HCoop / clinton / Smoothieware.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Upgrade gcc4mbed project used by Smoothie.
[clinton/Smoothieware.git] / src / libs / ChaNFS / CHAN_FS / ff.cpp
1 /*----------------------------------------------------------------------------/
2 / FatFs - FAT file system module R0.08b (C)ChaN, 2011
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.
7 /
8 / Copyright (C) 2011, ChaN, all right reserved.
9 /
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.
14 /
15 /-----------------------------------------------------------------------------/
16 / Feb 26,'06 R0.00 Prototype.
17 /
18 / Apr 29,'06 R0.01 First stable version.
19 /
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).
24 /
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.
29 /
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().
33 / Added f_mkfs().
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.
42 /
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.
50 /
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.
53 /
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 char.
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-dir on _FS_RPATH.
71 / Fixed name matching error on the 13 char boundary.
72 / Added a configuration option, _LFN_UNICODE.
73 / Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
74 /
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 member 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(). (_FS_RPATH = 2)
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 function.
89 / Ignores duplicated directory separators in given path names.
90 /---------------------------------------------------------------------------*/
91
92 #include "ff.h" /* FatFs configurations and declarations */
93 #include "diskio.h" /* Declarations of low level disk I/O functions */
94 #include "mbed.h"
95
96
97 /*--------------------------------------------------------------------------
98
99 Module Private Definitions
100
101 ---------------------------------------------------------------------------*/
102
103 #if _FATFS != 8237
104 #error Wrong include file (ff.h).
105 #endif
106
107
108 /* Definitions on sector size */
109 #if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
110 #error Wrong sector size.
111 #endif
112 #if _MAX_SS != 512
113 #define SS(fs) ((fs)->ssize) /* Multiple sector size */
114 #else
115 #define SS(fs) 512U /* Fixed sector size */
116 #endif
117
118
119 /* Reentrancy related */
120 #if _FS_REENTRANT
121 #if _USE_LFN == 1
122 #error Static LFN work area must not be used in re-entrant configuration.
123 #endif
124 #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
125 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
126 #else
127 #define ENTER_FF(fs)
128 #define LEAVE_FF(fs, res) return res
129 #endif
130
131 #define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
132
133
134 /* File shareing feature */
135 #if _FS_SHARE
136 #if _FS_READONLY
137 #error _FS_SHARE must be 0 on read-only cfg.
138 #endif
139 typedef struct {
140 FATFS *fs; /* File ID 1, volume (NULL:blank entry) */
141 DWORD clu; /* File ID 2, directory */
142 WORD idx; /* File ID 3, directory index */
143 WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
144 } FILESEM;
145 #endif
146
147
148 /* Misc definitions */
149 #define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
150 #define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);}
151
152
153 /* DBCS code ranges and SBCS extend char conversion table */
154
155 #if _CODE_PAGE == 932 /* Japanese Shift-JIS */
156 #define _DF1S 0x81 /* DBC 1st byte range 1 start */
157 #define _DF1E 0x9F /* DBC 1st byte range 1 end */
158 #define _DF2S 0xE0 /* DBC 1st byte range 2 start */
159 #define _DF2E 0xFC /* DBC 1st byte range 2 end */
160 #define _DS1S 0x40 /* DBC 2nd byte range 1 start */
161 #define _DS1E 0x7E /* DBC 2nd byte range 1 end */
162 #define _DS2S 0x80 /* DBC 2nd byte range 2 start */
163 #define _DS2E 0xFC /* DBC 2nd byte range 2 end */
164
165 #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
166 #define _DF1S 0x81
167 #define _DF1E 0xFE
168 #define _DS1S 0x40
169 #define _DS1E 0x7E
170 #define _DS2S 0x80
171 #define _DS2E 0xFE
172
173 #elif _CODE_PAGE == 949 /* Korean */
174 #define _DF1S 0x81
175 #define _DF1E 0xFE
176 #define _DS1S 0x41
177 #define _DS1E 0x5A
178 #define _DS2S 0x61
179 #define _DS2E 0x7A
180 #define _DS3S 0x81
181 #define _DS3E 0xFE
182
183 #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
184 #define _DF1S 0x81
185 #define _DF1E 0xFE
186 #define _DS1S 0x40
187 #define _DS1E 0x7E
188 #define _DS2S 0xA1
189 #define _DS2E 0xFE
190
191 #elif _CODE_PAGE == 437 /* U.S. (OEM) */
192 #define _DF1S 0
193 #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, \
194 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, \
195 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, \
196 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}
197
198 #elif _CODE_PAGE == 720 /* Arabic (OEM) */
199 #define _DF1S 0
200 #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, \
201 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, \
202 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, \
203 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}
204
205 #elif _CODE_PAGE == 737 /* Greek (OEM) */
206 #define _DF1S 0
207 #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, \
208 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, \
209 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, \
210 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}
211
212 #elif _CODE_PAGE == 775 /* Baltic (OEM) */
213 #define _DF1S 0
214 #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, \
215 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, \
216 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, \
217 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}
218
219 #elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
220 #define _DF1S 0
221 #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, \
222 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, \
223 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, \
224 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}
225
226 #elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
227 #define _DF1S 0
228 #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, \
229 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, \
230 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, \
231 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}
232
233 #elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
234 #define _DF1S 0
235 #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, \
236 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, \
237 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, \
238 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}
239
240 #elif _CODE_PAGE == 857 /* Turkish (OEM) */
241 #define _DF1S 0
242 #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, \
243 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, \
244 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, \
245 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}
246
247 #elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
248 #define _DF1S 0
249 #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, \
250 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, \
251 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, \
252 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}
253
254 #elif _CODE_PAGE == 862 /* Hebrew (OEM) */
255 #define _DF1S 0
256 #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, \
257 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, \
258 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, \
259 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}
260
261 #elif _CODE_PAGE == 866 /* Russian (OEM) */
262 #define _DF1S 0
263 #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, \
264 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, \
265 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, \
266 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}
267
268 #elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
269 #define _DF1S 0
270 #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, \
271 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, \
272 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, \
273 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}
274
275 #elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
276 #define _DF1S 0
277 #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, \
278 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, \
279 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, \
280 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}
281
282 #elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
283 #define _DF1S 0
284 #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, \
285 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, \
286 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, \
287 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}
288
289 #elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
290 #define _DF1S 0
291 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
292 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, \
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 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}
295
296 #elif _CODE_PAGE == 1253 /* Greek (Windows) */
297 #define _DF1S 0
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 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, \
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,0xA2,0xB8,0xB9,0xBA, \
301 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}
302
303 #elif _CODE_PAGE == 1254 /* Turkish (Windows) */
304 #define _DF1S 0
305 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
306 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, \
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 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}
309
310 #elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
311 #define _DF1S 0
312 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
313 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, \
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 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}
316
317 #elif _CODE_PAGE == 1256 /* Arabic (Windows) */
318 #define _DF1S 0
319 #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, \
320 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, \
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 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}
323
324 #elif _CODE_PAGE == 1257 /* Baltic (Windows) */
325 #define _DF1S 0
326 #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
327 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, \
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,0xFF}
330
331 #elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
332 #define _DF1S 0
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,0xAC,0x9D,0x9E,0x9F, \
334 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, \
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,0xDC,0xDD,0xDE,0xDF, \
336 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}
337
338 #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
339 #if _USE_LFN
340 #error Cannot use LFN feature without valid code page.
341 #endif
342 #define _DF1S 0
343
344 #else
345 #error Unknown code page
346
347 #endif
348
349
350 /* Character code support macros */
351 #define IsUpper(c) (((c)>='A')&&((c)<='Z'))
352 #define IsLower(c) (((c)>='a')&&((c)<='z'))
353 #define IsDigit(c) (((c)>='0')&&((c)<='9'))
354
355 #if _DF1S /* Code page is DBCS */
356
357 #ifdef _DF2S /* Two 1st byte areas */
358 #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
359 #else /* One 1st byte area */
360 #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
361 #endif
362
363 #ifdef _DS3S /* Three 2nd byte areas */
364 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
365 #else /* Two 2nd byte areas */
366 #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
367 #endif
368
369 #else /* Code page is SBCS */
370
371 #define IsDBCS1(c) 0
372 #define IsDBCS2(c) 0
373
374 #endif /* _DF1S */
375
376
377 /* Name status flags */
378 #define NS 11 /* Index of name status byte in fn[] */
379 #define NS_LOSS 0x01 /* Out of 8.3 format */
380 #define NS_LFN 0x02 /* Force to create LFN entry */
381 #define NS_LAST 0x04 /* Last segment */
382 #define NS_BODY 0x08 /* Lower case flag (body) */
383 #define NS_EXT 0x10 /* Lower case flag (ext) */
384 #define NS_DOT 0x20 /* Dot entry */
385
386
387 /* FAT sub-type boundaries */
388 /* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
389 #define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
390 #define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
391
392
393 /* FatFs refers the members in the FAT structures as byte array instead of
394 / structure member because the structure is not binary compatible between
395 / different platforms */
396
397 #define BS_jmpBoot 0 /* Jump instruction (3) */
398 #define BS_OEMName 3 /* OEM name (8) */
399 #define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
400 #define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
401 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
402 #define BPB_NumFATs 16 /* Number of FAT copies (1) */
403 #define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
404 #define BPB_TotSec16 19 /* Volume size [sector] (2) */
405 #define BPB_Media 21 /* Media descriptor (1) */
406 #define BPB_FATSz16 22 /* FAT size [sector] (2) */
407 #define BPB_SecPerTrk 24 /* Track size [sector] (2) */
408 #define BPB_NumHeads 26 /* Number of heads (2) */
409 #define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
410 #define BPB_TotSec32 32 /* Volume size [sector] (4) */
411 #define BS_DrvNum 36 /* Physical drive number (2) */
412 #define BS_BootSig 38 /* Extended boot signature (1) */
413 #define BS_VolID 39 /* Volume serial number (4) */
414 #define BS_VolLab 43 /* Volume label (8) */
415 #define BS_FilSysType 54 /* File system type (1) */
416 #define BPB_FATSz32 36 /* FAT size [sector] (4) */
417 #define BPB_ExtFlags 40 /* Extended flags (2) */
418 #define BPB_FSVer 42 /* File system version (2) */
419 #define BPB_RootClus 44 /* Root dir first cluster (4) */
420 #define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
421 #define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */
422 #define BS_DrvNum32 64 /* Physical drive number (2) */
423 #define BS_BootSig32 66 /* Extended boot signature (1) */
424 #define BS_VolID32 67 /* Volume serial number (4) */
425 #define BS_VolLab32 71 /* Volume label (8) */
426 #define BS_FilSysType32 82 /* File system type (1) */
427 #define FSI_LeadSig 0 /* FSI: Leading signature (4) */
428 #define FSI_StrucSig 484 /* FSI: Structure signature (4) */
429 #define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
430 #define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
431 #define MBR_Table 446 /* MBR: Partition table offset (2) */
432 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
433 #define BS_55AA 510 /* Boot sector signature (2) */
434
435 #define DIR_Name 0 /* Short file name (11) */
436 #define DIR_Attr 11 /* Attribute (1) */
437 #define DIR_NTres 12 /* NT flag (1) */
438 #define DIR_CrtTime 14 /* Created time (2) */
439 #define DIR_CrtDate 16 /* Created date (2) */
440 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
441 #define DIR_WrtTime 22 /* Modified time (2) */
442 #define DIR_WrtDate 24 /* Modified date (2) */
443 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
444 #define DIR_FileSize 28 /* File size (4) */
445 #define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
446 #define LDIR_Attr 11 /* LFN attribute (1) */
447 #define LDIR_Type 12 /* LFN type (1) */
448 #define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
449 #define LDIR_FstClusLO 26 /* Filled by zero (0) */
450 #define SZ_DIR 32 /* Size of a directory entry */
451 #define LLE 0x40 /* Last long entry flag in LDIR_Ord */
452 #define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */
453 #define NDDE 0x05 /* Replacement of a character collides with DDE */
454
455
456 /*------------------------------------------------------------*/
457 /* Work area */
458
459 #if _VOLUMES
460 static
461 FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
462 #else
463 #error Number of drives must not be 0.
464 #endif
465
466 static
467 WORD Fsid; /* File system mount ID */
468
469 #if _FS_RPATH
470 static
471 BYTE CurrVol; /* Current drive */
472 #endif
473
474 #if _FS_SHARE
475 static
476 FILESEM Files[_FS_SHARE]; /* File lock semaphores */
477 #endif
478
479 #if _USE_LFN == 0 /* No LFN */
480 #define DEF_NAMEBUF BYTE sfn[12]
481 #define INIT_BUF(dobj) (dobj).fn = sfn
482 #define FREE_BUF()
483
484 #elif _USE_LFN == 1 /* LFN with static LFN working buffer */
485 static WCHAR LfnBuf[_MAX_LFN+1];
486 #define DEF_NAMEBUF BYTE sfn[12]
487 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
488 #define FREE_BUF()
489
490 #elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
491 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
492 #define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
493 #define FREE_BUF()
494
495 #elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
496 #define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
497 #define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
498 if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
499 (dobj).lfn = lfn; (dobj).fn = sfn; }
500 #define FREE_BUF() ff_memfree(lfn)
501
502 #else
503 #error Wrong LFN configuration.
504 #endif
505
506
507
508
509 /*--------------------------------------------------------------------------
510
511 Module Private Functions
512
513 ---------------------------------------------------------------------------*/
514
515 //static FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
516 //static WORD fsid; /* File system mount ID */
517
518 /*-----------------------------------------------------------------------*/
519 /* String functions */
520 /*-----------------------------------------------------------------------*/
521
522 /* Copy memory to memory */
523 static
524 void mem_cpy (void* dst, const void* src, UINT cnt) {
525 BYTE *d = (BYTE*)dst;
526 const BYTE *s = (const BYTE*)src;
527
528 #if _WORD_ACCESS == 1
529 while (cnt >= sizeof(int)) {
530 *(int*)d = *(int*)s;
531 d += sizeof(int); s += sizeof(int);
532 cnt -= sizeof(int);
533 }
534 #endif
535 while (cnt--)
536 *d++ = *s++;
537 }
538
539 /* Fill memory */
540 static
541 void mem_set (void* dst, int val, UINT cnt) {
542 BYTE *d = (BYTE*)dst;
543
544 while (cnt--)
545 *d++ = (BYTE)val;
546 }
547
548 /* Compare memory to memory */
549 static
550 int mem_cmp (const void* dst, const void* src, UINT cnt) {
551 const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
552 int r = 0;
553
554 while (cnt-- && (r = *d++ - *s++) == 0) ;
555 return r;
556 }
557
558 /* Check if chr is contained in the string */
559 static
560 int chk_chr (const char* str, int chr) {
561 while (*str && *str != chr) str++;
562 return *str;
563 }
564
565
566
567 /*-----------------------------------------------------------------------*/
568 /* Request/Release grant to access the volume */
569 /*-----------------------------------------------------------------------*/
570 #if _FS_REENTRANT
571
572 static
573 int lock_fs (
574 FATFS *fs /* File system object */
575 )
576 {
577 return ff_req_grant(fs->sobj);
578 }
579
580
581 static
582 void unlock_fs (
583 FATFS *fs, /* File system object */
584 FRESULT res /* Result code to be returned */
585 )
586 {
587 if (res != FR_NOT_ENABLED &&
588 res != FR_INVALID_DRIVE &&
589 res != FR_INVALID_OBJECT &&
590 res != FR_TIMEOUT) {
591 ff_rel_grant(fs->sobj);
592 }
593 }
594 #endif
595
596
597
598 /*-----------------------------------------------------------------------*/
599 /* File shareing control functions */
600 /*-----------------------------------------------------------------------*/
601 #if _FS_SHARE
602
603 static
604 FRESULT chk_lock ( /* Check if the file can be accessed */
605 DIR* dj, /* Directory object pointing the file to be checked */
606 int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
607 )
608 {
609 UINT i, be;
610
611 /* Search file semaphore table */
612 for (i = be = 0; i < _FS_SHARE; i++) {
613 if (Files[i].fs) { /* Existing entry */
614 if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
615 Files[i].clu == dj->sclust &&
616 Files[i].idx == dj->index) break;
617 } else { /* Blank entry */
618 be++;
619 }
620 }
621 if (i == _FS_SHARE) /* The file is not opened */
622 return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
623
624 /* The file has been opened. Reject any open against writing file and all write mode open */
625 return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
626 }
627
628
629 static
630 int enq_lock ( /* Check if an entry is available for a new file */
631 FATFS* fs /* File system object */
632 )
633 {
634 UINT i;
635
636 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
637 return (i == _FS_SHARE) ? 0 : 1;
638 }
639
640
641 static
642 UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
643 DIR* dj, /* Directory object pointing the file to register or increment */
644 int acc /* Desired access mode (0:Read, !0:Write) */
645 )
646 {
647 UINT i;
648
649
650 for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
651 if (Files[i].fs == dj->fs &&
652 Files[i].clu == dj->sclust &&
653 Files[i].idx == dj->index) break;
654 }
655
656 if (i == _FS_SHARE) { /* Not opened. Register it as new. */
657 for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
658 if (i == _FS_SHARE) return 0; /* No space to register (int err) */
659 Files[i].fs = dj->fs;
660 Files[i].clu = dj->sclust;
661 Files[i].idx = dj->index;
662 Files[i].ctr = 0;
663 }
664
665 if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
666
667 Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
668
669 return i + 1;
670 }
671
672
673 static
674 FRESULT dec_lock ( /* Decrement file open counter */
675 UINT i /* Semaphore index */
676 )
677 {
678 WORD n;
679 FRESULT res;
680
681
682 if (--i < _FS_SHARE) {
683 n = Files[i].ctr;
684 if (n == 0x100) n = 0;
685 if (n) n--;
686 Files[i].ctr = n;
687 if (!n) Files[i].fs = 0;
688 res = FR_OK;
689 } else {
690 res = FR_INT_ERR;
691 }
692 return res;
693 }
694
695
696 static
697 void clear_lock ( /* Clear lock entries of the volume */
698 FATFS *fs
699 )
700 {
701 UINT i;
702
703 for (i = 0; i < _FS_SHARE; i++) {
704 if (Files[i].fs == fs) Files[i].fs = 0;
705 }
706 }
707 #endif
708
709
710
711 /*-----------------------------------------------------------------------*/
712 /* Change window offset */
713 /*-----------------------------------------------------------------------*/
714
715 static
716 FRESULT move_window (
717 FATFS *fs, /* File system object */
718 DWORD sector /* Sector number to make appearance in the fs->win[] */
719 ) /* Move to zero only writes back dirty window */
720 {
721 DWORD wsect;
722
723
724 wsect = fs->winsect;
725 if (wsect != sector) { /* Changed current window */
726 #if !_FS_READONLY
727 if (fs->wflag) { /* Write back dirty window if needed */
728 if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
729 return FR_DISK_ERR;
730 fs->wflag = 0;
731 if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
732 BYTE nf;
733 for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
734 wsect += fs->fsize;
735 disk_write(fs->drv, fs->win, wsect, 1);
736 }
737 }
738 }
739 #endif
740 if (sector) {
741 if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
742 return FR_DISK_ERR;
743 fs->winsect = sector;
744 }
745 }
746
747 return FR_OK;
748 }
749
750
751
752
753 /*-----------------------------------------------------------------------*/
754 /* Clean-up cached data */
755 /*-----------------------------------------------------------------------*/
756 #if !_FS_READONLY
757 static
758 FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
759 FATFS *fs /* File system object */
760 )
761 {
762 FRESULT res;
763
764
765 res = move_window(fs, 0);
766 if (res == FR_OK) {
767 /* Update FSInfo sector if needed */
768 if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
769 fs->winsect = 0;
770 /* Create FSInfo structure */
771 mem_set(fs->win, 0, 512);
772 ST_WORD(fs->win+BS_55AA, 0xAA55);
773 ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
774 ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
775 ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
776 ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
777 /* Write it into the FSInfo sector */
778 disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
779 fs->fsi_flag = 0;
780 }
781 /* Make sure that no pending write process in the physical drive */
782 if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
783 res = FR_DISK_ERR;
784 }
785
786 return res;
787 }
788 #endif
789
790
791
792
793 /*-----------------------------------------------------------------------*/
794 /* Get sector# from cluster# */
795 /*-----------------------------------------------------------------------*/
796
797
798 DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
799 FATFS *fs, /* File system object */
800 DWORD clst /* Cluster# to be converted */
801 )
802 {
803 clst -= 2;
804 if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
805 return clst * fs->csize + fs->database;
806 }
807
808
809
810
811 /*-----------------------------------------------------------------------*/
812 /* FAT access - Read value of a FAT entry */
813 /*-----------------------------------------------------------------------*/
814
815
816 DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
817 FATFS *fs, /* File system object */
818 DWORD clst /* Cluster# to get the link information */
819 )
820 {
821 UINT wc, bc;
822 BYTE *p;
823
824
825 if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
826 return 1;
827
828 switch (fs->fs_type) {
829 case FS_FAT12 :
830 bc = (UINT)clst; bc += bc / 2;
831 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
832 wc = fs->win[bc % SS(fs)]; bc++;
833 if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
834 wc |= fs->win[bc % SS(fs)] << 8;
835 return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
836
837 case FS_FAT16 :
838 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
839 p = &fs->win[clst * 2 % SS(fs)];
840 return LD_WORD(p);
841
842 case FS_FAT32 :
843 if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
844 p = &fs->win[clst * 4 % SS(fs)];
845 return LD_DWORD(p) & 0x0FFFFFFF;
846 }
847
848 return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
849 }
850
851
852
853
854 /*-----------------------------------------------------------------------*/
855 /* FAT access - Change value of a FAT entry */
856 /*-----------------------------------------------------------------------*/
857 #if !_FS_READONLY
858
859 FRESULT put_fat (
860 FATFS *fs, /* File system object */
861 DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
862 DWORD val /* New value to mark the cluster */
863 )
864 {
865 UINT bc;
866 BYTE *p;
867 FRESULT res;
868
869
870 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
871 res = FR_INT_ERR;
872
873 } else {
874 switch (fs->fs_type) {
875 case FS_FAT12 :
876 bc = clst; bc += bc / 2;
877 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
878 if (res != FR_OK) break;
879 p = &fs->win[bc % SS(fs)];
880 *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
881 bc++;
882 fs->wflag = 1;
883 res = move_window(fs, fs->fatbase + (bc / SS(fs)));
884 if (res != FR_OK) break;
885 p = &fs->win[bc % SS(fs)];
886 *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
887 break;
888
889 case FS_FAT16 :
890 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
891 if (res != FR_OK) break;
892 p = &fs->win[clst * 2 % SS(fs)];
893 ST_WORD(p, (WORD)val);
894 break;
895
896 case FS_FAT32 :
897 res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
898 if (res != FR_OK) break;
899 p = &fs->win[clst * 4 % SS(fs)];
900 val |= LD_DWORD(p) & 0xF0000000;
901 ST_DWORD(p, val);
902 break;
903
904 default :
905 res = FR_INT_ERR;
906 }
907 fs->wflag = 1;
908 }
909
910 return res;
911 }
912 #endif /* !_FS_READONLY */
913
914
915
916
917 /*-----------------------------------------------------------------------*/
918 /* FAT handling - Remove a cluster chain */
919 /*-----------------------------------------------------------------------*/
920 #if !_FS_READONLY
921 static
922 FRESULT remove_chain (
923 FATFS *fs, /* File system object */
924 DWORD clst /* Cluster# to remove a chain from */
925 )
926 {
927 FRESULT res;
928 DWORD nxt;
929 #if _USE_ERASE
930 DWORD scl = clst, ecl = clst, resion[2];
931 #endif
932
933 if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
934 res = FR_INT_ERR;
935
936 } else {
937 res = FR_OK;
938 while (clst < fs->n_fatent) { /* Not a last link? */
939 nxt = get_fat(fs, clst); /* Get cluster status */
940 if (nxt == 0) break; /* Empty cluster? */
941 if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
942 if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
943 res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
944 if (res != FR_OK) break;
945 if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
946 fs->free_clust++;
947 fs->fsi_flag = 1;
948 }
949 #if _USE_ERASE
950 if (ecl + 1 == nxt) { /* Next cluster is contiguous */
951 ecl = nxt;
952 } else { /* End of contiguous clusters */
953 resion[0] = clust2sect(fs, scl); /* Start sector */
954 resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
955 disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */
956 scl = ecl = nxt;
957 }
958 #endif
959 clst = nxt; /* Next cluster */
960 }
961 }
962
963 return res;
964 }
965 #endif
966
967
968
969
970 /*-----------------------------------------------------------------------*/
971 /* FAT handling - Stretch or Create a cluster chain */
972 /*-----------------------------------------------------------------------*/
973 #if !_FS_READONLY
974 static
975 DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
976 FATFS *fs, /* File system object */
977 DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
978 )
979 {
980 DWORD cs, ncl, scl;
981 FRESULT res;
982
983
984 if (clst == 0) { /* Create a new chain */
985 scl = fs->last_clust; /* Get suggested start point */
986 if (!scl || scl >= fs->n_fatent) scl = 1;
987 }
988 else { /* Stretch the current chain */
989 cs = get_fat(fs, clst); /* Check the cluster status */
990 if (cs < 2) return 1; /* It is an invalid cluster */
991 if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
992 scl = clst;
993 }
994
995 ncl = scl; /* Start cluster */
996 for (;;) {
997 ncl++; /* Next cluster */
998 if (ncl >= fs->n_fatent) { /* Wrap around */
999 ncl = 2;
1000 if (ncl > scl) return 0; /* No free cluster */
1001 }
1002 cs = get_fat(fs, ncl); /* Get the cluster status */
1003 if (cs == 0) break; /* Found a free cluster */
1004 if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
1005 return cs;
1006 if (ncl == scl) return 0; /* No free cluster */
1007 }
1008
1009 res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
1010 if (res == FR_OK && clst != 0) {
1011 res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
1012 }
1013 if (res == FR_OK) {
1014 fs->last_clust = ncl; /* Update FSINFO */
1015 if (fs->free_clust != 0xFFFFFFFF) {
1016 fs->free_clust--;
1017 fs->fsi_flag = 1;
1018 }
1019 } else {
1020 ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
1021 }
1022
1023 return ncl; /* Return new cluster number or error code */
1024 }
1025 #endif /* !_FS_READONLY */
1026
1027
1028
1029 /*-----------------------------------------------------------------------*/
1030 /* FAT handling - Convert offset into cluster with link map table */
1031 /*-----------------------------------------------------------------------*/
1032
1033 #if _USE_FASTSEEK
1034 static
1035 DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
1036 FIL* fp, /* Pointer to the file object */
1037 DWORD ofs /* File offset to be converted to cluster# */
1038 )
1039 {
1040 DWORD cl, ncl, *tbl;
1041
1042
1043 tbl = fp->cltbl + 1; /* Top of CLMT */
1044 cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
1045 for (;;) {
1046 ncl = *tbl++; /* Number of cluters in the fragment */
1047 if (!ncl) return 0; /* End of table? (error) */
1048 if (cl < ncl) break; /* In this fragment? */
1049 cl -= ncl; tbl++; /* Next fragment */
1050 }
1051 return cl + *tbl; /* Return the cluster number */
1052 }
1053 #endif /* _USE_FASTSEEK */
1054
1055
1056
1057 /*-----------------------------------------------------------------------*/
1058 /* Directory handling - Set directory index */
1059 /*-----------------------------------------------------------------------*/
1060
1061 static
1062 FRESULT dir_sdi (
1063 DIR_t *dj, /* Pointer to directory object */
1064 WORD idx /* Directory index number */
1065 )
1066 {
1067 DWORD clst;
1068 WORD ic;
1069
1070
1071 dj->index = idx;
1072 clst = dj->sclust;
1073 if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
1074 return FR_INT_ERR;
1075 if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
1076 clst = dj->fs->dirbase;
1077
1078 if (clst == 0) { /* Static table (root-dir in FAT12/16) */
1079 dj->clust = clst;
1080 if (idx >= dj->fs->n_rootdir) /* Index is out of range */
1081 return FR_INT_ERR;
1082 dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
1083 }
1084 else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
1085 ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
1086 while (idx >= ic) { /* Follow cluster chain */
1087 clst = get_fat(dj->fs, clst); /* Get next cluster */
1088 if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
1089 if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
1090 return FR_INT_ERR;
1091 idx -= ic;
1092 }
1093 dj->clust = clst;
1094 dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
1095 }
1096
1097 dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
1098
1099 return FR_OK; /* Seek succeeded */
1100 }
1101
1102
1103
1104
1105 /*-----------------------------------------------------------------------*/
1106 /* Directory handling - Move directory index next */
1107 /*-----------------------------------------------------------------------*/
1108
1109 static
1110 FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
1111 DIR_t *dj, /* Pointer to directory object */
1112 int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
1113 )
1114 {
1115 DWORD clst;
1116 WORD i;
1117
1118
1119 i = dj->index + 1;
1120 if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
1121 return FR_NO_FILE;
1122
1123 if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
1124 dj->sect++; /* Next sector */
1125
1126 if (dj->clust == 0) { /* Static table */
1127 if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
1128 return FR_NO_FILE;
1129 }
1130 else { /* Dynamic table */
1131 if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
1132 clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
1133 if (clst <= 1) return FR_INT_ERR;
1134 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
1135 if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
1136 #if !_FS_READONLY
1137 BYTE c;
1138 if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
1139 clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
1140 if (clst == 0) return FR_DENIED; /* No free cluster */
1141 if (clst == 1) return FR_INT_ERR;
1142 if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
1143 /* Clean-up stretched table */
1144 if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
1145 mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
1146 dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
1147 for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
1148 dj->fs->wflag = 1;
1149 if (move_window(dj->fs, 0)) return FR_DISK_ERR;
1150 dj->fs->winsect++;
1151 }
1152 dj->fs->winsect -= c; /* Rewind window address */
1153 #else
1154 return FR_NO_FILE; /* Report EOT */
1155 #endif
1156 }
1157 dj->clust = clst; /* Initialize data for new cluster */
1158 dj->sect = clust2sect(dj->fs, clst);
1159 }
1160 }
1161 }
1162
1163 dj->index = i;
1164 dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
1165
1166 return FR_OK;
1167 }
1168
1169
1170
1171
1172 /*-----------------------------------------------------------------------*/
1173 /* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
1174 /*-----------------------------------------------------------------------*/
1175 #if _USE_LFN
1176 static
1177 const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
1178
1179
1180 static
1181 int cmp_lfn ( /* 1:Matched, 0:Not matched */
1182 WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
1183 BYTE *dir /* Pointer to the directory entry containing a part of LFN */
1184 )
1185 {
1186 UINT i, s;
1187 WCHAR wc, uc;
1188
1189
1190 i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
1191 s = 0; wc = 1;
1192 do {
1193 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
1194 if (wc) { /* Last char has not been processed */
1195 wc = ff_wtoupper(uc); /* Convert it to upper case */
1196 if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
1197 return 0; /* Not matched */
1198 } else {
1199 if (uc != 0xFFFF) return 0; /* Check filler */
1200 }
1201 } while (++s < 13); /* Repeat until all chars in the entry are checked */
1202
1203 if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
1204 return 0;
1205
1206 return 1; /* The part of LFN matched */
1207 }
1208
1209
1210
1211 static
1212 int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
1213 WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
1214 BYTE *dir /* Pointer to the directory entry */
1215 )
1216 {
1217 UINT i, s;
1218 WCHAR wc, uc;
1219
1220
1221 i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
1222
1223 s = 0; wc = 1;
1224 do {
1225 uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
1226 if (wc) { /* Last char has not been processed */
1227 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
1228 lfnbuf[i++] = wc = uc; /* Store it */
1229 } else {
1230 if (uc != 0xFFFF) return 0; /* Check filler */
1231 }
1232 } while (++s < 13); /* Read all character in the entry */
1233
1234 if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
1235 if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
1236 lfnbuf[i] = 0;
1237 }
1238
1239 return 1;
1240 }
1241
1242
1243 #if !_FS_READONLY
1244 static
1245 void fit_lfn (
1246 const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
1247 BYTE *dir, /* Pointer to the directory entry */
1248 BYTE ord, /* LFN order (1-20) */
1249 BYTE sum /* SFN sum */
1250 )
1251 {
1252 UINT i, s;
1253 WCHAR wc;
1254
1255
1256 dir[LDIR_Chksum] = sum; /* Set check sum */
1257 dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
1258 dir[LDIR_Type] = 0;
1259 ST_WORD(dir+LDIR_FstClusLO, 0);
1260
1261 i = (ord - 1) * 13; /* Get offset in the LFN buffer */
1262 s = wc = 0;
1263 do {
1264 if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
1265 ST_WORD(dir+LfnOfs[s], wc); /* Put it */
1266 if (!wc) wc = 0xFFFF; /* Padding chars following last char */
1267 } while (++s < 13);
1268 if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */
1269 dir[LDIR_Ord] = ord; /* Set the LFN order */
1270 }
1271
1272 #endif
1273 #endif
1274
1275
1276
1277 /*-----------------------------------------------------------------------*/
1278 /* Create numbered name */
1279 /*-----------------------------------------------------------------------*/
1280 #if _USE_LFN
1281 void gen_numname (
1282 BYTE *dst, /* Pointer to generated SFN */
1283 const BYTE *src, /* Pointer to source SFN to be modified */
1284 const WCHAR *lfn, /* Pointer to LFN */
1285 WORD seq /* Sequence number */
1286 )
1287 {
1288 BYTE ns[8], c;
1289 UINT i, j;
1290
1291
1292 mem_cpy(dst, src, 11);
1293
1294 if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
1295 do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
1296 }
1297
1298 /* itoa (hexdecimal) */
1299 i = 7;
1300 do {
1301 c = (seq % 16) + '0';
1302 if (c > '9') c += 7;
1303 ns[i--] = c;
1304 seq /= 16;
1305 } while (seq);
1306 ns[i] = '~';
1307
1308 /* Append the number */
1309 for (j = 0; j < i && dst[j] != ' '; j++) {
1310 if (IsDBCS1(dst[j])) {
1311 if (j == i - 1) break;
1312 j++;
1313 }
1314 }
1315 do {
1316 dst[j++] = (i < 8) ? ns[i++] : ' ';
1317 } while (j < 8);
1318 }
1319 #endif
1320
1321
1322
1323
1324 /*-----------------------------------------------------------------------*/
1325 /* Calculate sum of an SFN */
1326 /*-----------------------------------------------------------------------*/
1327 #if _USE_LFN
1328 static
1329 BYTE sum_sfn (
1330 const BYTE *dir /* Ptr to directory entry */
1331 )
1332 {
1333 BYTE sum = 0;
1334 UINT n = 11;
1335
1336 do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
1337 return sum;
1338 }
1339 #endif
1340
1341
1342
1343
1344 /*-----------------------------------------------------------------------*/
1345 /* Directory handling - Find an object in the directory */
1346 /*-----------------------------------------------------------------------*/
1347
1348 static
1349 FRESULT dir_find (
1350 DIR_t *dj /* Pointer to the directory object linked to the file name */
1351 )
1352 {
1353 FRESULT res;
1354 BYTE c, *dir;
1355 #if _USE_LFN
1356 BYTE a, ord, sum;
1357 #endif
1358
1359 res = dir_sdi(dj, 0); /* Rewind directory object */
1360 if (res != FR_OK) return res;
1361
1362 #if _USE_LFN
1363 ord = sum = 0xFF;
1364 #endif
1365 do {
1366 res = move_window(dj->fs, dj->sect);
1367 if (res != FR_OK) break;
1368 dir = dj->dir; /* Ptr to the directory entry of current index */
1369 c = dir[DIR_Name];
1370 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
1371 #if _USE_LFN /* LFN configuration */
1372 a = dir[DIR_Attr] & AM_MASK;
1373 if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
1374 ord = 0xFF;
1375 } else {
1376 if (a == AM_LFN) { /* An LFN entry is found */
1377 if (dj->lfn) {
1378 if (c & LLE) { /* Is it start of LFN sequence? */
1379 sum = dir[LDIR_Chksum];
1380 c &= ~LLE; ord = c; /* LFN start order */
1381 dj->lfn_idx = dj->index;
1382 }
1383 /* Check validity of the LFN entry and compare it with given name */
1384 ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
1385 }
1386 } else { /* An SFN entry is found */
1387 if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
1388 ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
1389 if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
1390 }
1391 }
1392 #else /* Non LFN configuration */
1393 if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
1394 break;
1395 #endif
1396 res = dir_next(dj, 0); /* Next entry */
1397 } while (res == FR_OK);
1398
1399 return res;
1400 }
1401
1402
1403
1404
1405 /*-----------------------------------------------------------------------*/
1406 /* Read an object from the directory */
1407 /*-----------------------------------------------------------------------*/
1408 #if _FS_MINIMIZE <= 1
1409 static
1410 FRESULT dir_read (
1411 DIR_t *dj /* Pointer to the directory object that pointing the entry to be read */
1412 )
1413 {
1414 FRESULT res;
1415 BYTE c, *dir;
1416 #if _USE_LFN
1417 BYTE a, ord = 0xFF, sum = 0xFF;
1418 #endif
1419
1420 res = FR_NO_FILE;
1421 while (dj->sect) {
1422 res = move_window(dj->fs, dj->sect);
1423 if (res != FR_OK) break;
1424 dir = dj->dir; /* Ptr to the directory entry of current index */
1425 c = dir[DIR_Name];
1426 if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
1427 #if _USE_LFN /* LFN configuration */
1428 a = dir[DIR_Attr] & AM_MASK;
1429 if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
1430 ord = 0xFF;
1431 } else {
1432 if (a == AM_LFN) { /* An LFN entry is found */
1433 if (c & LLE) { /* Is it start of LFN sequence? */
1434 sum = dir[LDIR_Chksum];
1435 c &= ~LLE; ord = c;
1436 dj->lfn_idx = dj->index;
1437 }
1438 /* Check LFN validity and capture it */
1439 ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
1440 } else { /* An SFN entry is found */
1441 if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
1442 dj->lfn_idx = 0xFFFF; /* It has no LFN. */
1443 break;
1444 }
1445 }
1446 #else /* Non LFN configuration */
1447 if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
1448 break;
1449 #endif
1450 res = dir_next(dj, 0); /* Next entry */
1451 if (res != FR_OK) break;
1452 }
1453
1454 if (res != FR_OK) dj->sect = 0;
1455
1456 return res;
1457 }
1458 #endif
1459
1460
1461
1462 /*-----------------------------------------------------------------------*/
1463 /* Register an object to the directory */
1464 /*-----------------------------------------------------------------------*/
1465 #if !_FS_READONLY
1466 static
1467 FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
1468 DIR_t *dj /* Target directory with object name to be created */
1469 )
1470 {
1471 FRESULT res;
1472 BYTE c, *dir;
1473 #if _USE_LFN /* LFN configuration */
1474 WORD n, ne, is;
1475 BYTE sn[12], *fn, sum;
1476 WCHAR *lfn;
1477
1478
1479 fn = dj->fn; lfn = dj->lfn;
1480 mem_cpy(sn, fn, 12);
1481
1482 if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
1483 return FR_INVALID_NAME;
1484
1485 if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
1486 fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
1487 for (n = 1; n < 100; n++) {
1488 gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
1489 res = dir_find(dj); /* Check if the name collides with existing SFN */
1490 if (res != FR_OK) break;
1491 }
1492 if (n == 100) return FR_DENIED; /* Abort if too many collisions */
1493 if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
1494 fn[NS] = sn[NS]; dj->lfn = lfn;
1495 }
1496
1497 if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
1498 for (ne = 0; lfn[ne]; ne++) ;
1499 ne = (ne + 25) / 13;
1500 } else { /* Otherwise reserve only an SFN entry. */
1501 ne = 1;
1502 }
1503
1504 /* Reserve contiguous entries */
1505 res = dir_sdi(dj, 0);
1506 if (res != FR_OK) return res;
1507 n = is = 0;
1508 do {
1509 res = move_window(dj->fs, dj->sect);
1510 if (res != FR_OK) break;
1511 c = *dj->dir; /* Check the entry status */
1512 if (c == DDE || c == 0) { /* Is it a blank entry? */
1513 if (n == 0) is = dj->index; /* First index of the contiguous entry */
1514 if (++n == ne) break; /* A contiguous entry that required count is found */
1515 } else {
1516 n = 0; /* Not a blank entry. Restart to search */
1517 }
1518 res = dir_next(dj, 1); /* Next entry with table stretch */
1519 } while (res == FR_OK);
1520
1521 if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
1522 res = dir_sdi(dj, is);
1523 if (res == FR_OK) {
1524 sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
1525 ne--;
1526 do { /* Store LFN entries in bottom first */
1527 res = move_window(dj->fs, dj->sect);
1528 if (res != FR_OK) break;
1529 fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
1530 dj->fs->wflag = 1;
1531 res = dir_next(dj, 0); /* Next entry */
1532 } while (res == FR_OK && --ne);
1533 }
1534 }
1535
1536 #else /* Non LFN configuration */
1537 res = dir_sdi(dj, 0);
1538 if (res == FR_OK) {
1539 do { /* Find a blank entry for the SFN */
1540 res = move_window(dj->fs, dj->sect);
1541 if (res != FR_OK) break;
1542 c = *dj->dir;
1543 if (c == DDE || c == 0) break; /* Is it a blank entry? */
1544 res = dir_next(dj, 1); /* Next entry with table stretch */
1545 } while (res == FR_OK);
1546 }
1547 #endif
1548
1549 if (res == FR_OK) { /* Initialize the SFN entry */
1550 res = move_window(dj->fs, dj->sect);
1551 if (res == FR_OK) {
1552 dir = dj->dir;
1553 mem_set(dir, 0, SZ_DIR); /* Clean the entry */
1554 mem_cpy(dir, dj->fn, 11); /* Put SFN */
1555 #if _USE_LFN
1556 dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
1557 #endif
1558 dj->fs->wflag = 1;
1559 }
1560 }
1561
1562 return res;
1563 }
1564 #endif /* !_FS_READONLY */
1565
1566
1567
1568
1569 /*-----------------------------------------------------------------------*/
1570 /* Remove an object from the directory */
1571 /*-----------------------------------------------------------------------*/
1572 #if !_FS_READONLY && !_FS_MINIMIZE
1573 static
1574 FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
1575 DIR_t *dj /* Directory object pointing the entry to be removed */
1576 )
1577 {
1578 FRESULT res;
1579 #if _USE_LFN /* LFN configuration */
1580 WORD i;
1581
1582 i = dj->index; /* SFN index */
1583 res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
1584 if (res == FR_OK) {
1585 do {
1586 res = move_window(dj->fs, dj->sect);
1587 if (res != FR_OK) break;
1588 *dj->dir = DDE; /* Mark the entry "deleted" */
1589 dj->fs->wflag = 1;
1590 if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
1591 res = dir_next(dj, 0); /* Next entry */
1592 } while (res == FR_OK);
1593 if (res == FR_NO_FILE) res = FR_INT_ERR;
1594 }
1595
1596 #else /* Non LFN configuration */
1597 res = dir_sdi(dj, dj->index);
1598 if (res == FR_OK) {
1599 res = move_window(dj->fs, dj->sect);
1600 if (res == FR_OK) {
1601 *dj->dir = DDE; /* Mark the entry "deleted" */
1602 dj->fs->wflag = 1;
1603 }
1604 }
1605 #endif
1606
1607 return res;
1608 }
1609 #endif /* !_FS_READONLY */
1610
1611
1612
1613
1614 /*-----------------------------------------------------------------------*/
1615 /* Pick a segment and create the object name in directory form */
1616 /*-----------------------------------------------------------------------*/
1617
1618 static
1619 FRESULT create_name (
1620 DIR_t *dj, /* Pointer to the directory object */
1621 const TCHAR **path /* Pointer to pointer to the segment in the path string */
1622 )
1623 {
1624 #ifdef _EXCVT
1625 static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
1626 #endif
1627
1628 #if _USE_LFN /* LFN configuration */
1629 BYTE b, cf;
1630 WCHAR w, *lfn;
1631 UINT i, ni, si, di;
1632 const TCHAR *p;
1633
1634 /* Create LFN in Unicode */
1635 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
1636 lfn = dj->lfn;
1637 si = di = 0;
1638 for (;;) {
1639 w = p[si++]; /* Get a character */
1640 if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
1641 if (di >= _MAX_LFN) /* Reject too long name */
1642 return FR_INVALID_NAME;
1643 #if !_LFN_UNICODE
1644 w &= 0xFF;
1645 if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
1646 b = (BYTE)p[si++]; /* Get 2nd byte */
1647 if (!IsDBCS2(b))
1648 return FR_INVALID_NAME; /* Reject invalid sequence */
1649 w = (w << 8) + b; /* Create a DBC */
1650 }
1651 w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
1652 if (!w) return FR_INVALID_NAME; /* Reject invalid code */
1653 #endif
1654 if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
1655 return FR_INVALID_NAME;
1656 lfn[di++] = w; /* Store the Unicode char */
1657 }
1658 *path = &p[si]; /* Return pointer to the next segment */
1659 cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
1660 #if _FS_RPATH
1661 if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */
1662 (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
1663 lfn[di] = 0;
1664 for (i = 0; i < 11; i++)
1665 dj->fn[i] = (i < di) ? '.' : ' ';
1666 dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
1667 return FR_OK;
1668 }
1669 #endif
1670 while (di) { /* Strip trailing spaces and dots */
1671 w = lfn[di-1];
1672 if (w != ' ' && w != '.') break;
1673 di--;
1674 }
1675 if (!di) return FR_INVALID_NAME; /* Reject nul string */
1676
1677 lfn[di] = 0; /* LFN is created */
1678
1679 /* Create SFN in directory form */
1680 mem_set(dj->fn, ' ', 11);
1681 for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
1682 if (si) cf |= NS_LOSS | NS_LFN;
1683 while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
1684
1685 b = i = 0; ni = 8;
1686 for (;;) {
1687 w = lfn[si++]; /* Get an LFN char */
1688 if (!w) break; /* Break on end of the LFN */
1689 if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
1690 cf |= NS_LOSS | NS_LFN; continue;
1691 }
1692
1693 if (i >= ni || si == di) { /* Extension or end of SFN */
1694 if (ni == 11) { /* Long extension */
1695 cf |= NS_LOSS | NS_LFN; break;
1696 }
1697 if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
1698 if (si > di) break; /* No extension */
1699 si = di; i = 8; ni = 11; /* Enter extension section */
1700 b <<= 2; continue;
1701 }
1702
1703 if (w >= 0x80) { /* Non ASCII char */
1704 #ifdef _EXCVT
1705 w = ff_convert(w, 0); /* Unicode -> OEM code */
1706 if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
1707 #else
1708 w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
1709 #endif
1710 cf |= NS_LFN; /* Force create LFN entry */
1711 }
1712
1713 if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
1714 if (i >= ni - 1) {
1715 cf |= NS_LOSS | NS_LFN; i = ni; continue;
1716 }
1717 dj->fn[i++] = (BYTE)(w >> 8);
1718 } else { /* Single byte char */
1719 if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
1720 w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
1721 } else {
1722 if (IsUpper(w)) { /* ASCII large capital */
1723 b |= 2;
1724 } else {
1725 if (IsLower(w)) { /* ASCII small capital */
1726 b |= 1; w -= 0x20;
1727 }
1728 }
1729 }
1730 }
1731 dj->fn[i++] = (BYTE)w;
1732 }
1733
1734 if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
1735
1736 if (ni == 8) b <<= 2;
1737 if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
1738 cf |= NS_LFN;
1739 if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
1740 if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
1741 if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
1742 }
1743
1744 dj->fn[NS] = cf; /* SFN is created */
1745
1746 return FR_OK;
1747
1748
1749 #else /* Non-LFN configuration */
1750 BYTE b, c, d, *sfn;
1751 UINT ni, si, i;
1752 const char *p;
1753
1754 /* Create file name in directory form */
1755 for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
1756 sfn = dj->fn;
1757 mem_set(sfn, ' ', 11);
1758 si = i = b = 0; ni = 8;
1759 #if _FS_RPATH
1760 if (p[si] == '.') { /* Is this a dot entry? */
1761 for (;;) {
1762 c = (BYTE)p[si++];
1763 if (c != '.' || si >= 3) break;
1764 sfn[i++] = c;
1765 }
1766 if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
1767 *path = &p[si]; /* Return pointer to the next segment */
1768 sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
1769 return FR_OK;
1770 }
1771 #endif
1772 for (;;) {
1773 c = (BYTE)p[si++];
1774 if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
1775 if (c == '.' || i >= ni) {
1776 if (ni != 8 || c != '.') return FR_INVALID_NAME;
1777 i = 8; ni = 11;
1778 b <<= 2; continue;
1779 }
1780 if (c >= 0x80) { /* Extended char? */
1781 b |= 3; /* Eliminate NT flag */
1782 #ifdef _EXCVT
1783 c = excvt[c-0x80]; /* Upper conversion (SBCS) */
1784 #else
1785 #if !_DF1S /* ASCII only cfg */
1786 return FR_INVALID_NAME;
1787 #endif
1788 #endif
1789 }
1790 if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
1791 d = (BYTE)p[si++]; /* Get 2nd byte */
1792 if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
1793 return FR_INVALID_NAME;
1794 sfn[i++] = c;
1795 sfn[i++] = d;
1796 } else { /* Single byte code */
1797 if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
1798 return FR_INVALID_NAME;
1799 if (IsUpper(c)) { /* ASCII large capital? */
1800 b |= 2;
1801 } else {
1802 if (IsLower(c)) { /* ASCII small capital? */
1803 b |= 1; c -= 0x20;
1804 }
1805 }
1806 sfn[i++] = c;
1807 }
1808 }
1809 *path = &p[si]; /* Return pointer to the next segment */
1810 c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
1811
1812 if (!i) return FR_INVALID_NAME; /* Reject nul string */
1813 if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
1814
1815 if (ni == 8) b <<= 2;
1816 if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
1817 if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
1818
1819 sfn[NS] = c; /* Store NT flag, File name is created */
1820
1821 return FR_OK;
1822 #endif
1823 }
1824
1825
1826
1827
1828 /*-----------------------------------------------------------------------*/
1829 /* Get file information from directory entry */
1830 /*-----------------------------------------------------------------------*/
1831 #if _FS_MINIMIZE <= 1
1832 static
1833 void get_fileinfo ( /* No return code */
1834 DIR_t *dj, /* Pointer to the directory object */
1835 FILINFO *fno /* Pointer to the file information to be filled */
1836 )
1837 {
1838 UINT i;
1839 BYTE nt, *dir;
1840 TCHAR *p, c;
1841 p = fno->fname;
1842
1843 if (dj->sect) {
1844 dir = dj->dir;
1845 nt = dir[DIR_NTres]; /* NT flag */
1846 for (i = 0; i < 8; i++) { /* Copy name body */
1847 c = dir[i];
1848 if (c == ' ') break;
1849 if (c == NDDE) c = (TCHAR)DDE;
1850 if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
1851 #if _LFN_UNICODE
1852 if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
1853 c = (c << 8) | dir[++i];
1854 c = ff_convert(c, 1);
1855 if (!c) c = '?';
1856 #endif
1857 *p++ = c;
1858 }
1859 if (dir[8] != ' ') { /* Copy name extension */
1860 *p++ = '.';
1861 for (i = 8; i < 11; i++) {
1862 c = dir[i];
1863 if (c == ' ') break;
1864 if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
1865 #if _LFN_UNICODE
1866 if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
1867 c = (c << 8) | dir[++i];
1868 c = ff_convert(c, 1);
1869 if (!c) c = '?';
1870 #endif
1871 *p++ = c;
1872 }
1873 }
1874 fno->fattrib = dir[DIR_Attr]; /* Attribute */
1875 fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
1876 fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
1877 fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
1878 }
1879 *p = 0; /* Terminate SFN str by a \0 */
1880
1881 #if _USE_LFN
1882 if (fno->lfname && fno->lfsize) {
1883 TCHAR *tp = fno->lfname;
1884 WCHAR w, *lfn;
1885
1886 i = 0;
1887 if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
1888 lfn = dj->lfn;
1889 while ((w = *lfn++) != 0) { /* Get an LFN char */
1890 #if !_LFN_UNICODE
1891 w = ff_convert(w, 0); /* Unicode -> OEM conversion */
1892 if (!w) { i = 0; break; } /* Could not convert, no LFN */
1893 if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
1894 tp[i++] = (TCHAR)(w >> 8);
1895 #endif
1896 if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
1897 tp[i++] = (TCHAR)w;
1898 }
1899
1900 }
1901 tp[i] = 0; /* Terminate the LFN str by a \0 */
1902 }
1903 #endif
1904 }
1905 #endif /* _FS_MINIMIZE <= 1 */
1906
1907
1908
1909
1910 /*-----------------------------------------------------------------------*/
1911 /* Follow a file path */
1912 /*-----------------------------------------------------------------------*/
1913
1914 static
1915 FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
1916 DIR_t *dj, /* Directory object to return last directory and found object */
1917 const TCHAR *path /* Full-path string to find a file or directory */
1918 )
1919 {
1920 FRESULT res;
1921 BYTE *dir, ns;
1922
1923
1924 #if _FS_RPATH
1925 if (*path == '/' || *path == '\\') { /* There is a heading separator */
1926 path++; dj->sclust = 0; /* Strip it and start from the root dir */
1927 } else { /* No heading separator */
1928 dj->sclust = dj->fs->cdir; /* Start from the current dir */
1929 }
1930 #else
1931 if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
1932 path++;
1933 dj->sclust = 0; /* Start from the root dir */
1934 #endif
1935
1936 if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
1937 res = dir_sdi(dj, 0);
1938 dj->dir = 0;
1939
1940 } else { /* Follow path */
1941 for (;;) {
1942 res = create_name(dj, &path); /* Get a segment */
1943 if (res != FR_OK) break;
1944 res = dir_find(dj); /* Find it */
1945 ns = *(dj->fn+NS);
1946 if (res != FR_OK) { /* Failed to find the object */
1947 if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
1948 /* Object not found */
1949 if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
1950 dj->sclust = 0; dj->dir = 0; /* It is the root dir */
1951 res = FR_OK;
1952 if (!(ns & NS_LAST)) continue;
1953 } else { /* Could not find the object */
1954 if (!(ns & NS_LAST)) res = FR_NO_PATH;
1955 }
1956 break;
1957 }
1958 if (ns & NS_LAST) break; /* Last segment match. Function completed. */
1959 dir = dj->dir; /* There is next segment. Follow the sub directory */
1960 if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
1961 res = FR_NO_PATH; break;
1962 }
1963 dj->sclust = LD_CLUST(dir);
1964 }
1965 }
1966
1967 return res;
1968 }
1969
1970
1971
1972
1973 /*-----------------------------------------------------------------------*/
1974 /* Load boot record and check if it is an FAT boot record */
1975 /*-----------------------------------------------------------------------*/
1976
1977 static
1978 BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
1979 FATFS *fs, /* File system object */
1980 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
1981 )
1982 {
1983 if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
1984 return 3;
1985 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
1986 return 2;
1987
1988 if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
1989 return 0;
1990 if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
1991 return 0;
1992
1993 return 1;
1994 }
1995
1996
1997
1998
1999 /*-----------------------------------------------------------------------*/
2000 /* Check if the file system object is valid or not */
2001 /*-----------------------------------------------------------------------*/
2002
2003 static
2004 FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
2005 const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
2006 FATFS **rfs, /* Pointer to pointer to the found file system object */
2007 BYTE chk_wp /* !=0: Check media write protection for write access */
2008 )
2009 {
2010 BYTE fmt, b, *tbl;
2011 UINT vol;
2012 DSTATUS stat;
2013 DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
2014 WORD nrsv;
2015 const TCHAR *p = *path;
2016 FATFS *fs;
2017
2018 /* Get logical drive number from the path name */
2019 vol = p[0] - '0'; /* Is there a drive number? */
2020 if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
2021 p += 2; *path = p; /* Return pointer to the path name */
2022 } else { /* No drive number is given */
2023 #if _FS_RPATH
2024 vol = CurrVol; /* Use current drive */
2025 #else
2026 vol = 0; /* Use drive 0 */
2027 #endif
2028 }
2029
2030 /* Check if the logical drive is valid or not */
2031 if (vol >= _VOLUMES) /* Is the drive number valid? */
2032 return FR_INVALID_DRIVE;
2033 *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
2034 if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
2035
2036 ENTER_FF(fs); /* Lock file system */
2037
2038 if (fs->fs_type) { /* If the logical drive has been mounted */
2039 stat = disk_status(fs->drv);
2040 if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
2041 #if !_FS_READONLY
2042 if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
2043 return FR_WRITE_PROTECTED;
2044 #endif
2045 return FR_OK; /* The file system object is valid */
2046 }
2047 }
2048
2049 /* The logical drive must be mounted. */
2050 /* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */
2051
2052 fs->fs_type = 0; /* Clear the file system object */
2053 fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
2054 stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
2055 if (stat & STA_NOINIT) /* Check if the initialization succeeded */
2056 return FR_NOT_READY; /* Failed to initialize due to no media or hard error */
2057 #if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
2058 if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
2059 return FR_DISK_ERR;
2060 #endif
2061 #if !_FS_READONLY
2062 if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
2063 return FR_WRITE_PROTECTED;
2064 #endif
2065 /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */
2066 fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
2067 if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
2068 /* Check the partition listed in top of the partition table */
2069 tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */
2070 if (tbl[4]) { /* Is the partition existing? */
2071 bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
2072 fmt = check_fs(fs, bsect); /* Check the partition */
2073 }
2074 }
2075 if (fmt == 3) return FR_DISK_ERR;
2076 if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
2077
2078 /* Following code initializes the file system object */
2079
2080 if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
2081 return FR_NO_FILESYSTEM;
2082
2083 fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
2084 if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
2085 fs->fsize = fasize;
2086
2087 fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
2088 if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
2089 fasize *= b; /* Number of sectors for FAT area */
2090
2091 fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
2092 if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
2093
2094 fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
2095 if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
2096
2097 tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
2098 if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
2099
2100 nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
2101 if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
2102
2103 /* Determine the FAT sub type */
2104 sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
2105 if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
2106 nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
2107 if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
2108 fmt = FS_FAT12;
2109 if (nclst >= MIN_FAT16) fmt = FS_FAT16;
2110 if (nclst >= MIN_FAT32) fmt = FS_FAT32;
2111
2112 /* Boundaries and Limits */
2113 fs->n_fatent = nclst + 2; /* Number of FAT entries */
2114 fs->database = bsect + sysect; /* Data start sector */
2115 fs->fatbase = bsect + nrsv; /* FAT start sector */
2116 if (fmt == FS_FAT32) {
2117 if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
2118 fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
2119 szbfat = fs->n_fatent * 4; /* (Required FAT size) */
2120 } else {
2121 if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
2122 fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
2123 szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
2124 fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
2125 }
2126 if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
2127 return FR_NO_FILESYSTEM;
2128
2129 #if !_FS_READONLY
2130 /* Initialize cluster allocation information */
2131 fs->free_clust = 0xFFFFFFFF;
2132 fs->last_clust = 0;
2133
2134 /* Get fsinfo if available */
2135 if (fmt == FS_FAT32) {
2136 fs->fsi_flag = 0;
2137 fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
2138 if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
2139 LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
2140 LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
2141 LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
2142 fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
2143 fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
2144 }
2145 }
2146 #endif
2147 fs->fs_type = fmt; /* FAT sub-type */
2148 fs->id = ++Fsid; /* File system mount ID */
2149 fs->winsect = 0; /* Invalidate sector cache */
2150 fs->wflag = 0;
2151 #if _FS_RPATH
2152 fs->cdir = 0; /* Current directory (root dir) */
2153 #endif
2154 #if _FS_SHARE /* Clear file lock semaphores */
2155 clear_lock(fs);
2156 #endif
2157
2158 return FR_OK;
2159 }
2160
2161
2162
2163
2164 /*-----------------------------------------------------------------------*/
2165 /* Check if the file/dir object is valid or not */
2166 /*-----------------------------------------------------------------------*/
2167
2168 static
2169 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
2170 FATFS *fs, /* Pointer to the file system object */
2171 WORD id /* Member id of the target object to be checked */
2172 )
2173 {
2174 if (!fs || !fs->fs_type || fs->id != id)
2175 return FR_INVALID_OBJECT;
2176
2177 ENTER_FF(fs); /* Lock file system */
2178
2179 if (disk_status(fs->drv) & STA_NOINIT)
2180 return FR_NOT_READY;
2181
2182 return FR_OK;
2183 }
2184
2185
2186
2187
2188 /*--------------------------------------------------------------------------
2189
2190 Public Functions
2191
2192 --------------------------------------------------------------------------*/
2193
2194
2195
2196 /*-----------------------------------------------------------------------*/
2197 /* Mount/Unmount a Logical Drive */
2198 /*-----------------------------------------------------------------------*/
2199
2200 FRESULT f_mount (
2201 BYTE vol, /* Logical drive number to be mounted/unmounted */
2202 FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
2203 )
2204 {
2205 FATFS *rfs;
2206
2207
2208 if (vol >= _VOLUMES) /* Check if the drive number is valid */
2209 return FR_INVALID_DRIVE;
2210 rfs = FatFs[vol]; /* Get current fs object */
2211
2212 if (rfs) {
2213 #if _FS_SHARE
2214 clear_lock(rfs);
2215 #endif
2216 #if _FS_REENTRANT /* Discard sync object of the current volume */
2217 if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
2218 #endif
2219 rfs->fs_type = 0; /* Clear old fs object */
2220 }
2221
2222 if (fs) {
2223 fs->fs_type = 0; /* Clear new fs object */
2224 #if _FS_REENTRANT /* Create sync object for the new volume */
2225 if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
2226 #endif
2227 }
2228 FatFs[vol] = fs; /* Register new fs object */
2229
2230 return FR_OK;
2231 }
2232
2233
2234
2235
2236 /*-----------------------------------------------------------------------*/
2237 /* Open or Create a File */
2238 /*-----------------------------------------------------------------------*/
2239
2240 FRESULT f_open (
2241 FIL_t *fp, /* Pointer to the blank file object */
2242 const TCHAR *path, /* Pointer to the file name */
2243 BYTE mode /* Access mode and file open mode flags */
2244 )
2245 {
2246 FRESULT res;
2247 DIR_t dj;
2248 BYTE *dir;
2249 DEF_NAMEBUF;
2250
2251
2252 fp->fs = 0; /* Clear file object */
2253
2254 #if !_FS_READONLY
2255 mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
2256 res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
2257 #else
2258 mode &= FA_READ;
2259 res = chk_mounted(&path, &dj.fs, 0);
2260 #endif
2261 INIT_BUF(dj);
2262 if (res == FR_OK)
2263 res = follow_path(&dj, path); /* Follow the file path */
2264 dir = dj.dir;
2265
2266 #if !_FS_READONLY /* R/W configuration */
2267 if (res == FR_OK) {
2268 if (!dir) /* Current dir itself */
2269 res = FR_INVALID_NAME;
2270 #if _FS_SHARE
2271 else
2272 res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
2273 #endif
2274 }
2275 /* Create or Open a file */
2276 if (mode & (FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW)) {
2277 DWORD dw, cl;
2278
2279 if (res != FR_OK) { /* No file, create new */
2280 if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
2281 #if _FS_SHARE
2282 res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
2283 #else
2284 res = dir_register(&dj);
2285 #endif
2286 mode |= FA_CREATE_ALWAYS; /* File is created */
2287 dir = dj.dir; /* New entry */
2288 }
2289 else { /* Any object is already existing */
2290 if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
2291 res = FR_DENIED;
2292 } else {
2293 if (mode & FA_CREATE_NEW) /* Cannot create as new file */
2294 res = FR_EXIST;
2295 }
2296 }
2297 if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
2298 dw = get_fattime(); /* Created time */
2299 ST_DWORD(dir+DIR_CrtTime, dw);
2300 dir[DIR_Attr] = 0; /* Reset attribute */
2301 ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
2302 cl = LD_CLUST(dir); /* Get start cluster */
2303 ST_CLUST(dir, 0); /* cluster = 0 */
2304 dj.fs->wflag = 1;
2305 if (cl) { /* Remove the cluster chain if exist */
2306 dw = dj.fs->winsect;
2307 res = remove_chain(dj.fs, cl);
2308 if (res == FR_OK) {
2309 dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
2310 res = move_window(dj.fs, dw);
2311 }
2312 }
2313 }
2314 }
2315 else { /* Open an existing file */
2316 if (res == FR_OK) { /* Follow succeeded */
2317 if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
2318 res = FR_NO_FILE;
2319 } else {
2320 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
2321 res = FR_DENIED;
2322 }
2323 }
2324 }
2325 if (res == FR_OK) {
2326 if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
2327 mode |= FA__WRITTEN;
2328 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
2329 fp->dir_ptr = dir;
2330 #if _FS_SHARE
2331 fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
2332 if (!fp->lockid) res = FR_INT_ERR;
2333 #endif
2334 }
2335
2336 #else /* R/O configuration */
2337 if (res == FR_OK) { /* Follow succeeded */
2338 if (!dir) { /* Current dir itself */
2339 res = FR_INVALID_NAME;
2340 } else {
2341 if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
2342 res = FR_NO_FILE;
2343 }
2344 }
2345 #endif
2346 FREE_BUF();
2347
2348 if (res == FR_OK) {
2349 fp->flag = mode; /* File access mode */
2350 fp->sclust = LD_CLUST(dir); /* File start cluster */
2351 fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
2352 fp->fptr = 0; /* File pointer */
2353 fp->dsect = 0;
2354 #if _USE_FASTSEEK
2355 fp->cltbl = 0; /* Normal seek mode */
2356 #endif
2357 fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
2358 }
2359
2360 LEAVE_FF(dj.fs, res);
2361 }
2362
2363
2364
2365
2366 /*-----------------------------------------------------------------------*/
2367 /* Read File */
2368 /*-----------------------------------------------------------------------*/
2369
2370 FRESULT f_read (
2371 FIL_t *fp, /* Pointer to the file object */
2372 void *buff, /* Pointer to data buffer */
2373 UINT btr, /* Number of bytes to read */
2374 UINT *br /* Pointer to number of bytes read */
2375 )
2376 {
2377 FRESULT res;
2378 DWORD clst, sect, remain;
2379 UINT rcnt, cc;
2380 BYTE csect, *rbuff = (BYTE*)buff;
2381
2382
2383 *br = 0; /* Initialize byte counter */
2384
2385 res = validate(fp->fs, fp->id); /* Check validity */
2386 if (res != FR_OK) LEAVE_FF(fp->fs, res);
2387 if (fp->flag & FA__ERROR) /* Aborted file? */
2388 LEAVE_FF(fp->fs, FR_INT_ERR);
2389 if (!(fp->flag & FA_READ)) /* Check access mode */
2390 LEAVE_FF(fp->fs, FR_DENIED);
2391 remain = fp->fsize - fp->fptr;
2392 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
2393
2394 for ( ; btr; /* Repeat until all data read */
2395 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
2396 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
2397 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
2398 if (!csect) { /* On the cluster boundary? */
2399 if (fp->fptr == 0) { /* On the top of the file? */
2400 clst = fp->sclust; /* Follow from the origin */
2401 } else { /* Middle or end of the file */
2402 #if _USE_FASTSEEK
2403 if (fp->cltbl)
2404 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
2405 else
2406 #endif
2407 clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
2408 }
2409 if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
2410 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2411 fp->clust = clst; /* Update current cluster */
2412 }
2413 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
2414 if (!sect) ABORT(fp->fs, FR_INT_ERR);
2415 sect += csect;
2416 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
2417 if (cc) { /* Read maximum contiguous sectors directly */
2418 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
2419 cc = fp->fs->csize - csect;
2420 if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
2421 ABORT(fp->fs, FR_DISK_ERR);
2422 #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
2423 #if _FS_TINY
2424 if (fp->fs->wflag && fp->fs->winsect - sect < cc)
2425 mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
2426 #else
2427 if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
2428 mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
2429 #endif
2430 #endif
2431 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
2432 continue;
2433 }
2434 #if !_FS_TINY
2435 if (fp->dsect != sect) { /* Load data sector if not in cache */
2436 #if !_FS_READONLY
2437 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
2438 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
2439 ABORT(fp->fs, FR_DISK_ERR);
2440 fp->flag &= ~FA__DIRTY;
2441 }
2442 #endif
2443 if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
2444 ABORT(fp->fs, FR_DISK_ERR);
2445 }
2446 #endif
2447 fp->dsect = sect;
2448 }
2449 rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
2450 if (rcnt > btr) rcnt = btr;
2451 #if _FS_TINY
2452 if (move_window(fp->fs, fp->dsect)) /* Move sector window */
2453 ABORT(fp->fs, FR_DISK_ERR);
2454 mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
2455 #else
2456 mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
2457 #endif
2458 }
2459
2460 LEAVE_FF(fp->fs, FR_OK);
2461 }
2462
2463
2464
2465
2466 #if !_FS_READONLY
2467 /*-----------------------------------------------------------------------*/
2468 /* Write File */
2469 /*-----------------------------------------------------------------------*/
2470
2471 FRESULT f_write (
2472 FIL_t *fp, /* Pointer to the file object */
2473 const void *buff, /* Pointer to the data to be written */
2474 UINT btw, /* Number of bytes to write */
2475 UINT *bw /* Pointer to number of bytes written */
2476 )
2477 {
2478 FRESULT res;
2479 DWORD clst, sect;
2480 UINT wcnt, cc;
2481 const BYTE *wbuff = (BYTE*)buff;
2482 BYTE csect;
2483
2484
2485 *bw = 0; /* Initialize byte counter */
2486
2487 res = validate(fp->fs, fp->id); /* Check validity */
2488 if (res != FR_OK) LEAVE_FF(fp->fs, res);
2489 if (fp->flag & FA__ERROR) /* Aborted file? */
2490 LEAVE_FF(fp->fs, FR_INT_ERR);
2491 if (!(fp->flag & FA_WRITE)) /* Check access mode */
2492 LEAVE_FF(fp->fs, FR_DENIED);
2493 if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
2494
2495 for ( ; btw; /* Repeat until all data written */
2496 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
2497 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
2498 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
2499 if (!csect) { /* On the cluster boundary? */
2500 if (fp->fptr == 0) { /* On the top of the file? */
2501 clst = fp->sclust; /* Follow from the origin */
2502 if (clst == 0) /* When no cluster is allocated, */
2503 fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
2504 } else { /* Middle or end of the file */
2505 #if _USE_FASTSEEK
2506 if (fp->cltbl)
2507 clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
2508 else
2509 #endif
2510 clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
2511 }
2512 if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
2513 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
2514 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2515 fp->clust = clst; /* Update current cluster */
2516 }
2517 #if _FS_TINY
2518 if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
2519 ABORT(fp->fs, FR_DISK_ERR);
2520 #else
2521 if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
2522 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
2523 ABORT(fp->fs, FR_DISK_ERR);
2524 fp->flag &= ~FA__DIRTY;
2525 }
2526 #endif
2527 sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
2528 if (!sect) ABORT(fp->fs, FR_INT_ERR);
2529 sect += csect;
2530 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
2531 if (cc) { /* Write maximum contiguous sectors directly */
2532 if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
2533 cc = fp->fs->csize - csect;
2534 if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
2535 ABORT(fp->fs, FR_DISK_ERR);
2536 #if _FS_TINY
2537 if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
2538 mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
2539 fp->fs->wflag = 0;
2540 }
2541 #else
2542 if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
2543 mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
2544 fp->flag &= ~FA__DIRTY;
2545 }
2546 #endif
2547 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
2548 continue;
2549 }
2550 #if _FS_TINY
2551 if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
2552 if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
2553 fp->fs->winsect = sect;
2554 }
2555 #else
2556 if (fp->dsect != sect) { /* Fill sector cache with file data */
2557 if (fp->fptr < fp->fsize &&
2558 disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
2559 ABORT(fp->fs, FR_DISK_ERR);
2560 }
2561 #endif
2562 fp->dsect = sect;
2563 }
2564 wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
2565 if (wcnt > btw) wcnt = btw;
2566 #if _FS_TINY
2567 if (move_window(fp->fs, fp->dsect)) /* Move sector window */
2568 ABORT(fp->fs, FR_DISK_ERR);
2569 mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
2570 fp->fs->wflag = 1;
2571 #else
2572 mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
2573 fp->flag |= FA__DIRTY;
2574 #endif
2575 }
2576
2577 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
2578 fp->flag |= FA__WRITTEN; /* Set file change flag */
2579
2580 LEAVE_FF(fp->fs, FR_OK);
2581 }
2582
2583
2584
2585
2586 /*-----------------------------------------------------------------------*/
2587 /* Synchronize the File Object */
2588 /*-----------------------------------------------------------------------*/
2589
2590 FRESULT f_sync (
2591 FIL_t *fp /* Pointer to the file object */
2592 )
2593 {
2594 FRESULT res;
2595 DWORD tim;
2596 BYTE *dir;
2597
2598
2599 res = validate(fp->fs, fp->id); /* Check validity of the object */
2600 if (res == FR_OK) {
2601 if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
2602 #if !_FS_TINY /* Write-back dirty buffer */
2603 if (fp->flag & FA__DIRTY) {
2604 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
2605 LEAVE_FF(fp->fs, FR_DISK_ERR);
2606 fp->flag &= ~FA__DIRTY;
2607 }
2608 #endif
2609 /* Update the directory entry */
2610 res = move_window(fp->fs, fp->dir_sect);
2611 if (res == FR_OK) {
2612 dir = fp->dir_ptr;
2613 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
2614 ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
2615 ST_CLUST(dir, fp->sclust); /* Update start cluster */
2616 tim = get_fattime(); /* Update updated time */
2617 ST_DWORD(dir+DIR_WrtTime, tim);
2618 fp->flag &= ~FA__WRITTEN;
2619 fp->fs->wflag = 1;
2620 res = sync(fp->fs);
2621 }
2622 }
2623 }
2624
2625 LEAVE_FF(fp->fs, res);
2626 }
2627
2628 #endif /* !_FS_READONLY */
2629
2630
2631
2632
2633 /*-----------------------------------------------------------------------*/
2634 /* Close File */
2635 /*-----------------------------------------------------------------------*/
2636
2637 FRESULT f_close (
2638 FIL_t *fp /* Pointer to the file object to be closed */
2639 )
2640 {
2641 FRESULT res;
2642
2643 #if _FS_READONLY
2644 FATFS *fs = fp->fs;
2645 res = validate(fs, fp->id);
2646 if (res == FR_OK) fp->fs = 0; /* Discard file object */
2647 LEAVE_FF(fs, res);
2648
2649 #else
2650 res = f_sync(fp); /* Flush cached data */
2651 #if _FS_SHARE
2652 if (res == FR_OK) { /* Decrement open counter */
2653 #if _FS_REENTRANT
2654 res = validate(fp->fs, fp->id);
2655 if (res == FR_OK) {
2656 res = dec_lock(fp->lockid);
2657 unlock_fs(fp->fs, FR_OK);
2658 }
2659 #else
2660 res = dec_lock(fp->lockid);
2661 #endif
2662 }
2663 #endif
2664 if (res == FR_OK) fp->fs = 0; /* Discard file object */
2665 return res;
2666 #endif
2667 }
2668
2669
2670
2671
2672 /*-----------------------------------------------------------------------*/
2673 /* Current Drive/Directory Handlings */
2674 /*-----------------------------------------------------------------------*/
2675
2676 #if _FS_RPATH >= 1
2677
2678 FRESULT f_chdrive (
2679 BYTE drv /* Drive number */
2680 )
2681 {
2682 if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
2683
2684 CurrVol = drv;
2685
2686 return FR_OK;
2687 }
2688
2689
2690
2691 FRESULT f_chdir (
2692 const TCHAR *path /* Pointer to the directory path */
2693 )
2694 {
2695 FRESULT res;
2696 DIR_t dj;
2697 DEF_NAMEBUF;
2698
2699
2700 res = chk_mounted(&path, &dj.fs, 0);
2701 if (res == FR_OK) {
2702 INIT_BUF(dj);
2703 res = follow_path(&dj, path); /* Follow the path */
2704 FREE_BUF();
2705 if (res == FR_OK) { /* Follow completed */
2706 if (!dj.dir) {
2707 dj.fs->cdir = dj.sclust; /* Start directory itself */
2708 } else {
2709 if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
2710 dj.fs->cdir = LD_CLUST(dj.dir);
2711 else
2712 res = FR_NO_PATH; /* Reached but a file */
2713 }
2714 }
2715 if (res == FR_NO_FILE) res = FR_NO_PATH;
2716 }
2717
2718 LEAVE_FF(dj.fs, res);
2719 }
2720
2721
2722 #if _FS_RPATH >= 2
2723 FRESULT f_getcwd (
2724 TCHAR *path, /* Pointer to the directory path */
2725 UINT sz_path /* Size of path */
2726 )
2727 {
2728 FRESULT res;
2729 DIR_t dj;
2730 UINT i, n;
2731 DWORD ccl;
2732 TCHAR *tp;
2733 FILINFO fno;
2734 DEF_NAMEBUF;
2735
2736
2737 *path = 0;
2738 res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */
2739 if (res == FR_OK) {
2740 INIT_BUF(dj);
2741 i = sz_path; /* Bottom of buffer (dir stack base) */
2742 dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
2743 while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
2744 res = dir_sdi(&dj, 1); /* Get parent dir */
2745 if (res != FR_OK) break;
2746 res = dir_read(&dj);
2747 if (res != FR_OK) break;
2748 dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */
2749 res = dir_sdi(&dj, 0);
2750 if (res != FR_OK) break;
2751 do { /* Find the entry links to the child dir */
2752 res = dir_read(&dj);
2753 if (res != FR_OK) break;
2754 if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */
2755 res = dir_next(&dj, 0);
2756 } while (res == FR_OK);
2757 if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
2758 if (res != FR_OK) break;
2759 #if _USE_LFN
2760 fno.lfname = path;
2761 fno.lfsize = i;
2762 #endif
2763 get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
2764 tp = fno.fname;
2765 if (_USE_LFN && *path) tp = path;
2766 for (n = 0; tp[n]; n++) ;
2767 if (i < n + 3) {
2768 res = FR_NOT_ENOUGH_CORE; break;
2769 }
2770 while (n) path[--i] = tp[--n];
2771 path[--i] = '/';
2772 }
2773 tp = path;
2774 if (res == FR_OK) {
2775 *tp++ = '0' + CurrVol; /* Put drive number */
2776 *tp++ = ':';
2777 if (i == sz_path) { /* Root-dir */
2778 *tp++ = '/';
2779 } else { /* Sub-dir */
2780 do /* Add stacked path str */
2781 *tp++ = path[i++];
2782 while (i < sz_path);
2783 }
2784 }
2785 *tp = 0;
2786 FREE_BUF();
2787 }
2788
2789 LEAVE_FF(dj.fs, res);
2790 }
2791 #endif /* _FS_RPATH >= 2 */
2792 #endif /* _FS_RPATH >= 1 */
2793
2794
2795
2796 #if _FS_MINIMIZE <= 2
2797 /*-----------------------------------------------------------------------*/
2798 /* Seek File R/W Pointer */
2799 /*-----------------------------------------------------------------------*/
2800
2801 FRESULT f_lseek (
2802 FIL_t *fp, /* Pointer to the file object */
2803 DWORD ofs /* File pointer from top of file */
2804 )
2805 {
2806 FRESULT res;
2807
2808
2809 res = validate(fp->fs, fp->id); /* Check validity of the object */
2810 if (res != FR_OK) LEAVE_FF(fp->fs, res);
2811 if (fp->flag & FA__ERROR) /* Check abort flag */
2812 LEAVE_FF(fp->fs, FR_INT_ERR);
2813
2814 #if _USE_FASTSEEK
2815 if (fp->cltbl) { /* Fast seek */
2816 DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
2817
2818 if (ofs == CREATE_LINKMAP) { /* Create CLMT */
2819 tbl = fp->cltbl;
2820 tlen = *tbl++; ulen = 2; /* Given table size and required table size */
2821 cl = fp->sclust; /* Top of the chain */
2822 if (cl) {
2823 do {
2824 /* Get a fragment */
2825 tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
2826 do {
2827 pcl = cl; ncl++;
2828 cl = get_fat(fp->fs, cl);
2829 if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
2830 if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2831 } while (cl == pcl + 1);
2832 if (ulen <= tlen) { /* Store the length and top of the fragment */
2833 *tbl++ = ncl; *tbl++ = tcl;
2834 }
2835 } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
2836 }
2837 *fp->cltbl = ulen; /* Number of items used */
2838 if (ulen <= tlen)
2839 *tbl = 0; /* Terminate table */
2840 else
2841 res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
2842
2843 } else { /* Fast seek */
2844 if (ofs > fp->fsize) /* Clip offset at the file size */
2845 ofs = fp->fsize;
2846 fp->fptr = ofs; /* Set file pointer */
2847 if (ofs) {
2848 fp->clust = clmt_clust(fp, ofs - 1);
2849 dsc = clust2sect(fp->fs, fp->clust);
2850 if (!dsc) ABORT(fp->fs, FR_INT_ERR);
2851 dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
2852 if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
2853 #if !_FS_TINY
2854 #if !_FS_READONLY
2855 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
2856 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
2857 ABORT(fp->fs, FR_DISK_ERR);
2858 fp->flag &= ~FA__DIRTY;
2859 }
2860 #endif
2861 if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
2862 ABORT(fp->fs, FR_DISK_ERR);
2863 #endif
2864 fp->dsect = dsc;
2865 }
2866 }
2867 }
2868 } else
2869 #endif
2870
2871 /* Normal Seek */
2872 {
2873 DWORD clst, bcs, nsect, ifptr;
2874
2875 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
2876 #if !_FS_READONLY
2877 && !(fp->flag & FA_WRITE)
2878 #endif
2879 ) ofs = fp->fsize;
2880
2881 ifptr = fp->fptr;
2882 fp->fptr = nsect = 0;
2883 if (ofs) {
2884 bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
2885 if (ifptr > 0 &&
2886 (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
2887 fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
2888 ofs -= fp->fptr;
2889 clst = fp->clust;
2890 } else { /* When seek to back cluster, */
2891 clst = fp->sclust; /* start from the first cluster */
2892 #if !_FS_READONLY
2893 if (clst == 0) { /* If no cluster chain, create a new chain */
2894 clst = create_chain(fp->fs, 0);
2895 if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
2896 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2897 fp->sclust = clst;
2898 }
2899 #endif
2900 fp->clust = clst;
2901 }
2902 if (clst != 0) {
2903 while (ofs > bcs) { /* Cluster following loop */
2904 #if !_FS_READONLY
2905 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
2906 clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
2907 if (clst == 0) { /* When disk gets full, clip file size */
2908 ofs = bcs; break;
2909 }
2910 } else
2911 #endif
2912 clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
2913 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
2914 if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
2915 fp->clust = clst;
2916 fp->fptr += bcs;
2917 ofs -= bcs;
2918 }
2919 fp->fptr += ofs;
2920 if (ofs % SS(fp->fs)) {
2921 nsect = clust2sect(fp->fs, clst); /* Current sector */
2922 if (!nsect) ABORT(fp->fs, FR_INT_ERR);
2923 nsect += ofs / SS(fp->fs);
2924 }
2925 }
2926 }
2927 if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
2928 #if !_FS_TINY
2929 #if !_FS_READONLY
2930 if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
2931 if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
2932 ABORT(fp->fs, FR_DISK_ERR);
2933 fp->flag &= ~FA__DIRTY;
2934 }
2935 #endif
2936 if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
2937 ABORT(fp->fs, FR_DISK_ERR);
2938 #endif
2939 fp->dsect = nsect;
2940 }
2941 #if !_FS_READONLY
2942 if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
2943 fp->fsize = fp->fptr;
2944 fp->flag |= FA__WRITTEN;
2945 }
2946 #endif
2947 }
2948
2949 LEAVE_FF(fp->fs, res);
2950 }
2951
2952
2953
2954 #if _FS_MINIMIZE <= 1
2955 /*-----------------------------------------------------------------------*/
2956 /* Create a Directroy Object */
2957 /*-----------------------------------------------------------------------*/
2958
2959 FRESULT f_opendir (
2960 DIR_t *dj, /* Pointer to directory object to create */
2961 const TCHAR *path /* Pointer to the directory path */
2962 )
2963 {
2964 FRESULT res;
2965 DEF_NAMEBUF;
2966
2967
2968 res = chk_mounted(&path, &dj->fs, 0);
2969 if (res == FR_OK) {
2970 INIT_BUF(*dj);
2971 res = follow_path(dj, path); /* Follow the path to the directory */
2972 FREE_BUF();
2973 if (res == FR_OK) { /* Follow completed */
2974 if (dj->dir) { /* It is not the root dir */
2975 if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
2976 dj->sclust = LD_CLUST(dj->dir);
2977 } else { /* The object is not a directory */
2978 res = FR_NO_PATH;
2979 }
2980 }
2981 if (res == FR_OK) {
2982 dj->id = dj->fs->id;
2983 res = dir_sdi(dj, 0); /* Rewind dir */
2984 }
2985 }
2986 if (res == FR_NO_FILE) res = FR_NO_PATH;
2987 }
2988
2989 LEAVE_FF(dj->fs, res);
2990 }
2991
2992
2993
2994
2995 /*-----------------------------------------------------------------------*/
2996 /* Read Directory Entry in Sequense */
2997 /*-----------------------------------------------------------------------*/
2998
2999 FRESULT f_readdir (
3000 DIR_t *dj, /* Pointer to the open directory object */
3001 FILINFO *fno /* Pointer to file information to return */
3002 )
3003 {
3004 FRESULT res;
3005 DEF_NAMEBUF;
3006
3007 res = validate(dj->fs, dj->id); /* Check validity of the object */
3008 if (res == FR_OK) {
3009 if (!fno) {
3010 res = dir_sdi(dj, 0); /* Rewind the directory object */
3011 } else {
3012 INIT_BUF(*dj);
3013 res = dir_read(dj); /* Read an directory item */
3014 if (res == FR_NO_FILE) { /* Reached end of dir */
3015 dj->sect = 0;
3016 res = FR_OK;
3017 }
3018 if (res == FR_OK) { /* A valid entry is found */
3019 get_fileinfo(dj, fno); /* Get the object information */
3020 res = dir_next(dj, 0); /* Increment index for next */
3021 if (res == FR_NO_FILE) {
3022 dj->sect = 0;
3023 res = FR_OK;
3024 }
3025 }
3026 FREE_BUF();
3027 }
3028 }
3029
3030 LEAVE_FF(dj->fs, res);
3031 }
3032
3033
3034
3035 #if _FS_MINIMIZE == 0
3036 /*-----------------------------------------------------------------------*/
3037 /* Get File Status */
3038 /*-----------------------------------------------------------------------*/
3039
3040 FRESULT f_stat (
3041 const TCHAR *path, /* Pointer to the file path */
3042 FILINFO *fno /* Pointer to file information to return */
3043 )
3044 {
3045 FRESULT res;
3046 DIR_t dj;
3047 DEF_NAMEBUF;
3048
3049
3050 res = chk_mounted(&path, &dj.fs, 0);
3051 if (res == FR_OK) {
3052 INIT_BUF(dj);
3053 res = follow_path(&dj, path); /* Follow the file path */
3054 if (res == FR_OK) { /* Follow completed */
3055 if (dj.dir) /* Found an object */
3056 get_fileinfo(&dj, fno);
3057 else /* It is root dir */
3058 res = FR_INVALID_NAME;
3059 }
3060 FREE_BUF();
3061 }
3062
3063 LEAVE_FF(dj.fs, res);
3064 }
3065
3066
3067
3068 #if !_FS_READONLY
3069 /*-----------------------------------------------------------------------*/
3070 /* Get Number of Free Clusters */
3071 /*-----------------------------------------------------------------------*/
3072
3073 FRESULT f_getfree (
3074 const TCHAR *path, /* Pointer to the logical drive number (root dir) */
3075 DWORD *nclst, /* Pointer to the variable to return number of free clusters */
3076 FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
3077 )
3078 {
3079 FRESULT res;
3080 DWORD n, clst, sect, stat;
3081 UINT i;
3082 BYTE fat, *p;
3083
3084
3085 /* Get drive number */
3086 res = chk_mounted(&path, fatfs, 0);
3087 if (res == FR_OK) {
3088 /* If free_clust is valid, return it without full cluster scan */
3089 if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
3090 *nclst = (*fatfs)->free_clust;
3091 } else {
3092 /* Get number of free clusters */
3093 fat = (*fatfs)->fs_type;
3094 n = 0;
3095 if (fat == FS_FAT12) {
3096 clst = 2;
3097 do {
3098 stat = get_fat(*fatfs, clst);
3099 if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
3100 if (stat == 1) { res = FR_INT_ERR; break; }
3101 if (stat == 0) n++;
3102 } while (++clst < (*fatfs)->n_fatent);
3103 } else {
3104 clst = (*fatfs)->n_fatent;
3105 sect = (*fatfs)->fatbase;
3106 i = 0; p = 0;
3107 do {
3108 if (!i) {
3109 res = move_window(*fatfs, sect++);
3110 if (res != FR_OK) break;
3111 p = (*fatfs)->win;
3112 i = SS(*fatfs);
3113 }
3114 if (fat == FS_FAT16) {
3115 if (LD_WORD(p) == 0) n++;
3116 p += 2; i -= 2;
3117 } else {
3118 if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
3119 p += 4; i -= 4;
3120 }
3121 } while (--clst);
3122 }
3123 (*fatfs)->free_clust = n;
3124 if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
3125 *nclst = n;
3126 }
3127 }
3128 LEAVE_FF(*fatfs, res);
3129 }
3130
3131
3132
3133
3134 /*-----------------------------------------------------------------------*/
3135 /* Truncate File */
3136 /*-----------------------------------------------------------------------*/
3137
3138 FRESULT f_truncate (
3139 FIL_t *fp /* Pointer to the file object */
3140 )
3141 {
3142 FRESULT res;
3143 DWORD ncl;
3144
3145
3146 res = validate(fp->fs, fp->id); /* Check validity of the object */
3147 if (res == FR_OK) {
3148 if (fp->flag & FA__ERROR) { /* Check abort flag */
3149 res = FR_INT_ERR;
3150 } else {
3151 if (!(fp->flag & FA_WRITE)) /* Check access mode */
3152 res = FR_DENIED;
3153 }
3154 }
3155 if (res == FR_OK) {
3156 if (fp->fsize > fp->fptr) {
3157 fp->fsize = fp->fptr; /* Set file size to current R/W point */
3158 fp->flag |= FA__WRITTEN;
3159 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
3160 res = remove_chain(fp->fs, fp->sclust);
3161 fp->sclust = 0;
3162 } else { /* When truncate a part of the file, remove remaining clusters */
3163 ncl = get_fat(fp->fs, fp->clust);
3164 res = FR_OK;
3165 if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
3166 if (ncl == 1) res = FR_INT_ERR;
3167 if (res == FR_OK && ncl < fp->fs->n_fatent) {
3168 res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
3169 if (res == FR_OK) res = remove_chain(fp->fs, ncl);
3170 }
3171 }
3172 }
3173 if (res != FR_OK) fp->flag |= FA__ERROR;
3174 }
3175
3176 LEAVE_FF(fp->fs, res);
3177 }
3178
3179
3180
3181
3182 /*-----------------------------------------------------------------------*/
3183 /* Delete a File or Directory */
3184 /*-----------------------------------------------------------------------*/
3185
3186 FRESULT f_unlink (
3187 const TCHAR *path /* Pointer to the file or directory path */
3188 )
3189 {
3190 FRESULT res;
3191 DIR_t dj, sdj;
3192 BYTE *dir;
3193 DWORD dclst;
3194 DEF_NAMEBUF;
3195
3196
3197 res = chk_mounted(&path, &dj.fs, 1);
3198 if (res == FR_OK) {
3199 INIT_BUF(dj);
3200 res = follow_path(&dj, path); /* Follow the file path */
3201 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
3202 res = FR_INVALID_NAME; /* Cannot remove dot entry */
3203 #if _FS_SHARE
3204 if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
3205 #endif
3206 if (res == FR_OK) { /* The object is accessible */
3207 dir = dj.dir;
3208 if (!dir) {
3209 res = FR_INVALID_NAME; /* Cannot remove the start directory */
3210 } else {
3211 if (dir[DIR_Attr] & AM_RDO)
3212 res = FR_DENIED; /* Cannot remove R/O object */
3213 }
3214 dclst = LD_CLUST(dir);
3215 if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
3216 if (dclst < 2) {
3217 res = FR_INT_ERR;
3218 } else {
3219 mem_cpy(&sdj, &dj, sizeof(DIR_t)); /* Check if the sub-dir is empty or not */
3220 sdj.sclust = dclst;
3221 res = dir_sdi(&sdj, 2); /* Exclude dot entries */
3222 if (res == FR_OK) {
3223 res = dir_read(&sdj);
3224 if (res == FR_OK /* Not empty dir */
3225 #if _FS_RPATH
3226 || dclst == sdj.fs->cdir /* Current dir */
3227 #endif
3228 ) res = FR_DENIED;
3229 if (res == FR_NO_FILE) res = FR_OK; /* Empty */
3230 }
3231 }
3232 }
3233 if (res == FR_OK) {
3234 res = dir_remove(&dj); /* Remove the directory entry */
3235 if (res == FR_OK) {
3236 if (dclst) /* Remove the cluster chain if exist */
3237 res = remove_chain(dj.fs, dclst);
3238 if (res == FR_OK) res = sync(dj.fs);
3239 }
3240 }
3241 }
3242 FREE_BUF();
3243 }
3244 LEAVE_FF(dj.fs, res);
3245 }
3246
3247
3248
3249
3250 /*-----------------------------------------------------------------------*/
3251 /* Create a Directory */
3252 /*-----------------------------------------------------------------------*/
3253
3254 FRESULT f_mkdir (
3255 const TCHAR *path /* Pointer to the directory path */
3256 )
3257 {
3258 FRESULT res;
3259 DIR_t dj;
3260 BYTE *dir, n;
3261 DWORD dsc, dcl, pcl, tim = get_fattime();
3262 DEF_NAMEBUF;
3263
3264
3265 res = chk_mounted(&path, &dj.fs, 1);
3266 if (res == FR_OK) {
3267 INIT_BUF(dj);
3268 res = follow_path(&dj, path); /* Follow the file path */
3269 if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
3270 if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
3271 res = FR_INVALID_NAME;
3272 if (res == FR_NO_FILE) { /* Can create a new directory */
3273 dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
3274 res = FR_OK;
3275 if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
3276 if (dcl == 1) res = FR_INT_ERR;
3277 if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
3278 if (res == FR_OK) /* Flush FAT */
3279 res = move_window(dj.fs, 0);
3280 if (res == FR_OK) { /* Initialize the new directory table */
3281 dsc = clust2sect(dj.fs, dcl);
3282 dir = dj.fs->win;
3283 mem_set(dir, 0, SS(dj.fs));
3284 mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
3285 dir[DIR_Name] = '.';
3286 dir[DIR_Attr] = AM_DIR;
3287 ST_DWORD(dir+DIR_WrtTime, tim);
3288 ST_CLUST(dir, dcl);
3289 mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
3290 dir[33] = '.'; pcl = dj.sclust;
3291 if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
3292 pcl = 0;
3293 ST_CLUST(dir+SZ_DIR, pcl);
3294 for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
3295 dj.fs->winsect = dsc++;
3296 dj.fs->wflag = 1;
3297 res = move_window(dj.fs, 0);
3298 if (res != FR_OK) break;
3299 mem_set(dir, 0, SS(dj.fs));
3300 }
3301 }
3302 if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
3303 if (res != FR_OK) {
3304 remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
3305 } else {
3306 dir = dj.dir;
3307 dir[DIR_Attr] = AM_DIR; /* Attribute */
3308 ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
3309 ST_CLUST(dir, dcl); /* Table start cluster */
3310 dj.fs->wflag = 1;
3311 res = sync(dj.fs);
3312 }
3313 }
3314 FREE_BUF();
3315 }
3316
3317 LEAVE_FF(dj.fs, res);
3318 }
3319
3320
3321
3322
3323 /*-----------------------------------------------------------------------*/
3324 /* Change Attribute */
3325 /*-----------------------------------------------------------------------*/
3326
3327 FRESULT f_chmod (
3328 const TCHAR *path, /* Pointer to the file path */
3329 BYTE value, /* Attribute bits */
3330 BYTE mask /* Attribute mask to change */
3331 )
3332 {
3333 FRESULT res;
3334 DIR_t dj;
3335 BYTE *dir;
3336 DEF_NAMEBUF;
3337
3338
3339 res = chk_mounted(&path, &dj.fs, 1);
3340 if (res == FR_OK) {
3341 INIT_BUF(dj);
3342 res = follow_path(&dj, path); /* Follow the file path */
3343 FREE_BUF();
3344 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
3345 res = FR_INVALID_NAME;
3346 if (res == FR_OK) {
3347 dir = dj.dir;
3348 if (!dir) { /* Is it a root directory? */
3349 res = FR_INVALID_NAME;
3350 } else { /* File or sub directory */
3351 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
3352 dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
3353 dj.fs->wflag = 1;
3354 res = sync(dj.fs);
3355 }
3356 }
3357 }
3358
3359 LEAVE_FF(dj.fs, res);
3360 }
3361
3362
3363
3364
3365 /*-----------------------------------------------------------------------*/
3366 /* Change Timestamp */
3367 /*-----------------------------------------------------------------------*/
3368
3369 FRESULT f_utime (
3370 const TCHAR *path, /* Pointer to the file/directory name */
3371 const FILINFO *fno /* Pointer to the time stamp to be set */
3372 )
3373 {
3374 FRESULT res;
3375 DIR_t dj;
3376 BYTE *dir;
3377 DEF_NAMEBUF;
3378
3379
3380 res = chk_mounted(&path, &dj.fs, 1);
3381 if (res == FR_OK) {
3382 INIT_BUF(dj);
3383 res = follow_path(&dj, path); /* Follow the file path */
3384 FREE_BUF();
3385 if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
3386 res = FR_INVALID_NAME;
3387 if (res == FR_OK) {
3388 dir = dj.dir;
3389 if (!dir) { /* Root directory */
3390 res = FR_INVALID_NAME;
3391 } else { /* File or sub-directory */
3392 ST_WORD(dir+DIR_WrtTime, fno->ftime);
3393 ST_WORD(dir+DIR_WrtDate, fno->fdate);
3394 dj.fs->wflag = 1;
3395 res = sync(dj.fs);
3396 }
3397 }
3398 }
3399
3400 LEAVE_FF(dj.fs, res);
3401 }
3402
3403
3404
3405
3406 /*-----------------------------------------------------------------------*/
3407 /* Rename File/Directory */
3408 /*-----------------------------------------------------------------------*/
3409
3410 FRESULT f_rename (
3411 const TCHAR *path_old, /* Pointer to the old name */
3412 const TCHAR *path_new /* Pointer to the new name */
3413 )
3414 {
3415 FRESULT res;
3416 DIR_t djo, djn;
3417 BYTE buf[21], *dir;
3418 DWORD dw;
3419 DEF_NAMEBUF;
3420
3421
3422 res = chk_mounted(&path_old, &djo.fs, 1);
3423 if (res == FR_OK) {
3424 djn.fs = djo.fs;
3425 INIT_BUF(djo);
3426 res = follow_path(&djo, path_old); /* Check old object */
3427 if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
3428 res = FR_INVALID_NAME;
3429 #if _FS_SHARE
3430 if (res == FR_OK) res = chk_lock(&djo, 2);
3431 #endif
3432 if (res == FR_OK) { /* Old object is found */
3433 if (!djo.dir) { /* Is root dir? */
3434 res = FR_NO_FILE;
3435 } else {
3436 mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
3437 mem_cpy(&djn, &djo, sizeof(DIR_t)); /* Check new object */
3438 res = follow_path(&djn, path_new);
3439 if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
3440 if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
3441 /* Start critical section that any interruption or error can cause cross-link */
3442 res = dir_register(&djn); /* Register the new entry */
3443 if (res == FR_OK) {
3444 dir = djn.dir; /* Copy object information except for name */
3445 mem_cpy(dir+13, buf+2, 19);
3446 dir[DIR_Attr] = buf[0] | AM_ARC;
3447 djo.fs->wflag = 1;
3448 if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
3449 dw = clust2sect(djn.fs, LD_CLUST(dir));
3450 if (!dw) {
3451 res = FR_INT_ERR;
3452 } else {
3453 res = move_window(djn.fs, dw);
3454 dir = djn.fs->win+SZ_DIR; /* .. entry */
3455 if (res == FR_OK && dir[1] == '.') {
3456 dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
3457 ST_CLUST(dir, dw);
3458 djn.fs->wflag = 1;
3459 }
3460 }
3461 }
3462 if (res == FR_OK) {
3463 res = dir_remove(&djo); /* Remove old entry */
3464 if (res == FR_OK)
3465 res = sync(djo.fs);
3466 }
3467 }
3468 /* End critical section */
3469 }
3470 }
3471 }
3472 FREE_BUF();
3473 }
3474 LEAVE_FF(djo.fs, res);
3475 }
3476
3477 #endif /* !_FS_READONLY */
3478 #endif /* _FS_MINIMIZE == 0 */
3479 #endif /* _FS_MINIMIZE <= 1 */
3480 #endif /* _FS_MINIMIZE <= 2 */
3481
3482
3483
3484 /*-----------------------------------------------------------------------*/
3485 /* Forward data to the stream directly (available on only tiny cfg) */
3486 /*-----------------------------------------------------------------------*/
3487 #if _USE_FORWARD && _FS_TINY
3488
3489 FRESULT f_forward (
3490 FIL_t *fp, /* Pointer to the file object */
3491 UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
3492 UINT btr, /* Number of bytes to forward */
3493 UINT *bf /* Pointer to number of bytes forwarded */
3494 )
3495 {
3496 FRESULT res;
3497 DWORD remain, clst, sect;
3498 UINT rcnt;
3499 BYTE csect;
3500
3501
3502 *bf = 0; /* Initialize byte counter */
3503
3504 res = validate(fp->fs, fp->id); /* Check validity of the object */
3505 if (res != FR_OK) LEAVE_FF(fp->fs, res);
3506 if (fp->flag & FA__ERROR) /* Check error flag */
3507 LEAVE_FF(fp->fs, FR_INT_ERR);
3508 if (!(fp->flag & FA_READ)) /* Check access mode */
3509 LEAVE_FF(fp->fs, FR_DENIED);
3510
3511 remain = fp->fsize - fp->fptr;
3512 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
3513
3514 for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
3515 fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
3516 csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
3517 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
3518 if (!csect) { /* On the cluster boundary? */
3519 clst = (fp->fptr == 0) ? /* On the top of the file? */
3520 fp->sclust : get_fat(fp->fs, fp->clust);
3521 if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
3522 if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
3523 fp->clust = clst; /* Update current cluster */
3524 }
3525 }
3526 sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
3527 if (!sect) ABORT(fp->fs, FR_INT_ERR);
3528 sect += csect;
3529 if (move_window(fp->fs, sect)) /* Move sector window */
3530 ABORT(fp->fs, FR_DISK_ERR);
3531 fp->dsect = sect;
3532 rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
3533 if (rcnt > btr) rcnt = btr;
3534 rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
3535 if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
3536 }
3537
3538 LEAVE_FF(fp->fs, FR_OK);
3539 }
3540 #endif /* _USE_FORWARD */
3541
3542
3543
3544 #if _USE_MKFS && !_FS_READONLY
3545 /*-----------------------------------------------------------------------*/
3546 /* Create File System on the Drive */
3547 /*-----------------------------------------------------------------------*/
3548 #define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
3549 #define N_FATS 1 /* Number of FAT copies (1 or 2) */
3550
3551
3552 FRESULT f_mkfs (
3553 BYTE drv, /* Logical drive number */
3554 BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
3555 UINT au /* Allocation unit size [bytes] */
3556 )
3557 {
3558 static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
3559 static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
3560 BYTE fmt, md, *tbl;
3561 DWORD n_clst, vs, n, wsect;
3562 UINT i;
3563 DWORD b_vol, b_fat, b_dir, b_data; /* Offset (LBA) */
3564 DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
3565 FATFS *fs;
3566 DSTATUS stat;
3567
3568
3569 /* Check mounted drive and clear work area */
3570 if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
3571 fs = FatFs[drv];
3572 if (!fs) return FR_NOT_ENABLED;
3573 fs->fs_type = 0;
3574 drv = LD2PD(drv);
3575
3576 /* Get disk statics */
3577 stat = disk_initialize(drv);
3578 if (stat & STA_NOINIT) return FR_NOT_READY;
3579 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
3580 #if _MAX_SS != 512 /* Get disk sector size */
3581 if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK)
3582 return FR_DISK_ERR;
3583 #endif
3584 if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
3585 return FR_DISK_ERR;
3586 b_vol = (sfd) ? 0 : 63; /* Volume start sector */
3587 n_vol -= b_vol;
3588 if (au & (au - 1)) au = 0; /* Check validity of the AU size */
3589 if (!au) { /* AU auto selection */
3590 vs = n_vol / (2000 / (SS(fs) / 512));
3591 for (i = 0; vs < vst[i]; i++) ;
3592 au = cst[i];
3593 }
3594 au /= SS(fs); /* Number of sectors per cluster */
3595 if (au == 0) au = 1;
3596 if (au > 128) au = 128;
3597
3598 /* Pre-compute number of clusters and FAT syb-type */
3599 n_clst = n_vol / au;
3600 fmt = FS_FAT12;
3601 if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
3602 if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
3603
3604 /* Determine offset and size of FAT structure */
3605 if (fmt == FS_FAT32) {
3606 n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
3607 n_rsv = 32;
3608 n_dir = 0;
3609 } else {
3610 n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
3611 n_fat = (n_fat + SS(fs) - 1) / SS(fs);
3612 n_rsv = 1;
3613 n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
3614 }
3615 b_fat = b_vol + n_rsv; /* FAT area start sector */
3616 b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
3617 b_data = b_dir + n_dir; /* Data area start sector */
3618 if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
3619
3620 /* Align data start sector to erase block boundary (for flash memory media) */
3621 if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
3622 n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
3623 n = (n - b_data) / N_FATS;
3624 if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
3625 n_rsv += n;
3626 b_fat += n;
3627 } else { /* FAT12/16: Expand FAT size */
3628 n_fat += n;
3629 }
3630
3631 /* Determine number of clusters and final check of validity of the FAT sub-type */
3632 n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
3633 if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
3634 || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
3635 return FR_MKFS_ABORTED;
3636
3637 /* Create partition table if required */
3638 if (sfd) { /* No patition table (SFD) */
3639 md = 0xF0;
3640 } else { /* With patition table (FDISK) */
3641 DWORD n_disk = b_vol + n_vol;
3642
3643 mem_set(fs->win, 0, SS(fs));
3644 tbl = fs->win+MBR_Table;
3645 ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
3646 if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
3647 n_disk = n_disk / 63 / 255;
3648 tbl[7] = (BYTE)n_disk;
3649 tbl[6] = (BYTE)((n_disk >> 2) | 63);
3650 } else {
3651 ST_WORD(&tbl[6], 0xFFFF); /* CHS saturated */
3652 }
3653 tbl[5] = 254;
3654 if (fmt != FS_FAT32) /* System ID */
3655 tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
3656 else
3657 tbl[4] = 0x0c;
3658 ST_DWORD(tbl+8, 63); /* Partition start in LBA */
3659 ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
3660 ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
3661 if (disk_write(drv, fs->win, 0, 1) != RES_OK) /* Put the MBR into first physical sector */
3662 return FR_DISK_ERR;
3663 md = 0xF8;
3664 }
3665
3666 /* Create volume boot record */
3667 tbl = fs->win; /* Clear sector */
3668 mem_set(tbl, 0, SS(fs));
3669 mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
3670 i = SS(fs); /* Sector size */
3671 ST_WORD(tbl+BPB_BytsPerSec, i);
3672 tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
3673 ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
3674 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
3675 i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
3676 ST_WORD(tbl+BPB_RootEntCnt, i);
3677 if (n_vol < 0x10000) { /* Number of total sectors */
3678 ST_WORD(tbl+BPB_TotSec16, n_vol);
3679 } else {
3680 ST_DWORD(tbl+BPB_TotSec32, n_vol);
3681 }
3682 tbl[BPB_Media] = md; /* Media descriptor */
3683 ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
3684 ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
3685 ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
3686 n = get_fattime(); /* Use current time as VSN */
3687 if (fmt == FS_FAT32) {
3688 ST_DWORD(tbl+BS_VolID32, n); /* VSN */
3689 ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
3690 ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
3691 ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
3692 ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
3693 tbl[BS_DrvNum32] = 0x80; /* Drive number */
3694 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
3695 mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
3696 } else {
3697 ST_DWORD(tbl+BS_VolID, n); /* VSN */
3698 ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
3699 tbl[BS_DrvNum] = 0x80; /* Drive number */
3700 tbl[BS_BootSig] = 0x29; /* Extended boot signature */
3701 mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
3702 }
3703 ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
3704 if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Write VBR */
3705 return FR_DISK_ERR;
3706 if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
3707 disk_write(drv, tbl, b_vol + 6, 1);
3708
3709 /* Initialize FAT area */
3710 wsect = b_fat;
3711 for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
3712 mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
3713 n = md; /* Media descriptor byte */
3714 if (fmt != FS_FAT32) {
3715 n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
3716 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
3717 } else {
3718 n |= 0xFFFFFF00;
3719 ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
3720 ST_DWORD(tbl+4, 0xFFFFFFFF);
3721 ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
3722 }
3723 if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
3724 return FR_DISK_ERR;
3725 mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
3726 for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
3727 if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
3728 return FR_DISK_ERR;
3729 }
3730 }
3731
3732 /* Initialize root directory */
3733 i = (fmt == FS_FAT32) ? au : n_dir;
3734 do {
3735 if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
3736 return FR_DISK_ERR;
3737 } while (--i);
3738
3739 #if _USE_ERASE /* Erase data area if needed */
3740 {
3741 DWORD eb[2];
3742
3743 eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
3744 disk_ioctl(drv, CTRL_ERASE_SECTOR, eb);
3745 }
3746 #endif
3747
3748 /* Create FSInfo if needed */
3749 if (fmt == FS_FAT32) {
3750 ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
3751 ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
3752 ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
3753 ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
3754 ST_WORD(tbl+BS_55AA, 0xAA55);
3755 disk_write(drv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
3756 disk_write(drv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
3757 }
3758
3759 return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
3760 }
3761
3762 #endif /* _USE_MKFS && !_FS_READONLY */
3763
3764
3765
3766
3767 #if _USE_STRFUNC
3768 /*-----------------------------------------------------------------------*/
3769 /* Get a string from the file */
3770 /*-----------------------------------------------------------------------*/
3771 TCHAR* f_gets (
3772 TCHAR* buff, /* Pointer to the string buffer to read */
3773 int len, /* Size of string buffer (characters) */
3774 FIL_t* fil /* Pointer to the file object */
3775 )
3776 {
3777 int n = 0;
3778 TCHAR c, *p = buff;
3779 BYTE s[2];
3780 UINT rc;
3781
3782
3783 while (n < len - 1) { /* Read bytes until buffer gets filled */
3784 f_read(fil, s, 1, &rc);
3785 if (rc != 1) break; /* Break on EOF or error */
3786 c = s[0];
3787 #if _LFN_UNICODE /* Read a character in UTF-8 encoding */
3788 if (c >= 0x80) {
3789 if (c < 0xC0) continue; /* Skip stray trailer */
3790 if (c < 0xE0) { /* Two-byte sequense */
3791 f_read(fil, s, 1, &rc);
3792 if (rc != 1) break;
3793 c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
3794 if (c < 0x80) c = '?';
3795 } else {
3796 if (c < 0xF0) { /* Three-byte sequense */
3797 f_read(fil, s, 2, &rc);
3798 if (rc != 2) break;
3799 c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
3800 if (c < 0x800) c = '?';
3801 } else { /* Reject four-byte sequense */
3802 c = '?';
3803 }
3804 }
3805 }
3806 #endif
3807 #if _USE_STRFUNC >= 2
3808 if (c == '\r') continue; /* Strip '\r' */
3809 #endif
3810 *p++ = c;
3811 n++;
3812 if (c == '\n') break; /* Break on EOL */
3813 }
3814 *p = 0;
3815 return n ? buff : 0; /* When no data read (eof or error), return with error. */
3816 }
3817
3818
3819
3820 #if !_FS_READONLY
3821 #include <stdarg.h>
3822 /*-----------------------------------------------------------------------*/
3823 /* Put a character to the file */
3824 /*-----------------------------------------------------------------------*/
3825 int f_putc (
3826 TCHAR c, /* A character to be output */
3827 FIL_t* fil /* Pointer to the file object */
3828 )
3829 {
3830 UINT bw, btw;
3831 BYTE s[3];
3832
3833
3834 #if _USE_STRFUNC >= 2
3835 if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
3836 #endif
3837
3838 #if _LFN_UNICODE /* Write the character in UTF-8 encoding */
3839 if (c < 0x80) { /* 7-bit */
3840 s[0] = (BYTE)c;
3841 btw = 1;
3842 } else {
3843 if (c < 0x800) { /* 11-bit */
3844 s[0] = (BYTE)(0xC0 | (c >> 6));
3845 s[1] = (BYTE)(0x80 | (c & 0x3F));
3846 btw = 2;
3847 } else { /* 16-bit */
3848 s[0] = (BYTE)(0xE0 | (c >> 12));
3849 s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
3850 s[2] = (BYTE)(0x80 | (c & 0x3F));
3851 btw = 3;
3852 }
3853 }
3854 #else /* Write the character without conversion */
3855 s[0] = (BYTE)c;
3856 btw = 1;
3857 #endif
3858 f_write(fil, s, btw, &bw); /* Write the char to the file */
3859 return (bw == btw) ? 1 : EOF; /* Return the result */
3860 }
3861
3862
3863
3864
3865 /*-----------------------------------------------------------------------*/
3866 /* Put a string to the file */
3867 /*-----------------------------------------------------------------------*/
3868 int f_puts (
3869 const TCHAR* str, /* Pointer to the string to be output */
3870 FIL_t* fil /* Pointer to the file object */
3871 )
3872 {
3873 int n;
3874
3875
3876 for (n = 0; *str; str++, n++) {
3877 if (f_putc(*str, fil) == EOF) return EOF;
3878 }
3879 return n;
3880 }
3881
3882
3883
3884
3885 /*-----------------------------------------------------------------------*/
3886 /* Put a formatted string to the file */
3887 /*-----------------------------------------------------------------------*/
3888 int f_printf (
3889 FIL_t* fil, /* Pointer to the file object */
3890 const TCHAR* str, /* Pointer to the format string */
3891 ... /* Optional arguments... */
3892 )
3893 {
3894 va_list arp;
3895 BYTE f, r;
3896 UINT i, j, w;
3897 ULONG v;
3898 TCHAR c, d, s[16], *p;
3899 int res, cc;
3900
3901
3902 va_start(arp, str);
3903
3904 for (cc = res = 0; cc != EOF; res += cc) {
3905 c = *str++;
3906 if (c == 0) break; /* End of string */
3907 if (c != '%') { /* Non escape character */
3908 cc = f_putc(c, fil);
3909 if (cc != EOF) cc = 1;
3910 continue;
3911 }
3912 w = f = 0;
3913 c = *str++;
3914 if (c == '0') { /* Flag: '0' padding */
3915 f = 1; c = *str++;
3916 } else {
3917 if (c == '-') { /* Flag: left justified */
3918 f = 2; c = *str++;
3919 }
3920 }
3921 while (IsDigit(c)) { /* Precision */
3922 w = w * 10 + c - '0';
3923 c = *str++;
3924 }
3925 if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
3926 f |= 4; c = *str++;
3927 }
3928 if (!c) break;
3929 d = c;
3930 if (IsLower(d)) d -= 0x20;
3931 switch (d) { /* Type is... */
3932 case 'S' : /* String */
3933 p = va_arg(arp, TCHAR*);
3934 for (j = 0; p[j]; j++) ;
3935 res = 0;
3936 while (!(f & 2) && j++ < w) res += (cc = f_putc(' ', fil));
3937 res += (cc = f_puts(p, fil));
3938 while (j++ < w) res += (cc = f_putc(' ', fil));
3939 if (cc != EOF) cc = res;
3940 continue;
3941 case 'C' : /* Character */
3942 cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
3943 case 'B' : /* Binary */
3944 r = 2; break;
3945 case 'O' : /* Octal */
3946 r = 8; break;
3947 case 'D' : /* Signed decimal */
3948 case 'U' : /* Unsigned decimal */
3949 r = 10; break;
3950 case 'X' : /* Hexdecimal */
3951 r = 16; break;
3952 default: /* Unknown type (passthrough) */
3953 cc = f_putc(c, fil); continue;
3954 }
3955
3956 /* Get an argument and put it in numeral */
3957 v = (f & 4) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
3958 if (d == 'D' && (v & 0x80000000)) {
3959 v = 0 - v;
3960 f |= 8;
3961 }
3962 i = 0;
3963 do {
3964 d = (TCHAR)(v % r); v /= r;
3965 if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
3966 s[i++] = d + '0';
3967 } while (v && i < sizeof(s) / sizeof(s[0]));
3968 if (f & 8) s[i++] = '-';
3969 j = i; d = (f & 1) ? '0' : ' ';
3970 res = 0;
3971 while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
3972 do res += (cc = f_putc(s[--i], fil)); while(i);
3973 while (j++ < w) res += (cc = f_putc(' ', fil));
3974 if (cc != EOF) cc = res;
3975 }
3976
3977 va_end(arp);
3978 return (cc == EOF) ? cc : res;
3979 }
3980
3981 #endif /* !_FS_READONLY */
3982 #endif /* _USE_STRFUNC */
Unnamed repository; edit this file 'description' to name the repository.