Data Structures
struct	FAT_BOOT_SECTOR_BASIC

struct	FAT_BOOT_SECTOR_EXT

struct	FAT32_BOOT_SECTOR_EXT

union	FAT_BSE

struct	FAT_BOOT_SECTOR

struct	FAT_FREE_INFO

struct	FAT_INFO_SECTOR

struct	FAT_DATE

struct	FAT_TIME

struct	FAT_DATE_TIME

struct	FAT_DIRECTORY_ENTRY

struct	FAT_DIRECTORY_LFN

Macros
#define	FAT_INFO_SIGNATURE 0x41615252

#define	FAT_INFO_BEGIN_SIGNATURE 0x61417272

#define	FAT_INFO_END_SIGNATURE 0xAA550000

#define	FAT_CLUSTER_SPECIAL_EXT (MAX_UINTN & (~0xF))

#define	FAT_CLUSTER_SPECIAL ((FAT_CLUSTER_SPECIAL_EXT) \| 0x07)

#define	FAT_CLUSTER_FREE 0

#define	FAT_CLUSTER_RESERVED (FAT_CLUSTER_SPECIAL)

#define	FAT_CLUSTER_BAD (FAT_CLUSTER_SPECIAL)

#define	FAT_CLUSTER_LAST (-1)

#define	FAT_END_OF_FAT_CHAIN(Cluster) ((Cluster) > (FAT_CLUSTER_SPECIAL))

#define	FAT_MIN_CLUSTER 2

#define	FAT_MAX_FAT12_CLUSTER 0xFF5

#define	FAT_MAX_FAT16_CLUSTER 0xFFF5

#define	FAT_CLUSTER_SPECIAL_FAT12 0xFF7

#define	FAT_CLUSTER_SPECIAL_FAT16 0xFFF7

#define	FAT_CLUSTER_SPECIAL_FAT32 0x0FFFFFF7

#define	FAT_CLUSTER_MASK_FAT12 0xFFF

#define	FAT_CLUSTER_UNMASK_FAT12 0xF000

#define	FAT_CLUSTER_MASK_FAT32 0x0FFFFFFF

#define	FAT_CLUSTER_UNMASK_FAT32 0xF0000000

#define	FAT_POS_FAT12(a) ((a) * 3 / 2)

#define	FAT_POS_FAT16(a) ((a) * 2)

#define	FAT_POS_FAT32(a) ((a) * 4)

#define	FAT_ODD_CLUSTER_FAT12(a) (((a) & 1) != 0)

#define	FAT_ATTRIBUTE_READ_ONLY 0x01

#define	FAT_ATTRIBUTE_HIDDEN 0x02

#define	FAT_ATTRIBUTE_SYSTEM 0x04

#define	FAT_ATTRIBUTE_VOLUME_ID 0x08

#define	FAT_ATTRIBUTE_DIRECTORY 0x10

#define	FAT_ATTRIBUTE_ARCHIVE 0x20

#define	FAT_ATTRIBUTE_DEVICE 0x40

#define	FAT_ATTRIBUTE_LFN 0x0F

#define	FAT_LFN_LAST 0x40

#define	MAX_LFN_ENTRIES 20

#define	LFN_CHAR1_LEN 5

#define	LFN_CHAR2_LEN 6

#define	LFN_CHAR3_LEN 2

#define	LFN_CHAR_TOTAL (LFN_CHAR1_LEN + LFN_CHAR2_LEN + LFN_CHAR3_LEN)

#define	LFN_ENTRY_NUMBER(a) (((a) + LFN_CHAR_TOTAL - 1) / LFN_CHAR_TOTAL)

#define	FAT_MAIN_NAME_LEN 8

#define	FAT_EXTEND_NAME_LEN 3

#define	FAT_NAME_LEN (FAT_MAIN_NAME_LEN + FAT_EXTEND_NAME_LEN)

#define	FAT_ENTRY_INFO_OFFSET 13

#define	DELETE_ENTRY_MARK 0xE5

#define	EMPTY_ENTRY_MARK 0x00

#define	FAT16_DIRTY_MASK 0x7fff

#define	FAT32_DIRTY_MASK 0xf7ffffff

#define	FAT_CASE_MIXED 0x01

#define	FAT_CASE_NAME_LOWER 0x08

#define	FAT_CASE_EXT_LOWER 0x10

#define	FAT_MAX_YEAR_FROM_1980 0x7f

Detailed Description

Definitions for on-disk FAT structures.

Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file FatFileSystem.h.

Macro Definition Documentation

◆ DELETE_ENTRY_MARK

#define DELETE_ENTRY_MARK 0xE5

Definition at line 76 of file FatFileSystem.h.

◆ EMPTY_ENTRY_MARK

#define EMPTY_ENTRY_MARK 0x00

Definition at line 77 of file FatFileSystem.h.

◆ FAT16_DIRTY_MASK

#define FAT16_DIRTY_MASK 0x7fff

Definition at line 82 of file FatFileSystem.h.

◆ FAT32_DIRTY_MASK

#define FAT32_DIRTY_MASK 0xf7ffffff

Definition at line 83 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_ARCHIVE

#define FAT_ATTRIBUTE_ARCHIVE 0x20

Definition at line 53 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_DEVICE

#define FAT_ATTRIBUTE_DEVICE 0x40

Definition at line 54 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_DIRECTORY

#define FAT_ATTRIBUTE_DIRECTORY 0x10

Definition at line 52 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_HIDDEN

#define FAT_ATTRIBUTE_HIDDEN 0x02

Definition at line 49 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_LFN

#define FAT_ATTRIBUTE_LFN 0x0F

Definition at line 55 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_READ_ONLY

#define FAT_ATTRIBUTE_READ_ONLY 0x01

Definition at line 48 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_SYSTEM

#define FAT_ATTRIBUTE_SYSTEM 0x04

Definition at line 50 of file FatFileSystem.h.

◆ FAT_ATTRIBUTE_VOLUME_ID

#define FAT_ATTRIBUTE_VOLUME_ID 0x08

Definition at line 51 of file FatFileSystem.h.

◆ FAT_CASE_EXT_LOWER

#define FAT_CASE_EXT_LOWER 0x10

Definition at line 89 of file FatFileSystem.h.

◆ FAT_CASE_MIXED

#define FAT_CASE_MIXED 0x01

Definition at line 87 of file FatFileSystem.h.

◆ FAT_CASE_NAME_LOWER

#define FAT_CASE_NAME_LOWER 0x08

Definition at line 88 of file FatFileSystem.h.

◆ FAT_CLUSTER_BAD

#define FAT_CLUSTER_BAD (FAT_CLUSTER_SPECIAL)

Definition at line 27 of file FatFileSystem.h.

◆ FAT_CLUSTER_FREE

#define FAT_CLUSTER_FREE 0

Definition at line 25 of file FatFileSystem.h.

◆ FAT_CLUSTER_LAST

#define FAT_CLUSTER_LAST (-1)

Definition at line 28 of file FatFileSystem.h.

◆ FAT_CLUSTER_MASK_FAT12

#define FAT_CLUSTER_MASK_FAT12 0xFFF

Definition at line 36 of file FatFileSystem.h.

◆ FAT_CLUSTER_MASK_FAT32

#define FAT_CLUSTER_MASK_FAT32 0x0FFFFFFF

Definition at line 38 of file FatFileSystem.h.

◆ FAT_CLUSTER_RESERVED

#define FAT_CLUSTER_RESERVED (FAT_CLUSTER_SPECIAL)

Definition at line 26 of file FatFileSystem.h.

◆ FAT_CLUSTER_SPECIAL

#define FAT_CLUSTER_SPECIAL ((FAT_CLUSTER_SPECIAL_EXT) | 0x07)

Definition at line 24 of file FatFileSystem.h.

◆ FAT_CLUSTER_SPECIAL_EXT

#define FAT_CLUSTER_SPECIAL_EXT (MAX_UINTN & (~0xF))

Definition at line 23 of file FatFileSystem.h.

◆ FAT_CLUSTER_SPECIAL_FAT12

#define FAT_CLUSTER_SPECIAL_FAT12 0xFF7

Definition at line 33 of file FatFileSystem.h.

◆ FAT_CLUSTER_SPECIAL_FAT16

#define FAT_CLUSTER_SPECIAL_FAT16 0xFFF7

Definition at line 34 of file FatFileSystem.h.

◆ FAT_CLUSTER_SPECIAL_FAT32

#define FAT_CLUSTER_SPECIAL_FAT32 0x0FFFFFF7

Definition at line 35 of file FatFileSystem.h.

◆ FAT_CLUSTER_UNMASK_FAT12

#define FAT_CLUSTER_UNMASK_FAT12 0xF000

Definition at line 37 of file FatFileSystem.h.

◆ FAT_CLUSTER_UNMASK_FAT32

#define FAT_CLUSTER_UNMASK_FAT32 0xF0000000

Definition at line 39 of file FatFileSystem.h.

◆ FAT_END_OF_FAT_CHAIN

#define FAT_END_OF_FAT_CHAIN ( Cluster ) ((Cluster) > (FAT_CLUSTER_SPECIAL))

Definition at line 29 of file FatFileSystem.h.

◆ FAT_ENTRY_INFO_OFFSET

#define FAT_ENTRY_INFO_OFFSET 13

Definition at line 75 of file FatFileSystem.h.

◆ FAT_EXTEND_NAME_LEN

#define FAT_EXTEND_NAME_LEN 3

Definition at line 70 of file FatFileSystem.h.

◆ FAT_INFO_BEGIN_SIGNATURE

#define FAT_INFO_BEGIN_SIGNATURE 0x61417272

Definition at line 18 of file FatFileSystem.h.

◆ FAT_INFO_END_SIGNATURE

#define FAT_INFO_END_SIGNATURE 0xAA550000

Definition at line 19 of file FatFileSystem.h.

◆ FAT_INFO_SIGNATURE

#define FAT_INFO_SIGNATURE 0x41615252

Definition at line 17 of file FatFileSystem.h.

◆ FAT_LFN_LAST

#define FAT_LFN_LAST 0x40

Definition at line 59 of file FatFileSystem.h.

◆ FAT_MAIN_NAME_LEN

#define FAT_MAIN_NAME_LEN 8

Definition at line 69 of file FatFileSystem.h.

◆ FAT_MAX_FAT12_CLUSTER

#define FAT_MAX_FAT12_CLUSTER 0xFF5

Definition at line 31 of file FatFileSystem.h.

◆ FAT_MAX_FAT16_CLUSTER

#define FAT_MAX_FAT16_CLUSTER 0xFFF5

Definition at line 32 of file FatFileSystem.h.

◆ FAT_MAX_YEAR_FROM_1980

#define FAT_MAX_YEAR_FROM_1980 0x7f

Definition at line 163 of file FatFileSystem.h.

◆ FAT_MIN_CLUSTER

#define FAT_MIN_CLUSTER 2

Definition at line 30 of file FatFileSystem.h.

◆ FAT_NAME_LEN

#define FAT_NAME_LEN (FAT_MAIN_NAME_LEN + FAT_EXTEND_NAME_LEN)

Definition at line 71 of file FatFileSystem.h.

◆ FAT_ODD_CLUSTER_FAT12

#define FAT_ODD_CLUSTER_FAT12 ( a ) (((a) & 1) != 0)

Definition at line 43 of file FatFileSystem.h.

◆ FAT_POS_FAT12

#define FAT_POS_FAT12 ( a ) ((a) * 3 / 2)

Definition at line 40 of file FatFileSystem.h.

◆ FAT_POS_FAT16

#define FAT_POS_FAT16 ( a ) ((a) * 2)

Definition at line 41 of file FatFileSystem.h.

◆ FAT_POS_FAT32

#define FAT_POS_FAT32 ( a ) ((a) * 4)

Definition at line 42 of file FatFileSystem.h.

◆ LFN_CHAR1_LEN

#define LFN_CHAR1_LEN 5

Definition at line 61 of file FatFileSystem.h.

◆ LFN_CHAR2_LEN

#define LFN_CHAR2_LEN 6

Definition at line 62 of file FatFileSystem.h.

◆ LFN_CHAR3_LEN

#define LFN_CHAR3_LEN 2

Definition at line 63 of file FatFileSystem.h.

◆ LFN_CHAR_TOTAL

#define LFN_CHAR_TOTAL (LFN_CHAR1_LEN + LFN_CHAR2_LEN + LFN_CHAR3_LEN)

Definition at line 64 of file FatFileSystem.h.

◆ LFN_ENTRY_NUMBER

#define LFN_ENTRY_NUMBER ( a ) (((a) + LFN_CHAR_TOTAL - 1) / LFN_CHAR_TOTAL)

Definition at line 65 of file FatFileSystem.h.

◆ MAX_LFN_ENTRIES

#define MAX_LFN_ENTRIES 20

Definition at line 60 of file FatFileSystem.h.

Data Structures

Macros