2024年1月8日发(作者：)

#define EXFAT_ENTRY_EOD (0x00)

#define EXFAT_ENTRY_BITMAP (0x01 | EXFAT_ENTRY_VALID)

#define EXFAT_ENTRY_UPCASE (0x02 | EXFAT_ENTRY_VALID)

#define EXFAT_ENTRY_LABEL (0x03 | EXFAT_ENTRY_VALID)

#define EXFAT_ENTRY_FILE (0x05 | EXFAT_ENTRY_VALID)

#define EXFAT_ENTRY_FILE_INFO (0x00 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)

#define EXFAT_ENTRY_FILE_NAME (0x01 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)

struct exfat_entry /* common container for all entries */

{

uint8_t type; /* any of EXFAT_ENTRY_xxx */

uint8_t data[31];

};

#define EXFAT_ENAME_MAX 15

struct exfat_entry_bitmap /* allocated clusters bitmap */

{

uint8_t type; /* EXFAT_ENTRY_BITMAP */

uint8_t __unknown1[19];

le32_t start_cluster;

le64_t size; /* in bytes */

};

struct exfat_entry_upcase /* upper case translation table */

{

uint8_t type; /* EXFAT_ENTRY_UPCASE */

uint8_t __unknown1[3];

le32_t checksum;

uint8_t __unknown2[12];

le32_t start_cluster;

le64_t size; /* in bytes */

};

struct exfat_entry_label /* volume label */

{

uint8_t type; /* EXFAT_ENTRY_LABEL */

uint8_t length; /* number of characters */

le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */

};

#define EXFAT_ATTRIB_RO 0x01

#define EXFAT_ATTRIB_HIDDEN 0x02

#define EXFAT_ATTRIB_SYSTEM 0x04

#define EXFAT_ATTRIB_VOLUME 0x08

#define EXFAT_ATTRIB_DIR 0x10

#define EXFAT_ATTRIB_ARCH 0x20

struct exfat_entry_meta1 /* file or directory info (part 1) */

{

uint8_t type; /* EXFAT_ENTRY_FILE */

uint8_t continuations;

le16_t checksum;

le16_t attrib; /* combination of EXFAT_ATTRIB_xxx */

le16_t __unknown1;

le16_t crtime, crdate; /* creation date and time */

le16_t mtime, mdate; /* latest modification date and time */

le16_t atime, adate; /* latest access date and time */

uint8_t crtime_cs; /* creation time in cs (centiseconds) */

uint8_t mtime_cs; /* latest modification time in cs */

uint8_t __unknown2[10];

};

#define EXFAT_FLAG_FRAGMENTED 1

#define EXFAT_FLAG_CONTIGUOUS 3

struct exfat_entry_meta2 /* file or directory info (part 2) */

{

uint8_t type; /* EXFAT_ENTRY_FILE_INFO */

uint8_t flag; /* fragmented or contiguous */

uint8_t __unknown1;

uint8_t name_length;

le16_t name_hash;

le16_t __unknown2;

le64_t real_size; /* in bytes, equals to size */

uint8_t __unknown3[4];

le32_t start_cluster;

le64_t size; /* in bytes, equals to real_size */

};

struct exfat_entry_name /* file or directory name */

{

uint8_t type; /* EXFAT_ENTRY_FILE_NAME */

uint8_t __unknown;

le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */

};