/*----------------------------------------------------------------------------/ / FatFs - Generic FAT Filesystem module R0.14b / /-----------------------------------------------------------------------------/ / / Copyright (C) 2021, 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_DEFINED #define FF_DEFINED 86631 /* Revision ID */ #ifdef __cplusplus extern "C" { #endif #include "ffconf.h" /* FatFs configuration options */ #if FF_DEFINED != FFCONF_DEF #error Wrong configuration file (ffconf.h). #endif /* Integer types used for FatFs API */ #if defined(_WIN32) /* Windows VC++ (for development only) */ #define FF_INTDEF 2 #include typedef unsigned __int64 QWORD; #include #define isnan(v) _isnan(v) #define isinf(v) (!_finite(v)) #elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */ #define FF_INTDEF 2 #include 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 */ #else /* Earlier than C99 */ #define FF_INTDEF 1 typedef unsigned int UINT; /* int must be 16-bit or 32-bit */ typedef unsigned char BYTE; /* char must be 8-bit */ typedef unsigned short WORD; /* 16-bit unsigned integer */ typedef unsigned long DWORD; /* 32-bit unsigned integer */ typedef WORD WCHAR; /* UTF-16 character type */ #endif /* 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* 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; /* Associated physical drive */ BYTE n_fats; /* Number of FATs (1 or 2) */ BYTE wflag; /* win[] flag (b0:dirty) */ BYTE fsi_flag; /* FSINFO flags (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_REENTRANT FF_SYNC_t sobj; /* Identifier of sync object */ #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; /* Size of an FAT [sectors] */ LBA_t volbase; /* Volume base sector */ LBA_t fatbase; /* FAT base sector */ LBA_t dirbase; /* Root directory base sector/cluster */ 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 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* 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];/* Altenative 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 */ FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode); /* Open or create a file */ FRESULT f_close (FIL* fp); /* Close an open file object */ FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br); /* Read data from the file */ FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw); /* Write data to the file */ FRESULT f_lseek (FIL* fp, FSIZE_t ofs); /* Move file pointer of the file object */ FRESULT f_truncate (FIL* fp); /* Truncate the file */ FRESULT f_sync (FIL* fp); /* Flush cached data of the writing file */ FRESULT f_opendir (DIR* dp, const TCHAR* path); /* Open a directory */ FRESULT f_closedir (DIR* dp); /* Close an open directory */ FRESULT f_readdir (DIR* dp, FILINFO* fno); /* Read a directory item */ FRESULT f_findfirst (DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */ FRESULT f_findnext (DIR* dp, FILINFO* fno); /* Find next file */ FRESULT f_mkdir (const TCHAR* path); /* Create a sub directory */ FRESULT f_unlink (const TCHAR* path); /* Delete an existing file or directory */ FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */ FRESULT f_stat (const TCHAR* path, FILINFO* fno); /* Get file status */ FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of a file/dir */ FRESULT f_utime (const TCHAR* path, const FILINFO* fno); /* Change timestamp of a file/dir */ FRESULT f_chdir (const TCHAR* path); /* Change current directory */ FRESULT f_chdrive (const TCHAR* path); /* Change current drive */ FRESULT f_getcwd (TCHAR* buff, UINT len); /* Get current directory */ FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */ FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn); /* Get volume label */ FRESULT f_setlabel (const TCHAR* label); /* Set volume label */ FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */ FRESULT f_expand (FIL* fp, FSIZE_t fsz, BYTE opt); /* Allocate a contiguous block to the file */ FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt); /* Mount/Unmount a logical drive */ FRESULT f_mkfs (const TCHAR* path, const MKFS_PARM* opt, void* work, UINT len); /* Create a FAT volume */ FRESULT f_fdisk (BYTE pdrv, const LBA_t ptbl[], void* work); /* Divide a physical drive into some partitions */ FRESULT f_setcp (WORD cp); /* Set current code page */ int f_putc (TCHAR c, FIL* fp); /* Put a character to the file */ int f_puts (const TCHAR* str, FIL* cp); /* Put a string to the file */ int f_printf (FIL* fp, const TCHAR* str, ...); /* Put a formatted string to the file */ TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the file */ #define f_eof(fp) ((int)((fp)->fptr == (fp)->obj.objsize)) #define f_error(fp) ((fp)->err) #define f_tell(fp) ((fp)->fptr) #define f_size(fp) ((fp)->obj.objsize) #define f_rewind(fp) f_lseek((fp), 0) #define f_rewinddir(dp) f_readdir((dp), 0) #define f_rmdir(path) f_unlink(path) #define f_unmount(path) f_mount(0, path, 0) /*--------------------------------------------------------------*/ /* Additional user defined functions */ /* RTC function */ #if !FF_FS_READONLY && !FF_FS_NORTC DWORD get_fattime (void); #endif /* LFN support functions */ #if FF_USE_LFN >= 1 /* Code conversion (defined in unicode.c) */ 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 #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 /* Sync functions */ #if FF_FS_REENTRANT int ff_cre_syncobj (BYTE vol, FF_SYNC_t* sobj); /* Create a sync object */ int ff_req_grant (FF_SYNC_t sobj); /* Lock sync object */ void ff_rel_grant (FF_SYNC_t sobj); /* Unlock sync object */ int ff_del_syncobj (FF_SYNC_t sobj); /* Delete a 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 */ // extra additions for interfacing with melonDS typedef UINT (*ff_disk_read_cb)(BYTE* buff, LBA_t sector, UINT count); typedef UINT (*ff_disk_write_cb)(BYTE* buff, LBA_t sector, UINT count); void ff_disk_open(ff_disk_read_cb readcb, ff_disk_write_cb writecb); void ff_disk_close(); #ifdef __cplusplus } #endif #endif /* FF_DEFINED */