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Dependencies:   mbed

FATFileSystem/ff.c@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1 /*----------------------------------------------------------------------------/
Michael J. Spencer 1:f5ac63519541 2 / FatFs - FAT file system module R0.09 (C)ChaN, 2011
Michael J. Spencer 1:f5ac63519541 3 /-----------------------------------------------------------------------------/
Michael J. Spencer 1:f5ac63519541 4 / FatFs module is a generic FAT file system module for small embedded systems.
Michael J. Spencer 1:f5ac63519541 5 / This is a free software that opened for education, research and commercial
Michael J. Spencer 1:f5ac63519541 6 / developments under license policy of following terms.
Michael J. Spencer 1:f5ac63519541 7 /
Michael J. Spencer 1:f5ac63519541 8 / Copyright (C) 2011, ChaN, all right reserved.
Michael J. Spencer 1:f5ac63519541 9 /
Michael J. Spencer 1:f5ac63519541 10 / * The FatFs module is a free software and there is NO WARRANTY.
Michael J. Spencer 1:f5ac63519541 11 / * No restriction on use. You can use, modify and redistribute it for
Michael J. Spencer 1:f5ac63519541 12 / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
Michael J. Spencer 1:f5ac63519541 13 / * Redistributions of source code must retain the above copyright notice.
Michael J. Spencer 1:f5ac63519541 14 /
Michael J. Spencer 1:f5ac63519541 15 /-----------------------------------------------------------------------------/
Michael J. Spencer 1:f5ac63519541 16 / Feb 26,'06 R0.00 Prototype.
Michael J. Spencer 1:f5ac63519541 17 /
Michael J. Spencer 1:f5ac63519541 18 / Apr 29,'06 R0.01 First stable version.
Michael J. Spencer 1:f5ac63519541 19 /
Michael J. Spencer 1:f5ac63519541 20 / Jun 01,'06 R0.02 Added FAT12 support.
Michael J. Spencer 1:f5ac63519541 21 / Removed unbuffered mode.
Michael J. Spencer 1:f5ac63519541 22 / Fixed a problem on small (<32M) partition.
Michael J. Spencer 1:f5ac63519541 23 / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
Michael J. Spencer 1:f5ac63519541 24 /
Michael J. Spencer 1:f5ac63519541 25 / Sep 22,'06 R0.03 Added f_rename().
Michael J. Spencer 1:f5ac63519541 26 / Changed option _FS_MINIMUM to _FS_MINIMIZE.
Michael J. Spencer 1:f5ac63519541 27 / Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
Michael J. Spencer 1:f5ac63519541 28 / Fixed f_mkdir() creates incorrect directory on FAT32.
Michael J. Spencer 1:f5ac63519541 29 /
Michael J. Spencer 1:f5ac63519541 30 / Feb 04,'07 R0.04 Supported multiple drive system.
Michael J. Spencer 1:f5ac63519541 31 / Changed some interfaces for multiple drive system.
Michael J. Spencer 1:f5ac63519541 32 / Changed f_mountdrv() to f_mount().
Michael J. Spencer 1:f5ac63519541 33 / Added f_mkfs().
Michael J. Spencer 1:f5ac63519541 34 / Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
Michael J. Spencer 1:f5ac63519541 35 / Added a capability of extending file size to f_lseek().
Michael J. Spencer 1:f5ac63519541 36 / Added minimization level 3.
Michael J. Spencer 1:f5ac63519541 37 / Fixed an endian sensitive code in f_mkfs().
Michael J. Spencer 1:f5ac63519541 38 / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
Michael J. Spencer 1:f5ac63519541 39 / Added FSInfo support.
Michael J. Spencer 1:f5ac63519541 40 / Fixed DBCS name can result FR_INVALID_NAME.
Michael J. Spencer 1:f5ac63519541 41 / Fixed short seek (<= csize) collapses the file object.
Michael J. Spencer 1:f5ac63519541 42 /
Michael J. Spencer 1:f5ac63519541 43 / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
Michael J. Spencer 1:f5ac63519541 44 / Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
Michael J. Spencer 1:f5ac63519541 45 / Fixed f_mkdir() on FAT32 creates incorrect directory.
Michael J. Spencer 1:f5ac63519541 46 / Feb 03,'08 R0.05a Added f_truncate() and f_utime().
Michael J. Spencer 1:f5ac63519541 47 / Fixed off by one error at FAT sub-type determination.
Michael J. Spencer 1:f5ac63519541 48 / Fixed btr in f_read() can be mistruncated.
Michael J. Spencer 1:f5ac63519541 49 / Fixed cached sector is not flushed when create and close without write.
Michael J. Spencer 1:f5ac63519541 50 /
Michael J. Spencer 1:f5ac63519541 51 / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
Michael J. Spencer 1:f5ac63519541 52 / Improved performance of f_lseek() on moving to the same or following cluster.
Michael J. Spencer 1:f5ac63519541 53 /
Michael J. Spencer 1:f5ac63519541 54 / Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
Michael J. Spencer 1:f5ac63519541 55 / Added long file name feature.
Michael J. Spencer 1:f5ac63519541 56 / Added multiple code page feature.
Michael J. Spencer 1:f5ac63519541 57 / Added re-entrancy for multitask operation.
Michael J. Spencer 1:f5ac63519541 58 / Added auto cluster size selection to f_mkfs().
Michael J. Spencer 1:f5ac63519541 59 / Added rewind option to f_readdir().
Michael J. Spencer 1:f5ac63519541 60 / Changed result code of critical errors.
Michael J. Spencer 1:f5ac63519541 61 / Renamed string functions to avoid name collision.
Michael J. Spencer 1:f5ac63519541 62 / Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
Michael J. Spencer 1:f5ac63519541 63 / Added multiple sector size feature.
Michael J. Spencer 1:f5ac63519541 64 / Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
Michael J. Spencer 1:f5ac63519541 65 / Fixed wrong cache control in f_lseek().
Michael J. Spencer 1:f5ac63519541 66 / Added relative path feature.
Michael J. Spencer 1:f5ac63519541 67 / Added f_chdir() and f_chdrive().
Michael J. Spencer 1:f5ac63519541 68 / Added proper case conversion to extended char.
Michael J. Spencer 1:f5ac63519541 69 / Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
Michael J. Spencer 1:f5ac63519541 70 / Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
Michael J. Spencer 1:f5ac63519541 71 / Fixed name matching error on the 13 char boundary.
Michael J. Spencer 1:f5ac63519541 72 / Added a configuration option, _LFN_UNICODE.
Michael J. Spencer 1:f5ac63519541 73 / Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
Michael J. Spencer 1:f5ac63519541 74 /
Michael J. Spencer 1:f5ac63519541 75 / May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
Michael J. Spencer 1:f5ac63519541 76 / Added file lock feature. (_FS_SHARE)
Michael J. Spencer 1:f5ac63519541 77 / Added fast seek feature. (_USE_FASTSEEK)
Michael J. Spencer 1:f5ac63519541 78 / Changed some types on the API, XCHAR->TCHAR.
Michael J. Spencer 1:f5ac63519541 79 / Changed fname member in the FILINFO structure on Unicode cfg.
Michael J. Spencer 1:f5ac63519541 80 / String functions support UTF-8 encoding files on Unicode cfg.
Michael J. Spencer 1:f5ac63519541 81 / Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
Michael J. Spencer 1:f5ac63519541 82 / Added sector erase feature. (_USE_ERASE)
Michael J. Spencer 1:f5ac63519541 83 / Moved file lock semaphore table from fs object to the bss.
Michael J. Spencer 1:f5ac63519541 84 / Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
Michael J. Spencer 1:f5ac63519541 85 / Fixed f_mkfs() creates wrong FAT32 volume.
Michael J. Spencer 1:f5ac63519541 86 / Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
Michael J. Spencer 1:f5ac63519541 87 / f_lseek() reports required table size on creating CLMP.
Michael J. Spencer 1:f5ac63519541 88 / Extended format syntax of f_printf function.
Michael J. Spencer 1:f5ac63519541 89 / Ignores duplicated directory separators in given path names.
Michael J. Spencer 1:f5ac63519541 90 /
Michael J. Spencer 1:f5ac63519541 91 / Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature.
Michael J. Spencer 1:f5ac63519541 92 / Added f_fdisk(). (_MULTI_PARTITION = 2)
Michael J. Spencer 1:f5ac63519541 93 /---------------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 94
Michael J. Spencer 1:f5ac63519541 95 #include "ff.h" /* FatFs configurations and declarations */
Michael J. Spencer 1:f5ac63519541 96 #include "diskio.h" /* Declarations of low level disk I/O functions */
Michael J. Spencer 1:f5ac63519541 97
Michael J. Spencer 1:f5ac63519541 98
Michael J. Spencer 1:f5ac63519541 99 /*--------------------------------------------------------------------------
Michael J. Spencer 1:f5ac63519541 100
Michael J. Spencer 1:f5ac63519541 101 Module Private Definitions
Michael J. Spencer 1:f5ac63519541 102
Michael J. Spencer 1:f5ac63519541 103 ---------------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 104
Michael J. Spencer 1:f5ac63519541 105 #if _FATFS != 6502 /* Revision ID */
Michael J. Spencer 1:f5ac63519541 106 #error Wrong include file (ff.h).
Michael J. Spencer 1:f5ac63519541 107 #endif
Michael J. Spencer 1:f5ac63519541 108
Michael J. Spencer 1:f5ac63519541 109
Michael J. Spencer 1:f5ac63519541 110 /* Definitions on sector size */
Michael J. Spencer 1:f5ac63519541 111 #if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
Michael J. Spencer 1:f5ac63519541 112 #error Wrong sector size.
Michael J. Spencer 1:f5ac63519541 113 #endif
Michael J. Spencer 1:f5ac63519541 114 #if _MAX_SS != 512
Michael J. Spencer 1:f5ac63519541 115 #define SS(fs) ((fs)->ssize) /* Variable sector size */
Michael J. Spencer 1:f5ac63519541 116 #else
Michael J. Spencer 1:f5ac63519541 117 #define SS(fs) 512U /* Fixed sector size */
Michael J. Spencer 1:f5ac63519541 118 #endif
Michael J. Spencer 1:f5ac63519541 119
Michael J. Spencer 1:f5ac63519541 120
Michael J. Spencer 1:f5ac63519541 121 /* Reentrancy related */
Michael J. Spencer 1:f5ac63519541 122 #if _FS_REENTRANT
Michael J. Spencer 1:f5ac63519541 123 #if _USE_LFN == 1
Michael J. Spencer 1:f5ac63519541 124 #error Static LFN work area must not be used in re-entrant configuration.
Michael J. Spencer 1:f5ac63519541 125 #endif
Michael J. Spencer 1:f5ac63519541 126 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
Michael J. Spencer 1:f5ac63519541 127 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
Michael J. Spencer 1:f5ac63519541 128 #else
Michael J. Spencer 1:f5ac63519541 129 #define ENTER_FF(fs)
Michael J. Spencer 1:f5ac63519541 130 #define LEAVE_FF(fs, res) return res
Michael J. Spencer 1:f5ac63519541 131 #endif
Michael J. Spencer 1:f5ac63519541 132
Michael J. Spencer 1:f5ac63519541 133 #define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
Michael J. Spencer 1:f5ac63519541 134
Michael J. Spencer 1:f5ac63519541 135
Michael J. Spencer 1:f5ac63519541 136 /* File shareing feature */
Michael J. Spencer 1:f5ac63519541 137 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 138 #if _FS_READONLY
Michael J. Spencer 1:f5ac63519541 139 #error _FS_SHARE must be 0 on read-only cfg.
Michael J. Spencer 1:f5ac63519541 140 #endif
Michael J. Spencer 1:f5ac63519541 141 typedef struct {
Michael J. Spencer 1:f5ac63519541 142 FATFS *fs; /* File ID 1, volume (NULL:blank entry) */
Michael J. Spencer 1:f5ac63519541 143 DWORD clu; /* File ID 2, directory */
Michael J. Spencer 1:f5ac63519541 144 WORD idx; /* File ID 3, directory index */
Michael J. Spencer 1:f5ac63519541 145 WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
Michael J. Spencer 1:f5ac63519541 146 } FILESEM;
Michael J. Spencer 1:f5ac63519541 147 #endif
Michael J. Spencer 1:f5ac63519541 148
Michael J. Spencer 1:f5ac63519541 149
Michael J. Spencer 1:f5ac63519541 150 /* Misc definitions */
Michael J. Spencer 1:f5ac63519541 151 #define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
Michael J. Spencer 1:f5ac63519541 152 #define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);}
Michael J. Spencer 1:f5ac63519541 153
Michael J. Spencer 1:f5ac63519541 154
Michael J. Spencer 1:f5ac63519541 155 /* DBCS code ranges and SBCS extend char conversion table */
Michael J. Spencer 1:f5ac63519541 156
Michael J. Spencer 1:f5ac63519541 157 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
Michael J. Spencer 1:f5ac63519541 158 #define _DF1S 0x81 /* DBC 1st byte range 1 start */
Michael J. Spencer 1:f5ac63519541 159 #define _DF1E 0x9F /* DBC 1st byte range 1 end */
Michael J. Spencer 1:f5ac63519541 160 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
Michael J. Spencer 1:f5ac63519541 161 #define _DF2E 0xFC /* DBC 1st byte range 2 end */
Michael J. Spencer 1:f5ac63519541 162 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
Michael J. Spencer 1:f5ac63519541 163 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
Michael J. Spencer 1:f5ac63519541 164 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
Michael J. Spencer 1:f5ac63519541 165 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
Michael J. Spencer 1:f5ac63519541 166
Michael J. Spencer 1:f5ac63519541 167 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
Michael J. Spencer 1:f5ac63519541 168 #define _DF1S 0x81
Michael J. Spencer 1:f5ac63519541 169 #define _DF1E 0xFE
Michael J. Spencer 1:f5ac63519541 170 #define _DS1S 0x40
Michael J. Spencer 1:f5ac63519541 171 #define _DS1E 0x7E
Michael J. Spencer 1:f5ac63519541 172 #define _DS2S 0x80
Michael J. Spencer 1:f5ac63519541 173 #define _DS2E 0xFE
Michael J. Spencer 1:f5ac63519541 174
Michael J. Spencer 1:f5ac63519541 175 #elif _CODE_PAGE == 949 /* Korean */
Michael J. Spencer 1:f5ac63519541 176 #define _DF1S 0x81
Michael J. Spencer 1:f5ac63519541 177 #define _DF1E 0xFE
Michael J. Spencer 1:f5ac63519541 178 #define _DS1S 0x41
Michael J. Spencer 1:f5ac63519541 179 #define _DS1E 0x5A
Michael J. Spencer 1:f5ac63519541 180 #define _DS2S 0x61
Michael J. Spencer 1:f5ac63519541 181 #define _DS2E 0x7A
Michael J. Spencer 1:f5ac63519541 182 #define _DS3S 0x81
Michael J. Spencer 1:f5ac63519541 183 #define _DS3E 0xFE
Michael J. Spencer 1:f5ac63519541 184
Michael J. Spencer 1:f5ac63519541 185 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
Michael J. Spencer 1:f5ac63519541 186 #define _DF1S 0x81
Michael J. Spencer 1:f5ac63519541 187 #define _DF1E 0xFE
Michael J. Spencer 1:f5ac63519541 188 #define _DS1S 0x40
Michael J. Spencer 1:f5ac63519541 189 #define _DS1E 0x7E
Michael J. Spencer 1:f5ac63519541 190 #define _DS2S 0xA1
Michael J. Spencer 1:f5ac63519541 191 #define _DS2E 0xFE
Michael J. Spencer 1:f5ac63519541 192
Michael J. Spencer 1:f5ac63519541 193 #elif _CODE_PAGE == 437 /* U.S. (OEM) */
Michael J. Spencer 1:f5ac63519541 194 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 195 #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 196 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 197 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 198 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 199
Michael J. Spencer 1:f5ac63519541 200 #elif _CODE_PAGE == 720 /* Arabic (OEM) */
Michael J. Spencer 1:f5ac63519541 201 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 202 #define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 203 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 204 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 205 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 206
Michael J. Spencer 1:f5ac63519541 207 #elif _CODE_PAGE == 737 /* Greek (OEM) */
Michael J. Spencer 1:f5ac63519541 208 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 209 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
Michael J. Spencer 1:f5ac63519541 210 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 211 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 212 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 213
Michael J. Spencer 1:f5ac63519541 214 #elif _CODE_PAGE == 775 /* Baltic (OEM) */
Michael J. Spencer 1:f5ac63519541 215 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 216 #define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 217 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 218 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 219 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 220
Michael J. Spencer 1:f5ac63519541 221 #elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
Michael J. Spencer 1:f5ac63519541 222 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 223 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 224 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 225 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 226 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 227
Michael J. Spencer 1:f5ac63519541 228 #elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
Michael J. Spencer 1:f5ac63519541 229 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 230 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 231 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
Michael J. Spencer 1:f5ac63519541 232 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 233 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 234
Michael J. Spencer 1:f5ac63519541 235 #elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
Michael J. Spencer 1:f5ac63519541 236 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 237 #define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
Michael J. Spencer 1:f5ac63519541 238 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 239 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
Michael J. Spencer 1:f5ac63519541 240 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 241
Michael J. Spencer 1:f5ac63519541 242 #elif _CODE_PAGE == 857 /* Turkish (OEM) */
Michael J. Spencer 1:f5ac63519541 243 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 244 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
Michael J. Spencer 1:f5ac63519541 245 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 246 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 247 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 248
Michael J. Spencer 1:f5ac63519541 249 #elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
Michael J. Spencer 1:f5ac63519541 250 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 251 #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 252 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 253 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 254 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 255
Michael J. Spencer 1:f5ac63519541 256 #elif _CODE_PAGE == 862 /* Hebrew (OEM) */
Michael J. Spencer 1:f5ac63519541 257 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 258 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 259 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 260 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 261 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 262
Michael J. Spencer 1:f5ac63519541 263 #elif _CODE_PAGE == 866 /* Russian (OEM) */
Michael J. Spencer 1:f5ac63519541 264 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 265 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 266 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 267 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 268 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 269
Michael J. Spencer 1:f5ac63519541 270 #elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
Michael J. Spencer 1:f5ac63519541 271 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 272 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 273 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 274 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 275 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 276
Michael J. Spencer 1:f5ac63519541 277 #elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
Michael J. Spencer 1:f5ac63519541 278 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 279 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
Michael J. Spencer 1:f5ac63519541 280 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
Michael J. Spencer 1:f5ac63519541 281 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 282 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
Michael J. Spencer 1:f5ac63519541 283
Michael J. Spencer 1:f5ac63519541 284 #elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
Michael J. Spencer 1:f5ac63519541 285 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 286 #define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
Michael J. Spencer 1:f5ac63519541 287 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
Michael J. Spencer 1:f5ac63519541 288 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 289 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
Michael J. Spencer 1:f5ac63519541 290
Michael J. Spencer 1:f5ac63519541 291 #elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
Michael J. Spencer 1:f5ac63519541 292 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 293 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
Michael J. Spencer 1:f5ac63519541 294 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 295 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 296 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
Michael J. Spencer 1:f5ac63519541 297
Michael J. Spencer 1:f5ac63519541 298 #elif _CODE_PAGE == 1253 /* Greek (Windows) */
Michael J. Spencer 1:f5ac63519541 299 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 300 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 301 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 302 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
Michael J. Spencer 1:f5ac63519541 303 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
Michael J. Spencer 1:f5ac63519541 304
Michael J. Spencer 1:f5ac63519541 305 #elif _CODE_PAGE == 1254 /* Turkish (Windows) */
Michael J. Spencer 1:f5ac63519541 306 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 307 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 308 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 309 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 310 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
Michael J. Spencer 1:f5ac63519541 311
Michael J. Spencer 1:f5ac63519541 312 #elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
Michael J. Spencer 1:f5ac63519541 313 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 314 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 315 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 316 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 317 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 318
Michael J. Spencer 1:f5ac63519541 319 #elif _CODE_PAGE == 1256 /* Arabic (Windows) */
Michael J. Spencer 1:f5ac63519541 320 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 321 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 322 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 323 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 324 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
Michael J. Spencer 1:f5ac63519541 325
Michael J. Spencer 1:f5ac63519541 326 #elif _CODE_PAGE == 1257 /* Baltic (Windows) */
Michael J. Spencer 1:f5ac63519541 327 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 328 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 329 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
Michael J. Spencer 1:f5ac63519541 330 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 331 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
Michael J. Spencer 1:f5ac63519541 332
Michael J. Spencer 1:f5ac63519541 333 #elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
Michael J. Spencer 1:f5ac63519541 334 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 335 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
Michael J. Spencer 1:f5ac63519541 336 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
Michael J. Spencer 1:f5ac63519541 337 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
Michael J. Spencer 1:f5ac63519541 338 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
Michael J. Spencer 1:f5ac63519541 339
Michael J. Spencer 1:f5ac63519541 340 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
Michael J. Spencer 1:f5ac63519541 341 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 342 #error Cannot use LFN feature without valid code page.
Michael J. Spencer 1:f5ac63519541 343 #endif
Michael J. Spencer 1:f5ac63519541 344 #define _DF1S 0
Michael J. Spencer 1:f5ac63519541 345
Michael J. Spencer 1:f5ac63519541 346 #else
Michael J. Spencer 1:f5ac63519541 347 #error Unknown code page
Michael J. Spencer 1:f5ac63519541 348
Michael J. Spencer 1:f5ac63519541 349 #endif
Michael J. Spencer 1:f5ac63519541 350
Michael J. Spencer 1:f5ac63519541 351
Michael J. Spencer 1:f5ac63519541 352 /* Character code support macros */
Michael J. Spencer 1:f5ac63519541 353 #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
Michael J. Spencer 1:f5ac63519541 354 #define IsLower(c) (((c)>='a')&&((c)<='z'))
Michael J. Spencer 1:f5ac63519541 355 #define IsDigit(c) (((c)>='0')&&((c)<='9'))
Michael J. Spencer 1:f5ac63519541 356
Michael J. Spencer 1:f5ac63519541 357 #if _DF1S /* Code page is DBCS */
Michael J. Spencer 1:f5ac63519541 358
Michael J. Spencer 1:f5ac63519541 359 #ifdef _DF2S /* Two 1st byte areas */
Michael J. Spencer 1:f5ac63519541 360 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
Michael J. Spencer 1:f5ac63519541 361 #else /* One 1st byte area */
Michael J. Spencer 1:f5ac63519541 362 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
Michael J. Spencer 1:f5ac63519541 363 #endif
Michael J. Spencer 1:f5ac63519541 364
Michael J. Spencer 1:f5ac63519541 365 #ifdef _DS3S /* Three 2nd byte areas */
Michael J. Spencer 1:f5ac63519541 366 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
Michael J. Spencer 1:f5ac63519541 367 #else /* Two 2nd byte areas */
Michael J. Spencer 1:f5ac63519541 368 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
Michael J. Spencer 1:f5ac63519541 369 #endif
Michael J. Spencer 1:f5ac63519541 370
Michael J. Spencer 1:f5ac63519541 371 #else /* Code page is SBCS */
Michael J. Spencer 1:f5ac63519541 372
Michael J. Spencer 1:f5ac63519541 373 #define IsDBCS1(c) 0
Michael J. Spencer 1:f5ac63519541 374 #define IsDBCS2(c) 0
Michael J. Spencer 1:f5ac63519541 375
Michael J. Spencer 1:f5ac63519541 376 #endif /* _DF1S */
Michael J. Spencer 1:f5ac63519541 377
Michael J. Spencer 1:f5ac63519541 378
Michael J. Spencer 1:f5ac63519541 379 /* Name status flags */
Michael J. Spencer 1:f5ac63519541 380 #define NS 11 /* Index of name status byte in fn[] */
Michael J. Spencer 1:f5ac63519541 381 #define NS_LOSS 0x01 /* Out of 8.3 format */
Michael J. Spencer 1:f5ac63519541 382 #define NS_LFN 0x02 /* Force to create LFN entry */
Michael J. Spencer 1:f5ac63519541 383 #define NS_LAST 0x04 /* Last segment */
Michael J. Spencer 1:f5ac63519541 384 #define NS_BODY 0x08 /* Lower case flag (body) */
Michael J. Spencer 1:f5ac63519541 385 #define NS_EXT 0x10 /* Lower case flag (ext) */
Michael J. Spencer 1:f5ac63519541 386 #define NS_DOT 0x20 /* Dot entry */
Michael J. Spencer 1:f5ac63519541 387
Michael J. Spencer 1:f5ac63519541 388
Michael J. Spencer 1:f5ac63519541 389 /* FAT sub-type boundaries */
Michael J. Spencer 1:f5ac63519541 390 /* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
Michael J. Spencer 1:f5ac63519541 391 #define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
Michael J. Spencer 1:f5ac63519541 392 #define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
Michael J. Spencer 1:f5ac63519541 393
Michael J. Spencer 1:f5ac63519541 394
Michael J. Spencer 1:f5ac63519541 395 /* FatFs refers the members in the FAT structures as byte array instead of
Michael J. Spencer 1:f5ac63519541 396 / structure member because the structure is not binary compatible between
Michael J. Spencer 1:f5ac63519541 397 / different platforms */
Michael J. Spencer 1:f5ac63519541 398
Michael J. Spencer 1:f5ac63519541 399 #define BS_jmpBoot 0 /* Jump instruction (3) */
Michael J. Spencer 1:f5ac63519541 400 #define BS_OEMName 3 /* OEM name (8) */
Michael J. Spencer 1:f5ac63519541 401 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
Michael J. Spencer 1:f5ac63519541 402 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
Michael J. Spencer 1:f5ac63519541 403 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
Michael J. Spencer 1:f5ac63519541 404 #define BPB_NumFATs 16 /* Number of FAT copies (1) */
Michael J. Spencer 1:f5ac63519541 405 #define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
Michael J. Spencer 1:f5ac63519541 406 #define BPB_TotSec16 19 /* Volume size [sector] (2) */
Michael J. Spencer 1:f5ac63519541 407 #define BPB_Media 21 /* Media descriptor (1) */
Michael J. Spencer 1:f5ac63519541 408 #define BPB_FATSz16 22 /* FAT size [sector] (2) */
Michael J. Spencer 1:f5ac63519541 409 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */
Michael J. Spencer 1:f5ac63519541 410 #define BPB_NumHeads 26 /* Number of heads (2) */
Michael J. Spencer 1:f5ac63519541 411 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
Michael J. Spencer 1:f5ac63519541 412 #define BPB_TotSec32 32 /* Volume size [sector] (4) */
Michael J. Spencer 1:f5ac63519541 413 #define BS_DrvNum 36 /* Physical drive number (2) */
Michael J. Spencer 1:f5ac63519541 414 #define BS_BootSig 38 /* Extended boot signature (1) */
Michael J. Spencer 1:f5ac63519541 415 #define BS_VolID 39 /* Volume serial number (4) */
Michael J. Spencer 1:f5ac63519541 416 #define BS_VolLab 43 /* Volume label (8) */
Michael J. Spencer 1:f5ac63519541 417 #define BS_FilSysType 54 /* File system type (1) */
Michael J. Spencer 1:f5ac63519541 418 #define BPB_FATSz32 36 /* FAT size [sector] (4) */
Michael J. Spencer 1:f5ac63519541 419 #define BPB_ExtFlags 40 /* Extended flags (2) */
Michael J. Spencer 1:f5ac63519541 420 #define BPB_FSVer 42 /* File system version (2) */
Michael J. Spencer 1:f5ac63519541 421 #define BPB_RootClus 44 /* Root dir first cluster (4) */
Michael J. Spencer 1:f5ac63519541 422 #define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
Michael J. Spencer 1:f5ac63519541 423 #define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */
Michael J. Spencer 1:f5ac63519541 424 #define BS_DrvNum32 64 /* Physical drive number (2) */
Michael J. Spencer 1:f5ac63519541 425 #define BS_BootSig32 66 /* Extended boot signature (1) */
Michael J. Spencer 1:f5ac63519541 426 #define BS_VolID32 67 /* Volume serial number (4) */
Michael J. Spencer 1:f5ac63519541 427 #define BS_VolLab32 71 /* Volume label (8) */
Michael J. Spencer 1:f5ac63519541 428 #define BS_FilSysType32 82 /* File system type (1) */
Michael J. Spencer 1:f5ac63519541 429 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */
Michael J. Spencer 1:f5ac63519541 430 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */
Michael J. Spencer 1:f5ac63519541 431 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
Michael J. Spencer 1:f5ac63519541 432 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
Michael J. Spencer 1:f5ac63519541 433 #define MBR_Table 446 /* MBR: Partition table offset (2) */
Michael J. Spencer 1:f5ac63519541 434 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
Michael J. Spencer 1:f5ac63519541 435 #define BS_55AA 510 /* Boot sector signature (2) */
Michael J. Spencer 1:f5ac63519541 436
Michael J. Spencer 1:f5ac63519541 437 #define DIR_Name 0 /* Short file name (11) */
Michael J. Spencer 1:f5ac63519541 438 #define DIR_Attr 11 /* Attribute (1) */
Michael J. Spencer 1:f5ac63519541 439 #define DIR_NTres 12 /* NT flag (1) */
Michael J. Spencer 1:f5ac63519541 440 #define DIR_CrtTime 14 /* Created time (2) */
Michael J. Spencer 1:f5ac63519541 441 #define DIR_CrtDate 16 /* Created date (2) */
Michael J. Spencer 1:f5ac63519541 442 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
Michael J. Spencer 1:f5ac63519541 443 #define DIR_WrtTime 22 /* Modified time (2) */
Michael J. Spencer 1:f5ac63519541 444 #define DIR_WrtDate 24 /* Modified date (2) */
Michael J. Spencer 1:f5ac63519541 445 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
Michael J. Spencer 1:f5ac63519541 446 #define DIR_FileSize 28 /* File size (4) */
Michael J. Spencer 1:f5ac63519541 447 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
Michael J. Spencer 1:f5ac63519541 448 #define LDIR_Attr 11 /* LFN attribute (1) */
Michael J. Spencer 1:f5ac63519541 449 #define LDIR_Type 12 /* LFN type (1) */
Michael J. Spencer 1:f5ac63519541 450 #define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
Michael J. Spencer 1:f5ac63519541 451 #define LDIR_FstClusLO 26 /* Filled by zero (0) */
Michael J. Spencer 1:f5ac63519541 452 #define SZ_DIR 32 /* Size of a directory entry */
Michael J. Spencer 1:f5ac63519541 453 #define LLE 0x40 /* Last long entry flag in LDIR_Ord */
Michael J. Spencer 1:f5ac63519541 454 #define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */
Michael J. Spencer 1:f5ac63519541 455 #define NDDE 0x05 /* Replacement of a character collides with DDE */
Michael J. Spencer 1:f5ac63519541 456
Michael J. Spencer 1:f5ac63519541 457
Michael J. Spencer 1:f5ac63519541 458 /*------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 459 /* Module private work area */
Michael J. Spencer 1:f5ac63519541 460 /*------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 461 /* Note that uninitialized variables with static duration are
Michael J. Spencer 1:f5ac63519541 462 / zeroed/nulled at start-up. If not, the compiler or start-up
Michael J. Spencer 1:f5ac63519541 463 / routine is out of ANSI-C standard.
Michael J. Spencer 1:f5ac63519541 464 */
Michael J. Spencer 1:f5ac63519541 465
Michael J. Spencer 1:f5ac63519541 466 #if _VOLUMES
Michael J. Spencer 1:f5ac63519541 467 static
Michael J. Spencer 1:f5ac63519541 468 FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
Michael J. Spencer 1:f5ac63519541 469 #else
Michael J. Spencer 1:f5ac63519541 470 #error Number of volumes must not be 0.
Michael J. Spencer 1:f5ac63519541 471 #endif
Michael J. Spencer 1:f5ac63519541 472
Michael J. Spencer 1:f5ac63519541 473 static
Michael J. Spencer 1:f5ac63519541 474 WORD Fsid; /* File system mount ID */
Michael J. Spencer 1:f5ac63519541 475
Michael J. Spencer 1:f5ac63519541 476 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 477 static
Michael J. Spencer 1:f5ac63519541 478 BYTE CurrVol; /* Current drive */
Michael J. Spencer 1:f5ac63519541 479 #endif
Michael J. Spencer 1:f5ac63519541 480
Michael J. Spencer 1:f5ac63519541 481 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 482 static
Michael J. Spencer 1:f5ac63519541 483 FILESEM Files[_FS_SHARE]; /* File lock semaphores */
Michael J. Spencer 1:f5ac63519541 484 #endif
Michael J. Spencer 1:f5ac63519541 485
Michael J. Spencer 1:f5ac63519541 486 #if _USE_LFN == 0 /* No LFN feature */
Michael J. Spencer 1:f5ac63519541 487 #define DEF_NAMEBUF BYTE sfn[12]
Michael J. Spencer 1:f5ac63519541 488 #define INIT_BUF(dobj) (dobj).fn = sfn
Michael J. Spencer 1:f5ac63519541 489 #define FREE_BUF()
Michael J. Spencer 1:f5ac63519541 490
Michael J. Spencer 1:f5ac63519541 491 #elif _USE_LFN == 1 /* LFN feature with static working buffer */
Michael J. Spencer 1:f5ac63519541 492 static WCHAR LfnBuf[_MAX_LFN+1];
Michael J. Spencer 1:f5ac63519541 493 #define DEF_NAMEBUF BYTE sfn[12]
Michael J. Spencer 1:f5ac63519541 494 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
Michael J. Spencer 1:f5ac63519541 495 #define FREE_BUF()
Michael J. Spencer 1:f5ac63519541 496
Michael J. Spencer 1:f5ac63519541 497 #elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
Michael J. Spencer 1:f5ac63519541 498 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
Michael J. Spencer 1:f5ac63519541 499 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
Michael J. Spencer 1:f5ac63519541 500 #define FREE_BUF()
Michael J. Spencer 1:f5ac63519541 501
Michael J. Spencer 1:f5ac63519541 502 #elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
Michael J. Spencer 1:f5ac63519541 503 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
Michael J. Spencer 1:f5ac63519541 504 #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
Michael J. Spencer 1:f5ac63519541 505 if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
Michael J. Spencer 1:f5ac63519541 506 (dobj).lfn = lfn; (dobj).fn = sfn; }
Michael J. Spencer 1:f5ac63519541 507 #define FREE_BUF() ff_memfree(lfn)
Michael J. Spencer 1:f5ac63519541 508
Michael J. Spencer 1:f5ac63519541 509 #else
Michael J. Spencer 1:f5ac63519541 510 #error Wrong LFN configuration.
Michael J. Spencer 1:f5ac63519541 511 #endif
Michael J. Spencer 1:f5ac63519541 512
Michael J. Spencer 1:f5ac63519541 513
Michael J. Spencer 1:f5ac63519541 514
Michael J. Spencer 1:f5ac63519541 515
Michael J. Spencer 1:f5ac63519541 516 /*--------------------------------------------------------------------------
Michael J. Spencer 1:f5ac63519541 517
Michael J. Spencer 1:f5ac63519541 518 Module Private Functions
Michael J. Spencer 1:f5ac63519541 519
Michael J. Spencer 1:f5ac63519541 520 ---------------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 521
Michael J. Spencer 1:f5ac63519541 522
Michael J. Spencer 1:f5ac63519541 523 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 524 /* String functions */
Michael J. Spencer 1:f5ac63519541 525 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 526
Michael J. Spencer 1:f5ac63519541 527 /* Copy memory to memory */
Michael J. Spencer 1:f5ac63519541 528 static
Michael J. Spencer 1:f5ac63519541 529 void mem_cpy (void* dst, const void* src, UINT cnt) {
Michael J. Spencer 1:f5ac63519541 530 BYTE *d = (BYTE*)dst;
Michael J. Spencer 1:f5ac63519541 531 const BYTE *s = (const BYTE*)src;
Michael J. Spencer 1:f5ac63519541 532
Michael J. Spencer 1:f5ac63519541 533 #if _WORD_ACCESS == 1
Michael J. Spencer 1:f5ac63519541 534 while (cnt >= sizeof(int)) {
Michael J. Spencer 1:f5ac63519541 535 *(int*)d = *(int*)s;
Michael J. Spencer 1:f5ac63519541 536 d += sizeof(int); s += sizeof(int);
Michael J. Spencer 1:f5ac63519541 537 cnt -= sizeof(int);
Michael J. Spencer 1:f5ac63519541 538 }
Michael J. Spencer 1:f5ac63519541 539 #endif
Michael J. Spencer 1:f5ac63519541 540 while (cnt--)
Michael J. Spencer 1:f5ac63519541 541 *d++ = *s++;
Michael J. Spencer 1:f5ac63519541 542 }
Michael J. Spencer 1:f5ac63519541 543
Michael J. Spencer 1:f5ac63519541 544 /* Fill memory */
Michael J. Spencer 1:f5ac63519541 545 static
Michael J. Spencer 1:f5ac63519541 546 void mem_set (void* dst, int val, UINT cnt) {
Michael J. Spencer 1:f5ac63519541 547 BYTE *d = (BYTE*)dst;
Michael J. Spencer 1:f5ac63519541 548
Michael J. Spencer 1:f5ac63519541 549 while (cnt--)
Michael J. Spencer 1:f5ac63519541 550 *d++ = (BYTE)val;
Michael J. Spencer 1:f5ac63519541 551 }
Michael J. Spencer 1:f5ac63519541 552
Michael J. Spencer 1:f5ac63519541 553 /* Compare memory to memory */
Michael J. Spencer 1:f5ac63519541 554 static
Michael J. Spencer 1:f5ac63519541 555 int mem_cmp (const void* dst, const void* src, UINT cnt) {
Michael J. Spencer 1:f5ac63519541 556 const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
Michael J. Spencer 1:f5ac63519541 557 int r = 0;
Michael J. Spencer 1:f5ac63519541 558
Michael J. Spencer 1:f5ac63519541 559 while (cnt-- && (r = *d++ - *s++) == 0) ;
Michael J. Spencer 1:f5ac63519541 560 return r;
Michael J. Spencer 1:f5ac63519541 561 }
Michael J. Spencer 1:f5ac63519541 562
Michael J. Spencer 1:f5ac63519541 563 /* Check if chr is contained in the string */
Michael J. Spencer 1:f5ac63519541 564 static
Michael J. Spencer 1:f5ac63519541 565 int chk_chr (const char* str, int chr) {
Michael J. Spencer 1:f5ac63519541 566 while (*str && *str != chr) str++;
Michael J. Spencer 1:f5ac63519541 567 return *str;
Michael J. Spencer 1:f5ac63519541 568 }
Michael J. Spencer 1:f5ac63519541 569
Michael J. Spencer 1:f5ac63519541 570
Michael J. Spencer 1:f5ac63519541 571
Michael J. Spencer 1:f5ac63519541 572 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 573 /* Request/Release grant to access the volume */
Michael J. Spencer 1:f5ac63519541 574 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 575 #if _FS_REENTRANT
Michael J. Spencer 1:f5ac63519541 576
Michael J. Spencer 1:f5ac63519541 577 static
Michael J. Spencer 1:f5ac63519541 578 int lock_fs (
Michael J. Spencer 1:f5ac63519541 579 FATFS *fs /* File system object */
Michael J. Spencer 1:f5ac63519541 580 )
Michael J. Spencer 1:f5ac63519541 581 {
Michael J. Spencer 1:f5ac63519541 582 return ff_req_grant(fs->sobj);
Michael J. Spencer 1:f5ac63519541 583 }
Michael J. Spencer 1:f5ac63519541 584
Michael J. Spencer 1:f5ac63519541 585
Michael J. Spencer 1:f5ac63519541 586 static
Michael J. Spencer 1:f5ac63519541 587 void unlock_fs (
Michael J. Spencer 1:f5ac63519541 588 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 589 FRESULT res /* Result code to be returned */
Michael J. Spencer 1:f5ac63519541 590 )
Michael J. Spencer 1:f5ac63519541 591 {
Michael J. Spencer 1:f5ac63519541 592 if (res != FR_NOT_ENABLED &&
Michael J. Spencer 1:f5ac63519541 593 res != FR_INVALID_DRIVE &&
Michael J. Spencer 1:f5ac63519541 594 res != FR_INVALID_OBJECT &&
Michael J. Spencer 1:f5ac63519541 595 res != FR_TIMEOUT) {
Michael J. Spencer 1:f5ac63519541 596 ff_rel_grant(fs->sobj);
Michael J. Spencer 1:f5ac63519541 597 }
Michael J. Spencer 1:f5ac63519541 598 }
Michael J. Spencer 1:f5ac63519541 599 #endif
Michael J. Spencer 1:f5ac63519541 600
Michael J. Spencer 1:f5ac63519541 601
Michael J. Spencer 1:f5ac63519541 602
Michael J. Spencer 1:f5ac63519541 603 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 604 /* File shareing control functions */
Michael J. Spencer 1:f5ac63519541 605 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 606 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 607
Michael J. Spencer 1:f5ac63519541 608 static
Michael J. Spencer 1:f5ac63519541 609 FRESULT chk_lock ( /* Check if the file can be accessed */
Michael J. Spencer 1:f5ac63519541 610 FATFS_DIR* dj, /* Directory object pointing the file to be checked */
Michael J. Spencer 1:f5ac63519541 611 int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
Michael J. Spencer 1:f5ac63519541 612 )
Michael J. Spencer 1:f5ac63519541 613 {
Michael J. Spencer 1:f5ac63519541 614 UINT i, be;
Michael J. Spencer 1:f5ac63519541 615
Michael J. Spencer 1:f5ac63519541 616 /* Search file semaphore table */
Michael J. Spencer 1:f5ac63519541 617 for (i = be = 0; i < _FS_SHARE; i++) {
Michael J. Spencer 1:f5ac63519541 618 if (Files[i].fs) { /* Existing entry */
Michael J. Spencer 1:f5ac63519541 619 if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
Michael J. Spencer 1:f5ac63519541 620 Files[i].clu == dj->sclust &&
Michael J. Spencer 1:f5ac63519541 621 Files[i].idx == dj->index) break;
Michael J. Spencer 1:f5ac63519541 622 } else { /* Blank entry */
Michael J. Spencer 1:f5ac63519541 623 be++;
Michael J. Spencer 1:f5ac63519541 624 }
Michael J. Spencer 1:f5ac63519541 625 }
Michael J. Spencer 1:f5ac63519541 626 if (i == _FS_SHARE) /* The file is not opened */
Michael J. Spencer 1:f5ac63519541 627 return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
Michael J. Spencer 1:f5ac63519541 628
Michael J. Spencer 1:f5ac63519541 629 /* The file has been opened. Reject any open against writing file and all write mode open */
Michael J. Spencer 1:f5ac63519541 630 return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
Michael J. Spencer 1:f5ac63519541 631 }
Michael J. Spencer 1:f5ac63519541 632
Michael J. Spencer 1:f5ac63519541 633
Michael J. Spencer 1:f5ac63519541 634 static
Michael J. Spencer 1:f5ac63519541 635 int enq_lock (void) /* Check if an entry is available for a new file */
Michael J. Spencer 1:f5ac63519541 636 {
Michael J. Spencer 1:f5ac63519541 637 UINT i;
Michael J. Spencer 1:f5ac63519541 638
Michael J. Spencer 1:f5ac63519541 639 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
Michael J. Spencer 1:f5ac63519541 640 return (i == _FS_SHARE) ? 0 : 1;
Michael J. Spencer 1:f5ac63519541 641 }
Michael J. Spencer 1:f5ac63519541 642
Michael J. Spencer 1:f5ac63519541 643
Michael J. Spencer 1:f5ac63519541 644 static
Michael J. Spencer 1:f5ac63519541 645 UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
Michael J. Spencer 1:f5ac63519541 646 FATFS_DIR* dj, /* Directory object pointing the file to register or increment */
Michael J. Spencer 1:f5ac63519541 647 int acc /* Desired access mode (0:Read, !0:Write) */
Michael J. Spencer 1:f5ac63519541 648 )
Michael J. Spencer 1:f5ac63519541 649 {
Michael J. Spencer 1:f5ac63519541 650 UINT i;
Michael J. Spencer 1:f5ac63519541 651
Michael J. Spencer 1:f5ac63519541 652
Michael J. Spencer 1:f5ac63519541 653 for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
Michael J. Spencer 1:f5ac63519541 654 if (Files[i].fs == dj->fs &&
Michael J. Spencer 1:f5ac63519541 655 Files[i].clu == dj->sclust &&
Michael J. Spencer 1:f5ac63519541 656 Files[i].idx == dj->index) break;
Michael J. Spencer 1:f5ac63519541 657 }
Michael J. Spencer 1:f5ac63519541 658
Michael J. Spencer 1:f5ac63519541 659 if (i == _FS_SHARE) { /* Not opened. Register it as new. */
Michael J. Spencer 1:f5ac63519541 660 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
Michael J. Spencer 1:f5ac63519541 661 if (i == _FS_SHARE) return 0; /* No space to register (int err) */
Michael J. Spencer 1:f5ac63519541 662 Files[i].fs = dj->fs;
Michael J. Spencer 1:f5ac63519541 663 Files[i].clu = dj->sclust;
Michael J. Spencer 1:f5ac63519541 664 Files[i].idx = dj->index;
Michael J. Spencer 1:f5ac63519541 665 Files[i].ctr = 0;
Michael J. Spencer 1:f5ac63519541 666 }
Michael J. Spencer 1:f5ac63519541 667
Michael J. Spencer 1:f5ac63519541 668 if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
Michael J. Spencer 1:f5ac63519541 669
Michael J. Spencer 1:f5ac63519541 670 Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
Michael J. Spencer 1:f5ac63519541 671
Michael J. Spencer 1:f5ac63519541 672 return i + 1;
Michael J. Spencer 1:f5ac63519541 673 }
Michael J. Spencer 1:f5ac63519541 674
Michael J. Spencer 1:f5ac63519541 675
Michael J. Spencer 1:f5ac63519541 676 static
Michael J. Spencer 1:f5ac63519541 677 FRESULT dec_lock ( /* Decrement file open counter */
Michael J. Spencer 1:f5ac63519541 678 UINT i /* Semaphore index */
Michael J. Spencer 1:f5ac63519541 679 )
Michael J. Spencer 1:f5ac63519541 680 {
Michael J. Spencer 1:f5ac63519541 681 WORD n;
Michael J. Spencer 1:f5ac63519541 682 FRESULT res;
Michael J. Spencer 1:f5ac63519541 683
Michael J. Spencer 1:f5ac63519541 684
Michael J. Spencer 1:f5ac63519541 685 if (--i < _FS_SHARE) {
Michael J. Spencer 1:f5ac63519541 686 n = Files[i].ctr;
Michael J. Spencer 1:f5ac63519541 687 if (n == 0x100) n = 0;
Michael J. Spencer 1:f5ac63519541 688 if (n) n--;
Michael J. Spencer 1:f5ac63519541 689 Files[i].ctr = n;
Michael J. Spencer 1:f5ac63519541 690 if (!n) Files[i].fs = 0;
Michael J. Spencer 1:f5ac63519541 691 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 692 } else {
Michael J. Spencer 1:f5ac63519541 693 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 694 }
Michael J. Spencer 1:f5ac63519541 695 return res;
Michael J. Spencer 1:f5ac63519541 696 }
Michael J. Spencer 1:f5ac63519541 697
Michael J. Spencer 1:f5ac63519541 698
Michael J. Spencer 1:f5ac63519541 699 static
Michael J. Spencer 1:f5ac63519541 700 void clear_lock ( /* Clear lock entries of the volume */
Michael J. Spencer 1:f5ac63519541 701 FATFS *fs
Michael J. Spencer 1:f5ac63519541 702 )
Michael J. Spencer 1:f5ac63519541 703 {
Michael J. Spencer 1:f5ac63519541 704 UINT i;
Michael J. Spencer 1:f5ac63519541 705
Michael J. Spencer 1:f5ac63519541 706 for (i = 0; i < _FS_SHARE; i++) {
Michael J. Spencer 1:f5ac63519541 707 if (Files[i].fs == fs) Files[i].fs = 0;
Michael J. Spencer 1:f5ac63519541 708 }
Michael J. Spencer 1:f5ac63519541 709 }
Michael J. Spencer 1:f5ac63519541 710 #endif
Michael J. Spencer 1:f5ac63519541 711
Michael J. Spencer 1:f5ac63519541 712
Michael J. Spencer 1:f5ac63519541 713
Michael J. Spencer 1:f5ac63519541 714 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 715 /* Change window offset */
Michael J. Spencer 1:f5ac63519541 716 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 717
Michael J. Spencer 1:f5ac63519541 718 static
Michael J. Spencer 1:f5ac63519541 719 FRESULT move_window (
Michael J. Spencer 1:f5ac63519541 720 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 721 DWORD sector /* Sector number to make appearance in the fs->win[] */
Michael J. Spencer 1:f5ac63519541 722 ) /* Move to zero only writes back dirty window */
Michael J. Spencer 1:f5ac63519541 723 {
Michael J. Spencer 1:f5ac63519541 724 DWORD wsect;
Michael J. Spencer 1:f5ac63519541 725
Michael J. Spencer 1:f5ac63519541 726
Michael J. Spencer 1:f5ac63519541 727 wsect = fs->winsect;
Michael J. Spencer 1:f5ac63519541 728 if (wsect != sector) { /* Changed current window */
Michael J. Spencer 1:f5ac63519541 729 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 730 if (fs->wflag) { /* Write back dirty window if needed */
Michael J. Spencer 1:f5ac63519541 731 if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 732 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 733 fs->wflag = 0;
Michael J. Spencer 1:f5ac63519541 734 if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
Michael J. Spencer 1:f5ac63519541 735 BYTE nf;
Michael J. Spencer 1:f5ac63519541 736 for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
Michael J. Spencer 1:f5ac63519541 737 wsect += fs->fsize;
Michael J. Spencer 1:f5ac63519541 738 disk_write(fs->drv, fs->win, wsect, 1);
Michael J. Spencer 1:f5ac63519541 739 }
Michael J. Spencer 1:f5ac63519541 740 }
Michael J. Spencer 1:f5ac63519541 741 }
Michael J. Spencer 1:f5ac63519541 742 #endif
Michael J. Spencer 1:f5ac63519541 743 if (sector) {
Michael J. Spencer 1:f5ac63519541 744 if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 745 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 746 fs->winsect = sector;
Michael J. Spencer 1:f5ac63519541 747 }
Michael J. Spencer 1:f5ac63519541 748 }
Michael J. Spencer 1:f5ac63519541 749
Michael J. Spencer 1:f5ac63519541 750 return FR_OK;
Michael J. Spencer 1:f5ac63519541 751 }
Michael J. Spencer 1:f5ac63519541 752
Michael J. Spencer 1:f5ac63519541 753
Michael J. Spencer 1:f5ac63519541 754
Michael J. Spencer 1:f5ac63519541 755
Michael J. Spencer 1:f5ac63519541 756 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 757 /* Clean-up cached data */
Michael J. Spencer 1:f5ac63519541 758 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 759 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 760 static
Michael J. Spencer 1:f5ac63519541 761 FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
Michael J. Spencer 1:f5ac63519541 762 FATFS *fs /* File system object */
Michael J. Spencer 1:f5ac63519541 763 )
Michael J. Spencer 1:f5ac63519541 764 {
Michael J. Spencer 1:f5ac63519541 765 FRESULT res;
Michael J. Spencer 1:f5ac63519541 766
Michael J. Spencer 1:f5ac63519541 767
Michael J. Spencer 1:f5ac63519541 768 res = move_window(fs, 0);
Michael J. Spencer 1:f5ac63519541 769 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 770 /* Update FSInfo sector if needed */
Michael J. Spencer 1:f5ac63519541 771 if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
Michael J. Spencer 1:f5ac63519541 772 fs->winsect = 0;
Michael J. Spencer 1:f5ac63519541 773 /* Create FSInfo structure */
Michael J. Spencer 1:f5ac63519541 774 mem_set(fs->win, 0, 512);
Michael J. Spencer 1:f5ac63519541 775 ST_WORD(fs->win+BS_55AA, 0xAA55);
Michael J. Spencer 1:f5ac63519541 776 ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
Michael J. Spencer 1:f5ac63519541 777 ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
Michael J. Spencer 1:f5ac63519541 778 ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
Michael J. Spencer 1:f5ac63519541 779 ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
Michael J. Spencer 1:f5ac63519541 780 /* Write it into the FSInfo sector */
Michael J. Spencer 1:f5ac63519541 781 disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
Michael J. Spencer 1:f5ac63519541 782 fs->fsi_flag = 0;
Michael J. Spencer 1:f5ac63519541 783 }
Michael J. Spencer 1:f5ac63519541 784 /* Make sure that no pending write process in the physical drive */
Michael J. Spencer 1:f5ac63519541 785 if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
Michael J. Spencer 1:f5ac63519541 786 res = FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 787 }
Michael J. Spencer 1:f5ac63519541 788
Michael J. Spencer 1:f5ac63519541 789 return res;
Michael J. Spencer 1:f5ac63519541 790 }
Michael J. Spencer 1:f5ac63519541 791 #endif
Michael J. Spencer 1:f5ac63519541 792
Michael J. Spencer 1:f5ac63519541 793
Michael J. Spencer 1:f5ac63519541 794
Michael J. Spencer 1:f5ac63519541 795
Michael J. Spencer 1:f5ac63519541 796 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 797 /* Get sector# from cluster# */
Michael J. Spencer 1:f5ac63519541 798 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 799
Michael J. Spencer 1:f5ac63519541 800
Michael J. Spencer 1:f5ac63519541 801 DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
Michael J. Spencer 1:f5ac63519541 802 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 803 DWORD clst /* Cluster# to be converted */
Michael J. Spencer 1:f5ac63519541 804 )
Michael J. Spencer 1:f5ac63519541 805 {
Michael J. Spencer 1:f5ac63519541 806 clst -= 2;
Michael J. Spencer 1:f5ac63519541 807 if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
Michael J. Spencer 1:f5ac63519541 808 return clst * fs->csize + fs->database;
Michael J. Spencer 1:f5ac63519541 809 }
Michael J. Spencer 1:f5ac63519541 810
Michael J. Spencer 1:f5ac63519541 811
Michael J. Spencer 1:f5ac63519541 812
Michael J. Spencer 1:f5ac63519541 813
Michael J. Spencer 1:f5ac63519541 814 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 815 /* FAT access - Read value of a FAT entry */
Michael J. Spencer 1:f5ac63519541 816 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 817
Michael J. Spencer 1:f5ac63519541 818
Michael J. Spencer 1:f5ac63519541 819 DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
Michael J. Spencer 1:f5ac63519541 820 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 821 DWORD clst /* Cluster# to get the link information */
Michael J. Spencer 1:f5ac63519541 822 )
Michael J. Spencer 1:f5ac63519541 823 {
Michael J. Spencer 1:f5ac63519541 824 UINT wc, bc;
Michael J. Spencer 1:f5ac63519541 825 BYTE *p;
Michael J. Spencer 1:f5ac63519541 826
Michael J. Spencer 1:f5ac63519541 827
Michael J. Spencer 1:f5ac63519541 828 if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
Michael J. Spencer 1:f5ac63519541 829 return 1;
Michael J. Spencer 1:f5ac63519541 830
Michael J. Spencer 1:f5ac63519541 831 switch (fs->fs_type) {
Michael J. Spencer 1:f5ac63519541 832 case FS_FAT12 :
Michael J. Spencer 1:f5ac63519541 833 bc = (UINT)clst; bc += bc / 2;
Michael J. Spencer 1:f5ac63519541 834 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
Michael J. Spencer 1:f5ac63519541 835 wc = fs->win[bc % SS(fs)]; bc++;
Michael J. Spencer 1:f5ac63519541 836 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
Michael J. Spencer 1:f5ac63519541 837 wc |= fs->win[bc % SS(fs)] << 8;
Michael J. Spencer 1:f5ac63519541 838 return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
Michael J. Spencer 1:f5ac63519541 839
Michael J. Spencer 1:f5ac63519541 840 case FS_FAT16 :
Michael J. Spencer 1:f5ac63519541 841 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
Michael J. Spencer 1:f5ac63519541 842 p = &fs->win[clst * 2 % SS(fs)];
Michael J. Spencer 1:f5ac63519541 843 return LD_WORD(p);
Michael J. Spencer 1:f5ac63519541 844
Michael J. Spencer 1:f5ac63519541 845 case FS_FAT32 :
Michael J. Spencer 1:f5ac63519541 846 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
Michael J. Spencer 1:f5ac63519541 847 p = &fs->win[clst * 4 % SS(fs)];
Michael J. Spencer 1:f5ac63519541 848 return LD_DWORD(p) & 0x0FFFFFFF;
Michael J. Spencer 1:f5ac63519541 849 }
Michael J. Spencer 1:f5ac63519541 850
Michael J. Spencer 1:f5ac63519541 851 return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
Michael J. Spencer 1:f5ac63519541 852 }
Michael J. Spencer 1:f5ac63519541 853
Michael J. Spencer 1:f5ac63519541 854
Michael J. Spencer 1:f5ac63519541 855
Michael J. Spencer 1:f5ac63519541 856
Michael J. Spencer 1:f5ac63519541 857 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 858 /* FAT access - Change value of a FAT entry */
Michael J. Spencer 1:f5ac63519541 859 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 860 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 861
Michael J. Spencer 1:f5ac63519541 862 FRESULT put_fat (
Michael J. Spencer 1:f5ac63519541 863 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 864 DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
Michael J. Spencer 1:f5ac63519541 865 DWORD val /* New value to mark the cluster */
Michael J. Spencer 1:f5ac63519541 866 )
Michael J. Spencer 1:f5ac63519541 867 {
Michael J. Spencer 1:f5ac63519541 868 UINT bc;
Michael J. Spencer 1:f5ac63519541 869 BYTE *p;
Michael J. Spencer 1:f5ac63519541 870 FRESULT res;
Michael J. Spencer 1:f5ac63519541 871
Michael J. Spencer 1:f5ac63519541 872
Michael J. Spencer 1:f5ac63519541 873 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
Michael J. Spencer 1:f5ac63519541 874 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 875
Michael J. Spencer 1:f5ac63519541 876 } else {
Michael J. Spencer 1:f5ac63519541 877 switch (fs->fs_type) {
Michael J. Spencer 1:f5ac63519541 878 case FS_FAT12 :
Michael J. Spencer 1:f5ac63519541 879 bc = clst; bc += bc / 2;
Michael J. Spencer 1:f5ac63519541 880 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
Michael J. Spencer 1:f5ac63519541 881 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 882 p = &fs->win[bc % SS(fs)];
Michael J. Spencer 1:f5ac63519541 883 *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
Michael J. Spencer 1:f5ac63519541 884 bc++;
Michael J. Spencer 1:f5ac63519541 885 fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 886 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
Michael J. Spencer 1:f5ac63519541 887 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 888 p = &fs->win[bc % SS(fs)];
Michael J. Spencer 1:f5ac63519541 889 *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
Michael J. Spencer 1:f5ac63519541 890 break;
Michael J. Spencer 1:f5ac63519541 891
Michael J. Spencer 1:f5ac63519541 892 case FS_FAT16 :
Michael J. Spencer 1:f5ac63519541 893 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
Michael J. Spencer 1:f5ac63519541 894 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 895 p = &fs->win[clst * 2 % SS(fs)];
Michael J. Spencer 1:f5ac63519541 896 ST_WORD(p, (WORD)val);
Michael J. Spencer 1:f5ac63519541 897 break;
Michael J. Spencer 1:f5ac63519541 898
Michael J. Spencer 1:f5ac63519541 899 case FS_FAT32 :
Michael J. Spencer 1:f5ac63519541 900 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
Michael J. Spencer 1:f5ac63519541 901 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 902 p = &fs->win[clst * 4 % SS(fs)];
Michael J. Spencer 1:f5ac63519541 903 val |= LD_DWORD(p) & 0xF0000000;
Michael J. Spencer 1:f5ac63519541 904 ST_DWORD(p, val);
Michael J. Spencer 1:f5ac63519541 905 break;
Michael J. Spencer 1:f5ac63519541 906
Michael J. Spencer 1:f5ac63519541 907 default :
Michael J. Spencer 1:f5ac63519541 908 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 909 }
Michael J. Spencer 1:f5ac63519541 910 fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 911 }
Michael J. Spencer 1:f5ac63519541 912
Michael J. Spencer 1:f5ac63519541 913 return res;
Michael J. Spencer 1:f5ac63519541 914 }
Michael J. Spencer 1:f5ac63519541 915 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 916
Michael J. Spencer 1:f5ac63519541 917
Michael J. Spencer 1:f5ac63519541 918
Michael J. Spencer 1:f5ac63519541 919
Michael J. Spencer 1:f5ac63519541 920 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 921 /* FAT handling - Remove a cluster chain */
Michael J. Spencer 1:f5ac63519541 922 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 923 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 924 static
Michael J. Spencer 1:f5ac63519541 925 FRESULT remove_chain (
Michael J. Spencer 1:f5ac63519541 926 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 927 DWORD clst /* Cluster# to remove a chain from */
Michael J. Spencer 1:f5ac63519541 928 )
Michael J. Spencer 1:f5ac63519541 929 {
Michael J. Spencer 1:f5ac63519541 930 FRESULT res;
Michael J. Spencer 1:f5ac63519541 931 DWORD nxt;
Michael J. Spencer 1:f5ac63519541 932 #if _USE_ERASE
Michael J. Spencer 1:f5ac63519541 933 DWORD scl = clst, ecl = clst, resion[2];
Michael J. Spencer 1:f5ac63519541 934 #endif
Michael J. Spencer 1:f5ac63519541 935
Michael J. Spencer 1:f5ac63519541 936 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
Michael J. Spencer 1:f5ac63519541 937 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 938
Michael J. Spencer 1:f5ac63519541 939 } else {
Michael J. Spencer 1:f5ac63519541 940 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 941 while (clst < fs->n_fatent) { /* Not a last link? */
Michael J. Spencer 1:f5ac63519541 942 nxt = get_fat(fs, clst); /* Get cluster status */
Michael J. Spencer 1:f5ac63519541 943 if (nxt == 0) break; /* Empty cluster? */
Michael J. Spencer 1:f5ac63519541 944 if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
Michael J. Spencer 1:f5ac63519541 945 if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
Michael J. Spencer 1:f5ac63519541 946 res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
Michael J. Spencer 1:f5ac63519541 947 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 948 if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
Michael J. Spencer 1:f5ac63519541 949 fs->free_clust++;
Michael J. Spencer 1:f5ac63519541 950 fs->fsi_flag = 1;
Michael J. Spencer 1:f5ac63519541 951 }
Michael J. Spencer 1:f5ac63519541 952 #if _USE_ERASE
Michael J. Spencer 1:f5ac63519541 953 if (ecl + 1 == nxt) { /* Next cluster is contiguous */
Michael J. Spencer 1:f5ac63519541 954 ecl = nxt;
Michael J. Spencer 1:f5ac63519541 955 } else { /* End of contiguous clusters */
Michael J. Spencer 1:f5ac63519541 956 resion[0] = clust2sect(fs, scl); /* Start sector */
Michael J. Spencer 1:f5ac63519541 957 resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
Michael J. Spencer 1:f5ac63519541 958 disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */
Michael J. Spencer 1:f5ac63519541 959 scl = ecl = nxt;
Michael J. Spencer 1:f5ac63519541 960 }
Michael J. Spencer 1:f5ac63519541 961 #endif
Michael J. Spencer 1:f5ac63519541 962 clst = nxt; /* Next cluster */
Michael J. Spencer 1:f5ac63519541 963 }
Michael J. Spencer 1:f5ac63519541 964 }
Michael J. Spencer 1:f5ac63519541 965
Michael J. Spencer 1:f5ac63519541 966 return res;
Michael J. Spencer 1:f5ac63519541 967 }
Michael J. Spencer 1:f5ac63519541 968 #endif
Michael J. Spencer 1:f5ac63519541 969
Michael J. Spencer 1:f5ac63519541 970
Michael J. Spencer 1:f5ac63519541 971
Michael J. Spencer 1:f5ac63519541 972
Michael J. Spencer 1:f5ac63519541 973 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 974 /* FAT handling - Stretch or Create a cluster chain */
Michael J. Spencer 1:f5ac63519541 975 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 976 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 977 static
Michael J. Spencer 1:f5ac63519541 978 DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
Michael J. Spencer 1:f5ac63519541 979 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 980 DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
Michael J. Spencer 1:f5ac63519541 981 )
Michael J. Spencer 1:f5ac63519541 982 {
Michael J. Spencer 1:f5ac63519541 983 DWORD cs, ncl, scl;
Michael J. Spencer 1:f5ac63519541 984 FRESULT res;
Michael J. Spencer 1:f5ac63519541 985
Michael J. Spencer 1:f5ac63519541 986
Michael J. Spencer 1:f5ac63519541 987 if (clst == 0) { /* Create a new chain */
Michael J. Spencer 1:f5ac63519541 988 scl = fs->last_clust; /* Get suggested start point */
Michael J. Spencer 1:f5ac63519541 989 if (!scl || scl >= fs->n_fatent) scl = 1;
Michael J. Spencer 1:f5ac63519541 990 }
Michael J. Spencer 1:f5ac63519541 991 else { /* Stretch the current chain */
Michael J. Spencer 1:f5ac63519541 992 cs = get_fat(fs, clst); /* Check the cluster status */
Michael J. Spencer 1:f5ac63519541 993 if (cs < 2) return 1; /* It is an invalid cluster */
Michael J. Spencer 1:f5ac63519541 994 if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
Michael J. Spencer 1:f5ac63519541 995 scl = clst;
Michael J. Spencer 1:f5ac63519541 996 }
Michael J. Spencer 1:f5ac63519541 997
Michael J. Spencer 1:f5ac63519541 998 ncl = scl; /* Start cluster */
Michael J. Spencer 1:f5ac63519541 999 for (;;) {
Michael J. Spencer 1:f5ac63519541 1000 ncl++; /* Next cluster */
Michael J. Spencer 1:f5ac63519541 1001 if (ncl >= fs->n_fatent) { /* Wrap around */
Michael J. Spencer 1:f5ac63519541 1002 ncl = 2;
Michael J. Spencer 1:f5ac63519541 1003 if (ncl > scl) return 0; /* No free cluster */
Michael J. Spencer 1:f5ac63519541 1004 }
Michael J. Spencer 1:f5ac63519541 1005 cs = get_fat(fs, ncl); /* Get the cluster status */
Michael J. Spencer 1:f5ac63519541 1006 if (cs == 0) break; /* Found a free cluster */
Michael J. Spencer 1:f5ac63519541 1007 if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
Michael J. Spencer 1:f5ac63519541 1008 return cs;
Michael J. Spencer 1:f5ac63519541 1009 if (ncl == scl) return 0; /* No free cluster */
Michael J. Spencer 1:f5ac63519541 1010 }
Michael J. Spencer 1:f5ac63519541 1011
Michael J. Spencer 1:f5ac63519541 1012 res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
Michael J. Spencer 1:f5ac63519541 1013 if (res == FR_OK && clst != 0) {
Michael J. Spencer 1:f5ac63519541 1014 res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
Michael J. Spencer 1:f5ac63519541 1015 }
Michael J. Spencer 1:f5ac63519541 1016 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1017 fs->last_clust = ncl; /* Update FSINFO */
Michael J. Spencer 1:f5ac63519541 1018 if (fs->free_clust != 0xFFFFFFFF) {
Michael J. Spencer 1:f5ac63519541 1019 fs->free_clust--;
Michael J. Spencer 1:f5ac63519541 1020 fs->fsi_flag = 1;
Michael J. Spencer 1:f5ac63519541 1021 }
Michael J. Spencer 1:f5ac63519541 1022 } else {
Michael J. Spencer 1:f5ac63519541 1023 ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
Michael J. Spencer 1:f5ac63519541 1024 }
Michael J. Spencer 1:f5ac63519541 1025
Michael J. Spencer 1:f5ac63519541 1026 return ncl; /* Return new cluster number or error code */
Michael J. Spencer 1:f5ac63519541 1027 }
Michael J. Spencer 1:f5ac63519541 1028 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 1029
Michael J. Spencer 1:f5ac63519541 1030
Michael J. Spencer 1:f5ac63519541 1031
Michael J. Spencer 1:f5ac63519541 1032 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1033 /* FAT handling - Convert offset into cluster with link map table */
Michael J. Spencer 1:f5ac63519541 1034 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1035
Michael J. Spencer 1:f5ac63519541 1036 #if _USE_FASTSEEK
Michael J. Spencer 1:f5ac63519541 1037 static
Michael J. Spencer 1:f5ac63519541 1038 DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
Michael J. Spencer 1:f5ac63519541 1039 FIL* fp, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 1040 DWORD ofs /* File offset to be converted to cluster# */
Michael J. Spencer 1:f5ac63519541 1041 )
Michael J. Spencer 1:f5ac63519541 1042 {
Michael J. Spencer 1:f5ac63519541 1043 DWORD cl, ncl, *tbl;
Michael J. Spencer 1:f5ac63519541 1044
Michael J. Spencer 1:f5ac63519541 1045
Michael J. Spencer 1:f5ac63519541 1046 tbl = fp->cltbl + 1; /* Top of CLMT */
Michael J. Spencer 1:f5ac63519541 1047 cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
Michael J. Spencer 1:f5ac63519541 1048 for (;;) {
Michael J. Spencer 1:f5ac63519541 1049 ncl = *tbl++; /* Number of cluters in the fragment */
Michael J. Spencer 1:f5ac63519541 1050 if (!ncl) return 0; /* End of table? (error) */
Michael J. Spencer 1:f5ac63519541 1051 if (cl < ncl) break; /* In this fragment? */
Michael J. Spencer 1:f5ac63519541 1052 cl -= ncl; tbl++; /* Next fragment */
Michael J. Spencer 1:f5ac63519541 1053 }
Michael J. Spencer 1:f5ac63519541 1054 return cl + *tbl; /* Return the cluster number */
Michael J. Spencer 1:f5ac63519541 1055 }
Michael J. Spencer 1:f5ac63519541 1056 #endif /* _USE_FASTSEEK */
Michael J. Spencer 1:f5ac63519541 1057
Michael J. Spencer 1:f5ac63519541 1058
Michael J. Spencer 1:f5ac63519541 1059
Michael J. Spencer 1:f5ac63519541 1060 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1061 /* Directory handling - Set directory index */
Michael J. Spencer 1:f5ac63519541 1062 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1063
Michael J. Spencer 1:f5ac63519541 1064 static
Michael J. Spencer 1:f5ac63519541 1065 FRESULT dir_sdi (
Michael J. Spencer 1:f5ac63519541 1066 FATFS_DIR *dj, /* Pointer to directory object */
Michael J. Spencer 1:f5ac63519541 1067 WORD idx /* Directory index number */
Michael J. Spencer 1:f5ac63519541 1068 )
Michael J. Spencer 1:f5ac63519541 1069 {
Michael J. Spencer 1:f5ac63519541 1070 DWORD clst;
Michael J. Spencer 1:f5ac63519541 1071 WORD ic;
Michael J. Spencer 1:f5ac63519541 1072
Michael J. Spencer 1:f5ac63519541 1073
Michael J. Spencer 1:f5ac63519541 1074 dj->index = idx;
Michael J. Spencer 1:f5ac63519541 1075 clst = dj->sclust;
Michael J. Spencer 1:f5ac63519541 1076 if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
Michael J. Spencer 1:f5ac63519541 1077 return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1078 if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
Michael J. Spencer 1:f5ac63519541 1079 clst = dj->fs->dirbase;
Michael J. Spencer 1:f5ac63519541 1080
Michael J. Spencer 1:f5ac63519541 1081 if (clst == 0) { /* Static table (root-dir in FAT12/16) */
Michael J. Spencer 1:f5ac63519541 1082 dj->clust = clst;
Michael J. Spencer 1:f5ac63519541 1083 if (idx >= dj->fs->n_rootdir) /* Index is out of range */
Michael J. Spencer 1:f5ac63519541 1084 return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1085 dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
Michael J. Spencer 1:f5ac63519541 1086 }
Michael J. Spencer 1:f5ac63519541 1087 else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
Michael J. Spencer 1:f5ac63519541 1088 ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
Michael J. Spencer 1:f5ac63519541 1089 while (idx >= ic) { /* Follow cluster chain */
Michael J. Spencer 1:f5ac63519541 1090 clst = get_fat(dj->fs, clst); /* Get next cluster */
Michael J. Spencer 1:f5ac63519541 1091 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
Michael J. Spencer 1:f5ac63519541 1092 if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
Michael J. Spencer 1:f5ac63519541 1093 return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1094 idx -= ic;
Michael J. Spencer 1:f5ac63519541 1095 }
Michael J. Spencer 1:f5ac63519541 1096 dj->clust = clst;
Michael J. Spencer 1:f5ac63519541 1097 dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
Michael J. Spencer 1:f5ac63519541 1098 }
Michael J. Spencer 1:f5ac63519541 1099
Michael J. Spencer 1:f5ac63519541 1100 dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
Michael J. Spencer 1:f5ac63519541 1101
Michael J. Spencer 1:f5ac63519541 1102 return FR_OK; /* Seek succeeded */
Michael J. Spencer 1:f5ac63519541 1103 }
Michael J. Spencer 1:f5ac63519541 1104
Michael J. Spencer 1:f5ac63519541 1105
Michael J. Spencer 1:f5ac63519541 1106
Michael J. Spencer 1:f5ac63519541 1107
Michael J. Spencer 1:f5ac63519541 1108 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1109 /* Directory handling - Move directory index next */
Michael J. Spencer 1:f5ac63519541 1110 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1111
Michael J. Spencer 1:f5ac63519541 1112 static
Michael J. Spencer 1:f5ac63519541 1113 FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
Michael J. Spencer 1:f5ac63519541 1114 FATFS_DIR *dj, /* Pointer to directory object */
Michael J. Spencer 1:f5ac63519541 1115 int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
Michael J. Spencer 1:f5ac63519541 1116 )
Michael J. Spencer 1:f5ac63519541 1117 {
Michael J. Spencer 1:f5ac63519541 1118 DWORD clst;
Michael J. Spencer 1:f5ac63519541 1119 WORD i;
Michael J. Spencer 1:f5ac63519541 1120
Michael J. Spencer 1:f5ac63519541 1121
Michael J. Spencer 1:f5ac63519541 1122 stretch = stretch; /* To suppress warning on read-only cfg. */
Michael J. Spencer 1:f5ac63519541 1123 i = dj->index + 1;
Michael J. Spencer 1:f5ac63519541 1124 if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
Michael J. Spencer 1:f5ac63519541 1125 return FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 1126
Michael J. Spencer 1:f5ac63519541 1127 if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
Michael J. Spencer 1:f5ac63519541 1128 dj->sect++; /* Next sector */
Michael J. Spencer 1:f5ac63519541 1129
Michael J. Spencer 1:f5ac63519541 1130 if (dj->clust == 0) { /* Static table */
Michael J. Spencer 1:f5ac63519541 1131 if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
Michael J. Spencer 1:f5ac63519541 1132 return FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 1133 }
Michael J. Spencer 1:f5ac63519541 1134 else { /* Dynamic table */
Michael J. Spencer 1:f5ac63519541 1135 if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
Michael J. Spencer 1:f5ac63519541 1136 clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
Michael J. Spencer 1:f5ac63519541 1137 if (clst <= 1) return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1138 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 1139 if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
Michael J. Spencer 1:f5ac63519541 1140 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 1141 BYTE c;
Michael J. Spencer 1:f5ac63519541 1142 if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
Michael J. Spencer 1:f5ac63519541 1143 clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
Michael J. Spencer 1:f5ac63519541 1144 if (clst == 0) return FR_DENIED; /* No free cluster */
Michael J. Spencer 1:f5ac63519541 1145 if (clst == 1) return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1146 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 1147 /* Clean-up stretched table */
Michael J. Spencer 1:f5ac63519541 1148 if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
Michael J. Spencer 1:f5ac63519541 1149 mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
Michael J. Spencer 1:f5ac63519541 1150 dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
Michael J. Spencer 1:f5ac63519541 1151 for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
Michael J. Spencer 1:f5ac63519541 1152 dj->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 1153 if (move_window(dj->fs, 0)) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 1154 dj->fs->winsect++;
Michael J. Spencer 1:f5ac63519541 1155 }
Michael J. Spencer 1:f5ac63519541 1156 dj->fs->winsect -= c; /* Rewind window address */
Michael J. Spencer 1:f5ac63519541 1157 #else
Michael J. Spencer 1:f5ac63519541 1158 return FR_NO_FILE; /* Report EOT */
Michael J. Spencer 1:f5ac63519541 1159 #endif
Michael J. Spencer 1:f5ac63519541 1160 }
Michael J. Spencer 1:f5ac63519541 1161 dj->clust = clst; /* Initialize data for new cluster */
Michael J. Spencer 1:f5ac63519541 1162 dj->sect = clust2sect(dj->fs, clst);
Michael J. Spencer 1:f5ac63519541 1163 }
Michael J. Spencer 1:f5ac63519541 1164 }
Michael J. Spencer 1:f5ac63519541 1165 }
Michael J. Spencer 1:f5ac63519541 1166
Michael J. Spencer 1:f5ac63519541 1167 dj->index = i;
Michael J. Spencer 1:f5ac63519541 1168 dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
Michael J. Spencer 1:f5ac63519541 1169
Michael J. Spencer 1:f5ac63519541 1170 return FR_OK;
Michael J. Spencer 1:f5ac63519541 1171 }
Michael J. Spencer 1:f5ac63519541 1172
Michael J. Spencer 1:f5ac63519541 1173
Michael J. Spencer 1:f5ac63519541 1174
Michael J. Spencer 1:f5ac63519541 1175
Michael J. Spencer 1:f5ac63519541 1176 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1177 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
Michael J. Spencer 1:f5ac63519541 1178 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1179 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1180 static
Michael J. Spencer 1:f5ac63519541 1181 const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
Michael J. Spencer 1:f5ac63519541 1182
Michael J. Spencer 1:f5ac63519541 1183
Michael J. Spencer 1:f5ac63519541 1184 static
Michael J. Spencer 1:f5ac63519541 1185 int cmp_lfn ( /* 1:Matched, 0:Not matched */
Michael J. Spencer 1:f5ac63519541 1186 WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
Michael J. Spencer 1:f5ac63519541 1187 BYTE *dir /* Pointer to the directory entry containing a part of LFN */
Michael J. Spencer 1:f5ac63519541 1188 )
Michael J. Spencer 1:f5ac63519541 1189 {
Michael J. Spencer 1:f5ac63519541 1190 UINT i, s;
Michael J. Spencer 1:f5ac63519541 1191 WCHAR wc, uc;
Michael J. Spencer 1:f5ac63519541 1192
Michael J. Spencer 1:f5ac63519541 1193
Michael J. Spencer 1:f5ac63519541 1194 i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
Michael J. Spencer 1:f5ac63519541 1195 s = 0; wc = 1;
Michael J. Spencer 1:f5ac63519541 1196 do {
Michael J. Spencer 1:f5ac63519541 1197 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
Michael J. Spencer 1:f5ac63519541 1198 if (wc) { /* Last char has not been processed */
Michael J. Spencer 1:f5ac63519541 1199 wc = ff_wtoupper(uc); /* Convert it to upper case */
Michael J. Spencer 1:f5ac63519541 1200 if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
Michael J. Spencer 1:f5ac63519541 1201 return 0; /* Not matched */
Michael J. Spencer 1:f5ac63519541 1202 } else {
Michael J. Spencer 1:f5ac63519541 1203 if (uc != 0xFFFF) return 0; /* Check filler */
Michael J. Spencer 1:f5ac63519541 1204 }
Michael J. Spencer 1:f5ac63519541 1205 } while (++s < 13); /* Repeat until all chars in the entry are checked */
Michael J. Spencer 1:f5ac63519541 1206
Michael J. Spencer 1:f5ac63519541 1207 if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
Michael J. Spencer 1:f5ac63519541 1208 return 0;
Michael J. Spencer 1:f5ac63519541 1209
Michael J. Spencer 1:f5ac63519541 1210 return 1; /* The part of LFN matched */
Michael J. Spencer 1:f5ac63519541 1211 }
Michael J. Spencer 1:f5ac63519541 1212
Michael J. Spencer 1:f5ac63519541 1213
Michael J. Spencer 1:f5ac63519541 1214
Michael J. Spencer 1:f5ac63519541 1215 static
Michael J. Spencer 1:f5ac63519541 1216 int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
Michael J. Spencer 1:f5ac63519541 1217 WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
Michael J. Spencer 1:f5ac63519541 1218 BYTE *dir /* Pointer to the directory entry */
Michael J. Spencer 1:f5ac63519541 1219 )
Michael J. Spencer 1:f5ac63519541 1220 {
Michael J. Spencer 1:f5ac63519541 1221 UINT i, s;
Michael J. Spencer 1:f5ac63519541 1222 WCHAR wc, uc;
Michael J. Spencer 1:f5ac63519541 1223
Michael J. Spencer 1:f5ac63519541 1224
Michael J. Spencer 1:f5ac63519541 1225 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
Michael J. Spencer 1:f5ac63519541 1226
Michael J. Spencer 1:f5ac63519541 1227 s = 0; wc = 1;
Michael J. Spencer 1:f5ac63519541 1228 do {
Michael J. Spencer 1:f5ac63519541 1229 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
Michael J. Spencer 1:f5ac63519541 1230 if (wc) { /* Last char has not been processed */
Michael J. Spencer 1:f5ac63519541 1231 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
Michael J. Spencer 1:f5ac63519541 1232 lfnbuf[i++] = wc = uc; /* Store it */
Michael J. Spencer 1:f5ac63519541 1233 } else {
Michael J. Spencer 1:f5ac63519541 1234 if (uc != 0xFFFF) return 0; /* Check filler */
Michael J. Spencer 1:f5ac63519541 1235 }
Michael J. Spencer 1:f5ac63519541 1236 } while (++s < 13); /* Read all character in the entry */
Michael J. Spencer 1:f5ac63519541 1237
Michael J. Spencer 1:f5ac63519541 1238 if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
Michael J. Spencer 1:f5ac63519541 1239 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
Michael J. Spencer 1:f5ac63519541 1240 lfnbuf[i] = 0;
Michael J. Spencer 1:f5ac63519541 1241 }
Michael J. Spencer 1:f5ac63519541 1242
Michael J. Spencer 1:f5ac63519541 1243 return 1;
Michael J. Spencer 1:f5ac63519541 1244 }
Michael J. Spencer 1:f5ac63519541 1245
Michael J. Spencer 1:f5ac63519541 1246
Michael J. Spencer 1:f5ac63519541 1247 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 1248 static
Michael J. Spencer 1:f5ac63519541 1249 void fit_lfn (
Michael J. Spencer 1:f5ac63519541 1250 const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
Michael J. Spencer 1:f5ac63519541 1251 BYTE *dir, /* Pointer to the directory entry */
Michael J. Spencer 1:f5ac63519541 1252 BYTE ord, /* LFN order (1-20) */
Michael J. Spencer 1:f5ac63519541 1253 BYTE sum /* SFN sum */
Michael J. Spencer 1:f5ac63519541 1254 )
Michael J. Spencer 1:f5ac63519541 1255 {
Michael J. Spencer 1:f5ac63519541 1256 UINT i, s;
Michael J. Spencer 1:f5ac63519541 1257 WCHAR wc;
Michael J. Spencer 1:f5ac63519541 1258
Michael J. Spencer 1:f5ac63519541 1259
Michael J. Spencer 1:f5ac63519541 1260 dir[LDIR_Chksum] = sum; /* Set check sum */
Michael J. Spencer 1:f5ac63519541 1261 dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
Michael J. Spencer 1:f5ac63519541 1262 dir[LDIR_Type] = 0;
Michael J. Spencer 1:f5ac63519541 1263 ST_WORD(dir+LDIR_FstClusLO, 0);
Michael J. Spencer 1:f5ac63519541 1264
Michael J. Spencer 1:f5ac63519541 1265 i = (ord - 1) * 13; /* Get offset in the LFN buffer */
Michael J. Spencer 1:f5ac63519541 1266 s = wc = 0;
Michael J. Spencer 1:f5ac63519541 1267 do {
Michael J. Spencer 1:f5ac63519541 1268 if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
Michael J. Spencer 1:f5ac63519541 1269 ST_WORD(dir+LfnOfs[s], wc); /* Put it */
Michael J. Spencer 1:f5ac63519541 1270 if (!wc) wc = 0xFFFF; /* Padding chars following last char */
Michael J. Spencer 1:f5ac63519541 1271 } while (++s < 13);
Michael J. Spencer 1:f5ac63519541 1272 if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */
Michael J. Spencer 1:f5ac63519541 1273 dir[LDIR_Ord] = ord; /* Set the LFN order */
Michael J. Spencer 1:f5ac63519541 1274 }
Michael J. Spencer 1:f5ac63519541 1275
Michael J. Spencer 1:f5ac63519541 1276 #endif
Michael J. Spencer 1:f5ac63519541 1277 #endif
Michael J. Spencer 1:f5ac63519541 1278
Michael J. Spencer 1:f5ac63519541 1279
Michael J. Spencer 1:f5ac63519541 1280
Michael J. Spencer 1:f5ac63519541 1281 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1282 /* Create numbered name */
Michael J. Spencer 1:f5ac63519541 1283 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1284 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1285 void gen_numname (
Michael J. Spencer 1:f5ac63519541 1286 BYTE *dst, /* Pointer to generated SFN */
Michael J. Spencer 1:f5ac63519541 1287 const BYTE *src, /* Pointer to source SFN to be modified */
Michael J. Spencer 1:f5ac63519541 1288 const WCHAR *lfn, /* Pointer to LFN */
Michael J. Spencer 1:f5ac63519541 1289 WORD seq /* Sequence number */
Michael J. Spencer 1:f5ac63519541 1290 )
Michael J. Spencer 1:f5ac63519541 1291 {
Michael J. Spencer 1:f5ac63519541 1292 BYTE ns[8], c;
Michael J. Spencer 1:f5ac63519541 1293 UINT i, j;
Michael J. Spencer 1:f5ac63519541 1294
Michael J. Spencer 1:f5ac63519541 1295
Michael J. Spencer 1:f5ac63519541 1296 mem_cpy(dst, src, 11);
Michael J. Spencer 1:f5ac63519541 1297
Michael J. Spencer 1:f5ac63519541 1298 if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
Michael J. Spencer 1:f5ac63519541 1299 do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
Michael J. Spencer 1:f5ac63519541 1300 }
Michael J. Spencer 1:f5ac63519541 1301
Michael J. Spencer 1:f5ac63519541 1302 /* itoa (hexdecimal) */
Michael J. Spencer 1:f5ac63519541 1303 i = 7;
Michael J. Spencer 1:f5ac63519541 1304 do {
Michael J. Spencer 1:f5ac63519541 1305 c = (seq % 16) + '0';
Michael J. Spencer 1:f5ac63519541 1306 if (c > '9') c += 7;
Michael J. Spencer 1:f5ac63519541 1307 ns[i--] = c;
Michael J. Spencer 1:f5ac63519541 1308 seq /= 16;
Michael J. Spencer 1:f5ac63519541 1309 } while (seq);
Michael J. Spencer 1:f5ac63519541 1310 ns[i] = '~';
Michael J. Spencer 1:f5ac63519541 1311
Michael J. Spencer 1:f5ac63519541 1312 /* Append the number */
Michael J. Spencer 1:f5ac63519541 1313 for (j = 0; j < i && dst[j] != ' '; j++) {
Michael J. Spencer 1:f5ac63519541 1314 if (IsDBCS1(dst[j])) {
Michael J. Spencer 1:f5ac63519541 1315 if (j == i - 1) break;
Michael J. Spencer 1:f5ac63519541 1316 j++;
Michael J. Spencer 1:f5ac63519541 1317 }
Michael J. Spencer 1:f5ac63519541 1318 }
Michael J. Spencer 1:f5ac63519541 1319 do {
Michael J. Spencer 1:f5ac63519541 1320 dst[j++] = (i < 8) ? ns[i++] : ' ';
Michael J. Spencer 1:f5ac63519541 1321 } while (j < 8);
Michael J. Spencer 1:f5ac63519541 1322 }
Michael J. Spencer 1:f5ac63519541 1323 #endif
Michael J. Spencer 1:f5ac63519541 1324
Michael J. Spencer 1:f5ac63519541 1325
Michael J. Spencer 1:f5ac63519541 1326
Michael J. Spencer 1:f5ac63519541 1327
Michael J. Spencer 1:f5ac63519541 1328 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1329 /* Calculate sum of an SFN */
Michael J. Spencer 1:f5ac63519541 1330 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1331 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1332 static
Michael J. Spencer 1:f5ac63519541 1333 BYTE sum_sfn (
Michael J. Spencer 1:f5ac63519541 1334 const BYTE *dir /* Ptr to directory entry */
Michael J. Spencer 1:f5ac63519541 1335 )
Michael J. Spencer 1:f5ac63519541 1336 {
Michael J. Spencer 1:f5ac63519541 1337 BYTE sum = 0;
Michael J. Spencer 1:f5ac63519541 1338 UINT n = 11;
Michael J. Spencer 1:f5ac63519541 1339
Michael J. Spencer 1:f5ac63519541 1340 do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
Michael J. Spencer 1:f5ac63519541 1341 return sum;
Michael J. Spencer 1:f5ac63519541 1342 }
Michael J. Spencer 1:f5ac63519541 1343 #endif
Michael J. Spencer 1:f5ac63519541 1344
Michael J. Spencer 1:f5ac63519541 1345
Michael J. Spencer 1:f5ac63519541 1346
Michael J. Spencer 1:f5ac63519541 1347
Michael J. Spencer 1:f5ac63519541 1348 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1349 /* Directory handling - Find an object in the directory */
Michael J. Spencer 1:f5ac63519541 1350 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1351
Michael J. Spencer 1:f5ac63519541 1352 static
Michael J. Spencer 1:f5ac63519541 1353 FRESULT dir_find (
Michael J. Spencer 1:f5ac63519541 1354 FATFS_DIR *dj /* Pointer to the directory object linked to the file name */
Michael J. Spencer 1:f5ac63519541 1355 )
Michael J. Spencer 1:f5ac63519541 1356 {
Michael J. Spencer 1:f5ac63519541 1357 FRESULT res;
Michael J. Spencer 1:f5ac63519541 1358 BYTE c, *dir;
Michael J. Spencer 1:f5ac63519541 1359 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1360 BYTE a, ord, sum;
Michael J. Spencer 1:f5ac63519541 1361 #endif
Michael J. Spencer 1:f5ac63519541 1362
Michael J. Spencer 1:f5ac63519541 1363 res = dir_sdi(dj, 0); /* Rewind directory object */
Michael J. Spencer 1:f5ac63519541 1364 if (res != FR_OK) return res;
Michael J. Spencer 1:f5ac63519541 1365
Michael J. Spencer 1:f5ac63519541 1366 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1367 ord = sum = 0xFF;
Michael J. Spencer 1:f5ac63519541 1368 #endif
Michael J. Spencer 1:f5ac63519541 1369 do {
Michael J. Spencer 1:f5ac63519541 1370 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1371 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1372 dir = dj->dir; /* Ptr to the directory entry of current index */
Michael J. Spencer 1:f5ac63519541 1373 c = dir[DIR_Name];
Michael J. Spencer 1:f5ac63519541 1374 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
Michael J. Spencer 1:f5ac63519541 1375 #if _USE_LFN /* LFN configuration */
Michael J. Spencer 1:f5ac63519541 1376 a = dir[DIR_Attr] & AM_MASK;
Michael J. Spencer 1:f5ac63519541 1377 if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
Michael J. Spencer 1:f5ac63519541 1378 ord = 0xFF;
Michael J. Spencer 1:f5ac63519541 1379 } else {
Michael J. Spencer 1:f5ac63519541 1380 if (a == AM_LFN) { /* An LFN entry is found */
Michael J. Spencer 1:f5ac63519541 1381 if (dj->lfn) {
Michael J. Spencer 1:f5ac63519541 1382 if (c & LLE) { /* Is it start of LFN sequence? */
Michael J. Spencer 1:f5ac63519541 1383 sum = dir[LDIR_Chksum];
Michael J. Spencer 1:f5ac63519541 1384 c &= ~LLE; ord = c; /* LFN start order */
Michael J. Spencer 1:f5ac63519541 1385 dj->lfn_idx = dj->index;
Michael J. Spencer 1:f5ac63519541 1386 }
Michael J. Spencer 1:f5ac63519541 1387 /* Check validity of the LFN entry and compare it with given name */
Michael J. Spencer 1:f5ac63519541 1388 ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
Michael J. Spencer 1:f5ac63519541 1389 }
Michael J. Spencer 1:f5ac63519541 1390 } else { /* An SFN entry is found */
Michael J. Spencer 1:f5ac63519541 1391 if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
Michael J. Spencer 1:f5ac63519541 1392 ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
Michael J. Spencer 1:f5ac63519541 1393 if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
Michael J. Spencer 1:f5ac63519541 1394 }
Michael J. Spencer 1:f5ac63519541 1395 }
Michael J. Spencer 1:f5ac63519541 1396 #else /* Non LFN configuration */
Michael J. Spencer 1:f5ac63519541 1397 if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
Michael J. Spencer 1:f5ac63519541 1398 break;
Michael J. Spencer 1:f5ac63519541 1399 #endif
Michael J. Spencer 1:f5ac63519541 1400 res = dir_next(dj, 0); /* Next entry */
Michael J. Spencer 1:f5ac63519541 1401 } while (res == FR_OK);
Michael J. Spencer 1:f5ac63519541 1402
Michael J. Spencer 1:f5ac63519541 1403 return res;
Michael J. Spencer 1:f5ac63519541 1404 }
Michael J. Spencer 1:f5ac63519541 1405
Michael J. Spencer 1:f5ac63519541 1406
Michael J. Spencer 1:f5ac63519541 1407
Michael J. Spencer 1:f5ac63519541 1408
Michael J. Spencer 1:f5ac63519541 1409 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1410 /* Read an object from the directory */
Michael J. Spencer 1:f5ac63519541 1411 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1412 #if _FS_MINIMIZE <= 1
Michael J. Spencer 1:f5ac63519541 1413 static
Michael J. Spencer 1:f5ac63519541 1414 FRESULT dir_read (
Michael J. Spencer 1:f5ac63519541 1415 FATFS_DIR *dj /* Pointer to the directory object that pointing the entry to be read */
Michael J. Spencer 1:f5ac63519541 1416 )
Michael J. Spencer 1:f5ac63519541 1417 {
Michael J. Spencer 1:f5ac63519541 1418 FRESULT res;
Michael J. Spencer 1:f5ac63519541 1419 BYTE c, *dir;
Michael J. Spencer 1:f5ac63519541 1420 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1421 BYTE a, ord = 0xFF, sum = 0xFF;
Michael J. Spencer 1:f5ac63519541 1422 #endif
Michael J. Spencer 1:f5ac63519541 1423
Michael J. Spencer 1:f5ac63519541 1424 res = FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 1425 while (dj->sect) {
Michael J. Spencer 1:f5ac63519541 1426 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1427 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1428 dir = dj->dir; /* Ptr to the directory entry of current index */
Michael J. Spencer 1:f5ac63519541 1429 c = dir[DIR_Name];
Michael J. Spencer 1:f5ac63519541 1430 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
Michael J. Spencer 1:f5ac63519541 1431 #if _USE_LFN /* LFN configuration */
Michael J. Spencer 1:f5ac63519541 1432 a = dir[DIR_Attr] & AM_MASK;
Michael J. Spencer 1:f5ac63519541 1433 if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
Michael J. Spencer 1:f5ac63519541 1434 ord = 0xFF;
Michael J. Spencer 1:f5ac63519541 1435 } else {
Michael J. Spencer 1:f5ac63519541 1436 if (a == AM_LFN) { /* An LFN entry is found */
Michael J. Spencer 1:f5ac63519541 1437 if (c & LLE) { /* Is it start of LFN sequence? */
Michael J. Spencer 1:f5ac63519541 1438 sum = dir[LDIR_Chksum];
Michael J. Spencer 1:f5ac63519541 1439 c &= ~LLE; ord = c;
Michael J. Spencer 1:f5ac63519541 1440 dj->lfn_idx = dj->index;
Michael J. Spencer 1:f5ac63519541 1441 }
Michael J. Spencer 1:f5ac63519541 1442 /* Check LFN validity and capture it */
Michael J. Spencer 1:f5ac63519541 1443 ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
Michael J. Spencer 1:f5ac63519541 1444 } else { /* An SFN entry is found */
Michael J. Spencer 1:f5ac63519541 1445 if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
Michael J. Spencer 1:f5ac63519541 1446 dj->lfn_idx = 0xFFFF; /* It has no LFN. */
Michael J. Spencer 1:f5ac63519541 1447 break;
Michael J. Spencer 1:f5ac63519541 1448 }
Michael J. Spencer 1:f5ac63519541 1449 }
Michael J. Spencer 1:f5ac63519541 1450 #else /* Non LFN configuration */
Michael J. Spencer 1:f5ac63519541 1451 if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
Michael J. Spencer 1:f5ac63519541 1452 break;
Michael J. Spencer 1:f5ac63519541 1453 #endif
Michael J. Spencer 1:f5ac63519541 1454 res = dir_next(dj, 0); /* Next entry */
Michael J. Spencer 1:f5ac63519541 1455 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1456 }
Michael J. Spencer 1:f5ac63519541 1457
Michael J. Spencer 1:f5ac63519541 1458 if (res != FR_OK) dj->sect = 0;
Michael J. Spencer 1:f5ac63519541 1459
Michael J. Spencer 1:f5ac63519541 1460 return res;
Michael J. Spencer 1:f5ac63519541 1461 }
Michael J. Spencer 1:f5ac63519541 1462 #endif
Michael J. Spencer 1:f5ac63519541 1463
Michael J. Spencer 1:f5ac63519541 1464
Michael J. Spencer 1:f5ac63519541 1465
Michael J. Spencer 1:f5ac63519541 1466 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1467 /* Register an object to the directory */
Michael J. Spencer 1:f5ac63519541 1468 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1469 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 1470 static
Michael J. Spencer 1:f5ac63519541 1471 FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
Michael J. Spencer 1:f5ac63519541 1472 FATFS_DIR *dj /* Target directory with object name to be created */
Michael J. Spencer 1:f5ac63519541 1473 )
Michael J. Spencer 1:f5ac63519541 1474 {
Michael J. Spencer 1:f5ac63519541 1475 FRESULT res;
Michael J. Spencer 1:f5ac63519541 1476 BYTE c, *dir;
Michael J. Spencer 1:f5ac63519541 1477 #if _USE_LFN /* LFN configuration */
Michael J. Spencer 1:f5ac63519541 1478 WORD n, ne, is;
Michael J. Spencer 1:f5ac63519541 1479 BYTE sn[12], *fn, sum;
Michael J. Spencer 1:f5ac63519541 1480 WCHAR *lfn;
Michael J. Spencer 1:f5ac63519541 1481
Michael J. Spencer 1:f5ac63519541 1482
Michael J. Spencer 1:f5ac63519541 1483 fn = dj->fn; lfn = dj->lfn;
Michael J. Spencer 1:f5ac63519541 1484 mem_cpy(sn, fn, 12);
Michael J. Spencer 1:f5ac63519541 1485
Michael J. Spencer 1:f5ac63519541 1486 if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
Michael J. Spencer 1:f5ac63519541 1487 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1488
Michael J. Spencer 1:f5ac63519541 1489 if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
Michael J. Spencer 1:f5ac63519541 1490 fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
Michael J. Spencer 1:f5ac63519541 1491 for (n = 1; n < 100; n++) {
Michael J. Spencer 1:f5ac63519541 1492 gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
Michael J. Spencer 1:f5ac63519541 1493 res = dir_find(dj); /* Check if the name collides with existing SFN */
Michael J. Spencer 1:f5ac63519541 1494 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1495 }
Michael J. Spencer 1:f5ac63519541 1496 if (n == 100) return FR_DENIED; /* Abort if too many collisions */
Michael J. Spencer 1:f5ac63519541 1497 if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
Michael J. Spencer 1:f5ac63519541 1498 fn[NS] = sn[NS]; dj->lfn = lfn;
Michael J. Spencer 1:f5ac63519541 1499 }
Michael J. Spencer 1:f5ac63519541 1500
Michael J. Spencer 1:f5ac63519541 1501 if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
Michael J. Spencer 1:f5ac63519541 1502 for (ne = 0; lfn[ne]; ne++) ;
Michael J. Spencer 1:f5ac63519541 1503 ne = (ne + 25) / 13;
Michael J. Spencer 1:f5ac63519541 1504 } else { /* Otherwise reserve only an SFN entry. */
Michael J. Spencer 1:f5ac63519541 1505 ne = 1;
Michael J. Spencer 1:f5ac63519541 1506 }
Michael J. Spencer 1:f5ac63519541 1507
Michael J. Spencer 1:f5ac63519541 1508 /* Reserve contiguous entries */
Michael J. Spencer 1:f5ac63519541 1509 res = dir_sdi(dj, 0);
Michael J. Spencer 1:f5ac63519541 1510 if (res != FR_OK) return res;
Michael J. Spencer 1:f5ac63519541 1511 n = is = 0;
Michael J. Spencer 1:f5ac63519541 1512 do {
Michael J. Spencer 1:f5ac63519541 1513 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1514 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1515 c = *dj->dir; /* Check the entry status */
Michael J. Spencer 1:f5ac63519541 1516 if (c == DDE || c == 0) { /* Is it a blank entry? */
Michael J. Spencer 1:f5ac63519541 1517 if (n == 0) is = dj->index; /* First index of the contiguous entry */
Michael J. Spencer 1:f5ac63519541 1518 if (++n == ne) break; /* A contiguous entry that required count is found */
Michael J. Spencer 1:f5ac63519541 1519 } else {
Michael J. Spencer 1:f5ac63519541 1520 n = 0; /* Not a blank entry. Restart to search */
Michael J. Spencer 1:f5ac63519541 1521 }
Michael J. Spencer 1:f5ac63519541 1522 res = dir_next(dj, 1); /* Next entry with table stretch */
Michael J. Spencer 1:f5ac63519541 1523 } while (res == FR_OK);
Michael J. Spencer 1:f5ac63519541 1524
Michael J. Spencer 1:f5ac63519541 1525 if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
Michael J. Spencer 1:f5ac63519541 1526 res = dir_sdi(dj, is);
Michael J. Spencer 1:f5ac63519541 1527 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1528 sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
Michael J. Spencer 1:f5ac63519541 1529 ne--;
Michael J. Spencer 1:f5ac63519541 1530 do { /* Store LFN entries in bottom first */
Michael J. Spencer 1:f5ac63519541 1531 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1532 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1533 fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
Michael J. Spencer 1:f5ac63519541 1534 dj->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 1535 res = dir_next(dj, 0); /* Next entry */
Michael J. Spencer 1:f5ac63519541 1536 } while (res == FR_OK && --ne);
Michael J. Spencer 1:f5ac63519541 1537 }
Michael J. Spencer 1:f5ac63519541 1538 }
Michael J. Spencer 1:f5ac63519541 1539
Michael J. Spencer 1:f5ac63519541 1540 #else /* Non LFN configuration */
Michael J. Spencer 1:f5ac63519541 1541 res = dir_sdi(dj, 0);
Michael J. Spencer 1:f5ac63519541 1542 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1543 do { /* Find a blank entry for the SFN */
Michael J. Spencer 1:f5ac63519541 1544 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1545 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1546 c = *dj->dir;
Michael J. Spencer 1:f5ac63519541 1547 if (c == DDE || c == 0) break; /* Is it a blank entry? */
Michael J. Spencer 1:f5ac63519541 1548 res = dir_next(dj, 1); /* Next entry with table stretch */
Michael J. Spencer 1:f5ac63519541 1549 } while (res == FR_OK);
Michael J. Spencer 1:f5ac63519541 1550 }
Michael J. Spencer 1:f5ac63519541 1551 #endif
Michael J. Spencer 1:f5ac63519541 1552
Michael J. Spencer 1:f5ac63519541 1553 if (res == FR_OK) { /* Initialize the SFN entry */
Michael J. Spencer 1:f5ac63519541 1554 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1555 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1556 dir = dj->dir;
Michael J. Spencer 1:f5ac63519541 1557 mem_set(dir, 0, SZ_DIR); /* Clean the entry */
Michael J. Spencer 1:f5ac63519541 1558 mem_cpy(dir, dj->fn, 11); /* Put SFN */
Michael J. Spencer 1:f5ac63519541 1559 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1560 dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
Michael J. Spencer 1:f5ac63519541 1561 #endif
Michael J. Spencer 1:f5ac63519541 1562 dj->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 1563 }
Michael J. Spencer 1:f5ac63519541 1564 }
Michael J. Spencer 1:f5ac63519541 1565
Michael J. Spencer 1:f5ac63519541 1566 return res;
Michael J. Spencer 1:f5ac63519541 1567 }
Michael J. Spencer 1:f5ac63519541 1568 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 1569
Michael J. Spencer 1:f5ac63519541 1570
Michael J. Spencer 1:f5ac63519541 1571
Michael J. Spencer 1:f5ac63519541 1572
Michael J. Spencer 1:f5ac63519541 1573 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1574 /* Remove an object from the directory */
Michael J. Spencer 1:f5ac63519541 1575 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1576 #if !_FS_READONLY && !_FS_MINIMIZE
Michael J. Spencer 1:f5ac63519541 1577 static
Michael J. Spencer 1:f5ac63519541 1578 FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
Michael J. Spencer 1:f5ac63519541 1579 FATFS_DIR *dj /* Directory object pointing the entry to be removed */
Michael J. Spencer 1:f5ac63519541 1580 )
Michael J. Spencer 1:f5ac63519541 1581 {
Michael J. Spencer 1:f5ac63519541 1582 FRESULT res;
Michael J. Spencer 1:f5ac63519541 1583 #if _USE_LFN /* LFN configuration */
Michael J. Spencer 1:f5ac63519541 1584 WORD i;
Michael J. Spencer 1:f5ac63519541 1585
Michael J. Spencer 1:f5ac63519541 1586 i = dj->index; /* SFN index */
Michael J. Spencer 1:f5ac63519541 1587 res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
Michael J. Spencer 1:f5ac63519541 1588 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1589 do {
Michael J. Spencer 1:f5ac63519541 1590 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1591 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1592 *dj->dir = DDE; /* Mark the entry "deleted" */
Michael J. Spencer 1:f5ac63519541 1593 dj->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 1594 if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
Michael J. Spencer 1:f5ac63519541 1595 res = dir_next(dj, 0); /* Next entry */
Michael J. Spencer 1:f5ac63519541 1596 } while (res == FR_OK);
Michael J. Spencer 1:f5ac63519541 1597 if (res == FR_NO_FILE) res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 1598 }
Michael J. Spencer 1:f5ac63519541 1599
Michael J. Spencer 1:f5ac63519541 1600 #else /* Non LFN configuration */
Michael J. Spencer 1:f5ac63519541 1601 res = dir_sdi(dj, dj->index);
Michael J. Spencer 1:f5ac63519541 1602 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1603 res = move_window(dj->fs, dj->sect);
Michael J. Spencer 1:f5ac63519541 1604 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 1605 *dj->dir = DDE; /* Mark the entry "deleted" */
Michael J. Spencer 1:f5ac63519541 1606 dj->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 1607 }
Michael J. Spencer 1:f5ac63519541 1608 }
Michael J. Spencer 1:f5ac63519541 1609 #endif
Michael J. Spencer 1:f5ac63519541 1610
Michael J. Spencer 1:f5ac63519541 1611 return res;
Michael J. Spencer 1:f5ac63519541 1612 }
Michael J. Spencer 1:f5ac63519541 1613 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 1614
Michael J. Spencer 1:f5ac63519541 1615
Michael J. Spencer 1:f5ac63519541 1616
Michael J. Spencer 1:f5ac63519541 1617
Michael J. Spencer 1:f5ac63519541 1618 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1619 /* Pick a segment and create the object name in directory form */
Michael J. Spencer 1:f5ac63519541 1620 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1621
Michael J. Spencer 1:f5ac63519541 1622 static
Michael J. Spencer 1:f5ac63519541 1623 FRESULT create_name (
Michael J. Spencer 1:f5ac63519541 1624 FATFS_DIR *dj, /* Pointer to the directory object */
Michael J. Spencer 1:f5ac63519541 1625 const TCHAR **path /* Pointer to pointer to the segment in the path string */
Michael J. Spencer 1:f5ac63519541 1626 )
Michael J. Spencer 1:f5ac63519541 1627 {
Michael J. Spencer 1:f5ac63519541 1628 #ifdef _EXCVT
Michael J. Spencer 1:f5ac63519541 1629 static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
Michael J. Spencer 1:f5ac63519541 1630 #endif
Michael J. Spencer 1:f5ac63519541 1631
Michael J. Spencer 1:f5ac63519541 1632 #if _USE_LFN /* LFN configuration */
Michael J. Spencer 1:f5ac63519541 1633 BYTE b, cf;
Michael J. Spencer 1:f5ac63519541 1634 WCHAR w, *lfn;
Michael J. Spencer 1:f5ac63519541 1635 UINT i, ni, si, di;
Michael J. Spencer 1:f5ac63519541 1636 const TCHAR *p;
Michael J. Spencer 1:f5ac63519541 1637
Michael J. Spencer 1:f5ac63519541 1638 /* Create LFN in Unicode */
Michael J. Spencer 1:f5ac63519541 1639 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
Michael J. Spencer 1:f5ac63519541 1640 lfn = dj->lfn;
Michael J. Spencer 1:f5ac63519541 1641 si = di = 0;
Michael J. Spencer 1:f5ac63519541 1642 for (;;) {
Michael J. Spencer 1:f5ac63519541 1643 w = p[si++]; /* Get a character */
Michael J. Spencer 1:f5ac63519541 1644 if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
Michael J. Spencer 1:f5ac63519541 1645 if (di >= _MAX_LFN) /* Reject too long name */
Michael J. Spencer 1:f5ac63519541 1646 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1647 #if !_LFN_UNICODE
Michael J. Spencer 1:f5ac63519541 1648 w &= 0xFF;
Michael J. Spencer 1:f5ac63519541 1649 if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
Michael J. Spencer 1:f5ac63519541 1650 b = (BYTE)p[si++]; /* Get 2nd byte */
Michael J. Spencer 1:f5ac63519541 1651 if (!IsDBCS2(b))
Michael J. Spencer 1:f5ac63519541 1652 return FR_INVALID_NAME; /* Reject invalid sequence */
Michael J. Spencer 1:f5ac63519541 1653 w = (w << 8) + b; /* Create a DBC */
Michael J. Spencer 1:f5ac63519541 1654 }
Michael J. Spencer 1:f5ac63519541 1655 w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
Michael J. Spencer 1:f5ac63519541 1656 if (!w) return FR_INVALID_NAME; /* Reject invalid code */
Michael J. Spencer 1:f5ac63519541 1657 #endif
Michael J. Spencer 1:f5ac63519541 1658 if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
Michael J. Spencer 1:f5ac63519541 1659 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1660 lfn[di++] = w; /* Store the Unicode char */
Michael J. Spencer 1:f5ac63519541 1661 }
Michael J. Spencer 1:f5ac63519541 1662 *path = &p[si]; /* Return pointer to the next segment */
Michael J. Spencer 1:f5ac63519541 1663 cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
Michael J. Spencer 1:f5ac63519541 1664 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 1665 if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */
Michael J. Spencer 1:f5ac63519541 1666 (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
Michael J. Spencer 1:f5ac63519541 1667 lfn[di] = 0;
Michael J. Spencer 1:f5ac63519541 1668 for (i = 0; i < 11; i++)
Michael J. Spencer 1:f5ac63519541 1669 dj->fn[i] = (i < di) ? '.' : ' ';
Michael J. Spencer 1:f5ac63519541 1670 dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
Michael J. Spencer 1:f5ac63519541 1671 return FR_OK;
Michael J. Spencer 1:f5ac63519541 1672 }
Michael J. Spencer 1:f5ac63519541 1673 #endif
Michael J. Spencer 1:f5ac63519541 1674 while (di) { /* Strip trailing spaces and dots */
Michael J. Spencer 1:f5ac63519541 1675 w = lfn[di-1];
Michael J. Spencer 1:f5ac63519541 1676 if (w != ' ' && w != '.') break;
Michael J. Spencer 1:f5ac63519541 1677 di--;
Michael J. Spencer 1:f5ac63519541 1678 }
Michael J. Spencer 1:f5ac63519541 1679 if (!di) return FR_INVALID_NAME; /* Reject nul string */
Michael J. Spencer 1:f5ac63519541 1680
Michael J. Spencer 1:f5ac63519541 1681 lfn[di] = 0; /* LFN is created */
Michael J. Spencer 1:f5ac63519541 1682
Michael J. Spencer 1:f5ac63519541 1683 /* Create SFN in directory form */
Michael J. Spencer 1:f5ac63519541 1684 mem_set(dj->fn, ' ', 11);
Michael J. Spencer 1:f5ac63519541 1685 for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
Michael J. Spencer 1:f5ac63519541 1686 if (si) cf |= NS_LOSS | NS_LFN;
Michael J. Spencer 1:f5ac63519541 1687 while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
Michael J. Spencer 1:f5ac63519541 1688
Michael J. Spencer 1:f5ac63519541 1689 b = i = 0; ni = 8;
Michael J. Spencer 1:f5ac63519541 1690 for (;;) {
Michael J. Spencer 1:f5ac63519541 1691 w = lfn[si++]; /* Get an LFN char */
Michael J. Spencer 1:f5ac63519541 1692 if (!w) break; /* Break on end of the LFN */
Michael J. Spencer 1:f5ac63519541 1693 if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
Michael J. Spencer 1:f5ac63519541 1694 cf |= NS_LOSS | NS_LFN; continue;
Michael J. Spencer 1:f5ac63519541 1695 }
Michael J. Spencer 1:f5ac63519541 1696
Michael J. Spencer 1:f5ac63519541 1697 if (i >= ni || si == di) { /* Extension or end of SFN */
Michael J. Spencer 1:f5ac63519541 1698 if (ni == 11) { /* Long extension */
Michael J. Spencer 1:f5ac63519541 1699 cf |= NS_LOSS | NS_LFN; break;
Michael J. Spencer 1:f5ac63519541 1700 }
Michael J. Spencer 1:f5ac63519541 1701 if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
Michael J. Spencer 1:f5ac63519541 1702 if (si > di) break; /* No extension */
Michael J. Spencer 1:f5ac63519541 1703 si = di; i = 8; ni = 11; /* Enter extension section */
Michael J. Spencer 1:f5ac63519541 1704 b <<= 2; continue;
Michael J. Spencer 1:f5ac63519541 1705 }
Michael J. Spencer 1:f5ac63519541 1706
Michael J. Spencer 1:f5ac63519541 1707 if (w >= 0x80) { /* Non ASCII char */
Michael J. Spencer 1:f5ac63519541 1708 #ifdef _EXCVT
Michael J. Spencer 1:f5ac63519541 1709 w = ff_convert(w, 0); /* Unicode -> OEM code */
Michael J. Spencer 1:f5ac63519541 1710 if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
Michael J. Spencer 1:f5ac63519541 1711 #else
Michael J. Spencer 1:f5ac63519541 1712 w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
Michael J. Spencer 1:f5ac63519541 1713 #endif
Michael J. Spencer 1:f5ac63519541 1714 cf |= NS_LFN; /* Force create LFN entry */
Michael J. Spencer 1:f5ac63519541 1715 }
Michael J. Spencer 1:f5ac63519541 1716
Michael J. Spencer 1:f5ac63519541 1717 if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
Michael J. Spencer 1:f5ac63519541 1718 if (i >= ni - 1) {
Michael J. Spencer 1:f5ac63519541 1719 cf |= NS_LOSS | NS_LFN; i = ni; continue;
Michael J. Spencer 1:f5ac63519541 1720 }
Michael J. Spencer 1:f5ac63519541 1721 dj->fn[i++] = (BYTE)(w >> 8);
Michael J. Spencer 1:f5ac63519541 1722 } else { /* Single byte char */
Michael J. Spencer 1:f5ac63519541 1723 if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
Michael J. Spencer 1:f5ac63519541 1724 w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
Michael J. Spencer 1:f5ac63519541 1725 } else {
Michael J. Spencer 1:f5ac63519541 1726 if (IsUpper(w)) { /* ASCII large capital */
Michael J. Spencer 1:f5ac63519541 1727 b |= 2;
Michael J. Spencer 1:f5ac63519541 1728 } else {
Michael J. Spencer 1:f5ac63519541 1729 if (IsLower(w)) { /* ASCII small capital */
Michael J. Spencer 1:f5ac63519541 1730 b |= 1; w -= 0x20;
Michael J. Spencer 1:f5ac63519541 1731 }
Michael J. Spencer 1:f5ac63519541 1732 }
Michael J. Spencer 1:f5ac63519541 1733 }
Michael J. Spencer 1:f5ac63519541 1734 }
Michael J. Spencer 1:f5ac63519541 1735 dj->fn[i++] = (BYTE)w;
Michael J. Spencer 1:f5ac63519541 1736 }
Michael J. Spencer 1:f5ac63519541 1737
Michael J. Spencer 1:f5ac63519541 1738 if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
Michael J. Spencer 1:f5ac63519541 1739
Michael J. Spencer 1:f5ac63519541 1740 if (ni == 8) b <<= 2;
Michael J. Spencer 1:f5ac63519541 1741 if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
Michael J. Spencer 1:f5ac63519541 1742 cf |= NS_LFN;
Michael J. Spencer 1:f5ac63519541 1743 if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
Michael J. Spencer 1:f5ac63519541 1744 if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
Michael J. Spencer 1:f5ac63519541 1745 if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
Michael J. Spencer 1:f5ac63519541 1746 }
Michael J. Spencer 1:f5ac63519541 1747
Michael J. Spencer 1:f5ac63519541 1748 dj->fn[NS] = cf; /* SFN is created */
Michael J. Spencer 1:f5ac63519541 1749
Michael J. Spencer 1:f5ac63519541 1750 return FR_OK;
Michael J. Spencer 1:f5ac63519541 1751
Michael J. Spencer 1:f5ac63519541 1752
Michael J. Spencer 1:f5ac63519541 1753 #else /* Non-LFN configuration */
Michael J. Spencer 1:f5ac63519541 1754 BYTE b, c, d, *sfn;
Michael J. Spencer 1:f5ac63519541 1755 UINT ni, si, i;
Michael J. Spencer 1:f5ac63519541 1756 const char *p;
Michael J. Spencer 1:f5ac63519541 1757
Michael J. Spencer 1:f5ac63519541 1758 /* Create file name in directory form */
Michael J. Spencer 1:f5ac63519541 1759 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
Michael J. Spencer 1:f5ac63519541 1760 sfn = dj->fn;
Michael J. Spencer 1:f5ac63519541 1761 mem_set(sfn, ' ', 11);
Michael J. Spencer 1:f5ac63519541 1762 si = i = b = 0; ni = 8;
Michael J. Spencer 1:f5ac63519541 1763 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 1764 if (p[si] == '.') { /* Is this a dot entry? */
Michael J. Spencer 1:f5ac63519541 1765 for (;;) {
Michael J. Spencer 1:f5ac63519541 1766 c = (BYTE)p[si++];
Michael J. Spencer 1:f5ac63519541 1767 if (c != '.' || si >= 3) break;
Michael J. Spencer 1:f5ac63519541 1768 sfn[i++] = c;
Michael J. Spencer 1:f5ac63519541 1769 }
Michael J. Spencer 1:f5ac63519541 1770 if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1771 *path = &p[si]; /* Return pointer to the next segment */
Michael J. Spencer 1:f5ac63519541 1772 sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
Michael J. Spencer 1:f5ac63519541 1773 return FR_OK;
Michael J. Spencer 1:f5ac63519541 1774 }
Michael J. Spencer 1:f5ac63519541 1775 #endif
Michael J. Spencer 1:f5ac63519541 1776 for (;;) {
Michael J. Spencer 1:f5ac63519541 1777 c = (BYTE)p[si++];
Michael J. Spencer 1:f5ac63519541 1778 if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
Michael J. Spencer 1:f5ac63519541 1779 if (c == '.' || i >= ni) {
Michael J. Spencer 1:f5ac63519541 1780 if (ni != 8 || c != '.') return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1781 i = 8; ni = 11;
Michael J. Spencer 1:f5ac63519541 1782 b <<= 2; continue;
Michael J. Spencer 1:f5ac63519541 1783 }
Michael J. Spencer 1:f5ac63519541 1784 if (c >= 0x80) { /* Extended char? */
Michael J. Spencer 1:f5ac63519541 1785 b |= 3; /* Eliminate NT flag */
Michael J. Spencer 1:f5ac63519541 1786 #ifdef _EXCVT
Michael J. Spencer 1:f5ac63519541 1787 c = excvt[c-0x80]; /* Upper conversion (SBCS) */
Michael J. Spencer 1:f5ac63519541 1788 #else
Michael J. Spencer 1:f5ac63519541 1789 #if !_DF1S /* ASCII only cfg */
Michael J. Spencer 1:f5ac63519541 1790 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1791 #endif
Michael J. Spencer 1:f5ac63519541 1792 #endif
Michael J. Spencer 1:f5ac63519541 1793 }
Michael J. Spencer 1:f5ac63519541 1794 if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
Michael J. Spencer 1:f5ac63519541 1795 d = (BYTE)p[si++]; /* Get 2nd byte */
Michael J. Spencer 1:f5ac63519541 1796 if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
Michael J. Spencer 1:f5ac63519541 1797 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1798 sfn[i++] = c;
Michael J. Spencer 1:f5ac63519541 1799 sfn[i++] = d;
Michael J. Spencer 1:f5ac63519541 1800 } else { /* Single byte code */
Michael J. Spencer 1:f5ac63519541 1801 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
Michael J. Spencer 1:f5ac63519541 1802 return FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 1803 if (IsUpper(c)) { /* ASCII large capital? */
Michael J. Spencer 1:f5ac63519541 1804 b |= 2;
Michael J. Spencer 1:f5ac63519541 1805 } else {
Michael J. Spencer 1:f5ac63519541 1806 if (IsLower(c)) { /* ASCII small capital? */
Michael J. Spencer 1:f5ac63519541 1807 b |= 1; c -= 0x20;
Michael J. Spencer 1:f5ac63519541 1808 }
Michael J. Spencer 1:f5ac63519541 1809 }
Michael J. Spencer 1:f5ac63519541 1810 sfn[i++] = c;
Michael J. Spencer 1:f5ac63519541 1811 }
Michael J. Spencer 1:f5ac63519541 1812 }
Michael J. Spencer 1:f5ac63519541 1813 *path = &p[si]; /* Return pointer to the next segment */
Michael J. Spencer 1:f5ac63519541 1814 c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
Michael J. Spencer 1:f5ac63519541 1815
Michael J. Spencer 1:f5ac63519541 1816 if (!i) return FR_INVALID_NAME; /* Reject nul string */
Michael J. Spencer 1:f5ac63519541 1817 if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
Michael J. Spencer 1:f5ac63519541 1818
Michael J. Spencer 1:f5ac63519541 1819 if (ni == 8) b <<= 2;
Michael J. Spencer 1:f5ac63519541 1820 if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
Michael J. Spencer 1:f5ac63519541 1821 if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
Michael J. Spencer 1:f5ac63519541 1822
Michael J. Spencer 1:f5ac63519541 1823 sfn[NS] = c; /* Store NT flag, File name is created */
Michael J. Spencer 1:f5ac63519541 1824
Michael J. Spencer 1:f5ac63519541 1825 return FR_OK;
Michael J. Spencer 1:f5ac63519541 1826 #endif
Michael J. Spencer 1:f5ac63519541 1827 }
Michael J. Spencer 1:f5ac63519541 1828
Michael J. Spencer 1:f5ac63519541 1829
Michael J. Spencer 1:f5ac63519541 1830
Michael J. Spencer 1:f5ac63519541 1831
Michael J. Spencer 1:f5ac63519541 1832 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1833 /* Get file information from directory entry */
Michael J. Spencer 1:f5ac63519541 1834 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1835 #if _FS_MINIMIZE <= 1
Michael J. Spencer 1:f5ac63519541 1836 static
Michael J. Spencer 1:f5ac63519541 1837 void get_fileinfo ( /* No return code */
Michael J. Spencer 1:f5ac63519541 1838 FATFS_DIR *dj, /* Pointer to the directory object */
Michael J. Spencer 1:f5ac63519541 1839 FILINFO *fno /* Pointer to the file information to be filled */
Michael J. Spencer 1:f5ac63519541 1840 )
Michael J. Spencer 1:f5ac63519541 1841 {
Michael J. Spencer 1:f5ac63519541 1842 UINT i;
Michael J. Spencer 1:f5ac63519541 1843 BYTE nt, *dir;
Michael J. Spencer 1:f5ac63519541 1844 TCHAR *p, c;
Michael J. Spencer 1:f5ac63519541 1845
Michael J. Spencer 1:f5ac63519541 1846
Michael J. Spencer 1:f5ac63519541 1847 p = fno->fname;
Michael J. Spencer 1:f5ac63519541 1848 if (dj->sect) {
Michael J. Spencer 1:f5ac63519541 1849 dir = dj->dir;
Michael J. Spencer 1:f5ac63519541 1850 nt = dir[DIR_NTres]; /* NT flag */
Michael J. Spencer 1:f5ac63519541 1851 for (i = 0; i < 8; i++) { /* Copy name body */
Michael J. Spencer 1:f5ac63519541 1852 c = dir[i];
Michael J. Spencer 1:f5ac63519541 1853 if (c == ' ') break;
Michael J. Spencer 1:f5ac63519541 1854 if (c == NDDE) c = (TCHAR)DDE;
Michael J. Spencer 1:f5ac63519541 1855 if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
Michael J. Spencer 1:f5ac63519541 1856 #if _LFN_UNICODE
Michael J. Spencer 1:f5ac63519541 1857 if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
Michael J. Spencer 1:f5ac63519541 1858 c = (c << 8) | dir[++i];
Michael J. Spencer 1:f5ac63519541 1859 c = ff_convert(c, 1);
Michael J. Spencer 1:f5ac63519541 1860 if (!c) c = '?';
Michael J. Spencer 1:f5ac63519541 1861 #endif
Michael J. Spencer 1:f5ac63519541 1862 *p++ = c;
Michael J. Spencer 1:f5ac63519541 1863 }
Michael J. Spencer 1:f5ac63519541 1864 if (dir[8] != ' ') { /* Copy name extension */
Michael J. Spencer 1:f5ac63519541 1865 *p++ = '.';
Michael J. Spencer 1:f5ac63519541 1866 for (i = 8; i < 11; i++) {
Michael J. Spencer 1:f5ac63519541 1867 c = dir[i];
Michael J. Spencer 1:f5ac63519541 1868 if (c == ' ') break;
Michael J. Spencer 1:f5ac63519541 1869 if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
Michael J. Spencer 1:f5ac63519541 1870 #if _LFN_UNICODE
Michael J. Spencer 1:f5ac63519541 1871 if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
Michael J. Spencer 1:f5ac63519541 1872 c = (c << 8) | dir[++i];
Michael J. Spencer 1:f5ac63519541 1873 c = ff_convert(c, 1);
Michael J. Spencer 1:f5ac63519541 1874 if (!c) c = '?';
Michael J. Spencer 1:f5ac63519541 1875 #endif
Michael J. Spencer 1:f5ac63519541 1876 *p++ = c;
Michael J. Spencer 1:f5ac63519541 1877 }
Michael J. Spencer 1:f5ac63519541 1878 }
Michael J. Spencer 1:f5ac63519541 1879 fno->fattrib = dir[DIR_Attr]; /* Attribute */
Michael J. Spencer 1:f5ac63519541 1880 fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
Michael J. Spencer 1:f5ac63519541 1881 fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
Michael J. Spencer 1:f5ac63519541 1882 fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
Michael J. Spencer 1:f5ac63519541 1883 }
Michael J. Spencer 1:f5ac63519541 1884 *p = 0; /* Terminate SFN str by a \0 */
Michael J. Spencer 1:f5ac63519541 1885
Michael J. Spencer 1:f5ac63519541 1886 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 1887 if (fno->lfname && fno->lfsize) {
Michael J. Spencer 1:f5ac63519541 1888 TCHAR *tp = fno->lfname;
Michael J. Spencer 1:f5ac63519541 1889 WCHAR w, *lfn;
Michael J. Spencer 1:f5ac63519541 1890
Michael J. Spencer 1:f5ac63519541 1891 i = 0;
Michael J. Spencer 1:f5ac63519541 1892 if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
Michael J. Spencer 1:f5ac63519541 1893 lfn = dj->lfn;
Michael J. Spencer 1:f5ac63519541 1894 while ((w = *lfn++) != 0) { /* Get an LFN char */
Michael J. Spencer 1:f5ac63519541 1895 #if !_LFN_UNICODE
Michael J. Spencer 1:f5ac63519541 1896 w = ff_convert(w, 0); /* Unicode -> OEM conversion */
Michael J. Spencer 1:f5ac63519541 1897 if (!w) { i = 0; break; } /* Could not convert, no LFN */
Michael J. Spencer 1:f5ac63519541 1898 if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
Michael J. Spencer 1:f5ac63519541 1899 tp[i++] = (TCHAR)(w >> 8);
Michael J. Spencer 1:f5ac63519541 1900 #endif
Michael J. Spencer 1:f5ac63519541 1901 if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
Michael J. Spencer 1:f5ac63519541 1902 tp[i++] = (TCHAR)w;
Michael J. Spencer 1:f5ac63519541 1903 }
Michael J. Spencer 1:f5ac63519541 1904 }
Michael J. Spencer 1:f5ac63519541 1905 tp[i] = 0; /* Terminate the LFN str by a \0 */
Michael J. Spencer 1:f5ac63519541 1906 }
Michael J. Spencer 1:f5ac63519541 1907 #endif
Michael J. Spencer 1:f5ac63519541 1908 }
Michael J. Spencer 1:f5ac63519541 1909 #endif /* _FS_MINIMIZE <= 1 */
Michael J. Spencer 1:f5ac63519541 1910
Michael J. Spencer 1:f5ac63519541 1911
Michael J. Spencer 1:f5ac63519541 1912
Michael J. Spencer 1:f5ac63519541 1913
Michael J. Spencer 1:f5ac63519541 1914 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1915 /* Follow a file path */
Michael J. Spencer 1:f5ac63519541 1916 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1917
Michael J. Spencer 1:f5ac63519541 1918 static
Michael J. Spencer 1:f5ac63519541 1919 FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
Michael J. Spencer 1:f5ac63519541 1920 FATFS_DIR *dj, /* Directory object to return last directory and found object */
Michael J. Spencer 1:f5ac63519541 1921 const TCHAR *path /* Full-path string to find a file or directory */
Michael J. Spencer 1:f5ac63519541 1922 )
Michael J. Spencer 1:f5ac63519541 1923 {
Michael J. Spencer 1:f5ac63519541 1924 FRESULT res;
Michael J. Spencer 1:f5ac63519541 1925 BYTE *dir, ns;
Michael J. Spencer 1:f5ac63519541 1926
Michael J. Spencer 1:f5ac63519541 1927
Michael J. Spencer 1:f5ac63519541 1928 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 1929 if (*path == '/' || *path == '\\') { /* There is a heading separator */
Michael J. Spencer 1:f5ac63519541 1930 path++; dj->sclust = 0; /* Strip it and start from the root dir */
Michael J. Spencer 1:f5ac63519541 1931 } else { /* No heading separator */
Michael J. Spencer 1:f5ac63519541 1932 dj->sclust = dj->fs->cdir; /* Start from the current dir */
Michael J. Spencer 1:f5ac63519541 1933 }
Michael J. Spencer 1:f5ac63519541 1934 #else
Michael J. Spencer 1:f5ac63519541 1935 if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
Michael J. Spencer 1:f5ac63519541 1936 path++;
Michael J. Spencer 1:f5ac63519541 1937 dj->sclust = 0; /* Start from the root dir */
Michael J. Spencer 1:f5ac63519541 1938 #endif
Michael J. Spencer 1:f5ac63519541 1939
Michael J. Spencer 1:f5ac63519541 1940 if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
Michael J. Spencer 1:f5ac63519541 1941 res = dir_sdi(dj, 0);
Michael J. Spencer 1:f5ac63519541 1942 dj->dir = 0;
Michael J. Spencer 1:f5ac63519541 1943
Michael J. Spencer 1:f5ac63519541 1944 } else { /* Follow path */
Michael J. Spencer 1:f5ac63519541 1945 for (;;) {
Michael J. Spencer 1:f5ac63519541 1946 res = create_name(dj, &path); /* Get a segment */
Michael J. Spencer 1:f5ac63519541 1947 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 1948 res = dir_find(dj); /* Find it */
Michael J. Spencer 1:f5ac63519541 1949 ns = *(dj->fn+NS);
Michael J. Spencer 1:f5ac63519541 1950 if (res != FR_OK) { /* Failed to find the object */
Michael J. Spencer 1:f5ac63519541 1951 if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
Michael J. Spencer 1:f5ac63519541 1952 /* Object not found */
Michael J. Spencer 1:f5ac63519541 1953 if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
Michael J. Spencer 1:f5ac63519541 1954 dj->sclust = 0; dj->dir = 0; /* It is the root dir */
Michael J. Spencer 1:f5ac63519541 1955 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 1956 if (!(ns & NS_LAST)) continue;
Michael J. Spencer 1:f5ac63519541 1957 } else { /* Could not find the object */
Michael J. Spencer 1:f5ac63519541 1958 if (!(ns & NS_LAST)) res = FR_NO_PATH;
Michael J. Spencer 1:f5ac63519541 1959 }
Michael J. Spencer 1:f5ac63519541 1960 break;
Michael J. Spencer 1:f5ac63519541 1961 }
Michael J. Spencer 1:f5ac63519541 1962 if (ns & NS_LAST) break; /* Last segment match. Function completed. */
Michael J. Spencer 1:f5ac63519541 1963 dir = dj->dir; /* There is next segment. Follow the sub directory */
Michael J. Spencer 1:f5ac63519541 1964 if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
Michael J. Spencer 1:f5ac63519541 1965 res = FR_NO_PATH; break;
Michael J. Spencer 1:f5ac63519541 1966 }
Michael J. Spencer 1:f5ac63519541 1967 dj->sclust = LD_CLUST(dir);
Michael J. Spencer 1:f5ac63519541 1968 }
Michael J. Spencer 1:f5ac63519541 1969 }
Michael J. Spencer 1:f5ac63519541 1970
Michael J. Spencer 1:f5ac63519541 1971 return res;
Michael J. Spencer 1:f5ac63519541 1972 }
Michael J. Spencer 1:f5ac63519541 1973
Michael J. Spencer 1:f5ac63519541 1974
Michael J. Spencer 1:f5ac63519541 1975
Michael J. Spencer 1:f5ac63519541 1976
Michael J. Spencer 1:f5ac63519541 1977 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1978 /* Load a sector and check if it is an FAT Volume Boot Record */
Michael J. Spencer 1:f5ac63519541 1979 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 1980
Michael J. Spencer 1:f5ac63519541 1981 static
Michael J. Spencer 1:f5ac63519541 1982 BYTE check_fs ( /* 0:FAT-VBR, 1:Valid BR but not FAT, 2:Not a BR, 3:Disk error */
Michael J. Spencer 1:f5ac63519541 1983 FATFS *fs, /* File system object */
Michael J. Spencer 1:f5ac63519541 1984 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
Michael J. Spencer 1:f5ac63519541 1985 )
Michael J. Spencer 1:f5ac63519541 1986 {
Michael J. Spencer 1:f5ac63519541 1987 if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
Michael J. Spencer 1:f5ac63519541 1988 return 3;
Michael J. Spencer 1:f5ac63519541 1989 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
Michael J. Spencer 1:f5ac63519541 1990 return 2;
Michael J. Spencer 1:f5ac63519541 1991
Michael J. Spencer 1:f5ac63519541 1992 if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
Michael J. Spencer 1:f5ac63519541 1993 return 0;
Michael J. Spencer 1:f5ac63519541 1994 if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
Michael J. Spencer 1:f5ac63519541 1995 return 0;
Michael J. Spencer 1:f5ac63519541 1996
Michael J. Spencer 1:f5ac63519541 1997 return 1;
Michael J. Spencer 1:f5ac63519541 1998 }
Michael J. Spencer 1:f5ac63519541 1999
Michael J. Spencer 1:f5ac63519541 2000
Michael J. Spencer 1:f5ac63519541 2001
Michael J. Spencer 1:f5ac63519541 2002
Michael J. Spencer 1:f5ac63519541 2003 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2004 /* Check if the file system object is valid or not */
Michael J. Spencer 1:f5ac63519541 2005 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2006
Michael J. Spencer 1:f5ac63519541 2007 static
Michael J. Spencer 1:f5ac63519541 2008 FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
Michael J. Spencer 1:f5ac63519541 2009 const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
Michael J. Spencer 1:f5ac63519541 2010 FATFS **rfs, /* Pointer to pointer to the found file system object */
Michael J. Spencer 1:f5ac63519541 2011 BYTE chk_wp /* !=0: Check media write protection for write access */
Michael J. Spencer 1:f5ac63519541 2012 )
Michael J. Spencer 1:f5ac63519541 2013 {
Michael J. Spencer 1:f5ac63519541 2014 BYTE fmt, b, pi, *tbl;
Michael J. Spencer 1:f5ac63519541 2015 UINT vol;
Michael J. Spencer 1:f5ac63519541 2016 DSTATUS stat;
Michael J. Spencer 1:f5ac63519541 2017 DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
Michael J. Spencer 1:f5ac63519541 2018 WORD nrsv;
Michael J. Spencer 1:f5ac63519541 2019 const TCHAR *p = *path;
Michael J. Spencer 1:f5ac63519541 2020 FATFS *fs;
Michael J. Spencer 1:f5ac63519541 2021
Michael J. Spencer 1:f5ac63519541 2022 /* Get logical drive number from the path name */
Michael J. Spencer 1:f5ac63519541 2023 vol = p[0] - '0'; /* Is there a drive number? */
Michael J. Spencer 1:f5ac63519541 2024 if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
Michael J. Spencer 1:f5ac63519541 2025 p += 2; *path = p; /* Return pointer to the path name */
Michael J. Spencer 1:f5ac63519541 2026 } else { /* No drive number is given */
Michael J. Spencer 1:f5ac63519541 2027 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 2028 vol = CurrVol; /* Use current drive */
Michael J. Spencer 1:f5ac63519541 2029 #else
Michael J. Spencer 1:f5ac63519541 2030 vol = 0; /* Use drive 0 */
Michael J. Spencer 1:f5ac63519541 2031 #endif
Michael J. Spencer 1:f5ac63519541 2032 }
Michael J. Spencer 1:f5ac63519541 2033
Michael J. Spencer 1:f5ac63519541 2034 /* Check if the file system object is valid or not */
Michael J. Spencer 1:f5ac63519541 2035 if (vol >= _VOLUMES) /* Is the drive number valid? */
Michael J. Spencer 1:f5ac63519541 2036 return FR_INVALID_DRIVE;
Michael J. Spencer 1:f5ac63519541 2037 *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
Michael J. Spencer 1:f5ac63519541 2038 if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
Michael J. Spencer 1:f5ac63519541 2039
Michael J. Spencer 1:f5ac63519541 2040 ENTER_FF(fs); /* Lock file system */
Michael J. Spencer 1:f5ac63519541 2041
Michael J. Spencer 1:f5ac63519541 2042 if (fs->fs_type) { /* If the logical drive has been mounted */
Michael J. Spencer 1:f5ac63519541 2043 stat = disk_status(fs->drv);
Michael J. Spencer 1:f5ac63519541 2044 if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
Michael J. Spencer 1:f5ac63519541 2045 if (!_FS_READONLY && chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
Michael J. Spencer 1:f5ac63519541 2046 return FR_WRITE_PROTECTED;
Michael J. Spencer 1:f5ac63519541 2047 return FR_OK; /* The file system object is valid */
Michael J. Spencer 1:f5ac63519541 2048 }
Michael J. Spencer 1:f5ac63519541 2049 }
Michael J. Spencer 1:f5ac63519541 2050
Michael J. Spencer 1:f5ac63519541 2051 /* The file system object is not valid. */
Michael J. Spencer 1:f5ac63519541 2052 /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
Michael J. Spencer 1:f5ac63519541 2053
Michael J. Spencer 1:f5ac63519541 2054 fs->fs_type = 0; /* Clear the file system object */
Michael J. Spencer 1:f5ac63519541 2055 fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
Michael J. Spencer 1:f5ac63519541 2056 stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
Michael J. Spencer 1:f5ac63519541 2057 if (stat & STA_NOINIT) /* Check if the initialization succeeded */
Michael J. Spencer 1:f5ac63519541 2058 return FR_NOT_READY; /* Failed to initialize due to no media or hard error */
Michael J. Spencer 1:f5ac63519541 2059 if (!_FS_READONLY && chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
Michael J. Spencer 1:f5ac63519541 2060 return FR_WRITE_PROTECTED;
Michael J. Spencer 1:f5ac63519541 2061 #if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
Michael J. Spencer 1:f5ac63519541 2062 if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2063 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 2064 #endif
Michael J. Spencer 1:f5ac63519541 2065 /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */
Michael J. Spencer 1:f5ac63519541 2066 fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */
Michael J. Spencer 1:f5ac63519541 2067 if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */
Michael J. Spencer 1:f5ac63519541 2068 if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */
Michael J. Spencer 1:f5ac63519541 2069 /* Check the partition listed in the partition table */
Michael J. Spencer 1:f5ac63519541 2070 pi = LD2PT(vol);
Michael J. Spencer 1:f5ac63519541 2071 if (pi) pi--;
Michael J. Spencer 1:f5ac63519541 2072 tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */
Michael J. Spencer 1:f5ac63519541 2073 if (tbl[4]) { /* Is the partition existing? */
Michael J. Spencer 1:f5ac63519541 2074 bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
Michael J. Spencer 1:f5ac63519541 2075 fmt = check_fs(fs, bsect); /* Check the partition */
Michael J. Spencer 1:f5ac63519541 2076 }
Michael J. Spencer 1:f5ac63519541 2077 }
Michael J. Spencer 1:f5ac63519541 2078 if (fmt == 3) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 2079 if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
Michael J. Spencer 1:f5ac63519541 2080
Michael J. Spencer 1:f5ac63519541 2081 /* An FAT volume is found. Following code initializes the file system object */
Michael J. Spencer 1:f5ac63519541 2082
Michael J. Spencer 1:f5ac63519541 2083 if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
Michael J. Spencer 1:f5ac63519541 2084 return FR_NO_FILESYSTEM;
Michael J. Spencer 1:f5ac63519541 2085
Michael J. Spencer 1:f5ac63519541 2086 fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
Michael J. Spencer 1:f5ac63519541 2087 if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
Michael J. Spencer 1:f5ac63519541 2088 fs->fsize = fasize;
Michael J. Spencer 1:f5ac63519541 2089
Michael J. Spencer 1:f5ac63519541 2090 fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
Michael J. Spencer 1:f5ac63519541 2091 if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
Michael J. Spencer 1:f5ac63519541 2092 fasize *= b; /* Number of sectors for FAT area */
Michael J. Spencer 1:f5ac63519541 2093
Michael J. Spencer 1:f5ac63519541 2094 fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
Michael J. Spencer 1:f5ac63519541 2095 if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
Michael J. Spencer 1:f5ac63519541 2096
Michael J. Spencer 1:f5ac63519541 2097 fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
Michael J. Spencer 1:f5ac63519541 2098 if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
Michael J. Spencer 1:f5ac63519541 2099
Michael J. Spencer 1:f5ac63519541 2100 tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
Michael J. Spencer 1:f5ac63519541 2101 if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
Michael J. Spencer 1:f5ac63519541 2102
Michael J. Spencer 1:f5ac63519541 2103 nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
Michael J. Spencer 1:f5ac63519541 2104 if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
Michael J. Spencer 1:f5ac63519541 2105
Michael J. Spencer 1:f5ac63519541 2106 /* Determine the FAT sub type */
Michael J. Spencer 1:f5ac63519541 2107 sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+FATFS_DIR */
Michael J. Spencer 1:f5ac63519541 2108 if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
Michael J. Spencer 1:f5ac63519541 2109 nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
Michael J. Spencer 1:f5ac63519541 2110 if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
Michael J. Spencer 1:f5ac63519541 2111 fmt = FS_FAT12;
Michael J. Spencer 1:f5ac63519541 2112 if (nclst >= MIN_FAT16) fmt = FS_FAT16;
Michael J. Spencer 1:f5ac63519541 2113 if (nclst >= MIN_FAT32) fmt = FS_FAT32;
Michael J. Spencer 1:f5ac63519541 2114
Michael J. Spencer 1:f5ac63519541 2115 /* Boundaries and Limits */
Michael J. Spencer 1:f5ac63519541 2116 fs->n_fatent = nclst + 2; /* Number of FAT entries */
Michael J. Spencer 1:f5ac63519541 2117 fs->database = bsect + sysect; /* Data start sector */
Michael J. Spencer 1:f5ac63519541 2118 fs->fatbase = bsect + nrsv; /* FAT start sector */
Michael J. Spencer 1:f5ac63519541 2119 if (fmt == FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 2120 if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
Michael J. Spencer 1:f5ac63519541 2121 fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
Michael J. Spencer 1:f5ac63519541 2122 szbfat = fs->n_fatent * 4; /* (Required FAT size) */
Michael J. Spencer 1:f5ac63519541 2123 } else {
Michael J. Spencer 1:f5ac63519541 2124 if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
Michael J. Spencer 1:f5ac63519541 2125 fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
Michael J. Spencer 1:f5ac63519541 2126 szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
Michael J. Spencer 1:f5ac63519541 2127 fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
Michael J. Spencer 1:f5ac63519541 2128 }
Michael J. Spencer 1:f5ac63519541 2129 if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
Michael J. Spencer 1:f5ac63519541 2130 return FR_NO_FILESYSTEM;
Michael J. Spencer 1:f5ac63519541 2131
Michael J. Spencer 1:f5ac63519541 2132 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2133 /* Initialize cluster allocation information */
Michael J. Spencer 1:f5ac63519541 2134 fs->free_clust = 0xFFFFFFFF;
Michael J. Spencer 1:f5ac63519541 2135 fs->last_clust = 0;
Michael J. Spencer 1:f5ac63519541 2136
Michael J. Spencer 1:f5ac63519541 2137 /* Get fsinfo if available */
Michael J. Spencer 1:f5ac63519541 2138 if (fmt == FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 2139 fs->fsi_flag = 0;
Michael J. Spencer 1:f5ac63519541 2140 fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
Michael J. Spencer 1:f5ac63519541 2141 if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
Michael J. Spencer 1:f5ac63519541 2142 LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
Michael J. Spencer 1:f5ac63519541 2143 LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
Michael J. Spencer 1:f5ac63519541 2144 LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
Michael J. Spencer 1:f5ac63519541 2145 fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
Michael J. Spencer 1:f5ac63519541 2146 fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
Michael J. Spencer 1:f5ac63519541 2147 }
Michael J. Spencer 1:f5ac63519541 2148 }
Michael J. Spencer 1:f5ac63519541 2149 #endif
Michael J. Spencer 1:f5ac63519541 2150 fs->fs_type = fmt; /* FAT sub-type */
Michael J. Spencer 1:f5ac63519541 2151 fs->id = ++Fsid; /* File system mount ID */
Michael J. Spencer 1:f5ac63519541 2152 fs->winsect = 0; /* Invalidate sector cache */
Michael J. Spencer 1:f5ac63519541 2153 fs->wflag = 0;
Michael J. Spencer 1:f5ac63519541 2154 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 2155 fs->cdir = 0; /* Current directory (root dir) */
Michael J. Spencer 1:f5ac63519541 2156 #endif
Michael J. Spencer 1:f5ac63519541 2157 #if _FS_SHARE /* Clear file lock semaphores */
Michael J. Spencer 1:f5ac63519541 2158 clear_lock(fs);
Michael J. Spencer 1:f5ac63519541 2159 #endif
Michael J. Spencer 1:f5ac63519541 2160
Michael J. Spencer 1:f5ac63519541 2161 return FR_OK;
Michael J. Spencer 1:f5ac63519541 2162 }
Michael J. Spencer 1:f5ac63519541 2163
Michael J. Spencer 1:f5ac63519541 2164
Michael J. Spencer 1:f5ac63519541 2165
Michael J. Spencer 1:f5ac63519541 2166
Michael J. Spencer 1:f5ac63519541 2167 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2168 /* Check if the file/dir object is valid or not */
Michael J. Spencer 1:f5ac63519541 2169 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2170
Michael J. Spencer 1:f5ac63519541 2171 static
Michael J. Spencer 1:f5ac63519541 2172 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
Michael J. Spencer 1:f5ac63519541 2173 FATFS *fs, /* Pointer to the file system object */
Michael J. Spencer 1:f5ac63519541 2174 WORD id /* Member id of the target object to be checked */
Michael J. Spencer 1:f5ac63519541 2175 )
Michael J. Spencer 1:f5ac63519541 2176 {
Michael J. Spencer 1:f5ac63519541 2177 if (!fs || !fs->fs_type || fs->id != id)
Michael J. Spencer 1:f5ac63519541 2178 return FR_INVALID_OBJECT;
Michael J. Spencer 1:f5ac63519541 2179
Michael J. Spencer 1:f5ac63519541 2180 ENTER_FF(fs); /* Lock file system */
Michael J. Spencer 1:f5ac63519541 2181
Michael J. Spencer 1:f5ac63519541 2182 if (disk_status(fs->drv) & STA_NOINIT)
Michael J. Spencer 1:f5ac63519541 2183 return FR_NOT_READY;
Michael J. Spencer 1:f5ac63519541 2184
Michael J. Spencer 1:f5ac63519541 2185 return FR_OK;
Michael J. Spencer 1:f5ac63519541 2186 }
Michael J. Spencer 1:f5ac63519541 2187
Michael J. Spencer 1:f5ac63519541 2188
Michael J. Spencer 1:f5ac63519541 2189
Michael J. Spencer 1:f5ac63519541 2190
Michael J. Spencer 1:f5ac63519541 2191 /*--------------------------------------------------------------------------
Michael J. Spencer 1:f5ac63519541 2192
Michael J. Spencer 1:f5ac63519541 2193 Public Functions
Michael J. Spencer 1:f5ac63519541 2194
Michael J. Spencer 1:f5ac63519541 2195 --------------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2196
Michael J. Spencer 1:f5ac63519541 2197
Michael J. Spencer 1:f5ac63519541 2198
Michael J. Spencer 1:f5ac63519541 2199 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2200 /* Mount/Unmount a Logical Drive */
Michael J. Spencer 1:f5ac63519541 2201 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2202
Michael J. Spencer 1:f5ac63519541 2203 FRESULT f_mount (
Michael J. Spencer 1:f5ac63519541 2204 BYTE vol, /* Logical drive number to be mounted/unmounted */
Michael J. Spencer 1:f5ac63519541 2205 FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
Michael J. Spencer 1:f5ac63519541 2206 )
Michael J. Spencer 1:f5ac63519541 2207 {
Michael J. Spencer 1:f5ac63519541 2208 FATFS *rfs;
Michael J. Spencer 1:f5ac63519541 2209
Michael J. Spencer 1:f5ac63519541 2210
Michael J. Spencer 1:f5ac63519541 2211 if (vol >= _VOLUMES) /* Check if the drive number is valid */
Michael J. Spencer 1:f5ac63519541 2212 return FR_INVALID_DRIVE;
Michael J. Spencer 1:f5ac63519541 2213 rfs = FatFs[vol]; /* Get current fs object */
Michael J. Spencer 1:f5ac63519541 2214
Michael J. Spencer 1:f5ac63519541 2215 if (rfs) {
Michael J. Spencer 1:f5ac63519541 2216 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 2217 clear_lock(rfs);
Michael J. Spencer 1:f5ac63519541 2218 #endif
Michael J. Spencer 1:f5ac63519541 2219 #if _FS_REENTRANT /* Discard sync object of the current volume */
Michael J. Spencer 1:f5ac63519541 2220 if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 2221 #endif
Michael J. Spencer 1:f5ac63519541 2222 rfs->fs_type = 0; /* Clear old fs object */
Michael J. Spencer 1:f5ac63519541 2223 }
Michael J. Spencer 1:f5ac63519541 2224
Michael J. Spencer 1:f5ac63519541 2225 if (fs) {
Michael J. Spencer 1:f5ac63519541 2226 fs->fs_type = 0; /* Clear new fs object */
Michael J. Spencer 1:f5ac63519541 2227 #if _FS_REENTRANT /* Create sync object for the new volume */
Michael J. Spencer 1:f5ac63519541 2228 if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 2229 #endif
Michael J. Spencer 1:f5ac63519541 2230 }
Michael J. Spencer 1:f5ac63519541 2231 FatFs[vol] = fs; /* Register new fs object */
Michael J. Spencer 1:f5ac63519541 2232
Michael J. Spencer 1:f5ac63519541 2233 return FR_OK;
Michael J. Spencer 1:f5ac63519541 2234 }
Michael J. Spencer 1:f5ac63519541 2235
Michael J. Spencer 1:f5ac63519541 2236
Michael J. Spencer 1:f5ac63519541 2237
Michael J. Spencer 1:f5ac63519541 2238
Michael J. Spencer 1:f5ac63519541 2239 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2240 /* Open or Create a File */
Michael J. Spencer 1:f5ac63519541 2241 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2242
Michael J. Spencer 1:f5ac63519541 2243 FRESULT f_open (
Michael J. Spencer 1:f5ac63519541 2244 FIL *fp, /* Pointer to the blank file object */
Michael J. Spencer 1:f5ac63519541 2245 const TCHAR *path, /* Pointer to the file name */
Michael J. Spencer 1:f5ac63519541 2246 BYTE mode /* Access mode and file open mode flags */
Michael J. Spencer 1:f5ac63519541 2247 )
Michael J. Spencer 1:f5ac63519541 2248 {
Michael J. Spencer 1:f5ac63519541 2249 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2250 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 2251 BYTE *dir;
Michael J. Spencer 1:f5ac63519541 2252 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 2253
Michael J. Spencer 1:f5ac63519541 2254
Michael J. Spencer 1:f5ac63519541 2255 fp->fs = 0; /* Clear file object */
Michael J. Spencer 1:f5ac63519541 2256
Michael J. Spencer 1:f5ac63519541 2257 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2258 mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
Michael J. Spencer 1:f5ac63519541 2259 res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
Michael J. Spencer 1:f5ac63519541 2260 #else
Michael J. Spencer 1:f5ac63519541 2261 mode &= FA_READ;
Michael J. Spencer 1:f5ac63519541 2262 res = chk_mounted(&path, &dj.fs, 0);
Michael J. Spencer 1:f5ac63519541 2263 #endif
Michael J. Spencer 1:f5ac63519541 2264 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 2265 if (res == FR_OK)
Michael J. Spencer 1:f5ac63519541 2266 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 2267 dir = dj.dir;
Michael J. Spencer 1:f5ac63519541 2268
Michael J. Spencer 1:f5ac63519541 2269 #if !_FS_READONLY /* R/W configuration */
Michael J. Spencer 1:f5ac63519541 2270 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2271 if (!dir) /* Current dir itself */
Michael J. Spencer 1:f5ac63519541 2272 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 2273 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 2274 else
Michael J. Spencer 1:f5ac63519541 2275 res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
Michael J. Spencer 1:f5ac63519541 2276 #endif
Michael J. Spencer 1:f5ac63519541 2277 }
Michael J. Spencer 1:f5ac63519541 2278 /* Create or Open a file */
Michael J. Spencer 1:f5ac63519541 2279 if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
Michael J. Spencer 1:f5ac63519541 2280 DWORD dw, cl;
Michael J. Spencer 1:f5ac63519541 2281
Michael J. Spencer 1:f5ac63519541 2282 if (res != FR_OK) { /* No file, create new */
Michael J. Spencer 1:f5ac63519541 2283 if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
Michael J. Spencer 1:f5ac63519541 2284 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 2285 res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
Michael J. Spencer 1:f5ac63519541 2286 #else
Michael J. Spencer 1:f5ac63519541 2287 res = dir_register(&dj);
Michael J. Spencer 1:f5ac63519541 2288 #endif
Michael J. Spencer 1:f5ac63519541 2289 mode |= FA_CREATE_ALWAYS; /* File is created */
Michael J. Spencer 1:f5ac63519541 2290 dir = dj.dir; /* New entry */
Michael J. Spencer 1:f5ac63519541 2291 }
Michael J. Spencer 1:f5ac63519541 2292 else { /* Any object is already existing */
Michael J. Spencer 1:f5ac63519541 2293 if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or FATFS_DIR) */
Michael J. Spencer 1:f5ac63519541 2294 res = FR_DENIED;
Michael J. Spencer 1:f5ac63519541 2295 } else {
Michael J. Spencer 1:f5ac63519541 2296 if (mode & FA_CREATE_NEW) /* Cannot create as new file */
Michael J. Spencer 1:f5ac63519541 2297 res = FR_EXIST;
Michael J. Spencer 1:f5ac63519541 2298 }
Michael J. Spencer 1:f5ac63519541 2299 }
Michael J. Spencer 1:f5ac63519541 2300 if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
Michael J. Spencer 1:f5ac63519541 2301 dw = get_fattime(); /* Created time */
Michael J. Spencer 1:f5ac63519541 2302 ST_DWORD(dir+DIR_CrtTime, dw);
Michael J. Spencer 1:f5ac63519541 2303 dir[DIR_Attr] = 0; /* Reset attribute */
Michael J. Spencer 1:f5ac63519541 2304 ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
Michael J. Spencer 1:f5ac63519541 2305 cl = LD_CLUST(dir); /* Get start cluster */
Michael J. Spencer 1:f5ac63519541 2306 ST_CLUST(dir, 0); /* cluster = 0 */
Michael J. Spencer 1:f5ac63519541 2307 dj.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 2308 if (cl) { /* Remove the cluster chain if exist */
Michael J. Spencer 1:f5ac63519541 2309 dw = dj.fs->winsect;
Michael J. Spencer 1:f5ac63519541 2310 res = remove_chain(dj.fs, cl);
Michael J. Spencer 1:f5ac63519541 2311 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2312 dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
Michael J. Spencer 1:f5ac63519541 2313 res = move_window(dj.fs, dw);
Michael J. Spencer 1:f5ac63519541 2314 }
Michael J. Spencer 1:f5ac63519541 2315 }
Michael J. Spencer 1:f5ac63519541 2316 }
Michael J. Spencer 1:f5ac63519541 2317 }
Michael J. Spencer 1:f5ac63519541 2318 else { /* Open an existing file */
Michael J. Spencer 1:f5ac63519541 2319 if (res == FR_OK) { /* Follow succeeded */
Michael J. Spencer 1:f5ac63519541 2320 if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
Michael J. Spencer 1:f5ac63519541 2321 res = FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 2322 } else {
Michael J. Spencer 1:f5ac63519541 2323 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
Michael J. Spencer 1:f5ac63519541 2324 res = FR_DENIED;
Michael J. Spencer 1:f5ac63519541 2325 }
Michael J. Spencer 1:f5ac63519541 2326 }
Michael J. Spencer 1:f5ac63519541 2327 }
Michael J. Spencer 1:f5ac63519541 2328 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2329 if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
Michael J. Spencer 1:f5ac63519541 2330 mode |= FA__WRITTEN;
Michael J. Spencer 1:f5ac63519541 2331 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
Michael J. Spencer 1:f5ac63519541 2332 fp->dir_ptr = dir;
Michael J. Spencer 1:f5ac63519541 2333 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 2334 fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
Michael J. Spencer 1:f5ac63519541 2335 if (!fp->lockid) res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 2336 #endif
Michael J. Spencer 1:f5ac63519541 2337 }
Michael J. Spencer 1:f5ac63519541 2338
Michael J. Spencer 1:f5ac63519541 2339 #else /* R/O configuration */
Michael J. Spencer 1:f5ac63519541 2340 if (res == FR_OK) { /* Follow succeeded */
Michael J. Spencer 1:f5ac63519541 2341 if (!dir) { /* Current dir itself */
Michael J. Spencer 1:f5ac63519541 2342 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 2343 } else {
Michael J. Spencer 1:f5ac63519541 2344 if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
Michael J. Spencer 1:f5ac63519541 2345 res = FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 2346 }
Michael J. Spencer 1:f5ac63519541 2347 }
Michael J. Spencer 1:f5ac63519541 2348 #endif
Michael J. Spencer 1:f5ac63519541 2349 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 2350
Michael J. Spencer 1:f5ac63519541 2351 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2352 fp->flag = mode; /* File access mode */
Michael J. Spencer 1:f5ac63519541 2353 fp->sclust = LD_CLUST(dir); /* File start cluster */
Michael J. Spencer 1:f5ac63519541 2354 fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
Michael J. Spencer 1:f5ac63519541 2355 fp->fptr = 0; /* File pointer */
Michael J. Spencer 1:f5ac63519541 2356 fp->dsect = 0;
Michael J. Spencer 1:f5ac63519541 2357 #if _USE_FASTSEEK
Michael J. Spencer 1:f5ac63519541 2358 fp->cltbl = 0; /* Normal seek mode */
Michael J. Spencer 1:f5ac63519541 2359 #endif
Michael J. Spencer 1:f5ac63519541 2360 fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
Michael J. Spencer 1:f5ac63519541 2361 }
Michael J. Spencer 1:f5ac63519541 2362
Michael J. Spencer 1:f5ac63519541 2363 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 2364 }
Michael J. Spencer 1:f5ac63519541 2365
Michael J. Spencer 1:f5ac63519541 2366
Michael J. Spencer 1:f5ac63519541 2367
Michael J. Spencer 1:f5ac63519541 2368
Michael J. Spencer 1:f5ac63519541 2369 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2370 /* Read File */
Michael J. Spencer 1:f5ac63519541 2371 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2372
Michael J. Spencer 1:f5ac63519541 2373 FRESULT f_read (
Michael J. Spencer 1:f5ac63519541 2374 FIL *fp, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 2375 void *buff, /* Pointer to data buffer */
Michael J. Spencer 1:f5ac63519541 2376 UINT btr, /* Number of bytes to read */
Michael J. Spencer 1:f5ac63519541 2377 UINT *br /* Pointer to number of bytes read */
Michael J. Spencer 1:f5ac63519541 2378 )
Michael J. Spencer 1:f5ac63519541 2379 {
Michael J. Spencer 1:f5ac63519541 2380 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2381 DWORD clst, sect, remain;
Michael J. Spencer 1:f5ac63519541 2382 UINT rcnt, cc;
Michael J. Spencer 1:f5ac63519541 2383 BYTE csect, *rbuff = (BYTE*)buff;
Michael J. Spencer 1:f5ac63519541 2384
Michael J. Spencer 1:f5ac63519541 2385
Michael J. Spencer 1:f5ac63519541 2386 *br = 0; /* Initialize byte counter */
Michael J. Spencer 1:f5ac63519541 2387
Michael J. Spencer 1:f5ac63519541 2388 res = validate(fp->fs, fp->id); /* Check validity */
Michael J. Spencer 1:f5ac63519541 2389 if (res != FR_OK) LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 2390 if (fp->flag & FA__ERROR) /* Aborted file? */
Michael J. Spencer 1:f5ac63519541 2391 LEAVE_FF(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2392 if (!(fp->flag & FA_READ)) /* Check access mode */
Michael J. Spencer 1:f5ac63519541 2393 LEAVE_FF(fp->fs, FR_DENIED);
Michael J. Spencer 1:f5ac63519541 2394 remain = fp->fsize - fp->fptr;
Michael J. Spencer 1:f5ac63519541 2395 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
Michael J. Spencer 1:f5ac63519541 2396
Michael J. Spencer 1:f5ac63519541 2397 for ( ; btr; /* Repeat until all data read */
Michael J. Spencer 1:f5ac63519541 2398 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
Michael J. Spencer 1:f5ac63519541 2399 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
Michael J. Spencer 1:f5ac63519541 2400 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
Michael J. Spencer 1:f5ac63519541 2401 if (!csect) { /* On the cluster boundary? */
Michael J. Spencer 1:f5ac63519541 2402 if (fp->fptr == 0) { /* On the top of the file? */
Michael J. Spencer 1:f5ac63519541 2403 clst = fp->sclust; /* Follow from the origin */
Michael J. Spencer 1:f5ac63519541 2404 } else { /* Middle or end of the file */
Michael J. Spencer 1:f5ac63519541 2405 #if _USE_FASTSEEK
Michael J. Spencer 1:f5ac63519541 2406 if (fp->cltbl)
Michael J. Spencer 1:f5ac63519541 2407 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
Michael J. Spencer 1:f5ac63519541 2408 else
Michael J. Spencer 1:f5ac63519541 2409 #endif
Michael J. Spencer 1:f5ac63519541 2410 clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
Michael J. Spencer 1:f5ac63519541 2411 }
Michael J. Spencer 1:f5ac63519541 2412 if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2413 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2414 fp->clust = clst; /* Update current cluster */
Michael J. Spencer 1:f5ac63519541 2415 }
Michael J. Spencer 1:f5ac63519541 2416 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
Michael J. Spencer 1:f5ac63519541 2417 if (!sect) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2418 sect += csect;
Michael J. Spencer 1:f5ac63519541 2419 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
Michael J. Spencer 1:f5ac63519541 2420 if (cc) { /* Read maximum contiguous sectors directly */
Michael J. Spencer 1:f5ac63519541 2421 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
Michael J. Spencer 1:f5ac63519541 2422 cc = fp->fs->csize - csect;
Michael J. Spencer 1:f5ac63519541 2423 if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2424 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2425 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
Michael J. Spencer 1:f5ac63519541 2426 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2427 if (fp->fs->wflag && fp->fs->winsect - sect < cc)
Michael J. Spencer 1:f5ac63519541 2428 mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
Michael J. Spencer 1:f5ac63519541 2429 #else
Michael J. Spencer 1:f5ac63519541 2430 if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
Michael J. Spencer 1:f5ac63519541 2431 mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
Michael J. Spencer 1:f5ac63519541 2432 #endif
Michael J. Spencer 1:f5ac63519541 2433 #endif
Michael J. Spencer 1:f5ac63519541 2434 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
Michael J. Spencer 1:f5ac63519541 2435 continue;
Michael J. Spencer 1:f5ac63519541 2436 }
Michael J. Spencer 1:f5ac63519541 2437 #if !_FS_TINY
Michael J. Spencer 1:f5ac63519541 2438 if (fp->dsect != sect) { /* Load data sector if not in cache */
Michael J. Spencer 1:f5ac63519541 2439 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2440 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
Michael J. Spencer 1:f5ac63519541 2441 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2442 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2443 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2444 }
Michael J. Spencer 1:f5ac63519541 2445 #endif
Michael J. Spencer 1:f5ac63519541 2446 if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
Michael J. Spencer 1:f5ac63519541 2447 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2448 }
Michael J. Spencer 1:f5ac63519541 2449 #endif
Michael J. Spencer 1:f5ac63519541 2450 fp->dsect = sect;
Michael J. Spencer 1:f5ac63519541 2451 }
Michael J. Spencer 1:f5ac63519541 2452 rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
Michael J. Spencer 1:f5ac63519541 2453 if (rcnt > btr) rcnt = btr;
Michael J. Spencer 1:f5ac63519541 2454 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2455 if (move_window(fp->fs, fp->dsect)) /* Move sector window */
Michael J. Spencer 1:f5ac63519541 2456 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2457 mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
Michael J. Spencer 1:f5ac63519541 2458 #else
Michael J. Spencer 1:f5ac63519541 2459 mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
Michael J. Spencer 1:f5ac63519541 2460 #endif
Michael J. Spencer 1:f5ac63519541 2461 }
Michael J. Spencer 1:f5ac63519541 2462
Michael J. Spencer 1:f5ac63519541 2463 LEAVE_FF(fp->fs, FR_OK);
Michael J. Spencer 1:f5ac63519541 2464 }
Michael J. Spencer 1:f5ac63519541 2465
Michael J. Spencer 1:f5ac63519541 2466
Michael J. Spencer 1:f5ac63519541 2467
Michael J. Spencer 1:f5ac63519541 2468
Michael J. Spencer 1:f5ac63519541 2469 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2470 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2471 /* Write File */
Michael J. Spencer 1:f5ac63519541 2472 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2473
Michael J. Spencer 1:f5ac63519541 2474 FRESULT f_write (
Michael J. Spencer 1:f5ac63519541 2475 FIL *fp, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 2476 const void *buff, /* Pointer to the data to be written */
Michael J. Spencer 1:f5ac63519541 2477 UINT btw, /* Number of bytes to write */
Michael J. Spencer 1:f5ac63519541 2478 UINT *bw /* Pointer to number of bytes written */
Michael J. Spencer 1:f5ac63519541 2479 )
Michael J. Spencer 1:f5ac63519541 2480 {
Michael J. Spencer 1:f5ac63519541 2481 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2482 DWORD clst, sect;
Michael J. Spencer 1:f5ac63519541 2483 UINT wcnt, cc;
Michael J. Spencer 1:f5ac63519541 2484 const BYTE *wbuff = (const BYTE*)buff;
Michael J. Spencer 1:f5ac63519541 2485 BYTE csect;
Michael J. Spencer 1:f5ac63519541 2486
Michael J. Spencer 1:f5ac63519541 2487
Michael J. Spencer 1:f5ac63519541 2488 *bw = 0; /* Initialize byte counter */
Michael J. Spencer 1:f5ac63519541 2489
Michael J. Spencer 1:f5ac63519541 2490 res = validate(fp->fs, fp->id); /* Check validity */
Michael J. Spencer 1:f5ac63519541 2491 if (res != FR_OK) LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 2492 if (fp->flag & FA__ERROR) /* Aborted file? */
Michael J. Spencer 1:f5ac63519541 2493 LEAVE_FF(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2494 if (!(fp->flag & FA_WRITE)) /* Check access mode */
Michael J. Spencer 1:f5ac63519541 2495 LEAVE_FF(fp->fs, FR_DENIED);
Michael J. Spencer 1:f5ac63519541 2496 if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
Michael J. Spencer 1:f5ac63519541 2497
Michael J. Spencer 1:f5ac63519541 2498 for ( ; btw; /* Repeat until all data written */
Michael J. Spencer 1:f5ac63519541 2499 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
Michael J. Spencer 1:f5ac63519541 2500 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
Michael J. Spencer 1:f5ac63519541 2501 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
Michael J. Spencer 1:f5ac63519541 2502 if (!csect) { /* On the cluster boundary? */
Michael J. Spencer 1:f5ac63519541 2503 if (fp->fptr == 0) { /* On the top of the file? */
Michael J. Spencer 1:f5ac63519541 2504 clst = fp->sclust; /* Follow from the origin */
Michael J. Spencer 1:f5ac63519541 2505 if (clst == 0) /* When no cluster is allocated, */
Michael J. Spencer 1:f5ac63519541 2506 fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
Michael J. Spencer 1:f5ac63519541 2507 } else { /* Middle or end of the file */
Michael J. Spencer 1:f5ac63519541 2508 #if _USE_FASTSEEK
Michael J. Spencer 1:f5ac63519541 2509 if (fp->cltbl)
Michael J. Spencer 1:f5ac63519541 2510 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
Michael J. Spencer 1:f5ac63519541 2511 else
Michael J. Spencer 1:f5ac63519541 2512 #endif
Michael J. Spencer 1:f5ac63519541 2513 clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
Michael J. Spencer 1:f5ac63519541 2514 }
Michael J. Spencer 1:f5ac63519541 2515 if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
Michael J. Spencer 1:f5ac63519541 2516 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2517 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2518 fp->clust = clst; /* Update current cluster */
Michael J. Spencer 1:f5ac63519541 2519 }
Michael J. Spencer 1:f5ac63519541 2520 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2521 if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
Michael J. Spencer 1:f5ac63519541 2522 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2523 #else
Michael J. Spencer 1:f5ac63519541 2524 if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
Michael J. Spencer 1:f5ac63519541 2525 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2526 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2527 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2528 }
Michael J. Spencer 1:f5ac63519541 2529 #endif
Michael J. Spencer 1:f5ac63519541 2530 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
Michael J. Spencer 1:f5ac63519541 2531 if (!sect) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2532 sect += csect;
Michael J. Spencer 1:f5ac63519541 2533 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
Michael J. Spencer 1:f5ac63519541 2534 if (cc) { /* Write maximum contiguous sectors directly */
Michael J. Spencer 1:f5ac63519541 2535 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
Michael J. Spencer 1:f5ac63519541 2536 cc = fp->fs->csize - csect;
Michael J. Spencer 1:f5ac63519541 2537 if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2538 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2539 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2540 if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
Michael J. Spencer 1:f5ac63519541 2541 mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
Michael J. Spencer 1:f5ac63519541 2542 fp->fs->wflag = 0;
Michael J. Spencer 1:f5ac63519541 2543 }
Michael J. Spencer 1:f5ac63519541 2544 #else
Michael J. Spencer 1:f5ac63519541 2545 if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
Michael J. Spencer 1:f5ac63519541 2546 mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
Michael J. Spencer 1:f5ac63519541 2547 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2548 }
Michael J. Spencer 1:f5ac63519541 2549 #endif
Michael J. Spencer 1:f5ac63519541 2550 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
Michael J. Spencer 1:f5ac63519541 2551 continue;
Michael J. Spencer 1:f5ac63519541 2552 }
Michael J. Spencer 1:f5ac63519541 2553 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2554 if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
Michael J. Spencer 1:f5ac63519541 2555 if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2556 fp->fs->winsect = sect;
Michael J. Spencer 1:f5ac63519541 2557 }
Michael J. Spencer 1:f5ac63519541 2558 #else
Michael J. Spencer 1:f5ac63519541 2559 if (fp->dsect != sect) { /* Fill sector cache with file data */
Michael J. Spencer 1:f5ac63519541 2560 if (fp->fptr < fp->fsize &&
Michael J. Spencer 1:f5ac63519541 2561 disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2562 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2563 }
Michael J. Spencer 1:f5ac63519541 2564 #endif
Michael J. Spencer 1:f5ac63519541 2565 fp->dsect = sect;
Michael J. Spencer 1:f5ac63519541 2566 }
Michael J. Spencer 1:f5ac63519541 2567 wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
Michael J. Spencer 1:f5ac63519541 2568 if (wcnt > btw) wcnt = btw;
Michael J. Spencer 1:f5ac63519541 2569 #if _FS_TINY
Michael J. Spencer 1:f5ac63519541 2570 if (move_window(fp->fs, fp->dsect)) /* Move sector window */
Michael J. Spencer 1:f5ac63519541 2571 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2572 mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
Michael J. Spencer 1:f5ac63519541 2573 fp->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 2574 #else
Michael J. Spencer 1:f5ac63519541 2575 mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
Michael J. Spencer 1:f5ac63519541 2576 fp->flag |= FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2577 #endif
Michael J. Spencer 1:f5ac63519541 2578 }
Michael J. Spencer 1:f5ac63519541 2579
Michael J. Spencer 1:f5ac63519541 2580 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
Michael J. Spencer 1:f5ac63519541 2581 fp->flag |= FA__WRITTEN; /* Set file change flag */
Michael J. Spencer 1:f5ac63519541 2582
Michael J. Spencer 1:f5ac63519541 2583 LEAVE_FF(fp->fs, FR_OK);
Michael J. Spencer 1:f5ac63519541 2584 }
Michael J. Spencer 1:f5ac63519541 2585
Michael J. Spencer 1:f5ac63519541 2586
Michael J. Spencer 1:f5ac63519541 2587
Michael J. Spencer 1:f5ac63519541 2588
Michael J. Spencer 1:f5ac63519541 2589 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2590 /* Synchronize the File Object */
Michael J. Spencer 1:f5ac63519541 2591 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2592
Michael J. Spencer 1:f5ac63519541 2593 FRESULT f_sync (
Michael J. Spencer 1:f5ac63519541 2594 FIL *fp /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 2595 )
Michael J. Spencer 1:f5ac63519541 2596 {
Michael J. Spencer 1:f5ac63519541 2597 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2598 DWORD tim;
Michael J. Spencer 1:f5ac63519541 2599 BYTE *dir;
Michael J. Spencer 1:f5ac63519541 2600
Michael J. Spencer 1:f5ac63519541 2601
Michael J. Spencer 1:f5ac63519541 2602 res = validate(fp->fs, fp->id); /* Check validity of the object */
Michael J. Spencer 1:f5ac63519541 2603 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2604 if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
Michael J. Spencer 1:f5ac63519541 2605 #if !_FS_TINY /* Write-back dirty buffer */
Michael J. Spencer 1:f5ac63519541 2606 if (fp->flag & FA__DIRTY) {
Michael J. Spencer 1:f5ac63519541 2607 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2608 LEAVE_FF(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2609 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2610 }
Michael J. Spencer 1:f5ac63519541 2611 #endif
Michael J. Spencer 1:f5ac63519541 2612 /* Update the directory entry */
Michael J. Spencer 1:f5ac63519541 2613 res = move_window(fp->fs, fp->dir_sect);
Michael J. Spencer 1:f5ac63519541 2614 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2615 dir = fp->dir_ptr;
Michael J. Spencer 1:f5ac63519541 2616 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
Michael J. Spencer 1:f5ac63519541 2617 ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
Michael J. Spencer 1:f5ac63519541 2618 ST_CLUST(dir, fp->sclust); /* Update start cluster */
Michael J. Spencer 1:f5ac63519541 2619 tim = get_fattime(); /* Update updated time */
Michael J. Spencer 1:f5ac63519541 2620 ST_DWORD(dir+DIR_WrtTime, tim);
Michael J. Spencer 1:f5ac63519541 2621 fp->flag &= ~FA__WRITTEN;
Michael J. Spencer 1:f5ac63519541 2622 fp->fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 2623 res = sync(fp->fs);
Michael J. Spencer 1:f5ac63519541 2624 }
Michael J. Spencer 1:f5ac63519541 2625 }
Michael J. Spencer 1:f5ac63519541 2626 }
Michael J. Spencer 1:f5ac63519541 2627
Michael J. Spencer 1:f5ac63519541 2628 LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 2629 }
Michael J. Spencer 1:f5ac63519541 2630
Michael J. Spencer 1:f5ac63519541 2631 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 2632
Michael J. Spencer 1:f5ac63519541 2633
Michael J. Spencer 1:f5ac63519541 2634
Michael J. Spencer 1:f5ac63519541 2635
Michael J. Spencer 1:f5ac63519541 2636 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2637 /* Close File */
Michael J. Spencer 1:f5ac63519541 2638 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2639
Michael J. Spencer 1:f5ac63519541 2640 FRESULT f_close (
Michael J. Spencer 1:f5ac63519541 2641 FIL *fp /* Pointer to the file object to be closed */
Michael J. Spencer 1:f5ac63519541 2642 )
Michael J. Spencer 1:f5ac63519541 2643 {
Michael J. Spencer 1:f5ac63519541 2644 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2645
Michael J. Spencer 1:f5ac63519541 2646 #if _FS_READONLY
Michael J. Spencer 1:f5ac63519541 2647 FATFS *fs = fp->fs;
Michael J. Spencer 1:f5ac63519541 2648 res = validate(fs, fp->id);
Michael J. Spencer 1:f5ac63519541 2649 if (res == FR_OK) fp->fs = 0; /* Discard file object */
Michael J. Spencer 1:f5ac63519541 2650 LEAVE_FF(fs, res);
Michael J. Spencer 1:f5ac63519541 2651
Michael J. Spencer 1:f5ac63519541 2652 #else
Michael J. Spencer 1:f5ac63519541 2653 res = f_sync(fp); /* Flush cached data */
Michael J. Spencer 1:f5ac63519541 2654 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 2655 if (res == FR_OK) { /* Decrement open counter */
Michael J. Spencer 1:f5ac63519541 2656 #if _FS_REENTRANT
Michael J. Spencer 1:f5ac63519541 2657 res = validate(fp->fs, fp->id);
Michael J. Spencer 1:f5ac63519541 2658 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2659 res = dec_lock(fp->lockid);
Michael J. Spencer 1:f5ac63519541 2660 unlock_fs(fp->fs, FR_OK);
Michael J. Spencer 1:f5ac63519541 2661 }
Michael J. Spencer 1:f5ac63519541 2662 #else
Michael J. Spencer 1:f5ac63519541 2663 res = dec_lock(fp->lockid);
Michael J. Spencer 1:f5ac63519541 2664 #endif
Michael J. Spencer 1:f5ac63519541 2665 }
Michael J. Spencer 1:f5ac63519541 2666 #endif
Michael J. Spencer 1:f5ac63519541 2667 if (res == FR_OK) fp->fs = 0; /* Discard file object */
Michael J. Spencer 1:f5ac63519541 2668 return res;
Michael J. Spencer 1:f5ac63519541 2669 #endif
Michael J. Spencer 1:f5ac63519541 2670 }
Michael J. Spencer 1:f5ac63519541 2671
Michael J. Spencer 1:f5ac63519541 2672
Michael J. Spencer 1:f5ac63519541 2673
Michael J. Spencer 1:f5ac63519541 2674
Michael J. Spencer 1:f5ac63519541 2675 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2676 /* Current Drive/Directory Handlings */
Michael J. Spencer 1:f5ac63519541 2677 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2678
Michael J. Spencer 1:f5ac63519541 2679 #if _FS_RPATH >= 1
Michael J. Spencer 1:f5ac63519541 2680
Michael J. Spencer 1:f5ac63519541 2681 FRESULT f_chdrive (
Michael J. Spencer 1:f5ac63519541 2682 BYTE drv /* Drive number */
Michael J. Spencer 1:f5ac63519541 2683 )
Michael J. Spencer 1:f5ac63519541 2684 {
Michael J. Spencer 1:f5ac63519541 2685 if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
Michael J. Spencer 1:f5ac63519541 2686
Michael J. Spencer 1:f5ac63519541 2687 CurrVol = drv;
Michael J. Spencer 1:f5ac63519541 2688
Michael J. Spencer 1:f5ac63519541 2689 return FR_OK;
Michael J. Spencer 1:f5ac63519541 2690 }
Michael J. Spencer 1:f5ac63519541 2691
Michael J. Spencer 1:f5ac63519541 2692
Michael J. Spencer 1:f5ac63519541 2693
Michael J. Spencer 1:f5ac63519541 2694 FRESULT f_chdir (
Michael J. Spencer 1:f5ac63519541 2695 const TCHAR *path /* Pointer to the directory path */
Michael J. Spencer 1:f5ac63519541 2696 )
Michael J. Spencer 1:f5ac63519541 2697 {
Michael J. Spencer 1:f5ac63519541 2698 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2699 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 2700 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 2701
Michael J. Spencer 1:f5ac63519541 2702
Michael J. Spencer 1:f5ac63519541 2703 res = chk_mounted(&path, &dj.fs, 0);
Michael J. Spencer 1:f5ac63519541 2704 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2705 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 2706 res = follow_path(&dj, path); /* Follow the path */
Michael J. Spencer 1:f5ac63519541 2707 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 2708 if (res == FR_OK) { /* Follow completed */
Michael J. Spencer 1:f5ac63519541 2709 if (!dj.dir) {
Michael J. Spencer 1:f5ac63519541 2710 dj.fs->cdir = dj.sclust; /* Start directory itself */
Michael J. Spencer 1:f5ac63519541 2711 } else {
Michael J. Spencer 1:f5ac63519541 2712 if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
Michael J. Spencer 1:f5ac63519541 2713 dj.fs->cdir = LD_CLUST(dj.dir);
Michael J. Spencer 1:f5ac63519541 2714 else
Michael J. Spencer 1:f5ac63519541 2715 res = FR_NO_PATH; /* Reached but a file */
Michael J. Spencer 1:f5ac63519541 2716 }
Michael J. Spencer 1:f5ac63519541 2717 }
Michael J. Spencer 1:f5ac63519541 2718 if (res == FR_NO_FILE) res = FR_NO_PATH;
Michael J. Spencer 1:f5ac63519541 2719 }
Michael J. Spencer 1:f5ac63519541 2720
Michael J. Spencer 1:f5ac63519541 2721 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 2722 }
Michael J. Spencer 1:f5ac63519541 2723
Michael J. Spencer 1:f5ac63519541 2724
Michael J. Spencer 1:f5ac63519541 2725 #if _FS_RPATH >= 2
Michael J. Spencer 1:f5ac63519541 2726 FRESULT f_getcwd (
Michael J. Spencer 1:f5ac63519541 2727 TCHAR *path, /* Pointer to the directory path */
Michael J. Spencer 1:f5ac63519541 2728 UINT sz_path /* Size of path */
Michael J. Spencer 1:f5ac63519541 2729 )
Michael J. Spencer 1:f5ac63519541 2730 {
Michael J. Spencer 1:f5ac63519541 2731 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2732 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 2733 UINT i, n;
Michael J. Spencer 1:f5ac63519541 2734 DWORD ccl;
Michael J. Spencer 1:f5ac63519541 2735 TCHAR *tp;
Michael J. Spencer 1:f5ac63519541 2736 FILINFO fno;
Michael J. Spencer 1:f5ac63519541 2737 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 2738
Michael J. Spencer 1:f5ac63519541 2739
Michael J. Spencer 1:f5ac63519541 2740 *path = 0;
Michael J. Spencer 1:f5ac63519541 2741 res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */
Michael J. Spencer 1:f5ac63519541 2742 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2743 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 2744 i = sz_path; /* Bottom of buffer (dir stack base) */
Michael J. Spencer 1:f5ac63519541 2745 dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
Michael J. Spencer 1:f5ac63519541 2746 while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
Michael J. Spencer 1:f5ac63519541 2747 res = dir_sdi(&dj, 1); /* Get parent dir */
Michael J. Spencer 1:f5ac63519541 2748 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 2749 res = dir_read(&dj);
Michael J. Spencer 1:f5ac63519541 2750 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 2751 dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */
Michael J. Spencer 1:f5ac63519541 2752 res = dir_sdi(&dj, 0);
Michael J. Spencer 1:f5ac63519541 2753 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 2754 do { /* Find the entry links to the child dir */
Michael J. Spencer 1:f5ac63519541 2755 res = dir_read(&dj);
Michael J. Spencer 1:f5ac63519541 2756 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 2757 if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */
Michael J. Spencer 1:f5ac63519541 2758 res = dir_next(&dj, 0);
Michael J. Spencer 1:f5ac63519541 2759 } while (res == FR_OK);
Michael J. Spencer 1:f5ac63519541 2760 if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
Michael J. Spencer 1:f5ac63519541 2761 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 2762 #if _USE_LFN
Michael J. Spencer 1:f5ac63519541 2763 fno.lfname = path;
Michael J. Spencer 1:f5ac63519541 2764 fno.lfsize = i;
Michael J. Spencer 1:f5ac63519541 2765 #endif
Michael J. Spencer 1:f5ac63519541 2766 get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
Michael J. Spencer 1:f5ac63519541 2767 tp = fno.fname;
Michael J. Spencer 1:f5ac63519541 2768 if (_USE_LFN && *path) tp = path;
Michael J. Spencer 1:f5ac63519541 2769 for (n = 0; tp[n]; n++) ;
Michael J. Spencer 1:f5ac63519541 2770 if (i < n + 3) {
Michael J. Spencer 1:f5ac63519541 2771 res = FR_NOT_ENOUGH_CORE; break;
Michael J. Spencer 1:f5ac63519541 2772 }
Michael J. Spencer 1:f5ac63519541 2773 while (n) path[--i] = tp[--n];
Michael J. Spencer 1:f5ac63519541 2774 path[--i] = '/';
Michael J. Spencer 1:f5ac63519541 2775 }
Michael J. Spencer 1:f5ac63519541 2776 tp = path;
Michael J. Spencer 1:f5ac63519541 2777 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2778 *tp++ = '0' + CurrVol; /* Put drive number */
Michael J. Spencer 1:f5ac63519541 2779 *tp++ = ':';
Michael J. Spencer 1:f5ac63519541 2780 if (i == sz_path) { /* Root-dir */
Michael J. Spencer 1:f5ac63519541 2781 *tp++ = '/';
Michael J. Spencer 1:f5ac63519541 2782 } else { /* Sub-dir */
Michael J. Spencer 1:f5ac63519541 2783 do /* Add stacked path str */
Michael J. Spencer 1:f5ac63519541 2784 *tp++ = path[i++];
Michael J. Spencer 1:f5ac63519541 2785 while (i < sz_path);
Michael J. Spencer 1:f5ac63519541 2786 }
Michael J. Spencer 1:f5ac63519541 2787 }
Michael J. Spencer 1:f5ac63519541 2788 *tp = 0;
Michael J. Spencer 1:f5ac63519541 2789 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 2790 }
Michael J. Spencer 1:f5ac63519541 2791
Michael J. Spencer 1:f5ac63519541 2792 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 2793 }
Michael J. Spencer 1:f5ac63519541 2794 #endif /* _FS_RPATH >= 2 */
Michael J. Spencer 1:f5ac63519541 2795 #endif /* _FS_RPATH >= 1 */
Michael J. Spencer 1:f5ac63519541 2796
Michael J. Spencer 1:f5ac63519541 2797
Michael J. Spencer 1:f5ac63519541 2798
Michael J. Spencer 1:f5ac63519541 2799 #if _FS_MINIMIZE <= 2
Michael J. Spencer 1:f5ac63519541 2800 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2801 /* Seek File R/W Pointer */
Michael J. Spencer 1:f5ac63519541 2802 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2803
Michael J. Spencer 1:f5ac63519541 2804 FRESULT f_lseek (
Michael J. Spencer 1:f5ac63519541 2805 FIL *fp, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 2806 DWORD ofs /* File pointer from top of file */
Michael J. Spencer 1:f5ac63519541 2807 )
Michael J. Spencer 1:f5ac63519541 2808 {
Michael J. Spencer 1:f5ac63519541 2809 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2810
Michael J. Spencer 1:f5ac63519541 2811
Michael J. Spencer 1:f5ac63519541 2812 res = validate(fp->fs, fp->id); /* Check validity of the object */
Michael J. Spencer 1:f5ac63519541 2813 if (res != FR_OK) LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 2814 if (fp->flag & FA__ERROR) /* Check abort flag */
Michael J. Spencer 1:f5ac63519541 2815 LEAVE_FF(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2816
Michael J. Spencer 1:f5ac63519541 2817 #if _USE_FASTSEEK
Michael J. Spencer 1:f5ac63519541 2818 if (fp->cltbl) { /* Fast seek */
Michael J. Spencer 1:f5ac63519541 2819 DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
Michael J. Spencer 1:f5ac63519541 2820
Michael J. Spencer 1:f5ac63519541 2821 if (ofs == CREATE_LINKMAP) { /* Create CLMT */
Michael J. Spencer 1:f5ac63519541 2822 tbl = fp->cltbl;
Michael J. Spencer 1:f5ac63519541 2823 tlen = *tbl++; ulen = 2; /* Given table size and required table size */
Michael J. Spencer 1:f5ac63519541 2824 cl = fp->sclust; /* Top of the chain */
Michael J. Spencer 1:f5ac63519541 2825 if (cl) {
Michael J. Spencer 1:f5ac63519541 2826 do {
Michael J. Spencer 1:f5ac63519541 2827 /* Get a fragment */
Michael J. Spencer 1:f5ac63519541 2828 tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
Michael J. Spencer 1:f5ac63519541 2829 do {
Michael J. Spencer 1:f5ac63519541 2830 pcl = cl; ncl++;
Michael J. Spencer 1:f5ac63519541 2831 cl = get_fat(fp->fs, cl);
Michael J. Spencer 1:f5ac63519541 2832 if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2833 if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2834 } while (cl == pcl + 1);
Michael J. Spencer 1:f5ac63519541 2835 if (ulen <= tlen) { /* Store the length and top of the fragment */
Michael J. Spencer 1:f5ac63519541 2836 *tbl++ = ncl; *tbl++ = tcl;
Michael J. Spencer 1:f5ac63519541 2837 }
Michael J. Spencer 1:f5ac63519541 2838 } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
Michael J. Spencer 1:f5ac63519541 2839 }
Michael J. Spencer 1:f5ac63519541 2840 *fp->cltbl = ulen; /* Number of items used */
Michael J. Spencer 1:f5ac63519541 2841 if (ulen <= tlen)
Michael J. Spencer 1:f5ac63519541 2842 *tbl = 0; /* Terminate table */
Michael J. Spencer 1:f5ac63519541 2843 else
Michael J. Spencer 1:f5ac63519541 2844 res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
Michael J. Spencer 1:f5ac63519541 2845
Michael J. Spencer 1:f5ac63519541 2846 } else { /* Fast seek */
Michael J. Spencer 1:f5ac63519541 2847 if (ofs > fp->fsize) /* Clip offset at the file size */
Michael J. Spencer 1:f5ac63519541 2848 ofs = fp->fsize;
Michael J. Spencer 1:f5ac63519541 2849 fp->fptr = ofs; /* Set file pointer */
Michael J. Spencer 1:f5ac63519541 2850 if (ofs) {
Michael J. Spencer 1:f5ac63519541 2851 fp->clust = clmt_clust(fp, ofs - 1);
Michael J. Spencer 1:f5ac63519541 2852 dsc = clust2sect(fp->fs, fp->clust);
Michael J. Spencer 1:f5ac63519541 2853 if (!dsc) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2854 dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
Michael J. Spencer 1:f5ac63519541 2855 if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
Michael J. Spencer 1:f5ac63519541 2856 #if !_FS_TINY
Michael J. Spencer 1:f5ac63519541 2857 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2858 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
Michael J. Spencer 1:f5ac63519541 2859 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2860 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2861 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2862 }
Michael J. Spencer 1:f5ac63519541 2863 #endif
Michael J. Spencer 1:f5ac63519541 2864 if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
Michael J. Spencer 1:f5ac63519541 2865 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2866 #endif
Michael J. Spencer 1:f5ac63519541 2867 fp->dsect = dsc;
Michael J. Spencer 1:f5ac63519541 2868 }
Michael J. Spencer 1:f5ac63519541 2869 }
Michael J. Spencer 1:f5ac63519541 2870 }
Michael J. Spencer 1:f5ac63519541 2871 } else
Michael J. Spencer 1:f5ac63519541 2872 #endif
Michael J. Spencer 1:f5ac63519541 2873
Michael J. Spencer 1:f5ac63519541 2874 /* Normal Seek */
Michael J. Spencer 1:f5ac63519541 2875 {
Michael J. Spencer 1:f5ac63519541 2876 DWORD clst, bcs, nsect, ifptr;
Michael J. Spencer 1:f5ac63519541 2877
Michael J. Spencer 1:f5ac63519541 2878 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
Michael J. Spencer 1:f5ac63519541 2879 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2880 && !(fp->flag & FA_WRITE)
Michael J. Spencer 1:f5ac63519541 2881 #endif
Michael J. Spencer 1:f5ac63519541 2882 ) ofs = fp->fsize;
Michael J. Spencer 1:f5ac63519541 2883
Michael J. Spencer 1:f5ac63519541 2884 ifptr = fp->fptr;
Michael J. Spencer 1:f5ac63519541 2885 fp->fptr = nsect = 0;
Michael J. Spencer 1:f5ac63519541 2886 if (ofs) {
Michael J. Spencer 1:f5ac63519541 2887 bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
Michael J. Spencer 1:f5ac63519541 2888 if (ifptr > 0 &&
Michael J. Spencer 1:f5ac63519541 2889 (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
Michael J. Spencer 1:f5ac63519541 2890 fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
Michael J. Spencer 1:f5ac63519541 2891 ofs -= fp->fptr;
Michael J. Spencer 1:f5ac63519541 2892 clst = fp->clust;
Michael J. Spencer 1:f5ac63519541 2893 } else { /* When seek to back cluster, */
Michael J. Spencer 1:f5ac63519541 2894 clst = fp->sclust; /* start from the first cluster */
Michael J. Spencer 1:f5ac63519541 2895 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2896 if (clst == 0) { /* If no cluster chain, create a new chain */
Michael J. Spencer 1:f5ac63519541 2897 clst = create_chain(fp->fs, 0);
Michael J. Spencer 1:f5ac63519541 2898 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2899 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2900 fp->sclust = clst;
Michael J. Spencer 1:f5ac63519541 2901 }
Michael J. Spencer 1:f5ac63519541 2902 #endif
Michael J. Spencer 1:f5ac63519541 2903 fp->clust = clst;
Michael J. Spencer 1:f5ac63519541 2904 }
Michael J. Spencer 1:f5ac63519541 2905 if (clst != 0) {
Michael J. Spencer 1:f5ac63519541 2906 while (ofs > bcs) { /* Cluster following loop */
Michael J. Spencer 1:f5ac63519541 2907 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2908 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
Michael J. Spencer 1:f5ac63519541 2909 clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
Michael J. Spencer 1:f5ac63519541 2910 if (clst == 0) { /* When disk gets full, clip file size */
Michael J. Spencer 1:f5ac63519541 2911 ofs = bcs; break;
Michael J. Spencer 1:f5ac63519541 2912 }
Michael J. Spencer 1:f5ac63519541 2913 } else
Michael J. Spencer 1:f5ac63519541 2914 #endif
Michael J. Spencer 1:f5ac63519541 2915 clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
Michael J. Spencer 1:f5ac63519541 2916 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2917 if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2918 fp->clust = clst;
Michael J. Spencer 1:f5ac63519541 2919 fp->fptr += bcs;
Michael J. Spencer 1:f5ac63519541 2920 ofs -= bcs;
Michael J. Spencer 1:f5ac63519541 2921 }
Michael J. Spencer 1:f5ac63519541 2922 fp->fptr += ofs;
Michael J. Spencer 1:f5ac63519541 2923 if (ofs % SS(fp->fs)) {
Michael J. Spencer 1:f5ac63519541 2924 nsect = clust2sect(fp->fs, clst); /* Current sector */
Michael J. Spencer 1:f5ac63519541 2925 if (!nsect) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 2926 nsect += ofs / SS(fp->fs);
Michael J. Spencer 1:f5ac63519541 2927 }
Michael J. Spencer 1:f5ac63519541 2928 }
Michael J. Spencer 1:f5ac63519541 2929 }
Michael J. Spencer 1:f5ac63519541 2930 if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
Michael J. Spencer 1:f5ac63519541 2931 #if !_FS_TINY
Michael J. Spencer 1:f5ac63519541 2932 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2933 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
Michael J. Spencer 1:f5ac63519541 2934 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 2935 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2936 fp->flag &= ~FA__DIRTY;
Michael J. Spencer 1:f5ac63519541 2937 }
Michael J. Spencer 1:f5ac63519541 2938 #endif
Michael J. Spencer 1:f5ac63519541 2939 if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
Michael J. Spencer 1:f5ac63519541 2940 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 2941 #endif
Michael J. Spencer 1:f5ac63519541 2942 fp->dsect = nsect;
Michael J. Spencer 1:f5ac63519541 2943 }
Michael J. Spencer 1:f5ac63519541 2944 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 2945 if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
Michael J. Spencer 1:f5ac63519541 2946 fp->fsize = fp->fptr;
Michael J. Spencer 1:f5ac63519541 2947 fp->flag |= FA__WRITTEN;
Michael J. Spencer 1:f5ac63519541 2948 }
Michael J. Spencer 1:f5ac63519541 2949 #endif
Michael J. Spencer 1:f5ac63519541 2950 }
Michael J. Spencer 1:f5ac63519541 2951
Michael J. Spencer 1:f5ac63519541 2952 LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 2953 }
Michael J. Spencer 1:f5ac63519541 2954
Michael J. Spencer 1:f5ac63519541 2955
Michael J. Spencer 1:f5ac63519541 2956
Michael J. Spencer 1:f5ac63519541 2957 #if _FS_MINIMIZE <= 1
Michael J. Spencer 1:f5ac63519541 2958 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2959 /* Create a Directroy Object */
Michael J. Spencer 1:f5ac63519541 2960 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2961
Michael J. Spencer 1:f5ac63519541 2962 FRESULT f_opendir (
Michael J. Spencer 1:f5ac63519541 2963 FATFS_DIR *dj, /* Pointer to directory object to create */
Michael J. Spencer 1:f5ac63519541 2964 const TCHAR *path /* Pointer to the directory path */
Michael J. Spencer 1:f5ac63519541 2965 )
Michael J. Spencer 1:f5ac63519541 2966 {
Michael J. Spencer 1:f5ac63519541 2967 FRESULT res;
Michael J. Spencer 1:f5ac63519541 2968 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 2969
Michael J. Spencer 1:f5ac63519541 2970
Michael J. Spencer 1:f5ac63519541 2971 res = chk_mounted(&path, &dj->fs, 0);
Michael J. Spencer 1:f5ac63519541 2972 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2973 INIT_BUF(*dj);
Michael J. Spencer 1:f5ac63519541 2974 res = follow_path(dj, path); /* Follow the path to the directory */
Michael J. Spencer 1:f5ac63519541 2975 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 2976 if (res == FR_OK) { /* Follow completed */
Michael J. Spencer 1:f5ac63519541 2977 if (dj->dir) { /* It is not the root dir */
Michael J. Spencer 1:f5ac63519541 2978 if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
Michael J. Spencer 1:f5ac63519541 2979 dj->sclust = LD_CLUST(dj->dir);
Michael J. Spencer 1:f5ac63519541 2980 } else { /* The object is not a directory */
Michael J. Spencer 1:f5ac63519541 2981 res = FR_NO_PATH;
Michael J. Spencer 1:f5ac63519541 2982 }
Michael J. Spencer 1:f5ac63519541 2983 }
Michael J. Spencer 1:f5ac63519541 2984 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 2985 dj->id = dj->fs->id;
Michael J. Spencer 1:f5ac63519541 2986 res = dir_sdi(dj, 0); /* Rewind dir */
Michael J. Spencer 1:f5ac63519541 2987 }
Michael J. Spencer 1:f5ac63519541 2988 }
Michael J. Spencer 1:f5ac63519541 2989 if (res == FR_NO_FILE) res = FR_NO_PATH;
Michael J. Spencer 1:f5ac63519541 2990 }
Michael J. Spencer 1:f5ac63519541 2991
Michael J. Spencer 1:f5ac63519541 2992 LEAVE_FF(dj->fs, res);
Michael J. Spencer 1:f5ac63519541 2993 }
Michael J. Spencer 1:f5ac63519541 2994
Michael J. Spencer 1:f5ac63519541 2995
Michael J. Spencer 1:f5ac63519541 2996
Michael J. Spencer 1:f5ac63519541 2997
Michael J. Spencer 1:f5ac63519541 2998 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 2999 /* Read Directory Entry in Sequense */
Michael J. Spencer 1:f5ac63519541 3000 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3001
Michael J. Spencer 1:f5ac63519541 3002 FRESULT f_readdir (
Michael J. Spencer 1:f5ac63519541 3003 FATFS_DIR *dj, /* Pointer to the open directory object */
Michael J. Spencer 1:f5ac63519541 3004 FILINFO *fno /* Pointer to file information to return */
Michael J. Spencer 1:f5ac63519541 3005 )
Michael J. Spencer 1:f5ac63519541 3006 {
Michael J. Spencer 1:f5ac63519541 3007 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3008 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3009
Michael J. Spencer 1:f5ac63519541 3010
Michael J. Spencer 1:f5ac63519541 3011 res = validate(dj->fs, dj->id); /* Check validity of the object */
Michael J. Spencer 1:f5ac63519541 3012 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3013 if (!fno) {
Michael J. Spencer 1:f5ac63519541 3014 res = dir_sdi(dj, 0); /* Rewind the directory object */
Michael J. Spencer 1:f5ac63519541 3015 } else {
Michael J. Spencer 1:f5ac63519541 3016 INIT_BUF(*dj);
Michael J. Spencer 1:f5ac63519541 3017 res = dir_read(dj); /* Read an directory item */
Michael J. Spencer 1:f5ac63519541 3018 if (res == FR_NO_FILE) { /* Reached end of dir */
Michael J. Spencer 1:f5ac63519541 3019 dj->sect = 0;
Michael J. Spencer 1:f5ac63519541 3020 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 3021 }
Michael J. Spencer 1:f5ac63519541 3022 if (res == FR_OK) { /* A valid entry is found */
Michael J. Spencer 1:f5ac63519541 3023 get_fileinfo(dj, fno); /* Get the object information */
Michael J. Spencer 1:f5ac63519541 3024 res = dir_next(dj, 0); /* Increment index for next */
Michael J. Spencer 1:f5ac63519541 3025 if (res == FR_NO_FILE) {
Michael J. Spencer 1:f5ac63519541 3026 dj->sect = 0;
Michael J. Spencer 1:f5ac63519541 3027 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 3028 }
Michael J. Spencer 1:f5ac63519541 3029 }
Michael J. Spencer 1:f5ac63519541 3030 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3031 }
Michael J. Spencer 1:f5ac63519541 3032 }
Michael J. Spencer 1:f5ac63519541 3033
Michael J. Spencer 1:f5ac63519541 3034 LEAVE_FF(dj->fs, res);
Michael J. Spencer 1:f5ac63519541 3035 }
Michael J. Spencer 1:f5ac63519541 3036
Michael J. Spencer 1:f5ac63519541 3037
Michael J. Spencer 1:f5ac63519541 3038
Michael J. Spencer 1:f5ac63519541 3039 #if _FS_MINIMIZE == 0
Michael J. Spencer 1:f5ac63519541 3040 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3041 /* Get File Status */
Michael J. Spencer 1:f5ac63519541 3042 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3043
Michael J. Spencer 1:f5ac63519541 3044 FRESULT f_stat (
Michael J. Spencer 1:f5ac63519541 3045 const TCHAR *path, /* Pointer to the file path */
Michael J. Spencer 1:f5ac63519541 3046 FILINFO *fno /* Pointer to file information to return */
Michael J. Spencer 1:f5ac63519541 3047 )
Michael J. Spencer 1:f5ac63519541 3048 {
Michael J. Spencer 1:f5ac63519541 3049 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3050 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 3051 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3052
Michael J. Spencer 1:f5ac63519541 3053
Michael J. Spencer 1:f5ac63519541 3054 res = chk_mounted(&path, &dj.fs, 0);
Michael J. Spencer 1:f5ac63519541 3055 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3056 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 3057 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 3058 if (res == FR_OK) { /* Follow completed */
Michael J. Spencer 1:f5ac63519541 3059 if (dj.dir) /* Found an object */
Michael J. Spencer 1:f5ac63519541 3060 get_fileinfo(&dj, fno);
Michael J. Spencer 1:f5ac63519541 3061 else /* It is root dir */
Michael J. Spencer 1:f5ac63519541 3062 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3063 }
Michael J. Spencer 1:f5ac63519541 3064 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3065 }
Michael J. Spencer 1:f5ac63519541 3066
Michael J. Spencer 1:f5ac63519541 3067 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 3068 }
Michael J. Spencer 1:f5ac63519541 3069
Michael J. Spencer 1:f5ac63519541 3070
Michael J. Spencer 1:f5ac63519541 3071
Michael J. Spencer 1:f5ac63519541 3072 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 3073 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3074 /* Get Number of Free Clusters */
Michael J. Spencer 1:f5ac63519541 3075 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3076
Michael J. Spencer 1:f5ac63519541 3077 FRESULT f_getfree (
Michael J. Spencer 1:f5ac63519541 3078 const TCHAR *path, /* Pointer to the logical drive number (root dir) */
Michael J. Spencer 1:f5ac63519541 3079 DWORD *nclst, /* Pointer to the variable to return number of free clusters */
Michael J. Spencer 1:f5ac63519541 3080 FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
Michael J. Spencer 1:f5ac63519541 3081 )
Michael J. Spencer 1:f5ac63519541 3082 {
Michael J. Spencer 1:f5ac63519541 3083 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3084 DWORD n, clst, sect, stat;
Michael J. Spencer 1:f5ac63519541 3085 UINT i;
Michael J. Spencer 1:f5ac63519541 3086 BYTE fat, *p;
Michael J. Spencer 1:f5ac63519541 3087
Michael J. Spencer 1:f5ac63519541 3088
Michael J. Spencer 1:f5ac63519541 3089 /* Get drive number */
Michael J. Spencer 1:f5ac63519541 3090 res = chk_mounted(&path, fatfs, 0);
Michael J. Spencer 1:f5ac63519541 3091 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3092 /* If free_clust is valid, return it without full cluster scan */
Michael J. Spencer 1:f5ac63519541 3093 if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
Michael J. Spencer 1:f5ac63519541 3094 *nclst = (*fatfs)->free_clust;
Michael J. Spencer 1:f5ac63519541 3095 } else {
Michael J. Spencer 1:f5ac63519541 3096 /* Get number of free clusters */
Michael J. Spencer 1:f5ac63519541 3097 fat = (*fatfs)->fs_type;
Michael J. Spencer 1:f5ac63519541 3098 n = 0;
Michael J. Spencer 1:f5ac63519541 3099 if (fat == FS_FAT12) {
Michael J. Spencer 1:f5ac63519541 3100 clst = 2;
Michael J. Spencer 1:f5ac63519541 3101 do {
Michael J. Spencer 1:f5ac63519541 3102 stat = get_fat(*fatfs, clst);
Michael J. Spencer 1:f5ac63519541 3103 if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
Michael J. Spencer 1:f5ac63519541 3104 if (stat == 1) { res = FR_INT_ERR; break; }
Michael J. Spencer 1:f5ac63519541 3105 if (stat == 0) n++;
Michael J. Spencer 1:f5ac63519541 3106 } while (++clst < (*fatfs)->n_fatent);
Michael J. Spencer 1:f5ac63519541 3107 } else {
Michael J. Spencer 1:f5ac63519541 3108 clst = (*fatfs)->n_fatent;
Michael J. Spencer 1:f5ac63519541 3109 sect = (*fatfs)->fatbase;
Michael J. Spencer 1:f5ac63519541 3110 i = 0; p = 0;
Michael J. Spencer 1:f5ac63519541 3111 do {
Michael J. Spencer 1:f5ac63519541 3112 if (!i) {
Michael J. Spencer 1:f5ac63519541 3113 res = move_window(*fatfs, sect++);
Michael J. Spencer 1:f5ac63519541 3114 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 3115 p = (*fatfs)->win;
Michael J. Spencer 1:f5ac63519541 3116 i = SS(*fatfs);
Michael J. Spencer 1:f5ac63519541 3117 }
Michael J. Spencer 1:f5ac63519541 3118 if (fat == FS_FAT16) {
Michael J. Spencer 1:f5ac63519541 3119 if (LD_WORD(p) == 0) n++;
Michael J. Spencer 1:f5ac63519541 3120 p += 2; i -= 2;
Michael J. Spencer 1:f5ac63519541 3121 } else {
Michael J. Spencer 1:f5ac63519541 3122 if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
Michael J. Spencer 1:f5ac63519541 3123 p += 4; i -= 4;
Michael J. Spencer 1:f5ac63519541 3124 }
Michael J. Spencer 1:f5ac63519541 3125 } while (--clst);
Michael J. Spencer 1:f5ac63519541 3126 }
Michael J. Spencer 1:f5ac63519541 3127 (*fatfs)->free_clust = n;
Michael J. Spencer 1:f5ac63519541 3128 if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
Michael J. Spencer 1:f5ac63519541 3129 *nclst = n;
Michael J. Spencer 1:f5ac63519541 3130 }
Michael J. Spencer 1:f5ac63519541 3131 }
Michael J. Spencer 1:f5ac63519541 3132 LEAVE_FF(*fatfs, res);
Michael J. Spencer 1:f5ac63519541 3133 }
Michael J. Spencer 1:f5ac63519541 3134
Michael J. Spencer 1:f5ac63519541 3135
Michael J. Spencer 1:f5ac63519541 3136
Michael J. Spencer 1:f5ac63519541 3137
Michael J. Spencer 1:f5ac63519541 3138 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3139 /* Truncate File */
Michael J. Spencer 1:f5ac63519541 3140 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3141
Michael J. Spencer 1:f5ac63519541 3142 FRESULT f_truncate (
Michael J. Spencer 1:f5ac63519541 3143 FIL *fp /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3144 )
Michael J. Spencer 1:f5ac63519541 3145 {
Michael J. Spencer 1:f5ac63519541 3146 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3147 DWORD ncl;
Michael J. Spencer 1:f5ac63519541 3148
Michael J. Spencer 1:f5ac63519541 3149
Michael J. Spencer 1:f5ac63519541 3150 res = validate(fp->fs, fp->id); /* Check validity of the object */
Michael J. Spencer 1:f5ac63519541 3151 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3152 if (fp->flag & FA__ERROR) { /* Check abort flag */
Michael J. Spencer 1:f5ac63519541 3153 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 3154 } else {
Michael J. Spencer 1:f5ac63519541 3155 if (!(fp->flag & FA_WRITE)) /* Check access mode */
Michael J. Spencer 1:f5ac63519541 3156 res = FR_DENIED;
Michael J. Spencer 1:f5ac63519541 3157 }
Michael J. Spencer 1:f5ac63519541 3158 }
Michael J. Spencer 1:f5ac63519541 3159 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3160 if (fp->fsize > fp->fptr) {
Michael J. Spencer 1:f5ac63519541 3161 fp->fsize = fp->fptr; /* Set file size to current R/W point */
Michael J. Spencer 1:f5ac63519541 3162 fp->flag |= FA__WRITTEN;
Michael J. Spencer 1:f5ac63519541 3163 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
Michael J. Spencer 1:f5ac63519541 3164 res = remove_chain(fp->fs, fp->sclust);
Michael J. Spencer 1:f5ac63519541 3165 fp->sclust = 0;
Michael J. Spencer 1:f5ac63519541 3166 } else { /* When truncate a part of the file, remove remaining clusters */
Michael J. Spencer 1:f5ac63519541 3167 ncl = get_fat(fp->fs, fp->clust);
Michael J. Spencer 1:f5ac63519541 3168 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 3169 if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3170 if (ncl == 1) res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 3171 if (res == FR_OK && ncl < fp->fs->n_fatent) {
Michael J. Spencer 1:f5ac63519541 3172 res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
Michael J. Spencer 1:f5ac63519541 3173 if (res == FR_OK) res = remove_chain(fp->fs, ncl);
Michael J. Spencer 1:f5ac63519541 3174 }
Michael J. Spencer 1:f5ac63519541 3175 }
Michael J. Spencer 1:f5ac63519541 3176 }
Michael J. Spencer 1:f5ac63519541 3177 if (res != FR_OK) fp->flag |= FA__ERROR;
Michael J. Spencer 1:f5ac63519541 3178 }
Michael J. Spencer 1:f5ac63519541 3179
Michael J. Spencer 1:f5ac63519541 3180 LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 3181 }
Michael J. Spencer 1:f5ac63519541 3182
Michael J. Spencer 1:f5ac63519541 3183
Michael J. Spencer 1:f5ac63519541 3184
Michael J. Spencer 1:f5ac63519541 3185
Michael J. Spencer 1:f5ac63519541 3186 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3187 /* Delete a File or Directory */
Michael J. Spencer 1:f5ac63519541 3188 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3189
Michael J. Spencer 1:f5ac63519541 3190 FRESULT f_unlink (
Michael J. Spencer 1:f5ac63519541 3191 const TCHAR *path /* Pointer to the file or directory path */
Michael J. Spencer 1:f5ac63519541 3192 )
Michael J. Spencer 1:f5ac63519541 3193 {
Michael J. Spencer 1:f5ac63519541 3194 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3195 FATFS_DIR dj, sdj;
Michael J. Spencer 1:f5ac63519541 3196 BYTE *dir;
Michael J. Spencer 1:f5ac63519541 3197 DWORD dclst;
Michael J. Spencer 1:f5ac63519541 3198 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3199
Michael J. Spencer 1:f5ac63519541 3200
Michael J. Spencer 1:f5ac63519541 3201 res = chk_mounted(&path, &dj.fs, 1);
Michael J. Spencer 1:f5ac63519541 3202 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3203 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 3204 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 3205 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
Michael J. Spencer 1:f5ac63519541 3206 res = FR_INVALID_NAME; /* Cannot remove dot entry */
Michael J. Spencer 1:f5ac63519541 3207 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 3208 if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
Michael J. Spencer 1:f5ac63519541 3209 #endif
Michael J. Spencer 1:f5ac63519541 3210 if (res == FR_OK) { /* The object is accessible */
Michael J. Spencer 1:f5ac63519541 3211 dir = dj.dir;
Michael J. Spencer 1:f5ac63519541 3212 if (!dir) {
Michael J. Spencer 1:f5ac63519541 3213 res = FR_INVALID_NAME; /* Cannot remove the start directory */
Michael J. Spencer 1:f5ac63519541 3214 } else {
Michael J. Spencer 1:f5ac63519541 3215 if (dir[DIR_Attr] & AM_RDO)
Michael J. Spencer 1:f5ac63519541 3216 res = FR_DENIED; /* Cannot remove R/O object */
Michael J. Spencer 1:f5ac63519541 3217 }
Michael J. Spencer 1:f5ac63519541 3218 dclst = LD_CLUST(dir);
Michael J. Spencer 1:f5ac63519541 3219 if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
Michael J. Spencer 1:f5ac63519541 3220 if (dclst < 2) {
Michael J. Spencer 1:f5ac63519541 3221 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 3222 } else {
Michael J. Spencer 1:f5ac63519541 3223 mem_cpy(&sdj, &dj, sizeof(FATFS_DIR)); /* Check if the sub-dir is empty or not */
Michael J. Spencer 1:f5ac63519541 3224 sdj.sclust = dclst;
Michael J. Spencer 1:f5ac63519541 3225 res = dir_sdi(&sdj, 2); /* Exclude dot entries */
Michael J. Spencer 1:f5ac63519541 3226 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3227 res = dir_read(&sdj);
Michael J. Spencer 1:f5ac63519541 3228 if (res == FR_OK /* Not empty dir */
Michael J. Spencer 1:f5ac63519541 3229 #if _FS_RPATH
Michael J. Spencer 1:f5ac63519541 3230 || dclst == sdj.fs->cdir /* Current dir */
Michael J. Spencer 1:f5ac63519541 3231 #endif
Michael J. Spencer 1:f5ac63519541 3232 ) res = FR_DENIED;
Michael J. Spencer 1:f5ac63519541 3233 if (res == FR_NO_FILE) res = FR_OK; /* Empty */
Michael J. Spencer 1:f5ac63519541 3234 }
Michael J. Spencer 1:f5ac63519541 3235 }
Michael J. Spencer 1:f5ac63519541 3236 }
Michael J. Spencer 1:f5ac63519541 3237 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3238 res = dir_remove(&dj); /* Remove the directory entry */
Michael J. Spencer 1:f5ac63519541 3239 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3240 if (dclst) /* Remove the cluster chain if exist */
Michael J. Spencer 1:f5ac63519541 3241 res = remove_chain(dj.fs, dclst);
Michael J. Spencer 1:f5ac63519541 3242 if (res == FR_OK) res = sync(dj.fs);
Michael J. Spencer 1:f5ac63519541 3243 }
Michael J. Spencer 1:f5ac63519541 3244 }
Michael J. Spencer 1:f5ac63519541 3245 }
Michael J. Spencer 1:f5ac63519541 3246 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3247 }
Michael J. Spencer 1:f5ac63519541 3248 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 3249 }
Michael J. Spencer 1:f5ac63519541 3250
Michael J. Spencer 1:f5ac63519541 3251
Michael J. Spencer 1:f5ac63519541 3252
Michael J. Spencer 1:f5ac63519541 3253
Michael J. Spencer 1:f5ac63519541 3254 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3255 /* Create a Directory */
Michael J. Spencer 1:f5ac63519541 3256 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3257
Michael J. Spencer 1:f5ac63519541 3258 FRESULT f_mkdir (
Michael J. Spencer 1:f5ac63519541 3259 const TCHAR *path /* Pointer to the directory path */
Michael J. Spencer 1:f5ac63519541 3260 )
Michael J. Spencer 1:f5ac63519541 3261 {
Michael J. Spencer 1:f5ac63519541 3262 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3263 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 3264 BYTE *dir, n;
Michael J. Spencer 1:f5ac63519541 3265 DWORD dsc, dcl, pcl, tim = get_fattime();
Michael J. Spencer 1:f5ac63519541 3266 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3267
Michael J. Spencer 1:f5ac63519541 3268
Michael J. Spencer 1:f5ac63519541 3269 res = chk_mounted(&path, &dj.fs, 1);
Michael J. Spencer 1:f5ac63519541 3270 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3271 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 3272 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 3273 if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
Michael J. Spencer 1:f5ac63519541 3274 if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
Michael J. Spencer 1:f5ac63519541 3275 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3276 if (res == FR_NO_FILE) { /* Can create a new directory */
Michael J. Spencer 1:f5ac63519541 3277 dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
Michael J. Spencer 1:f5ac63519541 3278 res = FR_OK;
Michael J. Spencer 1:f5ac63519541 3279 if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
Michael J. Spencer 1:f5ac63519541 3280 if (dcl == 1) res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 3281 if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3282 if (res == FR_OK) /* Flush FAT */
Michael J. Spencer 1:f5ac63519541 3283 res = move_window(dj.fs, 0);
Michael J. Spencer 1:f5ac63519541 3284 if (res == FR_OK) { /* Initialize the new directory table */
Michael J. Spencer 1:f5ac63519541 3285 dsc = clust2sect(dj.fs, dcl);
Michael J. Spencer 1:f5ac63519541 3286 dir = dj.fs->win;
Michael J. Spencer 1:f5ac63519541 3287 mem_set(dir, 0, SS(dj.fs));
Michael J. Spencer 1:f5ac63519541 3288 mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
Michael J. Spencer 1:f5ac63519541 3289 dir[DIR_Name] = '.';
Michael J. Spencer 1:f5ac63519541 3290 dir[DIR_Attr] = AM_DIR;
Michael J. Spencer 1:f5ac63519541 3291 ST_DWORD(dir+DIR_WrtTime, tim);
Michael J. Spencer 1:f5ac63519541 3292 ST_CLUST(dir, dcl);
Michael J. Spencer 1:f5ac63519541 3293 mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
Michael J. Spencer 1:f5ac63519541 3294 dir[33] = '.'; pcl = dj.sclust;
Michael J. Spencer 1:f5ac63519541 3295 if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
Michael J. Spencer 1:f5ac63519541 3296 pcl = 0;
Michael J. Spencer 1:f5ac63519541 3297 ST_CLUST(dir+SZ_DIR, pcl);
Michael J. Spencer 1:f5ac63519541 3298 for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
Michael J. Spencer 1:f5ac63519541 3299 dj.fs->winsect = dsc++;
Michael J. Spencer 1:f5ac63519541 3300 dj.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3301 res = move_window(dj.fs, 0);
Michael J. Spencer 1:f5ac63519541 3302 if (res != FR_OK) break;
Michael J. Spencer 1:f5ac63519541 3303 mem_set(dir, 0, SS(dj.fs));
Michael J. Spencer 1:f5ac63519541 3304 }
Michael J. Spencer 1:f5ac63519541 3305 }
Michael J. Spencer 1:f5ac63519541 3306 if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
Michael J. Spencer 1:f5ac63519541 3307 if (res != FR_OK) {
Michael J. Spencer 1:f5ac63519541 3308 remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
Michael J. Spencer 1:f5ac63519541 3309 } else {
Michael J. Spencer 1:f5ac63519541 3310 dir = dj.dir;
Michael J. Spencer 1:f5ac63519541 3311 dir[DIR_Attr] = AM_DIR; /* Attribute */
Michael J. Spencer 1:f5ac63519541 3312 ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
Michael J. Spencer 1:f5ac63519541 3313 ST_CLUST(dir, dcl); /* Table start cluster */
Michael J. Spencer 1:f5ac63519541 3314 dj.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3315 res = sync(dj.fs);
Michael J. Spencer 1:f5ac63519541 3316 }
Michael J. Spencer 1:f5ac63519541 3317 }
Michael J. Spencer 1:f5ac63519541 3318 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3319 }
Michael J. Spencer 1:f5ac63519541 3320
Michael J. Spencer 1:f5ac63519541 3321 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 3322 }
Michael J. Spencer 1:f5ac63519541 3323
Michael J. Spencer 1:f5ac63519541 3324
Michael J. Spencer 1:f5ac63519541 3325
Michael J. Spencer 1:f5ac63519541 3326
Michael J. Spencer 1:f5ac63519541 3327 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3328 /* Change Attribute */
Michael J. Spencer 1:f5ac63519541 3329 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3330
Michael J. Spencer 1:f5ac63519541 3331 FRESULT f_chmod (
Michael J. Spencer 1:f5ac63519541 3332 const TCHAR *path, /* Pointer to the file path */
Michael J. Spencer 1:f5ac63519541 3333 BYTE value, /* Attribute bits */
Michael J. Spencer 1:f5ac63519541 3334 BYTE mask /* Attribute mask to change */
Michael J. Spencer 1:f5ac63519541 3335 )
Michael J. Spencer 1:f5ac63519541 3336 {
Michael J. Spencer 1:f5ac63519541 3337 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3338 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 3339 BYTE *dir;
Michael J. Spencer 1:f5ac63519541 3340 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3341
Michael J. Spencer 1:f5ac63519541 3342
Michael J. Spencer 1:f5ac63519541 3343 res = chk_mounted(&path, &dj.fs, 1);
Michael J. Spencer 1:f5ac63519541 3344 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3345 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 3346 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 3347 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3348 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
Michael J. Spencer 1:f5ac63519541 3349 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3350 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3351 dir = dj.dir;
Michael J. Spencer 1:f5ac63519541 3352 if (!dir) { /* Is it a root directory? */
Michael J. Spencer 1:f5ac63519541 3353 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3354 } else { /* File or sub directory */
Michael J. Spencer 1:f5ac63519541 3355 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
Michael J. Spencer 1:f5ac63519541 3356 dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
Michael J. Spencer 1:f5ac63519541 3357 dj.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3358 res = sync(dj.fs);
Michael J. Spencer 1:f5ac63519541 3359 }
Michael J. Spencer 1:f5ac63519541 3360 }
Michael J. Spencer 1:f5ac63519541 3361 }
Michael J. Spencer 1:f5ac63519541 3362
Michael J. Spencer 1:f5ac63519541 3363 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 3364 }
Michael J. Spencer 1:f5ac63519541 3365
Michael J. Spencer 1:f5ac63519541 3366
Michael J. Spencer 1:f5ac63519541 3367
Michael J. Spencer 1:f5ac63519541 3368
Michael J. Spencer 1:f5ac63519541 3369 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3370 /* Change Timestamp */
Michael J. Spencer 1:f5ac63519541 3371 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3372
Michael J. Spencer 1:f5ac63519541 3373 FRESULT f_utime (
Michael J. Spencer 1:f5ac63519541 3374 const TCHAR *path, /* Pointer to the file/directory name */
Michael J. Spencer 1:f5ac63519541 3375 const FILINFO *fno /* Pointer to the time stamp to be set */
Michael J. Spencer 1:f5ac63519541 3376 )
Michael J. Spencer 1:f5ac63519541 3377 {
Michael J. Spencer 1:f5ac63519541 3378 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3379 FATFS_DIR dj;
Michael J. Spencer 1:f5ac63519541 3380 BYTE *dir;
Michael J. Spencer 1:f5ac63519541 3381 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3382
Michael J. Spencer 1:f5ac63519541 3383
Michael J. Spencer 1:f5ac63519541 3384 res = chk_mounted(&path, &dj.fs, 1);
Michael J. Spencer 1:f5ac63519541 3385 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3386 INIT_BUF(dj);
Michael J. Spencer 1:f5ac63519541 3387 res = follow_path(&dj, path); /* Follow the file path */
Michael J. Spencer 1:f5ac63519541 3388 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3389 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
Michael J. Spencer 1:f5ac63519541 3390 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3391 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3392 dir = dj.dir;
Michael J. Spencer 1:f5ac63519541 3393 if (!dir) { /* Root directory */
Michael J. Spencer 1:f5ac63519541 3394 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3395 } else { /* File or sub-directory */
Michael J. Spencer 1:f5ac63519541 3396 ST_WORD(dir+DIR_WrtTime, fno->ftime);
Michael J. Spencer 1:f5ac63519541 3397 ST_WORD(dir+DIR_WrtDate, fno->fdate);
Michael J. Spencer 1:f5ac63519541 3398 dj.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3399 res = sync(dj.fs);
Michael J. Spencer 1:f5ac63519541 3400 }
Michael J. Spencer 1:f5ac63519541 3401 }
Michael J. Spencer 1:f5ac63519541 3402 }
Michael J. Spencer 1:f5ac63519541 3403
Michael J. Spencer 1:f5ac63519541 3404 LEAVE_FF(dj.fs, res);
Michael J. Spencer 1:f5ac63519541 3405 }
Michael J. Spencer 1:f5ac63519541 3406
Michael J. Spencer 1:f5ac63519541 3407
Michael J. Spencer 1:f5ac63519541 3408
Michael J. Spencer 1:f5ac63519541 3409
Michael J. Spencer 1:f5ac63519541 3410 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3411 /* Rename File/Directory */
Michael J. Spencer 1:f5ac63519541 3412 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3413
Michael J. Spencer 1:f5ac63519541 3414 FRESULT f_rename (
Michael J. Spencer 1:f5ac63519541 3415 const TCHAR *path_old, /* Pointer to the old name */
Michael J. Spencer 1:f5ac63519541 3416 const TCHAR *path_new /* Pointer to the new name */
Michael J. Spencer 1:f5ac63519541 3417 )
Michael J. Spencer 1:f5ac63519541 3418 {
Michael J. Spencer 1:f5ac63519541 3419 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3420 FATFS_DIR djo, djn;
Michael J. Spencer 1:f5ac63519541 3421 BYTE buf[21], *dir;
Michael J. Spencer 1:f5ac63519541 3422 DWORD dw;
Michael J. Spencer 1:f5ac63519541 3423 DEF_NAMEBUF;
Michael J. Spencer 1:f5ac63519541 3424
Michael J. Spencer 1:f5ac63519541 3425
Michael J. Spencer 1:f5ac63519541 3426 res = chk_mounted(&path_old, &djo.fs, 1);
Michael J. Spencer 1:f5ac63519541 3427 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3428 djn.fs = djo.fs;
Michael J. Spencer 1:f5ac63519541 3429 INIT_BUF(djo);
Michael J. Spencer 1:f5ac63519541 3430 res = follow_path(&djo, path_old); /* Check old object */
Michael J. Spencer 1:f5ac63519541 3431 if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
Michael J. Spencer 1:f5ac63519541 3432 res = FR_INVALID_NAME;
Michael J. Spencer 1:f5ac63519541 3433 #if _FS_SHARE
Michael J. Spencer 1:f5ac63519541 3434 if (res == FR_OK) res = chk_lock(&djo, 2);
Michael J. Spencer 1:f5ac63519541 3435 #endif
Michael J. Spencer 1:f5ac63519541 3436 if (res == FR_OK) { /* Old object is found */
Michael J. Spencer 1:f5ac63519541 3437 if (!djo.dir) { /* Is root dir? */
Michael J. Spencer 1:f5ac63519541 3438 res = FR_NO_FILE;
Michael J. Spencer 1:f5ac63519541 3439 } else {
Michael J. Spencer 1:f5ac63519541 3440 mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
Michael J. Spencer 1:f5ac63519541 3441 mem_cpy(&djn, &djo, sizeof(FATFS_DIR)); /* Check new object */
Michael J. Spencer 1:f5ac63519541 3442 res = follow_path(&djn, path_new);
Michael J. Spencer 1:f5ac63519541 3443 if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
Michael J. Spencer 1:f5ac63519541 3444 if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
Michael J. Spencer 1:f5ac63519541 3445 /* Start critical section that any interruption or error can cause cross-link */
Michael J. Spencer 1:f5ac63519541 3446 res = dir_register(&djn); /* Register the new entry */
Michael J. Spencer 1:f5ac63519541 3447 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3448 dir = djn.dir; /* Copy object information except for name */
Michael J. Spencer 1:f5ac63519541 3449 mem_cpy(dir+13, buf+2, 19);
Michael J. Spencer 1:f5ac63519541 3450 dir[DIR_Attr] = buf[0] | AM_ARC;
Michael J. Spencer 1:f5ac63519541 3451 djo.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3452 if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
Michael J. Spencer 1:f5ac63519541 3453 dw = clust2sect(djn.fs, LD_CLUST(dir));
Michael J. Spencer 1:f5ac63519541 3454 if (!dw) {
Michael J. Spencer 1:f5ac63519541 3455 res = FR_INT_ERR;
Michael J. Spencer 1:f5ac63519541 3456 } else {
Michael J. Spencer 1:f5ac63519541 3457 res = move_window(djn.fs, dw);
Michael J. Spencer 1:f5ac63519541 3458 dir = djn.fs->win+SZ_DIR; /* .. entry */
Michael J. Spencer 1:f5ac63519541 3459 if (res == FR_OK && dir[1] == '.') {
Michael J. Spencer 1:f5ac63519541 3460 dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
Michael J. Spencer 1:f5ac63519541 3461 ST_CLUST(dir, dw);
Michael J. Spencer 1:f5ac63519541 3462 djn.fs->wflag = 1;
Michael J. Spencer 1:f5ac63519541 3463 }
Michael J. Spencer 1:f5ac63519541 3464 }
Michael J. Spencer 1:f5ac63519541 3465 }
Michael J. Spencer 1:f5ac63519541 3466 if (res == FR_OK) {
Michael J. Spencer 1:f5ac63519541 3467 res = dir_remove(&djo); /* Remove old entry */
Michael J. Spencer 1:f5ac63519541 3468 if (res == FR_OK)
Michael J. Spencer 1:f5ac63519541 3469 res = sync(djo.fs);
Michael J. Spencer 1:f5ac63519541 3470 }
Michael J. Spencer 1:f5ac63519541 3471 }
Michael J. Spencer 1:f5ac63519541 3472 /* End critical section */
Michael J. Spencer 1:f5ac63519541 3473 }
Michael J. Spencer 1:f5ac63519541 3474 }
Michael J. Spencer 1:f5ac63519541 3475 }
Michael J. Spencer 1:f5ac63519541 3476 FREE_BUF();
Michael J. Spencer 1:f5ac63519541 3477 }
Michael J. Spencer 1:f5ac63519541 3478 LEAVE_FF(djo.fs, res);
Michael J. Spencer 1:f5ac63519541 3479 }
Michael J. Spencer 1:f5ac63519541 3480
Michael J. Spencer 1:f5ac63519541 3481 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 3482 #endif /* _FS_MINIMIZE == 0 */
Michael J. Spencer 1:f5ac63519541 3483 #endif /* _FS_MINIMIZE <= 1 */
Michael J. Spencer 1:f5ac63519541 3484 #endif /* _FS_MINIMIZE <= 2 */
Michael J. Spencer 1:f5ac63519541 3485
Michael J. Spencer 1:f5ac63519541 3486
Michael J. Spencer 1:f5ac63519541 3487
Michael J. Spencer 1:f5ac63519541 3488 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3489 /* Forward data to the stream directly (available on only tiny cfg) */
Michael J. Spencer 1:f5ac63519541 3490 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3491 #if _USE_FORWARD && _FS_TINY
Michael J. Spencer 1:f5ac63519541 3492
Michael J. Spencer 1:f5ac63519541 3493 FRESULT f_forward (
Michael J. Spencer 1:f5ac63519541 3494 FIL *fp, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3495 UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
Michael J. Spencer 1:f5ac63519541 3496 UINT btr, /* Number of bytes to forward */
Michael J. Spencer 1:f5ac63519541 3497 UINT *bf /* Pointer to number of bytes forwarded */
Michael J. Spencer 1:f5ac63519541 3498 )
Michael J. Spencer 1:f5ac63519541 3499 {
Michael J. Spencer 1:f5ac63519541 3500 FRESULT res;
Michael J. Spencer 1:f5ac63519541 3501 DWORD remain, clst, sect;
Michael J. Spencer 1:f5ac63519541 3502 UINT rcnt;
Michael J. Spencer 1:f5ac63519541 3503 BYTE csect;
Michael J. Spencer 1:f5ac63519541 3504
Michael J. Spencer 1:f5ac63519541 3505
Michael J. Spencer 1:f5ac63519541 3506 *bf = 0; /* Initialize byte counter */
Michael J. Spencer 1:f5ac63519541 3507
Michael J. Spencer 1:f5ac63519541 3508 res = validate(fp->fs, fp->id); /* Check validity of the object */
Michael J. Spencer 1:f5ac63519541 3509 if (res != FR_OK) LEAVE_FF(fp->fs, res);
Michael J. Spencer 1:f5ac63519541 3510 if (fp->flag & FA__ERROR) /* Check error flag */
Michael J. Spencer 1:f5ac63519541 3511 LEAVE_FF(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 3512 if (!(fp->flag & FA_READ)) /* Check access mode */
Michael J. Spencer 1:f5ac63519541 3513 LEAVE_FF(fp->fs, FR_DENIED);
Michael J. Spencer 1:f5ac63519541 3514
Michael J. Spencer 1:f5ac63519541 3515 remain = fp->fsize - fp->fptr;
Michael J. Spencer 1:f5ac63519541 3516 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
Michael J. Spencer 1:f5ac63519541 3517
Michael J. Spencer 1:f5ac63519541 3518 for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
Michael J. Spencer 1:f5ac63519541 3519 fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
Michael J. Spencer 1:f5ac63519541 3520 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
Michael J. Spencer 1:f5ac63519541 3521 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
Michael J. Spencer 1:f5ac63519541 3522 if (!csect) { /* On the cluster boundary? */
Michael J. Spencer 1:f5ac63519541 3523 clst = (fp->fptr == 0) ? /* On the top of the file? */
Michael J. Spencer 1:f5ac63519541 3524 fp->sclust : get_fat(fp->fs, fp->clust);
Michael J. Spencer 1:f5ac63519541 3525 if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 3526 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 3527 fp->clust = clst; /* Update current cluster */
Michael J. Spencer 1:f5ac63519541 3528 }
Michael J. Spencer 1:f5ac63519541 3529 }
Michael J. Spencer 1:f5ac63519541 3530 sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
Michael J. Spencer 1:f5ac63519541 3531 if (!sect) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 3532 sect += csect;
Michael J. Spencer 1:f5ac63519541 3533 if (move_window(fp->fs, sect)) /* Move sector window */
Michael J. Spencer 1:f5ac63519541 3534 ABORT(fp->fs, FR_DISK_ERR);
Michael J. Spencer 1:f5ac63519541 3535 fp->dsect = sect;
Michael J. Spencer 1:f5ac63519541 3536 rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
Michael J. Spencer 1:f5ac63519541 3537 if (rcnt > btr) rcnt = btr;
Michael J. Spencer 1:f5ac63519541 3538 rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
Michael J. Spencer 1:f5ac63519541 3539 if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
Michael J. Spencer 1:f5ac63519541 3540 }
Michael J. Spencer 1:f5ac63519541 3541
Michael J. Spencer 1:f5ac63519541 3542 LEAVE_FF(fp->fs, FR_OK);
Michael J. Spencer 1:f5ac63519541 3543 }
Michael J. Spencer 1:f5ac63519541 3544 #endif /* _USE_FORWARD */
Michael J. Spencer 1:f5ac63519541 3545
Michael J. Spencer 1:f5ac63519541 3546
Michael J. Spencer 1:f5ac63519541 3547
Michael J. Spencer 1:f5ac63519541 3548 #if _USE_MKFS && !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 3549 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3550 /* Create File System on the Drive */
Michael J. Spencer 1:f5ac63519541 3551 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3552 #define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
Michael J. Spencer 1:f5ac63519541 3553 #define N_FATS 1 /* Number of FAT copies (1 or 2) */
Michael J. Spencer 1:f5ac63519541 3554
Michael J. Spencer 1:f5ac63519541 3555
Michael J. Spencer 1:f5ac63519541 3556 FRESULT f_mkfs (
Michael J. Spencer 1:f5ac63519541 3557 BYTE drv, /* Logical drive number */
Michael J. Spencer 1:f5ac63519541 3558 BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
Michael J. Spencer 1:f5ac63519541 3559 UINT au /* Allocation unit size [bytes] */
Michael J. Spencer 1:f5ac63519541 3560 )
Michael J. Spencer 1:f5ac63519541 3561 {
Michael J. Spencer 1:f5ac63519541 3562 static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
Michael J. Spencer 1:f5ac63519541 3563 static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
Michael J. Spencer 1:f5ac63519541 3564 BYTE fmt, md, sys, *tbl, pdrv, part;
Michael J. Spencer 1:f5ac63519541 3565 DWORD n_clst, vs, n, wsect;
Michael J. Spencer 1:f5ac63519541 3566 UINT i;
Michael J. Spencer 1:f5ac63519541 3567 DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
Michael J. Spencer 1:f5ac63519541 3568 DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
Michael J. Spencer 1:f5ac63519541 3569 FATFS *fs;
Michael J. Spencer 1:f5ac63519541 3570 DSTATUS stat;
Michael J. Spencer 1:f5ac63519541 3571
Michael J. Spencer 1:f5ac63519541 3572
Michael J. Spencer 1:f5ac63519541 3573 /* Check mounted drive and clear work area */
Michael J. Spencer 1:f5ac63519541 3574 if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
Michael J. Spencer 1:f5ac63519541 3575 if (sfd > 1) return FR_INVALID_PARAMETER;
Michael J. Spencer 1:f5ac63519541 3576 if (au & (au - 1)) return FR_INVALID_PARAMETER;
Michael J. Spencer 1:f5ac63519541 3577 fs = FatFs[drv];
Michael J. Spencer 1:f5ac63519541 3578 if (!fs) return FR_NOT_ENABLED;
Michael J. Spencer 1:f5ac63519541 3579 fs->fs_type = 0;
Michael J. Spencer 1:f5ac63519541 3580 pdrv = LD2PD(drv); /* Physical drive */
Michael J. Spencer 1:f5ac63519541 3581 part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/
Michael J. Spencer 1:f5ac63519541 3582
Michael J. Spencer 1:f5ac63519541 3583 /* Get disk statics */
Michael J. Spencer 1:f5ac63519541 3584 stat = disk_initialize(pdrv);
Michael J. Spencer 1:f5ac63519541 3585 if (stat & STA_NOINIT) return FR_NOT_READY;
Michael J. Spencer 1:f5ac63519541 3586 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
Michael J. Spencer 1:f5ac63519541 3587 #if _MAX_SS != 512 /* Get disk sector size */
Michael J. Spencer 1:f5ac63519541 3588 if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
Michael J. Spencer 1:f5ac63519541 3589 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3590 #endif
Michael J. Spencer 1:f5ac63519541 3591 if (_MULTI_PARTITION && part) {
Michael J. Spencer 1:f5ac63519541 3592 /* Get partition information from partition table in the MBR */
Michael J. Spencer 1:f5ac63519541 3593 if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3594 if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
Michael J. Spencer 1:f5ac63519541 3595 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
Michael J. Spencer 1:f5ac63519541 3596 if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
Michael J. Spencer 1:f5ac63519541 3597 b_vol = LD_DWORD(tbl+8); /* Volume start sector */
Michael J. Spencer 1:f5ac63519541 3598 n_vol = LD_DWORD(tbl+12); /* Volume size */
Michael J. Spencer 1:f5ac63519541 3599 } else {
Michael J. Spencer 1:f5ac63519541 3600 /* Create a partition in this function */
Michael J. Spencer 1:f5ac63519541 3601 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
Michael J. Spencer 1:f5ac63519541 3602 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3603 b_vol = (sfd) ? 0 : 63; /* Volume start sector */
Michael J. Spencer 1:f5ac63519541 3604 n_vol -= b_vol; /* Volume size */
Michael J. Spencer 1:f5ac63519541 3605 }
Michael J. Spencer 1:f5ac63519541 3606
Michael J. Spencer 1:f5ac63519541 3607 if (!au) { /* AU auto selection */
Michael J. Spencer 1:f5ac63519541 3608 vs = n_vol / (2000 / (SS(fs) / 512));
Michael J. Spencer 1:f5ac63519541 3609 for (i = 0; vs < vst[i]; i++) ;
Michael J. Spencer 1:f5ac63519541 3610 au = cst[i];
Michael J. Spencer 1:f5ac63519541 3611 }
Michael J. Spencer 1:f5ac63519541 3612 au /= SS(fs); /* Number of sectors per cluster */
Michael J. Spencer 1:f5ac63519541 3613 if (au == 0) au = 1;
Michael J. Spencer 1:f5ac63519541 3614 if (au > 128) au = 128;
Michael J. Spencer 1:f5ac63519541 3615
Michael J. Spencer 1:f5ac63519541 3616 /* Pre-compute number of clusters and FAT syb-type */
Michael J. Spencer 1:f5ac63519541 3617 n_clst = n_vol / au;
Michael J. Spencer 1:f5ac63519541 3618 fmt = FS_FAT12;
Michael J. Spencer 1:f5ac63519541 3619 if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
Michael J. Spencer 1:f5ac63519541 3620 if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
Michael J. Spencer 1:f5ac63519541 3621
Michael J. Spencer 1:f5ac63519541 3622 /* Determine offset and size of FAT structure */
Michael J. Spencer 1:f5ac63519541 3623 if (fmt == FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 3624 n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
Michael J. Spencer 1:f5ac63519541 3625 n_rsv = 32;
Michael J. Spencer 1:f5ac63519541 3626 n_dir = 0;
Michael J. Spencer 1:f5ac63519541 3627 } else {
Michael J. Spencer 1:f5ac63519541 3628 n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
Michael J. Spencer 1:f5ac63519541 3629 n_fat = (n_fat + SS(fs) - 1) / SS(fs);
Michael J. Spencer 1:f5ac63519541 3630 n_rsv = 1;
Michael J. Spencer 1:f5ac63519541 3631 n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
Michael J. Spencer 1:f5ac63519541 3632 }
Michael J. Spencer 1:f5ac63519541 3633 b_fat = b_vol + n_rsv; /* FAT area start sector */
Michael J. Spencer 1:f5ac63519541 3634 b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
Michael J. Spencer 1:f5ac63519541 3635 b_data = b_dir + n_dir; /* Data area start sector */
Michael J. Spencer 1:f5ac63519541 3636 if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
Michael J. Spencer 1:f5ac63519541 3637
Michael J. Spencer 1:f5ac63519541 3638 /* Align data start sector to erase block boundary (for flash memory media) */
Michael J. Spencer 1:f5ac63519541 3639 if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
Michael J. Spencer 1:f5ac63519541 3640 n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
Michael J. Spencer 1:f5ac63519541 3641 n = (n - b_data) / N_FATS;
Michael J. Spencer 1:f5ac63519541 3642 if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
Michael J. Spencer 1:f5ac63519541 3643 n_rsv += n;
Michael J. Spencer 1:f5ac63519541 3644 b_fat += n;
Michael J. Spencer 1:f5ac63519541 3645 } else { /* FAT12/16: Expand FAT size */
Michael J. Spencer 1:f5ac63519541 3646 n_fat += n;
Michael J. Spencer 1:f5ac63519541 3647 }
Michael J. Spencer 1:f5ac63519541 3648
Michael J. Spencer 1:f5ac63519541 3649 /* Determine number of clusters and final check of validity of the FAT sub-type */
Michael J. Spencer 1:f5ac63519541 3650 n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
Michael J. Spencer 1:f5ac63519541 3651 if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
Michael J. Spencer 1:f5ac63519541 3652 || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
Michael J. Spencer 1:f5ac63519541 3653 return FR_MKFS_ABORTED;
Michael J. Spencer 1:f5ac63519541 3654
Michael J. Spencer 1:f5ac63519541 3655 switch (fmt) { /* Determine system ID for partition table */
Michael J. Spencer 1:f5ac63519541 3656 case FS_FAT12: sys = 0x01; break;
Michael J. Spencer 1:f5ac63519541 3657 case FS_FAT16: sys = (n_vol < 0x10000) ? 0x04 : 0x06; break;
Michael J. Spencer 1:f5ac63519541 3658 default: sys = 0x0C;
Michael J. Spencer 1:f5ac63519541 3659 }
Michael J. Spencer 1:f5ac63519541 3660
Michael J. Spencer 1:f5ac63519541 3661 if (_MULTI_PARTITION && part) {
Michael J. Spencer 1:f5ac63519541 3662 /* Update system ID in the partition table */
Michael J. Spencer 1:f5ac63519541 3663 tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
Michael J. Spencer 1:f5ac63519541 3664 tbl[4] = sys;
Michael J. Spencer 1:f5ac63519541 3665 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3666 md = 0xF8;
Michael J. Spencer 1:f5ac63519541 3667 } else {
Michael J. Spencer 1:f5ac63519541 3668 if (sfd) { /* No patition table (SFD) */
Michael J. Spencer 1:f5ac63519541 3669 md = 0xF0;
Michael J. Spencer 1:f5ac63519541 3670 } else { /* Create partition table (FDISK) */
Michael J. Spencer 1:f5ac63519541 3671 mem_set(fs->win, 0, SS(fs));
Michael J. Spencer 1:f5ac63519541 3672 tbl = fs->win+MBR_Table; /* Create partiton table for single partition in the drive */
Michael J. Spencer 1:f5ac63519541 3673 tbl[1] = 1; /* Partition start head */
Michael J. Spencer 1:f5ac63519541 3674 tbl[2] = 1; /* Partition start sector */
Michael J. Spencer 1:f5ac63519541 3675 tbl[3] = 0; /* Partition start cylinder */
Michael J. Spencer 1:f5ac63519541 3676 tbl[4] = sys; /* System type */
Michael J. Spencer 1:f5ac63519541 3677 tbl[5] = 254; /* Partition end head */
Michael J. Spencer 1:f5ac63519541 3678 n = (b_vol + n_vol) / 63 / 255;
Michael J. Spencer 1:f5ac63519541 3679 tbl[6] = (BYTE)((n >> 2) | 63); /* Partiiton end sector */
Michael J. Spencer 1:f5ac63519541 3680 tbl[7] = (BYTE)n; /* End cylinder */
Michael J. Spencer 1:f5ac63519541 3681 ST_DWORD(tbl+8, 63); /* Partition start in LBA */
Michael J. Spencer 1:f5ac63519541 3682 ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
Michael J. Spencer 1:f5ac63519541 3683 ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
Michael J. Spencer 1:f5ac63519541 3684 if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */
Michael J. Spencer 1:f5ac63519541 3685 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3686 md = 0xF8;
Michael J. Spencer 1:f5ac63519541 3687 }
Michael J. Spencer 1:f5ac63519541 3688 }
Michael J. Spencer 1:f5ac63519541 3689
Michael J. Spencer 1:f5ac63519541 3690 /* Create BPB in the VBR */
Michael J. Spencer 1:f5ac63519541 3691 tbl = fs->win; /* Clear sector */
Michael J. Spencer 1:f5ac63519541 3692 mem_set(tbl, 0, SS(fs));
Michael J. Spencer 1:f5ac63519541 3693 mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
Michael J. Spencer 1:f5ac63519541 3694 i = SS(fs); /* Sector size */
Michael J. Spencer 1:f5ac63519541 3695 ST_WORD(tbl+BPB_BytsPerSec, i);
Michael J. Spencer 1:f5ac63519541 3696 tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
Michael J. Spencer 1:f5ac63519541 3697 ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
Michael J. Spencer 1:f5ac63519541 3698 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
Michael J. Spencer 1:f5ac63519541 3699 i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
Michael J. Spencer 1:f5ac63519541 3700 ST_WORD(tbl+BPB_RootEntCnt, i);
Michael J. Spencer 1:f5ac63519541 3701 if (n_vol < 0x10000) { /* Number of total sectors */
Michael J. Spencer 1:f5ac63519541 3702 ST_WORD(tbl+BPB_TotSec16, n_vol);
Michael J. Spencer 1:f5ac63519541 3703 } else {
Michael J. Spencer 1:f5ac63519541 3704 ST_DWORD(tbl+BPB_TotSec32, n_vol);
Michael J. Spencer 1:f5ac63519541 3705 }
Michael J. Spencer 1:f5ac63519541 3706 tbl[BPB_Media] = md; /* Media descriptor */
Michael J. Spencer 1:f5ac63519541 3707 ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
Michael J. Spencer 1:f5ac63519541 3708 ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
Michael J. Spencer 1:f5ac63519541 3709 ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
Michael J. Spencer 1:f5ac63519541 3710 n = get_fattime(); /* Use current time as VSN */
Michael J. Spencer 1:f5ac63519541 3711 if (fmt == FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 3712 ST_DWORD(tbl+BS_VolID32, n); /* VSN */
Michael J. Spencer 1:f5ac63519541 3713 ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
Michael J. Spencer 1:f5ac63519541 3714 ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
Michael J. Spencer 1:f5ac63519541 3715 ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
Michael J. Spencer 1:f5ac63519541 3716 ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
Michael J. Spencer 1:f5ac63519541 3717 tbl[BS_DrvNum32] = 0x80; /* Drive number */
Michael J. Spencer 1:f5ac63519541 3718 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
Michael J. Spencer 1:f5ac63519541 3719 mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
Michael J. Spencer 1:f5ac63519541 3720 } else {
Michael J. Spencer 1:f5ac63519541 3721 ST_DWORD(tbl+BS_VolID, n); /* VSN */
Michael J. Spencer 1:f5ac63519541 3722 ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
Michael J. Spencer 1:f5ac63519541 3723 tbl[BS_DrvNum] = 0x80; /* Drive number */
Michael J. Spencer 1:f5ac63519541 3724 tbl[BS_BootSig] = 0x29; /* Extended boot signature */
Michael J. Spencer 1:f5ac63519541 3725 mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
Michael J. Spencer 1:f5ac63519541 3726 }
Michael J. Spencer 1:f5ac63519541 3727 ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
Michael J. Spencer 1:f5ac63519541 3728 if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
Michael J. Spencer 1:f5ac63519541 3729 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3730 if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
Michael J. Spencer 1:f5ac63519541 3731 disk_write(pdrv, tbl, b_vol + 6, 1);
Michael J. Spencer 1:f5ac63519541 3732
Michael J. Spencer 1:f5ac63519541 3733 /* Initialize FAT area */
Michael J. Spencer 1:f5ac63519541 3734 wsect = b_fat;
Michael J. Spencer 1:f5ac63519541 3735 for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
Michael J. Spencer 1:f5ac63519541 3736 mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
Michael J. Spencer 1:f5ac63519541 3737 n = md; /* Media descriptor byte */
Michael J. Spencer 1:f5ac63519541 3738 if (fmt != FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 3739 n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
Michael J. Spencer 1:f5ac63519541 3740 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
Michael J. Spencer 1:f5ac63519541 3741 } else {
Michael J. Spencer 1:f5ac63519541 3742 n |= 0xFFFFFF00;
Michael J. Spencer 1:f5ac63519541 3743 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
Michael J. Spencer 1:f5ac63519541 3744 ST_DWORD(tbl+4, 0xFFFFFFFF);
Michael J. Spencer 1:f5ac63519541 3745 ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
Michael J. Spencer 1:f5ac63519541 3746 }
Michael J. Spencer 1:f5ac63519541 3747 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 3748 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3749 mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
Michael J. Spencer 1:f5ac63519541 3750 for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
Michael J. Spencer 1:f5ac63519541 3751 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 3752 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3753 }
Michael J. Spencer 1:f5ac63519541 3754 }
Michael J. Spencer 1:f5ac63519541 3755
Michael J. Spencer 1:f5ac63519541 3756 /* Initialize root directory */
Michael J. Spencer 1:f5ac63519541 3757 i = (fmt == FS_FAT32) ? au : n_dir;
Michael J. Spencer 1:f5ac63519541 3758 do {
Michael J. Spencer 1:f5ac63519541 3759 if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
Michael J. Spencer 1:f5ac63519541 3760 return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3761 } while (--i);
Michael J. Spencer 1:f5ac63519541 3762
Michael J. Spencer 1:f5ac63519541 3763 #if _USE_ERASE /* Erase data area if needed */
Michael J. Spencer 1:f5ac63519541 3764 {
Michael J. Spencer 1:f5ac63519541 3765 DWORD eb[2];
Michael J. Spencer 1:f5ac63519541 3766
Michael J. Spencer 1:f5ac63519541 3767 eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
Michael J. Spencer 1:f5ac63519541 3768 disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb);
Michael J. Spencer 1:f5ac63519541 3769 }
Michael J. Spencer 1:f5ac63519541 3770 #endif
Michael J. Spencer 1:f5ac63519541 3771
Michael J. Spencer 1:f5ac63519541 3772 /* Create FSInfo if needed */
Michael J. Spencer 1:f5ac63519541 3773 if (fmt == FS_FAT32) {
Michael J. Spencer 1:f5ac63519541 3774 ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
Michael J. Spencer 1:f5ac63519541 3775 ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
Michael J. Spencer 1:f5ac63519541 3776 ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
Michael J. Spencer 1:f5ac63519541 3777 ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
Michael J. Spencer 1:f5ac63519541 3778 ST_WORD(tbl+BS_55AA, 0xAA55);
Michael J. Spencer 1:f5ac63519541 3779 disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
Michael J. Spencer 1:f5ac63519541 3780 disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
Michael J. Spencer 1:f5ac63519541 3781 }
Michael J. Spencer 1:f5ac63519541 3782
Michael J. Spencer 1:f5ac63519541 3783 return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3784 }
Michael J. Spencer 1:f5ac63519541 3785
Michael J. Spencer 1:f5ac63519541 3786
Michael J. Spencer 1:f5ac63519541 3787 #if _MULTI_PARTITION == 2
Michael J. Spencer 1:f5ac63519541 3788 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3789 /* Divide Physical Drive */
Michael J. Spencer 1:f5ac63519541 3790 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3791
Michael J. Spencer 1:f5ac63519541 3792 FRESULT f_fdisk (
Michael J. Spencer 1:f5ac63519541 3793 BYTE pdrv, /* Physical drive number */
Michael J. Spencer 1:f5ac63519541 3794 const DWORD szt[], /* Pointer to the size table for each partitions */
Michael J. Spencer 1:f5ac63519541 3795 void* work /* Pointer to the working buffer */
Michael J. Spencer 1:f5ac63519541 3796 )
Michael J. Spencer 1:f5ac63519541 3797 {
Michael J. Spencer 1:f5ac63519541 3798 UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
Michael J. Spencer 1:f5ac63519541 3799 BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
Michael J. Spencer 1:f5ac63519541 3800 DSTATUS stat;
Michael J. Spencer 1:f5ac63519541 3801 DWORD sz_disk, sz_part, s_part;
Michael J. Spencer 1:f5ac63519541 3802
Michael J. Spencer 1:f5ac63519541 3803
Michael J. Spencer 1:f5ac63519541 3804 stat = disk_initialize(pdrv);
Michael J. Spencer 1:f5ac63519541 3805 if (stat & STA_NOINIT) return FR_NOT_READY;
Michael J. Spencer 1:f5ac63519541 3806 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
Michael J. Spencer 1:f5ac63519541 3807 if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
Michael J. Spencer 1:f5ac63519541 3808
Michael J. Spencer 1:f5ac63519541 3809 /* Determine CHS in the table regardless of the drive geometry */
Michael J. Spencer 1:f5ac63519541 3810 for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
Michael J. Spencer 1:f5ac63519541 3811 if (n == 256) n--;
Michael J. Spencer 1:f5ac63519541 3812 e_hd = n - 1;
Michael J. Spencer 1:f5ac63519541 3813 sz_cyl = 63 * n;
Michael J. Spencer 1:f5ac63519541 3814 tot_cyl = sz_disk / sz_cyl;
Michael J. Spencer 1:f5ac63519541 3815
Michael J. Spencer 1:f5ac63519541 3816 /* Create partition table */
Michael J. Spencer 1:f5ac63519541 3817 mem_set(buf, 0, _MAX_SS);
Michael J. Spencer 1:f5ac63519541 3818 p = buf + MBR_Table; b_cyl = 0;
Michael J. Spencer 1:f5ac63519541 3819 for (i = 0; i < 4; i++, p += SZ_PTE) {
Michael J. Spencer 1:f5ac63519541 3820 p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
Michael J. Spencer 1:f5ac63519541 3821 if (!p_cyl) continue;
Michael J. Spencer 1:f5ac63519541 3822 s_part = (DWORD)sz_cyl * b_cyl;
Michael J. Spencer 1:f5ac63519541 3823 sz_part = (DWORD)sz_cyl * p_cyl;
Michael J. Spencer 1:f5ac63519541 3824 if (i == 0) { /* Exclude first track of cylinder 0 */
Michael J. Spencer 1:f5ac63519541 3825 s_hd = 1;
Michael J. Spencer 1:f5ac63519541 3826 s_part += 63; sz_part -= 63;
Michael J. Spencer 1:f5ac63519541 3827 } else {
Michael J. Spencer 1:f5ac63519541 3828 s_hd = 0;
Michael J. Spencer 1:f5ac63519541 3829 }
Michael J. Spencer 1:f5ac63519541 3830 e_cyl = b_cyl + p_cyl - 1;
Michael J. Spencer 1:f5ac63519541 3831 if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
Michael J. Spencer 1:f5ac63519541 3832
Michael J. Spencer 1:f5ac63519541 3833 /* Set partition table */
Michael J. Spencer 1:f5ac63519541 3834 p[1] = s_hd; /* Start head */
Michael J. Spencer 1:f5ac63519541 3835 p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
Michael J. Spencer 1:f5ac63519541 3836 p[3] = (BYTE)b_cyl; /* Start cylinder */
Michael J. Spencer 1:f5ac63519541 3837 p[4] = 0x06; /* System type (temporary setting) */
Michael J. Spencer 1:f5ac63519541 3838 p[5] = e_hd; /* End head */
Michael J. Spencer 1:f5ac63519541 3839 p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
Michael J. Spencer 1:f5ac63519541 3840 p[7] = (BYTE)e_cyl; /* End cylinder */
Michael J. Spencer 1:f5ac63519541 3841 ST_DWORD(p + 8, s_part); /* Start sector in LBA */
Michael J. Spencer 1:f5ac63519541 3842 ST_DWORD(p + 12, sz_part); /* Partition size */
Michael J. Spencer 1:f5ac63519541 3843
Michael J. Spencer 1:f5ac63519541 3844 /* Next partition */
Michael J. Spencer 1:f5ac63519541 3845 b_cyl += p_cyl;
Michael J. Spencer 1:f5ac63519541 3846 }
Michael J. Spencer 1:f5ac63519541 3847 ST_WORD(p, 0xAA55);
Michael J. Spencer 1:f5ac63519541 3848
Michael J. Spencer 1:f5ac63519541 3849 /* Write it to the MBR */
Michael J. Spencer 1:f5ac63519541 3850 return (disk_write(pdrv, buf, 0, 1) || disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK;
Michael J. Spencer 1:f5ac63519541 3851 }
Michael J. Spencer 1:f5ac63519541 3852
Michael J. Spencer 1:f5ac63519541 3853
Michael J. Spencer 1:f5ac63519541 3854 #endif /* _MULTI_PARTITION == 2 */
Michael J. Spencer 1:f5ac63519541 3855 #endif /* _USE_MKFS && !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 3856
Michael J. Spencer 1:f5ac63519541 3857
Michael J. Spencer 1:f5ac63519541 3858
Michael J. Spencer 1:f5ac63519541 3859
Michael J. Spencer 1:f5ac63519541 3860 #if _USE_STRFUNC
Michael J. Spencer 1:f5ac63519541 3861 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3862 /* Get a string from the file */
Michael J. Spencer 1:f5ac63519541 3863 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3864 TCHAR* f_gets (
Michael J. Spencer 1:f5ac63519541 3865 TCHAR* buff, /* Pointer to the string buffer to read */
Michael J. Spencer 1:f5ac63519541 3866 int len, /* Size of string buffer (characters) */
Michael J. Spencer 1:f5ac63519541 3867 FIL* fil /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3868 )
Michael J. Spencer 1:f5ac63519541 3869 {
Michael J. Spencer 1:f5ac63519541 3870 int n = 0;
Michael J. Spencer 1:f5ac63519541 3871 TCHAR c, *p = buff;
Michael J. Spencer 1:f5ac63519541 3872 BYTE s[2];
Michael J. Spencer 1:f5ac63519541 3873 UINT rc;
Michael J. Spencer 1:f5ac63519541 3874
Michael J. Spencer 1:f5ac63519541 3875
Michael J. Spencer 1:f5ac63519541 3876 while (n < len - 1) { /* Read bytes until buffer gets filled */
Michael J. Spencer 1:f5ac63519541 3877 f_read(fil, s, 1, &rc);
Michael J. Spencer 1:f5ac63519541 3878 if (rc != 1) break; /* Break on EOF or error */
Michael J. Spencer 1:f5ac63519541 3879 c = s[0];
Michael J. Spencer 1:f5ac63519541 3880 #if _LFN_UNICODE /* Read a character in UTF-8 encoding */
Michael J. Spencer 1:f5ac63519541 3881 if (c >= 0x80) {
Michael J. Spencer 1:f5ac63519541 3882 if (c < 0xC0) continue; /* Skip stray trailer */
Michael J. Spencer 1:f5ac63519541 3883 if (c < 0xE0) { /* Two-byte sequense */
Michael J. Spencer 1:f5ac63519541 3884 f_read(fil, s, 1, &rc);
Michael J. Spencer 1:f5ac63519541 3885 if (rc != 1) break;
Michael J. Spencer 1:f5ac63519541 3886 c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
Michael J. Spencer 1:f5ac63519541 3887 if (c < 0x80) c = '?';
Michael J. Spencer 1:f5ac63519541 3888 } else {
Michael J. Spencer 1:f5ac63519541 3889 if (c < 0xF0) { /* Three-byte sequense */
Michael J. Spencer 1:f5ac63519541 3890 f_read(fil, s, 2, &rc);
Michael J. Spencer 1:f5ac63519541 3891 if (rc != 2) break;
Michael J. Spencer 1:f5ac63519541 3892 c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
Michael J. Spencer 1:f5ac63519541 3893 if (c < 0x800) c = '?';
Michael J. Spencer 1:f5ac63519541 3894 } else { /* Reject four-byte sequense */
Michael J. Spencer 1:f5ac63519541 3895 c = '?';
Michael J. Spencer 1:f5ac63519541 3896 }
Michael J. Spencer 1:f5ac63519541 3897 }
Michael J. Spencer 1:f5ac63519541 3898 }
Michael J. Spencer 1:f5ac63519541 3899 #endif
Michael J. Spencer 1:f5ac63519541 3900 #if _USE_STRFUNC >= 2
Michael J. Spencer 1:f5ac63519541 3901 if (c == '\r') continue; /* Strip '\r' */
Michael J. Spencer 1:f5ac63519541 3902 #endif
Michael J. Spencer 1:f5ac63519541 3903 *p++ = c;
Michael J. Spencer 1:f5ac63519541 3904 n++;
Michael J. Spencer 1:f5ac63519541 3905 if (c == '\n') break; /* Break on EOL */
Michael J. Spencer 1:f5ac63519541 3906 }
Michael J. Spencer 1:f5ac63519541 3907 *p = 0;
Michael J. Spencer 1:f5ac63519541 3908 return n ? buff : 0; /* When no data read (eof or error), return with error. */
Michael J. Spencer 1:f5ac63519541 3909 }
Michael J. Spencer 1:f5ac63519541 3910
Michael J. Spencer 1:f5ac63519541 3911
Michael J. Spencer 1:f5ac63519541 3912
Michael J. Spencer 1:f5ac63519541 3913 #if !_FS_READONLY
Michael J. Spencer 1:f5ac63519541 3914 #include <stdarg.h>
Michael J. Spencer 1:f5ac63519541 3915 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3916 /* Put a character to the file */
Michael J. Spencer 1:f5ac63519541 3917 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3918 int f_putc (
Michael J. Spencer 1:f5ac63519541 3919 TCHAR c, /* A character to be output */
Michael J. Spencer 1:f5ac63519541 3920 FIL* fil /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3921 )
Michael J. Spencer 1:f5ac63519541 3922 {
Michael J. Spencer 1:f5ac63519541 3923 UINT bw, btw;
Michael J. Spencer 1:f5ac63519541 3924 BYTE s[3];
Michael J. Spencer 1:f5ac63519541 3925
Michael J. Spencer 1:f5ac63519541 3926
Michael J. Spencer 1:f5ac63519541 3927 #if _USE_STRFUNC >= 2
Michael J. Spencer 1:f5ac63519541 3928 if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
Michael J. Spencer 1:f5ac63519541 3929 #endif
Michael J. Spencer 1:f5ac63519541 3930
Michael J. Spencer 1:f5ac63519541 3931 #if _LFN_UNICODE /* Write the character in UTF-8 encoding */
Michael J. Spencer 1:f5ac63519541 3932 if (c < 0x80) { /* 7-bit */
Michael J. Spencer 1:f5ac63519541 3933 s[0] = (BYTE)c;
Michael J. Spencer 1:f5ac63519541 3934 btw = 1;
Michael J. Spencer 1:f5ac63519541 3935 } else {
Michael J. Spencer 1:f5ac63519541 3936 if (c < 0x800) { /* 11-bit */
Michael J. Spencer 1:f5ac63519541 3937 s[0] = (BYTE)(0xC0 | (c >> 6));
Michael J. Spencer 1:f5ac63519541 3938 s[1] = (BYTE)(0x80 | (c & 0x3F));
Michael J. Spencer 1:f5ac63519541 3939 btw = 2;
Michael J. Spencer 1:f5ac63519541 3940 } else { /* 16-bit */
Michael J. Spencer 1:f5ac63519541 3941 s[0] = (BYTE)(0xE0 | (c >> 12));
Michael J. Spencer 1:f5ac63519541 3942 s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
Michael J. Spencer 1:f5ac63519541 3943 s[2] = (BYTE)(0x80 | (c & 0x3F));
Michael J. Spencer 1:f5ac63519541 3944 btw = 3;
Michael J. Spencer 1:f5ac63519541 3945 }
Michael J. Spencer 1:f5ac63519541 3946 }
Michael J. Spencer 1:f5ac63519541 3947 #else /* Write the character without conversion */
Michael J. Spencer 1:f5ac63519541 3948 s[0] = (BYTE)c;
Michael J. Spencer 1:f5ac63519541 3949 btw = 1;
Michael J. Spencer 1:f5ac63519541 3950 #endif
Michael J. Spencer 1:f5ac63519541 3951 f_write(fil, s, btw, &bw); /* Write the char to the file */
Michael J. Spencer 1:f5ac63519541 3952 return (bw == btw) ? 1 : EOF; /* Return the result */
Michael J. Spencer 1:f5ac63519541 3953 }
Michael J. Spencer 1:f5ac63519541 3954
Michael J. Spencer 1:f5ac63519541 3955
Michael J. Spencer 1:f5ac63519541 3956
Michael J. Spencer 1:f5ac63519541 3957
Michael J. Spencer 1:f5ac63519541 3958 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3959 /* Put a string to the file */
Michael J. Spencer 1:f5ac63519541 3960 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3961 int f_puts (
Michael J. Spencer 1:f5ac63519541 3962 const TCHAR* str, /* Pointer to the string to be output */
Michael J. Spencer 1:f5ac63519541 3963 FIL* fil /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3964 )
Michael J. Spencer 1:f5ac63519541 3965 {
Michael J. Spencer 1:f5ac63519541 3966 int n;
Michael J. Spencer 1:f5ac63519541 3967
Michael J. Spencer 1:f5ac63519541 3968
Michael J. Spencer 1:f5ac63519541 3969 for (n = 0; *str; str++, n++) {
Michael J. Spencer 1:f5ac63519541 3970 if (f_putc(*str, fil) == EOF) return EOF;
Michael J. Spencer 1:f5ac63519541 3971 }
Michael J. Spencer 1:f5ac63519541 3972 return n;
Michael J. Spencer 1:f5ac63519541 3973 }
Michael J. Spencer 1:f5ac63519541 3974
Michael J. Spencer 1:f5ac63519541 3975
Michael J. Spencer 1:f5ac63519541 3976
Michael J. Spencer 1:f5ac63519541 3977
Michael J. Spencer 1:f5ac63519541 3978 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3979 /* Put a formatted string to the file */
Michael J. Spencer 1:f5ac63519541 3980 /*-----------------------------------------------------------------------*/
Michael J. Spencer 1:f5ac63519541 3981 int f_printf (
Michael J. Spencer 1:f5ac63519541 3982 FIL* fil, /* Pointer to the file object */
Michael J. Spencer 1:f5ac63519541 3983 const TCHAR* str, /* Pointer to the format string */
Michael J. Spencer 1:f5ac63519541 3984 ... /* Optional arguments... */
Michael J. Spencer 1:f5ac63519541 3985 )
Michael J. Spencer 1:f5ac63519541 3986 {
Michael J. Spencer 1:f5ac63519541 3987 va_list arp;
Michael J. Spencer 1:f5ac63519541 3988 BYTE f, r;
Michael J. Spencer 1:f5ac63519541 3989 UINT i, j, w;
Michael J. Spencer 1:f5ac63519541 3990 ULONG v;
Michael J. Spencer 1:f5ac63519541 3991 TCHAR c, d, s[16], *p;
Michael J. Spencer 1:f5ac63519541 3992 int res, chc, cc;
Michael J. Spencer 1:f5ac63519541 3993
Michael J. Spencer 1:f5ac63519541 3994
Michael J. Spencer 1:f5ac63519541 3995 va_start(arp, str);
Michael J. Spencer 1:f5ac63519541 3996
Michael J. Spencer 1:f5ac63519541 3997 for (cc = res = 0; cc != EOF; res += cc) {
Michael J. Spencer 1:f5ac63519541 3998 c = *str++;
Michael J. Spencer 1:f5ac63519541 3999 if (c == 0) break; /* End of string */
Michael J. Spencer 1:f5ac63519541 4000 if (c != '%') { /* Non escape character */
Michael J. Spencer 1:f5ac63519541 4001 cc = f_putc(c, fil);
Michael J. Spencer 1:f5ac63519541 4002 if (cc != EOF) cc = 1;
Michael J. Spencer 1:f5ac63519541 4003 continue;
Michael J. Spencer 1:f5ac63519541 4004 }
Michael J. Spencer 1:f5ac63519541 4005 w = f = 0;
Michael J. Spencer 1:f5ac63519541 4006 c = *str++;
Michael J. Spencer 1:f5ac63519541 4007 if (c == '0') { /* Flag: '0' padding */
Michael J. Spencer 1:f5ac63519541 4008 f = 1; c = *str++;
Michael J. Spencer 1:f5ac63519541 4009 } else {
Michael J. Spencer 1:f5ac63519541 4010 if (c == '-') { /* Flag: left justified */
Michael J. Spencer 1:f5ac63519541 4011 f = 2; c = *str++;
Michael J. Spencer 1:f5ac63519541 4012 }
Michael J. Spencer 1:f5ac63519541 4013 }
Michael J. Spencer 1:f5ac63519541 4014 while (IsDigit(c)) { /* Precision */
Michael J. Spencer 1:f5ac63519541 4015 w = w * 10 + c - '0';
Michael J. Spencer 1:f5ac63519541 4016 c = *str++;
Michael J. Spencer 1:f5ac63519541 4017 }
Michael J. Spencer 1:f5ac63519541 4018 if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
Michael J. Spencer 1:f5ac63519541 4019 f |= 4; c = *str++;
Michael J. Spencer 1:f5ac63519541 4020 }
Michael J. Spencer 1:f5ac63519541 4021 if (!c) break;
Michael J. Spencer 1:f5ac63519541 4022 d = c;
Michael J. Spencer 1:f5ac63519541 4023 if (IsLower(d)) d -= 0x20;
Michael J. Spencer 1:f5ac63519541 4024 switch (d) { /* Type is... */
Michael J. Spencer 1:f5ac63519541 4025 case 'S' : /* String */
Michael J. Spencer 1:f5ac63519541 4026 p = va_arg(arp, TCHAR*);
Michael J. Spencer 1:f5ac63519541 4027 for (j = 0; p[j]; j++) ;
Michael J. Spencer 1:f5ac63519541 4028 chc = 0;
Michael J. Spencer 1:f5ac63519541 4029 if (!(f & 2)) {
Michael J. Spencer 1:f5ac63519541 4030 while (j++ < w) chc += (cc = f_putc(' ', fil));
Michael J. Spencer 1:f5ac63519541 4031 }
Michael J. Spencer 1:f5ac63519541 4032 chc += (cc = f_puts(p, fil));
Michael J. Spencer 1:f5ac63519541 4033 while (j++ < w) chc += (cc = f_putc(' ', fil));
Michael J. Spencer 1:f5ac63519541 4034 if (cc != EOF) cc = chc;
Michael J. Spencer 1:f5ac63519541 4035 continue;
Michael J. Spencer 1:f5ac63519541 4036 case 'C' : /* Character */
Michael J. Spencer 1:f5ac63519541 4037 cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
Michael J. Spencer 1:f5ac63519541 4038 case 'B' : /* Binary */
Michael J. Spencer 1:f5ac63519541 4039 r = 2; break;
Michael J. Spencer 1:f5ac63519541 4040 case 'O' : /* Octal */
Michael J. Spencer 1:f5ac63519541 4041 r = 8; break;
Michael J. Spencer 1:f5ac63519541 4042 case 'D' : /* Signed decimal */
Michael J. Spencer 1:f5ac63519541 4043 case 'U' : /* Unsigned decimal */
Michael J. Spencer 1:f5ac63519541 4044 r = 10; break;
Michael J. Spencer 1:f5ac63519541 4045 case 'X' : /* Hexdecimal */
Michael J. Spencer 1:f5ac63519541 4046 r = 16; break;
Michael J. Spencer 1:f5ac63519541 4047 default: /* Unknown type (passthrough) */
Michael J. Spencer 1:f5ac63519541 4048 cc = f_putc(c, fil); continue;
Michael J. Spencer 1:f5ac63519541 4049 }
Michael J. Spencer 1:f5ac63519541 4050
Michael J. Spencer 1:f5ac63519541 4051 /* Get an argument and put it in numeral */
Michael J. Spencer 1:f5ac63519541 4052 v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int));
Michael J. Spencer 1:f5ac63519541 4053 if (d == 'D' && (v & 0x80000000)) {
Michael J. Spencer 1:f5ac63519541 4054 v = 0 - v;
Michael J. Spencer 1:f5ac63519541 4055 f |= 8;
Michael J. Spencer 1:f5ac63519541 4056 }
Michael J. Spencer 1:f5ac63519541 4057 i = 0;
Michael J. Spencer 1:f5ac63519541 4058 do {
Michael J. Spencer 1:f5ac63519541 4059 d = (TCHAR)(v % r); v /= r;
Michael J. Spencer 1:f5ac63519541 4060 if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
Michael J. Spencer 1:f5ac63519541 4061 s[i++] = d + '0';
Michael J. Spencer 1:f5ac63519541 4062 } while (v && i < sizeof(s) / sizeof(s[0]));
Michael J. Spencer 1:f5ac63519541 4063 if (f & 8) s[i++] = '-';
Michael J. Spencer 1:f5ac63519541 4064 j = i; d = (f & 1) ? '0' : ' ';
Michael J. Spencer 1:f5ac63519541 4065 res = 0;
Michael J. Spencer 1:f5ac63519541 4066 while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
Michael J. Spencer 1:f5ac63519541 4067 do res += (cc = f_putc(s[--i], fil)); while(i);
Michael J. Spencer 1:f5ac63519541 4068 while (j++ < w) res += (cc = f_putc(' ', fil));
Michael J. Spencer 1:f5ac63519541 4069 if (cc != EOF) cc = res;
Michael J. Spencer 1:f5ac63519541 4070 }
Michael J. Spencer 1:f5ac63519541 4071
Michael J. Spencer 1:f5ac63519541 4072 va_end(arp);
Michael J. Spencer 1:f5ac63519541 4073 return (cc == EOF) ? cc : res;
Michael J. Spencer 1:f5ac63519541 4074 }
Michael J. Spencer 1:f5ac63519541 4075
Michael J. Spencer 1:f5ac63519541 4076 #endif /* !_FS_READONLY */
Michael J. Spencer 1:f5ac63519541 4077 #endif /* _USE_STRFUNC */