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Dependencies: FFT
Diff: FATFileSystem/ChaN/ff.cpp
- Revision:
- 0:d6c9b09b4042
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/ChaN/ff.cpp Wed Dec 02 18:02:03 2020 +0000
@@ -0,0 +1,4691 @@
+/*----------------------------------------------------------------------------/
+/ FatFs - FAT file system module R0.11a (C)ChaN, 2015 /
+/-----------------------------------------------------------------------------/
+/ FatFs module is a free software that opened under license policy of
+/ following conditions.
+/
+/ Copyright (C) 2015, ChaN, all right reserved.
+/
+/ 1. Redistributions of source code must retain the above copyright notice,
+/ this condition and the following disclaimer.
+/
+/ This software is provided by the copyright holder and contributors "AS IS"
+/ and any warranties related to this software are DISCLAIMED.
+/ The copyright owner or contributors be NOT LIABLE for any damages caused
+/ by use of this software.
+/----------------------------------------------------------------------------*/
+
+
+#include "ff.h" /* Declarations of FatFs API */
+#include "diskio.h" /* Declarations of disk I/O functions */
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 64180 /* Revision ID */
+#error Wrong include file (ff.h).
+#endif
+
+
+/* Reentrancy related */
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area cannot be used at thread-safe configuration
+#endif
+#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
+#else
+#define ENTER_FF(fs)
+#define LEAVE_FF(fs, res) return res
+#endif
+
+#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
+
+
+/* Definitions of sector size */
+#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)
+#error Wrong sector size configuration
+#endif
+#if _MAX_SS == _MIN_SS
+#define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
+#else
+#define SS(fs) ((fs)->ssize) /* Variable sector size */
+#endif
+
+
+/* Timestamp feature */
+#if _FS_NORTC == 1
+#if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
+#error Invalid _FS_NORTC settings
+#endif
+#define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
+#else
+#define GET_FATTIME() get_fattime()
+#endif
+
+
+/* File access control feature */
+#if _FS_LOCK
+#if _FS_READONLY
+#error _FS_LOCK must be 0 at read-only configuration
+#endif
+typedef struct {
+ FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */
+ DWORD clu; /* Object ID 2, directory (0:root) */
+ WORD idx; /* Object ID 3, directory index */
+ WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
+} FILESEM;
+#endif
+
+
+
+/* DBCS code ranges and SBCS upper conversion tables */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+ 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 771 /* KBL */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
+ 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Latin 1 */
+#define _DF1S 0
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
+ 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
+ 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
+ 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
+ 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
+ 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 860 /* Portuguese */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 861 /* Icelandic */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
+ 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 863 /* Canadian-French */
+#define _DF1S 0
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
+ 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
+ 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 864 /* Arabic */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+ 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 865 /* Nordic */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+ 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+ 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 869 /* Greek 2 */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
+ 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+ 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+ 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
+ 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
+ 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#if _USE_LFN
+#error Cannot use LFN feature without valid code page.
+#endif
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+/* Character code support macros */
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+#define IsDigit(c) (((c)>='0')&&((c)<='9'))
+
+#if _DF1S /* Code page is DBCS */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* Code page is SBCS */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
+
+/* Name status flags */
+#define NSFLAG 11 /* Index of name status byte in fn[] */
+#define NS_LOSS 0x01 /* Out of 8.3 format */
+#define NS_LFN 0x02 /* Force to create LFN entry */
+#define NS_LAST 0x04 /* Last segment */
+#define NS_BODY 0x08 /* Lower case flag (body) */
+#define NS_EXT 0x10 /* Lower case flag (ext) */
+#define NS_DOT 0x20 /* Dot entry */
+
+
+/* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
+#define MIN_FAT16 4086U /* Minimum number of clusters of FAT16 */
+#define MIN_FAT32 65526U /* Minimum number of clusters of FAT32 */
+
+
+/* FatFs refers the members in the FAT structures as byte array instead of
+/ structure members because the structure is not binary compatible between
+/ different platforms */
+
+#define BS_jmpBoot 0 /* x86 jump instruction (3) */
+#define BS_OEMName 3 /* OEM name (8) */
+#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
+#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
+#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
+#define BPB_NumFATs 16 /* Number of FAT copies (1) */
+#define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */
+#define BPB_TotSec16 19 /* Volume size [sector] (2) */
+#define BPB_Media 21 /* Media descriptor (1) */
+#define BPB_FATSz16 22 /* FAT size [sector] (2) */
+#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
+#define BPB_NumHeads 26 /* Number of heads (2) */
+#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
+#define BPB_TotSec32 32 /* Volume size [sector] (4) */
+#define BS_DrvNum 36 /* Physical drive number (1) */
+#define BS_NTres 37 /* Error flag (1) */
+#define BS_BootSig 38 /* Extended boot signature (1) */
+#define BS_VolID 39 /* Volume serial number (4) */
+#define BS_VolLab 43 /* Volume label (8) */
+#define BS_FilSysType 54 /* File system type (1) */
+#define BPB_FATSz32 36 /* FAT size [sector] (4) */
+#define BPB_ExtFlags 40 /* Extended flags (2) */
+#define BPB_FSVer 42 /* File system version (2) */
+#define BPB_RootClus 44 /* Root directory first cluster (4) */
+#define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */
+#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
+#define BS_DrvNum32 64 /* Physical drive number (1) */
+#define BS_NTres32 65 /* Error flag (1) */
+#define BS_BootSig32 66 /* Extended boot signature (1) */
+#define BS_VolID32 67 /* Volume serial number (4) */
+#define BS_VolLab32 71 /* Volume label (8) */
+#define BS_FilSysType32 82 /* File system type (1) */
+#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
+#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
+#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
+#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
+#define MBR_Table 446 /* MBR: Partition table offset (2) */
+#define SZ_PTE 16 /* MBR: Size of a partition table entry */
+#define BS_55AA 510 /* Signature word (2) */
+
+#define DIR_Name 0 /* Short file name (11) */
+#define DIR_Attr 11 /* Attribute (1) */
+#define DIR_NTres 12 /* Lower case flag (1) */
+#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
+#define DIR_CrtTime 14 /* Created time (2) */
+#define DIR_CrtDate 16 /* Created date (2) */
+#define DIR_LstAccDate 18 /* Last accessed date (2) */
+#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
+#define DIR_WrtTime 22 /* Modified time (2) */
+#define DIR_WrtDate 24 /* Modified date (2) */
+#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
+#define DIR_FileSize 28 /* File size (4) */
+#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
+#define LDIR_Attr 11 /* LFN attribute (1) */
+#define LDIR_Type 12 /* LFN type (1) */
+#define LDIR_Chksum 13 /* Checksum of corresponding SFN entry */
+#define LDIR_FstClusLO 26 /* Must be zero (0) */
+#define SZ_DIRE 32 /* Size of a directory entry */
+#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
+#define DDEM 0xE5 /* Deleted directory entry mark at DIR_Name[0] */
+#define RDDEM 0x05 /* Replacement of the character collides with DDEM */
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Work Area
+
+---------------------------------------------------------------------------*/
+
+/* Remark: Uninitialized variables with static duration are guaranteed
+/ zero/null at start-up. If not, either the linker or start-up routine
+/ being used is not compliance with ANSI-C standard.
+*/
+
+#if _VOLUMES < 1 || _VOLUMES > 9
+#error Wrong _VOLUMES setting
+#endif
+static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
+static WORD Fsid; /* File system mount ID */
+
+#if _FS_RPATH && _VOLUMES >= 2
+static BYTE CurrVol; /* Current drive */
+#endif
+
+#if _FS_LOCK
+static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
+#endif
+
+#if _USE_LFN == 0 /* Non LFN feature */
+#define DEFINE_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) (dobj).fn = sfn
+#define FREE_BUF()
+#else
+#if _MAX_LFN < 12 || _MAX_LFN > 255
+#error Wrong _MAX_LFN setting
+#endif
+#if _USE_LFN == 1 /* LFN feature with static working buffer */
+static WCHAR LfnBuf[_MAX_LFN + 1];
+#define DEFINE_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
+#define FREE_BUF()
+#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
+#define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
+#define FREE_BUF()
+#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
+#define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR *lfn
+#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); (dobj).lfn = lfn; (dobj).fn = sfn; }
+#define FREE_BUF() ff_memfree(lfn)
+#else
+#error Wrong _USE_LFN setting
+#endif
+#endif
+
+#ifdef _EXCVT
+static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
+#endif
+
+
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+ const BYTE *s = (const BYTE*)src;
+
+#if _WORD_ACCESS == 1
+ while (cnt >= sizeof (int)) {
+ *(int*)d = *(int*)s;
+ d += sizeof (int); s += sizeof (int);
+ cnt -= sizeof (int);
+ }
+#endif
+ while (cnt--)
+ *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, UINT cnt) {
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
+ int r = 0;
+
+ while (cnt-- && (r = *d++ - *s++) == 0) ;
+ return r;
+}
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {
+ while (*str && *str != chr) str++;
+ return *str;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume */
+/*-----------------------------------------------------------------------*/
+#if _FS_REENTRANT
+static
+int lock_fs (
+ FATFS* fs /* File system object */
+)
+{
+ return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+ FATFS* fs, /* File system object */
+ FRESULT res /* Result code to be returned */
+)
+{
+ if (fs &&
+ res != FR_NOT_ENABLED &&
+ res != FR_INVALID_DRIVE &&
+ res != FR_INVALID_OBJECT &&
+ res != FR_TIMEOUT) {
+ ff_rel_grant(fs->sobj);
+ }
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* File lock control functions */
+/*-----------------------------------------------------------------------*/
+#if _FS_LOCK
+
+static
+FRESULT chk_lock ( /* Check if the file can be accessed */
+ FATFS_DIR* dp, /* Directory object pointing the file to be checked */
+ int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i, be;
+
+ /* Search file semaphore table */
+ for (i = be = 0; i < _FS_LOCK; i++) {
+ if (Files[i].fs) { /* Existing entry */
+ if (Files[i].fs == dp->fs && /* Check if the object matched with an open object */
+ Files[i].clu == dp->sclust &&
+ Files[i].idx == dp->index) break;
+ } else { /* Blank entry */
+ be = 1;
+ }
+ }
+ if (i == _FS_LOCK) /* The object is not opened */
+ return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */
+
+ /* The object has been opened. Reject any open against writing file and all write mode open */
+ return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock (void) /* Check if an entry is available for a new object */
+{
+ UINT i;
+
+ for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+ return (i == _FS_LOCK) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
+ FATFS_DIR* dp, /* Directory object pointing the file to register or increment */
+ int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i;
+
+
+ for (i = 0; i < _FS_LOCK; i++) { /* Find the object */
+ if (Files[i].fs == dp->fs &&
+ Files[i].clu == dp->sclust &&
+ Files[i].idx == dp->index) break;
+ }
+
+ if (i == _FS_LOCK) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+ if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */
+ Files[i].fs = dp->fs;
+ Files[i].clu = dp->sclust;
+ Files[i].idx = dp->index;
+ Files[i].ctr = 0;
+ }
+
+ if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
+
+ Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement object open counter */
+ UINT i /* Semaphore index (1..) */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_LOCK) { /* Shift index number origin from 0 */
+ n = Files[i].ctr;
+ if (n == 0x100) n = 0; /* If write mode open, delete the entry */
+ if (n) n--; /* Decrement read mode open count */
+ Files[i].ctr = n;
+ if (!n) Files[i].fs = 0; /* Delete the entry if open count gets zero */
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR; /* Invalid index nunber */
+ }
+ return res;
+}
+
+
+static
+void clear_lock ( /* Clear lock entries of the volume */
+ FATFS *fs
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_LOCK; i++) {
+ if (Files[i].fs == fs) Files[i].fs = 0;
+ }
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Move/Flush disk access window in the file system object */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync_window ( /* FR_OK:succeeded, !=0:error */
+ FATFS* fs /* File system object */
+)
+{
+ DWORD wsect;
+ UINT nf;
+ FRESULT res = FR_OK;
+
+
+ if (fs->wflag) { /* Write back the sector if it is dirty */
+ wsect = fs->winsect; /* Current sector number */
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
+ res = FR_DISK_ERR;
+ } else {
+ fs->wflag = 0;
+ if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */
+ for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */
+ wsect += fs->fsize;
+ disk_write(fs->drv, fs->win, wsect, 1);
+ }
+ }
+ }
+ }
+ return res;
+}
+#endif
+
+
+static
+FRESULT move_window ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS* fs, /* File system object */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
+)
+{
+ FRESULT res = FR_OK;
+
+
+ if (sector != fs->winsect) { /* Window offset changed? */
+#if !_FS_READONLY
+ res = sync_window(fs); /* Write-back changes */
+#endif
+ if (res == FR_OK) { /* Fill sector window with new data */
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
+ sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */
+ res = FR_DISK_ERR;
+ }
+ fs->winsect = sector;
+ }
+ }
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize file system and strage device */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */
+ FATFS* fs /* File system object */
+)
+{
+ FRESULT res;
+
+
+ res = sync_window(fs);
+ if (res == FR_OK) {
+ /* Update FSInfo sector if needed */
+ if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
+ /* Create FSInfo structure */
+ mem_set(fs->win, 0, SS(fs));
+ ST_WORD(fs->win + BS_55AA, 0xAA55);
+ ST_DWORD(fs->win + FSI_LeadSig, 0x41615252);
+ ST_DWORD(fs->win + FSI_StrucSig, 0x61417272);
+ ST_DWORD(fs->win + FSI_Free_Count, fs->free_clust);
+ ST_DWORD(fs->win + FSI_Nxt_Free, fs->last_clust);
+ /* Write it into the FSInfo sector */
+ fs->winsect = fs->volbase + 1;
+ disk_write(fs->drv, fs->win, fs->winsect, 1);
+ fs->fsi_flag = 0;
+ }
+ /* Make sure that no pending write process in the physical drive */
+ if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
+ res = FR_DISK_ERR;
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+/* Hidden API for hacks and disk tools */
+
+DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
+ FATFS* fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+/* Hidden API for hacks and disk tools */
+
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
+ FATFS* fs, /* File system object */
+ DWORD clst /* FAT index number (cluster number) to get the value */
+)
+{
+ UINT wc, bc;
+ BYTE *p;
+ DWORD val;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
+ val = 1; /* Internal error */
+
+ } else {
+ val = 0xFFFFFFFF; /* Default value falls on disk error */
+
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = (UINT)clst; bc += bc / 2;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
+ wc = fs->win[bc++ % SS(fs)];
+ if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
+ wc |= fs->win[bc % SS(fs)] << 8;
+ val = clst & 1 ? wc >> 4 : (wc & 0xFFF);
+ break;
+
+ case FS_FAT16 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ val = LD_WORD(p);
+ break;
+
+ case FS_FAT32 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ val = LD_DWORD(p) & 0x0FFFFFFF;
+ break;
+
+ default:
+ val = 1; /* Internal error */
+ }
+ }
+
+ return val;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+/* Hidden API for hacks and disk tools */
+
+#if !_FS_READONLY
+FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS* fs, /* File system object */
+ DWORD clst, /* FAT index number (cluster number) to be changed */
+ DWORD val /* New value to be set to the entry */
+)
+{
+ UINT bc;
+ BYTE *p;
+ FRESULT res;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
+ res = FR_INT_ERR;
+
+ } else {
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = (UINT)clst; bc += bc / 2;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc++ % SS(fs)];
+ *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+ fs->wflag = 1;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+ fs->wflag = 1;
+ break;
+
+ case FS_FAT16 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
+ fs->wflag = 1;
+ break;
+
+ case FS_FAT32 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
+ fs->wflag = 1;
+ break;
+
+ default :
+ res = FR_INT_ERR;
+ }
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS* fs, /* File system object */
+ DWORD clst /* Cluster# to remove a chain from */
+)
+{
+ FRESULT res;
+ DWORD nxt;
+#if _USE_TRIM
+ DWORD scl = clst, ecl = clst, rt[2];
+#endif
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
+ res = FR_INT_ERR;
+
+ } else {
+ res = FR_OK;
+ while (clst < fs->n_fatent) { /* Not a last link? */
+ nxt = get_fat(fs, clst); /* Get cluster status */
+ if (nxt == 0) break; /* Empty cluster? */
+ if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
+ if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
+ res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
+ if (res != FR_OK) break;
+ if (fs->free_clust != 0xFFFFFFFF) { /* Update FSINFO */
+ fs->free_clust++;
+ fs->fsi_flag |= 1;
+ }
+#if _USE_TRIM
+ if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
+ ecl = nxt;
+ } else { /* End of contiguous clusters */
+ rt[0] = clust2sect(fs, scl); /* Start sector */
+ rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
+ disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Erase the block */
+ scl = ecl = nxt;
+ }
+#endif
+ clst = nxt; /* Next cluster */
+ }
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch or Create a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+ FATFS* fs, /* File system object */
+ DWORD clst /* Cluster# to stretch, 0:Create a new chain */
+)
+{
+ DWORD cs, ncl, scl;
+ FRESULT res;
+
+
+ if (clst == 0) { /* Create a new chain */
+ scl = fs->last_clust; /* Get suggested start point */
+ if (!scl || scl >= fs->n_fatent) scl = 1;
+ }
+ else { /* Stretch the current chain */
+ cs = get_fat(fs, clst); /* Check the cluster status */
+ if (cs < 2) return 1; /* Invalid value */
+ if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */
+ if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
+ scl = clst;
+ }
+
+ ncl = scl; /* Start cluster */
+ for (;;) {
+ ncl++; /* Next cluster */
+ if (ncl >= fs->n_fatent) { /* Check wrap around */
+ ncl = 2;
+ if (ncl > scl) return 0; /* No free cluster */
+ }
+ cs = get_fat(fs, ncl); /* Get the cluster status */
+ if (cs == 0) break; /* Found a free cluster */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
+ return cs;
+ if (ncl == scl) return 0; /* No free cluster */
+ }
+
+ res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
+ if (res == FR_OK && clst != 0) {
+ res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
+ }
+ if (res == FR_OK) {
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag |= 1;
+ }
+ } else {
+ ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
+ }
+
+ return ncl; /* Return new cluster number or error code */
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Convert offset into cluster with link map table */
+/*-----------------------------------------------------------------------*/
+
+#if _USE_FASTSEEK
+static
+DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
+ FIL* fp, /* Pointer to the file object */
+ DWORD ofs /* File offset to be converted to cluster# */
+)
+{
+ DWORD cl, ncl, *tbl;
+
+
+ tbl = fp->cltbl + 1; /* Top of CLMT */
+ cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
+ for (;;) {
+ ncl = *tbl++; /* Number of cluters in the fragment */
+ if (!ncl) return 0; /* End of table? (error) */
+ if (cl < ncl) break; /* In this fragment? */
+ cl -= ncl; tbl++; /* Next fragment */
+ }
+ return cl + *tbl; /* Return the cluster number */
+}
+#endif /* _USE_FASTSEEK */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Set directory index */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS_DIR* dp, /* Pointer to directory object */
+ UINT idx /* Index of directory table */
+)
+{
+ DWORD clst, sect;
+ UINT ic;
+
+
+ dp->index = (WORD)idx; /* Current index */
+ clst = dp->sclust; /* Table start cluster (0:root) */
+ if (clst == 1 || clst >= dp->fs->n_fatent) /* Check start cluster range */
+ return FR_INT_ERR;
+ if (!clst && dp->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
+ clst = dp->fs->dirbase;
+
+ if (clst == 0) { /* Static table (root-directory in FAT12/16) */
+ if (idx >= dp->fs->n_rootdir) /* Is index out of range? */
+ return FR_INT_ERR;
+ sect = dp->fs->dirbase;
+ }
+ else { /* Dynamic table (root-directory in FAT32 or sub-directory) */
+ ic = SS(dp->fs) / SZ_DIRE * dp->fs->csize; /* Entries per cluster */
+ while (idx >= ic) { /* Follow cluster chain */
+ clst = get_fat(dp->fs, clst); /* Get next cluster */
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+ if (clst < 2 || clst >= dp->fs->n_fatent) /* Reached to end of table or internal error */
+ return FR_INT_ERR;
+ idx -= ic;
+ }
+ sect = clust2sect(dp->fs, clst);
+ }
+ dp->clust = clst; /* Current cluster# */
+ if (!sect) return FR_INT_ERR;
+ dp->sect = sect + idx / (SS(dp->fs) / SZ_DIRE); /* Sector# of the directory entry */
+ dp->dir = dp->fs->win + (idx % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Ptr to the entry in the sector */
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory table index next */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
+ FATFS_DIR* dp, /* Pointer to the directory object */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
+)
+{
+ DWORD clst;
+ UINT i;
+#if !_FS_READONLY
+ UINT c;
+#endif
+
+
+ i = dp->index + 1;
+ if (!(i & 0xFFFF) || !dp->sect) /* Report EOT when index has reached 65535 */
+ return FR_NO_FILE;
+
+ if (!(i % (SS(dp->fs) / SZ_DIRE))) { /* Sector changed? */
+ dp->sect++; /* Next sector */
+
+ if (!dp->clust) { /* Static table */
+ if (i >= dp->fs->n_rootdir) /* Report EOT if it reached end of static table */
+ return FR_NO_FILE;
+ }
+ else { /* Dynamic table */
+ if (((i / (SS(dp->fs) / SZ_DIRE)) & (dp->fs->csize - 1)) == 0) { /* Cluster changed? */
+ clst = get_fat(dp->fs, dp->clust); /* Get next cluster */
+ if (clst <= 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */
+#if !_FS_READONLY
+ if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT */
+ clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */
+ if (clst == 0) return FR_DENIED; /* No free cluster */
+ if (clst == 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ /* Clean-up stretched table */
+ if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */
+ mem_set(dp->fs->win, 0, SS(dp->fs)); /* Clear window buffer */
+ dp->fs->winsect = clust2sect(dp->fs, clst); /* Cluster start sector */
+ for (c = 0; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */
+ dp->fs->wflag = 1;
+ if (sync_window(dp->fs)) return FR_DISK_ERR;
+ dp->fs->winsect++;
+ }
+ dp->fs->winsect -= c; /* Rewind window offset */
+#else
+ if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT (this is to suppress warning) */
+ return FR_NO_FILE; /* Report EOT */
+#endif
+ }
+ dp->clust = clst; /* Initialize data for new cluster */
+ dp->sect = clust2sect(dp->fs, clst);
+ }
+ }
+ }
+
+ dp->index = (WORD)i; /* Current index */
+ dp->dir = dp->fs->win + (i % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Current entry in the window */
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Reserve directory entry */
+/*-----------------------------------------------------------------------*/
+
+#if !_FS_READONLY
+static
+FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS_DIR* dp, /* Pointer to the directory object */
+ UINT nent /* Number of contiguous entries to allocate (1-21) */
+)
+{
+ FRESULT res;
+ UINT n;
+
+
+ res = dir_sdi(dp, 0);
+ if (res == FR_OK) {
+ n = 0;
+ do {
+ res = move_window(dp->fs, dp->sect);
+ if (res != FR_OK) break;
+ if (dp->dir[0] == DDEM || dp->dir[0] == 0) { /* Is it a free entry? */
+ if (++n == nent) break; /* A block of contiguous free entries is found */
+ } else {
+ n = 0; /* Not a blank entry. Restart to search */
+ }
+ res = dir_next(dp, 1); /* Next entry with table stretch enabled */
+ } while (res == FR_OK);
+ }
+ if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Load/Store start cluster number */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
+ FATFS* fs, /* Pointer to the fs object */
+ const BYTE* dir /* Pointer to the SFN entry */
+)
+{
+ DWORD cl;
+
+ cl = LD_WORD(dir + DIR_FstClusLO);
+ if (fs->fs_type == FS_FAT32)
+ cl |= (DWORD)LD_WORD(dir + DIR_FstClusHI) << 16;
+
+ return cl;
+}
+
+
+#if !_FS_READONLY
+static
+void st_clust (
+ BYTE* dir, /* Pointer to the SFN entry */
+ DWORD cl /* Value to be set */
+)
+{
+ ST_WORD(dir + DIR_FstClusLO, cl);
+ ST_WORD(dir + DIR_FstClusHI, cl >> 16);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
+
+
+static
+int cmp_lfn ( /* 1:matched, 0:not matched */
+ WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
+ BYTE* dir /* Pointer to the directory entry containing the part of LFN */
+)
+{
+ UINT i, s;
+ WCHAR wc, uc;
+
+
+ if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
+
+ i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
+
+ for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
+ uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
+ if (wc) {
+ if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) /* Compare it */
+ return 0; /* Not matched */
+ wc = uc;
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ }
+
+ if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ return 0;
+
+ return 1; /* The part of LFN matched */
+}
+
+
+
+static
+int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
+ WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
+ BYTE* dir /* Pointer to the LFN entry */
+)
+{
+ UINT i, s;
+ WCHAR wc, uc;
+
+
+ if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
+
+ i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
+
+ for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
+ uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
+ if (wc) {
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ }
+
+ if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i] = 0;
+ }
+
+ return 1; /* The part of LFN is valid */
+}
+
+
+#if !_FS_READONLY
+static
+void fit_lfn (
+ const WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
+ BYTE* dir, /* Pointer to the LFN entry to be processed */
+ BYTE ord, /* LFN order (1-20) */
+ BYTE sum /* Checksum of the corresponding SFN */
+)
+{
+ UINT i, s;
+ WCHAR wc;
+
+
+ dir[LDIR_Chksum] = sum; /* Set checksum */
+ dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
+ dir[LDIR_Type] = 0;
+ ST_WORD(dir + LDIR_FstClusLO, 0);
+
+ i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
+ s = wc = 0;
+ do {
+ if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective character */
+ ST_WORD(dir+LfnOfs[s], wc); /* Put it */
+ if (!wc) wc = 0xFFFF; /* Padding characters following last character */
+ } while (++s < 13);
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLEF; /* Bottom LFN part is the start of LFN sequence */
+ dir[LDIR_Ord] = ord; /* Set the LFN order */
+}
+
+#endif
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create numbered name */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+void gen_numname (
+ BYTE* dst, /* Pointer to the buffer to store numbered SFN */
+ const BYTE* src, /* Pointer to SFN */
+ const WCHAR* lfn, /* Pointer to LFN */
+ UINT seq /* Sequence number */
+)
+{
+ BYTE ns[8], c;
+ UINT i, j;
+ WCHAR wc;
+ DWORD sr;
+
+
+ mem_cpy(dst, src, 11);
+
+ if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
+ sr = seq;
+ while (*lfn) { /* Create a CRC */
+ wc = *lfn++;
+ for (i = 0; i < 16; i++) {
+ sr = (sr << 1) + (wc & 1);
+ wc >>= 1;
+ if (sr & 0x10000) sr ^= 0x11021;
+ }
+ }
+ seq = (UINT)sr;
+ }
+
+ /* itoa (hexdecimal) */
+ i = 7;
+ do {
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
+ ns[i] = '~';
+
+ /* Append the number */
+ for (j = 0; j < i && dst[j] != ' '; j++) {
+ if (IsDBCS1(dst[j])) {
+ if (j == i - 1) break;
+ j++;
+ }
+ }
+ do {
+ dst[j++] = (i < 8) ? ns[i++] : ' ';
+ } while (j < 8);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Calculate checksum of an SFN entry */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+BYTE sum_sfn (
+ const BYTE* dir /* Pointer to the SFN entry */
+)
+{
+ BYTE sum = 0;
+ UINT n = 11;
+
+ do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+ return sum;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
+ FATFS_DIR* dp /* Pointer to the directory object linked to the file name */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord, sum;
+#endif
+
+ res = dir_sdi(dp, 0); /* Rewind directory object */
+ if (res != FR_OK) return res;
+
+#if _USE_LFN
+ ord = sum = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+#endif
+ do {
+ res = move_window(dp->fs, dp->sect);
+ if (res != FR_OK) break;
+ dir = dp->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (dp->lfn) {
+ if (c & LLEF) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= ~LLEF; ord = c; /* LFN start order */
+ dp->lfn_idx = dp->index; /* Start index of LFN */
+ }
+ /* Check validity of the LFN entry and compare it with given name */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
+ }
+ } else { /* An SFN entry is found */
+ if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
+ if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break; /* SFN matched? */
+ ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+ }
+ }
+#else /* Non LFN configuration */
+ if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dp, 0); /* Next entry */
+ } while (res == FR_OK);
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2
+static
+FRESULT dir_read (
+ FATFS_DIR* dp, /* Pointer to the directory object */
+ int vol /* Filtered by 0:file/directory or 1:volume label */
+)
+{
+ FRESULT res;
+ BYTE a, c, *dir;
+#if _USE_LFN
+ BYTE ord = 0xFF, sum = 0xFF;
+#endif
+
+ res = FR_NO_FILE;
+ while (dp->sect) {
+ res = move_window(dp->fs, dp->sect);
+ if (res != FR_OK) break;
+ dir = dp->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+ a = dir[DIR_Attr] & AM_MASK;
+#if _USE_LFN /* LFN configuration */
+ if (c == DDEM || (!_FS_RPATH && c == '.') || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (c & LLEF) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= ~LLEF; ord = c;
+ dp->lfn_idx = dp->index;
+ }
+ /* Check LFN validity and capture it */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
+ } else { /* An SFN entry is found */
+ if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
+ dp->lfn_idx = 0xFFFF; /* It has no LFN. */
+ break;
+ }
+ }
+#else /* Non LFN configuration */
+ if (c != DDEM && (_FS_RPATH || c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dp, 0); /* Next entry */
+ if (res != FR_OK) break;
+ }
+
+ if (res != FR_OK) dp->sect = 0;
+
+ return res;
+}
+#endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
+ FATFS_DIR* dp /* Target directory with object name to be created */
+)
+{
+ FRESULT res;
+#if _USE_LFN /* LFN configuration */
+ UINT n, nent;
+ BYTE sn[12], *fn, sum;
+ WCHAR *lfn;
+
+
+ fn = dp->fn; lfn = dp->lfn;
+ mem_cpy(sn, fn, 12);
+
+ if (_FS_RPATH && (sn[NSFLAG] & NS_DOT)) /* Cannot create dot entry */
+ return FR_INVALID_NAME;
+
+ if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
+ fn[NSFLAG] = 0; dp->lfn = 0; /* Find only SFN */
+ for (n = 1; n < 100; n++) {
+ gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
+ res = dir_find(dp); /* Check if the name collides with existing SFN */
+ if (res != FR_OK) break;
+ }
+ if (n == 100) return FR_DENIED; /* Abort if too many collisions */
+ if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
+ fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;
+ }
+
+ if (sn[NSFLAG] & NS_LFN) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */
+ for (n = 0; lfn[n]; n++) ;
+ nent = (n + 25) / 13;
+ } else { /* Otherwise allocate an entry for an SFN */
+ nent = 1;
+ }
+ res = dir_alloc(dp, nent); /* Allocate entries */
+
+ if (res == FR_OK && --nent) { /* Set LFN entry if needed */
+ res = dir_sdi(dp, dp->index - nent);
+ if (res == FR_OK) {
+ sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
+ do { /* Store LFN entries in bottom first */
+ res = move_window(dp->fs, dp->sect);
+ if (res != FR_OK) break;
+ fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);
+ dp->fs->wflag = 1;
+ res = dir_next(dp, 0); /* Next entry */
+ } while (res == FR_OK && --nent);
+ }
+ }
+#else /* Non LFN configuration */
+ res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
+#endif
+
+ if (res == FR_OK) { /* Set SFN entry */
+ res = move_window(dp->fs, dp->sect);
+ if (res == FR_OK) {
+ mem_set(dp->dir, 0, SZ_DIRE); /* Clean the entry */
+ mem_cpy(dp->dir, dp->fn, 11); /* Put SFN */
+#if _USE_LFN
+ dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
+#endif
+ dp->fs->wflag = 1;
+ }
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY && !_FS_MINIMIZE
+static
+FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
+ FATFS_DIR* dp /* Directory object pointing the entry to be removed */
+)
+{
+ FRESULT res;
+#if _USE_LFN /* LFN configuration */
+ UINT i;
+
+ i = dp->index; /* SFN index */
+ res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx); /* Goto the SFN or top of the LFN entries */
+ if (res == FR_OK) {
+ do {
+ res = move_window(dp->fs, dp->sect);
+ if (res != FR_OK) break;
+ mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
+ *dp->dir = DDEM;
+ dp->fs->wflag = 1;
+ if (dp->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
+ res = dir_next(dp, 0); /* Next entry */
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dp, dp->index);
+ if (res == FR_OK) {
+ res = move_window(dp->fs, dp->sect);
+ if (res == FR_OK) {
+ mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
+ *dp->dir = DDEM;
+ dp->fs->wflag = 1;
+ }
+ }
+#endif
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
+static
+void get_fileinfo ( /* No return code */
+ FATFS_DIR* dp, /* Pointer to the directory object */
+ FILINFO* fno /* Pointer to the file information to be filled */
+)
+{
+ UINT i;
+ TCHAR *p, c;
+ BYTE *dir;
+#if _USE_LFN
+ WCHAR w, *lfn;
+#endif
+
+ p = fno->fname;
+ if (dp->sect) { /* Get SFN */
+ dir = dp->dir;
+ i = 0;
+ while (i < 11) { /* Copy name body and extension */
+ c = (TCHAR)dir[i++];
+ if (c == ' ') continue; /* Skip padding spaces */
+ if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
+ if (i == 9) *p++ = '.'; /* Insert a . if extension is exist */
+#if _USE_LFN
+ if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
+ c += 0x20; /* To lower */
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))
+ c = c << 8 | dir[i++];
+ c = ff_convert(c, 1); /* OEM -> Unicode */
+ if (!c) c = '?';
+#endif
+#endif
+ *p++ = c;
+ }
+ fno->fattrib = dir[DIR_Attr]; /* Attribute */
+ fno->fsize = LD_DWORD(dir + DIR_FileSize); /* Size */
+ fno->fdate = LD_WORD(dir + DIR_WrtDate); /* Date */
+ fno->ftime = LD_WORD(dir + DIR_WrtTime); /* Time */
+ }
+ *p = 0; /* Terminate SFN string by a \0 */
+
+#if _USE_LFN
+ if (fno->lfname) {
+ i = 0; p = fno->lfname;
+ if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) { /* Get LFN if available */
+ lfn = dp->lfn;
+ while ((w = *lfn++) != 0) { /* Get an LFN character */
+#if !_LFN_UNICODE
+ w = ff_convert(w, 0); /* Unicode -> OEM */
+ if (!w) { i = 0; break; } /* No LFN if it could not be converted */
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
+ p[i++] = (TCHAR)(w >> 8);
+#endif
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */
+ p[i++] = (TCHAR)w;
+ }
+ }
+ p[i] = 0; /* Terminate LFN string by a \0 */
+ }
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pattern matching */
+/*-----------------------------------------------------------------------*/
+#if _USE_FIND && _FS_MINIMIZE <= 1
+static
+WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */
+ const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */
+)
+{
+ WCHAR chr;
+
+#if !_LFN_UNICODE
+ chr = (BYTE)*(*ptr)++; /* Get a byte */
+ if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
+ if (IsDBCS1(chr) && IsDBCS2(**ptr)) /* Get DBC 2nd byte if needed */
+ chr = chr << 8 | (BYTE)*(*ptr)++;
+#ifdef _EXCVT
+ if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
+#endif
+#else
+ chr = ff_wtoupper(*(*ptr)++); /* Get a word and to upper */
+#endif
+ return chr;
+}
+
+
+static
+int pattern_matching ( /* 0:mismatched, 1:matched */
+ const TCHAR* pat, /* Matching pattern */
+ const TCHAR* nam, /* String to be tested */
+ int skip, /* Number of pre-skip chars (number of ?s) */
+ int inf /* Infinite search (* specified) */
+)
+{
+ const TCHAR *pp, *np;
+ WCHAR pc, nc;
+ int nm, nx;
+
+
+ while (skip--) { /* Pre-skip name chars */
+ if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
+ }
+ if (!*pat && inf) return 1; /* (short circuit) */
+
+ do {
+ pp = pat; np = nam; /* Top of pattern and name to match */
+ for (;;) {
+ if (*pp == '?' || *pp == '*') { /* Wildcard? */
+ nm = nx = 0;
+ do { /* Analyze the wildcard chars */
+ if (*pp++ == '?') nm++; else nx = 1;
+ } while (*pp == '?' || *pp == '*');
+ if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
+ nc = *np; break; /* Branch mismatched */
+ }
+ pc = get_achar(&pp); /* Get a pattern char */
+ nc = get_achar(&np); /* Get a name char */
+ if (pc != nc) break; /* Branch mismatched? */
+ if (!pc) return 1; /* Branch matched? (matched at end of both strings) */
+ }
+ get_achar(&nam); /* nam++ */
+ } while (inf && nc); /* Retry until end of name if infinite search is specified */
+
+ return 0;
+}
+#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a top segment and create the object name in directory form */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
+ FATFS_DIR* dp, /* Pointer to the directory object */
+ const TCHAR** path /* Pointer to pointer to the segment in the path string */
+)
+{
+#if _USE_LFN /* LFN configuration */
+ BYTE b, cf;
+ WCHAR w, *lfn;
+ UINT i, ni, si, di;
+ const TCHAR *p;
+
+ /* Create LFN in Unicode */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
+ lfn = dp->lfn;
+ si = di = 0;
+ for (;;) {
+ w = p[si++]; /* Get a character */
+ if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
+ if (di >= _MAX_LFN) /* Reject too long name */
+ return FR_INVALID_NAME;
+#if !_LFN_UNICODE
+ w &= 0xFF;
+ if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ b = (BYTE)p[si++]; /* Get 2nd byte */
+ w = (w << 8) + b; /* Create a DBC */
+ if (!IsDBCS2(b))
+ return FR_INVALID_NAME; /* Reject invalid sequence */
+ }
+ w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
+ if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+ if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */
+ return FR_INVALID_NAME;
+ lfn[di++] = w; /* Store the Unicode character */
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+#if _FS_RPATH
+ if ((di == 1 && lfn[di - 1] == '.') ||
+ (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot entry? */
+ lfn[di] = 0;
+ for (i = 0; i < 11; i++) /* Create dot name for SFN entry */
+ dp->fn[i] = (i < di) ? '.' : ' ';
+ dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
+ return FR_OK;
+ }
+#endif
+ while (di) { /* Snip off trailing spaces and dots if exist */
+ w = lfn[di - 1];
+ if (w != ' ' && w != '.') break;
+ di--;
+ }
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
+ lfn[di] = 0; /* LFN is created */
+
+ /* Create SFN in directory form */
+ mem_set(dp->fn, ' ', 11);
+ for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
+ if (si) cf |= NS_LOSS | NS_LFN;
+ while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
+
+ b = i = 0; ni = 8;
+ for (;;) {
+ w = lfn[si++]; /* Get an LFN character */
+ if (!w) break; /* Break on end of the LFN */
+ if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
+ cf |= NS_LOSS | NS_LFN; continue;
+ }
+
+ if (i >= ni || si == di) { /* Extension or end of SFN */
+ if (ni == 11) { /* Long extension */
+ cf |= NS_LOSS | NS_LFN; break;
+ }
+ if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
+ if (si > di) break; /* No extension */
+ si = di; i = 8; ni = 11; /* Enter extension section */
+ b <<= 2; continue;
+ }
+
+ if (w >= 0x80) { /* Non ASCII character */
+#ifdef _EXCVT
+ w = ff_convert(w, 0); /* Unicode -> OEM code */
+ if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
+#else
+ w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
+#endif
+ cf |= NS_LFN; /* Force create LFN entry */
+ }
+
+ if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */
+ if (i >= ni - 1) {
+ cf |= NS_LOSS | NS_LFN; i = ni; continue;
+ }
+ dp->fn[i++] = (BYTE)(w >> 8);
+ } else { /* SBC */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
+ } else {
+ if (IsUpper(w)) { /* ASCII large capital */
+ b |= 2;
+ } else {
+ if (IsLower(w)) { /* ASCII small capital */
+ b |= 1; w -= 0x20;
+ }
+ }
+ }
+ }
+ dp->fn[i++] = (BYTE)w;
+ }
+
+ if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
+ cf |= NS_LFN;
+ if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
+ if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
+ if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
+ }
+
+ dp->fn[NSFLAG] = cf; /* SFN is created */
+
+ return FR_OK;
+
+
+#else /* Non-LFN configuration */
+ BYTE b, c, d, *sfn;
+ UINT ni, si, i;
+ const char *p;
+
+ /* Create file name in directory form */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Skip duplicated separator */
+ sfn = dp->fn;
+ mem_set(sfn, ' ', 11);
+ si = i = b = 0; ni = 8;
+#if _FS_RPATH
+ if (p[si] == '.') { /* Is this a dot entry? */
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c != '.' || si >= 3) break;
+ sfn[i++] = c;
+ }
+ if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+ *path = &p[si]; /* Return pointer to the next segment */
+ sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
+ return FR_OK;
+ }
+#endif
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
+ if (c == '.' || i >= ni) {
+ if (ni != 8 || c != '.') return FR_INVALID_NAME;
+ i = 8; ni = 11;
+ b <<= 2; continue;
+ }
+ if (c >= 0x80) { /* Extended character? */
+ b |= 3; /* Eliminate NT flag */
+#ifdef _EXCVT
+ c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
+#else
+#if !_DF1S
+ return FR_INVALID_NAME; /* Reject extended characters (ASCII cfg) */
+#endif
+#endif
+ }
+ if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
+ return FR_INVALID_NAME;
+ sfn[i++] = c;
+ sfn[i++] = d;
+ } else { /* SBC */
+ if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
+ return FR_INVALID_NAME;
+ if (IsUpper(c)) { /* ASCII large capital? */
+ b |= 2;
+ } else {
+ if (IsLower(c)) { /* ASCII small capital? */
+ b |= 1; c -= 0x20;
+ }
+ }
+ sfn[i++] = c;
+ }
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
+ if (sfn[0] == DDEM) sfn[0] = RDDEM; /* When first character collides with DDEM, replace it with RDDEM */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
+ if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
+
+ sfn[NSFLAG] = c; /* Store NT flag, File name is created */
+
+ return FR_OK;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
+ FATFS_DIR* dp, /* Directory object to return last directory and found object */
+ const TCHAR* path /* Full-path string to find a file or directory */
+)
+{
+ FRESULT res;
+ BYTE *dir, ns;
+
+
+#if _FS_RPATH
+ if (*path == '/' || *path == '\\') { /* There is a heading separator */
+ path++; dp->sclust = 0; /* Strip it and start from the root directory */
+ } else { /* No heading separator */
+ dp->sclust = dp->fs->cdir; /* Start from the current directory */
+ }
+#else
+ if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
+ path++;
+ dp->sclust = 0; /* Always start from the root directory */
+#endif
+
+ if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
+ res = dir_sdi(dp, 0);
+ dp->dir = 0;
+ } else { /* Follow path */
+ for (;;) {
+ res = create_name(dp, &path); /* Get a segment name of the path */
+ if (res != FR_OK) break;
+ res = dir_find(dp); /* Find an object with the sagment name */
+ ns = dp->fn[NSFLAG];
+ if (res != FR_OK) { /* Failed to find the object */
+ if (res == FR_NO_FILE) { /* Object is not found */
+ if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, */
+ dp->sclust = 0; dp->dir = 0; /* it is the root directory and stay there */
+ if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
+ res = FR_OK; /* Ended at the root directroy. Function completed. */
+ } else { /* Could not find the object */
+ if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
+ }
+ }
+ break;
+ }
+ if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
+ dir = dp->dir; /* Follow the sub-directory */
+ if (!(dir[DIR_Attr] & AM_DIR)) { /* It is not a sub-directory and cannot follow */
+ res = FR_NO_PATH; break;
+ }
+ dp->sclust = ld_clust(dp->fs, dir);
+ }
+ }
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get logical drive number from path name */
+/*-----------------------------------------------------------------------*/
+
+static
+int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
+ const TCHAR** path /* Pointer to pointer to the path name */
+)
+{
+ const TCHAR *tp, *tt;
+ UINT i;
+ int vol = -1;
+#if _STR_VOLUME_ID /* Find string drive id */
+ static const char* const str[] = {_VOLUME_STRS};
+ const char *sp;
+ char c;
+ TCHAR tc;
+#endif
+
+
+ if (*path) { /* If the pointer is not a null */
+ for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */
+ if (*tt == ':') { /* If a ':' is exist in the path name */
+ tp = *path;
+ i = *tp++ - '0';
+ if (i < 10 && tp == tt) { /* Is there a numeric drive id? */
+ if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
+ vol = (int)i;
+ *path = ++tt;
+ }
+ }
+#if _STR_VOLUME_ID
+ else { /* No numeric drive number, find string drive id */
+ i = 0; tt++;
+ do {
+ sp = str[i]; tp = *path;
+ do { /* Compare a string drive id with path name */
+ c = *sp++; tc = *tp++;
+ if (IsLower(tc)) tc -= 0x20;
+ } while (c && (TCHAR)c == tc);
+ } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */
+ if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
+ vol = (int)i;
+ *path = tt;
+ }
+ }
+#endif
+ return vol;
+ }
+#if _FS_RPATH && _VOLUMES >= 2
+ vol = CurrVol; /* Current drive */
+#else
+ vol = 0; /* Drive 0 */
+#endif
+ }
+ return vol;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load a sector and check if it is an FAT boot sector */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs ( /* 0:Valid FAT-BS, 1:Valid BS but not FAT, 2:Not a BS, 3:Disk error */
+ FATFS* fs, /* File system object */
+ DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
+)
+{
+ fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
+ if (move_window(fs, sect) != FR_OK) /* Load boot record */
+ return 3;
+
+ if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
+ return 2;
+
+ if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+ return 0;
+ if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+ return 0;
+
+ return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Find logical drive and check if the volume is mounted */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
+ FATFS** rfs, /* Pointer to pointer to the found file system object */
+ const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
+ BYTE wmode /* !=0: Check write protection for write access */
+)
+{
+ BYTE fmt, *pt;
+ int vol;
+ DSTATUS stat;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
+ WORD nrsv;
+ FATFS *fs;
+ UINT i;
+
+
+ /* Get logical drive number from the path name */
+ *rfs = 0;
+ vol = get_ldnumber(path);
+ if (vol < 0) return FR_INVALID_DRIVE;
+
+ /* Check if the file system object is valid or not */
+ fs = FatFs[vol]; /* Get pointer to the file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+
+ ENTER_FF(fs); /* Lock the volume */
+ *rfs = fs; /* Return pointer to the file system object */
+
+ if (fs->fs_type) { /* If the volume has been mounted */
+ stat = disk_status(fs->drv);
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
+ if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
+ return FR_WRITE_PROTECTED;
+ return FR_OK; /* The file system object is valid */
+ }
+ }
+
+ /* The file system object is not valid. */
+ /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
+
+ fs->fs_type = 0; /* Clear the file system object */
+ fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize the physical drive */
+ if (stat & STA_NOINIT) /* Check if the initialization succeeded */
+ return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
+ if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
+ return FR_WRITE_PROTECTED;
+#if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
+ || SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;
+#endif
+ /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
+ bsect = 0;
+ fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */
+ if (fmt == 1 || (!fmt && (LD2PT(vol)))) { /* Not an FAT boot sector or forced partition number */
+ for (i = 0; i < 4; i++) { /* Get partition offset */
+ pt = fs->win + MBR_Table + i * SZ_PTE;
+ br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;
+ }
+ i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
+ if (i) i--;
+ do { /* Find an FAT volume */
+ bsect = br[i];
+ fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */
+ } while (!LD2PT(vol) && fmt && ++i < 4);
+ }
+ if (fmt == 3) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+
+ /* An FAT volume is found. Following code initializes the file system object */
+
+ if (LD_WORD(fs->win + BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
+ return FR_NO_FILESYSTEM;
+
+ fasize = LD_WORD(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
+ if (!fasize) fasize = LD_DWORD(fs->win + BPB_FATSz32);
+ fs->fsize = fasize;
+
+ fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
+ if (fs->n_fats != 1 && fs->n_fats != 2) /* (Must be 1 or 2) */
+ return FR_NO_FILESYSTEM;
+ fasize *= fs->n_fats; /* Number of sectors for FAT area */
+
+ fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
+ if (!fs->csize || (fs->csize & (fs->csize - 1))) /* (Must be power of 2) */
+ return FR_NO_FILESYSTEM;
+
+ fs->n_rootdir = LD_WORD(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / SZ_DIRE)) /* (Must be sector aligned) */
+ return FR_NO_FILESYSTEM;
+
+ tsect = LD_WORD(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
+ if (!tsect) tsect = LD_DWORD(fs->win + BPB_TotSec32);
+
+ nrsv = LD_WORD(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
+ if (!nrsv) return FR_NO_FILESYSTEM; /* (Must not be 0) */
+
+ /* Determine the FAT sub type */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIRE); /* RSV + FAT + FATFS_DIR */
+ if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
+ if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ fmt = FS_FAT12;
+ if (nclst >= MIN_FAT16) fmt = FS_FAT16;
+ if (nclst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Boundaries and Limits */
+ fs->n_fatent = nclst + 2; /* Number of FAT entries */
+ fs->volbase = bsect; /* Volume start sector */
+ fs->fatbase = bsect + nrsv; /* FAT start sector */
+ fs->database = bsect + sysect; /* Data start sector */
+ if (fmt == FS_FAT32) {
+ if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
+ fs->dirbase = LD_DWORD(fs->win + BPB_RootClus); /* Root directory start cluster */
+ szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
+ } else {
+ if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
+ fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
+ szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
+ fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+ }
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than the size needed) */
+ return FR_NO_FILESYSTEM;
+
+#if !_FS_READONLY
+ /* Initialize cluster allocation information */
+ fs->last_clust = fs->free_clust = 0xFFFFFFFF;
+
+ /* Get fsinfo if available */
+ fs->fsi_flag = 0x80;
+#if (_FS_NOFSINFO & 3) != 3
+ if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo == 1 */
+ && LD_WORD(fs->win + BPB_FSInfo) == 1
+ && move_window(fs, bsect + 1) == FR_OK)
+ {
+ fs->fsi_flag = 0;
+ if (LD_WORD(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */
+ && LD_DWORD(fs->win + FSI_LeadSig) == 0x41615252
+ && LD_DWORD(fs->win + FSI_StrucSig) == 0x61417272)
+ {
+#if (_FS_NOFSINFO & 1) == 0
+ fs->free_clust = LD_DWORD(fs->win + FSI_Free_Count);
+#endif
+#if (_FS_NOFSINFO & 2) == 0
+ fs->last_clust = LD_DWORD(fs->win + FSI_Nxt_Free);
+#endif
+ }
+ }
+#endif
+#endif
+ fs->fs_type = fmt; /* FAT sub-type */
+ fs->id = ++Fsid; /* File system mount ID */
+#if _FS_RPATH
+ fs->cdir = 0; /* Set current directory to root */
+#endif
+#if _FS_LOCK /* Clear file lock semaphores */
+ clear_lock(fs);
+#endif
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/directory object is valid or not */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
+ void* obj /* Pointer to the object FIL/FATFS_DIR to check validity */
+)
+{
+ FIL *fil = (FIL*)obj; /* Assuming offset of .fs and .id in the FIL/FATFS_DIR structure is identical */
+
+
+ if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id || (disk_status(fil->fs->drv) & STA_NOINIT))
+ return FR_INVALID_OBJECT;
+
+ ENTER_FF(fil->fs); /* Lock file system */
+
+ return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Public Functions
+
+---------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Logical Drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+ FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/
+ const TCHAR* path, /* Logical drive number to be mounted/unmounted */
+ BYTE opt /* 0:Do not mount (delayed mount), 1:Mount immediately */
+)
+{
+ FATFS *cfs;
+ int vol;
+ FRESULT res;
+ const TCHAR *rp = path;
+
+
+ vol = get_ldnumber(&rp);
+ if (vol < 0) return FR_INVALID_DRIVE;
+ cfs = FatFs[vol]; /* Pointer to fs object */
+
+ if (cfs) {
+#if _FS_LOCK
+ clear_lock(cfs);
+#endif
+#if _FS_REENTRANT /* Discard sync object of the current volume */
+ if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
+#endif
+ cfs->fs_type = 0; /* Clear old fs object */
+ }
+
+ if (fs) {
+ fs->fs_type = 0; /* Clear new fs object */
+#if _FS_REENTRANT /* Create sync object for the new volume */
+ if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
+#endif
+ }
+ FatFs[vol] = fs; /* Register new fs object */
+
+ if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */
+
+ res = find_volume(&fs, &path, 0); /* Force mounted the volume */
+ LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+ FIL* fp, /* Pointer to the blank file object */
+ const TCHAR* path, /* Pointer to the file name */
+ BYTE mode /* Access mode and file open mode flags */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ BYTE *dir;
+ DEFINE_NAMEBUF;
+#if !_FS_READONLY
+ DWORD dw, cl;
+#endif
+
+
+ if (!fp) return FR_INVALID_OBJECT;
+ fp->fs = 0; /* Clear file object */
+
+ /* Get logical drive number */
+#if !_FS_READONLY
+ mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
+ res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));
+#else
+ mode &= FA_READ;
+ res = find_volume(&dj.fs, &path, 0);
+#endif
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
+#if !_FS_READONLY /* R/W configuration */
+ if (res == FR_OK) {
+ if (!dir) /* Default directory itself */
+ res = FR_INVALID_NAME;
+#if _FS_LOCK
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+#endif
+ }
+ /* Create or Open a file */
+ if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_LOCK
+ res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
+ res = dir_register(&dj);
+#endif
+ mode |= FA_CREATE_ALWAYS; /* File is created */
+ dir = dj.dir; /* New entry */
+ }
+ else { /* Any object is already existing */
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or FATFS_DIR) */
+ res = FR_DENIED;
+ } else {
+ if (mode & FA_CREATE_NEW) /* Cannot create as new file */
+ res = FR_EXIST;
+ }
+ }
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = GET_FATTIME();
+ ST_DWORD(dir + DIR_CrtTime, dw);/* Set created time */
+ ST_DWORD(dir + DIR_WrtTime, dw);/* Set modified time */
+ dir[DIR_Attr] = 0; /* Reset attribute */
+ ST_DWORD(dir + DIR_FileSize, 0);/* Reset file size */
+ cl = ld_clust(dj.fs, dir); /* Get cluster chain */
+ st_clust(dir, 0); /* Reset cluster */
+ dj.fs->wflag = 1;
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
+ }
+ }
+ }
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Following succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
+ mode |= FA__WRITTEN;
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_LOCK
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#endif
+ }
+
+#else /* R/O configuration */
+ if (res == FR_OK) { /* Follow succeeded */
+ dir = dj.dir;
+ if (!dir) { /* Current directory itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
+ }
+#endif
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->err = 0; /* Clear error flag */
+ fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
+ fp->fsize = LD_DWORD(dir + DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* Normal seek mode */
+#endif
+ fp->fs = dj.fs; /* Validate file object */
+ fp->id = fp->fs->id;
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+ FIL* fp, /* Pointer to the file object */
+ void* buff, /* Pointer to data buffer */
+ UINT btr, /* Number of bytes to read */
+ UINT* br /* Pointer to number of bytes read */
+)
+{
+ FRESULT res;
+ DWORD clst, sect, remain;
+ UINT rcnt, cc;
+ BYTE csect, *rbuff = (BYTE*)buff;
+
+
+ *br = 0; /* Clear read byte counter */
+
+ res = validate(fp); /* Check validity */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->err) /* Check error */
+ LEAVE_FF(fp->fs, (FRESULT)fp->err);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr; /* Repeat until all data read */
+ rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
+ }
+ if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ }
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if _FS_TINY
+ if (fp->fs->wflag && fp->fs->winsect - sect < cc)
+ mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
+#else
+ if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
+ mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
+#endif
+#endif
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if !_FS_TINY
+ if (fp->dsect != sect) { /* Load data sector if not in cache */
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
+ if (rcnt > btr) rcnt = btr;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#else
+ mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#endif
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+ FIL* fp, /* Pointer to the file object */
+ const void *buff, /* Pointer to the data to be written */
+ UINT btw, /* Number of bytes to write */
+ UINT* bw /* Pointer to number of bytes written */
+)
+{
+ FRESULT res;
+ DWORD clst, sect;
+ UINT wcnt, cc;
+ const BYTE *wbuff = (const BYTE*)buff;
+ BYTE csect;
+ bool need_sync = false;
+
+ *bw = 0; /* Clear write byte counter */
+
+ res = validate(fp); /* Check validity */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->err) /* Check error */
+ LEAVE_FF(fp->fs, (FRESULT)fp->err);
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ if (fp->fptr + btw < fp->fptr) btw = 0; /* File size cannot reach 4GB */
+
+ for ( ; btw; /* Repeat until all data written */
+ wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ if (clst == 0) /* When no cluster is allocated, */
+ clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
+ }
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ if (fp->sclust == 0) fp->sclust = clst; /* Set start cluster if the first write */
+
+#if FLUSH_ON_NEW_CLUSTER
+ // We do not need to flush for the first cluster
+ if (fp->fptr != 0) {
+ need_sync = true;
+ }
+#endif
+ }
+#if _FS_TINY
+ if (fp->fs->winsect == fp->dsect && sync_window(fp->fs)) /* Write-back sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+#else
+ if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if _FS_MINIMIZE <= 2
+#if _FS_TINY
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
+ mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->fs->wflag = 0;
+ }
+#else
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
+ mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+#endif
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+#if FLUSH_ON_NEW_SECTOR
+ need_sync = true;
+#endif
+ continue;
+ }
+#if _FS_TINY
+ if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
+ if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);
+ fp->fs->winsect = sect;
+ }
+#else
+ if (fp->dsect != sect) { /* Fill sector cache with file data */
+ if (fp->fptr < fp->fsize &&
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
+ if (wcnt > btw) wcnt = btw;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->fs->wflag = 1;
+#else
+ mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->flag |= FA__DIRTY;
+#endif
+ }
+
+ if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
+ fp->flag |= FA__WRITTEN; /* Set file change flag */
+
+ if (need_sync) {
+ f_sync (fp);
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+ FIL* fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD tm;
+ BYTE *dir;
+
+
+ res = validate(fp); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__WRITTEN) { /* Is there any change to the file? */
+#if !_FS_TINY
+ if (fp->flag & FA__DIRTY) { /* Write-back cached data if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ LEAVE_FF(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ /* Update the directory entry */
+ res = move_window(fp->fs, fp->dir_sect);
+ if (res == FR_OK) {
+ dir = fp->dir_ptr;
+ dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
+ ST_DWORD(dir + DIR_FileSize, fp->fsize); /* Update file size */
+ st_clust(dir, fp->sclust); /* Update start cluster */
+ tm = GET_FATTIME(); /* Update modified time */
+ ST_DWORD(dir + DIR_WrtTime, tm);
+ ST_WORD(dir + DIR_LstAccDate, 0);
+ fp->flag &= ~FA__WRITTEN;
+ fp->fs->wflag = 1;
+ res = sync_fs(fp->fs);
+ }
+ }
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+ FIL *fp /* Pointer to the file object to be closed */
+)
+{
+ FRESULT res;
+
+
+#if !_FS_READONLY
+ res = f_sync(fp); /* Flush cached data */
+ if (res == FR_OK)
+#endif
+ {
+ res = validate(fp); /* Lock volume */
+ if (res == FR_OK) {
+#if _FS_REENTRANT
+ FATFS *fs = fp->fs;
+#endif
+#if _FS_LOCK
+ res = dec_lock(fp->lockid); /* Decrement file open counter */
+ if (res == FR_OK)
+#endif
+ fp->fs = 0; /* Invalidate file object */
+#if _FS_REENTRANT
+ unlock_fs(fs, FR_OK); /* Unlock volume */
+#endif
+ }
+ }
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Current Directory or Current Drive, Get Current Directory */
+/*-----------------------------------------------------------------------*/
+
+#if _FS_RPATH >= 1
+#if _VOLUMES >= 2
+FRESULT f_chdrive (
+ const TCHAR* path /* Drive number */
+)
+{
+ int vol;
+
+
+ vol = get_ldnumber(&path);
+ if (vol < 0) return FR_INVALID_DRIVE;
+
+ CurrVol = (BYTE)vol;
+
+ return FR_OK;
+}
+#endif
+
+
+FRESULT f_chdir (
+ const TCHAR* path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ if (!dj.dir) {
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
+ } else {
+ if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = ld_clust(dj.fs, dj.dir);
+ else
+ res = FR_NO_PATH; /* Reached but a file */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+#if _FS_RPATH >= 2
+FRESULT f_getcwd (
+ TCHAR* buff, /* Pointer to the directory path */
+ UINT len /* Size of path */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ UINT i, n;
+ DWORD ccl;
+ TCHAR *tp;
+ FILINFO fno;
+ DEFINE_NAMEBUF;
+
+
+ *buff = 0;
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, (const TCHAR**)&buff, 0); /* Get current volume */
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ i = len; /* Bottom of buffer (directory stack base) */
+ dj.sclust = dj.fs->cdir; /* Start to follow upper directory from current directory */
+ while ((ccl = dj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
+ res = dir_sdi(&dj, 1); /* Get parent directory */
+ if (res != FR_OK) break;
+ res = dir_read(&dj, 0);
+ if (res != FR_OK) break;
+ dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent directory */
+ res = dir_sdi(&dj, 0);
+ if (res != FR_OK) break;
+ do { /* Find the entry links to the child directory */
+ res = dir_read(&dj, 0);
+ if (res != FR_OK) break;
+ if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
+ res = dir_next(&dj, 0);
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
+ if (res != FR_OK) break;
+#if _USE_LFN
+ fno.lfname = buff;
+ fno.lfsize = i;
+#endif
+ get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
+ tp = fno.fname;
+#if _USE_LFN
+ if (*buff) tp = buff;
+#endif
+ for (n = 0; tp[n]; n++) ;
+ if (i < n + 3) {
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ while (n) buff[--i] = tp[--n];
+ buff[--i] = '/';
+ }
+ tp = buff;
+ if (res == FR_OK) {
+#if _VOLUMES >= 2
+ *tp++ = '0' + CurrVol; /* Put drive number */
+ *tp++ = ':';
+#endif
+ if (i == len) { /* Root-directory */
+ *tp++ = '/';
+ } else { /* Sub-directroy */
+ do /* Add stacked path str */
+ *tp++ = buff[i++];
+ while (i < len);
+ }
+ }
+ *tp = 0;
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+#endif /* _FS_RPATH >= 2 */
+#endif /* _FS_RPATH >= 1 */
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+ FIL* fp, /* Pointer to the file object */
+ DWORD ofs /* File pointer from top of file */
+)
+{
+ FRESULT res;
+ DWORD clst, bcs, nsect, ifptr;
+#if _USE_FASTSEEK
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
+#endif
+
+
+ res = validate(fp); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->err) /* Check error */
+ LEAVE_FF(fp->fs, (FRESULT)fp->err);
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ if (ofs == CREATE_LINKMAP) { /* Create CLMT */
+ tbl = fp->cltbl;
+ tlen = *tbl++; ulen = 2; /* Given table size and required table size */
+ cl = fp->sclust; /* Top of the chain */
+ if (cl) {
+ do {
+ /* Get a fragment */
+ tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
+ do {
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ if (ulen <= tlen) { /* Store the length and top of the fragment */
+ *tbl++ = ncl; *tbl++ = tcl;
+ }
+ } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
+ }
+ *fp->cltbl = ulen; /* Number of items used */
+ if (ulen <= tlen)
+ *tbl = 0; /* Terminate table */
+ else
+ res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ fp->clust = clmt_clust(fp, ofs - 1);
+ dsc = clust2sect(fp->fs, fp->clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = dsc;
+ }
+ }
+ }
+ } else
+#endif
+
+ /* Normal Seek */
+ {
+ if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
+#if !_FS_READONLY
+ && !(fp->flag & FA_WRITE)
+#endif
+ ) ofs = fp->fsize;
+
+ ifptr = fp->fptr;
+ fp->fptr = nsect = 0;
+ if (ofs) {
+ bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
+ if (ifptr > 0 &&
+ (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+ fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
+ ofs -= fp->fptr;
+ clst = fp->clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->sclust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->sclust = clst;
+ }
+#endif
+ fp->clust = clst;
+ }
+ if (clst != 0) {
+ while (ofs > bcs) { /* Cluster following loop */
+#if !_FS_READONLY
+ if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
+ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
+ if (clst == 0) { /* When disk gets full, clip file size */
+ ofs = bcs; break;
+ }
+ } else
+#endif
+ clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
+ fp->clust = clst;
+ fp->fptr += bcs;
+ ofs -= bcs;
+ }
+ fp->fptr += ofs;
+ if (ofs % SS(fp->fs)) {
+ nsect = clust2sect(fp->fs, clst); /* Current sector */
+ if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+ nsect += ofs / SS(fp->fs);
+ }
+ }
+ }
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = nsect;
+ }
+#if !_FS_READONLY
+ if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
+ fp->fsize = fp->fptr;
+ fp->flag |= FA__WRITTEN;
+ }
+#endif
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directory Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+ FATFS_DIR* dp, /* Pointer to directory object to create */
+ const TCHAR* path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FATFS* fs;
+ DEFINE_NAMEBUF;
+
+
+ if (!dp) return FR_INVALID_OBJECT;
+
+ /* Get logical drive number */
+ res = find_volume(&fs, &path, 0);
+ if (res == FR_OK) {
+ dp->fs = fs;
+ INIT_BUF(*dp);
+ res = follow_path(dp, path); /* Follow the path to the directory */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ if (dp->dir) { /* It is not the origin directory itself */
+ if (dp->dir[DIR_Attr] & AM_DIR) /* The object is a sub directory */
+ dp->sclust = ld_clust(fs, dp->dir);
+ else /* The object is a file */
+ res = FR_NO_PATH;
+ }
+ if (res == FR_OK) {
+ dp->id = fs->id;
+ res = dir_sdi(dp, 0); /* Rewind directory */
+#if _FS_LOCK
+ if (res == FR_OK) {
+ if (dp->sclust) {
+ dp->lockid = inc_lock(dp, 0); /* Lock the sub directory */
+ if (!dp->lockid)
+ res = FR_TOO_MANY_OPEN_FILES;
+ } else {
+ dp->lockid = 0; /* Root directory need not to be locked */
+ }
+ }
+#endif
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+ if (res != FR_OK) dp->fs = 0; /* Invalidate the directory object if function faild */
+
+ LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_closedir (
+ FATFS_DIR *dp /* Pointer to the directory object to be closed */
+)
+{
+ FRESULT res;
+
+
+ res = validate(dp);
+ if (res == FR_OK) {
+#if _FS_REENTRANT
+ FATFS *fs = dp->fs;
+#endif
+#if _FS_LOCK
+ if (dp->lockid) /* Decrement sub-directory open counter */
+ res = dec_lock(dp->lockid);
+ if (res == FR_OK)
+#endif
+ dp->fs = 0; /* Invalidate directory object */
+#if _FS_REENTRANT
+ unlock_fs(fs, FR_OK); /* Unlock volume */
+#endif
+ }
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entries in Sequence */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+ FATFS_DIR* dp, /* Pointer to the open directory object */
+ FILINFO* fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ DEFINE_NAMEBUF;
+
+
+ res = validate(dp); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (!fno) {
+ res = dir_sdi(dp, 0); /* Rewind the directory object */
+ } else {
+ INIT_BUF(*dp);
+ res = dir_read(dp, 0); /* Read an item */
+ if (res == FR_NO_FILE) { /* Reached end of directory */
+ dp->sect = 0;
+ res = FR_OK;
+ }
+ if (res == FR_OK) { /* A valid entry is found */
+ get_fileinfo(dp, fno); /* Get the object information */
+ res = dir_next(dp, 0); /* Increment index for next */
+ if (res == FR_NO_FILE) {
+ dp->sect = 0;
+ res = FR_OK;
+ }
+ }
+ FREE_BUF();
+ }
+ }
+
+ LEAVE_FF(dp->fs, res);
+}
+
+
+
+#if _USE_FIND
+/*-----------------------------------------------------------------------*/
+/* Find next file */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_findnext (
+ FATFS_DIR* dp, /* Pointer to the open directory object */
+ FILINFO* fno /* Pointer to the file information structure */
+)
+{
+ FRESULT res;
+
+
+ for (;;) {
+ res = f_readdir(dp, fno); /* Get a directory item */
+ if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
+#if _USE_LFN
+ if (fno->lfname && pattern_matching(dp->pat, fno->lfname, 0, 0)) break; /* Test for LFN if exist */
+#endif
+ if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for SFN */
+ }
+ return res;
+
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Find first file */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_findfirst (
+ FATFS_DIR* dp, /* Pointer to the blank directory object */
+ FILINFO* fno, /* Pointer to the file information structure */
+ const TCHAR* path, /* Pointer to the directory to open */
+ const TCHAR* pattern /* Pointer to the matching pattern */
+)
+{
+ FRESULT res;
+
+
+ dp->pat = pattern; /* Save pointer to pattern string */
+ res = f_opendir(dp, path); /* Open the target directory */
+ if (res == FR_OK)
+ res = f_findnext(dp, fno); /* Find the first item */
+ return res;
+}
+
+#endif /* _USE_FIND */
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+ const TCHAR* path, /* Pointer to the file path */
+ FILINFO* fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) { /* Found an object */
+ if (fno) get_fileinfo(&dj, fno);
+ } else { /* It is root directory */
+ res = FR_INVALID_NAME;
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+ const TCHAR* path, /* Path name of the logical drive number */
+ DWORD* nclst, /* Pointer to a variable to return number of free clusters */
+ FATFS** fatfs /* Pointer to return pointer to corresponding file system object */
+)
+{
+ FRESULT res;
+ FATFS *fs;
+ DWORD nfree, clst, sect, stat;
+ UINT i;
+ BYTE fat, *p;
+
+
+ /* Get logical drive number */
+ res = find_volume(fatfs, &path, 0);
+ fs = *fatfs;
+ if (res == FR_OK) {
+ /* If free_clust is valid, return it without full cluster scan */
+ if (fs->free_clust <= fs->n_fatent - 2) {
+ *nclst = fs->free_clust;
+ } else {
+ /* Get number of free clusters */
+ fat = fs->fs_type;
+ nfree = 0;
+ if (fat == FS_FAT12) { /* Sector unalighed entries: Search FAT via regular routine. */
+ clst = 2;
+ do {
+ stat = get_fat(fs, clst);
+ if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+ if (stat == 1) { res = FR_INT_ERR; break; }
+ if (stat == 0) nfree++;
+ } while (++clst < fs->n_fatent);
+ } else { /* Sector alighed entries: Accelerate the FAT search. */
+ clst = fs->n_fatent; sect = fs->fatbase;
+ i = 0; p = 0;
+ do {
+ if (!i) {
+ res = move_window(fs, sect++);
+ if (res != FR_OK) break;
+ p = fs->win;
+ i = SS(fs);
+ }
+ if (fat == FS_FAT16) {
+ if (LD_WORD(p) == 0) nfree++;
+ p += 2; i -= 2;
+ } else {
+ if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) nfree++;
+ p += 4; i -= 4;
+ }
+ } while (--clst);
+ }
+ fs->free_clust = nfree; /* free_clust is valid */
+ fs->fsi_flag |= 1; /* FSInfo is to be updated */
+ *nclst = nfree; /* Return the free clusters */
+ }
+ }
+ LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+ FIL* fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD ncl;
+
+
+ res = validate(fp); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->err) { /* Check error */
+ res = (FRESULT)fp->err;
+ } else {
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK) {
+ if (fp->fsize > fp->fptr) {
+ fp->fsize = fp->fptr; /* Set file size to current R/W point */
+ fp->flag |= FA__WRITTEN;
+ if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
+ res = remove_chain(fp->fs, fp->sclust);
+ fp->sclust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
+ }
+#if !_FS_TINY
+ if (res == FR_OK && (fp->flag & FA__DIRTY)) {
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ res = FR_DISK_ERR;
+ else
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ }
+ if (res != FR_OK) fp->err = (FRESULT)res;
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+ const TCHAR* path /* Pointer to the file or directory path */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj, sdj;
+ BYTE *dir;
+ DWORD dclst = 0;
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
+ res = FR_INVALID_NAME; /* Cannot remove dot entry */
+#if _FS_LOCK
+ if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open object */
+#endif
+ if (res == FR_OK) { /* The object is accessible */
+ dir = dj.dir;
+ if (!dir) {
+ res = FR_INVALID_NAME; /* Cannot remove the origin directory */
+ } else {
+ if (dir[DIR_Attr] & AM_RDO)
+ res = FR_DENIED; /* Cannot remove R/O object */
+ }
+ if (res == FR_OK) {
+ dclst = ld_clust(dj.fs, dir);
+ if (dclst && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-directory ? */
+#if _FS_RPATH
+ if (dclst == dj.fs->cdir) { /* Is it the current directory? */
+ res = FR_DENIED;
+ } else
+#endif
+ {
+ mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Open the sub-directory */
+ sdj.sclust = dclst;
+ res = dir_sdi(&sdj, 2);
+ if (res == FR_OK) {
+ res = dir_read(&sdj, 0); /* Read an item (excluding dot entries) */
+ if (res == FR_OK) res = FR_DENIED; /* Not empty? (cannot remove) */
+ if (res == FR_NO_FILE) res = FR_OK; /* Empty? (can remove) */
+ }
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&dj); /* Remove the directory entry */
+ if (res == FR_OK && dclst) /* Remove the cluster chain if exist */
+ res = remove_chain(dj.fs, dclst);
+ if (res == FR_OK) res = sync_fs(dj.fs);
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+ const TCHAR* path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ BYTE *dir, n;
+ DWORD dsc, dcl, pcl, tm = GET_FATTIME();
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
+ if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_NO_FILE) { /* Can create a new directory */
+ dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
+ res = FR_OK;
+ if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
+ if (dcl == 1) res = FR_INT_ERR;
+ if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (res == FR_OK) /* Flush FAT */
+ res = sync_window(dj.fs);
+ if (res == FR_OK) { /* Initialize the new directory table */
+ dsc = clust2sect(dj.fs, dcl);
+ dir = dj.fs->win;
+ mem_set(dir, 0, SS(dj.fs));
+ mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
+ dir[DIR_Name] = '.';
+ dir[DIR_Attr] = AM_DIR;
+ ST_DWORD(dir + DIR_WrtTime, tm);
+ st_clust(dir, dcl);
+ mem_cpy(dir + SZ_DIRE, dir, SZ_DIRE); /* Create ".." entry */
+ dir[SZ_DIRE + 1] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ st_clust(dir + SZ_DIRE, pcl);
+ for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
+ dj.fs->winsect = dsc++;
+ dj.fs->wflag = 1;
+ res = sync_window(dj.fs);
+ if (res != FR_OK) break;
+ mem_set(dir, 0, SS(dj.fs));
+ }
+ }
+ if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
+ if (res != FR_OK) {
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ } else {
+ dir = dj.dir;
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir + DIR_WrtTime, tm); /* Created time */
+ st_clust(dir, dcl); /* Table start cluster */
+ dj.fs->wflag = 1;
+ res = sync_fs(dj.fs);
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Attribute */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+ const TCHAR* path, /* Pointer to the file path */
+ BYTE attr, /* Attribute bits */
+ BYTE mask /* Attribute mask to change */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ BYTE *dir;
+ DEFINE_NAMEBUF;
+
+
+ res = find_volume(&dj.fs, &path, 1); /* Get logical drive number */
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Is it a root directory? */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub directory */
+ mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
+ dir[DIR_Attr] = (attr & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
+ dj.fs->wflag = 1;
+ res = sync_fs(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename File/Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+ const TCHAR* path_old, /* Pointer to the object to be renamed */
+ const TCHAR* path_new /* Pointer to the new name */
+)
+{
+ FRESULT res;
+ FATFS_DIR djo, djn;
+ BYTE buf[21], *dir;
+ DWORD dw;
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number of the source object */
+ res = find_volume(&djo.fs, &path_old, 1);
+ if (res == FR_OK) {
+ djn.fs = djo.fs;
+ INIT_BUF(djo);
+ res = follow_path(&djo, path_old); /* Check old object */
+ if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))
+ res = FR_INVALID_NAME;
+#if _FS_LOCK
+ if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+ if (res == FR_OK) { /* Old object is found */
+ if (!djo.dir) { /* Is root dir? */
+ res = FR_NO_FILE;
+ } else {
+ mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about object except name */
+ mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Duplicate the directory object */
+ if (get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
+ res = follow_path(&djn, path_new); /* and make sure if new object name is not conflicting */
+ else
+ res = FR_INVALID_DRIVE;
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
+ res = dir_register(&djn); /* Register the new entry */
+ if (res == FR_OK) {
+/* Start of critical section where any interruption can cause a cross-link */
+ dir = djn.dir; /* Copy information about object except name */
+ mem_cpy(dir + 13, buf + 2, 19);
+ dir[DIR_Attr] = buf[0] | AM_ARC;
+ djo.fs->wflag = 1;
+ if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) { /* Update .. entry in the sub-directory if needed */
+ dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djo.fs, dw);
+ dir = djo.fs->win + SZ_DIRE * 1; /* Ptr to .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ st_clust(dir, djn.sclust);
+ djo.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync_fs(djo.fs);
+ }
+/* End of critical section */
+ }
+ }
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(djo.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+ const TCHAR* path, /* Pointer to the file/directory name */
+ const FILINFO* fno /* Pointer to the time stamp to be set */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ BYTE *dir;
+ DEFINE_NAMEBUF;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Root directory */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub-directory */
+ ST_WORD(dir + DIR_WrtTime, fno->ftime);
+ ST_WORD(dir + DIR_WrtDate, fno->fdate);
+ dj.fs->wflag = 1;
+ res = sync_fs(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+
+#if _USE_LABEL
+/*-----------------------------------------------------------------------*/
+/* Get volume label */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getlabel (
+ const TCHAR* path, /* Path name of the logical drive number */
+ TCHAR* label, /* Pointer to a buffer to return the volume label */
+ DWORD* vsn /* Pointer to a variable to return the volume serial number */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ UINT i, j;
+#if _USE_LFN && _LFN_UNICODE
+ WCHAR w;
+#endif
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &path, 0);
+
+ /* Get volume label */
+ if (res == FR_OK && label) {
+ dj.sclust = 0; /* Open root directory */
+ res = dir_sdi(&dj, 0);
+ if (res == FR_OK) {
+ res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
+ if (res == FR_OK) { /* A volume label is exist */
+#if _USE_LFN && _LFN_UNICODE
+ i = j = 0;
+ do {
+ w = (i < 11) ? dj.dir[i++] : ' ';
+ if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))
+ w = w << 8 | dj.dir[i++];
+ label[j++] = ff_convert(w, 1); /* OEM -> Unicode */
+ } while (j < 11);
+#else
+ mem_cpy(label, dj.dir, 11);
+#endif
+ j = 11;
+ do {
+ label[j] = 0;
+ if (!j) break;
+ } while (label[--j] == ' ');
+ }
+ if (res == FR_NO_FILE) { /* No label, return nul string */
+ label[0] = 0;
+ res = FR_OK;
+ }
+ }
+ }
+
+ /* Get volume serial number */
+ if (res == FR_OK && vsn) {
+ res = move_window(dj.fs, dj.fs->volbase);
+ if (res == FR_OK) {
+ i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;
+ *vsn = LD_DWORD(&dj.fs->win[i]);
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Set volume label */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_setlabel (
+ const TCHAR* label /* Pointer to the volume label to set */
+)
+{
+ FRESULT res;
+ FATFS_DIR dj;
+ BYTE vn[11];
+ UINT i, j, sl;
+ WCHAR w;
+ DWORD tm;
+
+
+ /* Get logical drive number */
+ res = find_volume(&dj.fs, &label, 1);
+ if (res) LEAVE_FF(dj.fs, res);
+
+ /* Create a volume label in directory form */
+ vn[0] = 0;
+ for (sl = 0; label[sl]; sl++) ; /* Get name length */
+ for ( ; sl && label[sl - 1] == ' '; sl--) ; /* Remove trailing spaces */
+ if (sl) { /* Create volume label in directory form */
+ i = j = 0;
+ do {
+#if _USE_LFN && _LFN_UNICODE
+ w = ff_convert(ff_wtoupper(label[i++]), 0);
+#else
+ w = (BYTE)label[i++];
+ if (IsDBCS1(w))
+ w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
+#if _USE_LFN
+ w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
+#else
+ if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */
+#ifdef _EXCVT
+ if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
+#else
+ if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */
+#endif
+#endif
+#endif
+ if (!w || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */
+ LEAVE_FF(dj.fs, FR_INVALID_NAME);
+ if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);
+ vn[j++] = (BYTE)w;
+ } while (i < sl);
+ while (j < 11) vn[j++] = ' '; /* Fill remaining name field */
+ if (vn[0] == DDEM) LEAVE_FF(dj.fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
+ }
+
+ /* Set volume label */
+ dj.sclust = 0; /* Open root directory */
+ res = dir_sdi(&dj, 0);
+ if (res == FR_OK) {
+ res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
+ if (res == FR_OK) { /* A volume label is found */
+ if (vn[0]) {
+ mem_cpy(dj.dir, vn, 11); /* Change the volume label name */
+ tm = GET_FATTIME();
+ ST_DWORD(dj.dir + DIR_WrtTime, tm);
+ } else {
+ dj.dir[0] = DDEM; /* Remove the volume label */
+ }
+ dj.fs->wflag = 1;
+ res = sync_fs(dj.fs);
+ } else { /* No volume label is found or error */
+ if (res == FR_NO_FILE) {
+ res = FR_OK;
+ if (vn[0]) { /* Create volume label as new */
+ res = dir_alloc(&dj, 1); /* Allocate an entry for volume label */
+ if (res == FR_OK) {
+ mem_set(dj.dir, 0, SZ_DIRE); /* Set volume label */
+ mem_cpy(dj.dir, vn, 11);
+ dj.dir[DIR_Attr] = AM_VOL;
+ tm = GET_FATTIME();
+ ST_DWORD(dj.dir + DIR_WrtTime, tm);
+ dj.fs->wflag = 1;
+ res = sync_fs(dj.fs);
+ }
+ }
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_LABEL */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly (available on only tiny cfg) */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+ FIL* fp, /* Pointer to the file object */
+ UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+ UINT btf, /* Number of bytes to forward */
+ UINT* bf /* Pointer to number of bytes forwarded */
+)
+{
+ FRESULT res;
+ DWORD remain, clst, sect;
+ UINT rcnt;
+ BYTE csect;
+
+
+ *bf = 0; /* Clear transfer byte counter */
+
+ res = validate(fp); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->err) /* Check error */
+ LEAVE_FF(fp->fs, (FRESULT)fp->err);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+
+ remain = fp->fsize - fp->fptr;
+ if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
+
+ for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
+ fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->sclust : get_fat(fp->fs, fp->clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ }
+ }
+ sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ if (move_window(fp->fs, sect) != FR_OK) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->dsect = sect;
+ rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
+ if (rcnt > btf) rcnt = btf;
+ rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
+ if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create file system on the logical drive */
+/*-----------------------------------------------------------------------*/
+#define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */
+#define N_FATS 1 /* Number of FATs (1 or 2) */
+
+
+FRESULT f_mkfs (
+ const TCHAR* path, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Size of allocation unit in unit of byte or sector */
+)
+{
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ int vol;
+ BYTE fmt, md, sys, *tbl, pdrv, part;
+ DWORD n_clst, vs, n, wsect;
+ UINT i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
+ FATFS *fs;
+ DSTATUS stat;
+#if _USE_TRIM
+ DWORD eb[2];
+#endif
+
+
+ /* Check mounted drive and clear work area */
+ if (sfd > 1) return FR_INVALID_PARAMETER;
+ vol = get_ldnumber(&path);
+ if (vol < 0) return FR_INVALID_DRIVE;
+ fs = FatFs[vol];
+ if (!fs) return FR_NOT_ENABLED;
+ fs->fs_type = 0;
+ pdrv = LD2PD(vol); /* Physical drive */
+ part = LD2PT(vol); /* Partition (0:auto detect, 1-4:get from partition table)*/
+
+ /* Get disk statics */
+ stat = disk_initialize(pdrv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+#if _MAX_SS != _MIN_SS /* Get disk sector size */
+ if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS || SS(fs) < _MIN_SS)
+ return FR_DISK_ERR;
+#endif
+ if (_MULTI_PARTITION && part) {
+ /* Get partition information from partition table in the MBR */
+ if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
+ if (LD_WORD(fs->win + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
+ tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
+ if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
+ b_vol = LD_DWORD(tbl + 8); /* Volume start sector */
+ n_vol = LD_DWORD(tbl + 12); /* Volume size */
+ } else {
+ /* Create a partition in this function */
+ if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol; /* Volume size */
+ }
+
+ if (au & (au - 1)) au = 0;
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ if (au >= _MIN_SS) au /= SS(fs); /* Number of sectors per cluster */
+ if (!au) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT sub-type */
+ n_clst = n_vol / au;
+ fmt = FS_FAT12;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Determine offset and size of FAT structure */
+ if (fmt == FS_FAT32) {
+ n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+ n_rsv = 32;
+ n_dir = 0;
+ } else {
+ n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
+ n_fat = (n_fat + SS(fs) - 1) / SS(fs);
+ n_rsv = 1;
+ n_dir = (DWORD)N_ROOTDIR * SZ_DIRE / SS(fs);
+ }
+ b_fat = b_vol + n_rsv; /* FAT area start sector */
+ b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
+ b_data = b_dir + n_dir; /* Data area start sector */
+ if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
+
+ /* Align data start sector to erase block boundary (for flash memory media) */
+ if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
+
+ /* Determine number of clusters and final check of validity of the FAT sub-type */
+ n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
+ if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
+ || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
+ return FR_MKFS_ABORTED;
+
+ /* Determine system ID in the partition table */
+ if (fmt == FS_FAT32) {
+ sys = 0x0C; /* FAT32X */
+ } else {
+ if (fmt == FS_FAT12 && n_vol < 0x10000) {
+ sys = 0x01; /* FAT12(<65536) */
+ } else {
+ sys = (n_vol < 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */
+ }
+ }
+
+ if (_MULTI_PARTITION && part) {
+ /* Update system ID in the partition table */
+ tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
+ tbl[4] = sys;
+ if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to teh MBR */
+ return FR_DISK_ERR;
+ md = 0xF8;
+ } else {
+ if (sfd) { /* No partition table (SFD) */
+ md = 0xF0;
+ } else { /* Create partition table (FDISK) */
+ mem_set(fs->win, 0, SS(fs));
+ tbl = fs->win + MBR_Table; /* Create partition table for single partition in the drive */
+ tbl[1] = 1; /* Partition start head */
+ tbl[2] = 1; /* Partition start sector */
+ tbl[3] = 0; /* Partition start cylinder */
+ tbl[4] = sys; /* System type */
+ tbl[5] = 254; /* Partition end head */
+ n = (b_vol + n_vol) / 63 / 255;
+ tbl[6] = (BYTE)(n >> 2 | 63); /* Partition end sector */
+ tbl[7] = (BYTE)n; /* End cylinder */
+ ST_DWORD(tbl + 8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl + 12, n_vol); /* Partition size in LBA */
+ ST_WORD(fs->win + BS_55AA, 0xAA55); /* MBR signature */
+ if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR */
+ return FR_DISK_ERR;
+ md = 0xF8;
+ }
+ }
+
+ /* Create BPB in the VBR */
+ tbl = fs->win; /* Clear sector */
+ mem_set(tbl, 0, SS(fs));
+ mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
+ i = SS(fs); /* Sector size */
+ ST_WORD(tbl + BPB_BytsPerSec, i);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl + BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of root directory entries */
+ ST_WORD(tbl + BPB_RootEntCnt, i);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl + BPB_TotSec16, n_vol);
+ } else {
+ ST_DWORD(tbl + BPB_TotSec32, n_vol);
+ }
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl + BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl + BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl + BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = GET_FATTIME(); /* Use current time as VSN */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl + BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl + BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl + BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl + BPB_FSInfo, 1); /* FSINFO record offset (VBR + 1) */
+ ST_WORD(tbl + BPB_BkBootSec, 6); /* Backup boot record offset (VBR + 6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
+ } else {
+ ST_DWORD(tbl + BS_VolID, n); /* VSN */
+ ST_WORD(tbl + BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl + BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
+ return FR_DISK_ERR;
+ if (fmt == FS_FAT32) /* Write it to the backup VBR if needed (VBR + 6) */
+ disk_write(pdrv, tbl, b_vol + 6, 1);
+
+ /* Initialize FAT area */
+ wsect = b_fat;
+ for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
+ mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ n = md; /* Media descriptor byte */
+ if (fmt != FS_FAT32) {
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT12/16) */
+ } else {
+ n |= 0xFFFFFF00;
+ ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl + 4, 0xFFFFFFFF);
+ ST_DWORD(tbl + 8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */
+ }
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+ }
+
+ /* Initialize root directory */
+ i = (fmt == FS_FAT32) ? au : (UINT)n_dir;
+ do {
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ } while (--i);
+
+#if _USE_TRIM /* Erase data area if needed */
+ {
+ eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
+ disk_ioctl(pdrv, CTRL_TRIM, eb);
+ }
+#endif
+
+ /* Create FSINFO if needed */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl + FSI_LeadSig, 0x41615252);
+ ST_DWORD(tbl + FSI_StrucSig, 0x61417272);
+ ST_DWORD(tbl + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
+ ST_DWORD(tbl + FSI_Nxt_Free, 2); /* Last allocated cluster# */
+ ST_WORD(tbl + BS_55AA, 0xAA55);
+ disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR + 1) */
+ disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR + 7) */
+ }
+
+ return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+
+
+#if _MULTI_PARTITION
+/*-----------------------------------------------------------------------*/
+/* Create partition table on the physical drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_fdisk (
+ BYTE pdrv, /* Physical drive number */
+ const DWORD szt[], /* Pointer to the size table for each partitions */
+ void* work /* Pointer to the working buffer */
+)
+{
+ UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
+ BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
+ DSTATUS stat;
+ DWORD sz_disk, sz_part, s_part;
+
+
+ stat = disk_initialize(pdrv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+ if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
+
+ /* Determine CHS in the table regardless of the drive geometry */
+ for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
+ if (n == 256) n--;
+ e_hd = n - 1;
+ sz_cyl = 63 * n;
+ tot_cyl = sz_disk / sz_cyl;
+
+ /* Create partition table */
+ mem_set(buf, 0, _MAX_SS);
+ p = buf + MBR_Table; b_cyl = 0;
+ for (i = 0; i < 4; i++, p += SZ_PTE) {
+ p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
+ if (!p_cyl) continue;
+ s_part = (DWORD)sz_cyl * b_cyl;
+ sz_part = (DWORD)sz_cyl * p_cyl;
+ if (i == 0) { /* Exclude first track of cylinder 0 */
+ s_hd = 1;
+ s_part += 63; sz_part -= 63;
+ } else {
+ s_hd = 0;
+ }
+ e_cyl = b_cyl + p_cyl - 1;
+ if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
+
+ /* Set partition table */
+ p[1] = s_hd; /* Start head */
+ p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
+ p[3] = (BYTE)b_cyl; /* Start cylinder */
+ p[4] = 0x06; /* System type (temporary setting) */
+ p[5] = e_hd; /* End head */
+ p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
+ p[7] = (BYTE)e_cyl; /* End cylinder */
+ ST_DWORD(p + 8, s_part); /* Start sector in LBA */
+ ST_DWORD(p + 12, sz_part); /* Partition size */
+
+ /* Next partition */
+ b_cyl += p_cyl;
+ }
+ ST_WORD(p, 0xAA55);
+
+ /* Write it to the MBR */
+ return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
+}
+
+
+#endif /* _MULTI_PARTITION */
+#endif /* _USE_MKFS && !_FS_READONLY */
+
+
+
+
+#if _USE_STRFUNC
+/*-----------------------------------------------------------------------*/
+/* Get a string from the file */
+/*-----------------------------------------------------------------------*/
+
+TCHAR* f_gets (
+ TCHAR* buff, /* Pointer to the string buffer to read */
+ int len, /* Size of string buffer (characters) */
+ FIL* fp /* Pointer to the file object */
+)
+{
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
+ UINT rc;
+
+
+ while (n < len - 1) { /* Read characters until buffer gets filled */
+#if _USE_LFN && _LFN_UNICODE
+#if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
+ f_read(fp, s, 1, &rc);
+ if (rc != 1) break;
+ c = s[0];
+ if (c >= 0x80) {
+ if (c < 0xC0) continue; /* Skip stray trailer */
+ if (c < 0xE0) { /* Two-byte sequence */
+ f_read(fp, s, 1, &rc);
+ if (rc != 1) break;
+ c = (c & 0x1F) << 6 | (s[0] & 0x3F);
+ if (c < 0x80) c = '?';
+ } else {
+ if (c < 0xF0) { /* Three-byte sequence */
+ f_read(fp, s, 2, &rc);
+ if (rc != 2) break;
+ c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);
+ if (c < 0x800) c = '?';
+ } else { /* Reject four-byte sequence */
+ c = '?';
+ }
+ }
+ }
+#elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
+ f_read(fp, s, 2, &rc);
+ if (rc != 2) break;
+ c = s[1] + (s[0] << 8);
+#elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
+ f_read(fp, s, 2, &rc);
+ if (rc != 2) break;
+ c = s[0] + (s[1] << 8);
+#else /* Read a character in ANSI/OEM */
+ f_read(fp, s, 1, &rc);
+ if (rc != 1) break;
+ c = s[0];
+ if (IsDBCS1(c)) {
+ f_read(fp, s, 1, &rc);
+ if (rc != 1) break;
+ c = (c << 8) + s[0];
+ }
+ c = ff_convert(c, 1); /* OEM -> Unicode */
+ if (!c) c = '?';
+#endif
+#else /* Read a character without conversion */
+ f_read(fp, s, 1, &rc);
+ if (rc != 1) break;
+ c = s[0];
+#endif
+ if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
+ }
+ *p = 0;
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
+}
+
+
+
+
+#if !_FS_READONLY
+#include <stdarg.h>
+/*-----------------------------------------------------------------------*/
+/* Put a character to the file */
+/*-----------------------------------------------------------------------*/
+
+typedef struct {
+ FIL* fp;
+ int idx, nchr;
+ BYTE buf[64];
+} putbuff;
+
+
+static
+void putc_bfd (
+ putbuff* pb,
+ TCHAR c
+)
+{
+ UINT bw;
+ int i;
+
+
+ if (_USE_STRFUNC == 2 && c == '\n') /* LF -> CRLF conversion */
+ putc_bfd(pb, '\r');
+
+ i = pb->idx; /* Buffer write index (-1:error) */
+ if (i < 0) return;
+
+#if _USE_LFN && _LFN_UNICODE
+#if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
+ if (c < 0x80) { /* 7-bit */
+ pb->buf[i++] = (BYTE)c;
+ } else {
+ if (c < 0x800) { /* 11-bit */
+ pb->buf[i++] = (BYTE)(0xC0 | c >> 6);
+ } else { /* 16-bit */
+ pb->buf[i++] = (BYTE)(0xE0 | c >> 12);
+ pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));
+ }
+ pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));
+ }
+#elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
+ pb->buf[i++] = (BYTE)(c >> 8);
+ pb->buf[i++] = (BYTE)c;
+#elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
+ pb->buf[i++] = (BYTE)c;
+ pb->buf[i++] = (BYTE)(c >> 8);
+#else /* Write a character in ANSI/OEM */
+ c = ff_convert(c, 0); /* Unicode -> OEM */
+ if (!c) c = '?';
+ if (c >= 0x100)
+ pb->buf[i++] = (BYTE)(c >> 8);
+ pb->buf[i++] = (BYTE)c;
+#endif
+#else /* Write a character without conversion */
+ pb->buf[i++] = (BYTE)c;
+#endif
+
+ if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */
+ f_write(pb->fp, pb->buf, (UINT)i, &bw);
+ i = (bw == (UINT)i) ? 0 : -1;
+ }
+ pb->idx = i;
+ pb->nchr++;
+}
+
+
+
+int f_putc (
+ TCHAR c, /* A character to be output */
+ FIL* fp /* Pointer to the file object */
+)
+{
+ putbuff pb;
+ UINT nw;
+
+
+ pb.fp = fp; /* Initialize output buffer */
+ pb.nchr = pb.idx = 0;
+
+ putc_bfd(&pb, c); /* Put a character */
+
+ if ( pb.idx >= 0 /* Flush buffered characters to the file */
+ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
+ && (UINT)pb.idx == nw) return pb.nchr;
+ return EOF;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file */
+/*-----------------------------------------------------------------------*/
+
+int f_puts (
+ const TCHAR* str, /* Pointer to the string to be output */
+ FIL* fp /* Pointer to the file object */
+)
+{
+ putbuff pb;
+ UINT nw;
+
+
+ pb.fp = fp; /* Initialize output buffer */
+ pb.nchr = pb.idx = 0;
+
+ while (*str) /* Put the string */
+ putc_bfd(&pb, *str++);
+
+ if ( pb.idx >= 0 /* Flush buffered characters to the file */
+ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
+ && (UINT)pb.idx == nw) return pb.nchr;
+ return EOF;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a formatted string to the file */
+/*-----------------------------------------------------------------------*/
+
+int f_printf (
+ FIL* fp, /* Pointer to the file object */
+ const TCHAR* fmt, /* Pointer to the format string */
+ ... /* Optional arguments... */
+)
+{
+ va_list arp;
+ BYTE f, r;
+ UINT nw, i, j, w;
+ DWORD v;
+ TCHAR c, d, s[16], *p;
+ putbuff pb;
+
+
+ pb.fp = fp; /* Initialize output buffer */
+ pb.nchr = pb.idx = 0;
+
+ va_start(arp, fmt);
+
+ for (;;) {
+ c = *fmt++;
+ if (c == 0) break; /* End of string */
+ if (c != '%') { /* Non escape character */
+ putc_bfd(&pb, c);
+ continue;
+ }
+ w = f = 0;
+ c = *fmt++;
+ if (c == '0') { /* Flag: '0' padding */
+ f = 1; c = *fmt++;
+ } else {
+ if (c == '-') { /* Flag: left justified */
+ f = 2; c = *fmt++;
+ }
+ }
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
+ c = *fmt++;
+ }
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
+ f |= 4; c = *fmt++;
+ }
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ p = va_arg(arp, TCHAR*);
+ for (j = 0; p[j]; j++) ;
+ if (!(f & 2)) {
+ while (j++ < w) putc_bfd(&pb, ' ');
+ }
+ while (*p) putc_bfd(&pb, *p++);
+ while (j++ < w) putc_bfd(&pb, ' ');
+ continue;
+ case 'C' : /* Character */
+ putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
+ case 'B' : /* Binary */
+ r = 2; break;
+ case 'O' : /* Octal */
+ r = 8; break;
+ case 'D' : /* Signed decimal */
+ case 'U' : /* Unsigned decimal */
+ r = 10; break;
+ case 'X' : /* Hexdecimal */
+ r = 16; break;
+ default: /* Unknown type (pass-through) */
+ putc_bfd(&pb, c); continue;
+ }
+
+ /* Get an argument and put it in numeral */
+ v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
+ if (d == 'D' && (v & 0x80000000)) {
+ v = 0 - v;
+ f |= 8;
+ }
+ i = 0;
+ do {
+ d = (TCHAR)(v % r); v /= r;
+ if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
+ s[i++] = d + '0';
+ } while (v && i < sizeof s / sizeof s[0]);
+ if (f & 8) s[i++] = '-';
+ j = i; d = (f & 1) ? '0' : ' ';
+ while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
+ do putc_bfd(&pb, s[--i]); while (i);
+ while (j++ < w) putc_bfd(&pb, d);
+ }
+
+ va_end(arp);
+
+ if ( pb.idx >= 0 /* Flush buffered characters to the file */
+ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
+ && (UINT)pb.idx == nw) return pb.nchr;
+ return EOF;
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_STRFUNC */