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cloudbase.mooo.com Git - z180-stamp.git/blob - fatfs/src/ff.c
1 /*----------------------------------------------------------------------------/
2 / FatFs - FAT file system module R0.10c (C)ChaN, 2014
3 /-----------------------------------------------------------------------------/
4 / FatFs module is a generic FAT file system module for small embedded systems.
5 / This is a free software that opened for education, research and commercial
6 / developments under license policy of following terms.
8 / Copyright (C) 2014, ChaN, all right reserved.
10 / * The FatFs module is a free software and there is NO WARRANTY.
11 / * No restriction on use. You can use, modify and redistribute it for
12 / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
13 / * Redistributions of source code must retain the above copyright notice.
15 /-----------------------------------------------------------------------------/
16 / Feb 26,'06 R0.00 Prototype.
18 / Apr 29,'06 R0.01 First stable version.
20 / Jun 01,'06 R0.02 Added FAT12 support.
21 / Removed unbuffered mode.
22 / Fixed a problem on small (<32M) partition.
23 / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
25 / Sep 22,'06 R0.03 Added f_rename().
26 / Changed option _FS_MINIMUM to _FS_MINIMIZE.
27 / Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
28 / Fixed f_mkdir() creates incorrect directory on FAT32.
30 / Feb 04,'07 R0.04 Supported multiple drive system.
31 / Changed some interfaces for multiple drive system.
32 / Changed f_mountdrv() to f_mount().
34 / Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
35 / Added a capability of extending file size to f_lseek().
36 / Added minimization level 3.
37 / Fixed an endian sensitive code in f_mkfs().
38 / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
39 / Added FSINFO support.
40 / Fixed DBCS name can result FR_INVALID_NAME.
41 / Fixed short seek (<= csize) collapses the file object.
43 / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
44 / Fixed f_mkfs() on FAT32 creates incorrect FSINFO.
45 / Fixed f_mkdir() on FAT32 creates incorrect directory.
46 / Feb 03,'08 R0.05a Added f_truncate() and f_utime().
47 / Fixed off by one error at FAT sub-type determination.
48 / Fixed btr in f_read() can be mistruncated.
49 / Fixed cached sector is not flushed when create and close without write.
51 / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
52 / Improved performance of f_lseek() on moving to the same or following cluster.
54 / Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
55 / Added long file name feature.
56 / Added multiple code page feature.
57 / Added re-entrancy for multitask operation.
58 / Added auto cluster size selection to f_mkfs().
59 / Added rewind option to f_readdir().
60 / Changed result code of critical errors.
61 / Renamed string functions to avoid name collision.
62 / Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
63 / Added multiple sector size feature.
64 / Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
65 / Fixed wrong cache control in f_lseek().
66 / Added relative path feature.
67 / Added f_chdir() and f_chdrive().
68 / Added proper case conversion to extended character.
69 / Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
70 / Fixed f_unlink() fails to remove a sub-directory on _FS_RPATH.
71 / Fixed name matching error on the 13 character boundary.
72 / Added a configuration option, _LFN_UNICODE.
73 / Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
75 / May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
76 / Added file lock feature. (_FS_SHARE)
77 / Added fast seek feature. (_USE_FASTSEEK)
78 / Changed some types on the API, XCHAR->TCHAR.
79 / Changed .fname in the FILINFO structure on Unicode cfg.
80 / String functions support UTF-8 encoding files on Unicode cfg.
81 / Aug 16,'10 R0.08a Added f_getcwd().
82 / Added sector erase feature. (_USE_ERASE)
83 / Moved file lock semaphore table from fs object to the bss.
84 / Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
85 / Fixed f_mkfs() creates wrong FAT32 volume.
86 / Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
87 / f_lseek() reports required table size on creating CLMP.
88 / Extended format syntax of f_printf().
89 / Ignores duplicated directory separators in given path name.
91 / Sep 06,'11 R0.09 f_mkfs() supports multiple partition to complete the multiple partition feature.
93 / Aug 27,'12 R0.09a Changed f_open() and f_opendir() reject null object pointer to avoid crash.
94 / Changed option name _FS_SHARE to _FS_LOCK.
95 / Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
96 / Jan 24,'13 R0.09b Added f_setlabel() and f_getlabel().
98 / Oct 02,'13 R0.10 Added selection of character encoding on the file. (_STRF_ENCODE)
100 / Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)
101 / Added forced mount feature with changes of f_mount().
102 / Improved behavior of volume auto detection.
103 / Improved write throughput of f_puts() and f_printf().
104 / Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().
105 / Fixed f_write() can be truncated when the file size is close to 4GB.
106 / Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.
107 / Jan 15,'14 R0.10a Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)
108 / Added a configuration option of minimum sector size. (_MIN_SS)
109 / 2nd argument of f_rename() can have a drive number and it will be ignored.
110 / Fixed f_mount() with forced mount fails when drive number is >= 1.
111 / Fixed f_close() invalidates the file object without volume lock.
112 / Fixed f_closedir() returns but the volume lock is left acquired.
113 / Fixed creation of an entry with LFN fails on too many SFN collisions.
114 / May 19,'14 R0.10b Fixed a hard error in the disk I/O layer can collapse the directory entry.
115 / Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN.
116 / Nov 09,'14 R0.10c Added a configuration option for the platforms without RTC. (_FS_NORTC)
117 / Fixed volume label created by Mac OS X cannot be retrieved with f_getlabel().
118 / Fixed a potential problem of FAT access that can appear on disk error.
119 / Fixed null pointer dereference on attempting to delete the root direcotry.
120 /---------------------------------------------------------------------------*/
122 #include "ff.h" /* Declarations of FatFs API */
123 #include "diskio.h" /* Declarations of disk I/O functions */
128 /*--------------------------------------------------------------------------
130 Module Private Definitions
132 ---------------------------------------------------------------------------*/
134 #if _FATFS != 80376 /* Revision ID */
135 #error Wrong include file (ff.h).
139 /* Reentrancy related */
142 #error Static LFN work area cannot be used at thread-safe configuration
144 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
145 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
148 #define LEAVE_FF(fs, res) return res
151 #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
154 /* Definitions of sector size */
155 #if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)
156 #error Wrong sector size configuration
158 #if _MAX_SS == _MIN_SS
159 #define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
161 #define SS(fs) ((fs)->ssize) /* Variable sector size */
165 /* Timestamp feature */
167 #define GET_FATTIME() ((DWORD)_NORTC_YEAR << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
169 #define GET_FATTIME() get_fattime()
173 /* File access control feature */
176 #error _FS_LOCK must be 0 at read-only configuration
179 FATFS
*fs
; /* Object ID 1, volume (NULL:blank entry) */
180 DWORD clu
; /* Object ID 2, directory (0:root) */
181 WORD idx
; /* Object ID 3, directory index */
182 WORD ctr
; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
188 /* DBCS code ranges and SBCS extend character conversion table */
190 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
191 #define _DF1S 0x81 /* DBC 1st byte range 1 start */
192 #define _DF1E 0x9F /* DBC 1st byte range 1 end */
193 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
194 #define _DF2E 0xFC /* DBC 1st byte range 2 end */
195 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
196 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
197 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
198 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
200 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
208 #elif _CODE_PAGE == 949 /* Korean */
218 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
226 #elif _CODE_PAGE == 437 /* U.S. (OEM) */
228 #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, \
229 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, \
230 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, \
231 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}
233 #elif _CODE_PAGE == 720 /* Arabic (OEM) */
235 #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, \
236 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, \
237 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, \
238 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}
240 #elif _CODE_PAGE == 737 /* Greek (OEM) */
242 #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, \
243 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, \
244 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, \
245 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}
247 #elif _CODE_PAGE == 775 /* Baltic (OEM) */
249 #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, \
250 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, \
251 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, \
252 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}
254 #elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
256 #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, \
257 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, \
258 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, \
259 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}
261 #elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
263 #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, \
264 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, \
265 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, \
266 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}
268 #elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
270 #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, \
271 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, \
272 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, \
273 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}
275 #elif _CODE_PAGE == 857 /* Turkish (OEM) */
277 #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, \
278 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, \
279 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, \
280 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}
282 #elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
284 #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, \
285 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, \
286 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, \
287 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}
289 #elif _CODE_PAGE == 862 /* Hebrew (OEM) */
291 #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, \
292 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, \
293 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, \
294 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}
296 #elif _CODE_PAGE == 866 /* Russian (OEM) */
298 #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, \
299 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, \
300 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, \
301 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}
303 #elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
305 #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, \
306 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, \
307 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, \
308 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}
310 #elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
312 #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, \
313 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, \
314 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, \
315 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}
317 #elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
319 #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, \
320 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, \
321 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, \
322 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}
324 #elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
326 #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, \
327 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, \
328 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, \
329 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}
331 #elif _CODE_PAGE == 1253 /* Greek (Windows) */
333 #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, \
334 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, \
335 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, \
336 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}
338 #elif _CODE_PAGE == 1254 /* Turkish (Windows) */
340 #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, \
341 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, \
342 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, \
343 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}
345 #elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
347 #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, \
348 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, \
349 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, \
350 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}
352 #elif _CODE_PAGE == 1256 /* Arabic (Windows) */
354 #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, \
355 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, \
356 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, \
357 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}
359 #elif _CODE_PAGE == 1257 /* Baltic (Windows) */
361 #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, \
362 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, \
363 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, \
364 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}
366 #elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
368 #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, \
369 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, \
370 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, \
371 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}
373 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
375 #error Cannot use LFN feature without valid code page.
380 #error Unknown code page
385 /* Character code support macros */
386 #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
387 #define IsLower(c) (((c)>='a')&&((c)<='z'))
388 #define IsDigit(c) (((c)>='0')&&((c)<='9'))
390 #if _DF1S /* Code page is DBCS */
392 #ifdef _DF2S /* Two 1st byte areas */
393 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
394 #else /* One 1st byte area */
395 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
398 #ifdef _DS3S /* Three 2nd byte areas */
399 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
400 #else /* Two 2nd byte areas */
401 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
404 #else /* Code page is SBCS */
412 /* Name status flags */
413 #define NSFLAG 11 /* Index of name status byte in fn[] */
414 #define NS_LOSS 0x01 /* Out of 8.3 format */
415 #define NS_LFN 0x02 /* Force to create LFN entry */
416 #define NS_LAST 0x04 /* Last segment */
417 #define NS_BODY 0x08 /* Lower case flag (body) */
418 #define NS_EXT 0x10 /* Lower case flag (ext) */
419 #define NS_DOT 0x20 /* Dot entry */
422 /* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
423 #define MIN_FAT16 4086U /* Minimum number of clusters as FAT16 */
424 #define MIN_FAT32 65526U /* Minimum number of clusters as FAT32 */
427 /* FatFs refers the members in the FAT structures as byte array instead of
428 / structure member because the structure is not binary compatible between
429 / different platforms */
431 #define BS_jmpBoot 0 /* x86 jump instruction (3) */
432 #define BS_OEMName 3 /* OEM name (8) */
433 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
434 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
435 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
436 #define BPB_NumFATs 16 /* Number of FAT copies (1) */
437 #define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */
438 #define BPB_TotSec16 19 /* Volume size [sector] (2) */
439 #define BPB_Media 21 /* Media descriptor (1) */
440 #define BPB_FATSz16 22 /* FAT size [sector] (2) */
441 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */
442 #define BPB_NumHeads 26 /* Number of heads (2) */
443 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
444 #define BPB_TotSec32 32 /* Volume size [sector] (4) */
445 #define BS_DrvNum 36 /* Physical drive number (2) */
446 #define BS_BootSig 38 /* Extended boot signature (1) */
447 #define BS_VolID 39 /* Volume serial number (4) */
448 #define BS_VolLab 43 /* Volume label (8) */
449 #define BS_FilSysType 54 /* File system type (1) */
450 #define BPB_FATSz32 36 /* FAT size [sector] (4) */
451 #define BPB_ExtFlags 40 /* Extended flags (2) */
452 #define BPB_FSVer 42 /* File system version (2) */
453 #define BPB_RootClus 44 /* Root directory first cluster (4) */
454 #define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */
455 #define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
456 #define BS_DrvNum32 64 /* Physical drive number (2) */
457 #define BS_BootSig32 66 /* Extended boot signature (1) */
458 #define BS_VolID32 67 /* Volume serial number (4) */
459 #define BS_VolLab32 71 /* Volume label (8) */
460 #define BS_FilSysType32 82 /* File system type (1) */
461 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */
462 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */
463 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
464 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
465 #define MBR_Table 446 /* MBR: Partition table offset (2) */
466 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
467 #define BS_55AA 510 /* Signature word (2) */
469 #define DIR_Name 0 /* Short file name (11) */
470 #define DIR_Attr 11 /* Attribute (1) */
471 #define DIR_NTres 12 /* NT flag (1) */
472 #define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
473 #define DIR_CrtTime 14 /* Created time (2) */
474 #define DIR_CrtDate 16 /* Created date (2) */
475 #define DIR_LstAccDate 18 /* Last accessed date (2) */
476 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
477 #define DIR_WrtTime 22 /* Modified time (2) */
478 #define DIR_WrtDate 24 /* Modified date (2) */
479 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
480 #define DIR_FileSize 28 /* File size (4) */
481 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
482 #define LDIR_Attr 11 /* LFN attribute (1) */
483 #define LDIR_Type 12 /* LFN type (1) */
484 #define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
485 #define LDIR_FstClusLO 26 /* Filled by zero (0) */
486 #define SZ_DIR 32 /* Size of a directory entry */
487 #define LLE 0x40 /* Last long entry flag in LDIR_Ord */
488 #define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
489 #define NDDE 0x05 /* Replacement of the character collides with DDE */
494 /*------------------------------------------------------------*/
495 /* Module private work area */
496 /*------------------------------------------------------------*/
497 /* Remark: Uninitialized variables with static duration are
498 / guaranteed zero/null at start-up. If not, either the linker
499 / or start-up routine being used is out of ANSI-C standard.
502 #if _VOLUMES < 1 || _VOLUMES > 9
503 #error Wrong _VOLUMES setting
505 static FATFS
*FatFs
[_VOLUMES
]; /* Pointer to the file system objects (logical drives) */
506 static WORD Fsid
; /* File system mount ID */
508 #if _FS_RPATH && _VOLUMES >= 2
509 static BYTE CurrVol
; /* Current drive */
513 static FILESEM Files
[_FS_LOCK
]; /* Open object lock semaphores */
516 #if _USE_LFN == 0 /* Non LFN feature */
517 #define DEF_NAMEBUF BYTE sfn[12]
518 #define INIT_BUF(dobj) (dobj).fn = sfn
521 #if _MAX_LFN < 12 || _MAX_LFN > 255
522 #error Wrong _MAX_LFN setting
524 #if _USE_LFN == 1 /* LFN feature with static working buffer */
525 static WCHAR LfnBuf
[_MAX_LFN
+1];
526 #define DEF_NAMEBUF BYTE sfn[12]
527 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
529 #elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
530 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
531 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
533 #elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
534 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
535 #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); (dobj).lfn = lfn; (dobj).fn = sfn; }
536 #define FREE_BUF() ff_memfree(lfn)
538 #error Wrong _USE_LFN setting
543 static const BYTE ExCvt
[] = _EXCVT
; /* Upper conversion table for extended characters */
551 /*--------------------------------------------------------------------------
553 Module Private Functions
555 ---------------------------------------------------------------------------*/
558 /*-----------------------------------------------------------------------*/
559 /* String functions */
560 /*-----------------------------------------------------------------------*/
562 /* Copy memory to memory */
564 void mem_cpy (void* dst
, const void* src
, UINT cnt
) {
565 BYTE
*d
= (BYTE
*)dst
;
566 const BYTE
*s
= (const BYTE
*)src
;
568 #if _WORD_ACCESS == 1
569 while (cnt
>= sizeof (int)) {
571 d
+= sizeof (int); s
+= sizeof (int);
581 void mem_set (void* dst
, int val
, UINT cnt
) {
582 BYTE
*d
= (BYTE
*)dst
;
588 /* Compare memory to memory */
590 int mem_cmp (const void* dst
, const void* src
, UINT cnt
) {
591 const BYTE
*d
= (const BYTE
*)dst
, *s
= (const BYTE
*)src
;
594 while (cnt
-- && (r
= *d
++ - *s
++) == 0) ;
598 /* Check if chr is contained in the string */
600 int chk_chr (const char* str
, int chr
) {
601 while (*str
&& *str
!= chr
) str
++;
608 /*-----------------------------------------------------------------------*/
609 /* Request/Release grant to access the volume */
610 /*-----------------------------------------------------------------------*/
614 FATFS
* fs
/* File system object */
617 return ff_req_grant(fs
->sobj
);
623 FATFS
* fs
, /* File system object */
624 FRESULT res
/* Result code to be returned */
628 res
!= FR_NOT_ENABLED
&&
629 res
!= FR_INVALID_DRIVE
&&
630 res
!= FR_INVALID_OBJECT
&&
632 ff_rel_grant(fs
->sobj
);
640 /*-----------------------------------------------------------------------*/
641 /* File lock control functions */
642 /*-----------------------------------------------------------------------*/
646 FRESULT
chk_lock ( /* Check if the file can be accessed */
647 DIR* dp
, /* Directory object pointing the file to be checked */
648 int acc
/* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
653 /* Search file semaphore table */
654 for (i
= be
= 0; i
< _FS_LOCK
; i
++) {
655 if (Files
[i
].fs
) { /* Existing entry */
656 if (Files
[i
].fs
== dp
->fs
&& /* Check if the object matched with an open object */
657 Files
[i
].clu
== dp
->sclust
&&
658 Files
[i
].idx
== dp
->index
) break;
659 } else { /* Blank entry */
663 if (i
== _FS_LOCK
) /* The object is not opened */
664 return (be
|| acc
== 2) ? FR_OK
: FR_TOO_MANY_OPEN_FILES
; /* Is there a blank entry for new object? */
666 /* The object has been opened. Reject any open against writing file and all write mode open */
667 return (acc
|| Files
[i
].ctr
== 0x100) ? FR_LOCKED
: FR_OK
;
672 int enq_lock (void) /* Check if an entry is available for a new object */
676 for (i
= 0; i
< _FS_LOCK
&& Files
[i
].fs
; i
++) ;
677 return (i
== _FS_LOCK
) ? 0 : 1;
682 UINT
inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
683 DIR* dp
, /* Directory object pointing the file to register or increment */
684 int acc
/* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
690 for (i
= 0; i
< _FS_LOCK
; i
++) { /* Find the object */
691 if (Files
[i
].fs
== dp
->fs
&&
692 Files
[i
].clu
== dp
->sclust
&&
693 Files
[i
].idx
== dp
->index
) break;
696 if (i
== _FS_LOCK
) { /* Not opened. Register it as new. */
697 for (i
= 0; i
< _FS_LOCK
&& Files
[i
].fs
; i
++) ;
698 if (i
== _FS_LOCK
) return 0; /* No free entry to register (int err) */
699 Files
[i
].fs
= dp
->fs
;
700 Files
[i
].clu
= dp
->sclust
;
701 Files
[i
].idx
= dp
->index
;
705 if (acc
&& Files
[i
].ctr
) return 0; /* Access violation (int err) */
707 Files
[i
].ctr
= acc
? 0x100 : Files
[i
].ctr
+ 1; /* Set semaphore value */
714 FRESULT
dec_lock ( /* Decrement object open counter */
715 UINT i
/* Semaphore index (1..) */
722 if (--i
< _FS_LOCK
) { /* Shift index number origin from 0 */
724 if (n
== 0x100) n
= 0; /* If write mode open, delete the entry */
725 if (n
) n
--; /* Decrement read mode open count */
727 if (!n
) Files
[i
].fs
= 0; /* Delete the entry if open count gets zero */
730 res
= FR_INT_ERR
; /* Invalid index nunber */
737 void clear_lock ( /* Clear lock entries of the volume */
743 for (i
= 0; i
< _FS_LOCK
; i
++) {
744 if (Files
[i
].fs
== fs
) Files
[i
].fs
= 0;
752 /*-----------------------------------------------------------------------*/
753 /* Move/Flush disk access window in the file system object */
754 /*-----------------------------------------------------------------------*/
757 FRESULT
sync_window (
758 FATFS
* fs
/* File system object */
766 if (fs
->wflag
) { /* Write back the sector if it is dirty */
767 wsect
= fs
->winsect
; /* Current sector number */
768 if (disk_write(fs
->drv
, fs
->win
, wsect
, 1) != RES_OK
) {
772 if (wsect
- fs
->fatbase
< fs
->fsize
) { /* Is it in the FAT area? */
773 for (nf
= fs
->n_fats
; nf
>= 2; nf
--) { /* Reflect the change to all FAT copies */
775 disk_write(fs
->drv
, fs
->win
, wsect
, 1);
786 FRESULT
move_window (
787 FATFS
* fs
, /* File system object */
788 DWORD sector
/* Sector number to make appearance in the fs->win[] */
794 if (sector
!= fs
->winsect
) { /* Window offset changed? */
796 res
= sync_window(fs
); /* Write-back changes */
798 if (res
== FR_OK
) { /* Fill sector window with new data */
799 if (disk_read(fs
->drv
, fs
->win
, sector
, 1) != RES_OK
) {
800 sector
= 0xFFFFFFFF; /* Invalidate window if data is not reliable */
803 fs
->winsect
= sector
;
812 /*-----------------------------------------------------------------------*/
813 /* Synchronize file system and strage device */
814 /*-----------------------------------------------------------------------*/
817 FRESULT
sync_fs ( /* FR_OK: successful, FR_DISK_ERR: failed */
818 FATFS
* fs
/* File system object */
824 res
= sync_window(fs
);
826 /* Update FSINFO sector if needed */
827 if (fs
->fs_type
== FS_FAT32
&& fs
->fsi_flag
== 1) {
828 /* Create FSINFO structure */
829 mem_set(fs
->win
, 0, SS(fs
));
830 ST_WORD(fs
->win
+BS_55AA
, 0xAA55);
831 ST_DWORD(fs
->win
+FSI_LeadSig
, 0x41615252);
832 ST_DWORD(fs
->win
+FSI_StrucSig
, 0x61417272);
833 ST_DWORD(fs
->win
+FSI_Free_Count
, fs
->free_clust
);
834 ST_DWORD(fs
->win
+FSI_Nxt_Free
, fs
->last_clust
);
835 /* Write it into the FSINFO sector */
836 fs
->winsect
= fs
->volbase
+ 1;
837 disk_write(fs
->drv
, fs
->win
, fs
->winsect
, 1);
840 /* Make sure that no pending write process in the physical drive */
841 if (disk_ioctl(fs
->drv
, CTRL_SYNC
, 0) != RES_OK
)
852 /*-----------------------------------------------------------------------*/
853 /* Get sector# from cluster# */
854 /*-----------------------------------------------------------------------*/
855 /* Hidden API for hacks and disk tools */
857 DWORD
clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
858 FATFS
* fs
, /* File system object */
859 DWORD clst
/* Cluster# to be converted */
863 if (clst
>= fs
->n_fatent
- 2) return 0; /* Invalid cluster# */
864 return clst
* fs
->csize
+ fs
->database
;
870 /*-----------------------------------------------------------------------*/
871 /* FAT access - Read value of a FAT entry */
872 /*-----------------------------------------------------------------------*/
873 /* Hidden API for hacks and disk tools */
875 DWORD
get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
876 FATFS
* fs
, /* File system object */
877 DWORD clst
/* FAT item index (cluster#) to get the value */
885 if (clst
< 2 || clst
>= fs
->n_fatent
) { /* Check range */
886 val
= 1; /* Internal error */
889 val
= 0xFFFFFFFF; /* Default value falls on disk error */
891 switch (fs
->fs_type
) {
893 bc
= (UINT
)clst
; bc
+= bc
/ 2;
894 if (move_window(fs
, fs
->fatbase
+ (bc
/ SS(fs
))) != FR_OK
) break;
895 wc
= fs
->win
[bc
++ % SS(fs
)];
896 if (move_window(fs
, fs
->fatbase
+ (bc
/ SS(fs
))) != FR_OK
) break;
897 wc
|= fs
->win
[bc
% SS(fs
)] << 8;
898 val
= clst
& 1 ? wc
>> 4 : (wc
& 0xFFF);
902 if (move_window(fs
, fs
->fatbase
+ (clst
/ (SS(fs
) / 2))) != FR_OK
) break;
903 p
= &fs
->win
[clst
* 2 % SS(fs
)];
908 if (move_window(fs
, fs
->fatbase
+ (clst
/ (SS(fs
) / 4))) != FR_OK
) break;
909 p
= &fs
->win
[clst
* 4 % SS(fs
)];
910 val
= LD_DWORD(p
) & 0x0FFFFFFF;
914 val
= 1; /* Internal error */
924 /*-----------------------------------------------------------------------*/
925 /* FAT access - Change value of a FAT entry */
926 /*-----------------------------------------------------------------------*/
927 /* Hidden API for hacks and disk tools */
931 FATFS
* fs
, /* File system object */
932 DWORD clst
, /* FAT item index (cluster#) to be set */
933 DWORD val
/* New value to mark the cluster */
941 if (clst
< 2 || clst
>= fs
->n_fatent
) { /* Check range */
945 switch (fs
->fs_type
) {
947 bc
= (UINT
)clst
; bc
+= bc
/ 2;
948 res
= move_window(fs
, fs
->fatbase
+ (bc
/ SS(fs
)));
949 if (res
!= FR_OK
) break;
950 p
= &fs
->win
[bc
++ % SS(fs
)];
951 *p
= (clst
& 1) ? ((*p
& 0x0F) | ((BYTE
)val
<< 4)) : (BYTE
)val
;
953 res
= move_window(fs
, fs
->fatbase
+ (bc
/ SS(fs
)));
954 if (res
!= FR_OK
) break;
955 p
= &fs
->win
[bc
% SS(fs
)];
956 *p
= (clst
& 1) ? (BYTE
)(val
>> 4) : ((*p
& 0xF0) | ((BYTE
)(val
>> 8) & 0x0F));
961 res
= move_window(fs
, fs
->fatbase
+ (clst
/ (SS(fs
) / 2)));
962 if (res
!= FR_OK
) break;
963 p
= &fs
->win
[clst
* 2 % SS(fs
)];
964 ST_WORD(p
, (WORD
)val
);
969 res
= move_window(fs
, fs
->fatbase
+ (clst
/ (SS(fs
) / 4)));
970 if (res
!= FR_OK
) break;
971 p
= &fs
->win
[clst
* 4 % SS(fs
)];
972 val
|= LD_DWORD(p
) & 0xF0000000;
984 #endif /* !_FS_READONLY */
989 /*-----------------------------------------------------------------------*/
990 /* FAT handling - Remove a cluster chain */
991 /*-----------------------------------------------------------------------*/
994 FRESULT
remove_chain (
995 FATFS
* fs
, /* File system object */
996 DWORD clst
/* Cluster# to remove a chain from */
1002 DWORD scl
= clst
, ecl
= clst
, rt
[2];
1005 if (clst
< 2 || clst
>= fs
->n_fatent
) { /* Check range */
1010 while (clst
< fs
->n_fatent
) { /* Not a last link? */
1011 nxt
= get_fat(fs
, clst
); /* Get cluster status */
1012 if (nxt
== 0) break; /* Empty cluster? */
1013 if (nxt
== 1) { res
= FR_INT_ERR
; break; } /* Internal error? */
1014 if (nxt
== 0xFFFFFFFF) { res
= FR_DISK_ERR
; break; } /* Disk error? */
1015 res
= put_fat(fs
, clst
, 0); /* Mark the cluster "empty" */
1016 if (res
!= FR_OK
) break;
1017 if (fs
->free_clust
!= 0xFFFFFFFF) { /* Update FSINFO */
1022 if (ecl
+ 1 == nxt
) { /* Is next cluster contiguous? */
1024 } else { /* End of contiguous clusters */
1025 rt
[0] = clust2sect(fs
, scl
); /* Start sector */
1026 rt
[1] = clust2sect(fs
, ecl
) + fs
->csize
- 1; /* End sector */
1027 disk_ioctl(fs
->drv
, CTRL_TRIM
, rt
); /* Erase the block */
1031 clst
= nxt
; /* Next cluster */
1042 /*-----------------------------------------------------------------------*/
1043 /* FAT handling - Stretch or Create a cluster chain */
1044 /*-----------------------------------------------------------------------*/
1047 DWORD
create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
1048 FATFS
* fs
, /* File system object */
1049 DWORD clst
/* Cluster# to stretch. 0 means create a new chain. */
1056 if (clst
== 0) { /* Create a new chain */
1057 scl
= fs
->last_clust
; /* Get suggested start point */
1058 if (!scl
|| scl
>= fs
->n_fatent
) scl
= 1;
1060 else { /* Stretch the current chain */
1061 cs
= get_fat(fs
, clst
); /* Check the cluster status */
1062 if (cs
< 2) return 1; /* Invalid value */
1063 if (cs
== 0xFFFFFFFF) return cs
; /* A disk error occurred */
1064 if (cs
< fs
->n_fatent
) return cs
; /* It is already followed by next cluster */
1068 ncl
= scl
; /* Start cluster */
1070 ncl
++; /* Next cluster */
1071 if (ncl
>= fs
->n_fatent
) { /* Check wrap around */
1073 if (ncl
> scl
) return 0; /* No free cluster */
1075 cs
= get_fat(fs
, ncl
); /* Get the cluster status */
1076 if (cs
== 0) break; /* Found a free cluster */
1077 if (cs
== 0xFFFFFFFF || cs
== 1)/* An error occurred */
1079 if (ncl
== scl
) return 0; /* No free cluster */
1082 res
= put_fat(fs
, ncl
, 0x0FFFFFFF); /* Mark the new cluster "last link" */
1083 if (res
== FR_OK
&& clst
!= 0) {
1084 res
= put_fat(fs
, clst
, ncl
); /* Link it to the previous one if needed */
1087 fs
->last_clust
= ncl
; /* Update FSINFO */
1088 if (fs
->free_clust
!= 0xFFFFFFFF) {
1093 ncl
= (res
== FR_DISK_ERR
) ? 0xFFFFFFFF : 1;
1096 return ncl
; /* Return new cluster number or error code */
1098 #endif /* !_FS_READONLY */
1103 /*-----------------------------------------------------------------------*/
1104 /* FAT handling - Convert offset into cluster with link map table */
1105 /*-----------------------------------------------------------------------*/
1109 DWORD
clmt_clust ( /* <2:Error, >=2:Cluster number */
1110 FIL
* fp
, /* Pointer to the file object */
1111 DWORD ofs
/* File offset to be converted to cluster# */
1114 DWORD cl
, ncl
, *tbl
;
1117 tbl
= fp
->cltbl
+ 1; /* Top of CLMT */
1118 cl
= ofs
/ SS(fp
->fs
) / fp
->fs
->csize
; /* Cluster order from top of the file */
1120 ncl
= *tbl
++; /* Number of cluters in the fragment */
1121 if (!ncl
) return 0; /* End of table? (error) */
1122 if (cl
< ncl
) break; /* In this fragment? */
1123 cl
-= ncl
; tbl
++; /* Next fragment */
1125 return cl
+ *tbl
; /* Return the cluster number */
1127 #endif /* _USE_FASTSEEK */
1132 /*-----------------------------------------------------------------------*/
1133 /* Directory handling - Set directory index */
1134 /*-----------------------------------------------------------------------*/
1138 DIR* dp
, /* Pointer to directory object */
1139 UINT idx
/* Index of directory table */
1146 dp
->index
= (WORD
)idx
; /* Current index */
1147 clst
= dp
->sclust
; /* Table start cluster (0:root) */
1148 if (clst
== 1 || clst
>= dp
->fs
->n_fatent
) /* Check start cluster range */
1150 if (!clst
&& dp
->fs
->fs_type
== FS_FAT32
) /* Replace cluster# 0 with root cluster# if in FAT32 */
1151 clst
= dp
->fs
->dirbase
;
1153 if (clst
== 0) { /* Static table (root-directory in FAT12/16) */
1154 if (idx
>= dp
->fs
->n_rootdir
) /* Is index out of range? */
1156 sect
= dp
->fs
->dirbase
;
1158 else { /* Dynamic table (root-directory in FAT32 or sub-directory) */
1159 ic
= SS(dp
->fs
) / SZ_DIR
* dp
->fs
->csize
; /* Entries per cluster */
1160 while (idx
>= ic
) { /* Follow cluster chain */
1161 clst
= get_fat(dp
->fs
, clst
); /* Get next cluster */
1162 if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
; /* Disk error */
1163 if (clst
< 2 || clst
>= dp
->fs
->n_fatent
) /* Reached to end of table or internal error */
1167 sect
= clust2sect(dp
->fs
, clst
);
1169 dp
->clust
= clst
; /* Current cluster# */
1170 if (!sect
) return FR_INT_ERR
;
1171 dp
->sect
= sect
+ idx
/ (SS(dp
->fs
) / SZ_DIR
); /* Sector# of the directory entry */
1172 dp
->dir
= dp
->fs
->win
+ (idx
% (SS(dp
->fs
) / SZ_DIR
)) * SZ_DIR
; /* Ptr to the entry in the sector */
1180 /*-----------------------------------------------------------------------*/
1181 /* Directory handling - Move directory table index next */
1182 /*-----------------------------------------------------------------------*/
1185 FRESULT
dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
1186 DIR* dp
, /* Pointer to the directory object */
1187 int stretch
/* 0: Do not stretch table, 1: Stretch table if needed */
1195 if (!(i
& 0xFFFF) || !dp
->sect
) /* Report EOT when index has reached 65535 */
1198 if (!(i
% (SS(dp
->fs
) / SZ_DIR
))) { /* Sector changed? */
1199 dp
->sect
++; /* Next sector */
1201 if (!dp
->clust
) { /* Static table */
1202 if (i
>= dp
->fs
->n_rootdir
) /* Report EOT if it reached end of static table */
1205 else { /* Dynamic table */
1206 if (((i
/ (SS(dp
->fs
) / SZ_DIR
)) & (dp
->fs
->csize
- 1)) == 0) { /* Cluster changed? */
1207 clst
= get_fat(dp
->fs
, dp
->clust
); /* Get next cluster */
1208 if (clst
<= 1) return FR_INT_ERR
;
1209 if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
;
1210 if (clst
>= dp
->fs
->n_fatent
) { /* If it reached end of dynamic table, */
1213 if (!stretch
) return FR_NO_FILE
; /* If do not stretch, report EOT */
1214 clst
= create_chain(dp
->fs
, dp
->clust
); /* Stretch cluster chain */
1215 if (clst
== 0) return FR_DENIED
; /* No free cluster */
1216 if (clst
== 1) return FR_INT_ERR
;
1217 if (clst
== 0xFFFFFFFF) return FR_DISK_ERR
;
1218 /* Clean-up stretched table */
1219 if (sync_window(dp
->fs
)) return FR_DISK_ERR
;/* Flush disk access window */
1220 mem_set(dp
->fs
->win
, 0, SS(dp
->fs
)); /* Clear window buffer */
1221 dp
->fs
->winsect
= clust2sect(dp
->fs
, clst
); /* Cluster start sector */
1222 for (c
= 0; c
< dp
->fs
->csize
; c
++) { /* Fill the new cluster with 0 */
1224 if (sync_window(dp
->fs
)) return FR_DISK_ERR
;
1227 dp
->fs
->winsect
-= c
; /* Rewind window offset */
1229 if (!stretch
) return FR_NO_FILE
; /* If do not stretch, report EOT (this is to suppress warning) */
1230 return FR_NO_FILE
; /* Report EOT */
1233 dp
->clust
= clst
; /* Initialize data for new cluster */
1234 dp
->sect
= clust2sect(dp
->fs
, clst
);
1239 dp
->index
= (WORD
)i
; /* Current index */
1240 dp
->dir
= dp
->fs
->win
+ (i
% (SS(dp
->fs
) / SZ_DIR
)) * SZ_DIR
; /* Current entry in the window */
1248 /*-----------------------------------------------------------------------*/
1249 /* Directory handling - Reserve directory entry */
1250 /*-----------------------------------------------------------------------*/
1255 DIR* dp
, /* Pointer to the directory object */
1256 UINT nent
/* Number of contiguous entries to allocate (1-21) */
1263 res
= dir_sdi(dp
, 0);
1267 res
= move_window(dp
->fs
, dp
->sect
);
1268 if (res
!= FR_OK
) break;
1269 if (dp
->dir
[0] == DDE
|| dp
->dir
[0] == 0) { /* Is it a free entry? */
1270 if (++n
== nent
) break; /* A block of contiguous free entries is found */
1272 n
= 0; /* Not a blank entry. Restart to search */
1274 res
= dir_next(dp
, 1); /* Next entry with table stretch enabled */
1275 } while (res
== FR_OK
);
1277 if (res
== FR_NO_FILE
) res
= FR_DENIED
; /* No directory entry to allocate */
1285 /*-----------------------------------------------------------------------*/
1286 /* Directory handling - Load/Store start cluster number */
1287 /*-----------------------------------------------------------------------*/
1291 FATFS
* fs
, /* Pointer to the fs object */
1292 BYTE
* dir
/* Pointer to the directory entry */
1297 cl
= LD_WORD(dir
+DIR_FstClusLO
);
1298 if (fs
->fs_type
== FS_FAT32
)
1299 cl
|= (DWORD
)LD_WORD(dir
+DIR_FstClusHI
) << 16;
1308 BYTE
* dir
, /* Pointer to the directory entry */
1309 DWORD cl
/* Value to be set */
1312 ST_WORD(dir
+DIR_FstClusLO
, cl
);
1313 ST_WORD(dir
+DIR_FstClusHI
, cl
>> 16);
1320 /*-----------------------------------------------------------------------*/
1321 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
1322 /*-----------------------------------------------------------------------*/
1325 const BYTE LfnOfs
[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
1329 int cmp_lfn ( /* 1:Matched, 0:Not matched */
1330 WCHAR
* lfnbuf
, /* Pointer to the LFN to be compared */
1331 BYTE
* dir
/* Pointer to the directory entry containing a part of LFN */
1338 i
= ((dir
[LDIR_Ord
] & ~LLE
) - 1) * 13; /* Get offset in the LFN buffer */
1341 uc
= LD_WORD(dir
+LfnOfs
[s
]); /* Pick an LFN character from the entry */
1342 if (wc
) { /* Last character has not been processed */
1343 wc
= ff_wtoupper(uc
); /* Convert it to upper case */
1344 if (i
>= _MAX_LFN
|| wc
!= ff_wtoupper(lfnbuf
[i
++])) /* Compare it */
1345 return 0; /* Not matched */
1347 if (uc
!= 0xFFFF) return 0; /* Check filler */
1349 } while (++s
< 13); /* Repeat until all characters in the entry are checked */
1351 if ((dir
[LDIR_Ord
] & LLE
) && wc
&& lfnbuf
[i
]) /* Last segment matched but different length */
1354 return 1; /* The part of LFN matched */
1360 int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
1361 WCHAR
* lfnbuf
, /* Pointer to the Unicode-LFN buffer */
1362 BYTE
* dir
/* Pointer to the directory entry */
1369 i
= ((dir
[LDIR_Ord
] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
1373 uc
= LD_WORD(dir
+LfnOfs
[s
]); /* Pick an LFN character from the entry */
1374 if (wc
) { /* Last character has not been processed */
1375 if (i
>= _MAX_LFN
) return 0; /* Buffer overflow? */
1376 lfnbuf
[i
++] = wc
= uc
; /* Store it */
1378 if (uc
!= 0xFFFF) return 0; /* Check filler */
1380 } while (++s
< 13); /* Read all character in the entry */
1382 if (dir
[LDIR_Ord
] & LLE
) { /* Put terminator if it is the last LFN part */
1383 if (i
>= _MAX_LFN
) return 0; /* Buffer overflow? */
1394 const WCHAR
* lfnbuf
, /* Pointer to the LFN buffer */
1395 BYTE
* dir
, /* Pointer to the directory entry */
1396 BYTE ord
, /* LFN order (1-20) */
1397 BYTE sum
/* SFN sum */
1404 dir
[LDIR_Chksum
] = sum
; /* Set check sum */
1405 dir
[LDIR_Attr
] = AM_LFN
; /* Set attribute. LFN entry */
1407 ST_WORD(dir
+LDIR_FstClusLO
, 0);
1409 i
= (ord
- 1) * 13; /* Get offset in the LFN buffer */
1412 if (wc
!= 0xFFFF) wc
= lfnbuf
[i
++]; /* Get an effective character */
1413 ST_WORD(dir
+LfnOfs
[s
], wc
); /* Put it */
1414 if (!wc
) wc
= 0xFFFF; /* Padding characters following last character */
1416 if (wc
== 0xFFFF || !lfnbuf
[i
]) ord
|= LLE
; /* Bottom LFN part is the start of LFN sequence */
1417 dir
[LDIR_Ord
] = ord
; /* Set the LFN order */
1426 /*-----------------------------------------------------------------------*/
1427 /* Create numbered name */
1428 /*-----------------------------------------------------------------------*/
1432 BYTE
* dst
, /* Pointer to the buffer to store numbered SFN */
1433 const BYTE
* src
, /* Pointer to SFN */
1434 const WCHAR
* lfn
, /* Pointer to LFN */
1435 UINT seq
/* Sequence number */
1442 mem_cpy(dst
, src
, 11);
1444 if (seq
> 5) { /* On many collisions, generate a hash number instead of sequential number */
1448 while (*lfn
) { /* Create a CRC */
1450 for (i
= 0; i
< 16; i
++) {
1451 sr
= (sr
<< 1) + (wc
& 1);
1453 if (sr
& 0x10000) sr
^= 0x11021;
1459 /* itoa (hexdecimal) */
1462 c
= (seq
% 16) + '0';
1463 if (c
> '9') c
+= 7;
1469 /* Append the number */
1470 for (j
= 0; j
< i
&& dst
[j
] != ' '; j
++) {
1471 if (IsDBCS1(dst
[j
])) {
1472 if (j
== i
- 1) break;
1477 dst
[j
++] = (i
< 8) ? ns
[i
++] : ' ';
1485 /*-----------------------------------------------------------------------*/
1486 /* Calculate sum of an SFN */
1487 /*-----------------------------------------------------------------------*/
1491 const BYTE
* dir
/* Pointer to the SFN entry */
1497 do sum
= (sum
>> 1) + (sum
<< 7) + *dir
++; while (--n
);
1505 /*-----------------------------------------------------------------------*/
1506 /* Directory handling - Find an object in the directory */
1507 /*-----------------------------------------------------------------------*/
1511 DIR* dp
/* Pointer to the directory object linked to the file name */
1520 res
= dir_sdi(dp
, 0); /* Rewind directory object */
1521 if (res
!= FR_OK
) return res
;
1524 ord
= sum
= 0xFF; dp
->lfn_idx
= 0xFFFF; /* Reset LFN sequence */
1527 res
= move_window(dp
->fs
, dp
->sect
);
1528 if (res
!= FR_OK
) break;
1529 dir
= dp
->dir
; /* Ptr to the directory entry of current index */
1531 if (c
== 0) { res
= FR_NO_FILE
; break; } /* Reached to end of table */
1532 #if _USE_LFN /* LFN configuration */
1533 a
= dir
[DIR_Attr
] & AM_MASK
;
1534 if (c
== DDE
|| ((a
& AM_VOL
) && a
!= AM_LFN
)) { /* An entry without valid data */
1535 ord
= 0xFF; dp
->lfn_idx
= 0xFFFF; /* Reset LFN sequence */
1537 if (a
== AM_LFN
) { /* An LFN entry is found */
1539 if (c
& LLE
) { /* Is it start of LFN sequence? */
1540 sum
= dir
[LDIR_Chksum
];
1541 c
&= ~LLE
; ord
= c
; /* LFN start order */
1542 dp
->lfn_idx
= dp
->index
; /* Start index of LFN */
1544 /* Check validity of the LFN entry and compare it with given name */
1545 ord
= (c
== ord
&& sum
== dir
[LDIR_Chksum
] && cmp_lfn(dp
->lfn
, dir
)) ? ord
- 1 : 0xFF;
1547 } else { /* An SFN entry is found */
1548 if (!ord
&& sum
== sum_sfn(dir
)) break; /* LFN matched? */
1549 if (!(dp
->fn
[NSFLAG
] & NS_LOSS
) && !mem_cmp(dir
, dp
->fn
, 11)) break; /* SFN matched? */
1550 ord
= 0xFF; dp
->lfn_idx
= 0xFFFF; /* Reset LFN sequence */
1553 #else /* Non LFN configuration */
1554 if (!(dir
[DIR_Attr
] & AM_VOL
) && !mem_cmp(dir
, dp
->fn
, 11)) /* Is it a valid entry? */
1557 res
= dir_next(dp
, 0); /* Next entry */
1558 } while (res
== FR_OK
);
1566 /*-----------------------------------------------------------------------*/
1567 /* Read an object from the directory */
1568 /*-----------------------------------------------------------------------*/
1569 #if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2
1572 DIR* dp
, /* Pointer to the directory object */
1573 int vol
/* Filtered by 0:file/directory or 1:volume label */
1579 BYTE ord
= 0xFF, sum
= 0xFF;
1584 res
= move_window(dp
->fs
, dp
->sect
);
1585 if (res
!= FR_OK
) break;
1586 dir
= dp
->dir
; /* Ptr to the directory entry of current index */
1588 if (c
== 0) { res
= FR_NO_FILE
; break; } /* Reached to end of table */
1589 a
= dir
[DIR_Attr
] & AM_MASK
;
1590 #if _USE_LFN /* LFN configuration */
1591 if (c
== DDE
|| (!_FS_RPATH
&& c
== '.') || (int)((a
& ~AM_ARC
) == AM_VOL
) != vol
) { /* An entry without valid data */
1594 if (a
== AM_LFN
) { /* An LFN entry is found */
1595 if (c
& LLE
) { /* Is it start of LFN sequence? */
1596 sum
= dir
[LDIR_Chksum
];
1598 dp
->lfn_idx
= dp
->index
;
1600 /* Check LFN validity and capture it */
1601 ord
= (c
== ord
&& sum
== dir
[LDIR_Chksum
] && pick_lfn(dp
->lfn
, dir
)) ? ord
- 1 : 0xFF;
1602 } else { /* An SFN entry is found */
1603 if (ord
|| sum
!= sum_sfn(dir
)) /* Is there a valid LFN? */
1604 dp
->lfn_idx
= 0xFFFF; /* It has no LFN. */
1608 #else /* Non LFN configuration */
1609 if (c
!= DDE
&& (_FS_RPATH
|| c
!= '.') && a
!= AM_LFN
&& (int)((a
& ~AM_ARC
) == AM_VOL
) == vol
) /* Is it a valid entry? */
1612 res
= dir_next(dp
, 0); /* Next entry */
1613 if (res
!= FR_OK
) break;
1616 if (res
!= FR_OK
) dp
->sect
= 0;
1620 #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
1625 /*-----------------------------------------------------------------------*/
1626 /* Register an object to the directory */
1627 /*-----------------------------------------------------------------------*/
1630 FRESULT
dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
1631 DIR* dp
/* Target directory with object name to be created */
1635 #if _USE_LFN /* LFN configuration */
1637 BYTE sn
[12], *fn
, sum
;
1641 fn
= dp
->fn
; lfn
= dp
->lfn
;
1642 mem_cpy(sn
, fn
, 12);
1644 if (_FS_RPATH
&& (sn
[NSFLAG
] & NS_DOT
)) /* Cannot create dot entry */
1645 return FR_INVALID_NAME
;
1647 if (sn
[NSFLAG
] & NS_LOSS
) { /* When LFN is out of 8.3 format, generate a numbered name */
1648 fn
[NSFLAG
] = 0; dp
->lfn
= 0; /* Find only SFN */
1649 for (n
= 1; n
< 100; n
++) {
1650 gen_numname(fn
, sn
, lfn
, n
); /* Generate a numbered name */
1651 res
= dir_find(dp
); /* Check if the name collides with existing SFN */
1652 if (res
!= FR_OK
) break;
1654 if (n
== 100) return FR_DENIED
; /* Abort if too many collisions */
1655 if (res
!= FR_NO_FILE
) return res
; /* Abort if the result is other than 'not collided' */
1656 fn
[NSFLAG
] = sn
[NSFLAG
]; dp
->lfn
= lfn
;
1659 if (sn
[NSFLAG
] & NS_LFN
) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */
1660 for (n
= 0; lfn
[n
]; n
++) ;
1661 nent
= (n
+ 25) / 13;
1662 } else { /* Otherwise allocate an entry for an SFN */
1665 res
= dir_alloc(dp
, nent
); /* Allocate entries */
1667 if (res
== FR_OK
&& --nent
) { /* Set LFN entry if needed */
1668 res
= dir_sdi(dp
, dp
->index
- nent
);
1670 sum
= sum_sfn(dp
->fn
); /* Sum value of the SFN tied to the LFN */
1671 do { /* Store LFN entries in bottom first */
1672 res
= move_window(dp
->fs
, dp
->sect
);
1673 if (res
!= FR_OK
) break;
1674 fit_lfn(dp
->lfn
, dp
->dir
, (BYTE
)nent
, sum
);
1676 res
= dir_next(dp
, 0); /* Next entry */
1677 } while (res
== FR_OK
&& --nent
);
1680 #else /* Non LFN configuration */
1681 res
= dir_alloc(dp
, 1); /* Allocate an entry for SFN */
1684 if (res
== FR_OK
) { /* Set SFN entry */
1685 res
= move_window(dp
->fs
, dp
->sect
);
1687 mem_set(dp
->dir
, 0, SZ_DIR
); /* Clean the entry */
1688 mem_cpy(dp
->dir
, dp
->fn
, 11); /* Put SFN */
1690 dp
->dir
[DIR_NTres
] = dp
->fn
[NSFLAG
] & (NS_BODY
| NS_EXT
); /* Put NT flag */
1698 #endif /* !_FS_READONLY */
1703 /*-----------------------------------------------------------------------*/
1704 /* Remove an object from the directory */
1705 /*-----------------------------------------------------------------------*/
1706 #if !_FS_READONLY && !_FS_MINIMIZE
1708 FRESULT
dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
1709 DIR* dp
/* Directory object pointing the entry to be removed */
1713 #if _USE_LFN /* LFN configuration */
1716 i
= dp
->index
; /* SFN index */
1717 res
= dir_sdi(dp
, (dp
->lfn_idx
== 0xFFFF) ? i
: dp
->lfn_idx
); /* Goto the SFN or top of the LFN entries */
1720 res
= move_window(dp
->fs
, dp
->sect
);
1721 if (res
!= FR_OK
) break;
1722 mem_set(dp
->dir
, 0, SZ_DIR
); /* Clear and mark the entry "deleted" */
1725 if (dp
->index
>= i
) break; /* When reached SFN, all entries of the object has been deleted. */
1726 res
= dir_next(dp
, 0); /* Next entry */
1727 } while (res
== FR_OK
);
1728 if (res
== FR_NO_FILE
) res
= FR_INT_ERR
;
1731 #else /* Non LFN configuration */
1732 res
= dir_sdi(dp
, dp
->index
);
1734 res
= move_window(dp
->fs
, dp
->sect
);
1736 mem_set(dp
->dir
, 0, SZ_DIR
); /* Clear and mark the entry "deleted" */
1745 #endif /* !_FS_READONLY */
1750 /*-----------------------------------------------------------------------*/
1751 /* Get file information from directory entry */
1752 /*-----------------------------------------------------------------------*/
1753 #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
1755 void get_fileinfo ( /* No return code */
1756 DIR* dp
, /* Pointer to the directory object */
1757 FILINFO
* fno
/* Pointer to the file information to be filled */
1765 if (dp
->sect
) { /* Get SFN */
1766 BYTE
*dir
= dp
->dir
;
1769 while (i
< 11) { /* Copy name body and extension */
1770 c
= (TCHAR
)dir
[i
++];
1771 if (c
== ' ') continue; /* Skip padding spaces */
1772 if (c
== NDDE
) c
= (TCHAR
)DDE
; /* Restore replaced DDE character */
1773 if (i
== 9) *p
++ = '.'; /* Insert a . if extension is exist */
1775 if (IsUpper(c
) && (dir
[DIR_NTres
] & (i
>= 9 ? NS_EXT
: NS_BODY
)))
1776 c
+= 0x20; /* To lower */
1778 if (IsDBCS1(c
) && i
!= 8 && i
!= 11 && IsDBCS2(dir
[i
]))
1779 c
= c
<< 8 | dir
[i
++];
1780 c
= ff_convert(c
, 1); /* OEM -> Unicode */
1786 fno
->fattrib
= dir
[DIR_Attr
]; /* Attribute */
1787 fno
->fsize
= LD_DWORD(dir
+DIR_FileSize
); /* Size */
1788 fno
->fdate
= LD_WORD(dir
+DIR_WrtDate
); /* Date */
1789 fno
->ftime
= LD_WORD(dir
+DIR_WrtTime
); /* Time */
1791 *p
= 0; /* Terminate SFN string by a \0 */
1797 i
= 0; p
= fno
->lfname
;
1798 if (dp
->sect
&& fno
->lfsize
&& dp
->lfn_idx
!= 0xFFFF) { /* Get LFN if available */
1800 while ((w
= *lfn
++) != 0) { /* Get an LFN character */
1802 w
= ff_convert(w
, 0); /* Unicode -> OEM */
1803 if (!w
) { i
= 0; break; } /* No LFN if it could not be converted */
1804 if (_DF1S
&& w
>= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
1805 p
[i
++] = (TCHAR
)(w
>> 8);
1807 if (i
>= fno
->lfsize
- 1) { i
= 0; break; } /* No LFN if buffer overflow */
1811 p
[i
] = 0; /* Terminate LFN string by a \0 */
1815 #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2*/
1820 /*-----------------------------------------------------------------------*/
1821 /* Pick a segment and create the object name in directory form */
1822 /*-----------------------------------------------------------------------*/
1825 FRESULT
create_name (
1826 DIR* dp
, /* Pointer to the directory object */
1827 const TCHAR
** path
/* Pointer to pointer to the segment in the path string */
1830 #if _USE_LFN /* LFN configuration */
1836 /* Create LFN in Unicode */
1837 for (p
= *path
; *p
== '/' || *p
== '\\'; p
++) ; /* Strip duplicated separator */
1841 w
= p
[si
++]; /* Get a character */
1842 if (w
< ' ' || w
== '/' || w
== '\\') break; /* Break on end of segment */
1843 if (di
>= _MAX_LFN
) /* Reject too long name */
1844 return FR_INVALID_NAME
;
1847 if (IsDBCS1(w
)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
1848 b
= (BYTE
)p
[si
++]; /* Get 2nd byte */
1850 return FR_INVALID_NAME
; /* Reject invalid sequence */
1851 w
= (w
<< 8) + b
; /* Create a DBC */
1853 w
= ff_convert(w
, 1); /* Convert ANSI/OEM to Unicode */
1854 if (!w
) return FR_INVALID_NAME
; /* Reject invalid code */
1856 if (w
< 0x80 && chk_chr("\"*:<>\?|\x7F", w
)) /* Reject illegal characters for LFN */
1857 return FR_INVALID_NAME
;
1858 lfn
[di
++] = w
; /* Store the Unicode character */
1860 *path
= &p
[si
]; /* Return pointer to the next segment */
1861 cf
= (w
< ' ') ? NS_LAST
: 0; /* Set last segment flag if end of path */
1863 if ((di
== 1 && lfn
[di
-1] == '.') || /* Is this a dot entry? */
1864 (di
== 2 && lfn
[di
-1] == '.' && lfn
[di
-2] == '.')) {
1866 for (i
= 0; i
< 11; i
++)
1867 dp
->fn
[i
] = (i
< di
) ? '.' : ' ';
1868 dp
->fn
[i
] = cf
| NS_DOT
; /* This is a dot entry */
1872 while (di
) { /* Strip trailing spaces and dots */
1874 if (w
!= ' ' && w
!= '.') break;
1877 if (!di
) return FR_INVALID_NAME
; /* Reject nul string */
1879 lfn
[di
] = 0; /* LFN is created */
1881 /* Create SFN in directory form */
1882 mem_set(dp
->fn
, ' ', 11);
1883 for (si
= 0; lfn
[si
] == ' ' || lfn
[si
] == '.'; si
++) ; /* Strip leading spaces and dots */
1884 if (si
) cf
|= NS_LOSS
| NS_LFN
;
1885 while (di
&& lfn
[di
- 1] != '.') di
--; /* Find extension (di<=si: no extension) */
1889 w
= lfn
[si
++]; /* Get an LFN character */
1890 if (!w
) break; /* Break on end of the LFN */
1891 if (w
== ' ' || (w
== '.' && si
!= di
)) { /* Remove spaces and dots */
1892 cf
|= NS_LOSS
| NS_LFN
; continue;
1895 if (i
>= ni
|| si
== di
) { /* Extension or end of SFN */
1896 if (ni
== 11) { /* Long extension */
1897 cf
|= NS_LOSS
| NS_LFN
; break;
1899 if (si
!= di
) cf
|= NS_LOSS
| NS_LFN
; /* Out of 8.3 format */
1900 if (si
> di
) break; /* No extension */
1901 si
= di
; i
= 8; ni
= 11; /* Enter extension section */
1905 if (w
>= 0x80) { /* Non ASCII character */
1907 w
= ff_convert(w
, 0); /* Unicode -> OEM code */
1908 if (w
) w
= ExCvt
[w
- 0x80]; /* Convert extended character to upper (SBCS) */
1910 w
= ff_convert(ff_wtoupper(w
), 0); /* Upper converted Unicode -> OEM code */
1912 cf
|= NS_LFN
; /* Force create LFN entry */
1915 if (_DF1S
&& w
>= 0x100) { /* Double byte character (always false on SBCS cfg) */
1917 cf
|= NS_LOSS
| NS_LFN
; i
= ni
; continue;
1919 dp
->fn
[i
++] = (BYTE
)(w
>> 8);
1920 } else { /* Single byte character */
1921 if (!w
|| chk_chr("+,;=[]", w
)) { /* Replace illegal characters for SFN */
1922 w
= '_'; cf
|= NS_LOSS
| NS_LFN
;/* Lossy conversion */
1924 if (IsUpper(w
)) { /* ASCII large capital */
1927 if (IsLower(w
)) { /* ASCII small capital */
1933 dp
->fn
[i
++] = (BYTE
)w
;
1936 if (dp
->fn
[0] == DDE
) dp
->fn
[0] = NDDE
; /* If the first character collides with deleted mark, replace it with 0x05 */
1938 if (ni
== 8) b
<<= 2;
1939 if ((b
& 0x0C) == 0x0C || (b
& 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
1941 if (!(cf
& NS_LFN
)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
1942 if ((b
& 0x03) == 0x01) cf
|= NS_EXT
; /* NT flag (Extension has only small capital) */
1943 if ((b
& 0x0C) == 0x04) cf
|= NS_BODY
; /* NT flag (Filename has only small capital) */
1946 dp
->fn
[NSFLAG
] = cf
; /* SFN is created */
1951 #else /* Non-LFN configuration */
1956 /* Create file name in directory form */
1957 for (p
= *path
; *p
== '/' || *p
== '\\'; p
++) ; /* Strip duplicated separator */
1959 mem_set(sfn
, ' ', 11);
1960 si
= i
= b
= 0; ni
= 8;
1962 if (p
[si
] == '.') { /* Is this a dot entry? */
1965 if (c
!= '.' || si
>= 3) break;
1968 if (c
!= '/' && c
!= '\\' && c
> ' ') return FR_INVALID_NAME
;
1969 *path
= &p
[si
]; /* Return pointer to the next segment */
1970 sfn
[NSFLAG
] = (c
<= ' ') ? NS_LAST
| NS_DOT
: NS_DOT
; /* Set last segment flag if end of path */
1976 if (c
<= ' ' || c
== '/' || c
== '\\') break; /* Break on end of segment */
1977 if (c
== '.' || i
>= ni
) {
1978 if (ni
!= 8 || c
!= '.') return FR_INVALID_NAME
;
1982 if (c
>= 0x80) { /* Extended character? */
1983 b
|= 3; /* Eliminate NT flag */
1985 c
= ExCvt
[c
- 0x80]; /* To upper extended characters (SBCS cfg) */
1988 return FR_INVALID_NAME
; /* Reject extended characters (ASCII cfg) */
1992 if (IsDBCS1(c
)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
1993 d
= (BYTE
)p
[si
++]; /* Get 2nd byte */
1994 if (!IsDBCS2(d
) || i
>= ni
- 1) /* Reject invalid DBC */
1995 return FR_INVALID_NAME
;
1998 } else { /* Single byte code */
1999 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c
)) /* Reject illegal chrs for SFN */
2000 return FR_INVALID_NAME
;
2001 if (IsUpper(c
)) { /* ASCII large capital? */
2004 if (IsLower(c
)) { /* ASCII small capital? */
2011 *path
= &p
[si
]; /* Return pointer to the next segment */
2012 c
= (c
<= ' ') ? NS_LAST
: 0; /* Set last segment flag if end of path */
2014 if (!i
) return FR_INVALID_NAME
; /* Reject nul string */
2015 if (sfn
[0] == DDE
) sfn
[0] = NDDE
; /* When first character collides with DDE, replace it with 0x05 */
2017 if (ni
== 8) b
<<= 2;
2018 if ((b
& 0x03) == 0x01) c
|= NS_EXT
; /* NT flag (Name extension has only small capital) */
2019 if ((b
& 0x0C) == 0x04) c
|= NS_BODY
; /* NT flag (Name body has only small capital) */
2021 sfn
[NSFLAG
] = c
; /* Store NT flag, File name is created */
2030 /*-----------------------------------------------------------------------*/
2031 /* Follow a file path */
2032 /*-----------------------------------------------------------------------*/
2035 FRESULT
follow_path ( /* FR_OK(0): successful, !=0: error code */
2036 DIR* dp
, /* Directory object to return last directory and found object */
2037 const TCHAR
* path
/* Full-path string to find a file or directory */
2045 if (*path
== '/' || *path
== '\\') { /* There is a heading separator */
2046 path
++; dp
->sclust
= 0; /* Strip it and start from the root directory */
2047 } else { /* No heading separator */
2048 dp
->sclust
= dp
->fs
->cdir
; /* Start from the current directory */
2051 if (*path
== '/' || *path
== '\\') /* Strip heading separator if exist */
2053 dp
->sclust
= 0; /* Always start from the root directory */
2056 if ((UINT
)*path
< ' ') { /* Null path name is the origin directory itself */
2057 res
= dir_sdi(dp
, 0);
2059 } else { /* Follow path */
2061 res
= create_name(dp
, &path
); /* Get a segment name of the path */
2062 if (res
!= FR_OK
) break;
2063 res
= dir_find(dp
); /* Find an object with the sagment name */
2064 ns
= dp
->fn
[NSFLAG
];
2065 if (res
!= FR_OK
) { /* Failed to find the object */
2066 if (res
== FR_NO_FILE
) { /* Object is not found */
2067 if (_FS_RPATH
&& (ns
& NS_DOT
)) { /* If dot entry is not exist, */
2068 dp
->sclust
= 0; dp
->dir
= 0; /* it is the root directory and stay there */
2069 if (!(ns
& NS_LAST
)) continue; /* Continue to follow if not last segment */
2070 res
= FR_OK
; /* Ended at the root directroy. Function completed. */
2071 } else { /* Could not find the object */
2072 if (!(ns
& NS_LAST
)) res
= FR_NO_PATH
; /* Adjust error code if not last segment */
2077 if (ns
& NS_LAST
) break; /* Last segment matched. Function completed. */
2078 dir
= dp
->dir
; /* Follow the sub-directory */
2079 if (!(dir
[DIR_Attr
] & AM_DIR
)) { /* It is not a sub-directory and cannot follow */
2080 res
= FR_NO_PATH
; break;
2082 dp
->sclust
= ld_clust(dp
->fs
, dir
);
2092 /*-----------------------------------------------------------------------*/
2093 /* Get logical drive number from path name */
2094 /*-----------------------------------------------------------------------*/
2097 int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
2098 const TCHAR
** path
/* Pointer to pointer to the path name */
2101 const TCHAR
*tp
, *tt
;
2106 if (*path
) { /* If the pointer is not a null */
2107 for (tt
= *path
; (UINT
)*tt
>= (_USE_LFN
? ' ' : '!') && *tt
!= ':'; tt
++) ; /* Find ':' in the path */
2108 if (*tt
== ':') { /* If a ':' is exist in the path name */
2111 if (i
< 10 && tp
== tt
) { /* Is there a numeric drive id? */
2112 if (i
< _VOLUMES
) { /* If a drive id is found, get the value and strip it */
2116 } else { /* No numeric drive number */
2117 #if _STR_VOLUME_ID /* Find string drive id */
2118 static const char* const str
[] = {_VOLUME_STRS
};
2125 sp
= str
[i
]; tp
= *path
;
2126 do { /* Compare a string drive id with path name */
2127 c
= *sp
++; tc
= *tp
++;
2128 if (IsLower(tc
)) tc
-= 0x20;
2129 } while (c
&& (TCHAR
)c
== tc
);
2130 } while ((c
|| tp
!= tt
) && ++i
< _VOLUMES
); /* Repeat for each id until pattern match */
2131 if (i
< _VOLUMES
) { /* If a drive id is found, get the value and strip it */
2139 #if _FS_RPATH && _VOLUMES >= 2
2140 vol
= CurrVol
; /* Current drive */
2142 vol
= 0; /* Drive 0 */
2151 /*-----------------------------------------------------------------------*/
2152 /* Load a sector and check if it is an FAT boot sector */
2153 /*-----------------------------------------------------------------------*/
2156 BYTE
check_fs ( /* 0:FAT boor sector, 1:Valid boor sector but not FAT, 2:Not a boot sector, 3:Disk error */
2157 FATFS
* fs
, /* File system object */
2158 DWORD sect
/* Sector# (lba) to check if it is an FAT boot record or not */
2161 fs
->wflag
= 0; fs
->winsect
= 0xFFFFFFFF; /* Invaidate window */
2162 if (move_window(fs
, sect
) != FR_OK
) /* Load boot record */
2165 if (LD_WORD(&fs
->win
[BS_55AA
]) != 0xAA55) /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
2168 if ((LD_DWORD(&fs
->win
[BS_FilSysType
]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
2170 if ((LD_DWORD(&fs
->win
[BS_FilSysType32
]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
2179 /*-----------------------------------------------------------------------*/
2180 /* Find logical drive and check if the volume is mounted */
2181 /*-----------------------------------------------------------------------*/
2184 FRESULT
find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
2185 FATFS
** rfs
, /* Pointer to pointer to the found file system object */
2186 const TCHAR
** path
, /* Pointer to pointer to the path name (drive number) */
2187 BYTE wmode
/* !=0: Check write protection for write access */
2193 DWORD bsect
, fasize
, tsect
, sysect
, nclst
, szbfat
;
2198 /* Get logical drive number from the path name */
2200 vol
= get_ldnumber(path
);
2201 if (vol
< 0) return FR_INVALID_DRIVE
;
2203 /* Check if the file system object is valid or not */
2204 fs
= FatFs
[vol
]; /* Get pointer to the file system object */
2205 if (!fs
) return FR_NOT_ENABLED
; /* Is the file system object available? */
2207 ENTER_FF(fs
); /* Lock the volume */
2208 *rfs
= fs
; /* Return pointer to the file system object */
2210 if (fs
->fs_type
) { /* If the volume has been mounted */
2211 stat
= disk_status(fs
->drv
);
2212 if (!(stat
& STA_NOINIT
)) { /* and the physical drive is kept initialized */
2213 if (!_FS_READONLY
&& wmode
&& (stat
& STA_PROTECT
)) /* Check write protection if needed */
2214 return FR_WRITE_PROTECTED
;
2215 return FR_OK
; /* The file system object is valid */
2219 /* The file system object is not valid. */
2220 /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
2222 fs
->fs_type
= 0; /* Clear the file system object */
2223 fs
->drv
= LD2PD(vol
); /* Bind the logical drive and a physical drive */
2224 stat
= disk_initialize(fs
->drv
); /* Initialize the physical drive */
2225 if (stat
& STA_NOINIT
) /* Check if the initialization succeeded */
2226 return FR_NOT_READY
; /* Failed to initialize due to no medium or hard error */
2227 if (!_FS_READONLY
&& wmode
&& (stat
& STA_PROTECT
)) /* Check disk write protection if needed */
2228 return FR_WRITE_PROTECTED
;
2229 #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
2230 if (disk_ioctl(fs
->drv
, GET_SECTOR_SIZE
, &SS(fs
)) != RES_OK
2231 || SS(fs
) < _MIN_SS
|| SS(fs
) > _MAX_SS
) return FR_DISK_ERR
;
2233 /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
2235 fmt
= check_fs(fs
, bsect
); /* Load sector 0 and check if it is an FAT boot sector as SFD */
2236 if (fmt
== 1 || (!fmt
&& (LD2PT(vol
)))) { /* Not an FAT boot sector or forced partition number */
2240 for (i
= 0; i
< 4; i
++) { /* Get partition offset */
2241 BYTE
*pt
= fs
->win
+MBR_Table
+ i
* SZ_PTE
;
2242 br
[i
] = pt
[4] ? LD_DWORD(&pt
[8]) : 0;
2244 i
= LD2PT(vol
); /* Partition number: 0:auto, 1-4:forced */
2246 do { /* Find an FAT volume */
2248 fmt
= bsect
? check_fs(fs
, bsect
) : 2; /* Check the partition */
2249 } while (!LD2PT(vol
) && fmt
&& ++i
< 4);
2251 if (fmt
== 3) return FR_DISK_ERR
; /* An error occured in the disk I/O layer */
2252 if (fmt
) return FR_NO_FILESYSTEM
; /* No FAT volume is found */
2254 /* An FAT volume is found. Following code initializes the file system object */
2256 if (LD_WORD(fs
->win
+BPB_BytsPerSec
) != SS(fs
)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
2257 return FR_NO_FILESYSTEM
;
2259 fasize
= LD_WORD(fs
->win
+BPB_FATSz16
); /* Number of sectors per FAT */
2260 if (!fasize
) fasize
= LD_DWORD(fs
->win
+BPB_FATSz32
);
2263 fs
->n_fats
= fs
->win
[BPB_NumFATs
]; /* Number of FAT copies */
2264 if (fs
->n_fats
!= 1 && fs
->n_fats
!= 2) /* (Must be 1 or 2) */
2265 return FR_NO_FILESYSTEM
;
2266 fasize
*= fs
->n_fats
; /* Number of sectors for FAT area */
2268 fs
->csize
= fs
->win
[BPB_SecPerClus
]; /* Number of sectors per cluster */
2269 if (!fs
->csize
|| (fs
->csize
& (fs
->csize
- 1))) /* (Must be power of 2) */
2270 return FR_NO_FILESYSTEM
;
2272 fs
->n_rootdir
= LD_WORD(fs
->win
+BPB_RootEntCnt
); /* Number of root directory entries */
2273 if (fs
->n_rootdir
% (SS(fs
) / SZ_DIR
)) /* (Must be sector aligned) */
2274 return FR_NO_FILESYSTEM
;
2276 tsect
= LD_WORD(fs
->win
+BPB_TotSec16
); /* Number of sectors on the volume */
2277 if (!tsect
) tsect
= LD_DWORD(fs
->win
+BPB_TotSec32
);
2279 nrsv
= LD_WORD(fs
->win
+BPB_RsvdSecCnt
); /* Number of reserved sectors */
2280 if (!nrsv
) return FR_NO_FILESYSTEM
; /* (Must not be 0) */
2282 /* Determine the FAT sub type */
2283 sysect
= nrsv
+ fasize
+ fs
->n_rootdir
/ (SS(fs
) / SZ_DIR
); /* RSV+FAT+DIR */
2284 if (tsect
< sysect
) return FR_NO_FILESYSTEM
; /* (Invalid volume size) */
2285 nclst
= (tsect
- sysect
) / fs
->csize
; /* Number of clusters */
2286 if (!nclst
) return FR_NO_FILESYSTEM
; /* (Invalid volume size) */
2288 if (nclst
>= MIN_FAT16
) fmt
= FS_FAT16
;
2289 if (nclst
>= MIN_FAT32
) fmt
= FS_FAT32
;
2291 /* Boundaries and Limits */
2292 fs
->n_fatent
= nclst
+ 2; /* Number of FAT entries */
2293 fs
->volbase
= bsect
; /* Volume start sector */
2294 fs
->fatbase
= bsect
+ nrsv
; /* FAT start sector */
2295 fs
->database
= bsect
+ sysect
; /* Data start sector */
2296 if (fmt
== FS_FAT32
) {
2297 if (fs
->n_rootdir
) return FR_NO_FILESYSTEM
; /* (BPB_RootEntCnt must be 0) */
2298 fs
->dirbase
= LD_DWORD(fs
->win
+BPB_RootClus
); /* Root directory start cluster */
2299 szbfat
= fs
->n_fatent
* 4; /* (Needed FAT size) */
2301 if (!fs
->n_rootdir
) return FR_NO_FILESYSTEM
; /* (BPB_RootEntCnt must not be 0) */
2302 fs
->dirbase
= fs
->fatbase
+ fasize
; /* Root directory start sector */
2303 szbfat
= (fmt
== FS_FAT16
) ? /* (Needed FAT size) */
2304 fs
->n_fatent
* 2 : fs
->n_fatent
* 3 / 2 + (fs
->n_fatent
& 1);
2306 if (fs
->fsize
< (szbfat
+ (SS(fs
) - 1)) / SS(fs
)) /* (BPB_FATSz must not be less than the size needed) */
2307 return FR_NO_FILESYSTEM
;
2310 /* Initialize cluster allocation information */
2311 fs
->last_clust
= fs
->free_clust
= 0xFFFFFFFF;
2313 /* Get fsinfo if available */
2314 fs
->fsi_flag
= 0x80;
2315 #if (_FS_NOFSINFO & 3) != 3
2316 if (fmt
== FS_FAT32
/* Enable FSINFO only if FAT32 and BPB_FSInfo is 1 */
2317 && LD_WORD(fs
->win
+BPB_FSInfo
) == 1
2318 && move_window(fs
, bsect
+ 1) == FR_OK
)
2321 if (LD_WORD(fs
->win
+BS_55AA
) == 0xAA55 /* Load FSINFO data if available */
2322 && LD_DWORD(fs
->win
+FSI_LeadSig
) == 0x41615252
2323 && LD_DWORD(fs
->win
+FSI_StrucSig
) == 0x61417272)
2325 #if (_FS_NOFSINFO & 1) == 0
2326 fs
->free_clust
= LD_DWORD(fs
->win
+FSI_Free_Count
);
2328 #if (_FS_NOFSINFO & 2) == 0
2329 fs
->last_clust
= LD_DWORD(fs
->win
+FSI_Nxt_Free
);
2335 fs
->fs_type
= fmt
; /* FAT sub-type */
2336 fs
->id
= ++Fsid
; /* File system mount ID */
2338 fs
->cdir
= 0; /* Set current directory to root */
2340 #if _FS_LOCK /* Clear file lock semaphores */
2350 /*-----------------------------------------------------------------------*/
2351 /* Check if the file/directory object is valid or not */
2352 /*-----------------------------------------------------------------------*/
2355 FRESULT
validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
2356 void* obj
/* Pointer to the object FIL/DIR to check validity */
2359 FIL
*fil
= (FIL
*)obj
; /* Assuming offset of .fs and .id in the FIL/DIR structure is identical */
2362 if (!fil
|| !fil
->fs
|| !fil
->fs
->fs_type
|| fil
->fs
->id
!= fil
->id
)
2363 return FR_INVALID_OBJECT
;
2365 ENTER_FF(fil
->fs
); /* Lock file system */
2367 if (disk_status(fil
->fs
->drv
) & STA_NOINIT
)
2368 return FR_NOT_READY
;
2376 /*--------------------------------------------------------------------------
2380 --------------------------------------------------------------------------*/
2384 /*-----------------------------------------------------------------------*/
2385 /* Mount/Unmount a Logical Drive */
2386 /*-----------------------------------------------------------------------*/
2389 FATFS
* fs
, /* Pointer to the file system object (NULL:unmount)*/
2390 const TCHAR
* path
, /* Logical drive number to be mounted/unmounted */
2391 BYTE opt
/* 0:Do not mount (delayed mount), 1:Mount immediately */
2397 const TCHAR
*rp
= path
;
2400 vol
= get_ldnumber(&rp
);
2401 if (vol
< 0) return FR_INVALID_DRIVE
;
2402 cfs
= FatFs
[vol
]; /* Pointer to fs object */
2408 #if _FS_REENTRANT /* Discard sync object of the current volume */
2409 if (!ff_del_syncobj(cfs
->sobj
)) return FR_INT_ERR
;
2411 cfs
->fs_type
= 0; /* Clear old fs object */
2415 fs
->fs_type
= 0; /* Clear new fs object */
2416 #if _FS_REENTRANT /* Create sync object for the new volume */
2417 if (!ff_cre_syncobj((BYTE
)vol
, &fs
->sobj
)) return FR_INT_ERR
;
2420 FatFs
[vol
] = fs
; /* Register new fs object */
2422 if (!fs
|| opt
!= 1) return FR_OK
; /* Do not mount now, it will be mounted later */
2424 res
= find_volume(&fs
, &path
, 0); /* Force mounted the volume */
2431 /*-----------------------------------------------------------------------*/
2432 /* Open or Create a File */
2433 /*-----------------------------------------------------------------------*/
2436 FIL
* fp
, /* Pointer to the blank file object */
2437 const TCHAR
* path
, /* Pointer to the file name */
2438 BYTE mode
/* Access mode and file open mode flags */
2447 if (!fp
) return FR_INVALID_OBJECT
;
2448 fp
->fs
= 0; /* Clear file object */
2450 /* Get logical drive number */
2452 mode
&= FA_READ
| FA_WRITE
| FA_CREATE_ALWAYS
| FA_OPEN_ALWAYS
| FA_CREATE_NEW
;
2453 res
= find_volume(&dj
.fs
, &path
, (BYTE
)(mode
& ~FA_READ
));
2456 res
= find_volume(&dj
.fs
, &path
, 0);
2460 res
= follow_path(&dj
, path
); /* Follow the file path */
2462 #if !_FS_READONLY /* R/W configuration */
2464 if (!dir
) /* Default directory itself */
2465 res
= FR_INVALID_NAME
;
2468 res
= chk_lock(&dj
, (mode
& ~FA_READ
) ? 1 : 0);
2471 /* Create or Open a file */
2472 if (mode
& (FA_CREATE_ALWAYS
| FA_OPEN_ALWAYS
| FA_CREATE_NEW
)) {
2475 if (res
!= FR_OK
) { /* No file, create new */
2476 if (res
== FR_NO_FILE
) /* There is no file to open, create a new entry */
2478 res
= enq_lock() ? dir_register(&dj
) : FR_TOO_MANY_OPEN_FILES
;
2480 res
= dir_register(&dj
);
2482 mode
|= FA_CREATE_ALWAYS
; /* File is created */
2483 dir
= dj
.dir
; /* New entry */
2485 else { /* Any object is already existing */
2486 if (dir
[DIR_Attr
] & (AM_RDO
| AM_DIR
)) { /* Cannot overwrite it (R/O or DIR) */
2489 if (mode
& FA_CREATE_NEW
) /* Cannot create as new file */
2493 if (res
== FR_OK
&& (mode
& FA_CREATE_ALWAYS
)) { /* Truncate it if overwrite mode */
2494 dw
= GET_FATTIME(); /* Created time */
2495 ST_DWORD(dir
+DIR_CrtTime
, dw
);
2496 dir
[DIR_Attr
] = 0; /* Reset attribute */
2497 ST_DWORD(dir
+DIR_FileSize
, 0); /* size = 0 */
2498 cl
= ld_clust(dj
.fs
, dir
); /* Get start cluster */
2499 st_clust(dir
, 0); /* cluster = 0 */
2501 if (cl
) { /* Remove the cluster chain if exist */
2502 dw
= dj
.fs
->winsect
;
2503 res
= remove_chain(dj
.fs
, cl
);
2505 dj
.fs
->last_clust
= cl
- 1; /* Reuse the cluster hole */
2506 res
= move_window(dj
.fs
, dw
);
2511 else { /* Open an existing file */
2512 if (res
== FR_OK
) { /* Follow succeeded */
2513 if (dir
[DIR_Attr
] & AM_DIR
) { /* It is a directory */
2516 if ((mode
& FA_WRITE
) && (dir
[DIR_Attr
] & AM_RDO
)) /* R/O violation */
2522 if (mode
& FA_CREATE_ALWAYS
) /* Set file change flag if created or overwritten */
2523 mode
|= FA__WRITTEN
;
2524 fp
->dir_sect
= dj
.fs
->winsect
; /* Pointer to the directory entry */
2527 fp
->lockid
= inc_lock(&dj
, (mode
& ~FA_READ
) ? 1 : 0);
2528 if (!fp
->lockid
) res
= FR_INT_ERR
;
2532 #else /* R/O configuration */
2533 if (res
== FR_OK
) { /* Follow succeeded */
2535 if (!dir
) { /* Current directory itself */
2536 res
= FR_INVALID_NAME
;
2538 if (dir
[DIR_Attr
] & AM_DIR
) /* It is a directory */
2546 fp
->flag
= mode
; /* File access mode */
2547 fp
->err
= 0; /* Clear error flag */
2548 fp
->sclust
= ld_clust(dj
.fs
, dir
); /* File start cluster */
2549 fp
->fsize
= LD_DWORD(dir
+DIR_FileSize
); /* File size */
2550 fp
->fptr
= 0; /* File pointer */
2553 fp
->cltbl
= 0; /* Normal seek mode */
2555 fp
->fs
= dj
.fs
; /* Validate file object */
2556 fp
->id
= fp
->fs
->id
;
2560 LEAVE_FF(dj
.fs
, res
);
2566 /*-----------------------------------------------------------------------*/
2568 /*-----------------------------------------------------------------------*/
2571 FIL
* fp
, /* Pointer to the file object */
2572 void* buff
, /* Pointer to data buffer */
2573 UINT btr
, /* Number of bytes to read */
2574 UINT
* br
/* Pointer to number of bytes read */
2578 DWORD clst
, sect
, remain
;
2580 BYTE csect
, *rbuff
= (BYTE
*)buff
;
2583 *br
= 0; /* Clear read byte counter */
2585 res
= validate(fp
); /* Check validity */
2586 if (res
!= FR_OK
) LEAVE_FF(fp
->fs
, res
);
2587 if (fp
->err
) /* Check error */
2588 LEAVE_FF(fp
->fs
, (FRESULT
)fp
->err
);
2589 if (!(fp
->flag
& FA_READ
)) /* Check access mode */
2590 LEAVE_FF(fp
->fs
, FR_DENIED
);
2591 remain
= fp
->fsize
- fp
->fptr
;
2592 if (btr
> remain
) btr
= (UINT
)remain
; /* Truncate btr by remaining bytes */
2594 for ( ; btr
; /* Repeat until all data read */
2595 rbuff
+= rcnt
, fp
->fptr
+= rcnt
, *br
+= rcnt
, btr
-= rcnt
) {
2596 if ((fp
->fptr
% SS(fp
->fs
)) == 0) { /* On the sector boundary? */
2597 csect
= (BYTE
)(fp
->fptr
/ SS(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
2598 if (!csect
) { /* On the cluster boundary? */
2599 if (fp
->fptr
== 0) { /* On the top of the file? */
2600 clst
= fp
->sclust
; /* Follow from the origin */
2601 } else { /* Middle or end of the file */
2604 clst
= clmt_clust(fp
, fp
->fptr
); /* Get cluster# from the CLMT */
2607 clst
= get_fat(fp
->fs
, fp
->clust
); /* Follow cluster chain on the FAT */
2609 if (clst
< 2) ABORT(fp
->fs
, FR_INT_ERR
);
2610 if (clst
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
2611 fp
->clust
= clst
; /* Update current cluster */
2613 sect
= clust2sect(fp
->fs
, fp
->clust
); /* Get current sector */
2614 if (!sect
) ABORT(fp
->fs
, FR_INT_ERR
);
2616 cc
= btr
/ SS(fp
->fs
); /* When remaining bytes >= sector size, */
2617 if (cc
) { /* Read maximum contiguous sectors directly */
2618 if (csect
+ cc
> fp
->fs
->csize
) /* Clip at cluster boundary */
2619 cc
= fp
->fs
->csize
- csect
;
2620 if (disk_read(fp
->fs
->drv
, rbuff
, sect
, cc
) != RES_OK
)
2621 ABORT(fp
->fs
, FR_DISK_ERR
);
2622 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
2624 if (fp
->fs
->wflag
&& fp
->fs
->winsect
- sect
< cc
)
2625 mem_cpy(rbuff
+ ((fp
->fs
->winsect
- sect
) * SS(fp
->fs
)), fp
->fs
->win
, SS(fp
->fs
));
2627 if ((fp
->flag
& FA__DIRTY
) && fp
->dsect
- sect
< cc
)
2628 mem_cpy(rbuff
+ ((fp
->dsect
- sect
) * SS(fp
->fs
)), fp
->buf
, SS(fp
->fs
));
2631 rcnt
= SS(fp
->fs
) * cc
; /* Number of bytes transferred */
2635 if (fp
->dsect
!= sect
) { /* Load data sector if not in cache */
2637 if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
2638 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
2639 ABORT(fp
->fs
, FR_DISK_ERR
);
2640 fp
->flag
&= ~FA__DIRTY
;
2643 if (disk_read(fp
->fs
->drv
, fp
->buf
, sect
, 1) != RES_OK
) /* Fill sector cache */
2644 ABORT(fp
->fs
, FR_DISK_ERR
);
2649 rcnt
= SS(fp
->fs
) - ((UINT
)fp
->fptr
% SS(fp
->fs
)); /* Get partial sector data from sector buffer */
2650 if (rcnt
> btr
) rcnt
= btr
;
2652 if (move_window(fp
->fs
, fp
->dsect
) != FR_OK
) /* Move sector window */
2653 ABORT(fp
->fs
, FR_DISK_ERR
);
2654 mem_cpy(rbuff
, &fp
->fs
->win
[fp
->fptr
% SS(fp
->fs
)], rcnt
); /* Pick partial sector */
2656 mem_cpy(rbuff
, &fp
->buf
[fp
->fptr
% SS(fp
->fs
)], rcnt
); /* Pick partial sector */
2660 LEAVE_FF(fp
->fs
, FR_OK
);
2667 /*-----------------------------------------------------------------------*/
2669 /*-----------------------------------------------------------------------*/
2672 FIL
* fp
, /* Pointer to the file object */
2673 const void *buff
, /* Pointer to the data to be written */
2674 UINT btw
, /* Number of bytes to write */
2675 UINT
* bw
/* Pointer to number of bytes written */
2681 const BYTE
*wbuff
= (const BYTE
*)buff
;
2685 *bw
= 0; /* Clear write byte counter */
2687 res
= validate(fp
); /* Check validity */
2688 if (res
!= FR_OK
) LEAVE_FF(fp
->fs
, res
);
2689 if (fp
->err
) /* Check error */
2690 LEAVE_FF(fp
->fs
, (FRESULT
)fp
->err
);
2691 if (!(fp
->flag
& FA_WRITE
)) /* Check access mode */
2692 LEAVE_FF(fp
->fs
, FR_DENIED
);
2693 if (fp
->fptr
+ btw
< fp
->fptr
) btw
= 0; /* File size cannot reach 4GB */
2695 for ( ; btw
; /* Repeat until all data written */
2696 wbuff
+= wcnt
, fp
->fptr
+= wcnt
, *bw
+= wcnt
, btw
-= wcnt
) {
2697 if ((fp
->fptr
% SS(fp
->fs
)) == 0) { /* On the sector boundary? */
2698 csect
= (BYTE
)(fp
->fptr
/ SS(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
2699 if (!csect
) { /* On the cluster boundary? */
2700 if (fp
->fptr
== 0) { /* On the top of the file? */
2701 clst
= fp
->sclust
; /* Follow from the origin */
2702 if (clst
== 0) /* When no cluster is allocated, */
2703 clst
= create_chain(fp
->fs
, 0); /* Create a new cluster chain */
2704 } else { /* Middle or end of the file */
2707 clst
= clmt_clust(fp
, fp
->fptr
); /* Get cluster# from the CLMT */
2710 clst
= create_chain(fp
->fs
, fp
->clust
); /* Follow or stretch cluster chain on the FAT */
2712 if (clst
== 0) break; /* Could not allocate a new cluster (disk full) */
2713 if (clst
== 1) ABORT(fp
->fs
, FR_INT_ERR
);
2714 if (clst
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
2715 fp
->clust
= clst
; /* Update current cluster */
2716 if (fp
->sclust
== 0) fp
->sclust
= clst
; /* Set start cluster if the first write */
2719 if (fp
->fs
->winsect
== fp
->dsect
&& sync_window(fp
->fs
)) /* Write-back sector cache */
2720 ABORT(fp
->fs
, FR_DISK_ERR
);
2722 if (fp
->flag
& FA__DIRTY
) { /* Write-back sector cache */
2723 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
2724 ABORT(fp
->fs
, FR_DISK_ERR
);
2725 fp
->flag
&= ~FA__DIRTY
;
2728 sect
= clust2sect(fp
->fs
, fp
->clust
); /* Get current sector */
2729 if (!sect
) ABORT(fp
->fs
, FR_INT_ERR
);
2731 cc
= btw
/ SS(fp
->fs
); /* When remaining bytes >= sector size, */
2732 if (cc
) { /* Write maximum contiguous sectors directly */
2733 if (csect
+ cc
> fp
->fs
->csize
) /* Clip at cluster boundary */
2734 cc
= fp
->fs
->csize
- csect
;
2735 if (disk_write(fp
->fs
->drv
, wbuff
, sect
, cc
) != RES_OK
)
2736 ABORT(fp
->fs
, FR_DISK_ERR
);
2737 #if _FS_MINIMIZE <= 2
2739 if (fp
->fs
->winsect
- sect
< cc
) { /* Refill sector cache if it gets invalidated by the direct write */
2740 mem_cpy(fp
->fs
->win
, wbuff
+ ((fp
->fs
->winsect
- sect
) * SS(fp
->fs
)), SS(fp
->fs
));
2744 if (fp
->dsect
- sect
< cc
) { /* Refill sector cache if it gets invalidated by the direct write */
2745 mem_cpy(fp
->buf
, wbuff
+ ((fp
->dsect
- sect
) * SS(fp
->fs
)), SS(fp
->fs
));
2746 fp
->flag
&= ~FA__DIRTY
;
2750 wcnt
= SS(fp
->fs
) * cc
; /* Number of bytes transferred */
2754 if (fp
->fptr
>= fp
->fsize
) { /* Avoid silly cache filling at growing edge */
2755 if (sync_window(fp
->fs
)) ABORT(fp
->fs
, FR_DISK_ERR
);
2756 fp
->fs
->winsect
= sect
;
2759 if (fp
->dsect
!= sect
) { /* Fill sector cache with file data */
2760 if (fp
->fptr
< fp
->fsize
&&
2761 disk_read(fp
->fs
->drv
, fp
->buf
, sect
, 1) != RES_OK
)
2762 ABORT(fp
->fs
, FR_DISK_ERR
);
2767 wcnt
= SS(fp
->fs
) - ((UINT
)fp
->fptr
% SS(fp
->fs
));/* Put partial sector into file I/O buffer */
2768 if (wcnt
> btw
) wcnt
= btw
;
2770 if (move_window(fp
->fs
, fp
->dsect
) != FR_OK
) /* Move sector window */
2771 ABORT(fp
->fs
, FR_DISK_ERR
);
2772 mem_cpy(&fp
->fs
->win
[fp
->fptr
% SS(fp
->fs
)], wbuff
, wcnt
); /* Fit partial sector */
2775 mem_cpy(&fp
->buf
[fp
->fptr
% SS(fp
->fs
)], wbuff
, wcnt
); /* Fit partial sector */
2776 fp
->flag
|= FA__DIRTY
;
2780 if (fp
->fptr
> fp
->fsize
) fp
->fsize
= fp
->fptr
; /* Update file size if needed */
2781 fp
->flag
|= FA__WRITTEN
; /* Set file change flag */
2783 LEAVE_FF(fp
->fs
, FR_OK
);
2789 /*-----------------------------------------------------------------------*/
2790 /* Synchronize the File */
2791 /*-----------------------------------------------------------------------*/
2794 FIL
* fp
/* Pointer to the file object */
2802 res
= validate(fp
); /* Check validity of the object */
2804 if (fp
->flag
& FA__WRITTEN
) { /* Has the file been written? */
2805 /* Write-back dirty buffer */
2807 if (fp
->flag
& FA__DIRTY
) {
2808 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
2809 LEAVE_FF(fp
->fs
, FR_DISK_ERR
);
2810 fp
->flag
&= ~FA__DIRTY
;
2813 /* Update the directory entry */
2814 res
= move_window(fp
->fs
, fp
->dir_sect
);
2817 dir
[DIR_Attr
] |= AM_ARC
; /* Set archive bit */
2818 ST_DWORD(dir
+DIR_FileSize
, fp
->fsize
); /* Update file size */
2819 st_clust(dir
, fp
->sclust
); /* Update start cluster */
2820 tm
= GET_FATTIME(); /* Update updated time */
2821 ST_DWORD(dir
+DIR_WrtTime
, tm
);
2822 ST_WORD(dir
+DIR_LstAccDate
, 0);
2823 fp
->flag
&= ~FA__WRITTEN
;
2825 res
= sync_fs(fp
->fs
);
2830 LEAVE_FF(fp
->fs
, res
);
2833 #endif /* !_FS_READONLY */
2838 /*-----------------------------------------------------------------------*/
2840 /*-----------------------------------------------------------------------*/
2843 FIL
*fp
/* Pointer to the file object to be closed */
2850 res
= f_sync(fp
); /* Flush cached data */
2854 res
= validate(fp
); /* Lock volume */
2860 res
= dec_lock(fp
->lockid
); /* Decrement file open counter */
2863 fp
->fs
= 0; /* Invalidate file object */
2865 unlock_fs(fs
, FR_OK
); /* Unlock volume */
2875 /*-----------------------------------------------------------------------*/
2876 /* Change Current Directory or Current Drive, Get Current Directory */
2877 /*-----------------------------------------------------------------------*/
2882 const TCHAR
* path
/* Drive number */
2888 vol
= get_ldnumber(&path
);
2889 if (vol
< 0) return FR_INVALID_DRIVE
;
2891 CurrVol
= (BYTE
)vol
;
2899 const TCHAR
* path
/* Pointer to the directory path */
2907 /* Get logical drive number */
2908 res
= find_volume(&dj
.fs
, &path
, 0);
2911 res
= follow_path(&dj
, path
); /* Follow the path */
2913 if (res
== FR_OK
) { /* Follow completed */
2915 dj
.fs
->cdir
= dj
.sclust
; /* Start directory itself */
2917 if (dj
.dir
[DIR_Attr
] & AM_DIR
) /* Reached to the directory */
2918 dj
.fs
->cdir
= ld_clust(dj
.fs
, dj
.dir
);
2920 res
= FR_NO_PATH
; /* Reached but a file */
2923 if (res
== FR_NO_FILE
) res
= FR_NO_PATH
;
2926 LEAVE_FF(dj
.fs
, res
);
2932 TCHAR
* buff
, /* Pointer to the directory path */
2933 UINT len
/* Size of path */
2946 /* Get logical drive number */
2947 res
= find_volume(&dj
.fs
, (const TCHAR
**)&buff
, 0); /* Get current volume */
2950 i
= len
; /* Bottom of buffer (directory stack base) */
2951 dj
.sclust
= dj
.fs
->cdir
; /* Start to follow upper directory from current directory */
2952 while ((ccl
= dj
.sclust
) != 0) { /* Repeat while current directory is a sub-directory */
2953 res
= dir_sdi(&dj
, 1); /* Get parent directory */
2954 if (res
!= FR_OK
) break;
2955 res
= dir_read(&dj
, 0);
2956 if (res
!= FR_OK
) break;
2957 dj
.sclust
= ld_clust(dj
.fs
, dj
.dir
); /* Goto parent directory */
2958 res
= dir_sdi(&dj
, 0);
2959 if (res
!= FR_OK
) break;
2960 do { /* Find the entry links to the child directory */
2961 res
= dir_read(&dj
, 0);
2962 if (res
!= FR_OK
) break;
2963 if (ccl
== ld_clust(dj
.fs
, dj
.dir
)) break; /* Found the entry */
2964 res
= dir_next(&dj
, 0);
2965 } while (res
== FR_OK
);
2966 if (res
== FR_NO_FILE
) res
= FR_INT_ERR
;/* It cannot be 'not found'. */
2967 if (res
!= FR_OK
) break;
2972 get_fileinfo(&dj
, &fno
); /* Get the directory name and push it to the buffer */
2975 if (*buff
) tp
= buff
;
2977 for (n
= 0; tp
[n
]; n
++) ;
2979 res
= FR_NOT_ENOUGH_CORE
; break;
2981 while (n
) buff
[--i
] = tp
[--n
];
2987 *tp
++ = '0' + CurrVol
; /* Put drive number */
2990 if (i
== len
) { /* Root-directory */
2992 } else { /* Sub-directroy */
2993 do /* Add stacked path str */
3002 LEAVE_FF(dj
.fs
, res
);
3004 #endif /* _FS_RPATH >= 2 */
3005 #endif /* _FS_RPATH >= 1 */
3009 #if _FS_MINIMIZE <= 2
3010 /*-----------------------------------------------------------------------*/
3011 /* Seek File R/W Pointer */
3012 /*-----------------------------------------------------------------------*/
3015 FIL
* fp
, /* Pointer to the file object */
3016 DWORD ofs
/* File pointer from top of file */
3022 res
= validate(fp
); /* Check validity of the object */
3023 if (res
!= FR_OK
) LEAVE_FF(fp
->fs
, res
);
3024 if (fp
->err
) /* Check error */
3025 LEAVE_FF(fp
->fs
, (FRESULT
)fp
->err
);
3028 if (fp
->cltbl
) { /* Fast seek */
3029 DWORD cl
, pcl
, ncl
, tcl
, dsc
, tlen
, ulen
, *tbl
;
3031 if (ofs
== CREATE_LINKMAP
) { /* Create CLMT */
3033 tlen
= *tbl
++; ulen
= 2; /* Given table size and required table size */
3034 cl
= fp
->sclust
; /* Top of the chain */
3037 /* Get a fragment */
3038 tcl
= cl
; ncl
= 0; ulen
+= 2; /* Top, length and used items */
3041 cl
= get_fat(fp
->fs
, cl
);
3042 if (cl
<= 1) ABORT(fp
->fs
, FR_INT_ERR
);
3043 if (cl
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
3044 } while (cl
== pcl
+ 1);
3045 if (ulen
<= tlen
) { /* Store the length and top of the fragment */
3046 *tbl
++ = ncl
; *tbl
++ = tcl
;
3048 } while (cl
< fp
->fs
->n_fatent
); /* Repeat until end of chain */
3050 *fp
->cltbl
= ulen
; /* Number of items used */
3052 *tbl
= 0; /* Terminate table */
3054 res
= FR_NOT_ENOUGH_CORE
; /* Given table size is smaller than required */
3056 } else { /* Fast seek */
3057 if (ofs
> fp
->fsize
) /* Clip offset at the file size */
3059 fp
->fptr
= ofs
; /* Set file pointer */
3061 fp
->clust
= clmt_clust(fp
, ofs
- 1);
3062 dsc
= clust2sect(fp
->fs
, fp
->clust
);
3063 if (!dsc
) ABORT(fp
->fs
, FR_INT_ERR
);
3064 dsc
+= (ofs
- 1) / SS(fp
->fs
) & (fp
->fs
->csize
- 1);
3065 if (fp
->fptr
% SS(fp
->fs
) && dsc
!= fp
->dsect
) { /* Refill sector cache if needed */
3068 if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
3069 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
3070 ABORT(fp
->fs
, FR_DISK_ERR
);
3071 fp
->flag
&= ~FA__DIRTY
;
3074 if (disk_read(fp
->fs
->drv
, fp
->buf
, dsc
, 1) != RES_OK
) /* Load current sector */
3075 ABORT(fp
->fs
, FR_DISK_ERR
);
3086 DWORD clst
, bcs
, nsect
, ifptr
;
3088 if (ofs
> fp
->fsize
/* In read-only mode, clip offset with the file size */
3090 && !(fp
->flag
& FA_WRITE
)
3095 fp
->fptr
= nsect
= 0;
3097 bcs
= (DWORD
)fp
->fs
->csize
* SS(fp
->fs
); /* Cluster size (byte) */
3099 (ofs
- 1) / bcs
>= (ifptr
- 1) / bcs
) { /* When seek to same or following cluster, */
3100 fp
->fptr
= (ifptr
- 1) & ~(bcs
- 1); /* start from the current cluster */
3103 } else { /* When seek to back cluster, */
3104 clst
= fp
->sclust
; /* start from the first cluster */
3106 if (clst
== 0) { /* If no cluster chain, create a new chain */
3107 clst
= create_chain(fp
->fs
, 0);
3108 if (clst
== 1) ABORT(fp
->fs
, FR_INT_ERR
);
3109 if (clst
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
3116 while (ofs
> bcs
) { /* Cluster following loop */
3118 if (fp
->flag
& FA_WRITE
) { /* Check if in write mode or not */
3119 clst
= create_chain(fp
->fs
, clst
); /* Force stretch if in write mode */
3120 if (clst
== 0) { /* When disk gets full, clip file size */
3125 clst
= get_fat(fp
->fs
, clst
); /* Follow cluster chain if not in write mode */
3126 if (clst
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
3127 if (clst
<= 1 || clst
>= fp
->fs
->n_fatent
) ABORT(fp
->fs
, FR_INT_ERR
);
3133 if (ofs
% SS(fp
->fs
)) {
3134 nsect
= clust2sect(fp
->fs
, clst
); /* Current sector */
3135 if (!nsect
) ABORT(fp
->fs
, FR_INT_ERR
);
3136 nsect
+= ofs
/ SS(fp
->fs
);
3140 if (fp
->fptr
% SS(fp
->fs
) && nsect
!= fp
->dsect
) { /* Fill sector cache if needed */
3143 if (fp
->flag
& FA__DIRTY
) { /* Write-back dirty sector cache */
3144 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
3145 ABORT(fp
->fs
, FR_DISK_ERR
);
3146 fp
->flag
&= ~FA__DIRTY
;
3149 if (disk_read(fp
->fs
->drv
, fp
->buf
, nsect
, 1) != RES_OK
) /* Fill sector cache */
3150 ABORT(fp
->fs
, FR_DISK_ERR
);
3155 if (fp
->fptr
> fp
->fsize
) { /* Set file change flag if the file size is extended */
3156 fp
->fsize
= fp
->fptr
;
3157 fp
->flag
|= FA__WRITTEN
;
3162 LEAVE_FF(fp
->fs
, res
);
3167 #if _FS_MINIMIZE <= 1
3168 /*-----------------------------------------------------------------------*/
3169 /* Create a Directory Object */
3170 /*-----------------------------------------------------------------------*/
3173 DIR* dp
, /* Pointer to directory object to create */
3174 const TCHAR
* path
/* Pointer to the directory path */
3182 if (!dp
) return FR_INVALID_OBJECT
;
3184 /* Get logical drive number */
3185 res
= find_volume(&fs
, &path
, 0);
3189 res
= follow_path(dp
, path
); /* Follow the path to the directory */
3191 if (res
== FR_OK
) { /* Follow completed */
3192 if (dp
->dir
) { /* It is not the origin directory itself */
3193 if (dp
->dir
[DIR_Attr
] & AM_DIR
) /* The object is a sub directory */
3194 dp
->sclust
= ld_clust(fs
, dp
->dir
);
3195 else /* The object is a file */
3200 res
= dir_sdi(dp
, 0); /* Rewind directory */
3204 dp
->lockid
= inc_lock(dp
, 0); /* Lock the sub directory */
3206 res
= FR_TOO_MANY_OPEN_FILES
;
3208 dp
->lockid
= 0; /* Root directory need not to be locked */
3214 if (res
== FR_NO_FILE
) res
= FR_NO_PATH
;
3216 if (res
!= FR_OK
) dp
->fs
= 0; /* Invalidate the directory object if function faild */
3224 /*-----------------------------------------------------------------------*/
3225 /* Close Directory */
3226 /*-----------------------------------------------------------------------*/
3228 FRESULT
f_closedir (
3229 DIR *dp
/* Pointer to the directory object to be closed */
3241 if (dp
->lockid
) /* Decrement sub-directory open counter */
3242 res
= dec_lock(dp
->lockid
);
3245 dp
->fs
= 0; /* Invalidate directory object */
3247 unlock_fs(fs
, FR_OK
); /* Unlock volume */
3256 /*-----------------------------------------------------------------------*/
3257 /* Read Directory Entries in Sequence */
3258 /*-----------------------------------------------------------------------*/
3261 DIR* dp
, /* Pointer to the open directory object */
3262 FILINFO
* fno
/* Pointer to file information to return */
3269 res
= validate(dp
); /* Check validity of the object */
3272 res
= dir_sdi(dp
, 0); /* Rewind the directory object */
3275 res
= dir_read(dp
, 0); /* Read an item */
3276 if (res
== FR_NO_FILE
) { /* Reached end of directory */
3280 if (res
== FR_OK
) { /* A valid entry is found */
3281 get_fileinfo(dp
, fno
); /* Get the object information */
3282 res
= dir_next(dp
, 0); /* Increment index for next */
3283 if (res
== FR_NO_FILE
) {
3292 LEAVE_FF(dp
->fs
, res
);
3297 #if _FS_MINIMIZE == 0
3298 /*-----------------------------------------------------------------------*/
3299 /* Get File Status */
3300 /*-----------------------------------------------------------------------*/
3303 const TCHAR
* path
, /* Pointer to the file path */
3304 FILINFO
* fno
/* Pointer to file information to return */
3312 /* Get logical drive number */
3313 res
= find_volume(&dj
.fs
, &path
, 0);
3316 res
= follow_path(&dj
, path
); /* Follow the file path */
3317 if (res
== FR_OK
) { /* Follow completed */
3318 if (dj
.dir
) { /* Found an object */
3319 if (fno
) get_fileinfo(&dj
, fno
);
3320 } else { /* It is root directory */
3321 res
= FR_INVALID_NAME
;
3327 LEAVE_FF(dj
.fs
, res
);
3333 /*-----------------------------------------------------------------------*/
3334 /* Get Number of Free Clusters */
3335 /*-----------------------------------------------------------------------*/
3338 const TCHAR
* path
, /* Path name of the logical drive number */
3339 DWORD
* nclst
, /* Pointer to a variable to return number of free clusters */
3340 FATFS
** fatfs
/* Pointer to return pointer to corresponding file system object */
3345 DWORD n
, clst
, sect
, stat
;
3350 /* Get logical drive number */
3351 res
= find_volume(fatfs
, &path
, 0);
3354 /* If free_clust is valid, return it without full cluster scan */
3355 if (fs
->free_clust
<= fs
->n_fatent
- 2) {
3356 *nclst
= fs
->free_clust
;
3358 /* Get number of free clusters */
3361 if (fat
== FS_FAT12
) {
3364 stat
= get_fat(fs
, clst
);
3365 if (stat
== 0xFFFFFFFF) { res
= FR_DISK_ERR
; break; }
3366 if (stat
== 1) { res
= FR_INT_ERR
; break; }
3368 } while (++clst
< fs
->n_fatent
);
3370 clst
= fs
->n_fatent
;
3375 res
= move_window(fs
, sect
++);
3376 if (res
!= FR_OK
) break;
3380 if (fat
== FS_FAT16
) {
3381 if (LD_WORD(p
) == 0) n
++;
3384 if ((LD_DWORD(p
) & 0x0FFFFFFF) == 0) n
++;
3400 /*-----------------------------------------------------------------------*/
3402 /*-----------------------------------------------------------------------*/
3404 FRESULT
f_truncate (
3405 FIL
* fp
/* Pointer to the file object */
3412 res
= validate(fp
); /* Check validity of the object */
3414 if (fp
->err
) { /* Check error */
3415 res
= (FRESULT
)fp
->err
;
3417 if (!(fp
->flag
& FA_WRITE
)) /* Check access mode */
3422 if (fp
->fsize
> fp
->fptr
) {
3423 fp
->fsize
= fp
->fptr
; /* Set file size to current R/W point */
3424 fp
->flag
|= FA__WRITTEN
;
3425 if (fp
->fptr
== 0) { /* When set file size to zero, remove entire cluster chain */
3426 res
= remove_chain(fp
->fs
, fp
->sclust
);
3428 } else { /* When truncate a part of the file, remove remaining clusters */
3429 ncl
= get_fat(fp
->fs
, fp
->clust
);
3431 if (ncl
== 0xFFFFFFFF) res
= FR_DISK_ERR
;
3432 if (ncl
== 1) res
= FR_INT_ERR
;
3433 if (res
== FR_OK
&& ncl
< fp
->fs
->n_fatent
) {
3434 res
= put_fat(fp
->fs
, fp
->clust
, 0x0FFFFFFF);
3435 if (res
== FR_OK
) res
= remove_chain(fp
->fs
, ncl
);
3439 if (res
== FR_OK
&& (fp
->flag
& FA__DIRTY
)) {
3440 if (disk_write(fp
->fs
->drv
, fp
->buf
, fp
->dsect
, 1) != RES_OK
)
3443 fp
->flag
&= ~FA__DIRTY
;
3447 if (res
!= FR_OK
) fp
->err
= (FRESULT
)res
;
3450 LEAVE_FF(fp
->fs
, res
);
3456 /*-----------------------------------------------------------------------*/
3457 /* Delete a File or Directory */
3458 /*-----------------------------------------------------------------------*/
3461 const TCHAR
* path
/* Pointer to the file or directory path */
3471 /* Get logical drive number */
3472 res
= find_volume(&dj
.fs
, &path
, 1);
3475 res
= follow_path(&dj
, path
); /* Follow the file path */
3476 if (_FS_RPATH
&& res
== FR_OK
&& (dj
.fn
[NSFLAG
] & NS_DOT
))
3477 res
= FR_INVALID_NAME
; /* Cannot remove dot entry */
3479 if (res
== FR_OK
) res
= chk_lock(&dj
, 2); /* Cannot remove open object */
3481 if (res
== FR_OK
) { /* The object is accessible */
3484 res
= FR_INVALID_NAME
; /* Cannot remove the origin directory */
3486 if (dir
[DIR_Attr
] & AM_RDO
)
3487 res
= FR_DENIED
; /* Cannot remove R/O object */
3489 if (res
== FR_OK
&& (dir
[DIR_Attr
] & AM_DIR
)) { /* Is it a sub-dir? */
3490 dclst
= ld_clust(dj
.fs
, dir
);
3493 } else { /* Make sure the sub-directory is empty */
3494 mem_cpy(&sdj
, &dj
, sizeof (DIR));
3496 res
= dir_sdi(&sdj
, 2); /* Exclude dot entries */
3498 res
= dir_read(&sdj
, 0); /* Read an item */
3499 if (res
== FR_OK
/* Not empty directory */
3501 || dclst
== dj
.fs
->cdir
/* or current directory */
3504 if (res
== FR_NO_FILE
) res
= FR_OK
; /* It is empty */
3509 res
= dir_remove(&dj
); /* Remove the directory entry */
3510 if (res
== FR_OK
&& dclst
) /* Remove the cluster chain if exist */
3511 res
= remove_chain(dj
.fs
, dclst
);
3512 if (res
== FR_OK
) res
= sync_fs(dj
.fs
);
3518 LEAVE_FF(dj
.fs
, res
);
3524 /*-----------------------------------------------------------------------*/
3525 /* Create a Directory */
3526 /*-----------------------------------------------------------------------*/
3529 const TCHAR
* path
/* Pointer to the directory path */
3535 DWORD dsc
, dcl
, pcl
, tm
= GET_FATTIME();
3539 /* Get logical drive number */
3540 res
= find_volume(&dj
.fs
, &path
, 1);
3543 res
= follow_path(&dj
, path
); /* Follow the file path */
3544 if (res
== FR_OK
) res
= FR_EXIST
; /* Any object with same name is already existing */
3545 if (_FS_RPATH
&& res
== FR_NO_FILE
&& (dj
.fn
[NSFLAG
] & NS_DOT
))
3546 res
= FR_INVALID_NAME
;
3547 if (res
== FR_NO_FILE
) { /* Can create a new directory */
3548 dcl
= create_chain(dj
.fs
, 0); /* Allocate a cluster for the new directory table */
3550 if (dcl
== 0) res
= FR_DENIED
; /* No space to allocate a new cluster */
3551 if (dcl
== 1) res
= FR_INT_ERR
;
3552 if (dcl
== 0xFFFFFFFF) res
= FR_DISK_ERR
;
3553 if (res
== FR_OK
) /* Flush FAT */
3554 res
= sync_window(dj
.fs
);
3555 if (res
== FR_OK
) { /* Initialize the new directory table */
3556 dsc
= clust2sect(dj
.fs
, dcl
);
3558 mem_set(dir
, 0, SS(dj
.fs
));
3559 mem_set(dir
+DIR_Name
, ' ', 11); /* Create "." entry */
3560 dir
[DIR_Name
] = '.';
3561 dir
[DIR_Attr
] = AM_DIR
;
3562 ST_DWORD(dir
+DIR_WrtTime
, tm
);
3564 mem_cpy(dir
+SZ_DIR
, dir
, SZ_DIR
); /* Create ".." entry */
3565 dir
[SZ_DIR
+1] = '.'; pcl
= dj
.sclust
;
3566 if (dj
.fs
->fs_type
== FS_FAT32
&& pcl
== dj
.fs
->dirbase
)
3568 st_clust(dir
+SZ_DIR
, pcl
);
3569 for (n
= dj
.fs
->csize
; n
; n
--) { /* Write dot entries and clear following sectors */
3570 dj
.fs
->winsect
= dsc
++;
3572 res
= sync_window(dj
.fs
);
3573 if (res
!= FR_OK
) break;
3574 mem_set(dir
, 0, SS(dj
.fs
));
3577 if (res
== FR_OK
) res
= dir_register(&dj
); /* Register the object to the directoy */
3579 remove_chain(dj
.fs
, dcl
); /* Could not register, remove cluster chain */
3582 dir
[DIR_Attr
] = AM_DIR
; /* Attribute */
3583 ST_DWORD(dir
+DIR_WrtTime
, tm
); /* Created time */
3584 st_clust(dir
, dcl
); /* Table start cluster */
3586 res
= sync_fs(dj
.fs
);
3592 LEAVE_FF(dj
.fs
, res
);
3598 /*-----------------------------------------------------------------------*/
3599 /* Change Attribute */
3600 /*-----------------------------------------------------------------------*/
3603 const TCHAR
* path
, /* Pointer to the file path */
3604 BYTE value
, /* Attribute bits */
3605 BYTE mask
/* Attribute mask to change */
3614 /* Get logical drive number */
3615 res
= find_volume(&dj
.fs
, &path
, 1);
3618 res
= follow_path(&dj
, path
); /* Follow the file path */
3620 if (_FS_RPATH
&& res
== FR_OK
&& (dj
.fn
[NSFLAG
] & NS_DOT
))
3621 res
= FR_INVALID_NAME
;
3624 if (!dir
) { /* Is it a root directory? */
3625 res
= FR_INVALID_NAME
;
3626 } else { /* File or sub directory */
3627 mask
&= AM_RDO
|AM_HID
|AM_SYS
|AM_ARC
; /* Valid attribute mask */
3628 dir
[DIR_Attr
] = (value
& mask
) | (dir
[DIR_Attr
] & (BYTE
)~mask
); /* Apply attribute change */
3630 res
= sync_fs(dj
.fs
);
3635 LEAVE_FF(dj
.fs
, res
);
3641 /*-----------------------------------------------------------------------*/
3642 /* Rename File/Directory */
3643 /*-----------------------------------------------------------------------*/
3646 const TCHAR
* path_old
, /* Pointer to the object to be renamed */
3647 const TCHAR
* path_new
/* Pointer to the new name */
3657 /* Get logical drive number of the source object */
3658 res
= find_volume(&djo
.fs
, &path_old
, 1);
3662 res
= follow_path(&djo
, path_old
); /* Check old object */
3663 if (_FS_RPATH
&& res
== FR_OK
&& (djo
.fn
[NSFLAG
] & NS_DOT
))
3664 res
= FR_INVALID_NAME
;
3666 if (res
== FR_OK
) res
= chk_lock(&djo
, 2);
3668 if (res
== FR_OK
) { /* Old object is found */
3669 if (!djo
.dir
) { /* Is root dir? */
3672 mem_cpy(buf
, djo
.dir
+DIR_Attr
, 21); /* Save the object information except name */
3673 mem_cpy(&djn
, &djo
, sizeof (DIR)); /* Duplicate the directory object */
3674 if (get_ldnumber(&path_new
) >= 0) /* Snip drive number off and ignore it */
3675 res
= follow_path(&djn
, path_new
); /* and make sure if new object name is not conflicting */
3677 res
= FR_INVALID_DRIVE
;
3678 if (res
== FR_OK
) res
= FR_EXIST
; /* The new object name is already existing */
3679 if (res
== FR_NO_FILE
) { /* It is a valid path and no name collision */
3680 /* Start of critical section that any interruption can cause a cross-link */
3681 res
= dir_register(&djn
); /* Register the new entry */
3683 dir
= djn
.dir
; /* Copy object information except name */
3684 mem_cpy(dir
+13, buf
+2, 19);
3685 dir
[DIR_Attr
] = buf
[0] | AM_ARC
;
3687 if ((dir
[DIR_Attr
] & AM_DIR
) && djo
.sclust
!= djn
.sclust
) { /* Update .. entry in the directory if needed */
3688 dw
= clust2sect(djo
.fs
, ld_clust(djo
.fs
, dir
));
3692 res
= move_window(djo
.fs
, dw
);
3693 dir
= djo
.fs
->win
+SZ_DIR
; /* .. entry */
3694 if (res
== FR_OK
&& dir
[1] == '.') {
3695 st_clust(dir
, djn
.sclust
);
3701 res
= dir_remove(&djo
); /* Remove old entry */
3703 res
= sync_fs(djo
.fs
);
3706 /* End of critical section */
3713 LEAVE_FF(djo
.fs
, res
);
3719 /*-----------------------------------------------------------------------*/
3720 /* Change Timestamp */
3721 /*-----------------------------------------------------------------------*/
3724 const TCHAR
* path
, /* Pointer to the file/directory name */
3725 const FILINFO
* fno
/* Pointer to the time stamp to be set */
3734 /* Get logical drive number */
3735 res
= find_volume(&dj
.fs
, &path
, 1);
3738 res
= follow_path(&dj
, path
); /* Follow the file path */
3740 if (_FS_RPATH
&& res
== FR_OK
&& (dj
.fn
[NSFLAG
] & NS_DOT
))
3741 res
= FR_INVALID_NAME
;
3744 if (!dir
) { /* Root directory */
3745 res
= FR_INVALID_NAME
;
3746 } else { /* File or sub-directory */
3747 ST_WORD(dir
+DIR_WrtTime
, fno
->ftime
);
3748 ST_WORD(dir
+DIR_WrtDate
, fno
->fdate
);
3750 res
= sync_fs(dj
.fs
);
3755 LEAVE_FF(dj
.fs
, res
);
3758 #endif /* !_FS_READONLY */
3759 #endif /* _FS_MINIMIZE == 0 */
3760 #endif /* _FS_MINIMIZE <= 1 */
3761 #endif /* _FS_MINIMIZE <= 2 */
3766 /*-----------------------------------------------------------------------*/
3767 /* Get volume label */
3768 /*-----------------------------------------------------------------------*/
3770 FRESULT
f_getlabel (
3771 const TCHAR
* path
, /* Path name of the logical drive number */
3772 TCHAR
* label
, /* Pointer to a buffer to return the volume label */
3773 DWORD
* vsn
/* Pointer to a variable to return the volume serial number */
3781 /* Get logical drive number */
3782 res
= find_volume(&dj
.fs
, &path
, 0);
3784 /* Get volume label */
3785 if (res
== FR_OK
&& label
) {
3786 dj
.sclust
= 0; /* Open root directory */
3787 res
= dir_sdi(&dj
, 0);
3789 res
= dir_read(&dj
, 1); /* Get an entry with AM_VOL */
3790 if (res
== FR_OK
) { /* A volume label is exist */
3791 #if _USE_LFN && _LFN_UNICODE
3795 w
= (i
< 11) ? dj
.dir
[i
++] : ' ';
3796 if (IsDBCS1(w
) && i
< 11 && IsDBCS2(dj
.dir
[i
]))
3797 w
= w
<< 8 | dj
.dir
[i
++];
3798 label
[j
++] = ff_convert(w
, 1); /* OEM -> Unicode */
3801 mem_cpy(label
, dj
.dir
, 11);
3807 } while (label
[--j
] == ' ');
3809 if (res
== FR_NO_FILE
) { /* No label, return nul string */
3816 /* Get volume serial number */
3817 if (res
== FR_OK
&& vsn
) {
3818 res
= move_window(dj
.fs
, dj
.fs
->volbase
);
3820 i
= dj
.fs
->fs_type
== FS_FAT32
? BS_VolID32
: BS_VolID
;
3821 *vsn
= LD_DWORD(&dj
.fs
->win
[i
]);
3825 LEAVE_FF(dj
.fs
, res
);
3831 /*-----------------------------------------------------------------------*/
3832 /* Set volume label */
3833 /*-----------------------------------------------------------------------*/
3835 FRESULT
f_setlabel (
3836 const TCHAR
* label
/* Pointer to the volume label to set */
3847 /* Get logical drive number */
3848 res
= find_volume(&dj
.fs
, &label
, 1);
3849 if (res
) LEAVE_FF(dj
.fs
, res
);
3851 /* Create a volume label in directory form */
3853 for (sl
= 0; label
[sl
]; sl
++) ; /* Get name length */
3854 for ( ; sl
&& label
[sl
-1] == ' '; sl
--) ; /* Remove trailing spaces */
3855 if (sl
) { /* Create volume label in directory form */
3858 #if _USE_LFN && _LFN_UNICODE
3859 w
= ff_convert(ff_wtoupper(label
[i
++]), 0);
3861 w
= (BYTE
)label
[i
++];
3863 w
= (j
< 10 && i
< sl
&& IsDBCS2(label
[i
])) ? w
<< 8 | (BYTE
)label
[i
++] : 0;
3865 w
= ff_convert(ff_wtoupper(ff_convert(w
, 1)), 0);
3867 if (IsLower(w
)) w
-= 0x20; /* To upper ASCII characters */
3869 if (w
>= 0x80) w
= ExCvt
[w
- 0x80]; /* To upper extended characters (SBCS cfg) */
3871 if (!_DF1S
&& w
>= 0x80) w
= 0; /* Reject extended characters (ASCII cfg) */
3875 if (!w
|| chk_chr("\"*+,.:;<=>\?[]|\x7F", w
) || j
>= (UINT
)((w
>= 0x100) ? 10 : 11)) /* Reject invalid characters for volume label */
3876 LEAVE_FF(dj
.fs
, FR_INVALID_NAME
);
3877 if (w
>= 0x100) vn
[j
++] = (BYTE
)(w
>> 8);
3880 while (j
< 11) vn
[j
++] = ' ';
3883 /* Set volume label */
3884 dj
.sclust
= 0; /* Open root directory */
3885 res
= dir_sdi(&dj
, 0);
3887 res
= dir_read(&dj
, 1); /* Get an entry with AM_VOL */
3888 if (res
== FR_OK
) { /* A volume label is found */
3890 mem_cpy(dj
.dir
, vn
, 11); /* Change the volume label name */
3892 ST_DWORD(dj
.dir
+DIR_WrtTime
, tm
);
3894 dj
.dir
[0] = DDE
; /* Remove the volume label */
3897 res
= sync_fs(dj
.fs
);
3898 } else { /* No volume label is found or error */
3899 if (res
== FR_NO_FILE
) {
3901 if (vn
[0]) { /* Create volume label as new */
3902 res
= dir_alloc(&dj
, 1); /* Allocate an entry for volume label */
3904 mem_set(dj
.dir
, 0, SZ_DIR
); /* Set volume label */
3905 mem_cpy(dj
.dir
, vn
, 11);
3906 dj
.dir
[DIR_Attr
] = AM_VOL
;
3908 ST_DWORD(dj
.dir
+DIR_WrtTime
, tm
);
3910 res
= sync_fs(dj
.fs
);
3917 LEAVE_FF(dj
.fs
, res
);
3920 #endif /* !_FS_READONLY */
3921 #endif /* _USE_LABEL */
3925 /*-----------------------------------------------------------------------*/
3926 /* Forward data to the stream directly (available on only tiny cfg) */
3927 /*-----------------------------------------------------------------------*/
3928 #if _USE_FORWARD && _FS_TINY
3931 FIL
* fp
, /* Pointer to the file object */
3932 UINT (*func
)(const BYTE
*,UINT
), /* Pointer to the streaming function */
3933 UINT btf
, /* Number of bytes to forward */
3934 UINT
* bf
/* Pointer to number of bytes forwarded */
3938 DWORD remain
, clst
, sect
;
3943 *bf
= 0; /* Clear transfer byte counter */
3945 res
= validate(fp
); /* Check validity of the object */
3946 if (res
!= FR_OK
) LEAVE_FF(fp
->fs
, res
);
3947 if (fp
->err
) /* Check error */
3948 LEAVE_FF(fp
->fs
, (FRESULT
)fp
->err
);
3949 if (!(fp
->flag
& FA_READ
)) /* Check access mode */
3950 LEAVE_FF(fp
->fs
, FR_DENIED
);
3952 remain
= fp
->fsize
- fp
->fptr
;
3953 if (btf
> remain
) btf
= (UINT
)remain
; /* Truncate btf by remaining bytes */
3955 for ( ; btf
&& (*func
)(0, 0); /* Repeat until all data transferred or stream becomes busy */
3956 fp
->fptr
+= rcnt
, *bf
+= rcnt
, btf
-= rcnt
) {
3957 csect
= (BYTE
)(fp
->fptr
/ SS(fp
->fs
) & (fp
->fs
->csize
- 1)); /* Sector offset in the cluster */
3958 if ((fp
->fptr
% SS(fp
->fs
)) == 0) { /* On the sector boundary? */
3959 if (!csect
) { /* On the cluster boundary? */
3960 clst
= (fp
->fptr
== 0) ? /* On the top of the file? */
3961 fp
->sclust
: get_fat(fp
->fs
, fp
->clust
);
3962 if (clst
<= 1) ABORT(fp
->fs
, FR_INT_ERR
);
3963 if (clst
== 0xFFFFFFFF) ABORT(fp
->fs
, FR_DISK_ERR
);
3964 fp
->clust
= clst
; /* Update current cluster */
3967 sect
= clust2sect(fp
->fs
, fp
->clust
); /* Get current data sector */
3968 if (!sect
) ABORT(fp
->fs
, FR_INT_ERR
);
3970 if (move_window(fp
->fs
, sect
) != FR_OK
) /* Move sector window */
3971 ABORT(fp
->fs
, FR_DISK_ERR
);
3973 rcnt
= SS(fp
->fs
) - (WORD
)(fp
->fptr
% SS(fp
->fs
)); /* Forward data from sector window */
3974 if (rcnt
> btf
) rcnt
= btf
;
3975 rcnt
= (*func
)(&fp
->fs
->win
[(WORD
)fp
->fptr
% SS(fp
->fs
)], rcnt
);
3976 if (!rcnt
) ABORT(fp
->fs
, FR_INT_ERR
);
3979 LEAVE_FF(fp
->fs
, FR_OK
);
3981 #endif /* _USE_FORWARD */
3985 #if _USE_MKFS && !_FS_READONLY
3986 /*-----------------------------------------------------------------------*/
3987 /* Create File System on the Drive */
3988 /*-----------------------------------------------------------------------*/
3989 #define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */
3990 #define N_FATS 1 /* Number of FATs (1 or 2) */
3994 const TCHAR
* path
, /* Logical drive number */
3995 BYTE sfd
, /* Partitioning rule 0:FDISK, 1:SFD */
3996 UINT au
/* Size of allocation unit in unit of byte or sector */
3999 static const WORD vst
[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
4000 static const WORD cst
[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
4002 BYTE fmt
, md
, sys
, *tbl
, pdrv
, part
;
4003 DWORD n_clst
, vs
, n
, wsect
;
4005 DWORD b_vol
, b_fat
, b_dir
, b_data
; /* LBA */
4006 DWORD n_vol
, n_rsv
, n_fat
, n_dir
; /* Size */
4011 /* Check mounted drive and clear work area */
4012 if (sfd
> 1) return FR_INVALID_PARAMETER
;
4013 vol
= get_ldnumber(&path
);
4014 if (vol
< 0) return FR_INVALID_DRIVE
;
4016 if (!fs
) return FR_NOT_ENABLED
;
4018 pdrv
= LD2PD(vol
); /* Physical drive */
4019 part
= LD2PT(vol
); /* Partition (0:auto detect, 1-4:get from partition table)*/
4021 /* Get disk statics */
4022 stat
= disk_initialize(pdrv
);
4023 if (stat
& STA_NOINIT
) return FR_NOT_READY
;
4024 if (stat
& STA_PROTECT
) return FR_WRITE_PROTECTED
;
4025 #if _MAX_SS != _MIN_SS /* Get disk sector size */
4026 if (disk_ioctl(pdrv
, GET_SECTOR_SIZE
, &SS(fs
)) != RES_OK
|| SS(fs
) > _MAX_SS
|| SS(fs
) < _MIN_SS
)
4029 if (_MULTI_PARTITION
&& part
) {
4030 /* Get partition information from partition table in the MBR */
4031 if (disk_read(pdrv
, fs
->win
, 0, 1) != RES_OK
) return FR_DISK_ERR
;
4032 if (LD_WORD(fs
->win
+BS_55AA
) != 0xAA55) return FR_MKFS_ABORTED
;
4033 tbl
= &fs
->win
[MBR_Table
+ (part
- 1) * SZ_PTE
];
4034 if (!tbl
[4]) return FR_MKFS_ABORTED
; /* No partition? */
4035 b_vol
= LD_DWORD(tbl
+8); /* Volume start sector */
4036 n_vol
= LD_DWORD(tbl
+12); /* Volume size */
4038 /* Create a partition in this function */
4039 if (disk_ioctl(pdrv
, GET_SECTOR_COUNT
, &n_vol
) != RES_OK
|| n_vol
< 128)
4041 b_vol
= (sfd
) ? 0 : 63; /* Volume start sector */
4042 n_vol
-= b_vol
; /* Volume size */
4045 if (au
& (au
- 1)) au
= 0;
4046 if (!au
) { /* AU auto selection */
4047 vs
= n_vol
/ (2000 / (SS(fs
) / 512));
4048 for (i
= 0; vs
< vst
[i
]; i
++) ;
4051 if (au
>= _MIN_SS
) au
/= SS(fs
); /* Number of sectors per cluster */
4053 if (au
> 128) au
= 128;
4055 /* Pre-compute number of clusters and FAT sub-type */
4056 n_clst
= n_vol
/ au
;
4058 if (n_clst
>= MIN_FAT16
) fmt
= FS_FAT16
;
4059 if (n_clst
>= MIN_FAT32
) fmt
= FS_FAT32
;
4061 /* Determine offset and size of FAT structure */
4062 if (fmt
== FS_FAT32
) {
4063 n_fat
= ((n_clst
* 4) + 8 + SS(fs
) - 1) / SS(fs
);
4067 n_fat
= (fmt
== FS_FAT12
) ? (n_clst
* 3 + 1) / 2 + 3 : (n_clst
* 2) + 4;
4068 n_fat
= (n_fat
+ SS(fs
) - 1) / SS(fs
);
4070 n_dir
= (DWORD
)N_ROOTDIR
* SZ_DIR
/ SS(fs
);
4072 b_fat
= b_vol
+ n_rsv
; /* FAT area start sector */
4073 b_dir
= b_fat
+ n_fat
* N_FATS
; /* Directory area start sector */
4074 b_data
= b_dir
+ n_dir
; /* Data area start sector */
4075 if (n_vol
< b_data
+ au
- b_vol
) return FR_MKFS_ABORTED
; /* Too small volume */
4077 /* Align data start sector to erase block boundary (for flash memory media) */
4078 if (disk_ioctl(pdrv
, GET_BLOCK_SIZE
, &n
) != RES_OK
|| !n
|| n
> 32768) n
= 1;
4079 n
= (b_data
+ n
- 1) & ~(n
- 1); /* Next nearest erase block from current data start */
4080 n
= (n
- b_data
) / N_FATS
;
4081 if (fmt
== FS_FAT32
) { /* FAT32: Move FAT offset */
4084 } else { /* FAT12/16: Expand FAT size */
4088 /* Determine number of clusters and final check of validity of the FAT sub-type */
4089 n_clst
= (n_vol
- n_rsv
- n_fat
* N_FATS
- n_dir
) / au
;
4090 if ( (fmt
== FS_FAT16
&& n_clst
< MIN_FAT16
)
4091 || (fmt
== FS_FAT32
&& n_clst
< MIN_FAT32
))
4092 return FR_MKFS_ABORTED
;
4094 /* Determine system ID in the partition table */
4095 if (fmt
== FS_FAT32
) {
4096 sys
= 0x0C; /* FAT32X */
4098 if (fmt
== FS_FAT12
&& n_vol
< 0x10000) {
4099 sys
= 0x01; /* FAT12(<65536) */
4101 sys
= (n_vol
< 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */
4105 if (_MULTI_PARTITION
&& part
) {
4106 /* Update system ID in the partition table */
4107 tbl
= &fs
->win
[MBR_Table
+ (part
- 1) * SZ_PTE
];
4109 if (disk_write(pdrv
, fs
->win
, 0, 1) != RES_OK
) /* Write it to teh MBR */
4113 if (sfd
) { /* No partition table (SFD) */
4115 } else { /* Create partition table (FDISK) */
4116 mem_set(fs
->win
, 0, SS(fs
));
4117 tbl
= fs
->win
+MBR_Table
; /* Create partition table for single partition in the drive */
4118 tbl
[1] = 1; /* Partition start head */
4119 tbl
[2] = 1; /* Partition start sector */
4120 tbl
[3] = 0; /* Partition start cylinder */
4121 tbl
[4] = sys
; /* System type */
4122 tbl
[5] = 254; /* Partition end head */
4123 n
= (b_vol
+ n_vol
) / 63 / 255;
4124 tbl
[6] = (BYTE
)(n
>> 2 | 63); /* Partition end sector */
4125 tbl
[7] = (BYTE
)n
; /* End cylinder */
4126 ST_DWORD(tbl
+8, 63); /* Partition start in LBA */
4127 ST_DWORD(tbl
+12, n_vol
); /* Partition size in LBA */
4128 ST_WORD(fs
->win
+BS_55AA
, 0xAA55); /* MBR signature */
4129 if (disk_write(pdrv
, fs
->win
, 0, 1) != RES_OK
) /* Write it to the MBR */
4135 /* Create BPB in the VBR */
4136 tbl
= fs
->win
; /* Clear sector */
4137 mem_set(tbl
, 0, SS(fs
));
4138 mem_cpy(tbl
, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
4139 i
= SS(fs
); /* Sector size */
4140 ST_WORD(tbl
+BPB_BytsPerSec
, i
);
4141 tbl
[BPB_SecPerClus
] = (BYTE
)au
; /* Sectors per cluster */
4142 ST_WORD(tbl
+BPB_RsvdSecCnt
, n_rsv
); /* Reserved sectors */
4143 tbl
[BPB_NumFATs
] = N_FATS
; /* Number of FATs */
4144 i
= (fmt
== FS_FAT32
) ? 0 : N_ROOTDIR
; /* Number of root directory entries */
4145 ST_WORD(tbl
+BPB_RootEntCnt
, i
);
4146 if (n_vol
< 0x10000) { /* Number of total sectors */
4147 ST_WORD(tbl
+BPB_TotSec16
, n_vol
);
4149 ST_DWORD(tbl
+BPB_TotSec32
, n_vol
);
4151 tbl
[BPB_Media
] = md
; /* Media descriptor */
4152 ST_WORD(tbl
+BPB_SecPerTrk
, 63); /* Number of sectors per track */
4153 ST_WORD(tbl
+BPB_NumHeads
, 255); /* Number of heads */
4154 ST_DWORD(tbl
+BPB_HiddSec
, b_vol
); /* Hidden sectors */
4155 n
= GET_FATTIME(); /* Use current time as VSN */
4156 if (fmt
== FS_FAT32
) {
4157 ST_DWORD(tbl
+BS_VolID32
, n
); /* VSN */
4158 ST_DWORD(tbl
+BPB_FATSz32
, n_fat
); /* Number of sectors per FAT */
4159 ST_DWORD(tbl
+BPB_RootClus
, 2); /* Root directory start cluster (2) */
4160 ST_WORD(tbl
+BPB_FSInfo
, 1); /* FSINFO record offset (VBR+1) */
4161 ST_WORD(tbl
+BPB_BkBootSec
, 6); /* Backup boot record offset (VBR+6) */
4162 tbl
[BS_DrvNum32
] = 0x80; /* Drive number */
4163 tbl
[BS_BootSig32
] = 0x29; /* Extended boot signature */
4164 mem_cpy(tbl
+BS_VolLab32
, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
4166 ST_DWORD(tbl
+BS_VolID
, n
); /* VSN */
4167 ST_WORD(tbl
+BPB_FATSz16
, n_fat
); /* Number of sectors per FAT */
4168 tbl
[BS_DrvNum
] = 0x80; /* Drive number */
4169 tbl
[BS_BootSig
] = 0x29; /* Extended boot signature */
4170 mem_cpy(tbl
+BS_VolLab
, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
4172 ST_WORD(tbl
+BS_55AA
, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
4173 if (disk_write(pdrv
, tbl
, b_vol
, 1) != RES_OK
) /* Write it to the VBR sector */
4175 if (fmt
== FS_FAT32
) /* Write backup VBR if needed (VBR+6) */
4176 disk_write(pdrv
, tbl
, b_vol
+ 6, 1);
4178 /* Initialize FAT area */
4180 for (i
= 0; i
< N_FATS
; i
++) { /* Initialize each FAT copy */
4181 mem_set(tbl
, 0, SS(fs
)); /* 1st sector of the FAT */
4182 n
= md
; /* Media descriptor byte */
4183 if (fmt
!= FS_FAT32
) {
4184 n
|= (fmt
== FS_FAT12
) ? 0x00FFFF00 : 0xFFFFFF00;
4185 ST_DWORD(tbl
+0, n
); /* Reserve cluster #0-1 (FAT12/16) */
4188 ST_DWORD(tbl
+0, n
); /* Reserve cluster #0-1 (FAT32) */
4189 ST_DWORD(tbl
+4, 0xFFFFFFFF);
4190 ST_DWORD(tbl
+8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */
4192 if (disk_write(pdrv
, tbl
, wsect
++, 1) != RES_OK
)
4194 mem_set(tbl
, 0, SS(fs
)); /* Fill following FAT entries with zero */
4195 for (n
= 1; n
< n_fat
; n
++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
4196 if (disk_write(pdrv
, tbl
, wsect
++, 1) != RES_OK
)
4201 /* Initialize root directory */
4202 i
= (fmt
== FS_FAT32
) ? au
: (UINT
)n_dir
;
4204 if (disk_write(pdrv
, tbl
, wsect
++, 1) != RES_OK
)
4208 #if _USE_TRIM /* Erase data area if needed */
4212 eb
[0] = wsect
; eb
[1] = wsect
+ (n_clst
- ((fmt
== FS_FAT32
) ? 1 : 0)) * au
- 1;
4213 disk_ioctl(pdrv
, CTRL_TRIM
, eb
);
4217 /* Create FSINFO if needed */
4218 if (fmt
== FS_FAT32
) {
4219 ST_DWORD(tbl
+FSI_LeadSig
, 0x41615252);
4220 ST_DWORD(tbl
+FSI_StrucSig
, 0x61417272);
4221 ST_DWORD(tbl
+FSI_Free_Count
, n_clst
- 1); /* Number of free clusters */
4222 ST_DWORD(tbl
+FSI_Nxt_Free
, 2); /* Last allocated cluster# */
4223 ST_WORD(tbl
+BS_55AA
, 0xAA55);
4224 disk_write(pdrv
, tbl
, b_vol
+ 1, 1); /* Write original (VBR+1) */
4225 disk_write(pdrv
, tbl
, b_vol
+ 7, 1); /* Write backup (VBR+7) */
4228 return (disk_ioctl(pdrv
, CTRL_SYNC
, 0) == RES_OK
) ? FR_OK
: FR_DISK_ERR
;
4233 #if _MULTI_PARTITION
4234 /*-----------------------------------------------------------------------*/
4235 /* Divide Physical Drive */
4236 /*-----------------------------------------------------------------------*/
4239 BYTE pdrv
, /* Physical drive number */
4240 const DWORD szt
[], /* Pointer to the size table for each partitions */
4241 void* work
/* Pointer to the working buffer */
4244 UINT i
, n
, sz_cyl
, tot_cyl
, b_cyl
, e_cyl
, p_cyl
;
4245 BYTE s_hd
, e_hd
, *p
, *buf
= (BYTE
*)work
;
4247 DWORD sz_disk
, sz_part
, s_part
;
4250 stat
= disk_initialize(pdrv
);
4251 if (stat
& STA_NOINIT
) return FR_NOT_READY
;
4252 if (stat
& STA_PROTECT
) return FR_WRITE_PROTECTED
;
4253 if (disk_ioctl(pdrv
, GET_SECTOR_COUNT
, &sz_disk
)) return FR_DISK_ERR
;
4255 /* Determine CHS in the table regardless of the drive geometry */
4256 for (n
= 16; n
< 256 && sz_disk
/ n
/ 63 > 1024; n
*= 2) ;
4260 tot_cyl
= sz_disk
/ sz_cyl
;
4262 /* Create partition table */
4263 mem_set(buf
, 0, _MAX_SS
);
4264 p
= buf
+ MBR_Table
; b_cyl
= 0;
4265 for (i
= 0; i
< 4; i
++, p
+= SZ_PTE
) {
4266 p_cyl
= (szt
[i
] <= 100U) ? (DWORD
)tot_cyl
* szt
[i
] / 100 : szt
[i
] / sz_cyl
;
4267 if (!p_cyl
) continue;
4268 s_part
= (DWORD
)sz_cyl
* b_cyl
;
4269 sz_part
= (DWORD
)sz_cyl
* p_cyl
;
4270 if (i
== 0) { /* Exclude first track of cylinder 0 */
4272 s_part
+= 63; sz_part
-= 63;
4276 e_cyl
= b_cyl
+ p_cyl
- 1;
4277 if (e_cyl
>= tot_cyl
) return FR_INVALID_PARAMETER
;
4279 /* Set partition table */
4280 p
[1] = s_hd
; /* Start head */
4281 p
[2] = (BYTE
)((b_cyl
>> 2) + 1); /* Start sector */
4282 p
[3] = (BYTE
)b_cyl
; /* Start cylinder */
4283 p
[4] = 0x06; /* System type (temporary setting) */
4284 p
[5] = e_hd
; /* End head */
4285 p
[6] = (BYTE
)((e_cyl
>> 2) + 63); /* End sector */
4286 p
[7] = (BYTE
)e_cyl
; /* End cylinder */
4287 ST_DWORD(p
+ 8, s_part
); /* Start sector in LBA */
4288 ST_DWORD(p
+ 12, sz_part
); /* Partition size */
4290 /* Next partition */
4295 /* Write it to the MBR */
4296 return (disk_write(pdrv
, buf
, 0, 1) != RES_OK
|| disk_ioctl(pdrv
, CTRL_SYNC
, 0) != RES_OK
) ? FR_DISK_ERR
: FR_OK
;
4300 #endif /* _MULTI_PARTITION */
4301 #endif /* _USE_MKFS && !_FS_READONLY */
4307 /*-----------------------------------------------------------------------*/
4308 /* Get a string from the file */
4309 /*-----------------------------------------------------------------------*/
4312 TCHAR
* buff
, /* Pointer to the string buffer to read */
4313 int len
, /* Size of string buffer (characters) */
4314 FIL
* fp
/* Pointer to the file object */
4323 while (n
< len
- 1) { /* Read characters until buffer gets filled */
4324 #if _USE_LFN && _LFN_UNICODE
4325 #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
4326 f_read(fp
, s
, 1, &rc
);
4330 if (c
< 0xC0) continue; /* Skip stray trailer */
4331 if (c
< 0xE0) { /* Two-byte sequence */
4332 f_read(fp
, s
, 1, &rc
);
4334 c
= (c
& 0x1F) << 6 | (s
[0] & 0x3F);
4335 if (c
< 0x80) c
= '?';
4337 if (c
< 0xF0) { /* Three-byte sequence */
4338 f_read(fp
, s
, 2, &rc
);
4340 c
= c
<< 12 | (s
[0] & 0x3F) << 6 | (s
[1] & 0x3F);
4341 if (c
< 0x800) c
= '?';
4342 } else { /* Reject four-byte sequence */
4347 #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
4348 f_read(fp
, s
, 2, &rc
);
4350 c
= s
[1] + (s
[0] << 8);
4351 #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
4352 f_read(fp
, s
, 2, &rc
);
4354 c
= s
[0] + (s
[1] << 8);
4355 #else /* Read a character in ANSI/OEM */
4356 f_read(fp
, s
, 1, &rc
);
4360 f_read(fp
, s
, 1, &rc
);
4362 c
= (c
<< 8) + s
[0];
4364 c
= ff_convert(c
, 1); /* OEM -> Unicode */
4367 #else /* Read a character without conversion */
4368 f_read(fp
, s
, 1, &rc
);
4372 if (_USE_STRFUNC
== 2 && c
== '\r') continue; /* Strip '\r' */
4375 if (c
== '\n') break; /* Break on EOL */
4378 return n
? buff
: 0; /* When no data read (eof or error), return with error. */
4385 /*-----------------------------------------------------------------------*/
4386 /* Put a character to the file */
4387 /*-----------------------------------------------------------------------*/
4406 if (_USE_STRFUNC
== 2 && c
== '\n') /* LF -> CRLF conversion */
4409 i
= pb
->idx
; /* Buffer write index (-1:error) */
4412 #if _USE_LFN && _LFN_UNICODE
4413 #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
4414 if (c
< 0x80) { /* 7-bit */
4415 pb
->buf
[i
++] = (BYTE
)c
;
4417 if (c
< 0x800) { /* 11-bit */
4418 pb
->buf
[i
++] = (BYTE
)(0xC0 | c
>> 6);
4419 } else { /* 16-bit */
4420 pb
->buf
[i
++] = (BYTE
)(0xE0 | c
>> 12);
4421 pb
->buf
[i
++] = (BYTE
)(0x80 | (c
>> 6 & 0x3F));
4423 pb
->buf
[i
++] = (BYTE
)(0x80 | (c
& 0x3F));
4425 #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
4426 pb
->buf
[i
++] = (BYTE
)(c
>> 8);
4427 pb
->buf
[i
++] = (BYTE
)c
;
4428 #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
4429 pb
->buf
[i
++] = (BYTE
)c
;
4430 pb
->buf
[i
++] = (BYTE
)(c
>> 8);
4431 #else /* Write a character in ANSI/OEM */
4432 c
= ff_convert(c
, 0); /* Unicode -> OEM */
4435 pb
->buf
[i
++] = (BYTE
)(c
>> 8);
4436 pb
->buf
[i
++] = (BYTE
)c
;
4438 #else /* Write a character without conversion */
4439 pb
->buf
[i
++] = (BYTE
)c
;
4442 if (i
>= (int)(sizeof pb
->buf
) - 3) { /* Write buffered characters to the file */
4443 f_write(pb
->fp
, pb
->buf
, (UINT
)i
, &bw
);
4444 i
= (bw
== (UINT
)i
) ? 0 : -1;
4453 TCHAR c
, /* A character to be output */
4454 FIL
* fp
/* Pointer to the file object */
4461 pb
.fp
= fp
; /* Initialize output buffer */
4462 pb
.nchr
= pb
.idx
= 0;
4464 putc_bfd(&pb
, c
); /* Put a character */
4466 if ( pb
.idx
>= 0 /* Flush buffered characters to the file */
4467 && f_write(pb
.fp
, pb
.buf
, (UINT
)pb
.idx
, &nw
) == FR_OK
4468 && (UINT
)pb
.idx
== nw
) return pb
.nchr
;
4475 /*-----------------------------------------------------------------------*/
4476 /* Put a string to the file */
4477 /*-----------------------------------------------------------------------*/
4480 const TCHAR
* str
, /* Pointer to the string to be output */
4481 FIL
* fp
/* Pointer to the file object */
4488 pb
.fp
= fp
; /* Initialize output buffer */
4489 pb
.nchr
= pb
.idx
= 0;
4491 while (*str
) /* Put the string */
4492 putc_bfd(&pb
, *str
++);
4494 if ( pb
.idx
>= 0 /* Flush buffered characters to the file */
4495 && f_write(pb
.fp
, pb
.buf
, (UINT
)pb
.idx
, &nw
) == FR_OK
4496 && (UINT
)pb
.idx
== nw
) return pb
.nchr
;
4503 /*-----------------------------------------------------------------------*/
4504 /* Put a formatted string to the file */
4505 /*-----------------------------------------------------------------------*/
4508 FIL
* fp
, /* Pointer to the file object */
4509 const TCHAR
* fmt
, /* Pointer to the format string */
4510 ... /* Optional arguments... */
4517 TCHAR c
, d
, s
[16], *p
;
4521 pb
.fp
= fp
; /* Initialize output buffer */
4522 pb
.nchr
= pb
.idx
= 0;
4528 if (c
== 0) break; /* End of string */
4529 if (c
!= '%') { /* Non escape character */
4535 if (c
== '0') { /* Flag: '0' padding */
4538 if (c
== '-') { /* Flag: left justified */
4542 while (IsDigit(c
)) { /* Precision */
4543 w
= w
* 10 + c
- '0';
4546 if (c
== 'l' || c
== 'L') { /* Prefix: Size is long int */
4551 if (IsLower(d
)) d
-= 0x20;
4552 switch (d
) { /* Type is... */
4553 case 'S' : /* String */
4554 p
= va_arg(arp
, TCHAR
*);
4555 for (j
= 0; p
[j
]; j
++) ;
4557 while (j
++ < w
) putc_bfd(&pb
, ' ');
4559 while (*p
) putc_bfd(&pb
, *p
++);
4560 while (j
++ < w
) putc_bfd(&pb
, ' ');
4562 case 'C' : /* Character */
4563 putc_bfd(&pb
, (TCHAR
)va_arg(arp
, int)); continue;
4564 case 'B' : /* Binary */
4566 case 'O' : /* Octal */
4568 case 'D' : /* Signed decimal */
4569 case 'U' : /* Unsigned decimal */
4571 case 'X' : /* Hexdecimal */
4573 default: /* Unknown type (pass-through) */
4574 putc_bfd(&pb
, c
); continue;
4577 /* Get an argument and put it in numeral */
4578 v
= (f
& 4) ? (DWORD
)va_arg(arp
, long) : ((d
== 'D') ? (DWORD
)(long)va_arg(arp
, int) : (DWORD
)va_arg(arp
, unsigned int));
4579 if (d
== 'D' && (v
& 0x80000000)) {
4585 d
= (TCHAR
)(v
% r
); v
/= r
;
4586 if (d
> 9) d
+= (c
== 'x') ? 0x27 : 0x07;
4588 } while (v
&& i
< sizeof s
/ sizeof s
[0]);
4589 if (f
& 8) s
[i
++] = '-';
4590 j
= i
; d
= (f
& 1) ? '0' : ' ';
4591 while (!(f
& 2) && j
++ < w
) putc_bfd(&pb
, d
);
4592 do putc_bfd(&pb
, s
[--i
]); while (i
);
4593 while (j
++ < w
) putc_bfd(&pb
, d
);
4598 if ( pb
.idx
>= 0 /* Flush buffered characters to the file */
4599 && f_write(pb
.fp
, pb
.buf
, (UINT
)pb
.idx
, &nw
) == FR_OK
4600 && (UINT
)pb
.idx
== nw
) return pb
.nchr
;
4604 #endif /* !_FS_READONLY */
4605 #endif /* _USE_STRFUNC */