mirror of
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405 lines
15 KiB
C
405 lines
15 KiB
C
/*----------------------------------------------------------------------------/
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/ FatFs - Generic FAT Filesystem module R0.13c /
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/-----------------------------------------------------------------------------/
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/
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/ Copyright (C) 2018, ChaN, all right reserved.
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/
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/ FatFs module is an open source software. Redistribution and use of FatFs in
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/ source and binary forms, with or without modification, are permitted provided
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/ that the following condition is met:
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/
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/----------------------------------------------------------------------------*/
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#ifndef FF_DEFINED
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#define FF_DEFINED 86604 /* Revision ID */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "ffconf.h" /* FatFs configuration options */
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#if FF_DEFINED != FFCONF_DEF
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#error Wrong configuration file (ffconf.h).
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#endif
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/* Integer types used for FatFs API */
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#if defined(_WIN32) /* Main development platform */
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#define FF_INTDEF 2
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#include <windows.h>
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typedef unsigned __int64 QWORD;
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#elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */
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#define FF_INTDEF 2
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#include <stdint.h>
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typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
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typedef unsigned char BYTE; /* char must be 8-bit */
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typedef uint16_t WORD; /* 16-bit unsigned integer */
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typedef uint16_t WCHAR; /* 16-bit unsigned integer */
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typedef uint32_t DWORD; /* 32-bit unsigned integer */
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typedef uint64_t QWORD; /* 64-bit unsigned integer */
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#else /* Earlier than C99 */
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#define FF_INTDEF 1
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typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
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typedef unsigned char BYTE; /* char must be 8-bit */
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typedef unsigned short WORD; /* 16-bit unsigned integer */
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typedef unsigned short WCHAR; /* 16-bit unsigned integer */
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typedef unsigned long DWORD; /* 32-bit unsigned integer */
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#endif
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/* Definitions of volume management */
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#if FF_MULTI_PARTITION /* Multiple partition configuration */
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typedef struct {
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BYTE pd; /* Physical drive number */
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BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
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} PARTITION;
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extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
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#endif
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#if FF_STR_VOLUME_ID
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#ifndef FF_VOLUME_STRS
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extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */
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#endif
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#endif
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/* Type of path name strings on FatFs API */
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#ifndef _INC_TCHAR
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#define _INC_TCHAR
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#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */
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typedef WCHAR TCHAR;
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#define _T(x) L ## x
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#define _TEXT(x) L ## x
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#elif FF_USE_LFN && FF_LFN_UNICODE == 2 /* Unicode in UTF-8 encoding */
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typedef char TCHAR;
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#define _T(x) u8 ## x
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#define _TEXT(x) u8 ## x
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#elif FF_USE_LFN && FF_LFN_UNICODE == 3 /* Unicode in UTF-32 encoding */
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typedef DWORD TCHAR;
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#define _T(x) U ## x
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#define _TEXT(x) U ## x
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#elif FF_USE_LFN && (FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 3)
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#error Wrong FF_LFN_UNICODE setting
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#else /* ANSI/OEM code in SBCS/DBCS */
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typedef char TCHAR;
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#define _T(x) x
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#define _TEXT(x) x
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#endif
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#endif
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/* Type of file size variables */
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#if FF_FS_EXFAT
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#if FF_INTDEF != 2
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#error exFAT feature wants C99 or later
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#endif
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typedef QWORD FSIZE_t;
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#else
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typedef DWORD FSIZE_t;
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#endif
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/* Filesystem object structure (FATFS) */
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typedef struct {
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BYTE fs_type; /* Filesystem type (0:not mounted) */
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BYTE pdrv; /* Associated physical drive */
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BYTE n_fats; /* Number of FATs (1 or 2) */
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BYTE wflag; /* win[] flag (b0:dirty) */
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BYTE fsi_flag; /* FSINFO flags (b7:disabled, b0:dirty) */
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WORD id; /* Volume mount ID */
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WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
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WORD csize; /* Cluster size [sectors] */
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#if FF_MAX_SS != FF_MIN_SS
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WORD ssize; /* Sector size (512, 1024, 2048 or 4096) */
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#endif
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#if FF_USE_LFN
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WCHAR* lfnbuf; /* LFN working buffer */
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#endif
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#if FF_FS_EXFAT
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BYTE* dirbuf; /* Directory entry block scratchpad buffer for exFAT */
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#endif
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#if FF_FS_REENTRANT
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FF_SYNC_t sobj; /* Identifier of sync object */
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#endif
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#if !FF_FS_READONLY
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DWORD last_clst; /* Last allocated cluster */
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DWORD free_clst; /* Number of free clusters */
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#endif
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#if FF_FS_RPATH
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DWORD cdir; /* Current directory start cluster (0:root) */
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#if FF_FS_EXFAT
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DWORD cdc_scl; /* Containing directory start cluster (invalid when cdir is 0) */
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DWORD cdc_size; /* b31-b8:Size of containing directory, b7-b0: Chain status */
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DWORD cdc_ofs; /* Offset in the containing directory (invalid when cdir is 0) */
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#endif
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#endif
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DWORD n_fatent; /* Number of FAT entries (number of clusters + 2) */
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DWORD fsize; /* Size of an FAT [sectors] */
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DWORD volbase; /* Volume base sector */
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DWORD fatbase; /* FAT base sector */
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DWORD dirbase; /* Root directory base sector/cluster */
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DWORD database; /* Data base sector */
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#if FF_FS_EXFAT
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DWORD bitbase; /* Allocation bitmap base sector */
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#endif
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DWORD winsect; /* Current sector appearing in the win[] */
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BYTE win[FF_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
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} FATFS;
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/* Object ID and allocation information (FFOBJID) */
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typedef struct {
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FATFS* fs; /* Pointer to the hosting volume of this object */
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WORD id; /* Hosting volume mount ID */
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BYTE attr; /* Object attribute */
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BYTE stat; /* Object chain status (b1-0: =0:not contiguous, =2:contiguous, =3:fragmented in this session, b2:sub-directory stretched) */
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DWORD sclust; /* Object data start cluster (0:no cluster or root directory) */
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FSIZE_t objsize; /* Object size (valid when sclust != 0) */
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#if FF_FS_EXFAT
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DWORD n_cont; /* Size of first fragment - 1 (valid when stat == 3) */
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DWORD n_frag; /* Size of last fragment needs to be written to FAT (valid when not zero) */
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DWORD c_scl; /* Containing directory start cluster (valid when sclust != 0) */
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DWORD c_size; /* b31-b8:Size of containing directory, b7-b0: Chain status (valid when c_scl != 0) */
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DWORD c_ofs; /* Offset in the containing directory (valid when file object and sclust != 0) */
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#endif
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#if FF_FS_LOCK
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UINT lockid; /* File lock ID origin from 1 (index of file semaphore table Files[]) */
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#endif
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} FFOBJID;
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/* File object structure (FIL) */
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typedef struct {
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FFOBJID obj; /* Object identifier (must be the 1st member to detect invalid object pointer) */
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BYTE flag; /* File status flags */
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BYTE err; /* Abort flag (error code) */
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FSIZE_t fptr; /* File read/write pointer (Zeroed on file open) */
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DWORD clust; /* Current cluster of fpter (invalid when fptr is 0) */
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DWORD sect; /* Sector number appearing in buf[] (0:invalid) */
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#if !FF_FS_READONLY
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DWORD dir_sect; /* Sector number containing the directory entry (not used at exFAT) */
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BYTE* dir_ptr; /* Pointer to the directory entry in the win[] (not used at exFAT) */
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#endif
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#if FF_USE_FASTSEEK
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DWORD* cltbl; /* Pointer to the cluster link map table (nulled on open, set by application) */
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#endif
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#if !FF_FS_TINY
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BYTE buf[FF_MAX_SS]; /* File private data read/write window */
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#endif
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} FIL;
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/* Directory object structure (DIR) */
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typedef struct {
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FFOBJID obj; /* Object identifier */
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DWORD dptr; /* Current read/write offset */
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DWORD clust; /* Current cluster */
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DWORD sect; /* Current sector (0:Read operation has terminated) */
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BYTE* dir; /* Pointer to the directory item in the win[] */
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BYTE fn[12]; /* SFN (in/out) {body[8],ext[3],status[1]} */
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#if FF_USE_LFN
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DWORD blk_ofs; /* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
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#endif
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#if FF_USE_FIND
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const TCHAR* pat; /* Pointer to the name matching pattern */
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#endif
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} DIR;
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/* File information structure (FILINFO) */
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typedef struct {
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FSIZE_t fsize; /* File size */
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WORD fdate; /* Modified date */
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WORD ftime; /* Modified time */
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BYTE fattrib; /* File attribute */
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#if FF_USE_LFN
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TCHAR altname[FF_SFN_BUF + 1];/* Altenative file name */
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TCHAR fname[FF_LFN_BUF + 1]; /* Primary file name */
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#else
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TCHAR fname[12 + 1]; /* File name */
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#endif
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} FILINFO;
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/* File function return code (FRESULT) */
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typedef enum {
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FR_OK = 0, /* (0) Succeeded */
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FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
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FR_INT_ERR, /* (2) Assertion failed */
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FR_NOT_READY, /* (3) The physical drive cannot work */
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FR_NO_FILE, /* (4) Could not find the file */
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FR_NO_PATH, /* (5) Could not find the path */
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FR_INVALID_NAME, /* (6) The path name format is invalid */
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FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
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FR_EXIST, /* (8) Access denied due to prohibited access */
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FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
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FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
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FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
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FR_NOT_ENABLED, /* (12) The volume has no work area */
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FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
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FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any problem */
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FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
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FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
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FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
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FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > FF_FS_LOCK */
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FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
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} FRESULT;
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/*--------------------------------------------------------------*/
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/* FatFs module application interface */
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FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode); /* Open or create a file */
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FRESULT f_close (FIL* fp); /* Close an open file object */
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FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br); /* Read data from the file */
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FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw); /* Write data to the file */
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FRESULT f_lseek (FIL* fp, FSIZE_t ofs); /* Move file pointer of the file object */
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FRESULT f_truncate (FIL* fp); /* Truncate the file */
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FRESULT f_sync (FIL* fp); /* Flush cached data of the writing file */
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FRESULT f_opendir (DIR* dp, const TCHAR* path); /* Open a directory */
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FRESULT f_closedir (DIR* dp); /* Close an open directory */
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FRESULT f_readdir (DIR* dp, FILINFO* fno); /* Read a directory item */
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FRESULT f_findfirst (DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */
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FRESULT f_findnext (DIR* dp, FILINFO* fno); /* Find next file */
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FRESULT f_mkdir (const TCHAR* path); /* Create a sub directory */
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FRESULT f_unlink (const TCHAR* path); /* Delete an existing file or directory */
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FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */
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FRESULT f_stat (const TCHAR* path, FILINFO* fno); /* Get file status */
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FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of a file/dir */
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FRESULT f_utime (const TCHAR* path, const FILINFO* fno); /* Change timestamp of a file/dir */
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FRESULT f_chdir (const TCHAR* path); /* Change current directory */
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FRESULT f_chdrive (const TCHAR* path); /* Change current drive */
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FRESULT f_getcwd (TCHAR* buff, UINT len); /* Get current directory */
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FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */
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FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn); /* Get volume label */
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FRESULT f_setlabel (const TCHAR* label); /* Set volume label */
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FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
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FRESULT f_expand (FIL* fp, FSIZE_t fsz, BYTE opt); /* Allocate a contiguous block to the file */
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FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt); /* Mount/Unmount a logical drive */
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FRESULT f_mkfs (const TCHAR* path, BYTE opt, DWORD au, void* work, UINT len); /* Create a FAT volume */
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FRESULT f_fdisk (BYTE pdrv, const DWORD* szt, void* work); /* Divide a physical drive into some partitions */
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FRESULT f_setcp (WORD cp); /* Set current code page */
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int f_putc (TCHAR c, FIL* fp); /* Put a character to the file */
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int f_puts (const TCHAR* str, FIL* cp); /* Put a string to the file */
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int f_printf (FIL* fp, const TCHAR* str, ...); /* Put a formatted string to the file */
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TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the file */
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#define f_eof(fp) ((int)((fp)->fptr == (fp)->obj.objsize))
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#define f_error(fp) ((fp)->err)
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#define f_tell(fp) ((fp)->fptr)
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#define f_size(fp) ((fp)->obj.objsize)
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#define f_rewind(fp) f_lseek((fp), 0)
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#define f_rewinddir(dp) f_readdir((dp), 0)
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#define f_rmdir(path) f_unlink(path)
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#define f_unmount(path) f_mount(0, path, 0)
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#ifndef EOF
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#define EOF (-1)
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#endif
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/*--------------------------------------------------------------*/
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/* Additional user defined functions */
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/* RTC function */
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#if !FF_FS_READONLY && !FF_FS_NORTC
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DWORD get_fattime (void);
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#endif
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/* LFN support functions */
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#if FF_USE_LFN >= 1 /* Code conversion (defined in unicode.c) */
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WCHAR ff_oem2uni (WCHAR oem, WORD cp); /* OEM code to Unicode conversion */
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WCHAR ff_uni2oem (DWORD uni, WORD cp); /* Unicode to OEM code conversion */
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DWORD ff_wtoupper (DWORD uni); /* Unicode upper-case conversion */
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#endif
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#if FF_USE_LFN == 3 /* Dynamic memory allocation */
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void* ff_memalloc (UINT msize); /* Allocate memory block */
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void ff_memfree (void* mblock); /* Free memory block */
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#endif
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/* Sync functions */
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#if FF_FS_REENTRANT
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int ff_cre_syncobj (BYTE vol, FF_SYNC_t* sobj); /* Create a sync object */
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int ff_req_grant (FF_SYNC_t sobj); /* Lock sync object */
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void ff_rel_grant (FF_SYNC_t sobj); /* Unlock sync object */
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int ff_del_syncobj (FF_SYNC_t sobj); /* Delete a sync object */
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#endif
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/*--------------------------------------------------------------*/
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/* Flags and offset address */
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/* File access mode and open method flags (3rd argument of f_open) */
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#define FA_READ 0x01
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#define FA_WRITE 0x02
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#define FA_OPEN_EXISTING 0x00
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#define FA_CREATE_NEW 0x04
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#define FA_CREATE_ALWAYS 0x08
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#define FA_OPEN_ALWAYS 0x10
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#define FA_OPEN_APPEND 0x30
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/* Fast seek controls (2nd argument of f_lseek) */
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#define CREATE_LINKMAP ((FSIZE_t)0 - 1)
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/* Format options (2nd argument of f_mkfs) */
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#define FM_FAT 0x01
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#define FM_FAT32 0x02
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#define FM_EXFAT 0x04
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#define FM_ANY 0x07
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#define FM_SFD 0x08
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/* Filesystem type (FATFS.fs_type) */
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#define FS_FAT12 1
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#define FS_FAT16 2
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#define FS_FAT32 3
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#define FS_EXFAT 4
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/* File attribute bits for directory entry (FILINFO.fattrib) */
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#define AM_RDO 0x01 /* Read only */
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#define AM_HID 0x02 /* Hidden */
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#define AM_SYS 0x04 /* System */
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#define AM_DIR 0x10 /* Directory */
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#define AM_ARC 0x20 /* Archive */
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#ifdef __cplusplus
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}
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#endif
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#endif /* FF_DEFINED */
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