[101] | 1 | /*----------------------------------------------------------------------------/
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| 2 | / Petit FatFs - FAT file system module R0.03 (C)ChaN, 2014
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| 3 | /-----------------------------------------------------------------------------/
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| 4 | / Petit FatFs module is a generic FAT file system module for small embedded
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| 5 | / systems. This is a free software that opened for education, research and
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| 6 | / commercial developments under license policy of following trems.
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| 7 | /
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| 8 | / Copyright (C) 2014, ChaN, all right reserved.
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| 9 | /
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| 10 | / * The Petit FatFs module is a free software and there is NO WARRANTY.
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| 11 | / * No restriction on use. You can use, modify and redistribute it for
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| 12 | / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
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| 13 | / * Redistributions of source code must retain the above copyright notice.
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| 14 | /
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| 15 | /-----------------------------------------------------------------------------/
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| 16 | / Jun 15,'09 R0.01a First release.
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| 17 | /
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| 18 | / Dec 14,'09 R0.02 Added multiple code page support.
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| 19 | / Added write funciton.
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| 20 | / Changed stream read mode interface.
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| 21 | / Dec 07,'10 R0.02a Added some configuration options.
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| 22 | / Fixed fails to open objects with DBCS character.
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| 23 |
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| 24 | / Jun 10,'14 R0.03 Separated out configuration options to pffconf.h.
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| 25 | / Added _USE_LCC option.
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| 26 | / Added _FS_FAT16 option.
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| 27 | /----------------------------------------------------------------------------*/
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| 28 |
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| 29 | #include "pff.h" /* Petit FatFs configurations and declarations */
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| 30 | #include "diskio.h" /* Declarations of low level disk I/O functions */
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| 31 |
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| 32 |
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| 33 |
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| 34 | /*--------------------------------------------------------------------------
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| 35 |
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| 36 | Module Private Definitions
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| 37 |
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| 38 | ---------------------------------------------------------------------------*/
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| 39 |
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| 40 |
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| 41 | #if _PFATFS != 4004 /* Revision ID */
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| 42 | #error Wrong include file (pff.h).
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| 43 | #endif
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| 44 |
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| 45 | #if _FS_FAT32
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| 46 | #if !_FS_FAT16 && !_FS_FAT12
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| 47 | #define _FS_32ONLY 1
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| 48 | #else
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| 49 | #define _FS_32ONLY 0
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| 50 | #endif
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| 51 | #else
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| 52 | #if !_FS_FAT16 && !_FS_FAT12
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| 53 | #error Wrong _FS_FATxx setting.
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| 54 | #endif
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| 55 | #define _FS_32ONLY 0
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| 56 | #endif
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| 57 |
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| 58 | #define ABORT(err) {fs->flag = 0; return err;}
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| 59 |
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| 60 | #if _USE_LFN
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| 61 | static WCHAR LfnBuf[_MAX_LFN+1];
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| 62 | #endif
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| 63 |
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| 64 | /*--------------------------------------------------------*/
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| 65 | /* DBCS code ranges and SBCS extend char conversion table */
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| 66 | /*--------------------------------------------------------*/
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| 67 |
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| 68 | #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
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| 69 | #define _DF1S 0x81 /* DBC 1st byte range 1 start */
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| 70 | #define _DF1E 0x9F /* DBC 1st byte range 1 end */
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| 71 | #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
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| 72 | #define _DF2E 0xFC /* DBC 1st byte range 2 end */
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| 73 | #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
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| 74 | #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
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| 75 | #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
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| 76 | #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
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| 77 |
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| 78 | #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
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| 79 | #define _DF1S 0x81
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| 80 | #define _DF1E 0xFE
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| 81 | #define _DS1S 0x40
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| 82 | #define _DS1E 0x7E
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| 83 | #define _DS2S 0x80
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| 84 | #define _DS2E 0xFE
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| 85 |
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| 86 | #elif _CODE_PAGE == 949 /* Korean */
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| 87 | #define _DF1S 0x81
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| 88 | #define _DF1E 0xFE
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| 89 | #define _DS1S 0x41
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| 90 | #define _DS1E 0x5A
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| 91 | #define _DS2S 0x61
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| 92 | #define _DS2E 0x7A
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| 93 | #define _DS3S 0x81
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| 94 | #define _DS3E 0xFE
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| 95 |
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| 96 | #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
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| 97 | #define _DF1S 0x81
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| 98 | #define _DF1E 0xFE
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| 99 | #define _DS1S 0x40
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| 100 | #define _DS1E 0x7E
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| 101 | #define _DS2S 0xA1
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| 102 | #define _DS2E 0xFE
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| 103 |
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| 104 | #elif _CODE_PAGE == 437 /* U.S. (OEM) */
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| 105 | #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 106 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 107 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 108 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 109 |
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| 110 | #elif _CODE_PAGE == 720 /* Arabic (OEM) */
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| 111 | #define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 112 | 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 113 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 114 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 115 |
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| 116 | #elif _CODE_PAGE == 737 /* Greek (OEM) */
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| 117 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
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| 118 | 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 119 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 120 | 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 121 |
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| 122 | #elif _CODE_PAGE == 775 /* Baltic (OEM) */
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| 123 | #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, \
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| 124 | 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, \
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| 125 | 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, \
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| 126 | 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}
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| 127 |
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| 128 | #elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
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| 129 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
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| 130 | 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 131 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 132 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 133 |
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| 134 | #elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
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| 135 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
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| 136 | 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, \
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| 137 | 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, \
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| 138 | 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}
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| 139 |
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| 140 | #elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
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| 141 | #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, \
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| 142 | 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, \
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| 143 | 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, \
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| 144 | 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}
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| 145 |
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| 146 | #elif _CODE_PAGE == 857 /* Turkish (OEM) */
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| 147 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
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| 148 | 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 149 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 150 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 151 |
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| 152 | #elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
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| 153 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
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| 154 | 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 155 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 156 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 157 |
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| 158 | #elif _CODE_PAGE == 862 /* Hebrew (OEM) */
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| 159 | #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, \
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| 160 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 161 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 162 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 163 |
|
---|
| 164 | #elif _CODE_PAGE == 866 /* Russian (OEM) */
|
---|
| 165 | #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, \
|
---|
| 166 | 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, \
|
---|
| 167 | 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, \
|
---|
| 168 | 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 169 |
|
---|
| 170 | #elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
|
---|
| 171 | #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, \
|
---|
| 172 | 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, \
|
---|
| 173 | 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, \
|
---|
| 174 | 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}
|
---|
| 175 |
|
---|
| 176 | #elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
|
---|
| 177 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 178 | 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
|
---|
| 179 | 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, \
|
---|
| 180 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
|
---|
| 181 |
|
---|
| 182 | #elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
|
---|
| 183 | #define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 184 | 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
|
---|
| 185 | 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, \
|
---|
| 186 | 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}
|
---|
| 187 |
|
---|
| 188 | #elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
|
---|
| 189 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
|
---|
| 190 | 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 191 | 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, \
|
---|
| 192 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
|
---|
| 193 |
|
---|
| 194 | #elif _CODE_PAGE == 1253 /* Greek (Windows) */
|
---|
| 195 | #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, \
|
---|
| 196 | 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, \
|
---|
| 197 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
|
---|
| 198 | 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
|
---|
| 199 |
|
---|
| 200 | #elif _CODE_PAGE == 1254 /* Turkish (Windows) */
|
---|
| 201 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
|
---|
| 202 | 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 203 | 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, \
|
---|
| 204 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
|
---|
| 205 |
|
---|
| 206 | #elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
|
---|
| 207 | #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, \
|
---|
| 208 | 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 209 | 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, \
|
---|
| 210 | 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}
|
---|
| 211 |
|
---|
| 212 | #elif _CODE_PAGE == 1256 /* Arabic (Windows) */
|
---|
| 213 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
|
---|
| 214 | 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, \
|
---|
| 215 | 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, \
|
---|
| 216 | 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
|
---|
| 217 |
|
---|
| 218 | #elif _CODE_PAGE == 1257 /* Baltic (Windows) */
|
---|
| 219 | #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, \
|
---|
| 220 | 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
|
---|
| 221 | 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, \
|
---|
| 222 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
|
---|
| 223 |
|
---|
| 224 | #elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
|
---|
| 225 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
|
---|
| 226 | 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 227 | 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, \
|
---|
| 228 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
|
---|
| 229 |
|
---|
| 230 | #else
|
---|
| 231 | #error Unknown code page.
|
---|
| 232 |
|
---|
| 233 | #endif
|
---|
| 234 |
|
---|
| 235 |
|
---|
| 236 |
|
---|
| 237 | /* Character code support macros */
|
---|
| 238 |
|
---|
| 239 | #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
|
---|
| 240 | #define IsLower(c) (((c)>='a')&&((c)<='z'))
|
---|
| 241 |
|
---|
| 242 | #ifndef _EXCVT /* DBCS configuration */
|
---|
| 243 |
|
---|
| 244 | #ifdef _DF2S /* Two 1st byte areas */
|
---|
| 245 | #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
|
---|
| 246 | #else /* One 1st byte area */
|
---|
| 247 | #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
|
---|
| 248 | #endif
|
---|
| 249 |
|
---|
| 250 | #ifdef _DS3S /* Three 2nd byte areas */
|
---|
| 251 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
|
---|
| 252 | #else /* Two 2nd byte areas */
|
---|
| 253 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
|
---|
| 254 | #endif
|
---|
| 255 |
|
---|
| 256 | #else /* SBCS configuration */
|
---|
| 257 |
|
---|
| 258 | #define IsDBCS1(c) 0
|
---|
| 259 | #define IsDBCS2(c) 0
|
---|
| 260 |
|
---|
| 261 | #endif /* _EXCVT */
|
---|
| 262 |
|
---|
| 263 | /* Name status flags */
|
---|
| 264 | #define NSFLAG 11 /* Index of name status byte in fn[] */
|
---|
| 265 | #define NS_LOSS 0x01 /* Out of 8.3 format */
|
---|
| 266 | #define NS_LFN 0x02 /* Force to create LFN entry */
|
---|
| 267 | #define NS_LAST 0x04 /* Last segment */
|
---|
| 268 | #define NS_BODY 0x08 /* Lower case flag (body) */
|
---|
| 269 | #define NS_EXT 0x10 /* Lower case flag (ext) */
|
---|
| 270 | #define NS_DOT 0x20 /* Dot entry */
|
---|
| 271 |
|
---|
| 272 | /* FatFs refers the members in the FAT structures with byte offset instead
|
---|
| 273 | / of structure member because there are incompatibility of the packing option
|
---|
| 274 | / between various compilers. */
|
---|
| 275 |
|
---|
| 276 | #define BS_jmpBoot 0
|
---|
| 277 | #define BS_OEMName 3
|
---|
| 278 | #define BPB_BytsPerSec 11
|
---|
| 279 | #define BPB_SecPerClus 13
|
---|
| 280 | #define BPB_RsvdSecCnt 14
|
---|
| 281 | #define BPB_NumFATs 16
|
---|
| 282 | #define BPB_RootEntCnt 17
|
---|
| 283 | #define BPB_TotSec16 19
|
---|
| 284 | #define BPB_Media 21
|
---|
| 285 | #define BPB_FATSz16 22
|
---|
| 286 | #define BPB_SecPerTrk 24
|
---|
| 287 | #define BPB_NumHeads 26
|
---|
| 288 | #define BPB_HiddSec 28
|
---|
| 289 | #define BPB_TotSec32 32
|
---|
| 290 | #define BS_55AA 510
|
---|
| 291 |
|
---|
| 292 | #define BS_DrvNum 36
|
---|
| 293 | #define BS_BootSig 38
|
---|
| 294 | #define BS_VolID 39
|
---|
| 295 | #define BS_VolLab 43
|
---|
| 296 | #define BS_FilSysType 54
|
---|
| 297 |
|
---|
| 298 | #define BPB_FATSz32 36
|
---|
| 299 | #define BPB_ExtFlags 40
|
---|
| 300 | #define BPB_FSVer 42
|
---|
| 301 | #define BPB_RootClus 44
|
---|
| 302 | #define BPB_FSInfo 48
|
---|
| 303 | #define BPB_BkBootSec 50
|
---|
| 304 | #define BS_DrvNum32 64
|
---|
| 305 | #define BS_BootSig32 66
|
---|
| 306 | #define BS_VolID32 67
|
---|
| 307 | #define BS_VolLab32 71
|
---|
| 308 | #define BS_FilSysType32 82
|
---|
| 309 |
|
---|
| 310 | #define MBR_Table 446
|
---|
| 311 |
|
---|
| 312 | #define DIR_Name 0
|
---|
| 313 | #define DIR_Attr 11
|
---|
| 314 | #define DIR_NTres 12
|
---|
| 315 | #define DIR_CrtTime 14
|
---|
| 316 | #define DIR_CrtDate 16
|
---|
| 317 | #define DIR_FstClusHI 20
|
---|
| 318 | #define DIR_WrtTime 22
|
---|
| 319 | #define DIR_WrtDate 24
|
---|
| 320 | #define DIR_FstClusLO 26
|
---|
| 321 | #define DIR_FileSize 28
|
---|
| 322 | #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
|
---|
| 323 | #define LDIR_Attr 11 /* LFN attribute (1) */
|
---|
| 324 | #define LDIR_Type 12 /* LFN type (1) */
|
---|
| 325 | #define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
|
---|
| 326 | #define LDIR_FstClusLO 26 /* Filled by zero (0) */
|
---|
| 327 | #define SZ_DIR 32 /* Size of a directory entry */
|
---|
| 328 | #define LLE 0x40 /* Last long entry flag in LDIR_Ord */
|
---|
| 329 | #define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
|
---|
| 330 | #define NDDE 0x05 /* Replacement of the character collides with DDE */
|
---|
| 331 |
|
---|
| 332 | /*--------------------------------------------------------------------------
|
---|
| 333 |
|
---|
| 334 | Private Functions
|
---|
| 335 |
|
---|
| 336 | ---------------------------------------------------------------------------*/
|
---|
| 337 |
|
---|
| 338 |
|
---|
| 339 | /* Fill memory */
|
---|
| 340 | static
|
---|
| 341 | void mem_set (void* dst, int val, int cnt) {
|
---|
| 342 | char *d = (char*)dst;
|
---|
| 343 | while (cnt--) *d++ = (char)val;
|
---|
| 344 | }
|
---|
| 345 |
|
---|
| 346 | /* Compare memory to memory */
|
---|
| 347 | static
|
---|
| 348 | int mem_cmp (const void* dst, const void* src, int cnt) {
|
---|
| 349 | const char *d = (const char *)dst, *s = (const char *)src;
|
---|
| 350 | int r = 0;
|
---|
| 351 | while (cnt-- && (r = *d++ - *s++) == 0) ;
|
---|
| 352 | return r;
|
---|
| 353 | }
|
---|
| 354 |
|
---|
| 355 | /* Check if chr is contained in the string */
|
---|
| 356 | static
|
---|
| 357 | int chk_chr (const char* str, int chr) {
|
---|
| 358 | while (*str && *str != chr) str++;
|
---|
| 359 | return *str;
|
---|
| 360 | }
|
---|
| 361 |
|
---|
| 362 | static
|
---|
| 363 | const WCHAR uni2sjis[] = {
|
---|
| 364 | /* dummy... */
|
---|
| 365 | 0, 0
|
---|
| 366 | };
|
---|
| 367 |
|
---|
| 368 | WCHAR ff_convert ( /* Converted code, 0 means conversion error */
|
---|
| 369 | WCHAR chr, /* Character code to be converted */
|
---|
| 370 | UINT dir /* 0: Unicode to OEMCP, 1: OEMCP to Unicode */
|
---|
| 371 | )
|
---|
| 372 | {
|
---|
| 373 | const WCHAR *p;
|
---|
| 374 | WCHAR c;
|
---|
| 375 | int i, n, li, hi;
|
---|
| 376 |
|
---|
| 377 |
|
---|
| 378 | if (chr <= 0x80) { /* ASCII */
|
---|
| 379 | c = chr;
|
---|
| 380 | } else {
|
---|
| 381 | if (dir) { /* OEMCP to unicode (Incremental search)*/
|
---|
| 382 | p = &uni2sjis[1];
|
---|
| 383 | do {
|
---|
| 384 | c = *p;
|
---|
| 385 | p += 2;
|
---|
| 386 | } while (c && c != chr);
|
---|
| 387 | p -= 3;
|
---|
| 388 | c = *p;
|
---|
| 389 | } else { /* Unicode to OEMCP */
|
---|
| 390 | li = 0; hi = sizeof uni2sjis / 4 - 1;
|
---|
| 391 | for (n = 16; n; n--) {
|
---|
| 392 | i = li + (hi - li) / 2;
|
---|
| 393 | if (chr == uni2sjis[i * 2]) break;
|
---|
| 394 | if (chr > uni2sjis[i * 2])
|
---|
| 395 | li = i;
|
---|
| 396 | else
|
---|
| 397 | hi = i;
|
---|
| 398 | }
|
---|
| 399 | c = n ? uni2sjis[i * 2 + 1] : 0;
|
---|
| 400 | }
|
---|
| 401 | }
|
---|
| 402 |
|
---|
| 403 | return c;
|
---|
| 404 | }
|
---|
| 405 |
|
---|
| 406 | WCHAR ff_wtoupper ( /* Upper converted character */
|
---|
| 407 | WCHAR chr /* Input character */
|
---|
| 408 | )
|
---|
| 409 | {
|
---|
| 410 | static const WCHAR tbl_lower[] = { 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0xA1, 0x00A2, 0x00A3, 0x00A5, 0x00AC, 0x00AF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0x0FF, 0x101, 0x103, 0x105, 0x107, 0x109, 0x10B, 0x10D, 0x10F, 0x111, 0x113, 0x115, 0x117, 0x119, 0x11B, 0x11D, 0x11F, 0x121, 0x123, 0x125, 0x127, 0x129, 0x12B, 0x12D, 0x12F, 0x131, 0x133, 0x135, 0x137, 0x13A, 0x13C, 0x13E, 0x140, 0x142, 0x144, 0x146, 0x148, 0x14B, 0x14D, 0x14F, 0x151, 0x153, 0x155, 0x157, 0x159, 0x15B, 0x15D, 0x15F, 0x161, 0x163, 0x165, 0x167, 0x169, 0x16B, 0x16D, 0x16F, 0x171, 0x173, 0x175, 0x177, 0x17A, 0x17C, 0x17E, 0x192, 0x3B1, 0x3B2, 0x3B3, 0x3B4, 0x3B5, 0x3B6, 0x3B7, 0x3B8, 0x3B9, 0x3BA, 0x3BB, 0x3BC, 0x3BD, 0x3BE, 0x3BF, 0x3C0, 0x3C1, 0x3C3, 0x3C4, 0x3C5, 0x3C6, 0x3C7, 0x3C8, 0x3C9, 0x3CA, 0x430, 0x431, 0x432, 0x433, 0x434, 0x435, 0x436, 0x437, 0x438, 0x439, 0x43A, 0x43B, 0x43C, 0x43D, 0x43E, 0x43F, 0x440, 0x441, 0x442, 0x443, 0x444, 0x445, 0x446, 0x447, 0x448, 0x449, 0x44A, 0x44B, 0x44C, 0x44D, 0x44E, 0x44F, 0x451, 0x452, 0x453, 0x454, 0x455, 0x456, 0x457, 0x458, 0x459, 0x45A, 0x45B, 0x45C, 0x45E, 0x45F, 0x2170, 0x2171, 0x2172, 0x2173, 0x2174, 0x2175, 0x2176, 0x2177, 0x2178, 0x2179, 0x217A, 0x217B, 0x217C, 0x217D, 0x217E, 0x217F, 0xFF41, 0xFF42, 0xFF43, 0xFF44, 0xFF45, 0xFF46, 0xFF47, 0xFF48, 0xFF49, 0xFF4A, 0xFF4B, 0xFF4C, 0xFF4D, 0xFF4E, 0xFF4F, 0xFF50, 0xFF51, 0xFF52, 0xFF53, 0xFF54, 0xFF55, 0xFF56, 0xFF57, 0xFF58, 0xFF59, 0xFF5A, 0 };
|
---|
| 411 | static const WCHAR tbl_upper[] = { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x21, 0xFFE0, 0xFFE1, 0xFFE5, 0xFFE2, 0xFFE3, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0x178, 0x100, 0x102, 0x104, 0x106, 0x108, 0x10A, 0x10C, 0x10E, 0x110, 0x112, 0x114, 0x116, 0x118, 0x11A, 0x11C, 0x11E, 0x120, 0x122, 0x124, 0x126, 0x128, 0x12A, 0x12C, 0x12E, 0x130, 0x132, 0x134, 0x136, 0x139, 0x13B, 0x13D, 0x13F, 0x141, 0x143, 0x145, 0x147, 0x14A, 0x14C, 0x14E, 0x150, 0x152, 0x154, 0x156, 0x158, 0x15A, 0x15C, 0x15E, 0x160, 0x162, 0x164, 0x166, 0x168, 0x16A, 0x16C, 0x16E, 0x170, 0x172, 0x174, 0x176, 0x179, 0x17B, 0x17D, 0x191, 0x391, 0x392, 0x393, 0x394, 0x395, 0x396, 0x397, 0x398, 0x399, 0x39A, 0x39B, 0x39C, 0x39D, 0x39E, 0x39F, 0x3A0, 0x3A1, 0x3A3, 0x3A4, 0x3A5, 0x3A6, 0x3A7, 0x3A8, 0x3A9, 0x3AA, 0x410, 0x411, 0x412, 0x413, 0x414, 0x415, 0x416, 0x417, 0x418, 0x419, 0x41A, 0x41B, 0x41C, 0x41D, 0x41E, 0x41F, 0x420, 0x421, 0x422, 0x423, 0x424, 0x425, 0x426, 0x427, 0x428, 0x429, 0x42A, 0x42B, 0x42C, 0x42D, 0x42E, 0x42F, 0x401, 0x402, 0x403, 0x404, 0x405, 0x406, 0x407, 0x408, 0x409, 0x40A, 0x40B, 0x40C, 0x40E, 0x40F, 0x2160, 0x2161, 0x2162, 0x2163, 0x2164, 0x2165, 0x2166, 0x2167, 0x2168, 0x2169, 0x216A, 0x216B, 0x216C, 0x216D, 0x216E, 0x216F, 0xFF21, 0xFF22, 0xFF23, 0xFF24, 0xFF25, 0xFF26, 0xFF27, 0xFF28, 0xFF29, 0xFF2A, 0xFF2B, 0xFF2C, 0xFF2D, 0xFF2E, 0xFF2F, 0xFF30, 0xFF31, 0xFF32, 0xFF33, 0xFF34, 0xFF35, 0xFF36, 0xFF37, 0xFF38, 0xFF39, 0xFF3A, 0 };
|
---|
| 412 | int i;
|
---|
| 413 |
|
---|
| 414 |
|
---|
| 415 | for (i = 0; tbl_lower[i] && chr != tbl_lower[i]; i++) ;
|
---|
| 416 |
|
---|
| 417 | return tbl_lower[i] ? tbl_upper[i] : chr;
|
---|
| 418 | }
|
---|
| 419 |
|
---|
| 420 | /*-----------------------------------------------------------------------*/
|
---|
| 421 | /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
|
---|
| 422 | /*-----------------------------------------------------------------------*/
|
---|
| 423 | #if _USE_LFN
|
---|
| 424 | static
|
---|
| 425 | const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
|
---|
| 426 |
|
---|
| 427 |
|
---|
| 428 | static
|
---|
| 429 | int cmp_lfn ( /* 1:Matched, 0:Not matched */
|
---|
| 430 | WCHAR* lfnbuf, /* Pointer to the LFN to be compared */
|
---|
| 431 | BYTE* dir /* Pointer to the directory entry containing a part of LFN */
|
---|
| 432 | )
|
---|
| 433 | {
|
---|
| 434 | UINT i, s;
|
---|
| 435 | WCHAR wc, uc;
|
---|
| 436 |
|
---|
| 437 | i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
|
---|
| 438 | s = 0; wc = 1;
|
---|
| 439 | do {
|
---|
| 440 | uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
|
---|
| 441 | if (wc) { /* Last character has not been processed */
|
---|
| 442 | wc = ff_wtoupper(uc); /* Convert it to upper case */
|
---|
| 443 | if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
|
---|
| 444 | return 0; /* Not matched */
|
---|
| 445 | } else {
|
---|
| 446 | if (uc != 0xFFFF) return 0; /* Check filler */
|
---|
| 447 | }
|
---|
| 448 | } while (++s < 13); /* Repeat until all characters in the entry are checked */
|
---|
| 449 |
|
---|
| 450 | if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
|
---|
| 451 | return 0;
|
---|
| 452 |
|
---|
| 453 | return 1; /* The part of LFN matched */
|
---|
| 454 | }
|
---|
| 455 |
|
---|
| 456 | static
|
---|
| 457 | int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
|
---|
| 458 | WCHAR* lfnbuf, /* Pointer to the Unicode-LFN buffer */
|
---|
| 459 | BYTE* dir /* Pointer to the directory entry */
|
---|
| 460 | )
|
---|
| 461 | {
|
---|
| 462 | UINT i, s;
|
---|
| 463 | WCHAR wc, uc;
|
---|
| 464 |
|
---|
| 465 |
|
---|
| 466 | i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
|
---|
| 467 |
|
---|
| 468 | s = 0; wc = 1;
|
---|
| 469 | do {
|
---|
| 470 | uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
|
---|
| 471 | if (wc) { /* Last character has not been processed */
|
---|
| 472 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
|
---|
| 473 | lfnbuf[i++] = wc = uc; /* Store it */
|
---|
| 474 | } else {
|
---|
| 475 | if (uc != 0xFFFF) return 0; /* Check filler */
|
---|
| 476 | }
|
---|
| 477 | } while (++s < 13); /* Read all character in the entry */
|
---|
| 478 |
|
---|
| 479 | if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
|
---|
| 480 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
|
---|
| 481 | lfnbuf[i] = 0;
|
---|
| 482 | }
|
---|
| 483 |
|
---|
| 484 | return 1;
|
---|
| 485 | }
|
---|
| 486 | #endif
|
---|
| 487 |
|
---|
| 488 | /*-----------------------------------------------------------------------*/
|
---|
| 489 | /* FAT access - Read value of a FAT entry */
|
---|
| 490 | /*-----------------------------------------------------------------------*/
|
---|
| 491 |
|
---|
| 492 | static
|
---|
| 493 | CLUST get_fat ( /* 1:IO error, Else:Cluster status */
|
---|
| 494 | FATFS *fs,
|
---|
| 495 | CLUST clst /* Cluster# to get the link information */
|
---|
| 496 | )
|
---|
| 497 | {
|
---|
| 498 | BYTE buf[4];
|
---|
| 499 |
|
---|
| 500 | if (clst < 2 || clst >= fs->n_fatent) /* Range check */
|
---|
| 501 | return 1;
|
---|
| 502 |
|
---|
| 503 | switch (fs->fs_type) {
|
---|
| 504 | #if _FS_FAT12
|
---|
| 505 | case FS_FAT12 : {
|
---|
| 506 | UINT wc, bc, ofs;
|
---|
| 507 |
|
---|
| 508 | bc = (UINT)clst; bc += bc / 2;
|
---|
| 509 | ofs = bc % 512; bc /= 512;
|
---|
| 510 | if (ofs != 511) {
|
---|
| 511 | if (disk_readp(buf, fs->fatbase + bc, ofs, 2)) break;
|
---|
| 512 | } else {
|
---|
| 513 | if (disk_readp(buf, fs->fatbase + bc, 511, 1)) break;
|
---|
| 514 | if (disk_readp(buf+1, fs->fatbase + bc + 1, 0, 1)) break;
|
---|
| 515 | }
|
---|
| 516 | wc = LD_WORD(buf);
|
---|
| 517 | return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
|
---|
| 518 | }
|
---|
| 519 | #endif
|
---|
| 520 | #if _FS_FAT16
|
---|
| 521 | case FS_FAT16 :
|
---|
| 522 | if (disk_readp(buf, fs->fatbase + clst / 256, ((UINT)clst % 256) * 2, 2)) break;
|
---|
| 523 | return LD_WORD(buf);
|
---|
| 524 | #endif
|
---|
| 525 | #if _FS_FAT32
|
---|
| 526 | case FS_FAT32 :
|
---|
| 527 | if (disk_readp(buf, fs->fatbase + clst / 128, ((UINT)clst % 128) * 4, 4)) break;
|
---|
| 528 | return LD_DWORD(buf) & 0x0FFFFFFF;
|
---|
| 529 | #endif
|
---|
| 530 | }
|
---|
| 531 |
|
---|
| 532 | return 1; /* An error occured at the disk I/O layer */
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 |
|
---|
| 536 |
|
---|
| 537 |
|
---|
| 538 | /*-----------------------------------------------------------------------*/
|
---|
| 539 | /* Get sector# from cluster# / Get cluster field from directory entry */
|
---|
| 540 | /*-----------------------------------------------------------------------*/
|
---|
| 541 |
|
---|
| 542 | static
|
---|
| 543 | DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
|
---|
| 544 | FATFS *fs,
|
---|
| 545 | CLUST clst /* Cluster# to be converted */
|
---|
| 546 | )
|
---|
| 547 | {
|
---|
| 548 | clst -= 2;
|
---|
| 549 | if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
|
---|
| 550 | return (DWORD)clst * fs->csize + fs->database;
|
---|
| 551 | }
|
---|
| 552 |
|
---|
| 553 |
|
---|
| 554 | static
|
---|
| 555 | CLUST get_clust (
|
---|
| 556 | FATFS *fs,
|
---|
| 557 | BYTE* dir /* Pointer to directory entry */
|
---|
| 558 | )
|
---|
| 559 | {
|
---|
| 560 | CLUST clst = 0;
|
---|
| 561 |
|
---|
| 562 |
|
---|
| 563 | if (_FS_32ONLY || (_FS_FAT32 && fs->fs_type == FS_FAT32)) {
|
---|
| 564 | clst = LD_WORD(dir+DIR_FstClusHI);
|
---|
| 565 | clst <<= 16;
|
---|
| 566 | }
|
---|
| 567 | clst |= LD_WORD(dir+DIR_FstClusLO);
|
---|
| 568 |
|
---|
| 569 | return clst;
|
---|
| 570 | }
|
---|
| 571 |
|
---|
| 572 |
|
---|
| 573 | /*-----------------------------------------------------------------------*/
|
---|
| 574 | /* Directory handling - Rewind directory index */
|
---|
| 575 | /*-----------------------------------------------------------------------*/
|
---|
| 576 |
|
---|
| 577 | static
|
---|
| 578 | FRESULT dir_rewind (
|
---|
| 579 | DIR *dj /* Pointer to directory object */
|
---|
| 580 | )
|
---|
| 581 | {
|
---|
| 582 | CLUST clst;
|
---|
| 583 | FATFS *fs = dj->fs;
|
---|
| 584 |
|
---|
| 585 |
|
---|
| 586 | dj->index = 0;
|
---|
| 587 | clst = dj->sclust;
|
---|
| 588 | if (clst == 1 || clst >= fs->n_fatent) /* Check start cluster range */
|
---|
| 589 | return FR_DISK_ERR;
|
---|
| 590 | if (_FS_FAT32 && !clst && (_FS_32ONLY || fs->fs_type == FS_FAT32)) /* Replace cluster# 0 with root cluster# if in FAT32 */
|
---|
| 591 | clst = (CLUST)fs->dirbase;
|
---|
| 592 | dj->clust = clst; /* Current cluster */
|
---|
| 593 | dj->sect = (_FS_32ONLY || clst) ? clust2sect(fs, clst) : fs->dirbase; /* Current sector */
|
---|
| 594 |
|
---|
| 595 | return FR_OK; /* Seek succeeded */
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 |
|
---|
| 599 |
|
---|
| 600 |
|
---|
| 601 | /*-----------------------------------------------------------------------*/
|
---|
| 602 | /* Directory handling - Move directory index next */
|
---|
| 603 | /*-----------------------------------------------------------------------*/
|
---|
| 604 |
|
---|
| 605 | static
|
---|
| 606 | FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table */
|
---|
| 607 | DIR *dj /* Pointer to directory object */
|
---|
| 608 | )
|
---|
| 609 | {
|
---|
| 610 | CLUST clst;
|
---|
| 611 | WORD i;
|
---|
| 612 | FATFS *fs = dj->fs;
|
---|
| 613 |
|
---|
| 614 |
|
---|
| 615 | i = dj->index + 1;
|
---|
| 616 | if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
|
---|
| 617 | return FR_NO_FILE;
|
---|
| 618 |
|
---|
| 619 | if (!(i % 16)) { /* Sector changed? */
|
---|
| 620 | dj->sect++; /* Next sector */
|
---|
| 621 |
|
---|
| 622 | if (dj->clust == 0) { /* Static table */
|
---|
| 623 | if (i >= fs->n_rootdir) /* Report EOT when end of table */
|
---|
| 624 | return FR_NO_FILE;
|
---|
| 625 | }
|
---|
| 626 | else { /* Dynamic table */
|
---|
| 627 | if (((i / 16) & (fs->csize - 1)) == 0) { /* Cluster changed? */
|
---|
| 628 | clst = get_fat(fs, dj->clust); /* Get next cluster */
|
---|
| 629 | if (clst <= 1) return FR_DISK_ERR;
|
---|
| 630 | if (clst >= fs->n_fatent) /* When it reached end of dynamic table */
|
---|
| 631 | return FR_NO_FILE; /* Report EOT */
|
---|
| 632 | dj->clust = clst; /* Initialize data for new cluster */
|
---|
| 633 | dj->sect = clust2sect(fs, clst);
|
---|
| 634 | }
|
---|
| 635 | }
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 | dj->index = i;
|
---|
| 639 |
|
---|
| 640 | return FR_OK;
|
---|
| 641 | }
|
---|
| 642 |
|
---|
| 643 | /*-----------------------------------------------------------------------*/
|
---|
| 644 | /* Calculate sum of an SFN */
|
---|
| 645 | /*-----------------------------------------------------------------------*/
|
---|
| 646 | #if _USE_LFN
|
---|
| 647 | static
|
---|
| 648 | BYTE sum_sfn (
|
---|
| 649 | const BYTE* dir /* Pointer to the SFN entry */
|
---|
| 650 | )
|
---|
| 651 | {
|
---|
| 652 | BYTE sum = 0;
|
---|
| 653 | UINT n = 11;
|
---|
| 654 |
|
---|
| 655 | do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
|
---|
| 656 | return sum;
|
---|
| 657 | }
|
---|
| 658 | #endif
|
---|
| 659 |
|
---|
| 660 | /*-----------------------------------------------------------------------*/
|
---|
| 661 | /* Directory handling - Find an object in the directory */
|
---|
| 662 | /*-----------------------------------------------------------------------*/
|
---|
| 663 |
|
---|
| 664 | static
|
---|
| 665 | FRESULT dir_find (
|
---|
| 666 | DIR *dj, /* Pointer to the directory object linked to the file name */
|
---|
| 667 | BYTE *dir /* 32-byte working buffer */
|
---|
| 668 | )
|
---|
| 669 | {
|
---|
| 670 | FRESULT res;
|
---|
| 671 | BYTE c;
|
---|
| 672 | #if _USE_LFN
|
---|
| 673 | BYTE a, ord, sum;
|
---|
| 674 | #endif
|
---|
| 675 |
|
---|
| 676 | res = dir_rewind(dj); /* Rewind directory object */
|
---|
| 677 | if (res != FR_OK) return res;
|
---|
| 678 |
|
---|
| 679 | #if _USE_LFN
|
---|
| 680 | ord = sum = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
|
---|
| 681 | #endif
|
---|
| 682 | do {
|
---|
| 683 | res = disk_readp(dir, dj->sect, (dj->index % 16) * 32, 32) /* Read an entry */
|
---|
| 684 | ? FR_DISK_ERR : FR_OK;
|
---|
| 685 | if (res != FR_OK) break;
|
---|
| 686 | c = dir[DIR_Name]; /* First character */
|
---|
| 687 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
---|
| 688 | #if _USE_LFN /* LFN configuration */
|
---|
| 689 | a = dir[DIR_Attr] & AM_MASK;
|
---|
| 690 | if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
|
---|
| 691 | ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
|
---|
| 692 | } else {
|
---|
| 693 | if (a == AM_LFN) { /* An LFN entry is found */
|
---|
| 694 | if (dj->lfn) {
|
---|
| 695 | if (c & LLE) { /* Is it start of LFN sequence? */
|
---|
| 696 | sum = dir[LDIR_Chksum];
|
---|
| 697 | c &= ~LLE; ord = c; /* LFN start order */
|
---|
| 698 | dj->lfn_idx = dj->index; /* Start index of LFN */
|
---|
| 699 | }
|
---|
| 700 | /* Check validity of the LFN entry and compare it with given name */
|
---|
| 701 | ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
|
---|
| 702 | }
|
---|
| 703 | } else { /* An SFN entry is found */
|
---|
| 704 | if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
|
---|
| 705 | if (!(dj->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
|
---|
| 706 | ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
|
---|
| 707 | }
|
---|
| 708 | }
|
---|
| 709 | #else /* Non LFN configuration */
|
---|
| 710 | if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
|
---|
| 711 | break;
|
---|
| 712 | #endif
|
---|
| 713 | res = dir_next(dj); /* Next entry */
|
---|
| 714 | } while (res == FR_OK);
|
---|
| 715 |
|
---|
| 716 | return res;
|
---|
| 717 | }
|
---|
| 718 |
|
---|
| 719 |
|
---|
| 720 |
|
---|
| 721 |
|
---|
| 722 | /*-----------------------------------------------------------------------*/
|
---|
| 723 | /* Read an object from the directory */
|
---|
| 724 | /*-----------------------------------------------------------------------*/
|
---|
| 725 | #if _USE_DIR
|
---|
| 726 | static
|
---|
| 727 | FRESULT dir_read (
|
---|
| 728 | DIR *dj, /* Pointer to the directory object to store read object name */
|
---|
| 729 | BYTE *dir /* 32-byte working buffer */
|
---|
| 730 | )
|
---|
| 731 | {
|
---|
| 732 | FRESULT res;
|
---|
| 733 | BYTE a, c;
|
---|
| 734 | #if _USE_LFN
|
---|
| 735 | BYTE ord = 0xFF, sum = 0xFF;
|
---|
| 736 | #endif
|
---|
| 737 |
|
---|
| 738 | res = FR_NO_FILE;
|
---|
| 739 | while (dj->sect) {
|
---|
| 740 | res = disk_readp(dir, dj->sect, (dj->index % 16) * 32, 32) /* Read an entry */
|
---|
| 741 | ? FR_DISK_ERR : FR_OK;
|
---|
| 742 | if (res != FR_OK) break;
|
---|
| 743 | c = dir[DIR_Name];
|
---|
| 744 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
---|
| 745 | a = dir[DIR_Attr] & AM_MASK;
|
---|
| 746 | #if _USE_LFN /* LFN configuration */
|
---|
| 747 | if (c == DDE || c == '.' || ((a & ~AM_ARC) == AM_VOL)) { /* An entry without valid data */
|
---|
| 748 | ord = 0xFF;
|
---|
| 749 | } else {
|
---|
| 750 | if (a == AM_LFN) { /* An LFN entry is found */
|
---|
| 751 | if (c & LLE) { /* Is it start of LFN sequence? */
|
---|
| 752 | sum = dir[LDIR_Chksum];
|
---|
| 753 | c &= ~LLE; ord = c;
|
---|
| 754 | dj->lfn_idx = dj->index;
|
---|
| 755 | }
|
---|
| 756 | /* Check LFN validity and capture it */
|
---|
| 757 | ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
|
---|
| 758 | } else { /* An SFN entry is found */
|
---|
| 759 | if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
|
---|
| 760 | dj->lfn_idx = 0xFFFF; /* It has no LFN. */
|
---|
| 761 | break;
|
---|
| 762 | }
|
---|
| 763 | }
|
---|
| 764 | #else /* Non LFN configuration */
|
---|
| 765 | if (c != DDE && c != '.' && !((a & ~AM_ARC) == AM_VOL)) /* Is it a valid entry? */
|
---|
| 766 | break;
|
---|
| 767 | #endif
|
---|
| 768 | res = dir_next(dj); /* Next entry */
|
---|
| 769 | if (res != FR_OK) break;
|
---|
| 770 | }
|
---|
| 771 |
|
---|
| 772 | if (res != FR_OK) dj->sect = 0;
|
---|
| 773 |
|
---|
| 774 | return res;
|
---|
| 775 | }
|
---|
| 776 | #endif
|
---|
| 777 |
|
---|
| 778 |
|
---|
| 779 |
|
---|
| 780 | /*-----------------------------------------------------------------------*/
|
---|
| 781 | /* Pick a segment and create the object name in directory form */
|
---|
| 782 | /*-----------------------------------------------------------------------*/
|
---|
| 783 |
|
---|
| 784 |
|
---|
| 785 | static
|
---|
| 786 | FRESULT create_name (
|
---|
| 787 | DIR* dj, /* Pointer to the directory object */
|
---|
| 788 | const char** path /* Pointer to pointer to the segment in the path string */
|
---|
| 789 | )
|
---|
| 790 | {
|
---|
| 791 | #if _USE_LFN /* LFN configuration */
|
---|
| 792 | BYTE b, cf;
|
---|
| 793 | WCHAR w, *lfn;
|
---|
| 794 | UINT i, ni, si, di;
|
---|
| 795 | const char *p;
|
---|
| 796 |
|
---|
| 797 | /* Create LFN in Unicode */
|
---|
| 798 | for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
|
---|
| 799 | lfn = dj->lfn;
|
---|
| 800 | si = di = 0;
|
---|
| 801 | for (;;) {
|
---|
| 802 | w = p[si++]; /* Get a character */
|
---|
| 803 | if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
|
---|
| 804 | if (di >= _MAX_LFN) /* Reject too long name */
|
---|
| 805 | return FR_INVALID_NAME;
|
---|
| 806 | #if !_LFN_UNICODE
|
---|
| 807 | w &= 0xFF;
|
---|
| 808 | if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
|
---|
| 809 | b = (BYTE)p[si++]; /* Get 2nd byte */
|
---|
| 810 | if (!IsDBCS2(b))
|
---|
| 811 | return FR_INVALID_NAME; /* Reject invalid sequence */
|
---|
| 812 | w = (w << 8) + b; /* Create a DBC */
|
---|
| 813 | }
|
---|
| 814 | w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
|
---|
| 815 | if (!w) return FR_INVALID_NAME; /* Reject invalid code */
|
---|
| 816 | #endif
|
---|
| 817 | if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */
|
---|
| 818 | return FR_INVALID_NAME;
|
---|
| 819 | lfn[di++] = w; /* Store the Unicode character */
|
---|
| 820 | }
|
---|
| 821 | *path = &p[si]; /* Return pointer to the next segment */
|
---|
| 822 | cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
|
---|
| 823 | while (di) { /* Strip trailing spaces and dots */
|
---|
| 824 | w = lfn[di-1];
|
---|
| 825 | if (w != ' ' && w != '.') break;
|
---|
| 826 | di--;
|
---|
| 827 | }
|
---|
| 828 | if (!di) return FR_INVALID_NAME; /* Reject nul string */
|
---|
| 829 |
|
---|
| 830 | lfn[di] = 0; /* LFN is created */
|
---|
| 831 |
|
---|
| 832 | /* Create SFN in directory form */
|
---|
| 833 | mem_set(dj->fn, ' ', 11);
|
---|
| 834 | for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
|
---|
| 835 | if (si) cf |= NS_LOSS | NS_LFN;
|
---|
| 836 | while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
|
---|
| 837 |
|
---|
| 838 | b = i = 0; ni = 8;
|
---|
| 839 | for (;;) {
|
---|
| 840 | w = lfn[si++]; /* Get an LFN character */
|
---|
| 841 | if (!w) break; /* Break on end of the LFN */
|
---|
| 842 | if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
|
---|
| 843 | cf |= NS_LOSS | NS_LFN; continue;
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | if (i >= ni || si == di) { /* Extension or end of SFN */
|
---|
| 847 | if (ni == 11) { /* Long extension */
|
---|
| 848 | cf |= NS_LOSS | NS_LFN; break;
|
---|
| 849 | }
|
---|
| 850 | if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
|
---|
| 851 | if (si > di) break; /* No extension */
|
---|
| 852 | si = di; i = 8; ni = 11; /* Enter extension section */
|
---|
| 853 | b <<= 2; continue;
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | if (w >= 0x80) { /* Non ASCII character */
|
---|
| 857 | #ifdef _EXCVT
|
---|
| 858 | w = ff_convert(w, 0); /* Unicode -> OEM code */
|
---|
| 859 | if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
|
---|
| 860 | #else
|
---|
| 861 | w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
|
---|
| 862 | #endif
|
---|
| 863 | cf |= NS_LFN; /* Force create LFN entry */
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | if (_DF1S && w >= 0x100) { /* Double byte character (always false on SBCS cfg) */
|
---|
| 867 | if (i >= ni - 1) {
|
---|
| 868 | cf |= NS_LOSS | NS_LFN; i = ni; continue;
|
---|
| 869 | }
|
---|
| 870 | dj->fn[i++] = (BYTE)(w >> 8);
|
---|
| 871 | } else { /* Single byte character */
|
---|
| 872 | if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
|
---|
| 873 | w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
|
---|
| 874 | } else {
|
---|
| 875 | if (IsUpper(w)) { /* ASCII large capital */
|
---|
| 876 | b |= 2;
|
---|
| 877 | } else {
|
---|
| 878 | if (IsLower(w)) { /* ASCII small capital */
|
---|
| 879 | b |= 1; w -= 0x20;
|
---|
| 880 | }
|
---|
| 881 | }
|
---|
| 882 | }
|
---|
| 883 | }
|
---|
| 884 | dj->fn[i++] = (BYTE)w;
|
---|
| 885 | }
|
---|
| 886 |
|
---|
| 887 | if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first character collides with deleted mark, replace it with 0x05 */
|
---|
| 888 |
|
---|
| 889 | if (ni == 8) b <<= 2;
|
---|
| 890 | if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
|
---|
| 891 | cf |= NS_LFN;
|
---|
| 892 | if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
|
---|
| 893 | if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
|
---|
| 894 | if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
|
---|
| 895 | }
|
---|
| 896 |
|
---|
| 897 | dj->fn[NSFLAG] = cf; /* SFN is created */
|
---|
| 898 |
|
---|
| 899 | return FR_OK;
|
---|
| 900 |
|
---|
| 901 |
|
---|
| 902 | #else /* Non-LFN configuration */
|
---|
| 903 | BYTE c, ni, si, i, *sfn;
|
---|
| 904 | const char *p;
|
---|
| 905 | #if _USE_LCC
|
---|
| 906 | #ifdef _EXCVT
|
---|
| 907 | static const BYTE cvt[] = _EXCVT;
|
---|
| 908 | #endif
|
---|
| 909 | #endif
|
---|
| 910 |
|
---|
| 911 | /* Create file name in directory form */
|
---|
| 912 | sfn = dj->fn;
|
---|
| 913 | mem_set(sfn, ' ', 11);
|
---|
| 914 | si = i = 0; ni = 8;
|
---|
| 915 | p = *path;
|
---|
| 916 | for (;;) {
|
---|
| 917 | c = p[si++];
|
---|
| 918 | if (c <= ' ' || c == '/') break; /* Break on end of segment */
|
---|
| 919 | if (c == '.' || i >= ni) {
|
---|
| 920 | if (ni != 8 || c != '.') break;
|
---|
| 921 | i = 8; ni = 11;
|
---|
| 922 | continue;
|
---|
| 923 | }
|
---|
| 924 | #if _USE_LCC
|
---|
| 925 | #ifdef _EXCVT
|
---|
| 926 | if (c >= 0x80) /* To upper extended char (SBCS) */
|
---|
| 927 | c = cvt[c - 0x80];
|
---|
| 928 | #endif
|
---|
| 929 | if (IsDBCS1(c) && i < ni - 1) { /* DBC 1st byte? */
|
---|
| 930 | BYTE d = p[si++]; /* Get 2nd byte */
|
---|
| 931 | sfn[i++] = c;
|
---|
| 932 | sfn[i++] = d;
|
---|
| 933 | } else
|
---|
| 934 | #endif
|
---|
| 935 | { /* Single byte code */
|
---|
| 936 | if (_USE_LCC && IsLower(c)) c -= 0x20; /* toupper */
|
---|
| 937 | sfn[i++] = c;
|
---|
| 938 | }
|
---|
| 939 | }
|
---|
| 940 | *path = &p[si]; /* Rerurn pointer to the next segment */
|
---|
| 941 |
|
---|
| 942 | sfn[11] = (c <= ' ') ? 1 : 0; /* Set last segment flag if end of path */
|
---|
| 943 |
|
---|
| 944 | return FR_OK;
|
---|
| 945 | #endif
|
---|
| 946 | }
|
---|
| 947 |
|
---|
| 948 |
|
---|
| 949 |
|
---|
| 950 |
|
---|
| 951 | /*-----------------------------------------------------------------------*/
|
---|
| 952 | /* Get file information from directory entry */
|
---|
| 953 | /*-----------------------------------------------------------------------*/
|
---|
| 954 | #if _USE_DIR
|
---|
| 955 | static
|
---|
| 956 | void get_fileinfo ( /* No return code */
|
---|
| 957 | DIR *dj, /* Pointer to the directory object */
|
---|
| 958 | BYTE *dir, /* 32-byte working buffer */
|
---|
| 959 | FILINFO *fno /* Pointer to store the file information */
|
---|
| 960 | )
|
---|
| 961 | {
|
---|
| 962 | BYTE i, c;
|
---|
| 963 | char *p;
|
---|
| 964 |
|
---|
| 965 |
|
---|
| 966 | p = fno->fname;
|
---|
| 967 | if (dj->sect) {
|
---|
| 968 | i = 0;
|
---|
| 969 | while (i < 11) { /* Copy name body and extension */
|
---|
| 970 | c = dir[i++];
|
---|
| 971 | if (c == ' ') continue; /* Skip padding spaces */
|
---|
| 972 | if (c == NDDE) c = DDE; /* Restore replaced DDE character */
|
---|
| 973 | if (i == 9) *p++ = '.'; /* Insert a . if extension is exist */
|
---|
| 974 | #if _USE_LFN
|
---|
| 975 | if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
|
---|
| 976 | c += 0x20; /* To lower */
|
---|
| 977 | #endif
|
---|
| 978 | *p++ = c;
|
---|
| 979 | }
|
---|
| 980 | fno->fattrib = dir[DIR_Attr]; /* Attribute */
|
---|
| 981 | fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
|
---|
| 982 | fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
|
---|
| 983 | fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
|
---|
| 984 | }
|
---|
| 985 | *p = 0;
|
---|
| 986 |
|
---|
| 987 | #if _USE_LFN
|
---|
| 988 | if (fno->lfname) {
|
---|
| 989 | WCHAR w, *lfn;
|
---|
| 990 |
|
---|
| 991 | i = 0; p = fno->lfname;
|
---|
| 992 | if (dj->sect && fno->lfsize && dj->lfn_idx != 0xFFFF) { /* Get LFN if available */
|
---|
| 993 | lfn = dj->lfn;
|
---|
| 994 | while ((w = *lfn++) != 0) { /* Get an LFN character */
|
---|
| 995 | #if !_LFN_UNICODE
|
---|
| 996 | w = ff_convert(w, 0); /* Unicode -> OEM */
|
---|
| 997 | if (!w) { i = 0; break; } /* No LFN if it could not be converted */
|
---|
| 998 | if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
|
---|
| 999 | p[i++] = (w >> 8);
|
---|
| 1000 | #endif
|
---|
| 1001 | if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */
|
---|
| 1002 | p[i++] = w;
|
---|
| 1003 | }
|
---|
| 1004 | }
|
---|
| 1005 | p[i] = 0; /* Terminate LFN string by a \0 */
|
---|
| 1006 | }
|
---|
| 1007 | #endif
|
---|
| 1008 | }
|
---|
| 1009 | #endif /* _USE_DIR */
|
---|
| 1010 |
|
---|
| 1011 |
|
---|
| 1012 |
|
---|
| 1013 | /*-----------------------------------------------------------------------*/
|
---|
| 1014 | /* Follow a file path */
|
---|
| 1015 | /*-----------------------------------------------------------------------*/
|
---|
| 1016 |
|
---|
| 1017 | static
|
---|
| 1018 | FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
|
---|
| 1019 | DIR* dj, /* Directory object to return last directory and found object */
|
---|
| 1020 | BYTE *dir, /* 32-byte working buffer */
|
---|
| 1021 | const char* path /* Full-path string to find a file or directory */
|
---|
| 1022 | )
|
---|
| 1023 | {
|
---|
| 1024 | FRESULT res;
|
---|
| 1025 | BYTE ns;
|
---|
| 1026 | FATFS *fs = dj->fs;
|
---|
| 1027 |
|
---|
| 1028 |
|
---|
| 1029 | while (*path == ' ') path++; /* Strip leading spaces */
|
---|
| 1030 | if (*path == '/') path++; /* Strip heading separator if exist */
|
---|
| 1031 | dj->sclust = 0; /* Set start directory (always root dir) */
|
---|
| 1032 |
|
---|
| 1033 | if ((BYTE)*path < ' ') { /* Null path means the root directory */
|
---|
| 1034 | res = dir_rewind(dj);
|
---|
| 1035 | dir[0] = 0;
|
---|
| 1036 |
|
---|
| 1037 | } else { /* Follow path */
|
---|
| 1038 | for (;;) {
|
---|
| 1039 | res = create_name(dj, &path); /* Get a segment */
|
---|
| 1040 | if (res != FR_OK) break;
|
---|
| 1041 | res = dir_find(dj, dir); /* Find it */
|
---|
| 1042 | ns = dj->fn[NSFLAG];
|
---|
| 1043 | if (res != FR_OK) { /* Failed to find the object */
|
---|
| 1044 | if (res == FR_NO_FILE) { /* Object is not found */
|
---|
| 1045 | if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
|
---|
| 1046 | }
|
---|
| 1047 | break;
|
---|
| 1048 | }
|
---|
| 1049 | if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
|
---|
| 1050 | if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow path because it is a file */
|
---|
| 1051 | res = FR_NO_PATH; break;
|
---|
| 1052 | }
|
---|
| 1053 | dj->sclust = get_clust(fs, dir); /* Follow next */
|
---|
| 1054 | }
|
---|
| 1055 | }
|
---|
| 1056 |
|
---|
| 1057 | return res;
|
---|
| 1058 | }
|
---|
| 1059 |
|
---|
| 1060 |
|
---|
| 1061 |
|
---|
| 1062 |
|
---|
| 1063 | /*-----------------------------------------------------------------------*/
|
---|
| 1064 | /* Check a sector if it is an FAT boot record */
|
---|
| 1065 | /*-----------------------------------------------------------------------*/
|
---|
| 1066 |
|
---|
| 1067 | static
|
---|
| 1068 | BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
|
---|
| 1069 | FATFS *fs,
|
---|
| 1070 | BYTE *buf, /* Working buffer */
|
---|
| 1071 | DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
|
---|
| 1072 | )
|
---|
| 1073 | {
|
---|
| 1074 | if (disk_readp(buf, sect, 510, 2)) /* Read the boot record */
|
---|
| 1075 | return 3;
|
---|
| 1076 | if (LD_WORD(buf) != 0xAA55) /* Check record signature */
|
---|
| 1077 | return 2;
|
---|
| 1078 |
|
---|
| 1079 | if (!_FS_32ONLY && !disk_readp(buf, sect, BS_FilSysType, 2) && LD_WORD(buf) == 0x4146) /* Check FAT12/16 */
|
---|
| 1080 | return 0;
|
---|
| 1081 | if (_FS_FAT32 && !disk_readp(buf, sect, BS_FilSysType32, 2) && LD_WORD(buf) == 0x4146) /* Check FAT32 */
|
---|
| 1082 | return 0;
|
---|
| 1083 | return 1;
|
---|
| 1084 | }
|
---|
| 1085 |
|
---|
| 1086 |
|
---|
| 1087 |
|
---|
| 1088 |
|
---|
| 1089 | /*--------------------------------------------------------------------------
|
---|
| 1090 |
|
---|
| 1091 | Public Functions
|
---|
| 1092 |
|
---|
| 1093 | --------------------------------------------------------------------------*/
|
---|
| 1094 |
|
---|
| 1095 |
|
---|
| 1096 |
|
---|
| 1097 | /*-----------------------------------------------------------------------*/
|
---|
| 1098 | /* Mount/Unmount a Locical Drive */
|
---|
| 1099 | /*-----------------------------------------------------------------------*/
|
---|
| 1100 |
|
---|
| 1101 | FRESULT pf_mount (
|
---|
| 1102 | FATFS *fs /* Pointer to new file system object */
|
---|
| 1103 | )
|
---|
| 1104 | {
|
---|
| 1105 | BYTE fmt, buf[36];
|
---|
| 1106 | DWORD bsect, fsize, tsect, mclst;
|
---|
| 1107 |
|
---|
| 1108 | if (disk_get_status() & STA_NOINIT) /* Check if the drive is ready or not */
|
---|
| 1109 | return FR_NOT_READY;
|
---|
| 1110 |
|
---|
| 1111 | /* Search FAT partition on the drive */
|
---|
| 1112 | bsect = 0;
|
---|
| 1113 | fmt = check_fs(fs, buf, bsect); /* Check sector 0 as an SFD format */
|
---|
| 1114 | if (fmt == 1) { /* Not an FAT boot record, it may be FDISK format */
|
---|
| 1115 | /* Check a partition listed in top of the partition table */
|
---|
| 1116 | if (disk_readp(buf, bsect, MBR_Table, 16)) { /* 1st partition entry */
|
---|
| 1117 | fmt = 3;
|
---|
| 1118 | } else {
|
---|
| 1119 | if (buf[4]) { /* Is the partition existing? */
|
---|
| 1120 | bsect = LD_DWORD(&buf[8]); /* Partition offset in LBA */
|
---|
| 1121 | fmt = check_fs(fs, buf, bsect); /* Check the partition */
|
---|
| 1122 | }
|
---|
| 1123 | }
|
---|
| 1124 | }
|
---|
| 1125 | if (fmt == 3) return FR_DISK_ERR;
|
---|
| 1126 | if (fmt) return FR_NO_FILESYSTEM; /* No valid FAT patition is found */
|
---|
| 1127 |
|
---|
| 1128 | /* Initialize the file system object */
|
---|
| 1129 | if (disk_readp(buf, bsect, 13, sizeof (buf))) return FR_DISK_ERR;
|
---|
| 1130 |
|
---|
| 1131 | fsize = LD_WORD(buf+BPB_FATSz16-13); /* Number of sectors per FAT */
|
---|
| 1132 | if (!fsize) fsize = LD_DWORD(buf+BPB_FATSz32-13);
|
---|
| 1133 |
|
---|
| 1134 | fsize *= buf[BPB_NumFATs-13]; /* Number of sectors in FAT area */
|
---|
| 1135 | fs->fatbase = bsect + LD_WORD(buf+BPB_RsvdSecCnt-13); /* FAT start sector (lba) */
|
---|
| 1136 | fs->csize = buf[BPB_SecPerClus-13]; /* Number of sectors per cluster */
|
---|
| 1137 | fs->n_rootdir = LD_WORD(buf+BPB_RootEntCnt-13); /* Nmuber of root directory entries */
|
---|
| 1138 | tsect = LD_WORD(buf+BPB_TotSec16-13); /* Number of sectors on the file system */
|
---|
| 1139 | if (!tsect) tsect = LD_DWORD(buf+BPB_TotSec32-13);
|
---|
| 1140 | mclst = (tsect /* Last cluster# + 1 */
|
---|
| 1141 | - LD_WORD(buf+BPB_RsvdSecCnt-13) - fsize - fs->n_rootdir / 16
|
---|
| 1142 | ) / fs->csize + 2;
|
---|
| 1143 | fs->n_fatent = (CLUST)mclst;
|
---|
| 1144 |
|
---|
| 1145 | fmt = 0; /* Determine the FAT sub type */
|
---|
| 1146 | if (_FS_FAT12 && mclst < 0xFF7)
|
---|
| 1147 | fmt = FS_FAT12;
|
---|
| 1148 | if (_FS_FAT16 && mclst >= 0xFF8 && mclst < 0xFFF7)
|
---|
| 1149 | fmt = FS_FAT16;
|
---|
| 1150 | if (_FS_FAT32 && mclst >= 0xFFF7)
|
---|
| 1151 | fmt = FS_FAT32;
|
---|
| 1152 | if (!fmt) return FR_NO_FILESYSTEM;
|
---|
| 1153 | fs->fs_type = fmt;
|
---|
| 1154 |
|
---|
| 1155 | if (_FS_32ONLY || (_FS_FAT32 && fmt == FS_FAT32))
|
---|
| 1156 | fs->dirbase = LD_DWORD(buf+(BPB_RootClus-13)); /* Root directory start cluster */
|
---|
| 1157 | else
|
---|
| 1158 | fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
|
---|
| 1159 | fs->database = fs->fatbase + fsize + fs->n_rootdir / 16; /* Data start sector (lba) */
|
---|
| 1160 |
|
---|
| 1161 | fs->flag = 0;
|
---|
| 1162 |
|
---|
| 1163 | return FR_OK;
|
---|
| 1164 | }
|
---|
| 1165 |
|
---|
| 1166 |
|
---|
| 1167 |
|
---|
| 1168 |
|
---|
| 1169 | /*-----------------------------------------------------------------------*/
|
---|
| 1170 | /* Open or Create a File */
|
---|
| 1171 | /*-----------------------------------------------------------------------*/
|
---|
| 1172 |
|
---|
| 1173 | FRESULT pf_open (
|
---|
| 1174 | FATFS *fs,
|
---|
| 1175 | const char *path /* Pointer to the file name */
|
---|
| 1176 | )
|
---|
| 1177 | {
|
---|
| 1178 | FRESULT res;
|
---|
| 1179 | DIR dj;
|
---|
| 1180 | BYTE sp[12], dir[32];
|
---|
| 1181 |
|
---|
| 1182 |
|
---|
| 1183 | if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
---|
| 1184 |
|
---|
| 1185 | fs->flag = 0;
|
---|
| 1186 | dj.fs = fs;
|
---|
| 1187 | dj.fn = sp;
|
---|
| 1188 | #if _USE_LFN
|
---|
| 1189 | dj.lfn = LfnBuf;
|
---|
| 1190 | #endif
|
---|
| 1191 | res = follow_path(&dj, dir, path); /* Follow the file path */
|
---|
| 1192 | if (res != FR_OK) return res; /* Follow failed */
|
---|
| 1193 | if (!dir[0] || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
|
---|
| 1194 | return FR_NO_FILE;
|
---|
| 1195 |
|
---|
| 1196 | fs->org_clust = get_clust(fs, dir); /* File start cluster */
|
---|
| 1197 | fs->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
|
---|
| 1198 | fs->fptr = 0; /* File pointer */
|
---|
| 1199 | fs->flag = FA_OPENED;
|
---|
| 1200 |
|
---|
| 1201 | return FR_OK;
|
---|
| 1202 | }
|
---|
| 1203 |
|
---|
| 1204 |
|
---|
| 1205 |
|
---|
| 1206 |
|
---|
| 1207 | /*-----------------------------------------------------------------------*/
|
---|
| 1208 | /* Read File */
|
---|
| 1209 | /*-----------------------------------------------------------------------*/
|
---|
| 1210 | #if _USE_READ
|
---|
| 1211 |
|
---|
| 1212 | FRESULT pf_read (
|
---|
| 1213 | FATFS *fs,
|
---|
| 1214 | void* buff, /* Pointer to the read buffer (NULL:Forward data to the stream)*/
|
---|
| 1215 | UINT btr, /* Number of bytes to read */
|
---|
| 1216 | UINT* br /* Pointer to number of bytes read */
|
---|
| 1217 | )
|
---|
| 1218 | {
|
---|
| 1219 | DRESULT dr;
|
---|
| 1220 | CLUST clst;
|
---|
| 1221 | DWORD sect, remain;
|
---|
| 1222 | UINT rcnt;
|
---|
| 1223 | BYTE cs, *rbuff = buff;
|
---|
| 1224 |
|
---|
| 1225 |
|
---|
| 1226 | *br = 0;
|
---|
| 1227 | if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
---|
| 1228 | if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
---|
| 1229 | return FR_NOT_OPENED;
|
---|
| 1230 |
|
---|
| 1231 | remain = fs->fsize - fs->fptr;
|
---|
| 1232 | if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
|
---|
| 1233 |
|
---|
| 1234 | while (btr) { /* Repeat until all data transferred */
|
---|
| 1235 | if ((fs->fptr % 512) == 0) { /* On the sector boundary? */
|
---|
| 1236 | cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
|
---|
| 1237 | if (!cs) { /* On the cluster boundary? */
|
---|
| 1238 | if (fs->fptr == 0) /* On the top of the file? */
|
---|
| 1239 | clst = fs->org_clust;
|
---|
| 1240 | else
|
---|
| 1241 | clst = get_fat(fs, fs->curr_clust);
|
---|
| 1242 | if (clst <= 1) ABORT(FR_DISK_ERR);
|
---|
| 1243 | fs->curr_clust = clst; /* Update current cluster */
|
---|
| 1244 | }
|
---|
| 1245 | sect = clust2sect(fs, fs->curr_clust); /* Get current sector */
|
---|
| 1246 | if (!sect) ABORT(FR_DISK_ERR);
|
---|
| 1247 | fs->dsect = sect + cs;
|
---|
| 1248 | }
|
---|
| 1249 | rcnt = 512 - (UINT)fs->fptr % 512; /* Get partial sector data from sector buffer */
|
---|
| 1250 | if (rcnt > btr) rcnt = btr;
|
---|
| 1251 | dr = disk_readp(!buff ? 0 : rbuff, fs->dsect, (UINT)fs->fptr % 512, rcnt);
|
---|
| 1252 | if (dr) ABORT(FR_DISK_ERR);
|
---|
| 1253 | fs->fptr += rcnt; rbuff += rcnt; /* Update pointers and counters */
|
---|
| 1254 | btr -= rcnt; *br += rcnt;
|
---|
| 1255 | }
|
---|
| 1256 |
|
---|
| 1257 | return FR_OK;
|
---|
| 1258 | }
|
---|
| 1259 | #endif
|
---|
| 1260 |
|
---|
| 1261 |
|
---|
| 1262 |
|
---|
| 1263 | /*-----------------------------------------------------------------------*/
|
---|
| 1264 | /* Write File */
|
---|
| 1265 | /*-----------------------------------------------------------------------*/
|
---|
| 1266 | #if _USE_WRITE
|
---|
| 1267 |
|
---|
| 1268 | FRESULT pf_write (
|
---|
| 1269 | FATFS *fs,
|
---|
| 1270 | const void* buff, /* Pointer to the data to be written */
|
---|
| 1271 | UINT btw, /* Number of bytes to write (0:Finalize the current write operation) */
|
---|
| 1272 | UINT* bw /* Pointer to number of bytes written */
|
---|
| 1273 | )
|
---|
| 1274 | {
|
---|
| 1275 | CLUST clst;
|
---|
| 1276 | DWORD sect, remain;
|
---|
| 1277 | const BYTE *p = buff;
|
---|
| 1278 | BYTE cs;
|
---|
| 1279 | UINT wcnt;
|
---|
| 1280 |
|
---|
| 1281 |
|
---|
| 1282 | *bw = 0;
|
---|
| 1283 | if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
---|
| 1284 | if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
---|
| 1285 | return FR_NOT_OPENED;
|
---|
| 1286 |
|
---|
| 1287 | if (!btw) { /* Finalize request */
|
---|
| 1288 | if ((fs->flag & FA__WIP) && disk_writep(0, 0)) ABORT(FR_DISK_ERR);
|
---|
| 1289 | fs->flag &= ~FA__WIP;
|
---|
| 1290 | return FR_OK;
|
---|
| 1291 | } else { /* Write data request */
|
---|
| 1292 | if (!(fs->flag & FA__WIP)) /* Round-down fptr to the sector boundary */
|
---|
| 1293 | fs->fptr &= 0xFFFFFE00;
|
---|
| 1294 | }
|
---|
| 1295 | remain = fs->fsize - fs->fptr;
|
---|
| 1296 | if (btw > remain) btw = (UINT)remain; /* Truncate btw by remaining bytes */
|
---|
| 1297 |
|
---|
| 1298 | while (btw) { /* Repeat until all data transferred */
|
---|
| 1299 | if ((UINT)fs->fptr % 512 == 0) { /* On the sector boundary? */
|
---|
| 1300 | cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
|
---|
| 1301 | if (!cs) { /* On the cluster boundary? */
|
---|
| 1302 | if (fs->fptr == 0) /* On the top of the file? */
|
---|
| 1303 | clst = fs->org_clust;
|
---|
| 1304 | else
|
---|
| 1305 | clst = get_fat(fs, fs->curr_clust);
|
---|
| 1306 | if (clst <= 1) ABORT(FR_DISK_ERR);
|
---|
| 1307 | fs->curr_clust = clst; /* Update current cluster */
|
---|
| 1308 | }
|
---|
| 1309 | sect = clust2sect(fs, fs->curr_clust); /* Get current sector */
|
---|
| 1310 | if (!sect) ABORT(FR_DISK_ERR);
|
---|
| 1311 | fs->dsect = sect + cs;
|
---|
| 1312 | if (disk_writep(0, fs->dsect)) ABORT(FR_DISK_ERR); /* Initiate a sector write operation */
|
---|
| 1313 | fs->flag |= FA__WIP;
|
---|
| 1314 | }
|
---|
| 1315 | wcnt = 512 - (UINT)fs->fptr % 512; /* Number of bytes to write to the sector */
|
---|
| 1316 | if (wcnt > btw) wcnt = btw;
|
---|
| 1317 | if (disk_writep(p, wcnt)) ABORT(FR_DISK_ERR); /* Send data to the sector */
|
---|
| 1318 | fs->fptr += wcnt; p += wcnt; /* Update pointers and counters */
|
---|
| 1319 | btw -= wcnt; *bw += wcnt;
|
---|
| 1320 | if ((UINT)fs->fptr % 512 == 0) {
|
---|
| 1321 | if (disk_writep(0, 0)) ABORT(FR_DISK_ERR); /* Finalize the currtent secter write operation */
|
---|
| 1322 | fs->flag &= ~FA__WIP;
|
---|
| 1323 | }
|
---|
| 1324 | }
|
---|
| 1325 |
|
---|
| 1326 | return FR_OK;
|
---|
| 1327 | }
|
---|
| 1328 | #endif
|
---|
| 1329 |
|
---|
| 1330 |
|
---|
| 1331 |
|
---|
| 1332 | /*-----------------------------------------------------------------------*/
|
---|
| 1333 | /* Seek File R/W Pointer */
|
---|
| 1334 | /*-----------------------------------------------------------------------*/
|
---|
| 1335 | #if _USE_LSEEK
|
---|
| 1336 |
|
---|
| 1337 | FRESULT pf_lseek (
|
---|
| 1338 | FATFS *fs,
|
---|
| 1339 | DWORD ofs /* File pointer from top of file */
|
---|
| 1340 | )
|
---|
| 1341 | {
|
---|
| 1342 | CLUST clst;
|
---|
| 1343 | DWORD bcs, sect, ifptr;
|
---|
| 1344 |
|
---|
| 1345 |
|
---|
| 1346 | if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
---|
| 1347 | if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
---|
| 1348 | return FR_NOT_OPENED;
|
---|
| 1349 |
|
---|
| 1350 | if (ofs > fs->fsize) ofs = fs->fsize; /* Clip offset with the file size */
|
---|
| 1351 | ifptr = fs->fptr;
|
---|
| 1352 | fs->fptr = 0;
|
---|
| 1353 | if (ofs > 0) {
|
---|
| 1354 | bcs = (DWORD)fs->csize * 512; /* Cluster size (byte) */
|
---|
| 1355 | if (ifptr > 0 &&
|
---|
| 1356 | (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
|
---|
| 1357 | fs->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
|
---|
| 1358 | ofs -= fs->fptr;
|
---|
| 1359 | clst = fs->curr_clust;
|
---|
| 1360 | } else { /* When seek to back cluster, */
|
---|
| 1361 | clst = fs->org_clust; /* start from the first cluster */
|
---|
| 1362 | fs->curr_clust = clst;
|
---|
| 1363 | }
|
---|
| 1364 | while (ofs > bcs) { /* Cluster following loop */
|
---|
| 1365 | clst = get_fat(fs, clst); /* Follow cluster chain */
|
---|
| 1366 | if (clst <= 1 || clst >= fs->n_fatent) ABORT(FR_DISK_ERR);
|
---|
| 1367 | fs->curr_clust = clst;
|
---|
| 1368 | fs->fptr += bcs;
|
---|
| 1369 | ofs -= bcs;
|
---|
| 1370 | }
|
---|
| 1371 | fs->fptr += ofs;
|
---|
| 1372 | sect = clust2sect(fs, clst); /* Current sector */
|
---|
| 1373 | if (!sect) ABORT(FR_DISK_ERR);
|
---|
| 1374 | fs->dsect = sect + (fs->fptr / 512 & (fs->csize - 1));
|
---|
| 1375 | }
|
---|
| 1376 |
|
---|
| 1377 | return FR_OK;
|
---|
| 1378 | }
|
---|
| 1379 | #endif
|
---|
| 1380 |
|
---|
| 1381 |
|
---|
| 1382 |
|
---|
| 1383 | /*-----------------------------------------------------------------------*/
|
---|
| 1384 | /* Create a Directroy Object */
|
---|
| 1385 | /*-----------------------------------------------------------------------*/
|
---|
| 1386 | #if _USE_DIR
|
---|
| 1387 |
|
---|
| 1388 | FRESULT pf_opendir (
|
---|
| 1389 | DIR *dj, /* Pointer to directory object to create */
|
---|
| 1390 | const char *path /* Pointer to the directory path */
|
---|
| 1391 | )
|
---|
| 1392 | {
|
---|
| 1393 | FRESULT res;
|
---|
| 1394 | BYTE sp[12], dir[32];
|
---|
| 1395 | FATFS *fs = dj->fs;
|
---|
| 1396 |
|
---|
| 1397 |
|
---|
| 1398 | if (!fs) { /* Check file system */
|
---|
| 1399 | res = FR_NOT_ENABLED;
|
---|
| 1400 | } else {
|
---|
| 1401 | dj->fn = sp;
|
---|
| 1402 | #if _USE_LFN
|
---|
| 1403 | dj->lfn = LfnBuf;
|
---|
| 1404 | #endif
|
---|
| 1405 | res = follow_path(dj, dir, path); /* Follow the path to the directory */
|
---|
| 1406 | if (res == FR_OK) { /* Follow completed */
|
---|
| 1407 | if (dir[0]) { /* It is not the root dir */
|
---|
| 1408 | if (dir[DIR_Attr] & AM_DIR) /* The object is a directory */
|
---|
| 1409 | dj->sclust = get_clust(fs, dir);
|
---|
| 1410 | else /* The object is not a directory */
|
---|
| 1411 | res = FR_NO_FILE;
|
---|
| 1412 | }
|
---|
| 1413 | if (res == FR_OK)
|
---|
| 1414 | res = dir_rewind(dj); /* Rewind dir */
|
---|
| 1415 | }
|
---|
| 1416 | }
|
---|
| 1417 |
|
---|
| 1418 | return res;
|
---|
| 1419 | }
|
---|
| 1420 |
|
---|
| 1421 |
|
---|
| 1422 |
|
---|
| 1423 |
|
---|
| 1424 | /*-----------------------------------------------------------------------*/
|
---|
| 1425 | /* Read Directory Entry in Sequense */
|
---|
| 1426 | /*-----------------------------------------------------------------------*/
|
---|
| 1427 |
|
---|
| 1428 | FRESULT pf_readdir (
|
---|
| 1429 | DIR *dj, /* Pointer to the open directory object */
|
---|
| 1430 | FILINFO *fno /* Pointer to file information to return */
|
---|
| 1431 | )
|
---|
| 1432 | {
|
---|
| 1433 | FRESULT res;
|
---|
| 1434 | BYTE sp[12], dir[32];
|
---|
| 1435 | FATFS *fs = dj->fs;
|
---|
| 1436 |
|
---|
| 1437 |
|
---|
| 1438 | if (!fs) { /* Check file system */
|
---|
| 1439 | res = FR_NOT_ENABLED;
|
---|
| 1440 | } else {
|
---|
| 1441 | dj->fn = sp;
|
---|
| 1442 | if (!fno) {
|
---|
| 1443 | res = dir_rewind(dj);
|
---|
| 1444 | } else {
|
---|
| 1445 | res = dir_read(dj, dir); /* Get current directory item */
|
---|
| 1446 | if (res == FR_NO_FILE) res = FR_OK;
|
---|
| 1447 | if (res == FR_OK) { /* A valid entry is found */
|
---|
| 1448 | get_fileinfo(dj, dir, fno); /* Get the object information */
|
---|
| 1449 | res = dir_next(dj); /* Increment read index for next */
|
---|
| 1450 | if (res == FR_NO_FILE) res = FR_OK;
|
---|
| 1451 | }
|
---|
| 1452 | }
|
---|
| 1453 | }
|
---|
| 1454 |
|
---|
| 1455 | return res;
|
---|
| 1456 | }
|
---|
| 1457 |
|
---|
| 1458 | #endif /* _USE_DIR */
|
---|
| 1459 |
|
---|