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1 /*----------------------------------------------------------------------------/ |
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2 / FatFs - FAT file system module R0.09 (C)ChaN, 2011 |
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3 /-----------------------------------------------------------------------------/ |
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4 / FatFs module is a generic FAT file system module for small embedded systems. |
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5 / This is a free software that opened for education, research and commercial |
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6 / developments under license policy of following terms. |
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7 / |
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8 / Copyright (C) 2011, ChaN, all right reserved. |
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9 / |
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10 / * The 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 / Feb 26,'06 R0.00 Prototype. |
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17 / |
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18 / Apr 29,'06 R0.01 First stable version. |
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19 / |
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20 / Jun 01,'06 R0.02 Added FAT12 support. |
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21 / Removed unbuffered mode. |
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22 / Fixed a problem on small (<32M) partition. |
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23 / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). |
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24 / |
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25 / Sep 22,'06 R0.03 Added f_rename(). |
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26 / Changed option _FS_MINIMUM to _FS_MINIMIZE. |
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27 / Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast. |
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28 / Fixed f_mkdir() creates incorrect directory on FAT32. |
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29 / |
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30 / Feb 04,'07 R0.04 Supported multiple drive system. |
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31 / Changed some interfaces for multiple drive system. |
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32 / Changed f_mountdrv() to f_mount(). |
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33 / Added f_mkfs(). |
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34 / Apr 01,'07 R0.04a Supported multiple partitions on a physical drive. |
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35 / Added a capability of extending file size to f_lseek(). |
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36 / Added minimization level 3. |
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37 / Fixed an endian sensitive code in f_mkfs(). |
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38 / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. |
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39 / Added FSInfo support. |
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40 / Fixed DBCS name can result FR_INVALID_NAME. |
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41 / Fixed short seek (<= csize) collapses the file object. |
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42 / |
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43 / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). |
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44 / Fixed f_mkfs() on FAT32 creates incorrect FSInfo. |
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45 / Fixed f_mkdir() on FAT32 creates incorrect directory. |
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46 / Feb 03,'08 R0.05a Added f_truncate() and f_utime(). |
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47 / Fixed off by one error at FAT sub-type determination. |
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48 / Fixed btr in f_read() can be mistruncated. |
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49 / Fixed cached sector is not flushed when create and close without write. |
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50 / |
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51 / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). |
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52 / Improved performance of f_lseek() on moving to the same or following cluster. |
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53 / |
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54 / Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY) |
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55 / Added long file name feature. |
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56 / Added multiple code page feature. |
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57 / Added re-entrancy for multitask operation. |
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58 / Added auto cluster size selection to f_mkfs(). |
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59 / Added rewind option to f_readdir(). |
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60 / Changed result code of critical errors. |
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61 / Renamed string functions to avoid name collision. |
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62 / Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg. |
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63 / Added multiple sector size feature. |
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64 / Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error. |
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65 / Fixed wrong cache control in f_lseek(). |
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66 / Added relative path feature. |
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67 / Added f_chdir() and f_chdrive(). |
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68 / Added proper case conversion to extended char. |
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69 / Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h. |
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70 / Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH. |
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71 / Fixed name matching error on the 13 char boundary. |
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72 / Added a configuration option, _LFN_UNICODE. |
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73 / Changed f_readdir() to return the SFN with always upper case on non-LFN cfg. |
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74 / |
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75 / May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3) |
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76 / Added file lock feature. (_FS_SHARE) |
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77 / Added fast seek feature. (_USE_FASTSEEK) |
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78 / Changed some types on the API, XCHAR->TCHAR. |
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79 / Changed fname member in the FILINFO structure on Unicode cfg. |
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80 / String functions support UTF-8 encoding files on Unicode cfg. |
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81 / Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2) |
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82 / Added sector erase feature. (_USE_ERASE) |
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83 / Moved file lock semaphore table from fs object to the bss. |
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84 / Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'. |
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85 / Fixed f_mkfs() creates wrong FAT32 volume. |
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86 / Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write(). |
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87 / f_lseek() reports required table size on creating CLMP. |
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88 / Extended format syntax of f_printf function. |
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89 / Ignores duplicated directory separators in given path names. |
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90 / |
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91 / Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature. |
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92 / Added f_fdisk(). (_MULTI_PARTITION = 2) |
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93 /---------------------------------------------------------------------------*/ |
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94 |
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95 #include "ff.h" /* FatFs configurations and declarations */ |
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96 #include "diskio.h" /* Declarations of low level disk I/O functions */ |
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97 |
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98 |
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99 /*-------------------------------------------------------------------------- |
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100 |
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101 Module Private Definitions |
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102 |
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103 ---------------------------------------------------------------------------*/ |
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104 |
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105 #if _FATFS != 6502 /* Revision ID */ |
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106 #error Wrong include file (ff.h). |
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107 #endif |
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108 |
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109 |
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110 /* Definitions on sector size */ |
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111 #if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096 |
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112 #error Wrong sector size. |
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113 #endif |
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114 #if _MAX_SS != 512 |
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115 #define SS(fs) ((fs)->ssize) /* Variable sector size */ |
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116 #else |
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117 #define SS(fs) 512U /* Fixed sector size */ |
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118 #endif |
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119 |
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120 |
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121 /* Reentrancy related */ |
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122 #if _FS_REENTRANT |
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123 #if _USE_LFN == 1 |
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124 #error Static LFN work area must not be used in re-entrant configuration. |
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125 #endif |
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126 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; } |
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127 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; } |
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128 #else |
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129 #define ENTER_FF(fs) |
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130 #define LEAVE_FF(fs, res) return res |
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131 #endif |
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132 |
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133 #define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); } |
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134 |
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135 |
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136 /* File shareing feature */ |
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137 #if _FS_SHARE |
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138 #if _FS_READONLY |
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139 #error _FS_SHARE must be 0 on read-only cfg. |
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140 #endif |
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141 typedef struct { |
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142 FATFS *fs; /* File ID 1, volume (NULL:blank entry) */ |
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143 DWORD clu; /* File ID 2, directory */ |
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144 WORD idx; /* File ID 3, directory index */ |
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145 WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */ |
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146 } FILESEM; |
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147 #endif |
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148 |
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149 |
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150 /* Misc definitions */ |
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151 #define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO)) |
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152 #define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);} |
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153 |
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154 |
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155 /* DBCS code ranges and SBCS extend char conversion table */ |
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156 |
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157 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */ |
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158 #define _DF1S 0x81 /* DBC 1st byte range 1 start */ |
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159 #define _DF1E 0x9F /* DBC 1st byte range 1 end */ |
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160 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */ |
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161 #define _DF2E 0xFC /* DBC 1st byte range 2 end */ |
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162 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */ |
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163 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */ |
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164 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */ |
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165 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */ |
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166 |
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167 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ |
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168 #define _DF1S 0x81 |
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169 #define _DF1E 0xFE |
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170 #define _DS1S 0x40 |
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171 #define _DS1E 0x7E |
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172 #define _DS2S 0x80 |
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173 #define _DS2E 0xFE |
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174 |
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175 #elif _CODE_PAGE == 949 /* Korean */ |
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176 #define _DF1S 0x81 |
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177 #define _DF1E 0xFE |
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178 #define _DS1S 0x41 |
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179 #define _DS1E 0x5A |
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180 #define _DS2S 0x61 |
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181 #define _DS2E 0x7A |
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182 #define _DS3S 0x81 |
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183 #define _DS3E 0xFE |
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184 |
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185 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ |
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186 #define _DF1S 0x81 |
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187 #define _DF1E 0xFE |
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188 #define _DS1S 0x40 |
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189 #define _DS1E 0x7E |
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190 #define _DS2S 0xA1 |
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191 #define _DS2E 0xFE |
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192 |
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193 #elif _CODE_PAGE == 437 /* U.S. (OEM) */ |
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194 #define _DF1S 0 |
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195 #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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196 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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197 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ |
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198 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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199 |
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200 #elif _CODE_PAGE == 720 /* Arabic (OEM) */ |
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201 #define _DF1S 0 |
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202 #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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203 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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204 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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205 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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206 |
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207 #elif _CODE_PAGE == 737 /* Greek (OEM) */ |
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208 #define _DF1S 0 |
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209 #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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210 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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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, \ |
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212 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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213 |
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214 #elif _CODE_PAGE == 775 /* Baltic (OEM) */ |
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215 #define _DF1S 0 |
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216 #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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217 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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218 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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219 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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220 |
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221 #elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */ |
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222 #define _DF1S 0 |
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223 #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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224 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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225 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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226 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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227 |
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228 #elif _CODE_PAGE == 852 /* Latin 2 (OEM) */ |
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229 #define _DF1S 0 |
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230 #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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231 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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232 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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233 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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234 |
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235 #elif _CODE_PAGE == 855 /* Cyrillic (OEM) */ |
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236 #define _DF1S 0 |
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237 #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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238 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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239 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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240 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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241 |
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242 #elif _CODE_PAGE == 857 /* Turkish (OEM) */ |
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243 #define _DF1S 0 |
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244 #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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245 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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246 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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247 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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248 |
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249 #elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */ |
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250 #define _DF1S 0 |
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251 #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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252 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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253 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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254 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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255 |
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256 #elif _CODE_PAGE == 862 /* Hebrew (OEM) */ |
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257 #define _DF1S 0 |
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258 #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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259 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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260 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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261 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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262 |
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263 #elif _CODE_PAGE == 866 /* Russian (OEM) */ |
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264 #define _DF1S 0 |
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265 #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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266 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, \ |
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267 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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268 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} |
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269 |
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270 #elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */ |
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271 #define _DF1S 0 |
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272 #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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273 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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274 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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275 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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276 |
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277 #elif _CODE_PAGE == 1250 /* Central Europe (Windows) */ |
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278 #define _DF1S 0 |
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279 #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, \ |
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280 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, \ |
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281 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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282 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} |
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283 |
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284 #elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */ |
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285 #define _DF1S 0 |
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286 #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, \ |
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287 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, \ |
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288 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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289 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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290 |
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291 #elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */ |
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292 #define _DF1S 0 |
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293 #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, \ |
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294 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, \ |
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295 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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296 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} |
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297 |
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298 #elif _CODE_PAGE == 1253 /* Greek (Windows) */ |
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299 #define _DF1S 0 |
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300 #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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301 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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302 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, \ |
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303 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} |
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304 |
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305 #elif _CODE_PAGE == 1254 /* Turkish (Windows) */ |
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306 #define _DF1S 0 |
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307 #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, \ |
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308 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, \ |
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309 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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310 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} |
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311 |
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312 #elif _CODE_PAGE == 1255 /* Hebrew (Windows) */ |
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313 #define _DF1S 0 |
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314 #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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315 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, \ |
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316 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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317 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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318 |
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|
319 #elif _CODE_PAGE == 1256 /* Arabic (Windows) */ |
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320 #define _DF1S 0 |
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321 #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, \ |
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322 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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|
323 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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|
324 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} |
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325 |
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326 #elif _CODE_PAGE == 1257 /* Baltic (Windows) */ |
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327 #define _DF1S 0 |
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328 #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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329 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, \ |
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|
330 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, \ |
|
|
331 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} |
|
|
332 |
|
|
333 #elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */ |
|
|
334 #define _DF1S 0 |
|
|
335 #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, \ |
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|
336 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, \ |
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|
337 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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|
338 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} |
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339 |
|
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340 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */ |
|
|
341 #if _USE_LFN |
|
|
342 #error Cannot use LFN feature without valid code page. |
|
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343 #endif |
|
|
344 #define _DF1S 0 |
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345 |
|
|
346 #else |
|
|
347 #error Unknown code page |
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348 |
|
|
349 #endif |
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350 |
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351 |
|
|
352 /* Character code support macros */ |
|
|
353 #define IsUpper(c) (((c)>='A')&&((c)<='Z')) |
|
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354 #define IsLower(c) (((c)>='a')&&((c)<='z')) |
|
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355 #define IsDigit(c) (((c)>='0')&&((c)<='9')) |
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356 |
|
|
357 #if _DF1S /* Code page is DBCS */ |
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358 |
|
|
359 #ifdef _DF2S /* Two 1st byte areas */ |
|
|
360 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E)) |
|
|
361 #else /* One 1st byte area */ |
|
|
362 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) |
|
|
363 #endif |
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|
364 |
|
|
365 #ifdef _DS3S /* Three 2nd byte areas */ |
|
|
366 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E)) |
|
|
367 #else /* Two 2nd byte areas */ |
|
|
368 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E)) |
|
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369 #endif |
|
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370 |
|
|
371 #else /* Code page is SBCS */ |
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372 |
|
|
373 #define IsDBCS1(c) 0 |
|
|
374 #define IsDBCS2(c) 0 |
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|
375 |
|
|
376 #endif /* _DF1S */ |
|
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377 |
|
|
378 |
|
|
379 /* Name status flags */ |
|
|
380 #define NS 11 /* Index of name status byte in fn[] */ |
|
|
381 #define NS_LOSS 0x01 /* Out of 8.3 format */ |
|
|
382 #define NS_LFN 0x02 /* Force to create LFN entry */ |
|
|
383 #define NS_LAST 0x04 /* Last segment */ |
|
|
384 #define NS_BODY 0x08 /* Lower case flag (body) */ |
|
|
385 #define NS_EXT 0x10 /* Lower case flag (ext) */ |
|
|
386 #define NS_DOT 0x20 /* Dot entry */ |
|
|
387 |
|
|
388 |
|
|
389 /* FAT sub-type boundaries */ |
|
|
390 /* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */ |
|
|
391 #define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */ |
|
|
392 #define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */ |
|
|
393 |
|
|
394 |
|
|
395 /* FatFs refers the members in the FAT structures as byte array instead of |
|
|
396 / structure member because the structure is not binary compatible between |
|
|
397 / different platforms */ |
|
|
398 |
|
|
399 #define BS_jmpBoot 0 /* Jump instruction (3) */ |
|
|
400 #define BS_OEMName 3 /* OEM name (8) */ |
|
|
401 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */ |
|
|
402 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */ |
|
|
403 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */ |
|
|
404 #define BPB_NumFATs 16 /* Number of FAT copies (1) */ |
|
|
405 #define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */ |
|
|
406 #define BPB_TotSec16 19 /* Volume size [sector] (2) */ |
|
|
407 #define BPB_Media 21 /* Media descriptor (1) */ |
|
|
408 #define BPB_FATSz16 22 /* FAT size [sector] (2) */ |
|
|
409 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */ |
|
|
410 #define BPB_NumHeads 26 /* Number of heads (2) */ |
|
|
411 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */ |
|
|
412 #define BPB_TotSec32 32 /* Volume size [sector] (4) */ |
|
|
413 #define BS_DrvNum 36 /* Physical drive number (2) */ |
|
|
414 #define BS_BootSig 38 /* Extended boot signature (1) */ |
|
|
415 #define BS_VolID 39 /* Volume serial number (4) */ |
|
|
416 #define BS_VolLab 43 /* Volume label (8) */ |
|
|
417 #define BS_FilSysType 54 /* File system type (1) */ |
|
|
418 #define BPB_FATSz32 36 /* FAT size [sector] (4) */ |
|
|
419 #define BPB_ExtFlags 40 /* Extended flags (2) */ |
|
|
420 #define BPB_FSVer 42 /* File system version (2) */ |
|
|
421 #define BPB_RootClus 44 /* Root dir first cluster (4) */ |
|
|
422 #define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */ |
|
|
423 #define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */ |
|
|
424 #define BS_DrvNum32 64 /* Physical drive number (2) */ |
|
|
425 #define BS_BootSig32 66 /* Extended boot signature (1) */ |
|
|
426 #define BS_VolID32 67 /* Volume serial number (4) */ |
|
|
427 #define BS_VolLab32 71 /* Volume label (8) */ |
|
|
428 #define BS_FilSysType32 82 /* File system type (1) */ |
|
|
429 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */ |
|
|
430 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */ |
|
|
431 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */ |
|
|
432 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */ |
|
|
433 #define MBR_Table 446 /* MBR: Partition table offset (2) */ |
|
|
434 #define SZ_PTE 16 /* MBR: Size of a partition table entry */ |
|
|
435 #define BS_55AA 510 /* Boot sector signature (2) */ |
|
|
436 |
|
|
437 #define DIR_Name 0 /* Short file name (11) */ |
|
|
438 #define DIR_Attr 11 /* Attribute (1) */ |
|
|
439 #define DIR_NTres 12 /* NT flag (1) */ |
|
|
440 #define DIR_CrtTime 14 /* Created time (2) */ |
|
|
441 #define DIR_CrtDate 16 /* Created date (2) */ |
|
|
442 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */ |
|
|
443 #define DIR_WrtTime 22 /* Modified time (2) */ |
|
|
444 #define DIR_WrtDate 24 /* Modified date (2) */ |
|
|
445 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */ |
|
|
446 #define DIR_FileSize 28 /* File size (4) */ |
|
|
447 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */ |
|
|
448 #define LDIR_Attr 11 /* LFN attribute (1) */ |
|
|
449 #define LDIR_Type 12 /* LFN type (1) */ |
|
|
450 #define LDIR_Chksum 13 /* Sum of corresponding SFN entry */ |
|
|
451 #define LDIR_FstClusLO 26 /* Filled by zero (0) */ |
|
|
452 #define SZ_DIR 32 /* Size of a directory entry */ |
|
|
453 #define LLE 0x40 /* Last long entry flag in LDIR_Ord */ |
|
|
454 #define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */ |
|
|
455 #define NDDE 0x05 /* Replacement of a character collides with DDE */ |
|
|
456 |
|
|
457 |
|
|
458 /*------------------------------------------------------------*/ |
|
|
459 /* Module private work area */ |
|
|
460 /*------------------------------------------------------------*/ |
|
|
461 /* Note that uninitialized variables with static duration are |
|
|
462 / zeroed/nulled at start-up. If not, the compiler or start-up |
|
|
463 / routine is out of ANSI-C standard. |
|
|
464 */ |
|
|
465 |
|
|
466 #if _VOLUMES |
|
|
467 static |
|
|
468 FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */ |
|
|
469 #else |
|
|
470 #error Number of volumes must not be 0. |
|
|
471 #endif |
|
|
472 |
|
|
473 static |
|
|
474 WORD Fsid; /* File system mount ID */ |
|
|
475 |
|
|
476 #if _FS_RPATH |
|
|
477 static |
|
|
478 BYTE CurrVol; /* Current drive */ |
|
|
479 #endif |
|
|
480 |
|
|
481 #if _FS_SHARE |
|
|
482 static |
|
|
483 FILESEM Files[_FS_SHARE]; /* File lock semaphores */ |
|
|
484 #endif |
|
|
485 |
|
|
486 #if _USE_LFN == 0 /* No LFN feature */ |
|
|
487 #define DEF_NAMEBUF BYTE sfn[12] |
|
|
488 #define INIT_BUF(dobj) (dobj).fn = sfn |
|
|
489 #define FREE_BUF() |
|
|
490 |
|
|
491 #elif _USE_LFN == 1 /* LFN feature with static working buffer */ |
|
|
492 static WCHAR LfnBuf[_MAX_LFN+1]; |
|
|
493 #define DEF_NAMEBUF BYTE sfn[12] |
|
|
494 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; } |
|
|
495 #define FREE_BUF() |
|
|
496 |
|
|
497 #elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */ |
|
|
498 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1] |
|
|
499 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; } |
|
|
500 #define FREE_BUF() |
|
|
501 |
|
|
502 #elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */ |
|
|
503 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn |
|
|
504 #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \ |
|
|
505 if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \ |
|
|
506 (dobj).lfn = lfn; (dobj).fn = sfn; } |
|
|
507 #define FREE_BUF() ff_memfree(lfn) |
|
|
508 |
|
|
509 #else |
|
|
510 #error Wrong LFN configuration. |
|
|
511 #endif |
|
|
512 |
|
|
513 |
|
|
514 |
|
|
515 |
|
|
516 /*-------------------------------------------------------------------------- |
|
|
517 |
|
|
518 Module Private Functions |
|
|
519 |
|
|
520 ---------------------------------------------------------------------------*/ |
|
|
521 |
|
|
522 |
|
|
523 /*-----------------------------------------------------------------------*/ |
|
|
524 /* String functions */ |
|
|
525 /*-----------------------------------------------------------------------*/ |
|
|
526 |
|
|
527 /* Copy memory to memory */ |
|
|
528 static |
|
|
529 void mem_cpy (void* dst, const void* src, UINT cnt) { |
|
|
530 BYTE *d = (BYTE*)dst; |
|
|
531 const BYTE *s = (const BYTE*)src; |
|
|
532 |
|
|
533 #if _WORD_ACCESS == 1 |
|
|
534 while (cnt >= sizeof(int)) { |
|
|
535 *(int*)d = *(int*)s; |
|
|
536 d += sizeof(int); s += sizeof(int); |
|
|
537 cnt -= sizeof(int); |
|
|
538 } |
|
|
539 #endif |
|
|
540 while (cnt--) |
|
|
541 *d++ = *s++; |
|
|
542 } |
|
|
543 |
|
|
544 /* Fill memory */ |
|
|
545 static |
|
|
546 void mem_set (void* dst, int val, UINT cnt) { |
|
|
547 BYTE *d = (BYTE*)dst; |
|
|
548 |
|
|
549 while (cnt--) |
|
|
550 *d++ = (BYTE)val; |
|
|
551 } |
|
|
552 |
|
|
553 /* Compare memory to memory */ |
|
|
554 static |
|
|
555 int mem_cmp (const void* dst, const void* src, UINT cnt) { |
|
|
556 const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; |
|
|
557 int r = 0; |
|
|
558 |
|
|
559 while (cnt-- && (r = *d++ - *s++) == 0) ; |
|
|
560 return r; |
|
|
561 } |
|
|
562 |
|
|
563 /* Check if chr is contained in the string */ |
|
|
564 static |
|
|
565 int chk_chr (const char* str, int chr) { |
|
|
566 while (*str && *str != chr) str++; |
|
|
567 return *str; |
|
|
568 } |
|
|
569 |
|
|
570 |
|
|
571 |
|
|
572 /*-----------------------------------------------------------------------*/ |
|
|
573 /* Request/Release grant to access the volume */ |
|
|
574 /*-----------------------------------------------------------------------*/ |
|
|
575 #if _FS_REENTRANT |
|
|
576 |
|
|
577 static |
|
|
578 int lock_fs ( |
|
|
579 FATFS *fs /* File system object */ |
|
|
580 ) |
|
|
581 { |
|
|
582 return ff_req_grant(fs->sobj); |
|
|
583 } |
|
|
584 |
|
|
585 |
|
|
586 static |
|
|
587 void unlock_fs ( |
|
|
588 FATFS *fs, /* File system object */ |
|
|
589 FRESULT res /* Result code to be returned */ |
|
|
590 ) |
|
|
591 { |
|
|
592 if (res != FR_NOT_ENABLED && |
|
|
593 res != FR_INVALID_DRIVE && |
|
|
594 res != FR_INVALID_OBJECT && |
|
|
595 res != FR_TIMEOUT) { |
|
|
596 ff_rel_grant(fs->sobj); |
|
|
597 } |
|
|
598 } |
|
|
599 #endif |
|
|
600 |
|
|
601 |
|
|
602 |
|
|
603 /*-----------------------------------------------------------------------*/ |
|
|
604 /* File shareing control functions */ |
|
|
605 /*-----------------------------------------------------------------------*/ |
|
|
606 #if _FS_SHARE |
|
|
607 |
|
|
608 static |
|
|
609 FRESULT chk_lock ( /* Check if the file can be accessed */ |
|
|
610 DIR* dj, /* Directory object pointing the file to be checked */ |
|
|
611 int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ |
|
|
612 ) |
|
|
613 { |
|
|
614 UINT i, be; |
|
|
615 |
|
|
616 /* Search file semaphore table */ |
|
|
617 for (i = be = 0; i < _FS_SHARE; i++) { |
|
|
618 if (Files[i].fs) { /* Existing entry */ |
|
|
619 if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */ |
|
|
620 Files[i].clu == dj->sclust && |
|
|
621 Files[i].idx == dj->index) break; |
|
|
622 } else { /* Blank entry */ |
|
|
623 be++; |
|
|
624 } |
|
|
625 } |
|
|
626 if (i == _FS_SHARE) /* The file is not opened */ |
|
|
627 return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */ |
|
|
628 |
|
|
629 /* The file has been opened. Reject any open against writing file and all write mode open */ |
|
|
630 return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK; |
|
|
631 } |
|
|
632 |
|
|
633 |
|
|
634 static |
|
|
635 int enq_lock (void) /* Check if an entry is available for a new file */ |
|
|
636 { |
|
|
637 UINT i; |
|
|
638 |
|
|
639 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; |
|
|
640 return (i == _FS_SHARE) ? 0 : 1; |
|
|
641 } |
|
|
642 |
|
|
643 |
|
|
644 static |
|
|
645 UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */ |
|
|
646 DIR* dj, /* Directory object pointing the file to register or increment */ |
|
|
647 int acc /* Desired access mode (0:Read, !0:Write) */ |
|
|
648 ) |
|
|
649 { |
|
|
650 UINT i; |
|
|
651 |
|
|
652 |
|
|
653 for (i = 0; i < _FS_SHARE; i++) { /* Find the file */ |
|
|
654 if (Files[i].fs == dj->fs && |
|
|
655 Files[i].clu == dj->sclust && |
|
|
656 Files[i].idx == dj->index) break; |
|
|
657 } |
|
|
658 |
|
|
659 if (i == _FS_SHARE) { /* Not opened. Register it as new. */ |
|
|
660 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ; |
|
|
661 if (i == _FS_SHARE) return 0; /* No space to register (int err) */ |
|
|
662 Files[i].fs = dj->fs; |
|
|
663 Files[i].clu = dj->sclust; |
|
|
664 Files[i].idx = dj->index; |
|
|
665 Files[i].ctr = 0; |
|
|
666 } |
|
|
667 |
|
|
668 if (acc && Files[i].ctr) return 0; /* Access violation (int err) */ |
|
|
669 |
|
|
670 Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */ |
|
|
671 |
|
|
672 return i + 1; |
|
|
673 } |
|
|
674 |
|
|
675 |
|
|
676 static |
|
|
677 FRESULT dec_lock ( /* Decrement file open counter */ |
|
|
678 UINT i /* Semaphore index */ |
|
|
679 ) |
|
|
680 { |
|
|
681 WORD n; |
|
|
682 FRESULT res; |
|
|
683 |
|
|
684 |
|
|
685 if (--i < _FS_SHARE) { |
|
|
686 n = Files[i].ctr; |
|
|
687 if (n == 0x100) n = 0; |
|
|
688 if (n) n--; |
|
|
689 Files[i].ctr = n; |
|
|
690 if (!n) Files[i].fs = 0; |
|
|
691 res = FR_OK; |
|
|
692 } else { |
|
|
693 res = FR_INT_ERR; |
|
|
694 } |
|
|
695 return res; |
|
|
696 } |
|
|
697 |
|
|
698 |
|
|
699 static |
|
|
700 void clear_lock ( /* Clear lock entries of the volume */ |
|
|
701 FATFS *fs |
|
|
702 ) |
|
|
703 { |
|
|
704 UINT i; |
|
|
705 |
|
|
706 for (i = 0; i < _FS_SHARE; i++) { |
|
|
707 if (Files[i].fs == fs) Files[i].fs = 0; |
|
|
708 } |
|
|
709 } |
|
|
710 #endif |
|
|
711 |
|
|
712 |
|
|
713 |
|
|
714 /*-----------------------------------------------------------------------*/ |
|
|
715 /* Change window offset */ |
|
|
716 /*-----------------------------------------------------------------------*/ |
|
|
717 |
|
|
718 static |
|
|
719 FRESULT move_window ( |
|
|
720 FATFS *fs, /* File system object */ |
|
|
721 DWORD sector /* Sector number to make appearance in the fs->win[] */ |
|
|
722 ) /* Move to zero only writes back dirty window */ |
|
|
723 { |
|
|
724 DWORD wsect; |
|
|
725 |
|
|
726 |
|
|
727 wsect = fs->winsect; |
|
|
728 if (wsect != sector) { /* Changed current window */ |
|
|
729 #if !_FS_READONLY |
|
|
730 if (fs->wflag) { /* Write back dirty window if needed */ |
|
|
731 if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) |
|
|
732 return FR_DISK_ERR; |
|
|
733 fs->wflag = 0; |
|
|
734 if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */ |
|
|
735 BYTE nf; |
|
|
736 for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */ |
|
|
737 wsect += fs->fsize; |
|
|
738 disk_write(fs->drv, fs->win, wsect, 1); |
|
|
739 } |
|
|
740 } |
|
|
741 } |
|
|
742 #endif |
|
|
743 if (sector) { |
|
|
744 if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) |
|
|
745 return FR_DISK_ERR; |
|
|
746 fs->winsect = sector; |
|
|
747 } |
|
|
748 } |
|
|
749 |
|
|
750 return FR_OK; |
|
|
751 } |
|
|
752 |
|
|
753 |
|
|
754 |
|
|
755 |
|
|
756 /*-----------------------------------------------------------------------*/ |
|
|
757 /* Clean-up cached data */ |
|
|
758 /*-----------------------------------------------------------------------*/ |
|
|
759 #if !_FS_READONLY |
|
|
760 static |
|
|
761 FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */ |
|
|
762 FATFS *fs /* File system object */ |
|
|
763 ) |
|
|
764 { |
|
|
765 FRESULT res; |
|
|
766 |
|
|
767 |
|
|
768 res = move_window(fs, 0); |
|
|
769 if (res == FR_OK) { |
|
|
770 /* Update FSInfo sector if needed */ |
|
|
771 if (fs->fs_type == FS_FAT32 && fs->fsi_flag) { |
|
|
772 fs->winsect = 0; |
|
|
773 /* Create FSInfo structure */ |
|
|
774 mem_set(fs->win, 0, 512); |
|
|
775 ST_WORD(fs->win+BS_55AA, 0xAA55); |
|
|
776 ST_DWORD(fs->win+FSI_LeadSig, 0x41615252); |
|
|
777 ST_DWORD(fs->win+FSI_StrucSig, 0x61417272); |
|
|
778 ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust); |
|
|
779 ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust); |
|
|
780 /* Write it into the FSInfo sector */ |
|
|
781 disk_write(fs->drv, fs->win, fs->fsi_sector, 1); |
|
|
782 fs->fsi_flag = 0; |
|
|
783 } |
|
|
784 /* Make sure that no pending write process in the physical drive */ |
|
|
785 if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK) |
|
|
786 res = FR_DISK_ERR; |
|
|
787 } |
|
|
788 |
|
|
789 return res; |
|
|
790 } |
|
|
791 #endif |
|
|
792 |
|
|
793 |
|
|
794 |
|
|
795 |
|
|
796 /*-----------------------------------------------------------------------*/ |
|
|
797 /* Get sector# from cluster# */ |
|
|
798 /*-----------------------------------------------------------------------*/ |
|
|
799 |
|
|
800 |
|
|
801 DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ |
|
|
802 FATFS *fs, /* File system object */ |
|
|
803 DWORD clst /* Cluster# to be converted */ |
|
|
804 ) |
|
|
805 { |
|
|
806 clst -= 2; |
|
|
807 if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ |
|
|
808 return clst * fs->csize + fs->database; |
|
|
809 } |
|
|
810 |
|
|
811 |
|
|
812 |
|
|
813 |
|
|
814 /*-----------------------------------------------------------------------*/ |
|
|
815 /* FAT access - Read value of a FAT entry */ |
|
|
816 /*-----------------------------------------------------------------------*/ |
|
|
817 |
|
|
818 |
|
|
819 DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */ |
|
|
820 FATFS *fs, /* File system object */ |
|
|
821 DWORD clst /* Cluster# to get the link information */ |
|
|
822 ) |
|
|
823 { |
|
|
824 UINT wc, bc; |
|
|
825 BYTE *p; |
|
|
826 |
|
|
827 |
|
|
828 if (clst < 2 || clst >= fs->n_fatent) /* Chack range */ |
|
|
829 return 1; |
|
|
830 |
|
|
831 switch (fs->fs_type) { |
|
|
832 case FS_FAT12 : |
|
|
833 bc = (UINT)clst; bc += bc / 2; |
|
|
834 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; |
|
|
835 wc = fs->win[bc % SS(fs)]; bc++; |
|
|
836 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; |
|
|
837 wc |= fs->win[bc % SS(fs)] << 8; |
|
|
838 return (clst & 1) ? (wc >> 4) : (wc & 0xFFF); |
|
|
839 |
|
|
840 case FS_FAT16 : |
|
|
841 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break; |
|
|
842 p = &fs->win[clst * 2 % SS(fs)]; |
|
|
843 return LD_WORD(p); |
|
|
844 |
|
|
845 case FS_FAT32 : |
|
|
846 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break; |
|
|
847 p = &fs->win[clst * 4 % SS(fs)]; |
|
|
848 return LD_DWORD(p) & 0x0FFFFFFF; |
|
|
849 } |
|
|
850 |
|
|
851 return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */ |
|
|
852 } |
|
|
853 |
|
|
854 |
|
|
855 |
|
|
856 |
|
|
857 /*-----------------------------------------------------------------------*/ |
|
|
858 /* FAT access - Change value of a FAT entry */ |
|
|
859 /*-----------------------------------------------------------------------*/ |
|
|
860 #if !_FS_READONLY |
|
|
861 |
|
|
862 FRESULT put_fat ( |
|
|
863 FATFS *fs, /* File system object */ |
|
|
864 DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */ |
|
|
865 DWORD val /* New value to mark the cluster */ |
|
|
866 ) |
|
|
867 { |
|
|
868 UINT bc; |
|
|
869 BYTE *p; |
|
|
870 FRESULT res; |
|
|
871 |
|
|
872 |
|
|
873 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ |
|
|
874 res = FR_INT_ERR; |
|
|
875 |
|
|
876 } else { |
|
|
877 switch (fs->fs_type) { |
|
|
878 case FS_FAT12 : |
|
|
879 bc = clst; bc += bc / 2; |
|
|
880 res = move_window(fs, fs->fatbase + (bc / SS(fs))); |
|
|
881 if (res != FR_OK) break; |
|
|
882 p = &fs->win[bc % SS(fs)]; |
|
|
883 *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; |
|
|
884 bc++; |
|
|
885 fs->wflag = 1; |
|
|
886 res = move_window(fs, fs->fatbase + (bc / SS(fs))); |
|
|
887 if (res != FR_OK) break; |
|
|
888 p = &fs->win[bc % SS(fs)]; |
|
|
889 *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); |
|
|
890 break; |
|
|
891 |
|
|
892 case FS_FAT16 : |
|
|
893 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); |
|
|
894 if (res != FR_OK) break; |
|
|
895 p = &fs->win[clst * 2 % SS(fs)]; |
|
|
896 ST_WORD(p, (WORD)val); |
|
|
897 break; |
|
|
898 |
|
|
899 case FS_FAT32 : |
|
|
900 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); |
|
|
901 if (res != FR_OK) break; |
|
|
902 p = &fs->win[clst * 4 % SS(fs)]; |
|
|
903 val |= LD_DWORD(p) & 0xF0000000; |
|
|
904 ST_DWORD(p, val); |
|
|
905 break; |
|
|
906 |
|
|
907 default : |
|
|
908 res = FR_INT_ERR; |
|
|
909 } |
|
|
910 fs->wflag = 1; |
|
|
911 } |
|
|
912 |
|
|
913 return res; |
|
|
914 } |
|
|
915 #endif /* !_FS_READONLY */ |
|
|
916 |
|
|
917 |
|
|
918 |
|
|
919 |
|
|
920 /*-----------------------------------------------------------------------*/ |
|
|
921 /* FAT handling - Remove a cluster chain */ |
|
|
922 /*-----------------------------------------------------------------------*/ |
|
|
923 #if !_FS_READONLY |
|
|
924 static |
|
|
925 FRESULT remove_chain ( |
|
|
926 FATFS *fs, /* File system object */ |
|
|
927 DWORD clst /* Cluster# to remove a chain from */ |
|
|
928 ) |
|
|
929 { |
|
|
930 FRESULT res; |
|
|
931 DWORD nxt; |
|
|
932 #if _USE_ERASE |
|
|
933 DWORD scl = clst, ecl = clst, resion[2]; |
|
|
934 #endif |
|
|
935 |
|
|
936 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ |
|
|
937 res = FR_INT_ERR; |
|
|
938 |
|
|
939 } else { |
|
|
940 res = FR_OK; |
|
|
941 while (clst < fs->n_fatent) { /* Not a last link? */ |
|
|
942 nxt = get_fat(fs, clst); /* Get cluster status */ |
|
|
943 if (nxt == 0) break; /* Empty cluster? */ |
|
|
944 if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */ |
|
|
945 if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */ |
|
|
946 res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */ |
|
|
947 if (res != FR_OK) break; |
|
|
948 if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */ |
|
|
949 fs->free_clust++; |
|
|
950 fs->fsi_flag = 1; |
|
|
951 } |
|
|
952 #if _USE_ERASE |
|
|
953 if (ecl + 1 == nxt) { /* Next cluster is contiguous */ |
|
|
954 ecl = nxt; |
|
|
955 } else { /* End of contiguous clusters */ |
|
|
956 resion[0] = clust2sect(fs, scl); /* Start sector */ |
|
|
957 resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */ |
|
|
958 disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */ |
|
|
959 scl = ecl = nxt; |
|
|
960 } |
|
|
961 #endif |
|
|
962 clst = nxt; /* Next cluster */ |
|
|
963 } |
|
|
964 } |
|
|
965 |
|
|
966 return res; |
|
|
967 } |
|
|
968 #endif |
|
|
969 |
|
|
970 |
|
|
971 |
|
|
972 |
|
|
973 /*-----------------------------------------------------------------------*/ |
|
|
974 /* FAT handling - Stretch or Create a cluster chain */ |
|
|
975 /*-----------------------------------------------------------------------*/ |
|
|
976 #if !_FS_READONLY |
|
|
977 static |
|
|
978 DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ |
|
|
979 FATFS *fs, /* File system object */ |
|
|
980 DWORD clst /* Cluster# to stretch. 0 means create a new chain. */ |
|
|
981 ) |
|
|
982 { |
|
|
983 DWORD cs, ncl, scl; |
|
|
984 FRESULT res; |
|
|
985 |
|
|
986 |
|
|
987 if (clst == 0) { /* Create a new chain */ |
|
|
988 scl = fs->last_clust; /* Get suggested start point */ |
|
|
989 if (!scl || scl >= fs->n_fatent) scl = 1; |
|
|
990 } |
|
|
991 else { /* Stretch the current chain */ |
|
|
992 cs = get_fat(fs, clst); /* Check the cluster status */ |
|
|
993 if (cs < 2) return 1; /* It is an invalid cluster */ |
|
|
994 if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */ |
|
|
995 scl = clst; |
|
|
996 } |
|
|
997 |
|
|
998 ncl = scl; /* Start cluster */ |
|
|
999 for (;;) { |
|
|
1000 ncl++; /* Next cluster */ |
|
|
1001 if (ncl >= fs->n_fatent) { /* Wrap around */ |
|
|
1002 ncl = 2; |
|
|
1003 if (ncl > scl) return 0; /* No free cluster */ |
|
|
1004 } |
|
|
1005 cs = get_fat(fs, ncl); /* Get the cluster status */ |
|
|
1006 if (cs == 0) break; /* Found a free cluster */ |
|
|
1007 if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */ |
|
|
1008 return cs; |
|
|
1009 if (ncl == scl) return 0; /* No free cluster */ |
|
|
1010 } |
|
|
1011 |
|
|
1012 res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */ |
|
|
1013 if (res == FR_OK && clst != 0) { |
|
|
1014 res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */ |
|
|
1015 } |
|
|
1016 if (res == FR_OK) { |
|
|
1017 fs->last_clust = ncl; /* Update FSINFO */ |
|
|
1018 if (fs->free_clust != 0xFFFFFFFF) { |
|
|
1019 fs->free_clust--; |
|
|
1020 fs->fsi_flag = 1; |
|
|
1021 } |
|
|
1022 } else { |
|
|
1023 ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; |
|
|
1024 } |
|
|
1025 |
|
|
1026 return ncl; /* Return new cluster number or error code */ |
|
|
1027 } |
|
|
1028 #endif /* !_FS_READONLY */ |
|
|
1029 |
|
|
1030 |
|
|
1031 |
|
|
1032 /*-----------------------------------------------------------------------*/ |
|
|
1033 /* FAT handling - Convert offset into cluster with link map table */ |
|
|
1034 /*-----------------------------------------------------------------------*/ |
|
|
1035 |
|
|
1036 #if _USE_FASTSEEK |
|
|
1037 static |
|
|
1038 DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */ |
|
|
1039 FIL* fp, /* Pointer to the file object */ |
|
|
1040 DWORD ofs /* File offset to be converted to cluster# */ |
|
|
1041 ) |
|
|
1042 { |
|
|
1043 DWORD cl, ncl, *tbl; |
|
|
1044 |
|
|
1045 |
|
|
1046 tbl = fp->cltbl + 1; /* Top of CLMT */ |
|
|
1047 cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */ |
|
|
1048 for (;;) { |
|
|
1049 ncl = *tbl++; /* Number of cluters in the fragment */ |
|
|
1050 if (!ncl) return 0; /* End of table? (error) */ |
|
|
1051 if (cl < ncl) break; /* In this fragment? */ |
|
|
1052 cl -= ncl; tbl++; /* Next fragment */ |
|
|
1053 } |
|
|
1054 return cl + *tbl; /* Return the cluster number */ |
|
|
1055 } |
|
|
1056 #endif /* _USE_FASTSEEK */ |
|
|
1057 |
|
|
1058 |
|
|
1059 |
|
|
1060 /*-----------------------------------------------------------------------*/ |
|
|
1061 /* Directory handling - Set directory index */ |
|
|
1062 /*-----------------------------------------------------------------------*/ |
|
|
1063 |
|
|
1064 static |
|
|
1065 FRESULT dir_sdi ( |
|
|
1066 DIR *dj, /* Pointer to directory object */ |
|
|
1067 WORD idx /* Directory index number */ |
|
|
1068 ) |
|
|
1069 { |
|
|
1070 DWORD clst; |
|
|
1071 WORD ic; |
|
|
1072 |
|
|
1073 |
|
|
1074 dj->index = idx; |
|
|
1075 clst = dj->sclust; |
|
|
1076 if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */ |
|
|
1077 return FR_INT_ERR; |
|
|
1078 if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */ |
|
|
1079 clst = dj->fs->dirbase; |
|
|
1080 |
|
|
1081 if (clst == 0) { /* Static table (root-dir in FAT12/16) */ |
|
|
1082 dj->clust = clst; |
|
|
1083 if (idx >= dj->fs->n_rootdir) /* Index is out of range */ |
|
|
1084 return FR_INT_ERR; |
|
|
1085 dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ |
|
|
1086 } |
|
|
1087 else { /* Dynamic table (sub-dirs or root-dir in FAT32) */ |
|
|
1088 ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */ |
|
|
1089 while (idx >= ic) { /* Follow cluster chain */ |
|
|
1090 clst = get_fat(dj->fs, clst); /* Get next cluster */ |
|
|
1091 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ |
|
|
1092 if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */ |
|
|
1093 return FR_INT_ERR; |
|
|
1094 idx -= ic; |
|
|
1095 } |
|
|
1096 dj->clust = clst; |
|
|
1097 dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */ |
|
|
1098 } |
|
|
1099 |
|
|
1100 dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */ |
|
|
1101 |
|
|
1102 return FR_OK; /* Seek succeeded */ |
|
|
1103 } |
|
|
1104 |
|
|
1105 |
|
|
1106 |
|
|
1107 |
|
|
1108 /*-----------------------------------------------------------------------*/ |
|
|
1109 /* Directory handling - Move directory index next */ |
|
|
1110 /*-----------------------------------------------------------------------*/ |
|
|
1111 |
|
|
1112 static |
|
|
1113 FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */ |
|
|
1114 DIR *dj, /* Pointer to directory object */ |
|
|
1115 int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ |
|
|
1116 ) |
|
|
1117 { |
|
|
1118 DWORD clst; |
|
|
1119 WORD i; |
|
|
1120 |
|
|
1121 |
|
|
1122 stretch = stretch; /* To suppress warning on read-only cfg. */ |
|
|
1123 i = dj->index + 1; |
|
|
1124 if (!i || !dj->sect) /* Report EOT when index has reached 65535 */ |
|
|
1125 return FR_NO_FILE; |
|
|
1126 |
|
|
1127 if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */ |
|
|
1128 dj->sect++; /* Next sector */ |
|
|
1129 |
|
|
1130 if (dj->clust == 0) { /* Static table */ |
|
|
1131 if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */ |
|
|
1132 return FR_NO_FILE; |
|
|
1133 } |
|
|
1134 else { /* Dynamic table */ |
|
|
1135 if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */ |
|
|
1136 clst = get_fat(dj->fs, dj->clust); /* Get next cluster */ |
|
|
1137 if (clst <= 1) return FR_INT_ERR; |
|
|
1138 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; |
|
|
1139 if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */ |
|
|
1140 #if !_FS_READONLY |
|
|
1141 BYTE c; |
|
|
1142 if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */ |
|
|
1143 clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */ |
|
|
1144 if (clst == 0) return FR_DENIED; /* No free cluster */ |
|
|
1145 if (clst == 1) return FR_INT_ERR; |
|
|
1146 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; |
|
|
1147 /* Clean-up stretched table */ |
|
|
1148 if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */ |
|
|
1149 mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */ |
|
|
1150 dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */ |
|
|
1151 for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */ |
|
|
1152 dj->fs->wflag = 1; |
|
|
1153 if (move_window(dj->fs, 0)) return FR_DISK_ERR; |
|
|
1154 dj->fs->winsect++; |
|
|
1155 } |
|
|
1156 dj->fs->winsect -= c; /* Rewind window address */ |
|
|
1157 #else |
|
|
1158 return FR_NO_FILE; /* Report EOT */ |
|
|
1159 #endif |
|
|
1160 } |
|
|
1161 dj->clust = clst; /* Initialize data for new cluster */ |
|
|
1162 dj->sect = clust2sect(dj->fs, clst); |
|
|
1163 } |
|
|
1164 } |
|
|
1165 } |
|
|
1166 |
|
|
1167 dj->index = i; |
|
|
1168 dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; |
|
|
1169 |
|
|
1170 return FR_OK; |
|
|
1171 } |
|
|
1172 |
|
|
1173 |
|
|
1174 |
|
|
1175 |
|
|
1176 /*-----------------------------------------------------------------------*/ |
|
|
1177 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */ |
|
|
1178 /*-----------------------------------------------------------------------*/ |
|
|
1179 #if _USE_LFN |
|
|
1180 static |
|
|
1181 const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */ |
|
|
1182 |
|
|
1183 |
|
|
1184 static |
|
|
1185 int cmp_lfn ( /* 1:Matched, 0:Not matched */ |
|
|
1186 WCHAR *lfnbuf, /* Pointer to the LFN to be compared */ |
|
|
1187 BYTE *dir /* Pointer to the directory entry containing a part of LFN */ |
|
|
1188 ) |
|
|
1189 { |
|
|
1190 UINT i, s; |
|
|
1191 WCHAR wc, uc; |
|
|
1192 |
|
|
1193 |
|
|
1194 i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */ |
|
|
1195 s = 0; wc = 1; |
|
|
1196 do { |
|
|
1197 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ |
|
|
1198 if (wc) { /* Last char has not been processed */ |
|
|
1199 wc = ff_wtoupper(uc); /* Convert it to upper case */ |
|
|
1200 if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */ |
|
|
1201 return 0; /* Not matched */ |
|
|
1202 } else { |
|
|
1203 if (uc != 0xFFFF) return 0; /* Check filler */ |
|
|
1204 } |
|
|
1205 } while (++s < 13); /* Repeat until all chars in the entry are checked */ |
|
|
1206 |
|
|
1207 if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */ |
|
|
1208 return 0; |
|
|
1209 |
|
|
1210 return 1; /* The part of LFN matched */ |
|
|
1211 } |
|
|
1212 |
|
|
1213 |
|
|
1214 |
|
|
1215 static |
|
|
1216 int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */ |
|
|
1217 WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */ |
|
|
1218 BYTE *dir /* Pointer to the directory entry */ |
|
|
1219 ) |
|
|
1220 { |
|
|
1221 UINT i, s; |
|
|
1222 WCHAR wc, uc; |
|
|
1223 |
|
|
1224 |
|
|
1225 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ |
|
|
1226 |
|
|
1227 s = 0; wc = 1; |
|
|
1228 do { |
|
|
1229 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ |
|
|
1230 if (wc) { /* Last char has not been processed */ |
|
|
1231 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
|
|
1232 lfnbuf[i++] = wc = uc; /* Store it */ |
|
|
1233 } else { |
|
|
1234 if (uc != 0xFFFF) return 0; /* Check filler */ |
|
|
1235 } |
|
|
1236 } while (++s < 13); /* Read all character in the entry */ |
|
|
1237 |
|
|
1238 if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */ |
|
|
1239 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
|
|
1240 lfnbuf[i] = 0; |
|
|
1241 } |
|
|
1242 |
|
|
1243 return 1; |
|
|
1244 } |
|
|
1245 |
|
|
1246 |
|
|
1247 #if !_FS_READONLY |
|
|
1248 static |
|
|
1249 void fit_lfn ( |
|
|
1250 const WCHAR *lfnbuf, /* Pointer to the LFN buffer */ |
|
|
1251 BYTE *dir, /* Pointer to the directory entry */ |
|
|
1252 BYTE ord, /* LFN order (1-20) */ |
|
|
1253 BYTE sum /* SFN sum */ |
|
|
1254 ) |
|
|
1255 { |
|
|
1256 UINT i, s; |
|
|
1257 WCHAR wc; |
|
|
1258 |
|
|
1259 |
|
|
1260 dir[LDIR_Chksum] = sum; /* Set check sum */ |
|
|
1261 dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ |
|
|
1262 dir[LDIR_Type] = 0; |
|
|
1263 ST_WORD(dir+LDIR_FstClusLO, 0); |
|
|
1264 |
|
|
1265 i = (ord - 1) * 13; /* Get offset in the LFN buffer */ |
|
|
1266 s = wc = 0; |
|
|
1267 do { |
|
|
1268 if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */ |
|
|
1269 ST_WORD(dir+LfnOfs[s], wc); /* Put it */ |
|
|
1270 if (!wc) wc = 0xFFFF; /* Padding chars following last char */ |
|
|
1271 } while (++s < 13); |
|
|
1272 if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */ |
|
|
1273 dir[LDIR_Ord] = ord; /* Set the LFN order */ |
|
|
1274 } |
|
|
1275 |
|
|
1276 #endif |
|
|
1277 #endif |
|
|
1278 |
|
|
1279 |
|
|
1280 |
|
|
1281 /*-----------------------------------------------------------------------*/ |
|
|
1282 /* Create numbered name */ |
|
|
1283 /*-----------------------------------------------------------------------*/ |
|
|
1284 #if _USE_LFN |
|
|
1285 void gen_numname ( |
|
|
1286 BYTE *dst, /* Pointer to generated SFN */ |
|
|
1287 const BYTE *src, /* Pointer to source SFN to be modified */ |
|
|
1288 const WCHAR *lfn, /* Pointer to LFN */ |
|
|
1289 WORD seq /* Sequence number */ |
|
|
1290 ) |
|
|
1291 { |
|
|
1292 BYTE ns[8], c; |
|
|
1293 UINT i, j; |
|
|
1294 |
|
|
1295 |
|
|
1296 mem_cpy(dst, src, 11); |
|
|
1297 |
|
|
1298 if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */ |
|
|
1299 do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn); |
|
|
1300 } |
|
|
1301 |
|
|
1302 /* itoa (hexdecimal) */ |
|
|
1303 i = 7; |
|
|
1304 do { |
|
|
1305 c = (seq % 16) + '0'; |
|
|
1306 if (c > '9') c += 7; |
|
|
1307 ns[i--] = c; |
|
|
1308 seq /= 16; |
|
|
1309 } while (seq); |
|
|
1310 ns[i] = '~'; |
|
|
1311 |
|
|
1312 /* Append the number */ |
|
|
1313 for (j = 0; j < i && dst[j] != ' '; j++) { |
|
|
1314 if (IsDBCS1(dst[j])) { |
|
|
1315 if (j == i - 1) break; |
|
|
1316 j++; |
|
|
1317 } |
|
|
1318 } |
|
|
1319 do { |
|
|
1320 dst[j++] = (i < 8) ? ns[i++] : ' '; |
|
|
1321 } while (j < 8); |
|
|
1322 } |
|
|
1323 #endif |
|
|
1324 |
|
|
1325 |
|
|
1326 |
|
|
1327 |
|
|
1328 /*-----------------------------------------------------------------------*/ |
|
|
1329 /* Calculate sum of an SFN */ |
|
|
1330 /*-----------------------------------------------------------------------*/ |
|
|
1331 #if _USE_LFN |
|
|
1332 static |
|
|
1333 BYTE sum_sfn ( |
|
|
1334 const BYTE *dir /* Ptr to directory entry */ |
|
|
1335 ) |
|
|
1336 { |
|
|
1337 BYTE sum = 0; |
|
|
1338 UINT n = 11; |
|
|
1339 |
|
|
1340 do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n); |
|
|
1341 return sum; |
|
|
1342 } |
|
|
1343 #endif |
|
|
1344 |
|
|
1345 |
|
|
1346 |
|
|
1347 |
|
|
1348 /*-----------------------------------------------------------------------*/ |
|
|
1349 /* Directory handling - Find an object in the directory */ |
|
|
1350 /*-----------------------------------------------------------------------*/ |
|
|
1351 |
|
|
1352 static |
|
|
1353 FRESULT dir_find ( |
|
|
1354 DIR *dj /* Pointer to the directory object linked to the file name */ |
|
|
1355 ) |
|
|
1356 { |
|
|
1357 FRESULT res; |
|
|
1358 BYTE c, *dir; |
|
|
1359 #if _USE_LFN |
|
|
1360 BYTE a, ord, sum; |
|
|
1361 #endif |
|
|
1362 |
|
|
1363 res = dir_sdi(dj, 0); /* Rewind directory object */ |
|
|
1364 if (res != FR_OK) return res; |
|
|
1365 |
|
|
1366 #if _USE_LFN |
|
|
1367 ord = sum = 0xFF; |
|
|
1368 #endif |
|
|
1369 do { |
|
|
1370 res = move_window(dj->fs, dj->sect); |
|
|
1371 if (res != FR_OK) break; |
|
|
1372 dir = dj->dir; /* Ptr to the directory entry of current index */ |
|
|
1373 c = dir[DIR_Name]; |
|
|
1374 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
|
|
1375 #if _USE_LFN /* LFN configuration */ |
|
|
1376 a = dir[DIR_Attr] & AM_MASK; |
|
|
1377 if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ |
|
|
1378 ord = 0xFF; |
|
|
1379 } else { |
|
|
1380 if (a == AM_LFN) { /* An LFN entry is found */ |
|
|
1381 if (dj->lfn) { |
|
|
1382 if (c & LLE) { /* Is it start of LFN sequence? */ |
|
|
1383 sum = dir[LDIR_Chksum]; |
|
|
1384 c &= ~LLE; ord = c; /* LFN start order */ |
|
|
1385 dj->lfn_idx = dj->index; |
|
|
1386 } |
|
|
1387 /* Check validity of the LFN entry and compare it with given name */ |
|
|
1388 ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; |
|
|
1389 } |
|
|
1390 } else { /* An SFN entry is found */ |
|
|
1391 if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */ |
|
|
1392 ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */ |
|
|
1393 if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */ |
|
|
1394 } |
|
|
1395 } |
|
|
1396 #else /* Non LFN configuration */ |
|
|
1397 if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */ |
|
|
1398 break; |
|
|
1399 #endif |
|
|
1400 res = dir_next(dj, 0); /* Next entry */ |
|
|
1401 } while (res == FR_OK); |
|
|
1402 |
|
|
1403 return res; |
|
|
1404 } |
|
|
1405 |
|
|
1406 |
|
|
1407 |
|
|
1408 |
|
|
1409 /*-----------------------------------------------------------------------*/ |
|
|
1410 /* Read an object from the directory */ |
|
|
1411 /*-----------------------------------------------------------------------*/ |
|
|
1412 #if _FS_MINIMIZE <= 1 |
|
|
1413 static |
|
|
1414 FRESULT dir_read ( |
|
|
1415 DIR *dj /* Pointer to the directory object that pointing the entry to be read */ |
|
|
1416 ) |
|
|
1417 { |
|
|
1418 FRESULT res; |
|
|
1419 BYTE c, *dir; |
|
|
1420 #if _USE_LFN |
|
|
1421 BYTE a, ord = 0xFF, sum = 0xFF; |
|
|
1422 #endif |
|
|
1423 |
|
|
1424 res = FR_NO_FILE; |
|
|
1425 while (dj->sect) { |
|
|
1426 res = move_window(dj->fs, dj->sect); |
|
|
1427 if (res != FR_OK) break; |
|
|
1428 dir = dj->dir; /* Ptr to the directory entry of current index */ |
|
|
1429 c = dir[DIR_Name]; |
|
|
1430 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
|
|
1431 #if _USE_LFN /* LFN configuration */ |
|
|
1432 a = dir[DIR_Attr] & AM_MASK; |
|
|
1433 if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ |
|
|
1434 ord = 0xFF; |
|
|
1435 } else { |
|
|
1436 if (a == AM_LFN) { /* An LFN entry is found */ |
|
|
1437 if (c & LLE) { /* Is it start of LFN sequence? */ |
|
|
1438 sum = dir[LDIR_Chksum]; |
|
|
1439 c &= ~LLE; ord = c; |
|
|
1440 dj->lfn_idx = dj->index; |
|
|
1441 } |
|
|
1442 /* Check LFN validity and capture it */ |
|
|
1443 ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; |
|
|
1444 } else { /* An SFN entry is found */ |
|
|
1445 if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */ |
|
|
1446 dj->lfn_idx = 0xFFFF; /* It has no LFN. */ |
|
|
1447 break; |
|
|
1448 } |
|
|
1449 } |
|
|
1450 #else /* Non LFN configuration */ |
|
|
1451 if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */ |
|
|
1452 break; |
|
|
1453 #endif |
|
|
1454 res = dir_next(dj, 0); /* Next entry */ |
|
|
1455 if (res != FR_OK) break; |
|
|
1456 } |
|
|
1457 |
|
|
1458 if (res != FR_OK) dj->sect = 0; |
|
|
1459 |
|
|
1460 return res; |
|
|
1461 } |
|
|
1462 #endif |
|
|
1463 |
|
|
1464 |
|
|
1465 |
|
|
1466 /*-----------------------------------------------------------------------*/ |
|
|
1467 /* Register an object to the directory */ |
|
|
1468 /*-----------------------------------------------------------------------*/ |
|
|
1469 #if !_FS_READONLY |
|
|
1470 static |
|
|
1471 FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */ |
|
|
1472 DIR *dj /* Target directory with object name to be created */ |
|
|
1473 ) |
|
|
1474 { |
|
|
1475 FRESULT res; |
|
|
1476 BYTE c, *dir; |
|
|
1477 #if _USE_LFN /* LFN configuration */ |
|
|
1478 WORD n, ne, is; |
|
|
1479 BYTE sn[12], *fn, sum; |
|
|
1480 WCHAR *lfn; |
|
|
1481 |
|
|
1482 |
|
|
1483 fn = dj->fn; lfn = dj->lfn; |
|
|
1484 mem_cpy(sn, fn, 12); |
|
|
1485 |
|
|
1486 if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */ |
|
|
1487 return FR_INVALID_NAME; |
|
|
1488 |
|
|
1489 if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ |
|
|
1490 fn[NS] = 0; dj->lfn = 0; /* Find only SFN */ |
|
|
1491 for (n = 1; n < 100; n++) { |
|
|
1492 gen_numname(fn, sn, lfn, n); /* Generate a numbered name */ |
|
|
1493 res = dir_find(dj); /* Check if the name collides with existing SFN */ |
|
|
1494 if (res != FR_OK) break; |
|
|
1495 } |
|
|
1496 if (n == 100) return FR_DENIED; /* Abort if too many collisions */ |
|
|
1497 if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */ |
|
|
1498 fn[NS] = sn[NS]; dj->lfn = lfn; |
|
|
1499 } |
|
|
1500 |
|
|
1501 if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */ |
|
|
1502 for (ne = 0; lfn[ne]; ne++) ; |
|
|
1503 ne = (ne + 25) / 13; |
|
|
1504 } else { /* Otherwise reserve only an SFN entry. */ |
|
|
1505 ne = 1; |
|
|
1506 } |
|
|
1507 |
|
|
1508 /* Reserve contiguous entries */ |
|
|
1509 res = dir_sdi(dj, 0); |
|
|
1510 if (res != FR_OK) return res; |
|
|
1511 n = is = 0; |
|
|
1512 do { |
|
|
1513 res = move_window(dj->fs, dj->sect); |
|
|
1514 if (res != FR_OK) break; |
|
|
1515 c = *dj->dir; /* Check the entry status */ |
|
|
1516 if (c == DDE || c == 0) { /* Is it a blank entry? */ |
|
|
1517 if (n == 0) is = dj->index; /* First index of the contiguous entry */ |
|
|
1518 if (++n == ne) break; /* A contiguous entry that required count is found */ |
|
|
1519 } else { |
|
|
1520 n = 0; /* Not a blank entry. Restart to search */ |
|
|
1521 } |
|
|
1522 res = dir_next(dj, 1); /* Next entry with table stretch */ |
|
|
1523 } while (res == FR_OK); |
|
|
1524 |
|
|
1525 if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */ |
|
|
1526 res = dir_sdi(dj, is); |
|
|
1527 if (res == FR_OK) { |
|
|
1528 sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */ |
|
|
1529 ne--; |
|
|
1530 do { /* Store LFN entries in bottom first */ |
|
|
1531 res = move_window(dj->fs, dj->sect); |
|
|
1532 if (res != FR_OK) break; |
|
|
1533 fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum); |
|
|
1534 dj->fs->wflag = 1; |
|
|
1535 res = dir_next(dj, 0); /* Next entry */ |
|
|
1536 } while (res == FR_OK && --ne); |
|
|
1537 } |
|
|
1538 } |
|
|
1539 |
|
|
1540 #else /* Non LFN configuration */ |
|
|
1541 res = dir_sdi(dj, 0); |
|
|
1542 if (res == FR_OK) { |
|
|
1543 do { /* Find a blank entry for the SFN */ |
|
|
1544 res = move_window(dj->fs, dj->sect); |
|
|
1545 if (res != FR_OK) break; |
|
|
1546 c = *dj->dir; |
|
|
1547 if (c == DDE || c == 0) break; /* Is it a blank entry? */ |
|
|
1548 res = dir_next(dj, 1); /* Next entry with table stretch */ |
|
|
1549 } while (res == FR_OK); |
|
|
1550 } |
|
|
1551 #endif |
|
|
1552 |
|
|
1553 if (res == FR_OK) { /* Initialize the SFN entry */ |
|
|
1554 res = move_window(dj->fs, dj->sect); |
|
|
1555 if (res == FR_OK) { |
|
|
1556 dir = dj->dir; |
|
|
1557 mem_set(dir, 0, SZ_DIR); /* Clean the entry */ |
|
|
1558 mem_cpy(dir, dj->fn, 11); /* Put SFN */ |
|
|
1559 #if _USE_LFN |
|
|
1560 dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */ |
|
|
1561 #endif |
|
|
1562 dj->fs->wflag = 1; |
|
|
1563 } |
|
|
1564 } |
|
|
1565 |
|
|
1566 return res; |
|
|
1567 } |
|
|
1568 #endif /* !_FS_READONLY */ |
|
|
1569 |
|
|
1570 |
|
|
1571 |
|
|
1572 |
|
|
1573 /*-----------------------------------------------------------------------*/ |
|
|
1574 /* Remove an object from the directory */ |
|
|
1575 /*-----------------------------------------------------------------------*/ |
|
|
1576 #if !_FS_READONLY && !_FS_MINIMIZE |
|
|
1577 static |
|
|
1578 FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ |
|
|
1579 DIR *dj /* Directory object pointing the entry to be removed */ |
|
|
1580 ) |
|
|
1581 { |
|
|
1582 FRESULT res; |
|
|
1583 #if _USE_LFN /* LFN configuration */ |
|
|
1584 WORD i; |
|
|
1585 |
|
|
1586 i = dj->index; /* SFN index */ |
|
|
1587 res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */ |
|
|
1588 if (res == FR_OK) { |
|
|
1589 do { |
|
|
1590 res = move_window(dj->fs, dj->sect); |
|
|
1591 if (res != FR_OK) break; |
|
|
1592 *dj->dir = DDE; /* Mark the entry "deleted" */ |
|
|
1593 dj->fs->wflag = 1; |
|
|
1594 if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */ |
|
|
1595 res = dir_next(dj, 0); /* Next entry */ |
|
|
1596 } while (res == FR_OK); |
|
|
1597 if (res == FR_NO_FILE) res = FR_INT_ERR; |
|
|
1598 } |
|
|
1599 |
|
|
1600 #else /* Non LFN configuration */ |
|
|
1601 res = dir_sdi(dj, dj->index); |
|
|
1602 if (res == FR_OK) { |
|
|
1603 res = move_window(dj->fs, dj->sect); |
|
|
1604 if (res == FR_OK) { |
|
|
1605 *dj->dir = DDE; /* Mark the entry "deleted" */ |
|
|
1606 dj->fs->wflag = 1; |
|
|
1607 } |
|
|
1608 } |
|
|
1609 #endif |
|
|
1610 |
|
|
1611 return res; |
|
|
1612 } |
|
|
1613 #endif /* !_FS_READONLY */ |
|
|
1614 |
|
|
1615 |
|
|
1616 |
|
|
1617 |
|
|
1618 /*-----------------------------------------------------------------------*/ |
|
|
1619 /* Pick a segment and create the object name in directory form */ |
|
|
1620 /*-----------------------------------------------------------------------*/ |
|
|
1621 |
|
|
1622 static |
|
|
1623 FRESULT create_name ( |
|
|
1624 DIR *dj, /* Pointer to the directory object */ |
|
|
1625 const TCHAR **path /* Pointer to pointer to the segment in the path string */ |
|
|
1626 ) |
|
|
1627 { |
|
|
1628 #ifdef _EXCVT |
|
|
1629 static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */ |
|
|
1630 #endif |
|
|
1631 |
|
|
1632 #if _USE_LFN /* LFN configuration */ |
|
|
1633 BYTE b, cf; |
|
|
1634 WCHAR w, *lfn; |
|
|
1635 UINT i, ni, si, di; |
|
|
1636 const TCHAR *p; |
|
|
1637 |
|
|
1638 /* Create LFN in Unicode */ |
|
|
1639 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ |
|
|
1640 lfn = dj->lfn; |
|
|
1641 si = di = 0; |
|
|
1642 for (;;) { |
|
|
1643 w = p[si++]; /* Get a character */ |
|
|
1644 if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */ |
|
|
1645 if (di >= _MAX_LFN) /* Reject too long name */ |
|
|
1646 return FR_INVALID_NAME; |
|
|
1647 #if !_LFN_UNICODE |
|
|
1648 w &= 0xFF; |
|
|
1649 if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ |
|
|
1650 b = (BYTE)p[si++]; /* Get 2nd byte */ |
|
|
1651 if (!IsDBCS2(b)) |
|
|
1652 return FR_INVALID_NAME; /* Reject invalid sequence */ |
|
|
1653 w = (w << 8) + b; /* Create a DBC */ |
|
|
1654 } |
|
|
1655 w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */ |
|
|
1656 if (!w) return FR_INVALID_NAME; /* Reject invalid code */ |
|
|
1657 #endif |
|
|
1658 if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */ |
|
|
1659 return FR_INVALID_NAME; |
|
|
1660 lfn[di++] = w; /* Store the Unicode char */ |
|
|
1661 } |
|
|
1662 *path = &p[si]; /* Return pointer to the next segment */ |
|
|
1663 cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ |
|
|
1664 #if _FS_RPATH |
|
|
1665 if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */ |
|
|
1666 (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) { |
|
|
1667 lfn[di] = 0; |
|
|
1668 for (i = 0; i < 11; i++) |
|
|
1669 dj->fn[i] = (i < di) ? '.' : ' '; |
|
|
1670 dj->fn[i] = cf | NS_DOT; /* This is a dot entry */ |
|
|
1671 return FR_OK; |
|
|
1672 } |
|
|
1673 #endif |
|
|
1674 while (di) { /* Strip trailing spaces and dots */ |
|
|
1675 w = lfn[di-1]; |
|
|
1676 if (w != ' ' && w != '.') break; |
|
|
1677 di--; |
|
|
1678 } |
|
|
1679 if (!di) return FR_INVALID_NAME; /* Reject nul string */ |
|
|
1680 |
|
|
1681 lfn[di] = 0; /* LFN is created */ |
|
|
1682 |
|
|
1683 /* Create SFN in directory form */ |
|
|
1684 mem_set(dj->fn, ' ', 11); |
|
|
1685 for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */ |
|
|
1686 if (si) cf |= NS_LOSS | NS_LFN; |
|
|
1687 while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */ |
|
|
1688 |
|
|
1689 b = i = 0; ni = 8; |
|
|
1690 for (;;) { |
|
|
1691 w = lfn[si++]; /* Get an LFN char */ |
|
|
1692 if (!w) break; /* Break on end of the LFN */ |
|
|
1693 if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */ |
|
|
1694 cf |= NS_LOSS | NS_LFN; continue; |
|
|
1695 } |
|
|
1696 |
|
|
1697 if (i >= ni || si == di) { /* Extension or end of SFN */ |
|
|
1698 if (ni == 11) { /* Long extension */ |
|
|
1699 cf |= NS_LOSS | NS_LFN; break; |
|
|
1700 } |
|
|
1701 if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */ |
|
|
1702 if (si > di) break; /* No extension */ |
|
|
1703 si = di; i = 8; ni = 11; /* Enter extension section */ |
|
|
1704 b <<= 2; continue; |
|
|
1705 } |
|
|
1706 |
|
|
1707 if (w >= 0x80) { /* Non ASCII char */ |
|
|
1708 #ifdef _EXCVT |
|
|
1709 w = ff_convert(w, 0); /* Unicode -> OEM code */ |
|
|
1710 if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */ |
|
|
1711 #else |
|
|
1712 w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */ |
|
|
1713 #endif |
|
|
1714 cf |= NS_LFN; /* Force create LFN entry */ |
|
|
1715 } |
|
|
1716 |
|
|
1717 if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */ |
|
|
1718 if (i >= ni - 1) { |
|
|
1719 cf |= NS_LOSS | NS_LFN; i = ni; continue; |
|
|
1720 } |
|
|
1721 dj->fn[i++] = (BYTE)(w >> 8); |
|
|
1722 } else { /* Single byte char */ |
|
|
1723 if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */ |
|
|
1724 w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */ |
|
|
1725 } else { |
|
|
1726 if (IsUpper(w)) { /* ASCII large capital */ |
|
|
1727 b |= 2; |
|
|
1728 } else { |
|
|
1729 if (IsLower(w)) { /* ASCII small capital */ |
|
|
1730 b |= 1; w -= 0x20; |
|
|
1731 } |
|
|
1732 } |
|
|
1733 } |
|
|
1734 } |
|
|
1735 dj->fn[i++] = (BYTE)w; |
|
|
1736 } |
|
|
1737 |
|
|
1738 if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */ |
|
|
1739 |
|
|
1740 if (ni == 8) b <<= 2; |
|
|
1741 if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */ |
|
|
1742 cf |= NS_LFN; |
|
|
1743 if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */ |
|
|
1744 if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */ |
|
|
1745 if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */ |
|
|
1746 } |
|
|
1747 |
|
|
1748 dj->fn[NS] = cf; /* SFN is created */ |
|
|
1749 |
|
|
1750 return FR_OK; |
|
|
1751 |
|
|
1752 |
|
|
1753 #else /* Non-LFN configuration */ |
|
|
1754 BYTE b, c, d, *sfn; |
|
|
1755 UINT ni, si, i; |
|
|
1756 const char *p; |
|
|
1757 |
|
|
1758 /* Create file name in directory form */ |
|
|
1759 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ |
|
|
1760 sfn = dj->fn; |
|
|
1761 mem_set(sfn, ' ', 11); |
|
|
1762 si = i = b = 0; ni = 8; |
|
|
1763 #if _FS_RPATH |
|
|
1764 if (p[si] == '.') { /* Is this a dot entry? */ |
|
|
1765 for (;;) { |
|
|
1766 c = (BYTE)p[si++]; |
|
|
1767 if (c != '.' || si >= 3) break; |
|
|
1768 sfn[i++] = c; |
|
|
1769 } |
|
|
1770 if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME; |
|
|
1771 *path = &p[si]; /* Return pointer to the next segment */ |
|
|
1772 sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */ |
|
|
1773 return FR_OK; |
|
|
1774 } |
|
|
1775 #endif |
|
|
1776 for (;;) { |
|
|
1777 c = (BYTE)p[si++]; |
|
|
1778 if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */ |
|
|
1779 if (c == '.' || i >= ni) { |
|
|
1780 if (ni != 8 || c != '.') return FR_INVALID_NAME; |
|
|
1781 i = 8; ni = 11; |
|
|
1782 b <<= 2; continue; |
|
|
1783 } |
|
|
1784 if (c >= 0x80) { /* Extended char? */ |
|
|
1785 b |= 3; /* Eliminate NT flag */ |
|
|
1786 #ifdef _EXCVT |
|
|
1787 c = excvt[c-0x80]; /* Upper conversion (SBCS) */ |
|
|
1788 #else |
|
|
1789 #if !_DF1S /* ASCII only cfg */ |
|
|
1790 return FR_INVALID_NAME; |
|
|
1791 #endif |
|
|
1792 #endif |
|
|
1793 } |
|
|
1794 if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ |
|
|
1795 d = (BYTE)p[si++]; /* Get 2nd byte */ |
|
|
1796 if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */ |
|
|
1797 return FR_INVALID_NAME; |
|
|
1798 sfn[i++] = c; |
|
|
1799 sfn[i++] = d; |
|
|
1800 } else { /* Single byte code */ |
|
|
1801 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */ |
|
|
1802 return FR_INVALID_NAME; |
|
|
1803 if (IsUpper(c)) { /* ASCII large capital? */ |
|
|
1804 b |= 2; |
|
|
1805 } else { |
|
|
1806 if (IsLower(c)) { /* ASCII small capital? */ |
|
|
1807 b |= 1; c -= 0x20; |
|
|
1808 } |
|
|
1809 } |
|
|
1810 sfn[i++] = c; |
|
|
1811 } |
|
|
1812 } |
|
|
1813 *path = &p[si]; /* Return pointer to the next segment */ |
|
|
1814 c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ |
|
|
1815 |
|
|
1816 if (!i) return FR_INVALID_NAME; /* Reject nul string */ |
|
|
1817 if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */ |
|
|
1818 |
|
|
1819 if (ni == 8) b <<= 2; |
|
|
1820 if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */ |
|
|
1821 if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */ |
|
|
1822 |
|
|
1823 sfn[NS] = c; /* Store NT flag, File name is created */ |
|
|
1824 |
|
|
1825 return FR_OK; |
|
|
1826 #endif |
|
|
1827 } |
|
|
1828 |
|
|
1829 |
|
|
1830 |
|
|
1831 |
|
|
1832 /*-----------------------------------------------------------------------*/ |
|
|
1833 /* Get file information from directory entry */ |
|
|
1834 /*-----------------------------------------------------------------------*/ |
|
|
1835 #if _FS_MINIMIZE <= 1 |
|
|
1836 static |
|
|
1837 void get_fileinfo ( /* No return code */ |
|
|
1838 DIR *dj, /* Pointer to the directory object */ |
|
|
1839 FILINFO *fno /* Pointer to the file information to be filled */ |
|
|
1840 ) |
|
|
1841 { |
|
|
1842 UINT i; |
|
|
1843 BYTE nt, *dir; |
|
|
1844 TCHAR *p, c; |
|
|
1845 |
|
|
1846 |
|
|
1847 p = fno->fname; |
|
|
1848 if (dj->sect) { |
|
|
1849 dir = dj->dir; |
|
|
1850 nt = dir[DIR_NTres]; /* NT flag */ |
|
|
1851 for (i = 0; i < 8; i++) { /* Copy name body */ |
|
|
1852 c = dir[i]; |
|
|
1853 if (c == ' ') break; |
|
|
1854 if (c == NDDE) c = (TCHAR)DDE; |
|
|
1855 if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20; |
|
|
1856 #if _LFN_UNICODE |
|
|
1857 if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1])) |
|
|
1858 c = (c << 8) | dir[++i]; |
|
|
1859 c = ff_convert(c, 1); |
|
|
1860 if (!c) c = '?'; |
|
|
1861 #endif |
|
|
1862 *p++ = c; |
|
|
1863 } |
|
|
1864 if (dir[8] != ' ') { /* Copy name extension */ |
|
|
1865 *p++ = '.'; |
|
|
1866 for (i = 8; i < 11; i++) { |
|
|
1867 c = dir[i]; |
|
|
1868 if (c == ' ') break; |
|
|
1869 if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20; |
|
|
1870 #if _LFN_UNICODE |
|
|
1871 if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1])) |
|
|
1872 c = (c << 8) | dir[++i]; |
|
|
1873 c = ff_convert(c, 1); |
|
|
1874 if (!c) c = '?'; |
|
|
1875 #endif |
|
|
1876 *p++ = c; |
|
|
1877 } |
|
|
1878 } |
|
|
1879 fno->fattrib = dir[DIR_Attr]; /* Attribute */ |
|
|
1880 fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ |
|
|
1881 fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ |
|
|
1882 fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ |
|
|
1883 } |
|
|
1884 *p = 0; /* Terminate SFN str by a \0 */ |
|
|
1885 |
|
|
1886 #if _USE_LFN |
|
|
1887 if (fno->lfname && fno->lfsize) { |
|
|
1888 TCHAR *tp = fno->lfname; |
|
|
1889 WCHAR w, *lfn; |
|
|
1890 |
|
|
1891 i = 0; |
|
|
1892 if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */ |
|
|
1893 lfn = dj->lfn; |
|
|
1894 while ((w = *lfn++) != 0) { /* Get an LFN char */ |
|
|
1895 #if !_LFN_UNICODE |
|
|
1896 w = ff_convert(w, 0); /* Unicode -> OEM conversion */ |
|
|
1897 if (!w) { i = 0; break; } /* Could not convert, no LFN */ |
|
|
1898 if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */ |
|
|
1899 tp[i++] = (TCHAR)(w >> 8); |
|
|
1900 #endif |
|
|
1901 if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */ |
|
|
1902 tp[i++] = (TCHAR)w; |
|
|
1903 } |
|
|
1904 } |
|
|
1905 tp[i] = 0; /* Terminate the LFN str by a \0 */ |
|
|
1906 } |
|
|
1907 #endif |
|
|
1908 } |
|
|
1909 #endif /* _FS_MINIMIZE <= 1 */ |
|
|
1910 |
|
|
1911 |
|
|
1912 |
|
|
1913 |
|
|
1914 /*-----------------------------------------------------------------------*/ |
|
|
1915 /* Follow a file path */ |
|
|
1916 /*-----------------------------------------------------------------------*/ |
|
|
1917 |
|
|
1918 static |
|
|
1919 FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ |
|
|
1920 DIR *dj, /* Directory object to return last directory and found object */ |
|
|
1921 const TCHAR *path /* Full-path string to find a file or directory */ |
|
|
1922 ) |
|
|
1923 { |
|
|
1924 FRESULT res; |
|
|
1925 BYTE *dir, ns; |
|
|
1926 |
|
|
1927 |
|
|
1928 #if _FS_RPATH |
|
|
1929 if (*path == '/' || *path == '\\') { /* There is a heading separator */ |
|
|
1930 path++; dj->sclust = 0; /* Strip it and start from the root dir */ |
|
|
1931 } else { /* No heading separator */ |
|
|
1932 dj->sclust = dj->fs->cdir; /* Start from the current dir */ |
|
|
1933 } |
|
|
1934 #else |
|
|
1935 if (*path == '/' || *path == '\\') /* Strip heading separator if exist */ |
|
|
1936 path++; |
|
|
1937 dj->sclust = 0; /* Start from the root dir */ |
|
|
1938 #endif |
|
|
1939 |
|
|
1940 if ((UINT)*path < ' ') { /* Nul path means the start directory itself */ |
|
|
1941 res = dir_sdi(dj, 0); |
|
|
1942 dj->dir = 0; |
|
|
1943 |
|
|
1944 } else { /* Follow path */ |
|
|
1945 for (;;) { |
|
|
1946 res = create_name(dj, &path); /* Get a segment */ |
|
|
1947 if (res != FR_OK) break; |
|
|
1948 res = dir_find(dj); /* Find it */ |
|
|
1949 ns = *(dj->fn+NS); |
|
|
1950 if (res != FR_OK) { /* Failed to find the object */ |
|
|
1951 if (res != FR_NO_FILE) break; /* Abort if any hard error occured */ |
|
|
1952 /* Object not found */ |
|
|
1953 if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */ |
|
|
1954 dj->sclust = 0; dj->dir = 0; /* It is the root dir */ |
|
|
1955 res = FR_OK; |
|
|
1956 if (!(ns & NS_LAST)) continue; |
|
|
1957 } else { /* Could not find the object */ |
|
|
1958 if (!(ns & NS_LAST)) res = FR_NO_PATH; |
|
|
1959 } |
|
|
1960 break; |
|
|
1961 } |
|
|
1962 if (ns & NS_LAST) break; /* Last segment match. Function completed. */ |
|
|
1963 dir = dj->dir; /* There is next segment. Follow the sub directory */ |
|
|
1964 if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */ |
|
|
1965 res = FR_NO_PATH; break; |
|
|
1966 } |
|
|
1967 dj->sclust = LD_CLUST(dir); |
|
|
1968 } |
|
|
1969 } |
|
|
1970 |
|
|
1971 return res; |
|
|
1972 } |
|
|
1973 |
|
|
1974 |
|
|
1975 |
|
|
1976 |
|
|
1977 /*-----------------------------------------------------------------------*/ |
|
|
1978 /* Load a sector and check if it is an FAT Volume Boot Record */ |
|
|
1979 /*-----------------------------------------------------------------------*/ |
|
|
1980 |
|
|
1981 static |
|
|
1982 BYTE check_fs ( /* 0:FAT-VBR, 1:Valid BR but not FAT, 2:Not a BR, 3:Disk error */ |
|
|
1983 FATFS *fs, /* File system object */ |
|
|
1984 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ |
|
|
1985 ) |
|
|
1986 { |
|
|
1987 if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */ |
|
|
1988 return 3; |
|
|
1989 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */ |
|
|
1990 return 2; |
|
|
1991 |
|
|
1992 if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ |
|
|
1993 return 0; |
|
|
1994 if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) |
|
|
1995 return 0; |
|
|
1996 |
|
|
1997 return 1; |
|
|
1998 } |
|
|
1999 |
|
|
2000 |
|
|
2001 |
|
|
2002 |
|
|
2003 /*-----------------------------------------------------------------------*/ |
|
|
2004 /* Check if the file system object is valid or not */ |
|
|
2005 /*-----------------------------------------------------------------------*/ |
|
|
2006 |
|
|
2007 static |
|
|
2008 FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */ |
|
|
2009 const TCHAR **path, /* Pointer to pointer to the path name (drive number) */ |
|
|
2010 FATFS **rfs, /* Pointer to pointer to the found file system object */ |
|
|
2011 BYTE chk_wp /* !=0: Check media write protection for write access */ |
|
|
2012 ) |
|
|
2013 { |
|
|
2014 BYTE fmt, b, pi, *tbl; |
|
|
2015 UINT vol; |
|
|
2016 DSTATUS stat; |
|
|
2017 DWORD bsect, fasize, tsect, sysect, nclst, szbfat; |
|
|
2018 WORD nrsv; |
|
|
2019 const TCHAR *p = *path; |
|
|
2020 FATFS *fs; |
|
|
2021 |
|
|
2022 /* Get logical drive number from the path name */ |
|
|
2023 vol = p[0] - '0'; /* Is there a drive number? */ |
|
|
2024 if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */ |
|
|
2025 p += 2; *path = p; /* Return pointer to the path name */ |
|
|
2026 } else { /* No drive number is given */ |
|
|
2027 #if _FS_RPATH |
|
|
2028 vol = CurrVol; /* Use current drive */ |
|
|
2029 #else |
|
|
2030 vol = 0; /* Use drive 0 */ |
|
|
2031 #endif |
|
|
2032 } |
|
|
2033 |
|
|
2034 /* Check if the file system object is valid or not */ |
|
|
2035 if (vol >= _VOLUMES) /* Is the drive number valid? */ |
|
|
2036 return FR_INVALID_DRIVE; |
|
|
2037 *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */ |
|
|
2038 if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */ |
|
|
2039 |
|
|
2040 ENTER_FF(fs); /* Lock file system */ |
|
|
2041 |
|
|
2042 if (fs->fs_type) { /* If the logical drive has been mounted */ |
|
|
2043 stat = disk_status(fs->drv); |
|
|
2044 if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */ |
|
|
2045 if (!_FS_READONLY && chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ |
|
|
2046 return FR_WRITE_PROTECTED; |
|
|
2047 return FR_OK; /* The file system object is valid */ |
|
|
2048 } |
|
|
2049 } |
|
|
2050 |
|
|
2051 /* The file system object is not valid. */ |
|
|
2052 /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */ |
|
|
2053 |
|
|
2054 fs->fs_type = 0; /* Clear the file system object */ |
|
|
2055 fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */ |
|
|
2056 stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */ |
|
|
2057 if (stat & STA_NOINIT) /* Check if the initialization succeeded */ |
|
|
2058 return FR_NOT_READY; /* Failed to initialize due to no media or hard error */ |
|
|
2059 if (!_FS_READONLY && chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */ |
|
|
2060 return FR_WRITE_PROTECTED; |
|
|
2061 #if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */ |
|
|
2062 if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK) |
|
|
2063 return FR_DISK_ERR; |
|
|
2064 #endif |
|
|
2065 /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */ |
|
|
2066 fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */ |
|
|
2067 if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */ |
|
|
2068 if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */ |
|
|
2069 /* Check the partition listed in the partition table */ |
|
|
2070 pi = LD2PT(vol); |
|
|
2071 if (pi) pi--; |
|
|
2072 tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */ |
|
|
2073 if (tbl[4]) { /* Is the partition existing? */ |
|
|
2074 bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */ |
|
|
2075 fmt = check_fs(fs, bsect); /* Check the partition */ |
|
|
2076 } |
|
|
2077 } |
|
|
2078 if (fmt == 3) return FR_DISK_ERR; |
|
|
2079 if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */ |
|
|
2080 |
|
|
2081 /* An FAT volume is found. Following code initializes the file system object */ |
|
|
2082 |
|
|
2083 if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */ |
|
|
2084 return FR_NO_FILESYSTEM; |
|
|
2085 |
|
|
2086 fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */ |
|
|
2087 if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32); |
|
|
2088 fs->fsize = fasize; |
|
|
2089 |
|
|
2090 fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */ |
|
|
2091 if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ |
|
|
2092 fasize *= b; /* Number of sectors for FAT area */ |
|
|
2093 |
|
|
2094 fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ |
|
|
2095 if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */ |
|
|
2096 |
|
|
2097 fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */ |
|
|
2098 if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */ |
|
|
2099 |
|
|
2100 tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */ |
|
|
2101 if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32); |
|
|
2102 |
|
|
2103 nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ |
|
|
2104 if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */ |
|
|
2105 |
|
|
2106 /* Determine the FAT sub type */ |
|
|
2107 sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */ |
|
|
2108 if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
|
|
2109 nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ |
|
|
2110 if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
|
|
2111 fmt = FS_FAT12; |
|
|
2112 if (nclst >= MIN_FAT16) fmt = FS_FAT16; |
|
|
2113 if (nclst >= MIN_FAT32) fmt = FS_FAT32; |
|
|
2114 |
|
|
2115 /* Boundaries and Limits */ |
|
|
2116 fs->n_fatent = nclst + 2; /* Number of FAT entries */ |
|
|
2117 fs->database = bsect + sysect; /* Data start sector */ |
|
|
2118 fs->fatbase = bsect + nrsv; /* FAT start sector */ |
|
|
2119 if (fmt == FS_FAT32) { |
|
|
2120 if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ |
|
|
2121 fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */ |
|
|
2122 szbfat = fs->n_fatent * 4; /* (Required FAT size) */ |
|
|
2123 } else { |
|
|
2124 if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ |
|
|
2125 fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ |
|
|
2126 szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */ |
|
|
2127 fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); |
|
|
2128 } |
|
|
2129 if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */ |
|
|
2130 return FR_NO_FILESYSTEM; |
|
|
2131 |
|
|
2132 #if !_FS_READONLY |
|
|
2133 /* Initialize cluster allocation information */ |
|
|
2134 fs->free_clust = 0xFFFFFFFF; |
|
|
2135 fs->last_clust = 0; |
|
|
2136 |
|
|
2137 /* Get fsinfo if available */ |
|
|
2138 if (fmt == FS_FAT32) { |
|
|
2139 fs->fsi_flag = 0; |
|
|
2140 fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo); |
|
|
2141 if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK && |
|
|
2142 LD_WORD(fs->win+BS_55AA) == 0xAA55 && |
|
|
2143 LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 && |
|
|
2144 LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) { |
|
|
2145 fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free); |
|
|
2146 fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count); |
|
|
2147 } |
|
|
2148 } |
|
|
2149 #endif |
|
|
2150 fs->fs_type = fmt; /* FAT sub-type */ |
|
|
2151 fs->id = ++Fsid; /* File system mount ID */ |
|
|
2152 fs->winsect = 0; /* Invalidate sector cache */ |
|
|
2153 fs->wflag = 0; |
|
|
2154 #if _FS_RPATH |
|
|
2155 fs->cdir = 0; /* Current directory (root dir) */ |
|
|
2156 #endif |
|
|
2157 #if _FS_SHARE /* Clear file lock semaphores */ |
|
|
2158 clear_lock(fs); |
|
|
2159 #endif |
|
|
2160 |
|
|
2161 return FR_OK; |
|
|
2162 } |
|
|
2163 |
|
|
2164 |
|
|
2165 |
|
|
2166 |
|
|
2167 /*-----------------------------------------------------------------------*/ |
|
|
2168 /* Check if the file/dir object is valid or not */ |
|
|
2169 /*-----------------------------------------------------------------------*/ |
|
|
2170 |
|
|
2171 static |
|
|
2172 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ |
|
|
2173 FATFS *fs, /* Pointer to the file system object */ |
|
|
2174 WORD id /* Member id of the target object to be checked */ |
|
|
2175 ) |
|
|
2176 { |
|
|
2177 if (!fs || !fs->fs_type || fs->id != id) |
|
|
2178 return FR_INVALID_OBJECT; |
|
|
2179 |
|
|
2180 ENTER_FF(fs); /* Lock file system */ |
|
|
2181 |
|
|
2182 if (disk_status(fs->drv) & STA_NOINIT) |
|
|
2183 return FR_NOT_READY; |
|
|
2184 |
|
|
2185 return FR_OK; |
|
|
2186 } |
|
|
2187 |
|
|
2188 |
|
|
2189 |
|
|
2190 |
|
|
2191 /*-------------------------------------------------------------------------- |
|
|
2192 |
|
|
2193 Public Functions |
|
|
2194 |
|
|
2195 --------------------------------------------------------------------------*/ |
|
|
2196 |
|
|
2197 |
|
|
2198 |
|
|
2199 /*-----------------------------------------------------------------------*/ |
|
|
2200 /* Mount/Unmount a Logical Drive */ |
|
|
2201 /*-----------------------------------------------------------------------*/ |
|
|
2202 |
|
|
2203 FRESULT f_mount ( |
|
|
2204 BYTE vol, /* Logical drive number to be mounted/unmounted */ |
|
|
2205 FATFS *fs /* Pointer to new file system object (NULL for unmount)*/ |
|
|
2206 ) |
|
|
2207 { |
|
|
2208 FATFS *rfs; |
|
|
2209 |
|
|
2210 |
|
|
2211 if (vol >= _VOLUMES) /* Check if the drive number is valid */ |
|
|
2212 return FR_INVALID_DRIVE; |
|
|
2213 rfs = FatFs[vol]; /* Get current fs object */ |
|
|
2214 |
|
|
2215 if (rfs) { |
|
|
2216 #if _FS_SHARE |
|
|
2217 clear_lock(rfs); |
|
|
2218 #endif |
|
|
2219 #if _FS_REENTRANT /* Discard sync object of the current volume */ |
|
|
2220 if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR; |
|
|
2221 #endif |
|
|
2222 rfs->fs_type = 0; /* Clear old fs object */ |
|
|
2223 } |
|
|
2224 |
|
|
2225 if (fs) { |
|
|
2226 fs->fs_type = 0; /* Clear new fs object */ |
|
|
2227 #if _FS_REENTRANT /* Create sync object for the new volume */ |
|
|
2228 if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR; |
|
|
2229 #endif |
|
|
2230 } |
|
|
2231 FatFs[vol] = fs; /* Register new fs object */ |
|
|
2232 |
|
|
2233 return FR_OK; |
|
|
2234 } |
|
|
2235 |
|
|
2236 |
|
|
2237 |
|
|
2238 |
|
|
2239 /*-----------------------------------------------------------------------*/ |
|
|
2240 /* Open or Create a File */ |
|
|
2241 /*-----------------------------------------------------------------------*/ |
|
|
2242 |
|
|
2243 FRESULT f_open ( |
|
|
2244 FIL *fp, /* Pointer to the blank file object */ |
|
|
2245 const TCHAR *path, /* Pointer to the file name */ |
|
|
2246 BYTE mode /* Access mode and file open mode flags */ |
|
|
2247 ) |
|
|
2248 { |
|
|
2249 FRESULT res; |
|
|
2250 DIR dj; |
|
|
2251 BYTE *dir; |
|
|
2252 DEF_NAMEBUF; |
|
|
2253 |
|
|
2254 |
|
|
2255 fp->fs = 0; /* Clear file object */ |
|
|
2256 |
|
|
2257 #if !_FS_READONLY |
|
|
2258 mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW; |
|
|
2259 res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ)); |
|
|
2260 #else |
|
|
2261 mode &= FA_READ; |
|
|
2262 res = chk_mounted(&path, &dj.fs, 0); |
|
|
2263 #endif |
|
|
2264 INIT_BUF(dj); |
|
|
2265 if (res == FR_OK) |
|
|
2266 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
2267 dir = dj.dir; |
|
|
2268 |
|
|
2269 #if !_FS_READONLY /* R/W configuration */ |
|
|
2270 if (res == FR_OK) { |
|
|
2271 if (!dir) /* Current dir itself */ |
|
|
2272 res = FR_INVALID_NAME; |
|
|
2273 #if _FS_SHARE |
|
|
2274 else |
|
|
2275 res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); |
|
|
2276 #endif |
|
|
2277 } |
|
|
2278 /* Create or Open a file */ |
|
|
2279 if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) { |
|
|
2280 DWORD dw, cl; |
|
|
2281 |
|
|
2282 if (res != FR_OK) { /* No file, create new */ |
|
|
2283 if (res == FR_NO_FILE) /* There is no file to open, create a new entry */ |
|
|
2284 #if _FS_SHARE |
|
|
2285 res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; |
|
|
2286 #else |
|
|
2287 res = dir_register(&dj); |
|
|
2288 #endif |
|
|
2289 mode |= FA_CREATE_ALWAYS; /* File is created */ |
|
|
2290 dir = dj.dir; /* New entry */ |
|
|
2291 } |
|
|
2292 else { /* Any object is already existing */ |
|
|
2293 if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */ |
|
|
2294 res = FR_DENIED; |
|
|
2295 } else { |
|
|
2296 if (mode & FA_CREATE_NEW) /* Cannot create as new file */ |
|
|
2297 res = FR_EXIST; |
|
|
2298 } |
|
|
2299 } |
|
|
2300 if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ |
|
|
2301 dw = get_fattime(); /* Created time */ |
|
|
2302 ST_DWORD(dir+DIR_CrtTime, dw); |
|
|
2303 dir[DIR_Attr] = 0; /* Reset attribute */ |
|
|
2304 ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ |
|
|
2305 cl = LD_CLUST(dir); /* Get start cluster */ |
|
|
2306 ST_CLUST(dir, 0); /* cluster = 0 */ |
|
|
2307 dj.fs->wflag = 1; |
|
|
2308 if (cl) { /* Remove the cluster chain if exist */ |
|
|
2309 dw = dj.fs->winsect; |
|
|
2310 res = remove_chain(dj.fs, cl); |
|
|
2311 if (res == FR_OK) { |
|
|
2312 dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */ |
|
|
2313 res = move_window(dj.fs, dw); |
|
|
2314 } |
|
|
2315 } |
|
|
2316 } |
|
|
2317 } |
|
|
2318 else { /* Open an existing file */ |
|
|
2319 if (res == FR_OK) { /* Follow succeeded */ |
|
|
2320 if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */ |
|
|
2321 res = FR_NO_FILE; |
|
|
2322 } else { |
|
|
2323 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ |
|
|
2324 res = FR_DENIED; |
|
|
2325 } |
|
|
2326 } |
|
|
2327 } |
|
|
2328 if (res == FR_OK) { |
|
|
2329 if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */ |
|
|
2330 mode |= FA__WRITTEN; |
|
|
2331 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ |
|
|
2332 fp->dir_ptr = dir; |
|
|
2333 #if _FS_SHARE |
|
|
2334 fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); |
|
|
2335 if (!fp->lockid) res = FR_INT_ERR; |
|
|
2336 #endif |
|
|
2337 } |
|
|
2338 |
|
|
2339 #else /* R/O configuration */ |
|
|
2340 if (res == FR_OK) { /* Follow succeeded */ |
|
|
2341 if (!dir) { /* Current dir itself */ |
|
|
2342 res = FR_INVALID_NAME; |
|
|
2343 } else { |
|
|
2344 if (dir[DIR_Attr] & AM_DIR) /* It is a directory */ |
|
|
2345 res = FR_NO_FILE; |
|
|
2346 } |
|
|
2347 } |
|
|
2348 #endif |
|
|
2349 FREE_BUF(); |
|
|
2350 |
|
|
2351 if (res == FR_OK) { |
|
|
2352 fp->flag = mode; /* File access mode */ |
|
|
2353 fp->sclust = LD_CLUST(dir); /* File start cluster */ |
|
|
2354 fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ |
|
|
2355 fp->fptr = 0; /* File pointer */ |
|
|
2356 fp->dsect = 0; |
|
|
2357 #if _USE_FASTSEEK |
|
|
2358 fp->cltbl = 0; /* Normal seek mode */ |
|
|
2359 #endif |
|
|
2360 fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */ |
|
|
2361 } |
|
|
2362 |
|
|
2363 LEAVE_FF(dj.fs, res); |
|
|
2364 } |
|
|
2365 |
|
|
2366 |
|
|
2367 |
|
|
2368 |
|
|
2369 /*-----------------------------------------------------------------------*/ |
|
|
2370 /* Read File */ |
|
|
2371 /*-----------------------------------------------------------------------*/ |
|
|
2372 |
|
|
2373 FRESULT f_read ( |
|
|
2374 FIL *fp, /* Pointer to the file object */ |
|
|
2375 void *buff, /* Pointer to data buffer */ |
|
|
2376 UINT btr, /* Number of bytes to read */ |
|
|
2377 UINT *br /* Pointer to number of bytes read */ |
|
|
2378 ) |
|
|
2379 { |
|
|
2380 FRESULT res; |
|
|
2381 DWORD clst, sect, remain; |
|
|
2382 UINT rcnt, cc; |
|
|
2383 BYTE csect, *rbuff = buff; |
|
|
2384 |
|
|
2385 |
|
|
2386 *br = 0; /* Initialize byte counter */ |
|
|
2387 |
|
|
2388 res = validate(fp->fs, fp->id); /* Check validity */ |
|
|
2389 if (res != FR_OK) LEAVE_FF(fp->fs, res); |
|
|
2390 if (fp->flag & FA__ERROR) /* Aborted file? */ |
|
|
2391 LEAVE_FF(fp->fs, FR_INT_ERR); |
|
|
2392 if (!(fp->flag & FA_READ)) /* Check access mode */ |
|
|
2393 LEAVE_FF(fp->fs, FR_DENIED); |
|
|
2394 remain = fp->fsize - fp->fptr; |
|
|
2395 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ |
|
|
2396 |
|
|
2397 for ( ; btr; /* Repeat until all data read */ |
|
|
2398 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { |
|
|
2399 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
|
|
2400 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
|
|
2401 if (!csect) { /* On the cluster boundary? */ |
|
|
2402 if (fp->fptr == 0) { /* On the top of the file? */ |
|
|
2403 clst = fp->sclust; /* Follow from the origin */ |
|
|
2404 } else { /* Middle or end of the file */ |
|
|
2405 #if _USE_FASTSEEK |
|
|
2406 if (fp->cltbl) |
|
|
2407 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ |
|
|
2408 else |
|
|
2409 #endif |
|
|
2410 clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */ |
|
|
2411 } |
|
|
2412 if (clst < 2) ABORT(fp->fs, FR_INT_ERR); |
|
|
2413 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2414 fp->clust = clst; /* Update current cluster */ |
|
|
2415 } |
|
|
2416 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ |
|
|
2417 if (!sect) ABORT(fp->fs, FR_INT_ERR); |
|
|
2418 sect += csect; |
|
|
2419 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ |
|
|
2420 if (cc) { /* Read maximum contiguous sectors directly */ |
|
|
2421 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ |
|
|
2422 cc = fp->fs->csize - csect; |
|
|
2423 if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK) |
|
|
2424 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2425 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */ |
|
|
2426 #if _FS_TINY |
|
|
2427 if (fp->fs->wflag && fp->fs->winsect - sect < cc) |
|
|
2428 mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); |
|
|
2429 #else |
|
|
2430 if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) |
|
|
2431 mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs)); |
|
|
2432 #endif |
|
|
2433 #endif |
|
|
2434 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ |
|
|
2435 continue; |
|
|
2436 } |
|
|
2437 #if !_FS_TINY |
|
|
2438 if (fp->dsect != sect) { /* Load data sector if not in cache */ |
|
|
2439 #if !_FS_READONLY |
|
|
2440 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ |
|
|
2441 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
|
|
2442 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2443 fp->flag &= ~FA__DIRTY; |
|
|
2444 } |
|
|
2445 #endif |
|
|
2446 if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */ |
|
|
2447 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2448 } |
|
|
2449 #endif |
|
|
2450 fp->dsect = sect; |
|
|
2451 } |
|
|
2452 rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */ |
|
|
2453 if (rcnt > btr) rcnt = btr; |
|
|
2454 #if _FS_TINY |
|
|
2455 if (move_window(fp->fs, fp->dsect)) /* Move sector window */ |
|
|
2456 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2457 mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ |
|
|
2458 #else |
|
|
2459 mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ |
|
|
2460 #endif |
|
|
2461 } |
|
|
2462 |
|
|
2463 LEAVE_FF(fp->fs, FR_OK); |
|
|
2464 } |
|
|
2465 |
|
|
2466 |
|
|
2467 |
|
|
2468 |
|
|
2469 #if !_FS_READONLY |
|
|
2470 /*-----------------------------------------------------------------------*/ |
|
|
2471 /* Write File */ |
|
|
2472 /*-----------------------------------------------------------------------*/ |
|
|
2473 |
|
|
2474 FRESULT f_write ( |
|
|
2475 FIL *fp, /* Pointer to the file object */ |
|
|
2476 const void *buff, /* Pointer to the data to be written */ |
|
|
2477 UINT btw, /* Number of bytes to write */ |
|
|
2478 UINT *bw /* Pointer to number of bytes written */ |
|
|
2479 ) |
|
|
2480 { |
|
|
2481 FRESULT res; |
|
|
2482 DWORD clst, sect; |
|
|
2483 UINT wcnt, cc; |
|
|
2484 const BYTE *wbuff = buff; |
|
|
2485 BYTE csect; |
|
|
2486 |
|
|
2487 |
|
|
2488 *bw = 0; /* Initialize byte counter */ |
|
|
2489 |
|
|
2490 res = validate(fp->fs, fp->id); /* Check validity */ |
|
|
2491 if (res != FR_OK) LEAVE_FF(fp->fs, res); |
|
|
2492 if (fp->flag & FA__ERROR) /* Aborted file? */ |
|
|
2493 LEAVE_FF(fp->fs, FR_INT_ERR); |
|
|
2494 if (!(fp->flag & FA_WRITE)) /* Check access mode */ |
|
|
2495 LEAVE_FF(fp->fs, FR_DENIED); |
|
|
2496 if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */ |
|
|
2497 |
|
|
2498 for ( ; btw; /* Repeat until all data written */ |
|
|
2499 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { |
|
|
2500 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
|
|
2501 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
|
|
2502 if (!csect) { /* On the cluster boundary? */ |
|
|
2503 if (fp->fptr == 0) { /* On the top of the file? */ |
|
|
2504 clst = fp->sclust; /* Follow from the origin */ |
|
|
2505 if (clst == 0) /* When no cluster is allocated, */ |
|
|
2506 fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */ |
|
|
2507 } else { /* Middle or end of the file */ |
|
|
2508 #if _USE_FASTSEEK |
|
|
2509 if (fp->cltbl) |
|
|
2510 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ |
|
|
2511 else |
|
|
2512 #endif |
|
|
2513 clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */ |
|
|
2514 } |
|
|
2515 if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ |
|
|
2516 if (clst == 1) ABORT(fp->fs, FR_INT_ERR); |
|
|
2517 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2518 fp->clust = clst; /* Update current cluster */ |
|
|
2519 } |
|
|
2520 #if _FS_TINY |
|
|
2521 if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */ |
|
|
2522 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2523 #else |
|
|
2524 if (fp->flag & FA__DIRTY) { /* Write-back sector cache */ |
|
|
2525 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
|
|
2526 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2527 fp->flag &= ~FA__DIRTY; |
|
|
2528 } |
|
|
2529 #endif |
|
|
2530 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ |
|
|
2531 if (!sect) ABORT(fp->fs, FR_INT_ERR); |
|
|
2532 sect += csect; |
|
|
2533 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ |
|
|
2534 if (cc) { /* Write maximum contiguous sectors directly */ |
|
|
2535 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ |
|
|
2536 cc = fp->fs->csize - csect; |
|
|
2537 if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK) |
|
|
2538 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2539 #if _FS_TINY |
|
|
2540 if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ |
|
|
2541 mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs)); |
|
|
2542 fp->fs->wflag = 0; |
|
|
2543 } |
|
|
2544 #else |
|
|
2545 if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ |
|
|
2546 mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs)); |
|
|
2547 fp->flag &= ~FA__DIRTY; |
|
|
2548 } |
|
|
2549 #endif |
|
|
2550 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ |
|
|
2551 continue; |
|
|
2552 } |
|
|
2553 #if _FS_TINY |
|
|
2554 if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */ |
|
|
2555 if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2556 fp->fs->winsect = sect; |
|
|
2557 } |
|
|
2558 #else |
|
|
2559 if (fp->dsect != sect) { /* Fill sector cache with file data */ |
|
|
2560 if (fp->fptr < fp->fsize && |
|
|
2561 disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) |
|
|
2562 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2563 } |
|
|
2564 #endif |
|
|
2565 fp->dsect = sect; |
|
|
2566 } |
|
|
2567 wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */ |
|
|
2568 if (wcnt > btw) wcnt = btw; |
|
|
2569 #if _FS_TINY |
|
|
2570 if (move_window(fp->fs, fp->dsect)) /* Move sector window */ |
|
|
2571 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2572 mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ |
|
|
2573 fp->fs->wflag = 1; |
|
|
2574 #else |
|
|
2575 mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ |
|
|
2576 fp->flag |= FA__DIRTY; |
|
|
2577 #endif |
|
|
2578 } |
|
|
2579 |
|
|
2580 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ |
|
|
2581 fp->flag |= FA__WRITTEN; /* Set file change flag */ |
|
|
2582 |
|
|
2583 LEAVE_FF(fp->fs, FR_OK); |
|
|
2584 } |
|
|
2585 |
|
|
2586 |
|
|
2587 |
|
|
2588 |
|
|
2589 /*-----------------------------------------------------------------------*/ |
|
|
2590 /* Synchronize the File Object */ |
|
|
2591 /*-----------------------------------------------------------------------*/ |
|
|
2592 |
|
|
2593 FRESULT f_sync ( |
|
|
2594 FIL *fp /* Pointer to the file object */ |
|
|
2595 ) |
|
|
2596 { |
|
|
2597 FRESULT res; |
|
|
2598 DWORD tim; |
|
|
2599 BYTE *dir; |
|
|
2600 |
|
|
2601 |
|
|
2602 res = validate(fp->fs, fp->id); /* Check validity of the object */ |
|
|
2603 if (res == FR_OK) { |
|
|
2604 if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ |
|
|
2605 #if !_FS_TINY /* Write-back dirty buffer */ |
|
|
2606 if (fp->flag & FA__DIRTY) { |
|
|
2607 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
|
|
2608 LEAVE_FF(fp->fs, FR_DISK_ERR); |
|
|
2609 fp->flag &= ~FA__DIRTY; |
|
|
2610 } |
|
|
2611 #endif |
|
|
2612 /* Update the directory entry */ |
|
|
2613 res = move_window(fp->fs, fp->dir_sect); |
|
|
2614 if (res == FR_OK) { |
|
|
2615 dir = fp->dir_ptr; |
|
|
2616 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ |
|
|
2617 ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */ |
|
|
2618 ST_CLUST(dir, fp->sclust); /* Update start cluster */ |
|
|
2619 tim = get_fattime(); /* Update updated time */ |
|
|
2620 ST_DWORD(dir+DIR_WrtTime, tim); |
|
|
2621 fp->flag &= ~FA__WRITTEN; |
|
|
2622 fp->fs->wflag = 1; |
|
|
2623 res = sync(fp->fs); |
|
|
2624 } |
|
|
2625 } |
|
|
2626 } |
|
|
2627 |
|
|
2628 LEAVE_FF(fp->fs, res); |
|
|
2629 } |
|
|
2630 |
|
|
2631 #endif /* !_FS_READONLY */ |
|
|
2632 |
|
|
2633 |
|
|
2634 |
|
|
2635 |
|
|
2636 /*-----------------------------------------------------------------------*/ |
|
|
2637 /* Close File */ |
|
|
2638 /*-----------------------------------------------------------------------*/ |
|
|
2639 |
|
|
2640 FRESULT f_close ( |
|
|
2641 FIL *fp /* Pointer to the file object to be closed */ |
|
|
2642 ) |
|
|
2643 { |
|
|
2644 FRESULT res; |
|
|
2645 |
|
|
2646 #if _FS_READONLY |
|
|
2647 FATFS *fs = fp->fs; |
|
|
2648 res = validate(fs, fp->id); |
|
|
2649 if (res == FR_OK) fp->fs = 0; /* Discard file object */ |
|
|
2650 LEAVE_FF(fs, res); |
|
|
2651 |
|
|
2652 #else |
|
|
2653 res = f_sync(fp); /* Flush cached data */ |
|
|
2654 #if _FS_SHARE |
|
|
2655 if (res == FR_OK) { /* Decrement open counter */ |
|
|
2656 #if _FS_REENTRANT |
|
|
2657 res = validate(fp->fs, fp->id); |
|
|
2658 if (res == FR_OK) { |
|
|
2659 res = dec_lock(fp->lockid); |
|
|
2660 unlock_fs(fp->fs, FR_OK); |
|
|
2661 } |
|
|
2662 #else |
|
|
2663 res = dec_lock(fp->lockid); |
|
|
2664 #endif |
|
|
2665 } |
|
|
2666 #endif |
|
|
2667 if (res == FR_OK) fp->fs = 0; /* Discard file object */ |
|
|
2668 return res; |
|
|
2669 #endif |
|
|
2670 } |
|
|
2671 |
|
|
2672 |
|
|
2673 |
|
|
2674 |
|
|
2675 /*-----------------------------------------------------------------------*/ |
|
|
2676 /* Current Drive/Directory Handlings */ |
|
|
2677 /*-----------------------------------------------------------------------*/ |
|
|
2678 |
|
|
2679 #if _FS_RPATH >= 1 |
|
|
2680 |
|
|
2681 FRESULT f_chdrive ( |
|
|
2682 BYTE drv /* Drive number */ |
|
|
2683 ) |
|
|
2684 { |
|
|
2685 if (drv >= _VOLUMES) return FR_INVALID_DRIVE; |
|
|
2686 |
|
|
2687 CurrVol = drv; |
|
|
2688 |
|
|
2689 return FR_OK; |
|
|
2690 } |
|
|
2691 |
|
|
2692 |
|
|
2693 |
|
|
2694 FRESULT f_chdir ( |
|
|
2695 const TCHAR *path /* Pointer to the directory path */ |
|
|
2696 ) |
|
|
2697 { |
|
|
2698 FRESULT res; |
|
|
2699 DIR dj; |
|
|
2700 DEF_NAMEBUF; |
|
|
2701 |
|
|
2702 |
|
|
2703 res = chk_mounted(&path, &dj.fs, 0); |
|
|
2704 if (res == FR_OK) { |
|
|
2705 INIT_BUF(dj); |
|
|
2706 res = follow_path(&dj, path); /* Follow the path */ |
|
|
2707 FREE_BUF(); |
|
|
2708 if (res == FR_OK) { /* Follow completed */ |
|
|
2709 if (!dj.dir) { |
|
|
2710 dj.fs->cdir = dj.sclust; /* Start directory itself */ |
|
|
2711 } else { |
|
|
2712 if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */ |
|
|
2713 dj.fs->cdir = LD_CLUST(dj.dir); |
|
|
2714 else |
|
|
2715 res = FR_NO_PATH; /* Reached but a file */ |
|
|
2716 } |
|
|
2717 } |
|
|
2718 if (res == FR_NO_FILE) res = FR_NO_PATH; |
|
|
2719 } |
|
|
2720 |
|
|
2721 LEAVE_FF(dj.fs, res); |
|
|
2722 } |
|
|
2723 |
|
|
2724 |
|
|
2725 #if _FS_RPATH >= 2 |
|
|
2726 FRESULT f_getcwd ( |
|
|
2727 TCHAR *path, /* Pointer to the directory path */ |
|
|
2728 UINT sz_path /* Size of path */ |
|
|
2729 ) |
|
|
2730 { |
|
|
2731 FRESULT res; |
|
|
2732 DIR dj; |
|
|
2733 UINT i, n; |
|
|
2734 DWORD ccl; |
|
|
2735 TCHAR *tp; |
|
|
2736 FILINFO fno; |
|
|
2737 DEF_NAMEBUF; |
|
|
2738 |
|
|
2739 |
|
|
2740 *path = 0; |
|
|
2741 res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */ |
|
|
2742 if (res == FR_OK) { |
|
|
2743 INIT_BUF(dj); |
|
|
2744 i = sz_path; /* Bottom of buffer (dir stack base) */ |
|
|
2745 dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */ |
|
|
2746 while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */ |
|
|
2747 res = dir_sdi(&dj, 1); /* Get parent dir */ |
|
|
2748 if (res != FR_OK) break; |
|
|
2749 res = dir_read(&dj); |
|
|
2750 if (res != FR_OK) break; |
|
|
2751 dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */ |
|
|
2752 res = dir_sdi(&dj, 0); |
|
|
2753 if (res != FR_OK) break; |
|
|
2754 do { /* Find the entry links to the child dir */ |
|
|
2755 res = dir_read(&dj); |
|
|
2756 if (res != FR_OK) break; |
|
|
2757 if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */ |
|
|
2758 res = dir_next(&dj, 0); |
|
|
2759 } while (res == FR_OK); |
|
|
2760 if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */ |
|
|
2761 if (res != FR_OK) break; |
|
|
2762 #if _USE_LFN |
|
|
2763 fno.lfname = path; |
|
|
2764 fno.lfsize = i; |
|
|
2765 #endif |
|
|
2766 get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */ |
|
|
2767 tp = fno.fname; |
|
|
2768 if (_USE_LFN && *path) tp = path; |
|
|
2769 for (n = 0; tp[n]; n++) ; |
|
|
2770 if (i < n + 3) { |
|
|
2771 res = FR_NOT_ENOUGH_CORE; break; |
|
|
2772 } |
|
|
2773 while (n) path[--i] = tp[--n]; |
|
|
2774 path[--i] = '/'; |
|
|
2775 } |
|
|
2776 tp = path; |
|
|
2777 if (res == FR_OK) { |
|
|
2778 *tp++ = '0' + CurrVol; /* Put drive number */ |
|
|
2779 *tp++ = ':'; |
|
|
2780 if (i == sz_path) { /* Root-dir */ |
|
|
2781 *tp++ = '/'; |
|
|
2782 } else { /* Sub-dir */ |
|
|
2783 do /* Add stacked path str */ |
|
|
2784 *tp++ = path[i++]; |
|
|
2785 while (i < sz_path); |
|
|
2786 } |
|
|
2787 } |
|
|
2788 *tp = 0; |
|
|
2789 FREE_BUF(); |
|
|
2790 } |
|
|
2791 |
|
|
2792 LEAVE_FF(dj.fs, res); |
|
|
2793 } |
|
|
2794 #endif /* _FS_RPATH >= 2 */ |
|
|
2795 #endif /* _FS_RPATH >= 1 */ |
|
|
2796 |
|
|
2797 |
|
|
2798 |
|
|
2799 #if _FS_MINIMIZE <= 2 |
|
|
2800 /*-----------------------------------------------------------------------*/ |
|
|
2801 /* Seek File R/W Pointer */ |
|
|
2802 /*-----------------------------------------------------------------------*/ |
|
|
2803 |
|
|
2804 FRESULT f_lseek ( |
|
|
2805 FIL *fp, /* Pointer to the file object */ |
|
|
2806 DWORD ofs /* File pointer from top of file */ |
|
|
2807 ) |
|
|
2808 { |
|
|
2809 FRESULT res; |
|
|
2810 |
|
|
2811 |
|
|
2812 res = validate(fp->fs, fp->id); /* Check validity of the object */ |
|
|
2813 if (res != FR_OK) LEAVE_FF(fp->fs, res); |
|
|
2814 if (fp->flag & FA__ERROR) /* Check abort flag */ |
|
|
2815 LEAVE_FF(fp->fs, FR_INT_ERR); |
|
|
2816 |
|
|
2817 #if _USE_FASTSEEK |
|
|
2818 if (fp->cltbl) { /* Fast seek */ |
|
|
2819 DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; |
|
|
2820 |
|
|
2821 if (ofs == CREATE_LINKMAP) { /* Create CLMT */ |
|
|
2822 tbl = fp->cltbl; |
|
|
2823 tlen = *tbl++; ulen = 2; /* Given table size and required table size */ |
|
|
2824 cl = fp->sclust; /* Top of the chain */ |
|
|
2825 if (cl) { |
|
|
2826 do { |
|
|
2827 /* Get a fragment */ |
|
|
2828 tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */ |
|
|
2829 do { |
|
|
2830 pcl = cl; ncl++; |
|
|
2831 cl = get_fat(fp->fs, cl); |
|
|
2832 if (cl <= 1) ABORT(fp->fs, FR_INT_ERR); |
|
|
2833 if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2834 } while (cl == pcl + 1); |
|
|
2835 if (ulen <= tlen) { /* Store the length and top of the fragment */ |
|
|
2836 *tbl++ = ncl; *tbl++ = tcl; |
|
|
2837 } |
|
|
2838 } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */ |
|
|
2839 } |
|
|
2840 *fp->cltbl = ulen; /* Number of items used */ |
|
|
2841 if (ulen <= tlen) |
|
|
2842 *tbl = 0; /* Terminate table */ |
|
|
2843 else |
|
|
2844 res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */ |
|
|
2845 |
|
|
2846 } else { /* Fast seek */ |
|
|
2847 if (ofs > fp->fsize) /* Clip offset at the file size */ |
|
|
2848 ofs = fp->fsize; |
|
|
2849 fp->fptr = ofs; /* Set file pointer */ |
|
|
2850 if (ofs) { |
|
|
2851 fp->clust = clmt_clust(fp, ofs - 1); |
|
|
2852 dsc = clust2sect(fp->fs, fp->clust); |
|
|
2853 if (!dsc) ABORT(fp->fs, FR_INT_ERR); |
|
|
2854 dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1); |
|
|
2855 if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */ |
|
|
2856 #if !_FS_TINY |
|
|
2857 #if !_FS_READONLY |
|
|
2858 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ |
|
|
2859 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
|
|
2860 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2861 fp->flag &= ~FA__DIRTY; |
|
|
2862 } |
|
|
2863 #endif |
|
|
2864 if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */ |
|
|
2865 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2866 #endif |
|
|
2867 fp->dsect = dsc; |
|
|
2868 } |
|
|
2869 } |
|
|
2870 } |
|
|
2871 } else |
|
|
2872 #endif |
|
|
2873 |
|
|
2874 /* Normal Seek */ |
|
|
2875 { |
|
|
2876 DWORD clst, bcs, nsect, ifptr; |
|
|
2877 |
|
|
2878 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ |
|
|
2879 #if !_FS_READONLY |
|
|
2880 && !(fp->flag & FA_WRITE) |
|
|
2881 #endif |
|
|
2882 ) ofs = fp->fsize; |
|
|
2883 |
|
|
2884 ifptr = fp->fptr; |
|
|
2885 fp->fptr = nsect = 0; |
|
|
2886 if (ofs) { |
|
|
2887 bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ |
|
|
2888 if (ifptr > 0 && |
|
|
2889 (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ |
|
|
2890 fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ |
|
|
2891 ofs -= fp->fptr; |
|
|
2892 clst = fp->clust; |
|
|
2893 } else { /* When seek to back cluster, */ |
|
|
2894 clst = fp->sclust; /* start from the first cluster */ |
|
|
2895 #if !_FS_READONLY |
|
|
2896 if (clst == 0) { /* If no cluster chain, create a new chain */ |
|
|
2897 clst = create_chain(fp->fs, 0); |
|
|
2898 if (clst == 1) ABORT(fp->fs, FR_INT_ERR); |
|
|
2899 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2900 fp->sclust = clst; |
|
|
2901 } |
|
|
2902 #endif |
|
|
2903 fp->clust = clst; |
|
|
2904 } |
|
|
2905 if (clst != 0) { |
|
|
2906 while (ofs > bcs) { /* Cluster following loop */ |
|
|
2907 #if !_FS_READONLY |
|
|
2908 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ |
|
|
2909 clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ |
|
|
2910 if (clst == 0) { /* When disk gets full, clip file size */ |
|
|
2911 ofs = bcs; break; |
|
|
2912 } |
|
|
2913 } else |
|
|
2914 #endif |
|
|
2915 clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ |
|
|
2916 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
2917 if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR); |
|
|
2918 fp->clust = clst; |
|
|
2919 fp->fptr += bcs; |
|
|
2920 ofs -= bcs; |
|
|
2921 } |
|
|
2922 fp->fptr += ofs; |
|
|
2923 if (ofs % SS(fp->fs)) { |
|
|
2924 nsect = clust2sect(fp->fs, clst); /* Current sector */ |
|
|
2925 if (!nsect) ABORT(fp->fs, FR_INT_ERR); |
|
|
2926 nsect += ofs / SS(fp->fs); |
|
|
2927 } |
|
|
2928 } |
|
|
2929 } |
|
|
2930 if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */ |
|
|
2931 #if !_FS_TINY |
|
|
2932 #if !_FS_READONLY |
|
|
2933 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ |
|
|
2934 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
|
|
2935 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2936 fp->flag &= ~FA__DIRTY; |
|
|
2937 } |
|
|
2938 #endif |
|
|
2939 if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */ |
|
|
2940 ABORT(fp->fs, FR_DISK_ERR); |
|
|
2941 #endif |
|
|
2942 fp->dsect = nsect; |
|
|
2943 } |
|
|
2944 #if !_FS_READONLY |
|
|
2945 if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */ |
|
|
2946 fp->fsize = fp->fptr; |
|
|
2947 fp->flag |= FA__WRITTEN; |
|
|
2948 } |
|
|
2949 #endif |
|
|
2950 } |
|
|
2951 |
|
|
2952 LEAVE_FF(fp->fs, res); |
|
|
2953 } |
|
|
2954 |
|
|
2955 |
|
|
2956 |
|
|
2957 #if _FS_MINIMIZE <= 1 |
|
|
2958 /*-----------------------------------------------------------------------*/ |
|
|
2959 /* Create a Directroy Object */ |
|
|
2960 /*-----------------------------------------------------------------------*/ |
|
|
2961 |
|
|
2962 FRESULT f_opendir ( |
|
|
2963 DIR *dj, /* Pointer to directory object to create */ |
|
|
2964 const TCHAR *path /* Pointer to the directory path */ |
|
|
2965 ) |
|
|
2966 { |
|
|
2967 FRESULT res; |
|
|
2968 DEF_NAMEBUF; |
|
|
2969 |
|
|
2970 |
|
|
2971 res = chk_mounted(&path, &dj->fs, 0); |
|
|
2972 if (res == FR_OK) { |
|
|
2973 INIT_BUF(*dj); |
|
|
2974 res = follow_path(dj, path); /* Follow the path to the directory */ |
|
|
2975 FREE_BUF(); |
|
|
2976 if (res == FR_OK) { /* Follow completed */ |
|
|
2977 if (dj->dir) { /* It is not the root dir */ |
|
|
2978 if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */ |
|
|
2979 dj->sclust = LD_CLUST(dj->dir); |
|
|
2980 } else { /* The object is not a directory */ |
|
|
2981 res = FR_NO_PATH; |
|
|
2982 } |
|
|
2983 } |
|
|
2984 if (res == FR_OK) { |
|
|
2985 dj->id = dj->fs->id; |
|
|
2986 res = dir_sdi(dj, 0); /* Rewind dir */ |
|
|
2987 } |
|
|
2988 } |
|
|
2989 if (res == FR_NO_FILE) res = FR_NO_PATH; |
|
|
2990 } |
|
|
2991 |
|
|
2992 LEAVE_FF(dj->fs, res); |
|
|
2993 } |
|
|
2994 |
|
|
2995 |
|
|
2996 |
|
|
2997 |
|
|
2998 /*-----------------------------------------------------------------------*/ |
|
|
2999 /* Read Directory Entry in Sequense */ |
|
|
3000 /*-----------------------------------------------------------------------*/ |
|
|
3001 |
|
|
3002 FRESULT f_readdir ( |
|
|
3003 DIR *dj, /* Pointer to the open directory object */ |
|
|
3004 FILINFO *fno /* Pointer to file information to return */ |
|
|
3005 ) |
|
|
3006 { |
|
|
3007 FRESULT res; |
|
|
3008 DEF_NAMEBUF; |
|
|
3009 |
|
|
3010 |
|
|
3011 res = validate(dj->fs, dj->id); /* Check validity of the object */ |
|
|
3012 if (res == FR_OK) { |
|
|
3013 if (!fno) { |
|
|
3014 res = dir_sdi(dj, 0); /* Rewind the directory object */ |
|
|
3015 } else { |
|
|
3016 INIT_BUF(*dj); |
|
|
3017 res = dir_read(dj); /* Read an directory item */ |
|
|
3018 if (res == FR_NO_FILE) { /* Reached end of dir */ |
|
|
3019 dj->sect = 0; |
|
|
3020 res = FR_OK; |
|
|
3021 } |
|
|
3022 if (res == FR_OK) { /* A valid entry is found */ |
|
|
3023 get_fileinfo(dj, fno); /* Get the object information */ |
|
|
3024 res = dir_next(dj, 0); /* Increment index for next */ |
|
|
3025 if (res == FR_NO_FILE) { |
|
|
3026 dj->sect = 0; |
|
|
3027 res = FR_OK; |
|
|
3028 } |
|
|
3029 } |
|
|
3030 FREE_BUF(); |
|
|
3031 } |
|
|
3032 } |
|
|
3033 |
|
|
3034 LEAVE_FF(dj->fs, res); |
|
|
3035 } |
|
|
3036 |
|
|
3037 |
|
|
3038 |
|
|
3039 #if _FS_MINIMIZE == 0 |
|
|
3040 /*-----------------------------------------------------------------------*/ |
|
|
3041 /* Get File Status */ |
|
|
3042 /*-----------------------------------------------------------------------*/ |
|
|
3043 |
|
|
3044 FRESULT f_stat ( |
|
|
3045 const TCHAR *path, /* Pointer to the file path */ |
|
|
3046 FILINFO *fno /* Pointer to file information to return */ |
|
|
3047 ) |
|
|
3048 { |
|
|
3049 FRESULT res; |
|
|
3050 DIR dj; |
|
|
3051 DEF_NAMEBUF; |
|
|
3052 |
|
|
3053 |
|
|
3054 res = chk_mounted(&path, &dj.fs, 0); |
|
|
3055 if (res == FR_OK) { |
|
|
3056 INIT_BUF(dj); |
|
|
3057 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
3058 if (res == FR_OK) { /* Follow completed */ |
|
|
3059 if (dj.dir) /* Found an object */ |
|
|
3060 get_fileinfo(&dj, fno); |
|
|
3061 else /* It is root dir */ |
|
|
3062 res = FR_INVALID_NAME; |
|
|
3063 } |
|
|
3064 FREE_BUF(); |
|
|
3065 } |
|
|
3066 |
|
|
3067 LEAVE_FF(dj.fs, res); |
|
|
3068 } |
|
|
3069 |
|
|
3070 |
|
|
3071 |
|
|
3072 #if !_FS_READONLY |
|
|
3073 /*-----------------------------------------------------------------------*/ |
|
|
3074 /* Get Number of Free Clusters */ |
|
|
3075 /*-----------------------------------------------------------------------*/ |
|
|
3076 |
|
|
3077 FRESULT f_getfree ( |
|
|
3078 const TCHAR *path, /* Pointer to the logical drive number (root dir) */ |
|
|
3079 DWORD *nclst, /* Pointer to the variable to return number of free clusters */ |
|
|
3080 FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */ |
|
|
3081 ) |
|
|
3082 { |
|
|
3083 FRESULT res; |
|
|
3084 DWORD n, clst, sect, stat; |
|
|
3085 UINT i; |
|
|
3086 BYTE fat, *p; |
|
|
3087 |
|
|
3088 |
|
|
3089 /* Get drive number */ |
|
|
3090 res = chk_mounted(&path, fatfs, 0); |
|
|
3091 if (res == FR_OK) { |
|
|
3092 /* If free_clust is valid, return it without full cluster scan */ |
|
|
3093 if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) { |
|
|
3094 *nclst = (*fatfs)->free_clust; |
|
|
3095 } else { |
|
|
3096 /* Get number of free clusters */ |
|
|
3097 fat = (*fatfs)->fs_type; |
|
|
3098 n = 0; |
|
|
3099 if (fat == FS_FAT12) { |
|
|
3100 clst = 2; |
|
|
3101 do { |
|
|
3102 stat = get_fat(*fatfs, clst); |
|
|
3103 if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } |
|
|
3104 if (stat == 1) { res = FR_INT_ERR; break; } |
|
|
3105 if (stat == 0) n++; |
|
|
3106 } while (++clst < (*fatfs)->n_fatent); |
|
|
3107 } else { |
|
|
3108 clst = (*fatfs)->n_fatent; |
|
|
3109 sect = (*fatfs)->fatbase; |
|
|
3110 i = 0; p = 0; |
|
|
3111 do { |
|
|
3112 if (!i) { |
|
|
3113 res = move_window(*fatfs, sect++); |
|
|
3114 if (res != FR_OK) break; |
|
|
3115 p = (*fatfs)->win; |
|
|
3116 i = SS(*fatfs); |
|
|
3117 } |
|
|
3118 if (fat == FS_FAT16) { |
|
|
3119 if (LD_WORD(p) == 0) n++; |
|
|
3120 p += 2; i -= 2; |
|
|
3121 } else { |
|
|
3122 if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++; |
|
|
3123 p += 4; i -= 4; |
|
|
3124 } |
|
|
3125 } while (--clst); |
|
|
3126 } |
|
|
3127 (*fatfs)->free_clust = n; |
|
|
3128 if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1; |
|
|
3129 *nclst = n; |
|
|
3130 } |
|
|
3131 } |
|
|
3132 LEAVE_FF(*fatfs, res); |
|
|
3133 } |
|
|
3134 |
|
|
3135 |
|
|
3136 |
|
|
3137 |
|
|
3138 /*-----------------------------------------------------------------------*/ |
|
|
3139 /* Truncate File */ |
|
|
3140 /*-----------------------------------------------------------------------*/ |
|
|
3141 |
|
|
3142 FRESULT f_truncate ( |
|
|
3143 FIL *fp /* Pointer to the file object */ |
|
|
3144 ) |
|
|
3145 { |
|
|
3146 FRESULT res; |
|
|
3147 DWORD ncl; |
|
|
3148 |
|
|
3149 |
|
|
3150 res = validate(fp->fs, fp->id); /* Check validity of the object */ |
|
|
3151 if (res == FR_OK) { |
|
|
3152 if (fp->flag & FA__ERROR) { /* Check abort flag */ |
|
|
3153 res = FR_INT_ERR; |
|
|
3154 } else { |
|
|
3155 if (!(fp->flag & FA_WRITE)) /* Check access mode */ |
|
|
3156 res = FR_DENIED; |
|
|
3157 } |
|
|
3158 } |
|
|
3159 if (res == FR_OK) { |
|
|
3160 if (fp->fsize > fp->fptr) { |
|
|
3161 fp->fsize = fp->fptr; /* Set file size to current R/W point */ |
|
|
3162 fp->flag |= FA__WRITTEN; |
|
|
3163 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ |
|
|
3164 res = remove_chain(fp->fs, fp->sclust); |
|
|
3165 fp->sclust = 0; |
|
|
3166 } else { /* When truncate a part of the file, remove remaining clusters */ |
|
|
3167 ncl = get_fat(fp->fs, fp->clust); |
|
|
3168 res = FR_OK; |
|
|
3169 if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; |
|
|
3170 if (ncl == 1) res = FR_INT_ERR; |
|
|
3171 if (res == FR_OK && ncl < fp->fs->n_fatent) { |
|
|
3172 res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF); |
|
|
3173 if (res == FR_OK) res = remove_chain(fp->fs, ncl); |
|
|
3174 } |
|
|
3175 } |
|
|
3176 } |
|
|
3177 if (res != FR_OK) fp->flag |= FA__ERROR; |
|
|
3178 } |
|
|
3179 |
|
|
3180 LEAVE_FF(fp->fs, res); |
|
|
3181 } |
|
|
3182 |
|
|
3183 |
|
|
3184 |
|
|
3185 |
|
|
3186 /*-----------------------------------------------------------------------*/ |
|
|
3187 /* Delete a File or Directory */ |
|
|
3188 /*-----------------------------------------------------------------------*/ |
|
|
3189 |
|
|
3190 FRESULT f_unlink ( |
|
|
3191 const TCHAR *path /* Pointer to the file or directory path */ |
|
|
3192 ) |
|
|
3193 { |
|
|
3194 FRESULT res; |
|
|
3195 DIR dj, sdj; |
|
|
3196 BYTE *dir; |
|
|
3197 DWORD dclst; |
|
|
3198 DEF_NAMEBUF; |
|
|
3199 |
|
|
3200 |
|
|
3201 res = chk_mounted(&path, &dj.fs, 1); |
|
|
3202 if (res == FR_OK) { |
|
|
3203 INIT_BUF(dj); |
|
|
3204 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
3205 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
|
|
3206 res = FR_INVALID_NAME; /* Cannot remove dot entry */ |
|
|
3207 #if _FS_SHARE |
|
|
3208 if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */ |
|
|
3209 #endif |
|
|
3210 if (res == FR_OK) { /* The object is accessible */ |
|
|
3211 dir = dj.dir; |
|
|
3212 if (!dir) { |
|
|
3213 res = FR_INVALID_NAME; /* Cannot remove the start directory */ |
|
|
3214 } else { |
|
|
3215 if (dir[DIR_Attr] & AM_RDO) |
|
|
3216 res = FR_DENIED; /* Cannot remove R/O object */ |
|
|
3217 } |
|
|
3218 dclst = LD_CLUST(dir); |
|
|
3219 if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */ |
|
|
3220 if (dclst < 2) { |
|
|
3221 res = FR_INT_ERR; |
|
|
3222 } else { |
|
|
3223 mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */ |
|
|
3224 sdj.sclust = dclst; |
|
|
3225 res = dir_sdi(&sdj, 2); /* Exclude dot entries */ |
|
|
3226 if (res == FR_OK) { |
|
|
3227 res = dir_read(&sdj); |
|
|
3228 if (res == FR_OK /* Not empty dir */ |
|
|
3229 #if _FS_RPATH |
|
|
3230 || dclst == sdj.fs->cdir /* Current dir */ |
|
|
3231 #endif |
|
|
3232 ) res = FR_DENIED; |
|
|
3233 if (res == FR_NO_FILE) res = FR_OK; /* Empty */ |
|
|
3234 } |
|
|
3235 } |
|
|
3236 } |
|
|
3237 if (res == FR_OK) { |
|
|
3238 res = dir_remove(&dj); /* Remove the directory entry */ |
|
|
3239 if (res == FR_OK) { |
|
|
3240 if (dclst) /* Remove the cluster chain if exist */ |
|
|
3241 res = remove_chain(dj.fs, dclst); |
|
|
3242 if (res == FR_OK) res = sync(dj.fs); |
|
|
3243 } |
|
|
3244 } |
|
|
3245 } |
|
|
3246 FREE_BUF(); |
|
|
3247 } |
|
|
3248 LEAVE_FF(dj.fs, res); |
|
|
3249 } |
|
|
3250 |
|
|
3251 |
|
|
3252 |
|
|
3253 |
|
|
3254 /*-----------------------------------------------------------------------*/ |
|
|
3255 /* Create a Directory */ |
|
|
3256 /*-----------------------------------------------------------------------*/ |
|
|
3257 |
|
|
3258 FRESULT f_mkdir ( |
|
|
3259 const TCHAR *path /* Pointer to the directory path */ |
|
|
3260 ) |
|
|
3261 { |
|
|
3262 FRESULT res; |
|
|
3263 DIR dj; |
|
|
3264 BYTE *dir, n; |
|
|
3265 DWORD dsc, dcl, pcl, tim = get_fattime(); |
|
|
3266 DEF_NAMEBUF; |
|
|
3267 |
|
|
3268 |
|
|
3269 res = chk_mounted(&path, &dj.fs, 1); |
|
|
3270 if (res == FR_OK) { |
|
|
3271 INIT_BUF(dj); |
|
|
3272 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
3273 if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */ |
|
|
3274 if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT)) |
|
|
3275 res = FR_INVALID_NAME; |
|
|
3276 if (res == FR_NO_FILE) { /* Can create a new directory */ |
|
|
3277 dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */ |
|
|
3278 res = FR_OK; |
|
|
3279 if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ |
|
|
3280 if (dcl == 1) res = FR_INT_ERR; |
|
|
3281 if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; |
|
|
3282 if (res == FR_OK) /* Flush FAT */ |
|
|
3283 res = move_window(dj.fs, 0); |
|
|
3284 if (res == FR_OK) { /* Initialize the new directory table */ |
|
|
3285 dsc = clust2sect(dj.fs, dcl); |
|
|
3286 dir = dj.fs->win; |
|
|
3287 mem_set(dir, 0, SS(dj.fs)); |
|
|
3288 mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */ |
|
|
3289 dir[DIR_Name] = '.'; |
|
|
3290 dir[DIR_Attr] = AM_DIR; |
|
|
3291 ST_DWORD(dir+DIR_WrtTime, tim); |
|
|
3292 ST_CLUST(dir, dcl); |
|
|
3293 mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */ |
|
|
3294 dir[33] = '.'; pcl = dj.sclust; |
|
|
3295 if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase) |
|
|
3296 pcl = 0; |
|
|
3297 ST_CLUST(dir+SZ_DIR, pcl); |
|
|
3298 for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */ |
|
|
3299 dj.fs->winsect = dsc++; |
|
|
3300 dj.fs->wflag = 1; |
|
|
3301 res = move_window(dj.fs, 0); |
|
|
3302 if (res != FR_OK) break; |
|
|
3303 mem_set(dir, 0, SS(dj.fs)); |
|
|
3304 } |
|
|
3305 } |
|
|
3306 if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */ |
|
|
3307 if (res != FR_OK) { |
|
|
3308 remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */ |
|
|
3309 } else { |
|
|
3310 dir = dj.dir; |
|
|
3311 dir[DIR_Attr] = AM_DIR; /* Attribute */ |
|
|
3312 ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */ |
|
|
3313 ST_CLUST(dir, dcl); /* Table start cluster */ |
|
|
3314 dj.fs->wflag = 1; |
|
|
3315 res = sync(dj.fs); |
|
|
3316 } |
|
|
3317 } |
|
|
3318 FREE_BUF(); |
|
|
3319 } |
|
|
3320 |
|
|
3321 LEAVE_FF(dj.fs, res); |
|
|
3322 } |
|
|
3323 |
|
|
3324 |
|
|
3325 |
|
|
3326 |
|
|
3327 /*-----------------------------------------------------------------------*/ |
|
|
3328 /* Change Attribute */ |
|
|
3329 /*-----------------------------------------------------------------------*/ |
|
|
3330 |
|
|
3331 FRESULT f_chmod ( |
|
|
3332 const TCHAR *path, /* Pointer to the file path */ |
|
|
3333 BYTE value, /* Attribute bits */ |
|
|
3334 BYTE mask /* Attribute mask to change */ |
|
|
3335 ) |
|
|
3336 { |
|
|
3337 FRESULT res; |
|
|
3338 DIR dj; |
|
|
3339 BYTE *dir; |
|
|
3340 DEF_NAMEBUF; |
|
|
3341 |
|
|
3342 |
|
|
3343 res = chk_mounted(&path, &dj.fs, 1); |
|
|
3344 if (res == FR_OK) { |
|
|
3345 INIT_BUF(dj); |
|
|
3346 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
3347 FREE_BUF(); |
|
|
3348 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
|
|
3349 res = FR_INVALID_NAME; |
|
|
3350 if (res == FR_OK) { |
|
|
3351 dir = dj.dir; |
|
|
3352 if (!dir) { /* Is it a root directory? */ |
|
|
3353 res = FR_INVALID_NAME; |
|
|
3354 } else { /* File or sub directory */ |
|
|
3355 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ |
|
|
3356 dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ |
|
|
3357 dj.fs->wflag = 1; |
|
|
3358 res = sync(dj.fs); |
|
|
3359 } |
|
|
3360 } |
|
|
3361 } |
|
|
3362 |
|
|
3363 LEAVE_FF(dj.fs, res); |
|
|
3364 } |
|
|
3365 |
|
|
3366 |
|
|
3367 |
|
|
3368 |
|
|
3369 /*-----------------------------------------------------------------------*/ |
|
|
3370 /* Change Timestamp */ |
|
|
3371 /*-----------------------------------------------------------------------*/ |
|
|
3372 |
|
|
3373 FRESULT f_utime ( |
|
|
3374 const TCHAR *path, /* Pointer to the file/directory name */ |
|
|
3375 const FILINFO *fno /* Pointer to the time stamp to be set */ |
|
|
3376 ) |
|
|
3377 { |
|
|
3378 FRESULT res; |
|
|
3379 DIR dj; |
|
|
3380 BYTE *dir; |
|
|
3381 DEF_NAMEBUF; |
|
|
3382 |
|
|
3383 |
|
|
3384 res = chk_mounted(&path, &dj.fs, 1); |
|
|
3385 if (res == FR_OK) { |
|
|
3386 INIT_BUF(dj); |
|
|
3387 res = follow_path(&dj, path); /* Follow the file path */ |
|
|
3388 FREE_BUF(); |
|
|
3389 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
|
|
3390 res = FR_INVALID_NAME; |
|
|
3391 if (res == FR_OK) { |
|
|
3392 dir = dj.dir; |
|
|
3393 if (!dir) { /* Root directory */ |
|
|
3394 res = FR_INVALID_NAME; |
|
|
3395 } else { /* File or sub-directory */ |
|
|
3396 ST_WORD(dir+DIR_WrtTime, fno->ftime); |
|
|
3397 ST_WORD(dir+DIR_WrtDate, fno->fdate); |
|
|
3398 dj.fs->wflag = 1; |
|
|
3399 res = sync(dj.fs); |
|
|
3400 } |
|
|
3401 } |
|
|
3402 } |
|
|
3403 |
|
|
3404 LEAVE_FF(dj.fs, res); |
|
|
3405 } |
|
|
3406 |
|
|
3407 |
|
|
3408 |
|
|
3409 |
|
|
3410 /*-----------------------------------------------------------------------*/ |
|
|
3411 /* Rename File/Directory */ |
|
|
3412 /*-----------------------------------------------------------------------*/ |
|
|
3413 |
|
|
3414 FRESULT f_rename ( |
|
|
3415 const TCHAR *path_old, /* Pointer to the old name */ |
|
|
3416 const TCHAR *path_new /* Pointer to the new name */ |
|
|
3417 ) |
|
|
3418 { |
|
|
3419 FRESULT res; |
|
|
3420 DIR djo, djn; |
|
|
3421 BYTE buf[21], *dir; |
|
|
3422 DWORD dw; |
|
|
3423 DEF_NAMEBUF; |
|
|
3424 |
|
|
3425 |
|
|
3426 res = chk_mounted(&path_old, &djo.fs, 1); |
|
|
3427 if (res == FR_OK) { |
|
|
3428 djn.fs = djo.fs; |
|
|
3429 INIT_BUF(djo); |
|
|
3430 res = follow_path(&djo, path_old); /* Check old object */ |
|
|
3431 if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT)) |
|
|
3432 res = FR_INVALID_NAME; |
|
|
3433 #if _FS_SHARE |
|
|
3434 if (res == FR_OK) res = chk_lock(&djo, 2); |
|
|
3435 #endif |
|
|
3436 if (res == FR_OK) { /* Old object is found */ |
|
|
3437 if (!djo.dir) { /* Is root dir? */ |
|
|
3438 res = FR_NO_FILE; |
|
|
3439 } else { |
|
|
3440 mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */ |
|
|
3441 mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */ |
|
|
3442 res = follow_path(&djn, path_new); |
|
|
3443 if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */ |
|
|
3444 if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */ |
|
|
3445 /* Start critical section that any interruption or error can cause cross-link */ |
|
|
3446 res = dir_register(&djn); /* Register the new entry */ |
|
|
3447 if (res == FR_OK) { |
|
|
3448 dir = djn.dir; /* Copy object information except for name */ |
|
|
3449 mem_cpy(dir+13, buf+2, 19); |
|
|
3450 dir[DIR_Attr] = buf[0] | AM_ARC; |
|
|
3451 djo.fs->wflag = 1; |
|
|
3452 if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */ |
|
|
3453 dw = clust2sect(djn.fs, LD_CLUST(dir)); |
|
|
3454 if (!dw) { |
|
|
3455 res = FR_INT_ERR; |
|
|
3456 } else { |
|
|
3457 res = move_window(djn.fs, dw); |
|
|
3458 dir = djn.fs->win+SZ_DIR; /* .. entry */ |
|
|
3459 if (res == FR_OK && dir[1] == '.') { |
|
|
3460 dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust; |
|
|
3461 ST_CLUST(dir, dw); |
|
|
3462 djn.fs->wflag = 1; |
|
|
3463 } |
|
|
3464 } |
|
|
3465 } |
|
|
3466 if (res == FR_OK) { |
|
|
3467 res = dir_remove(&djo); /* Remove old entry */ |
|
|
3468 if (res == FR_OK) |
|
|
3469 res = sync(djo.fs); |
|
|
3470 } |
|
|
3471 } |
|
|
3472 /* End critical section */ |
|
|
3473 } |
|
|
3474 } |
|
|
3475 } |
|
|
3476 FREE_BUF(); |
|
|
3477 } |
|
|
3478 LEAVE_FF(djo.fs, res); |
|
|
3479 } |
|
|
3480 |
|
|
3481 #endif /* !_FS_READONLY */ |
|
|
3482 #endif /* _FS_MINIMIZE == 0 */ |
|
|
3483 #endif /* _FS_MINIMIZE <= 1 */ |
|
|
3484 #endif /* _FS_MINIMIZE <= 2 */ |
|
|
3485 |
|
|
3486 |
|
|
3487 |
|
|
3488 /*-----------------------------------------------------------------------*/ |
|
|
3489 /* Forward data to the stream directly (available on only tiny cfg) */ |
|
|
3490 /*-----------------------------------------------------------------------*/ |
|
|
3491 #if _USE_FORWARD && _FS_TINY |
|
|
3492 |
|
|
3493 FRESULT f_forward ( |
|
|
3494 FIL *fp, /* Pointer to the file object */ |
|
|
3495 UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ |
|
|
3496 UINT btr, /* Number of bytes to forward */ |
|
|
3497 UINT *bf /* Pointer to number of bytes forwarded */ |
|
|
3498 ) |
|
|
3499 { |
|
|
3500 FRESULT res; |
|
|
3501 DWORD remain, clst, sect; |
|
|
3502 UINT rcnt; |
|
|
3503 BYTE csect; |
|
|
3504 |
|
|
3505 |
|
|
3506 *bf = 0; /* Initialize byte counter */ |
|
|
3507 |
|
|
3508 res = validate(fp->fs, fp->id); /* Check validity of the object */ |
|
|
3509 if (res != FR_OK) LEAVE_FF(fp->fs, res); |
|
|
3510 if (fp->flag & FA__ERROR) /* Check error flag */ |
|
|
3511 LEAVE_FF(fp->fs, FR_INT_ERR); |
|
|
3512 if (!(fp->flag & FA_READ)) /* Check access mode */ |
|
|
3513 LEAVE_FF(fp->fs, FR_DENIED); |
|
|
3514 |
|
|
3515 remain = fp->fsize - fp->fptr; |
|
|
3516 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ |
|
|
3517 |
|
|
3518 for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */ |
|
|
3519 fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) { |
|
|
3520 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
|
|
3521 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
|
|
3522 if (!csect) { /* On the cluster boundary? */ |
|
|
3523 clst = (fp->fptr == 0) ? /* On the top of the file? */ |
|
|
3524 fp->sclust : get_fat(fp->fs, fp->clust); |
|
|
3525 if (clst <= 1) ABORT(fp->fs, FR_INT_ERR); |
|
|
3526 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
|
|
3527 fp->clust = clst; /* Update current cluster */ |
|
|
3528 } |
|
|
3529 } |
|
|
3530 sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */ |
|
|
3531 if (!sect) ABORT(fp->fs, FR_INT_ERR); |
|
|
3532 sect += csect; |
|
|
3533 if (move_window(fp->fs, sect)) /* Move sector window */ |
|
|
3534 ABORT(fp->fs, FR_DISK_ERR); |
|
|
3535 fp->dsect = sect; |
|
|
3536 rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */ |
|
|
3537 if (rcnt > btr) rcnt = btr; |
|
|
3538 rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt); |
|
|
3539 if (!rcnt) ABORT(fp->fs, FR_INT_ERR); |
|
|
3540 } |
|
|
3541 |
|
|
3542 LEAVE_FF(fp->fs, FR_OK); |
|
|
3543 } |
|
|
3544 #endif /* _USE_FORWARD */ |
|
|
3545 |
|
|
3546 |
|
|
3547 |
|
|
3548 #if _USE_MKFS && !_FS_READONLY |
|
|
3549 /*-----------------------------------------------------------------------*/ |
|
|
3550 /* Create File System on the Drive */ |
|
|
3551 /*-----------------------------------------------------------------------*/ |
|
|
3552 #define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */ |
|
|
3553 #define N_FATS 1 /* Number of FAT copies (1 or 2) */ |
|
|
3554 |
|
|
3555 |
|
|
3556 FRESULT f_mkfs ( |
|
|
3557 BYTE drv, /* Logical drive number */ |
|
|
3558 BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */ |
|
|
3559 UINT au /* Allocation unit size [bytes] */ |
|
|
3560 ) |
|
|
3561 { |
|
|
3562 static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0}; |
|
|
3563 static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512}; |
|
|
3564 BYTE fmt, md, sys, *tbl, pdrv, part; |
|
|
3565 DWORD n_clst, vs, n, wsect; |
|
|
3566 UINT i; |
|
|
3567 DWORD b_vol, b_fat, b_dir, b_data; /* LBA */ |
|
|
3568 DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */ |
|
|
3569 FATFS *fs; |
|
|
3570 DSTATUS stat; |
|
|
3571 |
|
|
3572 |
|
|
3573 /* Check mounted drive and clear work area */ |
|
|
3574 if (drv >= _VOLUMES) return FR_INVALID_DRIVE; |
|
|
3575 if (sfd > 1) return FR_INVALID_PARAMETER; |
|
|
3576 if (au & (au - 1)) return FR_INVALID_PARAMETER; |
|
|
3577 fs = FatFs[drv]; |
|
|
3578 if (!fs) return FR_NOT_ENABLED; |
|
|
3579 fs->fs_type = 0; |
|
|
3580 pdrv = LD2PD(drv); /* Physical drive */ |
|
|
3581 part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/ |
|
|
3582 |
|
|
3583 /* Get disk statics */ |
|
|
3584 stat = disk_initialize(pdrv); |
|
|
3585 if (stat & STA_NOINIT) return FR_NOT_READY; |
|
|
3586 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; |
|
|
3587 #if _MAX_SS != 512 /* Get disk sector size */ |
|
|
3588 if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS) |
|
|
3589 return FR_DISK_ERR; |
|
|
3590 #endif |
|
|
3591 if (_MULTI_PARTITION && part) { |
|
|
3592 /* Get partition information from partition table in the MBR */ |
|
|
3593 if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR; |
|
|
3594 if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; |
|
|
3595 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE]; |
|
|
3596 if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */ |
|
|
3597 b_vol = LD_DWORD(tbl+8); /* Volume start sector */ |
|
|
3598 n_vol = LD_DWORD(tbl+12); /* Volume size */ |
|
|
3599 } else { |
|
|
3600 /* Create a partition in this function */ |
|
|
3601 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128) |
|
|
3602 return FR_DISK_ERR; |
|
|
3603 b_vol = (sfd) ? 0 : 63; /* Volume start sector */ |
|
|
3604 n_vol -= b_vol; /* Volume size */ |
|
|
3605 } |
|
|
3606 |
|
|
3607 if (!au) { /* AU auto selection */ |
|
|
3608 vs = n_vol / (2000 / (SS(fs) / 512)); |
|
|
3609 for (i = 0; vs < vst[i]; i++) ; |
|
|
3610 au = cst[i]; |
|
|
3611 } |
|
|
3612 au /= SS(fs); /* Number of sectors per cluster */ |
|
|
3613 if (au == 0) au = 1; |
|
|
3614 if (au > 128) au = 128; |
|
|
3615 |
|
|
3616 /* Pre-compute number of clusters and FAT syb-type */ |
|
|
3617 n_clst = n_vol / au; |
|
|
3618 fmt = FS_FAT12; |
|
|
3619 if (n_clst >= MIN_FAT16) fmt = FS_FAT16; |
|
|
3620 if (n_clst >= MIN_FAT32) fmt = FS_FAT32; |
|
|
3621 |
|
|
3622 /* Determine offset and size of FAT structure */ |
|
|
3623 if (fmt == FS_FAT32) { |
|
|
3624 n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs); |
|
|
3625 n_rsv = 32; |
|
|
3626 n_dir = 0; |
|
|
3627 } else { |
|
|
3628 n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4; |
|
|
3629 n_fat = (n_fat + SS(fs) - 1) / SS(fs); |
|
|
3630 n_rsv = 1; |
|
|
3631 n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs); |
|
|
3632 } |
|
|
3633 b_fat = b_vol + n_rsv; /* FAT area start sector */ |
|
|
3634 b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */ |
|
|
3635 b_data = b_dir + n_dir; /* Data area start sector */ |
|
|
3636 if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */ |
|
|
3637 |
|
|
3638 /* Align data start sector to erase block boundary (for flash memory media) */ |
|
|
3639 if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1; |
|
|
3640 n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */ |
|
|
3641 n = (n - b_data) / N_FATS; |
|
|
3642 if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */ |
|
|
3643 n_rsv += n; |
|
|
3644 b_fat += n; |
|
|
3645 } else { /* FAT12/16: Expand FAT size */ |
|
|
3646 n_fat += n; |
|
|
3647 } |
|
|
3648 |
|
|
3649 /* Determine number of clusters and final check of validity of the FAT sub-type */ |
|
|
3650 n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au; |
|
|
3651 if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16) |
|
|
3652 || (fmt == FS_FAT32 && n_clst < MIN_FAT32)) |
|
|
3653 return FR_MKFS_ABORTED; |
|
|
3654 |
|
|
3655 switch (fmt) { /* Determine system ID for partition table */ |
|
|
3656 case FS_FAT12: sys = 0x01; break; |
|
|
3657 case FS_FAT16: sys = (n_vol < 0x10000) ? 0x04 : 0x06; break; |
|
|
3658 default: sys = 0x0C; |
|
|
3659 } |
|
|
3660 |
|
|
3661 if (_MULTI_PARTITION && part) { |
|
|
3662 /* Update system ID in the partition table */ |
|
|
3663 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE]; |
|
|
3664 tbl[4] = sys; |
|
|
3665 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR; |
|
|
3666 md = 0xF8; |
|
|
3667 } else { |
|
|
3668 if (sfd) { /* No patition table (SFD) */ |
|
|
3669 md = 0xF0; |
|
|
3670 } else { /* Create partition table (FDISK) */ |
|
|
3671 mem_set(fs->win, 0, SS(fs)); |
|
|
3672 tbl = fs->win+MBR_Table; /* Create partiton table for single partition in the drive */ |
|
|
3673 tbl[1] = 1; /* Partition start head */ |
|
|
3674 tbl[2] = 1; /* Partition start sector */ |
|
|
3675 tbl[3] = 0; /* Partition start cylinder */ |
|
|
3676 tbl[4] = sys; /* System type */ |
|
|
3677 tbl[5] = 254; /* Partition end head */ |
|
|
3678 n = (b_vol + n_vol) / 63 / 255; |
|
|
3679 tbl[6] = (BYTE)((n >> 2) | 63); /* Partiiton end sector */ |
|
|
3680 tbl[7] = (BYTE)n; /* End cylinder */ |
|
|
3681 ST_DWORD(tbl+8, 63); /* Partition start in LBA */ |
|
|
3682 ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */ |
|
|
3683 ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */ |
|
|
3684 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */ |
|
|
3685 return FR_DISK_ERR; |
|
|
3686 md = 0xF8; |
|
|
3687 } |
|
|
3688 } |
|
|
3689 |
|
|
3690 /* Create BPB in the VBR */ |
|
|
3691 tbl = fs->win; /* Clear sector */ |
|
|
3692 mem_set(tbl, 0, SS(fs)); |
|
|
3693 mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */ |
|
|
3694 i = SS(fs); /* Sector size */ |
|
|
3695 ST_WORD(tbl+BPB_BytsPerSec, i); |
|
|
3696 tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */ |
|
|
3697 ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */ |
|
|
3698 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */ |
|
|
3699 i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */ |
|
|
3700 ST_WORD(tbl+BPB_RootEntCnt, i); |
|
|
3701 if (n_vol < 0x10000) { /* Number of total sectors */ |
|
|
3702 ST_WORD(tbl+BPB_TotSec16, n_vol); |
|
|
3703 } else { |
|
|
3704 ST_DWORD(tbl+BPB_TotSec32, n_vol); |
|
|
3705 } |
|
|
3706 tbl[BPB_Media] = md; /* Media descriptor */ |
|
|
3707 ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */ |
|
|
3708 ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */ |
|
|
3709 ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */ |
|
|
3710 n = get_fattime(); /* Use current time as VSN */ |
|
|
3711 if (fmt == FS_FAT32) { |
|
|
3712 ST_DWORD(tbl+BS_VolID32, n); /* VSN */ |
|
|
3713 ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */ |
|
|
3714 ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */ |
|
|
3715 ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */ |
|
|
3716 ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */ |
|
|
3717 tbl[BS_DrvNum32] = 0x80; /* Drive number */ |
|
|
3718 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */ |
|
|
3719 mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */ |
|
|
3720 } else { |
|
|
3721 ST_DWORD(tbl+BS_VolID, n); /* VSN */ |
|
|
3722 ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */ |
|
|
3723 tbl[BS_DrvNum] = 0x80; /* Drive number */ |
|
|
3724 tbl[BS_BootSig] = 0x29; /* Extended boot signature */ |
|
|
3725 mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */ |
|
|
3726 } |
|
|
3727 ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */ |
|
|
3728 if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */ |
|
|
3729 return FR_DISK_ERR; |
|
|
3730 if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */ |
|
|
3731 disk_write(pdrv, tbl, b_vol + 6, 1); |
|
|
3732 |
|
|
3733 /* Initialize FAT area */ |
|
|
3734 wsect = b_fat; |
|
|
3735 for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */ |
|
|
3736 mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */ |
|
|
3737 n = md; /* Media descriptor byte */ |
|
|
3738 if (fmt != FS_FAT32) { |
|
|
3739 n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00; |
|
|
3740 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */ |
|
|
3741 } else { |
|
|
3742 n |= 0xFFFFFF00; |
|
|
3743 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */ |
|
|
3744 ST_DWORD(tbl+4, 0xFFFFFFFF); |
|
|
3745 ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */ |
|
|
3746 } |
|
|
3747 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK) |
|
|
3748 return FR_DISK_ERR; |
|
|
3749 mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */ |
|
|
3750 for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */ |
|
|
3751 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK) |
|
|
3752 return FR_DISK_ERR; |
|
|
3753 } |
|
|
3754 } |
|
|
3755 |
|
|
3756 /* Initialize root directory */ |
|
|
3757 i = (fmt == FS_FAT32) ? au : n_dir; |
|
|
3758 do { |
|
|
3759 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK) |
|
|
3760 return FR_DISK_ERR; |
|
|
3761 } while (--i); |
|
|
3762 |
|
|
3763 #if _USE_ERASE /* Erase data area if needed */ |
|
|
3764 { |
|
|
3765 DWORD eb[2]; |
|
|
3766 |
|
|
3767 eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1; |
|
|
3768 disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb); |
|
|
3769 } |
|
|
3770 #endif |
|
|
3771 |
|
|
3772 /* Create FSInfo if needed */ |
|
|
3773 if (fmt == FS_FAT32) { |
|
|
3774 ST_DWORD(tbl+FSI_LeadSig, 0x41615252); |
|
|
3775 ST_DWORD(tbl+FSI_StrucSig, 0x61417272); |
|
|
3776 ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */ |
|
|
3777 ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */ |
|
|
3778 ST_WORD(tbl+BS_55AA, 0xAA55); |
|
|
3779 disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */ |
|
|
3780 disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */ |
|
|
3781 } |
|
|
3782 |
|
|
3783 return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR; |
|
|
3784 } |
|
|
3785 |
|
|
3786 |
|
|
3787 #if _MULTI_PARTITION == 2 |
|
|
3788 /*-----------------------------------------------------------------------*/ |
|
|
3789 /* Divide Physical Drive */ |
|
|
3790 /*-----------------------------------------------------------------------*/ |
|
|
3791 |
|
|
3792 FRESULT f_fdisk ( |
|
|
3793 BYTE pdrv, /* Physical drive number */ |
|
|
3794 const DWORD szt[], /* Pointer to the size table for each partitions */ |
|
|
3795 void* work /* Pointer to the working buffer */ |
|
|
3796 ) |
|
|
3797 { |
|
|
3798 UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl; |
|
|
3799 BYTE s_hd, e_hd, *p, *buf = (BYTE*)work; |
|
|
3800 DSTATUS stat; |
|
|
3801 DWORD sz_disk, sz_part, s_part; |
|
|
3802 |
|
|
3803 |
|
|
3804 stat = disk_initialize(pdrv); |
|
|
3805 if (stat & STA_NOINIT) return FR_NOT_READY; |
|
|
3806 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; |
|
|
3807 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR; |
|
|
3808 |
|
|
3809 /* Determine CHS in the table regardless of the drive geometry */ |
|
|
3810 for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ; |
|
|
3811 if (n == 256) n--; |
|
|
3812 e_hd = n - 1; |
|
|
3813 sz_cyl = 63 * n; |
|
|
3814 tot_cyl = sz_disk / sz_cyl; |
|
|
3815 |
|
|
3816 /* Create partition table */ |
|
|
3817 mem_set(buf, 0, _MAX_SS); |
|
|
3818 p = buf + MBR_Table; b_cyl = 0; |
|
|
3819 for (i = 0; i < 4; i++, p += SZ_PTE) { |
|
|
3820 p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl; |
|
|
3821 if (!p_cyl) continue; |
|
|
3822 s_part = (DWORD)sz_cyl * b_cyl; |
|
|
3823 sz_part = (DWORD)sz_cyl * p_cyl; |
|
|
3824 if (i == 0) { /* Exclude first track of cylinder 0 */ |
|
|
3825 s_hd = 1; |
|
|
3826 s_part += 63; sz_part -= 63; |
|
|
3827 } else { |
|
|
3828 s_hd = 0; |
|
|
3829 } |
|
|
3830 e_cyl = b_cyl + p_cyl - 1; |
|
|
3831 if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER; |
|
|
3832 |
|
|
3833 /* Set partition table */ |
|
|
3834 p[1] = s_hd; /* Start head */ |
|
|
3835 p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */ |
|
|
3836 p[3] = (BYTE)b_cyl; /* Start cylinder */ |
|
|
3837 p[4] = 0x06; /* System type (temporary setting) */ |
|
|
3838 p[5] = e_hd; /* End head */ |
|
|
3839 p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */ |
|
|
3840 p[7] = (BYTE)e_cyl; /* End cylinder */ |
|
|
3841 ST_DWORD(p + 8, s_part); /* Start sector in LBA */ |
|
|
3842 ST_DWORD(p + 12, sz_part); /* Partition size */ |
|
|
3843 |
|
|
3844 /* Next partition */ |
|
|
3845 b_cyl += p_cyl; |
|
|
3846 } |
|
|
3847 ST_WORD(p, 0xAA55); |
|
|
3848 |
|
|
3849 /* Write it to the MBR */ |
|
|
3850 return (disk_write(pdrv, buf, 0, 1) || disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK; |
|
|
3851 } |
|
|
3852 |
|
|
3853 |
|
|
3854 #endif /* _MULTI_PARTITION == 2 */ |
|
|
3855 #endif /* _USE_MKFS && !_FS_READONLY */ |
|
|
3856 |
|
|
3857 |
|
|
3858 |
|
|
3859 |
|
|
3860 #if _USE_STRFUNC |
|
|
3861 /*-----------------------------------------------------------------------*/ |
|
|
3862 /* Get a string from the file */ |
|
|
3863 /*-----------------------------------------------------------------------*/ |
|
|
3864 TCHAR* f_gets ( |
|
|
3865 TCHAR* buff, /* Pointer to the string buffer to read */ |
|
|
3866 int len, /* Size of string buffer (characters) */ |
|
|
3867 FIL* fil /* Pointer to the file object */ |
|
|
3868 ) |
|
|
3869 { |
|
|
3870 int n = 0; |
|
|
3871 TCHAR c, *p = buff; |
|
|
3872 BYTE s[2]; |
|
|
3873 UINT rc; |
|
|
3874 |
|
|
3875 |
|
|
3876 while (n < len - 1) { /* Read bytes until buffer gets filled */ |
|
|
3877 f_read(fil, s, 1, &rc); |
|
|
3878 if (rc != 1) break; /* Break on EOF or error */ |
|
|
3879 c = s[0]; |
|
|
3880 #if _LFN_UNICODE /* Read a character in UTF-8 encoding */ |
|
|
3881 if (c >= 0x80) { |
|
|
3882 if (c < 0xC0) continue; /* Skip stray trailer */ |
|
|
3883 if (c < 0xE0) { /* Two-byte sequense */ |
|
|
3884 f_read(fil, s, 1, &rc); |
|
|
3885 if (rc != 1) break; |
|
|
3886 c = ((c & 0x1F) << 6) | (s[0] & 0x3F); |
|
|
3887 if (c < 0x80) c = '?'; |
|
|
3888 } else { |
|
|
3889 if (c < 0xF0) { /* Three-byte sequense */ |
|
|
3890 f_read(fil, s, 2, &rc); |
|
|
3891 if (rc != 2) break; |
|
|
3892 c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F); |
|
|
3893 if (c < 0x800) c = '?'; |
|
|
3894 } else { /* Reject four-byte sequense */ |
|
|
3895 c = '?'; |
|
|
3896 } |
|
|
3897 } |
|
|
3898 } |
|
|
3899 #endif |
|
|
3900 #if _USE_STRFUNC >= 2 |
|
|
3901 if (c == '\r') continue; /* Strip '\r' */ |
|
|
3902 #endif |
|
|
3903 *p++ = c; |
|
|
3904 n++; |
|
|
3905 if (c == '\n') break; /* Break on EOL */ |
|
|
3906 } |
|
|
3907 *p = 0; |
|
|
3908 return n ? buff : 0; /* When no data read (eof or error), return with error. */ |
|
|
3909 } |
|
|
3910 |
|
|
3911 |
|
|
3912 |
|
|
3913 #if !_FS_READONLY |
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3914 #include <stdarg.h> |
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3915 /*-----------------------------------------------------------------------*/ |
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3916 /* Put a character to the file */ |
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3917 /*-----------------------------------------------------------------------*/ |
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3918 int f_putc ( |
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3919 TCHAR c, /* A character to be output */ |
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3920 FIL* fil /* Pointer to the file object */ |
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3921 ) |
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3922 { |
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3923 UINT bw, btw; |
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3924 BYTE s[3]; |
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3925 |
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3926 |
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3927 #if _USE_STRFUNC >= 2 |
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3928 if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */ |
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3929 #endif |
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3930 |
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3931 #if _LFN_UNICODE /* Write the character in UTF-8 encoding */ |
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3932 if (c < 0x80) { /* 7-bit */ |
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3933 s[0] = (BYTE)c; |
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3934 btw = 1; |
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3935 } else { |
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3936 if (c < 0x800) { /* 11-bit */ |
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3937 s[0] = (BYTE)(0xC0 | (c >> 6)); |
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3938 s[1] = (BYTE)(0x80 | (c & 0x3F)); |
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3939 btw = 2; |
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3940 } else { /* 16-bit */ |
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3941 s[0] = (BYTE)(0xE0 | (c >> 12)); |
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3942 s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F)); |
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3943 s[2] = (BYTE)(0x80 | (c & 0x3F)); |
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3944 btw = 3; |
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3945 } |
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3946 } |
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3947 #else /* Write the character without conversion */ |
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3948 s[0] = (BYTE)c; |
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3949 btw = 1; |
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3950 #endif |
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3951 f_write(fil, s, btw, &bw); /* Write the char to the file */ |
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3952 return (bw == btw) ? 1 : EOF; /* Return the result */ |
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3953 } |
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3954 |
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3955 |
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3956 |
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3957 |
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3958 /*-----------------------------------------------------------------------*/ |
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3959 /* Put a string to the file */ |
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3960 /*-----------------------------------------------------------------------*/ |
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3961 int f_puts ( |
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3962 const TCHAR* str, /* Pointer to the string to be output */ |
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3963 FIL* fil /* Pointer to the file object */ |
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3964 ) |
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3965 { |
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3966 int n; |
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3967 |
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3968 |
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3969 for (n = 0; *str; str++, n++) { |
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3970 if (f_putc(*str, fil) == EOF) return EOF; |
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3971 } |
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3972 return n; |
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3973 } |
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3974 |
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3975 |
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3976 |
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3977 |
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3978 /*-----------------------------------------------------------------------*/ |
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3979 /* Put a formatted string to the file */ |
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3980 /*-----------------------------------------------------------------------*/ |
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3981 int f_printf ( |
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3982 FIL* fil, /* Pointer to the file object */ |
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3983 const TCHAR* str, /* Pointer to the format string */ |
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3984 ... /* Optional arguments... */ |
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3985 ) |
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3986 { |
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3987 va_list arp; |
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3988 BYTE f, r; |
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3989 UINT i, j, w; |
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3990 ULONG v; |
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3991 TCHAR c, d, s[16], *p; |
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3992 int res, chc, cc; |
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3993 |
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3994 |
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3995 va_start(arp, str); |
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3996 |
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3997 for (cc = res = 0; cc != EOF; res += cc) { |
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3998 c = *str++; |
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3999 if (c == 0) break; /* End of string */ |
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4000 if (c != '%') { /* Non escape character */ |
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4001 cc = f_putc(c, fil); |
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4002 if (cc != EOF) cc = 1; |
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4003 continue; |
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4004 } |
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4005 w = f = 0; |
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4006 c = *str++; |
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4007 if (c == '0') { /* Flag: '0' padding */ |
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4008 f = 1; c = *str++; |
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4009 } else { |
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4010 if (c == '-') { /* Flag: left justified */ |
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4011 f = 2; c = *str++; |
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4012 } |
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4013 } |
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4014 while (IsDigit(c)) { /* Precision */ |
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4015 w = w * 10 + c - '0'; |
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4016 c = *str++; |
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4017 } |
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4018 if (c == 'l' || c == 'L') { /* Prefix: Size is long int */ |
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4019 f |= 4; c = *str++; |
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4020 } |
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4021 if (!c) break; |
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4022 d = c; |
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4023 if (IsLower(d)) d -= 0x20; |
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4024 switch (d) { /* Type is... */ |
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4025 case 'S' : /* String */ |
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4026 p = va_arg(arp, TCHAR*); |
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4027 for (j = 0; p[j]; j++) ; |
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4028 chc = 0; |
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4029 if (!(f & 2)) { |
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4030 while (j++ < w) chc += (cc = f_putc(' ', fil)); |
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4031 } |
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4032 chc += (cc = f_puts(p, fil)); |
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4033 while (j++ < w) chc += (cc = f_putc(' ', fil)); |
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4034 if (cc != EOF) cc = chc; |
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4035 continue; |
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4036 case 'C' : /* Character */ |
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4037 cc = f_putc((TCHAR)va_arg(arp, int), fil); continue; |
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4038 case 'B' : /* Binary */ |
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4039 r = 2; break; |
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4040 case 'O' : /* Octal */ |
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4041 r = 8; break; |
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4042 case 'D' : /* Signed decimal */ |
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4043 case 'U' : /* Unsigned decimal */ |
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4044 r = 10; break; |
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4045 case 'X' : /* Hexdecimal */ |
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4046 r = 16; break; |
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4047 default: /* Unknown type (passthrough) */ |
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4048 cc = f_putc(c, fil); continue; |
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4049 } |
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4050 |
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4051 /* Get an argument and put it in numeral */ |
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4052 v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int)); |
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4053 if (d == 'D' && (v & 0x80000000)) { |
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4054 v = 0 - v; |
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4055 f |= 8; |
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4056 } |
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4057 i = 0; |
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4058 do { |
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4059 d = (TCHAR)(v % r); v /= r; |
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4060 if (d > 9) d += (c == 'x') ? 0x27 : 0x07; |
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4061 s[i++] = d + '0'; |
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4062 } while (v && i < sizeof(s) / sizeof(s[0])); |
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4063 if (f & 8) s[i++] = '-'; |
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4064 j = i; d = (f & 1) ? '0' : ' '; |
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4065 res = 0; |
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4066 while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil)); |
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4067 do res += (cc = f_putc(s[--i], fil)); while(i); |
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4068 while (j++ < w) res += (cc = f_putc(' ', fil)); |
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4069 if (cc != EOF) cc = res; |
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4070 } |
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4071 |
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4072 va_end(arp); |
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4073 return (cc == EOF) ? cc : res; |
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4074 } |
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4075 |
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4076 #endif /* !_FS_READONLY */ |
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4077 #endif /* _USE_STRFUNC */ |
