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Add source code of the firmware for the IO Board

Pawel Jablonski authored on 05/06/2023 17:01:27
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fw/src/fatfs/ff.c
History View file @ 95b436b
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+/*----------------------------------------------------------------------------/
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+/  FatFs - FAT file system module  R0.11                 (C)ChaN, 2015
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+/-----------------------------------------------------------------------------/
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+/ FatFs module is a free software that opened under license policy of
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+/ following conditions.
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+/
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+/ Copyright (C) 2015, ChaN, all right reserved.
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+/
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+/ 1. Redistributions of source code must retain the above copyright notice,
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+/    this condition and the following disclaimer.
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+/
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+/ This software is provided by the copyright holder and contributors "AS IS"
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+/ and any warranties related to this software are DISCLAIMED.
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+/ The copyright owner or contributors be NOT LIABLE for any damages caused
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+/ by use of this software.
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+/-----------------------------------------------------------------------------/
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+/ Feb 26,'06 R0.00  Prototype.
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+/
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+/ Apr 29,'06 R0.01  First stable version.
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+/
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+/ Jun 01,'06 R0.02  Added FAT12 support.
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+/                   Removed unbuffered mode.
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+/                   Fixed a problem on small (<32M) partition.
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+/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
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+/
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+/ Sep 22,'06 R0.03  Added f_rename().
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+/                   Changed option _FS_MINIMUM to _FS_MINIMIZE.
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+/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
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+/                   Fixed f_mkdir() creates incorrect directory on FAT32.
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+/
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+/ Feb 04,'07 R0.04  Supported multiple drive system.
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+/                   Changed some interfaces for multiple drive system.
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+/                   Changed f_mountdrv() to f_mount().
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+/                   Added f_mkfs().
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+/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
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+/                   Added a capability of extending file size to f_lseek().
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+/                   Added minimization level 3.
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+/                   Fixed an endian sensitive code in f_mkfs().
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+/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
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+/                   Added FSINFO support.
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+/                   Fixed DBCS name can result FR_INVALID_NAME.
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+/                   Fixed short seek (<= csize) collapses the file object.
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+/
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+/ Aug 25,'07 R0.05  Changed arguments of f_read(), f_write() and f_mkfs().
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+/                   Fixed f_mkfs() on FAT32 creates incorrect FSINFO.
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+/                   Fixed f_mkdir() on FAT32 creates incorrect directory.
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+/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
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+/                   Fixed off by one error at FAT sub-type determination.
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+/                   Fixed btr in f_read() can be mistruncated.
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+/                   Fixed cached sector is not flushed when create and close without write.
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+/
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+/ Apr 01,'08 R0.06  Added fputc(), fputs(), fprintf() and fgets().
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+/                   Improved performance of f_lseek() on moving to the same or following cluster.
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+/
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+/ Apr 01,'09 R0.07  Merged Tiny-FatFs as a configuration option. (_FS_TINY)
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+/                   Added long file name feature.
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+/                   Added multiple code page feature.
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+/                   Added re-entrancy for multitask operation.
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+/                   Added auto cluster size selection to f_mkfs().
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+/                   Added rewind option to f_readdir().
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+/                   Changed result code of critical errors.
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+/                   Renamed string functions to avoid name collision.
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+/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
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+/                   Added multiple sector size feature.
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+/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
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+/                   Fixed wrong cache control in f_lseek().
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+/                   Added relative path feature.
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+/                   Added f_chdir() and f_chdrive().
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+/                   Added proper case conversion to extended character.
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+/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
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+/                   Fixed f_unlink() fails to remove a sub-directory on _FS_RPATH.
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+/                   Fixed name matching error on the 13 character boundary.
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+/                   Added a configuration option, _LFN_UNICODE.
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+/                   Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
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+/
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+/ May 15,'10 R0.08  Added a memory configuration option. (_USE_LFN = 3)
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+/                   Added file lock feature. (_FS_SHARE)
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+/                   Added fast seek feature. (_USE_FASTSEEK)
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+/                   Changed some types on the API, XCHAR->TCHAR.
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+/                   Changed .fname in the FILINFO structure on Unicode cfg.
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+/                   String functions support UTF-8 encoding files on Unicode cfg.
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+/ Aug 16,'10 R0.08a Added f_getcwd().
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+/                   Added sector erase feature. (_USE_ERASE)
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+/                   Moved file lock semaphore table from fs object to the bss.
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+/                   Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
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+/                   Fixed f_mkfs() creates wrong FAT32 volume.
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+/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
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+/                   f_lseek() reports required table size on creating CLMP.
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+/                   Extended format syntax of f_printf().
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+/                   Ignores duplicated directory separators in given path name.
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+/
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+/ Sep 06,'11 R0.09  f_mkfs() supports multiple partition to complete the multiple partition feature.
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+/                   Added f_fdisk().
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+/ Aug 27,'12 R0.09a Changed f_open() and f_opendir() reject null object pointer to avoid crash.
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+/                   Changed option name _FS_SHARE to _FS_LOCK.
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+/                   Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
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+/ Jan 24,'13 R0.09b Added f_setlabel() and f_getlabel().
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+/
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+/ Oct 02,'13 R0.10  Added selection of character encoding on the file. (_STRF_ENCODE)
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+/                   Added f_closedir().
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+/                   Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)
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+/                   Added forced mount feature with changes of f_mount().
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+/                   Improved behavior of volume auto detection.
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+/                   Improved write throughput of f_puts() and f_printf().
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+/                   Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().
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+/                   Fixed f_write() can be truncated when the file size is close to 4GB.
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+/                   Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.
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+/ Jan 15,'14 R0.10a Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)
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+/                   Added a configuration option of minimum sector size. (_MIN_SS)
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+/                   2nd argument of f_rename() can have a drive number and it will be ignored.
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+/                   Fixed f_mount() with forced mount fails when drive number is >= 1.
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+/                   Fixed f_close() invalidates the file object without volume lock.
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+/                   Fixed f_closedir() returns but the volume lock is left acquired.
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+/                   Fixed creation of an entry with LFN fails on too many SFN collisions.
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+/ May 19,'14 R0.10b Fixed a hard error in the disk I/O layer can collapse the directory entry.
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+/                   Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN.
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+/ Nov  9,'14 R0.10c Added a configuration option for the platforms without RTC. (_FS_NORTC)
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+/                   Fixed volume label created by Mac OS X cannot be retrieved with f_getlabel(). (appeared at R0.09b)
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+/                   Fixed a potential problem of FAT access that can appear on disk error.
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+/                   Fixed null pointer dereference on attempting to delete the root direcotry. (appeared at R0.08)
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+/ Feb 02,'15 R0.11  Added f_findfirst() and f_findnext(). (_USE_FIND)
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+/                   Fixed f_unlink() does not remove cluster chain of the file. (appeared at R0.10c)
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+/                   Fixed _FS_NORTC option does not work properly. (appeared at R0.10c)
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+/---------------------------------------------------------------------------*/
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+
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+#include "ff.h"			/* Declarations of FatFs API */
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+#include "diskio.h"		/* Declarations of disk I/O functions */
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+
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+
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+/*--------------------------------------------------------------------------
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+
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+   Module Private Definitions
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+
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+---------------------------------------------------------------------------*/
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+
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+#if _FATFS != 32020	/* Revision ID */
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+#error Wrong include file (ff.h).
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+#endif
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+
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+
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+/* Reentrancy related */
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+#if _FS_REENTRANT
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+#if _USE_LFN == 1
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+#error Static LFN work area cannot be used at thread-safe configuration
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+#endif
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+#define	ENTER_FF(fs)		{ if (!lock_fs(fs)) return FR_TIMEOUT; }
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+#define	LEAVE_FF(fs, res)	{ unlock_fs(fs, res); return res; }
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+#else
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+#define	ENTER_FF(fs)
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+#define LEAVE_FF(fs, res)	return res
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+#endif
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+
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+#define	ABORT(fs, res)		{ fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
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+
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+
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+/* Definitions of sector size */
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+#if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)
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+#error Wrong sector size configuration
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+#endif
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+#if _MAX_SS == _MIN_SS
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+#define	SS(fs)	((UINT)_MAX_SS)	/* Fixed sector size */
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+#else
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+#define	SS(fs)	((fs)->ssize)	/* Variable sector size */
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+#endif
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+
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+
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+/* Timestamp feature */
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+#if _FS_NORTC == 1
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+#if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
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+#error Invalid _FS_NORTC settings
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+#endif
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+#define GET_FATTIME()	((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
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+#else
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+#define GET_FATTIME()	get_fattime()
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+#endif
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+
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+
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+/* File access control feature */
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+#if _FS_LOCK
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+#if _FS_READONLY
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+#error _FS_LOCK must be 0 at read-only configuration
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+#endif
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+typedef struct {
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+	FATFS *fs;		/* Object ID 1, volume (NULL:blank entry) */
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+	DWORD clu;		/* Object ID 2, directory (0:root) */
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+	WORD idx;		/* Object ID 3, directory index */
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+	WORD ctr;		/* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
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+} FILESEM;
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+#endif
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+
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+
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+
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+/* DBCS code ranges and SBCS extend character conversion table */
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+
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+#if _CODE_PAGE == 932	/* Japanese Shift-JIS */
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+#define _DF1S	0x81	/* DBC 1st byte range 1 start */
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+#define _DF1E	0x9F	/* DBC 1st byte range 1 end */
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+#define _DF2S	0xE0	/* DBC 1st byte range 2 start */
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+#define _DF2E	0xFC	/* DBC 1st byte range 2 end */
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+#define _DS1S	0x40	/* DBC 2nd byte range 1 start */
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+#define _DS1E	0x7E	/* DBC 2nd byte range 1 end */
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+#define _DS2S	0x80	/* DBC 2nd byte range 2 start */
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+#define _DS2E	0xFC	/* DBC 2nd byte range 2 end */
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+
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+#elif _CODE_PAGE == 936	/* Simplified Chinese GBK */
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+#define _DF1S	0x81
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+#define _DF1E	0xFE
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+#define _DS1S	0x40
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+#define _DS1E	0x7E
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+#define _DS2S	0x80
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+#define _DS2E	0xFE
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+
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+#elif _CODE_PAGE == 949	/* Korean */
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+#define _DF1S	0x81
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+#define _DF1E	0xFE
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+#define _DS1S	0x41
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+#define _DS1E	0x5A
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+#define _DS2S	0x61
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+#define _DS2E	0x7A
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+#define _DS3S	0x81
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+#define _DS3E	0xFE
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+
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+#elif _CODE_PAGE == 950	/* Traditional Chinese Big5 */
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+#define _DF1S	0x81
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+#define _DF1E	0xFE
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+#define _DS1S	0x40
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+#define _DS1E	0x7E
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+#define _DS2S	0xA1
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+#define _DS2E	0xFE
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+
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+#elif _CODE_PAGE == 437	/* U.S. (OEM) */
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+#define _DF1S	0
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+#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, \
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+				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, \
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+				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, \
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+				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}
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+
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+#elif _CODE_PAGE == 720	/* Arabic (OEM) */
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+#define _DF1S	0
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+#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, \
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+				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, \
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+				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, \
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+				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}
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+
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+#elif _CODE_PAGE == 737	/* Greek (OEM) */
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+#define _DF1S	0
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+#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, \
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+				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, \
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+				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, \
250 
+				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}
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+
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+#elif _CODE_PAGE == 775	/* Baltic (OEM) */
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+#define _DF1S	0
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+#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, \
255 
+				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, \
256 
+				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, \
257 
+				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}
258 
+
259 
+#elif _CODE_PAGE == 850	/* Multilingual Latin 1 (OEM) */
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+#define _DF1S	0
261 
+#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, \
262 
+				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, \
263 
+				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, \
264 
+				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}
265 
+
266 
+#elif _CODE_PAGE == 852	/* Latin 2 (OEM) */
267 
+#define _DF1S	0
268 
+#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, \
269 
+				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, \
270 
+				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, \
271 
+				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}
272 
+
273 
+#elif _CODE_PAGE == 855	/* Cyrillic (OEM) */
274 
+#define _DF1S	0
275 
+#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, \
276 
+				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, \
277 
+				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, \
278 
+				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}
279 
+
280 
+#elif _CODE_PAGE == 857	/* Turkish (OEM) */
281 
+#define _DF1S	0
282 
+#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, \
283 
+				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, \
284 
+				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, \
285 
+				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}
286 
+
287 
+#elif _CODE_PAGE == 858	/* Multilingual Latin 1 + Euro (OEM) */
288 
+#define _DF1S	0
289 
+#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, \
290 
+				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, \
291 
+				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, \
292 
+				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}
293 
+
294 
+#elif _CODE_PAGE == 862	/* Hebrew (OEM) */
295 
+#define _DF1S	0
296 
+#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, \
297 
+				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, \
298 
+				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, \
299 
+				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}
300 
+
301 
+#elif _CODE_PAGE == 866	/* Russian (OEM) */
302 
+#define _DF1S	0
303 
+#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, \
304 
+				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, \
305 
+				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, \
306 
+				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}
307 
+
308 
+#elif _CODE_PAGE == 874	/* Thai (OEM, Windows) */
309 
+#define _DF1S	0
310 
+#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, \
311 
+				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, \
312 
+				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, \
313 
+				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}
314 
+
315 
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
316 
+#define _DF1S	0
317 
+#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, \
318 
+				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, \
319 
+				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, \
320 
+				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}
321 
+
322 
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
323 
+#define _DF1S	0
324 
+#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, \
325 
+				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, \
326 
+				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, \
327 
+				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}
328 
+
329 
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
330 
+#define _DF1S	0
331 
+#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, \
332 
+				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, \
333 
+				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, \
334 
+				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}
335 
+
336 
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
337 
+#define _DF1S	0
338 
+#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, \
339 
+				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, \
340 
+				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, \
341 
+				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}
342 
+
343 
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
344 
+#define _DF1S	0
345 
+#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, \
346 
+				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, \
347 
+				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, \
348 
+				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}
349 
+
350 
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
351 
+#define _DF1S	0
352 
+#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, \
353 
+				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, \
354 
+				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, \
355 
+				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}
356 
+
357 
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
358 
+#define _DF1S	0
359 
+#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, \
360 
+				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, \
361 
+				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, \
362 
+				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}
363 
+
364 
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
365 
+#define _DF1S	0
366 
+#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, \
367 
+				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, \
368 
+				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, \
369 
+				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}
370 
+
371 
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
372 
+#define _DF1S	0
373 
+#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, \
374 
+				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, \
375 
+				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, \
376 
+				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}
377 
+
378 
+#elif _CODE_PAGE == 1	/* ASCII (for only non-LFN cfg) */
379 
+#if _USE_LFN
380 
+#error Cannot use LFN feature without valid code page.
381 
+#endif
382 
+#define _DF1S	0
383 
+
384 
+#else
385 
+#error Unknown code page
386 
+
387 
+#endif
388 
+
389 
+
390 
+/* Character code support macros */
391 
+#define IsUpper(c)	(((c)>='A')&&((c)<='Z'))
392 
+#define IsLower(c)	(((c)>='a')&&((c)<='z'))
393 
+#define IsDigit(c)	(((c)>='0')&&((c)<='9'))
394 
+
395 
+#if _DF1S		/* Code page is DBCS */
396 
+
397 
+#ifdef _DF2S	/* Two 1st byte areas */
398 
+#define IsDBCS1(c)	(((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
399 
+#else			/* One 1st byte area */
400 
+#define IsDBCS1(c)	((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
401 
+#endif
402 
+
403 
+#ifdef _DS3S	/* Three 2nd byte areas */
404 
+#define IsDBCS2(c)	(((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
405 
+#else			/* Two 2nd byte areas */
406 
+#define IsDBCS2(c)	(((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
407 
+#endif
408 
+
409 
+#else			/* Code page is SBCS */
410 
+
411 
+#define IsDBCS1(c)	0
412 
+#define IsDBCS2(c)	0
413 
+
414 
+#endif /* _DF1S */
415 
+
416 
+
417 
+/* Name status flags */
418 
+#define NSFLAG		11		/* Index of name status byte in fn[] */
419 
+#define NS_LOSS		0x01	/* Out of 8.3 format */
420 
+#define NS_LFN		0x02	/* Force to create LFN entry */
421 
+#define NS_LAST		0x04	/* Last segment */
422 
+#define NS_BODY		0x08	/* Lower case flag (body) */
423 
+#define NS_EXT		0x10	/* Lower case flag (ext) */
424 
+#define NS_DOT		0x20	/* Dot entry */
425 
+
426 
+
427 
+/* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
428 
+#define MIN_FAT16	4086U	/* Minimum number of clusters as FAT16 */
429 
+#define	MIN_FAT32	65526U	/* Minimum number of clusters as FAT32 */
430 
+
431 
+
432 
+/* FatFs refers the members in the FAT structures as byte array instead of
433 
+/ structure member because the structure is not binary compatible between
434 
+/ different platforms */
435 
+
436 
+#define BS_jmpBoot			0		/* x86 jump instruction (3) */
437 
+#define BS_OEMName			3		/* OEM name (8) */
438 
+#define BPB_BytsPerSec		11		/* Sector size [byte] (2) */
439 
+#define BPB_SecPerClus		13		/* Cluster size [sector] (1) */
440 
+#define BPB_RsvdSecCnt		14		/* Size of reserved area [sector] (2) */
441 
+#define BPB_NumFATs			16		/* Number of FAT copies (1) */
442 
+#define BPB_RootEntCnt		17		/* Number of root directory entries for FAT12/16 (2) */
443 
+#define BPB_TotSec16		19		/* Volume size [sector] (2) */
444 
+#define BPB_Media			21		/* Media descriptor (1) */
445 
+#define BPB_FATSz16			22		/* FAT size [sector] (2) */
446 
+#define BPB_SecPerTrk		24		/* Track size [sector] (2) */
447 
+#define BPB_NumHeads		26		/* Number of heads (2) */
448 
+#define BPB_HiddSec			28		/* Number of special hidden sectors (4) */
449 
+#define BPB_TotSec32		32		/* Volume size [sector] (4) */
450 
+#define BS_DrvNum			36		/* Physical drive number (2) */
451 
+#define BS_BootSig			38		/* Extended boot signature (1) */
452 
+#define BS_VolID			39		/* Volume serial number (4) */
453 
+#define BS_VolLab			43		/* Volume label (8) */
454 
+#define BS_FilSysType		54		/* File system type (1) */
455 
+#define BPB_FATSz32			36		/* FAT size [sector] (4) */
456 
+#define BPB_ExtFlags		40		/* Extended flags (2) */
457 
+#define BPB_FSVer			42		/* File system version (2) */
458 
+#define BPB_RootClus		44		/* Root directory first cluster (4) */
459 
+#define BPB_FSInfo			48		/* Offset of FSINFO sector (2) */
460 
+#define BPB_BkBootSec		50		/* Offset of backup boot sector (2) */
461 
+#define BS_DrvNum32			64		/* Physical drive number (2) */
462 
+#define BS_BootSig32		66		/* Extended boot signature (1) */
463 
+#define BS_VolID32			67		/* Volume serial number (4) */
464 
+#define BS_VolLab32			71		/* Volume label (8) */
465 
+#define BS_FilSysType32		82		/* File system type (1) */
466 
+#define	FSI_LeadSig			0		/* FSI: Leading signature (4) */
467 
+#define	FSI_StrucSig		484		/* FSI: Structure signature (4) */
468 
+#define	FSI_Free_Count		488		/* FSI: Number of free clusters (4) */
469 
+#define	FSI_Nxt_Free		492		/* FSI: Last allocated cluster (4) */
470 
+#define MBR_Table			446		/* MBR: Partition table offset (2) */
471 
+#define	SZ_PTE				16		/* MBR: Size of a partition table entry */
472 
+#define BS_55AA				510		/* Signature word (2) */
473 
+
474 
+#define	DIR_Name			0		/* Short file name (11) */
475 
+#define	DIR_Attr			11		/* Attribute (1) */
476 
+#define	DIR_NTres			12		/* Lower case flag (1) */
477 
+#define DIR_CrtTimeTenth	13		/* Created time sub-second (1) */
478 
+#define	DIR_CrtTime			14		/* Created time (2) */
479 
+#define	DIR_CrtDate			16		/* Created date (2) */
480 
+#define DIR_LstAccDate		18		/* Last accessed date (2) */
481 
+#define	DIR_FstClusHI		20		/* Higher 16-bit of first cluster (2) */
482 
+#define	DIR_WrtTime			22		/* Modified time (2) */
483 
+#define	DIR_WrtDate			24		/* Modified date (2) */
484 
+#define	DIR_FstClusLO		26		/* Lower 16-bit of first cluster (2) */
485 
+#define	DIR_FileSize		28		/* File size (4) */
486 
+#define	LDIR_Ord			0		/* LFN entry order and LLE flag (1) */
487 
+#define	LDIR_Attr			11		/* LFN attribute (1) */
488 
+#define	LDIR_Type			12		/* LFN type (1) */
489 
+#define	LDIR_Chksum			13		/* Sum of corresponding SFN entry */
490 
+#define	LDIR_FstClusLO		26		/* Must be zero (0) */
491 
+#define	SZ_DIRE				32		/* Size of a directory entry */
492 
+#define	LLEF				0x40	/* Last long entry flag in LDIR_Ord */
493 
+#define	DDEM				0xE5	/* Deleted directory entry mark at DIR_Name[0] */
494 
+#define	RDDEM				0x05	/* Replacement of the character collides with DDEM */
495 
+
496 
+
497 
+
498 
+
499 
+/*------------------------------------------------------------*/
500 
+/* Module private work area                                   */
501 
+/*------------------------------------------------------------*/
502 
+/* Remark: Uninitialized variables with static duration are
503 
+/  guaranteed zero/null at start-up. If not, either the linker
504 
+/  or start-up routine being used is out of ANSI-C standard.
505 
+*/
506 
+
507 
+#if _VOLUMES < 1 || _VOLUMES > 9
508 
+#error Wrong _VOLUMES setting
509 
+#endif
510 
+static FATFS *FatFs[_VOLUMES];	/* Pointer to the file system objects (logical drives) */
511 
+static WORD Fsid;				/* File system mount ID */
512 
+
513 
+#if _FS_RPATH && _VOLUMES >= 2
514 
+static BYTE CurrVol;			/* Current drive */
515 
+#endif
516 
+
517 
+#if _FS_LOCK
518 
+static FILESEM Files[_FS_LOCK];	/* Open object lock semaphores */
519 
+#endif
520 
+
521 
+#if _USE_LFN == 0			/* Non LFN feature */
522 
+#define	DEFINE_NAMEBUF		BYTE sfn[12]
523 
+#define INIT_BUF(dobj)		(dobj).fn = sfn
524 
+#define	FREE_BUF()
525 
+#else
526 
+#if _MAX_LFN < 12 || _MAX_LFN > 255
527 
+#error Wrong _MAX_LFN setting
528 
+#endif
529 
+#if _USE_LFN == 1			/* LFN feature with static working buffer */
530 
+static WCHAR LfnBuf[_MAX_LFN + 1];
531 
+#define	DEFINE_NAMEBUF		BYTE sfn[12]
532 
+#define INIT_BUF(dobj)		{ (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
533 
+#define	FREE_BUF()
534 
+#elif _USE_LFN == 2 		/* LFN feature with dynamic working buffer on the stack */
535 
+#define	DEFINE_NAMEBUF		BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
536 
+#define INIT_BUF(dobj)		{ (dobj).fn = sfn; (dobj).lfn = lbuf; }
537 
+#define	FREE_BUF()
538 
+#elif _USE_LFN == 3 		/* LFN feature with dynamic working buffer on the heap */
539 
+#define	DEFINE_NAMEBUF		BYTE sfn[12]; WCHAR *lfn
540 
+#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; }
541 
+#define	FREE_BUF()			ff_memfree(lfn)
542 
+#else
543 
+#error Wrong _USE_LFN setting
544 
+#endif
545 
+#endif
546 
+
547 
+#ifdef _EXCVT
548 
+static const BYTE ExCvt[] = _EXCVT;	/* Upper conversion table for extended characters */
549 
+#endif
550 
+
551 
+
552 
+
553 
+
554 
+
555 
+
556 
+/*--------------------------------------------------------------------------
557 
+
558 
+   Module Private Functions
559 
+
560 
+---------------------------------------------------------------------------*/
561 
+DWORD clust2sect (FATFS* fs, DWORD clst);
562 
+DWORD get_fat (FATFS* fs,	DWORD clst);
563 
+
564 
+#if !_FS_READONLY
565 
+FRESULT put_fat (FATFS* fs,	DWORD clst,	DWORD val);
566 
+#endif /* !_FS_READONLY */
567 
+
568 
+#if _USE_LFN
569 
+static void gen_numname (BYTE* dst, const BYTE* src, const WCHAR* lfn, UINT seq);
570 
+#endif /* !_USE_LFN */
571 
+
572 
+
573 
+
574 
+/*-----------------------------------------------------------------------*/
575 
+/* String functions                                                      */
576 
+/*-----------------------------------------------------------------------*/
577 
+
578 
+/* Copy memory to memory */
579 
+static
580 
+void mem_cpy (void* dst, const void* src, UINT cnt) {
581 
+	BYTE *d = (BYTE*)dst;
582 
+	const BYTE *s = (const BYTE*)src;
583 
+
584 
+#if _WORD_ACCESS == 1
585 
+	while (cnt >= sizeof (int)) {
586 
+		*(int*)d = *(int*)s;
587 
+		d += sizeof (int); s += sizeof (int);
588 
+		cnt -= sizeof (int);
589 
+	}
590 
+#endif
591 
+	while (cnt--)
592 
+		*d++ = *s++;
593 
+}
594 
+
595 
+/* Fill memory */
596 
+static
597 
+void mem_set (void* dst, int val, UINT cnt) {
598 
+	BYTE *d = (BYTE*)dst;
599 
+
600 
+	while (cnt--)
601 
+		*d++ = (BYTE)val;
602 
+}
603 
+
604 
+/* Compare memory to memory */
605 
+static
606 
+int mem_cmp (const void* dst, const void* src, UINT cnt) {
607 
+	const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
608 
+	int r = 0;
609 
+
610 
+	while (cnt-- && (r = *d++ - *s++) == 0) ;
611 
+	return r;
612 
+}
613 
+
614 
+/* Check if chr is contained in the string */
615 
+static
616 
+int chk_chr (const char* str, int chr) {
617 
+	while (*str && *str != chr) str++;
618 
+	return *str;
619 
+}
620 
+
621 
+
622 
+
623 
+
624 
+/*-----------------------------------------------------------------------*/
625 
+/* Request/Release grant to access the volume                            */
626 
+/*-----------------------------------------------------------------------*/
627 
+#if _FS_REENTRANT
628 
+static
629 
+int lock_fs (
630 
+	FATFS* fs		/* File system object */
631 
+)
632 
+{
633 
+	return ff_req_grant(fs->sobj);
634 
+}
635 
+
636 
+
637 
+static
638 
+void unlock_fs (
639 
+	FATFS* fs,		/* File system object */
640 
+	FRESULT res		/* Result code to be returned */
641 
+)
642 
+{
643 
+	if (fs &&
644 
+		res != FR_NOT_ENABLED &&
645 
+		res != FR_INVALID_DRIVE &&
646 
+		res != FR_INVALID_OBJECT &&
647 
+		res != FR_TIMEOUT) {
648 
+		ff_rel_grant(fs->sobj);
649 
+	}
650 
+}
651 
+#endif
652 
+
653 
+
654 
+
655 
+
656 
+/*-----------------------------------------------------------------------*/
657 
+/* File lock control functions                                           */
658 
+/*-----------------------------------------------------------------------*/
659 
+#if _FS_LOCK
660 
+
661 
+static
662 
+FRESULT chk_lock (	/* Check if the file can be accessed */
663 
+	DIR* dp,		/* Directory object pointing the file to be checked */
664 
+	int acc			/* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
665 
+)
666 
+{
667 
+	UINT i, be;
668 
+
669 
+	/* Search file semaphore table */
670 
+	for (i = be = 0; i < _FS_LOCK; i++) {
671 
+		if (Files[i].fs) {	/* Existing entry */
672 
+			if (Files[i].fs == dp->fs &&	 	/* Check if the object matched with an open object */
673 
+				Files[i].clu == dp->sclust &&
674 
+				Files[i].idx == dp->index) break;
675 
+		} else {			/* Blank entry */
676 
+			be = 1;
677 
+		}
678 
+	}
679 
+	if (i == _FS_LOCK)	/* The object is not opened */
680 
+		return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES;	/* Is there a blank entry for new object? */
681 
+
682 
+	/* The object has been opened. Reject any open against writing file and all write mode open */
683 
+	return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
684 
+}
685 
+
686 
+
687 
+static
688 
+int enq_lock (void)	/* Check if an entry is available for a new object */
689 
+{
690 
+	UINT i;
691 
+
692 
+	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
693 
+	return (i == _FS_LOCK) ? 0 : 1;
694 
+}
695 
+
696 
+
697 
+static
698 
+UINT inc_lock (	/* Increment object open counter and returns its index (0:Internal error) */
699 
+	DIR* dp,	/* Directory object pointing the file to register or increment */
700 
+	int acc		/* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
701 
+)
702 
+{
703 
+	UINT i;
704 
+
705 
+
706 
+	for (i = 0; i < _FS_LOCK; i++) {	/* Find the object */
707 
+		if (Files[i].fs == dp->fs &&
708 
+			Files[i].clu == dp->sclust &&
709 
+			Files[i].idx == dp->index) break;
710 
+	}
711 
+
712 
+	if (i == _FS_LOCK) {				/* Not opened. Register it as new. */
713 
+		for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
714 
+		if (i == _FS_LOCK) return 0;	/* No free entry to register (int err) */
715 
+		Files[i].fs = dp->fs;
716 
+		Files[i].clu = dp->sclust;
717 
+		Files[i].idx = dp->index;
718 
+		Files[i].ctr = 0;
719 
+	}
720 
+
721 
+	if (acc && Files[i].ctr) return 0;	/* Access violation (int err) */
722 
+
723 
+	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1;	/* Set semaphore value */
724 
+
725 
+	return i + 1;
726 
+}
727 
+
728 
+
729 
+static
730 
+FRESULT dec_lock (	/* Decrement object open counter */
731 
+	UINT i			/* Semaphore index (1..) */
732 
+)
733 
+{
734 
+	WORD n;
735 
+	FRESULT res;
736 
+
737 
+
738 
+	if (--i < _FS_LOCK) {	/* Shift index number origin from 0 */
739 
+		n = Files[i].ctr;
740 
+		if (n == 0x100) n = 0;		/* If write mode open, delete the entry */
741 
+		if (n) n--;					/* Decrement read mode open count */
742 
+		Files[i].ctr = n;
743 
+		if (!n) Files[i].fs = 0;	/* Delete the entry if open count gets zero */
744 
+		res = FR_OK;
745 
+	} else {
746 
+		res = FR_INT_ERR;			/* Invalid index nunber */
747 
+	}
748 
+	return res;
749 
+}
750 
+
751 
+
752 
+static
753 
+void clear_lock (	/* Clear lock entries of the volume */
754 
+	FATFS *fs
755 
+)
756 
+{
757 
+	UINT i;
758 
+
759 
+	for (i = 0; i < _FS_LOCK; i++) {
760 
+		if (Files[i].fs == fs) Files[i].fs = 0;
761 
+	}
762 
+}
763 
+#endif
764 
+
765 
+
766 
+
767 
+
768 
+/*-----------------------------------------------------------------------*/
769 
+/* Move/Flush disk access window in the file system object               */
770 
+/*-----------------------------------------------------------------------*/
771 
+#if !_FS_READONLY
772 
+static
773 
+FRESULT sync_window (
774 
+	FATFS* fs		/* File system object */
775 
+)
776 
+{
777 
+	DWORD wsect;
778 
+	UINT nf;
779 
+	FRESULT res = FR_OK;
780 
+
781 
+
782 
+	if (fs->wflag) {	/* Write back the sector if it is dirty */
783 
+		wsect = fs->winsect;	/* Current sector number */
784 
+		if (disk_write(fs->drv, fs->win.d8, wsect, 1) != RES_OK) {
785 
+			res = FR_DISK_ERR;
786 
+		} else {
787 
+			fs->wflag = 0;
788 
+			if (wsect - fs->fatbase < fs->fsize) {		/* Is it in the FAT area? */
789 
+				for (nf = fs->n_fats; nf >= 2; nf--) {	/* Reflect the change to all FAT copies */
790 
+					wsect += fs->fsize;
791 
+					disk_write(fs->drv, fs->win.d8, wsect, 1);
792 
+				}
793 
+			}
794 
+		}
795 
+	}
796 
+	return res;
797 
+}
798 
+#endif
799 
+
800 
+
801 
+static
802 
+FRESULT move_window (
803 
+	FATFS* fs,		/* File system object */
804 
+	DWORD sector	/* Sector number to make appearance in the fs->win[].d8 */
805 
+)
806 
+{
807 
+	FRESULT res = FR_OK;
808 
+
809 
+
810 
+	if (sector != fs->winsect) {	/* Window offset changed? */
811 
+#if !_FS_READONLY
812 
+		res = sync_window(fs);		/* Write-back changes */
813 
+#endif
814 
+		if (res == FR_OK) {			/* Fill sector window with new data */
815 
+			if (disk_read(fs->drv, fs->win.d8, sector, 1) != RES_OK) {
816 
+				sector = 0xFFFFFFFF;	/* Invalidate window if data is not reliable */
817 
+				res = FR_DISK_ERR;
818 
+			}
819 
+			fs->winsect = sector;
820 
+		}
821 
+	}
822 
+	return res;
823 
+}
824 
+
825 
+
826 
+
827 
+
828 
+/*-----------------------------------------------------------------------*/
829 
+/* Synchronize file system and strage device                             */
830 
+/*-----------------------------------------------------------------------*/
831 
+#if !_FS_READONLY
832 
+static
833 
+FRESULT sync_fs (	/* FR_OK: successful, FR_DISK_ERR: failed */
834 
+	FATFS* fs		/* File system object */
835 
+)
836 
+{
837 
+	FRESULT res;
838 
+
839 
+
840 
+	res = sync_window(fs);
841 
+	if (res == FR_OK) {
842 
+		/* Update FSINFO sector if needed */
843 
+		if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
844 
+			/* Create FSINFO structure */
845 
+			mem_set(fs->win.d8, 0, SS(fs));
846 
+			ST_WORD(fs->win.d8 + BS_55AA, 0xAA55);
847 
+			ST_DWORD(fs->win.d8 + FSI_LeadSig, 0x41615252);
848 
+			ST_DWORD(fs->win.d8 + FSI_StrucSig, 0x61417272);
849 
+			ST_DWORD(fs->win.d8 + FSI_Free_Count, fs->free_clust);
850 
+			ST_DWORD(fs->win.d8 + FSI_Nxt_Free, fs->last_clust);
851 
+			/* Write it into the FSINFO sector */
852 
+			fs->winsect = fs->volbase + 1;
853 
+			disk_write(fs->drv, fs->win.d8, fs->winsect, 1);
854 
+			fs->fsi_flag = 0;
855 
+		}
856 
+		/* Make sure that no pending write process in the physical drive */
857 
+		if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
858 
+			res = FR_DISK_ERR;
859 
+	}
860 
+
861 
+	return res;
862 
+}
863 
+#endif
864 
+
865 
+
866 
+
867 
+
868 
+/*-----------------------------------------------------------------------*/
869 
+/* Get sector# from cluster#                                             */
870 
+/*-----------------------------------------------------------------------*/
871 
+/* Hidden API for hacks and disk tools */
872 
+
873 
+DWORD clust2sect (	/* !=0: Sector number, 0: Failed - invalid cluster# */
874 
+	FATFS* fs,		/* File system object */
875 
+	DWORD clst		/* Cluster# to be converted */
876 
+)
877 
+{
878 
+	clst -= 2;
879 
+	if (clst >= fs->n_fatent - 2) return 0;		/* Invalid cluster# */
880 
+	return clst * fs->csize + fs->database;
881 
+}
882 
+
883 
+
884 
+
885 
+
886 
+/*-----------------------------------------------------------------------*/
887 
+/* FAT access - Read value of a FAT entry                                */
888 
+/*-----------------------------------------------------------------------*/
889 
+/* Hidden API for hacks and disk tools */
890 
+
891 
+DWORD get_fat (	/* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
892 
+	FATFS* fs,	/* File system object */
893 
+	DWORD clst	/* FAT index number (cluster number) to get the value */
894 
+)
895 
+{
896 
+	UINT wc, bc;
897 
+	BYTE *p;
898 
+	DWORD val;
899 
+
900 
+
901 
+	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */
902 
+		val = 1;	/* Internal error */
903 
+
904 
+	} else {
905 
+		val = 0xFFFFFFFF;	/* Default value falls on disk error */
906 
+
907 
+		switch (fs->fs_type) {
908 
+		case FS_FAT12 :
909 
+			bc = (UINT)clst; bc += bc / 2;
910 
+			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
911 
+			wc = fs->win.d8[bc++ % SS(fs)];
912 
+			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
913 
+			wc |= fs->win.d8[bc % SS(fs)] << 8;
914 
+			val = clst & 1 ? wc >> 4 : (wc & 0xFFF);
915 
+			break;
916 
+
917 
+		case FS_FAT16 :
918 
+			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
919 
+			p = &fs->win.d8[clst * 2 % SS(fs)];
920 
+			val = LD_WORD(p);
921 
+			break;
922 
+
923 
+		case FS_FAT32 :
924 
+			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
925 
+			p = &fs->win.d8[clst * 4 % SS(fs)];
926 
+			val = LD_DWORD(p) & 0x0FFFFFFF;
927 
+			break;
928 
+
929 
+		default:
930 
+			val = 1;	/* Internal error */
931 
+		}
932 
+	}
933 
+
934 
+	return val;
935 
+}
936 
+
937 
+
938 
+
939 
+
940 
+/*-----------------------------------------------------------------------*/
941 
+/* FAT access - Change value of a FAT entry                              */
942 
+/*-----------------------------------------------------------------------*/
943 
+/* Hidden API for hacks and disk tools */
944 
+
945 
+#if !_FS_READONLY
946 
+FRESULT put_fat (
947 
+	FATFS* fs,	/* File system object */
948 
+	DWORD clst,	/* FAT index number (cluster number) to be changed */
949 
+	DWORD val	/* New value to be set to the entry */
950 
+)
951 
+{
952 
+	UINT bc;
953 
+	BYTE *p;
954 
+	FRESULT res;
955 
+
956 
+
957 
+	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */
958 
+		res = FR_INT_ERR;
959 
+
960 
+	} else {
961 
+		switch (fs->fs_type) {
962 
+		case FS_FAT12 :
963 
+			bc = (UINT)clst; bc += bc / 2;
964 
+			res = move_window(fs, fs->fatbase + (bc / SS(fs)));
965 
+			if (res != FR_OK) break;
966 
+			p = &fs->win.d8[bc++ % SS(fs)];
967 
+			*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
968 
+			fs->wflag = 1;
969 
+			res = move_window(fs, fs->fatbase + (bc / SS(fs)));
970 
+			if (res != FR_OK) break;
971 
+			p = &fs->win.d8[bc % SS(fs)];
972 
+			*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
973 
+			fs->wflag = 1;
974 
+			break;
975 
+
976 
+		case FS_FAT16 :
977 
+			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
978 
+			if (res != FR_OK) break;
979 
+			p = &fs->win.d8[clst * 2 % SS(fs)];
980 
+			ST_WORD(p, (WORD)val);
981 
+			fs->wflag = 1;
982 
+			break;
983 
+
984 
+		case FS_FAT32 :
985 
+			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
986 
+			if (res != FR_OK) break;
987 
+			p = &fs->win.d8[clst * 4 % SS(fs)];
988 
+			val |= LD_DWORD(p) & 0xF0000000;
989 
+			ST_DWORD(p, val);
990 
+			fs->wflag = 1;
991 
+			break;
992 
+
993 
+		default :
994 
+			res = FR_INT_ERR;
995 
+		}
996 
+	}
997 
+
998 
+	return res;
999 
+}
1000 
+#endif /* !_FS_READONLY */
1001 
+
1002 
+
1003 
+
1004 
+
1005 
+/*-----------------------------------------------------------------------*/
1006 
+/* FAT handling - Remove a cluster chain                                 */
1007 
+/*-----------------------------------------------------------------------*/
1008 
+#if !_FS_READONLY
1009 
+static
1010 
+FRESULT remove_chain (
1011 
+	FATFS* fs,			/* File system object */
1012 
+	DWORD clst			/* Cluster# to remove a chain from */
1013 
+)
1014 
+{
1015 
+	FRESULT res;
1016 
+	DWORD nxt;
1017 
+#if _USE_TRIM
1018 
+	DWORD scl = clst, ecl = clst, rt[2];
1019 
+#endif
1020 
+
1021 
+	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */
1022 
+		res = FR_INT_ERR;
1023 
+
1024 
+	} else {
1025 
+		res = FR_OK;
1026 
+		while (clst < fs->n_fatent) {			/* Not a last link? */
1027 
+			nxt = get_fat(fs, clst);			/* Get cluster status */
1028 
+			if (nxt == 0) break;				/* Empty cluster? */
1029 
+			if (nxt == 1) { res = FR_INT_ERR; break; }	/* Internal error? */
1030 
+			if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }	/* Disk error? */
1031 
+			res = put_fat(fs, clst, 0);			/* Mark the cluster "empty" */
1032 
+			if (res != FR_OK) break;
1033 
+			if (fs->free_clust != 0xFFFFFFFF) {	/* Update FSINFO */
1034 
+				fs->free_clust++;
1035 
+				fs->fsi_flag |= 1;
1036 
+			}
1037 
+#if _USE_TRIM
1038 
+			if (ecl + 1 == nxt) {	/* Is next cluster contiguous? */
1039 
+				ecl = nxt;
1040 
+			} else {				/* End of contiguous clusters */
1041 
+				rt[0] = clust2sect(fs, scl);					/* Start sector */
1042 
+				rt[1] = clust2sect(fs, ecl) + fs->csize - 1;	/* End sector */
1043 
+				disk_ioctl(fs->drv, CTRL_TRIM, rt);				/* Erase the block */
1044 
+				scl = ecl = nxt;
1045 
+			}
1046 
+#endif
1047 
+			clst = nxt;	/* Next cluster */
1048 
+		}
1049 
+	}
1050 
+
1051 
+	return res;
1052 
+}
1053 
+#endif
1054 
+
1055 
+
1056 
+
1057 
+
1058 
+/*-----------------------------------------------------------------------*/
1059 
+/* FAT handling - Stretch or Create a cluster chain                      */
1060 
+/*-----------------------------------------------------------------------*/
1061 
+#if !_FS_READONLY
1062 
+static
1063 
+DWORD create_chain (	/* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
1064 
+	FATFS* fs,			/* File system object */
1065 
+	DWORD clst			/* Cluster# to stretch. 0 means create a new chain. */
1066 
+)
1067 
+{
1068 
+	DWORD cs, ncl, scl;
1069 
+	FRESULT res;
1070 
+
1071 
+
1072 
+	if (clst == 0) {		/* Create a new chain */
1073 
+		scl = fs->last_clust;			/* Get suggested start point */
1074 
+		if (!scl || scl >= fs->n_fatent) scl = 1;
1075 
+	}
1076 
+	else {					/* Stretch the current chain */
1077 
+		cs = get_fat(fs, clst);			/* Check the cluster status */
1078 
+		if (cs < 2) return 1;			/* Invalid value */
1079 
+		if (cs == 0xFFFFFFFF) return cs;	/* A disk error occurred */
1080 
+		if (cs < fs->n_fatent) return cs;	/* It is already followed by next cluster */
1081 
+		scl = clst;
1082 
+	}
1083 
+
1084 
+	ncl = scl;				/* Start cluster */
1085 
+	for (;;) {
1086 
+		ncl++;							/* Next cluster */
1087 
+		if (ncl >= fs->n_fatent) {		/* Check wrap around */
1088 
+			ncl = 2;
1089 
+			if (ncl > scl) return 0;	/* No free cluster */
1090 
+		}
1091 
+		cs = get_fat(fs, ncl);			/* Get the cluster status */
1092 
+		if (cs == 0) break;				/* Found a free cluster */
1093 
+		if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
1094 
+			return cs;
1095 
+		if (ncl == scl) return 0;		/* No free cluster */
1096 
+	}
1097 
+
1098 
+	res = put_fat(fs, ncl, 0x0FFFFFFF);	/* Mark the new cluster "last link" */
1099 
+	if (res == FR_OK && clst != 0) {
1100 
+		res = put_fat(fs, clst, ncl);	/* Link it to the previous one if needed */
1101 
+	}
1102 
+	if (res == FR_OK) {
1103 
+		fs->last_clust = ncl;			/* Update FSINFO */
1104 
+		if (fs->free_clust != 0xFFFFFFFF) {
1105 
+			fs->free_clust--;
1106 
+			fs->fsi_flag |= 1;
1107 
+		}
1108 
+	} else {
1109 
+		ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
1110 
+	}
1111 
+
1112 
+	return ncl;		/* Return new cluster number or error code */
1113 
+}
1114 
+#endif /* !_FS_READONLY */
1115 
+
1116 
+
1117 
+
1118 
+
1119 
+/*-----------------------------------------------------------------------*/
1120 
+/* FAT handling - Convert offset into cluster with link map table        */
1121 
+/*-----------------------------------------------------------------------*/
1122 
+
1123 
+#if _USE_FASTSEEK
1124 
+static
1125 
+DWORD clmt_clust (	/* <2:Error, >=2:Cluster number */
1126 
+	FIL* fp,		/* Pointer to the file object */
1127 
+	DWORD ofs		/* File offset to be converted to cluster# */
1128 
+)
1129 
+{
1130 
+	DWORD cl, ncl, *tbl;
1131 
+
1132 
+
1133 
+	tbl = fp->cltbl + 1;	/* Top of CLMT */
1134 
+	cl = ofs / SS(fp->fs) / fp->fs->csize;	/* Cluster order from top of the file */
1135 
+	for (;;) {
1136 
+		ncl = *tbl++;			/* Number of cluters in the fragment */
1137 
+		if (!ncl) return 0;		/* End of table? (error) */
1138 
+		if (cl < ncl) break;	/* In this fragment? */
1139 
+		cl -= ncl; tbl++;		/* Next fragment */
1140 
+	}
1141 
+	return cl + *tbl;	/* Return the cluster number */
1142 
+}
1143 
+#endif	/* _USE_FASTSEEK */
1144 
+
1145 
+
1146 
+
1147 
+
1148 
+/*-----------------------------------------------------------------------*/
1149 
+/* Directory handling - Set directory index                              */
1150 
+/*-----------------------------------------------------------------------*/
1151 
+
1152 
+static
1153 
+FRESULT dir_sdi (
1154 
+	DIR* dp,		/* Pointer to directory object */
1155 
+	UINT idx		/* Index of directory table */
1156 
+)
1157 
+{
1158 
+	DWORD clst, sect;
1159 
+	UINT ic;
1160 
+
1161 
+
1162 
+	dp->index = (WORD)idx;	/* Current index */
1163 
+	clst = dp->sclust;		/* Table start cluster (0:root) */
1164 
+	if (clst == 1 || clst >= dp->fs->n_fatent)	/* Check start cluster range */
1165 
+		return FR_INT_ERR;
1166 
+	if (!clst && dp->fs->fs_type == FS_FAT32)	/* Replace cluster# 0 with root cluster# if in FAT32 */
1167 
+		clst = dp->fs->dirbase;
1168 
+
1169 
+	if (clst == 0) {	/* Static table (root-directory in FAT12/16) */
1170 
+		if (idx >= dp->fs->n_rootdir)	/* Is index out of range? */
1171 
+			return FR_INT_ERR;
1172 
+		sect = dp->fs->dirbase;
1173 
+	}
1174 
+	else {				/* Dynamic table (root-directory in FAT32 or sub-directory) */
1175 
+		ic = SS(dp->fs) / SZ_DIRE * dp->fs->csize;	/* Entries per cluster */
1176 
+		while (idx >= ic) {	/* Follow cluster chain */
1177 
+			clst = get_fat(dp->fs, clst);				/* Get next cluster */
1178 
+			if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */
1179 
+			if (clst < 2 || clst >= dp->fs->n_fatent)	/* Reached to end of table or internal error */
1180 
+				return FR_INT_ERR;
1181 
+			idx -= ic;
1182 
+		}
1183 
+		sect = clust2sect(dp->fs, clst);
1184 
+	}
1185 
+	dp->clust = clst;	/* Current cluster# */
1186 
+	if (!sect) return FR_INT_ERR;
1187 
+	dp->sect = sect + idx / (SS(dp->fs) / SZ_DIRE);					/* Sector# of the directory entry */
1188 
+	dp->dir = dp->fs->win.d8 + (idx % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE;	/* Ptr to the entry in the sector */
1189 
+
1190 
+	return FR_OK;
1191 
+}
1192 
+
1193 
+
1194 
+
1195 
+
1196 
+/*-----------------------------------------------------------------------*/
1197 
+/* Directory handling - Move directory table index next                  */
1198 
+/*-----------------------------------------------------------------------*/
1199 
+
1200 
+static
1201 
+FRESULT dir_next (	/* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
1202 
+	DIR* dp,		/* Pointer to the directory object */
1203 
+	int stretch		/* 0: Do not stretch table, 1: Stretch table if needed */
1204 
+)
1205 
+{
1206 
+	DWORD clst;
1207 
+	UINT i;
1208 
+#if !_FS_READONLY
1209 
+	UINT c;
1210 
+#endif
1211 
+
1212 
+
1213 
+	i = dp->index + 1;
1214 
+	if (!(i & 0xFFFF) || !dp->sect)	/* Report EOT when index has reached 65535 */
1215 
+		return FR_NO_FILE;
1216 
+
1217 
+	if (!(i % (SS(dp->fs) / SZ_DIRE))) {	/* Sector changed? */
1218 
+		dp->sect++;					/* Next sector */
1219 
+
1220 
+		if (!dp->clust) {		/* Static table */
1221 
+			if (i >= dp->fs->n_rootdir)	/* Report EOT if it reached end of static table */
1222 
+				return FR_NO_FILE;
1223 
+		}
1224 
+		else {					/* Dynamic table */
1225 
+			if (((i / (SS(dp->fs) / SZ_DIRE)) & (dp->fs->csize - 1)) == 0) {	/* Cluster changed? */
1226 
+				clst = get_fat(dp->fs, dp->clust);				/* Get next cluster */
1227 
+				if (clst <= 1) return FR_INT_ERR;
1228 
+				if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
1229 
+				if (clst >= dp->fs->n_fatent) {					/* If it reached end of dynamic table, */
1230 
+#if !_FS_READONLY
1231 
+					if (!stretch) return FR_NO_FILE;			/* If do not stretch, report EOT */
1232 
+					clst = create_chain(dp->fs, dp->clust);		/* Stretch cluster chain */
1233 
+					if (clst == 0) return FR_DENIED;			/* No free cluster */
1234 
+					if (clst == 1) return FR_INT_ERR;
1235 
+					if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
1236 
+					/* Clean-up stretched table */
1237 
+					if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */
1238 
+					mem_set(dp->fs->win.d8, 0, SS(dp->fs));		/* Clear window buffer */
1239 
+					dp->fs->winsect = clust2sect(dp->fs, clst);	/* Cluster start sector */
1240 
+					for (c = 0; c < dp->fs->csize; c++) {		/* Fill the new cluster with 0 */
1241 
+						dp->fs->wflag = 1;
1242 
+						if (sync_window(dp->fs)) return FR_DISK_ERR;
1243 
+						dp->fs->winsect++;
1244 
+					}
1245 
+					dp->fs->winsect -= c;						/* Rewind window offset */
1246 
+#else
1247 
+					if (!stretch) return FR_NO_FILE;			/* If do not stretch, report EOT (this is to suppress warning) */
1248 
+					return FR_NO_FILE;							/* Report EOT */
1249 
+#endif
1250 
+				}
1251 
+				dp->clust = clst;				/* Initialize data for new cluster */
1252 
+				dp->sect = clust2sect(dp->fs, clst);
1253 
+			}
1254 
+		}
1255 
+	}
1256 
+
1257 
+	dp->index = (WORD)i;	/* Current index */
1258 
+	dp->dir = dp->fs->win.d8 + (i % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE;	/* Current entry in the window */
1259 
+
1260 
+	return FR_OK;
1261 
+}
1262 
+
1263 
+
1264 
+
1265 
+
1266 
+/*-----------------------------------------------------------------------*/
1267 
+/* Directory handling - Reserve directory entry                          */
1268 
+/*-----------------------------------------------------------------------*/
1269 
+
1270 
+#if !_FS_READONLY
1271 
+static
1272 
+FRESULT dir_alloc (
1273 
+	DIR* dp,	/* Pointer to the directory object */
1274 
+	UINT nent	/* Number of contiguous entries to allocate (1-21) */
1275 
+)
1276 
+{
1277 
+	FRESULT res;
1278 
+	UINT n;
1279 
+
1280 
+
1281 
+	res = dir_sdi(dp, 0);
1282 
+	if (res == FR_OK) {
1283 
+		n = 0;
1284 
+		do {
1285 
+			res = move_window(dp->fs, dp->sect);
1286 
+			if (res != FR_OK) break;
1287 
+			if (dp->dir[0] == DDEM || dp->dir[0] == 0) {	/* Is it a free entry? */
1288 
+				if (++n == nent) break;	/* A block of contiguous free entries is found */
1289 
+			} else {
1290 
+				n = 0;					/* Not a blank entry. Restart to search */
1291 
+			}
1292 
+			res = dir_next(dp, 1);		/* Next entry with table stretch enabled */
1293 
+		} while (res == FR_OK);
1294 
+	}
1295 
+	if (res == FR_NO_FILE) res = FR_DENIED;	/* No directory entry to allocate */
1296 
+	return res;
1297 
+}
1298 
+#endif
1299 
+
1300 
+
1301 
+
1302 
+
1303 
+/*-----------------------------------------------------------------------*/
1304 
+/* Directory handling - Load/Store start cluster number                  */
1305 
+/*-----------------------------------------------------------------------*/
1306 
+
1307 
+static
1308 
+DWORD ld_clust (
1309 
+	FATFS* fs,	/* Pointer to the fs object */
1310 
+	BYTE* dir	/* Pointer to the directory entry */
1311 
+)
1312 
+{
1313 
+	DWORD cl;
1314 
+
1315 
+	cl = LD_WORD(dir + DIR_FstClusLO);
1316 
+	if (fs->fs_type == FS_FAT32)
1317 
+		cl |= (DWORD)LD_WORD(dir + DIR_FstClusHI) << 16;
1318 
+
1319 
+	return cl;
1320 
+}
1321 
+
1322 
+
1323 
+#if !_FS_READONLY
1324 
+static
1325 
+void st_clust (
1326 
+	BYTE* dir,	/* Pointer to the directory entry */
1327 
+	DWORD cl	/* Value to be set */
1328 
+)
1329 
+{
1330 
+	ST_WORD(dir + DIR_FstClusLO, cl);
1331 
+	ST_WORD(dir + DIR_FstClusHI, cl >> 16);
1332 
+}
1333 
+#endif
1334 
+
1335 
+
1336 
+
1337 
+
1338 
+/*-----------------------------------------------------------------------*/
1339 
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry   */
1340 
+/*-----------------------------------------------------------------------*/
1341 
+#if _USE_LFN
1342 
+static
1343 
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};	/* Offset of LFN characters in the directory entry */
1344 
+
1345 
+
1346 
+static
1347 
+int cmp_lfn (			/* 1:Matched, 0:Not matched */
1348 
+	WCHAR* lfnbuf,		/* Pointer to the LFN to be compared */
1349 
+	BYTE* dir			/* Pointer to the directory entry containing a part of LFN */
1350 
+)
1351 
+{
1352 
+	UINT i, s;
1353 
+	WCHAR wc, uc;
1354 
+
1355 
+
1356 
+	i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13;	/* Get offset in the LFN buffer */
1357 
+	s = 0; wc = 1;
1358 
+	do {
1359 
+		uc = LD_WORD(dir + LfnOfs[s]);	/* Pick an LFN character from the entry */
1360 
+		if (wc) {	/* Last character has not been processed */
1361 
+			wc = ff_wtoupper(uc);		/* Convert it to upper case */
1362 
+			if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++]))	/* Compare it */
1363 
+				return 0;				/* Not matched */
1364 
+		} else {
1365 
+			if (uc != 0xFFFF) return 0;	/* Check filler */
1366 
+		}
1367 
+	} while (++s < 13);				/* Repeat until all characters in the entry are checked */
1368 
+
1369 
+	if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i])	/* Last segment matched but different length */
1370 
+		return 0;
1371 
+
1372 
+	return 1;						/* The part of LFN matched */
1373 
+}
1374 
+
1375 
+
1376 
+
1377 
+static
1378 
+int pick_lfn (			/* 1:Succeeded, 0:Buffer overflow */
1379 
+	WCHAR* lfnbuf,		/* Pointer to the Unicode-LFN buffer */
1380 
+	BYTE* dir			/* Pointer to the directory entry */
1381 
+)
1382 
+{
1383 
+	UINT i, s;
1384 
+	WCHAR wc, uc;
1385 
+
1386 
+
1387 
+	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;	/* Offset in the LFN buffer */
1388 
+
1389 
+	s = 0; wc = 1;
1390 
+	do {
1391 
+		uc = LD_WORD(dir + LfnOfs[s]);		/* Pick an LFN character from the entry */
1392 
+		if (wc) {	/* Last character has not been processed */
1393 
+			if (i >= _MAX_LFN) return 0;	/* Buffer overflow? */
1394 
+			lfnbuf[i++] = wc = uc;			/* Store it */
1395 
+		} else {
1396 
+			if (uc != 0xFFFF) return 0;		/* Check filler */
1397 
+		}
1398 
+	} while (++s < 13);						/* Read all character in the entry */
1399 
+
1400 
+	if (dir[LDIR_Ord] & LLEF) {				/* Put terminator if it is the last LFN part */
1401 
+		if (i >= _MAX_LFN) return 0;		/* Buffer overflow? */
1402 
+		lfnbuf[i] = 0;
1403 
+	}
1404 
+
1405 
+	return 1;
1406 
+}
1407 
+
1408 
+
1409 
+#if !_FS_READONLY
1410 
+static
1411 
+void fit_lfn (
1412 
+	const WCHAR* lfnbuf,	/* Pointer to the LFN buffer */
1413 
+	BYTE* dir,				/* Pointer to the directory entry */
1414 
+	BYTE ord,				/* LFN order (1-20) */
1415 
+	BYTE sum				/* SFN sum */
1416 
+)
1417 
+{
1418 
+	UINT i, s;
1419 
+	WCHAR wc;
1420 
+
1421 
+
1422 
+	dir[LDIR_Chksum] = sum;			/* Set check sum */
1423 
+	dir[LDIR_Attr] = AM_LFN;		/* Set attribute. LFN entry */
1424 
+	dir[LDIR_Type] = 0;
1425 
+	ST_WORD(dir + LDIR_FstClusLO, 0);
1426 
+
1427 
+	i = (ord - 1) * 13;				/* Get offset in the LFN buffer */
1428 
+	s = wc = 0;
1429 
+	do {
1430 
+		if (wc != 0xFFFF) wc = lfnbuf[i++];	/* Get an effective character */
1431 
+		ST_WORD(dir+LfnOfs[s], wc);	/* Put it */
1432 
+		if (!wc) wc = 0xFFFF;		/* Padding characters following last character */
1433 
+	} while (++s < 13);
1434 
+	if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLEF;	/* Bottom LFN part is the start of LFN sequence */
1435 
+	dir[LDIR_Ord] = ord;			/* Set the LFN order */
1436 
+}
1437 
+
1438 
+#endif
1439 
+#endif
1440 
+
1441 
+
1442 
+
1443 
+
1444 
+/*-----------------------------------------------------------------------*/
1445 
+/* Create numbered name                                                  */
1446 
+/*-----------------------------------------------------------------------*/
1447 
+#if _USE_LFN
1448 
+static
1449 
+void gen_numname (
1450 
+	BYTE* dst,			/* Pointer to the buffer to store numbered SFN */
1451 
+	const BYTE* src,	/* Pointer to SFN */
1452 
+	const WCHAR* lfn,	/* Pointer to LFN */
1453 
+	UINT seq			/* Sequence number */
1454 
+)
1455 
+{
1456 
+	BYTE ns[8], c;
1457 
+	UINT i, j;
1458 
+	WCHAR wc;
1459 
+	DWORD sr;
1460 
+
1461 
+
1462 
+	mem_cpy(dst, src, 11);
1463 
+
1464 
+	if (seq > 5) {	/* On many collisions, generate a hash number instead of sequential number */
1465 
+		sr = seq;
1466 
+		while (*lfn) {	/* Create a CRC */
1467 
+			wc = *lfn++;
1468 
+			for (i = 0; i < 16; i++) {
1469 
+				sr = (sr << 1) + (wc & 1);
1470 
+				wc >>= 1;
1471 
+				if (sr & 0x10000) sr ^= 0x11021;
1472 
+			}
1473 
+		}
1474 
+		seq = (UINT)sr;
1475 
+	}
1476 
+
1477 
+	/* itoa (hexdecimal) */
1478 
+	i = 7;
1479 
+	do {
1480 
+		c = (seq % 16) + '0';
1481 
+		if (c > '9') c += 7;
1482 
+		ns[i--] = c;
1483 
+		seq /= 16;
1484 
+	} while (seq);
1485 
+	ns[i] = '~';
1486 
+
1487 
+	/* Append the number */
1488 
+	for (j = 0; j < i && dst[j] != ' '; j++) {
1489 
+		if (IsDBCS1(dst[j])) {
1490 
+			if (j == i - 1) break;
1491 
+			j++;
1492 
+		}
1493 
+	}
1494 
+	do {
1495 
+		dst[j++] = (i < 8) ? ns[i++] : ' ';
1496 
+	} while (j < 8);
1497 
+}
1498 
+#endif
1499 
+
1500 
+
1501 
+
1502 
+
1503 
+/*-----------------------------------------------------------------------*/
1504 
+/* Calculate sum of an SFN                                               */
1505 
+/*-----------------------------------------------------------------------*/
1506 
+#if _USE_LFN
1507 
+static
1508 
+BYTE sum_sfn (
1509 
+	const BYTE* dir		/* Pointer to the SFN entry */
1510 
+)
1511 
+{
1512 
+	BYTE sum = 0;
1513 
+	UINT n = 11;
1514 
+
1515 
+	do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
1516 
+	return sum;
1517 
+}
1518 
+#endif
1519 
+
1520 
+
1521 
+
1522 
+
1523 
+/*-----------------------------------------------------------------------*/
1524 
+/* Directory handling - Find an object in the directory                  */
1525 
+/*-----------------------------------------------------------------------*/
1526 
+
1527 
+static
1528 
+FRESULT dir_find (
1529 
+	DIR* dp			/* Pointer to the directory object linked to the file name */
1530 
+)
1531 
+{
1532 
+	FRESULT res;
1533 
+	BYTE c, *dir;
1534 
+#if _USE_LFN
1535 
+	BYTE a, ord, sum;
1536 
+#endif
1537 
+
1538 
+	res = dir_sdi(dp, 0);			/* Rewind directory object */
1539 
+	if (res != FR_OK) return res;
1540 
+
1541 
+#if _USE_LFN
1542 
+	ord = sum = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */
1543 
+#endif
1544 
+	do {
1545 
+		res = move_window(dp->fs, dp->sect);
1546 
+		if (res != FR_OK) break;
1547 
+		dir = dp->dir;					/* Ptr to the directory entry of current index */
1548 
+		c = dir[DIR_Name];
1549 
+		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
1550 
+#if _USE_LFN	/* LFN configuration */
1551 
+		a = dir[DIR_Attr] & AM_MASK;
1552 
+		if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) {	/* An entry without valid data */
1553 
+			ord = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */
1554 
+		} else {
1555 
+			if (a == AM_LFN) {			/* An LFN entry is found */
1556 
+				if (dp->lfn) {
1557 
+					if (c & LLEF) {		/* Is it start of LFN sequence? */
1558 
+						sum = dir[LDIR_Chksum];
1559 
+						c &= ~LLEF; ord = c;	/* LFN start order */
1560 
+						dp->lfn_idx = dp->index;	/* Start index of LFN */
1561 
+					}
1562 
+					/* Check validity of the LFN entry and compare it with given name */
1563 
+					ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
1564 
+				}
1565 
+			} else {					/* An SFN entry is found */
1566 
+				if (!ord && sum == sum_sfn(dir)) break;	/* LFN matched? */
1567 
+				if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break;	/* SFN matched? */
1568 
+				ord = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */
1569 
+			}
1570 
+		}
1571 
+#else		/* Non LFN configuration */
1572 
+		if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */
1573 
+			break;
1574 
+#endif
1575 
+		res = dir_next(dp, 0);		/* Next entry */
1576 
+	} while (res == FR_OK);
1577 
+
1578 
+	return res;
1579 
+}
1580 
+
1581 
+
1582 
+
1583 
+
1584 
+/*-----------------------------------------------------------------------*/
1585 
+/* Read an object from the directory                                     */
1586 
+/*-----------------------------------------------------------------------*/
1587 
+#if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2
1588 
+static
1589 
+FRESULT dir_read (
1590 
+	DIR* dp,		/* Pointer to the directory object */
1591 
+	int vol			/* Filtered by 0:file/directory or 1:volume label */
1592 
+)
1593 
+{
1594 
+	FRESULT res;
1595 
+	BYTE a, c, *dir;
1596 
+#if _USE_LFN
1597 
+	BYTE ord = 0xFF, sum = 0xFF;
1598 
+#endif
1599 
+
1600 
+	res = FR_NO_FILE;
1601 
+	while (dp->sect) {
1602 
+		res = move_window(dp->fs, dp->sect);
1603 
+		if (res != FR_OK) break;
1604 
+		dir = dp->dir;					/* Ptr to the directory entry of current index */
1605 
+		c = dir[DIR_Name];
1606 
+		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
1607 
+		a = dir[DIR_Attr] & AM_MASK;
1608 
+#if _USE_LFN	/* LFN configuration */
1609 
+		if (c == DDEM || (!_FS_RPATH && c == '.') || (int)((a & ~AM_ARC) == AM_VOL) != vol) {	/* An entry without valid data */
1610 
+			ord = 0xFF;
1611 
+		} else {
1612 
+			if (a == AM_LFN) {			/* An LFN entry is found */
1613 
+				if (c & LLEF) {			/* Is it start of LFN sequence? */
1614 
+					sum = dir[LDIR_Chksum];
1615 
+					c &= ~LLEF; ord = c;
1616 
+					dp->lfn_idx = dp->index;
1617 
+				}
1618 
+				/* Check LFN validity and capture it */
1619 
+				ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
1620 
+			} else {					/* An SFN entry is found */
1621 
+				if (ord || sum != sum_sfn(dir))	/* Is there a valid LFN? */
1622 
+					dp->lfn_idx = 0xFFFF;		/* It has no LFN. */
1623 
+				break;
1624 
+			}
1625 
+		}
1626 
+#else		/* Non LFN configuration */
1627 
+		if (c != DDEM && (_FS_RPATH || c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol)	/* Is it a valid entry? */
1628 
+			break;
1629 
+#endif
1630 
+		res = dir_next(dp, 0);				/* Next entry */
1631 
+		if (res != FR_OK) break;
1632 
+	}
1633 
+
1634 
+	if (res != FR_OK) dp->sect = 0;
1635 
+
1636 
+	return res;
1637 
+}
1638 
+#endif	/* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
1639 
+
1640 
+
1641 
+
1642 
+
1643 
+/*-----------------------------------------------------------------------*/
1644 
+/* Register an object to the directory                                   */
1645 
+/*-----------------------------------------------------------------------*/
1646 
+#if !_FS_READONLY
1647 
+static
1648 
+FRESULT dir_register (	/* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
1649 
+	DIR* dp				/* Target directory with object name to be created */
1650 
+)
1651 
+{
1652 
+	FRESULT res;
1653 
+#if _USE_LFN	/* LFN configuration */
1654 
+	UINT n, nent;
1655 
+	BYTE sn[12], *fn, sum;
1656 
+	WCHAR *lfn;
1657 
+
1658 
+
1659 
+	fn = dp->fn; lfn = dp->lfn;
1660 
+	mem_cpy(sn, fn, 12);
1661 
+
1662 
+	if (_FS_RPATH && (sn[NSFLAG] & NS_DOT))		/* Cannot create dot entry */
1663 
+		return FR_INVALID_NAME;
1664 
+
1665 
+	if (sn[NSFLAG] & NS_LOSS) {			/* When LFN is out of 8.3 format, generate a numbered name */
1666 
+		fn[NSFLAG] = 0; dp->lfn = 0;			/* Find only SFN */
1667 
+		for (n = 1; n < 100; n++) {
1668 
+			gen_numname(fn, sn, lfn, n);	/* Generate a numbered name */
1669 
+			res = dir_find(dp);				/* Check if the name collides with existing SFN */
1670 
+			if (res != FR_OK) break;
1671 
+		}
1672 
+		if (n == 100) return FR_DENIED;		/* Abort if too many collisions */
1673 
+		if (res != FR_NO_FILE) return res;	/* Abort if the result is other than 'not collided' */
1674 
+		fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;
1675 
+	}
1676 
+
1677 
+	if (sn[NSFLAG] & NS_LFN) {			/* When LFN is to be created, allocate entries for an SFN + LFNs. */
1678 
+		for (n = 0; lfn[n]; n++) ;
1679 
+		nent = (n + 25) / 13;
1680 
+	} else {						/* Otherwise allocate an entry for an SFN  */
1681 
+		nent = 1;
1682 
+	}
1683 
+	res = dir_alloc(dp, nent);		/* Allocate entries */
1684 
+
1685 
+	if (res == FR_OK && --nent) {	/* Set LFN entry if needed */
1686 
+		res = dir_sdi(dp, dp->index - nent);
1687 
+		if (res == FR_OK) {
1688 
+			sum = sum_sfn(dp->fn);	/* Sum value of the SFN tied to the LFN */
1689 
+			do {					/* Store LFN entries in bottom first */
1690 
+				res = move_window(dp->fs, dp->sect);
1691 
+				if (res != FR_OK) break;
1692 
+				fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);
1693 
+				dp->fs->wflag = 1;
1694 
+				res = dir_next(dp, 0);	/* Next entry */
1695 
+			} while (res == FR_OK && --nent);
1696 
+		}
1697 
+	}
1698 
+#else	/* Non LFN configuration */
1699 
+	res = dir_alloc(dp, 1);		/* Allocate an entry for SFN */
1700 
+#endif
1701 
+
1702 
+	if (res == FR_OK) {				/* Set SFN entry */
1703 
+		res = move_window(dp->fs, dp->sect);
1704 
+		if (res == FR_OK) {
1705 
+			mem_set(dp->dir, 0, SZ_DIRE);	/* Clean the entry */
1706 
+			mem_cpy(dp->dir, dp->fn, 11);	/* Put SFN */
1707 
+#if _USE_LFN
1708 
+			dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT);	/* Put NT flag */
1709 
+#endif
1710 
+			dp->fs->wflag = 1;
1711 
+		}
1712 
+	}
1713 
+
1714 
+	return res;
1715 
+}
1716 
+#endif /* !_FS_READONLY */
1717 
+
1718 
+
1719 
+
1720 
+
1721 
+/*-----------------------------------------------------------------------*/
1722 
+/* Remove an object from the directory                                   */
1723 
+/*-----------------------------------------------------------------------*/
1724 
+#if !_FS_READONLY && !_FS_MINIMIZE
1725 
+static
1726 
+FRESULT dir_remove (	/* FR_OK: Successful, FR_DISK_ERR: A disk error */
1727 
+	DIR* dp				/* Directory object pointing the entry to be removed */
1728 
+)
1729 
+{
1730 
+	FRESULT res;
1731 
+#if _USE_LFN	/* LFN configuration */
1732 
+	UINT i;
1733 
+
1734 
+	i = dp->index;	/* SFN index */
1735 
+	res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx);	/* Goto the SFN or top of the LFN entries */
1736 
+	if (res == FR_OK) {
1737 
+		do {
1738 
+			res = move_window(dp->fs, dp->sect);
1739 
+			if (res != FR_OK) break;
1740 
+			mem_set(dp->dir, 0, SZ_DIRE);	/* Clear and mark the entry "deleted" */
1741 
+			*dp->dir = DDEM;
1742 
+			dp->fs->wflag = 1;
1743 
+			if (dp->index >= i) break;	/* When reached SFN, all entries of the object has been deleted. */
1744 
+			res = dir_next(dp, 0);		/* Next entry */
1745 
+		} while (res == FR_OK);
1746 
+		if (res == FR_NO_FILE) res = FR_INT_ERR;
1747 
+	}
1748 
+
1749 
+#else			/* Non LFN configuration */
1750 
+	res = dir_sdi(dp, dp->index);
1751 
+	if (res == FR_OK) {
1752 
+		res = move_window(dp->fs, dp->sect);
1753 
+		if (res == FR_OK) {
1754 
+			mem_set(dp->dir, 0, SZ_DIRE);	/* Clear and mark the entry "deleted" */
1755 
+			*dp->dir = DDEM;
1756 
+			dp->fs->wflag = 1;
1757 
+		}
1758 
+	}
1759 
+#endif
1760 
+
1761 
+	return res;
1762 
+}
1763 
+#endif /* !_FS_READONLY */
1764 
+
1765 
+
1766 
+
1767 
+
1768 
+/*-----------------------------------------------------------------------*/
1769 
+/* Get file information from directory entry                             */
1770 
+/*-----------------------------------------------------------------------*/
1771 
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
1772 
+static
1773 
+void get_fileinfo (		/* No return code */
1774 
+	DIR* dp,			/* Pointer to the directory object */
1775 
+	FILINFO* fno	 	/* Pointer to the file information to be filled */
1776 
+)
1777 
+{
1778 
+	UINT i;
1779 
+	TCHAR *p, c;
1780 
+	BYTE *dir;
1781 
+#if _USE_LFN
1782 
+	WCHAR w, *lfn;
1783 
+#endif
1784 
+
1785 
+	p = fno->fname;
1786 
+	if (dp->sect) {		/* Get SFN */
1787 
+		dir = dp->dir;
1788 
+		i = 0;
1789 
+		while (i < 11) {		/* Copy name body and extension */
1790 
+			c = (TCHAR)dir[i++];
1791 
+			if (c == ' ') continue;				/* Skip padding spaces */
1792 
+			if (c == RDDEM) c = (TCHAR)DDEM;	/* Restore replaced DDEM character */
1793 
+			if (i == 9) *p++ = '.';				/* Insert a . if extension is exist */
1794 
+#if _USE_LFN
1795 
+			if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
1796 
+				c += 0x20;			/* To lower */
1797 
+#if _LFN_UNICODE
1798 
+			if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))
1799 
+				c = c << 8 | dir[i++];
1800 
+			c = ff_convert(c, 1);	/* OEM -> Unicode */
1801 
+			if (!c) c = '?';
1802 
+#endif
1803 
+#endif
1804 
+			*p++ = c;
1805 
+		}
1806 
+		fno->fattrib = dir[DIR_Attr];				/* Attribute */
1807 
+		fno->fsize = LD_DWORD(dir + DIR_FileSize);	/* Size */
1808 
+		fno->fdate = LD_WORD(dir + DIR_WrtDate);	/* Date */
1809 
+		fno->ftime = LD_WORD(dir + DIR_WrtTime);	/* Time */
1810 
+	}
1811 
+	*p = 0;		/* Terminate SFN string by a \0 */
1812 
+
1813 
+#if _USE_LFN
1814 
+	if (fno->lfname) {
1815 
+		i = 0; p = fno->lfname;
1816 
+		if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) {	/* Get LFN if available */
1817 
+			lfn = dp->lfn;
1818 
+			while ((w = *lfn++) != 0) {		/* Get an LFN character */
1819 
+#if !_LFN_UNICODE
1820 
+				w = ff_convert(w, 0);		/* Unicode -> OEM */
1821 
+				if (!w) { i = 0; break; }	/* No LFN if it could not be converted */
1822 
+				if (_DF1S && w >= 0x100)	/* Put 1st byte if it is a DBC (always false on SBCS cfg) */
1823 
+					p[i++] = (TCHAR)(w >> 8);
1824 
+#endif
1825 
+				if (i >= fno->lfsize - 1) { i = 0; break; }	/* No LFN if buffer overflow */
1826 
+				p[i++] = (TCHAR)w;
1827 
+			}
1828 
+		}
1829 
+		p[i] = 0;	/* Terminate LFN string by a \0 */
1830 
+	}
1831 
+#endif
1832 
+}
1833 
+#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
1834 
+
1835 
+
1836 
+
1837 
+
1838 
+/*-----------------------------------------------------------------------*/
1839 
+/* Pattern matching                                                      */
1840 
+/*-----------------------------------------------------------------------*/
1841 
+#if _USE_FIND && _FS_MINIMIZE <= 1
1842 
+static
1843 
+WCHAR get_achar (		/* Get a character and advances ptr 1 or 2 */
1844 
+	const TCHAR** ptr	/* Pointer to pointer to the SBCS/DBCS/Unicode string */
1845 
+)
1846 
+{
1847 
+	WCHAR chr;
1848 
+
1849 
+#if !_LFN_UNICODE
1850 
+	chr = (BYTE)*(*ptr)++;					/* Get a byte */
1851 
+	if (IsLower(chr)) chr -= 0x20;			/* To upper ASCII char */
1852 
+	if (IsDBCS1(chr) && IsDBCS2(**ptr))		/* Get DBC 2nd byte if needed */
1853 
+		chr = chr << 8 | (BYTE)*(*ptr)++;
1854 
+#ifdef _EXCVT
1855 
+	if (chr >= 0x80) chr = ExCvt[chr - 0x80];	/* To upper SBCS extended char */
1856 
+#endif
1857 
+#else
1858 
+	chr = ff_wtoupper(*(*ptr)++);			/* Get a word and to upper */
1859 
+#endif
1860 
+	return chr;
1861 
+}
1862 
+
1863 
+
1864 
+static
1865 
+int pattern_matching (	/* Return value: 0:mismatched, 1:matched */
1866 
+	const TCHAR* pat,	/* Matching pattern */
1867 
+	const TCHAR* nam,	/* String to be tested */
1868 
+	int skip,			/* Number of pre-skip chars (number of ?s) */
1869 
+	int inf				/* Infinite search (* specified) */
1870 
+)
1871 
+{
1872 
+	const TCHAR *pp, *np;
1873 
+	WCHAR pc, nc;
1874 
+	int nm, nx;
1875 
+
1876 
+
1877 
+	while (skip--) {				/* Pre-skip name chars */
1878 
+		if (!get_achar(&nam)) return 0;	/* Branch mismatched if less name chars */
1879 
+	}
1880 
+	if (!*pat && inf) return 1;		/* (short circuit) */
1881 
+
1882 
+	do {
1883 
+		pp = pat; np = nam;			/* Top of pattern and name to match */
1884 
+		for (;;) {
1885 
+			if (*pp == '?' || *pp == '*') {	/* Wildcard? */
1886 
+				nm = nx = 0;
1887 
+				do {				/* Analyze the wildcard chars */
1888 
+					if (*pp++ == '?') nm++; else nx = 1;
1889 
+				} while (*pp == '?' || *pp == '*');
1890 
+				if (pattern_matching(pp, np, nm, nx)) return 1;	/* Test new branch (recurs upto number of wildcard blocks in the pattern) */
1891 
+				nc = *np; break;	/* Branch mismatched */
1892 
+			}
1893 
+			pc = get_achar(&pp);	/* Get a pattern char */
1894 
+			nc = get_achar(&np);	/* Get a name char */
1895 
+			if (pc != nc) break;	/* Branch mismatched? */
1896 
+			if (!pc) return 1;		/* Branch matched? (matched at end of both strings) */
1897 
+		}
1898 
+		get_achar(&nam);			/* nam++ */
1899 
+	} while (inf && nc);			/* Retry until end of name if infinite search is specified */
1900 
+
1901 
+	return 0;
1902 
+}
1903 
+#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
1904 
+
1905 
+
1906 
+
1907 
+
1908 
+/*-----------------------------------------------------------------------*/
1909 
+/* Pick a segment and create the object name in directory form           */
1910 
+/*-----------------------------------------------------------------------*/
1911 
+
1912 
+static
1913 
+FRESULT create_name (
1914 
+	DIR* dp,			/* Pointer to the directory object */
1915 
+	const TCHAR** path	/* Pointer to pointer to the segment in the path string */
1916 
+)
1917 
+{
1918 
+#if _USE_LFN	/* LFN configuration */
1919 
+	BYTE b, cf;
1920 
+	WCHAR w, *lfn;
1921 
+	UINT i, ni, si, di;
1922 
+	const TCHAR *p;
1923 
+
1924 
+	/* Create LFN in Unicode */
1925 
+	for (p = *path; *p == '/' || *p == '\\'; p++) ;	/* Strip duplicated separator */
1926 
+	lfn = dp->lfn;
1927 
+	si = di = 0;
1928 
+	for (;;) {
1929 
+		w = p[si++];					/* Get a character */
1930 
+		if (w < ' ' || w == '/' || w == '\\') break;	/* Break on end of segment */
1931 
+		if (di >= _MAX_LFN)				/* Reject too long name */
1932 
+			return FR_INVALID_NAME;
1933 
+#if !_LFN_UNICODE
1934 
+		w &= 0xFF;
1935 
+		if (IsDBCS1(w)) {				/* Check if it is a DBC 1st byte (always false on SBCS cfg) */
1936 
+#if _DF1S
1937 
+			b = (BYTE)p[si++];			/* Get 2nd byte */
1938 
+			w = (w << 8) + b;			/* Create a DBC */
1939 
+			if (!IsDBCS2(b))
1940 
+				return FR_INVALID_NAME;	/* Reject invalid sequence */
1941 
+#endif
1942 
+		}
1943 
+		w = ff_convert(w, 1);			/* Convert ANSI/OEM to Unicode */
1944 
+		if (!w) return FR_INVALID_NAME;	/* Reject invalid code */
1945 
+#endif
1946 
+		if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */
1947 
+			return FR_INVALID_NAME;
1948 
+		lfn[di++] = w;					/* Store the Unicode character */
1949 
+	}
1950 
+	*path = &p[si];						/* Return pointer to the next segment */
1951 
+	cf = (w < ' ') ? NS_LAST : 0;		/* Set last segment flag if end of path */
1952 
+#if _FS_RPATH
1953 
+	if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
1954 
+		(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
1955 
+		lfn[di] = 0;
1956 
+		for (i = 0; i < 11; i++)
1957 
+			dp->fn[i] = (i < di) ? '.' : ' ';
1958 
+		dp->fn[i] = cf | NS_DOT;		/* This is a dot entry */
1959 
+		return FR_OK;
1960 
+	}
1961 
+#endif
1962 
+	while (di) {						/* Strip trailing spaces and dots */
1963 
+		w = lfn[di - 1];
1964 
+		if (w != ' ' && w != '.') break;
1965 
+		di--;
1966 
+	}
1967 
+	if (!di) return FR_INVALID_NAME;	/* Reject nul string */
1968 
+
1969 
+	lfn[di] = 0;						/* LFN is created */
1970 
+
1971 
+	/* Create SFN in directory form */
1972 
+	mem_set(dp->fn, ' ', 11);
1973 
+	for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;	/* Strip leading spaces and dots */
1974 
+	if (si) cf |= NS_LOSS | NS_LFN;
1975 
+	while (di && lfn[di - 1] != '.') di--;	/* Find extension (di<=si: no extension) */
1976 
+
1977 
+	b = i = 0; ni = 8;
1978 
+	for (;;) {
1979 
+		w = lfn[si++];					/* Get an LFN character */
1980 
+		if (!w) break;					/* Break on end of the LFN */
1981 
+		if (w == ' ' || (w == '.' && si != di)) {	/* Remove spaces and dots */
1982 
+			cf |= NS_LOSS | NS_LFN; continue;
1983 
+		}
1984 
+
1985 
+		if (i >= ni || si == di) {		/* Extension or end of SFN */
1986 
+			if (ni == 11) {				/* Long extension */
1987 
+				cf |= NS_LOSS | NS_LFN; break;
1988 
+			}
1989 
+			if (si != di) cf |= NS_LOSS | NS_LFN;	/* Out of 8.3 format */
1990 
+			if (si > di) break;			/* No extension */
1991 
+			si = di; i = 8; ni = 11;	/* Enter extension section */
1992 
+			b <<= 2; continue;
1993 
+		}
1994 
+
1995 
+		if (w >= 0x80) {				/* Non ASCII character */
1996 
+#ifdef _EXCVT
1997 
+			w = ff_convert(w, 0);		/* Unicode -> OEM code */
1998 
+			if (w) w = ExCvt[w - 0x80];	/* Convert extended character to upper (SBCS) */
1999 
+#else
2000 
+			w = ff_convert(ff_wtoupper(w), 0);	/* Upper converted Unicode -> OEM code */
2001 
+#endif
2002 
+			cf |= NS_LFN;				/* Force create LFN entry */
2003 
+		}
2004 
+
2005 
+		if (_DF1S && w >= 0x100) {		/* DBC (always false at SBCS cfg) */
2006 
+			if (i >= ni - 1) {
2007 
+				cf |= NS_LOSS | NS_LFN; i = ni; continue;
2008 
+			}
2009 
+			dp->fn[i++] = (BYTE)(w >> 8);
2010 
+		} else {						/* SBC */
2011 
+			if (!w || chk_chr("+,;=[]", w)) {	/* Replace illegal characters for SFN */
2012 
+				w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
2013 
+			} else {
2014 
+				if (IsUpper(w)) {		/* ASCII large capital */
2015 
+					b |= 2;
2016 
+				} else {
2017 
+					if (IsLower(w)) {	/* ASCII small capital */
2018 
+						b |= 1; w -= 0x20;
2019 
+					}
2020 
+				}
2021 
+			}
2022 
+		}
2023 
+		dp->fn[i++] = (BYTE)w;
2024 
+	}
2025 
+
2026 
+	if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM;	/* If the first character collides with deleted mark, replace it with RDDEM */
2027 
+
2028 
+	if (ni == 8) b <<= 2;
2029 
+	if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03)	/* Create LFN entry when there are composite capitals */
2030 
+		cf |= NS_LFN;
2031 
+	if (!(cf & NS_LFN)) {						/* When LFN is in 8.3 format without extended character, NT flags are created */
2032 
+		if ((b & 0x03) == 0x01) cf |= NS_EXT;	/* NT flag (Extension has only small capital) */
2033 
+		if ((b & 0x0C) == 0x04) cf |= NS_BODY;	/* NT flag (Filename has only small capital) */
2034 
+	}
2035 
+
2036 
+	dp->fn[NSFLAG] = cf;	/* SFN is created */
2037 
+
2038 
+	return FR_OK;
2039 
+
2040 
+
2041 
+#else	/* Non-LFN configuration */
2042 
+	BYTE b, c, d, *sfn;
2043 
+	UINT ni, si, i;
2044 
+	const char *p;
2045 
+
2046 
+	/* Create file name in directory form */
2047 
+	for (p = *path; *p == '/' || *p == '\\'; p++) ;	/* Strip duplicated separator */
2048 
+	sfn = dp->fn;
2049 
+	mem_set(sfn, ' ', 11);
2050 
+	si = i = b = 0; ni = 8;
2051 
+#if _FS_RPATH
2052 
+	if (p[si] == '.') { /* Is this a dot entry? */
2053 
+		for (;;) {
2054 
+			c = (BYTE)p[si++];
2055 
+			if (c != '.' || si >= 3) break;
2056 
+			sfn[i++] = c;
2057 
+		}
2058 
+		if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
2059 
+		*path = &p[si];									/* Return pointer to the next segment */
2060 
+		sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;	/* Set last segment flag if end of path */
2061 
+		return FR_OK;
2062 
+	}
2063 
+#endif
2064 
+	for (;;) {
2065 
+		c = (BYTE)p[si++];
2066 
+		if (c <= ' ' || c == '/' || c == '\\') break;	/* Break on end of segment */
2067 
+		if (c == '.' || i >= ni) {
2068 
+			if (ni != 8 || c != '.') return FR_INVALID_NAME;
2069 
+			i = 8; ni = 11;
2070 
+			b <<= 2; continue;
2071 
+		}
2072 
+		if (c >= 0x80) {				/* Extended character? */
2073 
+			b |= 3;						/* Eliminate NT flag */
2074 
+#ifdef _EXCVT
2075 
+			c = ExCvt[c - 0x80];		/* To upper extended characters (SBCS cfg) */
2076 
+#else
2077 
+#if !_DF1S
2078 
+			return FR_INVALID_NAME;		/* Reject extended characters (ASCII cfg) */
2079 
+#endif
2080 
+#endif
2081 
+		}
2082 
+		if (IsDBCS1(c)) {				/* Check if it is a DBC 1st byte (always false on SBCS cfg) */
2083 
+			d = (BYTE)p[si++];			/* Get 2nd byte */
2084 
+			if (!IsDBCS2(d) || i >= ni - 1)	/* Reject invalid DBC */
2085 
+				return FR_INVALID_NAME;
2086 
+			sfn[i++] = c;
2087 
+			sfn[i++] = d;
2088 
+		} else {						/* SBC */
2089 
+			if (chk_chr("\"*+,:;<=>\?[]|\x7F", c))	/* Reject illegal chrs for SFN */
2090 
+				return FR_INVALID_NAME;
2091 
+			if (IsUpper(c)) {			/* ASCII large capital? */
2092 
+				b |= 2;
2093 
+			} else {
2094 
+				if (IsLower(c)) {		/* ASCII small capital? */
2095 
+					b |= 1; c -= 0x20;
2096 
+				}
2097 
+			}
2098 
+			sfn[i++] = c;
2099 
+		}
2100 
+	}
2101 
+	*path = &p[si];						/* Return pointer to the next segment */
2102 
+	c = (c <= ' ') ? NS_LAST : 0;		/* Set last segment flag if end of path */
2103 
+
2104 
+	if (!i) return FR_INVALID_NAME;		/* Reject nul string */
2105 
+	if (sfn[0] == DDEM) sfn[0] = RDDEM;	/* When first character collides with DDEM, replace it with RDDEM */
2106 
+
2107 
+	if (ni == 8) b <<= 2;
2108 
+	if ((b & 0x03) == 0x01) c |= NS_EXT;	/* NT flag (Name extension has only small capital) */
2109 
+	if ((b & 0x0C) == 0x04) c |= NS_BODY;	/* NT flag (Name body has only small capital) */
2110 
+
2111 
+	sfn[NSFLAG] = c;		/* Store NT flag, File name is created */
2112 
+
2113 
+	return FR_OK;
2114 
+#endif
2115 
+}
2116 
+
2117 
+
2118 
+
2119 
+
2120 
+/*-----------------------------------------------------------------------*/
2121 
+/* Follow a file path                                                    */
2122 
+/*-----------------------------------------------------------------------*/
2123 
+
2124 
+static
2125 
+FRESULT follow_path (	/* FR_OK(0): successful, !=0: error code */
2126 
+	DIR* dp,			/* Directory object to return last directory and found object */
2127 
+	const TCHAR* path	/* Full-path string to find a file or directory */
2128 
+)
2129 
+{
2130 
+	FRESULT res;
2131 
+	BYTE *dir, ns;
2132 
+
2133 
+
2134 
+#if _FS_RPATH
2135 
+	if (*path == '/' || *path == '\\') {	/* There is a heading separator */
2136 
+		path++;	dp->sclust = 0;				/* Strip it and start from the root directory */
2137 
+	} else {								/* No heading separator */
2138 
+		dp->sclust = dp->fs->cdir;			/* Start from the current directory */
2139 
+	}
2140 
+#else
2141 
+	if (*path == '/' || *path == '\\')		/* Strip heading separator if exist */
2142 
+		path++;
2143 
+	dp->sclust = 0;							/* Always start from the root directory */
2144 
+#endif
2145 
+
2146 
+	if ((UINT)*path < ' ') {				/* Null path name is the origin directory itself */
2147 
+		res = dir_sdi(dp, 0);
2148 
+		dp->dir = 0;
2149 
+	} else {								/* Follow path */
2150 
+		for (;;) {
2151 
+			res = create_name(dp, &path);	/* Get a segment name of the path */
2152 
+			if (res != FR_OK) break;
2153 
+			res = dir_find(dp);				/* Find an object with the sagment name */
2154 
+			ns = dp->fn[NSFLAG];
2155 
+			if (res != FR_OK) {				/* Failed to find the object */
2156 
+				if (res == FR_NO_FILE) {	/* Object is not found */
2157 
+					if (_FS_RPATH && (ns & NS_DOT)) {	/* If dot entry is not exist, */
2158 
+						dp->sclust = 0; dp->dir = 0;	/* it is the root directory and stay there */
2159 
+						if (!(ns & NS_LAST)) continue;	/* Continue to follow if not last segment */
2160 
+						res = FR_OK;					/* Ended at the root directroy. Function completed. */
2161 
+					} else {							/* Could not find the object */
2162 
+						if (!(ns & NS_LAST)) res = FR_NO_PATH;	/* Adjust error code if not last segment */
2163 
+					}
2164 
+				}
2165 
+				break;
2166 
+			}
2167 
+			if (ns & NS_LAST) break;			/* Last segment matched. Function completed. */
2168 
+			dir = dp->dir;						/* Follow the sub-directory */
2169 
+			if (!(dir[DIR_Attr] & AM_DIR)) {	/* It is not a sub-directory and cannot follow */
2170 
+				res = FR_NO_PATH; break;
2171 
+			}
2172 
+			dp->sclust = ld_clust(dp->fs, dir);
2173 
+		}
2174 
+	}
2175 
+
2176 
+	return res;
2177 
+}
2178 
+
2179 
+
2180 
+
2181 
+
2182 
+/*-----------------------------------------------------------------------*/
2183 
+/* Get logical drive number from path name                               */
2184 
+/*-----------------------------------------------------------------------*/
2185 
+
2186 
+static
2187 
+int get_ldnumber (		/* Returns logical drive number (-1:invalid drive) */
2188 
+	const TCHAR** path	/* Pointer to pointer to the path name */
2189 
+)
2190 
+{
2191 
+	const TCHAR *tp, *tt;
2192 
+	UINT i;
2193 
+	int vol = -1;
2194 
+#if _STR_VOLUME_ID		/* Find string drive id */
2195 
+	static const char* const str[] = {_VOLUME_STRS};
2196 
+	const char *sp;
2197 
+	char c;
2198 
+	TCHAR tc;
2199 
+#endif
2200 
+
2201 
+
2202 
+	if (*path) {	/* If the pointer is not a null */
2203 
+		for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ;	/* Find ':' in the path */
2204 
+		if (*tt == ':') {	/* If a ':' is exist in the path name */
2205 
+			tp = *path;
2206 
+			i = *tp++ - '0';
2207 
+			if (i < 10 && tp == tt) {	/* Is there a numeric drive id? */
2208 
+				if (i < _VOLUMES) {	/* If a drive id is found, get the value and strip it */
2209 
+					vol = (int)i;
2210 
+					*path = ++tt;
2211 
+				}
2212 
+			}
2213 
+#if _STR_VOLUME_ID
2214 
+			 else {	/* No numeric drive number, find string drive id */
2215 
+				i = 0; tt++;
2216 
+				do {
2217 
+					sp = str[i]; tp = *path;
2218 
+					do {	/* Compare a string drive id with path name */
2219 
+						c = *sp++; tc = *tp++;
2220 
+						if (IsLower(tc)) tc -= 0x20;
2221 
+					} while (c && (TCHAR)c == tc);
2222 
+				} while ((c || tp != tt) && ++i < _VOLUMES);	/* Repeat for each id until pattern match */
2223 
+				if (i < _VOLUMES) {	/* If a drive id is found, get the value and strip it */
2224 
+					vol = (int)i;
2225 
+					*path = tt;
2226 
+				}
2227 
+			}
2228 
+#endif
2229 
+			return vol;
2230 
+		}
2231 
+#if _FS_RPATH && _VOLUMES >= 2
2232 
+		vol = CurrVol;	/* Current drive */
2233 
+#else
2234 
+		vol = 0;		/* Drive 0 */
2235 
+#endif
2236 
+	}
2237 
+	return vol;
2238 
+}
2239 
+
2240 
+
2241 
+
2242 
+
2243 
+/*-----------------------------------------------------------------------*/
2244 
+/* Load a sector and check if it is an FAT boot sector                   */
2245 
+/*-----------------------------------------------------------------------*/
2246 
+
2247 
+static
2248 
+BYTE check_fs (	/* 0:FAT boor sector, 1:Valid boor sector but not FAT, 2:Not a boot sector, 3:Disk error */
2249 
+	FATFS* fs,	/* File system object */
2250 
+	DWORD sect	/* Sector# (lba) to check if it is an FAT boot record or not */
2251 
+)
2252 
+{
2253 
+	fs->wflag = 0; fs->winsect = 0xFFFFFFFF;	/* Invaidate window */
2254 
+	if (move_window(fs, sect) != FR_OK)			/* Load boot record */
2255 
+		return 3;
2256 
+
2257 
+	if (LD_WORD(&fs->win.d8[BS_55AA]) != 0xAA55)	/* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
2258 
+		return 2;
2259 
+
2260 
+	if ((LD_DWORD(&fs->win.d8[BS_FilSysType]) & 0xFFFFFF) == 0x544146)		/* Check "FAT" string */
2261 
+		return 0;
2262 
+	if ((LD_DWORD(&fs->win.d8[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)	/* Check "FAT" string */
2263 
+		return 0;
2264 
+
2265 
+	return 1;
2266 
+}
2267 
+
2268 
+
2269 
+
2270 
+
2271 
+/*-----------------------------------------------------------------------*/
2272 
+/* Find logical drive and check if the volume is mounted                 */
2273 
+/*-----------------------------------------------------------------------*/
2274 
+
2275 
+static
2276 
+FRESULT find_volume (	/* FR_OK(0): successful, !=0: any error occurred */
2277 
+	FATFS** rfs,		/* Pointer to pointer to the found file system object */
2278 
+	const TCHAR** path,	/* Pointer to pointer to the path name (drive number) */
2279 
+	BYTE wmode			/* !=0: Check write protection for write access */
2280 
+)
2281 
+{
2282 
+	BYTE fmt, *pt;
2283 
+	int vol;
2284 
+	DSTATUS stat;
2285 
+	DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
2286 
+	WORD nrsv;
2287 
+	FATFS *fs;
2288 
+	UINT i;
2289 
+
2290 
+
2291 
+	/* Get logical drive number from the path name */
2292 
+	*rfs = 0;
2293 
+	vol = get_ldnumber(path);
2294 
+	if (vol < 0) return FR_INVALID_DRIVE;
2295 
+
2296 
+	/* Check if the file system object is valid or not */
2297 
+	fs = FatFs[vol];					/* Get pointer to the file system object */
2298 
+	if (!fs) return FR_NOT_ENABLED;		/* Is the file system object available? */
2299 
+
2300 
+	ENTER_FF(fs);						/* Lock the volume */
2301 
+	*rfs = fs;							/* Return pointer to the file system object */
2302 
+
2303 
+	if (fs->fs_type) {					/* If the volume has been mounted */
2304 
+		stat = disk_status(fs->drv);
2305 
+		if (!(stat & STA_NOINIT)) {		/* and the physical drive is kept initialized */
2306 
+			if (!_FS_READONLY && wmode && (stat & STA_PROTECT))	/* Check write protection if needed */
2307 
+				return FR_WRITE_PROTECTED;
2308 
+			return FR_OK;				/* The file system object is valid */
2309 
+		}
2310 
+	}
2311 
+
2312 
+	/* The file system object is not valid. */
2313 
+	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
2314 
+
2315 
+	fs->fs_type = 0;					/* Clear the file system object */
2316 
+	fs->drv = LD2PD(vol);				/* Bind the logical drive and a physical drive */
2317 
+	stat = disk_initialize(fs->drv);	/* Initialize the physical drive */
2318 
+	if (stat & STA_NOINIT)				/* Check if the initialization succeeded */
2319 
+		return FR_NOT_READY;			/* Failed to initialize due to no medium or hard error */
2320 
+	if (!_FS_READONLY && wmode && (stat & STA_PROTECT))	/* Check disk write protection if needed */
2321 
+		return FR_WRITE_PROTECTED;
2322 
+#if _MAX_SS != _MIN_SS						/* Get sector size (multiple sector size cfg only) */
2323 
+	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
2324 
+		|| SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;
2325 
+#endif
2326 
+	/* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
2327 
+	bsect = 0;
2328 
+	fmt = check_fs(fs, bsect);					/* Load sector 0 and check if it is an FAT boot sector as SFD */
2329 
+	if (fmt == 1 || (!fmt && (LD2PT(vol)))) {	/* Not an FAT boot sector or forced partition number */
2330 
+		for (i = 0; i < 4; i++) {			/* Get partition offset */
2331 
+			pt = fs->win.d8 + MBR_Table + i * SZ_PTE;
2332 
+			br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;
2333 
+		}
2334 
+		i = LD2PT(vol);						/* Partition number: 0:auto, 1-4:forced */
2335 
+		if (i) i--;
2336 
+		do {								/* Find an FAT volume */
2337 
+			bsect = br[i];
2338 
+			fmt = bsect ? check_fs(fs, bsect) : 2;	/* Check the partition */
2339 
+		} while (!LD2PT(vol) && fmt && ++i < 4);
2340 
+	}
2341 
+	if (fmt == 3) return FR_DISK_ERR;		/* An error occured in the disk I/O layer */
2342 
+	if (fmt) return FR_NO_FILESYSTEM;		/* No FAT volume is found */
2343 
+
2344 
+	/* An FAT volume is found. Following code initializes the file system object */
2345 
+
2346 
+	if (LD_WORD(fs->win.d8 + BPB_BytsPerSec) != SS(fs))	/* (BPB_BytsPerSec must be equal to the physical sector size) */
2347 
+		return FR_NO_FILESYSTEM;
2348 
+
2349 
+	fasize = LD_WORD(fs->win.d8 + BPB_FATSz16);			/* Number of sectors per FAT */
2350 
+	if (!fasize) fasize = LD_DWORD(fs->win.d8 + BPB_FATSz32);
2351 
+	fs->fsize = fasize;
2352 
+
2353 
+	fs->n_fats = fs->win.d8[BPB_NumFATs];					/* Number of FAT copies */
2354 
+	if (fs->n_fats != 1 && fs->n_fats != 2)				/* (Must be 1 or 2) */
2355 
+		return FR_NO_FILESYSTEM;
2356 
+	fasize *= fs->n_fats;								/* Number of sectors for FAT area */
2357 
+
2358 
+	fs->csize = fs->win.d8[BPB_SecPerClus];				/* Number of sectors per cluster */
2359 
+	if (!fs->csize || (fs->csize & (fs->csize - 1)))	/* (Must be power of 2) */
2360 
+		return FR_NO_FILESYSTEM;
2361 
+
2362 
+	fs->n_rootdir = LD_WORD(fs->win.d8 + BPB_RootEntCnt);	/* Number of root directory entries */
2363 
+	if (fs->n_rootdir % (SS(fs) / SZ_DIRE))				/* (Must be sector aligned) */
2364 
+		return FR_NO_FILESYSTEM;
2365 
+
2366 
+	tsect = LD_WORD(fs->win.d8 + BPB_TotSec16);			/* Number of sectors on the volume */
2367 
+	if (!tsect) tsect = LD_DWORD(fs->win.d8 + BPB_TotSec32);
2368 
+
2369 
+	nrsv = LD_WORD(fs->win.d8 + BPB_RsvdSecCnt);			/* Number of reserved sectors */
2370 
+	if (!nrsv) return FR_NO_FILESYSTEM;					/* (Must not be 0) */
2371 
+
2372 
+	/* Determine the FAT sub type */
2373 
+	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIRE);	/* RSV + FAT + DIR */
2374 
+	if (tsect < sysect) return FR_NO_FILESYSTEM;		/* (Invalid volume size) */
2375 
+	nclst = (tsect - sysect) / fs->csize;				/* Number of clusters */
2376 
+	if (!nclst) return FR_NO_FILESYSTEM;				/* (Invalid volume size) */
2377 
+	fmt = FS_FAT12;
2378 
+	if (nclst >= MIN_FAT16) fmt = FS_FAT16;
2379 
+	if (nclst >= MIN_FAT32) fmt = FS_FAT32;
2380 
+
2381 
+	/* Boundaries and Limits */
2382 
+	fs->n_fatent = nclst + 2;							/* Number of FAT entries */
2383 
+	fs->volbase = bsect;								/* Volume start sector */
2384 
+	fs->fatbase = bsect + nrsv; 						/* FAT start sector */
2385 
+	fs->database = bsect + sysect;						/* Data start sector */
2386 
+	if (fmt == FS_FAT32) {
2387 
+		if (fs->n_rootdir) return FR_NO_FILESYSTEM;		/* (BPB_RootEntCnt must be 0) */
2388 
+		fs->dirbase = LD_DWORD(fs->win.d8 + BPB_RootClus);	/* Root directory start cluster */
2389 
+		szbfat = fs->n_fatent * 4;						/* (Needed FAT size) */
2390 
+	} else {
2391 
+		if (!fs->n_rootdir)	return FR_NO_FILESYSTEM;	/* (BPB_RootEntCnt must not be 0) */
2392 
+		fs->dirbase = fs->fatbase + fasize;				/* Root directory start sector */
2393 
+		szbfat = (fmt == FS_FAT16) ?					/* (Needed FAT size) */
2394 
+			fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
2395 
+	}
2396 
+	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs))	/* (BPB_FATSz must not be less than the size needed) */
2397 
+		return FR_NO_FILESYSTEM;
2398 
+
2399 
+#if !_FS_READONLY
2400 
+	/* Initialize cluster allocation information */
2401 
+	fs->last_clust = fs->free_clust = 0xFFFFFFFF;
2402 
+
2403 
+	/* Get fsinfo if available */
2404 
+	fs->fsi_flag = 0x80;
2405 
+#if (_FS_NOFSINFO & 3) != 3
2406 
+	if (fmt == FS_FAT32				/* Enable FSINFO only if FAT32 and BPB_FSInfo is 1 */
2407 
+		&& LD_WORD(fs->win.d8 + BPB_FSInfo) == 1
2408 
+		&& move_window(fs, bsect + 1) == FR_OK)
2409 
+	{
2410 
+		fs->fsi_flag = 0;
2411 
+		if (LD_WORD(fs->win.d8 + BS_55AA) == 0xAA55	/* Load FSINFO data if available */
2412 
+			&& LD_DWORD(fs->win.d8 + FSI_LeadSig) == 0x41615252
2413 
+			&& LD_DWORD(fs->win.d8 + FSI_StrucSig) == 0x61417272)
2414 
+		{
2415 
+#if (_FS_NOFSINFO & 1) == 0
2416 
+			fs->free_clust = LD_DWORD(fs->win.d8 + FSI_Free_Count);
2417 
+#endif
2418 
+#if (_FS_NOFSINFO & 2) == 0
2419 
+			fs->last_clust = LD_DWORD(fs->win.d8 + FSI_Nxt_Free);
2420 
+#endif
2421 
+		}
2422 
+	}
2423 
+#endif
2424 
+#endif
2425 
+	fs->fs_type = fmt;	/* FAT sub-type */
2426 
+	fs->id = ++Fsid;	/* File system mount ID */
2427 
+#if _FS_RPATH
2428 
+	fs->cdir = 0;		/* Set current directory to root */
2429 
+#endif
2430 
+#if _FS_LOCK			/* Clear file lock semaphores */
2431 
+	clear_lock(fs);
2432 
+#endif
2433 
+
2434 
+	return FR_OK;
2435 
+}
2436 
+
2437 
+
2438 
+
2439 
+
2440 
+/*-----------------------------------------------------------------------*/
2441 
+/* Check if the file/directory object is valid or not                    */
2442 
+/*-----------------------------------------------------------------------*/
2443 
+
2444 
+static
2445 
+FRESULT validate (	/* FR_OK(0): The object is valid, !=0: Invalid */
2446 
+	void* obj		/* Pointer to the object FIL/DIR to check validity */
2447 
+)
2448 
+{
2449 
+	FIL *fil = (FIL*)obj;	/* Assuming offset of .fs and .id in the FIL/DIR structure is identical */
2450 
+
2451 
+
2452 
+	if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id || (disk_status(fil->fs->drv) & STA_NOINIT))
2453 
+		return FR_INVALID_OBJECT;
2454 
+
2455 
+	ENTER_FF(fil->fs);		/* Lock file system */
2456 
+
2457 
+	return FR_OK;
2458 
+}
2459 
+
2460 
+
2461 
+
2462 
+
2463 
+/*--------------------------------------------------------------------------
2464 
+
2465 
+   Public Functions
2466 
+
2467 
+--------------------------------------------------------------------------*/
2468 
+
2469 
+
2470 
+
2471 
+/*-----------------------------------------------------------------------*/
2472 
+/* Mount/Unmount a Logical Drive                                         */
2473 
+/*-----------------------------------------------------------------------*/
2474 
+
2475 
+FRESULT f_mount (
2476 
+	FATFS* fs,			/* Pointer to the file system object (NULL:unmount)*/
2477 
+	const TCHAR* path,	/* Logical drive number to be mounted/unmounted */
2478 
+	BYTE opt			/* 0:Do not mount (delayed mount), 1:Mount immediately */
2479 
+)
2480 
+{
2481 
+	FATFS *cfs;
2482 
+	int vol;
2483 
+	FRESULT res;
2484 
+	const TCHAR *rp = path;
2485 
+
2486 
+
2487 
+	vol = get_ldnumber(&rp);
2488 
+	if (vol < 0) return FR_INVALID_DRIVE;
2489 
+	cfs = FatFs[vol];					/* Pointer to fs object */
2490 
+
2491 
+	if (cfs) {
2492 
+#if _FS_LOCK
2493 
+		clear_lock(cfs);
2494 
+#endif
2495 
+#if _FS_REENTRANT						/* Discard sync object of the current volume */
2496 
+		if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
2497 
+#endif
2498 
+		cfs->fs_type = 0;				/* Clear old fs object */
2499 
+	}
2500 
+
2501 
+	if (fs) {
2502 
+		fs->fs_type = 0;				/* Clear new fs object */
2503 
+#if _FS_REENTRANT						/* Create sync object for the new volume */
2504 
+		if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
2505 
+#endif
2506 
+	}
2507 
+	FatFs[vol] = fs;					/* Register new fs object */
2508 
+
2509 
+	if (!fs || opt != 1) return FR_OK;	/* Do not mount now, it will be mounted later */
2510 
+
2511 
+	res = find_volume(&fs, &path, 0);	/* Force mounted the volume */
2512 
+	LEAVE_FF(fs, res);
2513 
+}
2514 
+
2515 
+
2516 
+
2517 
+
2518 
+/*-----------------------------------------------------------------------*/
2519 
+/* Open or Create a File                                                 */
2520 
+/*-----------------------------------------------------------------------*/
2521 
+
2522 
+FRESULT f_open (
2523 
+	FIL* fp,			/* Pointer to the blank file object */
2524 
+	const TCHAR* path,	/* Pointer to the file name */
2525 
+	BYTE mode			/* Access mode and file open mode flags */
2526 
+)
2527 
+{
2528 
+	FRESULT res;
2529 
+	DIR dj;
2530 
+	BYTE *dir;
2531 
+	DEFINE_NAMEBUF;
2532 
+#if !_FS_READONLY
2533 
+	DWORD dw, cl;
2534 
+#endif
2535 
+
2536 
+
2537 
+	if (!fp) return FR_INVALID_OBJECT;
2538 
+	fp->fs = 0;			/* Clear file object */
2539 
+
2540 
+	/* Get logical drive number */
2541 
+#if !_FS_READONLY
2542 
+	mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
2543 
+	res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));
2544 
+#else
2545 
+	mode &= FA_READ;
2546 
+	res = find_volume(&dj.fs, &path, 0);
2547 
+#endif
2548 
+	if (res == FR_OK) {
2549 
+		INIT_BUF(dj);
2550 
+		res = follow_path(&dj, path);	/* Follow the file path */
2551 
+		dir = dj.dir;
2552 
+#if !_FS_READONLY	/* R/W configuration */
2553 
+		if (res == FR_OK) {
2554 
+			if (!dir)	/* Default directory itself */
2555 
+				res = FR_INVALID_NAME;
2556 
+#if _FS_LOCK
2557 
+			else
2558 
+				res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
2559 
+#endif
2560 
+		}
2561 
+		/* Create or Open a file */
2562 
+		if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
2563 
+			if (res != FR_OK) {					/* No file, create new */
2564 
+				if (res == FR_NO_FILE)			/* There is no file to open, create a new entry */
2565 
+#if _FS_LOCK
2566 
+					res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
2567 
+#else
2568 
+					res = dir_register(&dj);
2569 
+#endif
2570 
+				mode |= FA_CREATE_ALWAYS;		/* File is created */
2571 
+				dir = dj.dir;					/* New entry */
2572 
+			}
2573 
+			else {								/* Any object is already existing */
2574 
+				if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) {	/* Cannot overwrite it (R/O or DIR) */
2575 
+					res = FR_DENIED;
2576 
+				} else {
2577 
+					if (mode & FA_CREATE_NEW)	/* Cannot create as new file */
2578 
+						res = FR_EXIST;
2579 
+				}
2580 
+			}
2581 
+			if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) {	/* Truncate it if overwrite mode */
2582 
+				dw = GET_FATTIME();				/* Created time */
2583 
+				ST_DWORD(dir + DIR_CrtTime, dw);
2584 
+				dir[DIR_Attr] = 0;				/* Reset attribute */
2585 
+				ST_DWORD(dir + DIR_FileSize, 0);/* size = 0 */
2586 
+				cl = ld_clust(dj.fs, dir);		/* Get start cluster */
2587 
+				st_clust(dir, 0);				/* cluster = 0 */
2588 
+				dj.fs->wflag = 1;
2589 
+				if (cl) {						/* Remove the cluster chain if exist */
2590 
+					dw = dj.fs->winsect;
2591 
+					res = remove_chain(dj.fs, cl);
2592 
+					if (res == FR_OK) {
2593 
+						dj.fs->last_clust = cl - 1;	/* Reuse the cluster hole */
2594 
+						res = move_window(dj.fs, dw);
2595 
+					}
2596 
+				}
2597 
+			}
2598 
+		}
2599 
+		else {	/* Open an existing file */
2600 
+			if (res == FR_OK) {					/* Follow succeeded */
2601 
+				if (dir[DIR_Attr] & AM_DIR) {	/* It is a directory */
2602 
+					res = FR_NO_FILE;
2603 
+				} else {
2604 
+					if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
2605 
+						res = FR_DENIED;
2606 
+				}
2607 
+			}
2608 
+		}
2609 
+		if (res == FR_OK) {
2610 
+			if (mode & FA_CREATE_ALWAYS)		/* Set file change flag if created or overwritten */
2611 
+				mode |= FA__WRITTEN;
2612 
+			fp->dir_sect = dj.fs->winsect;		/* Pointer to the directory entry */
2613 
+			fp->dir_ptr = dir;
2614 
+#if _FS_LOCK
2615 
+			fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
2616 
+			if (!fp->lockid) res = FR_INT_ERR;
2617 
+#endif
2618 
+		}
2619 
+
2620 
+#else				/* R/O configuration */
2621 
+		if (res == FR_OK) {					/* Follow succeeded */
2622 
+			dir = dj.dir;
2623 
+			if (!dir) {						/* Current directory itself */
2624 
+				res = FR_INVALID_NAME;
2625 
+			} else {
2626 
+				if (dir[DIR_Attr] & AM_DIR)	/* It is a directory */
2627 
+					res = FR_NO_FILE;
2628 
+			}
2629 
+		}
2630 
+#endif
2631 
+		FREE_BUF();
2632 
+
2633 
+		if (res == FR_OK) {
2634 
+			fp->flag = mode;					/* File access mode */
2635 
+			fp->err = 0;						/* Clear error flag */
2636 
+			fp->sclust = ld_clust(dj.fs, dir);	/* File start cluster */
2637 
+			fp->fsize = LD_DWORD(dir + DIR_FileSize);	/* File size */
2638 
+			fp->fptr = 0;						/* File pointer */
2639 
+			fp->dsect = 0;
2640 
+#if _USE_FASTSEEK
2641 
+			fp->cltbl = 0;						/* Normal seek mode */
2642 
+#endif
2643 
+			fp->fs = dj.fs;	 					/* Validate file object */
2644 
+			fp->id = fp->fs->id;
2645 
+		}
2646 
+	}
2647 
+
2648 
+	LEAVE_FF(dj.fs, res);
2649 
+}
2650 
+
2651 
+
2652 
+
2653 
+
2654 
+/*-----------------------------------------------------------------------*/
2655 
+/* Read File                                                             */
2656 
+/*-----------------------------------------------------------------------*/
2657 
+
2658 
+FRESULT f_read (
2659 
+	FIL* fp, 		/* Pointer to the file object */
2660 
+	void* buff,		/* Pointer to data buffer */
2661 
+	UINT btr,		/* Number of bytes to read */
2662 
+	UINT* br		/* Pointer to number of bytes read */
2663 
+)
2664 
+{
2665 
+	FRESULT res;
2666 
+	DWORD clst, sect, remain;
2667 
+	UINT rcnt, cc;
2668 
+	BYTE csect, *rbuff = (BYTE*)buff;
2669 
+
2670 
+
2671 
+	*br = 0;	/* Clear read byte counter */
2672 
+
2673 
+	res = validate(fp);							/* Check validity */
2674 
+	if (res != FR_OK) LEAVE_FF(fp->fs, res);
2675 
+	if (fp->err)								/* Check error */
2676 
+		LEAVE_FF(fp->fs, (FRESULT)fp->err);
2677 
+	if (!(fp->flag & FA_READ)) 					/* Check access mode */
2678 
+		LEAVE_FF(fp->fs, FR_DENIED);
2679 
+	remain = fp->fsize - fp->fptr;
2680 
+	if (btr > remain) btr = (UINT)remain;		/* Truncate btr by remaining bytes */
2681 
+
2682 
+	for ( ;  btr;								/* Repeat until all data read */
2683 
+		rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
2684 
+		if ((fp->fptr % SS(fp->fs)) == 0) {		/* On the sector boundary? */
2685 
+			csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */
2686 
+			if (!csect) {						/* On the cluster boundary? */
2687 
+				if (fp->fptr == 0) {			/* On the top of the file? */
2688 
+					clst = fp->sclust;			/* Follow from the origin */
2689 
+				} else {						/* Middle or end of the file */
2690 
+#if _USE_FASTSEEK
2691 
+					if (fp->cltbl)
2692 
+						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */
2693 
+					else
2694 
+#endif
2695 
+						clst = get_fat(fp->fs, fp->clust);	/* Follow cluster chain on the FAT */
2696 
+				}
2697 
+				if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
2698 
+				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2699 
+				fp->clust = clst;				/* Update current cluster */
2700 
+			}
2701 
+			sect = clust2sect(fp->fs, fp->clust);	/* Get current sector */
2702 
+			if (!sect) ABORT(fp->fs, FR_INT_ERR);
2703 
+			sect += csect;
2704 
+			cc = btr / SS(fp->fs);				/* When remaining bytes >= sector size, */
2705 
+			if (cc) {							/* Read maximum contiguous sectors directly */
2706 
+				if (csect + cc > fp->fs->csize)	/* Clip at cluster boundary */
2707 
+					cc = fp->fs->csize - csect;
2708 
+				if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)
2709 
+					ABORT(fp->fs, FR_DISK_ERR);
2710 
+#if !_FS_READONLY && _FS_MINIMIZE <= 2			/* Replace one of the read sectors with cached data if it contains a dirty sector */
2711 
+#if _FS_TINY
2712 
+				if (fp->fs->wflag && fp->fs->winsect - sect < cc)
2713 
+					mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win.d8, SS(fp->fs));
2714 
+#else
2715 
+				if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
2716 
+					mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf.d8, SS(fp->fs));
2717 
+#endif
2718 
+#endif
2719 
+				rcnt = SS(fp->fs) * cc;			/* Number of bytes transferred */
2720 
+				continue;
2721 
+			}
2722 
+#if !_FS_TINY
2723 
+			if (fp->dsect != sect) {			/* Load data sector if not in cache */
2724 
+#if !_FS_READONLY
2725 
+				if (fp->flag & FA__DIRTY) {		/* Write-back dirty sector cache */
2726 
+					if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
2727 
+						ABORT(fp->fs, FR_DISK_ERR);
2728 
+					fp->flag &= ~FA__DIRTY;
2729 
+				}
2730 
+#endif
2731 
+				if (disk_read(fp->fs->drv, fp->buf.d8, sect, 1) != RES_OK)	/* Fill sector cache */
2732 
+					ABORT(fp->fs, FR_DISK_ERR);
2733 
+			}
2734 
+#endif
2735 
+			fp->dsect = sect;
2736 
+		}
2737 
+		rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));	/* Get partial sector data from sector buffer */
2738 
+		if (rcnt > btr) rcnt = btr;
2739 
+#if _FS_TINY
2740 
+		if (move_window(fp->fs, fp->dsect) != FR_OK)		/* Move sector window */
2741 
+			ABORT(fp->fs, FR_DISK_ERR);
2742 
+		mem_cpy(rbuff, &fp->fs->win.d8[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */
2743 
+#else
2744 
+		mem_cpy(rbuff, &fp->buf.d8[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */
2745 
+#endif
2746 
+	}
2747 
+
2748 
+	LEAVE_FF(fp->fs, FR_OK);
2749 
+}
2750 
+
2751 
+
2752 
+
2753 
+
2754 
+#if !_FS_READONLY
2755 
+/*-----------------------------------------------------------------------*/
2756 
+/* Write File                                                            */
2757 
+/*-----------------------------------------------------------------------*/
2758 
+
2759 
+FRESULT f_write (
2760 
+	FIL* fp,			/* Pointer to the file object */
2761 
+	const void *buff,	/* Pointer to the data to be written */
2762 
+	UINT btw,			/* Number of bytes to write */
2763 
+	UINT* bw			/* Pointer to number of bytes written */
2764 
+)
2765 
+{
2766 
+	FRESULT res;
2767 
+	DWORD clst, sect;
2768 
+	UINT wcnt, cc;
2769 
+	const BYTE *wbuff = (const BYTE*)buff;
2770 
+	BYTE csect;
2771 
+
2772 
+
2773 
+	*bw = 0;	/* Clear write byte counter */
2774 
+
2775 
+	res = validate(fp);						/* Check validity */
2776 
+	if (res != FR_OK) LEAVE_FF(fp->fs, res);
2777 
+	if (fp->err)							/* Check error */
2778 
+		LEAVE_FF(fp->fs, (FRESULT)fp->err);
2779 
+	if (!(fp->flag & FA_WRITE))				/* Check access mode */
2780 
+		LEAVE_FF(fp->fs, FR_DENIED);
2781 
+	if (fp->fptr + btw < fp->fptr) btw = 0;	/* File size cannot reach 4GB */
2782 
+
2783 
+	for ( ;  btw;							/* Repeat until all data written */
2784 
+		wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
2785 
+		if ((fp->fptr % SS(fp->fs)) == 0) {	/* On the sector boundary? */
2786 
+			csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */
2787 
+			if (!csect) {					/* On the cluster boundary? */
2788 
+				if (fp->fptr == 0) {		/* On the top of the file? */
2789 
+					clst = fp->sclust;		/* Follow from the origin */
2790 
+					if (clst == 0)			/* When no cluster is allocated, */
2791 
+						clst = create_chain(fp->fs, 0);	/* Create a new cluster chain */
2792 
+				} else {					/* Middle or end of the file */
2793 
+#if _USE_FASTSEEK
2794 
+					if (fp->cltbl)
2795 
+						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */
2796 
+					else
2797 
+#endif
2798 
+						clst = create_chain(fp->fs, fp->clust);	/* Follow or stretch cluster chain on the FAT */
2799 
+				}
2800 
+				if (clst == 0) break;		/* Could not allocate a new cluster (disk full) */
2801 
+				if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
2802 
+				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2803 
+				fp->clust = clst;			/* Update current cluster */
2804 
+				if (fp->sclust == 0) fp->sclust = clst;	/* Set start cluster if the first write */
2805 
+			}
2806 
+#if _FS_TINY
2807 
+			if (fp->fs->winsect == fp->dsect && sync_window(fp->fs))	/* Write-back sector cache */
2808 
+				ABORT(fp->fs, FR_DISK_ERR);
2809 
+#else
2810 
+			if (fp->flag & FA__DIRTY) {		/* Write-back sector cache */
2811 
+				if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
2812 
+					ABORT(fp->fs, FR_DISK_ERR);
2813 
+				fp->flag &= ~FA__DIRTY;
2814 
+			}
2815 
+#endif
2816 
+			sect = clust2sect(fp->fs, fp->clust);	/* Get current sector */
2817 
+			if (!sect) ABORT(fp->fs, FR_INT_ERR);
2818 
+			sect += csect;
2819 
+			cc = btw / SS(fp->fs);			/* When remaining bytes >= sector size, */
2820 
+			if (cc) {						/* Write maximum contiguous sectors directly */
2821 
+				if (csect + cc > fp->fs->csize)	/* Clip at cluster boundary */
2822 
+					cc = fp->fs->csize - csect;
2823 
+				if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)
2824 
+					ABORT(fp->fs, FR_DISK_ERR);
2825 
+#if _FS_MINIMIZE <= 2
2826 
+#if _FS_TINY
2827 
+				if (fp->fs->winsect - sect < cc) {	/* Refill sector cache if it gets invalidated by the direct write */
2828 
+					mem_cpy(fp->fs->win.d8, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
2829 
+					fp->fs->wflag = 0;
2830 
+				}
2831 
+#else
2832 
+				if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
2833 
+					mem_cpy(fp->buf.d8, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
2834 
+					fp->flag &= ~FA__DIRTY;
2835 
+				}
2836 
+#endif
2837 
+#endif
2838 
+				wcnt = SS(fp->fs) * cc;		/* Number of bytes transferred */
2839 
+				continue;
2840 
+			}
2841 
+#if _FS_TINY
2842 
+			if (fp->fptr >= fp->fsize) {	/* Avoid silly cache filling at growing edge */
2843 
+				if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);
2844 
+				fp->fs->winsect = sect;
2845 
+			}
2846 
+#else
2847 
+			if (fp->dsect != sect) {		/* Fill sector cache with file data */
2848 
+				if (fp->fptr < fp->fsize &&
2849 
+					disk_read(fp->fs->drv, fp->buf.d8, sect, 1) != RES_OK)
2850 
+						ABORT(fp->fs, FR_DISK_ERR);
2851 
+			}
2852 
+#endif
2853 
+			fp->dsect = sect;
2854 
+		}
2855 
+		wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
2856 
+		if (wcnt > btw) wcnt = btw;
2857 
+#if _FS_TINY
2858 
+		if (move_window(fp->fs, fp->dsect) != FR_OK)	/* Move sector window */
2859 
+			ABORT(fp->fs, FR_DISK_ERR);
2860 
+		mem_cpy(&fp->fs->win.d8[fp->fptr % SS(fp->fs)], wbuff, wcnt);	/* Fit partial sector */
2861 
+		fp->fs->wflag = 1;
2862 
+#else
2863 
+		mem_cpy(&fp->buf.d8[fp->fptr % SS(fp->fs)], wbuff, wcnt);	/* Fit partial sector */
2864 
+		fp->flag |= FA__DIRTY;
2865 
+#endif
2866 
+	}
2867 
+
2868 
+	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr;	/* Update file size if needed */
2869 
+	fp->flag |= FA__WRITTEN;						/* Set file change flag */
2870 
+
2871 
+	LEAVE_FF(fp->fs, FR_OK);
2872 
+}
2873 
+
2874 
+
2875 
+
2876 
+
2877 
+/*-----------------------------------------------------------------------*/
2878 
+/* Synchronize the File                                                  */
2879 
+/*-----------------------------------------------------------------------*/
2880 
+
2881 
+FRESULT f_sync (
2882 
+	FIL* fp		/* Pointer to the file object */
2883 
+)
2884 
+{
2885 
+	FRESULT res;
2886 
+	DWORD tm;
2887 
+	BYTE *dir;
2888 
+
2889 
+
2890 
+	res = validate(fp);					/* Check validity of the object */
2891 
+	if (res == FR_OK) {
2892 
+		if (fp->flag & FA__WRITTEN) {	/* Has the file been written? */
2893 
+			/* Write-back dirty buffer */
2894 
+#if !_FS_TINY
2895 
+			if (fp->flag & FA__DIRTY) {
2896 
+				if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
2897 
+					LEAVE_FF(fp->fs, FR_DISK_ERR);
2898 
+				fp->flag &= ~FA__DIRTY;
2899 
+			}
2900 
+#endif
2901 
+			/* Update the directory entry */
2902 
+			res = move_window(fp->fs, fp->dir_sect);
2903 
+			if (res == FR_OK) {
2904 
+				dir = fp->dir_ptr;
2905 
+				dir[DIR_Attr] |= AM_ARC;					/* Set archive bit */
2906 
+				ST_DWORD(dir + DIR_FileSize, fp->fsize);	/* Update file size */
2907 
+				st_clust(dir, fp->sclust);					/* Update start cluster */
2908 
+				tm = GET_FATTIME();							/* Update updated time */
2909 
+				ST_DWORD(dir + DIR_WrtTime, tm);
2910 
+				ST_WORD(dir + DIR_LstAccDate, 0);
2911 
+				fp->flag &= ~FA__WRITTEN;
2912 
+				fp->fs->wflag = 1;
2913 
+				res = sync_fs(fp->fs);
2914 
+			}
2915 
+		}
2916 
+	}
2917 
+
2918 
+	LEAVE_FF(fp->fs, res);
2919 
+}
2920 
+
2921 
+#endif /* !_FS_READONLY */
2922 
+
2923 
+
2924 
+
2925 
+
2926 
+/*-----------------------------------------------------------------------*/
2927 
+/* Close File                                                            */
2928 
+/*-----------------------------------------------------------------------*/
2929 
+
2930 
+FRESULT f_close (
2931 
+	FIL *fp		/* Pointer to the file object to be closed */
2932 
+)
2933 
+{
2934 
+	FRESULT res;
2935 
+
2936 
+
2937 
+#if !_FS_READONLY
2938 
+	res = f_sync(fp);					/* Flush cached data */
2939 
+	if (res == FR_OK)
2940 
+#endif
2941 
+	{
2942 
+		res = validate(fp);				/* Lock volume */
2943 
+		if (res == FR_OK) {
2944 
+#if _FS_REENTRANT
2945 
+			FATFS *fs = fp->fs;
2946 
+#endif
2947 
+#if _FS_LOCK
2948 
+			res = dec_lock(fp->lockid);	/* Decrement file open counter */
2949 
+			if (res == FR_OK)
2950 
+#endif
2951 
+				fp->fs = 0;				/* Invalidate file object */
2952 
+#if _FS_REENTRANT
2953 
+			unlock_fs(fs, FR_OK);		/* Unlock volume */
2954 
+#endif
2955 
+		}
2956 
+	}
2957 
+	return res;
2958 
+}
2959 
+
2960 
+
2961 
+
2962 
+
2963 
+/*-----------------------------------------------------------------------*/
2964 
+/* Change Current Directory or Current Drive, Get Current Directory      */
2965 
+/*-----------------------------------------------------------------------*/
2966 
+
2967 
+#if _FS_RPATH >= 1
2968 
+#if _VOLUMES >= 2
2969 
+FRESULT f_chdrive (
2970 
+	const TCHAR* path		/* Drive number */
2971 
+)
2972 
+{
2973 
+	int vol;
2974 
+
2975 
+
2976 
+	vol = get_ldnumber(&path);
2977 
+	if (vol < 0) return FR_INVALID_DRIVE;
2978 
+
2979 
+	CurrVol = (BYTE)vol;
2980 
+
2981 
+	return FR_OK;
2982 
+}
2983 
+#endif
2984 
+
2985 
+
2986 
+FRESULT f_chdir (
2987 
+	const TCHAR* path	/* Pointer to the directory path */
2988 
+)
2989 
+{
2990 
+	FRESULT res;
2991 
+	DIR dj;
2992 
+	DEFINE_NAMEBUF;
2993 
+
2994 
+
2995 
+	/* Get logical drive number */
2996 
+	res = find_volume(&dj.fs, &path, 0);
2997 
+	if (res == FR_OK) {
2998 
+		INIT_BUF(dj);
2999 
+		res = follow_path(&dj, path);		/* Follow the path */
3000 
+		FREE_BUF();
3001 
+		if (res == FR_OK) {					/* Follow completed */
3002 
+			if (!dj.dir) {
3003 
+				dj.fs->cdir = dj.sclust;	/* Start directory itself */
3004 
+			} else {
3005 
+				if (dj.dir[DIR_Attr] & AM_DIR)	/* Reached to the directory */
3006 
+					dj.fs->cdir = ld_clust(dj.fs, dj.dir);
3007 
+				else
3008 
+					res = FR_NO_PATH;		/* Reached but a file */
3009 
+			}
3010 
+		}
3011 
+		if (res == FR_NO_FILE) res = FR_NO_PATH;
3012 
+	}
3013 
+
3014 
+	LEAVE_FF(dj.fs, res);
3015 
+}
3016 
+
3017 
+
3018 
+#if _FS_RPATH >= 2
3019 
+FRESULT f_getcwd (
3020 
+	TCHAR* buff,	/* Pointer to the directory path */
3021 
+	UINT len		/* Size of path */
3022 
+)
3023 
+{
3024 
+	FRESULT res;
3025 
+	DIR dj;
3026 
+	UINT i, n;
3027 
+	DWORD ccl;
3028 
+	TCHAR *tp;
3029 
+	FILINFO fno;
3030 
+	DEFINE_NAMEBUF;
3031 
+
3032 
+
3033 
+	*buff = 0;
3034 
+	/* Get logical drive number */
3035 
+	res = find_volume(&dj.fs, (const TCHAR**)&buff, 0);	/* Get current volume */
3036 
+	if (res == FR_OK) {
3037 
+		INIT_BUF(dj);
3038 
+		i = len;			/* Bottom of buffer (directory stack base) */
3039 
+		dj.sclust = dj.fs->cdir;			/* Start to follow upper directory from current directory */
3040 
+		while ((ccl = dj.sclust) != 0) {	/* Repeat while current directory is a sub-directory */
3041 
+			res = dir_sdi(&dj, 1);			/* Get parent directory */
3042 
+			if (res != FR_OK) break;
3043 
+			res = dir_read(&dj, 0);
3044 
+			if (res != FR_OK) break;
3045 
+			dj.sclust = ld_clust(dj.fs, dj.dir);	/* Goto parent directory */
3046 
+			res = dir_sdi(&dj, 0);
3047 
+			if (res != FR_OK) break;
3048 
+			do {							/* Find the entry links to the child directory */
3049 
+				res = dir_read(&dj, 0);
3050 
+				if (res != FR_OK) break;
3051 
+				if (ccl == ld_clust(dj.fs, dj.dir)) break;	/* Found the entry */
3052 
+				res = dir_next(&dj, 0);
3053 
+			} while (res == FR_OK);
3054 
+			if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
3055 
+			if (res != FR_OK) break;
3056 
+#if _USE_LFN
3057 
+			fno.lfname = buff;
3058 
+			fno.lfsize = i;
3059 
+#endif
3060 
+			get_fileinfo(&dj, &fno);		/* Get the directory name and push it to the buffer */
3061 
+			tp = fno.fname;
3062 
+#if _USE_LFN
3063 
+			if (*buff) tp = buff;
3064 
+#endif
3065 
+			for (n = 0; tp[n]; n++) ;
3066 
+			if (i < n + 3) {
3067 
+				res = FR_NOT_ENOUGH_CORE; break;
3068 
+			}
3069 
+			while (n) buff[--i] = tp[--n];
3070 
+			buff[--i] = '/';
3071 
+		}
3072 
+		tp = buff;
3073 
+		if (res == FR_OK) {
3074 
+#if _VOLUMES >= 2
3075 
+			*tp++ = '0' + CurrVol;			/* Put drive number */
3076 
+			*tp++ = ':';
3077 
+#endif
3078 
+			if (i == len) {					/* Root-directory */
3079 
+				*tp++ = '/';
3080 
+			} else {						/* Sub-directroy */
3081 
+				do		/* Add stacked path str */
3082 
+					*tp++ = buff[i++];
3083 
+				while (i < len);
3084 
+			}
3085 
+		}
3086 
+		*tp = 0;
3087 
+		FREE_BUF();
3088 
+	}
3089 
+
3090 
+	LEAVE_FF(dj.fs, res);
3091 
+}
3092 
+#endif /* _FS_RPATH >= 2 */
3093 
+#endif /* _FS_RPATH >= 1 */
3094 
+
3095 
+
3096 
+
3097 
+#if _FS_MINIMIZE <= 2
3098 
+/*-----------------------------------------------------------------------*/
3099 
+/* Seek File R/W Pointer                                                 */
3100 
+/*-----------------------------------------------------------------------*/
3101 
+
3102 
+FRESULT f_lseek (
3103 
+	FIL* fp,		/* Pointer to the file object */
3104 
+	DWORD ofs		/* File pointer from top of file */
3105 
+)
3106 
+{
3107 
+	FRESULT res;
3108 
+	DWORD clst, bcs, nsect, ifptr;
3109 
+#if _USE_FASTSEEK
3110 
+	DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
3111 
+#endif
3112 
+
3113 
+
3114 
+	res = validate(fp);					/* Check validity of the object */
3115 
+	if (res != FR_OK) LEAVE_FF(fp->fs, res);
3116 
+	if (fp->err)						/* Check error */
3117 
+		LEAVE_FF(fp->fs, (FRESULT)fp->err);
3118 
+
3119 
+#if _USE_FASTSEEK
3120 
+	if (fp->cltbl) {	/* Fast seek */
3121 
+		if (ofs == CREATE_LINKMAP) {	/* Create CLMT */
3122 
+			tbl = fp->cltbl;
3123 
+			tlen = *tbl++; ulen = 2;	/* Given table size and required table size */
3124 
+			cl = fp->sclust;			/* Top of the chain */
3125 
+			if (cl) {
3126 
+				do {
3127 
+					/* Get a fragment */
3128 
+					tcl = cl; ncl = 0; ulen += 2;	/* Top, length and used items */
3129 
+					do {
3130 
+						pcl = cl; ncl++;
3131 
+						cl = get_fat(fp->fs, cl);
3132 
+						if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
3133 
+						if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
3134 
+					} while (cl == pcl + 1);
3135 
+					if (ulen <= tlen) {		/* Store the length and top of the fragment */
3136 
+						*tbl++ = ncl; *tbl++ = tcl;
3137 
+					}
3138 
+				} while (cl < fp->fs->n_fatent);	/* Repeat until end of chain */
3139 
+			}
3140 
+			*fp->cltbl = ulen;	/* Number of items used */
3141 
+			if (ulen <= tlen)
3142 
+				*tbl = 0;		/* Terminate table */
3143 
+			else
3144 
+				res = FR_NOT_ENOUGH_CORE;	/* Given table size is smaller than required */
3145 
+
3146 
+		} else {						/* Fast seek */
3147 
+			if (ofs > fp->fsize)		/* Clip offset at the file size */
3148 
+				ofs = fp->fsize;
3149 
+			fp->fptr = ofs;				/* Set file pointer */
3150 
+			if (ofs) {
3151 
+				fp->clust = clmt_clust(fp, ofs - 1);
3152 
+				dsc = clust2sect(fp->fs, fp->clust);
3153 
+				if (!dsc) ABORT(fp->fs, FR_INT_ERR);
3154 
+				dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
3155 
+				if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {	/* Refill sector cache if needed */
3156 
+#if !_FS_TINY
3157 
+#if !_FS_READONLY
3158 
+					if (fp->flag & FA__DIRTY) {		/* Write-back dirty sector cache */
3159 
+						if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
3160 
+							ABORT(fp->fs, FR_DISK_ERR);
3161 
+						fp->flag &= ~FA__DIRTY;
3162 
+					}
3163 
+#endif
3164 
+					if (disk_read(fp->fs->drv, fp->buf.d8, dsc, 1) != RES_OK)	/* Load current sector */
3165 
+						ABORT(fp->fs, FR_DISK_ERR);
3166 
+#endif
3167 
+					fp->dsect = dsc;
3168 
+				}
3169 
+			}
3170 
+		}
3171 
+	} else
3172 
+#endif
3173 
+
3174 
+	/* Normal Seek */
3175 
+	{
3176 
+		if (ofs > fp->fsize					/* In read-only mode, clip offset with the file size */
3177 
+#if !_FS_READONLY
3178 
+			 && !(fp->flag & FA_WRITE)
3179 
+#endif
3180 
+			) ofs = fp->fsize;
3181 
+
3182 
+		ifptr = fp->fptr;
3183 
+		fp->fptr = nsect = 0;
3184 
+		if (ofs) {
3185 
+			bcs = (DWORD)fp->fs->csize * SS(fp->fs);	/* Cluster size (byte) */
3186 
+			if (ifptr > 0 &&
3187 
+				(ofs - 1) / bcs >= (ifptr - 1) / bcs) {	/* When seek to same or following cluster, */
3188 
+				fp->fptr = (ifptr - 1) & ~(bcs - 1);	/* start from the current cluster */
3189 
+				ofs -= fp->fptr;
3190 
+				clst = fp->clust;
3191 
+			} else {									/* When seek to back cluster, */
3192 
+				clst = fp->sclust;						/* start from the first cluster */
3193 
+#if !_FS_READONLY
3194 
+				if (clst == 0) {						/* If no cluster chain, create a new chain */
3195 
+					clst = create_chain(fp->fs, 0);
3196 
+					if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
3197 
+					if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
3198 
+					fp->sclust = clst;
3199 
+				}
3200 
+#endif
3201 
+				fp->clust = clst;
3202 
+			}
3203 
+			if (clst != 0) {
3204 
+				while (ofs > bcs) {						/* Cluster following loop */
3205 
+#if !_FS_READONLY
3206 
+					if (fp->flag & FA_WRITE) {			/* Check if in write mode or not */
3207 
+						clst = create_chain(fp->fs, clst);	/* Force stretch if in write mode */
3208 
+						if (clst == 0) {				/* When disk gets full, clip file size */
3209 
+							ofs = bcs; break;
3210 
+						}
3211 
+					} else
3212 
+#endif
3213 
+						clst = get_fat(fp->fs, clst);	/* Follow cluster chain if not in write mode */
3214 
+					if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
3215 
+					if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
3216 
+					fp->clust = clst;
3217 
+					fp->fptr += bcs;
3218 
+					ofs -= bcs;
3219 
+				}
3220 
+				fp->fptr += ofs;
3221 
+				if (ofs % SS(fp->fs)) {
3222 
+					nsect = clust2sect(fp->fs, clst);	/* Current sector */
3223 
+					if (!nsect) ABORT(fp->fs, FR_INT_ERR);
3224 
+					nsect += ofs / SS(fp->fs);
3225 
+				}
3226 
+			}
3227 
+		}
3228 
+		if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {	/* Fill sector cache if needed */
3229 
+#if !_FS_TINY
3230 
+#if !_FS_READONLY
3231 
+			if (fp->flag & FA__DIRTY) {			/* Write-back dirty sector cache */
3232 
+				if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
3233 
+					ABORT(fp->fs, FR_DISK_ERR);
3234 
+				fp->flag &= ~FA__DIRTY;
3235 
+			}
3236 
+#endif
3237 
+			if (disk_read(fp->fs->drv, fp->buf.d8, nsect, 1) != RES_OK)	/* Fill sector cache */
3238 
+				ABORT(fp->fs, FR_DISK_ERR);
3239 
+#endif
3240 
+			fp->dsect = nsect;
3241 
+		}
3242 
+#if !_FS_READONLY
3243 
+		if (fp->fptr > fp->fsize) {			/* Set file change flag if the file size is extended */
3244 
+			fp->fsize = fp->fptr;
3245 
+			fp->flag |= FA__WRITTEN;
3246 
+		}
3247 
+#endif
3248 
+	}
3249 
+
3250 
+	LEAVE_FF(fp->fs, res);
3251 
+}
3252 
+
3253 
+
3254 
+
3255 
+#if _FS_MINIMIZE <= 1
3256 
+/*-----------------------------------------------------------------------*/
3257 
+/* Create a Directory Object                                             */
3258 
+/*-----------------------------------------------------------------------*/
3259 
+
3260 
+FRESULT f_opendir (
3261 
+	DIR* dp,			/* Pointer to directory object to create */
3262 
+	const TCHAR* path	/* Pointer to the directory path */
3263 
+)
3264 
+{
3265 
+	FRESULT res;
3266 
+	FATFS* fs;
3267 
+	DEFINE_NAMEBUF;
3268 
+
3269 
+
3270 
+	if (!dp) return FR_INVALID_OBJECT;
3271 
+
3272 
+	/* Get logical drive number */
3273 
+	res = find_volume(&fs, &path, 0);
3274 
+	if (res == FR_OK) {
3275 
+		dp->fs = fs;
3276 
+		INIT_BUF(*dp);
3277 
+		res = follow_path(dp, path);			/* Follow the path to the directory */
3278 
+		FREE_BUF();
3279 
+		if (res == FR_OK) {						/* Follow completed */
3280 
+			if (dp->dir) {						/* It is not the origin directory itself */
3281 
+				if (dp->dir[DIR_Attr] & AM_DIR)	/* The object is a sub directory */
3282 
+					dp->sclust = ld_clust(fs, dp->dir);
3283 
+				else							/* The object is a file */
3284 
+					res = FR_NO_PATH;
3285 
+			}
3286 
+			if (res == FR_OK) {
3287 
+				dp->id = fs->id;
3288 
+				res = dir_sdi(dp, 0);			/* Rewind directory */
3289 
+#if _FS_LOCK
3290 
+				if (res == FR_OK) {
3291 
+					if (dp->sclust) {
3292 
+						dp->lockid = inc_lock(dp, 0);	/* Lock the sub directory */
3293 
+						if (!dp->lockid)
3294 
+							res = FR_TOO_MANY_OPEN_FILES;
3295 
+					} else {
3296 
+						dp->lockid = 0;	/* Root directory need not to be locked */
3297 
+					}
3298 
+				}
3299 
+#endif
3300 
+			}
3301 
+		}
3302 
+		if (res == FR_NO_FILE) res = FR_NO_PATH;
3303 
+	}
3304 
+	if (res != FR_OK) dp->fs = 0;		/* Invalidate the directory object if function faild */
3305 
+
3306 
+	LEAVE_FF(fs, res);
3307 
+}
3308 
+
3309 
+
3310 
+
3311 
+
3312 
+/*-----------------------------------------------------------------------*/
3313 
+/* Close Directory                                                       */
3314 
+/*-----------------------------------------------------------------------*/
3315 
+
3316 
+FRESULT f_closedir (
3317 
+	DIR *dp		/* Pointer to the directory object to be closed */
3318 
+)
3319 
+{
3320 
+	FRESULT res;
3321 
+
3322 
+
3323 
+	res = validate(dp);
3324 
+	if (res == FR_OK) {
3325 
+#if _FS_REENTRANT
3326 
+		FATFS *fs = dp->fs;
3327 
+#endif
3328 
+#if _FS_LOCK
3329 
+		if (dp->lockid)				/* Decrement sub-directory open counter */
3330 
+			res = dec_lock(dp->lockid);
3331 
+		if (res == FR_OK)
3332 
+#endif
3333 
+			dp->fs = 0;				/* Invalidate directory object */
3334 
+#if _FS_REENTRANT
3335 
+		unlock_fs(fs, FR_OK);		/* Unlock volume */
3336 
+#endif
3337 
+	}
3338 
+	return res;
3339 
+}
3340 
+
3341 
+
3342 
+
3343 
+
3344 
+/*-----------------------------------------------------------------------*/
3345 
+/* Read Directory Entries in Sequence                                    */
3346 
+/*-----------------------------------------------------------------------*/
3347 
+
3348 
+FRESULT f_readdir (
3349 
+	DIR* dp,			/* Pointer to the open directory object */
3350 
+	FILINFO* fno		/* Pointer to file information to return */
3351 
+)
3352 
+{
3353 
+	FRESULT res;
3354 
+	DEFINE_NAMEBUF;
3355 
+
3356 
+
3357 
+	res = validate(dp);						/* Check validity of the object */
3358 
+	if (res == FR_OK) {
3359 
+		if (!fno) {
3360 
+			res = dir_sdi(dp, 0);			/* Rewind the directory object */
3361 
+		} else {
3362 
+			INIT_BUF(*dp);
3363 
+			res = dir_read(dp, 0);			/* Read an item */
3364 
+			if (res == FR_NO_FILE) {		/* Reached end of directory */
3365 
+				dp->sect = 0;
3366 
+				res = FR_OK;
3367 
+			}
3368 
+			if (res == FR_OK) {				/* A valid entry is found */
3369 
+				get_fileinfo(dp, fno);		/* Get the object information */
3370 
+				res = dir_next(dp, 0);		/* Increment index for next */
3371 
+				if (res == FR_NO_FILE) {
3372 
+					dp->sect = 0;
3373 
+					res = FR_OK;
3374 
+				}
3375 
+			}
3376 
+			FREE_BUF();
3377 
+		}
3378 
+	}
3379 
+
3380 
+	LEAVE_FF(dp->fs, res);
3381 
+}
3382 
+
3383 
+
3384 
+
3385 
+#if _USE_FIND
3386 
+/*-----------------------------------------------------------------------*/
3387 
+/* Find next file                                                        */
3388 
+/*-----------------------------------------------------------------------*/
3389 
+
3390 
+FRESULT f_findnext (
3391 
+	DIR* dp,		/* Pointer to the open directory object */
3392 
+	FILINFO* fno	/* Pointer to the file information structure */
3393 
+)
3394 
+{
3395 
+	FRESULT res;
3396 
+
3397 
+
3398 
+	for (;;) {
3399 
+		res = f_readdir(dp, fno);		/* Get a directory item */
3400 
+		if (res != FR_OK || !fno || !fno->fname[0]) break;	/* Terminate if any error or end of directory */
3401 
+#if _USE_LFN
3402 
+		if (fno->lfname && pattern_matching(dp->pat, fno->lfname, 0, 0)) break;	/* Test for LFN if exist */
3403 
+#endif
3404 
+		if (pattern_matching(dp->pat, fno->fname, 0, 0)) break;	/* Test for SFN */
3405 
+	}
3406 
+	return res;
3407 
+
3408 
+}
3409 
+
3410 
+
3411 
+
3412 
+/*-----------------------------------------------------------------------*/
3413 
+/* Find first file                                                       */
3414 
+/*-----------------------------------------------------------------------*/
3415 
+
3416 
+FRESULT f_findfirst (
3417 
+	DIR* dp,				/* Pointer to the blank directory object */
3418 
+	FILINFO* fno,			/* Pointer to the file information structure */
3419 
+	const TCHAR* path,		/* Pointer to the directory to open */
3420 
+	const TCHAR* pattern	/* Pointer to the matching pattern */
3421 
+)
3422 
+{
3423 
+	FRESULT res;
3424 
+
3425 
+
3426 
+	dp->pat = pattern;		/* Save pointer to pattern string */
3427 
+	res = f_opendir(dp, path);		/* Open the target directory */
3428 
+	if (res == FR_OK)
3429 
+		res = f_findnext(dp, fno);	/* Find the first item */
3430 
+	return res;
3431 
+}
3432 
+
3433 
+#endif	/* _USE_FIND */
3434 
+
3435 
+
3436 
+
3437 
+#if _FS_MINIMIZE == 0
3438 
+/*-----------------------------------------------------------------------*/
3439 
+/* Get File Status                                                       */
3440 
+/*-----------------------------------------------------------------------*/
3441 
+
3442 
+FRESULT f_stat (
3443 
+	const TCHAR* path,	/* Pointer to the file path */
3444 
+	FILINFO* fno		/* Pointer to file information to return */
3445 
+)
3446 
+{
3447 
+	FRESULT res;
3448 
+	DIR dj;
3449 
+	DEFINE_NAMEBUF;
3450 
+
3451 
+
3452 
+	/* Get logical drive number */
3453 
+	res = find_volume(&dj.fs, &path, 0);
3454 
+	if (res == FR_OK) {
3455 
+		INIT_BUF(dj);
3456 
+		res = follow_path(&dj, path);	/* Follow the file path */
3457 
+		if (res == FR_OK) {				/* Follow completed */
3458 
+			if (dj.dir) {		/* Found an object */
3459 
+				if (fno) get_fileinfo(&dj, fno);
3460 
+			} else {			/* It is root directory */
3461 
+				res = FR_INVALID_NAME;
3462 
+			}
3463 
+		}
3464 
+		FREE_BUF();
3465 
+	}
3466 
+
3467 
+	LEAVE_FF(dj.fs, res);
3468 
+}
3469 
+
3470 
+
3471 
+
3472 
+#if !_FS_READONLY
3473 
+/*-----------------------------------------------------------------------*/
3474 
+/* Get Number of Free Clusters                                           */
3475 
+/*-----------------------------------------------------------------------*/
3476 
+
3477 
+FRESULT f_getfree (
3478 
+	const TCHAR* path,	/* Path name of the logical drive number */
3479 
+	DWORD* nclst,		/* Pointer to a variable to return number of free clusters */
3480 
+	FATFS** fatfs		/* Pointer to return pointer to corresponding file system object */
3481 
+)
3482 
+{
3483 
+	FRESULT res;
3484 
+	FATFS *fs;
3485 
+	DWORD n, clst, sect, stat;
3486 
+	UINT i;
3487 
+	BYTE fat, *p;
3488 
+
3489 
+
3490 
+	/* Get logical drive number */
3491 
+	res = find_volume(fatfs, &path, 0);
3492 
+	fs = *fatfs;
3493 
+	if (res == FR_OK) {
3494 
+		/* If free_clust is valid, return it without full cluster scan */
3495 
+		if (fs->free_clust <= fs->n_fatent - 2) {
3496 
+			*nclst = fs->free_clust;
3497 
+		} else {
3498 
+			/* Get number of free clusters */
3499 
+			fat = fs->fs_type;
3500 
+			n = 0;
3501 
+			if (fat == FS_FAT12) {
3502 
+				clst = 2;
3503 
+				do {
3504 
+					stat = get_fat(fs, clst);
3505 
+					if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
3506 
+					if (stat == 1) { res = FR_INT_ERR; break; }
3507 
+					if (stat == 0) n++;
3508 
+				} while (++clst < fs->n_fatent);
3509 
+			} else {
3510 
+				clst = fs->n_fatent;
3511 
+				sect = fs->fatbase;
3512 
+				i = 0; p = 0;
3513 
+				do {
3514 
+					if (!i) {
3515 
+						res = move_window(fs, sect++);
3516 
+						if (res != FR_OK) break;
3517 
+						p = fs->win.d8;
3518 
+						i = SS(fs);
3519 
+					}
3520 
+					if (fat == FS_FAT16) {
3521 
+						if (LD_WORD(p) == 0) n++;
3522 
+						p += 2; i -= 2;
3523 
+					} else {
3524 
+						if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
3525 
+						p += 4; i -= 4;
3526 
+					}
3527 
+				} while (--clst);
3528 
+			}
3529 
+			fs->free_clust = n;
3530 
+			fs->fsi_flag |= 1;
3531 
+			*nclst = n;
3532 
+		}
3533 
+	}
3534 
+	LEAVE_FF(fs, res);
3535 
+}
3536 
+
3537 
+
3538 
+
3539 
+
3540 
+/*-----------------------------------------------------------------------*/
3541 
+/* Truncate File                                                         */
3542 
+/*-----------------------------------------------------------------------*/
3543 
+
3544 
+FRESULT f_truncate (
3545 
+	FIL* fp		/* Pointer to the file object */
3546 
+)
3547 
+{
3548 
+	FRESULT res;
3549 
+	DWORD ncl;
3550 
+
3551 
+
3552 
+	res = validate(fp);						/* Check validity of the object */
3553 
+	if (res == FR_OK) {
3554 
+		if (fp->err) {						/* Check error */
3555 
+			res = (FRESULT)fp->err;
3556 
+		} else {
3557 
+			if (!(fp->flag & FA_WRITE))		/* Check access mode */
3558 
+				res = FR_DENIED;
3559 
+		}
3560 
+	}
3561 
+	if (res == FR_OK) {
3562 
+		if (fp->fsize > fp->fptr) {
3563 
+			fp->fsize = fp->fptr;	/* Set file size to current R/W point */
3564 
+			fp->flag |= FA__WRITTEN;
3565 
+			if (fp->fptr == 0) {	/* When set file size to zero, remove entire cluster chain */
3566 
+				res = remove_chain(fp->fs, fp->sclust);
3567 
+				fp->sclust = 0;
3568 
+			} else {				/* When truncate a part of the file, remove remaining clusters */
3569 
+				ncl = get_fat(fp->fs, fp->clust);
3570 
+				res = FR_OK;
3571 
+				if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
3572 
+				if (ncl == 1) res = FR_INT_ERR;
3573 
+				if (res == FR_OK && ncl < fp->fs->n_fatent) {
3574 
+					res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
3575 
+					if (res == FR_OK) res = remove_chain(fp->fs, ncl);
3576 
+				}
3577 
+			}
3578 
+#if !_FS_TINY
3579 
+			if (res == FR_OK && (fp->flag & FA__DIRTY)) {
3580 
+				if (disk_write(fp->fs->drv, fp->buf.d8, fp->dsect, 1) != RES_OK)
3581 
+					res = FR_DISK_ERR;
3582 
+				else
3583 
+					fp->flag &= ~FA__DIRTY;
3584 
+			}
3585 
+#endif
3586 
+		}
3587 
+		if (res != FR_OK) fp->err = (FRESULT)res;
3588 
+	}
3589 
+
3590 
+	LEAVE_FF(fp->fs, res);
3591 
+}
3592 
+
3593 
+
3594 
+
3595 
+
3596 
+/*-----------------------------------------------------------------------*/
3597 
+/* Delete a File or Directory                                            */
3598 
+/*-----------------------------------------------------------------------*/
3599 
+
3600 
+FRESULT f_unlink (
3601 
+	const TCHAR* path		/* Pointer to the file or directory path */
3602 
+)
3603 
+{
3604 
+	FRESULT res;
3605 
+	DIR dj, sdj;
3606 
+	BYTE *dir;
3607 
+	DWORD dclst = 0;
3608 
+	DEFINE_NAMEBUF;
3609 
+
3610 
+
3611 
+	/* Get logical drive number */
3612 
+	res = find_volume(&dj.fs, &path, 1);
3613 
+	if (res == FR_OK) {
3614 
+		INIT_BUF(dj);
3615 
+		res = follow_path(&dj, path);		/* Follow the file path */
3616 
+		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
3617 
+			res = FR_INVALID_NAME;			/* Cannot remove dot entry */
3618 
+#if _FS_LOCK
3619 
+		if (res == FR_OK) res = chk_lock(&dj, 2);	/* Cannot remove open object */
3620 
+#endif
3621 
+		if (res == FR_OK) {					/* The object is accessible */
3622 
+			dir = dj.dir;
3623 
+			if (!dir) {
3624 
+				res = FR_INVALID_NAME;		/* Cannot remove the origin directory */
3625 
+			} else {
3626 
+				if (dir[DIR_Attr] & AM_RDO)
3627 
+					res = FR_DENIED;		/* Cannot remove R/O object */
3628 
+			}
3629 
+			if (res == FR_OK) {
3630 
+				dclst = ld_clust(dj.fs, dir);
3631 
+				if (dclst && (dir[DIR_Attr] & AM_DIR)) {	/* Is it a sub-directory ? */
3632 
+#if _FS_RPATH
3633 
+					if (dclst == dj.fs->cdir) {		 		/* Is it the current directory? */
3634 
+						res = FR_DENIED;
3635 
+					} else
3636 
+#endif
3637 
+					{
3638 
+						mem_cpy(&sdj, &dj, sizeof (DIR));	/* Open the sub-directory */
3639 
+						sdj.sclust = dclst;
3640 
+						res = dir_sdi(&sdj, 2);
3641 
+						if (res == FR_OK) {
3642 
+							res = dir_read(&sdj, 0);			/* Read an item (excluding dot entries) */
3643 
+							if (res == FR_OK) res = FR_DENIED;	/* Not empty? (cannot remove) */
3644 
+							if (res == FR_NO_FILE) res = FR_OK;	/* Empty? (can remove) */
3645 
+						}
3646 
+					}
3647 
+				}
3648 
+			}
3649 
+			if (res == FR_OK) {
3650 
+				res = dir_remove(&dj);		/* Remove the directory entry */
3651 
+				if (res == FR_OK && dclst)	/* Remove the cluster chain if exist */
3652 
+					res = remove_chain(dj.fs, dclst);
3653 
+				if (res == FR_OK) res = sync_fs(dj.fs);
3654 
+			}
3655 
+		}
3656 
+		FREE_BUF();
3657 
+	}
3658 
+
3659 
+	LEAVE_FF(dj.fs, res);
3660 
+}
3661 
+
3662 
+
3663 
+
3664 
+
3665 
+/*-----------------------------------------------------------------------*/
3666 
+/* Create a Directory                                                    */
3667 
+/*-----------------------------------------------------------------------*/
3668 
+
3669 
+FRESULT f_mkdir (
3670 
+	const TCHAR* path		/* Pointer to the directory path */
3671 
+)
3672 
+{
3673 
+	FRESULT res;
3674 
+	DIR dj;
3675 
+	BYTE *dir, n;
3676 
+	DWORD dsc, dcl, pcl, tm = GET_FATTIME();
3677 
+	DEFINE_NAMEBUF;
3678 
+
3679 
+
3680 
+	/* Get logical drive number */
3681 
+	res = find_volume(&dj.fs, &path, 1);
3682 
+	if (res == FR_OK) {
3683 
+		INIT_BUF(dj);
3684 
+		res = follow_path(&dj, path);			/* Follow the file path */
3685 
+		if (res == FR_OK) res = FR_EXIST;		/* Any object with same name is already existing */
3686 
+		if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))
3687 
+			res = FR_INVALID_NAME;
3688 
+		if (res == FR_NO_FILE) {				/* Can create a new directory */
3689 
+			dcl = create_chain(dj.fs, 0);		/* Allocate a cluster for the new directory table */
3690 
+			res = FR_OK;
3691 
+			if (dcl == 0) res = FR_DENIED;		/* No space to allocate a new cluster */
3692 
+			if (dcl == 1) res = FR_INT_ERR;
3693 
+			if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
3694 
+			if (res == FR_OK)					/* Flush FAT */
3695 
+				res = sync_window(dj.fs);
3696 
+			if (res == FR_OK) {					/* Initialize the new directory table */
3697 
+				dsc = clust2sect(dj.fs, dcl);
3698 
+				dir = dj.fs->win.d8;
3699 
+				mem_set(dir, 0, SS(dj.fs));
3700 
+				mem_set(dir + DIR_Name, ' ', 11);	/* Create "." entry */
3701 
+				dir[DIR_Name] = '.';
3702 
+				dir[DIR_Attr] = AM_DIR;
3703 
+				ST_DWORD(dir + DIR_WrtTime, tm);
3704 
+				st_clust(dir, dcl);
3705 
+				mem_cpy(dir + SZ_DIRE, dir, SZ_DIRE); 	/* Create ".." entry */
3706 
+				dir[SZ_DIRE + 1] = '.'; pcl = dj.sclust;
3707 
+				if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
3708 
+					pcl = 0;
3709 
+				st_clust(dir + SZ_DIRE, pcl);
3710 
+				for (n = dj.fs->csize; n; n--) {	/* Write dot entries and clear following sectors */
3711 
+					dj.fs->winsect = dsc++;
3712 
+					dj.fs->wflag = 1;
3713 
+					res = sync_window(dj.fs);
3714 
+					if (res != FR_OK) break;
3715 
+					mem_set(dir, 0, SS(dj.fs));
3716 
+				}
3717 
+			}
3718 
+			if (res == FR_OK) res = dir_register(&dj);	/* Register the object to the directoy */
3719 
+			if (res != FR_OK) {
3720 
+				remove_chain(dj.fs, dcl);			/* Could not register, remove cluster chain */
3721 
+			} else {
3722 
+				dir = dj.dir;
3723 
+				dir[DIR_Attr] = AM_DIR;				/* Attribute */
3724 
+				ST_DWORD(dir + DIR_WrtTime, tm);	/* Created time */
3725 
+				st_clust(dir, dcl);					/* Table start cluster */
3726 
+				dj.fs->wflag = 1;
3727 
+				res = sync_fs(dj.fs);
3728 
+			}
3729 
+		}
3730 
+		FREE_BUF();
3731 
+	}
3732 
+
3733 
+	LEAVE_FF(dj.fs, res);
3734 
+}
3735 
+
3736 
+
3737 
+
3738 
+
3739 
+/*-----------------------------------------------------------------------*/
3740 
+/* Change Attribute                                                      */
3741 
+/*-----------------------------------------------------------------------*/
3742 
+
3743 
+FRESULT f_chmod (
3744 
+	const TCHAR* path,	/* Pointer to the file path */
3745 
+	BYTE attr,			/* Attribute bits */
3746 
+	BYTE mask			/* Attribute mask to change */
3747 
+)
3748 
+{
3749 
+	FRESULT res;
3750 
+	DIR dj;
3751 
+	BYTE *dir;
3752 
+	DEFINE_NAMEBUF;
3753 
+
3754 
+
3755 
+	/* Get logical drive number */
3756 
+	res = find_volume(&dj.fs, &path, 1);
3757 
+	if (res == FR_OK) {
3758 
+		INIT_BUF(dj);
3759 
+		res = follow_path(&dj, path);		/* Follow the file path */
3760 
+		FREE_BUF();
3761 
+		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
3762 
+			res = FR_INVALID_NAME;
3763 
+		if (res == FR_OK) {
3764 
+			dir = dj.dir;
3765 
+			if (!dir) {						/* Is it a root directory? */
3766 
+				res = FR_INVALID_NAME;
3767 
+			} else {						/* File or sub directory */
3768 
+				mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;	/* Valid attribute mask */
3769 
+				dir[DIR_Attr] = (attr & mask) | (dir[DIR_Attr] & (BYTE)~mask);	/* Apply attribute change */
3770 
+				dj.fs->wflag = 1;
3771 
+				res = sync_fs(dj.fs);
3772 
+			}
3773 
+		}
3774 
+	}
3775 
+
3776 
+	LEAVE_FF(dj.fs, res);
3777 
+}
3778 
+
3779 
+
3780 
+
3781 
+
3782 
+/*-----------------------------------------------------------------------*/
3783 
+/* Rename File/Directory                                                 */
3784 
+/*-----------------------------------------------------------------------*/
3785 
+
3786 
+FRESULT f_rename (
3787 
+	const TCHAR* path_old,	/* Pointer to the object to be renamed */
3788 
+	const TCHAR* path_new	/* Pointer to the new name */
3789 
+)
3790 
+{
3791 
+	FRESULT res;
3792 
+	DIR djo, djn;
3793 
+	BYTE buf[21], *dir;
3794 
+	DWORD dw;
3795 
+	DEFINE_NAMEBUF;
3796 
+
3797 
+
3798 
+	/* Get logical drive number of the source object */
3799 
+	res = find_volume(&djo.fs, &path_old, 1);
3800 
+	if (res == FR_OK) {
3801 
+		djn.fs = djo.fs;
3802 
+		INIT_BUF(djo);
3803 
+		res = follow_path(&djo, path_old);		/* Check old object */
3804 
+		if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))
3805 
+			res = FR_INVALID_NAME;
3806 
+#if _FS_LOCK
3807 
+		if (res == FR_OK) res = chk_lock(&djo, 2);
3808 
+#endif
3809 
+		if (res == FR_OK) {						/* Old object is found */
3810 
+			if (!djo.dir) {						/* Is root dir? */
3811 
+				res = FR_NO_FILE;
3812 
+			} else {
3813 
+				mem_cpy(buf, djo.dir + DIR_Attr, 21);	/* Save information about object except name */
3814 
+				mem_cpy(&djn, &djo, sizeof (DIR));		/* Duplicate the directory object */
3815 
+				if (get_ldnumber(&path_new) >= 0)		/* Snip drive number off and ignore it */
3816 
+					res = follow_path(&djn, path_new);	/* and make sure if new object name is not conflicting */
3817 
+				else
3818 
+					res = FR_INVALID_DRIVE;
3819 
+				if (res == FR_OK) res = FR_EXIST;		/* The new object name is already existing */
3820 
+				if (res == FR_NO_FILE) { 				/* It is a valid path and no name collision */
3821 
+					res = dir_register(&djn);			/* Register the new entry */
3822 
+					if (res == FR_OK) {
3823 
+/* Start of critical section where any interruption can cause a cross-link */
3824 
+						dir = djn.dir;					/* Copy information about object except name */
3825 
+						mem_cpy(dir + 13, buf + 2, 19);
3826 
+						dir[DIR_Attr] = buf[0] | AM_ARC;
3827 
+						djo.fs->wflag = 1;
3828 
+						if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) {	/* Update .. entry in the sub-directory if needed */
3829 
+							dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
3830 
+							if (!dw) {
3831 
+								res = FR_INT_ERR;
3832 
+							} else {
3833 
+								res = move_window(djo.fs, dw);
3834 
+								dir = djo.fs->win.d8 + SZ_DIRE * 1;	/* Ptr to .. entry */
3835 
+								if (res == FR_OK && dir[1] == '.') {
3836 
+									st_clust(dir, djn.sclust);
3837 
+									djo.fs->wflag = 1;
3838 
+								}
3839 
+							}
3840 
+						}
3841 
+						if (res == FR_OK) {
3842 
+							res = dir_remove(&djo);		/* Remove old entry */
3843 
+							if (res == FR_OK)
3844 
+								res = sync_fs(djo.fs);
3845 
+						}
3846 
+/* End of critical section */
3847 
+					}
3848 
+				}
3849 
+			}
3850 
+		}
3851 
+		FREE_BUF();
3852 
+	}
3853 
+
3854 
+	LEAVE_FF(djo.fs, res);
3855 
+}
3856 
+
3857 
+
3858 
+
3859 
+
3860 
+/*-----------------------------------------------------------------------*/
3861 
+/* Change Timestamp                                                      */
3862 
+/*-----------------------------------------------------------------------*/
3863 
+
3864 
+FRESULT f_utime (
3865 
+	const TCHAR* path,	/* Pointer to the file/directory name */
3866 
+	const FILINFO* fno	/* Pointer to the time stamp to be set */
3867 
+)
3868 
+{
3869 
+	FRESULT res;
3870 
+	DIR dj;
3871 
+	BYTE *dir;
3872 
+	DEFINE_NAMEBUF;
3873 
+
3874 
+
3875 
+	/* Get logical drive number */
3876 
+	res = find_volume(&dj.fs, &path, 1);
3877 
+	if (res == FR_OK) {
3878 
+		INIT_BUF(dj);
3879 
+		res = follow_path(&dj, path);	/* Follow the file path */
3880 
+		FREE_BUF();
3881 
+		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
3882 
+			res = FR_INVALID_NAME;
3883 
+		if (res == FR_OK) {
3884 
+			dir = dj.dir;
3885 
+			if (!dir) {					/* Root directory */
3886 
+				res = FR_INVALID_NAME;
3887 
+			} else {					/* File or sub-directory */
3888 
+				ST_WORD(dir + DIR_WrtTime, fno->ftime);
3889 
+				ST_WORD(dir + DIR_WrtDate, fno->fdate);
3890 
+				dj.fs->wflag = 1;
3891 
+				res = sync_fs(dj.fs);
3892 
+			}
3893 
+		}
3894 
+	}
3895 
+
3896 
+	LEAVE_FF(dj.fs, res);
3897 
+}
3898 
+
3899 
+#endif /* !_FS_READONLY */
3900 
+#endif /* _FS_MINIMIZE == 0 */
3901 
+#endif /* _FS_MINIMIZE <= 1 */
3902 
+#endif /* _FS_MINIMIZE <= 2 */
3903 
+
3904 
+
3905 
+
3906 
+
3907 
+#if _USE_LABEL
3908 
+/*-----------------------------------------------------------------------*/
3909 
+/* Get volume label                                                      */
3910 
+/*-----------------------------------------------------------------------*/
3911 
+
3912 
+FRESULT f_getlabel (
3913 
+	const TCHAR* path,	/* Path name of the logical drive number */
3914 
+	TCHAR* label,		/* Pointer to a buffer to return the volume label */
3915 
+	DWORD* vsn			/* Pointer to a variable to return the volume serial number */
3916 
+)
3917 
+{
3918 
+	FRESULT res;
3919 
+	DIR dj;
3920 
+	UINT i, j;
3921 
+#if _USE_LFN && _LFN_UNICODE
3922 
+	WCHAR w;
3923 
+#endif
3924 
+
3925 
+
3926 
+	/* Get logical drive number */
3927 
+	res = find_volume(&dj.fs, &path, 0);
3928 
+
3929 
+	/* Get volume label */
3930 
+	if (res == FR_OK && label) {
3931 
+		dj.sclust = 0;					/* Open root directory */
3932 
+		res = dir_sdi(&dj, 0);
3933 
+		if (res == FR_OK) {
3934 
+			res = dir_read(&dj, 1);		/* Get an entry with AM_VOL */
3935 
+			if (res == FR_OK) {			/* A volume label is exist */
3936 
+#if _USE_LFN && _LFN_UNICODE
3937 
+				i = j = 0;
3938 
+				do {
3939 
+					w = (i < 11) ? dj.dir[i++] : ' ';
3940 
+					if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))
3941 
+						w = w << 8 | dj.dir[i++];
3942 
+					label[j++] = ff_convert(w, 1);	/* OEM -> Unicode */
3943 
+				} while (j < 11);
3944 
+#else
3945 
+				mem_cpy(label, dj.dir, 11);
3946 
+#endif
3947 
+				j = 11;
3948 
+				do {
3949 
+					label[j] = 0;
3950 
+					if (!j) break;
3951 
+				} while (label[--j] == ' ');
3952 
+			}
3953 
+			if (res == FR_NO_FILE) {	/* No label, return nul string */
3954 
+				label[0] = 0;
3955 
+				res = FR_OK;
3956 
+			}
3957 
+		}
3958 
+	}
3959 
+
3960 
+	/* Get volume serial number */
3961 
+	if (res == FR_OK && vsn) {
3962 
+		res = move_window(dj.fs, dj.fs->volbase);
3963 
+		if (res == FR_OK) {
3964 
+			i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;
3965 
+			*vsn = LD_DWORD(&dj.fs->win.d8[i]);
3966 
+		}
3967 
+	}
3968 
+
3969 
+	LEAVE_FF(dj.fs, res);
3970 
+}
3971 
+
3972 
+
3973 
+
3974 
+#if !_FS_READONLY
3975 
+/*-----------------------------------------------------------------------*/
3976 
+/* Set volume label                                                      */
3977 
+/*-----------------------------------------------------------------------*/
3978 
+
3979 
+FRESULT f_setlabel (
3980 
+	const TCHAR* label	/* Pointer to the volume label to set */
3981 
+)
3982 
+{
3983 
+	FRESULT res;
3984 
+	DIR dj;
3985 
+	BYTE vn[11];
3986 
+	UINT i, j, sl;
3987 
+	WCHAR w;
3988 
+	DWORD tm;
3989 
+
3990 
+
3991 
+	/* Get logical drive number */
3992 
+	res = find_volume(&dj.fs, &label, 1);
3993 
+	if (res) LEAVE_FF(dj.fs, res);
3994 
+
3995 
+	/* Create a volume label in directory form */
3996 
+	vn[0] = 0;
3997 
+	for (sl = 0; label[sl]; sl++) ;				/* Get name length */
3998 
+	for ( ; sl && label[sl - 1] == ' '; sl--) ;	/* Remove trailing spaces */
3999 
+	if (sl) {	/* Create volume label in directory form */
4000 
+		i = j = 0;
4001 
+		do {
4002 
+#if _USE_LFN && _LFN_UNICODE
4003 
+			w = ff_convert(ff_wtoupper(label[i++]), 0);
4004 
+#else
4005 
+			w = (BYTE)label[i++];
4006 
+			if (IsDBCS1(w))
4007 
+				w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
4008 
+#if _USE_LFN
4009 
+			w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
4010 
+#else
4011 
+			if (IsLower(w)) w -= 0x20;			/* To upper ASCII characters */
4012 
+#ifdef _EXCVT
4013 
+			if (w >= 0x80) w = ExCvt[w - 0x80];	/* To upper extended characters (SBCS cfg) */
4014 
+#else
4015 
+			if (!_DF1S && w >= 0x80) w = 0;		/* Reject extended characters (ASCII cfg) */
4016 
+#endif
4017 
+#endif
4018 
+#endif
4019 
+			if (!w || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */
4020 
+				LEAVE_FF(dj.fs, FR_INVALID_NAME);
4021 
+			if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);
4022 
+			vn[j++] = (BYTE)w;
4023 
+		} while (i < sl);
4024 
+		while (j < 11) vn[j++] = ' ';	/* Fill remaining name field */
4025 
+		if (vn[0] == DDEM) LEAVE_FF(dj.fs, FR_INVALID_NAME);	/* Reject illegal name (heading DDEM) */
4026 
+	}
4027 
+
4028 
+	/* Set volume label */
4029 
+	dj.sclust = 0;					/* Open root directory */
4030 
+	res = dir_sdi(&dj, 0);
4031 
+	if (res == FR_OK) {
4032 
+		res = dir_read(&dj, 1);		/* Get an entry with AM_VOL */
4033 
+		if (res == FR_OK) {			/* A volume label is found */
4034 
+			if (vn[0]) {
4035 
+				mem_cpy(dj.dir, vn, 11);	/* Change the volume label name */
4036 
+				tm = GET_FATTIME();
4037 
+				ST_DWORD(dj.dir + DIR_WrtTime, tm);
4038 
+			} else {
4039 
+				dj.dir[0] = DDEM;			/* Remove the volume label */
4040 
+			}
4041 
+			dj.fs->wflag = 1;
4042 
+			res = sync_fs(dj.fs);
4043 
+		} else {					/* No volume label is found or error */
4044 
+			if (res == FR_NO_FILE) {
4045 
+				res = FR_OK;
4046 
+				if (vn[0]) {				/* Create volume label as new */
4047 
+					res = dir_alloc(&dj, 1);	/* Allocate an entry for volume label */
4048 
+					if (res == FR_OK) {
4049 
+						mem_set(dj.dir, 0, SZ_DIRE);	/* Set volume label */
4050 
+						mem_cpy(dj.dir, vn, 11);
4051 
+						dj.dir[DIR_Attr] = AM_VOL;
4052 
+						tm = GET_FATTIME();
4053 
+						ST_DWORD(dj.dir + DIR_WrtTime, tm);
4054 
+						dj.fs->wflag = 1;
4055 
+						res = sync_fs(dj.fs);
4056 
+					}
4057 
+				}
4058 
+			}
4059 
+		}
4060 
+	}
4061 
+
4062 
+	LEAVE_FF(dj.fs, res);
4063 
+}
4064 
+
4065 
+#endif /* !_FS_READONLY */
4066 
+#endif /* _USE_LABEL */
4067 
+
4068 
+
4069 
+
4070 
+/*-----------------------------------------------------------------------*/
4071 
+/* Forward data to the stream directly (available on only tiny cfg)      */
4072 
+/*-----------------------------------------------------------------------*/
4073 
+#if _USE_FORWARD && _FS_TINY
4074 
+
4075 
+FRESULT f_forward (
4076 
+	FIL* fp, 						/* Pointer to the file object */
4077 
+	UINT (*func)(const BYTE*,UINT),	/* Pointer to the streaming function */
4078 
+	UINT btf,						/* Number of bytes to forward */
4079 
+	UINT* bf						/* Pointer to number of bytes forwarded */
4080 
+)
4081 
+{
4082 
+	FRESULT res;
4083 
+	DWORD remain, clst, sect;
4084 
+	UINT rcnt;
4085 
+	BYTE csect;
4086 
+
4087 
+
4088 
+	*bf = 0;	/* Clear transfer byte counter */
4089 
+
4090 
+	res = validate(fp);								/* Check validity of the object */
4091 
+	if (res != FR_OK) LEAVE_FF(fp->fs, res);
4092 
+	if (fp->err)									/* Check error */
4093 
+		LEAVE_FF(fp->fs, (FRESULT)fp->err);
4094 
+	if (!(fp->flag & FA_READ))						/* Check access mode */
4095 
+		LEAVE_FF(fp->fs, FR_DENIED);
4096 
+
4097 
+	remain = fp->fsize - fp->fptr;
4098 
+	if (btf > remain) btf = (UINT)remain;			/* Truncate btf by remaining bytes */
4099 
+
4100 
+	for ( ;  btf && (*func)(0, 0);					/* Repeat until all data transferred or stream becomes busy */
4101 
+		fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
4102 
+		csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */
4103 
+		if ((fp->fptr % SS(fp->fs)) == 0) {			/* On the sector boundary? */
4104 
+			if (!csect) {							/* On the cluster boundary? */
4105 
+				clst = (fp->fptr == 0) ?			/* On the top of the file? */
4106 
+					fp->sclust : get_fat(fp->fs, fp->clust);
4107 
+				if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
4108 
+				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
4109 
+				fp->clust = clst;					/* Update current cluster */
4110 
+			}
4111 
+		}
4112 
+		sect = clust2sect(fp->fs, fp->clust);		/* Get current data sector */
4113 
+		if (!sect) ABORT(fp->fs, FR_INT_ERR);
4114 
+		sect += csect;
4115 
+		if (move_window(fp->fs, sect) != FR_OK)		/* Move sector window */
4116 
+			ABORT(fp->fs, FR_DISK_ERR);
4117 
+		fp->dsect = sect;
4118 
+		rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs));	/* Forward data from sector window */
4119 
+		if (rcnt > btf) rcnt = btf;
4120 
+		rcnt = (*func)(&fp->fs->win.d8[(WORD)fp->fptr % SS(fp->fs)], rcnt);
4121 
+		if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
4122 
+	}
4123 
+
4124 
+	LEAVE_FF(fp->fs, FR_OK);
4125 
+}
4126 
+#endif /* _USE_FORWARD */
4127 
+
4128 
+
4129 
+
4130 
+#if _USE_MKFS && !_FS_READONLY
4131 
+/*-----------------------------------------------------------------------*/
4132 
+/* Create file system on the logical drive                               */
4133 
+/*-----------------------------------------------------------------------*/
4134 
+#define N_ROOTDIR	512		/* Number of root directory entries for FAT12/16 */
4135 
+#define N_FATS		1		/* Number of FATs (1 or 2) */
4136 
+
4137 
+
4138 
+FRESULT f_mkfs (
4139 
+	const TCHAR* path,	/* Logical drive number */
4140 
+	BYTE sfd,			/* Partitioning rule 0:FDISK, 1:SFD */
4141 
+	UINT au				/* Size of allocation unit in unit of byte or sector */
4142 
+)
4143 
+{
4144 
+	static const WORD vst[] = { 1024,   512,  256,  128,   64,    32,   16,    8,    4,    2,   0};
4145 
+	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
4146 
+	int vol;
4147 
+	BYTE fmt, md, sys, *tbl, pdrv, part;
4148 
+	DWORD n_clst, vs, n, wsect;
4149 
+	UINT i;
4150 
+	DWORD b_vol, b_fat, b_dir, b_data;	/* LBA */
4151 
+	DWORD n_vol, n_rsv, n_fat, n_dir;	/* Size */
4152 
+	FATFS *fs;
4153 
+	DSTATUS stat;
4154 
+#if _USE_TRIM
4155 
+	DWORD eb[2];
4156 
+#endif
4157 
+
4158 
+
4159 
+	/* Check mounted drive and clear work area */
4160 
+	if (sfd > 1) return FR_INVALID_PARAMETER;
4161 
+	vol = get_ldnumber(&path);
4162 
+	if (vol < 0) return FR_INVALID_DRIVE;
4163 
+	fs = FatFs[vol];
4164 
+	if (!fs) return FR_NOT_ENABLED;
4165 
+	fs->fs_type = 0;
4166 
+	pdrv = LD2PD(vol);	/* Physical drive */
4167 
+	part = LD2PT(vol);	/* Partition (0:auto detect, 1-4:get from partition table)*/
4168 
+
4169 
+	/* Get disk statics */
4170 
+	stat = disk_initialize(pdrv);
4171 
+	if (stat & STA_NOINIT) return FR_NOT_READY;
4172 
+	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
4173 
+#if _MAX_SS != _MIN_SS		/* Get disk sector size */
4174 
+	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS || SS(fs) < _MIN_SS)
4175 
+		return FR_DISK_ERR;
4176 
+#endif
4177 
+	if (_MULTI_PARTITION && part) {
4178 
+		/* Get partition information from partition table in the MBR */
4179 
+		if (disk_read(pdrv, fs->win.d8, 0, 1) != RES_OK) return FR_DISK_ERR;
4180 
+		if (LD_WORD(fs->win.d8 + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
4181 
+		tbl = &fs->win.d8[MBR_Table + (part - 1) * SZ_PTE];
4182 
+		if (!tbl[4]) return FR_MKFS_ABORTED;	/* No partition? */
4183 
+		b_vol = LD_DWORD(tbl + 8);	/* Volume start sector */
4184 
+		n_vol = LD_DWORD(tbl + 12);	/* Volume size */
4185 
+	} else {
4186 
+		/* Create a partition in this function */
4187 
+		if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
4188 
+			return FR_DISK_ERR;
4189 
+		b_vol = (sfd) ? 0 : 63;		/* Volume start sector */
4190 
+		n_vol -= b_vol;				/* Volume size */
4191 
+	}
4192 
+
4193 
+	if (au & (au - 1)) au = 0;
4194 
+	if (!au) {						/* AU auto selection */
4195 
+		vs = n_vol / (2000 / (SS(fs) / 512));
4196 
+		for (i = 0; vs < vst[i]; i++) ;
4197 
+		au = cst[i];
4198 
+	}
4199 
+	if (au >= _MIN_SS) au /= SS(fs);	/* Number of sectors per cluster */
4200 
+	if (!au) au = 1;
4201 
+	if (au > 128) au = 128;
4202 
+
4203 
+	/* Pre-compute number of clusters and FAT sub-type */
4204 
+	n_clst = n_vol / au;
4205 
+	fmt = FS_FAT12;
4206 
+	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
4207 
+	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
4208 
+
4209 
+	/* Determine offset and size of FAT structure */
4210 
+	if (fmt == FS_FAT32) {
4211 
+		n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
4212 
+		n_rsv = 32;
4213 
+		n_dir = 0;
4214 
+	} else {
4215 
+		n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
4216 
+		n_fat = (n_fat + SS(fs) - 1) / SS(fs);
4217 
+		n_rsv = 1;
4218 
+		n_dir = (DWORD)N_ROOTDIR * SZ_DIRE / SS(fs);
4219 
+	}
4220 
+	b_fat = b_vol + n_rsv;				/* FAT area start sector */
4221 
+	b_dir = b_fat + n_fat * N_FATS;		/* Directory area start sector */
4222 
+	b_data = b_dir + n_dir;				/* Data area start sector */
4223 
+	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED;	/* Too small volume */
4224 
+
4225 
+	/* Align data start sector to erase block boundary (for flash memory media) */
4226 
+	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
4227 
+	n = (b_data + n - 1) & ~(n - 1);	/* Next nearest erase block from current data start */
4228 
+	n = (n - b_data) / N_FATS;
4229 
+	if (fmt == FS_FAT32) {		/* FAT32: Move FAT offset */
4230 
+		n_rsv += n;
4231 
+		b_fat += n;
4232 
+	} else {					/* FAT12/16: Expand FAT size */
4233 
+		n_fat += n;
4234 
+	}
4235 
+
4236 
+	/* Determine number of clusters and final check of validity of the FAT sub-type */
4237 
+	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
4238 
+	if (   (fmt == FS_FAT16 && n_clst < MIN_FAT16)
4239 
+		|| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
4240 
+		return FR_MKFS_ABORTED;
4241 
+
4242 
+	/* Determine system ID in the partition table */
4243 
+	if (fmt == FS_FAT32) {
4244 
+		sys = 0x0C;		/* FAT32X */
4245 
+	} else {
4246 
+		if (fmt == FS_FAT12 && n_vol < 0x10000) {
4247 
+			sys = 0x01;	/* FAT12(<65536) */
4248 
+		} else {
4249 
+			sys = (n_vol < 0x10000) ? 0x04 : 0x06;	/* FAT16(<65536) : FAT12/16(>=65536) */
4250 
+		}
4251 
+	}
4252 
+
4253 
+	if (_MULTI_PARTITION && part) {
4254 
+		/* Update system ID in the partition table */
4255 
+		tbl = &fs->win.d8[MBR_Table + (part - 1) * SZ_PTE];
4256 
+		tbl[4] = sys;
4257 
+		if (disk_write(pdrv, fs->win.d8, 0, 1) != RES_OK)	/* Write it to teh MBR */
4258 
+			return FR_DISK_ERR;
4259 
+		md = 0xF8;
4260 
+	} else {
4261 
+		if (sfd) {	/* No partition table (SFD) */
4262 
+			md = 0xF0;
4263 
+		} else {	/* Create partition table (FDISK) */
4264 
+			mem_set(fs->win.d8, 0, SS(fs));
4265 
+			tbl = fs->win.d8 + MBR_Table;	/* Create partition table for single partition in the drive */
4266 
+			tbl[1] = 1;						/* Partition start head */
4267 
+			tbl[2] = 1;						/* Partition start sector */
4268 
+			tbl[3] = 0;						/* Partition start cylinder */
4269 
+			tbl[4] = sys;					/* System type */
4270 
+			tbl[5] = 254;					/* Partition end head */
4271 
+			n = (b_vol + n_vol) / 63 / 255;
4272 
+			tbl[6] = (BYTE)(n >> 2 | 63);	/* Partition end sector */
4273 
+			tbl[7] = (BYTE)n;				/* End cylinder */
4274 
+			ST_DWORD(tbl + 8, 63);			/* Partition start in LBA */
4275 
+			ST_DWORD(tbl + 12, n_vol);		/* Partition size in LBA */
4276 
+			ST_WORD(fs->win.d8 + BS_55AA, 0xAA55);	/* MBR signature */
4277 
+			if (disk_write(pdrv, fs->win.d8, 0, 1) != RES_OK)	/* Write it to the MBR */
4278 
+				return FR_DISK_ERR;
4279 
+			md = 0xF8;
4280 
+		}
4281 
+	}
4282 
+
4283 
+	/* Create BPB in the VBR */
4284 
+	tbl = fs->win.d8;							/* Clear sector */
4285 
+	mem_set(tbl, 0, SS(fs));
4286 
+	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
4287 
+	i = SS(fs);								/* Sector size */
4288 
+	ST_WORD(tbl + BPB_BytsPerSec, i);
4289 
+	tbl[BPB_SecPerClus] = (BYTE)au;			/* Sectors per cluster */
4290 
+	ST_WORD(tbl + BPB_RsvdSecCnt, n_rsv);	/* Reserved sectors */
4291 
+	tbl[BPB_NumFATs] = N_FATS;				/* Number of FATs */
4292 
+	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR;	/* Number of root directory entries */
4293 
+	ST_WORD(tbl + BPB_RootEntCnt, i);
4294 
+	if (n_vol < 0x10000) {					/* Number of total sectors */
4295 
+		ST_WORD(tbl + BPB_TotSec16, n_vol);
4296 
+	} else {
4297 
+		ST_DWORD(tbl + BPB_TotSec32, n_vol);
4298 
+	}
4299 
+	tbl[BPB_Media] = md;					/* Media descriptor */
4300 
+	ST_WORD(tbl + BPB_SecPerTrk, 63);		/* Number of sectors per track */
4301 
+	ST_WORD(tbl + BPB_NumHeads, 255);		/* Number of heads */
4302 
+	ST_DWORD(tbl + BPB_HiddSec, b_vol);		/* Hidden sectors */
4303 
+	n = GET_FATTIME();						/* Use current time as VSN */
4304 
+	if (fmt == FS_FAT32) {
4305 
+		ST_DWORD(tbl + BS_VolID32, n);		/* VSN */
4306 
+		ST_DWORD(tbl + BPB_FATSz32, n_fat);	/* Number of sectors per FAT */
4307 
+		ST_DWORD(tbl + BPB_RootClus, 2);	/* Root directory start cluster (2) */
4308 
+		ST_WORD(tbl + BPB_FSInfo, 1);		/* FSINFO record offset (VBR + 1) */
4309 
+		ST_WORD(tbl + BPB_BkBootSec, 6);	/* Backup boot record offset (VBR + 6) */
4310 
+		tbl[BS_DrvNum32] = 0x80;			/* Drive number */
4311 
+		tbl[BS_BootSig32] = 0x29;			/* Extended boot signature */
4312 
+		mem_cpy(tbl + BS_VolLab32, "NO NAME    " "FAT32   ", 19);	/* Volume label, FAT signature */
4313 
+	} else {
4314 
+		ST_DWORD(tbl + BS_VolID, n);		/* VSN */
4315 
+		ST_WORD(tbl + BPB_FATSz16, n_fat);	/* Number of sectors per FAT */
4316 
+		tbl[BS_DrvNum] = 0x80;				/* Drive number */
4317 
+		tbl[BS_BootSig] = 0x29;				/* Extended boot signature */
4318 
+		mem_cpy(tbl + BS_VolLab, "NO NAME    " "FAT     ", 19);	/* Volume label, FAT signature */
4319 
+	}
4320 
+	ST_WORD(tbl + BS_55AA, 0xAA55);			/* Signature (Offset is fixed here regardless of sector size) */
4321 
+	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK)	/* Write it to the VBR sector */
4322 
+		return FR_DISK_ERR;
4323 
+	if (fmt == FS_FAT32)					/* Write backup VBR if needed (VBR + 6) */
4324 
+		disk_write(pdrv, tbl, b_vol + 6, 1);
4325 
+
4326 
+	/* Initialize FAT area */
4327 
+	wsect = b_fat;
4328 
+	for (i = 0; i < N_FATS; i++) {		/* Initialize each FAT copy */
4329 
+		mem_set(tbl, 0, SS(fs));			/* 1st sector of the FAT  */
4330 
+		n = md;								/* Media descriptor byte */
4331 
+		if (fmt != FS_FAT32) {
4332 
+			n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
4333 
+			ST_DWORD(tbl + 0, n);			/* Reserve cluster #0-1 (FAT12/16) */
4334 
+		} else {
4335 
+			n |= 0xFFFFFF00;
4336 
+			ST_DWORD(tbl + 0, n);			/* Reserve cluster #0-1 (FAT32) */
4337 
+			ST_DWORD(tbl + 4, 0xFFFFFFFF);
4338 
+			ST_DWORD(tbl + 8, 0x0FFFFFFF);	/* Reserve cluster #2 for root directory */
4339 
+		}
4340 
+		if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
4341 
+			return FR_DISK_ERR;
4342 
+		mem_set(tbl, 0, SS(fs));			/* Fill following FAT entries with zero */
4343 
+		for (n = 1; n < n_fat; n++) {		/* This loop may take a time on FAT32 volume due to many single sector writes */
4344 
+			if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
4345 
+				return FR_DISK_ERR;
4346 
+		}
4347 
+	}
4348 
+
4349 
+	/* Initialize root directory */
4350 
+	i = (fmt == FS_FAT32) ? au : (UINT)n_dir;
4351 
+	do {
4352 
+		if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
4353 
+			return FR_DISK_ERR;
4354 
+	} while (--i);
4355 
+
4356 
+#if _USE_TRIM	/* Erase data area if needed */
4357 
+	{
4358 
+		eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
4359 
+		disk_ioctl(pdrv, CTRL_TRIM, eb);
4360 
+	}
4361 
+#endif
4362 
+
4363 
+	/* Create FSINFO if needed */
4364 
+	if (fmt == FS_FAT32) {
4365 
+		ST_DWORD(tbl + FSI_LeadSig, 0x41615252);
4366 
+		ST_DWORD(tbl + FSI_StrucSig, 0x61417272);
4367 
+		ST_DWORD(tbl + FSI_Free_Count, n_clst - 1);	/* Number of free clusters */
4368 
+		ST_DWORD(tbl + FSI_Nxt_Free, 2);			/* Last allocated cluster# */
4369 
+		ST_WORD(tbl + BS_55AA, 0xAA55);
4370 
+		disk_write(pdrv, tbl, b_vol + 1, 1);	/* Write original (VBR + 1) */
4371 
+		disk_write(pdrv, tbl, b_vol + 7, 1);	/* Write backup (VBR + 7) */
4372 
+	}
4373 
+
4374 
+	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
4375 
+}
4376 
+
4377 
+
4378 
+
4379 
+#if _MULTI_PARTITION
4380 
+/*-----------------------------------------------------------------------*/
4381 
+/* Create partition table on the physical drive                          */
4382 
+/*-----------------------------------------------------------------------*/
4383 
+
4384 
+FRESULT f_fdisk (
4385 
+	BYTE pdrv,			/* Physical drive number */
4386 
+	const DWORD szt[],	/* Pointer to the size table for each partitions */
4387 
+	void* work			/* Pointer to the working buffer */
4388 
+)
4389 
+{
4390 
+	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
4391 
+	BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
4392 
+	DSTATUS stat;
4393 
+	DWORD sz_disk, sz_part, s_part;
4394 
+
4395 
+
4396 
+	stat = disk_initialize(pdrv);
4397 
+	if (stat & STA_NOINIT) return FR_NOT_READY;
4398 
+	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
4399 
+	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
4400 
+
4401 
+	/* Determine CHS in the table regardless of the drive geometry */
4402 
+	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
4403 
+	if (n == 256) n--;
4404 
+	e_hd = n - 1;
4405 
+	sz_cyl = 63 * n;
4406 
+	tot_cyl = sz_disk / sz_cyl;
4407 
+
4408 
+	/* Create partition table */
4409 
+	mem_set(buf, 0, _MAX_SS);
4410 
+	p = buf + MBR_Table; b_cyl = 0;
4411 
+	for (i = 0; i < 4; i++, p += SZ_PTE) {
4412 
+		p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
4413 
+		if (!p_cyl) continue;
4414 
+		s_part = (DWORD)sz_cyl * b_cyl;
4415 
+		sz_part = (DWORD)sz_cyl * p_cyl;
4416 
+		if (i == 0) {	/* Exclude first track of cylinder 0 */
4417 
+			s_hd = 1;
4418 
+			s_part += 63; sz_part -= 63;
4419 
+		} else {
4420 
+			s_hd = 0;
4421 
+		}
4422 
+		e_cyl = b_cyl + p_cyl - 1;
4423 
+		if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
4424 
+
4425 
+		/* Set partition table */
4426 
+		p[1] = s_hd;						/* Start head */
4427 
+		p[2] = (BYTE)((b_cyl >> 2) + 1);	/* Start sector */
4428 
+		p[3] = (BYTE)b_cyl;					/* Start cylinder */
4429 
+		p[4] = 0x06;						/* System type (temporary setting) */
4430 
+		p[5] = e_hd;						/* End head */
4431 
+		p[6] = (BYTE)((e_cyl >> 2) + 63);	/* End sector */
4432 
+		p[7] = (BYTE)e_cyl;					/* End cylinder */
4433 
+		ST_DWORD(p + 8, s_part);			/* Start sector in LBA */
4434 
+		ST_DWORD(p + 12, sz_part);			/* Partition size */
4435 
+
4436 
+		/* Next partition */
4437 
+		b_cyl += p_cyl;
4438 
+	}
4439 
+	ST_WORD(p, 0xAA55);
4440 
+
4441 
+	/* Write it to the MBR */
4442 
+	return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
4443 
+}
4444 
+
4445 
+
4446 
+#endif /* _MULTI_PARTITION */
4447 
+#endif /* _USE_MKFS && !_FS_READONLY */
4448 
+
4449 
+
4450 
+
4451 
+
4452 
+#if _USE_STRFUNC
4453 
+/*-----------------------------------------------------------------------*/
4454 
+/* Get a string from the file                                            */
4455 
+/*-----------------------------------------------------------------------*/
4456 
+
4457 
+TCHAR* f_gets (
4458 
+	TCHAR* buff,	/* Pointer to the string buffer to read */
4459 
+	int len,		/* Size of string buffer (characters) */
4460 
+	FIL* fp			/* Pointer to the file object */
4461 
+)
4462 
+{
4463 
+	int n = 0;
4464 
+	TCHAR c, *p = buff;
4465 
+	BYTE s[2];
4466 
+	UINT rc;
4467 
+
4468 
+
4469 
+	while (n < len - 1) {	/* Read characters until buffer gets filled */
4470 
+#if _USE_LFN && _LFN_UNICODE
4471 
+#if _STRF_ENCODE == 3		/* Read a character in UTF-8 */
4472 
+		f_read(fp, s, 1, &rc);
4473 
+		if (rc != 1) break;
4474 
+		c = s[0];
4475 
+		if (c >= 0x80) {
4476 
+			if (c < 0xC0) continue;	/* Skip stray trailer */
4477 
+			if (c < 0xE0) {			/* Two-byte sequence */
4478 
+				f_read(fp, s, 1, &rc);
4479 
+				if (rc != 1) break;
4480 
+				c = (c & 0x1F) << 6 | (s[0] & 0x3F);
4481 
+				if (c < 0x80) c = '?';
4482 
+			} else {
4483 
+				if (c < 0xF0) {		/* Three-byte sequence */
4484 
+					f_read(fp, s, 2, &rc);
4485 
+					if (rc != 2) break;
4486 
+					c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);
4487 
+					if (c < 0x800) c = '?';
4488 
+				} else {			/* Reject four-byte sequence */
4489 
+					c = '?';
4490 
+				}
4491 
+			}
4492 
+		}
4493 
+#elif _STRF_ENCODE == 2		/* Read a character in UTF-16BE */
4494 
+		f_read(fp, s, 2, &rc);
4495 
+		if (rc != 2) break;
4496 
+		c = s[1] + (s[0] << 8);
4497 
+#elif _STRF_ENCODE == 1		/* Read a character in UTF-16LE */
4498 
+		f_read(fp, s, 2, &rc);
4499 
+		if (rc != 2) break;
4500 
+		c = s[0] + (s[1] << 8);
4501 
+#else						/* Read a character in ANSI/OEM */
4502 
+		f_read(fp, s, 1, &rc);
4503 
+		if (rc != 1) break;
4504 
+		c = s[0];
4505 
+		if (IsDBCS1(c)) {
4506 
+			f_read(fp, s, 1, &rc);
4507 
+			if (rc != 1) break;
4508 
+			c = (c << 8) + s[0];
4509 
+		}
4510 
+		c = ff_convert(c, 1);	/* OEM -> Unicode */
4511 
+		if (!c) c = '?';
4512 
+#endif
4513 
+#else						/* Read a character without conversion */
4514 
+		f_read(fp, s, 1, &rc);
4515 
+		if (rc != 1) break;
4516 
+		c = s[0];
4517 
+#endif
4518 
+		if (_USE_STRFUNC == 2 && c == '\r') continue;	/* Strip '\r' */
4519 
+		*p++ = c;
4520 
+		n++;
4521 
+		if (c == '\n') break;		/* Break on EOL */
4522 
+	}
4523 
+	*p = 0;
4524 
+	return n ? buff : 0;			/* When no data read (eof or error), return with error. */
4525 
+}
4526 
+
4527 
+
4528 
+
4529 
+
4530 
+#if !_FS_READONLY
4531 
+#include <stdarg.h>
4532 
+/*-----------------------------------------------------------------------*/
4533 
+/* Put a character to the file                                           */
4534 
+/*-----------------------------------------------------------------------*/
4535 
+
4536 
+typedef struct {
4537 
+	FIL* fp;
4538 
+	int idx, nchr;
4539 
+	BYTE buf[64];
4540 
+} putbuff;
4541 
+
4542 
+
4543 
+static
4544 
+void putc_bfd (
4545 
+	putbuff* pb,
4546 
+	TCHAR c
4547 
+)
4548 
+{
4549 
+	UINT bw;
4550 
+	int i;
4551 
+
4552 
+
4553 
+	if (_USE_STRFUNC == 2 && c == '\n')	 /* LF -> CRLF conversion */
4554 
+		putc_bfd(pb, '\r');
4555 
+
4556 
+	i = pb->idx;	/* Buffer write index (-1:error) */
4557 
+	if (i < 0) return;
4558 
+
4559 
+#if _USE_LFN && _LFN_UNICODE
4560 
+#if _STRF_ENCODE == 3			/* Write a character in UTF-8 */
4561 
+	if (c < 0x80) {				/* 7-bit */
4562 
+		pb->buf[i++] = (BYTE)c;
4563 
+	} else {
4564 
+		if (c < 0x800) {		/* 11-bit */
4565 
+			pb->buf[i++] = (BYTE)(0xC0 | c >> 6);
4566 
+		} else {				/* 16-bit */
4567 
+			pb->buf[i++] = (BYTE)(0xE0 | c >> 12);
4568 
+			pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));
4569 
+		}
4570 
+		pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));
4571 
+	}
4572 
+#elif _STRF_ENCODE == 2			/* Write a character in UTF-16BE */
4573 
+	pb->buf[i++] = (BYTE)(c >> 8);
4574 
+	pb->buf[i++] = (BYTE)c;
4575 
+#elif _STRF_ENCODE == 1			/* Write a character in UTF-16LE */
4576 
+	pb->buf[i++] = (BYTE)c;
4577 
+	pb->buf[i++] = (BYTE)(c >> 8);
4578 
+#else							/* Write a character in ANSI/OEM */
4579 
+	c = ff_convert(c, 0);	/* Unicode -> OEM */
4580 
+	if (!c) c = '?';
4581 
+	if (c >= 0x100)
4582 
+		pb->buf[i++] = (BYTE)(c >> 8);
4583 
+	pb->buf[i++] = (BYTE)c;
4584 
+#endif
4585 
+#else							/* Write a character without conversion */
4586 
+	pb->buf[i++] = (BYTE)c;
4587 
+#endif
4588 
+
4589 
+	if (i >= (int)(sizeof pb->buf) - 3) {	/* Write buffered characters to the file */
4590 
+		f_write(pb->fp, pb->buf, (UINT)i, &bw);
4591 
+		i = (bw == (UINT)i) ? 0 : -1;
4592 
+	}
4593 
+	pb->idx = i;
4594 
+	pb->nchr++;
4595 
+}
4596 
+
4597 
+
4598 
+
4599 
+int f_putc (
4600 
+	TCHAR c,	/* A character to be output */
4601 
+	FIL* fp		/* Pointer to the file object */
4602 
+)
4603 
+{
4604 
+	putbuff pb;
4605 
+	UINT nw;
4606 
+
4607 
+
4608 
+	pb.fp = fp;			/* Initialize output buffer */
4609 
+	pb.nchr = pb.idx = 0;
4610 
+
4611 
+	putc_bfd(&pb, c);	/* Put a character */
4612 
+
4613 
+	if (   pb.idx >= 0	/* Flush buffered characters to the file */
4614 
+		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
4615 
+		&& (UINT)pb.idx == nw) return pb.nchr;
4616 
+	return EOF;
4617 
+}
4618 
+
4619 
+
4620 
+
4621 
+
4622 
+/*-----------------------------------------------------------------------*/
4623 
+/* Put a string to the file                                              */
4624 
+/*-----------------------------------------------------------------------*/
4625 
+
4626 
+int f_puts (
4627 
+	const TCHAR* str,	/* Pointer to the string to be output */
4628 
+	FIL* fp				/* Pointer to the file object */
4629 
+)
4630 
+{
4631 
+	putbuff pb;
4632 
+	UINT nw;
4633 
+
4634 
+
4635 
+	pb.fp = fp;				/* Initialize output buffer */
4636 
+	pb.nchr = pb.idx = 0;
4637 
+
4638 
+	while (*str)			/* Put the string */
4639 
+		putc_bfd(&pb, *str++);
4640 
+
4641 
+	if (   pb.idx >= 0		/* Flush buffered characters to the file */
4642 
+		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
4643 
+		&& (UINT)pb.idx == nw) return pb.nchr;
4644 
+	return EOF;
4645 
+}
4646 
+
4647 
+
4648 
+
4649 
+
4650 
+/*-----------------------------------------------------------------------*/
4651 
+/* Put a formatted string to the file                                    */
4652 
+/*-----------------------------------------------------------------------*/
4653 
+
4654 
+int f_printf (
4655 
+	FIL* fp,			/* Pointer to the file object */
4656 
+	const TCHAR* fmt,	/* Pointer to the format string */
4657 
+	...					/* Optional arguments... */
4658 
+)
4659 
+{
4660 
+	va_list arp;
4661 
+	BYTE f, r;
4662 
+	UINT nw, i, j, w;
4663 
+	DWORD v;
4664 
+	TCHAR c, d, s[16], *p;
4665 
+	putbuff pb;
4666 
+
4667 
+
4668 
+	pb.fp = fp;				/* Initialize output buffer */
4669 
+	pb.nchr = pb.idx = 0;
4670 
+
4671 
+	va_start(arp, fmt);
4672 
+
4673 
+	for (;;) {
4674 
+		c = *fmt++;
4675 
+		if (c == 0) break;			/* End of string */
4676 
+		if (c != '%') {				/* Non escape character */
4677 
+			putc_bfd(&pb, c);
4678 
+			continue;
4679 
+		}
4680 
+		w = f = 0;
4681 
+		c = *fmt++;
4682 
+		if (c == '0') {				/* Flag: '0' padding */
4683 
+			f = 1; c = *fmt++;
4684 
+		} else {
4685 
+			if (c == '-') {			/* Flag: left justified */
4686 
+				f = 2; c = *fmt++;
4687 
+			}
4688 
+		}
4689 
+		while (IsDigit(c)) {		/* Precision */
4690 
+			w = w * 10 + c - '0';
4691 
+			c = *fmt++;
4692 
+		}
4693 
+		if (c == 'l' || c == 'L') {	/* Prefix: Size is long int */
4694 
+			f |= 4; c = *fmt++;
4695 
+		}
4696 
+		if (!c) break;
4697 
+		d = c;
4698 
+		if (IsLower(d)) d -= 0x20;
4699 
+		switch (d) {				/* Type is... */
4700 
+		case 'S' :					/* String */
4701 
+			p = va_arg(arp, TCHAR*);
4702 
+			for (j = 0; p[j]; j++) ;
4703 
+			if (!(f & 2)) {
4704 
+				while (j++ < w) putc_bfd(&pb, ' ');
4705 
+			}
4706 
+			while (*p) putc_bfd(&pb, *p++);
4707 
+			while (j++ < w) putc_bfd(&pb, ' ');
4708 
+			continue;
4709 
+		case 'C' :					/* Character */
4710 
+			putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
4711 
+		case 'B' :					/* Binary */
4712 
+			r = 2; break;
4713 
+		case 'O' :					/* Octal */
4714 
+			r = 8; break;
4715 
+		case 'D' :					/* Signed decimal */
4716 
+		case 'U' :					/* Unsigned decimal */
4717 
+			r = 10; break;
4718 
+		case 'X' :					/* Hexdecimal */
4719 
+			r = 16; break;
4720 
+		default:					/* Unknown type (pass-through) */
4721 
+			putc_bfd(&pb, c); continue;
4722 
+		}
4723 
+
4724 
+		/* Get an argument and put it in numeral */
4725 
+		v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
4726 
+		if (d == 'D' && (v & 0x80000000)) {
4727 
+			v = 0 - v;
4728 
+			f |= 8;
4729 
+		}
4730 
+		i = 0;
4731 
+		do {
4732 
+			d = (TCHAR)(v % r); v /= r;
4733 
+			if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
4734 
+			s[i++] = d + '0';
4735 
+		} while (v && i < sizeof s / sizeof s[0]);
4736 
+		if (f & 8) s[i++] = '-';
4737 
+		j = i; d = (f & 1) ? '0' : ' ';
4738 
+		while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
4739 
+		do putc_bfd(&pb, s[--i]); while (i);
4740 
+		while (j++ < w) putc_bfd(&pb, d);
4741 
+	}
4742 
+
4743 
+	va_end(arp);
4744 
+
4745 
+	if (   pb.idx >= 0		/* Flush buffered characters to the file */
4746 
+		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
4747 
+		&& (UINT)pb.idx == nw) return pb.nchr;
4748 
+	return EOF;
4749 
+}
4750 
+
4751 
+#endif /* !_FS_READONLY */
4752 
+#endif /* _USE_STRFUNC */