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/*----------------------------------------------------------------------------/
/ FatFs - FAT file system module R0.08b (C)ChaN, 2011
/-----------------------------------------------------------------------------/
/ FatFs module is a generic FAT file system module for small embedded systems.
/ This is a free software that opened for education, research and commercial
/ developments under license policy of following terms.
/
/ Copyright (C) 2011, ChaN, all right reserved.
/
/ * The FatFs module is a free software and there is NO WARRANTY.
/ * No restriction on use. You can use, modify and redistribute it for
/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
/ * Redistributions of source code must retain the above copyright notice.
/
/-----------------------------------------------------------------------------/
/ Feb 26,'06 R0.00 Prototype.
/
/ Apr 29,'06 R0.01 First stable version.
/
/ Jun 01,'06 R0.02 Added FAT12 support.
/ Removed unbuffered mode.
/ Fixed a problem on small (<32M) partition.
/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
/
/ Sep 22,'06 R0.03 Added f_rename().
/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
/ Fixed f_mkdir() creates incorrect directory on FAT32.
/
/ Feb 04,'07 R0.04 Supported multiple drive system.
/ Changed some interfaces for multiple drive system.
/ Changed f_mountdrv() to f_mount().
/ Added f_mkfs().
/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
/ Added a capability of extending file size to f_lseek().
/ Added minimization level 3.
/ Fixed an endian sensitive code in f_mkfs().
/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
/ Added FSInfo support.
/ Fixed DBCS name can result FR_INVALID_NAME.
/ Fixed short seek (<= csize) collapses the file object.
/
/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
/ Fixed f_mkdir() on FAT32 creates incorrect directory.
/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
/ Fixed off by one error at FAT sub-type determination.
/ Fixed btr in f_read() can be mistruncated.
/ Fixed cached sector is not flushed when create and close without write.
/
/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
/ Improved performance of f_lseek() on moving to the same or following cluster.
/
/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
/ Added long file name feature.
/ Added multiple code page feature.
/ Added re-entrancy for multitask operation.
/ Added auto cluster size selection to f_mkfs().
/ Added rewind option to f_readdir().
/ Changed result code of critical errors.
/ Renamed string functions to avoid name collision.
/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
/ Added multiple sector size feature.
/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
/ Fixed wrong cache control in f_lseek().
/ Added relative path feature.
/ Added f_chdir() and f_chdrive().
/ Added proper case conversion to extended char.
/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
/ Fixed name matching error on the 13 char boundary.
/ Added a configuration option, _LFN_UNICODE.
/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
/
/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
/ Added file lock feature. (_FS_SHARE)
/ Added fast seek feature. (_USE_FASTSEEK)
/ Changed some types on the API, XCHAR->TCHAR.
/ Changed fname member in the FILINFO structure on Unicode cfg.
/ String functions support UTF-8 encoding files on Unicode cfg.
/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
/ Added sector erase feature. (_USE_ERASE)
/ Moved file lock semaphore table from fs object to the bss.
/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
/ Fixed f_mkfs() creates wrong FAT32 volume.
/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
/ f_lseek() reports required table size on creating CLMP.
/ Extended format syntax of f_printf function.
/ Ignores duplicated directory separators in given path names.
/---------------------------------------------------------------------------*/
#include "ff.h" /* FatFs configurations and declarations */
#include "diskio.h" /* Declarations of low level disk I/O functions */
#include <string.h>
/*--------------------------------------------------------------------------
Module Private Definitions
---------------------------------------------------------------------------*/
#if _FATFS != 8237
#error Wrong include file (ff.h).
#endif
/* Definitions on sector size */
#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
#error Wrong sector size.
#endif
#if _MAX_SS != 512
#define SS(fs) ((fs)->ssize) /* Multiple sector size */
#else
#define SS(fs) 512U /* Fixed sector size */
#endif
/* Reentrancy related */
#if _FS_REENTRANT
#if _USE_LFN == 1
#error Static LFN work area must not be used in re-entrant configuration.
#endif
#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
#else
#define ENTER_FF(fs)
#define LEAVE_FF(fs, res) return res
#endif
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
/* File shareing feature */
#if _FS_SHARE
#if _FS_READONLY
#error _FS_SHARE must be 0 on read-only cfg.
#endif
typedef struct {
FATFS
*fs
; /* File ID 1, volume (NULL:blank entry) */
DWORD clu
; /* File ID 2, directory */
WORD idx
; /* File ID 3, directory index */
WORD ctr
; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
} FILESEM
;
#endif
/* Misc definitions */
//#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
#define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);}
/* DBCS code ranges and SBCS extend char conversion table */
#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
#define _DF1S 0x81 /* DBC 1st byte range 1 start */
#define _DF1E 0x9F /* DBC 1st byte range 1 end */
#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
#define _DF2E 0xFC /* DBC 1st byte range 2 end */
#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
#define _DF1S 0x81
#define _DF1E 0xFE
#define _DS1S 0x40
#define _DS1E 0x7E
#define _DS2S 0x80
#define _DS2E 0xFE
#elif _CODE_PAGE == 949 /* Korean */
#define _DF1S 0x81
#define _DF1E 0xFE
#define _DS1S 0x41
#define _DS1E 0x5A
#define _DS2S 0x61
#define _DS2E 0x7A
#define _DS3S 0x81
#define _DS3E 0xFE
#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
#define _DF1S 0x81
#define _DF1E 0xFE
#define _DS1S 0x40
#define _DS1E 0x7E
#define _DS2S 0xA1
#define _DS2E 0xFE
#elif _CODE_PAGE == 437 /* U.S. (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 720 /* Arabic (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 737 /* Greek (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 775 /* Baltic (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
#define _DF1S 0
#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 857 /* Turkish (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 866 /* Russian (OEM) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
#elif _CODE_PAGE == 1253 /* Greek (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
#define _DF1S 0
#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
#if _USE_LFN
#error Cannot use LFN feature without valid code page.
#endif
#define _DF1S 0
#else
#error Unknown code page
#endif
/* Character code support macros */
#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
#define IsLower(c) (((c)>='a')&&((c)<='z'))
#define IsDigit(c) (((c)>='0')&&((c)<='9'))
#if _DF1S /* Code page is DBCS */
#ifdef _DF2S /* Two 1st byte areas */
#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
#else /* One 1st byte area */
#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
#endif
#ifdef _DS3S /* Three 2nd byte areas */
#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
#else /* Two 2nd byte areas */
#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
#endif
#else /* Code page is SBCS */
#define IsDBCS1(c) 0
#define IsDBCS2(c) 0
#endif /* _DF1S */
/* Name status flags */
#define NS 11 /* Index of name status byte in fn[] */
#define NS_LOSS 0x01 /* Out of 8.3 format */
#define NS_LFN 0x02 /* Force to create LFN entry */
#define NS_LAST 0x04 /* Last segment */
#define NS_BODY 0x08 /* Lower case flag (body) */
#define NS_EXT 0x10 /* Lower case flag (ext) */
#define NS_DOT 0x20 /* Dot entry */
/* FAT sub-type boundaries */
/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
/* FatFs refers the members in the FAT structures as byte array instead of
/ structure member because the structure is not binary compatible between
/ different platforms */
#define BS_jmpBoot 0 /* Jump instruction (3) */
#define BS_OEMName 3 /* OEM name (8) */
#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
#define BPB_NumFATs 16 /* Number of FAT copies (1) */
#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
#define BPB_TotSec16 19 /* Volume size [sector] (2) */
#define BPB_Media 21 /* Media descriptor (1) */
#define BPB_FATSz16 22 /* FAT size [sector] (2) */
#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
#define BPB_NumHeads 26 /* Number of heads (2) */
#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
#define BPB_TotSec32 32 /* Volume size [sector] (4) */
#define BS_DrvNum 36 /* Physical drive number (2) */
#define BS_BootSig 38 /* Extended boot signature (1) */
#define BS_VolID 39 /* Volume serial number (4) */
#define BS_VolLab 43 /* Volume label (8) */
#define BS_FilSysType 54 /* File system type (1) */
#define BPB_FATSz32 36 /* FAT size [sector] (4) */
#define BPB_ExtFlags 40 /* Extended flags (2) */
#define BPB_FSVer 42 /* File system version (2) */
#define BPB_RootClus 44 /* Root dir first cluster (4) */
#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
#define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */
#define BS_DrvNum32 64 /* Physical drive number (2) */
#define BS_BootSig32 66 /* Extended boot signature (1) */
#define BS_VolID32 67 /* Volume serial number (4) */
#define BS_VolLab32 71 /* Volume label (8) */
#define BS_FilSysType32 82 /* File system type (1) */
#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
#define MBR_Table 446 /* MBR: Partition table offset (2) */
#define SZ_PTE 16 /* MBR: Size of a partition table entry */
#define BS_55AA 510 /* Boot sector signature (2) */
#define DIR_Name 0 /* Short file name (11) */
#define DIR_Attr 11 /* Attribute (1) */
#define DIR_NTres 12 /* NT flag (1) */
#define DIR_CrtTime 14 /* Created time (2) */
#define DIR_CrtDate 16 /* Created date (2) */
#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
#define DIR_WrtTime 22 /* Modified time (2) */
#define DIR_WrtDate 24 /* Modified date (2) */
#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
#define DIR_FileSize 28 /* File size (4) */
#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
#define LDIR_Attr 11 /* LFN attribute (1) */
#define LDIR_Type 12 /* LFN type (1) */
#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
#define LDIR_FstClusLO 26 /* Filled by zero (0) */
#define SZ_DIR 32 /* Size of a directory entry */
#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
#define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */
#define NDDE 0x05 /* Replacement of a character collides with DDE */
/*------------------------------------------------------------*/
/* Work area */
#if _VOLUMES
//extern
//FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
#else
#error Number of drives must not be 0.
#endif
extern WORD Fsid
; /* File system mount ID */
#if _FS_RPATH
//extern BYTE CurrVol; /* Current drive */
//extern DWORD CurrDir; /* Current dir start claster */
#endif
#if _FS_SHARE
static
FILESEM Files
[_FS_SHARE
]; /* File lock semaphores */
#endif
#if _USE_LFN == 0 /* No LFN */
static BYTE sfn
[12];
#define DEF_NAMEBUF
#define INIT_BUF(dobj) (dobj).fn = sfn
#define FREE_BUF()
#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
static WCHAR LfnBuf
[_MAX_LFN
+1];
static BYTE sfn
[12];
#define DEF_NAMEBUF
#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
#define FREE_BUF()
#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
#define FREE_BUF()
#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
(dobj).lfn = lfn; (dobj).fn = sfn; }
#define FREE_BUF() ff_memfree(lfn)
#else
#error Wrong LFN configuration.
#endif
//no_init unsigned char pathbuf[256];
#define pathbuf ((unsigned char *) 0x3a00)
/*--------------------------------------------------------------------------
Module Private Functions
---------------------------------------------------------------------------*/
extern DWORD LD_CLUST
(BYTE
*);
/*-----------------------------------------------------------------------*/
/* String functions */
/*-----------------------------------------------------------------------*/
/*-----------------------------------------------------------------------*/
/* Request/Release grant to access the volume */
/*-----------------------------------------------------------------------*/
#if _FS_REENTRANT
static
int lock_fs
(
FATFS
*fs
/* File system object */
)
{
return ff_req_grant
(fs
->sobj
);
}
static
void unlock_fs
(
FATFS
*fs
, /* File system object */
FRESULT res
/* Result code to be returned */
)
{
if (res
!= FR_NOT_ENABLED
&&
res
!= FR_INVALID_DRIVE
&&
res
!= FR_INVALID_OBJECT
&&
res
!= FR_TIMEOUT
) {
ff_rel_grant
(fs
->sobj
);
}
}
#endif
/*-----------------------------------------------------------------------*/
/* File shareing control functions */
/*-----------------------------------------------------------------------*/
#if _FS_SHARE
static
FRESULT chk_lock
( /* Check if the file can be accessed */
DIR
* dj
, /* Directory object pointing the file to be checked */
int acc
/* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
)
{
UINT i
, be
;
/* Search file semaphore table */
for (i
= be
= 0; i
< _FS_SHARE
; i
++) {
if (Files
[i
].
fs) { /* Existing entry */
if (Files
[i
].
fs == dj
->fs
&& /* Check if the file matched with an open file */
Files
[i
].
clu == dj
->sclust
&&
Files
[i
].
idx == dj
->index
) break;
} else { /* Blank entry */
be
++;
}
}
if (i
== _FS_SHARE
) /* The file is not opened */
return (be
|| acc
== 2) ? FR_OK
: FR_TOO_MANY_OPEN_FILES
; /* Is there a blank entry for new file? */
/* The file has been opened. Reject any open against writing file and all write mode open */
return (acc
|| Files
[i
].
ctr == 0x100) ? FR_LOCKED
: FR_OK
;
}
static
int enq_lock
( /* Check if an entry is available for a new file */
FATFS
* fs
/* File system object */
)
{
UINT i
;
for (i
= 0; i
< _FS_SHARE
&& Files
[i
].
fs; i
++) ;
return (i
== _FS_SHARE
) ? 0 : 1;
}
static
UINT inc_lock
( /* Increment file open counter and returns its index (0:int error) */
DIR
* dj
, /* Directory object pointing the file to register or increment */
int acc
/* Desired access mode (0:Read, !0:Write) */
)
{
UINT i
;
for (i
= 0; i
< _FS_SHARE
; i
++) { /* Find the file */
if (Files
[i
].
fs == dj
->fs
&&
Files
[i
].
clu == dj
->sclust
&&
Files
[i
].
idx == dj
->index
) break;
}
if (i
== _FS_SHARE
) { /* Not opened. Register it as new. */
for (i
= 0; i
< _FS_SHARE
&& Files
[i
].
fs; i
++) ;
if (i
== _FS_SHARE
) return 0; /* No space to register (int err) */
Files
[i
].
fs = dj
->fs
;
Files
[i
].
clu = dj
->sclust
;
Files
[i
].
idx = dj
->index
;
Files
[i
].
ctr = 0;
}
if (acc
&& Files
[i
].
ctr) return 0; /* Access violation (int err) */
Files
[i
].
ctr = acc
? 0x100 : Files
[i
].
ctr + 1; /* Set semaphore value */
return i
+ 1;
}
static
FRESULT dec_lock
( /* Decrement file open counter */
UINT i
/* Semaphore index */
)
{
WORD n
;
FRESULT res
;
if (--i
< _FS_SHARE
) {
n
= Files
[i
].
ctr;
if (n
== 0x100) n
= 0;
if (n
) n
--;
Files
[i
].
ctr = n
;
if (!n
) Files
[i
].
fs = 0;
res
= FR_OK
;
} else {
res
= FR_INT_ERR
;
}
return res
;
}
static
void clear_lock
( /* Clear lock entries of the volume */
FATFS
*fs
)
{
UINT i
;
for (i
= 0; i
< _FS_SHARE
; i
++) {
if (Files
[i
].
fs == fs
) Files
[i
].
fs = 0;
}
}
#endif
/*-----------------------------------------------------------------------*/
/* Change window offset */
/*-----------------------------------------------------------------------*/
static
FRESULT move_window
(
FATFS
*fs
, /* File system object */
DWORD sector
/* Sector number to make appearance in the fs->win[] */
) /* Move to zero only writes back dirty window */
{
DWORD wsect
;
wsect
= fs
->winsect
;
if (wsect
!= sector
) { /* Changed current window */
#if !_FS_READONLY
if (fs
->wflag
) { /* Write back dirty window if needed */
SET_DIO_PAR
(fs
->drv
, fs
->win
, wsect
,1);
if (drv_calls.
write_from_buf() != RES_OK
)
return FR_DISK_ERR
;
fs
->wflag
= 0;
if (wsect
< (fs
->fatbase
+ fs
->fsize
)) { /* In FAT area */
BYTE nf
;
for (nf
= fs
->n_fats
; nf
> 1; nf
--) { /* Reflect the change to all FAT copies */
wsect
+= fs
->fsize
;
SET_DIO_PAR
(fs
->drv
, fs
->win
, wsect
,1);
drv_calls.
write_from_buf();
}
}
}
#endif
if (sector
) {
SET_DIO_PAR
(fs
->drv
, fs
->win
, sector
,1);
if (drv_calls.
read_to_buf() != RES_OK
)
return FR_DISK_ERR
;
fs
->winsect
= sector
;
}
}
return FR_OK
;
}
/*-----------------------------------------------------------------------*/
/* Clean-up cached data */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY
static
FRESULT sync
( /* FR_OK: successful, FR_DISK_ERR: failed */
FATFS
*fs
/* File system object */
)
{
FRESULT res
;
res
= move_window
(fs
, 0);
if (res
== FR_OK
) {
/* Update FSInfo sector if needed */
if (fs
->fs_type
== FS_FAT32
&& fs
->fsi_flag
) {
fs
->fsi_flag
= 0;
fs
->winsect
= 0;
/* Create FSInfo structure */
memset(fs
->win
, 0, 512);
ST_WORD
(fs
->win
+BS_55AA
, 0xAA55);
ST_DWORD
(fs
->win
+FSI_LeadSig
, 0x41615252);
ST_DWORD
(fs
->win
+FSI_StrucSig
, 0x61417272);
ST_DWORD
(fs
->win
+FSI_Free_Count
, fs
->free_clust
);
ST_DWORD
(fs
->win
+FSI_Nxt_Free
, fs
->last_clust
);
/* Write it into the FSInfo sector */
SET_DIO_PAR
(fs
->drv
, fs
->win
, fs
->fsi_sector
,1);
drv_calls.
write_from_buf();
}
/* Make sure that no pending write process in the physical drive */
if (disk_ioctl
(fs
->drv
, CTRL_SYNC
, (void*)0) != RES_OK
)
res
= FR_DISK_ERR
;
}
return res
;
}
#endif
/*-----------------------------------------------------------------------*/
/* Get sector# from cluster# */
/*-----------------------------------------------------------------------*/
DWORD clust2sect
( /* !=0: Sector number, 0: Failed - invalid cluster# */
FATFS
*fs
, /* File system object */
DWORD clst
/* Cluster# to be converted */
)
{
clst
-= 2;
if (clst
>= (fs
->n_fatent
- 2)) return 0; /* Invalid cluster# */
return clst
* fs
->csize
+ fs
->database
;
}
/*-----------------------------------------------------------------------*/
/* FAT access - Read value of a FAT entry */
/*-----------------------------------------------------------------------*/
DWORD get_fat
( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
FATFS
*fs
, /* File system object */
DWORD clst
/* Cluster# to get the link information */
)
{
// UINT wc, bc;
BYTE
*p
;
if (clst
< 2 || clst
>= fs
->n_fatent
) /* Chack range */
return 1;
switch (fs
->fs_type
) {
#if 0
case FS_FAT12
:
bc
= (UINT
)clst
; bc
+= bc
/ 2;
if (move_window
(fs
, fs
->fatbase
+ (bc
/ SS
(fs
)))) break;
wc
= fs
->win
[bc
% SS
(fs
)]; bc
++;
if (move_window
(fs
, fs
->fatbase
+ (bc
/ SS
(fs
)))) break;
wc
|= fs
->win
[bc
% SS
(fs
)] << 8;
return (clst
& 1) ? (wc
>> 4) : (wc
& 0xFFF);
#endif
case FS_FAT16
:
if (move_window
(fs
, fs
->fatbase
+ (clst
/ (SS
(fs
) / 2)))) break;
p
= &fs
->win
[clst
* 2 % SS
(fs
)];
return LD_WORD
(p
);
case FS_FAT32
:
if (move_window
(fs
, fs
->fatbase
+ (clst
/ (SS
(fs
) / 4)))) break;
p
= &fs
->win
[clst
* 4 % SS
(fs
)];
return LD_DWORD
(p
) & 0x0FFFFFFF;
}
return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
}
/*-----------------------------------------------------------------------*/
/* FAT access - Change value of a FAT entry */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY
FRESULT put_fat
(
FATFS
*fs
, /* File system object */
DWORD clst
, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
DWORD val
/* New value to mark the cluster */
)
{
// UINT bc;
BYTE
*p
;
FRESULT res
;
if (clst
< 2 || clst
>= fs
->n_fatent
) { /* Check range */
res
= FR_INT_ERR
;
} else {
switch (fs
->fs_type
) {
#if 0
case FS_FAT12
:
bc
= clst
; bc
+= bc
/ 2;
res
= move_window
(fs
, fs
->fatbase
+ (bc
/ SS
(fs
)));
if (res
!= FR_OK
) break;
p
= &fs
->win
[bc
% SS
(fs
)];
*p
= (clst
& 1) ? ((*p
& 0x0F) | ((BYTE
)val
<< 4)) : (BYTE
)val
;
bc
++;
fs
->wflag
= 1;
res
= move_window
(fs
, fs
->fatbase
+ (bc
/ SS
(fs
)));
if (res
!= FR_OK
) break;
p
= &fs
->win
[bc
% SS
(fs
)];
*p
= (clst
& 1) ? (BYTE
)(val
>> 4) : ((*p
& 0xF0) | ((BYTE
)(val
>> 8) & 0x0F));
break;
#endif
case FS_FAT16
:
res
= move_window
(fs
, fs
->fatbase
+ (clst
/ (SS
(fs
) / 2)));
if (res
!= FR_OK
) break;
p
= &fs
->win
[clst
* 2 % SS
(fs
)];
ST_WORD
(p
, (WORD
)val
);
break;
case FS_FAT32
:
res
= move_window
(fs
, fs
->fatbase
+ (clst
/ (SS
(fs
) / 4)));
if (res
!= FR_OK
) break;
p
= &fs
->win
[clst
* 4 % SS
(fs
)];
val
|= LD_DWORD
(p
) & 0xF0000000;
ST_DWORD
(p
, val
);
break;
default :
res
= FR_INT_ERR
;
}
fs
->wflag
= 1;
}
return res
;
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* FAT handling - Remove a cluster chain */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY
static
FRESULT remove_chain
(
FATFS
*fs
, /* File system object */
DWORD clst
/* Cluster# to remove a chain from */
)
{
FRESULT res
;
DWORD nxt
;
#if _USE_ERASE
DWORD scl
= clst
, ecl
= clst
, resion
[2];
#endif
if (clst
< 2 || clst
>= fs
->n_fatent
) { /* Check range */
res
= FR_INT_ERR
;
} else {
res
= FR_OK
;
while (clst
< fs
->n_fatent
) { /* Not a last link? */
nxt
= get_fat
(fs
, clst
); /* Get cluster status */
if (nxt
== 0) break; /* Empty cluster? */
if (nxt
== 1) { res
= FR_INT_ERR
; break; } /* Internal error? */
if (nxt
== 0xFFFFFFFF) { res
= FR_DISK_ERR
; break; } /* Disk error? */
res
= put_fat
(fs
, clst
, 0); /* Mark the cluster "empty" */
if (res
!= FR_OK
) break;
if (fs
->free_clust
!= 0xFFFFFFFF) { /* Update FSInfo */
fs
->free_clust
++;
fs
->fsi_flag
= 1;
}
#if _USE_ERASE
if (ecl
+ 1 == nxt
) { /* Next cluster is contiguous */
ecl
= nxt
;
} else { /* End of contiguous clusters */
resion
[0] = clust2sect
(fs
, scl
); /* Start sector */
resion
[1] = clust2sect
(fs
, ecl
) + fs
->csize
- 1; /* End sector */
disk_ioctl
(fs
->drv
, CTRL_ERASE_SECTOR
, resion
); /* Erase the block */
scl
= ecl
= nxt
;
}
#endif
clst
= nxt
; /* Next cluster */
}
}
return res
;
}
#endif
/*-----------------------------------------------------------------------*/
/* FAT handling - Stretch or Create a cluster chain */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY
static
DWORD create_chain
( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
FATFS
*fs
, /* File system object */
DWORD clst
/* Cluster# to stretch. 0 means create a new chain. */
)
{
DWORD cs
, ncl
, scl
;
FRESULT res
;
if (clst
== 0) { /* Create a new chain */
scl
= fs
->last_clust
; /* Get suggested start point */
if (!scl
|| scl
>= fs
->n_fatent
) scl
= 1;
}
else { /* Stretch the current chain */
cs
= get_fat
(fs
, clst
); /* Check the cluster status */
if (cs
< 2) return 1; /* It is an invalid cluster */
if (cs
< fs
->n_fatent
) return cs
; /* It is already followed by next cluster */
scl
= clst
;
}
ncl
= scl
; /* Start cluster */
for (;;) {
ncl
++; /* Next cluster */
if (ncl
>= fs
->n_fatent
) { /* Wrap around */
ncl
= 2;
if (ncl
> scl
) return 0; /* No free cluster */
}
cs
= get_fat
(fs
, ncl
); /* Get the cluster status */
if (cs
== 0) break; /* Found a free cluster */
if (cs
== 0xFFFFFFFF || cs
== 1)/* An error occurred */
return cs
;
if (ncl
== scl
) return 0; /* No free cluster */
}
res
= put_fat
(fs
, ncl
, 0x0FFFFFFF); /* Mark the new cluster "last link" */
if (res
== FR_OK
&& clst
!= 0) {
res
= put_fat
(fs
, clst
, ncl
); /* Link it to the previous one if needed */
}
if (res
== FR_OK
) {
fs
->last_clust
= ncl
; /* Update FSINFO */
if (fs
->free_clust
!= 0xFFFFFFFF) {
fs
->free_clust
--;
fs
->fsi_flag
= 1;
}
} else {
ncl
= (res
== FR_DISK_ERR
) ? 0xFFFFFFFF : 1;
}
return ncl
; /* Return new cluster number or error code */
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* FAT handling - Convert offset into cluster with link map table */
/*-----------------------------------------------------------------------*/
#if _USE_FASTSEEK
static
DWORD clmt_clust
( /* <2:Error, >=2:Cluster number */
FIL
* fp
, /* Pointer to the file object */
DWORD ofs
/* File offset to be converted to cluster# */
)
{
DWORD cl
, ncl
, *tbl
;
tbl
= fp
->cltbl
+ 1; /* Top of CLMT */
cl
= ofs
/ SS
(fp
->fs
) / fp
->fs
->csize
; /* Cluster order from top of the file */
for (;;) {
ncl
= *tbl
++; /* Number of cluters in the fragment */
if (!ncl
) return 0; /* End of table? (error) */
if (cl
< ncl
) break; /* In this fragment? */
cl
-= ncl
; tbl
++; /* Next fragment */
}
return cl
+ *tbl
; /* Return the cluster number */
}
#endif /* _USE_FASTSEEK */
/*-----------------------------------------------------------------------*/
/* Directory handling - Set directory index */
/*-----------------------------------------------------------------------*/
static
FRESULT dir_sdi
(
DIR
*dj
, /* Pointer to directory object */
WORD idx
/* Directory index number */
)
{
DWORD clst
;
WORD ic
;
dj
->index
= idx
;
clst
= dj
->sclust
;
if (clst
== 1 || clst
>= dj
->fs
->n_fatent
) /* Check start cluster range */
return FR_INT_ERR
;
if (!clst
&& dj
->fs
->fs_type
== FS_FAT32
) /* Replace cluster# 0 with root cluster# if in FAT32 */
clst
= dj
->fs
->dirbase
;
if (clst
== 0) { /* Static table (root-dir in FAT12/16) */
dj
->clust
= 0; //clst;
if (idx
>= dj
->fs
->n_rootdir
) /* Index is out of range */
return FR_INT_ERR
;
dj
->sect
= dj
->fs
->dirbase
+ idx
/ (SS
(dj
->fs
) / SZ_DIR
); /* Sector# */
}
else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
ic
= SS
(dj
->fs
) / SZ_DIR
* dj
->fs
->csize
; /* Entries per cluster */
while (idx
>= ic
) { /* Follow cluster chain */
clst
= get_fat
(dj
->fs
, clst
); /* Get next cluster */
if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
; /* Disk error */
if (clst
< 2 || clst
>= dj
->fs
->n_fatent
) /* Reached to end of table or int error */
return FR_INT_ERR
;
idx
-= ic
;
}
dj
->clust
= clst
;
dj
->sect
= clust2sect
(dj
->fs
, clst
) + idx
/ (SS
(dj
->fs
) / SZ_DIR
); /* Sector# */
}
dj
->dir
= dj
->fs
->win
+ (idx
% (SS
(dj
->fs
) / SZ_DIR
)) * SZ_DIR
; /* Ptr to the entry in the sector */
return FR_OK
; /* Seek succeeded */
}
/*-----------------------------------------------------------------------*/
/* Directory handling - Move directory index next */
/*-----------------------------------------------------------------------*/
static
FRESULT dir_next
( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
DIR
*dj
, /* Pointer to directory object */
int stretch
/* 0: Do not stretch table, 1: Stretch table if needed */
)
{
DWORD clst
;
WORD i
;
i
= dj
->index
+ 1;
if (!i
|| !dj
->sect
) /* Report EOT when index has reached 65535 */
return FR_NO_FILE
;
if (!(i
% (SS
(dj
->fs
) / SZ_DIR
))) { /* Sector changed? */
dj
->sect
++; /* Next sector */
if (dj
->clust
== 0) { /* Static table */
if (i
>= dj
->fs
->n_rootdir
) /* Report EOT when end of table */
return FR_NO_FILE
;
}
else { /* Dynamic table */
if (((i
/ (SS
(dj
->fs
) / SZ_DIR
)) & (dj
->fs
->csize
- 1)) == 0) { /* Cluster changed? */
clst
= get_fat
(dj
->fs
, dj
->clust
); /* Get next cluster */
if (clst
<= 1) return FR_INT_ERR
;
if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
;
if (clst
>= dj
->fs
->n_fatent
) { /* When it reached end of dynamic table */
#if !_FS_READONLY
BYTE c
;
if (!stretch
) return FR_NO_FILE
; /* When do not stretch, report EOT */
clst
= create_chain
(dj
->fs
, dj
->clust
); /* Stretch cluster chain */
if (clst
== 0) return FR_DENIED
; /* No free cluster */
if (clst
== 1) return FR_INT_ERR
;
if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
;
/* Clean-up stretched table */
if (move_window
(dj
->fs
, 0)) return FR_DISK_ERR
; /* Flush active window */
memset(dj
->fs
->win
, 0, SS
(dj
->fs
)); /* Clear window buffer */
dj
->fs
->winsect
= clust2sect
(dj
->fs
, clst
); /* Cluster start sector */
for (c
= 0; c
< dj
->fs
->csize
; c
++) { /* Fill the new cluster with 0 */
dj
->fs
->wflag
= 1;
if (move_window
(dj
->fs
, 0)) return FR_DISK_ERR
;
dj
->fs
->winsect
++;
}
dj
->fs
->winsect
-= c
; /* Rewind window address */
#else
return FR_NO_FILE
; /* Report EOT */
#endif
}
dj
->clust
= clst
; /* Initialize data for new cluster */
dj
->sect
= clust2sect
(dj
->fs
, clst
);
}
}
}
dj
->index
= i
;
dj
->dir
= dj
->fs
->win
+ (i
% (SS
(dj
->fs
) / SZ_DIR
)) * SZ_DIR
;
return FR_OK
;
}
/*-----------------------------------------------------------------------*/
/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
/*-----------------------------------------------------------------------*/
#if _USE_LFN
static
const BYTE LfnOfs
[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
static
int cmp_lfn
( /* 1:Matched, 0:Not matched */
WCHAR
*lfnbuf
, /* Pointer to the LFN to be compared */
BYTE
*dir
/* Pointer to the directory entry containing a part of LFN */
)
{
UINT i
, s
;
WCHAR wc
, uc
;
i
= ((dir
[LDIR_Ord
] & ~LLE
) - 1) * 13; /* Get offset in the LFN buffer */
s
= 0; wc
= 1;
do {
uc
= LD_WORD
(dir
+LfnOfs
[s
]); /* Pick an LFN character from the entry */
if (wc
) { /* Last char has not been processed */
//wc = ff_wtoupper(uc); /* Convert it to upper case */
//if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
wc
= uc
; /* Convert it to upper case */
if (i
>= _MAX_LFN
|| wc
!= lfnbuf
[i
++]) /* Compare it */
return 0; /* Not matched */
} else {
if (uc
!= 0xFFFF) return 0; /* Check filler */
}
} while (++s
< 13); /* Repeat until all chars in the entry are checked */
if ((dir
[LDIR_Ord
] & LLE
) && wc
&& lfnbuf
[i
]) /* Last segment matched but different length */
return 0;
return 1; /* The part of LFN matched */
}
static
int pick_lfn
( /* 1:Succeeded, 0:Buffer overflow */
WCHAR
*lfnbuf
, /* Pointer to the Unicode-LFN buffer */
BYTE
*dir
/* Pointer to the directory entry */
)
{
UINT i
, s
;
WCHAR wc
, uc
;
i
= ((dir
[LDIR_Ord
] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
s
= 0; wc
= 1;
do {
uc
= LD_WORD
(dir
+LfnOfs
[s
]); /* Pick an LFN character from the entry */
if (wc
) { /* Last char has not been processed */
if (i
>= _MAX_LFN
) return 0; /* Buffer overflow? */
lfnbuf
[i
++] = wc
= uc
; /* Store it */
} else {
if (uc
!= 0xFFFF) return 0; /* Check filler */
}
} while (++s
< 13); /* Read all character in the entry */
if (dir
[LDIR_Ord
] & LLE
) { /* Put terminator if it is the last LFN part */
if (i
>= _MAX_LFN
) return 0; /* Buffer overflow? */
lfnbuf
[i
] = 0;
}
return 1;
}
#if !_FS_READONLY
static
void fit_lfn
(
const WCHAR
*lfnbuf
, /* Pointer to the LFN buffer */
BYTE
*dir
, /* Pointer to the directory entry */
BYTE ord
, /* LFN order (1-20) */
BYTE sum
/* SFN sum */
)
{
UINT i
, s
;
WCHAR wc
;
dir
[LDIR_Chksum
] = sum
; /* Set check sum */
dir
[LDIR_Attr
] = AM_LFN
; /* Set attribute. LFN entry */
dir
[LDIR_Type
] = 0;
ST_WORD
(dir
+LDIR_FstClusLO
, 0);
i
= (ord
- 1) * 13; /* Get offset in the LFN buffer */
s
= wc
= 0;
do {
if (wc
!= 0xFFFF) wc
= lfnbuf
[i
++]; /* Get an effective char */
ST_WORD
(dir
+LfnOfs
[s
], wc
); /* Put it */
if (!wc
) wc
= 0xFFFF; /* Padding chars following last char */
} while (++s
< 13);
if (wc
== 0xFFFF || !lfnbuf
[i
]) ord
|= LLE
; /* Bottom LFN part is the start of LFN sequence */
dir
[LDIR_Ord
] = ord
; /* Set the LFN order */
}
#endif
#endif
/*-----------------------------------------------------------------------*/
/* Create numbered name */
/*-----------------------------------------------------------------------*/
#if _USE_LFN
void gen_numname
(
BYTE
*dst
, /* Pointer to generated SFN */
const BYTE
*src
, /* Pointer to source SFN to be modified */
const WCHAR
*lfn
, /* Pointer to LFN */
WORD seq
/* Sequence number */
)
{
BYTE ns
[8], c
;
UINT i
, j
;
memcpy(dst
, src
, 11);
if (seq
> 5) { /* On many collisions, generate a hash number instead of sequential number */
do seq
= (seq
>> 1) + (seq
<< 15) + (WORD
)*lfn
++; while (*lfn
);
}
/* itoa (hexdecimal) */
i
= 7;
do {
c
= (seq
% 16) + '0';
if (c
> '9') c
+= 7;
ns
[i
--] = c
;
seq
/= 16;
} while (seq
);
ns
[i
] = '~';
/* Append the number */
for (j
= 0; j
< i
&& dst
[j
] != ' '; j
++) {
if (IsDBCS1
(dst
[j
])) {
if (j
== i
- 1) break;
j
++;
}
}
do {
dst
[j
++] = (i
< 8) ? ns
[i
++] : ' ';
} while (j
< 8);
}
#endif
/*-----------------------------------------------------------------------*/
/* Calculate sum of an SFN */
/*-----------------------------------------------------------------------*/
#if _USE_LFN
static
BYTE sum_sfn
(
const BYTE
*dir
/* Ptr to directory entry */
)
{
BYTE sum
= 0;
UINT n
= 11;
do sum
= (sum
>> 1) + (sum
<< 7) + *dir
++; while (--n
);
return sum
;
}
#endif
/*-----------------------------------------------------------------------*/
/* Directory handling - Find an object in the directory */
/*-----------------------------------------------------------------------*/
static
FRESULT dir_find
(
DIR
*dj
/* Pointer to the directory object linked to the file name */
)
{
FRESULT res
;
BYTE c
, *dir
;
#if _USE_LFN
BYTE a
, ord
, sum
;
#endif
res
= dir_sdi
(dj
, 0); /* Rewind directory object */
if (res
!= FR_OK
) return res
;
#if _USE_LFN
ord
= sum
= 0xFF;
#endif
do {
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
dir
= dj
->dir
; /* Ptr to the directory entry of current index */
c
= dir
[DIR_Name
];
if (c
== 0) { res
= FR_NO_FILE
; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a
= dir
[DIR_Attr
] & AM_MASK
;
if (c
== DDE
|| ((a
& AM_VOL
) && a
!= AM_LFN
)) { /* An entry without valid data */
ord
= 0xFF;
} else {
if (a
== AM_LFN
) { /* An LFN entry is found */
if (dj
->lfn
) {
if (c
& LLE
) { /* Is it start of LFN sequence? */
sum
= dir
[LDIR_Chksum
];
c
&= ~LLE
; ord
= c
; /* LFN start order */
dj
->lfn_idx
= dj
->index
;
}
/* Check validity of the LFN entry and compare it with given name */
ord
= (c
== ord
&& sum
== dir
[LDIR_Chksum
] && cmp_lfn
(dj
->lfn
, dir
)) ? ord
- 1 : 0xFF;
}
} else { /* An SFN entry is found */
if (!ord
&& sum
== sum_sfn
(dir
)) break; /* LFN matched? */
ord
= 0xFF; dj
->lfn_idx
= 0xFFFF; /* Reset LFN sequence */
if (!(dj
->fn
[NS
] & NS_LOSS
) && !memcmp(dir
, dj
->fn
, 11)) break; /* SFN matched? */
}
}
#else /* Non LFN configuration */
if (!(dir
[DIR_Attr
] & AM_VOL
) && !memcmp(dir
, dj
->fn
, 11)) /* Is it a valid entry? */
break;
#endif
res
= dir_next
(dj
, 0); /* Next entry */
} while (res
== FR_OK
);
return res
;
}
/*-----------------------------------------------------------------------*/
/* Read an object from the directory */
/*-----------------------------------------------------------------------*/
#if _FS_MINIMIZE <= 1
static
FRESULT dir_read
(
DIR
*dj
/* Pointer to the directory object that pointing the entry to be read */
)
{
FRESULT res
;
BYTE c
, *dir
;
#if _USE_LFN
BYTE a
, ord
= 0xFF, sum
= 0xFF;
#endif
res
= FR_NO_FILE
;
while (dj
->sect
) {
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
dir
= dj
->dir
; /* Ptr to the directory entry of current index */
c
= dir
[DIR_Name
];
if (c
== 0) { res
= FR_NO_FILE
; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a
= dir
[DIR_Attr
] & AM_MASK
;
if (c
== DDE
|| (!_FS_RPATH
&& c
== '.') || ((a
& AM_VOL
) && a
!= AM_LFN
)) { /* An entry without valid data */
ord
= 0xFF;
} else {
if (a
== AM_LFN
) { /* An LFN entry is found */
if (c
& LLE
) { /* Is it start of LFN sequence? */
sum
= dir
[LDIR_Chksum
];
c
&= ~LLE
; ord
= c
;
dj
->lfn_idx
= dj
->index
;
}
/* Check LFN validity and capture it */
ord
= (c
== ord
&& sum
== dir
[LDIR_Chksum
] && pick_lfn
(dj
->lfn
, dir
)) ? ord
- 1 : 0xFF;
} else { /* An SFN entry is found */
if (ord
|| sum
!= sum_sfn
(dir
)) /* Is there a valid LFN? */
dj
->lfn_idx
= 0xFFFF; /* It has no LFN. */
break;
}
}
#else /* Non LFN configuration */
if (c
!= DDE
&& (_FS_RPATH
|| c
!= '.') && !(dir
[DIR_Attr
] & AM_VOL
)) /* Is it a valid entry? */
break;
#endif
res
= dir_next
(dj
, 0); /* Next entry */
if (res
!= FR_OK
) break;
}
if (res
!= FR_OK
) dj
->sect
= 0;
return res
;
}
#endif
/*-----------------------------------------------------------------------*/
/* Register an object to the directory */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY
static
FRESULT dir_register
( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
DIR
*dj
/* Target directory with object name to be created */
)
{
FRESULT res
;
BYTE c
, *dir
;
#if _USE_LFN /* LFN configuration */
WORD n
, ne
, is
;
BYTE sn
[12], *fn
, sum
;
WCHAR
*lfn
;
fn
= dj
->fn
; lfn
= dj
->lfn
;
memcpy(sn
, fn
, 12);
if (_FS_RPATH
&& (sn
[NS
] & NS_DOT
)) /* Cannot create dot entry */
return FR_INVALID_NAME
;
if (sn
[NS
] & NS_LOSS
) { /* When LFN is out of 8.3 format, generate a numbered name */
fn
[NS
] = 0; dj
->lfn
= 0; /* Find only SFN */
for (n
= 1; n
< 100; n
++) {
gen_numname
(fn
, sn
, lfn
, n
); /* Generate a numbered name */
res
= dir_find
(dj
); /* Check if the name collides with existing SFN */
if (res
!= FR_OK
) break;
}
if (n
== 100) return FR_DENIED
; /* Abort if too many collisions */
if (res
!= FR_NO_FILE
) return res
; /* Abort if the result is other than 'not collided' */
fn
[NS
] = sn
[NS
]; dj
->lfn
= lfn
;
}
if (sn
[NS
] & NS_LFN
) { /* When LFN is to be created, reserve an SFN + LFN entries. */
for (ne
= 0; lfn
[ne
]; ne
++) ;
ne
= (ne
+ 25) / 13;
} else { /* Otherwise reserve only an SFN entry. */
ne
= 1;
}
/* Reserve contiguous entries */
res
= dir_sdi
(dj
, 0);
if (res
!= FR_OK
) return res
;
n
= is
= 0;
do {
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
c
= *dj
->dir
; /* Check the entry status */
if (c
== DDE
|| c
== 0) { /* Is it a blank entry? */
if (n
== 0) is
= dj
->index
; /* First index of the contiguous entry */
if (++n
== ne
) break; /* A contiguous entry that required count is found */
} else {
n
= 0; /* Not a blank entry. Restart to search */
}
res
= dir_next
(dj
, 1); /* Next entry with table stretch */
} while (res
== FR_OK
);
if (res
== FR_OK
&& ne
> 1) { /* Initialize LFN entry if needed */
res
= dir_sdi
(dj
, is
);
if (res
== FR_OK
) {
sum
= sum_sfn
(dj
->fn
); /* Sum of the SFN tied to the LFN */
ne
--;
do { /* Store LFN entries in bottom first */
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
fit_lfn
(dj
->lfn
, dj
->dir
, (BYTE
)ne
, sum
);
dj
->fs
->wflag
= 1;
res
= dir_next
(dj
, 0); /* Next entry */
} while (res
== FR_OK
&& --ne
);
}
}
#else /* Non LFN configuration */
res
= dir_sdi
(dj
, 0);
if (res
== FR_OK
) {
do { /* Find a blank entry for the SFN */
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
c
= *dj
->dir
;
if (c
== DDE
|| c
== 0) break; /* Is it a blank entry? */
res
= dir_next
(dj
, 1); /* Next entry with table stretch */
} while (res
== FR_OK
);
}
#endif
if (res
== FR_OK
) { /* Initialize the SFN entry */
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
== FR_OK
) {
dir
= dj
->dir
;
memset(dir
, 0, SZ_DIR
); /* Clean the entry */
memcpy(dir
, dj
->fn
, 11); /* Put SFN */
#if _USE_LFN
dir
[DIR_NTres
] = *(dj
->fn
+NS
) & (NS_BODY
| NS_EXT
); /* Put NT flag */
#endif
dj
->fs
->wflag
= 1;
}
}
return res
;
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Remove an object from the directory */
/*-----------------------------------------------------------------------*/
#if !_FS_READONLY && !_FS_MINIMIZE
static
FRESULT dir_remove
( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
DIR
*dj
/* Directory object pointing the entry to be removed */
)
{
FRESULT res
;
#if _USE_LFN /* LFN configuration */
WORD i
;
i
= dj
->index
; /* SFN index */
res
= dir_sdi
(dj
, (WORD
)((dj
->lfn_idx
== 0xFFFF) ? i
: dj
->lfn_idx
)); /* Goto the SFN or top of the LFN entries */
if (res
== FR_OK
) {
do {
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
!= FR_OK
) break;
*dj
->dir
= DDE
; /* Mark the entry "deleted" */
dj
->fs
->wflag
= 1;
if (dj
->index
>= i
) break; /* When reached SFN, all entries of the object has been deleted. */
res
= dir_next
(dj
, 0); /* Next entry */
} while (res
== FR_OK
);
if (res
== FR_NO_FILE
) res
= FR_INT_ERR
;
}
#else /* Non LFN configuration */
res
= dir_sdi
(dj
, dj
->index
);
if (res
== FR_OK
) {
res
= move_window
(dj
->fs
, dj
->sect
);
if (res
== FR_OK
) {
*dj
->dir
= DDE
; /* Mark the entry "deleted" */
dj
->fs
->wflag
= 1;
}
}
#endif
return res
;
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Pick a segment and create the object name in directory form */
/*-----------------------------------------------------------------------*/
static
FRESULT create_name
(
DIR
*dj
, /* Pointer to the directory object */
const TCHAR
**path
/* Pointer to pointer to the segment in the path string */
)
{
#ifdef _EXCVT
// static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
#endif
#if _USE_LFN /* LFN configuration */
BYTE b
, cf
;
WCHAR w
, *lfn
;
UINT i
, ni
, si
, di
;
const TCHAR
*p
;
/* Create LFN in Unicode */
for (p
= *path
; *p
== '/' || *p
== '\\'; p
++) ; /* Strip duplicated separator */
lfn
= dj
->lfn
;
si
= di
= 0;
for (;;) {
w
= p
[si
++]; /* Get a character */
if (w
< ' ' || w
== '/' || w
== '\\') break; /* Break on end of segment */
if (di
>= _MAX_LFN
) /* Reject too long name */
return FR_INVALID_NAME
;
#if !_LFN_UNICODE
w
&= 0xFF;
if (IsDBCS1
(w
)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
b
= (BYTE
)p
[si
++]; /* Get 2nd byte */
if (!IsDBCS2
(b
))
return FR_INVALID_NAME
; /* Reject invalid sequence */
w
= (w
<< 8) + b
; /* Create a DBC */
}
w
= ff_convert
(w
, 1); /* Convert ANSI/OEM to Unicode */
if (!w
) return FR_INVALID_NAME
; /* Reject invalid code */
#endif
if (w
< 0x80 && strchr("\"*:<>\?|\x7F", w
)) /* Reject illegal chars for LFN */
return FR_INVALID_NAME
;
lfn
[di
++] = w
; /* Store the Unicode char */
}
*path
= &p
[si
]; /* Return pointer to the next segment */
cf
= (w
< ' ') ? NS_LAST
: 0; /* Set last segment flag if end of path */
#if _FS_RPATH
if ((di
== 1 && lfn
[di
-1] == '.') || /* Is this a dot entry? */
(di
== 2 && lfn
[di
-1] == '.' && lfn
[di
-2] == '.')) {
lfn
[di
] = 0;
for (i
= 0; i
< 11; i
++)
dj
->fn
[i
] = (i
< di
) ? '.' : ' ';
dj
->fn
[i
] = cf
| NS_DOT
; /* This is a dot entry */
return FR_OK
;
}
#endif
while (di
) { /* Strip trailing spaces and dots */
w
= lfn
[di
-1];
if (w
!= ' ' && w
!= '.') break;
di
--;
}
if (!di
) return FR_INVALID_NAME
; /* Reject nul string */
lfn
[di
] = 0; /* LFN is created */
/* Create SFN in directory form */
memset(dj
->fn
, ' ', 11);
for (si
= 0; lfn
[si
] == ' ' || lfn
[si
] == '.'; si
++) ; /* Strip leading spaces and dots */
if (si
) cf
|= NS_LOSS
| NS_LFN
;
while (di
&& lfn
[di
- 1] != '.') di
--; /* Find extension (di<=si: no extension) */
b
= i
= 0; ni
= 8;
for (;;) {
w
= lfn
[si
++]; /* Get an LFN char */
if (!w
) break; /* Break on end of the LFN */
if (w
== ' ' || (w
== '.' && si
!= di
)) { /* Remove spaces and dots */
cf
|= NS_LOSS
| NS_LFN
; continue;
}
if (i
>= ni
|| si
== di
) { /* Extension or end of SFN */
if (ni
== 11) { /* Long extension */
cf
|= NS_LOSS
| NS_LFN
; break;
}
if (si
!= di
) cf
|= NS_LOSS
| NS_LFN
; /* Out of 8.3 format */
if (si
> di
) break; /* No extension */
si
= di
; i
= 8; ni
= 11; /* Enter extension section */
b
<<= 2; continue;
}
if (w
>= 0x80) { /* Non ASCII char */
#ifdef _EXCVT
w
= ff_convert
(w
, 0); /* Unicode -> OEM code */
//if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
#else
w
= ff_convert
(ff_wtoupper
(w
), 0); /* Upper converted Unicode -> OEM code */
#endif
cf
|= NS_LFN
; /* Force create LFN entry */
}
#if 0
if (_DF1S
&& w
>= 0x100) { /* Double byte char (always false on SBCS cfg) */
if (i
>= ni
- 1) {
cf
|= NS_LOSS
| NS_LFN
; i
= ni
; continue;
}
dj
->fn
[i
++] = (BYTE
)(w
>> 8);
} else
#endif
{ /* Single byte char */
if (!w
|| strchr("+,;=[]", w
)) { /* Replace illegal chars for SFN */
w
= '_'; cf
|= NS_LOSS
| NS_LFN
;/* Lossy conversion */
} else {
if (IsUpper
(w
)) { /* ASCII large capital */
b
|= 2;
} else {
if (IsLower
(w
)) { /* ASCII small capital */
b
|= 1; w
-= 0x20;
}
}
}
}
dj
->fn
[i
++] = (BYTE
)w
;
}
if (dj
->fn
[0] == DDE
) dj
->fn
[0] = NDDE
; /* If the first char collides with deleted mark, replace it with 0x05 */
if (ni
== 8) b
<<= 2;
if ((b
& 0x0C) == 0x0C || (b
& 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
cf
|= NS_LFN
;
if (!(cf
& NS_LFN
)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
if ((b
& 0x03) == 0x01) cf
|= NS_EXT
; /* NT flag (Extension has only small capital) */
if ((b
& 0x0C) == 0x04) cf
|= NS_BODY
; /* NT flag (Filename has only small capital) */
}
dj
->fn
[NS
] = cf
; /* SFN is created */
return FR_OK
;
#else /* Non-LFN configuration */
BYTE b
, c
, d
, *sfn
;
UINT ni
, si
, i
;
const char *p
;
/* Create file name in directory form */
for (p
= *path
; *p
== '/' || *p
== '\\'; p
++) ; /* Strip duplicated separator */
sfn
= dj
->fn
;
memset(sfn
, ' ', 11);
si
= i
= b
= 0; ni
= 8;
#if _FS_RPATH
if (p
[si
] == '.') { /* Is this a dot entry? */
for (;;) {
c
= (BYTE
)p
[si
++];
if (c
!= '.' || si
>= 3) break;
sfn
[i
++] = c
;
}
if (c
!= '/' && c
!= '\\' && c
> ' ') return FR_INVALID_NAME
;
*path
= &p
[si
]; /* Return pointer to the next segment */
sfn
[NS
] = (c
<= ' ') ? NS_LAST
| NS_DOT
: NS_DOT
; /* Set last segment flag if end of path */
return FR_OK
;
}
#endif
for (;;) {
c
= (BYTE
)p
[si
++];
if (c
<= ' ' || c
== '/' || c
== '\\') break; /* Break on end of segment */
if (c
== '.' || i
>= ni
) {
if (ni
!= 8 || c
!= '.') return FR_INVALID_NAME
;
i
= 8; ni
= 11;
b
<<= 2; continue;
}
if (c
>= 0x80) { /* Extended char? */
b
|= 3; /* Eliminate NT flag */
#ifdef _EXCVT
c
= excvt
[c
-0x80]; /* Upper conversion (SBCS) */
#else
#if !_DF1S /* ASCII only cfg */
return FR_INVALID_NAME
;
#endif
#endif
}
if (IsDBCS1
(c
)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
d
= (BYTE
)p
[si
++]; /* Get 2nd byte */
if (!IsDBCS2
(d
) || i
>= ni
- 1) /* Reject invalid DBC */
return FR_INVALID_NAME
;
sfn
[i
++] = c
;
sfn
[i
++] = d
;
} else { /* Single byte code */
if (strchr("\"*+,:;<=>\?[]|\x7F", c
)) /* Reject illegal chrs for SFN */
return FR_INVALID_NAME
;
if (IsUpper
(c
)) { /* ASCII large capital? */
b
|= 2;
} else {
if (IsLower
(c
)) { /* ASCII small capital? */
b
|= 1; c
-= 0x20;
}
}
sfn
[i
++] = c
;
}
}
*path
= &p
[si
]; /* Return pointer to the next segment */
c
= (c
<= ' ') ? NS_LAST
: 0; /* Set last segment flag if end of path */
if (!i
) return FR_INVALID_NAME
; /* Reject nul string */
if (sfn
[0] == DDE
) sfn
[0] = NDDE
; /* When first char collides with DDE, replace it with 0x05 */
if (ni
== 8) b
<<= 2;
if ((b
& 0x03) == 0x01) c
|= NS_EXT
; /* NT flag (Name extension has only small capital) */
if ((b
& 0x0C) == 0x04) c
|= NS_BODY
; /* NT flag (Name body has only small capital) */
sfn
[NS
] = c
; /* Store NT flag, File name is created */
return FR_OK
;
#endif
}
/*-----------------------------------------------------------------------*/
/* Get file information from directory entry */
/*-----------------------------------------------------------------------*/
#if _FS_MINIMIZE <= 1
static
void get_fileinfo
( /* No return code */
DIR
*dj
, /* Pointer to the directory object */
FILINFO
*fno
/* Pointer to the file information to be filled */
)
{
UINT i
;
BYTE nt
, *dir
;
TCHAR
*p
, c
;
p
= fno
->fname
;
if (dj
->sect
) {
dir
= dj
->dir
;
nt
= dir
[DIR_NTres
]; /* NT flag */
for (i
= 0; i
< 8; i
++) { /* Copy name body */
c
= dir
[i
];
if (c
== ' ') break;
if (c
== NDDE
) c
= (TCHAR
)DDE
;
if (_USE_LFN
&& (nt
& NS_BODY
) && IsUpper
(c
)) c
+= 0x20;
#if _LFN_UNICODE
if (IsDBCS1
(c
) && i
< 7 && IsDBCS2
(dir
[i
+1]))
c
= (c
<< 8) | dir
[++i
];
c
= ff_convert
(c
, 1);
if (!c
) c
= '?';
#endif
*p
++ = c
;
}
if (dir
[8] != ' ') { /* Copy name extension */
*p
++ = '.';
for (i
= 8; i
< 11; i
++) {
c
= dir
[i
];
if (c
== ' ') break;
if (_USE_LFN
&& (nt
& NS_EXT
) && IsUpper
(c
)) c
+= 0x20;
#if _LFN_UNICODE
if (IsDBCS1
(c
) && i
< 10 && IsDBCS2
(dir
[i
+1]))
c
= (c
<< 8) | dir
[++i
];
c
= ff_convert
(c
, 1);
if (!c
) c
= '?';
#endif
*p
++ = c
;
}
}
fno
->fattrib
= dir
[DIR_Attr
]; /* Attribute */
fno
->fsize
= LD_DWORD
(dir
+DIR_FileSize
); /* Size */
fno
->fdate
= LD_WORD
(dir
+DIR_WrtDate
); /* Date */
fno
->ftime
= LD_WORD
(dir
+DIR_WrtTime
); /* Time */
}
*p
= 0; /* Terminate SFN str by a \0 */
#if _USE_LFN
/* if (fno->lfname && fno->lfsize)*/ {
TCHAR
*tp
= fno
->lfname
;
WCHAR w
, *lfn
;
i
= 0;
if (dj
->sect
&& dj
->lfn_idx
!= 0xFFFF) {/* Get LFN if available */
lfn
= dj
->lfn
;
while ((w
= *lfn
++) != 0) { /* Get an LFN char */
#if !_LFN_UNICODE
w
= ff_convert
(w
, 0); /* Unicode -> OEM conversion */
if (!w
) { i
= 0; break; } /* Could not convert, no LFN */
if (_DF1S
&& w
>= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
tp
[i
++] = (TCHAR
)(w
>> 8);
#endif
if (i
>= 64 /*fno->lfsize*/ - 1) { i
= 0; break; } /* Buffer overflow, no LFN */
tp
[i
++] = (TCHAR
)w
;
}
}
tp
[i
] = 0; /* Terminate the LFN str by a \0 */
}
#endif
}
#endif /* _FS_MINIMIZE <= 1 */
/*-----------------------------------------------------------------------*/
/* Follow a file path */
/*-----------------------------------------------------------------------*/
static
FRESULT follow_path
( /* FR_OK(0): successful, !=0: error code */
DIR
*dj
, /* Directory object to return last directory and found object */
const TCHAR
*path
/* Full-path string to find a file or directory */
)
{
FRESULT res
;
BYTE
*dir
, ns
;
#if _FS_RPATH
if (*path
== '/' || *path
== '\\') { /* There is a heading separator */
path
++; dj
->sclust
= 0; /* Strip it and start from the root dir */
} else { /* No heading separator */
dj
->sclust
= drv_calls.
curr_dir; //dj->fs->cdir; /* Start from the current dir */
}
#else
if (*path
== '/' || *path
== '\\') /* Strip heading separator if exist */
path
++;
dj
->sclust
= 0; /* Start from the root dir */
#endif
if ((UINT
)*path
< ' ') { /* Nul path means the start directory itself */
res
= dir_sdi
(dj
, 0);
dj
->dir
= 0;
} else { /* Follow path */
for (;;) {
res
= create_name
(dj
, &path
); /* Get a segment */
if (res
!= FR_OK
) break;
res
= dir_find
(dj
); /* Find it */
ns
= *(dj
->fn
+NS
);
if (res
!= FR_OK
) { /* Failed to find the object */
if (res
!= FR_NO_FILE
) break; /* Abort if any hard error occured */
/* Object not found */
if (_FS_RPATH
&& (ns
& NS_DOT
)) { /* If dot entry is not exit */
dj
->sclust
= 0; dj
->dir
= 0; /* It is the root dir */
res
= FR_OK
;
if (!(ns
& NS_LAST
)) continue;
} else { /* Could not find the object */
if (!(ns
& NS_LAST
)) res
= FR_NO_PATH
;
}
break;
}
if (ns
& NS_LAST
) break; /* Last segment match. Function completed. */
dir
= dj
->dir
; /* There is next segment. Follow the sub directory */
if (!(dir
[DIR_Attr
] & AM_DIR
)) { /* Cannot follow because it is a file */
res
= FR_NO_PATH
; break;
}
dj
->sclust
= LD_CLUST
(dir
);
}
}
return res
;
}
/*-----------------------------------------------------------------------*/
/* Load boot record and check if it is an FAT boot record */
/*-----------------------------------------------------------------------*/
static
BYTE check_fs
( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
FATFS
*fs
, /* File system object */
DWORD sect
/* Sector# (lba) to check if it is an FAT boot record or not */
)
{ SET_DIO_PAR
(fs
->drv
, fs
->win
, sect
,1);
if (drv_calls.
read_to_buf() != RES_OK
) /* Load boot record */
return 3;
if (LD_WORD
(&fs
->win
[BS_55AA
]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
return 2;
if ((LD_DWORD
(&fs
->win
[BS_FilSysType
]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
return 0;
if ((LD_DWORD
(&fs
->win
[BS_FilSysType32
]) & 0xFFFFFF) == 0x544146)
return 0;
return 1;
}
/*-----------------------------------------------------------------------*/
/* Check if the file system object is valid or not */
/*-----------------------------------------------------------------------*/
static
FRESULT chk_mounted
( /* FR_OK(0): successful, !=0: any error occurred */
//const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
FATFS
**rfs
, /* Pointer to pointer to the found file system object */
BYTE chk_wp
/* !=0: Check media write protection for write access */
)
{
BYTE fmt
, b
, *tbl
;
//UINT vol;
DSTATUS stat
;
DWORD bsect
, fasize
, tsect
, sysect
, nclst
, szbfat
;
WORD nrsv
;
//const TCHAR *p = *path;
FATFS
*fs
;
*rfs
= fs
= drv_calls.
curr_fatfs; /* Return pointer to the corresponding file system object */
if (!fs
) return FR_NOT_ENABLED
; /* Is the file system object available? */
ENTER_FF
(fs
); /* Lock file system */
if (fs
->fs_type
) { /* If the logical drive has been mounted */
stat
= disk_status
(fs
->drv
);
if (!(stat
& STA_NOINIT
)) { /* and the physical drive is kept initialized (has not been changed), */
#if !_FS_READONLY
if (chk_wp
&& (stat
& STA_PROTECT
)) /* Check write protection if needed */
return FR_WRITE_PROTECTED
;
#endif
return FR_OK
; /* The file system object is valid */
}
}
fs
->fs_type
=0;
/* The logical drive must be mounted. */
/* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */
//fs->fs_type = 0; /* Clear the file system object */
//Dimkam fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
stat
= disk_initialize
(fs
->drv
,fs
->win
); /* Initialize low level disk I/O layer */
if (stat
& STA_NOINIT
) /* Check if the initialization succeeded */
return FR_NOT_READY
; /* Failed to initialize due to no media or hard error */
#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
if (disk_ioctl
(fs
->drv
, GET_SECTOR_SIZE
, &fs
->ssize
) != RES_OK
)
return FR_DISK_ERR
;
#endif
#if !_FS_READONLY
if (chk_wp
&& (stat
& STA_PROTECT
)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED
;
#endif
/* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */
fmt
= check_fs
(fs
, bsect
= 0); /* Check sector 0 if it is a VBR */
if (fmt
== 1) { /* Not an FAT-VBR, the disk may be partitioned */
/* Check the partition listed in top of the partition table */
//DimkaM tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */
tbl
= &fs
->win
[MBR_Table
+ (fs
->part
) * SZ_PTE
];/* Partition table */
if (tbl
[4]) { /* Is the partition existing? */
bsect
= LD_DWORD
(&tbl
[8]); /* Partition offset in LBA */
fmt
= check_fs
(fs
, bsect
); /* Check the partition */
}
}else if((!fmt
) && fs
->part
){
return FR_NO_MBR
;
}
if (fmt
== 3) return FR_DISK_ERR
;
if (fmt
) return FR_NO_FILESYSTEM
; /* No FAT volume is found */
/* Following code initializes the file system object */
if (LD_WORD
(fs
->win
+BPB_BytsPerSec
) != SS
(fs
)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
return FR_NO_FILESYSTEM
;
fasize
= LD_WORD
(fs
->win
+BPB_FATSz16
); /* Number of sectors per FAT */
if (!fasize
) fasize
= LD_DWORD
(fs
->win
+BPB_FATSz32
);
fs
->fsize
= fasize
;
fs
->n_fats
= b
= fs
->win
[BPB_NumFATs
]; /* Number of FAT copies */
if (b
!= 1 && b
!= 2) return FR_NO_FILESYSTEM
; /* (Must be 1 or 2) */
fasize
*= b
; /* Number of sectors for FAT area */
fs
->csize
= b
= fs
->win
[BPB_SecPerClus
]; /* Number of sectors per cluster */
if (!b
|| (b
& (b
- 1))) return FR_NO_FILESYSTEM
; /* (Must be power of 2) */
fs
->n_rootdir
= LD_WORD
(fs
->win
+BPB_RootEntCnt
); /* Number of root directory entries */
if (fs
->n_rootdir
% (SS
(fs
) / SZ_DIR
)) return FR_NO_FILESYSTEM
; /* (BPB_RootEntCnt must be sector aligned) */
tsect
= LD_WORD
(fs
->win
+BPB_TotSec16
); /* Number of sectors on the volume */
if (!tsect
) tsect
= LD_DWORD
(fs
->win
+BPB_TotSec32
);
nrsv
= LD_WORD
(fs
->win
+BPB_RsvdSecCnt
); /* Number of reserved sectors */
if (!nrsv
) return FR_NO_FILESYSTEM
; /* (BPB_RsvdSecCnt must not be 0) */
/* Determine the FAT sub type */
sysect
= nrsv
+ fasize
+ fs
->n_rootdir
/ (SS
(fs
) / SZ_DIR
); /* RSV+FAT+DIR */
if (tsect
< sysect
) return FR_NO_FILESYSTEM
; /* (Invalid volume size) */
nclst
= (tsect
- sysect
) / fs
->csize
; /* Number of clusters */
if (!nclst
) return FR_NO_FILESYSTEM
; /* (Invalid volume size) */
//fmt = FS_FAT12;
//if (nclst >= MIN_FAT16) fmt = FS_FAT16;
fmt
= FS_FAT16
;
if (nclst
>= MIN_FAT32
) fmt
= FS_FAT32
;
/* Boundaries and Limits */
fs
->n_fatent
= nclst
+ 2; /* Number of FAT entries */
fs
->database
= bsect
+ sysect
; /* Data start sector */
fs
->fatbase
= bsect
+ nrsv
; /* FAT start sector */
if (fmt
== FS_FAT32
) {
if (fs
->n_rootdir
) return FR_NO_FILESYSTEM
; /* (BPB_RootEntCnt must be 0) */
fs
->dirbase
= LD_DWORD
(fs
->win
+BPB_RootClus
); /* Root directory start cluster */
szbfat
= fs
->n_fatent
* 4; /* (Required FAT size) */
} else {
if (!fs
->n_rootdir
) return FR_NO_FILESYSTEM
; /* (BPB_RootEntCnt must not be 0) */
fs
->dirbase
= fs
->fatbase
+ fasize
; /* Root directory start sector */
szbfat
= (fmt
== FS_FAT16
) ? /* (Required FAT size) */
fs
->n_fatent
* 2 : fs
->n_fatent
* 3 / 2 + (fs
->n_fatent
& 1);
}
if (fs
->fsize
< (szbfat
+ (SS
(fs
) - 1)) / SS
(fs
)) /* (BPB_FATSz must not be less than required) */
return FR_NO_FILESYSTEM
;
#if !_FS_READONLY
/* Initialize cluster allocation information */
fs
->free_clust
= 0xFFFFFFFF;
fs
->last_clust
= 0;
/* Get fsinfo if available */
if (fmt
== FS_FAT32
) {
fs
->fsi_flag
= 0;
fs
->fsi_sector
= bsect
+ LD_WORD
(fs
->win
+BPB_FSInfo
);
SET_DIO_PAR
(fs
->drv
, fs
->win
, fs
->fsi_sector
,1);
if (drv_calls.
read_to_buf() == RES_OK
&&
LD_WORD
(fs
->win
+BS_55AA
) == 0xAA55 &&
LD_DWORD
(fs
->win
+FSI_LeadSig
) == 0x41615252 &&
LD_DWORD
(fs
->win
+FSI_StrucSig
) == 0x61417272) {
fs
->last_clust
= LD_DWORD
(fs
->win
+FSI_Nxt_Free
);
fs
->free_clust
= LD_DWORD
(fs
->win
+FSI_Free_Count
);
}
}
#endif
fs
->fs_type
= fmt
; /* FAT sub-type */
fs
->id
= ++Fsid
; /* File system mount ID */
fs
->winsect
= 0; /* Invalidate sector cache */
fs
->wflag
= 0;
#if _FS_RPATH
drv_calls.
curr_dir = 0; //fs->cdir = 0; /* Current directory (root dir) */
#endif
#if _FS_SHARE /* Clear file lock semaphores */
clear_lock
(fs
);
#endif
return FR_OK
;
}
/*-----------------------------------------------------------------------*/
/* Check if the file/dir object is valid or not */
/*-----------------------------------------------------------------------*/
static
FRESULT validate
( /* FR_OK(0): The object is valid, !=0: Invalid */
FATFS
*fs
, /* Pointer to the file system object */
WORD id
/* Member id of the target object to be checked */
)
{
if (!fs
|| !fs
->fs_type
|| fs
->id
!= id
)
return FR_INVALID_OBJECT
;
ENTER_FF
(fs
); /* Lock file system */
if (disk_status
(fs
->drv
) & STA_NOINIT
){
fs
->fs_type
=0;
return FR_NOT_READY
;
}
return FR_OK
;
}
/*--------------------------------------------------------------------------
Public Functions
--------------------------------------------------------------------------*/
//const TCHAR nullstring[]="";
static DIR djo
, djn
;
/*-----------------------------------------------------------------------*/
/* Mount/Unmount a Logical Drive */
/*-----------------------------------------------------------------------*/
FRESULT f_mount
(
void
//BYTE vol, /* Logical drive number to be mounted/unmounted */
//FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
)
{
#if 1==0
static FATFS
*rfs
;
if (vol
>= _VOLUMES
) /* Check if the drive number is valid */
return FR_INVALID_DRIVE
;
rfs
= FatFs
[vol
]; /* Get current fs object */
if (rfs
) {
#if _FS_SHARE
clear_lock
(rfs
);
#endif
#if _FS_REENTRANT /* Discard sync object of the current volume */
if (!ff_del_syncobj
(rfs
->sobj
)) return FR_INT_ERR
;
#endif
rfs
->fs_type
= 0; /* Clear old fs object */
}
if (fs
) {
fs
->fs_type
= 0; /* Clear new fs object */
#if _FS_REENTRANT /* Create sync object for the new volume */
if (!ff_cre_syncobj
(vol
, &fs
->sobj
)) return FR_INT_ERR
;
#endif
}
FatFs
[vol
] = fs
; /* Register new fs object */
return FR_OK
;
#else
//static TCHAR *path;
//path = (TCHAR *)nullstring;
drv_calls.
curr_fatfs->fs_type
= 0;
return chk_mounted
(&djo.
fs, 0);
#endif
}
/*-----------------------------------------------------------------------*/
/* Open or Create a File */
/*-----------------------------------------------------------------------*/
FRESULT f_open
(
FIL
*fp
, /* Pointer to the blank file object */
const TCHAR
*path
, /* Pointer to the file name */
BYTE mode
/* Access mode and file open mode flags */
)
{
static FRESULT res
;
//DIR dj;
BYTE
*dir
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
fp
->fs
= 0; /* Clear file object */
#if !_FS_READONLY
mode
&= FA_READ
| FA_WRITE
| FA_CREATE_ALWAYS
| FA_OPEN_ALWAYS
| FA_CREATE_NEW
;
res
= chk_mounted
(&djo.
fs, (BYTE
)(mode
& ~FA_READ
));
#else
mode
&= FA_READ
;
res
= chk_mounted
(&pathbuf_ptr
, &djo.
fs, 0);
#endif
INIT_BUF
(djo
);
if (res
== FR_OK
)
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
dir
= djo.
dir;
#if !_FS_READONLY /* R/W configuration */
if (res
== FR_OK
) {
if (!dir
) /* Current dir itself */
res
= FR_INVALID_NAME
;
#if _FS_SHARE
else
res
= chk_lock
(&djo
, (mode
& ~FA_READ
) ? 1 : 0);
#endif
}
/* Create or Open a file */
if (mode
& (FA_CREATE_ALWAYS
| FA_OPEN_ALWAYS
| FA_CREATE_NEW
)) {
static DWORD dw
, cl
;
if (res
!= FR_OK
) { /* No file, create new */
if (res
== FR_NO_FILE
) /* There is no file to open, create a new entry */
#if _FS_SHARE
res
= enq_lock
(djo.
fs) ? dir_register
(&djo
) : FR_TOO_MANY_OPEN_FILES
;
#else
res
= dir_register
(&djo
);
#endif
mode
|= FA_CREATE_ALWAYS
; /* File is created */
dir
= djo.
dir; /* New entry */
}
else { /* Any object is already existing */
if (dir
[DIR_Attr
] & (AM_RDO
| AM_DIR
)) { /* Cannot overwrite it (R/O or DIR) */
res
= FR_DENIED
;
} else {
if (mode
& FA_CREATE_NEW
) /* Cannot create as new file */
res
= FR_EXIST
;
}
}
if (res
== FR_OK
&& (mode
& FA_CREATE_ALWAYS
)) { /* Truncate it if overwrite mode */
get_fattime
(&dw
); /* Created time */
ST_DWORD
(dir
+DIR_CrtTime
, dw
);
dir
[DIR_Attr
] = 0; /* Reset attribute */
ST_DWORD
(dir
+DIR_FileSize
, 0); /* size = 0 */
cl
= LD_CLUST
(dir
); /* Get start cluster */
ST_CLUST
(dir
, 0); /* cluster = 0 */
djo.
fs->wflag
= 1;
if (cl
) { /* Remove the cluster chain if exist */
dw
= djo.
fs->winsect
;
res
= remove_chain
(djo.
fs, cl
);
if (res
== FR_OK
) {
djo.
fs->last_clust
= cl
- 1; /* Reuse the cluster hole */
res
= move_window
(djo.
fs, dw
);
}
}
}
}
else { /* 6769 Open an existing file */
if (res
== FR_OK
) { /* Follow succeeded */
if (dir
[DIR_Attr
] & AM_DIR
) { /* It is a directory */
res
= FR_NO_FILE
;
}
// else {
// if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
// res = FR_DENIED;
// }
}
}
if (res
== FR_OK
) {
if (mode
& FA_CREATE_ALWAYS
) /* Set file change flag if created or overwritten */
mode
|= FA__WRITTEN
;
fp
->dir_sect
= djo.
fs->winsect
; /* Pointer to the directory entry */
fp
->dir_ptr
= dir
;
#if _FS_SHARE
fp
->lockid
= inc_lock
(&djo
, (mode
& ~FA_READ
) ? 1 : 0);
if (!fp
->lockid
) res
= FR_INT_ERR
;
#endif
}
#else /* R/O configuration */
if (res
== FR_OK
) { /* Follow succeeded */
if (!dir
) { /* Current dir itself */
res
= FR_INVALID_NAME
;
} else {
if (dir
[DIR_Attr
] & AM_DIR
) /* It is a directory */
res
= FR_NO_FILE
;
}
}
#endif
FREE_BUF
();
if (res
== FR_OK
) {
fp
->flag
= mode
; /* File access mode */
fp
->sclust
= LD_CLUST
(dir
); /* File start cluster */
fp
->fsize
= LD_DWORD
(dir
+DIR_FileSize
); /* File size */
fp
->fptr
= 0; /* File pointer */
fp
->dsect
= 0;
#if _USE_FASTSEEK
fp
->cltbl
= 0; /* Normal seek mode */
#endif
fp
->fs
= djo.
fs; fp
->id
= djo.
fs->id
; /* Validate file object */
}
LEAVE_FF
(djo.
fs, res
);
}
/*-----------------------------------------------------------------------*/
/* Read File */
/*-----------------------------------------------------------------------*/
FRESULT f_read
(
FIL
*fp
, /* Pointer to the file object */
void *buff
, /* Pointer to data buffer */
UINT btr
, /* Number of bytes to read */
UINT
*br
/* Pointer to number of bytes read */
)
{
FRESULT res
;
static DWORD clst
;
static DWORD sect
;
static DWORD remain
;
UINT rcnt
;
static UINT cc
;
BYTE csect
;
static BYTE
* rbuff
;
rbuff
= buff
;
*br
= 0; /* Initialize byte counter */
res
= validate
(fp
->fs
, fp
->id
); /* Check validity */
if (res
!= FR_OK
) LEAVE_FF
(fp
->fs
, res
);
if (fp
->flag
& FA__ERROR
) /* Aborted file? */
LEAVE_FF
(fp
->fs
, FR_INT_ERR
);
if (!(fp
->flag
& FA_READ
)) /* Check access mode */
LEAVE_FF
(fp
->fs
, FR_DENIED
);
remain
= fp
->fsize
- fp
->fptr
;
if (btr
> remain
) btr
= (UINT
)remain
; /* Truncate btr by remaining bytes */
for ( ; btr
; /* Repeat until all data read */
rbuff
+= rcnt
, fp
->fptr
+= rcnt
, *br
+= rcnt
, btr
-= rcnt
) {
if ((fp
->fptr
% SS
(fp
->fs
)) == 0) { /* On the sector boundary? */
csect
= (BYTE
)(fp
->fptr
/ SS
(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
if (!csect
) { /* On the cluster boundary? */
if (fp
->fptr
== 0) { /* On the top of the file? */
clst
= fp
->sclust
; /* Follow from the origin */
} else { /* Middle or end of the file */
#if _USE_FASTSEEK
if (fp
->cltbl
)
clst
= clmt_clust
(fp
, fp
->fptr
); /* Get cluster# from the CLMT */
else
#endif
clst
= get_fat
(fp
->fs
, fp
->clust
); /* Follow cluster chain on the FAT */
}
if (clst
< 2) ABORT
(fp
->fs
, FR_INT_ERR
);
if (clst
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->clust
= clst
; /* Update current cluster */
}
sect
= clust2sect
(fp
->fs
, fp
->clust
); /* Get current sector */
if (!sect
) ABORT
(fp
->fs
, FR_INT_ERR
);
sect
+= csect
;
cc
= btr
/ SS
(fp
->fs
); /* When remaining bytes >= sector size, */
if (cc
) { /* Read maximum contiguous sectors directly */
if (csect
+ cc
> fp
->fs
->csize
) /* Clip at cluster boundary */
cc
= fp
->fs
->csize
- csect
;
SET_DIO_PAR
(fp
->fs
->drv
, rbuff
, sect
, (BYTE
)cc
);
if (drv_calls.
read_to_uspace() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
#if _FS_TINY
if (fp
->fs
->wflag
&& fp
->fs
->winsect
- sect
< cc
)
drv_calls.
memcpy_buf2usp(rbuff
+ ((fp
->fs
->winsect
- sect
) * SS
(fp
->fs
)), fp
->fs
->win
, SS
(fp
->fs
));
#else
if ((fp
->flag
& FA__DIRTY
) && fp
->dsect
- sect
< cc
)
drv_calls.
memcpy_buf2usp(rbuff
+ ((fp
->dsect
- sect
) * SS
(fp
->fs
)), fp
->buf
, SS
(fp
->fs
));
#endif
#endif
rcnt
= SS
(fp
->fs
) * cc
; /* Number of bytes transferred */
continue;
}
#if !_FS_TINY
if (fp
->dsect
!= sect
) { /* Load data sector if not in cache */
if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1);
if (drv_calls.
write_from_buf() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->flag
&= ~FA__DIRTY
;
}
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, sect
, 1);
if (drv_calls.
read_to_buf() != RES_OK
) /* Fill sector cache */
ABORT
(fp
->fs
, FR_DISK_ERR
);
}
#endif
fp
->dsect
= sect
;
}
rcnt
= SS
(fp
->fs
) - (fp
->fptr
% SS
(fp
->fs
)); /* Get partial sector data from sector buffer */
if (rcnt
> btr
) rcnt
= btr
;
#if _FS_TINY
if (move_window
(fp
->fs
, fp
->dsect
)) /* Move sector window */
ABORT
(fp
->fs
, FR_DISK_ERR
);
drv_calls.
memcpy_buf2usp(rbuff
, &fp
->fs
->win
[fp
->fptr
% SS
(fp
->fs
)], rcnt
); /* Pick partial sector */
#else
drv_calls.
memcpy_buf2usp(rbuff
, &fp
->buf
[fp
->fptr
% SS
(fp
->fs
)], rcnt
); /* Pick partial sector */
#endif
}
LEAVE_FF
(fp
->fs
, FR_OK
);
}
#if !_FS_READONLY
/*-----------------------------------------------------------------------*/
/* Write File */
/*-----------------------------------------------------------------------*/
FRESULT f_write
(
FIL
*fp
, /* Pointer to the file object */
const void *buff
, /* Pointer to the data to be written */
UINT btw
, /* Number of bytes to write */
UINT
*bw
/* Pointer to number of bytes written */
)
{
FRESULT res
;
DWORD clst
;
static DWORD sect
;
static UINT wcnt
, cc
;
const BYTE
*wbuff
= buff
;
BYTE csect
;
*bw
= 0; /* Initialize byte counter */
res
= validate
(fp
->fs
, fp
->id
); /* Check validity */
if (res
!= FR_OK
) LEAVE_FF
(fp
->fs
, res
);
if (fp
->flag
& FA__ERROR
) /* Aborted file? */
LEAVE_FF
(fp
->fs
, FR_INT_ERR
);
if (!(fp
->flag
& FA_WRITE
)) /* Check access mode */
LEAVE_FF
(fp
->fs
, FR_DENIED
);
if ((DWORD
)(fp
->fsize
+ btw
) < fp
->fsize
) btw
= 0; /* File size cannot reach 4GB */
for ( ; btw
; /* Repeat until all data written */
wbuff
+= wcnt
, fp
->fptr
+= wcnt
, *bw
+= wcnt
, btw
-= wcnt
) {
if ((fp
->fptr
% SS
(fp
->fs
)) == 0) { /* On the sector boundary? */
csect
= (BYTE
)(fp
->fptr
/ SS
(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
if (!csect
) { /* On the cluster boundary? */
if (fp
->fptr
== 0) { /* On the top of the file? */
clst
= fp
->sclust
; /* Follow from the origin */
if (clst
== 0) /* When no cluster is allocated, */
fp
->sclust
= clst
= create_chain
(fp
->fs
, 0); /* Create a new cluster chain */
} else { /* Middle or end of the file */
#if _USE_FASTSEEK
if (fp
->cltbl
)
clst
= clmt_clust
(fp
, fp
->fptr
); /* Get cluster# from the CLMT */
else
#endif
clst
= create_chain
(fp
->fs
, fp
->clust
); /* Follow or stretch cluster chain on the FAT */
}
if (clst
== 0) break; /* Could not allocate a new cluster (disk full) */
if (clst
== 1) ABORT
(fp
->fs
, FR_INT_ERR
);
if (clst
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->clust
= clst
; /* Update current cluster */
}
#if _FS_TINY
if (fp
->fs
->winsect
== fp
->dsect
&& move_window
(fp
->fs
, 0)) /* Write-back sector cache */
ABORT
(fp
->fs
, FR_DISK_ERR
);
#else
if (fp
->flag
& FA__DIRTY
) { /* Write-back sector cache */
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1);
if (drv_calls.
write_from_buf() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->flag
&= ~FA__DIRTY
;
}
#endif
sect
= clust2sect
(fp
->fs
, fp
->clust
); /* Get current sector */
if (!sect
) ABORT
(fp
->fs
, FR_INT_ERR
);
sect
+= csect
;
cc
= btw
/ SS
(fp
->fs
); /* When remaining bytes >= sector size, */
if (cc
) { /* Write maximum contiguous sectors directly */
if (csect
+ cc
> fp
->fs
->csize
) /* Clip at cluster boundary */
cc
= fp
->fs
->csize
- csect
;
SET_DIO_PAR
(fp
->fs
->drv
, wbuff
, sect
, (BYTE
)cc
);
if (drv_calls.
write_from_uspace() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
#if _FS_TINY
if (fp
->fs
->winsect
- sect
< cc
) { /* Refill sector cache if it gets invalidated by the direct write */
drv_calls.
memcpy_usp2buf(fp
->fs
->win
, wbuff
+ ((fp
->fs
->winsect
- sect
) * SS
(fp
->fs
)), SS
(fp
->fs
));
fp
->fs
->wflag
= 0;
}
#else
if (fp
->dsect
- sect
< cc
) { /* Refill sector cache if it gets invalidated by the direct write */
drv_calls.
memcpy_usp2buf(fp
->buf
, wbuff
+ ((fp
->dsect
- sect
) * SS
(fp
->fs
)), SS
(fp
->fs
));
fp
->flag
&= ~FA__DIRTY
;
}
#endif
wcnt
= SS
(fp
->fs
) * cc
; /* Number of bytes transferred */
continue;
}
#if _FS_TINY
if (fp
->fptr
>= fp
->fsize
) { /* Avoid silly cache filling at growing edge */
if (move_window
(fp
->fs
, 0)) ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->fs
->winsect
= sect
;
}
#else
if (fp
->dsect
!= sect
) { /* Fill sector cache with file data */
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, sect
, 1);
if (fp
->fptr
< fp
->fsize
&&
drv_calls.
read_to_buf() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
}
#endif
fp
->dsect
= sect
;
}
wcnt
= SS
(fp
->fs
) - (fp
->fptr
% SS
(fp
->fs
));/* Put partial sector into file I/O buffer */
if (wcnt
> btw
) wcnt
= btw
;
#if _FS_TINY
if (move_window
(fp
->fs
, fp
->dsect
)) /* Move sector window */
ABORT
(fp
->fs
, FR_DISK_ERR
);
drv_calls.
memcpy_usp2buf(&fp
->fs
->win
[fp
->fptr
% SS
(fp
->fs
)], wbuff
, wcnt
); /* Fit partial sector */
fp
->fs
->wflag
= 1;
#else
drv_calls.
memcpy_usp2buf(&fp
->buf
[fp
->fptr
% SS
(fp
->fs
)], wbuff
, wcnt
); /* Fit partial sector */
fp
->flag
|= FA__DIRTY
;
#endif
}
if (fp
->fptr
> fp
->fsize
) fp
->fsize
= fp
->fptr
; /* Update file size if needed */
fp
->flag
|= FA__WRITTEN
; /* Set file change flag */
LEAVE_FF
(fp
->fs
, FR_OK
);
}
/*-----------------------------------------------------------------------*/
/* Synchronize the File Object */
/*-----------------------------------------------------------------------*/
FRESULT f_sync
(
FIL
*fp
/* Pointer to the file object */
)
{
FRESULT res
;
DWORD tim
;
BYTE
*dir
;
res
= validate
(fp
->fs
, fp
->id
); /* Check validity of the object */
if (res
== FR_OK
) {
if (fp
->flag
& FA__WRITTEN
) { /* Has the file been written? */
#if !_FS_TINY /* Write-back dirty buffer */
if (fp
->flag
& FA__DIRTY
) {
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1);
if (drv_calls.
write_from_buf() != RES_OK
)
LEAVE_FF
(fp
->fs
, FR_DISK_ERR
);
fp
->flag
&= ~FA__DIRTY
;
}
#endif
/* Update the directory entry */
res
= move_window
(fp
->fs
, fp
->dir_sect
);
if (res
== FR_OK
) {
dir
= fp
->dir_ptr
;
dir
[DIR_Attr
] |= AM_ARC
; /* Set archive bit */
ST_DWORD
(dir
+DIR_FileSize
, fp
->fsize
); /* Update file size */
ST_CLUST
(dir
, fp
->sclust
); /* Update start cluster */
get_fattime
(&tim
); /* Update updated time */
ST_DWORD
(dir
+DIR_WrtTime
, tim
);
fp
->flag
&= ~FA__WRITTEN
;
fp
->fs
->wflag
= 1;
res
= sync
(fp
->fs
);
}
}
}
LEAVE_FF
(fp
->fs
, res
);
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Close File */
/*-----------------------------------------------------------------------*/
FRESULT f_close
(
FIL
*fp
/* Pointer to the file object to be closed */
)
{
static FRESULT res
;
#if _FS_READONLY
FATFS
*fs
= fp
->fs
;
res
= validate
(fs
, fp
->id
);
if (res
== FR_OK
) fp
->fs
= 0; /* Discard file object */
LEAVE_FF
(fs
, res
);
#else
res
= f_sync
(fp
); /* Flush cached data */
#if _FS_SHARE
if (res
== FR_OK
) { /* Decrement open counter */
#if _FS_REENTRANT
res
= validate
(fp
->fs
, fp
->id
);
if (res
== FR_OK
) {
res
= dec_lock
(fp
->lockid
);
unlock_fs
(fp
->fs
, FR_OK
);
}
#else
res
= dec_lock
(fp
->lockid
);
#endif
}
#endif
if (res
== FR_OK
) fp
->fs
= 0; /* Discard file object */
return res
;
#endif
}
/*-----------------------------------------------------------------------*/
/* Current Drive/Directory Handlings */
/*-----------------------------------------------------------------------*/
#if _FS_RPATH >= 1
FRESULT f_chdrive
(
BYTE drv
/* Drive number */
)
{
//if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
//CurrVol = drv;
return drv
;
}
FRESULT f_chdir
(
const TCHAR
*path
/* Pointer to the directory path */
)
{
FRESULT res
;
//DIR dj;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 0);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the path */
FREE_BUF
();
if (res
== FR_OK
) { /* Follow completed */
if (!djo.
dir) {
drv_calls.
curr_dir = djo.
sclust; //dj.fs->cdir = dj.sclust; /* Start directory itself */
} else {
if (djo.
dir[DIR_Attr
] & AM_DIR
) /* Reached to the directory */
drv_calls.
curr_dir = LD_CLUST
(djo.
dir); //dj.fs->cdir = LD_CLUST(dj.dir);
else
res
= FR_NO_PATH
; /* Reached but a file */
}
}
if (res
== FR_NO_FILE
) res
= FR_NO_PATH
;
}
LEAVE_FF
(djo.
fs, res
);
}
#if _FS_RPATH >= 2
FRESULT f_getcwd
(
TCHAR
*path
, /* Pointer to the directory path */
UINT sz_path
/* Size of path */
)
{
FRESULT res
;
//DIR dj;
UINT i
, n
;
static DWORD ccl
;
TCHAR
*tp
;
static FILINFO fno
;
DEF_NAMEBUF
;
*pathbuf
= 0;
res
= chk_mounted
(&djo.
fs, 0); /* Get current volume */
if (res
== FR_OK
) {
INIT_BUF
(djo
);
i
= sz_path
; /* Bottom of buffer (dir stack base) */
djo.
sclust = drv_calls.
curr_dir; //dj.fs->cdir; /* Start to follow upper dir from current dir */
while ((ccl
= djo.
sclust) != 0) { /* Repeat while current dir is a sub-dir */
res
= dir_sdi
(&djo
, 1); /* Get parent dir */
if (res
!= FR_OK
) break;
res
= dir_read
(&djo
);
if (res
!= FR_OK
) break;
djo.
sclust = LD_CLUST
(djo.
dir); /* Goto parent dir */
res
= dir_sdi
(&djo
, 0);
if (res
!= FR_OK
) break;
do { /* Find the entry links to the child dir */
res
= dir_read
(&djo
);
if (res
!= FR_OK
) break;
if (ccl
== LD_CLUST
(djo.
dir)) break; /* Found the entry */
res
= dir_next
(&djo
, 0);
} while (res
== FR_OK
);
if (res
== FR_NO_FILE
) res
= FR_INT_ERR
;/* It cannot be 'not found'. */
if (res
!= FR_OK
) break;
/*
#if _USE_LFN
fno.lfname = pathbuf;
fno.lfsize = i;
#endif
*/
get_fileinfo
(&djo
, &fno
); /* Get the dir name and push it to the buffer */
tp
= fno.
fname;
#if _USE_LFN
if (fno.
lfname[0]) tp
= fno.
lfname;
#endif
for (n
= 0; tp
[n
]; n
++) ;
if (i
< n
+ 3) {
res
= FR_NOT_ENOUGH_CORE
;
break;
}
pathbuf
[--i
] = '/';
while (n
) pathbuf
[--i
] = tp
[--n
];
}
tp
= pathbuf
;
if (res
== FR_OK
) {
//*tp++ = '0' + CurrVol; /* Put drive number */
//*tp++ = ':';
if (i
!= sz_path
) { /* non Root-dir */
do /* Add stacked path str */
*tp
++ = pathbuf
[i
++];
while (i
< sz_path
);
tp
--;
}
}
*tp
= 0;
FREE_BUF
();
}
drv_calls.
strcpy_lib2usp(path
, pathbuf
);
LEAVE_FF
(djo.
fs, res
);
}
#endif /* _FS_RPATH >= 2 */
#endif /* _FS_RPATH >= 1 */
#if _FS_MINIMIZE <= 2
/*-----------------------------------------------------------------------*/
/* Seek File R/W Pointer */
/*-----------------------------------------------------------------------*/
FRESULT f_lseek
(
FIL
*fp
, /* Pointer to the file object */
DWORD ofs
/* File pointer from top of file */
)
{
FRESULT res
;
res
= validate
(fp
->fs
, fp
->id
); /* Check validity of the object */
if (res
!= FR_OK
) LEAVE_FF
(fp
->fs
, res
);
if (fp
->flag
& FA__ERROR
) /* Check abort flag */
LEAVE_FF
(fp
->fs
, FR_INT_ERR
);
#if _USE_FASTSEEK
if (fp
->cltbl
) { /* Fast seek */
DWORD cl
, pcl
, ncl
, tcl
, dsc
, tlen
, ulen
, *tbl
;
if (ofs
== CREATE_LINKMAP
) { /* Create CLMT */
tbl
= fp
->cltbl
;
tlen
= *tbl
++; ulen
= 2; /* Given table size and required table size */
cl
= fp
->sclust
; /* Top of the chain */
if (cl
) {
do {
/* Get a fragment */
tcl
= cl
; ncl
= 0; ulen
+= 2; /* Top, length and used items */
do {
pcl
= cl
; ncl
++;
cl
= get_fat
(fp
->fs
, cl
);
if (cl
<= 1) ABORT
(fp
->fs
, FR_INT_ERR
);
if (cl
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
} while (cl
== pcl
+ 1);
if (ulen
<= tlen
) { /* Store the length and top of the fragment */
*tbl
++ = ncl
; *tbl
++ = tcl
;
}
} while (cl
< fp
->fs
->n_fatent
); /* Repeat until end of chain */
}
*fp
->cltbl
= ulen
; /* Number of items used */
if (ulen
<= tlen
)
*tbl
= 0; /* Terminate table */
else
res
= FR_NOT_ENOUGH_CORE
; /* Given table size is smaller than required */
} else { /* Fast seek */
if (ofs
> fp
->fsize
) /* Clip offset at the file size */
ofs
= fp
->fsize
;
fp
->fptr
= ofs
; /* Set file pointer */
if (ofs
) {
fp
->clust
= clmt_clust
(fp
, ofs
- 1);
dsc
= clust2sect
(fp
->fs
, fp
->clust
);
if (!dsc
) ABORT
(fp
->fs
, FR_INT_ERR
);
dsc
+= (ofs
- 1) / SS
(fp
->fs
) & (fp
->fs
->csize
- 1);
if (fp
->fptr
% SS
(fp
->fs
) && dsc
!= fp
->dsect
) { /* Refill sector cache if needed */
#if !_FS_TINY
#if !_FS_READONLY
if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
if (disk_write
(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->flag
&= ~FA__DIRTY
;
}
#endif
if (disk_read
(fp
->fs
->drv
, fp
->buf
, dsc
, 1) != RES_OK
) /* Load current sector */
ABORT
(fp
->fs
, FR_DISK_ERR
);
#endif
fp
->dsect
= dsc
;
}
}
}
} else
#endif
/* Normal Seek */
{
static DWORD clst
;
static DWORD bcs
;
static DWORD nsect
;
static DWORD ifptr
;
if (ofs
> fp
->fsize
/* In read-only mode, clip offset with the file size */
#if !_FS_READONLY
&& !(fp
->flag
& FA_WRITE
)
#endif
) ofs
= fp
->fsize
;
ifptr
= fp
->fptr
;
fp
->fptr
= nsect
= 0;
if (ofs
) {
bcs
= (DWORD
)fp
->fs
->csize
* SS
(fp
->fs
); /* Cluster size (byte) */
if (ifptr
> 0 &&
(ofs
- 1) / bcs
>= (ifptr
- 1) / bcs
) { /* When seek to same or following cluster, */
fp
->fptr
= (ifptr
- 1) & ~
(bcs
- 1); /* start from the current cluster */
ofs
-= fp
->fptr
;
clst
= fp
->clust
;
} else { /* When seek to back cluster, */
clst
= fp
->sclust
; /* start from the first cluster */
#if !_FS_READONLY
if (clst
== 0) { /* If no cluster chain, create a new chain */
clst
= create_chain
(fp
->fs
, 0);
if (clst
== 1) ABORT
(fp
->fs
, FR_INT_ERR
);
if (clst
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->sclust
= clst
;
}
#endif
fp
->clust
= clst
;
}
if (clst
!= 0) {
while (ofs
> bcs
) { /* Cluster following loop */
#if !_FS_READONLY
if (fp
->flag
& FA_WRITE
) { /* Check if in write mode or not */
clst
= create_chain
(fp
->fs
, clst
); /* Force stretch if in write mode */
if (clst
== 0) { /* When disk gets full, clip file size */
ofs
= bcs
; break;
}
} else
#endif
clst
= get_fat
(fp
->fs
, clst
); /* Follow cluster chain if not in write mode */
if (clst
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
if (clst
<= 1 || clst
>= fp
->fs
->n_fatent
) ABORT
(fp
->fs
, FR_INT_ERR
);
fp
->clust
= clst
;
fp
->fptr
+= bcs
;
ofs
-= bcs
;
}
fp
->fptr
+= ofs
;
if (ofs
% SS
(fp
->fs
)) {
nsect
= clust2sect
(fp
->fs
, clst
); /* Current sector */
if (!nsect
) ABORT
(fp
->fs
, FR_INT_ERR
);
nsect
+= ofs
/ SS
(fp
->fs
);
}
}
}
if (fp
->fptr
% SS
(fp
->fs
) && nsect
!= fp
->dsect
) { /* Fill sector cache if needed */
#if !_FS_TINY
#if !_FS_READONLY
if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1);
if (drv_calls.
write_from_buf() != RES_OK
)
ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->flag
&= ~FA__DIRTY
;
}
#endif
SET_DIO_PAR
(fp
->fs
->drv
, fp
->buf
, nsect
, 1);
if (drv_calls.
read_to_buf() != RES_OK
) /* Fill sector cache */
ABORT
(fp
->fs
, FR_DISK_ERR
);
#endif
fp
->dsect
= nsect
;
}
#if !_FS_READONLY
if (fp
->fptr
> fp
->fsize
) { /* Set file change flag if the file size is extended */
fp
->fsize
= fp
->fptr
;
fp
->flag
|= FA__WRITTEN
;
}
#endif
}
LEAVE_FF
(fp
->fs
, res
);
}
#if _FS_MINIMIZE <= 1
/*-----------------------------------------------------------------------*/
/* Create a Directroy Object */
/*-----------------------------------------------------------------------*/
FRESULT f_opendir
(
DIR
*dj
/* Pointer to directory object to create */
,const TCHAR
*path
/* Pointer to the directory path */
)
{
FRESULT res
;
DEF_NAMEBUF
;
if(path
== 0){
pathbuf
[0] = 0; //(TCHAR *)nullstring;
}else{
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
}
res
= chk_mounted
(&dj
->fs
, 0); //(&path, &dj->fs, 0);
if (res
== FR_OK
) {
INIT_BUF
(*dj
);
res
= follow_path
(dj
, pathbuf
); /* Follow the path to the directory */
FREE_BUF
();
if (res
== FR_OK
) { /* Follow completed */
if (dj
->dir
) { /* It is not the root dir */
if (dj
->dir
[DIR_Attr
] & AM_DIR
) { /* The object is a directory */
dj
->sclust
= LD_CLUST
(dj
->dir
);
} else { /* The object is not a directory */
res
= FR_NO_PATH
;
}
}
if (res
== FR_OK
) {
dj
->id
= dj
->fs
->id
;
res
= dir_sdi
(dj
, 0); /* Rewind dir */
}
}
if (res
== FR_NO_FILE
) res
= FR_NO_PATH
;
}
LEAVE_FF
(dj
->fs
, res
);
}
/*-----------------------------------------------------------------------*/
/* Read Directory Entry in Sequense */
/*-----------------------------------------------------------------------*/
FILINFO fno_rddir
;
FRESULT f_readdir
(
DIR
*dj
, /* Pointer to the open directory object */
FILINFO
*fno
/* Pointer to file information to return */
)
{
FRESULT res
;
DEF_NAMEBUF
;
res
= validate
(dj
->fs
, dj
->id
); /* Check validity of the object */
if (res
== FR_OK
) {
if (!fno
) {
res
= dir_sdi
(dj
, 0); /* Rewind the directory object */
} else {
INIT_BUF
(*dj
);
res
= dir_read
(dj
); /* Read an directory item */
if (res
== FR_NO_FILE
) { /* Reached end of dir */
dj
->sect
= 0;
//res = FR_OK;
}
if (res
== FR_OK
) { /* A valid entry is found */
fno_rddir.
fname[0] = 0x00;
get_fileinfo
(dj
, &fno_rddir
); /* Get the object information */
res
= dir_next
(dj
, 0); /* Increment index for next */
if (res
== FR_NO_FILE
) {
dj
->sect
= 0;
res
= FR_OK
;
}
}
FREE_BUF
();
}
}
drv_calls.
memcpy_lib2usp(fno
,&fno_rddir
,sizeof(FILINFO
));
LEAVE_FF
(dj
->fs
, res
);
}
#if _FS_MINIMIZE == 0
/*-----------------------------------------------------------------------*/
/* Get File Status */
/*-----------------------------------------------------------------------*/
FRESULT f_stat
(
const TCHAR
*path
, /* Pointer to the file path */
FILINFO
*fno
/* Pointer to file information to return */
)
{
static FRESULT res
;
//DIR dj;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 0);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
if (res
== FR_OK
) { /* Follow completed */
if (djo.
dir) /* Found an object */
get_fileinfo
(&djo
, &fno_rddir
);
else /* It is root dir */
res
= FR_INVALID_NAME
;
}
FREE_BUF
();
}
drv_calls.
memcpy_lib2usp(fno
,&fno_rddir
,sizeof(FILINFO
));
LEAVE_FF
(djo.
fs, res
);
}
#if !_FS_READONLY
#if 0
/*-----------------------------------------------------------------------*/
/* Get Number of Free Clusters */
/*-----------------------------------------------------------------------*/
FRESULT f_getfree
(
//const TCHAR *path, /* Pointer to the logical drive number (root dir) */
DWORD
*nclst
, /* Pointer to the variable to return number of free clusters */
FATFS
**fatfs
/* Pointer to pointer to corresponding file system object to return */
)
{
static FRESULT res
;
static DWORD n
;
static DWORD clst
;
static DWORD sect
;
DWORD stat
;
UINT i
;
BYTE fat
;
static BYTE
*p
;
/* Get drive number */
res
= chk_mounted
(fatfs
, 0);
if (res
== FR_OK
) {
/* If free_clust is valid, return it without full cluster scan */
if ((*fatfs
)->free_clust
<= (*fatfs
)->n_fatent
- 2) {
*nclst
= (*fatfs
)->free_clust
;
} else {
/* Get number of free clusters */
fat
= (*fatfs
)->fs_type
;
n
= 0;
if (fat
== FS_FAT12
) {
clst
= 2;
do {
stat
= get_fat
(*fatfs
, clst
);
if (stat
== 0xFFFFFFFF) { res
= FR_DISK_ERR
; break; }
if (stat
== 1) { res
= FR_INT_ERR
; break; }
if (stat
== 0) n
++;
} while (++clst
< (*fatfs
)->n_fatent
);
} else {
clst
= (*fatfs
)->n_fatent
;
sect
= (*fatfs
)->fatbase
;
i
= 0; p
= 0;
do {
if (!i
) {
res
= move_window
(*fatfs
, sect
++);
if (res
!= FR_OK
) break;
p
= (*fatfs
)->win
;
i
= SS
(*fatfs
);
}
if (fat
== FS_FAT16
) {
if (LD_WORD
(p
) == 0) n
++;
p
+= 2; i
-= 2;
} else {
if ((LD_DWORD
(p
) & 0x0FFFFFFF) == 0) n
++;
p
+= 4; i
-= 4;
}
} while (--clst
);
}
(*fatfs
)->free_clust
= n
;
if (fat
== FS_FAT32
) (*fatfs
)->fsi_flag
= 1;
*nclst
= n
;
}
}
LEAVE_FF
(*fatfs
, res
);
}
/*-----------------------------------------------------------------------*/
/* Truncate File */
/*-----------------------------------------------------------------------*/
FRESULT f_truncate
(
FIL
*fp
/* Pointer to the file object */
)
{
FRESULT res
;
static DWORD ncl
;
res
= validate
(fp
->fs
, fp
->id
); /* Check validity of the object */
if (res
== FR_OK
) {
if (fp
->flag
& FA__ERROR
) { /* Check abort flag */
res
= FR_INT_ERR
;
} else {
if (!(fp
->flag
& FA_WRITE
)) /* Check access mode */
res
= FR_DENIED
;
}
}
if (res
== FR_OK
) {
if (fp
->fsize
> fp
->fptr
) {
fp
->fsize
= fp
->fptr
; /* Set file size to current R/W point */
fp
->flag
|= FA__WRITTEN
;
if (fp
->fptr
== 0) { /* When set file size to zero, remove entire cluster chain */
res
= remove_chain
(fp
->fs
, fp
->sclust
);
fp
->sclust
= 0;
} else { /* When truncate a part of the file, remove remaining clusters */
ncl
= get_fat
(fp
->fs
, fp
->clust
);
res
= FR_OK
;
if (ncl
== 0xFFFFFFFF) res
= FR_DISK_ERR
;
if (ncl
== 1) res
= FR_INT_ERR
;
if (res
== FR_OK
&& ncl
< fp
->fs
->n_fatent
) {
res
= put_fat
(fp
->fs
, fp
->clust
, 0x0FFFFFFF);
if (res
== FR_OK
) res
= remove_chain
(fp
->fs
, ncl
);
}
}
}
if (res
!= FR_OK
) fp
->flag
|= FA__ERROR
;
}
LEAVE_FF
(fp
->fs
, res
);
}
#endif
/*-----------------------------------------------------------------------*/
/* Delete a File or Directory */
/*-----------------------------------------------------------------------*/
FRESULT f_unlink
(
const TCHAR
*path
/* Pointer to the file or directory path */
)
{
static FRESULT res
;
//DIR dj, sdj;
static BYTE
*dir
;
static DWORD dclst
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
if (_FS_RPATH
&& res
== FR_OK
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
; /* Cannot remove dot entry */
#if _FS_SHARE
if (res
== FR_OK
) res
= chk_lock
(&djo
, 2); /* Cannot remove open file */
#endif
if (res
== FR_OK
) { /* The object is accessible */
dir
= djo.
dir;
if (!dir
) {
res
= FR_INVALID_NAME
; /* Cannot remove the start directory */
} else {
if (dir
[DIR_Attr
] & AM_RDO
)
res
= FR_DENIED
; /* Cannot remove R/O object */
}
dclst
= LD_CLUST
(dir
);
if (res
== FR_OK
&& (dir
[DIR_Attr
] & AM_DIR
)) { /* Is it a sub-dir? */
if (dclst
< 2) {
res
= FR_INT_ERR
;
} else {
memcpy(&djn
, &djo
, sizeof(DIR
)); /* Check if the sub-dir is empty or not */
djn.
sclust = dclst
;
res
= dir_sdi
(&djn
, 2); /* Exclude dot entries */
if (res
== FR_OK
) {
res
= dir_read
(&djn
);
if (res
== FR_OK
/* Not empty dir */
#if _FS_RPATH
|| dclst
== drv_calls.
curr_dir /*sdj.fs->cdir Current dir */
#endif
) res
= FR_DENIED
;
if (res
== FR_NO_FILE
) res
= FR_OK
; /* Empty */
}
}
}
if (res
== FR_OK
) {
res
= dir_remove
(&djo
); /* Remove the directory entry */
if (res
== FR_OK
) {
if (dclst
) /* Remove the cluster chain if exist */
res
= remove_chain
(djo.
fs, dclst
);
if (res
== FR_OK
) res
= sync
(djo.
fs);
}
}
}
FREE_BUF
();
}
LEAVE_FF
(djo.
fs, res
);
}
/*-----------------------------------------------------------------------*/
/* Create a Directory */
/*-----------------------------------------------------------------------*/
FRESULT f_mkdir
(
const TCHAR
*path
/* Pointer to the directory path */
)
{
static FRESULT res
;
//DIR dj;
BYTE
*dir
;
BYTE n
;
static DWORD dsc
;
static DWORD dcl
;
static DWORD pcl
;
static DWORD tim
;
DEF_NAMEBUF
;
get_fattime
(&tim
);
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
if (res
== FR_OK
) res
= FR_EXIST
; /* Any object with same name is already existing */
if (_FS_RPATH
&& res
== FR_NO_FILE
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
;
if (res
== FR_NO_FILE
) { /* Can create a new directory */
dcl
= create_chain
(djo.
fs, 0); /* Allocate a cluster for the new directory table */
res
= FR_OK
;
if (dcl
== 0) res
= FR_DENIED
; /* No space to allocate a new cluster */
if (dcl
== 1) res
= FR_INT_ERR
;
if (dcl
== 0xFFFFFFFF) res
= FR_DISK_ERR
;
if (res
== FR_OK
) /* Flush FAT */
res
= move_window
(djo.
fs, 0);
if (res
== FR_OK
) { /* Initialize the new directory table */
dsc
= clust2sect
(djo.
fs, dcl
);
dir
= djo.
fs->win
;
memset(dir
, 0, SS
(djo.
fs));
memset(dir
+DIR_Name
, ' ', 8+3); /* Create "." entry */
dir
[DIR_Name
] = '.';
dir
[DIR_Attr
] = AM_DIR
;
ST_DWORD
(dir
+DIR_WrtTime
, tim
);
ST_CLUST
(dir
, dcl
);
memcpy(dir
+SZ_DIR
, dir
, SZ_DIR
); /* Create ".." entry */
dir
[33] = '.'; pcl
= djo.
sclust;
if (djo.
fs->fs_type
== FS_FAT32
&& pcl
== djo.
fs->dirbase
)
pcl
= 0;
ST_CLUST
(dir
+SZ_DIR
, pcl
);
for (n
= djo.
fs->csize
; n
; n
--) { /* Write dot entries and clear following sectors */
djo.
fs->winsect
= dsc
++;
djo.
fs->wflag
= 1;
res
= move_window
(djo.
fs, 0);
if (res
!= FR_OK
) break;
memset(dir
, 0, SS
(djo.
fs));
}
}
if (res
== FR_OK
) res
= dir_register
(&djo
); /* Register the object to the directoy */
if (res
!= FR_OK
) {
remove_chain
(djo.
fs, dcl
); /* Could not register, remove cluster chain */
} else {
dir
= djo.
dir;
dir
[DIR_Attr
] = AM_DIR
; /* Attribute */
ST_DWORD
(dir
+DIR_WrtTime
, tim
); /* Created time */
ST_CLUST
(dir
, dcl
); /* Table start cluster */
djo.
fs->wflag
= 1;
res
= sync
(djo.
fs);
}
}
FREE_BUF
();
}
LEAVE_FF
(djo.
fs, res
);
}
/*-----------------------------------------------------------------------*/
/* Change Attribute */
/*-----------------------------------------------------------------------*/
#if 0
FRESULT f_chmod
(
const TCHAR
*path
, /* Pointer to the file path */
BYTE value
, /* Attribute bits */
BYTE mask
/* Attribute mask to change */
)
{
static FRESULT res
;
//DIR dj;
BYTE
*dir
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
FREE_BUF
();
if (_FS_RPATH
&& res
== FR_OK
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
;
if (res
== FR_OK
) {
dir
= djo.
dir;
if (!dir
) { /* Is it a root directory? */
res
= FR_INVALID_NAME
;
} else { /* File or sub directory */
mask
&= AM_RDO
|AM_HID
|AM_SYS
|AM_ARC
; /* Valid attribute mask */
dir
[DIR_Attr
] = (value
& mask
) | (dir
[DIR_Attr
] & (BYTE
)~mask
); /* Apply attribute change */
djo.
fs->wflag
= 1;
res
= sync
(djo.
fs);
}
}
}
LEAVE_FF
(djo.
fs, res
);
}
#endif
/*-----------------------------------------------------------------------*/
/* Change Timestamp */
/*-----------------------------------------------------------------------*/
FRESULT f_utime
(
const TCHAR
*path
, /* Pointer to the file/directory name */
//const FILINFO *fno /* Pointer to the time stamp to be set */
WORD fdate
, /* Value to the date stamp to be set */
WORD ftime
/* Value to the time stamp to be set */
)
{
static FRESULT res
;
//DIR dj;
static BYTE
*dir
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
FREE_BUF
();
if (_FS_RPATH
&& res
== FR_OK
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
;
if (res
== FR_OK
) {
dir
= djo.
dir;
if (!dir
) { /* Root directory */
res
= FR_INVALID_NAME
;
} else { /* File or sub-directory */
ST_WORD
(dir
+DIR_WrtTime
, ftime
);
ST_WORD
(dir
+DIR_WrtDate
, fdate
);
djo.
fs->wflag
= 1;
res
= sync
(djo.
fs);
}
}
}
LEAVE_FF
(djo.
fs, res
);
}
FRESULT f_getutime
(
const TCHAR
*path
, /* Pointer to the file/directory name */
//const FILINFO *fno /* Pointer to the time stamp to be set */
WORD
*ftimedate
/* Value to the date stamp to be set */
)
{
static FRESULT res
;
//DIR dj;
static BYTE
*dir
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Follow the file path */
FREE_BUF
();
if (_FS_RPATH
&& res
== FR_OK
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
;
if (res
== FR_OK
) {
dir
= djo.
dir;
if (!dir
) { /* Root directory */
res
= FR_INVALID_NAME
;
} else { /* File or sub-directory */
//drv_calls.memcpy_lib2usp(ftimedate,dir+DIR_WrtTime,4); //not userspace!!!
*ftimedate
= LD_WORD
(dir
+DIR_WrtTime
);
*(ftimedate
+1) = LD_WORD
(dir
+DIR_WrtDate
);
djo.
fs->wflag
= 1;
res
= sync
(djo.
fs);
}
}
}
LEAVE_FF
(djo.
fs, res
);
}
/*-----------------------------------------------------------------------*/
/* Rename File/Directory */
/*-----------------------------------------------------------------------*/
FRESULT f_rename
(
const TCHAR
*path_old
, /* Pointer to the old name */
const TCHAR
*path_new
/* Pointer to the new name */
)
{
static FRESULT res
;
//DIR djo, djn;
static BYTE buf
[21];
BYTE
*dir
;
DWORD dw
;
DEF_NAMEBUF
;
drv_calls.
strcpy_usp2lib(pathbuf
,path_old
);
res
= chk_mounted
(&djo.
fs, 1);
if (res
== FR_OK
) {
djn.
fs = djo.
fs;
INIT_BUF
(djo
);
res
= follow_path
(&djo
, pathbuf
); /* Check old object */
if (_FS_RPATH
&& res
== FR_OK
&& (djo.
fn[NS
] & NS_DOT
))
res
= FR_INVALID_NAME
;
#if _FS_SHARE
if (res
== FR_OK
) res
= chk_lock
(&djo
, 2);
#endif
if (res
== FR_OK
) { /* Old object is found */
if (!djo.
dir) { /* Is root dir? */
res
= FR_NO_FILE
;
} else {
memcpy(buf
, djo.
dir+DIR_Attr
, 21); /* Save the object information except for name */
memcpy(&djn
, &djo
, sizeof(DIR
)); /* Check new object */
drv_calls.
strcpy_usp2lib(pathbuf
,path_new
);
res
= follow_path
(&djn
, pathbuf
);
if (res
== FR_OK
) res
= FR_EXIST
; /* The new object name is already existing */
if (res
== FR_NO_FILE
) { /* Is it a valid path and no name collision? */
/* Start critical section that any interruption or error can cause cross-link */
res
= dir_register
(&djn
); /* Register the new entry */
if (res
== FR_OK
) {
dir
= djn.
dir; /* Copy object information except for name */
memcpy(dir
+13, buf
+2, 19);
dir
[DIR_Attr
] = buf
[0] | AM_ARC
;
djo.
fs->wflag
= 1;
if (djo.
sclust != djn.
sclust && (dir
[DIR_Attr
] & AM_DIR
)) { /* Update .. entry in the directory if needed */
dw
= clust2sect
(djn.
fs, LD_CLUST
(dir
));
if (!dw
) {
res
= FR_INT_ERR
;
} else {
res
= move_window
(djn.
fs, dw
);
dir
= djn.
fs->win
+SZ_DIR
; /* .. entry */
if (res
== FR_OK
&& dir
[1] == '.') {
dw
= (djn.
fs->fs_type
== FS_FAT32
&& djn.
sclust == djn.
fs->dirbase
) ? 0 : djn.
sclust;
ST_CLUST
(dir
, dw
);
djn.
fs->wflag
= 1;
}
}
}
if (res
== FR_OK
) {
res
= dir_remove
(&djo
); /* Remove old entry */
if (res
== FR_OK
)
res
= sync
(djo.
fs);
}
}
/* End critical section */
}
}
}
FREE_BUF
();
}
LEAVE_FF
(djo.
fs, res
);
}
#endif /* !_FS_READONLY */
#endif /* _FS_MINIMIZE == 0 */
#endif /* _FS_MINIMIZE <= 1 */
#endif /* _FS_MINIMIZE <= 2 */
/*-----------------------------------------------------------------------*/
/* Forward data to the stream directly (available on only tiny cfg) */
/*-----------------------------------------------------------------------*/
#if _USE_FORWARD && _FS_TINY
FRESULT f_forward
(
FIL
*fp
, /* Pointer to the file object */
UINT
(*func
)(const BYTE
*,UINT
), /* Pointer to the streaming function */
UINT btr
, /* Number of bytes to forward */
UINT
*bf
/* Pointer to number of bytes forwarded */
)
{
FRESULT res
;
DWORD remain
, clst
, sect
;
UINT rcnt
;
BYTE csect
;
*bf
= 0; /* Initialize byte counter */
res
= validate
(fp
->fs
, fp
->id
); /* Check validity of the object */
if (res
!= FR_OK
) LEAVE_FF
(fp
->fs
, res
);
if (fp
->flag
& FA__ERROR
) /* Check error flag */
LEAVE_FF
(fp
->fs
, FR_INT_ERR
);
if (!(fp
->flag
& FA_READ
)) /* Check access mode */
LEAVE_FF
(fp
->fs
, FR_DENIED
);
remain
= fp
->fsize
- fp
->fptr
;
if (btr
> remain
) btr
= (UINT
)remain
; /* Truncate btr by remaining bytes */
for ( ; btr
&& (*func
)(0, 0); /* Repeat until all data transferred or stream becomes busy */
fp
->fptr
+= rcnt
, *bf
+= rcnt
, btr
-= rcnt
) {
csect
= (BYTE
)(fp
->fptr
/ SS
(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
if ((fp
->fptr
% SS
(fp
->fs
)) == 0) { /* On the sector boundary? */
if (!csect
) { /* On the cluster boundary? */
clst
= (fp
->fptr
== 0) ? /* On the top of the file? */
fp
->sclust
: get_fat
(fp
->fs
, fp
->clust
);
if (clst
<= 1) ABORT
(fp
->fs
, FR_INT_ERR
);
if (clst
== 0xFFFFFFFF) ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->clust
= clst
; /* Update current cluster */
}
}
sect
= clust2sect
(fp
->fs
, fp
->clust
); /* Get current data sector */
if (!sect
) ABORT
(fp
->fs
, FR_INT_ERR
);
sect
+= csect
;
if (move_window
(fp
->fs
, sect
)) /* Move sector window */
ABORT
(fp
->fs
, FR_DISK_ERR
);
fp
->dsect
= sect
;
rcnt
= SS
(fp
->fs
) - (WORD
)(fp
->fptr
% SS
(fp
->fs
)); /* Forward data from sector window */
if (rcnt
> btr
) rcnt
= btr
;
rcnt
= (*func
)(&fp
->fs
->win
[(WORD
)fp
->fptr
% SS
(fp
->fs
)], rcnt
);
if (!rcnt
) ABORT
(fp
->fs
, FR_INT_ERR
);
}
LEAVE_FF
(fp
->fs
, FR_OK
);
}
#endif /* _USE_FORWARD */
#if _USE_MKFS && !_FS_READONLY
/*-----------------------------------------------------------------------*/
/* Create File System on the Drive */
/*-----------------------------------------------------------------------*/
#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
#define N_FATS 1 /* Number of FAT copies (1 or 2) */
FRESULT f_mkfs
(
BYTE drv
, /* Logical drive number */
BYTE sfd
, /* Partitioning rule 0:FDISK, 1:SFD */
UINT au
/* Allocation unit size [bytes] */
)
{
static const WORD vst
[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
static const WORD cst
[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
BYTE fmt
, md
, *tbl
;
DWORD n_clst
, vs
, n
, wsect
;
UINT i
;
DWORD b_vol
, b_fat
, b_dir
, b_data
; /* Offset (LBA) */
DWORD n_vol
, n_rsv
, n_fat
, n_dir
; /* Size */
FATFS
*fs
;
DSTATUS stat
;
/* Check mounted drive and clear work area */
if (drv
>= _VOLUMES
) return FR_INVALID_DRIVE
;
fs
= FatFs
[drv
];
if (!fs
) return FR_NOT_ENABLED
;
fs
->fs_type
= 0;
drv
= LD2PD
(drv
);
/* Get disk statics */
stat
= disk_initialize
(drv
,fs
->win
);
if (stat
& STA_NOINIT
) return FR_NOT_READY
;
if (stat
& STA_PROTECT
) return FR_WRITE_PROTECTED
;
#if _MAX_SS != 512 /* Get disk sector size */
if (disk_ioctl
(drv
, GET_SECTOR_SIZE
, &SS
(fs
)) != RES_OK
)
return FR_DISK_ERR
;
#endif
if (disk_ioctl
(drv
, GET_SECTOR_COUNT
, &n_vol
) != RES_OK
|| n_vol
< 128)
return FR_DISK_ERR
;
b_vol
= (sfd
) ? 0 : 63; /* Volume start sector */
n_vol
-= b_vol
;
if (au
& (au
- 1)) au
= 0; /* Check validity of the AU size */
if (!au
) { /* AU auto selection */
vs
= n_vol
/ (2000 / (SS
(fs
) / 512));
for (i
= 0; vs
< vst
[i
]; i
++) ;
au
= cst
[i
];
}
au
/= SS
(fs
); /* Number of sectors per cluster */
if (au
== 0) au
= 1;
if (au
> 128) au
= 128;
/* Pre-compute number of clusters and FAT syb-type */
n_clst
= n_vol
/ au
;
fmt
= FS_FAT12
;
if (n_clst
>= MIN_FAT16
) fmt
= FS_FAT16
;
if (n_clst
>= MIN_FAT32
) fmt
= FS_FAT32
;
/* Determine offset and size of FAT structure */
if (fmt
== FS_FAT32
) {
n_fat
= ((n_clst
* 4) + 8 + SS
(fs
) - 1) / SS
(fs
);
n_rsv
= 32;
n_dir
= 0;
} else {
n_fat
= (fmt
== FS_FAT12
) ? (n_clst
* 3 + 1) / 2 + 3 : (n_clst
* 2) + 4;
n_fat
= (n_fat
+ SS
(fs
) - 1) / SS
(fs
);
n_rsv
= 1;
n_dir
= (DWORD
)N_ROOTDIR
* SZ_DIR
/ SS
(fs
);
}
b_fat
= b_vol
+ n_rsv
; /* FAT area start sector */
b_dir
= b_fat
+ n_fat
* N_FATS
; /* Directory area start sector */
b_data
= b_dir
+ n_dir
; /* Data area start sector */
if (n_vol
< b_data
+ au
) return FR_MKFS_ABORTED
; /* Too small volume */
/* Align data start sector to erase block boundary (for flash memory media) */
if (disk_ioctl
(drv
, GET_BLOCK_SIZE
, &n
) != RES_OK
|| !n
|| n
> 32768) n
= 1;
n
= (b_data
+ n
- 1) & ~
(n
- 1); /* Next nearest erase block from current data start */
n
= (n
- b_data
) / N_FATS
;
if (fmt
== FS_FAT32
) { /* FAT32: Move FAT offset */
n_rsv
+= n
;
b_fat
+= n
;
} else { /* FAT12/16: Expand FAT size */
n_fat
+= n
;
}
/* Determine number of clusters and final check of validity of the FAT sub-type */
n_clst
= (n_vol
- n_rsv
- n_fat
* N_FATS
- n_dir
) / au
;
if ( (fmt
== FS_FAT16
&& n_clst
< MIN_FAT16
)
|| (fmt
== FS_FAT32
&& n_clst
< MIN_FAT32
))
return FR_MKFS_ABORTED
;
/* Create partition table if required */
if (sfd
) { /* No patition table (SFD) */
md
= 0xF0;
} else { /* With patition table (FDISK) */
DWORD n_disk
= b_vol
+ n_vol
;
memset(fs
->win
, 0, SS
(fs
));
tbl
= fs
->win
+MBR_Table
;
ST_DWORD
(tbl
, 0x00010180); /* Partition start in CHS */
if (n_disk
< 63UL
* 255 * 1024) { /* Partition end in CHS */
n_disk
= n_disk
/ 63 / 255;
tbl
[7] = (BYTE
)n_disk
;
tbl
[6] = (BYTE
)((n_disk
>> 2) | 63);
} else {
ST_WORD
(&tbl
[6], 0xFFFF); /* CHS saturated */
}
tbl
[5] = 254;
if (fmt
!= FS_FAT32
) /* System ID */
tbl
[4] = (n_vol
< 0x10000) ? 0x04 : 0x06;
else
tbl
[4] = 0x0c;
ST_DWORD
(tbl
+8, 63); /* Partition start in LBA */
ST_DWORD
(tbl
+12, n_vol
); /* Partition size in LBA */
ST_WORD
(fs
->win
+BS_55AA
, 0xAA55); /* MBR signature */
if (disk_write
(drv
, fs
->win
, 0, 1) != RES_OK
) /* Put the MBR into first physical sector */
return FR_DISK_ERR
;
md
= 0xF8;
}
/* Create volume boot record */
tbl
= fs
->win
; /* Clear sector */
memset(tbl
, 0, SS
(fs
));
memcpy(tbl
, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
i
= SS
(fs
); /* Sector size */
ST_WORD
(tbl
+BPB_BytsPerSec
, i
);
tbl
[BPB_SecPerClus
] = (BYTE
)au
; /* Sectors per cluster */
ST_WORD
(tbl
+BPB_RsvdSecCnt
, n_rsv
); /* Reserved sectors */
tbl
[BPB_NumFATs
] = N_FATS
; /* Number of FATs */
i
= (fmt
== FS_FAT32
) ? 0 : N_ROOTDIR
; /* Number of rootdir entries */
ST_WORD
(tbl
+BPB_RootEntCnt
, i
);
if (n_vol
< 0x10000) { /* Number of total sectors */
ST_WORD
(tbl
+BPB_TotSec16
, n_vol
);
} else {
ST_DWORD
(tbl
+BPB_TotSec32
, n_vol
);
}
tbl
[BPB_Media
] = md
; /* Media descriptor */
ST_WORD
(tbl
+BPB_SecPerTrk
, 63); /* Number of sectors per track */
ST_WORD
(tbl
+BPB_NumHeads
, 255); /* Number of heads */
ST_DWORD
(tbl
+BPB_HiddSec
, b_vol
); /* Hidden sectors */
n
= get_fattime
(); /* Use current time as VSN */
if (fmt
== FS_FAT32
) {
ST_DWORD
(tbl
+BS_VolID32
, n
); /* VSN */
ST_DWORD
(tbl
+BPB_FATSz32
, n_fat
); /* Number of sectors per FAT */
ST_DWORD
(tbl
+BPB_RootClus
, 2); /* Root directory start cluster (2) */
ST_WORD
(tbl
+BPB_FSInfo
, 1); /* FSInfo record offset (VBR+1) */
ST_WORD
(tbl
+BPB_BkBootSec
, 6); /* Backup boot record offset (VBR+6) */
tbl
[BS_DrvNum32
] = 0x80; /* Drive number */
tbl
[BS_BootSig32
] = 0x29; /* Extended boot signature */
memcpy(tbl
+BS_VolLab32
, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
} else {
ST_DWORD
(tbl
+BS_VolID
, n
); /* VSN */
ST_WORD
(tbl
+BPB_FATSz16
, n_fat
); /* Number of sectors per FAT */
tbl
[BS_DrvNum
] = 0x80; /* Drive number */
tbl
[BS_BootSig
] = 0x29; /* Extended boot signature */
memcpy(tbl
+BS_VolLab
, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
}
ST_WORD
(tbl
+BS_55AA
, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
if (disk_write
(drv
, tbl
, b_vol
, 1) != RES_OK
) /* Write VBR */
return FR_DISK_ERR
;
if (fmt
== FS_FAT32
) /* Write backup VBR if needed (VBR+6) */
disk_write
(drv
, tbl
, b_vol
+ 6, 1);
/* Initialize FAT area */
wsect
= b_fat
;
for (i
= 0; i
< N_FATS
; i
++) { /* Initialize each FAT copy */
memset(tbl
, 0, SS
(fs
)); /* 1st sector of the FAT */
n
= md
; /* Media descriptor byte */
if (fmt
!= FS_FAT32
) {
n
|= (fmt
== FS_FAT12
) ? 0x00FFFF00 : 0xFFFFFF00;
ST_DWORD
(tbl
+0, n
); /* Reserve cluster #0-1 (FAT12/16) */
} else {
n
|= 0xFFFFFF00;
ST_DWORD
(tbl
+0, n
); /* Reserve cluster #0-1 (FAT32) */
ST_DWORD
(tbl
+4, 0xFFFFFFFF);
ST_DWORD
(tbl
+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
}
if (disk_write
(drv
, tbl
, wsect
++, 1) != RES_OK
)
return FR_DISK_ERR
;
memset(tbl
, 0, SS
(fs
)); /* Fill following FAT entries with zero */
for (n
= 1; n
< n_fat
; n
++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
if (disk_write
(drv
, tbl
, wsect
++, 1) != RES_OK
)
return FR_DISK_ERR
;
}
}
/* Initialize root directory */
i
= (fmt
== FS_FAT32
) ? au
: n_dir
;
do {
if (disk_write
(drv
, tbl
, wsect
++, 1) != RES_OK
)
return FR_DISK_ERR
;
} while (--i
);
#if _USE_ERASE /* Erase data area if needed */
{
DWORD eb
[2];
eb
[0] = wsect
; eb
[1] = wsect
+ (n_clst
- ((fmt
== FS_FAT32
) ? 1 : 0)) * au
- 1;
disk_ioctl
(drv
, CTRL_ERASE_SECTOR
, eb
);
}
#endif
/* Create FSInfo if needed */
if (fmt
== FS_FAT32
) {
ST_DWORD
(tbl
+FSI_LeadSig
, 0x41615252);
ST_DWORD
(tbl
+FSI_StrucSig
, 0x61417272);
ST_DWORD
(tbl
+FSI_Free_Count
, n_clst
- 1); /* Number of free clusters */
ST_DWORD
(tbl
+FSI_Nxt_Free
, 2); /* Last allocated cluster# */
ST_WORD
(tbl
+BS_55AA
, 0xAA55);
disk_write
(drv
, tbl
, b_vol
+ 1, 1); /* Write original (VBR+1) */
disk_write
(drv
, tbl
, b_vol
+ 7, 1); /* Write backup (VBR+7) */
}
return (disk_ioctl
(drv
, CTRL_SYNC
, (void*)0) == RES_OK
) ? FR_OK
: FR_DISK_ERR
;
}
#endif /* _USE_MKFS && !_FS_READONLY */
#if _USE_STRFUNC
/*-----------------------------------------------------------------------*/
/* Get a string from the file */
/*-----------------------------------------------------------------------*/
TCHAR
* f_gets
(
TCHAR
* buff
, /* Pointer to the string buffer to read */
int len
, /* Size of string buffer (characters) */
FIL
* fil
/* Pointer to the file object */
)
{
int n
= 0;
TCHAR c
, *p
= buff
;
BYTE s
[2];
UINT rc
;
while (n
< len
- 1) { /* Read bytes until buffer gets filled */
f_read
(fil
, s
, 1, &rc
);
if (rc
!= 1) break; /* Break on EOF or error */
c
= s
[0];
#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
if (c
>= 0x80) {
if (c
< 0xC0) continue; /* Skip stray trailer */
if (c
< 0xE0) { /* Two-byte sequense */
f_read
(fil
, s
, 1, &rc
);
if (rc
!= 1) break;
c
= ((c
& 0x1F) << 6) | (s
[0] & 0x3F);
if (c
< 0x80) c
= '?';
} else {
if (c
< 0xF0) { /* Three-byte sequense */
f_read
(fil
, s
, 2, &rc
);
if (rc
!= 2) break;
c
= (c
<< 12) | ((s
[0] & 0x3F) << 6) | (s
[1] & 0x3F);
if (c
< 0x800) c
= '?';
} else { /* Reject four-byte sequense */
c
= '?';
}
}
}
#endif
#if _USE_STRFUNC >= 2
if (c
== '\r') continue; /* Strip '\r' */
#endif
*p
++ = c
;
n
++;
if (c
== '\n') break; /* Break on EOL */
}
*p
= 0;
return n
? buff
: 0; /* When no data read (eof or error), return with error. */
}
#if !_FS_READONLY
#include <stdarg.h>
/*-----------------------------------------------------------------------*/
/* Put a character to the file */
/*-----------------------------------------------------------------------*/
int f_putc
(
TCHAR c
, /* A character to be output */
FIL
* fil
/* Pointer to the file object */
)
{
UINT bw
, btw
;
BYTE s
[3];
#if _USE_STRFUNC >= 2
if (c
== '\n') f_putc
('\r', fil
); /* LF -> CRLF conversion */
#endif
#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
if (c
< 0x80) { /* 7-bit */
s
[0] = (BYTE
)c
;
btw
= 1;
} else {
if (c
< 0x800) { /* 11-bit */
s
[0] = (BYTE
)(0xC0 | (c
>> 6));
s
[1] = (BYTE
)(0x80 | (c
& 0x3F));
btw
= 2;
} else { /* 16-bit */
s
[0] = (BYTE
)(0xE0 | (c
>> 12));
s
[1] = (BYTE
)(0x80 | ((c
>> 6) & 0x3F));
s
[2] = (BYTE
)(0x80 | (c
& 0x3F));
btw
= 3;
}
}
#else /* Write the character without conversion */
s
[0] = (BYTE
)c
;
btw
= 1;
#endif
f_write
(fil
, s
, btw
, &bw
); /* Write the char to the file */
return (bw
== btw
) ? 1 : EOF
; /* Return the result */
}
/*-----------------------------------------------------------------------*/
/* Put a string to the file */
/*-----------------------------------------------------------------------*/
int f_puts
(
const TCHAR
* str
, /* Pointer to the string to be output */
FIL
* fil
/* Pointer to the file object */
)
{
int n
;
for (n
= 0; *str
; str
++, n
++) {
if (f_putc
(*str
, fil
) == EOF
) return EOF
;
}
return n
;
}
/*-----------------------------------------------------------------------*/
/* Put a formatted string to the file */
/*-----------------------------------------------------------------------*/
int f_printf
(
FIL
* fil
, /* Pointer to the file object */
const TCHAR
* str
, /* Pointer to the format string */
...
/* Optional arguments... */
)
{
va_list arp
;
BYTE f
, r
;
UINT i
, j
, w
;
ULONG v
;
TCHAR c
, d
, s
[16], *p
;
int res
, cc
;
va_start(arp
, str
);
for (cc
= res
= 0; cc
!= EOF
; res
+= cc
) {
c
= *str
++;
if (c
== 0) break; /* End of string */
if (c
!= '%') { /* Non escape character */
cc
= f_putc
(c
, fil
);
if (cc
!= EOF
) cc
= 1;
continue;
}
w
= f
= 0;
c
= *str
++;
if (c
== '0') { /* Flag: '0' padding */
f
= 1; c
= *str
++;
} else {
if (c
== '-') { /* Flag: left justified */
f
= 2; c
= *str
++;
}
}
while (IsDigit
(c
)) { /* Precision */
w
= w
* 10 + c
- '0';
c
= *str
++;
}
if (c
== 'l' || c
== 'L') { /* Prefix: Size is long int */
f
|= 4; c
= *str
++;
}
if (!c
) break;
d
= c
;
if (IsLower
(d
)) d
-= 0x20;
switch (d
) { /* Type is... */
case 'S' : /* String */
p
= va_arg(arp
, TCHAR
*);
for (j
= 0; p
[j
]; j
++) ;
res
= 0;
while (!(f
& 2) && j
++ < w
) res
+= (cc
= f_putc
(' ', fil
));
res
+= (cc
= f_puts
(p
, fil
));
while (j
++ < w
) res
+= (cc
= f_putc
(' ', fil
));
if (cc
!= EOF
) cc
= res
;
continue;
case 'C' : /* Character */
cc
= f_putc
((TCHAR
)va_arg(arp
, int), fil
); continue;
case 'B' : /* Binary */
r
= 2; break;
case 'O' : /* Octal */
r
= 8; break;
case 'D' : /* Signed decimal */
case 'U' : /* Unsigned decimal */
r
= 10; break;
case 'X' : /* Hexdecimal */
r
= 16; break;
default: /* Unknown type (passthrough) */
cc
= f_putc
(c
, fil
); continue;
}
/* Get an argument and put it in numeral */
v
= (f
& 4) ? va_arg(arp
, long) : ((d
== 'D') ? (long)va_arg(arp
, int) : va_arg(arp
, unsigned int));
if (d
== 'D' && (v
& 0x80000000)) {
v
= 0 - v
;
f
|= 8;
}
i
= 0;
do {
d
= (TCHAR
)(v
% r
); v
/= r
;
if (d
> 9) d
+= (c
== 'x') ? 0x27 : 0x07;
s
[i
++] = d
+ '0';
} while (v
&& i
< sizeof(s
) / sizeof(s
[0]));
if (f
& 8) s
[i
++] = '-';
j
= i
; d
= (f
& 1) ? '0' : ' ';
res
= 0;
while (!(f
& 2) && j
++ < w
) res
+= (cc
= f_putc
(d
, fil
));
do res
+= (cc
= f_putc
(s
[--i
], fil
)); while(i
);
while (j
++ < w
) res
+= (cc
= f_putc
(' ', fil
));
if (cc
!= EOF
) cc
= res
;
}
va_end(arp
);
return (cc
== EOF
) ? cc
: res
;
}
#endif /* !_FS_READONLY */
#endif /* _USE_STRFUNC */