Merge tag 'fatfs-0.10c'

[z180-stamp.git] / fatfs / src / ff.c

/*----------------------------------------------------------------------------/\r
/  FatFs - FAT file system module  R0.10c                (C)ChaN, 2014\r
/-----------------------------------------------------------------------------/\r
/ FatFs module is a generic FAT file system module for small embedded systems.\r
/ This is a free software that opened for education, research and commercial\r
/ developments under license policy of following terms.\r
/\r
/  Copyright (C) 2014, ChaN, all right reserved.\r
/\r
/ * The FatFs module is a free software and there is NO WARRANTY.\r
/ * No restriction on use. You can use, modify and redistribute it for\r
/   personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.\r
/ * Redistributions of source code must retain the above copyright notice.\r
/\r
/-----------------------------------------------------------------------------/\r
/ Feb 26,'06 R0.00  Prototype.\r
/\r
/ Apr 29,'06 R0.01  First stable version.\r
/\r
/ Jun 01,'06 R0.02  Added FAT12 support.\r
/                   Removed unbuffered mode.\r
/                   Fixed a problem on small (<32M) partition.\r
/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).\r
/\r
/ Sep 22,'06 R0.03  Added f_rename().\r
/                   Changed option _FS_MINIMUM to _FS_MINIMIZE.\r
/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.\r
/                   Fixed f_mkdir() creates incorrect directory on FAT32.\r
/\r
/ Feb 04,'07 R0.04  Supported multiple drive system.\r
/                   Changed some interfaces for multiple drive system.\r
/                   Changed f_mountdrv() to f_mount().\r
/                   Added f_mkfs().\r
/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.\r
/                   Added a capability of extending file size to f_lseek().\r
/                   Added minimization level 3.\r
/                   Fixed an endian sensitive code in f_mkfs().\r
/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.\r
/                   Added FSINFO support.\r
/                   Fixed DBCS name can result FR_INVALID_NAME.\r
/                   Fixed short seek (<= csize) collapses the file object.\r
/\r
/ Aug 25,'07 R0.05  Changed arguments of f_read(), f_write() and f_mkfs().\r
/                   Fixed f_mkfs() on FAT32 creates incorrect FSINFO.\r
/                   Fixed f_mkdir() on FAT32 creates incorrect directory.\r
/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().\r
/                   Fixed off by one error at FAT sub-type determination.\r
/                   Fixed btr in f_read() can be mistruncated.\r
/                   Fixed cached sector is not flushed when create and close without write.\r
/\r
/ Apr 01,'08 R0.06  Added fputc(), fputs(), fprintf() and fgets().\r
/                   Improved performance of f_lseek() on moving to the same or following cluster.\r
/\r
/ Apr 01,'09 R0.07  Merged Tiny-FatFs as a configuration option. (_FS_TINY)\r
/                   Added long file name feature.\r
/                   Added multiple code page feature.\r
/                   Added re-entrancy for multitask operation.\r
/                   Added auto cluster size selection to f_mkfs().\r
/                   Added rewind option to f_readdir().\r
/                   Changed result code of critical errors.\r
/                   Renamed string functions to avoid name collision.\r
/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.\r
/                   Added multiple sector size feature.\r
/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.\r
/                   Fixed wrong cache control in f_lseek().\r
/                   Added relative path feature.\r
/                   Added f_chdir() and f_chdrive().\r
/                   Added proper case conversion to extended character.\r
/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.\r
/                   Fixed f_unlink() fails to remove a sub-directory on _FS_RPATH.\r
/                   Fixed name matching error on the 13 character boundary.\r
/                   Added a configuration option, _LFN_UNICODE.\r
/                   Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.\r
/\r
/ May 15,'10 R0.08  Added a memory configuration option. (_USE_LFN = 3)\r
/                   Added file lock feature. (_FS_SHARE)\r
/                   Added fast seek feature. (_USE_FASTSEEK)\r
/                   Changed some types on the API, XCHAR->TCHAR.\r
/                   Changed .fname in the FILINFO structure on Unicode cfg.\r
/                   String functions support UTF-8 encoding files on Unicode cfg.\r
/ Aug 16,'10 R0.08a Added f_getcwd().\r
/                   Added sector erase feature. (_USE_ERASE)\r
/                   Moved file lock semaphore table from fs object to the bss.\r
/                   Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.\r
/                   Fixed f_mkfs() creates wrong FAT32 volume.\r
/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().\r
/                   f_lseek() reports required table size on creating CLMP.\r
/                   Extended format syntax of f_printf().\r
/                   Ignores duplicated directory separators in given path name.\r
/\r
/ Sep 06,'11 R0.09  f_mkfs() supports multiple partition to complete the multiple partition feature.\r
/                   Added f_fdisk().\r
/ Aug 27,'12 R0.09a Changed f_open() and f_opendir() reject null object pointer to avoid crash.\r
/                   Changed option name _FS_SHARE to _FS_LOCK.\r
/                   Fixed assertion failure due to OS/2 EA on FAT12/16 volume.\r
/ Jan 24,'13 R0.09b Added f_setlabel() and f_getlabel().\r
/\r
/ Oct 02,'13 R0.10  Added selection of character encoding on the file. (_STRF_ENCODE)\r
/                   Added f_closedir().\r
/                   Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)\r
/                   Added forced mount feature with changes of f_mount().\r
/                   Improved behavior of volume auto detection.\r
/                   Improved write throughput of f_puts() and f_printf().\r
/                   Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().\r
/                   Fixed f_write() can be truncated when the file size is close to 4GB.\r
/                   Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.\r
/ Jan 15,'14 R0.10a Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)\r
/                   Added a configuration option of minimum sector size. (_MIN_SS)\r
/                   2nd argument of f_rename() can have a drive number and it will be ignored.\r
/                   Fixed f_mount() with forced mount fails when drive number is >= 1.\r
/                   Fixed f_close() invalidates the file object without volume lock.\r
/                   Fixed f_closedir() returns but the volume lock is left acquired.\r
/                   Fixed creation of an entry with LFN fails on too many SFN collisions.\r
/ May 19,'14 R0.10b Fixed a hard error in the disk I/O layer can collapse the directory entry.\r
/                   Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN.\r
/ Nov 09,'14 R0.10c Added a configuration option for the platforms without RTC. (_FS_NORTC)\r
/                   Fixed volume label created by Mac OS X cannot be retrieved with f_getlabel().\r
/                   Fixed a potential problem of FAT access that can appear on disk error.\r
/                   Fixed null pointer dereference on attempting to delete the root direcotry.\r
/---------------------------------------------------------------------------*/\r
\r
#include "ff.h"			/* Declarations of FatFs API */\r
#include "diskio.h"		/* Declarations of disk I/O functions */\r
\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Module Private Definitions\r
\r
---------------------------------------------------------------------------*/\r
\r
#if _FATFS != 80376	/* Revision ID */\r
#error Wrong include file (ff.h).\r
#endif\r
\r
\r
/* Reentrancy related */\r
#if _FS_REENTRANT\r
#if _USE_LFN == 1\r
#error Static LFN work area cannot be used at thread-safe configuration\r
#endif\r
#define	ENTER_FF(fs)		{ if (!lock_fs(fs)) return FR_TIMEOUT; }\r
#define	LEAVE_FF(fs, res)	{ unlock_fs(fs, res); return res; }\r
#else\r
#define	ENTER_FF(fs)\r
#define LEAVE_FF(fs, res)	return res\r
#endif\r
\r
#define	ABORT(fs, res)		{ fp->err = (BYTE)(res); LEAVE_FF(fs, res); }\r
\r
\r
/* Definitions of sector size */\r
#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)\r
#error Wrong sector size configuration\r
#endif\r
#if _MAX_SS == _MIN_SS\r
#define	SS(fs)	((UINT)_MAX_SS)	/* Fixed sector size */\r
#else\r
#define	SS(fs)	((fs)->ssize)	/* Variable sector size */\r
#endif\r
\r
\r
/* Timestamp feature */\r
#if _FS_NORTC\r
#define GET_FATTIME()	((DWORD)_NORTC_YEAR << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)\r
#else\r
#define GET_FATTIME()	get_fattime()\r
#endif\r
\r
\r
/* File access control feature */\r
#if _FS_LOCK\r
#if _FS_READONLY\r
#error _FS_LOCK must be 0 at read-only configuration\r
#endif\r
typedef struct {\r
	FATFS *fs;		/* Object ID 1, volume (NULL:blank entry) */\r
	DWORD clu;		/* Object ID 2, directory (0:root) */\r
	WORD idx;		/* Object ID 3, directory index */\r
	WORD ctr;		/* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */\r
} FILESEM;\r
#endif\r
\r
\r
\r
/* DBCS code ranges and SBCS extend character conversion table */\r
\r
#if _CODE_PAGE == 932	/* Japanese Shift-JIS */\r
#define _DF1S	0x81	/* DBC 1st byte range 1 start */\r
#define _DF1E	0x9F	/* DBC 1st byte range 1 end */\r
#define _DF2S	0xE0	/* DBC 1st byte range 2 start */\r
#define _DF2E	0xFC	/* DBC 1st byte range 2 end */\r
#define _DS1S	0x40	/* DBC 2nd byte range 1 start */\r
#define _DS1E	0x7E	/* DBC 2nd byte range 1 end */\r
#define _DS2S	0x80	/* DBC 2nd byte range 2 start */\r
#define _DS2E	0xFC	/* DBC 2nd byte range 2 end */\r
\r
#elif _CODE_PAGE == 936	/* Simplified Chinese GBK */\r
#define _DF1S	0x81\r
#define _DF1E	0xFE\r
#define _DS1S	0x40\r
#define _DS1E	0x7E\r
#define _DS2S	0x80\r
#define _DS2E	0xFE\r
\r
#elif _CODE_PAGE == 949	/* Korean */\r
#define _DF1S	0x81\r
#define _DF1E	0xFE\r
#define _DS1S	0x41\r
#define _DS1E	0x5A\r
#define _DS2S	0x61\r
#define _DS2E	0x7A\r
#define _DS3S	0x81\r
#define _DS3E	0xFE\r
\r
#elif _CODE_PAGE == 950	/* Traditional Chinese Big5 */\r
#define _DF1S	0x81\r
#define _DF1E	0xFE\r
#define _DS1S	0x40\r
#define _DS1E	0x7E\r
#define _DS2S	0xA1\r
#define _DS2E	0xFE\r
\r
#elif _CODE_PAGE == 437	/* U.S. (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 720	/* Arabic (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 737	/* Greek (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 775	/* Baltic (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 850	/* Multilingual Latin 1 (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 852	/* Latin 2 (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 855	/* Cyrillic (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 857	/* Turkish (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 858	/* Multilingual Latin 1 + Euro (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 862	/* Hebrew (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 866	/* Russian (OEM) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 874	/* Thai (OEM, Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1253 /* Greek (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1254 /* Turkish (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1256 /* Arabic (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1257 /* Baltic (Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */\r
#define _DF1S	0\r
#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, \\r
				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, \\r
				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, \\r
				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}\r
\r
#elif _CODE_PAGE == 1	/* ASCII (for only non-LFN cfg) */\r
#if _USE_LFN\r
#error Cannot use LFN feature without valid code page.\r
#endif\r
#define _DF1S	0\r
\r
#else\r
#error Unknown code page\r
\r
#endif\r
\r
\r
/* Character code support macros */\r
#define IsUpper(c)	(((c)>='A')&&((c)<='Z'))\r
#define IsLower(c)	(((c)>='a')&&((c)<='z'))\r
#define IsDigit(c)	(((c)>='0')&&((c)<='9'))\r
\r
#if _DF1S		/* Code page is DBCS */\r
\r
#ifdef _DF2S	/* Two 1st byte areas */\r
#define IsDBCS1(c)	(((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))\r
#else			/* One 1st byte area */\r
#define IsDBCS1(c)	((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)\r
#endif\r
\r
#ifdef _DS3S	/* Three 2nd byte areas */\r
#define IsDBCS2(c)	(((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))\r
#else			/* Two 2nd byte areas */\r
#define IsDBCS2(c)	(((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))\r
#endif\r
\r
#else			/* Code page is SBCS */\r
\r
#define IsDBCS1(c)	0\r
#define IsDBCS2(c)	0\r
\r
#endif /* _DF1S */\r
\r
\r
/* Name status flags */\r
#define NSFLAG		11		/* Index of name status byte in fn[] */\r
#define NS_LOSS		0x01	/* Out of 8.3 format */\r
#define NS_LFN		0x02	/* Force to create LFN entry */\r
#define NS_LAST		0x04	/* Last segment */\r
#define NS_BODY		0x08	/* Lower case flag (body) */\r
#define NS_EXT		0x10	/* Lower case flag (ext) */\r
#define NS_DOT		0x20	/* Dot entry */\r
\r
\r
/* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */\r
#define MIN_FAT16	4086U	/* Minimum number of clusters as FAT16 */\r
#define	MIN_FAT32	65526U	/* Minimum number of clusters as FAT32 */\r
\r
\r
/* FatFs refers the members in the FAT structures as byte array instead of\r
/ structure member because the structure is not binary compatible between\r
/ different platforms */\r
\r
#define BS_jmpBoot			0		/* x86 jump instruction (3) */\r
#define BS_OEMName			3		/* OEM name (8) */\r
#define BPB_BytsPerSec		11		/* Sector size [byte] (2) */\r
#define BPB_SecPerClus		13		/* Cluster size [sector] (1) */\r
#define BPB_RsvdSecCnt		14		/* Size of reserved area [sector] (2) */\r
#define BPB_NumFATs			16		/* Number of FAT copies (1) */\r
#define BPB_RootEntCnt		17		/* Number of root directory entries for FAT12/16 (2) */\r
#define BPB_TotSec16		19		/* Volume size [sector] (2) */\r
#define BPB_Media			21		/* Media descriptor (1) */\r
#define BPB_FATSz16			22		/* FAT size [sector] (2) */\r
#define BPB_SecPerTrk		24		/* Track size [sector] (2) */\r
#define BPB_NumHeads		26		/* Number of heads (2) */\r
#define BPB_HiddSec			28		/* Number of special hidden sectors (4) */\r
#define BPB_TotSec32		32		/* Volume size [sector] (4) */\r
#define BS_DrvNum			36		/* Physical drive number (2) */\r
#define BS_BootSig			38		/* Extended boot signature (1) */\r
#define BS_VolID			39		/* Volume serial number (4) */\r
#define BS_VolLab			43		/* Volume label (8) */\r
#define BS_FilSysType		54		/* File system type (1) */\r
#define BPB_FATSz32			36		/* FAT size [sector] (4) */\r
#define BPB_ExtFlags		40		/* Extended flags (2) */\r
#define BPB_FSVer			42		/* File system version (2) */\r
#define BPB_RootClus		44		/* Root directory first cluster (4) */\r
#define BPB_FSInfo			48		/* Offset of FSINFO sector (2) */\r
#define BPB_BkBootSec		50		/* Offset of backup boot sector (2) */\r
#define BS_DrvNum32			64		/* Physical drive number (2) */\r
#define BS_BootSig32		66		/* Extended boot signature (1) */\r
#define BS_VolID32			67		/* Volume serial number (4) */\r
#define BS_VolLab32			71		/* Volume label (8) */\r
#define BS_FilSysType32		82		/* File system type (1) */\r
#define	FSI_LeadSig			0		/* FSI: Leading signature (4) */\r
#define	FSI_StrucSig		484		/* FSI: Structure signature (4) */\r
#define	FSI_Free_Count		488		/* FSI: Number of free clusters (4) */\r
#define	FSI_Nxt_Free		492		/* FSI: Last allocated cluster (4) */\r
#define MBR_Table			446		/* MBR: Partition table offset (2) */\r
#define	SZ_PTE				16		/* MBR: Size of a partition table entry */\r
#define BS_55AA				510		/* Signature word (2) */\r
\r
#define	DIR_Name			0		/* Short file name (11) */\r
#define	DIR_Attr			11		/* Attribute (1) */\r
#define	DIR_NTres			12		/* NT flag (1) */\r
#define DIR_CrtTimeTenth	13		/* Created time sub-second (1) */\r
#define	DIR_CrtTime			14		/* Created time (2) */\r
#define	DIR_CrtDate			16		/* Created date (2) */\r
#define DIR_LstAccDate		18		/* Last accessed date (2) */\r
#define	DIR_FstClusHI		20		/* Higher 16-bit of first cluster (2) */\r
#define	DIR_WrtTime			22		/* Modified time (2) */\r
#define	DIR_WrtDate			24		/* Modified date (2) */\r
#define	DIR_FstClusLO		26		/* Lower 16-bit of first cluster (2) */\r
#define	DIR_FileSize		28		/* File size (4) */\r
#define	LDIR_Ord			0		/* LFN entry order and LLE flag (1) */\r
#define	LDIR_Attr			11		/* LFN attribute (1) */\r
#define	LDIR_Type			12		/* LFN type (1) */\r
#define	LDIR_Chksum			13		/* Sum of corresponding SFN entry */\r
#define	LDIR_FstClusLO		26		/* Filled by zero (0) */\r
#define	SZ_DIR				32		/* Size of a directory entry */\r
#define	LLE					0x40	/* Last long entry flag in LDIR_Ord */\r
#define	DDE					0xE5	/* Deleted directory entry mark in DIR_Name[0] */\r
#define	NDDE				0x05	/* Replacement of the character collides with DDE */\r
\r
\r
\r
\r
/*------------------------------------------------------------*/\r
/* Module private work area                                   */\r
/*------------------------------------------------------------*/\r
/* Remark: Uninitialized variables with static duration are\r
/  guaranteed zero/null at start-up. If not, either the linker\r
/  or start-up routine being used is out of ANSI-C standard.\r
*/\r
\r
#if _VOLUMES < 1 || _VOLUMES > 9\r
#error Wrong _VOLUMES setting\r
#endif\r
static FATFS *FatFs[_VOLUMES];	/* Pointer to the file system objects (logical drives) */\r
static WORD Fsid;				/* File system mount ID */\r
\r
#if _FS_RPATH && _VOLUMES >= 2\r
static BYTE CurrVol;			/* Current drive */\r
#endif\r
\r
#if _FS_LOCK\r
static FILESEM Files[_FS_LOCK];	/* Open object lock semaphores */\r
#endif\r
\r
#if _USE_LFN == 0			/* Non LFN feature */\r
#define	DEF_NAMEBUF			BYTE sfn[12]\r
#define INIT_BUF(dobj)		(dobj).fn = sfn\r
#define	FREE_BUF()\r
#else\r
#if _MAX_LFN < 12 || _MAX_LFN > 255\r
#error Wrong _MAX_LFN setting\r
#endif\r
#if _USE_LFN == 1			/* LFN feature with static working buffer */\r
static WCHAR LfnBuf[_MAX_LFN+1];\r
#define	DEF_NAMEBUF			BYTE sfn[12]\r
#define INIT_BUF(dobj)		{ (dobj).fn = sfn; (dobj).lfn = LfnBuf; }\r
#define	FREE_BUF()\r
#elif _USE_LFN == 2 		/* LFN feature with dynamic working buffer on the stack */\r
#define	DEF_NAMEBUF			BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]\r
#define INIT_BUF(dobj)		{ (dobj).fn = sfn; (dobj).lfn = lbuf; }\r
#define	FREE_BUF()\r
#elif _USE_LFN == 3 		/* LFN feature with dynamic working buffer on the heap */\r
#define	DEF_NAMEBUF			BYTE sfn[12]; WCHAR *lfn\r
#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; }\r
#define	FREE_BUF()			ff_memfree(lfn)\r
#else\r
#error Wrong _USE_LFN setting\r
#endif\r
#endif\r
\r
#ifdef _EXCVT\r
static const BYTE ExCvt[] = _EXCVT;	/* Upper conversion table for extended characters */\r
#endif\r
\r
\r
\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Module Private Functions\r
\r
---------------------------------------------------------------------------*/\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* String functions                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
/* Copy memory to memory */\r
static\r
void mem_cpy (void* dst, const void* src, UINT cnt) {\r
	BYTE *d = (BYTE*)dst;\r
	const BYTE *s = (const BYTE*)src;\r
\r
#if _WORD_ACCESS == 1\r
	while (cnt >= sizeof (int)) {\r
		*(int*)d = *(int*)s;\r
		d += sizeof (int); s += sizeof (int);\r
		cnt -= sizeof (int);\r
	}\r
#endif\r
	while (cnt--)\r
		*d++ = *s++;\r
}\r
\r
/* Fill memory */\r
static\r
void mem_set (void* dst, int val, UINT cnt) {\r
	BYTE *d = (BYTE*)dst;\r
\r
	while (cnt--)\r
		*d++ = (BYTE)val;\r
}\r
\r
/* Compare memory to memory */\r
static\r
int mem_cmp (const void* dst, const void* src, UINT cnt) {\r
	const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;\r
	int r = 0;\r
\r
	while (cnt-- && (r = *d++ - *s++) == 0) ;\r
	return r;\r
}\r
\r
/* Check if chr is contained in the string */\r
static\r
int chk_chr (const char* str, int chr) {\r
	while (*str && *str != chr) str++;\r
	return *str;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Request/Release grant to access the volume                            */\r
/*-----------------------------------------------------------------------*/\r
#if _FS_REENTRANT\r
static\r
int lock_fs (\r
	FATFS* fs		/* File system object */\r
)\r
{\r
	return ff_req_grant(fs->sobj);\r
}\r
\r
\r
static\r
void unlock_fs (\r
	FATFS* fs,		/* File system object */\r
	FRESULT res		/* Result code to be returned */\r
)\r
{\r
	if (fs &&\r
		res != FR_NOT_ENABLED &&\r
		res != FR_INVALID_DRIVE &&\r
		res != FR_INVALID_OBJECT &&\r
		res != FR_TIMEOUT) {\r
		ff_rel_grant(fs->sobj);\r
	}\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* File lock control functions                                           */\r
/*-----------------------------------------------------------------------*/\r
#if _FS_LOCK\r
\r
static\r
FRESULT chk_lock (	/* Check if the file can be accessed */\r
	DIR* dp,		/* Directory object pointing the file to be checked */\r
	int acc			/* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */\r
)\r
{\r
	UINT i, be;\r
\r
	/* Search file semaphore table */\r
	for (i = be = 0; i < _FS_LOCK; i++) {\r
		if (Files[i].fs) {	/* Existing entry */\r
			if (Files[i].fs == dp->fs &&	 	/* Check if the object matched with an open object */\r
				Files[i].clu == dp->sclust &&\r
				Files[i].idx == dp->index) break;\r
		} else {			/* Blank entry */\r
			be = 1;\r
		}\r
	}\r
	if (i == _FS_LOCK)	/* The object is not opened */\r
		return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES;	/* Is there a blank entry for new object? */\r
\r
	/* The object has been opened. Reject any open against writing file and all write mode open */\r
	return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;\r
}\r
\r
\r
static\r
int enq_lock (void)	/* Check if an entry is available for a new object */\r
{\r
	UINT i;\r
\r
	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r
	return (i == _FS_LOCK) ? 0 : 1;\r
}\r
\r
\r
static\r
UINT inc_lock (	/* Increment object open counter and returns its index (0:Internal error) */\r
	DIR* dp,	/* Directory object pointing the file to register or increment */\r
	int acc		/* Desired access (0:Read, 1:Write, 2:Delete/Rename) */\r
)\r
{\r
	UINT i;\r
\r
\r
	for (i = 0; i < _FS_LOCK; i++) {	/* Find the object */\r
		if (Files[i].fs == dp->fs &&\r
			Files[i].clu == dp->sclust &&\r
			Files[i].idx == dp->index) break;\r
	}\r
\r
	if (i == _FS_LOCK) {				/* Not opened. Register it as new. */\r
		for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r
		if (i == _FS_LOCK) return 0;	/* No free entry to register (int err) */\r
		Files[i].fs = dp->fs;\r
		Files[i].clu = dp->sclust;\r
		Files[i].idx = dp->index;\r
		Files[i].ctr = 0;\r
	}\r
\r
	if (acc && Files[i].ctr) return 0;	/* Access violation (int err) */\r
\r
	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1;	/* Set semaphore value */\r
\r
	return i + 1;\r
}\r
\r
\r
static\r
FRESULT dec_lock (	/* Decrement object open counter */\r
	UINT i			/* Semaphore index (1..) */\r
)\r
{\r
	WORD n;\r
	FRESULT res;\r
\r
\r
	if (--i < _FS_LOCK) {	/* Shift index number origin from 0 */\r
		n = Files[i].ctr;\r
		if (n == 0x100) n = 0;		/* If write mode open, delete the entry */\r
		if (n) n--;					/* Decrement read mode open count */\r
		Files[i].ctr = n;\r
		if (!n) Files[i].fs = 0;	/* Delete the entry if open count gets zero */\r
		res = FR_OK;\r
	} else {\r
		res = FR_INT_ERR;			/* Invalid index nunber */\r
	}\r
	return res;\r
}\r
\r
\r
static\r
void clear_lock (	/* Clear lock entries of the volume */\r
	FATFS *fs\r
)\r
{\r
	UINT i;\r
\r
	for (i = 0; i < _FS_LOCK; i++) {\r
		if (Files[i].fs == fs) Files[i].fs = 0;\r
	}\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Move/Flush disk access window in the file system object               */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY\r
static\r
FRESULT sync_window (\r
	FATFS* fs		/* File system object */\r
)\r
{\r
	DWORD wsect;\r
	UINT nf;\r
	FRESULT res = FR_OK;\r
\r
\r
	if (fs->wflag) {	/* Write back the sector if it is dirty */\r
		wsect = fs->winsect;	/* Current sector number */\r
		if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {\r
			res = FR_DISK_ERR;\r
		} else {\r
			fs->wflag = 0;\r
			if (wsect - fs->fatbase < fs->fsize) {		/* Is it in the FAT area? */\r
				for (nf = fs->n_fats; nf >= 2; nf--) {	/* Reflect the change to all FAT copies */\r
					wsect += fs->fsize;\r
					disk_write(fs->drv, fs->win, wsect, 1);\r
				}\r
			}\r
		}\r
	}\r
	return res;\r
}\r
#endif\r
\r
\r
static\r
FRESULT move_window (\r
	FATFS* fs,		/* File system object */\r
	DWORD sector	/* Sector number to make appearance in the fs->win[] */\r
)\r
{\r
	FRESULT res = FR_OK;\r
\r
\r
	if (sector != fs->winsect) {	/* Window offset changed? */\r
#if !_FS_READONLY\r
		res = sync_window(fs);		/* Write-back changes */\r
#endif\r
		if (res == FR_OK) {			/* Fill sector window with new data */\r
			if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {\r
				sector = 0xFFFFFFFF;	/* Invalidate window if data is not reliable */\r
				res = FR_DISK_ERR;\r
			}\r
			fs->winsect = sector;\r
		}\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Synchronize file system and strage device                             */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY\r
static\r
FRESULT sync_fs (	/* FR_OK: successful, FR_DISK_ERR: failed */\r
	FATFS* fs		/* File system object */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	res = sync_window(fs);\r
	if (res == FR_OK) {\r
		/* Update FSINFO sector if needed */\r
		if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {\r
			/* Create FSINFO structure */\r
			mem_set(fs->win, 0, SS(fs));\r
			ST_WORD(fs->win+BS_55AA, 0xAA55);\r
			ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);\r
			ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);\r
			ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);\r
			ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);\r
			/* Write it into the FSINFO sector */\r
			fs->winsect = fs->volbase + 1;\r
			disk_write(fs->drv, fs->win, fs->winsect, 1);\r
			fs->fsi_flag = 0;\r
		}\r
		/* Make sure that no pending write process in the physical drive */\r
		if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)\r
			res = FR_DISK_ERR;\r
	}\r
\r
	return res;\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get sector# from cluster#                                             */\r
/*-----------------------------------------------------------------------*/\r
/* Hidden API for hacks and disk tools */\r
\r
DWORD clust2sect (	/* !=0: Sector number, 0: Failed - invalid cluster# */\r
	FATFS* fs,		/* File system object */\r
	DWORD clst		/* Cluster# to be converted */\r
)\r
{\r
	clst -= 2;\r
	if (clst >= fs->n_fatent - 2) return 0;		/* Invalid cluster# */\r
	return clst * fs->csize + fs->database;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT access - Read value of a FAT entry                                */\r
/*-----------------------------------------------------------------------*/\r
/* Hidden API for hacks and disk tools */\r
\r
DWORD get_fat (	/* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */\r
	FATFS* fs,	/* File system object */\r
	DWORD clst	/* FAT item index (cluster#) to get the value */\r
)\r
{\r
	UINT wc, bc;\r
	BYTE *p;\r
	DWORD val;\r
\r
\r
	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */\r
		val = 1;	/* Internal error */\r
\r
	} else {\r
		val = 0xFFFFFFFF;	/* Default value falls on disk error */\r
\r
		switch (fs->fs_type) {\r
		case FS_FAT12 :\r
			bc = (UINT)clst; bc += bc / 2;\r
			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
			wc = fs->win[bc++ % SS(fs)];\r
			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
			wc |= fs->win[bc % SS(fs)] << 8;\r
			val = clst & 1 ? wc >> 4 : (wc & 0xFFF);\r
			break;\r
\r
		case FS_FAT16 :\r
			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;\r
			p = &fs->win[clst * 2 % SS(fs)];\r
			val = LD_WORD(p);\r
			break;\r
\r
		case FS_FAT32 :\r
			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r
			p = &fs->win[clst * 4 % SS(fs)];\r
			val = LD_DWORD(p) & 0x0FFFFFFF;\r
			break;\r
\r
		default:\r
			val = 1;	/* Internal error */\r
		}\r
	}\r
\r
	return val;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT access - Change value of a FAT entry                              */\r
/*-----------------------------------------------------------------------*/\r
/* Hidden API for hacks and disk tools */\r
\r
#if !_FS_READONLY\r
FRESULT put_fat (\r
	FATFS* fs,	/* File system object */\r
	DWORD clst,	/* FAT item index (cluster#) to be set */\r
	DWORD val	/* New value to mark the cluster */\r
)\r
{\r
	UINT bc;\r
	BYTE *p;\r
	FRESULT res;\r
\r
\r
	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */\r
		res = FR_INT_ERR;\r
\r
	} else {\r
		switch (fs->fs_type) {\r
		case FS_FAT12 :\r
			bc = (UINT)clst; bc += bc / 2;\r
			res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
			if (res != FR_OK) break;\r
			p = &fs->win[bc++ % SS(fs)];\r
			*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;\r
			fs->wflag = 1;\r
			res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
			if (res != FR_OK) break;\r
			p = &fs->win[bc % SS(fs)];\r
			*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));\r
			fs->wflag = 1;\r
			break;\r
\r
		case FS_FAT16 :\r
			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));\r
			if (res != FR_OK) break;\r
			p = &fs->win[clst * 2 % SS(fs)];\r
			ST_WORD(p, (WORD)val);\r
			fs->wflag = 1;\r
			break;\r
\r
		case FS_FAT32 :\r
			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));\r
			if (res != FR_OK) break;\r
			p = &fs->win[clst * 4 % SS(fs)];\r
			val |= LD_DWORD(p) & 0xF0000000;\r
			ST_DWORD(p, val);\r
			fs->wflag = 1;\r
			break;\r
\r
		default :\r
			res = FR_INT_ERR;\r
		}\r
	}\r
\r
	return res;\r
}\r
#endif /* !_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Remove a cluster chain                                 */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY\r
static\r
FRESULT remove_chain (\r
	FATFS* fs,			/* File system object */\r
	DWORD clst			/* Cluster# to remove a chain from */\r
)\r
{\r
	FRESULT res;\r
	DWORD nxt;\r
#if _USE_TRIM\r
	DWORD scl = clst, ecl = clst, rt[2];\r
#endif\r
\r
	if (clst < 2 || clst >= fs->n_fatent) {	/* Check range */\r
		res = FR_INT_ERR;\r
\r
	} else {\r
		res = FR_OK;\r
		while (clst < fs->n_fatent) {			/* Not a last link? */\r
			nxt = get_fat(fs, clst);			/* Get cluster status */\r
			if (nxt == 0) break;				/* Empty cluster? */\r
			if (nxt == 1) { res = FR_INT_ERR; break; }	/* Internal error? */\r
			if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }	/* Disk error? */\r
			res = put_fat(fs, clst, 0);			/* Mark the cluster "empty" */\r
			if (res != FR_OK) break;\r
			if (fs->free_clust != 0xFFFFFFFF) {	/* Update FSINFO */\r
				fs->free_clust++;\r
				fs->fsi_flag |= 1;\r
			}\r
#if _USE_TRIM\r
			if (ecl + 1 == nxt) {	/* Is next cluster contiguous? */\r
				ecl = nxt;\r
			} else {				/* End of contiguous clusters */ \r
				rt[0] = clust2sect(fs, scl);					/* Start sector */\r
				rt[1] = clust2sect(fs, ecl) + fs->csize - 1;	/* End sector */\r
				disk_ioctl(fs->drv, CTRL_TRIM, rt);				/* Erase the block */\r
				scl = ecl = nxt;\r
			}\r
#endif\r
			clst = nxt;	/* Next cluster */\r
		}\r
	}\r
\r
	return res;\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Stretch or Create a cluster chain                      */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY\r
static\r
DWORD create_chain (	/* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */\r
	FATFS* fs,			/* File system object */\r
	DWORD clst			/* Cluster# to stretch. 0 means create a new chain. */\r
)\r
{\r
	DWORD cs, ncl, scl;\r
	FRESULT res;\r
\r
\r
	if (clst == 0) {		/* Create a new chain */\r
		scl = fs->last_clust;			/* Get suggested start point */\r
		if (!scl || scl >= fs->n_fatent) scl = 1;\r
	}\r
	else {					/* Stretch the current chain */\r
		cs = get_fat(fs, clst);			/* Check the cluster status */\r
		if (cs < 2) return 1;			/* Invalid value */\r
		if (cs == 0xFFFFFFFF) return cs;	/* A disk error occurred */\r
		if (cs < fs->n_fatent) return cs;	/* It is already followed by next cluster */\r
		scl = clst;\r
	}\r
\r
	ncl = scl;				/* Start cluster */\r
	for (;;) {\r
		ncl++;							/* Next cluster */\r
		if (ncl >= fs->n_fatent) {		/* Check wrap around */\r
			ncl = 2;\r
			if (ncl > scl) return 0;	/* No free cluster */\r
		}\r
		cs = get_fat(fs, ncl);			/* Get the cluster status */\r
		if (cs == 0) break;				/* Found a free cluster */\r
		if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */\r
			return cs;\r
		if (ncl == scl) return 0;		/* No free cluster */\r
	}\r
\r
	res = put_fat(fs, ncl, 0x0FFFFFFF);	/* Mark the new cluster "last link" */\r
	if (res == FR_OK && clst != 0) {\r
		res = put_fat(fs, clst, ncl);	/* Link it to the previous one if needed */\r
	}\r
	if (res == FR_OK) {\r
		fs->last_clust = ncl;			/* Update FSINFO */\r
		if (fs->free_clust != 0xFFFFFFFF) {\r
			fs->free_clust--;\r
			fs->fsi_flag |= 1;\r
		}\r
	} else {\r
		ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;\r
	}\r
\r
	return ncl;		/* Return new cluster number or error code */\r
}\r
#endif /* !_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Convert offset into cluster with link map table        */\r
/*-----------------------------------------------------------------------*/\r
\r
#if _USE_FASTSEEK\r
static\r
DWORD clmt_clust (	/* <2:Error, >=2:Cluster number */\r
	FIL* fp,		/* Pointer to the file object */\r
	DWORD ofs		/* File offset to be converted to cluster# */\r
)\r
{\r
	DWORD cl, ncl, *tbl;\r
\r
\r
	tbl = fp->cltbl + 1;	/* Top of CLMT */\r
	cl = ofs / SS(fp->fs) / fp->fs->csize;	/* Cluster order from top of the file */\r
	for (;;) {\r
		ncl = *tbl++;			/* Number of cluters in the fragment */\r
		if (!ncl) return 0;		/* End of table? (error) */\r
		if (cl < ncl) break;	/* In this fragment? */\r
		cl -= ncl; tbl++;		/* Next fragment */\r
	}\r
	return cl + *tbl;	/* Return the cluster number */\r
}\r
#endif	/* _USE_FASTSEEK */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Set directory index                              */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT dir_sdi (\r
	DIR* dp,		/* Pointer to directory object */\r
	UINT idx		/* Index of directory table */\r
)\r
{\r
	DWORD clst, sect;\r
	UINT ic;\r
\r
\r
	dp->index = (WORD)idx;	/* Current index */\r
	clst = dp->sclust;		/* Table start cluster (0:root) */\r
	if (clst == 1 || clst >= dp->fs->n_fatent)	/* Check start cluster range */\r
		return FR_INT_ERR;\r
	if (!clst && dp->fs->fs_type == FS_FAT32)	/* Replace cluster# 0 with root cluster# if in FAT32 */\r
		clst = dp->fs->dirbase;\r
\r
	if (clst == 0) {	/* Static table (root-directory in FAT12/16) */\r
		if (idx >= dp->fs->n_rootdir)	/* Is index out of range? */\r
			return FR_INT_ERR;\r
		sect = dp->fs->dirbase;\r
	}\r
	else {				/* Dynamic table (root-directory in FAT32 or sub-directory) */\r
		ic = SS(dp->fs) / SZ_DIR * dp->fs->csize;	/* Entries per cluster */\r
		while (idx >= ic) {	/* Follow cluster chain */\r
			clst = get_fat(dp->fs, clst);				/* Get next cluster */\r
			if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */\r
			if (clst < 2 || clst >= dp->fs->n_fatent)	/* Reached to end of table or internal error */\r
				return FR_INT_ERR;\r
			idx -= ic;\r
		}\r
		sect = clust2sect(dp->fs, clst);\r
	}\r
	dp->clust = clst;	/* Current cluster# */\r
	if (!sect) return FR_INT_ERR;\r
	dp->sect = sect + idx / (SS(dp->fs) / SZ_DIR);					/* Sector# of the directory entry */\r
	dp->dir = dp->fs->win + (idx % (SS(dp->fs) / SZ_DIR)) * SZ_DIR;	/* Ptr to the entry in the sector */\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Move directory table index next                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT dir_next (	/* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */\r
	DIR* dp,		/* Pointer to the directory object */\r
	int stretch		/* 0: Do not stretch table, 1: Stretch table if needed */\r
)\r
{\r
	DWORD clst;\r
	UINT i;\r
\r
\r
	i = dp->index + 1;\r
	if (!(i & 0xFFFF) || !dp->sect)	/* Report EOT when index has reached 65535 */\r
		return FR_NO_FILE;\r
\r
	if (!(i % (SS(dp->fs) / SZ_DIR))) {	/* Sector changed? */\r
		dp->sect++;					/* Next sector */\r
\r
		if (!dp->clust) {		/* Static table */\r
			if (i >= dp->fs->n_rootdir)	/* Report EOT if it reached end of static table */\r
				return FR_NO_FILE;\r
		}\r
		else {					/* Dynamic table */\r
			if (((i / (SS(dp->fs) / SZ_DIR)) & (dp->fs->csize - 1)) == 0) {	/* Cluster changed? */\r
				clst = get_fat(dp->fs, dp->clust);				/* Get next cluster */\r
				if (clst <= 1) return FR_INT_ERR;\r
				if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
				if (clst >= dp->fs->n_fatent) {					/* If it reached end of dynamic table, */\r
#if !_FS_READONLY\r
					UINT c;\r
					if (!stretch) return FR_NO_FILE;			/* If do not stretch, report EOT */\r
					clst = create_chain(dp->fs, dp->clust);		/* Stretch cluster chain */\r
					if (clst == 0) return FR_DENIED;			/* No free cluster */\r
					if (clst == 1) return FR_INT_ERR;\r
					if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
					/* Clean-up stretched table */\r
					if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */\r
					mem_set(dp->fs->win, 0, SS(dp->fs));		/* Clear window buffer */\r
					dp->fs->winsect = clust2sect(dp->fs, clst);	/* Cluster start sector */\r
					for (c = 0; c < dp->fs->csize; c++) {		/* Fill the new cluster with 0 */\r
						dp->fs->wflag = 1;\r
						if (sync_window(dp->fs)) return FR_DISK_ERR;\r
						dp->fs->winsect++;\r
					}\r
					dp->fs->winsect -= c;						/* Rewind window offset */\r
#else\r
					if (!stretch) return FR_NO_FILE;			/* If do not stretch, report EOT (this is to suppress warning) */\r
					return FR_NO_FILE;							/* Report EOT */\r
#endif\r
				}\r
				dp->clust = clst;				/* Initialize data for new cluster */\r
				dp->sect = clust2sect(dp->fs, clst);\r
			}\r
		}\r
	}\r
\r
	dp->index = (WORD)i;	/* Current index */\r
	dp->dir = dp->fs->win + (i % (SS(dp->fs) / SZ_DIR)) * SZ_DIR;	/* Current entry in the window */\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Reserve directory entry                          */\r
/*-----------------------------------------------------------------------*/\r
\r
#if !_FS_READONLY\r
static\r
FRESULT dir_alloc (\r
	DIR* dp,	/* Pointer to the directory object */\r
	UINT nent	/* Number of contiguous entries to allocate (1-21) */\r
)\r
{\r
	FRESULT res;\r
	UINT n;\r
\r
\r
	res = dir_sdi(dp, 0);\r
	if (res == FR_OK) {\r
		n = 0;\r
		do {\r
			res = move_window(dp->fs, dp->sect);\r
			if (res != FR_OK) break;\r
			if (dp->dir[0] == DDE || dp->dir[0] == 0) {	/* Is it a free entry? */\r
				if (++n == nent) break;	/* A block of contiguous free entries is found */\r
			} else {\r
				n = 0;					/* Not a blank entry. Restart to search */\r
			}\r
			res = dir_next(dp, 1);		/* Next entry with table stretch enabled */\r
		} while (res == FR_OK);\r
	}\r
	if (res == FR_NO_FILE) res = FR_DENIED;	/* No directory entry to allocate */\r
	return res;\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Load/Store start cluster number                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
DWORD ld_clust (\r
	FATFS* fs,	/* Pointer to the fs object */\r
	BYTE* dir	/* Pointer to the directory entry */\r
)\r
{\r
	DWORD cl;\r
\r
	cl = LD_WORD(dir+DIR_FstClusLO);\r
	if (fs->fs_type == FS_FAT32)\r
		cl |= (DWORD)LD_WORD(dir+DIR_FstClusHI) << 16;\r
\r
	return cl;\r
}\r
\r
\r
#if !_FS_READONLY\r
static\r
void st_clust (\r
	BYTE* dir,	/* Pointer to the directory entry */\r
	DWORD cl	/* Value to be set */\r
)\r
{\r
	ST_WORD(dir+DIR_FstClusLO, cl);\r
	ST_WORD(dir+DIR_FstClusHI, cl >> 16);\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry   */\r
/*-----------------------------------------------------------------------*/\r
#if _USE_LFN\r
static\r
const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};	/* Offset of LFN characters in the directory entry */\r
\r
\r
static\r
int cmp_lfn (			/* 1:Matched, 0:Not matched */\r
	WCHAR* lfnbuf,		/* Pointer to the LFN to be compared */\r
	BYTE* dir			/* Pointer to the directory entry containing a part of LFN */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc, uc;\r
\r
\r
	i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13;	/* Get offset in the LFN buffer */\r
	s = 0; wc = 1;\r
	do {\r
		uc = LD_WORD(dir+LfnOfs[s]);	/* Pick an LFN character from the entry */\r
		if (wc) {	/* Last character has not been processed */\r
			wc = ff_wtoupper(uc);		/* Convert it to upper case */\r
			if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++]))	/* Compare it */\r
				return 0;				/* Not matched */\r
		} else {\r
			if (uc != 0xFFFF) return 0;	/* Check filler */\r
		}\r
	} while (++s < 13);				/* Repeat until all characters in the entry are checked */\r
\r
	if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i])	/* Last segment matched but different length */\r
		return 0;\r
\r
	return 1;						/* The part of LFN matched */\r
}\r
\r
\r
\r
static\r
int pick_lfn (			/* 1:Succeeded, 0:Buffer overflow */\r
	WCHAR* lfnbuf,		/* Pointer to the Unicode-LFN buffer */\r
	BYTE* dir			/* Pointer to the directory entry */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc, uc;\r
\r
\r
	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;	/* Offset in the LFN buffer */\r
\r
	s = 0; wc = 1;\r
	do {\r
		uc = LD_WORD(dir+LfnOfs[s]);		/* Pick an LFN character from the entry */\r
		if (wc) {	/* Last character has not been processed */\r
			if (i >= _MAX_LFN) return 0;	/* Buffer overflow? */\r
			lfnbuf[i++] = wc = uc;			/* Store it */\r
		} else {\r
			if (uc != 0xFFFF) return 0;		/* Check filler */\r
		}\r
	} while (++s < 13);						/* Read all character in the entry */\r
\r
	if (dir[LDIR_Ord] & LLE) {				/* Put terminator if it is the last LFN part */\r
		if (i >= _MAX_LFN) return 0;		/* Buffer overflow? */\r
		lfnbuf[i] = 0;\r
	}\r
\r
	return 1;\r
}\r
\r
\r
#if !_FS_READONLY\r
static\r
void fit_lfn (\r
	const WCHAR* lfnbuf,	/* Pointer to the LFN buffer */\r
	BYTE* dir,				/* Pointer to the directory entry */\r
	BYTE ord,				/* LFN order (1-20) */\r
	BYTE sum				/* SFN sum */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc;\r
\r
\r
	dir[LDIR_Chksum] = sum;			/* Set check sum */\r
	dir[LDIR_Attr] = AM_LFN;		/* Set attribute. LFN entry */\r
	dir[LDIR_Type] = 0;\r
	ST_WORD(dir+LDIR_FstClusLO, 0);\r
\r
	i = (ord - 1) * 13;				/* Get offset in the LFN buffer */\r
	s = wc = 0;\r
	do {\r
		if (wc != 0xFFFF) wc = lfnbuf[i++];	/* Get an effective character */\r
		ST_WORD(dir+LfnOfs[s], wc);	/* Put it */\r
		if (!wc) wc = 0xFFFF;		/* Padding characters following last character */\r
	} while (++s < 13);\r
	if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE;	/* Bottom LFN part is the start of LFN sequence */\r
	dir[LDIR_Ord] = ord;			/* Set the LFN order */\r
}\r
\r
#endif\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Create numbered name                                                  */\r
/*-----------------------------------------------------------------------*/\r
#if _USE_LFN\r
static\r
void gen_numname (\r
	BYTE* dst,			/* Pointer to the buffer to store numbered SFN */\r
	const BYTE* src,	/* Pointer to SFN */\r
	const WCHAR* lfn,	/* Pointer to LFN */\r
	UINT seq			/* Sequence number */\r
)\r
{\r
	BYTE ns[8], c;\r
	UINT i, j;\r
\r
\r
	mem_cpy(dst, src, 11);\r
\r
	if (seq > 5) {	/* On many collisions, generate a hash number instead of sequential number */\r
		WCHAR wc;\r
		DWORD sr = seq;\r
\r
		while (*lfn) {	/* Create a CRC */\r
			wc = *lfn++;\r
			for (i = 0; i < 16; i++) {\r
				sr = (sr << 1) + (wc & 1);\r
				wc >>= 1;\r
				if (sr & 0x10000) sr ^= 0x11021;\r
			}\r
		}\r
		seq = (UINT)sr;\r
	}\r
\r
	/* itoa (hexdecimal) */\r
	i = 7;\r
	do {\r
		c = (seq % 16) + '0';\r
		if (c > '9') c += 7;\r
		ns[i--] = c;\r
		seq /= 16;\r
	} while (seq);\r
	ns[i] = '~';\r
\r
	/* Append the number */\r
	for (j = 0; j < i && dst[j] != ' '; j++) {\r
		if (IsDBCS1(dst[j])) {\r
			if (j == i - 1) break;\r
			j++;\r
		}\r
	}\r
	do {\r
		dst[j++] = (i < 8) ? ns[i++] : ' ';\r
	} while (j < 8);\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Calculate sum of an SFN                                               */\r
/*-----------------------------------------------------------------------*/\r
#if _USE_LFN\r
static\r
BYTE sum_sfn (\r
	const BYTE* dir		/* Pointer to the SFN entry */\r
)\r
{\r
	BYTE sum = 0;\r
	UINT n = 11;\r
\r
	do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);\r
	return sum;\r
}\r
#endif\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Find an object in the directory                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT dir_find (\r
	DIR* dp			/* Pointer to the directory object linked to the file name */\r
)\r
{\r
	FRESULT res;\r
	BYTE c, *dir;\r
#if _USE_LFN\r
	BYTE a, ord, sum;\r
#endif\r
\r
	res = dir_sdi(dp, 0);			/* Rewind directory object */\r
	if (res != FR_OK) return res;\r
\r
#if _USE_LFN\r
	ord = sum = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */\r
#endif\r
	do {\r
		res = move_window(dp->fs, dp->sect);\r
		if (res != FR_OK) break;\r
		dir = dp->dir;					/* Ptr to the directory entry of current index */\r
		c = dir[DIR_Name];\r
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */\r
#if _USE_LFN	/* LFN configuration */\r
		a = dir[DIR_Attr] & AM_MASK;\r
		if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) {	/* An entry without valid data */\r
			ord = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */\r
		} else {\r
			if (a == AM_LFN) {			/* An LFN entry is found */\r
				if (dp->lfn) {\r
					if (c & LLE) {		/* Is it start of LFN sequence? */\r
						sum = dir[LDIR_Chksum];\r
						c &= ~LLE; ord = c;	/* LFN start order */\r
						dp->lfn_idx = dp->index;	/* Start index of LFN */\r
					}\r
					/* Check validity of the LFN entry and compare it with given name */\r
					ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;\r
				}\r
			} else {					/* An SFN entry is found */\r
				if (!ord && sum == sum_sfn(dir)) break;	/* LFN matched? */\r
				if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break;	/* SFN matched? */\r
				ord = 0xFF; dp->lfn_idx = 0xFFFF;	/* Reset LFN sequence */\r
			}\r
		}\r
#else		/* Non LFN configuration */\r
		if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */\r
			break;\r
#endif\r
		res = dir_next(dp, 0);		/* Next entry */\r
	} while (res == FR_OK);\r
\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read an object from the directory                                     */\r
/*-----------------------------------------------------------------------*/\r
#if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2\r
static\r
FRESULT dir_read (\r
	DIR* dp,		/* Pointer to the directory object */\r
	int vol			/* Filtered by 0:file/directory or 1:volume label */\r
)\r
{\r
	FRESULT res;\r
	BYTE a, c, *dir;\r
#if _USE_LFN\r
	BYTE ord = 0xFF, sum = 0xFF;\r
#endif\r
\r
	res = FR_NO_FILE;\r
	while (dp->sect) {\r
		res = move_window(dp->fs, dp->sect);\r
		if (res != FR_OK) break;\r
		dir = dp->dir;					/* Ptr to the directory entry of current index */\r
		c = dir[DIR_Name];\r
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */\r
		a = dir[DIR_Attr] & AM_MASK;\r
#if _USE_LFN	/* LFN configuration */\r
		if (c == DDE || (!_FS_RPATH && c == '.') || (int)((a & ~AM_ARC) == AM_VOL) != vol) {	/* An entry without valid data */\r
			ord = 0xFF;\r
		} else {\r
			if (a == AM_LFN) {			/* An LFN entry is found */\r
				if (c & LLE) {			/* Is it start of LFN sequence? */\r
					sum = dir[LDIR_Chksum];\r
					c &= ~LLE; ord = c;\r
					dp->lfn_idx = dp->index;\r
				}\r
				/* Check LFN validity and capture it */\r
				ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;\r
			} else {					/* An SFN entry is found */\r
				if (ord || sum != sum_sfn(dir))	/* Is there a valid LFN? */\r
					dp->lfn_idx = 0xFFFF;		/* It has no LFN. */\r
				break;\r
			}\r
		}\r
#else		/* Non LFN configuration */\r
		if (c != DDE && (_FS_RPATH || c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol)	/* Is it a valid entry? */\r
			break;\r
#endif\r
		res = dir_next(dp, 0);				/* Next entry */\r
		if (res != FR_OK) break;\r
	}\r
\r
	if (res != FR_OK) dp->sect = 0;\r
\r
	return res;\r
}\r
#endif	/* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Register an object to the directory                                   */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY\r
static\r
FRESULT dir_register (	/* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */\r
	DIR* dp				/* Target directory with object name to be created */\r
)\r
{\r
	FRESULT res;\r
#if _USE_LFN	/* LFN configuration */\r
	UINT n, nent;\r
	BYTE sn[12], *fn, sum;\r
	WCHAR *lfn;\r
\r
\r
	fn = dp->fn; lfn = dp->lfn;\r
	mem_cpy(sn, fn, 12);\r
\r
	if (_FS_RPATH && (sn[NSFLAG] & NS_DOT))		/* Cannot create dot entry */\r
		return FR_INVALID_NAME;\r
\r
	if (sn[NSFLAG] & NS_LOSS) {			/* When LFN is out of 8.3 format, generate a numbered name */\r
		fn[NSFLAG] = 0; dp->lfn = 0;			/* Find only SFN */\r
		for (n = 1; n < 100; n++) {\r
			gen_numname(fn, sn, lfn, n);	/* Generate a numbered name */\r
			res = dir_find(dp);				/* Check if the name collides with existing SFN */\r
			if (res != FR_OK) break;\r
		}\r
		if (n == 100) return FR_DENIED;		/* Abort if too many collisions */\r
		if (res != FR_NO_FILE) return res;	/* Abort if the result is other than 'not collided' */\r
		fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;\r
	}\r
\r
	if (sn[NSFLAG] & NS_LFN) {			/* When LFN is to be created, allocate entries for an SFN + LFNs. */\r
		for (n = 0; lfn[n]; n++) ;\r
		nent = (n + 25) / 13;\r
	} else {						/* Otherwise allocate an entry for an SFN  */\r
		nent = 1;\r
	}\r
	res = dir_alloc(dp, nent);		/* Allocate entries */\r
\r
	if (res == FR_OK && --nent) {	/* Set LFN entry if needed */\r
		res = dir_sdi(dp, dp->index - nent);\r
		if (res == FR_OK) {\r
			sum = sum_sfn(dp->fn);	/* Sum value of the SFN tied to the LFN */\r
			do {					/* Store LFN entries in bottom first */\r
				res = move_window(dp->fs, dp->sect);\r
				if (res != FR_OK) break;\r
				fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);\r
				dp->fs->wflag = 1;\r
				res = dir_next(dp, 0);	/* Next entry */\r
			} while (res == FR_OK && --nent);\r
		}\r
	}\r
#else	/* Non LFN configuration */\r
	res = dir_alloc(dp, 1);		/* Allocate an entry for SFN */\r
#endif\r
\r
	if (res == FR_OK) {				/* Set SFN entry */\r
		res = move_window(dp->fs, dp->sect);\r
		if (res == FR_OK) {\r
			mem_set(dp->dir, 0, SZ_DIR);	/* Clean the entry */\r
			mem_cpy(dp->dir, dp->fn, 11);	/* Put SFN */\r
#if _USE_LFN\r
			dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT);	/* Put NT flag */\r
#endif\r
			dp->fs->wflag = 1;\r
		}\r
	}\r
\r
	return res;\r
}\r
#endif /* !_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Remove an object from the directory                                   */\r
/*-----------------------------------------------------------------------*/\r
#if !_FS_READONLY && !_FS_MINIMIZE\r
static\r
FRESULT dir_remove (	/* FR_OK: Successful, FR_DISK_ERR: A disk error */\r
	DIR* dp				/* Directory object pointing the entry to be removed */\r
)\r
{\r
	FRESULT res;\r
#if _USE_LFN	/* LFN configuration */\r
	UINT i;\r
\r
	i = dp->index;	/* SFN index */\r
	res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx);	/* Goto the SFN or top of the LFN entries */\r
	if (res == FR_OK) {\r
		do {\r
			res = move_window(dp->fs, dp->sect);\r
			if (res != FR_OK) break;\r
			mem_set(dp->dir, 0, SZ_DIR);	/* Clear and mark the entry "deleted" */\r
			*dp->dir = DDE;\r
			dp->fs->wflag = 1;\r
			if (dp->index >= i) break;	/* When reached SFN, all entries of the object has been deleted. */\r
			res = dir_next(dp, 0);		/* Next entry */\r
		} while (res == FR_OK);\r
		if (res == FR_NO_FILE) res = FR_INT_ERR;\r
	}\r
\r
#else			/* Non LFN configuration */\r
	res = dir_sdi(dp, dp->index);\r
	if (res == FR_OK) {\r
		res = move_window(dp->fs, dp->sect);\r
		if (res == FR_OK) {\r
			mem_set(dp->dir, 0, SZ_DIR);	/* Clear and mark the entry "deleted" */\r
			*dp->dir = DDE;\r
			dp->fs->wflag = 1;\r
		}\r
	}\r
#endif\r
\r
	return res;\r
}\r
#endif /* !_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get file information from directory entry                             */\r
/*-----------------------------------------------------------------------*/\r
#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2\r
static\r
void get_fileinfo (		/* No return code */\r
	DIR* dp,			/* Pointer to the directory object */\r
	FILINFO* fno	 	/* Pointer to the file information to be filled */\r
)\r
{\r
	UINT i;\r
	TCHAR *p, c;\r
\r
\r
	p = fno->fname;\r
	if (dp->sect) {		/* Get SFN */\r
		BYTE *dir = dp->dir;\r
\r
		i = 0;\r
		while (i < 11) {		/* Copy name body and extension */\r
			c = (TCHAR)dir[i++];\r
			if (c == ' ') continue;			/* Skip padding spaces */\r
			if (c == NDDE) c = (TCHAR)DDE;	/* Restore replaced DDE character */\r
			if (i == 9) *p++ = '.';			/* Insert a . if extension is exist */\r
#if _USE_LFN\r
			if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))\r
				c += 0x20;			/* To lower */\r
#if _LFN_UNICODE\r
			if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))\r
				c = c << 8 | dir[i++];\r
			c = ff_convert(c, 1);	/* OEM -> Unicode */\r
			if (!c) c = '?';\r
#endif\r
#endif\r
			*p++ = c;\r
		}\r
		fno->fattrib = dir[DIR_Attr];				/* Attribute */\r
		fno->fsize = LD_DWORD(dir+DIR_FileSize);	/* Size */\r
		fno->fdate = LD_WORD(dir+DIR_WrtDate);		/* Date */\r
		fno->ftime = LD_WORD(dir+DIR_WrtTime);		/* Time */\r
	}\r
	*p = 0;		/* Terminate SFN string by a \0 */\r
\r
#if _USE_LFN\r
	if (fno->lfname) {\r
		WCHAR w, *lfn;\r
\r
		i = 0; p = fno->lfname;\r
		if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) {	/* Get LFN if available */\r
			lfn = dp->lfn;\r
			while ((w = *lfn++) != 0) {		/* Get an LFN character */\r
#if !_LFN_UNICODE\r
				w = ff_convert(w, 0);		/* Unicode -> OEM */\r
				if (!w) { i = 0; break; }	/* No LFN if it could not be converted */\r
				if (_DF1S && w >= 0x100)	/* Put 1st byte if it is a DBC (always false on SBCS cfg) */\r
					p[i++] = (TCHAR)(w >> 8);\r
#endif\r
				if (i >= fno->lfsize - 1) { i = 0; break; }	/* No LFN if buffer overflow */\r
				p[i++] = (TCHAR)w;\r
			}\r
		}\r
		p[i] = 0;	/* Terminate LFN string by a \0 */\r
	}\r
#endif\r
}\r
#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2*/\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Pick a segment and create the object name in directory form           */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT create_name (\r
	DIR* dp,			/* Pointer to the directory object */\r
	const TCHAR** path	/* Pointer to pointer to the segment in the path string */\r
)\r
{\r
#if _USE_LFN	/* LFN configuration */\r
	BYTE b, cf;\r
	WCHAR w, *lfn;\r
	UINT i, ni, si, di;\r
	const TCHAR *p;\r
\r
	/* Create LFN in Unicode */\r
	for (p = *path; *p == '/' || *p == '\\'; p++) ;	/* Strip duplicated separator */\r
	lfn = dp->lfn;\r
	si = di = 0;\r
	for (;;) {\r
		w = p[si++];					/* Get a character */\r
		if (w < ' ' || w == '/' || w == '\\') break;	/* Break on end of segment */\r
		if (di >= _MAX_LFN)				/* Reject too long name */\r
			return FR_INVALID_NAME;\r
#if !_LFN_UNICODE\r
		w &= 0xFF;\r
		if (IsDBCS1(w)) {				/* Check if it is a DBC 1st byte (always false on SBCS cfg) */\r
			b = (BYTE)p[si++];			/* Get 2nd byte */\r
			if (!IsDBCS2(b))\r
				return FR_INVALID_NAME;	/* Reject invalid sequence */\r
			w = (w << 8) + b;			/* Create a DBC */\r
		}\r
		w = ff_convert(w, 1);			/* Convert ANSI/OEM to Unicode */\r
		if (!w) return FR_INVALID_NAME;	/* Reject invalid code */\r
#endif\r
		if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */\r
			return FR_INVALID_NAME;\r
		lfn[di++] = w;					/* Store the Unicode character */\r
	}\r
	*path = &p[si];						/* Return pointer to the next segment */\r
	cf = (w < ' ') ? NS_LAST : 0;		/* Set last segment flag if end of path */\r
#if _FS_RPATH\r
	if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */\r
		(di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {\r
		lfn[di] = 0;\r
		for (i = 0; i < 11; i++)\r
			dp->fn[i] = (i < di) ? '.' : ' ';\r
		dp->fn[i] = cf | NS_DOT;		/* This is a dot entry */\r
		return FR_OK;\r
	}\r
#endif\r
	while (di) {						/* Strip trailing spaces and dots */\r
		w = lfn[di-1];\r
		if (w != ' ' && w != '.') break;\r
		di--;\r
	}\r
	if (!di) return FR_INVALID_NAME;	/* Reject nul string */\r
\r
	lfn[di] = 0;						/* LFN is created */\r
\r
	/* Create SFN in directory form */\r
	mem_set(dp->fn, ' ', 11);\r
	for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;	/* Strip leading spaces and dots */\r
	if (si) cf |= NS_LOSS | NS_LFN;\r
	while (di && lfn[di - 1] != '.') di--;	/* Find extension (di<=si: no extension) */\r
\r
	b = i = 0; ni = 8;\r
	for (;;) {\r
		w = lfn[si++];					/* Get an LFN character */\r
		if (!w) break;					/* Break on end of the LFN */\r
		if (w == ' ' || (w == '.' && si != di)) {	/* Remove spaces and dots */\r
			cf |= NS_LOSS | NS_LFN; continue;\r
		}\r
\r
		if (i >= ni || si == di) {		/* Extension or end of SFN */\r
			if (ni == 11) {				/* Long extension */\r
				cf |= NS_LOSS | NS_LFN; break;\r
			}\r
			if (si != di) cf |= NS_LOSS | NS_LFN;	/* Out of 8.3 format */\r
			if (si > di) break;			/* No extension */\r
			si = di; i = 8; ni = 11;	/* Enter extension section */\r
			b <<= 2; continue;\r
		}\r
\r
		if (w >= 0x80) {				/* Non ASCII character */\r
#ifdef _EXCVT\r
			w = ff_convert(w, 0);		/* Unicode -> OEM code */\r
			if (w) w = ExCvt[w - 0x80];	/* Convert extended character to upper (SBCS) */\r
#else\r
			w = ff_convert(ff_wtoupper(w), 0);	/* Upper converted Unicode -> OEM code */\r
#endif\r
			cf |= NS_LFN;				/* Force create LFN entry */\r
		}\r
\r
		if (_DF1S && w >= 0x100) {		/* Double byte character (always false on SBCS cfg) */\r
			if (i >= ni - 1) {\r
				cf |= NS_LOSS | NS_LFN; i = ni; continue;\r
			}\r
			dp->fn[i++] = (BYTE)(w >> 8);\r
		} else {						/* Single byte character */\r
			if (!w || chk_chr("+,;=[]", w)) {	/* Replace illegal characters for SFN */\r
				w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */\r
			} else {\r
				if (IsUpper(w)) {		/* ASCII large capital */\r
					b |= 2;\r
				} else {\r
					if (IsLower(w)) {	/* ASCII small capital */\r
						b |= 1; w -= 0x20;\r
					}\r
				}\r
			}\r
		}\r
		dp->fn[i++] = (BYTE)w;\r
	}\r
\r
	if (dp->fn[0] == DDE) dp->fn[0] = NDDE;	/* If the first character collides with deleted mark, replace it with 0x05 */\r
\r
	if (ni == 8) b <<= 2;\r
	if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03)	/* Create LFN entry when there are composite capitals */\r
		cf |= NS_LFN;\r
	if (!(cf & NS_LFN)) {						/* When LFN is in 8.3 format without extended character, NT flags are created */\r
		if ((b & 0x03) == 0x01) cf |= NS_EXT;	/* NT flag (Extension has only small capital) */\r
		if ((b & 0x0C) == 0x04) cf |= NS_BODY;	/* NT flag (Filename has only small capital) */\r
	}\r
\r
	dp->fn[NSFLAG] = cf;	/* SFN is created */\r
\r
	return FR_OK;\r
\r
\r
#else	/* Non-LFN configuration */\r
	BYTE b, c, d, *sfn;\r
	UINT ni, si, i;\r
	const char *p;\r
\r
	/* Create file name in directory form */\r
	for (p = *path; *p == '/' || *p == '\\'; p++) ;	/* Strip duplicated separator */\r
	sfn = dp->fn;\r
	mem_set(sfn, ' ', 11);\r
	si = i = b = 0; ni = 8;\r
#if _FS_RPATH\r
	if (p[si] == '.') { /* Is this a dot entry? */\r
		for (;;) {\r
			c = (BYTE)p[si++];\r
			if (c != '.' || si >= 3) break;\r
			sfn[i++] = c;\r
		}\r
		if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;\r
		*path = &p[si];									/* Return pointer to the next segment */\r
		sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;	/* Set last segment flag if end of path */\r
		return FR_OK;\r
	}\r
#endif\r
	for (;;) {\r
		c = (BYTE)p[si++];\r
		if (c <= ' ' || c == '/' || c == '\\') break;	/* Break on end of segment */\r
		if (c == '.' || i >= ni) {\r
			if (ni != 8 || c != '.') return FR_INVALID_NAME;\r
			i = 8; ni = 11;\r
			b <<= 2; continue;\r
		}\r
		if (c >= 0x80) {				/* Extended character? */\r
			b |= 3;						/* Eliminate NT flag */\r
#ifdef _EXCVT\r
			c = ExCvt[c - 0x80];		/* To upper extended characters (SBCS cfg) */\r
#else\r
#if !_DF1S\r
			return FR_INVALID_NAME;		/* Reject extended characters (ASCII cfg) */\r
#endif\r
#endif\r
		}\r
		if (IsDBCS1(c)) {				/* Check if it is a DBC 1st byte (always false on SBCS cfg) */\r
			d = (BYTE)p[si++];			/* Get 2nd byte */\r
			if (!IsDBCS2(d) || i >= ni - 1)	/* Reject invalid DBC */\r
				return FR_INVALID_NAME;\r
			sfn[i++] = c;\r
			sfn[i++] = d;\r
		} else {						/* Single byte code */\r
			if (chk_chr("\"*+,:;<=>\?[]|\x7F", c))	/* Reject illegal chrs for SFN */\r
				return FR_INVALID_NAME;\r
			if (IsUpper(c)) {			/* ASCII large capital? */\r
				b |= 2;\r
			} else {\r
				if (IsLower(c)) {		/* ASCII small capital? */\r
					b |= 1; c -= 0x20;\r
				}\r
			}\r
			sfn[i++] = c;\r
		}\r
	}\r
	*path = &p[si];						/* Return pointer to the next segment */\r
	c = (c <= ' ') ? NS_LAST : 0;		/* Set last segment flag if end of path */\r
\r
	if (!i) return FR_INVALID_NAME;		/* Reject nul string */\r
	if (sfn[0] == DDE) sfn[0] = NDDE;	/* When first character collides with DDE, replace it with 0x05 */\r
\r
	if (ni == 8) b <<= 2;\r
	if ((b & 0x03) == 0x01) c |= NS_EXT;	/* NT flag (Name extension has only small capital) */\r
	if ((b & 0x0C) == 0x04) c |= NS_BODY;	/* NT flag (Name body has only small capital) */\r
\r
	sfn[NSFLAG] = c;		/* Store NT flag, File name is created */\r
\r
	return FR_OK;\r
#endif\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Follow a file path                                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT follow_path (	/* FR_OK(0): successful, !=0: error code */\r
	DIR* dp,			/* Directory object to return last directory and found object */\r
	const TCHAR* path	/* Full-path string to find a file or directory */\r
)\r
{\r
	FRESULT res;\r
	BYTE *dir, ns;\r
\r
\r
#if _FS_RPATH\r
	if (*path == '/' || *path == '\\') {	/* There is a heading separator */\r
		path++;	dp->sclust = 0;				/* Strip it and start from the root directory */\r
	} else {								/* No heading separator */\r
		dp->sclust = dp->fs->cdir;			/* Start from the current directory */\r
	}\r
#else\r
	if (*path == '/' || *path == '\\')		/* Strip heading separator if exist */\r
		path++;\r
	dp->sclust = 0;							/* Always start from the root directory */\r
#endif\r
\r
	if ((UINT)*path < ' ') {				/* Null path name is the origin directory itself */\r
		res = dir_sdi(dp, 0);\r
		dp->dir = 0;\r
	} else {								/* Follow path */\r
		for (;;) {\r
			res = create_name(dp, &path);	/* Get a segment name of the path */\r
			if (res != FR_OK) break;\r
			res = dir_find(dp);				/* Find an object with the sagment name */\r
			ns = dp->fn[NSFLAG];\r
			if (res != FR_OK) {				/* Failed to find the object */\r
				if (res == FR_NO_FILE) {	/* Object is not found */\r
					if (_FS_RPATH && (ns & NS_DOT)) {	/* If dot entry is not exist, */\r
						dp->sclust = 0; dp->dir = 0;	/* it is the root directory and stay there */\r
						if (!(ns & NS_LAST)) continue;	/* Continue to follow if not last segment */\r
						res = FR_OK;					/* Ended at the root directroy. Function completed. */\r
					} else {							/* Could not find the object */\r
						if (!(ns & NS_LAST)) res = FR_NO_PATH;	/* Adjust error code if not last segment */\r
					}\r
				}\r
				break;\r
			}\r
			if (ns & NS_LAST) break;			/* Last segment matched. Function completed. */\r
			dir = dp->dir;						/* Follow the sub-directory */\r
			if (!(dir[DIR_Attr] & AM_DIR)) {	/* It is not a sub-directory and cannot follow */\r
				res = FR_NO_PATH; break;\r
			}\r
			dp->sclust = ld_clust(dp->fs, dir);\r
		}\r
	}\r
\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get logical drive number from path name                               */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
int get_ldnumber (		/* Returns logical drive number (-1:invalid drive) */\r
	const TCHAR** path	/* Pointer to pointer to the path name */\r
)\r
{\r
	const TCHAR *tp, *tt;\r
	UINT i;\r
	int vol = -1;\r
\r
\r
	if (*path) {	/* If the pointer is not a null */\r
		for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ;	/* Find ':' in the path */\r
		if (*tt == ':') {	/* If a ':' is exist in the path name */\r
			tp = *path;\r
			i = *tp++ - '0'; \r
			if (i < 10 && tp == tt) {	/* Is there a numeric drive id? */\r
				if (i < _VOLUMES) {	/* If a drive id is found, get the value and strip it */\r
					vol = (int)i;\r
					*path = ++tt;\r
				}\r
			} else {	/* No numeric drive number */\r
#if _STR_VOLUME_ID		/* Find string drive id */\r
				static const char* const str[] = {_VOLUME_STRS};\r
				const char *sp;\r
				char c;\r
				TCHAR tc;\r
\r
				i = 0; tt++;\r
				do {\r
					sp = str[i]; tp = *path;\r
					do {	/* Compare a string drive id with path name */\r
						c = *sp++; tc = *tp++;\r
						if (IsLower(tc)) tc -= 0x20;\r
					} while (c && (TCHAR)c == tc);\r
				} while ((c || tp != tt) && ++i < _VOLUMES);	/* Repeat for each id until pattern match */\r
				if (i < _VOLUMES) {	/* If a drive id is found, get the value and strip it */\r
					vol = (int)i;\r
					*path = tt;\r
				}\r
#endif\r
			}\r
			return vol;\r
		}\r
#if _FS_RPATH && _VOLUMES >= 2\r
		vol = CurrVol;	/* Current drive */\r
#else\r
		vol = 0;		/* Drive 0 */\r
#endif\r
	}\r
	return vol;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Load a sector and check if it is an FAT boot sector                   */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
BYTE check_fs (	/* 0:FAT boor sector, 1:Valid boor sector but not FAT, 2:Not a boot sector, 3:Disk error */\r
	FATFS* fs,	/* File system object */\r
	DWORD sect	/* Sector# (lba) to check if it is an FAT boot record or not */\r
)\r
{\r
	fs->wflag = 0; fs->winsect = 0xFFFFFFFF;	/* Invaidate window */\r
	if (move_window(fs, sect) != FR_OK)			/* Load boot record */\r
		return 3;\r
\r
	if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55)	/* Check boot record signature (always placed at offset 510 even if the sector size is >512) */\r
		return 2;\r
\r
	if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146)		/* Check "FAT" string */\r
		return 0;\r
	if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)	/* Check "FAT" string */\r
		return 0;\r
\r
	return 1;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Find logical drive and check if the volume is mounted                 */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT find_volume (	/* FR_OK(0): successful, !=0: any error occurred */\r
	FATFS** rfs,		/* Pointer to pointer to the found file system object */\r
	const TCHAR** path,	/* Pointer to pointer to the path name (drive number) */\r
	BYTE wmode			/* !=0: Check write protection for write access */\r
)\r
{\r
	BYTE fmt;\r
	int vol;\r
	DSTATUS stat;\r
	DWORD bsect, fasize, tsect, sysect, nclst, szbfat;\r
	WORD nrsv;\r
	FATFS *fs;\r
\r
\r
	/* Get logical drive number from the path name */\r
	*rfs = 0;\r
	vol = get_ldnumber(path);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
\r
	/* Check if the file system object is valid or not */\r
	fs = FatFs[vol];					/* Get pointer to the file system object */\r
	if (!fs) return FR_NOT_ENABLED;		/* Is the file system object available? */\r
\r
	ENTER_FF(fs);						/* Lock the volume */\r
	*rfs = fs;							/* Return pointer to the file system object */\r
\r
	if (fs->fs_type) {					/* If the volume has been mounted */\r
		stat = disk_status(fs->drv);\r
		if (!(stat & STA_NOINIT)) {		/* and the physical drive is kept initialized */\r
			if (!_FS_READONLY && wmode && (stat & STA_PROTECT))	/* Check write protection if needed */\r
				return FR_WRITE_PROTECTED;\r
			return FR_OK;				/* The file system object is valid */\r
		}\r
	}\r
\r
	/* The file system object is not valid. */\r
	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */\r
\r
	fs->fs_type = 0;					/* Clear the file system object */\r
	fs->drv = LD2PD(vol);				/* Bind the logical drive and a physical drive */\r
	stat = disk_initialize(fs->drv);	/* Initialize the physical drive */\r
	if (stat & STA_NOINIT)				/* Check if the initialization succeeded */\r
		return FR_NOT_READY;			/* Failed to initialize due to no medium or hard error */\r
	if (!_FS_READONLY && wmode && (stat & STA_PROTECT))	/* Check disk write protection if needed */\r
		return FR_WRITE_PROTECTED;\r
#if _MAX_SS != _MIN_SS						/* Get sector size (multiple sector size cfg only) */\r
	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK\r
		|| SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;\r
#endif\r
	/* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */\r
	bsect = 0;\r
	fmt = check_fs(fs, bsect);					/* Load sector 0 and check if it is an FAT boot sector as SFD */\r
	if (fmt == 1 || (!fmt && (LD2PT(vol)))) {	/* Not an FAT boot sector or forced partition number */\r
		UINT i;\r
		DWORD br[4];\r
\r
		for (i = 0; i < 4; i++) {			/* Get partition offset */\r
			BYTE *pt = fs->win+MBR_Table + i * SZ_PTE;\r
			br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;\r
		}\r
		i = LD2PT(vol);						/* Partition number: 0:auto, 1-4:forced */\r
		if (i) i--;\r
		do {								/* Find an FAT volume */\r
			bsect = br[i];\r
			fmt = bsect ? check_fs(fs, bsect) : 2;	/* Check the partition */\r
		} while (!LD2PT(vol) && fmt && ++i < 4);\r
	}\r
	if (fmt == 3) return FR_DISK_ERR;		/* An error occured in the disk I/O layer */\r
	if (fmt) return FR_NO_FILESYSTEM;		/* No FAT volume is found */\r
\r
	/* An FAT volume is found. Following code initializes the file system object */\r
\r
	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))		/* (BPB_BytsPerSec must be equal to the physical sector size) */\r
		return FR_NO_FILESYSTEM;\r
\r
	fasize = LD_WORD(fs->win+BPB_FATSz16);				/* Number of sectors per FAT */\r
	if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);\r
	fs->fsize = fasize;\r
\r
	fs->n_fats = fs->win[BPB_NumFATs];					/* Number of FAT copies */\r
	if (fs->n_fats != 1 && fs->n_fats != 2)				/* (Must be 1 or 2) */\r
		return FR_NO_FILESYSTEM;\r
	fasize *= fs->n_fats;								/* Number of sectors for FAT area */\r
\r
	fs->csize = fs->win[BPB_SecPerClus];				/* Number of sectors per cluster */\r
	if (!fs->csize || (fs->csize & (fs->csize - 1)))	/* (Must be power of 2) */\r
		return FR_NO_FILESYSTEM;\r
\r
	fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt);	/* Number of root directory entries */\r
	if (fs->n_rootdir % (SS(fs) / SZ_DIR))				/* (Must be sector aligned) */\r
		return FR_NO_FILESYSTEM;\r
\r
	tsect = LD_WORD(fs->win+BPB_TotSec16);				/* Number of sectors on the volume */\r
	if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);\r
\r
	nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt);				/* Number of reserved sectors */\r
	if (!nrsv) return FR_NO_FILESYSTEM;					/* (Must not be 0) */\r
\r
	/* Determine the FAT sub type */\r
	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR);	/* RSV+FAT+DIR */\r
	if (tsect < sysect) return FR_NO_FILESYSTEM;		/* (Invalid volume size) */\r
	nclst = (tsect - sysect) / fs->csize;				/* Number of clusters */\r
	if (!nclst) return FR_NO_FILESYSTEM;				/* (Invalid volume size) */\r
	fmt = FS_FAT12;\r
	if (nclst >= MIN_FAT16) fmt = FS_FAT16;\r
	if (nclst >= MIN_FAT32) fmt = FS_FAT32;\r
\r
	/* Boundaries and Limits */\r
	fs->n_fatent = nclst + 2;							/* Number of FAT entries */\r
	fs->volbase = bsect;								/* Volume start sector */\r
	fs->fatbase = bsect + nrsv; 						/* FAT start sector */\r
	fs->database = bsect + sysect;						/* Data start sector */\r
	if (fmt == FS_FAT32) {\r
		if (fs->n_rootdir) return FR_NO_FILESYSTEM;		/* (BPB_RootEntCnt must be 0) */\r
		fs->dirbase = LD_DWORD(fs->win+BPB_RootClus);	/* Root directory start cluster */\r
		szbfat = fs->n_fatent * 4;						/* (Needed FAT size) */\r
	} else {\r
		if (!fs->n_rootdir)	return FR_NO_FILESYSTEM;	/* (BPB_RootEntCnt must not be 0) */\r
		fs->dirbase = fs->fatbase + fasize;				/* Root directory start sector */\r
		szbfat = (fmt == FS_FAT16) ?					/* (Needed FAT size) */\r
			fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);\r
	}\r
	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs))	/* (BPB_FATSz must not be less than the size needed) */\r
		return FR_NO_FILESYSTEM;\r
\r
#if !_FS_READONLY\r
	/* Initialize cluster allocation information */\r
	fs->last_clust = fs->free_clust = 0xFFFFFFFF;\r
\r
	/* Get fsinfo if available */\r
	fs->fsi_flag = 0x80;\r
#if (_FS_NOFSINFO & 3) != 3\r
	if (fmt == FS_FAT32				/* Enable FSINFO only if FAT32 and BPB_FSInfo is 1 */\r
		&& LD_WORD(fs->win+BPB_FSInfo) == 1\r
		&& move_window(fs, bsect + 1) == FR_OK)\r
	{\r
		fs->fsi_flag = 0;\r
		if (LD_WORD(fs->win+BS_55AA) == 0xAA55	/* Load FSINFO data if available */\r
			&& LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252\r
			&& LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272)\r
		{\r
#if (_FS_NOFSINFO & 1) == 0\r
			fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);\r
#endif\r
#if (_FS_NOFSINFO & 2) == 0\r
			fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);\r
#endif\r
		}\r
	}\r
#endif\r
#endif\r
	fs->fs_type = fmt;	/* FAT sub-type */\r
	fs->id = ++Fsid;	/* File system mount ID */\r
#if _FS_RPATH\r
	fs->cdir = 0;		/* Set current directory to root */\r
#endif\r
#if _FS_LOCK			/* Clear file lock semaphores */\r
	clear_lock(fs);\r
#endif\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Check if the file/directory object is valid or not                    */\r
/*-----------------------------------------------------------------------*/\r
\r
static\r
FRESULT validate (	/* FR_OK(0): The object is valid, !=0: Invalid */\r
	void* obj		/* Pointer to the object FIL/DIR to check validity */\r
)\r
{\r
	FIL *fil = (FIL*)obj;	/* Assuming offset of .fs and .id in the FIL/DIR structure is identical */\r
\r
\r
	if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id)\r
		return FR_INVALID_OBJECT;\r
\r
	ENTER_FF(fil->fs);		/* Lock file system */\r
\r
	if (disk_status(fil->fs->drv) & STA_NOINIT)\r
		return FR_NOT_READY;\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Public Functions\r
\r
--------------------------------------------------------------------------*/\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Mount/Unmount a Logical Drive                                         */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_mount (\r
	FATFS* fs,			/* Pointer to the file system object (NULL:unmount)*/\r
	const TCHAR* path,	/* Logical drive number to be mounted/unmounted */\r
	BYTE opt			/* 0:Do not mount (delayed mount), 1:Mount immediately */\r
)\r
{\r
	FATFS *cfs;\r
	int vol;\r
	FRESULT res;\r
	const TCHAR *rp = path;\r
\r
\r
	vol = get_ldnumber(&rp);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
	cfs = FatFs[vol];					/* Pointer to fs object */\r
\r
	if (cfs) {\r
#if _FS_LOCK\r
		clear_lock(cfs);\r
#endif\r
#if _FS_REENTRANT						/* Discard sync object of the current volume */\r
		if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;\r
#endif\r
		cfs->fs_type = 0;				/* Clear old fs object */\r
	}\r
\r
	if (fs) {\r
		fs->fs_type = 0;				/* Clear new fs object */\r
#if _FS_REENTRANT						/* Create sync object for the new volume */\r
		if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;\r
#endif\r
	}\r
	FatFs[vol] = fs;					/* Register new fs object */\r
\r
	if (!fs || opt != 1) return FR_OK;	/* Do not mount now, it will be mounted later */\r
\r
	res = find_volume(&fs, &path, 0);	/* Force mounted the volume */\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Open or Create a File                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_open (\r
	FIL* fp,			/* Pointer to the blank file object */\r
	const TCHAR* path,	/* Pointer to the file name */\r
	BYTE mode			/* Access mode and file open mode flags */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	BYTE *dir;\r
	DEF_NAMEBUF;\r
\r
\r
	if (!fp) return FR_INVALID_OBJECT;\r
	fp->fs = 0;			/* Clear file object */\r
\r
	/* Get logical drive number */\r
#if !_FS_READONLY\r
	mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;\r
	res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));\r
#else\r
	mode &= FA_READ;\r
	res = find_volume(&dj.fs, &path, 0);\r
#endif\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		dir = dj.dir;\r
#if !_FS_READONLY	/* R/W configuration */\r
		if (res == FR_OK) {\r
			if (!dir)	/* Default directory itself */\r
				res = FR_INVALID_NAME;\r
#if _FS_LOCK\r
			else\r
				res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r
#endif\r
		}\r
		/* Create or Open a file */\r
		if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\r
			DWORD dw, cl;\r
\r
			if (res != FR_OK) {					/* No file, create new */\r
				if (res == FR_NO_FILE)			/* There is no file to open, create a new entry */\r
#if _FS_LOCK\r
					res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;\r
#else\r
					res = dir_register(&dj);\r
#endif\r
				mode |= FA_CREATE_ALWAYS;		/* File is created */\r
				dir = dj.dir;					/* New entry */\r
			}\r
			else {								/* Any object is already existing */\r
				if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) {	/* Cannot overwrite it (R/O or DIR) */\r
					res = FR_DENIED;\r
				} else {\r
					if (mode & FA_CREATE_NEW)	/* Cannot create as new file */\r
						res = FR_EXIST;\r
				}\r
			}\r
			if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) {	/* Truncate it if overwrite mode */\r
				dw = GET_FATTIME();				/* Created time */\r
				ST_DWORD(dir+DIR_CrtTime, dw);\r
				dir[DIR_Attr] = 0;				/* Reset attribute */\r
				ST_DWORD(dir+DIR_FileSize, 0);	/* size = 0 */\r
				cl = ld_clust(dj.fs, dir);		/* Get start cluster */\r
				st_clust(dir, 0);				/* cluster = 0 */\r
				dj.fs->wflag = 1;\r
				if (cl) {						/* Remove the cluster chain if exist */\r
					dw = dj.fs->winsect;\r
					res = remove_chain(dj.fs, cl);\r
					if (res == FR_OK) {\r
						dj.fs->last_clust = cl - 1;	/* Reuse the cluster hole */\r
						res = move_window(dj.fs, dw);\r
					}\r
				}\r
			}\r
		}\r
		else {	/* Open an existing file */\r
			if (res == FR_OK) {					/* Follow succeeded */\r
				if (dir[DIR_Attr] & AM_DIR) {	/* It is a directory */\r
					res = FR_NO_FILE;\r
				} else {\r
					if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */\r
						res = FR_DENIED;\r
				}\r
			}\r
		}\r
		if (res == FR_OK) {\r
			if (mode & FA_CREATE_ALWAYS)		/* Set file change flag if created or overwritten */\r
				mode |= FA__WRITTEN;\r
			fp->dir_sect = dj.fs->winsect;		/* Pointer to the directory entry */\r
			fp->dir_ptr = dir;\r
#if _FS_LOCK\r
			fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r
			if (!fp->lockid) res = FR_INT_ERR;\r
#endif\r
		}\r
\r
#else				/* R/O configuration */\r
		if (res == FR_OK) {					/* Follow succeeded */\r
			dir = dj.dir;\r
			if (!dir) {						/* Current directory itself */\r
				res = FR_INVALID_NAME;\r
			} else {\r
				if (dir[DIR_Attr] & AM_DIR)	/* It is a directory */\r
					res = FR_NO_FILE;\r
			}\r
		}\r
#endif\r
		FREE_BUF();\r
\r
		if (res == FR_OK) {\r
			fp->flag = mode;					/* File access mode */\r
			fp->err = 0;						/* Clear error flag */\r
			fp->sclust = ld_clust(dj.fs, dir);	/* File start cluster */\r
			fp->fsize = LD_DWORD(dir+DIR_FileSize);	/* File size */\r
			fp->fptr = 0;						/* File pointer */\r
			fp->dsect = 0;\r
#if _USE_FASTSEEK\r
			fp->cltbl = 0;						/* Normal seek mode */\r
#endif\r
			fp->fs = dj.fs;	 					/* Validate file object */\r
			fp->id = fp->fs->id;\r
		}\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read File                                                             */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_read (\r
	FIL* fp, 		/* Pointer to the file object */\r
	void* buff,		/* Pointer to data buffer */\r
	UINT btr,		/* Number of bytes to read */\r
	UINT* br		/* Pointer to number of bytes read */\r
)\r
{\r
	FRESULT res;\r
	DWORD clst, sect, remain;\r
	UINT rcnt, cc;\r
	BYTE csect, *rbuff = (BYTE*)buff;\r
\r
\r
	*br = 0;	/* Clear read byte counter */\r
\r
	res = validate(fp);							/* Check validity */\r
	if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
	if (fp->err)								/* Check error */\r
		LEAVE_FF(fp->fs, (FRESULT)fp->err);\r
	if (!(fp->flag & FA_READ)) 					/* Check access mode */\r
		LEAVE_FF(fp->fs, FR_DENIED);\r
	remain = fp->fsize - fp->fptr;\r
	if (btr > remain) btr = (UINT)remain;		/* Truncate btr by remaining bytes */\r
\r
	for ( ;  btr;								/* Repeat until all data read */\r
		rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {\r
		if ((fp->fptr % SS(fp->fs)) == 0) {		/* On the sector boundary? */\r
			csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */\r
			if (!csect) {						/* On the cluster boundary? */\r
				if (fp->fptr == 0) {			/* On the top of the file? */\r
					clst = fp->sclust;			/* Follow from the origin */\r
				} else {						/* Middle or end of the file */\r
#if _USE_FASTSEEK\r
					if (fp->cltbl)\r
						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */\r
					else\r
#endif\r
						clst = get_fat(fp->fs, fp->clust);	/* Follow cluster chain on the FAT */\r
				}\r
				if (clst < 2) ABORT(fp->fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
				fp->clust = clst;				/* Update current cluster */\r
			}\r
			sect = clust2sect(fp->fs, fp->clust);	/* Get current sector */\r
			if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
			sect += csect;\r
			cc = btr / SS(fp->fs);				/* When remaining bytes >= sector size, */\r
			if (cc) {							/* Read maximum contiguous sectors directly */\r
				if (csect + cc > fp->fs->csize)	/* Clip at cluster boundary */\r
					cc = fp->fs->csize - csect;\r
				if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)\r
					ABORT(fp->fs, FR_DISK_ERR);\r
#if !_FS_READONLY && _FS_MINIMIZE <= 2			/* Replace one of the read sectors with cached data if it contains a dirty sector */\r
#if _FS_TINY\r
				if (fp->fs->wflag && fp->fs->winsect - sect < cc)\r
					mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));\r
#else\r
				if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)\r
					mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));\r
#endif\r
#endif\r
				rcnt = SS(fp->fs) * cc;			/* Number of bytes transferred */\r
				continue;\r
			}\r
#if !_FS_TINY\r
			if (fp->dsect != sect) {			/* Load data sector if not in cache */\r
#if !_FS_READONLY\r
				if (fp->flag & FA__DIRTY) {		/* Write-back dirty sector cache */\r
					if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
						ABORT(fp->fs, FR_DISK_ERR);\r
					fp->flag &= ~FA__DIRTY;\r
				}\r
#endif\r
				if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)	/* Fill sector cache */\r
					ABORT(fp->fs, FR_DISK_ERR);\r
			}\r
#endif\r
			fp->dsect = sect;\r
		}\r
		rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));	/* Get partial sector data from sector buffer */\r
		if (rcnt > btr) rcnt = btr;\r
#if _FS_TINY\r
		if (move_window(fp->fs, fp->dsect) != FR_OK)		/* Move sector window */\r
			ABORT(fp->fs, FR_DISK_ERR);\r
		mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */\r
#else\r
		mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */\r
#endif\r
	}\r
\r
	LEAVE_FF(fp->fs, FR_OK);\r
}\r
\r
\r
\r
\r
#if !_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Write File                                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_write (\r
	FIL* fp,			/* Pointer to the file object */\r
	const void *buff,	/* Pointer to the data to be written */\r
	UINT btw,			/* Number of bytes to write */\r
	UINT* bw			/* Pointer to number of bytes written */\r
)\r
{\r
	FRESULT res;\r
	DWORD clst, sect;\r
	UINT wcnt, cc;\r
	const BYTE *wbuff = (const BYTE*)buff;\r
	BYTE csect;\r
\r
\r
	*bw = 0;	/* Clear write byte counter */\r
\r
	res = validate(fp);						/* Check validity */\r
	if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
	if (fp->err)							/* Check error */\r
		LEAVE_FF(fp->fs, (FRESULT)fp->err);\r
	if (!(fp->flag & FA_WRITE))				/* Check access mode */\r
		LEAVE_FF(fp->fs, FR_DENIED);\r
	if (fp->fptr + btw < fp->fptr) btw = 0;	/* File size cannot reach 4GB */\r
\r
	for ( ;  btw;							/* Repeat until all data written */\r
		wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {\r
		if ((fp->fptr % SS(fp->fs)) == 0) {	/* On the sector boundary? */\r
			csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */\r
			if (!csect) {					/* On the cluster boundary? */\r
				if (fp->fptr == 0) {		/* On the top of the file? */\r
					clst = fp->sclust;		/* Follow from the origin */\r
					if (clst == 0)			/* When no cluster is allocated, */\r
						clst = create_chain(fp->fs, 0);	/* Create a new cluster chain */\r
				} else {					/* Middle or end of the file */\r
#if _USE_FASTSEEK\r
					if (fp->cltbl)\r
						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */\r
					else\r
#endif\r
						clst = create_chain(fp->fs, fp->clust);	/* Follow or stretch cluster chain on the FAT */\r
				}\r
				if (clst == 0) break;		/* Could not allocate a new cluster (disk full) */\r
				if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
				fp->clust = clst;			/* Update current cluster */\r
				if (fp->sclust == 0) fp->sclust = clst;	/* Set start cluster if the first write */\r
			}\r
#if _FS_TINY\r
			if (fp->fs->winsect == fp->dsect && sync_window(fp->fs))	/* Write-back sector cache */\r
				ABORT(fp->fs, FR_DISK_ERR);\r
#else\r
			if (fp->flag & FA__DIRTY) {		/* Write-back sector cache */\r
				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
					ABORT(fp->fs, FR_DISK_ERR);\r
				fp->flag &= ~FA__DIRTY;\r
			}\r
#endif\r
			sect = clust2sect(fp->fs, fp->clust);	/* Get current sector */\r
			if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
			sect += csect;\r
			cc = btw / SS(fp->fs);			/* When remaining bytes >= sector size, */\r
			if (cc) {						/* Write maximum contiguous sectors directly */\r
				if (csect + cc > fp->fs->csize)	/* Clip at cluster boundary */\r
					cc = fp->fs->csize - csect;\r
				if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)\r
					ABORT(fp->fs, FR_DISK_ERR);\r
#if _FS_MINIMIZE <= 2\r
#if _FS_TINY\r
				if (fp->fs->winsect - sect < cc) {	/* Refill sector cache if it gets invalidated by the direct write */\r
					mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));\r
					fp->fs->wflag = 0;\r
				}\r
#else\r
				if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */\r
					mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));\r
					fp->flag &= ~FA__DIRTY;\r
				}\r
#endif\r
#endif\r
				wcnt = SS(fp->fs) * cc;		/* Number of bytes transferred */\r
				continue;\r
			}\r
#if _FS_TINY\r
			if (fp->fptr >= fp->fsize) {	/* Avoid silly cache filling at growing edge */\r
				if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);\r
				fp->fs->winsect = sect;\r
			}\r
#else\r
			if (fp->dsect != sect) {		/* Fill sector cache with file data */\r
				if (fp->fptr < fp->fsize &&\r
					disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)\r
						ABORT(fp->fs, FR_DISK_ERR);\r
			}\r
#endif\r
			fp->dsect = sect;\r
		}\r
		wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */\r
		if (wcnt > btw) wcnt = btw;\r
#if _FS_TINY\r
		if (move_window(fp->fs, fp->dsect) != FR_OK)	/* Move sector window */\r
			ABORT(fp->fs, FR_DISK_ERR);\r
		mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt);	/* Fit partial sector */\r
		fp->fs->wflag = 1;\r
#else\r
		mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt);	/* Fit partial sector */\r
		fp->flag |= FA__DIRTY;\r
#endif\r
	}\r
\r
	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr;	/* Update file size if needed */\r
	fp->flag |= FA__WRITTEN;						/* Set file change flag */\r
\r
	LEAVE_FF(fp->fs, FR_OK);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Synchronize the File                                                  */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_sync (\r
	FIL* fp		/* Pointer to the file object */\r
)\r
{\r
	FRESULT res;\r
	DWORD tm;\r
	BYTE *dir;\r
\r
\r
	res = validate(fp);					/* Check validity of the object */\r
	if (res == FR_OK) {\r
		if (fp->flag & FA__WRITTEN) {	/* Has the file been written? */\r
			/* Write-back dirty buffer */\r
#if !_FS_TINY\r
			if (fp->flag & FA__DIRTY) {\r
				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
					LEAVE_FF(fp->fs, FR_DISK_ERR);\r
				fp->flag &= ~FA__DIRTY;\r
			}\r
#endif\r
			/* Update the directory entry */\r
			res = move_window(fp->fs, fp->dir_sect);\r
			if (res == FR_OK) {\r
				dir = fp->dir_ptr;\r
				dir[DIR_Attr] |= AM_ARC;					/* Set archive bit */\r
				ST_DWORD(dir+DIR_FileSize, fp->fsize);		/* Update file size */\r
				st_clust(dir, fp->sclust);					/* Update start cluster */\r
				tm = GET_FATTIME();							/* Update updated time */\r
				ST_DWORD(dir+DIR_WrtTime, tm);\r
				ST_WORD(dir+DIR_LstAccDate, 0);\r
				fp->flag &= ~FA__WRITTEN;\r
				fp->fs->wflag = 1;\r
				res = sync_fs(fp->fs);\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(fp->fs, res);\r
}\r
\r
#endif /* !_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Close File                                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_close (\r
	FIL *fp		/* Pointer to the file object to be closed */\r
)\r
{\r
	FRESULT res;\r
\r
\r
#if !_FS_READONLY\r
	res = f_sync(fp);					/* Flush cached data */\r
	if (res == FR_OK)\r
#endif\r
	{\r
		res = validate(fp);				/* Lock volume */\r
		if (res == FR_OK) {\r
#if _FS_REENTRANT\r
			FATFS *fs = fp->fs;\r
#endif\r
#if _FS_LOCK\r
			res = dec_lock(fp->lockid);	/* Decrement file open counter */\r
			if (res == FR_OK)\r
#endif\r
				fp->fs = 0;				/* Invalidate file object */\r
#if _FS_REENTRANT\r
			unlock_fs(fs, FR_OK);		/* Unlock volume */\r
#endif\r
		}\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Change Current Directory or Current Drive, Get Current Directory      */\r
/*-----------------------------------------------------------------------*/\r
\r
#if _FS_RPATH >= 1\r
#if _VOLUMES >= 2\r
FRESULT f_chdrive (\r
	const TCHAR* path		/* Drive number */\r
)\r
{\r
	int vol;\r
\r
\r
	vol = get_ldnumber(&path);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
\r
	CurrVol = (BYTE)vol;\r
\r
	return FR_OK;\r
}\r
#endif\r
\r
\r
FRESULT f_chdir (\r
	const TCHAR* path	/* Pointer to the directory path */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 0);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);		/* Follow the path */\r
		FREE_BUF();\r
		if (res == FR_OK) {					/* Follow completed */\r
			if (!dj.dir) {\r
				dj.fs->cdir = dj.sclust;	/* Start directory itself */\r
			} else {\r
				if (dj.dir[DIR_Attr] & AM_DIR)	/* Reached to the directory */\r
					dj.fs->cdir = ld_clust(dj.fs, dj.dir);\r
				else\r
					res = FR_NO_PATH;		/* Reached but a file */\r
			}\r
		}\r
		if (res == FR_NO_FILE) res = FR_NO_PATH;\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
#if _FS_RPATH >= 2\r
FRESULT f_getcwd (\r
	TCHAR* buff,	/* Pointer to the directory path */\r
	UINT len		/* Size of path */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	UINT i, n;\r
	DWORD ccl;\r
	TCHAR *tp;\r
	FILINFO fno;\r
	DEF_NAMEBUF;\r
\r
\r
	*buff = 0;\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, (const TCHAR**)&buff, 0);	/* Get current volume */\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		i = len;			/* Bottom of buffer (directory stack base) */\r
		dj.sclust = dj.fs->cdir;			/* Start to follow upper directory from current directory */\r
		while ((ccl = dj.sclust) != 0) {	/* Repeat while current directory is a sub-directory */\r
			res = dir_sdi(&dj, 1);			/* Get parent directory */\r
			if (res != FR_OK) break;\r
			res = dir_read(&dj, 0);\r
			if (res != FR_OK) break;\r
			dj.sclust = ld_clust(dj.fs, dj.dir);	/* Goto parent directory */\r
			res = dir_sdi(&dj, 0);\r
			if (res != FR_OK) break;\r
			do {							/* Find the entry links to the child directory */\r
				res = dir_read(&dj, 0);\r
				if (res != FR_OK) break;\r
				if (ccl == ld_clust(dj.fs, dj.dir)) break;	/* Found the entry */\r
				res = dir_next(&dj, 0);	\r
			} while (res == FR_OK);\r
			if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */\r
			if (res != FR_OK) break;\r
#if _USE_LFN\r
			fno.lfname = buff;\r
			fno.lfsize = i;\r
#endif\r
			get_fileinfo(&dj, &fno);		/* Get the directory name and push it to the buffer */\r
			tp = fno.fname;\r
#if _USE_LFN\r
			if (*buff) tp = buff;\r
#endif\r
			for (n = 0; tp[n]; n++) ;\r
			if (i < n + 3) {\r
				res = FR_NOT_ENOUGH_CORE; break;\r
			}\r
			while (n) buff[--i] = tp[--n];\r
			buff[--i] = '/';\r
		}\r
		tp = buff;\r
		if (res == FR_OK) {\r
#if _VOLUMES >= 2\r
			*tp++ = '0' + CurrVol;			/* Put drive number */\r
			*tp++ = ':';\r
#endif\r
			if (i == len) {					/* Root-directory */\r
				*tp++ = '/';\r
			} else {						/* Sub-directroy */\r
				do		/* Add stacked path str */\r
					*tp++ = buff[i++];\r
				while (i < len);\r
			}\r
		}\r
		*tp = 0;\r
		FREE_BUF();\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
#endif /* _FS_RPATH >= 2 */\r
#endif /* _FS_RPATH >= 1 */\r
\r
\r
\r
#if _FS_MINIMIZE <= 2\r
/*-----------------------------------------------------------------------*/\r
/* Seek File R/W Pointer                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_lseek (\r
	FIL* fp,		/* Pointer to the file object */\r
	DWORD ofs		/* File pointer from top of file */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	res = validate(fp);					/* Check validity of the object */\r
	if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
	if (fp->err)						/* Check error */\r
		LEAVE_FF(fp->fs, (FRESULT)fp->err);\r
\r
#if _USE_FASTSEEK\r
	if (fp->cltbl) {	/* Fast seek */\r
		DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;\r
\r
		if (ofs == CREATE_LINKMAP) {	/* Create CLMT */\r
			tbl = fp->cltbl;\r
			tlen = *tbl++; ulen = 2;	/* Given table size and required table size */\r
			cl = fp->sclust;			/* Top of the chain */\r
			if (cl) {\r
				do {\r
					/* Get a fragment */\r
					tcl = cl; ncl = 0; ulen += 2;	/* Top, length and used items */\r
					do {\r
						pcl = cl; ncl++;\r
						cl = get_fat(fp->fs, cl);\r
						if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);\r
						if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
					} while (cl == pcl + 1);\r
					if (ulen <= tlen) {		/* Store the length and top of the fragment */\r
						*tbl++ = ncl; *tbl++ = tcl;\r
					}\r
				} while (cl < fp->fs->n_fatent);	/* Repeat until end of chain */\r
			}\r
			*fp->cltbl = ulen;	/* Number of items used */\r
			if (ulen <= tlen)\r
				*tbl = 0;		/* Terminate table */\r
			else\r
				res = FR_NOT_ENOUGH_CORE;	/* Given table size is smaller than required */\r
\r
		} else {						/* Fast seek */\r
			if (ofs > fp->fsize)		/* Clip offset at the file size */\r
				ofs = fp->fsize;\r
			fp->fptr = ofs;				/* Set file pointer */\r
			if (ofs) {\r
				fp->clust = clmt_clust(fp, ofs - 1);\r
				dsc = clust2sect(fp->fs, fp->clust);\r
				if (!dsc) ABORT(fp->fs, FR_INT_ERR);\r
				dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);\r
				if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {	/* Refill sector cache if needed */\r
#if !_FS_TINY\r
#if !_FS_READONLY\r
					if (fp->flag & FA__DIRTY) {		/* Write-back dirty sector cache */\r
						if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
							ABORT(fp->fs, FR_DISK_ERR);\r
						fp->flag &= ~FA__DIRTY;\r
					}\r
#endif\r
					if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)	/* Load current sector */\r
						ABORT(fp->fs, FR_DISK_ERR);\r
#endif\r
					fp->dsect = dsc;\r
				}\r
			}\r
		}\r
	} else\r
#endif\r
\r
	/* Normal Seek */\r
	{\r
		DWORD clst, bcs, nsect, ifptr;\r
\r
		if (ofs > fp->fsize					/* In read-only mode, clip offset with the file size */\r
#if !_FS_READONLY\r
			 && !(fp->flag & FA_WRITE)\r
#endif\r
			) ofs = fp->fsize;\r
\r
		ifptr = fp->fptr;\r
		fp->fptr = nsect = 0;\r
		if (ofs) {\r
			bcs = (DWORD)fp->fs->csize * SS(fp->fs);	/* Cluster size (byte) */\r
			if (ifptr > 0 &&\r
				(ofs - 1) / bcs >= (ifptr - 1) / bcs) {	/* When seek to same or following cluster, */\r
				fp->fptr = (ifptr - 1) & ~(bcs - 1);	/* start from the current cluster */\r
				ofs -= fp->fptr;\r
				clst = fp->clust;\r
			} else {									/* When seek to back cluster, */\r
				clst = fp->sclust;						/* start from the first cluster */\r
#if !_FS_READONLY\r
				if (clst == 0) {						/* If no cluster chain, create a new chain */\r
					clst = create_chain(fp->fs, 0);\r
					if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
					if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
					fp->sclust = clst;\r
				}\r
#endif\r
				fp->clust = clst;\r
			}\r
			if (clst != 0) {\r
				while (ofs > bcs) {						/* Cluster following loop */\r
#if !_FS_READONLY\r
					if (fp->flag & FA_WRITE) {			/* Check if in write mode or not */\r
						clst = create_chain(fp->fs, clst);	/* Force stretch if in write mode */\r
						if (clst == 0) {				/* When disk gets full, clip file size */\r
							ofs = bcs; break;\r
						}\r
					} else\r
#endif\r
						clst = get_fat(fp->fs, clst);	/* Follow cluster chain if not in write mode */\r
					if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
					if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);\r
					fp->clust = clst;\r
					fp->fptr += bcs;\r
					ofs -= bcs;\r
				}\r
				fp->fptr += ofs;\r
				if (ofs % SS(fp->fs)) {\r
					nsect = clust2sect(fp->fs, clst);	/* Current sector */\r
					if (!nsect) ABORT(fp->fs, FR_INT_ERR);\r
					nsect += ofs / SS(fp->fs);\r
				}\r
			}\r
		}\r
		if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {	/* Fill sector cache if needed */\r
#if !_FS_TINY\r
#if !_FS_READONLY\r
			if (fp->flag & FA__DIRTY) {			/* Write-back dirty sector cache */\r
				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
					ABORT(fp->fs, FR_DISK_ERR);\r
				fp->flag &= ~FA__DIRTY;\r
			}\r
#endif\r
			if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)	/* Fill sector cache */\r
				ABORT(fp->fs, FR_DISK_ERR);\r
#endif\r
			fp->dsect = nsect;\r
		}\r
#if !_FS_READONLY\r
		if (fp->fptr > fp->fsize) {			/* Set file change flag if the file size is extended */\r
			fp->fsize = fp->fptr;\r
			fp->flag |= FA__WRITTEN;\r
		}\r
#endif\r
	}\r
\r
	LEAVE_FF(fp->fs, res);\r
}\r
\r
\r
\r
#if _FS_MINIMIZE <= 1\r
/*-----------------------------------------------------------------------*/\r
/* Create a Directory Object                                             */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_opendir (\r
	DIR* dp,			/* Pointer to directory object to create */\r
	const TCHAR* path	/* Pointer to the directory path */\r
)\r
{\r
	FRESULT res;\r
	FATFS* fs;\r
	DEF_NAMEBUF;\r
\r
\r
	if (!dp) return FR_INVALID_OBJECT;\r
\r
	/* Get logical drive number */\r
	res = find_volume(&fs, &path, 0);\r
	if (res == FR_OK) {\r
		dp->fs = fs;\r
		INIT_BUF(*dp);\r
		res = follow_path(dp, path);			/* Follow the path to the directory */\r
		FREE_BUF();\r
		if (res == FR_OK) {						/* Follow completed */\r
			if (dp->dir) {						/* It is not the origin directory itself */\r
				if (dp->dir[DIR_Attr] & AM_DIR)	/* The object is a sub directory */\r
					dp->sclust = ld_clust(fs, dp->dir);\r
				else							/* The object is a file */\r
					res = FR_NO_PATH;\r
			}\r
			if (res == FR_OK) {\r
				dp->id = fs->id;\r
				res = dir_sdi(dp, 0);			/* Rewind directory */\r
#if _FS_LOCK\r
				if (res == FR_OK) {\r
					if (dp->sclust) {\r
						dp->lockid = inc_lock(dp, 0);	/* Lock the sub directory */\r
						if (!dp->lockid)\r
							res = FR_TOO_MANY_OPEN_FILES;\r
					} else {\r
						dp->lockid = 0;	/* Root directory need not to be locked */\r
					}\r
				}\r
#endif\r
			}\r
		}\r
		if (res == FR_NO_FILE) res = FR_NO_PATH;\r
	}\r
	if (res != FR_OK) dp->fs = 0;		/* Invalidate the directory object if function faild */\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Close Directory                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_closedir (\r
	DIR *dp		/* Pointer to the directory object to be closed */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	res = validate(dp);\r
	if (res == FR_OK) {\r
#if _FS_REENTRANT\r
		FATFS *fs = dp->fs;\r
#endif\r
#if _FS_LOCK\r
		if (dp->lockid)				/* Decrement sub-directory open counter */\r
			res = dec_lock(dp->lockid);\r
		if (res == FR_OK)\r
#endif\r
			dp->fs = 0;				/* Invalidate directory object */\r
#if _FS_REENTRANT\r
		unlock_fs(fs, FR_OK);		/* Unlock volume */\r
#endif\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read Directory Entries in Sequence                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_readdir (\r
	DIR* dp,			/* Pointer to the open directory object */\r
	FILINFO* fno		/* Pointer to file information to return */\r
)\r
{\r
	FRESULT res;\r
	DEF_NAMEBUF;\r
\r
\r
	res = validate(dp);						/* Check validity of the object */\r
	if (res == FR_OK) {\r
		if (!fno) {\r
			res = dir_sdi(dp, 0);			/* Rewind the directory object */\r
		} else {\r
			INIT_BUF(*dp);\r
			res = dir_read(dp, 0);			/* Read an item */\r
			if (res == FR_NO_FILE) {		/* Reached end of directory */\r
				dp->sect = 0;\r
				res = FR_OK;\r
			}\r
			if (res == FR_OK) {				/* A valid entry is found */\r
				get_fileinfo(dp, fno);		/* Get the object information */\r
				res = dir_next(dp, 0);		/* Increment index for next */\r
				if (res == FR_NO_FILE) {\r
					dp->sect = 0;\r
					res = FR_OK;\r
				}\r
			}\r
			FREE_BUF();\r
		}\r
	}\r
\r
	LEAVE_FF(dp->fs, res);\r
}\r
\r
\r
\r
#if _FS_MINIMIZE == 0\r
/*-----------------------------------------------------------------------*/\r
/* Get File Status                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_stat (\r
	const TCHAR* path,	/* Pointer to the file path */\r
	FILINFO* fno		/* Pointer to file information to return */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 0);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		if (res == FR_OK) {				/* Follow completed */\r
			if (dj.dir) {		/* Found an object */\r
				if (fno) get_fileinfo(&dj, fno);\r
			} else {			/* It is root directory */\r
				res = FR_INVALID_NAME;\r
			}\r
		}\r
		FREE_BUF();\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
#if !_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Get Number of Free Clusters                                           */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_getfree (\r
	const TCHAR* path,	/* Path name of the logical drive number */\r
	DWORD* nclst,		/* Pointer to a variable to return number of free clusters */\r
	FATFS** fatfs		/* Pointer to return pointer to corresponding file system object */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD n, clst, sect, stat;\r
	UINT i;\r
	BYTE fat, *p;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(fatfs, &path, 0);\r
	fs = *fatfs;\r
	if (res == FR_OK) {\r
		/* If free_clust is valid, return it without full cluster scan */\r
		if (fs->free_clust <= fs->n_fatent - 2) {\r
			*nclst = fs->free_clust;\r
		} else {\r
			/* Get number of free clusters */\r
			fat = fs->fs_type;\r
			n = 0;\r
			if (fat == FS_FAT12) {\r
				clst = 2;\r
				do {\r
					stat = get_fat(fs, clst);\r
					if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }\r
					if (stat == 1) { res = FR_INT_ERR; break; }\r
					if (stat == 0) n++;\r
				} while (++clst < fs->n_fatent);\r
			} else {\r
				clst = fs->n_fatent;\r
				sect = fs->fatbase;\r
				i = 0; p = 0;\r
				do {\r
					if (!i) {\r
						res = move_window(fs, sect++);\r
						if (res != FR_OK) break;\r
						p = fs->win;\r
						i = SS(fs);\r
					}\r
					if (fat == FS_FAT16) {\r
						if (LD_WORD(p) == 0) n++;\r
						p += 2; i -= 2;\r
					} else {\r
						if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;\r
						p += 4; i -= 4;\r
					}\r
				} while (--clst);\r
			}\r
			fs->free_clust = n;\r
			fs->fsi_flag |= 1;\r
			*nclst = n;\r
		}\r
	}\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Truncate File                                                         */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_truncate (\r
	FIL* fp		/* Pointer to the file object */\r
)\r
{\r
	FRESULT res;\r
	DWORD ncl;\r
\r
\r
	res = validate(fp);						/* Check validity of the object */\r
	if (res == FR_OK) {\r
		if (fp->err) {						/* Check error */\r
			res = (FRESULT)fp->err;\r
		} else {\r
			if (!(fp->flag & FA_WRITE))		/* Check access mode */\r
				res = FR_DENIED;\r
		}\r
	}\r
	if (res == FR_OK) {\r
		if (fp->fsize > fp->fptr) {\r
			fp->fsize = fp->fptr;	/* Set file size to current R/W point */\r
			fp->flag |= FA__WRITTEN;\r
			if (fp->fptr == 0) {	/* When set file size to zero, remove entire cluster chain */\r
				res = remove_chain(fp->fs, fp->sclust);\r
				fp->sclust = 0;\r
			} else {				/* When truncate a part of the file, remove remaining clusters */\r
				ncl = get_fat(fp->fs, fp->clust);\r
				res = FR_OK;\r
				if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
				if (ncl == 1) res = FR_INT_ERR;\r
				if (res == FR_OK && ncl < fp->fs->n_fatent) {\r
					res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);\r
					if (res == FR_OK) res = remove_chain(fp->fs, ncl);\r
				}\r
			}\r
#if !_FS_TINY\r
			if (res == FR_OK && (fp->flag & FA__DIRTY)) {\r
				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)\r
					res = FR_DISK_ERR;\r
				else\r
					fp->flag &= ~FA__DIRTY;\r
			}\r
#endif\r
		}\r
		if (res != FR_OK) fp->err = (FRESULT)res;\r
	}\r
\r
	LEAVE_FF(fp->fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Delete a File or Directory                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_unlink (\r
	const TCHAR* path		/* Pointer to the file or directory path */\r
)\r
{\r
	FRESULT res;\r
	DIR dj, sdj;\r
	BYTE *dir;\r
	DWORD dclst = 0;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 1);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);		/* Follow the file path */\r
		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))\r
			res = FR_INVALID_NAME;			/* Cannot remove dot entry */\r
#if _FS_LOCK\r
		if (res == FR_OK) res = chk_lock(&dj, 2);	/* Cannot remove open object */\r
#endif\r
		if (res == FR_OK) {					/* The object is accessible */\r
			dir = dj.dir;\r
			if (!dir) {\r
				res = FR_INVALID_NAME;		/* Cannot remove the origin directory */\r
			} else {\r
				if (dir[DIR_Attr] & AM_RDO)\r
					res = FR_DENIED;		/* Cannot remove R/O object */\r
			}\r
			if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) {	/* Is it a sub-dir? */\r
				dclst = ld_clust(dj.fs, dir);\r
				if (!dclst) {\r
					res = FR_INT_ERR;\r
				} else {					/* Make sure the sub-directory is empty */\r
					mem_cpy(&sdj, &dj, sizeof (DIR));\r
					sdj.sclust = dclst;\r
					res = dir_sdi(&sdj, 2);		/* Exclude dot entries */\r
					if (res == FR_OK) {\r
						res = dir_read(&sdj, 0);	/* Read an item */\r
						if (res == FR_OK		/* Not empty directory */\r
#if _FS_RPATH\r
						|| dclst == dj.fs->cdir	/* or current directory */\r
#endif\r
						) res = FR_DENIED;\r
						if (res == FR_NO_FILE) res = FR_OK;	/* It is empty */\r
					}\r
				}\r
			}\r
			if (res == FR_OK) {\r
				res = dir_remove(&dj);		/* Remove the directory entry */\r
				if (res == FR_OK && dclst)	/* Remove the cluster chain if exist */\r
					res = remove_chain(dj.fs, dclst);\r
				if (res == FR_OK) res = sync_fs(dj.fs);\r
			}\r
		}\r
		FREE_BUF();\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Create a Directory                                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_mkdir (\r
	const TCHAR* path		/* Pointer to the directory path */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	BYTE *dir, n;\r
	DWORD dsc, dcl, pcl, tm = GET_FATTIME();\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 1);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);			/* Follow the file path */\r
		if (res == FR_OK) res = FR_EXIST;		/* Any object with same name is already existing */\r
		if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))\r
			res = FR_INVALID_NAME;\r
		if (res == FR_NO_FILE) {				/* Can create a new directory */\r
			dcl = create_chain(dj.fs, 0);		/* Allocate a cluster for the new directory table */\r
			res = FR_OK;\r
			if (dcl == 0) res = FR_DENIED;		/* No space to allocate a new cluster */\r
			if (dcl == 1) res = FR_INT_ERR;\r
			if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
			if (res == FR_OK)					/* Flush FAT */\r
				res = sync_window(dj.fs);\r
			if (res == FR_OK) {					/* Initialize the new directory table */\r
				dsc = clust2sect(dj.fs, dcl);\r
				dir = dj.fs->win;\r
				mem_set(dir, 0, SS(dj.fs));\r
				mem_set(dir+DIR_Name, ' ', 11);	/* Create "." entry */\r
				dir[DIR_Name] = '.';\r
				dir[DIR_Attr] = AM_DIR;\r
				ST_DWORD(dir+DIR_WrtTime, tm);\r
				st_clust(dir, dcl);\r
				mem_cpy(dir+SZ_DIR, dir, SZ_DIR); 	/* Create ".." entry */\r
				dir[SZ_DIR+1] = '.'; pcl = dj.sclust;\r
				if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)\r
					pcl = 0;\r
				st_clust(dir+SZ_DIR, pcl);\r
				for (n = dj.fs->csize; n; n--) {	/* Write dot entries and clear following sectors */\r
					dj.fs->winsect = dsc++;\r
					dj.fs->wflag = 1;\r
					res = sync_window(dj.fs);\r
					if (res != FR_OK) break;\r
					mem_set(dir, 0, SS(dj.fs));\r
				}\r
			}\r
			if (res == FR_OK) res = dir_register(&dj);	/* Register the object to the directoy */\r
			if (res != FR_OK) {\r
				remove_chain(dj.fs, dcl);			/* Could not register, remove cluster chain */\r
			} else {\r
				dir = dj.dir;\r
				dir[DIR_Attr] = AM_DIR;				/* Attribute */\r
				ST_DWORD(dir+DIR_WrtTime, tm);		/* Created time */\r
				st_clust(dir, dcl);					/* Table start cluster */\r
				dj.fs->wflag = 1;\r
				res = sync_fs(dj.fs);\r
			}\r
		}\r
		FREE_BUF();\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Change Attribute                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_chmod (\r
	const TCHAR* path,	/* Pointer to the file path */\r
	BYTE value,			/* Attribute bits */\r
	BYTE mask			/* Attribute mask to change */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	BYTE *dir;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 1);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);		/* Follow the file path */\r
		FREE_BUF();\r
		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))\r
			res = FR_INVALID_NAME;\r
		if (res == FR_OK) {\r
			dir = dj.dir;\r
			if (!dir) {						/* Is it a root directory? */\r
				res = FR_INVALID_NAME;\r
			} else {						/* File or sub directory */\r
				mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;	/* Valid attribute mask */\r
				dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask);	/* Apply attribute change */\r
				dj.fs->wflag = 1;\r
				res = sync_fs(dj.fs);\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Rename File/Directory                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_rename (\r
	const TCHAR* path_old,	/* Pointer to the object to be renamed */\r
	const TCHAR* path_new	/* Pointer to the new name */\r
)\r
{\r
	FRESULT res;\r
	DIR djo, djn;\r
	BYTE buf[21], *dir;\r
	DWORD dw;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number of the source object */\r
	res = find_volume(&djo.fs, &path_old, 1);\r
	if (res == FR_OK) {\r
		djn.fs = djo.fs;\r
		INIT_BUF(djo);\r
		res = follow_path(&djo, path_old);		/* Check old object */\r
		if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))\r
			res = FR_INVALID_NAME;\r
#if _FS_LOCK\r
		if (res == FR_OK) res = chk_lock(&djo, 2);\r
#endif\r
		if (res == FR_OK) {						/* Old object is found */\r
			if (!djo.dir) {						/* Is root dir? */\r
				res = FR_NO_FILE;\r
			} else {\r
				mem_cpy(buf, djo.dir+DIR_Attr, 21);		/* Save the object information except name */\r
				mem_cpy(&djn, &djo, sizeof (DIR));		/* Duplicate the directory object */\r
				if (get_ldnumber(&path_new) >= 0)		/* Snip drive number off and ignore it */\r
					res = follow_path(&djn, path_new);	/* and make sure if new object name is not conflicting */\r
				else\r
					res = FR_INVALID_DRIVE;\r
				if (res == FR_OK) res = FR_EXIST;		/* The new object name is already existing */\r
				if (res == FR_NO_FILE) { 				/* It is a valid path and no name collision */\r
/* Start of critical section that any interruption can cause a cross-link */\r
					res = dir_register(&djn);			/* Register the new entry */\r
					if (res == FR_OK) {\r
						dir = djn.dir;					/* Copy object information except name */\r
						mem_cpy(dir+13, buf+2, 19);\r
						dir[DIR_Attr] = buf[0] | AM_ARC;\r
						djo.fs->wflag = 1;\r
						if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) {	/* Update .. entry in the directory if needed */\r
							dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));\r
							if (!dw) {\r
								res = FR_INT_ERR;\r
							} else {\r
								res = move_window(djo.fs, dw);\r
								dir = djo.fs->win+SZ_DIR;	/* .. entry */\r
								if (res == FR_OK && dir[1] == '.') {\r
									st_clust(dir, djn.sclust);\r
									djo.fs->wflag = 1;\r
								}\r
							}\r
						}\r
						if (res == FR_OK) {\r
							res = dir_remove(&djo);		/* Remove old entry */\r
							if (res == FR_OK)\r
								res = sync_fs(djo.fs);\r
						}\r
					}\r
/* End of critical section */\r
				}\r
			}\r
		}\r
		FREE_BUF();\r
	}\r
\r
	LEAVE_FF(djo.fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Change Timestamp                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_utime (\r
	const TCHAR* path,	/* Pointer to the file/directory name */\r
	const FILINFO* fno	/* Pointer to the time stamp to be set */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	BYTE *dir;\r
	DEF_NAMEBUF;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 1);\r
	if (res == FR_OK) {\r
		INIT_BUF(dj);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		FREE_BUF();\r
		if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))\r
			res = FR_INVALID_NAME;\r
		if (res == FR_OK) {\r
			dir = dj.dir;\r
			if (!dir) {					/* Root directory */\r
				res = FR_INVALID_NAME;\r
			} else {					/* File or sub-directory */\r
				ST_WORD(dir+DIR_WrtTime, fno->ftime);\r
				ST_WORD(dir+DIR_WrtDate, fno->fdate);\r
				dj.fs->wflag = 1;\r
				res = sync_fs(dj.fs);\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
#endif /* !_FS_READONLY */\r
#endif /* _FS_MINIMIZE == 0 */\r
#endif /* _FS_MINIMIZE <= 1 */\r
#endif /* _FS_MINIMIZE <= 2 */\r
\r
\r
\r
#if _USE_LABEL\r
/*-----------------------------------------------------------------------*/\r
/* Get volume label                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_getlabel (\r
	const TCHAR* path,	/* Path name of the logical drive number */\r
	TCHAR* label,		/* Pointer to a buffer to return the volume label */\r
	DWORD* vsn			/* Pointer to a variable to return the volume serial number */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	UINT i, j;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &path, 0);\r
\r
	/* Get volume label */\r
	if (res == FR_OK && label) {\r
		dj.sclust = 0;					/* Open root directory */\r
		res = dir_sdi(&dj, 0);\r
		if (res == FR_OK) {\r
			res = dir_read(&dj, 1);		/* Get an entry with AM_VOL */\r
			if (res == FR_OK) {			/* A volume label is exist */\r
#if _USE_LFN && _LFN_UNICODE\r
				WCHAR w;\r
				i = j = 0;\r
				do {\r
					w = (i < 11) ? dj.dir[i++] : ' ';\r
					if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))\r
						w = w << 8 | dj.dir[i++];\r
					label[j++] = ff_convert(w, 1);	/* OEM -> Unicode */\r
				} while (j < 11);\r
#else\r
				mem_cpy(label, dj.dir, 11);\r
#endif\r
				j = 11;\r
				do {\r
					label[j] = 0;\r
					if (!j) break;\r
				} while (label[--j] == ' ');\r
			}\r
			if (res == FR_NO_FILE) {	/* No label, return nul string */\r
				label[0] = 0;\r
				res = FR_OK;\r
			}\r
		}\r
	}\r
\r
	/* Get volume serial number */\r
	if (res == FR_OK && vsn) {\r
		res = move_window(dj.fs, dj.fs->volbase);\r
		if (res == FR_OK) {\r
			i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;\r
			*vsn = LD_DWORD(&dj.fs->win[i]);\r
		}\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
\r
\r
#if !_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Set volume label                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_setlabel (\r
	const TCHAR* label	/* Pointer to the volume label to set */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	BYTE vn[11];\r
	UINT i, j, sl;\r
	WCHAR w;\r
	DWORD tm;\r
\r
\r
	/* Get logical drive number */\r
	res = find_volume(&dj.fs, &label, 1);\r
	if (res) LEAVE_FF(dj.fs, res);\r
\r
	/* Create a volume label in directory form */\r
	vn[0] = 0;\r
	for (sl = 0; label[sl]; sl++) ;				/* Get name length */\r
	for ( ; sl && label[sl-1] == ' '; sl--) ;	/* Remove trailing spaces */\r
	if (sl) {	/* Create volume label in directory form */\r
		i = j = 0;\r
		do {\r
#if _USE_LFN && _LFN_UNICODE\r
			w = ff_convert(ff_wtoupper(label[i++]), 0);\r
#else\r
			w = (BYTE)label[i++];\r
			if (IsDBCS1(w))\r
				w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;\r
#if _USE_LFN\r
			w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);\r
#else\r
			if (IsLower(w)) w -= 0x20;			/* To upper ASCII characters */\r
#ifdef _EXCVT\r
			if (w >= 0x80) w = ExCvt[w - 0x80];	/* To upper extended characters (SBCS cfg) */\r
#else\r
			if (!_DF1S && w >= 0x80) w = 0;		/* Reject extended characters (ASCII cfg) */\r
#endif\r
#endif\r
#endif\r
			if (!w || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */\r
				LEAVE_FF(dj.fs, FR_INVALID_NAME);\r
			if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);\r
			vn[j++] = (BYTE)w;\r
		} while (i < sl);\r
		while (j < 11) vn[j++] = ' ';\r
	}\r
\r
	/* Set volume label */\r
	dj.sclust = 0;					/* Open root directory */\r
	res = dir_sdi(&dj, 0);\r
	if (res == FR_OK) {\r
		res = dir_read(&dj, 1);		/* Get an entry with AM_VOL */\r
		if (res == FR_OK) {			/* A volume label is found */\r
			if (vn[0]) {\r
				mem_cpy(dj.dir, vn, 11);	/* Change the volume label name */\r
				tm = GET_FATTIME();\r
				ST_DWORD(dj.dir+DIR_WrtTime, tm);\r
			} else {\r
				dj.dir[0] = DDE;			/* Remove the volume label */\r
			}\r
			dj.fs->wflag = 1;\r
			res = sync_fs(dj.fs);\r
		} else {					/* No volume label is found or error */\r
			if (res == FR_NO_FILE) {\r
				res = FR_OK;\r
				if (vn[0]) {				/* Create volume label as new */\r
					res = dir_alloc(&dj, 1);	/* Allocate an entry for volume label */\r
					if (res == FR_OK) {\r
						mem_set(dj.dir, 0, SZ_DIR);	/* Set volume label */\r
						mem_cpy(dj.dir, vn, 11);\r
						dj.dir[DIR_Attr] = AM_VOL;\r
						tm = GET_FATTIME();\r
						ST_DWORD(dj.dir+DIR_WrtTime, tm);\r
						dj.fs->wflag = 1;\r
						res = sync_fs(dj.fs);\r
					}\r
				}\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(dj.fs, res);\r
}\r
\r
#endif /* !_FS_READONLY */\r
#endif /* _USE_LABEL */\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Forward data to the stream directly (available on only tiny cfg)      */\r
/*-----------------------------------------------------------------------*/\r
#if _USE_FORWARD && _FS_TINY\r
\r
FRESULT f_forward (\r
	FIL* fp, 						/* Pointer to the file object */\r
	UINT (*func)(const BYTE*,UINT),	/* Pointer to the streaming function */\r
	UINT btf,						/* Number of bytes to forward */\r
	UINT* bf						/* Pointer to number of bytes forwarded */\r
)\r
{\r
	FRESULT res;\r
	DWORD remain, clst, sect;\r
	UINT rcnt;\r
	BYTE csect;\r
\r
\r
	*bf = 0;	/* Clear transfer byte counter */\r
\r
	res = validate(fp);								/* Check validity of the object */\r
	if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
	if (fp->err)									/* Check error */\r
		LEAVE_FF(fp->fs, (FRESULT)fp->err);\r
	if (!(fp->flag & FA_READ))						/* Check access mode */\r
		LEAVE_FF(fp->fs, FR_DENIED);\r
\r
	remain = fp->fsize - fp->fptr;\r
	if (btf > remain) btf = (UINT)remain;			/* Truncate btf by remaining bytes */\r
\r
	for ( ;  btf && (*func)(0, 0);					/* Repeat until all data transferred or stream becomes busy */\r
		fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {\r
		csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1));	/* Sector offset in the cluster */\r
		if ((fp->fptr % SS(fp->fs)) == 0) {			/* On the sector boundary? */\r
			if (!csect) {							/* On the cluster boundary? */\r
				clst = (fp->fptr == 0) ?			/* On the top of the file? */\r
					fp->sclust : get_fat(fp->fs, fp->clust);\r
				if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
				fp->clust = clst;					/* Update current cluster */\r
			}\r
		}\r
		sect = clust2sect(fp->fs, fp->clust);		/* Get current data sector */\r
		if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
		sect += csect;\r
		if (move_window(fp->fs, sect) != FR_OK)		/* Move sector window */\r
			ABORT(fp->fs, FR_DISK_ERR);\r
		fp->dsect = sect;\r
		rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs));	/* Forward data from sector window */\r
		if (rcnt > btf) rcnt = btf;\r
		rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);\r
		if (!rcnt) ABORT(fp->fs, FR_INT_ERR);\r
	}\r
\r
	LEAVE_FF(fp->fs, FR_OK);\r
}\r
#endif /* _USE_FORWARD */\r
\r
\r
\r
#if _USE_MKFS && !_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Create File System on the Drive                                       */\r
/*-----------------------------------------------------------------------*/\r
#define N_ROOTDIR	512		/* Number of root directory entries for FAT12/16 */\r
#define N_FATS		1		/* Number of FATs (1 or 2) */\r
\r
\r
FRESULT f_mkfs (\r
	const TCHAR* path,	/* Logical drive number */\r
	BYTE sfd,			/* Partitioning rule 0:FDISK, 1:SFD */\r
	UINT au				/* Size of allocation unit in unit of byte or sector */\r
)\r
{\r
	static const WORD vst[] = { 1024,   512,  256,  128,   64,    32,   16,    8,    4,    2,   0};\r
	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};\r
	int vol;\r
	BYTE fmt, md, sys, *tbl, pdrv, part;\r
	DWORD n_clst, vs, n, wsect;\r
	UINT i;\r
	DWORD b_vol, b_fat, b_dir, b_data;	/* LBA */\r
	DWORD n_vol, n_rsv, n_fat, n_dir;	/* Size */\r
	FATFS *fs;\r
	DSTATUS stat;\r
\r
\r
	/* Check mounted drive and clear work area */\r
	if (sfd > 1) return FR_INVALID_PARAMETER;\r
	vol = get_ldnumber(&path);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
	fs = FatFs[vol];\r
	if (!fs) return FR_NOT_ENABLED;\r
	fs->fs_type = 0;\r
	pdrv = LD2PD(vol);	/* Physical drive */\r
	part = LD2PT(vol);	/* Partition (0:auto detect, 1-4:get from partition table)*/\r
\r
	/* Get disk statics */\r
	stat = disk_initialize(pdrv);\r
	if (stat & STA_NOINIT) return FR_NOT_READY;\r
	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r
#if _MAX_SS != _MIN_SS		/* Get disk sector size */\r
	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS || SS(fs) < _MIN_SS)\r
		return FR_DISK_ERR;\r
#endif\r
	if (_MULTI_PARTITION && part) {\r
		/* Get partition information from partition table in the MBR */\r
		if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;\r
		if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;\r
		tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];\r
		if (!tbl[4]) return FR_MKFS_ABORTED;	/* No partition? */\r
		b_vol = LD_DWORD(tbl+8);	/* Volume start sector */\r
		n_vol = LD_DWORD(tbl+12);	/* Volume size */\r
	} else {\r
		/* Create a partition in this function */\r
		if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)\r
			return FR_DISK_ERR;\r
		b_vol = (sfd) ? 0 : 63;		/* Volume start sector */\r
		n_vol -= b_vol;				/* Volume size */\r
	}\r
\r
	if (au & (au - 1)) au = 0;\r
	if (!au) {						/* AU auto selection */\r
		vs = n_vol / (2000 / (SS(fs) / 512));\r
		for (i = 0; vs < vst[i]; i++) ;\r
		au = cst[i];\r
	}\r
	if (au >= _MIN_SS) au /= SS(fs);	/* Number of sectors per cluster */\r
	if (!au) au = 1;\r
	if (au > 128) au = 128;\r
\r
	/* Pre-compute number of clusters and FAT sub-type */\r
	n_clst = n_vol / au;\r
	fmt = FS_FAT12;\r
	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;\r
	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;\r
\r
	/* Determine offset and size of FAT structure */\r
	if (fmt == FS_FAT32) {\r
		n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);\r
		n_rsv = 32;\r
		n_dir = 0;\r
	} else {\r
		n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;\r
		n_fat = (n_fat + SS(fs) - 1) / SS(fs);\r
		n_rsv = 1;\r
		n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);\r
	}\r
	b_fat = b_vol + n_rsv;				/* FAT area start sector */\r
	b_dir = b_fat + n_fat * N_FATS;		/* Directory area start sector */\r
	b_data = b_dir + n_dir;				/* Data area start sector */\r
	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED;	/* Too small volume */\r
\r
	/* Align data start sector to erase block boundary (for flash memory media) */\r
	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;\r
	n = (b_data + n - 1) & ~(n - 1);	/* Next nearest erase block from current data start */\r
	n = (n - b_data) / N_FATS;\r
	if (fmt == FS_FAT32) {		/* FAT32: Move FAT offset */\r
		n_rsv += n;\r
		b_fat += n;\r
	} else {					/* FAT12/16: Expand FAT size */\r
		n_fat += n;\r
	}\r
\r
	/* Determine number of clusters and final check of validity of the FAT sub-type */\r
	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;\r
	if (   (fmt == FS_FAT16 && n_clst < MIN_FAT16)\r
		|| (fmt == FS_FAT32 && n_clst < MIN_FAT32))\r
		return FR_MKFS_ABORTED;\r
\r
	/* Determine system ID in the partition table */\r
	if (fmt == FS_FAT32) {\r
		sys = 0x0C;		/* FAT32X */\r
	} else {\r
		if (fmt == FS_FAT12 && n_vol < 0x10000) {\r
			sys = 0x01;	/* FAT12(<65536) */\r
		} else {\r
			sys = (n_vol < 0x10000) ? 0x04 : 0x06;	/* FAT16(<65536) : FAT12/16(>=65536) */\r
		}\r
	}\r
\r
	if (_MULTI_PARTITION && part) {\r
		/* Update system ID in the partition table */\r
		tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];\r
		tbl[4] = sys;\r
		if (disk_write(pdrv, fs->win, 0, 1) != RES_OK)	/* Write it to teh MBR */\r
			return FR_DISK_ERR;\r
		md = 0xF8;\r
	} else {\r
		if (sfd) {	/* No partition table (SFD) */\r
			md = 0xF0;\r
		} else {	/* Create partition table (FDISK) */\r
			mem_set(fs->win, 0, SS(fs));\r
			tbl = fs->win+MBR_Table;	/* Create partition table for single partition in the drive */\r
			tbl[1] = 1;						/* Partition start head */\r
			tbl[2] = 1;						/* Partition start sector */\r
			tbl[3] = 0;						/* Partition start cylinder */\r
			tbl[4] = sys;					/* System type */\r
			tbl[5] = 254;					/* Partition end head */\r
			n = (b_vol + n_vol) / 63 / 255;\r
			tbl[6] = (BYTE)(n >> 2 | 63);	/* Partition end sector */\r
			tbl[7] = (BYTE)n;				/* End cylinder */\r
			ST_DWORD(tbl+8, 63);			/* Partition start in LBA */\r
			ST_DWORD(tbl+12, n_vol);		/* Partition size in LBA */\r
			ST_WORD(fs->win+BS_55AA, 0xAA55);	/* MBR signature */\r
			if (disk_write(pdrv, fs->win, 0, 1) != RES_OK)	/* Write it to the MBR */\r
				return FR_DISK_ERR;\r
			md = 0xF8;\r
		}\r
	}\r
\r
	/* Create BPB in the VBR */\r
	tbl = fs->win;							/* Clear sector */\r
	mem_set(tbl, 0, SS(fs));\r
	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */\r
	i = SS(fs);								/* Sector size */\r
	ST_WORD(tbl+BPB_BytsPerSec, i);\r
	tbl[BPB_SecPerClus] = (BYTE)au;			/* Sectors per cluster */\r
	ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv);		/* Reserved sectors */\r
	tbl[BPB_NumFATs] = N_FATS;				/* Number of FATs */\r
	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR;	/* Number of root directory entries */\r
	ST_WORD(tbl+BPB_RootEntCnt, i);\r
	if (n_vol < 0x10000) {					/* Number of total sectors */\r
		ST_WORD(tbl+BPB_TotSec16, n_vol);\r
	} else {\r
		ST_DWORD(tbl+BPB_TotSec32, n_vol);\r
	}\r
	tbl[BPB_Media] = md;					/* Media descriptor */\r
	ST_WORD(tbl+BPB_SecPerTrk, 63);			/* Number of sectors per track */\r
	ST_WORD(tbl+BPB_NumHeads, 255);			/* Number of heads */\r
	ST_DWORD(tbl+BPB_HiddSec, b_vol);		/* Hidden sectors */\r
	n = GET_FATTIME();						/* Use current time as VSN */\r
	if (fmt == FS_FAT32) {\r
		ST_DWORD(tbl+BS_VolID32, n);		/* VSN */\r
		ST_DWORD(tbl+BPB_FATSz32, n_fat);	/* Number of sectors per FAT */\r
		ST_DWORD(tbl+BPB_RootClus, 2);		/* Root directory start cluster (2) */\r
		ST_WORD(tbl+BPB_FSInfo, 1);			/* FSINFO record offset (VBR+1) */\r
		ST_WORD(tbl+BPB_BkBootSec, 6);		/* Backup boot record offset (VBR+6) */\r
		tbl[BS_DrvNum32] = 0x80;			/* Drive number */\r
		tbl[BS_BootSig32] = 0x29;			/* Extended boot signature */\r
		mem_cpy(tbl+BS_VolLab32, "NO NAME    " "FAT32   ", 19);	/* Volume label, FAT signature */\r
	} else {\r
		ST_DWORD(tbl+BS_VolID, n);			/* VSN */\r
		ST_WORD(tbl+BPB_FATSz16, n_fat);	/* Number of sectors per FAT */\r
		tbl[BS_DrvNum] = 0x80;				/* Drive number */\r
		tbl[BS_BootSig] = 0x29;				/* Extended boot signature */\r
		mem_cpy(tbl+BS_VolLab, "NO NAME    " "FAT     ", 19);	/* Volume label, FAT signature */\r
	}\r
	ST_WORD(tbl+BS_55AA, 0xAA55);			/* Signature (Offset is fixed here regardless of sector size) */\r
	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK)	/* Write it to the VBR sector */\r
		return FR_DISK_ERR;\r
	if (fmt == FS_FAT32)					/* Write backup VBR if needed (VBR+6) */\r
		disk_write(pdrv, tbl, b_vol + 6, 1);\r
\r
	/* Initialize FAT area */\r
	wsect = b_fat;\r
	for (i = 0; i < N_FATS; i++) {		/* Initialize each FAT copy */\r
		mem_set(tbl, 0, SS(fs));			/* 1st sector of the FAT  */\r
		n = md;								/* Media descriptor byte */\r
		if (fmt != FS_FAT32) {\r
			n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;\r
			ST_DWORD(tbl+0, n);				/* Reserve cluster #0-1 (FAT12/16) */\r
		} else {\r
			n |= 0xFFFFFF00;\r
			ST_DWORD(tbl+0, n);				/* Reserve cluster #0-1 (FAT32) */\r
			ST_DWORD(tbl+4, 0xFFFFFFFF);\r
			ST_DWORD(tbl+8, 0x0FFFFFFF);	/* Reserve cluster #2 for root directory */\r
		}\r
		if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)\r
			return FR_DISK_ERR;\r
		mem_set(tbl, 0, SS(fs));			/* Fill following FAT entries with zero */\r
		for (n = 1; n < n_fat; n++) {		/* This loop may take a time on FAT32 volume due to many single sector writes */\r
			if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)\r
				return FR_DISK_ERR;\r
		}\r
	}\r
\r
	/* Initialize root directory */\r
	i = (fmt == FS_FAT32) ? au : (UINT)n_dir;\r
	do {\r
		if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)\r
			return FR_DISK_ERR;\r
	} while (--i);\r
\r
#if _USE_TRIM	/* Erase data area if needed */\r
	{\r
		DWORD eb[2];\r
\r
		eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;\r
		disk_ioctl(pdrv, CTRL_TRIM, eb);\r
	}\r
#endif\r
\r
	/* Create FSINFO if needed */\r
	if (fmt == FS_FAT32) {\r
		ST_DWORD(tbl+FSI_LeadSig, 0x41615252);\r
		ST_DWORD(tbl+FSI_StrucSig, 0x61417272);\r
		ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);	/* Number of free clusters */\r
		ST_DWORD(tbl+FSI_Nxt_Free, 2);				/* Last allocated cluster# */\r
		ST_WORD(tbl+BS_55AA, 0xAA55);\r
		disk_write(pdrv, tbl, b_vol + 1, 1);	/* Write original (VBR+1) */\r
		disk_write(pdrv, tbl, b_vol + 7, 1);	/* Write backup (VBR+7) */\r
	}\r
\r
	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;\r
}\r
\r
\r
\r
#if _MULTI_PARTITION\r
/*-----------------------------------------------------------------------*/\r
/* Divide Physical Drive                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_fdisk (\r
	BYTE pdrv,			/* Physical drive number */\r
	const DWORD szt[],	/* Pointer to the size table for each partitions */\r
	void* work			/* Pointer to the working buffer */\r
)\r
{\r
	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;\r
	BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;\r
	DSTATUS stat;\r
	DWORD sz_disk, sz_part, s_part;\r
\r
\r
	stat = disk_initialize(pdrv);\r
	if (stat & STA_NOINIT) return FR_NOT_READY;\r
	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r
	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;\r
\r
	/* Determine CHS in the table regardless of the drive geometry */\r
	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;\r
	if (n == 256) n--;\r
	e_hd = n - 1;\r
	sz_cyl = 63 * n;\r
	tot_cyl = sz_disk / sz_cyl;\r
\r
	/* Create partition table */\r
	mem_set(buf, 0, _MAX_SS);\r
	p = buf + MBR_Table; b_cyl = 0;\r
	for (i = 0; i < 4; i++, p += SZ_PTE) {\r
		p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;\r
		if (!p_cyl) continue;\r
		s_part = (DWORD)sz_cyl * b_cyl;\r
		sz_part = (DWORD)sz_cyl * p_cyl;\r
		if (i == 0) {	/* Exclude first track of cylinder 0 */\r
			s_hd = 1;\r
			s_part += 63; sz_part -= 63;\r
		} else {\r
			s_hd = 0;\r
		}\r
		e_cyl = b_cyl + p_cyl - 1;\r
		if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;\r
\r
		/* Set partition table */\r
		p[1] = s_hd;						/* Start head */\r
		p[2] = (BYTE)((b_cyl >> 2) + 1);	/* Start sector */\r
		p[3] = (BYTE)b_cyl;					/* Start cylinder */\r
		p[4] = 0x06;						/* System type (temporary setting) */\r
		p[5] = e_hd;						/* End head */\r
		p[6] = (BYTE)((e_cyl >> 2) + 63);	/* End sector */\r
		p[7] = (BYTE)e_cyl;					/* End cylinder */\r
		ST_DWORD(p + 8, s_part);			/* Start sector in LBA */\r
		ST_DWORD(p + 12, sz_part);			/* Partition size */\r
\r
		/* Next partition */\r
		b_cyl += p_cyl;\r
	}\r
	ST_WORD(p, 0xAA55);\r
\r
	/* Write it to the MBR */\r
	return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;\r
}\r
\r
\r
#endif /* _MULTI_PARTITION */\r
#endif /* _USE_MKFS && !_FS_READONLY */\r
\r
\r
\r
\r
#if _USE_STRFUNC\r
/*-----------------------------------------------------------------------*/\r
/* Get a string from the file                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
TCHAR* f_gets (\r
	TCHAR* buff,	/* Pointer to the string buffer to read */\r
	int len,		/* Size of string buffer (characters) */\r
	FIL* fp			/* Pointer to the file object */\r
)\r
{\r
	int n = 0;\r
	TCHAR c, *p = buff;\r
	BYTE s[2];\r
	UINT rc;\r
\r
\r
	while (n < len - 1) {	/* Read characters until buffer gets filled */\r
#if _USE_LFN && _LFN_UNICODE\r
#if _STRF_ENCODE == 3		/* Read a character in UTF-8 */\r
		f_read(fp, s, 1, &rc);\r
		if (rc != 1) break;\r
		c = s[0];\r
		if (c >= 0x80) {\r
			if (c < 0xC0) continue;	/* Skip stray trailer */\r
			if (c < 0xE0) {			/* Two-byte sequence */\r
				f_read(fp, s, 1, &rc);\r
				if (rc != 1) break;\r
				c = (c & 0x1F) << 6 | (s[0] & 0x3F);\r
				if (c < 0x80) c = '?';\r
			} else {\r
				if (c < 0xF0) {		/* Three-byte sequence */\r
					f_read(fp, s, 2, &rc);\r
					if (rc != 2) break;\r
					c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);\r
					if (c < 0x800) c = '?';\r
				} else {			/* Reject four-byte sequence */\r
					c = '?';\r
				}\r
			}\r
		}\r
#elif _STRF_ENCODE == 2		/* Read a character in UTF-16BE */\r
		f_read(fp, s, 2, &rc);\r
		if (rc != 2) break;\r
		c = s[1] + (s[0] << 8);\r
#elif _STRF_ENCODE == 1		/* Read a character in UTF-16LE */\r
		f_read(fp, s, 2, &rc);\r
		if (rc != 2) break;\r
		c = s[0] + (s[1] << 8);\r
#else						/* Read a character in ANSI/OEM */\r
		f_read(fp, s, 1, &rc);\r
		if (rc != 1) break;\r
		c = s[0];\r
		if (IsDBCS1(c)) {\r
			f_read(fp, s, 1, &rc);\r
			if (rc != 1) break;\r
			c = (c << 8) + s[0];\r
		}\r
		c = ff_convert(c, 1);	/* OEM -> Unicode */\r
		if (!c) c = '?';\r
#endif\r
#else						/* Read a character without conversion */\r
		f_read(fp, s, 1, &rc);\r
		if (rc != 1) break;\r
		c = s[0];\r
#endif\r
		if (_USE_STRFUNC == 2 && c == '\r') continue;	/* Strip '\r' */\r
		*p++ = c;\r
		n++;\r
		if (c == '\n') break;		/* Break on EOL */\r
	}\r
	*p = 0;\r
	return n ? buff : 0;			/* When no data read (eof or error), return with error. */\r
}\r
\r
\r
\r
#if !_FS_READONLY\r
#include <stdarg.h>\r
/*-----------------------------------------------------------------------*/\r
/* Put a character to the file                                           */\r
/*-----------------------------------------------------------------------*/\r
\r
typedef struct {\r
	FIL* fp;\r
	int idx, nchr;\r
	BYTE buf[64];\r
} putbuff;\r
\r
\r
static\r
void putc_bfd (\r
	putbuff* pb,\r
	TCHAR c\r
)\r
{\r
	UINT bw;\r
	int i;\r
\r
\r
	if (_USE_STRFUNC == 2 && c == '\n')	 /* LF -> CRLF conversion */\r
		putc_bfd(pb, '\r');\r
\r
	i = pb->idx;	/* Buffer write index (-1:error) */\r
	if (i < 0) return;\r
\r
#if _USE_LFN && _LFN_UNICODE\r
#if _STRF_ENCODE == 3			/* Write a character in UTF-8 */\r
	if (c < 0x80) {				/* 7-bit */\r
		pb->buf[i++] = (BYTE)c;\r
	} else {\r
		if (c < 0x800) {		/* 11-bit */\r
			pb->buf[i++] = (BYTE)(0xC0 | c >> 6);\r
		} else {				/* 16-bit */\r
			pb->buf[i++] = (BYTE)(0xE0 | c >> 12);\r
			pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));\r
		}\r
		pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));\r
	}\r
#elif _STRF_ENCODE == 2			/* Write a character in UTF-16BE */\r
	pb->buf[i++] = (BYTE)(c >> 8);\r
	pb->buf[i++] = (BYTE)c;\r
#elif _STRF_ENCODE == 1			/* Write a character in UTF-16LE */\r
	pb->buf[i++] = (BYTE)c;\r
	pb->buf[i++] = (BYTE)(c >> 8);\r
#else							/* Write a character in ANSI/OEM */\r
	c = ff_convert(c, 0);	/* Unicode -> OEM */\r
	if (!c) c = '?';\r
	if (c >= 0x100)\r
		pb->buf[i++] = (BYTE)(c >> 8);\r
	pb->buf[i++] = (BYTE)c;\r
#endif\r
#else							/* Write a character without conversion */\r
	pb->buf[i++] = (BYTE)c;\r
#endif\r
\r
	if (i >= (int)(sizeof pb->buf) - 3) {	/* Write buffered characters to the file */\r
		f_write(pb->fp, pb->buf, (UINT)i, &bw);\r
		i = (bw == (UINT)i) ? 0 : -1;\r
	}\r
	pb->idx = i;\r
	pb->nchr++;\r
}\r
\r
\r
\r
int f_putc (\r
	TCHAR c,	/* A character to be output */\r
	FIL* fp		/* Pointer to the file object */\r
)\r
{\r
	putbuff pb;\r
	UINT nw;\r
\r
\r
	pb.fp = fp;			/* Initialize output buffer */\r
	pb.nchr = pb.idx = 0;\r
\r
	putc_bfd(&pb, c);	/* Put a character */\r
\r
	if (   pb.idx >= 0	/* Flush buffered characters to the file */\r
		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK\r
		&& (UINT)pb.idx == nw) return pb.nchr;\r
	return EOF;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Put a string to the file                                              */\r
/*-----------------------------------------------------------------------*/\r
\r
int f_puts (\r
	const TCHAR* str,	/* Pointer to the string to be output */\r
	FIL* fp				/* Pointer to the file object */\r
)\r
{\r
	putbuff pb;\r
	UINT nw;\r
\r
\r
	pb.fp = fp;				/* Initialize output buffer */\r
	pb.nchr = pb.idx = 0;\r
\r
	while (*str)			/* Put the string */\r
		putc_bfd(&pb, *str++);\r
\r
	if (   pb.idx >= 0		/* Flush buffered characters to the file */\r
		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK\r
		&& (UINT)pb.idx == nw) return pb.nchr;\r
	return EOF;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Put a formatted string to the file                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
int f_printf (\r
	FIL* fp,			/* Pointer to the file object */\r
	const TCHAR* fmt,	/* Pointer to the format string */\r
	...					/* Optional arguments... */\r
)\r
{\r
	va_list arp;\r
	BYTE f, r;\r
	UINT nw, i, j, w;\r
	DWORD v;\r
	TCHAR c, d, s[16], *p;\r
	putbuff pb;\r
\r
\r
	pb.fp = fp;				/* Initialize output buffer */\r
	pb.nchr = pb.idx = 0;\r
\r
	va_start(arp, fmt);\r
\r
	for (;;) {\r
		c = *fmt++;\r
		if (c == 0) break;			/* End of string */\r
		if (c != '%') {				/* Non escape character */\r
			putc_bfd(&pb, c);\r
			continue;\r
		}\r
		w = f = 0;\r
		c = *fmt++;\r
		if (c == '0') {				/* Flag: '0' padding */\r
			f = 1; c = *fmt++;\r
		} else {\r
			if (c == '-') {			/* Flag: left justified */\r
				f = 2; c = *fmt++;\r
			}\r
		}\r
		while (IsDigit(c)) {		/* Precision */\r
			w = w * 10 + c - '0';\r
			c = *fmt++;\r
		}\r
		if (c == 'l' || c == 'L') {	/* Prefix: Size is long int */\r
			f |= 4; c = *fmt++;\r
		}\r
		if (!c) break;\r
		d = c;\r
		if (IsLower(d)) d -= 0x20;\r
		switch (d) {				/* Type is... */\r
		case 'S' :					/* String */\r
			p = va_arg(arp, TCHAR*);\r
			for (j = 0; p[j]; j++) ;\r
			if (!(f & 2)) {\r
				while (j++ < w) putc_bfd(&pb, ' ');\r
			}\r
			while (*p) putc_bfd(&pb, *p++);\r
			while (j++ < w) putc_bfd(&pb, ' ');\r
			continue;\r
		case 'C' :					/* Character */\r
			putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;\r
		case 'B' :					/* Binary */\r
			r = 2; break;\r
		case 'O' :					/* Octal */\r
			r = 8; break;\r
		case 'D' :					/* Signed decimal */\r
		case 'U' :					/* Unsigned decimal */\r
			r = 10; break;\r
		case 'X' :					/* Hexdecimal */\r
			r = 16; break;\r
		default:					/* Unknown type (pass-through) */\r
			putc_bfd(&pb, c); continue;\r
		}\r
\r
		/* Get an argument and put it in numeral */\r
		v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));\r
		if (d == 'D' && (v & 0x80000000)) {\r
			v = 0 - v;\r
			f |= 8;\r
		}\r
		i = 0;\r
		do {\r
			d = (TCHAR)(v % r); v /= r;\r
			if (d > 9) d += (c == 'x') ? 0x27 : 0x07;\r
			s[i++] = d + '0';\r
		} while (v && i < sizeof s / sizeof s[0]);\r
		if (f & 8) s[i++] = '-';\r
		j = i; d = (f & 1) ? '0' : ' ';\r
		while (!(f & 2) && j++ < w) putc_bfd(&pb, d);\r
		do putc_bfd(&pb, s[--i]); while (i);\r
		while (j++ < w) putc_bfd(&pb, d);\r
	}\r
\r
	va_end(arp);\r
\r
	if (   pb.idx >= 0		/* Flush buffered characters to the file */\r
		&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK\r
		&& (UINT)pb.idx == nw) return pb.nchr;\r
	return EOF;\r
}\r
\r
#endif /* !_FS_READONLY */\r
#endif /* _USE_STRFUNC */\r