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