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53668523 | 1 | /*----------------------------------------------------------------------------/\r |
70702af1 | 2 | / FatFs - Generic FAT file system module R0.12b /\r |
53668523 | 3 | /-----------------------------------------------------------------------------/\r |
53668523 | 4 | /\r |
70702af1 | 5 | / Copyright (C) 2016, ChaN, all right reserved.\r |
53668523 | 6 | /\r |
70702af1 L |
7 | / FatFs module is an open source software. Redistribution and use of FatFs in\r |
8 | / source and binary forms, with or without modification, are permitted provided\r | |
9 | / that the following condition is met:\r | |
53668523 | 10 | \r |
70702af1 L |
11 | / 1. Redistributions of source code must retain the above copyright notice,\r |
12 | / this condition and the following disclaimer.\r | |
13 | /\r | |
14 | / This software is provided by the copyright holder and contributors "AS IS"\r | |
15 | / and any warranties related to this software are DISCLAIMED.\r | |
16 | / The copyright owner or contributors be NOT LIABLE for any damages caused\r | |
17 | / by use of this software.\r | |
18 | /----------------------------------------------------------------------------*/\r | |
53668523 L |
19 | \r |
20 | \r | |
70702af1 L |
21 | #include "ff.h" /* Declarations of FatFs API */\r |
22 | #include "diskio.h" /* Declarations of device I/O functions */\r | |
53668523 L |
23 | \r |
24 | \r | |
25 | /*--------------------------------------------------------------------------\r | |
26 | \r | |
27 | Module Private Definitions\r | |
28 | \r | |
29 | ---------------------------------------------------------------------------*/\r | |
30 | \r | |
70702af1 | 31 | #if _FATFS != 68020 /* Revision ID */\r |
53668523 L |
32 | #error Wrong include file (ff.h).\r |
33 | #endif\r | |
34 | \r | |
35 | \r | |
70702af1 L |
36 | #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }\r |
37 | \r | |
38 | \r | |
53668523 L |
39 | /* Reentrancy related */\r |
40 | #if _FS_REENTRANT\r | |
41 | #if _USE_LFN == 1\r | |
7b78a5a2 | 42 | #error Static LFN work area cannot be used at thread-safe configuration\r |
53668523 L |
43 | #endif\r |
44 | #define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }\r | |
45 | #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }\r | |
46 | #else\r | |
47 | #define ENTER_FF(fs)\r | |
48 | #define LEAVE_FF(fs, res) return res\r | |
49 | #endif\r | |
50 | \r | |
53668523 L |
51 | \r |
52 | \r | |
53 | /* Definitions of sector size */\r | |
54 | #if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)\r | |
7b78a5a2 | 55 | #error Wrong sector size configuration\r |
53668523 L |
56 | #endif\r |
57 | #if _MAX_SS == _MIN_SS\r | |
58 | #define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */\r | |
59 | #else\r | |
60 | #define SS(fs) ((fs)->ssize) /* Variable sector size */\r | |
61 | #endif\r | |
62 | \r | |
63 | \r | |
70702af1 L |
64 | /* Timestamp */\r |
65 | #if _FS_NORTC == 1\r | |
66 | #if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31\r | |
67 | #error Invalid _FS_NORTC settings\r | |
68 | #endif\r | |
69 | #define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)\r | |
7b78a5a2 L |
70 | #else\r |
71 | #define GET_FATTIME() get_fattime()\r | |
72 | #endif\r | |
73 | \r | |
74 | \r | |
70702af1 L |
75 | /* File lock controls */\r |
76 | #if _FS_LOCK != 0\r | |
53668523 | 77 | #if _FS_READONLY\r |
7b78a5a2 | 78 | #error _FS_LOCK must be 0 at read-only configuration\r |
53668523 L |
79 | #endif\r |
80 | typedef struct {\r | |
81 | FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */\r | |
82 | DWORD clu; /* Object ID 2, directory (0:root) */\r | |
70702af1 | 83 | DWORD ofs; /* Object ID 3, directory offset */\r |
53668523 L |
84 | WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */\r |
85 | } FILESEM;\r | |
86 | #endif\r | |
87 | \r | |
88 | \r | |
89 | \r | |
70702af1 | 90 | /* DBCS code ranges and SBCS upper conversion tables */\r |
53668523 L |
91 | \r |
92 | #if _CODE_PAGE == 932 /* Japanese Shift-JIS */\r | |
93 | #define _DF1S 0x81 /* DBC 1st byte range 1 start */\r | |
94 | #define _DF1E 0x9F /* DBC 1st byte range 1 end */\r | |
95 | #define _DF2S 0xE0 /* DBC 1st byte range 2 start */\r | |
96 | #define _DF2E 0xFC /* DBC 1st byte range 2 end */\r | |
97 | #define _DS1S 0x40 /* DBC 2nd byte range 1 start */\r | |
98 | #define _DS1E 0x7E /* DBC 2nd byte range 1 end */\r | |
99 | #define _DS2S 0x80 /* DBC 2nd byte range 2 start */\r | |
100 | #define _DS2E 0xFC /* DBC 2nd byte range 2 end */\r | |
101 | \r | |
102 | #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */\r | |
103 | #define _DF1S 0x81\r | |
104 | #define _DF1E 0xFE\r | |
105 | #define _DS1S 0x40\r | |
106 | #define _DS1E 0x7E\r | |
107 | #define _DS2S 0x80\r | |
108 | #define _DS2E 0xFE\r | |
109 | \r | |
110 | #elif _CODE_PAGE == 949 /* Korean */\r | |
111 | #define _DF1S 0x81\r | |
112 | #define _DF1E 0xFE\r | |
113 | #define _DS1S 0x41\r | |
114 | #define _DS1E 0x5A\r | |
115 | #define _DS2S 0x61\r | |
116 | #define _DS2E 0x7A\r | |
117 | #define _DS3S 0x81\r | |
118 | #define _DS3E 0xFE\r | |
119 | \r | |
120 | #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */\r | |
121 | #define _DF1S 0x81\r | |
122 | #define _DF1E 0xFE\r | |
123 | #define _DS1S 0x40\r | |
124 | #define _DS1E 0x7E\r | |
125 | #define _DS2S 0xA1\r | |
126 | #define _DS2E 0xFE\r | |
127 | \r | |
70702af1 | 128 | #elif _CODE_PAGE == 437 /* U.S. */\r |
53668523 | 129 | #define _DF1S 0\r |
70702af1 L |
130 | #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r |
131 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
132 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
133 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
134 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
135 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
136 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
137 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
138 | \r | |
139 | #elif _CODE_PAGE == 720 /* Arabic */\r | |
53668523 | 140 | #define _DF1S 0\r |
70702af1 L |
141 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
142 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
143 | 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
144 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
145 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
146 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
147 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
148 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
149 | \r | |
150 | #elif _CODE_PAGE == 737 /* Greek */\r | |
53668523 | 151 | #define _DF1S 0\r |
70702af1 L |
152 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
153 | 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \\r | |
154 | 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \\r | |
155 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
156 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
157 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
158 | 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
159 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
160 | \r | |
161 | #elif _CODE_PAGE == 771 /* KBL */\r | |
53668523 | 162 | #define _DF1S 0\r |
70702af1 L |
163 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
164 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
165 | 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r | |
166 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
167 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
168 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \\r | |
169 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
170 | 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}\r | |
171 | \r | |
172 | #elif _CODE_PAGE == 775 /* Baltic */\r | |
53668523 | 173 | #define _DF1S 0\r |
70702af1 L |
174 | #define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \\r |
175 | 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r | |
176 | 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
177 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
178 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
179 | 0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
180 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \\r | |
181 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
182 | \r | |
183 | #elif _CODE_PAGE == 850 /* Latin 1 */\r | |
53668523 | 184 | #define _DF1S 0\r |
70702af1 L |
185 | #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \\r |
186 | 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \\r | |
187 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
188 | 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
189 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
190 | 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \\r | |
191 | 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \\r | |
192 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
193 | \r | |
194 | #elif _CODE_PAGE == 852 /* Latin 2 */\r | |
53668523 | 195 | #define _DF1S 0\r |
70702af1 L |
196 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \\r |
197 | 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \\r | |
198 | 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \\r | |
199 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \\r | |
200 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
201 | 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
202 | 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \\r | |
203 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}\r | |
204 | \r | |
205 | #elif _CODE_PAGE == 855 /* Cyrillic */\r | |
53668523 | 206 | #define _DF1S 0\r |
70702af1 L |
207 | #define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \\r |
208 | 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \\r | |
209 | 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \\r | |
210 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \\r | |
211 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
212 | 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \\r | |
213 | 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \\r | |
214 | 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}\r | |
215 | \r | |
216 | #elif _CODE_PAGE == 857 /* Turkish */\r | |
53668523 | 217 | #define _DF1S 0\r |
70702af1 L |
218 | #define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \\r |
219 | 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \\r | |
220 | 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
221 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
222 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
223 | 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
224 | 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \\r | |
225 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
226 | \r | |
227 | #elif _CODE_PAGE == 860 /* Portuguese */\r | |
53668523 | 228 | #define _DF1S 0\r |
70702af1 L |
229 | #define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \\r |
230 | 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
231 | 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
232 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
233 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
234 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
235 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
236 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
237 | \r | |
238 | #elif _CODE_PAGE == 861 /* Icelandic */\r | |
53668523 | 239 | #define _DF1S 0\r |
70702af1 L |
240 | #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \\r |
241 | 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r | |
242 | 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
243 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
244 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
245 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
246 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
247 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
248 | \r | |
249 | #elif _CODE_PAGE == 862 /* Hebrew */\r | |
53668523 | 250 | #define _DF1S 0\r |
70702af1 L |
251 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
252 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
253 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
254 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
255 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
256 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
257 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
258 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
259 | \r | |
260 | #elif _CODE_PAGE == 863 /* Canadian-French */\r | |
53668523 | 261 | #define _DF1S 0\r |
70702af1 L |
262 | #define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \\r |
263 | 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \\r | |
264 | 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
265 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
266 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
267 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
268 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
269 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
270 | \r | |
271 | #elif _CODE_PAGE == 864 /* Arabic */\r | |
53668523 | 272 | #define _DF1S 0\r |
70702af1 L |
273 | #define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r |
274 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
275 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
276 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
277 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
278 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
279 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
280 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
281 | \r | |
282 | #elif _CODE_PAGE == 865 /* Nordic */\r | |
53668523 | 283 | #define _DF1S 0\r |
70702af1 L |
284 | #define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r |
285 | 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
286 | 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
287 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
288 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
289 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
290 | 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r | |
291 | 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
292 | \r | |
293 | #elif _CODE_PAGE == 866 /* Russian */\r | |
53668523 | 294 | #define _DF1S 0\r |
70702af1 L |
295 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
296 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
297 | 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r | |
298 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
299 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
300 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r | |
301 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r | |
302 | 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r | |
303 | \r | |
304 | #elif _CODE_PAGE == 869 /* Greek 2 */\r | |
53668523 | 305 | #define _DF1S 0\r |
70702af1 L |
306 | #define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r |
307 | 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \\r | |
308 | 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r | |
309 | 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r | |
310 | 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r | |
311 | 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \\r | |
312 | 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \\r | |
313 | 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}\r | |
53668523 L |
314 | \r |
315 | #elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */\r | |
70702af1 L |
316 | #if _USE_LFN != 0\r |
317 | #error Cannot enable LFN without valid code page.\r | |
53668523 L |
318 | #endif\r |
319 | #define _DF1S 0\r | |
320 | \r | |
321 | #else\r | |
322 | #error Unknown code page\r | |
323 | \r | |
324 | #endif\r | |
325 | \r | |
326 | \r | |
327 | /* Character code support macros */\r | |
328 | #define IsUpper(c) (((c)>='A')&&((c)<='Z'))\r | |
329 | #define IsLower(c) (((c)>='a')&&((c)<='z'))\r | |
330 | #define IsDigit(c) (((c)>='0')&&((c)<='9'))\r | |
331 | \r | |
70702af1 | 332 | #if _DF1S != 0 /* Code page is DBCS */\r |
53668523 L |
333 | \r |
334 | #ifdef _DF2S /* Two 1st byte areas */\r | |
335 | #define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))\r | |
336 | #else /* One 1st byte area */\r | |
337 | #define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)\r | |
338 | #endif\r | |
339 | \r | |
340 | #ifdef _DS3S /* Three 2nd byte areas */\r | |
341 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))\r | |
342 | #else /* Two 2nd byte areas */\r | |
343 | #define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))\r | |
344 | #endif\r | |
345 | \r | |
346 | #else /* Code page is SBCS */\r | |
347 | \r | |
348 | #define IsDBCS1(c) 0\r | |
349 | #define IsDBCS2(c) 0\r | |
350 | \r | |
351 | #endif /* _DF1S */\r | |
352 | \r | |
353 | \r | |
70702af1 L |
354 | /* File attribute bits (internal use) */\r |
355 | #define AM_VOL 0x08 /* Volume label */\r | |
356 | #define AM_LFN 0x0F /* LFN entry */\r | |
357 | #define AM_MASK 0x3F /* Mask of defined bits */\r | |
358 | \r | |
359 | \r | |
360 | /* File access control and file status flags (internal use) */\r | |
361 | #define FA_SEEKEND 0x20 /* Seek to end of the file on file open */\r | |
362 | #define FA_MODIFIED 0x40 /* File has been modified */\r | |
363 | #define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */\r | |
364 | \r | |
365 | \r | |
53668523 | 366 | /* Name status flags */\r |
7b78a5a2 | 367 | #define NSFLAG 11 /* Index of name status byte in fn[] */\r |
53668523 L |
368 | #define NS_LOSS 0x01 /* Out of 8.3 format */\r |
369 | #define NS_LFN 0x02 /* Force to create LFN entry */\r | |
370 | #define NS_LAST 0x04 /* Last segment */\r | |
371 | #define NS_BODY 0x08 /* Lower case flag (body) */\r | |
372 | #define NS_EXT 0x10 /* Lower case flag (ext) */\r | |
373 | #define NS_DOT 0x20 /* Dot entry */\r | |
70702af1 L |
374 | #define NS_NOLFN 0x40 /* Do not find LFN */\r |
375 | #define NS_NONAME 0x80 /* Not followed */\r | |
53668523 L |
376 | \r |
377 | \r | |
70702af1 L |
378 | /* Limits and boundaries (differ from specs but correct for real DOS/Windows) */\r |
379 | #define MAX_FAT12 0xFF5 /* Maximum number of FAT12 clusters */\r | |
380 | #define MAX_FAT16 0xFFF5 /* Maximum number of FAT16 clusters */\r | |
381 | #define MAX_FAT32 0xFFFFFF5 /* Maximum number of FAT32 clusters */\r | |
382 | #define MAX_EXFAT 0x7FFFFFFD /* Maximum number of exFAT clusters (limited by implementation) */\r | |
383 | #define MAX_DIR 0x200000 /* Maximum size of FAT directory */\r | |
384 | #define MAX_DIR_EX 0x10000000 /* Maximum size of exFAT directory */\r | |
53668523 L |
385 | \r |
386 | \r | |
387 | /* FatFs refers the members in the FAT structures as byte array instead of\r | |
70702af1 | 388 | / structure members because the structure is not binary compatible between\r |
53668523 L |
389 | / different platforms */\r |
390 | \r | |
70702af1 L |
391 | #define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */\r |
392 | #define BS_OEMName 3 /* OEM name (8-byte) */\r | |
393 | #define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */\r | |
394 | #define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */\r | |
395 | #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */\r | |
396 | #define BPB_NumFATs 16 /* Number of FATs (BYTE) */\r | |
397 | #define BPB_RootEntCnt 17 /* Size of root directory area for FAT12/16 [entry] (WORD) */\r | |
398 | #define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */\r | |
399 | #define BPB_Media 21 /* Media descriptor byte (BYTE) */\r | |
400 | #define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */\r | |
401 | #define BPB_SecPerTrk 24 /* Track size for int13h [sector] (WORD) */\r | |
402 | #define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */\r | |
403 | #define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */\r | |
404 | #define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */\r | |
405 | #define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */\r | |
406 | #define BS_NTres 37 /* Error flag (BYTE) */\r | |
407 | #define BS_BootSig 38 /* Extended boot signature (BYTE) */\r | |
408 | #define BS_VolID 39 /* Volume serial number (DWORD) */\r | |
409 | #define BS_VolLab 43 /* Volume label string (8-byte) */\r | |
410 | #define BS_FilSysType 54 /* File system type string (8-byte) */\r | |
411 | #define BS_BootCode 62 /* Boot code (448-byte) */\r | |
412 | #define BS_55AA 510 /* Signature word (WORD) */\r | |
413 | \r | |
414 | #define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */\r | |
415 | #define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */\r | |
416 | #define BPB_FSVer32 42 /* FAT32: File system version (WORD) */\r | |
417 | #define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */\r | |
418 | #define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */\r | |
419 | #define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */\r | |
420 | #define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */\r | |
421 | #define BS_NTres32 65 /* FAT32: Error flag (BYTE) */\r | |
422 | #define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */\r | |
423 | #define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */\r | |
424 | #define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */\r | |
425 | #define BS_FilSysType32 82 /* FAT32: File system type string (8-byte) */\r | |
426 | #define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */\r | |
427 | \r | |
428 | #define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */\r | |
429 | #define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */\r | |
430 | #define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */\r | |
431 | #define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */\r | |
432 | #define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */\r | |
433 | #define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */\r | |
434 | #define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */\r | |
435 | #define BPB_RootClusEx 96 /* exFAT: Root directory cluster (DWORD) */\r | |
436 | #define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */\r | |
437 | #define BPB_FSVerEx 104 /* exFAT: File system version (WORD) */\r | |
438 | #define BPB_VolFlagEx 106 /* exFAT: Volume flags (BYTE) */\r | |
439 | #define BPB_ActFatEx 107 /* exFAT: Active FAT flags (BYTE) */\r | |
440 | #define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in byte (BYTE) */\r | |
441 | #define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in sector (BYTE) */\r | |
442 | #define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */\r | |
443 | #define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */\r | |
444 | #define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */\r | |
445 | #define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */\r | |
446 | #define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */\r | |
447 | \r | |
448 | #define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */\r | |
449 | #define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */\r | |
450 | #define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */\r | |
451 | #define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */\r | |
452 | \r | |
453 | #define MBR_Table 446 /* MBR: Offset of partition table in the MBR */\r | |
53668523 | 454 | #define SZ_PTE 16 /* MBR: Size of a partition table entry */\r |
70702af1 L |
455 | #define PTE_Boot 0 /* MBR PTE: Boot indicator */\r |
456 | #define PTE_StHead 1 /* MBR PTE: Start head */\r | |
457 | #define PTE_StSec 2 /* MBR PTE: Start sector */\r | |
458 | #define PTE_StCyl 3 /* MBR PTE: Start cylinder */\r | |
459 | #define PTE_System 4 /* MBR PTE: System ID */\r | |
460 | #define PTE_EdHead 5 /* MBR PTE: End head */\r | |
461 | #define PTE_EdSec 6 /* MBR PTE: End sector */\r | |
462 | #define PTE_EdCyl 7 /* MBR PTE: End cylinder */\r | |
463 | #define PTE_StLba 8 /* MBR PTE: Start in LBA */\r | |
464 | #define PTE_SizLba 12 /* MBR PTE: Size in LBA */\r | |
465 | \r | |
466 | #define DIR_Name 0 /* Short file name (11-byte) */\r | |
467 | #define DIR_Attr 11 /* Attribute (BYTE) */\r | |
468 | #define DIR_NTres 12 /* Lower case flag (BYTE) */\r | |
469 | #define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */\r | |
470 | #define DIR_CrtTime 14 /* Created time (DWORD) */\r | |
471 | #define DIR_LstAccDate 18 /* Last accessed date (WORD) */\r | |
472 | #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */\r | |
473 | #define DIR_ModTime 22 /* Modified time (DWORD) */\r | |
474 | #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */\r | |
475 | #define DIR_FileSize 28 /* File size (DWORD) */\r | |
476 | #define LDIR_Ord 0 /* LFN entry order and LLE flag (BYTE) */\r | |
477 | #define LDIR_Attr 11 /* LFN attribute (BYTE) */\r | |
478 | #define LDIR_Type 12 /* LFN type (BYTE) */\r | |
479 | #define LDIR_Chksum 13 /* Checksum of the SFN entry (BYTE) */\r | |
480 | #define LDIR_FstClusLO 26 /* Must be zero (WORD) */\r | |
481 | #define XDIR_Type 0 /* Type of exFAT directory entry (BYTE) */\r | |
482 | #define XDIR_NumLabel 1 /* Number of volume label characters (BYTE) */\r | |
483 | #define XDIR_Label 2 /* Volume label (11-WORD) */\r | |
484 | #define XDIR_CaseSum 4 /* Sum of case conversion table (DWORD) */\r | |
485 | #define XDIR_NumSec 1 /* Number of secondary entries (BYTE) */\r | |
486 | #define XDIR_SetSum 2 /* Sum of the set of directory entries (WORD) */\r | |
487 | #define XDIR_Attr 4 /* File attribute (WORD) */\r | |
488 | #define XDIR_CrtTime 8 /* Created time (DWORD) */\r | |
489 | #define XDIR_ModTime 12 /* Modified time (DWORD) */\r | |
490 | #define XDIR_AccTime 16 /* Last accessed time (DWORD) */\r | |
491 | #define XDIR_CrtTime10 20 /* Created time subsecond (BYTE) */\r | |
492 | #define XDIR_ModTime10 21 /* Modified time subsecond (BYTE) */\r | |
493 | #define XDIR_CrtTZ 22 /* Created timezone (BYTE) */\r | |
494 | #define XDIR_ModTZ 23 /* Modified timezone (BYTE) */\r | |
495 | #define XDIR_AccTZ 24 /* Last accessed timezone (BYTE) */\r | |
496 | #define XDIR_GenFlags 33 /* Gneral secondary flags (WORD) */\r | |
497 | #define XDIR_NumName 35 /* Number of file name characters (BYTE) */\r | |
498 | #define XDIR_NameHash 36 /* Hash of file name (WORD) */\r | |
499 | #define XDIR_ValidFileSize 40 /* Valid file size (QWORD) */\r | |
500 | #define XDIR_FstClus 52 /* First cluster of the file data (DWORD) */\r | |
501 | #define XDIR_FileSize 56 /* File/Directory size (QWORD) */\r | |
502 | \r | |
503 | #define SZDIRE 32 /* Size of a directory entry */\r | |
504 | #define LLEF 0x40 /* Last long entry flag in LDIR_Ord */\r | |
505 | #define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */\r | |
506 | #define RDDEM 0x05 /* Replacement of the character collides with DDEM */\r | |
507 | \r | |
508 | \r | |
509 | \r | |
510 | \r | |
511 | \r | |
512 | /*--------------------------------------------------------------------------\r | |
513 | \r | |
514 | Module Private Work Area\r | |
515 | \r | |
516 | ---------------------------------------------------------------------------*/\r | |
517 | \r | |
518 | /* Remark: Variables here without initial value shall be guaranteed zero/null\r | |
519 | / at start-up. If not, either the linker or start-up routine being used is\r | |
520 | / not compliance with C standard. */\r | |
53668523 | 521 | \r |
7b78a5a2 L |
522 | #if _VOLUMES < 1 || _VOLUMES > 9\r |
523 | #error Wrong _VOLUMES setting\r | |
53668523 | 524 | #endif\r |
7b78a5a2 L |
525 | static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */\r |
526 | static WORD Fsid; /* File system mount ID */\r | |
53668523 | 527 | \r |
70702af1 | 528 | #if _FS_RPATH != 0 && _VOLUMES >= 2\r |
7b78a5a2 | 529 | static BYTE CurrVol; /* Current drive */\r |
53668523 L |
530 | #endif\r |
531 | \r | |
70702af1 | 532 | #if _FS_LOCK != 0\r |
7b78a5a2 | 533 | static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */\r |
53668523 L |
534 | #endif\r |
535 | \r | |
70702af1 L |
536 | #if _USE_LFN == 0 /* Non-LFN configuration */\r |
537 | #define DEF_NAMBUF\r | |
538 | #define INIT_NAMBUF(fs)\r | |
539 | #define FREE_NAMBUF()\r | |
7b78a5a2 L |
540 | #else\r |
541 | #if _MAX_LFN < 12 || _MAX_LFN > 255\r | |
542 | #error Wrong _MAX_LFN setting\r | |
543 | #endif\r | |
70702af1 L |
544 | \r |
545 | #if _USE_LFN == 1 /* LFN enabled with static working buffer */\r | |
546 | #if _FS_EXFAT\r | |
547 | static BYTE DirBuf[SZDIRE*19]; /* Directory entry block scratchpad buffer (19 entries in size) */\r | |
548 | #endif\r | |
549 | static WCHAR LfnBuf[_MAX_LFN+1]; /* LFN enabled with static working buffer */\r | |
550 | #define DEF_NAMBUF\r | |
551 | #define INIT_NAMBUF(fs)\r | |
552 | #define FREE_NAMBUF()\r | |
553 | \r | |
554 | #elif _USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */\r | |
555 | #if _FS_EXFAT\r | |
556 | #define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[SZDIRE*19];\r | |
557 | #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }\r | |
558 | #define FREE_NAMBUF()\r | |
559 | #else\r | |
560 | #define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1];\r | |
561 | #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; }\r | |
562 | #define FREE_NAMBUF()\r | |
563 | #endif\r | |
564 | \r | |
565 | #elif _USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */\r | |
566 | #if _FS_EXFAT\r | |
567 | #define DEF_NAMBUF WCHAR *lfn;\r | |
568 | #define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2 + SZDIRE*19); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); }\r | |
569 | #define FREE_NAMBUF() ff_memfree(lfn)\r | |
570 | #else\r | |
571 | #define DEF_NAMBUF WCHAR *lfn;\r | |
572 | #define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }\r | |
573 | #define FREE_NAMBUF() ff_memfree(lfn)\r | |
574 | #endif\r | |
575 | \r | |
53668523 | 576 | #else\r |
7b78a5a2 L |
577 | #error Wrong _USE_LFN setting\r |
578 | #endif\r | |
53668523 | 579 | #endif\r |
53668523 L |
580 | \r |
581 | #ifdef _EXCVT\r | |
70702af1 | 582 | static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */\r |
53668523 L |
583 | #endif\r |
584 | \r | |
585 | \r | |
586 | \r | |
587 | \r | |
588 | \r | |
589 | \r | |
590 | /*--------------------------------------------------------------------------\r | |
591 | \r | |
592 | Module Private Functions\r | |
593 | \r | |
594 | ---------------------------------------------------------------------------*/\r | |
595 | \r | |
596 | \r | |
70702af1 L |
597 | /*-----------------------------------------------------------------------*/\r |
598 | /* Load/Store multi-byte word in the FAT structure */\r | |
599 | /*-----------------------------------------------------------------------*/\r | |
600 | \r | |
601 | static\r | |
602 | WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */\r | |
603 | {\r | |
604 | WORD rv;\r | |
605 | \r | |
606 | rv = ptr[1];\r | |
607 | rv = rv << 8 | ptr[0];\r | |
608 | return rv;\r | |
609 | }\r | |
610 | \r | |
611 | static\r | |
612 | DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */\r | |
613 | {\r | |
614 | DWORD rv;\r | |
615 | \r | |
616 | rv = ptr[3];\r | |
617 | rv = rv << 8 | ptr[2];\r | |
618 | rv = rv << 8 | ptr[1];\r | |
619 | rv = rv << 8 | ptr[0];\r | |
620 | return rv;\r | |
621 | }\r | |
622 | \r | |
623 | #if _FS_EXFAT\r | |
624 | static\r | |
625 | QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */\r | |
626 | {\r | |
627 | QWORD rv;\r | |
628 | \r | |
629 | rv = ptr[7];\r | |
630 | rv = rv << 8 | ptr[6];\r | |
631 | rv = rv << 8 | ptr[5];\r | |
632 | rv = rv << 8 | ptr[4];\r | |
633 | rv = rv << 8 | ptr[3];\r | |
634 | rv = rv << 8 | ptr[2];\r | |
635 | rv = rv << 8 | ptr[1];\r | |
636 | rv = rv << 8 | ptr[0];\r | |
637 | return rv;\r | |
638 | }\r | |
639 | #endif\r | |
640 | \r | |
641 | #if !_FS_READONLY\r | |
642 | static\r | |
643 | void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */\r | |
644 | {\r | |
645 | *ptr++ = (BYTE)val; val >>= 8;\r | |
646 | *ptr++ = (BYTE)val;\r | |
647 | }\r | |
648 | \r | |
649 | static\r | |
650 | void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */\r | |
651 | {\r | |
652 | *ptr++ = (BYTE)val; val >>= 8;\r | |
653 | *ptr++ = (BYTE)val; val >>= 8;\r | |
654 | *ptr++ = (BYTE)val; val >>= 8;\r | |
655 | *ptr++ = (BYTE)val;\r | |
656 | }\r | |
657 | \r | |
658 | #if _FS_EXFAT\r | |
659 | static\r | |
660 | void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */\r | |
661 | {\r | |
662 | *ptr++ = (BYTE)val; val >>= 8;\r | |
663 | *ptr++ = (BYTE)val; val >>= 8;\r | |
664 | *ptr++ = (BYTE)val; val >>= 8;\r | |
665 | *ptr++ = (BYTE)val; val >>= 8;\r | |
666 | *ptr++ = (BYTE)val; val >>= 8;\r | |
667 | *ptr++ = (BYTE)val; val >>= 8;\r | |
668 | *ptr++ = (BYTE)val; val >>= 8;\r | |
669 | *ptr++ = (BYTE)val;\r | |
670 | }\r | |
671 | #endif\r | |
672 | #endif /* !_FS_READONLY */\r | |
673 | \r | |
674 | \r | |
675 | \r | |
53668523 L |
676 | /*-----------------------------------------------------------------------*/\r |
677 | /* String functions */\r | |
678 | /*-----------------------------------------------------------------------*/\r | |
679 | \r | |
680 | /* Copy memory to memory */\r | |
681 | static\r | |
682 | void mem_cpy (void* dst, const void* src, UINT cnt) {\r | |
683 | BYTE *d = (BYTE*)dst;\r | |
684 | const BYTE *s = (const BYTE*)src;\r | |
685 | \r | |
70702af1 L |
686 | if (cnt) {\r |
687 | do *d++ = *s++; while (--cnt);\r | |
53668523 | 688 | }\r |
53668523 L |
689 | }\r |
690 | \r | |
70702af1 | 691 | /* Fill memory block */\r |
53668523 L |
692 | static\r |
693 | void mem_set (void* dst, int val, UINT cnt) {\r | |
694 | BYTE *d = (BYTE*)dst;\r | |
695 | \r | |
70702af1 | 696 | do *d++ = (BYTE)val; while (--cnt);\r |
53668523 L |
697 | }\r |
698 | \r | |
70702af1 | 699 | /* Compare memory block */\r |
53668523 | 700 | static\r |
70702af1 | 701 | int mem_cmp (const void* dst, const void* src, UINT cnt) { /* ZR:same, NZ:different */\r |
53668523 L |
702 | const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;\r |
703 | int r = 0;\r | |
704 | \r | |
70702af1 L |
705 | do {\r |
706 | r = *d++ - *s++;\r | |
707 | } while (--cnt && r == 0);\r | |
708 | \r | |
53668523 L |
709 | return r;\r |
710 | }\r | |
711 | \r | |
712 | /* Check if chr is contained in the string */\r | |
713 | static\r | |
70702af1 | 714 | int chk_chr (const char* str, int chr) { /* NZ:contained, ZR:not contained */\r |
53668523 L |
715 | while (*str && *str != chr) str++;\r |
716 | return *str;\r | |
717 | }\r | |
718 | \r | |
719 | \r | |
720 | \r | |
721 | \r | |
70702af1 | 722 | #if _FS_REENTRANT\r |
53668523 L |
723 | /*-----------------------------------------------------------------------*/\r |
724 | /* Request/Release grant to access the volume */\r | |
725 | /*-----------------------------------------------------------------------*/\r | |
53668523 L |
726 | static\r |
727 | int lock_fs (\r | |
728 | FATFS* fs /* File system object */\r | |
729 | )\r | |
730 | {\r | |
731 | return ff_req_grant(fs->sobj);\r | |
732 | }\r | |
733 | \r | |
734 | \r | |
735 | static\r | |
736 | void unlock_fs (\r | |
737 | FATFS* fs, /* File system object */\r | |
738 | FRESULT res /* Result code to be returned */\r | |
739 | )\r | |
740 | {\r | |
70702af1 | 741 | if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {\r |
53668523 L |
742 | ff_rel_grant(fs->sobj);\r |
743 | }\r | |
744 | }\r | |
53668523 | 745 | \r |
70702af1 | 746 | #endif\r |
53668523 L |
747 | \r |
748 | \r | |
749 | \r | |
70702af1 | 750 | #if _FS_LOCK != 0\r |
53668523 L |
751 | /*-----------------------------------------------------------------------*/\r |
752 | /* File lock control functions */\r | |
753 | /*-----------------------------------------------------------------------*/\r | |
53668523 L |
754 | \r |
755 | static\r | |
756 | FRESULT chk_lock ( /* Check if the file can be accessed */\r | |
757 | DIR* dp, /* Directory object pointing the file to be checked */\r | |
758 | int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */\r | |
759 | )\r | |
760 | {\r | |
761 | UINT i, be;\r | |
762 | \r | |
763 | /* Search file semaphore table */\r | |
764 | for (i = be = 0; i < _FS_LOCK; i++) {\r | |
765 | if (Files[i].fs) { /* Existing entry */\r | |
70702af1 L |
766 | if (Files[i].fs == dp->obj.fs && /* Check if the object matched with an open object */\r |
767 | Files[i].clu == dp->obj.sclust &&\r | |
768 | Files[i].ofs == dp->dptr) break;\r | |
53668523 L |
769 | } else { /* Blank entry */\r |
770 | be = 1;\r | |
771 | }\r | |
772 | }\r | |
70702af1 | 773 | if (i == _FS_LOCK) { /* The object is not opened */\r |
53668523 | 774 | return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */\r |
70702af1 | 775 | }\r |
53668523 L |
776 | \r |
777 | /* The object has been opened. Reject any open against writing file and all write mode open */\r | |
778 | return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;\r | |
779 | }\r | |
780 | \r | |
781 | \r | |
782 | static\r | |
783 | int enq_lock (void) /* Check if an entry is available for a new object */\r | |
784 | {\r | |
785 | UINT i;\r | |
786 | \r | |
787 | for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r | |
788 | return (i == _FS_LOCK) ? 0 : 1;\r | |
789 | }\r | |
790 | \r | |
791 | \r | |
792 | static\r | |
793 | UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */\r | |
794 | DIR* dp, /* Directory object pointing the file to register or increment */\r | |
795 | int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */\r | |
796 | )\r | |
797 | {\r | |
798 | UINT i;\r | |
799 | \r | |
800 | \r | |
801 | for (i = 0; i < _FS_LOCK; i++) { /* Find the object */\r | |
70702af1 L |
802 | if (Files[i].fs == dp->obj.fs &&\r |
803 | Files[i].clu == dp->obj.sclust &&\r | |
804 | Files[i].ofs == dp->dptr) break;\r | |
53668523 L |
805 | }\r |
806 | \r | |
807 | if (i == _FS_LOCK) { /* Not opened. Register it as new. */\r | |
808 | for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r | |
809 | if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */\r | |
70702af1 L |
810 | Files[i].fs = dp->obj.fs;\r |
811 | Files[i].clu = dp->obj.sclust;\r | |
812 | Files[i].ofs = dp->dptr;\r | |
53668523 L |
813 | Files[i].ctr = 0;\r |
814 | }\r | |
815 | \r | |
816 | if (acc && Files[i].ctr) return 0; /* Access violation (int err) */\r | |
817 | \r | |
818 | Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */\r | |
819 | \r | |
820 | return i + 1;\r | |
821 | }\r | |
822 | \r | |
823 | \r | |
824 | static\r | |
825 | FRESULT dec_lock ( /* Decrement object open counter */\r | |
826 | UINT i /* Semaphore index (1..) */\r | |
827 | )\r | |
828 | {\r | |
829 | WORD n;\r | |
830 | FRESULT res;\r | |
831 | \r | |
832 | \r | |
833 | if (--i < _FS_LOCK) { /* Shift index number origin from 0 */\r | |
834 | n = Files[i].ctr;\r | |
835 | if (n == 0x100) n = 0; /* If write mode open, delete the entry */\r | |
70702af1 | 836 | if (n > 0) n--; /* Decrement read mode open count */\r |
53668523 | 837 | Files[i].ctr = n;\r |
70702af1 | 838 | if (n == 0) Files[i].fs = 0; /* Delete the entry if open count gets zero */\r |
53668523 L |
839 | res = FR_OK;\r |
840 | } else {\r | |
841 | res = FR_INT_ERR; /* Invalid index nunber */\r | |
842 | }\r | |
843 | return res;\r | |
844 | }\r | |
845 | \r | |
846 | \r | |
847 | static\r | |
848 | void clear_lock ( /* Clear lock entries of the volume */\r | |
849 | FATFS *fs\r | |
850 | )\r | |
851 | {\r | |
852 | UINT i;\r | |
853 | \r | |
854 | for (i = 0; i < _FS_LOCK; i++) {\r | |
855 | if (Files[i].fs == fs) Files[i].fs = 0;\r | |
856 | }\r | |
857 | }\r | |
53668523 | 858 | \r |
70702af1 | 859 | #endif /* _FS_LOCK != 0 */\r |
53668523 L |
860 | \r |
861 | \r | |
862 | \r | |
863 | /*-----------------------------------------------------------------------*/\r | |
864 | /* Move/Flush disk access window in the file system object */\r | |
865 | /*-----------------------------------------------------------------------*/\r | |
866 | #if !_FS_READONLY\r | |
867 | static\r | |
70702af1 L |
868 | FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERROR */\r |
869 | FATFS* fs /* File system object */\r | |
53668523 L |
870 | )\r |
871 | {\r | |
872 | DWORD wsect;\r | |
873 | UINT nf;\r | |
7b78a5a2 | 874 | FRESULT res = FR_OK;\r |
53668523 L |
875 | \r |
876 | \r | |
877 | if (fs->wflag) { /* Write back the sector if it is dirty */\r | |
878 | wsect = fs->winsect; /* Current sector number */\r | |
7b78a5a2 L |
879 | if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {\r |
880 | res = FR_DISK_ERR;\r | |
881 | } else {\r | |
882 | fs->wflag = 0;\r | |
883 | if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */\r | |
884 | for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */\r | |
885 | wsect += fs->fsize;\r | |
886 | disk_write(fs->drv, fs->win, wsect, 1);\r | |
887 | }\r | |
53668523 L |
888 | }\r |
889 | }\r | |
890 | }\r | |
7b78a5a2 | 891 | return res;\r |
53668523 L |
892 | }\r |
893 | #endif\r | |
894 | \r | |
895 | \r | |
896 | static\r | |
70702af1 L |
897 | FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERROR */\r |
898 | FATFS* fs, /* File system object */\r | |
899 | DWORD sector /* Sector number to make appearance in the fs->win[] */\r | |
53668523 L |
900 | )\r |
901 | {\r | |
7b78a5a2 L |
902 | FRESULT res = FR_OK;\r |
903 | \r | |
904 | \r | |
905 | if (sector != fs->winsect) { /* Window offset changed? */\r | |
53668523 | 906 | #if !_FS_READONLY\r |
7b78a5a2 | 907 | res = sync_window(fs); /* Write-back changes */\r |
53668523 | 908 | #endif\r |
7b78a5a2 L |
909 | if (res == FR_OK) { /* Fill sector window with new data */\r |
910 | if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {\r | |
911 | sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */\r | |
912 | res = FR_DISK_ERR;\r | |
913 | }\r | |
914 | fs->winsect = sector;\r | |
915 | }\r | |
53668523 | 916 | }\r |
7b78a5a2 | 917 | return res;\r |
53668523 L |
918 | }\r |
919 | \r | |
920 | \r | |
921 | \r | |
922 | \r | |
70702af1 | 923 | #if !_FS_READONLY\r |
53668523 L |
924 | /*-----------------------------------------------------------------------*/\r |
925 | /* Synchronize file system and strage device */\r | |
926 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 927 | \r |
53668523 | 928 | static\r |
70702af1 | 929 | FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */\r |
53668523 L |
930 | FATFS* fs /* File system object */\r |
931 | )\r | |
932 | {\r | |
933 | FRESULT res;\r | |
934 | \r | |
935 | \r | |
936 | res = sync_window(fs);\r | |
937 | if (res == FR_OK) {\r | |
70702af1 | 938 | /* Update FSInfo sector if needed */\r |
53668523 | 939 | if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {\r |
70702af1 | 940 | /* Create FSInfo structure */\r |
53668523 | 941 | mem_set(fs->win, 0, SS(fs));\r |
70702af1 L |
942 | st_word(fs->win + BS_55AA, 0xAA55);\r |
943 | st_dword(fs->win + FSI_LeadSig, 0x41615252);\r | |
944 | st_dword(fs->win + FSI_StrucSig, 0x61417272);\r | |
945 | st_dword(fs->win + FSI_Free_Count, fs->free_clst);\r | |
946 | st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);\r | |
947 | /* Write it into the FSInfo sector */\r | |
53668523 L |
948 | fs->winsect = fs->volbase + 1;\r |
949 | disk_write(fs->drv, fs->win, fs->winsect, 1);\r | |
950 | fs->fsi_flag = 0;\r | |
951 | }\r | |
952 | /* Make sure that no pending write process in the physical drive */\r | |
70702af1 | 953 | if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;\r |
53668523 L |
954 | }\r |
955 | \r | |
956 | return res;\r | |
957 | }\r | |
53668523 | 958 | \r |
70702af1 | 959 | #endif\r |
53668523 L |
960 | \r |
961 | \r | |
962 | \r | |
963 | /*-----------------------------------------------------------------------*/\r | |
964 | /* Get sector# from cluster# */\r | |
965 | /*-----------------------------------------------------------------------*/\r | |
53668523 | 966 | \r |
70702af1 L |
967 | static\r |
968 | DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */\r | |
53668523 L |
969 | FATFS* fs, /* File system object */\r |
970 | DWORD clst /* Cluster# to be converted */\r | |
971 | )\r | |
972 | {\r | |
973 | clst -= 2;\r | |
7b78a5a2 | 974 | if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */\r |
53668523 L |
975 | return clst * fs->csize + fs->database;\r |
976 | }\r | |
977 | \r | |
978 | \r | |
979 | \r | |
980 | \r | |
981 | /*-----------------------------------------------------------------------*/\r | |
982 | /* FAT access - Read value of a FAT entry */\r | |
983 | /*-----------------------------------------------------------------------*/\r | |
984 | \r | |
70702af1 L |
985 | static\r |
986 | DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */\r | |
987 | _FDID* obj, /* Corresponding object */\r | |
988 | DWORD clst /* Cluster number to get the value */\r | |
53668523 L |
989 | )\r |
990 | {\r | |
991 | UINT wc, bc;\r | |
7b78a5a2 | 992 | DWORD val;\r |
70702af1 | 993 | FATFS *fs = obj->fs;\r |
53668523 L |
994 | \r |
995 | \r | |
70702af1 | 996 | if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */\r |
7b78a5a2 | 997 | val = 1; /* Internal error */\r |
53668523 | 998 | \r |
7b78a5a2 L |
999 | } else {\r |
1000 | val = 0xFFFFFFFF; /* Default value falls on disk error */\r | |
53668523 | 1001 | \r |
7b78a5a2 L |
1002 | switch (fs->fs_type) {\r |
1003 | case FS_FAT12 :\r | |
1004 | bc = (UINT)clst; bc += bc / 2;\r | |
1005 | if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r | |
1006 | wc = fs->win[bc++ % SS(fs)];\r | |
1007 | if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r | |
1008 | wc |= fs->win[bc % SS(fs)] << 8;\r | |
70702af1 | 1009 | val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF);\r |
7b78a5a2 L |
1010 | break;\r |
1011 | \r | |
1012 | case FS_FAT16 :\r | |
1013 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;\r | |
70702af1 | 1014 | val = ld_word(fs->win + clst * 2 % SS(fs));\r |
7b78a5a2 | 1015 | break;\r |
53668523 | 1016 | \r |
7b78a5a2 L |
1017 | case FS_FAT32 :\r |
1018 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r | |
70702af1 | 1019 | val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;\r |
7b78a5a2 | 1020 | break;\r |
70702af1 L |
1021 | #if _FS_EXFAT\r |
1022 | case FS_EXFAT :\r | |
1023 | if (obj->objsize) {\r | |
1024 | DWORD cofs = clst - obj->sclust; /* Offset from start cluster */\r | |
1025 | DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize; /* Number of clusters - 1 */\r | |
1026 | \r | |
1027 | if (obj->stat == 2) { /* Is there no valid chain on the FAT? */\r | |
1028 | if (cofs <= clen) {\r | |
1029 | val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* Generate the value */\r | |
1030 | break;\r | |
1031 | }\r | |
1032 | }\r | |
1033 | if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the contiguous part? */\r | |
1034 | val = clst + 1; /* Generate the value */\r | |
1035 | break;\r | |
1036 | }\r | |
1037 | if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */\r | |
1038 | if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r | |
1039 | val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;\r | |
1040 | break;\r | |
1041 | }\r | |
1042 | }\r | |
1043 | /* go next */\r | |
1044 | #endif\r | |
7b78a5a2 L |
1045 | default:\r |
1046 | val = 1; /* Internal error */\r | |
1047 | }\r | |
53668523 L |
1048 | }\r |
1049 | \r | |
7b78a5a2 | 1050 | return val;\r |
53668523 L |
1051 | }\r |
1052 | \r | |
1053 | \r | |
1054 | \r | |
1055 | \r | |
70702af1 | 1056 | #if !_FS_READONLY\r |
53668523 L |
1057 | /*-----------------------------------------------------------------------*/\r |
1058 | /* FAT access - Change value of a FAT entry */\r | |
1059 | /*-----------------------------------------------------------------------*/\r | |
53668523 | 1060 | \r |
70702af1 L |
1061 | static\r |
1062 | FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */\r | |
1063 | FATFS* fs, /* Corresponding file system object */\r | |
1064 | DWORD clst, /* FAT index number (cluster number) to be changed */\r | |
1065 | DWORD val /* New value to be set to the entry */\r | |
53668523 L |
1066 | )\r |
1067 | {\r | |
1068 | UINT bc;\r | |
1069 | BYTE *p;\r | |
70702af1 | 1070 | FRESULT res = FR_INT_ERR;\r |
53668523 L |
1071 | \r |
1072 | \r | |
70702af1 | 1073 | if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */\r |
53668523 | 1074 | switch (fs->fs_type) {\r |
70702af1 | 1075 | case FS_FAT12 : /* Bitfield items */\r |
53668523 L |
1076 | bc = (UINT)clst; bc += bc / 2;\r |
1077 | res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r | |
1078 | if (res != FR_OK) break;\r | |
70702af1 | 1079 | p = fs->win + bc++ % SS(fs);\r |
53668523 | 1080 | *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;\r |
53668523 L |
1081 | fs->wflag = 1;\r |
1082 | res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r | |
1083 | if (res != FR_OK) break;\r | |
70702af1 | 1084 | p = fs->win + bc % SS(fs);\r |
53668523 | 1085 | *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));\r |
7b78a5a2 | 1086 | fs->wflag = 1;\r |
53668523 L |
1087 | break;\r |
1088 | \r | |
70702af1 | 1089 | case FS_FAT16 : /* WORD aligned items */\r |
53668523 L |
1090 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));\r |
1091 | if (res != FR_OK) break;\r | |
70702af1 | 1092 | st_word(fs->win + clst * 2 % SS(fs), (WORD)val);\r |
7b78a5a2 | 1093 | fs->wflag = 1;\r |
53668523 L |
1094 | break;\r |
1095 | \r | |
70702af1 L |
1096 | case FS_FAT32 : /* DWORD aligned items */\r |
1097 | #if _FS_EXFAT\r | |
1098 | case FS_EXFAT :\r | |
1099 | #endif\r | |
53668523 L |
1100 | res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));\r |
1101 | if (res != FR_OK) break;\r | |
70702af1 L |
1102 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r |
1103 | val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);\r | |
1104 | }\r | |
1105 | st_dword(fs->win + clst * 4 % SS(fs), val);\r | |
7b78a5a2 | 1106 | fs->wflag = 1;\r |
53668523 | 1107 | break;\r |
53668523 | 1108 | }\r |
53668523 | 1109 | }\r |
53668523 L |
1110 | return res;\r |
1111 | }\r | |
70702af1 | 1112 | \r |
53668523 L |
1113 | #endif /* !_FS_READONLY */\r |
1114 | \r | |
1115 | \r | |
1116 | \r | |
1117 | \r | |
70702af1 | 1118 | #if _FS_EXFAT && !_FS_READONLY\r |
53668523 | 1119 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1120 | /* exFAT: Accessing FAT and Allocation Bitmap */\r |
53668523 | 1121 | /*-----------------------------------------------------------------------*/\r |
70702af1 L |
1122 | \r |
1123 | /*---------------------------------------------*/\r | |
1124 | /* exFAT: Find a contiguous free cluster block */\r | |
1125 | /*---------------------------------------------*/\r | |
1126 | \r | |
53668523 | 1127 | static\r |
70702af1 L |
1128 | DWORD find_bitmap ( /* 0:No free cluster, 2..:Free cluster found, 0xFFFFFFFF:Disk error */\r |
1129 | FATFS* fs, /* File system object */\r | |
1130 | DWORD clst, /* Cluster number to scan from */\r | |
1131 | DWORD ncl /* Number of contiguous clusters to find (1..) */\r | |
1132 | )\r | |
1133 | {\r | |
1134 | BYTE bm, bv;\r | |
1135 | UINT i;\r | |
1136 | DWORD val, scl, ctr;\r | |
1137 | \r | |
1138 | \r | |
1139 | clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */\r | |
1140 | if (clst >= fs->n_fatent - 2) clst = 0;\r | |
1141 | scl = val = clst; ctr = 0;\r | |
1142 | for (;;) {\r | |
1143 | if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF; /* (assuming bitmap is located top of the cluster heap) */\r | |
1144 | i = val / 8 % SS(fs); bm = 1 << (val % 8);\r | |
1145 | do {\r | |
1146 | do {\r | |
1147 | bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */\r | |
1148 | if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */\r | |
1149 | val = 0; bm = 0; i = 4096;\r | |
1150 | }\r | |
1151 | if (!bv) { /* Is it a free cluster? */\r | |
1152 | if (++ctr == ncl) return scl + 2; /* Check run length */\r | |
1153 | } else {\r | |
1154 | scl = val; ctr = 0; /* Encountered a live cluster, restart to scan */\r | |
1155 | }\r | |
1156 | if (val == clst) return 0; /* All cluster scanned? */\r | |
1157 | } while (bm);\r | |
1158 | bm = 1;\r | |
1159 | } while (++i < SS(fs));\r | |
1160 | }\r | |
1161 | }\r | |
1162 | \r | |
1163 | \r | |
1164 | /*------------------------------------*/\r | |
1165 | /* exFAT: Set/Clear a block of bitmap */\r | |
1166 | /*------------------------------------*/\r | |
1167 | \r | |
1168 | static\r | |
1169 | FRESULT change_bitmap (\r | |
1170 | FATFS* fs, /* File system object */\r | |
1171 | DWORD clst, /* Cluster number to change from */\r | |
1172 | DWORD ncl, /* Number of clusters to be changed */\r | |
1173 | int bv /* bit value to be set (0 or 1) */\r | |
1174 | )\r | |
1175 | {\r | |
1176 | BYTE bm;\r | |
1177 | UINT i;\r | |
1178 | DWORD sect;\r | |
1179 | \r | |
1180 | \r | |
1181 | clst -= 2; /* The first bit corresponds to cluster #2 */\r | |
1182 | sect = fs->database + clst / 8 / SS(fs); /* Sector address (assuming bitmap is located top of the cluster heap) */\r | |
1183 | i = clst / 8 % SS(fs); /* Byte offset in the sector */\r | |
1184 | bm = 1 << (clst % 8); /* Bit mask in the byte */\r | |
1185 | for (;;) {\r | |
1186 | if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;\r | |
1187 | do {\r | |
1188 | do {\r | |
1189 | if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */\r | |
1190 | fs->win[i] ^= bm; /* Flip the bit */\r | |
1191 | fs->wflag = 1;\r | |
1192 | if (--ncl == 0) return FR_OK; /* All bits processed? */\r | |
1193 | } while (bm <<= 1); /* Next bit */\r | |
1194 | bm = 1;\r | |
1195 | } while (++i < SS(fs)); /* Next byte */\r | |
1196 | i = 0;\r | |
1197 | }\r | |
1198 | }\r | |
1199 | \r | |
1200 | \r | |
1201 | /*---------------------------------------------*/\r | |
1202 | /* Complement contiguous part of the FAT chain */\r | |
1203 | /*---------------------------------------------*/\r | |
1204 | \r | |
1205 | static\r | |
1206 | FRESULT fill_fat_chain (\r | |
1207 | _FDID* obj /* Pointer to the corresponding object */\r | |
53668523 L |
1208 | )\r |
1209 | {\r | |
1210 | FRESULT res;\r | |
70702af1 L |
1211 | DWORD cl, n;\r |
1212 | \r | |
1213 | if (obj->stat == 3) { /* Has the object been changed 'fragmented'? */\r | |
1214 | for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */\r | |
1215 | res = put_fat(obj->fs, cl, cl + 1);\r | |
1216 | if (res != FR_OK) return res;\r | |
1217 | }\r | |
1218 | obj->stat = 0; /* Change status 'FAT chain is valid' */\r | |
1219 | }\r | |
1220 | return FR_OK;\r | |
1221 | }\r | |
1222 | \r | |
1223 | #endif /* _FS_EXFAT && !_FS_READONLY */\r | |
1224 | \r | |
1225 | \r | |
1226 | \r | |
1227 | #if !_FS_READONLY\r | |
1228 | /*-----------------------------------------------------------------------*/\r | |
1229 | /* FAT handling - Remove a cluster chain */\r | |
1230 | /*-----------------------------------------------------------------------*/\r | |
1231 | static\r | |
1232 | FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */\r | |
1233 | _FDID* obj, /* Corresponding object */\r | |
1234 | DWORD clst, /* Cluster to remove a chain from */\r | |
1235 | DWORD pclst /* Previous cluster of clst (0:an entire chain) */\r | |
1236 | )\r | |
1237 | {\r | |
1238 | FRESULT res = FR_OK;\r | |
53668523 | 1239 | DWORD nxt;\r |
70702af1 L |
1240 | FATFS *fs = obj->fs;\r |
1241 | #if _FS_EXFAT || _USE_TRIM\r | |
1242 | DWORD scl = clst, ecl = clst;\r | |
1243 | #endif\r | |
7b78a5a2 | 1244 | #if _USE_TRIM\r |
70702af1 | 1245 | DWORD rt[2];\r |
53668523 L |
1246 | #endif\r |
1247 | \r | |
70702af1 | 1248 | if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */\r |
53668523 | 1249 | \r |
70702af1 L |
1250 | /* Mark the previous cluster 'EOC' on the FAT if it exists */\r |
1251 | if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {\r | |
1252 | res = put_fat(fs, pclst, 0xFFFFFFFF);\r | |
1253 | if (res != FR_OK) return res;\r | |
1254 | }\r | |
1255 | \r | |
1256 | /* Remove the chain */\r | |
1257 | do {\r | |
1258 | nxt = get_fat(obj, clst); /* Get cluster status */\r | |
1259 | if (nxt == 0) break; /* Empty cluster? */\r | |
1260 | if (nxt == 1) return FR_INT_ERR; /* Internal error? */\r | |
1261 | if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */\r | |
1262 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r | |
1263 | res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */\r | |
1264 | if (res != FR_OK) return res;\r | |
1265 | }\r | |
1266 | if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */\r | |
1267 | fs->free_clst++;\r | |
1268 | fs->fsi_flag |= 1;\r | |
1269 | }\r | |
1270 | #if _FS_EXFAT || _USE_TRIM\r | |
1271 | if (ecl + 1 == nxt) { /* Is next cluster contiguous? */\r | |
1272 | ecl = nxt;\r | |
1273 | } else { /* End of contiguous cluster block */ \r | |
1274 | #if _FS_EXFAT\r | |
1275 | if (fs->fs_type == FS_EXFAT) {\r | |
1276 | res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */\r | |
1277 | if (res != FR_OK) return res;\r | |
53668523 | 1278 | }\r |
70702af1 | 1279 | #endif\r |
7b78a5a2 | 1280 | #if _USE_TRIM\r |
70702af1 L |
1281 | rt[0] = clust2sect(fs, scl); /* Start sector */\r |
1282 | rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */\r | |
1283 | disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Inform device the block can be erased */\r | |
53668523 | 1284 | #endif\r |
70702af1 | 1285 | scl = ecl = nxt;\r |
53668523 | 1286 | }\r |
70702af1 L |
1287 | #endif\r |
1288 | clst = nxt; /* Next cluster */\r | |
1289 | } while (clst < fs->n_fatent); /* Repeat while not the last link */\r | |
53668523 | 1290 | \r |
70702af1 L |
1291 | #if _FS_EXFAT\r |
1292 | if (fs->fs_type == FS_EXFAT) {\r | |
1293 | if (pclst == 0) { /* Does object have no chain? */\r | |
1294 | obj->stat = 0; /* Change the object status 'initial' */\r | |
1295 | } else {\r | |
1296 | if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Did the chain got contiguous? */\r | |
1297 | obj->stat = 2; /* Change the object status 'contiguous' */\r | |
1298 | }\r | |
1299 | }\r | |
1300 | }\r | |
53668523 | 1301 | #endif\r |
70702af1 L |
1302 | return FR_OK;\r |
1303 | }\r | |
53668523 L |
1304 | \r |
1305 | \r | |
1306 | \r | |
1307 | \r | |
1308 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 1309 | /* FAT handling - Stretch a chain or Create a new chain */\r |
53668523 | 1310 | /*-----------------------------------------------------------------------*/\r |
53668523 L |
1311 | static\r |
1312 | DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */\r | |
70702af1 L |
1313 | _FDID* obj, /* Corresponding object */\r |
1314 | DWORD clst /* Cluster# to stretch, 0:Create a new chain */\r | |
53668523 L |
1315 | )\r |
1316 | {\r | |
1317 | DWORD cs, ncl, scl;\r | |
1318 | FRESULT res;\r | |
70702af1 | 1319 | FATFS *fs = obj->fs;\r |
53668523 L |
1320 | \r |
1321 | \r | |
70702af1 L |
1322 | if (clst == 0) { /* Create a new chain */\r |
1323 | scl = fs->last_clst; /* Get suggested cluster to start from */\r | |
1324 | if (scl == 0 || scl >= fs->n_fatent) scl = 1;\r | |
53668523 | 1325 | }\r |
70702af1 L |
1326 | else { /* Stretch current chain */\r |
1327 | cs = get_fat(obj, clst); /* Check the cluster status */\r | |
1328 | if (cs < 2) return 1; /* Invalid value */\r | |
53668523 L |
1329 | if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */\r |
1330 | if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */\r | |
1331 | scl = clst;\r | |
1332 | }\r | |
1333 | \r | |
70702af1 L |
1334 | #if _FS_EXFAT\r |
1335 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
1336 | ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */\r | |
1337 | if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */\r | |
1338 | res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */\r | |
1339 | if (res == FR_INT_ERR) return 1;\r | |
1340 | if (res == FR_DISK_ERR) return 0xFFFFFFFF;\r | |
1341 | if (clst == 0) { /* Is it a new chain? */\r | |
1342 | obj->stat = 2; /* Set status 'contiguous chain' */\r | |
1343 | } else { /* This is a stretched chain */\r | |
1344 | if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */\r | |
1345 | obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */\r | |
1346 | obj->stat = 3; /* Change status 'just fragmented' */\r | |
1347 | }\r | |
1348 | }\r | |
1349 | } else\r | |
1350 | #endif\r | |
1351 | { /* On the FAT12/16/32 volume */\r | |
1352 | ncl = scl; /* Start cluster */\r | |
1353 | for (;;) {\r | |
1354 | ncl++; /* Next cluster */\r | |
1355 | if (ncl >= fs->n_fatent) { /* Check wrap-around */\r | |
1356 | ncl = 2;\r | |
1357 | if (ncl > scl) return 0; /* No free cluster */\r | |
1358 | }\r | |
1359 | cs = get_fat(obj, ncl); /* Get the cluster status */\r | |
1360 | if (cs == 0) break; /* Found a free cluster */\r | |
1361 | if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* An error occurred */\r | |
1362 | if (ncl == scl) return 0; /* No free cluster */\r | |
53668523 | 1363 | }\r |
53668523 L |
1364 | }\r |
1365 | \r | |
70702af1 L |
1366 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT && obj->stat == 2) { /* Is it a contiguous chain? */\r |
1367 | res = FR_OK; /* FAT does not need to be written */\r | |
1368 | } else {\r | |
1369 | res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */\r | |
1370 | if (res == FR_OK && clst) {\r | |
1371 | res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */\r | |
53668523 | 1372 | }\r |
70702af1 L |
1373 | }\r |
1374 | \r | |
1375 | if (res == FR_OK) { /* Update FSINFO if function succeeded. */\r | |
1376 | fs->last_clst = ncl;\r | |
1377 | if (fs->free_clst < fs->n_fatent - 2) fs->free_clst--;\r | |
1378 | fs->fsi_flag |= 1;\r | |
53668523 | 1379 | } else {\r |
70702af1 | 1380 | ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Create error status */\r |
53668523 L |
1381 | }\r |
1382 | \r | |
70702af1 | 1383 | return ncl; /* Return new cluster number or error status */\r |
53668523 | 1384 | }\r |
70702af1 | 1385 | \r |
53668523 L |
1386 | #endif /* !_FS_READONLY */\r |
1387 | \r | |
1388 | \r | |
1389 | \r | |
1390 | \r | |
70702af1 | 1391 | #if _USE_FASTSEEK\r |
53668523 L |
1392 | /*-----------------------------------------------------------------------*/\r |
1393 | /* FAT handling - Convert offset into cluster with link map table */\r | |
1394 | /*-----------------------------------------------------------------------*/\r | |
1395 | \r | |
53668523 L |
1396 | static\r |
1397 | DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */\r | |
1398 | FIL* fp, /* Pointer to the file object */\r | |
70702af1 | 1399 | FSIZE_t ofs /* File offset to be converted to cluster# */\r |
53668523 L |
1400 | )\r |
1401 | {\r | |
1402 | DWORD cl, ncl, *tbl;\r | |
70702af1 | 1403 | FATFS *fs = fp->obj.fs;\r |
53668523 L |
1404 | \r |
1405 | \r | |
1406 | tbl = fp->cltbl + 1; /* Top of CLMT */\r | |
70702af1 | 1407 | cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */\r |
53668523 L |
1408 | for (;;) {\r |
1409 | ncl = *tbl++; /* Number of cluters in the fragment */\r | |
70702af1 | 1410 | if (ncl == 0) return 0; /* End of table? (error) */\r |
53668523 L |
1411 | if (cl < ncl) break; /* In this fragment? */\r |
1412 | cl -= ncl; tbl++; /* Next fragment */\r | |
1413 | }\r | |
1414 | return cl + *tbl; /* Return the cluster number */\r | |
1415 | }\r | |
70702af1 | 1416 | \r |
53668523 L |
1417 | #endif /* _USE_FASTSEEK */\r |
1418 | \r | |
1419 | \r | |
1420 | \r | |
1421 | \r | |
1422 | /*-----------------------------------------------------------------------*/\r | |
1423 | /* Directory handling - Set directory index */\r | |
1424 | /*-----------------------------------------------------------------------*/\r | |
1425 | \r | |
1426 | static\r | |
70702af1 | 1427 | FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */\r |
53668523 | 1428 | DIR* dp, /* Pointer to directory object */\r |
70702af1 | 1429 | DWORD ofs /* Offset of directory table */\r |
53668523 L |
1430 | )\r |
1431 | {\r | |
70702af1 L |
1432 | DWORD csz, clst;\r |
1433 | FATFS *fs = dp->obj.fs;\r | |
53668523 L |
1434 | \r |
1435 | \r | |
70702af1 | 1436 | if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */\r |
53668523 | 1437 | return FR_INT_ERR;\r |
70702af1 L |
1438 | }\r |
1439 | dp->dptr = ofs; /* Set current offset */\r | |
1440 | clst = dp->obj.sclust; /* Table start cluster (0:root) */\r | |
1441 | if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */\r | |
1442 | clst = fs->dirbase;\r | |
1443 | if (_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */\r | |
1444 | }\r | |
53668523 L |
1445 | \r |
1446 | if (clst == 0) { /* Static table (root-directory in FAT12/16) */\r | |
70702af1 L |
1447 | if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */\r |
1448 | dp->sect = fs->dirbase;\r | |
1449 | \r | |
1450 | } else { /* Dynamic table (sub-directory or root-directory in FAT32+) */\r | |
1451 | csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */\r | |
1452 | while (ofs >= csz) { /* Follow cluster chain */\r | |
1453 | clst = get_fat(&dp->obj, clst); /* Get next cluster */\r | |
53668523 | 1454 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */\r |
70702af1 L |
1455 | if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */\r |
1456 | ofs -= csz;\r | |
53668523 | 1457 | }\r |
70702af1 | 1458 | dp->sect = clust2sect(fs, clst);\r |
53668523 | 1459 | }\r |
70702af1 L |
1460 | dp->clust = clst; /* Current cluster# */\r |
1461 | if (!dp->sect) return FR_INT_ERR;\r | |
1462 | dp->sect += ofs / SS(fs); /* Sector# of the directory entry */\r | |
1463 | dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */\r | |
53668523 L |
1464 | \r |
1465 | return FR_OK;\r | |
1466 | }\r | |
1467 | \r | |
1468 | \r | |
1469 | \r | |
1470 | \r | |
1471 | /*-----------------------------------------------------------------------*/\r | |
1472 | /* Directory handling - Move directory table index next */\r | |
1473 | /*-----------------------------------------------------------------------*/\r | |
1474 | \r | |
1475 | static\r | |
70702af1 | 1476 | FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */\r |
53668523 L |
1477 | DIR* dp, /* Pointer to the directory object */\r |
1478 | int stretch /* 0: Do not stretch table, 1: Stretch table if needed */\r | |
1479 | )\r | |
1480 | {\r | |
70702af1 L |
1481 | DWORD ofs, clst;\r |
1482 | FATFS *fs = dp->obj.fs;\r | |
1483 | #if !_FS_READONLY\r | |
1484 | UINT n;\r | |
1485 | #endif\r | |
53668523 | 1486 | \r |
70702af1 L |
1487 | ofs = dp->dptr + SZDIRE; /* Next entry */\r |
1488 | if (!dp->sect || ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE; /* Report EOT when offset has reached max value */\r | |
53668523 | 1489 | \r |
70702af1 L |
1490 | if (ofs % SS(fs) == 0) { /* Sector changed? */\r |
1491 | dp->sect++; /* Next sector */\r | |
53668523 L |
1492 | \r |
1493 | if (!dp->clust) { /* Static table */\r | |
70702af1 L |
1494 | if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */\r |
1495 | dp->sect = 0; return FR_NO_FILE;\r | |
1496 | }\r | |
53668523 L |
1497 | }\r |
1498 | else { /* Dynamic table */\r | |
70702af1 L |
1499 | if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */\r |
1500 | clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */\r | |
1501 | if (clst <= 1) return FR_INT_ERR; /* Internal error */\r | |
1502 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */\r | |
1503 | if (clst >= fs->n_fatent) { /* Reached end of dynamic table */\r | |
53668523 | 1504 | #if !_FS_READONLY\r |
70702af1 L |
1505 | if (!stretch) { /* If no stretch, report EOT */\r |
1506 | dp->sect = 0; return FR_NO_FILE;\r | |
1507 | }\r | |
1508 | clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */\r | |
53668523 | 1509 | if (clst == 0) return FR_DENIED; /* No free cluster */\r |
70702af1 L |
1510 | if (clst == 1) return FR_INT_ERR; /* Internal error */\r |
1511 | if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */\r | |
1512 | /* Clean-up the stretched table */\r | |
1513 | if (_FS_EXFAT) dp->obj.stat |= 4; /* The directory needs to be updated */\r | |
1514 | if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */\r | |
1515 | mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */\r | |
1516 | for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) { /* Fill the new cluster with 0 */\r | |
1517 | fs->wflag = 1;\r | |
1518 | if (sync_window(fs) != FR_OK) return FR_DISK_ERR;\r | |
53668523 | 1519 | }\r |
70702af1 | 1520 | fs->winsect -= n; /* Restore window offset */\r |
53668523 | 1521 | #else\r |
70702af1 L |
1522 | if (!stretch) dp->sect = 0; /* If no stretch, report EOT (this is to suppress warning) */\r |
1523 | dp->sect = 0; return FR_NO_FILE; /* Report EOT */\r | |
53668523 L |
1524 | #endif\r |
1525 | }\r | |
70702af1 L |
1526 | dp->clust = clst; /* Initialize data for new cluster */\r |
1527 | dp->sect = clust2sect(fs, clst);\r | |
53668523 L |
1528 | }\r |
1529 | }\r | |
1530 | }\r | |
70702af1 L |
1531 | dp->dptr = ofs; /* Current entry */\r |
1532 | dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */\r | |
53668523 L |
1533 | \r |
1534 | return FR_OK;\r | |
1535 | }\r | |
1536 | \r | |
1537 | \r | |
1538 | \r | |
1539 | \r | |
70702af1 | 1540 | #if !_FS_READONLY\r |
53668523 | 1541 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1542 | /* Directory handling - Reserve a block of directory entries */\r |
53668523 L |
1543 | /*-----------------------------------------------------------------------*/\r |
1544 | \r | |
53668523 | 1545 | static\r |
70702af1 L |
1546 | FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */\r |
1547 | DIR* dp, /* Pointer to the directory object */\r | |
1548 | UINT nent /* Number of contiguous entries to allocate */\r | |
53668523 L |
1549 | )\r |
1550 | {\r | |
1551 | FRESULT res;\r | |
1552 | UINT n;\r | |
70702af1 | 1553 | FATFS *fs = dp->obj.fs;\r |
53668523 L |
1554 | \r |
1555 | \r | |
1556 | res = dir_sdi(dp, 0);\r | |
1557 | if (res == FR_OK) {\r | |
1558 | n = 0;\r | |
1559 | do {\r | |
70702af1 | 1560 | res = move_window(fs, dp->sect);\r |
53668523 | 1561 | if (res != FR_OK) break;\r |
70702af1 L |
1562 | #if _FS_EXFAT\r |
1563 | if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {\r | |
1564 | #else\r | |
1565 | if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {\r | |
1566 | #endif\r | |
7b78a5a2 | 1567 | if (++n == nent) break; /* A block of contiguous free entries is found */\r |
53668523 L |
1568 | } else {\r |
1569 | n = 0; /* Not a blank entry. Restart to search */\r | |
1570 | }\r | |
70702af1 L |
1571 | res = dir_next(dp, 1);\r |
1572 | } while (res == FR_OK); /* Next entry with table stretch enabled */\r | |
53668523 | 1573 | }\r |
70702af1 | 1574 | \r |
53668523 L |
1575 | if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */\r |
1576 | return res;\r | |
1577 | }\r | |
70702af1 L |
1578 | \r |
1579 | #endif /* !_FS_READONLY */\r | |
53668523 L |
1580 | \r |
1581 | \r | |
1582 | \r | |
1583 | \r | |
1584 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 1585 | /* FAT: Directory handling - Load/Store start cluster number */\r |
53668523 L |
1586 | /*-----------------------------------------------------------------------*/\r |
1587 | \r | |
1588 | static\r | |
70702af1 L |
1589 | DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */\r |
1590 | FATFS* fs, /* Pointer to the fs object */\r | |
1591 | const BYTE* dir /* Pointer to the key entry */\r | |
53668523 L |
1592 | )\r |
1593 | {\r | |
1594 | DWORD cl;\r | |
1595 | \r | |
70702af1 L |
1596 | cl = ld_word(dir + DIR_FstClusLO);\r |
1597 | if (fs->fs_type == FS_FAT32) {\r | |
1598 | cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;\r | |
1599 | }\r | |
53668523 L |
1600 | \r |
1601 | return cl;\r | |
1602 | }\r | |
1603 | \r | |
1604 | \r | |
1605 | #if !_FS_READONLY\r | |
1606 | static\r | |
1607 | void st_clust (\r | |
70702af1 L |
1608 | FATFS* fs, /* Pointer to the fs object */\r |
1609 | BYTE* dir, /* Pointer to the key entry */\r | |
53668523 L |
1610 | DWORD cl /* Value to be set */\r |
1611 | )\r | |
1612 | {\r | |
70702af1 L |
1613 | st_word(dir + DIR_FstClusLO, (WORD)cl);\r |
1614 | if (fs->fs_type == FS_FAT32) {\r | |
1615 | st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));\r | |
1616 | }\r | |
53668523 L |
1617 | }\r |
1618 | #endif\r | |
1619 | \r | |
1620 | \r | |
1621 | \r | |
70702af1 L |
1622 | #if _USE_LFN != 0\r |
1623 | /*------------------------------------------------------------------------*/\r | |
1624 | /* FAT-LFN: LFN handling */\r | |
1625 | /*------------------------------------------------------------------------*/\r | |
53668523 L |
1626 | static\r |
1627 | const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */\r | |
1628 | \r | |
1629 | \r | |
70702af1 L |
1630 | /*--------------------------------------------------------*/\r |
1631 | /* FAT-LFN: Compare a part of file name with an LFN entry */\r | |
1632 | /*--------------------------------------------------------*/\r | |
53668523 | 1633 | static\r |
70702af1 L |
1634 | int cmp_lfn ( /* 1:matched, 0:not matched */\r |
1635 | const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */\r | |
1636 | BYTE* dir /* Pointer to the directory entry containing the part of LFN */\r | |
53668523 L |
1637 | )\r |
1638 | {\r | |
1639 | UINT i, s;\r | |
1640 | WCHAR wc, uc;\r | |
1641 | \r | |
1642 | \r | |
70702af1 L |
1643 | if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */\r |
1644 | \r | |
1645 | i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */\r | |
1646 | \r | |
1647 | for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */\r | |
1648 | uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */\r | |
1649 | if (wc) {\r | |
1650 | if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */\r | |
1651 | return 0; /* Not matched */\r | |
1652 | }\r | |
1653 | wc = uc;\r | |
53668523 | 1654 | } else {\r |
70702af1 | 1655 | if (uc != 0xFFFF) return 0; /* Check filler */\r |
53668523 | 1656 | }\r |
70702af1 | 1657 | }\r |
53668523 | 1658 | \r |
70702af1 | 1659 | if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0; /* Last segment matched but different length */\r |
53668523 | 1660 | \r |
70702af1 | 1661 | return 1; /* The part of LFN matched */\r |
53668523 L |
1662 | }\r |
1663 | \r | |
1664 | \r | |
70702af1 L |
1665 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT\r |
1666 | /*-----------------------------------------------------*/\r | |
1667 | /* FAT-LFN: Pick a part of file name from an LFN entry */\r | |
1668 | /*-----------------------------------------------------*/\r | |
53668523 | 1669 | static\r |
70702af1 L |
1670 | int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */\r |
1671 | WCHAR* lfnbuf, /* Pointer to the LFN working buffer */\r | |
1672 | BYTE* dir /* Pointer to the LFN entry */\r | |
53668523 L |
1673 | )\r |
1674 | {\r | |
1675 | UINT i, s;\r | |
1676 | WCHAR wc, uc;\r | |
1677 | \r | |
1678 | \r | |
70702af1 L |
1679 | if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */\r |
1680 | \r | |
53668523 L |
1681 | i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */\r |
1682 | \r | |
70702af1 L |
1683 | for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */\r |
1684 | uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */\r | |
1685 | if (wc) {\r | |
53668523 L |
1686 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */\r |
1687 | lfnbuf[i++] = wc = uc; /* Store it */\r | |
1688 | } else {\r | |
1689 | if (uc != 0xFFFF) return 0; /* Check filler */\r | |
1690 | }\r | |
70702af1 | 1691 | }\r |
53668523 | 1692 | \r |
70702af1 | 1693 | if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */\r |
53668523 L |
1694 | if (i >= _MAX_LFN) return 0; /* Buffer overflow? */\r |
1695 | lfnbuf[i] = 0;\r | |
1696 | }\r | |
1697 | \r | |
70702af1 | 1698 | return 1; /* The part of LFN is valid */\r |
53668523 | 1699 | }\r |
70702af1 | 1700 | #endif\r |
53668523 L |
1701 | \r |
1702 | \r | |
1703 | #if !_FS_READONLY\r | |
70702af1 L |
1704 | /*-----------------------------------------*/\r |
1705 | /* FAT-LFN: Create an entry of LFN entries */\r | |
1706 | /*-----------------------------------------*/\r | |
53668523 | 1707 | static\r |
70702af1 L |
1708 | void put_lfn (\r |
1709 | const WCHAR* lfn, /* Pointer to the LFN */\r | |
1710 | BYTE* dir, /* Pointer to the LFN entry to be created */\r | |
1711 | BYTE ord, /* LFN order (1-20) */\r | |
1712 | BYTE sum /* Checksum of the corresponding SFN */\r | |
53668523 L |
1713 | )\r |
1714 | {\r | |
1715 | UINT i, s;\r | |
1716 | WCHAR wc;\r | |
1717 | \r | |
1718 | \r | |
70702af1 | 1719 | dir[LDIR_Chksum] = sum; /* Set checksum */\r |
53668523 L |
1720 | dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */\r |
1721 | dir[LDIR_Type] = 0;\r | |
70702af1 | 1722 | st_word(dir + LDIR_FstClusLO, 0);\r |
53668523 | 1723 | \r |
70702af1 | 1724 | i = (ord - 1) * 13; /* Get offset in the LFN working buffer */\r |
53668523 L |
1725 | s = wc = 0;\r |
1726 | do {\r | |
70702af1 L |
1727 | if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */\r |
1728 | st_word(dir + LfnOfs[s], wc); /* Put it */\r | |
1729 | if (wc == 0) wc = 0xFFFF; /* Padding characters for left locations */\r | |
53668523 | 1730 | } while (++s < 13);\r |
70702af1 | 1731 | if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */\r |
53668523 L |
1732 | dir[LDIR_Ord] = ord; /* Set the LFN order */\r |
1733 | }\r | |
1734 | \r | |
70702af1 L |
1735 | #endif /* !_FS_READONLY */\r |
1736 | #endif /* _USE_LFN != 0 */\r | |
53668523 L |
1737 | \r |
1738 | \r | |
1739 | \r | |
70702af1 | 1740 | #if _USE_LFN != 0 && !_FS_READONLY\r |
53668523 | 1741 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1742 | /* FAT-LFN: Create a Numbered SFN */\r |
53668523 | 1743 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1744 | \r |
53668523 L |
1745 | static\r |
1746 | void gen_numname (\r | |
1747 | BYTE* dst, /* Pointer to the buffer to store numbered SFN */\r | |
1748 | const BYTE* src, /* Pointer to SFN */\r | |
1749 | const WCHAR* lfn, /* Pointer to LFN */\r | |
1750 | UINT seq /* Sequence number */\r | |
1751 | )\r | |
1752 | {\r | |
1753 | BYTE ns[8], c;\r | |
1754 | UINT i, j;\r | |
70702af1 L |
1755 | WCHAR wc;\r |
1756 | DWORD sr;\r | |
53668523 L |
1757 | \r |
1758 | \r | |
1759 | mem_cpy(dst, src, 11);\r | |
1760 | \r | |
70702af1 L |
1761 | if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */\r |
1762 | sr = seq;\r | |
53668523 L |
1763 | while (*lfn) { /* Create a CRC */\r |
1764 | wc = *lfn++;\r | |
1765 | for (i = 0; i < 16; i++) {\r | |
1766 | sr = (sr << 1) + (wc & 1);\r | |
1767 | wc >>= 1;\r | |
1768 | if (sr & 0x10000) sr ^= 0x11021;\r | |
1769 | }\r | |
1770 | }\r | |
1771 | seq = (UINT)sr;\r | |
1772 | }\r | |
1773 | \r | |
1774 | /* itoa (hexdecimal) */\r | |
1775 | i = 7;\r | |
1776 | do {\r | |
70702af1 | 1777 | c = (BYTE)((seq % 16) + '0');\r |
53668523 L |
1778 | if (c > '9') c += 7;\r |
1779 | ns[i--] = c;\r | |
1780 | seq /= 16;\r | |
1781 | } while (seq);\r | |
1782 | ns[i] = '~';\r | |
1783 | \r | |
1784 | /* Append the number */\r | |
1785 | for (j = 0; j < i && dst[j] != ' '; j++) {\r | |
1786 | if (IsDBCS1(dst[j])) {\r | |
1787 | if (j == i - 1) break;\r | |
1788 | j++;\r | |
1789 | }\r | |
1790 | }\r | |
1791 | do {\r | |
1792 | dst[j++] = (i < 8) ? ns[i++] : ' ';\r | |
1793 | } while (j < 8);\r | |
1794 | }\r | |
70702af1 | 1795 | #endif /* _USE_LFN != 0 && !_FS_READONLY */\r |
53668523 L |
1796 | \r |
1797 | \r | |
1798 | \r | |
70702af1 | 1799 | #if _USE_LFN != 0\r |
53668523 | 1800 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1801 | /* FAT-LFN: Calculate checksum of an SFN entry */\r |
53668523 | 1802 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1803 | \r |
53668523 L |
1804 | static\r |
1805 | BYTE sum_sfn (\r | |
1806 | const BYTE* dir /* Pointer to the SFN entry */\r | |
1807 | )\r | |
1808 | {\r | |
1809 | BYTE sum = 0;\r | |
1810 | UINT n = 11;\r | |
1811 | \r | |
1812 | do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);\r | |
1813 | return sum;\r | |
1814 | }\r | |
53668523 | 1815 | \r |
70702af1 | 1816 | #endif /* _USE_LFN != 0 */\r |
53668523 L |
1817 | \r |
1818 | \r | |
1819 | \r | |
70702af1 | 1820 | #if _FS_EXFAT\r |
53668523 | 1821 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 1822 | /* exFAT: Checksum */\r |
53668523 L |
1823 | /*-----------------------------------------------------------------------*/\r |
1824 | \r | |
1825 | static\r | |
70702af1 L |
1826 | WORD xdir_sum ( /* Get checksum of the directoly block */\r |
1827 | const BYTE* dir /* Directory entry block to be calculated */\r | |
53668523 L |
1828 | )\r |
1829 | {\r | |
70702af1 L |
1830 | UINT i, szblk;\r |
1831 | WORD sum;\r | |
1832 | \r | |
1833 | \r | |
1834 | szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;\r | |
1835 | for (i = sum = 0; i < szblk; i++) {\r | |
1836 | if (i == XDIR_SetSum) { /* Skip sum field */\r | |
1837 | i++;\r | |
1838 | } else {\r | |
1839 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];\r | |
1840 | }\r | |
1841 | }\r | |
1842 | return sum;\r | |
1843 | }\r | |
1844 | \r | |
1845 | \r | |
1846 | \r | |
1847 | static\r | |
1848 | WORD xname_sum ( /* Get check sum (to be used as hash) of the name */\r | |
1849 | const WCHAR* name /* File name to be calculated */\r | |
1850 | )\r | |
1851 | {\r | |
1852 | WCHAR chr;\r | |
1853 | WORD sum = 0;\r | |
1854 | \r | |
1855 | \r | |
1856 | while ((chr = *name++) != 0) {\r | |
1857 | chr = ff_wtoupper(chr); /* File name needs to be ignored case */\r | |
1858 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);\r | |
1859 | sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);\r | |
1860 | }\r | |
1861 | return sum;\r | |
1862 | }\r | |
1863 | \r | |
1864 | \r | |
1865 | #if !_FS_READONLY && _USE_MKFS\r | |
1866 | static\r | |
1867 | DWORD xsum32 (\r | |
1868 | BYTE dat, /* Data to be sumed */\r | |
1869 | DWORD sum /* Previous value */\r | |
1870 | )\r | |
1871 | {\r | |
1872 | sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;\r | |
1873 | return sum;\r | |
1874 | }\r | |
53668523 L |
1875 | #endif\r |
1876 | \r | |
70702af1 L |
1877 | \r |
1878 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2\r | |
1879 | /*------------------------------------------------------*/\r | |
1880 | /* exFAT: Get object information from a directory block */\r | |
1881 | /*------------------------------------------------------*/\r | |
1882 | \r | |
1883 | static\r | |
1884 | void get_xdir_info (\r | |
1885 | BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */\r | |
1886 | FILINFO* fno /* Buffer to store the extracted file information */\r | |
1887 | )\r | |
1888 | {\r | |
1889 | UINT di, si;\r | |
1890 | WCHAR w;\r | |
1891 | #if !_LFN_UNICODE\r | |
1892 | UINT nc;\r | |
1893 | #endif\r | |
1894 | \r | |
1895 | /* Get file name */\r | |
1896 | #if _LFN_UNICODE\r | |
1897 | if (dirb[XDIR_NumName] <= _MAX_LFN) {\r | |
1898 | for (si = SZDIRE * 2, di = 0; di < dirb[XDIR_NumName]; si += 2, di++) {\r | |
1899 | if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */\r | |
1900 | w = ld_word(dirb + si); /* Get a character */\r | |
1901 | fno->fname[di] = w; /* Store it */\r | |
1902 | }\r | |
1903 | } else {\r | |
1904 | di = 0; /* Buffer overflow and inaccessible object */\r | |
1905 | }\r | |
1906 | #else\r | |
1907 | for (si = SZDIRE * 2, di = nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) {\r | |
1908 | if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */\r | |
1909 | w = ld_word(dirb + si); /* Get a character */\r | |
1910 | w = ff_convert(w, 0); /* Unicode -> OEM */\r | |
1911 | if (w == 0) { di = 0; break; } /* Could not be converted and inaccessible object */\r | |
1912 | if (_DF1S && w >= 0x100) { /* Put 1st byte if it is a DBC (always false at SBCS cfg) */\r | |
1913 | fno->fname[di++] = (char)(w >> 8);\r | |
1914 | }\r | |
1915 | if (di >= _MAX_LFN) { di = 0; break; } /* Buffer overflow and inaccessible object */\r | |
1916 | fno->fname[di++] = (char)w;\r | |
1917 | }\r | |
1918 | #endif\r | |
1919 | if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object? */\r | |
1920 | fno->fname[di] = 0; /* Terminate file name */\r | |
1921 | \r | |
1922 | fno->altname[0] = 0; /* No SFN */\r | |
1923 | fno->fattrib = dirb[XDIR_Attr]; /* Attribute */\r | |
1924 | fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */\r | |
1925 | fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */\r | |
1926 | fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */\r | |
1927 | }\r | |
1928 | \r | |
1929 | #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */\r | |
1930 | \r | |
1931 | \r | |
1932 | /*-----------------------------------*/\r | |
1933 | /* exFAT: Get a directry entry block */\r | |
1934 | /*-----------------------------------*/\r | |
1935 | \r | |
1936 | static\r | |
1937 | FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */\r | |
1938 | DIR* dp /* Pointer to the reading direcotry object pointing the 85 entry */\r | |
1939 | )\r | |
1940 | {\r | |
1941 | FRESULT res;\r | |
1942 | UINT i, nent;\r | |
1943 | BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */\r | |
1944 | \r | |
1945 | \r | |
1946 | /* Load 85 entry */\r | |
1947 | res = move_window(dp->obj.fs, dp->sect);\r | |
1948 | if (res != FR_OK) return res;\r | |
1949 | if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR;\r | |
1950 | mem_cpy(dirb, dp->dir, SZDIRE);\r | |
1951 | nent = dirb[XDIR_NumSec] + 1;\r | |
1952 | \r | |
1953 | /* Load C0 entry */\r | |
1954 | res = dir_next(dp, 0);\r | |
1955 | if (res != FR_OK) return res;\r | |
1956 | res = move_window(dp->obj.fs, dp->sect);\r | |
53668523 | 1957 | if (res != FR_OK) return res;\r |
70702af1 L |
1958 | if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR;\r |
1959 | mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE);\r | |
1960 | \r | |
1961 | /* Load C1 entries */\r | |
1962 | if (nent < 3 || nent > 19) return FR_NO_FILE;\r | |
1963 | i = SZDIRE * 2; nent *= SZDIRE;\r | |
1964 | do {\r | |
1965 | res = dir_next(dp, 0);\r | |
1966 | if (res != FR_OK) return res;\r | |
1967 | res = move_window(dp->obj.fs, dp->sect);\r | |
1968 | if (res != FR_OK) return res;\r | |
1969 | if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR;\r | |
1970 | mem_cpy(dirb + i, dp->dir, SZDIRE);\r | |
1971 | i += SZDIRE;\r | |
1972 | } while (i < nent);\r | |
1973 | \r | |
1974 | /* Sanity check */\r | |
1975 | if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;\r | |
1976 | \r | |
1977 | return FR_OK;\r | |
1978 | }\r | |
1979 | \r | |
53668523 | 1980 | \r |
70702af1 L |
1981 | #if !_FS_READONLY || _FS_RPATH != 0 \r |
1982 | /*------------------------------------------------*/\r | |
1983 | /* exFAT: Load the object's directory entry block */\r | |
1984 | /*------------------------------------------------*/\r | |
1985 | static\r | |
1986 | FRESULT load_obj_dir ( \r | |
1987 | DIR* dp, /* Blank directory object to be used to access containing direcotry */\r | |
1988 | const _FDID* obj /* Object with containing directory information */\r | |
1989 | )\r | |
1990 | {\r | |
1991 | FRESULT res;\r | |
1992 | \r | |
1993 | \r | |
1994 | /* Open object containing directory */\r | |
1995 | dp->obj.fs = obj->fs;\r | |
1996 | dp->obj.sclust = obj->c_scl;\r | |
1997 | dp->obj.stat = (BYTE)obj->c_size;\r | |
1998 | dp->obj.objsize = obj->c_size & 0xFFFFFF00;\r | |
1999 | dp->blk_ofs = obj->c_ofs;\r | |
2000 | \r | |
2001 | res = dir_sdi(dp, dp->blk_ofs); /* Goto the block location */\r | |
2002 | if (res == FR_OK) {\r | |
2003 | res = load_xdir(dp); /* Load the object's entry block */\r | |
2004 | }\r | |
2005 | return res;\r | |
2006 | }\r | |
53668523 | 2007 | #endif\r |
70702af1 L |
2008 | \r |
2009 | \r | |
2010 | #if !_FS_READONLY\r | |
2011 | /*-----------------------------------------------*/\r | |
2012 | /* exFAT: Store the directory block to the media */\r | |
2013 | /*-----------------------------------------------*/\r | |
2014 | static\r | |
2015 | FRESULT store_xdir (\r | |
2016 | DIR* dp /* Pointer to the direcotry object */\r | |
2017 | )\r | |
2018 | {\r | |
2019 | FRESULT res;\r | |
2020 | UINT nent;\r | |
2021 | BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */\r | |
2022 | \r | |
2023 | /* Create set sum */\r | |
2024 | st_word(dirb + XDIR_SetSum, xdir_sum(dirb));\r | |
2025 | nent = dirb[XDIR_NumSec] + 1;\r | |
2026 | \r | |
2027 | /* Store the set of directory to the volume */\r | |
2028 | res = dir_sdi(dp, dp->blk_ofs);\r | |
2029 | while (res == FR_OK) {\r | |
2030 | res = move_window(dp->obj.fs, dp->sect);\r | |
2031 | if (res != FR_OK) break;\r | |
2032 | mem_cpy(dp->dir, dirb, SZDIRE);\r | |
2033 | dp->obj.fs->wflag = 1;\r | |
2034 | if (--nent == 0) break;\r | |
2035 | dirb += SZDIRE;\r | |
2036 | res = dir_next(dp, 0);\r | |
2037 | }\r | |
2038 | return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;\r | |
2039 | }\r | |
2040 | \r | |
2041 | \r | |
2042 | \r | |
2043 | /*-------------------------------------------*/\r | |
2044 | /* exFAT: Create a new directory enrty block */\r | |
2045 | /*-------------------------------------------*/\r | |
2046 | \r | |
2047 | static\r | |
2048 | void create_xdir (\r | |
2049 | BYTE* dirb, /* Pointer to the direcotry entry block buffer */\r | |
2050 | const WCHAR* lfn /* Pointer to the nul terminated file name */\r | |
2051 | )\r | |
2052 | {\r | |
2053 | UINT i;\r | |
2054 | BYTE nb, nc;\r | |
2055 | WCHAR chr;\r | |
2056 | \r | |
2057 | \r | |
2058 | mem_set(dirb, 0, 2 * SZDIRE); /* Initialize 85+C0 entry */\r | |
2059 | dirb[XDIR_Type] = 0x85;\r | |
2060 | dirb[XDIR_Type + SZDIRE] = 0xC0;\r | |
2061 | st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */\r | |
2062 | \r | |
2063 | i = SZDIRE * 2; /* C1 offset */\r | |
2064 | nc = 0; nb = 1; chr = 1;\r | |
53668523 | 2065 | do {\r |
70702af1 L |
2066 | dirb[i++] = 0xC1; dirb[i++] = 0; /* Entry type C1 */\r |
2067 | do { /* Fill name field */\r | |
2068 | if (chr && (chr = lfn[nc]) != 0) nc++; /* Get a character if exist */\r | |
2069 | st_word(dirb + i, chr); i += 2; /* Store it */\r | |
2070 | } while (i % SZDIRE);\r | |
2071 | nb++;\r | |
2072 | } while (lfn[nc]); /* Fill next entry if any char follows */\r | |
2073 | \r | |
2074 | dirb[XDIR_NumName] = nc; /* Set name length */\r | |
2075 | dirb[XDIR_NumSec] = nb; /* Set number of C0+C1s */\r | |
2076 | }\r | |
2077 | \r | |
2078 | #endif /* !_FS_READONLY */\r | |
2079 | #endif /* _FS_EXFAT */\r | |
2080 | \r | |
2081 | \r | |
2082 | \r | |
2083 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT\r | |
2084 | /*-----------------------------------------------------------------------*/\r | |
2085 | /* Read an object from the directory */\r | |
2086 | /*-----------------------------------------------------------------------*/\r | |
2087 | \r | |
2088 | static\r | |
2089 | FRESULT dir_read (\r | |
2090 | DIR* dp, /* Pointer to the directory object */\r | |
2091 | int vol /* Filtered by 0:file/directory or 1:volume label */\r | |
2092 | )\r | |
2093 | {\r | |
2094 | FRESULT res = FR_NO_FILE;\r | |
2095 | FATFS *fs = dp->obj.fs;\r | |
2096 | BYTE a, c;\r | |
2097 | #if _USE_LFN != 0\r | |
2098 | BYTE ord = 0xFF, sum = 0xFF;\r | |
2099 | #endif\r | |
2100 | \r | |
2101 | while (dp->sect) {\r | |
2102 | res = move_window(fs, dp->sect);\r | |
53668523 | 2103 | if (res != FR_OK) break;\r |
70702af1 L |
2104 | c = dp->dir[DIR_Name]; /* Test for the entry type */\r |
2105 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of the directory */\r | |
2106 | #if _FS_EXFAT\r | |
2107 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
2108 | if (_USE_LABEL && vol) {\r | |
2109 | if (c == 0x83) break; /* Volume label entry? */\r | |
2110 | } else {\r | |
2111 | if (c == 0x85) { /* Start of the file entry block? */\r | |
2112 | dp->blk_ofs = dp->dptr; /* Get location of the block */\r | |
2113 | res = load_xdir(dp); /* Load the entry block */\r | |
2114 | if (res == FR_OK) {\r | |
2115 | dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */\r | |
53668523 | 2116 | }\r |
70702af1 L |
2117 | break;\r |
2118 | }\r | |
2119 | }\r | |
2120 | } else\r | |
2121 | #endif\r | |
2122 | { /* On the FAT12/16/32 volume */\r | |
2123 | dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */\r | |
2124 | #if _USE_LFN != 0 /* LFN configuration */\r | |
2125 | if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */\r | |
2126 | ord = 0xFF;\r | |
2127 | } else {\r | |
2128 | if (a == AM_LFN) { /* An LFN entry is found */\r | |
2129 | if (c & LLEF) { /* Is it start of an LFN sequence? */\r | |
2130 | sum = dp->dir[LDIR_Chksum];\r | |
2131 | c &= (BYTE)~LLEF; ord = c;\r | |
2132 | dp->blk_ofs = dp->dptr;\r | |
2133 | }\r | |
2134 | /* Check LFN validity and capture it */\r | |
2135 | ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;\r | |
2136 | } else { /* An SFN entry is found */\r | |
2137 | if (ord || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */\r | |
2138 | dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */\r | |
2139 | }\r | |
2140 | break;\r | |
53668523 | 2141 | }\r |
53668523 | 2142 | }\r |
53668523 | 2143 | #else /* Non LFN configuration */\r |
70702af1 L |
2144 | if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */\r |
2145 | break;\r | |
2146 | }\r | |
53668523 | 2147 | #endif\r |
70702af1 | 2148 | }\r |
53668523 | 2149 | res = dir_next(dp, 0); /* Next entry */\r |
70702af1 L |
2150 | if (res != FR_OK) break;\r |
2151 | }\r | |
53668523 | 2152 | \r |
70702af1 | 2153 | if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */\r |
53668523 L |
2154 | return res;\r |
2155 | }\r | |
2156 | \r | |
70702af1 | 2157 | #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */\r |
53668523 L |
2158 | \r |
2159 | \r | |
2160 | \r | |
2161 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 2162 | /* Directory handling - Find an object in the directory */\r |
53668523 | 2163 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 2164 | \r |
53668523 | 2165 | static\r |
70702af1 L |
2166 | FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */\r |
2167 | DIR* dp /* Pointer to the directory object with the file name */\r | |
53668523 L |
2168 | )\r |
2169 | {\r | |
2170 | FRESULT res;\r | |
70702af1 L |
2171 | FATFS *fs = dp->obj.fs;\r |
2172 | BYTE c;\r | |
2173 | #if _USE_LFN != 0\r | |
2174 | BYTE a, ord, sum;\r | |
53668523 L |
2175 | #endif\r |
2176 | \r | |
70702af1 L |
2177 | res = dir_sdi(dp, 0); /* Rewind directory object */\r |
2178 | if (res != FR_OK) return res;\r | |
2179 | #if _FS_EXFAT\r | |
2180 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
2181 | BYTE nc;\r | |
2182 | UINT di, ni;\r | |
2183 | WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */\r | |
2184 | \r | |
2185 | while ((res = dir_read(dp, 0)) == FR_OK) { /* Read an item */\r | |
2186 | if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip the comparison if hash value mismatched */\r | |
2187 | for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */\r | |
2188 | if ((di % SZDIRE) == 0) di += 2;\r | |
2189 | if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;\r | |
2190 | }\r | |
2191 | if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */\r | |
2192 | }\r | |
2193 | return res;\r | |
2194 | }\r | |
2195 | #endif\r | |
2196 | /* On the FAT12/16/32 volume */\r | |
2197 | #if _USE_LFN != 0\r | |
2198 | ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */\r | |
2199 | #endif\r | |
2200 | do {\r | |
2201 | res = move_window(fs, dp->sect);\r | |
53668523 | 2202 | if (res != FR_OK) break;\r |
70702af1 | 2203 | c = dp->dir[DIR_Name];\r |
53668523 | 2204 | if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */\r |
70702af1 L |
2205 | #if _USE_LFN != 0 /* LFN configuration */\r |
2206 | dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;\r | |
2207 | if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */\r | |
2208 | ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */\r | |
53668523 L |
2209 | } else {\r |
2210 | if (a == AM_LFN) { /* An LFN entry is found */\r | |
70702af1 L |
2211 | if (!(dp->fn[NSFLAG] & NS_NOLFN)) {\r |
2212 | if (c & LLEF) { /* Is it start of LFN sequence? */\r | |
2213 | sum = dp->dir[LDIR_Chksum];\r | |
2214 | c &= (BYTE)~LLEF; ord = c; /* LFN start order */\r | |
2215 | dp->blk_ofs = dp->dptr; /* Start offset of LFN */\r | |
2216 | }\r | |
2217 | /* Check validity of the LFN entry and compare it with given name */\r | |
2218 | ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;\r | |
53668523 | 2219 | }\r |
53668523 | 2220 | } else { /* An SFN entry is found */\r |
70702af1 L |
2221 | if (!ord && sum == sum_sfn(dp->dir)) break; /* LFN matched? */\r |
2222 | if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */\r | |
2223 | ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */\r | |
53668523 L |
2224 | }\r |
2225 | }\r | |
2226 | #else /* Non LFN configuration */\r | |
70702af1 L |
2227 | dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;\r |
2228 | if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */\r | |
53668523 | 2229 | #endif\r |
70702af1 L |
2230 | res = dir_next(dp, 0); /* Next entry */\r |
2231 | } while (res == FR_OK);\r | |
53668523 L |
2232 | \r |
2233 | return res;\r | |
2234 | }\r | |
53668523 L |
2235 | \r |
2236 | \r | |
2237 | \r | |
2238 | \r | |
70702af1 | 2239 | #if !_FS_READONLY\r |
53668523 L |
2240 | /*-----------------------------------------------------------------------*/\r |
2241 | /* Register an object to the directory */\r | |
2242 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 2243 | \r |
53668523 | 2244 | static\r |
70702af1 | 2245 | FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */\r |
53668523 L |
2246 | DIR* dp /* Target directory with object name to be created */\r |
2247 | )\r | |
2248 | {\r | |
2249 | FRESULT res;\r | |
70702af1 L |
2250 | FATFS *fs = dp->obj.fs;\r |
2251 | #if _USE_LFN != 0 /* LFN configuration */\r | |
2252 | UINT n, nlen, nent;\r | |
2253 | BYTE sn[12], sum;\r | |
2254 | \r | |
2255 | \r | |
2256 | if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */\r | |
2257 | for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */\r | |
2258 | \r | |
2259 | #if _FS_EXFAT\r | |
2260 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
2261 | DIR dj;\r | |
2262 | \r | |
2263 | nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */\r | |
2264 | res = dir_alloc(dp, nent); /* Allocate entries */\r | |
2265 | if (res != FR_OK) return res;\r | |
2266 | dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set block position */\r | |
2267 | \r | |
2268 | if (dp->obj.sclust != 0 && (dp->obj.stat & 4)) { /* Has the sub-directory been stretched? */\r | |
2269 | dp->obj.stat &= 3;\r | |
2270 | dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase object size by cluster size */\r | |
2271 | res = fill_fat_chain(&dp->obj); /* Complement FAT chain if needed */\r | |
2272 | if (res != FR_OK) return res;\r | |
2273 | res = load_obj_dir(&dj, &dp->obj);\r | |
2274 | if (res != FR_OK) return res; /* Load the object status */\r | |
2275 | st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize); /* Update the allocation status */\r | |
2276 | st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);\r | |
2277 | fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;\r | |
2278 | res = store_xdir(&dj); /* Store the object status */\r | |
2279 | if (res != FR_OK) return res;\r | |
2280 | }\r | |
53668523 | 2281 | \r |
70702af1 L |
2282 | create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */\r |
2283 | return FR_OK;\r | |
2284 | }\r | |
2285 | #endif\r | |
2286 | /* On the FAT12/16/32 volume */\r | |
2287 | mem_cpy(sn, dp->fn, 12);\r | |
7b78a5a2 | 2288 | if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */\r |
70702af1 | 2289 | dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */\r |
53668523 | 2290 | for (n = 1; n < 100; n++) {\r |
70702af1 | 2291 | gen_numname(dp->fn, sn, fs->lfnbuf, n); /* Generate a numbered name */\r |
53668523 L |
2292 | res = dir_find(dp); /* Check if the name collides with existing SFN */\r |
2293 | if (res != FR_OK) break;\r | |
2294 | }\r | |
2295 | if (n == 100) return FR_DENIED; /* Abort if too many collisions */\r | |
2296 | if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */\r | |
70702af1 | 2297 | dp->fn[NSFLAG] = sn[NSFLAG];\r |
53668523 L |
2298 | }\r |
2299 | \r | |
70702af1 L |
2300 | /* Create an SFN with/without LFNs. */\r |
2301 | nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */\r | |
53668523 | 2302 | res = dir_alloc(dp, nent); /* Allocate entries */\r |
53668523 | 2303 | if (res == FR_OK && --nent) { /* Set LFN entry if needed */\r |
70702af1 | 2304 | res = dir_sdi(dp, dp->dptr - nent * SZDIRE);\r |
53668523 | 2305 | if (res == FR_OK) {\r |
70702af1 | 2306 | sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */\r |
53668523 | 2307 | do { /* Store LFN entries in bottom first */\r |
70702af1 | 2308 | res = move_window(fs, dp->sect);\r |
53668523 | 2309 | if (res != FR_OK) break;\r |
70702af1 L |
2310 | put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum);\r |
2311 | fs->wflag = 1;\r | |
53668523 L |
2312 | res = dir_next(dp, 0); /* Next entry */\r |
2313 | } while (res == FR_OK && --nent);\r | |
2314 | }\r | |
2315 | }\r | |
70702af1 | 2316 | \r |
53668523 L |
2317 | #else /* Non LFN configuration */\r |
2318 | res = dir_alloc(dp, 1); /* Allocate an entry for SFN */\r | |
70702af1 | 2319 | \r |
53668523 L |
2320 | #endif\r |
2321 | \r | |
70702af1 L |
2322 | /* Set SFN entry */\r |
2323 | if (res == FR_OK) {\r | |
2324 | res = move_window(fs, dp->sect);\r | |
53668523 | 2325 | if (res == FR_OK) {\r |
70702af1 L |
2326 | mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */\r |
2327 | mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */\r | |
2328 | #if _USE_LFN != 0\r | |
7b78a5a2 | 2329 | dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */\r |
53668523 | 2330 | #endif\r |
70702af1 | 2331 | fs->wflag = 1;\r |
53668523 L |
2332 | }\r |
2333 | }\r | |
2334 | \r | |
2335 | return res;\r | |
2336 | }\r | |
53668523 | 2337 | \r |
70702af1 | 2338 | #endif /* !_FS_READONLY */\r |
53668523 L |
2339 | \r |
2340 | \r | |
2341 | \r | |
70702af1 | 2342 | #if !_FS_READONLY && _FS_MINIMIZE == 0\r |
53668523 L |
2343 | /*-----------------------------------------------------------------------*/\r |
2344 | /* Remove an object from the directory */\r | |
2345 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 2346 | \r |
53668523 | 2347 | static\r |
70702af1 | 2348 | FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */\r |
53668523 L |
2349 | DIR* dp /* Directory object pointing the entry to be removed */\r |
2350 | )\r | |
2351 | {\r | |
2352 | FRESULT res;\r | |
70702af1 L |
2353 | FATFS *fs = dp->obj.fs;\r |
2354 | #if _USE_LFN != 0 /* LFN configuration */\r | |
2355 | DWORD last = dp->dptr;\r | |
53668523 | 2356 | \r |
70702af1 | 2357 | res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */\r |
53668523 L |
2358 | if (res == FR_OK) {\r |
2359 | do {\r | |
70702af1 | 2360 | res = move_window(fs, dp->sect);\r |
53668523 | 2361 | if (res != FR_OK) break;\r |
70702af1 L |
2362 | /* Mark an entry 'deleted' */\r |
2363 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
2364 | dp->dir[XDIR_Type] &= 0x7F;\r | |
2365 | } else { /* On the FAT12/16/32 volume */\r | |
2366 | dp->dir[DIR_Name] = DDEM;\r | |
2367 | }\r | |
2368 | fs->wflag = 1;\r | |
2369 | if (dp->dptr >= last) break; /* If reached last entry then all entries of the object has been deleted. */\r | |
2370 | res = dir_next(dp, 0); /* Next entry */\r | |
53668523 L |
2371 | } while (res == FR_OK);\r |
2372 | if (res == FR_NO_FILE) res = FR_INT_ERR;\r | |
2373 | }\r | |
53668523 | 2374 | #else /* Non LFN configuration */\r |
70702af1 L |
2375 | \r |
2376 | res = move_window(fs, dp->sect);\r | |
53668523 | 2377 | if (res == FR_OK) {\r |
70702af1 L |
2378 | dp->dir[DIR_Name] = DDEM;\r |
2379 | fs->wflag = 1;\r | |
53668523 L |
2380 | }\r |
2381 | #endif\r | |
2382 | \r | |
2383 | return res;\r | |
2384 | }\r | |
53668523 | 2385 | \r |
70702af1 | 2386 | #endif /* !_FS_READONLY && _FS_MINIMIZE == 0 */\r |
53668523 L |
2387 | \r |
2388 | \r | |
2389 | \r | |
70702af1 | 2390 | #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2\r |
53668523 L |
2391 | /*-----------------------------------------------------------------------*/\r |
2392 | /* Get file information from directory entry */\r | |
2393 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 2394 | \r |
53668523 L |
2395 | static\r |
2396 | void get_fileinfo ( /* No return code */\r | |
2397 | DIR* dp, /* Pointer to the directory object */\r | |
2398 | FILINFO* fno /* Pointer to the file information to be filled */\r | |
2399 | )\r | |
2400 | {\r | |
70702af1 L |
2401 | UINT i, j;\r |
2402 | TCHAR c;\r | |
2403 | DWORD tm;\r | |
2404 | #if _USE_LFN != 0\r | |
2405 | WCHAR w, lfv;\r | |
2406 | FATFS *fs = dp->obj.fs;\r | |
2407 | #endif\r | |
53668523 L |
2408 | \r |
2409 | \r | |
70702af1 L |
2410 | fno->fname[0] = 0; /* Invaidate file info */\r |
2411 | if (!dp->sect) return; /* Exit if read pointer has reached end of directory */\r | |
53668523 | 2412 | \r |
70702af1 L |
2413 | #if _USE_LFN != 0 /* LFN configuration */\r |
2414 | #if _FS_EXFAT\r | |
2415 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
2416 | get_xdir_info(fs->dirbuf, fno);\r | |
2417 | return;\r | |
2418 | } else\r | |
53668523 | 2419 | #endif\r |
70702af1 L |
2420 | { /* On the FAT12/16/32 volume */\r |
2421 | if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */\r | |
2422 | i = j = 0;\r | |
2423 | while ((w = fs->lfnbuf[j++]) != 0) { /* Get an LFN character */\r | |
2424 | #if !_LFN_UNICODE\r | |
2425 | w = ff_convert(w, 0); /* Unicode -> OEM */\r | |
2426 | if (w == 0) { i = 0; break; } /* No LFN if it could not be converted */\r | |
2427 | if (_DF1S && w >= 0x100) { /* Put 1st byte if it is a DBC (always false at SBCS cfg) */\r | |
2428 | fno->fname[i++] = (char)(w >> 8);\r | |
2429 | }\r | |
53668523 | 2430 | #endif\r |
70702af1 L |
2431 | if (i >= _MAX_LFN) { i = 0; break; } /* No LFN if buffer overflow */\r |
2432 | fno->fname[i++] = (TCHAR)w;\r | |
2433 | }\r | |
2434 | fno->fname[i] = 0; /* Terminate the LFN */\r | |
53668523 | 2435 | }\r |
53668523 | 2436 | }\r |
53668523 | 2437 | \r |
70702af1 L |
2438 | i = j = 0;\r |
2439 | lfv = fno->fname[i]; /* LFN is exist if non-zero */\r | |
2440 | while (i < 11) { /* Copy name body and extension */\r | |
2441 | c = (TCHAR)dp->dir[i++];\r | |
2442 | if (c == ' ') continue; /* Skip padding spaces */\r | |
2443 | if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */\r | |
2444 | if (i == 9) { /* Insert a . if extension is exist */\r | |
2445 | if (!lfv) fno->fname[j] = '.';\r | |
2446 | fno->altname[j++] = '.';\r | |
2447 | }\r | |
2448 | #if _LFN_UNICODE\r | |
2449 | if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) {\r | |
2450 | c = c << 8 | dp->dir[i++];\r | |
2451 | }\r | |
2452 | c = ff_convert(c, 1); /* OEM -> Unicode */\r | |
2453 | if (!c) c = '?';\r | |
53668523 | 2454 | #endif\r |
70702af1 L |
2455 | fno->altname[j] = c;\r |
2456 | if (!lfv) {\r | |
2457 | if (IsUpper(c) && (dp->dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY))) {\r | |
2458 | c += 0x20; /* To lower */\r | |
53668523 | 2459 | }\r |
70702af1 | 2460 | fno->fname[j] = c;\r |
53668523 | 2461 | }\r |
70702af1 | 2462 | j++;\r |
53668523 | 2463 | }\r |
70702af1 L |
2464 | if (!lfv) {\r |
2465 | fno->fname[j] = 0;\r | |
2466 | if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */\r | |
2467 | }\r | |
2468 | fno->altname[j] = 0; /* Terminate the SFN */\r | |
2469 | \r | |
2470 | #else /* Non-LFN configuration */\r | |
2471 | i = j = 0;\r | |
2472 | while (i < 11) { /* Copy name body and extension */\r | |
2473 | c = (TCHAR)dp->dir[i++];\r | |
2474 | if (c == ' ') continue; /* Skip padding spaces */\r | |
2475 | if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */\r | |
2476 | if (i == 9) fno->fname[j++] = '.'; /* Insert a . if extension is exist */\r | |
2477 | fno->fname[j++] = c;\r | |
2478 | }\r | |
2479 | fno->fname[j] = 0;\r | |
53668523 | 2480 | #endif\r |
70702af1 L |
2481 | \r |
2482 | fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */\r | |
2483 | fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */\r | |
2484 | tm = ld_dword(dp->dir + DIR_ModTime); /* Timestamp */\r | |
2485 | fno->ftime = (WORD)tm; fno->fdate = (WORD)(tm >> 16);\r | |
53668523 | 2486 | }\r |
53668523 | 2487 | \r |
70702af1 | 2488 | #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */\r |
53668523 L |
2489 | \r |
2490 | \r | |
2491 | \r | |
70702af1 | 2492 | #if _USE_FIND && _FS_MINIMIZE <= 1\r |
53668523 | 2493 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 2494 | /* Pattern matching */\r |
53668523 L |
2495 | /*-----------------------------------------------------------------------*/\r |
2496 | \r | |
2497 | static\r | |
70702af1 L |
2498 | WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */\r |
2499 | const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */\r | |
2500 | )\r | |
2501 | {\r | |
2502 | #if !_LFN_UNICODE\r | |
2503 | WCHAR chr;\r | |
2504 | \r | |
2505 | chr = (BYTE)*(*ptr)++; /* Get a byte */\r | |
2506 | if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */\r | |
2507 | #ifdef _EXCVT\r | |
2508 | if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */\r | |
2509 | #else\r | |
2510 | if (IsDBCS1(chr) && IsDBCS2(**ptr)) { /* Get DBC 2nd byte if needed */\r | |
2511 | chr = chr << 8 | (BYTE)*(*ptr)++;\r | |
2512 | }\r | |
2513 | #endif\r | |
2514 | return chr;\r | |
2515 | #else\r | |
2516 | return ff_wtoupper(*(*ptr)++); /* Get a word and to upper */\r | |
2517 | #endif\r | |
2518 | }\r | |
2519 | \r | |
2520 | \r | |
2521 | static\r | |
2522 | int pattern_matching ( /* 0:not matched, 1:matched */\r | |
2523 | const TCHAR* pat, /* Matching pattern */\r | |
2524 | const TCHAR* nam, /* String to be tested */\r | |
2525 | int skip, /* Number of pre-skip chars (number of ?s) */\r | |
2526 | int inf /* Infinite search (* specified) */\r | |
2527 | )\r | |
2528 | {\r | |
2529 | const TCHAR *pp, *np;\r | |
2530 | WCHAR pc, nc;\r | |
2531 | int nm, nx;\r | |
2532 | \r | |
2533 | \r | |
2534 | while (skip--) { /* Pre-skip name chars */\r | |
2535 | if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */\r | |
2536 | }\r | |
2537 | if (!*pat && inf) return 1; /* (short circuit) */\r | |
2538 | \r | |
2539 | do {\r | |
2540 | pp = pat; np = nam; /* Top of pattern and name to match */\r | |
2541 | for (;;) {\r | |
2542 | if (*pp == '?' || *pp == '*') { /* Wildcard? */\r | |
2543 | nm = nx = 0;\r | |
2544 | do { /* Analyze the wildcard chars */\r | |
2545 | if (*pp++ == '?') nm++; else nx = 1;\r | |
2546 | } while (*pp == '?' || *pp == '*');\r | |
2547 | if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */\r | |
2548 | nc = *np; break; /* Branch mismatched */\r | |
2549 | }\r | |
2550 | pc = get_achar(&pp); /* Get a pattern char */\r | |
2551 | nc = get_achar(&np); /* Get a name char */\r | |
2552 | if (pc != nc) break; /* Branch mismatched? */\r | |
2553 | if (pc == 0) return 1; /* Branch matched? (matched at end of both strings) */\r | |
2554 | }\r | |
2555 | get_achar(&nam); /* nam++ */\r | |
2556 | } while (inf && nc); /* Retry until end of name if infinite search is specified */\r | |
2557 | \r | |
2558 | return 0;\r | |
2559 | }\r | |
2560 | \r | |
2561 | #endif /* _USE_FIND && _FS_MINIMIZE <= 1 */\r | |
2562 | \r | |
2563 | \r | |
2564 | \r | |
2565 | /*-----------------------------------------------------------------------*/\r | |
2566 | /* Pick a top segment and create the object name in directory form */\r | |
2567 | /*-----------------------------------------------------------------------*/\r | |
2568 | \r | |
2569 | static\r | |
2570 | FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */\r | |
53668523 L |
2571 | DIR* dp, /* Pointer to the directory object */\r |
2572 | const TCHAR** path /* Pointer to pointer to the segment in the path string */\r | |
2573 | )\r | |
2574 | {\r | |
70702af1 | 2575 | #if _USE_LFN != 0 /* LFN configuration */\r |
53668523 L |
2576 | BYTE b, cf;\r |
2577 | WCHAR w, *lfn;\r | |
2578 | UINT i, ni, si, di;\r | |
2579 | const TCHAR *p;\r | |
2580 | \r | |
2581 | /* Create LFN in Unicode */\r | |
70702af1 | 2582 | p = *path; lfn = dp->obj.fs->lfnbuf; si = di = 0;\r |
53668523 L |
2583 | for (;;) {\r |
2584 | w = p[si++]; /* Get a character */\r | |
70702af1 L |
2585 | if (w < ' ') break; /* Break if end of the path name */\r |
2586 | if (w == '/' || w == '\\') { /* Break if a separator is found */\r | |
2587 | while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */\r | |
2588 | break;\r | |
2589 | }\r | |
2590 | if (di >= _MAX_LFN) return FR_INVALID_NAME; /* Reject too long name */\r | |
53668523 L |
2591 | #if !_LFN_UNICODE\r |
2592 | w &= 0xFF;\r | |
2593 | if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */\r | |
2594 | b = (BYTE)p[si++]; /* Get 2nd byte */\r | |
53668523 | 2595 | w = (w << 8) + b; /* Create a DBC */\r |
70702af1 | 2596 | if (!IsDBCS2(b)) return FR_INVALID_NAME; /* Reject invalid sequence */\r |
53668523 L |
2597 | }\r |
2598 | w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */\r | |
2599 | if (!w) return FR_INVALID_NAME; /* Reject invalid code */\r | |
2600 | #endif\r | |
70702af1 | 2601 | if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */\r |
53668523 L |
2602 | lfn[di++] = w; /* Store the Unicode character */\r |
2603 | }\r | |
2604 | *path = &p[si]; /* Return pointer to the next segment */\r | |
70702af1 L |
2605 | cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */\r |
2606 | #if _FS_RPATH != 0\r | |
2607 | if ((di == 1 && lfn[di - 1] == '.') ||\r | |
2608 | (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */\r | |
53668523 | 2609 | lfn[di] = 0;\r |
70702af1 | 2610 | for (i = 0; i < 11; i++) /* Create dot name for SFN entry */\r |
53668523 L |
2611 | dp->fn[i] = (i < di) ? '.' : ' ';\r |
2612 | dp->fn[i] = cf | NS_DOT; /* This is a dot entry */\r | |
2613 | return FR_OK;\r | |
2614 | }\r | |
2615 | #endif\r | |
70702af1 L |
2616 | while (di) { /* Snip off trailing spaces and dots if exist */\r |
2617 | w = lfn[di - 1];\r | |
53668523 L |
2618 | if (w != ' ' && w != '.') break;\r |
2619 | di--;\r | |
2620 | }\r | |
53668523 | 2621 | lfn[di] = 0; /* LFN is created */\r |
70702af1 | 2622 | if (di == 0) return FR_INVALID_NAME; /* Reject nul name */\r |
53668523 L |
2623 | \r |
2624 | /* Create SFN in directory form */\r | |
2625 | mem_set(dp->fn, ' ', 11);\r | |
2626 | for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */\r | |
2627 | if (si) cf |= NS_LOSS | NS_LFN;\r | |
2628 | while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */\r | |
2629 | \r | |
70702af1 | 2630 | i = b = 0; ni = 8;\r |
53668523 L |
2631 | for (;;) {\r |
2632 | w = lfn[si++]; /* Get an LFN character */\r | |
2633 | if (!w) break; /* Break on end of the LFN */\r | |
2634 | if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */\r | |
2635 | cf |= NS_LOSS | NS_LFN; continue;\r | |
2636 | }\r | |
2637 | \r | |
2638 | if (i >= ni || si == di) { /* Extension or end of SFN */\r | |
2639 | if (ni == 11) { /* Long extension */\r | |
2640 | cf |= NS_LOSS | NS_LFN; break;\r | |
2641 | }\r | |
2642 | if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */\r | |
2643 | if (si > di) break; /* No extension */\r | |
2644 | si = di; i = 8; ni = 11; /* Enter extension section */\r | |
2645 | b <<= 2; continue;\r | |
2646 | }\r | |
2647 | \r | |
2648 | if (w >= 0x80) { /* Non ASCII character */\r | |
2649 | #ifdef _EXCVT\r | |
2650 | w = ff_convert(w, 0); /* Unicode -> OEM code */\r | |
2651 | if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */\r | |
2652 | #else\r | |
2653 | w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */\r | |
2654 | #endif\r | |
2655 | cf |= NS_LFN; /* Force create LFN entry */\r | |
2656 | }\r | |
2657 | \r | |
70702af1 | 2658 | if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */\r |
53668523 L |
2659 | if (i >= ni - 1) {\r |
2660 | cf |= NS_LOSS | NS_LFN; i = ni; continue;\r | |
2661 | }\r | |
2662 | dp->fn[i++] = (BYTE)(w >> 8);\r | |
70702af1 | 2663 | } else { /* SBC */\r |
53668523 L |
2664 | if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */\r |
2665 | w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */\r | |
2666 | } else {\r | |
2667 | if (IsUpper(w)) { /* ASCII large capital */\r | |
2668 | b |= 2;\r | |
2669 | } else {\r | |
2670 | if (IsLower(w)) { /* ASCII small capital */\r | |
2671 | b |= 1; w -= 0x20;\r | |
2672 | }\r | |
2673 | }\r | |
2674 | }\r | |
2675 | }\r | |
2676 | dp->fn[i++] = (BYTE)w;\r | |
2677 | }\r | |
2678 | \r | |
70702af1 | 2679 | if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */\r |
53668523 L |
2680 | \r |
2681 | if (ni == 8) b <<= 2;\r | |
70702af1 | 2682 | if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* Create LFN entry when there are composite capitals */\r |
53668523 L |
2683 | if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */\r |
2684 | if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */\r | |
2685 | if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */\r | |
2686 | }\r | |
2687 | \r | |
7b78a5a2 | 2688 | dp->fn[NSFLAG] = cf; /* SFN is created */\r |
53668523 L |
2689 | \r |
2690 | return FR_OK;\r | |
2691 | \r | |
2692 | \r | |
70702af1 L |
2693 | #else /* _USE_LFN != 0 : Non-LFN configuration */\r |
2694 | BYTE c, d, *sfn;\r | |
53668523 L |
2695 | UINT ni, si, i;\r |
2696 | const char *p;\r | |
2697 | \r | |
2698 | /* Create file name in directory form */\r | |
70702af1 | 2699 | p = *path; sfn = dp->fn;\r |
53668523 | 2700 | mem_set(sfn, ' ', 11);\r |
70702af1 L |
2701 | si = i = 0; ni = 8;\r |
2702 | #if _FS_RPATH != 0\r | |
53668523 L |
2703 | if (p[si] == '.') { /* Is this a dot entry? */\r |
2704 | for (;;) {\r | |
2705 | c = (BYTE)p[si++];\r | |
2706 | if (c != '.' || si >= 3) break;\r | |
2707 | sfn[i++] = c;\r | |
2708 | }\r | |
2709 | if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;\r | |
70702af1 L |
2710 | *path = p + si; /* Return pointer to the next segment */\r |
2711 | sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */\r | |
53668523 L |
2712 | return FR_OK;\r |
2713 | }\r | |
2714 | #endif\r | |
2715 | for (;;) {\r | |
2716 | c = (BYTE)p[si++];\r | |
70702af1 L |
2717 | if (c <= ' ') break; /* Break if end of the path name */\r |
2718 | if (c == '/' || c == '\\') { /* Break if a separator is found */\r | |
2719 | while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */\r | |
2720 | break;\r | |
2721 | }\r | |
2722 | if (c == '.' || i >= ni) { /* End of body or over size? */\r | |
2723 | if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Over size or invalid dot */\r | |
2724 | i = 8; ni = 11; /* Goto extension */\r | |
2725 | continue;\r | |
53668523 L |
2726 | }\r |
2727 | if (c >= 0x80) { /* Extended character? */\r | |
53668523 L |
2728 | #ifdef _EXCVT\r |
2729 | c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */\r | |
2730 | #else\r | |
2731 | #if !_DF1S\r | |
70702af1 | 2732 | return FR_INVALID_NAME; /* Reject extended characters (ASCII only cfg) */\r |
53668523 L |
2733 | #endif\r |
2734 | #endif\r | |
2735 | }\r | |
70702af1 | 2736 | if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */\r |
53668523 | 2737 | d = (BYTE)p[si++]; /* Get 2nd byte */\r |
70702af1 | 2738 | if (!IsDBCS2(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */\r |
53668523 L |
2739 | sfn[i++] = c;\r |
2740 | sfn[i++] = d;\r | |
70702af1 L |
2741 | } else { /* SBC */\r |
2742 | if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */\r | |
2743 | if (IsLower(c)) c -= 0x20; /* To upper */\r | |
53668523 L |
2744 | sfn[i++] = c;\r |
2745 | }\r | |
2746 | }\r | |
70702af1 L |
2747 | *path = p + si; /* Return pointer to the next segment */\r |
2748 | if (i == 0) return FR_INVALID_NAME; /* Reject nul string */\r | |
53668523 | 2749 | \r |
70702af1 L |
2750 | if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */\r |
2751 | sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */\r | |
53668523 L |
2752 | \r |
2753 | return FR_OK;\r | |
70702af1 | 2754 | #endif /* _USE_LFN != 0 */\r |
53668523 L |
2755 | }\r |
2756 | \r | |
2757 | \r | |
2758 | \r | |
2759 | \r | |
2760 | /*-----------------------------------------------------------------------*/\r | |
2761 | /* Follow a file path */\r | |
2762 | /*-----------------------------------------------------------------------*/\r | |
2763 | \r | |
2764 | static\r | |
2765 | FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */\r | |
2766 | DIR* dp, /* Directory object to return last directory and found object */\r | |
2767 | const TCHAR* path /* Full-path string to find a file or directory */\r | |
2768 | )\r | |
2769 | {\r | |
2770 | FRESULT res;\r | |
70702af1 L |
2771 | BYTE ns;\r |
2772 | _FDID *obj = &dp->obj;\r | |
2773 | FATFS *fs = obj->fs;\r | |
53668523 L |
2774 | \r |
2775 | \r | |
70702af1 L |
2776 | #if _FS_RPATH != 0\r |
2777 | if (*path != '/' && *path != '\\') { /* Without heading separator */\r | |
2778 | obj->sclust = fs->cdir; /* Start from the current directory */\r | |
2779 | } else\r | |
2780 | #endif\r | |
2781 | { /* With heading separator */\r | |
2782 | while (*path == '/' || *path == '\\') path++; /* Strip heading separator */\r | |
2783 | obj->sclust = 0; /* Start from the root directory */\r | |
2784 | }\r | |
2785 | #if _FS_EXFAT && _FS_RPATH != 0\r | |
2786 | if (fs->fs_type == FS_EXFAT && obj->sclust) { /* Retrieve the sub-directory status if needed */\r | |
2787 | DIR dj;\r | |
2788 | \r | |
2789 | obj->c_scl = fs->cdc_scl;\r | |
2790 | obj->c_size = fs->cdc_size;\r | |
2791 | obj->c_ofs = fs->cdc_ofs;\r | |
2792 | res = load_obj_dir(&dj, obj);\r | |
2793 | if (res != FR_OK) return res;\r | |
2794 | obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize);\r | |
2795 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
53668523 | 2796 | }\r |
53668523 L |
2797 | #endif\r |
2798 | \r | |
2799 | if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */\r | |
70702af1 | 2800 | dp->fn[NSFLAG] = NS_NONAME;\r |
53668523 | 2801 | res = dir_sdi(dp, 0);\r |
70702af1 | 2802 | \r |
53668523 L |
2803 | } else { /* Follow path */\r |
2804 | for (;;) {\r | |
2805 | res = create_name(dp, &path); /* Get a segment name of the path */\r | |
2806 | if (res != FR_OK) break;\r | |
70702af1 | 2807 | res = dir_find(dp); /* Find an object with the segment name */\r |
7b78a5a2 | 2808 | ns = dp->fn[NSFLAG];\r |
53668523 L |
2809 | if (res != FR_OK) { /* Failed to find the object */\r |
2810 | if (res == FR_NO_FILE) { /* Object is not found */\r | |
70702af1 | 2811 | if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, stay there */\r |
53668523 | 2812 | if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */\r |
70702af1 L |
2813 | dp->fn[NSFLAG] = NS_NONAME;\r |
2814 | res = FR_OK;\r | |
53668523 L |
2815 | } else { /* Could not find the object */\r |
2816 | if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */\r | |
2817 | }\r | |
2818 | }\r | |
2819 | break;\r | |
2820 | }\r | |
2821 | if (ns & NS_LAST) break; /* Last segment matched. Function completed. */\r | |
70702af1 L |
2822 | /* Get into the sub-directory */\r |
2823 | if (!(obj->attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */\r | |
53668523 L |
2824 | res = FR_NO_PATH; break;\r |
2825 | }\r | |
70702af1 L |
2826 | #if _FS_EXFAT\r |
2827 | if (fs->fs_type == FS_EXFAT) {\r | |
2828 | obj->c_scl = obj->sclust; /* Save containing directory information for next dir */\r | |
2829 | obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;\r | |
2830 | obj->c_ofs = dp->blk_ofs;\r | |
2831 | obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Open next directory */\r | |
2832 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
2833 | obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r | |
2834 | } else\r | |
2835 | #endif\r | |
2836 | {\r | |
2837 | obj->sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */\r | |
2838 | }\r | |
53668523 L |
2839 | }\r |
2840 | }\r | |
2841 | \r | |
2842 | return res;\r | |
2843 | }\r | |
2844 | \r | |
2845 | \r | |
2846 | \r | |
2847 | \r | |
2848 | /*-----------------------------------------------------------------------*/\r | |
2849 | /* Get logical drive number from path name */\r | |
2850 | /*-----------------------------------------------------------------------*/\r | |
2851 | \r | |
2852 | static\r | |
2853 | int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */\r | |
2854 | const TCHAR** path /* Pointer to pointer to the path name */\r | |
2855 | )\r | |
2856 | {\r | |
2857 | const TCHAR *tp, *tt;\r | |
2858 | UINT i;\r | |
2859 | int vol = -1;\r | |
70702af1 L |
2860 | #if _STR_VOLUME_ID /* Find string drive id */\r |
2861 | static const char* const str[] = {_VOLUME_STRS};\r | |
2862 | const char *sp;\r | |
2863 | char c;\r | |
2864 | TCHAR tc;\r | |
2865 | #endif\r | |
53668523 L |
2866 | \r |
2867 | \r | |
2868 | if (*path) { /* If the pointer is not a null */\r | |
2869 | for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */\r | |
2870 | if (*tt == ':') { /* If a ':' is exist in the path name */\r | |
2871 | tp = *path;\r | |
2872 | i = *tp++ - '0'; \r | |
2873 | if (i < 10 && tp == tt) { /* Is there a numeric drive id? */\r | |
2874 | if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */\r | |
2875 | vol = (int)i;\r | |
2876 | *path = ++tt;\r | |
2877 | }\r | |
70702af1 L |
2878 | }\r |
2879 | #if _STR_VOLUME_ID\r | |
2880 | else { /* No numeric drive number, find string drive id */\r | |
53668523 L |
2881 | i = 0; tt++;\r |
2882 | do {\r | |
2883 | sp = str[i]; tp = *path;\r | |
2884 | do { /* Compare a string drive id with path name */\r | |
2885 | c = *sp++; tc = *tp++;\r | |
2886 | if (IsLower(tc)) tc -= 0x20;\r | |
2887 | } while (c && (TCHAR)c == tc);\r | |
2888 | } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */\r | |
2889 | if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */\r | |
2890 | vol = (int)i;\r | |
2891 | *path = tt;\r | |
2892 | }\r | |
53668523 | 2893 | }\r |
70702af1 | 2894 | #endif\r |
53668523 L |
2895 | return vol;\r |
2896 | }\r | |
70702af1 | 2897 | #if _FS_RPATH != 0 && _VOLUMES >= 2\r |
53668523 L |
2898 | vol = CurrVol; /* Current drive */\r |
2899 | #else\r | |
2900 | vol = 0; /* Drive 0 */\r | |
2901 | #endif\r | |
2902 | }\r | |
2903 | return vol;\r | |
2904 | }\r | |
2905 | \r | |
2906 | \r | |
2907 | \r | |
2908 | \r | |
2909 | /*-----------------------------------------------------------------------*/\r | |
2910 | /* Load a sector and check if it is an FAT boot sector */\r | |
2911 | /*-----------------------------------------------------------------------*/\r | |
2912 | \r | |
2913 | static\r | |
70702af1 | 2914 | BYTE check_fs ( /* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */\r |
53668523 | 2915 | FATFS* fs, /* File system object */\r |
70702af1 | 2916 | DWORD sect /* Sector# (lba) to check if it is an FAT-VBR or not */\r |
53668523 L |
2917 | )\r |
2918 | {\r | |
70702af1 L |
2919 | fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */\r |
2920 | if (move_window(fs, sect) != FR_OK) return 4; /* Load boot record */\r | |
53668523 | 2921 | \r |
70702af1 | 2922 | if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */\r |
53668523 | 2923 | \r |
70702af1 L |
2924 | if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) {\r |
2925 | if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0; /* Check "FAT" string */\r | |
2926 | if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0; /* Check "FAT3" string */\r | |
2927 | }\r | |
2928 | #if _FS_EXFAT\r | |
2929 | if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1;\r | |
2930 | #endif\r | |
2931 | return 2;\r | |
53668523 L |
2932 | }\r |
2933 | \r | |
2934 | \r | |
2935 | \r | |
2936 | \r | |
2937 | /*-----------------------------------------------------------------------*/\r | |
2938 | /* Find logical drive and check if the volume is mounted */\r | |
2939 | /*-----------------------------------------------------------------------*/\r | |
2940 | \r | |
2941 | static\r | |
2942 | FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */\r | |
53668523 | 2943 | const TCHAR** path, /* Pointer to pointer to the path name (drive number) */\r |
70702af1 L |
2944 | FATFS** rfs, /* Pointer to pointer to the found file system object */\r |
2945 | BYTE mode /* !=0: Check write protection for write access */\r | |
53668523 L |
2946 | )\r |
2947 | {\r | |
70702af1 | 2948 | BYTE fmt, *pt;\r |
53668523 L |
2949 | int vol;\r |
2950 | DSTATUS stat;\r | |
70702af1 | 2951 | DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];\r |
53668523 L |
2952 | WORD nrsv;\r |
2953 | FATFS *fs;\r | |
70702af1 | 2954 | UINT i;\r |
53668523 L |
2955 | \r |
2956 | \r | |
70702af1 | 2957 | /* Get logical drive number */\r |
53668523 L |
2958 | *rfs = 0;\r |
2959 | vol = get_ldnumber(path);\r | |
2960 | if (vol < 0) return FR_INVALID_DRIVE;\r | |
2961 | \r | |
2962 | /* Check if the file system object is valid or not */\r | |
2963 | fs = FatFs[vol]; /* Get pointer to the file system object */\r | |
2964 | if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */\r | |
2965 | \r | |
2966 | ENTER_FF(fs); /* Lock the volume */\r | |
2967 | *rfs = fs; /* Return pointer to the file system object */\r | |
2968 | \r | |
70702af1 | 2969 | mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */\r |
53668523 L |
2970 | if (fs->fs_type) { /* If the volume has been mounted */\r |
2971 | stat = disk_status(fs->drv);\r | |
2972 | if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */\r | |
70702af1 | 2973 | if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check write protection if needed */\r |
53668523 | 2974 | return FR_WRITE_PROTECTED;\r |
70702af1 | 2975 | }\r |
53668523 L |
2976 | return FR_OK; /* The file system object is valid */\r |
2977 | }\r | |
2978 | }\r | |
2979 | \r | |
2980 | /* The file system object is not valid. */\r | |
2981 | /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */\r | |
2982 | \r | |
2983 | fs->fs_type = 0; /* Clear the file system object */\r | |
2984 | fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */\r | |
2985 | stat = disk_initialize(fs->drv); /* Initialize the physical drive */\r | |
70702af1 | 2986 | if (stat & STA_NOINIT) { /* Check if the initialization succeeded */\r |
53668523 | 2987 | return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */\r |
70702af1 L |
2988 | }\r |
2989 | if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */\r | |
53668523 | 2990 | return FR_WRITE_PROTECTED;\r |
70702af1 | 2991 | }\r |
53668523 | 2992 | #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */\r |
70702af1 L |
2993 | if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR;\r |
2994 | if (SS(fs) > _MAX_SS || SS(fs) < _MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR;\r | |
53668523 L |
2995 | #endif\r |
2996 | /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */\r | |
2997 | bsect = 0;\r | |
70702af1 L |
2998 | fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT-VBR as SFD */\r |
2999 | if (fmt == 2 || (fmt < 2 && LD2PT(vol) != 0)) { /* Not an FAT-VBR or forced partition number */\r | |
53668523 | 3000 | for (i = 0; i < 4; i++) { /* Get partition offset */\r |
70702af1 L |
3001 | pt = fs->win + (MBR_Table + i * SZ_PTE);\r |
3002 | br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 0;\r | |
53668523 L |
3003 | }\r |
3004 | i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */\r | |
3005 | if (i) i--;\r | |
3006 | do { /* Find an FAT volume */\r | |
3007 | bsect = br[i];\r | |
70702af1 L |
3008 | fmt = bsect ? check_fs(fs, bsect) : 3; /* Check the partition */\r |
3009 | } while (!LD2PT(vol) && fmt >= 2 && ++i < 4);\r | |
53668523 | 3010 | }\r |
70702af1 L |
3011 | if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */\r |
3012 | if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */\r | |
53668523 L |
3013 | \r |
3014 | /* An FAT volume is found. Following code initializes the file system object */\r | |
3015 | \r | |
70702af1 L |
3016 | #if _FS_EXFAT\r |
3017 | if (fmt == 1) {\r | |
3018 | QWORD maxlba;\r | |
3019 | \r | |
3020 | for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */\r | |
3021 | if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;\r | |
3022 | \r | |
3023 | if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT revision (Must be 1.0) */\r | |
3024 | \r | |
3025 | if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) /* (BPB_BytsPerSecEx must be equal to the physical sector size) */\r | |
3026 | return FR_NO_FILESYSTEM;\r | |
3027 | \r | |
3028 | maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */\r | |
3029 | if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */\r | |
3030 | \r | |
3031 | fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */\r | |
3032 | \r | |
3033 | fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */\r | |
3034 | if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */\r | |
3035 | \r | |
3036 | fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */\r | |
3037 | if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */\r | |
3038 | \r | |
3039 | nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */\r | |
3040 | if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */\r | |
3041 | fs->n_fatent = nclst + 2;\r | |
53668523 | 3042 | \r |
70702af1 L |
3043 | /* Boundaries and Limits */\r |
3044 | fs->volbase = bsect;\r | |
3045 | fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);\r | |
3046 | fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);\r | |
3047 | if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */\r | |
3048 | fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);\r | |
3049 | \r | |
3050 | /* Check if bitmap location is in assumption (at the first cluster) */\r | |
3051 | if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR;\r | |
3052 | for (i = 0; i < SS(fs); i += SZDIRE) {\r | |
3053 | if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break; /* 81 entry with cluster #2? */\r | |
3054 | }\r | |
3055 | if (i == SS(fs)) return FR_NO_FILESYSTEM;\r | |
53668523 | 3056 | #if !_FS_READONLY\r |
70702af1 L |
3057 | fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */\r |
3058 | #endif\r | |
3059 | fmt = FS_EXFAT; /* FAT sub-type */\r | |
3060 | } else\r | |
3061 | #endif /* _FS_EXFAT */\r | |
3062 | {\r | |
3063 | if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */\r | |
3064 | \r | |
3065 | fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */\r | |
3066 | if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);\r | |
3067 | fs->fsize = fasize;\r | |
3068 | \r | |
3069 | fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */\r | |
3070 | if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */\r | |
3071 | fasize *= fs->n_fats; /* Number of sectors for FAT area */\r | |
3072 | \r | |
3073 | fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */\r | |
3074 | if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */\r | |
3075 | \r | |
3076 | fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */\r | |
3077 | if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */\r | |
3078 | \r | |
3079 | tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */\r | |
3080 | if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);\r | |
3081 | \r | |
3082 | nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */\r | |
3083 | if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */\r | |
3084 | \r | |
3085 | /* Determine the FAT sub type */\r | |
3086 | sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */\r | |
3087 | if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */\r | |
3088 | nclst = (tsect - sysect) / fs->csize; /* Number of clusters */\r | |
3089 | if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */\r | |
3090 | fmt = FS_FAT32;\r | |
3091 | if (nclst <= MAX_FAT16) fmt = FS_FAT16;\r | |
3092 | if (nclst <= MAX_FAT12) fmt = FS_FAT12;\r | |
3093 | \r | |
3094 | /* Boundaries and Limits */\r | |
3095 | fs->n_fatent = nclst + 2; /* Number of FAT entries */\r | |
3096 | fs->volbase = bsect; /* Volume start sector */\r | |
3097 | fs->fatbase = bsect + nrsv; /* FAT start sector */\r | |
3098 | fs->database = bsect + sysect; /* Data start sector */\r | |
3099 | if (fmt == FS_FAT32) {\r | |
3100 | if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */\r | |
3101 | if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */\r | |
3102 | fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */\r | |
3103 | szbfat = fs->n_fatent * 4; /* (Needed FAT size) */\r | |
3104 | } else {\r | |
3105 | if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM;/* (BPB_RootEntCnt must not be 0) */\r | |
3106 | fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */\r | |
3107 | szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */\r | |
3108 | fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);\r | |
3109 | }\r | |
3110 | if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */\r | |
53668523 | 3111 | \r |
70702af1 L |
3112 | #if !_FS_READONLY\r |
3113 | /* Get FSINFO if available */\r | |
3114 | fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */\r | |
3115 | fs->fsi_flag = 0x80;\r | |
53668523 | 3116 | #if (_FS_NOFSINFO & 3) != 3\r |
70702af1 L |
3117 | if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */\r |
3118 | && ld_word(fs->win + BPB_FSInfo32) == 1\r | |
3119 | && move_window(fs, bsect + 1) == FR_OK)\r | |
53668523 | 3120 | {\r |
70702af1 L |
3121 | fs->fsi_flag = 0;\r |
3122 | if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */\r | |
3123 | && ld_dword(fs->win + FSI_LeadSig) == 0x41615252\r | |
3124 | && ld_dword(fs->win + FSI_StrucSig) == 0x61417272)\r | |
3125 | {\r | |
53668523 | 3126 | #if (_FS_NOFSINFO & 1) == 0\r |
70702af1 | 3127 | fs->free_clst = ld_dword(fs->win + FSI_Free_Count);\r |
53668523 L |
3128 | #endif\r |
3129 | #if (_FS_NOFSINFO & 2) == 0\r | |
70702af1 | 3130 | fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);\r |
53668523 | 3131 | #endif\r |
70702af1 | 3132 | }\r |
53668523 | 3133 | }\r |
70702af1 L |
3134 | #endif /* (_FS_NOFSINFO & 3) != 3 */\r |
3135 | #endif /* !_FS_READONLY */\r | |
53668523 | 3136 | }\r |
70702af1 | 3137 | \r |
53668523 L |
3138 | fs->fs_type = fmt; /* FAT sub-type */\r |
3139 | fs->id = ++Fsid; /* File system mount ID */\r | |
70702af1 L |
3140 | #if _USE_LFN == 1\r |
3141 | fs->lfnbuf = LfnBuf; /* Static LFN working buffer */\r | |
3142 | #if _FS_EXFAT\r | |
3143 | fs->dirbuf = DirBuf; /* Static directory block working buuffer */\r | |
3144 | #endif\r | |
53668523 | 3145 | #endif\r |
70702af1 L |
3146 | #if _FS_RPATH != 0\r |
3147 | fs->cdir = 0; /* Initialize current directory */\r | |
3148 | #endif\r | |
3149 | #if _FS_LOCK != 0 /* Clear file lock semaphores */\r | |
53668523 L |
3150 | clear_lock(fs);\r |
3151 | #endif\r | |
53668523 L |
3152 | return FR_OK;\r |
3153 | }\r | |
3154 | \r | |
3155 | \r | |
3156 | \r | |
3157 | \r | |
3158 | /*-----------------------------------------------------------------------*/\r | |
3159 | /* Check if the file/directory object is valid or not */\r | |
3160 | /*-----------------------------------------------------------------------*/\r | |
3161 | \r | |
3162 | static\r | |
70702af1 L |
3163 | FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */\r |
3164 | _FDID* obj, /* Pointer to the _OBJ, the 1st member in the FIL/DIR object, to check validity */\r | |
3165 | FATFS** fs /* Pointer to pointer to the owner file system object to return */\r | |
53668523 L |
3166 | )\r |
3167 | {\r | |
70702af1 | 3168 | FRESULT res;\r |
53668523 | 3169 | \r |
53668523 | 3170 | \r |
70702af1 L |
3171 | if (!obj || !obj->fs || !obj->fs->fs_type || obj->fs->id != obj->id || (disk_status(obj->fs->drv) & STA_NOINIT)) {\r |
3172 | *fs = 0; /* The object is invalid */\r | |
3173 | res = FR_INVALID_OBJECT;\r | |
3174 | } else {\r | |
3175 | *fs = obj->fs; /* Owner file sytem object */\r | |
3176 | ENTER_FF(obj->fs); /* Lock file system */\r | |
3177 | res = FR_OK;\r | |
3178 | }\r | |
3179 | return res;\r | |
53668523 L |
3180 | }\r |
3181 | \r | |
3182 | \r | |
3183 | \r | |
3184 | \r | |
70702af1 | 3185 | /*---------------------------------------------------------------------------\r |
53668523 | 3186 | \r |
70702af1 | 3187 | Public Functions (FatFs API)\r |
53668523 | 3188 | \r |
70702af1 | 3189 | ----------------------------------------------------------------------------*/\r |
53668523 L |
3190 | \r |
3191 | \r | |
3192 | \r | |
3193 | /*-----------------------------------------------------------------------*/\r | |
3194 | /* Mount/Unmount a Logical Drive */\r | |
3195 | /*-----------------------------------------------------------------------*/\r | |
3196 | \r | |
3197 | FRESULT f_mount (\r | |
3198 | FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/\r | |
3199 | const TCHAR* path, /* Logical drive number to be mounted/unmounted */\r | |
70702af1 | 3200 | BYTE opt /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */\r |
53668523 L |
3201 | )\r |
3202 | {\r | |
3203 | FATFS *cfs;\r | |
3204 | int vol;\r | |
3205 | FRESULT res;\r | |
3206 | const TCHAR *rp = path;\r | |
3207 | \r | |
3208 | \r | |
70702af1 | 3209 | /* Get logical drive number */\r |
53668523 L |
3210 | vol = get_ldnumber(&rp);\r |
3211 | if (vol < 0) return FR_INVALID_DRIVE;\r | |
3212 | cfs = FatFs[vol]; /* Pointer to fs object */\r | |
3213 | \r | |
3214 | if (cfs) {\r | |
70702af1 | 3215 | #if _FS_LOCK != 0\r |
53668523 L |
3216 | clear_lock(cfs);\r |
3217 | #endif\r | |
3218 | #if _FS_REENTRANT /* Discard sync object of the current volume */\r | |
3219 | if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;\r | |
3220 | #endif\r | |
3221 | cfs->fs_type = 0; /* Clear old fs object */\r | |
3222 | }\r | |
3223 | \r | |
3224 | if (fs) {\r | |
3225 | fs->fs_type = 0; /* Clear new fs object */\r | |
3226 | #if _FS_REENTRANT /* Create sync object for the new volume */\r | |
3227 | if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;\r | |
3228 | #endif\r | |
3229 | }\r | |
3230 | FatFs[vol] = fs; /* Register new fs object */\r | |
3231 | \r | |
3232 | if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */\r | |
3233 | \r | |
70702af1 | 3234 | res = find_volume(&path, &fs, 0); /* Force mounted the volume */\r |
53668523 L |
3235 | LEAVE_FF(fs, res);\r |
3236 | }\r | |
3237 | \r | |
3238 | \r | |
3239 | \r | |
3240 | \r | |
3241 | /*-----------------------------------------------------------------------*/\r | |
3242 | /* Open or Create a File */\r | |
3243 | /*-----------------------------------------------------------------------*/\r | |
3244 | \r | |
3245 | FRESULT f_open (\r | |
3246 | FIL* fp, /* Pointer to the blank file object */\r | |
3247 | const TCHAR* path, /* Pointer to the file name */\r | |
3248 | BYTE mode /* Access mode and file open mode flags */\r | |
3249 | )\r | |
3250 | {\r | |
3251 | FRESULT res;\r | |
3252 | DIR dj;\r | |
70702af1 L |
3253 | FATFS *fs;\r |
3254 | #if !_FS_READONLY\r | |
3255 | DWORD dw, cl, bcs, clst, sc;\r | |
3256 | FSIZE_t ofs;\r | |
3257 | #endif\r | |
3258 | DEF_NAMBUF\r | |
53668523 L |
3259 | \r |
3260 | \r | |
3261 | if (!fp) return FR_INVALID_OBJECT;\r | |
53668523 | 3262 | \r |
70702af1 L |
3263 | /* Get logical drive */\r |
3264 | mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND | FA_SEEKEND;\r | |
3265 | res = find_volume(&path, &fs, mode);\r | |
53668523 | 3266 | if (res == FR_OK) {\r |
70702af1 L |
3267 | dj.obj.fs = fs;\r |
3268 | INIT_NAMBUF(fs);\r | |
53668523 | 3269 | res = follow_path(&dj, path); /* Follow the file path */\r |
53668523 L |
3270 | #if !_FS_READONLY /* R/W configuration */\r |
3271 | if (res == FR_OK) {\r | |
70702af1 | 3272 | if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */\r |
53668523 | 3273 | res = FR_INVALID_NAME;\r |
70702af1 L |
3274 | }\r |
3275 | #if _FS_LOCK != 0\r | |
3276 | else {\r | |
53668523 | 3277 | res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r |
70702af1 | 3278 | }\r |
53668523 L |
3279 | #endif\r |
3280 | }\r | |
3281 | /* Create or Open a file */\r | |
3282 | if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\r | |
53668523 L |
3283 | if (res != FR_OK) { /* No file, create new */\r |
3284 | if (res == FR_NO_FILE) /* There is no file to open, create a new entry */\r | |
70702af1 | 3285 | #if _FS_LOCK != 0\r |
53668523 L |
3286 | res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;\r |
3287 | #else\r | |
3288 | res = dir_register(&dj);\r | |
3289 | #endif\r | |
3290 | mode |= FA_CREATE_ALWAYS; /* File is created */\r | |
53668523 L |
3291 | }\r |
3292 | else { /* Any object is already existing */\r | |
70702af1 | 3293 | if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */\r |
53668523 L |
3294 | res = FR_DENIED;\r |
3295 | } else {\r | |
70702af1 | 3296 | if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */\r |
53668523 L |
3297 | }\r |
3298 | }\r | |
3299 | if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */\r | |
70702af1 L |
3300 | dw = GET_FATTIME();\r |
3301 | #if _FS_EXFAT\r | |
3302 | if (fs->fs_type == FS_EXFAT) {\r | |
3303 | /* Get current allocation info */\r | |
3304 | fp->obj.fs = fs;\r | |
3305 | fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);\r | |
3306 | fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r | |
3307 | fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
3308 | /* Initialize directory entry block */\r | |
3309 | st_dword(fs->dirbuf + XDIR_CrtTime, dw); /* Set created time */\r | |
3310 | fs->dirbuf[XDIR_CrtTime10] = 0;\r | |
3311 | st_dword(fs->dirbuf + XDIR_ModTime, dw); /* Set modified time */\r | |
3312 | fs->dirbuf[XDIR_ModTime10] = 0;\r | |
3313 | fs->dirbuf[XDIR_Attr] = AM_ARC; /* Reset attribute */\r | |
3314 | st_dword(fs->dirbuf + XDIR_FstClus, 0); /* Reset file allocation info */\r | |
3315 | st_qword(fs->dirbuf + XDIR_FileSize, 0);\r | |
3316 | st_qword(fs->dirbuf + XDIR_ValidFileSize, 0);\r | |
3317 | fs->dirbuf[XDIR_GenFlags] = 1;\r | |
3318 | res = store_xdir(&dj);\r | |
3319 | if (res == FR_OK && fp->obj.sclust) { /* Remove the cluster chain if exist */\r | |
3320 | res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r | |
3321 | fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */\r | |
3322 | }\r | |
3323 | } else\r | |
3324 | #endif\r | |
3325 | {\r | |
3326 | /* Clean directory info */\r | |
3327 | st_dword(dj.dir + DIR_CrtTime, dw); /* Set created time */\r | |
3328 | st_dword(dj.dir + DIR_ModTime, dw); /* Set modified time */\r | |
3329 | dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */\r | |
3330 | cl = ld_clust(fs, dj.dir); /* Get cluster chain */\r | |
3331 | st_clust(fs, dj.dir, 0); /* Reset file allocation info */\r | |
3332 | st_dword(dj.dir + DIR_FileSize, 0);\r | |
3333 | fs->wflag = 1;\r | |
3334 | \r | |
3335 | if (cl) { /* Remove the cluster chain if exist */\r | |
3336 | dw = fs->winsect;\r | |
3337 | res = remove_chain(&dj.obj, cl, 0);\r | |
3338 | if (res == FR_OK) {\r | |
3339 | res = move_window(fs, dw);\r | |
3340 | fs->last_clst = cl - 1; /* Reuse the cluster hole */\r | |
3341 | }\r | |
53668523 L |
3342 | }\r |
3343 | }\r | |
3344 | }\r | |
3345 | }\r | |
3346 | else { /* Open an existing file */\r | |
70702af1 L |
3347 | if (res == FR_OK) { /* Following succeeded */\r |
3348 | if (dj.obj.attr & AM_DIR) { /* It is a directory */\r | |
53668523 L |
3349 | res = FR_NO_FILE;\r |
3350 | } else {\r | |
70702af1 | 3351 | if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* R/O violation */\r |
53668523 | 3352 | res = FR_DENIED;\r |
70702af1 | 3353 | }\r |
53668523 L |
3354 | }\r |
3355 | }\r | |
3356 | }\r | |
3357 | if (res == FR_OK) {\r | |
3358 | if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */\r | |
70702af1 L |
3359 | mode |= FA_MODIFIED;\r |
3360 | fp->dir_sect = fs->winsect; /* Pointer to the directory entry */\r | |
3361 | fp->dir_ptr = dj.dir;\r | |
3362 | #if _FS_LOCK != 0\r | |
3363 | fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r | |
3364 | if (!fp->obj.lockid) res = FR_INT_ERR;\r | |
53668523 L |
3365 | #endif\r |
3366 | }\r | |
70702af1 L |
3367 | #else /* R/O configuration */\r |
3368 | if (res == FR_OK) {\r | |
3369 | if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */\r | |
53668523 L |
3370 | res = FR_INVALID_NAME;\r |
3371 | } else {\r | |
70702af1 | 3372 | if (dj.obj.attr & AM_DIR) { /* It is a directory */\r |
53668523 | 3373 | res = FR_NO_FILE;\r |
70702af1 | 3374 | }\r |
53668523 L |
3375 | }\r |
3376 | }\r | |
3377 | #endif\r | |
70702af1 L |
3378 | \r |
3379 | if (res == FR_OK) {\r | |
3380 | #if _FS_EXFAT\r | |
3381 | if (fs->fs_type == FS_EXFAT) {\r | |
3382 | fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get allocation info */\r | |
3383 | fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r | |
3384 | fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
3385 | fp->obj.c_scl = dj.obj.sclust;\r | |
3386 | fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r | |
3387 | fp->obj.c_ofs = dj.blk_ofs;\r | |
3388 | } else\r | |
3389 | #endif\r | |
3390 | {\r | |
3391 | fp->obj.sclust = ld_clust(fs, dj.dir); /* Get allocation info */\r | |
3392 | fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);\r | |
3393 | }\r | |
3394 | #if _USE_FASTSEEK\r | |
3395 | fp->cltbl = 0; /* Disable fast seek mode */\r | |
3396 | #endif\r | |
3397 | fp->obj.fs = fs; /* Validate the file object */\r | |
3398 | fp->obj.id = fs->id;\r | |
3399 | fp->flag = mode; /* Set file access mode */\r | |
3400 | fp->err = 0; /* Clear error flag */\r | |
3401 | fp->sect = 0; /* Invalidate current data sector */\r | |
3402 | fp->fptr = 0; /* Set file pointer top of the file */\r | |
3403 | #if !_FS_READONLY\r | |
3404 | #if !_FS_TINY\r | |
3405 | mem_set(fp->buf, 0, _MAX_SS); /* Clear sector buffer */\r | |
3406 | #endif\r | |
3407 | if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */\r | |
3408 | fp->fptr = fp->obj.objsize; /* Offset to seek */\r | |
3409 | bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */\r | |
3410 | clst = fp->obj.sclust; /* Follow the cluster chain */\r | |
3411 | for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {\r | |
3412 | clst = get_fat(&fp->obj, clst);\r | |
3413 | if (clst <= 1) res = FR_INT_ERR;\r | |
3414 | if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;\r | |
3415 | }\r | |
3416 | fp->clust = clst;\r | |
3417 | if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */\r | |
3418 | if ((sc = clust2sect(fs, clst)) == 0) {\r | |
3419 | res = FR_INT_ERR;\r | |
3420 | } else {\r | |
3421 | fp->sect = sc + (DWORD)(ofs / SS(fs));\r | |
3422 | #if !_FS_TINY\r | |
3423 | if (disk_read(fs->drv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;\r | |
3424 | #endif\r | |
3425 | }\r | |
3426 | }\r | |
3427 | }\r | |
53668523 | 3428 | #endif\r |
53668523 | 3429 | }\r |
70702af1 L |
3430 | \r |
3431 | FREE_NAMBUF();\r | |
53668523 L |
3432 | }\r |
3433 | \r | |
70702af1 L |
3434 | if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */\r |
3435 | \r | |
3436 | LEAVE_FF(fs, res);\r | |
53668523 L |
3437 | }\r |
3438 | \r | |
3439 | \r | |
3440 | \r | |
3441 | \r | |
3442 | /*-----------------------------------------------------------------------*/\r | |
3443 | /* Read File */\r | |
3444 | /*-----------------------------------------------------------------------*/\r | |
3445 | \r | |
3446 | FRESULT f_read (\r | |
70702af1 L |
3447 | FIL* fp, /* Pointer to the file object */\r |
3448 | void* buff, /* Pointer to data buffer */\r | |
3449 | UINT btr, /* Number of bytes to read */\r | |
3450 | UINT* br /* Pointer to number of bytes read */\r | |
53668523 L |
3451 | )\r |
3452 | {\r | |
3453 | FRESULT res;\r | |
70702af1 L |
3454 | FATFS *fs;\r |
3455 | DWORD clst, sect;\r | |
3456 | FSIZE_t remain;\r | |
3457 | UINT rcnt, cc, csect;\r | |
3458 | BYTE *rbuff = (BYTE*)buff;\r | |
53668523 L |
3459 | \r |
3460 | \r | |
3461 | *br = 0; /* Clear read byte counter */\r | |
70702af1 L |
3462 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
3463 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */\r | |
3464 | if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r | |
3465 | remain = fp->obj.objsize - fp->fptr;\r | |
53668523 L |
3466 | if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */\r |
3467 | \r | |
3468 | for ( ; btr; /* Repeat until all data read */\r | |
3469 | rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {\r | |
70702af1 L |
3470 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */\r |
3471 | csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */\r | |
3472 | if (csect == 0) { /* On the cluster boundary? */\r | |
53668523 | 3473 | if (fp->fptr == 0) { /* On the top of the file? */\r |
70702af1 | 3474 | clst = fp->obj.sclust; /* Follow cluster chain from the origin */\r |
53668523 L |
3475 | } else { /* Middle or end of the file */\r |
3476 | #if _USE_FASTSEEK\r | |
70702af1 | 3477 | if (fp->cltbl) {\r |
53668523 | 3478 | clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */\r |
70702af1 | 3479 | } else\r |
53668523 | 3480 | #endif\r |
70702af1 L |
3481 | {\r |
3482 | clst = get_fat(&fp->obj, fp->clust); /* Follow cluster chain on the FAT */\r | |
3483 | }\r | |
53668523 | 3484 | }\r |
70702af1 L |
3485 | if (clst < 2) ABORT(fs, FR_INT_ERR);\r |
3486 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
3487 | fp->clust = clst; /* Update current cluster */\r |
3488 | }\r | |
70702af1 L |
3489 | sect = clust2sect(fs, fp->clust); /* Get current sector */\r |
3490 | if (!sect) ABORT(fs, FR_INT_ERR);\r | |
53668523 | 3491 | sect += csect;\r |
70702af1 | 3492 | cc = btr / SS(fs); /* When remaining bytes >= sector size, */\r |
53668523 | 3493 | if (cc) { /* Read maximum contiguous sectors directly */\r |
70702af1 L |
3494 | if (csect + cc > fs->csize) { /* Clip at cluster boundary */\r |
3495 | cc = fs->csize - csect;\r | |
3496 | }\r | |
3497 | if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
3498 | #if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */\r |
3499 | #if _FS_TINY\r | |
70702af1 L |
3500 | if (fs->wflag && fs->winsect - sect < cc) {\r |
3501 | mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));\r | |
3502 | }\r | |
53668523 | 3503 | #else\r |
70702af1 L |
3504 | if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {\r |
3505 | mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));\r | |
3506 | }\r | |
53668523 L |
3507 | #endif\r |
3508 | #endif\r | |
70702af1 | 3509 | rcnt = SS(fs) * cc; /* Number of bytes transferred */\r |
53668523 L |
3510 | continue;\r |
3511 | }\r | |
3512 | #if !_FS_TINY\r | |
70702af1 | 3513 | if (fp->sect != sect) { /* Load data sector if not in cache */\r |
53668523 | 3514 | #if !_FS_READONLY\r |
70702af1 L |
3515 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */\r |
3516 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
3517 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
3518 | }\r |
3519 | #endif\r | |
70702af1 | 3520 | if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */\r |
53668523 L |
3521 | }\r |
3522 | #endif\r | |
70702af1 | 3523 | fp->sect = sect;\r |
53668523 | 3524 | }\r |
70702af1 L |
3525 | rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */\r |
3526 | if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */\r | |
53668523 | 3527 | #if _FS_TINY\r |
70702af1 L |
3528 | if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */\r |
3529 | mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */\r | |
53668523 | 3530 | #else\r |
70702af1 | 3531 | mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */\r |
53668523 L |
3532 | #endif\r |
3533 | }\r | |
3534 | \r | |
70702af1 | 3535 | LEAVE_FF(fs, FR_OK);\r |
53668523 L |
3536 | }\r |
3537 | \r | |
3538 | \r | |
3539 | \r | |
3540 | \r | |
3541 | #if !_FS_READONLY\r | |
3542 | /*-----------------------------------------------------------------------*/\r | |
3543 | /* Write File */\r | |
3544 | /*-----------------------------------------------------------------------*/\r | |
3545 | \r | |
3546 | FRESULT f_write (\r | |
3547 | FIL* fp, /* Pointer to the file object */\r | |
70702af1 | 3548 | const void* buff, /* Pointer to the data to be written */\r |
53668523 L |
3549 | UINT btw, /* Number of bytes to write */\r |
3550 | UINT* bw /* Pointer to number of bytes written */\r | |
3551 | )\r | |
3552 | {\r | |
3553 | FRESULT res;\r | |
70702af1 | 3554 | FATFS *fs;\r |
53668523 | 3555 | DWORD clst, sect;\r |
70702af1 | 3556 | UINT wcnt, cc, csect;\r |
53668523 | 3557 | const BYTE *wbuff = (const BYTE*)buff;\r |
53668523 L |
3558 | \r |
3559 | \r | |
3560 | *bw = 0; /* Clear write byte counter */\r | |
70702af1 L |
3561 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
3562 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */\r | |
3563 | if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r | |
53668523 | 3564 | \r |
70702af1 L |
3565 | /* Check fptr wrap-around (file size cannot reach 4GiB on FATxx) */\r |
3566 | if ((!_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {\r | |
3567 | btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);\r | |
3568 | }\r | |
53668523 L |
3569 | \r |
3570 | for ( ; btw; /* Repeat until all data written */\r | |
70702af1 L |
3571 | wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) {\r |
3572 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */\r | |
3573 | csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */\r | |
3574 | if (csect == 0) { /* On the cluster boundary? */\r | |
53668523 | 3575 | if (fp->fptr == 0) { /* On the top of the file? */\r |
70702af1 L |
3576 | clst = fp->obj.sclust; /* Follow from the origin */\r |
3577 | if (clst == 0) { /* If no cluster is allocated, */\r | |
3578 | clst = create_chain(&fp->obj, 0); /* create a new cluster chain */\r | |
3579 | }\r | |
3580 | } else { /* On the middle or end of the file */\r | |
53668523 | 3581 | #if _USE_FASTSEEK\r |
70702af1 | 3582 | if (fp->cltbl) {\r |
53668523 | 3583 | clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */\r |
70702af1 | 3584 | } else\r |
53668523 | 3585 | #endif\r |
70702af1 L |
3586 | {\r |
3587 | clst = create_chain(&fp->obj, fp->clust); /* Follow or stretch cluster chain on the FAT */\r | |
3588 | }\r | |
53668523 L |
3589 | }\r |
3590 | if (clst == 0) break; /* Could not allocate a new cluster (disk full) */\r | |
70702af1 L |
3591 | if (clst == 1) ABORT(fs, FR_INT_ERR);\r |
3592 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
53668523 | 3593 | fp->clust = clst; /* Update current cluster */\r |
70702af1 | 3594 | if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */\r |
53668523 L |
3595 | }\r |
3596 | #if _FS_TINY\r | |
70702af1 | 3597 | if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */\r |
53668523 | 3598 | #else\r |
70702af1 L |
3599 | if (fp->flag & FA_DIRTY) { /* Write-back sector cache */\r |
3600 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
3601 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
3602 | }\r |
3603 | #endif\r | |
70702af1 L |
3604 | sect = clust2sect(fs, fp->clust); /* Get current sector */\r |
3605 | if (!sect) ABORT(fs, FR_INT_ERR);\r | |
53668523 | 3606 | sect += csect;\r |
70702af1 | 3607 | cc = btw / SS(fs); /* When remaining bytes >= sector size, */\r |
53668523 | 3608 | if (cc) { /* Write maximum contiguous sectors directly */\r |
70702af1 L |
3609 | if (csect + cc > fs->csize) { /* Clip at cluster boundary */\r |
3610 | cc = fs->csize - csect;\r | |
3611 | }\r | |
3612 | if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
3613 | #if _FS_MINIMIZE <= 2\r |
3614 | #if _FS_TINY\r | |
70702af1 L |
3615 | if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */\r |
3616 | mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));\r | |
3617 | fs->wflag = 0;\r | |
53668523 L |
3618 | }\r |
3619 | #else\r | |
70702af1 L |
3620 | if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */\r |
3621 | mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));\r | |
3622 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
3623 | }\r |
3624 | #endif\r | |
3625 | #endif\r | |
70702af1 | 3626 | wcnt = SS(fs) * cc; /* Number of bytes transferred */\r |
53668523 L |
3627 | continue;\r |
3628 | }\r | |
3629 | #if _FS_TINY\r | |
70702af1 L |
3630 | if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */\r |
3631 | if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);\r | |
3632 | fs->winsect = sect;\r | |
53668523 L |
3633 | }\r |
3634 | #else\r | |
70702af1 L |
3635 | if (fp->sect != sect && /* Fill sector cache with file data */\r |
3636 | fp->fptr < fp->obj.objsize &&\r | |
3637 | disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) {\r | |
3638 | ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
3639 | }\r |
3640 | #endif\r | |
70702af1 | 3641 | fp->sect = sect;\r |
53668523 | 3642 | }\r |
70702af1 L |
3643 | wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */\r |
3644 | if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */\r | |
53668523 | 3645 | #if _FS_TINY\r |
70702af1 L |
3646 | if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */\r |
3647 | mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */\r | |
3648 | fs->wflag = 1;\r | |
53668523 | 3649 | #else\r |
70702af1 L |
3650 | mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */\r |
3651 | fp->flag |= FA_DIRTY;\r | |
53668523 L |
3652 | #endif\r |
3653 | }\r | |
3654 | \r | |
70702af1 | 3655 | fp->flag |= FA_MODIFIED; /* Set file change flag */\r |
53668523 | 3656 | \r |
70702af1 | 3657 | LEAVE_FF(fs, FR_OK);\r |
53668523 L |
3658 | }\r |
3659 | \r | |
3660 | \r | |
3661 | \r | |
3662 | \r | |
3663 | /*-----------------------------------------------------------------------*/\r | |
3664 | /* Synchronize the File */\r | |
3665 | /*-----------------------------------------------------------------------*/\r | |
3666 | \r | |
3667 | FRESULT f_sync (\r | |
3668 | FIL* fp /* Pointer to the file object */\r | |
3669 | )\r | |
3670 | {\r | |
3671 | FRESULT res;\r | |
70702af1 | 3672 | FATFS *fs;\r |
53668523 L |
3673 | DWORD tm;\r |
3674 | BYTE *dir;\r | |
70702af1 | 3675 | DEF_NAMBUF\r |
53668523 L |
3676 | \r |
3677 | \r | |
70702af1 | 3678 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
53668523 | 3679 | if (res == FR_OK) {\r |
70702af1 | 3680 | if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */\r |
53668523 | 3681 | #if !_FS_TINY\r |
70702af1 L |
3682 | if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */\r |
3683 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);\r | |
3684 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
3685 | }\r |
3686 | #endif\r | |
3687 | /* Update the directory entry */\r | |
70702af1 L |
3688 | tm = GET_FATTIME(); /* Modified time */\r |
3689 | #if _FS_EXFAT\r | |
3690 | if (fs->fs_type == FS_EXFAT) {\r | |
3691 | res = fill_fat_chain(&fp->obj); /* Create FAT chain if needed */\r | |
3692 | if (res == FR_OK) {\r | |
3693 | DIR dj;\r | |
3694 | \r | |
3695 | INIT_NAMBUF(fs);\r | |
3696 | res = load_obj_dir(&dj, &fp->obj); /* Load directory entry block */\r | |
3697 | if (res == FR_OK) {\r | |
3698 | fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive bit */\r | |
3699 | fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation info */\r | |
3700 | st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);\r | |
3701 | st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);\r | |
3702 | st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);\r | |
3703 | st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */\r | |
3704 | fs->dirbuf[XDIR_ModTime10] = 0;\r | |
3705 | st_dword(fs->dirbuf + XDIR_AccTime, 0);\r | |
3706 | res = store_xdir(&dj); /* Restore it to the directory */\r | |
3707 | if (res == FR_OK) {\r | |
3708 | res = sync_fs(fs);\r | |
3709 | fp->flag &= (BYTE)~FA_MODIFIED;\r | |
3710 | }\r | |
3711 | }\r | |
3712 | FREE_NAMBUF();\r | |
3713 | }\r | |
3714 | } else\r | |
3715 | #endif\r | |
3716 | {\r | |
3717 | res = move_window(fs, fp->dir_sect);\r | |
3718 | if (res == FR_OK) {\r | |
3719 | dir = fp->dir_ptr;\r | |
3720 | dir[DIR_Attr] |= AM_ARC; /* Set archive bit */\r | |
3721 | st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation info */\r | |
3722 | st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */\r | |
3723 | st_dword(dir + DIR_ModTime, tm); /* Update modified time */\r | |
3724 | st_word(dir + DIR_LstAccDate, 0);\r | |
3725 | fs->wflag = 1;\r | |
3726 | res = sync_fs(fs); /* Restore it to the directory */\r | |
3727 | fp->flag &= (BYTE)~FA_MODIFIED;\r | |
3728 | }\r | |
53668523 L |
3729 | }\r |
3730 | }\r | |
3731 | }\r | |
3732 | \r | |
70702af1 | 3733 | LEAVE_FF(fs, res);\r |
53668523 L |
3734 | }\r |
3735 | \r | |
3736 | #endif /* !_FS_READONLY */\r | |
3737 | \r | |
3738 | \r | |
3739 | \r | |
3740 | \r | |
3741 | /*-----------------------------------------------------------------------*/\r | |
3742 | /* Close File */\r | |
3743 | /*-----------------------------------------------------------------------*/\r | |
3744 | \r | |
3745 | FRESULT f_close (\r | |
70702af1 | 3746 | FIL* fp /* Pointer to the file object to be closed */\r |
53668523 L |
3747 | )\r |
3748 | {\r | |
3749 | FRESULT res;\r | |
70702af1 | 3750 | FATFS *fs;\r |
53668523 L |
3751 | \r |
3752 | #if !_FS_READONLY\r | |
3753 | res = f_sync(fp); /* Flush cached data */\r | |
3754 | if (res == FR_OK)\r | |
3755 | #endif\r | |
3756 | {\r | |
70702af1 | 3757 | res = validate(&fp->obj, &fs); /* Lock volume */\r |
53668523 | 3758 | if (res == FR_OK) {\r |
70702af1 L |
3759 | #if _FS_LOCK != 0\r |
3760 | res = dec_lock(fp->obj.lockid); /* Decrement file open counter */\r | |
53668523 L |
3761 | if (res == FR_OK)\r |
3762 | #endif\r | |
70702af1 L |
3763 | {\r |
3764 | fp->obj.fs = 0; /* Invalidate file object */\r | |
3765 | }\r | |
53668523 L |
3766 | #if _FS_REENTRANT\r |
3767 | unlock_fs(fs, FR_OK); /* Unlock volume */\r | |
3768 | #endif\r | |
3769 | }\r | |
3770 | }\r | |
3771 | return res;\r | |
3772 | }\r | |
3773 | \r | |
3774 | \r | |
3775 | \r | |
3776 | \r | |
70702af1 | 3777 | #if _FS_RPATH >= 1\r |
53668523 L |
3778 | /*-----------------------------------------------------------------------*/\r |
3779 | /* Change Current Directory or Current Drive, Get Current Directory */\r | |
3780 | /*-----------------------------------------------------------------------*/\r | |
3781 | \r | |
53668523 L |
3782 | #if _VOLUMES >= 2\r |
3783 | FRESULT f_chdrive (\r | |
3784 | const TCHAR* path /* Drive number */\r | |
3785 | )\r | |
3786 | {\r | |
3787 | int vol;\r | |
3788 | \r | |
3789 | \r | |
70702af1 | 3790 | /* Get logical drive number */\r |
53668523 L |
3791 | vol = get_ldnumber(&path);\r |
3792 | if (vol < 0) return FR_INVALID_DRIVE;\r | |
3793 | \r | |
70702af1 | 3794 | CurrVol = (BYTE)vol; /* Set it as current volume */\r |
53668523 L |
3795 | \r |
3796 | return FR_OK;\r | |
3797 | }\r | |
3798 | #endif\r | |
3799 | \r | |
3800 | \r | |
3801 | FRESULT f_chdir (\r | |
3802 | const TCHAR* path /* Pointer to the directory path */\r | |
3803 | )\r | |
3804 | {\r | |
3805 | FRESULT res;\r | |
3806 | DIR dj;\r | |
70702af1 L |
3807 | FATFS *fs;\r |
3808 | DEF_NAMBUF\r | |
53668523 | 3809 | \r |
70702af1 L |
3810 | /* Get logical drive */\r |
3811 | res = find_volume(&path, &fs, 0);\r | |
53668523 | 3812 | if (res == FR_OK) {\r |
70702af1 L |
3813 | dj.obj.fs = fs;\r |
3814 | INIT_NAMBUF(fs);\r | |
53668523 | 3815 | res = follow_path(&dj, path); /* Follow the path */\r |
53668523 | 3816 | if (res == FR_OK) { /* Follow completed */\r |
70702af1 L |
3817 | if (dj.fn[NSFLAG] & NS_NONAME) {\r |
3818 | fs->cdir = dj.obj.sclust; /* It is the start directory itself */\r | |
3819 | #if _FS_EXFAT\r | |
3820 | if (fs->fs_type == FS_EXFAT) {\r | |
3821 | fs->cdc_scl = dj.obj.c_scl;\r | |
3822 | fs->cdc_size = dj.obj.c_size;\r | |
3823 | fs->cdc_ofs = dj.obj.c_ofs;\r | |
3824 | }\r | |
3825 | #endif\r | |
53668523 | 3826 | } else {\r |
70702af1 L |
3827 | if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */\r |
3828 | #if _FS_EXFAT\r | |
3829 | if (fs->fs_type == FS_EXFAT) {\r | |
3830 | fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */\r | |
3831 | fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */\r | |
3832 | fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r | |
3833 | fs->cdc_ofs = dj.blk_ofs;\r | |
3834 | } else\r | |
3835 | #endif\r | |
3836 | {\r | |
3837 | fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */\r | |
3838 | }\r | |
3839 | } else {\r | |
53668523 | 3840 | res = FR_NO_PATH; /* Reached but a file */\r |
70702af1 | 3841 | }\r |
53668523 L |
3842 | }\r |
3843 | }\r | |
70702af1 | 3844 | FREE_NAMBUF();\r |
53668523 L |
3845 | if (res == FR_NO_FILE) res = FR_NO_PATH;\r |
3846 | }\r | |
3847 | \r | |
70702af1 | 3848 | LEAVE_FF(fs, res);\r |
53668523 L |
3849 | }\r |
3850 | \r | |
3851 | \r | |
3852 | #if _FS_RPATH >= 2\r | |
3853 | FRESULT f_getcwd (\r | |
3854 | TCHAR* buff, /* Pointer to the directory path */\r | |
3855 | UINT len /* Size of path */\r | |
3856 | )\r | |
3857 | {\r | |
3858 | FRESULT res;\r | |
3859 | DIR dj;\r | |
70702af1 | 3860 | FATFS *fs;\r |
53668523 L |
3861 | UINT i, n;\r |
3862 | DWORD ccl;\r | |
3863 | TCHAR *tp;\r | |
3864 | FILINFO fno;\r | |
70702af1 | 3865 | DEF_NAMBUF\r |
53668523 L |
3866 | \r |
3867 | \r | |
3868 | *buff = 0;\r | |
70702af1 L |
3869 | /* Get logical drive */\r |
3870 | res = find_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */\r | |
53668523 | 3871 | if (res == FR_OK) {\r |
70702af1 L |
3872 | dj.obj.fs = fs;\r |
3873 | INIT_NAMBUF(fs);\r | |
53668523 | 3874 | i = len; /* Bottom of buffer (directory stack base) */\r |
70702af1 L |
3875 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */\r |
3876 | dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */\r | |
3877 | while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */\r | |
3878 | res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */\r | |
53668523 | 3879 | if (res != FR_OK) break;\r |
70702af1 L |
3880 | res = move_window(fs, dj.sect);\r |
3881 | if (res != FR_OK) break;\r | |
3882 | dj.obj.sclust = ld_clust(fs, dj.dir); /* Goto parent directory */\r | |
3883 | res = dir_sdi(&dj, 0);\r | |
3884 | if (res != FR_OK) break;\r | |
3885 | do { /* Find the entry links to the child directory */\r | |
3886 | res = dir_read(&dj, 0);\r | |
3887 | if (res != FR_OK) break;\r | |
3888 | if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */\r | |
3889 | res = dir_next(&dj, 0);\r | |
3890 | } while (res == FR_OK);\r | |
3891 | if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */\r | |
3892 | if (res != FR_OK) break;\r | |
3893 | get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */\r | |
3894 | for (n = 0; fno.fname[n]; n++) ;\r | |
3895 | if (i < n + 3) {\r | |
3896 | res = FR_NOT_ENOUGH_CORE; break;\r | |
3897 | }\r | |
3898 | while (n) buff[--i] = fno.fname[--n];\r | |
3899 | buff[--i] = '/';\r | |
53668523 | 3900 | }\r |
53668523 L |
3901 | }\r |
3902 | tp = buff;\r | |
3903 | if (res == FR_OK) {\r | |
3904 | #if _VOLUMES >= 2\r | |
3905 | *tp++ = '0' + CurrVol; /* Put drive number */\r | |
3906 | *tp++ = ':';\r | |
3907 | #endif\r | |
3908 | if (i == len) { /* Root-directory */\r | |
3909 | *tp++ = '/';\r | |
3910 | } else { /* Sub-directroy */\r | |
3911 | do /* Add stacked path str */\r | |
3912 | *tp++ = buff[i++];\r | |
3913 | while (i < len);\r | |
3914 | }\r | |
3915 | }\r | |
3916 | *tp = 0;\r | |
70702af1 | 3917 | FREE_NAMBUF();\r |
53668523 L |
3918 | }\r |
3919 | \r | |
70702af1 | 3920 | LEAVE_FF(fs, res);\r |
53668523 | 3921 | }\r |
70702af1 | 3922 | \r |
53668523 L |
3923 | #endif /* _FS_RPATH >= 2 */\r |
3924 | #endif /* _FS_RPATH >= 1 */\r | |
3925 | \r | |
3926 | \r | |
3927 | \r | |
3928 | #if _FS_MINIMIZE <= 2\r | |
3929 | /*-----------------------------------------------------------------------*/\r | |
3930 | /* Seek File R/W Pointer */\r | |
3931 | /*-----------------------------------------------------------------------*/\r | |
3932 | \r | |
3933 | FRESULT f_lseek (\r | |
3934 | FIL* fp, /* Pointer to the file object */\r | |
70702af1 | 3935 | FSIZE_t ofs /* File pointer from top of file */\r |
53668523 L |
3936 | )\r |
3937 | {\r | |
3938 | FRESULT res;\r | |
70702af1 L |
3939 | FATFS *fs;\r |
3940 | DWORD clst, bcs, nsect;\r | |
3941 | FSIZE_t ifptr;\r | |
3942 | #if _USE_FASTSEEK\r | |
3943 | DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;\r | |
3944 | #endif\r | |
53668523 | 3945 | \r |
70702af1 L |
3946 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
3947 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */\r | |
53668523 L |
3948 | #if _USE_FASTSEEK\r |
3949 | if (fp->cltbl) { /* Fast seek */\r | |
53668523 L |
3950 | if (ofs == CREATE_LINKMAP) { /* Create CLMT */\r |
3951 | tbl = fp->cltbl;\r | |
3952 | tlen = *tbl++; ulen = 2; /* Given table size and required table size */\r | |
70702af1 | 3953 | cl = fp->obj.sclust; /* Origin of the chain */\r |
53668523 L |
3954 | if (cl) {\r |
3955 | do {\r | |
3956 | /* Get a fragment */\r | |
3957 | tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */\r | |
3958 | do {\r | |
3959 | pcl = cl; ncl++;\r | |
70702af1 L |
3960 | cl = get_fat(&fp->obj, cl);\r |
3961 | if (cl <= 1) ABORT(fs, FR_INT_ERR);\r | |
3962 | if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
3963 | } while (cl == pcl + 1);\r |
3964 | if (ulen <= tlen) { /* Store the length and top of the fragment */\r | |
3965 | *tbl++ = ncl; *tbl++ = tcl;\r | |
3966 | }\r | |
70702af1 | 3967 | } while (cl < fs->n_fatent); /* Repeat until end of chain */\r |
53668523 L |
3968 | }\r |
3969 | *fp->cltbl = ulen; /* Number of items used */\r | |
70702af1 | 3970 | if (ulen <= tlen) {\r |
53668523 | 3971 | *tbl = 0; /* Terminate table */\r |
70702af1 | 3972 | } else {\r |
53668523 | 3973 | res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */\r |
70702af1 | 3974 | }\r |
53668523 | 3975 | } else { /* Fast seek */\r |
70702af1 | 3976 | if (ofs > fp->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */\r |
53668523 L |
3977 | fp->fptr = ofs; /* Set file pointer */\r |
3978 | if (ofs) {\r | |
3979 | fp->clust = clmt_clust(fp, ofs - 1);\r | |
70702af1 L |
3980 | dsc = clust2sect(fs, fp->clust);\r |
3981 | if (!dsc) ABORT(fs, FR_INT_ERR);\r | |
3982 | dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);\r | |
3983 | if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */\r | |
53668523 L |
3984 | #if !_FS_TINY\r |
3985 | #if !_FS_READONLY\r | |
70702af1 L |
3986 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */\r |
3987 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
3988 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
3989 | }\r |
3990 | #endif\r | |
70702af1 | 3991 | if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */\r |
53668523 | 3992 | #endif\r |
70702af1 | 3993 | fp->sect = dsc;\r |
53668523 L |
3994 | }\r |
3995 | }\r | |
3996 | }\r | |
3997 | } else\r | |
3998 | #endif\r | |
3999 | \r | |
4000 | /* Normal Seek */\r | |
4001 | {\r | |
70702af1 L |
4002 | #if _FS_EXFAT\r |
4003 | if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4GiB-1 if at FATxx */\r | |
53668523 | 4004 | #endif\r |
70702af1 L |
4005 | if (ofs > fp->obj.objsize && (_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */\r |
4006 | ofs = fp->obj.objsize;\r | |
4007 | }\r | |
53668523 L |
4008 | ifptr = fp->fptr;\r |
4009 | fp->fptr = nsect = 0;\r | |
4010 | if (ofs) {\r | |
70702af1 | 4011 | bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */\r |
53668523 L |
4012 | if (ifptr > 0 &&\r |
4013 | (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */\r | |
70702af1 | 4014 | fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */\r |
53668523 L |
4015 | ofs -= fp->fptr;\r |
4016 | clst = fp->clust;\r | |
4017 | } else { /* When seek to back cluster, */\r | |
70702af1 | 4018 | clst = fp->obj.sclust; /* start from the first cluster */\r |
53668523 L |
4019 | #if !_FS_READONLY\r |
4020 | if (clst == 0) { /* If no cluster chain, create a new chain */\r | |
70702af1 L |
4021 | clst = create_chain(&fp->obj, 0);\r |
4022 | if (clst == 1) ABORT(fs, FR_INT_ERR);\r | |
4023 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
4024 | fp->obj.sclust = clst;\r | |
53668523 L |
4025 | }\r |
4026 | #endif\r | |
4027 | fp->clust = clst;\r | |
4028 | }\r | |
4029 | if (clst != 0) {\r | |
4030 | while (ofs > bcs) { /* Cluster following loop */\r | |
70702af1 | 4031 | ofs -= bcs; fp->fptr += bcs;\r |
53668523 L |
4032 | #if !_FS_READONLY\r |
4033 | if (fp->flag & FA_WRITE) { /* Check if in write mode or not */\r | |
70702af1 L |
4034 | if (_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */\r |
4035 | fp->obj.objsize = fp->fptr;\r | |
4036 | fp->flag |= FA_MODIFIED;\r | |
4037 | }\r | |
4038 | clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */\r | |
4039 | if (clst == 0) { /* Clip file size in case of disk full */\r | |
4040 | ofs = 0; break;\r | |
53668523 L |
4041 | }\r |
4042 | } else\r | |
4043 | #endif\r | |
70702af1 L |
4044 | {\r |
4045 | clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */\r | |
4046 | }\r | |
4047 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
4048 | if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);\r | |
53668523 | 4049 | fp->clust = clst;\r |
53668523 L |
4050 | }\r |
4051 | fp->fptr += ofs;\r | |
70702af1 L |
4052 | if (ofs % SS(fs)) {\r |
4053 | nsect = clust2sect(fs, clst); /* Current sector */\r | |
4054 | if (!nsect) ABORT(fs, FR_INT_ERR);\r | |
4055 | nsect += (DWORD)(ofs / SS(fs));\r | |
53668523 L |
4056 | }\r |
4057 | }\r | |
4058 | }\r | |
70702af1 L |
4059 | if (!_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */\r |
4060 | fp->obj.objsize = fp->fptr;\r | |
4061 | fp->flag |= FA_MODIFIED;\r | |
4062 | }\r | |
4063 | if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */\r | |
53668523 L |
4064 | #if !_FS_TINY\r |
4065 | #if !_FS_READONLY\r | |
70702af1 L |
4066 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */\r |
4067 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
4068 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 L |
4069 | }\r |
4070 | #endif\r | |
70702af1 | 4071 | if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */\r |
53668523 | 4072 | #endif\r |
70702af1 | 4073 | fp->sect = nsect;\r |
53668523 | 4074 | }\r |
53668523 L |
4075 | }\r |
4076 | \r | |
70702af1 | 4077 | LEAVE_FF(fs, res);\r |
53668523 L |
4078 | }\r |
4079 | \r | |
4080 | \r | |
4081 | \r | |
4082 | #if _FS_MINIMIZE <= 1\r | |
4083 | /*-----------------------------------------------------------------------*/\r | |
4084 | /* Create a Directory Object */\r | |
4085 | /*-----------------------------------------------------------------------*/\r | |
4086 | \r | |
4087 | FRESULT f_opendir (\r | |
4088 | DIR* dp, /* Pointer to directory object to create */\r | |
4089 | const TCHAR* path /* Pointer to the directory path */\r | |
4090 | )\r | |
4091 | {\r | |
4092 | FRESULT res;\r | |
70702af1 L |
4093 | FATFS *fs;\r |
4094 | _FDID *obj;\r | |
4095 | DEF_NAMBUF\r | |
53668523 L |
4096 | \r |
4097 | \r | |
4098 | if (!dp) return FR_INVALID_OBJECT;\r | |
4099 | \r | |
70702af1 L |
4100 | /* Get logical drive */\r |
4101 | obj = &dp->obj;\r | |
4102 | res = find_volume(&path, &fs, 0);\r | |
53668523 | 4103 | if (res == FR_OK) {\r |
70702af1 L |
4104 | obj->fs = fs;\r |
4105 | INIT_NAMBUF(fs);\r | |
53668523 | 4106 | res = follow_path(dp, path); /* Follow the path to the directory */\r |
53668523 | 4107 | if (res == FR_OK) { /* Follow completed */\r |
70702af1 L |
4108 | if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */\r |
4109 | if (obj->attr & AM_DIR) { /* This object is a sub-directory */\r | |
4110 | #if _FS_EXFAT\r | |
4111 | if (fs->fs_type == FS_EXFAT) {\r | |
4112 | obj->c_scl = obj->sclust; /* Save containing directory inforamation */\r | |
4113 | obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;\r | |
4114 | obj->c_ofs = dp->blk_ofs;\r | |
4115 | obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object location and status */\r | |
4116 | obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r | |
4117 | obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
4118 | } else\r | |
4119 | #endif\r | |
4120 | {\r | |
4121 | obj->sclust = ld_clust(fs, dp->dir); /* Get object location */\r | |
4122 | }\r | |
4123 | } else { /* This object is a file */\r | |
53668523 | 4124 | res = FR_NO_PATH;\r |
70702af1 | 4125 | }\r |
53668523 L |
4126 | }\r |
4127 | if (res == FR_OK) {\r | |
70702af1 | 4128 | obj->id = fs->id;\r |
53668523 | 4129 | res = dir_sdi(dp, 0); /* Rewind directory */\r |
70702af1 | 4130 | #if _FS_LOCK != 0\r |
53668523 | 4131 | if (res == FR_OK) {\r |
70702af1 L |
4132 | if (obj->sclust) {\r |
4133 | obj->lockid = inc_lock(dp, 0); /* Lock the sub directory */\r | |
4134 | if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES;\r | |
53668523 | 4135 | } else {\r |
70702af1 | 4136 | obj->lockid = 0; /* Root directory need not to be locked */\r |
53668523 L |
4137 | }\r |
4138 | }\r | |
4139 | #endif\r | |
4140 | }\r | |
4141 | }\r | |
70702af1 | 4142 | FREE_NAMBUF();\r |
53668523 L |
4143 | if (res == FR_NO_FILE) res = FR_NO_PATH;\r |
4144 | }\r | |
70702af1 | 4145 | if (res != FR_OK) obj->fs = 0; /* Invalidate the directory object if function faild */\r |
53668523 L |
4146 | \r |
4147 | LEAVE_FF(fs, res);\r | |
4148 | }\r | |
4149 | \r | |
4150 | \r | |
4151 | \r | |
4152 | \r | |
4153 | /*-----------------------------------------------------------------------*/\r | |
4154 | /* Close Directory */\r | |
4155 | /*-----------------------------------------------------------------------*/\r | |
4156 | \r | |
4157 | FRESULT f_closedir (\r | |
4158 | DIR *dp /* Pointer to the directory object to be closed */\r | |
4159 | )\r | |
4160 | {\r | |
4161 | FRESULT res;\r | |
70702af1 | 4162 | FATFS *fs;\r |
53668523 L |
4163 | \r |
4164 | \r | |
70702af1 | 4165 | res = validate(&dp->obj, &fs); /* Check validity of the file object */\r |
53668523 | 4166 | if (res == FR_OK) {\r |
70702af1 L |
4167 | #if _FS_LOCK != 0\r |
4168 | if (dp->obj.lockid) { /* Decrement sub-directory open counter */\r | |
4169 | res = dec_lock(dp->obj.lockid);\r | |
4170 | }\r | |
53668523 L |
4171 | if (res == FR_OK)\r |
4172 | #endif\r | |
70702af1 L |
4173 | {\r |
4174 | dp->obj.fs = 0; /* Invalidate directory object */\r | |
4175 | }\r | |
53668523 L |
4176 | #if _FS_REENTRANT\r |
4177 | unlock_fs(fs, FR_OK); /* Unlock volume */\r | |
4178 | #endif\r | |
4179 | }\r | |
4180 | return res;\r | |
4181 | }\r | |
4182 | \r | |
4183 | \r | |
4184 | \r | |
4185 | \r | |
4186 | /*-----------------------------------------------------------------------*/\r | |
4187 | /* Read Directory Entries in Sequence */\r | |
4188 | /*-----------------------------------------------------------------------*/\r | |
4189 | \r | |
4190 | FRESULT f_readdir (\r | |
4191 | DIR* dp, /* Pointer to the open directory object */\r | |
4192 | FILINFO* fno /* Pointer to file information to return */\r | |
4193 | )\r | |
4194 | {\r | |
4195 | FRESULT res;\r | |
70702af1 L |
4196 | FATFS *fs;\r |
4197 | DEF_NAMBUF\r | |
53668523 L |
4198 | \r |
4199 | \r | |
70702af1 | 4200 | res = validate(&dp->obj, &fs); /* Check validity of the directory object */\r |
53668523 L |
4201 | if (res == FR_OK) {\r |
4202 | if (!fno) {\r | |
4203 | res = dir_sdi(dp, 0); /* Rewind the directory object */\r | |
4204 | } else {\r | |
70702af1 | 4205 | INIT_NAMBUF(fs);\r |
53668523 | 4206 | res = dir_read(dp, 0); /* Read an item */\r |
70702af1 | 4207 | if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */\r |
53668523 L |
4208 | if (res == FR_OK) { /* A valid entry is found */\r |
4209 | get_fileinfo(dp, fno); /* Get the object information */\r | |
4210 | res = dir_next(dp, 0); /* Increment index for next */\r | |
70702af1 | 4211 | if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */\r |
53668523 | 4212 | }\r |
70702af1 | 4213 | FREE_NAMBUF();\r |
53668523 L |
4214 | }\r |
4215 | }\r | |
70702af1 L |
4216 | LEAVE_FF(fs, res);\r |
4217 | }\r | |
4218 | \r | |
4219 | \r | |
4220 | \r | |
4221 | #if _USE_FIND\r | |
4222 | /*-----------------------------------------------------------------------*/\r | |
4223 | /* Find Next File */\r | |
4224 | /*-----------------------------------------------------------------------*/\r | |
4225 | \r | |
4226 | FRESULT f_findnext (\r | |
4227 | DIR* dp, /* Pointer to the open directory object */\r | |
4228 | FILINFO* fno /* Pointer to the file information structure */\r | |
4229 | )\r | |
4230 | {\r | |
4231 | FRESULT res;\r | |
4232 | \r | |
4233 | \r | |
4234 | for (;;) {\r | |
4235 | res = f_readdir(dp, fno); /* Get a directory item */\r | |
4236 | if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */\r | |
4237 | if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */\r | |
4238 | #if _USE_LFN != 0 && _USE_FIND == 2\r | |
4239 | if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */\r | |
4240 | #endif\r | |
4241 | }\r | |
4242 | return res;\r | |
4243 | }\r | |
4244 | \r | |
4245 | \r | |
4246 | \r | |
4247 | /*-----------------------------------------------------------------------*/\r | |
4248 | /* Find First File */\r | |
4249 | /*-----------------------------------------------------------------------*/\r | |
53668523 | 4250 | \r |
70702af1 L |
4251 | FRESULT f_findfirst (\r |
4252 | DIR* dp, /* Pointer to the blank directory object */\r | |
4253 | FILINFO* fno, /* Pointer to the file information structure */\r | |
4254 | const TCHAR* path, /* Pointer to the directory to open */\r | |
4255 | const TCHAR* pattern /* Pointer to the matching pattern */\r | |
4256 | )\r | |
4257 | {\r | |
4258 | FRESULT res;\r | |
4259 | \r | |
4260 | \r | |
4261 | dp->pat = pattern; /* Save pointer to pattern string */\r | |
4262 | res = f_opendir(dp, path); /* Open the target directory */\r | |
4263 | if (res == FR_OK) {\r | |
4264 | res = f_findnext(dp, fno); /* Find the first item */\r | |
4265 | }\r | |
4266 | return res;\r | |
53668523 L |
4267 | }\r |
4268 | \r | |
70702af1 L |
4269 | #endif /* _USE_FIND */\r |
4270 | \r | |
53668523 L |
4271 | \r |
4272 | \r | |
4273 | #if _FS_MINIMIZE == 0\r | |
4274 | /*-----------------------------------------------------------------------*/\r | |
4275 | /* Get File Status */\r | |
4276 | /*-----------------------------------------------------------------------*/\r | |
4277 | \r | |
4278 | FRESULT f_stat (\r | |
4279 | const TCHAR* path, /* Pointer to the file path */\r | |
4280 | FILINFO* fno /* Pointer to file information to return */\r | |
4281 | )\r | |
4282 | {\r | |
4283 | FRESULT res;\r | |
4284 | DIR dj;\r | |
70702af1 | 4285 | DEF_NAMBUF\r |
53668523 L |
4286 | \r |
4287 | \r | |
70702af1 L |
4288 | /* Get logical drive */\r |
4289 | res = find_volume(&path, &dj.obj.fs, 0);\r | |
53668523 | 4290 | if (res == FR_OK) {\r |
70702af1 | 4291 | INIT_NAMBUF(dj.obj.fs);\r |
53668523 L |
4292 | res = follow_path(&dj, path); /* Follow the file path */\r |
4293 | if (res == FR_OK) { /* Follow completed */\r | |
70702af1 | 4294 | if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */\r |
53668523 | 4295 | res = FR_INVALID_NAME;\r |
70702af1 L |
4296 | } else { /* Found an object */\r |
4297 | if (fno) get_fileinfo(&dj, fno);\r | |
53668523 L |
4298 | }\r |
4299 | }\r | |
70702af1 | 4300 | FREE_NAMBUF();\r |
53668523 L |
4301 | }\r |
4302 | \r | |
70702af1 | 4303 | LEAVE_FF(dj.obj.fs, res);\r |
53668523 L |
4304 | }\r |
4305 | \r | |
4306 | \r | |
4307 | \r | |
4308 | #if !_FS_READONLY\r | |
4309 | /*-----------------------------------------------------------------------*/\r | |
4310 | /* Get Number of Free Clusters */\r | |
4311 | /*-----------------------------------------------------------------------*/\r | |
4312 | \r | |
4313 | FRESULT f_getfree (\r | |
4314 | const TCHAR* path, /* Path name of the logical drive number */\r | |
4315 | DWORD* nclst, /* Pointer to a variable to return number of free clusters */\r | |
4316 | FATFS** fatfs /* Pointer to return pointer to corresponding file system object */\r | |
4317 | )\r | |
4318 | {\r | |
4319 | FRESULT res;\r | |
4320 | FATFS *fs;\r | |
70702af1 | 4321 | DWORD nfree, clst, sect, stat;\r |
53668523 | 4322 | UINT i;\r |
70702af1 L |
4323 | BYTE *p;\r |
4324 | _FDID obj;\r | |
53668523 L |
4325 | \r |
4326 | \r | |
70702af1 L |
4327 | /* Get logical drive */\r |
4328 | res = find_volume(&path, &fs, 0);\r | |
53668523 | 4329 | if (res == FR_OK) {\r |
70702af1 L |
4330 | *fatfs = fs; /* Return ptr to the fs object */\r |
4331 | /* If free_clst is valid, return it without full cluster scan */\r | |
4332 | if (fs->free_clst <= fs->n_fatent - 2) {\r | |
4333 | *nclst = fs->free_clst;\r | |
53668523 L |
4334 | } else {\r |
4335 | /* Get number of free clusters */\r | |
70702af1 L |
4336 | nfree = 0;\r |
4337 | if (fs->fs_type == FS_FAT12) { /* FAT12: Sector unalighed FAT entries */\r | |
4338 | clst = 2; obj.fs = fs;\r | |
53668523 | 4339 | do {\r |
70702af1 | 4340 | stat = get_fat(&obj, clst);\r |
53668523 L |
4341 | if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }\r |
4342 | if (stat == 1) { res = FR_INT_ERR; break; }\r | |
70702af1 | 4343 | if (stat == 0) nfree++;\r |
53668523 L |
4344 | } while (++clst < fs->n_fatent);\r |
4345 | } else {\r | |
70702af1 L |
4346 | #if _FS_EXFAT\r |
4347 | if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan bitmap table */\r | |
4348 | BYTE bm;\r | |
4349 | UINT b;\r | |
4350 | \r | |
4351 | clst = fs->n_fatent - 2;\r | |
4352 | sect = fs->database;\r | |
4353 | i = 0;\r | |
4354 | do {\r | |
4355 | if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break;\r | |
4356 | for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {\r | |
4357 | if (!(bm & 1)) nfree++;\r | |
4358 | bm >>= 1;\r | |
4359 | }\r | |
4360 | i = (i + 1) % SS(fs);\r | |
4361 | } while (clst);\r | |
4362 | } else\r | |
4363 | #endif\r | |
4364 | { /* FAT16/32: Sector alighed FAT entries */\r | |
4365 | clst = fs->n_fatent; sect = fs->fatbase;\r | |
4366 | i = 0; p = 0;\r | |
4367 | do {\r | |
4368 | if (i == 0) {\r | |
4369 | res = move_window(fs, sect++);\r | |
4370 | if (res != FR_OK) break;\r | |
4371 | p = fs->win;\r | |
4372 | i = SS(fs);\r | |
4373 | }\r | |
4374 | if (fs->fs_type == FS_FAT16) {\r | |
4375 | if (ld_word(p) == 0) nfree++;\r | |
4376 | p += 2; i -= 2;\r | |
4377 | } else {\r | |
4378 | if ((ld_dword(p) & 0x0FFFFFFF) == 0) nfree++;\r | |
4379 | p += 4; i -= 4;\r | |
4380 | }\r | |
4381 | } while (--clst);\r | |
4382 | }\r | |
53668523 | 4383 | }\r |
70702af1 L |
4384 | *nclst = nfree; /* Return the free clusters */\r |
4385 | fs->free_clst = nfree; /* Now free_clst is valid */\r | |
4386 | fs->fsi_flag |= 1; /* FSInfo is to be updated */\r | |
53668523 L |
4387 | }\r |
4388 | }\r | |
70702af1 | 4389 | \r |
53668523 L |
4390 | LEAVE_FF(fs, res);\r |
4391 | }\r | |
4392 | \r | |
4393 | \r | |
4394 | \r | |
4395 | \r | |
4396 | /*-----------------------------------------------------------------------*/\r | |
4397 | /* Truncate File */\r | |
4398 | /*-----------------------------------------------------------------------*/\r | |
4399 | \r | |
4400 | FRESULT f_truncate (\r | |
4401 | FIL* fp /* Pointer to the file object */\r | |
4402 | )\r | |
4403 | {\r | |
4404 | FRESULT res;\r | |
70702af1 | 4405 | FATFS *fs;\r |
53668523 L |
4406 | DWORD ncl;\r |
4407 | \r | |
4408 | \r | |
70702af1 L |
4409 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
4410 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r | |
4411 | if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r | |
4412 | \r | |
4413 | if (fp->obj.objsize > fp->fptr) {\r | |
4414 | if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */\r | |
4415 | res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r | |
4416 | fp->obj.sclust = 0;\r | |
4417 | } else { /* When truncate a part of the file, remove remaining clusters */\r | |
4418 | ncl = get_fat(&fp->obj, fp->clust);\r | |
4419 | res = FR_OK;\r | |
4420 | if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;\r | |
4421 | if (ncl == 1) res = FR_INT_ERR;\r | |
4422 | if (res == FR_OK && ncl < fs->n_fatent) {\r | |
4423 | res = remove_chain(&fp->obj, ncl, fp->clust);\r | |
53668523 | 4424 | }\r |
70702af1 L |
4425 | }\r |
4426 | fp->obj.objsize = fp->fptr; /* Set file size to current R/W point */\r | |
4427 | fp->flag |= FA_MODIFIED;\r | |
53668523 | 4428 | #if !_FS_TINY\r |
70702af1 L |
4429 | if (res == FR_OK && (fp->flag & FA_DIRTY)) {\r |
4430 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r | |
4431 | res = FR_DISK_ERR;\r | |
4432 | } else {\r | |
4433 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
53668523 | 4434 | }\r |
53668523 | 4435 | }\r |
70702af1 L |
4436 | #endif\r |
4437 | if (res != FR_OK) ABORT(fs, res);\r | |
53668523 L |
4438 | }\r |
4439 | \r | |
70702af1 | 4440 | LEAVE_FF(fs, res);\r |
53668523 L |
4441 | }\r |
4442 | \r | |
4443 | \r | |
4444 | \r | |
4445 | \r | |
4446 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 4447 | /* Delete a File/Directory */\r |
53668523 L |
4448 | /*-----------------------------------------------------------------------*/\r |
4449 | \r | |
4450 | FRESULT f_unlink (\r | |
4451 | const TCHAR* path /* Pointer to the file or directory path */\r | |
4452 | )\r | |
4453 | {\r | |
4454 | FRESULT res;\r | |
4455 | DIR dj, sdj;\r | |
7b78a5a2 | 4456 | DWORD dclst = 0;\r |
70702af1 L |
4457 | FATFS *fs;\r |
4458 | #if _FS_EXFAT\r | |
4459 | _FDID obj;\r | |
4460 | #endif\r | |
4461 | DEF_NAMBUF\r | |
53668523 L |
4462 | \r |
4463 | \r | |
70702af1 L |
4464 | /* Get logical drive */\r |
4465 | res = find_volume(&path, &fs, FA_WRITE);\r | |
4466 | dj.obj.fs = fs;\r | |
53668523 | 4467 | if (res == FR_OK) {\r |
70702af1 | 4468 | INIT_NAMBUF(fs);\r |
53668523 | 4469 | res = follow_path(&dj, path); /* Follow the file path */\r |
70702af1 | 4470 | if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {\r |
53668523 | 4471 | res = FR_INVALID_NAME; /* Cannot remove dot entry */\r |
70702af1 L |
4472 | }\r |
4473 | #if _FS_LOCK != 0\r | |
4474 | if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */\r | |
53668523 L |
4475 | #endif\r |
4476 | if (res == FR_OK) { /* The object is accessible */\r | |
70702af1 | 4477 | if (dj.fn[NSFLAG] & NS_NONAME) {\r |
7b78a5a2 | 4478 | res = FR_INVALID_NAME; /* Cannot remove the origin directory */\r |
53668523 | 4479 | } else {\r |
70702af1 | 4480 | if (dj.obj.attr & AM_RDO) {\r |
53668523 | 4481 | res = FR_DENIED; /* Cannot remove R/O object */\r |
70702af1 | 4482 | }\r |
53668523 | 4483 | }\r |
70702af1 L |
4484 | if (res == FR_OK) {\r |
4485 | #if _FS_EXFAT\r | |
4486 | obj.fs = fs;\r | |
4487 | if (fs->fs_type == FS_EXFAT) {\r | |
4488 | obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus);\r | |
4489 | obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r | |
4490 | obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r | |
4491 | } else\r | |
4492 | #endif\r | |
4493 | {\r | |
4494 | dclst = ld_clust(fs, dj.dir);\r | |
4495 | }\r | |
4496 | if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory ? */\r | |
4497 | #if _FS_RPATH != 0\r | |
4498 | if (dclst == fs->cdir) { /* Is it the current directory? */\r | |
4499 | res = FR_DENIED;\r | |
4500 | } else\r | |
4501 | #endif\r | |
4502 | {\r | |
4503 | sdj.obj.fs = fs; /* Open the sub-directory */\r | |
4504 | sdj.obj.sclust = dclst;\r | |
4505 | #if _FS_EXFAT\r | |
4506 | if (fs->fs_type == FS_EXFAT) {\r | |
4507 | sdj.obj.objsize = obj.objsize;\r | |
4508 | sdj.obj.stat = obj.stat;\r | |
4509 | }\r | |
53668523 | 4510 | #endif\r |
70702af1 L |
4511 | res = dir_sdi(&sdj, 0);\r |
4512 | if (res == FR_OK) {\r | |
4513 | res = dir_read(&sdj, 0); /* Read an item */\r | |
4514 | if (res == FR_OK) res = FR_DENIED; /* Not empty? */\r | |
4515 | if (res == FR_NO_FILE) res = FR_OK; /* Empty? */\r | |
4516 | }\r | |
53668523 L |
4517 | }\r |
4518 | }\r | |
4519 | }\r | |
4520 | if (res == FR_OK) {\r | |
70702af1 L |
4521 | res = dir_remove(&dj); /* Remove the directory entry */\r |
4522 | if (res == FR_OK && dclst) { /* Remove the cluster chain if exist */\r | |
4523 | #if _FS_EXFAT\r | |
4524 | res = remove_chain(&obj, dclst, 0);\r | |
4525 | #else\r | |
4526 | res = remove_chain(&dj.obj, dclst, 0);\r | |
4527 | #endif\r | |
4528 | }\r | |
4529 | if (res == FR_OK) res = sync_fs(fs);\r | |
53668523 L |
4530 | }\r |
4531 | }\r | |
70702af1 | 4532 | FREE_NAMBUF();\r |
53668523 L |
4533 | }\r |
4534 | \r | |
70702af1 | 4535 | LEAVE_FF(fs, res);\r |
53668523 L |
4536 | }\r |
4537 | \r | |
4538 | \r | |
4539 | \r | |
4540 | \r | |
4541 | /*-----------------------------------------------------------------------*/\r | |
4542 | /* Create a Directory */\r | |
4543 | /*-----------------------------------------------------------------------*/\r | |
4544 | \r | |
4545 | FRESULT f_mkdir (\r | |
4546 | const TCHAR* path /* Pointer to the directory path */\r | |
4547 | )\r | |
4548 | {\r | |
4549 | FRESULT res;\r | |
4550 | DIR dj;\r | |
70702af1 L |
4551 | FATFS *fs;\r |
4552 | BYTE *dir;\r | |
4553 | UINT n;\r | |
4554 | DWORD dsc, dcl, pcl, tm;\r | |
4555 | DEF_NAMBUF\r | |
53668523 L |
4556 | \r |
4557 | \r | |
70702af1 L |
4558 | /* Get logical drive */\r |
4559 | res = find_volume(&path, &fs, FA_WRITE);\r | |
4560 | dj.obj.fs = fs;\r | |
53668523 | 4561 | if (res == FR_OK) {\r |
70702af1 | 4562 | INIT_NAMBUF(fs);\r |
53668523 L |
4563 | res = follow_path(&dj, path); /* Follow the file path */\r |
4564 | if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */\r | |
70702af1 | 4565 | if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) {\r |
53668523 | 4566 | res = FR_INVALID_NAME;\r |
70702af1 | 4567 | }\r |
53668523 | 4568 | if (res == FR_NO_FILE) { /* Can create a new directory */\r |
70702af1 L |
4569 | dcl = create_chain(&dj.obj, 0); /* Allocate a cluster for the new directory table */\r |
4570 | dj.obj.objsize = (DWORD)fs->csize * SS(fs);\r | |
53668523 L |
4571 | res = FR_OK;\r |
4572 | if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */\r | |
4573 | if (dcl == 1) res = FR_INT_ERR;\r | |
4574 | if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;\r | |
70702af1 L |
4575 | if (res == FR_OK) res = sync_window(fs); /* Flush FAT */\r |
4576 | tm = GET_FATTIME();\r | |
53668523 | 4577 | if (res == FR_OK) { /* Initialize the new directory table */\r |
70702af1 L |
4578 | dsc = clust2sect(fs, dcl);\r |
4579 | dir = fs->win;\r | |
4580 | mem_set(dir, 0, SS(fs));\r | |
4581 | if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r | |
4582 | mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */\r | |
4583 | dir[DIR_Name] = '.';\r | |
4584 | dir[DIR_Attr] = AM_DIR;\r | |
4585 | st_dword(dir + DIR_ModTime, tm);\r | |
4586 | st_clust(fs, dir, dcl);\r | |
4587 | mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */\r | |
4588 | dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;\r | |
4589 | if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0;\r | |
4590 | st_clust(fs, dir + SZDIRE, pcl);\r | |
4591 | }\r | |
4592 | for (n = fs->csize; n; n--) { /* Write dot entries and clear following sectors */\r | |
4593 | fs->winsect = dsc++;\r | |
4594 | fs->wflag = 1;\r | |
4595 | res = sync_window(fs);\r | |
53668523 | 4596 | if (res != FR_OK) break;\r |
70702af1 | 4597 | mem_set(dir, 0, SS(fs));\r |
53668523 L |
4598 | }\r |
4599 | }\r | |
4600 | if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */\r | |
70702af1 L |
4601 | if (res == FR_OK) {\r |
4602 | #if _FS_EXFAT\r | |
4603 | if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */\r | |
4604 | st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */\r | |
4605 | st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */\r | |
4606 | st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize); /* File size needs to be valid */\r | |
4607 | st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize);\r | |
4608 | fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag (contiguous) */\r | |
4609 | fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */\r | |
4610 | res = store_xdir(&dj);\r | |
4611 | } else\r | |
4612 | #endif\r | |
4613 | {\r | |
4614 | dir = dj.dir;\r | |
4615 | st_dword(dir + DIR_ModTime, tm); /* Created time */\r | |
4616 | st_clust(fs, dir, dcl); /* Table start cluster */\r | |
4617 | dir[DIR_Attr] = AM_DIR; /* Attribute */\r | |
4618 | fs->wflag = 1;\r | |
4619 | }\r | |
4620 | if (res == FR_OK) res = sync_fs(fs);\r | |
53668523 | 4621 | } else {\r |
70702af1 | 4622 | remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */\r |
53668523 L |
4623 | }\r |
4624 | }\r | |
70702af1 | 4625 | FREE_NAMBUF();\r |
53668523 L |
4626 | }\r |
4627 | \r | |
70702af1 | 4628 | LEAVE_FF(fs, res);\r |
53668523 L |
4629 | }\r |
4630 | \r | |
4631 | \r | |
4632 | \r | |
4633 | \r | |
4634 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 4635 | /* Rename a File/Directory */\r |
53668523 L |
4636 | /*-----------------------------------------------------------------------*/\r |
4637 | \r | |
70702af1 L |
4638 | FRESULT f_rename (\r |
4639 | const TCHAR* path_old, /* Pointer to the object name to be renamed */\r | |
4640 | const TCHAR* path_new /* Pointer to the new name */\r | |
53668523 L |
4641 | )\r |
4642 | {\r | |
4643 | FRESULT res;\r | |
70702af1 L |
4644 | DIR djo, djn;\r |
4645 | FATFS *fs;\r | |
4646 | BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir;\r | |
4647 | DWORD dw;\r | |
4648 | DEF_NAMBUF\r | |
53668523 L |
4649 | \r |
4650 | \r | |
70702af1 L |
4651 | get_ldnumber(&path_new); /* Ignore drive number of new name */\r |
4652 | res = find_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */\r | |
53668523 | 4653 | if (res == FR_OK) {\r |
70702af1 L |
4654 | djo.obj.fs = fs;\r |
4655 | INIT_NAMBUF(fs);\r | |
4656 | res = follow_path(&djo, path_old); /* Check old object */\r | |
4657 | if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */\r | |
4658 | #if _FS_LOCK != 0\r | |
4659 | if (res == FR_OK) res = chk_lock(&djo, 2);\r | |
4660 | #endif\r | |
4661 | if (res == FR_OK) { /* Object to be renamed is found */\r | |
4662 | #if _FS_EXFAT\r | |
4663 | if (fs->fs_type == FS_EXFAT) { /* At exFAT */\r | |
4664 | BYTE nf, nn;\r | |
4665 | WORD nh;\r | |
4666 | \r | |
4667 | mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */\r | |
4668 | mem_cpy(&djn, &djo, sizeof djo);\r | |
4669 | res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */\r | |
4670 | if (res == FR_OK) { /* Is new name already in use by any other object? */\r | |
4671 | res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;\r | |
4672 | }\r | |
4673 | if (res == FR_NO_FILE) { /* It is a valid path and no name collision */\r | |
4674 | res = dir_register(&djn); /* Register the new entry */\r | |
4675 | if (res == FR_OK) {\r | |
4676 | nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];\r | |
4677 | nh = ld_word(fs->dirbuf + XDIR_NameHash);\r | |
4678 | mem_cpy(fs->dirbuf, buf, SZDIRE * 2);\r | |
4679 | fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;\r | |
4680 | st_word(fs->dirbuf + XDIR_NameHash, nh);\r | |
4681 | /* Start of critical section where any interruption can cause a cross-link */\r | |
4682 | res = store_xdir(&djn);\r | |
4683 | }\r | |
4684 | }\r | |
4685 | } else\r | |
4686 | #endif\r | |
4687 | { /* At FAT12/FAT16/FAT32 */\r | |
4688 | mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about the object except name */\r | |
4689 | mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */\r | |
4690 | res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */\r | |
4691 | if (res == FR_OK) { /* Is new name already in use by any other object? */\r | |
4692 | res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;\r | |
4693 | }\r | |
4694 | if (res == FR_NO_FILE) { /* It is a valid path and no name collision */\r | |
4695 | res = dir_register(&djn); /* Register the new entry */\r | |
4696 | if (res == FR_OK) {\r | |
4697 | dir = djn.dir; /* Copy information about object except name */\r | |
4698 | mem_cpy(dir + 13, buf + 2, 19);\r | |
4699 | dir[DIR_Attr] = buf[0] | AM_ARC;\r | |
4700 | fs->wflag = 1;\r | |
4701 | if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */\r | |
4702 | dw = clust2sect(fs, ld_clust(fs, dir));\r | |
4703 | if (!dw) {\r | |
4704 | res = FR_INT_ERR;\r | |
4705 | } else {\r | |
4706 | /* Start of critical section where any interruption can cause a cross-link */\r | |
4707 | res = move_window(fs, dw);\r | |
4708 | dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */\r | |
4709 | if (res == FR_OK && dir[1] == '.') {\r | |
4710 | st_clust(fs, dir, djn.obj.sclust);\r | |
4711 | fs->wflag = 1;\r | |
4712 | }\r | |
4713 | }\r | |
4714 | }\r | |
4715 | }\r | |
4716 | }\r | |
4717 | }\r | |
4718 | if (res == FR_OK) {\r | |
4719 | res = dir_remove(&djo); /* Remove old entry */\r | |
4720 | if (res == FR_OK) {\r | |
4721 | res = sync_fs(fs);\r | |
4722 | }\r | |
53668523 | 4723 | }\r |
70702af1 | 4724 | /* End of critical section */\r |
53668523 | 4725 | }\r |
70702af1 | 4726 | FREE_NAMBUF();\r |
53668523 L |
4727 | }\r |
4728 | \r | |
70702af1 | 4729 | LEAVE_FF(fs, res);\r |
53668523 L |
4730 | }\r |
4731 | \r | |
70702af1 L |
4732 | #endif /* !_FS_READONLY */\r |
4733 | #endif /* _FS_MINIMIZE == 0 */\r | |
4734 | #endif /* _FS_MINIMIZE <= 1 */\r | |
4735 | #endif /* _FS_MINIMIZE <= 2 */\r | |
53668523 L |
4736 | \r |
4737 | \r | |
4738 | \r | |
70702af1 | 4739 | #if _USE_CHMOD && !_FS_READONLY\r |
53668523 | 4740 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 4741 | /* Change Attribute */\r |
53668523 L |
4742 | /*-----------------------------------------------------------------------*/\r |
4743 | \r | |
70702af1 L |
4744 | FRESULT f_chmod (\r |
4745 | const TCHAR* path, /* Pointer to the file path */\r | |
4746 | BYTE attr, /* Attribute bits */\r | |
4747 | BYTE mask /* Attribute mask to change */\r | |
53668523 L |
4748 | )\r |
4749 | {\r | |
4750 | FRESULT res;\r | |
70702af1 L |
4751 | DIR dj;\r |
4752 | FATFS *fs;\r | |
4753 | DEF_NAMBUF\r | |
53668523 L |
4754 | \r |
4755 | \r | |
70702af1 L |
4756 | res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */\r |
4757 | dj.obj.fs = fs;\r | |
53668523 | 4758 | if (res == FR_OK) {\r |
70702af1 L |
4759 | INIT_NAMBUF(fs);\r |
4760 | res = follow_path(&dj, path); /* Follow the file path */\r | |
4761 | if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */\r | |
4762 | if (res == FR_OK) {\r | |
4763 | mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */\r | |
4764 | #if _FS_EXFAT\r | |
4765 | if (fs->fs_type == FS_EXFAT) {\r | |
4766 | fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */\r | |
4767 | res = store_xdir(&dj);\r | |
4768 | } else\r | |
53668523 | 4769 | #endif\r |
70702af1 L |
4770 | {\r |
4771 | dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */\r | |
4772 | fs->wflag = 1;\r | |
53668523 | 4773 | }\r |
70702af1 | 4774 | if (res == FR_OK) res = sync_fs(fs);\r |
53668523 | 4775 | }\r |
70702af1 | 4776 | FREE_NAMBUF();\r |
53668523 L |
4777 | }\r |
4778 | \r | |
70702af1 | 4779 | LEAVE_FF(fs, res);\r |
53668523 L |
4780 | }\r |
4781 | \r | |
7b78a5a2 L |
4782 | \r |
4783 | \r | |
4784 | \r | |
4785 | /*-----------------------------------------------------------------------*/\r | |
4786 | /* Change Timestamp */\r | |
4787 | /*-----------------------------------------------------------------------*/\r | |
4788 | \r | |
4789 | FRESULT f_utime (\r | |
4790 | const TCHAR* path, /* Pointer to the file/directory name */\r | |
4791 | const FILINFO* fno /* Pointer to the time stamp to be set */\r | |
4792 | )\r | |
4793 | {\r | |
4794 | FRESULT res;\r | |
4795 | DIR dj;\r | |
70702af1 L |
4796 | FATFS *fs;\r |
4797 | DEF_NAMBUF\r | |
7b78a5a2 L |
4798 | \r |
4799 | \r | |
70702af1 L |
4800 | res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */\r |
4801 | dj.obj.fs = fs;\r | |
7b78a5a2 | 4802 | if (res == FR_OK) {\r |
70702af1 | 4803 | INIT_NAMBUF(fs);\r |
7b78a5a2 | 4804 | res = follow_path(&dj, path); /* Follow the file path */\r |
70702af1 | 4805 | if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */\r |
7b78a5a2 | 4806 | if (res == FR_OK) {\r |
70702af1 L |
4807 | #if _FS_EXFAT\r |
4808 | if (fs->fs_type == FS_EXFAT) {\r | |
4809 | st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);\r | |
4810 | res = store_xdir(&dj);\r | |
4811 | } else\r | |
4812 | #endif\r | |
4813 | {\r | |
4814 | st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);\r | |
4815 | fs->wflag = 1;\r | |
7b78a5a2 | 4816 | }\r |
70702af1 | 4817 | if (res == FR_OK) res = sync_fs(fs);\r |
7b78a5a2 | 4818 | }\r |
70702af1 | 4819 | FREE_NAMBUF();\r |
7b78a5a2 L |
4820 | }\r |
4821 | \r | |
70702af1 | 4822 | LEAVE_FF(fs, res);\r |
7b78a5a2 L |
4823 | }\r |
4824 | \r | |
70702af1 | 4825 | #endif /* _USE_CHMOD && !_FS_READONLY */\r |
53668523 L |
4826 | \r |
4827 | \r | |
4828 | \r | |
4829 | #if _USE_LABEL\r | |
4830 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 4831 | /* Get Volume Label */\r |
53668523 L |
4832 | /*-----------------------------------------------------------------------*/\r |
4833 | \r | |
4834 | FRESULT f_getlabel (\r | |
4835 | const TCHAR* path, /* Path name of the logical drive number */\r | |
4836 | TCHAR* label, /* Pointer to a buffer to return the volume label */\r | |
4837 | DWORD* vsn /* Pointer to a variable to return the volume serial number */\r | |
4838 | )\r | |
4839 | {\r | |
4840 | FRESULT res;\r | |
4841 | DIR dj;\r | |
70702af1 L |
4842 | FATFS *fs;\r |
4843 | UINT si, di;\r | |
4844 | #if _LFN_UNICODE || _FS_EXFAT\r | |
4845 | WCHAR w;\r | |
4846 | #endif\r | |
53668523 | 4847 | \r |
70702af1 L |
4848 | /* Get logical drive */\r |
4849 | res = find_volume(&path, &fs, 0);\r | |
53668523 L |
4850 | \r |
4851 | /* Get volume label */\r | |
4852 | if (res == FR_OK && label) {\r | |
70702af1 | 4853 | dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */\r |
53668523 L |
4854 | res = dir_sdi(&dj, 0);\r |
4855 | if (res == FR_OK) {\r | |
70702af1 L |
4856 | res = dir_read(&dj, 1); /* Find a volume label entry */\r |
4857 | if (res == FR_OK) {\r | |
4858 | #if _FS_EXFAT\r | |
4859 | if (fs->fs_type == FS_EXFAT) {\r | |
4860 | for (si = di = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */\r | |
4861 | w = ld_word(dj.dir + XDIR_Label + si * 2);\r | |
4862 | #if _LFN_UNICODE\r | |
4863 | label[di++] = w;\r | |
53668523 | 4864 | #else\r |
70702af1 L |
4865 | w = ff_convert(w, 0); /* Unicode -> OEM */\r |
4866 | if (w == 0) w = '?'; /* Replace wrong character */\r | |
4867 | if (_DF1S && w >= 0x100) label[di++] = (char)(w >> 8);\r | |
4868 | label[di++] = (char)w;\r | |
53668523 | 4869 | #endif\r |
70702af1 L |
4870 | }\r |
4871 | label[di] = 0;\r | |
4872 | } else\r | |
4873 | #endif\r | |
4874 | {\r | |
4875 | si = di = 0; /* Extract volume label from AM_VOL entry with code comversion */\r | |
4876 | do {\r | |
4877 | #if _LFN_UNICODE\r | |
4878 | w = (si < 11) ? dj.dir[si++] : ' ';\r | |
4879 | if (IsDBCS1(w) && si < 11 && IsDBCS2(dj.dir[si])) {\r | |
4880 | w = w << 8 | dj.dir[si++];\r | |
4881 | }\r | |
4882 | label[di++] = ff_convert(w, 1); /* OEM -> Unicode */\r | |
4883 | #else\r | |
4884 | label[di++] = dj.dir[si++];\r | |
4885 | #endif\r | |
4886 | } while (di < 11);\r | |
4887 | do { /* Truncate trailing spaces */\r | |
4888 | label[di] = 0;\r | |
4889 | if (di == 0) break;\r | |
4890 | } while (label[--di] == ' ');\r | |
4891 | }\r | |
53668523 L |
4892 | }\r |
4893 | }\r | |
70702af1 L |
4894 | if (res == FR_NO_FILE) { /* No label entry and return nul string */\r |
4895 | label[0] = 0;\r | |
4896 | res = FR_OK;\r | |
4897 | }\r | |
53668523 L |
4898 | }\r |
4899 | \r | |
4900 | /* Get volume serial number */\r | |
4901 | if (res == FR_OK && vsn) {\r | |
70702af1 | 4902 | res = move_window(fs, fs->volbase);\r |
53668523 | 4903 | if (res == FR_OK) {\r |
70702af1 L |
4904 | switch (fs->fs_type) {\r |
4905 | case FS_EXFAT: di = BPB_VolIDEx; break;\r | |
4906 | case FS_FAT32: di = BS_VolID32; break;\r | |
4907 | default: di = BS_VolID;\r | |
4908 | }\r | |
4909 | *vsn = ld_dword(fs->win + di);\r | |
53668523 L |
4910 | }\r |
4911 | }\r | |
4912 | \r | |
70702af1 | 4913 | LEAVE_FF(fs, res);\r |
53668523 L |
4914 | }\r |
4915 | \r | |
4916 | \r | |
4917 | \r | |
4918 | #if !_FS_READONLY\r | |
4919 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 4920 | /* Set Volume Label */\r |
53668523 L |
4921 | /*-----------------------------------------------------------------------*/\r |
4922 | \r | |
4923 | FRESULT f_setlabel (\r | |
4924 | const TCHAR* label /* Pointer to the volume label to set */\r | |
4925 | )\r | |
4926 | {\r | |
4927 | FRESULT res;\r | |
4928 | DIR dj;\r | |
70702af1 L |
4929 | FATFS *fs;\r |
4930 | BYTE dirvn[22];\r | |
4931 | UINT i, j, slen;\r | |
53668523 | 4932 | WCHAR w;\r |
70702af1 | 4933 | static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F";\r |
53668523 L |
4934 | \r |
4935 | \r | |
70702af1 L |
4936 | /* Get logical drive */\r |
4937 | res = find_volume(&label, &fs, FA_WRITE);\r | |
4938 | if (res != FR_OK) LEAVE_FF(fs, res);\r | |
4939 | dj.obj.fs = fs;\r | |
4940 | \r | |
4941 | /* Get length of given volume label */\r | |
4942 | for (slen = 0; (UINT)label[slen] >= ' '; slen++) ; /* Get name length */\r | |
4943 | \r | |
4944 | #if _FS_EXFAT\r | |
4945 | if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */\r | |
4946 | for (i = j = 0; i < slen; ) { /* Create volume label in directory form */\r | |
4947 | w = label[i++];\r | |
4948 | #if !_LFN_UNICODE\r | |
4949 | if (IsDBCS1(w)) {\r | |
4950 | w = (i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;\r | |
4951 | }\r | |
4952 | w = ff_convert(w, 1);\r | |
4953 | #endif\r | |
4954 | if (w == 0 || chk_chr(badchr, w) || j == 22) { /* Check validity check validity of the volume label */\r | |
4955 | LEAVE_FF(fs, FR_INVALID_NAME);\r | |
4956 | }\r | |
4957 | st_word(dirvn + j, w); j += 2;\r | |
4958 | }\r | |
4959 | slen = j;\r | |
4960 | } else\r | |
4961 | #endif\r | |
4962 | { /* On the FAT12/16/32 volume */\r | |
4963 | for ( ; slen && label[slen - 1] == ' '; slen--) ; /* Remove trailing spaces */\r | |
4964 | if (slen) { /* Is there a volume label to be set? */\r | |
4965 | dirvn[0] = 0; i = j = 0; /* Create volume label in directory form */\r | |
4966 | do {\r | |
4967 | #if _LFN_UNICODE\r | |
4968 | w = ff_convert(ff_wtoupper(label[i++]), 0);\r | |
53668523 | 4969 | #else\r |
70702af1 L |
4970 | w = (BYTE)label[i++];\r |
4971 | if (IsDBCS1(w)) {\r | |
4972 | w = (j < 10 && i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;\r | |
4973 | }\r | |
4974 | #if _USE_LFN != 0\r | |
4975 | w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);\r | |
53668523 | 4976 | #else\r |
70702af1 | 4977 | if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */\r |
53668523 | 4978 | #ifdef _EXCVT\r |
70702af1 | 4979 | if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */\r |
53668523 | 4980 | #else\r |
70702af1 | 4981 | if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */\r |
53668523 L |
4982 | #endif\r |
4983 | #endif\r | |
4984 | #endif\r | |
70702af1 L |
4985 | if (w == 0 || chk_chr(badchr, w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */\r |
4986 | LEAVE_FF(fs, FR_INVALID_NAME);\r | |
4987 | }\r | |
4988 | if (w >= 0x100) dirvn[j++] = (BYTE)(w >> 8);\r | |
4989 | dirvn[j++] = (BYTE)w;\r | |
4990 | } while (i < slen);\r | |
4991 | while (j < 11) dirvn[j++] = ' '; /* Fill remaining name field */\r | |
4992 | if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */\r | |
4993 | }\r | |
53668523 L |
4994 | }\r |
4995 | \r | |
4996 | /* Set volume label */\r | |
70702af1 | 4997 | dj.obj.sclust = 0; /* Open root directory */\r |
53668523 L |
4998 | res = dir_sdi(&dj, 0);\r |
4999 | if (res == FR_OK) {\r | |
70702af1 L |
5000 | res = dir_read(&dj, 1); /* Get volume label entry */\r |
5001 | if (res == FR_OK) {\r | |
5002 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {\r | |
5003 | dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2); /* Change the volume label */\r | |
5004 | mem_cpy(dj.dir + XDIR_Label, dirvn, slen);\r | |
53668523 | 5005 | } else {\r |
70702af1 L |
5006 | if (slen) {\r |
5007 | mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */\r | |
5008 | } else {\r | |
5009 | dj.dir[DIR_Name] = DDEM; /* Remove the volume label */\r | |
5010 | }\r | |
53668523 | 5011 | }\r |
70702af1 L |
5012 | fs->wflag = 1;\r |
5013 | res = sync_fs(fs);\r | |
5014 | } else { /* No volume label entry is found or error */\r | |
53668523 L |
5015 | if (res == FR_NO_FILE) {\r |
5016 | res = FR_OK;\r | |
70702af1 L |
5017 | if (slen) { /* Create a volume label entry */\r |
5018 | res = dir_alloc(&dj, 1); /* Allocate an entry */\r | |
53668523 | 5019 | if (res == FR_OK) {\r |
70702af1 L |
5020 | mem_set(dj.dir, 0, SZDIRE); /* Clear the entry */\r |
5021 | if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {\r | |
5022 | dj.dir[XDIR_Type] = 0x83; /* Create 83 entry */\r | |
5023 | dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2);\r | |
5024 | mem_cpy(dj.dir + XDIR_Label, dirvn, slen);\r | |
5025 | } else {\r | |
5026 | dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */\r | |
5027 | mem_cpy(dj.dir, dirvn, 11);\r | |
5028 | }\r | |
5029 | fs->wflag = 1;\r | |
5030 | res = sync_fs(fs);\r | |
53668523 L |
5031 | }\r |
5032 | }\r | |
5033 | }\r | |
5034 | }\r | |
5035 | }\r | |
5036 | \r | |
70702af1 | 5037 | LEAVE_FF(fs, res);\r |
53668523 L |
5038 | }\r |
5039 | \r | |
5040 | #endif /* !_FS_READONLY */\r | |
5041 | #endif /* _USE_LABEL */\r | |
5042 | \r | |
5043 | \r | |
5044 | \r | |
70702af1 L |
5045 | #if _USE_EXPAND && !_FS_READONLY\r |
5046 | /*-----------------------------------------------------------------------*/\r | |
5047 | /* Allocate a Contiguous Blocks to the File */\r | |
5048 | /*-----------------------------------------------------------------------*/\r | |
5049 | \r | |
5050 | FRESULT f_expand (\r | |
5051 | FIL* fp, /* Pointer to the file object */\r | |
5052 | FSIZE_t fsz, /* File size to be expanded to */\r | |
5053 | BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */\r | |
5054 | )\r | |
5055 | {\r | |
5056 | FRESULT res;\r | |
5057 | FATFS *fs;\r | |
5058 | DWORD n, clst, stcl, scl, ncl, tcl, lclst;\r | |
5059 | \r | |
5060 | \r | |
5061 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r | |
5062 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r | |
5063 | if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);\r | |
5064 | #if _FS_EXFAT\r | |
5065 | if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */\r | |
5066 | #endif\r | |
5067 | n = (DWORD)fs->csize * SS(fs); /* Cluster size */\r | |
5068 | tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */\r | |
5069 | stcl = fs->last_clst; lclst = 0;\r | |
5070 | if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;\r | |
5071 | \r | |
5072 | #if _FS_EXFAT\r | |
5073 | if (fs->fs_type == FS_EXFAT) {\r | |
5074 | scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */\r | |
5075 | if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */\r | |
5076 | if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;\r | |
5077 | if (res == FR_OK) {\r | |
5078 | if (opt) {\r | |
5079 | res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */\r | |
5080 | lclst = scl + tcl - 1;\r | |
5081 | } else {\r | |
5082 | lclst = scl - 1;\r | |
5083 | }\r | |
5084 | }\r | |
5085 | } else\r | |
5086 | #endif\r | |
5087 | {\r | |
5088 | scl = clst = stcl; ncl = 0;\r | |
5089 | for (;;) { /* Find a contiguous cluster block */\r | |
5090 | n = get_fat(&fp->obj, clst);\r | |
5091 | if (++clst >= fs->n_fatent) clst = 2;\r | |
5092 | if (n == 1) { res = FR_INT_ERR; break; }\r | |
5093 | if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }\r | |
5094 | if (n == 0) { /* Is it a free cluster? */\r | |
5095 | if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */\r | |
5096 | } else {\r | |
5097 | scl = clst; ncl = 0; /* Not a free cluster */\r | |
5098 | }\r | |
5099 | if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */\r | |
5100 | }\r | |
5101 | if (res == FR_OK) {\r | |
5102 | if (opt) {\r | |
5103 | for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */\r | |
5104 | res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);\r | |
5105 | if (res != FR_OK) break;\r | |
5106 | lclst = clst;\r | |
5107 | }\r | |
5108 | } else {\r | |
5109 | lclst = scl - 1;\r | |
5110 | }\r | |
5111 | }\r | |
5112 | }\r | |
5113 | \r | |
5114 | if (res == FR_OK) {\r | |
5115 | fs->last_clst = lclst; /* Set suggested start cluster to start next */\r | |
5116 | if (opt) {\r | |
5117 | fp->obj.sclust = scl; /* Update object allocation information */\r | |
5118 | fp->obj.objsize = fsz;\r | |
5119 | if (_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */\r | |
5120 | fp->flag |= FA_MODIFIED;\r | |
5121 | if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */\r | |
5122 | fs->free_clst -= tcl;\r | |
5123 | fs->fsi_flag |= 1;\r | |
5124 | }\r | |
5125 | }\r | |
5126 | }\r | |
5127 | \r | |
5128 | LEAVE_FF(fs, res);\r | |
5129 | }\r | |
5130 | \r | |
5131 | #endif /* _USE_EXPAND && !_FS_READONLY */\r | |
5132 | \r | |
5133 | \r | |
5134 | \r | |
5135 | #if _USE_FORWARD\r | |
53668523 | 5136 | /*-----------------------------------------------------------------------*/\r |
70702af1 | 5137 | /* Forward data to the stream directly */\r |
53668523 | 5138 | /*-----------------------------------------------------------------------*/\r |
53668523 L |
5139 | \r |
5140 | FRESULT f_forward (\r | |
5141 | FIL* fp, /* Pointer to the file object */\r | |
5142 | UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */\r | |
5143 | UINT btf, /* Number of bytes to forward */\r | |
5144 | UINT* bf /* Pointer to number of bytes forwarded */\r | |
5145 | )\r | |
5146 | {\r | |
5147 | FRESULT res;\r | |
70702af1 L |
5148 | FATFS *fs;\r |
5149 | DWORD clst, sect;\r | |
5150 | FSIZE_t remain;\r | |
5151 | UINT rcnt, csect;\r | |
5152 | BYTE *dbuf;\r | |
53668523 L |
5153 | \r |
5154 | \r | |
5155 | *bf = 0; /* Clear transfer byte counter */\r | |
70702af1 L |
5156 | res = validate(&fp->obj, &fs); /* Check validity of the file object */\r |
5157 | if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r | |
5158 | if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r | |
53668523 | 5159 | \r |
70702af1 | 5160 | remain = fp->obj.objsize - fp->fptr;\r |
53668523 L |
5161 | if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */\r |
5162 | \r | |
70702af1 | 5163 | for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream goes busy */\r |
53668523 | 5164 | fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {\r |
70702af1 L |
5165 | csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */\r |
5166 | if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */\r | |
5167 | if (csect == 0) { /* On the cluster boundary? */\r | |
53668523 | 5168 | clst = (fp->fptr == 0) ? /* On the top of the file? */\r |
70702af1 L |
5169 | fp->obj.sclust : get_fat(&fp->obj, fp->clust);\r |
5170 | if (clst <= 1) ABORT(fs, FR_INT_ERR);\r | |
5171 | if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r | |
53668523 L |
5172 | fp->clust = clst; /* Update current cluster */\r |
5173 | }\r | |
5174 | }\r | |
70702af1 L |
5175 | sect = clust2sect(fs, fp->clust); /* Get current data sector */\r |
5176 | if (!sect) ABORT(fs, FR_INT_ERR);\r | |
53668523 | 5177 | sect += csect;\r |
70702af1 L |
5178 | #if _FS_TINY\r |
5179 | if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */\r | |
5180 | dbuf = fs->win;\r | |
5181 | #else\r | |
5182 | if (fp->sect != sect) { /* Fill sector cache with file data */\r | |
5183 | #if !_FS_READONLY\r | |
5184 | if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */\r | |
5185 | if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
5186 | fp->flag &= (BYTE)~FA_DIRTY;\r | |
5187 | }\r | |
5188 | #endif\r | |
5189 | if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r | |
5190 | }\r | |
5191 | dbuf = fp->buf;\r | |
5192 | #endif\r | |
5193 | fp->sect = sect;\r | |
5194 | rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */\r | |
5195 | if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */\r | |
5196 | rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */\r | |
5197 | if (!rcnt) ABORT(fs, FR_INT_ERR);\r | |
53668523 L |
5198 | }\r |
5199 | \r | |
70702af1 | 5200 | LEAVE_FF(fs, FR_OK);\r |
53668523 L |
5201 | }\r |
5202 | #endif /* _USE_FORWARD */\r | |
5203 | \r | |
5204 | \r | |
5205 | \r | |
5206 | #if _USE_MKFS && !_FS_READONLY\r | |
5207 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 5208 | /* Create FAT file system on the logical drive */\r |
53668523 | 5209 | /*-----------------------------------------------------------------------*/\r |
53668523 L |
5210 | \r |
5211 | FRESULT f_mkfs (\r | |
5212 | const TCHAR* path, /* Logical drive number */\r | |
70702af1 L |
5213 | BYTE opt, /* Format option */\r |
5214 | DWORD au, /* Size of allocation unit [byte] */\r | |
5215 | void* work, /* Pointer to working buffer */\r | |
5216 | UINT len /* Size of working buffer */\r | |
53668523 L |
5217 | )\r |
5218 | {\r | |
70702af1 L |
5219 | const UINT n_fats = 1; /* Number of FATs for FAT12/16/32 volume (1 or 2) */\r |
5220 | const UINT n_rootdir = 512; /* Number of root directory entries for FAT12/16 volume */\r | |
5221 | static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT12/16 volume (4Ks unit) */\r | |
5222 | static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */\r | |
5223 | BYTE fmt, sys, *buf, *pte, pdrv, part;\r | |
5224 | WORD ss;\r | |
5225 | DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n;\r | |
5226 | DWORD b_vol, b_fat, b_data; /* Base LBA for volume, fat, data */\r | |
5227 | DWORD sz_vol, sz_rsv, sz_fat, sz_dir; /* Size for volume, fat, dir, data */\r | |
53668523 | 5228 | UINT i;\r |
70702af1 | 5229 | int vol;\r |
53668523 | 5230 | DSTATUS stat;\r |
70702af1 L |
5231 | #if _USE_TRIM || _FS_EXFAT\r |
5232 | DWORD tbl[3];\r | |
5233 | #endif\r | |
53668523 L |
5234 | \r |
5235 | \r | |
5236 | /* Check mounted drive and clear work area */\r | |
70702af1 | 5237 | vol = get_ldnumber(&path); /* Get target logical drive */\r |
53668523 | 5238 | if (vol < 0) return FR_INVALID_DRIVE;\r |
70702af1 | 5239 | if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear mounted volume */\r |
53668523 | 5240 | pdrv = LD2PD(vol); /* Physical drive */\r |
70702af1 | 5241 | part = LD2PT(vol); /* Partition (0:create as new, 1-4:get from partition table) */\r |
53668523 | 5242 | \r |
70702af1 | 5243 | /* Check physical drive status */\r |
53668523 L |
5244 | stat = disk_initialize(pdrv);\r |
5245 | if (stat & STA_NOINIT) return FR_NOT_READY;\r | |
5246 | if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r | |
70702af1 L |
5247 | if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Erase block to align data area */\r |
5248 | #if _MAX_SS != _MIN_SS /* Get sector size of the medium */\r | |
5249 | if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;\r | |
5250 | if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;\r | |
5251 | #else\r | |
5252 | ss = _MAX_SS;\r | |
53668523 | 5253 | #endif\r |
70702af1 L |
5254 | if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */\r |
5255 | au /= ss; /* Cluster size in unit of sector */\r | |
5256 | \r | |
5257 | /* Get working buffer */\r | |
5258 | buf = (BYTE*)work; /* Working buffer */\r | |
5259 | sz_buf = len / ss; /* Size of working buffer (sector) */\r | |
5260 | szb_buf = sz_buf * ss; /* Size of working buffer (byte) */\r | |
5261 | if (!szb_buf) return FR_MKFS_ABORTED;\r | |
5262 | \r | |
5263 | /* Determine where the volume to be located (b_vol, sz_vol) */\r | |
5264 | if (_MULTI_PARTITION && part != 0) {\r | |
53668523 | 5265 | /* Get partition information from partition table in the MBR */\r |
70702af1 L |
5266 | if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */\r |
5267 | if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */\r | |
5268 | pte = buf + (MBR_Table + (part - 1) * SZ_PTE);\r | |
5269 | if (!pte[PTE_System]) return FR_MKFS_ABORTED; /* No partition? */\r | |
5270 | b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */\r | |
5271 | sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */\r | |
53668523 | 5272 | } else {\r |
70702af1 L |
5273 | /* Create a single-partition in this function */\r |
5274 | if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) return FR_DISK_ERR;\r | |
5275 | b_vol = (opt & FM_SFD) ? 0 : 63; /* Volume start sector */\r | |
5276 | if (sz_vol < b_vol) return FR_MKFS_ABORTED;\r | |
5277 | sz_vol -= b_vol; /* Volume size */\r | |
53668523 | 5278 | }\r |
70702af1 | 5279 | if (sz_vol < 128) return FR_MKFS_ABORTED; /* Check if volume size is >=128s */\r |
53668523 | 5280 | \r |
70702af1 L |
5281 | /* Pre-determine the FAT type */\r |
5282 | do {\r | |
5283 | if (_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */\r | |
5284 | if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) { /* exFAT only, vol >= 64Ms or au > 128s ? */\r | |
5285 | fmt = FS_EXFAT; break;\r | |
5286 | }\r | |
5287 | }\r | |
5288 | if (au > 128) return FR_INVALID_PARAMETER; /* Too large au for FAT/FAT32 */\r | |
5289 | if (opt & FM_FAT32) { /* FAT32 possible? */\r | |
5290 | if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) { /* FAT32 only or no-FAT? */\r | |
5291 | fmt = FS_FAT32; break;\r | |
5292 | }\r | |
5293 | }\r | |
5294 | if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER; /* no-FAT? */\r | |
5295 | fmt = FS_FAT16;\r | |
5296 | } while (0);\r | |
5297 | \r | |
5298 | #if _FS_EXFAT\r | |
5299 | if (fmt == FS_EXFAT) { /* Create an exFAT volume */\r | |
5300 | DWORD szb_bit, szb_case, sum, nb, cl;\r | |
5301 | WCHAR ch, si;\r | |
5302 | UINT j, st;\r | |
5303 | BYTE b;\r | |
5304 | \r | |
5305 | if (sz_vol < 0x1000) return FR_MKFS_ABORTED; /* Too small volume? */\r | |
5306 | #if _USE_TRIM\r | |
5307 | tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */\r | |
5308 | disk_ioctl(pdrv, CTRL_TRIM, tbl);\r | |
5309 | #endif\r | |
5310 | /* Determine FAT location, data location and number of clusters */\r | |
5311 | if (!au) { /* au auto-selection */\r | |
5312 | au = 8;\r | |
5313 | if (sz_vol >= 0x80000) au = 64; /* >= 512Ks */\r | |
5314 | if (sz_vol >= 0x4000000) au = 256; /* >= 64Ms */\r | |
5315 | }\r | |
5316 | b_fat = b_vol + 32; /* FAT start at offset 32 */\r | |
5317 | sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */\r | |
5318 | b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */\r | |
5319 | if (b_data >= sz_vol / 2) return FR_MKFS_ABORTED; /* Too small volume? */\r | |
5320 | n_clst = (sz_vol - (b_data - b_vol)) / au; /* Number of clusters */\r | |
5321 | if (n_clst <16) return FR_MKFS_ABORTED; /* Too few clusters? */\r | |
5322 | if (n_clst > MAX_EXFAT) return FR_MKFS_ABORTED; /* Too many clusters? */\r | |
5323 | \r | |
5324 | szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */\r | |
5325 | tbl[0] = (szb_bit + au * ss - 1) / (au * ss); /* Number of allocation bitmap clusters */\r | |
5326 | \r | |
5327 | /* Create a compressed up-case table */\r | |
5328 | sect = b_data + au * tbl[0]; /* Table start sector */\r | |
5329 | sum = 0; /* Table checksum to be stored in the 82 entry */\r | |
5330 | st = si = i = j = szb_case = 0;\r | |
5331 | do {\r | |
5332 | switch (st) {\r | |
5333 | case 0:\r | |
5334 | ch = ff_wtoupper(si); /* Get an up-case char */\r | |
5335 | if (ch != si) {\r | |
5336 | si++; break; /* Store the up-case char if exist */\r | |
5337 | }\r | |
5338 | for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */\r | |
5339 | if (j >= 128) {\r | |
5340 | ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */\r | |
5341 | }\r | |
5342 | st = 1; /* Do not compress short run */\r | |
5343 | /* continue */\r | |
5344 | case 1:\r | |
5345 | ch = si++; /* Fill the short run */\r | |
5346 | if (--j == 0) st = 0;\r | |
5347 | break;\r | |
5348 | default:\r | |
5349 | ch = (WCHAR)j; si += j; /* Number of chars to skip */\r | |
5350 | st = 0;\r | |
5351 | }\r | |
5352 | sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */\r | |
5353 | sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);\r | |
5354 | i += 2; szb_case += 2;\r | |
5355 | if (!si || i == szb_buf) { /* Write buffered data when buffer full or end of process */\r | |
5356 | n = (i + ss - 1) / ss;\r | |
5357 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;\r | |
5358 | sect += n; i = 0;\r | |
5359 | }\r | |
5360 | } while (si);\r | |
5361 | tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case table clusters */\r | |
5362 | tbl[2] = 1; /* Number of root dir clusters */\r | |
53668523 | 5363 | \r |
70702af1 L |
5364 | /* Initialize the allocation bitmap */\r |
5365 | sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */\r | |
5366 | nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */\r | |
5367 | do {\r | |
5368 | mem_set(buf, 0, szb_buf);\r | |
5369 | for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ;\r | |
5370 | for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ;\r | |
5371 | n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */\r | |
5372 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;\r | |
5373 | sect += n; nsect -= n;\r | |
5374 | } while (nsect);\r | |
5375 | \r | |
5376 | /* Initialize the FAT */\r | |
5377 | sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */\r | |
5378 | j = nb = cl = 0;\r | |
5379 | do {\r | |
5380 | mem_set(buf, 0, szb_buf); i = 0; /* Clear work area and reset write index */\r | |
5381 | if (cl == 0) { /* Set entry 0 and 1 */\r | |
5382 | st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;\r | |
5383 | st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;\r | |
5384 | }\r | |
5385 | do { /* Create chains of bitmap, up-case and root dir */\r | |
5386 | while (nb && i < szb_buf) { /* Create a chain */\r | |
5387 | st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);\r | |
5388 | i += 4; cl++; nb--;\r | |
5389 | }\r | |
5390 | if (!nb && j < 3) nb = tbl[j++]; /* Next chain */\r | |
5391 | } while (nb && i < szb_buf);\r | |
5392 | n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */\r | |
5393 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;\r | |
5394 | sect += n; nsect -= n;\r | |
5395 | } while (nsect);\r | |
5396 | \r | |
5397 | /* Initialize the root directory */\r | |
5398 | mem_set(buf, 0, szb_buf);\r | |
5399 | buf[SZDIRE * 0 + 0] = 0x83; /* 83 entry (volume label) */\r | |
5400 | buf[SZDIRE * 1 + 0] = 0x81; /* 81 entry (allocation bitmap) */\r | |
5401 | st_dword(buf + SZDIRE * 1 + 20, 2);\r | |
5402 | st_dword(buf + SZDIRE * 1 + 24, szb_bit);\r | |
5403 | buf[SZDIRE * 2 + 0] = 0x82; /* 82 entry (up-case table) */\r | |
5404 | st_dword(buf + SZDIRE * 2 + 4, sum);\r | |
5405 | st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]);\r | |
5406 | st_dword(buf + SZDIRE * 2 + 24, szb_case);\r | |
5407 | sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */\r | |
5408 | do { /* Fill root directory sectors */\r | |
5409 | n = (nsect > sz_buf) ? sz_buf : nsect;\r | |
5410 | if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;\r | |
5411 | mem_set(buf, 0, ss);\r | |
5412 | sect += n; nsect -= n;\r | |
5413 | } while (nsect);\r | |
5414 | \r | |
5415 | /* Create two set of the exFAT VBR blocks */\r | |
5416 | sect = b_vol;\r | |
5417 | for (n = 0; n < 2; n++) {\r | |
5418 | /* Main record (+0) */\r | |
5419 | mem_set(buf, 0, ss);\r | |
5420 | mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */\r | |
5421 | st_dword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */\r | |
5422 | st_dword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */\r | |
5423 | st_dword(buf + BPB_FatOfsEx, b_fat - b_vol); /* FAT offset [sector] */\r | |
5424 | st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */\r | |
5425 | st_dword(buf + BPB_DataOfsEx, b_data - b_vol); /* Data offset [sector] */\r | |
5426 | st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */\r | |
5427 | st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */\r | |
5428 | st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */\r | |
5429 | st_word(buf + BPB_FSVerEx, 0x100); /* File system version (1.00) */\r | |
5430 | for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */\r | |
5431 | for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */\r | |
5432 | buf[BPB_NumFATsEx] = 1; /* Number of FATs */\r | |
5433 | buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */\r | |
5434 | st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */\r | |
5435 | st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */\r | |
5436 | for (i = sum = 0; i < ss; i++) { /* VBR checksum */\r | |
5437 | if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);\r | |
5438 | }\r | |
5439 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;\r | |
5440 | /* Extended bootstrap record (+1..+8) */\r | |
5441 | mem_set(buf, 0, ss);\r | |
5442 | st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */\r | |
5443 | for (j = 1; j < 9; j++) {\r | |
5444 | for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */\r | |
5445 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;\r | |
5446 | }\r | |
5447 | /* OEM/Reserved record (+9..+10) */\r | |
5448 | mem_set(buf, 0, ss);\r | |
5449 | for ( ; j < 11; j++) {\r | |
5450 | for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */\r | |
5451 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;\r | |
5452 | }\r | |
5453 | /* Sum record (+11) */\r | |
5454 | for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */\r | |
5455 | if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;\r | |
5456 | }\r | |
53668523 | 5457 | \r |
70702af1 L |
5458 | } else\r |
5459 | #endif /* _FS_EXFAT */\r | |
5460 | { /* Create an FAT12/16/32 volume */\r | |
5461 | do {\r | |
5462 | pau = au;\r | |
5463 | /* Pre-determine number of clusters and FAT sub-type */\r | |
5464 | if (fmt == FS_FAT32) { /* FAT32 volume */\r | |
5465 | if (!pau) { /* au auto-selection */\r | |
5466 | n = sz_vol / 0x20000; /* Volume size in unit of 128KS */\r | |
5467 | for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */\r | |
5468 | }\r | |
5469 | n_clst = sz_vol / pau; /* Number of clusters */\r | |
5470 | sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */\r | |
5471 | sz_rsv = 32; /* Number of reserved sectors */\r | |
5472 | sz_dir = 0; /* No static directory */\r | |
5473 | if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) return FR_MKFS_ABORTED;\r | |
5474 | } else { /* FAT12/16 volume */\r | |
5475 | if (!pau) { /* au auto-selection */\r | |
5476 | n = sz_vol / 0x1000; /* Volume size in unit of 4KS */\r | |
5477 | for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */\r | |
5478 | }\r | |
5479 | n_clst = sz_vol / pau;\r | |
5480 | if (n_clst > MAX_FAT12) {\r | |
5481 | n = n_clst * 2 + 4; /* FAT size [byte] */\r | |
5482 | } else {\r | |
5483 | fmt = FS_FAT12;\r | |
5484 | n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */\r | |
5485 | }\r | |
5486 | sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */\r | |
5487 | sz_rsv = 1; /* Number of reserved sectors */\r | |
5488 | sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */\r | |
5489 | }\r | |
5490 | b_fat = b_vol + sz_rsv; /* FAT base */\r | |
5491 | b_data = b_fat + sz_fat * n_fats + sz_dir; /* Data base */\r | |
5492 | \r | |
5493 | /* Align data base to erase block boundary (for flash memory media) */\r | |
5494 | n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data; /* Next nearest erase block from current data base */\r | |
5495 | if (fmt == FS_FAT32) { /* FAT32: Move FAT base */\r | |
5496 | sz_rsv += n; b_fat += n;\r | |
5497 | } else { /* FAT12/16: Expand FAT size */\r | |
5498 | sz_fat += n / n_fats;\r | |
5499 | }\r | |
5500 | \r | |
5501 | /* Determine number of clusters and final check of validity of the FAT sub-type */\r | |
5502 | if (sz_vol < b_data + pau * 16 - b_vol) return FR_MKFS_ABORTED; /* Too small volume */\r | |
5503 | n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau;\r | |
5504 | if (fmt == FS_FAT32) {\r | |
5505 | if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32 */\r | |
5506 | if (!au && (au = pau / 2) != 0) continue; /* Adjust cluster size and retry */\r | |
5507 | return FR_MKFS_ABORTED;\r | |
5508 | }\r | |
5509 | }\r | |
5510 | if (fmt == FS_FAT16) {\r | |
5511 | if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */\r | |
5512 | if (!au && (pau * 2) <= 64) {\r | |
5513 | au = pau * 2; continue; /* Adjust cluster size and retry */\r | |
5514 | }\r | |
5515 | if ((opt & FM_FAT32)) {\r | |
5516 | fmt = FS_FAT32; continue; /* Switch type to FAT32 and retry */\r | |
5517 | }\r | |
5518 | if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */\r | |
5519 | return FR_MKFS_ABORTED;\r | |
5520 | }\r | |
5521 | if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */\r | |
5522 | if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */\r | |
5523 | return FR_MKFS_ABORTED;\r | |
5524 | }\r | |
5525 | }\r | |
5526 | if (fmt == FS_FAT12 && n_clst > MAX_FAT12) return FR_MKFS_ABORTED; /* Too many clusters for FAT12 */\r | |
5527 | \r | |
5528 | /* Ok, it is the valid cluster configuration */\r | |
5529 | break;\r | |
5530 | } while (1);\r | |
5531 | \r | |
5532 | #if _USE_TRIM\r | |
5533 | tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */\r | |
5534 | disk_ioctl(pdrv, CTRL_TRIM, tbl);\r | |
5535 | #endif\r | |
5536 | /* Create FAT VBR */\r | |
5537 | mem_set(buf, 0, ss);\r | |
5538 | mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */\r | |
5539 | st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */\r | |
5540 | buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */\r | |
5541 | st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */\r | |
5542 | buf[BPB_NumFATs] = (BYTE)n_fats; /* Number of FATs */\r | |
5543 | st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir)); /* Number of root directory entries */\r | |
5544 | if (sz_vol < 0x10000) {\r | |
5545 | st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */\r | |
53668523 | 5546 | } else {\r |
70702af1 L |
5547 | st_dword(buf + BPB_TotSec32, sz_vol); /* Volume size in 32-bit LBA */\r |
5548 | }\r | |
5549 | buf[BPB_Media] = 0xF8; /* Media descriptor byte */\r | |
5550 | st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */\r | |
5551 | st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */\r | |
5552 | st_dword(buf + BPB_HiddSec, b_vol); /* Volume offset in the physical drive [sector] */\r | |
5553 | if (fmt == FS_FAT32) {\r | |
5554 | st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */\r | |
5555 | st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */\r | |
5556 | st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */\r | |
5557 | st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */\r | |
5558 | st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */\r | |
5559 | buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */\r | |
5560 | buf[BS_BootSig32] = 0x29; /* Extended boot signature */\r | |
5561 | mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */\r | |
5562 | } else {\r | |
5563 | st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */\r | |
5564 | st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */\r | |
5565 | buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */\r | |
5566 | buf[BS_BootSig] = 0x29; /* Extended boot signature */\r | |
5567 | mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */\r | |
5568 | }\r | |
5569 | st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */\r | |
5570 | if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the VBR sector */\r | |
5571 | \r | |
5572 | /* Create FSINFO record if needed */\r | |
5573 | if (fmt == FS_FAT32) {\r | |
5574 | disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */\r | |
5575 | mem_set(buf, 0, ss);\r | |
5576 | st_dword(buf + FSI_LeadSig, 0x41615252);\r | |
5577 | st_dword(buf + FSI_StrucSig, 0x61417272);\r | |
5578 | st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */\r | |
5579 | st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */\r | |
5580 | st_word(buf + BS_55AA, 0xAA55);\r | |
5581 | disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */\r | |
5582 | disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */\r | |
53668523 | 5583 | }\r |
53668523 | 5584 | \r |
70702af1 L |
5585 | /* Initialize FAT area */\r |
5586 | mem_set(buf, 0, (UINT)szb_buf);\r | |
5587 | sect = b_fat; /* FAT start sector */\r | |
5588 | for (i = 0; i < n_fats; i++) { /* Initialize FATs each */\r | |
5589 | if (fmt == FS_FAT32) {\r | |
5590 | st_dword(buf + 0, 0xFFFFFFF8); /* Entry 0 */\r | |
5591 | st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */\r | |
5592 | st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */\r | |
5593 | } else {\r | |
5594 | st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */\r | |
5595 | }\r | |
5596 | nsect = sz_fat; /* Number of FAT sectors */\r | |
5597 | do { /* Fill FAT sectors */\r | |
5598 | n = (nsect > sz_buf) ? sz_buf : nsect;\r | |
5599 | if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;\r | |
5600 | mem_set(buf, 0, ss);\r | |
5601 | sect += n; nsect -= n;\r | |
5602 | } while (nsect);\r | |
53668523 | 5603 | }\r |
53668523 | 5604 | \r |
70702af1 L |
5605 | /* Initialize root directory (fill with zero) */\r |
5606 | nsect = (fmt == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */\r | |
5607 | do {\r | |
5608 | n = (nsect > sz_buf) ? sz_buf : nsect;\r | |
5609 | if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;\r | |
5610 | sect += n; nsect -= n;\r | |
5611 | } while (nsect);\r | |
53668523 | 5612 | }\r |
70702af1 L |
5613 | \r |
5614 | /* Determine system ID in the partition table */\r | |
5615 | if (_FS_EXFAT && fmt == FS_EXFAT) {\r | |
5616 | sys = 0x07; /* HPFS/NTFS/exFAT */\r | |
53668523 | 5617 | } else {\r |
70702af1 L |
5618 | if (fmt == FS_FAT32) {\r |
5619 | sys = 0x0C; /* FAT32X */\r | |
53668523 | 5620 | } else {\r |
70702af1 L |
5621 | if (sz_vol >= 0x10000) {\r |
5622 | sys = 0x06; /* FAT12/16 (>=64KS) */\r | |
5623 | } else {\r | |
5624 | sys = (fmt == FS_FAT16) ? 0x04 : 0x01; /* FAT16 (<64KS) : FAT12 (<64KS) */\r | |
5625 | }\r | |
53668523 L |
5626 | }\r |
5627 | }\r | |
5628 | \r | |
70702af1 L |
5629 | if (_MULTI_PARTITION && part != 0) {\r |
5630 | /* Update system ID in the partition table */\r | |
5631 | if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Read the MBR */\r | |
5632 | buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys; /* Set system type */\r | |
5633 | if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it back to the MBR */\r | |
5634 | } else {\r | |
5635 | if (!(opt & FM_SFD)) {\r | |
5636 | /* Create partition table in FDISK format */\r | |
5637 | mem_set(buf, 0, ss);\r | |
5638 | st_word(buf + BS_55AA, 0xAA55); /* MBR signature */\r | |
5639 | pte = buf + MBR_Table; /* Create partition table for single partition in the drive */\r | |
5640 | pte[PTE_Boot] = 0; /* Boot indicator */\r | |
5641 | pte[PTE_StHead] = 1; /* Start head */\r | |
5642 | pte[PTE_StSec] = 1; /* Start sector */\r | |
5643 | pte[PTE_StCyl] = 0; /* Start cylinder */\r | |
5644 | pte[PTE_System] = sys; /* System type */\r | |
5645 | n = (b_vol + sz_vol) / (63 * 255); /* (End CHS is incorrect) */\r | |
5646 | pte[PTE_EdHead] = 254; /* End head */\r | |
5647 | pte[PTE_EdSec] = (BYTE)(n >> 2 | 63); /* End sector */\r | |
5648 | pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */\r | |
5649 | st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */\r | |
5650 | st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */\r | |
5651 | if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */\r | |
5652 | }\r | |
53668523 | 5653 | }\r |
53668523 | 5654 | \r |
70702af1 | 5655 | if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) return FR_DISK_ERR;\r |
53668523 | 5656 | \r |
70702af1 | 5657 | return FR_OK;\r |
53668523 L |
5658 | }\r |
5659 | \r | |
5660 | \r | |
5661 | \r | |
5662 | #if _MULTI_PARTITION\r | |
5663 | /*-----------------------------------------------------------------------*/\r | |
70702af1 | 5664 | /* Create partition table on the physical drive */\r |
53668523 L |
5665 | /*-----------------------------------------------------------------------*/\r |
5666 | \r | |
5667 | FRESULT f_fdisk (\r | |
5668 | BYTE pdrv, /* Physical drive number */\r | |
70702af1 | 5669 | const DWORD* szt, /* Pointer to the size table for each partitions */\r |
53668523 L |
5670 | void* work /* Pointer to the working buffer */\r |
5671 | )\r | |
5672 | {\r | |
5673 | UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;\r | |
5674 | BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;\r | |
5675 | DSTATUS stat;\r | |
5676 | DWORD sz_disk, sz_part, s_part;\r | |
5677 | \r | |
5678 | \r | |
5679 | stat = disk_initialize(pdrv);\r | |
5680 | if (stat & STA_NOINIT) return FR_NOT_READY;\r | |
5681 | if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r | |
5682 | if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;\r | |
5683 | \r | |
70702af1 | 5684 | /* Determine the CHS without any care of the drive geometry */\r |
53668523 L |
5685 | for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;\r |
5686 | if (n == 256) n--;\r | |
5687 | e_hd = n - 1;\r | |
5688 | sz_cyl = 63 * n;\r | |
5689 | tot_cyl = sz_disk / sz_cyl;\r | |
5690 | \r | |
5691 | /* Create partition table */\r | |
5692 | mem_set(buf, 0, _MAX_SS);\r | |
5693 | p = buf + MBR_Table; b_cyl = 0;\r | |
5694 | for (i = 0; i < 4; i++, p += SZ_PTE) {\r | |
5695 | p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;\r | |
5696 | if (!p_cyl) continue;\r | |
5697 | s_part = (DWORD)sz_cyl * b_cyl;\r | |
5698 | sz_part = (DWORD)sz_cyl * p_cyl;\r | |
5699 | if (i == 0) { /* Exclude first track of cylinder 0 */\r | |
5700 | s_hd = 1;\r | |
5701 | s_part += 63; sz_part -= 63;\r | |
5702 | } else {\r | |
5703 | s_hd = 0;\r | |
5704 | }\r | |
5705 | e_cyl = b_cyl + p_cyl - 1;\r | |
5706 | if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;\r | |
5707 | \r | |
5708 | /* Set partition table */\r | |
5709 | p[1] = s_hd; /* Start head */\r | |
5710 | p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */\r | |
5711 | p[3] = (BYTE)b_cyl; /* Start cylinder */\r | |
5712 | p[4] = 0x06; /* System type (temporary setting) */\r | |
5713 | p[5] = e_hd; /* End head */\r | |
5714 | p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */\r | |
5715 | p[7] = (BYTE)e_cyl; /* End cylinder */\r | |
70702af1 L |
5716 | st_dword(p + 8, s_part); /* Start sector in LBA */\r |
5717 | st_dword(p + 12, sz_part); /* Partition size */\r | |
53668523 L |
5718 | \r |
5719 | /* Next partition */\r | |
5720 | b_cyl += p_cyl;\r | |
5721 | }\r | |
70702af1 | 5722 | st_word(p, 0xAA55);\r |
53668523 L |
5723 | \r |
5724 | /* Write it to the MBR */\r | |
7b78a5a2 | 5725 | return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;\r |
53668523 L |
5726 | }\r |
5727 | \r | |
53668523 L |
5728 | #endif /* _MULTI_PARTITION */\r |
5729 | #endif /* _USE_MKFS && !_FS_READONLY */\r | |
5730 | \r | |
5731 | \r | |
5732 | \r | |
5733 | \r | |
5734 | #if _USE_STRFUNC\r | |
5735 | /*-----------------------------------------------------------------------*/\r | |
5736 | /* Get a string from the file */\r | |
5737 | /*-----------------------------------------------------------------------*/\r | |
5738 | \r | |
5739 | TCHAR* f_gets (\r | |
5740 | TCHAR* buff, /* Pointer to the string buffer to read */\r | |
5741 | int len, /* Size of string buffer (characters) */\r | |
5742 | FIL* fp /* Pointer to the file object */\r | |
5743 | )\r | |
5744 | {\r | |
5745 | int n = 0;\r | |
5746 | TCHAR c, *p = buff;\r | |
5747 | BYTE s[2];\r | |
5748 | UINT rc;\r | |
5749 | \r | |
5750 | \r | |
5751 | while (n < len - 1) { /* Read characters until buffer gets filled */\r | |
70702af1 | 5752 | #if _LFN_UNICODE\r |
53668523 L |
5753 | #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */\r |
5754 | f_read(fp, s, 1, &rc);\r | |
5755 | if (rc != 1) break;\r | |
5756 | c = s[0];\r | |
5757 | if (c >= 0x80) {\r | |
5758 | if (c < 0xC0) continue; /* Skip stray trailer */\r | |
5759 | if (c < 0xE0) { /* Two-byte sequence */\r | |
5760 | f_read(fp, s, 1, &rc);\r | |
5761 | if (rc != 1) break;\r | |
5762 | c = (c & 0x1F) << 6 | (s[0] & 0x3F);\r | |
5763 | if (c < 0x80) c = '?';\r | |
5764 | } else {\r | |
5765 | if (c < 0xF0) { /* Three-byte sequence */\r | |
5766 | f_read(fp, s, 2, &rc);\r | |
5767 | if (rc != 2) break;\r | |
5768 | c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F);\r | |
5769 | if (c < 0x800) c = '?';\r | |
5770 | } else { /* Reject four-byte sequence */\r | |
5771 | c = '?';\r | |
5772 | }\r | |
5773 | }\r | |
5774 | }\r | |
5775 | #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */\r | |
5776 | f_read(fp, s, 2, &rc);\r | |
5777 | if (rc != 2) break;\r | |
5778 | c = s[1] + (s[0] << 8);\r | |
5779 | #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */\r | |
5780 | f_read(fp, s, 2, &rc);\r | |
5781 | if (rc != 2) break;\r | |
5782 | c = s[0] + (s[1] << 8);\r | |
5783 | #else /* Read a character in ANSI/OEM */\r | |
5784 | f_read(fp, s, 1, &rc);\r | |
5785 | if (rc != 1) break;\r | |
5786 | c = s[0];\r | |
5787 | if (IsDBCS1(c)) {\r | |
5788 | f_read(fp, s, 1, &rc);\r | |
5789 | if (rc != 1) break;\r | |
5790 | c = (c << 8) + s[0];\r | |
5791 | }\r | |
5792 | c = ff_convert(c, 1); /* OEM -> Unicode */\r | |
5793 | if (!c) c = '?';\r | |
5794 | #endif\r | |
5795 | #else /* Read a character without conversion */\r | |
5796 | f_read(fp, s, 1, &rc);\r | |
5797 | if (rc != 1) break;\r | |
5798 | c = s[0];\r | |
5799 | #endif\r | |
5800 | if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */\r | |
5801 | *p++ = c;\r | |
5802 | n++;\r | |
5803 | if (c == '\n') break; /* Break on EOL */\r | |
5804 | }\r | |
5805 | *p = 0;\r | |
5806 | return n ? buff : 0; /* When no data read (eof or error), return with error. */\r | |
5807 | }\r | |
5808 | \r | |
5809 | \r | |
5810 | \r | |
70702af1 | 5811 | \r |
53668523 L |
5812 | #if !_FS_READONLY\r |
5813 | #include <stdarg.h>\r | |
5814 | /*-----------------------------------------------------------------------*/\r | |
5815 | /* Put a character to the file */\r | |
5816 | /*-----------------------------------------------------------------------*/\r | |
5817 | \r | |
5818 | typedef struct {\r | |
70702af1 L |
5819 | FIL *fp; /* Ptr to the writing file */\r |
5820 | int idx, nchr; /* Write index of buf[] (-1:error), number of chars written */\r | |
5821 | BYTE buf[64]; /* Write buffer */\r | |
53668523 L |
5822 | } putbuff;\r |
5823 | \r | |
5824 | \r | |
5825 | static\r | |
70702af1 | 5826 | void putc_bfd ( /* Buffered write with code conversion */\r |
53668523 L |
5827 | putbuff* pb,\r |
5828 | TCHAR c\r | |
5829 | )\r | |
5830 | {\r | |
5831 | UINT bw;\r | |
5832 | int i;\r | |
5833 | \r | |
5834 | \r | |
70702af1 | 5835 | if (_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */\r |
53668523 | 5836 | putc_bfd(pb, '\r');\r |
70702af1 | 5837 | }\r |
53668523 | 5838 | \r |
70702af1 | 5839 | i = pb->idx; /* Write index of pb->buf[] */\r |
53668523 L |
5840 | if (i < 0) return;\r |
5841 | \r | |
70702af1 | 5842 | #if _LFN_UNICODE\r |
53668523 L |
5843 | #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */\r |
5844 | if (c < 0x80) { /* 7-bit */\r | |
5845 | pb->buf[i++] = (BYTE)c;\r | |
5846 | } else {\r | |
5847 | if (c < 0x800) { /* 11-bit */\r | |
5848 | pb->buf[i++] = (BYTE)(0xC0 | c >> 6);\r | |
5849 | } else { /* 16-bit */\r | |
5850 | pb->buf[i++] = (BYTE)(0xE0 | c >> 12);\r | |
5851 | pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F));\r | |
5852 | }\r | |
5853 | pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F));\r | |
5854 | }\r | |
5855 | #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */\r | |
5856 | pb->buf[i++] = (BYTE)(c >> 8);\r | |
5857 | pb->buf[i++] = (BYTE)c;\r | |
5858 | #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */\r | |
5859 | pb->buf[i++] = (BYTE)c;\r | |
5860 | pb->buf[i++] = (BYTE)(c >> 8);\r | |
5861 | #else /* Write a character in ANSI/OEM */\r | |
5862 | c = ff_convert(c, 0); /* Unicode -> OEM */\r | |
5863 | if (!c) c = '?';\r | |
5864 | if (c >= 0x100)\r | |
5865 | pb->buf[i++] = (BYTE)(c >> 8);\r | |
5866 | pb->buf[i++] = (BYTE)c;\r | |
5867 | #endif\r | |
5868 | #else /* Write a character without conversion */\r | |
5869 | pb->buf[i++] = (BYTE)c;\r | |
5870 | #endif\r | |
5871 | \r | |
5872 | if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */\r | |
5873 | f_write(pb->fp, pb->buf, (UINT)i, &bw);\r | |
5874 | i = (bw == (UINT)i) ? 0 : -1;\r | |
5875 | }\r | |
5876 | pb->idx = i;\r | |
5877 | pb->nchr++;\r | |
5878 | }\r | |
5879 | \r | |
5880 | \r | |
70702af1 L |
5881 | static\r |
5882 | int putc_flush ( /* Flush left characters in the buffer */\r | |
5883 | putbuff* pb\r | |
5884 | )\r | |
5885 | {\r | |
5886 | UINT nw;\r | |
5887 | \r | |
5888 | if ( pb->idx >= 0 /* Flush buffered characters to the file */\r | |
5889 | && f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK\r | |
5890 | && (UINT)pb->idx == nw) return pb->nchr;\r | |
5891 | return EOF;\r | |
5892 | }\r | |
5893 | \r | |
5894 | \r | |
5895 | static\r | |
5896 | void putc_init ( /* Initialize write buffer */\r | |
5897 | putbuff* pb,\r | |
5898 | FIL* fp\r | |
5899 | )\r | |
5900 | {\r | |
5901 | pb->fp = fp;\r | |
5902 | pb->nchr = pb->idx = 0;\r | |
5903 | }\r | |
5904 | \r | |
5905 | \r | |
53668523 L |
5906 | \r |
5907 | int f_putc (\r | |
5908 | TCHAR c, /* A character to be output */\r | |
5909 | FIL* fp /* Pointer to the file object */\r | |
5910 | )\r | |
5911 | {\r | |
5912 | putbuff pb;\r | |
53668523 | 5913 | \r |
53668523 | 5914 | \r |
70702af1 L |
5915 | putc_init(&pb, fp);\r |
5916 | putc_bfd(&pb, c); /* Put the character */\r | |
5917 | return putc_flush(&pb);\r | |
53668523 L |
5918 | }\r |
5919 | \r | |
5920 | \r | |
5921 | \r | |
5922 | \r | |
5923 | /*-----------------------------------------------------------------------*/\r | |
5924 | /* Put a string to the file */\r | |
5925 | /*-----------------------------------------------------------------------*/\r | |
5926 | \r | |
5927 | int f_puts (\r | |
5928 | const TCHAR* str, /* Pointer to the string to be output */\r | |
5929 | FIL* fp /* Pointer to the file object */\r | |
5930 | )\r | |
5931 | {\r | |
5932 | putbuff pb;\r | |
53668523 | 5933 | \r |
53668523 | 5934 | \r |
70702af1 L |
5935 | putc_init(&pb, fp);\r |
5936 | while (*str) putc_bfd(&pb, *str++); /* Put the string */\r | |
5937 | return putc_flush(&pb);\r | |
53668523 L |
5938 | }\r |
5939 | \r | |
5940 | \r | |
5941 | \r | |
5942 | \r | |
5943 | /*-----------------------------------------------------------------------*/\r | |
5944 | /* Put a formatted string to the file */\r | |
5945 | /*-----------------------------------------------------------------------*/\r | |
5946 | \r | |
5947 | int f_printf (\r | |
5948 | FIL* fp, /* Pointer to the file object */\r | |
5949 | const TCHAR* fmt, /* Pointer to the format string */\r | |
5950 | ... /* Optional arguments... */\r | |
5951 | )\r | |
5952 | {\r | |
5953 | va_list arp;\r | |
70702af1 | 5954 | putbuff pb;\r |
53668523 | 5955 | BYTE f, r;\r |
70702af1 | 5956 | UINT i, j, w;\r |
53668523 | 5957 | DWORD v;\r |
70702af1 | 5958 | TCHAR c, d, str[32], *p;\r |
53668523 L |
5959 | \r |
5960 | \r | |
70702af1 | 5961 | putc_init(&pb, fp);\r |
53668523 L |
5962 | \r |
5963 | va_start(arp, fmt);\r | |
5964 | \r | |
5965 | for (;;) {\r | |
5966 | c = *fmt++;\r | |
5967 | if (c == 0) break; /* End of string */\r | |
5968 | if (c != '%') { /* Non escape character */\r | |
5969 | putc_bfd(&pb, c);\r | |
5970 | continue;\r | |
5971 | }\r | |
5972 | w = f = 0;\r | |
5973 | c = *fmt++;\r | |
5974 | if (c == '0') { /* Flag: '0' padding */\r | |
5975 | f = 1; c = *fmt++;\r | |
5976 | } else {\r | |
5977 | if (c == '-') { /* Flag: left justified */\r | |
5978 | f = 2; c = *fmt++;\r | |
5979 | }\r | |
5980 | }\r | |
5981 | while (IsDigit(c)) { /* Precision */\r | |
5982 | w = w * 10 + c - '0';\r | |
5983 | c = *fmt++;\r | |
5984 | }\r | |
5985 | if (c == 'l' || c == 'L') { /* Prefix: Size is long int */\r | |
5986 | f |= 4; c = *fmt++;\r | |
5987 | }\r | |
5988 | if (!c) break;\r | |
5989 | d = c;\r | |
5990 | if (IsLower(d)) d -= 0x20;\r | |
5991 | switch (d) { /* Type is... */\r | |
5992 | case 'S' : /* String */\r | |
5993 | p = va_arg(arp, TCHAR*);\r | |
5994 | for (j = 0; p[j]; j++) ;\r | |
5995 | if (!(f & 2)) {\r | |
5996 | while (j++ < w) putc_bfd(&pb, ' ');\r | |
5997 | }\r | |
5998 | while (*p) putc_bfd(&pb, *p++);\r | |
5999 | while (j++ < w) putc_bfd(&pb, ' ');\r | |
6000 | continue;\r | |
6001 | case 'C' : /* Character */\r | |
6002 | putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;\r | |
6003 | case 'B' : /* Binary */\r | |
6004 | r = 2; break;\r | |
6005 | case 'O' : /* Octal */\r | |
6006 | r = 8; break;\r | |
6007 | case 'D' : /* Signed decimal */\r | |
6008 | case 'U' : /* Unsigned decimal */\r | |
6009 | r = 10; break;\r | |
6010 | case 'X' : /* Hexdecimal */\r | |
6011 | r = 16; break;\r | |
6012 | default: /* Unknown type (pass-through) */\r | |
6013 | putc_bfd(&pb, c); continue;\r | |
6014 | }\r | |
6015 | \r | |
6016 | /* Get an argument and put it in numeral */\r | |
6017 | v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));\r | |
6018 | if (d == 'D' && (v & 0x80000000)) {\r | |
6019 | v = 0 - v;\r | |
6020 | f |= 8;\r | |
6021 | }\r | |
6022 | i = 0;\r | |
6023 | do {\r | |
6024 | d = (TCHAR)(v % r); v /= r;\r | |
6025 | if (d > 9) d += (c == 'x') ? 0x27 : 0x07;\r | |
70702af1 L |
6026 | str[i++] = d + '0';\r |
6027 | } while (v && i < sizeof str / sizeof str[0]);\r | |
6028 | if (f & 8) str[i++] = '-';\r | |
53668523 L |
6029 | j = i; d = (f & 1) ? '0' : ' ';\r |
6030 | while (!(f & 2) && j++ < w) putc_bfd(&pb, d);\r | |
70702af1 | 6031 | do putc_bfd(&pb, str[--i]); while (i);\r |
53668523 L |
6032 | while (j++ < w) putc_bfd(&pb, d);\r |
6033 | }\r | |
6034 | \r | |
6035 | va_end(arp);\r | |
6036 | \r | |
70702af1 | 6037 | return putc_flush(&pb);\r |
53668523 L |
6038 | }\r |
6039 | \r | |
6040 | #endif /* !_FS_READONLY */\r | |
6041 | #endif /* _USE_STRFUNC */\r |