[1] | 1 | /*----------------------------------------------------------------------------/
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| 2 | / FatFs - Generic FAT file system module R0.12c /
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| 3 | /-----------------------------------------------------------------------------/
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| 4 | /
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| 5 | / Copyright (C) 2017, ChaN, all right reserved.
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| 6 | /
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| 7 | / FatFs module is an open source software. Redistribution and use of FatFs in
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| 8 | / source and binary forms, with or without modification, are permitted provided
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| 9 | / that the following condition is met:
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| 10 | /
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| 11 | / 1. Redistributions of source code must retain the above copyright notice,
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| 12 | / this condition and the following disclaimer.
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| 13 | /
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| 14 | / This software is provided by the copyright holder and contributors "AS IS"
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| 15 | / and any warranties related to this software are DISCLAIMED.
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| 16 | / The copyright owner or contributors be NOT LIABLE for any damages caused
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| 17 | / by use of this software.
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| 18 | /----------------------------------------------------------------------------*/
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| 19 |
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| 20 |
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| 21 | #include "ff.h" /* Declarations of FatFs API */
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| 22 | #include "diskio.h" /* Declarations of device I/O functions */
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| 23 |
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| 24 |
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| 25 | /*--------------------------------------------------------------------------
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| 26 |
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| 27 | Module Private Definitions
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| 28 |
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| 29 | ---------------------------------------------------------------------------*/
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| 30 |
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| 31 | #if _FATFS != 68300 /* Revision ID */
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| 32 | #error Wrong include file (ff.h).
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| 33 | #endif
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| 34 |
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| 35 |
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| 36 | /* DBCS code ranges and SBCS upper conversion tables */
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| 37 |
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| 38 | #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
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| 39 | #define _DF1S 0x81 /* DBC 1st byte range 1 start */
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| 40 | #define _DF1E 0x9F /* DBC 1st byte range 1 end */
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| 41 | #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
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| 42 | #define _DF2E 0xFC /* DBC 1st byte range 2 end */
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| 43 | #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
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| 44 | #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
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| 45 | #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
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| 46 | #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
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| 47 |
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| 48 | #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
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| 49 | #define _DF1S 0x81
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| 50 | #define _DF1E 0xFE
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| 51 | #define _DS1S 0x40
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| 52 | #define _DS1E 0x7E
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| 53 | #define _DS2S 0x80
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| 54 | #define _DS2E 0xFE
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| 55 |
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| 56 | #elif _CODE_PAGE == 949 /* Korean */
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| 57 | #define _DF1S 0x81
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| 58 | #define _DF1E 0xFE
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| 59 | #define _DS1S 0x41
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| 60 | #define _DS1E 0x5A
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| 61 | #define _DS2S 0x61
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| 62 | #define _DS2E 0x7A
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| 63 | #define _DS3S 0x81
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| 64 | #define _DS3E 0xFE
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| 65 |
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| 66 | #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
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| 67 | #define _DF1S 0x81
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| 68 | #define _DF1E 0xFE
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| 69 | #define _DS1S 0x40
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| 70 | #define _DS1E 0x7E
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| 71 | #define _DS2S 0xA1
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| 72 | #define _DS2E 0xFE
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| 73 |
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| 74 | #elif _CODE_PAGE == 437 /* U.S. */
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| 75 | #define _DF1S 0
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| 76 | #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
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| 77 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 78 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 79 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 80 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 81 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 82 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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| 83 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 84 |
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| 85 | #elif _CODE_PAGE == 720 /* Arabic */
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| 86 | #define _DF1S 0
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| 87 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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| 88 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 89 | 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 90 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 91 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 92 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 93 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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| 94 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 95 |
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| 96 | #elif _CODE_PAGE == 737 /* Greek */
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| 97 | #define _DF1S 0
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| 98 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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| 99 | 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
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| 100 | 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
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| 101 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 102 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 103 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 104 | 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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| 105 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 106 |
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| 107 | #elif _CODE_PAGE == 771 /* KBL */
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| 108 | #define _DF1S 0
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| 109 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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| 110 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 111 | 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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| 112 | 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, \
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| 114 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
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| 115 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 116 | 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
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| 117 |
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| 118 | #elif _CODE_PAGE == 775 /* Baltic */
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| 119 | #define _DF1S 0
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| 120 | #define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
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| 121 | 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
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| 122 | 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 123 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 124 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 125 | 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, \
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| 127 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 128 |
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| 129 | #elif _CODE_PAGE == 850 /* Latin 1 */
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| 130 | #define _DF1S 0
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| 131 | #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
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| 132 | 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
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| 133 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 134 | 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 135 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 136 | 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
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| 137 | 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
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| 138 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 139 |
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| 140 | #elif _CODE_PAGE == 852 /* Latin 2 */
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| 141 | #define _DF1S 0
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| 142 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
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| 143 | 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
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| 144 | 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
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| 145 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
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| 146 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 147 | 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 148 | 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
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| 149 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
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| 150 |
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| 151 | #elif _CODE_PAGE == 855 /* Cyrillic */
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| 152 | #define _DF1S 0
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| 153 | #define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
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| 154 | 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
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| 155 | 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
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| 156 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
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| 157 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 158 | 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
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| 159 | 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
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| 160 | 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
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| 161 |
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| 162 | #elif _CODE_PAGE == 857 /* Turkish */
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| 163 | #define _DF1S 0
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| 164 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
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| 165 | 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
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| 166 | 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 167 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 168 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 169 | 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 170 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
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| 171 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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| 172 |
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| 173 | #elif _CODE_PAGE == 860 /* Portuguese */
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| 174 | #define _DF1S 0
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| 175 | #define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
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| 176 | 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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| 177 | 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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| 178 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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| 179 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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| 180 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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| 181 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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| 182 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 183 |
|
---|
| 184 | #elif _CODE_PAGE == 861 /* Icelandic */
|
---|
| 185 | #define _DF1S 0
|
---|
| 186 | #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
|
---|
| 187 | 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 188 | 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 189 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 190 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 191 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 192 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
---|
| 193 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 194 |
|
---|
| 195 | #elif _CODE_PAGE == 862 /* Hebrew */
|
---|
| 196 | #define _DF1S 0
|
---|
| 197 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 198 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 199 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 200 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 201 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 202 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 203 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
---|
| 204 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 205 |
|
---|
| 206 | #elif _CODE_PAGE == 863 /* Canadian-French */
|
---|
| 207 | #define _DF1S 0
|
---|
| 208 | #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
|
---|
| 209 | 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
|
---|
| 210 | 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 211 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 212 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 213 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 214 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
---|
| 215 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 216 |
|
---|
| 217 | #elif _CODE_PAGE == 864 /* Arabic */
|
---|
| 218 | #define _DF1S 0
|
---|
| 219 | #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
|
---|
| 220 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 221 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 222 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 223 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 224 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 225 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
---|
| 226 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 227 |
|
---|
| 228 | #elif _CODE_PAGE == 865 /* Nordic */
|
---|
| 229 | #define _DF1S 0
|
---|
| 230 | #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
|
---|
| 231 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 232 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 233 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 234 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 235 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 236 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
---|
| 237 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 238 |
|
---|
| 239 | #elif _CODE_PAGE == 866 /* Russian */
|
---|
| 240 | #define _DF1S 0
|
---|
| 241 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 242 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 243 | 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 244 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 245 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 246 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
---|
| 247 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
---|
| 248 | 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
---|
| 249 |
|
---|
| 250 | #elif _CODE_PAGE == 869 /* Greek 2 */
|
---|
| 251 | #define _DF1S 0
|
---|
| 252 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
---|
| 253 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
|
---|
| 254 | 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
---|
| 255 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
---|
| 256 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
---|
| 257 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
|
---|
| 258 | 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
|
---|
| 259 | 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
|
---|
| 260 |
|
---|
| 261 | #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
|
---|
| 262 | #if _USE_LFN != 0
|
---|
| 263 | #error Cannot enable LFN without valid code page.
|
---|
| 264 | #endif
|
---|
| 265 | #define _DF1S 0
|
---|
| 266 |
|
---|
| 267 | #else
|
---|
| 268 | #error Unknown code page
|
---|
| 269 |
|
---|
| 270 | #endif
|
---|
| 271 |
|
---|
| 272 |
|
---|
| 273 | /* Character code support macros */
|
---|
| 274 | #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
|
---|
| 275 | #define IsLower(c) (((c)>='a')&&((c)<='z'))
|
---|
| 276 | #define IsDigit(c) (((c)>='0')&&((c)<='9'))
|
---|
| 277 |
|
---|
| 278 | #if _DF1S != 0 /* Code page is DBCS */
|
---|
| 279 |
|
---|
| 280 | #ifdef _DF2S /* Two 1st byte areas */
|
---|
| 281 | #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
|
---|
| 282 | #else /* One 1st byte area */
|
---|
| 283 | #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
|
---|
| 284 | #endif
|
---|
| 285 |
|
---|
| 286 | #ifdef _DS3S /* Three 2nd byte areas */
|
---|
| 287 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
|
---|
| 288 | #else /* Two 2nd byte areas */
|
---|
| 289 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
|
---|
| 290 | #endif
|
---|
| 291 |
|
---|
| 292 | #else /* Code page is SBCS */
|
---|
| 293 |
|
---|
| 294 | #define IsDBCS1(c) 0
|
---|
| 295 | #define IsDBCS2(c) 0
|
---|
| 296 |
|
---|
| 297 | #endif /* _DF1S */
|
---|
| 298 |
|
---|
| 299 |
|
---|
| 300 | /* Additional file attribute bits for internal use */
|
---|
| 301 | #define AM_VOL 0x08 /* Volume label */
|
---|
| 302 | #define AM_LFN 0x0F /* LFN entry */
|
---|
| 303 | #define AM_MASK 0x3F /* Mask of defined bits */
|
---|
| 304 |
|
---|
| 305 |
|
---|
| 306 | /* Additional file access control and file status flags for internal use */
|
---|
| 307 | #define FA_SEEKEND 0x20 /* Seek to end of the file on file open */
|
---|
| 308 | #define FA_MODIFIED 0x40 /* File has been modified */
|
---|
| 309 | #define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */
|
---|
| 310 |
|
---|
| 311 |
|
---|
| 312 | /* Name status flags in fn[] */
|
---|
| 313 | #define NSFLAG 11 /* Index of the name status byte */
|
---|
| 314 | #define NS_LOSS 0x01 /* Out of 8.3 format */
|
---|
| 315 | #define NS_LFN 0x02 /* Force to create LFN entry */
|
---|
| 316 | #define NS_LAST 0x04 /* Last segment */
|
---|
| 317 | #define NS_BODY 0x08 /* Lower case flag (body) */
|
---|
| 318 | #define NS_EXT 0x10 /* Lower case flag (ext) */
|
---|
| 319 | #define NS_DOT 0x20 /* Dot entry */
|
---|
| 320 | #define NS_NOLFN 0x40 /* Do not find LFN */
|
---|
| 321 | #define NS_NONAME 0x80 /* Not followed */
|
---|
| 322 |
|
---|
| 323 |
|
---|
| 324 | /* Limits and boundaries */
|
---|
| 325 | #define MAX_DIR 0x200000 /* Max size of FAT directory */
|
---|
| 326 | #define MAX_DIR_EX 0x10000000 /* Max size of exFAT directory */
|
---|
| 327 | #define MAX_FAT12 0xFF5 /* Max FAT12 clusters (differs from specs, but correct for real DOS/Windows behavior) */
|
---|
| 328 | #define MAX_FAT16 0xFFF5 /* Max FAT16 clusters (differs from specs, but correct for real DOS/Windows behavior) */
|
---|
| 329 | #define MAX_FAT32 0x0FFFFFF5 /* Max FAT32 clusters (not specified, practical limit) */
|
---|
| 330 | #define MAX_EXFAT 0x7FFFFFFD /* Max exFAT clusters (differs from specs, implementation limit) */
|
---|
| 331 |
|
---|
| 332 |
|
---|
| 333 | /* FatFs refers the FAT structure as simple byte array instead of structure member
|
---|
| 334 | / because the C structure is not binary compatible between different platforms */
|
---|
| 335 |
|
---|
| 336 | #define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */
|
---|
| 337 | #define BS_OEMName 3 /* OEM name (8-byte) */
|
---|
| 338 | #define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */
|
---|
| 339 | #define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */
|
---|
| 340 | #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */
|
---|
| 341 | #define BPB_NumFATs 16 /* Number of FATs (BYTE) */
|
---|
| 342 | #define BPB_RootEntCnt 17 /* Size of root directory area for FAT12/16 [entry] (WORD) */
|
---|
| 343 | #define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */
|
---|
| 344 | #define BPB_Media 21 /* Media descriptor byte (BYTE) */
|
---|
| 345 | #define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */
|
---|
| 346 | #define BPB_SecPerTrk 24 /* Track size for int13h [sector] (WORD) */
|
---|
| 347 | #define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */
|
---|
| 348 | #define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */
|
---|
| 349 | #define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */
|
---|
| 350 | #define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */
|
---|
| 351 | #define BS_NTres 37 /* Error flag (BYTE) */
|
---|
| 352 | #define BS_BootSig 38 /* Extended boot signature (BYTE) */
|
---|
| 353 | #define BS_VolID 39 /* Volume serial number (DWORD) */
|
---|
| 354 | #define BS_VolLab 43 /* Volume label string (8-byte) */
|
---|
| 355 | #define BS_FilSysType 54 /* File system type string (8-byte) */
|
---|
| 356 | #define BS_BootCode 62 /* Boot code (448-byte) */
|
---|
| 357 | #define BS_55AA 510 /* Signature word (WORD) */
|
---|
| 358 |
|
---|
| 359 | #define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */
|
---|
| 360 | #define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */
|
---|
| 361 | #define BPB_FSVer32 42 /* FAT32: File system version (WORD) */
|
---|
| 362 | #define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */
|
---|
| 363 | #define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */
|
---|
| 364 | #define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */
|
---|
| 365 | #define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */
|
---|
| 366 | #define BS_NTres32 65 /* FAT32: Error flag (BYTE) */
|
---|
| 367 | #define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */
|
---|
| 368 | #define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */
|
---|
| 369 | #define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */
|
---|
| 370 | #define BS_FilSysType32 82 /* FAT32: File system type string (8-byte) */
|
---|
| 371 | #define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */
|
---|
| 372 |
|
---|
| 373 | #define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */
|
---|
| 374 | #define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */
|
---|
| 375 | #define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */
|
---|
| 376 | #define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */
|
---|
| 377 | #define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */
|
---|
| 378 | #define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */
|
---|
| 379 | #define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */
|
---|
| 380 | #define BPB_RootClusEx 96 /* exFAT: Root directory start cluster (DWORD) */
|
---|
| 381 | #define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */
|
---|
| 382 | #define BPB_FSVerEx 104 /* exFAT: File system version (WORD) */
|
---|
| 383 | #define BPB_VolFlagEx 106 /* exFAT: Volume flags (BYTE) */
|
---|
| 384 | #define BPB_ActFatEx 107 /* exFAT: Active FAT flags (BYTE) */
|
---|
| 385 | #define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in unit of byte (BYTE) */
|
---|
| 386 | #define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in unit of sector (BYTE) */
|
---|
| 387 | #define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */
|
---|
| 388 | #define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */
|
---|
| 389 | #define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */
|
---|
| 390 | #define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */
|
---|
| 391 | #define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */
|
---|
| 392 |
|
---|
| 393 | #define DIR_Name 0 /* Short file name (11-byte) */
|
---|
| 394 | #define DIR_Attr 11 /* Attribute (BYTE) */
|
---|
| 395 | #define DIR_NTres 12 /* Lower case flag (BYTE) */
|
---|
| 396 | #define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */
|
---|
| 397 | #define DIR_CrtTime 14 /* Created time (DWORD) */
|
---|
| 398 | #define DIR_LstAccDate 18 /* Last accessed date (WORD) */
|
---|
| 399 | #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */
|
---|
| 400 | #define DIR_ModTime 22 /* Modified time (DWORD) */
|
---|
| 401 | #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */
|
---|
| 402 | #define DIR_FileSize 28 /* File size (DWORD) */
|
---|
| 403 | #define LDIR_Ord 0 /* LFN: LFN order and LLE flag (BYTE) */
|
---|
| 404 | #define LDIR_Attr 11 /* LFN: LFN attribute (BYTE) */
|
---|
| 405 | #define LDIR_Type 12 /* LFN: Entry type (BYTE) */
|
---|
| 406 | #define LDIR_Chksum 13 /* LFN: Checksum of the SFN (BYTE) */
|
---|
| 407 | #define LDIR_FstClusLO 26 /* LFN: MBZ field (WORD) */
|
---|
| 408 | #define XDIR_Type 0 /* exFAT: Type of exFAT directory entry (BYTE) */
|
---|
| 409 | #define XDIR_NumLabel 1 /* exFAT: Number of volume label characters (BYTE) */
|
---|
| 410 | #define XDIR_Label 2 /* exFAT: Volume label (11-WORD) */
|
---|
| 411 | #define XDIR_CaseSum 4 /* exFAT: Sum of case conversion table (DWORD) */
|
---|
| 412 | #define XDIR_NumSec 1 /* exFAT: Number of secondary entries (BYTE) */
|
---|
| 413 | #define XDIR_SetSum 2 /* exFAT: Sum of the set of directory entries (WORD) */
|
---|
| 414 | #define XDIR_Attr 4 /* exFAT: File attribute (WORD) */
|
---|
| 415 | #define XDIR_CrtTime 8 /* exFAT: Created time (DWORD) */
|
---|
| 416 | #define XDIR_ModTime 12 /* exFAT: Modified time (DWORD) */
|
---|
| 417 | #define XDIR_AccTime 16 /* exFAT: Last accessed time (DWORD) */
|
---|
| 418 | #define XDIR_CrtTime10 20 /* exFAT: Created time subsecond (BYTE) */
|
---|
| 419 | #define XDIR_ModTime10 21 /* exFAT: Modified time subsecond (BYTE) */
|
---|
| 420 | #define XDIR_CrtTZ 22 /* exFAT: Created timezone (BYTE) */
|
---|
| 421 | #define XDIR_ModTZ 23 /* exFAT: Modified timezone (BYTE) */
|
---|
| 422 | #define XDIR_AccTZ 24 /* exFAT: Last accessed timezone (BYTE) */
|
---|
| 423 | #define XDIR_GenFlags 33 /* exFAT: General secondary flags (WORD) */
|
---|
| 424 | #define XDIR_NumName 35 /* exFAT: Number of file name characters (BYTE) */
|
---|
| 425 | #define XDIR_NameHash 36 /* exFAT: Hash of file name (WORD) */
|
---|
| 426 | #define XDIR_ValidFileSize 40 /* exFAT: Valid file size (QWORD) */
|
---|
| 427 | #define XDIR_FstClus 52 /* exFAT: First cluster of the file data (DWORD) */
|
---|
| 428 | #define XDIR_FileSize 56 /* exFAT: File/Directory size (QWORD) */
|
---|
| 429 |
|
---|
| 430 | #define SZDIRE 32 /* Size of a directory entry */
|
---|
| 431 | #define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */
|
---|
| 432 | #define RDDEM 0x05 /* Replacement of the character collides with DDEM */
|
---|
| 433 | #define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
|
---|
| 434 |
|
---|
| 435 | #define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */
|
---|
| 436 | #define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */
|
---|
| 437 | #define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */
|
---|
| 438 | #define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */
|
---|
| 439 |
|
---|
| 440 | #define MBR_Table 446 /* MBR: Offset of partition table in the MBR */
|
---|
| 441 | #define SZ_PTE 16 /* MBR: Size of a partition table entry */
|
---|
| 442 | #define PTE_Boot 0 /* MBR PTE: Boot indicator */
|
---|
| 443 | #define PTE_StHead 1 /* MBR PTE: Start head */
|
---|
| 444 | #define PTE_StSec 2 /* MBR PTE: Start sector */
|
---|
| 445 | #define PTE_StCyl 3 /* MBR PTE: Start cylinder */
|
---|
| 446 | #define PTE_System 4 /* MBR PTE: System ID */
|
---|
| 447 | #define PTE_EdHead 5 /* MBR PTE: End head */
|
---|
| 448 | #define PTE_EdSec 6 /* MBR PTE: End sector */
|
---|
| 449 | #define PTE_EdCyl 7 /* MBR PTE: End cylinder */
|
---|
| 450 | #define PTE_StLba 8 /* MBR PTE: Start in LBA */
|
---|
| 451 | #define PTE_SizLba 12 /* MBR PTE: Size in LBA */
|
---|
| 452 |
|
---|
| 453 |
|
---|
| 454 | /* Post process after fatal error on file operation */
|
---|
| 455 | #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
|
---|
| 456 |
|
---|
| 457 |
|
---|
| 458 | /* Reentrancy related */
|
---|
| 459 | #if _FS_REENTRANT
|
---|
| 460 | #if _USE_LFN == 1
|
---|
| 461 | #error Static LFN work area cannot be used at thread-safe configuration
|
---|
| 462 | #endif
|
---|
| 463 | #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
|
---|
| 464 | #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
|
---|
| 465 | #else
|
---|
| 466 | #define ENTER_FF(fs)
|
---|
| 467 | #define LEAVE_FF(fs, res) return res
|
---|
| 468 | #endif
|
---|
| 469 |
|
---|
| 470 |
|
---|
| 471 | /* Definitions of volume - partition conversion */
|
---|
| 472 | #if _MULTI_PARTITION
|
---|
| 473 | #define LD2PD(vol) VolToPart[vol].pd /* Get physical drive number */
|
---|
| 474 | #define LD2PT(vol) VolToPart[vol].pt /* Get partition index */
|
---|
| 475 | #else
|
---|
| 476 | #define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
|
---|
| 477 | #define LD2PT(vol) 0 /* Find first valid partition or in SFD */
|
---|
| 478 | #endif
|
---|
| 479 |
|
---|
| 480 |
|
---|
| 481 | /* Definitions of sector size */
|
---|
| 482 | #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)
|
---|
| 483 | #error Wrong sector size configuration
|
---|
| 484 | #endif
|
---|
| 485 | #if _MAX_SS == _MIN_SS
|
---|
| 486 | #define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
|
---|
| 487 | #else
|
---|
| 488 | #define SS(fs) ((fs)->ssize) /* Variable sector size */
|
---|
| 489 | #endif
|
---|
| 490 |
|
---|
| 491 |
|
---|
| 492 | /* Timestamp */
|
---|
| 493 | #if _FS_NORTC == 1
|
---|
| 494 | #if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
|
---|
| 495 | #error Invalid _FS_NORTC settings
|
---|
| 496 | #endif
|
---|
| 497 | #define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
|
---|
| 498 | #else
|
---|
| 499 | #define GET_FATTIME() get_fattime()
|
---|
| 500 | #endif
|
---|
| 501 |
|
---|
| 502 |
|
---|
| 503 | /* File lock controls */
|
---|
| 504 | #if _FS_LOCK != 0
|
---|
| 505 | #if _FS_READONLY
|
---|
| 506 | #error _FS_LOCK must be 0 at read-only configuration
|
---|
| 507 | #endif
|
---|
| 508 | typedef struct {
|
---|
| 509 | FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */
|
---|
| 510 | DWORD clu; /* Object ID 2, containing directory (0:root) */
|
---|
| 511 | DWORD ofs; /* Object ID 3, offset in the directory */
|
---|
| 512 | WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
|
---|
| 513 | } FILESEM;
|
---|
| 514 | #endif
|
---|
| 515 |
|
---|
| 516 |
|
---|
| 517 |
|
---|
| 518 |
|
---|
| 519 |
|
---|
| 520 | /*--------------------------------------------------------------------------
|
---|
| 521 |
|
---|
| 522 | Module Private Work Area
|
---|
| 523 |
|
---|
| 524 | ---------------------------------------------------------------------------*/
|
---|
| 525 |
|
---|
| 526 | /* Remark: Variables defined here without initial value shall be guaranteed
|
---|
| 527 | / zero/null at start-up. If not, the linker option or start-up routine is
|
---|
| 528 | / not compliance with C standard. */
|
---|
| 529 |
|
---|
| 530 | #if _VOLUMES < 1 || _VOLUMES > 10
|
---|
| 531 | #error Wrong _VOLUMES setting
|
---|
| 532 | #endif
|
---|
| 533 | static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
|
---|
| 534 | static WORD Fsid; /* File system mount ID */
|
---|
| 535 |
|
---|
| 536 | #if _FS_RPATH != 0 && _VOLUMES >= 2
|
---|
| 537 | static BYTE CurrVol; /* Current drive */
|
---|
| 538 | #endif
|
---|
| 539 |
|
---|
| 540 | #if _FS_LOCK != 0
|
---|
| 541 | static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
|
---|
| 542 | #endif
|
---|
| 543 |
|
---|
| 544 | #if _USE_LFN == 0 /* Non-LFN configuration */
|
---|
| 545 | #define DEF_NAMBUF
|
---|
| 546 | #define INIT_NAMBUF(fs)
|
---|
| 547 | #define FREE_NAMBUF()
|
---|
| 548 |
|
---|
| 549 | #else /* LFN configuration */
|
---|
| 550 | #if _MAX_LFN < 12 || _MAX_LFN > 255
|
---|
| 551 | #error Wrong _MAX_LFN value
|
---|
| 552 | #endif
|
---|
| 553 | #define MAXDIRB(nc) ((nc + 44U) / 15 * SZDIRE)
|
---|
| 554 |
|
---|
| 555 | #if _USE_LFN == 1 /* LFN enabled with static working buffer */
|
---|
| 556 | #if _FS_EXFAT
|
---|
| 557 | static BYTE DirBuf[MAXDIRB(_MAX_LFN)]; /* Directory entry block scratchpad buffer */
|
---|
| 558 | #endif
|
---|
| 559 | static WCHAR LfnBuf[_MAX_LFN + 1]; /* LFN enabled with static working buffer */
|
---|
| 560 | #define DEF_NAMBUF
|
---|
| 561 | #define INIT_NAMBUF(fs)
|
---|
| 562 | #define FREE_NAMBUF()
|
---|
| 563 |
|
---|
| 564 | #elif _USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */
|
---|
| 565 | #if _FS_EXFAT
|
---|
| 566 | #define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[MAXDIRB(_MAX_LFN)];
|
---|
| 567 | #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }
|
---|
| 568 | #define FREE_NAMBUF()
|
---|
| 569 | #else
|
---|
| 570 | #define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1];
|
---|
| 571 | #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; }
|
---|
| 572 | #define FREE_NAMBUF()
|
---|
| 573 | #endif
|
---|
| 574 |
|
---|
| 575 | #elif _USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */
|
---|
| 576 | #if _FS_EXFAT
|
---|
| 577 | #define DEF_NAMBUF WCHAR *lfn;
|
---|
| 578 | #define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2 + MAXDIRB(_MAX_LFN)); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); }
|
---|
| 579 | #define FREE_NAMBUF() ff_memfree(lfn)
|
---|
| 580 | #else
|
---|
| 581 | #define DEF_NAMBUF WCHAR *lfn;
|
---|
| 582 | #define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }
|
---|
| 583 | #define FREE_NAMBUF() ff_memfree(lfn)
|
---|
| 584 | #endif
|
---|
| 585 |
|
---|
| 586 | #else
|
---|
| 587 | #error Wrong _USE_LFN setting
|
---|
| 588 |
|
---|
| 589 | #endif
|
---|
| 590 | #endif /* else _USE_LFN == 0 */
|
---|
| 591 |
|
---|
| 592 | #ifdef _EXCVT
|
---|
| 593 | static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
|
---|
| 594 | #endif
|
---|
| 595 |
|
---|
| 596 |
|
---|
| 597 |
|
---|
| 598 |
|
---|
| 599 |
|
---|
| 600 |
|
---|
| 601 | /*--------------------------------------------------------------------------
|
---|
| 602 |
|
---|
| 603 | Module Private Functions
|
---|
| 604 |
|
---|
| 605 | ---------------------------------------------------------------------------*/
|
---|
| 606 |
|
---|
| 607 |
|
---|
| 608 | /*-----------------------------------------------------------------------*/
|
---|
| 609 | /* Load/Store multi-byte word in the FAT structure */
|
---|
| 610 | /*-----------------------------------------------------------------------*/
|
---|
| 611 |
|
---|
| 612 | static
|
---|
| 613 | WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */
|
---|
| 614 | {
|
---|
| 615 | WORD rv;
|
---|
| 616 |
|
---|
| 617 | rv = ptr[1];
|
---|
| 618 | rv = rv << 8 | ptr[0];
|
---|
| 619 | return rv;
|
---|
| 620 | }
|
---|
| 621 |
|
---|
| 622 | static
|
---|
| 623 | DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */
|
---|
| 624 | {
|
---|
| 625 | DWORD rv;
|
---|
| 626 |
|
---|
| 627 | rv = ptr[3];
|
---|
| 628 | rv = rv << 8 | ptr[2];
|
---|
| 629 | rv = rv << 8 | ptr[1];
|
---|
| 630 | rv = rv << 8 | ptr[0];
|
---|
| 631 | return rv;
|
---|
| 632 | }
|
---|
| 633 |
|
---|
| 634 | #if _FS_EXFAT
|
---|
| 635 | static
|
---|
| 636 | QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */
|
---|
| 637 | {
|
---|
| 638 | QWORD rv;
|
---|
| 639 |
|
---|
| 640 | rv = ptr[7];
|
---|
| 641 | rv = rv << 8 | ptr[6];
|
---|
| 642 | rv = rv << 8 | ptr[5];
|
---|
| 643 | rv = rv << 8 | ptr[4];
|
---|
| 644 | rv = rv << 8 | ptr[3];
|
---|
| 645 | rv = rv << 8 | ptr[2];
|
---|
| 646 | rv = rv << 8 | ptr[1];
|
---|
| 647 | rv = rv << 8 | ptr[0];
|
---|
| 648 | return rv;
|
---|
| 649 | }
|
---|
| 650 | #endif
|
---|
| 651 |
|
---|
| 652 | #if !_FS_READONLY
|
---|
| 653 | static
|
---|
| 654 | void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */
|
---|
| 655 | {
|
---|
| 656 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 657 | *ptr++ = (BYTE)val;
|
---|
| 658 | }
|
---|
| 659 |
|
---|
| 660 | static
|
---|
| 661 | void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */
|
---|
| 662 | {
|
---|
| 663 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 664 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 665 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 666 | *ptr++ = (BYTE)val;
|
---|
| 667 | }
|
---|
| 668 |
|
---|
| 669 | #if _FS_EXFAT
|
---|
| 670 | static
|
---|
| 671 | void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */
|
---|
| 672 | {
|
---|
| 673 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 674 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 675 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 676 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 677 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 678 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 679 | *ptr++ = (BYTE)val; val >>= 8;
|
---|
| 680 | *ptr++ = (BYTE)val;
|
---|
| 681 | }
|
---|
| 682 | #endif
|
---|
| 683 | #endif /* !_FS_READONLY */
|
---|
| 684 |
|
---|
| 685 |
|
---|
| 686 |
|
---|
| 687 | /*-----------------------------------------------------------------------*/
|
---|
| 688 | /* String functions */
|
---|
| 689 | /*-----------------------------------------------------------------------*/
|
---|
| 690 |
|
---|
| 691 | /* Copy memory to memory */
|
---|
| 692 | static
|
---|
| 693 | void mem_cpy (void* dst, const void* src, UINT cnt) {
|
---|
| 694 | BYTE *d = (BYTE*)dst;
|
---|
| 695 | const BYTE *s = (const BYTE*)src;
|
---|
| 696 |
|
---|
| 697 | if (cnt) {
|
---|
| 698 | do {
|
---|
| 699 | *d++ = *s++;
|
---|
| 700 | } while (--cnt);
|
---|
| 701 | }
|
---|
| 702 | }
|
---|
| 703 |
|
---|
| 704 | /* Fill memory block */
|
---|
| 705 | static
|
---|
| 706 | void mem_set (void* dst, int val, UINT cnt) {
|
---|
| 707 | BYTE *d = (BYTE*)dst;
|
---|
| 708 |
|
---|
| 709 | do {
|
---|
| 710 | *d++ = (BYTE)val;
|
---|
| 711 | } while (--cnt);
|
---|
| 712 | }
|
---|
| 713 |
|
---|
| 714 | /* Compare memory block */
|
---|
| 715 | static
|
---|
| 716 | int mem_cmp (const void* dst, const void* src, UINT cnt) { /* ZR:same, NZ:different */
|
---|
| 717 | const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
|
---|
| 718 | int r = 0;
|
---|
| 719 |
|
---|
| 720 | do {
|
---|
| 721 | r = *d++ - *s++;
|
---|
| 722 | } while (--cnt && r == 0);
|
---|
| 723 |
|
---|
| 724 | return r;
|
---|
| 725 | }
|
---|
| 726 |
|
---|
| 727 | /* Check if chr is contained in the string */
|
---|
| 728 | static
|
---|
| 729 | int chk_chr (const char* str, int chr) { /* NZ:contained, ZR:not contained */
|
---|
| 730 | while (*str && *str != chr) str++;
|
---|
| 731 | return *str;
|
---|
| 732 | }
|
---|
| 733 |
|
---|
| 734 |
|
---|
| 735 |
|
---|
| 736 |
|
---|
| 737 | #if _FS_REENTRANT
|
---|
| 738 | /*-----------------------------------------------------------------------*/
|
---|
| 739 | /* Request/Release grant to access the volume */
|
---|
| 740 | /*-----------------------------------------------------------------------*/
|
---|
| 741 | static
|
---|
| 742 | int lock_fs (
|
---|
| 743 | FATFS* fs /* File system object */
|
---|
| 744 | )
|
---|
| 745 | {
|
---|
| 746 | return (fs && ff_req_grant(fs->sobj)) ? 1 : 0;
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 |
|
---|
| 750 | static
|
---|
| 751 | void unlock_fs (
|
---|
| 752 | FATFS* fs, /* File system object */
|
---|
| 753 | FRESULT res /* Result code to be returned */
|
---|
| 754 | )
|
---|
| 755 | {
|
---|
| 756 | if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {
|
---|
| 757 | ff_rel_grant(fs->sobj);
|
---|
| 758 | }
|
---|
| 759 | }
|
---|
| 760 |
|
---|
| 761 | #endif
|
---|
| 762 |
|
---|
| 763 |
|
---|
| 764 |
|
---|
| 765 | #if _FS_LOCK != 0
|
---|
| 766 | /*-----------------------------------------------------------------------*/
|
---|
| 767 | /* File lock control functions */
|
---|
| 768 | /*-----------------------------------------------------------------------*/
|
---|
| 769 |
|
---|
| 770 | static
|
---|
| 771 | FRESULT chk_lock ( /* Check if the file can be accessed */
|
---|
| 772 | DIR* dp, /* Directory object pointing the file to be checked */
|
---|
| 773 | int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
|
---|
| 774 | )
|
---|
| 775 | {
|
---|
| 776 | UINT i, be;
|
---|
| 777 |
|
---|
| 778 | /* Search file semaphore table */
|
---|
| 779 | for (i = be = 0; i < _FS_LOCK; i++) {
|
---|
| 780 | if (Files[i].fs) { /* Existing entry */
|
---|
| 781 | if (Files[i].fs == dp->obj.fs && /* Check if the object matched with an open object */
|
---|
| 782 | Files[i].clu == dp->obj.sclust &&
|
---|
| 783 | Files[i].ofs == dp->dptr) break;
|
---|
| 784 | } else { /* Blank entry */
|
---|
| 785 | be = 1;
|
---|
| 786 | }
|
---|
| 787 | }
|
---|
| 788 | if (i == _FS_LOCK) { /* The object is not opened */
|
---|
| 789 | return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */
|
---|
| 790 | }
|
---|
| 791 |
|
---|
| 792 | /* The object has been opened. Reject any open against writing file and all write mode open */
|
---|
| 793 | return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
|
---|
| 794 | }
|
---|
| 795 |
|
---|
| 796 |
|
---|
| 797 | static
|
---|
| 798 | int enq_lock (void) /* Check if an entry is available for a new object */
|
---|
| 799 | {
|
---|
| 800 | UINT i;
|
---|
| 801 |
|
---|
| 802 | for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
|
---|
| 803 | return (i == _FS_LOCK) ? 0 : 1;
|
---|
| 804 | }
|
---|
| 805 |
|
---|
| 806 |
|
---|
| 807 | static
|
---|
| 808 | UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
|
---|
| 809 | DIR* dp, /* Directory object pointing the file to register or increment */
|
---|
| 810 | int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
|
---|
| 811 | )
|
---|
| 812 | {
|
---|
| 813 | UINT i;
|
---|
| 814 |
|
---|
| 815 |
|
---|
| 816 | for (i = 0; i < _FS_LOCK; i++) { /* Find the object */
|
---|
| 817 | if (Files[i].fs == dp->obj.fs &&
|
---|
| 818 | Files[i].clu == dp->obj.sclust &&
|
---|
| 819 | Files[i].ofs == dp->dptr) break;
|
---|
| 820 | }
|
---|
| 821 |
|
---|
| 822 | if (i == _FS_LOCK) { /* Not opened. Register it as new. */
|
---|
| 823 | for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
|
---|
| 824 | if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */
|
---|
| 825 | Files[i].fs = dp->obj.fs;
|
---|
| 826 | Files[i].clu = dp->obj.sclust;
|
---|
| 827 | Files[i].ofs = dp->dptr;
|
---|
| 828 | Files[i].ctr = 0;
|
---|
| 829 | }
|
---|
| 830 |
|
---|
| 831 | if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
|
---|
| 832 |
|
---|
| 833 | Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
|
---|
| 834 |
|
---|
| 835 | return i + 1;
|
---|
| 836 | }
|
---|
| 837 |
|
---|
| 838 |
|
---|
| 839 | static
|
---|
| 840 | FRESULT dec_lock ( /* Decrement object open counter */
|
---|
| 841 | UINT i /* Semaphore index (1..) */
|
---|
| 842 | )
|
---|
| 843 | {
|
---|
| 844 | WORD n;
|
---|
| 845 | FRESULT res;
|
---|
| 846 |
|
---|
| 847 |
|
---|
| 848 | if (--i < _FS_LOCK) { /* Shift index number origin from 0 */
|
---|
| 849 | n = Files[i].ctr;
|
---|
| 850 | if (n == 0x100) n = 0; /* If write mode open, delete the entry */
|
---|
| 851 | if (n > 0) n--; /* Decrement read mode open count */
|
---|
| 852 | Files[i].ctr = n;
|
---|
| 853 | if (n == 0) Files[i].fs = 0; /* Delete the entry if open count gets zero */
|
---|
| 854 | res = FR_OK;
|
---|
| 855 | } else {
|
---|
| 856 | res = FR_INT_ERR; /* Invalid index nunber */
|
---|
| 857 | }
|
---|
| 858 | return res;
|
---|
| 859 | }
|
---|
| 860 |
|
---|
| 861 |
|
---|
| 862 | static
|
---|
| 863 | void clear_lock ( /* Clear lock entries of the volume */
|
---|
| 864 | FATFS *fs
|
---|
| 865 | )
|
---|
| 866 | {
|
---|
| 867 | UINT i;
|
---|
| 868 |
|
---|
| 869 | for (i = 0; i < _FS_LOCK; i++) {
|
---|
| 870 | if (Files[i].fs == fs) Files[i].fs = 0;
|
---|
| 871 | }
|
---|
| 872 | }
|
---|
| 873 |
|
---|
| 874 | #endif /* _FS_LOCK != 0 */
|
---|
| 875 |
|
---|
| 876 |
|
---|
| 877 |
|
---|
| 878 | /*-----------------------------------------------------------------------*/
|
---|
| 879 | /* Move/Flush disk access window in the file system object */
|
---|
| 880 | /*-----------------------------------------------------------------------*/
|
---|
| 881 | #if !_FS_READONLY
|
---|
| 882 | static
|
---|
| 883 | FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERROR */
|
---|
| 884 | FATFS* fs /* File system object */
|
---|
| 885 | )
|
---|
| 886 | {
|
---|
| 887 | DWORD wsect;
|
---|
| 888 | UINT nf;
|
---|
| 889 | FRESULT res = FR_OK;
|
---|
| 890 |
|
---|
| 891 |
|
---|
| 892 | if (fs->wflag) { /* Write back the sector if it is dirty */
|
---|
| 893 | wsect = fs->winsect; /* Current sector number */
|
---|
| 894 | if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
|
---|
| 895 | res = FR_DISK_ERR;
|
---|
| 896 | } else {
|
---|
| 897 | fs->wflag = 0;
|
---|
| 898 | if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */
|
---|
| 899 | for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */
|
---|
| 900 | wsect += fs->fsize;
|
---|
| 901 | disk_write(fs->drv, fs->win, wsect, 1);
|
---|
| 902 | }
|
---|
| 903 | }
|
---|
| 904 | }
|
---|
| 905 | }
|
---|
| 906 | return res;
|
---|
| 907 | }
|
---|
| 908 | #endif
|
---|
| 909 |
|
---|
| 910 |
|
---|
| 911 | static
|
---|
| 912 | FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERROR */
|
---|
| 913 | FATFS* fs, /* File system object */
|
---|
| 914 | DWORD sector /* Sector number to make appearance in the fs->win[] */
|
---|
| 915 | )
|
---|
| 916 | {
|
---|
| 917 | FRESULT res = FR_OK;
|
---|
| 918 |
|
---|
| 919 |
|
---|
| 920 | if (sector != fs->winsect) { /* Window offset changed? */
|
---|
| 921 | #if !_FS_READONLY
|
---|
| 922 | res = sync_window(fs); /* Write-back changes */
|
---|
| 923 | #endif
|
---|
| 924 | if (res == FR_OK) { /* Fill sector window with new data */
|
---|
| 925 | if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
|
---|
| 926 | sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */
|
---|
| 927 | res = FR_DISK_ERR;
|
---|
| 928 | }
|
---|
| 929 | fs->winsect = sector;
|
---|
| 930 | }
|
---|
| 931 | }
|
---|
| 932 | return res;
|
---|
| 933 | }
|
---|
| 934 |
|
---|
| 935 |
|
---|
| 936 |
|
---|
| 937 |
|
---|
| 938 | #if !_FS_READONLY
|
---|
| 939 | /*-----------------------------------------------------------------------*/
|
---|
| 940 | /* Synchronize file system and strage device */
|
---|
| 941 | /*-----------------------------------------------------------------------*/
|
---|
| 942 |
|
---|
| 943 | static
|
---|
| 944 | FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */
|
---|
| 945 | FATFS* fs /* File system object */
|
---|
| 946 | )
|
---|
| 947 | {
|
---|
| 948 | FRESULT res;
|
---|
| 949 |
|
---|
| 950 |
|
---|
| 951 | res = sync_window(fs);
|
---|
| 952 | if (res == FR_OK) {
|
---|
| 953 | /* Update FSInfo sector if needed */
|
---|
| 954 | if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
|
---|
| 955 | /* Create FSInfo structure */
|
---|
| 956 | mem_set(fs->win, 0, SS(fs));
|
---|
| 957 | st_word(fs->win + BS_55AA, 0xAA55);
|
---|
| 958 | st_dword(fs->win + FSI_LeadSig, 0x41615252);
|
---|
| 959 | st_dword(fs->win + FSI_StrucSig, 0x61417272);
|
---|
| 960 | st_dword(fs->win + FSI_Free_Count, fs->free_clst);
|
---|
| 961 | st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);
|
---|
| 962 | /* Write it into the FSInfo sector */
|
---|
| 963 | fs->winsect = fs->volbase + 1;
|
---|
| 964 | disk_write(fs->drv, fs->win, fs->winsect, 1);
|
---|
| 965 | fs->fsi_flag = 0;
|
---|
| 966 | }
|
---|
| 967 | /* Make sure that no pending write process in the physical drive */
|
---|
| 968 | if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;
|
---|
| 969 | }
|
---|
| 970 |
|
---|
| 971 | return res;
|
---|
| 972 | }
|
---|
| 973 |
|
---|
| 974 | #endif
|
---|
| 975 |
|
---|
| 976 |
|
---|
| 977 |
|
---|
| 978 | /*-----------------------------------------------------------------------*/
|
---|
| 979 | /* Get sector# from cluster# */
|
---|
| 980 | /*-----------------------------------------------------------------------*/
|
---|
| 981 |
|
---|
| 982 | static
|
---|
| 983 | DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
|
---|
| 984 | FATFS* fs, /* File system object */
|
---|
| 985 | DWORD clst /* Cluster# to be converted */
|
---|
| 986 | )
|
---|
| 987 | {
|
---|
| 988 | clst -= 2;
|
---|
| 989 | if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */
|
---|
| 990 | return clst * fs->csize + fs->database;
|
---|
| 991 | }
|
---|
| 992 |
|
---|
| 993 |
|
---|
| 994 |
|
---|
| 995 |
|
---|
| 996 | /*-----------------------------------------------------------------------*/
|
---|
| 997 | /* FAT access - Read value of a FAT entry */
|
---|
| 998 | /*-----------------------------------------------------------------------*/
|
---|
| 999 |
|
---|
| 1000 | static
|
---|
| 1001 | DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */
|
---|
| 1002 | _FDID* obj, /* Corresponding object */
|
---|
| 1003 | DWORD clst /* Cluster number to get the value */
|
---|
| 1004 | )
|
---|
| 1005 | {
|
---|
| 1006 | UINT wc, bc;
|
---|
| 1007 | DWORD val;
|
---|
| 1008 | FATFS *fs = obj->fs;
|
---|
| 1009 |
|
---|
| 1010 |
|
---|
| 1011 | if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
|
---|
| 1012 | val = 1; /* Internal error */
|
---|
| 1013 |
|
---|
| 1014 | } else {
|
---|
| 1015 | val = 0xFFFFFFFF; /* Default value falls on disk error */
|
---|
| 1016 |
|
---|
| 1017 | switch (fs->fs_type) {
|
---|
| 1018 | case FS_FAT12 :
|
---|
| 1019 | bc = (UINT)clst; bc += bc / 2;
|
---|
| 1020 | if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
|
---|
| 1021 | wc = fs->win[bc++ % SS(fs)];
|
---|
| 1022 | if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
|
---|
| 1023 | wc |= fs->win[bc % SS(fs)] << 8;
|
---|
| 1024 | val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
|
---|
| 1025 | break;
|
---|
| 1026 |
|
---|
| 1027 | case FS_FAT16 :
|
---|
| 1028 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
|
---|
| 1029 | val = ld_word(fs->win + clst * 2 % SS(fs));
|
---|
| 1030 | break;
|
---|
| 1031 |
|
---|
| 1032 | case FS_FAT32 :
|
---|
| 1033 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
|
---|
| 1034 | val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;
|
---|
| 1035 | break;
|
---|
| 1036 | #if _FS_EXFAT
|
---|
| 1037 | case FS_EXFAT :
|
---|
| 1038 | if (obj->objsize) {
|
---|
| 1039 | DWORD cofs = clst - obj->sclust; /* Offset from start cluster */
|
---|
| 1040 | DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize; /* Number of clusters - 1 */
|
---|
| 1041 |
|
---|
| 1042 | if (obj->stat == 2) { /* Is there no valid chain on the FAT? */
|
---|
| 1043 | if (cofs <= clen) {
|
---|
| 1044 | val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* Generate the value */
|
---|
| 1045 | break;
|
---|
| 1046 | }
|
---|
| 1047 | }
|
---|
| 1048 | if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the 1st fragment? */
|
---|
| 1049 | val = clst + 1; /* Generate the value */
|
---|
| 1050 | break;
|
---|
| 1051 | }
|
---|
| 1052 | if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */
|
---|
| 1053 | if (obj->n_frag != 0) { /* Is it on the growing edge? */
|
---|
| 1054 | val = 0x7FFFFFFF; /* Generate EOC */
|
---|
| 1055 | } else {
|
---|
| 1056 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
|
---|
| 1057 | val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;
|
---|
| 1058 | }
|
---|
| 1059 | break;
|
---|
| 1060 | }
|
---|
| 1061 | }
|
---|
| 1062 | /* go to default */
|
---|
| 1063 | #endif
|
---|
| 1064 | default:
|
---|
| 1065 | val = 1; /* Internal error */
|
---|
| 1066 | }
|
---|
| 1067 | }
|
---|
| 1068 |
|
---|
| 1069 | return val;
|
---|
| 1070 | }
|
---|
| 1071 |
|
---|
| 1072 |
|
---|
| 1073 |
|
---|
| 1074 |
|
---|
| 1075 | #if !_FS_READONLY
|
---|
| 1076 | /*-----------------------------------------------------------------------*/
|
---|
| 1077 | /* FAT access - Change value of a FAT entry */
|
---|
| 1078 | /*-----------------------------------------------------------------------*/
|
---|
| 1079 |
|
---|
| 1080 | static
|
---|
| 1081 | FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
|
---|
| 1082 | FATFS* fs, /* Corresponding file system object */
|
---|
| 1083 | DWORD clst, /* FAT index number (cluster number) to be changed */
|
---|
| 1084 | DWORD val /* New value to be set to the entry */
|
---|
| 1085 | )
|
---|
| 1086 | {
|
---|
| 1087 | UINT bc;
|
---|
| 1088 | BYTE *p;
|
---|
| 1089 | FRESULT res = FR_INT_ERR;
|
---|
| 1090 |
|
---|
| 1091 | if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */
|
---|
| 1092 | switch (fs->fs_type) {
|
---|
| 1093 | case FS_FAT12 : /* Bitfield items */
|
---|
| 1094 | bc = (UINT)clst; bc += bc / 2;
|
---|
| 1095 | res = move_window(fs, fs->fatbase + (bc / SS(fs)));
|
---|
| 1096 | if (res != FR_OK) break;
|
---|
| 1097 | p = fs->win + bc++ % SS(fs);
|
---|
| 1098 | *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
|
---|
| 1099 | fs->wflag = 1;
|
---|
| 1100 | res = move_window(fs, fs->fatbase + (bc / SS(fs)));
|
---|
| 1101 | if (res != FR_OK) break;
|
---|
| 1102 | p = fs->win + bc % SS(fs);
|
---|
| 1103 | *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
|
---|
| 1104 | fs->wflag = 1;
|
---|
| 1105 | break;
|
---|
| 1106 |
|
---|
| 1107 | case FS_FAT16 : /* WORD aligned items */
|
---|
| 1108 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
|
---|
| 1109 | if (res != FR_OK) break;
|
---|
| 1110 | st_word(fs->win + clst * 2 % SS(fs), (WORD)val);
|
---|
| 1111 | fs->wflag = 1;
|
---|
| 1112 | break;
|
---|
| 1113 |
|
---|
| 1114 | case FS_FAT32 : /* DWORD aligned items */
|
---|
| 1115 | #if _FS_EXFAT
|
---|
| 1116 | case FS_EXFAT :
|
---|
| 1117 | #endif
|
---|
| 1118 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
|
---|
| 1119 | if (res != FR_OK) break;
|
---|
| 1120 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
|
---|
| 1121 | val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);
|
---|
| 1122 | }
|
---|
| 1123 | st_dword(fs->win + clst * 4 % SS(fs), val);
|
---|
| 1124 | fs->wflag = 1;
|
---|
| 1125 | break;
|
---|
| 1126 | }
|
---|
| 1127 | }
|
---|
| 1128 | return res;
|
---|
| 1129 | }
|
---|
| 1130 |
|
---|
| 1131 | #endif /* !_FS_READONLY */
|
---|
| 1132 |
|
---|
| 1133 |
|
---|
| 1134 |
|
---|
| 1135 |
|
---|
| 1136 | #if _FS_EXFAT && !_FS_READONLY
|
---|
| 1137 | /*-----------------------------------------------------------------------*/
|
---|
| 1138 | /* exFAT: Accessing FAT and Allocation Bitmap */
|
---|
| 1139 | /*-----------------------------------------------------------------------*/
|
---|
| 1140 |
|
---|
| 1141 | /*--------------------------------------*/
|
---|
| 1142 | /* Find a contiguous free cluster block */
|
---|
| 1143 | /*--------------------------------------*/
|
---|
| 1144 |
|
---|
| 1145 | static
|
---|
| 1146 | DWORD find_bitmap ( /* 0:Not found, 2..:Cluster block found, 0xFFFFFFFF:Disk error */
|
---|
| 1147 | FATFS* fs, /* File system object */
|
---|
| 1148 | DWORD clst, /* Cluster number to scan from */
|
---|
| 1149 | DWORD ncl /* Number of contiguous clusters to find (1..) */
|
---|
| 1150 | )
|
---|
| 1151 | {
|
---|
| 1152 | BYTE bm, bv;
|
---|
| 1153 | UINT i;
|
---|
| 1154 | DWORD val, scl, ctr;
|
---|
| 1155 |
|
---|
| 1156 |
|
---|
| 1157 | clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */
|
---|
| 1158 | if (clst >= fs->n_fatent - 2) clst = 0;
|
---|
| 1159 | scl = val = clst; ctr = 0;
|
---|
| 1160 | for (;;) {
|
---|
| 1161 | if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF; /* (assuming bitmap is located top of the cluster heap) */
|
---|
| 1162 | i = val / 8 % SS(fs); bm = 1 << (val % 8);
|
---|
| 1163 | do {
|
---|
| 1164 | do {
|
---|
| 1165 | bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */
|
---|
| 1166 | if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */
|
---|
| 1167 | val = 0; bm = 0; i = SS(fs);
|
---|
| 1168 | }
|
---|
| 1169 | if (!bv) { /* Is it a free cluster? */
|
---|
| 1170 | if (++ctr == ncl) return scl + 2; /* Check if run length is sufficient for required */
|
---|
| 1171 | } else {
|
---|
| 1172 | scl = val; ctr = 0; /* Encountered a cluster in-use, restart to scan */
|
---|
| 1173 | }
|
---|
| 1174 | if (val == clst) return 0; /* All cluster scanned? */
|
---|
| 1175 | } while (bm);
|
---|
| 1176 | bm = 1;
|
---|
| 1177 | } while (++i < SS(fs));
|
---|
| 1178 | }
|
---|
| 1179 | }
|
---|
| 1180 |
|
---|
| 1181 |
|
---|
| 1182 | /*----------------------------------------*/
|
---|
| 1183 | /* Set/Clear a block of allocation bitmap */
|
---|
| 1184 | /*----------------------------------------*/
|
---|
| 1185 |
|
---|
| 1186 | static
|
---|
| 1187 | FRESULT change_bitmap (
|
---|
| 1188 | FATFS* fs, /* File system object */
|
---|
| 1189 | DWORD clst, /* Cluster number to change from */
|
---|
| 1190 | DWORD ncl, /* Number of clusters to be changed */
|
---|
| 1191 | int bv /* bit value to be set (0 or 1) */
|
---|
| 1192 | )
|
---|
| 1193 | {
|
---|
| 1194 | BYTE bm;
|
---|
| 1195 | UINT i;
|
---|
| 1196 | DWORD sect;
|
---|
| 1197 |
|
---|
| 1198 | clst -= 2; /* The first bit corresponds to cluster #2 */
|
---|
| 1199 | sect = fs->database + clst / 8 / SS(fs); /* Sector address (assuming bitmap is located top of the cluster heap) */
|
---|
| 1200 | i = clst / 8 % SS(fs); /* Byte offset in the sector */
|
---|
| 1201 | bm = 1 << (clst % 8); /* Bit mask in the byte */
|
---|
| 1202 | for (;;) {
|
---|
| 1203 | if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;
|
---|
| 1204 | do {
|
---|
| 1205 | do {
|
---|
| 1206 | if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */
|
---|
| 1207 | fs->win[i] ^= bm; /* Flip the bit */
|
---|
| 1208 | fs->wflag = 1;
|
---|
| 1209 | if (--ncl == 0) return FR_OK; /* All bits processed? */
|
---|
| 1210 | } while (bm <<= 1); /* Next bit */
|
---|
| 1211 | bm = 1;
|
---|
| 1212 | } while (++i < SS(fs)); /* Next byte */
|
---|
| 1213 | i = 0;
|
---|
| 1214 | }
|
---|
| 1215 | }
|
---|
| 1216 |
|
---|
| 1217 |
|
---|
| 1218 | /*---------------------------------------------*/
|
---|
| 1219 | /* Fill the first fragment of the FAT chain */
|
---|
| 1220 | /*---------------------------------------------*/
|
---|
| 1221 |
|
---|
| 1222 | static
|
---|
| 1223 | FRESULT fill_first_frag (
|
---|
| 1224 | _FDID* obj /* Pointer to the corresponding object */
|
---|
| 1225 | )
|
---|
| 1226 | {
|
---|
| 1227 | FRESULT res;
|
---|
| 1228 | DWORD cl, n;
|
---|
| 1229 |
|
---|
| 1230 | if (obj->stat == 3) { /* Has the object been changed 'fragmented'? */
|
---|
| 1231 | for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */
|
---|
| 1232 | res = put_fat(obj->fs, cl, cl + 1);
|
---|
| 1233 | if (res != FR_OK) return res;
|
---|
| 1234 | }
|
---|
| 1235 | obj->stat = 0; /* Change status 'FAT chain is valid' */
|
---|
| 1236 | }
|
---|
| 1237 | return FR_OK;
|
---|
| 1238 | }
|
---|
| 1239 |
|
---|
| 1240 |
|
---|
| 1241 | /*---------------------------------------------*/
|
---|
| 1242 | /* Fill the last fragment of the FAT chain */
|
---|
| 1243 | /*---------------------------------------------*/
|
---|
| 1244 |
|
---|
| 1245 | static
|
---|
| 1246 | FRESULT fill_last_frag (
|
---|
| 1247 | _FDID* obj, /* Pointer to the corresponding object */
|
---|
| 1248 | DWORD lcl, /* Last cluster of the fragment */
|
---|
| 1249 | DWORD term /* Value to set the last FAT entry */
|
---|
| 1250 | )
|
---|
| 1251 | {
|
---|
| 1252 | FRESULT res;
|
---|
| 1253 |
|
---|
| 1254 | while (obj->n_frag > 0) { /* Create the last chain on the FAT */
|
---|
| 1255 | res = put_fat(obj->fs, lcl - obj->n_frag + 1, (obj->n_frag > 1) ? lcl - obj->n_frag + 2 : term);
|
---|
| 1256 | if (res != FR_OK) return res;
|
---|
| 1257 | obj->n_frag--;
|
---|
| 1258 | }
|
---|
| 1259 | return FR_OK;
|
---|
| 1260 | }
|
---|
| 1261 |
|
---|
| 1262 | #endif /* _FS_EXFAT && !_FS_READONLY */
|
---|
| 1263 |
|
---|
| 1264 |
|
---|
| 1265 |
|
---|
| 1266 | #if !_FS_READONLY
|
---|
| 1267 | /*-----------------------------------------------------------------------*/
|
---|
| 1268 | /* FAT handling - Remove a cluster chain */
|
---|
| 1269 | /*-----------------------------------------------------------------------*/
|
---|
| 1270 | static
|
---|
| 1271 | FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
|
---|
| 1272 | _FDID* obj, /* Corresponding object */
|
---|
| 1273 | DWORD clst, /* Cluster to remove a chain from */
|
---|
| 1274 | DWORD pclst /* Previous cluster of clst (0:an entire chain) */
|
---|
| 1275 | )
|
---|
| 1276 | {
|
---|
| 1277 | FRESULT res = FR_OK;
|
---|
| 1278 | DWORD nxt;
|
---|
| 1279 | FATFS *fs = obj->fs;
|
---|
| 1280 | #if _FS_EXFAT || _USE_TRIM
|
---|
| 1281 | DWORD scl = clst, ecl = clst;
|
---|
| 1282 | #endif
|
---|
| 1283 | #if _USE_TRIM
|
---|
| 1284 | DWORD rt[2];
|
---|
| 1285 | #endif
|
---|
| 1286 |
|
---|
| 1287 | if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */
|
---|
| 1288 |
|
---|
| 1289 | /* Mark the previous cluster 'EOC' on the FAT if it exists */
|
---|
| 1290 | if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {
|
---|
| 1291 | res = put_fat(fs, pclst, 0xFFFFFFFF);
|
---|
| 1292 | if (res != FR_OK) return res;
|
---|
| 1293 | }
|
---|
| 1294 |
|
---|
| 1295 | /* Remove the chain */
|
---|
| 1296 | do {
|
---|
| 1297 | nxt = get_fat(obj, clst); /* Get cluster status */
|
---|
| 1298 | if (nxt == 0) break; /* Empty cluster? */
|
---|
| 1299 | if (nxt == 1) return FR_INT_ERR; /* Internal error? */
|
---|
| 1300 | if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */
|
---|
| 1301 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
|
---|
| 1302 | res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */
|
---|
| 1303 | if (res != FR_OK) return res;
|
---|
| 1304 | }
|
---|
| 1305 | if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
|
---|
| 1306 | fs->free_clst++;
|
---|
| 1307 | fs->fsi_flag |= 1;
|
---|
| 1308 | }
|
---|
| 1309 | #if _FS_EXFAT || _USE_TRIM
|
---|
| 1310 | if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
|
---|
| 1311 | ecl = nxt;
|
---|
| 1312 | } else { /* End of contiguous cluster block */
|
---|
| 1313 | #if _FS_EXFAT
|
---|
| 1314 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 1315 | res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */
|
---|
| 1316 | if (res != FR_OK) return res;
|
---|
| 1317 | }
|
---|
| 1318 | #endif
|
---|
| 1319 | #if _USE_TRIM
|
---|
| 1320 | rt[0] = clust2sect(fs, scl); /* Start sector */
|
---|
| 1321 | rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
|
---|
| 1322 | disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Inform device the block can be erased */
|
---|
| 1323 | #endif
|
---|
| 1324 | scl = ecl = nxt;
|
---|
| 1325 | }
|
---|
| 1326 | #endif
|
---|
| 1327 | clst = nxt; /* Next cluster */
|
---|
| 1328 | } while (clst < fs->n_fatent); /* Repeat while not the last link */
|
---|
| 1329 |
|
---|
| 1330 | #if _FS_EXFAT
|
---|
| 1331 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 1332 | if (pclst == 0) { /* Does the object have no chain? */
|
---|
| 1333 | obj->stat = 0; /* Change the object status 'initial' */
|
---|
| 1334 | } else {
|
---|
| 1335 | if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Did the chain get contiguous? */
|
---|
| 1336 | obj->stat = 2; /* Change the object status 'contiguous' */
|
---|
| 1337 | }
|
---|
| 1338 | }
|
---|
| 1339 | }
|
---|
| 1340 | #endif
|
---|
| 1341 | return FR_OK;
|
---|
| 1342 | }
|
---|
| 1343 |
|
---|
| 1344 |
|
---|
| 1345 |
|
---|
| 1346 |
|
---|
| 1347 | /*-----------------------------------------------------------------------*/
|
---|
| 1348 | /* FAT handling - Stretch a chain or Create a new chain */
|
---|
| 1349 | /*-----------------------------------------------------------------------*/
|
---|
| 1350 | static
|
---|
| 1351 | DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
|
---|
| 1352 | _FDID* obj, /* Corresponding object */
|
---|
| 1353 | DWORD clst /* Cluster# to stretch, 0:Create a new chain */
|
---|
| 1354 | )
|
---|
| 1355 | {
|
---|
| 1356 | DWORD cs, ncl, scl;
|
---|
| 1357 | FRESULT res;
|
---|
| 1358 | FATFS *fs = obj->fs;
|
---|
| 1359 |
|
---|
| 1360 |
|
---|
| 1361 | if (clst == 0) { /* Create a new chain */
|
---|
| 1362 | scl = fs->last_clst; /* Get suggested cluster to start from */
|
---|
| 1363 | if (scl == 0 || scl >= fs->n_fatent) scl = 1;
|
---|
| 1364 | }
|
---|
| 1365 | else { /* Stretch current chain */
|
---|
| 1366 | cs = get_fat(obj, clst); /* Check the cluster status */
|
---|
| 1367 | if (cs < 2) return 1; /* Invalid FAT value */
|
---|
| 1368 | if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */
|
---|
| 1369 | if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
|
---|
| 1370 | scl = clst;
|
---|
| 1371 | }
|
---|
| 1372 |
|
---|
| 1373 | #if _FS_EXFAT
|
---|
| 1374 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 1375 | ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */
|
---|
| 1376 | if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */
|
---|
| 1377 | res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */
|
---|
| 1378 | if (res == FR_INT_ERR) return 1;
|
---|
| 1379 | if (res == FR_DISK_ERR) return 0xFFFFFFFF;
|
---|
| 1380 | if (clst == 0) { /* Is it a new chain? */
|
---|
| 1381 | obj->stat = 2; /* Set status 'contiguous' */
|
---|
| 1382 | } else { /* It is a stretched chain */
|
---|
| 1383 | if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */
|
---|
| 1384 | obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */
|
---|
| 1385 | obj->stat = 3; /* Change status 'just fragmented' */
|
---|
| 1386 | }
|
---|
| 1387 | }
|
---|
| 1388 | if (obj->stat != 2) { /* Is the file non-contiguous? */
|
---|
| 1389 | if (ncl == clst + 1) { /* Is the cluster next to previous one? */
|
---|
| 1390 | obj->n_frag = obj->n_frag ? obj->n_frag + 1 : 2; /* Increment size of last framgent */
|
---|
| 1391 | } else { /* New fragment */
|
---|
| 1392 | if (obj->n_frag == 0) obj->n_frag = 1;
|
---|
| 1393 | res = fill_last_frag(obj, clst, ncl); /* Fill last fragment on the FAT and link it to new one */
|
---|
| 1394 | if (res == FR_OK) obj->n_frag = 1;
|
---|
| 1395 | }
|
---|
| 1396 | }
|
---|
| 1397 | } else
|
---|
| 1398 | #endif
|
---|
| 1399 | { /* On the FAT12/16/32 volume */
|
---|
| 1400 | ncl = scl; /* Start cluster */
|
---|
| 1401 | for (;;) {
|
---|
| 1402 | ncl++; /* Next cluster */
|
---|
| 1403 | if (ncl >= fs->n_fatent) { /* Check wrap-around */
|
---|
| 1404 | ncl = 2;
|
---|
| 1405 | if (ncl > scl) return 0; /* No free cluster */
|
---|
| 1406 | }
|
---|
| 1407 | cs = get_fat(obj, ncl); /* Get the cluster status */
|
---|
| 1408 | if (cs == 0) break; /* Found a free cluster */
|
---|
| 1409 | if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* An error occurred */
|
---|
| 1410 | if (ncl == scl) return 0; /* No free cluster */
|
---|
| 1411 | }
|
---|
| 1412 | res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */
|
---|
| 1413 | if (res == FR_OK && clst != 0) {
|
---|
| 1414 | res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */
|
---|
| 1415 | }
|
---|
| 1416 | }
|
---|
| 1417 |
|
---|
| 1418 | if (res == FR_OK) { /* Update FSINFO if function succeeded. */
|
---|
| 1419 | fs->last_clst = ncl;
|
---|
| 1420 | if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--;
|
---|
| 1421 | fs->fsi_flag |= 1;
|
---|
| 1422 | } else {
|
---|
| 1423 | ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Generate error status */
|
---|
| 1424 | }
|
---|
| 1425 |
|
---|
| 1426 | return ncl; /* Return new cluster number or error status */
|
---|
| 1427 | }
|
---|
| 1428 |
|
---|
| 1429 | #endif /* !_FS_READONLY */
|
---|
| 1430 |
|
---|
| 1431 |
|
---|
| 1432 |
|
---|
| 1433 |
|
---|
| 1434 | #if _USE_FASTSEEK
|
---|
| 1435 | /*-----------------------------------------------------------------------*/
|
---|
| 1436 | /* FAT handling - Convert offset into cluster with link map table */
|
---|
| 1437 | /*-----------------------------------------------------------------------*/
|
---|
| 1438 |
|
---|
| 1439 | static
|
---|
| 1440 | DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
|
---|
| 1441 | FIL* fp, /* Pointer to the file object */
|
---|
| 1442 | FSIZE_t ofs /* File offset to be converted to cluster# */
|
---|
| 1443 | )
|
---|
| 1444 | {
|
---|
| 1445 | DWORD cl, ncl, *tbl;
|
---|
| 1446 | FATFS *fs = fp->obj.fs;
|
---|
| 1447 |
|
---|
| 1448 |
|
---|
| 1449 | tbl = fp->cltbl + 1; /* Top of CLMT */
|
---|
| 1450 | cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */
|
---|
| 1451 | for (;;) {
|
---|
| 1452 | ncl = *tbl++; /* Number of cluters in the fragment */
|
---|
| 1453 | if (ncl == 0) return 0; /* End of table? (error) */
|
---|
| 1454 | if (cl < ncl) break; /* In this fragment? */
|
---|
| 1455 | cl -= ncl; tbl++; /* Next fragment */
|
---|
| 1456 | }
|
---|
| 1457 | return cl + *tbl; /* Return the cluster number */
|
---|
| 1458 | }
|
---|
| 1459 |
|
---|
| 1460 | #endif /* _USE_FASTSEEK */
|
---|
| 1461 |
|
---|
| 1462 |
|
---|
| 1463 |
|
---|
| 1464 |
|
---|
| 1465 | /*-----------------------------------------------------------------------*/
|
---|
| 1466 | /* Directory handling - Set directory index */
|
---|
| 1467 | /*-----------------------------------------------------------------------*/
|
---|
| 1468 |
|
---|
| 1469 | static
|
---|
| 1470 | FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
|
---|
| 1471 | DIR* dp, /* Pointer to directory object */
|
---|
| 1472 | DWORD ofs /* Offset of directory table */
|
---|
| 1473 | )
|
---|
| 1474 | {
|
---|
| 1475 | DWORD csz, clst;
|
---|
| 1476 | FATFS *fs = dp->obj.fs;
|
---|
| 1477 |
|
---|
| 1478 |
|
---|
| 1479 | if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */
|
---|
| 1480 | return FR_INT_ERR;
|
---|
| 1481 | }
|
---|
| 1482 | dp->dptr = ofs; /* Set current offset */
|
---|
| 1483 | clst = dp->obj.sclust; /* Table start cluster (0:root) */
|
---|
| 1484 | if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */
|
---|
| 1485 | clst = fs->dirbase;
|
---|
| 1486 | if (_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */
|
---|
| 1487 | }
|
---|
| 1488 |
|
---|
| 1489 | if (clst == 0) { /* Static table (root-directory in FAT12/16) */
|
---|
| 1490 | if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */
|
---|
| 1491 | dp->sect = fs->dirbase;
|
---|
| 1492 |
|
---|
| 1493 | } else { /* Dynamic table (sub-directory or root-directory in FAT32+) */
|
---|
| 1494 | csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */
|
---|
| 1495 | while (ofs >= csz) { /* Follow cluster chain */
|
---|
| 1496 | clst = get_fat(&dp->obj, clst); /* Get next cluster */
|
---|
| 1497 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
|
---|
| 1498 | if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */
|
---|
| 1499 | ofs -= csz;
|
---|
| 1500 | }
|
---|
| 1501 | dp->sect = clust2sect(fs, clst);
|
---|
| 1502 | }
|
---|
| 1503 | dp->clust = clst; /* Current cluster# */
|
---|
| 1504 | if (!dp->sect) return FR_INT_ERR;
|
---|
| 1505 | dp->sect += ofs / SS(fs); /* Sector# of the directory entry */
|
---|
| 1506 | dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */
|
---|
| 1507 |
|
---|
| 1508 | return FR_OK;
|
---|
| 1509 | }
|
---|
| 1510 |
|
---|
| 1511 |
|
---|
| 1512 |
|
---|
| 1513 |
|
---|
| 1514 | /*-----------------------------------------------------------------------*/
|
---|
| 1515 | /* Directory handling - Move directory table index next */
|
---|
| 1516 | /*-----------------------------------------------------------------------*/
|
---|
| 1517 |
|
---|
| 1518 | static
|
---|
| 1519 | FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
|
---|
| 1520 | DIR* dp, /* Pointer to the directory object */
|
---|
| 1521 | int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
|
---|
| 1522 | )
|
---|
| 1523 | {
|
---|
| 1524 | DWORD ofs, clst;
|
---|
| 1525 | FATFS *fs = dp->obj.fs;
|
---|
| 1526 | #if !_FS_READONLY
|
---|
| 1527 | UINT n;
|
---|
| 1528 | #endif
|
---|
| 1529 |
|
---|
| 1530 | ofs = dp->dptr + SZDIRE; /* Next entry */
|
---|
| 1531 | 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 */
|
---|
| 1532 |
|
---|
| 1533 | if (ofs % SS(fs) == 0) { /* Sector changed? */
|
---|
| 1534 | dp->sect++; /* Next sector */
|
---|
| 1535 |
|
---|
| 1536 | if (!dp->clust) { /* Static table */
|
---|
| 1537 | if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */
|
---|
| 1538 | dp->sect = 0; return FR_NO_FILE;
|
---|
| 1539 | }
|
---|
| 1540 | }
|
---|
| 1541 | else { /* Dynamic table */
|
---|
| 1542 | if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */
|
---|
| 1543 | clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */
|
---|
| 1544 | if (clst <= 1) return FR_INT_ERR; /* Internal error */
|
---|
| 1545 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
|
---|
| 1546 | if (clst >= fs->n_fatent) { /* Reached end of dynamic table */
|
---|
| 1547 | #if !_FS_READONLY
|
---|
| 1548 | if (!stretch) { /* If no stretch, report EOT */
|
---|
| 1549 | dp->sect = 0; return FR_NO_FILE;
|
---|
| 1550 | }
|
---|
| 1551 | clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */
|
---|
| 1552 | if (clst == 0) return FR_DENIED; /* No free cluster */
|
---|
| 1553 | if (clst == 1) return FR_INT_ERR; /* Internal error */
|
---|
| 1554 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
|
---|
| 1555 | /* Clean-up the stretched table */
|
---|
| 1556 | if (_FS_EXFAT) dp->obj.stat |= 4; /* The directory needs to be updated */
|
---|
| 1557 | if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */
|
---|
| 1558 | mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */
|
---|
| 1559 | for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) { /* Fill the new cluster with 0 */
|
---|
| 1560 | fs->wflag = 1;
|
---|
| 1561 | if (sync_window(fs) != FR_OK) return FR_DISK_ERR;
|
---|
| 1562 | }
|
---|
| 1563 | fs->winsect -= n; /* Restore window offset */
|
---|
| 1564 | #else
|
---|
| 1565 | if (!stretch) dp->sect = 0; /* (this line is to suppress compiler warning) */
|
---|
| 1566 | dp->sect = 0; return FR_NO_FILE; /* Report EOT */
|
---|
| 1567 | #endif
|
---|
| 1568 | }
|
---|
| 1569 | dp->clust = clst; /* Initialize data for new cluster */
|
---|
| 1570 | dp->sect = clust2sect(fs, clst);
|
---|
| 1571 | }
|
---|
| 1572 | }
|
---|
| 1573 | }
|
---|
| 1574 | dp->dptr = ofs; /* Current entry */
|
---|
| 1575 | dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */
|
---|
| 1576 |
|
---|
| 1577 | return FR_OK;
|
---|
| 1578 | }
|
---|
| 1579 |
|
---|
| 1580 |
|
---|
| 1581 |
|
---|
| 1582 |
|
---|
| 1583 | #if !_FS_READONLY
|
---|
| 1584 | /*-----------------------------------------------------------------------*/
|
---|
| 1585 | /* Directory handling - Reserve a block of directory entries */
|
---|
| 1586 | /*-----------------------------------------------------------------------*/
|
---|
| 1587 |
|
---|
| 1588 | static
|
---|
| 1589 | FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
|
---|
| 1590 | DIR* dp, /* Pointer to the directory object */
|
---|
| 1591 | UINT nent /* Number of contiguous entries to allocate */
|
---|
| 1592 | )
|
---|
| 1593 | {
|
---|
| 1594 | FRESULT res;
|
---|
| 1595 | UINT n;
|
---|
| 1596 | FATFS *fs = dp->obj.fs;
|
---|
| 1597 |
|
---|
| 1598 |
|
---|
| 1599 | res = dir_sdi(dp, 0);
|
---|
| 1600 | if (res == FR_OK) {
|
---|
| 1601 | n = 0;
|
---|
| 1602 | do {
|
---|
| 1603 | res = move_window(fs, dp->sect);
|
---|
| 1604 | if (res != FR_OK) break;
|
---|
| 1605 | #if _FS_EXFAT
|
---|
| 1606 | if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {
|
---|
| 1607 | #else
|
---|
| 1608 | if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {
|
---|
| 1609 | #endif
|
---|
| 1610 | if (++n == nent) break; /* A block of contiguous free entries is found */
|
---|
| 1611 | } else {
|
---|
| 1612 | n = 0; /* Not a blank entry. Restart to search */
|
---|
| 1613 | }
|
---|
| 1614 | res = dir_next(dp, 1);
|
---|
| 1615 | } while (res == FR_OK); /* Next entry with table stretch enabled */
|
---|
| 1616 | }
|
---|
| 1617 |
|
---|
| 1618 | if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
|
---|
| 1619 | return res;
|
---|
| 1620 | }
|
---|
| 1621 |
|
---|
| 1622 | #endif /* !_FS_READONLY */
|
---|
| 1623 |
|
---|
| 1624 |
|
---|
| 1625 |
|
---|
| 1626 |
|
---|
| 1627 | /*-----------------------------------------------------------------------*/
|
---|
| 1628 | /* FAT: Directory handling - Load/Store start cluster number */
|
---|
| 1629 | /*-----------------------------------------------------------------------*/
|
---|
| 1630 |
|
---|
| 1631 | static
|
---|
| 1632 | DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
|
---|
| 1633 | FATFS* fs, /* Pointer to the fs object */
|
---|
| 1634 | const BYTE* dir /* Pointer to the key entry */
|
---|
| 1635 | )
|
---|
| 1636 | {
|
---|
| 1637 | DWORD cl;
|
---|
| 1638 |
|
---|
| 1639 | cl = ld_word(dir + DIR_FstClusLO);
|
---|
| 1640 | if (fs->fs_type == FS_FAT32) {
|
---|
| 1641 | cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;
|
---|
| 1642 | }
|
---|
| 1643 |
|
---|
| 1644 | return cl;
|
---|
| 1645 | }
|
---|
| 1646 |
|
---|
| 1647 |
|
---|
| 1648 | #if !_FS_READONLY
|
---|
| 1649 | static
|
---|
| 1650 | void st_clust (
|
---|
| 1651 | FATFS* fs, /* Pointer to the fs object */
|
---|
| 1652 | BYTE* dir, /* Pointer to the key entry */
|
---|
| 1653 | DWORD cl /* Value to be set */
|
---|
| 1654 | )
|
---|
| 1655 | {
|
---|
| 1656 | st_word(dir + DIR_FstClusLO, (WORD)cl);
|
---|
| 1657 | if (fs->fs_type == FS_FAT32) {
|
---|
| 1658 | st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));
|
---|
| 1659 | }
|
---|
| 1660 | }
|
---|
| 1661 | #endif
|
---|
| 1662 |
|
---|
| 1663 |
|
---|
| 1664 |
|
---|
| 1665 | #if _USE_LFN != 0
|
---|
| 1666 | /*------------------------------------------------------------------------*/
|
---|
| 1667 | /* FAT-LFN: LFN handling */
|
---|
| 1668 | /*------------------------------------------------------------------------*/
|
---|
| 1669 | static
|
---|
| 1670 | const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
|
---|
| 1671 |
|
---|
| 1672 |
|
---|
| 1673 | /*--------------------------------------------------------*/
|
---|
| 1674 | /* FAT-LFN: Compare a part of file name with an LFN entry */
|
---|
| 1675 | /*--------------------------------------------------------*/
|
---|
| 1676 | static
|
---|
| 1677 | int cmp_lfn ( /* 1:matched, 0:not matched */
|
---|
| 1678 | const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
|
---|
| 1679 | BYTE* dir /* Pointer to the directory entry containing the part of LFN */
|
---|
| 1680 | )
|
---|
| 1681 | {
|
---|
| 1682 | UINT i, s;
|
---|
| 1683 | WCHAR wc, uc;
|
---|
| 1684 |
|
---|
| 1685 |
|
---|
| 1686 | if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
|
---|
| 1687 |
|
---|
| 1688 | i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
|
---|
| 1689 |
|
---|
| 1690 | for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
|
---|
| 1691 | uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
|
---|
| 1692 | if (wc) {
|
---|
| 1693 | if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */
|
---|
| 1694 | return 0; /* Not matched */
|
---|
| 1695 | }
|
---|
| 1696 | wc = uc;
|
---|
| 1697 | } else {
|
---|
| 1698 | if (uc != 0xFFFF) return 0; /* Check filler */
|
---|
| 1699 | }
|
---|
| 1700 | }
|
---|
| 1701 |
|
---|
| 1702 | if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0; /* Last segment matched but different length */
|
---|
| 1703 |
|
---|
| 1704 | return 1; /* The part of LFN matched */
|
---|
| 1705 | }
|
---|
| 1706 |
|
---|
| 1707 |
|
---|
| 1708 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
|
---|
| 1709 | /*-----------------------------------------------------*/
|
---|
| 1710 | /* FAT-LFN: Pick a part of file name from an LFN entry */
|
---|
| 1711 | /*-----------------------------------------------------*/
|
---|
| 1712 | static
|
---|
| 1713 | int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
|
---|
| 1714 | WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
|
---|
| 1715 | BYTE* dir /* Pointer to the LFN entry */
|
---|
| 1716 | )
|
---|
| 1717 | {
|
---|
| 1718 | UINT i, s;
|
---|
| 1719 | WCHAR wc, uc;
|
---|
| 1720 |
|
---|
| 1721 |
|
---|
| 1722 | if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO is 0 */
|
---|
| 1723 |
|
---|
| 1724 | i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13; /* Offset in the LFN buffer */
|
---|
| 1725 |
|
---|
| 1726 | for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
|
---|
| 1727 | uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
|
---|
| 1728 | if (wc) {
|
---|
| 1729 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
|
---|
| 1730 | lfnbuf[i++] = wc = uc; /* Store it */
|
---|
| 1731 | } else {
|
---|
| 1732 | if (uc != 0xFFFF) return 0; /* Check filler */
|
---|
| 1733 | }
|
---|
| 1734 | }
|
---|
| 1735 |
|
---|
| 1736 | if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */
|
---|
| 1737 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
|
---|
| 1738 | lfnbuf[i] = 0;
|
---|
| 1739 | }
|
---|
| 1740 |
|
---|
| 1741 | return 1; /* The part of LFN is valid */
|
---|
| 1742 | }
|
---|
| 1743 | #endif
|
---|
| 1744 |
|
---|
| 1745 |
|
---|
| 1746 | #if !_FS_READONLY
|
---|
| 1747 | /*-----------------------------------------*/
|
---|
| 1748 | /* FAT-LFN: Create an entry of LFN entries */
|
---|
| 1749 | /*-----------------------------------------*/
|
---|
| 1750 | static
|
---|
| 1751 | void put_lfn (
|
---|
| 1752 | const WCHAR* lfn, /* Pointer to the LFN */
|
---|
| 1753 | BYTE* dir, /* Pointer to the LFN entry to be created */
|
---|
| 1754 | BYTE ord, /* LFN order (1-20) */
|
---|
| 1755 | BYTE sum /* Checksum of the corresponding SFN */
|
---|
| 1756 | )
|
---|
| 1757 | {
|
---|
| 1758 | UINT i, s;
|
---|
| 1759 | WCHAR wc;
|
---|
| 1760 |
|
---|
| 1761 |
|
---|
| 1762 | dir[LDIR_Chksum] = sum; /* Set checksum */
|
---|
| 1763 | dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
|
---|
| 1764 | dir[LDIR_Type] = 0;
|
---|
| 1765 | st_word(dir + LDIR_FstClusLO, 0);
|
---|
| 1766 |
|
---|
| 1767 | i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
|
---|
| 1768 | s = wc = 0;
|
---|
| 1769 | do {
|
---|
| 1770 | if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */
|
---|
| 1771 | st_word(dir + LfnOfs[s], wc); /* Put it */
|
---|
| 1772 | if (wc == 0) wc = 0xFFFF; /* Padding characters for left locations */
|
---|
| 1773 | } while (++s < 13);
|
---|
| 1774 | if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */
|
---|
| 1775 | dir[LDIR_Ord] = ord; /* Set the LFN order */
|
---|
| 1776 | }
|
---|
| 1777 |
|
---|
| 1778 | #endif /* !_FS_READONLY */
|
---|
| 1779 | #endif /* _USE_LFN != 0 */
|
---|
| 1780 |
|
---|
| 1781 |
|
---|
| 1782 |
|
---|
| 1783 | #if _USE_LFN != 0 && !_FS_READONLY
|
---|
| 1784 | /*-----------------------------------------------------------------------*/
|
---|
| 1785 | /* FAT-LFN: Create a Numbered SFN */
|
---|
| 1786 | /*-----------------------------------------------------------------------*/
|
---|
| 1787 |
|
---|
| 1788 | static
|
---|
| 1789 | void gen_numname (
|
---|
| 1790 | BYTE* dst, /* Pointer to the buffer to store numbered SFN */
|
---|
| 1791 | const BYTE* src, /* Pointer to SFN */
|
---|
| 1792 | const WCHAR* lfn, /* Pointer to LFN */
|
---|
| 1793 | UINT seq /* Sequence number */
|
---|
| 1794 | )
|
---|
| 1795 | {
|
---|
| 1796 | BYTE ns[8], c;
|
---|
| 1797 | UINT i, j;
|
---|
| 1798 | WCHAR wc;
|
---|
| 1799 | DWORD sr;
|
---|
| 1800 |
|
---|
| 1801 |
|
---|
| 1802 | mem_cpy(dst, src, 11);
|
---|
| 1803 |
|
---|
| 1804 | if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */
|
---|
| 1805 | sr = seq;
|
---|
| 1806 | while (*lfn) { /* Create a CRC */
|
---|
| 1807 | wc = *lfn++;
|
---|
| 1808 | for (i = 0; i < 16; i++) {
|
---|
| 1809 | sr = (sr << 1) + (wc & 1);
|
---|
| 1810 | wc >>= 1;
|
---|
| 1811 | if (sr & 0x10000) sr ^= 0x11021;
|
---|
| 1812 | }
|
---|
| 1813 | }
|
---|
| 1814 | seq = (UINT)sr;
|
---|
| 1815 | }
|
---|
| 1816 |
|
---|
| 1817 | /* itoa (hexdecimal) */
|
---|
| 1818 | i = 7;
|
---|
| 1819 | do {
|
---|
| 1820 | c = (BYTE)((seq % 16) + '0');
|
---|
| 1821 | if (c > '9') c += 7;
|
---|
| 1822 | ns[i--] = c;
|
---|
| 1823 | seq /= 16;
|
---|
| 1824 | } while (seq);
|
---|
| 1825 | ns[i] = '~';
|
---|
| 1826 |
|
---|
| 1827 | /* Append the number */
|
---|
| 1828 | for (j = 0; j < i && dst[j] != ' '; j++) {
|
---|
| 1829 | if (IsDBCS1(dst[j])) {
|
---|
| 1830 | if (j == i - 1) break;
|
---|
| 1831 | j++;
|
---|
| 1832 | }
|
---|
| 1833 | }
|
---|
| 1834 | do {
|
---|
| 1835 | dst[j++] = (i < 8) ? ns[i++] : ' ';
|
---|
| 1836 | } while (j < 8);
|
---|
| 1837 | }
|
---|
| 1838 | #endif /* _USE_LFN != 0 && !_FS_READONLY */
|
---|
| 1839 |
|
---|
| 1840 |
|
---|
| 1841 |
|
---|
| 1842 | #if _USE_LFN != 0
|
---|
| 1843 | /*-----------------------------------------------------------------------*/
|
---|
| 1844 | /* FAT-LFN: Calculate checksum of an SFN entry */
|
---|
| 1845 | /*-----------------------------------------------------------------------*/
|
---|
| 1846 |
|
---|
| 1847 | static
|
---|
| 1848 | BYTE sum_sfn (
|
---|
| 1849 | const BYTE* dir /* Pointer to the SFN entry */
|
---|
| 1850 | )
|
---|
| 1851 | {
|
---|
| 1852 | BYTE sum = 0;
|
---|
| 1853 | UINT n = 11;
|
---|
| 1854 |
|
---|
| 1855 | do {
|
---|
| 1856 | sum = (sum >> 1) + (sum << 7) + *dir++;
|
---|
| 1857 | } while (--n);
|
---|
| 1858 | return sum;
|
---|
| 1859 | }
|
---|
| 1860 |
|
---|
| 1861 | #endif /* _USE_LFN != 0 */
|
---|
| 1862 |
|
---|
| 1863 |
|
---|
| 1864 |
|
---|
| 1865 | #if _FS_EXFAT
|
---|
| 1866 | /*-----------------------------------------------------------------------*/
|
---|
| 1867 | /* exFAT: Checksum */
|
---|
| 1868 | /*-----------------------------------------------------------------------*/
|
---|
| 1869 |
|
---|
| 1870 | static
|
---|
| 1871 | WORD xdir_sum ( /* Get checksum of the directoly block */
|
---|
| 1872 | const BYTE* dir /* Directory entry block to be calculated */
|
---|
| 1873 | )
|
---|
| 1874 | {
|
---|
| 1875 | UINT i, szblk;
|
---|
| 1876 | WORD sum;
|
---|
| 1877 |
|
---|
| 1878 |
|
---|
| 1879 | szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;
|
---|
| 1880 | for (i = sum = 0; i < szblk; i++) {
|
---|
| 1881 | if (i == XDIR_SetSum) { /* Skip sum field */
|
---|
| 1882 | i++;
|
---|
| 1883 | } else {
|
---|
| 1884 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];
|
---|
| 1885 | }
|
---|
| 1886 | }
|
---|
| 1887 | return sum;
|
---|
| 1888 | }
|
---|
| 1889 |
|
---|
| 1890 |
|
---|
| 1891 |
|
---|
| 1892 | static
|
---|
| 1893 | WORD xname_sum ( /* Get check sum (to be used as hash) of the name */
|
---|
| 1894 | const WCHAR* name /* File name to be calculated */
|
---|
| 1895 | )
|
---|
| 1896 | {
|
---|
| 1897 | WCHAR chr;
|
---|
| 1898 | WORD sum = 0;
|
---|
| 1899 |
|
---|
| 1900 |
|
---|
| 1901 | while ((chr = *name++) != 0) {
|
---|
| 1902 | chr = ff_wtoupper(chr); /* File name needs to be ignored case */
|
---|
| 1903 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);
|
---|
| 1904 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);
|
---|
| 1905 | }
|
---|
| 1906 | return sum;
|
---|
| 1907 | }
|
---|
| 1908 |
|
---|
| 1909 |
|
---|
| 1910 | #if !_FS_READONLY && _USE_MKFS
|
---|
| 1911 | static
|
---|
| 1912 | DWORD xsum32 (
|
---|
| 1913 | BYTE dat, /* Data to be sumed */
|
---|
| 1914 | DWORD sum /* Previous value */
|
---|
| 1915 | )
|
---|
| 1916 | {
|
---|
| 1917 | sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;
|
---|
| 1918 | return sum;
|
---|
| 1919 | }
|
---|
| 1920 | #endif
|
---|
| 1921 |
|
---|
| 1922 |
|
---|
| 1923 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
|
---|
| 1924 | /*------------------------------------------------------*/
|
---|
| 1925 | /* exFAT: Get object information from a directory block */
|
---|
| 1926 | /*------------------------------------------------------*/
|
---|
| 1927 |
|
---|
| 1928 | static
|
---|
| 1929 | void get_xdir_info (
|
---|
| 1930 | BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */
|
---|
| 1931 | FILINFO* fno /* Buffer to store the extracted file information */
|
---|
| 1932 | )
|
---|
| 1933 | {
|
---|
| 1934 | UINT di, si;
|
---|
| 1935 | WCHAR w;
|
---|
| 1936 | #if !_LFN_UNICODE
|
---|
| 1937 | UINT nc;
|
---|
| 1938 | #endif
|
---|
| 1939 |
|
---|
| 1940 | /* Get file name */
|
---|
| 1941 | di = 0;
|
---|
| 1942 | #if _LFN_UNICODE
|
---|
| 1943 | for (si = SZDIRE * 2; di < dirb[XDIR_NumName]; si += 2, di++) {
|
---|
| 1944 | if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */
|
---|
| 1945 | w = ld_word(dirb + si); /* Get a character */
|
---|
| 1946 | if (di >= _MAX_LFN) { di = 0; break; } /* Buffer overflow --> inaccessible object name */
|
---|
| 1947 | fno->fname[di] = w; /* Store it */
|
---|
| 1948 | }
|
---|
| 1949 | #else
|
---|
| 1950 | for (si = SZDIRE * 2, nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) {
|
---|
| 1951 | if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */
|
---|
| 1952 | w = ff_convert(ld_word(dirb + si), 0); /* Get a character and Unicode -> OEM */
|
---|
| 1953 | if (_DF1S && w >= 0x100) { /* Is it a double byte char? (always false at SBCS cfg) */
|
---|
| 1954 | fno->fname[di++] = (char)(w >> 8); /* Put 1st byte of the DBC */
|
---|
| 1955 | }
|
---|
| 1956 | if (w == 0 || di >= _MAX_LFN) { di = 0; break; } /* Invalid char or buffer overflow --> inaccessible object name */
|
---|
| 1957 | fno->fname[di++] = (char)w;
|
---|
| 1958 | }
|
---|
| 1959 | #endif
|
---|
| 1960 | if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object name? */
|
---|
| 1961 | fno->fname[di] = 0; /* Terminate file name */
|
---|
| 1962 |
|
---|
| 1963 | fno->altname[0] = 0; /* No SFN */
|
---|
| 1964 | fno->fattrib = dirb[XDIR_Attr]; /* Attribute */
|
---|
| 1965 | fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */
|
---|
| 1966 | fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */
|
---|
| 1967 | fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */
|
---|
| 1968 | }
|
---|
| 1969 |
|
---|
| 1970 | #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
|
---|
| 1971 |
|
---|
| 1972 |
|
---|
| 1973 | /*-----------------------------------*/
|
---|
| 1974 | /* exFAT: Get a directry entry block */
|
---|
| 1975 | /*-----------------------------------*/
|
---|
| 1976 |
|
---|
| 1977 | static
|
---|
| 1978 | FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */
|
---|
| 1979 | DIR* dp /* Pointer to the reading direcotry object pointing the 85 entry */
|
---|
| 1980 | )
|
---|
| 1981 | {
|
---|
| 1982 | FRESULT res;
|
---|
| 1983 | UINT i, sz_ent;
|
---|
| 1984 | BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */
|
---|
| 1985 |
|
---|
| 1986 |
|
---|
| 1987 | /* Load 85 entry */
|
---|
| 1988 | res = move_window(dp->obj.fs, dp->sect);
|
---|
| 1989 | if (res != FR_OK) return res;
|
---|
| 1990 | if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR;
|
---|
| 1991 | mem_cpy(dirb + 0, dp->dir, SZDIRE);
|
---|
| 1992 | sz_ent = (dirb[XDIR_NumSec] + 1) * SZDIRE;
|
---|
| 1993 | if (sz_ent < 3 * SZDIRE || sz_ent > 19 * SZDIRE) return FR_INT_ERR;
|
---|
| 1994 |
|
---|
| 1995 | /* Load C0 entry */
|
---|
| 1996 | res = dir_next(dp, 0);
|
---|
| 1997 | if (res != FR_OK) return res;
|
---|
| 1998 | res = move_window(dp->obj.fs, dp->sect);
|
---|
| 1999 | if (res != FR_OK) return res;
|
---|
| 2000 | if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR;
|
---|
| 2001 | mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE);
|
---|
| 2002 | if (MAXDIRB(dirb[XDIR_NumName]) > sz_ent) return FR_INT_ERR;
|
---|
| 2003 |
|
---|
| 2004 | /* Load C1 entries */
|
---|
| 2005 | i = SZDIRE * 2; /* C1 offset */
|
---|
| 2006 | do {
|
---|
| 2007 | res = dir_next(dp, 0);
|
---|
| 2008 | if (res != FR_OK) return res;
|
---|
| 2009 | res = move_window(dp->obj.fs, dp->sect);
|
---|
| 2010 | if (res != FR_OK) return res;
|
---|
| 2011 | if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR;
|
---|
| 2012 | if (i < MAXDIRB(_MAX_LFN)) mem_cpy(dirb + i, dp->dir, SZDIRE);
|
---|
| 2013 | } while ((i += SZDIRE) < sz_ent);
|
---|
| 2014 |
|
---|
| 2015 | /* Sanity check (do it when accessible object name) */
|
---|
| 2016 | if (i <= MAXDIRB(_MAX_LFN)) {
|
---|
| 2017 | if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;
|
---|
| 2018 | }
|
---|
| 2019 | return FR_OK;
|
---|
| 2020 | }
|
---|
| 2021 |
|
---|
| 2022 |
|
---|
| 2023 | #if !_FS_READONLY || _FS_RPATH != 0
|
---|
| 2024 | /*------------------------------------------------*/
|
---|
| 2025 | /* exFAT: Load the object's directory entry block */
|
---|
| 2026 | /*------------------------------------------------*/
|
---|
| 2027 | static
|
---|
| 2028 | FRESULT load_obj_dir (
|
---|
| 2029 | DIR* dp, /* Blank directory object to be used to access containing direcotry */
|
---|
| 2030 | const _FDID* obj /* Object with its containing directory information */
|
---|
| 2031 | )
|
---|
| 2032 | {
|
---|
| 2033 | FRESULT res;
|
---|
| 2034 |
|
---|
| 2035 | /* Open object containing directory */
|
---|
| 2036 | dp->obj.fs = obj->fs;
|
---|
| 2037 | dp->obj.sclust = obj->c_scl;
|
---|
| 2038 | dp->obj.stat = (BYTE)obj->c_size;
|
---|
| 2039 | dp->obj.objsize = obj->c_size & 0xFFFFFF00;
|
---|
| 2040 | dp->blk_ofs = obj->c_ofs;
|
---|
| 2041 |
|
---|
| 2042 | res = dir_sdi(dp, dp->blk_ofs); /* Goto object's entry block */
|
---|
| 2043 | if (res == FR_OK) {
|
---|
| 2044 | res = load_xdir(dp); /* Load the object's entry block */
|
---|
| 2045 | }
|
---|
| 2046 | return res;
|
---|
| 2047 | }
|
---|
| 2048 | #endif
|
---|
| 2049 |
|
---|
| 2050 |
|
---|
| 2051 | #if !_FS_READONLY
|
---|
| 2052 | /*-----------------------------------------------*/
|
---|
| 2053 | /* exFAT: Store the directory block to the media */
|
---|
| 2054 | /*-----------------------------------------------*/
|
---|
| 2055 | static
|
---|
| 2056 | FRESULT store_xdir (
|
---|
| 2057 | DIR* dp /* Pointer to the direcotry object */
|
---|
| 2058 | )
|
---|
| 2059 | {
|
---|
| 2060 | FRESULT res;
|
---|
| 2061 | UINT nent;
|
---|
| 2062 | BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */
|
---|
| 2063 |
|
---|
| 2064 | /* Create set sum */
|
---|
| 2065 | st_word(dirb + XDIR_SetSum, xdir_sum(dirb));
|
---|
| 2066 | nent = dirb[XDIR_NumSec] + 1;
|
---|
| 2067 |
|
---|
| 2068 | /* Store the set of directory to the volume */
|
---|
| 2069 | res = dir_sdi(dp, dp->blk_ofs);
|
---|
| 2070 | while (res == FR_OK) {
|
---|
| 2071 | res = move_window(dp->obj.fs, dp->sect);
|
---|
| 2072 | if (res != FR_OK) break;
|
---|
| 2073 | mem_cpy(dp->dir, dirb, SZDIRE);
|
---|
| 2074 | dp->obj.fs->wflag = 1;
|
---|
| 2075 | if (--nent == 0) break;
|
---|
| 2076 | dirb += SZDIRE;
|
---|
| 2077 | res = dir_next(dp, 0);
|
---|
| 2078 | }
|
---|
| 2079 | return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;
|
---|
| 2080 | }
|
---|
| 2081 |
|
---|
| 2082 |
|
---|
| 2083 |
|
---|
| 2084 | /*-------------------------------------------*/
|
---|
| 2085 | /* exFAT: Create a new directory enrty block */
|
---|
| 2086 | /*-------------------------------------------*/
|
---|
| 2087 |
|
---|
| 2088 | static
|
---|
| 2089 | void create_xdir (
|
---|
| 2090 | BYTE* dirb, /* Pointer to the direcotry entry block buffer */
|
---|
| 2091 | const WCHAR* lfn /* Pointer to the nul terminated file name */
|
---|
| 2092 | )
|
---|
| 2093 | {
|
---|
| 2094 | UINT i;
|
---|
| 2095 | BYTE nb, nc;
|
---|
| 2096 | WCHAR chr;
|
---|
| 2097 |
|
---|
| 2098 |
|
---|
| 2099 | /* Create 85+C0 entry */
|
---|
| 2100 | mem_set(dirb, 0, 2 * SZDIRE);
|
---|
| 2101 | dirb[XDIR_Type] = 0x85;
|
---|
| 2102 | dirb[XDIR_Type + SZDIRE] = 0xC0;
|
---|
| 2103 |
|
---|
| 2104 | /* Create C1 entries */
|
---|
| 2105 | nc = 0; nb = 1; chr = 1; i = SZDIRE * 2;
|
---|
| 2106 | do {
|
---|
| 2107 | dirb[i++] = 0xC1; dirb[i++] = 0; /* Entry type C1 */
|
---|
| 2108 | do { /* Fill name field */
|
---|
| 2109 | if (chr && (chr = lfn[nc]) != 0) nc++; /* Get a character if exist */
|
---|
| 2110 | st_word(dirb + i, chr); /* Store it */
|
---|
| 2111 | } while ((i += 2) % SZDIRE != 0);
|
---|
| 2112 | nb++;
|
---|
| 2113 | } while (lfn[nc]); /* Fill next entry if any char follows */
|
---|
| 2114 |
|
---|
| 2115 | dirb[XDIR_NumName] = nc; /* Set name length */
|
---|
| 2116 | dirb[XDIR_NumSec] = nb; /* Set block length */
|
---|
| 2117 | st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */
|
---|
| 2118 | }
|
---|
| 2119 |
|
---|
| 2120 | #endif /* !_FS_READONLY */
|
---|
| 2121 | #endif /* _FS_EXFAT */
|
---|
| 2122 |
|
---|
| 2123 |
|
---|
| 2124 |
|
---|
| 2125 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
|
---|
| 2126 | /*-----------------------------------------------------------------------*/
|
---|
| 2127 | /* Read an object from the directory */
|
---|
| 2128 | /*-----------------------------------------------------------------------*/
|
---|
| 2129 |
|
---|
| 2130 | static
|
---|
| 2131 | FRESULT dir_read (
|
---|
| 2132 | DIR* dp, /* Pointer to the directory object */
|
---|
| 2133 | int vol /* Filtered by 0:file/directory or 1:volume label */
|
---|
| 2134 | )
|
---|
| 2135 | {
|
---|
| 2136 | FRESULT res = FR_NO_FILE;
|
---|
| 2137 | FATFS *fs = dp->obj.fs;
|
---|
| 2138 | BYTE a, c;
|
---|
| 2139 | #if _USE_LFN != 0
|
---|
| 2140 | BYTE ord = 0xFF, sum = 0xFF;
|
---|
| 2141 | #endif
|
---|
| 2142 |
|
---|
| 2143 | while (dp->sect) {
|
---|
| 2144 | res = move_window(fs, dp->sect);
|
---|
| 2145 | if (res != FR_OK) break;
|
---|
| 2146 | c = dp->dir[DIR_Name]; /* Test for the entry type */
|
---|
| 2147 | if (c == 0) {
|
---|
| 2148 | res = FR_NO_FILE; break; /* Reached to end of the directory */
|
---|
| 2149 | }
|
---|
| 2150 | #if _FS_EXFAT
|
---|
| 2151 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 2152 | if (_USE_LABEL && vol) {
|
---|
| 2153 | if (c == 0x83) break; /* Volume label entry? */
|
---|
| 2154 | } else {
|
---|
| 2155 | if (c == 0x85) { /* Start of the file entry block? */
|
---|
| 2156 | dp->blk_ofs = dp->dptr; /* Get location of the block */
|
---|
| 2157 | res = load_xdir(dp); /* Load the entry block */
|
---|
| 2158 | if (res == FR_OK) {
|
---|
| 2159 | dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */
|
---|
| 2160 | }
|
---|
| 2161 | break;
|
---|
| 2162 | }
|
---|
| 2163 | }
|
---|
| 2164 | } else
|
---|
| 2165 | #endif
|
---|
| 2166 | { /* On the FAT12/16/32 volume */
|
---|
| 2167 | dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */
|
---|
| 2168 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2169 | if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
|
---|
| 2170 | ord = 0xFF;
|
---|
| 2171 | } else {
|
---|
| 2172 | if (a == AM_LFN) { /* An LFN entry is found */
|
---|
| 2173 | if (c & LLEF) { /* Is it start of an LFN sequence? */
|
---|
| 2174 | sum = dp->dir[LDIR_Chksum];
|
---|
| 2175 | c &= (BYTE)~LLEF; ord = c;
|
---|
| 2176 | dp->blk_ofs = dp->dptr;
|
---|
| 2177 | }
|
---|
| 2178 | /* Check LFN validity and capture it */
|
---|
| 2179 | ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
|
---|
| 2180 | } else { /* An SFN entry is found */
|
---|
| 2181 | if (ord || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */
|
---|
| 2182 | dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */
|
---|
| 2183 | }
|
---|
| 2184 | break;
|
---|
| 2185 | }
|
---|
| 2186 | }
|
---|
| 2187 | #else /* Non LFN configuration */
|
---|
| 2188 | if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */
|
---|
| 2189 | break;
|
---|
| 2190 | }
|
---|
| 2191 | #endif
|
---|
| 2192 | }
|
---|
| 2193 | res = dir_next(dp, 0); /* Next entry */
|
---|
| 2194 | if (res != FR_OK) break;
|
---|
| 2195 | }
|
---|
| 2196 |
|
---|
| 2197 | if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */
|
---|
| 2198 | return res;
|
---|
| 2199 | }
|
---|
| 2200 |
|
---|
| 2201 | #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
|
---|
| 2202 |
|
---|
| 2203 |
|
---|
| 2204 |
|
---|
| 2205 | /*-----------------------------------------------------------------------*/
|
---|
| 2206 | /* Directory handling - Find an object in the directory */
|
---|
| 2207 | /*-----------------------------------------------------------------------*/
|
---|
| 2208 |
|
---|
| 2209 | static
|
---|
| 2210 | FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
|
---|
| 2211 | DIR* dp /* Pointer to the directory object with the file name */
|
---|
| 2212 | )
|
---|
| 2213 | {
|
---|
| 2214 | FRESULT res;
|
---|
| 2215 | FATFS *fs = dp->obj.fs;
|
---|
| 2216 | BYTE c;
|
---|
| 2217 | #if _USE_LFN != 0
|
---|
| 2218 | BYTE a, ord, sum;
|
---|
| 2219 | #endif
|
---|
| 2220 |
|
---|
| 2221 | res = dir_sdi(dp, 0); /* Rewind directory object */
|
---|
| 2222 | if (res != FR_OK) return res;
|
---|
| 2223 | #if _FS_EXFAT
|
---|
| 2224 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 2225 | BYTE nc;
|
---|
| 2226 | UINT di, ni;
|
---|
| 2227 | WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */
|
---|
| 2228 |
|
---|
| 2229 | while ((res = dir_read(dp, 0)) == FR_OK) { /* Read an item */
|
---|
| 2230 | #if _MAX_LFN < 255
|
---|
| 2231 | if (fs->dirbuf[XDIR_NumName] > _MAX_LFN) continue; /* Skip comparison if inaccessible object name */
|
---|
| 2232 | #endif
|
---|
| 2233 | if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip comparison if hash mismatched */
|
---|
| 2234 | for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */
|
---|
| 2235 | if ((di % SZDIRE) == 0) di += 2;
|
---|
| 2236 | if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;
|
---|
| 2237 | }
|
---|
| 2238 | if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */
|
---|
| 2239 | }
|
---|
| 2240 | return res;
|
---|
| 2241 | }
|
---|
| 2242 | #endif
|
---|
| 2243 | /* On the FAT12/16/32 volume */
|
---|
| 2244 | #if _USE_LFN != 0
|
---|
| 2245 | ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
---|
| 2246 | #endif
|
---|
| 2247 | do {
|
---|
| 2248 | res = move_window(fs, dp->sect);
|
---|
| 2249 | if (res != FR_OK) break;
|
---|
| 2250 | c = dp->dir[DIR_Name];
|
---|
| 2251 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
---|
| 2252 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2253 | dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;
|
---|
| 2254 | if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
|
---|
| 2255 | ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
---|
| 2256 | } else {
|
---|
| 2257 | if (a == AM_LFN) { /* An LFN entry is found */
|
---|
| 2258 | if (!(dp->fn[NSFLAG] & NS_NOLFN)) {
|
---|
| 2259 | if (c & LLEF) { /* Is it start of LFN sequence? */
|
---|
| 2260 | sum = dp->dir[LDIR_Chksum];
|
---|
| 2261 | c &= (BYTE)~LLEF; ord = c; /* LFN start order */
|
---|
| 2262 | dp->blk_ofs = dp->dptr; /* Start offset of LFN */
|
---|
| 2263 | }
|
---|
| 2264 | /* Check validity of the LFN entry and compare it with given name */
|
---|
| 2265 | ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
|
---|
| 2266 | }
|
---|
| 2267 | } else { /* An SFN entry is found */
|
---|
| 2268 | if (!ord && sum == sum_sfn(dp->dir)) break; /* LFN matched? */
|
---|
| 2269 | if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */
|
---|
| 2270 | ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
---|
| 2271 | }
|
---|
| 2272 | }
|
---|
| 2273 | #else /* Non LFN configuration */
|
---|
| 2274 | dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;
|
---|
| 2275 | if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */
|
---|
| 2276 | #endif
|
---|
| 2277 | res = dir_next(dp, 0); /* Next entry */
|
---|
| 2278 | } while (res == FR_OK);
|
---|
| 2279 |
|
---|
| 2280 | return res;
|
---|
| 2281 | }
|
---|
| 2282 |
|
---|
| 2283 |
|
---|
| 2284 |
|
---|
| 2285 |
|
---|
| 2286 | #if !_FS_READONLY
|
---|
| 2287 | /*-----------------------------------------------------------------------*/
|
---|
| 2288 | /* Register an object to the directory */
|
---|
| 2289 | /*-----------------------------------------------------------------------*/
|
---|
| 2290 |
|
---|
| 2291 | static
|
---|
| 2292 | FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
|
---|
| 2293 | DIR* dp /* Target directory with object name to be created */
|
---|
| 2294 | )
|
---|
| 2295 | {
|
---|
| 2296 | FRESULT res;
|
---|
| 2297 | FATFS *fs = dp->obj.fs;
|
---|
| 2298 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2299 | UINT n, nlen, nent;
|
---|
| 2300 | BYTE sn[12], sum;
|
---|
| 2301 |
|
---|
| 2302 |
|
---|
| 2303 | if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */
|
---|
| 2304 | for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */
|
---|
| 2305 |
|
---|
| 2306 | #if _FS_EXFAT
|
---|
| 2307 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 2308 | DIR dj;
|
---|
| 2309 |
|
---|
| 2310 | nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */
|
---|
| 2311 | res = dir_alloc(dp, nent); /* Allocate entries */
|
---|
| 2312 | if (res != FR_OK) return res;
|
---|
| 2313 | dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set the allocated entry block offset */
|
---|
| 2314 |
|
---|
| 2315 | if (dp->obj.sclust != 0 && (dp->obj.stat & 4)) { /* Has the sub-directory been stretched? */
|
---|
| 2316 | dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase the directory size by cluster size */
|
---|
| 2317 | res = fill_first_frag(&dp->obj); /* Fill first fragment on the FAT if needed */
|
---|
| 2318 | if (res != FR_OK) return res;
|
---|
| 2319 | res = fill_last_frag(&dp->obj, dp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */
|
---|
| 2320 | if (res != FR_OK) return res;
|
---|
| 2321 | res = load_obj_dir(&dj, &dp->obj); /* Load the object status */
|
---|
| 2322 | if (res != FR_OK) return res;
|
---|
| 2323 | st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize); /* Update the allocation status */
|
---|
| 2324 | st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);
|
---|
| 2325 | fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;
|
---|
| 2326 | res = store_xdir(&dj); /* Store the object status */
|
---|
| 2327 | if (res != FR_OK) return res;
|
---|
| 2328 | }
|
---|
| 2329 |
|
---|
| 2330 | create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */
|
---|
| 2331 | return FR_OK;
|
---|
| 2332 | }
|
---|
| 2333 | #endif
|
---|
| 2334 | /* On the FAT12/16/32 volume */
|
---|
| 2335 | mem_cpy(sn, dp->fn, 12);
|
---|
| 2336 | if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
|
---|
| 2337 | dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */
|
---|
| 2338 | for (n = 1; n < 100; n++) {
|
---|
| 2339 | gen_numname(dp->fn, sn, fs->lfnbuf, n); /* Generate a numbered name */
|
---|
| 2340 | res = dir_find(dp); /* Check if the name collides with existing SFN */
|
---|
| 2341 | if (res != FR_OK) break;
|
---|
| 2342 | }
|
---|
| 2343 | if (n == 100) return FR_DENIED; /* Abort if too many collisions */
|
---|
| 2344 | if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
|
---|
| 2345 | dp->fn[NSFLAG] = sn[NSFLAG];
|
---|
| 2346 | }
|
---|
| 2347 |
|
---|
| 2348 | /* Create an SFN with/without LFNs. */
|
---|
| 2349 | nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */
|
---|
| 2350 | res = dir_alloc(dp, nent); /* Allocate entries */
|
---|
| 2351 | if (res == FR_OK && --nent) { /* Set LFN entry if needed */
|
---|
| 2352 | res = dir_sdi(dp, dp->dptr - nent * SZDIRE);
|
---|
| 2353 | if (res == FR_OK) {
|
---|
| 2354 | sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
|
---|
| 2355 | do { /* Store LFN entries in bottom first */
|
---|
| 2356 | res = move_window(fs, dp->sect);
|
---|
| 2357 | if (res != FR_OK) break;
|
---|
| 2358 | put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum);
|
---|
| 2359 | fs->wflag = 1;
|
---|
| 2360 | res = dir_next(dp, 0); /* Next entry */
|
---|
| 2361 | } while (res == FR_OK && --nent);
|
---|
| 2362 | }
|
---|
| 2363 | }
|
---|
| 2364 |
|
---|
| 2365 | #else /* Non LFN configuration */
|
---|
| 2366 | res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
|
---|
| 2367 |
|
---|
| 2368 | #endif
|
---|
| 2369 |
|
---|
| 2370 | /* Set SFN entry */
|
---|
| 2371 | if (res == FR_OK) {
|
---|
| 2372 | res = move_window(fs, dp->sect);
|
---|
| 2373 | if (res == FR_OK) {
|
---|
| 2374 | mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */
|
---|
| 2375 | mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */
|
---|
| 2376 | #if _USE_LFN != 0
|
---|
| 2377 | dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
|
---|
| 2378 | #endif
|
---|
| 2379 | fs->wflag = 1;
|
---|
| 2380 | }
|
---|
| 2381 | }
|
---|
| 2382 |
|
---|
| 2383 | return res;
|
---|
| 2384 | }
|
---|
| 2385 |
|
---|
| 2386 | #endif /* !_FS_READONLY */
|
---|
| 2387 |
|
---|
| 2388 |
|
---|
| 2389 |
|
---|
| 2390 | #if !_FS_READONLY && _FS_MINIMIZE == 0
|
---|
| 2391 | /*-----------------------------------------------------------------------*/
|
---|
| 2392 | /* Remove an object from the directory */
|
---|
| 2393 | /*-----------------------------------------------------------------------*/
|
---|
| 2394 |
|
---|
| 2395 | static
|
---|
| 2396 | FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
|
---|
| 2397 | DIR* dp /* Directory object pointing the entry to be removed */
|
---|
| 2398 | )
|
---|
| 2399 | {
|
---|
| 2400 | FRESULT res;
|
---|
| 2401 | FATFS *fs = dp->obj.fs;
|
---|
| 2402 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2403 | DWORD last = dp->dptr;
|
---|
| 2404 |
|
---|
| 2405 | res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */
|
---|
| 2406 | if (res == FR_OK) {
|
---|
| 2407 | do {
|
---|
| 2408 | res = move_window(fs, dp->sect);
|
---|
| 2409 | if (res != FR_OK) break;
|
---|
| 2410 | /* Mark an entry 'deleted' */
|
---|
| 2411 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 2412 | dp->dir[XDIR_Type] &= 0x7F;
|
---|
| 2413 | } else { /* On the FAT12/16/32 volume */
|
---|
| 2414 | dp->dir[DIR_Name] = DDEM;
|
---|
| 2415 | }
|
---|
| 2416 | fs->wflag = 1;
|
---|
| 2417 | if (dp->dptr >= last) break; /* If reached last entry then all entries of the object has been deleted. */
|
---|
| 2418 | res = dir_next(dp, 0); /* Next entry */
|
---|
| 2419 | } while (res == FR_OK);
|
---|
| 2420 | if (res == FR_NO_FILE) res = FR_INT_ERR;
|
---|
| 2421 | }
|
---|
| 2422 | #else /* Non LFN configuration */
|
---|
| 2423 |
|
---|
| 2424 | res = move_window(fs, dp->sect);
|
---|
| 2425 | if (res == FR_OK) {
|
---|
| 2426 | dp->dir[DIR_Name] = DDEM;
|
---|
| 2427 | fs->wflag = 1;
|
---|
| 2428 | }
|
---|
| 2429 | #endif
|
---|
| 2430 |
|
---|
| 2431 | return res;
|
---|
| 2432 | }
|
---|
| 2433 |
|
---|
| 2434 | #endif /* !_FS_READONLY && _FS_MINIMIZE == 0 */
|
---|
| 2435 |
|
---|
| 2436 |
|
---|
| 2437 |
|
---|
| 2438 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
|
---|
| 2439 | /*-----------------------------------------------------------------------*/
|
---|
| 2440 | /* Get file information from directory entry */
|
---|
| 2441 | /*-----------------------------------------------------------------------*/
|
---|
| 2442 |
|
---|
| 2443 | static
|
---|
| 2444 | void get_fileinfo ( /* No return code */
|
---|
| 2445 | DIR* dp, /* Pointer to the directory object */
|
---|
| 2446 | FILINFO* fno /* Pointer to the file information to be filled */
|
---|
| 2447 | )
|
---|
| 2448 | {
|
---|
| 2449 | UINT i, j;
|
---|
| 2450 | TCHAR c;
|
---|
| 2451 | DWORD tm;
|
---|
| 2452 | #if _USE_LFN != 0
|
---|
| 2453 | WCHAR w, lfv;
|
---|
| 2454 | FATFS *fs = dp->obj.fs;
|
---|
| 2455 | #endif
|
---|
| 2456 |
|
---|
| 2457 |
|
---|
| 2458 | fno->fname[0] = 0; /* Invaidate file info */
|
---|
| 2459 | if (!dp->sect) return; /* Exit if read pointer has reached end of directory */
|
---|
| 2460 |
|
---|
| 2461 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2462 | #if _FS_EXFAT
|
---|
| 2463 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 2464 | get_xdir_info(fs->dirbuf, fno);
|
---|
| 2465 | return;
|
---|
| 2466 | } else
|
---|
| 2467 | #endif
|
---|
| 2468 | { /* On the FAT12/16/32 volume */
|
---|
| 2469 | if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */
|
---|
| 2470 | i = j = 0;
|
---|
| 2471 | while ((w = fs->lfnbuf[j++]) != 0) { /* Get an LFN character */
|
---|
| 2472 | #if !_LFN_UNICODE
|
---|
| 2473 | w = ff_convert(w, 0); /* Unicode -> OEM */
|
---|
| 2474 | if (w == 0) { i = 0; break; } /* No LFN if it could not be converted */
|
---|
| 2475 | if (_DF1S && w >= 0x100) { /* Put 1st byte if it is a DBC (always false at SBCS cfg) */
|
---|
| 2476 | fno->fname[i++] = (char)(w >> 8);
|
---|
| 2477 | }
|
---|
| 2478 | #endif
|
---|
| 2479 | if (i >= _MAX_LFN) { i = 0; break; } /* No LFN if buffer overflow */
|
---|
| 2480 | fno->fname[i++] = (TCHAR)w;
|
---|
| 2481 | }
|
---|
| 2482 | fno->fname[i] = 0; /* Terminate the LFN */
|
---|
| 2483 | }
|
---|
| 2484 | }
|
---|
| 2485 |
|
---|
| 2486 | i = j = 0;
|
---|
| 2487 | lfv = fno->fname[i]; /* LFN is exist if non-zero */
|
---|
| 2488 | while (i < 11) { /* Copy name body and extension */
|
---|
| 2489 | c = (TCHAR)dp->dir[i++];
|
---|
| 2490 | if (c == ' ') continue; /* Skip padding spaces */
|
---|
| 2491 | if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
|
---|
| 2492 | if (i == 9) { /* Insert a . if extension is exist */
|
---|
| 2493 | if (!lfv) fno->fname[j] = '.';
|
---|
| 2494 | fno->altname[j++] = '.';
|
---|
| 2495 | }
|
---|
| 2496 | #if _LFN_UNICODE
|
---|
| 2497 | if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) {
|
---|
| 2498 | c = c << 8 | dp->dir[i++];
|
---|
| 2499 | }
|
---|
| 2500 | c = ff_convert(c, 1); /* OEM -> Unicode */
|
---|
| 2501 | if (!c) c = '?';
|
---|
| 2502 | #endif
|
---|
| 2503 | fno->altname[j] = c;
|
---|
| 2504 | if (!lfv) {
|
---|
| 2505 | if (IsUpper(c) && (dp->dir[DIR_NTres] & ((i >= 9) ? NS_EXT : NS_BODY))) {
|
---|
| 2506 | c += 0x20; /* To lower */
|
---|
| 2507 | }
|
---|
| 2508 | fno->fname[j] = c;
|
---|
| 2509 | }
|
---|
| 2510 | j++;
|
---|
| 2511 | }
|
---|
| 2512 | if (!lfv) {
|
---|
| 2513 | fno->fname[j] = 0;
|
---|
| 2514 | if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */
|
---|
| 2515 | }
|
---|
| 2516 | fno->altname[j] = 0; /* Terminate the SFN */
|
---|
| 2517 |
|
---|
| 2518 | #else /* Non-LFN configuration */
|
---|
| 2519 | i = j = 0;
|
---|
| 2520 | while (i < 11) { /* Copy name body and extension */
|
---|
| 2521 | c = (TCHAR)dp->dir[i++];
|
---|
| 2522 | if (c == ' ') continue; /* Skip padding spaces */
|
---|
| 2523 | if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
|
---|
| 2524 | if (i == 9) fno->fname[j++] = '.'; /* Insert a . if extension is exist */
|
---|
| 2525 | fno->fname[j++] = c;
|
---|
| 2526 | }
|
---|
| 2527 | fno->fname[j] = 0;
|
---|
| 2528 | #endif
|
---|
| 2529 |
|
---|
| 2530 | fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */
|
---|
| 2531 | fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */
|
---|
| 2532 | tm = ld_dword(dp->dir + DIR_ModTime); /* Timestamp */
|
---|
| 2533 | fno->ftime = (WORD)tm; fno->fdate = (WORD)(tm >> 16);
|
---|
| 2534 | }
|
---|
| 2535 |
|
---|
| 2536 | #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
|
---|
| 2537 |
|
---|
| 2538 |
|
---|
| 2539 |
|
---|
| 2540 | #if _USE_FIND && _FS_MINIMIZE <= 1
|
---|
| 2541 | /*-----------------------------------------------------------------------*/
|
---|
| 2542 | /* Pattern matching */
|
---|
| 2543 | /*-----------------------------------------------------------------------*/
|
---|
| 2544 |
|
---|
| 2545 | static
|
---|
| 2546 | WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */
|
---|
| 2547 | const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */
|
---|
| 2548 | )
|
---|
| 2549 | {
|
---|
| 2550 | #if !_LFN_UNICODE
|
---|
| 2551 | WCHAR chr;
|
---|
| 2552 |
|
---|
| 2553 | chr = (BYTE)*(*ptr)++; /* Get a byte */
|
---|
| 2554 | if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
|
---|
| 2555 | #ifdef _EXCVT
|
---|
| 2556 | if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
|
---|
| 2557 | #else
|
---|
| 2558 | if (IsDBCS1(chr) && IsDBCS2(**ptr)) { /* Get DBC 2nd byte if needed */
|
---|
| 2559 | chr = chr << 8 | (BYTE)*(*ptr)++;
|
---|
| 2560 | }
|
---|
| 2561 | #endif
|
---|
| 2562 | return chr;
|
---|
| 2563 | #else
|
---|
| 2564 | return ff_wtoupper(*(*ptr)++); /* Get a word and to upper */
|
---|
| 2565 | #endif
|
---|
| 2566 | }
|
---|
| 2567 |
|
---|
| 2568 |
|
---|
| 2569 | static
|
---|
| 2570 | int pattern_matching ( /* 0:not matched, 1:matched */
|
---|
| 2571 | const TCHAR* pat, /* Matching pattern */
|
---|
| 2572 | const TCHAR* nam, /* String to be tested */
|
---|
| 2573 | int skip, /* Number of pre-skip chars (number of ?s) */
|
---|
| 2574 | int inf /* Infinite search (* specified) */
|
---|
| 2575 | )
|
---|
| 2576 | {
|
---|
| 2577 | const TCHAR *pp, *np;
|
---|
| 2578 | WCHAR pc, nc;
|
---|
| 2579 | int nm, nx;
|
---|
| 2580 |
|
---|
| 2581 |
|
---|
| 2582 | while (skip--) { /* Pre-skip name chars */
|
---|
| 2583 | if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
|
---|
| 2584 | }
|
---|
| 2585 | if (!*pat && inf) return 1; /* (short circuit) */
|
---|
| 2586 |
|
---|
| 2587 | do {
|
---|
| 2588 | pp = pat; np = nam; /* Top of pattern and name to match */
|
---|
| 2589 | for (;;) {
|
---|
| 2590 | if (*pp == '?' || *pp == '*') { /* Wildcard? */
|
---|
| 2591 | nm = nx = 0;
|
---|
| 2592 | do { /* Analyze the wildcard chars */
|
---|
| 2593 | if (*pp++ == '?') nm++; else nx = 1;
|
---|
| 2594 | } while (*pp == '?' || *pp == '*');
|
---|
| 2595 | if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
|
---|
| 2596 | nc = *np; break; /* Branch mismatched */
|
---|
| 2597 | }
|
---|
| 2598 | pc = get_achar(&pp); /* Get a pattern char */
|
---|
| 2599 | nc = get_achar(&np); /* Get a name char */
|
---|
| 2600 | if (pc != nc) break; /* Branch mismatched? */
|
---|
| 2601 | if (pc == 0) return 1; /* Branch matched? (matched at end of both strings) */
|
---|
| 2602 | }
|
---|
| 2603 | get_achar(&nam); /* nam++ */
|
---|
| 2604 | } while (inf && nc); /* Retry until end of name if infinite search is specified */
|
---|
| 2605 |
|
---|
| 2606 | return 0;
|
---|
| 2607 | }
|
---|
| 2608 |
|
---|
| 2609 | #endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
|
---|
| 2610 |
|
---|
| 2611 |
|
---|
| 2612 |
|
---|
| 2613 | /*-----------------------------------------------------------------------*/
|
---|
| 2614 | /* Pick a top segment and create the object name in directory form */
|
---|
| 2615 | /*-----------------------------------------------------------------------*/
|
---|
| 2616 |
|
---|
| 2617 | static
|
---|
| 2618 | FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
|
---|
| 2619 | DIR* dp, /* Pointer to the directory object */
|
---|
| 2620 | const TCHAR** path /* Pointer to pointer to the segment in the path string */
|
---|
| 2621 | )
|
---|
| 2622 | {
|
---|
| 2623 | #if _USE_LFN != 0 /* LFN configuration */
|
---|
| 2624 | BYTE b, cf;
|
---|
| 2625 | WCHAR w, *lfn;
|
---|
| 2626 | UINT i, ni, si, di;
|
---|
| 2627 | const TCHAR *p;
|
---|
| 2628 |
|
---|
| 2629 | /* Create LFN in Unicode */
|
---|
| 2630 | p = *path; lfn = dp->obj.fs->lfnbuf; si = di = 0;
|
---|
| 2631 | for (;;) {
|
---|
| 2632 | w = p[si++]; /* Get a character */
|
---|
| 2633 | if (w < ' ') break; /* Break if end of the path name */
|
---|
| 2634 | if (w == '/' || w == '\\') { /* Break if a separator is found */
|
---|
| 2635 | while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
|
---|
| 2636 | break;
|
---|
| 2637 | }
|
---|
| 2638 | if (di >= _MAX_LFN) return FR_INVALID_NAME; /* Reject too long name */
|
---|
| 2639 | #if !_LFN_UNICODE
|
---|
| 2640 | w &= 0xFF;
|
---|
| 2641 | if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
|
---|
| 2642 | b = (BYTE)p[si++]; /* Get 2nd byte */
|
---|
| 2643 | w = (w << 8) + b; /* Create a DBC */
|
---|
| 2644 | if (!IsDBCS2(b)) return FR_INVALID_NAME; /* Reject invalid sequence */
|
---|
| 2645 | }
|
---|
| 2646 | w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
|
---|
| 2647 | if (!w) return FR_INVALID_NAME; /* Reject invalid code */
|
---|
| 2648 | #endif
|
---|
| 2649 | if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */
|
---|
| 2650 | lfn[di++] = w; /* Store the Unicode character */
|
---|
| 2651 | }
|
---|
| 2652 | *path = &p[si]; /* Return pointer to the next segment */
|
---|
| 2653 | cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */
|
---|
| 2654 | #if _FS_RPATH != 0
|
---|
| 2655 | if ((di == 1 && lfn[di - 1] == '.') ||
|
---|
| 2656 | (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */
|
---|
| 2657 | lfn[di] = 0;
|
---|
| 2658 | for (i = 0; i < 11; i++) /* Create dot name for SFN entry */
|
---|
| 2659 | dp->fn[i] = (i < di) ? '.' : ' ';
|
---|
| 2660 | dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
|
---|
| 2661 | return FR_OK;
|
---|
| 2662 | }
|
---|
| 2663 | #endif
|
---|
| 2664 | while (di) { /* Snip off trailing spaces and dots if exist */
|
---|
| 2665 | w = lfn[di - 1];
|
---|
| 2666 | if (w != ' ' && w != '.') break;
|
---|
| 2667 | di--;
|
---|
| 2668 | }
|
---|
| 2669 | lfn[di] = 0; /* LFN is created */
|
---|
| 2670 | if (di == 0) return FR_INVALID_NAME; /* Reject nul name */
|
---|
| 2671 |
|
---|
| 2672 | /* Create SFN in directory form */
|
---|
| 2673 | mem_set(dp->fn, ' ', 11);
|
---|
| 2674 | for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
|
---|
| 2675 | if (si) cf |= NS_LOSS | NS_LFN;
|
---|
| 2676 | while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
|
---|
| 2677 |
|
---|
| 2678 | i = b = 0; ni = 8;
|
---|
| 2679 | for (;;) {
|
---|
| 2680 | w = lfn[si++]; /* Get an LFN character */
|
---|
| 2681 | if (!w) break; /* Break on end of the LFN */
|
---|
| 2682 | if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
|
---|
| 2683 | cf |= NS_LOSS | NS_LFN; continue;
|
---|
| 2684 | }
|
---|
| 2685 |
|
---|
| 2686 | if (i >= ni || si == di) { /* Extension or end of SFN */
|
---|
| 2687 | if (ni == 11) { /* Long extension */
|
---|
| 2688 | cf |= NS_LOSS | NS_LFN; break;
|
---|
| 2689 | }
|
---|
| 2690 | if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
|
---|
| 2691 | if (si > di) break; /* No extension */
|
---|
| 2692 | si = di; i = 8; ni = 11; /* Enter extension section */
|
---|
| 2693 | b <<= 2; continue;
|
---|
| 2694 | }
|
---|
| 2695 |
|
---|
| 2696 | if (w >= 0x80) { /* Non ASCII character */
|
---|
| 2697 | #ifdef _EXCVT
|
---|
| 2698 | w = ff_convert(w, 0); /* Unicode -> OEM code */
|
---|
| 2699 | if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
|
---|
| 2700 | #else
|
---|
| 2701 | w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
|
---|
| 2702 | #endif
|
---|
| 2703 | cf |= NS_LFN; /* Force create LFN entry */
|
---|
| 2704 | }
|
---|
| 2705 |
|
---|
| 2706 | if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */
|
---|
| 2707 | if (i >= ni - 1) {
|
---|
| 2708 | cf |= NS_LOSS | NS_LFN; i = ni; continue;
|
---|
| 2709 | }
|
---|
| 2710 | dp->fn[i++] = (BYTE)(w >> 8);
|
---|
| 2711 | } else { /* SBC */
|
---|
| 2712 | if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
|
---|
| 2713 | w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
|
---|
| 2714 | } else {
|
---|
| 2715 | if (IsUpper(w)) { /* ASCII large capital */
|
---|
| 2716 | b |= 2;
|
---|
| 2717 | } else {
|
---|
| 2718 | if (IsLower(w)) { /* ASCII small capital */
|
---|
| 2719 | b |= 1; w -= 0x20;
|
---|
| 2720 | }
|
---|
| 2721 | }
|
---|
| 2722 | }
|
---|
| 2723 | }
|
---|
| 2724 | dp->fn[i++] = (BYTE)w;
|
---|
| 2725 | }
|
---|
| 2726 |
|
---|
| 2727 | if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
|
---|
| 2728 |
|
---|
| 2729 | if (ni == 8) b <<= 2;
|
---|
| 2730 | if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* Create LFN entry when there are composite capitals */
|
---|
| 2731 | if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
|
---|
| 2732 | if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
|
---|
| 2733 | if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
|
---|
| 2734 | }
|
---|
| 2735 |
|
---|
| 2736 | dp->fn[NSFLAG] = cf; /* SFN is created */
|
---|
| 2737 |
|
---|
| 2738 | return FR_OK;
|
---|
| 2739 |
|
---|
| 2740 |
|
---|
| 2741 | #else /* _USE_LFN != 0 : Non-LFN configuration */
|
---|
| 2742 | BYTE c, d, *sfn;
|
---|
| 2743 | UINT ni, si, i;
|
---|
| 2744 | const char *p;
|
---|
| 2745 |
|
---|
| 2746 | /* Create file name in directory form */
|
---|
| 2747 | p = *path; sfn = dp->fn;
|
---|
| 2748 | mem_set(sfn, ' ', 11);
|
---|
| 2749 | si = i = 0; ni = 8;
|
---|
| 2750 | #if _FS_RPATH != 0
|
---|
| 2751 | if (p[si] == '.') { /* Is this a dot entry? */
|
---|
| 2752 | for (;;) {
|
---|
| 2753 | c = (BYTE)p[si++];
|
---|
| 2754 | if (c != '.' || si >= 3) break;
|
---|
| 2755 | sfn[i++] = c;
|
---|
| 2756 | }
|
---|
| 2757 | if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
|
---|
| 2758 | *path = p + si; /* Return pointer to the next segment */
|
---|
| 2759 | sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */
|
---|
| 2760 | return FR_OK;
|
---|
| 2761 | }
|
---|
| 2762 | #endif
|
---|
| 2763 | for (;;) {
|
---|
| 2764 | c = (BYTE)p[si++];
|
---|
| 2765 | if (c <= ' ') break; /* Break if end of the path name */
|
---|
| 2766 | if (c == '/' || c == '\\') { /* Break if a separator is found */
|
---|
| 2767 | while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
|
---|
| 2768 | break;
|
---|
| 2769 | }
|
---|
| 2770 | if (c == '.' || i >= ni) { /* End of body or over size? */
|
---|
| 2771 | if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Over size or invalid dot */
|
---|
| 2772 | i = 8; ni = 11; /* Goto extension */
|
---|
| 2773 | continue;
|
---|
| 2774 | }
|
---|
| 2775 | if (c >= 0x80) { /* Extended character? */
|
---|
| 2776 | #ifdef _EXCVT
|
---|
| 2777 | c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
|
---|
| 2778 | #else
|
---|
| 2779 | #if !_DF1S
|
---|
| 2780 | return FR_INVALID_NAME; /* Reject extended characters (ASCII only cfg) */
|
---|
| 2781 | #endif
|
---|
| 2782 | #endif
|
---|
| 2783 | }
|
---|
| 2784 | if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
|
---|
| 2785 | d = (BYTE)p[si++]; /* Get 2nd byte */
|
---|
| 2786 | if (!IsDBCS2(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */
|
---|
| 2787 | sfn[i++] = c;
|
---|
| 2788 | sfn[i++] = d;
|
---|
| 2789 | } else { /* SBC */
|
---|
| 2790 | if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */
|
---|
| 2791 | if (IsLower(c)) c -= 0x20; /* To upper */
|
---|
| 2792 | sfn[i++] = c;
|
---|
| 2793 | }
|
---|
| 2794 | }
|
---|
| 2795 | *path = p + si; /* Return pointer to the next segment */
|
---|
| 2796 | if (i == 0) return FR_INVALID_NAME; /* Reject nul string */
|
---|
| 2797 |
|
---|
| 2798 | if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
|
---|
| 2799 | sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */
|
---|
| 2800 |
|
---|
| 2801 | return FR_OK;
|
---|
| 2802 | #endif /* _USE_LFN != 0 */
|
---|
| 2803 | }
|
---|
| 2804 |
|
---|
| 2805 |
|
---|
| 2806 |
|
---|
| 2807 |
|
---|
| 2808 | /*-----------------------------------------------------------------------*/
|
---|
| 2809 | /* Follow a file path */
|
---|
| 2810 | /*-----------------------------------------------------------------------*/
|
---|
| 2811 |
|
---|
| 2812 | static
|
---|
| 2813 | FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
|
---|
| 2814 | DIR* dp, /* Directory object to return last directory and found object */
|
---|
| 2815 | const TCHAR* path /* Full-path string to find a file or directory */
|
---|
| 2816 | )
|
---|
| 2817 | {
|
---|
| 2818 | FRESULT res;
|
---|
| 2819 | BYTE ns;
|
---|
| 2820 | _FDID *obj = &dp->obj;
|
---|
| 2821 | FATFS *fs = obj->fs;
|
---|
| 2822 |
|
---|
| 2823 |
|
---|
| 2824 | #if _FS_RPATH != 0
|
---|
| 2825 | if (*path != '/' && *path != '\\') { /* Without heading separator */
|
---|
| 2826 | obj->sclust = fs->cdir; /* Start from current directory */
|
---|
| 2827 | } else
|
---|
| 2828 | #endif
|
---|
| 2829 | { /* With heading separator */
|
---|
| 2830 | while (*path == '/' || *path == '\\') path++; /* Strip heading separator */
|
---|
| 2831 | obj->sclust = 0; /* Start from root directory */
|
---|
| 2832 | }
|
---|
| 2833 | #if _FS_EXFAT
|
---|
| 2834 | obj->n_frag = 0; /* Invalidate last fragment counter of the object */
|
---|
| 2835 | #if _FS_RPATH != 0
|
---|
| 2836 | if (fs->fs_type == FS_EXFAT && obj->sclust) { /* Retrieve the sub-directory status if needed */
|
---|
| 2837 | DIR dj;
|
---|
| 2838 |
|
---|
| 2839 | obj->c_scl = fs->cdc_scl;
|
---|
| 2840 | obj->c_size = fs->cdc_size;
|
---|
| 2841 | obj->c_ofs = fs->cdc_ofs;
|
---|
| 2842 | res = load_obj_dir(&dj, obj);
|
---|
| 2843 | if (res != FR_OK) return res;
|
---|
| 2844 | obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize);
|
---|
| 2845 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 2846 | }
|
---|
| 2847 | #endif
|
---|
| 2848 | #endif
|
---|
| 2849 |
|
---|
| 2850 | if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
|
---|
| 2851 | dp->fn[NSFLAG] = NS_NONAME;
|
---|
| 2852 | res = dir_sdi(dp, 0);
|
---|
| 2853 |
|
---|
| 2854 | } else { /* Follow path */
|
---|
| 2855 | for (;;) {
|
---|
| 2856 | res = create_name(dp, &path); /* Get a segment name of the path */
|
---|
| 2857 | if (res != FR_OK) break;
|
---|
| 2858 | res = dir_find(dp); /* Find an object with the segment name */
|
---|
| 2859 | ns = dp->fn[NSFLAG];
|
---|
| 2860 | if (res != FR_OK) { /* Failed to find the object */
|
---|
| 2861 | if (res == FR_NO_FILE) { /* Object is not found */
|
---|
| 2862 | if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, stay there */
|
---|
| 2863 | if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
|
---|
| 2864 | dp->fn[NSFLAG] = NS_NONAME;
|
---|
| 2865 | res = FR_OK;
|
---|
| 2866 | } else { /* Could not find the object */
|
---|
| 2867 | if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
|
---|
| 2868 | }
|
---|
| 2869 | }
|
---|
| 2870 | break;
|
---|
| 2871 | }
|
---|
| 2872 | if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
|
---|
| 2873 | /* Get into the sub-directory */
|
---|
| 2874 | if (!(obj->attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */
|
---|
| 2875 | res = FR_NO_PATH; break;
|
---|
| 2876 | }
|
---|
| 2877 | #if _FS_EXFAT
|
---|
| 2878 | if (fs->fs_type == FS_EXFAT) { /* Save containing directory information for next dir */
|
---|
| 2879 | obj->c_scl = obj->sclust;
|
---|
| 2880 | obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
|
---|
| 2881 | obj->c_ofs = dp->blk_ofs;
|
---|
| 2882 | obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Open next directory */
|
---|
| 2883 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 2884 | obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
|
---|
| 2885 | } else
|
---|
| 2886 | #endif
|
---|
| 2887 | {
|
---|
| 2888 | obj->sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */
|
---|
| 2889 | }
|
---|
| 2890 | }
|
---|
| 2891 | }
|
---|
| 2892 |
|
---|
| 2893 | return res;
|
---|
| 2894 | }
|
---|
| 2895 |
|
---|
| 2896 |
|
---|
| 2897 |
|
---|
| 2898 |
|
---|
| 2899 | /*-----------------------------------------------------------------------*/
|
---|
| 2900 | /* Get logical drive number from path name */
|
---|
| 2901 | /*-----------------------------------------------------------------------*/
|
---|
| 2902 |
|
---|
| 2903 | static
|
---|
| 2904 | int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
|
---|
| 2905 | const TCHAR** path /* Pointer to pointer to the path name */
|
---|
| 2906 | )
|
---|
| 2907 | {
|
---|
| 2908 | const TCHAR *tp, *tt;
|
---|
| 2909 | UINT i;
|
---|
| 2910 | int vol = -1;
|
---|
| 2911 | #if _STR_VOLUME_ID /* Find string drive id */
|
---|
| 2912 | static const char* const volid[] = {_VOLUME_STRS};
|
---|
| 2913 | const char *sp;
|
---|
| 2914 | char c;
|
---|
| 2915 | TCHAR tc;
|
---|
| 2916 | #endif
|
---|
| 2917 |
|
---|
| 2918 |
|
---|
| 2919 | if (*path) { /* If the pointer is not a null */
|
---|
| 2920 | for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */
|
---|
| 2921 | if (*tt == ':') { /* If a ':' is exist in the path name */
|
---|
| 2922 | tp = *path;
|
---|
| 2923 | i = *tp++ - '0';
|
---|
| 2924 | if (i < 10 && tp == tt) { /* Is there a numeric drive id? */
|
---|
| 2925 | if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
|
---|
| 2926 | vol = (int)i;
|
---|
| 2927 | *path = ++tt;
|
---|
| 2928 | }
|
---|
| 2929 | }
|
---|
| 2930 | #if _STR_VOLUME_ID
|
---|
| 2931 | else { /* No numeric drive number, find string drive id */
|
---|
| 2932 | i = 0; tt++;
|
---|
| 2933 | do {
|
---|
| 2934 | sp = volid[i]; tp = *path;
|
---|
| 2935 | do { /* Compare a string drive id with path name */
|
---|
| 2936 | c = *sp++; tc = *tp++;
|
---|
| 2937 | if (IsLower(tc)) tc -= 0x20;
|
---|
| 2938 | } while (c && (TCHAR)c == tc);
|
---|
| 2939 | } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */
|
---|
| 2940 | if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
|
---|
| 2941 | vol = (int)i;
|
---|
| 2942 | *path = tt;
|
---|
| 2943 | }
|
---|
| 2944 | }
|
---|
| 2945 | #endif
|
---|
| 2946 | return vol;
|
---|
| 2947 | }
|
---|
| 2948 | #if _FS_RPATH != 0 && _VOLUMES >= 2
|
---|
| 2949 | vol = CurrVol; /* Current drive */
|
---|
| 2950 | #else
|
---|
| 2951 | vol = 0; /* Drive 0 */
|
---|
| 2952 | #endif
|
---|
| 2953 | }
|
---|
| 2954 | return vol;
|
---|
| 2955 | }
|
---|
| 2956 |
|
---|
| 2957 |
|
---|
| 2958 |
|
---|
| 2959 |
|
---|
| 2960 | /*-----------------------------------------------------------------------*/
|
---|
| 2961 | /* Load a sector and check if it is an FAT boot sector */
|
---|
| 2962 | /*-----------------------------------------------------------------------*/
|
---|
| 2963 |
|
---|
| 2964 | static
|
---|
| 2965 | BYTE check_fs ( /* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */
|
---|
| 2966 | FATFS* fs, /* File system object */
|
---|
| 2967 | DWORD sect /* Sector# (lba) to load and check if it is an FAT-VBR or not */
|
---|
| 2968 | )
|
---|
| 2969 | {
|
---|
| 2970 | fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
|
---|
| 2971 | if (move_window(fs, sect) != FR_OK) return 4; /* Load boot record */
|
---|
| 2972 |
|
---|
| 2973 | if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed here even if the sector size is >512) */
|
---|
| 2974 |
|
---|
| 2975 | if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) {
|
---|
| 2976 | if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0; /* Check "FAT" string */
|
---|
| 2977 | if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0; /* Check "FAT3" string */
|
---|
| 2978 | }
|
---|
| 2979 | #if _FS_EXFAT
|
---|
| 2980 | if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1;
|
---|
| 2981 | #endif
|
---|
| 2982 | return 2;
|
---|
| 2983 | }
|
---|
| 2984 |
|
---|
| 2985 |
|
---|
| 2986 |
|
---|
| 2987 |
|
---|
| 2988 | /*-----------------------------------------------------------------------*/
|
---|
| 2989 | /* Find logical drive and check if the volume is mounted */
|
---|
| 2990 | /*-----------------------------------------------------------------------*/
|
---|
| 2991 |
|
---|
| 2992 | static
|
---|
| 2993 | FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
|
---|
| 2994 | const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
|
---|
| 2995 | FATFS** rfs, /* Pointer to pointer to the found file system object */
|
---|
| 2996 | BYTE mode /* !=0: Check write protection for write access */
|
---|
| 2997 | )
|
---|
| 2998 | {
|
---|
| 2999 | BYTE fmt, *pt;
|
---|
| 3000 | int vol;
|
---|
| 3001 | DSTATUS stat;
|
---|
| 3002 | DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
|
---|
| 3003 | WORD nrsv;
|
---|
| 3004 | FATFS *fs;
|
---|
| 3005 | UINT i;
|
---|
| 3006 |
|
---|
| 3007 |
|
---|
| 3008 | /* Get logical drive number */
|
---|
| 3009 | *rfs = 0;
|
---|
| 3010 | vol = get_ldnumber(path);
|
---|
| 3011 | if (vol < 0) return FR_INVALID_DRIVE;
|
---|
| 3012 |
|
---|
| 3013 | /* Check if the file system object is valid or not */
|
---|
| 3014 | fs = FatFs[vol]; /* Get pointer to the file system object */
|
---|
| 3015 | if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
|
---|
| 3016 |
|
---|
| 3017 | ENTER_FF(fs); /* Lock the volume */
|
---|
| 3018 | *rfs = fs; /* Return pointer to the file system object */
|
---|
| 3019 |
|
---|
| 3020 | mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */
|
---|
| 3021 | if (fs->fs_type) { /* If the volume has been mounted */
|
---|
| 3022 | stat = disk_status(fs->drv);
|
---|
| 3023 | if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
|
---|
| 3024 | if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check write protection if needed */
|
---|
| 3025 | return FR_WRITE_PROTECTED;
|
---|
| 3026 | }
|
---|
| 3027 | return FR_OK; /* The file system object is valid */
|
---|
| 3028 | }
|
---|
| 3029 | }
|
---|
| 3030 |
|
---|
| 3031 | /* The file system object is not valid. */
|
---|
| 3032 | /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
|
---|
| 3033 |
|
---|
| 3034 | fs->fs_type = 0; /* Clear the file system object */
|
---|
| 3035 | fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
|
---|
| 3036 | stat = disk_initialize(fs->drv); /* Initialize the physical drive */
|
---|
| 3037 | if (stat & STA_NOINIT) { /* Check if the initialization succeeded */
|
---|
| 3038 | return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
|
---|
| 3039 | }
|
---|
| 3040 | if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */
|
---|
| 3041 | return FR_WRITE_PROTECTED;
|
---|
| 3042 | }
|
---|
| 3043 | #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
|
---|
| 3044 | if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR;
|
---|
| 3045 | if (SS(fs) > _MAX_SS || SS(fs) < _MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR;
|
---|
| 3046 | #endif
|
---|
| 3047 |
|
---|
| 3048 | /* Find an FAT partition on the drive. Supports only generic partitioning rules, FDISK and SFD. */
|
---|
| 3049 | bsect = 0;
|
---|
| 3050 | fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT-VBR as SFD */
|
---|
| 3051 | if (fmt == 2 || (fmt < 2 && LD2PT(vol) != 0)) { /* Not an FAT-VBR or forced partition number */
|
---|
| 3052 | for (i = 0; i < 4; i++) { /* Get partition offset */
|
---|
| 3053 | pt = fs->win + (MBR_Table + i * SZ_PTE);
|
---|
| 3054 | br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 0;
|
---|
| 3055 | }
|
---|
| 3056 | i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
|
---|
| 3057 | if (i) i--;
|
---|
| 3058 | do { /* Find an FAT volume */
|
---|
| 3059 | bsect = br[i];
|
---|
| 3060 | fmt = bsect ? check_fs(fs, bsect) : 3; /* Check the partition */
|
---|
| 3061 | } while (LD2PT(vol) == 0 && fmt >= 2 && ++i < 4);
|
---|
| 3062 | }
|
---|
| 3063 | if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
|
---|
| 3064 | if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */
|
---|
| 3065 |
|
---|
| 3066 | /* An FAT volume is found (bsect). Following code initializes the file system object */
|
---|
| 3067 |
|
---|
| 3068 | #if _FS_EXFAT
|
---|
| 3069 | if (fmt == 1) {
|
---|
| 3070 | QWORD maxlba;
|
---|
| 3071 |
|
---|
| 3072 | for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */
|
---|
| 3073 | if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;
|
---|
| 3074 |
|
---|
| 3075 | if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT revision (Must be 1.0) */
|
---|
| 3076 |
|
---|
| 3077 | if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) { /* (BPB_BytsPerSecEx must be equal to the physical sector size) */
|
---|
| 3078 | return FR_NO_FILESYSTEM;
|
---|
| 3079 | }
|
---|
| 3080 |
|
---|
| 3081 | maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */
|
---|
| 3082 | if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */
|
---|
| 3083 |
|
---|
| 3084 | fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */
|
---|
| 3085 |
|
---|
| 3086 | fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */
|
---|
| 3087 | if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */
|
---|
| 3088 |
|
---|
| 3089 | fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */
|
---|
| 3090 | if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */
|
---|
| 3091 |
|
---|
| 3092 | nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */
|
---|
| 3093 | if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */
|
---|
| 3094 | fs->n_fatent = nclst + 2;
|
---|
| 3095 |
|
---|
| 3096 | /* Boundaries and Limits */
|
---|
| 3097 | fs->volbase = bsect;
|
---|
| 3098 | fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);
|
---|
| 3099 | fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);
|
---|
| 3100 | if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */
|
---|
| 3101 | fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);
|
---|
| 3102 |
|
---|
| 3103 | /* Check if bitmap location is in assumption (at the first cluster) */
|
---|
| 3104 | if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR;
|
---|
| 3105 | for (i = 0; i < SS(fs); i += SZDIRE) {
|
---|
| 3106 | if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break; /* 81 entry with cluster #2? */
|
---|
| 3107 | }
|
---|
| 3108 | if (i == SS(fs)) return FR_NO_FILESYSTEM;
|
---|
| 3109 | #if !_FS_READONLY
|
---|
| 3110 | fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
|
---|
| 3111 | #endif
|
---|
| 3112 | fmt = FS_EXFAT; /* FAT sub-type */
|
---|
| 3113 | } else
|
---|
| 3114 | #endif /* _FS_EXFAT */
|
---|
| 3115 | {
|
---|
| 3116 | if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */
|
---|
| 3117 |
|
---|
| 3118 | fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
|
---|
| 3119 | if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);
|
---|
| 3120 | fs->fsize = fasize;
|
---|
| 3121 |
|
---|
| 3122 | fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */
|
---|
| 3123 | if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
|
---|
| 3124 | fasize *= fs->n_fats; /* Number of sectors for FAT area */
|
---|
| 3125 |
|
---|
| 3126 | fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */
|
---|
| 3127 | if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
|
---|
| 3128 |
|
---|
| 3129 | fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
|
---|
| 3130 | if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */
|
---|
| 3131 |
|
---|
| 3132 | tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
|
---|
| 3133 | if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);
|
---|
| 3134 |
|
---|
| 3135 | nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
|
---|
| 3136 | if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */
|
---|
| 3137 |
|
---|
| 3138 | /* Determine the FAT sub type */
|
---|
| 3139 | sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */
|
---|
| 3140 | if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
|
---|
| 3141 | nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
|
---|
| 3142 | if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
|
---|
| 3143 | fmt = FS_FAT32;
|
---|
| 3144 | if (nclst <= MAX_FAT16) fmt = FS_FAT16;
|
---|
| 3145 | if (nclst <= MAX_FAT12) fmt = FS_FAT12;
|
---|
| 3146 |
|
---|
| 3147 | /* Boundaries and Limits */
|
---|
| 3148 | fs->n_fatent = nclst + 2; /* Number of FAT entries */
|
---|
| 3149 | fs->volbase = bsect; /* Volume start sector */
|
---|
| 3150 | fs->fatbase = bsect + nrsv; /* FAT start sector */
|
---|
| 3151 | fs->database = bsect + sysect; /* Data start sector */
|
---|
| 3152 | if (fmt == FS_FAT32) {
|
---|
| 3153 | if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */
|
---|
| 3154 | if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
|
---|
| 3155 | fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */
|
---|
| 3156 | szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
|
---|
| 3157 | } else {
|
---|
| 3158 | if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM;/* (BPB_RootEntCnt must not be 0) */
|
---|
| 3159 | fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
|
---|
| 3160 | szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
|
---|
| 3161 | fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
|
---|
| 3162 | }
|
---|
| 3163 | if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */
|
---|
| 3164 |
|
---|
| 3165 | #if !_FS_READONLY
|
---|
| 3166 | /* Get FSINFO if available */
|
---|
| 3167 | fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
|
---|
| 3168 | fs->fsi_flag = 0x80;
|
---|
| 3169 | #if (_FS_NOFSINFO & 3) != 3
|
---|
| 3170 | if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */
|
---|
| 3171 | && ld_word(fs->win + BPB_FSInfo32) == 1
|
---|
| 3172 | && move_window(fs, bsect + 1) == FR_OK)
|
---|
| 3173 | {
|
---|
| 3174 | fs->fsi_flag = 0;
|
---|
| 3175 | if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */
|
---|
| 3176 | && ld_dword(fs->win + FSI_LeadSig) == 0x41615252
|
---|
| 3177 | && ld_dword(fs->win + FSI_StrucSig) == 0x61417272)
|
---|
| 3178 | {
|
---|
| 3179 | #if (_FS_NOFSINFO & 1) == 0
|
---|
| 3180 | fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
|
---|
| 3181 | #endif
|
---|
| 3182 | #if (_FS_NOFSINFO & 2) == 0
|
---|
| 3183 | fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
|
---|
| 3184 | #endif
|
---|
| 3185 | }
|
---|
| 3186 | }
|
---|
| 3187 | #endif /* (_FS_NOFSINFO & 3) != 3 */
|
---|
| 3188 | #endif /* !_FS_READONLY */
|
---|
| 3189 | }
|
---|
| 3190 |
|
---|
| 3191 | fs->fs_type = fmt; /* FAT sub-type */
|
---|
| 3192 | fs->id = ++Fsid; /* File system mount ID */
|
---|
| 3193 | #if _USE_LFN == 1
|
---|
| 3194 | fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
|
---|
| 3195 | #if _FS_EXFAT
|
---|
| 3196 | fs->dirbuf = DirBuf; /* Static directory block scratchpad buuffer */
|
---|
| 3197 | #endif
|
---|
| 3198 | #endif
|
---|
| 3199 | #if _FS_RPATH != 0
|
---|
| 3200 | fs->cdir = 0; /* Initialize current directory */
|
---|
| 3201 | #endif
|
---|
| 3202 | #if _FS_LOCK != 0 /* Clear file lock semaphores */
|
---|
| 3203 | clear_lock(fs);
|
---|
| 3204 | #endif
|
---|
| 3205 | return FR_OK;
|
---|
| 3206 | }
|
---|
| 3207 |
|
---|
| 3208 |
|
---|
| 3209 |
|
---|
| 3210 |
|
---|
| 3211 | /*-----------------------------------------------------------------------*/
|
---|
| 3212 | /* Check if the file/directory object is valid or not */
|
---|
| 3213 | /*-----------------------------------------------------------------------*/
|
---|
| 3214 |
|
---|
| 3215 | static
|
---|
| 3216 | FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */
|
---|
| 3217 | _FDID* obj, /* Pointer to the _OBJ, the 1st member in the FIL/DIR object, to check validity */
|
---|
| 3218 | FATFS** fs /* Pointer to pointer to the owner file system object to return */
|
---|
| 3219 | )
|
---|
| 3220 | {
|
---|
| 3221 | FRESULT res = FR_INVALID_OBJECT;
|
---|
| 3222 |
|
---|
| 3223 |
|
---|
| 3224 | if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) { /* Test if the object is valid */
|
---|
| 3225 | #if _FS_REENTRANT
|
---|
| 3226 | if (lock_fs(obj->fs)) { /* Obtain the filesystem object */
|
---|
| 3227 | if (!(disk_status(obj->fs->drv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */
|
---|
| 3228 | res = FR_OK;
|
---|
| 3229 | } else {
|
---|
| 3230 | unlock_fs(obj->fs, FR_OK);
|
---|
| 3231 | }
|
---|
| 3232 | } else {
|
---|
| 3233 | res = FR_TIMEOUT;
|
---|
| 3234 | }
|
---|
| 3235 | #else
|
---|
| 3236 | if (!(disk_status(obj->fs->drv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */
|
---|
| 3237 | res = FR_OK;
|
---|
| 3238 | }
|
---|
| 3239 | #endif
|
---|
| 3240 | }
|
---|
| 3241 | *fs = (res == FR_OK) ? obj->fs : 0; /* Corresponding filesystem object */
|
---|
| 3242 | return res;
|
---|
| 3243 | }
|
---|
| 3244 |
|
---|
| 3245 |
|
---|
| 3246 |
|
---|
| 3247 |
|
---|
| 3248 | /*---------------------------------------------------------------------------
|
---|
| 3249 |
|
---|
| 3250 | Public Functions (FatFs API)
|
---|
| 3251 |
|
---|
| 3252 | ----------------------------------------------------------------------------*/
|
---|
| 3253 |
|
---|
| 3254 |
|
---|
| 3255 |
|
---|
| 3256 | /*-----------------------------------------------------------------------*/
|
---|
| 3257 | /* Mount/Unmount a Logical Drive */
|
---|
| 3258 | /*-----------------------------------------------------------------------*/
|
---|
| 3259 |
|
---|
| 3260 | FRESULT f_mount (
|
---|
| 3261 | FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/
|
---|
| 3262 | const TCHAR* path, /* Logical drive number to be mounted/unmounted */
|
---|
| 3263 | BYTE opt /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */
|
---|
| 3264 | )
|
---|
| 3265 | {
|
---|
| 3266 | FATFS *cfs;
|
---|
| 3267 | int vol;
|
---|
| 3268 | FRESULT res;
|
---|
| 3269 | const TCHAR *rp = path;
|
---|
| 3270 |
|
---|
| 3271 |
|
---|
| 3272 | /* Get logical drive number */
|
---|
| 3273 | vol = get_ldnumber(&rp);
|
---|
| 3274 | if (vol < 0) return FR_INVALID_DRIVE;
|
---|
| 3275 | cfs = FatFs[vol]; /* Pointer to fs object */
|
---|
| 3276 |
|
---|
| 3277 | if (cfs) {
|
---|
| 3278 | #if _FS_LOCK != 0
|
---|
| 3279 | clear_lock(cfs);
|
---|
| 3280 | #endif
|
---|
| 3281 | #if _FS_REENTRANT /* Discard sync object of the current volume */
|
---|
| 3282 | if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
|
---|
| 3283 | #endif
|
---|
| 3284 | cfs->fs_type = 0; /* Clear old fs object */
|
---|
| 3285 | }
|
---|
| 3286 |
|
---|
| 3287 | if (fs) {
|
---|
| 3288 | fs->fs_type = 0; /* Clear new fs object */
|
---|
| 3289 | #if _FS_REENTRANT /* Create sync object for the new volume */
|
---|
| 3290 | if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
|
---|
| 3291 | #endif
|
---|
| 3292 | }
|
---|
| 3293 | FatFs[vol] = fs; /* Register new fs object */
|
---|
| 3294 |
|
---|
| 3295 | if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */
|
---|
| 3296 |
|
---|
| 3297 | res = find_volume(&path, &fs, 0); /* Force mounted the volume */
|
---|
| 3298 | LEAVE_FF(fs, res);
|
---|
| 3299 | }
|
---|
| 3300 |
|
---|
| 3301 |
|
---|
| 3302 |
|
---|
| 3303 |
|
---|
| 3304 | /*-----------------------------------------------------------------------*/
|
---|
| 3305 | /* Open or Create a File */
|
---|
| 3306 | /*-----------------------------------------------------------------------*/
|
---|
| 3307 |
|
---|
| 3308 | FRESULT f_open (
|
---|
| 3309 | FIL* fp, /* Pointer to the blank file object */
|
---|
| 3310 | const TCHAR* path, /* Pointer to the file name */
|
---|
| 3311 | BYTE mode /* Access mode and file open mode flags */
|
---|
| 3312 | )
|
---|
| 3313 | {
|
---|
| 3314 | FRESULT res;
|
---|
| 3315 | DIR dj;
|
---|
| 3316 | FATFS *fs;
|
---|
| 3317 | #if !_FS_READONLY
|
---|
| 3318 | DWORD dw, cl, bcs, clst, sc;
|
---|
| 3319 | FSIZE_t ofs;
|
---|
| 3320 | #endif
|
---|
| 3321 | DEF_NAMBUF
|
---|
| 3322 |
|
---|
| 3323 |
|
---|
| 3324 | if (!fp) return FR_INVALID_OBJECT;
|
---|
| 3325 |
|
---|
| 3326 | /* Get logical drive */
|
---|
| 3327 | mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND | FA_SEEKEND;
|
---|
| 3328 | res = find_volume(&path, &fs, mode);
|
---|
| 3329 | if (res == FR_OK) {
|
---|
| 3330 | dj.obj.fs = fs;
|
---|
| 3331 | INIT_NAMBUF(fs);
|
---|
| 3332 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 3333 | #if !_FS_READONLY /* R/W configuration */
|
---|
| 3334 | if (res == FR_OK) {
|
---|
| 3335 | if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
|
---|
| 3336 | res = FR_INVALID_NAME;
|
---|
| 3337 | }
|
---|
| 3338 | #if _FS_LOCK != 0
|
---|
| 3339 | else {
|
---|
| 3340 | res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
|
---|
| 3341 | }
|
---|
| 3342 | #endif
|
---|
| 3343 | }
|
---|
| 3344 | /* Create or Open a file */
|
---|
| 3345 | if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
|
---|
| 3346 | if (res != FR_OK) { /* No file, create new */
|
---|
| 3347 | if (res == FR_NO_FILE) { /* There is no file to open, create a new entry */
|
---|
| 3348 | #if _FS_LOCK != 0
|
---|
| 3349 | res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
|
---|
| 3350 | #else
|
---|
| 3351 | res = dir_register(&dj);
|
---|
| 3352 | #endif
|
---|
| 3353 | }
|
---|
| 3354 | mode |= FA_CREATE_ALWAYS; /* File is created */
|
---|
| 3355 | }
|
---|
| 3356 | else { /* Any object is already existing */
|
---|
| 3357 | if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
|
---|
| 3358 | res = FR_DENIED;
|
---|
| 3359 | } else {
|
---|
| 3360 | if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */
|
---|
| 3361 | }
|
---|
| 3362 | }
|
---|
| 3363 | if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
|
---|
| 3364 | dw = GET_FATTIME();
|
---|
| 3365 | #if _FS_EXFAT
|
---|
| 3366 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 3367 | /* Get current allocation info */
|
---|
| 3368 | fp->obj.fs = fs;
|
---|
| 3369 | fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);
|
---|
| 3370 | fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
|
---|
| 3371 | fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 3372 | fp->obj.n_frag = 0;
|
---|
| 3373 | /* Initialize directory entry block */
|
---|
| 3374 | st_dword(fs->dirbuf + XDIR_CrtTime, dw); /* Set created time */
|
---|
| 3375 | fs->dirbuf[XDIR_CrtTime10] = 0;
|
---|
| 3376 | st_dword(fs->dirbuf + XDIR_ModTime, dw); /* Set modified time */
|
---|
| 3377 | fs->dirbuf[XDIR_ModTime10] = 0;
|
---|
| 3378 | fs->dirbuf[XDIR_Attr] = AM_ARC; /* Reset attribute */
|
---|
| 3379 | st_dword(fs->dirbuf + XDIR_FstClus, 0); /* Reset file allocation info */
|
---|
| 3380 | st_qword(fs->dirbuf + XDIR_FileSize, 0);
|
---|
| 3381 | st_qword(fs->dirbuf + XDIR_ValidFileSize, 0);
|
---|
| 3382 | fs->dirbuf[XDIR_GenFlags] = 1;
|
---|
| 3383 | res = store_xdir(&dj);
|
---|
| 3384 | if (res == FR_OK && fp->obj.sclust) { /* Remove the cluster chain if exist */
|
---|
| 3385 | res = remove_chain(&fp->obj, fp->obj.sclust, 0);
|
---|
| 3386 | fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */
|
---|
| 3387 | }
|
---|
| 3388 | } else
|
---|
| 3389 | #endif
|
---|
| 3390 | {
|
---|
| 3391 | /* Clean directory info */
|
---|
| 3392 | st_dword(dj.dir + DIR_CrtTime, dw); /* Set created time */
|
---|
| 3393 | st_dword(dj.dir + DIR_ModTime, dw); /* Set modified time */
|
---|
| 3394 | dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */
|
---|
| 3395 | cl = ld_clust(fs, dj.dir); /* Get cluster chain */
|
---|
| 3396 | st_clust(fs, dj.dir, 0); /* Reset file allocation info */
|
---|
| 3397 | st_dword(dj.dir + DIR_FileSize, 0);
|
---|
| 3398 | fs->wflag = 1;
|
---|
| 3399 |
|
---|
| 3400 | if (cl) { /* Remove the cluster chain if exist */
|
---|
| 3401 | dw = fs->winsect;
|
---|
| 3402 | res = remove_chain(&dj.obj, cl, 0);
|
---|
| 3403 | if (res == FR_OK) {
|
---|
| 3404 | res = move_window(fs, dw);
|
---|
| 3405 | fs->last_clst = cl - 1; /* Reuse the cluster hole */
|
---|
| 3406 | }
|
---|
| 3407 | }
|
---|
| 3408 | }
|
---|
| 3409 | }
|
---|
| 3410 | }
|
---|
| 3411 | else { /* Open an existing file */
|
---|
| 3412 | if (res == FR_OK) { /* Following succeeded */
|
---|
| 3413 | if (dj.obj.attr & AM_DIR) { /* It is a directory */
|
---|
| 3414 | res = FR_NO_FILE;
|
---|
| 3415 | } else {
|
---|
| 3416 | if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* R/O violation */
|
---|
| 3417 | res = FR_DENIED;
|
---|
| 3418 | }
|
---|
| 3419 | }
|
---|
| 3420 | }
|
---|
| 3421 | }
|
---|
| 3422 | if (res == FR_OK) {
|
---|
| 3423 | if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
|
---|
| 3424 | mode |= FA_MODIFIED;
|
---|
| 3425 | fp->dir_sect = fs->winsect; /* Pointer to the directory entry */
|
---|
| 3426 | fp->dir_ptr = dj.dir;
|
---|
| 3427 | #if _FS_LOCK != 0
|
---|
| 3428 | fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
|
---|
| 3429 | if (!fp->obj.lockid) res = FR_INT_ERR;
|
---|
| 3430 | #endif
|
---|
| 3431 | }
|
---|
| 3432 | #else /* R/O configuration */
|
---|
| 3433 | if (res == FR_OK) {
|
---|
| 3434 | if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
|
---|
| 3435 | res = FR_INVALID_NAME;
|
---|
| 3436 | } else {
|
---|
| 3437 | if (dj.obj.attr & AM_DIR) { /* It is a directory */
|
---|
| 3438 | res = FR_NO_FILE;
|
---|
| 3439 | }
|
---|
| 3440 | }
|
---|
| 3441 | }
|
---|
| 3442 | #endif
|
---|
| 3443 |
|
---|
| 3444 | if (res == FR_OK) {
|
---|
| 3445 | #if _FS_EXFAT
|
---|
| 3446 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 3447 | fp->obj.c_scl = dj.obj.sclust; /* Get containing directory info */
|
---|
| 3448 | fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
|
---|
| 3449 | fp->obj.c_ofs = dj.blk_ofs;
|
---|
| 3450 | fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object allocation info */
|
---|
| 3451 | fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
|
---|
| 3452 | fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 3453 | } else
|
---|
| 3454 | #endif
|
---|
| 3455 | {
|
---|
| 3456 | fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */
|
---|
| 3457 | fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
|
---|
| 3458 | }
|
---|
| 3459 | #if _USE_FASTSEEK
|
---|
| 3460 | fp->cltbl = 0; /* Disable fast seek mode */
|
---|
| 3461 | #endif
|
---|
| 3462 | fp->obj.fs = fs; /* Validate the file object */
|
---|
| 3463 | fp->obj.id = fs->id;
|
---|
| 3464 | fp->flag = mode; /* Set file access mode */
|
---|
| 3465 | fp->err = 0; /* Clear error flag */
|
---|
| 3466 | fp->sect = 0; /* Invalidate current data sector */
|
---|
| 3467 | fp->fptr = 0; /* Set file pointer top of the file */
|
---|
| 3468 | #if !_FS_READONLY
|
---|
| 3469 | #if !_FS_TINY
|
---|
| 3470 | mem_set(fp->buf, 0, _MAX_SS); /* Clear sector buffer */
|
---|
| 3471 | #endif
|
---|
| 3472 | if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */
|
---|
| 3473 | fp->fptr = fp->obj.objsize; /* Offset to seek */
|
---|
| 3474 | bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */
|
---|
| 3475 | clst = fp->obj.sclust; /* Follow the cluster chain */
|
---|
| 3476 | for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {
|
---|
| 3477 | clst = get_fat(&fp->obj, clst);
|
---|
| 3478 | if (clst <= 1) res = FR_INT_ERR;
|
---|
| 3479 | if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;
|
---|
| 3480 | }
|
---|
| 3481 | fp->clust = clst;
|
---|
| 3482 | if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */
|
---|
| 3483 | if ((sc = clust2sect(fs, clst)) == 0) {
|
---|
| 3484 | res = FR_INT_ERR;
|
---|
| 3485 | } else {
|
---|
| 3486 | fp->sect = sc + (DWORD)(ofs / SS(fs));
|
---|
| 3487 | #if !_FS_TINY
|
---|
| 3488 | if (disk_read(fs->drv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
|
---|
| 3489 | #endif
|
---|
| 3490 | }
|
---|
| 3491 | }
|
---|
| 3492 | }
|
---|
| 3493 | #endif
|
---|
| 3494 | }
|
---|
| 3495 |
|
---|
| 3496 | FREE_NAMBUF();
|
---|
| 3497 | }
|
---|
| 3498 |
|
---|
| 3499 | if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */
|
---|
| 3500 |
|
---|
| 3501 | LEAVE_FF(fs, res);
|
---|
| 3502 | }
|
---|
| 3503 |
|
---|
| 3504 |
|
---|
| 3505 |
|
---|
| 3506 |
|
---|
| 3507 | /*-----------------------------------------------------------------------*/
|
---|
| 3508 | /* Read File */
|
---|
| 3509 | /*-----------------------------------------------------------------------*/
|
---|
| 3510 |
|
---|
| 3511 | FRESULT f_read (
|
---|
| 3512 | FIL* fp, /* Pointer to the file object */
|
---|
| 3513 | void* buff, /* Pointer to data buffer */
|
---|
| 3514 | UINT btr, /* Number of bytes to read */
|
---|
| 3515 | UINT* br /* Pointer to number of bytes read */
|
---|
| 3516 | )
|
---|
| 3517 | {
|
---|
| 3518 | FRESULT res;
|
---|
| 3519 | FATFS *fs;
|
---|
| 3520 | DWORD clst, sect;
|
---|
| 3521 | FSIZE_t remain;
|
---|
| 3522 | UINT rcnt, cc, csect;
|
---|
| 3523 | BYTE *rbuff = (BYTE*)buff;
|
---|
| 3524 |
|
---|
| 3525 |
|
---|
| 3526 | *br = 0; /* Clear read byte counter */
|
---|
| 3527 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 3528 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
|
---|
| 3529 | if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
|
---|
| 3530 | remain = fp->obj.objsize - fp->fptr;
|
---|
| 3531 | if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
|
---|
| 3532 |
|
---|
| 3533 | for ( ; btr; /* Repeat until all data read */
|
---|
| 3534 | rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
|
---|
| 3535 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
---|
| 3536 | csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
|
---|
| 3537 | if (csect == 0) { /* On the cluster boundary? */
|
---|
| 3538 | if (fp->fptr == 0) { /* On the top of the file? */
|
---|
| 3539 | clst = fp->obj.sclust; /* Follow cluster chain from the origin */
|
---|
| 3540 | } else { /* Middle or end of the file */
|
---|
| 3541 | #if _USE_FASTSEEK
|
---|
| 3542 | if (fp->cltbl) {
|
---|
| 3543 | clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
|
---|
| 3544 | } else
|
---|
| 3545 | #endif
|
---|
| 3546 | {
|
---|
| 3547 | clst = get_fat(&fp->obj, fp->clust); /* Follow cluster chain on the FAT */
|
---|
| 3548 | }
|
---|
| 3549 | }
|
---|
| 3550 | if (clst < 2) ABORT(fs, FR_INT_ERR);
|
---|
| 3551 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 3552 | fp->clust = clst; /* Update current cluster */
|
---|
| 3553 | }
|
---|
| 3554 | sect = clust2sect(fs, fp->clust); /* Get current sector */
|
---|
| 3555 | if (!sect) ABORT(fs, FR_INT_ERR);
|
---|
| 3556 | sect += csect;
|
---|
| 3557 | cc = btr / SS(fs); /* When remaining bytes >= sector size, */
|
---|
| 3558 | if (cc) { /* Read maximum contiguous sectors directly */
|
---|
| 3559 | if (csect + cc > fs->csize) { /* Clip at cluster boundary */
|
---|
| 3560 | cc = fs->csize - csect;
|
---|
| 3561 | }
|
---|
| 3562 | if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 3563 | #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
|
---|
| 3564 | #if _FS_TINY
|
---|
| 3565 | if (fs->wflag && fs->winsect - sect < cc) {
|
---|
| 3566 | mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
|
---|
| 3567 | }
|
---|
| 3568 | #else
|
---|
| 3569 | if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
|
---|
| 3570 | mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
|
---|
| 3571 | }
|
---|
| 3572 | #endif
|
---|
| 3573 | #endif
|
---|
| 3574 | rcnt = SS(fs) * cc; /* Number of bytes transferred */
|
---|
| 3575 | continue;
|
---|
| 3576 | }
|
---|
| 3577 | #if !_FS_TINY
|
---|
| 3578 | if (fp->sect != sect) { /* Load data sector if not in cache */
|
---|
| 3579 | #if !_FS_READONLY
|
---|
| 3580 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
---|
| 3581 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 3582 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 3583 | }
|
---|
| 3584 | #endif
|
---|
| 3585 | if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
---|
| 3586 | }
|
---|
| 3587 | #endif
|
---|
| 3588 | fp->sect = sect;
|
---|
| 3589 | }
|
---|
| 3590 | rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
|
---|
| 3591 | if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */
|
---|
| 3592 | #if _FS_TINY
|
---|
| 3593 | if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
|
---|
| 3594 | mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
|
---|
| 3595 | #else
|
---|
| 3596 | mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
|
---|
| 3597 | #endif
|
---|
| 3598 | }
|
---|
| 3599 |
|
---|
| 3600 | LEAVE_FF(fs, FR_OK);
|
---|
| 3601 | }
|
---|
| 3602 |
|
---|
| 3603 |
|
---|
| 3604 |
|
---|
| 3605 |
|
---|
| 3606 | #if !_FS_READONLY
|
---|
| 3607 | /*-----------------------------------------------------------------------*/
|
---|
| 3608 | /* Write File */
|
---|
| 3609 | /*-----------------------------------------------------------------------*/
|
---|
| 3610 |
|
---|
| 3611 | FRESULT f_write (
|
---|
| 3612 | FIL* fp, /* Pointer to the file object */
|
---|
| 3613 | const void* buff, /* Pointer to the data to be written */
|
---|
| 3614 | UINT btw, /* Number of bytes to write */
|
---|
| 3615 | UINT* bw /* Pointer to number of bytes written */
|
---|
| 3616 | )
|
---|
| 3617 | {
|
---|
| 3618 | FRESULT res;
|
---|
| 3619 | FATFS *fs;
|
---|
| 3620 | DWORD clst, sect;
|
---|
| 3621 | UINT wcnt, cc, csect;
|
---|
| 3622 | const BYTE *wbuff = (const BYTE*)buff;
|
---|
| 3623 |
|
---|
| 3624 |
|
---|
| 3625 | *bw = 0; /* Clear write byte counter */
|
---|
| 3626 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 3627 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
|
---|
| 3628 | if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
|
---|
| 3629 |
|
---|
| 3630 | /* Check fptr wrap-around (file size cannot reach 4GiB on FATxx) */
|
---|
| 3631 | if ((!_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {
|
---|
| 3632 | btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);
|
---|
| 3633 | }
|
---|
| 3634 |
|
---|
| 3635 | for ( ; btw; /* Repeat until all data written */
|
---|
| 3636 | wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) {
|
---|
| 3637 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
---|
| 3638 | csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */
|
---|
| 3639 | if (csect == 0) { /* On the cluster boundary? */
|
---|
| 3640 | if (fp->fptr == 0) { /* On the top of the file? */
|
---|
| 3641 | clst = fp->obj.sclust; /* Follow from the origin */
|
---|
| 3642 | if (clst == 0) { /* If no cluster is allocated, */
|
---|
| 3643 | clst = create_chain(&fp->obj, 0); /* create a new cluster chain */
|
---|
| 3644 | }
|
---|
| 3645 | } else { /* On the middle or end of the file */
|
---|
| 3646 | #if _USE_FASTSEEK
|
---|
| 3647 | if (fp->cltbl) {
|
---|
| 3648 | clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
|
---|
| 3649 | } else
|
---|
| 3650 | #endif
|
---|
| 3651 | {
|
---|
| 3652 | clst = create_chain(&fp->obj, fp->clust); /* Follow or stretch cluster chain on the FAT */
|
---|
| 3653 | }
|
---|
| 3654 | }
|
---|
| 3655 | if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
|
---|
| 3656 | if (clst == 1) ABORT(fs, FR_INT_ERR);
|
---|
| 3657 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 3658 | fp->clust = clst; /* Update current cluster */
|
---|
| 3659 | if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */
|
---|
| 3660 | }
|
---|
| 3661 | #if _FS_TINY
|
---|
| 3662 | if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */
|
---|
| 3663 | #else
|
---|
| 3664 | if (fp->flag & FA_DIRTY) { /* Write-back sector cache */
|
---|
| 3665 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 3666 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 3667 | }
|
---|
| 3668 | #endif
|
---|
| 3669 | sect = clust2sect(fs, fp->clust); /* Get current sector */
|
---|
| 3670 | if (!sect) ABORT(fs, FR_INT_ERR);
|
---|
| 3671 | sect += csect;
|
---|
| 3672 | cc = btw / SS(fs); /* When remaining bytes >= sector size, */
|
---|
| 3673 | if (cc) { /* Write maximum contiguous sectors directly */
|
---|
| 3674 | if (csect + cc > fs->csize) { /* Clip at cluster boundary */
|
---|
| 3675 | cc = fs->csize - csect;
|
---|
| 3676 | }
|
---|
| 3677 | if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 3678 | #if _FS_MINIMIZE <= 2
|
---|
| 3679 | #if _FS_TINY
|
---|
| 3680 | if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
|
---|
| 3681 | mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
|
---|
| 3682 | fs->wflag = 0;
|
---|
| 3683 | }
|
---|
| 3684 | #else
|
---|
| 3685 | if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
|
---|
| 3686 | mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
|
---|
| 3687 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 3688 | }
|
---|
| 3689 | #endif
|
---|
| 3690 | #endif
|
---|
| 3691 | wcnt = SS(fs) * cc; /* Number of bytes transferred */
|
---|
| 3692 | continue;
|
---|
| 3693 | }
|
---|
| 3694 | #if _FS_TINY
|
---|
| 3695 | if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */
|
---|
| 3696 | if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 3697 | fs->winsect = sect;
|
---|
| 3698 | }
|
---|
| 3699 | #else
|
---|
| 3700 | if (fp->sect != sect && /* Fill sector cache with file data */
|
---|
| 3701 | fp->fptr < fp->obj.objsize &&
|
---|
| 3702 | disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) {
|
---|
| 3703 | ABORT(fs, FR_DISK_ERR);
|
---|
| 3704 | }
|
---|
| 3705 | #endif
|
---|
| 3706 | fp->sect = sect;
|
---|
| 3707 | }
|
---|
| 3708 | wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
|
---|
| 3709 | if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */
|
---|
| 3710 | #if _FS_TINY
|
---|
| 3711 | if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
|
---|
| 3712 | mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
|
---|
| 3713 | fs->wflag = 1;
|
---|
| 3714 | #else
|
---|
| 3715 | mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
|
---|
| 3716 | fp->flag |= FA_DIRTY;
|
---|
| 3717 | #endif
|
---|
| 3718 | }
|
---|
| 3719 |
|
---|
| 3720 | fp->flag |= FA_MODIFIED; /* Set file change flag */
|
---|
| 3721 |
|
---|
| 3722 | LEAVE_FF(fs, FR_OK);
|
---|
| 3723 | }
|
---|
| 3724 |
|
---|
| 3725 |
|
---|
| 3726 |
|
---|
| 3727 |
|
---|
| 3728 | /*-----------------------------------------------------------------------*/
|
---|
| 3729 | /* Synchronize the File */
|
---|
| 3730 | /*-----------------------------------------------------------------------*/
|
---|
| 3731 |
|
---|
| 3732 | FRESULT f_sync (
|
---|
| 3733 | FIL* fp /* Pointer to the file object */
|
---|
| 3734 | )
|
---|
| 3735 | {
|
---|
| 3736 | FRESULT res;
|
---|
| 3737 | FATFS *fs;
|
---|
| 3738 | DWORD tm;
|
---|
| 3739 | BYTE *dir;
|
---|
| 3740 | #if _FS_EXFAT
|
---|
| 3741 | DIR dj;
|
---|
| 3742 | DEF_NAMBUF
|
---|
| 3743 | #endif
|
---|
| 3744 |
|
---|
| 3745 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 3746 | if (res == FR_OK) {
|
---|
| 3747 | if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */
|
---|
| 3748 | #if !_FS_TINY
|
---|
| 3749 | if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */
|
---|
| 3750 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);
|
---|
| 3751 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 3752 | }
|
---|
| 3753 | #endif
|
---|
| 3754 | /* Update the directory entry */
|
---|
| 3755 | tm = GET_FATTIME(); /* Modified time */
|
---|
| 3756 | #if _FS_EXFAT
|
---|
| 3757 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 3758 | res = fill_first_frag(&fp->obj); /* Fill first fragment on the FAT if needed */
|
---|
| 3759 | if (res == FR_OK) {
|
---|
| 3760 | res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */
|
---|
| 3761 | }
|
---|
| 3762 | if (res == FR_OK) {
|
---|
| 3763 | INIT_NAMBUF(fs);
|
---|
| 3764 | res = load_obj_dir(&dj, &fp->obj); /* Load directory entry block */
|
---|
| 3765 | if (res == FR_OK) {
|
---|
| 3766 | fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive bit */
|
---|
| 3767 | fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation info */
|
---|
| 3768 | st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);
|
---|
| 3769 | st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);
|
---|
| 3770 | st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);
|
---|
| 3771 | st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */
|
---|
| 3772 | fs->dirbuf[XDIR_ModTime10] = 0;
|
---|
| 3773 | st_dword(fs->dirbuf + XDIR_AccTime, 0);
|
---|
| 3774 | res = store_xdir(&dj); /* Restore it to the directory */
|
---|
| 3775 | if (res == FR_OK) {
|
---|
| 3776 | res = sync_fs(fs);
|
---|
| 3777 | fp->flag &= (BYTE)~FA_MODIFIED;
|
---|
| 3778 | }
|
---|
| 3779 | }
|
---|
| 3780 | FREE_NAMBUF();
|
---|
| 3781 | }
|
---|
| 3782 | } else
|
---|
| 3783 | #endif
|
---|
| 3784 | {
|
---|
| 3785 | res = move_window(fs, fp->dir_sect);
|
---|
| 3786 | if (res == FR_OK) {
|
---|
| 3787 | dir = fp->dir_ptr;
|
---|
| 3788 | dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
|
---|
| 3789 | st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation info */
|
---|
| 3790 | st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */
|
---|
| 3791 | st_dword(dir + DIR_ModTime, tm); /* Update modified time */
|
---|
| 3792 | st_word(dir + DIR_LstAccDate, 0);
|
---|
| 3793 | fs->wflag = 1;
|
---|
| 3794 | res = sync_fs(fs); /* Restore it to the directory */
|
---|
| 3795 | fp->flag &= (BYTE)~FA_MODIFIED;
|
---|
| 3796 | }
|
---|
| 3797 | }
|
---|
| 3798 | }
|
---|
| 3799 | }
|
---|
| 3800 |
|
---|
| 3801 | LEAVE_FF(fs, res);
|
---|
| 3802 | }
|
---|
| 3803 |
|
---|
| 3804 | #endif /* !_FS_READONLY */
|
---|
| 3805 |
|
---|
| 3806 |
|
---|
| 3807 |
|
---|
| 3808 |
|
---|
| 3809 | /*-----------------------------------------------------------------------*/
|
---|
| 3810 | /* Close File */
|
---|
| 3811 | /*-----------------------------------------------------------------------*/
|
---|
| 3812 |
|
---|
| 3813 | FRESULT f_close (
|
---|
| 3814 | FIL* fp /* Pointer to the file object to be closed */
|
---|
| 3815 | )
|
---|
| 3816 | {
|
---|
| 3817 | FRESULT res;
|
---|
| 3818 | FATFS *fs;
|
---|
| 3819 |
|
---|
| 3820 | #if !_FS_READONLY
|
---|
| 3821 | res = f_sync(fp); /* Flush cached data */
|
---|
| 3822 | if (res == FR_OK)
|
---|
| 3823 | #endif
|
---|
| 3824 | {
|
---|
| 3825 | res = validate(&fp->obj, &fs); /* Lock volume */
|
---|
| 3826 | if (res == FR_OK) {
|
---|
| 3827 | #if _FS_LOCK != 0
|
---|
| 3828 | res = dec_lock(fp->obj.lockid); /* Decrement file open counter */
|
---|
| 3829 | if (res == FR_OK)
|
---|
| 3830 | #endif
|
---|
| 3831 | {
|
---|
| 3832 | fp->obj.fs = 0; /* Invalidate file object */
|
---|
| 3833 | }
|
---|
| 3834 | #if _FS_REENTRANT
|
---|
| 3835 | unlock_fs(fs, FR_OK); /* Unlock volume */
|
---|
| 3836 | #endif
|
---|
| 3837 | }
|
---|
| 3838 | }
|
---|
| 3839 | return res;
|
---|
| 3840 | }
|
---|
| 3841 |
|
---|
| 3842 |
|
---|
| 3843 |
|
---|
| 3844 |
|
---|
| 3845 | #if _FS_RPATH >= 1
|
---|
| 3846 | /*-----------------------------------------------------------------------*/
|
---|
| 3847 | /* Change Current Directory or Current Drive, Get Current Directory */
|
---|
| 3848 | /*-----------------------------------------------------------------------*/
|
---|
| 3849 |
|
---|
| 3850 | #if _VOLUMES >= 2
|
---|
| 3851 | FRESULT f_chdrive (
|
---|
| 3852 | const TCHAR* path /* Drive number */
|
---|
| 3853 | )
|
---|
| 3854 | {
|
---|
| 3855 | int vol;
|
---|
| 3856 |
|
---|
| 3857 |
|
---|
| 3858 | /* Get logical drive number */
|
---|
| 3859 | vol = get_ldnumber(&path);
|
---|
| 3860 | if (vol < 0) return FR_INVALID_DRIVE;
|
---|
| 3861 |
|
---|
| 3862 | CurrVol = (BYTE)vol; /* Set it as current volume */
|
---|
| 3863 |
|
---|
| 3864 | return FR_OK;
|
---|
| 3865 | }
|
---|
| 3866 | #endif
|
---|
| 3867 |
|
---|
| 3868 |
|
---|
| 3869 | FRESULT f_chdir (
|
---|
| 3870 | const TCHAR* path /* Pointer to the directory path */
|
---|
| 3871 | )
|
---|
| 3872 | {
|
---|
| 3873 | FRESULT res;
|
---|
| 3874 | DIR dj;
|
---|
| 3875 | FATFS *fs;
|
---|
| 3876 | DEF_NAMBUF
|
---|
| 3877 |
|
---|
| 3878 | /* Get logical drive */
|
---|
| 3879 | res = find_volume(&path, &fs, 0);
|
---|
| 3880 | if (res == FR_OK) {
|
---|
| 3881 | dj.obj.fs = fs;
|
---|
| 3882 | INIT_NAMBUF(fs);
|
---|
| 3883 | res = follow_path(&dj, path); /* Follow the path */
|
---|
| 3884 | if (res == FR_OK) { /* Follow completed */
|
---|
| 3885 | if (dj.fn[NSFLAG] & NS_NONAME) {
|
---|
| 3886 | fs->cdir = dj.obj.sclust; /* It is the start directory itself */
|
---|
| 3887 | #if _FS_EXFAT
|
---|
| 3888 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 3889 | fs->cdc_scl = dj.obj.c_scl;
|
---|
| 3890 | fs->cdc_size = dj.obj.c_size;
|
---|
| 3891 | fs->cdc_ofs = dj.obj.c_ofs;
|
---|
| 3892 | }
|
---|
| 3893 | #endif
|
---|
| 3894 | } else {
|
---|
| 3895 | if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */
|
---|
| 3896 | #if _FS_EXFAT
|
---|
| 3897 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 3898 | fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */
|
---|
| 3899 | fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */
|
---|
| 3900 | fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
|
---|
| 3901 | fs->cdc_ofs = dj.blk_ofs;
|
---|
| 3902 | } else
|
---|
| 3903 | #endif
|
---|
| 3904 | {
|
---|
| 3905 | fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */
|
---|
| 3906 | }
|
---|
| 3907 | } else {
|
---|
| 3908 | res = FR_NO_PATH; /* Reached but a file */
|
---|
| 3909 | }
|
---|
| 3910 | }
|
---|
| 3911 | }
|
---|
| 3912 | FREE_NAMBUF();
|
---|
| 3913 | if (res == FR_NO_FILE) res = FR_NO_PATH;
|
---|
| 3914 | }
|
---|
| 3915 |
|
---|
| 3916 | LEAVE_FF(fs, res);
|
---|
| 3917 | }
|
---|
| 3918 |
|
---|
| 3919 |
|
---|
| 3920 | #if _FS_RPATH >= 2
|
---|
| 3921 | FRESULT f_getcwd (
|
---|
| 3922 | TCHAR* buff, /* Pointer to the directory path */
|
---|
| 3923 | UINT len /* Size of path */
|
---|
| 3924 | )
|
---|
| 3925 | {
|
---|
| 3926 | FRESULT res;
|
---|
| 3927 | DIR dj;
|
---|
| 3928 | FATFS *fs;
|
---|
| 3929 | UINT i, n;
|
---|
| 3930 | DWORD ccl;
|
---|
| 3931 | TCHAR *tp;
|
---|
| 3932 | FILINFO fno;
|
---|
| 3933 | DEF_NAMBUF
|
---|
| 3934 |
|
---|
| 3935 |
|
---|
| 3936 | *buff = 0;
|
---|
| 3937 | /* Get logical drive */
|
---|
| 3938 | res = find_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */
|
---|
| 3939 | if (res == FR_OK) {
|
---|
| 3940 | dj.obj.fs = fs;
|
---|
| 3941 | INIT_NAMBUF(fs);
|
---|
| 3942 | i = len; /* Bottom of buffer (directory stack base) */
|
---|
| 3943 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */
|
---|
| 3944 | dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */
|
---|
| 3945 | while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
|
---|
| 3946 | res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */
|
---|
| 3947 | if (res != FR_OK) break;
|
---|
| 3948 | res = move_window(fs, dj.sect);
|
---|
| 3949 | if (res != FR_OK) break;
|
---|
| 3950 | dj.obj.sclust = ld_clust(fs, dj.dir); /* Goto parent directory */
|
---|
| 3951 | res = dir_sdi(&dj, 0);
|
---|
| 3952 | if (res != FR_OK) break;
|
---|
| 3953 | do { /* Find the entry links to the child directory */
|
---|
| 3954 | res = dir_read(&dj, 0);
|
---|
| 3955 | if (res != FR_OK) break;
|
---|
| 3956 | if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */
|
---|
| 3957 | res = dir_next(&dj, 0);
|
---|
| 3958 | } while (res == FR_OK);
|
---|
| 3959 | if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
|
---|
| 3960 | if (res != FR_OK) break;
|
---|
| 3961 | get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
|
---|
| 3962 | for (n = 0; fno.fname[n]; n++) ;
|
---|
| 3963 | if (i < n + 3) {
|
---|
| 3964 | res = FR_NOT_ENOUGH_CORE; break;
|
---|
| 3965 | }
|
---|
| 3966 | while (n) buff[--i] = fno.fname[--n];
|
---|
| 3967 | buff[--i] = '/';
|
---|
| 3968 | }
|
---|
| 3969 | }
|
---|
| 3970 | tp = buff;
|
---|
| 3971 | if (res == FR_OK) {
|
---|
| 3972 | #if _VOLUMES >= 2
|
---|
| 3973 | *tp++ = '0' + CurrVol; /* Put drive number */
|
---|
| 3974 | *tp++ = ':';
|
---|
| 3975 | #endif
|
---|
| 3976 | if (i == len) { /* Root-directory */
|
---|
| 3977 | *tp++ = '/';
|
---|
| 3978 | } else { /* Sub-directroy */
|
---|
| 3979 | do /* Add stacked path str */
|
---|
| 3980 | *tp++ = buff[i++];
|
---|
| 3981 | while (i < len);
|
---|
| 3982 | }
|
---|
| 3983 | }
|
---|
| 3984 | *tp = 0;
|
---|
| 3985 | FREE_NAMBUF();
|
---|
| 3986 | }
|
---|
| 3987 |
|
---|
| 3988 | LEAVE_FF(fs, res);
|
---|
| 3989 | }
|
---|
| 3990 |
|
---|
| 3991 | #endif /* _FS_RPATH >= 2 */
|
---|
| 3992 | #endif /* _FS_RPATH >= 1 */
|
---|
| 3993 |
|
---|
| 3994 |
|
---|
| 3995 |
|
---|
| 3996 | #if _FS_MINIMIZE <= 2
|
---|
| 3997 | /*-----------------------------------------------------------------------*/
|
---|
| 3998 | /* Seek File R/W Pointer */
|
---|
| 3999 | /*-----------------------------------------------------------------------*/
|
---|
| 4000 |
|
---|
| 4001 | FRESULT f_lseek (
|
---|
| 4002 | FIL* fp, /* Pointer to the file object */
|
---|
| 4003 | FSIZE_t ofs /* File pointer from top of file */
|
---|
| 4004 | )
|
---|
| 4005 | {
|
---|
| 4006 | FRESULT res;
|
---|
| 4007 | FATFS *fs;
|
---|
| 4008 | DWORD clst, bcs, nsect;
|
---|
| 4009 | FSIZE_t ifptr;
|
---|
| 4010 | #if _USE_FASTSEEK
|
---|
| 4011 | DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
|
---|
| 4012 | #endif
|
---|
| 4013 |
|
---|
| 4014 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 4015 | if (res == FR_OK) res = (FRESULT)fp->err;
|
---|
| 4016 | #if _FS_EXFAT && !_FS_READONLY
|
---|
| 4017 | if (res == FR_OK && fs->fs_type == FS_EXFAT) {
|
---|
| 4018 | res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */
|
---|
| 4019 | }
|
---|
| 4020 | #endif
|
---|
| 4021 | if (res != FR_OK) LEAVE_FF(fs, res);
|
---|
| 4022 |
|
---|
| 4023 | #if _USE_FASTSEEK
|
---|
| 4024 | if (fp->cltbl) { /* Fast seek */
|
---|
| 4025 | if (ofs == CREATE_LINKMAP) { /* Create CLMT */
|
---|
| 4026 | tbl = fp->cltbl;
|
---|
| 4027 | tlen = *tbl++; ulen = 2; /* Given table size and required table size */
|
---|
| 4028 | cl = fp->obj.sclust; /* Origin of the chain */
|
---|
| 4029 | if (cl) {
|
---|
| 4030 | do {
|
---|
| 4031 | /* Get a fragment */
|
---|
| 4032 | tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
|
---|
| 4033 | do {
|
---|
| 4034 | pcl = cl; ncl++;
|
---|
| 4035 | cl = get_fat(&fp->obj, cl);
|
---|
| 4036 | if (cl <= 1) ABORT(fs, FR_INT_ERR);
|
---|
| 4037 | if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 4038 | } while (cl == pcl + 1);
|
---|
| 4039 | if (ulen <= tlen) { /* Store the length and top of the fragment */
|
---|
| 4040 | *tbl++ = ncl; *tbl++ = tcl;
|
---|
| 4041 | }
|
---|
| 4042 | } while (cl < fs->n_fatent); /* Repeat until end of chain */
|
---|
| 4043 | }
|
---|
| 4044 | *fp->cltbl = ulen; /* Number of items used */
|
---|
| 4045 | if (ulen <= tlen) {
|
---|
| 4046 | *tbl = 0; /* Terminate table */
|
---|
| 4047 | } else {
|
---|
| 4048 | res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
|
---|
| 4049 | }
|
---|
| 4050 | } else { /* Fast seek */
|
---|
| 4051 | if (ofs > fp->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */
|
---|
| 4052 | fp->fptr = ofs; /* Set file pointer */
|
---|
| 4053 | if (ofs) {
|
---|
| 4054 | fp->clust = clmt_clust(fp, ofs - 1);
|
---|
| 4055 | dsc = clust2sect(fs, fp->clust);
|
---|
| 4056 | if (!dsc) ABORT(fs, FR_INT_ERR);
|
---|
| 4057 | dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);
|
---|
| 4058 | if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */
|
---|
| 4059 | #if !_FS_TINY
|
---|
| 4060 | #if !_FS_READONLY
|
---|
| 4061 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
---|
| 4062 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 4063 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 4064 | }
|
---|
| 4065 | #endif
|
---|
| 4066 | if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */
|
---|
| 4067 | #endif
|
---|
| 4068 | fp->sect = dsc;
|
---|
| 4069 | }
|
---|
| 4070 | }
|
---|
| 4071 | }
|
---|
| 4072 | } else
|
---|
| 4073 | #endif
|
---|
| 4074 |
|
---|
| 4075 | /* Normal Seek */
|
---|
| 4076 | {
|
---|
| 4077 | #if _FS_EXFAT
|
---|
| 4078 | if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4GiB-1 if at FATxx */
|
---|
| 4079 | #endif
|
---|
| 4080 | if (ofs > fp->obj.objsize && (_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */
|
---|
| 4081 | ofs = fp->obj.objsize;
|
---|
| 4082 | }
|
---|
| 4083 | ifptr = fp->fptr;
|
---|
| 4084 | fp->fptr = nsect = 0;
|
---|
| 4085 | if (ofs) {
|
---|
| 4086 | bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */
|
---|
| 4087 | if (ifptr > 0 &&
|
---|
| 4088 | (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
|
---|
| 4089 | fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */
|
---|
| 4090 | ofs -= fp->fptr;
|
---|
| 4091 | clst = fp->clust;
|
---|
| 4092 | } else { /* When seek to back cluster, */
|
---|
| 4093 | clst = fp->obj.sclust; /* start from the first cluster */
|
---|
| 4094 | #if !_FS_READONLY
|
---|
| 4095 | if (clst == 0) { /* If no cluster chain, create a new chain */
|
---|
| 4096 | clst = create_chain(&fp->obj, 0);
|
---|
| 4097 | if (clst == 1) ABORT(fs, FR_INT_ERR);
|
---|
| 4098 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 4099 | fp->obj.sclust = clst;
|
---|
| 4100 | }
|
---|
| 4101 | #endif
|
---|
| 4102 | fp->clust = clst;
|
---|
| 4103 | }
|
---|
| 4104 | if (clst != 0) {
|
---|
| 4105 | while (ofs > bcs) { /* Cluster following loop */
|
---|
| 4106 | ofs -= bcs; fp->fptr += bcs;
|
---|
| 4107 | #if !_FS_READONLY
|
---|
| 4108 | if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
|
---|
| 4109 | if (_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */
|
---|
| 4110 | fp->obj.objsize = fp->fptr;
|
---|
| 4111 | fp->flag |= FA_MODIFIED;
|
---|
| 4112 | }
|
---|
| 4113 | clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */
|
---|
| 4114 | if (clst == 0) { /* Clip file size in case of disk full */
|
---|
| 4115 | ofs = 0; break;
|
---|
| 4116 | }
|
---|
| 4117 | } else
|
---|
| 4118 | #endif
|
---|
| 4119 | {
|
---|
| 4120 | clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */
|
---|
| 4121 | }
|
---|
| 4122 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 4123 | if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);
|
---|
| 4124 | fp->clust = clst;
|
---|
| 4125 | }
|
---|
| 4126 | fp->fptr += ofs;
|
---|
| 4127 | if (ofs % SS(fs)) {
|
---|
| 4128 | nsect = clust2sect(fs, clst); /* Current sector */
|
---|
| 4129 | if (!nsect) ABORT(fs, FR_INT_ERR);
|
---|
| 4130 | nsect += (DWORD)(ofs / SS(fs));
|
---|
| 4131 | }
|
---|
| 4132 | }
|
---|
| 4133 | }
|
---|
| 4134 | if (!_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */
|
---|
| 4135 | fp->obj.objsize = fp->fptr;
|
---|
| 4136 | fp->flag |= FA_MODIFIED;
|
---|
| 4137 | }
|
---|
| 4138 | if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */
|
---|
| 4139 | #if !_FS_TINY
|
---|
| 4140 | #if !_FS_READONLY
|
---|
| 4141 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
---|
| 4142 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 4143 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 4144 | }
|
---|
| 4145 | #endif
|
---|
| 4146 | if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
---|
| 4147 | #endif
|
---|
| 4148 | fp->sect = nsect;
|
---|
| 4149 | }
|
---|
| 4150 | }
|
---|
| 4151 |
|
---|
| 4152 | LEAVE_FF(fs, res);
|
---|
| 4153 | }
|
---|
| 4154 |
|
---|
| 4155 |
|
---|
| 4156 |
|
---|
| 4157 | #if _FS_MINIMIZE <= 1
|
---|
| 4158 | /*-----------------------------------------------------------------------*/
|
---|
| 4159 | /* Create a Directory Object */
|
---|
| 4160 | /*-----------------------------------------------------------------------*/
|
---|
| 4161 |
|
---|
| 4162 | FRESULT f_opendir (
|
---|
| 4163 | DIR* dp, /* Pointer to directory object to create */
|
---|
| 4164 | const TCHAR* path /* Pointer to the directory path */
|
---|
| 4165 | )
|
---|
| 4166 | {
|
---|
| 4167 | FRESULT res;
|
---|
| 4168 | FATFS *fs;
|
---|
| 4169 | _FDID *obj;
|
---|
| 4170 | DEF_NAMBUF
|
---|
| 4171 |
|
---|
| 4172 |
|
---|
| 4173 | if (!dp) return FR_INVALID_OBJECT;
|
---|
| 4174 |
|
---|
| 4175 | /* Get logical drive */
|
---|
| 4176 | obj = &dp->obj;
|
---|
| 4177 | res = find_volume(&path, &fs, 0);
|
---|
| 4178 | if (res == FR_OK) {
|
---|
| 4179 | obj->fs = fs;
|
---|
| 4180 | INIT_NAMBUF(fs);
|
---|
| 4181 | res = follow_path(dp, path); /* Follow the path to the directory */
|
---|
| 4182 | if (res == FR_OK) { /* Follow completed */
|
---|
| 4183 | if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */
|
---|
| 4184 | if (obj->attr & AM_DIR) { /* This object is a sub-directory */
|
---|
| 4185 | #if _FS_EXFAT
|
---|
| 4186 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4187 | obj->c_scl = obj->sclust; /* Get containing directory inforamation */
|
---|
| 4188 | obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
|
---|
| 4189 | obj->c_ofs = dp->blk_ofs;
|
---|
| 4190 | obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object allocation info */
|
---|
| 4191 | obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
|
---|
| 4192 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 4193 | } else
|
---|
| 4194 | #endif
|
---|
| 4195 | {
|
---|
| 4196 | obj->sclust = ld_clust(fs, dp->dir); /* Get object allocation info */
|
---|
| 4197 | }
|
---|
| 4198 | } else { /* This object is a file */
|
---|
| 4199 | res = FR_NO_PATH;
|
---|
| 4200 | }
|
---|
| 4201 | }
|
---|
| 4202 | if (res == FR_OK) {
|
---|
| 4203 | obj->id = fs->id;
|
---|
| 4204 | res = dir_sdi(dp, 0); /* Rewind directory */
|
---|
| 4205 | #if _FS_LOCK != 0
|
---|
| 4206 | if (res == FR_OK) {
|
---|
| 4207 | if (obj->sclust) {
|
---|
| 4208 | obj->lockid = inc_lock(dp, 0); /* Lock the sub directory */
|
---|
| 4209 | if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES;
|
---|
| 4210 | } else {
|
---|
| 4211 | obj->lockid = 0; /* Root directory need not to be locked */
|
---|
| 4212 | }
|
---|
| 4213 | }
|
---|
| 4214 | #endif
|
---|
| 4215 | }
|
---|
| 4216 | }
|
---|
| 4217 | FREE_NAMBUF();
|
---|
| 4218 | if (res == FR_NO_FILE) res = FR_NO_PATH;
|
---|
| 4219 | }
|
---|
| 4220 | if (res != FR_OK) obj->fs = 0; /* Invalidate the directory object if function faild */
|
---|
| 4221 |
|
---|
| 4222 | LEAVE_FF(fs, res);
|
---|
| 4223 | }
|
---|
| 4224 |
|
---|
| 4225 |
|
---|
| 4226 |
|
---|
| 4227 |
|
---|
| 4228 | /*-----------------------------------------------------------------------*/
|
---|
| 4229 | /* Close Directory */
|
---|
| 4230 | /*-----------------------------------------------------------------------*/
|
---|
| 4231 |
|
---|
| 4232 | FRESULT f_closedir (
|
---|
| 4233 | DIR *dp /* Pointer to the directory object to be closed */
|
---|
| 4234 | )
|
---|
| 4235 | {
|
---|
| 4236 | FRESULT res;
|
---|
| 4237 | FATFS *fs;
|
---|
| 4238 |
|
---|
| 4239 |
|
---|
| 4240 | res = validate(&dp->obj, &fs); /* Check validity of the file object */
|
---|
| 4241 | if (res == FR_OK) {
|
---|
| 4242 | #if _FS_LOCK != 0
|
---|
| 4243 | if (dp->obj.lockid) { /* Decrement sub-directory open counter */
|
---|
| 4244 | res = dec_lock(dp->obj.lockid);
|
---|
| 4245 | }
|
---|
| 4246 | if (res == FR_OK)
|
---|
| 4247 | #endif
|
---|
| 4248 | {
|
---|
| 4249 | dp->obj.fs = 0; /* Invalidate directory object */
|
---|
| 4250 | }
|
---|
| 4251 | #if _FS_REENTRANT
|
---|
| 4252 | unlock_fs(fs, FR_OK); /* Unlock volume */
|
---|
| 4253 | #endif
|
---|
| 4254 | }
|
---|
| 4255 | return res;
|
---|
| 4256 | }
|
---|
| 4257 |
|
---|
| 4258 |
|
---|
| 4259 |
|
---|
| 4260 |
|
---|
| 4261 | /*-----------------------------------------------------------------------*/
|
---|
| 4262 | /* Read Directory Entries in Sequence */
|
---|
| 4263 | /*-----------------------------------------------------------------------*/
|
---|
| 4264 |
|
---|
| 4265 | FRESULT f_readdir (
|
---|
| 4266 | DIR* dp, /* Pointer to the open directory object */
|
---|
| 4267 | FILINFO* fno /* Pointer to file information to return */
|
---|
| 4268 | )
|
---|
| 4269 | {
|
---|
| 4270 | FRESULT res;
|
---|
| 4271 | FATFS *fs;
|
---|
| 4272 | DEF_NAMBUF
|
---|
| 4273 |
|
---|
| 4274 |
|
---|
| 4275 | res = validate(&dp->obj, &fs); /* Check validity of the directory object */
|
---|
| 4276 | if (res == FR_OK) {
|
---|
| 4277 | if (!fno) {
|
---|
| 4278 | res = dir_sdi(dp, 0); /* Rewind the directory object */
|
---|
| 4279 | } else {
|
---|
| 4280 | INIT_NAMBUF(fs);
|
---|
| 4281 | res = dir_read(dp, 0); /* Read an item */
|
---|
| 4282 | if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */
|
---|
| 4283 | if (res == FR_OK) { /* A valid entry is found */
|
---|
| 4284 | get_fileinfo(dp, fno); /* Get the object information */
|
---|
| 4285 | res = dir_next(dp, 0); /* Increment index for next */
|
---|
| 4286 | if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */
|
---|
| 4287 | }
|
---|
| 4288 | FREE_NAMBUF();
|
---|
| 4289 | }
|
---|
| 4290 | }
|
---|
| 4291 | LEAVE_FF(fs, res);
|
---|
| 4292 | }
|
---|
| 4293 |
|
---|
| 4294 |
|
---|
| 4295 |
|
---|
| 4296 | #if _USE_FIND
|
---|
| 4297 | /*-----------------------------------------------------------------------*/
|
---|
| 4298 | /* Find Next File */
|
---|
| 4299 | /*-----------------------------------------------------------------------*/
|
---|
| 4300 |
|
---|
| 4301 | FRESULT f_findnext (
|
---|
| 4302 | DIR* dp, /* Pointer to the open directory object */
|
---|
| 4303 | FILINFO* fno /* Pointer to the file information structure */
|
---|
| 4304 | )
|
---|
| 4305 | {
|
---|
| 4306 | FRESULT res;
|
---|
| 4307 |
|
---|
| 4308 |
|
---|
| 4309 | for (;;) {
|
---|
| 4310 | res = f_readdir(dp, fno); /* Get a directory item */
|
---|
| 4311 | if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
|
---|
| 4312 | if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */
|
---|
| 4313 | #if _USE_LFN != 0 && _USE_FIND == 2
|
---|
| 4314 | if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */
|
---|
| 4315 | #endif
|
---|
| 4316 | }
|
---|
| 4317 | return res;
|
---|
| 4318 | }
|
---|
| 4319 |
|
---|
| 4320 |
|
---|
| 4321 |
|
---|
| 4322 | /*-----------------------------------------------------------------------*/
|
---|
| 4323 | /* Find First File */
|
---|
| 4324 | /*-----------------------------------------------------------------------*/
|
---|
| 4325 |
|
---|
| 4326 | FRESULT f_findfirst (
|
---|
| 4327 | DIR* dp, /* Pointer to the blank directory object */
|
---|
| 4328 | FILINFO* fno, /* Pointer to the file information structure */
|
---|
| 4329 | const TCHAR* path, /* Pointer to the directory to open */
|
---|
| 4330 | const TCHAR* pattern /* Pointer to the matching pattern */
|
---|
| 4331 | )
|
---|
| 4332 | {
|
---|
| 4333 | FRESULT res;
|
---|
| 4334 |
|
---|
| 4335 |
|
---|
| 4336 | dp->pat = pattern; /* Save pointer to pattern string */
|
---|
| 4337 | res = f_opendir(dp, path); /* Open the target directory */
|
---|
| 4338 | if (res == FR_OK) {
|
---|
| 4339 | res = f_findnext(dp, fno); /* Find the first item */
|
---|
| 4340 | }
|
---|
| 4341 | return res;
|
---|
| 4342 | }
|
---|
| 4343 |
|
---|
| 4344 | #endif /* _USE_FIND */
|
---|
| 4345 |
|
---|
| 4346 |
|
---|
| 4347 |
|
---|
| 4348 | #if _FS_MINIMIZE == 0
|
---|
| 4349 | /*-----------------------------------------------------------------------*/
|
---|
| 4350 | /* Get File Status */
|
---|
| 4351 | /*-----------------------------------------------------------------------*/
|
---|
| 4352 |
|
---|
| 4353 | FRESULT f_stat (
|
---|
| 4354 | const TCHAR* path, /* Pointer to the file path */
|
---|
| 4355 | FILINFO* fno /* Pointer to file information to return */
|
---|
| 4356 | )
|
---|
| 4357 | {
|
---|
| 4358 | FRESULT res;
|
---|
| 4359 | DIR dj;
|
---|
| 4360 | DEF_NAMBUF
|
---|
| 4361 |
|
---|
| 4362 |
|
---|
| 4363 | /* Get logical drive */
|
---|
| 4364 | res = find_volume(&path, &dj.obj.fs, 0);
|
---|
| 4365 | if (res == FR_OK) {
|
---|
| 4366 | INIT_NAMBUF(dj.obj.fs);
|
---|
| 4367 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 4368 | if (res == FR_OK) { /* Follow completed */
|
---|
| 4369 | if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */
|
---|
| 4370 | res = FR_INVALID_NAME;
|
---|
| 4371 | } else { /* Found an object */
|
---|
| 4372 | if (fno) get_fileinfo(&dj, fno);
|
---|
| 4373 | }
|
---|
| 4374 | }
|
---|
| 4375 | FREE_NAMBUF();
|
---|
| 4376 | }
|
---|
| 4377 |
|
---|
| 4378 | LEAVE_FF(dj.obj.fs, res);
|
---|
| 4379 | }
|
---|
| 4380 |
|
---|
| 4381 |
|
---|
| 4382 |
|
---|
| 4383 | #if !_FS_READONLY
|
---|
| 4384 | /*-----------------------------------------------------------------------*/
|
---|
| 4385 | /* Get Number of Free Clusters */
|
---|
| 4386 | /*-----------------------------------------------------------------------*/
|
---|
| 4387 |
|
---|
| 4388 | FRESULT f_getfree (
|
---|
| 4389 | const TCHAR* path, /* Path name of the logical drive number */
|
---|
| 4390 | DWORD* nclst, /* Pointer to a variable to return number of free clusters */
|
---|
| 4391 | FATFS** fatfs /* Pointer to return pointer to corresponding file system object */
|
---|
| 4392 | )
|
---|
| 4393 | {
|
---|
| 4394 | FRESULT res;
|
---|
| 4395 | FATFS *fs;
|
---|
| 4396 | DWORD nfree, clst, sect, stat;
|
---|
| 4397 | UINT i;
|
---|
| 4398 | BYTE *p;
|
---|
| 4399 | _FDID obj;
|
---|
| 4400 |
|
---|
| 4401 |
|
---|
| 4402 | /* Get logical drive */
|
---|
| 4403 | res = find_volume(&path, &fs, 0);
|
---|
| 4404 | if (res == FR_OK) {
|
---|
| 4405 | *fatfs = fs; /* Return ptr to the fs object */
|
---|
| 4406 | /* If free_clst is valid, return it without full cluster scan */
|
---|
| 4407 | if (fs->free_clst <= fs->n_fatent - 2) {
|
---|
| 4408 | *nclst = fs->free_clst;
|
---|
| 4409 | } else {
|
---|
| 4410 | /* Get number of free clusters */
|
---|
| 4411 | nfree = 0;
|
---|
| 4412 | if (fs->fs_type == FS_FAT12) { /* FAT12: Sector unalighed FAT entries */
|
---|
| 4413 | clst = 2; obj.fs = fs;
|
---|
| 4414 | do {
|
---|
| 4415 | stat = get_fat(&obj, clst);
|
---|
| 4416 | if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
|
---|
| 4417 | if (stat == 1) { res = FR_INT_ERR; break; }
|
---|
| 4418 | if (stat == 0) nfree++;
|
---|
| 4419 | } while (++clst < fs->n_fatent);
|
---|
| 4420 | } else {
|
---|
| 4421 | #if _FS_EXFAT
|
---|
| 4422 | if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan bitmap table */
|
---|
| 4423 | BYTE bm;
|
---|
| 4424 | UINT b;
|
---|
| 4425 |
|
---|
| 4426 | clst = fs->n_fatent - 2;
|
---|
| 4427 | sect = fs->database;
|
---|
| 4428 | i = 0;
|
---|
| 4429 | do {
|
---|
| 4430 | if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break;
|
---|
| 4431 | for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {
|
---|
| 4432 | if (!(bm & 1)) nfree++;
|
---|
| 4433 | bm >>= 1;
|
---|
| 4434 | }
|
---|
| 4435 | i = (i + 1) % SS(fs);
|
---|
| 4436 | } while (clst);
|
---|
| 4437 | } else
|
---|
| 4438 | #endif
|
---|
| 4439 | { /* FAT16/32: Sector alighed FAT entries */
|
---|
| 4440 | clst = fs->n_fatent; sect = fs->fatbase;
|
---|
| 4441 | i = 0; p = 0;
|
---|
| 4442 | do {
|
---|
| 4443 | if (i == 0) {
|
---|
| 4444 | res = move_window(fs, sect++);
|
---|
| 4445 | if (res != FR_OK) break;
|
---|
| 4446 | p = fs->win;
|
---|
| 4447 | i = SS(fs);
|
---|
| 4448 | }
|
---|
| 4449 | if (fs->fs_type == FS_FAT16) {
|
---|
| 4450 | if (ld_word(p) == 0) nfree++;
|
---|
| 4451 | p += 2; i -= 2;
|
---|
| 4452 | } else {
|
---|
| 4453 | if ((ld_dword(p) & 0x0FFFFFFF) == 0) nfree++;
|
---|
| 4454 | p += 4; i -= 4;
|
---|
| 4455 | }
|
---|
| 4456 | } while (--clst);
|
---|
| 4457 | }
|
---|
| 4458 | }
|
---|
| 4459 | *nclst = nfree; /* Return the free clusters */
|
---|
| 4460 | fs->free_clst = nfree; /* Now free_clst is valid */
|
---|
| 4461 | fs->fsi_flag |= 1; /* FSInfo is to be updated */
|
---|
| 4462 | }
|
---|
| 4463 | }
|
---|
| 4464 |
|
---|
| 4465 | LEAVE_FF(fs, res);
|
---|
| 4466 | }
|
---|
| 4467 |
|
---|
| 4468 |
|
---|
| 4469 |
|
---|
| 4470 |
|
---|
| 4471 | /*-----------------------------------------------------------------------*/
|
---|
| 4472 | /* Truncate File */
|
---|
| 4473 | /*-----------------------------------------------------------------------*/
|
---|
| 4474 |
|
---|
| 4475 | FRESULT f_truncate (
|
---|
| 4476 | FIL* fp /* Pointer to the file object */
|
---|
| 4477 | )
|
---|
| 4478 | {
|
---|
| 4479 | FRESULT res;
|
---|
| 4480 | FATFS *fs;
|
---|
| 4481 | DWORD ncl;
|
---|
| 4482 |
|
---|
| 4483 |
|
---|
| 4484 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 4485 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
|
---|
| 4486 | if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
|
---|
| 4487 |
|
---|
| 4488 | if (fp->fptr < fp->obj.objsize) { /* Process when fptr is not on the eof */
|
---|
| 4489 | if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
|
---|
| 4490 | res = remove_chain(&fp->obj, fp->obj.sclust, 0);
|
---|
| 4491 | fp->obj.sclust = 0;
|
---|
| 4492 | } else { /* When truncate a part of the file, remove remaining clusters */
|
---|
| 4493 | ncl = get_fat(&fp->obj, fp->clust);
|
---|
| 4494 | res = FR_OK;
|
---|
| 4495 | if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
|
---|
| 4496 | if (ncl == 1) res = FR_INT_ERR;
|
---|
| 4497 | if (res == FR_OK && ncl < fs->n_fatent) {
|
---|
| 4498 | res = remove_chain(&fp->obj, ncl, fp->clust);
|
---|
| 4499 | }
|
---|
| 4500 | }
|
---|
| 4501 | fp->obj.objsize = fp->fptr; /* Set file size to current R/W point */
|
---|
| 4502 | fp->flag |= FA_MODIFIED;
|
---|
| 4503 | #if !_FS_TINY
|
---|
| 4504 | if (res == FR_OK && (fp->flag & FA_DIRTY)) {
|
---|
| 4505 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {
|
---|
| 4506 | res = FR_DISK_ERR;
|
---|
| 4507 | } else {
|
---|
| 4508 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 4509 | }
|
---|
| 4510 | }
|
---|
| 4511 | #endif
|
---|
| 4512 | if (res != FR_OK) ABORT(fs, res);
|
---|
| 4513 | }
|
---|
| 4514 |
|
---|
| 4515 | LEAVE_FF(fs, res);
|
---|
| 4516 | }
|
---|
| 4517 |
|
---|
| 4518 |
|
---|
| 4519 |
|
---|
| 4520 |
|
---|
| 4521 | /*-----------------------------------------------------------------------*/
|
---|
| 4522 | /* Delete a File/Directory */
|
---|
| 4523 | /*-----------------------------------------------------------------------*/
|
---|
| 4524 |
|
---|
| 4525 | FRESULT f_unlink (
|
---|
| 4526 | const TCHAR* path /* Pointer to the file or directory path */
|
---|
| 4527 | )
|
---|
| 4528 | {
|
---|
| 4529 | FRESULT res;
|
---|
| 4530 | DIR dj, sdj;
|
---|
| 4531 | DWORD dclst = 0;
|
---|
| 4532 | FATFS *fs;
|
---|
| 4533 | #if _FS_EXFAT
|
---|
| 4534 | _FDID obj;
|
---|
| 4535 | #endif
|
---|
| 4536 | DEF_NAMBUF
|
---|
| 4537 |
|
---|
| 4538 |
|
---|
| 4539 | /* Get logical drive */
|
---|
| 4540 | res = find_volume(&path, &fs, FA_WRITE);
|
---|
| 4541 | dj.obj.fs = fs;
|
---|
| 4542 | if (res == FR_OK) {
|
---|
| 4543 | INIT_NAMBUF(fs);
|
---|
| 4544 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 4545 | if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {
|
---|
| 4546 | res = FR_INVALID_NAME; /* Cannot remove dot entry */
|
---|
| 4547 | }
|
---|
| 4548 | #if _FS_LOCK != 0
|
---|
| 4549 | if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */
|
---|
| 4550 | #endif
|
---|
| 4551 | if (res == FR_OK) { /* The object is accessible */
|
---|
| 4552 | if (dj.fn[NSFLAG] & NS_NONAME) {
|
---|
| 4553 | res = FR_INVALID_NAME; /* Cannot remove the origin directory */
|
---|
| 4554 | } else {
|
---|
| 4555 | if (dj.obj.attr & AM_RDO) {
|
---|
| 4556 | res = FR_DENIED; /* Cannot remove R/O object */
|
---|
| 4557 | }
|
---|
| 4558 | }
|
---|
| 4559 | if (res == FR_OK) {
|
---|
| 4560 | #if _FS_EXFAT
|
---|
| 4561 | obj.fs = fs;
|
---|
| 4562 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4563 | obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus);
|
---|
| 4564 | obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
|
---|
| 4565 | obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
|
---|
| 4566 | } else
|
---|
| 4567 | #endif
|
---|
| 4568 | {
|
---|
| 4569 | dclst = ld_clust(fs, dj.dir);
|
---|
| 4570 | }
|
---|
| 4571 | if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */
|
---|
| 4572 | #if _FS_RPATH != 0
|
---|
| 4573 | if (dclst == fs->cdir) { /* Is it the current directory? */
|
---|
| 4574 | res = FR_DENIED;
|
---|
| 4575 | } else
|
---|
| 4576 | #endif
|
---|
| 4577 | {
|
---|
| 4578 | sdj.obj.fs = fs; /* Open the sub-directory */
|
---|
| 4579 | sdj.obj.sclust = dclst;
|
---|
| 4580 | #if _FS_EXFAT
|
---|
| 4581 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4582 | sdj.obj.objsize = obj.objsize;
|
---|
| 4583 | sdj.obj.stat = obj.stat;
|
---|
| 4584 | }
|
---|
| 4585 | #endif
|
---|
| 4586 | res = dir_sdi(&sdj, 0);
|
---|
| 4587 | if (res == FR_OK) {
|
---|
| 4588 | res = dir_read(&sdj, 0); /* Read an item */
|
---|
| 4589 | if (res == FR_OK) res = FR_DENIED; /* Not empty? */
|
---|
| 4590 | if (res == FR_NO_FILE) res = FR_OK; /* Empty? */
|
---|
| 4591 | }
|
---|
| 4592 | }
|
---|
| 4593 | }
|
---|
| 4594 | }
|
---|
| 4595 | if (res == FR_OK) {
|
---|
| 4596 | res = dir_remove(&dj); /* Remove the directory entry */
|
---|
| 4597 | if (res == FR_OK && dclst) { /* Remove the cluster chain if exist */
|
---|
| 4598 | #if _FS_EXFAT
|
---|
| 4599 | res = remove_chain(&obj, dclst, 0);
|
---|
| 4600 | #else
|
---|
| 4601 | res = remove_chain(&dj.obj, dclst, 0);
|
---|
| 4602 | #endif
|
---|
| 4603 | }
|
---|
| 4604 | if (res == FR_OK) res = sync_fs(fs);
|
---|
| 4605 | }
|
---|
| 4606 | }
|
---|
| 4607 | FREE_NAMBUF();
|
---|
| 4608 | }
|
---|
| 4609 |
|
---|
| 4610 | LEAVE_FF(fs, res);
|
---|
| 4611 | }
|
---|
| 4612 |
|
---|
| 4613 |
|
---|
| 4614 |
|
---|
| 4615 |
|
---|
| 4616 | /*-----------------------------------------------------------------------*/
|
---|
| 4617 | /* Create a Directory */
|
---|
| 4618 | /*-----------------------------------------------------------------------*/
|
---|
| 4619 |
|
---|
| 4620 | FRESULT f_mkdir (
|
---|
| 4621 | const TCHAR* path /* Pointer to the directory path */
|
---|
| 4622 | )
|
---|
| 4623 | {
|
---|
| 4624 | FRESULT res;
|
---|
| 4625 | DIR dj;
|
---|
| 4626 | FATFS *fs;
|
---|
| 4627 | BYTE *dir;
|
---|
| 4628 | UINT n;
|
---|
| 4629 | DWORD dsc, dcl, pcl, tm;
|
---|
| 4630 | DEF_NAMBUF
|
---|
| 4631 |
|
---|
| 4632 |
|
---|
| 4633 | /* Get logical drive */
|
---|
| 4634 | res = find_volume(&path, &fs, FA_WRITE);
|
---|
| 4635 | dj.obj.fs = fs;
|
---|
| 4636 | if (res == FR_OK) {
|
---|
| 4637 | INIT_NAMBUF(fs);
|
---|
| 4638 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 4639 | if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
|
---|
| 4640 | if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) {
|
---|
| 4641 | res = FR_INVALID_NAME;
|
---|
| 4642 | }
|
---|
| 4643 | if (res == FR_NO_FILE) { /* Can create a new directory */
|
---|
| 4644 | dcl = create_chain(&dj.obj, 0); /* Allocate a cluster for the new directory table */
|
---|
| 4645 | dj.obj.objsize = (DWORD)fs->csize * SS(fs);
|
---|
| 4646 | res = FR_OK;
|
---|
| 4647 | if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
|
---|
| 4648 | if (dcl == 1) res = FR_INT_ERR;
|
---|
| 4649 | if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
|
---|
| 4650 | if (res == FR_OK) res = sync_window(fs); /* Flush FAT */
|
---|
| 4651 | tm = GET_FATTIME();
|
---|
| 4652 | if (res == FR_OK) { /* Initialize the new directory table */
|
---|
| 4653 | dsc = clust2sect(fs, dcl);
|
---|
| 4654 | dir = fs->win;
|
---|
| 4655 | mem_set(dir, 0, SS(fs));
|
---|
| 4656 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
|
---|
| 4657 | mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
|
---|
| 4658 | dir[DIR_Name] = '.';
|
---|
| 4659 | dir[DIR_Attr] = AM_DIR;
|
---|
| 4660 | st_dword(dir + DIR_ModTime, tm);
|
---|
| 4661 | st_clust(fs, dir, dcl);
|
---|
| 4662 | mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */
|
---|
| 4663 | dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
|
---|
| 4664 | if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0;
|
---|
| 4665 | st_clust(fs, dir + SZDIRE, pcl);
|
---|
| 4666 | }
|
---|
| 4667 | for (n = fs->csize; n; n--) { /* Write dot entries and clear following sectors */
|
---|
| 4668 | fs->winsect = dsc++;
|
---|
| 4669 | fs->wflag = 1;
|
---|
| 4670 | res = sync_window(fs);
|
---|
| 4671 | if (res != FR_OK) break;
|
---|
| 4672 | mem_set(dir, 0, SS(fs));
|
---|
| 4673 | }
|
---|
| 4674 | }
|
---|
| 4675 | if (res == FR_OK) {
|
---|
| 4676 | res = dir_register(&dj); /* Register the object to the directoy */
|
---|
| 4677 | }
|
---|
| 4678 | if (res == FR_OK) {
|
---|
| 4679 | #if _FS_EXFAT
|
---|
| 4680 | if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */
|
---|
| 4681 | st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */
|
---|
| 4682 | st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */
|
---|
| 4683 | st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize); /* File size needs to be valid */
|
---|
| 4684 | st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize);
|
---|
| 4685 | fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag (contiguous) */
|
---|
| 4686 | fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */
|
---|
| 4687 | res = store_xdir(&dj);
|
---|
| 4688 | } else
|
---|
| 4689 | #endif
|
---|
| 4690 | {
|
---|
| 4691 | dir = dj.dir;
|
---|
| 4692 | st_dword(dir + DIR_ModTime, tm); /* Created time */
|
---|
| 4693 | st_clust(fs, dir, dcl); /* Table start cluster */
|
---|
| 4694 | dir[DIR_Attr] = AM_DIR; /* Attribute */
|
---|
| 4695 | fs->wflag = 1;
|
---|
| 4696 | }
|
---|
| 4697 | if (res == FR_OK) {
|
---|
| 4698 | res = sync_fs(fs);
|
---|
| 4699 | }
|
---|
| 4700 | } else {
|
---|
| 4701 | remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */
|
---|
| 4702 | }
|
---|
| 4703 | }
|
---|
| 4704 | FREE_NAMBUF();
|
---|
| 4705 | }
|
---|
| 4706 |
|
---|
| 4707 | LEAVE_FF(fs, res);
|
---|
| 4708 | }
|
---|
| 4709 |
|
---|
| 4710 |
|
---|
| 4711 |
|
---|
| 4712 |
|
---|
| 4713 | /*-----------------------------------------------------------------------*/
|
---|
| 4714 | /* Rename a File/Directory */
|
---|
| 4715 | /*-----------------------------------------------------------------------*/
|
---|
| 4716 |
|
---|
| 4717 | FRESULT f_rename (
|
---|
| 4718 | const TCHAR* path_old, /* Pointer to the object name to be renamed */
|
---|
| 4719 | const TCHAR* path_new /* Pointer to the new name */
|
---|
| 4720 | )
|
---|
| 4721 | {
|
---|
| 4722 | FRESULT res;
|
---|
| 4723 | DIR djo, djn;
|
---|
| 4724 | FATFS *fs;
|
---|
| 4725 | BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir;
|
---|
| 4726 | DWORD dw;
|
---|
| 4727 | DEF_NAMBUF
|
---|
| 4728 |
|
---|
| 4729 |
|
---|
| 4730 | get_ldnumber(&path_new); /* Snip drive number of new name off */
|
---|
| 4731 | res = find_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */
|
---|
| 4732 | if (res == FR_OK) {
|
---|
| 4733 | djo.obj.fs = fs;
|
---|
| 4734 | INIT_NAMBUF(fs);
|
---|
| 4735 | res = follow_path(&djo, path_old); /* Check old object */
|
---|
| 4736 | if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */
|
---|
| 4737 | #if _FS_LOCK != 0
|
---|
| 4738 | if (res == FR_OK) {
|
---|
| 4739 | res = chk_lock(&djo, 2);
|
---|
| 4740 | }
|
---|
| 4741 | #endif
|
---|
| 4742 | if (res == FR_OK) { /* Object to be renamed is found */
|
---|
| 4743 | #if _FS_EXFAT
|
---|
| 4744 | if (fs->fs_type == FS_EXFAT) { /* At exFAT */
|
---|
| 4745 | BYTE nf, nn;
|
---|
| 4746 | WORD nh;
|
---|
| 4747 |
|
---|
| 4748 | mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */
|
---|
| 4749 | mem_cpy(&djn, &djo, sizeof djo);
|
---|
| 4750 | res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
|
---|
| 4751 | if (res == FR_OK) { /* Is new name already in use by any other object? */
|
---|
| 4752 | res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
|
---|
| 4753 | }
|
---|
| 4754 | if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
|
---|
| 4755 | res = dir_register(&djn); /* Register the new entry */
|
---|
| 4756 | if (res == FR_OK) {
|
---|
| 4757 | nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];
|
---|
| 4758 | nh = ld_word(fs->dirbuf + XDIR_NameHash);
|
---|
| 4759 | mem_cpy(fs->dirbuf, buf, SZDIRE * 2);
|
---|
| 4760 | fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;
|
---|
| 4761 | st_word(fs->dirbuf + XDIR_NameHash, nh);
|
---|
| 4762 | /* Start of critical section where an interruption can cause a cross-link */
|
---|
| 4763 | res = store_xdir(&djn);
|
---|
| 4764 | }
|
---|
| 4765 | }
|
---|
| 4766 | } else
|
---|
| 4767 | #endif
|
---|
| 4768 | { /* At FAT12/FAT16/FAT32 */
|
---|
| 4769 | mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about the object except name */
|
---|
| 4770 | mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */
|
---|
| 4771 | res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
|
---|
| 4772 | if (res == FR_OK) { /* Is new name already in use by any other object? */
|
---|
| 4773 | res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
|
---|
| 4774 | }
|
---|
| 4775 | if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
|
---|
| 4776 | res = dir_register(&djn); /* Register the new entry */
|
---|
| 4777 | if (res == FR_OK) {
|
---|
| 4778 | dir = djn.dir; /* Copy information about object except name */
|
---|
| 4779 | mem_cpy(dir + 13, buf + 2, 19);
|
---|
| 4780 | dir[DIR_Attr] = buf[0] | AM_ARC;
|
---|
| 4781 | fs->wflag = 1;
|
---|
| 4782 | if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */
|
---|
| 4783 | dw = clust2sect(fs, ld_clust(fs, dir));
|
---|
| 4784 | if (!dw) {
|
---|
| 4785 | res = FR_INT_ERR;
|
---|
| 4786 | } else {
|
---|
| 4787 | /* Start of critical section where an interruption can cause a cross-link */
|
---|
| 4788 | res = move_window(fs, dw);
|
---|
| 4789 | dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */
|
---|
| 4790 | if (res == FR_OK && dir[1] == '.') {
|
---|
| 4791 | st_clust(fs, dir, djn.obj.sclust);
|
---|
| 4792 | fs->wflag = 1;
|
---|
| 4793 | }
|
---|
| 4794 | }
|
---|
| 4795 | }
|
---|
| 4796 | }
|
---|
| 4797 | }
|
---|
| 4798 | }
|
---|
| 4799 | if (res == FR_OK) {
|
---|
| 4800 | res = dir_remove(&djo); /* Remove old entry */
|
---|
| 4801 | if (res == FR_OK) {
|
---|
| 4802 | res = sync_fs(fs);
|
---|
| 4803 | }
|
---|
| 4804 | }
|
---|
| 4805 | /* End of the critical section */
|
---|
| 4806 | }
|
---|
| 4807 | FREE_NAMBUF();
|
---|
| 4808 | }
|
---|
| 4809 |
|
---|
| 4810 | LEAVE_FF(fs, res);
|
---|
| 4811 | }
|
---|
| 4812 |
|
---|
| 4813 | #endif /* !_FS_READONLY */
|
---|
| 4814 | #endif /* _FS_MINIMIZE == 0 */
|
---|
| 4815 | #endif /* _FS_MINIMIZE <= 1 */
|
---|
| 4816 | #endif /* _FS_MINIMIZE <= 2 */
|
---|
| 4817 |
|
---|
| 4818 |
|
---|
| 4819 |
|
---|
| 4820 | #if _USE_CHMOD && !_FS_READONLY
|
---|
| 4821 | /*-----------------------------------------------------------------------*/
|
---|
| 4822 | /* Change Attribute */
|
---|
| 4823 | /*-----------------------------------------------------------------------*/
|
---|
| 4824 |
|
---|
| 4825 | FRESULT f_chmod (
|
---|
| 4826 | const TCHAR* path, /* Pointer to the file path */
|
---|
| 4827 | BYTE attr, /* Attribute bits */
|
---|
| 4828 | BYTE mask /* Attribute mask to change */
|
---|
| 4829 | )
|
---|
| 4830 | {
|
---|
| 4831 | FRESULT res;
|
---|
| 4832 | DIR dj;
|
---|
| 4833 | FATFS *fs;
|
---|
| 4834 | DEF_NAMBUF
|
---|
| 4835 |
|
---|
| 4836 |
|
---|
| 4837 | res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */
|
---|
| 4838 | dj.obj.fs = fs;
|
---|
| 4839 | if (res == FR_OK) {
|
---|
| 4840 | INIT_NAMBUF(fs);
|
---|
| 4841 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 4842 | if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
|
---|
| 4843 | if (res == FR_OK) {
|
---|
| 4844 | mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
|
---|
| 4845 | #if _FS_EXFAT
|
---|
| 4846 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4847 | fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */
|
---|
| 4848 | res = store_xdir(&dj);
|
---|
| 4849 | } else
|
---|
| 4850 | #endif
|
---|
| 4851 | {
|
---|
| 4852 | dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
|
---|
| 4853 | fs->wflag = 1;
|
---|
| 4854 | }
|
---|
| 4855 | if (res == FR_OK) {
|
---|
| 4856 | res = sync_fs(fs);
|
---|
| 4857 | }
|
---|
| 4858 | }
|
---|
| 4859 | FREE_NAMBUF();
|
---|
| 4860 | }
|
---|
| 4861 |
|
---|
| 4862 | LEAVE_FF(fs, res);
|
---|
| 4863 | }
|
---|
| 4864 |
|
---|
| 4865 |
|
---|
| 4866 |
|
---|
| 4867 |
|
---|
| 4868 | /*-----------------------------------------------------------------------*/
|
---|
| 4869 | /* Change Timestamp */
|
---|
| 4870 | /*-----------------------------------------------------------------------*/
|
---|
| 4871 |
|
---|
| 4872 | FRESULT f_utime (
|
---|
| 4873 | const TCHAR* path, /* Pointer to the file/directory name */
|
---|
| 4874 | const FILINFO* fno /* Pointer to the time stamp to be set */
|
---|
| 4875 | )
|
---|
| 4876 | {
|
---|
| 4877 | FRESULT res;
|
---|
| 4878 | DIR dj;
|
---|
| 4879 | FATFS *fs;
|
---|
| 4880 | DEF_NAMBUF
|
---|
| 4881 |
|
---|
| 4882 |
|
---|
| 4883 | res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */
|
---|
| 4884 | dj.obj.fs = fs;
|
---|
| 4885 | if (res == FR_OK) {
|
---|
| 4886 | INIT_NAMBUF(fs);
|
---|
| 4887 | res = follow_path(&dj, path); /* Follow the file path */
|
---|
| 4888 | if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
|
---|
| 4889 | if (res == FR_OK) {
|
---|
| 4890 | #if _FS_EXFAT
|
---|
| 4891 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4892 | st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
|
---|
| 4893 | res = store_xdir(&dj);
|
---|
| 4894 | } else
|
---|
| 4895 | #endif
|
---|
| 4896 | {
|
---|
| 4897 | st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
|
---|
| 4898 | fs->wflag = 1;
|
---|
| 4899 | }
|
---|
| 4900 | if (res == FR_OK) {
|
---|
| 4901 | res = sync_fs(fs);
|
---|
| 4902 | }
|
---|
| 4903 | }
|
---|
| 4904 | FREE_NAMBUF();
|
---|
| 4905 | }
|
---|
| 4906 |
|
---|
| 4907 | LEAVE_FF(fs, res);
|
---|
| 4908 | }
|
---|
| 4909 |
|
---|
| 4910 | #endif /* _USE_CHMOD && !_FS_READONLY */
|
---|
| 4911 |
|
---|
| 4912 |
|
---|
| 4913 |
|
---|
| 4914 | #if _USE_LABEL
|
---|
| 4915 | /*-----------------------------------------------------------------------*/
|
---|
| 4916 | /* Get Volume Label */
|
---|
| 4917 | /*-----------------------------------------------------------------------*/
|
---|
| 4918 |
|
---|
| 4919 | FRESULT f_getlabel (
|
---|
| 4920 | const TCHAR* path, /* Path name of the logical drive number */
|
---|
| 4921 | TCHAR* label, /* Pointer to a buffer to return the volume label */
|
---|
| 4922 | DWORD* vsn /* Pointer to a variable to return the volume serial number */
|
---|
| 4923 | )
|
---|
| 4924 | {
|
---|
| 4925 | FRESULT res;
|
---|
| 4926 | DIR dj;
|
---|
| 4927 | FATFS *fs;
|
---|
| 4928 | UINT si, di;
|
---|
| 4929 | #if _LFN_UNICODE || _FS_EXFAT
|
---|
| 4930 | WCHAR w;
|
---|
| 4931 | #endif
|
---|
| 4932 |
|
---|
| 4933 | /* Get logical drive */
|
---|
| 4934 | res = find_volume(&path, &fs, 0);
|
---|
| 4935 |
|
---|
| 4936 | /* Get volume label */
|
---|
| 4937 | if (res == FR_OK && label) {
|
---|
| 4938 | dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */
|
---|
| 4939 | res = dir_sdi(&dj, 0);
|
---|
| 4940 | if (res == FR_OK) {
|
---|
| 4941 | res = dir_read(&dj, 1); /* Find a volume label entry */
|
---|
| 4942 | if (res == FR_OK) {
|
---|
| 4943 | #if _FS_EXFAT
|
---|
| 4944 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 4945 | for (si = di = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */
|
---|
| 4946 | w = ld_word(dj.dir + XDIR_Label + si * 2);
|
---|
| 4947 | #if _LFN_UNICODE
|
---|
| 4948 | label[di++] = w;
|
---|
| 4949 | #else
|
---|
| 4950 | w = ff_convert(w, 0); /* Unicode -> OEM */
|
---|
| 4951 | if (w == 0) w = '?'; /* Replace wrong character */
|
---|
| 4952 | if (_DF1S && w >= 0x100) label[di++] = (char)(w >> 8);
|
---|
| 4953 | label[di++] = (char)w;
|
---|
| 4954 | #endif
|
---|
| 4955 | }
|
---|
| 4956 | label[di] = 0;
|
---|
| 4957 | } else
|
---|
| 4958 | #endif
|
---|
| 4959 | {
|
---|
| 4960 | si = di = 0; /* Extract volume label from AM_VOL entry with code comversion */
|
---|
| 4961 | do {
|
---|
| 4962 | #if _LFN_UNICODE
|
---|
| 4963 | w = (si < 11) ? dj.dir[si++] : ' ';
|
---|
| 4964 | if (IsDBCS1(w) && si < 11 && IsDBCS2(dj.dir[si])) {
|
---|
| 4965 | w = w << 8 | dj.dir[si++];
|
---|
| 4966 | }
|
---|
| 4967 | label[di++] = ff_convert(w, 1); /* OEM -> Unicode */
|
---|
| 4968 | #else
|
---|
| 4969 | label[di++] = dj.dir[si++];
|
---|
| 4970 | #endif
|
---|
| 4971 | } while (di < 11);
|
---|
| 4972 | do { /* Truncate trailing spaces */
|
---|
| 4973 | label[di] = 0;
|
---|
| 4974 | if (di == 0) break;
|
---|
| 4975 | } while (label[--di] == ' ');
|
---|
| 4976 | }
|
---|
| 4977 | }
|
---|
| 4978 | }
|
---|
| 4979 | if (res == FR_NO_FILE) { /* No label entry and return nul string */
|
---|
| 4980 | label[0] = 0;
|
---|
| 4981 | res = FR_OK;
|
---|
| 4982 | }
|
---|
| 4983 | }
|
---|
| 4984 |
|
---|
| 4985 | /* Get volume serial number */
|
---|
| 4986 | if (res == FR_OK && vsn) {
|
---|
| 4987 | res = move_window(fs, fs->volbase);
|
---|
| 4988 | if (res == FR_OK) {
|
---|
| 4989 | switch (fs->fs_type) {
|
---|
| 4990 | case FS_EXFAT:
|
---|
| 4991 | di = BPB_VolIDEx; break;
|
---|
| 4992 |
|
---|
| 4993 | case FS_FAT32:
|
---|
| 4994 | di = BS_VolID32; break;
|
---|
| 4995 |
|
---|
| 4996 | default:
|
---|
| 4997 | di = BS_VolID;
|
---|
| 4998 | }
|
---|
| 4999 | *vsn = ld_dword(fs->win + di);
|
---|
| 5000 | }
|
---|
| 5001 | }
|
---|
| 5002 |
|
---|
| 5003 | LEAVE_FF(fs, res);
|
---|
| 5004 | }
|
---|
| 5005 |
|
---|
| 5006 |
|
---|
| 5007 |
|
---|
| 5008 | #if !_FS_READONLY
|
---|
| 5009 | /*-----------------------------------------------------------------------*/
|
---|
| 5010 | /* Set Volume Label */
|
---|
| 5011 | /*-----------------------------------------------------------------------*/
|
---|
| 5012 |
|
---|
| 5013 | FRESULT f_setlabel (
|
---|
| 5014 | const TCHAR* label /* Pointer to the volume label to set */
|
---|
| 5015 | )
|
---|
| 5016 | {
|
---|
| 5017 | FRESULT res;
|
---|
| 5018 | DIR dj;
|
---|
| 5019 | FATFS *fs;
|
---|
| 5020 | BYTE dirvn[22];
|
---|
| 5021 | UINT i, j, slen;
|
---|
| 5022 | WCHAR w;
|
---|
| 5023 | static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F";
|
---|
| 5024 |
|
---|
| 5025 |
|
---|
| 5026 | /* Get logical drive */
|
---|
| 5027 | res = find_volume(&label, &fs, FA_WRITE);
|
---|
| 5028 | if (res != FR_OK) LEAVE_FF(fs, res);
|
---|
| 5029 | dj.obj.fs = fs;
|
---|
| 5030 |
|
---|
| 5031 | /* Get length of given volume label */
|
---|
| 5032 | for (slen = 0; (UINT)label[slen] >= ' '; slen++) ; /* Get name length */
|
---|
| 5033 |
|
---|
| 5034 | #if _FS_EXFAT
|
---|
| 5035 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
|
---|
| 5036 | for (i = j = 0; i < slen; ) { /* Create volume label in directory form */
|
---|
| 5037 | w = label[i++];
|
---|
| 5038 | #if !_LFN_UNICODE
|
---|
| 5039 | if (IsDBCS1(w)) {
|
---|
| 5040 | w = (i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
|
---|
| 5041 | }
|
---|
| 5042 | w = ff_convert(w, 1);
|
---|
| 5043 | #endif
|
---|
| 5044 | if (w == 0 || chk_chr(badchr, w) || j == 22) { /* Check validity check validity of the volume label */
|
---|
| 5045 | LEAVE_FF(fs, FR_INVALID_NAME);
|
---|
| 5046 | }
|
---|
| 5047 | st_word(dirvn + j, w); j += 2;
|
---|
| 5048 | }
|
---|
| 5049 | slen = j;
|
---|
| 5050 | } else
|
---|
| 5051 | #endif
|
---|
| 5052 | { /* On the FAT12/16/32 volume */
|
---|
| 5053 | for ( ; slen && label[slen - 1] == ' '; slen--) ; /* Remove trailing spaces */
|
---|
| 5054 | if (slen) { /* Is there a volume label to be set? */
|
---|
| 5055 | dirvn[0] = 0; i = j = 0; /* Create volume label in directory form */
|
---|
| 5056 | do {
|
---|
| 5057 | #if _LFN_UNICODE
|
---|
| 5058 | w = ff_convert(ff_wtoupper(label[i++]), 0);
|
---|
| 5059 | #else
|
---|
| 5060 | w = (BYTE)label[i++];
|
---|
| 5061 | if (IsDBCS1(w)) {
|
---|
| 5062 | w = (j < 10 && i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
|
---|
| 5063 | }
|
---|
| 5064 | #if _USE_LFN != 0
|
---|
| 5065 | w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
|
---|
| 5066 | #else
|
---|
| 5067 | if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */
|
---|
| 5068 | #ifdef _EXCVT
|
---|
| 5069 | if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
|
---|
| 5070 | #else
|
---|
| 5071 | if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */
|
---|
| 5072 | #endif
|
---|
| 5073 | #endif
|
---|
| 5074 | #endif
|
---|
| 5075 | if (w == 0 || chk_chr(badchr, w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */
|
---|
| 5076 | LEAVE_FF(fs, FR_INVALID_NAME);
|
---|
| 5077 | }
|
---|
| 5078 | if (w >= 0x100) dirvn[j++] = (BYTE)(w >> 8);
|
---|
| 5079 | dirvn[j++] = (BYTE)w;
|
---|
| 5080 | } while (i < slen);
|
---|
| 5081 | while (j < 11) dirvn[j++] = ' '; /* Fill remaining name field */
|
---|
| 5082 | if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
|
---|
| 5083 | }
|
---|
| 5084 | }
|
---|
| 5085 |
|
---|
| 5086 | /* Set volume label */
|
---|
| 5087 | dj.obj.sclust = 0; /* Open root directory */
|
---|
| 5088 | res = dir_sdi(&dj, 0);
|
---|
| 5089 | if (res == FR_OK) {
|
---|
| 5090 | res = dir_read(&dj, 1); /* Get volume label entry */
|
---|
| 5091 | if (res == FR_OK) {
|
---|
| 5092 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
|
---|
| 5093 | dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2); /* Change the volume label */
|
---|
| 5094 | mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
|
---|
| 5095 | } else {
|
---|
| 5096 | if (slen) {
|
---|
| 5097 | mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */
|
---|
| 5098 | } else {
|
---|
| 5099 | dj.dir[DIR_Name] = DDEM; /* Remove the volume label */
|
---|
| 5100 | }
|
---|
| 5101 | }
|
---|
| 5102 | fs->wflag = 1;
|
---|
| 5103 | res = sync_fs(fs);
|
---|
| 5104 | } else { /* No volume label entry is found or error */
|
---|
| 5105 | if (res == FR_NO_FILE) {
|
---|
| 5106 | res = FR_OK;
|
---|
| 5107 | if (slen) { /* Create a volume label entry */
|
---|
| 5108 | res = dir_alloc(&dj, 1); /* Allocate an entry */
|
---|
| 5109 | if (res == FR_OK) {
|
---|
| 5110 | mem_set(dj.dir, 0, SZDIRE); /* Clear the entry */
|
---|
| 5111 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
|
---|
| 5112 | dj.dir[XDIR_Type] = 0x83; /* Create 83 entry */
|
---|
| 5113 | dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2);
|
---|
| 5114 | mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
|
---|
| 5115 | } else {
|
---|
| 5116 | dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */
|
---|
| 5117 | mem_cpy(dj.dir, dirvn, 11);
|
---|
| 5118 | }
|
---|
| 5119 | fs->wflag = 1;
|
---|
| 5120 | res = sync_fs(fs);
|
---|
| 5121 | }
|
---|
| 5122 | }
|
---|
| 5123 | }
|
---|
| 5124 | }
|
---|
| 5125 | }
|
---|
| 5126 |
|
---|
| 5127 | LEAVE_FF(fs, res);
|
---|
| 5128 | }
|
---|
| 5129 |
|
---|
| 5130 | #endif /* !_FS_READONLY */
|
---|
| 5131 | #endif /* _USE_LABEL */
|
---|
| 5132 |
|
---|
| 5133 |
|
---|
| 5134 |
|
---|
| 5135 | #if _USE_EXPAND && !_FS_READONLY
|
---|
| 5136 | /*-----------------------------------------------------------------------*/
|
---|
| 5137 | /* Allocate a Contiguous Blocks to the File */
|
---|
| 5138 | /*-----------------------------------------------------------------------*/
|
---|
| 5139 |
|
---|
| 5140 | FRESULT f_expand (
|
---|
| 5141 | FIL* fp, /* Pointer to the file object */
|
---|
| 5142 | FSIZE_t fsz, /* File size to be expanded to */
|
---|
| 5143 | BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */
|
---|
| 5144 | )
|
---|
| 5145 | {
|
---|
| 5146 | FRESULT res;
|
---|
| 5147 | FATFS *fs;
|
---|
| 5148 | DWORD n, clst, stcl, scl, ncl, tcl, lclst;
|
---|
| 5149 |
|
---|
| 5150 |
|
---|
| 5151 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 5152 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
|
---|
| 5153 | if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);
|
---|
| 5154 | #if _FS_EXFAT
|
---|
| 5155 | if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */
|
---|
| 5156 | #endif
|
---|
| 5157 | n = (DWORD)fs->csize * SS(fs); /* Cluster size */
|
---|
| 5158 | tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */
|
---|
| 5159 | stcl = fs->last_clst; lclst = 0;
|
---|
| 5160 | if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;
|
---|
| 5161 |
|
---|
| 5162 | #if _FS_EXFAT
|
---|
| 5163 | if (fs->fs_type == FS_EXFAT) {
|
---|
| 5164 | scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */
|
---|
| 5165 | if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */
|
---|
| 5166 | if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;
|
---|
| 5167 | if (res == FR_OK) { /* A contiguous free area is found */
|
---|
| 5168 | if (opt) { /* Allocate it now */
|
---|
| 5169 | res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */
|
---|
| 5170 | lclst = scl + tcl - 1;
|
---|
| 5171 | } else { /* Set it as suggested point for next allocation */
|
---|
| 5172 | lclst = scl - 1;
|
---|
| 5173 | }
|
---|
| 5174 | }
|
---|
| 5175 | } else
|
---|
| 5176 | #endif
|
---|
| 5177 | {
|
---|
| 5178 | scl = clst = stcl; ncl = 0;
|
---|
| 5179 | for (;;) { /* Find a contiguous cluster block */
|
---|
| 5180 | n = get_fat(&fp->obj, clst);
|
---|
| 5181 | if (++clst >= fs->n_fatent) clst = 2;
|
---|
| 5182 | if (n == 1) { res = FR_INT_ERR; break; }
|
---|
| 5183 | if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
|
---|
| 5184 | if (n == 0) { /* Is it a free cluster? */
|
---|
| 5185 | if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */
|
---|
| 5186 | } else {
|
---|
| 5187 | scl = clst; ncl = 0; /* Not a free cluster */
|
---|
| 5188 | }
|
---|
| 5189 | if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */
|
---|
| 5190 | }
|
---|
| 5191 | if (res == FR_OK) { /* A contiguous free area is found */
|
---|
| 5192 | if (opt) { /* Allocate it now */
|
---|
| 5193 | for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */
|
---|
| 5194 | res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);
|
---|
| 5195 | if (res != FR_OK) break;
|
---|
| 5196 | lclst = clst;
|
---|
| 5197 | }
|
---|
| 5198 | } else { /* Set it as suggested point for next allocation */
|
---|
| 5199 | lclst = scl - 1;
|
---|
| 5200 | }
|
---|
| 5201 | }
|
---|
| 5202 | }
|
---|
| 5203 |
|
---|
| 5204 | if (res == FR_OK) {
|
---|
| 5205 | fs->last_clst = lclst; /* Set suggested start cluster to start next */
|
---|
| 5206 | if (opt) { /* Is it allocated now? */
|
---|
| 5207 | fp->obj.sclust = scl; /* Update object allocation information */
|
---|
| 5208 | fp->obj.objsize = fsz;
|
---|
| 5209 | if (_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */
|
---|
| 5210 | fp->flag |= FA_MODIFIED;
|
---|
| 5211 | if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */
|
---|
| 5212 | fs->free_clst -= tcl;
|
---|
| 5213 | fs->fsi_flag |= 1;
|
---|
| 5214 | }
|
---|
| 5215 | }
|
---|
| 5216 | }
|
---|
| 5217 |
|
---|
| 5218 | LEAVE_FF(fs, res);
|
---|
| 5219 | }
|
---|
| 5220 |
|
---|
| 5221 | #endif /* _USE_EXPAND && !_FS_READONLY */
|
---|
| 5222 |
|
---|
| 5223 |
|
---|
| 5224 |
|
---|
| 5225 | #if _USE_FORWARD
|
---|
| 5226 | /*-----------------------------------------------------------------------*/
|
---|
| 5227 | /* Forward data to the stream directly */
|
---|
| 5228 | /*-----------------------------------------------------------------------*/
|
---|
| 5229 |
|
---|
| 5230 | FRESULT f_forward (
|
---|
| 5231 | FIL* fp, /* Pointer to the file object */
|
---|
| 5232 | UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
|
---|
| 5233 | UINT btf, /* Number of bytes to forward */
|
---|
| 5234 | UINT* bf /* Pointer to number of bytes forwarded */
|
---|
| 5235 | )
|
---|
| 5236 | {
|
---|
| 5237 | FRESULT res;
|
---|
| 5238 | FATFS *fs;
|
---|
| 5239 | DWORD clst, sect;
|
---|
| 5240 | FSIZE_t remain;
|
---|
| 5241 | UINT rcnt, csect;
|
---|
| 5242 | BYTE *dbuf;
|
---|
| 5243 |
|
---|
| 5244 |
|
---|
| 5245 | *bf = 0; /* Clear transfer byte counter */
|
---|
| 5246 | res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
---|
| 5247 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
|
---|
| 5248 | if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
|
---|
| 5249 |
|
---|
| 5250 | remain = fp->obj.objsize - fp->fptr;
|
---|
| 5251 | if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
|
---|
| 5252 |
|
---|
| 5253 | for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream goes busy */
|
---|
| 5254 | fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
|
---|
| 5255 | csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
|
---|
| 5256 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
---|
| 5257 | if (csect == 0) { /* On the cluster boundary? */
|
---|
| 5258 | clst = (fp->fptr == 0) ? /* On the top of the file? */
|
---|
| 5259 | fp->obj.sclust : get_fat(&fp->obj, fp->clust);
|
---|
| 5260 | if (clst <= 1) ABORT(fs, FR_INT_ERR);
|
---|
| 5261 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
---|
| 5262 | fp->clust = clst; /* Update current cluster */
|
---|
| 5263 | }
|
---|
| 5264 | }
|
---|
| 5265 | sect = clust2sect(fs, fp->clust); /* Get current data sector */
|
---|
| 5266 | if (!sect) ABORT(fs, FR_INT_ERR);
|
---|
| 5267 | sect += csect;
|
---|
| 5268 | #if _FS_TINY
|
---|
| 5269 | if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */
|
---|
| 5270 | dbuf = fs->win;
|
---|
| 5271 | #else
|
---|
| 5272 | if (fp->sect != sect) { /* Fill sector cache with file data */
|
---|
| 5273 | #if !_FS_READONLY
|
---|
| 5274 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
---|
| 5275 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 5276 | fp->flag &= (BYTE)~FA_DIRTY;
|
---|
| 5277 | }
|
---|
| 5278 | #endif
|
---|
| 5279 | if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
---|
| 5280 | }
|
---|
| 5281 | dbuf = fp->buf;
|
---|
| 5282 | #endif
|
---|
| 5283 | fp->sect = sect;
|
---|
| 5284 | rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
|
---|
| 5285 | if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */
|
---|
| 5286 | rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */
|
---|
| 5287 | if (!rcnt) ABORT(fs, FR_INT_ERR);
|
---|
| 5288 | }
|
---|
| 5289 |
|
---|
| 5290 | LEAVE_FF(fs, FR_OK);
|
---|
| 5291 | }
|
---|
| 5292 | #endif /* _USE_FORWARD */
|
---|
| 5293 |
|
---|
| 5294 |
|
---|
| 5295 |
|
---|
| 5296 | #if _USE_MKFS && !_FS_READONLY
|
---|
| 5297 | /*-----------------------------------------------------------------------*/
|
---|
| 5298 | /* Create an FAT/exFAT volume */
|
---|
| 5299 | /*-----------------------------------------------------------------------*/
|
---|
| 5300 |
|
---|
| 5301 | FRESULT f_mkfs (
|
---|
| 5302 | const TCHAR* path, /* Logical drive number */
|
---|
| 5303 | BYTE opt, /* Format option */
|
---|
| 5304 | DWORD au, /* Size of allocation unit (cluster) [byte] */
|
---|
| 5305 | void* work, /* Pointer to working buffer */
|
---|
| 5306 | UINT len /* Size of working buffer */
|
---|
| 5307 | )
|
---|
| 5308 | {
|
---|
| 5309 | const UINT n_fats = 1; /* Number of FATs for FAT12/16/32 volume (1 or 2) */
|
---|
| 5310 | const UINT n_rootdir = 512; /* Number of root directory entries for FAT12/16 volume */
|
---|
| 5311 | static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT12/16 volume (4Ks unit) */
|
---|
| 5312 | static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */
|
---|
| 5313 | BYTE fmt, sys, *buf, *pte, pdrv, part;
|
---|
| 5314 | WORD ss;
|
---|
| 5315 | DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n;
|
---|
| 5316 | DWORD b_vol, b_fat, b_data; /* Base LBA for volume, fat, data */
|
---|
| 5317 | DWORD sz_vol, sz_rsv, sz_fat, sz_dir; /* Size for volume, fat, dir, data */
|
---|
| 5318 | UINT i;
|
---|
| 5319 | int vol;
|
---|
| 5320 | DSTATUS stat;
|
---|
| 5321 | #if _USE_TRIM || _FS_EXFAT
|
---|
| 5322 | DWORD tbl[3];
|
---|
| 5323 | #endif
|
---|
| 5324 |
|
---|
| 5325 |
|
---|
| 5326 | /* Check mounted drive and clear work area */
|
---|
| 5327 | vol = get_ldnumber(&path); /* Get target logical drive */
|
---|
| 5328 | if (vol < 0) return FR_INVALID_DRIVE;
|
---|
| 5329 | if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear the volume */
|
---|
| 5330 | pdrv = LD2PD(vol); /* Physical drive */
|
---|
| 5331 | part = LD2PT(vol); /* Partition (0:create as new, 1-4:get from partition table) */
|
---|
| 5332 |
|
---|
| 5333 | /* Check physical drive status */
|
---|
| 5334 | stat = disk_initialize(pdrv);
|
---|
| 5335 | if (stat & STA_NOINIT) return FR_NOT_READY;
|
---|
| 5336 | if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
|
---|
| 5337 | 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 */
|
---|
| 5338 | #if _MAX_SS != _MIN_SS /* Get sector size of the medium if variable sector size cfg. */
|
---|
| 5339 | if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
|
---|
| 5340 | if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
|
---|
| 5341 | #else
|
---|
| 5342 | ss = _MAX_SS;
|
---|
| 5343 | #endif
|
---|
| 5344 | if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */
|
---|
| 5345 | au /= ss; /* Cluster size in unit of sector */
|
---|
| 5346 |
|
---|
| 5347 | /* Get working buffer */
|
---|
| 5348 | buf = (BYTE*)work; /* Working buffer */
|
---|
| 5349 | sz_buf = len / ss; /* Size of working buffer (sector) */
|
---|
| 5350 | szb_buf = sz_buf * ss; /* Size of working buffer (byte) */
|
---|
| 5351 | if (!szb_buf) return FR_MKFS_ABORTED;
|
---|
| 5352 |
|
---|
| 5353 | /* Determine where the volume to be located (b_vol, sz_vol) */
|
---|
| 5354 | if (_MULTI_PARTITION && part != 0) {
|
---|
| 5355 | /* Get partition information from partition table in the MBR */
|
---|
| 5356 | if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */
|
---|
| 5357 | if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */
|
---|
| 5358 | pte = buf + (MBR_Table + (part - 1) * SZ_PTE);
|
---|
| 5359 | if (!pte[PTE_System]) return FR_MKFS_ABORTED; /* No partition? */
|
---|
| 5360 | b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */
|
---|
| 5361 | sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */
|
---|
| 5362 | } else {
|
---|
| 5363 | /* Create a single-partition in this function */
|
---|
| 5364 | if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) return FR_DISK_ERR;
|
---|
| 5365 | b_vol = (opt & FM_SFD) ? 0 : 63; /* Volume start sector */
|
---|
| 5366 | if (sz_vol < b_vol) return FR_MKFS_ABORTED;
|
---|
| 5367 | sz_vol -= b_vol; /* Volume size */
|
---|
| 5368 | }
|
---|
| 5369 | if (sz_vol < 128) return FR_MKFS_ABORTED; /* Check if volume size is >=128s */
|
---|
| 5370 |
|
---|
| 5371 | /* Pre-determine the FAT type */
|
---|
| 5372 | do {
|
---|
| 5373 | if (_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */
|
---|
| 5374 | if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) { /* exFAT only, vol >= 64Ms or au > 128s ? */
|
---|
| 5375 | fmt = FS_EXFAT; break;
|
---|
| 5376 | }
|
---|
| 5377 | }
|
---|
| 5378 | if (au > 128) return FR_INVALID_PARAMETER; /* Too large au for FAT/FAT32 */
|
---|
| 5379 | if (opt & FM_FAT32) { /* FAT32 possible? */
|
---|
| 5380 | if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) { /* FAT32 only or no-FAT? */
|
---|
| 5381 | fmt = FS_FAT32; break;
|
---|
| 5382 | }
|
---|
| 5383 | }
|
---|
| 5384 | if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER; /* no-FAT? */
|
---|
| 5385 | fmt = FS_FAT16;
|
---|
| 5386 | } while (0);
|
---|
| 5387 |
|
---|
| 5388 | #if _FS_EXFAT
|
---|
| 5389 | if (fmt == FS_EXFAT) { /* Create an exFAT volume */
|
---|
| 5390 | DWORD szb_bit, szb_case, sum, nb, cl;
|
---|
| 5391 | WCHAR ch, si;
|
---|
| 5392 | UINT j, st;
|
---|
| 5393 | BYTE b;
|
---|
| 5394 |
|
---|
| 5395 | if (sz_vol < 0x1000) return FR_MKFS_ABORTED; /* Too small volume? */
|
---|
| 5396 | #if _USE_TRIM
|
---|
| 5397 | tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area may be erased */
|
---|
| 5398 | disk_ioctl(pdrv, CTRL_TRIM, tbl);
|
---|
| 5399 | #endif
|
---|
| 5400 | /* Determine FAT location, data location and number of clusters */
|
---|
| 5401 | if (!au) { /* au auto-selection */
|
---|
| 5402 | au = 8;
|
---|
| 5403 | if (sz_vol >= 0x80000) au = 64; /* >= 512Ks */
|
---|
| 5404 | if (sz_vol >= 0x4000000) au = 256; /* >= 64Ms */
|
---|
| 5405 | }
|
---|
| 5406 | b_fat = b_vol + 32; /* FAT start at offset 32 */
|
---|
| 5407 | sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */
|
---|
| 5408 | b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */
|
---|
| 5409 | if (b_data >= sz_vol / 2) return FR_MKFS_ABORTED; /* Too small volume? */
|
---|
| 5410 | n_clst = (sz_vol - (b_data - b_vol)) / au; /* Number of clusters */
|
---|
| 5411 | if (n_clst <16) return FR_MKFS_ABORTED; /* Too few clusters? */
|
---|
| 5412 | if (n_clst > MAX_EXFAT) return FR_MKFS_ABORTED; /* Too many clusters? */
|
---|
| 5413 |
|
---|
| 5414 | szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */
|
---|
| 5415 | tbl[0] = (szb_bit + au * ss - 1) / (au * ss); /* Number of allocation bitmap clusters */
|
---|
| 5416 |
|
---|
| 5417 | /* Create a compressed up-case table */
|
---|
| 5418 | sect = b_data + au * tbl[0]; /* Table start sector */
|
---|
| 5419 | sum = 0; /* Table checksum to be stored in the 82 entry */
|
---|
| 5420 | st = si = i = j = szb_case = 0;
|
---|
| 5421 | do {
|
---|
| 5422 | switch (st) {
|
---|
| 5423 | case 0:
|
---|
| 5424 | ch = ff_wtoupper(si); /* Get an up-case char */
|
---|
| 5425 | if (ch != si) {
|
---|
| 5426 | si++; break; /* Store the up-case char if exist */
|
---|
| 5427 | }
|
---|
| 5428 | for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */
|
---|
| 5429 | if (j >= 128) {
|
---|
| 5430 | ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */
|
---|
| 5431 | }
|
---|
| 5432 | st = 1; /* Do not compress short run */
|
---|
| 5433 | /* go to next case */
|
---|
| 5434 | case 1:
|
---|
| 5435 | ch = si++; /* Fill the short run */
|
---|
| 5436 | if (--j == 0) st = 0;
|
---|
| 5437 | break;
|
---|
| 5438 |
|
---|
| 5439 | default:
|
---|
| 5440 | ch = (WCHAR)j; si += j; /* Number of chars to skip */
|
---|
| 5441 | st = 0;
|
---|
| 5442 | }
|
---|
| 5443 | sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */
|
---|
| 5444 | sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);
|
---|
| 5445 | i += 2; szb_case += 2;
|
---|
| 5446 | if (!si || i == szb_buf) { /* Write buffered data when buffer full or end of process */
|
---|
| 5447 | n = (i + ss - 1) / ss;
|
---|
| 5448 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5449 | sect += n; i = 0;
|
---|
| 5450 | }
|
---|
| 5451 | } while (si);
|
---|
| 5452 | tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case table clusters */
|
---|
| 5453 | tbl[2] = 1; /* Number of root dir clusters */
|
---|
| 5454 |
|
---|
| 5455 | /* Initialize the allocation bitmap */
|
---|
| 5456 | sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */
|
---|
| 5457 | nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */
|
---|
| 5458 | do {
|
---|
| 5459 | mem_set(buf, 0, szb_buf);
|
---|
| 5460 | for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ;
|
---|
| 5461 | for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ;
|
---|
| 5462 | n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
|
---|
| 5463 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5464 | sect += n; nsect -= n;
|
---|
| 5465 | } while (nsect);
|
---|
| 5466 |
|
---|
| 5467 | /* Initialize the FAT */
|
---|
| 5468 | sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */
|
---|
| 5469 | j = nb = cl = 0;
|
---|
| 5470 | do {
|
---|
| 5471 | mem_set(buf, 0, szb_buf); i = 0; /* Clear work area and reset write index */
|
---|
| 5472 | if (cl == 0) { /* Set entry 0 and 1 */
|
---|
| 5473 | st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;
|
---|
| 5474 | st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;
|
---|
| 5475 | }
|
---|
| 5476 | do { /* Create chains of bitmap, up-case and root dir */
|
---|
| 5477 | while (nb && i < szb_buf) { /* Create a chain */
|
---|
| 5478 | st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);
|
---|
| 5479 | i += 4; cl++; nb--;
|
---|
| 5480 | }
|
---|
| 5481 | if (!nb && j < 3) nb = tbl[j++]; /* Next chain */
|
---|
| 5482 | } while (nb && i < szb_buf);
|
---|
| 5483 | n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
|
---|
| 5484 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5485 | sect += n; nsect -= n;
|
---|
| 5486 | } while (nsect);
|
---|
| 5487 |
|
---|
| 5488 | /* Initialize the root directory */
|
---|
| 5489 | mem_set(buf, 0, szb_buf);
|
---|
| 5490 | buf[SZDIRE * 0 + 0] = 0x83; /* 83 entry (volume label) */
|
---|
| 5491 | buf[SZDIRE * 1 + 0] = 0x81; /* 81 entry (allocation bitmap) */
|
---|
| 5492 | st_dword(buf + SZDIRE * 1 + 20, 2);
|
---|
| 5493 | st_dword(buf + SZDIRE * 1 + 24, szb_bit);
|
---|
| 5494 | buf[SZDIRE * 2 + 0] = 0x82; /* 82 entry (up-case table) */
|
---|
| 5495 | st_dword(buf + SZDIRE * 2 + 4, sum);
|
---|
| 5496 | st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]);
|
---|
| 5497 | st_dword(buf + SZDIRE * 2 + 24, szb_case);
|
---|
| 5498 | sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */
|
---|
| 5499 | do { /* Fill root directory sectors */
|
---|
| 5500 | n = (nsect > sz_buf) ? sz_buf : nsect;
|
---|
| 5501 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5502 | mem_set(buf, 0, ss);
|
---|
| 5503 | sect += n; nsect -= n;
|
---|
| 5504 | } while (nsect);
|
---|
| 5505 |
|
---|
| 5506 | /* Create two set of the exFAT VBR blocks */
|
---|
| 5507 | sect = b_vol;
|
---|
| 5508 | for (n = 0; n < 2; n++) {
|
---|
| 5509 | /* Main record (+0) */
|
---|
| 5510 | mem_set(buf, 0, ss);
|
---|
| 5511 | mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */
|
---|
| 5512 | st_dword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */
|
---|
| 5513 | st_dword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */
|
---|
| 5514 | st_dword(buf + BPB_FatOfsEx, b_fat - b_vol); /* FAT offset [sector] */
|
---|
| 5515 | st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */
|
---|
| 5516 | st_dword(buf + BPB_DataOfsEx, b_data - b_vol); /* Data offset [sector] */
|
---|
| 5517 | st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */
|
---|
| 5518 | st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */
|
---|
| 5519 | st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */
|
---|
| 5520 | st_word(buf + BPB_FSVerEx, 0x100); /* File system version (1.00) */
|
---|
| 5521 | for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */
|
---|
| 5522 | for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */
|
---|
| 5523 | buf[BPB_NumFATsEx] = 1; /* Number of FATs */
|
---|
| 5524 | buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */
|
---|
| 5525 | st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */
|
---|
| 5526 | st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */
|
---|
| 5527 | for (i = sum = 0; i < ss; i++) { /* VBR checksum */
|
---|
| 5528 | if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);
|
---|
| 5529 | }
|
---|
| 5530 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
|
---|
| 5531 | /* Extended bootstrap record (+1..+8) */
|
---|
| 5532 | mem_set(buf, 0, ss);
|
---|
| 5533 | st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */
|
---|
| 5534 | for (j = 1; j < 9; j++) {
|
---|
| 5535 | for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
|
---|
| 5536 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
|
---|
| 5537 | }
|
---|
| 5538 | /* OEM/Reserved record (+9..+10) */
|
---|
| 5539 | mem_set(buf, 0, ss);
|
---|
| 5540 | for ( ; j < 11; j++) {
|
---|
| 5541 | for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
|
---|
| 5542 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
|
---|
| 5543 | }
|
---|
| 5544 | /* Sum record (+11) */
|
---|
| 5545 | for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */
|
---|
| 5546 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
|
---|
| 5547 | }
|
---|
| 5548 |
|
---|
| 5549 | } else
|
---|
| 5550 | #endif /* _FS_EXFAT */
|
---|
| 5551 | { /* Create an FAT12/16/32 volume */
|
---|
| 5552 | do {
|
---|
| 5553 | pau = au;
|
---|
| 5554 | /* Pre-determine number of clusters and FAT sub-type */
|
---|
| 5555 | if (fmt == FS_FAT32) { /* FAT32 volume */
|
---|
| 5556 | if (!pau) { /* au auto-selection */
|
---|
| 5557 | n = sz_vol / 0x20000; /* Volume size in unit of 128KS */
|
---|
| 5558 | for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */
|
---|
| 5559 | }
|
---|
| 5560 | n_clst = sz_vol / pau; /* Number of clusters */
|
---|
| 5561 | sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */
|
---|
| 5562 | sz_rsv = 32; /* Number of reserved sectors */
|
---|
| 5563 | sz_dir = 0; /* No static directory */
|
---|
| 5564 | if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) return FR_MKFS_ABORTED;
|
---|
| 5565 | } else { /* FAT12/16 volume */
|
---|
| 5566 | if (!pau) { /* au auto-selection */
|
---|
| 5567 | n = sz_vol / 0x1000; /* Volume size in unit of 4KS */
|
---|
| 5568 | for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */
|
---|
| 5569 | }
|
---|
| 5570 | n_clst = sz_vol / pau;
|
---|
| 5571 | if (n_clst > MAX_FAT12) {
|
---|
| 5572 | n = n_clst * 2 + 4; /* FAT size [byte] */
|
---|
| 5573 | } else {
|
---|
| 5574 | fmt = FS_FAT12;
|
---|
| 5575 | n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */
|
---|
| 5576 | }
|
---|
| 5577 | sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */
|
---|
| 5578 | sz_rsv = 1; /* Number of reserved sectors */
|
---|
| 5579 | sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */
|
---|
| 5580 | }
|
---|
| 5581 | b_fat = b_vol + sz_rsv; /* FAT base */
|
---|
| 5582 | b_data = b_fat + sz_fat * n_fats + sz_dir; /* Data base */
|
---|
| 5583 |
|
---|
| 5584 | /* Align data base to erase block boundary (for flash memory media) */
|
---|
| 5585 | n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data; /* Next nearest erase block from current data base */
|
---|
| 5586 | if (fmt == FS_FAT32) { /* FAT32: Move FAT base */
|
---|
| 5587 | sz_rsv += n; b_fat += n;
|
---|
| 5588 | } else { /* FAT12/16: Expand FAT size */
|
---|
| 5589 | sz_fat += n / n_fats;
|
---|
| 5590 | }
|
---|
| 5591 |
|
---|
| 5592 | /* Determine number of clusters and final check of validity of the FAT sub-type */
|
---|
| 5593 | if (sz_vol < b_data + pau * 16 - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
|
---|
| 5594 | n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau;
|
---|
| 5595 | if (fmt == FS_FAT32) {
|
---|
| 5596 | if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32 */
|
---|
| 5597 | if (!au && (au = pau / 2) != 0) continue; /* Adjust cluster size and retry */
|
---|
| 5598 | return FR_MKFS_ABORTED;
|
---|
| 5599 | }
|
---|
| 5600 | }
|
---|
| 5601 | if (fmt == FS_FAT16) {
|
---|
| 5602 | if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */
|
---|
| 5603 | if (!au && (pau * 2) <= 64) {
|
---|
| 5604 | au = pau * 2; continue; /* Adjust cluster size and retry */
|
---|
| 5605 | }
|
---|
| 5606 | if ((opt & FM_FAT32)) {
|
---|
| 5607 | fmt = FS_FAT32; continue; /* Switch type to FAT32 and retry */
|
---|
| 5608 | }
|
---|
| 5609 | if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
|
---|
| 5610 | return FR_MKFS_ABORTED;
|
---|
| 5611 | }
|
---|
| 5612 | if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */
|
---|
| 5613 | if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
|
---|
| 5614 | return FR_MKFS_ABORTED;
|
---|
| 5615 | }
|
---|
| 5616 | }
|
---|
| 5617 | if (fmt == FS_FAT12 && n_clst > MAX_FAT12) return FR_MKFS_ABORTED; /* Too many clusters for FAT12 */
|
---|
| 5618 |
|
---|
| 5619 | /* Ok, it is the valid cluster configuration */
|
---|
| 5620 | break;
|
---|
| 5621 | } while (1);
|
---|
| 5622 |
|
---|
| 5623 | #if _USE_TRIM
|
---|
| 5624 | tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */
|
---|
| 5625 | disk_ioctl(pdrv, CTRL_TRIM, tbl);
|
---|
| 5626 | #endif
|
---|
| 5627 | /* Create FAT VBR */
|
---|
| 5628 | mem_set(buf, 0, ss);
|
---|
| 5629 | mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */
|
---|
| 5630 | st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */
|
---|
| 5631 | buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */
|
---|
| 5632 | st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */
|
---|
| 5633 | buf[BPB_NumFATs] = (BYTE)n_fats; /* Number of FATs */
|
---|
| 5634 | st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir)); /* Number of root directory entries */
|
---|
| 5635 | if (sz_vol < 0x10000) {
|
---|
| 5636 | st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */
|
---|
| 5637 | } else {
|
---|
| 5638 | st_dword(buf + BPB_TotSec32, sz_vol); /* Volume size in 32-bit LBA */
|
---|
| 5639 | }
|
---|
| 5640 | buf[BPB_Media] = 0xF8; /* Media descriptor byte */
|
---|
| 5641 | st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */
|
---|
| 5642 | st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */
|
---|
| 5643 | st_dword(buf + BPB_HiddSec, b_vol); /* Volume offset in the physical drive [sector] */
|
---|
| 5644 | if (fmt == FS_FAT32) {
|
---|
| 5645 | st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */
|
---|
| 5646 | st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */
|
---|
| 5647 | st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */
|
---|
| 5648 | st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */
|
---|
| 5649 | st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */
|
---|
| 5650 | buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */
|
---|
| 5651 | buf[BS_BootSig32] = 0x29; /* Extended boot signature */
|
---|
| 5652 | mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
|
---|
| 5653 | } else {
|
---|
| 5654 | st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */
|
---|
| 5655 | st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */
|
---|
| 5656 | buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */
|
---|
| 5657 | buf[BS_BootSig] = 0x29; /* Extended boot signature */
|
---|
| 5658 | mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
|
---|
| 5659 | }
|
---|
| 5660 | st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */
|
---|
| 5661 | if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the VBR sector */
|
---|
| 5662 |
|
---|
| 5663 | /* Create FSINFO record if needed */
|
---|
| 5664 | if (fmt == FS_FAT32) {
|
---|
| 5665 | disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */
|
---|
| 5666 | mem_set(buf, 0, ss);
|
---|
| 5667 | st_dword(buf + FSI_LeadSig, 0x41615252);
|
---|
| 5668 | st_dword(buf + FSI_StrucSig, 0x61417272);
|
---|
| 5669 | st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
|
---|
| 5670 | st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */
|
---|
| 5671 | st_word(buf + BS_55AA, 0xAA55);
|
---|
| 5672 | disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */
|
---|
| 5673 | disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */
|
---|
| 5674 | }
|
---|
| 5675 |
|
---|
| 5676 | /* Initialize FAT area */
|
---|
| 5677 | mem_set(buf, 0, (UINT)szb_buf);
|
---|
| 5678 | sect = b_fat; /* FAT start sector */
|
---|
| 5679 | for (i = 0; i < n_fats; i++) { /* Initialize FATs each */
|
---|
| 5680 | if (fmt == FS_FAT32) {
|
---|
| 5681 | st_dword(buf + 0, 0xFFFFFFF8); /* Entry 0 */
|
---|
| 5682 | st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */
|
---|
| 5683 | st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */
|
---|
| 5684 | } else {
|
---|
| 5685 | st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */
|
---|
| 5686 | }
|
---|
| 5687 | nsect = sz_fat; /* Number of FAT sectors */
|
---|
| 5688 | do { /* Fill FAT sectors */
|
---|
| 5689 | n = (nsect > sz_buf) ? sz_buf : nsect;
|
---|
| 5690 | if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5691 | mem_set(buf, 0, ss);
|
---|
| 5692 | sect += n; nsect -= n;
|
---|
| 5693 | } while (nsect);
|
---|
| 5694 | }
|
---|
| 5695 |
|
---|
| 5696 | /* Initialize root directory (fill with zero) */
|
---|
| 5697 | nsect = (fmt == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */
|
---|
| 5698 | do {
|
---|
| 5699 | n = (nsect > sz_buf) ? sz_buf : nsect;
|
---|
| 5700 | if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
|
---|
| 5701 | sect += n; nsect -= n;
|
---|
| 5702 | } while (nsect);
|
---|
| 5703 | }
|
---|
| 5704 |
|
---|
| 5705 | /* Determine system ID in the partition table */
|
---|
| 5706 | if (_FS_EXFAT && fmt == FS_EXFAT) {
|
---|
| 5707 | sys = 0x07; /* HPFS/NTFS/exFAT */
|
---|
| 5708 | } else {
|
---|
| 5709 | if (fmt == FS_FAT32) {
|
---|
| 5710 | sys = 0x0C; /* FAT32X */
|
---|
| 5711 | } else {
|
---|
| 5712 | if (sz_vol >= 0x10000) {
|
---|
| 5713 | sys = 0x06; /* FAT12/16 (>=64KS) */
|
---|
| 5714 | } else {
|
---|
| 5715 | sys = (fmt == FS_FAT16) ? 0x04 : 0x01; /* FAT16 (<64KS) : FAT12 (<64KS) */
|
---|
| 5716 | }
|
---|
| 5717 | }
|
---|
| 5718 | }
|
---|
| 5719 |
|
---|
| 5720 | /* Update partition information */
|
---|
| 5721 | if (_MULTI_PARTITION && part != 0) { /* Created in the existing partition */
|
---|
| 5722 | /* Update system ID in the partition table */
|
---|
| 5723 | if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Read the MBR */
|
---|
| 5724 | buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys; /* Set system ID */
|
---|
| 5725 | if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it back to the MBR */
|
---|
| 5726 | } else { /* Created as a new single partition */
|
---|
| 5727 | if (!(opt & FM_SFD)) { /* Create partition table if in FDISK format */
|
---|
| 5728 | mem_set(buf, 0, ss);
|
---|
| 5729 | st_word(buf + BS_55AA, 0xAA55); /* MBR signature */
|
---|
| 5730 | pte = buf + MBR_Table; /* Create partition table for single partition in the drive */
|
---|
| 5731 | pte[PTE_Boot] = 0; /* Boot indicator */
|
---|
| 5732 | pte[PTE_StHead] = 1; /* Start head */
|
---|
| 5733 | pte[PTE_StSec] = 1; /* Start sector */
|
---|
| 5734 | pte[PTE_StCyl] = 0; /* Start cylinder */
|
---|
| 5735 | pte[PTE_System] = sys; /* System type */
|
---|
| 5736 | n = (b_vol + sz_vol) / (63 * 255); /* (End CHS may be invalid) */
|
---|
| 5737 | pte[PTE_EdHead] = 254; /* End head */
|
---|
| 5738 | pte[PTE_EdSec] = (BYTE)(n >> 2 | 63); /* End sector */
|
---|
| 5739 | pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */
|
---|
| 5740 | st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */
|
---|
| 5741 | st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */
|
---|
| 5742 | if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */
|
---|
| 5743 | }
|
---|
| 5744 | }
|
---|
| 5745 |
|
---|
| 5746 | if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) return FR_DISK_ERR;
|
---|
| 5747 |
|
---|
| 5748 | return FR_OK;
|
---|
| 5749 | }
|
---|
| 5750 |
|
---|
| 5751 |
|
---|
| 5752 |
|
---|
| 5753 | #if _MULTI_PARTITION
|
---|
| 5754 | /*-----------------------------------------------------------------------*/
|
---|
| 5755 | /* Create partition table on the physical drive */
|
---|
| 5756 | /*-----------------------------------------------------------------------*/
|
---|
| 5757 |
|
---|
| 5758 | FRESULT f_fdisk (
|
---|
| 5759 | BYTE pdrv, /* Physical drive number */
|
---|
| 5760 | const DWORD* szt, /* Pointer to the size table for each partitions */
|
---|
| 5761 | void* work /* Pointer to the working buffer */
|
---|
| 5762 | )
|
---|
| 5763 | {
|
---|
| 5764 | UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
|
---|
| 5765 | BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
|
---|
| 5766 | DSTATUS stat;
|
---|
| 5767 | DWORD sz_disk, sz_part, s_part;
|
---|
| 5768 |
|
---|
| 5769 |
|
---|
| 5770 | stat = disk_initialize(pdrv);
|
---|
| 5771 | if (stat & STA_NOINIT) return FR_NOT_READY;
|
---|
| 5772 | if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
|
---|
| 5773 | if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
|
---|
| 5774 |
|
---|
| 5775 | /* Determine the CHS without any consideration of the drive geometry */
|
---|
| 5776 | for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
|
---|
| 5777 | if (n == 256) n--;
|
---|
| 5778 | e_hd = n - 1;
|
---|
| 5779 | sz_cyl = 63 * n;
|
---|
| 5780 | tot_cyl = sz_disk / sz_cyl;
|
---|
| 5781 |
|
---|
| 5782 | /* Create partition table */
|
---|
| 5783 | mem_set(buf, 0, _MAX_SS);
|
---|
| 5784 | p = buf + MBR_Table; b_cyl = 0;
|
---|
| 5785 | for (i = 0; i < 4; i++, p += SZ_PTE) {
|
---|
| 5786 | p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl; /* Number of cylinders */
|
---|
| 5787 | if (!p_cyl) continue;
|
---|
| 5788 | s_part = (DWORD)sz_cyl * b_cyl;
|
---|
| 5789 | sz_part = (DWORD)sz_cyl * p_cyl;
|
---|
| 5790 | if (i == 0) { /* Exclude first track of cylinder 0 */
|
---|
| 5791 | s_hd = 1;
|
---|
| 5792 | s_part += 63; sz_part -= 63;
|
---|
| 5793 | } else {
|
---|
| 5794 | s_hd = 0;
|
---|
| 5795 | }
|
---|
| 5796 | e_cyl = b_cyl + p_cyl - 1; /* End cylinder */
|
---|
| 5797 | if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
|
---|
| 5798 |
|
---|
| 5799 | /* Set partition table */
|
---|
| 5800 | p[1] = s_hd; /* Start head */
|
---|
| 5801 | p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
|
---|
| 5802 | p[3] = (BYTE)b_cyl; /* Start cylinder */
|
---|
| 5803 | p[4] = 0x07; /* System type (temporary setting) */
|
---|
| 5804 | p[5] = e_hd; /* End head */
|
---|
| 5805 | p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
|
---|
| 5806 | p[7] = (BYTE)e_cyl; /* End cylinder */
|
---|
| 5807 | st_dword(p + 8, s_part); /* Start sector in LBA */
|
---|
| 5808 | st_dword(p + 12, sz_part); /* Number of sectors */
|
---|
| 5809 |
|
---|
| 5810 | /* Next partition */
|
---|
| 5811 | b_cyl += p_cyl;
|
---|
| 5812 | }
|
---|
| 5813 | st_word(p, 0xAA55);
|
---|
| 5814 |
|
---|
| 5815 | /* Write it to the MBR */
|
---|
| 5816 | return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
|
---|
| 5817 | }
|
---|
| 5818 |
|
---|
| 5819 | #endif /* _MULTI_PARTITION */
|
---|
| 5820 | #endif /* _USE_MKFS && !_FS_READONLY */
|
---|
| 5821 |
|
---|
| 5822 |
|
---|
| 5823 |
|
---|
| 5824 |
|
---|
| 5825 | #if _USE_STRFUNC
|
---|
| 5826 | /*-----------------------------------------------------------------------*/
|
---|
| 5827 | /* Get a string from the file */
|
---|
| 5828 | /*-----------------------------------------------------------------------*/
|
---|
| 5829 |
|
---|
| 5830 | TCHAR* f_gets (
|
---|
| 5831 | TCHAR* buff, /* Pointer to the string buffer to read */
|
---|
| 5832 | int len, /* Size of string buffer (characters) */
|
---|
| 5833 | FIL* fp /* Pointer to the file object */
|
---|
| 5834 | )
|
---|
| 5835 | {
|
---|
| 5836 | int n = 0;
|
---|
| 5837 | TCHAR c, *p = buff;
|
---|
| 5838 | BYTE s[2];
|
---|
| 5839 | UINT rc;
|
---|
| 5840 |
|
---|
| 5841 |
|
---|
| 5842 | while (n < len - 1) { /* Read characters until buffer gets filled */
|
---|
| 5843 | #if _LFN_UNICODE
|
---|
| 5844 | #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
|
---|
| 5845 | f_read(fp, s, 1, &rc);
|
---|
| 5846 | if (rc != 1) break;
|
---|
| 5847 | c = s[0];
|
---|
| 5848 | if (c >= 0x80) {
|
---|
| 5849 | if (c < 0xC0) continue; /* Skip stray trailer */
|
---|
| 5850 | if (c < 0xE0) { /* Two-byte sequence (0x80-0x7FF) */
|
---|
| 5851 | f_read(fp, s, 1, &rc);
|
---|
| 5852 | if (rc != 1) break;
|
---|
| 5853 | c = (c & 0x1F) << 6 | (s[0] & 0x3F);
|
---|
| 5854 | if (c < 0x80) c = '?'; /* Reject invalid code range */
|
---|
| 5855 | } else {
|
---|
| 5856 | if (c < 0xF0) { /* Three-byte sequence (0x800-0xFFFF) */
|
---|
| 5857 | f_read(fp, s, 2, &rc);
|
---|
| 5858 | if (rc != 2) break;
|
---|
| 5859 | c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);
|
---|
| 5860 | if (c < 0x800) c = '?'; /* Reject invalid code range */
|
---|
| 5861 | } else { /* Reject four-byte sequence */
|
---|
| 5862 | c = '?';
|
---|
| 5863 | }
|
---|
| 5864 | }
|
---|
| 5865 | }
|
---|
| 5866 | #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
|
---|
| 5867 | f_read(fp, s, 2, &rc);
|
---|
| 5868 | if (rc != 2) break;
|
---|
| 5869 | c = s[1] + (s[0] << 8);
|
---|
| 5870 | #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
|
---|
| 5871 | f_read(fp, s, 2, &rc);
|
---|
| 5872 | if (rc != 2) break;
|
---|
| 5873 | c = s[0] + (s[1] << 8);
|
---|
| 5874 | #else /* Read a character in ANSI/OEM */
|
---|
| 5875 | f_read(fp, s, 1, &rc);
|
---|
| 5876 | if (rc != 1) break;
|
---|
| 5877 | c = s[0];
|
---|
| 5878 | if (IsDBCS1(c)) {
|
---|
| 5879 | f_read(fp, s, 1, &rc);
|
---|
| 5880 | if (rc != 1) break;
|
---|
| 5881 | c = (c << 8) + s[0];
|
---|
| 5882 | }
|
---|
| 5883 | c = ff_convert(c, 1); /* OEM -> Unicode */
|
---|
| 5884 | if (!c) c = '?';
|
---|
| 5885 | #endif
|
---|
| 5886 | #else /* Read a character without conversion */
|
---|
| 5887 | f_read(fp, s, 1, &rc);
|
---|
| 5888 | if (rc != 1) break;
|
---|
| 5889 | c = s[0];
|
---|
| 5890 | #endif
|
---|
| 5891 | if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */
|
---|
| 5892 | *p++ = c;
|
---|
| 5893 | n++;
|
---|
| 5894 | if (c == '\n') break; /* Break on EOL */
|
---|
| 5895 | }
|
---|
| 5896 | *p = 0;
|
---|
| 5897 | return n ? buff : 0; /* When no data read (eof or error), return with error. */
|
---|
| 5898 | }
|
---|
| 5899 |
|
---|
| 5900 |
|
---|
| 5901 |
|
---|
| 5902 |
|
---|
| 5903 | #if !_FS_READONLY
|
---|
| 5904 | #include <stdarg.h>
|
---|
| 5905 | /*-----------------------------------------------------------------------*/
|
---|
| 5906 | /* Put a character to the file */
|
---|
| 5907 | /*-----------------------------------------------------------------------*/
|
---|
| 5908 |
|
---|
| 5909 | typedef struct {
|
---|
| 5910 | FIL *fp; /* Ptr to the writing file */
|
---|
| 5911 | int idx, nchr; /* Write index of buf[] (-1:error), number of chars written */
|
---|
| 5912 | BYTE buf[64]; /* Write buffer */
|
---|
| 5913 | } putbuff;
|
---|
| 5914 |
|
---|
| 5915 |
|
---|
| 5916 | static
|
---|
| 5917 | void putc_bfd ( /* Buffered write with code conversion */
|
---|
| 5918 | putbuff* pb,
|
---|
| 5919 | TCHAR c
|
---|
| 5920 | )
|
---|
| 5921 | {
|
---|
| 5922 | UINT bw;
|
---|
| 5923 | int i;
|
---|
| 5924 |
|
---|
| 5925 |
|
---|
| 5926 | if (_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */
|
---|
| 5927 | putc_bfd(pb, '\r');
|
---|
| 5928 | }
|
---|
| 5929 |
|
---|
| 5930 | i = pb->idx; /* Write index of pb->buf[] */
|
---|
| 5931 | if (i < 0) return;
|
---|
| 5932 |
|
---|
| 5933 | #if _LFN_UNICODE
|
---|
| 5934 | #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
|
---|
| 5935 | if (c < 0x80) { /* 7-bit */
|
---|
| 5936 | pb->buf[i++] = (BYTE)c;
|
---|
| 5937 | } else {
|
---|
| 5938 | if (c < 0x800) { /* 11-bit */
|
---|
| 5939 | pb->buf[i++] = (BYTE)(0xC0 | c >> 6);
|
---|
| 5940 | } else { /* 16-bit */
|
---|
| 5941 | pb->buf[i++] = (BYTE)(0xE0 | c >> 12);
|
---|
| 5942 | pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));
|
---|
| 5943 | }
|
---|
| 5944 | pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));
|
---|
| 5945 | }
|
---|
| 5946 | #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
|
---|
| 5947 | pb->buf[i++] = (BYTE)(c >> 8);
|
---|
| 5948 | pb->buf[i++] = (BYTE)c;
|
---|
| 5949 | #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
|
---|
| 5950 | pb->buf[i++] = (BYTE)c;
|
---|
| 5951 | pb->buf[i++] = (BYTE)(c >> 8);
|
---|
| 5952 | #else /* Write a character in ANSI/OEM */
|
---|
| 5953 | c = ff_convert(c, 0); /* Unicode -> OEM */
|
---|
| 5954 | if (!c) c = '?';
|
---|
| 5955 | if (c >= 0x100)
|
---|
| 5956 | pb->buf[i++] = (BYTE)(c >> 8);
|
---|
| 5957 | pb->buf[i++] = (BYTE)c;
|
---|
| 5958 | #endif
|
---|
| 5959 | #else /* Write a character without conversion */
|
---|
| 5960 | pb->buf[i++] = (BYTE)c;
|
---|
| 5961 | #endif
|
---|
| 5962 |
|
---|
| 5963 | if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */
|
---|
| 5964 | f_write(pb->fp, pb->buf, (UINT)i, &bw);
|
---|
| 5965 | i = (bw == (UINT)i) ? 0 : -1;
|
---|
| 5966 | }
|
---|
| 5967 | pb->idx = i;
|
---|
| 5968 | pb->nchr++;
|
---|
| 5969 | }
|
---|
| 5970 |
|
---|
| 5971 |
|
---|
| 5972 | static
|
---|
| 5973 | int putc_flush ( /* Flush left characters in the buffer */
|
---|
| 5974 | putbuff* pb
|
---|
| 5975 | )
|
---|
| 5976 | {
|
---|
| 5977 | UINT nw;
|
---|
| 5978 |
|
---|
| 5979 | if ( pb->idx >= 0 /* Flush buffered characters to the file */
|
---|
| 5980 | && f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK
|
---|
| 5981 | && (UINT)pb->idx == nw) return pb->nchr;
|
---|
| 5982 | return EOF;
|
---|
| 5983 | }
|
---|
| 5984 |
|
---|
| 5985 |
|
---|
| 5986 | static
|
---|
| 5987 | void putc_init ( /* Initialize write buffer */
|
---|
| 5988 | putbuff* pb,
|
---|
| 5989 | FIL* fp
|
---|
| 5990 | )
|
---|
| 5991 | {
|
---|
| 5992 | pb->fp = fp;
|
---|
| 5993 | pb->nchr = pb->idx = 0;
|
---|
| 5994 | }
|
---|
| 5995 |
|
---|
| 5996 |
|
---|
| 5997 |
|
---|
| 5998 | int f_putc (
|
---|
| 5999 | TCHAR c, /* A character to be output */
|
---|
| 6000 | FIL* fp /* Pointer to the file object */
|
---|
| 6001 | )
|
---|
| 6002 | {
|
---|
| 6003 | putbuff pb;
|
---|
| 6004 |
|
---|
| 6005 |
|
---|
| 6006 | putc_init(&pb, fp);
|
---|
| 6007 | putc_bfd(&pb, c); /* Put the character */
|
---|
| 6008 | return putc_flush(&pb);
|
---|
| 6009 | }
|
---|
| 6010 |
|
---|
| 6011 |
|
---|
| 6012 |
|
---|
| 6013 |
|
---|
| 6014 | /*-----------------------------------------------------------------------*/
|
---|
| 6015 | /* Put a string to the file */
|
---|
| 6016 | /*-----------------------------------------------------------------------*/
|
---|
| 6017 |
|
---|
| 6018 | int f_puts (
|
---|
| 6019 | const TCHAR* str, /* Pointer to the string to be output */
|
---|
| 6020 | FIL* fp /* Pointer to the file object */
|
---|
| 6021 | )
|
---|
| 6022 | {
|
---|
| 6023 | putbuff pb;
|
---|
| 6024 |
|
---|
| 6025 |
|
---|
| 6026 | putc_init(&pb, fp);
|
---|
| 6027 | while (*str) putc_bfd(&pb, *str++); /* Put the string */
|
---|
| 6028 | return putc_flush(&pb);
|
---|
| 6029 | }
|
---|
| 6030 |
|
---|
| 6031 |
|
---|
| 6032 |
|
---|
| 6033 |
|
---|
| 6034 | /*-----------------------------------------------------------------------*/
|
---|
| 6035 | /* Put a formatted string to the file */
|
---|
| 6036 | /*-----------------------------------------------------------------------*/
|
---|
| 6037 |
|
---|
| 6038 | int f_printf (
|
---|
| 6039 | FIL* fp, /* Pointer to the file object */
|
---|
| 6040 | const TCHAR* fmt, /* Pointer to the format string */
|
---|
| 6041 | ... /* Optional arguments... */
|
---|
| 6042 | )
|
---|
| 6043 | {
|
---|
| 6044 | va_list arp;
|
---|
| 6045 | putbuff pb;
|
---|
| 6046 | BYTE f, r;
|
---|
| 6047 | UINT i, j, w;
|
---|
| 6048 | DWORD v;
|
---|
| 6049 | TCHAR c, d, str[32], *p;
|
---|
| 6050 |
|
---|
| 6051 |
|
---|
| 6052 | putc_init(&pb, fp);
|
---|
| 6053 |
|
---|
| 6054 | va_start(arp, fmt);
|
---|
| 6055 |
|
---|
| 6056 | for (;;) {
|
---|
| 6057 | c = *fmt++;
|
---|
| 6058 | if (c == 0) break; /* End of string */
|
---|
| 6059 | if (c != '%') { /* Non escape character */
|
---|
| 6060 | putc_bfd(&pb, c);
|
---|
| 6061 | continue;
|
---|
| 6062 | }
|
---|
| 6063 | w = f = 0;
|
---|
| 6064 | c = *fmt++;
|
---|
| 6065 | if (c == '0') { /* Flag: '0' padding */
|
---|
| 6066 | f = 1; c = *fmt++;
|
---|
| 6067 | } else {
|
---|
| 6068 | if (c == '-') { /* Flag: left justified */
|
---|
| 6069 | f = 2; c = *fmt++;
|
---|
| 6070 | }
|
---|
| 6071 | }
|
---|
| 6072 | while (IsDigit(c)) { /* Precision */
|
---|
| 6073 | w = w * 10 + c - '0';
|
---|
| 6074 | c = *fmt++;
|
---|
| 6075 | }
|
---|
| 6076 | if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
|
---|
| 6077 | f |= 4; c = *fmt++;
|
---|
| 6078 | }
|
---|
| 6079 | if (!c) break;
|
---|
| 6080 | d = c;
|
---|
| 6081 | if (IsLower(d)) d -= 0x20;
|
---|
| 6082 | switch (d) { /* Type is... */
|
---|
| 6083 | case 'S' : /* String */
|
---|
| 6084 | p = va_arg(arp, TCHAR*);
|
---|
| 6085 | for (j = 0; p[j]; j++) ;
|
---|
| 6086 | if (!(f & 2)) {
|
---|
| 6087 | while (j++ < w) putc_bfd(&pb, ' ');
|
---|
| 6088 | }
|
---|
| 6089 | while (*p) putc_bfd(&pb, *p++);
|
---|
| 6090 | while (j++ < w) putc_bfd(&pb, ' ');
|
---|
| 6091 | continue;
|
---|
| 6092 |
|
---|
| 6093 | case 'C' : /* Character */
|
---|
| 6094 | putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
|
---|
| 6095 |
|
---|
| 6096 | case 'B' : /* Binary */
|
---|
| 6097 | r = 2; break;
|
---|
| 6098 |
|
---|
| 6099 | case 'O' : /* Octal */
|
---|
| 6100 | r = 8; break;
|
---|
| 6101 |
|
---|
| 6102 | case 'D' : /* Signed decimal */
|
---|
| 6103 | case 'U' : /* Unsigned decimal */
|
---|
| 6104 | r = 10; break;
|
---|
| 6105 |
|
---|
| 6106 | case 'X' : /* Hexdecimal */
|
---|
| 6107 | r = 16; break;
|
---|
| 6108 |
|
---|
| 6109 | default: /* Unknown type (pass-through) */
|
---|
| 6110 | putc_bfd(&pb, c); continue;
|
---|
| 6111 | }
|
---|
| 6112 |
|
---|
| 6113 | /* Get an argument and put it in numeral */
|
---|
| 6114 | v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
|
---|
| 6115 | if (d == 'D' && (v & 0x80000000)) {
|
---|
| 6116 | v = 0 - v;
|
---|
| 6117 | f |= 8;
|
---|
| 6118 | }
|
---|
| 6119 | i = 0;
|
---|
| 6120 | do {
|
---|
| 6121 | d = (TCHAR)(v % r); v /= r;
|
---|
| 6122 | if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
|
---|
| 6123 | str[i++] = d + '0';
|
---|
| 6124 | } while (v && i < sizeof str / sizeof str[0]);
|
---|
| 6125 | if (f & 8) str[i++] = '-';
|
---|
| 6126 | j = i; d = (f & 1) ? '0' : ' ';
|
---|
| 6127 | while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
|
---|
| 6128 | do {
|
---|
| 6129 | putc_bfd(&pb, str[--i]);
|
---|
| 6130 | } while (i);
|
---|
| 6131 | while (j++ < w) putc_bfd(&pb, d);
|
---|
| 6132 | }
|
---|
| 6133 |
|
---|
| 6134 | va_end(arp);
|
---|
| 6135 |
|
---|
| 6136 | return putc_flush(&pb);
|
---|
| 6137 | }
|
---|
| 6138 |
|
---|
| 6139 | #endif /* !_FS_READONLY */
|
---|
| 6140 | #endif /* _USE_STRFUNC */
|
---|