PES4 / Mbed OS Queue_02
Committer:
demayer
Date:
Sat Apr 11 08:15:48 2020 +0000
Revision:
1:b36bbc1c6d27
Parent:
0:6bf0743ece18
IMU-library in .h und .cpp file aufgeteilt

Who changed what in which revision?

UserRevisionLine numberNew contents of line
demayer 0:6bf0743ece18 1 /*----------------------------------------------------------------------------/
demayer 0:6bf0743ece18 2 / FatFs - FAT file system module R0.11a (C)ChaN, 2015 /
demayer 0:6bf0743ece18 3 /-----------------------------------------------------------------------------/
demayer 0:6bf0743ece18 4 / FatFs module is a free software that opened under license policy of
demayer 0:6bf0743ece18 5 / following conditions.
demayer 0:6bf0743ece18 6 /
demayer 0:6bf0743ece18 7 / Copyright (C) 2015, ChaN, all right reserved.
demayer 0:6bf0743ece18 8 /
demayer 0:6bf0743ece18 9 / 1. Redistributions of source code must retain the above copyright notice,
demayer 0:6bf0743ece18 10 / this condition and the following disclaimer.
demayer 0:6bf0743ece18 11 /
demayer 0:6bf0743ece18 12 / This software is provided by the copyright holder and contributors "AS IS"
demayer 0:6bf0743ece18 13 / and any warranties related to this software are DISCLAIMED.
demayer 0:6bf0743ece18 14 / The copyright owner or contributors be NOT LIABLE for any damages caused
demayer 0:6bf0743ece18 15 / by use of this software.
demayer 0:6bf0743ece18 16 /----------------------------------------------------------------------------*/
demayer 0:6bf0743ece18 17
demayer 0:6bf0743ece18 18
demayer 0:6bf0743ece18 19 #include "ff.h" /* Declarations of FatFs API */
demayer 0:6bf0743ece18 20 #include "diskio.h" /* Declarations of disk I/O functions */
demayer 0:6bf0743ece18 21
demayer 0:6bf0743ece18 22
demayer 0:6bf0743ece18 23 /*--------------------------------------------------------------------------
demayer 0:6bf0743ece18 24
demayer 0:6bf0743ece18 25 Module Private Definitions
demayer 0:6bf0743ece18 26
demayer 0:6bf0743ece18 27 ---------------------------------------------------------------------------*/
demayer 0:6bf0743ece18 28
demayer 0:6bf0743ece18 29 #if _FATFS != 64180 /* Revision ID */
demayer 0:6bf0743ece18 30 #error Wrong include file (ff.h).
demayer 0:6bf0743ece18 31 #endif
demayer 0:6bf0743ece18 32
demayer 0:6bf0743ece18 33
demayer 0:6bf0743ece18 34 /* Reentrancy related */
demayer 0:6bf0743ece18 35 #if _FS_REENTRANT
demayer 0:6bf0743ece18 36 #if _USE_LFN == 1
demayer 0:6bf0743ece18 37 #error Static LFN work area cannot be used at thread-safe configuration
demayer 0:6bf0743ece18 38 #endif
demayer 0:6bf0743ece18 39 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
demayer 0:6bf0743ece18 40 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
demayer 0:6bf0743ece18 41 #else
demayer 0:6bf0743ece18 42 #define ENTER_FF(fs)
demayer 0:6bf0743ece18 43 #define LEAVE_FF(fs, res) return res
demayer 0:6bf0743ece18 44 #endif
demayer 0:6bf0743ece18 45
demayer 0:6bf0743ece18 46 #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
demayer 0:6bf0743ece18 47
demayer 0:6bf0743ece18 48
demayer 0:6bf0743ece18 49 /* Definitions of sector size */
demayer 0:6bf0743ece18 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)
demayer 0:6bf0743ece18 51 #error Wrong sector size configuration
demayer 0:6bf0743ece18 52 #endif
demayer 0:6bf0743ece18 53 #if _MAX_SS == _MIN_SS
demayer 0:6bf0743ece18 54 #define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
demayer 0:6bf0743ece18 55 #else
demayer 0:6bf0743ece18 56 #define SS(fs) ((fs)->ssize) /* Variable sector size */
demayer 0:6bf0743ece18 57 #endif
demayer 0:6bf0743ece18 58
demayer 0:6bf0743ece18 59
demayer 0:6bf0743ece18 60 /* Timestamp feature */
demayer 0:6bf0743ece18 61 #if _FS_NORTC == 1
demayer 0:6bf0743ece18 62 #if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
demayer 0:6bf0743ece18 63 #error Invalid _FS_NORTC settings
demayer 0:6bf0743ece18 64 #endif
demayer 0:6bf0743ece18 65 #define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
demayer 0:6bf0743ece18 66 #else
demayer 0:6bf0743ece18 67 #define GET_FATTIME() get_fattime()
demayer 0:6bf0743ece18 68 #endif
demayer 0:6bf0743ece18 69
demayer 0:6bf0743ece18 70
demayer 0:6bf0743ece18 71 /* File access control feature */
demayer 0:6bf0743ece18 72 #if _FS_LOCK
demayer 0:6bf0743ece18 73 #if _FS_READONLY
demayer 0:6bf0743ece18 74 #error _FS_LOCK must be 0 at read-only configuration
demayer 0:6bf0743ece18 75 #endif
demayer 0:6bf0743ece18 76 typedef struct {
demayer 0:6bf0743ece18 77 FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */
demayer 0:6bf0743ece18 78 DWORD clu; /* Object ID 2, directory (0:root) */
demayer 0:6bf0743ece18 79 WORD idx; /* Object ID 3, directory index */
demayer 0:6bf0743ece18 80 WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
demayer 0:6bf0743ece18 81 } FILESEM;
demayer 0:6bf0743ece18 82 #endif
demayer 0:6bf0743ece18 83
demayer 0:6bf0743ece18 84
demayer 0:6bf0743ece18 85
demayer 0:6bf0743ece18 86 /* DBCS code ranges and SBCS upper conversion tables */
demayer 0:6bf0743ece18 87
demayer 0:6bf0743ece18 88 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
demayer 0:6bf0743ece18 89 #define _DF1S 0x81 /* DBC 1st byte range 1 start */
demayer 0:6bf0743ece18 90 #define _DF1E 0x9F /* DBC 1st byte range 1 end */
demayer 0:6bf0743ece18 91 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
demayer 0:6bf0743ece18 92 #define _DF2E 0xFC /* DBC 1st byte range 2 end */
demayer 0:6bf0743ece18 93 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
demayer 0:6bf0743ece18 94 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
demayer 0:6bf0743ece18 95 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
demayer 0:6bf0743ece18 96 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
demayer 0:6bf0743ece18 97
demayer 0:6bf0743ece18 98 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
demayer 0:6bf0743ece18 99 #define _DF1S 0x81
demayer 0:6bf0743ece18 100 #define _DF1E 0xFE
demayer 0:6bf0743ece18 101 #define _DS1S 0x40
demayer 0:6bf0743ece18 102 #define _DS1E 0x7E
demayer 0:6bf0743ece18 103 #define _DS2S 0x80
demayer 0:6bf0743ece18 104 #define _DS2E 0xFE
demayer 0:6bf0743ece18 105
demayer 0:6bf0743ece18 106 #elif _CODE_PAGE == 949 /* Korean */
demayer 0:6bf0743ece18 107 #define _DF1S 0x81
demayer 0:6bf0743ece18 108 #define _DF1E 0xFE
demayer 0:6bf0743ece18 109 #define _DS1S 0x41
demayer 0:6bf0743ece18 110 #define _DS1E 0x5A
demayer 0:6bf0743ece18 111 #define _DS2S 0x61
demayer 0:6bf0743ece18 112 #define _DS2E 0x7A
demayer 0:6bf0743ece18 113 #define _DS3S 0x81
demayer 0:6bf0743ece18 114 #define _DS3E 0xFE
demayer 0:6bf0743ece18 115
demayer 0:6bf0743ece18 116 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
demayer 0:6bf0743ece18 117 #define _DF1S 0x81
demayer 0:6bf0743ece18 118 #define _DF1E 0xFE
demayer 0:6bf0743ece18 119 #define _DS1S 0x40
demayer 0:6bf0743ece18 120 #define _DS1E 0x7E
demayer 0:6bf0743ece18 121 #define _DS2S 0xA1
demayer 0:6bf0743ece18 122 #define _DS2E 0xFE
demayer 0:6bf0743ece18 123
demayer 0:6bf0743ece18 124 #elif _CODE_PAGE == 437 /* U.S. */
demayer 0:6bf0743ece18 125 #define _DF1S 0
demayer 0:6bf0743ece18 126 #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
demayer 0:6bf0743ece18 127 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 128 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 129 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 130 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 131 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 132 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 133 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 134
demayer 0:6bf0743ece18 135 #elif _CODE_PAGE == 720 /* Arabic */
demayer 0:6bf0743ece18 136 #define _DF1S 0
demayer 0:6bf0743ece18 137 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 138 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 139 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 140 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 141 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 142 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 143 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 144 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 145
demayer 0:6bf0743ece18 146 #elif _CODE_PAGE == 737 /* Greek */
demayer 0:6bf0743ece18 147 #define _DF1S 0
demayer 0:6bf0743ece18 148 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 149 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
demayer 0:6bf0743ece18 150 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
demayer 0:6bf0743ece18 151 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 152 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 153 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 154 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 155 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 156
demayer 0:6bf0743ece18 157 #elif _CODE_PAGE == 771 /* KBL */
demayer 0:6bf0743ece18 158 #define _DF1S 0
demayer 0:6bf0743ece18 159 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 160 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 161 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 162 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 163 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 164 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
demayer 0:6bf0743ece18 165 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 166 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
demayer 0:6bf0743ece18 167
demayer 0:6bf0743ece18 168 #elif _CODE_PAGE == 775 /* Baltic */
demayer 0:6bf0743ece18 169 #define _DF1S 0
demayer 0:6bf0743ece18 170 #define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 171 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 172 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 173 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 174 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 175 0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 176 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 177 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 178
demayer 0:6bf0743ece18 179 #elif _CODE_PAGE == 850 /* Latin 1 */
demayer 0:6bf0743ece18 180 #define _DF1S 0
demayer 0:6bf0743ece18 181 #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
demayer 0:6bf0743ece18 182 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
demayer 0:6bf0743ece18 183 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 184 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 185 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 186 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
demayer 0:6bf0743ece18 187 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
demayer 0:6bf0743ece18 188 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 189
demayer 0:6bf0743ece18 190 #elif _CODE_PAGE == 852 /* Latin 2 */
demayer 0:6bf0743ece18 191 #define _DF1S 0
demayer 0:6bf0743ece18 192 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 193 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
demayer 0:6bf0743ece18 194 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
demayer 0:6bf0743ece18 195 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
demayer 0:6bf0743ece18 196 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 197 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 198 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
demayer 0:6bf0743ece18 199 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
demayer 0:6bf0743ece18 200
demayer 0:6bf0743ece18 201 #elif _CODE_PAGE == 855 /* Cyrillic */
demayer 0:6bf0743ece18 202 #define _DF1S 0
demayer 0:6bf0743ece18 203 #define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
demayer 0:6bf0743ece18 204 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
demayer 0:6bf0743ece18 205 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 206 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
demayer 0:6bf0743ece18 207 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 208 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
demayer 0:6bf0743ece18 209 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
demayer 0:6bf0743ece18 210 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 211
demayer 0:6bf0743ece18 212 #elif _CODE_PAGE == 857 /* Turkish */
demayer 0:6bf0743ece18 213 #define _DF1S 0
demayer 0:6bf0743ece18 214 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
demayer 0:6bf0743ece18 215 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
demayer 0:6bf0743ece18 216 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 217 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 218 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 219 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 220 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 221 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 222
demayer 0:6bf0743ece18 223 #elif _CODE_PAGE == 860 /* Portuguese */
demayer 0:6bf0743ece18 224 #define _DF1S 0
demayer 0:6bf0743ece18 225 #define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
demayer 0:6bf0743ece18 226 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 227 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 228 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 229 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 230 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 231 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 232 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 233
demayer 0:6bf0743ece18 234 #elif _CODE_PAGE == 861 /* Icelandic */
demayer 0:6bf0743ece18 235 #define _DF1S 0
demayer 0:6bf0743ece18 236 #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 237 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 238 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 239 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 240 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 241 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 242 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 243 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 244
demayer 0:6bf0743ece18 245 #elif _CODE_PAGE == 862 /* Hebrew */
demayer 0:6bf0743ece18 246 #define _DF1S 0
demayer 0:6bf0743ece18 247 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 248 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 249 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 250 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 251 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 252 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 253 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 254 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 255
demayer 0:6bf0743ece18 256 #elif _CODE_PAGE == 863 /* Canadian-French */
demayer 0:6bf0743ece18 257 #define _DF1S 0
demayer 0:6bf0743ece18 258 #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
demayer 0:6bf0743ece18 259 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
demayer 0:6bf0743ece18 260 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 261 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 262 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 263 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 264 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 265 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 266
demayer 0:6bf0743ece18 267 #elif _CODE_PAGE == 864 /* Arabic */
demayer 0:6bf0743ece18 268 #define _DF1S 0
demayer 0:6bf0743ece18 269 #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
demayer 0:6bf0743ece18 270 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 271 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 272 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 273 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 274 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 275 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 276 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 277
demayer 0:6bf0743ece18 278 #elif _CODE_PAGE == 865 /* Nordic */
demayer 0:6bf0743ece18 279 #define _DF1S 0
demayer 0:6bf0743ece18 280 #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
demayer 0:6bf0743ece18 281 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 282 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 283 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 284 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 285 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 286 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
demayer 0:6bf0743ece18 287 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 288
demayer 0:6bf0743ece18 289 #elif _CODE_PAGE == 866 /* Russian */
demayer 0:6bf0743ece18 290 #define _DF1S 0
demayer 0:6bf0743ece18 291 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 292 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 293 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 294 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 295 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 296 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
demayer 0:6bf0743ece18 297 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
demayer 0:6bf0743ece18 298 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
demayer 0:6bf0743ece18 299
demayer 0:6bf0743ece18 300 #elif _CODE_PAGE == 869 /* Greek 2 */
demayer 0:6bf0743ece18 301 #define _DF1S 0
demayer 0:6bf0743ece18 302 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
demayer 0:6bf0743ece18 303 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
demayer 0:6bf0743ece18 304 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
demayer 0:6bf0743ece18 305 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
demayer 0:6bf0743ece18 306 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
demayer 0:6bf0743ece18 307 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
demayer 0:6bf0743ece18 308 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
demayer 0:6bf0743ece18 309 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
demayer 0:6bf0743ece18 310
demayer 0:6bf0743ece18 311 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
demayer 0:6bf0743ece18 312 #if _USE_LFN
demayer 0:6bf0743ece18 313 #error Cannot use LFN feature without valid code page.
demayer 0:6bf0743ece18 314 #endif
demayer 0:6bf0743ece18 315 #define _DF1S 0
demayer 0:6bf0743ece18 316
demayer 0:6bf0743ece18 317 #else
demayer 0:6bf0743ece18 318 #error Unknown code page
demayer 0:6bf0743ece18 319
demayer 0:6bf0743ece18 320 #endif
demayer 0:6bf0743ece18 321
demayer 0:6bf0743ece18 322
demayer 0:6bf0743ece18 323 /* Character code support macros */
demayer 0:6bf0743ece18 324 #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
demayer 0:6bf0743ece18 325 #define IsLower(c) (((c)>='a')&&((c)<='z'))
demayer 0:6bf0743ece18 326 #define IsDigit(c) (((c)>='0')&&((c)<='9'))
demayer 0:6bf0743ece18 327
demayer 0:6bf0743ece18 328 #if _DF1S /* Code page is DBCS */
demayer 0:6bf0743ece18 329
demayer 0:6bf0743ece18 330 #ifdef _DF2S /* Two 1st byte areas */
demayer 0:6bf0743ece18 331 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
demayer 0:6bf0743ece18 332 #else /* One 1st byte area */
demayer 0:6bf0743ece18 333 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
demayer 0:6bf0743ece18 334 #endif
demayer 0:6bf0743ece18 335
demayer 0:6bf0743ece18 336 #ifdef _DS3S /* Three 2nd byte areas */
demayer 0:6bf0743ece18 337 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
demayer 0:6bf0743ece18 338 #else /* Two 2nd byte areas */
demayer 0:6bf0743ece18 339 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
demayer 0:6bf0743ece18 340 #endif
demayer 0:6bf0743ece18 341
demayer 0:6bf0743ece18 342 #else /* Code page is SBCS */
demayer 0:6bf0743ece18 343
demayer 0:6bf0743ece18 344 #define IsDBCS1(c) 0
demayer 0:6bf0743ece18 345 #define IsDBCS2(c) 0
demayer 0:6bf0743ece18 346
demayer 0:6bf0743ece18 347 #endif /* _DF1S */
demayer 0:6bf0743ece18 348
demayer 0:6bf0743ece18 349
demayer 0:6bf0743ece18 350 /* Name status flags */
demayer 0:6bf0743ece18 351 #define NSFLAG 11 /* Index of name status byte in fn[] */
demayer 0:6bf0743ece18 352 #define NS_LOSS 0x01 /* Out of 8.3 format */
demayer 0:6bf0743ece18 353 #define NS_LFN 0x02 /* Force to create LFN entry */
demayer 0:6bf0743ece18 354 #define NS_LAST 0x04 /* Last segment */
demayer 0:6bf0743ece18 355 #define NS_BODY 0x08 /* Lower case flag (body) */
demayer 0:6bf0743ece18 356 #define NS_EXT 0x10 /* Lower case flag (ext) */
demayer 0:6bf0743ece18 357 #define NS_DOT 0x20 /* Dot entry */
demayer 0:6bf0743ece18 358
demayer 0:6bf0743ece18 359
demayer 0:6bf0743ece18 360 /* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
demayer 0:6bf0743ece18 361 #define MIN_FAT16 4086U /* Minimum number of clusters of FAT16 */
demayer 0:6bf0743ece18 362 #define MIN_FAT32 65526U /* Minimum number of clusters of FAT32 */
demayer 0:6bf0743ece18 363
demayer 0:6bf0743ece18 364
demayer 0:6bf0743ece18 365 /* FatFs refers the members in the FAT structures as byte array instead of
demayer 0:6bf0743ece18 366 / structure members because the structure is not binary compatible between
demayer 0:6bf0743ece18 367 / different platforms */
demayer 0:6bf0743ece18 368
demayer 0:6bf0743ece18 369 #define BS_jmpBoot 0 /* x86 jump instruction (3) */
demayer 0:6bf0743ece18 370 #define BS_OEMName 3 /* OEM name (8) */
demayer 0:6bf0743ece18 371 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
demayer 0:6bf0743ece18 372 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
demayer 0:6bf0743ece18 373 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
demayer 0:6bf0743ece18 374 #define BPB_NumFATs 16 /* Number of FAT copies (1) */
demayer 0:6bf0743ece18 375 #define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */
demayer 0:6bf0743ece18 376 #define BPB_TotSec16 19 /* Volume size [sector] (2) */
demayer 0:6bf0743ece18 377 #define BPB_Media 21 /* Media descriptor (1) */
demayer 0:6bf0743ece18 378 #define BPB_FATSz16 22 /* FAT size [sector] (2) */
demayer 0:6bf0743ece18 379 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */
demayer 0:6bf0743ece18 380 #define BPB_NumHeads 26 /* Number of heads (2) */
demayer 0:6bf0743ece18 381 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
demayer 0:6bf0743ece18 382 #define BPB_TotSec32 32 /* Volume size [sector] (4) */
demayer 0:6bf0743ece18 383 #define BS_DrvNum 36 /* Physical drive number (1) */
demayer 0:6bf0743ece18 384 #define BS_NTres 37 /* Error flag (1) */
demayer 0:6bf0743ece18 385 #define BS_BootSig 38 /* Extended boot signature (1) */
demayer 0:6bf0743ece18 386 #define BS_VolID 39 /* Volume serial number (4) */
demayer 0:6bf0743ece18 387 #define BS_VolLab 43 /* Volume label (8) */
demayer 0:6bf0743ece18 388 #define BS_FilSysType 54 /* File system type (1) */
demayer 0:6bf0743ece18 389 #define BPB_FATSz32 36 /* FAT size [sector] (4) */
demayer 0:6bf0743ece18 390 #define BPB_ExtFlags 40 /* Extended flags (2) */
demayer 0:6bf0743ece18 391 #define BPB_FSVer 42 /* File system version (2) */
demayer 0:6bf0743ece18 392 #define BPB_RootClus 44 /* Root directory first cluster (4) */
demayer 0:6bf0743ece18 393 #define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */
demayer 0:6bf0743ece18 394 #define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
demayer 0:6bf0743ece18 395 #define BS_DrvNum32 64 /* Physical drive number (1) */
demayer 0:6bf0743ece18 396 #define BS_NTres32 65 /* Error flag (1) */
demayer 0:6bf0743ece18 397 #define BS_BootSig32 66 /* Extended boot signature (1) */
demayer 0:6bf0743ece18 398 #define BS_VolID32 67 /* Volume serial number (4) */
demayer 0:6bf0743ece18 399 #define BS_VolLab32 71 /* Volume label (8) */
demayer 0:6bf0743ece18 400 #define BS_FilSysType32 82 /* File system type (1) */
demayer 0:6bf0743ece18 401 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */
demayer 0:6bf0743ece18 402 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */
demayer 0:6bf0743ece18 403 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
demayer 0:6bf0743ece18 404 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
demayer 0:6bf0743ece18 405 #define MBR_Table 446 /* MBR: Partition table offset (2) */
demayer 0:6bf0743ece18 406 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
demayer 0:6bf0743ece18 407 #define BS_55AA 510 /* Signature word (2) */
demayer 0:6bf0743ece18 408
demayer 0:6bf0743ece18 409 #define DIR_Name 0 /* Short file name (11) */
demayer 0:6bf0743ece18 410 #define DIR_Attr 11 /* Attribute (1) */
demayer 0:6bf0743ece18 411 #define DIR_NTres 12 /* Lower case flag (1) */
demayer 0:6bf0743ece18 412 #define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
demayer 0:6bf0743ece18 413 #define DIR_CrtTime 14 /* Created time (2) */
demayer 0:6bf0743ece18 414 #define DIR_CrtDate 16 /* Created date (2) */
demayer 0:6bf0743ece18 415 #define DIR_LstAccDate 18 /* Last accessed date (2) */
demayer 0:6bf0743ece18 416 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
demayer 0:6bf0743ece18 417 #define DIR_WrtTime 22 /* Modified time (2) */
demayer 0:6bf0743ece18 418 #define DIR_WrtDate 24 /* Modified date (2) */
demayer 0:6bf0743ece18 419 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
demayer 0:6bf0743ece18 420 #define DIR_FileSize 28 /* File size (4) */
demayer 0:6bf0743ece18 421 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
demayer 0:6bf0743ece18 422 #define LDIR_Attr 11 /* LFN attribute (1) */
demayer 0:6bf0743ece18 423 #define LDIR_Type 12 /* LFN type (1) */
demayer 0:6bf0743ece18 424 #define LDIR_Chksum 13 /* Checksum of corresponding SFN entry */
demayer 0:6bf0743ece18 425 #define LDIR_FstClusLO 26 /* Must be zero (0) */
demayer 0:6bf0743ece18 426 #define SZ_DIRE 32 /* Size of a directory entry */
demayer 0:6bf0743ece18 427 #define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
demayer 0:6bf0743ece18 428 #define DDEM 0xE5 /* Deleted directory entry mark at DIR_Name[0] */
demayer 0:6bf0743ece18 429 #define RDDEM 0x05 /* Replacement of the character collides with DDEM */
demayer 0:6bf0743ece18 430
demayer 0:6bf0743ece18 431
demayer 0:6bf0743ece18 432
demayer 0:6bf0743ece18 433
demayer 0:6bf0743ece18 434 /*--------------------------------------------------------------------------
demayer 0:6bf0743ece18 435
demayer 0:6bf0743ece18 436 Module Private Work Area
demayer 0:6bf0743ece18 437
demayer 0:6bf0743ece18 438 ---------------------------------------------------------------------------*/
demayer 0:6bf0743ece18 439
demayer 0:6bf0743ece18 440 /* Remark: Uninitialized variables with static duration are guaranteed
demayer 0:6bf0743ece18 441 / zero/null at start-up. If not, either the linker or start-up routine
demayer 0:6bf0743ece18 442 / being used is not compliance with ANSI-C standard.
demayer 0:6bf0743ece18 443 */
demayer 0:6bf0743ece18 444
demayer 0:6bf0743ece18 445 #if _VOLUMES < 1 || _VOLUMES > 9
demayer 0:6bf0743ece18 446 #error Wrong _VOLUMES setting
demayer 0:6bf0743ece18 447 #endif
demayer 0:6bf0743ece18 448 static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
demayer 0:6bf0743ece18 449 static WORD Fsid; /* File system mount ID */
demayer 0:6bf0743ece18 450
demayer 0:6bf0743ece18 451 #if _FS_RPATH && _VOLUMES >= 2
demayer 0:6bf0743ece18 452 static BYTE CurrVol; /* Current drive */
demayer 0:6bf0743ece18 453 #endif
demayer 0:6bf0743ece18 454
demayer 0:6bf0743ece18 455 #if _FS_LOCK
demayer 0:6bf0743ece18 456 static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
demayer 0:6bf0743ece18 457 #endif
demayer 0:6bf0743ece18 458
demayer 0:6bf0743ece18 459 #if _USE_LFN == 0 /* Non LFN feature */
demayer 0:6bf0743ece18 460 #define DEFINE_NAMEBUF BYTE sfn[12]
demayer 0:6bf0743ece18 461 #define INIT_BUF(dobj) (dobj).fn = sfn
demayer 0:6bf0743ece18 462 #define FREE_BUF()
demayer 0:6bf0743ece18 463 #else
demayer 0:6bf0743ece18 464 #if _MAX_LFN < 12 || _MAX_LFN > 255
demayer 0:6bf0743ece18 465 #error Wrong _MAX_LFN setting
demayer 0:6bf0743ece18 466 #endif
demayer 0:6bf0743ece18 467 #if _USE_LFN == 1 /* LFN feature with static working buffer */
demayer 0:6bf0743ece18 468 static WCHAR LfnBuf[_MAX_LFN + 1];
demayer 0:6bf0743ece18 469 #define DEFINE_NAMEBUF BYTE sfn[12]
demayer 0:6bf0743ece18 470 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
demayer 0:6bf0743ece18 471 #define FREE_BUF()
demayer 0:6bf0743ece18 472 #elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
demayer 0:6bf0743ece18 473 #define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
demayer 0:6bf0743ece18 474 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
demayer 0:6bf0743ece18 475 #define FREE_BUF()
demayer 0:6bf0743ece18 476 #elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
demayer 0:6bf0743ece18 477 #define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR *lfn
demayer 0:6bf0743ece18 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; }
demayer 0:6bf0743ece18 479 #define FREE_BUF() ff_memfree(lfn)
demayer 0:6bf0743ece18 480 #else
demayer 0:6bf0743ece18 481 #error Wrong _USE_LFN setting
demayer 0:6bf0743ece18 482 #endif
demayer 0:6bf0743ece18 483 #endif
demayer 0:6bf0743ece18 484
demayer 0:6bf0743ece18 485 #ifdef _EXCVT
demayer 0:6bf0743ece18 486 static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
demayer 0:6bf0743ece18 487 #endif
demayer 0:6bf0743ece18 488
demayer 0:6bf0743ece18 489
demayer 0:6bf0743ece18 490
demayer 0:6bf0743ece18 491
demayer 0:6bf0743ece18 492
demayer 0:6bf0743ece18 493
demayer 0:6bf0743ece18 494 /*--------------------------------------------------------------------------
demayer 0:6bf0743ece18 495
demayer 0:6bf0743ece18 496 Module Private Functions
demayer 0:6bf0743ece18 497
demayer 0:6bf0743ece18 498 ---------------------------------------------------------------------------*/
demayer 0:6bf0743ece18 499
demayer 0:6bf0743ece18 500
demayer 0:6bf0743ece18 501 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 502 /* String functions */
demayer 0:6bf0743ece18 503 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 504
demayer 0:6bf0743ece18 505 /* Copy memory to memory */
demayer 0:6bf0743ece18 506 static
demayer 0:6bf0743ece18 507 void mem_cpy (void* dst, const void* src, UINT cnt) {
demayer 0:6bf0743ece18 508 BYTE *d = (BYTE*)dst;
demayer 0:6bf0743ece18 509 const BYTE *s = (const BYTE*)src;
demayer 0:6bf0743ece18 510
demayer 0:6bf0743ece18 511 #if _WORD_ACCESS == 1
demayer 0:6bf0743ece18 512 while (cnt >= sizeof (int)) {
demayer 0:6bf0743ece18 513 *(int*)d = *(int*)s;
demayer 0:6bf0743ece18 514 d += sizeof (int); s += sizeof (int);
demayer 0:6bf0743ece18 515 cnt -= sizeof (int);
demayer 0:6bf0743ece18 516 }
demayer 0:6bf0743ece18 517 #endif
demayer 0:6bf0743ece18 518 while (cnt--)
demayer 0:6bf0743ece18 519 *d++ = *s++;
demayer 0:6bf0743ece18 520 }
demayer 0:6bf0743ece18 521
demayer 0:6bf0743ece18 522 /* Fill memory */
demayer 0:6bf0743ece18 523 static
demayer 0:6bf0743ece18 524 void mem_set (void* dst, int val, UINT cnt) {
demayer 0:6bf0743ece18 525 BYTE *d = (BYTE*)dst;
demayer 0:6bf0743ece18 526
demayer 0:6bf0743ece18 527 while (cnt--)
demayer 0:6bf0743ece18 528 *d++ = (BYTE)val;
demayer 0:6bf0743ece18 529 }
demayer 0:6bf0743ece18 530
demayer 0:6bf0743ece18 531 /* Compare memory to memory */
demayer 0:6bf0743ece18 532 static
demayer 0:6bf0743ece18 533 int mem_cmp (const void* dst, const void* src, UINT cnt) {
demayer 0:6bf0743ece18 534 const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
demayer 0:6bf0743ece18 535 int r = 0;
demayer 0:6bf0743ece18 536
demayer 0:6bf0743ece18 537 while (cnt-- && (r = *d++ - *s++) == 0) ;
demayer 0:6bf0743ece18 538 return r;
demayer 0:6bf0743ece18 539 }
demayer 0:6bf0743ece18 540
demayer 0:6bf0743ece18 541 /* Check if chr is contained in the string */
demayer 0:6bf0743ece18 542 static
demayer 0:6bf0743ece18 543 int chk_chr (const char* str, int chr) {
demayer 0:6bf0743ece18 544 while (*str && *str != chr) str++;
demayer 0:6bf0743ece18 545 return *str;
demayer 0:6bf0743ece18 546 }
demayer 0:6bf0743ece18 547
demayer 0:6bf0743ece18 548
demayer 0:6bf0743ece18 549
demayer 0:6bf0743ece18 550
demayer 0:6bf0743ece18 551 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 552 /* Request/Release grant to access the volume */
demayer 0:6bf0743ece18 553 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 554 #if _FS_REENTRANT
demayer 0:6bf0743ece18 555 static
demayer 0:6bf0743ece18 556 int lock_fs (
demayer 0:6bf0743ece18 557 FATFS* fs /* File system object */
demayer 0:6bf0743ece18 558 )
demayer 0:6bf0743ece18 559 {
demayer 0:6bf0743ece18 560 return ff_req_grant(fs->sobj);
demayer 0:6bf0743ece18 561 }
demayer 0:6bf0743ece18 562
demayer 0:6bf0743ece18 563
demayer 0:6bf0743ece18 564 static
demayer 0:6bf0743ece18 565 void unlock_fs (
demayer 0:6bf0743ece18 566 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 567 FRESULT res /* Result code to be returned */
demayer 0:6bf0743ece18 568 )
demayer 0:6bf0743ece18 569 {
demayer 0:6bf0743ece18 570 if (fs &&
demayer 0:6bf0743ece18 571 res != FR_NOT_ENABLED &&
demayer 0:6bf0743ece18 572 res != FR_INVALID_DRIVE &&
demayer 0:6bf0743ece18 573 res != FR_INVALID_OBJECT &&
demayer 0:6bf0743ece18 574 res != FR_TIMEOUT) {
demayer 0:6bf0743ece18 575 ff_rel_grant(fs->sobj);
demayer 0:6bf0743ece18 576 }
demayer 0:6bf0743ece18 577 }
demayer 0:6bf0743ece18 578 #endif
demayer 0:6bf0743ece18 579
demayer 0:6bf0743ece18 580
demayer 0:6bf0743ece18 581
demayer 0:6bf0743ece18 582
demayer 0:6bf0743ece18 583 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 584 /* File lock control functions */
demayer 0:6bf0743ece18 585 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 586 #if _FS_LOCK
demayer 0:6bf0743ece18 587
demayer 0:6bf0743ece18 588 static
demayer 0:6bf0743ece18 589 FRESULT chk_lock ( /* Check if the file can be accessed */
demayer 0:6bf0743ece18 590 FATFS_DIR* dp, /* Directory object pointing the file to be checked */
demayer 0:6bf0743ece18 591 int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
demayer 0:6bf0743ece18 592 )
demayer 0:6bf0743ece18 593 {
demayer 0:6bf0743ece18 594 UINT i, be;
demayer 0:6bf0743ece18 595
demayer 0:6bf0743ece18 596 /* Search file semaphore table */
demayer 0:6bf0743ece18 597 for (i = be = 0; i < _FS_LOCK; i++) {
demayer 0:6bf0743ece18 598 if (Files[i].fs) { /* Existing entry */
demayer 0:6bf0743ece18 599 if (Files[i].fs == dp->fs && /* Check if the object matched with an open object */
demayer 0:6bf0743ece18 600 Files[i].clu == dp->sclust &&
demayer 0:6bf0743ece18 601 Files[i].idx == dp->index) break;
demayer 0:6bf0743ece18 602 } else { /* Blank entry */
demayer 0:6bf0743ece18 603 be = 1;
demayer 0:6bf0743ece18 604 }
demayer 0:6bf0743ece18 605 }
demayer 0:6bf0743ece18 606 if (i == _FS_LOCK) /* The object is not opened */
demayer 0:6bf0743ece18 607 return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */
demayer 0:6bf0743ece18 608
demayer 0:6bf0743ece18 609 /* The object has been opened. Reject any open against writing file and all write mode open */
demayer 0:6bf0743ece18 610 return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
demayer 0:6bf0743ece18 611 }
demayer 0:6bf0743ece18 612
demayer 0:6bf0743ece18 613
demayer 0:6bf0743ece18 614 static
demayer 0:6bf0743ece18 615 int enq_lock (void) /* Check if an entry is available for a new object */
demayer 0:6bf0743ece18 616 {
demayer 0:6bf0743ece18 617 UINT i;
demayer 0:6bf0743ece18 618
demayer 0:6bf0743ece18 619 for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
demayer 0:6bf0743ece18 620 return (i == _FS_LOCK) ? 0 : 1;
demayer 0:6bf0743ece18 621 }
demayer 0:6bf0743ece18 622
demayer 0:6bf0743ece18 623
demayer 0:6bf0743ece18 624 static
demayer 0:6bf0743ece18 625 UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
demayer 0:6bf0743ece18 626 FATFS_DIR* dp, /* Directory object pointing the file to register or increment */
demayer 0:6bf0743ece18 627 int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
demayer 0:6bf0743ece18 628 )
demayer 0:6bf0743ece18 629 {
demayer 0:6bf0743ece18 630 UINT i;
demayer 0:6bf0743ece18 631
demayer 0:6bf0743ece18 632
demayer 0:6bf0743ece18 633 for (i = 0; i < _FS_LOCK; i++) { /* Find the object */
demayer 0:6bf0743ece18 634 if (Files[i].fs == dp->fs &&
demayer 0:6bf0743ece18 635 Files[i].clu == dp->sclust &&
demayer 0:6bf0743ece18 636 Files[i].idx == dp->index) break;
demayer 0:6bf0743ece18 637 }
demayer 0:6bf0743ece18 638
demayer 0:6bf0743ece18 639 if (i == _FS_LOCK) { /* Not opened. Register it as new. */
demayer 0:6bf0743ece18 640 for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
demayer 0:6bf0743ece18 641 if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */
demayer 0:6bf0743ece18 642 Files[i].fs = dp->fs;
demayer 0:6bf0743ece18 643 Files[i].clu = dp->sclust;
demayer 0:6bf0743ece18 644 Files[i].idx = dp->index;
demayer 0:6bf0743ece18 645 Files[i].ctr = 0;
demayer 0:6bf0743ece18 646 }
demayer 0:6bf0743ece18 647
demayer 0:6bf0743ece18 648 if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
demayer 0:6bf0743ece18 649
demayer 0:6bf0743ece18 650 Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
demayer 0:6bf0743ece18 651
demayer 0:6bf0743ece18 652 return i + 1;
demayer 0:6bf0743ece18 653 }
demayer 0:6bf0743ece18 654
demayer 0:6bf0743ece18 655
demayer 0:6bf0743ece18 656 static
demayer 0:6bf0743ece18 657 FRESULT dec_lock ( /* Decrement object open counter */
demayer 0:6bf0743ece18 658 UINT i /* Semaphore index (1..) */
demayer 0:6bf0743ece18 659 )
demayer 0:6bf0743ece18 660 {
demayer 0:6bf0743ece18 661 WORD n;
demayer 0:6bf0743ece18 662 FRESULT res;
demayer 0:6bf0743ece18 663
demayer 0:6bf0743ece18 664
demayer 0:6bf0743ece18 665 if (--i < _FS_LOCK) { /* Shift index number origin from 0 */
demayer 0:6bf0743ece18 666 n = Files[i].ctr;
demayer 0:6bf0743ece18 667 if (n == 0x100) n = 0; /* If write mode open, delete the entry */
demayer 0:6bf0743ece18 668 if (n) n--; /* Decrement read mode open count */
demayer 0:6bf0743ece18 669 Files[i].ctr = n;
demayer 0:6bf0743ece18 670 if (!n) Files[i].fs = 0; /* Delete the entry if open count gets zero */
demayer 0:6bf0743ece18 671 res = FR_OK;
demayer 0:6bf0743ece18 672 } else {
demayer 0:6bf0743ece18 673 res = FR_INT_ERR; /* Invalid index nunber */
demayer 0:6bf0743ece18 674 }
demayer 0:6bf0743ece18 675 return res;
demayer 0:6bf0743ece18 676 }
demayer 0:6bf0743ece18 677
demayer 0:6bf0743ece18 678
demayer 0:6bf0743ece18 679 static
demayer 0:6bf0743ece18 680 void clear_lock ( /* Clear lock entries of the volume */
demayer 0:6bf0743ece18 681 FATFS *fs
demayer 0:6bf0743ece18 682 )
demayer 0:6bf0743ece18 683 {
demayer 0:6bf0743ece18 684 UINT i;
demayer 0:6bf0743ece18 685
demayer 0:6bf0743ece18 686 for (i = 0; i < _FS_LOCK; i++) {
demayer 0:6bf0743ece18 687 if (Files[i].fs == fs) Files[i].fs = 0;
demayer 0:6bf0743ece18 688 }
demayer 0:6bf0743ece18 689 }
demayer 0:6bf0743ece18 690 #endif
demayer 0:6bf0743ece18 691
demayer 0:6bf0743ece18 692
demayer 0:6bf0743ece18 693
demayer 0:6bf0743ece18 694
demayer 0:6bf0743ece18 695 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 696 /* Move/Flush disk access window in the file system object */
demayer 0:6bf0743ece18 697 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 698 #if !_FS_READONLY
demayer 0:6bf0743ece18 699 static
demayer 0:6bf0743ece18 700 FRESULT sync_window ( /* FR_OK:succeeded, !=0:error */
demayer 0:6bf0743ece18 701 FATFS* fs /* File system object */
demayer 0:6bf0743ece18 702 )
demayer 0:6bf0743ece18 703 {
demayer 0:6bf0743ece18 704 DWORD wsect;
demayer 0:6bf0743ece18 705 UINT nf;
demayer 0:6bf0743ece18 706 FRESULT res = FR_OK;
demayer 0:6bf0743ece18 707
demayer 0:6bf0743ece18 708
demayer 0:6bf0743ece18 709 if (fs->wflag) { /* Write back the sector if it is dirty */
demayer 0:6bf0743ece18 710 wsect = fs->winsect; /* Current sector number */
demayer 0:6bf0743ece18 711 if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
demayer 0:6bf0743ece18 712 res = FR_DISK_ERR;
demayer 0:6bf0743ece18 713 } else {
demayer 0:6bf0743ece18 714 fs->wflag = 0;
demayer 0:6bf0743ece18 715 if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */
demayer 0:6bf0743ece18 716 for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */
demayer 0:6bf0743ece18 717 wsect += fs->fsize;
demayer 0:6bf0743ece18 718 disk_write(fs->drv, fs->win, wsect, 1);
demayer 0:6bf0743ece18 719 }
demayer 0:6bf0743ece18 720 }
demayer 0:6bf0743ece18 721 }
demayer 0:6bf0743ece18 722 }
demayer 0:6bf0743ece18 723 return res;
demayer 0:6bf0743ece18 724 }
demayer 0:6bf0743ece18 725 #endif
demayer 0:6bf0743ece18 726
demayer 0:6bf0743ece18 727
demayer 0:6bf0743ece18 728 static
demayer 0:6bf0743ece18 729 FRESULT move_window ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 730 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 731 DWORD sector /* Sector number to make appearance in the fs->win[] */
demayer 0:6bf0743ece18 732 )
demayer 0:6bf0743ece18 733 {
demayer 0:6bf0743ece18 734 FRESULT res = FR_OK;
demayer 0:6bf0743ece18 735
demayer 0:6bf0743ece18 736
demayer 0:6bf0743ece18 737 if (sector != fs->winsect) { /* Window offset changed? */
demayer 0:6bf0743ece18 738 #if !_FS_READONLY
demayer 0:6bf0743ece18 739 res = sync_window(fs); /* Write-back changes */
demayer 0:6bf0743ece18 740 #endif
demayer 0:6bf0743ece18 741 if (res == FR_OK) { /* Fill sector window with new data */
demayer 0:6bf0743ece18 742 if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
demayer 0:6bf0743ece18 743 sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */
demayer 0:6bf0743ece18 744 res = FR_DISK_ERR;
demayer 0:6bf0743ece18 745 }
demayer 0:6bf0743ece18 746 fs->winsect = sector;
demayer 0:6bf0743ece18 747 }
demayer 0:6bf0743ece18 748 }
demayer 0:6bf0743ece18 749 return res;
demayer 0:6bf0743ece18 750 }
demayer 0:6bf0743ece18 751
demayer 0:6bf0743ece18 752
demayer 0:6bf0743ece18 753
demayer 0:6bf0743ece18 754
demayer 0:6bf0743ece18 755 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 756 /* Synchronize file system and strage device */
demayer 0:6bf0743ece18 757 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 758 #if !_FS_READONLY
demayer 0:6bf0743ece18 759 static
demayer 0:6bf0743ece18 760 FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */
demayer 0:6bf0743ece18 761 FATFS* fs /* File system object */
demayer 0:6bf0743ece18 762 )
demayer 0:6bf0743ece18 763 {
demayer 0:6bf0743ece18 764 FRESULT res;
demayer 0:6bf0743ece18 765
demayer 0:6bf0743ece18 766
demayer 0:6bf0743ece18 767 res = sync_window(fs);
demayer 0:6bf0743ece18 768 if (res == FR_OK) {
demayer 0:6bf0743ece18 769 /* Update FSInfo sector if needed */
demayer 0:6bf0743ece18 770 if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
demayer 0:6bf0743ece18 771 /* Create FSInfo structure */
demayer 0:6bf0743ece18 772 mem_set(fs->win, 0, SS(fs));
demayer 0:6bf0743ece18 773 ST_WORD(fs->win + BS_55AA, 0xAA55);
demayer 0:6bf0743ece18 774 ST_DWORD(fs->win + FSI_LeadSig, 0x41615252);
demayer 0:6bf0743ece18 775 ST_DWORD(fs->win + FSI_StrucSig, 0x61417272);
demayer 0:6bf0743ece18 776 ST_DWORD(fs->win + FSI_Free_Count, fs->free_clust);
demayer 0:6bf0743ece18 777 ST_DWORD(fs->win + FSI_Nxt_Free, fs->last_clust);
demayer 0:6bf0743ece18 778 /* Write it into the FSInfo sector */
demayer 0:6bf0743ece18 779 fs->winsect = fs->volbase + 1;
demayer 0:6bf0743ece18 780 disk_write(fs->drv, fs->win, fs->winsect, 1);
demayer 0:6bf0743ece18 781 fs->fsi_flag = 0;
demayer 0:6bf0743ece18 782 }
demayer 0:6bf0743ece18 783 /* Make sure that no pending write process in the physical drive */
demayer 0:6bf0743ece18 784 if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
demayer 0:6bf0743ece18 785 res = FR_DISK_ERR;
demayer 0:6bf0743ece18 786 }
demayer 0:6bf0743ece18 787
demayer 0:6bf0743ece18 788 return res;
demayer 0:6bf0743ece18 789 }
demayer 0:6bf0743ece18 790 #endif
demayer 0:6bf0743ece18 791
demayer 0:6bf0743ece18 792
demayer 0:6bf0743ece18 793
demayer 0:6bf0743ece18 794
demayer 0:6bf0743ece18 795 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 796 /* Get sector# from cluster# */
demayer 0:6bf0743ece18 797 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 798 /* Hidden API for hacks and disk tools */
demayer 0:6bf0743ece18 799
demayer 0:6bf0743ece18 800 DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
demayer 0:6bf0743ece18 801 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 802 DWORD clst /* Cluster# to be converted */
demayer 0:6bf0743ece18 803 )
demayer 0:6bf0743ece18 804 {
demayer 0:6bf0743ece18 805 clst -= 2;
demayer 0:6bf0743ece18 806 if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */
demayer 0:6bf0743ece18 807 return clst * fs->csize + fs->database;
demayer 0:6bf0743ece18 808 }
demayer 0:6bf0743ece18 809
demayer 0:6bf0743ece18 810
demayer 0:6bf0743ece18 811
demayer 0:6bf0743ece18 812
demayer 0:6bf0743ece18 813 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 814 /* FAT access - Read value of a FAT entry */
demayer 0:6bf0743ece18 815 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 816 /* Hidden API for hacks and disk tools */
demayer 0:6bf0743ece18 817
demayer 0:6bf0743ece18 818 DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
demayer 0:6bf0743ece18 819 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 820 DWORD clst /* FAT index number (cluster number) to get the value */
demayer 0:6bf0743ece18 821 )
demayer 0:6bf0743ece18 822 {
demayer 0:6bf0743ece18 823 UINT wc, bc;
demayer 0:6bf0743ece18 824 BYTE *p;
demayer 0:6bf0743ece18 825 DWORD val;
demayer 0:6bf0743ece18 826
demayer 0:6bf0743ece18 827
demayer 0:6bf0743ece18 828 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
demayer 0:6bf0743ece18 829 val = 1; /* Internal error */
demayer 0:6bf0743ece18 830
demayer 0:6bf0743ece18 831 } else {
demayer 0:6bf0743ece18 832 val = 0xFFFFFFFF; /* Default value falls on disk error */
demayer 0:6bf0743ece18 833
demayer 0:6bf0743ece18 834 switch (fs->fs_type) {
demayer 0:6bf0743ece18 835 case FS_FAT12 :
demayer 0:6bf0743ece18 836 bc = (UINT)clst; bc += bc / 2;
demayer 0:6bf0743ece18 837 if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
demayer 0:6bf0743ece18 838 wc = fs->win[bc++ % SS(fs)];
demayer 0:6bf0743ece18 839 if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
demayer 0:6bf0743ece18 840 wc |= fs->win[bc % SS(fs)] << 8;
demayer 0:6bf0743ece18 841 val = clst & 1 ? wc >> 4 : (wc & 0xFFF);
demayer 0:6bf0743ece18 842 break;
demayer 0:6bf0743ece18 843
demayer 0:6bf0743ece18 844 case FS_FAT16 :
demayer 0:6bf0743ece18 845 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
demayer 0:6bf0743ece18 846 p = &fs->win[clst * 2 % SS(fs)];
demayer 0:6bf0743ece18 847 val = LD_WORD(p);
demayer 0:6bf0743ece18 848 break;
demayer 0:6bf0743ece18 849
demayer 0:6bf0743ece18 850 case FS_FAT32 :
demayer 0:6bf0743ece18 851 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
demayer 0:6bf0743ece18 852 p = &fs->win[clst * 4 % SS(fs)];
demayer 0:6bf0743ece18 853 val = LD_DWORD(p) & 0x0FFFFFFF;
demayer 0:6bf0743ece18 854 break;
demayer 0:6bf0743ece18 855
demayer 0:6bf0743ece18 856 default:
demayer 0:6bf0743ece18 857 val = 1; /* Internal error */
demayer 0:6bf0743ece18 858 }
demayer 0:6bf0743ece18 859 }
demayer 0:6bf0743ece18 860
demayer 0:6bf0743ece18 861 return val;
demayer 0:6bf0743ece18 862 }
demayer 0:6bf0743ece18 863
demayer 0:6bf0743ece18 864
demayer 0:6bf0743ece18 865
demayer 0:6bf0743ece18 866
demayer 0:6bf0743ece18 867 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 868 /* FAT access - Change value of a FAT entry */
demayer 0:6bf0743ece18 869 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 870 /* Hidden API for hacks and disk tools */
demayer 0:6bf0743ece18 871
demayer 0:6bf0743ece18 872 #if !_FS_READONLY
demayer 0:6bf0743ece18 873 FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 874 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 875 DWORD clst, /* FAT index number (cluster number) to be changed */
demayer 0:6bf0743ece18 876 DWORD val /* New value to be set to the entry */
demayer 0:6bf0743ece18 877 )
demayer 0:6bf0743ece18 878 {
demayer 0:6bf0743ece18 879 UINT bc;
demayer 0:6bf0743ece18 880 BYTE *p;
demayer 0:6bf0743ece18 881 FRESULT res;
demayer 0:6bf0743ece18 882
demayer 0:6bf0743ece18 883
demayer 0:6bf0743ece18 884 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
demayer 0:6bf0743ece18 885 res = FR_INT_ERR;
demayer 0:6bf0743ece18 886
demayer 0:6bf0743ece18 887 } else {
demayer 0:6bf0743ece18 888 switch (fs->fs_type) {
demayer 0:6bf0743ece18 889 case FS_FAT12 :
demayer 0:6bf0743ece18 890 bc = (UINT)clst; bc += bc / 2;
demayer 0:6bf0743ece18 891 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
demayer 0:6bf0743ece18 892 if (res != FR_OK) break;
demayer 0:6bf0743ece18 893 p = &fs->win[bc++ % SS(fs)];
demayer 0:6bf0743ece18 894 *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
demayer 0:6bf0743ece18 895 fs->wflag = 1;
demayer 0:6bf0743ece18 896 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
demayer 0:6bf0743ece18 897 if (res != FR_OK) break;
demayer 0:6bf0743ece18 898 p = &fs->win[bc % SS(fs)];
demayer 0:6bf0743ece18 899 *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
demayer 0:6bf0743ece18 900 fs->wflag = 1;
demayer 0:6bf0743ece18 901 break;
demayer 0:6bf0743ece18 902
demayer 0:6bf0743ece18 903 case FS_FAT16 :
demayer 0:6bf0743ece18 904 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
demayer 0:6bf0743ece18 905 if (res != FR_OK) break;
demayer 0:6bf0743ece18 906 p = &fs->win[clst * 2 % SS(fs)];
demayer 0:6bf0743ece18 907 ST_WORD(p, (WORD)val);
demayer 0:6bf0743ece18 908 fs->wflag = 1;
demayer 0:6bf0743ece18 909 break;
demayer 0:6bf0743ece18 910
demayer 0:6bf0743ece18 911 case FS_FAT32 :
demayer 0:6bf0743ece18 912 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
demayer 0:6bf0743ece18 913 if (res != FR_OK) break;
demayer 0:6bf0743ece18 914 p = &fs->win[clst * 4 % SS(fs)];
demayer 0:6bf0743ece18 915 val |= LD_DWORD(p) & 0xF0000000;
demayer 0:6bf0743ece18 916 ST_DWORD(p, val);
demayer 0:6bf0743ece18 917 fs->wflag = 1;
demayer 0:6bf0743ece18 918 break;
demayer 0:6bf0743ece18 919
demayer 0:6bf0743ece18 920 default :
demayer 0:6bf0743ece18 921 res = FR_INT_ERR;
demayer 0:6bf0743ece18 922 }
demayer 0:6bf0743ece18 923 }
demayer 0:6bf0743ece18 924
demayer 0:6bf0743ece18 925 return res;
demayer 0:6bf0743ece18 926 }
demayer 0:6bf0743ece18 927 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 928
demayer 0:6bf0743ece18 929
demayer 0:6bf0743ece18 930
demayer 0:6bf0743ece18 931
demayer 0:6bf0743ece18 932 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 933 /* FAT handling - Remove a cluster chain */
demayer 0:6bf0743ece18 934 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 935 #if !_FS_READONLY
demayer 0:6bf0743ece18 936 static
demayer 0:6bf0743ece18 937 FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 938 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 939 DWORD clst /* Cluster# to remove a chain from */
demayer 0:6bf0743ece18 940 )
demayer 0:6bf0743ece18 941 {
demayer 0:6bf0743ece18 942 FRESULT res;
demayer 0:6bf0743ece18 943 DWORD nxt;
demayer 0:6bf0743ece18 944 #if _USE_TRIM
demayer 0:6bf0743ece18 945 DWORD scl = clst, ecl = clst, rt[2];
demayer 0:6bf0743ece18 946 #endif
demayer 0:6bf0743ece18 947
demayer 0:6bf0743ece18 948 if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
demayer 0:6bf0743ece18 949 res = FR_INT_ERR;
demayer 0:6bf0743ece18 950
demayer 0:6bf0743ece18 951 } else {
demayer 0:6bf0743ece18 952 res = FR_OK;
demayer 0:6bf0743ece18 953 while (clst < fs->n_fatent) { /* Not a last link? */
demayer 0:6bf0743ece18 954 nxt = get_fat(fs, clst); /* Get cluster status */
demayer 0:6bf0743ece18 955 if (nxt == 0) break; /* Empty cluster? */
demayer 0:6bf0743ece18 956 if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
demayer 0:6bf0743ece18 957 if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
demayer 0:6bf0743ece18 958 res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
demayer 0:6bf0743ece18 959 if (res != FR_OK) break;
demayer 0:6bf0743ece18 960 if (fs->free_clust != 0xFFFFFFFF) { /* Update FSINFO */
demayer 0:6bf0743ece18 961 fs->free_clust++;
demayer 0:6bf0743ece18 962 fs->fsi_flag |= 1;
demayer 0:6bf0743ece18 963 }
demayer 0:6bf0743ece18 964 #if _USE_TRIM
demayer 0:6bf0743ece18 965 if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
demayer 0:6bf0743ece18 966 ecl = nxt;
demayer 0:6bf0743ece18 967 } else { /* End of contiguous clusters */
demayer 0:6bf0743ece18 968 rt[0] = clust2sect(fs, scl); /* Start sector */
demayer 0:6bf0743ece18 969 rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
demayer 0:6bf0743ece18 970 disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Erase the block */
demayer 0:6bf0743ece18 971 scl = ecl = nxt;
demayer 0:6bf0743ece18 972 }
demayer 0:6bf0743ece18 973 #endif
demayer 0:6bf0743ece18 974 clst = nxt; /* Next cluster */
demayer 0:6bf0743ece18 975 }
demayer 0:6bf0743ece18 976 }
demayer 0:6bf0743ece18 977
demayer 0:6bf0743ece18 978 return res;
demayer 0:6bf0743ece18 979 }
demayer 0:6bf0743ece18 980 #endif
demayer 0:6bf0743ece18 981
demayer 0:6bf0743ece18 982
demayer 0:6bf0743ece18 983
demayer 0:6bf0743ece18 984
demayer 0:6bf0743ece18 985 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 986 /* FAT handling - Stretch or Create a cluster chain */
demayer 0:6bf0743ece18 987 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 988 #if !_FS_READONLY
demayer 0:6bf0743ece18 989 static
demayer 0:6bf0743ece18 990 DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
demayer 0:6bf0743ece18 991 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 992 DWORD clst /* Cluster# to stretch, 0:Create a new chain */
demayer 0:6bf0743ece18 993 )
demayer 0:6bf0743ece18 994 {
demayer 0:6bf0743ece18 995 DWORD cs, ncl, scl;
demayer 0:6bf0743ece18 996 FRESULT res;
demayer 0:6bf0743ece18 997
demayer 0:6bf0743ece18 998
demayer 0:6bf0743ece18 999 if (clst == 0) { /* Create a new chain */
demayer 0:6bf0743ece18 1000 scl = fs->last_clust; /* Get suggested start point */
demayer 0:6bf0743ece18 1001 if (!scl || scl >= fs->n_fatent) scl = 1;
demayer 0:6bf0743ece18 1002 }
demayer 0:6bf0743ece18 1003 else { /* Stretch the current chain */
demayer 0:6bf0743ece18 1004 cs = get_fat(fs, clst); /* Check the cluster status */
demayer 0:6bf0743ece18 1005 if (cs < 2) return 1; /* Invalid value */
demayer 0:6bf0743ece18 1006 if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */
demayer 0:6bf0743ece18 1007 if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
demayer 0:6bf0743ece18 1008 scl = clst;
demayer 0:6bf0743ece18 1009 }
demayer 0:6bf0743ece18 1010
demayer 0:6bf0743ece18 1011 ncl = scl; /* Start cluster */
demayer 0:6bf0743ece18 1012 for (;;) {
demayer 0:6bf0743ece18 1013 ncl++; /* Next cluster */
demayer 0:6bf0743ece18 1014 if (ncl >= fs->n_fatent) { /* Check wrap around */
demayer 0:6bf0743ece18 1015 ncl = 2;
demayer 0:6bf0743ece18 1016 if (ncl > scl) return 0; /* No free cluster */
demayer 0:6bf0743ece18 1017 }
demayer 0:6bf0743ece18 1018 cs = get_fat(fs, ncl); /* Get the cluster status */
demayer 0:6bf0743ece18 1019 if (cs == 0) break; /* Found a free cluster */
demayer 0:6bf0743ece18 1020 if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
demayer 0:6bf0743ece18 1021 return cs;
demayer 0:6bf0743ece18 1022 if (ncl == scl) return 0; /* No free cluster */
demayer 0:6bf0743ece18 1023 }
demayer 0:6bf0743ece18 1024
demayer 0:6bf0743ece18 1025 res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
demayer 0:6bf0743ece18 1026 if (res == FR_OK && clst != 0) {
demayer 0:6bf0743ece18 1027 res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
demayer 0:6bf0743ece18 1028 }
demayer 0:6bf0743ece18 1029 if (res == FR_OK) {
demayer 0:6bf0743ece18 1030 fs->last_clust = ncl; /* Update FSINFO */
demayer 0:6bf0743ece18 1031 if (fs->free_clust != 0xFFFFFFFF) {
demayer 0:6bf0743ece18 1032 fs->free_clust--;
demayer 0:6bf0743ece18 1033 fs->fsi_flag |= 1;
demayer 0:6bf0743ece18 1034 }
demayer 0:6bf0743ece18 1035 } else {
demayer 0:6bf0743ece18 1036 ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
demayer 0:6bf0743ece18 1037 }
demayer 0:6bf0743ece18 1038
demayer 0:6bf0743ece18 1039 return ncl; /* Return new cluster number or error code */
demayer 0:6bf0743ece18 1040 }
demayer 0:6bf0743ece18 1041 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 1042
demayer 0:6bf0743ece18 1043
demayer 0:6bf0743ece18 1044
demayer 0:6bf0743ece18 1045
demayer 0:6bf0743ece18 1046 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1047 /* FAT handling - Convert offset into cluster with link map table */
demayer 0:6bf0743ece18 1048 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1049
demayer 0:6bf0743ece18 1050 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 1051 static
demayer 0:6bf0743ece18 1052 DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
demayer 0:6bf0743ece18 1053 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 1054 DWORD ofs /* File offset to be converted to cluster# */
demayer 0:6bf0743ece18 1055 )
demayer 0:6bf0743ece18 1056 {
demayer 0:6bf0743ece18 1057 DWORD cl, ncl, *tbl;
demayer 0:6bf0743ece18 1058
demayer 0:6bf0743ece18 1059
demayer 0:6bf0743ece18 1060 tbl = fp->cltbl + 1; /* Top of CLMT */
demayer 0:6bf0743ece18 1061 cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
demayer 0:6bf0743ece18 1062 for (;;) {
demayer 0:6bf0743ece18 1063 ncl = *tbl++; /* Number of cluters in the fragment */
demayer 0:6bf0743ece18 1064 if (!ncl) return 0; /* End of table? (error) */
demayer 0:6bf0743ece18 1065 if (cl < ncl) break; /* In this fragment? */
demayer 0:6bf0743ece18 1066 cl -= ncl; tbl++; /* Next fragment */
demayer 0:6bf0743ece18 1067 }
demayer 0:6bf0743ece18 1068 return cl + *tbl; /* Return the cluster number */
demayer 0:6bf0743ece18 1069 }
demayer 0:6bf0743ece18 1070 #endif /* _USE_FASTSEEK */
demayer 0:6bf0743ece18 1071
demayer 0:6bf0743ece18 1072
demayer 0:6bf0743ece18 1073
demayer 0:6bf0743ece18 1074
demayer 0:6bf0743ece18 1075 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1076 /* Directory handling - Set directory index */
demayer 0:6bf0743ece18 1077 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1078
demayer 0:6bf0743ece18 1079 static
demayer 0:6bf0743ece18 1080 FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 1081 FATFS_DIR* dp, /* Pointer to directory object */
demayer 0:6bf0743ece18 1082 UINT idx /* Index of directory table */
demayer 0:6bf0743ece18 1083 )
demayer 0:6bf0743ece18 1084 {
demayer 0:6bf0743ece18 1085 DWORD clst, sect;
demayer 0:6bf0743ece18 1086 UINT ic;
demayer 0:6bf0743ece18 1087
demayer 0:6bf0743ece18 1088
demayer 0:6bf0743ece18 1089 dp->index = (WORD)idx; /* Current index */
demayer 0:6bf0743ece18 1090 clst = dp->sclust; /* Table start cluster (0:root) */
demayer 0:6bf0743ece18 1091 if (clst == 1 || clst >= dp->fs->n_fatent) /* Check start cluster range */
demayer 0:6bf0743ece18 1092 return FR_INT_ERR;
demayer 0:6bf0743ece18 1093 if (!clst && dp->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
demayer 0:6bf0743ece18 1094 clst = dp->fs->dirbase;
demayer 0:6bf0743ece18 1095
demayer 0:6bf0743ece18 1096 if (clst == 0) { /* Static table (root-directory in FAT12/16) */
demayer 0:6bf0743ece18 1097 if (idx >= dp->fs->n_rootdir) /* Is index out of range? */
demayer 0:6bf0743ece18 1098 return FR_INT_ERR;
demayer 0:6bf0743ece18 1099 sect = dp->fs->dirbase;
demayer 0:6bf0743ece18 1100 }
demayer 0:6bf0743ece18 1101 else { /* Dynamic table (root-directory in FAT32 or sub-directory) */
demayer 0:6bf0743ece18 1102 ic = SS(dp->fs) / SZ_DIRE * dp->fs->csize; /* Entries per cluster */
demayer 0:6bf0743ece18 1103 while (idx >= ic) { /* Follow cluster chain */
demayer 0:6bf0743ece18 1104 clst = get_fat(dp->fs, clst); /* Get next cluster */
demayer 0:6bf0743ece18 1105 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
demayer 0:6bf0743ece18 1106 if (clst < 2 || clst >= dp->fs->n_fatent) /* Reached to end of table or internal error */
demayer 0:6bf0743ece18 1107 return FR_INT_ERR;
demayer 0:6bf0743ece18 1108 idx -= ic;
demayer 0:6bf0743ece18 1109 }
demayer 0:6bf0743ece18 1110 sect = clust2sect(dp->fs, clst);
demayer 0:6bf0743ece18 1111 }
demayer 0:6bf0743ece18 1112 dp->clust = clst; /* Current cluster# */
demayer 0:6bf0743ece18 1113 if (!sect) return FR_INT_ERR;
demayer 0:6bf0743ece18 1114 dp->sect = sect + idx / (SS(dp->fs) / SZ_DIRE); /* Sector# of the directory entry */
demayer 0:6bf0743ece18 1115 dp->dir = dp->fs->win + (idx % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Ptr to the entry in the sector */
demayer 0:6bf0743ece18 1116
demayer 0:6bf0743ece18 1117 return FR_OK;
demayer 0:6bf0743ece18 1118 }
demayer 0:6bf0743ece18 1119
demayer 0:6bf0743ece18 1120
demayer 0:6bf0743ece18 1121
demayer 0:6bf0743ece18 1122
demayer 0:6bf0743ece18 1123 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1124 /* Directory handling - Move directory table index next */
demayer 0:6bf0743ece18 1125 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1126
demayer 0:6bf0743ece18 1127 static
demayer 0:6bf0743ece18 1128 FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
demayer 0:6bf0743ece18 1129 FATFS_DIR* dp, /* Pointer to the directory object */
demayer 0:6bf0743ece18 1130 int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
demayer 0:6bf0743ece18 1131 )
demayer 0:6bf0743ece18 1132 {
demayer 0:6bf0743ece18 1133 DWORD clst;
demayer 0:6bf0743ece18 1134 UINT i;
demayer 0:6bf0743ece18 1135 #if !_FS_READONLY
demayer 0:6bf0743ece18 1136 UINT c;
demayer 0:6bf0743ece18 1137 #endif
demayer 0:6bf0743ece18 1138
demayer 0:6bf0743ece18 1139
demayer 0:6bf0743ece18 1140 i = dp->index + 1;
demayer 0:6bf0743ece18 1141 if (!(i & 0xFFFF) || !dp->sect) /* Report EOT when index has reached 65535 */
demayer 0:6bf0743ece18 1142 return FR_NO_FILE;
demayer 0:6bf0743ece18 1143
demayer 0:6bf0743ece18 1144 if (!(i % (SS(dp->fs) / SZ_DIRE))) { /* Sector changed? */
demayer 0:6bf0743ece18 1145 dp->sect++; /* Next sector */
demayer 0:6bf0743ece18 1146
demayer 0:6bf0743ece18 1147 if (!dp->clust) { /* Static table */
demayer 0:6bf0743ece18 1148 if (i >= dp->fs->n_rootdir) /* Report EOT if it reached end of static table */
demayer 0:6bf0743ece18 1149 return FR_NO_FILE;
demayer 0:6bf0743ece18 1150 }
demayer 0:6bf0743ece18 1151 else { /* Dynamic table */
demayer 0:6bf0743ece18 1152 if (((i / (SS(dp->fs) / SZ_DIRE)) & (dp->fs->csize - 1)) == 0) { /* Cluster changed? */
demayer 0:6bf0743ece18 1153 clst = get_fat(dp->fs, dp->clust); /* Get next cluster */
demayer 0:6bf0743ece18 1154 if (clst <= 1) return FR_INT_ERR;
demayer 0:6bf0743ece18 1155 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
demayer 0:6bf0743ece18 1156 if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */
demayer 0:6bf0743ece18 1157 #if !_FS_READONLY
demayer 0:6bf0743ece18 1158 if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT */
demayer 0:6bf0743ece18 1159 clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */
demayer 0:6bf0743ece18 1160 if (clst == 0) return FR_DENIED; /* No free cluster */
demayer 0:6bf0743ece18 1161 if (clst == 1) return FR_INT_ERR;
demayer 0:6bf0743ece18 1162 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
demayer 0:6bf0743ece18 1163 /* Clean-up stretched table */
demayer 0:6bf0743ece18 1164 if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */
demayer 0:6bf0743ece18 1165 mem_set(dp->fs->win, 0, SS(dp->fs)); /* Clear window buffer */
demayer 0:6bf0743ece18 1166 dp->fs->winsect = clust2sect(dp->fs, clst); /* Cluster start sector */
demayer 0:6bf0743ece18 1167 for (c = 0; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */
demayer 0:6bf0743ece18 1168 dp->fs->wflag = 1;
demayer 0:6bf0743ece18 1169 if (sync_window(dp->fs)) return FR_DISK_ERR;
demayer 0:6bf0743ece18 1170 dp->fs->winsect++;
demayer 0:6bf0743ece18 1171 }
demayer 0:6bf0743ece18 1172 dp->fs->winsect -= c; /* Rewind window offset */
demayer 0:6bf0743ece18 1173 #else
demayer 0:6bf0743ece18 1174 if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT (this is to suppress warning) */
demayer 0:6bf0743ece18 1175 return FR_NO_FILE; /* Report EOT */
demayer 0:6bf0743ece18 1176 #endif
demayer 0:6bf0743ece18 1177 }
demayer 0:6bf0743ece18 1178 dp->clust = clst; /* Initialize data for new cluster */
demayer 0:6bf0743ece18 1179 dp->sect = clust2sect(dp->fs, clst);
demayer 0:6bf0743ece18 1180 }
demayer 0:6bf0743ece18 1181 }
demayer 0:6bf0743ece18 1182 }
demayer 0:6bf0743ece18 1183
demayer 0:6bf0743ece18 1184 dp->index = (WORD)i; /* Current index */
demayer 0:6bf0743ece18 1185 dp->dir = dp->fs->win + (i % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Current entry in the window */
demayer 0:6bf0743ece18 1186
demayer 0:6bf0743ece18 1187 return FR_OK;
demayer 0:6bf0743ece18 1188 }
demayer 0:6bf0743ece18 1189
demayer 0:6bf0743ece18 1190
demayer 0:6bf0743ece18 1191
demayer 0:6bf0743ece18 1192
demayer 0:6bf0743ece18 1193 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1194 /* Directory handling - Reserve directory entry */
demayer 0:6bf0743ece18 1195 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1196
demayer 0:6bf0743ece18 1197 #if !_FS_READONLY
demayer 0:6bf0743ece18 1198 static
demayer 0:6bf0743ece18 1199 FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 1200 FATFS_DIR* dp, /* Pointer to the directory object */
demayer 0:6bf0743ece18 1201 UINT nent /* Number of contiguous entries to allocate (1-21) */
demayer 0:6bf0743ece18 1202 )
demayer 0:6bf0743ece18 1203 {
demayer 0:6bf0743ece18 1204 FRESULT res;
demayer 0:6bf0743ece18 1205 UINT n;
demayer 0:6bf0743ece18 1206
demayer 0:6bf0743ece18 1207
demayer 0:6bf0743ece18 1208 res = dir_sdi(dp, 0);
demayer 0:6bf0743ece18 1209 if (res == FR_OK) {
demayer 0:6bf0743ece18 1210 n = 0;
demayer 0:6bf0743ece18 1211 do {
demayer 0:6bf0743ece18 1212 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1213 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1214 if (dp->dir[0] == DDEM || dp->dir[0] == 0) { /* Is it a free entry? */
demayer 0:6bf0743ece18 1215 if (++n == nent) break; /* A block of contiguous free entries is found */
demayer 0:6bf0743ece18 1216 } else {
demayer 0:6bf0743ece18 1217 n = 0; /* Not a blank entry. Restart to search */
demayer 0:6bf0743ece18 1218 }
demayer 0:6bf0743ece18 1219 res = dir_next(dp, 1); /* Next entry with table stretch enabled */
demayer 0:6bf0743ece18 1220 } while (res == FR_OK);
demayer 0:6bf0743ece18 1221 }
demayer 0:6bf0743ece18 1222 if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
demayer 0:6bf0743ece18 1223 return res;
demayer 0:6bf0743ece18 1224 }
demayer 0:6bf0743ece18 1225 #endif
demayer 0:6bf0743ece18 1226
demayer 0:6bf0743ece18 1227
demayer 0:6bf0743ece18 1228
demayer 0:6bf0743ece18 1229
demayer 0:6bf0743ece18 1230 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1231 /* Directory handling - Load/Store start cluster number */
demayer 0:6bf0743ece18 1232 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1233
demayer 0:6bf0743ece18 1234 static
demayer 0:6bf0743ece18 1235 DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
demayer 0:6bf0743ece18 1236 FATFS* fs, /* Pointer to the fs object */
demayer 0:6bf0743ece18 1237 const BYTE* dir /* Pointer to the SFN entry */
demayer 0:6bf0743ece18 1238 )
demayer 0:6bf0743ece18 1239 {
demayer 0:6bf0743ece18 1240 DWORD cl;
demayer 0:6bf0743ece18 1241
demayer 0:6bf0743ece18 1242 cl = LD_WORD(dir + DIR_FstClusLO);
demayer 0:6bf0743ece18 1243 if (fs->fs_type == FS_FAT32)
demayer 0:6bf0743ece18 1244 cl |= (DWORD)LD_WORD(dir + DIR_FstClusHI) << 16;
demayer 0:6bf0743ece18 1245
demayer 0:6bf0743ece18 1246 return cl;
demayer 0:6bf0743ece18 1247 }
demayer 0:6bf0743ece18 1248
demayer 0:6bf0743ece18 1249
demayer 0:6bf0743ece18 1250 #if !_FS_READONLY
demayer 0:6bf0743ece18 1251 static
demayer 0:6bf0743ece18 1252 void st_clust (
demayer 0:6bf0743ece18 1253 BYTE* dir, /* Pointer to the SFN entry */
demayer 0:6bf0743ece18 1254 DWORD cl /* Value to be set */
demayer 0:6bf0743ece18 1255 )
demayer 0:6bf0743ece18 1256 {
demayer 0:6bf0743ece18 1257 ST_WORD(dir + DIR_FstClusLO, cl);
demayer 0:6bf0743ece18 1258 ST_WORD(dir + DIR_FstClusHI, cl >> 16);
demayer 0:6bf0743ece18 1259 }
demayer 0:6bf0743ece18 1260 #endif
demayer 0:6bf0743ece18 1261
demayer 0:6bf0743ece18 1262
demayer 0:6bf0743ece18 1263
demayer 0:6bf0743ece18 1264
demayer 0:6bf0743ece18 1265 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1266 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
demayer 0:6bf0743ece18 1267 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1268 #if _USE_LFN
demayer 0:6bf0743ece18 1269 static
demayer 0:6bf0743ece18 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 */
demayer 0:6bf0743ece18 1271
demayer 0:6bf0743ece18 1272
demayer 0:6bf0743ece18 1273 static
demayer 0:6bf0743ece18 1274 int cmp_lfn ( /* 1:matched, 0:not matched */
demayer 0:6bf0743ece18 1275 WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
demayer 0:6bf0743ece18 1276 BYTE* dir /* Pointer to the directory entry containing the part of LFN */
demayer 0:6bf0743ece18 1277 )
demayer 0:6bf0743ece18 1278 {
demayer 0:6bf0743ece18 1279 UINT i, s;
demayer 0:6bf0743ece18 1280 WCHAR wc, uc;
demayer 0:6bf0743ece18 1281
demayer 0:6bf0743ece18 1282
demayer 0:6bf0743ece18 1283 if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
demayer 0:6bf0743ece18 1284
demayer 0:6bf0743ece18 1285 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
demayer 0:6bf0743ece18 1286
demayer 0:6bf0743ece18 1287 for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
demayer 0:6bf0743ece18 1288 uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
demayer 0:6bf0743ece18 1289 if (wc) {
demayer 0:6bf0743ece18 1290 if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) /* Compare it */
demayer 0:6bf0743ece18 1291 return 0; /* Not matched */
demayer 0:6bf0743ece18 1292 wc = uc;
demayer 0:6bf0743ece18 1293 } else {
demayer 0:6bf0743ece18 1294 if (uc != 0xFFFF) return 0; /* Check filler */
demayer 0:6bf0743ece18 1295 }
demayer 0:6bf0743ece18 1296 }
demayer 0:6bf0743ece18 1297
demayer 0:6bf0743ece18 1298 if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) /* Last segment matched but different length */
demayer 0:6bf0743ece18 1299 return 0;
demayer 0:6bf0743ece18 1300
demayer 0:6bf0743ece18 1301 return 1; /* The part of LFN matched */
demayer 0:6bf0743ece18 1302 }
demayer 0:6bf0743ece18 1303
demayer 0:6bf0743ece18 1304
demayer 0:6bf0743ece18 1305
demayer 0:6bf0743ece18 1306 static
demayer 0:6bf0743ece18 1307 int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
demayer 0:6bf0743ece18 1308 WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
demayer 0:6bf0743ece18 1309 BYTE* dir /* Pointer to the LFN entry */
demayer 0:6bf0743ece18 1310 )
demayer 0:6bf0743ece18 1311 {
demayer 0:6bf0743ece18 1312 UINT i, s;
demayer 0:6bf0743ece18 1313 WCHAR wc, uc;
demayer 0:6bf0743ece18 1314
demayer 0:6bf0743ece18 1315
demayer 0:6bf0743ece18 1316 if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
demayer 0:6bf0743ece18 1317
demayer 0:6bf0743ece18 1318 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
demayer 0:6bf0743ece18 1319
demayer 0:6bf0743ece18 1320 for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
demayer 0:6bf0743ece18 1321 uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
demayer 0:6bf0743ece18 1322 if (wc) {
demayer 0:6bf0743ece18 1323 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
demayer 0:6bf0743ece18 1324 lfnbuf[i++] = wc = uc; /* Store it */
demayer 0:6bf0743ece18 1325 } else {
demayer 0:6bf0743ece18 1326 if (uc != 0xFFFF) return 0; /* Check filler */
demayer 0:6bf0743ece18 1327 }
demayer 0:6bf0743ece18 1328 }
demayer 0:6bf0743ece18 1329
demayer 0:6bf0743ece18 1330 if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */
demayer 0:6bf0743ece18 1331 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
demayer 0:6bf0743ece18 1332 lfnbuf[i] = 0;
demayer 0:6bf0743ece18 1333 }
demayer 0:6bf0743ece18 1334
demayer 0:6bf0743ece18 1335 return 1; /* The part of LFN is valid */
demayer 0:6bf0743ece18 1336 }
demayer 0:6bf0743ece18 1337
demayer 0:6bf0743ece18 1338
demayer 0:6bf0743ece18 1339 #if !_FS_READONLY
demayer 0:6bf0743ece18 1340 static
demayer 0:6bf0743ece18 1341 void fit_lfn (
demayer 0:6bf0743ece18 1342 const WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
demayer 0:6bf0743ece18 1343 BYTE* dir, /* Pointer to the LFN entry to be processed */
demayer 0:6bf0743ece18 1344 BYTE ord, /* LFN order (1-20) */
demayer 0:6bf0743ece18 1345 BYTE sum /* Checksum of the corresponding SFN */
demayer 0:6bf0743ece18 1346 )
demayer 0:6bf0743ece18 1347 {
demayer 0:6bf0743ece18 1348 UINT i, s;
demayer 0:6bf0743ece18 1349 WCHAR wc;
demayer 0:6bf0743ece18 1350
demayer 0:6bf0743ece18 1351
demayer 0:6bf0743ece18 1352 dir[LDIR_Chksum] = sum; /* Set checksum */
demayer 0:6bf0743ece18 1353 dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
demayer 0:6bf0743ece18 1354 dir[LDIR_Type] = 0;
demayer 0:6bf0743ece18 1355 ST_WORD(dir + LDIR_FstClusLO, 0);
demayer 0:6bf0743ece18 1356
demayer 0:6bf0743ece18 1357 i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
demayer 0:6bf0743ece18 1358 s = wc = 0;
demayer 0:6bf0743ece18 1359 do {
demayer 0:6bf0743ece18 1360 if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective character */
demayer 0:6bf0743ece18 1361 ST_WORD(dir+LfnOfs[s], wc); /* Put it */
demayer 0:6bf0743ece18 1362 if (!wc) wc = 0xFFFF; /* Padding characters following last character */
demayer 0:6bf0743ece18 1363 } while (++s < 13);
demayer 0:6bf0743ece18 1364 if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLEF; /* Bottom LFN part is the start of LFN sequence */
demayer 0:6bf0743ece18 1365 dir[LDIR_Ord] = ord; /* Set the LFN order */
demayer 0:6bf0743ece18 1366 }
demayer 0:6bf0743ece18 1367
demayer 0:6bf0743ece18 1368 #endif
demayer 0:6bf0743ece18 1369 #endif
demayer 0:6bf0743ece18 1370
demayer 0:6bf0743ece18 1371
demayer 0:6bf0743ece18 1372
demayer 0:6bf0743ece18 1373
demayer 0:6bf0743ece18 1374 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1375 /* Create numbered name */
demayer 0:6bf0743ece18 1376 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1377 #if _USE_LFN
demayer 0:6bf0743ece18 1378 static
demayer 0:6bf0743ece18 1379 void gen_numname (
demayer 0:6bf0743ece18 1380 BYTE* dst, /* Pointer to the buffer to store numbered SFN */
demayer 0:6bf0743ece18 1381 const BYTE* src, /* Pointer to SFN */
demayer 0:6bf0743ece18 1382 const WCHAR* lfn, /* Pointer to LFN */
demayer 0:6bf0743ece18 1383 UINT seq /* Sequence number */
demayer 0:6bf0743ece18 1384 )
demayer 0:6bf0743ece18 1385 {
demayer 0:6bf0743ece18 1386 BYTE ns[8], c;
demayer 0:6bf0743ece18 1387 UINT i, j;
demayer 0:6bf0743ece18 1388 WCHAR wc;
demayer 0:6bf0743ece18 1389 DWORD sr;
demayer 0:6bf0743ece18 1390
demayer 0:6bf0743ece18 1391
demayer 0:6bf0743ece18 1392 mem_cpy(dst, src, 11);
demayer 0:6bf0743ece18 1393
demayer 0:6bf0743ece18 1394 if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
demayer 0:6bf0743ece18 1395 sr = seq;
demayer 0:6bf0743ece18 1396 while (*lfn) { /* Create a CRC */
demayer 0:6bf0743ece18 1397 wc = *lfn++;
demayer 0:6bf0743ece18 1398 for (i = 0; i < 16; i++) {
demayer 0:6bf0743ece18 1399 sr = (sr << 1) + (wc & 1);
demayer 0:6bf0743ece18 1400 wc >>= 1;
demayer 0:6bf0743ece18 1401 if (sr & 0x10000) sr ^= 0x11021;
demayer 0:6bf0743ece18 1402 }
demayer 0:6bf0743ece18 1403 }
demayer 0:6bf0743ece18 1404 seq = (UINT)sr;
demayer 0:6bf0743ece18 1405 }
demayer 0:6bf0743ece18 1406
demayer 0:6bf0743ece18 1407 /* itoa (hexdecimal) */
demayer 0:6bf0743ece18 1408 i = 7;
demayer 0:6bf0743ece18 1409 do {
demayer 0:6bf0743ece18 1410 c = (seq % 16) + '0';
demayer 0:6bf0743ece18 1411 if (c > '9') c += 7;
demayer 0:6bf0743ece18 1412 ns[i--] = c;
demayer 0:6bf0743ece18 1413 seq /= 16;
demayer 0:6bf0743ece18 1414 } while (seq);
demayer 0:6bf0743ece18 1415 ns[i] = '~';
demayer 0:6bf0743ece18 1416
demayer 0:6bf0743ece18 1417 /* Append the number */
demayer 0:6bf0743ece18 1418 for (j = 0; j < i && dst[j] != ' '; j++) {
demayer 0:6bf0743ece18 1419 if (IsDBCS1(dst[j])) {
demayer 0:6bf0743ece18 1420 if (j == i - 1) break;
demayer 0:6bf0743ece18 1421 j++;
demayer 0:6bf0743ece18 1422 }
demayer 0:6bf0743ece18 1423 }
demayer 0:6bf0743ece18 1424 do {
demayer 0:6bf0743ece18 1425 dst[j++] = (i < 8) ? ns[i++] : ' ';
demayer 0:6bf0743ece18 1426 } while (j < 8);
demayer 0:6bf0743ece18 1427 }
demayer 0:6bf0743ece18 1428 #endif
demayer 0:6bf0743ece18 1429
demayer 0:6bf0743ece18 1430
demayer 0:6bf0743ece18 1431
demayer 0:6bf0743ece18 1432
demayer 0:6bf0743ece18 1433 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1434 /* Calculate checksum of an SFN entry */
demayer 0:6bf0743ece18 1435 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1436 #if _USE_LFN
demayer 0:6bf0743ece18 1437 static
demayer 0:6bf0743ece18 1438 BYTE sum_sfn (
demayer 0:6bf0743ece18 1439 const BYTE* dir /* Pointer to the SFN entry */
demayer 0:6bf0743ece18 1440 )
demayer 0:6bf0743ece18 1441 {
demayer 0:6bf0743ece18 1442 BYTE sum = 0;
demayer 0:6bf0743ece18 1443 UINT n = 11;
demayer 0:6bf0743ece18 1444
demayer 0:6bf0743ece18 1445 do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
demayer 0:6bf0743ece18 1446 return sum;
demayer 0:6bf0743ece18 1447 }
demayer 0:6bf0743ece18 1448 #endif
demayer 0:6bf0743ece18 1449
demayer 0:6bf0743ece18 1450
demayer 0:6bf0743ece18 1451
demayer 0:6bf0743ece18 1452
demayer 0:6bf0743ece18 1453 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1454 /* Directory handling - Find an object in the directory */
demayer 0:6bf0743ece18 1455 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1456
demayer 0:6bf0743ece18 1457 static
demayer 0:6bf0743ece18 1458 FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
demayer 0:6bf0743ece18 1459 FATFS_DIR* dp /* Pointer to the directory object linked to the file name */
demayer 0:6bf0743ece18 1460 )
demayer 0:6bf0743ece18 1461 {
demayer 0:6bf0743ece18 1462 FRESULT res;
demayer 0:6bf0743ece18 1463 BYTE c, *dir;
demayer 0:6bf0743ece18 1464 #if _USE_LFN
demayer 0:6bf0743ece18 1465 BYTE a, ord, sum;
demayer 0:6bf0743ece18 1466 #endif
demayer 0:6bf0743ece18 1467
demayer 0:6bf0743ece18 1468 res = dir_sdi(dp, 0); /* Rewind directory object */
demayer 0:6bf0743ece18 1469 if (res != FR_OK) return res;
demayer 0:6bf0743ece18 1470
demayer 0:6bf0743ece18 1471 #if _USE_LFN
demayer 0:6bf0743ece18 1472 ord = sum = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
demayer 0:6bf0743ece18 1473 #endif
demayer 0:6bf0743ece18 1474 do {
demayer 0:6bf0743ece18 1475 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1476 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1477 dir = dp->dir; /* Ptr to the directory entry of current index */
demayer 0:6bf0743ece18 1478 c = dir[DIR_Name];
demayer 0:6bf0743ece18 1479 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
demayer 0:6bf0743ece18 1480 #if _USE_LFN /* LFN configuration */
demayer 0:6bf0743ece18 1481 a = dir[DIR_Attr] & AM_MASK;
demayer 0:6bf0743ece18 1482 if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
demayer 0:6bf0743ece18 1483 ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
demayer 0:6bf0743ece18 1484 } else {
demayer 0:6bf0743ece18 1485 if (a == AM_LFN) { /* An LFN entry is found */
demayer 0:6bf0743ece18 1486 if (dp->lfn) {
demayer 0:6bf0743ece18 1487 if (c & LLEF) { /* Is it start of LFN sequence? */
demayer 0:6bf0743ece18 1488 sum = dir[LDIR_Chksum];
demayer 0:6bf0743ece18 1489 c &= ~LLEF; ord = c; /* LFN start order */
demayer 0:6bf0743ece18 1490 dp->lfn_idx = dp->index; /* Start index of LFN */
demayer 0:6bf0743ece18 1491 }
demayer 0:6bf0743ece18 1492 /* Check validity of the LFN entry and compare it with given name */
demayer 0:6bf0743ece18 1493 ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
demayer 0:6bf0743ece18 1494 }
demayer 0:6bf0743ece18 1495 } else { /* An SFN entry is found */
demayer 0:6bf0743ece18 1496 if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
demayer 0:6bf0743ece18 1497 if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break; /* SFN matched? */
demayer 0:6bf0743ece18 1498 ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
demayer 0:6bf0743ece18 1499 }
demayer 0:6bf0743ece18 1500 }
demayer 0:6bf0743ece18 1501 #else /* Non LFN configuration */
demayer 0:6bf0743ece18 1502 if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */
demayer 0:6bf0743ece18 1503 break;
demayer 0:6bf0743ece18 1504 #endif
demayer 0:6bf0743ece18 1505 res = dir_next(dp, 0); /* Next entry */
demayer 0:6bf0743ece18 1506 } while (res == FR_OK);
demayer 0:6bf0743ece18 1507
demayer 0:6bf0743ece18 1508 return res;
demayer 0:6bf0743ece18 1509 }
demayer 0:6bf0743ece18 1510
demayer 0:6bf0743ece18 1511
demayer 0:6bf0743ece18 1512
demayer 0:6bf0743ece18 1513
demayer 0:6bf0743ece18 1514 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1515 /* Read an object from the directory */
demayer 0:6bf0743ece18 1516 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1517 #if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2
demayer 0:6bf0743ece18 1518 static
demayer 0:6bf0743ece18 1519 FRESULT dir_read (
demayer 0:6bf0743ece18 1520 FATFS_DIR* dp, /* Pointer to the directory object */
demayer 0:6bf0743ece18 1521 int vol /* Filtered by 0:file/directory or 1:volume label */
demayer 0:6bf0743ece18 1522 )
demayer 0:6bf0743ece18 1523 {
demayer 0:6bf0743ece18 1524 FRESULT res;
demayer 0:6bf0743ece18 1525 BYTE a, c, *dir;
demayer 0:6bf0743ece18 1526 #if _USE_LFN
demayer 0:6bf0743ece18 1527 BYTE ord = 0xFF, sum = 0xFF;
demayer 0:6bf0743ece18 1528 #endif
demayer 0:6bf0743ece18 1529
demayer 0:6bf0743ece18 1530 res = FR_NO_FILE;
demayer 0:6bf0743ece18 1531 while (dp->sect) {
demayer 0:6bf0743ece18 1532 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1533 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1534 dir = dp->dir; /* Ptr to the directory entry of current index */
demayer 0:6bf0743ece18 1535 c = dir[DIR_Name];
demayer 0:6bf0743ece18 1536 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
demayer 0:6bf0743ece18 1537 a = dir[DIR_Attr] & AM_MASK;
demayer 0:6bf0743ece18 1538 #if _USE_LFN /* LFN configuration */
demayer 0:6bf0743ece18 1539 if (c == DDEM || (!_FS_RPATH && c == '.') || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
demayer 0:6bf0743ece18 1540 ord = 0xFF;
demayer 0:6bf0743ece18 1541 } else {
demayer 0:6bf0743ece18 1542 if (a == AM_LFN) { /* An LFN entry is found */
demayer 0:6bf0743ece18 1543 if (c & LLEF) { /* Is it start of LFN sequence? */
demayer 0:6bf0743ece18 1544 sum = dir[LDIR_Chksum];
demayer 0:6bf0743ece18 1545 c &= ~LLEF; ord = c;
demayer 0:6bf0743ece18 1546 dp->lfn_idx = dp->index;
demayer 0:6bf0743ece18 1547 }
demayer 0:6bf0743ece18 1548 /* Check LFN validity and capture it */
demayer 0:6bf0743ece18 1549 ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
demayer 0:6bf0743ece18 1550 } else { /* An SFN entry is found */
demayer 0:6bf0743ece18 1551 if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
demayer 0:6bf0743ece18 1552 dp->lfn_idx = 0xFFFF; /* It has no LFN. */
demayer 0:6bf0743ece18 1553 break;
demayer 0:6bf0743ece18 1554 }
demayer 0:6bf0743ece18 1555 }
demayer 0:6bf0743ece18 1556 #else /* Non LFN configuration */
demayer 0:6bf0743ece18 1557 if (c != DDEM && (_FS_RPATH || c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) /* Is it a valid entry? */
demayer 0:6bf0743ece18 1558 break;
demayer 0:6bf0743ece18 1559 #endif
demayer 0:6bf0743ece18 1560 res = dir_next(dp, 0); /* Next entry */
demayer 0:6bf0743ece18 1561 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1562 }
demayer 0:6bf0743ece18 1563
demayer 0:6bf0743ece18 1564 if (res != FR_OK) dp->sect = 0;
demayer 0:6bf0743ece18 1565
demayer 0:6bf0743ece18 1566 return res;
demayer 0:6bf0743ece18 1567 }
demayer 0:6bf0743ece18 1568 #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
demayer 0:6bf0743ece18 1569
demayer 0:6bf0743ece18 1570
demayer 0:6bf0743ece18 1571
demayer 0:6bf0743ece18 1572
demayer 0:6bf0743ece18 1573 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1574 /* Register an object to the directory */
demayer 0:6bf0743ece18 1575 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1576 #if !_FS_READONLY
demayer 0:6bf0743ece18 1577 static
demayer 0:6bf0743ece18 1578 FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
demayer 0:6bf0743ece18 1579 FATFS_DIR* dp /* Target directory with object name to be created */
demayer 0:6bf0743ece18 1580 )
demayer 0:6bf0743ece18 1581 {
demayer 0:6bf0743ece18 1582 FRESULT res;
demayer 0:6bf0743ece18 1583 #if _USE_LFN /* LFN configuration */
demayer 0:6bf0743ece18 1584 UINT n, nent;
demayer 0:6bf0743ece18 1585 BYTE sn[12], *fn, sum;
demayer 0:6bf0743ece18 1586 WCHAR *lfn;
demayer 0:6bf0743ece18 1587
demayer 0:6bf0743ece18 1588
demayer 0:6bf0743ece18 1589 fn = dp->fn; lfn = dp->lfn;
demayer 0:6bf0743ece18 1590 mem_cpy(sn, fn, 12);
demayer 0:6bf0743ece18 1591
demayer 0:6bf0743ece18 1592 if (_FS_RPATH && (sn[NSFLAG] & NS_DOT)) /* Cannot create dot entry */
demayer 0:6bf0743ece18 1593 return FR_INVALID_NAME;
demayer 0:6bf0743ece18 1594
demayer 0:6bf0743ece18 1595 if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
demayer 0:6bf0743ece18 1596 fn[NSFLAG] = 0; dp->lfn = 0; /* Find only SFN */
demayer 0:6bf0743ece18 1597 for (n = 1; n < 100; n++) {
demayer 0:6bf0743ece18 1598 gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
demayer 0:6bf0743ece18 1599 res = dir_find(dp); /* Check if the name collides with existing SFN */
demayer 0:6bf0743ece18 1600 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1601 }
demayer 0:6bf0743ece18 1602 if (n == 100) return FR_DENIED; /* Abort if too many collisions */
demayer 0:6bf0743ece18 1603 if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
demayer 0:6bf0743ece18 1604 fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;
demayer 0:6bf0743ece18 1605 }
demayer 0:6bf0743ece18 1606
demayer 0:6bf0743ece18 1607 if (sn[NSFLAG] & NS_LFN) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */
demayer 0:6bf0743ece18 1608 for (n = 0; lfn[n]; n++) ;
demayer 0:6bf0743ece18 1609 nent = (n + 25) / 13;
demayer 0:6bf0743ece18 1610 } else { /* Otherwise allocate an entry for an SFN */
demayer 0:6bf0743ece18 1611 nent = 1;
demayer 0:6bf0743ece18 1612 }
demayer 0:6bf0743ece18 1613 res = dir_alloc(dp, nent); /* Allocate entries */
demayer 0:6bf0743ece18 1614
demayer 0:6bf0743ece18 1615 if (res == FR_OK && --nent) { /* Set LFN entry if needed */
demayer 0:6bf0743ece18 1616 res = dir_sdi(dp, dp->index - nent);
demayer 0:6bf0743ece18 1617 if (res == FR_OK) {
demayer 0:6bf0743ece18 1618 sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
demayer 0:6bf0743ece18 1619 do { /* Store LFN entries in bottom first */
demayer 0:6bf0743ece18 1620 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1621 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1622 fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);
demayer 0:6bf0743ece18 1623 dp->fs->wflag = 1;
demayer 0:6bf0743ece18 1624 res = dir_next(dp, 0); /* Next entry */
demayer 0:6bf0743ece18 1625 } while (res == FR_OK && --nent);
demayer 0:6bf0743ece18 1626 }
demayer 0:6bf0743ece18 1627 }
demayer 0:6bf0743ece18 1628 #else /* Non LFN configuration */
demayer 0:6bf0743ece18 1629 res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
demayer 0:6bf0743ece18 1630 #endif
demayer 0:6bf0743ece18 1631
demayer 0:6bf0743ece18 1632 if (res == FR_OK) { /* Set SFN entry */
demayer 0:6bf0743ece18 1633 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1634 if (res == FR_OK) {
demayer 0:6bf0743ece18 1635 mem_set(dp->dir, 0, SZ_DIRE); /* Clean the entry */
demayer 0:6bf0743ece18 1636 mem_cpy(dp->dir, dp->fn, 11); /* Put SFN */
demayer 0:6bf0743ece18 1637 #if _USE_LFN
demayer 0:6bf0743ece18 1638 dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
demayer 0:6bf0743ece18 1639 #endif
demayer 0:6bf0743ece18 1640 dp->fs->wflag = 1;
demayer 0:6bf0743ece18 1641 }
demayer 0:6bf0743ece18 1642 }
demayer 0:6bf0743ece18 1643
demayer 0:6bf0743ece18 1644 return res;
demayer 0:6bf0743ece18 1645 }
demayer 0:6bf0743ece18 1646 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 1647
demayer 0:6bf0743ece18 1648
demayer 0:6bf0743ece18 1649
demayer 0:6bf0743ece18 1650
demayer 0:6bf0743ece18 1651 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1652 /* Remove an object from the directory */
demayer 0:6bf0743ece18 1653 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1654 #if !_FS_READONLY && !_FS_MINIMIZE
demayer 0:6bf0743ece18 1655 static
demayer 0:6bf0743ece18 1656 FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
demayer 0:6bf0743ece18 1657 FATFS_DIR* dp /* Directory object pointing the entry to be removed */
demayer 0:6bf0743ece18 1658 )
demayer 0:6bf0743ece18 1659 {
demayer 0:6bf0743ece18 1660 FRESULT res;
demayer 0:6bf0743ece18 1661 #if _USE_LFN /* LFN configuration */
demayer 0:6bf0743ece18 1662 UINT i;
demayer 0:6bf0743ece18 1663
demayer 0:6bf0743ece18 1664 i = dp->index; /* SFN index */
demayer 0:6bf0743ece18 1665 res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx); /* Goto the SFN or top of the LFN entries */
demayer 0:6bf0743ece18 1666 if (res == FR_OK) {
demayer 0:6bf0743ece18 1667 do {
demayer 0:6bf0743ece18 1668 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1669 if (res != FR_OK) break;
demayer 0:6bf0743ece18 1670 mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
demayer 0:6bf0743ece18 1671 *dp->dir = DDEM;
demayer 0:6bf0743ece18 1672 dp->fs->wflag = 1;
demayer 0:6bf0743ece18 1673 if (dp->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
demayer 0:6bf0743ece18 1674 res = dir_next(dp, 0); /* Next entry */
demayer 0:6bf0743ece18 1675 } while (res == FR_OK);
demayer 0:6bf0743ece18 1676 if (res == FR_NO_FILE) res = FR_INT_ERR;
demayer 0:6bf0743ece18 1677 }
demayer 0:6bf0743ece18 1678
demayer 0:6bf0743ece18 1679 #else /* Non LFN configuration */
demayer 0:6bf0743ece18 1680 res = dir_sdi(dp, dp->index);
demayer 0:6bf0743ece18 1681 if (res == FR_OK) {
demayer 0:6bf0743ece18 1682 res = move_window(dp->fs, dp->sect);
demayer 0:6bf0743ece18 1683 if (res == FR_OK) {
demayer 0:6bf0743ece18 1684 mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
demayer 0:6bf0743ece18 1685 *dp->dir = DDEM;
demayer 0:6bf0743ece18 1686 dp->fs->wflag = 1;
demayer 0:6bf0743ece18 1687 }
demayer 0:6bf0743ece18 1688 }
demayer 0:6bf0743ece18 1689 #endif
demayer 0:6bf0743ece18 1690
demayer 0:6bf0743ece18 1691 return res;
demayer 0:6bf0743ece18 1692 }
demayer 0:6bf0743ece18 1693 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 1694
demayer 0:6bf0743ece18 1695
demayer 0:6bf0743ece18 1696
demayer 0:6bf0743ece18 1697
demayer 0:6bf0743ece18 1698 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1699 /* Get file information from directory entry */
demayer 0:6bf0743ece18 1700 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1701 #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
demayer 0:6bf0743ece18 1702 static
demayer 0:6bf0743ece18 1703 void get_fileinfo ( /* No return code */
demayer 0:6bf0743ece18 1704 FATFS_DIR* dp, /* Pointer to the directory object */
demayer 0:6bf0743ece18 1705 FILINFO* fno /* Pointer to the file information to be filled */
demayer 0:6bf0743ece18 1706 )
demayer 0:6bf0743ece18 1707 {
demayer 0:6bf0743ece18 1708 UINT i;
demayer 0:6bf0743ece18 1709 TCHAR *p, c;
demayer 0:6bf0743ece18 1710 BYTE *dir;
demayer 0:6bf0743ece18 1711 #if _USE_LFN
demayer 0:6bf0743ece18 1712 WCHAR w, *lfn;
demayer 0:6bf0743ece18 1713 #endif
demayer 0:6bf0743ece18 1714
demayer 0:6bf0743ece18 1715 p = fno->fname;
demayer 0:6bf0743ece18 1716 if (dp->sect) { /* Get SFN */
demayer 0:6bf0743ece18 1717 dir = dp->dir;
demayer 0:6bf0743ece18 1718 i = 0;
demayer 0:6bf0743ece18 1719 while (i < 11) { /* Copy name body and extension */
demayer 0:6bf0743ece18 1720 c = (TCHAR)dir[i++];
demayer 0:6bf0743ece18 1721 if (c == ' ') continue; /* Skip padding spaces */
demayer 0:6bf0743ece18 1722 if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
demayer 0:6bf0743ece18 1723 if (i == 9) *p++ = '.'; /* Insert a . if extension is exist */
demayer 0:6bf0743ece18 1724 #if _USE_LFN
demayer 0:6bf0743ece18 1725 if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
demayer 0:6bf0743ece18 1726 c += 0x20; /* To lower */
demayer 0:6bf0743ece18 1727 #if _LFN_UNICODE
demayer 0:6bf0743ece18 1728 if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))
demayer 0:6bf0743ece18 1729 c = c << 8 | dir[i++];
demayer 0:6bf0743ece18 1730 c = ff_convert(c, 1); /* OEM -> Unicode */
demayer 0:6bf0743ece18 1731 if (!c) c = '?';
demayer 0:6bf0743ece18 1732 #endif
demayer 0:6bf0743ece18 1733 #endif
demayer 0:6bf0743ece18 1734 *p++ = c;
demayer 0:6bf0743ece18 1735 }
demayer 0:6bf0743ece18 1736 fno->fattrib = dir[DIR_Attr]; /* Attribute */
demayer 0:6bf0743ece18 1737 fno->fsize = LD_DWORD(dir + DIR_FileSize); /* Size */
demayer 0:6bf0743ece18 1738 fno->fdate = LD_WORD(dir + DIR_WrtDate); /* Date */
demayer 0:6bf0743ece18 1739 fno->ftime = LD_WORD(dir + DIR_WrtTime); /* Time */
demayer 0:6bf0743ece18 1740 }
demayer 0:6bf0743ece18 1741 *p = 0; /* Terminate SFN string by a \0 */
demayer 0:6bf0743ece18 1742
demayer 0:6bf0743ece18 1743 #if _USE_LFN
demayer 0:6bf0743ece18 1744 if (fno->lfname) {
demayer 0:6bf0743ece18 1745 i = 0; p = fno->lfname;
demayer 0:6bf0743ece18 1746 if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) { /* Get LFN if available */
demayer 0:6bf0743ece18 1747 lfn = dp->lfn;
demayer 0:6bf0743ece18 1748 while ((w = *lfn++) != 0) { /* Get an LFN character */
demayer 0:6bf0743ece18 1749 #if !_LFN_UNICODE
demayer 0:6bf0743ece18 1750 w = ff_convert(w, 0); /* Unicode -> OEM */
demayer 0:6bf0743ece18 1751 if (!w) { i = 0; break; } /* No LFN if it could not be converted */
demayer 0:6bf0743ece18 1752 if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
demayer 0:6bf0743ece18 1753 p[i++] = (TCHAR)(w >> 8);
demayer 0:6bf0743ece18 1754 #endif
demayer 0:6bf0743ece18 1755 if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */
demayer 0:6bf0743ece18 1756 p[i++] = (TCHAR)w;
demayer 0:6bf0743ece18 1757 }
demayer 0:6bf0743ece18 1758 }
demayer 0:6bf0743ece18 1759 p[i] = 0; /* Terminate LFN string by a \0 */
demayer 0:6bf0743ece18 1760 }
demayer 0:6bf0743ece18 1761 #endif
demayer 0:6bf0743ece18 1762 }
demayer 0:6bf0743ece18 1763 #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
demayer 0:6bf0743ece18 1764
demayer 0:6bf0743ece18 1765
demayer 0:6bf0743ece18 1766
demayer 0:6bf0743ece18 1767
demayer 0:6bf0743ece18 1768 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1769 /* Pattern matching */
demayer 0:6bf0743ece18 1770 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1771 #if _USE_FIND && _FS_MINIMIZE <= 1
demayer 0:6bf0743ece18 1772 static
demayer 0:6bf0743ece18 1773 WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */
demayer 0:6bf0743ece18 1774 const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */
demayer 0:6bf0743ece18 1775 )
demayer 0:6bf0743ece18 1776 {
demayer 0:6bf0743ece18 1777 WCHAR chr;
demayer 0:6bf0743ece18 1778
demayer 0:6bf0743ece18 1779 #if !_LFN_UNICODE
demayer 0:6bf0743ece18 1780 chr = (BYTE)*(*ptr)++; /* Get a byte */
demayer 0:6bf0743ece18 1781 if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
demayer 0:6bf0743ece18 1782 if (IsDBCS1(chr) && IsDBCS2(**ptr)) /* Get DBC 2nd byte if needed */
demayer 0:6bf0743ece18 1783 chr = chr << 8 | (BYTE)*(*ptr)++;
demayer 0:6bf0743ece18 1784 #ifdef _EXCVT
demayer 0:6bf0743ece18 1785 if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
demayer 0:6bf0743ece18 1786 #endif
demayer 0:6bf0743ece18 1787 #else
demayer 0:6bf0743ece18 1788 chr = ff_wtoupper(*(*ptr)++); /* Get a word and to upper */
demayer 0:6bf0743ece18 1789 #endif
demayer 0:6bf0743ece18 1790 return chr;
demayer 0:6bf0743ece18 1791 }
demayer 0:6bf0743ece18 1792
demayer 0:6bf0743ece18 1793
demayer 0:6bf0743ece18 1794 static
demayer 0:6bf0743ece18 1795 int pattern_matching ( /* 0:mismatched, 1:matched */
demayer 0:6bf0743ece18 1796 const TCHAR* pat, /* Matching pattern */
demayer 0:6bf0743ece18 1797 const TCHAR* nam, /* String to be tested */
demayer 0:6bf0743ece18 1798 int skip, /* Number of pre-skip chars (number of ?s) */
demayer 0:6bf0743ece18 1799 int inf /* Infinite search (* specified) */
demayer 0:6bf0743ece18 1800 )
demayer 0:6bf0743ece18 1801 {
demayer 0:6bf0743ece18 1802 const TCHAR *pp, *np;
demayer 0:6bf0743ece18 1803 WCHAR pc, nc;
demayer 0:6bf0743ece18 1804 int nm, nx;
demayer 0:6bf0743ece18 1805
demayer 0:6bf0743ece18 1806
demayer 0:6bf0743ece18 1807 while (skip--) { /* Pre-skip name chars */
demayer 0:6bf0743ece18 1808 if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
demayer 0:6bf0743ece18 1809 }
demayer 0:6bf0743ece18 1810 if (!*pat && inf) return 1; /* (short circuit) */
demayer 0:6bf0743ece18 1811
demayer 0:6bf0743ece18 1812 do {
demayer 0:6bf0743ece18 1813 pp = pat; np = nam; /* Top of pattern and name to match */
demayer 0:6bf0743ece18 1814 for (;;) {
demayer 0:6bf0743ece18 1815 if (*pp == '?' || *pp == '*') { /* Wildcard? */
demayer 0:6bf0743ece18 1816 nm = nx = 0;
demayer 0:6bf0743ece18 1817 do { /* Analyze the wildcard chars */
demayer 0:6bf0743ece18 1818 if (*pp++ == '?') nm++; else nx = 1;
demayer 0:6bf0743ece18 1819 } while (*pp == '?' || *pp == '*');
demayer 0:6bf0743ece18 1820 if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
demayer 0:6bf0743ece18 1821 nc = *np; break; /* Branch mismatched */
demayer 0:6bf0743ece18 1822 }
demayer 0:6bf0743ece18 1823 pc = get_achar(&pp); /* Get a pattern char */
demayer 0:6bf0743ece18 1824 nc = get_achar(&np); /* Get a name char */
demayer 0:6bf0743ece18 1825 if (pc != nc) break; /* Branch mismatched? */
demayer 0:6bf0743ece18 1826 if (!pc) return 1; /* Branch matched? (matched at end of both strings) */
demayer 0:6bf0743ece18 1827 }
demayer 0:6bf0743ece18 1828 get_achar(&nam); /* nam++ */
demayer 0:6bf0743ece18 1829 } while (inf && nc); /* Retry until end of name if infinite search is specified */
demayer 0:6bf0743ece18 1830
demayer 0:6bf0743ece18 1831 return 0;
demayer 0:6bf0743ece18 1832 }
demayer 0:6bf0743ece18 1833 #endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
demayer 0:6bf0743ece18 1834
demayer 0:6bf0743ece18 1835
demayer 0:6bf0743ece18 1836
demayer 0:6bf0743ece18 1837
demayer 0:6bf0743ece18 1838 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1839 /* Pick a top segment and create the object name in directory form */
demayer 0:6bf0743ece18 1840 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 1841
demayer 0:6bf0743ece18 1842 static
demayer 0:6bf0743ece18 1843 FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
demayer 0:6bf0743ece18 1844 FATFS_DIR* dp, /* Pointer to the directory object */
demayer 0:6bf0743ece18 1845 const TCHAR** path /* Pointer to pointer to the segment in the path string */
demayer 0:6bf0743ece18 1846 )
demayer 0:6bf0743ece18 1847 {
demayer 0:6bf0743ece18 1848 #if _USE_LFN /* LFN configuration */
demayer 0:6bf0743ece18 1849 BYTE b, cf;
demayer 0:6bf0743ece18 1850 WCHAR w, *lfn;
demayer 0:6bf0743ece18 1851 UINT i, ni, si, di;
demayer 0:6bf0743ece18 1852 const TCHAR *p;
demayer 0:6bf0743ece18 1853
demayer 0:6bf0743ece18 1854 /* Create LFN in Unicode */
demayer 0:6bf0743ece18 1855 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
demayer 0:6bf0743ece18 1856 lfn = dp->lfn;
demayer 0:6bf0743ece18 1857 si = di = 0;
demayer 0:6bf0743ece18 1858 for (;;) {
demayer 0:6bf0743ece18 1859 w = p[si++]; /* Get a character */
demayer 0:6bf0743ece18 1860 if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
demayer 0:6bf0743ece18 1861 if (di >= _MAX_LFN) /* Reject too long name */
demayer 0:6bf0743ece18 1862 return FR_INVALID_NAME;
demayer 0:6bf0743ece18 1863 #if !_LFN_UNICODE
demayer 0:6bf0743ece18 1864 w &= 0xFF;
demayer 0:6bf0743ece18 1865 if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
demayer 0:6bf0743ece18 1866 b = (BYTE)p[si++]; /* Get 2nd byte */
demayer 0:6bf0743ece18 1867 w = (w << 8) + b; /* Create a DBC */
demayer 0:6bf0743ece18 1868 if (!IsDBCS2(b))
demayer 0:6bf0743ece18 1869 return FR_INVALID_NAME; /* Reject invalid sequence */
demayer 0:6bf0743ece18 1870 }
demayer 0:6bf0743ece18 1871 w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
demayer 0:6bf0743ece18 1872 if (!w) return FR_INVALID_NAME; /* Reject invalid code */
demayer 0:6bf0743ece18 1873 #endif
demayer 0:6bf0743ece18 1874 if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal characters for LFN */
demayer 0:6bf0743ece18 1875 return FR_INVALID_NAME;
demayer 0:6bf0743ece18 1876 lfn[di++] = w; /* Store the Unicode character */
demayer 0:6bf0743ece18 1877 }
demayer 0:6bf0743ece18 1878 *path = &p[si]; /* Return pointer to the next segment */
demayer 0:6bf0743ece18 1879 cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
demayer 0:6bf0743ece18 1880 #if _FS_RPATH
demayer 0:6bf0743ece18 1881 if ((di == 1 && lfn[di - 1] == '.') ||
demayer 0:6bf0743ece18 1882 (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot entry? */
demayer 0:6bf0743ece18 1883 lfn[di] = 0;
demayer 0:6bf0743ece18 1884 for (i = 0; i < 11; i++) /* Create dot name for SFN entry */
demayer 0:6bf0743ece18 1885 dp->fn[i] = (i < di) ? '.' : ' ';
demayer 0:6bf0743ece18 1886 dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
demayer 0:6bf0743ece18 1887 return FR_OK;
demayer 0:6bf0743ece18 1888 }
demayer 0:6bf0743ece18 1889 #endif
demayer 0:6bf0743ece18 1890 while (di) { /* Snip off trailing spaces and dots if exist */
demayer 0:6bf0743ece18 1891 w = lfn[di - 1];
demayer 0:6bf0743ece18 1892 if (w != ' ' && w != '.') break;
demayer 0:6bf0743ece18 1893 di--;
demayer 0:6bf0743ece18 1894 }
demayer 0:6bf0743ece18 1895 if (!di) return FR_INVALID_NAME; /* Reject nul string */
demayer 0:6bf0743ece18 1896 lfn[di] = 0; /* LFN is created */
demayer 0:6bf0743ece18 1897
demayer 0:6bf0743ece18 1898 /* Create SFN in directory form */
demayer 0:6bf0743ece18 1899 mem_set(dp->fn, ' ', 11);
demayer 0:6bf0743ece18 1900 for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
demayer 0:6bf0743ece18 1901 if (si) cf |= NS_LOSS | NS_LFN;
demayer 0:6bf0743ece18 1902 while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
demayer 0:6bf0743ece18 1903
demayer 0:6bf0743ece18 1904 b = i = 0; ni = 8;
demayer 0:6bf0743ece18 1905 for (;;) {
demayer 0:6bf0743ece18 1906 w = lfn[si++]; /* Get an LFN character */
demayer 0:6bf0743ece18 1907 if (!w) break; /* Break on end of the LFN */
demayer 0:6bf0743ece18 1908 if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
demayer 0:6bf0743ece18 1909 cf |= NS_LOSS | NS_LFN; continue;
demayer 0:6bf0743ece18 1910 }
demayer 0:6bf0743ece18 1911
demayer 0:6bf0743ece18 1912 if (i >= ni || si == di) { /* Extension or end of SFN */
demayer 0:6bf0743ece18 1913 if (ni == 11) { /* Long extension */
demayer 0:6bf0743ece18 1914 cf |= NS_LOSS | NS_LFN; break;
demayer 0:6bf0743ece18 1915 }
demayer 0:6bf0743ece18 1916 if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
demayer 0:6bf0743ece18 1917 if (si > di) break; /* No extension */
demayer 0:6bf0743ece18 1918 si = di; i = 8; ni = 11; /* Enter extension section */
demayer 0:6bf0743ece18 1919 b <<= 2; continue;
demayer 0:6bf0743ece18 1920 }
demayer 0:6bf0743ece18 1921
demayer 0:6bf0743ece18 1922 if (w >= 0x80) { /* Non ASCII character */
demayer 0:6bf0743ece18 1923 #ifdef _EXCVT
demayer 0:6bf0743ece18 1924 w = ff_convert(w, 0); /* Unicode -> OEM code */
demayer 0:6bf0743ece18 1925 if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
demayer 0:6bf0743ece18 1926 #else
demayer 0:6bf0743ece18 1927 w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
demayer 0:6bf0743ece18 1928 #endif
demayer 0:6bf0743ece18 1929 cf |= NS_LFN; /* Force create LFN entry */
demayer 0:6bf0743ece18 1930 }
demayer 0:6bf0743ece18 1931
demayer 0:6bf0743ece18 1932 if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */
demayer 0:6bf0743ece18 1933 if (i >= ni - 1) {
demayer 0:6bf0743ece18 1934 cf |= NS_LOSS | NS_LFN; i = ni; continue;
demayer 0:6bf0743ece18 1935 }
demayer 0:6bf0743ece18 1936 dp->fn[i++] = (BYTE)(w >> 8);
demayer 0:6bf0743ece18 1937 } else { /* SBC */
demayer 0:6bf0743ece18 1938 if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
demayer 0:6bf0743ece18 1939 w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
demayer 0:6bf0743ece18 1940 } else {
demayer 0:6bf0743ece18 1941 if (IsUpper(w)) { /* ASCII large capital */
demayer 0:6bf0743ece18 1942 b |= 2;
demayer 0:6bf0743ece18 1943 } else {
demayer 0:6bf0743ece18 1944 if (IsLower(w)) { /* ASCII small capital */
demayer 0:6bf0743ece18 1945 b |= 1; w -= 0x20;
demayer 0:6bf0743ece18 1946 }
demayer 0:6bf0743ece18 1947 }
demayer 0:6bf0743ece18 1948 }
demayer 0:6bf0743ece18 1949 }
demayer 0:6bf0743ece18 1950 dp->fn[i++] = (BYTE)w;
demayer 0:6bf0743ece18 1951 }
demayer 0:6bf0743ece18 1952
demayer 0:6bf0743ece18 1953 if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
demayer 0:6bf0743ece18 1954
demayer 0:6bf0743ece18 1955 if (ni == 8) b <<= 2;
demayer 0:6bf0743ece18 1956 if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
demayer 0:6bf0743ece18 1957 cf |= NS_LFN;
demayer 0:6bf0743ece18 1958 if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
demayer 0:6bf0743ece18 1959 if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
demayer 0:6bf0743ece18 1960 if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
demayer 0:6bf0743ece18 1961 }
demayer 0:6bf0743ece18 1962
demayer 0:6bf0743ece18 1963 dp->fn[NSFLAG] = cf; /* SFN is created */
demayer 0:6bf0743ece18 1964
demayer 0:6bf0743ece18 1965 return FR_OK;
demayer 0:6bf0743ece18 1966
demayer 0:6bf0743ece18 1967
demayer 0:6bf0743ece18 1968 #else /* Non-LFN configuration */
demayer 0:6bf0743ece18 1969 BYTE b, c, d, *sfn;
demayer 0:6bf0743ece18 1970 UINT ni, si, i;
demayer 0:6bf0743ece18 1971 const char *p;
demayer 0:6bf0743ece18 1972
demayer 0:6bf0743ece18 1973 /* Create file name in directory form */
demayer 0:6bf0743ece18 1974 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Skip duplicated separator */
demayer 0:6bf0743ece18 1975 sfn = dp->fn;
demayer 0:6bf0743ece18 1976 mem_set(sfn, ' ', 11);
demayer 0:6bf0743ece18 1977 si = i = b = 0; ni = 8;
demayer 0:6bf0743ece18 1978 #if _FS_RPATH
demayer 0:6bf0743ece18 1979 if (p[si] == '.') { /* Is this a dot entry? */
demayer 0:6bf0743ece18 1980 for (;;) {
demayer 0:6bf0743ece18 1981 c = (BYTE)p[si++];
demayer 0:6bf0743ece18 1982 if (c != '.' || si >= 3) break;
demayer 0:6bf0743ece18 1983 sfn[i++] = c;
demayer 0:6bf0743ece18 1984 }
demayer 0:6bf0743ece18 1985 if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
demayer 0:6bf0743ece18 1986 *path = &p[si]; /* Return pointer to the next segment */
demayer 0:6bf0743ece18 1987 sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
demayer 0:6bf0743ece18 1988 return FR_OK;
demayer 0:6bf0743ece18 1989 }
demayer 0:6bf0743ece18 1990 #endif
demayer 0:6bf0743ece18 1991 for (;;) {
demayer 0:6bf0743ece18 1992 c = (BYTE)p[si++];
demayer 0:6bf0743ece18 1993 if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
demayer 0:6bf0743ece18 1994 if (c == '.' || i >= ni) {
demayer 0:6bf0743ece18 1995 if (ni != 8 || c != '.') return FR_INVALID_NAME;
demayer 0:6bf0743ece18 1996 i = 8; ni = 11;
demayer 0:6bf0743ece18 1997 b <<= 2; continue;
demayer 0:6bf0743ece18 1998 }
demayer 0:6bf0743ece18 1999 if (c >= 0x80) { /* Extended character? */
demayer 0:6bf0743ece18 2000 b |= 3; /* Eliminate NT flag */
demayer 0:6bf0743ece18 2001 #ifdef _EXCVT
demayer 0:6bf0743ece18 2002 c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
demayer 0:6bf0743ece18 2003 #else
demayer 0:6bf0743ece18 2004 #if !_DF1S
demayer 0:6bf0743ece18 2005 return FR_INVALID_NAME; /* Reject extended characters (ASCII cfg) */
demayer 0:6bf0743ece18 2006 #endif
demayer 0:6bf0743ece18 2007 #endif
demayer 0:6bf0743ece18 2008 }
demayer 0:6bf0743ece18 2009 if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
demayer 0:6bf0743ece18 2010 d = (BYTE)p[si++]; /* Get 2nd byte */
demayer 0:6bf0743ece18 2011 if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
demayer 0:6bf0743ece18 2012 return FR_INVALID_NAME;
demayer 0:6bf0743ece18 2013 sfn[i++] = c;
demayer 0:6bf0743ece18 2014 sfn[i++] = d;
demayer 0:6bf0743ece18 2015 } else { /* SBC */
demayer 0:6bf0743ece18 2016 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
demayer 0:6bf0743ece18 2017 return FR_INVALID_NAME;
demayer 0:6bf0743ece18 2018 if (IsUpper(c)) { /* ASCII large capital? */
demayer 0:6bf0743ece18 2019 b |= 2;
demayer 0:6bf0743ece18 2020 } else {
demayer 0:6bf0743ece18 2021 if (IsLower(c)) { /* ASCII small capital? */
demayer 0:6bf0743ece18 2022 b |= 1; c -= 0x20;
demayer 0:6bf0743ece18 2023 }
demayer 0:6bf0743ece18 2024 }
demayer 0:6bf0743ece18 2025 sfn[i++] = c;
demayer 0:6bf0743ece18 2026 }
demayer 0:6bf0743ece18 2027 }
demayer 0:6bf0743ece18 2028 *path = &p[si]; /* Return pointer to the next segment */
demayer 0:6bf0743ece18 2029 c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
demayer 0:6bf0743ece18 2030
demayer 0:6bf0743ece18 2031 if (!i) return FR_INVALID_NAME; /* Reject nul string */
demayer 0:6bf0743ece18 2032 if (sfn[0] == DDEM) sfn[0] = RDDEM; /* When first character collides with DDEM, replace it with RDDEM */
demayer 0:6bf0743ece18 2033
demayer 0:6bf0743ece18 2034 if (ni == 8) b <<= 2;
demayer 0:6bf0743ece18 2035 if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
demayer 0:6bf0743ece18 2036 if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
demayer 0:6bf0743ece18 2037
demayer 0:6bf0743ece18 2038 sfn[NSFLAG] = c; /* Store NT flag, File name is created */
demayer 0:6bf0743ece18 2039
demayer 0:6bf0743ece18 2040 return FR_OK;
demayer 0:6bf0743ece18 2041 #endif
demayer 0:6bf0743ece18 2042 }
demayer 0:6bf0743ece18 2043
demayer 0:6bf0743ece18 2044
demayer 0:6bf0743ece18 2045
demayer 0:6bf0743ece18 2046
demayer 0:6bf0743ece18 2047 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2048 /* Follow a file path */
demayer 0:6bf0743ece18 2049 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2050
demayer 0:6bf0743ece18 2051 static
demayer 0:6bf0743ece18 2052 FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
demayer 0:6bf0743ece18 2053 FATFS_DIR* dp, /* Directory object to return last directory and found object */
demayer 0:6bf0743ece18 2054 const TCHAR* path /* Full-path string to find a file or directory */
demayer 0:6bf0743ece18 2055 )
demayer 0:6bf0743ece18 2056 {
demayer 0:6bf0743ece18 2057 FRESULT res;
demayer 0:6bf0743ece18 2058 BYTE *dir, ns;
demayer 0:6bf0743ece18 2059
demayer 0:6bf0743ece18 2060
demayer 0:6bf0743ece18 2061 #if _FS_RPATH
demayer 0:6bf0743ece18 2062 if (*path == '/' || *path == '\\') { /* There is a heading separator */
demayer 0:6bf0743ece18 2063 path++; dp->sclust = 0; /* Strip it and start from the root directory */
demayer 0:6bf0743ece18 2064 } else { /* No heading separator */
demayer 0:6bf0743ece18 2065 dp->sclust = dp->fs->cdir; /* Start from the current directory */
demayer 0:6bf0743ece18 2066 }
demayer 0:6bf0743ece18 2067 #else
demayer 0:6bf0743ece18 2068 if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
demayer 0:6bf0743ece18 2069 path++;
demayer 0:6bf0743ece18 2070 dp->sclust = 0; /* Always start from the root directory */
demayer 0:6bf0743ece18 2071 #endif
demayer 0:6bf0743ece18 2072
demayer 0:6bf0743ece18 2073 if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
demayer 0:6bf0743ece18 2074 res = dir_sdi(dp, 0);
demayer 0:6bf0743ece18 2075 dp->dir = 0;
demayer 0:6bf0743ece18 2076 } else { /* Follow path */
demayer 0:6bf0743ece18 2077 for (;;) {
demayer 0:6bf0743ece18 2078 res = create_name(dp, &path); /* Get a segment name of the path */
demayer 0:6bf0743ece18 2079 if (res != FR_OK) break;
demayer 0:6bf0743ece18 2080 res = dir_find(dp); /* Find an object with the sagment name */
demayer 0:6bf0743ece18 2081 ns = dp->fn[NSFLAG];
demayer 0:6bf0743ece18 2082 if (res != FR_OK) { /* Failed to find the object */
demayer 0:6bf0743ece18 2083 if (res == FR_NO_FILE) { /* Object is not found */
demayer 0:6bf0743ece18 2084 if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, */
demayer 0:6bf0743ece18 2085 dp->sclust = 0; dp->dir = 0; /* it is the root directory and stay there */
demayer 0:6bf0743ece18 2086 if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
demayer 0:6bf0743ece18 2087 res = FR_OK; /* Ended at the root directroy. Function completed. */
demayer 0:6bf0743ece18 2088 } else { /* Could not find the object */
demayer 0:6bf0743ece18 2089 if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
demayer 0:6bf0743ece18 2090 }
demayer 0:6bf0743ece18 2091 }
demayer 0:6bf0743ece18 2092 break;
demayer 0:6bf0743ece18 2093 }
demayer 0:6bf0743ece18 2094 if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
demayer 0:6bf0743ece18 2095 dir = dp->dir; /* Follow the sub-directory */
demayer 0:6bf0743ece18 2096 if (!(dir[DIR_Attr] & AM_DIR)) { /* It is not a sub-directory and cannot follow */
demayer 0:6bf0743ece18 2097 res = FR_NO_PATH; break;
demayer 0:6bf0743ece18 2098 }
demayer 0:6bf0743ece18 2099 dp->sclust = ld_clust(dp->fs, dir);
demayer 0:6bf0743ece18 2100 }
demayer 0:6bf0743ece18 2101 }
demayer 0:6bf0743ece18 2102
demayer 0:6bf0743ece18 2103 return res;
demayer 0:6bf0743ece18 2104 }
demayer 0:6bf0743ece18 2105
demayer 0:6bf0743ece18 2106
demayer 0:6bf0743ece18 2107
demayer 0:6bf0743ece18 2108
demayer 0:6bf0743ece18 2109 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2110 /* Get logical drive number from path name */
demayer 0:6bf0743ece18 2111 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2112
demayer 0:6bf0743ece18 2113 static
demayer 0:6bf0743ece18 2114 int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
demayer 0:6bf0743ece18 2115 const TCHAR** path /* Pointer to pointer to the path name */
demayer 0:6bf0743ece18 2116 )
demayer 0:6bf0743ece18 2117 {
demayer 0:6bf0743ece18 2118 const TCHAR *tp, *tt;
demayer 0:6bf0743ece18 2119 UINT i;
demayer 0:6bf0743ece18 2120 int vol = -1;
demayer 0:6bf0743ece18 2121 #if _STR_VOLUME_ID /* Find string drive id */
demayer 0:6bf0743ece18 2122 static const char* const str[] = {_VOLUME_STRS};
demayer 0:6bf0743ece18 2123 const char *sp;
demayer 0:6bf0743ece18 2124 char c;
demayer 0:6bf0743ece18 2125 TCHAR tc;
demayer 0:6bf0743ece18 2126 #endif
demayer 0:6bf0743ece18 2127
demayer 0:6bf0743ece18 2128
demayer 0:6bf0743ece18 2129 if (*path) { /* If the pointer is not a null */
demayer 0:6bf0743ece18 2130 for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */
demayer 0:6bf0743ece18 2131 if (*tt == ':') { /* If a ':' is exist in the path name */
demayer 0:6bf0743ece18 2132 tp = *path;
demayer 0:6bf0743ece18 2133 i = *tp++ - '0';
demayer 0:6bf0743ece18 2134 if (i < 10 && tp == tt) { /* Is there a numeric drive id? */
demayer 0:6bf0743ece18 2135 if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
demayer 0:6bf0743ece18 2136 vol = (int)i;
demayer 0:6bf0743ece18 2137 *path = ++tt;
demayer 0:6bf0743ece18 2138 }
demayer 0:6bf0743ece18 2139 }
demayer 0:6bf0743ece18 2140 #if _STR_VOLUME_ID
demayer 0:6bf0743ece18 2141 else { /* No numeric drive number, find string drive id */
demayer 0:6bf0743ece18 2142 i = 0; tt++;
demayer 0:6bf0743ece18 2143 do {
demayer 0:6bf0743ece18 2144 sp = str[i]; tp = *path;
demayer 0:6bf0743ece18 2145 do { /* Compare a string drive id with path name */
demayer 0:6bf0743ece18 2146 c = *sp++; tc = *tp++;
demayer 0:6bf0743ece18 2147 if (IsLower(tc)) tc -= 0x20;
demayer 0:6bf0743ece18 2148 } while (c && (TCHAR)c == tc);
demayer 0:6bf0743ece18 2149 } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */
demayer 0:6bf0743ece18 2150 if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
demayer 0:6bf0743ece18 2151 vol = (int)i;
demayer 0:6bf0743ece18 2152 *path = tt;
demayer 0:6bf0743ece18 2153 }
demayer 0:6bf0743ece18 2154 }
demayer 0:6bf0743ece18 2155 #endif
demayer 0:6bf0743ece18 2156 return vol;
demayer 0:6bf0743ece18 2157 }
demayer 0:6bf0743ece18 2158 #if _FS_RPATH && _VOLUMES >= 2
demayer 0:6bf0743ece18 2159 vol = CurrVol; /* Current drive */
demayer 0:6bf0743ece18 2160 #else
demayer 0:6bf0743ece18 2161 vol = 0; /* Drive 0 */
demayer 0:6bf0743ece18 2162 #endif
demayer 0:6bf0743ece18 2163 }
demayer 0:6bf0743ece18 2164 return vol;
demayer 0:6bf0743ece18 2165 }
demayer 0:6bf0743ece18 2166
demayer 0:6bf0743ece18 2167
demayer 0:6bf0743ece18 2168
demayer 0:6bf0743ece18 2169
demayer 0:6bf0743ece18 2170 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2171 /* Load a sector and check if it is an FAT boot sector */
demayer 0:6bf0743ece18 2172 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2173
demayer 0:6bf0743ece18 2174 static
demayer 0:6bf0743ece18 2175 BYTE check_fs ( /* 0:Valid FAT-BS, 1:Valid BS but not FAT, 2:Not a BS, 3:Disk error */
demayer 0:6bf0743ece18 2176 FATFS* fs, /* File system object */
demayer 0:6bf0743ece18 2177 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
demayer 0:6bf0743ece18 2178 )
demayer 0:6bf0743ece18 2179 {
demayer 0:6bf0743ece18 2180 fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
demayer 0:6bf0743ece18 2181 if (move_window(fs, sect) != FR_OK) /* Load boot record */
demayer 0:6bf0743ece18 2182 return 3;
demayer 0:6bf0743ece18 2183
demayer 0:6bf0743ece18 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) */
demayer 0:6bf0743ece18 2185 return 2;
demayer 0:6bf0743ece18 2186
demayer 0:6bf0743ece18 2187 if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
demayer 0:6bf0743ece18 2188 return 0;
demayer 0:6bf0743ece18 2189 if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
demayer 0:6bf0743ece18 2190 return 0;
demayer 0:6bf0743ece18 2191
demayer 0:6bf0743ece18 2192 return 1;
demayer 0:6bf0743ece18 2193 }
demayer 0:6bf0743ece18 2194
demayer 0:6bf0743ece18 2195
demayer 0:6bf0743ece18 2196
demayer 0:6bf0743ece18 2197
demayer 0:6bf0743ece18 2198 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2199 /* Find logical drive and check if the volume is mounted */
demayer 0:6bf0743ece18 2200 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2201
demayer 0:6bf0743ece18 2202 static
demayer 0:6bf0743ece18 2203 FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
demayer 0:6bf0743ece18 2204 FATFS** rfs, /* Pointer to pointer to the found file system object */
demayer 0:6bf0743ece18 2205 const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
demayer 0:6bf0743ece18 2206 BYTE wmode /* !=0: Check write protection for write access */
demayer 0:6bf0743ece18 2207 )
demayer 0:6bf0743ece18 2208 {
demayer 0:6bf0743ece18 2209 BYTE fmt, *pt;
demayer 0:6bf0743ece18 2210 int vol;
demayer 0:6bf0743ece18 2211 DSTATUS stat;
demayer 0:6bf0743ece18 2212 DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
demayer 0:6bf0743ece18 2213 WORD nrsv;
demayer 0:6bf0743ece18 2214 FATFS *fs;
demayer 0:6bf0743ece18 2215 UINT i;
demayer 0:6bf0743ece18 2216
demayer 0:6bf0743ece18 2217
demayer 0:6bf0743ece18 2218 /* Get logical drive number from the path name */
demayer 0:6bf0743ece18 2219 *rfs = 0;
demayer 0:6bf0743ece18 2220 vol = get_ldnumber(path);
demayer 0:6bf0743ece18 2221 if (vol < 0) return FR_INVALID_DRIVE;
demayer 0:6bf0743ece18 2222
demayer 0:6bf0743ece18 2223 /* Check if the file system object is valid or not */
demayer 0:6bf0743ece18 2224 fs = FatFs[vol]; /* Get pointer to the file system object */
demayer 0:6bf0743ece18 2225 if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
demayer 0:6bf0743ece18 2226
demayer 0:6bf0743ece18 2227 ENTER_FF(fs); /* Lock the volume */
demayer 0:6bf0743ece18 2228 *rfs = fs; /* Return pointer to the file system object */
demayer 0:6bf0743ece18 2229
demayer 0:6bf0743ece18 2230 if (fs->fs_type) { /* If the volume has been mounted */
demayer 0:6bf0743ece18 2231 stat = disk_status(fs->drv);
demayer 0:6bf0743ece18 2232 if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
demayer 0:6bf0743ece18 2233 if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
demayer 0:6bf0743ece18 2234 return FR_WRITE_PROTECTED;
demayer 0:6bf0743ece18 2235 return FR_OK; /* The file system object is valid */
demayer 0:6bf0743ece18 2236 }
demayer 0:6bf0743ece18 2237 }
demayer 0:6bf0743ece18 2238
demayer 0:6bf0743ece18 2239 /* The file system object is not valid. */
demayer 0:6bf0743ece18 2240 /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
demayer 0:6bf0743ece18 2241
demayer 0:6bf0743ece18 2242 fs->fs_type = 0; /* Clear the file system object */
demayer 0:6bf0743ece18 2243 fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
demayer 0:6bf0743ece18 2244 stat = disk_initialize(fs->drv); /* Initialize the physical drive */
demayer 0:6bf0743ece18 2245 if (stat & STA_NOINIT) /* Check if the initialization succeeded */
demayer 0:6bf0743ece18 2246 return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
demayer 0:6bf0743ece18 2247 if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
demayer 0:6bf0743ece18 2248 return FR_WRITE_PROTECTED;
demayer 0:6bf0743ece18 2249 #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
demayer 0:6bf0743ece18 2250 if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
demayer 0:6bf0743ece18 2251 || SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;
demayer 0:6bf0743ece18 2252 #endif
demayer 0:6bf0743ece18 2253 #if _FS_HEAPBUF
demayer 0:6bf0743ece18 2254 if (!fs->win) {
demayer 0:6bf0743ece18 2255 fs->win = (BYTE*)ff_memalloc(SS(fs)); /* Allocate buffer to back window if necessary */
demayer 0:6bf0743ece18 2256 if (!fs->win)
demayer 0:6bf0743ece18 2257 return FR_NOT_ENOUGH_CORE;
demayer 0:6bf0743ece18 2258 }
demayer 0:6bf0743ece18 2259 #endif
demayer 0:6bf0743ece18 2260 /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
demayer 0:6bf0743ece18 2261 bsect = 0;
demayer 0:6bf0743ece18 2262 fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */
demayer 0:6bf0743ece18 2263 if (fmt == 1 || (!fmt && (LD2PT(vol)))) { /* Not an FAT boot sector or forced partition number */
demayer 0:6bf0743ece18 2264 for (i = 0; i < 4; i++) { /* Get partition offset */
demayer 0:6bf0743ece18 2265 pt = fs->win + MBR_Table + i * SZ_PTE;
demayer 0:6bf0743ece18 2266 br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;
demayer 0:6bf0743ece18 2267 }
demayer 0:6bf0743ece18 2268 i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
demayer 0:6bf0743ece18 2269 if (i) i--;
demayer 0:6bf0743ece18 2270 do { /* Find an FAT volume */
demayer 0:6bf0743ece18 2271 bsect = br[i];
demayer 0:6bf0743ece18 2272 fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */
demayer 0:6bf0743ece18 2273 } while (!LD2PT(vol) && fmt && ++i < 4);
demayer 0:6bf0743ece18 2274 }
demayer 0:6bf0743ece18 2275 if (fmt == 3) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
demayer 0:6bf0743ece18 2276 if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
demayer 0:6bf0743ece18 2277
demayer 0:6bf0743ece18 2278 /* An FAT volume is found. Following code initializes the file system object */
demayer 0:6bf0743ece18 2279
demayer 0:6bf0743ece18 2280 if (LD_WORD(fs->win + BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
demayer 0:6bf0743ece18 2281 return FR_NO_FILESYSTEM;
demayer 0:6bf0743ece18 2282
demayer 0:6bf0743ece18 2283 fasize = LD_WORD(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
demayer 0:6bf0743ece18 2284 if (!fasize) fasize = LD_DWORD(fs->win + BPB_FATSz32);
demayer 0:6bf0743ece18 2285 fs->fsize = fasize;
demayer 0:6bf0743ece18 2286
demayer 0:6bf0743ece18 2287 fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
demayer 0:6bf0743ece18 2288 if (fs->n_fats != 1 && fs->n_fats != 2) /* (Must be 1 or 2) */
demayer 0:6bf0743ece18 2289 return FR_NO_FILESYSTEM;
demayer 0:6bf0743ece18 2290 fasize *= fs->n_fats; /* Number of sectors for FAT area */
demayer 0:6bf0743ece18 2291
demayer 0:6bf0743ece18 2292 fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
demayer 0:6bf0743ece18 2293 if (!fs->csize || (fs->csize & (fs->csize - 1))) /* (Must be power of 2) */
demayer 0:6bf0743ece18 2294 return FR_NO_FILESYSTEM;
demayer 0:6bf0743ece18 2295
demayer 0:6bf0743ece18 2296 fs->n_rootdir = LD_WORD(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
demayer 0:6bf0743ece18 2297 if (fs->n_rootdir % (SS(fs) / SZ_DIRE)) /* (Must be sector aligned) */
demayer 0:6bf0743ece18 2298 return FR_NO_FILESYSTEM;
demayer 0:6bf0743ece18 2299
demayer 0:6bf0743ece18 2300 tsect = LD_WORD(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
demayer 0:6bf0743ece18 2301 if (!tsect) tsect = LD_DWORD(fs->win + BPB_TotSec32);
demayer 0:6bf0743ece18 2302
demayer 0:6bf0743ece18 2303 nrsv = LD_WORD(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
demayer 0:6bf0743ece18 2304 if (!nrsv) return FR_NO_FILESYSTEM; /* (Must not be 0) */
demayer 0:6bf0743ece18 2305
demayer 0:6bf0743ece18 2306 /* Determine the FAT sub type */
demayer 0:6bf0743ece18 2307 sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIRE); /* RSV + FAT + FATFS_DIR */
demayer 0:6bf0743ece18 2308 if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
demayer 0:6bf0743ece18 2309 nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
demayer 0:6bf0743ece18 2310 if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
demayer 0:6bf0743ece18 2311 fmt = FS_FAT12;
demayer 0:6bf0743ece18 2312 if (nclst >= MIN_FAT16) fmt = FS_FAT16;
demayer 0:6bf0743ece18 2313 if (nclst >= MIN_FAT32) fmt = FS_FAT32;
demayer 0:6bf0743ece18 2314
demayer 0:6bf0743ece18 2315 /* Boundaries and Limits */
demayer 0:6bf0743ece18 2316 fs->n_fatent = nclst + 2; /* Number of FAT entries */
demayer 0:6bf0743ece18 2317 fs->volbase = bsect; /* Volume start sector */
demayer 0:6bf0743ece18 2318 fs->fatbase = bsect + nrsv; /* FAT start sector */
demayer 0:6bf0743ece18 2319 fs->database = bsect + sysect; /* Data start sector */
demayer 0:6bf0743ece18 2320 if (fmt == FS_FAT32) {
demayer 0:6bf0743ece18 2321 if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
demayer 0:6bf0743ece18 2322 fs->dirbase = LD_DWORD(fs->win + BPB_RootClus); /* Root directory start cluster */
demayer 0:6bf0743ece18 2323 szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
demayer 0:6bf0743ece18 2324 } else {
demayer 0:6bf0743ece18 2325 if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
demayer 0:6bf0743ece18 2326 fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
demayer 0:6bf0743ece18 2327 szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
demayer 0:6bf0743ece18 2328 fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
demayer 0:6bf0743ece18 2329 }
demayer 0:6bf0743ece18 2330 if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than the size needed) */
demayer 0:6bf0743ece18 2331 return FR_NO_FILESYSTEM;
demayer 0:6bf0743ece18 2332
demayer 0:6bf0743ece18 2333 #if !_FS_READONLY
demayer 0:6bf0743ece18 2334 /* Initialize cluster allocation information */
demayer 0:6bf0743ece18 2335 fs->last_clust = fs->free_clust = 0xFFFFFFFF;
demayer 0:6bf0743ece18 2336
demayer 0:6bf0743ece18 2337 /* Get fsinfo if available */
demayer 0:6bf0743ece18 2338 fs->fsi_flag = 0x80;
demayer 0:6bf0743ece18 2339 #if (_FS_NOFSINFO & 3) != 3
demayer 0:6bf0743ece18 2340 if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo == 1 */
demayer 0:6bf0743ece18 2341 && LD_WORD(fs->win + BPB_FSInfo) == 1
demayer 0:6bf0743ece18 2342 && move_window(fs, bsect + 1) == FR_OK)
demayer 0:6bf0743ece18 2343 {
demayer 0:6bf0743ece18 2344 fs->fsi_flag = 0;
demayer 0:6bf0743ece18 2345 if (LD_WORD(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */
demayer 0:6bf0743ece18 2346 && LD_DWORD(fs->win + FSI_LeadSig) == 0x41615252
demayer 0:6bf0743ece18 2347 && LD_DWORD(fs->win + FSI_StrucSig) == 0x61417272)
demayer 0:6bf0743ece18 2348 {
demayer 0:6bf0743ece18 2349 #if (_FS_NOFSINFO & 1) == 0
demayer 0:6bf0743ece18 2350 fs->free_clust = LD_DWORD(fs->win + FSI_Free_Count);
demayer 0:6bf0743ece18 2351 #endif
demayer 0:6bf0743ece18 2352 #if (_FS_NOFSINFO & 2) == 0
demayer 0:6bf0743ece18 2353 fs->last_clust = LD_DWORD(fs->win + FSI_Nxt_Free);
demayer 0:6bf0743ece18 2354 #endif
demayer 0:6bf0743ece18 2355 }
demayer 0:6bf0743ece18 2356 }
demayer 0:6bf0743ece18 2357 #endif
demayer 0:6bf0743ece18 2358 #endif
demayer 0:6bf0743ece18 2359 fs->fs_type = fmt; /* FAT sub-type */
demayer 0:6bf0743ece18 2360 fs->id = ++Fsid; /* File system mount ID */
demayer 0:6bf0743ece18 2361 #if _FS_RPATH
demayer 0:6bf0743ece18 2362 fs->cdir = 0; /* Set current directory to root */
demayer 0:6bf0743ece18 2363 #endif
demayer 0:6bf0743ece18 2364 #if _FS_LOCK /* Clear file lock semaphores */
demayer 0:6bf0743ece18 2365 clear_lock(fs);
demayer 0:6bf0743ece18 2366 #endif
demayer 0:6bf0743ece18 2367
demayer 0:6bf0743ece18 2368 return FR_OK;
demayer 0:6bf0743ece18 2369 }
demayer 0:6bf0743ece18 2370
demayer 0:6bf0743ece18 2371
demayer 0:6bf0743ece18 2372
demayer 0:6bf0743ece18 2373
demayer 0:6bf0743ece18 2374 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2375 /* Check if the file/directory object is valid or not */
demayer 0:6bf0743ece18 2376 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2377
demayer 0:6bf0743ece18 2378 static
demayer 0:6bf0743ece18 2379 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
demayer 0:6bf0743ece18 2380 void* obj /* Pointer to the object FIL/FATFS_DIR to check validity */
demayer 0:6bf0743ece18 2381 )
demayer 0:6bf0743ece18 2382 {
demayer 0:6bf0743ece18 2383 FIL *fil = (FIL*)obj; /* Assuming offset of .fs and .id in the FIL/FATFS_DIR structure is identical */
demayer 0:6bf0743ece18 2384
demayer 0:6bf0743ece18 2385
demayer 0:6bf0743ece18 2386 if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id || (disk_status(fil->fs->drv) & STA_NOINIT))
demayer 0:6bf0743ece18 2387 return FR_INVALID_OBJECT;
demayer 0:6bf0743ece18 2388
demayer 0:6bf0743ece18 2389 ENTER_FF(fil->fs); /* Lock file system */
demayer 0:6bf0743ece18 2390
demayer 0:6bf0743ece18 2391 return FR_OK;
demayer 0:6bf0743ece18 2392 }
demayer 0:6bf0743ece18 2393
demayer 0:6bf0743ece18 2394
demayer 0:6bf0743ece18 2395
demayer 0:6bf0743ece18 2396
demayer 0:6bf0743ece18 2397 /*--------------------------------------------------------------------------
demayer 0:6bf0743ece18 2398
demayer 0:6bf0743ece18 2399 Public Functions
demayer 0:6bf0743ece18 2400
demayer 0:6bf0743ece18 2401 ---------------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2402
demayer 0:6bf0743ece18 2403
demayer 0:6bf0743ece18 2404
demayer 0:6bf0743ece18 2405 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2406 /* Mount/Unmount a Logical Drive */
demayer 0:6bf0743ece18 2407 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2408
demayer 0:6bf0743ece18 2409 FRESULT f_mount (
demayer 0:6bf0743ece18 2410 FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/
demayer 0:6bf0743ece18 2411 const TCHAR* path, /* Logical drive number to be mounted/unmounted */
demayer 0:6bf0743ece18 2412 BYTE opt /* 0:Do not mount (delayed mount), 1:Mount immediately */
demayer 0:6bf0743ece18 2413 )
demayer 0:6bf0743ece18 2414 {
demayer 0:6bf0743ece18 2415 FATFS *cfs;
demayer 0:6bf0743ece18 2416 int vol;
demayer 0:6bf0743ece18 2417 FRESULT res;
demayer 0:6bf0743ece18 2418 const TCHAR *rp = path;
demayer 0:6bf0743ece18 2419
demayer 0:6bf0743ece18 2420
demayer 0:6bf0743ece18 2421 vol = get_ldnumber(&rp);
demayer 0:6bf0743ece18 2422 if (vol < 0) return FR_INVALID_DRIVE;
demayer 0:6bf0743ece18 2423 cfs = FatFs[vol]; /* Pointer to fs object */
demayer 0:6bf0743ece18 2424
demayer 0:6bf0743ece18 2425 if (cfs) {
demayer 0:6bf0743ece18 2426 #if _FS_LOCK
demayer 0:6bf0743ece18 2427 clear_lock(cfs);
demayer 0:6bf0743ece18 2428 #endif
demayer 0:6bf0743ece18 2429 #if _FS_REENTRANT /* Discard sync object of the current volume */
demayer 0:6bf0743ece18 2430 if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
demayer 0:6bf0743ece18 2431 #endif
demayer 0:6bf0743ece18 2432 cfs->fs_type = 0; /* Clear old fs object */
demayer 0:6bf0743ece18 2433 #if _FS_HEAPBUF
demayer 0:6bf0743ece18 2434 ff_memfree(cfs->win); /* Clean up window buffer */
demayer 0:6bf0743ece18 2435 #endif
demayer 0:6bf0743ece18 2436 }
demayer 0:6bf0743ece18 2437
demayer 0:6bf0743ece18 2438 if (fs) {
demayer 0:6bf0743ece18 2439 fs->fs_type = 0; /* Clear new fs object */
demayer 0:6bf0743ece18 2440 #if _FS_REENTRANT /* Create sync object for the new volume */
demayer 0:6bf0743ece18 2441 if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
demayer 0:6bf0743ece18 2442 #endif
demayer 0:6bf0743ece18 2443 #if _FS_HEAPBUF
demayer 0:6bf0743ece18 2444 fs->win = 0; /* NULL buffer to prevent use of uninitialized buffer */
demayer 0:6bf0743ece18 2445 #endif
demayer 0:6bf0743ece18 2446 }
demayer 0:6bf0743ece18 2447 FatFs[vol] = fs; /* Register new fs object */
demayer 0:6bf0743ece18 2448
demayer 0:6bf0743ece18 2449 if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */
demayer 0:6bf0743ece18 2450
demayer 0:6bf0743ece18 2451 res = find_volume(&fs, &path, 0); /* Force mounted the volume */
demayer 0:6bf0743ece18 2452 LEAVE_FF(fs, res);
demayer 0:6bf0743ece18 2453 }
demayer 0:6bf0743ece18 2454
demayer 0:6bf0743ece18 2455
demayer 0:6bf0743ece18 2456
demayer 0:6bf0743ece18 2457
demayer 0:6bf0743ece18 2458 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2459 /* Open or Create a File */
demayer 0:6bf0743ece18 2460 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2461
demayer 0:6bf0743ece18 2462 FRESULT f_open (
demayer 0:6bf0743ece18 2463 FIL* fp, /* Pointer to the blank file object */
demayer 0:6bf0743ece18 2464 const TCHAR* path, /* Pointer to the file name */
demayer 0:6bf0743ece18 2465 BYTE mode /* Access mode and file open mode flags */
demayer 0:6bf0743ece18 2466 )
demayer 0:6bf0743ece18 2467 {
demayer 0:6bf0743ece18 2468 FRESULT res;
demayer 0:6bf0743ece18 2469 FATFS_DIR dj;
demayer 0:6bf0743ece18 2470 BYTE *dir;
demayer 0:6bf0743ece18 2471 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 2472 #if !_FS_READONLY
demayer 0:6bf0743ece18 2473 DWORD dw, cl;
demayer 0:6bf0743ece18 2474 #endif
demayer 0:6bf0743ece18 2475
demayer 0:6bf0743ece18 2476
demayer 0:6bf0743ece18 2477 if (!fp) return FR_INVALID_OBJECT;
demayer 0:6bf0743ece18 2478 fp->fs = 0; /* Clear file object */
demayer 0:6bf0743ece18 2479
demayer 0:6bf0743ece18 2480 /* Get logical drive number */
demayer 0:6bf0743ece18 2481 #if !_FS_READONLY
demayer 0:6bf0743ece18 2482 mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
demayer 0:6bf0743ece18 2483 res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));
demayer 0:6bf0743ece18 2484 #else
demayer 0:6bf0743ece18 2485 mode &= FA_READ;
demayer 0:6bf0743ece18 2486 res = find_volume(&dj.fs, &path, 0);
demayer 0:6bf0743ece18 2487 #endif
demayer 0:6bf0743ece18 2488 if (res == FR_OK) {
demayer 0:6bf0743ece18 2489 INIT_BUF(dj);
demayer 0:6bf0743ece18 2490 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 2491 dir = dj.dir;
demayer 0:6bf0743ece18 2492 #if !_FS_READONLY /* R/W configuration */
demayer 0:6bf0743ece18 2493 if (res == FR_OK) {
demayer 0:6bf0743ece18 2494 if (!dir) /* Default directory itself */
demayer 0:6bf0743ece18 2495 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 2496 #if _FS_LOCK
demayer 0:6bf0743ece18 2497 else
demayer 0:6bf0743ece18 2498 res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
demayer 0:6bf0743ece18 2499 #endif
demayer 0:6bf0743ece18 2500 }
demayer 0:6bf0743ece18 2501 /* Create or Open a file */
demayer 0:6bf0743ece18 2502 if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
demayer 0:6bf0743ece18 2503 if (res != FR_OK) { /* No file, create new */
demayer 0:6bf0743ece18 2504 if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
demayer 0:6bf0743ece18 2505 #if _FS_LOCK
demayer 0:6bf0743ece18 2506 res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
demayer 0:6bf0743ece18 2507 #else
demayer 0:6bf0743ece18 2508 res = dir_register(&dj);
demayer 0:6bf0743ece18 2509 #endif
demayer 0:6bf0743ece18 2510 mode |= FA_CREATE_ALWAYS; /* File is created */
demayer 0:6bf0743ece18 2511 dir = dj.dir; /* New entry */
demayer 0:6bf0743ece18 2512 }
demayer 0:6bf0743ece18 2513 else { /* Any object is already existing */
demayer 0:6bf0743ece18 2514 if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or FATFS_DIR) */
demayer 0:6bf0743ece18 2515 res = FR_DENIED;
demayer 0:6bf0743ece18 2516 } else {
demayer 0:6bf0743ece18 2517 if (mode & FA_CREATE_NEW) /* Cannot create as new file */
demayer 0:6bf0743ece18 2518 res = FR_EXIST;
demayer 0:6bf0743ece18 2519 }
demayer 0:6bf0743ece18 2520 }
demayer 0:6bf0743ece18 2521 if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
demayer 0:6bf0743ece18 2522 dw = GET_FATTIME();
demayer 0:6bf0743ece18 2523 ST_DWORD(dir + DIR_CrtTime, dw);/* Set created time */
demayer 0:6bf0743ece18 2524 ST_DWORD(dir + DIR_WrtTime, dw);/* Set modified time */
demayer 0:6bf0743ece18 2525 dir[DIR_Attr] = 0; /* Reset attribute */
demayer 0:6bf0743ece18 2526 ST_DWORD(dir + DIR_FileSize, 0);/* Reset file size */
demayer 0:6bf0743ece18 2527 cl = ld_clust(dj.fs, dir); /* Get cluster chain */
demayer 0:6bf0743ece18 2528 st_clust(dir, 0); /* Reset cluster */
demayer 0:6bf0743ece18 2529 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 2530 if (cl) { /* Remove the cluster chain if exist */
demayer 0:6bf0743ece18 2531 dw = dj.fs->winsect;
demayer 0:6bf0743ece18 2532 res = remove_chain(dj.fs, cl);
demayer 0:6bf0743ece18 2533 if (res == FR_OK) {
demayer 0:6bf0743ece18 2534 dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
demayer 0:6bf0743ece18 2535 res = move_window(dj.fs, dw);
demayer 0:6bf0743ece18 2536 }
demayer 0:6bf0743ece18 2537 }
demayer 0:6bf0743ece18 2538 }
demayer 0:6bf0743ece18 2539 }
demayer 0:6bf0743ece18 2540 else { /* Open an existing file */
demayer 0:6bf0743ece18 2541 if (res == FR_OK) { /* Following succeeded */
demayer 0:6bf0743ece18 2542 if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
demayer 0:6bf0743ece18 2543 res = FR_NO_FILE;
demayer 0:6bf0743ece18 2544 } else {
demayer 0:6bf0743ece18 2545 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
demayer 0:6bf0743ece18 2546 res = FR_DENIED;
demayer 0:6bf0743ece18 2547 }
demayer 0:6bf0743ece18 2548 }
demayer 0:6bf0743ece18 2549 }
demayer 0:6bf0743ece18 2550 if (res == FR_OK) {
demayer 0:6bf0743ece18 2551 if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
demayer 0:6bf0743ece18 2552 mode |= FA__WRITTEN;
demayer 0:6bf0743ece18 2553 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
demayer 0:6bf0743ece18 2554 fp->dir_ptr = dir;
demayer 0:6bf0743ece18 2555 #if _FS_LOCK
demayer 0:6bf0743ece18 2556 fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
demayer 0:6bf0743ece18 2557 if (!fp->lockid) res = FR_INT_ERR;
demayer 0:6bf0743ece18 2558 #endif
demayer 0:6bf0743ece18 2559 }
demayer 0:6bf0743ece18 2560
demayer 0:6bf0743ece18 2561 #else /* R/O configuration */
demayer 0:6bf0743ece18 2562 if (res == FR_OK) { /* Follow succeeded */
demayer 0:6bf0743ece18 2563 dir = dj.dir;
demayer 0:6bf0743ece18 2564 if (!dir) { /* Current directory itself */
demayer 0:6bf0743ece18 2565 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 2566 } else {
demayer 0:6bf0743ece18 2567 if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
demayer 0:6bf0743ece18 2568 res = FR_NO_FILE;
demayer 0:6bf0743ece18 2569 }
demayer 0:6bf0743ece18 2570 }
demayer 0:6bf0743ece18 2571 #endif
demayer 0:6bf0743ece18 2572 FREE_BUF();
demayer 0:6bf0743ece18 2573
demayer 0:6bf0743ece18 2574 if (res == FR_OK) {
demayer 0:6bf0743ece18 2575 fp->flag = mode; /* File access mode */
demayer 0:6bf0743ece18 2576 fp->err = 0; /* Clear error flag */
demayer 0:6bf0743ece18 2577 fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
demayer 0:6bf0743ece18 2578 fp->fsize = LD_DWORD(dir + DIR_FileSize); /* File size */
demayer 0:6bf0743ece18 2579 fp->fptr = 0; /* File pointer */
demayer 0:6bf0743ece18 2580 fp->dsect = 0;
demayer 0:6bf0743ece18 2581 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 2582 fp->cltbl = 0; /* Normal seek mode */
demayer 0:6bf0743ece18 2583 #endif
demayer 0:6bf0743ece18 2584 fp->fs = dj.fs; /* Validate file object */
demayer 0:6bf0743ece18 2585 fp->id = fp->fs->id;
demayer 0:6bf0743ece18 2586 #if !_FS_TINY && _FS_HEAPBUF
demayer 0:6bf0743ece18 2587 fp->buf = (BYTE*)ff_memalloc(SS(dj.fs)); /* Allocate buffer if necessary */
demayer 0:6bf0743ece18 2588 if (!fp->buf)
demayer 0:6bf0743ece18 2589 return FR_NOT_ENOUGH_CORE;
demayer 0:6bf0743ece18 2590 #endif
demayer 0:6bf0743ece18 2591 }
demayer 0:6bf0743ece18 2592 }
demayer 0:6bf0743ece18 2593
demayer 0:6bf0743ece18 2594 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 2595 }
demayer 0:6bf0743ece18 2596
demayer 0:6bf0743ece18 2597
demayer 0:6bf0743ece18 2598
demayer 0:6bf0743ece18 2599
demayer 0:6bf0743ece18 2600 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2601 /* Read File */
demayer 0:6bf0743ece18 2602 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2603
demayer 0:6bf0743ece18 2604 FRESULT f_read (
demayer 0:6bf0743ece18 2605 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 2606 void* buff, /* Pointer to data buffer */
demayer 0:6bf0743ece18 2607 UINT btr, /* Number of bytes to read */
demayer 0:6bf0743ece18 2608 UINT* br /* Pointer to number of bytes read */
demayer 0:6bf0743ece18 2609 )
demayer 0:6bf0743ece18 2610 {
demayer 0:6bf0743ece18 2611 FRESULT res;
demayer 0:6bf0743ece18 2612 DWORD clst, sect, remain;
demayer 0:6bf0743ece18 2613 UINT rcnt, cc;
demayer 0:6bf0743ece18 2614 BYTE csect, *rbuff = (BYTE*)buff;
demayer 0:6bf0743ece18 2615
demayer 0:6bf0743ece18 2616
demayer 0:6bf0743ece18 2617 *br = 0; /* Clear read byte counter */
demayer 0:6bf0743ece18 2618
demayer 0:6bf0743ece18 2619 res = validate(fp); /* Check validity */
demayer 0:6bf0743ece18 2620 if (res != FR_OK) LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 2621 if (fp->err) /* Check error */
demayer 0:6bf0743ece18 2622 LEAVE_FF(fp->fs, (FRESULT)fp->err);
demayer 0:6bf0743ece18 2623 if (!(fp->flag & FA_READ)) /* Check access mode */
demayer 0:6bf0743ece18 2624 LEAVE_FF(fp->fs, FR_DENIED);
demayer 0:6bf0743ece18 2625 remain = fp->fsize - fp->fptr;
demayer 0:6bf0743ece18 2626 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
demayer 0:6bf0743ece18 2627
demayer 0:6bf0743ece18 2628 for ( ; btr; /* Repeat until all data read */
demayer 0:6bf0743ece18 2629 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
demayer 0:6bf0743ece18 2630 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
demayer 0:6bf0743ece18 2631 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
demayer 0:6bf0743ece18 2632 if (!csect) { /* On the cluster boundary? */
demayer 0:6bf0743ece18 2633 if (fp->fptr == 0) { /* On the top of the file? */
demayer 0:6bf0743ece18 2634 clst = fp->sclust; /* Follow from the origin */
demayer 0:6bf0743ece18 2635 } else { /* Middle or end of the file */
demayer 0:6bf0743ece18 2636 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 2637 if (fp->cltbl)
demayer 0:6bf0743ece18 2638 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
demayer 0:6bf0743ece18 2639 else
demayer 0:6bf0743ece18 2640 #endif
demayer 0:6bf0743ece18 2641 clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
demayer 0:6bf0743ece18 2642 }
demayer 0:6bf0743ece18 2643 if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 2644 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2645 fp->clust = clst; /* Update current cluster */
demayer 0:6bf0743ece18 2646 }
demayer 0:6bf0743ece18 2647 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
demayer 0:6bf0743ece18 2648 if (!sect) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 2649 sect += csect;
demayer 0:6bf0743ece18 2650 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
demayer 0:6bf0743ece18 2651 if (cc) { /* Read maximum contiguous sectors directly */
demayer 0:6bf0743ece18 2652 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
demayer 0:6bf0743ece18 2653 cc = fp->fs->csize - csect;
demayer 0:6bf0743ece18 2654 if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)
demayer 0:6bf0743ece18 2655 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2656 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
demayer 0:6bf0743ece18 2657 #if _FS_TINY
demayer 0:6bf0743ece18 2658 if (fp->fs->wflag && fp->fs->winsect - sect < cc)
demayer 0:6bf0743ece18 2659 mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
demayer 0:6bf0743ece18 2660 #else
demayer 0:6bf0743ece18 2661 if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
demayer 0:6bf0743ece18 2662 mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
demayer 0:6bf0743ece18 2663 #endif
demayer 0:6bf0743ece18 2664 #endif
demayer 0:6bf0743ece18 2665 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
demayer 0:6bf0743ece18 2666 continue;
demayer 0:6bf0743ece18 2667 }
demayer 0:6bf0743ece18 2668 #if !_FS_TINY
demayer 0:6bf0743ece18 2669 if (fp->dsect != sect) { /* Load data sector if not in cache */
demayer 0:6bf0743ece18 2670 #if !_FS_READONLY
demayer 0:6bf0743ece18 2671 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
demayer 0:6bf0743ece18 2672 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 2673 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2674 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 2675 }
demayer 0:6bf0743ece18 2676 #endif
demayer 0:6bf0743ece18 2677 if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
demayer 0:6bf0743ece18 2678 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2679 }
demayer 0:6bf0743ece18 2680 #endif
demayer 0:6bf0743ece18 2681 fp->dsect = sect;
demayer 0:6bf0743ece18 2682 }
demayer 0:6bf0743ece18 2683 rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
demayer 0:6bf0743ece18 2684 if (rcnt > btr) rcnt = btr;
demayer 0:6bf0743ece18 2685 #if _FS_TINY
demayer 0:6bf0743ece18 2686 if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
demayer 0:6bf0743ece18 2687 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2688 mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
demayer 0:6bf0743ece18 2689 #else
demayer 0:6bf0743ece18 2690 mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
demayer 0:6bf0743ece18 2691 #endif
demayer 0:6bf0743ece18 2692 }
demayer 0:6bf0743ece18 2693
demayer 0:6bf0743ece18 2694 LEAVE_FF(fp->fs, FR_OK);
demayer 0:6bf0743ece18 2695 }
demayer 0:6bf0743ece18 2696
demayer 0:6bf0743ece18 2697
demayer 0:6bf0743ece18 2698
demayer 0:6bf0743ece18 2699
demayer 0:6bf0743ece18 2700 #if !_FS_READONLY
demayer 0:6bf0743ece18 2701 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2702 /* Write File */
demayer 0:6bf0743ece18 2703 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2704
demayer 0:6bf0743ece18 2705 FRESULT f_write (
demayer 0:6bf0743ece18 2706 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 2707 const void *buff, /* Pointer to the data to be written */
demayer 0:6bf0743ece18 2708 UINT btw, /* Number of bytes to write */
demayer 0:6bf0743ece18 2709 UINT* bw /* Pointer to number of bytes written */
demayer 0:6bf0743ece18 2710 )
demayer 0:6bf0743ece18 2711 {
demayer 0:6bf0743ece18 2712 FRESULT res;
demayer 0:6bf0743ece18 2713 DWORD clst, sect;
demayer 0:6bf0743ece18 2714 UINT wcnt, cc;
demayer 0:6bf0743ece18 2715 const BYTE *wbuff = (const BYTE*)buff;
demayer 0:6bf0743ece18 2716 BYTE csect;
demayer 0:6bf0743ece18 2717 bool need_sync = false;
demayer 0:6bf0743ece18 2718
demayer 0:6bf0743ece18 2719 *bw = 0; /* Clear write byte counter */
demayer 0:6bf0743ece18 2720
demayer 0:6bf0743ece18 2721 res = validate(fp); /* Check validity */
demayer 0:6bf0743ece18 2722 if (res != FR_OK) LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 2723 if (fp->err) /* Check error */
demayer 0:6bf0743ece18 2724 LEAVE_FF(fp->fs, (FRESULT)fp->err);
demayer 0:6bf0743ece18 2725 if (!(fp->flag & FA_WRITE)) /* Check access mode */
demayer 0:6bf0743ece18 2726 LEAVE_FF(fp->fs, FR_DENIED);
demayer 0:6bf0743ece18 2727 if (fp->fptr + btw < fp->fptr) btw = 0; /* File size cannot reach 4GB */
demayer 0:6bf0743ece18 2728
demayer 0:6bf0743ece18 2729 for ( ; btw; /* Repeat until all data written */
demayer 0:6bf0743ece18 2730 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
demayer 0:6bf0743ece18 2731 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
demayer 0:6bf0743ece18 2732 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
demayer 0:6bf0743ece18 2733 if (!csect) { /* On the cluster boundary? */
demayer 0:6bf0743ece18 2734 if (fp->fptr == 0) { /* On the top of the file? */
demayer 0:6bf0743ece18 2735 clst = fp->sclust; /* Follow from the origin */
demayer 0:6bf0743ece18 2736 if (clst == 0) /* When no cluster is allocated, */
demayer 0:6bf0743ece18 2737 clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
demayer 0:6bf0743ece18 2738 } else { /* Middle or end of the file */
demayer 0:6bf0743ece18 2739 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 2740 if (fp->cltbl)
demayer 0:6bf0743ece18 2741 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
demayer 0:6bf0743ece18 2742 else
demayer 0:6bf0743ece18 2743 #endif
demayer 0:6bf0743ece18 2744 clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
demayer 0:6bf0743ece18 2745 }
demayer 0:6bf0743ece18 2746 if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
demayer 0:6bf0743ece18 2747 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 2748 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2749 fp->clust = clst; /* Update current cluster */
demayer 0:6bf0743ece18 2750 if (fp->sclust == 0) fp->sclust = clst; /* Set start cluster if the first write */
demayer 0:6bf0743ece18 2751
demayer 0:6bf0743ece18 2752 #if FLUSH_ON_NEW_CLUSTER
demayer 0:6bf0743ece18 2753 // We do not need to flush for the first cluster
demayer 0:6bf0743ece18 2754 if (fp->fptr != 0) {
demayer 0:6bf0743ece18 2755 need_sync = true;
demayer 0:6bf0743ece18 2756 }
demayer 0:6bf0743ece18 2757 #endif
demayer 0:6bf0743ece18 2758 }
demayer 0:6bf0743ece18 2759 #if _FS_TINY
demayer 0:6bf0743ece18 2760 if (fp->fs->winsect == fp->dsect && sync_window(fp->fs)) /* Write-back sector cache */
demayer 0:6bf0743ece18 2761 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2762 #else
demayer 0:6bf0743ece18 2763 if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
demayer 0:6bf0743ece18 2764 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 2765 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2766 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 2767 }
demayer 0:6bf0743ece18 2768 #endif
demayer 0:6bf0743ece18 2769 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
demayer 0:6bf0743ece18 2770 if (!sect) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 2771 sect += csect;
demayer 0:6bf0743ece18 2772 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
demayer 0:6bf0743ece18 2773 if (cc) { /* Write maximum contiguous sectors directly */
demayer 0:6bf0743ece18 2774 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
demayer 0:6bf0743ece18 2775 cc = fp->fs->csize - csect;
demayer 0:6bf0743ece18 2776 if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)
demayer 0:6bf0743ece18 2777 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2778 #if _FS_MINIMIZE <= 2
demayer 0:6bf0743ece18 2779 #if _FS_TINY
demayer 0:6bf0743ece18 2780 if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
demayer 0:6bf0743ece18 2781 mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
demayer 0:6bf0743ece18 2782 fp->fs->wflag = 0;
demayer 0:6bf0743ece18 2783 }
demayer 0:6bf0743ece18 2784 #else
demayer 0:6bf0743ece18 2785 if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
demayer 0:6bf0743ece18 2786 mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
demayer 0:6bf0743ece18 2787 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 2788 }
demayer 0:6bf0743ece18 2789 #endif
demayer 0:6bf0743ece18 2790 #endif
demayer 0:6bf0743ece18 2791 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
demayer 0:6bf0743ece18 2792 #if FLUSH_ON_NEW_SECTOR
demayer 0:6bf0743ece18 2793 need_sync = true;
demayer 0:6bf0743ece18 2794 #endif
demayer 0:6bf0743ece18 2795 continue;
demayer 0:6bf0743ece18 2796 }
demayer 0:6bf0743ece18 2797 #if _FS_TINY
demayer 0:6bf0743ece18 2798 if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
demayer 0:6bf0743ece18 2799 if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2800 fp->fs->winsect = sect;
demayer 0:6bf0743ece18 2801 }
demayer 0:6bf0743ece18 2802 #else
demayer 0:6bf0743ece18 2803 if (fp->dsect != sect) { /* Fill sector cache with file data */
demayer 0:6bf0743ece18 2804 if (fp->fptr < fp->fsize &&
demayer 0:6bf0743ece18 2805 disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
demayer 0:6bf0743ece18 2806 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2807 }
demayer 0:6bf0743ece18 2808 #endif
demayer 0:6bf0743ece18 2809 fp->dsect = sect;
demayer 0:6bf0743ece18 2810 }
demayer 0:6bf0743ece18 2811 wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
demayer 0:6bf0743ece18 2812 if (wcnt > btw) wcnt = btw;
demayer 0:6bf0743ece18 2813 #if _FS_TINY
demayer 0:6bf0743ece18 2814 if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
demayer 0:6bf0743ece18 2815 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2816 mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
demayer 0:6bf0743ece18 2817 fp->fs->wflag = 1;
demayer 0:6bf0743ece18 2818 #else
demayer 0:6bf0743ece18 2819 mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
demayer 0:6bf0743ece18 2820 fp->flag |= FA__DIRTY;
demayer 0:6bf0743ece18 2821 #endif
demayer 0:6bf0743ece18 2822 }
demayer 0:6bf0743ece18 2823
demayer 0:6bf0743ece18 2824 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
demayer 0:6bf0743ece18 2825 fp->flag |= FA__WRITTEN; /* Set file change flag */
demayer 0:6bf0743ece18 2826
demayer 0:6bf0743ece18 2827 if (need_sync) {
demayer 0:6bf0743ece18 2828 f_sync (fp);
demayer 0:6bf0743ece18 2829 }
demayer 0:6bf0743ece18 2830
demayer 0:6bf0743ece18 2831 LEAVE_FF(fp->fs, FR_OK);
demayer 0:6bf0743ece18 2832 }
demayer 0:6bf0743ece18 2833
demayer 0:6bf0743ece18 2834
demayer 0:6bf0743ece18 2835
demayer 0:6bf0743ece18 2836
demayer 0:6bf0743ece18 2837 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2838 /* Synchronize the File */
demayer 0:6bf0743ece18 2839 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2840
demayer 0:6bf0743ece18 2841 FRESULT f_sync (
demayer 0:6bf0743ece18 2842 FIL* fp /* Pointer to the file object */
demayer 0:6bf0743ece18 2843 )
demayer 0:6bf0743ece18 2844 {
demayer 0:6bf0743ece18 2845 FRESULT res;
demayer 0:6bf0743ece18 2846 DWORD tm;
demayer 0:6bf0743ece18 2847 BYTE *dir;
demayer 0:6bf0743ece18 2848
demayer 0:6bf0743ece18 2849
demayer 0:6bf0743ece18 2850 res = validate(fp); /* Check validity of the object */
demayer 0:6bf0743ece18 2851 if (res == FR_OK) {
demayer 0:6bf0743ece18 2852 if (fp->flag & FA__WRITTEN) { /* Is there any change to the file? */
demayer 0:6bf0743ece18 2853 #if !_FS_TINY
demayer 0:6bf0743ece18 2854 if (fp->flag & FA__DIRTY) { /* Write-back cached data if needed */
demayer 0:6bf0743ece18 2855 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 2856 LEAVE_FF(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 2857 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 2858 }
demayer 0:6bf0743ece18 2859 #endif
demayer 0:6bf0743ece18 2860 /* Update the directory entry */
demayer 0:6bf0743ece18 2861 res = move_window(fp->fs, fp->dir_sect);
demayer 0:6bf0743ece18 2862 if (res == FR_OK) {
demayer 0:6bf0743ece18 2863 dir = fp->dir_ptr;
demayer 0:6bf0743ece18 2864 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
demayer 0:6bf0743ece18 2865 ST_DWORD(dir + DIR_FileSize, fp->fsize); /* Update file size */
demayer 0:6bf0743ece18 2866 st_clust(dir, fp->sclust); /* Update start cluster */
demayer 0:6bf0743ece18 2867 tm = GET_FATTIME(); /* Update modified time */
demayer 0:6bf0743ece18 2868 ST_DWORD(dir + DIR_WrtTime, tm);
demayer 0:6bf0743ece18 2869 ST_WORD(dir + DIR_LstAccDate, 0);
demayer 0:6bf0743ece18 2870 fp->flag &= ~FA__WRITTEN;
demayer 0:6bf0743ece18 2871 fp->fs->wflag = 1;
demayer 0:6bf0743ece18 2872 res = sync_fs(fp->fs);
demayer 0:6bf0743ece18 2873 }
demayer 0:6bf0743ece18 2874 }
demayer 0:6bf0743ece18 2875 }
demayer 0:6bf0743ece18 2876
demayer 0:6bf0743ece18 2877 LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 2878 }
demayer 0:6bf0743ece18 2879
demayer 0:6bf0743ece18 2880 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 2881
demayer 0:6bf0743ece18 2882
demayer 0:6bf0743ece18 2883
demayer 0:6bf0743ece18 2884
demayer 0:6bf0743ece18 2885 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2886 /* Close File */
demayer 0:6bf0743ece18 2887 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2888
demayer 0:6bf0743ece18 2889 FRESULT f_close (
demayer 0:6bf0743ece18 2890 FIL *fp /* Pointer to the file object to be closed */
demayer 0:6bf0743ece18 2891 )
demayer 0:6bf0743ece18 2892 {
demayer 0:6bf0743ece18 2893 FRESULT res;
demayer 0:6bf0743ece18 2894
demayer 0:6bf0743ece18 2895
demayer 0:6bf0743ece18 2896 #if !_FS_READONLY
demayer 0:6bf0743ece18 2897 res = f_sync(fp); /* Flush cached data */
demayer 0:6bf0743ece18 2898 if (res == FR_OK)
demayer 0:6bf0743ece18 2899 #endif
demayer 0:6bf0743ece18 2900 {
demayer 0:6bf0743ece18 2901 res = validate(fp); /* Lock volume */
demayer 0:6bf0743ece18 2902 if (res == FR_OK) {
demayer 0:6bf0743ece18 2903 #if _FS_REENTRANT
demayer 0:6bf0743ece18 2904 FATFS *fs = fp->fs;
demayer 0:6bf0743ece18 2905 #endif
demayer 0:6bf0743ece18 2906 #if _FS_LOCK
demayer 0:6bf0743ece18 2907 res = dec_lock(fp->lockid); /* Decrement file open counter */
demayer 0:6bf0743ece18 2908 if (res == FR_OK)
demayer 0:6bf0743ece18 2909 #endif
demayer 0:6bf0743ece18 2910 fp->fs = 0; /* Invalidate file object */
demayer 0:6bf0743ece18 2911 #if _FS_REENTRANT
demayer 0:6bf0743ece18 2912 unlock_fs(fs, FR_OK); /* Unlock volume */
demayer 0:6bf0743ece18 2913 #endif
demayer 0:6bf0743ece18 2914 #if !_FS_TINY && _FS_HEAPBUF
demayer 0:6bf0743ece18 2915 ff_memfree(fp->buf); /* Deallocate buffer */
demayer 0:6bf0743ece18 2916 #endif
demayer 0:6bf0743ece18 2917 }
demayer 0:6bf0743ece18 2918 }
demayer 0:6bf0743ece18 2919 return res;
demayer 0:6bf0743ece18 2920 }
demayer 0:6bf0743ece18 2921
demayer 0:6bf0743ece18 2922
demayer 0:6bf0743ece18 2923
demayer 0:6bf0743ece18 2924
demayer 0:6bf0743ece18 2925 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2926 /* Change Current Directory or Current Drive, Get Current Directory */
demayer 0:6bf0743ece18 2927 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 2928
demayer 0:6bf0743ece18 2929 #if _FS_RPATH >= 1
demayer 0:6bf0743ece18 2930 #if _VOLUMES >= 2
demayer 0:6bf0743ece18 2931 FRESULT f_chdrive (
demayer 0:6bf0743ece18 2932 const TCHAR* path /* Drive number */
demayer 0:6bf0743ece18 2933 )
demayer 0:6bf0743ece18 2934 {
demayer 0:6bf0743ece18 2935 int vol;
demayer 0:6bf0743ece18 2936
demayer 0:6bf0743ece18 2937
demayer 0:6bf0743ece18 2938 vol = get_ldnumber(&path);
demayer 0:6bf0743ece18 2939 if (vol < 0) return FR_INVALID_DRIVE;
demayer 0:6bf0743ece18 2940
demayer 0:6bf0743ece18 2941 CurrVol = (BYTE)vol;
demayer 0:6bf0743ece18 2942
demayer 0:6bf0743ece18 2943 return FR_OK;
demayer 0:6bf0743ece18 2944 }
demayer 0:6bf0743ece18 2945 #endif
demayer 0:6bf0743ece18 2946
demayer 0:6bf0743ece18 2947
demayer 0:6bf0743ece18 2948 FRESULT f_chdir (
demayer 0:6bf0743ece18 2949 const TCHAR* path /* Pointer to the directory path */
demayer 0:6bf0743ece18 2950 )
demayer 0:6bf0743ece18 2951 {
demayer 0:6bf0743ece18 2952 FRESULT res;
demayer 0:6bf0743ece18 2953 FATFS_DIR dj;
demayer 0:6bf0743ece18 2954 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 2955
demayer 0:6bf0743ece18 2956
demayer 0:6bf0743ece18 2957 /* Get logical drive number */
demayer 0:6bf0743ece18 2958 res = find_volume(&dj.fs, &path, 0);
demayer 0:6bf0743ece18 2959 if (res == FR_OK) {
demayer 0:6bf0743ece18 2960 INIT_BUF(dj);
demayer 0:6bf0743ece18 2961 res = follow_path(&dj, path); /* Follow the path */
demayer 0:6bf0743ece18 2962 FREE_BUF();
demayer 0:6bf0743ece18 2963 if (res == FR_OK) { /* Follow completed */
demayer 0:6bf0743ece18 2964 if (!dj.dir) {
demayer 0:6bf0743ece18 2965 dj.fs->cdir = dj.sclust; /* Start directory itself */
demayer 0:6bf0743ece18 2966 } else {
demayer 0:6bf0743ece18 2967 if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
demayer 0:6bf0743ece18 2968 dj.fs->cdir = ld_clust(dj.fs, dj.dir);
demayer 0:6bf0743ece18 2969 else
demayer 0:6bf0743ece18 2970 res = FR_NO_PATH; /* Reached but a file */
demayer 0:6bf0743ece18 2971 }
demayer 0:6bf0743ece18 2972 }
demayer 0:6bf0743ece18 2973 if (res == FR_NO_FILE) res = FR_NO_PATH;
demayer 0:6bf0743ece18 2974 }
demayer 0:6bf0743ece18 2975
demayer 0:6bf0743ece18 2976 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 2977 }
demayer 0:6bf0743ece18 2978
demayer 0:6bf0743ece18 2979
demayer 0:6bf0743ece18 2980 #if _FS_RPATH >= 2
demayer 0:6bf0743ece18 2981 FRESULT f_getcwd (
demayer 0:6bf0743ece18 2982 TCHAR* buff, /* Pointer to the directory path */
demayer 0:6bf0743ece18 2983 UINT len /* Size of path */
demayer 0:6bf0743ece18 2984 )
demayer 0:6bf0743ece18 2985 {
demayer 0:6bf0743ece18 2986 FRESULT res;
demayer 0:6bf0743ece18 2987 FATFS_DIR dj;
demayer 0:6bf0743ece18 2988 UINT i, n;
demayer 0:6bf0743ece18 2989 DWORD ccl;
demayer 0:6bf0743ece18 2990 TCHAR *tp;
demayer 0:6bf0743ece18 2991 FILINFO fno;
demayer 0:6bf0743ece18 2992 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 2993
demayer 0:6bf0743ece18 2994
demayer 0:6bf0743ece18 2995 *buff = 0;
demayer 0:6bf0743ece18 2996 /* Get logical drive number */
demayer 0:6bf0743ece18 2997 res = find_volume(&dj.fs, (const TCHAR**)&buff, 0); /* Get current volume */
demayer 0:6bf0743ece18 2998 if (res == FR_OK) {
demayer 0:6bf0743ece18 2999 INIT_BUF(dj);
demayer 0:6bf0743ece18 3000 i = len; /* Bottom of buffer (directory stack base) */
demayer 0:6bf0743ece18 3001 dj.sclust = dj.fs->cdir; /* Start to follow upper directory from current directory */
demayer 0:6bf0743ece18 3002 while ((ccl = dj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
demayer 0:6bf0743ece18 3003 res = dir_sdi(&dj, 1); /* Get parent directory */
demayer 0:6bf0743ece18 3004 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3005 res = dir_read(&dj, 0);
demayer 0:6bf0743ece18 3006 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3007 dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent directory */
demayer 0:6bf0743ece18 3008 res = dir_sdi(&dj, 0);
demayer 0:6bf0743ece18 3009 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3010 do { /* Find the entry links to the child directory */
demayer 0:6bf0743ece18 3011 res = dir_read(&dj, 0);
demayer 0:6bf0743ece18 3012 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3013 if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
demayer 0:6bf0743ece18 3014 res = dir_next(&dj, 0);
demayer 0:6bf0743ece18 3015 } while (res == FR_OK);
demayer 0:6bf0743ece18 3016 if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
demayer 0:6bf0743ece18 3017 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3018 #if _USE_LFN
demayer 0:6bf0743ece18 3019 fno.lfname = buff;
demayer 0:6bf0743ece18 3020 fno.lfsize = i;
demayer 0:6bf0743ece18 3021 #endif
demayer 0:6bf0743ece18 3022 get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
demayer 0:6bf0743ece18 3023 tp = fno.fname;
demayer 0:6bf0743ece18 3024 #if _USE_LFN
demayer 0:6bf0743ece18 3025 if (*buff) tp = buff;
demayer 0:6bf0743ece18 3026 #endif
demayer 0:6bf0743ece18 3027 for (n = 0; tp[n]; n++) ;
demayer 0:6bf0743ece18 3028 if (i < n + 3) {
demayer 0:6bf0743ece18 3029 res = FR_NOT_ENOUGH_CORE; break;
demayer 0:6bf0743ece18 3030 }
demayer 0:6bf0743ece18 3031 while (n) buff[--i] = tp[--n];
demayer 0:6bf0743ece18 3032 buff[--i] = '/';
demayer 0:6bf0743ece18 3033 }
demayer 0:6bf0743ece18 3034 tp = buff;
demayer 0:6bf0743ece18 3035 if (res == FR_OK) {
demayer 0:6bf0743ece18 3036 #if _VOLUMES >= 2
demayer 0:6bf0743ece18 3037 *tp++ = '0' + CurrVol; /* Put drive number */
demayer 0:6bf0743ece18 3038 *tp++ = ':';
demayer 0:6bf0743ece18 3039 #endif
demayer 0:6bf0743ece18 3040 if (i == len) { /* Root-directory */
demayer 0:6bf0743ece18 3041 *tp++ = '/';
demayer 0:6bf0743ece18 3042 } else { /* Sub-directroy */
demayer 0:6bf0743ece18 3043 do /* Add stacked path str */
demayer 0:6bf0743ece18 3044 *tp++ = buff[i++];
demayer 0:6bf0743ece18 3045 while (i < len);
demayer 0:6bf0743ece18 3046 }
demayer 0:6bf0743ece18 3047 }
demayer 0:6bf0743ece18 3048 *tp = 0;
demayer 0:6bf0743ece18 3049 FREE_BUF();
demayer 0:6bf0743ece18 3050 }
demayer 0:6bf0743ece18 3051
demayer 0:6bf0743ece18 3052 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3053 }
demayer 0:6bf0743ece18 3054 #endif /* _FS_RPATH >= 2 */
demayer 0:6bf0743ece18 3055 #endif /* _FS_RPATH >= 1 */
demayer 0:6bf0743ece18 3056
demayer 0:6bf0743ece18 3057
demayer 0:6bf0743ece18 3058
demayer 0:6bf0743ece18 3059 #if _FS_MINIMIZE <= 2
demayer 0:6bf0743ece18 3060 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3061 /* Seek File R/W Pointer */
demayer 0:6bf0743ece18 3062 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3063
demayer 0:6bf0743ece18 3064 FRESULT f_lseek (
demayer 0:6bf0743ece18 3065 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 3066 DWORD ofs /* File pointer from top of file */
demayer 0:6bf0743ece18 3067 )
demayer 0:6bf0743ece18 3068 {
demayer 0:6bf0743ece18 3069 FRESULT res;
demayer 0:6bf0743ece18 3070 DWORD clst, bcs, nsect, ifptr;
demayer 0:6bf0743ece18 3071 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 3072 DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
demayer 0:6bf0743ece18 3073 #endif
demayer 0:6bf0743ece18 3074
demayer 0:6bf0743ece18 3075
demayer 0:6bf0743ece18 3076 res = validate(fp); /* Check validity of the object */
demayer 0:6bf0743ece18 3077 if (res != FR_OK) LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 3078 if (fp->err) /* Check error */
demayer 0:6bf0743ece18 3079 LEAVE_FF(fp->fs, (FRESULT)fp->err);
demayer 0:6bf0743ece18 3080
demayer 0:6bf0743ece18 3081 #if _USE_FASTSEEK
demayer 0:6bf0743ece18 3082 if (fp->cltbl) { /* Fast seek */
demayer 0:6bf0743ece18 3083 if (ofs == CREATE_LINKMAP) { /* Create CLMT */
demayer 0:6bf0743ece18 3084 tbl = fp->cltbl;
demayer 0:6bf0743ece18 3085 tlen = *tbl++; ulen = 2; /* Given table size and required table size */
demayer 0:6bf0743ece18 3086 cl = fp->sclust; /* Top of the chain */
demayer 0:6bf0743ece18 3087 if (cl) {
demayer 0:6bf0743ece18 3088 do {
demayer 0:6bf0743ece18 3089 /* Get a fragment */
demayer 0:6bf0743ece18 3090 tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
demayer 0:6bf0743ece18 3091 do {
demayer 0:6bf0743ece18 3092 pcl = cl; ncl++;
demayer 0:6bf0743ece18 3093 cl = get_fat(fp->fs, cl);
demayer 0:6bf0743ece18 3094 if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 3095 if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3096 } while (cl == pcl + 1);
demayer 0:6bf0743ece18 3097 if (ulen <= tlen) { /* Store the length and top of the fragment */
demayer 0:6bf0743ece18 3098 *tbl++ = ncl; *tbl++ = tcl;
demayer 0:6bf0743ece18 3099 }
demayer 0:6bf0743ece18 3100 } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
demayer 0:6bf0743ece18 3101 }
demayer 0:6bf0743ece18 3102 *fp->cltbl = ulen; /* Number of items used */
demayer 0:6bf0743ece18 3103 if (ulen <= tlen)
demayer 0:6bf0743ece18 3104 *tbl = 0; /* Terminate table */
demayer 0:6bf0743ece18 3105 else
demayer 0:6bf0743ece18 3106 res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
demayer 0:6bf0743ece18 3107
demayer 0:6bf0743ece18 3108 } else { /* Fast seek */
demayer 0:6bf0743ece18 3109 if (ofs > fp->fsize) /* Clip offset at the file size */
demayer 0:6bf0743ece18 3110 ofs = fp->fsize;
demayer 0:6bf0743ece18 3111 fp->fptr = ofs; /* Set file pointer */
demayer 0:6bf0743ece18 3112 if (ofs) {
demayer 0:6bf0743ece18 3113 fp->clust = clmt_clust(fp, ofs - 1);
demayer 0:6bf0743ece18 3114 dsc = clust2sect(fp->fs, fp->clust);
demayer 0:6bf0743ece18 3115 if (!dsc) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 3116 dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
demayer 0:6bf0743ece18 3117 if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
demayer 0:6bf0743ece18 3118 #if !_FS_TINY
demayer 0:6bf0743ece18 3119 #if !_FS_READONLY
demayer 0:6bf0743ece18 3120 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
demayer 0:6bf0743ece18 3121 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 3122 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3123 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 3124 }
demayer 0:6bf0743ece18 3125 #endif
demayer 0:6bf0743ece18 3126 if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
demayer 0:6bf0743ece18 3127 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3128 #endif
demayer 0:6bf0743ece18 3129 fp->dsect = dsc;
demayer 0:6bf0743ece18 3130 }
demayer 0:6bf0743ece18 3131 }
demayer 0:6bf0743ece18 3132 }
demayer 0:6bf0743ece18 3133 } else
demayer 0:6bf0743ece18 3134 #endif
demayer 0:6bf0743ece18 3135
demayer 0:6bf0743ece18 3136 /* Normal Seek */
demayer 0:6bf0743ece18 3137 {
demayer 0:6bf0743ece18 3138 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
demayer 0:6bf0743ece18 3139 #if !_FS_READONLY
demayer 0:6bf0743ece18 3140 && !(fp->flag & FA_WRITE)
demayer 0:6bf0743ece18 3141 #endif
demayer 0:6bf0743ece18 3142 ) ofs = fp->fsize;
demayer 0:6bf0743ece18 3143
demayer 0:6bf0743ece18 3144 ifptr = fp->fptr;
demayer 0:6bf0743ece18 3145 fp->fptr = nsect = 0;
demayer 0:6bf0743ece18 3146 if (ofs) {
demayer 0:6bf0743ece18 3147 bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
demayer 0:6bf0743ece18 3148 if (ifptr > 0 &&
demayer 0:6bf0743ece18 3149 (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
demayer 0:6bf0743ece18 3150 fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
demayer 0:6bf0743ece18 3151 ofs -= fp->fptr;
demayer 0:6bf0743ece18 3152 clst = fp->clust;
demayer 0:6bf0743ece18 3153 } else { /* When seek to back cluster, */
demayer 0:6bf0743ece18 3154 clst = fp->sclust; /* start from the first cluster */
demayer 0:6bf0743ece18 3155 #if !_FS_READONLY
demayer 0:6bf0743ece18 3156 if (clst == 0) { /* If no cluster chain, create a new chain */
demayer 0:6bf0743ece18 3157 clst = create_chain(fp->fs, 0);
demayer 0:6bf0743ece18 3158 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 3159 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3160 fp->sclust = clst;
demayer 0:6bf0743ece18 3161 }
demayer 0:6bf0743ece18 3162 #endif
demayer 0:6bf0743ece18 3163 fp->clust = clst;
demayer 0:6bf0743ece18 3164 }
demayer 0:6bf0743ece18 3165 if (clst != 0) {
demayer 0:6bf0743ece18 3166 while (ofs > bcs) { /* Cluster following loop */
demayer 0:6bf0743ece18 3167 #if !_FS_READONLY
demayer 0:6bf0743ece18 3168 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
demayer 0:6bf0743ece18 3169 clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
demayer 0:6bf0743ece18 3170 if (clst == 0) { /* When disk gets full, clip file size */
demayer 0:6bf0743ece18 3171 ofs = bcs; break;
demayer 0:6bf0743ece18 3172 }
demayer 0:6bf0743ece18 3173 } else
demayer 0:6bf0743ece18 3174 #endif
demayer 0:6bf0743ece18 3175 clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
demayer 0:6bf0743ece18 3176 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3177 if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 3178 fp->clust = clst;
demayer 0:6bf0743ece18 3179 fp->fptr += bcs;
demayer 0:6bf0743ece18 3180 ofs -= bcs;
demayer 0:6bf0743ece18 3181 }
demayer 0:6bf0743ece18 3182 fp->fptr += ofs;
demayer 0:6bf0743ece18 3183 if (ofs % SS(fp->fs)) {
demayer 0:6bf0743ece18 3184 nsect = clust2sect(fp->fs, clst); /* Current sector */
demayer 0:6bf0743ece18 3185 if (!nsect) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 3186 nsect += ofs / SS(fp->fs);
demayer 0:6bf0743ece18 3187 }
demayer 0:6bf0743ece18 3188 }
demayer 0:6bf0743ece18 3189 }
demayer 0:6bf0743ece18 3190 if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
demayer 0:6bf0743ece18 3191 #if !_FS_TINY
demayer 0:6bf0743ece18 3192 #if !_FS_READONLY
demayer 0:6bf0743ece18 3193 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
demayer 0:6bf0743ece18 3194 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 3195 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3196 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 3197 }
demayer 0:6bf0743ece18 3198 #endif
demayer 0:6bf0743ece18 3199 if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
demayer 0:6bf0743ece18 3200 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 3201 #endif
demayer 0:6bf0743ece18 3202 fp->dsect = nsect;
demayer 0:6bf0743ece18 3203 }
demayer 0:6bf0743ece18 3204 #if !_FS_READONLY
demayer 0:6bf0743ece18 3205 if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
demayer 0:6bf0743ece18 3206 fp->fsize = fp->fptr;
demayer 0:6bf0743ece18 3207 fp->flag |= FA__WRITTEN;
demayer 0:6bf0743ece18 3208 }
demayer 0:6bf0743ece18 3209 #endif
demayer 0:6bf0743ece18 3210 }
demayer 0:6bf0743ece18 3211
demayer 0:6bf0743ece18 3212 LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 3213 }
demayer 0:6bf0743ece18 3214
demayer 0:6bf0743ece18 3215
demayer 0:6bf0743ece18 3216
demayer 0:6bf0743ece18 3217 #if _FS_MINIMIZE <= 1
demayer 0:6bf0743ece18 3218 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3219 /* Create a Directory Object */
demayer 0:6bf0743ece18 3220 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3221
demayer 0:6bf0743ece18 3222 FRESULT f_opendir (
demayer 0:6bf0743ece18 3223 FATFS_DIR* dp, /* Pointer to directory object to create */
demayer 0:6bf0743ece18 3224 const TCHAR* path /* Pointer to the directory path */
demayer 0:6bf0743ece18 3225 )
demayer 0:6bf0743ece18 3226 {
demayer 0:6bf0743ece18 3227 FRESULT res;
demayer 0:6bf0743ece18 3228 FATFS* fs;
demayer 0:6bf0743ece18 3229 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3230
demayer 0:6bf0743ece18 3231
demayer 0:6bf0743ece18 3232 if (!dp) return FR_INVALID_OBJECT;
demayer 0:6bf0743ece18 3233
demayer 0:6bf0743ece18 3234 /* Get logical drive number */
demayer 0:6bf0743ece18 3235 res = find_volume(&fs, &path, 0);
demayer 0:6bf0743ece18 3236 if (res == FR_OK) {
demayer 0:6bf0743ece18 3237 dp->fs = fs;
demayer 0:6bf0743ece18 3238 INIT_BUF(*dp);
demayer 0:6bf0743ece18 3239 res = follow_path(dp, path); /* Follow the path to the directory */
demayer 0:6bf0743ece18 3240 FREE_BUF();
demayer 0:6bf0743ece18 3241 if (res == FR_OK) { /* Follow completed */
demayer 0:6bf0743ece18 3242 if (dp->dir) { /* It is not the origin directory itself */
demayer 0:6bf0743ece18 3243 if (dp->dir[DIR_Attr] & AM_DIR) /* The object is a sub directory */
demayer 0:6bf0743ece18 3244 dp->sclust = ld_clust(fs, dp->dir);
demayer 0:6bf0743ece18 3245 else /* The object is a file */
demayer 0:6bf0743ece18 3246 res = FR_NO_PATH;
demayer 0:6bf0743ece18 3247 }
demayer 0:6bf0743ece18 3248 if (res == FR_OK) {
demayer 0:6bf0743ece18 3249 dp->id = fs->id;
demayer 0:6bf0743ece18 3250 res = dir_sdi(dp, 0); /* Rewind directory */
demayer 0:6bf0743ece18 3251 #if _FS_LOCK
demayer 0:6bf0743ece18 3252 if (res == FR_OK) {
demayer 0:6bf0743ece18 3253 if (dp->sclust) {
demayer 0:6bf0743ece18 3254 dp->lockid = inc_lock(dp, 0); /* Lock the sub directory */
demayer 0:6bf0743ece18 3255 if (!dp->lockid)
demayer 0:6bf0743ece18 3256 res = FR_TOO_MANY_OPEN_FILES;
demayer 0:6bf0743ece18 3257 } else {
demayer 0:6bf0743ece18 3258 dp->lockid = 0; /* Root directory need not to be locked */
demayer 0:6bf0743ece18 3259 }
demayer 0:6bf0743ece18 3260 }
demayer 0:6bf0743ece18 3261 #endif
demayer 0:6bf0743ece18 3262 }
demayer 0:6bf0743ece18 3263 }
demayer 0:6bf0743ece18 3264 if (res == FR_NO_FILE) res = FR_NO_PATH;
demayer 0:6bf0743ece18 3265 }
demayer 0:6bf0743ece18 3266 if (res != FR_OK) dp->fs = 0; /* Invalidate the directory object if function faild */
demayer 0:6bf0743ece18 3267
demayer 0:6bf0743ece18 3268 LEAVE_FF(fs, res);
demayer 0:6bf0743ece18 3269 }
demayer 0:6bf0743ece18 3270
demayer 0:6bf0743ece18 3271
demayer 0:6bf0743ece18 3272
demayer 0:6bf0743ece18 3273
demayer 0:6bf0743ece18 3274 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3275 /* Close Directory */
demayer 0:6bf0743ece18 3276 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3277
demayer 0:6bf0743ece18 3278 FRESULT f_closedir (
demayer 0:6bf0743ece18 3279 FATFS_DIR *dp /* Pointer to the directory object to be closed */
demayer 0:6bf0743ece18 3280 )
demayer 0:6bf0743ece18 3281 {
demayer 0:6bf0743ece18 3282 FRESULT res;
demayer 0:6bf0743ece18 3283
demayer 0:6bf0743ece18 3284
demayer 0:6bf0743ece18 3285 res = validate(dp);
demayer 0:6bf0743ece18 3286 if (res == FR_OK) {
demayer 0:6bf0743ece18 3287 #if _FS_REENTRANT
demayer 0:6bf0743ece18 3288 FATFS *fs = dp->fs;
demayer 0:6bf0743ece18 3289 #endif
demayer 0:6bf0743ece18 3290 #if _FS_LOCK
demayer 0:6bf0743ece18 3291 if (dp->lockid) /* Decrement sub-directory open counter */
demayer 0:6bf0743ece18 3292 res = dec_lock(dp->lockid);
demayer 0:6bf0743ece18 3293 if (res == FR_OK)
demayer 0:6bf0743ece18 3294 #endif
demayer 0:6bf0743ece18 3295 dp->fs = 0; /* Invalidate directory object */
demayer 0:6bf0743ece18 3296 #if _FS_REENTRANT
demayer 0:6bf0743ece18 3297 unlock_fs(fs, FR_OK); /* Unlock volume */
demayer 0:6bf0743ece18 3298 #endif
demayer 0:6bf0743ece18 3299 }
demayer 0:6bf0743ece18 3300 return res;
demayer 0:6bf0743ece18 3301 }
demayer 0:6bf0743ece18 3302
demayer 0:6bf0743ece18 3303
demayer 0:6bf0743ece18 3304
demayer 0:6bf0743ece18 3305
demayer 0:6bf0743ece18 3306 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3307 /* Read Directory Entries in Sequence */
demayer 0:6bf0743ece18 3308 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3309
demayer 0:6bf0743ece18 3310 FRESULT f_readdir (
demayer 0:6bf0743ece18 3311 FATFS_DIR* dp, /* Pointer to the open directory object */
demayer 0:6bf0743ece18 3312 FILINFO* fno /* Pointer to file information to return */
demayer 0:6bf0743ece18 3313 )
demayer 0:6bf0743ece18 3314 {
demayer 0:6bf0743ece18 3315 FRESULT res;
demayer 0:6bf0743ece18 3316 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3317
demayer 0:6bf0743ece18 3318
demayer 0:6bf0743ece18 3319 res = validate(dp); /* Check validity of the object */
demayer 0:6bf0743ece18 3320 if (res == FR_OK) {
demayer 0:6bf0743ece18 3321 if (!fno) {
demayer 0:6bf0743ece18 3322 res = dir_sdi(dp, 0); /* Rewind the directory object */
demayer 0:6bf0743ece18 3323 } else {
demayer 0:6bf0743ece18 3324 INIT_BUF(*dp);
demayer 0:6bf0743ece18 3325 res = dir_read(dp, 0); /* Read an item */
demayer 0:6bf0743ece18 3326 if (res == FR_NO_FILE) { /* Reached end of directory */
demayer 0:6bf0743ece18 3327 dp->sect = 0;
demayer 0:6bf0743ece18 3328 res = FR_OK;
demayer 0:6bf0743ece18 3329 }
demayer 0:6bf0743ece18 3330 if (res == FR_OK) { /* A valid entry is found */
demayer 0:6bf0743ece18 3331 get_fileinfo(dp, fno); /* Get the object information */
demayer 0:6bf0743ece18 3332 res = dir_next(dp, 0); /* Increment index for next */
demayer 0:6bf0743ece18 3333 if (res == FR_NO_FILE) {
demayer 0:6bf0743ece18 3334 dp->sect = 0;
demayer 0:6bf0743ece18 3335 res = FR_OK;
demayer 0:6bf0743ece18 3336 }
demayer 0:6bf0743ece18 3337 }
demayer 0:6bf0743ece18 3338 FREE_BUF();
demayer 0:6bf0743ece18 3339 }
demayer 0:6bf0743ece18 3340 }
demayer 0:6bf0743ece18 3341
demayer 0:6bf0743ece18 3342 LEAVE_FF(dp->fs, res);
demayer 0:6bf0743ece18 3343 }
demayer 0:6bf0743ece18 3344
demayer 0:6bf0743ece18 3345
demayer 0:6bf0743ece18 3346
demayer 0:6bf0743ece18 3347 #if _USE_FIND
demayer 0:6bf0743ece18 3348 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3349 /* Find next file */
demayer 0:6bf0743ece18 3350 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3351
demayer 0:6bf0743ece18 3352 FRESULT f_findnext (
demayer 0:6bf0743ece18 3353 FATFS_DIR* dp, /* Pointer to the open directory object */
demayer 0:6bf0743ece18 3354 FILINFO* fno /* Pointer to the file information structure */
demayer 0:6bf0743ece18 3355 )
demayer 0:6bf0743ece18 3356 {
demayer 0:6bf0743ece18 3357 FRESULT res;
demayer 0:6bf0743ece18 3358
demayer 0:6bf0743ece18 3359
demayer 0:6bf0743ece18 3360 for (;;) {
demayer 0:6bf0743ece18 3361 res = f_readdir(dp, fno); /* Get a directory item */
demayer 0:6bf0743ece18 3362 if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
demayer 0:6bf0743ece18 3363 #if _USE_LFN
demayer 0:6bf0743ece18 3364 if (fno->lfname && pattern_matching(dp->pat, fno->lfname, 0, 0)) break; /* Test for LFN if exist */
demayer 0:6bf0743ece18 3365 #endif
demayer 0:6bf0743ece18 3366 if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for SFN */
demayer 0:6bf0743ece18 3367 }
demayer 0:6bf0743ece18 3368 return res;
demayer 0:6bf0743ece18 3369
demayer 0:6bf0743ece18 3370 }
demayer 0:6bf0743ece18 3371
demayer 0:6bf0743ece18 3372
demayer 0:6bf0743ece18 3373
demayer 0:6bf0743ece18 3374 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3375 /* Find first file */
demayer 0:6bf0743ece18 3376 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3377
demayer 0:6bf0743ece18 3378 FRESULT f_findfirst (
demayer 0:6bf0743ece18 3379 FATFS_DIR* dp, /* Pointer to the blank directory object */
demayer 0:6bf0743ece18 3380 FILINFO* fno, /* Pointer to the file information structure */
demayer 0:6bf0743ece18 3381 const TCHAR* path, /* Pointer to the directory to open */
demayer 0:6bf0743ece18 3382 const TCHAR* pattern /* Pointer to the matching pattern */
demayer 0:6bf0743ece18 3383 )
demayer 0:6bf0743ece18 3384 {
demayer 0:6bf0743ece18 3385 FRESULT res;
demayer 0:6bf0743ece18 3386
demayer 0:6bf0743ece18 3387
demayer 0:6bf0743ece18 3388 dp->pat = pattern; /* Save pointer to pattern string */
demayer 0:6bf0743ece18 3389 res = f_opendir(dp, path); /* Open the target directory */
demayer 0:6bf0743ece18 3390 if (res == FR_OK)
demayer 0:6bf0743ece18 3391 res = f_findnext(dp, fno); /* Find the first item */
demayer 0:6bf0743ece18 3392 return res;
demayer 0:6bf0743ece18 3393 }
demayer 0:6bf0743ece18 3394
demayer 0:6bf0743ece18 3395 #endif /* _USE_FIND */
demayer 0:6bf0743ece18 3396
demayer 0:6bf0743ece18 3397
demayer 0:6bf0743ece18 3398
demayer 0:6bf0743ece18 3399 #if _FS_MINIMIZE == 0
demayer 0:6bf0743ece18 3400 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3401 /* Get File Status */
demayer 0:6bf0743ece18 3402 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3403
demayer 0:6bf0743ece18 3404 FRESULT f_stat (
demayer 0:6bf0743ece18 3405 const TCHAR* path, /* Pointer to the file path */
demayer 0:6bf0743ece18 3406 FILINFO* fno /* Pointer to file information to return */
demayer 0:6bf0743ece18 3407 )
demayer 0:6bf0743ece18 3408 {
demayer 0:6bf0743ece18 3409 FRESULT res;
demayer 0:6bf0743ece18 3410 FATFS_DIR dj;
demayer 0:6bf0743ece18 3411 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3412
demayer 0:6bf0743ece18 3413
demayer 0:6bf0743ece18 3414 /* Get logical drive number */
demayer 0:6bf0743ece18 3415 res = find_volume(&dj.fs, &path, 0);
demayer 0:6bf0743ece18 3416 if (res == FR_OK) {
demayer 0:6bf0743ece18 3417 INIT_BUF(dj);
demayer 0:6bf0743ece18 3418 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 3419 if (res == FR_OK) { /* Follow completed */
demayer 0:6bf0743ece18 3420 if (dj.dir) { /* Found an object */
demayer 0:6bf0743ece18 3421 if (fno) get_fileinfo(&dj, fno);
demayer 0:6bf0743ece18 3422 } else { /* It is root directory */
demayer 0:6bf0743ece18 3423 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3424 }
demayer 0:6bf0743ece18 3425 }
demayer 0:6bf0743ece18 3426 FREE_BUF();
demayer 0:6bf0743ece18 3427 }
demayer 0:6bf0743ece18 3428
demayer 0:6bf0743ece18 3429 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3430 }
demayer 0:6bf0743ece18 3431
demayer 0:6bf0743ece18 3432
demayer 0:6bf0743ece18 3433
demayer 0:6bf0743ece18 3434 #if !_FS_READONLY
demayer 0:6bf0743ece18 3435 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3436 /* Get Number of Free Clusters */
demayer 0:6bf0743ece18 3437 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3438
demayer 0:6bf0743ece18 3439 FRESULT f_getfree (
demayer 0:6bf0743ece18 3440 const TCHAR* path, /* Path name of the logical drive number */
demayer 0:6bf0743ece18 3441 DWORD* nclst, /* Pointer to a variable to return number of free clusters */
demayer 0:6bf0743ece18 3442 FATFS** fatfs /* Pointer to return pointer to corresponding file system object */
demayer 0:6bf0743ece18 3443 )
demayer 0:6bf0743ece18 3444 {
demayer 0:6bf0743ece18 3445 FRESULT res;
demayer 0:6bf0743ece18 3446 FATFS *fs;
demayer 0:6bf0743ece18 3447 DWORD nfree, clst, sect, stat;
demayer 0:6bf0743ece18 3448 UINT i;
demayer 0:6bf0743ece18 3449 BYTE fat, *p;
demayer 0:6bf0743ece18 3450
demayer 0:6bf0743ece18 3451
demayer 0:6bf0743ece18 3452 /* Get logical drive number */
demayer 0:6bf0743ece18 3453 res = find_volume(fatfs, &path, 0);
demayer 0:6bf0743ece18 3454 fs = *fatfs;
demayer 0:6bf0743ece18 3455 if (res == FR_OK) {
demayer 0:6bf0743ece18 3456 /* If free_clust is valid, return it without full cluster scan */
demayer 0:6bf0743ece18 3457 if (fs->free_clust <= fs->n_fatent - 2) {
demayer 0:6bf0743ece18 3458 *nclst = fs->free_clust;
demayer 0:6bf0743ece18 3459 } else {
demayer 0:6bf0743ece18 3460 /* Get number of free clusters */
demayer 0:6bf0743ece18 3461 fat = fs->fs_type;
demayer 0:6bf0743ece18 3462 nfree = 0;
demayer 0:6bf0743ece18 3463 if (fat == FS_FAT12) { /* Sector unalighed entries: Search FAT via regular routine. */
demayer 0:6bf0743ece18 3464 clst = 2;
demayer 0:6bf0743ece18 3465 do {
demayer 0:6bf0743ece18 3466 stat = get_fat(fs, clst);
demayer 0:6bf0743ece18 3467 if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
demayer 0:6bf0743ece18 3468 if (stat == 1) { res = FR_INT_ERR; break; }
demayer 0:6bf0743ece18 3469 if (stat == 0) nfree++;
demayer 0:6bf0743ece18 3470 } while (++clst < fs->n_fatent);
demayer 0:6bf0743ece18 3471 } else { /* Sector alighed entries: Accelerate the FAT search. */
demayer 0:6bf0743ece18 3472 clst = fs->n_fatent; sect = fs->fatbase;
demayer 0:6bf0743ece18 3473 i = 0; p = 0;
demayer 0:6bf0743ece18 3474 do {
demayer 0:6bf0743ece18 3475 if (!i) {
demayer 0:6bf0743ece18 3476 res = move_window(fs, sect++);
demayer 0:6bf0743ece18 3477 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3478 p = fs->win;
demayer 0:6bf0743ece18 3479 i = SS(fs);
demayer 0:6bf0743ece18 3480 }
demayer 0:6bf0743ece18 3481 if (fat == FS_FAT16) {
demayer 0:6bf0743ece18 3482 if (LD_WORD(p) == 0) nfree++;
demayer 0:6bf0743ece18 3483 p += 2; i -= 2;
demayer 0:6bf0743ece18 3484 } else {
demayer 0:6bf0743ece18 3485 if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) nfree++;
demayer 0:6bf0743ece18 3486 p += 4; i -= 4;
demayer 0:6bf0743ece18 3487 }
demayer 0:6bf0743ece18 3488 } while (--clst);
demayer 0:6bf0743ece18 3489 }
demayer 0:6bf0743ece18 3490 fs->free_clust = nfree; /* free_clust is valid */
demayer 0:6bf0743ece18 3491 fs->fsi_flag |= 1; /* FSInfo is to be updated */
demayer 0:6bf0743ece18 3492 *nclst = nfree; /* Return the free clusters */
demayer 0:6bf0743ece18 3493 }
demayer 0:6bf0743ece18 3494 }
demayer 0:6bf0743ece18 3495 LEAVE_FF(fs, res);
demayer 0:6bf0743ece18 3496 }
demayer 0:6bf0743ece18 3497
demayer 0:6bf0743ece18 3498
demayer 0:6bf0743ece18 3499
demayer 0:6bf0743ece18 3500
demayer 0:6bf0743ece18 3501 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3502 /* Truncate File */
demayer 0:6bf0743ece18 3503 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3504
demayer 0:6bf0743ece18 3505 FRESULT f_truncate (
demayer 0:6bf0743ece18 3506 FIL* fp /* Pointer to the file object */
demayer 0:6bf0743ece18 3507 )
demayer 0:6bf0743ece18 3508 {
demayer 0:6bf0743ece18 3509 FRESULT res;
demayer 0:6bf0743ece18 3510 DWORD ncl;
demayer 0:6bf0743ece18 3511
demayer 0:6bf0743ece18 3512
demayer 0:6bf0743ece18 3513 res = validate(fp); /* Check validity of the object */
demayer 0:6bf0743ece18 3514 if (res == FR_OK) {
demayer 0:6bf0743ece18 3515 if (fp->err) { /* Check error */
demayer 0:6bf0743ece18 3516 res = (FRESULT)fp->err;
demayer 0:6bf0743ece18 3517 } else {
demayer 0:6bf0743ece18 3518 if (!(fp->flag & FA_WRITE)) /* Check access mode */
demayer 0:6bf0743ece18 3519 res = FR_DENIED;
demayer 0:6bf0743ece18 3520 }
demayer 0:6bf0743ece18 3521 }
demayer 0:6bf0743ece18 3522 if (res == FR_OK) {
demayer 0:6bf0743ece18 3523 if (fp->fsize > fp->fptr) {
demayer 0:6bf0743ece18 3524 fp->fsize = fp->fptr; /* Set file size to current R/W point */
demayer 0:6bf0743ece18 3525 fp->flag |= FA__WRITTEN;
demayer 0:6bf0743ece18 3526 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
demayer 0:6bf0743ece18 3527 res = remove_chain(fp->fs, fp->sclust);
demayer 0:6bf0743ece18 3528 fp->sclust = 0;
demayer 0:6bf0743ece18 3529 } else { /* When truncate a part of the file, remove remaining clusters */
demayer 0:6bf0743ece18 3530 ncl = get_fat(fp->fs, fp->clust);
demayer 0:6bf0743ece18 3531 res = FR_OK;
demayer 0:6bf0743ece18 3532 if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
demayer 0:6bf0743ece18 3533 if (ncl == 1) res = FR_INT_ERR;
demayer 0:6bf0743ece18 3534 if (res == FR_OK && ncl < fp->fs->n_fatent) {
demayer 0:6bf0743ece18 3535 res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
demayer 0:6bf0743ece18 3536 if (res == FR_OK) res = remove_chain(fp->fs, ncl);
demayer 0:6bf0743ece18 3537 }
demayer 0:6bf0743ece18 3538 }
demayer 0:6bf0743ece18 3539 #if !_FS_TINY
demayer 0:6bf0743ece18 3540 if (res == FR_OK && (fp->flag & FA__DIRTY)) {
demayer 0:6bf0743ece18 3541 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
demayer 0:6bf0743ece18 3542 res = FR_DISK_ERR;
demayer 0:6bf0743ece18 3543 else
demayer 0:6bf0743ece18 3544 fp->flag &= ~FA__DIRTY;
demayer 0:6bf0743ece18 3545 }
demayer 0:6bf0743ece18 3546 #endif
demayer 0:6bf0743ece18 3547 }
demayer 0:6bf0743ece18 3548 if (res != FR_OK) fp->err = (FRESULT)res;
demayer 0:6bf0743ece18 3549 }
demayer 0:6bf0743ece18 3550
demayer 0:6bf0743ece18 3551 LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 3552 }
demayer 0:6bf0743ece18 3553
demayer 0:6bf0743ece18 3554
demayer 0:6bf0743ece18 3555
demayer 0:6bf0743ece18 3556
demayer 0:6bf0743ece18 3557 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3558 /* Delete a File or Directory */
demayer 0:6bf0743ece18 3559 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3560
demayer 0:6bf0743ece18 3561 FRESULT f_unlink (
demayer 0:6bf0743ece18 3562 const TCHAR* path /* Pointer to the file or directory path */
demayer 0:6bf0743ece18 3563 )
demayer 0:6bf0743ece18 3564 {
demayer 0:6bf0743ece18 3565 FRESULT res;
demayer 0:6bf0743ece18 3566 FATFS_DIR dj, sdj;
demayer 0:6bf0743ece18 3567 BYTE *dir;
demayer 0:6bf0743ece18 3568 DWORD dclst = 0;
demayer 0:6bf0743ece18 3569 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3570
demayer 0:6bf0743ece18 3571
demayer 0:6bf0743ece18 3572 /* Get logical drive number */
demayer 0:6bf0743ece18 3573 res = find_volume(&dj.fs, &path, 1);
demayer 0:6bf0743ece18 3574 if (res == FR_OK) {
demayer 0:6bf0743ece18 3575 INIT_BUF(dj);
demayer 0:6bf0743ece18 3576 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 3577 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
demayer 0:6bf0743ece18 3578 res = FR_INVALID_NAME; /* Cannot remove dot entry */
demayer 0:6bf0743ece18 3579 #if _FS_LOCK
demayer 0:6bf0743ece18 3580 if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open object */
demayer 0:6bf0743ece18 3581 #endif
demayer 0:6bf0743ece18 3582 if (res == FR_OK) { /* The object is accessible */
demayer 0:6bf0743ece18 3583 dir = dj.dir;
demayer 0:6bf0743ece18 3584 if (!dir) {
demayer 0:6bf0743ece18 3585 res = FR_INVALID_NAME; /* Cannot remove the origin directory */
demayer 0:6bf0743ece18 3586 } else {
demayer 0:6bf0743ece18 3587 if (dir[DIR_Attr] & AM_RDO)
demayer 0:6bf0743ece18 3588 res = FR_DENIED; /* Cannot remove R/O object */
demayer 0:6bf0743ece18 3589 }
demayer 0:6bf0743ece18 3590 if (res == FR_OK) {
demayer 0:6bf0743ece18 3591 dclst = ld_clust(dj.fs, dir);
demayer 0:6bf0743ece18 3592 if (dclst && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-directory ? */
demayer 0:6bf0743ece18 3593 #if _FS_RPATH
demayer 0:6bf0743ece18 3594 if (dclst == dj.fs->cdir) { /* Is it the current directory? */
demayer 0:6bf0743ece18 3595 res = FR_DENIED;
demayer 0:6bf0743ece18 3596 } else
demayer 0:6bf0743ece18 3597 #endif
demayer 0:6bf0743ece18 3598 {
demayer 0:6bf0743ece18 3599 mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Open the sub-directory */
demayer 0:6bf0743ece18 3600 sdj.sclust = dclst;
demayer 0:6bf0743ece18 3601 res = dir_sdi(&sdj, 2);
demayer 0:6bf0743ece18 3602 if (res == FR_OK) {
demayer 0:6bf0743ece18 3603 res = dir_read(&sdj, 0); /* Read an item (excluding dot entries) */
demayer 0:6bf0743ece18 3604 if (res == FR_OK) res = FR_DENIED; /* Not empty? (cannot remove) */
demayer 0:6bf0743ece18 3605 if (res == FR_NO_FILE) res = FR_OK; /* Empty? (can remove) */
demayer 0:6bf0743ece18 3606 }
demayer 0:6bf0743ece18 3607 }
demayer 0:6bf0743ece18 3608 }
demayer 0:6bf0743ece18 3609 }
demayer 0:6bf0743ece18 3610 if (res == FR_OK) {
demayer 0:6bf0743ece18 3611 res = dir_remove(&dj); /* Remove the directory entry */
demayer 0:6bf0743ece18 3612 if (res == FR_OK && dclst) /* Remove the cluster chain if exist */
demayer 0:6bf0743ece18 3613 res = remove_chain(dj.fs, dclst);
demayer 0:6bf0743ece18 3614 if (res == FR_OK) res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 3615 }
demayer 0:6bf0743ece18 3616 }
demayer 0:6bf0743ece18 3617 FREE_BUF();
demayer 0:6bf0743ece18 3618 }
demayer 0:6bf0743ece18 3619
demayer 0:6bf0743ece18 3620 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3621 }
demayer 0:6bf0743ece18 3622
demayer 0:6bf0743ece18 3623
demayer 0:6bf0743ece18 3624
demayer 0:6bf0743ece18 3625
demayer 0:6bf0743ece18 3626 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3627 /* Create a Directory */
demayer 0:6bf0743ece18 3628 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3629
demayer 0:6bf0743ece18 3630 FRESULT f_mkdir (
demayer 0:6bf0743ece18 3631 const TCHAR* path /* Pointer to the directory path */
demayer 0:6bf0743ece18 3632 )
demayer 0:6bf0743ece18 3633 {
demayer 0:6bf0743ece18 3634 FRESULT res;
demayer 0:6bf0743ece18 3635 FATFS_DIR dj;
demayer 0:6bf0743ece18 3636 BYTE *dir, n;
demayer 0:6bf0743ece18 3637 DWORD dsc, dcl, pcl, tm = GET_FATTIME();
demayer 0:6bf0743ece18 3638 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3639
demayer 0:6bf0743ece18 3640
demayer 0:6bf0743ece18 3641 /* Get logical drive number */
demayer 0:6bf0743ece18 3642 res = find_volume(&dj.fs, &path, 1);
demayer 0:6bf0743ece18 3643 if (res == FR_OK) {
demayer 0:6bf0743ece18 3644 INIT_BUF(dj);
demayer 0:6bf0743ece18 3645 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 3646 if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
demayer 0:6bf0743ece18 3647 if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))
demayer 0:6bf0743ece18 3648 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3649 if (res == FR_NO_FILE) { /* Can create a new directory */
demayer 0:6bf0743ece18 3650 dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
demayer 0:6bf0743ece18 3651 res = FR_OK;
demayer 0:6bf0743ece18 3652 if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
demayer 0:6bf0743ece18 3653 if (dcl == 1) res = FR_INT_ERR;
demayer 0:6bf0743ece18 3654 if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
demayer 0:6bf0743ece18 3655 if (res == FR_OK) /* Flush FAT */
demayer 0:6bf0743ece18 3656 res = sync_window(dj.fs);
demayer 0:6bf0743ece18 3657 if (res == FR_OK) { /* Initialize the new directory table */
demayer 0:6bf0743ece18 3658 dsc = clust2sect(dj.fs, dcl);
demayer 0:6bf0743ece18 3659 dir = dj.fs->win;
demayer 0:6bf0743ece18 3660 mem_set(dir, 0, SS(dj.fs));
demayer 0:6bf0743ece18 3661 mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
demayer 0:6bf0743ece18 3662 dir[DIR_Name] = '.';
demayer 0:6bf0743ece18 3663 dir[DIR_Attr] = AM_DIR;
demayer 0:6bf0743ece18 3664 ST_DWORD(dir + DIR_WrtTime, tm);
demayer 0:6bf0743ece18 3665 st_clust(dir, dcl);
demayer 0:6bf0743ece18 3666 mem_cpy(dir + SZ_DIRE, dir, SZ_DIRE); /* Create ".." entry */
demayer 0:6bf0743ece18 3667 dir[SZ_DIRE + 1] = '.'; pcl = dj.sclust;
demayer 0:6bf0743ece18 3668 if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
demayer 0:6bf0743ece18 3669 pcl = 0;
demayer 0:6bf0743ece18 3670 st_clust(dir + SZ_DIRE, pcl);
demayer 0:6bf0743ece18 3671 for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
demayer 0:6bf0743ece18 3672 dj.fs->winsect = dsc++;
demayer 0:6bf0743ece18 3673 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 3674 res = sync_window(dj.fs);
demayer 0:6bf0743ece18 3675 if (res != FR_OK) break;
demayer 0:6bf0743ece18 3676 mem_set(dir, 0, SS(dj.fs));
demayer 0:6bf0743ece18 3677 }
demayer 0:6bf0743ece18 3678 }
demayer 0:6bf0743ece18 3679 if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
demayer 0:6bf0743ece18 3680 if (res != FR_OK) {
demayer 0:6bf0743ece18 3681 remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
demayer 0:6bf0743ece18 3682 } else {
demayer 0:6bf0743ece18 3683 dir = dj.dir;
demayer 0:6bf0743ece18 3684 dir[DIR_Attr] = AM_DIR; /* Attribute */
demayer 0:6bf0743ece18 3685 ST_DWORD(dir + DIR_WrtTime, tm); /* Created time */
demayer 0:6bf0743ece18 3686 st_clust(dir, dcl); /* Table start cluster */
demayer 0:6bf0743ece18 3687 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 3688 res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 3689 }
demayer 0:6bf0743ece18 3690 }
demayer 0:6bf0743ece18 3691 FREE_BUF();
demayer 0:6bf0743ece18 3692 }
demayer 0:6bf0743ece18 3693
demayer 0:6bf0743ece18 3694 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3695 }
demayer 0:6bf0743ece18 3696
demayer 0:6bf0743ece18 3697
demayer 0:6bf0743ece18 3698
demayer 0:6bf0743ece18 3699
demayer 0:6bf0743ece18 3700 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3701 /* Change Attribute */
demayer 0:6bf0743ece18 3702 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3703
demayer 0:6bf0743ece18 3704 FRESULT f_chmod (
demayer 0:6bf0743ece18 3705 const TCHAR* path, /* Pointer to the file path */
demayer 0:6bf0743ece18 3706 BYTE attr, /* Attribute bits */
demayer 0:6bf0743ece18 3707 BYTE mask /* Attribute mask to change */
demayer 0:6bf0743ece18 3708 )
demayer 0:6bf0743ece18 3709 {
demayer 0:6bf0743ece18 3710 FRESULT res;
demayer 0:6bf0743ece18 3711 FATFS_DIR dj;
demayer 0:6bf0743ece18 3712 BYTE *dir;
demayer 0:6bf0743ece18 3713 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3714
demayer 0:6bf0743ece18 3715
demayer 0:6bf0743ece18 3716 res = find_volume(&dj.fs, &path, 1); /* Get logical drive number */
demayer 0:6bf0743ece18 3717 if (res == FR_OK) {
demayer 0:6bf0743ece18 3718 INIT_BUF(dj);
demayer 0:6bf0743ece18 3719 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 3720 FREE_BUF();
demayer 0:6bf0743ece18 3721 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
demayer 0:6bf0743ece18 3722 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3723 if (res == FR_OK) {
demayer 0:6bf0743ece18 3724 dir = dj.dir;
demayer 0:6bf0743ece18 3725 if (!dir) { /* Is it a root directory? */
demayer 0:6bf0743ece18 3726 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3727 } else { /* File or sub directory */
demayer 0:6bf0743ece18 3728 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
demayer 0:6bf0743ece18 3729 dir[DIR_Attr] = (attr & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
demayer 0:6bf0743ece18 3730 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 3731 res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 3732 }
demayer 0:6bf0743ece18 3733 }
demayer 0:6bf0743ece18 3734 }
demayer 0:6bf0743ece18 3735
demayer 0:6bf0743ece18 3736 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3737 }
demayer 0:6bf0743ece18 3738
demayer 0:6bf0743ece18 3739
demayer 0:6bf0743ece18 3740
demayer 0:6bf0743ece18 3741
demayer 0:6bf0743ece18 3742 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3743 /* Rename File/Directory */
demayer 0:6bf0743ece18 3744 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3745
demayer 0:6bf0743ece18 3746 FRESULT f_rename (
demayer 0:6bf0743ece18 3747 const TCHAR* path_old, /* Pointer to the object to be renamed */
demayer 0:6bf0743ece18 3748 const TCHAR* path_new /* Pointer to the new name */
demayer 0:6bf0743ece18 3749 )
demayer 0:6bf0743ece18 3750 {
demayer 0:6bf0743ece18 3751 FRESULT res;
demayer 0:6bf0743ece18 3752 FATFS_DIR djo, djn;
demayer 0:6bf0743ece18 3753 BYTE buf[21], *dir;
demayer 0:6bf0743ece18 3754 DWORD dw;
demayer 0:6bf0743ece18 3755 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3756
demayer 0:6bf0743ece18 3757
demayer 0:6bf0743ece18 3758 /* Get logical drive number of the source object */
demayer 0:6bf0743ece18 3759 res = find_volume(&djo.fs, &path_old, 1);
demayer 0:6bf0743ece18 3760 if (res == FR_OK) {
demayer 0:6bf0743ece18 3761 djn.fs = djo.fs;
demayer 0:6bf0743ece18 3762 INIT_BUF(djo);
demayer 0:6bf0743ece18 3763 res = follow_path(&djo, path_old); /* Check old object */
demayer 0:6bf0743ece18 3764 if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))
demayer 0:6bf0743ece18 3765 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3766 #if _FS_LOCK
demayer 0:6bf0743ece18 3767 if (res == FR_OK) res = chk_lock(&djo, 2);
demayer 0:6bf0743ece18 3768 #endif
demayer 0:6bf0743ece18 3769 if (res == FR_OK) { /* Old object is found */
demayer 0:6bf0743ece18 3770 if (!djo.dir) { /* Is root dir? */
demayer 0:6bf0743ece18 3771 res = FR_NO_FILE;
demayer 0:6bf0743ece18 3772 } else {
demayer 0:6bf0743ece18 3773 mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about object except name */
demayer 0:6bf0743ece18 3774 mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Duplicate the directory object */
demayer 0:6bf0743ece18 3775 if (get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
demayer 0:6bf0743ece18 3776 res = follow_path(&djn, path_new); /* and make sure if new object name is not conflicting */
demayer 0:6bf0743ece18 3777 else
demayer 0:6bf0743ece18 3778 res = FR_INVALID_DRIVE;
demayer 0:6bf0743ece18 3779 if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
demayer 0:6bf0743ece18 3780 if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
demayer 0:6bf0743ece18 3781 res = dir_register(&djn); /* Register the new entry */
demayer 0:6bf0743ece18 3782 if (res == FR_OK) {
demayer 0:6bf0743ece18 3783 /* Start of critical section where any interruption can cause a cross-link */
demayer 0:6bf0743ece18 3784 dir = djn.dir; /* Copy information about object except name */
demayer 0:6bf0743ece18 3785 mem_cpy(dir + 13, buf + 2, 19);
demayer 0:6bf0743ece18 3786 dir[DIR_Attr] = buf[0] | AM_ARC;
demayer 0:6bf0743ece18 3787 djo.fs->wflag = 1;
demayer 0:6bf0743ece18 3788 if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) { /* Update .. entry in the sub-directory if needed */
demayer 0:6bf0743ece18 3789 dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
demayer 0:6bf0743ece18 3790 if (!dw) {
demayer 0:6bf0743ece18 3791 res = FR_INT_ERR;
demayer 0:6bf0743ece18 3792 } else {
demayer 0:6bf0743ece18 3793 res = move_window(djo.fs, dw);
demayer 0:6bf0743ece18 3794 dir = djo.fs->win + SZ_DIRE * 1; /* Ptr to .. entry */
demayer 0:6bf0743ece18 3795 if (res == FR_OK && dir[1] == '.') {
demayer 0:6bf0743ece18 3796 st_clust(dir, djn.sclust);
demayer 0:6bf0743ece18 3797 djo.fs->wflag = 1;
demayer 0:6bf0743ece18 3798 }
demayer 0:6bf0743ece18 3799 }
demayer 0:6bf0743ece18 3800 }
demayer 0:6bf0743ece18 3801 if (res == FR_OK) {
demayer 0:6bf0743ece18 3802 res = dir_remove(&djo); /* Remove old entry */
demayer 0:6bf0743ece18 3803 if (res == FR_OK)
demayer 0:6bf0743ece18 3804 res = sync_fs(djo.fs);
demayer 0:6bf0743ece18 3805 }
demayer 0:6bf0743ece18 3806 /* End of critical section */
demayer 0:6bf0743ece18 3807 }
demayer 0:6bf0743ece18 3808 }
demayer 0:6bf0743ece18 3809 }
demayer 0:6bf0743ece18 3810 }
demayer 0:6bf0743ece18 3811 FREE_BUF();
demayer 0:6bf0743ece18 3812 }
demayer 0:6bf0743ece18 3813
demayer 0:6bf0743ece18 3814 LEAVE_FF(djo.fs, res);
demayer 0:6bf0743ece18 3815 }
demayer 0:6bf0743ece18 3816
demayer 0:6bf0743ece18 3817
demayer 0:6bf0743ece18 3818
demayer 0:6bf0743ece18 3819
demayer 0:6bf0743ece18 3820 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3821 /* Change Timestamp */
demayer 0:6bf0743ece18 3822 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3823
demayer 0:6bf0743ece18 3824 FRESULT f_utime (
demayer 0:6bf0743ece18 3825 const TCHAR* path, /* Pointer to the file/directory name */
demayer 0:6bf0743ece18 3826 const FILINFO* fno /* Pointer to the time stamp to be set */
demayer 0:6bf0743ece18 3827 )
demayer 0:6bf0743ece18 3828 {
demayer 0:6bf0743ece18 3829 FRESULT res;
demayer 0:6bf0743ece18 3830 FATFS_DIR dj;
demayer 0:6bf0743ece18 3831 BYTE *dir;
demayer 0:6bf0743ece18 3832 DEFINE_NAMEBUF;
demayer 0:6bf0743ece18 3833
demayer 0:6bf0743ece18 3834
demayer 0:6bf0743ece18 3835 /* Get logical drive number */
demayer 0:6bf0743ece18 3836 res = find_volume(&dj.fs, &path, 1);
demayer 0:6bf0743ece18 3837 if (res == FR_OK) {
demayer 0:6bf0743ece18 3838 INIT_BUF(dj);
demayer 0:6bf0743ece18 3839 res = follow_path(&dj, path); /* Follow the file path */
demayer 0:6bf0743ece18 3840 FREE_BUF();
demayer 0:6bf0743ece18 3841 if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
demayer 0:6bf0743ece18 3842 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3843 if (res == FR_OK) {
demayer 0:6bf0743ece18 3844 dir = dj.dir;
demayer 0:6bf0743ece18 3845 if (!dir) { /* Root directory */
demayer 0:6bf0743ece18 3846 res = FR_INVALID_NAME;
demayer 0:6bf0743ece18 3847 } else { /* File or sub-directory */
demayer 0:6bf0743ece18 3848 ST_WORD(dir + DIR_WrtTime, fno->ftime);
demayer 0:6bf0743ece18 3849 ST_WORD(dir + DIR_WrtDate, fno->fdate);
demayer 0:6bf0743ece18 3850 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 3851 res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 3852 }
demayer 0:6bf0743ece18 3853 }
demayer 0:6bf0743ece18 3854 }
demayer 0:6bf0743ece18 3855
demayer 0:6bf0743ece18 3856 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3857 }
demayer 0:6bf0743ece18 3858
demayer 0:6bf0743ece18 3859 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 3860 #endif /* _FS_MINIMIZE == 0 */
demayer 0:6bf0743ece18 3861 #endif /* _FS_MINIMIZE <= 1 */
demayer 0:6bf0743ece18 3862 #endif /* _FS_MINIMIZE <= 2 */
demayer 0:6bf0743ece18 3863
demayer 0:6bf0743ece18 3864
demayer 0:6bf0743ece18 3865
demayer 0:6bf0743ece18 3866
demayer 0:6bf0743ece18 3867 #if _USE_LABEL
demayer 0:6bf0743ece18 3868 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3869 /* Get volume label */
demayer 0:6bf0743ece18 3870 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3871
demayer 0:6bf0743ece18 3872 FRESULT f_getlabel (
demayer 0:6bf0743ece18 3873 const TCHAR* path, /* Path name of the logical drive number */
demayer 0:6bf0743ece18 3874 TCHAR* label, /* Pointer to a buffer to return the volume label */
demayer 0:6bf0743ece18 3875 DWORD* vsn /* Pointer to a variable to return the volume serial number */
demayer 0:6bf0743ece18 3876 )
demayer 0:6bf0743ece18 3877 {
demayer 0:6bf0743ece18 3878 FRESULT res;
demayer 0:6bf0743ece18 3879 FATFS_DIR dj;
demayer 0:6bf0743ece18 3880 UINT i, j;
demayer 0:6bf0743ece18 3881 #if _USE_LFN && _LFN_UNICODE
demayer 0:6bf0743ece18 3882 WCHAR w;
demayer 0:6bf0743ece18 3883 #endif
demayer 0:6bf0743ece18 3884
demayer 0:6bf0743ece18 3885
demayer 0:6bf0743ece18 3886 /* Get logical drive number */
demayer 0:6bf0743ece18 3887 res = find_volume(&dj.fs, &path, 0);
demayer 0:6bf0743ece18 3888
demayer 0:6bf0743ece18 3889 /* Get volume label */
demayer 0:6bf0743ece18 3890 if (res == FR_OK && label) {
demayer 0:6bf0743ece18 3891 dj.sclust = 0; /* Open root directory */
demayer 0:6bf0743ece18 3892 res = dir_sdi(&dj, 0);
demayer 0:6bf0743ece18 3893 if (res == FR_OK) {
demayer 0:6bf0743ece18 3894 res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
demayer 0:6bf0743ece18 3895 if (res == FR_OK) { /* A volume label is exist */
demayer 0:6bf0743ece18 3896 #if _USE_LFN && _LFN_UNICODE
demayer 0:6bf0743ece18 3897 i = j = 0;
demayer 0:6bf0743ece18 3898 do {
demayer 0:6bf0743ece18 3899 w = (i < 11) ? dj.dir[i++] : ' ';
demayer 0:6bf0743ece18 3900 if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))
demayer 0:6bf0743ece18 3901 w = w << 8 | dj.dir[i++];
demayer 0:6bf0743ece18 3902 label[j++] = ff_convert(w, 1); /* OEM -> Unicode */
demayer 0:6bf0743ece18 3903 } while (j < 11);
demayer 0:6bf0743ece18 3904 #else
demayer 0:6bf0743ece18 3905 mem_cpy(label, dj.dir, 11);
demayer 0:6bf0743ece18 3906 #endif
demayer 0:6bf0743ece18 3907 j = 11;
demayer 0:6bf0743ece18 3908 do {
demayer 0:6bf0743ece18 3909 label[j] = 0;
demayer 0:6bf0743ece18 3910 if (!j) break;
demayer 0:6bf0743ece18 3911 } while (label[--j] == ' ');
demayer 0:6bf0743ece18 3912 }
demayer 0:6bf0743ece18 3913 if (res == FR_NO_FILE) { /* No label, return nul string */
demayer 0:6bf0743ece18 3914 label[0] = 0;
demayer 0:6bf0743ece18 3915 res = FR_OK;
demayer 0:6bf0743ece18 3916 }
demayer 0:6bf0743ece18 3917 }
demayer 0:6bf0743ece18 3918 }
demayer 0:6bf0743ece18 3919
demayer 0:6bf0743ece18 3920 /* Get volume serial number */
demayer 0:6bf0743ece18 3921 if (res == FR_OK && vsn) {
demayer 0:6bf0743ece18 3922 res = move_window(dj.fs, dj.fs->volbase);
demayer 0:6bf0743ece18 3923 if (res == FR_OK) {
demayer 0:6bf0743ece18 3924 i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;
demayer 0:6bf0743ece18 3925 *vsn = LD_DWORD(&dj.fs->win[i]);
demayer 0:6bf0743ece18 3926 }
demayer 0:6bf0743ece18 3927 }
demayer 0:6bf0743ece18 3928
demayer 0:6bf0743ece18 3929 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3930 }
demayer 0:6bf0743ece18 3931
demayer 0:6bf0743ece18 3932
demayer 0:6bf0743ece18 3933
demayer 0:6bf0743ece18 3934 #if !_FS_READONLY
demayer 0:6bf0743ece18 3935 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3936 /* Set volume label */
demayer 0:6bf0743ece18 3937 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 3938
demayer 0:6bf0743ece18 3939 FRESULT f_setlabel (
demayer 0:6bf0743ece18 3940 const TCHAR* label /* Pointer to the volume label to set */
demayer 0:6bf0743ece18 3941 )
demayer 0:6bf0743ece18 3942 {
demayer 0:6bf0743ece18 3943 FRESULT res;
demayer 0:6bf0743ece18 3944 FATFS_DIR dj;
demayer 0:6bf0743ece18 3945 BYTE vn[11];
demayer 0:6bf0743ece18 3946 UINT i, j, sl;
demayer 0:6bf0743ece18 3947 WCHAR w;
demayer 0:6bf0743ece18 3948 DWORD tm;
demayer 0:6bf0743ece18 3949
demayer 0:6bf0743ece18 3950
demayer 0:6bf0743ece18 3951 /* Get logical drive number */
demayer 0:6bf0743ece18 3952 res = find_volume(&dj.fs, &label, 1);
demayer 0:6bf0743ece18 3953 if (res) LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 3954
demayer 0:6bf0743ece18 3955 /* Create a volume label in directory form */
demayer 0:6bf0743ece18 3956 vn[0] = 0;
demayer 0:6bf0743ece18 3957 for (sl = 0; label[sl]; sl++) ; /* Get name length */
demayer 0:6bf0743ece18 3958 for ( ; sl && label[sl - 1] == ' '; sl--) ; /* Remove trailing spaces */
demayer 0:6bf0743ece18 3959 if (sl) { /* Create volume label in directory form */
demayer 0:6bf0743ece18 3960 i = j = 0;
demayer 0:6bf0743ece18 3961 do {
demayer 0:6bf0743ece18 3962 #if _USE_LFN && _LFN_UNICODE
demayer 0:6bf0743ece18 3963 w = ff_convert(ff_wtoupper(label[i++]), 0);
demayer 0:6bf0743ece18 3964 #else
demayer 0:6bf0743ece18 3965 w = (BYTE)label[i++];
demayer 0:6bf0743ece18 3966 if (IsDBCS1(w))
demayer 0:6bf0743ece18 3967 w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
demayer 0:6bf0743ece18 3968 #if _USE_LFN
demayer 0:6bf0743ece18 3969 w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
demayer 0:6bf0743ece18 3970 #else
demayer 0:6bf0743ece18 3971 if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */
demayer 0:6bf0743ece18 3972 #ifdef _EXCVT
demayer 0:6bf0743ece18 3973 if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
demayer 0:6bf0743ece18 3974 #else
demayer 0:6bf0743ece18 3975 if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */
demayer 0:6bf0743ece18 3976 #endif
demayer 0:6bf0743ece18 3977 #endif
demayer 0:6bf0743ece18 3978 #endif
demayer 0:6bf0743ece18 3979 if (!w || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */
demayer 0:6bf0743ece18 3980 LEAVE_FF(dj.fs, FR_INVALID_NAME);
demayer 0:6bf0743ece18 3981 if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);
demayer 0:6bf0743ece18 3982 vn[j++] = (BYTE)w;
demayer 0:6bf0743ece18 3983 } while (i < sl);
demayer 0:6bf0743ece18 3984 while (j < 11) vn[j++] = ' '; /* Fill remaining name field */
demayer 0:6bf0743ece18 3985 if (vn[0] == DDEM) LEAVE_FF(dj.fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
demayer 0:6bf0743ece18 3986 }
demayer 0:6bf0743ece18 3987
demayer 0:6bf0743ece18 3988 /* Set volume label */
demayer 0:6bf0743ece18 3989 dj.sclust = 0; /* Open root directory */
demayer 0:6bf0743ece18 3990 res = dir_sdi(&dj, 0);
demayer 0:6bf0743ece18 3991 if (res == FR_OK) {
demayer 0:6bf0743ece18 3992 res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
demayer 0:6bf0743ece18 3993 if (res == FR_OK) { /* A volume label is found */
demayer 0:6bf0743ece18 3994 if (vn[0]) {
demayer 0:6bf0743ece18 3995 mem_cpy(dj.dir, vn, 11); /* Change the volume label name */
demayer 0:6bf0743ece18 3996 tm = GET_FATTIME();
demayer 0:6bf0743ece18 3997 ST_DWORD(dj.dir + DIR_WrtTime, tm);
demayer 0:6bf0743ece18 3998 } else {
demayer 0:6bf0743ece18 3999 dj.dir[0] = DDEM; /* Remove the volume label */
demayer 0:6bf0743ece18 4000 }
demayer 0:6bf0743ece18 4001 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 4002 res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 4003 } else { /* No volume label is found or error */
demayer 0:6bf0743ece18 4004 if (res == FR_NO_FILE) {
demayer 0:6bf0743ece18 4005 res = FR_OK;
demayer 0:6bf0743ece18 4006 if (vn[0]) { /* Create volume label as new */
demayer 0:6bf0743ece18 4007 res = dir_alloc(&dj, 1); /* Allocate an entry for volume label */
demayer 0:6bf0743ece18 4008 if (res == FR_OK) {
demayer 0:6bf0743ece18 4009 mem_set(dj.dir, 0, SZ_DIRE); /* Set volume label */
demayer 0:6bf0743ece18 4010 mem_cpy(dj.dir, vn, 11);
demayer 0:6bf0743ece18 4011 dj.dir[DIR_Attr] = AM_VOL;
demayer 0:6bf0743ece18 4012 tm = GET_FATTIME();
demayer 0:6bf0743ece18 4013 ST_DWORD(dj.dir + DIR_WrtTime, tm);
demayer 0:6bf0743ece18 4014 dj.fs->wflag = 1;
demayer 0:6bf0743ece18 4015 res = sync_fs(dj.fs);
demayer 0:6bf0743ece18 4016 }
demayer 0:6bf0743ece18 4017 }
demayer 0:6bf0743ece18 4018 }
demayer 0:6bf0743ece18 4019 }
demayer 0:6bf0743ece18 4020 }
demayer 0:6bf0743ece18 4021
demayer 0:6bf0743ece18 4022 LEAVE_FF(dj.fs, res);
demayer 0:6bf0743ece18 4023 }
demayer 0:6bf0743ece18 4024
demayer 0:6bf0743ece18 4025 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 4026 #endif /* _USE_LABEL */
demayer 0:6bf0743ece18 4027
demayer 0:6bf0743ece18 4028
demayer 0:6bf0743ece18 4029
demayer 0:6bf0743ece18 4030 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4031 /* Forward data to the stream directly (available on only tiny cfg) */
demayer 0:6bf0743ece18 4032 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4033 #if _USE_FORWARD && _FS_TINY
demayer 0:6bf0743ece18 4034
demayer 0:6bf0743ece18 4035 FRESULT f_forward (
demayer 0:6bf0743ece18 4036 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 4037 UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
demayer 0:6bf0743ece18 4038 UINT btf, /* Number of bytes to forward */
demayer 0:6bf0743ece18 4039 UINT* bf /* Pointer to number of bytes forwarded */
demayer 0:6bf0743ece18 4040 )
demayer 0:6bf0743ece18 4041 {
demayer 0:6bf0743ece18 4042 FRESULT res;
demayer 0:6bf0743ece18 4043 DWORD remain, clst, sect;
demayer 0:6bf0743ece18 4044 UINT rcnt;
demayer 0:6bf0743ece18 4045 BYTE csect;
demayer 0:6bf0743ece18 4046
demayer 0:6bf0743ece18 4047
demayer 0:6bf0743ece18 4048 *bf = 0; /* Clear transfer byte counter */
demayer 0:6bf0743ece18 4049
demayer 0:6bf0743ece18 4050 res = validate(fp); /* Check validity of the object */
demayer 0:6bf0743ece18 4051 if (res != FR_OK) LEAVE_FF(fp->fs, res);
demayer 0:6bf0743ece18 4052 if (fp->err) /* Check error */
demayer 0:6bf0743ece18 4053 LEAVE_FF(fp->fs, (FRESULT)fp->err);
demayer 0:6bf0743ece18 4054 if (!(fp->flag & FA_READ)) /* Check access mode */
demayer 0:6bf0743ece18 4055 LEAVE_FF(fp->fs, FR_DENIED);
demayer 0:6bf0743ece18 4056
demayer 0:6bf0743ece18 4057 remain = fp->fsize - fp->fptr;
demayer 0:6bf0743ece18 4058 if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
demayer 0:6bf0743ece18 4059
demayer 0:6bf0743ece18 4060 for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
demayer 0:6bf0743ece18 4061 fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
demayer 0:6bf0743ece18 4062 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
demayer 0:6bf0743ece18 4063 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
demayer 0:6bf0743ece18 4064 if (!csect) { /* On the cluster boundary? */
demayer 0:6bf0743ece18 4065 clst = (fp->fptr == 0) ? /* On the top of the file? */
demayer 0:6bf0743ece18 4066 fp->sclust : get_fat(fp->fs, fp->clust);
demayer 0:6bf0743ece18 4067 if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 4068 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 4069 fp->clust = clst; /* Update current cluster */
demayer 0:6bf0743ece18 4070 }
demayer 0:6bf0743ece18 4071 }
demayer 0:6bf0743ece18 4072 sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
demayer 0:6bf0743ece18 4073 if (!sect) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 4074 sect += csect;
demayer 0:6bf0743ece18 4075 if (move_window(fp->fs, sect) != FR_OK) /* Move sector window */
demayer 0:6bf0743ece18 4076 ABORT(fp->fs, FR_DISK_ERR);
demayer 0:6bf0743ece18 4077 fp->dsect = sect;
demayer 0:6bf0743ece18 4078 rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
demayer 0:6bf0743ece18 4079 if (rcnt > btf) rcnt = btf;
demayer 0:6bf0743ece18 4080 rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
demayer 0:6bf0743ece18 4081 if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
demayer 0:6bf0743ece18 4082 }
demayer 0:6bf0743ece18 4083
demayer 0:6bf0743ece18 4084 LEAVE_FF(fp->fs, FR_OK);
demayer 0:6bf0743ece18 4085 }
demayer 0:6bf0743ece18 4086 #endif /* _USE_FORWARD */
demayer 0:6bf0743ece18 4087
demayer 0:6bf0743ece18 4088
demayer 0:6bf0743ece18 4089
demayer 0:6bf0743ece18 4090 #if _USE_MKFS && !_FS_READONLY
demayer 0:6bf0743ece18 4091 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4092 /* Create file system on the logical drive */
demayer 0:6bf0743ece18 4093 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4094 #define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */
demayer 0:6bf0743ece18 4095 #define N_FATS 1 /* Number of FATs (1 or 2) */
demayer 0:6bf0743ece18 4096
demayer 0:6bf0743ece18 4097
demayer 0:6bf0743ece18 4098 FRESULT f_mkfs (
demayer 0:6bf0743ece18 4099 const TCHAR* path, /* Logical drive number */
demayer 0:6bf0743ece18 4100 BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
demayer 0:6bf0743ece18 4101 UINT au /* Size of allocation unit in unit of byte or sector */
demayer 0:6bf0743ece18 4102 )
demayer 0:6bf0743ece18 4103 {
demayer 0:6bf0743ece18 4104 static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
demayer 0:6bf0743ece18 4105 static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
demayer 0:6bf0743ece18 4106 int vol;
demayer 0:6bf0743ece18 4107 BYTE fmt, md, sys, *tbl, pdrv, part;
demayer 0:6bf0743ece18 4108 DWORD n_clst, vs, n, wsect;
demayer 0:6bf0743ece18 4109 UINT i;
demayer 0:6bf0743ece18 4110 DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
demayer 0:6bf0743ece18 4111 DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
demayer 0:6bf0743ece18 4112 FATFS *fs;
demayer 0:6bf0743ece18 4113 DSTATUS stat;
demayer 0:6bf0743ece18 4114 #if _USE_TRIM
demayer 0:6bf0743ece18 4115 DWORD eb[2];
demayer 0:6bf0743ece18 4116 #endif
demayer 0:6bf0743ece18 4117
demayer 0:6bf0743ece18 4118
demayer 0:6bf0743ece18 4119 /* Check mounted drive and clear work area */
demayer 0:6bf0743ece18 4120 if (sfd > 1) return FR_INVALID_PARAMETER;
demayer 0:6bf0743ece18 4121 vol = get_ldnumber(&path);
demayer 0:6bf0743ece18 4122 if (vol < 0) return FR_INVALID_DRIVE;
demayer 0:6bf0743ece18 4123 fs = FatFs[vol];
demayer 0:6bf0743ece18 4124 if (!fs) return FR_NOT_ENABLED;
demayer 0:6bf0743ece18 4125 fs->fs_type = 0;
demayer 0:6bf0743ece18 4126 pdrv = LD2PD(vol); /* Physical drive */
demayer 0:6bf0743ece18 4127 part = LD2PT(vol); /* Partition (0:auto detect, 1-4:get from partition table)*/
demayer 0:6bf0743ece18 4128
demayer 0:6bf0743ece18 4129 /* Get disk statics */
demayer 0:6bf0743ece18 4130 stat = disk_initialize(pdrv);
demayer 0:6bf0743ece18 4131 if (stat & STA_NOINIT) return FR_NOT_READY;
demayer 0:6bf0743ece18 4132 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
demayer 0:6bf0743ece18 4133 #if _MAX_SS != _MIN_SS /* Get disk sector size */
demayer 0:6bf0743ece18 4134 if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS || SS(fs) < _MIN_SS)
demayer 0:6bf0743ece18 4135 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4136 #endif
demayer 0:6bf0743ece18 4137 #if _FS_HEAPBUF
demayer 0:6bf0743ece18 4138 if (!fs->win) {
demayer 0:6bf0743ece18 4139 fs->win = (BYTE*)ff_memalloc(SS(fs)); /* Allocate buffer to back window if necessary */
demayer 0:6bf0743ece18 4140 if (!fs->win)
demayer 0:6bf0743ece18 4141 return FR_NOT_ENOUGH_CORE;
demayer 0:6bf0743ece18 4142 }
demayer 0:6bf0743ece18 4143 #endif
demayer 0:6bf0743ece18 4144 if (_MULTI_PARTITION && part) {
demayer 0:6bf0743ece18 4145 /* Get partition information from partition table in the MBR */
demayer 0:6bf0743ece18 4146 if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
demayer 0:6bf0743ece18 4147 if (LD_WORD(fs->win + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
demayer 0:6bf0743ece18 4148 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
demayer 0:6bf0743ece18 4149 if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
demayer 0:6bf0743ece18 4150 b_vol = LD_DWORD(tbl + 8); /* Volume start sector */
demayer 0:6bf0743ece18 4151 n_vol = LD_DWORD(tbl + 12); /* Volume size */
demayer 0:6bf0743ece18 4152 } else {
demayer 0:6bf0743ece18 4153 /* Create a partition in this function */
demayer 0:6bf0743ece18 4154 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < ((sfd) ? 64 : 128))
demayer 0:6bf0743ece18 4155 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4156 b_vol = (sfd) ? 0 : 63; /* Volume start sector */
demayer 0:6bf0743ece18 4157 n_vol -= b_vol; /* Volume size */
demayer 0:6bf0743ece18 4158 }
demayer 0:6bf0743ece18 4159
demayer 0:6bf0743ece18 4160 if (au & (au - 1)) au = 0;
demayer 0:6bf0743ece18 4161 if (!au) { /* AU auto selection */
demayer 0:6bf0743ece18 4162 vs = n_vol / (2000 / (SS(fs) / 512));
demayer 0:6bf0743ece18 4163 for (i = 0; vs < vst[i]; i++) ;
demayer 0:6bf0743ece18 4164 au = cst[i];
demayer 0:6bf0743ece18 4165 }
demayer 0:6bf0743ece18 4166 if (au >= _MIN_SS) au /= SS(fs); /* Number of sectors per cluster */
demayer 0:6bf0743ece18 4167 if (!au) au = 1;
demayer 0:6bf0743ece18 4168 if (au > 128) au = 128;
demayer 0:6bf0743ece18 4169
demayer 0:6bf0743ece18 4170 /* Pre-compute number of clusters and FAT sub-type */
demayer 0:6bf0743ece18 4171 n_clst = n_vol / au;
demayer 0:6bf0743ece18 4172 fmt = FS_FAT12;
demayer 0:6bf0743ece18 4173 if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
demayer 0:6bf0743ece18 4174 if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
demayer 0:6bf0743ece18 4175
demayer 0:6bf0743ece18 4176 /* Determine offset and size of FAT structure */
demayer 0:6bf0743ece18 4177 if (fmt == FS_FAT32) {
demayer 0:6bf0743ece18 4178 n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
demayer 0:6bf0743ece18 4179 n_rsv = 32;
demayer 0:6bf0743ece18 4180 n_dir = 0;
demayer 0:6bf0743ece18 4181 } else {
demayer 0:6bf0743ece18 4182 n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
demayer 0:6bf0743ece18 4183 n_fat = (n_fat + SS(fs) - 1) / SS(fs);
demayer 0:6bf0743ece18 4184 n_rsv = 1;
demayer 0:6bf0743ece18 4185 n_dir = (DWORD)N_ROOTDIR * SZ_DIRE / SS(fs);
demayer 0:6bf0743ece18 4186 }
demayer 0:6bf0743ece18 4187 b_fat = b_vol + n_rsv; /* FAT area start sector */
demayer 0:6bf0743ece18 4188 b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
demayer 0:6bf0743ece18 4189 b_data = b_dir + n_dir; /* Data area start sector */
demayer 0:6bf0743ece18 4190 if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
demayer 0:6bf0743ece18 4191
demayer 0:6bf0743ece18 4192 /* Align data start sector to erase block boundary (for flash memory media) */
demayer 0:6bf0743ece18 4193 if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
demayer 0:6bf0743ece18 4194 n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
demayer 0:6bf0743ece18 4195 n = (n - b_data) / N_FATS;
demayer 0:6bf0743ece18 4196 if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
demayer 0:6bf0743ece18 4197 n_rsv += n;
demayer 0:6bf0743ece18 4198 b_fat += n;
demayer 0:6bf0743ece18 4199 } else { /* FAT12/16: Expand FAT size */
demayer 0:6bf0743ece18 4200 n_fat += n;
demayer 0:6bf0743ece18 4201 }
demayer 0:6bf0743ece18 4202
demayer 0:6bf0743ece18 4203 /* Determine number of clusters and final check of validity of the FAT sub-type */
demayer 0:6bf0743ece18 4204 n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
demayer 0:6bf0743ece18 4205 if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
demayer 0:6bf0743ece18 4206 || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
demayer 0:6bf0743ece18 4207 return FR_MKFS_ABORTED;
demayer 0:6bf0743ece18 4208
demayer 0:6bf0743ece18 4209 /* Determine system ID in the partition table */
demayer 0:6bf0743ece18 4210 if (fmt == FS_FAT32) {
demayer 0:6bf0743ece18 4211 sys = 0x0C; /* FAT32X */
demayer 0:6bf0743ece18 4212 } else {
demayer 0:6bf0743ece18 4213 if (fmt == FS_FAT12 && n_vol < 0x10000) {
demayer 0:6bf0743ece18 4214 sys = 0x01; /* FAT12(<65536) */
demayer 0:6bf0743ece18 4215 } else {
demayer 0:6bf0743ece18 4216 sys = (n_vol < 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */
demayer 0:6bf0743ece18 4217 }
demayer 0:6bf0743ece18 4218 }
demayer 0:6bf0743ece18 4219
demayer 0:6bf0743ece18 4220 if (_MULTI_PARTITION && part) {
demayer 0:6bf0743ece18 4221 /* Update system ID in the partition table */
demayer 0:6bf0743ece18 4222 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
demayer 0:6bf0743ece18 4223 tbl[4] = sys;
demayer 0:6bf0743ece18 4224 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to teh MBR */
demayer 0:6bf0743ece18 4225 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4226 md = 0xF8;
demayer 0:6bf0743ece18 4227 } else {
demayer 0:6bf0743ece18 4228 if (sfd) { /* No partition table (SFD) */
demayer 0:6bf0743ece18 4229 md = 0xF0;
demayer 0:6bf0743ece18 4230 } else { /* Create partition table (FDISK) */
demayer 0:6bf0743ece18 4231 mem_set(fs->win, 0, SS(fs));
demayer 0:6bf0743ece18 4232 tbl = fs->win + MBR_Table; /* Create partition table for single partition in the drive */
demayer 0:6bf0743ece18 4233 tbl[1] = 1; /* Partition start head */
demayer 0:6bf0743ece18 4234 tbl[2] = 1; /* Partition start sector */
demayer 0:6bf0743ece18 4235 tbl[3] = 0; /* Partition start cylinder */
demayer 0:6bf0743ece18 4236 tbl[4] = sys; /* System type */
demayer 0:6bf0743ece18 4237 tbl[5] = 254; /* Partition end head */
demayer 0:6bf0743ece18 4238 n = (b_vol + n_vol) / 63 / 255;
demayer 0:6bf0743ece18 4239 tbl[6] = (BYTE)(n >> 2 | 63); /* Partition end sector */
demayer 0:6bf0743ece18 4240 tbl[7] = (BYTE)n; /* End cylinder */
demayer 0:6bf0743ece18 4241 ST_DWORD(tbl + 8, 63); /* Partition start in LBA */
demayer 0:6bf0743ece18 4242 ST_DWORD(tbl + 12, n_vol); /* Partition size in LBA */
demayer 0:6bf0743ece18 4243 ST_WORD(fs->win + BS_55AA, 0xAA55); /* MBR signature */
demayer 0:6bf0743ece18 4244 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR */
demayer 0:6bf0743ece18 4245 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4246 md = 0xF8;
demayer 0:6bf0743ece18 4247 }
demayer 0:6bf0743ece18 4248 }
demayer 0:6bf0743ece18 4249
demayer 0:6bf0743ece18 4250 /* Create BPB in the VBR */
demayer 0:6bf0743ece18 4251 tbl = fs->win; /* Clear sector */
demayer 0:6bf0743ece18 4252 mem_set(tbl, 0, SS(fs));
demayer 0:6bf0743ece18 4253 mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
demayer 0:6bf0743ece18 4254 i = SS(fs); /* Sector size */
demayer 0:6bf0743ece18 4255 ST_WORD(tbl + BPB_BytsPerSec, i);
demayer 0:6bf0743ece18 4256 tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
demayer 0:6bf0743ece18 4257 ST_WORD(tbl + BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
demayer 0:6bf0743ece18 4258 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
demayer 0:6bf0743ece18 4259 i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of root directory entries */
demayer 0:6bf0743ece18 4260 ST_WORD(tbl + BPB_RootEntCnt, i);
demayer 0:6bf0743ece18 4261 if (n_vol < 0x10000) { /* Number of total sectors */
demayer 0:6bf0743ece18 4262 ST_WORD(tbl + BPB_TotSec16, n_vol);
demayer 0:6bf0743ece18 4263 } else {
demayer 0:6bf0743ece18 4264 ST_DWORD(tbl + BPB_TotSec32, n_vol);
demayer 0:6bf0743ece18 4265 }
demayer 0:6bf0743ece18 4266 tbl[BPB_Media] = md; /* Media descriptor */
demayer 0:6bf0743ece18 4267 ST_WORD(tbl + BPB_SecPerTrk, 63); /* Number of sectors per track */
demayer 0:6bf0743ece18 4268 ST_WORD(tbl + BPB_NumHeads, 255); /* Number of heads */
demayer 0:6bf0743ece18 4269 ST_DWORD(tbl + BPB_HiddSec, b_vol); /* Hidden sectors */
demayer 0:6bf0743ece18 4270 n = GET_FATTIME(); /* Use current time as VSN */
demayer 0:6bf0743ece18 4271 if (fmt == FS_FAT32) {
demayer 0:6bf0743ece18 4272 ST_DWORD(tbl + BS_VolID32, n); /* VSN */
demayer 0:6bf0743ece18 4273 ST_DWORD(tbl + BPB_FATSz32, n_fat); /* Number of sectors per FAT */
demayer 0:6bf0743ece18 4274 ST_DWORD(tbl + BPB_RootClus, 2); /* Root directory start cluster (2) */
demayer 0:6bf0743ece18 4275 ST_WORD(tbl + BPB_FSInfo, 1); /* FSINFO record offset (VBR + 1) */
demayer 0:6bf0743ece18 4276 ST_WORD(tbl + BPB_BkBootSec, 6); /* Backup boot record offset (VBR + 6) */
demayer 0:6bf0743ece18 4277 tbl[BS_DrvNum32] = 0x80; /* Drive number */
demayer 0:6bf0743ece18 4278 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
demayer 0:6bf0743ece18 4279 mem_cpy(tbl + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
demayer 0:6bf0743ece18 4280 } else {
demayer 0:6bf0743ece18 4281 ST_DWORD(tbl + BS_VolID, n); /* VSN */
demayer 0:6bf0743ece18 4282 ST_WORD(tbl + BPB_FATSz16, n_fat); /* Number of sectors per FAT */
demayer 0:6bf0743ece18 4283 tbl[BS_DrvNum] = 0x80; /* Drive number */
demayer 0:6bf0743ece18 4284 tbl[BS_BootSig] = 0x29; /* Extended boot signature */
demayer 0:6bf0743ece18 4285 mem_cpy(tbl + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
demayer 0:6bf0743ece18 4286 }
demayer 0:6bf0743ece18 4287 ST_WORD(tbl + BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
demayer 0:6bf0743ece18 4288 if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
demayer 0:6bf0743ece18 4289 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4290 if (fmt == FS_FAT32) /* Write it to the backup VBR if needed (VBR + 6) */
demayer 0:6bf0743ece18 4291 disk_write(pdrv, tbl, b_vol + 6, 1);
demayer 0:6bf0743ece18 4292
demayer 0:6bf0743ece18 4293 /* Initialize FAT area */
demayer 0:6bf0743ece18 4294 wsect = b_fat;
demayer 0:6bf0743ece18 4295 for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
demayer 0:6bf0743ece18 4296 mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
demayer 0:6bf0743ece18 4297 n = md; /* Media descriptor byte */
demayer 0:6bf0743ece18 4298 if (fmt != FS_FAT32) {
demayer 0:6bf0743ece18 4299 n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
demayer 0:6bf0743ece18 4300 ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT12/16) */
demayer 0:6bf0743ece18 4301 } else {
demayer 0:6bf0743ece18 4302 n |= 0xFFFFFF00;
demayer 0:6bf0743ece18 4303 ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT32) */
demayer 0:6bf0743ece18 4304 ST_DWORD(tbl + 4, 0xFFFFFFFF);
demayer 0:6bf0743ece18 4305 ST_DWORD(tbl + 8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */
demayer 0:6bf0743ece18 4306 }
demayer 0:6bf0743ece18 4307 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
demayer 0:6bf0743ece18 4308 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4309 mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
demayer 0:6bf0743ece18 4310 for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
demayer 0:6bf0743ece18 4311 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
demayer 0:6bf0743ece18 4312 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4313 }
demayer 0:6bf0743ece18 4314 }
demayer 0:6bf0743ece18 4315
demayer 0:6bf0743ece18 4316 /* Initialize root directory */
demayer 0:6bf0743ece18 4317 i = (fmt == FS_FAT32) ? au : (UINT)n_dir;
demayer 0:6bf0743ece18 4318 do {
demayer 0:6bf0743ece18 4319 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
demayer 0:6bf0743ece18 4320 return FR_DISK_ERR;
demayer 0:6bf0743ece18 4321 } while (--i);
demayer 0:6bf0743ece18 4322
demayer 0:6bf0743ece18 4323 #if _USE_TRIM /* Erase data area if needed */
demayer 0:6bf0743ece18 4324 {
demayer 0:6bf0743ece18 4325 eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
demayer 0:6bf0743ece18 4326 disk_ioctl(pdrv, CTRL_TRIM, eb);
demayer 0:6bf0743ece18 4327 }
demayer 0:6bf0743ece18 4328 #endif
demayer 0:6bf0743ece18 4329
demayer 0:6bf0743ece18 4330 /* Create FSINFO if needed */
demayer 0:6bf0743ece18 4331 if (fmt == FS_FAT32) {
demayer 0:6bf0743ece18 4332 ST_DWORD(tbl + FSI_LeadSig, 0x41615252);
demayer 0:6bf0743ece18 4333 ST_DWORD(tbl + FSI_StrucSig, 0x61417272);
demayer 0:6bf0743ece18 4334 ST_DWORD(tbl + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
demayer 0:6bf0743ece18 4335 ST_DWORD(tbl + FSI_Nxt_Free, 2); /* Last allocated cluster# */
demayer 0:6bf0743ece18 4336 ST_WORD(tbl + BS_55AA, 0xAA55);
demayer 0:6bf0743ece18 4337 disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR + 1) */
demayer 0:6bf0743ece18 4338 disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR + 7) */
demayer 0:6bf0743ece18 4339 }
demayer 0:6bf0743ece18 4340
demayer 0:6bf0743ece18 4341 return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
demayer 0:6bf0743ece18 4342 }
demayer 0:6bf0743ece18 4343
demayer 0:6bf0743ece18 4344
demayer 0:6bf0743ece18 4345
demayer 0:6bf0743ece18 4346 #if _MULTI_PARTITION
demayer 0:6bf0743ece18 4347 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4348 /* Create partition table on the physical drive */
demayer 0:6bf0743ece18 4349 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4350
demayer 0:6bf0743ece18 4351 FRESULT f_fdisk (
demayer 0:6bf0743ece18 4352 BYTE pdrv, /* Physical drive number */
demayer 0:6bf0743ece18 4353 const DWORD szt[], /* Pointer to the size table for each partitions */
demayer 0:6bf0743ece18 4354 void* work /* Pointer to the working buffer */
demayer 0:6bf0743ece18 4355 )
demayer 0:6bf0743ece18 4356 {
demayer 0:6bf0743ece18 4357 UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
demayer 0:6bf0743ece18 4358 BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
demayer 0:6bf0743ece18 4359 DSTATUS stat;
demayer 0:6bf0743ece18 4360 DWORD sz_disk, sz_part, s_part;
demayer 0:6bf0743ece18 4361
demayer 0:6bf0743ece18 4362
demayer 0:6bf0743ece18 4363 stat = disk_initialize(pdrv);
demayer 0:6bf0743ece18 4364 if (stat & STA_NOINIT) return FR_NOT_READY;
demayer 0:6bf0743ece18 4365 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
demayer 0:6bf0743ece18 4366 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
demayer 0:6bf0743ece18 4367
demayer 0:6bf0743ece18 4368 /* Determine CHS in the table regardless of the drive geometry */
demayer 0:6bf0743ece18 4369 for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
demayer 0:6bf0743ece18 4370 if (n == 256) n--;
demayer 0:6bf0743ece18 4371 e_hd = n - 1;
demayer 0:6bf0743ece18 4372 sz_cyl = 63 * n;
demayer 0:6bf0743ece18 4373 tot_cyl = sz_disk / sz_cyl;
demayer 0:6bf0743ece18 4374
demayer 0:6bf0743ece18 4375 /* Create partition table */
demayer 0:6bf0743ece18 4376 mem_set(buf, 0, _MAX_SS);
demayer 0:6bf0743ece18 4377 p = buf + MBR_Table; b_cyl = 0;
demayer 0:6bf0743ece18 4378 for (i = 0; i < 4; i++, p += SZ_PTE) {
demayer 0:6bf0743ece18 4379 p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
demayer 0:6bf0743ece18 4380 if (!p_cyl) continue;
demayer 0:6bf0743ece18 4381 s_part = (DWORD)sz_cyl * b_cyl;
demayer 0:6bf0743ece18 4382 sz_part = (DWORD)sz_cyl * p_cyl;
demayer 0:6bf0743ece18 4383 if (i == 0) { /* Exclude first track of cylinder 0 */
demayer 0:6bf0743ece18 4384 s_hd = 1;
demayer 0:6bf0743ece18 4385 s_part += 63; sz_part -= 63;
demayer 0:6bf0743ece18 4386 } else {
demayer 0:6bf0743ece18 4387 s_hd = 0;
demayer 0:6bf0743ece18 4388 }
demayer 0:6bf0743ece18 4389 e_cyl = b_cyl + p_cyl - 1;
demayer 0:6bf0743ece18 4390 if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
demayer 0:6bf0743ece18 4391
demayer 0:6bf0743ece18 4392 /* Set partition table */
demayer 0:6bf0743ece18 4393 p[1] = s_hd; /* Start head */
demayer 0:6bf0743ece18 4394 p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
demayer 0:6bf0743ece18 4395 p[3] = (BYTE)b_cyl; /* Start cylinder */
demayer 0:6bf0743ece18 4396 p[4] = 0x06; /* System type (temporary setting) */
demayer 0:6bf0743ece18 4397 p[5] = e_hd; /* End head */
demayer 0:6bf0743ece18 4398 p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
demayer 0:6bf0743ece18 4399 p[7] = (BYTE)e_cyl; /* End cylinder */
demayer 0:6bf0743ece18 4400 ST_DWORD(p + 8, s_part); /* Start sector in LBA */
demayer 0:6bf0743ece18 4401 ST_DWORD(p + 12, sz_part); /* Partition size */
demayer 0:6bf0743ece18 4402
demayer 0:6bf0743ece18 4403 /* Next partition */
demayer 0:6bf0743ece18 4404 b_cyl += p_cyl;
demayer 0:6bf0743ece18 4405 }
demayer 0:6bf0743ece18 4406 ST_WORD(p, 0xAA55);
demayer 0:6bf0743ece18 4407
demayer 0:6bf0743ece18 4408 /* Write it to the MBR */
demayer 0:6bf0743ece18 4409 return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
demayer 0:6bf0743ece18 4410 }
demayer 0:6bf0743ece18 4411
demayer 0:6bf0743ece18 4412
demayer 0:6bf0743ece18 4413 #endif /* _MULTI_PARTITION */
demayer 0:6bf0743ece18 4414 #endif /* _USE_MKFS && !_FS_READONLY */
demayer 0:6bf0743ece18 4415
demayer 0:6bf0743ece18 4416
demayer 0:6bf0743ece18 4417
demayer 0:6bf0743ece18 4418
demayer 0:6bf0743ece18 4419 #if _USE_STRFUNC
demayer 0:6bf0743ece18 4420 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4421 /* Get a string from the file */
demayer 0:6bf0743ece18 4422 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4423
demayer 0:6bf0743ece18 4424 TCHAR* f_gets (
demayer 0:6bf0743ece18 4425 TCHAR* buff, /* Pointer to the string buffer to read */
demayer 0:6bf0743ece18 4426 int len, /* Size of string buffer (characters) */
demayer 0:6bf0743ece18 4427 FIL* fp /* Pointer to the file object */
demayer 0:6bf0743ece18 4428 )
demayer 0:6bf0743ece18 4429 {
demayer 0:6bf0743ece18 4430 int n = 0;
demayer 0:6bf0743ece18 4431 TCHAR c, *p = buff;
demayer 0:6bf0743ece18 4432 BYTE s[2];
demayer 0:6bf0743ece18 4433 UINT rc;
demayer 0:6bf0743ece18 4434
demayer 0:6bf0743ece18 4435
demayer 0:6bf0743ece18 4436 while (n < len - 1) { /* Read characters until buffer gets filled */
demayer 0:6bf0743ece18 4437 #if _USE_LFN && _LFN_UNICODE
demayer 0:6bf0743ece18 4438 #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
demayer 0:6bf0743ece18 4439 f_read(fp, s, 1, &rc);
demayer 0:6bf0743ece18 4440 if (rc != 1) break;
demayer 0:6bf0743ece18 4441 c = s[0];
demayer 0:6bf0743ece18 4442 if (c >= 0x80) {
demayer 0:6bf0743ece18 4443 if (c < 0xC0) continue; /* Skip stray trailer */
demayer 0:6bf0743ece18 4444 if (c < 0xE0) { /* Two-byte sequence */
demayer 0:6bf0743ece18 4445 f_read(fp, s, 1, &rc);
demayer 0:6bf0743ece18 4446 if (rc != 1) break;
demayer 0:6bf0743ece18 4447 c = (c & 0x1F) << 6 | (s[0] & 0x3F);
demayer 0:6bf0743ece18 4448 if (c < 0x80) c = '?';
demayer 0:6bf0743ece18 4449 } else {
demayer 0:6bf0743ece18 4450 if (c < 0xF0) { /* Three-byte sequence */
demayer 0:6bf0743ece18 4451 f_read(fp, s, 2, &rc);
demayer 0:6bf0743ece18 4452 if (rc != 2) break;
demayer 0:6bf0743ece18 4453 c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);
demayer 0:6bf0743ece18 4454 if (c < 0x800) c = '?';
demayer 0:6bf0743ece18 4455 } else { /* Reject four-byte sequence */
demayer 0:6bf0743ece18 4456 c = '?';
demayer 0:6bf0743ece18 4457 }
demayer 0:6bf0743ece18 4458 }
demayer 0:6bf0743ece18 4459 }
demayer 0:6bf0743ece18 4460 #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
demayer 0:6bf0743ece18 4461 f_read(fp, s, 2, &rc);
demayer 0:6bf0743ece18 4462 if (rc != 2) break;
demayer 0:6bf0743ece18 4463 c = s[1] + (s[0] << 8);
demayer 0:6bf0743ece18 4464 #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
demayer 0:6bf0743ece18 4465 f_read(fp, s, 2, &rc);
demayer 0:6bf0743ece18 4466 if (rc != 2) break;
demayer 0:6bf0743ece18 4467 c = s[0] + (s[1] << 8);
demayer 0:6bf0743ece18 4468 #else /* Read a character in ANSI/OEM */
demayer 0:6bf0743ece18 4469 f_read(fp, s, 1, &rc);
demayer 0:6bf0743ece18 4470 if (rc != 1) break;
demayer 0:6bf0743ece18 4471 c = s[0];
demayer 0:6bf0743ece18 4472 if (IsDBCS1(c)) {
demayer 0:6bf0743ece18 4473 f_read(fp, s, 1, &rc);
demayer 0:6bf0743ece18 4474 if (rc != 1) break;
demayer 0:6bf0743ece18 4475 c = (c << 8) + s[0];
demayer 0:6bf0743ece18 4476 }
demayer 0:6bf0743ece18 4477 c = ff_convert(c, 1); /* OEM -> Unicode */
demayer 0:6bf0743ece18 4478 if (!c) c = '?';
demayer 0:6bf0743ece18 4479 #endif
demayer 0:6bf0743ece18 4480 #else /* Read a character without conversion */
demayer 0:6bf0743ece18 4481 f_read(fp, s, 1, &rc);
demayer 0:6bf0743ece18 4482 if (rc != 1) break;
demayer 0:6bf0743ece18 4483 c = s[0];
demayer 0:6bf0743ece18 4484 #endif
demayer 0:6bf0743ece18 4485 if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */
demayer 0:6bf0743ece18 4486 *p++ = c;
demayer 0:6bf0743ece18 4487 n++;
demayer 0:6bf0743ece18 4488 if (c == '\n') break; /* Break on EOL */
demayer 0:6bf0743ece18 4489 }
demayer 0:6bf0743ece18 4490 *p = 0;
demayer 0:6bf0743ece18 4491 return n ? buff : 0; /* When no data read (eof or error), return with error. */
demayer 0:6bf0743ece18 4492 }
demayer 0:6bf0743ece18 4493
demayer 0:6bf0743ece18 4494
demayer 0:6bf0743ece18 4495
demayer 0:6bf0743ece18 4496
demayer 0:6bf0743ece18 4497 #if !_FS_READONLY
demayer 0:6bf0743ece18 4498 #include <stdarg.h>
demayer 0:6bf0743ece18 4499 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4500 /* Put a character to the file */
demayer 0:6bf0743ece18 4501 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4502
demayer 0:6bf0743ece18 4503 typedef struct {
demayer 0:6bf0743ece18 4504 FIL* fp;
demayer 0:6bf0743ece18 4505 int idx, nchr;
demayer 0:6bf0743ece18 4506 BYTE buf[64];
demayer 0:6bf0743ece18 4507 } putbuff;
demayer 0:6bf0743ece18 4508
demayer 0:6bf0743ece18 4509
demayer 0:6bf0743ece18 4510 static
demayer 0:6bf0743ece18 4511 void putc_bfd (
demayer 0:6bf0743ece18 4512 putbuff* pb,
demayer 0:6bf0743ece18 4513 TCHAR c
demayer 0:6bf0743ece18 4514 )
demayer 0:6bf0743ece18 4515 {
demayer 0:6bf0743ece18 4516 UINT bw;
demayer 0:6bf0743ece18 4517 int i;
demayer 0:6bf0743ece18 4518
demayer 0:6bf0743ece18 4519
demayer 0:6bf0743ece18 4520 if (_USE_STRFUNC == 2 && c == '\n') /* LF -> CRLF conversion */
demayer 0:6bf0743ece18 4521 putc_bfd(pb, '\r');
demayer 0:6bf0743ece18 4522
demayer 0:6bf0743ece18 4523 i = pb->idx; /* Buffer write index (-1:error) */
demayer 0:6bf0743ece18 4524 if (i < 0) return;
demayer 0:6bf0743ece18 4525
demayer 0:6bf0743ece18 4526 #if _USE_LFN && _LFN_UNICODE
demayer 0:6bf0743ece18 4527 #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
demayer 0:6bf0743ece18 4528 if (c < 0x80) { /* 7-bit */
demayer 0:6bf0743ece18 4529 pb->buf[i++] = (BYTE)c;
demayer 0:6bf0743ece18 4530 } else {
demayer 0:6bf0743ece18 4531 if (c < 0x800) { /* 11-bit */
demayer 0:6bf0743ece18 4532 pb->buf[i++] = (BYTE)(0xC0 | c >> 6);
demayer 0:6bf0743ece18 4533 } else { /* 16-bit */
demayer 0:6bf0743ece18 4534 pb->buf[i++] = (BYTE)(0xE0 | c >> 12);
demayer 0:6bf0743ece18 4535 pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));
demayer 0:6bf0743ece18 4536 }
demayer 0:6bf0743ece18 4537 pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));
demayer 0:6bf0743ece18 4538 }
demayer 0:6bf0743ece18 4539 #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
demayer 0:6bf0743ece18 4540 pb->buf[i++] = (BYTE)(c >> 8);
demayer 0:6bf0743ece18 4541 pb->buf[i++] = (BYTE)c;
demayer 0:6bf0743ece18 4542 #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
demayer 0:6bf0743ece18 4543 pb->buf[i++] = (BYTE)c;
demayer 0:6bf0743ece18 4544 pb->buf[i++] = (BYTE)(c >> 8);
demayer 0:6bf0743ece18 4545 #else /* Write a character in ANSI/OEM */
demayer 0:6bf0743ece18 4546 c = ff_convert(c, 0); /* Unicode -> OEM */
demayer 0:6bf0743ece18 4547 if (!c) c = '?';
demayer 0:6bf0743ece18 4548 if (c >= 0x100)
demayer 0:6bf0743ece18 4549 pb->buf[i++] = (BYTE)(c >> 8);
demayer 0:6bf0743ece18 4550 pb->buf[i++] = (BYTE)c;
demayer 0:6bf0743ece18 4551 #endif
demayer 0:6bf0743ece18 4552 #else /* Write a character without conversion */
demayer 0:6bf0743ece18 4553 pb->buf[i++] = (BYTE)c;
demayer 0:6bf0743ece18 4554 #endif
demayer 0:6bf0743ece18 4555
demayer 0:6bf0743ece18 4556 if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */
demayer 0:6bf0743ece18 4557 f_write(pb->fp, pb->buf, (UINT)i, &bw);
demayer 0:6bf0743ece18 4558 i = (bw == (UINT)i) ? 0 : -1;
demayer 0:6bf0743ece18 4559 }
demayer 0:6bf0743ece18 4560 pb->idx = i;
demayer 0:6bf0743ece18 4561 pb->nchr++;
demayer 0:6bf0743ece18 4562 }
demayer 0:6bf0743ece18 4563
demayer 0:6bf0743ece18 4564
demayer 0:6bf0743ece18 4565
demayer 0:6bf0743ece18 4566 int f_putc (
demayer 0:6bf0743ece18 4567 TCHAR c, /* A character to be output */
demayer 0:6bf0743ece18 4568 FIL* fp /* Pointer to the file object */
demayer 0:6bf0743ece18 4569 )
demayer 0:6bf0743ece18 4570 {
demayer 0:6bf0743ece18 4571 putbuff pb;
demayer 0:6bf0743ece18 4572 UINT nw;
demayer 0:6bf0743ece18 4573
demayer 0:6bf0743ece18 4574
demayer 0:6bf0743ece18 4575 pb.fp = fp; /* Initialize output buffer */
demayer 0:6bf0743ece18 4576 pb.nchr = pb.idx = 0;
demayer 0:6bf0743ece18 4577
demayer 0:6bf0743ece18 4578 putc_bfd(&pb, c); /* Put a character */
demayer 0:6bf0743ece18 4579
demayer 0:6bf0743ece18 4580 if ( pb.idx >= 0 /* Flush buffered characters to the file */
demayer 0:6bf0743ece18 4581 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
demayer 0:6bf0743ece18 4582 && (UINT)pb.idx == nw) return pb.nchr;
demayer 0:6bf0743ece18 4583 return EOF;
demayer 0:6bf0743ece18 4584 }
demayer 0:6bf0743ece18 4585
demayer 0:6bf0743ece18 4586
demayer 0:6bf0743ece18 4587
demayer 0:6bf0743ece18 4588
demayer 0:6bf0743ece18 4589 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4590 /* Put a string to the file */
demayer 0:6bf0743ece18 4591 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4592
demayer 0:6bf0743ece18 4593 int f_puts (
demayer 0:6bf0743ece18 4594 const TCHAR* str, /* Pointer to the string to be output */
demayer 0:6bf0743ece18 4595 FIL* fp /* Pointer to the file object */
demayer 0:6bf0743ece18 4596 )
demayer 0:6bf0743ece18 4597 {
demayer 0:6bf0743ece18 4598 putbuff pb;
demayer 0:6bf0743ece18 4599 UINT nw;
demayer 0:6bf0743ece18 4600
demayer 0:6bf0743ece18 4601
demayer 0:6bf0743ece18 4602 pb.fp = fp; /* Initialize output buffer */
demayer 0:6bf0743ece18 4603 pb.nchr = pb.idx = 0;
demayer 0:6bf0743ece18 4604
demayer 0:6bf0743ece18 4605 while (*str) /* Put the string */
demayer 0:6bf0743ece18 4606 putc_bfd(&pb, *str++);
demayer 0:6bf0743ece18 4607
demayer 0:6bf0743ece18 4608 if ( pb.idx >= 0 /* Flush buffered characters to the file */
demayer 0:6bf0743ece18 4609 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
demayer 0:6bf0743ece18 4610 && (UINT)pb.idx == nw) return pb.nchr;
demayer 0:6bf0743ece18 4611 return EOF;
demayer 0:6bf0743ece18 4612 }
demayer 0:6bf0743ece18 4613
demayer 0:6bf0743ece18 4614
demayer 0:6bf0743ece18 4615
demayer 0:6bf0743ece18 4616
demayer 0:6bf0743ece18 4617 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4618 /* Put a formatted string to the file */
demayer 0:6bf0743ece18 4619 /*-----------------------------------------------------------------------*/
demayer 0:6bf0743ece18 4620
demayer 0:6bf0743ece18 4621 int f_printf (
demayer 0:6bf0743ece18 4622 FIL* fp, /* Pointer to the file object */
demayer 0:6bf0743ece18 4623 const TCHAR* fmt, /* Pointer to the format string */
demayer 0:6bf0743ece18 4624 ... /* Optional arguments... */
demayer 0:6bf0743ece18 4625 )
demayer 0:6bf0743ece18 4626 {
demayer 0:6bf0743ece18 4627 va_list arp;
demayer 0:6bf0743ece18 4628 BYTE f, r;
demayer 0:6bf0743ece18 4629 UINT nw, i, j, w;
demayer 0:6bf0743ece18 4630 DWORD v;
demayer 0:6bf0743ece18 4631 TCHAR c, d, s[16], *p;
demayer 0:6bf0743ece18 4632 putbuff pb;
demayer 0:6bf0743ece18 4633
demayer 0:6bf0743ece18 4634
demayer 0:6bf0743ece18 4635 pb.fp = fp; /* Initialize output buffer */
demayer 0:6bf0743ece18 4636 pb.nchr = pb.idx = 0;
demayer 0:6bf0743ece18 4637
demayer 0:6bf0743ece18 4638 va_start(arp, fmt);
demayer 0:6bf0743ece18 4639
demayer 0:6bf0743ece18 4640 for (;;) {
demayer 0:6bf0743ece18 4641 c = *fmt++;
demayer 0:6bf0743ece18 4642 if (c == 0) break; /* End of string */
demayer 0:6bf0743ece18 4643 if (c != '%') { /* Non escape character */
demayer 0:6bf0743ece18 4644 putc_bfd(&pb, c);
demayer 0:6bf0743ece18 4645 continue;
demayer 0:6bf0743ece18 4646 }
demayer 0:6bf0743ece18 4647 w = f = 0;
demayer 0:6bf0743ece18 4648 c = *fmt++;
demayer 0:6bf0743ece18 4649 if (c == '0') { /* Flag: '0' padding */
demayer 0:6bf0743ece18 4650 f = 1; c = *fmt++;
demayer 0:6bf0743ece18 4651 } else {
demayer 0:6bf0743ece18 4652 if (c == '-') { /* Flag: left justified */
demayer 0:6bf0743ece18 4653 f = 2; c = *fmt++;
demayer 0:6bf0743ece18 4654 }
demayer 0:6bf0743ece18 4655 }
demayer 0:6bf0743ece18 4656 while (IsDigit(c)) { /* Precision */
demayer 0:6bf0743ece18 4657 w = w * 10 + c - '0';
demayer 0:6bf0743ece18 4658 c = *fmt++;
demayer 0:6bf0743ece18 4659 }
demayer 0:6bf0743ece18 4660 if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
demayer 0:6bf0743ece18 4661 f |= 4; c = *fmt++;
demayer 0:6bf0743ece18 4662 }
demayer 0:6bf0743ece18 4663 if (!c) break;
demayer 0:6bf0743ece18 4664 d = c;
demayer 0:6bf0743ece18 4665 if (IsLower(d)) d -= 0x20;
demayer 0:6bf0743ece18 4666 switch (d) { /* Type is... */
demayer 0:6bf0743ece18 4667 case 'S' : /* String */
demayer 0:6bf0743ece18 4668 p = va_arg(arp, TCHAR*);
demayer 0:6bf0743ece18 4669 for (j = 0; p[j]; j++) ;
demayer 0:6bf0743ece18 4670 if (!(f & 2)) {
demayer 0:6bf0743ece18 4671 while (j++ < w) putc_bfd(&pb, ' ');
demayer 0:6bf0743ece18 4672 }
demayer 0:6bf0743ece18 4673 while (*p) putc_bfd(&pb, *p++);
demayer 0:6bf0743ece18 4674 while (j++ < w) putc_bfd(&pb, ' ');
demayer 0:6bf0743ece18 4675 continue;
demayer 0:6bf0743ece18 4676 case 'C' : /* Character */
demayer 0:6bf0743ece18 4677 putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
demayer 0:6bf0743ece18 4678 case 'B' : /* Binary */
demayer 0:6bf0743ece18 4679 r = 2; break;
demayer 0:6bf0743ece18 4680 case 'O' : /* Octal */
demayer 0:6bf0743ece18 4681 r = 8; break;
demayer 0:6bf0743ece18 4682 case 'D' : /* Signed decimal */
demayer 0:6bf0743ece18 4683 case 'U' : /* Unsigned decimal */
demayer 0:6bf0743ece18 4684 r = 10; break;
demayer 0:6bf0743ece18 4685 case 'X' : /* Hexdecimal */
demayer 0:6bf0743ece18 4686 r = 16; break;
demayer 0:6bf0743ece18 4687 default: /* Unknown type (pass-through) */
demayer 0:6bf0743ece18 4688 putc_bfd(&pb, c); continue;
demayer 0:6bf0743ece18 4689 }
demayer 0:6bf0743ece18 4690
demayer 0:6bf0743ece18 4691 /* Get an argument and put it in numeral */
demayer 0:6bf0743ece18 4692 v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
demayer 0:6bf0743ece18 4693 if (d == 'D' && (v & 0x80000000)) {
demayer 0:6bf0743ece18 4694 v = 0 - v;
demayer 0:6bf0743ece18 4695 f |= 8;
demayer 0:6bf0743ece18 4696 }
demayer 0:6bf0743ece18 4697 i = 0;
demayer 0:6bf0743ece18 4698 do {
demayer 0:6bf0743ece18 4699 d = (TCHAR)(v % r); v /= r;
demayer 0:6bf0743ece18 4700 if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
demayer 0:6bf0743ece18 4701 s[i++] = d + '0';
demayer 0:6bf0743ece18 4702 } while (v && i < sizeof s / sizeof s[0]);
demayer 0:6bf0743ece18 4703 if (f & 8) s[i++] = '-';
demayer 0:6bf0743ece18 4704 j = i; d = (f & 1) ? '0' : ' ';
demayer 0:6bf0743ece18 4705 while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
demayer 0:6bf0743ece18 4706 do putc_bfd(&pb, s[--i]); while (i);
demayer 0:6bf0743ece18 4707 while (j++ < w) putc_bfd(&pb, d);
demayer 0:6bf0743ece18 4708 }
demayer 0:6bf0743ece18 4709
demayer 0:6bf0743ece18 4710 va_end(arp);
demayer 0:6bf0743ece18 4711
demayer 0:6bf0743ece18 4712 if ( pb.idx >= 0 /* Flush buffered characters to the file */
demayer 0:6bf0743ece18 4713 && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
demayer 0:6bf0743ece18 4714 && (UINT)pb.idx == nw) return pb.nchr;
demayer 0:6bf0743ece18 4715 return EOF;
demayer 0:6bf0743ece18 4716 }
demayer 0:6bf0743ece18 4717
demayer 0:6bf0743ece18 4718 #endif /* !_FS_READONLY */
demayer 0:6bf0743ece18 4719 #endif /* _USE_STRFUNC */