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Dependencies:   mbed

FatFS/ff.c@0:f24ba3a89ec1, 2015-09-30 (annotated)

Committer:
danghuutoan
Date:
Wed Sep 30 10:12:16 2015 +0000
Revision:
0:f24ba3a89ec1
read and write file successfully

Who changed what in which revision?

UserRevisionLine numberNew contents of line
danghuutoan 0:f24ba3a89ec1 1 /*----------------------------------------------------------------------------/
danghuutoan 0:f24ba3a89ec1 2 / FatFs - FAT file system module R0.11a (C)ChaN, 2015 /
danghuutoan 0:f24ba3a89ec1 3 /-----------------------------------------------------------------------------/
danghuutoan 0:f24ba3a89ec1 4 / FatFs module is a free software that opened under license policy of
danghuutoan 0:f24ba3a89ec1 5 / following conditions.
danghuutoan 0:f24ba3a89ec1 6 /
danghuutoan 0:f24ba3a89ec1 7 / Copyright (C) 2015, ChaN, all right reserved.
danghuutoan 0:f24ba3a89ec1 8 /
danghuutoan 0:f24ba3a89ec1 9 / 1. Redistributions of source code must retain the above copyright notice,
danghuutoan 0:f24ba3a89ec1 10 / this condition and the following disclaimer.
danghuutoan 0:f24ba3a89ec1 11 /
danghuutoan 0:f24ba3a89ec1 12 / This software is provided by the copyright holder and contributors "AS IS"
danghuutoan 0:f24ba3a89ec1 13 / and any warranties related to this software are DISCLAIMED.
danghuutoan 0:f24ba3a89ec1 14 / The copyright owner or contributors be NOT LIABLE for any damages caused
danghuutoan 0:f24ba3a89ec1 15 / by use of this software.
danghuutoan 0:f24ba3a89ec1 16 /----------------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 17
danghuutoan 0:f24ba3a89ec1 18
danghuutoan 0:f24ba3a89ec1 19 #include "ff.h" /* Declarations of FatFs API */
danghuutoan 0:f24ba3a89ec1 20 #include "diskio.h" /* Declarations of disk I/O functions */
danghuutoan 0:f24ba3a89ec1 21
danghuutoan 0:f24ba3a89ec1 22
danghuutoan 0:f24ba3a89ec1 23 /*--------------------------------------------------------------------------
danghuutoan 0:f24ba3a89ec1 24
danghuutoan 0:f24ba3a89ec1 25 Module Private Definitions
danghuutoan 0:f24ba3a89ec1 26
danghuutoan 0:f24ba3a89ec1 27 ---------------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 28
danghuutoan 0:f24ba3a89ec1 29 #if _FATFS != 64180 /* Revision ID */
danghuutoan 0:f24ba3a89ec1 30 #error Wrong include file (ff.h).
danghuutoan 0:f24ba3a89ec1 31 #endif
danghuutoan 0:f24ba3a89ec1 32
danghuutoan 0:f24ba3a89ec1 33
danghuutoan 0:f24ba3a89ec1 34 /* Reentrancy related */
danghuutoan 0:f24ba3a89ec1 35 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 36 #if _USE_LFN == 1
danghuutoan 0:f24ba3a89ec1 37 #error Static LFN work area cannot be used at thread-safe configuration
danghuutoan 0:f24ba3a89ec1 38 #endif
danghuutoan 0:f24ba3a89ec1 39 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
danghuutoan 0:f24ba3a89ec1 40 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
danghuutoan 0:f24ba3a89ec1 41 #else
danghuutoan 0:f24ba3a89ec1 42 #define ENTER_FF(fs)
danghuutoan 0:f24ba3a89ec1 43 #define LEAVE_FF(fs, res) return res
danghuutoan 0:f24ba3a89ec1 44 #endif
danghuutoan 0:f24ba3a89ec1 45
danghuutoan 0:f24ba3a89ec1 46 #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
danghuutoan 0:f24ba3a89ec1 47
danghuutoan 0:f24ba3a89ec1 48
danghuutoan 0:f24ba3a89ec1 49 /* Definitions of sector size */
danghuutoan 0:f24ba3a89ec1 50 #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)
danghuutoan 0:f24ba3a89ec1 51 #error Wrong sector size configuration
danghuutoan 0:f24ba3a89ec1 52 #endif
danghuutoan 0:f24ba3a89ec1 53 #if _MAX_SS == _MIN_SS
danghuutoan 0:f24ba3a89ec1 54 #define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
danghuutoan 0:f24ba3a89ec1 55 #else
danghuutoan 0:f24ba3a89ec1 56 #define SS(fs) ((fs)->ssize) /* Variable sector size */
danghuutoan 0:f24ba3a89ec1 57 #endif
danghuutoan 0:f24ba3a89ec1 58
danghuutoan 0:f24ba3a89ec1 59
danghuutoan 0:f24ba3a89ec1 60 /* Timestamp feature */
danghuutoan 0:f24ba3a89ec1 61 #if _FS_NORTC == 1
danghuutoan 0:f24ba3a89ec1 62 #if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
danghuutoan 0:f24ba3a89ec1 63 #error Invalid _FS_NORTC settings
danghuutoan 0:f24ba3a89ec1 64 #endif
danghuutoan 0:f24ba3a89ec1 65 #define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
danghuutoan 0:f24ba3a89ec1 66 #else
danghuutoan 0:f24ba3a89ec1 67 #define GET_FATTIME() get_fattime()
danghuutoan 0:f24ba3a89ec1 68 #endif
danghuutoan 0:f24ba3a89ec1 69
danghuutoan 0:f24ba3a89ec1 70
danghuutoan 0:f24ba3a89ec1 71 /* File access control feature */
danghuutoan 0:f24ba3a89ec1 72 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 73 #if _FS_READONLY
danghuutoan 0:f24ba3a89ec1 74 #error _FS_LOCK must be 0 at read-only configuration
danghuutoan 0:f24ba3a89ec1 75 #endif
danghuutoan 0:f24ba3a89ec1 76 typedef struct {
danghuutoan 0:f24ba3a89ec1 77 FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */
danghuutoan 0:f24ba3a89ec1 78 DWORD clu; /* Object ID 2, directory (0:root) */
danghuutoan 0:f24ba3a89ec1 79 WORD idx; /* Object ID 3, directory index */
danghuutoan 0:f24ba3a89ec1 80 WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
danghuutoan 0:f24ba3a89ec1 81 } FILESEM;
danghuutoan 0:f24ba3a89ec1 82 #endif
danghuutoan 0:f24ba3a89ec1 83
danghuutoan 0:f24ba3a89ec1 84
danghuutoan 0:f24ba3a89ec1 85
danghuutoan 0:f24ba3a89ec1 86 /* DBCS code ranges and SBCS upper conversion tables */
danghuutoan 0:f24ba3a89ec1 87
danghuutoan 0:f24ba3a89ec1 88 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
danghuutoan 0:f24ba3a89ec1 89 #define _DF1S 0x81 /* DBC 1st byte range 1 start */
danghuutoan 0:f24ba3a89ec1 90 #define _DF1E 0x9F /* DBC 1st byte range 1 end */
danghuutoan 0:f24ba3a89ec1 91 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
danghuutoan 0:f24ba3a89ec1 92 #define _DF2E 0xFC /* DBC 1st byte range 2 end */
danghuutoan 0:f24ba3a89ec1 93 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
danghuutoan 0:f24ba3a89ec1 94 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
danghuutoan 0:f24ba3a89ec1 95 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
danghuutoan 0:f24ba3a89ec1 96 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
danghuutoan 0:f24ba3a89ec1 97
danghuutoan 0:f24ba3a89ec1 98 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
danghuutoan 0:f24ba3a89ec1 99 #define _DF1S 0x81
danghuutoan 0:f24ba3a89ec1 100 #define _DF1E 0xFE
danghuutoan 0:f24ba3a89ec1 101 #define _DS1S 0x40
danghuutoan 0:f24ba3a89ec1 102 #define _DS1E 0x7E
danghuutoan 0:f24ba3a89ec1 103 #define _DS2S 0x80
danghuutoan 0:f24ba3a89ec1 104 #define _DS2E 0xFE
danghuutoan 0:f24ba3a89ec1 105
danghuutoan 0:f24ba3a89ec1 106 #elif _CODE_PAGE == 949 /* Korean */
danghuutoan 0:f24ba3a89ec1 107 #define _DF1S 0x81
danghuutoan 0:f24ba3a89ec1 108 #define _DF1E 0xFE
danghuutoan 0:f24ba3a89ec1 109 #define _DS1S 0x41
danghuutoan 0:f24ba3a89ec1 110 #define _DS1E 0x5A
danghuutoan 0:f24ba3a89ec1 111 #define _DS2S 0x61
danghuutoan 0:f24ba3a89ec1 112 #define _DS2E 0x7A
danghuutoan 0:f24ba3a89ec1 113 #define _DS3S 0x81
danghuutoan 0:f24ba3a89ec1 114 #define _DS3E 0xFE
danghuutoan 0:f24ba3a89ec1 115
danghuutoan 0:f24ba3a89ec1 116 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
danghuutoan 0:f24ba3a89ec1 117 #define _DF1S 0x81
danghuutoan 0:f24ba3a89ec1 118 #define _DF1E 0xFE
danghuutoan 0:f24ba3a89ec1 119 #define _DS1S 0x40
danghuutoan 0:f24ba3a89ec1 120 #define _DS1E 0x7E
danghuutoan 0:f24ba3a89ec1 121 #define _DS2S 0xA1
danghuutoan 0:f24ba3a89ec1 122 #define _DS2E 0xFE
danghuutoan 0:f24ba3a89ec1 123
danghuutoan 0:f24ba3a89ec1 124 #elif _CODE_PAGE == 437 /* U.S. */
danghuutoan 0:f24ba3a89ec1 125 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 126 #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 127 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 128 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 129 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 130 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 131 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 132 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 133 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 134
danghuutoan 0:f24ba3a89ec1 135 #elif _CODE_PAGE == 720 /* Arabic */
danghuutoan 0:f24ba3a89ec1 136 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 137 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 138 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 139 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 140 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 141 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 142 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 143 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 144 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 145
danghuutoan 0:f24ba3a89ec1 146 #elif _CODE_PAGE == 737 /* Greek */
danghuutoan 0:f24ba3a89ec1 147 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 148 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 149 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
danghuutoan 0:f24ba3a89ec1 150 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
danghuutoan 0:f24ba3a89ec1 151 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 152 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 153 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 154 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 155 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 156
danghuutoan 0:f24ba3a89ec1 157 #elif _CODE_PAGE == 771 /* KBL */
danghuutoan 0:f24ba3a89ec1 158 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 159 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 160 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 161 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 162 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 163 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 164 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
danghuutoan 0:f24ba3a89ec1 165 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 166 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 167
danghuutoan 0:f24ba3a89ec1 168 #elif _CODE_PAGE == 775 /* Baltic */
danghuutoan 0:f24ba3a89ec1 169 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 170 #define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 171 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 172 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 173 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 174 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 175 0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 176 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 177 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 178
danghuutoan 0:f24ba3a89ec1 179 #elif _CODE_PAGE == 850 /* Latin 1 */
danghuutoan 0:f24ba3a89ec1 180 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 181 #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
danghuutoan 0:f24ba3a89ec1 182 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 183 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 184 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 185 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 186 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
danghuutoan 0:f24ba3a89ec1 187 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 188 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 189
danghuutoan 0:f24ba3a89ec1 190 #elif _CODE_PAGE == 852 /* Latin 2 */
danghuutoan 0:f24ba3a89ec1 191 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 192 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 193 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
danghuutoan 0:f24ba3a89ec1 194 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 195 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
danghuutoan 0:f24ba3a89ec1 196 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 197 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 198 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
danghuutoan 0:f24ba3a89ec1 199 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 200
danghuutoan 0:f24ba3a89ec1 201 #elif _CODE_PAGE == 855 /* Cyrillic */
danghuutoan 0:f24ba3a89ec1 202 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 203 #define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
danghuutoan 0:f24ba3a89ec1 204 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
danghuutoan 0:f24ba3a89ec1 205 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 206 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 207 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 208 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
danghuutoan 0:f24ba3a89ec1 209 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 210 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 211
danghuutoan 0:f24ba3a89ec1 212 #elif _CODE_PAGE == 857 /* Turkish */
danghuutoan 0:f24ba3a89ec1 213 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 214 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 215 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
danghuutoan 0:f24ba3a89ec1 216 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 217 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 218 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 219 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 220 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 221 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 222
danghuutoan 0:f24ba3a89ec1 223 #elif _CODE_PAGE == 860 /* Portuguese */
danghuutoan 0:f24ba3a89ec1 224 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 225 #define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 226 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 227 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 228 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 229 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 230 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 231 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 232 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 233
danghuutoan 0:f24ba3a89ec1 234 #elif _CODE_PAGE == 861 /* Icelandic */
danghuutoan 0:f24ba3a89ec1 235 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 236 #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 237 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 238 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 239 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 240 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 241 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 242 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 243 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 244
danghuutoan 0:f24ba3a89ec1 245 #elif _CODE_PAGE == 862 /* Hebrew */
danghuutoan 0:f24ba3a89ec1 246 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 247 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 248 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 249 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 250 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 251 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 252 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 253 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 254 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 255
danghuutoan 0:f24ba3a89ec1 256 #elif _CODE_PAGE == 863 /* Canadian-French */
danghuutoan 0:f24ba3a89ec1 257 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 258 #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
danghuutoan 0:f24ba3a89ec1 259 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
danghuutoan 0:f24ba3a89ec1 260 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 261 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 262 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 263 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 264 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 265 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 266
danghuutoan 0:f24ba3a89ec1 267 #elif _CODE_PAGE == 864 /* Arabic */
danghuutoan 0:f24ba3a89ec1 268 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 269 #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 270 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 271 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 272 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 273 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 274 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 275 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 276 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 277
danghuutoan 0:f24ba3a89ec1 278 #elif _CODE_PAGE == 865 /* Nordic */
danghuutoan 0:f24ba3a89ec1 279 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 280 #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 281 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 282 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 283 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 284 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 285 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 286 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
danghuutoan 0:f24ba3a89ec1 287 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 288
danghuutoan 0:f24ba3a89ec1 289 #elif _CODE_PAGE == 866 /* Russian */
danghuutoan 0:f24ba3a89ec1 290 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 291 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 292 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 293 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 294 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 295 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 296 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
danghuutoan 0:f24ba3a89ec1 297 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
danghuutoan 0:f24ba3a89ec1 298 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 299
danghuutoan 0:f24ba3a89ec1 300 #elif _CODE_PAGE == 869 /* Greek 2 */
danghuutoan 0:f24ba3a89ec1 301 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 302 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
danghuutoan 0:f24ba3a89ec1 303 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
danghuutoan 0:f24ba3a89ec1 304 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
danghuutoan 0:f24ba3a89ec1 305 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
danghuutoan 0:f24ba3a89ec1 306 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
danghuutoan 0:f24ba3a89ec1 307 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
danghuutoan 0:f24ba3a89ec1 308 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
danghuutoan 0:f24ba3a89ec1 309 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
danghuutoan 0:f24ba3a89ec1 310
danghuutoan 0:f24ba3a89ec1 311 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
danghuutoan 0:f24ba3a89ec1 312 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 313 #error Cannot use LFN feature without valid code page.
danghuutoan 0:f24ba3a89ec1 314 #endif
danghuutoan 0:f24ba3a89ec1 315 #define _DF1S 0
danghuutoan 0:f24ba3a89ec1 316
danghuutoan 0:f24ba3a89ec1 317 #else
danghuutoan 0:f24ba3a89ec1 318 #error Unknown code page
danghuutoan 0:f24ba3a89ec1 319
danghuutoan 0:f24ba3a89ec1 320 #endif
danghuutoan 0:f24ba3a89ec1 321
danghuutoan 0:f24ba3a89ec1 322
danghuutoan 0:f24ba3a89ec1 323 /* Character code support macros */
danghuutoan 0:f24ba3a89ec1 324 #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
danghuutoan 0:f24ba3a89ec1 325 #define IsLower(c) (((c)>='a')&&((c)<='z'))
danghuutoan 0:f24ba3a89ec1 326 #define IsDigit(c) (((c)>='0')&&((c)<='9'))
danghuutoan 0:f24ba3a89ec1 327
danghuutoan 0:f24ba3a89ec1 328 #if _DF1S /* Code page is DBCS */
danghuutoan 0:f24ba3a89ec1 329
danghuutoan 0:f24ba3a89ec1 330 #ifdef _DF2S /* Two 1st byte areas */
danghuutoan 0:f24ba3a89ec1 331 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
danghuutoan 0:f24ba3a89ec1 332 #else /* One 1st byte area */
danghuutoan 0:f24ba3a89ec1 333 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
danghuutoan 0:f24ba3a89ec1 334 #endif
danghuutoan 0:f24ba3a89ec1 335
danghuutoan 0:f24ba3a89ec1 336 #ifdef _DS3S /* Three 2nd byte areas */
danghuutoan 0:f24ba3a89ec1 337 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
danghuutoan 0:f24ba3a89ec1 338 #else /* Two 2nd byte areas */
danghuutoan 0:f24ba3a89ec1 339 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
danghuutoan 0:f24ba3a89ec1 340 #endif
danghuutoan 0:f24ba3a89ec1 341
danghuutoan 0:f24ba3a89ec1 342 #else /* Code page is SBCS */
danghuutoan 0:f24ba3a89ec1 343
danghuutoan 0:f24ba3a89ec1 344 #define IsDBCS1(c) 0
danghuutoan 0:f24ba3a89ec1 345 #define IsDBCS2(c) 0
danghuutoan 0:f24ba3a89ec1 346
danghuutoan 0:f24ba3a89ec1 347 #endif /* _DF1S */
danghuutoan 0:f24ba3a89ec1 348
danghuutoan 0:f24ba3a89ec1 349
danghuutoan 0:f24ba3a89ec1 350 /* Name status flags */
danghuutoan 0:f24ba3a89ec1 351 #define NSFLAG 11 /* Index of name status byte in fn[] */
danghuutoan 0:f24ba3a89ec1 352 #define NS_LOSS 0x01 /* Out of 8.3 format */
danghuutoan 0:f24ba3a89ec1 353 #define NS_LFN 0x02 /* Force to create LFN entry */
danghuutoan 0:f24ba3a89ec1 354 #define NS_LAST 0x04 /* Last segment */
danghuutoan 0:f24ba3a89ec1 355 #define NS_BODY 0x08 /* Lower case flag (body) */
danghuutoan 0:f24ba3a89ec1 356 #define NS_EXT 0x10 /* Lower case flag (ext) */
danghuutoan 0:f24ba3a89ec1 357 #define NS_DOT 0x20 /* Dot entry */
danghuutoan 0:f24ba3a89ec1 358
danghuutoan 0:f24ba3a89ec1 359
danghuutoan 0:f24ba3a89ec1 360 /* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
danghuutoan 0:f24ba3a89ec1 361 #define MIN_FAT16 4086U /* Minimum number of clusters of FAT16 */
danghuutoan 0:f24ba3a89ec1 362 #define MIN_FAT32 65526U /* Minimum number of clusters of FAT32 */
danghuutoan 0:f24ba3a89ec1 363
danghuutoan 0:f24ba3a89ec1 364
danghuutoan 0:f24ba3a89ec1 365 /* FatFs refers the members in the FAT structures as byte array instead of
danghuutoan 0:f24ba3a89ec1 366 / structure members because the structure is not binary compatible between
danghuutoan 0:f24ba3a89ec1 367 / different platforms */
danghuutoan 0:f24ba3a89ec1 368
danghuutoan 0:f24ba3a89ec1 369 #define BS_jmpBoot 0 /* x86 jump instruction (3) */
danghuutoan 0:f24ba3a89ec1 370 #define BS_OEMName 3 /* OEM name (8) */
danghuutoan 0:f24ba3a89ec1 371 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
danghuutoan 0:f24ba3a89ec1 372 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
danghuutoan 0:f24ba3a89ec1 373 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
danghuutoan 0:f24ba3a89ec1 374 #define BPB_NumFATs 16 /* Number of FAT copies (1) */
danghuutoan 0:f24ba3a89ec1 375 #define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */
danghuutoan 0:f24ba3a89ec1 376 #define BPB_TotSec16 19 /* Volume size [sector] (2) */
danghuutoan 0:f24ba3a89ec1 377 #define BPB_Media 21 /* Media descriptor (1) */
danghuutoan 0:f24ba3a89ec1 378 #define BPB_FATSz16 22 /* FAT size [sector] (2) */
danghuutoan 0:f24ba3a89ec1 379 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */
danghuutoan 0:f24ba3a89ec1 380 #define BPB_NumHeads 26 /* Number of heads (2) */
danghuutoan 0:f24ba3a89ec1 381 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
danghuutoan 0:f24ba3a89ec1 382 #define BPB_TotSec32 32 /* Volume size [sector] (4) */
danghuutoan 0:f24ba3a89ec1 383 #define BS_DrvNum 36 /* Physical drive number (1) */
danghuutoan 0:f24ba3a89ec1 384 #define BS_NTres 37 /* Error flag (1) */
danghuutoan 0:f24ba3a89ec1 385 #define BS_BootSig 38 /* Extended boot signature (1) */
danghuutoan 0:f24ba3a89ec1 386 #define BS_VolID 39 /* Volume serial number (4) */
danghuutoan 0:f24ba3a89ec1 387 #define BS_VolLab 43 /* Volume label (8) */
danghuutoan 0:f24ba3a89ec1 388 #define BS_FilSysType 54 /* File system type (1) */
danghuutoan 0:f24ba3a89ec1 389 #define BPB_FATSz32 36 /* FAT size [sector] (4) */
danghuutoan 0:f24ba3a89ec1 390 #define BPB_ExtFlags 40 /* Extended flags (2) */
danghuutoan 0:f24ba3a89ec1 391 #define BPB_FSVer 42 /* File system version (2) */
danghuutoan 0:f24ba3a89ec1 392 #define BPB_RootClus 44 /* Root directory first cluster (4) */
danghuutoan 0:f24ba3a89ec1 393 #define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */
danghuutoan 0:f24ba3a89ec1 394 #define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
danghuutoan 0:f24ba3a89ec1 395 #define BS_DrvNum32 64 /* Physical drive number (1) */
danghuutoan 0:f24ba3a89ec1 396 #define BS_NTres32 65 /* Error flag (1) */
danghuutoan 0:f24ba3a89ec1 397 #define BS_BootSig32 66 /* Extended boot signature (1) */
danghuutoan 0:f24ba3a89ec1 398 #define BS_VolID32 67 /* Volume serial number (4) */
danghuutoan 0:f24ba3a89ec1 399 #define BS_VolLab32 71 /* Volume label (8) */
danghuutoan 0:f24ba3a89ec1 400 #define BS_FilSysType32 82 /* File system type (1) */
danghuutoan 0:f24ba3a89ec1 401 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */
danghuutoan 0:f24ba3a89ec1 402 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */
danghuutoan 0:f24ba3a89ec1 403 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
danghuutoan 0:f24ba3a89ec1 404 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
danghuutoan 0:f24ba3a89ec1 405 #define MBR_Table 446 /* MBR: Partition table offset (2) */
danghuutoan 0:f24ba3a89ec1 406 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
danghuutoan 0:f24ba3a89ec1 407 #define BS_55AA 510 /* Signature word (2) */
danghuutoan 0:f24ba3a89ec1 408
danghuutoan 0:f24ba3a89ec1 409 #define DIR_Name 0 /* Short file name (11) */
danghuutoan 0:f24ba3a89ec1 410 #define DIR_Attr 11 /* Attribute (1) */
danghuutoan 0:f24ba3a89ec1 411 #define DIR_NTres 12 /* Lower case flag (1) */
danghuutoan 0:f24ba3a89ec1 412 #define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
danghuutoan 0:f24ba3a89ec1 413 #define DIR_CrtTime 14 /* Created time (2) */
danghuutoan 0:f24ba3a89ec1 414 #define DIR_CrtDate 16 /* Created date (2) */
danghuutoan 0:f24ba3a89ec1 415 #define DIR_LstAccDate 18 /* Last accessed date (2) */
danghuutoan 0:f24ba3a89ec1 416 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
danghuutoan 0:f24ba3a89ec1 417 #define DIR_WrtTime 22 /* Modified time (2) */
danghuutoan 0:f24ba3a89ec1 418 #define DIR_WrtDate 24 /* Modified date (2) */
danghuutoan 0:f24ba3a89ec1 419 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
danghuutoan 0:f24ba3a89ec1 420 #define DIR_FileSize 28 /* File size (4) */
danghuutoan 0:f24ba3a89ec1 421 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
danghuutoan 0:f24ba3a89ec1 422 #define LDIR_Attr 11 /* LFN attribute (1) */
danghuutoan 0:f24ba3a89ec1 423 #define LDIR_Type 12 /* LFN type (1) */
danghuutoan 0:f24ba3a89ec1 424 #define LDIR_Chksum 13 /* Checksum of corresponding SFN entry */
danghuutoan 0:f24ba3a89ec1 425 #define LDIR_FstClusLO 26 /* Must be zero (0) */
danghuutoan 0:f24ba3a89ec1 426 #define SZ_DIRE 32 /* Size of a directory entry */
danghuutoan 0:f24ba3a89ec1 427 #define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
danghuutoan 0:f24ba3a89ec1 428 #define DDEM 0xE5 /* Deleted directory entry mark at DIR_Name[0] */
danghuutoan 0:f24ba3a89ec1 429 #define RDDEM 0x05 /* Replacement of the character collides with DDEM */
danghuutoan 0:f24ba3a89ec1 430
danghuutoan 0:f24ba3a89ec1 431
danghuutoan 0:f24ba3a89ec1 432
danghuutoan 0:f24ba3a89ec1 433
danghuutoan 0:f24ba3a89ec1 434 /*--------------------------------------------------------------------------
danghuutoan 0:f24ba3a89ec1 435
danghuutoan 0:f24ba3a89ec1 436 Module Private Work Area
danghuutoan 0:f24ba3a89ec1 437
danghuutoan 0:f24ba3a89ec1 438 ---------------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 439
danghuutoan 0:f24ba3a89ec1 440 /* Remark: Uninitialized variables with static duration are guaranteed
danghuutoan 0:f24ba3a89ec1 441 / zero/null at start-up. If not, either the linker or start-up routine
danghuutoan 0:f24ba3a89ec1 442 / being used is not compliance with ANSI-C standard.
danghuutoan 0:f24ba3a89ec1 443 */
danghuutoan 0:f24ba3a89ec1 444
danghuutoan 0:f24ba3a89ec1 445 #if _VOLUMES < 1 || _VOLUMES > 9
danghuutoan 0:f24ba3a89ec1 446 #error Wrong _VOLUMES setting
danghuutoan 0:f24ba3a89ec1 447 #endif
danghuutoan 0:f24ba3a89ec1 448 static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
danghuutoan 0:f24ba3a89ec1 449 static WORD Fsid; /* File system mount ID */
danghuutoan 0:f24ba3a89ec1 450
danghuutoan 0:f24ba3a89ec1 451 #if _FS_RPATH && _VOLUMES >= 2
danghuutoan 0:f24ba3a89ec1 452 static BYTE CurrVol; /* Current drive */
danghuutoan 0:f24ba3a89ec1 453 #endif
danghuutoan 0:f24ba3a89ec1 454
danghuutoan 0:f24ba3a89ec1 455 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 456 static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
danghuutoan 0:f24ba3a89ec1 457 #endif
danghuutoan 0:f24ba3a89ec1 458
danghuutoan 0:f24ba3a89ec1 459 #if _USE_LFN == 0 /* Non LFN feature */
danghuutoan 0:f24ba3a89ec1 460 #define DEFINE_NAMEBUF BYTE sfn[12]
danghuutoan 0:f24ba3a89ec1 461 #define INIT_BUF(dobj) (dobj).fn = sfn
danghuutoan 0:f24ba3a89ec1 462 #define FREE_BUF()
danghuutoan 0:f24ba3a89ec1 463 #else
danghuutoan 0:f24ba3a89ec1 464 #if _MAX_LFN < 12 || _MAX_LFN > 255
danghuutoan 0:f24ba3a89ec1 465 #error Wrong _MAX_LFN setting
danghuutoan 0:f24ba3a89ec1 466 #endif
danghuutoan 0:f24ba3a89ec1 467 #if _USE_LFN == 1 /* LFN feature with static working buffer */
danghuutoan 0:f24ba3a89ec1 468 static WCHAR LfnBuf[_MAX_LFN + 1];
danghuutoan 0:f24ba3a89ec1 469 #define DEFINE_NAMEBUF BYTE sfn[12]
danghuutoan 0:f24ba3a89ec1 470 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
danghuutoan 0:f24ba3a89ec1 471 #define FREE_BUF()
danghuutoan 0:f24ba3a89ec1 472 #elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
danghuutoan 0:f24ba3a89ec1 473 #define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
danghuutoan 0:f24ba3a89ec1 474 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
danghuutoan 0:f24ba3a89ec1 475 #define FREE_BUF()
danghuutoan 0:f24ba3a89ec1 476 #elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
danghuutoan 0:f24ba3a89ec1 477 #define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR *lfn
danghuutoan 0:f24ba3a89ec1 478 #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); (dobj).lfn = lfn; (dobj).fn = sfn; }
danghuutoan 0:f24ba3a89ec1 479 #define FREE_BUF() ff_memfree(lfn)
danghuutoan 0:f24ba3a89ec1 480 #else
danghuutoan 0:f24ba3a89ec1 481 #error Wrong _USE_LFN setting
danghuutoan 0:f24ba3a89ec1 482 #endif
danghuutoan 0:f24ba3a89ec1 483 #endif
danghuutoan 0:f24ba3a89ec1 484
danghuutoan 0:f24ba3a89ec1 485 #ifdef _EXCVT
danghuutoan 0:f24ba3a89ec1 486 static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
danghuutoan 0:f24ba3a89ec1 487 #endif
danghuutoan 0:f24ba3a89ec1 488
danghuutoan 0:f24ba3a89ec1 489
danghuutoan 0:f24ba3a89ec1 490
danghuutoan 0:f24ba3a89ec1 491
danghuutoan 0:f24ba3a89ec1 492
danghuutoan 0:f24ba3a89ec1 493
danghuutoan 0:f24ba3a89ec1 494 /*--------------------------------------------------------------------------
danghuutoan 0:f24ba3a89ec1 495
danghuutoan 0:f24ba3a89ec1 496 Module Private Functions
danghuutoan 0:f24ba3a89ec1 497
danghuutoan 0:f24ba3a89ec1 498 ---------------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 499
danghuutoan 0:f24ba3a89ec1 500
danghuutoan 0:f24ba3a89ec1 501 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 502 /* String functions */
danghuutoan 0:f24ba3a89ec1 503 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 504
danghuutoan 0:f24ba3a89ec1 505 /* Copy memory to memory */
danghuutoan 0:f24ba3a89ec1 506 static
danghuutoan 0:f24ba3a89ec1 507 void mem_cpy (void* dst, const void* src, UINT cnt) {
danghuutoan 0:f24ba3a89ec1 508 BYTE *d = (BYTE*)dst;
danghuutoan 0:f24ba3a89ec1 509 const BYTE *s = (const BYTE*)src;
danghuutoan 0:f24ba3a89ec1 510
danghuutoan 0:f24ba3a89ec1 511 #if _WORD_ACCESS == 1
danghuutoan 0:f24ba3a89ec1 512 while (cnt >= sizeof (int)) {
danghuutoan 0:f24ba3a89ec1 513 *(int*)d = *(int*)s;
danghuutoan 0:f24ba3a89ec1 514 d += sizeof (int); s += sizeof (int);
danghuutoan 0:f24ba3a89ec1 515 cnt -= sizeof (int);
danghuutoan 0:f24ba3a89ec1 516 }
danghuutoan 0:f24ba3a89ec1 517 #endif
danghuutoan 0:f24ba3a89ec1 518 while (cnt--)
danghuutoan 0:f24ba3a89ec1 519 *d++ = *s++;
danghuutoan 0:f24ba3a89ec1 520 }
danghuutoan 0:f24ba3a89ec1 521
danghuutoan 0:f24ba3a89ec1 522 /* Fill memory */
danghuutoan 0:f24ba3a89ec1 523 static
danghuutoan 0:f24ba3a89ec1 524 void mem_set (void* dst, int val, UINT cnt) {
danghuutoan 0:f24ba3a89ec1 525 BYTE *d = (BYTE*)dst;
danghuutoan 0:f24ba3a89ec1 526
danghuutoan 0:f24ba3a89ec1 527 while (cnt--)
danghuutoan 0:f24ba3a89ec1 528 *d++ = (BYTE)val;
danghuutoan 0:f24ba3a89ec1 529 }
danghuutoan 0:f24ba3a89ec1 530
danghuutoan 0:f24ba3a89ec1 531 /* Compare memory to memory */
danghuutoan 0:f24ba3a89ec1 532 static
danghuutoan 0:f24ba3a89ec1 533 int mem_cmp (const void* dst, const void* src, UINT cnt) {
danghuutoan 0:f24ba3a89ec1 534 const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
danghuutoan 0:f24ba3a89ec1 535 int r = 0;
danghuutoan 0:f24ba3a89ec1 536
danghuutoan 0:f24ba3a89ec1 537 while (cnt-- && (r = *d++ - *s++) == 0) ;
danghuutoan 0:f24ba3a89ec1 538 return r;
danghuutoan 0:f24ba3a89ec1 539 }
danghuutoan 0:f24ba3a89ec1 540
danghuutoan 0:f24ba3a89ec1 541 /* Check if chr is contained in the string */
danghuutoan 0:f24ba3a89ec1 542 static
danghuutoan 0:f24ba3a89ec1 543 int chk_chr (const char* str, int chr) {
danghuutoan 0:f24ba3a89ec1 544 while (*str && *str != chr) str++;
danghuutoan 0:f24ba3a89ec1 545 return *str;
danghuutoan 0:f24ba3a89ec1 546 }
danghuutoan 0:f24ba3a89ec1 547
danghuutoan 0:f24ba3a89ec1 548
danghuutoan 0:f24ba3a89ec1 549
danghuutoan 0:f24ba3a89ec1 550
danghuutoan 0:f24ba3a89ec1 551 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 552 /* Request/Release grant to access the volume */
danghuutoan 0:f24ba3a89ec1 553 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 554 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 555 static
danghuutoan 0:f24ba3a89ec1 556 int lock_fs (
danghuutoan 0:f24ba3a89ec1 557 FATFS* fs /* File system object */
danghuutoan 0:f24ba3a89ec1 558 )
danghuutoan 0:f24ba3a89ec1 559 {
danghuutoan 0:f24ba3a89ec1 560 return ff_req_grant(fs->sobj);
danghuutoan 0:f24ba3a89ec1 561 }
danghuutoan 0:f24ba3a89ec1 562
danghuutoan 0:f24ba3a89ec1 563
danghuutoan 0:f24ba3a89ec1 564 static
danghuutoan 0:f24ba3a89ec1 565 void unlock_fs (
danghuutoan 0:f24ba3a89ec1 566 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 567 FRESULT res /* Result code to be returned */
danghuutoan 0:f24ba3a89ec1 568 )
danghuutoan 0:f24ba3a89ec1 569 {
danghuutoan 0:f24ba3a89ec1 570 if (fs &&
danghuutoan 0:f24ba3a89ec1 571 res != FR_NOT_ENABLED &&
danghuutoan 0:f24ba3a89ec1 572 res != FR_INVALID_DRIVE &&
danghuutoan 0:f24ba3a89ec1 573 res != FR_INVALID_OBJECT &&
danghuutoan 0:f24ba3a89ec1 574 res != FR_TIMEOUT) {
danghuutoan 0:f24ba3a89ec1 575 ff_rel_grant(fs->sobj);
danghuutoan 0:f24ba3a89ec1 576 }
danghuutoan 0:f24ba3a89ec1 577 }
danghuutoan 0:f24ba3a89ec1 578 #endif
danghuutoan 0:f24ba3a89ec1 579
danghuutoan 0:f24ba3a89ec1 580
danghuutoan 0:f24ba3a89ec1 581
danghuutoan 0:f24ba3a89ec1 582
danghuutoan 0:f24ba3a89ec1 583 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 584 /* File lock control functions */
danghuutoan 0:f24ba3a89ec1 585 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 586 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 587
danghuutoan 0:f24ba3a89ec1 588 static
danghuutoan 0:f24ba3a89ec1 589 FRESULT chk_lock ( /* Check if the file can be accessed */
danghuutoan 0:f24ba3a89ec1 590 DIR* dp, /* Directory object pointing the file to be checked */
danghuutoan 0:f24ba3a89ec1 591 int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
danghuutoan 0:f24ba3a89ec1 592 )
danghuutoan 0:f24ba3a89ec1 593 {
danghuutoan 0:f24ba3a89ec1 594 UINT i, be;
danghuutoan 0:f24ba3a89ec1 595
danghuutoan 0:f24ba3a89ec1 596 /* Search file semaphore table */
danghuutoan 0:f24ba3a89ec1 597 for (i = be = 0; i < _FS_LOCK; i++) {
danghuutoan 0:f24ba3a89ec1 598 if (Files[i].fs) { /* Existing entry */
danghuutoan 0:f24ba3a89ec1 599 if (Files[i].fs == dp->fs && /* Check if the object matched with an open object */
danghuutoan 0:f24ba3a89ec1 600 Files[i].clu == dp->sclust &&
danghuutoan 0:f24ba3a89ec1 601 Files[i].idx == dp->index) break;
danghuutoan 0:f24ba3a89ec1 602 } else { /* Blank entry */
danghuutoan 0:f24ba3a89ec1 603 be = 1;
danghuutoan 0:f24ba3a89ec1 604 }
danghuutoan 0:f24ba3a89ec1 605 }
danghuutoan 0:f24ba3a89ec1 606 if (i == _FS_LOCK) /* The object is not opened */
danghuutoan 0:f24ba3a89ec1 607 return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */
danghuutoan 0:f24ba3a89ec1 608
danghuutoan 0:f24ba3a89ec1 609 /* The object has been opened. Reject any open against writing file and all write mode open */
danghuutoan 0:f24ba3a89ec1 610 return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
danghuutoan 0:f24ba3a89ec1 611 }
danghuutoan 0:f24ba3a89ec1 612
danghuutoan 0:f24ba3a89ec1 613
danghuutoan 0:f24ba3a89ec1 614 static
danghuutoan 0:f24ba3a89ec1 615 int enq_lock (void) /* Check if an entry is available for a new object */
danghuutoan 0:f24ba3a89ec1 616 {
danghuutoan 0:f24ba3a89ec1 617 UINT i;
danghuutoan 0:f24ba3a89ec1 618
danghuutoan 0:f24ba3a89ec1 619 for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
danghuutoan 0:f24ba3a89ec1 620 return (i == _FS_LOCK) ? 0 : 1;
danghuutoan 0:f24ba3a89ec1 621 }
danghuutoan 0:f24ba3a89ec1 622
danghuutoan 0:f24ba3a89ec1 623
danghuutoan 0:f24ba3a89ec1 624 static
danghuutoan 0:f24ba3a89ec1 625 UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
danghuutoan 0:f24ba3a89ec1 626 DIR* dp, /* Directory object pointing the file to register or increment */
danghuutoan 0:f24ba3a89ec1 627 int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
danghuutoan 0:f24ba3a89ec1 628 )
danghuutoan 0:f24ba3a89ec1 629 {
danghuutoan 0:f24ba3a89ec1 630 UINT i;
danghuutoan 0:f24ba3a89ec1 631
danghuutoan 0:f24ba3a89ec1 632
danghuutoan 0:f24ba3a89ec1 633 for (i = 0; i < _FS_LOCK; i++) { /* Find the object */
danghuutoan 0:f24ba3a89ec1 634 if (Files[i].fs == dp->fs &&
danghuutoan 0:f24ba3a89ec1 635 Files[i].clu == dp->sclust &&
danghuutoan 0:f24ba3a89ec1 636 Files[i].idx == dp->index) break;
danghuutoan 0:f24ba3a89ec1 637 }
danghuutoan 0:f24ba3a89ec1 638
danghuutoan 0:f24ba3a89ec1 639 if (i == _FS_LOCK) { /* Not opened. Register it as new. */
danghuutoan 0:f24ba3a89ec1 640 for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
danghuutoan 0:f24ba3a89ec1 641 if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */
danghuutoan 0:f24ba3a89ec1 642 Files[i].fs = dp->fs;
danghuutoan 0:f24ba3a89ec1 643 Files[i].clu = dp->sclust;
danghuutoan 0:f24ba3a89ec1 644 Files[i].idx = dp->index;
danghuutoan 0:f24ba3a89ec1 645 Files[i].ctr = 0;
danghuutoan 0:f24ba3a89ec1 646 }
danghuutoan 0:f24ba3a89ec1 647
danghuutoan 0:f24ba3a89ec1 648 if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
danghuutoan 0:f24ba3a89ec1 649
danghuutoan 0:f24ba3a89ec1 650 Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
danghuutoan 0:f24ba3a89ec1 651
danghuutoan 0:f24ba3a89ec1 652 return i + 1;
danghuutoan 0:f24ba3a89ec1 653 }
danghuutoan 0:f24ba3a89ec1 654
danghuutoan 0:f24ba3a89ec1 655
danghuutoan 0:f24ba3a89ec1 656 static
danghuutoan 0:f24ba3a89ec1 657 FRESULT dec_lock ( /* Decrement object open counter */
danghuutoan 0:f24ba3a89ec1 658 UINT i /* Semaphore index (1..) */
danghuutoan 0:f24ba3a89ec1 659 )
danghuutoan 0:f24ba3a89ec1 660 {
danghuutoan 0:f24ba3a89ec1 661 WORD n;
danghuutoan 0:f24ba3a89ec1 662 FRESULT res;
danghuutoan 0:f24ba3a89ec1 663
danghuutoan 0:f24ba3a89ec1 664
danghuutoan 0:f24ba3a89ec1 665 if (--i < _FS_LOCK) { /* Shift index number origin from 0 */
danghuutoan 0:f24ba3a89ec1 666 n = Files[i].ctr;
danghuutoan 0:f24ba3a89ec1 667 if (n == 0x100) n = 0; /* If write mode open, delete the entry */
danghuutoan 0:f24ba3a89ec1 668 if (n) n--; /* Decrement read mode open count */
danghuutoan 0:f24ba3a89ec1 669 Files[i].ctr = n;
danghuutoan 0:f24ba3a89ec1 670 if (!n) Files[i].fs = 0; /* Delete the entry if open count gets zero */
danghuutoan 0:f24ba3a89ec1 671 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 672 } else {
danghuutoan 0:f24ba3a89ec1 673 res = FR_INT_ERR; /* Invalid index nunber */
danghuutoan 0:f24ba3a89ec1 674 }
danghuutoan 0:f24ba3a89ec1 675 return res;
danghuutoan 0:f24ba3a89ec1 676 }
danghuutoan 0:f24ba3a89ec1 677
danghuutoan 0:f24ba3a89ec1 678
danghuutoan 0:f24ba3a89ec1 679 static
danghuutoan 0:f24ba3a89ec1 680 void clear_lock ( /* Clear lock entries of the volume */
danghuutoan 0:f24ba3a89ec1 681 FATFS *fs
danghuutoan 0:f24ba3a89ec1 682 )
danghuutoan 0:f24ba3a89ec1 683 {
danghuutoan 0:f24ba3a89ec1 684 UINT i;
danghuutoan 0:f24ba3a89ec1 685
danghuutoan 0:f24ba3a89ec1 686 for (i = 0; i < _FS_LOCK; i++) {
danghuutoan 0:f24ba3a89ec1 687 if (Files[i].fs == fs) Files[i].fs = 0;
danghuutoan 0:f24ba3a89ec1 688 }
danghuutoan 0:f24ba3a89ec1 689 }
danghuutoan 0:f24ba3a89ec1 690 #endif
danghuutoan 0:f24ba3a89ec1 691
danghuutoan 0:f24ba3a89ec1 692
danghuutoan 0:f24ba3a89ec1 693
danghuutoan 0:f24ba3a89ec1 694
danghuutoan 0:f24ba3a89ec1 695 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 696 /* Move/Flush disk access window in the file system object */
danghuutoan 0:f24ba3a89ec1 697 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 698 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 699 static
danghuutoan 0:f24ba3a89ec1 700 FRESULT sync_window ( /* FR_OK:succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 701 FATFS* fs /* File system object */
danghuutoan 0:f24ba3a89ec1 702 )
danghuutoan 0:f24ba3a89ec1 703 {
danghuutoan 0:f24ba3a89ec1 704 DWORD wsect;
danghuutoan 0:f24ba3a89ec1 705 UINT nf;
danghuutoan 0:f24ba3a89ec1 706 FRESULT res = FR_OK;
danghuutoan 0:f24ba3a89ec1 707
danghuutoan 0:f24ba3a89ec1 708
danghuutoan 0:f24ba3a89ec1 709 if (fs->wflag) { /* Write back the sector if it is dirty */
danghuutoan 0:f24ba3a89ec1 710 wsect = fs->winsect; /* Current sector number */
danghuutoan 0:f24ba3a89ec1 711 if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
danghuutoan 0:f24ba3a89ec1 712 res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 713 } else {
danghuutoan 0:f24ba3a89ec1 714 fs->wflag = 0;
danghuutoan 0:f24ba3a89ec1 715 if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */
danghuutoan 0:f24ba3a89ec1 716 for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */
danghuutoan 0:f24ba3a89ec1 717 wsect += fs->fsize;
danghuutoan 0:f24ba3a89ec1 718 disk_write(fs->drv, fs->win, wsect, 1);
danghuutoan 0:f24ba3a89ec1 719 }
danghuutoan 0:f24ba3a89ec1 720 }
danghuutoan 0:f24ba3a89ec1 721 }
danghuutoan 0:f24ba3a89ec1 722 }
danghuutoan 0:f24ba3a89ec1 723 return res;
danghuutoan 0:f24ba3a89ec1 724 }
danghuutoan 0:f24ba3a89ec1 725 #endif
danghuutoan 0:f24ba3a89ec1 726
danghuutoan 0:f24ba3a89ec1 727
danghuutoan 0:f24ba3a89ec1 728 static
danghuutoan 0:f24ba3a89ec1 729 FRESULT move_window ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 730 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 731 DWORD sector /* Sector number to make appearance in the fs->win[] */
danghuutoan 0:f24ba3a89ec1 732 )
danghuutoan 0:f24ba3a89ec1 733 {
danghuutoan 0:f24ba3a89ec1 734 FRESULT res = FR_OK;
danghuutoan 0:f24ba3a89ec1 735
danghuutoan 0:f24ba3a89ec1 736
danghuutoan 0:f24ba3a89ec1 737 if (sector != fs->winsect) { /* Window offset changed? */
danghuutoan 0:f24ba3a89ec1 738 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 739 res = sync_window(fs); /* Write-back changes */
danghuutoan 0:f24ba3a89ec1 740 #endif
danghuutoan 0:f24ba3a89ec1 741 if (res == FR_OK) { /* Fill sector window with new data */
danghuutoan 0:f24ba3a89ec1 742 if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
danghuutoan 0:f24ba3a89ec1 743 sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */
danghuutoan 0:f24ba3a89ec1 744 res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 745 }
danghuutoan 0:f24ba3a89ec1 746 fs->winsect = sector;
danghuutoan 0:f24ba3a89ec1 747 }
danghuutoan 0:f24ba3a89ec1 748 }
danghuutoan 0:f24ba3a89ec1 749 return res;
danghuutoan 0:f24ba3a89ec1 750 }
danghuutoan 0:f24ba3a89ec1 751
danghuutoan 0:f24ba3a89ec1 752
danghuutoan 0:f24ba3a89ec1 753
danghuutoan 0:f24ba3a89ec1 754
danghuutoan 0:f24ba3a89ec1 755 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 756 /* Synchronize file system and strage device */
danghuutoan 0:f24ba3a89ec1 757 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 758 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 759 static
danghuutoan 0:f24ba3a89ec1 760 FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 761 FATFS* fs /* File system object */
danghuutoan 0:f24ba3a89ec1 762 )
danghuutoan 0:f24ba3a89ec1 763 {
danghuutoan 0:f24ba3a89ec1 764 FRESULT res;
danghuutoan 0:f24ba3a89ec1 765
danghuutoan 0:f24ba3a89ec1 766
danghuutoan 0:f24ba3a89ec1 767 res = sync_window(fs);
danghuutoan 0:f24ba3a89ec1 768 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 769 /* Update FSInfo sector if needed */
danghuutoan 0:f24ba3a89ec1 770 if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
danghuutoan 0:f24ba3a89ec1 771 /* Create FSInfo structure */
danghuutoan 0:f24ba3a89ec1 772 mem_set(fs->win, 0, SS(fs));
danghuutoan 0:f24ba3a89ec1 773 ST_WORD(fs->win + BS_55AA, 0xAA55);
danghuutoan 0:f24ba3a89ec1 774 ST_DWORD(fs->win + FSI_LeadSig, 0x41615252);
danghuutoan 0:f24ba3a89ec1 775 ST_DWORD(fs->win + FSI_StrucSig, 0x61417272);
danghuutoan 0:f24ba3a89ec1 776 ST_DWORD(fs->win + FSI_Free_Count, fs->free_clust);
danghuutoan 0:f24ba3a89ec1 777 ST_DWORD(fs->win + FSI_Nxt_Free, fs->last_clust);
danghuutoan 0:f24ba3a89ec1 778 /* Write it into the FSInfo sector */
danghuutoan 0:f24ba3a89ec1 779 fs->winsect = fs->volbase + 1;
danghuutoan 0:f24ba3a89ec1 780 disk_write(fs->drv, fs->win, fs->winsect, 1);
danghuutoan 0:f24ba3a89ec1 781 fs->fsi_flag = 0;
danghuutoan 0:f24ba3a89ec1 782 }
danghuutoan 0:f24ba3a89ec1 783 /* Make sure that no pending write process in the physical drive */
danghuutoan 0:f24ba3a89ec1 784 if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
danghuutoan 0:f24ba3a89ec1 785 res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 786 }
danghuutoan 0:f24ba3a89ec1 787
danghuutoan 0:f24ba3a89ec1 788 return res;
danghuutoan 0:f24ba3a89ec1 789 }
danghuutoan 0:f24ba3a89ec1 790 #endif
danghuutoan 0:f24ba3a89ec1 791
danghuutoan 0:f24ba3a89ec1 792
danghuutoan 0:f24ba3a89ec1 793
danghuutoan 0:f24ba3a89ec1 794
danghuutoan 0:f24ba3a89ec1 795 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 796 /* Get sector# from cluster# */
danghuutoan 0:f24ba3a89ec1 797 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 798 /* Hidden API for hacks and disk tools */
danghuutoan 0:f24ba3a89ec1 799
danghuutoan 0:f24ba3a89ec1 800 DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
danghuutoan 0:f24ba3a89ec1 801 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 802 DWORD clst /* Cluster# to be converted */
danghuutoan 0:f24ba3a89ec1 803 )
danghuutoan 0:f24ba3a89ec1 804 {
danghuutoan 0:f24ba3a89ec1 805 clst -= 2;
danghuutoan 0:f24ba3a89ec1 806 if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */
danghuutoan 0:f24ba3a89ec1 807 return clst * fs->csize + fs->database;
danghuutoan 0:f24ba3a89ec1 808 }
danghuutoan 0:f24ba3a89ec1 809
danghuutoan 0:f24ba3a89ec1 810
danghuutoan 0:f24ba3a89ec1 811
danghuutoan 0:f24ba3a89ec1 812
danghuutoan 0:f24ba3a89ec1 813 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 814 /* FAT access - Read value of a FAT entry */
danghuutoan 0:f24ba3a89ec1 815 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 816 /* Hidden API for hacks and disk tools */
danghuutoan 0:f24ba3a89ec1 817
danghuutoan 0:f24ba3a89ec1 818 DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
danghuutoan 0:f24ba3a89ec1 819 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 820 DWORD clst /* FAT index number (cluster number) to get the value */
danghuutoan 0:f24ba3a89ec1 821 )
danghuutoan 0:f24ba3a89ec1 822 {
danghuutoan 0:f24ba3a89ec1 823 UINT wc, bc;
danghuutoan 0:f24ba3a89ec1 824 BYTE *p;
danghuutoan 0:f24ba3a89ec1 825 DWORD val;
danghuutoan 0:f24ba3a89ec1 826
danghuutoan 0:f24ba3a89ec1 827
danghuutoan 0:f24ba3a89ec1 828 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
danghuutoan 0:f24ba3a89ec1 829 val = 1; /* Internal error */
danghuutoan 0:f24ba3a89ec1 830
danghuutoan 0:f24ba3a89ec1 831 } else {
danghuutoan 0:f24ba3a89ec1 832 val = 0xFFFFFFFF; /* Default value falls on disk error */
danghuutoan 0:f24ba3a89ec1 833
danghuutoan 0:f24ba3a89ec1 834 switch (fs->fs_type) {
danghuutoan 0:f24ba3a89ec1 835 case FS_FAT12 :
danghuutoan 0:f24ba3a89ec1 836 bc = (UINT)clst; bc += bc / 2;
danghuutoan 0:f24ba3a89ec1 837 if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 838 wc = fs->win[bc++ % SS(fs)];
danghuutoan 0:f24ba3a89ec1 839 if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 840 wc |= fs->win[bc % SS(fs)] << 8;
danghuutoan 0:f24ba3a89ec1 841 val = clst & 1 ? wc >> 4 : (wc & 0xFFF);
danghuutoan 0:f24ba3a89ec1 842 break;
danghuutoan 0:f24ba3a89ec1 843
danghuutoan 0:f24ba3a89ec1 844 case FS_FAT16 :
danghuutoan 0:f24ba3a89ec1 845 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 846 p = &fs->win[clst * 2 % SS(fs)];
danghuutoan 0:f24ba3a89ec1 847 val = LD_WORD(p);
danghuutoan 0:f24ba3a89ec1 848 break;
danghuutoan 0:f24ba3a89ec1 849
danghuutoan 0:f24ba3a89ec1 850 case FS_FAT32 :
danghuutoan 0:f24ba3a89ec1 851 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 852 p = &fs->win[clst * 4 % SS(fs)];
danghuutoan 0:f24ba3a89ec1 853 val = LD_DWORD(p) & 0x0FFFFFFF;
danghuutoan 0:f24ba3a89ec1 854 break;
danghuutoan 0:f24ba3a89ec1 855
danghuutoan 0:f24ba3a89ec1 856 default:
danghuutoan 0:f24ba3a89ec1 857 val = 1; /* Internal error */
danghuutoan 0:f24ba3a89ec1 858 }
danghuutoan 0:f24ba3a89ec1 859 }
danghuutoan 0:f24ba3a89ec1 860
danghuutoan 0:f24ba3a89ec1 861 return val;
danghuutoan 0:f24ba3a89ec1 862 }
danghuutoan 0:f24ba3a89ec1 863
danghuutoan 0:f24ba3a89ec1 864
danghuutoan 0:f24ba3a89ec1 865
danghuutoan 0:f24ba3a89ec1 866
danghuutoan 0:f24ba3a89ec1 867 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 868 /* FAT access - Change value of a FAT entry */
danghuutoan 0:f24ba3a89ec1 869 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 870 /* Hidden API for hacks and disk tools */
danghuutoan 0:f24ba3a89ec1 871
danghuutoan 0:f24ba3a89ec1 872 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 873 FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 874 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 875 DWORD clst, /* FAT index number (cluster number) to be changed */
danghuutoan 0:f24ba3a89ec1 876 DWORD val /* New value to be set to the entry */
danghuutoan 0:f24ba3a89ec1 877 )
danghuutoan 0:f24ba3a89ec1 878 {
danghuutoan 0:f24ba3a89ec1 879 UINT bc;
danghuutoan 0:f24ba3a89ec1 880 BYTE *p;
danghuutoan 0:f24ba3a89ec1 881 FRESULT res;
danghuutoan 0:f24ba3a89ec1 882
danghuutoan 0:f24ba3a89ec1 883
danghuutoan 0:f24ba3a89ec1 884 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
danghuutoan 0:f24ba3a89ec1 885 res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 886
danghuutoan 0:f24ba3a89ec1 887 } else {
danghuutoan 0:f24ba3a89ec1 888 switch (fs->fs_type) {
danghuutoan 0:f24ba3a89ec1 889 case FS_FAT12 :
danghuutoan 0:f24ba3a89ec1 890 bc = (UINT)clst; bc += bc / 2;
danghuutoan 0:f24ba3a89ec1 891 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
danghuutoan 0:f24ba3a89ec1 892 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 893 p = &fs->win[bc++ % SS(fs)];
danghuutoan 0:f24ba3a89ec1 894 *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
danghuutoan 0:f24ba3a89ec1 895 fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 896 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
danghuutoan 0:f24ba3a89ec1 897 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 898 p = &fs->win[bc % SS(fs)];
danghuutoan 0:f24ba3a89ec1 899 *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
danghuutoan 0:f24ba3a89ec1 900 fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 901 break;
danghuutoan 0:f24ba3a89ec1 902
danghuutoan 0:f24ba3a89ec1 903 case FS_FAT16 :
danghuutoan 0:f24ba3a89ec1 904 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
danghuutoan 0:f24ba3a89ec1 905 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 906 p = &fs->win[clst * 2 % SS(fs)];
danghuutoan 0:f24ba3a89ec1 907 ST_WORD(p, (WORD)val);
danghuutoan 0:f24ba3a89ec1 908 fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 909 break;
danghuutoan 0:f24ba3a89ec1 910
danghuutoan 0:f24ba3a89ec1 911 case FS_FAT32 :
danghuutoan 0:f24ba3a89ec1 912 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
danghuutoan 0:f24ba3a89ec1 913 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 914 p = &fs->win[clst * 4 % SS(fs)];
danghuutoan 0:f24ba3a89ec1 915 val |= LD_DWORD(p) & 0xF0000000;
danghuutoan 0:f24ba3a89ec1 916 ST_DWORD(p, val);
danghuutoan 0:f24ba3a89ec1 917 fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 918 break;
danghuutoan 0:f24ba3a89ec1 919
danghuutoan 0:f24ba3a89ec1 920 default :
danghuutoan 0:f24ba3a89ec1 921 res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 922 }
danghuutoan 0:f24ba3a89ec1 923 }
danghuutoan 0:f24ba3a89ec1 924
danghuutoan 0:f24ba3a89ec1 925 return res;
danghuutoan 0:f24ba3a89ec1 926 }
danghuutoan 0:f24ba3a89ec1 927 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 928
danghuutoan 0:f24ba3a89ec1 929
danghuutoan 0:f24ba3a89ec1 930
danghuutoan 0:f24ba3a89ec1 931
danghuutoan 0:f24ba3a89ec1 932 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 933 /* FAT handling - Remove a cluster chain */
danghuutoan 0:f24ba3a89ec1 934 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 935 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 936 static
danghuutoan 0:f24ba3a89ec1 937 FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 938 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 939 DWORD clst /* Cluster# to remove a chain from */
danghuutoan 0:f24ba3a89ec1 940 )
danghuutoan 0:f24ba3a89ec1 941 {
danghuutoan 0:f24ba3a89ec1 942 FRESULT res;
danghuutoan 0:f24ba3a89ec1 943 DWORD nxt;
danghuutoan 0:f24ba3a89ec1 944 #if _USE_TRIM
danghuutoan 0:f24ba3a89ec1 945 DWORD scl = clst, ecl = clst, rt[2];
danghuutoan 0:f24ba3a89ec1 946 #endif
danghuutoan 0:f24ba3a89ec1 947
danghuutoan 0:f24ba3a89ec1 948 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
danghuutoan 0:f24ba3a89ec1 949 res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 950
danghuutoan 0:f24ba3a89ec1 951 } else {
danghuutoan 0:f24ba3a89ec1 952 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 953 while (clst < fs->n_fatent) { /* Not a last link? */
danghuutoan 0:f24ba3a89ec1 954 nxt = get_fat(fs, clst); /* Get cluster status */
danghuutoan 0:f24ba3a89ec1 955 if (nxt == 0) break; /* Empty cluster? */
danghuutoan 0:f24ba3a89ec1 956 if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
danghuutoan 0:f24ba3a89ec1 957 if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
danghuutoan 0:f24ba3a89ec1 958 res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
danghuutoan 0:f24ba3a89ec1 959 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 960 if (fs->free_clust != 0xFFFFFFFF) { /* Update FSINFO */
danghuutoan 0:f24ba3a89ec1 961 fs->free_clust++;
danghuutoan 0:f24ba3a89ec1 962 fs->fsi_flag |= 1;
danghuutoan 0:f24ba3a89ec1 963 }
danghuutoan 0:f24ba3a89ec1 964 #if _USE_TRIM
danghuutoan 0:f24ba3a89ec1 965 if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
danghuutoan 0:f24ba3a89ec1 966 ecl = nxt;
danghuutoan 0:f24ba3a89ec1 967 } else { /* End of contiguous clusters */
danghuutoan 0:f24ba3a89ec1 968 rt[0] = clust2sect(fs, scl); /* Start sector */
danghuutoan 0:f24ba3a89ec1 969 rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
danghuutoan 0:f24ba3a89ec1 970 disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Erase the block */
danghuutoan 0:f24ba3a89ec1 971 scl = ecl = nxt;
danghuutoan 0:f24ba3a89ec1 972 }
danghuutoan 0:f24ba3a89ec1 973 #endif
danghuutoan 0:f24ba3a89ec1 974 clst = nxt; /* Next cluster */
danghuutoan 0:f24ba3a89ec1 975 }
danghuutoan 0:f24ba3a89ec1 976 }
danghuutoan 0:f24ba3a89ec1 977
danghuutoan 0:f24ba3a89ec1 978 return res;
danghuutoan 0:f24ba3a89ec1 979 }
danghuutoan 0:f24ba3a89ec1 980 #endif
danghuutoan 0:f24ba3a89ec1 981
danghuutoan 0:f24ba3a89ec1 982
danghuutoan 0:f24ba3a89ec1 983
danghuutoan 0:f24ba3a89ec1 984
danghuutoan 0:f24ba3a89ec1 985 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 986 /* FAT handling - Stretch or Create a cluster chain */
danghuutoan 0:f24ba3a89ec1 987 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 988 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 989 static
danghuutoan 0:f24ba3a89ec1 990 DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
danghuutoan 0:f24ba3a89ec1 991 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 992 DWORD clst /* Cluster# to stretch, 0:Create a new chain */
danghuutoan 0:f24ba3a89ec1 993 )
danghuutoan 0:f24ba3a89ec1 994 {
danghuutoan 0:f24ba3a89ec1 995 DWORD cs, ncl, scl;
danghuutoan 0:f24ba3a89ec1 996 FRESULT res;
danghuutoan 0:f24ba3a89ec1 997
danghuutoan 0:f24ba3a89ec1 998
danghuutoan 0:f24ba3a89ec1 999 if (clst == 0) { /* Create a new chain */
danghuutoan 0:f24ba3a89ec1 1000 scl = fs->last_clust; /* Get suggested start point */
danghuutoan 0:f24ba3a89ec1 1001 if (!scl || scl >= fs->n_fatent) scl = 1;
danghuutoan 0:f24ba3a89ec1 1002 }
danghuutoan 0:f24ba3a89ec1 1003 else { /* Stretch the current chain */
danghuutoan 0:f24ba3a89ec1 1004 cs = get_fat(fs, clst); /* Check the cluster status */
danghuutoan 0:f24ba3a89ec1 1005 if (cs < 2) return 1; /* Invalid value */
danghuutoan 0:f24ba3a89ec1 1006 if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */
danghuutoan 0:f24ba3a89ec1 1007 if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
danghuutoan 0:f24ba3a89ec1 1008 scl = clst;
danghuutoan 0:f24ba3a89ec1 1009 }
danghuutoan 0:f24ba3a89ec1 1010
danghuutoan 0:f24ba3a89ec1 1011 ncl = scl; /* Start cluster */
danghuutoan 0:f24ba3a89ec1 1012 for (;;) {
danghuutoan 0:f24ba3a89ec1 1013 ncl++; /* Next cluster */
danghuutoan 0:f24ba3a89ec1 1014 if (ncl >= fs->n_fatent) { /* Check wrap around */
danghuutoan 0:f24ba3a89ec1 1015 ncl = 2;
danghuutoan 0:f24ba3a89ec1 1016 if (ncl > scl) return 0; /* No free cluster */
danghuutoan 0:f24ba3a89ec1 1017 }
danghuutoan 0:f24ba3a89ec1 1018 cs = get_fat(fs, ncl); /* Get the cluster status */
danghuutoan 0:f24ba3a89ec1 1019 if (cs == 0) break; /* Found a free cluster */
danghuutoan 0:f24ba3a89ec1 1020 if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
danghuutoan 0:f24ba3a89ec1 1021 return cs;
danghuutoan 0:f24ba3a89ec1 1022 if (ncl == scl) return 0; /* No free cluster */
danghuutoan 0:f24ba3a89ec1 1023 }
danghuutoan 0:f24ba3a89ec1 1024
danghuutoan 0:f24ba3a89ec1 1025 res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
danghuutoan 0:f24ba3a89ec1 1026 if (res == FR_OK && clst != 0) {
danghuutoan 0:f24ba3a89ec1 1027 res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
danghuutoan 0:f24ba3a89ec1 1028 }
danghuutoan 0:f24ba3a89ec1 1029 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1030 fs->last_clust = ncl; /* Update FSINFO */
danghuutoan 0:f24ba3a89ec1 1031 if (fs->free_clust != 0xFFFFFFFF) {
danghuutoan 0:f24ba3a89ec1 1032 fs->free_clust--;
danghuutoan 0:f24ba3a89ec1 1033 fs->fsi_flag |= 1;
danghuutoan 0:f24ba3a89ec1 1034 }
danghuutoan 0:f24ba3a89ec1 1035 } else {
danghuutoan 0:f24ba3a89ec1 1036 ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
danghuutoan 0:f24ba3a89ec1 1037 }
danghuutoan 0:f24ba3a89ec1 1038
danghuutoan 0:f24ba3a89ec1 1039 return ncl; /* Return new cluster number or error code */
danghuutoan 0:f24ba3a89ec1 1040 }
danghuutoan 0:f24ba3a89ec1 1041 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 1042
danghuutoan 0:f24ba3a89ec1 1043
danghuutoan 0:f24ba3a89ec1 1044
danghuutoan 0:f24ba3a89ec1 1045
danghuutoan 0:f24ba3a89ec1 1046 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1047 /* FAT handling - Convert offset into cluster with link map table */
danghuutoan 0:f24ba3a89ec1 1048 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1049
danghuutoan 0:f24ba3a89ec1 1050 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 1051 static
danghuutoan 0:f24ba3a89ec1 1052 DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
danghuutoan 0:f24ba3a89ec1 1053 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 1054 DWORD ofs /* File offset to be converted to cluster# */
danghuutoan 0:f24ba3a89ec1 1055 )
danghuutoan 0:f24ba3a89ec1 1056 {
danghuutoan 0:f24ba3a89ec1 1057 DWORD cl, ncl, *tbl;
danghuutoan 0:f24ba3a89ec1 1058
danghuutoan 0:f24ba3a89ec1 1059
danghuutoan 0:f24ba3a89ec1 1060 tbl = fp->cltbl + 1; /* Top of CLMT */
danghuutoan 0:f24ba3a89ec1 1061 cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
danghuutoan 0:f24ba3a89ec1 1062 for (;;) {
danghuutoan 0:f24ba3a89ec1 1063 ncl = *tbl++; /* Number of cluters in the fragment */
danghuutoan 0:f24ba3a89ec1 1064 if (!ncl) return 0; /* End of table? (error) */
danghuutoan 0:f24ba3a89ec1 1065 if (cl < ncl) break; /* In this fragment? */
danghuutoan 0:f24ba3a89ec1 1066 cl -= ncl; tbl++; /* Next fragment */
danghuutoan 0:f24ba3a89ec1 1067 }
danghuutoan 0:f24ba3a89ec1 1068 return cl + *tbl; /* Return the cluster number */
danghuutoan 0:f24ba3a89ec1 1069 }
danghuutoan 0:f24ba3a89ec1 1070 #endif /* _USE_FASTSEEK */
danghuutoan 0:f24ba3a89ec1 1071
danghuutoan 0:f24ba3a89ec1 1072
danghuutoan 0:f24ba3a89ec1 1073
danghuutoan 0:f24ba3a89ec1 1074
danghuutoan 0:f24ba3a89ec1 1075 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1076 /* Directory handling - Set directory index */
danghuutoan 0:f24ba3a89ec1 1077 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1078
danghuutoan 0:f24ba3a89ec1 1079 static
danghuutoan 0:f24ba3a89ec1 1080 FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 1081 DIR* dp, /* Pointer to directory object */
danghuutoan 0:f24ba3a89ec1 1082 UINT idx /* Index of directory table */
danghuutoan 0:f24ba3a89ec1 1083 )
danghuutoan 0:f24ba3a89ec1 1084 {
danghuutoan 0:f24ba3a89ec1 1085 DWORD clst, sect;
danghuutoan 0:f24ba3a89ec1 1086 UINT ic;
danghuutoan 0:f24ba3a89ec1 1087
danghuutoan 0:f24ba3a89ec1 1088
danghuutoan 0:f24ba3a89ec1 1089 dp->index = (WORD)idx; /* Current index */
danghuutoan 0:f24ba3a89ec1 1090 clst = dp->sclust; /* Table start cluster (0:root) */
danghuutoan 0:f24ba3a89ec1 1091 if (clst == 1 || clst >= dp->fs->n_fatent) /* Check start cluster range */
danghuutoan 0:f24ba3a89ec1 1092 return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1093 if (!clst && dp->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
danghuutoan 0:f24ba3a89ec1 1094 clst = dp->fs->dirbase;
danghuutoan 0:f24ba3a89ec1 1095
danghuutoan 0:f24ba3a89ec1 1096 if (clst == 0) { /* Static table (root-directory in FAT12/16) */
danghuutoan 0:f24ba3a89ec1 1097 if (idx >= dp->fs->n_rootdir) /* Is index out of range? */
danghuutoan 0:f24ba3a89ec1 1098 return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1099 sect = dp->fs->dirbase;
danghuutoan 0:f24ba3a89ec1 1100 }
danghuutoan 0:f24ba3a89ec1 1101 else { /* Dynamic table (root-directory in FAT32 or sub-directory) */
danghuutoan 0:f24ba3a89ec1 1102 ic = SS(dp->fs) / SZ_DIRE * dp->fs->csize; /* Entries per cluster */
danghuutoan 0:f24ba3a89ec1 1103 while (idx >= ic) { /* Follow cluster chain */
danghuutoan 0:f24ba3a89ec1 1104 clst = get_fat(dp->fs, clst); /* Get next cluster */
danghuutoan 0:f24ba3a89ec1 1105 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
danghuutoan 0:f24ba3a89ec1 1106 if (clst < 2 || clst >= dp->fs->n_fatent) /* Reached to end of table or internal error */
danghuutoan 0:f24ba3a89ec1 1107 return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1108 idx -= ic;
danghuutoan 0:f24ba3a89ec1 1109 }
danghuutoan 0:f24ba3a89ec1 1110 sect = clust2sect(dp->fs, clst);
danghuutoan 0:f24ba3a89ec1 1111 }
danghuutoan 0:f24ba3a89ec1 1112 dp->clust = clst; /* Current cluster# */
danghuutoan 0:f24ba3a89ec1 1113 if (!sect) return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1114 dp->sect = sect + idx / (SS(dp->fs) / SZ_DIRE); /* Sector# of the directory entry */
danghuutoan 0:f24ba3a89ec1 1115 dp->dir = dp->fs->win + (idx % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Ptr to the entry in the sector */
danghuutoan 0:f24ba3a89ec1 1116
danghuutoan 0:f24ba3a89ec1 1117 return FR_OK;
danghuutoan 0:f24ba3a89ec1 1118 }
danghuutoan 0:f24ba3a89ec1 1119
danghuutoan 0:f24ba3a89ec1 1120
danghuutoan 0:f24ba3a89ec1 1121
danghuutoan 0:f24ba3a89ec1 1122
danghuutoan 0:f24ba3a89ec1 1123 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1124 /* Directory handling - Move directory table index next */
danghuutoan 0:f24ba3a89ec1 1125 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1126
danghuutoan 0:f24ba3a89ec1 1127 static
danghuutoan 0:f24ba3a89ec1 1128 FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
danghuutoan 0:f24ba3a89ec1 1129 DIR* dp, /* Pointer to the directory object */
danghuutoan 0:f24ba3a89ec1 1130 int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
danghuutoan 0:f24ba3a89ec1 1131 )
danghuutoan 0:f24ba3a89ec1 1132 {
danghuutoan 0:f24ba3a89ec1 1133 DWORD clst;
danghuutoan 0:f24ba3a89ec1 1134 UINT i;
danghuutoan 0:f24ba3a89ec1 1135 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1136 UINT c;
danghuutoan 0:f24ba3a89ec1 1137 #endif
danghuutoan 0:f24ba3a89ec1 1138
danghuutoan 0:f24ba3a89ec1 1139
danghuutoan 0:f24ba3a89ec1 1140 i = dp->index + 1;
danghuutoan 0:f24ba3a89ec1 1141 if (!(i & 0xFFFF) || !dp->sect) /* Report EOT when index has reached 65535 */
danghuutoan 0:f24ba3a89ec1 1142 return FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 1143
danghuutoan 0:f24ba3a89ec1 1144 if (!(i % (SS(dp->fs) / SZ_DIRE))) { /* Sector changed? */
danghuutoan 0:f24ba3a89ec1 1145 dp->sect++; /* Next sector */
danghuutoan 0:f24ba3a89ec1 1146
danghuutoan 0:f24ba3a89ec1 1147 if (!dp->clust) { /* Static table */
danghuutoan 0:f24ba3a89ec1 1148 if (i >= dp->fs->n_rootdir) /* Report EOT if it reached end of static table */
danghuutoan 0:f24ba3a89ec1 1149 return FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 1150 }
danghuutoan 0:f24ba3a89ec1 1151 else { /* Dynamic table */
danghuutoan 0:f24ba3a89ec1 1152 if (((i / (SS(dp->fs) / SZ_DIRE)) & (dp->fs->csize - 1)) == 0) { /* Cluster changed? */
danghuutoan 0:f24ba3a89ec1 1153 clst = get_fat(dp->fs, dp->clust); /* Get next cluster */
danghuutoan 0:f24ba3a89ec1 1154 if (clst <= 1) return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1155 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 1156 if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */
danghuutoan 0:f24ba3a89ec1 1157 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1158 if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT */
danghuutoan 0:f24ba3a89ec1 1159 clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */
danghuutoan 0:f24ba3a89ec1 1160 if (clst == 0) return FR_DENIED; /* No free cluster */
danghuutoan 0:f24ba3a89ec1 1161 if (clst == 1) return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1162 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 1163 /* Clean-up stretched table */
danghuutoan 0:f24ba3a89ec1 1164 if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */
danghuutoan 0:f24ba3a89ec1 1165 mem_set(dp->fs->win, 0, SS(dp->fs)); /* Clear window buffer */
danghuutoan 0:f24ba3a89ec1 1166 dp->fs->winsect = clust2sect(dp->fs, clst); /* Cluster start sector */
danghuutoan 0:f24ba3a89ec1 1167 for (c = 0; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */
danghuutoan 0:f24ba3a89ec1 1168 dp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 1169 if (sync_window(dp->fs)) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 1170 dp->fs->winsect++;
danghuutoan 0:f24ba3a89ec1 1171 }
danghuutoan 0:f24ba3a89ec1 1172 dp->fs->winsect -= c; /* Rewind window offset */
danghuutoan 0:f24ba3a89ec1 1173 #else
danghuutoan 0:f24ba3a89ec1 1174 if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT (this is to suppress warning) */
danghuutoan 0:f24ba3a89ec1 1175 return FR_NO_FILE; /* Report EOT */
danghuutoan 0:f24ba3a89ec1 1176 #endif
danghuutoan 0:f24ba3a89ec1 1177 }
danghuutoan 0:f24ba3a89ec1 1178 dp->clust = clst; /* Initialize data for new cluster */
danghuutoan 0:f24ba3a89ec1 1179 dp->sect = clust2sect(dp->fs, clst);
danghuutoan 0:f24ba3a89ec1 1180 }
danghuutoan 0:f24ba3a89ec1 1181 }
danghuutoan 0:f24ba3a89ec1 1182 }
danghuutoan 0:f24ba3a89ec1 1183
danghuutoan 0:f24ba3a89ec1 1184 dp->index = (WORD)i; /* Current index */
danghuutoan 0:f24ba3a89ec1 1185 dp->dir = dp->fs->win + (i % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Current entry in the window */
danghuutoan 0:f24ba3a89ec1 1186
danghuutoan 0:f24ba3a89ec1 1187 return FR_OK;
danghuutoan 0:f24ba3a89ec1 1188 }
danghuutoan 0:f24ba3a89ec1 1189
danghuutoan 0:f24ba3a89ec1 1190
danghuutoan 0:f24ba3a89ec1 1191
danghuutoan 0:f24ba3a89ec1 1192
danghuutoan 0:f24ba3a89ec1 1193 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1194 /* Directory handling - Reserve directory entry */
danghuutoan 0:f24ba3a89ec1 1195 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1196
danghuutoan 0:f24ba3a89ec1 1197 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1198 static
danghuutoan 0:f24ba3a89ec1 1199 FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 1200 DIR* dp, /* Pointer to the directory object */
danghuutoan 0:f24ba3a89ec1 1201 UINT nent /* Number of contiguous entries to allocate (1-21) */
danghuutoan 0:f24ba3a89ec1 1202 )
danghuutoan 0:f24ba3a89ec1 1203 {
danghuutoan 0:f24ba3a89ec1 1204 FRESULT res;
danghuutoan 0:f24ba3a89ec1 1205 UINT n;
danghuutoan 0:f24ba3a89ec1 1206
danghuutoan 0:f24ba3a89ec1 1207
danghuutoan 0:f24ba3a89ec1 1208 res = dir_sdi(dp, 0);
danghuutoan 0:f24ba3a89ec1 1209 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1210 n = 0;
danghuutoan 0:f24ba3a89ec1 1211 do {
danghuutoan 0:f24ba3a89ec1 1212 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1213 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1214 if (dp->dir[0] == DDEM || dp->dir[0] == 0) { /* Is it a free entry? */
danghuutoan 0:f24ba3a89ec1 1215 if (++n == nent) break; /* A block of contiguous free entries is found */
danghuutoan 0:f24ba3a89ec1 1216 } else {
danghuutoan 0:f24ba3a89ec1 1217 n = 0; /* Not a blank entry. Restart to search */
danghuutoan 0:f24ba3a89ec1 1218 }
danghuutoan 0:f24ba3a89ec1 1219 res = dir_next(dp, 1); /* Next entry with table stretch enabled */
danghuutoan 0:f24ba3a89ec1 1220 } while (res == FR_OK);
danghuutoan 0:f24ba3a89ec1 1221 }
danghuutoan 0:f24ba3a89ec1 1222 if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
danghuutoan 0:f24ba3a89ec1 1223 return res;
danghuutoan 0:f24ba3a89ec1 1224 }
danghuutoan 0:f24ba3a89ec1 1225 #endif
danghuutoan 0:f24ba3a89ec1 1226
danghuutoan 0:f24ba3a89ec1 1227
danghuutoan 0:f24ba3a89ec1 1228
danghuutoan 0:f24ba3a89ec1 1229
danghuutoan 0:f24ba3a89ec1 1230 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1231 /* Directory handling - Load/Store start cluster number */
danghuutoan 0:f24ba3a89ec1 1232 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1233
danghuutoan 0:f24ba3a89ec1 1234 static
danghuutoan 0:f24ba3a89ec1 1235 DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
danghuutoan 0:f24ba3a89ec1 1236 FATFS* fs, /* Pointer to the fs object */
danghuutoan 0:f24ba3a89ec1 1237 const BYTE* dir /* Pointer to the SFN entry */
danghuutoan 0:f24ba3a89ec1 1238 )
danghuutoan 0:f24ba3a89ec1 1239 {
danghuutoan 0:f24ba3a89ec1 1240 DWORD cl;
danghuutoan 0:f24ba3a89ec1 1241
danghuutoan 0:f24ba3a89ec1 1242 cl = LD_WORD(dir + DIR_FstClusLO);
danghuutoan 0:f24ba3a89ec1 1243 if (fs->fs_type == FS_FAT32)
danghuutoan 0:f24ba3a89ec1 1244 cl |= (DWORD)LD_WORD(dir + DIR_FstClusHI) << 16;
danghuutoan 0:f24ba3a89ec1 1245
danghuutoan 0:f24ba3a89ec1 1246 return cl;
danghuutoan 0:f24ba3a89ec1 1247 }
danghuutoan 0:f24ba3a89ec1 1248
danghuutoan 0:f24ba3a89ec1 1249
danghuutoan 0:f24ba3a89ec1 1250 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1251 static
danghuutoan 0:f24ba3a89ec1 1252 void st_clust (
danghuutoan 0:f24ba3a89ec1 1253 BYTE* dir, /* Pointer to the SFN entry */
danghuutoan 0:f24ba3a89ec1 1254 DWORD cl /* Value to be set */
danghuutoan 0:f24ba3a89ec1 1255 )
danghuutoan 0:f24ba3a89ec1 1256 {
danghuutoan 0:f24ba3a89ec1 1257 ST_WORD(dir + DIR_FstClusLO, cl);
danghuutoan 0:f24ba3a89ec1 1258 ST_WORD(dir + DIR_FstClusHI, cl >> 16);
danghuutoan 0:f24ba3a89ec1 1259 }
danghuutoan 0:f24ba3a89ec1 1260 #endif
danghuutoan 0:f24ba3a89ec1 1261
danghuutoan 0:f24ba3a89ec1 1262
danghuutoan 0:f24ba3a89ec1 1263
danghuutoan 0:f24ba3a89ec1 1264
danghuutoan 0:f24ba3a89ec1 1265 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1266 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
danghuutoan 0:f24ba3a89ec1 1267 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1268 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1269 static
danghuutoan 0:f24ba3a89ec1 1270 const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
danghuutoan 0:f24ba3a89ec1 1271
danghuutoan 0:f24ba3a89ec1 1272
danghuutoan 0:f24ba3a89ec1 1273 static
danghuutoan 0:f24ba3a89ec1 1274 int cmp_lfn ( /* 1:matched, 0:not matched */
danghuutoan 0:f24ba3a89ec1 1275 WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
danghuutoan 0:f24ba3a89ec1 1276 BYTE* dir /* Pointer to the directory entry containing the part of LFN */
danghuutoan 0:f24ba3a89ec1 1277 )
danghuutoan 0:f24ba3a89ec1 1278 {
danghuutoan 0:f24ba3a89ec1 1279 UINT i, s;
danghuutoan 0:f24ba3a89ec1 1280 WCHAR wc, uc;
danghuutoan 0:f24ba3a89ec1 1281
danghuutoan 0:f24ba3a89ec1 1282
danghuutoan 0:f24ba3a89ec1 1283 if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
danghuutoan 0:f24ba3a89ec1 1284
danghuutoan 0:f24ba3a89ec1 1285 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
danghuutoan 0:f24ba3a89ec1 1286
danghuutoan 0:f24ba3a89ec1 1287 for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
danghuutoan 0:f24ba3a89ec1 1288 uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
danghuutoan 0:f24ba3a89ec1 1289 if (wc) {
danghuutoan 0:f24ba3a89ec1 1290 if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) /* Compare it */
danghuutoan 0:f24ba3a89ec1 1291 return 0; /* Not matched */
danghuutoan 0:f24ba3a89ec1 1292 wc = uc;
danghuutoan 0:f24ba3a89ec1 1293 } else {
danghuutoan 0:f24ba3a89ec1 1294 if (uc != 0xFFFF) return 0; /* Check filler */
danghuutoan 0:f24ba3a89ec1 1295 }
danghuutoan 0:f24ba3a89ec1 1296 }
danghuutoan 0:f24ba3a89ec1 1297
danghuutoan 0:f24ba3a89ec1 1298 if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) /* Last segment matched but different length */
danghuutoan 0:f24ba3a89ec1 1299 return 0;
danghuutoan 0:f24ba3a89ec1 1300
danghuutoan 0:f24ba3a89ec1 1301 return 1; /* The part of LFN matched */
danghuutoan 0:f24ba3a89ec1 1302 }
danghuutoan 0:f24ba3a89ec1 1303
danghuutoan 0:f24ba3a89ec1 1304
danghuutoan 0:f24ba3a89ec1 1305
danghuutoan 0:f24ba3a89ec1 1306 static
danghuutoan 0:f24ba3a89ec1 1307 int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
danghuutoan 0:f24ba3a89ec1 1308 WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
danghuutoan 0:f24ba3a89ec1 1309 BYTE* dir /* Pointer to the LFN entry */
danghuutoan 0:f24ba3a89ec1 1310 )
danghuutoan 0:f24ba3a89ec1 1311 {
danghuutoan 0:f24ba3a89ec1 1312 UINT i, s;
danghuutoan 0:f24ba3a89ec1 1313 WCHAR wc, uc;
danghuutoan 0:f24ba3a89ec1 1314
danghuutoan 0:f24ba3a89ec1 1315
danghuutoan 0:f24ba3a89ec1 1316 if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
danghuutoan 0:f24ba3a89ec1 1317
danghuutoan 0:f24ba3a89ec1 1318 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
danghuutoan 0:f24ba3a89ec1 1319
danghuutoan 0:f24ba3a89ec1 1320 for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
danghuutoan 0:f24ba3a89ec1 1321 uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
danghuutoan 0:f24ba3a89ec1 1322 if (wc) {
danghuutoan 0:f24ba3a89ec1 1323 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
danghuutoan 0:f24ba3a89ec1 1324 lfnbuf[i++] = wc = uc; /* Store it */
danghuutoan 0:f24ba3a89ec1 1325 } else {
danghuutoan 0:f24ba3a89ec1 1326 if (uc != 0xFFFF) return 0; /* Check filler */
danghuutoan 0:f24ba3a89ec1 1327 }
danghuutoan 0:f24ba3a89ec1 1328 }
danghuutoan 0:f24ba3a89ec1 1329
danghuutoan 0:f24ba3a89ec1 1330 if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */
danghuutoan 0:f24ba3a89ec1 1331 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
danghuutoan 0:f24ba3a89ec1 1332 lfnbuf[i] = 0;
danghuutoan 0:f24ba3a89ec1 1333 }
danghuutoan 0:f24ba3a89ec1 1334
danghuutoan 0:f24ba3a89ec1 1335 return 1; /* The part of LFN is valid */
danghuutoan 0:f24ba3a89ec1 1336 }
danghuutoan 0:f24ba3a89ec1 1337
danghuutoan 0:f24ba3a89ec1 1338
danghuutoan 0:f24ba3a89ec1 1339 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1340 static
danghuutoan 0:f24ba3a89ec1 1341 void fit_lfn (
danghuutoan 0:f24ba3a89ec1 1342 const WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
danghuutoan 0:f24ba3a89ec1 1343 BYTE* dir, /* Pointer to the LFN entry to be processed */
danghuutoan 0:f24ba3a89ec1 1344 BYTE ord, /* LFN order (1-20) */
danghuutoan 0:f24ba3a89ec1 1345 BYTE sum /* Checksum of the corresponding SFN */
danghuutoan 0:f24ba3a89ec1 1346 )
danghuutoan 0:f24ba3a89ec1 1347 {
danghuutoan 0:f24ba3a89ec1 1348 UINT i, s;
danghuutoan 0:f24ba3a89ec1 1349 WCHAR wc;
danghuutoan 0:f24ba3a89ec1 1350
danghuutoan 0:f24ba3a89ec1 1351
danghuutoan 0:f24ba3a89ec1 1352 dir[LDIR_Chksum] = sum; /* Set checksum */
danghuutoan 0:f24ba3a89ec1 1353 dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
danghuutoan 0:f24ba3a89ec1 1354 dir[LDIR_Type] = 0;
danghuutoan 0:f24ba3a89ec1 1355 ST_WORD(dir + LDIR_FstClusLO, 0);
danghuutoan 0:f24ba3a89ec1 1356
danghuutoan 0:f24ba3a89ec1 1357 i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
danghuutoan 0:f24ba3a89ec1 1358 s = wc = 0;
danghuutoan 0:f24ba3a89ec1 1359 do {
danghuutoan 0:f24ba3a89ec1 1360 if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective character */
danghuutoan 0:f24ba3a89ec1 1361 ST_WORD(dir+LfnOfs[s], wc); /* Put it */
danghuutoan 0:f24ba3a89ec1 1362 if (!wc) wc = 0xFFFF; /* Padding characters following last character */
danghuutoan 0:f24ba3a89ec1 1363 } while (++s < 13);
danghuutoan 0:f24ba3a89ec1 1364 if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLEF; /* Bottom LFN part is the start of LFN sequence */
danghuutoan 0:f24ba3a89ec1 1365 dir[LDIR_Ord] = ord; /* Set the LFN order */
danghuutoan 0:f24ba3a89ec1 1366 }
danghuutoan 0:f24ba3a89ec1 1367
danghuutoan 0:f24ba3a89ec1 1368 #endif
danghuutoan 0:f24ba3a89ec1 1369 #endif
danghuutoan 0:f24ba3a89ec1 1370
danghuutoan 0:f24ba3a89ec1 1371
danghuutoan 0:f24ba3a89ec1 1372
danghuutoan 0:f24ba3a89ec1 1373
danghuutoan 0:f24ba3a89ec1 1374 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1375 /* Create numbered name */
danghuutoan 0:f24ba3a89ec1 1376 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1377 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1378 static
danghuutoan 0:f24ba3a89ec1 1379 void gen_numname (
danghuutoan 0:f24ba3a89ec1 1380 BYTE* dst, /* Pointer to the buffer to store numbered SFN */
danghuutoan 0:f24ba3a89ec1 1381 const BYTE* src, /* Pointer to SFN */
danghuutoan 0:f24ba3a89ec1 1382 const WCHAR* lfn, /* Pointer to LFN */
danghuutoan 0:f24ba3a89ec1 1383 UINT seq /* Sequence number */
danghuutoan 0:f24ba3a89ec1 1384 )
danghuutoan 0:f24ba3a89ec1 1385 {
danghuutoan 0:f24ba3a89ec1 1386 BYTE ns[8], c;
danghuutoan 0:f24ba3a89ec1 1387 UINT i, j;
danghuutoan 0:f24ba3a89ec1 1388 WCHAR wc;
danghuutoan 0:f24ba3a89ec1 1389 DWORD sr;
danghuutoan 0:f24ba3a89ec1 1390
danghuutoan 0:f24ba3a89ec1 1391
danghuutoan 0:f24ba3a89ec1 1392 mem_cpy(dst, src, 11);
danghuutoan 0:f24ba3a89ec1 1393
danghuutoan 0:f24ba3a89ec1 1394 if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
danghuutoan 0:f24ba3a89ec1 1395 sr = seq;
danghuutoan 0:f24ba3a89ec1 1396 while (*lfn) { /* Create a CRC */
danghuutoan 0:f24ba3a89ec1 1397 wc = *lfn++;
danghuutoan 0:f24ba3a89ec1 1398 for (i = 0; i < 16; i++) {
danghuutoan 0:f24ba3a89ec1 1399 sr = (sr << 1) + (wc & 1);
danghuutoan 0:f24ba3a89ec1 1400 wc >>= 1;
danghuutoan 0:f24ba3a89ec1 1401 if (sr & 0x10000) sr ^= 0x11021;
danghuutoan 0:f24ba3a89ec1 1402 }
danghuutoan 0:f24ba3a89ec1 1403 }
danghuutoan 0:f24ba3a89ec1 1404 seq = (UINT)sr;
danghuutoan 0:f24ba3a89ec1 1405 }
danghuutoan 0:f24ba3a89ec1 1406
danghuutoan 0:f24ba3a89ec1 1407 /* itoa (hexdecimal) */
danghuutoan 0:f24ba3a89ec1 1408 i = 7;
danghuutoan 0:f24ba3a89ec1 1409 do {
danghuutoan 0:f24ba3a89ec1 1410 c = (seq % 16) + '0';
danghuutoan 0:f24ba3a89ec1 1411 if (c > '9') c += 7;
danghuutoan 0:f24ba3a89ec1 1412 ns[i--] = c;
danghuutoan 0:f24ba3a89ec1 1413 seq /= 16;
danghuutoan 0:f24ba3a89ec1 1414 } while (seq);
danghuutoan 0:f24ba3a89ec1 1415 ns[i] = '~';
danghuutoan 0:f24ba3a89ec1 1416
danghuutoan 0:f24ba3a89ec1 1417 /* Append the number */
danghuutoan 0:f24ba3a89ec1 1418 for (j = 0; j < i && dst[j] != ' '; j++) {
danghuutoan 0:f24ba3a89ec1 1419 if (IsDBCS1(dst[j])) {
danghuutoan 0:f24ba3a89ec1 1420 if (j == i - 1) break;
danghuutoan 0:f24ba3a89ec1 1421 j++;
danghuutoan 0:f24ba3a89ec1 1422 }
danghuutoan 0:f24ba3a89ec1 1423 }
danghuutoan 0:f24ba3a89ec1 1424 do {
danghuutoan 0:f24ba3a89ec1 1425 dst[j++] = (i < 8) ? ns[i++] : ' ';
danghuutoan 0:f24ba3a89ec1 1426 } while (j < 8);
danghuutoan 0:f24ba3a89ec1 1427 }
danghuutoan 0:f24ba3a89ec1 1428 #endif
danghuutoan 0:f24ba3a89ec1 1429
danghuutoan 0:f24ba3a89ec1 1430
danghuutoan 0:f24ba3a89ec1 1431
danghuutoan 0:f24ba3a89ec1 1432
danghuutoan 0:f24ba3a89ec1 1433 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1434 /* Calculate checksum of an SFN entry */
danghuutoan 0:f24ba3a89ec1 1435 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1436 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1437 static
danghuutoan 0:f24ba3a89ec1 1438 BYTE sum_sfn (
danghuutoan 0:f24ba3a89ec1 1439 const BYTE* dir /* Pointer to the SFN entry */
danghuutoan 0:f24ba3a89ec1 1440 )
danghuutoan 0:f24ba3a89ec1 1441 {
danghuutoan 0:f24ba3a89ec1 1442 BYTE sum = 0;
danghuutoan 0:f24ba3a89ec1 1443 UINT n = 11;
danghuutoan 0:f24ba3a89ec1 1444
danghuutoan 0:f24ba3a89ec1 1445 do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
danghuutoan 0:f24ba3a89ec1 1446 return sum;
danghuutoan 0:f24ba3a89ec1 1447 }
danghuutoan 0:f24ba3a89ec1 1448 #endif
danghuutoan 0:f24ba3a89ec1 1449
danghuutoan 0:f24ba3a89ec1 1450
danghuutoan 0:f24ba3a89ec1 1451
danghuutoan 0:f24ba3a89ec1 1452
danghuutoan 0:f24ba3a89ec1 1453 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1454 /* Directory handling - Find an object in the directory */
danghuutoan 0:f24ba3a89ec1 1455 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1456
danghuutoan 0:f24ba3a89ec1 1457 static
danghuutoan 0:f24ba3a89ec1 1458 FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
danghuutoan 0:f24ba3a89ec1 1459 DIR* dp /* Pointer to the directory object linked to the file name */
danghuutoan 0:f24ba3a89ec1 1460 )
danghuutoan 0:f24ba3a89ec1 1461 {
danghuutoan 0:f24ba3a89ec1 1462 FRESULT res;
danghuutoan 0:f24ba3a89ec1 1463 BYTE c, *dir;
danghuutoan 0:f24ba3a89ec1 1464 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1465 BYTE a, ord, sum;
danghuutoan 0:f24ba3a89ec1 1466 #endif
danghuutoan 0:f24ba3a89ec1 1467
danghuutoan 0:f24ba3a89ec1 1468 res = dir_sdi(dp, 0); /* Rewind directory object */
danghuutoan 0:f24ba3a89ec1 1469 if (res != FR_OK) return res;
danghuutoan 0:f24ba3a89ec1 1470
danghuutoan 0:f24ba3a89ec1 1471 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1472 ord = sum = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
danghuutoan 0:f24ba3a89ec1 1473 #endif
danghuutoan 0:f24ba3a89ec1 1474 do {
danghuutoan 0:f24ba3a89ec1 1475 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1476 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1477 dir = dp->dir; /* Ptr to the directory entry of current index */
danghuutoan 0:f24ba3a89ec1 1478 c = dir[DIR_Name];
danghuutoan 0:f24ba3a89ec1 1479 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
danghuutoan 0:f24ba3a89ec1 1480 #if _USE_LFN /* LFN configuration */
danghuutoan 0:f24ba3a89ec1 1481 a = dir[DIR_Attr] & AM_MASK;
danghuutoan 0:f24ba3a89ec1 1482 if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
danghuutoan 0:f24ba3a89ec1 1483 ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
danghuutoan 0:f24ba3a89ec1 1484 } else {
danghuutoan 0:f24ba3a89ec1 1485 if (a == AM_LFN) { /* An LFN entry is found */
danghuutoan 0:f24ba3a89ec1 1486 if (dp->lfn) {
danghuutoan 0:f24ba3a89ec1 1487 if (c & LLEF) { /* Is it start of LFN sequence? */
danghuutoan 0:f24ba3a89ec1 1488 sum = dir[LDIR_Chksum];
danghuutoan 0:f24ba3a89ec1 1489 c &= ~LLEF; ord = c; /* LFN start order */
danghuutoan 0:f24ba3a89ec1 1490 dp->lfn_idx = dp->index; /* Start index of LFN */
danghuutoan 0:f24ba3a89ec1 1491 }
danghuutoan 0:f24ba3a89ec1 1492 /* Check validity of the LFN entry and compare it with given name */
danghuutoan 0:f24ba3a89ec1 1493 ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
danghuutoan 0:f24ba3a89ec1 1494 }
danghuutoan 0:f24ba3a89ec1 1495 } else { /* An SFN entry is found */
danghuutoan 0:f24ba3a89ec1 1496 if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
danghuutoan 0:f24ba3a89ec1 1497 if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break; /* SFN matched? */
danghuutoan 0:f24ba3a89ec1 1498 ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
danghuutoan 0:f24ba3a89ec1 1499 }
danghuutoan 0:f24ba3a89ec1 1500 }
danghuutoan 0:f24ba3a89ec1 1501 #else /* Non LFN configuration */
danghuutoan 0:f24ba3a89ec1 1502 if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */
danghuutoan 0:f24ba3a89ec1 1503 break;
danghuutoan 0:f24ba3a89ec1 1504 #endif
danghuutoan 0:f24ba3a89ec1 1505 res = dir_next(dp, 0); /* Next entry */
danghuutoan 0:f24ba3a89ec1 1506 } while (res == FR_OK);
danghuutoan 0:f24ba3a89ec1 1507
danghuutoan 0:f24ba3a89ec1 1508 return res;
danghuutoan 0:f24ba3a89ec1 1509 }
danghuutoan 0:f24ba3a89ec1 1510
danghuutoan 0:f24ba3a89ec1 1511
danghuutoan 0:f24ba3a89ec1 1512
danghuutoan 0:f24ba3a89ec1 1513
danghuutoan 0:f24ba3a89ec1 1514 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1515 /* Read an object from the directory */
danghuutoan 0:f24ba3a89ec1 1516 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1517 #if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2
danghuutoan 0:f24ba3a89ec1 1518 static
danghuutoan 0:f24ba3a89ec1 1519 FRESULT dir_read (
danghuutoan 0:f24ba3a89ec1 1520 DIR* dp, /* Pointer to the directory object */
danghuutoan 0:f24ba3a89ec1 1521 int vol /* Filtered by 0:file/directory or 1:volume label */
danghuutoan 0:f24ba3a89ec1 1522 )
danghuutoan 0:f24ba3a89ec1 1523 {
danghuutoan 0:f24ba3a89ec1 1524 FRESULT res;
danghuutoan 0:f24ba3a89ec1 1525 BYTE a, c, *dir;
danghuutoan 0:f24ba3a89ec1 1526 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1527 BYTE ord = 0xFF, sum = 0xFF;
danghuutoan 0:f24ba3a89ec1 1528 #endif
danghuutoan 0:f24ba3a89ec1 1529
danghuutoan 0:f24ba3a89ec1 1530 res = FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 1531 while (dp->sect) {
danghuutoan 0:f24ba3a89ec1 1532 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1533 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1534 dir = dp->dir; /* Ptr to the directory entry of current index */
danghuutoan 0:f24ba3a89ec1 1535 c = dir[DIR_Name];
danghuutoan 0:f24ba3a89ec1 1536 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
danghuutoan 0:f24ba3a89ec1 1537 a = dir[DIR_Attr] & AM_MASK;
danghuutoan 0:f24ba3a89ec1 1538 #if _USE_LFN /* LFN configuration */
danghuutoan 0:f24ba3a89ec1 1539 if (c == DDEM || (!_FS_RPATH && c == '.') || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
danghuutoan 0:f24ba3a89ec1 1540 ord = 0xFF;
danghuutoan 0:f24ba3a89ec1 1541 } else {
danghuutoan 0:f24ba3a89ec1 1542 if (a == AM_LFN) { /* An LFN entry is found */
danghuutoan 0:f24ba3a89ec1 1543 if (c & LLEF) { /* Is it start of LFN sequence? */
danghuutoan 0:f24ba3a89ec1 1544 sum = dir[LDIR_Chksum];
danghuutoan 0:f24ba3a89ec1 1545 c &= ~LLEF; ord = c;
danghuutoan 0:f24ba3a89ec1 1546 dp->lfn_idx = dp->index;
danghuutoan 0:f24ba3a89ec1 1547 }
danghuutoan 0:f24ba3a89ec1 1548 /* Check LFN validity and capture it */
danghuutoan 0:f24ba3a89ec1 1549 ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
danghuutoan 0:f24ba3a89ec1 1550 } else { /* An SFN entry is found */
danghuutoan 0:f24ba3a89ec1 1551 if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
danghuutoan 0:f24ba3a89ec1 1552 dp->lfn_idx = 0xFFFF; /* It has no LFN. */
danghuutoan 0:f24ba3a89ec1 1553 break;
danghuutoan 0:f24ba3a89ec1 1554 }
danghuutoan 0:f24ba3a89ec1 1555 }
danghuutoan 0:f24ba3a89ec1 1556 #else /* Non LFN configuration */
danghuutoan 0:f24ba3a89ec1 1557 if (c != DDEM && (_FS_RPATH || c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) /* Is it a valid entry? */
danghuutoan 0:f24ba3a89ec1 1558 break;
danghuutoan 0:f24ba3a89ec1 1559 #endif
danghuutoan 0:f24ba3a89ec1 1560 res = dir_next(dp, 0); /* Next entry */
danghuutoan 0:f24ba3a89ec1 1561 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1562 }
danghuutoan 0:f24ba3a89ec1 1563
danghuutoan 0:f24ba3a89ec1 1564 if (res != FR_OK) dp->sect = 0;
danghuutoan 0:f24ba3a89ec1 1565
danghuutoan 0:f24ba3a89ec1 1566 return res;
danghuutoan 0:f24ba3a89ec1 1567 }
danghuutoan 0:f24ba3a89ec1 1568 #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
danghuutoan 0:f24ba3a89ec1 1569
danghuutoan 0:f24ba3a89ec1 1570
danghuutoan 0:f24ba3a89ec1 1571
danghuutoan 0:f24ba3a89ec1 1572
danghuutoan 0:f24ba3a89ec1 1573 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1574 /* Register an object to the directory */
danghuutoan 0:f24ba3a89ec1 1575 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1576 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 1577 static
danghuutoan 0:f24ba3a89ec1 1578 FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
danghuutoan 0:f24ba3a89ec1 1579 DIR* dp /* Target directory with object name to be created */
danghuutoan 0:f24ba3a89ec1 1580 )
danghuutoan 0:f24ba3a89ec1 1581 {
danghuutoan 0:f24ba3a89ec1 1582 FRESULT res;
danghuutoan 0:f24ba3a89ec1 1583 #if _USE_LFN /* LFN configuration */
danghuutoan 0:f24ba3a89ec1 1584 UINT n, nent;
danghuutoan 0:f24ba3a89ec1 1585 BYTE sn[12], *fn, sum;
danghuutoan 0:f24ba3a89ec1 1586 WCHAR *lfn;
danghuutoan 0:f24ba3a89ec1 1587
danghuutoan 0:f24ba3a89ec1 1588
danghuutoan 0:f24ba3a89ec1 1589 fn = dp->fn; lfn = dp->lfn;
danghuutoan 0:f24ba3a89ec1 1590 mem_cpy(sn, fn, 12);
danghuutoan 0:f24ba3a89ec1 1591
danghuutoan 0:f24ba3a89ec1 1592 if (_FS_RPATH && (sn[NSFLAG] & NS_DOT)) /* Cannot create dot entry */
danghuutoan 0:f24ba3a89ec1 1593 return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 1594
danghuutoan 0:f24ba3a89ec1 1595 if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
danghuutoan 0:f24ba3a89ec1 1596 fn[NSFLAG] = 0; dp->lfn = 0; /* Find only SFN */
danghuutoan 0:f24ba3a89ec1 1597 for (n = 1; n < 100; n++) {
danghuutoan 0:f24ba3a89ec1 1598 gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
danghuutoan 0:f24ba3a89ec1 1599 res = dir_find(dp); /* Check if the name collides with existing SFN */
danghuutoan 0:f24ba3a89ec1 1600 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1601 }
danghuutoan 0:f24ba3a89ec1 1602 if (n == 100) return FR_DENIED; /* Abort if too many collisions */
danghuutoan 0:f24ba3a89ec1 1603 if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
danghuutoan 0:f24ba3a89ec1 1604 fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;
danghuutoan 0:f24ba3a89ec1 1605 }
danghuutoan 0:f24ba3a89ec1 1606
danghuutoan 0:f24ba3a89ec1 1607 if (sn[NSFLAG] & NS_LFN) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */
danghuutoan 0:f24ba3a89ec1 1608 for (n = 0; lfn[n]; n++) ;
danghuutoan 0:f24ba3a89ec1 1609 nent = (n + 25) / 13;
danghuutoan 0:f24ba3a89ec1 1610 } else { /* Otherwise allocate an entry for an SFN */
danghuutoan 0:f24ba3a89ec1 1611 nent = 1;
danghuutoan 0:f24ba3a89ec1 1612 }
danghuutoan 0:f24ba3a89ec1 1613 res = dir_alloc(dp, nent); /* Allocate entries */
danghuutoan 0:f24ba3a89ec1 1614
danghuutoan 0:f24ba3a89ec1 1615 if (res == FR_OK && --nent) { /* Set LFN entry if needed */
danghuutoan 0:f24ba3a89ec1 1616 res = dir_sdi(dp, dp->index - nent);
danghuutoan 0:f24ba3a89ec1 1617 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1618 sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
danghuutoan 0:f24ba3a89ec1 1619 do { /* Store LFN entries in bottom first */
danghuutoan 0:f24ba3a89ec1 1620 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1621 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1622 fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);
danghuutoan 0:f24ba3a89ec1 1623 dp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 1624 res = dir_next(dp, 0); /* Next entry */
danghuutoan 0:f24ba3a89ec1 1625 } while (res == FR_OK && --nent);
danghuutoan 0:f24ba3a89ec1 1626 }
danghuutoan 0:f24ba3a89ec1 1627 }
danghuutoan 0:f24ba3a89ec1 1628 #else /* Non LFN configuration */
danghuutoan 0:f24ba3a89ec1 1629 res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
danghuutoan 0:f24ba3a89ec1 1630 #endif
danghuutoan 0:f24ba3a89ec1 1631
danghuutoan 0:f24ba3a89ec1 1632 if (res == FR_OK) { /* Set SFN entry */
danghuutoan 0:f24ba3a89ec1 1633 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1634 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1635 mem_set(dp->dir, 0, SZ_DIRE); /* Clean the entry */
danghuutoan 0:f24ba3a89ec1 1636 mem_cpy(dp->dir, dp->fn, 11); /* Put SFN */
danghuutoan 0:f24ba3a89ec1 1637 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1638 dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
danghuutoan 0:f24ba3a89ec1 1639 #endif
danghuutoan 0:f24ba3a89ec1 1640 dp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 1641 }
danghuutoan 0:f24ba3a89ec1 1642 }
danghuutoan 0:f24ba3a89ec1 1643
danghuutoan 0:f24ba3a89ec1 1644 return res;
danghuutoan 0:f24ba3a89ec1 1645 }
danghuutoan 0:f24ba3a89ec1 1646 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 1647
danghuutoan 0:f24ba3a89ec1 1648
danghuutoan 0:f24ba3a89ec1 1649
danghuutoan 0:f24ba3a89ec1 1650
danghuutoan 0:f24ba3a89ec1 1651 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1652 /* Remove an object from the directory */
danghuutoan 0:f24ba3a89ec1 1653 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1654 #if !_FS_READONLY && !_FS_MINIMIZE
danghuutoan 0:f24ba3a89ec1 1655 static
danghuutoan 0:f24ba3a89ec1 1656 FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
danghuutoan 0:f24ba3a89ec1 1657 DIR* dp /* Directory object pointing the entry to be removed */
danghuutoan 0:f24ba3a89ec1 1658 )
danghuutoan 0:f24ba3a89ec1 1659 {
danghuutoan 0:f24ba3a89ec1 1660 FRESULT res;
danghuutoan 0:f24ba3a89ec1 1661 #if _USE_LFN /* LFN configuration */
danghuutoan 0:f24ba3a89ec1 1662 UINT i;
danghuutoan 0:f24ba3a89ec1 1663
danghuutoan 0:f24ba3a89ec1 1664 i = dp->index; /* SFN index */
danghuutoan 0:f24ba3a89ec1 1665 res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx); /* Goto the SFN or top of the LFN entries */
danghuutoan 0:f24ba3a89ec1 1666 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1667 do {
danghuutoan 0:f24ba3a89ec1 1668 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1669 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 1670 mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
danghuutoan 0:f24ba3a89ec1 1671 *dp->dir = DDEM;
danghuutoan 0:f24ba3a89ec1 1672 dp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 1673 if (dp->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
danghuutoan 0:f24ba3a89ec1 1674 res = dir_next(dp, 0); /* Next entry */
danghuutoan 0:f24ba3a89ec1 1675 } while (res == FR_OK);
danghuutoan 0:f24ba3a89ec1 1676 if (res == FR_NO_FILE) res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 1677 }
danghuutoan 0:f24ba3a89ec1 1678
danghuutoan 0:f24ba3a89ec1 1679 #else /* Non LFN configuration */
danghuutoan 0:f24ba3a89ec1 1680 res = dir_sdi(dp, dp->index);
danghuutoan 0:f24ba3a89ec1 1681 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1682 res = move_window(dp->fs, dp->sect);
danghuutoan 0:f24ba3a89ec1 1683 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 1684 mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
danghuutoan 0:f24ba3a89ec1 1685 *dp->dir = DDEM;
danghuutoan 0:f24ba3a89ec1 1686 dp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 1687 }
danghuutoan 0:f24ba3a89ec1 1688 }
danghuutoan 0:f24ba3a89ec1 1689 #endif
danghuutoan 0:f24ba3a89ec1 1690
danghuutoan 0:f24ba3a89ec1 1691 return res;
danghuutoan 0:f24ba3a89ec1 1692 }
danghuutoan 0:f24ba3a89ec1 1693 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 1694
danghuutoan 0:f24ba3a89ec1 1695
danghuutoan 0:f24ba3a89ec1 1696
danghuutoan 0:f24ba3a89ec1 1697
danghuutoan 0:f24ba3a89ec1 1698 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1699 /* Get file information from directory entry */
danghuutoan 0:f24ba3a89ec1 1700 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1701 #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
danghuutoan 0:f24ba3a89ec1 1702 static
danghuutoan 0:f24ba3a89ec1 1703 void get_fileinfo ( /* No return code */
danghuutoan 0:f24ba3a89ec1 1704 DIR* dp, /* Pointer to the directory object */
danghuutoan 0:f24ba3a89ec1 1705 FILINFO* fno /* Pointer to the file information to be filled */
danghuutoan 0:f24ba3a89ec1 1706 )
danghuutoan 0:f24ba3a89ec1 1707 {
danghuutoan 0:f24ba3a89ec1 1708 UINT i;
danghuutoan 0:f24ba3a89ec1 1709 TCHAR *p, c;
danghuutoan 0:f24ba3a89ec1 1710 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 1711 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1712 WCHAR w, *lfn;
danghuutoan 0:f24ba3a89ec1 1713 #endif
danghuutoan 0:f24ba3a89ec1 1714
danghuutoan 0:f24ba3a89ec1 1715 p = fno->fname;
danghuutoan 0:f24ba3a89ec1 1716 if (dp->sect) { /* Get SFN */
danghuutoan 0:f24ba3a89ec1 1717 dir = dp->dir;
danghuutoan 0:f24ba3a89ec1 1718 i = 0;
danghuutoan 0:f24ba3a89ec1 1719 while (i < 11) { /* Copy name body and extension */
danghuutoan 0:f24ba3a89ec1 1720 c = (TCHAR)dir[i++];
danghuutoan 0:f24ba3a89ec1 1721 if (c == ' ') continue; /* Skip padding spaces */
danghuutoan 0:f24ba3a89ec1 1722 if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
danghuutoan 0:f24ba3a89ec1 1723 if (i == 9) *p++ = '.'; /* Insert a . if extension is exist */
danghuutoan 0:f24ba3a89ec1 1724 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1725 if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
danghuutoan 0:f24ba3a89ec1 1726 c += 0x20; /* To lower */
danghuutoan 0:f24ba3a89ec1 1727 #if _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 1728 if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))
danghuutoan 0:f24ba3a89ec1 1729 c = c << 8 | dir[i++];
danghuutoan 0:f24ba3a89ec1 1730 c = ff_convert(c, 1); /* OEM -> Unicode */
danghuutoan 0:f24ba3a89ec1 1731 if (!c) c = '?';
danghuutoan 0:f24ba3a89ec1 1732 #endif
danghuutoan 0:f24ba3a89ec1 1733 #endif
danghuutoan 0:f24ba3a89ec1 1734 *p++ = c;
danghuutoan 0:f24ba3a89ec1 1735 }
danghuutoan 0:f24ba3a89ec1 1736 fno->fattrib = dir[DIR_Attr]; /* Attribute */
danghuutoan 0:f24ba3a89ec1 1737 fno->fsize = LD_DWORD(dir + DIR_FileSize); /* Size */
danghuutoan 0:f24ba3a89ec1 1738 fno->fdate = LD_WORD(dir + DIR_WrtDate); /* Date */
danghuutoan 0:f24ba3a89ec1 1739 fno->ftime = LD_WORD(dir + DIR_WrtTime); /* Time */
danghuutoan 0:f24ba3a89ec1 1740 }
danghuutoan 0:f24ba3a89ec1 1741 *p = 0; /* Terminate SFN string by a \0 */
danghuutoan 0:f24ba3a89ec1 1742
danghuutoan 0:f24ba3a89ec1 1743 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 1744 if (fno->lfname) {
danghuutoan 0:f24ba3a89ec1 1745 i = 0; p = fno->lfname;
danghuutoan 0:f24ba3a89ec1 1746 if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) { /* Get LFN if available */
danghuutoan 0:f24ba3a89ec1 1747 lfn = dp->lfn;
danghuutoan 0:f24ba3a89ec1 1748 while ((w = *lfn++) != 0) { /* Get an LFN character */
danghuutoan 0:f24ba3a89ec1 1749 #if !_LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 1750 w = ff_convert(w, 0); /* Unicode -> OEM */
danghuutoan 0:f24ba3a89ec1 1751 if (!w) { i = 0; break; } /* No LFN if it could not be converted */
danghuutoan 0:f24ba3a89ec1 1752 if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
danghuutoan 0:f24ba3a89ec1 1753 p[i++] = (TCHAR)(w >> 8);
danghuutoan 0:f24ba3a89ec1 1754 #endif
danghuutoan 0:f24ba3a89ec1 1755 if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */
danghuutoan 0:f24ba3a89ec1 1756 p[i++] = (TCHAR)w;
danghuutoan 0:f24ba3a89ec1 1757 }
danghuutoan 0:f24ba3a89ec1 1758 }
danghuutoan 0:f24ba3a89ec1 1759 p[i] = 0; /* Terminate LFN string by a \0 */
danghuutoan 0:f24ba3a89ec1 1760 }
danghuutoan 0:f24ba3a89ec1 1761 #endif
danghuutoan 0:f24ba3a89ec1 1762 }
danghuutoan 0:f24ba3a89ec1 1763 #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
danghuutoan 0:f24ba3a89ec1 1764
danghuutoan 0:f24ba3a89ec1 1765
danghuutoan 0:f24ba3a89ec1 1766
danghuutoan 0:f24ba3a89ec1 1767
danghuutoan 0:f24ba3a89ec1 1768 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1769 /* Pattern matching */
danghuutoan 0:f24ba3a89ec1 1770 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1771 #if _USE_FIND && _FS_MINIMIZE <= 1
danghuutoan 0:f24ba3a89ec1 1772 static
danghuutoan 0:f24ba3a89ec1 1773 WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */
danghuutoan 0:f24ba3a89ec1 1774 const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */
danghuutoan 0:f24ba3a89ec1 1775 )
danghuutoan 0:f24ba3a89ec1 1776 {
danghuutoan 0:f24ba3a89ec1 1777 WCHAR chr;
danghuutoan 0:f24ba3a89ec1 1778
danghuutoan 0:f24ba3a89ec1 1779 #if !_LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 1780 chr = (BYTE)*(*ptr)++; /* Get a byte */
danghuutoan 0:f24ba3a89ec1 1781 if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
danghuutoan 0:f24ba3a89ec1 1782 if (IsDBCS1(chr) && IsDBCS2(**ptr)) /* Get DBC 2nd byte if needed */
danghuutoan 0:f24ba3a89ec1 1783 chr = chr << 8 | (BYTE)*(*ptr)++;
danghuutoan 0:f24ba3a89ec1 1784 #ifdef _EXCVT
danghuutoan 0:f24ba3a89ec1 1785 if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
danghuutoan 0:f24ba3a89ec1 1786 #endif
danghuutoan 0:f24ba3a89ec1 1787 #else
danghuutoan 0:f24ba3a89ec1 1788 chr = ff_wtoupper(*(*ptr)++); /* Get a word and to upper */
danghuutoan 0:f24ba3a89ec1 1789 #endif
danghuutoan 0:f24ba3a89ec1 1790 return chr;
danghuutoan 0:f24ba3a89ec1 1791 }
danghuutoan 0:f24ba3a89ec1 1792
danghuutoan 0:f24ba3a89ec1 1793
danghuutoan 0:f24ba3a89ec1 1794 static
danghuutoan 0:f24ba3a89ec1 1795 int pattern_matching ( /* 0:mismatched, 1:matched */
danghuutoan 0:f24ba3a89ec1 1796 const TCHAR* pat, /* Matching pattern */
danghuutoan 0:f24ba3a89ec1 1797 const TCHAR* nam, /* String to be tested */
danghuutoan 0:f24ba3a89ec1 1798 int skip, /* Number of pre-skip chars (number of ?s) */
danghuutoan 0:f24ba3a89ec1 1799 int inf /* Infinite search (* specified) */
danghuutoan 0:f24ba3a89ec1 1800 )
danghuutoan 0:f24ba3a89ec1 1801 {
danghuutoan 0:f24ba3a89ec1 1802 const TCHAR *pp, *np;
danghuutoan 0:f24ba3a89ec1 1803 WCHAR pc, nc;
danghuutoan 0:f24ba3a89ec1 1804 int nm, nx;
danghuutoan 0:f24ba3a89ec1 1805
danghuutoan 0:f24ba3a89ec1 1806
danghuutoan 0:f24ba3a89ec1 1807 while (skip--) { /* Pre-skip name chars */
danghuutoan 0:f24ba3a89ec1 1808 if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
danghuutoan 0:f24ba3a89ec1 1809 }
danghuutoan 0:f24ba3a89ec1 1810 if (!*pat && inf) return 1; /* (short circuit) */
danghuutoan 0:f24ba3a89ec1 1811
danghuutoan 0:f24ba3a89ec1 1812 do {
danghuutoan 0:f24ba3a89ec1 1813 pp = pat; np = nam; /* Top of pattern and name to match */
danghuutoan 0:f24ba3a89ec1 1814 for (;;) {
danghuutoan 0:f24ba3a89ec1 1815 if (*pp == '?' || *pp == '*') { /* Wildcard? */
danghuutoan 0:f24ba3a89ec1 1816 nm = nx = 0;
danghuutoan 0:f24ba3a89ec1 1817 do { /* Analyze the wildcard chars */
danghuutoan 0:f24ba3a89ec1 1818 if (*pp++ == '?') nm++; else nx = 1;
danghuutoan 0:f24ba3a89ec1 1819 } while (*pp == '?' || *pp == '*');
danghuutoan 0:f24ba3a89ec1 1820 if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
danghuutoan 0:f24ba3a89ec1 1821 nc = *np; break; /* Branch mismatched */
danghuutoan 0:f24ba3a89ec1 1822 }
danghuutoan 0:f24ba3a89ec1 1823 pc = get_achar(&pp); /* Get a pattern char */
danghuutoan 0:f24ba3a89ec1 1824 nc = get_achar(&np); /* Get a name char */
danghuutoan 0:f24ba3a89ec1 1825 if (pc != nc) break; /* Branch mismatched? */
danghuutoan 0:f24ba3a89ec1 1826 if (!pc) return 1; /* Branch matched? (matched at end of both strings) */
danghuutoan 0:f24ba3a89ec1 1827 }
danghuutoan 0:f24ba3a89ec1 1828 get_achar(&nam); /* nam++ */
danghuutoan 0:f24ba3a89ec1 1829 } while (inf && nc); /* Retry until end of name if infinite search is specified */
danghuutoan 0:f24ba3a89ec1 1830
danghuutoan 0:f24ba3a89ec1 1831 return 0;
danghuutoan 0:f24ba3a89ec1 1832 }
danghuutoan 0:f24ba3a89ec1 1833 #endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
danghuutoan 0:f24ba3a89ec1 1834
danghuutoan 0:f24ba3a89ec1 1835
danghuutoan 0:f24ba3a89ec1 1836
danghuutoan 0:f24ba3a89ec1 1837
danghuutoan 0:f24ba3a89ec1 1838 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1839 /* Pick a top segment and create the object name in directory form */
danghuutoan 0:f24ba3a89ec1 1840 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 1841
danghuutoan 0:f24ba3a89ec1 1842 static
danghuutoan 0:f24ba3a89ec1 1843 FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
danghuutoan 0:f24ba3a89ec1 1844 DIR* dp, /* Pointer to the directory object */
danghuutoan 0:f24ba3a89ec1 1845 const TCHAR** path /* Pointer to pointer to the segment in the path string */
danghuutoan 0:f24ba3a89ec1 1846 )
danghuutoan 0:f24ba3a89ec1 1847 {
danghuutoan 0:f24ba3a89ec1 1848 #if _USE_LFN /* LFN configuration */
danghuutoan 0:f24ba3a89ec1 1849 BYTE b, cf;
danghuutoan 0:f24ba3a89ec1 1850 WCHAR w, *lfn;
danghuutoan 0:f24ba3a89ec1 1851 UINT i, ni, si, di;
danghuutoan 0:f24ba3a89ec1 1852 const TCHAR *p;
danghuutoan 0:f24ba3a89ec1 1853
danghuutoan 0:f24ba3a89ec1 1854 /* Create LFN in Unicode */
danghuutoan 0:f24ba3a89ec1 1855 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
danghuutoan 0:f24ba3a89ec1 1856 lfn = dp->lfn;
danghuutoan 0:f24ba3a89ec1 1857 si = di = 0;
danghuutoan 0:f24ba3a89ec1 1858 for (;;) {
danghuutoan 0:f24ba3a89ec1 1859 w = p[si++]; /* Get a character */
danghuutoan 0:f24ba3a89ec1 1860 if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
danghuutoan 0:f24ba3a89ec1 1861 if (di >= _MAX_LFN) /* Reject too long name */
danghuutoan 0:f24ba3a89ec1 1862 return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 1863 #if !_LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 1864 w &= 0xFF;
danghuutoan 0:f24ba3a89ec1 1865 if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
danghuutoan 0:f24ba3a89ec1 1866 b = (BYTE)p[si++]; /* Get 2nd byte */
danghuutoan 0:f24ba3a89ec1 1867 w = (w << 8) + b; /* Create a DBC */
danghuutoan 0:f24ba3a89ec1 1868 if (!IsDBCS2(b))
danghuutoan 0:f24ba3a89ec1 1869 return FR_INVALID_NAME; /* Reject invalid sequence */
danghuutoan 0:f24ba3a89ec1 1870 }
danghuutoan 0:f24ba3a89ec1 1871 w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
danghuutoan 0:f24ba3a89ec1 1872 if (!w) return FR_INVALID_NAME; /* Reject invalid code */
danghuutoan 0:f24ba3a89ec1 1873 #endif
danghuutoan 0:f24ba3a89ec1 1874 if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */
danghuutoan 0:f24ba3a89ec1 1875 return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 1876 lfn[di++] = w; /* Store the Unicode character */
danghuutoan 0:f24ba3a89ec1 1877 }
danghuutoan 0:f24ba3a89ec1 1878 *path = &p[si]; /* Return pointer to the next segment */
danghuutoan 0:f24ba3a89ec1 1879 cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
danghuutoan 0:f24ba3a89ec1 1880 #if _FS_RPATH
danghuutoan 0:f24ba3a89ec1 1881 if ((di == 1 && lfn[di - 1] == '.') ||
danghuutoan 0:f24ba3a89ec1 1882 (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot entry? */
danghuutoan 0:f24ba3a89ec1 1883 lfn[di] = 0;
danghuutoan 0:f24ba3a89ec1 1884 for (i = 0; i < 11; i++) /* Create dot name for SFN entry */
danghuutoan 0:f24ba3a89ec1 1885 dp->fn[i] = (i < di) ? '.' : ' ';
danghuutoan 0:f24ba3a89ec1 1886 dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
danghuutoan 0:f24ba3a89ec1 1887 return FR_OK;
danghuutoan 0:f24ba3a89ec1 1888 }
danghuutoan 0:f24ba3a89ec1 1889 #endif
danghuutoan 0:f24ba3a89ec1 1890 while (di) { /* Snip off trailing spaces and dots if exist */
danghuutoan 0:f24ba3a89ec1 1891 w = lfn[di - 1];
danghuutoan 0:f24ba3a89ec1 1892 if (w != ' ' && w != '.') break;
danghuutoan 0:f24ba3a89ec1 1893 di--;
danghuutoan 0:f24ba3a89ec1 1894 }
danghuutoan 0:f24ba3a89ec1 1895 if (!di) return FR_INVALID_NAME; /* Reject nul string */
danghuutoan 0:f24ba3a89ec1 1896 lfn[di] = 0; /* LFN is created */
danghuutoan 0:f24ba3a89ec1 1897
danghuutoan 0:f24ba3a89ec1 1898 /* Create SFN in directory form */
danghuutoan 0:f24ba3a89ec1 1899 mem_set(dp->fn, ' ', 11);
danghuutoan 0:f24ba3a89ec1 1900 for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
danghuutoan 0:f24ba3a89ec1 1901 if (si) cf |= NS_LOSS | NS_LFN;
danghuutoan 0:f24ba3a89ec1 1902 while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
danghuutoan 0:f24ba3a89ec1 1903
danghuutoan 0:f24ba3a89ec1 1904 b = i = 0; ni = 8;
danghuutoan 0:f24ba3a89ec1 1905 for (;;) {
danghuutoan 0:f24ba3a89ec1 1906 w = lfn[si++]; /* Get an LFN character */
danghuutoan 0:f24ba3a89ec1 1907 if (!w) break; /* Break on end of the LFN */
danghuutoan 0:f24ba3a89ec1 1908 if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
danghuutoan 0:f24ba3a89ec1 1909 cf |= NS_LOSS | NS_LFN; continue;
danghuutoan 0:f24ba3a89ec1 1910 }
danghuutoan 0:f24ba3a89ec1 1911
danghuutoan 0:f24ba3a89ec1 1912 if (i >= ni || si == di) { /* Extension or end of SFN */
danghuutoan 0:f24ba3a89ec1 1913 if (ni == 11) { /* Long extension */
danghuutoan 0:f24ba3a89ec1 1914 cf |= NS_LOSS | NS_LFN; break;
danghuutoan 0:f24ba3a89ec1 1915 }
danghuutoan 0:f24ba3a89ec1 1916 if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
danghuutoan 0:f24ba3a89ec1 1917 if (si > di) break; /* No extension */
danghuutoan 0:f24ba3a89ec1 1918 si = di; i = 8; ni = 11; /* Enter extension section */
danghuutoan 0:f24ba3a89ec1 1919 b <<= 2; continue;
danghuutoan 0:f24ba3a89ec1 1920 }
danghuutoan 0:f24ba3a89ec1 1921
danghuutoan 0:f24ba3a89ec1 1922 if (w >= 0x80) { /* Non ASCII character */
danghuutoan 0:f24ba3a89ec1 1923 #ifdef _EXCVT
danghuutoan 0:f24ba3a89ec1 1924 w = ff_convert(w, 0); /* Unicode -> OEM code */
danghuutoan 0:f24ba3a89ec1 1925 if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
danghuutoan 0:f24ba3a89ec1 1926 #else
danghuutoan 0:f24ba3a89ec1 1927 w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
danghuutoan 0:f24ba3a89ec1 1928 #endif
danghuutoan 0:f24ba3a89ec1 1929 cf |= NS_LFN; /* Force create LFN entry */
danghuutoan 0:f24ba3a89ec1 1930 }
danghuutoan 0:f24ba3a89ec1 1931
danghuutoan 0:f24ba3a89ec1 1932 if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */
danghuutoan 0:f24ba3a89ec1 1933 if (i >= ni - 1) {
danghuutoan 0:f24ba3a89ec1 1934 cf |= NS_LOSS | NS_LFN; i = ni; continue;
danghuutoan 0:f24ba3a89ec1 1935 }
danghuutoan 0:f24ba3a89ec1 1936 dp->fn[i++] = (BYTE)(w >> 8);
danghuutoan 0:f24ba3a89ec1 1937 } else { /* SBC */
danghuutoan 0:f24ba3a89ec1 1938 if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
danghuutoan 0:f24ba3a89ec1 1939 w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
danghuutoan 0:f24ba3a89ec1 1940 } else {
danghuutoan 0:f24ba3a89ec1 1941 if (IsUpper(w)) { /* ASCII large capital */
danghuutoan 0:f24ba3a89ec1 1942 b |= 2;
danghuutoan 0:f24ba3a89ec1 1943 } else {
danghuutoan 0:f24ba3a89ec1 1944 if (IsLower(w)) { /* ASCII small capital */
danghuutoan 0:f24ba3a89ec1 1945 b |= 1; w -= 0x20;
danghuutoan 0:f24ba3a89ec1 1946 }
danghuutoan 0:f24ba3a89ec1 1947 }
danghuutoan 0:f24ba3a89ec1 1948 }
danghuutoan 0:f24ba3a89ec1 1949 }
danghuutoan 0:f24ba3a89ec1 1950 dp->fn[i++] = (BYTE)w;
danghuutoan 0:f24ba3a89ec1 1951 }
danghuutoan 0:f24ba3a89ec1 1952
danghuutoan 0:f24ba3a89ec1 1953 if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
danghuutoan 0:f24ba3a89ec1 1954
danghuutoan 0:f24ba3a89ec1 1955 if (ni == 8) b <<= 2;
danghuutoan 0:f24ba3a89ec1 1956 if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
danghuutoan 0:f24ba3a89ec1 1957 cf |= NS_LFN;
danghuutoan 0:f24ba3a89ec1 1958 if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
danghuutoan 0:f24ba3a89ec1 1959 if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
danghuutoan 0:f24ba3a89ec1 1960 if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
danghuutoan 0:f24ba3a89ec1 1961 }
danghuutoan 0:f24ba3a89ec1 1962
danghuutoan 0:f24ba3a89ec1 1963 dp->fn[NSFLAG] = cf; /* SFN is created */
danghuutoan 0:f24ba3a89ec1 1964
danghuutoan 0:f24ba3a89ec1 1965 return FR_OK;
danghuutoan 0:f24ba3a89ec1 1966
danghuutoan 0:f24ba3a89ec1 1967
danghuutoan 0:f24ba3a89ec1 1968 #else /* Non-LFN configuration */
danghuutoan 0:f24ba3a89ec1 1969 BYTE b, c, d, *sfn;
danghuutoan 0:f24ba3a89ec1 1970 UINT ni, si, i;
danghuutoan 0:f24ba3a89ec1 1971 const char *p;
danghuutoan 0:f24ba3a89ec1 1972
danghuutoan 0:f24ba3a89ec1 1973 /* Create file name in directory form */
danghuutoan 0:f24ba3a89ec1 1974 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Skip duplicated separator */
danghuutoan 0:f24ba3a89ec1 1975 sfn = dp->fn;
danghuutoan 0:f24ba3a89ec1 1976 mem_set(sfn, ' ', 11);
danghuutoan 0:f24ba3a89ec1 1977 si = i = b = 0; ni = 8;
danghuutoan 0:f24ba3a89ec1 1978 #if _FS_RPATH
danghuutoan 0:f24ba3a89ec1 1979 if (p[si] == '.') { /* Is this a dot entry? */
danghuutoan 0:f24ba3a89ec1 1980 for (;;) {
danghuutoan 0:f24ba3a89ec1 1981 c = (BYTE)p[si++];
danghuutoan 0:f24ba3a89ec1 1982 if (c != '.' || si >= 3) break;
danghuutoan 0:f24ba3a89ec1 1983 sfn[i++] = c;
danghuutoan 0:f24ba3a89ec1 1984 }
danghuutoan 0:f24ba3a89ec1 1985 if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 1986 *path = &p[si]; /* Return pointer to the next segment */
danghuutoan 0:f24ba3a89ec1 1987 sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
danghuutoan 0:f24ba3a89ec1 1988 return FR_OK;
danghuutoan 0:f24ba3a89ec1 1989 }
danghuutoan 0:f24ba3a89ec1 1990 #endif
danghuutoan 0:f24ba3a89ec1 1991 for (;;) {
danghuutoan 0:f24ba3a89ec1 1992 c = (BYTE)p[si++];
danghuutoan 0:f24ba3a89ec1 1993 if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
danghuutoan 0:f24ba3a89ec1 1994 if (c == '.' || i >= ni) {
danghuutoan 0:f24ba3a89ec1 1995 if (ni != 8 || c != '.') return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 1996 i = 8; ni = 11;
danghuutoan 0:f24ba3a89ec1 1997 b <<= 2; continue;
danghuutoan 0:f24ba3a89ec1 1998 }
danghuutoan 0:f24ba3a89ec1 1999 if (c >= 0x80) { /* Extended character? */
danghuutoan 0:f24ba3a89ec1 2000 b |= 3; /* Eliminate NT flag */
danghuutoan 0:f24ba3a89ec1 2001 #ifdef _EXCVT
danghuutoan 0:f24ba3a89ec1 2002 c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
danghuutoan 0:f24ba3a89ec1 2003 #else
danghuutoan 0:f24ba3a89ec1 2004 #if !_DF1S
danghuutoan 0:f24ba3a89ec1 2005 return FR_INVALID_NAME; /* Reject extended characters (ASCII cfg) */
danghuutoan 0:f24ba3a89ec1 2006 #endif
danghuutoan 0:f24ba3a89ec1 2007 #endif
danghuutoan 0:f24ba3a89ec1 2008 }
danghuutoan 0:f24ba3a89ec1 2009 if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
danghuutoan 0:f24ba3a89ec1 2010 d = (BYTE)p[si++]; /* Get 2nd byte */
danghuutoan 0:f24ba3a89ec1 2011 if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
danghuutoan 0:f24ba3a89ec1 2012 return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 2013 sfn[i++] = c;
danghuutoan 0:f24ba3a89ec1 2014 sfn[i++] = d;
danghuutoan 0:f24ba3a89ec1 2015 } else { /* SBC */
danghuutoan 0:f24ba3a89ec1 2016 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
danghuutoan 0:f24ba3a89ec1 2017 return FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 2018 if (IsUpper(c)) { /* ASCII large capital? */
danghuutoan 0:f24ba3a89ec1 2019 b |= 2;
danghuutoan 0:f24ba3a89ec1 2020 } else {
danghuutoan 0:f24ba3a89ec1 2021 if (IsLower(c)) { /* ASCII small capital? */
danghuutoan 0:f24ba3a89ec1 2022 b |= 1; c -= 0x20;
danghuutoan 0:f24ba3a89ec1 2023 }
danghuutoan 0:f24ba3a89ec1 2024 }
danghuutoan 0:f24ba3a89ec1 2025 sfn[i++] = c;
danghuutoan 0:f24ba3a89ec1 2026 }
danghuutoan 0:f24ba3a89ec1 2027 }
danghuutoan 0:f24ba3a89ec1 2028 *path = &p[si]; /* Return pointer to the next segment */
danghuutoan 0:f24ba3a89ec1 2029 c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
danghuutoan 0:f24ba3a89ec1 2030
danghuutoan 0:f24ba3a89ec1 2031 if (!i) return FR_INVALID_NAME; /* Reject nul string */
danghuutoan 0:f24ba3a89ec1 2032 if (sfn[0] == DDEM) sfn[0] = RDDEM; /* When first character collides with DDEM, replace it with RDDEM */
danghuutoan 0:f24ba3a89ec1 2033
danghuutoan 0:f24ba3a89ec1 2034 if (ni == 8) b <<= 2;
danghuutoan 0:f24ba3a89ec1 2035 if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
danghuutoan 0:f24ba3a89ec1 2036 if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
danghuutoan 0:f24ba3a89ec1 2037
danghuutoan 0:f24ba3a89ec1 2038 sfn[NSFLAG] = c; /* Store NT flag, File name is created */
danghuutoan 0:f24ba3a89ec1 2039
danghuutoan 0:f24ba3a89ec1 2040 return FR_OK;
danghuutoan 0:f24ba3a89ec1 2041 #endif
danghuutoan 0:f24ba3a89ec1 2042 }
danghuutoan 0:f24ba3a89ec1 2043
danghuutoan 0:f24ba3a89ec1 2044
danghuutoan 0:f24ba3a89ec1 2045
danghuutoan 0:f24ba3a89ec1 2046
danghuutoan 0:f24ba3a89ec1 2047 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2048 /* Follow a file path */
danghuutoan 0:f24ba3a89ec1 2049 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2050
danghuutoan 0:f24ba3a89ec1 2051 static
danghuutoan 0:f24ba3a89ec1 2052 FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
danghuutoan 0:f24ba3a89ec1 2053 DIR* dp, /* Directory object to return last directory and found object */
danghuutoan 0:f24ba3a89ec1 2054 const TCHAR* path /* Full-path string to find a file or directory */
danghuutoan 0:f24ba3a89ec1 2055 )
danghuutoan 0:f24ba3a89ec1 2056 {
danghuutoan 0:f24ba3a89ec1 2057 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2058 BYTE *dir, ns;
danghuutoan 0:f24ba3a89ec1 2059
danghuutoan 0:f24ba3a89ec1 2060
danghuutoan 0:f24ba3a89ec1 2061 #if _FS_RPATH
danghuutoan 0:f24ba3a89ec1 2062 if (*path == '/' || *path == '\\') { /* There is a heading separator */
danghuutoan 0:f24ba3a89ec1 2063 path++; dp->sclust = 0; /* Strip it and start from the root directory */
danghuutoan 0:f24ba3a89ec1 2064 } else { /* No heading separator */
danghuutoan 0:f24ba3a89ec1 2065 dp->sclust = dp->fs->cdir; /* Start from the current directory */
danghuutoan 0:f24ba3a89ec1 2066 }
danghuutoan 0:f24ba3a89ec1 2067 #else
danghuutoan 0:f24ba3a89ec1 2068 if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
danghuutoan 0:f24ba3a89ec1 2069 path++;
danghuutoan 0:f24ba3a89ec1 2070 dp->sclust = 0; /* Always start from the root directory */
danghuutoan 0:f24ba3a89ec1 2071 #endif
danghuutoan 0:f24ba3a89ec1 2072
danghuutoan 0:f24ba3a89ec1 2073 if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
danghuutoan 0:f24ba3a89ec1 2074 res = dir_sdi(dp, 0);
danghuutoan 0:f24ba3a89ec1 2075 dp->dir = 0;
danghuutoan 0:f24ba3a89ec1 2076 } else { /* Follow path */
danghuutoan 0:f24ba3a89ec1 2077 for (;;) {
danghuutoan 0:f24ba3a89ec1 2078 res = create_name(dp, &path); /* Get a segment name of the path */
danghuutoan 0:f24ba3a89ec1 2079 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2080 res = dir_find(dp); /* Find an object with the sagment name */
danghuutoan 0:f24ba3a89ec1 2081 ns = dp->fn[NSFLAG];
danghuutoan 0:f24ba3a89ec1 2082 if (res != FR_OK) { /* Failed to find the object */
danghuutoan 0:f24ba3a89ec1 2083 if (res == FR_NO_FILE) { /* Object is not found */
danghuutoan 0:f24ba3a89ec1 2084 if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, */
danghuutoan 0:f24ba3a89ec1 2085 dp->sclust = 0; dp->dir = 0; /* it is the root directory and stay there */
danghuutoan 0:f24ba3a89ec1 2086 if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
danghuutoan 0:f24ba3a89ec1 2087 res = FR_OK; /* Ended at the root directroy. Function completed. */
danghuutoan 0:f24ba3a89ec1 2088 } else { /* Could not find the object */
danghuutoan 0:f24ba3a89ec1 2089 if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
danghuutoan 0:f24ba3a89ec1 2090 }
danghuutoan 0:f24ba3a89ec1 2091 }
danghuutoan 0:f24ba3a89ec1 2092 break;
danghuutoan 0:f24ba3a89ec1 2093 }
danghuutoan 0:f24ba3a89ec1 2094 if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
danghuutoan 0:f24ba3a89ec1 2095 dir = dp->dir; /* Follow the sub-directory */
danghuutoan 0:f24ba3a89ec1 2096 if (!(dir[DIR_Attr] & AM_DIR)) { /* It is not a sub-directory and cannot follow */
danghuutoan 0:f24ba3a89ec1 2097 res = FR_NO_PATH; break;
danghuutoan 0:f24ba3a89ec1 2098 }
danghuutoan 0:f24ba3a89ec1 2099 dp->sclust = ld_clust(dp->fs, dir);
danghuutoan 0:f24ba3a89ec1 2100 }
danghuutoan 0:f24ba3a89ec1 2101 }
danghuutoan 0:f24ba3a89ec1 2102
danghuutoan 0:f24ba3a89ec1 2103 return res;
danghuutoan 0:f24ba3a89ec1 2104 }
danghuutoan 0:f24ba3a89ec1 2105
danghuutoan 0:f24ba3a89ec1 2106
danghuutoan 0:f24ba3a89ec1 2107
danghuutoan 0:f24ba3a89ec1 2108
danghuutoan 0:f24ba3a89ec1 2109 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2110 /* Get logical drive number from path name */
danghuutoan 0:f24ba3a89ec1 2111 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2112
danghuutoan 0:f24ba3a89ec1 2113 static
danghuutoan 0:f24ba3a89ec1 2114 int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
danghuutoan 0:f24ba3a89ec1 2115 const TCHAR** path /* Pointer to pointer to the path name */
danghuutoan 0:f24ba3a89ec1 2116 )
danghuutoan 0:f24ba3a89ec1 2117 {
danghuutoan 0:f24ba3a89ec1 2118 const TCHAR *tp, *tt;
danghuutoan 0:f24ba3a89ec1 2119 UINT i;
danghuutoan 0:f24ba3a89ec1 2120 int vol = -1;
danghuutoan 0:f24ba3a89ec1 2121 #if _STR_VOLUME_ID /* Find string drive id */
danghuutoan 0:f24ba3a89ec1 2122 static const char* const str[] = {_VOLUME_STRS};
danghuutoan 0:f24ba3a89ec1 2123 const char *sp;
danghuutoan 0:f24ba3a89ec1 2124 char c;
danghuutoan 0:f24ba3a89ec1 2125 TCHAR tc;
danghuutoan 0:f24ba3a89ec1 2126 #endif
danghuutoan 0:f24ba3a89ec1 2127
danghuutoan 0:f24ba3a89ec1 2128
danghuutoan 0:f24ba3a89ec1 2129 if (*path) { /* If the pointer is not a null */
danghuutoan 0:f24ba3a89ec1 2130 for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */
danghuutoan 0:f24ba3a89ec1 2131 if (*tt == ':') { /* If a ':' is exist in the path name */
danghuutoan 0:f24ba3a89ec1 2132 tp = *path;
danghuutoan 0:f24ba3a89ec1 2133 i = *tp++ - '0';
danghuutoan 0:f24ba3a89ec1 2134 if (i < 10 && tp == tt) { /* Is there a numeric drive id? */
danghuutoan 0:f24ba3a89ec1 2135 if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
danghuutoan 0:f24ba3a89ec1 2136 vol = (int)i;
danghuutoan 0:f24ba3a89ec1 2137 *path = ++tt;
danghuutoan 0:f24ba3a89ec1 2138 }
danghuutoan 0:f24ba3a89ec1 2139 }
danghuutoan 0:f24ba3a89ec1 2140 #if _STR_VOLUME_ID
danghuutoan 0:f24ba3a89ec1 2141 else { /* No numeric drive number, find string drive id */
danghuutoan 0:f24ba3a89ec1 2142 i = 0; tt++;
danghuutoan 0:f24ba3a89ec1 2143 do {
danghuutoan 0:f24ba3a89ec1 2144 sp = str[i]; tp = *path;
danghuutoan 0:f24ba3a89ec1 2145 do { /* Compare a string drive id with path name */
danghuutoan 0:f24ba3a89ec1 2146 c = *sp++; tc = *tp++;
danghuutoan 0:f24ba3a89ec1 2147 if (IsLower(tc)) tc -= 0x20;
danghuutoan 0:f24ba3a89ec1 2148 } while (c && (TCHAR)c == tc);
danghuutoan 0:f24ba3a89ec1 2149 } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */
danghuutoan 0:f24ba3a89ec1 2150 if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
danghuutoan 0:f24ba3a89ec1 2151 vol = (int)i;
danghuutoan 0:f24ba3a89ec1 2152 *path = tt;
danghuutoan 0:f24ba3a89ec1 2153 }
danghuutoan 0:f24ba3a89ec1 2154 }
danghuutoan 0:f24ba3a89ec1 2155 #endif
danghuutoan 0:f24ba3a89ec1 2156 return vol;
danghuutoan 0:f24ba3a89ec1 2157 }
danghuutoan 0:f24ba3a89ec1 2158 #if _FS_RPATH && _VOLUMES >= 2
danghuutoan 0:f24ba3a89ec1 2159 vol = CurrVol; /* Current drive */
danghuutoan 0:f24ba3a89ec1 2160 #else
danghuutoan 0:f24ba3a89ec1 2161 vol = 0; /* Drive 0 */
danghuutoan 0:f24ba3a89ec1 2162 #endif
danghuutoan 0:f24ba3a89ec1 2163 }
danghuutoan 0:f24ba3a89ec1 2164 return vol;
danghuutoan 0:f24ba3a89ec1 2165 }
danghuutoan 0:f24ba3a89ec1 2166
danghuutoan 0:f24ba3a89ec1 2167
danghuutoan 0:f24ba3a89ec1 2168
danghuutoan 0:f24ba3a89ec1 2169
danghuutoan 0:f24ba3a89ec1 2170 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2171 /* Load a sector and check if it is an FAT boot sector */
danghuutoan 0:f24ba3a89ec1 2172 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2173
danghuutoan 0:f24ba3a89ec1 2174 static
danghuutoan 0:f24ba3a89ec1 2175 BYTE check_fs ( /* 0:Valid FAT-BS, 1:Valid BS but not FAT, 2:Not a BS, 3:Disk error */
danghuutoan 0:f24ba3a89ec1 2176 FATFS* fs, /* File system object */
danghuutoan 0:f24ba3a89ec1 2177 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
danghuutoan 0:f24ba3a89ec1 2178 )
danghuutoan 0:f24ba3a89ec1 2179 {
danghuutoan 0:f24ba3a89ec1 2180 fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
danghuutoan 0:f24ba3a89ec1 2181 if (move_window(fs, sect) != FR_OK) /* Load boot record */
danghuutoan 0:f24ba3a89ec1 2182 return 3;
danghuutoan 0:f24ba3a89ec1 2183
danghuutoan 0:f24ba3a89ec1 2184 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
danghuutoan 0:f24ba3a89ec1 2185 return 2;
danghuutoan 0:f24ba3a89ec1 2186
danghuutoan 0:f24ba3a89ec1 2187 if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
danghuutoan 0:f24ba3a89ec1 2188 return 0;
danghuutoan 0:f24ba3a89ec1 2189 if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
danghuutoan 0:f24ba3a89ec1 2190 return 0;
danghuutoan 0:f24ba3a89ec1 2191
danghuutoan 0:f24ba3a89ec1 2192 return 1;
danghuutoan 0:f24ba3a89ec1 2193 }
danghuutoan 0:f24ba3a89ec1 2194
danghuutoan 0:f24ba3a89ec1 2195
danghuutoan 0:f24ba3a89ec1 2196
danghuutoan 0:f24ba3a89ec1 2197
danghuutoan 0:f24ba3a89ec1 2198 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2199 /* Find logical drive and check if the volume is mounted */
danghuutoan 0:f24ba3a89ec1 2200 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2201
danghuutoan 0:f24ba3a89ec1 2202 static
danghuutoan 0:f24ba3a89ec1 2203 FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
danghuutoan 0:f24ba3a89ec1 2204 FATFS** rfs, /* Pointer to pointer to the found file system object */
danghuutoan 0:f24ba3a89ec1 2205 const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
danghuutoan 0:f24ba3a89ec1 2206 BYTE wmode /* !=0: Check write protection for write access */
danghuutoan 0:f24ba3a89ec1 2207 )
danghuutoan 0:f24ba3a89ec1 2208 {
danghuutoan 0:f24ba3a89ec1 2209 BYTE fmt, *pt;
danghuutoan 0:f24ba3a89ec1 2210 int vol;
danghuutoan 0:f24ba3a89ec1 2211 DSTATUS stat;
danghuutoan 0:f24ba3a89ec1 2212 DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
danghuutoan 0:f24ba3a89ec1 2213 WORD nrsv;
danghuutoan 0:f24ba3a89ec1 2214 FATFS *fs;
danghuutoan 0:f24ba3a89ec1 2215 UINT i;
danghuutoan 0:f24ba3a89ec1 2216
danghuutoan 0:f24ba3a89ec1 2217
danghuutoan 0:f24ba3a89ec1 2218 /* Get logical drive number from the path name */
danghuutoan 0:f24ba3a89ec1 2219 *rfs = 0;
danghuutoan 0:f24ba3a89ec1 2220 vol = get_ldnumber(path);
danghuutoan 0:f24ba3a89ec1 2221 if (vol < 0) return FR_INVALID_DRIVE;
danghuutoan 0:f24ba3a89ec1 2222
danghuutoan 0:f24ba3a89ec1 2223 /* Check if the file system object is valid or not */
danghuutoan 0:f24ba3a89ec1 2224 fs = FatFs[vol]; /* Get pointer to the file system object */
danghuutoan 0:f24ba3a89ec1 2225 if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
danghuutoan 0:f24ba3a89ec1 2226
danghuutoan 0:f24ba3a89ec1 2227 ENTER_FF(fs); /* Lock the volume */
danghuutoan 0:f24ba3a89ec1 2228 *rfs = fs; /* Return pointer to the file system object */
danghuutoan 0:f24ba3a89ec1 2229
danghuutoan 0:f24ba3a89ec1 2230 if (fs->fs_type) { /* If the volume has been mounted */
danghuutoan 0:f24ba3a89ec1 2231 stat = disk_status(fs->drv);
danghuutoan 0:f24ba3a89ec1 2232 if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
danghuutoan 0:f24ba3a89ec1 2233 if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
danghuutoan 0:f24ba3a89ec1 2234 return FR_WRITE_PROTECTED;
danghuutoan 0:f24ba3a89ec1 2235 return FR_OK; /* The file system object is valid */
danghuutoan 0:f24ba3a89ec1 2236 }
danghuutoan 0:f24ba3a89ec1 2237 }
danghuutoan 0:f24ba3a89ec1 2238
danghuutoan 0:f24ba3a89ec1 2239 /* The file system object is not valid. */
danghuutoan 0:f24ba3a89ec1 2240 /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
danghuutoan 0:f24ba3a89ec1 2241
danghuutoan 0:f24ba3a89ec1 2242 fs->fs_type = 0; /* Clear the file system object */
danghuutoan 0:f24ba3a89ec1 2243 fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
danghuutoan 0:f24ba3a89ec1 2244 stat = disk_initialize(fs->drv); /* Initialize the physical drive */
danghuutoan 0:f24ba3a89ec1 2245 if (stat & STA_NOINIT) /* Check if the initialization succeeded */
danghuutoan 0:f24ba3a89ec1 2246 return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
danghuutoan 0:f24ba3a89ec1 2247 if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
danghuutoan 0:f24ba3a89ec1 2248 return FR_WRITE_PROTECTED;
danghuutoan 0:f24ba3a89ec1 2249 #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
danghuutoan 0:f24ba3a89ec1 2250 if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
danghuutoan 0:f24ba3a89ec1 2251 || SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 2252 #endif
danghuutoan 0:f24ba3a89ec1 2253 /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
danghuutoan 0:f24ba3a89ec1 2254 bsect = 0;
danghuutoan 0:f24ba3a89ec1 2255 fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */
danghuutoan 0:f24ba3a89ec1 2256 if (fmt == 1 || (!fmt && (LD2PT(vol)))) { /* Not an FAT boot sector or forced partition number */
danghuutoan 0:f24ba3a89ec1 2257 for (i = 0; i < 4; i++) { /* Get partition offset */
danghuutoan 0:f24ba3a89ec1 2258 pt = fs->win + MBR_Table + i * SZ_PTE;
danghuutoan 0:f24ba3a89ec1 2259 br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;
danghuutoan 0:f24ba3a89ec1 2260 }
danghuutoan 0:f24ba3a89ec1 2261 i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
danghuutoan 0:f24ba3a89ec1 2262 if (i) i--;
danghuutoan 0:f24ba3a89ec1 2263 do { /* Find an FAT volume */
danghuutoan 0:f24ba3a89ec1 2264 bsect = br[i];
danghuutoan 0:f24ba3a89ec1 2265 fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */
danghuutoan 0:f24ba3a89ec1 2266 } while (!LD2PT(vol) && fmt && ++i < 4);
danghuutoan 0:f24ba3a89ec1 2267 }
danghuutoan 0:f24ba3a89ec1 2268 if (fmt == 3) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
danghuutoan 0:f24ba3a89ec1 2269 if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
danghuutoan 0:f24ba3a89ec1 2270
danghuutoan 0:f24ba3a89ec1 2271 /* An FAT volume is found. Following code initializes the file system object */
danghuutoan 0:f24ba3a89ec1 2272
danghuutoan 0:f24ba3a89ec1 2273 if (LD_WORD(fs->win + BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
danghuutoan 0:f24ba3a89ec1 2274 return FR_NO_FILESYSTEM;
danghuutoan 0:f24ba3a89ec1 2275
danghuutoan 0:f24ba3a89ec1 2276 fasize = LD_WORD(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
danghuutoan 0:f24ba3a89ec1 2277 if (!fasize) fasize = LD_DWORD(fs->win + BPB_FATSz32);
danghuutoan 0:f24ba3a89ec1 2278 fs->fsize = fasize;
danghuutoan 0:f24ba3a89ec1 2279
danghuutoan 0:f24ba3a89ec1 2280 fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
danghuutoan 0:f24ba3a89ec1 2281 if (fs->n_fats != 1 && fs->n_fats != 2) /* (Must be 1 or 2) */
danghuutoan 0:f24ba3a89ec1 2282 return FR_NO_FILESYSTEM;
danghuutoan 0:f24ba3a89ec1 2283 fasize *= fs->n_fats; /* Number of sectors for FAT area */
danghuutoan 0:f24ba3a89ec1 2284
danghuutoan 0:f24ba3a89ec1 2285 fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
danghuutoan 0:f24ba3a89ec1 2286 if (!fs->csize || (fs->csize & (fs->csize - 1))) /* (Must be power of 2) */
danghuutoan 0:f24ba3a89ec1 2287 return FR_NO_FILESYSTEM;
danghuutoan 0:f24ba3a89ec1 2288
danghuutoan 0:f24ba3a89ec1 2289 fs->n_rootdir = LD_WORD(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
danghuutoan 0:f24ba3a89ec1 2290 if (fs->n_rootdir % (SS(fs) / SZ_DIRE)) /* (Must be sector aligned) */
danghuutoan 0:f24ba3a89ec1 2291 return FR_NO_FILESYSTEM;
danghuutoan 0:f24ba3a89ec1 2292
danghuutoan 0:f24ba3a89ec1 2293 tsect = LD_WORD(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
danghuutoan 0:f24ba3a89ec1 2294 if (!tsect) tsect = LD_DWORD(fs->win + BPB_TotSec32);
danghuutoan 0:f24ba3a89ec1 2295
danghuutoan 0:f24ba3a89ec1 2296 nrsv = LD_WORD(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
danghuutoan 0:f24ba3a89ec1 2297 if (!nrsv) return FR_NO_FILESYSTEM; /* (Must not be 0) */
danghuutoan 0:f24ba3a89ec1 2298
danghuutoan 0:f24ba3a89ec1 2299 /* Determine the FAT sub type */
danghuutoan 0:f24ba3a89ec1 2300 sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIRE); /* RSV + FAT + DIR */
danghuutoan 0:f24ba3a89ec1 2301 if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
danghuutoan 0:f24ba3a89ec1 2302 nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
danghuutoan 0:f24ba3a89ec1 2303 if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
danghuutoan 0:f24ba3a89ec1 2304 fmt = FS_FAT12;
danghuutoan 0:f24ba3a89ec1 2305 if (nclst >= MIN_FAT16) fmt = FS_FAT16;
danghuutoan 0:f24ba3a89ec1 2306 if (nclst >= MIN_FAT32) fmt = FS_FAT32;
danghuutoan 0:f24ba3a89ec1 2307
danghuutoan 0:f24ba3a89ec1 2308 /* Boundaries and Limits */
danghuutoan 0:f24ba3a89ec1 2309 fs->n_fatent = nclst + 2; /* Number of FAT entries */
danghuutoan 0:f24ba3a89ec1 2310 fs->volbase = bsect; /* Volume start sector */
danghuutoan 0:f24ba3a89ec1 2311 fs->fatbase = bsect + nrsv; /* FAT start sector */
danghuutoan 0:f24ba3a89ec1 2312 fs->database = bsect + sysect; /* Data start sector */
danghuutoan 0:f24ba3a89ec1 2313 if (fmt == FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 2314 if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
danghuutoan 0:f24ba3a89ec1 2315 fs->dirbase = LD_DWORD(fs->win + BPB_RootClus); /* Root directory start cluster */
danghuutoan 0:f24ba3a89ec1 2316 szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
danghuutoan 0:f24ba3a89ec1 2317 } else {
danghuutoan 0:f24ba3a89ec1 2318 if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
danghuutoan 0:f24ba3a89ec1 2319 fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
danghuutoan 0:f24ba3a89ec1 2320 szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
danghuutoan 0:f24ba3a89ec1 2321 fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
danghuutoan 0:f24ba3a89ec1 2322 }
danghuutoan 0:f24ba3a89ec1 2323 if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than the size needed) */
danghuutoan 0:f24ba3a89ec1 2324 return FR_NO_FILESYSTEM;
danghuutoan 0:f24ba3a89ec1 2325
danghuutoan 0:f24ba3a89ec1 2326 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2327 /* Initialize cluster allocation information */
danghuutoan 0:f24ba3a89ec1 2328 fs->last_clust = fs->free_clust = 0xFFFFFFFF;
danghuutoan 0:f24ba3a89ec1 2329
danghuutoan 0:f24ba3a89ec1 2330 /* Get fsinfo if available */
danghuutoan 0:f24ba3a89ec1 2331 fs->fsi_flag = 0x80;
danghuutoan 0:f24ba3a89ec1 2332 #if (_FS_NOFSINFO & 3) != 3
danghuutoan 0:f24ba3a89ec1 2333 if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo == 1 */
danghuutoan 0:f24ba3a89ec1 2334 && LD_WORD(fs->win + BPB_FSInfo) == 1
danghuutoan 0:f24ba3a89ec1 2335 && move_window(fs, bsect + 1) == FR_OK)
danghuutoan 0:f24ba3a89ec1 2336 {
danghuutoan 0:f24ba3a89ec1 2337 fs->fsi_flag = 0;
danghuutoan 0:f24ba3a89ec1 2338 if (LD_WORD(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */
danghuutoan 0:f24ba3a89ec1 2339 && LD_DWORD(fs->win + FSI_LeadSig) == 0x41615252
danghuutoan 0:f24ba3a89ec1 2340 && LD_DWORD(fs->win + FSI_StrucSig) == 0x61417272)
danghuutoan 0:f24ba3a89ec1 2341 {
danghuutoan 0:f24ba3a89ec1 2342 #if (_FS_NOFSINFO & 1) == 0
danghuutoan 0:f24ba3a89ec1 2343 fs->free_clust = LD_DWORD(fs->win + FSI_Free_Count);
danghuutoan 0:f24ba3a89ec1 2344 #endif
danghuutoan 0:f24ba3a89ec1 2345 #if (_FS_NOFSINFO & 2) == 0
danghuutoan 0:f24ba3a89ec1 2346 fs->last_clust = LD_DWORD(fs->win + FSI_Nxt_Free);
danghuutoan 0:f24ba3a89ec1 2347 #endif
danghuutoan 0:f24ba3a89ec1 2348 }
danghuutoan 0:f24ba3a89ec1 2349 }
danghuutoan 0:f24ba3a89ec1 2350 #endif
danghuutoan 0:f24ba3a89ec1 2351 #endif
danghuutoan 0:f24ba3a89ec1 2352 fs->fs_type = fmt; /* FAT sub-type */
danghuutoan 0:f24ba3a89ec1 2353 fs->id = ++Fsid; /* File system mount ID */
danghuutoan 0:f24ba3a89ec1 2354 #if _FS_RPATH
danghuutoan 0:f24ba3a89ec1 2355 fs->cdir = 0; /* Set current directory to root */
danghuutoan 0:f24ba3a89ec1 2356 #endif
danghuutoan 0:f24ba3a89ec1 2357 #if _FS_LOCK /* Clear file lock semaphores */
danghuutoan 0:f24ba3a89ec1 2358 clear_lock(fs);
danghuutoan 0:f24ba3a89ec1 2359 #endif
danghuutoan 0:f24ba3a89ec1 2360
danghuutoan 0:f24ba3a89ec1 2361 return FR_OK;
danghuutoan 0:f24ba3a89ec1 2362 }
danghuutoan 0:f24ba3a89ec1 2363
danghuutoan 0:f24ba3a89ec1 2364
danghuutoan 0:f24ba3a89ec1 2365
danghuutoan 0:f24ba3a89ec1 2366
danghuutoan 0:f24ba3a89ec1 2367 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2368 /* Check if the file/directory object is valid or not */
danghuutoan 0:f24ba3a89ec1 2369 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2370
danghuutoan 0:f24ba3a89ec1 2371 static
danghuutoan 0:f24ba3a89ec1 2372 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
danghuutoan 0:f24ba3a89ec1 2373 void* obj /* Pointer to the object FIL/DIR to check validity */
danghuutoan 0:f24ba3a89ec1 2374 )
danghuutoan 0:f24ba3a89ec1 2375 {
danghuutoan 0:f24ba3a89ec1 2376 FIL *fil = (FIL*)obj; /* Assuming offset of .fs and .id in the FIL/DIR structure is identical */
danghuutoan 0:f24ba3a89ec1 2377
danghuutoan 0:f24ba3a89ec1 2378
danghuutoan 0:f24ba3a89ec1 2379 if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id || (disk_status(fil->fs->drv) & STA_NOINIT))
danghuutoan 0:f24ba3a89ec1 2380 return FR_INVALID_OBJECT;
danghuutoan 0:f24ba3a89ec1 2381
danghuutoan 0:f24ba3a89ec1 2382 ENTER_FF(fil->fs); /* Lock file system */
danghuutoan 0:f24ba3a89ec1 2383
danghuutoan 0:f24ba3a89ec1 2384 return FR_OK;
danghuutoan 0:f24ba3a89ec1 2385 }
danghuutoan 0:f24ba3a89ec1 2386
danghuutoan 0:f24ba3a89ec1 2387
danghuutoan 0:f24ba3a89ec1 2388
danghuutoan 0:f24ba3a89ec1 2389
danghuutoan 0:f24ba3a89ec1 2390 /*--------------------------------------------------------------------------
danghuutoan 0:f24ba3a89ec1 2391
danghuutoan 0:f24ba3a89ec1 2392 Public Functions
danghuutoan 0:f24ba3a89ec1 2393
danghuutoan 0:f24ba3a89ec1 2394 ---------------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2395
danghuutoan 0:f24ba3a89ec1 2396
danghuutoan 0:f24ba3a89ec1 2397
danghuutoan 0:f24ba3a89ec1 2398 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2399 /* Mount/Unmount a Logical Drive */
danghuutoan 0:f24ba3a89ec1 2400 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2401
danghuutoan 0:f24ba3a89ec1 2402 FRESULT f_mount (
danghuutoan 0:f24ba3a89ec1 2403 FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/
danghuutoan 0:f24ba3a89ec1 2404 const TCHAR* path, /* Logical drive number to be mounted/unmounted */
danghuutoan 0:f24ba3a89ec1 2405 BYTE opt /* 0:Do not mount (delayed mount), 1:Mount immediately */
danghuutoan 0:f24ba3a89ec1 2406 )
danghuutoan 0:f24ba3a89ec1 2407 {
danghuutoan 0:f24ba3a89ec1 2408 FATFS *cfs;
danghuutoan 0:f24ba3a89ec1 2409 int vol;
danghuutoan 0:f24ba3a89ec1 2410 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2411 const TCHAR *rp = path;
danghuutoan 0:f24ba3a89ec1 2412
danghuutoan 0:f24ba3a89ec1 2413
danghuutoan 0:f24ba3a89ec1 2414 vol = get_ldnumber(&rp);
danghuutoan 0:f24ba3a89ec1 2415 if (vol < 0) return FR_INVALID_DRIVE;
danghuutoan 0:f24ba3a89ec1 2416 cfs = FatFs[vol]; /* Pointer to fs object */
danghuutoan 0:f24ba3a89ec1 2417
danghuutoan 0:f24ba3a89ec1 2418 if (cfs) {
danghuutoan 0:f24ba3a89ec1 2419 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 2420 clear_lock(cfs);
danghuutoan 0:f24ba3a89ec1 2421 #endif
danghuutoan 0:f24ba3a89ec1 2422 #if _FS_REENTRANT /* Discard sync object of the current volume */
danghuutoan 0:f24ba3a89ec1 2423 if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 2424 #endif
danghuutoan 0:f24ba3a89ec1 2425 cfs->fs_type = 0; /* Clear old fs object */
danghuutoan 0:f24ba3a89ec1 2426 }
danghuutoan 0:f24ba3a89ec1 2427
danghuutoan 0:f24ba3a89ec1 2428 if (fs) {
danghuutoan 0:f24ba3a89ec1 2429 fs->fs_type = 0; /* Clear new fs object */
danghuutoan 0:f24ba3a89ec1 2430 #if _FS_REENTRANT /* Create sync object for the new volume */
danghuutoan 0:f24ba3a89ec1 2431 if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 2432 #endif
danghuutoan 0:f24ba3a89ec1 2433 }
danghuutoan 0:f24ba3a89ec1 2434 FatFs[vol] = fs; /* Register new fs object */
danghuutoan 0:f24ba3a89ec1 2435
danghuutoan 0:f24ba3a89ec1 2436 if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */
danghuutoan 0:f24ba3a89ec1 2437
danghuutoan 0:f24ba3a89ec1 2438 res = find_volume(&fs, &path, 0); /* Force mounted the volume */
danghuutoan 0:f24ba3a89ec1 2439 LEAVE_FF(fs, res);
danghuutoan 0:f24ba3a89ec1 2440 }
danghuutoan 0:f24ba3a89ec1 2441
danghuutoan 0:f24ba3a89ec1 2442
danghuutoan 0:f24ba3a89ec1 2443
danghuutoan 0:f24ba3a89ec1 2444
danghuutoan 0:f24ba3a89ec1 2445 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2446 /* Open or Create a File */
danghuutoan 0:f24ba3a89ec1 2447 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2448
danghuutoan 0:f24ba3a89ec1 2449 FRESULT f_open (
danghuutoan 0:f24ba3a89ec1 2450 FIL* fp, /* Pointer to the blank file object */
danghuutoan 0:f24ba3a89ec1 2451 const TCHAR* path, /* Pointer to the file name */
danghuutoan 0:f24ba3a89ec1 2452 BYTE mode /* Access mode and file open mode flags */
danghuutoan 0:f24ba3a89ec1 2453 )
danghuutoan 0:f24ba3a89ec1 2454 {
danghuutoan 0:f24ba3a89ec1 2455 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2456 DIR dj;
danghuutoan 0:f24ba3a89ec1 2457 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 2458 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 2459 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2460 DWORD dw, cl;
danghuutoan 0:f24ba3a89ec1 2461 #endif
danghuutoan 0:f24ba3a89ec1 2462
danghuutoan 0:f24ba3a89ec1 2463
danghuutoan 0:f24ba3a89ec1 2464 if (!fp) return FR_INVALID_OBJECT;
danghuutoan 0:f24ba3a89ec1 2465 fp->fs = 0; /* Clear file object */
danghuutoan 0:f24ba3a89ec1 2466
danghuutoan 0:f24ba3a89ec1 2467 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 2468 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2469 mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
danghuutoan 0:f24ba3a89ec1 2470 res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));
danghuutoan 0:f24ba3a89ec1 2471 #else
danghuutoan 0:f24ba3a89ec1 2472 mode &= FA_READ;
danghuutoan 0:f24ba3a89ec1 2473 res = find_volume(&dj.fs, &path, 0);
danghuutoan 0:f24ba3a89ec1 2474 #endif
danghuutoan 0:f24ba3a89ec1 2475 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2476 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 2477 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 2478 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 2479 #if !_FS_READONLY /* R/W configuration */
danghuutoan 0:f24ba3a89ec1 2480 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2481 if (!dir) /* Default directory itself */
danghuutoan 0:f24ba3a89ec1 2482 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 2483 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 2484 else
danghuutoan 0:f24ba3a89ec1 2485 res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
danghuutoan 0:f24ba3a89ec1 2486 #endif
danghuutoan 0:f24ba3a89ec1 2487 }
danghuutoan 0:f24ba3a89ec1 2488 /* Create or Open a file */
danghuutoan 0:f24ba3a89ec1 2489 if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
danghuutoan 0:f24ba3a89ec1 2490 if (res != FR_OK) { /* No file, create new */
danghuutoan 0:f24ba3a89ec1 2491 if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
danghuutoan 0:f24ba3a89ec1 2492 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 2493 res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
danghuutoan 0:f24ba3a89ec1 2494 #else
danghuutoan 0:f24ba3a89ec1 2495 res = dir_register(&dj);
danghuutoan 0:f24ba3a89ec1 2496 #endif
danghuutoan 0:f24ba3a89ec1 2497 mode |= FA_CREATE_ALWAYS; /* File is created */
danghuutoan 0:f24ba3a89ec1 2498 dir = dj.dir; /* New entry */
danghuutoan 0:f24ba3a89ec1 2499 }
danghuutoan 0:f24ba3a89ec1 2500 else { /* Any object is already existing */
danghuutoan 0:f24ba3a89ec1 2501 if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
danghuutoan 0:f24ba3a89ec1 2502 res = FR_DENIED;
danghuutoan 0:f24ba3a89ec1 2503 } else {
danghuutoan 0:f24ba3a89ec1 2504 if (mode & FA_CREATE_NEW) /* Cannot create as new file */
danghuutoan 0:f24ba3a89ec1 2505 res = FR_EXIST;
danghuutoan 0:f24ba3a89ec1 2506 }
danghuutoan 0:f24ba3a89ec1 2507 }
danghuutoan 0:f24ba3a89ec1 2508 if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
danghuutoan 0:f24ba3a89ec1 2509 dw = GET_FATTIME();
danghuutoan 0:f24ba3a89ec1 2510 ST_DWORD(dir + DIR_CrtTime, dw);/* Set created time */
danghuutoan 0:f24ba3a89ec1 2511 ST_DWORD(dir + DIR_WrtTime, dw);/* Set modified time */
danghuutoan 0:f24ba3a89ec1 2512 dir[DIR_Attr] = 0; /* Reset attribute */
danghuutoan 0:f24ba3a89ec1 2513 ST_DWORD(dir + DIR_FileSize, 0);/* Reset file size */
danghuutoan 0:f24ba3a89ec1 2514 cl = ld_clust(dj.fs, dir); /* Get cluster chain */
danghuutoan 0:f24ba3a89ec1 2515 st_clust(dir, 0); /* Reset cluster */
danghuutoan 0:f24ba3a89ec1 2516 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 2517 if (cl) { /* Remove the cluster chain if exist */
danghuutoan 0:f24ba3a89ec1 2518 dw = dj.fs->winsect;
danghuutoan 0:f24ba3a89ec1 2519 res = remove_chain(dj.fs, cl);
danghuutoan 0:f24ba3a89ec1 2520 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2521 dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
danghuutoan 0:f24ba3a89ec1 2522 res = move_window(dj.fs, dw);
danghuutoan 0:f24ba3a89ec1 2523 }
danghuutoan 0:f24ba3a89ec1 2524 }
danghuutoan 0:f24ba3a89ec1 2525 }
danghuutoan 0:f24ba3a89ec1 2526 }
danghuutoan 0:f24ba3a89ec1 2527 else { /* Open an existing file */
danghuutoan 0:f24ba3a89ec1 2528 if (res == FR_OK) { /* Following succeeded */
danghuutoan 0:f24ba3a89ec1 2529 if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
danghuutoan 0:f24ba3a89ec1 2530 res = FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 2531 } else {
danghuutoan 0:f24ba3a89ec1 2532 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
danghuutoan 0:f24ba3a89ec1 2533 res = FR_DENIED;
danghuutoan 0:f24ba3a89ec1 2534 }
danghuutoan 0:f24ba3a89ec1 2535 }
danghuutoan 0:f24ba3a89ec1 2536 }
danghuutoan 0:f24ba3a89ec1 2537 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2538 if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
danghuutoan 0:f24ba3a89ec1 2539 mode |= FA__WRITTEN;
danghuutoan 0:f24ba3a89ec1 2540 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
danghuutoan 0:f24ba3a89ec1 2541 fp->dir_ptr = dir;
danghuutoan 0:f24ba3a89ec1 2542 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 2543 fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
danghuutoan 0:f24ba3a89ec1 2544 if (!fp->lockid) res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 2545 #endif
danghuutoan 0:f24ba3a89ec1 2546 }
danghuutoan 0:f24ba3a89ec1 2547
danghuutoan 0:f24ba3a89ec1 2548 #else /* R/O configuration */
danghuutoan 0:f24ba3a89ec1 2549 if (res == FR_OK) { /* Follow succeeded */
danghuutoan 0:f24ba3a89ec1 2550 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 2551 if (!dir) { /* Current directory itself */
danghuutoan 0:f24ba3a89ec1 2552 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 2553 } else {
danghuutoan 0:f24ba3a89ec1 2554 if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
danghuutoan 0:f24ba3a89ec1 2555 res = FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 2556 }
danghuutoan 0:f24ba3a89ec1 2557 }
danghuutoan 0:f24ba3a89ec1 2558 #endif
danghuutoan 0:f24ba3a89ec1 2559 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 2560
danghuutoan 0:f24ba3a89ec1 2561 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2562 fp->flag = mode; /* File access mode */
danghuutoan 0:f24ba3a89ec1 2563 fp->err = 0; /* Clear error flag */
danghuutoan 0:f24ba3a89ec1 2564 fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
danghuutoan 0:f24ba3a89ec1 2565 fp->fsize = LD_DWORD(dir + DIR_FileSize); /* File size */
danghuutoan 0:f24ba3a89ec1 2566 fp->fptr = 0; /* File pointer */
danghuutoan 0:f24ba3a89ec1 2567 fp->dsect = 0;
danghuutoan 0:f24ba3a89ec1 2568 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 2569 fp->cltbl = 0; /* Normal seek mode */
danghuutoan 0:f24ba3a89ec1 2570 #endif
danghuutoan 0:f24ba3a89ec1 2571 fp->fs = dj.fs; /* Validate file object */
danghuutoan 0:f24ba3a89ec1 2572 fp->id = fp->fs->id;
danghuutoan 0:f24ba3a89ec1 2573 }
danghuutoan 0:f24ba3a89ec1 2574 }
danghuutoan 0:f24ba3a89ec1 2575
danghuutoan 0:f24ba3a89ec1 2576 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 2577 }
danghuutoan 0:f24ba3a89ec1 2578
danghuutoan 0:f24ba3a89ec1 2579
danghuutoan 0:f24ba3a89ec1 2580
danghuutoan 0:f24ba3a89ec1 2581
danghuutoan 0:f24ba3a89ec1 2582 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2583 /* Read File */
danghuutoan 0:f24ba3a89ec1 2584 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2585
danghuutoan 0:f24ba3a89ec1 2586 FRESULT f_read (
danghuutoan 0:f24ba3a89ec1 2587 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 2588 void* buff, /* Pointer to data buffer */
danghuutoan 0:f24ba3a89ec1 2589 UINT btr, /* Number of bytes to read */
danghuutoan 0:f24ba3a89ec1 2590 UINT* br /* Pointer to number of bytes read */
danghuutoan 0:f24ba3a89ec1 2591 )
danghuutoan 0:f24ba3a89ec1 2592 {
danghuutoan 0:f24ba3a89ec1 2593 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2594 DWORD clst, sect, remain;
danghuutoan 0:f24ba3a89ec1 2595 UINT rcnt, cc;
danghuutoan 0:f24ba3a89ec1 2596 BYTE csect, *rbuff = (BYTE*)buff;
danghuutoan 0:f24ba3a89ec1 2597
danghuutoan 0:f24ba3a89ec1 2598
danghuutoan 0:f24ba3a89ec1 2599 *br = 0; /* Clear read byte counter */
danghuutoan 0:f24ba3a89ec1 2600
danghuutoan 0:f24ba3a89ec1 2601 res = validate(fp); /* Check validity */
danghuutoan 0:f24ba3a89ec1 2602 if (res != FR_OK) LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 2603 if (fp->err) /* Check error */
danghuutoan 0:f24ba3a89ec1 2604 LEAVE_FF(fp->fs, (FRESULT)fp->err);
danghuutoan 0:f24ba3a89ec1 2605 if (!(fp->flag & FA_READ)) /* Check access mode */
danghuutoan 0:f24ba3a89ec1 2606 LEAVE_FF(fp->fs, FR_DENIED);
danghuutoan 0:f24ba3a89ec1 2607 remain = fp->fsize - fp->fptr;
danghuutoan 0:f24ba3a89ec1 2608 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
danghuutoan 0:f24ba3a89ec1 2609
danghuutoan 0:f24ba3a89ec1 2610 for ( ; btr; /* Repeat until all data read */
danghuutoan 0:f24ba3a89ec1 2611 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
danghuutoan 0:f24ba3a89ec1 2612 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
danghuutoan 0:f24ba3a89ec1 2613 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
danghuutoan 0:f24ba3a89ec1 2614 if (!csect) { /* On the cluster boundary? */
danghuutoan 0:f24ba3a89ec1 2615 if (fp->fptr == 0) { /* On the top of the file? */
danghuutoan 0:f24ba3a89ec1 2616 clst = fp->sclust; /* Follow from the origin */
danghuutoan 0:f24ba3a89ec1 2617 } else { /* Middle or end of the file */
danghuutoan 0:f24ba3a89ec1 2618 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 2619 if (fp->cltbl)
danghuutoan 0:f24ba3a89ec1 2620 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
danghuutoan 0:f24ba3a89ec1 2621 else
danghuutoan 0:f24ba3a89ec1 2622 #endif
danghuutoan 0:f24ba3a89ec1 2623 clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
danghuutoan 0:f24ba3a89ec1 2624 }
danghuutoan 0:f24ba3a89ec1 2625 if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 2626 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2627 fp->clust = clst; /* Update current cluster */
danghuutoan 0:f24ba3a89ec1 2628 }
danghuutoan 0:f24ba3a89ec1 2629 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
danghuutoan 0:f24ba3a89ec1 2630 if (!sect) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 2631 sect += csect;
danghuutoan 0:f24ba3a89ec1 2632 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
danghuutoan 0:f24ba3a89ec1 2633 if (cc) { /* Read maximum contiguous sectors directly */
danghuutoan 0:f24ba3a89ec1 2634 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
danghuutoan 0:f24ba3a89ec1 2635 cc = fp->fs->csize - csect;
danghuutoan 0:f24ba3a89ec1 2636 if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2637 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2638 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
danghuutoan 0:f24ba3a89ec1 2639 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2640 if (fp->fs->wflag && fp->fs->winsect - sect < cc)
danghuutoan 0:f24ba3a89ec1 2641 mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
danghuutoan 0:f24ba3a89ec1 2642 #else
danghuutoan 0:f24ba3a89ec1 2643 if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
danghuutoan 0:f24ba3a89ec1 2644 mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
danghuutoan 0:f24ba3a89ec1 2645 #endif
danghuutoan 0:f24ba3a89ec1 2646 #endif
danghuutoan 0:f24ba3a89ec1 2647 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
danghuutoan 0:f24ba3a89ec1 2648 continue;
danghuutoan 0:f24ba3a89ec1 2649 }
danghuutoan 0:f24ba3a89ec1 2650 #if !_FS_TINY
danghuutoan 0:f24ba3a89ec1 2651 if (fp->dsect != sect) { /* Load data sector if not in cache */
danghuutoan 0:f24ba3a89ec1 2652 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2653 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
danghuutoan 0:f24ba3a89ec1 2654 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2655 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2656 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 2657 }
danghuutoan 0:f24ba3a89ec1 2658 #endif
danghuutoan 0:f24ba3a89ec1 2659 if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
danghuutoan 0:f24ba3a89ec1 2660 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2661 }
danghuutoan 0:f24ba3a89ec1 2662 #endif
danghuutoan 0:f24ba3a89ec1 2663 fp->dsect = sect;
danghuutoan 0:f24ba3a89ec1 2664 }
danghuutoan 0:f24ba3a89ec1 2665 rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
danghuutoan 0:f24ba3a89ec1 2666 if (rcnt > btr) rcnt = btr;
danghuutoan 0:f24ba3a89ec1 2667 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2668 if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
danghuutoan 0:f24ba3a89ec1 2669 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2670 mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
danghuutoan 0:f24ba3a89ec1 2671 #else
danghuutoan 0:f24ba3a89ec1 2672 mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
danghuutoan 0:f24ba3a89ec1 2673 #endif
danghuutoan 0:f24ba3a89ec1 2674 }
danghuutoan 0:f24ba3a89ec1 2675
danghuutoan 0:f24ba3a89ec1 2676 LEAVE_FF(fp->fs, FR_OK);
danghuutoan 0:f24ba3a89ec1 2677 }
danghuutoan 0:f24ba3a89ec1 2678
danghuutoan 0:f24ba3a89ec1 2679
danghuutoan 0:f24ba3a89ec1 2680
danghuutoan 0:f24ba3a89ec1 2681
danghuutoan 0:f24ba3a89ec1 2682 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2683 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2684 /* Write File */
danghuutoan 0:f24ba3a89ec1 2685 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2686
danghuutoan 0:f24ba3a89ec1 2687 FRESULT f_write (
danghuutoan 0:f24ba3a89ec1 2688 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 2689 const void *buff, /* Pointer to the data to be written */
danghuutoan 0:f24ba3a89ec1 2690 UINT btw, /* Number of bytes to write */
danghuutoan 0:f24ba3a89ec1 2691 UINT* bw /* Pointer to number of bytes written */
danghuutoan 0:f24ba3a89ec1 2692 )
danghuutoan 0:f24ba3a89ec1 2693 {
danghuutoan 0:f24ba3a89ec1 2694 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2695 DWORD clst, sect;
danghuutoan 0:f24ba3a89ec1 2696 UINT wcnt, cc;
danghuutoan 0:f24ba3a89ec1 2697 const BYTE *wbuff = (const BYTE*)buff;
danghuutoan 0:f24ba3a89ec1 2698 BYTE csect;
danghuutoan 0:f24ba3a89ec1 2699
danghuutoan 0:f24ba3a89ec1 2700
danghuutoan 0:f24ba3a89ec1 2701 *bw = 0; /* Clear write byte counter */
danghuutoan 0:f24ba3a89ec1 2702
danghuutoan 0:f24ba3a89ec1 2703 res = validate(fp); /* Check validity */
danghuutoan 0:f24ba3a89ec1 2704 if (res != FR_OK) LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 2705 if (fp->err) /* Check error */
danghuutoan 0:f24ba3a89ec1 2706 LEAVE_FF(fp->fs, (FRESULT)fp->err);
danghuutoan 0:f24ba3a89ec1 2707 if (!(fp->flag & FA_WRITE)) /* Check access mode */
danghuutoan 0:f24ba3a89ec1 2708 LEAVE_FF(fp->fs, FR_DENIED);
danghuutoan 0:f24ba3a89ec1 2709 if (fp->fptr + btw < fp->fptr) btw = 0; /* File size cannot reach 4GB */
danghuutoan 0:f24ba3a89ec1 2710
danghuutoan 0:f24ba3a89ec1 2711 for ( ; btw; /* Repeat until all data written */
danghuutoan 0:f24ba3a89ec1 2712 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
danghuutoan 0:f24ba3a89ec1 2713 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
danghuutoan 0:f24ba3a89ec1 2714 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
danghuutoan 0:f24ba3a89ec1 2715 if (!csect) { /* On the cluster boundary? */
danghuutoan 0:f24ba3a89ec1 2716 if (fp->fptr == 0) { /* On the top of the file? */
danghuutoan 0:f24ba3a89ec1 2717 clst = fp->sclust; /* Follow from the origin */
danghuutoan 0:f24ba3a89ec1 2718 if (clst == 0) /* When no cluster is allocated, */
danghuutoan 0:f24ba3a89ec1 2719 clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
danghuutoan 0:f24ba3a89ec1 2720 } else { /* Middle or end of the file */
danghuutoan 0:f24ba3a89ec1 2721 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 2722 if (fp->cltbl)
danghuutoan 0:f24ba3a89ec1 2723 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
danghuutoan 0:f24ba3a89ec1 2724 else
danghuutoan 0:f24ba3a89ec1 2725 #endif
danghuutoan 0:f24ba3a89ec1 2726 clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
danghuutoan 0:f24ba3a89ec1 2727 }
danghuutoan 0:f24ba3a89ec1 2728 if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
danghuutoan 0:f24ba3a89ec1 2729 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 2730 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2731 fp->clust = clst; /* Update current cluster */
danghuutoan 0:f24ba3a89ec1 2732 if (fp->sclust == 0) fp->sclust = clst; /* Set start cluster if the first write */
danghuutoan 0:f24ba3a89ec1 2733 }
danghuutoan 0:f24ba3a89ec1 2734 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2735 if (fp->fs->winsect == fp->dsect && sync_window(fp->fs)) /* Write-back sector cache */
danghuutoan 0:f24ba3a89ec1 2736 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2737 #else
danghuutoan 0:f24ba3a89ec1 2738 if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
danghuutoan 0:f24ba3a89ec1 2739 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2740 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2741 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 2742 }
danghuutoan 0:f24ba3a89ec1 2743 #endif
danghuutoan 0:f24ba3a89ec1 2744 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
danghuutoan 0:f24ba3a89ec1 2745 if (!sect) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 2746 sect += csect;
danghuutoan 0:f24ba3a89ec1 2747 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
danghuutoan 0:f24ba3a89ec1 2748 if (cc) { /* Write maximum contiguous sectors directly */
danghuutoan 0:f24ba3a89ec1 2749 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
danghuutoan 0:f24ba3a89ec1 2750 cc = fp->fs->csize - csect;
danghuutoan 0:f24ba3a89ec1 2751 if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2752 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2753 #if _FS_MINIMIZE <= 2
danghuutoan 0:f24ba3a89ec1 2754 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2755 if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
danghuutoan 0:f24ba3a89ec1 2756 mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
danghuutoan 0:f24ba3a89ec1 2757 fp->fs->wflag = 0;
danghuutoan 0:f24ba3a89ec1 2758 }
danghuutoan 0:f24ba3a89ec1 2759 #else
danghuutoan 0:f24ba3a89ec1 2760 if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
danghuutoan 0:f24ba3a89ec1 2761 mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
danghuutoan 0:f24ba3a89ec1 2762 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 2763 }
danghuutoan 0:f24ba3a89ec1 2764 #endif
danghuutoan 0:f24ba3a89ec1 2765 #endif
danghuutoan 0:f24ba3a89ec1 2766 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
danghuutoan 0:f24ba3a89ec1 2767 continue;
danghuutoan 0:f24ba3a89ec1 2768 }
danghuutoan 0:f24ba3a89ec1 2769 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2770 if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
danghuutoan 0:f24ba3a89ec1 2771 if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2772 fp->fs->winsect = sect;
danghuutoan 0:f24ba3a89ec1 2773 }
danghuutoan 0:f24ba3a89ec1 2774 #else
danghuutoan 0:f24ba3a89ec1 2775 if (fp->dsect != sect) { /* Fill sector cache with file data */
danghuutoan 0:f24ba3a89ec1 2776 if (fp->fptr < fp->fsize &&
danghuutoan 0:f24ba3a89ec1 2777 disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2778 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2779 }
danghuutoan 0:f24ba3a89ec1 2780 #endif
danghuutoan 0:f24ba3a89ec1 2781 fp->dsect = sect;
danghuutoan 0:f24ba3a89ec1 2782 }
danghuutoan 0:f24ba3a89ec1 2783 wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
danghuutoan 0:f24ba3a89ec1 2784 if (wcnt > btw) wcnt = btw;
danghuutoan 0:f24ba3a89ec1 2785 #if _FS_TINY
danghuutoan 0:f24ba3a89ec1 2786 if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
danghuutoan 0:f24ba3a89ec1 2787 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2788 mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
danghuutoan 0:f24ba3a89ec1 2789 fp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 2790 #else
danghuutoan 0:f24ba3a89ec1 2791 mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
danghuutoan 0:f24ba3a89ec1 2792 fp->flag |= FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 2793 #endif
danghuutoan 0:f24ba3a89ec1 2794 }
danghuutoan 0:f24ba3a89ec1 2795
danghuutoan 0:f24ba3a89ec1 2796 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
danghuutoan 0:f24ba3a89ec1 2797 fp->flag |= FA__WRITTEN; /* Set file change flag */
danghuutoan 0:f24ba3a89ec1 2798
danghuutoan 0:f24ba3a89ec1 2799 LEAVE_FF(fp->fs, FR_OK);
danghuutoan 0:f24ba3a89ec1 2800 }
danghuutoan 0:f24ba3a89ec1 2801
danghuutoan 0:f24ba3a89ec1 2802
danghuutoan 0:f24ba3a89ec1 2803
danghuutoan 0:f24ba3a89ec1 2804
danghuutoan 0:f24ba3a89ec1 2805 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2806 /* Synchronize the File */
danghuutoan 0:f24ba3a89ec1 2807 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2808
danghuutoan 0:f24ba3a89ec1 2809 FRESULT f_sync (
danghuutoan 0:f24ba3a89ec1 2810 FIL* fp /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 2811 )
danghuutoan 0:f24ba3a89ec1 2812 {
danghuutoan 0:f24ba3a89ec1 2813 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2814 DWORD tm;
danghuutoan 0:f24ba3a89ec1 2815 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 2816
danghuutoan 0:f24ba3a89ec1 2817
danghuutoan 0:f24ba3a89ec1 2818 res = validate(fp); /* Check validity of the object */
danghuutoan 0:f24ba3a89ec1 2819 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2820 if (fp->flag & FA__WRITTEN) { /* Is there any change to the file? */
danghuutoan 0:f24ba3a89ec1 2821 #if !_FS_TINY
danghuutoan 0:f24ba3a89ec1 2822 if (fp->flag & FA__DIRTY) { /* Write-back cached data if needed */
danghuutoan 0:f24ba3a89ec1 2823 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 2824 LEAVE_FF(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 2825 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 2826 }
danghuutoan 0:f24ba3a89ec1 2827 #endif
danghuutoan 0:f24ba3a89ec1 2828 /* Update the directory entry */
danghuutoan 0:f24ba3a89ec1 2829 res = move_window(fp->fs, fp->dir_sect);
danghuutoan 0:f24ba3a89ec1 2830 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2831 dir = fp->dir_ptr;
danghuutoan 0:f24ba3a89ec1 2832 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
danghuutoan 0:f24ba3a89ec1 2833 ST_DWORD(dir + DIR_FileSize, fp->fsize); /* Update file size */
danghuutoan 0:f24ba3a89ec1 2834 st_clust(dir, fp->sclust); /* Update start cluster */
danghuutoan 0:f24ba3a89ec1 2835 tm = GET_FATTIME(); /* Update modified time */
danghuutoan 0:f24ba3a89ec1 2836 ST_DWORD(dir + DIR_WrtTime, tm);
danghuutoan 0:f24ba3a89ec1 2837 ST_WORD(dir + DIR_LstAccDate, 0);
danghuutoan 0:f24ba3a89ec1 2838 fp->flag &= ~FA__WRITTEN;
danghuutoan 0:f24ba3a89ec1 2839 fp->fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 2840 res = sync_fs(fp->fs);
danghuutoan 0:f24ba3a89ec1 2841 }
danghuutoan 0:f24ba3a89ec1 2842 }
danghuutoan 0:f24ba3a89ec1 2843 }
danghuutoan 0:f24ba3a89ec1 2844
danghuutoan 0:f24ba3a89ec1 2845 LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 2846 }
danghuutoan 0:f24ba3a89ec1 2847
danghuutoan 0:f24ba3a89ec1 2848 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 2849
danghuutoan 0:f24ba3a89ec1 2850
danghuutoan 0:f24ba3a89ec1 2851
danghuutoan 0:f24ba3a89ec1 2852
danghuutoan 0:f24ba3a89ec1 2853 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2854 /* Close File */
danghuutoan 0:f24ba3a89ec1 2855 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2856
danghuutoan 0:f24ba3a89ec1 2857 FRESULT f_close (
danghuutoan 0:f24ba3a89ec1 2858 FIL *fp /* Pointer to the file object to be closed */
danghuutoan 0:f24ba3a89ec1 2859 )
danghuutoan 0:f24ba3a89ec1 2860 {
danghuutoan 0:f24ba3a89ec1 2861 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2862
danghuutoan 0:f24ba3a89ec1 2863
danghuutoan 0:f24ba3a89ec1 2864 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 2865 res = f_sync(fp); /* Flush cached data */
danghuutoan 0:f24ba3a89ec1 2866 if (res == FR_OK)
danghuutoan 0:f24ba3a89ec1 2867 #endif
danghuutoan 0:f24ba3a89ec1 2868 {
danghuutoan 0:f24ba3a89ec1 2869 res = validate(fp); /* Lock volume */
danghuutoan 0:f24ba3a89ec1 2870 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2871 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 2872 FATFS *fs = fp->fs;
danghuutoan 0:f24ba3a89ec1 2873 #endif
danghuutoan 0:f24ba3a89ec1 2874 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 2875 res = dec_lock(fp->lockid); /* Decrement file open counter */
danghuutoan 0:f24ba3a89ec1 2876 if (res == FR_OK)
danghuutoan 0:f24ba3a89ec1 2877 #endif
danghuutoan 0:f24ba3a89ec1 2878 fp->fs = 0; /* Invalidate file object */
danghuutoan 0:f24ba3a89ec1 2879 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 2880 unlock_fs(fs, FR_OK); /* Unlock volume */
danghuutoan 0:f24ba3a89ec1 2881 #endif
danghuutoan 0:f24ba3a89ec1 2882 }
danghuutoan 0:f24ba3a89ec1 2883 }
danghuutoan 0:f24ba3a89ec1 2884 return res;
danghuutoan 0:f24ba3a89ec1 2885 }
danghuutoan 0:f24ba3a89ec1 2886
danghuutoan 0:f24ba3a89ec1 2887
danghuutoan 0:f24ba3a89ec1 2888
danghuutoan 0:f24ba3a89ec1 2889
danghuutoan 0:f24ba3a89ec1 2890 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2891 /* Change Current Directory or Current Drive, Get Current Directory */
danghuutoan 0:f24ba3a89ec1 2892 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 2893
danghuutoan 0:f24ba3a89ec1 2894 #if _FS_RPATH >= 1
danghuutoan 0:f24ba3a89ec1 2895 #if _VOLUMES >= 2
danghuutoan 0:f24ba3a89ec1 2896 FRESULT f_chdrive (
danghuutoan 0:f24ba3a89ec1 2897 const TCHAR* path /* Drive number */
danghuutoan 0:f24ba3a89ec1 2898 )
danghuutoan 0:f24ba3a89ec1 2899 {
danghuutoan 0:f24ba3a89ec1 2900 int vol;
danghuutoan 0:f24ba3a89ec1 2901
danghuutoan 0:f24ba3a89ec1 2902
danghuutoan 0:f24ba3a89ec1 2903 vol = get_ldnumber(&path);
danghuutoan 0:f24ba3a89ec1 2904 if (vol < 0) return FR_INVALID_DRIVE;
danghuutoan 0:f24ba3a89ec1 2905
danghuutoan 0:f24ba3a89ec1 2906 CurrVol = (BYTE)vol;
danghuutoan 0:f24ba3a89ec1 2907
danghuutoan 0:f24ba3a89ec1 2908 return FR_OK;
danghuutoan 0:f24ba3a89ec1 2909 }
danghuutoan 0:f24ba3a89ec1 2910 #endif
danghuutoan 0:f24ba3a89ec1 2911
danghuutoan 0:f24ba3a89ec1 2912
danghuutoan 0:f24ba3a89ec1 2913 FRESULT f_chdir (
danghuutoan 0:f24ba3a89ec1 2914 const TCHAR* path /* Pointer to the directory path */
danghuutoan 0:f24ba3a89ec1 2915 )
danghuutoan 0:f24ba3a89ec1 2916 {
danghuutoan 0:f24ba3a89ec1 2917 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2918 DIR dj;
danghuutoan 0:f24ba3a89ec1 2919 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 2920
danghuutoan 0:f24ba3a89ec1 2921
danghuutoan 0:f24ba3a89ec1 2922 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 2923 res = find_volume(&dj.fs, &path, 0);
danghuutoan 0:f24ba3a89ec1 2924 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2925 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 2926 res = follow_path(&dj, path); /* Follow the path */
danghuutoan 0:f24ba3a89ec1 2927 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 2928 if (res == FR_OK) { /* Follow completed */
danghuutoan 0:f24ba3a89ec1 2929 if (!dj.dir) {
danghuutoan 0:f24ba3a89ec1 2930 dj.fs->cdir = dj.sclust; /* Start directory itself */
danghuutoan 0:f24ba3a89ec1 2931 } else {
danghuutoan 0:f24ba3a89ec1 2932 if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
danghuutoan 0:f24ba3a89ec1 2933 dj.fs->cdir = ld_clust(dj.fs, dj.dir);
danghuutoan 0:f24ba3a89ec1 2934 else
danghuutoan 0:f24ba3a89ec1 2935 res = FR_NO_PATH; /* Reached but a file */
danghuutoan 0:f24ba3a89ec1 2936 }
danghuutoan 0:f24ba3a89ec1 2937 }
danghuutoan 0:f24ba3a89ec1 2938 if (res == FR_NO_FILE) res = FR_NO_PATH;
danghuutoan 0:f24ba3a89ec1 2939 }
danghuutoan 0:f24ba3a89ec1 2940
danghuutoan 0:f24ba3a89ec1 2941 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 2942 }
danghuutoan 0:f24ba3a89ec1 2943
danghuutoan 0:f24ba3a89ec1 2944
danghuutoan 0:f24ba3a89ec1 2945 #if _FS_RPATH >= 2
danghuutoan 0:f24ba3a89ec1 2946 FRESULT f_getcwd (
danghuutoan 0:f24ba3a89ec1 2947 TCHAR* buff, /* Pointer to the directory path */
danghuutoan 0:f24ba3a89ec1 2948 UINT len /* Size of path */
danghuutoan 0:f24ba3a89ec1 2949 )
danghuutoan 0:f24ba3a89ec1 2950 {
danghuutoan 0:f24ba3a89ec1 2951 FRESULT res;
danghuutoan 0:f24ba3a89ec1 2952 DIR dj;
danghuutoan 0:f24ba3a89ec1 2953 UINT i, n;
danghuutoan 0:f24ba3a89ec1 2954 DWORD ccl;
danghuutoan 0:f24ba3a89ec1 2955 TCHAR *tp;
danghuutoan 0:f24ba3a89ec1 2956 FILINFO fno;
danghuutoan 0:f24ba3a89ec1 2957 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 2958
danghuutoan 0:f24ba3a89ec1 2959
danghuutoan 0:f24ba3a89ec1 2960 *buff = 0;
danghuutoan 0:f24ba3a89ec1 2961 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 2962 res = find_volume(&dj.fs, (const TCHAR**)&buff, 0); /* Get current volume */
danghuutoan 0:f24ba3a89ec1 2963 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 2964 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 2965 i = len; /* Bottom of buffer (directory stack base) */
danghuutoan 0:f24ba3a89ec1 2966 dj.sclust = dj.fs->cdir; /* Start to follow upper directory from current directory */
danghuutoan 0:f24ba3a89ec1 2967 while ((ccl = dj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
danghuutoan 0:f24ba3a89ec1 2968 res = dir_sdi(&dj, 1); /* Get parent directory */
danghuutoan 0:f24ba3a89ec1 2969 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2970 res = dir_read(&dj, 0);
danghuutoan 0:f24ba3a89ec1 2971 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2972 dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent directory */
danghuutoan 0:f24ba3a89ec1 2973 res = dir_sdi(&dj, 0);
danghuutoan 0:f24ba3a89ec1 2974 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2975 do { /* Find the entry links to the child directory */
danghuutoan 0:f24ba3a89ec1 2976 res = dir_read(&dj, 0);
danghuutoan 0:f24ba3a89ec1 2977 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2978 if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
danghuutoan 0:f24ba3a89ec1 2979 res = dir_next(&dj, 0);
danghuutoan 0:f24ba3a89ec1 2980 } while (res == FR_OK);
danghuutoan 0:f24ba3a89ec1 2981 if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
danghuutoan 0:f24ba3a89ec1 2982 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 2983 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 2984 fno.lfname = buff;
danghuutoan 0:f24ba3a89ec1 2985 fno.lfsize = i;
danghuutoan 0:f24ba3a89ec1 2986 #endif
danghuutoan 0:f24ba3a89ec1 2987 get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
danghuutoan 0:f24ba3a89ec1 2988 tp = fno.fname;
danghuutoan 0:f24ba3a89ec1 2989 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 2990 if (*buff) tp = buff;
danghuutoan 0:f24ba3a89ec1 2991 #endif
danghuutoan 0:f24ba3a89ec1 2992 for (n = 0; tp[n]; n++) ;
danghuutoan 0:f24ba3a89ec1 2993 if (i < n + 3) {
danghuutoan 0:f24ba3a89ec1 2994 res = FR_NOT_ENOUGH_CORE; break;
danghuutoan 0:f24ba3a89ec1 2995 }
danghuutoan 0:f24ba3a89ec1 2996 while (n) buff[--i] = tp[--n];
danghuutoan 0:f24ba3a89ec1 2997 buff[--i] = '/';
danghuutoan 0:f24ba3a89ec1 2998 }
danghuutoan 0:f24ba3a89ec1 2999 tp = buff;
danghuutoan 0:f24ba3a89ec1 3000 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3001 #if _VOLUMES >= 2
danghuutoan 0:f24ba3a89ec1 3002 *tp++ = '0' + CurrVol; /* Put drive number */
danghuutoan 0:f24ba3a89ec1 3003 *tp++ = ':';
danghuutoan 0:f24ba3a89ec1 3004 #endif
danghuutoan 0:f24ba3a89ec1 3005 if (i == len) { /* Root-directory */
danghuutoan 0:f24ba3a89ec1 3006 *tp++ = '/';
danghuutoan 0:f24ba3a89ec1 3007 } else { /* Sub-directroy */
danghuutoan 0:f24ba3a89ec1 3008 do /* Add stacked path str */
danghuutoan 0:f24ba3a89ec1 3009 *tp++ = buff[i++];
danghuutoan 0:f24ba3a89ec1 3010 while (i < len);
danghuutoan 0:f24ba3a89ec1 3011 }
danghuutoan 0:f24ba3a89ec1 3012 }
danghuutoan 0:f24ba3a89ec1 3013 *tp = 0;
danghuutoan 0:f24ba3a89ec1 3014 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3015 }
danghuutoan 0:f24ba3a89ec1 3016
danghuutoan 0:f24ba3a89ec1 3017 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3018 }
danghuutoan 0:f24ba3a89ec1 3019 #endif /* _FS_RPATH >= 2 */
danghuutoan 0:f24ba3a89ec1 3020 #endif /* _FS_RPATH >= 1 */
danghuutoan 0:f24ba3a89ec1 3021
danghuutoan 0:f24ba3a89ec1 3022
danghuutoan 0:f24ba3a89ec1 3023
danghuutoan 0:f24ba3a89ec1 3024 #if _FS_MINIMIZE <= 2
danghuutoan 0:f24ba3a89ec1 3025 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3026 /* Seek File R/W Pointer */
danghuutoan 0:f24ba3a89ec1 3027 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3028
danghuutoan 0:f24ba3a89ec1 3029 FRESULT f_lseek (
danghuutoan 0:f24ba3a89ec1 3030 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 3031 DWORD ofs /* File pointer from top of file */
danghuutoan 0:f24ba3a89ec1 3032 )
danghuutoan 0:f24ba3a89ec1 3033 {
danghuutoan 0:f24ba3a89ec1 3034 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3035 DWORD clst, bcs, nsect, ifptr;
danghuutoan 0:f24ba3a89ec1 3036 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 3037 DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
danghuutoan 0:f24ba3a89ec1 3038 #endif
danghuutoan 0:f24ba3a89ec1 3039
danghuutoan 0:f24ba3a89ec1 3040
danghuutoan 0:f24ba3a89ec1 3041 res = validate(fp); /* Check validity of the object */
danghuutoan 0:f24ba3a89ec1 3042 if (res != FR_OK) LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 3043 if (fp->err) /* Check error */
danghuutoan 0:f24ba3a89ec1 3044 LEAVE_FF(fp->fs, (FRESULT)fp->err);
danghuutoan 0:f24ba3a89ec1 3045
danghuutoan 0:f24ba3a89ec1 3046 #if _USE_FASTSEEK
danghuutoan 0:f24ba3a89ec1 3047 if (fp->cltbl) { /* Fast seek */
danghuutoan 0:f24ba3a89ec1 3048 if (ofs == CREATE_LINKMAP) { /* Create CLMT */
danghuutoan 0:f24ba3a89ec1 3049 tbl = fp->cltbl;
danghuutoan 0:f24ba3a89ec1 3050 tlen = *tbl++; ulen = 2; /* Given table size and required table size */
danghuutoan 0:f24ba3a89ec1 3051 cl = fp->sclust; /* Top of the chain */
danghuutoan 0:f24ba3a89ec1 3052 if (cl) {
danghuutoan 0:f24ba3a89ec1 3053 do {
danghuutoan 0:f24ba3a89ec1 3054 /* Get a fragment */
danghuutoan 0:f24ba3a89ec1 3055 tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
danghuutoan 0:f24ba3a89ec1 3056 do {
danghuutoan 0:f24ba3a89ec1 3057 pcl = cl; ncl++;
danghuutoan 0:f24ba3a89ec1 3058 cl = get_fat(fp->fs, cl);
danghuutoan 0:f24ba3a89ec1 3059 if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 3060 if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3061 } while (cl == pcl + 1);
danghuutoan 0:f24ba3a89ec1 3062 if (ulen <= tlen) { /* Store the length and top of the fragment */
danghuutoan 0:f24ba3a89ec1 3063 *tbl++ = ncl; *tbl++ = tcl;
danghuutoan 0:f24ba3a89ec1 3064 }
danghuutoan 0:f24ba3a89ec1 3065 } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
danghuutoan 0:f24ba3a89ec1 3066 }
danghuutoan 0:f24ba3a89ec1 3067 *fp->cltbl = ulen; /* Number of items used */
danghuutoan 0:f24ba3a89ec1 3068 if (ulen <= tlen)
danghuutoan 0:f24ba3a89ec1 3069 *tbl = 0; /* Terminate table */
danghuutoan 0:f24ba3a89ec1 3070 else
danghuutoan 0:f24ba3a89ec1 3071 res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
danghuutoan 0:f24ba3a89ec1 3072
danghuutoan 0:f24ba3a89ec1 3073 } else { /* Fast seek */
danghuutoan 0:f24ba3a89ec1 3074 if (ofs > fp->fsize) /* Clip offset at the file size */
danghuutoan 0:f24ba3a89ec1 3075 ofs = fp->fsize;
danghuutoan 0:f24ba3a89ec1 3076 fp->fptr = ofs; /* Set file pointer */
danghuutoan 0:f24ba3a89ec1 3077 if (ofs) {
danghuutoan 0:f24ba3a89ec1 3078 fp->clust = clmt_clust(fp, ofs - 1);
danghuutoan 0:f24ba3a89ec1 3079 dsc = clust2sect(fp->fs, fp->clust);
danghuutoan 0:f24ba3a89ec1 3080 if (!dsc) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 3081 dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
danghuutoan 0:f24ba3a89ec1 3082 if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
danghuutoan 0:f24ba3a89ec1 3083 #if !_FS_TINY
danghuutoan 0:f24ba3a89ec1 3084 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3085 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
danghuutoan 0:f24ba3a89ec1 3086 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 3087 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3088 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 3089 }
danghuutoan 0:f24ba3a89ec1 3090 #endif
danghuutoan 0:f24ba3a89ec1 3091 if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
danghuutoan 0:f24ba3a89ec1 3092 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3093 #endif
danghuutoan 0:f24ba3a89ec1 3094 fp->dsect = dsc;
danghuutoan 0:f24ba3a89ec1 3095 }
danghuutoan 0:f24ba3a89ec1 3096 }
danghuutoan 0:f24ba3a89ec1 3097 }
danghuutoan 0:f24ba3a89ec1 3098 } else
danghuutoan 0:f24ba3a89ec1 3099 #endif
danghuutoan 0:f24ba3a89ec1 3100
danghuutoan 0:f24ba3a89ec1 3101 /* Normal Seek */
danghuutoan 0:f24ba3a89ec1 3102 {
danghuutoan 0:f24ba3a89ec1 3103 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
danghuutoan 0:f24ba3a89ec1 3104 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3105 && !(fp->flag & FA_WRITE)
danghuutoan 0:f24ba3a89ec1 3106 #endif
danghuutoan 0:f24ba3a89ec1 3107 ) ofs = fp->fsize;
danghuutoan 0:f24ba3a89ec1 3108
danghuutoan 0:f24ba3a89ec1 3109 ifptr = fp->fptr;
danghuutoan 0:f24ba3a89ec1 3110 fp->fptr = nsect = 0;
danghuutoan 0:f24ba3a89ec1 3111 if (ofs) {
danghuutoan 0:f24ba3a89ec1 3112 bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
danghuutoan 0:f24ba3a89ec1 3113 if (ifptr > 0 &&
danghuutoan 0:f24ba3a89ec1 3114 (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
danghuutoan 0:f24ba3a89ec1 3115 fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
danghuutoan 0:f24ba3a89ec1 3116 ofs -= fp->fptr;
danghuutoan 0:f24ba3a89ec1 3117 clst = fp->clust;
danghuutoan 0:f24ba3a89ec1 3118 } else { /* When seek to back cluster, */
danghuutoan 0:f24ba3a89ec1 3119 clst = fp->sclust; /* start from the first cluster */
danghuutoan 0:f24ba3a89ec1 3120 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3121 if (clst == 0) { /* If no cluster chain, create a new chain */
danghuutoan 0:f24ba3a89ec1 3122 clst = create_chain(fp->fs, 0);
danghuutoan 0:f24ba3a89ec1 3123 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 3124 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3125 fp->sclust = clst;
danghuutoan 0:f24ba3a89ec1 3126 }
danghuutoan 0:f24ba3a89ec1 3127 #endif
danghuutoan 0:f24ba3a89ec1 3128 fp->clust = clst;
danghuutoan 0:f24ba3a89ec1 3129 }
danghuutoan 0:f24ba3a89ec1 3130 if (clst != 0) {
danghuutoan 0:f24ba3a89ec1 3131 while (ofs > bcs) { /* Cluster following loop */
danghuutoan 0:f24ba3a89ec1 3132 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3133 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
danghuutoan 0:f24ba3a89ec1 3134 clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
danghuutoan 0:f24ba3a89ec1 3135 if (clst == 0) { /* When disk gets full, clip file size */
danghuutoan 0:f24ba3a89ec1 3136 ofs = bcs; break;
danghuutoan 0:f24ba3a89ec1 3137 }
danghuutoan 0:f24ba3a89ec1 3138 } else
danghuutoan 0:f24ba3a89ec1 3139 #endif
danghuutoan 0:f24ba3a89ec1 3140 clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
danghuutoan 0:f24ba3a89ec1 3141 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3142 if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 3143 fp->clust = clst;
danghuutoan 0:f24ba3a89ec1 3144 fp->fptr += bcs;
danghuutoan 0:f24ba3a89ec1 3145 ofs -= bcs;
danghuutoan 0:f24ba3a89ec1 3146 }
danghuutoan 0:f24ba3a89ec1 3147 fp->fptr += ofs;
danghuutoan 0:f24ba3a89ec1 3148 if (ofs % SS(fp->fs)) {
danghuutoan 0:f24ba3a89ec1 3149 nsect = clust2sect(fp->fs, clst); /* Current sector */
danghuutoan 0:f24ba3a89ec1 3150 if (!nsect) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 3151 nsect += ofs / SS(fp->fs);
danghuutoan 0:f24ba3a89ec1 3152 }
danghuutoan 0:f24ba3a89ec1 3153 }
danghuutoan 0:f24ba3a89ec1 3154 }
danghuutoan 0:f24ba3a89ec1 3155 if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
danghuutoan 0:f24ba3a89ec1 3156 #if !_FS_TINY
danghuutoan 0:f24ba3a89ec1 3157 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3158 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
danghuutoan 0:f24ba3a89ec1 3159 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 3160 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3161 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 3162 }
danghuutoan 0:f24ba3a89ec1 3163 #endif
danghuutoan 0:f24ba3a89ec1 3164 if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
danghuutoan 0:f24ba3a89ec1 3165 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 3166 #endif
danghuutoan 0:f24ba3a89ec1 3167 fp->dsect = nsect;
danghuutoan 0:f24ba3a89ec1 3168 }
danghuutoan 0:f24ba3a89ec1 3169 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3170 if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
danghuutoan 0:f24ba3a89ec1 3171 fp->fsize = fp->fptr;
danghuutoan 0:f24ba3a89ec1 3172 fp->flag |= FA__WRITTEN;
danghuutoan 0:f24ba3a89ec1 3173 }
danghuutoan 0:f24ba3a89ec1 3174 #endif
danghuutoan 0:f24ba3a89ec1 3175 }
danghuutoan 0:f24ba3a89ec1 3176
danghuutoan 0:f24ba3a89ec1 3177 LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 3178 }
danghuutoan 0:f24ba3a89ec1 3179
danghuutoan 0:f24ba3a89ec1 3180
danghuutoan 0:f24ba3a89ec1 3181
danghuutoan 0:f24ba3a89ec1 3182 #if _FS_MINIMIZE <= 1
danghuutoan 0:f24ba3a89ec1 3183 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3184 /* Create a Directory Object */
danghuutoan 0:f24ba3a89ec1 3185 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3186
danghuutoan 0:f24ba3a89ec1 3187 FRESULT f_opendir (
danghuutoan 0:f24ba3a89ec1 3188 DIR* dp, /* Pointer to directory object to create */
danghuutoan 0:f24ba3a89ec1 3189 const TCHAR* path /* Pointer to the directory path */
danghuutoan 0:f24ba3a89ec1 3190 )
danghuutoan 0:f24ba3a89ec1 3191 {
danghuutoan 0:f24ba3a89ec1 3192 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3193 FATFS* fs;
danghuutoan 0:f24ba3a89ec1 3194 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3195
danghuutoan 0:f24ba3a89ec1 3196
danghuutoan 0:f24ba3a89ec1 3197 if (!dp) return FR_INVALID_OBJECT;
danghuutoan 0:f24ba3a89ec1 3198
danghuutoan 0:f24ba3a89ec1 3199 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3200 res = find_volume(&fs, &path, 0);
danghuutoan 0:f24ba3a89ec1 3201 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3202 dp->fs = fs;
danghuutoan 0:f24ba3a89ec1 3203 INIT_BUF(*dp);
danghuutoan 0:f24ba3a89ec1 3204 res = follow_path(dp, path); /* Follow the path to the directory */
danghuutoan 0:f24ba3a89ec1 3205 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3206 if (res == FR_OK) { /* Follow completed */
danghuutoan 0:f24ba3a89ec1 3207 if (dp->dir) { /* It is not the origin directory itself */
danghuutoan 0:f24ba3a89ec1 3208 if (dp->dir[DIR_Attr] & AM_DIR) /* The object is a sub directory */
danghuutoan 0:f24ba3a89ec1 3209 dp->sclust = ld_clust(fs, dp->dir);
danghuutoan 0:f24ba3a89ec1 3210 else /* The object is a file */
danghuutoan 0:f24ba3a89ec1 3211 res = FR_NO_PATH;
danghuutoan 0:f24ba3a89ec1 3212 }
danghuutoan 0:f24ba3a89ec1 3213 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3214 dp->id = fs->id;
danghuutoan 0:f24ba3a89ec1 3215 res = dir_sdi(dp, 0); /* Rewind directory */
danghuutoan 0:f24ba3a89ec1 3216 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 3217 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3218 if (dp->sclust) {
danghuutoan 0:f24ba3a89ec1 3219 dp->lockid = inc_lock(dp, 0); /* Lock the sub directory */
danghuutoan 0:f24ba3a89ec1 3220 if (!dp->lockid)
danghuutoan 0:f24ba3a89ec1 3221 res = FR_TOO_MANY_OPEN_FILES;
danghuutoan 0:f24ba3a89ec1 3222 } else {
danghuutoan 0:f24ba3a89ec1 3223 dp->lockid = 0; /* Root directory need not to be locked */
danghuutoan 0:f24ba3a89ec1 3224 }
danghuutoan 0:f24ba3a89ec1 3225 }
danghuutoan 0:f24ba3a89ec1 3226 #endif
danghuutoan 0:f24ba3a89ec1 3227 }
danghuutoan 0:f24ba3a89ec1 3228 }
danghuutoan 0:f24ba3a89ec1 3229 if (res == FR_NO_FILE) res = FR_NO_PATH;
danghuutoan 0:f24ba3a89ec1 3230 }
danghuutoan 0:f24ba3a89ec1 3231 if (res != FR_OK) dp->fs = 0; /* Invalidate the directory object if function faild */
danghuutoan 0:f24ba3a89ec1 3232
danghuutoan 0:f24ba3a89ec1 3233 LEAVE_FF(fs, res);
danghuutoan 0:f24ba3a89ec1 3234 }
danghuutoan 0:f24ba3a89ec1 3235
danghuutoan 0:f24ba3a89ec1 3236
danghuutoan 0:f24ba3a89ec1 3237
danghuutoan 0:f24ba3a89ec1 3238
danghuutoan 0:f24ba3a89ec1 3239 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3240 /* Close Directory */
danghuutoan 0:f24ba3a89ec1 3241 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3242
danghuutoan 0:f24ba3a89ec1 3243 FRESULT f_closedir (
danghuutoan 0:f24ba3a89ec1 3244 DIR *dp /* Pointer to the directory object to be closed */
danghuutoan 0:f24ba3a89ec1 3245 )
danghuutoan 0:f24ba3a89ec1 3246 {
danghuutoan 0:f24ba3a89ec1 3247 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3248
danghuutoan 0:f24ba3a89ec1 3249
danghuutoan 0:f24ba3a89ec1 3250 res = validate(dp);
danghuutoan 0:f24ba3a89ec1 3251 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3252 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 3253 FATFS *fs = dp->fs;
danghuutoan 0:f24ba3a89ec1 3254 #endif
danghuutoan 0:f24ba3a89ec1 3255 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 3256 if (dp->lockid) /* Decrement sub-directory open counter */
danghuutoan 0:f24ba3a89ec1 3257 res = dec_lock(dp->lockid);
danghuutoan 0:f24ba3a89ec1 3258 if (res == FR_OK)
danghuutoan 0:f24ba3a89ec1 3259 #endif
danghuutoan 0:f24ba3a89ec1 3260 dp->fs = 0; /* Invalidate directory object */
danghuutoan 0:f24ba3a89ec1 3261 #if _FS_REENTRANT
danghuutoan 0:f24ba3a89ec1 3262 unlock_fs(fs, FR_OK); /* Unlock volume */
danghuutoan 0:f24ba3a89ec1 3263 #endif
danghuutoan 0:f24ba3a89ec1 3264 }
danghuutoan 0:f24ba3a89ec1 3265 return res;
danghuutoan 0:f24ba3a89ec1 3266 }
danghuutoan 0:f24ba3a89ec1 3267
danghuutoan 0:f24ba3a89ec1 3268
danghuutoan 0:f24ba3a89ec1 3269
danghuutoan 0:f24ba3a89ec1 3270
danghuutoan 0:f24ba3a89ec1 3271 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3272 /* Read Directory Entries in Sequence */
danghuutoan 0:f24ba3a89ec1 3273 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3274
danghuutoan 0:f24ba3a89ec1 3275 FRESULT f_readdir (
danghuutoan 0:f24ba3a89ec1 3276 DIR* dp, /* Pointer to the open directory object */
danghuutoan 0:f24ba3a89ec1 3277 FILINFO* fno /* Pointer to file information to return */
danghuutoan 0:f24ba3a89ec1 3278 )
danghuutoan 0:f24ba3a89ec1 3279 {
danghuutoan 0:f24ba3a89ec1 3280 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3281 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3282
danghuutoan 0:f24ba3a89ec1 3283
danghuutoan 0:f24ba3a89ec1 3284 res = validate(dp); /* Check validity of the object */
danghuutoan 0:f24ba3a89ec1 3285 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3286 if (!fno) {
danghuutoan 0:f24ba3a89ec1 3287 res = dir_sdi(dp, 0); /* Rewind the directory object */
danghuutoan 0:f24ba3a89ec1 3288 } else {
danghuutoan 0:f24ba3a89ec1 3289 INIT_BUF(*dp);
danghuutoan 0:f24ba3a89ec1 3290 res = dir_read(dp, 0); /* Read an item */
danghuutoan 0:f24ba3a89ec1 3291 if (res == FR_NO_FILE) { /* Reached end of directory */
danghuutoan 0:f24ba3a89ec1 3292 dp->sect = 0;
danghuutoan 0:f24ba3a89ec1 3293 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3294 }
danghuutoan 0:f24ba3a89ec1 3295 if (res == FR_OK) { /* A valid entry is found */
danghuutoan 0:f24ba3a89ec1 3296 get_fileinfo(dp, fno); /* Get the object information */
danghuutoan 0:f24ba3a89ec1 3297 res = dir_next(dp, 0); /* Increment index for next */
danghuutoan 0:f24ba3a89ec1 3298 if (res == FR_NO_FILE) {
danghuutoan 0:f24ba3a89ec1 3299 dp->sect = 0;
danghuutoan 0:f24ba3a89ec1 3300 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3301 }
danghuutoan 0:f24ba3a89ec1 3302 }
danghuutoan 0:f24ba3a89ec1 3303 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3304 }
danghuutoan 0:f24ba3a89ec1 3305 }
danghuutoan 0:f24ba3a89ec1 3306
danghuutoan 0:f24ba3a89ec1 3307 LEAVE_FF(dp->fs, res);
danghuutoan 0:f24ba3a89ec1 3308 }
danghuutoan 0:f24ba3a89ec1 3309
danghuutoan 0:f24ba3a89ec1 3310
danghuutoan 0:f24ba3a89ec1 3311
danghuutoan 0:f24ba3a89ec1 3312 #if _USE_FIND
danghuutoan 0:f24ba3a89ec1 3313 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3314 /* Find next file */
danghuutoan 0:f24ba3a89ec1 3315 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3316
danghuutoan 0:f24ba3a89ec1 3317 FRESULT f_findnext (
danghuutoan 0:f24ba3a89ec1 3318 DIR* dp, /* Pointer to the open directory object */
danghuutoan 0:f24ba3a89ec1 3319 FILINFO* fno /* Pointer to the file information structure */
danghuutoan 0:f24ba3a89ec1 3320 )
danghuutoan 0:f24ba3a89ec1 3321 {
danghuutoan 0:f24ba3a89ec1 3322 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3323
danghuutoan 0:f24ba3a89ec1 3324
danghuutoan 0:f24ba3a89ec1 3325 for (;;) {
danghuutoan 0:f24ba3a89ec1 3326 res = f_readdir(dp, fno); /* Get a directory item */
danghuutoan 0:f24ba3a89ec1 3327 if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
danghuutoan 0:f24ba3a89ec1 3328 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 3329 if (fno->lfname && pattern_matching(dp->pat, fno->lfname, 0, 0)) break; /* Test for LFN if exist */
danghuutoan 0:f24ba3a89ec1 3330 #endif
danghuutoan 0:f24ba3a89ec1 3331 if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for SFN */
danghuutoan 0:f24ba3a89ec1 3332 }
danghuutoan 0:f24ba3a89ec1 3333 return res;
danghuutoan 0:f24ba3a89ec1 3334
danghuutoan 0:f24ba3a89ec1 3335 }
danghuutoan 0:f24ba3a89ec1 3336
danghuutoan 0:f24ba3a89ec1 3337
danghuutoan 0:f24ba3a89ec1 3338
danghuutoan 0:f24ba3a89ec1 3339 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3340 /* Find first file */
danghuutoan 0:f24ba3a89ec1 3341 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3342
danghuutoan 0:f24ba3a89ec1 3343 FRESULT f_findfirst (
danghuutoan 0:f24ba3a89ec1 3344 DIR* dp, /* Pointer to the blank directory object */
danghuutoan 0:f24ba3a89ec1 3345 FILINFO* fno, /* Pointer to the file information structure */
danghuutoan 0:f24ba3a89ec1 3346 const TCHAR* path, /* Pointer to the directory to open */
danghuutoan 0:f24ba3a89ec1 3347 const TCHAR* pattern /* Pointer to the matching pattern */
danghuutoan 0:f24ba3a89ec1 3348 )
danghuutoan 0:f24ba3a89ec1 3349 {
danghuutoan 0:f24ba3a89ec1 3350 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3351
danghuutoan 0:f24ba3a89ec1 3352
danghuutoan 0:f24ba3a89ec1 3353 dp->pat = pattern; /* Save pointer to pattern string */
danghuutoan 0:f24ba3a89ec1 3354 res = f_opendir(dp, path); /* Open the target directory */
danghuutoan 0:f24ba3a89ec1 3355 if (res == FR_OK)
danghuutoan 0:f24ba3a89ec1 3356 res = f_findnext(dp, fno); /* Find the first item */
danghuutoan 0:f24ba3a89ec1 3357 return res;
danghuutoan 0:f24ba3a89ec1 3358 }
danghuutoan 0:f24ba3a89ec1 3359
danghuutoan 0:f24ba3a89ec1 3360 #endif /* _USE_FIND */
danghuutoan 0:f24ba3a89ec1 3361
danghuutoan 0:f24ba3a89ec1 3362
danghuutoan 0:f24ba3a89ec1 3363
danghuutoan 0:f24ba3a89ec1 3364 #if _FS_MINIMIZE == 0
danghuutoan 0:f24ba3a89ec1 3365 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3366 /* Get File Status */
danghuutoan 0:f24ba3a89ec1 3367 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3368
danghuutoan 0:f24ba3a89ec1 3369 FRESULT f_stat (
danghuutoan 0:f24ba3a89ec1 3370 const TCHAR* path, /* Pointer to the file path */
danghuutoan 0:f24ba3a89ec1 3371 FILINFO* fno /* Pointer to file information to return */
danghuutoan 0:f24ba3a89ec1 3372 )
danghuutoan 0:f24ba3a89ec1 3373 {
danghuutoan 0:f24ba3a89ec1 3374 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3375 DIR dj;
danghuutoan 0:f24ba3a89ec1 3376 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3377
danghuutoan 0:f24ba3a89ec1 3378
danghuutoan 0:f24ba3a89ec1 3379 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3380 res = find_volume(&dj.fs, &path, 0);
danghuutoan 0:f24ba3a89ec1 3381 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3382 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 3383 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 3384 if (res == FR_OK) { /* Follow completed */
danghuutoan 0:f24ba3a89ec1 3385 if (dj.dir) { /* Found an object */
danghuutoan 0:f24ba3a89ec1 3386 if (fno) get_fileinfo(&dj, fno);
danghuutoan 0:f24ba3a89ec1 3387 } else { /* It is root directory */
danghuutoan 0:f24ba3a89ec1 3388 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3389 }
danghuutoan 0:f24ba3a89ec1 3390 }
danghuutoan 0:f24ba3a89ec1 3391 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3392 }
danghuutoan 0:f24ba3a89ec1 3393
danghuutoan 0:f24ba3a89ec1 3394 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3395 }
danghuutoan 0:f24ba3a89ec1 3396
danghuutoan 0:f24ba3a89ec1 3397
danghuutoan 0:f24ba3a89ec1 3398
danghuutoan 0:f24ba3a89ec1 3399 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3400 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3401 /* Get Number of Free Clusters */
danghuutoan 0:f24ba3a89ec1 3402 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3403
danghuutoan 0:f24ba3a89ec1 3404 FRESULT f_getfree (
danghuutoan 0:f24ba3a89ec1 3405 const TCHAR* path, /* Path name of the logical drive number */
danghuutoan 0:f24ba3a89ec1 3406 DWORD* nclst, /* Pointer to a variable to return number of free clusters */
danghuutoan 0:f24ba3a89ec1 3407 FATFS** fatfs /* Pointer to return pointer to corresponding file system object */
danghuutoan 0:f24ba3a89ec1 3408 )
danghuutoan 0:f24ba3a89ec1 3409 {
danghuutoan 0:f24ba3a89ec1 3410 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3411 FATFS *fs;
danghuutoan 0:f24ba3a89ec1 3412 DWORD nfree, clst, sect, stat;
danghuutoan 0:f24ba3a89ec1 3413 UINT i;
danghuutoan 0:f24ba3a89ec1 3414 BYTE fat, *p;
danghuutoan 0:f24ba3a89ec1 3415
danghuutoan 0:f24ba3a89ec1 3416
danghuutoan 0:f24ba3a89ec1 3417 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3418 res = find_volume(fatfs, &path, 0);
danghuutoan 0:f24ba3a89ec1 3419 fs = *fatfs;
danghuutoan 0:f24ba3a89ec1 3420 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3421 /* If free_clust is valid, return it without full cluster scan */
danghuutoan 0:f24ba3a89ec1 3422 if (fs->free_clust <= fs->n_fatent - 2) {
danghuutoan 0:f24ba3a89ec1 3423 *nclst = fs->free_clust;
danghuutoan 0:f24ba3a89ec1 3424 } else {
danghuutoan 0:f24ba3a89ec1 3425 /* Get number of free clusters */
danghuutoan 0:f24ba3a89ec1 3426 fat = fs->fs_type;
danghuutoan 0:f24ba3a89ec1 3427 nfree = 0;
danghuutoan 0:f24ba3a89ec1 3428 if (fat == FS_FAT12) { /* Sector unalighed entries: Search FAT via regular routine. */
danghuutoan 0:f24ba3a89ec1 3429 clst = 2;
danghuutoan 0:f24ba3a89ec1 3430 do {
danghuutoan 0:f24ba3a89ec1 3431 stat = get_fat(fs, clst);
danghuutoan 0:f24ba3a89ec1 3432 if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
danghuutoan 0:f24ba3a89ec1 3433 if (stat == 1) { res = FR_INT_ERR; break; }
danghuutoan 0:f24ba3a89ec1 3434 if (stat == 0) nfree++;
danghuutoan 0:f24ba3a89ec1 3435 } while (++clst < fs->n_fatent);
danghuutoan 0:f24ba3a89ec1 3436 } else { /* Sector alighed entries: Accelerate the FAT search. */
danghuutoan 0:f24ba3a89ec1 3437 clst = fs->n_fatent; sect = fs->fatbase;
danghuutoan 0:f24ba3a89ec1 3438 i = 0; p = 0;
danghuutoan 0:f24ba3a89ec1 3439 do {
danghuutoan 0:f24ba3a89ec1 3440 if (!i) {
danghuutoan 0:f24ba3a89ec1 3441 res = move_window(fs, sect++);
danghuutoan 0:f24ba3a89ec1 3442 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 3443 p = fs->win;
danghuutoan 0:f24ba3a89ec1 3444 i = SS(fs);
danghuutoan 0:f24ba3a89ec1 3445 }
danghuutoan 0:f24ba3a89ec1 3446 if (fat == FS_FAT16) {
danghuutoan 0:f24ba3a89ec1 3447 if (LD_WORD(p) == 0) nfree++;
danghuutoan 0:f24ba3a89ec1 3448 p += 2; i -= 2;
danghuutoan 0:f24ba3a89ec1 3449 } else {
danghuutoan 0:f24ba3a89ec1 3450 if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) nfree++;
danghuutoan 0:f24ba3a89ec1 3451 p += 4; i -= 4;
danghuutoan 0:f24ba3a89ec1 3452 }
danghuutoan 0:f24ba3a89ec1 3453 } while (--clst);
danghuutoan 0:f24ba3a89ec1 3454 }
danghuutoan 0:f24ba3a89ec1 3455 fs->free_clust = nfree; /* free_clust is valid */
danghuutoan 0:f24ba3a89ec1 3456 fs->fsi_flag |= 1; /* FSInfo is to be updated */
danghuutoan 0:f24ba3a89ec1 3457 *nclst = nfree; /* Return the free clusters */
danghuutoan 0:f24ba3a89ec1 3458 }
danghuutoan 0:f24ba3a89ec1 3459 }
danghuutoan 0:f24ba3a89ec1 3460 LEAVE_FF(fs, res);
danghuutoan 0:f24ba3a89ec1 3461 }
danghuutoan 0:f24ba3a89ec1 3462
danghuutoan 0:f24ba3a89ec1 3463
danghuutoan 0:f24ba3a89ec1 3464
danghuutoan 0:f24ba3a89ec1 3465
danghuutoan 0:f24ba3a89ec1 3466 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3467 /* Truncate File */
danghuutoan 0:f24ba3a89ec1 3468 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3469
danghuutoan 0:f24ba3a89ec1 3470 FRESULT f_truncate (
danghuutoan 0:f24ba3a89ec1 3471 FIL* fp /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 3472 )
danghuutoan 0:f24ba3a89ec1 3473 {
danghuutoan 0:f24ba3a89ec1 3474 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3475 DWORD ncl;
danghuutoan 0:f24ba3a89ec1 3476
danghuutoan 0:f24ba3a89ec1 3477
danghuutoan 0:f24ba3a89ec1 3478 res = validate(fp); /* Check validity of the object */
danghuutoan 0:f24ba3a89ec1 3479 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3480 if (fp->err) { /* Check error */
danghuutoan 0:f24ba3a89ec1 3481 res = (FRESULT)fp->err;
danghuutoan 0:f24ba3a89ec1 3482 } else {
danghuutoan 0:f24ba3a89ec1 3483 if (!(fp->flag & FA_WRITE)) /* Check access mode */
danghuutoan 0:f24ba3a89ec1 3484 res = FR_DENIED;
danghuutoan 0:f24ba3a89ec1 3485 }
danghuutoan 0:f24ba3a89ec1 3486 }
danghuutoan 0:f24ba3a89ec1 3487 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3488 if (fp->fsize > fp->fptr) {
danghuutoan 0:f24ba3a89ec1 3489 fp->fsize = fp->fptr; /* Set file size to current R/W point */
danghuutoan 0:f24ba3a89ec1 3490 fp->flag |= FA__WRITTEN;
danghuutoan 0:f24ba3a89ec1 3491 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
danghuutoan 0:f24ba3a89ec1 3492 res = remove_chain(fp->fs, fp->sclust);
danghuutoan 0:f24ba3a89ec1 3493 fp->sclust = 0;
danghuutoan 0:f24ba3a89ec1 3494 } else { /* When truncate a part of the file, remove remaining clusters */
danghuutoan 0:f24ba3a89ec1 3495 ncl = get_fat(fp->fs, fp->clust);
danghuutoan 0:f24ba3a89ec1 3496 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3497 if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 3498 if (ncl == 1) res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 3499 if (res == FR_OK && ncl < fp->fs->n_fatent) {
danghuutoan 0:f24ba3a89ec1 3500 res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
danghuutoan 0:f24ba3a89ec1 3501 if (res == FR_OK) res = remove_chain(fp->fs, ncl);
danghuutoan 0:f24ba3a89ec1 3502 }
danghuutoan 0:f24ba3a89ec1 3503 }
danghuutoan 0:f24ba3a89ec1 3504 #if !_FS_TINY
danghuutoan 0:f24ba3a89ec1 3505 if (res == FR_OK && (fp->flag & FA__DIRTY)) {
danghuutoan 0:f24ba3a89ec1 3506 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 3507 res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 3508 else
danghuutoan 0:f24ba3a89ec1 3509 fp->flag &= ~FA__DIRTY;
danghuutoan 0:f24ba3a89ec1 3510 }
danghuutoan 0:f24ba3a89ec1 3511 #endif
danghuutoan 0:f24ba3a89ec1 3512 }
danghuutoan 0:f24ba3a89ec1 3513 if (res != FR_OK) fp->err = (FRESULT)res;
danghuutoan 0:f24ba3a89ec1 3514 }
danghuutoan 0:f24ba3a89ec1 3515
danghuutoan 0:f24ba3a89ec1 3516 LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 3517 }
danghuutoan 0:f24ba3a89ec1 3518
danghuutoan 0:f24ba3a89ec1 3519
danghuutoan 0:f24ba3a89ec1 3520
danghuutoan 0:f24ba3a89ec1 3521
danghuutoan 0:f24ba3a89ec1 3522 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3523 /* Delete a File or Directory */
danghuutoan 0:f24ba3a89ec1 3524 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3525
danghuutoan 0:f24ba3a89ec1 3526 FRESULT f_unlink (
danghuutoan 0:f24ba3a89ec1 3527 const TCHAR* path /* Pointer to the file or directory path */
danghuutoan 0:f24ba3a89ec1 3528 )
danghuutoan 0:f24ba3a89ec1 3529 {
danghuutoan 0:f24ba3a89ec1 3530 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3531 DIR dj, sdj;
danghuutoan 0:f24ba3a89ec1 3532 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 3533 DWORD dclst = 0;
danghuutoan 0:f24ba3a89ec1 3534 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3535
danghuutoan 0:f24ba3a89ec1 3536
danghuutoan 0:f24ba3a89ec1 3537 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3538 res = find_volume(&dj.fs, &path, 1);
danghuutoan 0:f24ba3a89ec1 3539 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3540 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 3541 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 3542 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
danghuutoan 0:f24ba3a89ec1 3543 res = FR_INVALID_NAME; /* Cannot remove dot entry */
danghuutoan 0:f24ba3a89ec1 3544 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 3545 if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open object */
danghuutoan 0:f24ba3a89ec1 3546 #endif
danghuutoan 0:f24ba3a89ec1 3547 if (res == FR_OK) { /* The object is accessible */
danghuutoan 0:f24ba3a89ec1 3548 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 3549 if (!dir) {
danghuutoan 0:f24ba3a89ec1 3550 res = FR_INVALID_NAME; /* Cannot remove the origin directory */
danghuutoan 0:f24ba3a89ec1 3551 } else {
danghuutoan 0:f24ba3a89ec1 3552 if (dir[DIR_Attr] & AM_RDO)
danghuutoan 0:f24ba3a89ec1 3553 res = FR_DENIED; /* Cannot remove R/O object */
danghuutoan 0:f24ba3a89ec1 3554 }
danghuutoan 0:f24ba3a89ec1 3555 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3556 dclst = ld_clust(dj.fs, dir);
danghuutoan 0:f24ba3a89ec1 3557 if (dclst && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-directory ? */
danghuutoan 0:f24ba3a89ec1 3558 #if _FS_RPATH
danghuutoan 0:f24ba3a89ec1 3559 if (dclst == dj.fs->cdir) { /* Is it the current directory? */
danghuutoan 0:f24ba3a89ec1 3560 res = FR_DENIED;
danghuutoan 0:f24ba3a89ec1 3561 } else
danghuutoan 0:f24ba3a89ec1 3562 #endif
danghuutoan 0:f24ba3a89ec1 3563 {
danghuutoan 0:f24ba3a89ec1 3564 mem_cpy(&sdj, &dj, sizeof (DIR)); /* Open the sub-directory */
danghuutoan 0:f24ba3a89ec1 3565 sdj.sclust = dclst;
danghuutoan 0:f24ba3a89ec1 3566 res = dir_sdi(&sdj, 2);
danghuutoan 0:f24ba3a89ec1 3567 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3568 res = dir_read(&sdj, 0); /* Read an item (excluding dot entries) */
danghuutoan 0:f24ba3a89ec1 3569 if (res == FR_OK) res = FR_DENIED; /* Not empty? (cannot remove) */
danghuutoan 0:f24ba3a89ec1 3570 if (res == FR_NO_FILE) res = FR_OK; /* Empty? (can remove) */
danghuutoan 0:f24ba3a89ec1 3571 }
danghuutoan 0:f24ba3a89ec1 3572 }
danghuutoan 0:f24ba3a89ec1 3573 }
danghuutoan 0:f24ba3a89ec1 3574 }
danghuutoan 0:f24ba3a89ec1 3575 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3576 res = dir_remove(&dj); /* Remove the directory entry */
danghuutoan 0:f24ba3a89ec1 3577 if (res == FR_OK && dclst) /* Remove the cluster chain if exist */
danghuutoan 0:f24ba3a89ec1 3578 res = remove_chain(dj.fs, dclst);
danghuutoan 0:f24ba3a89ec1 3579 if (res == FR_OK) res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3580 }
danghuutoan 0:f24ba3a89ec1 3581 }
danghuutoan 0:f24ba3a89ec1 3582 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3583 }
danghuutoan 0:f24ba3a89ec1 3584
danghuutoan 0:f24ba3a89ec1 3585 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3586 }
danghuutoan 0:f24ba3a89ec1 3587
danghuutoan 0:f24ba3a89ec1 3588
danghuutoan 0:f24ba3a89ec1 3589
danghuutoan 0:f24ba3a89ec1 3590
danghuutoan 0:f24ba3a89ec1 3591 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3592 /* Create a Directory */
danghuutoan 0:f24ba3a89ec1 3593 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3594
danghuutoan 0:f24ba3a89ec1 3595 FRESULT f_mkdir (
danghuutoan 0:f24ba3a89ec1 3596 const TCHAR* path /* Pointer to the directory path */
danghuutoan 0:f24ba3a89ec1 3597 )
danghuutoan 0:f24ba3a89ec1 3598 {
danghuutoan 0:f24ba3a89ec1 3599 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3600 DIR dj;
danghuutoan 0:f24ba3a89ec1 3601 BYTE *dir, n;
danghuutoan 0:f24ba3a89ec1 3602 DWORD dsc, dcl, pcl, tm = GET_FATTIME();
danghuutoan 0:f24ba3a89ec1 3603 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3604
danghuutoan 0:f24ba3a89ec1 3605
danghuutoan 0:f24ba3a89ec1 3606 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3607 res = find_volume(&dj.fs, &path, 1);
danghuutoan 0:f24ba3a89ec1 3608 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3609 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 3610 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 3611 if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
danghuutoan 0:f24ba3a89ec1 3612 if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))
danghuutoan 0:f24ba3a89ec1 3613 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3614 if (res == FR_NO_FILE) { /* Can create a new directory */
danghuutoan 0:f24ba3a89ec1 3615 dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
danghuutoan 0:f24ba3a89ec1 3616 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3617 if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
danghuutoan 0:f24ba3a89ec1 3618 if (dcl == 1) res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 3619 if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 3620 if (res == FR_OK) /* Flush FAT */
danghuutoan 0:f24ba3a89ec1 3621 res = sync_window(dj.fs);
danghuutoan 0:f24ba3a89ec1 3622 if (res == FR_OK) { /* Initialize the new directory table */
danghuutoan 0:f24ba3a89ec1 3623 dsc = clust2sect(dj.fs, dcl);
danghuutoan 0:f24ba3a89ec1 3624 dir = dj.fs->win;
danghuutoan 0:f24ba3a89ec1 3625 mem_set(dir, 0, SS(dj.fs));
danghuutoan 0:f24ba3a89ec1 3626 mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
danghuutoan 0:f24ba3a89ec1 3627 dir[DIR_Name] = '.';
danghuutoan 0:f24ba3a89ec1 3628 dir[DIR_Attr] = AM_DIR;
danghuutoan 0:f24ba3a89ec1 3629 ST_DWORD(dir + DIR_WrtTime, tm);
danghuutoan 0:f24ba3a89ec1 3630 st_clust(dir, dcl);
danghuutoan 0:f24ba3a89ec1 3631 mem_cpy(dir + SZ_DIRE, dir, SZ_DIRE); /* Create ".." entry */
danghuutoan 0:f24ba3a89ec1 3632 dir[SZ_DIRE + 1] = '.'; pcl = dj.sclust;
danghuutoan 0:f24ba3a89ec1 3633 if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
danghuutoan 0:f24ba3a89ec1 3634 pcl = 0;
danghuutoan 0:f24ba3a89ec1 3635 st_clust(dir + SZ_DIRE, pcl);
danghuutoan 0:f24ba3a89ec1 3636 for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
danghuutoan 0:f24ba3a89ec1 3637 dj.fs->winsect = dsc++;
danghuutoan 0:f24ba3a89ec1 3638 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3639 res = sync_window(dj.fs);
danghuutoan 0:f24ba3a89ec1 3640 if (res != FR_OK) break;
danghuutoan 0:f24ba3a89ec1 3641 mem_set(dir, 0, SS(dj.fs));
danghuutoan 0:f24ba3a89ec1 3642 }
danghuutoan 0:f24ba3a89ec1 3643 }
danghuutoan 0:f24ba3a89ec1 3644 if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
danghuutoan 0:f24ba3a89ec1 3645 if (res != FR_OK) {
danghuutoan 0:f24ba3a89ec1 3646 remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
danghuutoan 0:f24ba3a89ec1 3647 } else {
danghuutoan 0:f24ba3a89ec1 3648 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 3649 dir[DIR_Attr] = AM_DIR; /* Attribute */
danghuutoan 0:f24ba3a89ec1 3650 ST_DWORD(dir + DIR_WrtTime, tm); /* Created time */
danghuutoan 0:f24ba3a89ec1 3651 st_clust(dir, dcl); /* Table start cluster */
danghuutoan 0:f24ba3a89ec1 3652 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3653 res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3654 }
danghuutoan 0:f24ba3a89ec1 3655 }
danghuutoan 0:f24ba3a89ec1 3656 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3657 }
danghuutoan 0:f24ba3a89ec1 3658
danghuutoan 0:f24ba3a89ec1 3659 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3660 }
danghuutoan 0:f24ba3a89ec1 3661
danghuutoan 0:f24ba3a89ec1 3662
danghuutoan 0:f24ba3a89ec1 3663
danghuutoan 0:f24ba3a89ec1 3664
danghuutoan 0:f24ba3a89ec1 3665 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3666 /* Change Attribute */
danghuutoan 0:f24ba3a89ec1 3667 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3668
danghuutoan 0:f24ba3a89ec1 3669 FRESULT f_chmod (
danghuutoan 0:f24ba3a89ec1 3670 const TCHAR* path, /* Pointer to the file path */
danghuutoan 0:f24ba3a89ec1 3671 BYTE attr, /* Attribute bits */
danghuutoan 0:f24ba3a89ec1 3672 BYTE mask /* Attribute mask to change */
danghuutoan 0:f24ba3a89ec1 3673 )
danghuutoan 0:f24ba3a89ec1 3674 {
danghuutoan 0:f24ba3a89ec1 3675 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3676 DIR dj;
danghuutoan 0:f24ba3a89ec1 3677 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 3678 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3679
danghuutoan 0:f24ba3a89ec1 3680
danghuutoan 0:f24ba3a89ec1 3681 res = find_volume(&dj.fs, &path, 1); /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3682 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3683 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 3684 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 3685 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3686 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
danghuutoan 0:f24ba3a89ec1 3687 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3688 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3689 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 3690 if (!dir) { /* Is it a root directory? */
danghuutoan 0:f24ba3a89ec1 3691 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3692 } else { /* File or sub directory */
danghuutoan 0:f24ba3a89ec1 3693 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
danghuutoan 0:f24ba3a89ec1 3694 dir[DIR_Attr] = (attr & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
danghuutoan 0:f24ba3a89ec1 3695 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3696 res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3697 }
danghuutoan 0:f24ba3a89ec1 3698 }
danghuutoan 0:f24ba3a89ec1 3699 }
danghuutoan 0:f24ba3a89ec1 3700
danghuutoan 0:f24ba3a89ec1 3701 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3702 }
danghuutoan 0:f24ba3a89ec1 3703
danghuutoan 0:f24ba3a89ec1 3704
danghuutoan 0:f24ba3a89ec1 3705
danghuutoan 0:f24ba3a89ec1 3706
danghuutoan 0:f24ba3a89ec1 3707 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3708 /* Rename File/Directory */
danghuutoan 0:f24ba3a89ec1 3709 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3710
danghuutoan 0:f24ba3a89ec1 3711 FRESULT f_rename (
danghuutoan 0:f24ba3a89ec1 3712 const TCHAR* path_old, /* Pointer to the object to be renamed */
danghuutoan 0:f24ba3a89ec1 3713 const TCHAR* path_new /* Pointer to the new name */
danghuutoan 0:f24ba3a89ec1 3714 )
danghuutoan 0:f24ba3a89ec1 3715 {
danghuutoan 0:f24ba3a89ec1 3716 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3717 DIR djo, djn;
danghuutoan 0:f24ba3a89ec1 3718 BYTE buf[21], *dir;
danghuutoan 0:f24ba3a89ec1 3719 DWORD dw;
danghuutoan 0:f24ba3a89ec1 3720 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3721
danghuutoan 0:f24ba3a89ec1 3722
danghuutoan 0:f24ba3a89ec1 3723 /* Get logical drive number of the source object */
danghuutoan 0:f24ba3a89ec1 3724 res = find_volume(&djo.fs, &path_old, 1);
danghuutoan 0:f24ba3a89ec1 3725 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3726 djn.fs = djo.fs;
danghuutoan 0:f24ba3a89ec1 3727 INIT_BUF(djo);
danghuutoan 0:f24ba3a89ec1 3728 res = follow_path(&djo, path_old); /* Check old object */
danghuutoan 0:f24ba3a89ec1 3729 if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))
danghuutoan 0:f24ba3a89ec1 3730 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3731 #if _FS_LOCK
danghuutoan 0:f24ba3a89ec1 3732 if (res == FR_OK) res = chk_lock(&djo, 2);
danghuutoan 0:f24ba3a89ec1 3733 #endif
danghuutoan 0:f24ba3a89ec1 3734 if (res == FR_OK) { /* Old object is found */
danghuutoan 0:f24ba3a89ec1 3735 if (!djo.dir) { /* Is root dir? */
danghuutoan 0:f24ba3a89ec1 3736 res = FR_NO_FILE;
danghuutoan 0:f24ba3a89ec1 3737 } else {
danghuutoan 0:f24ba3a89ec1 3738 mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about object except name */
danghuutoan 0:f24ba3a89ec1 3739 mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */
danghuutoan 0:f24ba3a89ec1 3740 if (get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
danghuutoan 0:f24ba3a89ec1 3741 res = follow_path(&djn, path_new); /* and make sure if new object name is not conflicting */
danghuutoan 0:f24ba3a89ec1 3742 else
danghuutoan 0:f24ba3a89ec1 3743 res = FR_INVALID_DRIVE;
danghuutoan 0:f24ba3a89ec1 3744 if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
danghuutoan 0:f24ba3a89ec1 3745 if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
danghuutoan 0:f24ba3a89ec1 3746 res = dir_register(&djn); /* Register the new entry */
danghuutoan 0:f24ba3a89ec1 3747 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3748 /* Start of critical section where any interruption can cause a cross-link */
danghuutoan 0:f24ba3a89ec1 3749 dir = djn.dir; /* Copy information about object except name */
danghuutoan 0:f24ba3a89ec1 3750 mem_cpy(dir + 13, buf + 2, 19);
danghuutoan 0:f24ba3a89ec1 3751 dir[DIR_Attr] = buf[0] | AM_ARC;
danghuutoan 0:f24ba3a89ec1 3752 djo.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3753 if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) { /* Update .. entry in the sub-directory if needed */
danghuutoan 0:f24ba3a89ec1 3754 dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
danghuutoan 0:f24ba3a89ec1 3755 if (!dw) {
danghuutoan 0:f24ba3a89ec1 3756 res = FR_INT_ERR;
danghuutoan 0:f24ba3a89ec1 3757 } else {
danghuutoan 0:f24ba3a89ec1 3758 res = move_window(djo.fs, dw);
danghuutoan 0:f24ba3a89ec1 3759 dir = djo.fs->win + SZ_DIRE * 1; /* Ptr to .. entry */
danghuutoan 0:f24ba3a89ec1 3760 if (res == FR_OK && dir[1] == '.') {
danghuutoan 0:f24ba3a89ec1 3761 st_clust(dir, djn.sclust);
danghuutoan 0:f24ba3a89ec1 3762 djo.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3763 }
danghuutoan 0:f24ba3a89ec1 3764 }
danghuutoan 0:f24ba3a89ec1 3765 }
danghuutoan 0:f24ba3a89ec1 3766 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3767 res = dir_remove(&djo); /* Remove old entry */
danghuutoan 0:f24ba3a89ec1 3768 if (res == FR_OK)
danghuutoan 0:f24ba3a89ec1 3769 res = sync_fs(djo.fs);
danghuutoan 0:f24ba3a89ec1 3770 }
danghuutoan 0:f24ba3a89ec1 3771 /* End of critical section */
danghuutoan 0:f24ba3a89ec1 3772 }
danghuutoan 0:f24ba3a89ec1 3773 }
danghuutoan 0:f24ba3a89ec1 3774 }
danghuutoan 0:f24ba3a89ec1 3775 }
danghuutoan 0:f24ba3a89ec1 3776 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3777 }
danghuutoan 0:f24ba3a89ec1 3778
danghuutoan 0:f24ba3a89ec1 3779 LEAVE_FF(djo.fs, res);
danghuutoan 0:f24ba3a89ec1 3780 }
danghuutoan 0:f24ba3a89ec1 3781
danghuutoan 0:f24ba3a89ec1 3782
danghuutoan 0:f24ba3a89ec1 3783
danghuutoan 0:f24ba3a89ec1 3784
danghuutoan 0:f24ba3a89ec1 3785 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3786 /* Change Timestamp */
danghuutoan 0:f24ba3a89ec1 3787 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3788
danghuutoan 0:f24ba3a89ec1 3789 FRESULT f_utime (
danghuutoan 0:f24ba3a89ec1 3790 const TCHAR* path, /* Pointer to the file/directory name */
danghuutoan 0:f24ba3a89ec1 3791 const FILINFO* fno /* Pointer to the time stamp to be set */
danghuutoan 0:f24ba3a89ec1 3792 )
danghuutoan 0:f24ba3a89ec1 3793 {
danghuutoan 0:f24ba3a89ec1 3794 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3795 DIR dj;
danghuutoan 0:f24ba3a89ec1 3796 BYTE *dir;
danghuutoan 0:f24ba3a89ec1 3797 DEFINE_NAMEBUF;
danghuutoan 0:f24ba3a89ec1 3798
danghuutoan 0:f24ba3a89ec1 3799
danghuutoan 0:f24ba3a89ec1 3800 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3801 res = find_volume(&dj.fs, &path, 1);
danghuutoan 0:f24ba3a89ec1 3802 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3803 INIT_BUF(dj);
danghuutoan 0:f24ba3a89ec1 3804 res = follow_path(&dj, path); /* Follow the file path */
danghuutoan 0:f24ba3a89ec1 3805 FREE_BUF();
danghuutoan 0:f24ba3a89ec1 3806 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
danghuutoan 0:f24ba3a89ec1 3807 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3808 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3809 dir = dj.dir;
danghuutoan 0:f24ba3a89ec1 3810 if (!dir) { /* Root directory */
danghuutoan 0:f24ba3a89ec1 3811 res = FR_INVALID_NAME;
danghuutoan 0:f24ba3a89ec1 3812 } else { /* File or sub-directory */
danghuutoan 0:f24ba3a89ec1 3813 ST_WORD(dir + DIR_WrtTime, fno->ftime);
danghuutoan 0:f24ba3a89ec1 3814 ST_WORD(dir + DIR_WrtDate, fno->fdate);
danghuutoan 0:f24ba3a89ec1 3815 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3816 res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3817 }
danghuutoan 0:f24ba3a89ec1 3818 }
danghuutoan 0:f24ba3a89ec1 3819 }
danghuutoan 0:f24ba3a89ec1 3820
danghuutoan 0:f24ba3a89ec1 3821 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3822 }
danghuutoan 0:f24ba3a89ec1 3823
danghuutoan 0:f24ba3a89ec1 3824 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 3825 #endif /* _FS_MINIMIZE == 0 */
danghuutoan 0:f24ba3a89ec1 3826 #endif /* _FS_MINIMIZE <= 1 */
danghuutoan 0:f24ba3a89ec1 3827 #endif /* _FS_MINIMIZE <= 2 */
danghuutoan 0:f24ba3a89ec1 3828
danghuutoan 0:f24ba3a89ec1 3829
danghuutoan 0:f24ba3a89ec1 3830
danghuutoan 0:f24ba3a89ec1 3831
danghuutoan 0:f24ba3a89ec1 3832 #if _USE_LABEL
danghuutoan 0:f24ba3a89ec1 3833 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3834 /* Get volume label */
danghuutoan 0:f24ba3a89ec1 3835 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3836
danghuutoan 0:f24ba3a89ec1 3837 FRESULT f_getlabel (
danghuutoan 0:f24ba3a89ec1 3838 const TCHAR* path, /* Path name of the logical drive number */
danghuutoan 0:f24ba3a89ec1 3839 TCHAR* label, /* Pointer to a buffer to return the volume label */
danghuutoan 0:f24ba3a89ec1 3840 DWORD* vsn /* Pointer to a variable to return the volume serial number */
danghuutoan 0:f24ba3a89ec1 3841 )
danghuutoan 0:f24ba3a89ec1 3842 {
danghuutoan 0:f24ba3a89ec1 3843 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3844 DIR dj;
danghuutoan 0:f24ba3a89ec1 3845 UINT i, j;
danghuutoan 0:f24ba3a89ec1 3846 #if _USE_LFN && _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 3847 WCHAR w;
danghuutoan 0:f24ba3a89ec1 3848 #endif
danghuutoan 0:f24ba3a89ec1 3849
danghuutoan 0:f24ba3a89ec1 3850
danghuutoan 0:f24ba3a89ec1 3851 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3852 res = find_volume(&dj.fs, &path, 0);
danghuutoan 0:f24ba3a89ec1 3853
danghuutoan 0:f24ba3a89ec1 3854 /* Get volume label */
danghuutoan 0:f24ba3a89ec1 3855 if (res == FR_OK && label) {
danghuutoan 0:f24ba3a89ec1 3856 dj.sclust = 0; /* Open root directory */
danghuutoan 0:f24ba3a89ec1 3857 res = dir_sdi(&dj, 0);
danghuutoan 0:f24ba3a89ec1 3858 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3859 res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
danghuutoan 0:f24ba3a89ec1 3860 if (res == FR_OK) { /* A volume label is exist */
danghuutoan 0:f24ba3a89ec1 3861 #if _USE_LFN && _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 3862 i = j = 0;
danghuutoan 0:f24ba3a89ec1 3863 do {
danghuutoan 0:f24ba3a89ec1 3864 w = (i < 11) ? dj.dir[i++] : ' ';
danghuutoan 0:f24ba3a89ec1 3865 if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))
danghuutoan 0:f24ba3a89ec1 3866 w = w << 8 | dj.dir[i++];
danghuutoan 0:f24ba3a89ec1 3867 label[j++] = ff_convert(w, 1); /* OEM -> Unicode */
danghuutoan 0:f24ba3a89ec1 3868 } while (j < 11);
danghuutoan 0:f24ba3a89ec1 3869 #else
danghuutoan 0:f24ba3a89ec1 3870 mem_cpy(label, dj.dir, 11);
danghuutoan 0:f24ba3a89ec1 3871 #endif
danghuutoan 0:f24ba3a89ec1 3872 j = 11;
danghuutoan 0:f24ba3a89ec1 3873 do {
danghuutoan 0:f24ba3a89ec1 3874 label[j] = 0;
danghuutoan 0:f24ba3a89ec1 3875 if (!j) break;
danghuutoan 0:f24ba3a89ec1 3876 } while (label[--j] == ' ');
danghuutoan 0:f24ba3a89ec1 3877 }
danghuutoan 0:f24ba3a89ec1 3878 if (res == FR_NO_FILE) { /* No label, return nul string */
danghuutoan 0:f24ba3a89ec1 3879 label[0] = 0;
danghuutoan 0:f24ba3a89ec1 3880 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3881 }
danghuutoan 0:f24ba3a89ec1 3882 }
danghuutoan 0:f24ba3a89ec1 3883 }
danghuutoan 0:f24ba3a89ec1 3884
danghuutoan 0:f24ba3a89ec1 3885 /* Get volume serial number */
danghuutoan 0:f24ba3a89ec1 3886 if (res == FR_OK && vsn) {
danghuutoan 0:f24ba3a89ec1 3887 res = move_window(dj.fs, dj.fs->volbase);
danghuutoan 0:f24ba3a89ec1 3888 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3889 i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;
danghuutoan 0:f24ba3a89ec1 3890 *vsn = LD_DWORD(&dj.fs->win[i]);
danghuutoan 0:f24ba3a89ec1 3891 }
danghuutoan 0:f24ba3a89ec1 3892 }
danghuutoan 0:f24ba3a89ec1 3893
danghuutoan 0:f24ba3a89ec1 3894 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3895 }
danghuutoan 0:f24ba3a89ec1 3896
danghuutoan 0:f24ba3a89ec1 3897
danghuutoan 0:f24ba3a89ec1 3898
danghuutoan 0:f24ba3a89ec1 3899 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 3900 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3901 /* Set volume label */
danghuutoan 0:f24ba3a89ec1 3902 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3903
danghuutoan 0:f24ba3a89ec1 3904 FRESULT f_setlabel (
danghuutoan 0:f24ba3a89ec1 3905 const TCHAR* label /* Pointer to the volume label to set */
danghuutoan 0:f24ba3a89ec1 3906 )
danghuutoan 0:f24ba3a89ec1 3907 {
danghuutoan 0:f24ba3a89ec1 3908 FRESULT res;
danghuutoan 0:f24ba3a89ec1 3909 DIR dj;
danghuutoan 0:f24ba3a89ec1 3910 BYTE vn[11];
danghuutoan 0:f24ba3a89ec1 3911 UINT i, j, sl;
danghuutoan 0:f24ba3a89ec1 3912 WCHAR w;
danghuutoan 0:f24ba3a89ec1 3913 DWORD tm;
danghuutoan 0:f24ba3a89ec1 3914
danghuutoan 0:f24ba3a89ec1 3915
danghuutoan 0:f24ba3a89ec1 3916 /* Get logical drive number */
danghuutoan 0:f24ba3a89ec1 3917 res = find_volume(&dj.fs, &label, 1);
danghuutoan 0:f24ba3a89ec1 3918 if (res) LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3919
danghuutoan 0:f24ba3a89ec1 3920 /* Create a volume label in directory form */
danghuutoan 0:f24ba3a89ec1 3921 vn[0] = 0;
danghuutoan 0:f24ba3a89ec1 3922 for (sl = 0; label[sl]; sl++) ; /* Get name length */
danghuutoan 0:f24ba3a89ec1 3923 for ( ; sl && label[sl - 1] == ' '; sl--) ; /* Remove trailing spaces */
danghuutoan 0:f24ba3a89ec1 3924 if (sl) { /* Create volume label in directory form */
danghuutoan 0:f24ba3a89ec1 3925 i = j = 0;
danghuutoan 0:f24ba3a89ec1 3926 do {
danghuutoan 0:f24ba3a89ec1 3927 #if _USE_LFN && _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 3928 w = ff_convert(ff_wtoupper(label[i++]), 0);
danghuutoan 0:f24ba3a89ec1 3929 #else
danghuutoan 0:f24ba3a89ec1 3930 w = (BYTE)label[i++];
danghuutoan 0:f24ba3a89ec1 3931 if (IsDBCS1(w))
danghuutoan 0:f24ba3a89ec1 3932 w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
danghuutoan 0:f24ba3a89ec1 3933 #if _USE_LFN
danghuutoan 0:f24ba3a89ec1 3934 w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
danghuutoan 0:f24ba3a89ec1 3935 #else
danghuutoan 0:f24ba3a89ec1 3936 if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */
danghuutoan 0:f24ba3a89ec1 3937 #ifdef _EXCVT
danghuutoan 0:f24ba3a89ec1 3938 if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
danghuutoan 0:f24ba3a89ec1 3939 #else
danghuutoan 0:f24ba3a89ec1 3940 if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */
danghuutoan 0:f24ba3a89ec1 3941 #endif
danghuutoan 0:f24ba3a89ec1 3942 #endif
danghuutoan 0:f24ba3a89ec1 3943 #endif
danghuutoan 0:f24ba3a89ec1 3944 if (!w || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */
danghuutoan 0:f24ba3a89ec1 3945 LEAVE_FF(dj.fs, FR_INVALID_NAME);
danghuutoan 0:f24ba3a89ec1 3946 if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);
danghuutoan 0:f24ba3a89ec1 3947 vn[j++] = (BYTE)w;
danghuutoan 0:f24ba3a89ec1 3948 } while (i < sl);
danghuutoan 0:f24ba3a89ec1 3949 while (j < 11) vn[j++] = ' '; /* Fill remaining name field */
danghuutoan 0:f24ba3a89ec1 3950 if (vn[0] == DDEM) LEAVE_FF(dj.fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
danghuutoan 0:f24ba3a89ec1 3951 }
danghuutoan 0:f24ba3a89ec1 3952
danghuutoan 0:f24ba3a89ec1 3953 /* Set volume label */
danghuutoan 0:f24ba3a89ec1 3954 dj.sclust = 0; /* Open root directory */
danghuutoan 0:f24ba3a89ec1 3955 res = dir_sdi(&dj, 0);
danghuutoan 0:f24ba3a89ec1 3956 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3957 res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
danghuutoan 0:f24ba3a89ec1 3958 if (res == FR_OK) { /* A volume label is found */
danghuutoan 0:f24ba3a89ec1 3959 if (vn[0]) {
danghuutoan 0:f24ba3a89ec1 3960 mem_cpy(dj.dir, vn, 11); /* Change the volume label name */
danghuutoan 0:f24ba3a89ec1 3961 tm = GET_FATTIME();
danghuutoan 0:f24ba3a89ec1 3962 ST_DWORD(dj.dir + DIR_WrtTime, tm);
danghuutoan 0:f24ba3a89ec1 3963 } else {
danghuutoan 0:f24ba3a89ec1 3964 dj.dir[0] = DDEM; /* Remove the volume label */
danghuutoan 0:f24ba3a89ec1 3965 }
danghuutoan 0:f24ba3a89ec1 3966 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3967 res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3968 } else { /* No volume label is found or error */
danghuutoan 0:f24ba3a89ec1 3969 if (res == FR_NO_FILE) {
danghuutoan 0:f24ba3a89ec1 3970 res = FR_OK;
danghuutoan 0:f24ba3a89ec1 3971 if (vn[0]) { /* Create volume label as new */
danghuutoan 0:f24ba3a89ec1 3972 res = dir_alloc(&dj, 1); /* Allocate an entry for volume label */
danghuutoan 0:f24ba3a89ec1 3973 if (res == FR_OK) {
danghuutoan 0:f24ba3a89ec1 3974 mem_set(dj.dir, 0, SZ_DIRE); /* Set volume label */
danghuutoan 0:f24ba3a89ec1 3975 mem_cpy(dj.dir, vn, 11);
danghuutoan 0:f24ba3a89ec1 3976 dj.dir[DIR_Attr] = AM_VOL;
danghuutoan 0:f24ba3a89ec1 3977 tm = GET_FATTIME();
danghuutoan 0:f24ba3a89ec1 3978 ST_DWORD(dj.dir + DIR_WrtTime, tm);
danghuutoan 0:f24ba3a89ec1 3979 dj.fs->wflag = 1;
danghuutoan 0:f24ba3a89ec1 3980 res = sync_fs(dj.fs);
danghuutoan 0:f24ba3a89ec1 3981 }
danghuutoan 0:f24ba3a89ec1 3982 }
danghuutoan 0:f24ba3a89ec1 3983 }
danghuutoan 0:f24ba3a89ec1 3984 }
danghuutoan 0:f24ba3a89ec1 3985 }
danghuutoan 0:f24ba3a89ec1 3986
danghuutoan 0:f24ba3a89ec1 3987 LEAVE_FF(dj.fs, res);
danghuutoan 0:f24ba3a89ec1 3988 }
danghuutoan 0:f24ba3a89ec1 3989
danghuutoan 0:f24ba3a89ec1 3990 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 3991 #endif /* _USE_LABEL */
danghuutoan 0:f24ba3a89ec1 3992
danghuutoan 0:f24ba3a89ec1 3993
danghuutoan 0:f24ba3a89ec1 3994
danghuutoan 0:f24ba3a89ec1 3995 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3996 /* Forward data to the stream directly (available on only tiny cfg) */
danghuutoan 0:f24ba3a89ec1 3997 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 3998 #if _USE_FORWARD && _FS_TINY
danghuutoan 0:f24ba3a89ec1 3999
danghuutoan 0:f24ba3a89ec1 4000 FRESULT f_forward (
danghuutoan 0:f24ba3a89ec1 4001 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 4002 UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
danghuutoan 0:f24ba3a89ec1 4003 UINT btf, /* Number of bytes to forward */
danghuutoan 0:f24ba3a89ec1 4004 UINT* bf /* Pointer to number of bytes forwarded */
danghuutoan 0:f24ba3a89ec1 4005 )
danghuutoan 0:f24ba3a89ec1 4006 {
danghuutoan 0:f24ba3a89ec1 4007 FRESULT res;
danghuutoan 0:f24ba3a89ec1 4008 DWORD remain, clst, sect;
danghuutoan 0:f24ba3a89ec1 4009 UINT rcnt;
danghuutoan 0:f24ba3a89ec1 4010 BYTE csect;
danghuutoan 0:f24ba3a89ec1 4011
danghuutoan 0:f24ba3a89ec1 4012
danghuutoan 0:f24ba3a89ec1 4013 *bf = 0; /* Clear transfer byte counter */
danghuutoan 0:f24ba3a89ec1 4014
danghuutoan 0:f24ba3a89ec1 4015 res = validate(fp); /* Check validity of the object */
danghuutoan 0:f24ba3a89ec1 4016 if (res != FR_OK) LEAVE_FF(fp->fs, res);
danghuutoan 0:f24ba3a89ec1 4017 if (fp->err) /* Check error */
danghuutoan 0:f24ba3a89ec1 4018 LEAVE_FF(fp->fs, (FRESULT)fp->err);
danghuutoan 0:f24ba3a89ec1 4019 if (!(fp->flag & FA_READ)) /* Check access mode */
danghuutoan 0:f24ba3a89ec1 4020 LEAVE_FF(fp->fs, FR_DENIED);
danghuutoan 0:f24ba3a89ec1 4021
danghuutoan 0:f24ba3a89ec1 4022 remain = fp->fsize - fp->fptr;
danghuutoan 0:f24ba3a89ec1 4023 if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
danghuutoan 0:f24ba3a89ec1 4024
danghuutoan 0:f24ba3a89ec1 4025 for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
danghuutoan 0:f24ba3a89ec1 4026 fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
danghuutoan 0:f24ba3a89ec1 4027 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
danghuutoan 0:f24ba3a89ec1 4028 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
danghuutoan 0:f24ba3a89ec1 4029 if (!csect) { /* On the cluster boundary? */
danghuutoan 0:f24ba3a89ec1 4030 clst = (fp->fptr == 0) ? /* On the top of the file? */
danghuutoan 0:f24ba3a89ec1 4031 fp->sclust : get_fat(fp->fs, fp->clust);
danghuutoan 0:f24ba3a89ec1 4032 if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 4033 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 4034 fp->clust = clst; /* Update current cluster */
danghuutoan 0:f24ba3a89ec1 4035 }
danghuutoan 0:f24ba3a89ec1 4036 }
danghuutoan 0:f24ba3a89ec1 4037 sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
danghuutoan 0:f24ba3a89ec1 4038 if (!sect) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 4039 sect += csect;
danghuutoan 0:f24ba3a89ec1 4040 if (move_window(fp->fs, sect) != FR_OK) /* Move sector window */
danghuutoan 0:f24ba3a89ec1 4041 ABORT(fp->fs, FR_DISK_ERR);
danghuutoan 0:f24ba3a89ec1 4042 fp->dsect = sect;
danghuutoan 0:f24ba3a89ec1 4043 rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
danghuutoan 0:f24ba3a89ec1 4044 if (rcnt > btf) rcnt = btf;
danghuutoan 0:f24ba3a89ec1 4045 rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
danghuutoan 0:f24ba3a89ec1 4046 if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
danghuutoan 0:f24ba3a89ec1 4047 }
danghuutoan 0:f24ba3a89ec1 4048
danghuutoan 0:f24ba3a89ec1 4049 LEAVE_FF(fp->fs, FR_OK);
danghuutoan 0:f24ba3a89ec1 4050 }
danghuutoan 0:f24ba3a89ec1 4051 #endif /* _USE_FORWARD */
danghuutoan 0:f24ba3a89ec1 4052
danghuutoan 0:f24ba3a89ec1 4053
danghuutoan 0:f24ba3a89ec1 4054
danghuutoan 0:f24ba3a89ec1 4055 #if _USE_MKFS && !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 4056 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4057 /* Create file system on the logical drive */
danghuutoan 0:f24ba3a89ec1 4058 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4059 #define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */
danghuutoan 0:f24ba3a89ec1 4060 #define N_FATS 1 /* Number of FATs (1 or 2) */
danghuutoan 0:f24ba3a89ec1 4061
danghuutoan 0:f24ba3a89ec1 4062
danghuutoan 0:f24ba3a89ec1 4063 FRESULT f_mkfs (
danghuutoan 0:f24ba3a89ec1 4064 const TCHAR* path, /* Logical drive number */
danghuutoan 0:f24ba3a89ec1 4065 BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
danghuutoan 0:f24ba3a89ec1 4066 UINT au /* Size of allocation unit in unit of byte or sector */
danghuutoan 0:f24ba3a89ec1 4067 )
danghuutoan 0:f24ba3a89ec1 4068 {
danghuutoan 0:f24ba3a89ec1 4069 static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
danghuutoan 0:f24ba3a89ec1 4070 static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
danghuutoan 0:f24ba3a89ec1 4071 int vol;
danghuutoan 0:f24ba3a89ec1 4072 BYTE fmt, md, sys, *tbl, pdrv, part;
danghuutoan 0:f24ba3a89ec1 4073 DWORD n_clst, vs, n, wsect;
danghuutoan 0:f24ba3a89ec1 4074 UINT i;
danghuutoan 0:f24ba3a89ec1 4075 DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
danghuutoan 0:f24ba3a89ec1 4076 DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
danghuutoan 0:f24ba3a89ec1 4077 FATFS *fs;
danghuutoan 0:f24ba3a89ec1 4078 DSTATUS stat;
danghuutoan 0:f24ba3a89ec1 4079 #if _USE_TRIM
danghuutoan 0:f24ba3a89ec1 4080 DWORD eb[2];
danghuutoan 0:f24ba3a89ec1 4081 #endif
danghuutoan 0:f24ba3a89ec1 4082
danghuutoan 0:f24ba3a89ec1 4083
danghuutoan 0:f24ba3a89ec1 4084 /* Check mounted drive and clear work area */
danghuutoan 0:f24ba3a89ec1 4085 if (sfd > 1) return FR_INVALID_PARAMETER;
danghuutoan 0:f24ba3a89ec1 4086 vol = get_ldnumber(&path);
danghuutoan 0:f24ba3a89ec1 4087 if (vol < 0) return FR_INVALID_DRIVE;
danghuutoan 0:f24ba3a89ec1 4088 fs = FatFs[vol];
danghuutoan 0:f24ba3a89ec1 4089 if (!fs) return FR_NOT_ENABLED;
danghuutoan 0:f24ba3a89ec1 4090 fs->fs_type = 0;
danghuutoan 0:f24ba3a89ec1 4091 pdrv = LD2PD(vol); /* Physical drive */
danghuutoan 0:f24ba3a89ec1 4092 part = LD2PT(vol); /* Partition (0:auto detect, 1-4:get from partition table)*/
danghuutoan 0:f24ba3a89ec1 4093
danghuutoan 0:f24ba3a89ec1 4094 /* Get disk statics */
danghuutoan 0:f24ba3a89ec1 4095 stat = disk_initialize(pdrv);
danghuutoan 0:f24ba3a89ec1 4096 if (stat & STA_NOINIT) return FR_NOT_READY;
danghuutoan 0:f24ba3a89ec1 4097 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
danghuutoan 0:f24ba3a89ec1 4098 #if _MAX_SS != _MIN_SS /* Get disk sector size */
danghuutoan 0:f24ba3a89ec1 4099 if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS || SS(fs) < _MIN_SS)
danghuutoan 0:f24ba3a89ec1 4100 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4101 #endif
danghuutoan 0:f24ba3a89ec1 4102 if (_MULTI_PARTITION && part) {
danghuutoan 0:f24ba3a89ec1 4103 /* Get partition information from partition table in the MBR */
danghuutoan 0:f24ba3a89ec1 4104 if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4105 if (LD_WORD(fs->win + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
danghuutoan 0:f24ba3a89ec1 4106 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
danghuutoan 0:f24ba3a89ec1 4107 if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
danghuutoan 0:f24ba3a89ec1 4108 b_vol = LD_DWORD(tbl + 8); /* Volume start sector */
danghuutoan 0:f24ba3a89ec1 4109 n_vol = LD_DWORD(tbl + 12); /* Volume size */
danghuutoan 0:f24ba3a89ec1 4110 } else {
danghuutoan 0:f24ba3a89ec1 4111 /* Create a partition in this function */
danghuutoan 0:f24ba3a89ec1 4112 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
danghuutoan 0:f24ba3a89ec1 4113 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4114 b_vol = (sfd) ? 0 : 63; /* Volume start sector */
danghuutoan 0:f24ba3a89ec1 4115 n_vol -= b_vol; /* Volume size */
danghuutoan 0:f24ba3a89ec1 4116 }
danghuutoan 0:f24ba3a89ec1 4117
danghuutoan 0:f24ba3a89ec1 4118 if (au & (au - 1)) au = 0;
danghuutoan 0:f24ba3a89ec1 4119 if (!au) { /* AU auto selection */
danghuutoan 0:f24ba3a89ec1 4120 vs = n_vol / (2000 / (SS(fs) / 512));
danghuutoan 0:f24ba3a89ec1 4121 for (i = 0; vs < vst[i]; i++) ;
danghuutoan 0:f24ba3a89ec1 4122 au = cst[i];
danghuutoan 0:f24ba3a89ec1 4123 }
danghuutoan 0:f24ba3a89ec1 4124 if (au >= _MIN_SS) au /= SS(fs); /* Number of sectors per cluster */
danghuutoan 0:f24ba3a89ec1 4125 if (!au) au = 1;
danghuutoan 0:f24ba3a89ec1 4126 if (au > 128) au = 128;
danghuutoan 0:f24ba3a89ec1 4127
danghuutoan 0:f24ba3a89ec1 4128 /* Pre-compute number of clusters and FAT sub-type */
danghuutoan 0:f24ba3a89ec1 4129 n_clst = n_vol / au;
danghuutoan 0:f24ba3a89ec1 4130 fmt = FS_FAT12;
danghuutoan 0:f24ba3a89ec1 4131 if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
danghuutoan 0:f24ba3a89ec1 4132 if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
danghuutoan 0:f24ba3a89ec1 4133
danghuutoan 0:f24ba3a89ec1 4134 /* Determine offset and size of FAT structure */
danghuutoan 0:f24ba3a89ec1 4135 if (fmt == FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 4136 n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
danghuutoan 0:f24ba3a89ec1 4137 n_rsv = 32;
danghuutoan 0:f24ba3a89ec1 4138 n_dir = 0;
danghuutoan 0:f24ba3a89ec1 4139 } else {
danghuutoan 0:f24ba3a89ec1 4140 n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
danghuutoan 0:f24ba3a89ec1 4141 n_fat = (n_fat + SS(fs) - 1) / SS(fs);
danghuutoan 0:f24ba3a89ec1 4142 n_rsv = 1;
danghuutoan 0:f24ba3a89ec1 4143 n_dir = (DWORD)N_ROOTDIR * SZ_DIRE / SS(fs);
danghuutoan 0:f24ba3a89ec1 4144 }
danghuutoan 0:f24ba3a89ec1 4145 b_fat = b_vol + n_rsv; /* FAT area start sector */
danghuutoan 0:f24ba3a89ec1 4146 b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
danghuutoan 0:f24ba3a89ec1 4147 b_data = b_dir + n_dir; /* Data area start sector */
danghuutoan 0:f24ba3a89ec1 4148 if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
danghuutoan 0:f24ba3a89ec1 4149
danghuutoan 0:f24ba3a89ec1 4150 /* Align data start sector to erase block boundary (for flash memory media) */
danghuutoan 0:f24ba3a89ec1 4151 if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
danghuutoan 0:f24ba3a89ec1 4152 n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
danghuutoan 0:f24ba3a89ec1 4153 n = (n - b_data) / N_FATS;
danghuutoan 0:f24ba3a89ec1 4154 if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
danghuutoan 0:f24ba3a89ec1 4155 n_rsv += n;
danghuutoan 0:f24ba3a89ec1 4156 b_fat += n;
danghuutoan 0:f24ba3a89ec1 4157 } else { /* FAT12/16: Expand FAT size */
danghuutoan 0:f24ba3a89ec1 4158 n_fat += n;
danghuutoan 0:f24ba3a89ec1 4159 }
danghuutoan 0:f24ba3a89ec1 4160
danghuutoan 0:f24ba3a89ec1 4161 /* Determine number of clusters and final check of validity of the FAT sub-type */
danghuutoan 0:f24ba3a89ec1 4162 n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
danghuutoan 0:f24ba3a89ec1 4163 if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
danghuutoan 0:f24ba3a89ec1 4164 || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
danghuutoan 0:f24ba3a89ec1 4165 return FR_MKFS_ABORTED;
danghuutoan 0:f24ba3a89ec1 4166
danghuutoan 0:f24ba3a89ec1 4167 /* Determine system ID in the partition table */
danghuutoan 0:f24ba3a89ec1 4168 if (fmt == FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 4169 sys = 0x0C; /* FAT32X */
danghuutoan 0:f24ba3a89ec1 4170 } else {
danghuutoan 0:f24ba3a89ec1 4171 if (fmt == FS_FAT12 && n_vol < 0x10000) {
danghuutoan 0:f24ba3a89ec1 4172 sys = 0x01; /* FAT12(<65536) */
danghuutoan 0:f24ba3a89ec1 4173 } else {
danghuutoan 0:f24ba3a89ec1 4174 sys = (n_vol < 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */
danghuutoan 0:f24ba3a89ec1 4175 }
danghuutoan 0:f24ba3a89ec1 4176 }
danghuutoan 0:f24ba3a89ec1 4177
danghuutoan 0:f24ba3a89ec1 4178 if (_MULTI_PARTITION && part) {
danghuutoan 0:f24ba3a89ec1 4179 /* Update system ID in the partition table */
danghuutoan 0:f24ba3a89ec1 4180 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
danghuutoan 0:f24ba3a89ec1 4181 tbl[4] = sys;
danghuutoan 0:f24ba3a89ec1 4182 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to teh MBR */
danghuutoan 0:f24ba3a89ec1 4183 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4184 md = 0xF8;
danghuutoan 0:f24ba3a89ec1 4185 } else {
danghuutoan 0:f24ba3a89ec1 4186 if (sfd) { /* No partition table (SFD) */
danghuutoan 0:f24ba3a89ec1 4187 md = 0xF0;
danghuutoan 0:f24ba3a89ec1 4188 } else { /* Create partition table (FDISK) */
danghuutoan 0:f24ba3a89ec1 4189 mem_set(fs->win, 0, SS(fs));
danghuutoan 0:f24ba3a89ec1 4190 tbl = fs->win + MBR_Table; /* Create partition table for single partition in the drive */
danghuutoan 0:f24ba3a89ec1 4191 tbl[1] = 1; /* Partition start head */
danghuutoan 0:f24ba3a89ec1 4192 tbl[2] = 1; /* Partition start sector */
danghuutoan 0:f24ba3a89ec1 4193 tbl[3] = 0; /* Partition start cylinder */
danghuutoan 0:f24ba3a89ec1 4194 tbl[4] = sys; /* System type */
danghuutoan 0:f24ba3a89ec1 4195 tbl[5] = 254; /* Partition end head */
danghuutoan 0:f24ba3a89ec1 4196 n = (b_vol + n_vol) / 63 / 255;
danghuutoan 0:f24ba3a89ec1 4197 tbl[6] = (BYTE)(n >> 2 | 63); /* Partition end sector */
danghuutoan 0:f24ba3a89ec1 4198 tbl[7] = (BYTE)n; /* End cylinder */
danghuutoan 0:f24ba3a89ec1 4199 ST_DWORD(tbl + 8, 63); /* Partition start in LBA */
danghuutoan 0:f24ba3a89ec1 4200 ST_DWORD(tbl + 12, n_vol); /* Partition size in LBA */
danghuutoan 0:f24ba3a89ec1 4201 ST_WORD(fs->win + BS_55AA, 0xAA55); /* MBR signature */
danghuutoan 0:f24ba3a89ec1 4202 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR */
danghuutoan 0:f24ba3a89ec1 4203 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4204 md = 0xF8;
danghuutoan 0:f24ba3a89ec1 4205 }
danghuutoan 0:f24ba3a89ec1 4206 }
danghuutoan 0:f24ba3a89ec1 4207
danghuutoan 0:f24ba3a89ec1 4208 /* Create BPB in the VBR */
danghuutoan 0:f24ba3a89ec1 4209 tbl = fs->win; /* Clear sector */
danghuutoan 0:f24ba3a89ec1 4210 mem_set(tbl, 0, SS(fs));
danghuutoan 0:f24ba3a89ec1 4211 mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
danghuutoan 0:f24ba3a89ec1 4212 i = SS(fs); /* Sector size */
danghuutoan 0:f24ba3a89ec1 4213 ST_WORD(tbl + BPB_BytsPerSec, i);
danghuutoan 0:f24ba3a89ec1 4214 tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
danghuutoan 0:f24ba3a89ec1 4215 ST_WORD(tbl + BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
danghuutoan 0:f24ba3a89ec1 4216 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
danghuutoan 0:f24ba3a89ec1 4217 i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of root directory entries */
danghuutoan 0:f24ba3a89ec1 4218 ST_WORD(tbl + BPB_RootEntCnt, i);
danghuutoan 0:f24ba3a89ec1 4219 if (n_vol < 0x10000) { /* Number of total sectors */
danghuutoan 0:f24ba3a89ec1 4220 ST_WORD(tbl + BPB_TotSec16, n_vol);
danghuutoan 0:f24ba3a89ec1 4221 } else {
danghuutoan 0:f24ba3a89ec1 4222 ST_DWORD(tbl + BPB_TotSec32, n_vol);
danghuutoan 0:f24ba3a89ec1 4223 }
danghuutoan 0:f24ba3a89ec1 4224 tbl[BPB_Media] = md; /* Media descriptor */
danghuutoan 0:f24ba3a89ec1 4225 ST_WORD(tbl + BPB_SecPerTrk, 63); /* Number of sectors per track */
danghuutoan 0:f24ba3a89ec1 4226 ST_WORD(tbl + BPB_NumHeads, 255); /* Number of heads */
danghuutoan 0:f24ba3a89ec1 4227 ST_DWORD(tbl + BPB_HiddSec, b_vol); /* Hidden sectors */
danghuutoan 0:f24ba3a89ec1 4228 n = GET_FATTIME(); /* Use current time as VSN */
danghuutoan 0:f24ba3a89ec1 4229 if (fmt == FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 4230 ST_DWORD(tbl + BS_VolID32, n); /* VSN */
danghuutoan 0:f24ba3a89ec1 4231 ST_DWORD(tbl + BPB_FATSz32, n_fat); /* Number of sectors per FAT */
danghuutoan 0:f24ba3a89ec1 4232 ST_DWORD(tbl + BPB_RootClus, 2); /* Root directory start cluster (2) */
danghuutoan 0:f24ba3a89ec1 4233 ST_WORD(tbl + BPB_FSInfo, 1); /* FSINFO record offset (VBR + 1) */
danghuutoan 0:f24ba3a89ec1 4234 ST_WORD(tbl + BPB_BkBootSec, 6); /* Backup boot record offset (VBR + 6) */
danghuutoan 0:f24ba3a89ec1 4235 tbl[BS_DrvNum32] = 0x80; /* Drive number */
danghuutoan 0:f24ba3a89ec1 4236 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
danghuutoan 0:f24ba3a89ec1 4237 mem_cpy(tbl + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
danghuutoan 0:f24ba3a89ec1 4238 } else {
danghuutoan 0:f24ba3a89ec1 4239 ST_DWORD(tbl + BS_VolID, n); /* VSN */
danghuutoan 0:f24ba3a89ec1 4240 ST_WORD(tbl + BPB_FATSz16, n_fat); /* Number of sectors per FAT */
danghuutoan 0:f24ba3a89ec1 4241 tbl[BS_DrvNum] = 0x80; /* Drive number */
danghuutoan 0:f24ba3a89ec1 4242 tbl[BS_BootSig] = 0x29; /* Extended boot signature */
danghuutoan 0:f24ba3a89ec1 4243 mem_cpy(tbl + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
danghuutoan 0:f24ba3a89ec1 4244 }
danghuutoan 0:f24ba3a89ec1 4245 ST_WORD(tbl + BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
danghuutoan 0:f24ba3a89ec1 4246 if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
danghuutoan 0:f24ba3a89ec1 4247 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4248 if (fmt == FS_FAT32) /* Write it to the backup VBR if needed (VBR + 6) */
danghuutoan 0:f24ba3a89ec1 4249 disk_write(pdrv, tbl, b_vol + 6, 1);
danghuutoan 0:f24ba3a89ec1 4250
danghuutoan 0:f24ba3a89ec1 4251 /* Initialize FAT area */
danghuutoan 0:f24ba3a89ec1 4252 wsect = b_fat;
danghuutoan 0:f24ba3a89ec1 4253 for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
danghuutoan 0:f24ba3a89ec1 4254 mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
danghuutoan 0:f24ba3a89ec1 4255 n = md; /* Media descriptor byte */
danghuutoan 0:f24ba3a89ec1 4256 if (fmt != FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 4257 n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
danghuutoan 0:f24ba3a89ec1 4258 ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT12/16) */
danghuutoan 0:f24ba3a89ec1 4259 } else {
danghuutoan 0:f24ba3a89ec1 4260 n |= 0xFFFFFF00;
danghuutoan 0:f24ba3a89ec1 4261 ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT32) */
danghuutoan 0:f24ba3a89ec1 4262 ST_DWORD(tbl + 4, 0xFFFFFFFF);
danghuutoan 0:f24ba3a89ec1 4263 ST_DWORD(tbl + 8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */
danghuutoan 0:f24ba3a89ec1 4264 }
danghuutoan 0:f24ba3a89ec1 4265 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 4266 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4267 mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
danghuutoan 0:f24ba3a89ec1 4268 for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
danghuutoan 0:f24ba3a89ec1 4269 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 4270 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4271 }
danghuutoan 0:f24ba3a89ec1 4272 }
danghuutoan 0:f24ba3a89ec1 4273
danghuutoan 0:f24ba3a89ec1 4274 /* Initialize root directory */
danghuutoan 0:f24ba3a89ec1 4275 i = (fmt == FS_FAT32) ? au : (UINT)n_dir;
danghuutoan 0:f24ba3a89ec1 4276 do {
danghuutoan 0:f24ba3a89ec1 4277 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
danghuutoan 0:f24ba3a89ec1 4278 return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4279 } while (--i);
danghuutoan 0:f24ba3a89ec1 4280
danghuutoan 0:f24ba3a89ec1 4281 #if _USE_TRIM /* Erase data area if needed */
danghuutoan 0:f24ba3a89ec1 4282 {
danghuutoan 0:f24ba3a89ec1 4283 eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
danghuutoan 0:f24ba3a89ec1 4284 disk_ioctl(pdrv, CTRL_TRIM, eb);
danghuutoan 0:f24ba3a89ec1 4285 }
danghuutoan 0:f24ba3a89ec1 4286 #endif
danghuutoan 0:f24ba3a89ec1 4287
danghuutoan 0:f24ba3a89ec1 4288 /* Create FSINFO if needed */
danghuutoan 0:f24ba3a89ec1 4289 if (fmt == FS_FAT32) {
danghuutoan 0:f24ba3a89ec1 4290 ST_DWORD(tbl + FSI_LeadSig, 0x41615252);
danghuutoan 0:f24ba3a89ec1 4291 ST_DWORD(tbl + FSI_StrucSig, 0x61417272);
danghuutoan 0:f24ba3a89ec1 4292 ST_DWORD(tbl + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
danghuutoan 0:f24ba3a89ec1 4293 ST_DWORD(tbl + FSI_Nxt_Free, 2); /* Last allocated cluster# */
danghuutoan 0:f24ba3a89ec1 4294 ST_WORD(tbl + BS_55AA, 0xAA55);
danghuutoan 0:f24ba3a89ec1 4295 disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR + 1) */
danghuutoan 0:f24ba3a89ec1 4296 disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR + 7) */
danghuutoan 0:f24ba3a89ec1 4297 }
danghuutoan 0:f24ba3a89ec1 4298
danghuutoan 0:f24ba3a89ec1 4299 return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4300 }
danghuutoan 0:f24ba3a89ec1 4301
danghuutoan 0:f24ba3a89ec1 4302
danghuutoan 0:f24ba3a89ec1 4303
danghuutoan 0:f24ba3a89ec1 4304 #if _MULTI_PARTITION
danghuutoan 0:f24ba3a89ec1 4305 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4306 /* Create partition table on the physical drive */
danghuutoan 0:f24ba3a89ec1 4307 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4308
danghuutoan 0:f24ba3a89ec1 4309 FRESULT f_fdisk (
danghuutoan 0:f24ba3a89ec1 4310 BYTE pdrv, /* Physical drive number */
danghuutoan 0:f24ba3a89ec1 4311 const DWORD szt[], /* Pointer to the size table for each partitions */
danghuutoan 0:f24ba3a89ec1 4312 void* work /* Pointer to the working buffer */
danghuutoan 0:f24ba3a89ec1 4313 )
danghuutoan 0:f24ba3a89ec1 4314 {
danghuutoan 0:f24ba3a89ec1 4315 UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
danghuutoan 0:f24ba3a89ec1 4316 BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
danghuutoan 0:f24ba3a89ec1 4317 DSTATUS stat;
danghuutoan 0:f24ba3a89ec1 4318 DWORD sz_disk, sz_part, s_part;
danghuutoan 0:f24ba3a89ec1 4319
danghuutoan 0:f24ba3a89ec1 4320
danghuutoan 0:f24ba3a89ec1 4321 stat = disk_initialize(pdrv);
danghuutoan 0:f24ba3a89ec1 4322 if (stat & STA_NOINIT) return FR_NOT_READY;
danghuutoan 0:f24ba3a89ec1 4323 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
danghuutoan 0:f24ba3a89ec1 4324 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
danghuutoan 0:f24ba3a89ec1 4325
danghuutoan 0:f24ba3a89ec1 4326 /* Determine CHS in the table regardless of the drive geometry */
danghuutoan 0:f24ba3a89ec1 4327 for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
danghuutoan 0:f24ba3a89ec1 4328 if (n == 256) n--;
danghuutoan 0:f24ba3a89ec1 4329 e_hd = n - 1;
danghuutoan 0:f24ba3a89ec1 4330 sz_cyl = 63 * n;
danghuutoan 0:f24ba3a89ec1 4331 tot_cyl = sz_disk / sz_cyl;
danghuutoan 0:f24ba3a89ec1 4332
danghuutoan 0:f24ba3a89ec1 4333 /* Create partition table */
danghuutoan 0:f24ba3a89ec1 4334 mem_set(buf, 0, _MAX_SS);
danghuutoan 0:f24ba3a89ec1 4335 p = buf + MBR_Table; b_cyl = 0;
danghuutoan 0:f24ba3a89ec1 4336 for (i = 0; i < 4; i++, p += SZ_PTE) {
danghuutoan 0:f24ba3a89ec1 4337 p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
danghuutoan 0:f24ba3a89ec1 4338 if (!p_cyl) continue;
danghuutoan 0:f24ba3a89ec1 4339 s_part = (DWORD)sz_cyl * b_cyl;
danghuutoan 0:f24ba3a89ec1 4340 sz_part = (DWORD)sz_cyl * p_cyl;
danghuutoan 0:f24ba3a89ec1 4341 if (i == 0) { /* Exclude first track of cylinder 0 */
danghuutoan 0:f24ba3a89ec1 4342 s_hd = 1;
danghuutoan 0:f24ba3a89ec1 4343 s_part += 63; sz_part -= 63;
danghuutoan 0:f24ba3a89ec1 4344 } else {
danghuutoan 0:f24ba3a89ec1 4345 s_hd = 0;
danghuutoan 0:f24ba3a89ec1 4346 }
danghuutoan 0:f24ba3a89ec1 4347 e_cyl = b_cyl + p_cyl - 1;
danghuutoan 0:f24ba3a89ec1 4348 if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
danghuutoan 0:f24ba3a89ec1 4349
danghuutoan 0:f24ba3a89ec1 4350 /* Set partition table */
danghuutoan 0:f24ba3a89ec1 4351 p[1] = s_hd; /* Start head */
danghuutoan 0:f24ba3a89ec1 4352 p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
danghuutoan 0:f24ba3a89ec1 4353 p[3] = (BYTE)b_cyl; /* Start cylinder */
danghuutoan 0:f24ba3a89ec1 4354 p[4] = 0x06; /* System type (temporary setting) */
danghuutoan 0:f24ba3a89ec1 4355 p[5] = e_hd; /* End head */
danghuutoan 0:f24ba3a89ec1 4356 p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
danghuutoan 0:f24ba3a89ec1 4357 p[7] = (BYTE)e_cyl; /* End cylinder */
danghuutoan 0:f24ba3a89ec1 4358 ST_DWORD(p + 8, s_part); /* Start sector in LBA */
danghuutoan 0:f24ba3a89ec1 4359 ST_DWORD(p + 12, sz_part); /* Partition size */
danghuutoan 0:f24ba3a89ec1 4360
danghuutoan 0:f24ba3a89ec1 4361 /* Next partition */
danghuutoan 0:f24ba3a89ec1 4362 b_cyl += p_cyl;
danghuutoan 0:f24ba3a89ec1 4363 }
danghuutoan 0:f24ba3a89ec1 4364 ST_WORD(p, 0xAA55);
danghuutoan 0:f24ba3a89ec1 4365
danghuutoan 0:f24ba3a89ec1 4366 /* Write it to the MBR */
danghuutoan 0:f24ba3a89ec1 4367 return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
danghuutoan 0:f24ba3a89ec1 4368 }
danghuutoan 0:f24ba3a89ec1 4369
danghuutoan 0:f24ba3a89ec1 4370
danghuutoan 0:f24ba3a89ec1 4371 #endif /* _MULTI_PARTITION */
danghuutoan 0:f24ba3a89ec1 4372 #endif /* _USE_MKFS && !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 4373
danghuutoan 0:f24ba3a89ec1 4374
danghuutoan 0:f24ba3a89ec1 4375
danghuutoan 0:f24ba3a89ec1 4376
danghuutoan 0:f24ba3a89ec1 4377 #if _USE_STRFUNC
danghuutoan 0:f24ba3a89ec1 4378 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4379 /* Get a string from the file */
danghuutoan 0:f24ba3a89ec1 4380 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4381
danghuutoan 0:f24ba3a89ec1 4382 TCHAR* f_gets (
danghuutoan 0:f24ba3a89ec1 4383 TCHAR* buff, /* Pointer to the string buffer to read */
danghuutoan 0:f24ba3a89ec1 4384 int len, /* Size of string buffer (characters) */
danghuutoan 0:f24ba3a89ec1 4385 FIL* fp /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 4386 )
danghuutoan 0:f24ba3a89ec1 4387 {
danghuutoan 0:f24ba3a89ec1 4388 int n = 0;
danghuutoan 0:f24ba3a89ec1 4389 TCHAR c, *p = buff;
danghuutoan 0:f24ba3a89ec1 4390 BYTE s[2];
danghuutoan 0:f24ba3a89ec1 4391 UINT rc;
danghuutoan 0:f24ba3a89ec1 4392
danghuutoan 0:f24ba3a89ec1 4393
danghuutoan 0:f24ba3a89ec1 4394 while (n < len - 1) { /* Read characters until buffer gets filled */
danghuutoan 0:f24ba3a89ec1 4395 #if _USE_LFN && _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 4396 #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
danghuutoan 0:f24ba3a89ec1 4397 f_read(fp, s, 1, &rc);
danghuutoan 0:f24ba3a89ec1 4398 if (rc != 1) break;
danghuutoan 0:f24ba3a89ec1 4399 c = s[0];
danghuutoan 0:f24ba3a89ec1 4400 if (c >= 0x80) {
danghuutoan 0:f24ba3a89ec1 4401 if (c < 0xC0) continue; /* Skip stray trailer */
danghuutoan 0:f24ba3a89ec1 4402 if (c < 0xE0) { /* Two-byte sequence */
danghuutoan 0:f24ba3a89ec1 4403 f_read(fp, s, 1, &rc);
danghuutoan 0:f24ba3a89ec1 4404 if (rc != 1) break;
danghuutoan 0:f24ba3a89ec1 4405 c = (c & 0x1F) << 6 | (s[0] & 0x3F);
danghuutoan 0:f24ba3a89ec1 4406 if (c < 0x80) c = '?';
danghuutoan 0:f24ba3a89ec1 4407 } else {
danghuutoan 0:f24ba3a89ec1 4408 if (c < 0xF0) { /* Three-byte sequence */
danghuutoan 0:f24ba3a89ec1 4409 f_read(fp, s, 2, &rc);
danghuutoan 0:f24ba3a89ec1 4410 if (rc != 2) break;
danghuutoan 0:f24ba3a89ec1 4411 c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);
danghuutoan 0:f24ba3a89ec1 4412 if (c < 0x800) c = '?';
danghuutoan 0:f24ba3a89ec1 4413 } else { /* Reject four-byte sequence */
danghuutoan 0:f24ba3a89ec1 4414 c = '?';
danghuutoan 0:f24ba3a89ec1 4415 }
danghuutoan 0:f24ba3a89ec1 4416 }
danghuutoan 0:f24ba3a89ec1 4417 }
danghuutoan 0:f24ba3a89ec1 4418 #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
danghuutoan 0:f24ba3a89ec1 4419 f_read(fp, s, 2, &rc);
danghuutoan 0:f24ba3a89ec1 4420 if (rc != 2) break;
danghuutoan 0:f24ba3a89ec1 4421 c = s[1] + (s[0] << 8);
danghuutoan 0:f24ba3a89ec1 4422 #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
danghuutoan 0:f24ba3a89ec1 4423 f_read(fp, s, 2, &rc);
danghuutoan 0:f24ba3a89ec1 4424 if (rc != 2) break;
danghuutoan 0:f24ba3a89ec1 4425 c = s[0] + (s[1] << 8);
danghuutoan 0:f24ba3a89ec1 4426 #else /* Read a character in ANSI/OEM */
danghuutoan 0:f24ba3a89ec1 4427 f_read(fp, s, 1, &rc);
danghuutoan 0:f24ba3a89ec1 4428 if (rc != 1) break;
danghuutoan 0:f24ba3a89ec1 4429 c = s[0];
danghuutoan 0:f24ba3a89ec1 4430 if (IsDBCS1(c)) {
danghuutoan 0:f24ba3a89ec1 4431 f_read(fp, s, 1, &rc);
danghuutoan 0:f24ba3a89ec1 4432 if (rc != 1) break;
danghuutoan 0:f24ba3a89ec1 4433 c = (c << 8) + s[0];
danghuutoan 0:f24ba3a89ec1 4434 }
danghuutoan 0:f24ba3a89ec1 4435 c = ff_convert(c, 1); /* OEM -> Unicode */
danghuutoan 0:f24ba3a89ec1 4436 if (!c) c = '?';
danghuutoan 0:f24ba3a89ec1 4437 #endif
danghuutoan 0:f24ba3a89ec1 4438 #else /* Read a character without conversion */
danghuutoan 0:f24ba3a89ec1 4439 f_read(fp, s, 1, &rc);
danghuutoan 0:f24ba3a89ec1 4440 if (rc != 1) break;
danghuutoan 0:f24ba3a89ec1 4441 c = s[0];
danghuutoan 0:f24ba3a89ec1 4442 #endif
danghuutoan 0:f24ba3a89ec1 4443 if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */
danghuutoan 0:f24ba3a89ec1 4444 *p++ = c;
danghuutoan 0:f24ba3a89ec1 4445 n++;
danghuutoan 0:f24ba3a89ec1 4446 if (c == '\n') break; /* Break on EOL */
danghuutoan 0:f24ba3a89ec1 4447 }
danghuutoan 0:f24ba3a89ec1 4448 *p = 0;
danghuutoan 0:f24ba3a89ec1 4449 return n ? buff : 0; /* When no data read (eof or error), return with error. */
danghuutoan 0:f24ba3a89ec1 4450 }
danghuutoan 0:f24ba3a89ec1 4451
danghuutoan 0:f24ba3a89ec1 4452
danghuutoan 0:f24ba3a89ec1 4453
danghuutoan 0:f24ba3a89ec1 4454
danghuutoan 0:f24ba3a89ec1 4455 #if !_FS_READONLY
danghuutoan 0:f24ba3a89ec1 4456 #include <stdarg.h>
danghuutoan 0:f24ba3a89ec1 4457 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4458 /* Put a character to the file */
danghuutoan 0:f24ba3a89ec1 4459 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4460
danghuutoan 0:f24ba3a89ec1 4461 typedef struct {
danghuutoan 0:f24ba3a89ec1 4462 FIL* fp;
danghuutoan 0:f24ba3a89ec1 4463 int idx, nchr;
danghuutoan 0:f24ba3a89ec1 4464 BYTE buf[64];
danghuutoan 0:f24ba3a89ec1 4465 } putbuff;
danghuutoan 0:f24ba3a89ec1 4466
danghuutoan 0:f24ba3a89ec1 4467
danghuutoan 0:f24ba3a89ec1 4468 static
danghuutoan 0:f24ba3a89ec1 4469 void putc_bfd (
danghuutoan 0:f24ba3a89ec1 4470 putbuff* pb,
danghuutoan 0:f24ba3a89ec1 4471 TCHAR c
danghuutoan 0:f24ba3a89ec1 4472 )
danghuutoan 0:f24ba3a89ec1 4473 {
danghuutoan 0:f24ba3a89ec1 4474 UINT bw;
danghuutoan 0:f24ba3a89ec1 4475 int i;
danghuutoan 0:f24ba3a89ec1 4476
danghuutoan 0:f24ba3a89ec1 4477
danghuutoan 0:f24ba3a89ec1 4478 if (_USE_STRFUNC == 2 && c == '\n') /* LF -> CRLF conversion */
danghuutoan 0:f24ba3a89ec1 4479 putc_bfd(pb, '\r');
danghuutoan 0:f24ba3a89ec1 4480
danghuutoan 0:f24ba3a89ec1 4481 i = pb->idx; /* Buffer write index (-1:error) */
danghuutoan 0:f24ba3a89ec1 4482 if (i < 0) return;
danghuutoan 0:f24ba3a89ec1 4483
danghuutoan 0:f24ba3a89ec1 4484 #if _USE_LFN && _LFN_UNICODE
danghuutoan 0:f24ba3a89ec1 4485 #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
danghuutoan 0:f24ba3a89ec1 4486 if (c < 0x80) { /* 7-bit */
danghuutoan 0:f24ba3a89ec1 4487 pb->buf[i++] = (BYTE)c;
danghuutoan 0:f24ba3a89ec1 4488 } else {
danghuutoan 0:f24ba3a89ec1 4489 if (c < 0x800) { /* 11-bit */
danghuutoan 0:f24ba3a89ec1 4490 pb->buf[i++] = (BYTE)(0xC0 | c >> 6);
danghuutoan 0:f24ba3a89ec1 4491 } else { /* 16-bit */
danghuutoan 0:f24ba3a89ec1 4492 pb->buf[i++] = (BYTE)(0xE0 | c >> 12);
danghuutoan 0:f24ba3a89ec1 4493 pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));
danghuutoan 0:f24ba3a89ec1 4494 }
danghuutoan 0:f24ba3a89ec1 4495 pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));
danghuutoan 0:f24ba3a89ec1 4496 }
danghuutoan 0:f24ba3a89ec1 4497 #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
danghuutoan 0:f24ba3a89ec1 4498 pb->buf[i++] = (BYTE)(c >> 8);
danghuutoan 0:f24ba3a89ec1 4499 pb->buf[i++] = (BYTE)c;
danghuutoan 0:f24ba3a89ec1 4500 #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
danghuutoan 0:f24ba3a89ec1 4501 pb->buf[i++] = (BYTE)c;
danghuutoan 0:f24ba3a89ec1 4502 pb->buf[i++] = (BYTE)(c >> 8);
danghuutoan 0:f24ba3a89ec1 4503 #else /* Write a character in ANSI/OEM */
danghuutoan 0:f24ba3a89ec1 4504 c = ff_convert(c, 0); /* Unicode -> OEM */
danghuutoan 0:f24ba3a89ec1 4505 if (!c) c = '?';
danghuutoan 0:f24ba3a89ec1 4506 if (c >= 0x100)
danghuutoan 0:f24ba3a89ec1 4507 pb->buf[i++] = (BYTE)(c >> 8);
danghuutoan 0:f24ba3a89ec1 4508 pb->buf[i++] = (BYTE)c;
danghuutoan 0:f24ba3a89ec1 4509 #endif
danghuutoan 0:f24ba3a89ec1 4510 #else /* Write a character without conversion */
danghuutoan 0:f24ba3a89ec1 4511 pb->buf[i++] = (BYTE)c;
danghuutoan 0:f24ba3a89ec1 4512 #endif
danghuutoan 0:f24ba3a89ec1 4513
danghuutoan 0:f24ba3a89ec1 4514 if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */
danghuutoan 0:f24ba3a89ec1 4515 f_write(pb->fp, pb->buf, (UINT)i, &bw);
danghuutoan 0:f24ba3a89ec1 4516 i = (bw == (UINT)i) ? 0 : -1;
danghuutoan 0:f24ba3a89ec1 4517 }
danghuutoan 0:f24ba3a89ec1 4518 pb->idx = i;
danghuutoan 0:f24ba3a89ec1 4519 pb->nchr++;
danghuutoan 0:f24ba3a89ec1 4520 }
danghuutoan 0:f24ba3a89ec1 4521
danghuutoan 0:f24ba3a89ec1 4522
danghuutoan 0:f24ba3a89ec1 4523
danghuutoan 0:f24ba3a89ec1 4524 int f_putc (
danghuutoan 0:f24ba3a89ec1 4525 TCHAR c, /* A character to be output */
danghuutoan 0:f24ba3a89ec1 4526 FIL* fp /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 4527 )
danghuutoan 0:f24ba3a89ec1 4528 {
danghuutoan 0:f24ba3a89ec1 4529 putbuff pb;
danghuutoan 0:f24ba3a89ec1 4530 UINT nw;
danghuutoan 0:f24ba3a89ec1 4531
danghuutoan 0:f24ba3a89ec1 4532
danghuutoan 0:f24ba3a89ec1 4533 pb.fp = fp; /* Initialize output buffer */
danghuutoan 0:f24ba3a89ec1 4534 pb.nchr = pb.idx = 0;
danghuutoan 0:f24ba3a89ec1 4535
danghuutoan 0:f24ba3a89ec1 4536 putc_bfd(&pb, c); /* Put a character */
danghuutoan 0:f24ba3a89ec1 4537
danghuutoan 0:f24ba3a89ec1 4538 if ( pb.idx >= 0 /* Flush buffered characters to the file */
danghuutoan 0:f24ba3a89ec1 4539 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
danghuutoan 0:f24ba3a89ec1 4540 && (UINT)pb.idx == nw) return pb.nchr;
danghuutoan 0:f24ba3a89ec1 4541 return EOF;
danghuutoan 0:f24ba3a89ec1 4542 }
danghuutoan 0:f24ba3a89ec1 4543
danghuutoan 0:f24ba3a89ec1 4544
danghuutoan 0:f24ba3a89ec1 4545
danghuutoan 0:f24ba3a89ec1 4546
danghuutoan 0:f24ba3a89ec1 4547 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4548 /* Put a string to the file */
danghuutoan 0:f24ba3a89ec1 4549 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4550
danghuutoan 0:f24ba3a89ec1 4551 int f_puts (
danghuutoan 0:f24ba3a89ec1 4552 const TCHAR* str, /* Pointer to the string to be output */
danghuutoan 0:f24ba3a89ec1 4553 FIL* fp /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 4554 )
danghuutoan 0:f24ba3a89ec1 4555 {
danghuutoan 0:f24ba3a89ec1 4556 putbuff pb;
danghuutoan 0:f24ba3a89ec1 4557 UINT nw;
danghuutoan 0:f24ba3a89ec1 4558
danghuutoan 0:f24ba3a89ec1 4559
danghuutoan 0:f24ba3a89ec1 4560 pb.fp = fp; /* Initialize output buffer */
danghuutoan 0:f24ba3a89ec1 4561 pb.nchr = pb.idx = 0;
danghuutoan 0:f24ba3a89ec1 4562
danghuutoan 0:f24ba3a89ec1 4563 while (*str) /* Put the string */
danghuutoan 0:f24ba3a89ec1 4564 putc_bfd(&pb, *str++);
danghuutoan 0:f24ba3a89ec1 4565
danghuutoan 0:f24ba3a89ec1 4566 if ( pb.idx >= 0 /* Flush buffered characters to the file */
danghuutoan 0:f24ba3a89ec1 4567 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
danghuutoan 0:f24ba3a89ec1 4568 && (UINT)pb.idx == nw) return pb.nchr;
danghuutoan 0:f24ba3a89ec1 4569 return EOF;
danghuutoan 0:f24ba3a89ec1 4570 }
danghuutoan 0:f24ba3a89ec1 4571
danghuutoan 0:f24ba3a89ec1 4572
danghuutoan 0:f24ba3a89ec1 4573
danghuutoan 0:f24ba3a89ec1 4574
danghuutoan 0:f24ba3a89ec1 4575 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4576 /* Put a formatted string to the file */
danghuutoan 0:f24ba3a89ec1 4577 /*-----------------------------------------------------------------------*/
danghuutoan 0:f24ba3a89ec1 4578
danghuutoan 0:f24ba3a89ec1 4579 int f_printf (
danghuutoan 0:f24ba3a89ec1 4580 FIL* fp, /* Pointer to the file object */
danghuutoan 0:f24ba3a89ec1 4581 const TCHAR* fmt, /* Pointer to the format string */
danghuutoan 0:f24ba3a89ec1 4582 ... /* Optional arguments... */
danghuutoan 0:f24ba3a89ec1 4583 )
danghuutoan 0:f24ba3a89ec1 4584 {
danghuutoan 0:f24ba3a89ec1 4585 va_list arp;
danghuutoan 0:f24ba3a89ec1 4586 BYTE f, r;
danghuutoan 0:f24ba3a89ec1 4587 UINT nw, i, j, w;
danghuutoan 0:f24ba3a89ec1 4588 DWORD v;
danghuutoan 0:f24ba3a89ec1 4589 TCHAR c, d, s[16], *p;
danghuutoan 0:f24ba3a89ec1 4590 putbuff pb;
danghuutoan 0:f24ba3a89ec1 4591
danghuutoan 0:f24ba3a89ec1 4592
danghuutoan 0:f24ba3a89ec1 4593 pb.fp = fp; /* Initialize output buffer */
danghuutoan 0:f24ba3a89ec1 4594 pb.nchr = pb.idx = 0;
danghuutoan 0:f24ba3a89ec1 4595
danghuutoan 0:f24ba3a89ec1 4596 va_start(arp, fmt);
danghuutoan 0:f24ba3a89ec1 4597
danghuutoan 0:f24ba3a89ec1 4598 for (;;) {
danghuutoan 0:f24ba3a89ec1 4599 c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4600 if (c == 0) break; /* End of string */
danghuutoan 0:f24ba3a89ec1 4601 if (c != '%') { /* Non escape character */
danghuutoan 0:f24ba3a89ec1 4602 putc_bfd(&pb, c);
danghuutoan 0:f24ba3a89ec1 4603 continue;
danghuutoan 0:f24ba3a89ec1 4604 }
danghuutoan 0:f24ba3a89ec1 4605 w = f = 0;
danghuutoan 0:f24ba3a89ec1 4606 c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4607 if (c == '0') { /* Flag: '0' padding */
danghuutoan 0:f24ba3a89ec1 4608 f = 1; c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4609 } else {
danghuutoan 0:f24ba3a89ec1 4610 if (c == '-') { /* Flag: left justified */
danghuutoan 0:f24ba3a89ec1 4611 f = 2; c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4612 }
danghuutoan 0:f24ba3a89ec1 4613 }
danghuutoan 0:f24ba3a89ec1 4614 while (IsDigit(c)) { /* Precision */
danghuutoan 0:f24ba3a89ec1 4615 w = w * 10 + c - '0';
danghuutoan 0:f24ba3a89ec1 4616 c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4617 }
danghuutoan 0:f24ba3a89ec1 4618 if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
danghuutoan 0:f24ba3a89ec1 4619 f |= 4; c = *fmt++;
danghuutoan 0:f24ba3a89ec1 4620 }
danghuutoan 0:f24ba3a89ec1 4621 if (!c) break;
danghuutoan 0:f24ba3a89ec1 4622 d = c;
danghuutoan 0:f24ba3a89ec1 4623 if (IsLower(d)) d -= 0x20;
danghuutoan 0:f24ba3a89ec1 4624 switch (d) { /* Type is... */
danghuutoan 0:f24ba3a89ec1 4625 case 'S' : /* String */
danghuutoan 0:f24ba3a89ec1 4626 p = va_arg(arp, TCHAR*);
danghuutoan 0:f24ba3a89ec1 4627 for (j = 0; p[j]; j++) ;
danghuutoan 0:f24ba3a89ec1 4628 if (!(f & 2)) {
danghuutoan 0:f24ba3a89ec1 4629 while (j++ < w) putc_bfd(&pb, ' ');
danghuutoan 0:f24ba3a89ec1 4630 }
danghuutoan 0:f24ba3a89ec1 4631 while (*p) putc_bfd(&pb, *p++);
danghuutoan 0:f24ba3a89ec1 4632 while (j++ < w) putc_bfd(&pb, ' ');
danghuutoan 0:f24ba3a89ec1 4633 continue;
danghuutoan 0:f24ba3a89ec1 4634 case 'C' : /* Character */
danghuutoan 0:f24ba3a89ec1 4635 putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
danghuutoan 0:f24ba3a89ec1 4636 case 'B' : /* Binary */
danghuutoan 0:f24ba3a89ec1 4637 r = 2; break;
danghuutoan 0:f24ba3a89ec1 4638 case 'O' : /* Octal */
danghuutoan 0:f24ba3a89ec1 4639 r = 8; break;
danghuutoan 0:f24ba3a89ec1 4640 case 'D' : /* Signed decimal */
danghuutoan 0:f24ba3a89ec1 4641 case 'U' : /* Unsigned decimal */
danghuutoan 0:f24ba3a89ec1 4642 r = 10; break;
danghuutoan 0:f24ba3a89ec1 4643 case 'X' : /* Hexdecimal */
danghuutoan 0:f24ba3a89ec1 4644 r = 16; break;
danghuutoan 0:f24ba3a89ec1 4645 default: /* Unknown type (pass-through) */
danghuutoan 0:f24ba3a89ec1 4646 putc_bfd(&pb, c); continue;
danghuutoan 0:f24ba3a89ec1 4647 }
danghuutoan 0:f24ba3a89ec1 4648
danghuutoan 0:f24ba3a89ec1 4649 /* Get an argument and put it in numeral */
danghuutoan 0:f24ba3a89ec1 4650 v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
danghuutoan 0:f24ba3a89ec1 4651 if (d == 'D' && (v & 0x80000000)) {
danghuutoan 0:f24ba3a89ec1 4652 v = 0 - v;
danghuutoan 0:f24ba3a89ec1 4653 f |= 8;
danghuutoan 0:f24ba3a89ec1 4654 }
danghuutoan 0:f24ba3a89ec1 4655 i = 0;
danghuutoan 0:f24ba3a89ec1 4656 do {
danghuutoan 0:f24ba3a89ec1 4657 d = (TCHAR)(v % r); v /= r;
danghuutoan 0:f24ba3a89ec1 4658 if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
danghuutoan 0:f24ba3a89ec1 4659 s[i++] = d + '0';
danghuutoan 0:f24ba3a89ec1 4660 } while (v && i < sizeof s / sizeof s[0]);
danghuutoan 0:f24ba3a89ec1 4661 if (f & 8) s[i++] = '-';
danghuutoan 0:f24ba3a89ec1 4662 j = i; d = (f & 1) ? '0' : ' ';
danghuutoan 0:f24ba3a89ec1 4663 while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
danghuutoan 0:f24ba3a89ec1 4664 do putc_bfd(&pb, s[--i]); while (i);
danghuutoan 0:f24ba3a89ec1 4665 while (j++ < w) putc_bfd(&pb, d);
danghuutoan 0:f24ba3a89ec1 4666 }
danghuutoan 0:f24ba3a89ec1 4667
danghuutoan 0:f24ba3a89ec1 4668 va_end(arp);
danghuutoan 0:f24ba3a89ec1 4669
danghuutoan 0:f24ba3a89ec1 4670 if ( pb.idx >= 0 /* Flush buffered characters to the file */
danghuutoan 0:f24ba3a89ec1 4671 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
danghuutoan 0:f24ba3a89ec1 4672 && (UINT)pb.idx == nw) return pb.nchr;
danghuutoan 0:f24ba3a89ec1 4673 return EOF;
danghuutoan 0:f24ba3a89ec1 4674 }
danghuutoan 0:f24ba3a89ec1 4675
danghuutoan 0:f24ba3a89ec1 4676 #endif /* !_FS_READONLY */
danghuutoan 0:f24ba3a89ec1 4677 #endif /* _USE_STRFUNC */
danghuutoan 0:f24ba3a89ec1 4678