The MSDOS Filesystem Constants/Data Structures/Prototypes. More...

#include <rtems.h>
#include <rtems/libio_.h>
#include <rtems/dosfs.h>
#include <rtems/thread.h>
#include "fat.h"
#include "fat_file.h"

Go to the source code of this file.

Data Structures
struct	msdos_fs_info_s

Macros
#define	MSDOS_NAME_NOT_FOUND_ERR 0x7D01

#define	MSDOS_DIRECTORY_ENTRY_STRUCT_SIZE 32 /* 32 bytes */

#define	MSDOS_DIR_NAME(x) (char *)((x) + 0)

#define	MSDOS_DIR_ENTRY_TYPE(x) (uint8_t *)((x) + 0)

#define	MSDOS_DIR_ATTR(x) (uint8_t *)((x) + 11)

#define	MSDOS_DIR_NT_RES(x) (uint8_t *)((x) + 12)

#define	MSDOS_DIR_LFN_CHECKSUM(x) (uint8_t *)((x) + 13)

#define	MSDOS_DIR_CRT_TIME_TENTH(x) (uint8_t *)((x) + 13)

#define	MSDOS_DIR_CRT_TIME(x) (uint16_t *)((x) + 14)

#define	MSDOS_DIR_CRT_DATE(x) (uint16_t *)((x) + 16)

#define	MSDOS_DIR_LAST_ACCESS_DATE(x) (uint16_t *)((x) + 18)

#define	MSDOS_DIR_FIRST_CLUSTER_HI(x) (uint16_t *)((x) + 20)

#define	MSDOS_DIR_WRITE_TIME(x) (uint16_t *)((x) + 22)

#define	MSDOS_DIR_WRITE_DATE(x) (uint16_t *)((x) + 24)

#define	MSDOS_DIR_FIRST_CLUSTER_LOW(x) (uint16_t *)((x) + 26)

#define	MSDOS_DIR_FILE_SIZE(x) (uint32_t *)((x) + 28)

#define	MSDOS_EXTRACT_CLUSTER_NUM(p)

#define	MSDOS_FILE_SIZE_OFFSET 28

#define	MSDOS_FILE_NAME_OFFSET 0

#define	MSDOS_FIRST_CLUSTER_HI_OFFSET 20

#define	MSDOS_FIRST_CLUSTER_LOW_OFFSET 26

#define	MSDOS_FILE_WDATE_OFFSET 24

#define	MSDOS_FILE_WTIME_OFFSET 22

#define	MSDOS_FILE_ADATE_OFFSET 18

#define	MSDOS_FILE_CDATE_OFFSET 16

#define	MSDOS_FILE_CTIME_OFFSET 14

#define	MSDOS_ATTR_READ_ONLY 0x01

#define	MSDOS_ATTR_HIDDEN 0x02

#define	MSDOS_ATTR_SYSTEM 0x04

#define	MSDOS_ATTR_VOLUME_ID 0x08

#define	MSDOS_ATTR_DIRECTORY 0x10

#define	MSDOS_ATTR_ARCHIVE 0x20

#define	MSDOS_ATTR_LFN

#define	MSDOS_ATTR_LFN_MASK

#define	MSDOS_LAST_LONG_ENTRY 0x40

#define	MSDOS_LAST_LONG_ENTRY_MASK 0x3F

#define	MSDOS_DT_2SECONDS_MASK 0x1F /* seconds divided by 2 */

#define	MSDOS_DT_2SECONDS_SHIFT 0

#define	MSDOS_DT_MINUTES_MASK 0x7E0 /* minutes */

#define	MSDOS_DT_MINUTES_SHIFT 5

#define	MSDOS_DT_HOURS_MASK 0xF800 /* hours */

#define	MSDOS_DT_HOURS_SHIFT 11

#define	MSDOS_DD_DAY_MASK 0x1F /* day of month */

#define	MSDOS_DD_DAY_SHIFT 0

#define	MSDOS_DD_MONTH_MASK 0x1E0 /* month */

#define	MSDOS_DD_MONTH_SHIFT 5

#define	MSDOS_DD_YEAR_MASK 0xFE00 /* year - 1980 */

#define	MSDOS_DD_YEAR_SHIFT 9

#define	MSDOS_THIS_DIR_ENTRY_EMPTY 0xE5

#define	MSDOS_THIS_DIR_ENTRY_AND_REST_EMPTY 0x00

#define	MSDOS_LFN_LEN_PER_ENTRY (13)

#define	MSDOS_NAME_MAX_UTF8_BYTES_PER_CHAR 4

#define	MSDOS_NAME_MIN_UTF8_BYTES_PER_CHAR 1

#define	MSDOS_SHORT_BASE_LEN 8 /* 8 characters */

#define	MSDOS_SHORT_EXT_LEN 3 /* 3 characters */

#define	MSDOS_SHORT_NAME_LEN

#define	MSDOS_NAME_MAX_LNF_LEN (255)

#define	MSDOS_NAME_MAX MSDOS_SHORT_NAME_LEN

#define	MSDOS_NAME_MAX_UTF8_SFN_BYTES

#define	MSDOS_NAME_MAX_WITH_DOT (MSDOS_NAME_MAX + 1)

#define	MSDOS_SFN_MAX_WITH_DOT_UTF8_BYTES

#define	MSDOS_NAME_MAX_LFN_WITH_DOT (260)

#define	MSDOS_NAME_LFN_BYTES_PER_CHAR (2)

#define	MSDOS_NAME_MAX_LFN_BYTES

#define	MSDOS_NAME_MAX_UTF8_LFN_BYTES

#define	MSDOS_ENTRY_LFN_UTF8_BYTES

#define	MSDOS_RES_NT_VALUE 0x00

#define	MSDOS_INIT_DIR_SIZE 0x00

#define	MSDOS_DOT_DIR_ENTRY_OFFSET 0x00 /* first entry in directory */

#define	MSDOS_DOTDOT_DIR_ENTRY_OFFSET 0x20 /* second entry in directory */

#define	DOT_NODE_P(p) ((char *)(p))

#define	DOTDOT_NODE_P(p) ((char *)((p) + MSDOS_DIRECTORY_ENTRY_STRUCT_SIZE))

#define	MSDOS_MAX_DIR_LENGTH 0x200000 /* 2,097,152 bytes */

#define	MSDOS_MAX_FILE_SIZE 0xFFFFFFFF /* 4 Gb */

#define	MSDOS_DPS512_NUM 16

Typedefs
typedef struct msdos_fs_info_s	msdos_fs_info_t

typedef enum msdos_name_types_e	msdos_name_type_t

typedef enum msdos_token_types_e	msdos_token_types_t

Enumerations
enum	msdos_name_types_e { MSDOS_NAME_INVALID = 0, MSDOS_NAME_SHORT, MSDOS_NAME_LONG }

enum	msdos_token_types_e { MSDOS_NO_MORE_PATH, MSDOS_CURRENT_DIR, MSDOS_UP_DIR, MSDOS_NAME, MSDOS_INVALID_TOKEN }

Functions
RTEMS_INLINE_ROUTINE void	msdos_fs_lock (msdos_fs_info_t *fs_info)

RTEMS_INLINE_ROUTINE void	msdos_fs_unlock (msdos_fs_info_t *fs_info)

void	msdos_shut_down (rtems_filesystem_mount_table_entry_t *temp_mt_entry)
	Shut down the MSDOS filesystem. More...

void	msdos_eval_path (rtems_filesystem_eval_path_context_t *ctx)

void	msdos_free_node_info (const rtems_filesystem_location_info_t *pathloc)
	Call the Fat-File close routine. More...

int	msdos_mknod (const rtems_filesystem_location_info_t loc, const char name, size_t namelen, mode_t mode, dev_t dev)
	Routine for node creation in a MSDOS filesystem. More...

int	msdos_rmnod (const rtems_filesystem_location_info_t parentloc, const rtems_filesystem_location_info_t loc)
	Remove node from MSDOS directory. More...

int	msdos_rename (const rtems_filesystem_location_info_t old_parent_loc, const rtems_filesystem_location_info_t old_loc, const rtems_filesystem_location_info_t new_parent_loc, const char new_name, size_t new_namelen)
	Rename a MSDOS filesystem node. More...

int	msdos_statvfs (const rtems_filesystem_location_info_t root_loc, struct statvfs sb)

void	msdos_lock (const rtems_filesystem_mount_table_entry_t *mt_entry)

void	msdos_unlock (const rtems_filesystem_mount_table_entry_t *mt_entry)

int	msdos_initialize_support (rtems_filesystem_mount_table_entry_t temp_mt_entry, const rtems_filesystem_operations_table op_table, const rtems_filesystem_file_handlers_r file_handlers, const rtems_filesystem_file_handlers_r directory_handlers, rtems_dosfs_convert_control *converter)
	MSDOS filesystem initialization routine. More...

ssize_t	msdos_file_read (rtems_libio_t iop, void buffer, size_t count)

ssize_t	msdos_file_write (rtems_libio_t iop, const void buffer, size_t count)

int	msdos_file_stat (const rtems_filesystem_location_info_t loc, struct stat buf)

int	msdos_file_ftruncate (rtems_libio_t *iop, off_t length)

int	msdos_file_sync (rtems_libio_t *iop)

ssize_t	msdos_dir_read (rtems_libio_t iop, void buffer, size_t count)

int	msdos_dir_sync (rtems_libio_t *iop)

int	msdos_dir_stat (const rtems_filesystem_location_info_t loc, struct stat buf)

int	msdos_creat_node (const rtems_filesystem_location_info_t parent_loc, fat_file_type_t type, const char name, int name_len, mode_t mode, const fat_file_fd_t *link_fd)
	Implements wake up version of the "signal" operation. More...

int	msdos_find_name (rtems_filesystem_location_info_t parent_loc, const char name, int name_len)

int	msdos_get_name_node (const rtems_filesystem_location_info_t parent_loc, bool create_node, const char name, int name_len, msdos_name_type_t name_type, fat_dir_pos_t dir_pos, char name_dir_entry)

int	msdos_dir_info_remove (rtems_filesystem_location_info_t *pathloc)

ssize_t	msdos_format_dirent_with_dot (char dst, const char src)

msdos_name_type_t	msdos_long_to_short (rtems_dosfs_convert_control converter, const char lfn, int lfn_len, char *sfn, int sfn_len)

ssize_t	msdos_filename_utf8_to_short_name_for_compare (rtems_dosfs_convert_control converter, const uint8_t utf8_name, const size_t utf8_name_size, void *short_name, const size_t short_name_size)

ssize_t	msdos_filename_utf8_to_short_name_for_save (rtems_dosfs_convert_control converter, const uint8_t utf8_name, const size_t utf8_name_size, void *short_name, const size_t short_name_size)

ssize_t	msdos_filename_utf8_to_long_name_for_compare (rtems_dosfs_convert_control converter, const uint8_t utf8_name, const size_t utf8_name_size, uint8_t *long_name, const size_t long_name_size)

ssize_t	msdos_filename_utf8_to_long_name_for_save (rtems_dosfs_convert_control converter, const uint8_t utf8_name, const size_t utf8_name_size, uint16_t *long_name, const size_t long_name_size)

ssize_t	msdos_get_utf16_string_from_long_entry (const char entry, uint16_t entry_string_buf, const size_t buf_size, bool is_first_entry)

void	msdos_date_unix2dos (unsigned int tsp, uint16_t ddp, uint16_t dtp)

unsigned int	msdos_date_dos2unix (unsigned int dd, unsigned int dt)

int	msdos_set_first_char4file_name (rtems_filesystem_mount_table_entry_t mt_entry, fat_dir_pos_t dir_pos, unsigned char first_char)

int	msdos_dir_is_empty (rtems_filesystem_mount_table_entry_t mt_entry, fat_file_fd_t fat_fd, bool *ret_val)

int	msdos_find_name_in_fat_file (rtems_filesystem_mount_table_entry_t mt_entry, fat_file_fd_t fat_fd, bool create_node, const uint8_t name_utf8, int name_len, msdos_name_type_t name_type, fat_dir_pos_t dir_pos, char *name_dir_entry)

int	msdos_find_node_by_cluster_num_in_fat_file (rtems_filesystem_mount_table_entry_t mt_entry, fat_file_fd_t fat_fd, uint32_t cl4find, fat_dir_pos_t dir_pos, char dir_entry)

int	msdos_get_dotdot_dir_info_cluster_num_and_offset (rtems_filesystem_mount_table_entry_t mt_entry, uint32_t cln, fat_dir_pos_t dir_pos, char *dir_entry)

int	msdos_sync (rtems_libio_t *iop)

uint8_t	msdos_lfn_checksum (const void *entry)

Variables
const rtems_filesystem_file_handlers_r	msdos_dir_handlers

const rtems_filesystem_file_handlers_r	msdos_file_handlers

const char *const	MSDOS_DOT_NAME

const char *const	MSDOS_DOTDOT_NAME

Detailed Description

The MSDOS Filesystem Constants/Data Structures/Prototypes.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Detailed Description