SD Card Interface class. Log raw data bytes to memory addresses of your choice, or format the card and use the FAT file system to write files.
FATFileSystem/Core/ff.c@1:94c648931f84, 2010-08-07 (annotated)
- Committer:
- Blaze513
- Date:
- Sat Aug 07 18:32:30 2010 +0000
- Revision:
- 1:94c648931f84
- Child:
- 3:210eb67b260c
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Blaze513 | 1:94c648931f84 | 1 | /*----------------------------------------------------------------------------/ |
Blaze513 | 1:94c648931f84 | 2 | / FatFs - FAT file system module R0.08 (C)ChaN, 2010 |
Blaze513 | 1:94c648931f84 | 3 | /-----------------------------------------------------------------------------/ |
Blaze513 | 1:94c648931f84 | 4 | / FatFs module is a generic FAT file system module for small embedded systems. |
Blaze513 | 1:94c648931f84 | 5 | / This is a free software that opened for education, research and commercial |
Blaze513 | 1:94c648931f84 | 6 | / developments under license policy of following terms. |
Blaze513 | 1:94c648931f84 | 7 | / |
Blaze513 | 1:94c648931f84 | 8 | / Copyright (C) 2010, ChaN, all right reserved. |
Blaze513 | 1:94c648931f84 | 9 | / |
Blaze513 | 1:94c648931f84 | 10 | / * The FatFs module is a free software and there is NO WARRANTY. |
Blaze513 | 1:94c648931f84 | 11 | / * No restriction on use. You can use, modify and redistribute it for |
Blaze513 | 1:94c648931f84 | 12 | / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY. |
Blaze513 | 1:94c648931f84 | 13 | / * Redistributions of source code must retain the above copyright notice. |
Blaze513 | 1:94c648931f84 | 14 | / |
Blaze513 | 1:94c648931f84 | 15 | /-----------------------------------------------------------------------------/ |
Blaze513 | 1:94c648931f84 | 16 | / Feb 26,'06 R0.00 Prototype. |
Blaze513 | 1:94c648931f84 | 17 | / |
Blaze513 | 1:94c648931f84 | 18 | / Apr 29,'06 R0.01 First stable version. |
Blaze513 | 1:94c648931f84 | 19 | / |
Blaze513 | 1:94c648931f84 | 20 | / Jun 01,'06 R0.02 Added FAT12 support. |
Blaze513 | 1:94c648931f84 | 21 | / Removed unbuffered mode. |
Blaze513 | 1:94c648931f84 | 22 | / Fixed a problem on small (<32M) partition. |
Blaze513 | 1:94c648931f84 | 23 | / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). |
Blaze513 | 1:94c648931f84 | 24 | / |
Blaze513 | 1:94c648931f84 | 25 | / Sep 22,'06 R0.03 Added f_rename(). |
Blaze513 | 1:94c648931f84 | 26 | / Changed option _FS_MINIMUM to _FS_MINIMIZE. |
Blaze513 | 1:94c648931f84 | 27 | / Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast. |
Blaze513 | 1:94c648931f84 | 28 | / Fixed f_mkdir() creates incorrect directory on FAT32. |
Blaze513 | 1:94c648931f84 | 29 | / |
Blaze513 | 1:94c648931f84 | 30 | / Feb 04,'07 R0.04 Supported multiple drive system. |
Blaze513 | 1:94c648931f84 | 31 | / Changed some interfaces for multiple drive system. |
Blaze513 | 1:94c648931f84 | 32 | / Changed f_mountdrv() to f_mount(). |
Blaze513 | 1:94c648931f84 | 33 | / Added f_mkfs(). |
Blaze513 | 1:94c648931f84 | 34 | / Apr 01,'07 R0.04a Supported multiple partitions on a physical drive. |
Blaze513 | 1:94c648931f84 | 35 | / Added a capability of extending file size to f_lseek(). |
Blaze513 | 1:94c648931f84 | 36 | / Added minimization level 3. |
Blaze513 | 1:94c648931f84 | 37 | / Fixed an endian sensitive code in f_mkfs(). |
Blaze513 | 1:94c648931f84 | 38 | / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. |
Blaze513 | 1:94c648931f84 | 39 | / Added FSInfo support. |
Blaze513 | 1:94c648931f84 | 40 | / Fixed DBCS name can result FR_INVALID_NAME. |
Blaze513 | 1:94c648931f84 | 41 | / Fixed short seek (<= csize) collapses the file object. |
Blaze513 | 1:94c648931f84 | 42 | / |
Blaze513 | 1:94c648931f84 | 43 | / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). |
Blaze513 | 1:94c648931f84 | 44 | / Fixed f_mkfs() on FAT32 creates incorrect FSInfo. |
Blaze513 | 1:94c648931f84 | 45 | / Fixed f_mkdir() on FAT32 creates incorrect directory. |
Blaze513 | 1:94c648931f84 | 46 | / Feb 03,'08 R0.05a Added f_truncate() and f_utime(). |
Blaze513 | 1:94c648931f84 | 47 | / Fixed off by one error at FAT sub-type determination. |
Blaze513 | 1:94c648931f84 | 48 | / Fixed btr in f_read() can be mistruncated. |
Blaze513 | 1:94c648931f84 | 49 | / Fixed cached sector is not flushed when create and close |
Blaze513 | 1:94c648931f84 | 50 | / without write. |
Blaze513 | 1:94c648931f84 | 51 | / |
Blaze513 | 1:94c648931f84 | 52 | / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). |
Blaze513 | 1:94c648931f84 | 53 | / Improved performance of f_lseek() on moving to the same |
Blaze513 | 1:94c648931f84 | 54 | / or following cluster. |
Blaze513 | 1:94c648931f84 | 55 | / |
Blaze513 | 1:94c648931f84 | 56 | / Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option. |
Blaze513 | 1:94c648931f84 | 57 | / Added long file name support. |
Blaze513 | 1:94c648931f84 | 58 | / Added multiple code page support. |
Blaze513 | 1:94c648931f84 | 59 | / Added re-entrancy for multitask operation. |
Blaze513 | 1:94c648931f84 | 60 | / Added auto cluster size selection to f_mkfs(). |
Blaze513 | 1:94c648931f84 | 61 | / Added rewind option to f_readdir(). |
Blaze513 | 1:94c648931f84 | 62 | / Changed result code of critical errors. |
Blaze513 | 1:94c648931f84 | 63 | / Renamed string functions to avoid name collision. |
Blaze513 | 1:94c648931f84 | 64 | / Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg. |
Blaze513 | 1:94c648931f84 | 65 | / Added multiple sector size support. |
Blaze513 | 1:94c648931f84 | 66 | / Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error. |
Blaze513 | 1:94c648931f84 | 67 | / Fixed wrong cache control in f_lseek(). |
Blaze513 | 1:94c648931f84 | 68 | / Added relative path feature. |
Blaze513 | 1:94c648931f84 | 69 | / Added f_chdir() and f_chdrive(). |
Blaze513 | 1:94c648931f84 | 70 | / Added proper case conversion to extended char. |
Blaze513 | 1:94c648931f84 | 71 | / Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h. |
Blaze513 | 1:94c648931f84 | 72 | / Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH. |
Blaze513 | 1:94c648931f84 | 73 | / Fixed name matching error on the 13 char boundary. |
Blaze513 | 1:94c648931f84 | 74 | / Added a configuration option, _LFN_UNICODE. |
Blaze513 | 1:94c648931f84 | 75 | / Changed f_readdir() to return the SFN with always upper |
Blaze513 | 1:94c648931f84 | 76 | / case on non-LFN cfg. |
Blaze513 | 1:94c648931f84 | 77 | / |
Blaze513 | 1:94c648931f84 | 78 | / May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN) |
Blaze513 | 1:94c648931f84 | 79 | / Added file lock feature. (_FS_SHARE) |
Blaze513 | 1:94c648931f84 | 80 | / Added fast seek feature. (_USE_FASTSEEK) |
Blaze513 | 1:94c648931f84 | 81 | / Changed some types on the API, XCHAR->TCHAR. |
Blaze513 | 1:94c648931f84 | 82 | / Changed fname member in the FILINFO structure on Unicode cfg. |
Blaze513 | 1:94c648931f84 | 83 | / String functions support UTF-8 encoding files on Unicode cfg. |
Blaze513 | 1:94c648931f84 | 84 | /---------------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 85 | |
Blaze513 | 1:94c648931f84 | 86 | #include "ff.h" /* FatFs configurations and declarations */ |
Blaze513 | 1:94c648931f84 | 87 | #include "diskio.h" /* Declarations of low level disk I/O functions */ |
Blaze513 | 1:94c648931f84 | 88 | |
Blaze513 | 1:94c648931f84 | 89 | |
Blaze513 | 1:94c648931f84 | 90 | /*-------------------------------------------------------------------------- |
Blaze513 | 1:94c648931f84 | 91 | |
Blaze513 | 1:94c648931f84 | 92 | Module Private Definitions |
Blaze513 | 1:94c648931f84 | 93 | |
Blaze513 | 1:94c648931f84 | 94 | ---------------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 95 | |
Blaze513 | 1:94c648931f84 | 96 | #if _FATFS != 8085 |
Blaze513 | 1:94c648931f84 | 97 | #error Wrong include file (ff.h). |
Blaze513 | 1:94c648931f84 | 98 | #endif |
Blaze513 | 1:94c648931f84 | 99 | |
Blaze513 | 1:94c648931f84 | 100 | |
Blaze513 | 1:94c648931f84 | 101 | /* FAT sub-type boundaries */ |
Blaze513 | 1:94c648931f84 | 102 | /* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */ |
Blaze513 | 1:94c648931f84 | 103 | #define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */ |
Blaze513 | 1:94c648931f84 | 104 | #define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */ |
Blaze513 | 1:94c648931f84 | 105 | |
Blaze513 | 1:94c648931f84 | 106 | |
Blaze513 | 1:94c648931f84 | 107 | /* Definitions corresponds to multiple sector size */ |
Blaze513 | 1:94c648931f84 | 108 | #if _MAX_SS == 512 /* Single sector size */ |
Blaze513 | 1:94c648931f84 | 109 | #define SS(fs) 512U |
Blaze513 | 1:94c648931f84 | 110 | #elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */ |
Blaze513 | 1:94c648931f84 | 111 | #define SS(fs) ((fs)->ssize) |
Blaze513 | 1:94c648931f84 | 112 | #else |
Blaze513 | 1:94c648931f84 | 113 | #error Wrong sector size. |
Blaze513 | 1:94c648931f84 | 114 | #endif |
Blaze513 | 1:94c648931f84 | 115 | |
Blaze513 | 1:94c648931f84 | 116 | |
Blaze513 | 1:94c648931f84 | 117 | /* Reentrancy related */ |
Blaze513 | 1:94c648931f84 | 118 | #if _FS_REENTRANT |
Blaze513 | 1:94c648931f84 | 119 | #if _USE_LFN == 1 |
Blaze513 | 1:94c648931f84 | 120 | #error Static LFN work area must not be used in re-entrant configuration. |
Blaze513 | 1:94c648931f84 | 121 | #endif |
Blaze513 | 1:94c648931f84 | 122 | #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; } |
Blaze513 | 1:94c648931f84 | 123 | #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; } |
Blaze513 | 1:94c648931f84 | 124 | |
Blaze513 | 1:94c648931f84 | 125 | #else |
Blaze513 | 1:94c648931f84 | 126 | #define ENTER_FF(fs) |
Blaze513 | 1:94c648931f84 | 127 | #define LEAVE_FF(fs, res) return res |
Blaze513 | 1:94c648931f84 | 128 | |
Blaze513 | 1:94c648931f84 | 129 | #endif |
Blaze513 | 1:94c648931f84 | 130 | |
Blaze513 | 1:94c648931f84 | 131 | #define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); } |
Blaze513 | 1:94c648931f84 | 132 | |
Blaze513 | 1:94c648931f84 | 133 | |
Blaze513 | 1:94c648931f84 | 134 | /* Character code support macros */ |
Blaze513 | 1:94c648931f84 | 135 | #define IsUpper(c) (((c)>='A')&&((c)<='Z')) |
Blaze513 | 1:94c648931f84 | 136 | #define IsLower(c) (((c)>='a')&&((c)<='z')) |
Blaze513 | 1:94c648931f84 | 137 | #define IsDigit(c) (((c)>='0')&&((c)<='9')) |
Blaze513 | 1:94c648931f84 | 138 | |
Blaze513 | 1:94c648931f84 | 139 | #if _DF1S /* Code page is DBCS */ |
Blaze513 | 1:94c648931f84 | 140 | |
Blaze513 | 1:94c648931f84 | 141 | #ifdef _DF2S /* Two 1st byte areas */ |
Blaze513 | 1:94c648931f84 | 142 | #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E)) |
Blaze513 | 1:94c648931f84 | 143 | #else /* One 1st byte area */ |
Blaze513 | 1:94c648931f84 | 144 | #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) |
Blaze513 | 1:94c648931f84 | 145 | #endif |
Blaze513 | 1:94c648931f84 | 146 | |
Blaze513 | 1:94c648931f84 | 147 | #ifdef _DS3S /* Three 2nd byte areas */ |
Blaze513 | 1:94c648931f84 | 148 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E)) |
Blaze513 | 1:94c648931f84 | 149 | #else /* Two 2nd byte areas */ |
Blaze513 | 1:94c648931f84 | 150 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E)) |
Blaze513 | 1:94c648931f84 | 151 | #endif |
Blaze513 | 1:94c648931f84 | 152 | |
Blaze513 | 1:94c648931f84 | 153 | #else /* Code page is SBCS */ |
Blaze513 | 1:94c648931f84 | 154 | |
Blaze513 | 1:94c648931f84 | 155 | #define IsDBCS1(c) 0 |
Blaze513 | 1:94c648931f84 | 156 | #define IsDBCS2(c) 0 |
Blaze513 | 1:94c648931f84 | 157 | |
Blaze513 | 1:94c648931f84 | 158 | #endif /* _DF1S */ |
Blaze513 | 1:94c648931f84 | 159 | |
Blaze513 | 1:94c648931f84 | 160 | |
Blaze513 | 1:94c648931f84 | 161 | /* Name status flags */ |
Blaze513 | 1:94c648931f84 | 162 | #define NS 11 /* Offset of name status byte */ |
Blaze513 | 1:94c648931f84 | 163 | #define NS_LOSS 0x01 /* Out of 8.3 format */ |
Blaze513 | 1:94c648931f84 | 164 | #define NS_LFN 0x02 /* Force to create LFN entry */ |
Blaze513 | 1:94c648931f84 | 165 | #define NS_LAST 0x04 /* Last segment */ |
Blaze513 | 1:94c648931f84 | 166 | #define NS_BODY 0x08 /* Lower case flag (body) */ |
Blaze513 | 1:94c648931f84 | 167 | #define NS_EXT 0x10 /* Lower case flag (ext) */ |
Blaze513 | 1:94c648931f84 | 168 | #define NS_DOT 0x20 /* Dot entry */ |
Blaze513 | 1:94c648931f84 | 169 | |
Blaze513 | 1:94c648931f84 | 170 | |
Blaze513 | 1:94c648931f84 | 171 | |
Blaze513 | 1:94c648931f84 | 172 | /*------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 173 | /* Work area */ |
Blaze513 | 1:94c648931f84 | 174 | |
Blaze513 | 1:94c648931f84 | 175 | #if !_DRIVES |
Blaze513 | 1:94c648931f84 | 176 | #error Number of drives must not be 0. |
Blaze513 | 1:94c648931f84 | 177 | #endif |
Blaze513 | 1:94c648931f84 | 178 | static |
Blaze513 | 1:94c648931f84 | 179 | WORD Fsid; /* File system mount ID */ |
Blaze513 | 1:94c648931f84 | 180 | static |
Blaze513 | 1:94c648931f84 | 181 | FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */ |
Blaze513 | 1:94c648931f84 | 182 | |
Blaze513 | 1:94c648931f84 | 183 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 184 | static |
Blaze513 | 1:94c648931f84 | 185 | BYTE Drive; /* Current drive */ |
Blaze513 | 1:94c648931f84 | 186 | #endif |
Blaze513 | 1:94c648931f84 | 187 | |
Blaze513 | 1:94c648931f84 | 188 | |
Blaze513 | 1:94c648931f84 | 189 | #if _USE_LFN == 0 /* No LFN */ |
Blaze513 | 1:94c648931f84 | 190 | #define DEF_NAMEBUF BYTE sfn[12] |
Blaze513 | 1:94c648931f84 | 191 | #define INIT_BUF(dobj) (dobj).fn = sfn |
Blaze513 | 1:94c648931f84 | 192 | #define FREE_BUF() |
Blaze513 | 1:94c648931f84 | 193 | |
Blaze513 | 1:94c648931f84 | 194 | #elif _USE_LFN == 1 /* LFN with static LFN working buffer */ |
Blaze513 | 1:94c648931f84 | 195 | static WCHAR LfnBuf[_MAX_LFN + 1]; |
Blaze513 | 1:94c648931f84 | 196 | #define DEF_NAMEBUF BYTE sfn[12] |
Blaze513 | 1:94c648931f84 | 197 | #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; } |
Blaze513 | 1:94c648931f84 | 198 | #define FREE_BUF() |
Blaze513 | 1:94c648931f84 | 199 | |
Blaze513 | 1:94c648931f84 | 200 | #elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */ |
Blaze513 | 1:94c648931f84 | 201 | #define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1] |
Blaze513 | 1:94c648931f84 | 202 | #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; } |
Blaze513 | 1:94c648931f84 | 203 | #define FREE_BUF() |
Blaze513 | 1:94c648931f84 | 204 | |
Blaze513 | 1:94c648931f84 | 205 | #elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */ |
Blaze513 | 1:94c648931f84 | 206 | #define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn |
Blaze513 | 1:94c648931f84 | 207 | #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \ |
Blaze513 | 1:94c648931f84 | 208 | if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \ |
Blaze513 | 1:94c648931f84 | 209 | (dobj).lfn = lfn; (dobj).fn = sfn; } |
Blaze513 | 1:94c648931f84 | 210 | #define FREE_BUF() ff_memfree(lfn) |
Blaze513 | 1:94c648931f84 | 211 | |
Blaze513 | 1:94c648931f84 | 212 | #else |
Blaze513 | 1:94c648931f84 | 213 | #error Wrong LFN configuration. |
Blaze513 | 1:94c648931f84 | 214 | #endif |
Blaze513 | 1:94c648931f84 | 215 | |
Blaze513 | 1:94c648931f84 | 216 | |
Blaze513 | 1:94c648931f84 | 217 | |
Blaze513 | 1:94c648931f84 | 218 | |
Blaze513 | 1:94c648931f84 | 219 | /*-------------------------------------------------------------------------- |
Blaze513 | 1:94c648931f84 | 220 | |
Blaze513 | 1:94c648931f84 | 221 | Module Private Functions |
Blaze513 | 1:94c648931f84 | 222 | |
Blaze513 | 1:94c648931f84 | 223 | ---------------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 224 | |
Blaze513 | 1:94c648931f84 | 225 | |
Blaze513 | 1:94c648931f84 | 226 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 227 | /* String functions */ |
Blaze513 | 1:94c648931f84 | 228 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 229 | |
Blaze513 | 1:94c648931f84 | 230 | /* Copy memory to memory */ |
Blaze513 | 1:94c648931f84 | 231 | static |
Blaze513 | 1:94c648931f84 | 232 | void mem_cpy (void* dst, const void* src, int cnt) { |
Blaze513 | 1:94c648931f84 | 233 | BYTE *d = (BYTE*)dst; |
Blaze513 | 1:94c648931f84 | 234 | const BYTE *s = (const BYTE*)src; |
Blaze513 | 1:94c648931f84 | 235 | |
Blaze513 | 1:94c648931f84 | 236 | #if _WORD_ACCESS == 1 |
Blaze513 | 1:94c648931f84 | 237 | while (cnt >= sizeof(int)) { |
Blaze513 | 1:94c648931f84 | 238 | *(int*)d = *(int*)s; |
Blaze513 | 1:94c648931f84 | 239 | d += sizeof(int); s += sizeof(int); |
Blaze513 | 1:94c648931f84 | 240 | cnt -= sizeof(int); |
Blaze513 | 1:94c648931f84 | 241 | } |
Blaze513 | 1:94c648931f84 | 242 | #endif |
Blaze513 | 1:94c648931f84 | 243 | while (cnt--) |
Blaze513 | 1:94c648931f84 | 244 | *d++ = *s++; |
Blaze513 | 1:94c648931f84 | 245 | } |
Blaze513 | 1:94c648931f84 | 246 | |
Blaze513 | 1:94c648931f84 | 247 | /* Fill memory */ |
Blaze513 | 1:94c648931f84 | 248 | static |
Blaze513 | 1:94c648931f84 | 249 | void mem_set (void* dst, int val, int cnt) { |
Blaze513 | 1:94c648931f84 | 250 | BYTE *d = (BYTE*)dst; |
Blaze513 | 1:94c648931f84 | 251 | |
Blaze513 | 1:94c648931f84 | 252 | while (cnt--) |
Blaze513 | 1:94c648931f84 | 253 | *d++ = (BYTE)val; |
Blaze513 | 1:94c648931f84 | 254 | } |
Blaze513 | 1:94c648931f84 | 255 | |
Blaze513 | 1:94c648931f84 | 256 | /* Compare memory to memory */ |
Blaze513 | 1:94c648931f84 | 257 | static |
Blaze513 | 1:94c648931f84 | 258 | int mem_cmp (const void* dst, const void* src, int cnt) { |
Blaze513 | 1:94c648931f84 | 259 | const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; |
Blaze513 | 1:94c648931f84 | 260 | int r = 0; |
Blaze513 | 1:94c648931f84 | 261 | |
Blaze513 | 1:94c648931f84 | 262 | while (cnt-- && (r = *d++ - *s++) == 0) ; |
Blaze513 | 1:94c648931f84 | 263 | return r; |
Blaze513 | 1:94c648931f84 | 264 | } |
Blaze513 | 1:94c648931f84 | 265 | |
Blaze513 | 1:94c648931f84 | 266 | /* Check if chr is contained in the string */ |
Blaze513 | 1:94c648931f84 | 267 | static |
Blaze513 | 1:94c648931f84 | 268 | int chk_chr (const char* str, int chr) { |
Blaze513 | 1:94c648931f84 | 269 | while (*str && *str != chr) str++; |
Blaze513 | 1:94c648931f84 | 270 | return *str; |
Blaze513 | 1:94c648931f84 | 271 | } |
Blaze513 | 1:94c648931f84 | 272 | |
Blaze513 | 1:94c648931f84 | 273 | |
Blaze513 | 1:94c648931f84 | 274 | |
Blaze513 | 1:94c648931f84 | 275 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 276 | /* Request/Release grant to access the volume */ |
Blaze513 | 1:94c648931f84 | 277 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 278 | #if _FS_REENTRANT |
Blaze513 | 1:94c648931f84 | 279 | |
Blaze513 | 1:94c648931f84 | 280 | static |
Blaze513 | 1:94c648931f84 | 281 | int lock_fs ( |
Blaze513 | 1:94c648931f84 | 282 | FATFS *fs /* File system object */ |
Blaze513 | 1:94c648931f84 | 283 | ) |
Blaze513 | 1:94c648931f84 | 284 | { |
Blaze513 | 1:94c648931f84 | 285 | return ff_req_grant(fs->sobj); |
Blaze513 | 1:94c648931f84 | 286 | } |
Blaze513 | 1:94c648931f84 | 287 | |
Blaze513 | 1:94c648931f84 | 288 | |
Blaze513 | 1:94c648931f84 | 289 | static |
Blaze513 | 1:94c648931f84 | 290 | void unlock_fs ( |
Blaze513 | 1:94c648931f84 | 291 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 292 | FRESULT res /* Result code to be returned */ |
Blaze513 | 1:94c648931f84 | 293 | ) |
Blaze513 | 1:94c648931f84 | 294 | { |
Blaze513 | 1:94c648931f84 | 295 | if (res != FR_NOT_ENABLED && |
Blaze513 | 1:94c648931f84 | 296 | res != FR_INVALID_DRIVE && |
Blaze513 | 1:94c648931f84 | 297 | res != FR_INVALID_OBJECT && |
Blaze513 | 1:94c648931f84 | 298 | res != FR_TIMEOUT) { |
Blaze513 | 1:94c648931f84 | 299 | ff_rel_grant(fs->sobj); |
Blaze513 | 1:94c648931f84 | 300 | } |
Blaze513 | 1:94c648931f84 | 301 | } |
Blaze513 | 1:94c648931f84 | 302 | #endif |
Blaze513 | 1:94c648931f84 | 303 | |
Blaze513 | 1:94c648931f84 | 304 | |
Blaze513 | 1:94c648931f84 | 305 | |
Blaze513 | 1:94c648931f84 | 306 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 307 | /* File shareing control functions */ |
Blaze513 | 1:94c648931f84 | 308 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 309 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 310 | |
Blaze513 | 1:94c648931f84 | 311 | static |
Blaze513 | 1:94c648931f84 | 312 | FRESULT chk_lock ( /* Check if the file can be accessed */ |
Blaze513 | 1:94c648931f84 | 313 | FAT_DIR* dj, /* Directory object pointing the file to be checked */ |
Blaze513 | 1:94c648931f84 | 314 | int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ |
Blaze513 | 1:94c648931f84 | 315 | ) |
Blaze513 | 1:94c648931f84 | 316 | { |
Blaze513 | 1:94c648931f84 | 317 | UINT i, be; |
Blaze513 | 1:94c648931f84 | 318 | |
Blaze513 | 1:94c648931f84 | 319 | /* Search file semaphore table */ |
Blaze513 | 1:94c648931f84 | 320 | for (i = be = 0; i < _FS_SHARE; i++) { |
Blaze513 | 1:94c648931f84 | 321 | if (dj->fs->flsem[i].ctr) { /* Existing entry */ |
Blaze513 | 1:94c648931f84 | 322 | if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */ |
Blaze513 | 1:94c648931f84 | 323 | dj->fs->flsem[i].idx == dj->index) break; |
Blaze513 | 1:94c648931f84 | 324 | } else { /* Blank entry */ |
Blaze513 | 1:94c648931f84 | 325 | be++; |
Blaze513 | 1:94c648931f84 | 326 | } |
Blaze513 | 1:94c648931f84 | 327 | } |
Blaze513 | 1:94c648931f84 | 328 | if (i == _FS_SHARE) /* The file has not been opened */ |
Blaze513 | 1:94c648931f84 | 329 | return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */ |
Blaze513 | 1:94c648931f84 | 330 | |
Blaze513 | 1:94c648931f84 | 331 | /* The file has been opened. Reject any open against writing file and all write mode open */ |
Blaze513 | 1:94c648931f84 | 332 | return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK; |
Blaze513 | 1:94c648931f84 | 333 | } |
Blaze513 | 1:94c648931f84 | 334 | |
Blaze513 | 1:94c648931f84 | 335 | |
Blaze513 | 1:94c648931f84 | 336 | static |
Blaze513 | 1:94c648931f84 | 337 | int enq_lock ( /* Check if an entry is available for a new file */ |
Blaze513 | 1:94c648931f84 | 338 | FATFS* fs /* File system object */ |
Blaze513 | 1:94c648931f84 | 339 | ) |
Blaze513 | 1:94c648931f84 | 340 | { |
Blaze513 | 1:94c648931f84 | 341 | UINT i; |
Blaze513 | 1:94c648931f84 | 342 | |
Blaze513 | 1:94c648931f84 | 343 | for (i = 0; i < _FS_SHARE && fs->flsem[i].ctr; i++) ; |
Blaze513 | 1:94c648931f84 | 344 | return (i == _FS_SHARE) ? 0 : 1; |
Blaze513 | 1:94c648931f84 | 345 | } |
Blaze513 | 1:94c648931f84 | 346 | |
Blaze513 | 1:94c648931f84 | 347 | |
Blaze513 | 1:94c648931f84 | 348 | static |
Blaze513 | 1:94c648931f84 | 349 | UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */ |
Blaze513 | 1:94c648931f84 | 350 | FAT_DIR* dj, /* Directory object pointing the file to register or increment */ |
Blaze513 | 1:94c648931f84 | 351 | int acc /* Desired access mode (0:Read, !0:Write) */ |
Blaze513 | 1:94c648931f84 | 352 | ) |
Blaze513 | 1:94c648931f84 | 353 | { |
Blaze513 | 1:94c648931f84 | 354 | UINT i; |
Blaze513 | 1:94c648931f84 | 355 | |
Blaze513 | 1:94c648931f84 | 356 | |
Blaze513 | 1:94c648931f84 | 357 | for (i = 0; i < _FS_SHARE; i++) { /* Find the file */ |
Blaze513 | 1:94c648931f84 | 358 | if (dj->fs->flsem[i].ctr && |
Blaze513 | 1:94c648931f84 | 359 | dj->fs->flsem[i].clu == dj->sclust && |
Blaze513 | 1:94c648931f84 | 360 | dj->fs->flsem[i].idx == dj->index) break; |
Blaze513 | 1:94c648931f84 | 361 | } |
Blaze513 | 1:94c648931f84 | 362 | |
Blaze513 | 1:94c648931f84 | 363 | if (i == _FS_SHARE) { /* Not opened. Register it as new. */ |
Blaze513 | 1:94c648931f84 | 364 | for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ; |
Blaze513 | 1:94c648931f84 | 365 | if (i == _FS_SHARE) return 0; /* No space to register (int err) */ |
Blaze513 | 1:94c648931f84 | 366 | dj->fs->flsem[i].clu = dj->sclust; |
Blaze513 | 1:94c648931f84 | 367 | dj->fs->flsem[i].idx = dj->index; |
Blaze513 | 1:94c648931f84 | 368 | } |
Blaze513 | 1:94c648931f84 | 369 | |
Blaze513 | 1:94c648931f84 | 370 | if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */ |
Blaze513 | 1:94c648931f84 | 371 | |
Blaze513 | 1:94c648931f84 | 372 | dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */ |
Blaze513 | 1:94c648931f84 | 373 | |
Blaze513 | 1:94c648931f84 | 374 | return i + 1; |
Blaze513 | 1:94c648931f84 | 375 | } |
Blaze513 | 1:94c648931f84 | 376 | |
Blaze513 | 1:94c648931f84 | 377 | |
Blaze513 | 1:94c648931f84 | 378 | static |
Blaze513 | 1:94c648931f84 | 379 | FRESULT dec_lock ( /* Decrement file open counter */ |
Blaze513 | 1:94c648931f84 | 380 | FATFS* fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 381 | UINT i /* Semaphore index */ |
Blaze513 | 1:94c648931f84 | 382 | ) |
Blaze513 | 1:94c648931f84 | 383 | { |
Blaze513 | 1:94c648931f84 | 384 | WORD n; |
Blaze513 | 1:94c648931f84 | 385 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 386 | |
Blaze513 | 1:94c648931f84 | 387 | |
Blaze513 | 1:94c648931f84 | 388 | if (--i < _FS_SHARE) { |
Blaze513 | 1:94c648931f84 | 389 | n = fs->flsem[i].ctr; |
Blaze513 | 1:94c648931f84 | 390 | if (n >= 0x100) n = 0; |
Blaze513 | 1:94c648931f84 | 391 | if (n) n--; |
Blaze513 | 1:94c648931f84 | 392 | fs->flsem[i].ctr = n; |
Blaze513 | 1:94c648931f84 | 393 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 394 | } else { |
Blaze513 | 1:94c648931f84 | 395 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 396 | } |
Blaze513 | 1:94c648931f84 | 397 | return res; |
Blaze513 | 1:94c648931f84 | 398 | } |
Blaze513 | 1:94c648931f84 | 399 | |
Blaze513 | 1:94c648931f84 | 400 | #endif |
Blaze513 | 1:94c648931f84 | 401 | |
Blaze513 | 1:94c648931f84 | 402 | |
Blaze513 | 1:94c648931f84 | 403 | |
Blaze513 | 1:94c648931f84 | 404 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 405 | /* Change window offset */ |
Blaze513 | 1:94c648931f84 | 406 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 407 | |
Blaze513 | 1:94c648931f84 | 408 | static |
Blaze513 | 1:94c648931f84 | 409 | FRESULT move_window ( |
Blaze513 | 1:94c648931f84 | 410 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 411 | DWORD sector /* Sector number to make appearance in the fs->win[] */ |
Blaze513 | 1:94c648931f84 | 412 | ) /* Move to zero only writes back dirty window */ |
Blaze513 | 1:94c648931f84 | 413 | { |
Blaze513 | 1:94c648931f84 | 414 | DWORD wsect; |
Blaze513 | 1:94c648931f84 | 415 | |
Blaze513 | 1:94c648931f84 | 416 | |
Blaze513 | 1:94c648931f84 | 417 | wsect = fs->winsect; |
Blaze513 | 1:94c648931f84 | 418 | if (wsect != sector) { /* Changed current window */ |
Blaze513 | 1:94c648931f84 | 419 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 420 | if (fs->wflag) { /* Write back dirty window if needed */ |
Blaze513 | 1:94c648931f84 | 421 | if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 422 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 423 | fs->wflag = 0; |
Blaze513 | 1:94c648931f84 | 424 | if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */ |
Blaze513 | 1:94c648931f84 | 425 | BYTE nf; |
Blaze513 | 1:94c648931f84 | 426 | for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */ |
Blaze513 | 1:94c648931f84 | 427 | wsect += fs->fsize; |
Blaze513 | 1:94c648931f84 | 428 | disk_write(fs->drv, fs->win, wsect, 1); |
Blaze513 | 1:94c648931f84 | 429 | } |
Blaze513 | 1:94c648931f84 | 430 | } |
Blaze513 | 1:94c648931f84 | 431 | } |
Blaze513 | 1:94c648931f84 | 432 | #endif |
Blaze513 | 1:94c648931f84 | 433 | if (sector) { |
Blaze513 | 1:94c648931f84 | 434 | if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 435 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 436 | fs->winsect = sector; |
Blaze513 | 1:94c648931f84 | 437 | } |
Blaze513 | 1:94c648931f84 | 438 | } |
Blaze513 | 1:94c648931f84 | 439 | |
Blaze513 | 1:94c648931f84 | 440 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 441 | } |
Blaze513 | 1:94c648931f84 | 442 | |
Blaze513 | 1:94c648931f84 | 443 | |
Blaze513 | 1:94c648931f84 | 444 | |
Blaze513 | 1:94c648931f84 | 445 | |
Blaze513 | 1:94c648931f84 | 446 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 447 | /* Clean-up cached data */ |
Blaze513 | 1:94c648931f84 | 448 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 449 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 450 | static |
Blaze513 | 1:94c648931f84 | 451 | FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */ |
Blaze513 | 1:94c648931f84 | 452 | FATFS *fs /* File system object */ |
Blaze513 | 1:94c648931f84 | 453 | ) |
Blaze513 | 1:94c648931f84 | 454 | { |
Blaze513 | 1:94c648931f84 | 455 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 456 | |
Blaze513 | 1:94c648931f84 | 457 | |
Blaze513 | 1:94c648931f84 | 458 | res = move_window(fs, 0); |
Blaze513 | 1:94c648931f84 | 459 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 460 | /* Update FSInfo sector if needed */ |
Blaze513 | 1:94c648931f84 | 461 | if (fs->fs_type == FS_FAT32 && fs->fsi_flag) { |
Blaze513 | 1:94c648931f84 | 462 | fs->winsect = 0; |
Blaze513 | 1:94c648931f84 | 463 | mem_set(fs->win, 0, 512); |
Blaze513 | 1:94c648931f84 | 464 | ST_WORD(fs->win+BS_55AA, 0xAA55); |
Blaze513 | 1:94c648931f84 | 465 | ST_DWORD(fs->win+FSI_LeadSig, 0x41615252); |
Blaze513 | 1:94c648931f84 | 466 | ST_DWORD(fs->win+FSI_StrucSig, 0x61417272); |
Blaze513 | 1:94c648931f84 | 467 | ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust); |
Blaze513 | 1:94c648931f84 | 468 | ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust); |
Blaze513 | 1:94c648931f84 | 469 | disk_write(fs->drv, fs->win, fs->fsi_sector, 1); |
Blaze513 | 1:94c648931f84 | 470 | fs->fsi_flag = 0; |
Blaze513 | 1:94c648931f84 | 471 | } |
Blaze513 | 1:94c648931f84 | 472 | /* Make sure that no pending write process in the physical drive */ |
Blaze513 | 1:94c648931f84 | 473 | if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK) |
Blaze513 | 1:94c648931f84 | 474 | res = FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 475 | } |
Blaze513 | 1:94c648931f84 | 476 | |
Blaze513 | 1:94c648931f84 | 477 | return res; |
Blaze513 | 1:94c648931f84 | 478 | } |
Blaze513 | 1:94c648931f84 | 479 | #endif |
Blaze513 | 1:94c648931f84 | 480 | |
Blaze513 | 1:94c648931f84 | 481 | |
Blaze513 | 1:94c648931f84 | 482 | |
Blaze513 | 1:94c648931f84 | 483 | |
Blaze513 | 1:94c648931f84 | 484 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 485 | /* FAT access - Read value of a FAT entry */ |
Blaze513 | 1:94c648931f84 | 486 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 487 | |
Blaze513 | 1:94c648931f84 | 488 | |
Blaze513 | 1:94c648931f84 | 489 | DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */ |
Blaze513 | 1:94c648931f84 | 490 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 491 | DWORD clst /* Cluster# to get the link information */ |
Blaze513 | 1:94c648931f84 | 492 | ) |
Blaze513 | 1:94c648931f84 | 493 | { |
Blaze513 | 1:94c648931f84 | 494 | UINT wc, bc; |
Blaze513 | 1:94c648931f84 | 495 | BYTE *p; |
Blaze513 | 1:94c648931f84 | 496 | |
Blaze513 | 1:94c648931f84 | 497 | |
Blaze513 | 1:94c648931f84 | 498 | if (clst < 2 || clst >= fs->n_fatent) /* Chack range */ |
Blaze513 | 1:94c648931f84 | 499 | return 1; |
Blaze513 | 1:94c648931f84 | 500 | |
Blaze513 | 1:94c648931f84 | 501 | switch (fs->fs_type) { |
Blaze513 | 1:94c648931f84 | 502 | case FS_FAT12 : |
Blaze513 | 1:94c648931f84 | 503 | bc = (UINT)clst; bc += bc / 2; |
Blaze513 | 1:94c648931f84 | 504 | if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; |
Blaze513 | 1:94c648931f84 | 505 | wc = fs->win[bc % SS(fs)]; bc++; |
Blaze513 | 1:94c648931f84 | 506 | if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; |
Blaze513 | 1:94c648931f84 | 507 | wc |= fs->win[bc % SS(fs)] << 8; |
Blaze513 | 1:94c648931f84 | 508 | return (clst & 1) ? (wc >> 4) : (wc & 0xFFF); |
Blaze513 | 1:94c648931f84 | 509 | |
Blaze513 | 1:94c648931f84 | 510 | case FS_FAT16 : |
Blaze513 | 1:94c648931f84 | 511 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break; |
Blaze513 | 1:94c648931f84 | 512 | p = &fs->win[clst * 2 % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 513 | return LD_WORD(p); |
Blaze513 | 1:94c648931f84 | 514 | |
Blaze513 | 1:94c648931f84 | 515 | case FS_FAT32 : |
Blaze513 | 1:94c648931f84 | 516 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break; |
Blaze513 | 1:94c648931f84 | 517 | p = &fs->win[clst * 4 % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 518 | return LD_DWORD(p) & 0x0FFFFFFF; |
Blaze513 | 1:94c648931f84 | 519 | } |
Blaze513 | 1:94c648931f84 | 520 | |
Blaze513 | 1:94c648931f84 | 521 | return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */ |
Blaze513 | 1:94c648931f84 | 522 | } |
Blaze513 | 1:94c648931f84 | 523 | |
Blaze513 | 1:94c648931f84 | 524 | |
Blaze513 | 1:94c648931f84 | 525 | |
Blaze513 | 1:94c648931f84 | 526 | |
Blaze513 | 1:94c648931f84 | 527 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 528 | /* FAT access - Change value of a FAT entry */ |
Blaze513 | 1:94c648931f84 | 529 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 530 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 531 | |
Blaze513 | 1:94c648931f84 | 532 | FRESULT put_fat ( |
Blaze513 | 1:94c648931f84 | 533 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 534 | DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */ |
Blaze513 | 1:94c648931f84 | 535 | DWORD val /* New value to mark the cluster */ |
Blaze513 | 1:94c648931f84 | 536 | ) |
Blaze513 | 1:94c648931f84 | 537 | { |
Blaze513 | 1:94c648931f84 | 538 | UINT bc; |
Blaze513 | 1:94c648931f84 | 539 | BYTE *p; |
Blaze513 | 1:94c648931f84 | 540 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 541 | |
Blaze513 | 1:94c648931f84 | 542 | |
Blaze513 | 1:94c648931f84 | 543 | if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ |
Blaze513 | 1:94c648931f84 | 544 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 545 | |
Blaze513 | 1:94c648931f84 | 546 | } else { |
Blaze513 | 1:94c648931f84 | 547 | switch (fs->fs_type) { |
Blaze513 | 1:94c648931f84 | 548 | case FS_FAT12 : |
Blaze513 | 1:94c648931f84 | 549 | bc = clst; bc += bc / 2; |
Blaze513 | 1:94c648931f84 | 550 | res = move_window(fs, fs->fatbase + (bc / SS(fs))); |
Blaze513 | 1:94c648931f84 | 551 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 552 | p = &fs->win[bc % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 553 | *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; |
Blaze513 | 1:94c648931f84 | 554 | bc++; |
Blaze513 | 1:94c648931f84 | 555 | fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 556 | res = move_window(fs, fs->fatbase + (bc / SS(fs))); |
Blaze513 | 1:94c648931f84 | 557 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 558 | p = &fs->win[bc % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 559 | *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); |
Blaze513 | 1:94c648931f84 | 560 | break; |
Blaze513 | 1:94c648931f84 | 561 | |
Blaze513 | 1:94c648931f84 | 562 | case FS_FAT16 : |
Blaze513 | 1:94c648931f84 | 563 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); |
Blaze513 | 1:94c648931f84 | 564 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 565 | p = &fs->win[clst * 2 % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 566 | ST_WORD(p, (WORD)val); |
Blaze513 | 1:94c648931f84 | 567 | break; |
Blaze513 | 1:94c648931f84 | 568 | |
Blaze513 | 1:94c648931f84 | 569 | case FS_FAT32 : |
Blaze513 | 1:94c648931f84 | 570 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); |
Blaze513 | 1:94c648931f84 | 571 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 572 | p = &fs->win[clst * 4 % SS(fs)]; |
Blaze513 | 1:94c648931f84 | 573 | val |= LD_DWORD(p) & 0xF0000000; |
Blaze513 | 1:94c648931f84 | 574 | ST_DWORD(p, val); |
Blaze513 | 1:94c648931f84 | 575 | break; |
Blaze513 | 1:94c648931f84 | 576 | |
Blaze513 | 1:94c648931f84 | 577 | default : |
Blaze513 | 1:94c648931f84 | 578 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 579 | } |
Blaze513 | 1:94c648931f84 | 580 | fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 581 | } |
Blaze513 | 1:94c648931f84 | 582 | |
Blaze513 | 1:94c648931f84 | 583 | return res; |
Blaze513 | 1:94c648931f84 | 584 | } |
Blaze513 | 1:94c648931f84 | 585 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 586 | |
Blaze513 | 1:94c648931f84 | 587 | |
Blaze513 | 1:94c648931f84 | 588 | |
Blaze513 | 1:94c648931f84 | 589 | |
Blaze513 | 1:94c648931f84 | 590 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 591 | /* FAT handling - Remove a cluster chain */ |
Blaze513 | 1:94c648931f84 | 592 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 593 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 594 | static |
Blaze513 | 1:94c648931f84 | 595 | FRESULT remove_chain ( |
Blaze513 | 1:94c648931f84 | 596 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 597 | DWORD clst /* Cluster# to remove a chain from */ |
Blaze513 | 1:94c648931f84 | 598 | ) |
Blaze513 | 1:94c648931f84 | 599 | { |
Blaze513 | 1:94c648931f84 | 600 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 601 | DWORD nxt; |
Blaze513 | 1:94c648931f84 | 602 | |
Blaze513 | 1:94c648931f84 | 603 | |
Blaze513 | 1:94c648931f84 | 604 | if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ |
Blaze513 | 1:94c648931f84 | 605 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 606 | |
Blaze513 | 1:94c648931f84 | 607 | } else { |
Blaze513 | 1:94c648931f84 | 608 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 609 | while (clst < fs->n_fatent) { /* Not a last link? */ |
Blaze513 | 1:94c648931f84 | 610 | nxt = get_fat(fs, clst); /* Get cluster status */ |
Blaze513 | 1:94c648931f84 | 611 | if (nxt == 0) break; /* Empty cluster? */ |
Blaze513 | 1:94c648931f84 | 612 | if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */ |
Blaze513 | 1:94c648931f84 | 613 | if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */ |
Blaze513 | 1:94c648931f84 | 614 | res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */ |
Blaze513 | 1:94c648931f84 | 615 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 616 | if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */ |
Blaze513 | 1:94c648931f84 | 617 | fs->free_clust++; |
Blaze513 | 1:94c648931f84 | 618 | fs->fsi_flag = 1; |
Blaze513 | 1:94c648931f84 | 619 | } |
Blaze513 | 1:94c648931f84 | 620 | clst = nxt; /* Next cluster */ |
Blaze513 | 1:94c648931f84 | 621 | } |
Blaze513 | 1:94c648931f84 | 622 | } |
Blaze513 | 1:94c648931f84 | 623 | |
Blaze513 | 1:94c648931f84 | 624 | return res; |
Blaze513 | 1:94c648931f84 | 625 | } |
Blaze513 | 1:94c648931f84 | 626 | #endif |
Blaze513 | 1:94c648931f84 | 627 | |
Blaze513 | 1:94c648931f84 | 628 | |
Blaze513 | 1:94c648931f84 | 629 | |
Blaze513 | 1:94c648931f84 | 630 | |
Blaze513 | 1:94c648931f84 | 631 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 632 | /* FAT handling - Stretch or Create a cluster chain */ |
Blaze513 | 1:94c648931f84 | 633 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 634 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 635 | static |
Blaze513 | 1:94c648931f84 | 636 | DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ |
Blaze513 | 1:94c648931f84 | 637 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 638 | DWORD clst /* Cluster# to stretch. 0 means create a new chain. */ |
Blaze513 | 1:94c648931f84 | 639 | ) |
Blaze513 | 1:94c648931f84 | 640 | { |
Blaze513 | 1:94c648931f84 | 641 | DWORD cs, ncl, scl; |
Blaze513 | 1:94c648931f84 | 642 | |
Blaze513 | 1:94c648931f84 | 643 | |
Blaze513 | 1:94c648931f84 | 644 | if (clst == 0) { /* Create a new chain */ |
Blaze513 | 1:94c648931f84 | 645 | scl = fs->last_clust; /* Get suggested start point */ |
Blaze513 | 1:94c648931f84 | 646 | if (!scl || scl >= fs->n_fatent) scl = 1; |
Blaze513 | 1:94c648931f84 | 647 | } |
Blaze513 | 1:94c648931f84 | 648 | else { /* Stretch the current chain */ |
Blaze513 | 1:94c648931f84 | 649 | cs = get_fat(fs, clst); /* Check the cluster status */ |
Blaze513 | 1:94c648931f84 | 650 | if (cs < 2) return 1; /* It is an invalid cluster */ |
Blaze513 | 1:94c648931f84 | 651 | if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */ |
Blaze513 | 1:94c648931f84 | 652 | scl = clst; |
Blaze513 | 1:94c648931f84 | 653 | } |
Blaze513 | 1:94c648931f84 | 654 | |
Blaze513 | 1:94c648931f84 | 655 | ncl = scl; /* Start cluster */ |
Blaze513 | 1:94c648931f84 | 656 | for (;;) { |
Blaze513 | 1:94c648931f84 | 657 | ncl++; /* Next cluster */ |
Blaze513 | 1:94c648931f84 | 658 | if (ncl >= fs->n_fatent) { /* Wrap around */ |
Blaze513 | 1:94c648931f84 | 659 | ncl = 2; |
Blaze513 | 1:94c648931f84 | 660 | if (ncl > scl) return 0; /* No free cluster */ |
Blaze513 | 1:94c648931f84 | 661 | } |
Blaze513 | 1:94c648931f84 | 662 | cs = get_fat(fs, ncl); /* Get the cluster status */ |
Blaze513 | 1:94c648931f84 | 663 | if (cs == 0) break; /* Found a free cluster */ |
Blaze513 | 1:94c648931f84 | 664 | if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */ |
Blaze513 | 1:94c648931f84 | 665 | return cs; |
Blaze513 | 1:94c648931f84 | 666 | if (ncl == scl) return 0; /* No free cluster */ |
Blaze513 | 1:94c648931f84 | 667 | } |
Blaze513 | 1:94c648931f84 | 668 | |
Blaze513 | 1:94c648931f84 | 669 | if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */ |
Blaze513 | 1:94c648931f84 | 670 | return 0xFFFFFFFF; |
Blaze513 | 1:94c648931f84 | 671 | if (clst != 0) { /* Link it to the previous one if needed */ |
Blaze513 | 1:94c648931f84 | 672 | if (put_fat(fs, clst, ncl)) |
Blaze513 | 1:94c648931f84 | 673 | return 0xFFFFFFFF; |
Blaze513 | 1:94c648931f84 | 674 | } |
Blaze513 | 1:94c648931f84 | 675 | |
Blaze513 | 1:94c648931f84 | 676 | fs->last_clust = ncl; /* Update FSINFO */ |
Blaze513 | 1:94c648931f84 | 677 | if (fs->free_clust != 0xFFFFFFFF) { |
Blaze513 | 1:94c648931f84 | 678 | fs->free_clust--; |
Blaze513 | 1:94c648931f84 | 679 | fs->fsi_flag = 1; |
Blaze513 | 1:94c648931f84 | 680 | } |
Blaze513 | 1:94c648931f84 | 681 | |
Blaze513 | 1:94c648931f84 | 682 | return ncl; /* Return new cluster number */ |
Blaze513 | 1:94c648931f84 | 683 | } |
Blaze513 | 1:94c648931f84 | 684 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 685 | |
Blaze513 | 1:94c648931f84 | 686 | |
Blaze513 | 1:94c648931f84 | 687 | |
Blaze513 | 1:94c648931f84 | 688 | |
Blaze513 | 1:94c648931f84 | 689 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 690 | /* Get sector# from cluster# */ |
Blaze513 | 1:94c648931f84 | 691 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 692 | |
Blaze513 | 1:94c648931f84 | 693 | |
Blaze513 | 1:94c648931f84 | 694 | DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ |
Blaze513 | 1:94c648931f84 | 695 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 696 | DWORD clst /* Cluster# to be converted */ |
Blaze513 | 1:94c648931f84 | 697 | ) |
Blaze513 | 1:94c648931f84 | 698 | { |
Blaze513 | 1:94c648931f84 | 699 | clst -= 2; |
Blaze513 | 1:94c648931f84 | 700 | if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ |
Blaze513 | 1:94c648931f84 | 701 | return clst * fs->csize + fs->database; |
Blaze513 | 1:94c648931f84 | 702 | } |
Blaze513 | 1:94c648931f84 | 703 | |
Blaze513 | 1:94c648931f84 | 704 | |
Blaze513 | 1:94c648931f84 | 705 | |
Blaze513 | 1:94c648931f84 | 706 | |
Blaze513 | 1:94c648931f84 | 707 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 708 | /* Directory handling - Set directory index */ |
Blaze513 | 1:94c648931f84 | 709 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 710 | |
Blaze513 | 1:94c648931f84 | 711 | static |
Blaze513 | 1:94c648931f84 | 712 | FRESULT dir_sdi ( |
Blaze513 | 1:94c648931f84 | 713 | FAT_DIR *dj, /* Pointer to directory object */ |
Blaze513 | 1:94c648931f84 | 714 | WORD idx /* Directory index number */ |
Blaze513 | 1:94c648931f84 | 715 | ) |
Blaze513 | 1:94c648931f84 | 716 | { |
Blaze513 | 1:94c648931f84 | 717 | DWORD clst; |
Blaze513 | 1:94c648931f84 | 718 | WORD ic; |
Blaze513 | 1:94c648931f84 | 719 | |
Blaze513 | 1:94c648931f84 | 720 | |
Blaze513 | 1:94c648931f84 | 721 | dj->index = idx; |
Blaze513 | 1:94c648931f84 | 722 | clst = dj->sclust; |
Blaze513 | 1:94c648931f84 | 723 | if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */ |
Blaze513 | 1:94c648931f84 | 724 | return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 725 | if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */ |
Blaze513 | 1:94c648931f84 | 726 | clst = dj->fs->dirbase; |
Blaze513 | 1:94c648931f84 | 727 | |
Blaze513 | 1:94c648931f84 | 728 | if (clst == 0) { /* Static table */ |
Blaze513 | 1:94c648931f84 | 729 | dj->clust = clst; |
Blaze513 | 1:94c648931f84 | 730 | if (idx >= dj->fs->n_rootdir) /* Index is out of range */ |
Blaze513 | 1:94c648931f84 | 731 | return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 732 | dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */ |
Blaze513 | 1:94c648931f84 | 733 | } |
Blaze513 | 1:94c648931f84 | 734 | else { /* Dynamic table */ |
Blaze513 | 1:94c648931f84 | 735 | ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */ |
Blaze513 | 1:94c648931f84 | 736 | while (idx >= ic) { /* Follow cluster chain */ |
Blaze513 | 1:94c648931f84 | 737 | clst = get_fat(dj->fs, clst); /* Get next cluster */ |
Blaze513 | 1:94c648931f84 | 738 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ |
Blaze513 | 1:94c648931f84 | 739 | if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */ |
Blaze513 | 1:94c648931f84 | 740 | return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 741 | idx -= ic; |
Blaze513 | 1:94c648931f84 | 742 | } |
Blaze513 | 1:94c648931f84 | 743 | dj->clust = clst; |
Blaze513 | 1:94c648931f84 | 744 | dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */ |
Blaze513 | 1:94c648931f84 | 745 | } |
Blaze513 | 1:94c648931f84 | 746 | |
Blaze513 | 1:94c648931f84 | 747 | dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */ |
Blaze513 | 1:94c648931f84 | 748 | |
Blaze513 | 1:94c648931f84 | 749 | return FR_OK; /* Seek succeeded */ |
Blaze513 | 1:94c648931f84 | 750 | } |
Blaze513 | 1:94c648931f84 | 751 | |
Blaze513 | 1:94c648931f84 | 752 | |
Blaze513 | 1:94c648931f84 | 753 | |
Blaze513 | 1:94c648931f84 | 754 | |
Blaze513 | 1:94c648931f84 | 755 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 756 | /* Directory handling - Move directory index next */ |
Blaze513 | 1:94c648931f84 | 757 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 758 | |
Blaze513 | 1:94c648931f84 | 759 | static |
Blaze513 | 1:94c648931f84 | 760 | FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */ |
Blaze513 | 1:94c648931f84 | 761 | FAT_DIR *dj, /* Pointer to directory object */ |
Blaze513 | 1:94c648931f84 | 762 | int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ |
Blaze513 | 1:94c648931f84 | 763 | ) |
Blaze513 | 1:94c648931f84 | 764 | { |
Blaze513 | 1:94c648931f84 | 765 | DWORD clst; |
Blaze513 | 1:94c648931f84 | 766 | WORD i; |
Blaze513 | 1:94c648931f84 | 767 | |
Blaze513 | 1:94c648931f84 | 768 | |
Blaze513 | 1:94c648931f84 | 769 | i = dj->index + 1; |
Blaze513 | 1:94c648931f84 | 770 | if (!i || !dj->sect) /* Report EOT when index has reached 65535 */ |
Blaze513 | 1:94c648931f84 | 771 | return FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 772 | |
Blaze513 | 1:94c648931f84 | 773 | if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */ |
Blaze513 | 1:94c648931f84 | 774 | dj->sect++; /* Next sector */ |
Blaze513 | 1:94c648931f84 | 775 | |
Blaze513 | 1:94c648931f84 | 776 | if (dj->clust == 0) { /* Static table */ |
Blaze513 | 1:94c648931f84 | 777 | if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */ |
Blaze513 | 1:94c648931f84 | 778 | return FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 779 | } |
Blaze513 | 1:94c648931f84 | 780 | else { /* Dynamic table */ |
Blaze513 | 1:94c648931f84 | 781 | if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */ |
Blaze513 | 1:94c648931f84 | 782 | clst = get_fat(dj->fs, dj->clust); /* Get next cluster */ |
Blaze513 | 1:94c648931f84 | 783 | if (clst <= 1) return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 784 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 785 | if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */ |
Blaze513 | 1:94c648931f84 | 786 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 787 | BYTE c; |
Blaze513 | 1:94c648931f84 | 788 | if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */ |
Blaze513 | 1:94c648931f84 | 789 | clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */ |
Blaze513 | 1:94c648931f84 | 790 | if (clst == 0) return FR_DENIED; /* No free cluster */ |
Blaze513 | 1:94c648931f84 | 791 | if (clst == 1) return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 792 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 793 | /* Clean-up stretched table */ |
Blaze513 | 1:94c648931f84 | 794 | if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */ |
Blaze513 | 1:94c648931f84 | 795 | mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */ |
Blaze513 | 1:94c648931f84 | 796 | dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */ |
Blaze513 | 1:94c648931f84 | 797 | for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */ |
Blaze513 | 1:94c648931f84 | 798 | dj->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 799 | if (move_window(dj->fs, 0)) return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 800 | dj->fs->winsect++; |
Blaze513 | 1:94c648931f84 | 801 | } |
Blaze513 | 1:94c648931f84 | 802 | dj->fs->winsect -= c; /* Rewind window address */ |
Blaze513 | 1:94c648931f84 | 803 | #else |
Blaze513 | 1:94c648931f84 | 804 | return FR_NO_FILE; /* Report EOT */ |
Blaze513 | 1:94c648931f84 | 805 | #endif |
Blaze513 | 1:94c648931f84 | 806 | } |
Blaze513 | 1:94c648931f84 | 807 | dj->clust = clst; /* Initialize data for new cluster */ |
Blaze513 | 1:94c648931f84 | 808 | dj->sect = clust2sect(dj->fs, clst); |
Blaze513 | 1:94c648931f84 | 809 | } |
Blaze513 | 1:94c648931f84 | 810 | } |
Blaze513 | 1:94c648931f84 | 811 | } |
Blaze513 | 1:94c648931f84 | 812 | |
Blaze513 | 1:94c648931f84 | 813 | dj->index = i; |
Blaze513 | 1:94c648931f84 | 814 | dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32; |
Blaze513 | 1:94c648931f84 | 815 | |
Blaze513 | 1:94c648931f84 | 816 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 817 | } |
Blaze513 | 1:94c648931f84 | 818 | |
Blaze513 | 1:94c648931f84 | 819 | |
Blaze513 | 1:94c648931f84 | 820 | |
Blaze513 | 1:94c648931f84 | 821 | |
Blaze513 | 1:94c648931f84 | 822 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 823 | /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */ |
Blaze513 | 1:94c648931f84 | 824 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 825 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 826 | static |
Blaze513 | 1:94c648931f84 | 827 | const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */ |
Blaze513 | 1:94c648931f84 | 828 | |
Blaze513 | 1:94c648931f84 | 829 | |
Blaze513 | 1:94c648931f84 | 830 | static |
Blaze513 | 1:94c648931f84 | 831 | int cmp_lfn ( /* 1:Matched, 0:Not matched */ |
Blaze513 | 1:94c648931f84 | 832 | WCHAR *lfnbuf, /* Pointer to the LFN to be compared */ |
Blaze513 | 1:94c648931f84 | 833 | BYTE *dir /* Pointer to the directory entry containing a part of LFN */ |
Blaze513 | 1:94c648931f84 | 834 | ) |
Blaze513 | 1:94c648931f84 | 835 | { |
Blaze513 | 1:94c648931f84 | 836 | int i, s; |
Blaze513 | 1:94c648931f84 | 837 | WCHAR wc, uc; |
Blaze513 | 1:94c648931f84 | 838 | |
Blaze513 | 1:94c648931f84 | 839 | |
Blaze513 | 1:94c648931f84 | 840 | i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */ |
Blaze513 | 1:94c648931f84 | 841 | s = 0; wc = 1; |
Blaze513 | 1:94c648931f84 | 842 | do { |
Blaze513 | 1:94c648931f84 | 843 | uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ |
Blaze513 | 1:94c648931f84 | 844 | if (wc) { /* Last char has not been processed */ |
Blaze513 | 1:94c648931f84 | 845 | wc = ff_wtoupper(uc); /* Convert it to upper case */ |
Blaze513 | 1:94c648931f84 | 846 | if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */ |
Blaze513 | 1:94c648931f84 | 847 | return 0; /* Not matched */ |
Blaze513 | 1:94c648931f84 | 848 | } else { |
Blaze513 | 1:94c648931f84 | 849 | if (uc != 0xFFFF) return 0; /* Check filler */ |
Blaze513 | 1:94c648931f84 | 850 | } |
Blaze513 | 1:94c648931f84 | 851 | } while (++s < 13); /* Repeat until all chars in the entry are checked */ |
Blaze513 | 1:94c648931f84 | 852 | |
Blaze513 | 1:94c648931f84 | 853 | if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */ |
Blaze513 | 1:94c648931f84 | 854 | return 0; |
Blaze513 | 1:94c648931f84 | 855 | |
Blaze513 | 1:94c648931f84 | 856 | return 1; /* The part of LFN matched */ |
Blaze513 | 1:94c648931f84 | 857 | } |
Blaze513 | 1:94c648931f84 | 858 | |
Blaze513 | 1:94c648931f84 | 859 | |
Blaze513 | 1:94c648931f84 | 860 | |
Blaze513 | 1:94c648931f84 | 861 | static |
Blaze513 | 1:94c648931f84 | 862 | int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */ |
Blaze513 | 1:94c648931f84 | 863 | WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */ |
Blaze513 | 1:94c648931f84 | 864 | BYTE *dir /* Pointer to the directory entry */ |
Blaze513 | 1:94c648931f84 | 865 | ) |
Blaze513 | 1:94c648931f84 | 866 | { |
Blaze513 | 1:94c648931f84 | 867 | int i, s; |
Blaze513 | 1:94c648931f84 | 868 | WCHAR wc, uc; |
Blaze513 | 1:94c648931f84 | 869 | |
Blaze513 | 1:94c648931f84 | 870 | |
Blaze513 | 1:94c648931f84 | 871 | i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ |
Blaze513 | 1:94c648931f84 | 872 | |
Blaze513 | 1:94c648931f84 | 873 | s = 0; wc = 1; |
Blaze513 | 1:94c648931f84 | 874 | do { |
Blaze513 | 1:94c648931f84 | 875 | uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ |
Blaze513 | 1:94c648931f84 | 876 | if (wc) { /* Last char has not been processed */ |
Blaze513 | 1:94c648931f84 | 877 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
Blaze513 | 1:94c648931f84 | 878 | lfnbuf[i++] = wc = uc; /* Store it */ |
Blaze513 | 1:94c648931f84 | 879 | } else { |
Blaze513 | 1:94c648931f84 | 880 | if (uc != 0xFFFF) return 0; /* Check filler */ |
Blaze513 | 1:94c648931f84 | 881 | } |
Blaze513 | 1:94c648931f84 | 882 | } while (++s < 13); /* Read all character in the entry */ |
Blaze513 | 1:94c648931f84 | 883 | |
Blaze513 | 1:94c648931f84 | 884 | if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */ |
Blaze513 | 1:94c648931f84 | 885 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
Blaze513 | 1:94c648931f84 | 886 | lfnbuf[i] = 0; |
Blaze513 | 1:94c648931f84 | 887 | } |
Blaze513 | 1:94c648931f84 | 888 | |
Blaze513 | 1:94c648931f84 | 889 | return 1; |
Blaze513 | 1:94c648931f84 | 890 | } |
Blaze513 | 1:94c648931f84 | 891 | |
Blaze513 | 1:94c648931f84 | 892 | |
Blaze513 | 1:94c648931f84 | 893 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 894 | static |
Blaze513 | 1:94c648931f84 | 895 | void fit_lfn ( |
Blaze513 | 1:94c648931f84 | 896 | const WCHAR *lfnbuf, /* Pointer to the LFN buffer */ |
Blaze513 | 1:94c648931f84 | 897 | BYTE *dir, /* Pointer to the directory entry */ |
Blaze513 | 1:94c648931f84 | 898 | BYTE ord, /* LFN order (1-20) */ |
Blaze513 | 1:94c648931f84 | 899 | BYTE sum /* SFN sum */ |
Blaze513 | 1:94c648931f84 | 900 | ) |
Blaze513 | 1:94c648931f84 | 901 | { |
Blaze513 | 1:94c648931f84 | 902 | int i, s; |
Blaze513 | 1:94c648931f84 | 903 | WCHAR wc; |
Blaze513 | 1:94c648931f84 | 904 | |
Blaze513 | 1:94c648931f84 | 905 | |
Blaze513 | 1:94c648931f84 | 906 | dir[LDIR_Chksum] = sum; /* Set check sum */ |
Blaze513 | 1:94c648931f84 | 907 | dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ |
Blaze513 | 1:94c648931f84 | 908 | dir[LDIR_Type] = 0; |
Blaze513 | 1:94c648931f84 | 909 | ST_WORD(dir+LDIR_FstClusLO, 0); |
Blaze513 | 1:94c648931f84 | 910 | |
Blaze513 | 1:94c648931f84 | 911 | i = (ord - 1) * 13; /* Get offset in the LFN buffer */ |
Blaze513 | 1:94c648931f84 | 912 | s = wc = 0; |
Blaze513 | 1:94c648931f84 | 913 | do { |
Blaze513 | 1:94c648931f84 | 914 | if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */ |
Blaze513 | 1:94c648931f84 | 915 | ST_WORD(dir+LfnOfs[s], wc); /* Put it */ |
Blaze513 | 1:94c648931f84 | 916 | if (!wc) wc = 0xFFFF; /* Padding chars following last char */ |
Blaze513 | 1:94c648931f84 | 917 | } while (++s < 13); |
Blaze513 | 1:94c648931f84 | 918 | if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */ |
Blaze513 | 1:94c648931f84 | 919 | dir[LDIR_Ord] = ord; /* Set the LFN order */ |
Blaze513 | 1:94c648931f84 | 920 | } |
Blaze513 | 1:94c648931f84 | 921 | |
Blaze513 | 1:94c648931f84 | 922 | #endif |
Blaze513 | 1:94c648931f84 | 923 | #endif |
Blaze513 | 1:94c648931f84 | 924 | |
Blaze513 | 1:94c648931f84 | 925 | |
Blaze513 | 1:94c648931f84 | 926 | |
Blaze513 | 1:94c648931f84 | 927 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 928 | /* Create numbered name */ |
Blaze513 | 1:94c648931f84 | 929 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 930 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 931 | void gen_numname ( |
Blaze513 | 1:94c648931f84 | 932 | BYTE *dst, /* Pointer to generated SFN */ |
Blaze513 | 1:94c648931f84 | 933 | const BYTE *src, /* Pointer to source SFN to be modified */ |
Blaze513 | 1:94c648931f84 | 934 | const WCHAR *lfn, /* Pointer to LFN */ |
Blaze513 | 1:94c648931f84 | 935 | WORD seq /* Sequence number */ |
Blaze513 | 1:94c648931f84 | 936 | ) |
Blaze513 | 1:94c648931f84 | 937 | { |
Blaze513 | 1:94c648931f84 | 938 | BYTE ns[8], c; |
Blaze513 | 1:94c648931f84 | 939 | int i, j; |
Blaze513 | 1:94c648931f84 | 940 | |
Blaze513 | 1:94c648931f84 | 941 | |
Blaze513 | 1:94c648931f84 | 942 | mem_cpy(dst, src, 11); |
Blaze513 | 1:94c648931f84 | 943 | |
Blaze513 | 1:94c648931f84 | 944 | if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */ |
Blaze513 | 1:94c648931f84 | 945 | do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn); |
Blaze513 | 1:94c648931f84 | 946 | } |
Blaze513 | 1:94c648931f84 | 947 | |
Blaze513 | 1:94c648931f84 | 948 | /* itoa */ |
Blaze513 | 1:94c648931f84 | 949 | i = 7; |
Blaze513 | 1:94c648931f84 | 950 | do { |
Blaze513 | 1:94c648931f84 | 951 | c = (seq % 16) + '0'; |
Blaze513 | 1:94c648931f84 | 952 | if (c > '9') c += 7; |
Blaze513 | 1:94c648931f84 | 953 | ns[i--] = c; |
Blaze513 | 1:94c648931f84 | 954 | seq /= 16; |
Blaze513 | 1:94c648931f84 | 955 | } while (seq); |
Blaze513 | 1:94c648931f84 | 956 | ns[i] = '~'; |
Blaze513 | 1:94c648931f84 | 957 | |
Blaze513 | 1:94c648931f84 | 958 | /* Append the number */ |
Blaze513 | 1:94c648931f84 | 959 | for (j = 0; j < i && dst[j] != ' '; j++) { |
Blaze513 | 1:94c648931f84 | 960 | if (IsDBCS1(dst[j])) { |
Blaze513 | 1:94c648931f84 | 961 | if (j == i - 1) break; |
Blaze513 | 1:94c648931f84 | 962 | j++; |
Blaze513 | 1:94c648931f84 | 963 | } |
Blaze513 | 1:94c648931f84 | 964 | } |
Blaze513 | 1:94c648931f84 | 965 | do { |
Blaze513 | 1:94c648931f84 | 966 | dst[j++] = (i < 8) ? ns[i++] : ' '; |
Blaze513 | 1:94c648931f84 | 967 | } while (j < 8); |
Blaze513 | 1:94c648931f84 | 968 | } |
Blaze513 | 1:94c648931f84 | 969 | #endif |
Blaze513 | 1:94c648931f84 | 970 | |
Blaze513 | 1:94c648931f84 | 971 | |
Blaze513 | 1:94c648931f84 | 972 | |
Blaze513 | 1:94c648931f84 | 973 | |
Blaze513 | 1:94c648931f84 | 974 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 975 | /* Calculate sum of an SFN */ |
Blaze513 | 1:94c648931f84 | 976 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 977 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 978 | static |
Blaze513 | 1:94c648931f84 | 979 | BYTE sum_sfn ( |
Blaze513 | 1:94c648931f84 | 980 | const BYTE *dir /* Ptr to directory entry */ |
Blaze513 | 1:94c648931f84 | 981 | ) |
Blaze513 | 1:94c648931f84 | 982 | { |
Blaze513 | 1:94c648931f84 | 983 | BYTE sum = 0; |
Blaze513 | 1:94c648931f84 | 984 | int n = 11; |
Blaze513 | 1:94c648931f84 | 985 | |
Blaze513 | 1:94c648931f84 | 986 | do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n); |
Blaze513 | 1:94c648931f84 | 987 | return sum; |
Blaze513 | 1:94c648931f84 | 988 | } |
Blaze513 | 1:94c648931f84 | 989 | #endif |
Blaze513 | 1:94c648931f84 | 990 | |
Blaze513 | 1:94c648931f84 | 991 | |
Blaze513 | 1:94c648931f84 | 992 | |
Blaze513 | 1:94c648931f84 | 993 | |
Blaze513 | 1:94c648931f84 | 994 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 995 | /* Directory handling - Find an object in the directory */ |
Blaze513 | 1:94c648931f84 | 996 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 997 | |
Blaze513 | 1:94c648931f84 | 998 | static |
Blaze513 | 1:94c648931f84 | 999 | FRESULT dir_find ( |
Blaze513 | 1:94c648931f84 | 1000 | FAT_DIR *dj /* Pointer to the directory object linked to the file name */ |
Blaze513 | 1:94c648931f84 | 1001 | ) |
Blaze513 | 1:94c648931f84 | 1002 | { |
Blaze513 | 1:94c648931f84 | 1003 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1004 | BYTE c, *dir; |
Blaze513 | 1:94c648931f84 | 1005 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 1006 | BYTE a, ord, sum; |
Blaze513 | 1:94c648931f84 | 1007 | #endif |
Blaze513 | 1:94c648931f84 | 1008 | |
Blaze513 | 1:94c648931f84 | 1009 | res = dir_sdi(dj, 0); /* Rewind directory object */ |
Blaze513 | 1:94c648931f84 | 1010 | if (res != FR_OK) return res; |
Blaze513 | 1:94c648931f84 | 1011 | |
Blaze513 | 1:94c648931f84 | 1012 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 1013 | ord = sum = 0xFF; |
Blaze513 | 1:94c648931f84 | 1014 | #endif |
Blaze513 | 1:94c648931f84 | 1015 | do { |
Blaze513 | 1:94c648931f84 | 1016 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1017 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1018 | dir = dj->dir; /* Ptr to the directory entry of current index */ |
Blaze513 | 1:94c648931f84 | 1019 | c = dir[DIR_Name]; |
Blaze513 | 1:94c648931f84 | 1020 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
Blaze513 | 1:94c648931f84 | 1021 | #if _USE_LFN /* LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1022 | a = dir[DIR_Attr] & AM_MASK; |
Blaze513 | 1:94c648931f84 | 1023 | if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ |
Blaze513 | 1:94c648931f84 | 1024 | ord = 0xFF; |
Blaze513 | 1:94c648931f84 | 1025 | } else { |
Blaze513 | 1:94c648931f84 | 1026 | if (a == AM_LFN) { /* An LFN entry is found */ |
Blaze513 | 1:94c648931f84 | 1027 | if (dj->lfn) { |
Blaze513 | 1:94c648931f84 | 1028 | if (c & 0x40) { /* Is it start of LFN sequence? */ |
Blaze513 | 1:94c648931f84 | 1029 | sum = dir[LDIR_Chksum]; |
Blaze513 | 1:94c648931f84 | 1030 | c &= 0xBF; ord = c; /* LFN start order */ |
Blaze513 | 1:94c648931f84 | 1031 | dj->lfn_idx = dj->index; |
Blaze513 | 1:94c648931f84 | 1032 | } |
Blaze513 | 1:94c648931f84 | 1033 | /* Check validity of the LFN entry and compare it with given name */ |
Blaze513 | 1:94c648931f84 | 1034 | ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; |
Blaze513 | 1:94c648931f84 | 1035 | } |
Blaze513 | 1:94c648931f84 | 1036 | } else { /* An SFN entry is found */ |
Blaze513 | 1:94c648931f84 | 1037 | if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */ |
Blaze513 | 1:94c648931f84 | 1038 | ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */ |
Blaze513 | 1:94c648931f84 | 1039 | if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */ |
Blaze513 | 1:94c648931f84 | 1040 | } |
Blaze513 | 1:94c648931f84 | 1041 | } |
Blaze513 | 1:94c648931f84 | 1042 | #else /* Non LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1043 | if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */ |
Blaze513 | 1:94c648931f84 | 1044 | break; |
Blaze513 | 1:94c648931f84 | 1045 | #endif |
Blaze513 | 1:94c648931f84 | 1046 | res = dir_next(dj, 0); /* Next entry */ |
Blaze513 | 1:94c648931f84 | 1047 | } while (res == FR_OK); |
Blaze513 | 1:94c648931f84 | 1048 | |
Blaze513 | 1:94c648931f84 | 1049 | return res; |
Blaze513 | 1:94c648931f84 | 1050 | } |
Blaze513 | 1:94c648931f84 | 1051 | |
Blaze513 | 1:94c648931f84 | 1052 | |
Blaze513 | 1:94c648931f84 | 1053 | |
Blaze513 | 1:94c648931f84 | 1054 | |
Blaze513 | 1:94c648931f84 | 1055 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1056 | /* Read an object from the directory */ |
Blaze513 | 1:94c648931f84 | 1057 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1058 | #if _FS_MINIMIZE <= 1 |
Blaze513 | 1:94c648931f84 | 1059 | static |
Blaze513 | 1:94c648931f84 | 1060 | FRESULT dir_read ( |
Blaze513 | 1:94c648931f84 | 1061 | FAT_DIR *dj /* Pointer to the directory object that pointing the entry to be read */ |
Blaze513 | 1:94c648931f84 | 1062 | ) |
Blaze513 | 1:94c648931f84 | 1063 | { |
Blaze513 | 1:94c648931f84 | 1064 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1065 | BYTE c, *dir; |
Blaze513 | 1:94c648931f84 | 1066 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 1067 | BYTE a, ord = 0xFF, sum = 0xFF; |
Blaze513 | 1:94c648931f84 | 1068 | #endif |
Blaze513 | 1:94c648931f84 | 1069 | |
Blaze513 | 1:94c648931f84 | 1070 | res = FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 1071 | while (dj->sect) { |
Blaze513 | 1:94c648931f84 | 1072 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1073 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1074 | dir = dj->dir; /* Ptr to the directory entry of current index */ |
Blaze513 | 1:94c648931f84 | 1075 | c = dir[DIR_Name]; |
Blaze513 | 1:94c648931f84 | 1076 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
Blaze513 | 1:94c648931f84 | 1077 | #if _USE_LFN /* LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1078 | a = dir[DIR_Attr] & AM_MASK; |
Blaze513 | 1:94c648931f84 | 1079 | if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ |
Blaze513 | 1:94c648931f84 | 1080 | ord = 0xFF; |
Blaze513 | 1:94c648931f84 | 1081 | } else { |
Blaze513 | 1:94c648931f84 | 1082 | if (a == AM_LFN) { /* An LFN entry is found */ |
Blaze513 | 1:94c648931f84 | 1083 | if (c & 0x40) { /* Is it start of LFN sequence? */ |
Blaze513 | 1:94c648931f84 | 1084 | sum = dir[LDIR_Chksum]; |
Blaze513 | 1:94c648931f84 | 1085 | c &= 0xBF; ord = c; |
Blaze513 | 1:94c648931f84 | 1086 | dj->lfn_idx = dj->index; |
Blaze513 | 1:94c648931f84 | 1087 | } |
Blaze513 | 1:94c648931f84 | 1088 | /* Check LFN validity and capture it */ |
Blaze513 | 1:94c648931f84 | 1089 | ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF; |
Blaze513 | 1:94c648931f84 | 1090 | } else { /* An SFN entry is found */ |
Blaze513 | 1:94c648931f84 | 1091 | if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */ |
Blaze513 | 1:94c648931f84 | 1092 | dj->lfn_idx = 0xFFFF; /* It has no LFN. */ |
Blaze513 | 1:94c648931f84 | 1093 | break; |
Blaze513 | 1:94c648931f84 | 1094 | } |
Blaze513 | 1:94c648931f84 | 1095 | } |
Blaze513 | 1:94c648931f84 | 1096 | #else /* Non LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1097 | if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */ |
Blaze513 | 1:94c648931f84 | 1098 | break; |
Blaze513 | 1:94c648931f84 | 1099 | #endif |
Blaze513 | 1:94c648931f84 | 1100 | res = dir_next(dj, 0); /* Next entry */ |
Blaze513 | 1:94c648931f84 | 1101 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1102 | } |
Blaze513 | 1:94c648931f84 | 1103 | |
Blaze513 | 1:94c648931f84 | 1104 | if (res != FR_OK) dj->sect = 0; |
Blaze513 | 1:94c648931f84 | 1105 | |
Blaze513 | 1:94c648931f84 | 1106 | return res; |
Blaze513 | 1:94c648931f84 | 1107 | } |
Blaze513 | 1:94c648931f84 | 1108 | #endif |
Blaze513 | 1:94c648931f84 | 1109 | |
Blaze513 | 1:94c648931f84 | 1110 | |
Blaze513 | 1:94c648931f84 | 1111 | |
Blaze513 | 1:94c648931f84 | 1112 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1113 | /* Register an object to the directory */ |
Blaze513 | 1:94c648931f84 | 1114 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1115 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 1116 | static |
Blaze513 | 1:94c648931f84 | 1117 | FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */ |
Blaze513 | 1:94c648931f84 | 1118 | FAT_DIR *dj /* Target directory with object name to be created */ |
Blaze513 | 1:94c648931f84 | 1119 | ) |
Blaze513 | 1:94c648931f84 | 1120 | { |
Blaze513 | 1:94c648931f84 | 1121 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1122 | BYTE c, *dir; |
Blaze513 | 1:94c648931f84 | 1123 | #if _USE_LFN /* LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1124 | WORD n, ne, is; |
Blaze513 | 1:94c648931f84 | 1125 | BYTE sn[12], *fn, sum; |
Blaze513 | 1:94c648931f84 | 1126 | WCHAR *lfn; |
Blaze513 | 1:94c648931f84 | 1127 | |
Blaze513 | 1:94c648931f84 | 1128 | |
Blaze513 | 1:94c648931f84 | 1129 | fn = dj->fn; lfn = dj->lfn; |
Blaze513 | 1:94c648931f84 | 1130 | mem_cpy(sn, fn, 12); |
Blaze513 | 1:94c648931f84 | 1131 | |
Blaze513 | 1:94c648931f84 | 1132 | if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */ |
Blaze513 | 1:94c648931f84 | 1133 | |
Blaze513 | 1:94c648931f84 | 1134 | if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ |
Blaze513 | 1:94c648931f84 | 1135 | fn[NS] = 0; dj->lfn = 0; /* Find only SFN */ |
Blaze513 | 1:94c648931f84 | 1136 | for (n = 1; n < 100; n++) { |
Blaze513 | 1:94c648931f84 | 1137 | gen_numname(fn, sn, lfn, n); /* Generate a numbered name */ |
Blaze513 | 1:94c648931f84 | 1138 | res = dir_find(dj); /* Check if the name collides with existing SFN */ |
Blaze513 | 1:94c648931f84 | 1139 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1140 | } |
Blaze513 | 1:94c648931f84 | 1141 | if (n == 100) return FR_DENIED; /* Abort if too many collisions */ |
Blaze513 | 1:94c648931f84 | 1142 | if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */ |
Blaze513 | 1:94c648931f84 | 1143 | fn[NS] = sn[NS]; dj->lfn = lfn; |
Blaze513 | 1:94c648931f84 | 1144 | } |
Blaze513 | 1:94c648931f84 | 1145 | |
Blaze513 | 1:94c648931f84 | 1146 | if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */ |
Blaze513 | 1:94c648931f84 | 1147 | for (ne = 0; lfn[ne]; ne++) ; |
Blaze513 | 1:94c648931f84 | 1148 | ne = (ne + 25) / 13; |
Blaze513 | 1:94c648931f84 | 1149 | } else { /* Otherwise reserve only an SFN entry. */ |
Blaze513 | 1:94c648931f84 | 1150 | ne = 1; |
Blaze513 | 1:94c648931f84 | 1151 | } |
Blaze513 | 1:94c648931f84 | 1152 | |
Blaze513 | 1:94c648931f84 | 1153 | /* Reserve contiguous entries */ |
Blaze513 | 1:94c648931f84 | 1154 | res = dir_sdi(dj, 0); |
Blaze513 | 1:94c648931f84 | 1155 | if (res != FR_OK) return res; |
Blaze513 | 1:94c648931f84 | 1156 | n = is = 0; |
Blaze513 | 1:94c648931f84 | 1157 | do { |
Blaze513 | 1:94c648931f84 | 1158 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1159 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1160 | c = *dj->dir; /* Check the entry status */ |
Blaze513 | 1:94c648931f84 | 1161 | if (c == 0xE5 || c == 0) { /* Is it a blank entry? */ |
Blaze513 | 1:94c648931f84 | 1162 | if (n == 0) is = dj->index; /* First index of the contiguous entry */ |
Blaze513 | 1:94c648931f84 | 1163 | if (++n == ne) break; /* A contiguous entry that required count is found */ |
Blaze513 | 1:94c648931f84 | 1164 | } else { |
Blaze513 | 1:94c648931f84 | 1165 | n = 0; /* Not a blank entry. Restart to search */ |
Blaze513 | 1:94c648931f84 | 1166 | } |
Blaze513 | 1:94c648931f84 | 1167 | res = dir_next(dj, 1); /* Next entry with table stretch */ |
Blaze513 | 1:94c648931f84 | 1168 | } while (res == FR_OK); |
Blaze513 | 1:94c648931f84 | 1169 | |
Blaze513 | 1:94c648931f84 | 1170 | if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */ |
Blaze513 | 1:94c648931f84 | 1171 | res = dir_sdi(dj, is); |
Blaze513 | 1:94c648931f84 | 1172 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1173 | sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */ |
Blaze513 | 1:94c648931f84 | 1174 | ne--; |
Blaze513 | 1:94c648931f84 | 1175 | do { /* Store LFN entries in bottom first */ |
Blaze513 | 1:94c648931f84 | 1176 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1177 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1178 | fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum); |
Blaze513 | 1:94c648931f84 | 1179 | dj->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 1180 | res = dir_next(dj, 0); /* Next entry */ |
Blaze513 | 1:94c648931f84 | 1181 | } while (res == FR_OK && --ne); |
Blaze513 | 1:94c648931f84 | 1182 | } |
Blaze513 | 1:94c648931f84 | 1183 | } |
Blaze513 | 1:94c648931f84 | 1184 | |
Blaze513 | 1:94c648931f84 | 1185 | #else /* Non LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1186 | res = dir_sdi(dj, 0); |
Blaze513 | 1:94c648931f84 | 1187 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1188 | do { /* Find a blank entry for the SFN */ |
Blaze513 | 1:94c648931f84 | 1189 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1190 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1191 | c = *dj->dir; |
Blaze513 | 1:94c648931f84 | 1192 | if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */ |
Blaze513 | 1:94c648931f84 | 1193 | res = dir_next(dj, 1); /* Next entry with table stretch */ |
Blaze513 | 1:94c648931f84 | 1194 | } while (res == FR_OK); |
Blaze513 | 1:94c648931f84 | 1195 | } |
Blaze513 | 1:94c648931f84 | 1196 | #endif |
Blaze513 | 1:94c648931f84 | 1197 | |
Blaze513 | 1:94c648931f84 | 1198 | if (res == FR_OK) { /* Initialize the SFN entry */ |
Blaze513 | 1:94c648931f84 | 1199 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1200 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1201 | dir = dj->dir; |
Blaze513 | 1:94c648931f84 | 1202 | mem_set(dir, 0, 32); /* Clean the entry */ |
Blaze513 | 1:94c648931f84 | 1203 | mem_cpy(dir, dj->fn, 11); /* Put SFN */ |
Blaze513 | 1:94c648931f84 | 1204 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 1205 | dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */ |
Blaze513 | 1:94c648931f84 | 1206 | #endif |
Blaze513 | 1:94c648931f84 | 1207 | dj->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 1208 | } |
Blaze513 | 1:94c648931f84 | 1209 | } |
Blaze513 | 1:94c648931f84 | 1210 | |
Blaze513 | 1:94c648931f84 | 1211 | return res; |
Blaze513 | 1:94c648931f84 | 1212 | } |
Blaze513 | 1:94c648931f84 | 1213 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 1214 | |
Blaze513 | 1:94c648931f84 | 1215 | |
Blaze513 | 1:94c648931f84 | 1216 | |
Blaze513 | 1:94c648931f84 | 1217 | |
Blaze513 | 1:94c648931f84 | 1218 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1219 | /* Remove an object from the directory */ |
Blaze513 | 1:94c648931f84 | 1220 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1221 | #if !_FS_READONLY && !_FS_MINIMIZE |
Blaze513 | 1:94c648931f84 | 1222 | static |
Blaze513 | 1:94c648931f84 | 1223 | FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ |
Blaze513 | 1:94c648931f84 | 1224 | FAT_DIR *dj /* Directory object pointing the entry to be removed */ |
Blaze513 | 1:94c648931f84 | 1225 | ) |
Blaze513 | 1:94c648931f84 | 1226 | { |
Blaze513 | 1:94c648931f84 | 1227 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1228 | #if _USE_LFN /* LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1229 | WORD i; |
Blaze513 | 1:94c648931f84 | 1230 | |
Blaze513 | 1:94c648931f84 | 1231 | i = dj->index; /* SFN index */ |
Blaze513 | 1:94c648931f84 | 1232 | res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */ |
Blaze513 | 1:94c648931f84 | 1233 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1234 | do { |
Blaze513 | 1:94c648931f84 | 1235 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1236 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1237 | *dj->dir = 0xE5; /* Mark the entry "deleted" */ |
Blaze513 | 1:94c648931f84 | 1238 | dj->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 1239 | if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */ |
Blaze513 | 1:94c648931f84 | 1240 | res = dir_next(dj, 0); /* Next entry */ |
Blaze513 | 1:94c648931f84 | 1241 | } while (res == FR_OK); |
Blaze513 | 1:94c648931f84 | 1242 | if (res == FR_NO_FILE) res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 1243 | } |
Blaze513 | 1:94c648931f84 | 1244 | |
Blaze513 | 1:94c648931f84 | 1245 | #else /* Non LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1246 | res = dir_sdi(dj, dj->index); |
Blaze513 | 1:94c648931f84 | 1247 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1248 | res = move_window(dj->fs, dj->sect); |
Blaze513 | 1:94c648931f84 | 1249 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1250 | *dj->dir = 0xE5; /* Mark the entry "deleted" */ |
Blaze513 | 1:94c648931f84 | 1251 | dj->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 1252 | } |
Blaze513 | 1:94c648931f84 | 1253 | } |
Blaze513 | 1:94c648931f84 | 1254 | #endif |
Blaze513 | 1:94c648931f84 | 1255 | |
Blaze513 | 1:94c648931f84 | 1256 | return res; |
Blaze513 | 1:94c648931f84 | 1257 | } |
Blaze513 | 1:94c648931f84 | 1258 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 1259 | |
Blaze513 | 1:94c648931f84 | 1260 | |
Blaze513 | 1:94c648931f84 | 1261 | |
Blaze513 | 1:94c648931f84 | 1262 | |
Blaze513 | 1:94c648931f84 | 1263 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1264 | /* Pick a segment and create the object name in directory form */ |
Blaze513 | 1:94c648931f84 | 1265 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1266 | |
Blaze513 | 1:94c648931f84 | 1267 | static |
Blaze513 | 1:94c648931f84 | 1268 | FRESULT create_name ( |
Blaze513 | 1:94c648931f84 | 1269 | FAT_DIR *dj, /* Pointer to the directory object */ |
Blaze513 | 1:94c648931f84 | 1270 | const TCHAR **path /* Pointer to pointer to the segment in the path string */ |
Blaze513 | 1:94c648931f84 | 1271 | ) |
Blaze513 | 1:94c648931f84 | 1272 | { |
Blaze513 | 1:94c648931f84 | 1273 | #ifdef _EXCVT |
Blaze513 | 1:94c648931f84 | 1274 | static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */ |
Blaze513 | 1:94c648931f84 | 1275 | #endif |
Blaze513 | 1:94c648931f84 | 1276 | |
Blaze513 | 1:94c648931f84 | 1277 | #if _USE_LFN /* LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1278 | BYTE b, cf; |
Blaze513 | 1:94c648931f84 | 1279 | WCHAR w, *lfn; |
Blaze513 | 1:94c648931f84 | 1280 | int i, ni, si, di; |
Blaze513 | 1:94c648931f84 | 1281 | const TCHAR *p; |
Blaze513 | 1:94c648931f84 | 1282 | |
Blaze513 | 1:94c648931f84 | 1283 | /* Create LFN in Unicode */ |
Blaze513 | 1:94c648931f84 | 1284 | si = di = 0; |
Blaze513 | 1:94c648931f84 | 1285 | p = *path; |
Blaze513 | 1:94c648931f84 | 1286 | lfn = dj->lfn; |
Blaze513 | 1:94c648931f84 | 1287 | for (;;) { |
Blaze513 | 1:94c648931f84 | 1288 | w = p[si++]; /* Get a character */ |
Blaze513 | 1:94c648931f84 | 1289 | if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */ |
Blaze513 | 1:94c648931f84 | 1290 | if (di >= _MAX_LFN) /* Reject too long name */ |
Blaze513 | 1:94c648931f84 | 1291 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1292 | #if !_LFN_UNICODE |
Blaze513 | 1:94c648931f84 | 1293 | w &= 0xFF; |
Blaze513 | 1:94c648931f84 | 1294 | if (IsDBCS1(w)) { /* If it is a DBC 1st byte */ |
Blaze513 | 1:94c648931f84 | 1295 | b = p[si++]; /* Get 2nd byte */ |
Blaze513 | 1:94c648931f84 | 1296 | if (!IsDBCS2(b)) /* Reject invalid code for DBC */ |
Blaze513 | 1:94c648931f84 | 1297 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1298 | w = (w << 8) + b; |
Blaze513 | 1:94c648931f84 | 1299 | } |
Blaze513 | 1:94c648931f84 | 1300 | w = ff_convert(w, 1); /* Convert OEM to Unicode */ |
Blaze513 | 1:94c648931f84 | 1301 | if (!w) return FR_INVALID_NAME; /* Reject invalid code */ |
Blaze513 | 1:94c648931f84 | 1302 | #endif |
Blaze513 | 1:94c648931f84 | 1303 | if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */ |
Blaze513 | 1:94c648931f84 | 1304 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1305 | lfn[di++] = w; /* Store the Unicode char */ |
Blaze513 | 1:94c648931f84 | 1306 | } |
Blaze513 | 1:94c648931f84 | 1307 | *path = &p[si]; /* Return pointer to the next segment */ |
Blaze513 | 1:94c648931f84 | 1308 | cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ |
Blaze513 | 1:94c648931f84 | 1309 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 1310 | if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */ |
Blaze513 | 1:94c648931f84 | 1311 | (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { |
Blaze513 | 1:94c648931f84 | 1312 | lfn[di] = 0; |
Blaze513 | 1:94c648931f84 | 1313 | for (i = 0; i < 11; i++) |
Blaze513 | 1:94c648931f84 | 1314 | dj->fn[i] = (i < di) ? '.' : ' '; |
Blaze513 | 1:94c648931f84 | 1315 | dj->fn[i] = cf | NS_DOT; /* This is a dot entry */ |
Blaze513 | 1:94c648931f84 | 1316 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1317 | } |
Blaze513 | 1:94c648931f84 | 1318 | #endif |
Blaze513 | 1:94c648931f84 | 1319 | while (di) { /* Strip trailing spaces and dots */ |
Blaze513 | 1:94c648931f84 | 1320 | w = lfn[di - 1]; |
Blaze513 | 1:94c648931f84 | 1321 | if (w != ' ' && w != '.') break; |
Blaze513 | 1:94c648931f84 | 1322 | di--; |
Blaze513 | 1:94c648931f84 | 1323 | } |
Blaze513 | 1:94c648931f84 | 1324 | if (!di) return FR_INVALID_NAME; /* Reject nul string */ |
Blaze513 | 1:94c648931f84 | 1325 | |
Blaze513 | 1:94c648931f84 | 1326 | lfn[di] = 0; /* LFN is created */ |
Blaze513 | 1:94c648931f84 | 1327 | |
Blaze513 | 1:94c648931f84 | 1328 | /* Create SFN in directory form */ |
Blaze513 | 1:94c648931f84 | 1329 | mem_set(dj->fn, ' ', 11); |
Blaze513 | 1:94c648931f84 | 1330 | for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */ |
Blaze513 | 1:94c648931f84 | 1331 | if (si) cf |= NS_LOSS | NS_LFN; |
Blaze513 | 1:94c648931f84 | 1332 | while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */ |
Blaze513 | 1:94c648931f84 | 1333 | |
Blaze513 | 1:94c648931f84 | 1334 | b = i = 0; ni = 8; |
Blaze513 | 1:94c648931f84 | 1335 | for (;;) { |
Blaze513 | 1:94c648931f84 | 1336 | w = lfn[si++]; /* Get an LFN char */ |
Blaze513 | 1:94c648931f84 | 1337 | if (!w) break; /* Break on end of the LFN */ |
Blaze513 | 1:94c648931f84 | 1338 | if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */ |
Blaze513 | 1:94c648931f84 | 1339 | cf |= NS_LOSS | NS_LFN; continue; |
Blaze513 | 1:94c648931f84 | 1340 | } |
Blaze513 | 1:94c648931f84 | 1341 | |
Blaze513 | 1:94c648931f84 | 1342 | if (i >= ni || si == di) { /* Extension or end of SFN */ |
Blaze513 | 1:94c648931f84 | 1343 | if (ni == 11) { /* Long extension */ |
Blaze513 | 1:94c648931f84 | 1344 | cf |= NS_LOSS | NS_LFN; break; |
Blaze513 | 1:94c648931f84 | 1345 | } |
Blaze513 | 1:94c648931f84 | 1346 | if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */ |
Blaze513 | 1:94c648931f84 | 1347 | if (si > di) break; /* No extension */ |
Blaze513 | 1:94c648931f84 | 1348 | si = di; i = 8; ni = 11; /* Enter extension section */ |
Blaze513 | 1:94c648931f84 | 1349 | b <<= 2; continue; |
Blaze513 | 1:94c648931f84 | 1350 | } |
Blaze513 | 1:94c648931f84 | 1351 | |
Blaze513 | 1:94c648931f84 | 1352 | if (w >= 0x80) { /* Non ASCII char */ |
Blaze513 | 1:94c648931f84 | 1353 | #ifdef _EXCVT |
Blaze513 | 1:94c648931f84 | 1354 | w = ff_convert(w, 0); /* Unicode -> OEM code */ |
Blaze513 | 1:94c648931f84 | 1355 | if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */ |
Blaze513 | 1:94c648931f84 | 1356 | #else |
Blaze513 | 1:94c648931f84 | 1357 | w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */ |
Blaze513 | 1:94c648931f84 | 1358 | #endif |
Blaze513 | 1:94c648931f84 | 1359 | cf |= NS_LFN; /* Force create LFN entry */ |
Blaze513 | 1:94c648931f84 | 1360 | } |
Blaze513 | 1:94c648931f84 | 1361 | |
Blaze513 | 1:94c648931f84 | 1362 | if (_DF1S && w >= 0x100) { /* Double byte char */ |
Blaze513 | 1:94c648931f84 | 1363 | if (i >= ni - 1) { |
Blaze513 | 1:94c648931f84 | 1364 | cf |= NS_LOSS | NS_LFN; i = ni; continue; |
Blaze513 | 1:94c648931f84 | 1365 | } |
Blaze513 | 1:94c648931f84 | 1366 | dj->fn[i++] = (BYTE)(w >> 8); |
Blaze513 | 1:94c648931f84 | 1367 | } else { /* Single byte char */ |
Blaze513 | 1:94c648931f84 | 1368 | if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */ |
Blaze513 | 1:94c648931f84 | 1369 | w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */ |
Blaze513 | 1:94c648931f84 | 1370 | } else { |
Blaze513 | 1:94c648931f84 | 1371 | if (IsUpper(w)) { /* ASCII large capital */ |
Blaze513 | 1:94c648931f84 | 1372 | b |= 2; |
Blaze513 | 1:94c648931f84 | 1373 | } else { |
Blaze513 | 1:94c648931f84 | 1374 | if (IsLower(w)) { /* ASCII small capital */ |
Blaze513 | 1:94c648931f84 | 1375 | b |= 1; w -= 0x20; |
Blaze513 | 1:94c648931f84 | 1376 | } |
Blaze513 | 1:94c648931f84 | 1377 | } |
Blaze513 | 1:94c648931f84 | 1378 | } |
Blaze513 | 1:94c648931f84 | 1379 | } |
Blaze513 | 1:94c648931f84 | 1380 | dj->fn[i++] = (BYTE)w; |
Blaze513 | 1:94c648931f84 | 1381 | } |
Blaze513 | 1:94c648931f84 | 1382 | |
Blaze513 | 1:94c648931f84 | 1383 | if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */ |
Blaze513 | 1:94c648931f84 | 1384 | |
Blaze513 | 1:94c648931f84 | 1385 | if (ni == 8) b <<= 2; |
Blaze513 | 1:94c648931f84 | 1386 | if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */ |
Blaze513 | 1:94c648931f84 | 1387 | cf |= NS_LFN; |
Blaze513 | 1:94c648931f84 | 1388 | if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */ |
Blaze513 | 1:94c648931f84 | 1389 | if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */ |
Blaze513 | 1:94c648931f84 | 1390 | if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */ |
Blaze513 | 1:94c648931f84 | 1391 | } |
Blaze513 | 1:94c648931f84 | 1392 | |
Blaze513 | 1:94c648931f84 | 1393 | dj->fn[NS] = cf; /* SFN is created */ |
Blaze513 | 1:94c648931f84 | 1394 | |
Blaze513 | 1:94c648931f84 | 1395 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1396 | |
Blaze513 | 1:94c648931f84 | 1397 | |
Blaze513 | 1:94c648931f84 | 1398 | #else /* Non-LFN configuration */ |
Blaze513 | 1:94c648931f84 | 1399 | BYTE b, c, d, *sfn; |
Blaze513 | 1:94c648931f84 | 1400 | int ni, si, i; |
Blaze513 | 1:94c648931f84 | 1401 | const char *p; |
Blaze513 | 1:94c648931f84 | 1402 | |
Blaze513 | 1:94c648931f84 | 1403 | /* Create file name in directory form */ |
Blaze513 | 1:94c648931f84 | 1404 | sfn = dj->fn; |
Blaze513 | 1:94c648931f84 | 1405 | mem_set(sfn, ' ', 11); |
Blaze513 | 1:94c648931f84 | 1406 | si = i = b = 0; ni = 8; |
Blaze513 | 1:94c648931f84 | 1407 | p = *path; |
Blaze513 | 1:94c648931f84 | 1408 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 1409 | if (p[si] == '.') { /* Is this a dot entry? */ |
Blaze513 | 1:94c648931f84 | 1410 | for (;;) { |
Blaze513 | 1:94c648931f84 | 1411 | c = (BYTE)p[si++]; |
Blaze513 | 1:94c648931f84 | 1412 | if (c != '.' || si >= 3) break; |
Blaze513 | 1:94c648931f84 | 1413 | sfn[i++] = c; |
Blaze513 | 1:94c648931f84 | 1414 | } |
Blaze513 | 1:94c648931f84 | 1415 | if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1416 | *path = &p[si]; /* Return pointer to the next segment */ |
Blaze513 | 1:94c648931f84 | 1417 | sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */ |
Blaze513 | 1:94c648931f84 | 1418 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1419 | } |
Blaze513 | 1:94c648931f84 | 1420 | #endif |
Blaze513 | 1:94c648931f84 | 1421 | for (;;) { |
Blaze513 | 1:94c648931f84 | 1422 | c = (BYTE)p[si++]; |
Blaze513 | 1:94c648931f84 | 1423 | if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */ |
Blaze513 | 1:94c648931f84 | 1424 | if (c == '.' || i >= ni) { |
Blaze513 | 1:94c648931f84 | 1425 | if (ni != 8 || c != '.') return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1426 | i = 8; ni = 11; |
Blaze513 | 1:94c648931f84 | 1427 | b <<= 2; continue; |
Blaze513 | 1:94c648931f84 | 1428 | } |
Blaze513 | 1:94c648931f84 | 1429 | if (c >= 0x80) { /* Extended char */ |
Blaze513 | 1:94c648931f84 | 1430 | #ifdef _EXCVT |
Blaze513 | 1:94c648931f84 | 1431 | c = excvt[c - 0x80]; /* Convert extend char (SBCS) */ |
Blaze513 | 1:94c648931f84 | 1432 | #else |
Blaze513 | 1:94c648931f84 | 1433 | b |= 3; /* Eliminate NT flag if extended char is exist */ |
Blaze513 | 1:94c648931f84 | 1434 | #if !_DF1S /* ASCII only cfg */ |
Blaze513 | 1:94c648931f84 | 1435 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1436 | #endif |
Blaze513 | 1:94c648931f84 | 1437 | #endif |
Blaze513 | 1:94c648931f84 | 1438 | } |
Blaze513 | 1:94c648931f84 | 1439 | if (IsDBCS1(c)) { /* DBC 1st byte? */ |
Blaze513 | 1:94c648931f84 | 1440 | d = (BYTE)p[si++]; /* Get 2nd byte */ |
Blaze513 | 1:94c648931f84 | 1441 | if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */ |
Blaze513 | 1:94c648931f84 | 1442 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1443 | sfn[i++] = c; |
Blaze513 | 1:94c648931f84 | 1444 | sfn[i++] = d; |
Blaze513 | 1:94c648931f84 | 1445 | } else { /* Single byte code */ |
Blaze513 | 1:94c648931f84 | 1446 | if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */ |
Blaze513 | 1:94c648931f84 | 1447 | return FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1448 | if (IsUpper(c)) { /* ASCII large capital? */ |
Blaze513 | 1:94c648931f84 | 1449 | b |= 2; |
Blaze513 | 1:94c648931f84 | 1450 | } else { |
Blaze513 | 1:94c648931f84 | 1451 | if (IsLower(c)) { /* ASCII small capital? */ |
Blaze513 | 1:94c648931f84 | 1452 | b |= 1; c -= 0x20; |
Blaze513 | 1:94c648931f84 | 1453 | } |
Blaze513 | 1:94c648931f84 | 1454 | } |
Blaze513 | 1:94c648931f84 | 1455 | sfn[i++] = c; |
Blaze513 | 1:94c648931f84 | 1456 | } |
Blaze513 | 1:94c648931f84 | 1457 | } |
Blaze513 | 1:94c648931f84 | 1458 | *path = &p[si]; /* Return pointer to the next segment */ |
Blaze513 | 1:94c648931f84 | 1459 | c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ |
Blaze513 | 1:94c648931f84 | 1460 | |
Blaze513 | 1:94c648931f84 | 1461 | if (!i) return FR_INVALID_NAME; /* Reject nul string */ |
Blaze513 | 1:94c648931f84 | 1462 | if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */ |
Blaze513 | 1:94c648931f84 | 1463 | |
Blaze513 | 1:94c648931f84 | 1464 | if (ni == 8) b <<= 2; |
Blaze513 | 1:94c648931f84 | 1465 | if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */ |
Blaze513 | 1:94c648931f84 | 1466 | if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */ |
Blaze513 | 1:94c648931f84 | 1467 | |
Blaze513 | 1:94c648931f84 | 1468 | sfn[NS] = c; /* Store NT flag, File name is created */ |
Blaze513 | 1:94c648931f84 | 1469 | |
Blaze513 | 1:94c648931f84 | 1470 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1471 | #endif |
Blaze513 | 1:94c648931f84 | 1472 | } |
Blaze513 | 1:94c648931f84 | 1473 | |
Blaze513 | 1:94c648931f84 | 1474 | |
Blaze513 | 1:94c648931f84 | 1475 | |
Blaze513 | 1:94c648931f84 | 1476 | |
Blaze513 | 1:94c648931f84 | 1477 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1478 | /* Get file information from directory entry */ |
Blaze513 | 1:94c648931f84 | 1479 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1480 | #if _FS_MINIMIZE <= 1 |
Blaze513 | 1:94c648931f84 | 1481 | static |
Blaze513 | 1:94c648931f84 | 1482 | void get_fileinfo ( /* No return code */ |
Blaze513 | 1:94c648931f84 | 1483 | FAT_DIR *dj, /* Pointer to the directory object */ |
Blaze513 | 1:94c648931f84 | 1484 | FILINFO *fno /* Pointer to the file information to be filled */ |
Blaze513 | 1:94c648931f84 | 1485 | ) |
Blaze513 | 1:94c648931f84 | 1486 | { |
Blaze513 | 1:94c648931f84 | 1487 | int i; |
Blaze513 | 1:94c648931f84 | 1488 | BYTE nt, *dir; |
Blaze513 | 1:94c648931f84 | 1489 | TCHAR *p, c; |
Blaze513 | 1:94c648931f84 | 1490 | |
Blaze513 | 1:94c648931f84 | 1491 | |
Blaze513 | 1:94c648931f84 | 1492 | p = fno->fname; |
Blaze513 | 1:94c648931f84 | 1493 | if (dj->sect) { |
Blaze513 | 1:94c648931f84 | 1494 | dir = dj->dir; |
Blaze513 | 1:94c648931f84 | 1495 | nt = dir[DIR_NTres]; /* NT flag */ |
Blaze513 | 1:94c648931f84 | 1496 | for (i = 0; i < 8; i++) { /* Copy name body */ |
Blaze513 | 1:94c648931f84 | 1497 | c = dir[i]; |
Blaze513 | 1:94c648931f84 | 1498 | if (c == ' ') break; |
Blaze513 | 1:94c648931f84 | 1499 | if (c == 0x05) c = (TCHAR)0xE5; |
Blaze513 | 1:94c648931f84 | 1500 | if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20; |
Blaze513 | 1:94c648931f84 | 1501 | #if _LFN_UNICODE |
Blaze513 | 1:94c648931f84 | 1502 | if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i + 1])) |
Blaze513 | 1:94c648931f84 | 1503 | c = (c << 8) | dir[++i]; |
Blaze513 | 1:94c648931f84 | 1504 | c = ff_convert(c, 1); |
Blaze513 | 1:94c648931f84 | 1505 | if (!c) c = '?'; |
Blaze513 | 1:94c648931f84 | 1506 | #endif |
Blaze513 | 1:94c648931f84 | 1507 | *p++ = c; |
Blaze513 | 1:94c648931f84 | 1508 | } |
Blaze513 | 1:94c648931f84 | 1509 | if (dir[8] != ' ') { /* Copy name extension */ |
Blaze513 | 1:94c648931f84 | 1510 | *p++ = '.'; |
Blaze513 | 1:94c648931f84 | 1511 | for (i = 8; i < 11; i++) { |
Blaze513 | 1:94c648931f84 | 1512 | c = dir[i]; |
Blaze513 | 1:94c648931f84 | 1513 | if (c == ' ') break; |
Blaze513 | 1:94c648931f84 | 1514 | if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20; |
Blaze513 | 1:94c648931f84 | 1515 | #if _LFN_UNICODE |
Blaze513 | 1:94c648931f84 | 1516 | if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i + 1])) |
Blaze513 | 1:94c648931f84 | 1517 | c = (c << 8) | dir[++i]; |
Blaze513 | 1:94c648931f84 | 1518 | c = ff_convert(c, 1); |
Blaze513 | 1:94c648931f84 | 1519 | if (!c) c = '?'; |
Blaze513 | 1:94c648931f84 | 1520 | #endif |
Blaze513 | 1:94c648931f84 | 1521 | *p++ = c; |
Blaze513 | 1:94c648931f84 | 1522 | } |
Blaze513 | 1:94c648931f84 | 1523 | } |
Blaze513 | 1:94c648931f84 | 1524 | fno->fattrib = dir[DIR_Attr]; /* Attribute */ |
Blaze513 | 1:94c648931f84 | 1525 | fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ |
Blaze513 | 1:94c648931f84 | 1526 | fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ |
Blaze513 | 1:94c648931f84 | 1527 | fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ |
Blaze513 | 1:94c648931f84 | 1528 | } |
Blaze513 | 1:94c648931f84 | 1529 | *p = 0; |
Blaze513 | 1:94c648931f84 | 1530 | |
Blaze513 | 1:94c648931f84 | 1531 | #if _USE_LFN |
Blaze513 | 1:94c648931f84 | 1532 | if (fno->lfname) { |
Blaze513 | 1:94c648931f84 | 1533 | TCHAR *tp = fno->lfname; |
Blaze513 | 1:94c648931f84 | 1534 | WCHAR w, *lfn; |
Blaze513 | 1:94c648931f84 | 1535 | |
Blaze513 | 1:94c648931f84 | 1536 | i = 0; |
Blaze513 | 1:94c648931f84 | 1537 | if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */ |
Blaze513 | 1:94c648931f84 | 1538 | lfn = dj->lfn; |
Blaze513 | 1:94c648931f84 | 1539 | while ((w = *lfn++) != 0) { /* Get an LFN char */ |
Blaze513 | 1:94c648931f84 | 1540 | #if !_LFN_UNICODE |
Blaze513 | 1:94c648931f84 | 1541 | w = ff_convert(w, 0); /* Unicode -> OEM conversion */ |
Blaze513 | 1:94c648931f84 | 1542 | if (!w) { i = 0; break; } /* Could not convert, no LFN */ |
Blaze513 | 1:94c648931f84 | 1543 | if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */ |
Blaze513 | 1:94c648931f84 | 1544 | tp[i++] = (TCHAR)(w >> 8); |
Blaze513 | 1:94c648931f84 | 1545 | #endif |
Blaze513 | 1:94c648931f84 | 1546 | if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */ |
Blaze513 | 1:94c648931f84 | 1547 | tp[i++] = (TCHAR)w; |
Blaze513 | 1:94c648931f84 | 1548 | } |
Blaze513 | 1:94c648931f84 | 1549 | } |
Blaze513 | 1:94c648931f84 | 1550 | tp[i] = 0; /* Terminator */ |
Blaze513 | 1:94c648931f84 | 1551 | } |
Blaze513 | 1:94c648931f84 | 1552 | #endif |
Blaze513 | 1:94c648931f84 | 1553 | } |
Blaze513 | 1:94c648931f84 | 1554 | #endif /* _FS_MINIMIZE <= 1 */ |
Blaze513 | 1:94c648931f84 | 1555 | |
Blaze513 | 1:94c648931f84 | 1556 | |
Blaze513 | 1:94c648931f84 | 1557 | |
Blaze513 | 1:94c648931f84 | 1558 | |
Blaze513 | 1:94c648931f84 | 1559 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1560 | /* Follow a file path */ |
Blaze513 | 1:94c648931f84 | 1561 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1562 | |
Blaze513 | 1:94c648931f84 | 1563 | static |
Blaze513 | 1:94c648931f84 | 1564 | FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ |
Blaze513 | 1:94c648931f84 | 1565 | FAT_DIR *dj, /* Directory object to return last directory and found object */ |
Blaze513 | 1:94c648931f84 | 1566 | const TCHAR *path /* Full-path string to find a file or directory */ |
Blaze513 | 1:94c648931f84 | 1567 | ) |
Blaze513 | 1:94c648931f84 | 1568 | { |
Blaze513 | 1:94c648931f84 | 1569 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1570 | BYTE *dir, ns; |
Blaze513 | 1:94c648931f84 | 1571 | |
Blaze513 | 1:94c648931f84 | 1572 | |
Blaze513 | 1:94c648931f84 | 1573 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 1574 | if (*path == '/' || *path == '\\') { /* There is a heading separator */ |
Blaze513 | 1:94c648931f84 | 1575 | path++; dj->sclust = 0; /* Strip it and start from the root dir */ |
Blaze513 | 1:94c648931f84 | 1576 | } else { /* No heading separator */ |
Blaze513 | 1:94c648931f84 | 1577 | dj->sclust = dj->fs->cdir; /* Start from the current dir */ |
Blaze513 | 1:94c648931f84 | 1578 | } |
Blaze513 | 1:94c648931f84 | 1579 | #else |
Blaze513 | 1:94c648931f84 | 1580 | if (*path == '/' || *path == '\\') /* Strip heading separator if exist */ |
Blaze513 | 1:94c648931f84 | 1581 | path++; |
Blaze513 | 1:94c648931f84 | 1582 | dj->sclust = 0; /* Start from the root dir */ |
Blaze513 | 1:94c648931f84 | 1583 | #endif |
Blaze513 | 1:94c648931f84 | 1584 | |
Blaze513 | 1:94c648931f84 | 1585 | if ((UINT)*path < ' ') { /* Nul path means the start directory itself */ |
Blaze513 | 1:94c648931f84 | 1586 | res = dir_sdi(dj, 0); |
Blaze513 | 1:94c648931f84 | 1587 | dj->dir = 0; |
Blaze513 | 1:94c648931f84 | 1588 | |
Blaze513 | 1:94c648931f84 | 1589 | } else { /* Follow path */ |
Blaze513 | 1:94c648931f84 | 1590 | for (;;) { |
Blaze513 | 1:94c648931f84 | 1591 | res = create_name(dj, &path); /* Get a segment */ |
Blaze513 | 1:94c648931f84 | 1592 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 1593 | res = dir_find(dj); /* Find it */ |
Blaze513 | 1:94c648931f84 | 1594 | ns = *(dj->fn+NS); |
Blaze513 | 1:94c648931f84 | 1595 | if (res != FR_OK) { /* Failed to find the object */ |
Blaze513 | 1:94c648931f84 | 1596 | if (res != FR_NO_FILE) break; /* Abort if any hard error occured */ |
Blaze513 | 1:94c648931f84 | 1597 | /* Object not found */ |
Blaze513 | 1:94c648931f84 | 1598 | if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */ |
Blaze513 | 1:94c648931f84 | 1599 | dj->sclust = 0; dj->dir = 0; /* It is the root dir */ |
Blaze513 | 1:94c648931f84 | 1600 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 1601 | if (!(ns & NS_LAST)) continue; |
Blaze513 | 1:94c648931f84 | 1602 | } else { /* Could not find the object */ |
Blaze513 | 1:94c648931f84 | 1603 | if (!(ns & NS_LAST)) res = FR_NO_PATH; |
Blaze513 | 1:94c648931f84 | 1604 | } |
Blaze513 | 1:94c648931f84 | 1605 | break; |
Blaze513 | 1:94c648931f84 | 1606 | } |
Blaze513 | 1:94c648931f84 | 1607 | if (ns & NS_LAST) break; /* Last segment match. Function completed. */ |
Blaze513 | 1:94c648931f84 | 1608 | dir = dj->dir; /* There is next segment. Follow the sub directory */ |
Blaze513 | 1:94c648931f84 | 1609 | if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */ |
Blaze513 | 1:94c648931f84 | 1610 | res = FR_NO_PATH; break; |
Blaze513 | 1:94c648931f84 | 1611 | } |
Blaze513 | 1:94c648931f84 | 1612 | dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); |
Blaze513 | 1:94c648931f84 | 1613 | } |
Blaze513 | 1:94c648931f84 | 1614 | } |
Blaze513 | 1:94c648931f84 | 1615 | |
Blaze513 | 1:94c648931f84 | 1616 | return res; |
Blaze513 | 1:94c648931f84 | 1617 | } |
Blaze513 | 1:94c648931f84 | 1618 | |
Blaze513 | 1:94c648931f84 | 1619 | |
Blaze513 | 1:94c648931f84 | 1620 | |
Blaze513 | 1:94c648931f84 | 1621 | |
Blaze513 | 1:94c648931f84 | 1622 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1623 | /* Load boot record and check if it is an FAT boot record */ |
Blaze513 | 1:94c648931f84 | 1624 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1625 | |
Blaze513 | 1:94c648931f84 | 1626 | static |
Blaze513 | 1:94c648931f84 | 1627 | BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */ |
Blaze513 | 1:94c648931f84 | 1628 | FATFS *fs, /* File system object */ |
Blaze513 | 1:94c648931f84 | 1629 | DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ |
Blaze513 | 1:94c648931f84 | 1630 | ) |
Blaze513 | 1:94c648931f84 | 1631 | { |
Blaze513 | 1:94c648931f84 | 1632 | if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */ |
Blaze513 | 1:94c648931f84 | 1633 | return 3; |
Blaze513 | 1:94c648931f84 | 1634 | if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */ |
Blaze513 | 1:94c648931f84 | 1635 | return 2; |
Blaze513 | 1:94c648931f84 | 1636 | |
Blaze513 | 1:94c648931f84 | 1637 | if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ |
Blaze513 | 1:94c648931f84 | 1638 | return 0; |
Blaze513 | 1:94c648931f84 | 1639 | if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) |
Blaze513 | 1:94c648931f84 | 1640 | return 0; |
Blaze513 | 1:94c648931f84 | 1641 | |
Blaze513 | 1:94c648931f84 | 1642 | return 1; |
Blaze513 | 1:94c648931f84 | 1643 | } |
Blaze513 | 1:94c648931f84 | 1644 | |
Blaze513 | 1:94c648931f84 | 1645 | |
Blaze513 | 1:94c648931f84 | 1646 | |
Blaze513 | 1:94c648931f84 | 1647 | |
Blaze513 | 1:94c648931f84 | 1648 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1649 | /* Make sure that the file system is valid */ |
Blaze513 | 1:94c648931f84 | 1650 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1651 | |
Blaze513 | 1:94c648931f84 | 1652 | static |
Blaze513 | 1:94c648931f84 | 1653 | FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */ |
Blaze513 | 1:94c648931f84 | 1654 | const TCHAR **path, /* Pointer to pointer to the path name (drive number) */ |
Blaze513 | 1:94c648931f84 | 1655 | FATFS **rfs, /* Pointer to pointer to the found file system object */ |
Blaze513 | 1:94c648931f84 | 1656 | BYTE chk_wp /* !=0: Check media write protection for write access */ |
Blaze513 | 1:94c648931f84 | 1657 | ) |
Blaze513 | 1:94c648931f84 | 1658 | { |
Blaze513 | 1:94c648931f84 | 1659 | BYTE fmt, b, *tbl; |
Blaze513 | 1:94c648931f84 | 1660 | UINT vol; |
Blaze513 | 1:94c648931f84 | 1661 | DSTATUS stat; |
Blaze513 | 1:94c648931f84 | 1662 | DWORD bsect, fasize, tsect, sysect, nclst, szbfat; |
Blaze513 | 1:94c648931f84 | 1663 | WORD nrsv; |
Blaze513 | 1:94c648931f84 | 1664 | const TCHAR *p = *path; |
Blaze513 | 1:94c648931f84 | 1665 | FATFS *fs; |
Blaze513 | 1:94c648931f84 | 1666 | |
Blaze513 | 1:94c648931f84 | 1667 | /* Get logical drive number from the path name */ |
Blaze513 | 1:94c648931f84 | 1668 | vol = p[0] - '0'; /* Is there a drive number? */ |
Blaze513 | 1:94c648931f84 | 1669 | if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */ |
Blaze513 | 1:94c648931f84 | 1670 | p += 2; *path = p; /* Return pointer to the path name */ |
Blaze513 | 1:94c648931f84 | 1671 | } else { /* No drive number is given */ |
Blaze513 | 1:94c648931f84 | 1672 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 1673 | vol = Drive; /* Use current drive */ |
Blaze513 | 1:94c648931f84 | 1674 | #else |
Blaze513 | 1:94c648931f84 | 1675 | vol = 0; /* Use drive 0 */ |
Blaze513 | 1:94c648931f84 | 1676 | #endif |
Blaze513 | 1:94c648931f84 | 1677 | } |
Blaze513 | 1:94c648931f84 | 1678 | |
Blaze513 | 1:94c648931f84 | 1679 | /* Check if the logical drive is valid or not */ |
Blaze513 | 1:94c648931f84 | 1680 | if (vol >= _DRIVES) /* Is the drive number valid? */ |
Blaze513 | 1:94c648931f84 | 1681 | return FR_INVALID_DRIVE; |
Blaze513 | 1:94c648931f84 | 1682 | *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */ |
Blaze513 | 1:94c648931f84 | 1683 | if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */ |
Blaze513 | 1:94c648931f84 | 1684 | |
Blaze513 | 1:94c648931f84 | 1685 | ENTER_FF(fs); /* Lock file system */ |
Blaze513 | 1:94c648931f84 | 1686 | |
Blaze513 | 1:94c648931f84 | 1687 | if (fs->fs_type) { /* If the logical drive has been mounted */ |
Blaze513 | 1:94c648931f84 | 1688 | stat = disk_status(fs->drv); |
Blaze513 | 1:94c648931f84 | 1689 | if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */ |
Blaze513 | 1:94c648931f84 | 1690 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 1691 | if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ |
Blaze513 | 1:94c648931f84 | 1692 | return FR_WRITE_PROTECTED; |
Blaze513 | 1:94c648931f84 | 1693 | #endif |
Blaze513 | 1:94c648931f84 | 1694 | return FR_OK; /* The file system object is valid */ |
Blaze513 | 1:94c648931f84 | 1695 | } |
Blaze513 | 1:94c648931f84 | 1696 | } |
Blaze513 | 1:94c648931f84 | 1697 | |
Blaze513 | 1:94c648931f84 | 1698 | /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */ |
Blaze513 | 1:94c648931f84 | 1699 | |
Blaze513 | 1:94c648931f84 | 1700 | fs->fs_type = 0; /* Clear the file system object */ |
Blaze513 | 1:94c648931f84 | 1701 | fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */ |
Blaze513 | 1:94c648931f84 | 1702 | stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */ |
Blaze513 | 1:94c648931f84 | 1703 | if (stat & STA_NOINIT) /* Check if the drive is ready */ |
Blaze513 | 1:94c648931f84 | 1704 | return FR_NOT_READY; |
Blaze513 | 1:94c648931f84 | 1705 | #if _MAX_SS != 512 /* Get disk sector size if needed */ |
Blaze513 | 1:94c648931f84 | 1706 | if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS) |
Blaze513 | 1:94c648931f84 | 1707 | return FR_NO_FILESYSTEM; |
Blaze513 | 1:94c648931f84 | 1708 | #endif |
Blaze513 | 1:94c648931f84 | 1709 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 1710 | if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */ |
Blaze513 | 1:94c648931f84 | 1711 | return FR_WRITE_PROTECTED; |
Blaze513 | 1:94c648931f84 | 1712 | #endif |
Blaze513 | 1:94c648931f84 | 1713 | /* Search FAT partition on the drive (Supports only generic partitionings, FDISK and SFD) */ |
Blaze513 | 1:94c648931f84 | 1714 | fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */ |
Blaze513 | 1:94c648931f84 | 1715 | if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */ |
Blaze513 | 1:94c648931f84 | 1716 | /* Check the partition listed in top of the partition table */ |
Blaze513 | 1:94c648931f84 | 1717 | tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */ |
Blaze513 | 1:94c648931f84 | 1718 | if (tbl[4]) { /* Is the partition existing? */ |
Blaze513 | 1:94c648931f84 | 1719 | bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */ |
Blaze513 | 1:94c648931f84 | 1720 | fmt = check_fs(fs, bsect); /* Check the partition */ |
Blaze513 | 1:94c648931f84 | 1721 | } |
Blaze513 | 1:94c648931f84 | 1722 | } |
Blaze513 | 1:94c648931f84 | 1723 | if (fmt == 3) return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 1724 | if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */ |
Blaze513 | 1:94c648931f84 | 1725 | |
Blaze513 | 1:94c648931f84 | 1726 | /* Following code initializes the file system object */ |
Blaze513 | 1:94c648931f84 | 1727 | |
Blaze513 | 1:94c648931f84 | 1728 | if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */ |
Blaze513 | 1:94c648931f84 | 1729 | return FR_NO_FILESYSTEM; |
Blaze513 | 1:94c648931f84 | 1730 | |
Blaze513 | 1:94c648931f84 | 1731 | fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */ |
Blaze513 | 1:94c648931f84 | 1732 | if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32); |
Blaze513 | 1:94c648931f84 | 1733 | fs->fsize = fasize; |
Blaze513 | 1:94c648931f84 | 1734 | |
Blaze513 | 1:94c648931f84 | 1735 | fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */ |
Blaze513 | 1:94c648931f84 | 1736 | if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ |
Blaze513 | 1:94c648931f84 | 1737 | fasize *= b; /* Number of sectors for FAT area */ |
Blaze513 | 1:94c648931f84 | 1738 | |
Blaze513 | 1:94c648931f84 | 1739 | fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ |
Blaze513 | 1:94c648931f84 | 1740 | if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be 1,2,4...128) */ |
Blaze513 | 1:94c648931f84 | 1741 | |
Blaze513 | 1:94c648931f84 | 1742 | fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */ |
Blaze513 | 1:94c648931f84 | 1743 | if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */ |
Blaze513 | 1:94c648931f84 | 1744 | |
Blaze513 | 1:94c648931f84 | 1745 | tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */ |
Blaze513 | 1:94c648931f84 | 1746 | if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32); |
Blaze513 | 1:94c648931f84 | 1747 | |
Blaze513 | 1:94c648931f84 | 1748 | nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ |
Blaze513 | 1:94c648931f84 | 1749 | if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */ |
Blaze513 | 1:94c648931f84 | 1750 | |
Blaze513 | 1:94c648931f84 | 1751 | /* Determine the FAT sub type */ |
Blaze513 | 1:94c648931f84 | 1752 | sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / 32); /* RSV+FAT+DIR */ |
Blaze513 | 1:94c648931f84 | 1753 | if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
Blaze513 | 1:94c648931f84 | 1754 | nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ |
Blaze513 | 1:94c648931f84 | 1755 | if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
Blaze513 | 1:94c648931f84 | 1756 | fmt = FS_FAT12; |
Blaze513 | 1:94c648931f84 | 1757 | if (nclst >= MIN_FAT16) fmt = FS_FAT16; |
Blaze513 | 1:94c648931f84 | 1758 | if (nclst >= MIN_FAT32) fmt = FS_FAT32; |
Blaze513 | 1:94c648931f84 | 1759 | |
Blaze513 | 1:94c648931f84 | 1760 | /* Boundaries and Limits */ |
Blaze513 | 1:94c648931f84 | 1761 | fs->n_fatent = nclst + 2; /* Number of FAT entries */ |
Blaze513 | 1:94c648931f84 | 1762 | fs->database = bsect + sysect; /* Data start sector */ |
Blaze513 | 1:94c648931f84 | 1763 | fs->fatbase = bsect + nrsv; /* FAT start sector */ |
Blaze513 | 1:94c648931f84 | 1764 | if (fmt == FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 1765 | if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ |
Blaze513 | 1:94c648931f84 | 1766 | fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */ |
Blaze513 | 1:94c648931f84 | 1767 | szbfat = fs->n_fatent * 4; /* (Required FAT size) */ |
Blaze513 | 1:94c648931f84 | 1768 | } else { |
Blaze513 | 1:94c648931f84 | 1769 | if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ |
Blaze513 | 1:94c648931f84 | 1770 | fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ |
Blaze513 | 1:94c648931f84 | 1771 | szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */ |
Blaze513 | 1:94c648931f84 | 1772 | fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); |
Blaze513 | 1:94c648931f84 | 1773 | } |
Blaze513 | 1:94c648931f84 | 1774 | if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (FAT size must not be less than FAT sectors */ |
Blaze513 | 1:94c648931f84 | 1775 | return FR_NO_FILESYSTEM; |
Blaze513 | 1:94c648931f84 | 1776 | |
Blaze513 | 1:94c648931f84 | 1777 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 1778 | /* Initialize cluster allocation information */ |
Blaze513 | 1:94c648931f84 | 1779 | fs->free_clust = 0xFFFFFFFF; |
Blaze513 | 1:94c648931f84 | 1780 | fs->last_clust = 0; |
Blaze513 | 1:94c648931f84 | 1781 | |
Blaze513 | 1:94c648931f84 | 1782 | /* Get fsinfo if available */ |
Blaze513 | 1:94c648931f84 | 1783 | if (fmt == FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 1784 | fs->fsi_flag = 0; |
Blaze513 | 1:94c648931f84 | 1785 | fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo); |
Blaze513 | 1:94c648931f84 | 1786 | if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK && |
Blaze513 | 1:94c648931f84 | 1787 | LD_WORD(fs->win+BS_55AA) == 0xAA55 && |
Blaze513 | 1:94c648931f84 | 1788 | LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 && |
Blaze513 | 1:94c648931f84 | 1789 | LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) { |
Blaze513 | 1:94c648931f84 | 1790 | fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free); |
Blaze513 | 1:94c648931f84 | 1791 | fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count); |
Blaze513 | 1:94c648931f84 | 1792 | } |
Blaze513 | 1:94c648931f84 | 1793 | } |
Blaze513 | 1:94c648931f84 | 1794 | #endif |
Blaze513 | 1:94c648931f84 | 1795 | fs->fs_type = fmt; /* FAT sub-type */ |
Blaze513 | 1:94c648931f84 | 1796 | fs->id = ++Fsid; /* File system mount ID */ |
Blaze513 | 1:94c648931f84 | 1797 | fs->winsect = 0; /* Invalidate sector cache */ |
Blaze513 | 1:94c648931f84 | 1798 | fs->wflag = 0; |
Blaze513 | 1:94c648931f84 | 1799 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 1800 | fs->cdir = 0; /* Current directory (root dir) */ |
Blaze513 | 1:94c648931f84 | 1801 | #endif |
Blaze513 | 1:94c648931f84 | 1802 | #if _FS_SHARE /* Clear file lock semaphores */ |
Blaze513 | 1:94c648931f84 | 1803 | for (vol = 0; vol < _FS_SHARE; vol++) |
Blaze513 | 1:94c648931f84 | 1804 | fs->flsem[vol].ctr = 0; |
Blaze513 | 1:94c648931f84 | 1805 | #endif |
Blaze513 | 1:94c648931f84 | 1806 | |
Blaze513 | 1:94c648931f84 | 1807 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1808 | } |
Blaze513 | 1:94c648931f84 | 1809 | |
Blaze513 | 1:94c648931f84 | 1810 | |
Blaze513 | 1:94c648931f84 | 1811 | |
Blaze513 | 1:94c648931f84 | 1812 | |
Blaze513 | 1:94c648931f84 | 1813 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1814 | /* Check if the file/dir object is valid or not */ |
Blaze513 | 1:94c648931f84 | 1815 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1816 | |
Blaze513 | 1:94c648931f84 | 1817 | static |
Blaze513 | 1:94c648931f84 | 1818 | FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ |
Blaze513 | 1:94c648931f84 | 1819 | FATFS *fs, /* Pointer to the file system object */ |
Blaze513 | 1:94c648931f84 | 1820 | WORD id /* Member id of the target object to be checked */ |
Blaze513 | 1:94c648931f84 | 1821 | ) |
Blaze513 | 1:94c648931f84 | 1822 | { |
Blaze513 | 1:94c648931f84 | 1823 | if (!fs || !fs->fs_type || fs->id != id) |
Blaze513 | 1:94c648931f84 | 1824 | return FR_INVALID_OBJECT; |
Blaze513 | 1:94c648931f84 | 1825 | |
Blaze513 | 1:94c648931f84 | 1826 | ENTER_FF(fs); /* Lock file system */ |
Blaze513 | 1:94c648931f84 | 1827 | |
Blaze513 | 1:94c648931f84 | 1828 | if (disk_status(fs->drv) & STA_NOINIT) |
Blaze513 | 1:94c648931f84 | 1829 | return FR_NOT_READY; |
Blaze513 | 1:94c648931f84 | 1830 | |
Blaze513 | 1:94c648931f84 | 1831 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1832 | } |
Blaze513 | 1:94c648931f84 | 1833 | |
Blaze513 | 1:94c648931f84 | 1834 | |
Blaze513 | 1:94c648931f84 | 1835 | |
Blaze513 | 1:94c648931f84 | 1836 | |
Blaze513 | 1:94c648931f84 | 1837 | /*-------------------------------------------------------------------------- |
Blaze513 | 1:94c648931f84 | 1838 | |
Blaze513 | 1:94c648931f84 | 1839 | Public Functions |
Blaze513 | 1:94c648931f84 | 1840 | |
Blaze513 | 1:94c648931f84 | 1841 | --------------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1842 | |
Blaze513 | 1:94c648931f84 | 1843 | |
Blaze513 | 1:94c648931f84 | 1844 | |
Blaze513 | 1:94c648931f84 | 1845 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1846 | /* Mount/Unmount a Logical Drive */ |
Blaze513 | 1:94c648931f84 | 1847 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1848 | |
Blaze513 | 1:94c648931f84 | 1849 | FRESULT f_mount ( |
Blaze513 | 1:94c648931f84 | 1850 | BYTE vol, /* Logical drive number to be mounted/unmounted */ |
Blaze513 | 1:94c648931f84 | 1851 | FATFS *fs /* Pointer to new file system object (NULL for unmount)*/ |
Blaze513 | 1:94c648931f84 | 1852 | ) |
Blaze513 | 1:94c648931f84 | 1853 | { |
Blaze513 | 1:94c648931f84 | 1854 | FATFS *rfs; |
Blaze513 | 1:94c648931f84 | 1855 | |
Blaze513 | 1:94c648931f84 | 1856 | |
Blaze513 | 1:94c648931f84 | 1857 | if (vol >= _DRIVES) /* Check if the drive number is valid */ |
Blaze513 | 1:94c648931f84 | 1858 | return FR_INVALID_DRIVE; |
Blaze513 | 1:94c648931f84 | 1859 | rfs = FatFs[vol]; /* Get current fs object */ |
Blaze513 | 1:94c648931f84 | 1860 | |
Blaze513 | 1:94c648931f84 | 1861 | if (rfs) { |
Blaze513 | 1:94c648931f84 | 1862 | #if _FS_REENTRANT /* Discard sync object of the current volume */ |
Blaze513 | 1:94c648931f84 | 1863 | if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 1864 | #endif |
Blaze513 | 1:94c648931f84 | 1865 | rfs->fs_type = 0; /* Clear old fs object */ |
Blaze513 | 1:94c648931f84 | 1866 | } |
Blaze513 | 1:94c648931f84 | 1867 | |
Blaze513 | 1:94c648931f84 | 1868 | if (fs) { |
Blaze513 | 1:94c648931f84 | 1869 | fs->fs_type = 0; /* Clear new fs object */ |
Blaze513 | 1:94c648931f84 | 1870 | #if _FS_REENTRANT /* Create sync object for the new volume */ |
Blaze513 | 1:94c648931f84 | 1871 | if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 1872 | #endif |
Blaze513 | 1:94c648931f84 | 1873 | } |
Blaze513 | 1:94c648931f84 | 1874 | FatFs[vol] = fs; /* Register new fs object */ |
Blaze513 | 1:94c648931f84 | 1875 | |
Blaze513 | 1:94c648931f84 | 1876 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 1877 | } |
Blaze513 | 1:94c648931f84 | 1878 | |
Blaze513 | 1:94c648931f84 | 1879 | |
Blaze513 | 1:94c648931f84 | 1880 | |
Blaze513 | 1:94c648931f84 | 1881 | |
Blaze513 | 1:94c648931f84 | 1882 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1883 | /* Open or Create a File */ |
Blaze513 | 1:94c648931f84 | 1884 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 1885 | |
Blaze513 | 1:94c648931f84 | 1886 | FRESULT f_open ( |
Blaze513 | 1:94c648931f84 | 1887 | FAT_FIL *fp, /* Pointer to the blank file object */ |
Blaze513 | 1:94c648931f84 | 1888 | const TCHAR *path, /* Pointer to the file name */ |
Blaze513 | 1:94c648931f84 | 1889 | BYTE mode /* Access mode and file open mode flags */ |
Blaze513 | 1:94c648931f84 | 1890 | ) |
Blaze513 | 1:94c648931f84 | 1891 | { |
Blaze513 | 1:94c648931f84 | 1892 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 1893 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 1894 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 1895 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 1896 | |
Blaze513 | 1:94c648931f84 | 1897 | |
Blaze513 | 1:94c648931f84 | 1898 | fp->fs = 0; /* Clear file object */ |
Blaze513 | 1:94c648931f84 | 1899 | |
Blaze513 | 1:94c648931f84 | 1900 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 1901 | mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW; |
Blaze513 | 1:94c648931f84 | 1902 | res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ)); |
Blaze513 | 1:94c648931f84 | 1903 | #else |
Blaze513 | 1:94c648931f84 | 1904 | mode &= FA_READ; |
Blaze513 | 1:94c648931f84 | 1905 | res = chk_mounted(&path, &dj.fs, 0); |
Blaze513 | 1:94c648931f84 | 1906 | #endif |
Blaze513 | 1:94c648931f84 | 1907 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 1908 | if (res == FR_OK) |
Blaze513 | 1:94c648931f84 | 1909 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 1910 | dir = dj.dir; |
Blaze513 | 1:94c648931f84 | 1911 | |
Blaze513 | 1:94c648931f84 | 1912 | #if !_FS_READONLY /* R/W configuration */ |
Blaze513 | 1:94c648931f84 | 1913 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1914 | if (!dir) /* Current dir itself */ |
Blaze513 | 1:94c648931f84 | 1915 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1916 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 1917 | else |
Blaze513 | 1:94c648931f84 | 1918 | res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); |
Blaze513 | 1:94c648931f84 | 1919 | #endif |
Blaze513 | 1:94c648931f84 | 1920 | } |
Blaze513 | 1:94c648931f84 | 1921 | /* Create or Open a file */ |
Blaze513 | 1:94c648931f84 | 1922 | if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) { |
Blaze513 | 1:94c648931f84 | 1923 | DWORD dw, cl; |
Blaze513 | 1:94c648931f84 | 1924 | |
Blaze513 | 1:94c648931f84 | 1925 | if (res != FR_OK) { /* No file, create new */ |
Blaze513 | 1:94c648931f84 | 1926 | if (res == FR_NO_FILE) /* There is no file to open, create a new entry */ |
Blaze513 | 1:94c648931f84 | 1927 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 1928 | res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; |
Blaze513 | 1:94c648931f84 | 1929 | #else |
Blaze513 | 1:94c648931f84 | 1930 | res = dir_register(&dj); |
Blaze513 | 1:94c648931f84 | 1931 | #endif |
Blaze513 | 1:94c648931f84 | 1932 | mode |= FA_CREATE_ALWAYS; |
Blaze513 | 1:94c648931f84 | 1933 | dir = dj.dir; /* New entry */ |
Blaze513 | 1:94c648931f84 | 1934 | } |
Blaze513 | 1:94c648931f84 | 1935 | else { /* Any object is already existing */ |
Blaze513 | 1:94c648931f84 | 1936 | if (mode & FA_CREATE_NEW) { /* Cannot create new */ |
Blaze513 | 1:94c648931f84 | 1937 | res = FR_EXIST; |
Blaze513 | 1:94c648931f84 | 1938 | } else { |
Blaze513 | 1:94c648931f84 | 1939 | if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */ |
Blaze513 | 1:94c648931f84 | 1940 | res = FR_DENIED; |
Blaze513 | 1:94c648931f84 | 1941 | } |
Blaze513 | 1:94c648931f84 | 1942 | } |
Blaze513 | 1:94c648931f84 | 1943 | if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ |
Blaze513 | 1:94c648931f84 | 1944 | dw = get_fattime(); /* Created time */ |
Blaze513 | 1:94c648931f84 | 1945 | ST_DWORD(dir+DIR_CrtTime, dw); |
Blaze513 | 1:94c648931f84 | 1946 | dir[DIR_Attr] = 0; /* Reset attribute */ |
Blaze513 | 1:94c648931f84 | 1947 | ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ |
Blaze513 | 1:94c648931f84 | 1948 | cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */ |
Blaze513 | 1:94c648931f84 | 1949 | ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */ |
Blaze513 | 1:94c648931f84 | 1950 | ST_WORD(dir+DIR_FstClusLO, 0); |
Blaze513 | 1:94c648931f84 | 1951 | dj.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 1952 | if (cl) { /* Remove the cluster chain if exist */ |
Blaze513 | 1:94c648931f84 | 1953 | dw = dj.fs->winsect; |
Blaze513 | 1:94c648931f84 | 1954 | res = remove_chain(dj.fs, cl); |
Blaze513 | 1:94c648931f84 | 1955 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1956 | dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */ |
Blaze513 | 1:94c648931f84 | 1957 | res = move_window(dj.fs, dw); |
Blaze513 | 1:94c648931f84 | 1958 | } |
Blaze513 | 1:94c648931f84 | 1959 | } |
Blaze513 | 1:94c648931f84 | 1960 | } |
Blaze513 | 1:94c648931f84 | 1961 | } |
Blaze513 | 1:94c648931f84 | 1962 | else { /* Open an existing file */ |
Blaze513 | 1:94c648931f84 | 1963 | if (res == FR_OK) { /* Follow succeeded */ |
Blaze513 | 1:94c648931f84 | 1964 | if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */ |
Blaze513 | 1:94c648931f84 | 1965 | res = FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 1966 | } else { |
Blaze513 | 1:94c648931f84 | 1967 | if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ |
Blaze513 | 1:94c648931f84 | 1968 | res = FR_DENIED; |
Blaze513 | 1:94c648931f84 | 1969 | } |
Blaze513 | 1:94c648931f84 | 1970 | } |
Blaze513 | 1:94c648931f84 | 1971 | } |
Blaze513 | 1:94c648931f84 | 1972 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1973 | if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) |
Blaze513 | 1:94c648931f84 | 1974 | mode |= FA__WRITTEN; /* Set file changed flag */ |
Blaze513 | 1:94c648931f84 | 1975 | fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ |
Blaze513 | 1:94c648931f84 | 1976 | fp->dir_ptr = dir; |
Blaze513 | 1:94c648931f84 | 1977 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 1978 | fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); |
Blaze513 | 1:94c648931f84 | 1979 | if (!fp->lockid) res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 1980 | #endif |
Blaze513 | 1:94c648931f84 | 1981 | } |
Blaze513 | 1:94c648931f84 | 1982 | |
Blaze513 | 1:94c648931f84 | 1983 | #else /* R/O configuration */ |
Blaze513 | 1:94c648931f84 | 1984 | if (res == FR_OK) { /* Follow succeeded */ |
Blaze513 | 1:94c648931f84 | 1985 | if (!dir) { /* Current dir itself */ |
Blaze513 | 1:94c648931f84 | 1986 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 1987 | } else { |
Blaze513 | 1:94c648931f84 | 1988 | if (dir[DIR_Attr] & AM_DIR) /* It is a directory */ |
Blaze513 | 1:94c648931f84 | 1989 | res = FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 1990 | } |
Blaze513 | 1:94c648931f84 | 1991 | } |
Blaze513 | 1:94c648931f84 | 1992 | #endif |
Blaze513 | 1:94c648931f84 | 1993 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 1994 | |
Blaze513 | 1:94c648931f84 | 1995 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 1996 | fp->flag = mode; /* File access mode */ |
Blaze513 | 1:94c648931f84 | 1997 | fp->org_clust = /* File start cluster */ |
Blaze513 | 1:94c648931f84 | 1998 | ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); |
Blaze513 | 1:94c648931f84 | 1999 | fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ |
Blaze513 | 1:94c648931f84 | 2000 | fp->fptr = 0; /* File pointer */ |
Blaze513 | 1:94c648931f84 | 2001 | fp->dsect = 0; |
Blaze513 | 1:94c648931f84 | 2002 | #if _USE_FASTSEEK |
Blaze513 | 1:94c648931f84 | 2003 | fp->cltbl = 0; /* No cluster link map table */ |
Blaze513 | 1:94c648931f84 | 2004 | #endif |
Blaze513 | 1:94c648931f84 | 2005 | fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */ |
Blaze513 | 1:94c648931f84 | 2006 | } |
Blaze513 | 1:94c648931f84 | 2007 | |
Blaze513 | 1:94c648931f84 | 2008 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2009 | } |
Blaze513 | 1:94c648931f84 | 2010 | |
Blaze513 | 1:94c648931f84 | 2011 | |
Blaze513 | 1:94c648931f84 | 2012 | |
Blaze513 | 1:94c648931f84 | 2013 | |
Blaze513 | 1:94c648931f84 | 2014 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2015 | /* Read File */ |
Blaze513 | 1:94c648931f84 | 2016 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2017 | |
Blaze513 | 1:94c648931f84 | 2018 | FRESULT f_read ( |
Blaze513 | 1:94c648931f84 | 2019 | FAT_FIL *fp, /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 2020 | void *buff, /* Pointer to data buffer */ |
Blaze513 | 1:94c648931f84 | 2021 | UINT btr, /* Number of bytes to read */ |
Blaze513 | 1:94c648931f84 | 2022 | UINT *br /* Pointer to number of bytes read */ |
Blaze513 | 1:94c648931f84 | 2023 | ) |
Blaze513 | 1:94c648931f84 | 2024 | { |
Blaze513 | 1:94c648931f84 | 2025 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2026 | DWORD clst, sect, remain; |
Blaze513 | 1:94c648931f84 | 2027 | UINT rcnt, cc; |
Blaze513 | 1:94c648931f84 | 2028 | BYTE csect, *rbuff = (BYTE*)buff; |
Blaze513 | 1:94c648931f84 | 2029 | |
Blaze513 | 1:94c648931f84 | 2030 | |
Blaze513 | 1:94c648931f84 | 2031 | *br = 0; /* Initialize byte counter */ |
Blaze513 | 1:94c648931f84 | 2032 | |
Blaze513 | 1:94c648931f84 | 2033 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2034 | if (res != FR_OK) LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2035 | if (fp->flag & FA__ERROR) /* Check abort flag */ |
Blaze513 | 1:94c648931f84 | 2036 | LEAVE_FF(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2037 | if (!(fp->flag & FA_READ)) /* Check access mode */ |
Blaze513 | 1:94c648931f84 | 2038 | LEAVE_FF(fp->fs, FR_DENIED); |
Blaze513 | 1:94c648931f84 | 2039 | remain = fp->fsize - fp->fptr; |
Blaze513 | 1:94c648931f84 | 2040 | if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ |
Blaze513 | 1:94c648931f84 | 2041 | |
Blaze513 | 1:94c648931f84 | 2042 | for ( ; btr; /* Repeat until all data transferred */ |
Blaze513 | 1:94c648931f84 | 2043 | rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { |
Blaze513 | 1:94c648931f84 | 2044 | if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
Blaze513 | 1:94c648931f84 | 2045 | csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
Blaze513 | 1:94c648931f84 | 2046 | if (!csect) { /* On the cluster boundary? */ |
Blaze513 | 1:94c648931f84 | 2047 | clst = (fp->fptr == 0) ? /* On the top of the file? */ |
Blaze513 | 1:94c648931f84 | 2048 | fp->org_clust : get_fat(fp->fs, fp->curr_clust); |
Blaze513 | 1:94c648931f84 | 2049 | if (clst <= 1) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2050 | if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2051 | fp->curr_clust = clst; /* Update current cluster */ |
Blaze513 | 1:94c648931f84 | 2052 | } |
Blaze513 | 1:94c648931f84 | 2053 | sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */ |
Blaze513 | 1:94c648931f84 | 2054 | if (!sect) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2055 | sect += csect; |
Blaze513 | 1:94c648931f84 | 2056 | cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ |
Blaze513 | 1:94c648931f84 | 2057 | if (cc) { /* Read maximum contiguous sectors directly */ |
Blaze513 | 1:94c648931f84 | 2058 | if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ |
Blaze513 | 1:94c648931f84 | 2059 | cc = fp->fs->csize - csect; |
Blaze513 | 1:94c648931f84 | 2060 | if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2061 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2062 | #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */ |
Blaze513 | 1:94c648931f84 | 2063 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2064 | if (fp->fs->wflag && fp->fs->winsect - sect < cc) |
Blaze513 | 1:94c648931f84 | 2065 | mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); |
Blaze513 | 1:94c648931f84 | 2066 | #else |
Blaze513 | 1:94c648931f84 | 2067 | if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) |
Blaze513 | 1:94c648931f84 | 2068 | mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs)); |
Blaze513 | 1:94c648931f84 | 2069 | #endif |
Blaze513 | 1:94c648931f84 | 2070 | #endif |
Blaze513 | 1:94c648931f84 | 2071 | rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ |
Blaze513 | 1:94c648931f84 | 2072 | continue; |
Blaze513 | 1:94c648931f84 | 2073 | } |
Blaze513 | 1:94c648931f84 | 2074 | #if !_FS_TINY |
Blaze513 | 1:94c648931f84 | 2075 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2076 | if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */ |
Blaze513 | 1:94c648931f84 | 2077 | if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2078 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2079 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2080 | } |
Blaze513 | 1:94c648931f84 | 2081 | #endif |
Blaze513 | 1:94c648931f84 | 2082 | if (fp->dsect != sect) { /* Fill sector buffer with file data */ |
Blaze513 | 1:94c648931f84 | 2083 | if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2084 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2085 | } |
Blaze513 | 1:94c648931f84 | 2086 | #endif |
Blaze513 | 1:94c648931f84 | 2087 | fp->dsect = sect; |
Blaze513 | 1:94c648931f84 | 2088 | } |
Blaze513 | 1:94c648931f84 | 2089 | rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */ |
Blaze513 | 1:94c648931f84 | 2090 | if (rcnt > btr) rcnt = btr; |
Blaze513 | 1:94c648931f84 | 2091 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2092 | if (move_window(fp->fs, fp->dsect)) /* Move sector window */ |
Blaze513 | 1:94c648931f84 | 2093 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2094 | mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ |
Blaze513 | 1:94c648931f84 | 2095 | #else |
Blaze513 | 1:94c648931f84 | 2096 | mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ |
Blaze513 | 1:94c648931f84 | 2097 | #endif |
Blaze513 | 1:94c648931f84 | 2098 | } |
Blaze513 | 1:94c648931f84 | 2099 | |
Blaze513 | 1:94c648931f84 | 2100 | LEAVE_FF(fp->fs, FR_OK); |
Blaze513 | 1:94c648931f84 | 2101 | } |
Blaze513 | 1:94c648931f84 | 2102 | |
Blaze513 | 1:94c648931f84 | 2103 | |
Blaze513 | 1:94c648931f84 | 2104 | |
Blaze513 | 1:94c648931f84 | 2105 | |
Blaze513 | 1:94c648931f84 | 2106 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2107 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2108 | /* Write File */ |
Blaze513 | 1:94c648931f84 | 2109 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2110 | |
Blaze513 | 1:94c648931f84 | 2111 | FRESULT f_write ( |
Blaze513 | 1:94c648931f84 | 2112 | FAT_FIL *fp, /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 2113 | const void *buff, /* Pointer to the data to be written */ |
Blaze513 | 1:94c648931f84 | 2114 | UINT btw, /* Number of bytes to write */ |
Blaze513 | 1:94c648931f84 | 2115 | UINT *bw /* Pointer to number of bytes written */ |
Blaze513 | 1:94c648931f84 | 2116 | ) |
Blaze513 | 1:94c648931f84 | 2117 | { |
Blaze513 | 1:94c648931f84 | 2118 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2119 | DWORD clst, sect; |
Blaze513 | 1:94c648931f84 | 2120 | UINT wcnt, cc; |
Blaze513 | 1:94c648931f84 | 2121 | const BYTE *wbuff = (const BYTE*)buff; |
Blaze513 | 1:94c648931f84 | 2122 | BYTE csect; |
Blaze513 | 1:94c648931f84 | 2123 | |
Blaze513 | 1:94c648931f84 | 2124 | |
Blaze513 | 1:94c648931f84 | 2125 | *bw = 0; /* Initialize byte counter */ |
Blaze513 | 1:94c648931f84 | 2126 | |
Blaze513 | 1:94c648931f84 | 2127 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2128 | if (res != FR_OK) LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2129 | if (fp->flag & FA__ERROR) /* Check abort flag */ |
Blaze513 | 1:94c648931f84 | 2130 | LEAVE_FF(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2131 | if (!(fp->flag & FA_WRITE)) /* Check access mode */ |
Blaze513 | 1:94c648931f84 | 2132 | LEAVE_FF(fp->fs, FR_DENIED); |
Blaze513 | 1:94c648931f84 | 2133 | if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */ |
Blaze513 | 1:94c648931f84 | 2134 | |
Blaze513 | 1:94c648931f84 | 2135 | for ( ; btw; /* Repeat until all data transferred */ |
Blaze513 | 1:94c648931f84 | 2136 | wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { |
Blaze513 | 1:94c648931f84 | 2137 | if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
Blaze513 | 1:94c648931f84 | 2138 | csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
Blaze513 | 1:94c648931f84 | 2139 | if (!csect) { /* On the cluster boundary? */ |
Blaze513 | 1:94c648931f84 | 2140 | if (fp->fptr == 0) { /* On the top of the file? */ |
Blaze513 | 1:94c648931f84 | 2141 | clst = fp->org_clust; /* Follow from the origin */ |
Blaze513 | 1:94c648931f84 | 2142 | if (clst == 0) /* When there is no cluster chain, */ |
Blaze513 | 1:94c648931f84 | 2143 | fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */ |
Blaze513 | 1:94c648931f84 | 2144 | } else { /* Middle or end of the file */ |
Blaze513 | 1:94c648931f84 | 2145 | clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */ |
Blaze513 | 1:94c648931f84 | 2146 | } |
Blaze513 | 1:94c648931f84 | 2147 | if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ |
Blaze513 | 1:94c648931f84 | 2148 | if (clst == 1) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2149 | if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2150 | fp->curr_clust = clst; /* Update current cluster */ |
Blaze513 | 1:94c648931f84 | 2151 | } |
Blaze513 | 1:94c648931f84 | 2152 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2153 | if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */ |
Blaze513 | 1:94c648931f84 | 2154 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2155 | #else |
Blaze513 | 1:94c648931f84 | 2156 | if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */ |
Blaze513 | 1:94c648931f84 | 2157 | if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2158 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2159 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2160 | } |
Blaze513 | 1:94c648931f84 | 2161 | #endif |
Blaze513 | 1:94c648931f84 | 2162 | sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */ |
Blaze513 | 1:94c648931f84 | 2163 | if (!sect) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2164 | sect += csect; |
Blaze513 | 1:94c648931f84 | 2165 | cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ |
Blaze513 | 1:94c648931f84 | 2166 | if (cc) { /* Write maximum contiguous sectors directly */ |
Blaze513 | 1:94c648931f84 | 2167 | if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ |
Blaze513 | 1:94c648931f84 | 2168 | cc = fp->fs->csize - csect; |
Blaze513 | 1:94c648931f84 | 2169 | if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2170 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2171 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2172 | if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */ |
Blaze513 | 1:94c648931f84 | 2173 | mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs)); |
Blaze513 | 1:94c648931f84 | 2174 | fp->fs->wflag = 0; |
Blaze513 | 1:94c648931f84 | 2175 | } |
Blaze513 | 1:94c648931f84 | 2176 | #else |
Blaze513 | 1:94c648931f84 | 2177 | if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */ |
Blaze513 | 1:94c648931f84 | 2178 | mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs)); |
Blaze513 | 1:94c648931f84 | 2179 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2180 | } |
Blaze513 | 1:94c648931f84 | 2181 | #endif |
Blaze513 | 1:94c648931f84 | 2182 | wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ |
Blaze513 | 1:94c648931f84 | 2183 | continue; |
Blaze513 | 1:94c648931f84 | 2184 | } |
Blaze513 | 1:94c648931f84 | 2185 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2186 | if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */ |
Blaze513 | 1:94c648931f84 | 2187 | if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2188 | fp->fs->winsect = sect; |
Blaze513 | 1:94c648931f84 | 2189 | } |
Blaze513 | 1:94c648931f84 | 2190 | #else |
Blaze513 | 1:94c648931f84 | 2191 | if (fp->dsect != sect) { /* Fill sector buffer with file data */ |
Blaze513 | 1:94c648931f84 | 2192 | if (fp->fptr < fp->fsize && |
Blaze513 | 1:94c648931f84 | 2193 | disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2194 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2195 | } |
Blaze513 | 1:94c648931f84 | 2196 | #endif |
Blaze513 | 1:94c648931f84 | 2197 | fp->dsect = sect; |
Blaze513 | 1:94c648931f84 | 2198 | } |
Blaze513 | 1:94c648931f84 | 2199 | wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */ |
Blaze513 | 1:94c648931f84 | 2200 | if (wcnt > btw) wcnt = btw; |
Blaze513 | 1:94c648931f84 | 2201 | #if _FS_TINY |
Blaze513 | 1:94c648931f84 | 2202 | if (move_window(fp->fs, fp->dsect)) /* Move sector window */ |
Blaze513 | 1:94c648931f84 | 2203 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2204 | mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ |
Blaze513 | 1:94c648931f84 | 2205 | fp->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2206 | #else |
Blaze513 | 1:94c648931f84 | 2207 | mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ |
Blaze513 | 1:94c648931f84 | 2208 | fp->flag |= FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2209 | #endif |
Blaze513 | 1:94c648931f84 | 2210 | } |
Blaze513 | 1:94c648931f84 | 2211 | |
Blaze513 | 1:94c648931f84 | 2212 | if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ |
Blaze513 | 1:94c648931f84 | 2213 | fp->flag |= FA__WRITTEN; /* Set file changed flag */ |
Blaze513 | 1:94c648931f84 | 2214 | |
Blaze513 | 1:94c648931f84 | 2215 | LEAVE_FF(fp->fs, FR_OK); |
Blaze513 | 1:94c648931f84 | 2216 | } |
Blaze513 | 1:94c648931f84 | 2217 | |
Blaze513 | 1:94c648931f84 | 2218 | |
Blaze513 | 1:94c648931f84 | 2219 | |
Blaze513 | 1:94c648931f84 | 2220 | |
Blaze513 | 1:94c648931f84 | 2221 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2222 | /* Synchronize the File Object */ |
Blaze513 | 1:94c648931f84 | 2223 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2224 | |
Blaze513 | 1:94c648931f84 | 2225 | FRESULT f_sync ( |
Blaze513 | 1:94c648931f84 | 2226 | FAT_FIL *fp /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 2227 | ) |
Blaze513 | 1:94c648931f84 | 2228 | { |
Blaze513 | 1:94c648931f84 | 2229 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2230 | DWORD tim; |
Blaze513 | 1:94c648931f84 | 2231 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2232 | |
Blaze513 | 1:94c648931f84 | 2233 | |
Blaze513 | 1:94c648931f84 | 2234 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2235 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2236 | if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ |
Blaze513 | 1:94c648931f84 | 2237 | #if !_FS_TINY /* Write-back dirty buffer */ |
Blaze513 | 1:94c648931f84 | 2238 | if (fp->flag & FA__DIRTY) { |
Blaze513 | 1:94c648931f84 | 2239 | if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2240 | LEAVE_FF(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2241 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2242 | } |
Blaze513 | 1:94c648931f84 | 2243 | #endif |
Blaze513 | 1:94c648931f84 | 2244 | /* Update the directory entry */ |
Blaze513 | 1:94c648931f84 | 2245 | res = move_window(fp->fs, fp->dir_sect); |
Blaze513 | 1:94c648931f84 | 2246 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2247 | dir = fp->dir_ptr; |
Blaze513 | 1:94c648931f84 | 2248 | dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ |
Blaze513 | 1:94c648931f84 | 2249 | ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */ |
Blaze513 | 1:94c648931f84 | 2250 | ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */ |
Blaze513 | 1:94c648931f84 | 2251 | ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16); |
Blaze513 | 1:94c648931f84 | 2252 | tim = get_fattime(); /* Update updated time */ |
Blaze513 | 1:94c648931f84 | 2253 | ST_DWORD(dir+DIR_WrtTime, tim); |
Blaze513 | 1:94c648931f84 | 2254 | fp->flag &= ~FA__WRITTEN; |
Blaze513 | 1:94c648931f84 | 2255 | fp->fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2256 | res = sync(fp->fs); |
Blaze513 | 1:94c648931f84 | 2257 | } |
Blaze513 | 1:94c648931f84 | 2258 | } |
Blaze513 | 1:94c648931f84 | 2259 | } |
Blaze513 | 1:94c648931f84 | 2260 | |
Blaze513 | 1:94c648931f84 | 2261 | LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2262 | } |
Blaze513 | 1:94c648931f84 | 2263 | |
Blaze513 | 1:94c648931f84 | 2264 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 2265 | |
Blaze513 | 1:94c648931f84 | 2266 | |
Blaze513 | 1:94c648931f84 | 2267 | |
Blaze513 | 1:94c648931f84 | 2268 | |
Blaze513 | 1:94c648931f84 | 2269 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2270 | /* Close File */ |
Blaze513 | 1:94c648931f84 | 2271 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2272 | |
Blaze513 | 1:94c648931f84 | 2273 | FRESULT f_close ( |
Blaze513 | 1:94c648931f84 | 2274 | FAT_FIL *fp /* Pointer to the file object to be closed */ |
Blaze513 | 1:94c648931f84 | 2275 | ) |
Blaze513 | 1:94c648931f84 | 2276 | { |
Blaze513 | 1:94c648931f84 | 2277 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2278 | |
Blaze513 | 1:94c648931f84 | 2279 | #if _FS_READONLY |
Blaze513 | 1:94c648931f84 | 2280 | FATFS *fs = fp->fs; |
Blaze513 | 1:94c648931f84 | 2281 | res = validate(fs, fp->id); |
Blaze513 | 1:94c648931f84 | 2282 | if (res == FR_OK) fp->fs = 0; /* Discard file object */ |
Blaze513 | 1:94c648931f84 | 2283 | LEAVE_FF(fs, res); |
Blaze513 | 1:94c648931f84 | 2284 | |
Blaze513 | 1:94c648931f84 | 2285 | #else |
Blaze513 | 1:94c648931f84 | 2286 | res = f_sync(fp); /* Flush cached data */ |
Blaze513 | 1:94c648931f84 | 2287 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 2288 | if (res == FR_OK) { /* Decrement open counter */ |
Blaze513 | 1:94c648931f84 | 2289 | #if _FS_REENTRANT |
Blaze513 | 1:94c648931f84 | 2290 | res = validate(fp->fs, fp->id); |
Blaze513 | 1:94c648931f84 | 2291 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2292 | res = dec_lock(fp->fs, fp->lockid); |
Blaze513 | 1:94c648931f84 | 2293 | unlock_fs(fp->fs, FR_OK); |
Blaze513 | 1:94c648931f84 | 2294 | } |
Blaze513 | 1:94c648931f84 | 2295 | #else |
Blaze513 | 1:94c648931f84 | 2296 | res = dec_lock(fp->fs, fp->lockid); |
Blaze513 | 1:94c648931f84 | 2297 | #endif |
Blaze513 | 1:94c648931f84 | 2298 | } |
Blaze513 | 1:94c648931f84 | 2299 | #endif |
Blaze513 | 1:94c648931f84 | 2300 | if (res == FR_OK) fp->fs = 0; /* Discard file object */ |
Blaze513 | 1:94c648931f84 | 2301 | return res; |
Blaze513 | 1:94c648931f84 | 2302 | #endif |
Blaze513 | 1:94c648931f84 | 2303 | } |
Blaze513 | 1:94c648931f84 | 2304 | |
Blaze513 | 1:94c648931f84 | 2305 | |
Blaze513 | 1:94c648931f84 | 2306 | |
Blaze513 | 1:94c648931f84 | 2307 | |
Blaze513 | 1:94c648931f84 | 2308 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2309 | /* Change Current Drive/Directory */ |
Blaze513 | 1:94c648931f84 | 2310 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2311 | |
Blaze513 | 1:94c648931f84 | 2312 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 2313 | |
Blaze513 | 1:94c648931f84 | 2314 | FRESULT f_chdrive ( |
Blaze513 | 1:94c648931f84 | 2315 | BYTE drv /* Drive number */ |
Blaze513 | 1:94c648931f84 | 2316 | ) |
Blaze513 | 1:94c648931f84 | 2317 | { |
Blaze513 | 1:94c648931f84 | 2318 | if (drv >= _DRIVES) return FR_INVALID_DRIVE; |
Blaze513 | 1:94c648931f84 | 2319 | |
Blaze513 | 1:94c648931f84 | 2320 | Drive = drv; |
Blaze513 | 1:94c648931f84 | 2321 | |
Blaze513 | 1:94c648931f84 | 2322 | return FR_OK; |
Blaze513 | 1:94c648931f84 | 2323 | } |
Blaze513 | 1:94c648931f84 | 2324 | |
Blaze513 | 1:94c648931f84 | 2325 | |
Blaze513 | 1:94c648931f84 | 2326 | |
Blaze513 | 1:94c648931f84 | 2327 | |
Blaze513 | 1:94c648931f84 | 2328 | FRESULT f_chdir ( |
Blaze513 | 1:94c648931f84 | 2329 | const TCHAR *path /* Pointer to the directory path */ |
Blaze513 | 1:94c648931f84 | 2330 | ) |
Blaze513 | 1:94c648931f84 | 2331 | { |
Blaze513 | 1:94c648931f84 | 2332 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2333 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 2334 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2335 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2336 | |
Blaze513 | 1:94c648931f84 | 2337 | |
Blaze513 | 1:94c648931f84 | 2338 | res = chk_mounted(&path, &dj.fs, 0); |
Blaze513 | 1:94c648931f84 | 2339 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2340 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2341 | res = follow_path(&dj, path); /* Follow the path */ |
Blaze513 | 1:94c648931f84 | 2342 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2343 | if (res == FR_OK) { /* Follow completed */ |
Blaze513 | 1:94c648931f84 | 2344 | dir = dj.dir; /* Pointer to the entry */ |
Blaze513 | 1:94c648931f84 | 2345 | if (!dir) { |
Blaze513 | 1:94c648931f84 | 2346 | dj.fs->cdir = dj.sclust; /* Start directory itself */ |
Blaze513 | 1:94c648931f84 | 2347 | } else { |
Blaze513 | 1:94c648931f84 | 2348 | if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */ |
Blaze513 | 1:94c648931f84 | 2349 | dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); |
Blaze513 | 1:94c648931f84 | 2350 | else |
Blaze513 | 1:94c648931f84 | 2351 | res = FR_NO_PATH; /* Reached but a file */ |
Blaze513 | 1:94c648931f84 | 2352 | } |
Blaze513 | 1:94c648931f84 | 2353 | } |
Blaze513 | 1:94c648931f84 | 2354 | if (res == FR_NO_FILE) res = FR_NO_PATH; |
Blaze513 | 1:94c648931f84 | 2355 | } |
Blaze513 | 1:94c648931f84 | 2356 | |
Blaze513 | 1:94c648931f84 | 2357 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2358 | } |
Blaze513 | 1:94c648931f84 | 2359 | |
Blaze513 | 1:94c648931f84 | 2360 | #endif |
Blaze513 | 1:94c648931f84 | 2361 | |
Blaze513 | 1:94c648931f84 | 2362 | |
Blaze513 | 1:94c648931f84 | 2363 | |
Blaze513 | 1:94c648931f84 | 2364 | #if _FS_MINIMIZE <= 2 |
Blaze513 | 1:94c648931f84 | 2365 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2366 | /* Seek File R/W Pointer */ |
Blaze513 | 1:94c648931f84 | 2367 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2368 | |
Blaze513 | 1:94c648931f84 | 2369 | FRESULT f_lseek ( |
Blaze513 | 1:94c648931f84 | 2370 | FAT_FIL *fp, /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 2371 | DWORD ofs /* File pointer from top of file */ |
Blaze513 | 1:94c648931f84 | 2372 | ) |
Blaze513 | 1:94c648931f84 | 2373 | { |
Blaze513 | 1:94c648931f84 | 2374 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2375 | |
Blaze513 | 1:94c648931f84 | 2376 | |
Blaze513 | 1:94c648931f84 | 2377 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2378 | if (res != FR_OK) LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2379 | if (fp->flag & FA__ERROR) /* Check abort flag */ |
Blaze513 | 1:94c648931f84 | 2380 | LEAVE_FF(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2381 | |
Blaze513 | 1:94c648931f84 | 2382 | #if _USE_FASTSEEK |
Blaze513 | 1:94c648931f84 | 2383 | if (fp->cltbl) { /* Fast seek */ |
Blaze513 | 1:94c648931f84 | 2384 | DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl; |
Blaze513 | 1:94c648931f84 | 2385 | BYTE csc; |
Blaze513 | 1:94c648931f84 | 2386 | |
Blaze513 | 1:94c648931f84 | 2387 | tlen = *tbl++; |
Blaze513 | 1:94c648931f84 | 2388 | if (ofs == CREATE_LINKMAP) { /* Create link map table */ |
Blaze513 | 1:94c648931f84 | 2389 | cl = fp->org_clust; |
Blaze513 | 1:94c648931f84 | 2390 | if (cl) { |
Blaze513 | 1:94c648931f84 | 2391 | do { |
Blaze513 | 1:94c648931f84 | 2392 | if (tlen < 4) { /* Not enough table items */ |
Blaze513 | 1:94c648931f84 | 2393 | res = FR_NOT_ENOUGH_CORE; break; |
Blaze513 | 1:94c648931f84 | 2394 | } |
Blaze513 | 1:94c648931f84 | 2395 | tcl = cl; ncl = 0; |
Blaze513 | 1:94c648931f84 | 2396 | do { /* Get a fragment and store the top and length */ |
Blaze513 | 1:94c648931f84 | 2397 | pcl = cl; ncl++; |
Blaze513 | 1:94c648931f84 | 2398 | cl = get_fat(fp->fs, cl); |
Blaze513 | 1:94c648931f84 | 2399 | if (cl <= 1) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2400 | if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2401 | } while (cl == pcl + 1); |
Blaze513 | 1:94c648931f84 | 2402 | *tbl++ = ncl; *tbl++ = tcl; |
Blaze513 | 1:94c648931f84 | 2403 | tlen -= 2; |
Blaze513 | 1:94c648931f84 | 2404 | } while (cl < fp->fs->n_fatent); |
Blaze513 | 1:94c648931f84 | 2405 | } |
Blaze513 | 1:94c648931f84 | 2406 | *tbl = 0; /* Terminate table */ |
Blaze513 | 1:94c648931f84 | 2407 | |
Blaze513 | 1:94c648931f84 | 2408 | } else { /* Fast seek */ |
Blaze513 | 1:94c648931f84 | 2409 | if (ofs > fp->fsize) /* Clip offset at the file size */ |
Blaze513 | 1:94c648931f84 | 2410 | ofs = fp->fsize; |
Blaze513 | 1:94c648931f84 | 2411 | fp->fptr = ofs; /* Set file pointer */ |
Blaze513 | 1:94c648931f84 | 2412 | if (ofs) { |
Blaze513 | 1:94c648931f84 | 2413 | dsc = (ofs - 1) / SS(fp->fs); |
Blaze513 | 1:94c648931f84 | 2414 | cl = dsc / fp->fs->csize; |
Blaze513 | 1:94c648931f84 | 2415 | for (;;) { |
Blaze513 | 1:94c648931f84 | 2416 | ncl = *tbl++; |
Blaze513 | 1:94c648931f84 | 2417 | if (!ncl) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2418 | if (cl < ncl) break; |
Blaze513 | 1:94c648931f84 | 2419 | cl -= ncl; tbl++; |
Blaze513 | 1:94c648931f84 | 2420 | } |
Blaze513 | 1:94c648931f84 | 2421 | fp->curr_clust = cl + *tbl; |
Blaze513 | 1:94c648931f84 | 2422 | csc = (BYTE)(dsc & (fp->fs->csize - 1)); |
Blaze513 | 1:94c648931f84 | 2423 | dsc = clust2sect(fp->fs, fp->curr_clust); |
Blaze513 | 1:94c648931f84 | 2424 | if (!dsc) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2425 | dsc += csc; |
Blaze513 | 1:94c648931f84 | 2426 | if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { |
Blaze513 | 1:94c648931f84 | 2427 | #if !_FS_TINY |
Blaze513 | 1:94c648931f84 | 2428 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2429 | if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */ |
Blaze513 | 1:94c648931f84 | 2430 | if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2431 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2432 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2433 | } |
Blaze513 | 1:94c648931f84 | 2434 | #endif |
Blaze513 | 1:94c648931f84 | 2435 | if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2436 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2437 | #endif |
Blaze513 | 1:94c648931f84 | 2438 | fp->dsect = dsc; |
Blaze513 | 1:94c648931f84 | 2439 | } |
Blaze513 | 1:94c648931f84 | 2440 | } |
Blaze513 | 1:94c648931f84 | 2441 | } |
Blaze513 | 1:94c648931f84 | 2442 | } else |
Blaze513 | 1:94c648931f84 | 2443 | #endif |
Blaze513 | 1:94c648931f84 | 2444 | |
Blaze513 | 1:94c648931f84 | 2445 | /* Normal Seek */ |
Blaze513 | 1:94c648931f84 | 2446 | { |
Blaze513 | 1:94c648931f84 | 2447 | DWORD clst, bcs, nsect, ifptr; |
Blaze513 | 1:94c648931f84 | 2448 | |
Blaze513 | 1:94c648931f84 | 2449 | if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ |
Blaze513 | 1:94c648931f84 | 2450 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2451 | && !(fp->flag & FA_WRITE) |
Blaze513 | 1:94c648931f84 | 2452 | #endif |
Blaze513 | 1:94c648931f84 | 2453 | ) ofs = fp->fsize; |
Blaze513 | 1:94c648931f84 | 2454 | |
Blaze513 | 1:94c648931f84 | 2455 | ifptr = fp->fptr; |
Blaze513 | 1:94c648931f84 | 2456 | fp->fptr = nsect = 0; |
Blaze513 | 1:94c648931f84 | 2457 | if (ofs) { |
Blaze513 | 1:94c648931f84 | 2458 | bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ |
Blaze513 | 1:94c648931f84 | 2459 | if (ifptr > 0 && |
Blaze513 | 1:94c648931f84 | 2460 | (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ |
Blaze513 | 1:94c648931f84 | 2461 | fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ |
Blaze513 | 1:94c648931f84 | 2462 | ofs -= fp->fptr; |
Blaze513 | 1:94c648931f84 | 2463 | clst = fp->curr_clust; |
Blaze513 | 1:94c648931f84 | 2464 | } else { /* When seek to back cluster, */ |
Blaze513 | 1:94c648931f84 | 2465 | clst = fp->org_clust; /* start from the first cluster */ |
Blaze513 | 1:94c648931f84 | 2466 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2467 | if (clst == 0) { /* If no cluster chain, create a new chain */ |
Blaze513 | 1:94c648931f84 | 2468 | clst = create_chain(fp->fs, 0); |
Blaze513 | 1:94c648931f84 | 2469 | if (clst == 1) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2470 | if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2471 | fp->org_clust = clst; |
Blaze513 | 1:94c648931f84 | 2472 | } |
Blaze513 | 1:94c648931f84 | 2473 | #endif |
Blaze513 | 1:94c648931f84 | 2474 | fp->curr_clust = clst; |
Blaze513 | 1:94c648931f84 | 2475 | } |
Blaze513 | 1:94c648931f84 | 2476 | if (clst != 0) { |
Blaze513 | 1:94c648931f84 | 2477 | while (ofs > bcs) { /* Cluster following loop */ |
Blaze513 | 1:94c648931f84 | 2478 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2479 | if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ |
Blaze513 | 1:94c648931f84 | 2480 | clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ |
Blaze513 | 1:94c648931f84 | 2481 | if (clst == 0) { /* When disk gets full, clip file size */ |
Blaze513 | 1:94c648931f84 | 2482 | ofs = bcs; break; |
Blaze513 | 1:94c648931f84 | 2483 | } |
Blaze513 | 1:94c648931f84 | 2484 | } else |
Blaze513 | 1:94c648931f84 | 2485 | #endif |
Blaze513 | 1:94c648931f84 | 2486 | clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ |
Blaze513 | 1:94c648931f84 | 2487 | if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2488 | if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2489 | fp->curr_clust = clst; |
Blaze513 | 1:94c648931f84 | 2490 | fp->fptr += bcs; |
Blaze513 | 1:94c648931f84 | 2491 | ofs -= bcs; |
Blaze513 | 1:94c648931f84 | 2492 | } |
Blaze513 | 1:94c648931f84 | 2493 | fp->fptr += ofs; |
Blaze513 | 1:94c648931f84 | 2494 | if (ofs % SS(fp->fs)) { |
Blaze513 | 1:94c648931f84 | 2495 | nsect = clust2sect(fp->fs, clst); /* Current sector */ |
Blaze513 | 1:94c648931f84 | 2496 | if (!nsect) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 2497 | nsect += ofs / SS(fp->fs); |
Blaze513 | 1:94c648931f84 | 2498 | } |
Blaze513 | 1:94c648931f84 | 2499 | } |
Blaze513 | 1:94c648931f84 | 2500 | } |
Blaze513 | 1:94c648931f84 | 2501 | if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { |
Blaze513 | 1:94c648931f84 | 2502 | #if !_FS_TINY |
Blaze513 | 1:94c648931f84 | 2503 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2504 | if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */ |
Blaze513 | 1:94c648931f84 | 2505 | if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2506 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2507 | fp->flag &= ~FA__DIRTY; |
Blaze513 | 1:94c648931f84 | 2508 | } |
Blaze513 | 1:94c648931f84 | 2509 | #endif |
Blaze513 | 1:94c648931f84 | 2510 | if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 2511 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 2512 | #endif |
Blaze513 | 1:94c648931f84 | 2513 | fp->dsect = nsect; |
Blaze513 | 1:94c648931f84 | 2514 | } |
Blaze513 | 1:94c648931f84 | 2515 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2516 | if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */ |
Blaze513 | 1:94c648931f84 | 2517 | fp->fsize = fp->fptr; |
Blaze513 | 1:94c648931f84 | 2518 | fp->flag |= FA__WRITTEN; |
Blaze513 | 1:94c648931f84 | 2519 | } |
Blaze513 | 1:94c648931f84 | 2520 | #endif |
Blaze513 | 1:94c648931f84 | 2521 | } |
Blaze513 | 1:94c648931f84 | 2522 | |
Blaze513 | 1:94c648931f84 | 2523 | LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2524 | } |
Blaze513 | 1:94c648931f84 | 2525 | |
Blaze513 | 1:94c648931f84 | 2526 | |
Blaze513 | 1:94c648931f84 | 2527 | |
Blaze513 | 1:94c648931f84 | 2528 | #if _FS_MINIMIZE <= 1 |
Blaze513 | 1:94c648931f84 | 2529 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2530 | /* Create a Directroy Object */ |
Blaze513 | 1:94c648931f84 | 2531 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2532 | |
Blaze513 | 1:94c648931f84 | 2533 | FRESULT f_opendir ( |
Blaze513 | 1:94c648931f84 | 2534 | FAT_DIR *dj, /* Pointer to directory object to create */ |
Blaze513 | 1:94c648931f84 | 2535 | const TCHAR *path /* Pointer to the directory path */ |
Blaze513 | 1:94c648931f84 | 2536 | ) |
Blaze513 | 1:94c648931f84 | 2537 | { |
Blaze513 | 1:94c648931f84 | 2538 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2539 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2540 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2541 | |
Blaze513 | 1:94c648931f84 | 2542 | |
Blaze513 | 1:94c648931f84 | 2543 | res = chk_mounted(&path, &dj->fs, 0); |
Blaze513 | 1:94c648931f84 | 2544 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2545 | INIT_BUF(*dj); |
Blaze513 | 1:94c648931f84 | 2546 | res = follow_path(dj, path); /* Follow the path to the directory */ |
Blaze513 | 1:94c648931f84 | 2547 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2548 | if (res == FR_OK) { /* Follow completed */ |
Blaze513 | 1:94c648931f84 | 2549 | dir = dj->dir; |
Blaze513 | 1:94c648931f84 | 2550 | if (dir) { /* It is not the current dir */ |
Blaze513 | 1:94c648931f84 | 2551 | if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */ |
Blaze513 | 1:94c648931f84 | 2552 | dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); |
Blaze513 | 1:94c648931f84 | 2553 | } else { /* The object is not a directory */ |
Blaze513 | 1:94c648931f84 | 2554 | res = FR_NO_PATH; |
Blaze513 | 1:94c648931f84 | 2555 | } |
Blaze513 | 1:94c648931f84 | 2556 | } |
Blaze513 | 1:94c648931f84 | 2557 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2558 | dj->id = dj->fs->id; |
Blaze513 | 1:94c648931f84 | 2559 | res = dir_sdi(dj, 0); /* Rewind dir */ |
Blaze513 | 1:94c648931f84 | 2560 | } |
Blaze513 | 1:94c648931f84 | 2561 | } |
Blaze513 | 1:94c648931f84 | 2562 | if (res == FR_NO_FILE) res = FR_NO_PATH; |
Blaze513 | 1:94c648931f84 | 2563 | } |
Blaze513 | 1:94c648931f84 | 2564 | |
Blaze513 | 1:94c648931f84 | 2565 | LEAVE_FF(dj->fs, res); |
Blaze513 | 1:94c648931f84 | 2566 | } |
Blaze513 | 1:94c648931f84 | 2567 | |
Blaze513 | 1:94c648931f84 | 2568 | |
Blaze513 | 1:94c648931f84 | 2569 | |
Blaze513 | 1:94c648931f84 | 2570 | |
Blaze513 | 1:94c648931f84 | 2571 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2572 | /* Read Directory Entry in Sequense */ |
Blaze513 | 1:94c648931f84 | 2573 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2574 | |
Blaze513 | 1:94c648931f84 | 2575 | FRESULT f_readdir ( |
Blaze513 | 1:94c648931f84 | 2576 | FAT_DIR *dj, /* Pointer to the open directory object */ |
Blaze513 | 1:94c648931f84 | 2577 | FILINFO *fno /* Pointer to file information to return */ |
Blaze513 | 1:94c648931f84 | 2578 | ) |
Blaze513 | 1:94c648931f84 | 2579 | { |
Blaze513 | 1:94c648931f84 | 2580 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2581 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2582 | |
Blaze513 | 1:94c648931f84 | 2583 | |
Blaze513 | 1:94c648931f84 | 2584 | res = validate(dj->fs, dj->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2585 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2586 | if (!fno) { |
Blaze513 | 1:94c648931f84 | 2587 | res = dir_sdi(dj, 0); |
Blaze513 | 1:94c648931f84 | 2588 | } else { |
Blaze513 | 1:94c648931f84 | 2589 | INIT_BUF(*dj); |
Blaze513 | 1:94c648931f84 | 2590 | res = dir_read(dj); |
Blaze513 | 1:94c648931f84 | 2591 | if (res == FR_NO_FILE) { |
Blaze513 | 1:94c648931f84 | 2592 | dj->sect = 0; |
Blaze513 | 1:94c648931f84 | 2593 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 2594 | } |
Blaze513 | 1:94c648931f84 | 2595 | if (res == FR_OK) { /* A valid entry is found */ |
Blaze513 | 1:94c648931f84 | 2596 | get_fileinfo(dj, fno); /* Get the object information */ |
Blaze513 | 1:94c648931f84 | 2597 | res = dir_next(dj, 0); /* Increment index for next */ |
Blaze513 | 1:94c648931f84 | 2598 | if (res == FR_NO_FILE) { |
Blaze513 | 1:94c648931f84 | 2599 | dj->sect = 0; |
Blaze513 | 1:94c648931f84 | 2600 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 2601 | } |
Blaze513 | 1:94c648931f84 | 2602 | } |
Blaze513 | 1:94c648931f84 | 2603 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2604 | } |
Blaze513 | 1:94c648931f84 | 2605 | } |
Blaze513 | 1:94c648931f84 | 2606 | |
Blaze513 | 1:94c648931f84 | 2607 | LEAVE_FF(dj->fs, res); |
Blaze513 | 1:94c648931f84 | 2608 | } |
Blaze513 | 1:94c648931f84 | 2609 | |
Blaze513 | 1:94c648931f84 | 2610 | |
Blaze513 | 1:94c648931f84 | 2611 | |
Blaze513 | 1:94c648931f84 | 2612 | #if _FS_MINIMIZE == 0 |
Blaze513 | 1:94c648931f84 | 2613 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2614 | /* Get File Status */ |
Blaze513 | 1:94c648931f84 | 2615 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2616 | |
Blaze513 | 1:94c648931f84 | 2617 | FRESULT f_stat ( |
Blaze513 | 1:94c648931f84 | 2618 | const TCHAR *path, /* Pointer to the file path */ |
Blaze513 | 1:94c648931f84 | 2619 | FILINFO *fno /* Pointer to file information to return */ |
Blaze513 | 1:94c648931f84 | 2620 | ) |
Blaze513 | 1:94c648931f84 | 2621 | { |
Blaze513 | 1:94c648931f84 | 2622 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2623 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 2624 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2625 | |
Blaze513 | 1:94c648931f84 | 2626 | |
Blaze513 | 1:94c648931f84 | 2627 | res = chk_mounted(&path, &dj.fs, 0); |
Blaze513 | 1:94c648931f84 | 2628 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2629 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2630 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 2631 | if (res == FR_OK) { /* Follow completed */ |
Blaze513 | 1:94c648931f84 | 2632 | if (dj.dir) /* Found an object */ |
Blaze513 | 1:94c648931f84 | 2633 | get_fileinfo(&dj, fno); |
Blaze513 | 1:94c648931f84 | 2634 | else /* It is root dir */ |
Blaze513 | 1:94c648931f84 | 2635 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2636 | } |
Blaze513 | 1:94c648931f84 | 2637 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2638 | } |
Blaze513 | 1:94c648931f84 | 2639 | |
Blaze513 | 1:94c648931f84 | 2640 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2641 | } |
Blaze513 | 1:94c648931f84 | 2642 | |
Blaze513 | 1:94c648931f84 | 2643 | |
Blaze513 | 1:94c648931f84 | 2644 | |
Blaze513 | 1:94c648931f84 | 2645 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 2646 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2647 | /* Get Number of Free Clusters */ |
Blaze513 | 1:94c648931f84 | 2648 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2649 | |
Blaze513 | 1:94c648931f84 | 2650 | FRESULT f_getfree ( |
Blaze513 | 1:94c648931f84 | 2651 | const TCHAR *path, /* Pointer to the logical drive number (root dir) */ |
Blaze513 | 1:94c648931f84 | 2652 | DWORD *nclst, /* Pointer to the variable to return number of free clusters */ |
Blaze513 | 1:94c648931f84 | 2653 | FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */ |
Blaze513 | 1:94c648931f84 | 2654 | ) |
Blaze513 | 1:94c648931f84 | 2655 | { |
Blaze513 | 1:94c648931f84 | 2656 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2657 | DWORD n, clst, sect, stat; |
Blaze513 | 1:94c648931f84 | 2658 | UINT i; |
Blaze513 | 1:94c648931f84 | 2659 | BYTE fat, *p; |
Blaze513 | 1:94c648931f84 | 2660 | |
Blaze513 | 1:94c648931f84 | 2661 | |
Blaze513 | 1:94c648931f84 | 2662 | /* Get drive number */ |
Blaze513 | 1:94c648931f84 | 2663 | res = chk_mounted(&path, fatfs, 0); |
Blaze513 | 1:94c648931f84 | 2664 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2665 | /* If free_clust is valid, return it without full cluster scan */ |
Blaze513 | 1:94c648931f84 | 2666 | if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) { |
Blaze513 | 1:94c648931f84 | 2667 | *nclst = (*fatfs)->free_clust; |
Blaze513 | 1:94c648931f84 | 2668 | } else { |
Blaze513 | 1:94c648931f84 | 2669 | /* Get number of free clusters */ |
Blaze513 | 1:94c648931f84 | 2670 | fat = (*fatfs)->fs_type; |
Blaze513 | 1:94c648931f84 | 2671 | n = 0; |
Blaze513 | 1:94c648931f84 | 2672 | if (fat == FS_FAT12) { |
Blaze513 | 1:94c648931f84 | 2673 | clst = 2; |
Blaze513 | 1:94c648931f84 | 2674 | do { |
Blaze513 | 1:94c648931f84 | 2675 | stat = get_fat(*fatfs, clst); |
Blaze513 | 1:94c648931f84 | 2676 | if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } |
Blaze513 | 1:94c648931f84 | 2677 | if (stat == 1) { res = FR_INT_ERR; break; } |
Blaze513 | 1:94c648931f84 | 2678 | if (stat == 0) n++; |
Blaze513 | 1:94c648931f84 | 2679 | } while (++clst < (*fatfs)->n_fatent); |
Blaze513 | 1:94c648931f84 | 2680 | } else { |
Blaze513 | 1:94c648931f84 | 2681 | clst = (*fatfs)->n_fatent; |
Blaze513 | 1:94c648931f84 | 2682 | sect = (*fatfs)->fatbase; |
Blaze513 | 1:94c648931f84 | 2683 | i = 0; p = 0; |
Blaze513 | 1:94c648931f84 | 2684 | do { |
Blaze513 | 1:94c648931f84 | 2685 | if (!i) { |
Blaze513 | 1:94c648931f84 | 2686 | res = move_window(*fatfs, sect++); |
Blaze513 | 1:94c648931f84 | 2687 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 2688 | p = (*fatfs)->win; |
Blaze513 | 1:94c648931f84 | 2689 | i = SS(*fatfs); |
Blaze513 | 1:94c648931f84 | 2690 | } |
Blaze513 | 1:94c648931f84 | 2691 | if (fat == FS_FAT16) { |
Blaze513 | 1:94c648931f84 | 2692 | if (LD_WORD(p) == 0) n++; |
Blaze513 | 1:94c648931f84 | 2693 | p += 2; i -= 2; |
Blaze513 | 1:94c648931f84 | 2694 | } else { |
Blaze513 | 1:94c648931f84 | 2695 | if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++; |
Blaze513 | 1:94c648931f84 | 2696 | p += 4; i -= 4; |
Blaze513 | 1:94c648931f84 | 2697 | } |
Blaze513 | 1:94c648931f84 | 2698 | } while (--clst); |
Blaze513 | 1:94c648931f84 | 2699 | } |
Blaze513 | 1:94c648931f84 | 2700 | (*fatfs)->free_clust = n; |
Blaze513 | 1:94c648931f84 | 2701 | if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1; |
Blaze513 | 1:94c648931f84 | 2702 | *nclst = n; |
Blaze513 | 1:94c648931f84 | 2703 | } |
Blaze513 | 1:94c648931f84 | 2704 | } |
Blaze513 | 1:94c648931f84 | 2705 | LEAVE_FF(*fatfs, res); |
Blaze513 | 1:94c648931f84 | 2706 | } |
Blaze513 | 1:94c648931f84 | 2707 | |
Blaze513 | 1:94c648931f84 | 2708 | |
Blaze513 | 1:94c648931f84 | 2709 | |
Blaze513 | 1:94c648931f84 | 2710 | |
Blaze513 | 1:94c648931f84 | 2711 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2712 | /* Truncate File */ |
Blaze513 | 1:94c648931f84 | 2713 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2714 | |
Blaze513 | 1:94c648931f84 | 2715 | FRESULT f_truncate ( |
Blaze513 | 1:94c648931f84 | 2716 | FAT_FIL *fp /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 2717 | ) |
Blaze513 | 1:94c648931f84 | 2718 | { |
Blaze513 | 1:94c648931f84 | 2719 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2720 | DWORD ncl; |
Blaze513 | 1:94c648931f84 | 2721 | |
Blaze513 | 1:94c648931f84 | 2722 | |
Blaze513 | 1:94c648931f84 | 2723 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 2724 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2725 | if (fp->flag & FA__ERROR) { /* Check abort flag */ |
Blaze513 | 1:94c648931f84 | 2726 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 2727 | } else { |
Blaze513 | 1:94c648931f84 | 2728 | if (!(fp->flag & FA_WRITE)) /* Check access mode */ |
Blaze513 | 1:94c648931f84 | 2729 | res = FR_DENIED; |
Blaze513 | 1:94c648931f84 | 2730 | } |
Blaze513 | 1:94c648931f84 | 2731 | } |
Blaze513 | 1:94c648931f84 | 2732 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2733 | if (fp->fsize > fp->fptr) { |
Blaze513 | 1:94c648931f84 | 2734 | fp->fsize = fp->fptr; /* Set file size to current R/W point */ |
Blaze513 | 1:94c648931f84 | 2735 | fp->flag |= FA__WRITTEN; |
Blaze513 | 1:94c648931f84 | 2736 | if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ |
Blaze513 | 1:94c648931f84 | 2737 | res = remove_chain(fp->fs, fp->org_clust); |
Blaze513 | 1:94c648931f84 | 2738 | fp->org_clust = 0; |
Blaze513 | 1:94c648931f84 | 2739 | } else { /* When truncate a part of the file, remove remaining clusters */ |
Blaze513 | 1:94c648931f84 | 2740 | ncl = get_fat(fp->fs, fp->curr_clust); |
Blaze513 | 1:94c648931f84 | 2741 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 2742 | if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 2743 | if (ncl == 1) res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 2744 | if (res == FR_OK && ncl < fp->fs->n_fatent) { |
Blaze513 | 1:94c648931f84 | 2745 | res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF); |
Blaze513 | 1:94c648931f84 | 2746 | if (res == FR_OK) res = remove_chain(fp->fs, ncl); |
Blaze513 | 1:94c648931f84 | 2747 | } |
Blaze513 | 1:94c648931f84 | 2748 | } |
Blaze513 | 1:94c648931f84 | 2749 | } |
Blaze513 | 1:94c648931f84 | 2750 | if (res != FR_OK) fp->flag |= FA__ERROR; |
Blaze513 | 1:94c648931f84 | 2751 | } |
Blaze513 | 1:94c648931f84 | 2752 | |
Blaze513 | 1:94c648931f84 | 2753 | LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 2754 | } |
Blaze513 | 1:94c648931f84 | 2755 | |
Blaze513 | 1:94c648931f84 | 2756 | |
Blaze513 | 1:94c648931f84 | 2757 | |
Blaze513 | 1:94c648931f84 | 2758 | |
Blaze513 | 1:94c648931f84 | 2759 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2760 | /* Delete a File or Directory */ |
Blaze513 | 1:94c648931f84 | 2761 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2762 | |
Blaze513 | 1:94c648931f84 | 2763 | FRESULT f_unlink ( |
Blaze513 | 1:94c648931f84 | 2764 | const TCHAR *path /* Pointer to the file or directory path */ |
Blaze513 | 1:94c648931f84 | 2765 | ) |
Blaze513 | 1:94c648931f84 | 2766 | { |
Blaze513 | 1:94c648931f84 | 2767 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2768 | FAT_DIR dj, sdj; |
Blaze513 | 1:94c648931f84 | 2769 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2770 | DWORD dclst; |
Blaze513 | 1:94c648931f84 | 2771 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2772 | |
Blaze513 | 1:94c648931f84 | 2773 | |
Blaze513 | 1:94c648931f84 | 2774 | res = chk_mounted(&path, &dj.fs, 1); |
Blaze513 | 1:94c648931f84 | 2775 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2776 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2777 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 2778 | if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
Blaze513 | 1:94c648931f84 | 2779 | res = FR_INVALID_NAME; /* Cannot remove dot entry */ |
Blaze513 | 1:94c648931f84 | 2780 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 2781 | if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */ |
Blaze513 | 1:94c648931f84 | 2782 | #endif |
Blaze513 | 1:94c648931f84 | 2783 | if (res == FR_OK) { /* The object is accessible */ |
Blaze513 | 1:94c648931f84 | 2784 | dir = dj.dir; |
Blaze513 | 1:94c648931f84 | 2785 | if (!dir) { |
Blaze513 | 1:94c648931f84 | 2786 | res = FR_INVALID_NAME; /* Cannot remove the start directory */ |
Blaze513 | 1:94c648931f84 | 2787 | } else { |
Blaze513 | 1:94c648931f84 | 2788 | if (dir[DIR_Attr] & AM_RDO) |
Blaze513 | 1:94c648931f84 | 2789 | res = FR_DENIED; /* Cannot remove R/O object */ |
Blaze513 | 1:94c648931f84 | 2790 | } |
Blaze513 | 1:94c648931f84 | 2791 | dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); |
Blaze513 | 1:94c648931f84 | 2792 | if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */ |
Blaze513 | 1:94c648931f84 | 2793 | if (dclst < 2) { |
Blaze513 | 1:94c648931f84 | 2794 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 2795 | } else { |
Blaze513 | 1:94c648931f84 | 2796 | mem_cpy(&sdj, &dj, sizeof(FAT_DIR)); /* Check if the sub-dir is empty or not */ |
Blaze513 | 1:94c648931f84 | 2797 | sdj.sclust = dclst; |
Blaze513 | 1:94c648931f84 | 2798 | res = dir_sdi(&sdj, 2); /* Exclude dot entries */ |
Blaze513 | 1:94c648931f84 | 2799 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2800 | res = dir_read(&sdj); |
Blaze513 | 1:94c648931f84 | 2801 | if (res == FR_OK /* Not empty dir */ |
Blaze513 | 1:94c648931f84 | 2802 | #if _FS_RPATH |
Blaze513 | 1:94c648931f84 | 2803 | || dclst == sdj.fs->cdir /* Current dir */ |
Blaze513 | 1:94c648931f84 | 2804 | #endif |
Blaze513 | 1:94c648931f84 | 2805 | ) res = FR_DENIED; |
Blaze513 | 1:94c648931f84 | 2806 | if (res == FR_NO_FILE) res = FR_OK; /* Empty */ |
Blaze513 | 1:94c648931f84 | 2807 | } |
Blaze513 | 1:94c648931f84 | 2808 | } |
Blaze513 | 1:94c648931f84 | 2809 | } |
Blaze513 | 1:94c648931f84 | 2810 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2811 | res = dir_remove(&dj); /* Remove the directory entry */ |
Blaze513 | 1:94c648931f84 | 2812 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2813 | if (dclst) /* Remove the cluster chain if exist */ |
Blaze513 | 1:94c648931f84 | 2814 | res = remove_chain(dj.fs, dclst); |
Blaze513 | 1:94c648931f84 | 2815 | if (res == FR_OK) res = sync(dj.fs); |
Blaze513 | 1:94c648931f84 | 2816 | } |
Blaze513 | 1:94c648931f84 | 2817 | } |
Blaze513 | 1:94c648931f84 | 2818 | } |
Blaze513 | 1:94c648931f84 | 2819 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2820 | } |
Blaze513 | 1:94c648931f84 | 2821 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2822 | } |
Blaze513 | 1:94c648931f84 | 2823 | |
Blaze513 | 1:94c648931f84 | 2824 | |
Blaze513 | 1:94c648931f84 | 2825 | |
Blaze513 | 1:94c648931f84 | 2826 | |
Blaze513 | 1:94c648931f84 | 2827 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2828 | /* Create a Directory */ |
Blaze513 | 1:94c648931f84 | 2829 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2830 | |
Blaze513 | 1:94c648931f84 | 2831 | FRESULT f_mkdir ( |
Blaze513 | 1:94c648931f84 | 2832 | const TCHAR *path /* Pointer to the directory path */ |
Blaze513 | 1:94c648931f84 | 2833 | ) |
Blaze513 | 1:94c648931f84 | 2834 | { |
Blaze513 | 1:94c648931f84 | 2835 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2836 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 2837 | BYTE *dir, n; |
Blaze513 | 1:94c648931f84 | 2838 | DWORD dsc, dcl, pcl, tim = get_fattime(); |
Blaze513 | 1:94c648931f84 | 2839 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2840 | |
Blaze513 | 1:94c648931f84 | 2841 | |
Blaze513 | 1:94c648931f84 | 2842 | res = chk_mounted(&path, &dj.fs, 1); |
Blaze513 | 1:94c648931f84 | 2843 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2844 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2845 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 2846 | if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */ |
Blaze513 | 1:94c648931f84 | 2847 | if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT)) |
Blaze513 | 1:94c648931f84 | 2848 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2849 | if (res == FR_NO_FILE) { /* Can create a new directory */ |
Blaze513 | 1:94c648931f84 | 2850 | dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */ |
Blaze513 | 1:94c648931f84 | 2851 | res = FR_OK; |
Blaze513 | 1:94c648931f84 | 2852 | if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ |
Blaze513 | 1:94c648931f84 | 2853 | if (dcl == 1) res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 2854 | if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 2855 | if (res == FR_OK) /* Flush FAT */ |
Blaze513 | 1:94c648931f84 | 2856 | res = move_window(dj.fs, 0); |
Blaze513 | 1:94c648931f84 | 2857 | if (res == FR_OK) { /* Initialize the new directory table */ |
Blaze513 | 1:94c648931f84 | 2858 | dsc = clust2sect(dj.fs, dcl); |
Blaze513 | 1:94c648931f84 | 2859 | dir = dj.fs->win; |
Blaze513 | 1:94c648931f84 | 2860 | mem_set(dir, 0, SS(dj.fs)); |
Blaze513 | 1:94c648931f84 | 2861 | mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */ |
Blaze513 | 1:94c648931f84 | 2862 | dir[DIR_Name] = '.'; |
Blaze513 | 1:94c648931f84 | 2863 | dir[DIR_Attr] = AM_DIR; |
Blaze513 | 1:94c648931f84 | 2864 | ST_DWORD(dir+DIR_WrtTime, tim); |
Blaze513 | 1:94c648931f84 | 2865 | ST_WORD(dir+DIR_FstClusLO, dcl); |
Blaze513 | 1:94c648931f84 | 2866 | ST_WORD(dir+DIR_FstClusHI, dcl >> 16); |
Blaze513 | 1:94c648931f84 | 2867 | mem_cpy(dir+32, dir, 32); /* Create ".." entry */ |
Blaze513 | 1:94c648931f84 | 2868 | dir[33] = '.'; pcl = dj.sclust; |
Blaze513 | 1:94c648931f84 | 2869 | if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase) |
Blaze513 | 1:94c648931f84 | 2870 | pcl = 0; |
Blaze513 | 1:94c648931f84 | 2871 | ST_WORD(dir+32+DIR_FstClusLO, pcl); |
Blaze513 | 1:94c648931f84 | 2872 | ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16); |
Blaze513 | 1:94c648931f84 | 2873 | for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */ |
Blaze513 | 1:94c648931f84 | 2874 | dj.fs->winsect = dsc++; |
Blaze513 | 1:94c648931f84 | 2875 | dj.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2876 | res = move_window(dj.fs, 0); |
Blaze513 | 1:94c648931f84 | 2877 | if (res != FR_OK) break; |
Blaze513 | 1:94c648931f84 | 2878 | mem_set(dir, 0, SS(dj.fs)); |
Blaze513 | 1:94c648931f84 | 2879 | } |
Blaze513 | 1:94c648931f84 | 2880 | } |
Blaze513 | 1:94c648931f84 | 2881 | if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */ |
Blaze513 | 1:94c648931f84 | 2882 | if (res != FR_OK) { |
Blaze513 | 1:94c648931f84 | 2883 | remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */ |
Blaze513 | 1:94c648931f84 | 2884 | } else { |
Blaze513 | 1:94c648931f84 | 2885 | dir = dj.dir; |
Blaze513 | 1:94c648931f84 | 2886 | dir[DIR_Attr] = AM_DIR; /* Attribute */ |
Blaze513 | 1:94c648931f84 | 2887 | ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */ |
Blaze513 | 1:94c648931f84 | 2888 | ST_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */ |
Blaze513 | 1:94c648931f84 | 2889 | ST_WORD(dir+DIR_FstClusHI, dcl >> 16); |
Blaze513 | 1:94c648931f84 | 2890 | dj.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2891 | res = sync(dj.fs); |
Blaze513 | 1:94c648931f84 | 2892 | } |
Blaze513 | 1:94c648931f84 | 2893 | } |
Blaze513 | 1:94c648931f84 | 2894 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2895 | } |
Blaze513 | 1:94c648931f84 | 2896 | |
Blaze513 | 1:94c648931f84 | 2897 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2898 | } |
Blaze513 | 1:94c648931f84 | 2899 | |
Blaze513 | 1:94c648931f84 | 2900 | |
Blaze513 | 1:94c648931f84 | 2901 | |
Blaze513 | 1:94c648931f84 | 2902 | |
Blaze513 | 1:94c648931f84 | 2903 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2904 | /* Change Attribute */ |
Blaze513 | 1:94c648931f84 | 2905 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2906 | |
Blaze513 | 1:94c648931f84 | 2907 | FRESULT f_chmod ( |
Blaze513 | 1:94c648931f84 | 2908 | const TCHAR *path, /* Pointer to the file path */ |
Blaze513 | 1:94c648931f84 | 2909 | BYTE value, /* Attribute bits */ |
Blaze513 | 1:94c648931f84 | 2910 | BYTE mask /* Attribute mask to change */ |
Blaze513 | 1:94c648931f84 | 2911 | ) |
Blaze513 | 1:94c648931f84 | 2912 | { |
Blaze513 | 1:94c648931f84 | 2913 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2914 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 2915 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2916 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2917 | |
Blaze513 | 1:94c648931f84 | 2918 | |
Blaze513 | 1:94c648931f84 | 2919 | res = chk_mounted(&path, &dj.fs, 1); |
Blaze513 | 1:94c648931f84 | 2920 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2921 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2922 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 2923 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2924 | if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
Blaze513 | 1:94c648931f84 | 2925 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2926 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2927 | dir = dj.dir; |
Blaze513 | 1:94c648931f84 | 2928 | if (!dir) { /* Is it a root directory? */ |
Blaze513 | 1:94c648931f84 | 2929 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2930 | } else { /* File or sub directory */ |
Blaze513 | 1:94c648931f84 | 2931 | mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ |
Blaze513 | 1:94c648931f84 | 2932 | dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ |
Blaze513 | 1:94c648931f84 | 2933 | dj.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2934 | res = sync(dj.fs); |
Blaze513 | 1:94c648931f84 | 2935 | } |
Blaze513 | 1:94c648931f84 | 2936 | } |
Blaze513 | 1:94c648931f84 | 2937 | } |
Blaze513 | 1:94c648931f84 | 2938 | |
Blaze513 | 1:94c648931f84 | 2939 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2940 | } |
Blaze513 | 1:94c648931f84 | 2941 | |
Blaze513 | 1:94c648931f84 | 2942 | |
Blaze513 | 1:94c648931f84 | 2943 | |
Blaze513 | 1:94c648931f84 | 2944 | |
Blaze513 | 1:94c648931f84 | 2945 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2946 | /* Change Timestamp */ |
Blaze513 | 1:94c648931f84 | 2947 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2948 | |
Blaze513 | 1:94c648931f84 | 2949 | FRESULT f_utime ( |
Blaze513 | 1:94c648931f84 | 2950 | const TCHAR *path, /* Pointer to the file/directory name */ |
Blaze513 | 1:94c648931f84 | 2951 | const FILINFO *fno /* Pointer to the time stamp to be set */ |
Blaze513 | 1:94c648931f84 | 2952 | ) |
Blaze513 | 1:94c648931f84 | 2953 | { |
Blaze513 | 1:94c648931f84 | 2954 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2955 | FAT_DIR dj; |
Blaze513 | 1:94c648931f84 | 2956 | BYTE *dir; |
Blaze513 | 1:94c648931f84 | 2957 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 2958 | |
Blaze513 | 1:94c648931f84 | 2959 | |
Blaze513 | 1:94c648931f84 | 2960 | res = chk_mounted(&path, &dj.fs, 1); |
Blaze513 | 1:94c648931f84 | 2961 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2962 | INIT_BUF(dj); |
Blaze513 | 1:94c648931f84 | 2963 | res = follow_path(&dj, path); /* Follow the file path */ |
Blaze513 | 1:94c648931f84 | 2964 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 2965 | if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT)) |
Blaze513 | 1:94c648931f84 | 2966 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2967 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 2968 | dir = dj.dir; |
Blaze513 | 1:94c648931f84 | 2969 | if (!dir) { /* Root directory */ |
Blaze513 | 1:94c648931f84 | 2970 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 2971 | } else { /* File or sub-directory */ |
Blaze513 | 1:94c648931f84 | 2972 | ST_WORD(dir+DIR_WrtTime, fno->ftime); |
Blaze513 | 1:94c648931f84 | 2973 | ST_WORD(dir+DIR_WrtDate, fno->fdate); |
Blaze513 | 1:94c648931f84 | 2974 | dj.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 2975 | res = sync(dj.fs); |
Blaze513 | 1:94c648931f84 | 2976 | } |
Blaze513 | 1:94c648931f84 | 2977 | } |
Blaze513 | 1:94c648931f84 | 2978 | } |
Blaze513 | 1:94c648931f84 | 2979 | |
Blaze513 | 1:94c648931f84 | 2980 | LEAVE_FF(dj.fs, res); |
Blaze513 | 1:94c648931f84 | 2981 | } |
Blaze513 | 1:94c648931f84 | 2982 | |
Blaze513 | 1:94c648931f84 | 2983 | |
Blaze513 | 1:94c648931f84 | 2984 | |
Blaze513 | 1:94c648931f84 | 2985 | |
Blaze513 | 1:94c648931f84 | 2986 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2987 | /* Rename File/Directory */ |
Blaze513 | 1:94c648931f84 | 2988 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 2989 | |
Blaze513 | 1:94c648931f84 | 2990 | FRESULT f_rename ( |
Blaze513 | 1:94c648931f84 | 2991 | const TCHAR *path_old, /* Pointer to the old name */ |
Blaze513 | 1:94c648931f84 | 2992 | const TCHAR *path_new /* Pointer to the new name */ |
Blaze513 | 1:94c648931f84 | 2993 | ) |
Blaze513 | 1:94c648931f84 | 2994 | { |
Blaze513 | 1:94c648931f84 | 2995 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 2996 | FAT_DIR djo, djn; |
Blaze513 | 1:94c648931f84 | 2997 | BYTE buf[21], *dir; |
Blaze513 | 1:94c648931f84 | 2998 | DWORD dw; |
Blaze513 | 1:94c648931f84 | 2999 | DEF_NAMEBUF; |
Blaze513 | 1:94c648931f84 | 3000 | |
Blaze513 | 1:94c648931f84 | 3001 | |
Blaze513 | 1:94c648931f84 | 3002 | res = chk_mounted(&path_old, &djo.fs, 1); |
Blaze513 | 1:94c648931f84 | 3003 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 3004 | djn.fs = djo.fs; |
Blaze513 | 1:94c648931f84 | 3005 | INIT_BUF(djo); |
Blaze513 | 1:94c648931f84 | 3006 | res = follow_path(&djo, path_old); /* Check old object */ |
Blaze513 | 1:94c648931f84 | 3007 | if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT)) |
Blaze513 | 1:94c648931f84 | 3008 | res = FR_INVALID_NAME; |
Blaze513 | 1:94c648931f84 | 3009 | #if _FS_SHARE |
Blaze513 | 1:94c648931f84 | 3010 | if (res == FR_OK) res = chk_lock(&djo, 2); |
Blaze513 | 1:94c648931f84 | 3011 | #endif |
Blaze513 | 1:94c648931f84 | 3012 | if (res == FR_OK) { /* Old object is found */ |
Blaze513 | 1:94c648931f84 | 3013 | if (!djo.dir) { /* Is root dir? */ |
Blaze513 | 1:94c648931f84 | 3014 | res = FR_NO_FILE; |
Blaze513 | 1:94c648931f84 | 3015 | } else { |
Blaze513 | 1:94c648931f84 | 3016 | mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */ |
Blaze513 | 1:94c648931f84 | 3017 | mem_cpy(&djn, &djo, sizeof(FAT_DIR)); /* Check new object */ |
Blaze513 | 1:94c648931f84 | 3018 | res = follow_path(&djn, path_new); |
Blaze513 | 1:94c648931f84 | 3019 | if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */ |
Blaze513 | 1:94c648931f84 | 3020 | if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */ |
Blaze513 | 1:94c648931f84 | 3021 | /* Start critical section that any interruption or error can cause cross-link */ |
Blaze513 | 1:94c648931f84 | 3022 | res = dir_register(&djn); /* Register the new entry */ |
Blaze513 | 1:94c648931f84 | 3023 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 3024 | dir = djn.dir; /* Copy object information except for name */ |
Blaze513 | 1:94c648931f84 | 3025 | mem_cpy(dir+13, buf+2, 19); |
Blaze513 | 1:94c648931f84 | 3026 | dir[DIR_Attr] = buf[0] | AM_ARC; |
Blaze513 | 1:94c648931f84 | 3027 | djo.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 3028 | if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */ |
Blaze513 | 1:94c648931f84 | 3029 | dw = clust2sect(djn.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO)); |
Blaze513 | 1:94c648931f84 | 3030 | if (!dw) { |
Blaze513 | 1:94c648931f84 | 3031 | res = FR_INT_ERR; |
Blaze513 | 1:94c648931f84 | 3032 | } else { |
Blaze513 | 1:94c648931f84 | 3033 | res = move_window(djn.fs, dw); |
Blaze513 | 1:94c648931f84 | 3034 | dir = djn.fs->win+32; /* .. entry */ |
Blaze513 | 1:94c648931f84 | 3035 | if (res == FR_OK && dir[1] == '.') { |
Blaze513 | 1:94c648931f84 | 3036 | dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust; |
Blaze513 | 1:94c648931f84 | 3037 | ST_WORD(dir+DIR_FstClusLO, dw); |
Blaze513 | 1:94c648931f84 | 3038 | ST_WORD(dir+DIR_FstClusHI, dw >> 16); |
Blaze513 | 1:94c648931f84 | 3039 | djn.fs->wflag = 1; |
Blaze513 | 1:94c648931f84 | 3040 | } |
Blaze513 | 1:94c648931f84 | 3041 | } |
Blaze513 | 1:94c648931f84 | 3042 | } |
Blaze513 | 1:94c648931f84 | 3043 | if (res == FR_OK) { |
Blaze513 | 1:94c648931f84 | 3044 | res = dir_remove(&djo); /* Remove old entry */ |
Blaze513 | 1:94c648931f84 | 3045 | if (res == FR_OK) |
Blaze513 | 1:94c648931f84 | 3046 | res = sync(djo.fs); |
Blaze513 | 1:94c648931f84 | 3047 | } |
Blaze513 | 1:94c648931f84 | 3048 | } |
Blaze513 | 1:94c648931f84 | 3049 | /* End critical section */ |
Blaze513 | 1:94c648931f84 | 3050 | } |
Blaze513 | 1:94c648931f84 | 3051 | } |
Blaze513 | 1:94c648931f84 | 3052 | } |
Blaze513 | 1:94c648931f84 | 3053 | FREE_BUF(); |
Blaze513 | 1:94c648931f84 | 3054 | } |
Blaze513 | 1:94c648931f84 | 3055 | LEAVE_FF(djo.fs, res); |
Blaze513 | 1:94c648931f84 | 3056 | } |
Blaze513 | 1:94c648931f84 | 3057 | |
Blaze513 | 1:94c648931f84 | 3058 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 3059 | #endif /* _FS_MINIMIZE == 0 */ |
Blaze513 | 1:94c648931f84 | 3060 | #endif /* _FS_MINIMIZE <= 1 */ |
Blaze513 | 1:94c648931f84 | 3061 | #endif /* _FS_MINIMIZE <= 2 */ |
Blaze513 | 1:94c648931f84 | 3062 | |
Blaze513 | 1:94c648931f84 | 3063 | |
Blaze513 | 1:94c648931f84 | 3064 | |
Blaze513 | 1:94c648931f84 | 3065 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3066 | /* Forward data to the stream directly (available on only tiny cfg) */ |
Blaze513 | 1:94c648931f84 | 3067 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3068 | #if _USE_FORWARD && _FS_TINY |
Blaze513 | 1:94c648931f84 | 3069 | |
Blaze513 | 1:94c648931f84 | 3070 | FRESULT f_forward ( |
Blaze513 | 1:94c648931f84 | 3071 | FAT_FIL *fp, /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 3072 | UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ |
Blaze513 | 1:94c648931f84 | 3073 | UINT btr, /* Number of bytes to forward */ |
Blaze513 | 1:94c648931f84 | 3074 | UINT *bf /* Pointer to number of bytes forwarded */ |
Blaze513 | 1:94c648931f84 | 3075 | ) |
Blaze513 | 1:94c648931f84 | 3076 | { |
Blaze513 | 1:94c648931f84 | 3077 | FRESULT res; |
Blaze513 | 1:94c648931f84 | 3078 | DWORD remain, clst, sect; |
Blaze513 | 1:94c648931f84 | 3079 | UINT rcnt; |
Blaze513 | 1:94c648931f84 | 3080 | BYTE csect; |
Blaze513 | 1:94c648931f84 | 3081 | |
Blaze513 | 1:94c648931f84 | 3082 | |
Blaze513 | 1:94c648931f84 | 3083 | *bf = 0; /* Initialize byte counter */ |
Blaze513 | 1:94c648931f84 | 3084 | |
Blaze513 | 1:94c648931f84 | 3085 | res = validate(fp->fs, fp->id); /* Check validity of the object */ |
Blaze513 | 1:94c648931f84 | 3086 | if (res != FR_OK) LEAVE_FF(fp->fs, res); |
Blaze513 | 1:94c648931f84 | 3087 | if (fp->flag & FA__ERROR) /* Check error flag */ |
Blaze513 | 1:94c648931f84 | 3088 | LEAVE_FF(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 3089 | if (!(fp->flag & FA_READ)) /* Check access mode */ |
Blaze513 | 1:94c648931f84 | 3090 | LEAVE_FF(fp->fs, FR_DENIED); |
Blaze513 | 1:94c648931f84 | 3091 | |
Blaze513 | 1:94c648931f84 | 3092 | remain = fp->fsize - fp->fptr; |
Blaze513 | 1:94c648931f84 | 3093 | if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ |
Blaze513 | 1:94c648931f84 | 3094 | |
Blaze513 | 1:94c648931f84 | 3095 | for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */ |
Blaze513 | 1:94c648931f84 | 3096 | fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) { |
Blaze513 | 1:94c648931f84 | 3097 | csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ |
Blaze513 | 1:94c648931f84 | 3098 | if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ |
Blaze513 | 1:94c648931f84 | 3099 | if (!csect) { /* On the cluster boundary? */ |
Blaze513 | 1:94c648931f84 | 3100 | clst = (fp->fptr == 0) ? /* On the top of the file? */ |
Blaze513 | 1:94c648931f84 | 3101 | fp->org_clust : get_fat(fp->fs, fp->curr_clust); |
Blaze513 | 1:94c648931f84 | 3102 | if (clst <= 1) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 3103 | if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 3104 | fp->curr_clust = clst; /* Update current cluster */ |
Blaze513 | 1:94c648931f84 | 3105 | } |
Blaze513 | 1:94c648931f84 | 3106 | } |
Blaze513 | 1:94c648931f84 | 3107 | sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */ |
Blaze513 | 1:94c648931f84 | 3108 | if (!sect) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 3109 | sect += csect; |
Blaze513 | 1:94c648931f84 | 3110 | if (move_window(fp->fs, sect)) /* Move sector window */ |
Blaze513 | 1:94c648931f84 | 3111 | ABORT(fp->fs, FR_DISK_ERR); |
Blaze513 | 1:94c648931f84 | 3112 | fp->dsect = sect; |
Blaze513 | 1:94c648931f84 | 3113 | rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */ |
Blaze513 | 1:94c648931f84 | 3114 | if (rcnt > btr) rcnt = btr; |
Blaze513 | 1:94c648931f84 | 3115 | rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt); |
Blaze513 | 1:94c648931f84 | 3116 | if (!rcnt) ABORT(fp->fs, FR_INT_ERR); |
Blaze513 | 1:94c648931f84 | 3117 | } |
Blaze513 | 1:94c648931f84 | 3118 | |
Blaze513 | 1:94c648931f84 | 3119 | LEAVE_FF(fp->fs, FR_OK); |
Blaze513 | 1:94c648931f84 | 3120 | } |
Blaze513 | 1:94c648931f84 | 3121 | #endif /* _USE_FORWARD */ |
Blaze513 | 1:94c648931f84 | 3122 | |
Blaze513 | 1:94c648931f84 | 3123 | |
Blaze513 | 1:94c648931f84 | 3124 | |
Blaze513 | 1:94c648931f84 | 3125 | #if _USE_MKFS && !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 3126 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3127 | /* Create File System on the Drive */ |
Blaze513 | 1:94c648931f84 | 3128 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3129 | #define N_ROOTDIR 512 /* Multiple of 32 */ |
Blaze513 | 1:94c648931f84 | 3130 | #define N_FATS 1 /* 1 or 2 */ |
Blaze513 | 1:94c648931f84 | 3131 | |
Blaze513 | 1:94c648931f84 | 3132 | |
Blaze513 | 1:94c648931f84 | 3133 | FRESULT f_mkfs ( |
Blaze513 | 1:94c648931f84 | 3134 | BYTE drv, /* Logical drive number */ |
Blaze513 | 1:94c648931f84 | 3135 | BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */ |
Blaze513 | 1:94c648931f84 | 3136 | UINT au /* Allocation unit size [bytes] */ |
Blaze513 | 1:94c648931f84 | 3137 | ) |
Blaze513 | 1:94c648931f84 | 3138 | { |
Blaze513 | 1:94c648931f84 | 3139 | static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0}; |
Blaze513 | 1:94c648931f84 | 3140 | static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512}; |
Blaze513 | 1:94c648931f84 | 3141 | BYTE fmt, md, *tbl; |
Blaze513 | 1:94c648931f84 | 3142 | DWORD n_clst, vs, n; |
Blaze513 | 1:94c648931f84 | 3143 | UINT as, i; |
Blaze513 | 1:94c648931f84 | 3144 | DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */ |
Blaze513 | 1:94c648931f84 | 3145 | DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */ |
Blaze513 | 1:94c648931f84 | 3146 | FATFS *fs; |
Blaze513 | 1:94c648931f84 | 3147 | DSTATUS stat; |
Blaze513 | 1:94c648931f84 | 3148 | |
Blaze513 | 1:94c648931f84 | 3149 | |
Blaze513 | 1:94c648931f84 | 3150 | /* Check mounted drive and clear work area */ |
Blaze513 | 1:94c648931f84 | 3151 | if (drv >= _DRIVES) return FR_INVALID_DRIVE; |
Blaze513 | 1:94c648931f84 | 3152 | fs = FatFs[drv]; |
Blaze513 | 1:94c648931f84 | 3153 | if (!fs) return FR_NOT_ENABLED; |
Blaze513 | 1:94c648931f84 | 3154 | fs->fs_type = 0; |
Blaze513 | 1:94c648931f84 | 3155 | drv = LD2PD(drv); |
Blaze513 | 1:94c648931f84 | 3156 | |
Blaze513 | 1:94c648931f84 | 3157 | /* Get disk statics */ |
Blaze513 | 1:94c648931f84 | 3158 | stat = disk_initialize(drv); |
Blaze513 | 1:94c648931f84 | 3159 | if (stat & STA_NOINIT) return FR_NOT_READY; |
Blaze513 | 1:94c648931f84 | 3160 | if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; |
Blaze513 | 1:94c648931f84 | 3161 | #if _MAX_SS != 512 /* Get disk sector size */ |
Blaze513 | 1:94c648931f84 | 3162 | if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS) |
Blaze513 | 1:94c648931f84 | 3163 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3164 | #endif |
Blaze513 | 1:94c648931f84 | 3165 | if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128) |
Blaze513 | 1:94c648931f84 | 3166 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3167 | b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */ |
Blaze513 | 1:94c648931f84 | 3168 | n_vol -= b_vol; |
Blaze513 | 1:94c648931f84 | 3169 | if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */ |
Blaze513 | 1:94c648931f84 | 3170 | if (!au) { /* AU auto selection */ |
Blaze513 | 1:94c648931f84 | 3171 | vs = n_vol / (2000 / (SS(fs) / 512)); |
Blaze513 | 1:94c648931f84 | 3172 | for (i = 0; vs < vst[i]; i++) ; |
Blaze513 | 1:94c648931f84 | 3173 | au = cst[i]; |
Blaze513 | 1:94c648931f84 | 3174 | } |
Blaze513 | 1:94c648931f84 | 3175 | if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs); |
Blaze513 | 1:94c648931f84 | 3176 | au /= SS(fs); /* Number of sectors per cluster */ |
Blaze513 | 1:94c648931f84 | 3177 | if (au == 0) au = 1; |
Blaze513 | 1:94c648931f84 | 3178 | if (au > 128) au = 128; |
Blaze513 | 1:94c648931f84 | 3179 | |
Blaze513 | 1:94c648931f84 | 3180 | /* Pre-compute number of clusters and FAT syb-type */ |
Blaze513 | 1:94c648931f84 | 3181 | n_clst = n_vol / au; |
Blaze513 | 1:94c648931f84 | 3182 | fmt = FS_FAT12; |
Blaze513 | 1:94c648931f84 | 3183 | if (n_clst >= MIN_FAT16) fmt = FS_FAT16; |
Blaze513 | 1:94c648931f84 | 3184 | if (n_clst >= MIN_FAT32) fmt = FS_FAT32; |
Blaze513 | 1:94c648931f84 | 3185 | |
Blaze513 | 1:94c648931f84 | 3186 | /* Determine offset and size of FAT structure */ |
Blaze513 | 1:94c648931f84 | 3187 | if (fmt == FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 3188 | n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs); |
Blaze513 | 1:94c648931f84 | 3189 | n_rsv = 32; |
Blaze513 | 1:94c648931f84 | 3190 | n_dir = 0; |
Blaze513 | 1:94c648931f84 | 3191 | } else { |
Blaze513 | 1:94c648931f84 | 3192 | n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4; |
Blaze513 | 1:94c648931f84 | 3193 | n_fat = (n_fat + SS(fs) - 1) / SS(fs); |
Blaze513 | 1:94c648931f84 | 3194 | n_rsv = 1; |
Blaze513 | 1:94c648931f84 | 3195 | n_dir = N_ROOTDIR * 32UL / SS(fs); |
Blaze513 | 1:94c648931f84 | 3196 | } |
Blaze513 | 1:94c648931f84 | 3197 | b_fat = b_vol + n_rsv; /* FAT area start sector */ |
Blaze513 | 1:94c648931f84 | 3198 | b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */ |
Blaze513 | 1:94c648931f84 | 3199 | b_data = b_dir + n_dir; /* Data area start sector */ |
Blaze513 | 1:94c648931f84 | 3200 | if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */ |
Blaze513 | 1:94c648931f84 | 3201 | |
Blaze513 | 1:94c648931f84 | 3202 | /* Align data start sector to erase block boundary (for flash memory media) */ |
Blaze513 | 1:94c648931f84 | 3203 | if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3204 | if (!n || n > 32768) return FR_MKFS_ABORTED; |
Blaze513 | 1:94c648931f84 | 3205 | n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */ |
Blaze513 | 1:94c648931f84 | 3206 | n = (n - b_data) / N_FATS; |
Blaze513 | 1:94c648931f84 | 3207 | if (fmt == FS_FAT32) { /* FAT32: Move FAT start */ |
Blaze513 | 1:94c648931f84 | 3208 | n_rsv += n; |
Blaze513 | 1:94c648931f84 | 3209 | b_fat += n; |
Blaze513 | 1:94c648931f84 | 3210 | } else { /* FAT12/16: Expand FAT size */ |
Blaze513 | 1:94c648931f84 | 3211 | n_fat += n; |
Blaze513 | 1:94c648931f84 | 3212 | } |
Blaze513 | 1:94c648931f84 | 3213 | /* b_dir and b_data are no longer used below */ |
Blaze513 | 1:94c648931f84 | 3214 | |
Blaze513 | 1:94c648931f84 | 3215 | /* Determine number of cluster and final check of validity of the FAT sub-type */ |
Blaze513 | 1:94c648931f84 | 3216 | n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au; |
Blaze513 | 1:94c648931f84 | 3217 | if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16) |
Blaze513 | 1:94c648931f84 | 3218 | || (fmt == FS_FAT32 && n_clst < MIN_FAT32)) |
Blaze513 | 1:94c648931f84 | 3219 | return FR_MKFS_ABORTED; |
Blaze513 | 1:94c648931f84 | 3220 | |
Blaze513 | 1:94c648931f84 | 3221 | /* Create partition table if required */ |
Blaze513 | 1:94c648931f84 | 3222 | if (sfd == 1) { |
Blaze513 | 1:94c648931f84 | 3223 | md = 0xF0; |
Blaze513 | 1:94c648931f84 | 3224 | } else { |
Blaze513 | 1:94c648931f84 | 3225 | DWORD n_disk = b_vol + n_vol; |
Blaze513 | 1:94c648931f84 | 3226 | |
Blaze513 | 1:94c648931f84 | 3227 | mem_set(fs->win, 0, SS(fs)); |
Blaze513 | 1:94c648931f84 | 3228 | tbl = fs->win+MBR_Table; |
Blaze513 | 1:94c648931f84 | 3229 | ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */ |
Blaze513 | 1:94c648931f84 | 3230 | if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */ |
Blaze513 | 1:94c648931f84 | 3231 | n_disk = n_disk / 63 / 255; |
Blaze513 | 1:94c648931f84 | 3232 | tbl[7] = (BYTE)n_disk; |
Blaze513 | 1:94c648931f84 | 3233 | tbl[6] = (BYTE)((n_disk >> 2) | 63); |
Blaze513 | 1:94c648931f84 | 3234 | } else { |
Blaze513 | 1:94c648931f84 | 3235 | ST_WORD(&tbl[6], 0xFFFF); |
Blaze513 | 1:94c648931f84 | 3236 | } |
Blaze513 | 1:94c648931f84 | 3237 | tbl[5] = 254; |
Blaze513 | 1:94c648931f84 | 3238 | if (fmt != FS_FAT32) /* System ID */ |
Blaze513 | 1:94c648931f84 | 3239 | tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06; |
Blaze513 | 1:94c648931f84 | 3240 | else |
Blaze513 | 1:94c648931f84 | 3241 | tbl[4] = 0x0c; |
Blaze513 | 1:94c648931f84 | 3242 | ST_DWORD(tbl+8, 63); /* Partition start in LBA */ |
Blaze513 | 1:94c648931f84 | 3243 | ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */ |
Blaze513 | 1:94c648931f84 | 3244 | ST_WORD(tbl+64, 0xAA55); /* Signature */ |
Blaze513 | 1:94c648931f84 | 3245 | if (disk_write(drv, fs->win, 0, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 3246 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3247 | md = 0xF8; |
Blaze513 | 1:94c648931f84 | 3248 | } |
Blaze513 | 1:94c648931f84 | 3249 | |
Blaze513 | 1:94c648931f84 | 3250 | /* Create VBR */ |
Blaze513 | 1:94c648931f84 | 3251 | tbl = fs->win; /* Clear buffer */ |
Blaze513 | 1:94c648931f84 | 3252 | mem_set(tbl, 0, SS(fs)); |
Blaze513 | 1:94c648931f84 | 3253 | ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */ |
Blaze513 | 1:94c648931f84 | 3254 | as = SS(fs); /* Sector size */ |
Blaze513 | 1:94c648931f84 | 3255 | ST_WORD(tbl+BPB_BytsPerSec, as); |
Blaze513 | 1:94c648931f84 | 3256 | tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */ |
Blaze513 | 1:94c648931f84 | 3257 | ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */ |
Blaze513 | 1:94c648931f84 | 3258 | tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */ |
Blaze513 | 1:94c648931f84 | 3259 | as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */ |
Blaze513 | 1:94c648931f84 | 3260 | ST_WORD(tbl+BPB_RootEntCnt, as); |
Blaze513 | 1:94c648931f84 | 3261 | if (n_vol < 0x10000) { /* Number of total sectors */ |
Blaze513 | 1:94c648931f84 | 3262 | ST_WORD(tbl+BPB_TotSec16, n_vol); |
Blaze513 | 1:94c648931f84 | 3263 | } else { |
Blaze513 | 1:94c648931f84 | 3264 | ST_DWORD(tbl+BPB_TotSec32, n_vol); |
Blaze513 | 1:94c648931f84 | 3265 | } |
Blaze513 | 1:94c648931f84 | 3266 | tbl[BPB_Media] = md; /* Media descriptor */ |
Blaze513 | 1:94c648931f84 | 3267 | ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */ |
Blaze513 | 1:94c648931f84 | 3268 | ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */ |
Blaze513 | 1:94c648931f84 | 3269 | ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */ |
Blaze513 | 1:94c648931f84 | 3270 | n = get_fattime(); /* Use current time as VSN */ |
Blaze513 | 1:94c648931f84 | 3271 | if (fmt == FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 3272 | ST_DWORD(tbl+BS_VolID32, n); /* VSN */ |
Blaze513 | 1:94c648931f84 | 3273 | ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */ |
Blaze513 | 1:94c648931f84 | 3274 | ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */ |
Blaze513 | 1:94c648931f84 | 3275 | ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */ |
Blaze513 | 1:94c648931f84 | 3276 | ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */ |
Blaze513 | 1:94c648931f84 | 3277 | tbl[BS_DrvNum32] = 0x80; /* Drive number */ |
Blaze513 | 1:94c648931f84 | 3278 | tbl[BS_BootSig32] = 0x29; /* Extended boot signature */ |
Blaze513 | 1:94c648931f84 | 3279 | mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume label, FAT signature */ |
Blaze513 | 1:94c648931f84 | 3280 | } else { |
Blaze513 | 1:94c648931f84 | 3281 | ST_DWORD(tbl+BS_VolID, n); /* VSN */ |
Blaze513 | 1:94c648931f84 | 3282 | ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */ |
Blaze513 | 1:94c648931f84 | 3283 | tbl[BS_DrvNum] = 0x80; /* Drive number */ |
Blaze513 | 1:94c648931f84 | 3284 | tbl[BS_BootSig] = 0x29; /* Extended boot signature */ |
Blaze513 | 1:94c648931f84 | 3285 | mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume label, FAT signature */ |
Blaze513 | 1:94c648931f84 | 3286 | } |
Blaze513 | 1:94c648931f84 | 3287 | ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */ |
Blaze513 | 1:94c648931f84 | 3288 | if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */ |
Blaze513 | 1:94c648931f84 | 3289 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3290 | if (fmt == FS_FAT32) /* Backup (VBR+6) */ |
Blaze513 | 1:94c648931f84 | 3291 | disk_write(drv, tbl, b_vol + 6, 1); |
Blaze513 | 1:94c648931f84 | 3292 | |
Blaze513 | 1:94c648931f84 | 3293 | /* Initialize FAT area */ |
Blaze513 | 1:94c648931f84 | 3294 | for (i = 0; i < N_FATS; i++) { |
Blaze513 | 1:94c648931f84 | 3295 | mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */ |
Blaze513 | 1:94c648931f84 | 3296 | n = md; /* Media descriptor byte */ |
Blaze513 | 1:94c648931f84 | 3297 | if (fmt != FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 3298 | n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00; |
Blaze513 | 1:94c648931f84 | 3299 | ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */ |
Blaze513 | 1:94c648931f84 | 3300 | } else { |
Blaze513 | 1:94c648931f84 | 3301 | n |= 0x0FFFFF00; |
Blaze513 | 1:94c648931f84 | 3302 | ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */ |
Blaze513 | 1:94c648931f84 | 3303 | ST_DWORD(tbl+4, 0x0FFFFFFF); |
Blaze513 | 1:94c648931f84 | 3304 | ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */ |
Blaze513 | 1:94c648931f84 | 3305 | } |
Blaze513 | 1:94c648931f84 | 3306 | if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 3307 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3308 | mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */ |
Blaze513 | 1:94c648931f84 | 3309 | for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */ |
Blaze513 | 1:94c648931f84 | 3310 | if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 3311 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3312 | } |
Blaze513 | 1:94c648931f84 | 3313 | } |
Blaze513 | 1:94c648931f84 | 3314 | |
Blaze513 | 1:94c648931f84 | 3315 | /* Initialize root directory */ |
Blaze513 | 1:94c648931f84 | 3316 | n = (fmt == FS_FAT32) ? as : n_dir; |
Blaze513 | 1:94c648931f84 | 3317 | while (n--) { |
Blaze513 | 1:94c648931f84 | 3318 | if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) |
Blaze513 | 1:94c648931f84 | 3319 | return FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3320 | } |
Blaze513 | 1:94c648931f84 | 3321 | |
Blaze513 | 1:94c648931f84 | 3322 | /* Create FSInfo record if needed */ |
Blaze513 | 1:94c648931f84 | 3323 | if (fmt == FS_FAT32) { |
Blaze513 | 1:94c648931f84 | 3324 | ST_WORD(tbl+BS_55AA, 0xAA55); |
Blaze513 | 1:94c648931f84 | 3325 | ST_DWORD(tbl+FSI_LeadSig, 0x41615252); |
Blaze513 | 1:94c648931f84 | 3326 | ST_DWORD(tbl+FSI_StrucSig, 0x61417272); |
Blaze513 | 1:94c648931f84 | 3327 | ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); |
Blaze513 | 1:94c648931f84 | 3328 | ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF); |
Blaze513 | 1:94c648931f84 | 3329 | disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */ |
Blaze513 | 1:94c648931f84 | 3330 | disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */ |
Blaze513 | 1:94c648931f84 | 3331 | } |
Blaze513 | 1:94c648931f84 | 3332 | |
Blaze513 | 1:94c648931f84 | 3333 | return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR; |
Blaze513 | 1:94c648931f84 | 3334 | } |
Blaze513 | 1:94c648931f84 | 3335 | |
Blaze513 | 1:94c648931f84 | 3336 | #endif /* _USE_MKFS && !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 3337 | |
Blaze513 | 1:94c648931f84 | 3338 | |
Blaze513 | 1:94c648931f84 | 3339 | |
Blaze513 | 1:94c648931f84 | 3340 | |
Blaze513 | 1:94c648931f84 | 3341 | #if _USE_STRFUNC |
Blaze513 | 1:94c648931f84 | 3342 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3343 | /* Get a string from the file */ |
Blaze513 | 1:94c648931f84 | 3344 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3345 | TCHAR* f_gets ( |
Blaze513 | 1:94c648931f84 | 3346 | TCHAR* buff, /* Pointer to the string buffer to read */ |
Blaze513 | 1:94c648931f84 | 3347 | int len, /* Size of string buffer (characters) */ |
Blaze513 | 1:94c648931f84 | 3348 | FAT_FIL* fil /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 3349 | ) |
Blaze513 | 1:94c648931f84 | 3350 | { |
Blaze513 | 1:94c648931f84 | 3351 | int n = 0; |
Blaze513 | 1:94c648931f84 | 3352 | TCHAR c, *p = buff; |
Blaze513 | 1:94c648931f84 | 3353 | BYTE s[2]; |
Blaze513 | 1:94c648931f84 | 3354 | UINT rc; |
Blaze513 | 1:94c648931f84 | 3355 | |
Blaze513 | 1:94c648931f84 | 3356 | |
Blaze513 | 1:94c648931f84 | 3357 | while (n < len - 1) { /* Read bytes until buffer gets filled */ |
Blaze513 | 1:94c648931f84 | 3358 | f_read(fil, s, 1, &rc); |
Blaze513 | 1:94c648931f84 | 3359 | if (rc != 1) break; /* Break on EOF or error */ |
Blaze513 | 1:94c648931f84 | 3360 | c = s[0]; |
Blaze513 | 1:94c648931f84 | 3361 | #if _LFN_UNICODE /* Read a character in UTF-8 encoding */ |
Blaze513 | 1:94c648931f84 | 3362 | if (c >= 0x80) { |
Blaze513 | 1:94c648931f84 | 3363 | if (c < 0xC0) continue; /* Skip stray trailer */ |
Blaze513 | 1:94c648931f84 | 3364 | if (c < 0xE0) { /* Two-byte sequense */ |
Blaze513 | 1:94c648931f84 | 3365 | f_read(fil, s, 1, &rc); |
Blaze513 | 1:94c648931f84 | 3366 | if (rc != 1) break; |
Blaze513 | 1:94c648931f84 | 3367 | c = ((c & 0x1F) << 6) | (s[0] & 0x3F); |
Blaze513 | 1:94c648931f84 | 3368 | if (c < 0x80) c = '?'; |
Blaze513 | 1:94c648931f84 | 3369 | } else { |
Blaze513 | 1:94c648931f84 | 3370 | if (c < 0xF0) { /* Three-byte sequense */ |
Blaze513 | 1:94c648931f84 | 3371 | f_read(fil, s, 2, &rc); |
Blaze513 | 1:94c648931f84 | 3372 | if (rc != 2) break; |
Blaze513 | 1:94c648931f84 | 3373 | c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F); |
Blaze513 | 1:94c648931f84 | 3374 | if (c < 0x800) c = '?'; |
Blaze513 | 1:94c648931f84 | 3375 | } else { /* Reject four-byte sequense */ |
Blaze513 | 1:94c648931f84 | 3376 | c = '?'; |
Blaze513 | 1:94c648931f84 | 3377 | } |
Blaze513 | 1:94c648931f84 | 3378 | } |
Blaze513 | 1:94c648931f84 | 3379 | } |
Blaze513 | 1:94c648931f84 | 3380 | #endif |
Blaze513 | 1:94c648931f84 | 3381 | #if _USE_STRFUNC >= 2 |
Blaze513 | 1:94c648931f84 | 3382 | if (c == '\r') continue; /* Strip '\r' */ |
Blaze513 | 1:94c648931f84 | 3383 | #endif |
Blaze513 | 1:94c648931f84 | 3384 | *p++ = c; |
Blaze513 | 1:94c648931f84 | 3385 | n++; |
Blaze513 | 1:94c648931f84 | 3386 | if (c == '\n') break; /* Break on EOL */ |
Blaze513 | 1:94c648931f84 | 3387 | } |
Blaze513 | 1:94c648931f84 | 3388 | *p = 0; |
Blaze513 | 1:94c648931f84 | 3389 | return n ? buff : 0; /* When no data read (eof or error), return with error. */ |
Blaze513 | 1:94c648931f84 | 3390 | } |
Blaze513 | 1:94c648931f84 | 3391 | |
Blaze513 | 1:94c648931f84 | 3392 | |
Blaze513 | 1:94c648931f84 | 3393 | |
Blaze513 | 1:94c648931f84 | 3394 | #if !_FS_READONLY |
Blaze513 | 1:94c648931f84 | 3395 | #include <stdarg.h> |
Blaze513 | 1:94c648931f84 | 3396 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3397 | /* Put a character to the file */ |
Blaze513 | 1:94c648931f84 | 3398 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3399 | int f_putc ( |
Blaze513 | 1:94c648931f84 | 3400 | TCHAR c, /* A character to be output */ |
Blaze513 | 1:94c648931f84 | 3401 | FAT_FIL* fil /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 3402 | ) |
Blaze513 | 1:94c648931f84 | 3403 | { |
Blaze513 | 1:94c648931f84 | 3404 | UINT bw, btw; |
Blaze513 | 1:94c648931f84 | 3405 | BYTE s[3]; |
Blaze513 | 1:94c648931f84 | 3406 | |
Blaze513 | 1:94c648931f84 | 3407 | |
Blaze513 | 1:94c648931f84 | 3408 | #if _USE_STRFUNC >= 2 |
Blaze513 | 1:94c648931f84 | 3409 | if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */ |
Blaze513 | 1:94c648931f84 | 3410 | #endif |
Blaze513 | 1:94c648931f84 | 3411 | |
Blaze513 | 1:94c648931f84 | 3412 | #if _LFN_UNICODE /* Write the character in UTF-8 encoding */ |
Blaze513 | 1:94c648931f84 | 3413 | if (c < 0x80) { /* 7-bit */ |
Blaze513 | 1:94c648931f84 | 3414 | s[0] = (BYTE)c; |
Blaze513 | 1:94c648931f84 | 3415 | btw = 1; |
Blaze513 | 1:94c648931f84 | 3416 | } else { |
Blaze513 | 1:94c648931f84 | 3417 | if (c < 0x800) { /* 11-bit */ |
Blaze513 | 1:94c648931f84 | 3418 | s[0] = (BYTE)(0xC0 | (c >> 6)); |
Blaze513 | 1:94c648931f84 | 3419 | s[1] = (BYTE)(0x80 | (c & 0x3F)); |
Blaze513 | 1:94c648931f84 | 3420 | btw = 2; |
Blaze513 | 1:94c648931f84 | 3421 | } else { /* 16-bit */ |
Blaze513 | 1:94c648931f84 | 3422 | s[0] = (BYTE)(0xE0 | (c >> 12)); |
Blaze513 | 1:94c648931f84 | 3423 | s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F)); |
Blaze513 | 1:94c648931f84 | 3424 | s[2] = (BYTE)(0x80 | (c & 0x3F)); |
Blaze513 | 1:94c648931f84 | 3425 | btw = 3; |
Blaze513 | 1:94c648931f84 | 3426 | } |
Blaze513 | 1:94c648931f84 | 3427 | } |
Blaze513 | 1:94c648931f84 | 3428 | #else /* Write the character without conversion */ |
Blaze513 | 1:94c648931f84 | 3429 | s[0] = (BYTE)c; |
Blaze513 | 1:94c648931f84 | 3430 | btw = 1; |
Blaze513 | 1:94c648931f84 | 3431 | #endif |
Blaze513 | 1:94c648931f84 | 3432 | f_write(fil, s, btw, &bw); /* Write the char to the file */ |
Blaze513 | 1:94c648931f84 | 3433 | return (bw == btw) ? 1 : EOF; /* Return the result */ |
Blaze513 | 1:94c648931f84 | 3434 | } |
Blaze513 | 1:94c648931f84 | 3435 | |
Blaze513 | 1:94c648931f84 | 3436 | |
Blaze513 | 1:94c648931f84 | 3437 | |
Blaze513 | 1:94c648931f84 | 3438 | |
Blaze513 | 1:94c648931f84 | 3439 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3440 | /* Put a string to the file */ |
Blaze513 | 1:94c648931f84 | 3441 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3442 | int f_puts ( |
Blaze513 | 1:94c648931f84 | 3443 | const TCHAR* str, /* Pointer to the string to be output */ |
Blaze513 | 1:94c648931f84 | 3444 | FAT_FIL* fil /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 3445 | ) |
Blaze513 | 1:94c648931f84 | 3446 | { |
Blaze513 | 1:94c648931f84 | 3447 | int n; |
Blaze513 | 1:94c648931f84 | 3448 | |
Blaze513 | 1:94c648931f84 | 3449 | |
Blaze513 | 1:94c648931f84 | 3450 | for (n = 0; *str; str++, n++) { |
Blaze513 | 1:94c648931f84 | 3451 | if (f_putc(*str, fil) == EOF) return EOF; |
Blaze513 | 1:94c648931f84 | 3452 | } |
Blaze513 | 1:94c648931f84 | 3453 | return n; |
Blaze513 | 1:94c648931f84 | 3454 | } |
Blaze513 | 1:94c648931f84 | 3455 | |
Blaze513 | 1:94c648931f84 | 3456 | |
Blaze513 | 1:94c648931f84 | 3457 | |
Blaze513 | 1:94c648931f84 | 3458 | |
Blaze513 | 1:94c648931f84 | 3459 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3460 | /* Put a formatted string to the file */ |
Blaze513 | 1:94c648931f84 | 3461 | /*-----------------------------------------------------------------------*/ |
Blaze513 | 1:94c648931f84 | 3462 | int f_printf ( |
Blaze513 | 1:94c648931f84 | 3463 | FAT_FIL* fil, /* Pointer to the file object */ |
Blaze513 | 1:94c648931f84 | 3464 | const TCHAR* str, /* Pointer to the format string */ |
Blaze513 | 1:94c648931f84 | 3465 | ... /* Optional arguments... */ |
Blaze513 | 1:94c648931f84 | 3466 | ) |
Blaze513 | 1:94c648931f84 | 3467 | { |
Blaze513 | 1:94c648931f84 | 3468 | va_list arp; |
Blaze513 | 1:94c648931f84 | 3469 | BYTE f, r; |
Blaze513 | 1:94c648931f84 | 3470 | UINT i, w; |
Blaze513 | 1:94c648931f84 | 3471 | ULONG val; |
Blaze513 | 1:94c648931f84 | 3472 | TCHAR c, d, s[16]; |
Blaze513 | 1:94c648931f84 | 3473 | int res, cc; |
Blaze513 | 1:94c648931f84 | 3474 | |
Blaze513 | 1:94c648931f84 | 3475 | |
Blaze513 | 1:94c648931f84 | 3476 | va_start(arp, str); |
Blaze513 | 1:94c648931f84 | 3477 | |
Blaze513 | 1:94c648931f84 | 3478 | for (cc = res = 0; cc != EOF; res += cc) { |
Blaze513 | 1:94c648931f84 | 3479 | c = *str++; |
Blaze513 | 1:94c648931f84 | 3480 | if (c == 0) break; /* End of string */ |
Blaze513 | 1:94c648931f84 | 3481 | if (c != '%') { /* Non escape character */ |
Blaze513 | 1:94c648931f84 | 3482 | cc = f_putc(c, fil); |
Blaze513 | 1:94c648931f84 | 3483 | if (cc != EOF) cc = 1; |
Blaze513 | 1:94c648931f84 | 3484 | continue; |
Blaze513 | 1:94c648931f84 | 3485 | } |
Blaze513 | 1:94c648931f84 | 3486 | w = f = 0; |
Blaze513 | 1:94c648931f84 | 3487 | c = *str++; |
Blaze513 | 1:94c648931f84 | 3488 | if (c == '0') { /* Flag: '0' padding */ |
Blaze513 | 1:94c648931f84 | 3489 | f = 1; c = *str++; |
Blaze513 | 1:94c648931f84 | 3490 | } |
Blaze513 | 1:94c648931f84 | 3491 | while (IsDigit(c)) { /* Precision */ |
Blaze513 | 1:94c648931f84 | 3492 | w = w * 10 + c - '0'; |
Blaze513 | 1:94c648931f84 | 3493 | c = *str++; |
Blaze513 | 1:94c648931f84 | 3494 | } |
Blaze513 | 1:94c648931f84 | 3495 | if (c == 'l' || c == 'L') { /* Prefix: Size is long int */ |
Blaze513 | 1:94c648931f84 | 3496 | f |= 2; c = *str++; |
Blaze513 | 1:94c648931f84 | 3497 | } |
Blaze513 | 1:94c648931f84 | 3498 | if (!c) break; |
Blaze513 | 1:94c648931f84 | 3499 | d = c; |
Blaze513 | 1:94c648931f84 | 3500 | if (IsLower(d)) d -= 0x20; |
Blaze513 | 1:94c648931f84 | 3501 | switch (d) { /* Type is... */ |
Blaze513 | 1:94c648931f84 | 3502 | case 'S' : /* String */ |
Blaze513 | 1:94c648931f84 | 3503 | cc = f_puts(va_arg(arp, TCHAR*), fil); continue; |
Blaze513 | 1:94c648931f84 | 3504 | case 'C' : /* Character */ |
Blaze513 | 1:94c648931f84 | 3505 | cc = f_putc((TCHAR)va_arg(arp, int), fil); continue; |
Blaze513 | 1:94c648931f84 | 3506 | case 'B' : /* Binary */ |
Blaze513 | 1:94c648931f84 | 3507 | r = 2; break; |
Blaze513 | 1:94c648931f84 | 3508 | case 'O' : /* Octal */ |
Blaze513 | 1:94c648931f84 | 3509 | r = 8; break; |
Blaze513 | 1:94c648931f84 | 3510 | case 'D' : /* Signed decimal */ |
Blaze513 | 1:94c648931f84 | 3511 | case 'U' : /* Unsigned decimal */ |
Blaze513 | 1:94c648931f84 | 3512 | r = 10; break; |
Blaze513 | 1:94c648931f84 | 3513 | case 'X' : /* Hexdecimal */ |
Blaze513 | 1:94c648931f84 | 3514 | r = 16; break; |
Blaze513 | 1:94c648931f84 | 3515 | default: /* Unknown */ |
Blaze513 | 1:94c648931f84 | 3516 | cc = f_putc(c, fil); continue; |
Blaze513 | 1:94c648931f84 | 3517 | } |
Blaze513 | 1:94c648931f84 | 3518 | |
Blaze513 | 1:94c648931f84 | 3519 | /* Get an argument */ |
Blaze513 | 1:94c648931f84 | 3520 | val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int)); |
Blaze513 | 1:94c648931f84 | 3521 | if (d == 'D' && (val & 0x80000000)) { |
Blaze513 | 1:94c648931f84 | 3522 | val = 0 - val; |
Blaze513 | 1:94c648931f84 | 3523 | f |= 4; |
Blaze513 | 1:94c648931f84 | 3524 | } |
Blaze513 | 1:94c648931f84 | 3525 | /* Put it in numeral string */ |
Blaze513 | 1:94c648931f84 | 3526 | i = 0; |
Blaze513 | 1:94c648931f84 | 3527 | do { |
Blaze513 | 1:94c648931f84 | 3528 | d = (TCHAR)(val % r); val /= r; |
Blaze513 | 1:94c648931f84 | 3529 | if (d > 9) { |
Blaze513 | 1:94c648931f84 | 3530 | d += 7; |
Blaze513 | 1:94c648931f84 | 3531 | if (c == 'x') d += 0x20; |
Blaze513 | 1:94c648931f84 | 3532 | } |
Blaze513 | 1:94c648931f84 | 3533 | s[i++] = d + '0'; |
Blaze513 | 1:94c648931f84 | 3534 | } while (val && i < sizeof(s) / sizeof(s[0])); |
Blaze513 | 1:94c648931f84 | 3535 | if (f & 4) s[i++] = '-'; |
Blaze513 | 1:94c648931f84 | 3536 | cc = 0; |
Blaze513 | 1:94c648931f84 | 3537 | while (i < w-- && cc != EOF) { |
Blaze513 | 1:94c648931f84 | 3538 | cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil); |
Blaze513 | 1:94c648931f84 | 3539 | res++; |
Blaze513 | 1:94c648931f84 | 3540 | } |
Blaze513 | 1:94c648931f84 | 3541 | do { |
Blaze513 | 1:94c648931f84 | 3542 | cc = f_putc(s[--i], fil); |
Blaze513 | 1:94c648931f84 | 3543 | res++; |
Blaze513 | 1:94c648931f84 | 3544 | } while (i && cc != EOF); |
Blaze513 | 1:94c648931f84 | 3545 | if (cc != EOF) cc = 0; |
Blaze513 | 1:94c648931f84 | 3546 | } |
Blaze513 | 1:94c648931f84 | 3547 | |
Blaze513 | 1:94c648931f84 | 3548 | va_end(arp); |
Blaze513 | 1:94c648931f84 | 3549 | return (cc == EOF) ? cc : res; |
Blaze513 | 1:94c648931f84 | 3550 | } |
Blaze513 | 1:94c648931f84 | 3551 | |
Blaze513 | 1:94c648931f84 | 3552 | #endif /* !_FS_READONLY */ |
Blaze513 | 1:94c648931f84 | 3553 | #endif /* _USE_STRFUNC */ |