UbixOS: fs/fat/fat_access.h File Reference

UbixOS 2.0

#include "fat_defs.h"
#include "fat_opts.h"

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Data Structures
struct	disk_if

struct	fat_buffer

struct	fatfs

struct	fs_dir_ent

struct	fs_dir_list_status

Macros
#define	FAT_DIR_ENTRIES_PER_SECTOR (FAT_SECTOR_SIZE / FAT_DIR_ENTRY_SIZE)

#define	FAT_INIT_ENDIAN_ERROR (-4)

#define	FAT_INIT_INVALID_SECTOR_SIZE (-2)

#define	FAT_INIT_INVALID_SIGNATURE (-3)

#define	FAT_INIT_MEDIA_ACCESS_ERROR (-1)

#define	FAT_INIT_OK 0

#define	FAT_INIT_STRUCT_PACKING (-7)

#define	FAT_INIT_WRONG_FILESYS_TYPE (-5)

#define	FAT_INIT_WRONG_PARTITION_TYPE (-6)

Typedefs
typedef int(*	fn_diskio_read) (uint32 sector, uint8 *buffer, uint32 sector_count)

typedef int(*	fn_diskio_write) (uint32 sector, uint8 *buffer, uint32 sector_count)

typedef enum eFatType	tFatType

Enumerations
enum	eFatType { FAT_TYPE_16, FAT_TYPE_32 }

Functions
uint32	fatfs_get_file_entry (struct fatfs fs, uint32 Cluster, char nametofind, struct fat_dir_entry *sfEntry)

uint32	fatfs_get_root_cluster (struct fatfs *fs)

int	fatfs_init (struct fatfs *fs)

uint32	fatfs_lba_of_cluster (struct fatfs *fs, uint32 Cluster_Number)

int	fatfs_list_directory_next (struct fatfs fs, struct fs_dir_list_status dirls, struct fs_dir_ent *entry)

void	fatfs_list_directory_start (struct fatfs fs, struct fs_dir_list_status dirls, uint32 StartCluster)

int	fatfs_mark_file_deleted (struct fatfs fs, uint32 Cluster, char shortname)

int	fatfs_read_sector (struct fatfs fs, uint32 cluster, uint32 sector, uint8 target)

int	fatfs_sector_read (struct fatfs fs, uint32 lba, uint8 target, uint32 count)

int	fatfs_sector_reader (struct fatfs fs, uint32 Startcluster, uint32 offset, uint8 target)

int	fatfs_sector_write (struct fatfs fs, uint32 lba, uint8 target, uint32 count)

int	fatfs_sfn_exists (struct fatfs fs, uint32 Cluster, char shortname)

void	fatfs_show_details (struct fatfs *fs)

int	fatfs_update_file_length (struct fatfs fs, uint32 Cluster, char shortname, uint32 fileLength)

int	fatfs_update_timestamps (struct fat_dir_entry *directoryEntry, int create, int modify, int access)

int	fatfs_write_sector (struct fatfs fs, uint32 cluster, uint32 sector, uint8 target)

Macro Definition Documentation

◆ FAT_DIR_ENTRIES_PER_SECTOR

#define FAT_DIR_ENTRIES_PER_SECTOR (FAT_SECTOR_SIZE / FAT_DIR_ENTRY_SIZE)

Definition at line 19 of file fat_access.h.

◆ FAT_INIT_ENDIAN_ERROR

#define FAT_INIT_ENDIAN_ERROR (-4)

Definition at line 14 of file fat_access.h.

◆ FAT_INIT_INVALID_SECTOR_SIZE

#define FAT_INIT_INVALID_SECTOR_SIZE (-2)

Definition at line 12 of file fat_access.h.

◆ FAT_INIT_INVALID_SIGNATURE

#define FAT_INIT_INVALID_SIGNATURE (-3)

Definition at line 13 of file fat_access.h.

◆ FAT_INIT_MEDIA_ACCESS_ERROR

#define FAT_INIT_MEDIA_ACCESS_ERROR (-1)

Definition at line 11 of file fat_access.h.

◆ FAT_INIT_OK

#define FAT_INIT_OK 0

Definition at line 10 of file fat_access.h.

◆ FAT_INIT_STRUCT_PACKING

#define FAT_INIT_STRUCT_PACKING (-7)

Definition at line 17 of file fat_access.h.

◆ FAT_INIT_WRONG_FILESYS_TYPE

#define FAT_INIT_WRONG_FILESYS_TYPE (-5)

Definition at line 15 of file fat_access.h.

◆ FAT_INIT_WRONG_PARTITION_TYPE

#define FAT_INIT_WRONG_PARTITION_TYPE (-6)

Definition at line 16 of file fat_access.h.

Typedef Documentation

◆ fn_diskio_read

typedef int(* fn_diskio_read) (uint32 sector, uint8 *buffer, uint32 sector_count)

Definition at line 24 of file fat_access.h.

◆ fn_diskio_write

typedef int(* fn_diskio_write) (uint32 sector, uint8 *buffer, uint32 sector_count)

Definition at line 25 of file fat_access.h.

◆ tFatType

typedef enum eFatType tFatType

Enumeration Type Documentation

◆ eFatType

Enumerator
FAT_TYPE_16
FAT_TYPE_32

Definition at line 51 of file fat_access.h.

Function Documentation

◆ fatfs_get_file_entry()

uint32 fatfs_get_file_entry	(	struct fatfs *	fs,
		uint32	Cluster,
		char *	nametofind,
		struct fat_dir_entry *	sfEntry
	)

Definition at line 380 of file fat_access.c.

References FAT_DIR_ENTRIES_PER_SECTOR, FAT_DIR_ENTRY_SIZE, fatfs_compare_names(), fatfs_entry_lfn_exists(), fatfs_entry_lfn_invalid(), fatfs_entry_lfn_text(), fatfs_entry_sfn_only(), fatfs_lfn_cache_entry(), fatfs_lfn_cache_get(), fatfs_lfn_cache_init(), fatfs_sector_reader(), memcpy(), memset(), and NULL.

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◆ fatfs_get_root_cluster()

uint32 fatfs_get_root_cluster ( struct fatfs * fs )

Definition at line 373 of file fat_access.c.

◆ fatfs_init()

int fatfs_init ( struct fatfs * fs )

Definition at line 43 of file fat_access.c.

References BPB_BYTSPERSEC, BPB_FAT32_FATSZ32, BPB_FAT32_FSINFO, BPB_FAT32_ROOTCLUS, BPB_FATSZ16, BPB_NUMFATS, BPB_ROOTENTCNT, BPB_RSVDSECCNT, BPB_SECPERCLUS, BPB_TOTSEC16, BPB_TOTSEC32, FAT32_INVALID_CLUSTER, FAT_DIR_ENTRY_SIZE, FAT_INIT_ENDIAN_ERROR, FAT_INIT_INVALID_SECTOR_SIZE, FAT_INIT_INVALID_SIGNATURE, FAT_INIT_MEDIA_ACCESS_ERROR, FAT_INIT_OK, FAT_INIT_STRUCT_PACKING, FAT_INIT_WRONG_FILESYS_TYPE, FAT_SECTOR_SIZE, FAT_TYPE_16, FAT_TYPE_32, fatfs_fat_init(), GET_16BIT_WORD, GET_32BIT_WORD, PARTITION1_LBA_BEGIN_LOCATION, PARTITION1_TYPECODE_LOCATION, SIGNATURE_POSITION, and SIGNATURE_VALUE.

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◆ fatfs_lba_of_cluster()

uint32 fatfs_lba_of_cluster	(	struct fatfs *	fs,
		uint32	Cluster_Number
	)

Definition at line 191 of file fat_access.c.

References FAT_SECTOR_SIZE, and FAT_TYPE_16.

Referenced by fatfs_read_sector(), fatfs_sector_reader(), and fatfs_write_sector().

◆ fatfs_list_directory_next()

int fatfs_list_directory_next	(	struct fatfs *	fs,
		struct fs_dir_list_status *	dirls,
		struct fs_dir_ent *	entry
	)

Definition at line 719 of file fat_access.c.

References fs_dir_list_status::cluster, fs_dir_ent::cluster, FAT_DIR_ENTRIES_PER_SECTOR, FAT_DIR_ENTRY_SIZE, FAT_HTONL, FAT_HTONS, fatfs_entry_is_dir(), fatfs_entry_lfn_exists(), fatfs_entry_lfn_invalid(), fatfs_entry_lfn_text(), fatfs_entry_sfn_only(), fatfs_get_sfn_display_name(), fatfs_lfn_cache_entry(), fatfs_lfn_cache_get(), fatfs_lfn_cache_init(), FATFS_MAX_LONG_FILENAME, fatfs_sector_reader(), fs_dir_ent::filename, fs_dir_ent::is_dir, memset(), NULL, fs_dir_list_status::offset, fs_dir_list_status::sector, fs_dir_ent::size, and strncpy().

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◆ fatfs_list_directory_start()

void fatfs_list_directory_start	(	struct fatfs *	fs,
		struct fs_dir_list_status *	dirls,
		uint32	StartCluster
	)

Definition at line 708 of file fat_access.c.

References fs_dir_list_status::cluster, fs_dir_list_status::offset, and fs_dir_list_status::sector.

◆ fatfs_mark_file_deleted()

int fatfs_mark_file_deleted	(	struct fatfs *	fs,
		uint32	Cluster,
		char *	shortname
	)

Definition at line 643 of file fat_access.c.

References FAT_DIR_ENTRIES_PER_SECTOR, FAT_DIR_ENTRY_SIZE, fatfs_entry_lfn_invalid(), fatfs_entry_lfn_text(), fatfs_entry_sfn_only(), fatfs_sector_reader(), fatfs_update_timestamps(), FILE_HEADER_DELETED, memcpy(), and strncmp().

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◆ fatfs_read_sector()

int fatfs_read_sector	(	struct fatfs *	fs,
		uint32	cluster,
		uint32	sector,
		uint8 *	target
	)

Definition at line 263 of file fat_access.c.

References FAT_TYPE_16, and fatfs_lba_of_cluster().

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◆ fatfs_sector_read()

int fatfs_sector_read	(	struct fatfs *	fs,
		uint32	lba,
		uint8 *	target,
		uint32	count
	)

Definition at line 200 of file fat_access.c.

◆ fatfs_sector_reader()

int fatfs_sector_reader	(	struct fatfs *	fs,
		uint32	Startcluster,
		uint32	offset,
		uint8 *	target
	)

Definition at line 213 of file fat_access.c.

References FAT32_LAST_CLUSTER, FAT_TYPE_16, fatfs_find_next_cluster(), and fatfs_lba_of_cluster().

Referenced by fatfs_get_file_entry(), fatfs_list_directory_next(), fatfs_mark_file_deleted(), fatfs_sfn_exists(), and fatfs_update_file_length().

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◆ fatfs_sector_write()

int fatfs_sector_write	(	struct fatfs *	fs,
		uint32	lba,
		uint8 *	target,
		uint32	count
	)

Definition at line 206 of file fat_access.c.

◆ fatfs_sfn_exists()

int fatfs_sfn_exists	(	struct fatfs *	fs,
		uint32	Cluster,
		char *	shortname
	)

Definition at line 478 of file fat_access.c.

References FAT_DIR_ENTRIES_PER_SECTOR, FAT_DIR_ENTRY_SIZE, fatfs_entry_lfn_invalid(), fatfs_entry_lfn_text(), fatfs_entry_sfn_only(), fatfs_sector_reader(), and strncmp().

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◆ fatfs_show_details()

void fatfs_show_details ( struct fatfs * fs )

Definition at line 362 of file fat_access.c.

References FAT_PRINTF, and FAT_TYPE_32.

◆ fatfs_update_file_length()

int fatfs_update_file_length	(	struct fatfs *	fs,
		uint32	Cluster,
		char *	shortname,
		uint32	fileLength
	)

Definition at line 578 of file fat_access.c.

References FAT_DIR_ENTRIES_PER_SECTOR, FAT_DIR_ENTRY_SIZE, FAT_HTONL, fatfs_entry_lfn_invalid(), fatfs_entry_lfn_text(), fatfs_entry_sfn_only(), fatfs_sector_reader(), fatfs_update_timestamps(), memcpy(), and strncmp().

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◆ fatfs_update_timestamps()

int fatfs_update_timestamps	(	struct fat_dir_entry *	directoryEntry,
		int	create,
		int	modify,
		int	access
	)

Referenced by fatfs_mark_file_deleted(), and fatfs_update_file_length().

◆ fatfs_write_sector()

int fatfs_write_sector	(	struct fatfs *	fs,
		uint32	cluster,
		uint32	sector,
		uint8 *	target
	)

Definition at line 311 of file fat_access.c.

References FAT_TYPE_16, and fatfs_lba_of_cluster().

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fs
fat
fat_access.h
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