diff options
Diffstat (limited to 'fatfs/src/ff.c')
| -rw-r--r-- | fatfs/src/ff.c | 6041 |
1 files changed, 0 insertions, 6041 deletions
diff --git a/fatfs/src/ff.c b/fatfs/src/ff.c deleted file mode 100644 index ffc5240..0000000 --- a/fatfs/src/ff.c +++ /dev/null @@ -1,6041 +0,0 @@ -/*----------------------------------------------------------------------------/
-/ FatFs - Generic FAT file system module R0.12b /
-/-----------------------------------------------------------------------------/
-/
-/ Copyright (C) 2016, ChaN, all right reserved.
-/
-/ FatFs module is an open source software. Redistribution and use of FatFs in
-/ source and binary forms, with or without modification, are permitted provided
-/ that the following condition is met:
-
-/ 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 device I/O functions */
-
-
-/*--------------------------------------------------------------------------
-
- Module Private Definitions
-
----------------------------------------------------------------------------*/
-
-#if _FATFS != 68020 /* Revision ID */
-#error Wrong include file (ff.h).
-#endif
-
-
-#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
-
-
-/* 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
-
-
-
-/* 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 */
-#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 lock controls */
-#if _FS_LOCK != 0
-#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) */
- DWORD ofs; /* Object ID 3, directory offset */
- 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, \
- 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,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 != 0
-#error Cannot enable LFN 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 != 0 /* 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 */
-
-
-/* File attribute bits (internal use) */
-#define AM_VOL 0x08 /* Volume label */
-#define AM_LFN 0x0F /* LFN entry */
-#define AM_MASK 0x3F /* Mask of defined bits */
-
-
-/* File access control and file status flags (internal use) */
-#define FA_SEEKEND 0x20 /* Seek to end of the file on file open */
-#define FA_MODIFIED 0x40 /* File has been modified */
-#define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */
-
-
-/* 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 */
-#define NS_NOLFN 0x40 /* Do not find LFN */
-#define NS_NONAME 0x80 /* Not followed */
-
-
-/* Limits and boundaries (differ from specs but correct for real DOS/Windows) */
-#define MAX_FAT12 0xFF5 /* Maximum number of FAT12 clusters */
-#define MAX_FAT16 0xFFF5 /* Maximum number of FAT16 clusters */
-#define MAX_FAT32 0xFFFFFF5 /* Maximum number of FAT32 clusters */
-#define MAX_EXFAT 0x7FFFFFFD /* Maximum number of exFAT clusters (limited by implementation) */
-#define MAX_DIR 0x200000 /* Maximum size of FAT directory */
-#define MAX_DIR_EX 0x10000000 /* Maximum size of exFAT directory */
-
-
-/* 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-byte) */
-#define BS_OEMName 3 /* OEM name (8-byte) */
-#define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */
-#define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */
-#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */
-#define BPB_NumFATs 16 /* Number of FATs (BYTE) */
-#define BPB_RootEntCnt 17 /* Size of root directory area for FAT12/16 [entry] (WORD) */
-#define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */
-#define BPB_Media 21 /* Media descriptor byte (BYTE) */
-#define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */
-#define BPB_SecPerTrk 24 /* Track size for int13h [sector] (WORD) */
-#define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */
-#define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */
-#define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */
-#define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */
-#define BS_NTres 37 /* Error flag (BYTE) */
-#define BS_BootSig 38 /* Extended boot signature (BYTE) */
-#define BS_VolID 39 /* Volume serial number (DWORD) */
-#define BS_VolLab 43 /* Volume label string (8-byte) */
-#define BS_FilSysType 54 /* File system type string (8-byte) */
-#define BS_BootCode 62 /* Boot code (448-byte) */
-#define BS_55AA 510 /* Signature word (WORD) */
-
-#define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */
-#define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */
-#define BPB_FSVer32 42 /* FAT32: File system version (WORD) */
-#define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */
-#define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */
-#define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */
-#define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */
-#define BS_NTres32 65 /* FAT32: Error flag (BYTE) */
-#define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */
-#define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */
-#define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */
-#define BS_FilSysType32 82 /* FAT32: File system type string (8-byte) */
-#define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */
-
-#define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */
-#define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */
-#define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */
-#define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */
-#define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */
-#define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */
-#define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */
-#define BPB_RootClusEx 96 /* exFAT: Root directory cluster (DWORD) */
-#define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */
-#define BPB_FSVerEx 104 /* exFAT: File system version (WORD) */
-#define BPB_VolFlagEx 106 /* exFAT: Volume flags (BYTE) */
-#define BPB_ActFatEx 107 /* exFAT: Active FAT flags (BYTE) */
-#define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in byte (BYTE) */
-#define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in sector (BYTE) */
-#define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */
-#define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */
-#define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */
-#define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */
-#define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */
-
-#define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */
-#define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */
-#define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */
-#define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */
-
-#define MBR_Table 446 /* MBR: Offset of partition table in the MBR */
-#define SZ_PTE 16 /* MBR: Size of a partition table entry */
-#define PTE_Boot 0 /* MBR PTE: Boot indicator */
-#define PTE_StHead 1 /* MBR PTE: Start head */
-#define PTE_StSec 2 /* MBR PTE: Start sector */
-#define PTE_StCyl 3 /* MBR PTE: Start cylinder */
-#define PTE_System 4 /* MBR PTE: System ID */
-#define PTE_EdHead 5 /* MBR PTE: End head */
-#define PTE_EdSec 6 /* MBR PTE: End sector */
-#define PTE_EdCyl 7 /* MBR PTE: End cylinder */
-#define PTE_StLba 8 /* MBR PTE: Start in LBA */
-#define PTE_SizLba 12 /* MBR PTE: Size in LBA */
-
-#define DIR_Name 0 /* Short file name (11-byte) */
-#define DIR_Attr 11 /* Attribute (BYTE) */
-#define DIR_NTres 12 /* Lower case flag (BYTE) */
-#define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */
-#define DIR_CrtTime 14 /* Created time (DWORD) */
-#define DIR_LstAccDate 18 /* Last accessed date (WORD) */
-#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */
-#define DIR_ModTime 22 /* Modified time (DWORD) */
-#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */
-#define DIR_FileSize 28 /* File size (DWORD) */
-#define LDIR_Ord 0 /* LFN entry order and LLE flag (BYTE) */
-#define LDIR_Attr 11 /* LFN attribute (BYTE) */
-#define LDIR_Type 12 /* LFN type (BYTE) */
-#define LDIR_Chksum 13 /* Checksum of the SFN entry (BYTE) */
-#define LDIR_FstClusLO 26 /* Must be zero (WORD) */
-#define XDIR_Type 0 /* Type of exFAT directory entry (BYTE) */
-#define XDIR_NumLabel 1 /* Number of volume label characters (BYTE) */
-#define XDIR_Label 2 /* Volume label (11-WORD) */
-#define XDIR_CaseSum 4 /* Sum of case conversion table (DWORD) */
-#define XDIR_NumSec 1 /* Number of secondary entries (BYTE) */
-#define XDIR_SetSum 2 /* Sum of the set of directory entries (WORD) */
-#define XDIR_Attr 4 /* File attribute (WORD) */
-#define XDIR_CrtTime 8 /* Created time (DWORD) */
-#define XDIR_ModTime 12 /* Modified time (DWORD) */
-#define XDIR_AccTime 16 /* Last accessed time (DWORD) */
-#define XDIR_CrtTime10 20 /* Created time subsecond (BYTE) */
-#define XDIR_ModTime10 21 /* Modified time subsecond (BYTE) */
-#define XDIR_CrtTZ 22 /* Created timezone (BYTE) */
-#define XDIR_ModTZ 23 /* Modified timezone (BYTE) */
-#define XDIR_AccTZ 24 /* Last accessed timezone (BYTE) */
-#define XDIR_GenFlags 33 /* Gneral secondary flags (WORD) */
-#define XDIR_NumName 35 /* Number of file name characters (BYTE) */
-#define XDIR_NameHash 36 /* Hash of file name (WORD) */
-#define XDIR_ValidFileSize 40 /* Valid file size (QWORD) */
-#define XDIR_FstClus 52 /* First cluster of the file data (DWORD) */
-#define XDIR_FileSize 56 /* File/Directory size (QWORD) */
-
-#define SZDIRE 32 /* Size of a directory entry */
-#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
-#define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */
-#define RDDEM 0x05 /* Replacement of the character collides with DDEM */
-
-
-
-
-
-/*--------------------------------------------------------------------------
-
- Module Private Work Area
-
----------------------------------------------------------------------------*/
-
-/* Remark: Variables here without initial value shall be guaranteed zero/null
-/ at start-up. If not, either the linker or start-up routine being used is
-/ not compliance with 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 != 0 && _VOLUMES >= 2
-static BYTE CurrVol; /* Current drive */
-#endif
-
-#if _FS_LOCK != 0
-static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
-#endif
-
-#if _USE_LFN == 0 /* Non-LFN configuration */
-#define DEF_NAMBUF
-#define INIT_NAMBUF(fs)
-#define FREE_NAMBUF()
-#else
-#if _MAX_LFN < 12 || _MAX_LFN > 255
-#error Wrong _MAX_LFN setting
-#endif
-
-#if _USE_LFN == 1 /* LFN enabled with static working buffer */
-#if _FS_EXFAT
-static BYTE DirBuf[SZDIRE*19]; /* Directory entry block scratchpad buffer (19 entries in size) */
-#endif
-static WCHAR LfnBuf[_MAX_LFN+1]; /* LFN enabled with static working buffer */
-#define DEF_NAMBUF
-#define INIT_NAMBUF(fs)
-#define FREE_NAMBUF()
-
-#elif _USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */
-#if _FS_EXFAT
-#define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[SZDIRE*19];
-#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }
-#define FREE_NAMBUF()
-#else
-#define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1];
-#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; }
-#define FREE_NAMBUF()
-#endif
-
-#elif _USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */
-#if _FS_EXFAT
-#define DEF_NAMBUF WCHAR *lfn;
-#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2 + SZDIRE*19); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); }
-#define FREE_NAMBUF() ff_memfree(lfn)
-#else
-#define DEF_NAMBUF WCHAR *lfn;
-#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }
-#define FREE_NAMBUF() ff_memfree(lfn)
-#endif
-
-#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
-
----------------------------------------------------------------------------*/
-
-
-/*-----------------------------------------------------------------------*/
-/* Load/Store multi-byte word in the FAT structure */
-/*-----------------------------------------------------------------------*/
-
-static
-WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */
-{
- WORD rv;
-
- rv = ptr[1];
- rv = rv << 8 | ptr[0];
- return rv;
-}
-
-static
-DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */
-{
- DWORD rv;
-
- rv = ptr[3];
- rv = rv << 8 | ptr[2];
- rv = rv << 8 | ptr[1];
- rv = rv << 8 | ptr[0];
- return rv;
-}
-
-#if _FS_EXFAT
-static
-QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */
-{
- QWORD rv;
-
- rv = ptr[7];
- rv = rv << 8 | ptr[6];
- rv = rv << 8 | ptr[5];
- rv = rv << 8 | ptr[4];
- rv = rv << 8 | ptr[3];
- rv = rv << 8 | ptr[2];
- rv = rv << 8 | ptr[1];
- rv = rv << 8 | ptr[0];
- return rv;
-}
-#endif
-
-#if !_FS_READONLY
-static
-void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */
-{
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val;
-}
-
-static
-void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */
-{
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val;
-}
-
-#if _FS_EXFAT
-static
-void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */
-{
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val; val >>= 8;
- *ptr++ = (BYTE)val;
-}
-#endif
-#endif /* !_FS_READONLY */
-
-
-
-/*-----------------------------------------------------------------------*/
-/* 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 (cnt) {
- do *d++ = *s++; while (--cnt);
- }
-}
-
-/* Fill memory block */
-static
-void mem_set (void* dst, int val, UINT cnt) {
- BYTE *d = (BYTE*)dst;
-
- do *d++ = (BYTE)val; while (--cnt);
-}
-
-/* Compare memory block */
-static
-int mem_cmp (const void* dst, const void* src, UINT cnt) { /* ZR:same, NZ:different */
- const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
- int r = 0;
-
- do {
- r = *d++ - *s++;
- } while (--cnt && r == 0);
-
- return r;
-}
-
-/* Check if chr is contained in the string */
-static
-int chk_chr (const char* str, int chr) { /* NZ:contained, ZR:not contained */
- while (*str && *str != chr) str++;
- return *str;
-}
-
-
-
-
-#if _FS_REENTRANT
-/*-----------------------------------------------------------------------*/
-/* Request/Release grant to access the volume */
-/*-----------------------------------------------------------------------*/
-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_TIMEOUT) {
- ff_rel_grant(fs->sobj);
- }
-}
-
-#endif
-
-
-
-#if _FS_LOCK != 0
-/*-----------------------------------------------------------------------*/
-/* File lock control functions */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT chk_lock ( /* Check if the file can be accessed */
- 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->obj.fs && /* Check if the object matched with an open object */
- Files[i].clu == dp->obj.sclust &&
- Files[i].ofs == dp->dptr) 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) */
- 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->obj.fs &&
- Files[i].clu == dp->obj.sclust &&
- Files[i].ofs == dp->dptr) 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->obj.fs;
- Files[i].clu = dp->obj.sclust;
- Files[i].ofs = dp->dptr;
- 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 > 0) n--; /* Decrement read mode open count */
- Files[i].ctr = n;
- if (n == 0) 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 /* _FS_LOCK != 0 */
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Move/Flush disk access window in the file system object */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-static
-FRESULT sync_window ( /* Returns FR_OK or FR_DISK_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 ( /* Returns FR_OK or FR_DISK_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;
-}
-
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Synchronize file system and strage device */
-/*-----------------------------------------------------------------------*/
-
-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_clst);
- st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);
- /* 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# */
-/*-----------------------------------------------------------------------*/
-
-static
-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 */
-/*-----------------------------------------------------------------------*/
-
-static
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */
- _FDID* obj, /* Corresponding object */
- DWORD clst /* Cluster number to get the value */
-)
-{
- UINT wc, bc;
- DWORD val;
- FATFS *fs = obj->fs;
-
-
- 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;
- val = ld_word(fs->win + clst * 2 % SS(fs));
- break;
-
- case FS_FAT32 :
- if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
- val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;
- break;
-#if _FS_EXFAT
- case FS_EXFAT :
- if (obj->objsize) {
- DWORD cofs = clst - obj->sclust; /* Offset from start cluster */
- DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize; /* Number of clusters - 1 */
-
- if (obj->stat == 2) { /* Is there no valid chain on the FAT? */
- if (cofs <= clen) {
- val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* Generate the value */
- break;
- }
- }
- if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the contiguous part? */
- val = clst + 1; /* Generate the value */
- break;
- }
- if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */
- if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
- val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;
- break;
- }
- }
- /* go next */
-#endif
- default:
- val = 1; /* Internal error */
- }
- }
-
- return val;
-}
-
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* FAT access - Change value of a FAT entry */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
- FATFS* fs, /* Corresponding 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 = FR_INT_ERR;
-
-
- if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */
- switch (fs->fs_type) {
- case FS_FAT12 : /* Bitfield items */
- 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 : /* WORD aligned items */
- res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
- if (res != FR_OK) break;
- st_word(fs->win + clst * 2 % SS(fs), (WORD)val);
- fs->wflag = 1;
- break;
-
- case FS_FAT32 : /* DWORD aligned items */
-#if _FS_EXFAT
- case FS_EXFAT :
-#endif
- res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
- if (res != FR_OK) break;
- if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
- val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);
- }
- st_dword(fs->win + clst * 4 % SS(fs), val);
- fs->wflag = 1;
- break;
- }
- }
- return res;
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-
-#if _FS_EXFAT && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* exFAT: Accessing FAT and Allocation Bitmap */
-/*-----------------------------------------------------------------------*/
-
-/*---------------------------------------------*/
-/* exFAT: Find a contiguous free cluster block */
-/*---------------------------------------------*/
-
-static
-DWORD find_bitmap ( /* 0:No free cluster, 2..:Free cluster found, 0xFFFFFFFF:Disk error */
- FATFS* fs, /* File system object */
- DWORD clst, /* Cluster number to scan from */
- DWORD ncl /* Number of contiguous clusters to find (1..) */
-)
-{
- BYTE bm, bv;
- UINT i;
- DWORD val, scl, ctr;
-
-
- clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */
- if (clst >= fs->n_fatent - 2) clst = 0;
- scl = val = clst; ctr = 0;
- for (;;) {
- if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF; /* (assuming bitmap is located top of the cluster heap) */
- i = val / 8 % SS(fs); bm = 1 << (val % 8);
- do {
- do {
- bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */
- if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */
- val = 0; bm = 0; i = 4096;
- }
- if (!bv) { /* Is it a free cluster? */
- if (++ctr == ncl) return scl + 2; /* Check run length */
- } else {
- scl = val; ctr = 0; /* Encountered a live cluster, restart to scan */
- }
- if (val == clst) return 0; /* All cluster scanned? */
- } while (bm);
- bm = 1;
- } while (++i < SS(fs));
- }
-}
-
-
-/*------------------------------------*/
-/* exFAT: Set/Clear a block of bitmap */
-/*------------------------------------*/
-
-static
-FRESULT change_bitmap (
- FATFS* fs, /* File system object */
- DWORD clst, /* Cluster number to change from */
- DWORD ncl, /* Number of clusters to be changed */
- int bv /* bit value to be set (0 or 1) */
-)
-{
- BYTE bm;
- UINT i;
- DWORD sect;
-
-
- clst -= 2; /* The first bit corresponds to cluster #2 */
- sect = fs->database + clst / 8 / SS(fs); /* Sector address (assuming bitmap is located top of the cluster heap) */
- i = clst / 8 % SS(fs); /* Byte offset in the sector */
- bm = 1 << (clst % 8); /* Bit mask in the byte */
- for (;;) {
- if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;
- do {
- do {
- if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */
- fs->win[i] ^= bm; /* Flip the bit */
- fs->wflag = 1;
- if (--ncl == 0) return FR_OK; /* All bits processed? */
- } while (bm <<= 1); /* Next bit */
- bm = 1;
- } while (++i < SS(fs)); /* Next byte */
- i = 0;
- }
-}
-
-
-/*---------------------------------------------*/
-/* Complement contiguous part of the FAT chain */
-/*---------------------------------------------*/
-
-static
-FRESULT fill_fat_chain (
- _FDID* obj /* Pointer to the corresponding object */
-)
-{
- FRESULT res;
- DWORD cl, n;
-
- if (obj->stat == 3) { /* Has the object been changed 'fragmented'? */
- for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */
- res = put_fat(obj->fs, cl, cl + 1);
- if (res != FR_OK) return res;
- }
- obj->stat = 0; /* Change status 'FAT chain is valid' */
- }
- return FR_OK;
-}
-
-#endif /* _FS_EXFAT && !_FS_READONLY */
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* FAT handling - Remove a cluster chain */
-/*-----------------------------------------------------------------------*/
-static
-FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
- _FDID* obj, /* Corresponding object */
- DWORD clst, /* Cluster to remove a chain from */
- DWORD pclst /* Previous cluster of clst (0:an entire chain) */
-)
-{
- FRESULT res = FR_OK;
- DWORD nxt;
- FATFS *fs = obj->fs;
-#if _FS_EXFAT || _USE_TRIM
- DWORD scl = clst, ecl = clst;
-#endif
-#if _USE_TRIM
- DWORD rt[2];
-#endif
-
- if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */
-
- /* Mark the previous cluster 'EOC' on the FAT if it exists */
- if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {
- res = put_fat(fs, pclst, 0xFFFFFFFF);
- if (res != FR_OK) return res;
- }
-
- /* Remove the chain */
- do {
- nxt = get_fat(obj, clst); /* Get cluster status */
- if (nxt == 0) break; /* Empty cluster? */
- if (nxt == 1) return FR_INT_ERR; /* Internal error? */
- if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */
- if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
- res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */
- if (res != FR_OK) return res;
- }
- if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
- fs->free_clst++;
- fs->fsi_flag |= 1;
- }
-#if _FS_EXFAT || _USE_TRIM
- if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
- ecl = nxt;
- } else { /* End of contiguous cluster block */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */
- if (res != FR_OK) return res;
- }
-#endif
-#if _USE_TRIM
- rt[0] = clust2sect(fs, scl); /* Start sector */
- rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
- disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Inform device the block can be erased */
-#endif
- scl = ecl = nxt;
- }
-#endif
- clst = nxt; /* Next cluster */
- } while (clst < fs->n_fatent); /* Repeat while not the last link */
-
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- if (pclst == 0) { /* Does object have no chain? */
- obj->stat = 0; /* Change the object status 'initial' */
- } else {
- if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Did the chain got contiguous? */
- obj->stat = 2; /* Change the object status 'contiguous' */
- }
- }
- }
-#endif
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT handling - Stretch a chain or Create a new chain */
-/*-----------------------------------------------------------------------*/
-static
-DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
- _FDID* obj, /* Corresponding object */
- DWORD clst /* Cluster# to stretch, 0:Create a new chain */
-)
-{
- DWORD cs, ncl, scl;
- FRESULT res;
- FATFS *fs = obj->fs;
-
-
- if (clst == 0) { /* Create a new chain */
- scl = fs->last_clst; /* Get suggested cluster to start from */
- if (scl == 0 || scl >= fs->n_fatent) scl = 1;
- }
- else { /* Stretch current chain */
- cs = get_fat(obj, 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;
- }
-
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */
- if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */
- res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */
- if (res == FR_INT_ERR) return 1;
- if (res == FR_DISK_ERR) return 0xFFFFFFFF;
- if (clst == 0) { /* Is it a new chain? */
- obj->stat = 2; /* Set status 'contiguous chain' */
- } else { /* This is a stretched chain */
- if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */
- obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */
- obj->stat = 3; /* Change status 'just fragmented' */
- }
- }
- } else
-#endif
- { /* On the FAT12/16/32 volume */
- 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(obj, ncl); /* Get the cluster status */
- if (cs == 0) break; /* Found a free cluster */
- if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* An error occurred */
- if (ncl == scl) return 0; /* No free cluster */
- }
- }
-
- if (_FS_EXFAT && fs->fs_type == FS_EXFAT && obj->stat == 2) { /* Is it a contiguous chain? */
- res = FR_OK; /* FAT does not need to be written */
- } else {
- res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */
- if (res == FR_OK && clst) {
- res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */
- }
- }
-
- if (res == FR_OK) { /* Update FSINFO if function succeeded. */
- fs->last_clst = ncl;
- if (fs->free_clst < fs->n_fatent - 2) fs->free_clst--;
- fs->fsi_flag |= 1;
- } else {
- ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Create error status */
- }
-
- return ncl; /* Return new cluster number or error status */
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-
-#if _USE_FASTSEEK
-/*-----------------------------------------------------------------------*/
-/* FAT handling - Convert offset into cluster with link map table */
-/*-----------------------------------------------------------------------*/
-
-static
-DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
- FIL* fp, /* Pointer to the file object */
- FSIZE_t ofs /* File offset to be converted to cluster# */
-)
-{
- DWORD cl, ncl, *tbl;
- FATFS *fs = fp->obj.fs;
-
-
- tbl = fp->cltbl + 1; /* Top of CLMT */
- cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */
- for (;;) {
- ncl = *tbl++; /* Number of cluters in the fragment */
- if (ncl == 0) 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 */
- DIR* dp, /* Pointer to directory object */
- DWORD ofs /* Offset of directory table */
-)
-{
- DWORD csz, clst;
- FATFS *fs = dp->obj.fs;
-
-
- if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */
- return FR_INT_ERR;
- }
- dp->dptr = ofs; /* Set current offset */
- clst = dp->obj.sclust; /* Table start cluster (0:root) */
- if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */
- clst = fs->dirbase;
- if (_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */
- }
-
- if (clst == 0) { /* Static table (root-directory in FAT12/16) */
- if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */
- dp->sect = fs->dirbase;
-
- } else { /* Dynamic table (sub-directory or root-directory in FAT32+) */
- csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */
- while (ofs >= csz) { /* Follow cluster chain */
- clst = get_fat(&dp->obj, clst); /* Get next cluster */
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
- if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */
- ofs -= csz;
- }
- dp->sect = clust2sect(fs, clst);
- }
- dp->clust = clst; /* Current cluster# */
- if (!dp->sect) return FR_INT_ERR;
- dp->sect += ofs / SS(fs); /* Sector# of the directory entry */
- dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */
-
- 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 */
- DIR* dp, /* Pointer to the directory object */
- int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
-)
-{
- DWORD ofs, clst;
- FATFS *fs = dp->obj.fs;
-#if !_FS_READONLY
- UINT n;
-#endif
-
- ofs = dp->dptr + SZDIRE; /* Next entry */
- if (!dp->sect || ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE; /* Report EOT when offset has reached max value */
-
- if (ofs % SS(fs) == 0) { /* Sector changed? */
- dp->sect++; /* Next sector */
-
- if (!dp->clust) { /* Static table */
- if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */
- dp->sect = 0; return FR_NO_FILE;
- }
- }
- else { /* Dynamic table */
- if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */
- clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */
- if (clst <= 1) return FR_INT_ERR; /* Internal error */
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
- if (clst >= fs->n_fatent) { /* Reached end of dynamic table */
-#if !_FS_READONLY
- if (!stretch) { /* If no stretch, report EOT */
- dp->sect = 0; return FR_NO_FILE;
- }
- clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */
- if (clst == 0) return FR_DENIED; /* No free cluster */
- if (clst == 1) return FR_INT_ERR; /* Internal error */
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
- /* Clean-up the stretched table */
- if (_FS_EXFAT) dp->obj.stat |= 4; /* The directory needs to be updated */
- if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */
- mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */
- for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) { /* Fill the new cluster with 0 */
- fs->wflag = 1;
- if (sync_window(fs) != FR_OK) return FR_DISK_ERR;
- }
- fs->winsect -= n; /* Restore window offset */
-#else
- if (!stretch) dp->sect = 0; /* If no stretch, report EOT (this is to suppress warning) */
- dp->sect = 0; return FR_NO_FILE; /* Report EOT */
-#endif
- }
- dp->clust = clst; /* Initialize data for new cluster */
- dp->sect = clust2sect(fs, clst);
- }
- }
- }
- dp->dptr = ofs; /* Current entry */
- dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */
-
- return FR_OK;
-}
-
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Directory handling - Reserve a block of directory entries */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
- DIR* dp, /* Pointer to the directory object */
- UINT nent /* Number of contiguous entries to allocate */
-)
-{
- FRESULT res;
- UINT n;
- FATFS *fs = dp->obj.fs;
-
-
- res = dir_sdi(dp, 0);
- if (res == FR_OK) {
- n = 0;
- do {
- res = move_window(fs, dp->sect);
- if (res != FR_OK) break;
-#if _FS_EXFAT
- if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {
-#else
- if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {
-#endif
- 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);
- } while (res == FR_OK); /* Next entry with table stretch enabled */
- }
-
- if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
- return res;
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT: 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 key 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 (
- FATFS* fs, /* Pointer to the fs object */
- BYTE* dir, /* Pointer to the key entry */
- DWORD cl /* Value to be set */
-)
-{
- st_word(dir + DIR_FstClusLO, (WORD)cl);
- if (fs->fs_type == FS_FAT32) {
- st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));
- }
-}
-#endif
-
-
-
-#if _USE_LFN != 0
-/*------------------------------------------------------------------------*/
-/* FAT-LFN: LFN handling */
-/*------------------------------------------------------------------------*/
-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 */
-
-
-/*--------------------------------------------------------*/
-/* FAT-LFN: Compare a part of file name with an LFN entry */
-/*--------------------------------------------------------*/
-static
-int cmp_lfn ( /* 1:matched, 0:not matched */
- const 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]) return 0; /* Last segment matched but different length */
-
- return 1; /* The part of LFN matched */
-}
-
-
-#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
-/*-----------------------------------------------------*/
-/* FAT-LFN: Pick a part of file name from an LFN entry */
-/*-----------------------------------------------------*/
-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 */
-}
-#endif
-
-
-#if !_FS_READONLY
-/*-----------------------------------------*/
-/* FAT-LFN: Create an entry of LFN entries */
-/*-----------------------------------------*/
-static
-void put_lfn (
- const WCHAR* lfn, /* Pointer to the LFN */
- BYTE* dir, /* Pointer to the LFN entry to be created */
- 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 = lfn[i++]; /* Get an effective character */
- st_word(dir + LfnOfs[s], wc); /* Put it */
- if (wc == 0) wc = 0xFFFF; /* Padding characters for left locations */
- } while (++s < 13);
- if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */
- dir[LDIR_Ord] = ord; /* Set the LFN order */
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _USE_LFN != 0 */
-
-
-
-#if _USE_LFN != 0 && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* FAT-LFN: Create a Numbered SFN */
-/*-----------------------------------------------------------------------*/
-
-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) { /* In case of 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 = (BYTE)((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 /* _USE_LFN != 0 && !_FS_READONLY */
-
-
-
-#if _USE_LFN != 0
-/*-----------------------------------------------------------------------*/
-/* FAT-LFN: Calculate checksum of an SFN entry */
-/*-----------------------------------------------------------------------*/
-
-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 /* _USE_LFN != 0 */
-
-
-
-#if _FS_EXFAT
-/*-----------------------------------------------------------------------*/
-/* exFAT: Checksum */
-/*-----------------------------------------------------------------------*/
-
-static
-WORD xdir_sum ( /* Get checksum of the directoly block */
- const BYTE* dir /* Directory entry block to be calculated */
-)
-{
- UINT i, szblk;
- WORD sum;
-
-
- szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;
- for (i = sum = 0; i < szblk; i++) {
- if (i == XDIR_SetSum) { /* Skip sum field */
- i++;
- } else {
- sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];
- }
- }
- return sum;
-}
-
-
-
-static
-WORD xname_sum ( /* Get check sum (to be used as hash) of the name */
- const WCHAR* name /* File name to be calculated */
-)
-{
- WCHAR chr;
- WORD sum = 0;
-
-
- while ((chr = *name++) != 0) {
- chr = ff_wtoupper(chr); /* File name needs to be ignored case */
- sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);
- sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);
- }
- return sum;
-}
-
-
-#if !_FS_READONLY && _USE_MKFS
-static
-DWORD xsum32 (
- BYTE dat, /* Data to be sumed */
- DWORD sum /* Previous value */
-)
-{
- sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;
- return sum;
-}
-#endif
-
-
-#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
-/*------------------------------------------------------*/
-/* exFAT: Get object information from a directory block */
-/*------------------------------------------------------*/
-
-static
-void get_xdir_info (
- BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */
- FILINFO* fno /* Buffer to store the extracted file information */
-)
-{
- UINT di, si;
- WCHAR w;
-#if !_LFN_UNICODE
- UINT nc;
-#endif
-
- /* Get file name */
-#if _LFN_UNICODE
- if (dirb[XDIR_NumName] <= _MAX_LFN) {
- for (si = SZDIRE * 2, di = 0; di < dirb[XDIR_NumName]; si += 2, di++) {
- if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */
- w = ld_word(dirb + si); /* Get a character */
- fno->fname[di] = w; /* Store it */
- }
- } else {
- di = 0; /* Buffer overflow and inaccessible object */
- }
-#else
- for (si = SZDIRE * 2, di = nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) {
- if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */
- w = ld_word(dirb + si); /* Get a character */
- w = ff_convert(w, 0); /* Unicode -> OEM */
- if (w == 0) { di = 0; break; } /* Could not be converted and inaccessible object */
- if (_DF1S && w >= 0x100) { /* Put 1st byte if it is a DBC (always false at SBCS cfg) */
- fno->fname[di++] = (char)(w >> 8);
- }
- if (di >= _MAX_LFN) { di = 0; break; } /* Buffer overflow and inaccessible object */
- fno->fname[di++] = (char)w;
- }
-#endif
- if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object? */
- fno->fname[di] = 0; /* Terminate file name */
-
- fno->altname[0] = 0; /* No SFN */
- fno->fattrib = dirb[XDIR_Attr]; /* Attribute */
- fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */
- fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */
- fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */
-}
-
-#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
-
-
-/*-----------------------------------*/
-/* exFAT: Get a directry entry block */
-/*-----------------------------------*/
-
-static
-FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */
- DIR* dp /* Pointer to the reading direcotry object pointing the 85 entry */
-)
-{
- FRESULT res;
- UINT i, nent;
- BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */
-
-
- /* Load 85 entry */
- res = move_window(dp->obj.fs, dp->sect);
- if (res != FR_OK) return res;
- if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR;
- mem_cpy(dirb, dp->dir, SZDIRE);
- nent = dirb[XDIR_NumSec] + 1;
-
- /* Load C0 entry */
- res = dir_next(dp, 0);
- if (res != FR_OK) return res;
- res = move_window(dp->obj.fs, dp->sect);
- if (res != FR_OK) return res;
- if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR;
- mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE);
-
- /* Load C1 entries */
- if (nent < 3 || nent > 19) return FR_NO_FILE;
- i = SZDIRE * 2; nent *= SZDIRE;
- do {
- res = dir_next(dp, 0);
- if (res != FR_OK) return res;
- res = move_window(dp->obj.fs, dp->sect);
- if (res != FR_OK) return res;
- if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR;
- mem_cpy(dirb + i, dp->dir, SZDIRE);
- i += SZDIRE;
- } while (i < nent);
-
- /* Sanity check */
- if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;
-
- return FR_OK;
-}
-
-
-#if !_FS_READONLY || _FS_RPATH != 0
-/*------------------------------------------------*/
-/* exFAT: Load the object's directory entry block */
-/*------------------------------------------------*/
-static
-FRESULT load_obj_dir (
- DIR* dp, /* Blank directory object to be used to access containing direcotry */
- const _FDID* obj /* Object with containing directory information */
-)
-{
- FRESULT res;
-
-
- /* Open object containing directory */
- dp->obj.fs = obj->fs;
- dp->obj.sclust = obj->c_scl;
- dp->obj.stat = (BYTE)obj->c_size;
- dp->obj.objsize = obj->c_size & 0xFFFFFF00;
- dp->blk_ofs = obj->c_ofs;
-
- res = dir_sdi(dp, dp->blk_ofs); /* Goto the block location */
- if (res == FR_OK) {
- res = load_xdir(dp); /* Load the object's entry block */
- }
- return res;
-}
-#endif
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------*/
-/* exFAT: Store the directory block to the media */
-/*-----------------------------------------------*/
-static
-FRESULT store_xdir (
- DIR* dp /* Pointer to the direcotry object */
-)
-{
- FRESULT res;
- UINT nent;
- BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */
-
- /* Create set sum */
- st_word(dirb + XDIR_SetSum, xdir_sum(dirb));
- nent = dirb[XDIR_NumSec] + 1;
-
- /* Store the set of directory to the volume */
- res = dir_sdi(dp, dp->blk_ofs);
- while (res == FR_OK) {
- res = move_window(dp->obj.fs, dp->sect);
- if (res != FR_OK) break;
- mem_cpy(dp->dir, dirb, SZDIRE);
- dp->obj.fs->wflag = 1;
- if (--nent == 0) break;
- dirb += SZDIRE;
- res = dir_next(dp, 0);
- }
- return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;
-}
-
-
-
-/*-------------------------------------------*/
-/* exFAT: Create a new directory enrty block */
-/*-------------------------------------------*/
-
-static
-void create_xdir (
- BYTE* dirb, /* Pointer to the direcotry entry block buffer */
- const WCHAR* lfn /* Pointer to the nul terminated file name */
-)
-{
- UINT i;
- BYTE nb, nc;
- WCHAR chr;
-
-
- mem_set(dirb, 0, 2 * SZDIRE); /* Initialize 85+C0 entry */
- dirb[XDIR_Type] = 0x85;
- dirb[XDIR_Type + SZDIRE] = 0xC0;
- st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */
-
- i = SZDIRE * 2; /* C1 offset */
- nc = 0; nb = 1; chr = 1;
- do {
- dirb[i++] = 0xC1; dirb[i++] = 0; /* Entry type C1 */
- do { /* Fill name field */
- if (chr && (chr = lfn[nc]) != 0) nc++; /* Get a character if exist */
- st_word(dirb + i, chr); i += 2; /* Store it */
- } while (i % SZDIRE);
- nb++;
- } while (lfn[nc]); /* Fill next entry if any char follows */
-
- dirb[XDIR_NumName] = nc; /* Set name length */
- dirb[XDIR_NumSec] = nb; /* Set number of C0+C1s */
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _FS_EXFAT */
-
-
-
-#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
-/*-----------------------------------------------------------------------*/
-/* Read an object from the directory */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_read (
- DIR* dp, /* Pointer to the directory object */
- int vol /* Filtered by 0:file/directory or 1:volume label */
-)
-{
- FRESULT res = FR_NO_FILE;
- FATFS *fs = dp->obj.fs;
- BYTE a, c;
-#if _USE_LFN != 0
- BYTE ord = 0xFF, sum = 0xFF;
-#endif
-
- while (dp->sect) {
- res = move_window(fs, dp->sect);
- if (res != FR_OK) break;
- c = dp->dir[DIR_Name]; /* Test for the entry type */
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of the directory */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- if (_USE_LABEL && vol) {
- if (c == 0x83) break; /* Volume label entry? */
- } else {
- if (c == 0x85) { /* Start of the file entry block? */
- dp->blk_ofs = dp->dptr; /* Get location of the block */
- res = load_xdir(dp); /* Load the entry block */
- if (res == FR_OK) {
- dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */
- }
- break;
- }
- }
- } else
-#endif
- { /* On the FAT12/16/32 volume */
- dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */
-#if _USE_LFN != 0 /* LFN configuration */
- if (c == DDEM || 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 an LFN sequence? */
- sum = dp->dir[LDIR_Chksum];
- c &= (BYTE)~LLEF; ord = c;
- dp->blk_ofs = dp->dptr;
- }
- /* Check LFN validity and capture it */
- ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
- } else { /* An SFN entry is found */
- if (ord || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */
- dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */
- }
- break;
- }
- }
-#else /* Non LFN configuration */
- if (c != DDEM && 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; /* Terminate the read operation on error or EOT */
- return res;
-}
-
-#endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Directory handling - Find an object in the directory */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
- DIR* dp /* Pointer to the directory object with the file name */
-)
-{
- FRESULT res;
- FATFS *fs = dp->obj.fs;
- BYTE c;
-#if _USE_LFN != 0
- BYTE a, ord, sum;
-#endif
-
- res = dir_sdi(dp, 0); /* Rewind directory object */
- if (res != FR_OK) return res;
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- BYTE nc;
- UINT di, ni;
- WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */
-
- while ((res = dir_read(dp, 0)) == FR_OK) { /* Read an item */
- if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip the comparison if hash value mismatched */
- for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */
- if ((di % SZDIRE) == 0) di += 2;
- if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;
- }
- if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */
- }
- return res;
- }
-#endif
- /* On the FAT12/16/32 volume */
-#if _USE_LFN != 0
- ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
-#endif
- do {
- res = move_window(fs, dp->sect);
- if (res != FR_OK) break;
- c = dp->dir[DIR_Name];
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
-#if _USE_LFN != 0 /* LFN configuration */
- dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;
- if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
- ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
- } else {
- if (a == AM_LFN) { /* An LFN entry is found */
- if (!(dp->fn[NSFLAG] & NS_NOLFN)) {
- if (c & LLEF) { /* Is it start of LFN sequence? */
- sum = dp->dir[LDIR_Chksum];
- c &= (BYTE)~LLEF; ord = c; /* LFN start order */
- dp->blk_ofs = dp->dptr; /* Start offset of LFN */
- }
- /* Check validity of the LFN entry and compare it with given name */
- ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
- }
- } else { /* An SFN entry is found */
- if (!ord && sum == sum_sfn(dp->dir)) break; /* LFN matched? */
- if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */
- ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
- }
- }
-#else /* Non LFN configuration */
- dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;
- if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */
-#endif
- res = dir_next(dp, 0); /* Next entry */
- } while (res == FR_OK);
-
- return res;
-}
-
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Register an object to the directory */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
- DIR* dp /* Target directory with object name to be created */
-)
-{
- FRESULT res;
- FATFS *fs = dp->obj.fs;
-#if _USE_LFN != 0 /* LFN configuration */
- UINT n, nlen, nent;
- BYTE sn[12], sum;
-
-
- if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */
- for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */
-
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- DIR dj;
-
- nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */
- res = dir_alloc(dp, nent); /* Allocate entries */
- if (res != FR_OK) return res;
- dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set block position */
-
- if (dp->obj.sclust != 0 && (dp->obj.stat & 4)) { /* Has the sub-directory been stretched? */
- dp->obj.stat &= 3;
- dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase object size by cluster size */
- res = fill_fat_chain(&dp->obj); /* Complement FAT chain if needed */
- if (res != FR_OK) return res;
- res = load_obj_dir(&dj, &dp->obj);
- if (res != FR_OK) return res; /* Load the object status */
- st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize); /* Update the allocation status */
- st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);
- fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;
- res = store_xdir(&dj); /* Store the object status */
- if (res != FR_OK) return res;
- }
-
- create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */
- return FR_OK;
- }
-#endif
- /* On the FAT12/16/32 volume */
- mem_cpy(sn, dp->fn, 12);
- if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
- dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */
- for (n = 1; n < 100; n++) {
- gen_numname(dp->fn, sn, fs->lfnbuf, 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' */
- dp->fn[NSFLAG] = sn[NSFLAG];
- }
-
- /* Create an SFN with/without LFNs. */
- nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */
- res = dir_alloc(dp, nent); /* Allocate entries */
- if (res == FR_OK && --nent) { /* Set LFN entry if needed */
- res = dir_sdi(dp, dp->dptr - nent * SZDIRE);
- 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(fs, dp->sect);
- if (res != FR_OK) break;
- put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum);
- 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
-
- /* Set SFN entry */
- if (res == FR_OK) {
- res = move_window(fs, dp->sect);
- if (res == FR_OK) {
- mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */
- mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */
-#if _USE_LFN != 0
- dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
-#endif
- fs->wflag = 1;
- }
- }
-
- return res;
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-#if !_FS_READONLY && _FS_MINIMIZE == 0
-/*-----------------------------------------------------------------------*/
-/* Remove an object from the directory */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
- DIR* dp /* Directory object pointing the entry to be removed */
-)
-{
- FRESULT res;
- FATFS *fs = dp->obj.fs;
-#if _USE_LFN != 0 /* LFN configuration */
- DWORD last = dp->dptr;
-
- res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */
- if (res == FR_OK) {
- do {
- res = move_window(fs, dp->sect);
- if (res != FR_OK) break;
- /* Mark an entry 'deleted' */
- if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- dp->dir[XDIR_Type] &= 0x7F;
- } else { /* On the FAT12/16/32 volume */
- dp->dir[DIR_Name] = DDEM;
- }
- fs->wflag = 1;
- if (dp->dptr >= last) break; /* If reached last entry then 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 = move_window(fs, dp->sect);
- if (res == FR_OK) {
- dp->dir[DIR_Name] = DDEM;
- fs->wflag = 1;
- }
-#endif
-
- return res;
-}
-
-#endif /* !_FS_READONLY && _FS_MINIMIZE == 0 */
-
-
-
-#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
-/*-----------------------------------------------------------------------*/
-/* Get file information from directory entry */
-/*-----------------------------------------------------------------------*/
-
-static
-void get_fileinfo ( /* No return code */
- DIR* dp, /* Pointer to the directory object */
- FILINFO* fno /* Pointer to the file information to be filled */
-)
-{
- UINT i, j;
- TCHAR c;
- DWORD tm;
-#if _USE_LFN != 0
- WCHAR w, lfv;
- FATFS *fs = dp->obj.fs;
-#endif
-
-
- fno->fname[0] = 0; /* Invaidate file info */
- if (!dp->sect) return; /* Exit if read pointer has reached end of directory */
-
-#if _USE_LFN != 0 /* LFN configuration */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- get_xdir_info(fs->dirbuf, fno);
- return;
- } else
-#endif
- { /* On the FAT12/16/32 volume */
- if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */
- i = j = 0;
- while ((w = fs->lfnbuf[j++]) != 0) { /* Get an LFN character */
-#if !_LFN_UNICODE
- w = ff_convert(w, 0); /* Unicode -> OEM */
- if (w == 0) { 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 at SBCS cfg) */
- fno->fname[i++] = (char)(w >> 8);
- }
-#endif
- if (i >= _MAX_LFN) { i = 0; break; } /* No LFN if buffer overflow */
- fno->fname[i++] = (TCHAR)w;
- }
- fno->fname[i] = 0; /* Terminate the LFN */
- }
- }
-
- i = j = 0;
- lfv = fno->fname[i]; /* LFN is exist if non-zero */
- while (i < 11) { /* Copy name body and extension */
- c = (TCHAR)dp->dir[i++];
- if (c == ' ') continue; /* Skip padding spaces */
- if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
- if (i == 9) { /* Insert a . if extension is exist */
- if (!lfv) fno->fname[j] = '.';
- fno->altname[j++] = '.';
- }
-#if _LFN_UNICODE
- if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) {
- c = c << 8 | dp->dir[i++];
- }
- c = ff_convert(c, 1); /* OEM -> Unicode */
- if (!c) c = '?';
-#endif
- fno->altname[j] = c;
- if (!lfv) {
- if (IsUpper(c) && (dp->dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY))) {
- c += 0x20; /* To lower */
- }
- fno->fname[j] = c;
- }
- j++;
- }
- if (!lfv) {
- fno->fname[j] = 0;
- if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */
- }
- fno->altname[j] = 0; /* Terminate the SFN */
-
-#else /* Non-LFN configuration */
- i = j = 0;
- while (i < 11) { /* Copy name body and extension */
- c = (TCHAR)dp->dir[i++];
- if (c == ' ') continue; /* Skip padding spaces */
- if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
- if (i == 9) fno->fname[j++] = '.'; /* Insert a . if extension is exist */
- fno->fname[j++] = c;
- }
- fno->fname[j] = 0;
-#endif
-
- fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */
- fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */
- tm = ld_dword(dp->dir + DIR_ModTime); /* Timestamp */
- fno->ftime = (WORD)tm; fno->fdate = (WORD)(tm >> 16);
-}
-
-#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
-
-
-
-#if _USE_FIND && _FS_MINIMIZE <= 1
-/*-----------------------------------------------------------------------*/
-/* Pattern matching */
-/*-----------------------------------------------------------------------*/
-
-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 */
-)
-{
-#if !_LFN_UNICODE
- WCHAR chr;
-
- chr = (BYTE)*(*ptr)++; /* Get a byte */
- if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
-#ifdef _EXCVT
- if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
-#else
- if (IsDBCS1(chr) && IsDBCS2(**ptr)) { /* Get DBC 2nd byte if needed */
- chr = chr << 8 | (BYTE)*(*ptr)++;
- }
-#endif
- return chr;
-#else
- return ff_wtoupper(*(*ptr)++); /* Get a word and to upper */
-#endif
-}
-
-
-static
-int pattern_matching ( /* 0:not matched, 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 == 0) 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 */
- DIR* dp, /* Pointer to the directory object */
- const TCHAR** path /* Pointer to pointer to the segment in the path string */
-)
-{
-#if _USE_LFN != 0 /* LFN configuration */
- BYTE b, cf;
- WCHAR w, *lfn;
- UINT i, ni, si, di;
- const TCHAR *p;
-
- /* Create LFN in Unicode */
- p = *path; lfn = dp->obj.fs->lfnbuf; si = di = 0;
- for (;;) {
- w = p[si++]; /* Get a character */
- if (w < ' ') break; /* Break if end of the path name */
- if (w == '/' || w == '\\') { /* Break if a separator is found */
- while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
- break;
- }
- if (di >= _MAX_LFN) return FR_INVALID_NAME; /* Reject too long 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)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */
- 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 the path */
-#if _FS_RPATH != 0
- if ((di == 1 && lfn[di - 1] == '.') ||
- (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */
- 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--;
- }
- lfn[di] = 0; /* LFN is created */
- if (di == 0) return FR_INVALID_NAME; /* Reject nul name */
-
- /* 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) */
-
- i = b = 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) cf |= NS_LFN; /* Create LFN entry when there are composite capitals */
- 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 /* _USE_LFN != 0 : Non-LFN configuration */
- BYTE c, d, *sfn;
- UINT ni, si, i;
- const char *p;
-
- /* Create file name in directory form */
- p = *path; sfn = dp->fn;
- mem_set(sfn, ' ', 11);
- si = i = 0; ni = 8;
-#if _FS_RPATH != 0
- 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 the path */
- return FR_OK;
- }
-#endif
- for (;;) {
- c = (BYTE)p[si++];
- if (c <= ' ') break; /* Break if end of the path name */
- if (c == '/' || c == '\\') { /* Break if a separator is found */
- while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
- break;
- }
- if (c == '.' || i >= ni) { /* End of body or over size? */
- if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Over size or invalid dot */
- i = 8; ni = 11; /* Goto extension */
- continue;
- }
- if (c >= 0x80) { /* Extended character? */
-#ifdef _EXCVT
- c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
-#else
-#if !_DF1S
- return FR_INVALID_NAME; /* Reject extended characters (ASCII only 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) return FR_INVALID_NAME; /* Reject invalid DBC */
- sfn[i++] = c;
- sfn[i++] = d;
- } else { /* SBC */
- if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */
- if (IsLower(c)) c -= 0x20; /* To upper */
- sfn[i++] = c;
- }
- }
- *path = p + si; /* Return pointer to the next segment */
- if (i == 0) return FR_INVALID_NAME; /* Reject nul string */
-
- if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
- sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */
-
- return FR_OK;
-#endif /* _USE_LFN != 0 */
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Follow a file path */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
- 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 ns;
- _FDID *obj = &dp->obj;
- FATFS *fs = obj->fs;
-
-
-#if _FS_RPATH != 0
- if (*path != '/' && *path != '\\') { /* Without heading separator */
- obj->sclust = fs->cdir; /* Start from the current directory */
- } else
-#endif
- { /* With heading separator */
- while (*path == '/' || *path == '\\') path++; /* Strip heading separator */
- obj->sclust = 0; /* Start from the root directory */
- }
-#if _FS_EXFAT && _FS_RPATH != 0
- if (fs->fs_type == FS_EXFAT && obj->sclust) { /* Retrieve the sub-directory status if needed */
- DIR dj;
-
- obj->c_scl = fs->cdc_scl;
- obj->c_size = fs->cdc_size;
- obj->c_ofs = fs->cdc_ofs;
- res = load_obj_dir(&dj, obj);
- if (res != FR_OK) return res;
- obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize);
- obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
- }
-#endif
-
- if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
- dp->fn[NSFLAG] = NS_NONAME;
- res = dir_sdi(dp, 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 segment 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, stay there */
- if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
- dp->fn[NSFLAG] = NS_NONAME;
- res = FR_OK;
- } 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. */
- /* Get into the sub-directory */
- if (!(obj->attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */
- res = FR_NO_PATH; break;
- }
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- obj->c_scl = obj->sclust; /* Save containing directory information for next dir */
- obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
- obj->c_ofs = dp->blk_ofs;
- obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Open next directory */
- obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
- obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
- } else
-#endif
- {
- obj->sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */
- }
- }
- }
-
- 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 != 0 && _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:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */
- FATFS* fs, /* File system object */
- DWORD sect /* Sector# (lba) to check if it is an FAT-VBR or not */
-)
-{
- fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
- if (move_window(fs, sect) != FR_OK) return 4; /* Load boot record */
-
- if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
-
- if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) {
- if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0; /* Check "FAT" string */
- if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0; /* Check "FAT3" string */
- }
-#if _FS_EXFAT
- if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1;
-#endif
- return 2;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Find logical drive and check if the volume is mounted */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
- const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
- FATFS** rfs, /* Pointer to pointer to the found file system object */
- BYTE mode /* !=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 */
- *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 */
-
- mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */
- 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 && mode && (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 && mode && (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) return FR_DISK_ERR;
- if (SS(fs) > _MAX_SS || SS(fs) < _MIN_SS || (SS(fs) & (SS(fs) - 1))) 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-VBR as SFD */
- if (fmt == 2 || (fmt < 2 && LD2PT(vol) != 0)) { /* Not an FAT-VBR or forced partition number */
- for (i = 0; i < 4; i++) { /* Get partition offset */
- pt = fs->win + (MBR_Table + i * SZ_PTE);
- br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 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) : 3; /* Check the partition */
- } while (!LD2PT(vol) && fmt >= 2 && ++i < 4);
- }
- if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
- if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */
-
- /* An FAT volume is found. Following code initializes the file system object */
-
-#if _FS_EXFAT
- if (fmt == 1) {
- QWORD maxlba;
-
- for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */
- if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;
-
- if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT revision (Must be 1.0) */
-
- if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) /* (BPB_BytsPerSecEx must be equal to the physical sector size) */
- return FR_NO_FILESYSTEM;
-
- maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */
- if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */
-
- fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */
-
- fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */
- if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */
-
- fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */
- if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */
-
- nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */
- if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */
- fs->n_fatent = nclst + 2;
-
- /* Boundaries and Limits */
- fs->volbase = bsect;
- fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);
- fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);
- if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */
- fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);
-
- /* Check if bitmap location is in assumption (at the first cluster) */
- if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR;
- for (i = 0; i < SS(fs); i += SZDIRE) {
- if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break; /* 81 entry with cluster #2? */
- }
- if (i == SS(fs)) return FR_NO_FILESYSTEM;
-#if !_FS_READONLY
- fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
-#endif
- fmt = FS_EXFAT; /* FAT sub-type */
- } else
-#endif /* _FS_EXFAT */
- {
- if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */
-
- fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
- if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);
- fs->fsize = fasize;
-
- fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */
- if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
- fasize *= fs->n_fats; /* Number of sectors for FAT area */
-
- fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */
- if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
-
- fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
- if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */
-
- tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
- if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);
-
- nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
- if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */
-
- /* Determine the FAT sub type */
- sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */
- if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
- nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
- if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
- fmt = FS_FAT32;
- if (nclst <= MAX_FAT16) fmt = FS_FAT16;
- if (nclst <= MAX_FAT12) fmt = FS_FAT12;
-
- /* 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 (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */
- if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
- fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */
- szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
- } else {
- if (fs->n_rootdir == 0) 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)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */
-
-#if !_FS_READONLY
- /* Get FSINFO if available */
- fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
- fs->fsi_flag = 0x80;
-#if (_FS_NOFSINFO & 3) != 3
- if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */
- && ld_word(fs->win + BPB_FSInfo32) == 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_clst = ld_dword(fs->win + FSI_Free_Count);
-#endif
-#if (_FS_NOFSINFO & 2) == 0
- fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
-#endif
- }
- }
-#endif /* (_FS_NOFSINFO & 3) != 3 */
-#endif /* !_FS_READONLY */
- }
-
- fs->fs_type = fmt; /* FAT sub-type */
- fs->id = ++Fsid; /* File system mount ID */
-#if _USE_LFN == 1
- fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
-#if _FS_EXFAT
- fs->dirbuf = DirBuf; /* Static directory block working buuffer */
-#endif
-#endif
-#if _FS_RPATH != 0
- fs->cdir = 0; /* Initialize current directory */
-#endif
-#if _FS_LOCK != 0 /* Clear file lock semaphores */
- clear_lock(fs);
-#endif
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Check if the file/directory object is valid or not */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */
- _FDID* obj, /* Pointer to the _OBJ, the 1st member in the FIL/DIR object, to check validity */
- FATFS** fs /* Pointer to pointer to the owner file system object to return */
-)
-{
- FRESULT res;
-
-
- if (!obj || !obj->fs || !obj->fs->fs_type || obj->fs->id != obj->id || (disk_status(obj->fs->drv) & STA_NOINIT)) {
- *fs = 0; /* The object is invalid */
- res = FR_INVALID_OBJECT;
- } else {
- *fs = obj->fs; /* Owner file sytem object */
- ENTER_FF(obj->fs); /* Lock file system */
- res = FR_OK;
- }
- return res;
-}
-
-
-
-
-/*---------------------------------------------------------------------------
-
- Public Functions (FatFs API)
-
-----------------------------------------------------------------------------*/
-
-
-
-/*-----------------------------------------------------------------------*/
-/* 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 /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */
-)
-{
- FATFS *cfs;
- int vol;
- FRESULT res;
- const TCHAR *rp = path;
-
-
- /* Get logical drive number */
- vol = get_ldnumber(&rp);
- if (vol < 0) return FR_INVALID_DRIVE;
- cfs = FatFs[vol]; /* Pointer to fs object */
-
- if (cfs) {
-#if _FS_LOCK != 0
- 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(&path, &fs, 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;
- DIR dj;
- FATFS *fs;
-#if !_FS_READONLY
- DWORD dw, cl, bcs, clst, sc;
- FSIZE_t ofs;
-#endif
- DEF_NAMBUF
-
-
- if (!fp) return FR_INVALID_OBJECT;
-
- /* Get logical drive */
- mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND | FA_SEEKEND;
- res = find_volume(&path, &fs, mode);
- if (res == FR_OK) {
- dj.obj.fs = fs;
- INIT_NAMBUF(fs);
- res = follow_path(&dj, path); /* Follow the file path */
-#if !_FS_READONLY /* R/W configuration */
- if (res == FR_OK) {
- if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
- res = FR_INVALID_NAME;
- }
-#if _FS_LOCK != 0
- 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 != 0
- res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
-#else
- res = dir_register(&dj);
-#endif
- mode |= FA_CREATE_ALWAYS; /* File is created */
- }
- else { /* Any object is already existing */
- if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
- res = FR_DENIED;
- } else {
- if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */
- }
- }
- if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
- dw = GET_FATTIME();
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- /* Get current allocation info */
- fp->obj.fs = fs;
- fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);
- fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
- fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
- /* Initialize directory entry block */
- st_dword(fs->dirbuf + XDIR_CrtTime, dw); /* Set created time */
- fs->dirbuf[XDIR_CrtTime10] = 0;
- st_dword(fs->dirbuf + XDIR_ModTime, dw); /* Set modified time */
- fs->dirbuf[XDIR_ModTime10] = 0;
- fs->dirbuf[XDIR_Attr] = AM_ARC; /* Reset attribute */
- st_dword(fs->dirbuf + XDIR_FstClus, 0); /* Reset file allocation info */
- st_qword(fs->dirbuf + XDIR_FileSize, 0);
- st_qword(fs->dirbuf + XDIR_ValidFileSize, 0);
- fs->dirbuf[XDIR_GenFlags] = 1;
- res = store_xdir(&dj);
- if (res == FR_OK && fp->obj.sclust) { /* Remove the cluster chain if exist */
- res = remove_chain(&fp->obj, fp->obj.sclust, 0);
- fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */
- }
- } else
-#endif
- {
- /* Clean directory info */
- st_dword(dj.dir + DIR_CrtTime, dw); /* Set created time */
- st_dword(dj.dir + DIR_ModTime, dw); /* Set modified time */
- dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */
- cl = ld_clust(fs, dj.dir); /* Get cluster chain */
- st_clust(fs, dj.dir, 0); /* Reset file allocation info */
- st_dword(dj.dir + DIR_FileSize, 0);
- fs->wflag = 1;
-
- if (cl) { /* Remove the cluster chain if exist */
- dw = fs->winsect;
- res = remove_chain(&dj.obj, cl, 0);
- if (res == FR_OK) {
- res = move_window(fs, dw);
- fs->last_clst = cl - 1; /* Reuse the cluster hole */
- }
- }
- }
- }
- }
- else { /* Open an existing file */
- if (res == FR_OK) { /* Following succeeded */
- if (dj.obj.attr & AM_DIR) { /* It is a directory */
- res = FR_NO_FILE;
- } else {
- if ((mode & FA_WRITE) && (dj.obj.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_MODIFIED;
- fp->dir_sect = fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dj.dir;
-#if _FS_LOCK != 0
- fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
- if (!fp->obj.lockid) res = FR_INT_ERR;
-#endif
- }
-#else /* R/O configuration */
- if (res == FR_OK) {
- if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
- res = FR_INVALID_NAME;
- } else {
- if (dj.obj.attr & AM_DIR) { /* It is a directory */
- res = FR_NO_FILE;
- }
- }
- }
-#endif
-
- if (res == FR_OK) {
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get allocation info */
- fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
- fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
- fp->obj.c_scl = dj.obj.sclust;
- fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
- fp->obj.c_ofs = dj.blk_ofs;
- } else
-#endif
- {
- fp->obj.sclust = ld_clust(fs, dj.dir); /* Get allocation info */
- fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
- }
-#if _USE_FASTSEEK
- fp->cltbl = 0; /* Disable fast seek mode */
-#endif
- fp->obj.fs = fs; /* Validate the file object */
- fp->obj.id = fs->id;
- fp->flag = mode; /* Set file access mode */
- fp->err = 0; /* Clear error flag */
- fp->sect = 0; /* Invalidate current data sector */
- fp->fptr = 0; /* Set file pointer top of the file */
-#if !_FS_READONLY
-#if !_FS_TINY
- mem_set(fp->buf, 0, _MAX_SS); /* Clear sector buffer */
-#endif
- if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */
- fp->fptr = fp->obj.objsize; /* Offset to seek */
- bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */
- clst = fp->obj.sclust; /* Follow the cluster chain */
- for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {
- clst = get_fat(&fp->obj, clst);
- if (clst <= 1) res = FR_INT_ERR;
- if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;
- }
- fp->clust = clst;
- if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */
- if ((sc = clust2sect(fs, clst)) == 0) {
- res = FR_INT_ERR;
- } else {
- fp->sect = sc + (DWORD)(ofs / SS(fs));
-#if !_FS_TINY
- if (disk_read(fs->drv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
-#endif
- }
- }
- }
-#endif
- }
-
- FREE_NAMBUF();
- }
-
- if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */
-
- LEAVE_FF(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;
- FATFS *fs;
- DWORD clst, sect;
- FSIZE_t remain;
- UINT rcnt, cc, csect;
- BYTE *rbuff = (BYTE*)buff;
-
-
- *br = 0; /* Clear read byte counter */
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
- if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
- remain = fp->obj.objsize - 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(fs) == 0) { /* On the sector boundary? */
- csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
- if (csect == 0) { /* On the cluster boundary? */
- if (fp->fptr == 0) { /* On the top of the file? */
- clst = fp->obj.sclust; /* Follow cluster chain 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->obj, fp->clust); /* Follow cluster chain on the FAT */
- }
- }
- if (clst < 2) ABORT(fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
- fp->clust = clst; /* Update current cluster */
- }
- sect = clust2sect(fs, fp->clust); /* Get current sector */
- if (!sect) ABORT(fs, FR_INT_ERR);
- sect += csect;
- cc = btr / SS(fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Read maximum contiguous sectors directly */
- if (csect + cc > fs->csize) { /* Clip at cluster boundary */
- cc = fs->csize - csect;
- }
- if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) ABORT(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 (fs->wflag && fs->winsect - sect < cc) {
- mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
- }
-#else
- if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
- mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
- }
-#endif
-#endif
- rcnt = SS(fs) * cc; /* Number of bytes transferred */
- continue;
- }
-#if !_FS_TINY
- if (fp->sect != sect) { /* Load data sector if not in cache */
-#if !_FS_READONLY
- if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
- }
-#endif
- fp->sect = sect;
- }
- rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
- if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */
-#if _FS_TINY
- if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
- mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
-#else
- mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
-#endif
- }
-
- LEAVE_FF(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;
- FATFS *fs;
- DWORD clst, sect;
- UINT wcnt, cc, csect;
- const BYTE *wbuff = (const BYTE*)buff;
-
-
- *bw = 0; /* Clear write byte counter */
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
- if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
-
- /* Check fptr wrap-around (file size cannot reach 4GiB on FATxx) */
- if ((!_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {
- btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);
- }
-
- for ( ; btw; /* Repeat until all data written */
- wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) {
- if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
- csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */
- if (csect == 0) { /* On the cluster boundary? */
- if (fp->fptr == 0) { /* On the top of the file? */
- clst = fp->obj.sclust; /* Follow from the origin */
- if (clst == 0) { /* If no cluster is allocated, */
- clst = create_chain(&fp->obj, 0); /* create a new cluster chain */
- }
- } else { /* On the 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->obj, 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(fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
- fp->clust = clst; /* Update current cluster */
- if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */
- }
-#if _FS_TINY
- if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */
-#else
- if (fp->flag & FA_DIRTY) { /* Write-back sector cache */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- sect = clust2sect(fs, fp->clust); /* Get current sector */
- if (!sect) ABORT(fs, FR_INT_ERR);
- sect += csect;
- cc = btw / SS(fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Write maximum contiguous sectors directly */
- if (csect + cc > fs->csize) { /* Clip at cluster boundary */
- cc = fs->csize - csect;
- }
- if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
-#if _FS_MINIMIZE <= 2
-#if _FS_TINY
- if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
- mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
- fs->wflag = 0;
- }
-#else
- if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
- mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
-#endif
- wcnt = SS(fs) * cc; /* Number of bytes transferred */
- continue;
- }
-#if _FS_TINY
- if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */
- if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);
- fs->winsect = sect;
- }
-#else
- if (fp->sect != sect && /* Fill sector cache with file data */
- fp->fptr < fp->obj.objsize &&
- disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) {
- ABORT(fs, FR_DISK_ERR);
- }
-#endif
- fp->sect = sect;
- }
- wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
- if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */
-#if _FS_TINY
- if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
- mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
- fs->wflag = 1;
-#else
- mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
- fp->flag |= FA_DIRTY;
-#endif
- }
-
- fp->flag |= FA_MODIFIED; /* Set file change flag */
-
- LEAVE_FF(fs, FR_OK);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Synchronize the File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_sync (
- FIL* fp /* Pointer to the file object */
-)
-{
- FRESULT res;
- FATFS *fs;
- DWORD tm;
- BYTE *dir;
- DEF_NAMBUF
-
-
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res == FR_OK) {
- if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */
-#if !_FS_TINY
- if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- /* Update the directory entry */
- tm = GET_FATTIME(); /* Modified time */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- res = fill_fat_chain(&fp->obj); /* Create FAT chain if needed */
- if (res == FR_OK) {
- DIR dj;
-
- INIT_NAMBUF(fs);
- res = load_obj_dir(&dj, &fp->obj); /* Load directory entry block */
- if (res == FR_OK) {
- fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive bit */
- fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation info */
- st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);
- st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);
- st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);
- st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */
- fs->dirbuf[XDIR_ModTime10] = 0;
- st_dword(fs->dirbuf + XDIR_AccTime, 0);
- res = store_xdir(&dj); /* Restore it to the directory */
- if (res == FR_OK) {
- res = sync_fs(fs);
- fp->flag &= (BYTE)~FA_MODIFIED;
- }
- }
- FREE_NAMBUF();
- }
- } else
-#endif
- {
- res = move_window(fs, fp->dir_sect);
- if (res == FR_OK) {
- dir = fp->dir_ptr;
- dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
- st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation info */
- st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */
- st_dword(dir + DIR_ModTime, tm); /* Update modified time */
- st_word(dir + DIR_LstAccDate, 0);
- fs->wflag = 1;
- res = sync_fs(fs); /* Restore it to the directory */
- fp->flag &= (BYTE)~FA_MODIFIED;
- }
- }
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Close File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_close (
- FIL* fp /* Pointer to the file object to be closed */
-)
-{
- FRESULT res;
- FATFS *fs;
-
-#if !_FS_READONLY
- res = f_sync(fp); /* Flush cached data */
- if (res == FR_OK)
-#endif
- {
- res = validate(&fp->obj, &fs); /* Lock volume */
- if (res == FR_OK) {
-#if _FS_LOCK != 0
- res = dec_lock(fp->obj.lockid); /* Decrement file open counter */
- if (res == FR_OK)
-#endif
- {
- fp->obj.fs = 0; /* Invalidate file object */
- }
-#if _FS_REENTRANT
- unlock_fs(fs, FR_OK); /* Unlock volume */
-#endif
- }
- }
- return res;
-}
-
-
-
-
-#if _FS_RPATH >= 1
-/*-----------------------------------------------------------------------*/
-/* Change Current Directory or Current Drive, Get Current Directory */
-/*-----------------------------------------------------------------------*/
-
-#if _VOLUMES >= 2
-FRESULT f_chdrive (
- const TCHAR* path /* Drive number */
-)
-{
- int vol;
-
-
- /* Get logical drive number */
- vol = get_ldnumber(&path);
- if (vol < 0) return FR_INVALID_DRIVE;
-
- CurrVol = (BYTE)vol; /* Set it as current volume */
-
- return FR_OK;
-}
-#endif
-
-
-FRESULT f_chdir (
- const TCHAR* path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- DIR dj;
- FATFS *fs;
- DEF_NAMBUF
-
- /* Get logical drive */
- res = find_volume(&path, &fs, 0);
- if (res == FR_OK) {
- dj.obj.fs = fs;
- INIT_NAMBUF(fs);
- res = follow_path(&dj, path); /* Follow the path */
- if (res == FR_OK) { /* Follow completed */
- if (dj.fn[NSFLAG] & NS_NONAME) {
- fs->cdir = dj.obj.sclust; /* It is the start directory itself */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- fs->cdc_scl = dj.obj.c_scl;
- fs->cdc_size = dj.obj.c_size;
- fs->cdc_ofs = dj.obj.c_ofs;
- }
-#endif
- } else {
- if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */
- fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */
- fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
- fs->cdc_ofs = dj.blk_ofs;
- } else
-#endif
- {
- fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */
- }
- } else {
- res = FR_NO_PATH; /* Reached but a file */
- }
- }
- }
- FREE_NAMBUF();
- if (res == FR_NO_FILE) res = FR_NO_PATH;
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-#if _FS_RPATH >= 2
-FRESULT f_getcwd (
- TCHAR* buff, /* Pointer to the directory path */
- UINT len /* Size of path */
-)
-{
- FRESULT res;
- DIR dj;
- FATFS *fs;
- UINT i, n;
- DWORD ccl;
- TCHAR *tp;
- FILINFO fno;
- DEF_NAMBUF
-
-
- *buff = 0;
- /* Get logical drive */
- res = find_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */
- if (res == FR_OK) {
- dj.obj.fs = fs;
- INIT_NAMBUF(fs);
- i = len; /* Bottom of buffer (directory stack base) */
- if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */
- dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */
- while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
- res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */
- if (res != FR_OK) break;
- res = move_window(fs, dj.sect);
- if (res != FR_OK) break;
- dj.obj.sclust = ld_clust(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(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;
- get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
- for (n = 0; fno.fname[n]; n++) ;
- if (i < n + 3) {
- res = FR_NOT_ENOUGH_CORE; break;
- }
- while (n) buff[--i] = fno.fname[--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_NAMBUF();
- }
-
- LEAVE_FF(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 */
- FSIZE_t ofs /* File pointer from top of file */
-)
-{
- FRESULT res;
- FATFS *fs;
- DWORD clst, bcs, nsect;
- FSIZE_t ifptr;
-#if _USE_FASTSEEK
- DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
-#endif
-
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
-#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->obj.sclust; /* Origin 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->obj, cl);
- if (cl <= 1) ABORT(fs, FR_INT_ERR);
- if (cl == 0xFFFFFFFF) ABORT(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 < 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->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */
- fp->fptr = ofs; /* Set file pointer */
- if (ofs) {
- fp->clust = clmt_clust(fp, ofs - 1);
- dsc = clust2sect(fs, fp->clust);
- if (!dsc) ABORT(fs, FR_INT_ERR);
- dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);
- if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */
-#if !_FS_TINY
-#if !_FS_READONLY
- if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */
-#endif
- fp->sect = dsc;
- }
- }
- }
- } else
-#endif
-
- /* Normal Seek */
- {
-#if _FS_EXFAT
- if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4GiB-1 if at FATxx */
-#endif
- if (ofs > fp->obj.objsize && (_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */
- ofs = fp->obj.objsize;
- }
- ifptr = fp->fptr;
- fp->fptr = nsect = 0;
- if (ofs) {
- bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */
- if (ifptr > 0 &&
- (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
- fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */
- ofs -= fp->fptr;
- clst = fp->clust;
- } else { /* When seek to back cluster, */
- clst = fp->obj.sclust; /* start from the first cluster */
-#if !_FS_READONLY
- if (clst == 0) { /* If no cluster chain, create a new chain */
- clst = create_chain(&fp->obj, 0);
- if (clst == 1) ABORT(fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
- fp->obj.sclust = clst;
- }
-#endif
- fp->clust = clst;
- }
- if (clst != 0) {
- while (ofs > bcs) { /* Cluster following loop */
- ofs -= bcs; fp->fptr += bcs;
-#if !_FS_READONLY
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
- if (_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */
- fp->obj.objsize = fp->fptr;
- fp->flag |= FA_MODIFIED;
- }
- clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */
- if (clst == 0) { /* Clip file size in case of disk full */
- ofs = 0; break;
- }
- } else
-#endif
- {
- clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */
- }
- if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
- if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);
- fp->clust = clst;
- }
- fp->fptr += ofs;
- if (ofs % SS(fs)) {
- nsect = clust2sect(fs, clst); /* Current sector */
- if (!nsect) ABORT(fs, FR_INT_ERR);
- nsect += (DWORD)(ofs / SS(fs));
- }
- }
- }
- if (!_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */
- fp->obj.objsize = fp->fptr;
- fp->flag |= FA_MODIFIED;
- }
- if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */
-#if !_FS_TINY
-#if !_FS_READONLY
- if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
-#endif
- fp->sect = nsect;
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-#if _FS_MINIMIZE <= 1
-/*-----------------------------------------------------------------------*/
-/* Create a Directory Object */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_opendir (
- DIR* dp, /* Pointer to directory object to create */
- const TCHAR* path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- FATFS *fs;
- _FDID *obj;
- DEF_NAMBUF
-
-
- if (!dp) return FR_INVALID_OBJECT;
-
- /* Get logical drive */
- obj = &dp->obj;
- res = find_volume(&path, &fs, 0);
- if (res == FR_OK) {
- obj->fs = fs;
- INIT_NAMBUF(fs);
- res = follow_path(dp, path); /* Follow the path to the directory */
- if (res == FR_OK) { /* Follow completed */
- if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */
- if (obj->attr & AM_DIR) { /* This object is a sub-directory */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- obj->c_scl = obj->sclust; /* Save containing directory inforamation */
- obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
- obj->c_ofs = dp->blk_ofs;
- obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object location and status */
- obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
- obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
- } else
-#endif
- {
- obj->sclust = ld_clust(fs, dp->dir); /* Get object location */
- }
- } else { /* This object is a file */
- res = FR_NO_PATH;
- }
- }
- if (res == FR_OK) {
- obj->id = fs->id;
- res = dir_sdi(dp, 0); /* Rewind directory */
-#if _FS_LOCK != 0
- if (res == FR_OK) {
- if (obj->sclust) {
- obj->lockid = inc_lock(dp, 0); /* Lock the sub directory */
- if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES;
- } else {
- obj->lockid = 0; /* Root directory need not to be locked */
- }
- }
-#endif
- }
- }
- FREE_NAMBUF();
- if (res == FR_NO_FILE) res = FR_NO_PATH;
- }
- if (res != FR_OK) obj->fs = 0; /* Invalidate the directory object if function faild */
-
- LEAVE_FF(fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Close Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_closedir (
- DIR *dp /* Pointer to the directory object to be closed */
-)
-{
- FRESULT res;
- FATFS *fs;
-
-
- res = validate(&dp->obj, &fs); /* Check validity of the file object */
- if (res == FR_OK) {
-#if _FS_LOCK != 0
- if (dp->obj.lockid) { /* Decrement sub-directory open counter */
- res = dec_lock(dp->obj.lockid);
- }
- if (res == FR_OK)
-#endif
- {
- dp->obj.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 (
- DIR* dp, /* Pointer to the open directory object */
- FILINFO* fno /* Pointer to file information to return */
-)
-{
- FRESULT res;
- FATFS *fs;
- DEF_NAMBUF
-
-
- res = validate(&dp->obj, &fs); /* Check validity of the directory object */
- if (res == FR_OK) {
- if (!fno) {
- res = dir_sdi(dp, 0); /* Rewind the directory object */
- } else {
- INIT_NAMBUF(fs);
- res = dir_read(dp, 0); /* Read an item */
- if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */
- 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) res = FR_OK; /* Ignore end of directory now */
- }
- FREE_NAMBUF();
- }
- }
- LEAVE_FF(fs, res);
-}
-
-
-
-#if _USE_FIND
-/*-----------------------------------------------------------------------*/
-/* Find Next File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_findnext (
- 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 (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */
-#if _USE_LFN != 0 && _USE_FIND == 2
- if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */
-#endif
- }
- return res;
-}
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Find First File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_findfirst (
- 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;
- DIR dj;
- DEF_NAMBUF
-
-
- /* Get logical drive */
- res = find_volume(&path, &dj.obj.fs, 0);
- if (res == FR_OK) {
- INIT_NAMBUF(dj.obj.fs);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) { /* Follow completed */
- if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */
- res = FR_INVALID_NAME;
- } else { /* Found an object */
- if (fno) get_fileinfo(&dj, fno);
- }
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(dj.obj.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 *p;
- _FDID obj;
-
-
- /* Get logical drive */
- res = find_volume(&path, &fs, 0);
- if (res == FR_OK) {
- *fatfs = fs; /* Return ptr to the fs object */
- /* If free_clst is valid, return it without full cluster scan */
- if (fs->free_clst <= fs->n_fatent - 2) {
- *nclst = fs->free_clst;
- } else {
- /* Get number of free clusters */
- nfree = 0;
- if (fs->fs_type == FS_FAT12) { /* FAT12: Sector unalighed FAT entries */
- clst = 2; obj.fs = fs;
- do {
- stat = get_fat(&obj, 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 {
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan bitmap table */
- BYTE bm;
- UINT b;
-
- clst = fs->n_fatent - 2;
- sect = fs->database;
- i = 0;
- do {
- if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break;
- for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {
- if (!(bm & 1)) nfree++;
- bm >>= 1;
- }
- i = (i + 1) % SS(fs);
- } while (clst);
- } else
-#endif
- { /* FAT16/32: Sector alighed FAT entries */
- clst = fs->n_fatent; sect = fs->fatbase;
- i = 0; p = 0;
- do {
- if (i == 0) {
- res = move_window(fs, sect++);
- if (res != FR_OK) break;
- p = fs->win;
- i = SS(fs);
- }
- if (fs->fs_type == 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);
- }
- }
- *nclst = nfree; /* Return the free clusters */
- fs->free_clst = nfree; /* Now free_clst is valid */
- fs->fsi_flag |= 1; /* FSInfo is to be updated */
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Truncate File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_truncate (
- FIL* fp /* Pointer to the file object */
-)
-{
- FRESULT res;
- FATFS *fs;
- DWORD ncl;
-
-
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
- if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
-
- if (fp->obj.objsize > fp->fptr) {
- if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
- res = remove_chain(&fp->obj, fp->obj.sclust, 0);
- fp->obj.sclust = 0;
- } else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(&fp->obj, fp->clust);
- res = FR_OK;
- if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (ncl == 1) res = FR_INT_ERR;
- if (res == FR_OK && ncl < fs->n_fatent) {
- res = remove_chain(&fp->obj, ncl, fp->clust);
- }
- }
- fp->obj.objsize = fp->fptr; /* Set file size to current R/W point */
- fp->flag |= FA_MODIFIED;
-#if !_FS_TINY
- if (res == FR_OK && (fp->flag & FA_DIRTY)) {
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {
- res = FR_DISK_ERR;
- } else {
- fp->flag &= (BYTE)~FA_DIRTY;
- }
- }
-#endif
- if (res != FR_OK) ABORT(fs, res);
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Delete a File/Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_unlink (
- const TCHAR* path /* Pointer to the file or directory path */
-)
-{
- FRESULT res;
- DIR dj, sdj;
- DWORD dclst = 0;
- FATFS *fs;
-#if _FS_EXFAT
- _FDID obj;
-#endif
- DEF_NAMBUF
-
-
- /* Get logical drive */
- res = find_volume(&path, &fs, FA_WRITE);
- dj.obj.fs = fs;
- if (res == FR_OK) {
- INIT_NAMBUF(fs);
- 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 != 0
- if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */
-#endif
- if (res == FR_OK) { /* The object is accessible */
- if (dj.fn[NSFLAG] & NS_NONAME) {
- res = FR_INVALID_NAME; /* Cannot remove the origin directory */
- } else {
- if (dj.obj.attr & AM_RDO) {
- res = FR_DENIED; /* Cannot remove R/O object */
- }
- }
- if (res == FR_OK) {
-#if _FS_EXFAT
- obj.fs = fs;
- if (fs->fs_type == FS_EXFAT) {
- obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus);
- obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
- obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
- } else
-#endif
- {
- dclst = ld_clust(fs, dj.dir);
- }
- if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory ? */
-#if _FS_RPATH != 0
- if (dclst == fs->cdir) { /* Is it the current directory? */
- res = FR_DENIED;
- } else
-#endif
- {
- sdj.obj.fs = fs; /* Open the sub-directory */
- sdj.obj.sclust = dclst;
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- sdj.obj.objsize = obj.objsize;
- sdj.obj.stat = obj.stat;
- }
-#endif
- res = dir_sdi(&sdj, 0);
- if (res == FR_OK) {
- res = dir_read(&sdj, 0); /* Read an item */
- if (res == FR_OK) res = FR_DENIED; /* Not empty? */
- if (res == FR_NO_FILE) res = FR_OK; /* Empty? */
- }
- }
- }
- }
- if (res == FR_OK) {
- res = dir_remove(&dj); /* Remove the directory entry */
- if (res == FR_OK && dclst) { /* Remove the cluster chain if exist */
-#if _FS_EXFAT
- res = remove_chain(&obj, dclst, 0);
-#else
- res = remove_chain(&dj.obj, dclst, 0);
-#endif
- }
- if (res == FR_OK) res = sync_fs(fs);
- }
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Create a Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_mkdir (
- const TCHAR* path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- DIR dj;
- FATFS *fs;
- BYTE *dir;
- UINT n;
- DWORD dsc, dcl, pcl, tm;
- DEF_NAMBUF
-
-
- /* Get logical drive */
- res = find_volume(&path, &fs, FA_WRITE);
- dj.obj.fs = fs;
- if (res == FR_OK) {
- INIT_NAMBUF(fs);
- 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.obj, 0); /* Allocate a cluster for the new directory table */
- dj.obj.objsize = (DWORD)fs->csize * SS(fs);
- 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) res = sync_window(fs); /* Flush FAT */
- tm = GET_FATTIME();
- if (res == FR_OK) { /* Initialize the new directory table */
- dsc = clust2sect(fs, dcl);
- dir = fs->win;
- mem_set(dir, 0, SS(fs));
- if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
- mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
- dir[DIR_Name] = '.';
- dir[DIR_Attr] = AM_DIR;
- st_dword(dir + DIR_ModTime, tm);
- st_clust(fs, dir, dcl);
- mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */
- dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
- if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0;
- st_clust(fs, dir + SZDIRE, pcl);
- }
- for (n = fs->csize; n; n--) { /* Write dot entries and clear following sectors */
- fs->winsect = dsc++;
- fs->wflag = 1;
- res = sync_window(fs);
- if (res != FR_OK) break;
- mem_set(dir, 0, SS(fs));
- }
- }
- if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
- if (res == FR_OK) {
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */
- st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */
- st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */
- st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize); /* File size needs to be valid */
- st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize);
- fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag (contiguous) */
- fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */
- res = store_xdir(&dj);
- } else
-#endif
- {
- dir = dj.dir;
- st_dword(dir + DIR_ModTime, tm); /* Created time */
- st_clust(fs, dir, dcl); /* Table start cluster */
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- fs->wflag = 1;
- }
- if (res == FR_OK) res = sync_fs(fs);
- } else {
- remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */
- }
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Rename a File/Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_rename (
- const TCHAR* path_old, /* Pointer to the object name to be renamed */
- const TCHAR* path_new /* Pointer to the new name */
-)
-{
- FRESULT res;
- DIR djo, djn;
- FATFS *fs;
- BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir;
- DWORD dw;
- DEF_NAMBUF
-
-
- get_ldnumber(&path_new); /* Ignore drive number of new name */
- res = find_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */
- if (res == FR_OK) {
- djo.obj.fs = fs;
- INIT_NAMBUF(fs);
- res = follow_path(&djo, path_old); /* Check old object */
- if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */
-#if _FS_LOCK != 0
- if (res == FR_OK) res = chk_lock(&djo, 2);
-#endif
- if (res == FR_OK) { /* Object to be renamed is found */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* At exFAT */
- BYTE nf, nn;
- WORD nh;
-
- mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */
- mem_cpy(&djn, &djo, sizeof djo);
- res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
- if (res == FR_OK) { /* Is new name already in use by any other object? */
- res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
- }
- 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) {
- nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];
- nh = ld_word(fs->dirbuf + XDIR_NameHash);
- mem_cpy(fs->dirbuf, buf, SZDIRE * 2);
- fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;
- st_word(fs->dirbuf + XDIR_NameHash, nh);
-/* Start of critical section where any interruption can cause a cross-link */
- res = store_xdir(&djn);
- }
- }
- } else
-#endif
- { /* At FAT12/FAT16/FAT32 */
- mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about the object except name */
- mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */
- res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
- if (res == FR_OK) { /* Is new name already in use by any other object? */
- res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
- }
- 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) {
- dir = djn.dir; /* Copy information about object except name */
- mem_cpy(dir + 13, buf + 2, 19);
- dir[DIR_Attr] = buf[0] | AM_ARC;
- fs->wflag = 1;
- if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */
- dw = clust2sect(fs, ld_clust(fs, dir));
- if (!dw) {
- res = FR_INT_ERR;
- } else {
-/* Start of critical section where any interruption can cause a cross-link */
- res = move_window(fs, dw);
- dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */
- if (res == FR_OK && dir[1] == '.') {
- st_clust(fs, dir, djn.obj.sclust);
- fs->wflag = 1;
- }
- }
- }
- }
- }
- }
- if (res == FR_OK) {
- res = dir_remove(&djo); /* Remove old entry */
- if (res == FR_OK) {
- res = sync_fs(fs);
- }
- }
-/* End of critical section */
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(fs, res);
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _FS_MINIMIZE == 0 */
-#endif /* _FS_MINIMIZE <= 1 */
-#endif /* _FS_MINIMIZE <= 2 */
-
-
-
-#if _USE_CHMOD && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* 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;
- DIR dj;
- FATFS *fs;
- DEF_NAMBUF
-
-
- res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */
- dj.obj.fs = fs;
- if (res == FR_OK) {
- INIT_NAMBUF(fs);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
- if (res == FR_OK) {
- mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */
- res = store_xdir(&dj);
- } else
-#endif
- {
- dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
- fs->wflag = 1;
- }
- if (res == FR_OK) res = sync_fs(fs);
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(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;
- DIR dj;
- FATFS *fs;
- DEF_NAMBUF
-
-
- res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */
- dj.obj.fs = fs;
- if (res == FR_OK) {
- INIT_NAMBUF(fs);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
- if (res == FR_OK) {
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
- res = store_xdir(&dj);
- } else
-#endif
- {
- st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
- fs->wflag = 1;
- }
- if (res == FR_OK) res = sync_fs(fs);
- }
- FREE_NAMBUF();
- }
-
- LEAVE_FF(fs, res);
-}
-
-#endif /* _USE_CHMOD && !_FS_READONLY */
-
-
-
-#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;
- DIR dj;
- FATFS *fs;
- UINT si, di;
-#if _LFN_UNICODE || _FS_EXFAT
- WCHAR w;
-#endif
-
- /* Get logical drive */
- res = find_volume(&path, &fs, 0);
-
- /* Get volume label */
- if (res == FR_OK && label) {
- dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */
- res = dir_sdi(&dj, 0);
- if (res == FR_OK) {
- res = dir_read(&dj, 1); /* Find a volume label entry */
- if (res == FR_OK) {
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- for (si = di = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */
- w = ld_word(dj.dir + XDIR_Label + si * 2);
-#if _LFN_UNICODE
- label[di++] = w;
-#else
- w = ff_convert(w, 0); /* Unicode -> OEM */
- if (w == 0) w = '?'; /* Replace wrong character */
- if (_DF1S && w >= 0x100) label[di++] = (char)(w >> 8);
- label[di++] = (char)w;
-#endif
- }
- label[di] = 0;
- } else
-#endif
- {
- si = di = 0; /* Extract volume label from AM_VOL entry with code comversion */
- do {
-#if _LFN_UNICODE
- w = (si < 11) ? dj.dir[si++] : ' ';
- if (IsDBCS1(w) && si < 11 && IsDBCS2(dj.dir[si])) {
- w = w << 8 | dj.dir[si++];
- }
- label[di++] = ff_convert(w, 1); /* OEM -> Unicode */
-#else
- label[di++] = dj.dir[si++];
-#endif
- } while (di < 11);
- do { /* Truncate trailing spaces */
- label[di] = 0;
- if (di == 0) break;
- } while (label[--di] == ' ');
- }
- }
- }
- if (res == FR_NO_FILE) { /* No label entry and return nul string */
- label[0] = 0;
- res = FR_OK;
- }
- }
-
- /* Get volume serial number */
- if (res == FR_OK && vsn) {
- res = move_window(fs, fs->volbase);
- if (res == FR_OK) {
- switch (fs->fs_type) {
- case FS_EXFAT: di = BPB_VolIDEx; break;
- case FS_FAT32: di = BS_VolID32; break;
- default: di = BS_VolID;
- }
- *vsn = ld_dword(fs->win + di);
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Set Volume Label */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_setlabel (
- const TCHAR* label /* Pointer to the volume label to set */
-)
-{
- FRESULT res;
- DIR dj;
- FATFS *fs;
- BYTE dirvn[22];
- UINT i, j, slen;
- WCHAR w;
- static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F";
-
-
- /* Get logical drive */
- res = find_volume(&label, &fs, FA_WRITE);
- if (res != FR_OK) LEAVE_FF(fs, res);
- dj.obj.fs = fs;
-
- /* Get length of given volume label */
- for (slen = 0; (UINT)label[slen] >= ' '; slen++) ; /* Get name length */
-
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
- for (i = j = 0; i < slen; ) { /* Create volume label in directory form */
- w = label[i++];
-#if !_LFN_UNICODE
- if (IsDBCS1(w)) {
- w = (i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
- }
- w = ff_convert(w, 1);
-#endif
- if (w == 0 || chk_chr(badchr, w) || j == 22) { /* Check validity check validity of the volume label */
- LEAVE_FF(fs, FR_INVALID_NAME);
- }
- st_word(dirvn + j, w); j += 2;
- }
- slen = j;
- } else
-#endif
- { /* On the FAT12/16/32 volume */
- for ( ; slen && label[slen - 1] == ' '; slen--) ; /* Remove trailing spaces */
- if (slen) { /* Is there a volume label to be set? */
- dirvn[0] = 0; i = j = 0; /* Create volume label in directory form */
- do {
-#if _LFN_UNICODE
- w = ff_convert(ff_wtoupper(label[i++]), 0);
-#else
- w = (BYTE)label[i++];
- if (IsDBCS1(w)) {
- w = (j < 10 && i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
- }
-#if _USE_LFN != 0
- 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 == 0 || chk_chr(badchr, w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */
- LEAVE_FF(fs, FR_INVALID_NAME);
- }
- if (w >= 0x100) dirvn[j++] = (BYTE)(w >> 8);
- dirvn[j++] = (BYTE)w;
- } while (i < slen);
- while (j < 11) dirvn[j++] = ' '; /* Fill remaining name field */
- if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
- }
- }
-
- /* Set volume label */
- dj.obj.sclust = 0; /* Open root directory */
- res = dir_sdi(&dj, 0);
- if (res == FR_OK) {
- res = dir_read(&dj, 1); /* Get volume label entry */
- if (res == FR_OK) {
- if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
- dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2); /* Change the volume label */
- mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
- } else {
- if (slen) {
- mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */
- } else {
- dj.dir[DIR_Name] = DDEM; /* Remove the volume label */
- }
- }
- fs->wflag = 1;
- res = sync_fs(fs);
- } else { /* No volume label entry is found or error */
- if (res == FR_NO_FILE) {
- res = FR_OK;
- if (slen) { /* Create a volume label entry */
- res = dir_alloc(&dj, 1); /* Allocate an entry */
- if (res == FR_OK) {
- mem_set(dj.dir, 0, SZDIRE); /* Clear the entry */
- if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
- dj.dir[XDIR_Type] = 0x83; /* Create 83 entry */
- dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2);
- mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
- } else {
- dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */
- mem_cpy(dj.dir, dirvn, 11);
- }
- fs->wflag = 1;
- res = sync_fs(fs);
- }
- }
- }
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _USE_LABEL */
-
-
-
-#if _USE_EXPAND && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Allocate a Contiguous Blocks to the File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_expand (
- FIL* fp, /* Pointer to the file object */
- FSIZE_t fsz, /* File size to be expanded to */
- BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */
-)
-{
- FRESULT res;
- FATFS *fs;
- DWORD n, clst, stcl, scl, ncl, tcl, lclst;
-
-
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
- if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);
-#if _FS_EXFAT
- if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */
-#endif
- n = (DWORD)fs->csize * SS(fs); /* Cluster size */
- tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */
- stcl = fs->last_clst; lclst = 0;
- if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;
-
-#if _FS_EXFAT
- if (fs->fs_type == FS_EXFAT) {
- scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */
- if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */
- if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (res == FR_OK) {
- if (opt) {
- res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */
- lclst = scl + tcl - 1;
- } else {
- lclst = scl - 1;
- }
- }
- } else
-#endif
- {
- scl = clst = stcl; ncl = 0;
- for (;;) { /* Find a contiguous cluster block */
- n = get_fat(&fp->obj, clst);
- if (++clst >= fs->n_fatent) clst = 2;
- if (n == 1) { res = FR_INT_ERR; break; }
- if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
- if (n == 0) { /* Is it a free cluster? */
- if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */
- } else {
- scl = clst; ncl = 0; /* Not a free cluster */
- }
- if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */
- }
- if (res == FR_OK) {
- if (opt) {
- for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */
- res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);
- if (res != FR_OK) break;
- lclst = clst;
- }
- } else {
- lclst = scl - 1;
- }
- }
- }
-
- if (res == FR_OK) {
- fs->last_clst = lclst; /* Set suggested start cluster to start next */
- if (opt) {
- fp->obj.sclust = scl; /* Update object allocation information */
- fp->obj.objsize = fsz;
- if (_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */
- fp->flag |= FA_MODIFIED;
- if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
- fs->free_clst -= tcl;
- fs->fsi_flag |= 1;
- }
- }
- }
-
- LEAVE_FF(fs, res);
-}
-
-#endif /* _USE_EXPAND && !_FS_READONLY */
-
-
-
-#if _USE_FORWARD
-/*-----------------------------------------------------------------------*/
-/* Forward data to the stream directly */
-/*-----------------------------------------------------------------------*/
-
-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;
- FATFS *fs;
- DWORD clst, sect;
- FSIZE_t remain;
- UINT rcnt, csect;
- BYTE *dbuf;
-
-
- *bf = 0; /* Clear transfer byte counter */
- res = validate(&fp->obj, &fs); /* Check validity of the file object */
- if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
- if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
-
- remain = fp->obj.objsize - 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 goes busy */
- fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
- csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
- if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
- if (csect == 0) { /* On the cluster boundary? */
- clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->obj.sclust : get_fat(&fp->obj, fp->clust);
- if (clst <= 1) ABORT(fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
- fp->clust = clst; /* Update current cluster */
- }
- }
- sect = clust2sect(fs, fp->clust); /* Get current data sector */
- if (!sect) ABORT(fs, FR_INT_ERR);
- sect += csect;
-#if _FS_TINY
- if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */
- dbuf = fs->win;
-#else
- if (fp->sect != sect) { /* Fill sector cache with file data */
-#if !_FS_READONLY
- if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
- if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- fp->flag &= (BYTE)~FA_DIRTY;
- }
-#endif
- if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
- }
- dbuf = fp->buf;
-#endif
- fp->sect = sect;
- rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
- if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */
- rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */
- if (!rcnt) ABORT(fs, FR_INT_ERR);
- }
-
- LEAVE_FF(fs, FR_OK);
-}
-#endif /* _USE_FORWARD */
-
-
-
-#if _USE_MKFS && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Create FAT file system on the logical drive */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_mkfs (
- const TCHAR* path, /* Logical drive number */
- BYTE opt, /* Format option */
- DWORD au, /* Size of allocation unit [byte] */
- void* work, /* Pointer to working buffer */
- UINT len /* Size of working buffer */
-)
-{
- const UINT n_fats = 1; /* Number of FATs for FAT12/16/32 volume (1 or 2) */
- const UINT n_rootdir = 512; /* Number of root directory entries for FAT12/16 volume */
- static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT12/16 volume (4Ks unit) */
- static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */
- BYTE fmt, sys, *buf, *pte, pdrv, part;
- WORD ss;
- DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n;
- DWORD b_vol, b_fat, b_data; /* Base LBA for volume, fat, data */
- DWORD sz_vol, sz_rsv, sz_fat, sz_dir; /* Size for volume, fat, dir, data */
- UINT i;
- int vol;
- DSTATUS stat;
-#if _USE_TRIM || _FS_EXFAT
- DWORD tbl[3];
-#endif
-
-
- /* Check mounted drive and clear work area */
- vol = get_ldnumber(&path); /* Get target logical drive */
- if (vol < 0) return FR_INVALID_DRIVE;
- if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear mounted volume */
- pdrv = LD2PD(vol); /* Physical drive */
- part = LD2PT(vol); /* Partition (0:create as new, 1-4:get from partition table) */
-
- /* Check physical drive status */
- 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_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Erase block to align data area */
-#if _MAX_SS != _MIN_SS /* Get sector size of the medium */
- if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
- if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
-#else
- ss = _MAX_SS;
-#endif
- if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */
- au /= ss; /* Cluster size in unit of sector */
-
- /* Get working buffer */
- buf = (BYTE*)work; /* Working buffer */
- sz_buf = len / ss; /* Size of working buffer (sector) */
- szb_buf = sz_buf * ss; /* Size of working buffer (byte) */
- if (!szb_buf) return FR_MKFS_ABORTED;
-
- /* Determine where the volume to be located (b_vol, sz_vol) */
- if (_MULTI_PARTITION && part != 0) {
- /* Get partition information from partition table in the MBR */
- if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */
- if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */
- pte = buf + (MBR_Table + (part - 1) * SZ_PTE);
- if (!pte[PTE_System]) return FR_MKFS_ABORTED; /* No partition? */
- b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */
- sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */
- } else {
- /* Create a single-partition in this function */
- if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) return FR_DISK_ERR;
- b_vol = (opt & FM_SFD) ? 0 : 63; /* Volume start sector */
- if (sz_vol < b_vol) return FR_MKFS_ABORTED;
- sz_vol -= b_vol; /* Volume size */
- }
- if (sz_vol < 128) return FR_MKFS_ABORTED; /* Check if volume size is >=128s */
-
- /* Pre-determine the FAT type */
- do {
- if (_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */
- if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) { /* exFAT only, vol >= 64Ms or au > 128s ? */
- fmt = FS_EXFAT; break;
- }
- }
- if (au > 128) return FR_INVALID_PARAMETER; /* Too large au for FAT/FAT32 */
- if (opt & FM_FAT32) { /* FAT32 possible? */
- if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) { /* FAT32 only or no-FAT? */
- fmt = FS_FAT32; break;
- }
- }
- if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER; /* no-FAT? */
- fmt = FS_FAT16;
- } while (0);
-
-#if _FS_EXFAT
- if (fmt == FS_EXFAT) { /* Create an exFAT volume */
- DWORD szb_bit, szb_case, sum, nb, cl;
- WCHAR ch, si;
- UINT j, st;
- BYTE b;
-
- if (sz_vol < 0x1000) return FR_MKFS_ABORTED; /* Too small volume? */
-#if _USE_TRIM
- tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */
- disk_ioctl(pdrv, CTRL_TRIM, tbl);
-#endif
- /* Determine FAT location, data location and number of clusters */
- if (!au) { /* au auto-selection */
- au = 8;
- if (sz_vol >= 0x80000) au = 64; /* >= 512Ks */
- if (sz_vol >= 0x4000000) au = 256; /* >= 64Ms */
- }
- b_fat = b_vol + 32; /* FAT start at offset 32 */
- sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */
- b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */
- if (b_data >= sz_vol / 2) return FR_MKFS_ABORTED; /* Too small volume? */
- n_clst = (sz_vol - (b_data - b_vol)) / au; /* Number of clusters */
- if (n_clst <16) return FR_MKFS_ABORTED; /* Too few clusters? */
- if (n_clst > MAX_EXFAT) return FR_MKFS_ABORTED; /* Too many clusters? */
-
- szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */
- tbl[0] = (szb_bit + au * ss - 1) / (au * ss); /* Number of allocation bitmap clusters */
-
- /* Create a compressed up-case table */
- sect = b_data + au * tbl[0]; /* Table start sector */
- sum = 0; /* Table checksum to be stored in the 82 entry */
- st = si = i = j = szb_case = 0;
- do {
- switch (st) {
- case 0:
- ch = ff_wtoupper(si); /* Get an up-case char */
- if (ch != si) {
- si++; break; /* Store the up-case char if exist */
- }
- for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */
- if (j >= 128) {
- ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */
- }
- st = 1; /* Do not compress short run */
- /* continue */
- case 1:
- ch = si++; /* Fill the short run */
- if (--j == 0) st = 0;
- break;
- default:
- ch = (WCHAR)j; si += j; /* Number of chars to skip */
- st = 0;
- }
- sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */
- sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);
- i += 2; szb_case += 2;
- if (!si || i == szb_buf) { /* Write buffered data when buffer full or end of process */
- n = (i + ss - 1) / ss;
- if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
- sect += n; i = 0;
- }
- } while (si);
- tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case table clusters */
- tbl[2] = 1; /* Number of root dir clusters */
-
- /* Initialize the allocation bitmap */
- sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */
- nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */
- do {
- mem_set(buf, 0, szb_buf);
- for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ;
- for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ;
- n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
- if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
- sect += n; nsect -= n;
- } while (nsect);
-
- /* Initialize the FAT */
- sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */
- j = nb = cl = 0;
- do {
- mem_set(buf, 0, szb_buf); i = 0; /* Clear work area and reset write index */
- if (cl == 0) { /* Set entry 0 and 1 */
- st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;
- st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;
- }
- do { /* Create chains of bitmap, up-case and root dir */
- while (nb && i < szb_buf) { /* Create a chain */
- st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);
- i += 4; cl++; nb--;
- }
- if (!nb && j < 3) nb = tbl[j++]; /* Next chain */
- } while (nb && i < szb_buf);
- n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
- if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
- sect += n; nsect -= n;
- } while (nsect);
-
- /* Initialize the root directory */
- mem_set(buf, 0, szb_buf);
- buf[SZDIRE * 0 + 0] = 0x83; /* 83 entry (volume label) */
- buf[SZDIRE * 1 + 0] = 0x81; /* 81 entry (allocation bitmap) */
- st_dword(buf + SZDIRE * 1 + 20, 2);
- st_dword(buf + SZDIRE * 1 + 24, szb_bit);
- buf[SZDIRE * 2 + 0] = 0x82; /* 82 entry (up-case table) */
- st_dword(buf + SZDIRE * 2 + 4, sum);
- st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]);
- st_dword(buf + SZDIRE * 2 + 24, szb_case);
- sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */
- do { /* Fill root directory sectors */
- n = (nsect > sz_buf) ? sz_buf : nsect;
- if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
- mem_set(buf, 0, ss);
- sect += n; nsect -= n;
- } while (nsect);
-
- /* Create two set of the exFAT VBR blocks */
- sect = b_vol;
- for (n = 0; n < 2; n++) {
- /* Main record (+0) */
- mem_set(buf, 0, ss);
- mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */
- st_dword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */
- st_dword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */
- st_dword(buf + BPB_FatOfsEx, b_fat - b_vol); /* FAT offset [sector] */
- st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */
- st_dword(buf + BPB_DataOfsEx, b_data - b_vol); /* Data offset [sector] */
- st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */
- st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */
- st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */
- st_word(buf + BPB_FSVerEx, 0x100); /* File system version (1.00) */
- for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */
- for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */
- buf[BPB_NumFATsEx] = 1; /* Number of FATs */
- buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */
- st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */
- st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */
- for (i = sum = 0; i < ss; i++) { /* VBR checksum */
- if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);
- }
- if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
- /* Extended bootstrap record (+1..+8) */
- mem_set(buf, 0, ss);
- st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */
- for (j = 1; j < 9; j++) {
- for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
- if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
- }
- /* OEM/Reserved record (+9..+10) */
- mem_set(buf, 0, ss);
- for ( ; j < 11; j++) {
- for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
- if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
- }
- /* Sum record (+11) */
- for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */
- if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
- }
-
- } else
-#endif /* _FS_EXFAT */
- { /* Create an FAT12/16/32 volume */
- do {
- pau = au;
- /* Pre-determine number of clusters and FAT sub-type */
- if (fmt == FS_FAT32) { /* FAT32 volume */
- if (!pau) { /* au auto-selection */
- n = sz_vol / 0x20000; /* Volume size in unit of 128KS */
- for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */
- }
- n_clst = sz_vol / pau; /* Number of clusters */
- sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */
- sz_rsv = 32; /* Number of reserved sectors */
- sz_dir = 0; /* No static directory */
- if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) return FR_MKFS_ABORTED;
- } else { /* FAT12/16 volume */
- if (!pau) { /* au auto-selection */
- n = sz_vol / 0x1000; /* Volume size in unit of 4KS */
- for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */
- }
- n_clst = sz_vol / pau;
- if (n_clst > MAX_FAT12) {
- n = n_clst * 2 + 4; /* FAT size [byte] */
- } else {
- fmt = FS_FAT12;
- n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */
- }
- sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */
- sz_rsv = 1; /* Number of reserved sectors */
- sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */
- }
- b_fat = b_vol + sz_rsv; /* FAT base */
- b_data = b_fat + sz_fat * n_fats + sz_dir; /* Data base */
-
- /* Align data base to erase block boundary (for flash memory media) */
- n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data; /* Next nearest erase block from current data base */
- if (fmt == FS_FAT32) { /* FAT32: Move FAT base */
- sz_rsv += n; b_fat += n;
- } else { /* FAT12/16: Expand FAT size */
- sz_fat += n / n_fats;
- }
-
- /* Determine number of clusters and final check of validity of the FAT sub-type */
- if (sz_vol < b_data + pau * 16 - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
- n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau;
- if (fmt == FS_FAT32) {
- if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32 */
- if (!au && (au = pau / 2) != 0) continue; /* Adjust cluster size and retry */
- return FR_MKFS_ABORTED;
- }
- }
- if (fmt == FS_FAT16) {
- if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */
- if (!au && (pau * 2) <= 64) {
- au = pau * 2; continue; /* Adjust cluster size and retry */
- }
- if ((opt & FM_FAT32)) {
- fmt = FS_FAT32; continue; /* Switch type to FAT32 and retry */
- }
- if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
- return FR_MKFS_ABORTED;
- }
- if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */
- if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
- return FR_MKFS_ABORTED;
- }
- }
- if (fmt == FS_FAT12 && n_clst > MAX_FAT12) return FR_MKFS_ABORTED; /* Too many clusters for FAT12 */
-
- /* Ok, it is the valid cluster configuration */
- break;
- } while (1);
-
-#if _USE_TRIM
- tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */
- disk_ioctl(pdrv, CTRL_TRIM, tbl);
-#endif
- /* Create FAT VBR */
- mem_set(buf, 0, ss);
- mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */
- st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */
- buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */
- st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */
- buf[BPB_NumFATs] = (BYTE)n_fats; /* Number of FATs */
- st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir)); /* Number of root directory entries */
- if (sz_vol < 0x10000) {
- st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */
- } else {
- st_dword(buf + BPB_TotSec32, sz_vol); /* Volume size in 32-bit LBA */
- }
- buf[BPB_Media] = 0xF8; /* Media descriptor byte */
- st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */
- st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */
- st_dword(buf + BPB_HiddSec, b_vol); /* Volume offset in the physical drive [sector] */
- if (fmt == FS_FAT32) {
- st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */
- st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */
- st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */
- st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */
- st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */
- buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */
- buf[BS_BootSig32] = 0x29; /* Extended boot signature */
- mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
- } else {
- st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */
- st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */
- buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */
- buf[BS_BootSig] = 0x29; /* Extended boot signature */
- mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
- }
- st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */
- if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the VBR sector */
-
- /* Create FSINFO record if needed */
- if (fmt == FS_FAT32) {
- disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */
- mem_set(buf, 0, ss);
- st_dword(buf + FSI_LeadSig, 0x41615252);
- st_dword(buf + FSI_StrucSig, 0x61417272);
- st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
- st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */
- st_word(buf + BS_55AA, 0xAA55);
- disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */
- disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */
- }
-
- /* Initialize FAT area */
- mem_set(buf, 0, (UINT)szb_buf);
- sect = b_fat; /* FAT start sector */
- for (i = 0; i < n_fats; i++) { /* Initialize FATs each */
- if (fmt == FS_FAT32) {
- st_dword(buf + 0, 0xFFFFFFF8); /* Entry 0 */
- st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */
- st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */
- } else {
- st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */
- }
- nsect = sz_fat; /* Number of FAT sectors */
- do { /* Fill FAT sectors */
- n = (nsect > sz_buf) ? sz_buf : nsect;
- if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
- mem_set(buf, 0, ss);
- sect += n; nsect -= n;
- } while (nsect);
- }
-
- /* Initialize root directory (fill with zero) */
- nsect = (fmt == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */
- do {
- n = (nsect > sz_buf) ? sz_buf : nsect;
- if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
- sect += n; nsect -= n;
- } while (nsect);
- }
-
- /* Determine system ID in the partition table */
- if (_FS_EXFAT && fmt == FS_EXFAT) {
- sys = 0x07; /* HPFS/NTFS/exFAT */
- } else {
- if (fmt == FS_FAT32) {
- sys = 0x0C; /* FAT32X */
- } else {
- if (sz_vol >= 0x10000) {
- sys = 0x06; /* FAT12/16 (>=64KS) */
- } else {
- sys = (fmt == FS_FAT16) ? 0x04 : 0x01; /* FAT16 (<64KS) : FAT12 (<64KS) */
- }
- }
- }
-
- if (_MULTI_PARTITION && part != 0) {
- /* Update system ID in the partition table */
- if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Read the MBR */
- buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys; /* Set system type */
- if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it back to the MBR */
- } else {
- if (!(opt & FM_SFD)) {
- /* Create partition table in FDISK format */
- mem_set(buf, 0, ss);
- st_word(buf + BS_55AA, 0xAA55); /* MBR signature */
- pte = buf + MBR_Table; /* Create partition table for single partition in the drive */
- pte[PTE_Boot] = 0; /* Boot indicator */
- pte[PTE_StHead] = 1; /* Start head */
- pte[PTE_StSec] = 1; /* Start sector */
- pte[PTE_StCyl] = 0; /* Start cylinder */
- pte[PTE_System] = sys; /* System type */
- n = (b_vol + sz_vol) / (63 * 255); /* (End CHS is incorrect) */
- pte[PTE_EdHead] = 254; /* End head */
- pte[PTE_EdSec] = (BYTE)(n >> 2 | 63); /* End sector */
- pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */
- st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */
- st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */
- if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */
- }
- }
-
- if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) return FR_DISK_ERR;
-
- return FR_OK;
-}
-
-
-
-#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 the CHS without any care 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 _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; /* Ptr to the writing file */
- int idx, nchr; /* Write index of buf[] (-1:error), number of chars written */
- BYTE buf[64]; /* Write buffer */
-} putbuff;
-
-
-static
-void putc_bfd ( /* Buffered write with code conversion */
- putbuff* pb,
- TCHAR c
-)
-{
- UINT bw;
- int i;
-
-
- if (_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */
- putc_bfd(pb, '\r');
- }
-
- i = pb->idx; /* Write index of pb->buf[] */
- if (i < 0) return;
-
-#if _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++;
-}
-
-
-static
-int putc_flush ( /* Flush left characters in the buffer */
- putbuff* pb
-)
-{
- UINT nw;
-
- 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;
-}
-
-
-static
-void putc_init ( /* Initialize write buffer */
- putbuff* pb,
- FIL* fp
-)
-{
- pb->fp = fp;
- pb->nchr = pb->idx = 0;
-}
-
-
-
-int f_putc (
- TCHAR c, /* A character to be output */
- FIL* fp /* Pointer to the file object */
-)
-{
- putbuff pb;
-
-
- putc_init(&pb, fp);
- putc_bfd(&pb, c); /* Put the character */
- return putc_flush(&pb);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* 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;
-
-
- putc_init(&pb, fp);
- while (*str) putc_bfd(&pb, *str++); /* Put the string */
- return putc_flush(&pb);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* 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;
- putbuff pb;
- BYTE f, r;
- UINT i, j, w;
- DWORD v;
- TCHAR c, d, str[32], *p;
-
-
- putc_init(&pb, fp);
-
- 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;
- str[i++] = d + '0';
- } while (v && i < sizeof str / sizeof str[0]);
- if (f & 8) str[i++] = '-';
- j = i; d = (f & 1) ? '0' : ' ';
- while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
- do putc_bfd(&pb, str[--i]); while (i);
- while (j++ < w) putc_bfd(&pb, d);
- }
-
- va_end(arp);
-
- return putc_flush(&pb);
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _USE_STRFUNC */
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