From: Chang Hyun Park chchch.park@samsung.com
Custom definitions of le_XX_to_int functions have been replaced with standard ones, defined at <compiler.h>
Replacement of several GPT related structures members with ones indicating its endianness and proper size.
Signed-off-by: Chang Hyun Park chchch.park@samsung.com Signed-off-by: Lukasz Majewski l.majewski@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com
--- Changes for v2: - Combining two commits regarding part_efi.{h|c}
Changes for v3: - None --- disk/part_efi.c | 109 +++++++++++++++++++--------------------------------- include/part_efi.h | 85 +++++++++++++++++++++------------------- 2 files changed, 84 insertions(+), 110 deletions(-)
diff --git a/disk/part_efi.c b/disk/part_efi.c index b2233da..d4c61d2 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -44,34 +44,6 @@ defined(CONFIG_MMC) || \ defined(CONFIG_SYSTEMACE)
-/* Convert char[2] in little endian format to the host format integer - */ -static inline unsigned short le16_to_int(unsigned char *le16) -{ - return ((le16[1] << 8) + le16[0]); -} - -/* Convert char[4] in little endian format to the host format integer - */ -static inline unsigned long le32_to_int(unsigned char *le32) -{ - return ((le32[3] << 24) + (le32[2] << 16) + (le32[1] << 8) + le32[0]); -} - -/* Convert char[8] in little endian format to the host format integer - */ -static inline unsigned long long le64_to_int(unsigned char *le64) -{ - return (((unsigned long long)le64[7] << 56) + - ((unsigned long long)le64[6] << 48) + - ((unsigned long long)le64[5] << 40) + - ((unsigned long long)le64[4] << 32) + - ((unsigned long long)le64[3] << 24) + - ((unsigned long long)le64[2] << 16) + - ((unsigned long long)le64[1] << 8) + - (unsigned long long)le64[0]); -} - /** * efi_crc32() - EFI version of crc32 function * @buf: buffer to calculate crc32 of @@ -79,7 +51,7 @@ static inline unsigned long long le64_to_int(unsigned char *le64) * * Description: Returns EFI-style CRC32 value for @buf */ -static inline unsigned long efi_crc32(const void *buf, unsigned long len) +static inline u32 efi_crc32(const void *buf, u32 len) { return crc32(0, buf, len); } @@ -137,13 +109,13 @@ void print_part_efi(block_dev_desc_t * dev_desc) debug("%s: gpt-entry at %p\n", __func__, gpt_pte);
printf("Part\tName\t\t\tStart LBA\tEnd LBA\n"); - for (i = 0; i < le32_to_int(gpt_head->num_partition_entries); i++) { + for (i = 0; i < le32_to_cpu(gpt_head->num_partition_entries); i++) {
if (is_pte_valid(&gpt_pte[i])) { printf("%3d\t%-18s\t0x%08llX\t0x%08llX\n", (i + 1), print_efiname(&gpt_pte[i]), - le64_to_int(gpt_pte[i].starting_lba), - le64_to_int(gpt_pte[i].ending_lba)); + (u64) le64_to_cpu(gpt_pte[i].starting_lba), + (u64) le64_to_cpu(gpt_pte[i].ending_lba)); } else { break; /* Stop at the first non valid PTE */ } @@ -174,9 +146,9 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part, }
/* The ulong casting limits the maximum disk size to 2 TB */ - info->start = (ulong) le64_to_int(gpt_pte[part - 1].starting_lba); + info->start = (u64) le64_to_cpu(gpt_pte[part - 1].starting_lba); /* The ending LBA is inclusive, to calculate size, add 1 to it */ - info->size = ((ulong)le64_to_int(gpt_pte[part - 1].ending_lba) + 1) + info->size = ((u64)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1) - info->start; info->blksz = GPT_BLOCK_SIZE;
@@ -215,7 +187,7 @@ int test_part_efi(block_dev_desc_t * dev_desc) static int pmbr_part_valid(struct partition *part) { if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && - le32_to_int(part->start_sect) == 1UL) { + le32_to_cpu(part->start_sect) == 1UL) { return 1; }
@@ -234,9 +206,8 @@ static int is_pmbr_valid(legacy_mbr * mbr) { int i = 0;
- if (!mbr || le16_to_int(mbr->signature) != MSDOS_MBR_SIGNATURE) { + if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) return 0; - }
for (i = 0; i < 4; i++) { if (pmbr_part_valid(&mbr->partition_record[i])) { @@ -259,8 +230,8 @@ static int is_pmbr_valid(legacy_mbr * mbr) 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; + u32 crc32_backup = 0; + u32 calc_crc32; unsigned long long lastlba;
if (!dev_desc || !pgpt_head) { @@ -275,54 +246,54 @@ static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba, }
/* Check the GPT header signature */ - if (le64_to_int(pgpt_head->signature) != GPT_HEADER_SIGNATURE) { + if (le64_to_cpu(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); + (u64) le64_to_cpu(pgpt_head->signature), + (u64) 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)); + 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)); + le32_to_cpu(pgpt_head->header_size));
- memcpy(pgpt_head->header_crc32, crc32_backup, sizeof(crc32_backup)); + memcpy(&pgpt_head->header_crc32, &crc32_backup, sizeof(crc32_backup));
- if (calc_crc32 != le32_to_int(crc32_backup)) { + if (calc_crc32 != le32_to_cpu(crc32_backup)) { printf("GUID Partition Table Header CRC is wrong:" - "0x%08lX != 0x%08lX\n", - le32_to_int(crc32_backup), calc_crc32); + "0x%x != 0x%x\n", + (u32) le32_to_cpu(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) { + if (le64_to_cpu(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); + (u64)le64_to_cpu(pgpt_head->my_lba), + (u64)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) { + if (le64_to_cpu(pgpt_head->first_usable_lba) > lastlba) { printf("GPT: first_usable_lba incorrect: %llX > %llX\n", - le64_to_int(pgpt_head->first_usable_lba), lastlba); + (u64) le64_to_cpu(pgpt_head->first_usable_lba), lastlba); return 0; } - if (le64_to_int(pgpt_head->last_usable_lba) > lastlba) { + if (le64_to_cpu(pgpt_head->last_usable_lba) > lastlba) { printf("GPT: last_usable_lba incorrect: %llX > %llX\n", - le64_to_int(pgpt_head->last_usable_lba), lastlba); + (u64) le64_to_cpu(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); + (u64) le64_to_cpu(pgpt_head->first_usable_lba), + (u64) le64_to_cpu(pgpt_head->last_usable_lba), lastlba);
/* Read and allocate Partition Table Entries */ *pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head); @@ -333,13 +304,13 @@ static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba,
/* 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)); + le32_to_cpu(pgpt_head->num_partition_entries) * + le32_to_cpu(pgpt_head->sizeof_partition_entry));
- if (calc_crc32 != le32_to_int(pgpt_head->partition_entry_array_crc32)) { + if (calc_crc32 != le32_to_cpu(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), + "0x%x != 0x%x\n", + (u32)le32_to_cpu(pgpt_head->partition_entry_array_crc32), calc_crc32);
free(*pgpt_pte); @@ -370,12 +341,12 @@ static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc, return NULL; }
- count = le32_to_int(pgpt_head->num_partition_entries) * - le32_to_int(pgpt_head->sizeof_partition_entry); + count = le32_to_cpu(pgpt_head->num_partition_entries) * + le32_to_cpu(pgpt_head->sizeof_partition_entry);
- debug("%s: count = %lu * %lu = %u\n", __func__, - le32_to_int(pgpt_head->num_partition_entries), - le32_to_int(pgpt_head->sizeof_partition_entry), count); + debug("%s: count = %u * %u = %u\n", __func__, + (u32) le32_to_cpu(pgpt_head->num_partition_entries), + (u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), count);
/* Allocate memory for PTE, remember to FREE */ if (count != 0) { @@ -390,7 +361,7 @@ static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
/* Read GPT Entries from device */ if (dev_desc->block_read (dev_desc->dev, - (unsigned long)le64_to_int(pgpt_head->partition_entry_lba), + (u64) le64_to_cpu(pgpt_head->partition_entry_lba), (lbaint_t) (count / GPT_BLOCK_SIZE), pte) != (count / GPT_BLOCK_SIZE)) {
diff --git a/include/part_efi.h b/include/part_efi.h index a9d4399..11d995c 100644 --- a/include/part_efi.h +++ b/include/part_efi.h @@ -29,6 +29,8 @@ * http://developer.intel.com/technology/efi/efi.htm */
+#include <linux/compiler.h> + #ifndef _DISK_PART_EFI_H #define _DISK_PART_EFI_H
@@ -41,6 +43,8 @@ #define GPT_HEADER_REVISION_V1 0x00010000 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL #define GPT_ENTRY_NAME "gpt" +#define GPT_ENTRY_NUMBERS 128 +#define GPT_ENTRY_SIZE 128
#define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ((efi_guid_t) \ @@ -73,68 +77,67 @@ 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
/* linux/include/efi.h */ -typedef unsigned short efi_char16_t; +typedef u16 efi_char16_t;
typedef struct { - unsigned char b[16]; + u8 b[16]; } efi_guid_t;
/* based on linux/include/genhd.h */ struct partition { - unsigned char boot_ind; /* 0x80 - active */ - unsigned char head; /* starting head */ - unsigned char sector; /* starting sector */ - unsigned char cyl; /* starting cylinder */ - unsigned char sys_ind; /* What partition type */ - unsigned char end_head; /* end head */ - unsigned char end_sector; /* end sector */ - unsigned char end_cyl; /* end cylinder */ - unsigned char start_sect[4]; /* starting sector counting from 0 */ - unsigned char nr_sects[4]; /* nr of sectors in partition */ -} __attribute__ ((packed)); + u8 boot_ind; /* 0x80 - active */ + u8 head; /* starting head */ + u8 sector; /* starting sector */ + u8 cyl; /* starting cylinder */ + u8 sys_ind; /* What partition type */ + u8 end_head; /* end head */ + u8 end_sector; /* end sector */ + u8 end_cyl; /* end cylinder */ + __le32 start_sect; /* starting sector counting from 0 */ + __le32 nr_sects; /* nr of sectors in partition */ +} __packed;
/* based on linux/fs/partitions/efi.h */ typedef struct _gpt_header { - unsigned char signature[8]; - unsigned char revision[4]; - unsigned char header_size[4]; - unsigned char header_crc32[4]; - unsigned char reserved1[4]; - unsigned char my_lba[8]; - unsigned char alternate_lba[8]; - unsigned char first_usable_lba[8]; - unsigned char last_usable_lba[8]; + __le64 signature; + __le32 revision; + __le32 header_size; + __le32 header_crc32; + __le32 reserved1; + __le64 my_lba; + __le64 alternate_lba; + __le64 first_usable_lba; + __le64 last_usable_lba; efi_guid_t disk_guid; - unsigned char partition_entry_lba[8]; - unsigned char num_partition_entries[4]; - unsigned char sizeof_partition_entry[4]; - unsigned char partition_entry_array_crc32[4]; - unsigned char reserved2[GPT_BLOCK_SIZE - 92]; -} __attribute__ ((packed)) gpt_header; + __le64 partition_entry_lba; + __le32 num_partition_entries; + __le32 sizeof_partition_entry; + __le32 partition_entry_array_crc32; + u8 reserved2[GPT_BLOCK_SIZE - 92]; +} __packed gpt_header;
typedef struct _gpt_entry_attributes { - unsigned long long required_to_function:1; - unsigned long long reserved:47; - unsigned long long type_guid_specific:16; -} __attribute__ ((packed)) gpt_entry_attributes; + u64 required_to_function:1; + u64 reserved:47; + u64 type_guid_specific:16; +} __packed gpt_entry_attributes;
#define PARTNAME_SZ (72 / sizeof(efi_char16_t)) typedef struct _gpt_entry { efi_guid_t partition_type_guid; efi_guid_t unique_partition_guid; - unsigned char starting_lba[8]; - unsigned char ending_lba[8]; + __le64 starting_lba; + __le64 ending_lba; gpt_entry_attributes attributes; efi_char16_t partition_name[PARTNAME_SZ]; -} -__attribute__ ((packed)) gpt_entry; +} __packed gpt_entry;
typedef struct _legacy_mbr { - unsigned char boot_code[440]; - unsigned char unique_mbr_signature[4]; - unsigned char unknown[2]; + u8 boot_code[440]; + __le32 unique_mbr_signature; + __le16 unknown; struct partition partition_record[4]; - unsigned char signature[2]; -} __attribute__ ((packed)) legacy_mbr; + __le16 signature; +} __packed legacy_mbr;
#endif /* _DISK_PART_EFI_H */