ff_types.h

/*----------------------------------------------------------------------------/
/  FatFs - Generic FAT Filesystem module  R0.15                               /
/-----------------------------------------------------------------------------/
/
/ Copyright (C) 2022, ChaN, all right reserved.
/
/ FatFs module is an open source software. Redistribution and use of FatFs in
/ source and binary forms, with or without modification, are permitted provided
/ that the following condition is met:
 
/ 1. Redistributions of source code must retain the above copyright notice,
/    this condition and the following disclaimer.
/
/ This software is provided by the copyright holder and contributors "AS IS"
/ and any warranties related to this software are DISCLAIMED.
/ The copyright owner or contributors be NOT LIABLE for any damages caused
/ by use of this software.
/
/----------------------------------------------------------------------------*/
 
 
#ifndef FF_TYPES_DEFINED
#define FF_TYPES_DEFINED
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "ffconf.h"     /* FatFs configuration options */
 
// #if FF_TYPES_DEFINED != FFCONF_DEF
// #error Wrong configuration file (ffconf.h).
// #endif
 
    
/* Integer types used for FatFs API */
 
#define FF_INTDEF 2
#include <stdint.h>
typedef unsigned int    UINT;   /* int must be 16-bit or 32-bit */
typedef unsigned char   BYTE;   /* char must be 8-bit */
typedef uint16_t        WORD;   /* 16-bit unsigned integer */
typedef uint32_t        DWORD;  /* 32-bit unsigned integer */
// typedef uint64_t     QWORD;  /* 64-bit unsigned integer */
typedef WORD            WCHAR;  /* UTF-16 character type */
 
 
/* Type of file size and LBA variables */
 
#if FF_FS_EXFAT
#if FF_INTDEF != 2
#error exFAT feature wants C99 or later
#endif
typedef QWORD FSIZE_t;
#if FF_LBA64
typedef QWORD LBA_t;
#else
typedef DWORD LBA_t;
#endif
#else
#if FF_LBA64
#error exFAT needs to be enabled when enable 64-bit LBA
#endif
typedef DWORD FSIZE_t;
typedef DWORD LBA_t;
#endif
 
 
 
/* Type of path name strings on FatFs API (TCHAR) */
 
#if FF_USE_LFN && FF_LFN_UNICODE == 1   /* Unicode in UTF-16 encoding */
typedef WCHAR TCHAR;
#define _T(x) L ## x
#define _TEXT(x) L ## x
#elif FF_USE_LFN && FF_LFN_UNICODE == 2 /* Unicode in UTF-8 encoding */
typedef char TCHAR;
#define _T(x) u8 ## x
#define _TEXT(x) u8 ## x
#elif FF_USE_LFN && FF_LFN_UNICODE == 3 /* Unicode in UTF-32 encoding */
typedef DWORD TCHAR;
#define _T(x) U ## x
#define _TEXT(x) U ## x
#elif FF_USE_LFN && (FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 3)
#error Wrong FF_LFN_UNICODE setting
#else                                   /* ANSI/OEM code in SBCS/DBCS */
typedef char TCHAR;
#define _T(x) x
#define _TEXT(x) x
#endif
 
 
 
/* Definitions of volume management */
 
#if FF_MULTI_PARTITION      /* Multiple partition configuration */
typedef struct {
    BYTE pd;    /* Physical drive number */
    BYTE pt;    /* Partition: 0:Auto detect, 1-4:Forced partition) */
} PARTITION;
extern PARTITION VolToPart[];   /* Volume - Partition mapping table */
#endif
 
#if FF_STR_VOLUME_ID
#ifndef FF_VOLUME_STRS
extern const char* __generic_ptr VolumeStr[FF_VOLUMES]; /* User defied volume ID */
#endif
#endif
 
 
 
/* Filesystem object structure (FATFS) */
 
typedef struct {
    BYTE    fs_type;        /* Filesystem type (0:not mounted) */
    BYTE    pdrv;           /* Volume hosting physical drive */
    BYTE    ldrv;           /* Logical drive number (used only when FF_FS_REENTRANT) */
    BYTE    n_fats;         /* Number of FATs (1 or 2) */
    BYTE    wflag;          /* win[] status (b0:dirty) */
    BYTE    fsi_flag;       /* FSINFO status (b7:disabled, b0:dirty) */
    WORD    id;             /* Volume mount ID */
    WORD    n_rootdir;      /* Number of root directory entries (FAT12/16) */
    WORD    csize;          /* Cluster size [sectors] */
#if FF_MAX_SS != FF_MIN_SS
    WORD    ssize;          /* Sector size (512, 1024, 2048 or 4096) */
#endif
#if FF_USE_LFN
    WCHAR*  lfnbuf;         /* LFN working buffer */
#endif
#if FF_FS_EXFAT
    BYTE*   dirbuf;         /* Directory entry block scratchpad buffer for exFAT */
#endif
#if !FF_FS_READONLY
    DWORD   last_clst;      /* Last allocated cluster */
    DWORD   free_clst;      /* Number of free clusters */
#endif
#if FF_FS_RPATH
    DWORD   cdir;           /* Current directory start cluster (0:root) */
#if FF_FS_EXFAT
    DWORD   cdc_scl;        /* Containing directory start cluster (invalid when cdir is 0) */
    DWORD   cdc_size;       /* b31-b8:Size of containing directory, b7-b0: Chain status */
    DWORD   cdc_ofs;        /* Offset in the containing directory (invalid when cdir is 0) */
#endif
#endif
    DWORD   n_fatent;       /* Number of FAT entries (number of clusters + 2) */
    DWORD   fsize;          /* Number of sectors per FAT */
    LBA_t   volbase;        /* Volume base sector */
    LBA_t   fatbase;        /* FAT base sector */
    LBA_t   dirbase;        /* Root directory base sector (FAT12/16) or cluster (FAT32/exFAT) */
    LBA_t   database;       /* Data base sector */
#if FF_FS_EXFAT
    LBA_t   bitbase;        /* Allocation bitmap base sector */
#endif
    LBA_t   winsect;        /* Current sector appearing in the win[] */
    BYTE    win[FF_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
} FATFS;
 
 
 
/* Object ID and allocation information (FFOBJID) */
 
typedef struct {
    FATFS*  fs;             /* Pointer to the hosting volume of this object */
    WORD    id;             /* Hosting volume's mount ID */
    BYTE    attr;           /* Object attribute */
    BYTE    stat;           /* Object chain status (b1-0: =0:not contiguous, =2:contiguous, =3:fragmented in this session, b2:sub-directory stretched) */
    DWORD   sclust;         /* Object data start cluster (0:no cluster or root directory) */
    FSIZE_t objsize;        /* Object size (valid when sclust != 0) */
#if FF_FS_EXFAT
    DWORD   n_cont;         /* Size of first fragment - 1 (valid when stat == 3) */
    DWORD   n_frag;         /* Size of last fragment needs to be written to FAT (valid when not zero) */
    DWORD   c_scl;          /* Containing directory start cluster (valid when sclust != 0) */
    DWORD   c_size;         /* b31-b8:Size of containing directory, b7-b0: Chain status (valid when c_scl != 0) */
    DWORD   c_ofs;          /* Offset in the containing directory (valid when file object and sclust != 0) */
#endif
#if FF_FS_LOCK
    UINT    lockid;         /* File lock ID origin from 1 (index of file semaphore table Files[]) */
#endif
} FFOBJID;
 
 
 
/* File object structure (FIL) */
 
typedef struct {
    FFOBJID obj;            /* Object identifier (must be the 1st member to detect invalid object pointer) */
    BYTE    flag;           /* File status flags */
    BYTE    err;            /* Abort flag (error code) */
    FSIZE_t fptr;           /* File read/write pointer (Zeroed on file open) */
    DWORD   clust;          /* Current cluster of fpter (invalid when fptr is 0) */
    LBA_t   sect;           /* Sector number appearing in buf[] (0:invalid) */
#if !FF_FS_READONLY
    LBA_t   dir_sect;       /* Sector number containing the directory entry (not used at exFAT) */
    BYTE*   dir_ptr;        /* Pointer to the directory entry in the win[] (not used at exFAT) */
#endif
#if FF_USE_FASTSEEK
    DWORD*  cltbl;          /* Pointer to the cluster link map table (nulled on open, set by application) */
#endif
#if !FF_FS_TINY
    BYTE    buf[FF_MAX_SS]; /* File private data read/write window */
#endif
} FIL;
 
 
 
/* Directory object structure (DIR) */
 
typedef struct {
    FFOBJID obj;            /* Object identifier */
    DWORD   dptr;           /* Current read/write offset */
    DWORD   clust;          /* Current cluster */
    LBA_t   sect;           /* Current sector (0:Read operation has terminated) */
    BYTE*   dir;            /* Pointer to the directory item in the win[] */
    BYTE    fn[12];         /* SFN (in/out) {body[8],ext[3],status[1]} */
#if FF_USE_LFN
    DWORD   blk_ofs;        /* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
#endif
#if FF_USE_FIND
    const TCHAR* __generic_ptr pat;     /* Pointer to the name matching pattern */
#endif
} DIR;
 
 
 
/* File information structure (FILINFO) */
 
typedef struct {
    FSIZE_t fsize;          /* File size */
    WORD    fdate;          /* Modified date */
    WORD    ftime;          /* Modified time */
    BYTE    fattrib;        /* File attribute */
#if FF_USE_LFN
    TCHAR   altname[FF_SFN_BUF + 1];/* Alternative file name */
    TCHAR   fname[FF_LFN_BUF + 1];  /* Primary file name */
#else
    TCHAR   fname[12 + 1];  /* File name */
#endif
} FILINFO;
 
 
 
/* Format parameter structure (MKFS_PARM) */
 
typedef struct {
    BYTE fmt;           /* Format option (FM_FAT, FM_FAT32, FM_EXFAT and FM_SFD) */
    BYTE n_fat;         /* Number of FATs */
    UINT align;         /* Data area alignment (sector) */
    UINT n_root;        /* Number of root directory entries */
    DWORD au_size;      /* Cluster size (byte) */
} MKFS_PARM;
 
 
 
/* File function return code (FRESULT) */
 
typedef enum {
    FR_OK = 0,              /* (0) Succeeded */
    FR_DISK_ERR,            /* (1) A hard error occurred in the low level disk I/O layer */
    FR_INT_ERR,             /* (2) Assertion failed */
    FR_NOT_READY,           /* (3) The physical drive cannot work */
    FR_NO_FILE,             /* (4) Could not find the file */
    FR_NO_PATH,             /* (5) Could not find the path */
    FR_INVALID_NAME,        /* (6) The path name format is invalid */
    FR_DENIED,              /* (7) Access denied due to prohibited access or directory full */
    FR_EXIST,               /* (8) Access denied due to prohibited access */
    FR_INVALID_OBJECT,      /* (9) The file/directory object is invalid */
    FR_WRITE_PROTECTED,     /* (10) The physical drive is write protected */
    FR_INVALID_DRIVE,       /* (11) The logical drive number is invalid */
    FR_NOT_ENABLED,         /* (12) The volume has no work area */
    FR_NO_FILESYSTEM,       /* (13) There is no valid FAT volume */
    FR_MKFS_ABORTED,        /* (14) The f_mkfs() aborted due to any problem */
    FR_TIMEOUT,             /* (15) Could not get a grant to access the volume within defined period */
    FR_LOCKED,              /* (16) The operation is rejected according to the file sharing policy */
    FR_NOT_ENOUGH_CORE,     /* (17) LFN working buffer could not be allocated */
    FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > FF_FS_LOCK */
    FR_INVALID_PARAMETER    /* (19) Given parameter is invalid */
} FRESULT;
 
 
 
 
/*--------------------------------------------------------------*/
/* FatFs Module Application Interface                           */
/*--------------------------------------------------------------*/
 
 
 
/*--------------------------------------------------------------*/
/* Additional Functions                                         */
/*--------------------------------------------------------------*/
 
/* RTC function (provided by user) */
#if !FF_FS_READONLY && !FF_FS_NORTC
DWORD get_fattime (void);   /* Get current time */
#endif
 
 
/* LFN support functions (defined in ffunicode.c) */
 
#if FF_USE_LFN >= 1
WCHAR ff_oem2uni (WCHAR oem, WORD cp);  /* OEM code to Unicode conversion */
WCHAR ff_uni2oem (DWORD uni, WORD cp);  /* Unicode to OEM code conversion */
DWORD ff_wtoupper (DWORD uni);          /* Unicode upper-case conversion */
#endif
 
 
/* O/S dependent functions (samples available in ffsystem.c) */
 
#if FF_USE_LFN == 3     /* Dynamic memory allocation */
void* ff_memalloc (UINT msize);     /* Allocate memory block */
void ff_memfree (void* mblock);     /* Free memory block */
#endif
#if FF_FS_REENTRANT /* Sync functions */
int ff_mutex_create (int vol);      /* Create a sync object */
void ff_mutex_delete (int vol);     /* Delete a sync object */
int ff_mutex_take (int vol);        /* Lock sync object */
void ff_mutex_give (int vol);       /* Unlock sync object */
#endif
 
 
 
 
/*--------------------------------------------------------------*/
/* Flags and Offset Address                                     */
/*--------------------------------------------------------------*/
 
/* File access mode and open method flags (3rd argument of f_open) */
#define FA_READ             0x01
#define FA_WRITE            0x02
#define FA_OPEN_EXISTING    0x00
#define FA_CREATE_NEW       0x04
#define FA_CREATE_ALWAYS    0x08
#define FA_OPEN_ALWAYS      0x10
#define FA_OPEN_APPEND      0x30
 
/* Fast seek controls (2nd argument of f_lseek) */
#define CREATE_LINKMAP  ((FSIZE_t)0 - 1)
 
/* Format options (2nd argument of f_mkfs) */
#define FM_FAT      0x01
#define FM_FAT32    0x02
#define FM_EXFAT    0x04
#define FM_ANY      0x07
#define FM_SFD      0x08
 
/* Filesystem type (FATFS.fs_type) */
#define FS_FAT12    1
#define FS_FAT16    2
#define FS_FAT32    3
#define FS_EXFAT    4
 
/* File attribute bits for directory entry (FILINFO.fattrib) */
#define AM_RDO  0x01    /* Read only */
#define AM_HID  0x02    /* Hidden */
#define AM_SYS  0x04    /* System */
#define AM_DIR  0x10    /* Directory */
#define AM_ARC  0x20    /* Archive */
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* FF_TYPES_DEFINED */