#ifndef _GPT_H
|
#define _GPT_H
|
|
#define MSDOS_MBR_SIGNATURE 0xAA55
|
#define EFI_PMBR_OSTYPE_EFI 0xEF
|
#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
|
|
#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
|
#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 PART_PROPERTY_BOOTABLE (1 << 2)
|
|
#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
|
((efi_guid_t) \
|
{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
|
(b) & 0xff, ((b) >> 8) & 0xff, \
|
(c) & 0xff, ((c) >> 8) & 0xff, \
|
(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
|
|
#define PARTITION_IDBLOCK_GUID \
|
EFI_GUID(0xDA2BB095, 0x390E, 0x48ca, \
|
0x90, 0x47, 0x05, 0xE8, 0x18, 0xB2, 0x97, 0xCE)
|
|
typedef unsigned char u8;
|
typedef unsigned short u16;
|
typedef unsigned int u32;
|
typedef unsigned long long u64;
|
|
#define uswap_16(x) \
|
((((x) & 0xff00) >> 8) | \
|
(((x) & 0x00ff) << 8))
|
#define uswap_32(x) \
|
((((x) & 0xff000000) >> 24) | \
|
(((x) & 0x00ff0000) >> 8) | \
|
(((x) & 0x0000ff00) << 8) | \
|
(((x) & 0x000000ff) << 24))
|
#define _uswap_64(x, sfx) \
|
((((x) & 0xff00000000000000##sfx) >> 56) | \
|
(((x) & 0x00ff000000000000##sfx) >> 40) | \
|
(((x) & 0x0000ff0000000000##sfx) >> 24) | \
|
(((x) & 0x000000ff00000000##sfx) >> 8) | \
|
(((x) & 0x00000000ff000000##sfx) << 8) | \
|
(((x) & 0x0000000000ff0000##sfx) << 24) | \
|
(((x) & 0x000000000000ff00##sfx) << 40) | \
|
(((x) & 0x00000000000000ff##sfx) << 56))
|
#if defined(__GNUC__)
|
# define uswap_64(x) _uswap_64(x, ull)
|
#else
|
# define uswap_64(x) _uswap_64(x, )
|
#endif
|
#define __LITTLE_ENDIAN__ 1
|
#ifdef __LITTLE_ENDIAN__
|
# define cpu_to_le16(x) (x)
|
# define cpu_to_le32(x) (x)
|
# define cpu_to_le64(x) (x)
|
# define le16_to_cpu(x) (x)
|
# define le32_to_cpu(x) (x)
|
# define le64_to_cpu(x) (x)
|
# define cpu_to_be16(x) uswap_16(x)
|
# define cpu_to_be32(x) uswap_32(x)
|
# define cpu_to_be64(x) uswap_64(x)
|
# define be16_to_cpu(x) uswap_16(x)
|
# define be32_to_cpu(x) uswap_32(x)
|
# define be64_to_cpu(x) uswap_64(x)
|
#else
|
# define cpu_to_le16(x) uswap_16(x)
|
# define cpu_to_le32(x) uswap_32(x)
|
# define cpu_to_le64(x) uswap_64(x)
|
# define le16_to_cpu(x) uswap_16(x)
|
# define le32_to_cpu(x) uswap_32(x)
|
# define le64_to_cpu(x) uswap_64(x)
|
# define cpu_to_be16(x) (x)
|
# define cpu_to_be32(x) (x)
|
# define cpu_to_be64(x) (x)
|
# define be16_to_cpu(x) (x)
|
# define be32_to_cpu(x) (x)
|
# define be64_to_cpu(x) (x)
|
#endif
|
|
|
typedef union {
|
struct {
|
unsigned int time_low;
|
unsigned short time_mid;
|
unsigned short time_hi_and_version;
|
unsigned char clock_seq_hi_and_reserved;
|
unsigned char clock_seq_low;
|
unsigned char node[6];
|
} uuid;
|
u8 raw[16];
|
} efi_guid_t;
|
#pragma pack(1)
|
typedef struct {
|
u16 usTag;/*0xEEEE*/
|
u16 usBackupGpt;/*0:no backup,1:has backup*/
|
u16 usEntryCount;
|
u64 entryDataSize[32];
|
} gpt_compact_info;
|
/* based on linux/include/genhd.h */
|
typedef struct {
|
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 */
|
u32 start_sect; /* starting sector counting from 0 */
|
u32 nr_sects; /* nr of sectors in partition */
|
} mbr_partition ;
|
|
/* based on linux/fs/partitions/efi.h */
|
typedef struct _gpt_header {
|
u64 signature; //固定字符串“EFI PART”
|
u32 revision; //GPT版本号
|
u32 header_size; //主GPT头大小
|
u32 header_crc32; //主GPT头的CRC32校验数据，注意不是累加和校验
|
u32 reserved1; //保留位
|
u64 my_lba; //主GPT头起始扇区号，LBA1
|
u64 alternate_lba; //主GPT头备份位置扇区号 LBA-1
|
u64 first_usable_lba; //GPT分区起始扇区号，LBA34
|
u64 last_usable_lba; //GPT分区结束扇区号，LBA-34
|
efi_guid_t disk_guid; //磁盘的GUID，唯一标识，这也意味着全硬盘复制是行不通的.
|
u64 partition_entry_lba; //分区表起始扇区号，LBA2
|
u32 num_partition_entries; //分区表项数目，MS强行给128
|
u32 sizeof_partition_entry; //每个分区表占用字节数，128
|
u32 partition_entry_array_crc32; //分区表CRC校验数据
|
} gpt_header;
|
|
typedef union _gpt_entry_attributes {
|
struct {
|
u64 required_to_function:1;
|
u64 no_block_io_protocol:1;
|
u64 legacy_bios_bootable:1;
|
u64 reserved:45;
|
u64 type_guid_specific:16;
|
} fields;
|
unsigned long long raw;
|
} gpt_entry_attributes;
|
|
#define PARTNAME_SZ 72
|
typedef struct _gpt_entry {
|
efi_guid_t partition_type_guid;
|
efi_guid_t unique_partition_guid;
|
u64 starting_lba;
|
u64 ending_lba;
|
gpt_entry_attributes attributes;
|
u16 partition_name[PARTNAME_SZ / sizeof(u16)];
|
} gpt_entry;
|
|
typedef struct _legacy_mbr {
|
u8 boot_code[440];
|
u32 unique_mbr_signature;
|
u16 unknown;
|
mbr_partition partition_record[4];
|
u16 signature;
|
} legacy_mbr;
|
#pragma pack()
|
#endif /* _GPT_H */
|
