
if (dev_desc->block_write(dev_desc->dev, 1, 1, gpt_h) != 1)
goto err;
if (dev_desc->block_write(dev_desc->dev, 2, pte_blk_cnt, gpt_e)
!= pte_blk_cnt)
goto err;
/* recalculate the values for the Backup GPT Header */
val = le64_to_cpu(gpt_h->my_lba);
gpt_h->my_lba = gpt_h->alternate_lba;
gpt_h->alternate_lba = cpu_to_le64(val);
gpt_h->header_crc32 = 0;
calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
le32_to_cpu(gpt_h->header_size));
gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
if (dev_desc->block_write(dev_desc->dev,
(lbaint_t)le64_to_cpu(gpt_h->last_usable_lba)
+ 1,
pte_blk_cnt, gpt_e) != pte_blk_cnt)
goto err;
if (dev_desc->block_write(dev_desc->dev,
(lbaint_t)le64_to_cpu(gpt_h->my_lba), 1,
gpt_h) != 1)
goto err;
debug("GPT successfully written to block device!\n");
return 0;
err:
printf("** Can't write to device %d **\n", dev_desc->dev);
return -1;
}
static int
check_label(int fd, dk_efi_t *dk_ioc)
{
efi_gpt_t *efi;
uint_t crc;
if (efi_ioctl(fd, DKIOCGETEFI, dk_ioc) == -1) {
switch (errno) {
case EIO:
return (VT_EIO);
default:
return (VT_ERROR);
}
}
efi = dk_ioc->dki_data;
if (efi->efi_gpt_Signature != LE_64(EFI_SIGNATURE)) {
if (efi_debug)
(void) fprintf(stderr,
"Bad EFI signature: 0x%llx != 0x%llx\n",
(long long)efi->efi_gpt_Signature,
(long long)LE_64(EFI_SIGNATURE));
return (VT_EINVAL);
}
/*
* check CRC of the header; the size of the header should
* never be larger than one block
*/
crc = efi->efi_gpt_HeaderCRC32;
efi->efi_gpt_HeaderCRC32 = 0;
len_t headerSize = (len_t)LE_32(efi->efi_gpt_HeaderSize);
if(headerSize < EFI_MIN_LABEL_SIZE || headerSize > EFI_LABEL_SIZE) {
if (efi_debug)
(void) fprintf(stderr,
"Invalid EFI HeaderSize %llu. Assuming %d.\n",
headerSize, EFI_MIN_LABEL_SIZE);
}
if ((headerSize > dk_ioc->dki_length) ||
crc != LE_32(efi_crc32((unsigned char *)efi, headerSize))) {
if (efi_debug)
(void) fprintf(stderr,
"Bad EFI CRC: 0x%x != 0x%x\n",
crc, LE_32(efi_crc32((unsigned char *)efi,
headerSize)));
return (VT_EINVAL);
}
return (0);
}
uint32_t compute_header_crc32(block *header_block) {
block header_copy;
memcpy(&header_copy, header_block, sizeof(block));
((struct gpt_header *) header_copy)->header_crc32 = 0x00000000;
struct gpt_header *header = (struct gpt_header *) header_block;
size_t size_to_checksum = header->header_size;
if(size_to_checksum > sizeof(block))
size_to_checksum = sizeof(block);
return efi_crc32((uint8_t *) &header_copy, size_to_checksum);
}
static void prepare_backup_gpt_header(gpt_header *gpt_h)
{
uint32_t calc_crc32;
uint64_t val;
/* recalculate the values for the Backup GPT Header */
val = le64_to_cpu(gpt_h->my_lba);
gpt_h->my_lba = gpt_h->alternate_lba;
gpt_h->alternate_lba = cpu_to_le64(val);
gpt_h->header_crc32 = 0;
calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
le32_to_cpu(gpt_h->header_size));
gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
}
static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e)
{
uint32_t calc_crc32;
/* Check the GUID Partition Table Entry Array CRC */
calc_crc32 = efi_crc32((const unsigned char *)gpt_e,
le32_to_cpu(gpt_h->num_partition_entries) *
le32_to_cpu(gpt_h->sizeof_partition_entry));
if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) {
printf("%s: 0x%x != 0x%x\n",
"GUID Partition Table Entry Array CRC is wrong",
le32_to_cpu(gpt_h->partition_entry_array_crc32),
calc_crc32);
return -1;
}
return 0;
}
/**
* is_gpt_valid() - tests one GPT header and PTEs for validity
* @state
* @lba is the logical block address of the GPT header to test
* @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.
*/
static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
gpt_header **gpt, gpt_entry **ptes)
{
u32 crc, origcrc;
u64 lastlba;
if (!ptes)
return 0;
if (!(*gpt = alloc_read_gpt_header(state, lba)))
return 0;
/* Check the GUID Partition Table signature */
if (le64_to_cpu((*gpt)->signature) != GPT_HEADER_SIGNATURE) {
pr_debug("GUID Partition Table Header signature is wrong:"
"%lld != %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->signature),
(unsigned long long)GPT_HEADER_SIGNATURE);
goto fail;
}
/* Check the GUID Partition Table header size is too big */
if (le32_to_cpu((*gpt)->header_size) >
bdev_logical_block_size(state->bdev)) {
pr_debug("GUID Partition Table Header size is too large: %u > %u\n",
le32_to_cpu((*gpt)->header_size),
bdev_logical_block_size(state->bdev));
goto fail;
}
/* Check the GUID Partition Table header size is too small */
if (le32_to_cpu((*gpt)->header_size) < sizeof(gpt_header)) {
pr_debug("GUID Partition Table Header size is too small: %u < %zu\n",
le32_to_cpu((*gpt)->header_size),
sizeof(gpt_header));
goto fail;
}
/* Check the GUID Partition Table CRC */
origcrc = le32_to_cpu((*gpt)->header_crc32);
(*gpt)->header_crc32 = 0;
crc = efi_crc32((const unsigned char *) (*gpt), le32_to_cpu((*gpt)->header_size));
if (crc != origcrc) {
pr_debug("GUID Partition Table Header CRC is wrong: %x != %x\n",
crc, origcrc);
goto fail;
}
(*gpt)->header_crc32 = cpu_to_le32(origcrc);
/* Check that the my_lba entry points to the LBA that contains
* the GUID Partition Table */
if (le64_to_cpu((*gpt)->my_lba) != lba) {
pr_debug("GPT my_lba incorrect: %lld != %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->my_lba),
(unsigned long long)lba);
goto fail;
}
/* Check the first_usable_lba and last_usable_lba are
* within the disk.
*/
lastlba = last_lba(state->bdev);
if (le64_to_cpu((*gpt)->first_usable_lba) > lastlba) {
pr_debug("GPT: first_usable_lba incorrect: %lld > %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->first_usable_lba),
(unsigned long long)lastlba);
goto fail;
}
if (le64_to_cpu((*gpt)->last_usable_lba) > lastlba) {
pr_debug("GPT: last_usable_lba incorrect: %lld > %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->last_usable_lba),
(unsigned long long)lastlba);
goto fail;
}
/* Check that sizeof_partition_entry has the correct value */
if (le32_to_cpu((*gpt)->sizeof_partition_entry) != sizeof(gpt_entry)) {
pr_debug("GUID Partitition Entry Size check failed.\n");
goto fail;
}
if (!(*ptes = alloc_read_gpt_entries(state, *gpt)))
goto fail;
/* Check the GUID Partition Entry Array CRC */
crc = efi_crc32((const unsigned char *) (*ptes),
le32_to_cpu((*gpt)->num_partition_entries) *
le32_to_cpu((*gpt)->sizeof_partition_entry));
if (crc != le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
pr_debug("GUID Partitition Entry Array CRC check failed.\n");
goto fail_ptes;
}
/* We're done, all's well */
return 1;
fail_ptes:
kfree(*ptes);
*ptes = NULL;
fail:
kfree(*gpt);
*gpt = NULL;
if (!force_gpt)
BUG_ON(1);
return 0;
}
/**
* is_gpt_valid() - tests one GPT header and PTEs for validity
*
* lba is the logical block address of the GPT header to test
* 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 PTEs.
*/
static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba,
gpt_header * pgpt_head, gpt_entry ** pgpt_pte)
{
unsigned char crc32_backup[4] = { 0 };
unsigned long calc_crc32;
unsigned long long lastlba;
if (!dev_desc || !pgpt_head) {
printf("%s: Invalid Argument(s)\n", __FUNCTION__);
return 0;
}
/* Read GPT Header from device */
if (dev_desc->block_read(dev_desc->dev, lba, 1, pgpt_head) != 1) {
printf("*** ERROR: Can't read GPT header ***\n");
return 0;
}
/* Check the GPT header signature */
if (le64_to_int(pgpt_head->signature) != GPT_HEADER_SIGNATURE) {
printf("GUID Partition Table Header signature is wrong:"
"0x%llX != 0x%llX\n",
(unsigned long long)le64_to_int(pgpt_head->signature),
(unsigned long long)GPT_HEADER_SIGNATURE);
return 0;
}
/* Check the GUID Partition Table CRC */
memcpy(crc32_backup, pgpt_head->header_crc32, sizeof(crc32_backup));
memset(pgpt_head->header_crc32, 0, sizeof(pgpt_head->header_crc32));
calc_crc32 = efi_crc32((const unsigned char *)pgpt_head,
le32_to_int(pgpt_head->header_size));
memcpy(pgpt_head->header_crc32, crc32_backup, sizeof(crc32_backup));
if (calc_crc32 != le32_to_int(crc32_backup)) {
printf("GUID Partition Table Header CRC is wrong:"
"0x%08lX != 0x%08lX\n",
le32_to_int(crc32_backup), calc_crc32);
return 0;
}
/* Check that the my_lba entry points to the LBA that contains the GPT */
if (le64_to_int(pgpt_head->my_lba) != lba) {
printf("GPT: my_lba incorrect: %llX != %llX\n",
(unsigned long long)le64_to_int(pgpt_head->my_lba),
(unsigned long long)lba);
return 0;
}
/* Check the first_usable_lba and last_usable_lba are within the disk. */
lastlba = (unsigned long long)dev_desc->lba;
if (le64_to_int(pgpt_head->first_usable_lba) > lastlba) {
printf("GPT: first_usable_lba incorrect: %llX > %llX\n",
le64_to_int(pgpt_head->first_usable_lba), lastlba);
return 0;
}
if (le64_to_int(pgpt_head->last_usable_lba) > lastlba) {
printf("GPT: last_usable_lba incorrect: %llX > %llX\n",
le64_to_int(pgpt_head->last_usable_lba), lastlba);
return 0;
}
debug("GPT: first_usable_lba: %llX last_usable_lba %llX last lba %llX\n",
le64_to_int(pgpt_head->first_usable_lba),
le64_to_int(pgpt_head->last_usable_lba), lastlba);
/* Read and allocate Partition Table Entries */
*pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head);
if (*pgpt_pte == NULL) {
printf("GPT: Failed to allocate memory for PTE\n");
return 0;
}
/* Check the GUID Partition Table Entry Array CRC */
calc_crc32 = efi_crc32((const unsigned char *)*pgpt_pte,
le32_to_int(pgpt_head->num_partition_entries) *
le32_to_int(pgpt_head->sizeof_partition_entry));
if (calc_crc32 != le32_to_int(pgpt_head->partition_entry_array_crc32)) {
printf("GUID Partition Table Entry Array CRC is wrong:"
"0x%08lX != 0x%08lX\n",
le32_to_int(pgpt_head->partition_entry_array_crc32),
calc_crc32);
if (*pgpt_pte != NULL) {
free(*pgpt_pte);
}
return 0;
}
/* We're done, all's well */
return 1;
}
/**
* is_gpt_valid() - tests one GPT header and PTEs for validity
* @bdev
* @lba is the logical block address of the GPT header to test
* @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.
*/
static int
is_gpt_valid(struct block_device *bdev, u64 lba,
gpt_header **gpt, gpt_entry **ptes)
{
u32 crc, origcrc;
u64 lastlba;
if (!bdev || !gpt || !ptes)
return 0;
if (!(*gpt = alloc_read_gpt_header(bdev, lba)))
return 0;
/* Check the GUID Partition Table signature */
if (le64_to_cpu((*gpt)->signature) != GPT_HEADER_SIGNATURE) {
Dprintk("GUID Partition Table Header signature is wrong:"
"%lld != %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->signature),
(unsigned long long)GPT_HEADER_SIGNATURE);
goto fail;
}
/* Check the GUID Partition Table CRC */
origcrc = le32_to_cpu((*gpt)->header_crc32);
(*gpt)->header_crc32 = 0;
crc = efi_crc32((const unsigned char *) (*gpt), le32_to_cpu((*gpt)->header_size));
if (crc != origcrc) {
Dprintk
("GUID Partition Table Header CRC is wrong: %x != %x\n",
crc, origcrc);
goto fail;
}
(*gpt)->header_crc32 = cpu_to_le32(origcrc);
/* Check that the my_lba entry points to the LBA that contains
* the GUID Partition Table */
if (le64_to_cpu((*gpt)->my_lba) != lba) {
Dprintk("GPT my_lba incorrect: %lld != %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->my_lba),
(unsigned long long)lba);
goto fail;
}
/* Check the first_usable_lba and last_usable_lba are
* within the disk.
*/
lastlba = last_lba(bdev);
if (le64_to_cpu((*gpt)->first_usable_lba) > lastlba) {
Dprintk("GPT: first_usable_lba incorrect: %lld > %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->first_usable_lba),
(unsigned long long)lastlba);
goto fail;
}
if (le64_to_cpu((*gpt)->last_usable_lba) > lastlba) {
Dprintk("GPT: last_usable_lba incorrect: %lld > %lld\n",
(unsigned long long)le64_to_cpu((*gpt)->last_usable_lba),
(unsigned long long)lastlba);
goto fail;
}
if (!(*ptes = alloc_read_gpt_entries(bdev, *gpt)))
goto fail;
/* Check the GUID Partition Entry Array CRC */
crc = efi_crc32((const unsigned char *) (*ptes),
le32_to_cpu((*gpt)->num_partition_entries) *
le32_to_cpu((*gpt)->sizeof_partition_entry));
if (crc != le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
Dprintk("GUID Partitition Entry Array CRC check failed.\n");
goto fail_ptes;
}
/* We're done, all's well */
return 1;
fail_ptes:
kfree(*ptes);
*ptes = NULL;
fail:
kfree(*gpt);
*gpt = NULL;
return 0;
}
/**
* is_gpt_valid() - tests one GPT header and PTEs for validity
* @fd is an open file descriptor to the whole disk
* @lba is the logical block address of the GPT header to test
* @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.
*/
static int
is_gpt_valid(int fd, uint64_t lba,
gpt_header ** gpt, gpt_entry ** ptes)
{
int rc = 0; /* default to not valid */
uint32_t crc, origcrc;
if (!gpt || !ptes)
return 0;
if (!(*gpt = alloc_read_gpt_header(fd, lba)))
return 0;
/* Check the GUID Partition Table signature */
if (__le64_to_cpu((*gpt)->signature) != GPT_HEADER_SIGNATURE) {
/*
printf("GUID Partition Table Header signature is wrong: %" PRIx64" != %" PRIx64 "\n",
__le64_to_cpu((*gpt)->signature), GUID_PT_HEADER_SIGNATURE);
*/
free(*gpt);
*gpt = NULL;
return rc;
}
/* Check the GUID Partition Table Header CRC */
origcrc = __le32_to_cpu((*gpt)->header_crc32);
(*gpt)->header_crc32 = 0;
crc = efi_crc32(*gpt, __le32_to_cpu((*gpt)->header_size));
if (crc != origcrc) {
// printf( "GPTH CRC check failed, %x != %x.\n", origcrc, crc);
(*gpt)->header_crc32 = __cpu_to_le32(origcrc);
free(*gpt);
*gpt = NULL;
return 0;
}
(*gpt)->header_crc32 = __cpu_to_le32(origcrc);
/* Check that the my_lba entry points to the LBA
* that contains the GPT we read */
if (__le64_to_cpu((*gpt)->my_lba) != lba) {
// printf( "my_lba % PRIx64 "x != lba %"PRIx64 "x.\n", __le64_to_cpu((*gpt)->my_lba), lba);
free(*gpt);
*gpt = NULL;
return 0;
}
if (!(*ptes = alloc_read_gpt_entries(fd, *gpt))) {
free(*gpt);
*gpt = NULL;
return 0;
}
/* Check the GUID Partition Entry Array CRC */
crc = efi_crc32(*ptes,
__le32_to_cpu((*gpt)->num_partition_entries) *
__le32_to_cpu((*gpt)->sizeof_partition_entry));
if (crc != __le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
// printf("GUID Partitition Entry Array CRC check failed.\n");
free(*gpt);
*gpt = NULL;
free(*ptes);
*ptes = NULL;
return 0;
}
/* We're done, all's well */
return 1;
}
static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba,
lbaint_t lastlba)
{
uint32_t crc32_backup = 0;
uint32_t calc_crc32;
/* Check the GPT header signature */
if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE) {
printf("%s signature is wrong: 0x%llX != 0x%llX\n",
"GUID Partition Table Header",
le64_to_cpu(gpt_h->signature),
GPT_HEADER_SIGNATURE);
return -1;
}
/* Check the GUID Partition Table CRC */
memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup));
memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32));
calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
le32_to_cpu(gpt_h->header_size));
memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup));
if (calc_crc32 != le32_to_cpu(crc32_backup)) {
printf("%s CRC is wrong: 0x%x != 0x%x\n",
"GUID Partition Table Header",
le32_to_cpu(crc32_backup), calc_crc32);
return -1;
}
/*
* Check that the my_lba entry points to the LBA that contains the GPT
*/
if (le64_to_cpu(gpt_h->my_lba) != lba) {
printf("GPT: my_lba incorrect: %llX != " LBAF "\n",
le64_to_cpu(gpt_h->my_lba),
lba);
return -1;
}
/*
* Check that the first_usable_lba and that the last_usable_lba are
* within the disk.
*/
if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) {
printf("GPT: first_usable_lba incorrect: %llX > " LBAF "\n",
le64_to_cpu(gpt_h->first_usable_lba), lastlba);
return -1;
}
if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) {
printf("GPT: last_usable_lba incorrect: %llX > " LBAF "\n",
le64_to_cpu(gpt_h->last_usable_lba), lastlba);
return -1;
}
debug("GPT: first_usable_lba: %llX last_usable_lba: %llX last lba: "
LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba),
le64_to_cpu(gpt_h->last_usable_lba), lastlba);
return 0;
}
/**
* is_gpt_valid() - tests one GPT header and PTEs for validity
* @bdev
* @lba is the logical block address of the GPT header to test
* @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.
*/
static int
is_gpt_valid(struct block_device *bdev, u64 lba,
gpt_header **gpt, gpt_entry **ptes)
{
u32 crc, origcrc;
if (!bdev || !gpt || !ptes)
return 0;
if (!(*gpt = alloc_read_gpt_header(bdev, lba)))
return 0;
/* Check the GUID Partition Table signature */
if (le64_to_cpu((*gpt)->signature) != GPT_HEADER_SIGNATURE) {
Dprintk("GUID Partition Table Header signature is wrong: %"
PRIx64 " != %" PRIx64 "\n", le64_to_cpu((*gpt)->signature),
GPT_HEADER_SIGNATURE);
kfree(*gpt);
*gpt = NULL;
return 0;
}
/* Check the GUID Partition Table CRC */
origcrc = le32_to_cpu((*gpt)->header_crc32);
(*gpt)->header_crc32 = 0;
crc = efi_crc32((const unsigned char *) (*gpt), le32_to_cpu((*gpt)->header_size));
if (crc != origcrc) {
Dprintk
("GUID Partition Table Header CRC is wrong: %x != %x\n",
crc, origcrc);
kfree(*gpt);
*gpt = NULL;
return 0;
}
(*gpt)->header_crc32 = cpu_to_le32(origcrc);
/* Check that the my_lba entry points to the LBA that contains
* the GUID Partition Table */
if (le64_to_cpu((*gpt)->my_lba) != lba) {
Dprintk("GPT my_lba incorrect: %" PRIx64 " != %" PRIx64 "\n",
le64_to_cpu((*gpt)->my_lba), lba);
kfree(*gpt);
*gpt = NULL;
return 0;
}
if (!(*ptes = alloc_read_gpt_entries(bdev, *gpt))) {
kfree(*gpt);
*gpt = NULL;
return 0;
}
/* Check the GUID Partition Entry Array CRC */
crc = efi_crc32((const unsigned char *) (*ptes),
le32_to_cpu((*gpt)->num_partition_entries) *
le32_to_cpu((*gpt)->sizeof_partition_entry));
if (crc != le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
Dprintk("GUID Partitition Entry Array CRC check failed.\n");
kfree(*gpt);
*gpt = NULL;
kfree(*ptes);
*ptes = NULL;
return 0;
}
/* We're done, all's well */
return 1;
}
uint32_t compute_entry_crc32(struct gpt_header *header, block *entry_blocks) {
return efi_crc32((uint8_t *) entry_blocks, total_entry_size(header));
}