Rev 1234 Rev 1858
1 /*----------------------------------------------------------------------------/ 1 /*----------------------------------------------------------------------------/
2 / FatFs - FAT file system module R0.06 (C)ChaN, 2008 2 / FatFs - FAT file system module R0.06 (C)ChaN, 2008
3 /-----------------------------------------------------------------------------/ 3 /-----------------------------------------------------------------------------/
4 / The FatFs module is an experimenal project to implement FAT file system to 4 / The FatFs module is an experimenal project to implement FAT file system to
5 / cheap microcontrollers. This is a free software and is opened for education, 5 / cheap microcontrollers. This is a free software and is opened for education,
6 / research and development under license policy of following trems. 6 / research and development under license policy of following trems.
7 / 7 /
8 / Copyright (C) 2008, ChaN, all right reserved. 8 / Copyright (C) 2008, ChaN, all right reserved.
9 / 9 /
10 / * The FatFs module is a free software and there is no warranty. 10 / * The FatFs module is a free software and there is no warranty.
11 / * You can use, modify and/or redistribute it for personal, non-profit or 11 / * You can use, modify and/or redistribute it for personal, non-profit or
12 / commercial use without restriction under your responsibility. 12 / commercial use without restriction under your responsibility.
13 / * Redistributions of source code must retain the above copyright notice. 13 / * Redistributions of source code must retain the above copyright notice.
14 / 14 /
15 /-----------------------------------------------------------------------------/ 15 /-----------------------------------------------------------------------------/
16 / Feb 26,'06 R0.00 Prototype. 16 / Feb 26,'06 R0.00 Prototype.
17 / 17 /
18 / Apr 29,'06 R0.01 First stable version. 18 / Apr 29,'06 R0.01 First stable version.
19 / 19 /
20 / Jun 01,'06 R0.02 Added FAT12 support. 20 / Jun 01,'06 R0.02 Added FAT12 support.
21 / Removed unbuffered mode. 21 / Removed unbuffered mode.
22 / Fixed a problem on small (<32M) patition. 22 / Fixed a problem on small (<32M) patition.
23 / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). 23 / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
24 / 24 /
25 / Sep 22,'06 R0.03 Added f_rename(). 25 / Sep 22,'06 R0.03 Added f_rename().
26 / Changed option _FS_MINIMUM to _FS_MINIMIZE. 26 / Changed option _FS_MINIMUM to _FS_MINIMIZE.
27 / Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast. 27 / Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.
28 / Fixed f_mkdir() creates incorrect directory on FAT32. 28 / Fixed f_mkdir() creates incorrect directory on FAT32.
29 / 29 /
30 / Feb 04,'07 R0.04 Supported multiple drive system. 30 / Feb 04,'07 R0.04 Supported multiple drive system.
31 / Changed some interfaces for multiple drive system. 31 / Changed some interfaces for multiple drive system.
32 / Changed f_mountdrv() to f_mount(). 32 / Changed f_mountdrv() to f_mount().
33 / Added f_mkfs(). 33 / Added f_mkfs().
34 / Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive. 34 / Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.
35 / Added a capability of extending file size to f_lseek(). 35 / Added a capability of extending file size to f_lseek().
36 / Added minimization level 3. 36 / Added minimization level 3.
37 / Fixed an endian sensitive code in f_mkfs(). 37 / Fixed an endian sensitive code in f_mkfs().
38 / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. 38 / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
39 / Added FSInfo support. 39 / Added FSInfo support.
40 / Fixed DBCS name can result FR_INVALID_NAME. 40 / Fixed DBCS name can result FR_INVALID_NAME.
41 / Fixed short seek (<= csize) collapses the file object. 41 / Fixed short seek (<= csize) collapses the file object.
42 / 42 /
43 / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). 43 / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
44 / Fixed f_mkfs() on FAT32 creates incorrect FSInfo. 44 / Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
45 / Fixed f_mkdir() on FAT32 creates incorrect directory. 45 / Fixed f_mkdir() on FAT32 creates incorrect directory.
46 / Feb 03,'08 R0.05a Added f_truncate() and f_utime(). 46 / Feb 03,'08 R0.05a Added f_truncate() and f_utime().
47 / Fixed off by one error at FAT sub-type determination. 47 / Fixed off by one error at FAT sub-type determination.
48 / Fixed btr in f_read() can be mistruncated. 48 / Fixed btr in f_read() can be mistruncated.
49 / Fixed cached sector is not flushed when create and close 49 / Fixed cached sector is not flushed when create and close
50 / without write. 50 / without write.
51 / 51 /
52 / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). 52 / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
53 / Improved performance of f_lseek() on moving to the same 53 / Improved performance of f_lseek() on moving to the same
54 / or following cluster. 54 / or following cluster.
55 /---------------------------------------------------------------------------*/ 55 /---------------------------------------------------------------------------*/
56   56  
57 #include <string.h> 57 #include <string.h>
58 #include "ff.h" /* FatFs declarations */ 58 #include "ff.h" /* FatFs declarations */
59 #include "diskio.h" /* Include file for user provided disk functions */ 59 #include "diskio.h" /* Include file for user provided disk functions */
60   60  
61   61  
62 /*-------------------------------------------------------------------------- 62 /*--------------------------------------------------------------------------
63   63  
64 Module Private Functions 64 Module Private Functions
65   65  
66 ---------------------------------------------------------------------------*/ 66 ---------------------------------------------------------------------------*/
67   67  
68 static 68 static
69 FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */ 69 FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
70 static 70 static
71 WORD fsid; /* File system mount ID */ 71 WORD fsid; /* File system mount ID */
72   72  
73   73  
74   74  
75 /*-----------------------------------------------------------------------*/ 75 /*-----------------------------------------------------------------------*/
76 /* Change window offset */ 76 /* Change window offset */
77 /*-----------------------------------------------------------------------*/ 77 /*-----------------------------------------------------------------------*/
78   78  
79 static 79 static
80 BOOL move_window ( /* TRUE: successful, FALSE: failed */ 80 BOOL move_window ( /* TRUE: successful, FALSE: failed */
81 FATFS *fs, /* File system object */ 81 FATFS *fs, /* File system object */
82 DWORD sector /* Sector number to make apperance in the fs->win[] */ 82 DWORD sector /* Sector number to make apperance in the fs->win[] */
83 ) /* Move to zero only writes back dirty window */ 83 ) /* Move to zero only writes back dirty window */
84 { 84 {
85 DWORD wsect; 85 DWORD wsect;
86   86  
87   87  
88 wsect = fs->winsect; 88 wsect = fs->winsect;
89 if (wsect != sector) { /* Changed current window */ 89 if (wsect != sector) { /* Changed current window */
90 #if !_FS_READONLY 90 #if !_FS_READONLY
91 BYTE n; 91 BYTE n;
92 if (fs->winflag) { /* Write back dirty window if needed */ 92 if (fs->winflag) { /* Write back dirty window if needed */
93 if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK) 93 if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
94 return FALSE; 94 return FALSE;
95 fs->winflag = 0; 95 fs->winflag = 0;
96 if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */ 96 if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */
97 for (n = fs->n_fats; n >= 2; n--) { /* Refrect the change to FAT copy */ 97 for (n = fs->n_fats; n >= 2; n--) { /* Refrect the change to FAT copy */
98 wsect += fs->sects_fat; 98 wsect += fs->sects_fat;
99 disk_write(fs->drive, fs->win, wsect, 1); 99 disk_write(fs->drive, fs->win, wsect, 1);
100 } 100 }
101 } 101 }
102 } 102 }
103 #endif 103 #endif
104 if (sector) { 104 if (sector) {
105 if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK) 105 if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)
106 return FALSE; 106 return FALSE;
107 fs->winsect = sector; 107 fs->winsect = sector;
108 } 108 }
109 } 109 }
110 return TRUE; 110 return TRUE;
111 } 111 }
112   112  
113   113  
114   114  
115   115  
116 /*-----------------------------------------------------------------------*/ 116 /*-----------------------------------------------------------------------*/
117 /* Clean-up cached data */ 117 /* Clean-up cached data */
118 /*-----------------------------------------------------------------------*/ 118 /*-----------------------------------------------------------------------*/
119   119  
120 #if !_FS_READONLY 120 #if !_FS_READONLY
121 static 121 static
122 FRESULT sync ( /* FR_OK: successful, FR_RW_ERROR: failed */ 122 FRESULT sync ( /* FR_OK: successful, FR_RW_ERROR: failed */
123 FATFS *fs /* File system object */ 123 FATFS *fs /* File system object */
124 ) 124 )
125 { 125 {
126 fs->winflag = 1; 126 fs->winflag = 1;
127 if (!move_window(fs, 0)) return FR_RW_ERROR; 127 if (!move_window(fs, 0)) return FR_RW_ERROR;
128 #if _USE_FSINFO 128 #if _USE_FSINFO
129 /* Update FSInfo sector if needed */ 129 /* Update FSInfo sector if needed */
130 if (fs->fs_type == FS_FAT32 && fs->fsi_flag) { 130 if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
131 fs->winsect = 0; 131 fs->winsect = 0;
132 memset(fs->win, 0, 512); 132 memset(fs->win, 0, 512);
133 ST_WORD(&fs->win[BS_55AA], 0xAA55); 133 ST_WORD(&fs->win[BS_55AA], 0xAA55);
134 ST_DWORD(&fs->win[FSI_LeadSig], 0x41615252); 134 ST_DWORD(&fs->win[FSI_LeadSig], 0x41615252);
135 ST_DWORD(&fs->win[FSI_StrucSig], 0x61417272); 135 ST_DWORD(&fs->win[FSI_StrucSig], 0x61417272);
136 ST_DWORD(&fs->win[FSI_Free_Count], fs->free_clust); 136 ST_DWORD(&fs->win[FSI_Free_Count], fs->free_clust);
137 ST_DWORD(&fs->win[FSI_Nxt_Free], fs->last_clust); 137 ST_DWORD(&fs->win[FSI_Nxt_Free], fs->last_clust);
138 disk_write(fs->drive, fs->win, fs->fsi_sector, 1); 138 disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
139 fs->fsi_flag = 0; 139 fs->fsi_flag = 0;
140 } 140 }
141 #endif 141 #endif
142 /* Make sure that no pending write process in the physical drive */ 142 /* Make sure that no pending write process in the physical drive */
143 if (disk_ioctl(fs->drive, CTRL_SYNC, NULL) != RES_OK) 143 if (disk_ioctl(fs->drive, CTRL_SYNC, NULL) != RES_OK)
144 return FR_RW_ERROR; 144 return FR_RW_ERROR;
145 return FR_OK; 145 return FR_OK;
146 } 146 }
147 #endif 147 #endif
148   148  
149   149  
150   150  
151   151  
152 /*-----------------------------------------------------------------------*/ 152 /*-----------------------------------------------------------------------*/
153 /* Get a cluster status */ 153 /* Get a cluster status */
154 /*-----------------------------------------------------------------------*/ 154 /*-----------------------------------------------------------------------*/
155   155  
156 static 156 static
157 DWORD get_cluster ( /* 0,>=2: successful, 1: failed */ 157 DWORD get_cluster ( /* 0,>=2: successful, 1: failed */
158 FATFS *fs, /* File system object */ 158 FATFS *fs, /* File system object */
159 DWORD clust /* Cluster# to get the link information */ 159 DWORD clust /* Cluster# to get the link information */
160 ) 160 )
161 { 161 {
162 WORD wc, bc; 162 WORD wc, bc;
163 DWORD fatsect; 163 DWORD fatsect;
164   164  
165   165  
166 if (clust >= 2 && clust < fs->max_clust) { /* Is it a valid cluster#? */ 166 if (clust >= 2 && clust < fs->max_clust) { /* Is it a valid cluster#? */
167 fatsect = fs->fatbase; 167 fatsect = fs->fatbase;
168 switch (fs->fs_type) { 168 switch (fs->fs_type) {
169 case FS_FAT12 : 169 case FS_FAT12 :
170 bc = (WORD)clust * 3 / 2; 170 bc = (WORD)clust * 3 / 2;
171 if (!move_window(fs, fatsect + (bc / SS(fs)))) break; 171 if (!move_window(fs, fatsect + (bc / SS(fs)))) break;
172 wc = fs->win[bc & (SS(fs) - 1)]; bc++; 172 wc = fs->win[bc & (SS(fs) - 1)]; bc++;
173 if (!move_window(fs, fatsect + (bc / SS(fs)))) break; 173 if (!move_window(fs, fatsect + (bc / SS(fs)))) break;
174 wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8; 174 wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
175 return (clust & 1) ? (wc >> 4) : (wc & 0xFFF); 175 return (clust & 1) ? (wc >> 4) : (wc & 0xFFF);
176   176  
177 case FS_FAT16 : 177 case FS_FAT16 :
178 if (!move_window(fs, fatsect + (clust / (SS(fs) / 2)))) break; 178 if (!move_window(fs, fatsect + (clust / (SS(fs) / 2)))) break;
179 return LD_WORD(&fs->win[((WORD)clust * 2) & (SS(fs) - 1)]); 179 return LD_WORD(&fs->win[((WORD)clust * 2) & (SS(fs) - 1)]);
180   180  
181 case FS_FAT32 : 181 case FS_FAT32 :
182 if (!move_window(fs, fatsect + (clust / (SS(fs) / 4)))) break; 182 if (!move_window(fs, fatsect + (clust / (SS(fs) / 4)))) break;
183 return LD_DWORD(&fs->win[((WORD)clust * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF; 183 return LD_DWORD(&fs->win[((WORD)clust * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
184 } 184 }
185 } 185 }
186   186  
187 return 1; /* Out of cluster range, or an error occured */ 187 return 1; /* Out of cluster range, or an error occured */
188 } 188 }
189   189  
190   190  
191   191  
192   192  
193 /*-----------------------------------------------------------------------*/ 193 /*-----------------------------------------------------------------------*/
194 /* Change a cluster status */ 194 /* Change a cluster status */
195 /*-----------------------------------------------------------------------*/ 195 /*-----------------------------------------------------------------------*/
196   196  
197 #if !_FS_READONLY 197 #if !_FS_READONLY
198 static 198 static
199 BOOL put_cluster ( /* TRUE: successful, FALSE: failed */ 199 BOOL put_cluster ( /* TRUE: successful, FALSE: failed */
200 FATFS *fs, /* File system object */ 200 FATFS *fs, /* File system object */
201 DWORD clust, /* Cluster# to change (must be 2 to fs->max_clust-1) */ 201 DWORD clust, /* Cluster# to change (must be 2 to fs->max_clust-1) */
202 DWORD val /* New value to mark the cluster */ 202 DWORD val /* New value to mark the cluster */
203 ) 203 )
204 { 204 {
205 WORD bc; 205 WORD bc;
206 BYTE *p; 206 BYTE *p;
207 DWORD fatsect; 207 DWORD fatsect;
208   208  
209   209  
210 fatsect = fs->fatbase; 210 fatsect = fs->fatbase;
211 switch (fs->fs_type) { 211 switch (fs->fs_type) {
212 case FS_FAT12 : 212 case FS_FAT12 :
213 bc = (WORD)clust * 3 / 2; 213 bc = (WORD)clust * 3 / 2;
214 if (!move_window(fs, fatsect + (bc / SS(fs)))) return FALSE; 214 if (!move_window(fs, fatsect + (bc / SS(fs)))) return FALSE;
215 p = &fs->win[bc & (SS(fs) - 1)]; 215 p = &fs->win[bc & (SS(fs) - 1)];
216 *p = (clust & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; 216 *p = (clust & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
217 bc++; 217 bc++;
218 fs->winflag = 1; 218 fs->winflag = 1;
219 if (!move_window(fs, fatsect + (bc / SS(fs)))) return FALSE; 219 if (!move_window(fs, fatsect + (bc / SS(fs)))) return FALSE;
220 p = &fs->win[bc & (SS(fs) - 1)]; 220 p = &fs->win[bc & (SS(fs) - 1)];
221 *p = (clust & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); 221 *p = (clust & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
222 break; 222 break;
223   223  
224 case FS_FAT16 : 224 case FS_FAT16 :
225 if (!move_window(fs, fatsect + (clust / (SS(fs) / 2)))) return FALSE; 225 if (!move_window(fs, fatsect + (clust / (SS(fs) / 2)))) return FALSE;
226 ST_WORD(&fs->win[((WORD)clust * 2) & (SS(fs) - 1)], (WORD)val); 226 ST_WORD(&fs->win[((WORD)clust * 2) & (SS(fs) - 1)], (WORD)val);
227 break; 227 break;
228   228  
229 case FS_FAT32 : 229 case FS_FAT32 :
230 if (!move_window(fs, fatsect + (clust / (SS(fs) / 4)))) return FALSE; 230 if (!move_window(fs, fatsect + (clust / (SS(fs) / 4)))) return FALSE;
231 ST_DWORD(&fs->win[((WORD)clust * 4) & (SS(fs) - 1)], val); 231 ST_DWORD(&fs->win[((WORD)clust * 4) & (SS(fs) - 1)], val);
232 break; 232 break;
233   233  
234 default : 234 default :
235 return FALSE; 235 return FALSE;
236 } 236 }
237 fs->winflag = 1; 237 fs->winflag = 1;
238 return TRUE; 238 return TRUE;
239 } 239 }
240 #endif /* !_FS_READONLY */ 240 #endif /* !_FS_READONLY */
241   241  
242   242  
243   243  
244   244  
245 /*-----------------------------------------------------------------------*/ 245 /*-----------------------------------------------------------------------*/
246 /* Remove a cluster chain */ 246 /* Remove a cluster chain */
247 /*-----------------------------------------------------------------------*/ 247 /*-----------------------------------------------------------------------*/
248   248  
249 #if !_FS_READONLY 249 #if !_FS_READONLY
250 static 250 static
251 BOOL remove_chain ( /* TRUE: successful, FALSE: failed */ 251 BOOL remove_chain ( /* TRUE: successful, FALSE: failed */
252 FATFS *fs, /* File system object */ 252 FATFS *fs, /* File system object */
253 DWORD clust /* Cluster# to remove chain from */ 253 DWORD clust /* Cluster# to remove chain from */
254 ) 254 )
255 { 255 {
256 DWORD nxt; 256 DWORD nxt;
257   257  
258   258  
259 while (clust >= 2 && clust < fs->max_clust) { 259 while (clust >= 2 && clust < fs->max_clust) {
260 nxt = get_cluster(fs, clust); 260 nxt = get_cluster(fs, clust);
261 if (nxt == 1) return FALSE; 261 if (nxt == 1) return FALSE;
262 if (!put_cluster(fs, clust, 0)) return FALSE; 262 if (!put_cluster(fs, clust, 0)) return FALSE;
263 if (fs->free_clust != 0xFFFFFFFF) { 263 if (fs->free_clust != 0xFFFFFFFF) {
264 fs->free_clust++; 264 fs->free_clust++;
265 #if _USE_FSINFO 265 #if _USE_FSINFO
266 fs->fsi_flag = 1; 266 fs->fsi_flag = 1;
267 #endif 267 #endif
268 } 268 }
269 clust = nxt; 269 clust = nxt;
270 } 270 }
271 return TRUE; 271 return TRUE;
272 } 272 }
273 #endif 273 #endif
274   274  
275   275  
276   276  
277   277  
278 /*-----------------------------------------------------------------------*/ 278 /*-----------------------------------------------------------------------*/
279 /* Stretch or create a cluster chain */ 279 /* Stretch or create a cluster chain */
280 /*-----------------------------------------------------------------------*/ 280 /*-----------------------------------------------------------------------*/
281   281  
282 #if !_FS_READONLY 282 #if !_FS_READONLY
283 static 283 static
284 DWORD create_chain ( /* 0: No free cluster, 1: Error, >=2: New cluster number */ 284 DWORD create_chain ( /* 0: No free cluster, 1: Error, >=2: New cluster number */
285 FATFS *fs, /* File system object */ 285 FATFS *fs, /* File system object */
286 DWORD clust /* Cluster# to stretch, 0 means create new */ 286 DWORD clust /* Cluster# to stretch, 0 means create new */
287 ) 287 )
288 { 288 {
289 DWORD cstat, ncl, scl, mcl = fs->max_clust; 289 DWORD cstat, ncl, scl, mcl = fs->max_clust;
290   290  
291   291  
292 if (clust == 0) { /* Create new chain */ 292 if (clust == 0) { /* Create new chain */
293 scl = fs->last_clust; /* Get suggested start point */ 293 scl = fs->last_clust; /* Get suggested start point */
294 if (scl == 0 || scl >= mcl) scl = 1; 294 if (scl == 0 || scl >= mcl) scl = 1;
295 } 295 }
296 else { /* Stretch existing chain */ 296 else { /* Stretch existing chain */
297 cstat = get_cluster(fs, clust); /* Check the cluster status */ 297 cstat = get_cluster(fs, clust); /* Check the cluster status */
298 if (cstat < 2) return 1; /* It is an invalid cluster */ 298 if (cstat < 2) return 1; /* It is an invalid cluster */
299 if (cstat < mcl) return cstat; /* It is already followed by next cluster */ 299 if (cstat < mcl) return cstat; /* It is already followed by next cluster */
300 scl = clust; 300 scl = clust;
301 } 301 }
302   302  
303 ncl = scl; /* Start cluster */ 303 ncl = scl; /* Start cluster */
304 for (;;) { 304 for (;;) {
305 ncl++; /* Next cluster */ 305 ncl++; /* Next cluster */
306 if (ncl >= mcl) { /* Wrap around */ 306 if (ncl >= mcl) { /* Wrap around */
307 ncl = 2; 307 ncl = 2;
308 if (ncl > scl) return 0; /* No free custer */ 308 if (ncl > scl) return 0; /* No free custer */
309 } 309 }
310 cstat = get_cluster(fs, ncl); /* Get the cluster status */ 310 cstat = get_cluster(fs, ncl); /* Get the cluster status */
311 if (cstat == 0) break; /* Found a free cluster */ 311 if (cstat == 0) break; /* Found a free cluster */
312 if (cstat == 1) return 1; /* Any error occured */ 312 if (cstat == 1) return 1; /* Any error occured */
313 if (ncl == scl) return 0; /* No free custer */ 313 if (ncl == scl) return 0; /* No free custer */
314 } 314 }
315   315  
316 if (!put_cluster(fs, ncl, 0x0FFFFFFF)) return 1; /* Mark the new cluster "in use" */ 316 if (!put_cluster(fs, ncl, 0x0FFFFFFF)) return 1; /* Mark the new cluster "in use" */
317 if (clust != 0 && !put_cluster(fs, clust, ncl)) return 1; /* Link it to previous one if needed */ 317 if (clust != 0 && !put_cluster(fs, clust, ncl)) return 1; /* Link it to previous one if needed */
318   318  
319 fs->last_clust = ncl; /* Update fsinfo */ 319 fs->last_clust = ncl; /* Update fsinfo */
320 if (fs->free_clust != 0xFFFFFFFF) { 320 if (fs->free_clust != 0xFFFFFFFF) {
321 fs->free_clust--; 321 fs->free_clust--;
322 #if _USE_FSINFO 322 #if _USE_FSINFO
323 fs->fsi_flag = 1; 323 fs->fsi_flag = 1;
324 #endif 324 #endif
325 } 325 }
326   326  
327 return ncl; /* Return new cluster number */ 327 return ncl; /* Return new cluster number */
328 } 328 }
329 #endif /* !_FS_READONLY */ 329 #endif /* !_FS_READONLY */
330   330  
331   331  
332   332  
333   333  
334 /*-----------------------------------------------------------------------*/ 334 /*-----------------------------------------------------------------------*/
335 /* Get sector# from cluster# */ 335 /* Get sector# from cluster# */
336 /*-----------------------------------------------------------------------*/ 336 /*-----------------------------------------------------------------------*/
337   337  
338 static 338 static
339 DWORD clust2sect ( /* !=0: sector number, 0: failed - invalid cluster# */ 339 DWORD clust2sect ( /* !=0: sector number, 0: failed - invalid cluster# */
340 FATFS *fs, /* File system object */ 340 FATFS *fs, /* File system object */
341 DWORD clust /* Cluster# to be converted */ 341 DWORD clust /* Cluster# to be converted */
342 ) 342 )
343 { 343 {
344 clust -= 2; 344 clust -= 2;
345 if (clust >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */ 345 if (clust >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
346 return clust * fs->csize + fs->database; 346 return clust * fs->csize + fs->database;
347 } 347 }
348   348  
349   349  
350   350  
351   351  
352 /*-----------------------------------------------------------------------*/ 352 /*-----------------------------------------------------------------------*/
353 /* Move directory pointer to next */ 353 /* Move directory pointer to next */
354 /*-----------------------------------------------------------------------*/ 354 /*-----------------------------------------------------------------------*/
355   355  
356 static 356 static
357 BOOL next_dir_entry ( /* TRUE: successful, FALSE: could not move next */ 357 BOOL next_dir_entry ( /* TRUE: successful, FALSE: could not move next */
358 DIR *dj /* Pointer to directory object */ 358 DIR *dj /* Pointer to directory object */
359 ) 359 )
360 { 360 {
361 DWORD clust; 361 DWORD clust;
362 WORD idx; 362 WORD idx;
363   363  
364   364  
365 idx = dj->index + 1; 365 idx = dj->index + 1;
366 if ((idx & ((SS(dj->fs) - 1) / 32)) == 0) { /* Table sector changed? */ 366 if ((idx & ((SS(dj->fs) - 1) / 32)) == 0) { /* Table sector changed? */
367 dj->sect++; /* Next sector */ 367 dj->sect++; /* Next sector */
368 if (dj->clust == 0) { /* In static table */ 368 if (dj->clust == 0) { /* In static table */
369 if (idx >= dj->fs->n_rootdir) return FALSE; /* Reached to end of table */ 369 if (idx >= dj->fs->n_rootdir) return FALSE; /* Reached to end of table */
370 } else { /* In dynamic table */ 370 } else { /* In dynamic table */
371 if (((idx / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */ 371 if (((idx / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
372 clust = get_cluster(dj->fs, dj->clust); /* Get next cluster */ 372 clust = get_cluster(dj->fs, dj->clust); /* Get next cluster */
373 if (clust < 2 || clust >= dj->fs->max_clust) /* Reached to end of table */ 373 if (clust < 2 || clust >= dj->fs->max_clust) /* Reached to end of table */
374 return FALSE; 374 return FALSE;
375 dj->clust = clust; /* Initialize for new cluster */ 375 dj->clust = clust; /* Initialize for new cluster */
376 dj->sect = clust2sect(dj->fs, clust); 376 dj->sect = clust2sect(dj->fs, clust);
377 } 377 }
378 } 378 }
379 } 379 }
380 dj->index = idx; /* Lower several bits of dj->index indicates offset in dj->sect */ 380 dj->index = idx; /* Lower several bits of dj->index indicates offset in dj->sect */
381 return TRUE; 381 return TRUE;
382 } 382 }
383   383  
384   384  
385   385  
386   386  
387 /*-----------------------------------------------------------------------*/ 387 /*-----------------------------------------------------------------------*/
388 /* Get file status from directory entry */ 388 /* Get file status from directory entry */
389 /*-----------------------------------------------------------------------*/ 389 /*-----------------------------------------------------------------------*/
390   390  
391 #if _FS_MINIMIZE <= 1 391 #if _FS_MINIMIZE <= 1
392 static 392 static
393 void get_fileinfo ( /* No return code */ 393 void get_fileinfo ( /* No return code */
394 FILINFO *finfo, /* Ptr to store the file information */ 394 FILINFO *finfo, /* Ptr to store the file information */
395 const BYTE *dir /* Ptr to the directory entry */ 395 const BYTE *dir /* Ptr to the directory entry */
396 ) 396 )
397 { 397 {
398 BYTE n, c, a; 398 BYTE n, c, a;
399 char *p; 399 char *p;
400   400  
401   401  
402 p = &finfo->fname[0]; 402 p = &finfo->fname[0];
403 a = _USE_NTFLAG ? dir[DIR_NTres] : 0; /* NT flag */ 403 a = _USE_NTFLAG ? dir[DIR_NTres] : 0; /* NT flag */
404 for (n = 0; n < 8; n++) { /* Convert file name (body) */ 404 for (n = 0; n < 8; n++) { /* Convert file name (body) */
405 c = dir[n]; 405 c = dir[n];
406 if (c == ' ') break; 406 if (c == ' ') break;
407 if (c == 0x05) c = 0xE5; 407 if (c == 0x05) c = 0xE5;
408 if (a & 0x08 && c >= 'A' && c <= 'Z') c += 0x20; 408 if (a & 0x08 && c >= 'A' && c <= 'Z') c += 0x20;
409 *p++ = c; 409 *p++ = c;
410 } 410 }
411 if (dir[8] != ' ') { /* Convert file name (extension) */ 411 if (dir[8] != ' ') { /* Convert file name (extension) */
412 *p++ = '.'; 412 *p++ = '.';
413 for (n = 8; n < 11; n++) { 413 for (n = 8; n < 11; n++) {
414 c = dir[n]; 414 c = dir[n];
415 if (c == ' ') break; 415 if (c == ' ') break;
416 if (a & 0x10 && c >= 'A' && c <= 'Z') c += 0x20; 416 if (a & 0x10 && c >= 'A' && c <= 'Z') c += 0x20;
417 *p++ = c; 417 *p++ = c;
418 } 418 }
419 } 419 }
420 *p = '\0'; 420 *p = '\0';
421   421  
422 finfo->fattrib = dir[DIR_Attr]; /* Attribute */ 422 finfo->fattrib = dir[DIR_Attr]; /* Attribute */
423 finfo->fsize = LD_DWORD(&dir[DIR_FileSize]); /* Size */ 423 finfo->fsize = LD_DWORD(&dir[DIR_FileSize]); /* Size */
424 finfo->fdate = LD_WORD(&dir[DIR_WrtDate]); /* Date */ 424 finfo->fdate = LD_WORD(&dir[DIR_WrtDate]); /* Date */
425 finfo->ftime = LD_WORD(&dir[DIR_WrtTime]); /* Time */ 425 finfo->ftime = LD_WORD(&dir[DIR_WrtTime]); /* Time */
426 } 426 }
427 #endif /* _FS_MINIMIZE <= 1 */ 427 #endif /* _FS_MINIMIZE <= 1 */
428   428  
429   429  
430   430  
431   431  
432 /*-----------------------------------------------------------------------*/ 432 /*-----------------------------------------------------------------------*/
433 /* Pick a paragraph and create the name in format of directory entry */ 433 /* Pick a paragraph and create the name in format of directory entry */
434 /*-----------------------------------------------------------------------*/ 434 /*-----------------------------------------------------------------------*/
435   435  
436 static 436 static
437 char make_dirfile ( /* 1: error - detected an invalid format, '\0'or'/': next character */ 437 char make_dirfile ( /* 1: error - detected an invalid format, '\0'or'/': next character */
438 const char **path, /* Pointer to the file path pointer */ 438 const char **path, /* Pointer to the file path pointer */
439 char *dirname /* Pointer to directory name buffer {Name(8), Ext(3), NT flag(1)} */ 439 char *dirname /* Pointer to directory name buffer {Name(8), Ext(3), NT flag(1)} */
440 ) 440 )
441 { 441 {
442 BYTE n, t, c, a, b; 442 BYTE n, t, c, a, b;
443   443  
444   444  
445 memset(dirname, ' ', 8+3); /* Fill buffer with spaces */ 445 memset(dirname, ' ', 8+3); /* Fill buffer with spaces */
446 a = 0; b = 0x18; /* NT flag */ 446 a = 0; b = 0x18; /* NT flag */
447 n = 0; t = 8; 447 n = 0; t = 8;
448 for (;;) { 448 for (;;) {
449 c = *(*path)++; 449 c = *(*path)++;
450 if (c == '\0' || c == '/') { /* Reached to end of str or directory separator */ 450 if (c == '\0' || c == '/') { /* Reached to end of str or directory separator */
451 if (n == 0) break; 451 if (n == 0) break;
452 dirname[11] = _USE_NTFLAG ? (a & b) : 0; 452 dirname[11] = _USE_NTFLAG ? (a & b) : 0;
453 return c; 453 return c;
454 } 454 }
455 if (c <= ' ' || c == 0x7F) break; /* Reject invisible chars */ 455 if (c <= ' ' || c == 0x7F) break; /* Reject invisible chars */
456 if (c == '.') { 456 if (c == '.') {
457 if (!(a & 1) && n >= 1 && n <= 8) { /* Enter extension part */ 457 if (!(a & 1) && n >= 1 && n <= 8) { /* Enter extension part */
458 n = 8; t = 11; continue; 458 n = 8; t = 11; continue;
459 } 459 }
460 break; 460 break;
461 } 461 }
462 if (_USE_SJIS && 462 if (_USE_SJIS &&
463 ((c >= 0x81 && c <= 0x9F) || /* Accept S-JIS code */ 463 ((c >= 0x81 && c <= 0x9F) || /* Accept S-JIS code */
464 (c >= 0xE0 && c <= 0xFC))) { 464 (c >= 0xE0 && c <= 0xFC))) {
465 if (n == 0 && c == 0xE5) /* Change heading \xE5 to \x05 */ 465 if (n == 0 && c == 0xE5) /* Change heading \xE5 to \x05 */
466 c = 0x05; 466 c = 0x05;
467 a ^= 0x01; goto md_l2; 467 a ^= 0x01; goto md_l2;
468 } 468 }
469 if (c == '"') break; /* Reject " */ 469 if (c == '"') break; /* Reject " */
470 if (c <= ')') goto md_l1; /* Accept ! # $ % & ' ( ) */ 470 if (c <= ')') goto md_l1; /* Accept ! # $ % & ' ( ) */
471 if (c <= ',') break; /* Reject * + , */ 471 if (c <= ',') break; /* Reject * + , */
472 if (c <= '9') goto md_l1; /* Accept - 0-9 */ 472 if (c <= '9') goto md_l1; /* Accept - 0-9 */
473 if (c <= '?') break; /* Reject : ; < = > ? */ 473 if (c <= '?') break; /* Reject : ; < = > ? */
474 if (!(a & 1)) { /* These checks are not applied to S-JIS 2nd byte */ 474 if (!(a & 1)) { /* These checks are not applied to S-JIS 2nd byte */
475 if (c == '|') break; /* Reject | */ 475 if (c == '|') break; /* Reject | */
476 if (c >= '[' && c <= ']') break;/* Reject [ \ ] */ 476 if (c >= '[' && c <= ']') break;/* Reject [ \ ] */
477 if (_USE_NTFLAG && c >= 'A' && c <= 'Z') 477 if (_USE_NTFLAG && c >= 'A' && c <= 'Z')
478 (t == 8) ? (b &= 0xF7) : (b &= 0xEF); 478 (t == 8) ? (b &= 0xF7) : (b &= 0xEF);
479 if (c >= 'a' && c <= 'z') { /* Convert to upper case */ 479 if (c >= 'a' && c <= 'z') { /* Convert to upper case */
480 c -= 0x20; 480 c -= 0x20;
481 if (_USE_NTFLAG) (t == 8) ? (a |= 0x08) : (a |= 0x10); 481 if (_USE_NTFLAG) (t == 8) ? (a |= 0x08) : (a |= 0x10);
482 } 482 }
483 } 483 }
484 md_l1: 484 md_l1:
485 a &= 0xFE; 485 a &= 0xFE;
486 md_l2: 486 md_l2:
487 if (n >= t) break; 487 if (n >= t) break;
488 dirname[n++] = c; 488 dirname[n++] = c;
489 } 489 }
490 return 1; 490 return 1;
491 } 491 }
492   492  
493   493  
494   494  
495   495  
496 /*-----------------------------------------------------------------------*/ 496 /*-----------------------------------------------------------------------*/
497 /* Trace a file path */ 497 /* Trace a file path */
498 /*-----------------------------------------------------------------------*/ 498 /*-----------------------------------------------------------------------*/
499   499  
500 static 500 static
501 FRESULT trace_path ( /* FR_OK(0): successful, !=0: error code */ 501 FRESULT trace_path ( /* FR_OK(0): successful, !=0: error code */
502 DIR *dj, /* Pointer to directory object to return last directory */ 502 DIR *dj, /* Pointer to directory object to return last directory */
503 char *fn, /* Pointer to last segment name to return {file(8),ext(3),attr(1)} */ 503 char *fn, /* Pointer to last segment name to return {file(8),ext(3),attr(1)} */
504 const char *path, /* Full-path string to trace a file or directory */ 504 const char *path, /* Full-path string to trace a file or directory */
505 BYTE **dir /* Pointer to pointer to found entry to retutn */ 505 BYTE **dir /* Pointer to pointer to found entry to retutn */
506 ) 506 )
507 { 507 {
508 DWORD clust; 508 DWORD clust;
509 char ds; 509 char ds;
510 BYTE *dptr = NULL; 510 BYTE *dptr = NULL;
511 FATFS *fs = dj->fs; 511 FATFS *fs = dj->fs;
512   512  
513   513  
514 /* Initialize directory object */ 514 /* Initialize directory object */
515 clust = fs->dirbase; 515 clust = fs->dirbase;
516 if (fs->fs_type == FS_FAT32) { 516 if (fs->fs_type == FS_FAT32) {
517 dj->clust = dj->sclust = clust; 517 dj->clust = dj->sclust = clust;
518 dj->sect = clust2sect(fs, clust); 518 dj->sect = clust2sect(fs, clust);
519 } else { 519 } else {
520 dj->clust = dj->sclust = 0; 520 dj->clust = dj->sclust = 0;
521 dj->sect = clust; 521 dj->sect = clust;
522 } 522 }
523 dj->index = 0; 523 dj->index = 0;
524   524  
525 if (*path == '\0') { /* Null path means the root directory */ 525 if (*path == '\0') { /* Null path means the root directory */
526 *dir = NULL; return FR_OK; 526 *dir = NULL; return FR_OK;
527 } 527 }
528   528  
529 for (;;) { 529 for (;;) {
530 ds = make_dirfile(&path, fn); /* Get a paragraph into fn[] */ 530 ds = make_dirfile(&path, fn); /* Get a paragraph into fn[] */
531 if (ds == 1) return FR_INVALID_NAME; 531 if (ds == 1) return FR_INVALID_NAME;
532 for (;;) { 532 for (;;) {
533 if (!move_window(fs, dj->sect)) return FR_RW_ERROR; 533 if (!move_window(fs, dj->sect)) return FR_RW_ERROR;
534 dptr = &fs->win[(dj->index & ((SS(fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */ 534 dptr = &fs->win[(dj->index & ((SS(fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */
535 if (dptr[DIR_Name] == 0) /* Has it reached to end of dir? */ 535 if (dptr[DIR_Name] == 0) /* Has it reached to end of dir? */
536 return !ds ? FR_NO_FILE : FR_NO_PATH; 536 return !ds ? FR_NO_FILE : FR_NO_PATH;
537 if (dptr[DIR_Name] != 0xE5 /* Matched? */ 537 if (dptr[DIR_Name] != 0xE5 /* Matched? */
538 && !(dptr[DIR_Attr] & AM_VOL) 538 && !(dptr[DIR_Attr] & AM_VOL)
539 && !memcmp(&dptr[DIR_Name], fn, 8+3) ) break; 539 && !memcmp(&dptr[DIR_Name], fn, 8+3) ) break;
540 if (!next_dir_entry(dj)) /* Next directory pointer */ 540 if (!next_dir_entry(dj)) /* Next directory pointer */
541 return !ds ? FR_NO_FILE : FR_NO_PATH; 541 return !ds ? FR_NO_FILE : FR_NO_PATH;
542 } 542 }
543 if (!ds) { *dir = dptr; return FR_OK; } /* Matched with end of path */ 543 if (!ds) { *dir = dptr; return FR_OK; } /* Matched with end of path */
544 if (!(dptr[DIR_Attr] & AM_DIR)) return FR_NO_PATH; /* Cannot trace because it is a file */ 544 if (!(dptr[DIR_Attr] & AM_DIR)) return FR_NO_PATH; /* Cannot trace because it is a file */
545 clust = ((DWORD)LD_WORD(&dptr[DIR_FstClusHI]) << 16) | LD_WORD(&dptr[DIR_FstClusLO]); /* Get cluster# of the directory */ 545 clust = ((DWORD)LD_WORD(&dptr[DIR_FstClusHI]) << 16) | LD_WORD(&dptr[DIR_FstClusLO]); /* Get cluster# of the directory */
546 dj->clust = dj->sclust = clust; /* Restart scanning at the new directory */ 546 dj->clust = dj->sclust = clust; /* Restart scanning at the new directory */
547 dj->sect = clust2sect(fs, clust); 547 dj->sect = clust2sect(fs, clust);
548 dj->index = 2; 548 dj->index = 2;
549 } 549 }
550 } 550 }
551   551  
552   552  
553   553  
554   554  
555 /*-----------------------------------------------------------------------*/ 555 /*-----------------------------------------------------------------------*/
556 /* Reserve a directory entry */ 556 /* Reserve a directory entry */
557 /*-----------------------------------------------------------------------*/ 557 /*-----------------------------------------------------------------------*/
558   558  
559 #if !_FS_READONLY 559 #if !_FS_READONLY
560 static 560 static
561 FRESULT reserve_direntry ( /* FR_OK: successful, FR_DENIED: no free entry, FR_RW_ERROR: a disk error occured */ 561 FRESULT reserve_direntry ( /* FR_OK: successful, FR_DENIED: no free entry, FR_RW_ERROR: a disk error occured */
562 DIR *dj, /* Target directory to create new entry */ 562 DIR *dj, /* Target directory to create new entry */
563 BYTE **dir /* Pointer to pointer to created entry to retutn */ 563 BYTE **dir /* Pointer to pointer to created entry to retutn */
564 ) 564 )
565 { 565 {
566 DWORD clust, sector; 566 DWORD clust, sector;
567 BYTE c, n, *dptr; 567 BYTE c, n, *dptr;
568 FATFS *fs = dj->fs; 568 FATFS *fs = dj->fs;
569   569  
570   570  
571 /* Re-initialize directory object */ 571 /* Re-initialize directory object */
572 clust = dj->sclust; 572 clust = dj->sclust;
573 if (clust != 0) { /* Dyanmic directory table */ 573 if (clust != 0) { /* Dyanmic directory table */
574 dj->clust = clust; 574 dj->clust = clust;
575 dj->sect = clust2sect(fs, clust); 575 dj->sect = clust2sect(fs, clust);
576 } else { /* Static directory table */ 576 } else { /* Static directory table */
577 dj->sect = fs->dirbase; 577 dj->sect = fs->dirbase;
578 } 578 }
579 dj->index = 0; 579 dj->index = 0;
580   580  
581 do { 581 do {
582 if (!move_window(fs, dj->sect)) return FR_RW_ERROR; 582 if (!move_window(fs, dj->sect)) return FR_RW_ERROR;
583 dptr = &fs->win[(dj->index & ((SS(dj->fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */ 583 dptr = &fs->win[(dj->index & ((SS(dj->fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */
584 c = dptr[DIR_Name]; 584 c = dptr[DIR_Name];
585 if (c == 0 || c == 0xE5) { /* Found an empty entry */ 585 if (c == 0 || c == 0xE5) { /* Found an empty entry */
586 *dir = dptr; return FR_OK; 586 *dir = dptr; return FR_OK;
587 } 587 }
588 } while (next_dir_entry(dj)); /* Next directory pointer */ 588 } while (next_dir_entry(dj)); /* Next directory pointer */
589 /* Reached to end of the directory table */ 589 /* Reached to end of the directory table */
590   590  
591 /* Abort when it is a static table or could not stretch dynamic table */ 591 /* Abort when it is a static table or could not stretch dynamic table */
592 if (clust == 0 || !(clust = create_chain(fs, dj->clust))) return FR_DENIED; 592 if (clust == 0 || !(clust = create_chain(fs, dj->clust))) return FR_DENIED;
593 if (clust == 1 || !move_window(fs, 0)) return FR_RW_ERROR; 593 if (clust == 1 || !move_window(fs, 0)) return FR_RW_ERROR;
594   594  
595 /* Cleanup the expanded table */ 595 /* Cleanup the expanded table */
596 fs->winsect = sector = clust2sect(fs, clust); 596 fs->winsect = sector = clust2sect(fs, clust);
597 memset(fs->win, 0, SS(fs)); 597 memset(fs->win, 0, SS(fs));
598 for (n = fs->csize; n; n--) { 598 for (n = fs->csize; n; n--) {
599 if (disk_write(fs->drive, fs->win, sector, 1) != RES_OK) 599 if (disk_write(fs->drive, fs->win, sector, 1) != RES_OK)
600 return FR_RW_ERROR; 600 return FR_RW_ERROR;
601 sector++; 601 sector++;
602 } 602 }
603 fs->winflag = 1; 603 fs->winflag = 1;
604 *dir = fs->win; 604 *dir = fs->win;
605   605  
606 return FR_OK; 606 return FR_OK;
607 } 607 }
608 #endif /* !_FS_READONLY */ 608 #endif /* !_FS_READONLY */
609   609  
610   610  
611   611  
612   612  
613 /*-----------------------------------------------------------------------*/ 613 /*-----------------------------------------------------------------------*/
614 /* Load boot record and check if it is an FAT boot record */ 614 /* Load boot record and check if it is an FAT boot record */
615 /*-----------------------------------------------------------------------*/ 615 /*-----------------------------------------------------------------------*/
616   616  
617 static 617 static
618 BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record or error */ 618 BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record or error */
619 FATFS *fs, /* File system object */ 619 FATFS *fs, /* File system object */
620 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ 620 DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
621 ) 621 )
622 { 622 {
623 if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */ 623 if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */
624 return 2; 624 return 2;
625 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */ 625 if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
626 return 2; 626 return 2;
627   627  
628 if (!memcmp(&fs->win[BS_FilSysType], "FAT", 3)) /* Check FAT signature */ 628 if (!memcmp(&fs->win[BS_FilSysType], "FAT", 3)) /* Check FAT signature */
629 return 0; 629 return 0;
630 if (!memcmp(&fs->win[BS_FilSysType32], "FAT32", 5) && !(fs->win[BPB_ExtFlags] & 0x80)) 630 if (!memcmp(&fs->win[BS_FilSysType32], "FAT32", 5) && !(fs->win[BPB_ExtFlags] & 0x80))
631 return 0; 631 return 0;
632   632  
633 return 1; 633 return 1;
634 } 634 }
635   635  
636   636  
637   637  
638   638  
639 /*-----------------------------------------------------------------------*/ 639 /*-----------------------------------------------------------------------*/
640 /* Make sure that the file system is valid */ 640 /* Make sure that the file system is valid */
641 /*-----------------------------------------------------------------------*/ 641 /*-----------------------------------------------------------------------*/
642   642  
643 static 643 static
644 FRESULT auto_mount ( /* FR_OK(0): successful, !=0: any error occured */ 644 FRESULT auto_mount ( /* FR_OK(0): successful, !=0: any error occured */
645 const char **path, /* Pointer to pointer to the path name (drive number) */ 645 const char **path, /* Pointer to pointer to the path name (drive number) */
646 FATFS **rfs, /* Pointer to pointer to the found file system object */ 646 FATFS **rfs, /* Pointer to pointer to the found file system object */
647 BYTE chk_wp /* !=0: Check media write protection for write access */ 647 BYTE chk_wp /* !=0: Check media write protection for write access */
648 ) 648 )
649 { 649 {
650 BYTE drv, fmt, *tbl; 650 BYTE drv, fmt, *tbl;
651 DSTATUS stat; 651 DSTATUS stat;
652 DWORD bootsect, fatsize, totalsect, maxclust; 652 DWORD bootsect, fatsize, totalsect, maxclust;
653 const char *p = *path; 653 const char *p = *path;
654 FATFS *fs; 654 FATFS *fs;
655   655  
656   656  
657 /* Get drive number from the path name */ 657 /* Get drive number from the path name */
658 while (*p == ' ') p++; /* Strip leading spaces */ 658 while (*p == ' ') p++; /* Strip leading spaces */
659 drv = p[0] - '0'; /* Is there a drive number? */ 659 drv = p[0] - '0'; /* Is there a drive number? */
660 if (drv <= 9 && p[1] == ':') 660 if (drv <= 9 && p[1] == ':')
661 p += 2; /* Found a drive number, get and strip it */ 661 p += 2; /* Found a drive number, get and strip it */
662 else 662 else
663 drv = 0; /* No drive number is given, use drive number 0 as default */ 663 drv = 0; /* No drive number is given, use drive number 0 as default */
664 if (*p == '/') p++; /* Strip heading slash */ 664 if (*p == '/') p++; /* Strip heading slash */
665 *path = p; /* Return pointer to the path name */ 665 *path = p; /* Return pointer to the path name */
666   666  
667 /* Check if the drive number is valid or not */ 667 /* Check if the drive number is valid or not */
668 if (drv >= _DRIVES) return FR_INVALID_DRIVE; /* Is the drive number valid? */ 668 if (drv >= _DRIVES) return FR_INVALID_DRIVE; /* Is the drive number valid? */
669 *rfs = fs = FatFs[drv]; /* Returen pointer to the corresponding file system object */ 669 *rfs = fs = FatFs[drv]; /* Returen pointer to the corresponding file system object */
670 if (!fs) return FR_NOT_ENABLED; /* Is the file system object registered? */ 670 if (!fs) return FR_NOT_ENABLED; /* Is the file system object registered? */
671   671  
672 if (fs->fs_type) { /* If the logical drive has been mounted */ 672 if (fs->fs_type) { /* If the logical drive has been mounted */
673 stat = disk_status(fs->drive); 673 stat = disk_status(fs->drive);
674 if (!(stat & STA_NOINIT)) { /* and physical drive is kept initialized (has not been changed), */ 674 if (!(stat & STA_NOINIT)) { /* and physical drive is kept initialized (has not been changed), */
675 #if !_FS_READONLY 675 #if !_FS_READONLY
676 if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ 676 if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
677 return FR_WRITE_PROTECTED; 677 return FR_WRITE_PROTECTED;
678 #endif 678 #endif
679 return FR_OK; /* The file system object is valid */ 679 return FR_OK; /* The file system object is valid */
680 } 680 }
681 } 681 }
682   682  
683 /* The logical drive must be re-mounted. Following code attempts to mount the logical drive */ 683 /* The logical drive must be re-mounted. Following code attempts to mount the logical drive */
684   684  
685 memset(fs, 0, sizeof(FATFS)); /* Clean-up the file system object */ 685 memset(fs, 0, sizeof(FATFS)); /* Clean-up the file system object */
686 fs->drive = LD2PD(drv); /* Bind the logical drive and a physical drive */ 686 fs->drive = LD2PD(drv); /* Bind the logical drive and a physical drive */
687 stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */ 687 stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */
688 if (stat & STA_NOINIT) /* Check if the drive is ready */ 688 if (stat & STA_NOINIT) /* Check if the drive is ready */
689 return FR_NOT_READY; 689 return FR_NOT_READY;
690 #if S_MAX_SIZ > 512 /* Get disk sector size if needed */ 690 #if S_MAX_SIZ > 512 /* Get disk sector size if needed */
691 if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > S_MAX_SIZ) 691 if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > S_MAX_SIZ)
692 return FR_NO_FILESYSTEM; 692 return FR_NO_FILESYSTEM;
693 #endif 693 #endif
694 #if !_FS_READONLY 694 #if !_FS_READONLY
695 if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */ 695 if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
696 return FR_WRITE_PROTECTED; 696 return FR_WRITE_PROTECTED;
697 #endif 697 #endif
698 /* Search FAT partition on the drive */ 698 /* Search FAT partition on the drive */
699 fmt = check_fs(fs, bootsect = 0); /* Check sector 0 as an SFD format */ 699 fmt = check_fs(fs, bootsect = 0); /* Check sector 0 as an SFD format */
700 if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */ 700 if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */
701 /* Check a partition listed in top of the partition table */ 701 /* Check a partition listed in top of the partition table */
702 tbl = &fs->win[MBR_Table + LD2PT(drv) * 16]; /* Partition table */ 702 tbl = &fs->win[MBR_Table + LD2PT(drv) * 16]; /* Partition table */
703 if (tbl[4]) { /* Is the partition existing? */ 703 if (tbl[4]) { /* Is the partition existing? */
704 bootsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */ 704 bootsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
705 fmt = check_fs(fs, bootsect); /* Check the partition */ 705 fmt = check_fs(fs, bootsect); /* Check the partition */
706 } 706 }
707 } 707 }
708 if (fmt || LD_WORD(&fs->win[BPB_BytsPerSec]) != SS(fs)) /* No valid FAT patition is found */ 708 if (fmt || LD_WORD(&fs->win[BPB_BytsPerSec]) != SS(fs)) /* No valid FAT patition is found */
709 return FR_NO_FILESYSTEM; 709 return FR_NO_FILESYSTEM;
710   710  
711 /* Initialize the file system object */ 711 /* Initialize the file system object */
712 fatsize = LD_WORD(&fs->win[BPB_FATSz16]); /* Number of sectors per FAT */ 712 fatsize = LD_WORD(&fs->win[BPB_FATSz16]); /* Number of sectors per FAT */
713 if (!fatsize) fatsize = LD_DWORD(&fs->win[BPB_FATSz32]); 713 if (!fatsize) fatsize = LD_DWORD(&fs->win[BPB_FATSz32]);
714 fs->sects_fat = fatsize; 714 fs->sects_fat = fatsize;
715 fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */ 715 fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
716 fatsize *= fs->n_fats; /* (Number of sectors in FAT area) */ 716 fatsize *= fs->n_fats; /* (Number of sectors in FAT area) */
717 fs->fatbase = bootsect + LD_WORD(&fs->win[BPB_RsvdSecCnt]); /* FAT start sector (lba) */ 717 fs->fatbase = bootsect + LD_WORD(&fs->win[BPB_RsvdSecCnt]); /* FAT start sector (lba) */
718 fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ 718 fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
719 fs->n_rootdir = LD_WORD(&fs->win[BPB_RootEntCnt]); /* Nmuber of root directory entries */ 719 fs->n_rootdir = LD_WORD(&fs->win[BPB_RootEntCnt]); /* Nmuber of root directory entries */
720 totalsect = LD_WORD(&fs->win[BPB_TotSec16]); /* Number of sectors on the file system */ 720 totalsect = LD_WORD(&fs->win[BPB_TotSec16]); /* Number of sectors on the file system */
721 if (!totalsect) totalsect = LD_DWORD(&fs->win[BPB_TotSec32]); 721 if (!totalsect) totalsect = LD_DWORD(&fs->win[BPB_TotSec32]);
722 fs->max_clust = maxclust = (totalsect /* max_clust = Last cluster# + 1 */ 722 fs->max_clust = maxclust = (totalsect /* max_clust = Last cluster# + 1 */
723 - LD_WORD(&fs->win[BPB_RsvdSecCnt]) - fatsize - fs->n_rootdir / (SS(fs)/32) 723 - LD_WORD(&fs->win[BPB_RsvdSecCnt]) - fatsize - fs->n_rootdir / (SS(fs)/32)
724 ) / fs->csize + 2; 724 ) / fs->csize + 2;
725   725  
726 fmt = FS_FAT12; /* Determine the FAT sub type */ 726 fmt = FS_FAT12; /* Determine the FAT sub type */
727 if (maxclust >= 0xFF7) fmt = FS_FAT16; 727 if (maxclust >= 0xFF7) fmt = FS_FAT16;
728 if (maxclust >= 0xFFF7) fmt = FS_FAT32; 728 if (maxclust >= 0xFFF7) fmt = FS_FAT32;
729   729  
730 if (fmt == FS_FAT32) 730 if (fmt == FS_FAT32)
731 fs->dirbase = LD_DWORD(&fs->win[BPB_RootClus]); /* Root directory start cluster */ 731 fs->dirbase = LD_DWORD(&fs->win[BPB_RootClus]); /* Root directory start cluster */
732 else 732 else
733 fs->dirbase = fs->fatbase + fatsize; /* Root directory start sector (lba) */ 733 fs->dirbase = fs->fatbase + fatsize; /* Root directory start sector (lba) */
734 fs->database = fs->fatbase + fatsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */ 734 fs->database = fs->fatbase + fatsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */
735   735  
736 #if !_FS_READONLY 736 #if !_FS_READONLY
737 /* Initialize allocation information */ 737 /* Initialize allocation information */
738 fs->free_clust = 0xFFFFFFFF; 738 fs->free_clust = 0xFFFFFFFF;
739 #if _USE_FSINFO 739 #if _USE_FSINFO
740 /* Get fsinfo if needed */ 740 /* Get fsinfo if needed */
741 if (fmt == FS_FAT32) { 741 if (fmt == FS_FAT32) {
742 fs->fsi_sector = bootsect + LD_WORD(&fs->win[BPB_FSInfo]); 742 fs->fsi_sector = bootsect + LD_WORD(&fs->win[BPB_FSInfo]);
743 if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK && 743 if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
744 LD_WORD(&fs->win[BS_55AA]) == 0xAA55 && 744 LD_WORD(&fs->win[BS_55AA]) == 0xAA55 &&
745 LD_DWORD(&fs->win[FSI_LeadSig]) == 0x41615252 && 745 LD_DWORD(&fs->win[FSI_LeadSig]) == 0x41615252 &&
746 LD_DWORD(&fs->win[FSI_StrucSig]) == 0x61417272) { 746 LD_DWORD(&fs->win[FSI_StrucSig]) == 0x61417272) {
747 fs->last_clust = LD_DWORD(&fs->win[FSI_Nxt_Free]); 747 fs->last_clust = LD_DWORD(&fs->win[FSI_Nxt_Free]);
748 fs->free_clust = LD_DWORD(&fs->win[FSI_Free_Count]); 748 fs->free_clust = LD_DWORD(&fs->win[FSI_Free_Count]);
749 } 749 }
750 } 750 }
751 #endif 751 #endif
752 #endif 752 #endif
753   753  
754 fs->fs_type = fmt; /* FAT syb-type */ 754 fs->fs_type = fmt; /* FAT syb-type */
755 fs->id = ++fsid; /* File system mount ID */ 755 fs->id = ++fsid; /* File system mount ID */
756 return FR_OK; 756 return FR_OK;
757 } 757 }
758   758  
759   759  
760   760  
761   761  
762 /*-----------------------------------------------------------------------*/ 762 /*-----------------------------------------------------------------------*/
763 /* Check if the file/dir object is valid or not */ 763 /* Check if the file/dir object is valid or not */
764 /*-----------------------------------------------------------------------*/ 764 /*-----------------------------------------------------------------------*/
765   765  
766 static 766 static
767 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ 767 FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
768 const FATFS *fs, /* Pointer to the file system object */ 768 const FATFS *fs, /* Pointer to the file system object */
769 WORD id /* Member id of the target object to be checked */ 769 WORD id /* Member id of the target object to be checked */
770 ) 770 )
771 { 771 {
772 if (!fs || !fs->fs_type || fs->id != id) 772 if (!fs || !fs->fs_type || fs->id != id)
773 return FR_INVALID_OBJECT; 773 return FR_INVALID_OBJECT;
774 if (disk_status(fs->drive) & STA_NOINIT) 774 if (disk_status(fs->drive) & STA_NOINIT)
775 return FR_NOT_READY; 775 return FR_NOT_READY;
776   776  
777 return FR_OK; 777 return FR_OK;
778 } 778 }
779   779  
780   780  
781   781  
782   782  
783 /*-------------------------------------------------------------------------- 783 /*--------------------------------------------------------------------------
784   784  
785 Public Functions 785 Public Functions
786   786  
787 --------------------------------------------------------------------------*/ 787 --------------------------------------------------------------------------*/
788   788  
789   789  
790   790  
791 /*-----------------------------------------------------------------------*/ 791 /*-----------------------------------------------------------------------*/
792 /* Mount/Unmount a Locical Drive */ 792 /* Mount/Unmount a Locical Drive */
793 /*-----------------------------------------------------------------------*/ 793 /*-----------------------------------------------------------------------*/
794   794  
795 FRESULT f_mount ( 795 FRESULT f_mount (
796 BYTE drv, /* Logical drive number to be mounted/unmounted */ 796 BYTE drv, /* Logical drive number to be mounted/unmounted */
797 FATFS *fs /* Pointer to new file system object (NULL for unmount)*/ 797 FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
798 ) 798 )
799 { 799 {
800 if (drv >= _DRIVES) return FR_INVALID_DRIVE; 800 if (drv >= _DRIVES) return FR_INVALID_DRIVE;
801   801  
802 if (FatFs[drv]) FatFs[drv]->fs_type = 0; /* Clear old object */ 802 if (FatFs[drv]) FatFs[drv]->fs_type = 0; /* Clear old object */
803   803  
804 FatFs[drv] = fs; /* Register and clear new object */ 804 FatFs[drv] = fs; /* Register and clear new object */
805 if (fs) fs->fs_type = 0; 805 if (fs) fs->fs_type = 0;
806   806  
807 return FR_OK; 807 return FR_OK;
808 } 808 }
809   809  
810   810  
811   811  
812   812  
813 /*-----------------------------------------------------------------------*/ 813 /*-----------------------------------------------------------------------*/
814 /* Open or Create a File */ 814 /* Open or Create a File */
815 /*-----------------------------------------------------------------------*/ 815 /*-----------------------------------------------------------------------*/
816   816  
817 FRESULT f_open ( 817 FRESULT f_open (
818 FIL *fp, /* Pointer to the blank file object */ 818 FIL *fp, /* Pointer to the blank file object */
819 const char *path, /* Pointer to the file name */ 819 const char *path, /* Pointer to the file name */
820 BYTE mode /* Access mode and file open mode flags */ 820 BYTE mode /* Access mode and file open mode flags */
821 ) 821 )
822 { 822 {
823 FRESULT res; 823 FRESULT res;
824 DIR dj; 824 DIR dj;
825 BYTE *dir; 825 BYTE *dir;
826 char fn[8+3+1]; 826 char fn[8+3+1];
827   827  
828   828  
829 fp->fs = NULL; /* Clear file object */ 829 fp->fs = NULL; /* Clear file object */
830 #if !_FS_READONLY 830 #if !_FS_READONLY
831 mode &= (FA_READ|FA_WRITE|FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW); 831 mode &= (FA_READ|FA_WRITE|FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW);
832 res = auto_mount(&path, &dj.fs, (BYTE)(mode & (FA_WRITE|FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW))); 832 res = auto_mount(&path, &dj.fs, (BYTE)(mode & (FA_WRITE|FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW)));
833 #else 833 #else
834 mode &= FA_READ; 834 mode &= FA_READ;
835 res = auto_mount(&path, &dj.fs, 0); 835 res = auto_mount(&path, &dj.fs, 0);
836 #endif 836 #endif
837 if (res != FR_OK) return res; 837 if (res != FR_OK) return res;
838 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 838 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
839   839  
840 #if !_FS_READONLY 840 #if !_FS_READONLY
841 /* Create or Open a file */ 841 /* Create or Open a file */
842 if (mode & (FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW)) { 842 if (mode & (FA_CREATE_ALWAYS|FA_OPEN_ALWAYS|FA_CREATE_NEW)) {
843 DWORD ps, rs; 843 DWORD ps, rs;
844 if (res != FR_OK) { /* No file, create new */ 844 if (res != FR_OK) { /* No file, create new */
845 if (res != FR_NO_FILE) return res; 845 if (res != FR_NO_FILE) return res;
846 res = reserve_direntry(&dj, &dir); 846 res = reserve_direntry(&dj, &dir);
847 if (res != FR_OK) return res; 847 if (res != FR_OK) return res;
848 memset(dir, 0, 32); /* Initialize the new entry with open name */ 848 memset(dir, 0, 32); /* Initialize the new entry with open name */
849 memcpy(&dir[DIR_Name], fn, 8+3); 849 memcpy(&dir[DIR_Name], fn, 8+3);
850 dir[DIR_NTres] = fn[11]; 850 dir[DIR_NTres] = fn[11];
851 mode |= FA_CREATE_ALWAYS; 851 mode |= FA_CREATE_ALWAYS;
852 } 852 }
853 else { /* Any object is already existing */ 853 else { /* Any object is already existing */
854 if (mode & FA_CREATE_NEW) /* Cannot create new */ 854 if (mode & FA_CREATE_NEW) /* Cannot create new */
855 return FR_EXIST; 855 return FR_EXIST;
856 if (!dir || (dir[DIR_Attr] & (AM_RDO|AM_DIR))) /* Cannot overwrite it (R/O or DIR) */ 856 if (!dir || (dir[DIR_Attr] & (AM_RDO|AM_DIR))) /* Cannot overwrite it (R/O or DIR) */
857 return FR_DENIED; 857 return FR_DENIED;
858 if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero if needed */ 858 if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero if needed */
859 rs = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]); /* Get start cluster */ 859 rs = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]); /* Get start cluster */
860 ST_WORD(&dir[DIR_FstClusHI], 0); /* cluster = 0 */ 860 ST_WORD(&dir[DIR_FstClusHI], 0); /* cluster = 0 */
861 ST_WORD(&dir[DIR_FstClusLO], 0); 861 ST_WORD(&dir[DIR_FstClusLO], 0);
862 ST_DWORD(&dir[DIR_FileSize], 0); /* size = 0 */ 862 ST_DWORD(&dir[DIR_FileSize], 0); /* size = 0 */
863 dj.fs->winflag = 1; 863 dj.fs->winflag = 1;
864 ps = dj.fs->winsect; /* Remove the cluster chain */ 864 ps = dj.fs->winsect; /* Remove the cluster chain */
865 if (!remove_chain(dj.fs, rs) || !move_window(dj.fs, ps)) 865 if (!remove_chain(dj.fs, rs) || !move_window(dj.fs, ps))
866 return FR_RW_ERROR; 866 return FR_RW_ERROR;
867 dj.fs->last_clust = rs - 1; /* Reuse the cluster hole */ 867 dj.fs->last_clust = rs - 1; /* Reuse the cluster hole */
868 } 868 }
869 } 869 }
870 if (mode & FA_CREATE_ALWAYS) { 870 if (mode & FA_CREATE_ALWAYS) {
871 dir[DIR_Attr] = 0; /* Reset attribute */ 871 dir[DIR_Attr] = 0; /* Reset attribute */
872 ps = get_fattime(); 872 ps = get_fattime();
873 ST_DWORD(&dir[DIR_CrtTime], ps); /* Created time */ 873 ST_DWORD(&dir[DIR_CrtTime], ps); /* Created time */
874 dj.fs->winflag = 1; 874 dj.fs->winflag = 1;
875 mode |= FA__WRITTEN; /* Set file changed flag */ 875 mode |= FA__WRITTEN; /* Set file changed flag */
876 } 876 }
877 } 877 }
878 /* Open an existing file */ 878 /* Open an existing file */
879 else { 879 else {
880 #endif /* !_FS_READONLY */ 880 #endif /* !_FS_READONLY */
881 if (res != FR_OK) return res; /* Trace failed */ 881 if (res != FR_OK) return res; /* Trace failed */
882 if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */ 882 if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
883 return FR_NO_FILE; 883 return FR_NO_FILE;
884 #if !_FS_READONLY 884 #if !_FS_READONLY
885 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ 885 if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
886 return FR_DENIED; 886 return FR_DENIED;
887 } 887 }
888 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ 888 fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
889 fp->dir_ptr = dir; 889 fp->dir_ptr = dir;
890 #endif 890 #endif
891 fp->flag = mode; /* File access mode */ 891 fp->flag = mode; /* File access mode */
892 fp->org_clust = /* File start cluster */ 892 fp->org_clust = /* File start cluster */
893 ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]); 893 ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]);
894 fp->fsize = LD_DWORD(&dir[DIR_FileSize]); /* File size */ 894 fp->fsize = LD_DWORD(&dir[DIR_FileSize]); /* File size */
895 fp->fptr = 0; fp->csect = 255; /* File pointer */ 895 fp->fptr = 0; fp->csect = 255; /* File pointer */
896 fp->curr_sect = 0; 896 fp->curr_sect = 0;
897 fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */ 897 fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */
898   898  
899 return FR_OK; 899 return FR_OK;
900 } 900 }
901   901  
902   902  
903   903  
904   904  
905 /*-----------------------------------------------------------------------*/ 905 /*-----------------------------------------------------------------------*/
906 /* Read File */ 906 /* Read File */
907 /*-----------------------------------------------------------------------*/ 907 /*-----------------------------------------------------------------------*/
908   908  
909 FRESULT f_read ( 909 FRESULT f_read (
910 FIL *fp, /* Pointer to the file object */ 910 FIL *fp, /* Pointer to the file object */
911 void *buff, /* Pointer to data buffer */ 911 void *buff, /* Pointer to data buffer */
912 UINT btr, /* Number of bytes to read */ 912 UINT btr, /* Number of bytes to read */
913 UINT *br /* Pointer to number of bytes read */ 913 UINT *br /* Pointer to number of bytes read */
914 ) 914 )
915 { 915 {
916 FRESULT res; 916 FRESULT res;
917 DWORD clust, sect, remain; 917 DWORD clust, sect, remain;
918 UINT rcnt, cc; 918 UINT rcnt, cc;
919 BYTE *rbuff = buff; 919 BYTE *rbuff = buff;
920   920  
921   921  
922 *br = 0; 922 *br = 0;
923 res = validate(fp->fs, fp->id); /* Check validity of the object */ 923 res = validate(fp->fs, fp->id); /* Check validity of the object */
924 if (res != FR_OK) return res; 924 if (res != FR_OK) return res;
925 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */ 925 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */
926 if (!(fp->flag & FA_READ)) return FR_DENIED; /* Check access mode */ 926 if (!(fp->flag & FA_READ)) return FR_DENIED; /* Check access mode */
927 remain = fp->fsize - fp->fptr; 927 remain = fp->fsize - fp->fptr;
928 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ 928 if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
929   929  
930 for ( ; btr; /* Repeat until all data transferred */ 930 for ( ; btr; /* Repeat until all data transferred */
931 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { 931 rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
932 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ 932 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
933 if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */ 933 if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
934 clust = (fp->fptr == 0) ? /* On the top of the file? */ 934 clust = (fp->fptr == 0) ? /* On the top of the file? */
935 fp->org_clust : get_cluster(fp->fs, fp->curr_clust); 935 fp->org_clust : get_cluster(fp->fs, fp->curr_clust);
936 if (clust < 2 || clust >= fp->fs->max_clust) goto fr_error; 936 if (clust < 2 || clust >= fp->fs->max_clust) goto fr_error;
937 fp->curr_clust = clust; /* Update current cluster */ 937 fp->curr_clust = clust; /* Update current cluster */
938 fp->csect = 0; /* Reset sector address in the cluster */ 938 fp->csect = 0; /* Reset sector address in the cluster */
939 } 939 }
940 sect = clust2sect(fp->fs, fp->curr_clust) + fp->csect; /* Get current sector */ 940 sect = clust2sect(fp->fs, fp->curr_clust) + fp->csect; /* Get current sector */
941 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ 941 cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
942 if (cc) { /* Read maximum contiguous sectors directly */ 942 if (cc) { /* Read maximum contiguous sectors directly */
943 if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */ 943 if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
944 cc = fp->fs->csize - fp->csect; 944 cc = fp->fs->csize - fp->csect;
945 if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK) 945 if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
946 goto fr_error; 946 goto fr_error;
947 fp->csect += (BYTE)cc; /* Next sector address in the cluster */ 947 fp->csect += (BYTE)cc; /* Next sector address in the cluster */
948 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ 948 rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
949 continue; 949 continue;
950 } 950 }
951 if (sect != fp->curr_sect) { /* Is window offset changed? */ 951 if (sect != fp->curr_sect) { /* Is window offset changed? */
952 #if !_FS_READONLY 952 #if !_FS_READONLY
953 if (fp->flag & FA__DIRTY) { /* Write back file I/O buffer if needed */ 953 if (fp->flag & FA__DIRTY) { /* Write back file I/O buffer if needed */
954 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK) 954 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK)
955 goto fr_error; 955 goto fr_error;
956 fp->flag &= (BYTE)~FA__DIRTY; 956 fp->flag &= (BYTE)~FA__DIRTY;
957 } 957 }
958 #endif 958 #endif
959 if (disk_read(fp->fs->drive, fp->buffer, sect, 1) != RES_OK) /* Fill file I/O buffer with file data */ 959 if (disk_read(fp->fs->drive, fp->buffer, sect, 1) != RES_OK) /* Fill file I/O buffer with file data */
960 goto fr_error; 960 goto fr_error;
961 fp->curr_sect = sect; 961 fp->curr_sect = sect;
962 } 962 }
963 fp->csect++; /* Next sector address in the cluster */ 963 fp->csect++; /* Next sector address in the cluster */
964 } 964 }
965 rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector from file I/O buffer */ 965 rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector from file I/O buffer */
966 if (rcnt > btr) rcnt = btr; 966 if (rcnt > btr) rcnt = btr;
967 memcpy(rbuff, &fp->buffer[fp->fptr % SS(fp->fs)], rcnt); 967 memcpy(rbuff, &fp->buffer[fp->fptr % SS(fp->fs)], rcnt);
968 } 968 }
969   969  
970 return FR_OK; 970 return FR_OK;
971   971  
972 fr_error: /* Abort this file due to an unrecoverable error */ 972 fr_error: /* Abort this file due to an unrecoverable error */
973 fp->flag |= FA__ERROR; 973 fp->flag |= FA__ERROR;
974 return FR_RW_ERROR; 974 return FR_RW_ERROR;
975 } 975 }
976   976  
977   977  
978   978  
979   979  
980 #if !_FS_READONLY 980 #if !_FS_READONLY
981 /*-----------------------------------------------------------------------*/ 981 /*-----------------------------------------------------------------------*/
982 /* Write File */ 982 /* Write File */
983 /*-----------------------------------------------------------------------*/ 983 /*-----------------------------------------------------------------------*/
984   984  
985 FRESULT f_write ( 985 FRESULT f_write (
986 FIL *fp, /* Pointer to the file object */ 986 FIL *fp, /* Pointer to the file object */
987 const void *buff, /* Pointer to the data to be written */ 987 const void *buff, /* Pointer to the data to be written */
988 UINT btw, /* Number of bytes to write */ 988 UINT btw, /* Number of bytes to write */
989 UINT *bw /* Pointer to number of bytes written */ 989 UINT *bw /* Pointer to number of bytes written */
990 ) 990 )
991 { 991 {
992 FRESULT res; 992 FRESULT res;
993 DWORD clust, sect; 993 DWORD clust, sect;
994 UINT wcnt, cc; 994 UINT wcnt, cc;
995 const BYTE *wbuff = buff; 995 const BYTE *wbuff = buff;
996   996  
997   997  
998 *bw = 0; 998 *bw = 0;
999 res = validate(fp->fs, fp->id); /* Check validity of the object */ 999 res = validate(fp->fs, fp->id); /* Check validity of the object */
1000 if (res != FR_OK) return res; 1000 if (res != FR_OK) return res;
1001 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */ 1001 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */
1002 if (!(fp->flag & FA_WRITE)) return FR_DENIED; /* Check access mode */ 1002 if (!(fp->flag & FA_WRITE)) return FR_DENIED; /* Check access mode */
1003 if (fp->fsize + btw < fp->fsize) return FR_OK; /* File size cannot reach 4GB */ 1003 if (fp->fsize + btw < fp->fsize) return FR_OK; /* File size cannot reach 4GB */
1004   1004  
1005 for ( ; btw; /* Repeat until all data transferred */ 1005 for ( ; btw; /* Repeat until all data transferred */
1006 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { 1006 wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
1007 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ 1007 if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
1008 if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */ 1008 if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
1009 if (fp->fptr == 0) { /* On the top of the file? */ 1009 if (fp->fptr == 0) { /* On the top of the file? */
1010 clust = fp->org_clust; /* Follow from the origin */ 1010 clust = fp->org_clust; /* Follow from the origin */
1011 if (clust == 0) /* When there is no cluster chain, */ 1011 if (clust == 0) /* When there is no cluster chain, */
1012 fp->org_clust = clust = create_chain(fp->fs, 0); /* Create a new cluster chain */ 1012 fp->org_clust = clust = create_chain(fp->fs, 0); /* Create a new cluster chain */
1013 } else { /* Middle or end of the file */ 1013 } else { /* Middle or end of the file */
1014 clust = create_chain(fp->fs, fp->curr_clust); /* Trace or streach cluster chain */ 1014 clust = create_chain(fp->fs, fp->curr_clust); /* Trace or streach cluster chain */
1015 } 1015 }
1016 if (clust == 0) break; /* Could not allocate a new cluster (disk full) */ 1016 if (clust == 0) break; /* Could not allocate a new cluster (disk full) */
1017 if (clust == 1 || clust >= fp->fs->max_clust) goto fw_error; 1017 if (clust == 1 || clust >= fp->fs->max_clust) goto fw_error;
1018 fp->curr_clust = clust; /* Update current cluster */ 1018 fp->curr_clust = clust; /* Update current cluster */
1019 fp->csect = 0; /* Reset sector address in the cluster */ 1019 fp->csect = 0; /* Reset sector address in the cluster */
1020 } 1020 }
1021 sect = clust2sect(fp->fs, fp->curr_clust) + fp->csect; /* Get current sector */ 1021 sect = clust2sect(fp->fs, fp->curr_clust) + fp->csect; /* Get current sector */
1022 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ 1022 cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
1023 if (cc) { /* Write maximum contiguous sectors directly */ 1023 if (cc) { /* Write maximum contiguous sectors directly */
1024 if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */ 1024 if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
1025 cc = fp->fs->csize - fp->csect; 1025 cc = fp->fs->csize - fp->csect;
1026 if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK) 1026 if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
1027 goto fw_error; 1027 goto fw_error;
1028 fp->csect += (BYTE)cc; /* Next sector address in the cluster */ 1028 fp->csect += (BYTE)cc; /* Next sector address in the cluster */
1029 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ 1029 wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
1030 continue; 1030 continue;
1031 } 1031 }
1032 if (sect != fp->curr_sect) { /* Is window offset changed? */ 1032 if (sect != fp->curr_sect) { /* Is window offset changed? */
1033 if (fp->flag & FA__DIRTY) { /* Write back file I/O buffer if needed */ 1033 if (fp->flag & FA__DIRTY) { /* Write back file I/O buffer if needed */
1034 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK) 1034 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK)
1035 goto fw_error; 1035 goto fw_error;
1036 fp->flag &= (BYTE)~FA__DIRTY; 1036 fp->flag &= (BYTE)~FA__DIRTY;
1037 } 1037 }
1038 if (fp->fptr < fp->fsize && /* Fill file I/O buffer with file data */ 1038 if (fp->fptr < fp->fsize && /* Fill file I/O buffer with file data */
1039 disk_read(fp->fs->drive, fp->buffer, sect, 1) != RES_OK) 1039 disk_read(fp->fs->drive, fp->buffer, sect, 1) != RES_OK)
1040 goto fw_error; 1040 goto fw_error;
1041 fp->curr_sect = sect; 1041 fp->curr_sect = sect;
1042 } 1042 }
1043 fp->csect++; /* Next sector address in the cluster */ 1043 fp->csect++; /* Next sector address in the cluster */
1044 } 1044 }
1045 wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */ 1045 wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
1046 if (wcnt > btw) wcnt = btw; 1046 if (wcnt > btw) wcnt = btw;
1047 memcpy(&fp->buffer[fp->fptr % SS(fp->fs)], wbuff, wcnt); 1047 memcpy(&fp->buffer[fp->fptr % SS(fp->fs)], wbuff, wcnt);
1048 fp->flag |= FA__DIRTY; 1048 fp->flag |= FA__DIRTY;
1049 } 1049 }
1050   1050  
1051 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ 1051 if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
1052 fp->flag |= FA__WRITTEN; /* Set file changed flag */ 1052 fp->flag |= FA__WRITTEN; /* Set file changed flag */
1053 return FR_OK; 1053 return FR_OK;
1054   1054  
1055 fw_error: /* Abort this file due to an unrecoverable error */ 1055 fw_error: /* Abort this file due to an unrecoverable error */
1056 fp->flag |= FA__ERROR; 1056 fp->flag |= FA__ERROR;
1057 return FR_RW_ERROR; 1057 return FR_RW_ERROR;
1058 } 1058 }
1059   1059  
1060   1060  
1061   1061  
1062   1062  
1063 /*-----------------------------------------------------------------------*/ 1063 /*-----------------------------------------------------------------------*/
1064 /* Synchronize the file object */ 1064 /* Synchronize the file object */
1065 /*-----------------------------------------------------------------------*/ 1065 /*-----------------------------------------------------------------------*/
1066   1066  
1067 FRESULT f_sync ( 1067 FRESULT f_sync (
1068 FIL *fp /* Pointer to the file object */ 1068 FIL *fp /* Pointer to the file object */
1069 ) 1069 )
1070 { 1070 {
1071 FRESULT res; 1071 FRESULT res;
1072 DWORD tim; 1072 DWORD tim;
1073 BYTE *dir; 1073 BYTE *dir;
1074   1074  
1075   1075  
1076 res = validate(fp->fs, fp->id); /* Check validity of the object */ 1076 res = validate(fp->fs, fp->id); /* Check validity of the object */
1077 if (res == FR_OK) { 1077 if (res == FR_OK) {
1078 if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ 1078 if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
1079 /* Write back data buffer if needed */ 1079 /* Write back data buffer if needed */
1080 if (fp->flag & FA__DIRTY) { 1080 if (fp->flag & FA__DIRTY) {
1081 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK) 1081 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK)
1082 return FR_RW_ERROR; 1082 return FR_RW_ERROR;
1083 fp->flag &= (BYTE)~FA__DIRTY; 1083 fp->flag &= (BYTE)~FA__DIRTY;
1084 } 1084 }
1085 /* Update the directory entry */ 1085 /* Update the directory entry */
1086 if (!move_window(fp->fs, fp->dir_sect)) 1086 if (!move_window(fp->fs, fp->dir_sect))
1087 return FR_RW_ERROR; 1087 return FR_RW_ERROR;
1088 dir = fp->dir_ptr; 1088 dir = fp->dir_ptr;
1089 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ 1089 dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
1090 ST_DWORD(&dir[DIR_FileSize], fp->fsize); /* Update file size */ 1090 ST_DWORD(&dir[DIR_FileSize], fp->fsize); /* Update file size */
1091 ST_WORD(&dir[DIR_FstClusLO], fp->org_clust); /* Update start cluster */ 1091 ST_WORD(&dir[DIR_FstClusLO], fp->org_clust); /* Update start cluster */
1092 ST_WORD(&dir[DIR_FstClusHI], fp->org_clust >> 16); 1092 ST_WORD(&dir[DIR_FstClusHI], fp->org_clust >> 16);
1093 tim = get_fattime(); /* Updated time */ 1093 tim = get_fattime(); /* Updated time */
1094 ST_DWORD(&dir[DIR_WrtTime], tim); 1094 ST_DWORD(&dir[DIR_WrtTime], tim);
1095 fp->flag &= (BYTE)~FA__WRITTEN; 1095 fp->flag &= (BYTE)~FA__WRITTEN;
1096 res = sync(fp->fs); 1096 res = sync(fp->fs);
1097 } 1097 }
1098 } 1098 }
1099 return res; 1099 return res;
1100 } 1100 }
1101   1101  
1102 #endif /* !_FS_READONLY */ 1102 #endif /* !_FS_READONLY */
1103   1103  
1104   1104  
1105   1105  
1106   1106  
1107 /*-----------------------------------------------------------------------*/ 1107 /*-----------------------------------------------------------------------*/
1108 /* Close File */ 1108 /* Close File */
1109 /*-----------------------------------------------------------------------*/ 1109 /*-----------------------------------------------------------------------*/
1110   1110  
1111 FRESULT f_close ( 1111 FRESULT f_close (
1112 FIL *fp /* Pointer to the file object to be closed */ 1112 FIL *fp /* Pointer to the file object to be closed */
1113 ) 1113 )
1114 { 1114 {
1115 FRESULT res; 1115 FRESULT res;
1116   1116  
1117   1117  
1118 #if !_FS_READONLY 1118 #if !_FS_READONLY
1119 res = f_sync(fp); 1119 res = f_sync(fp);
1120 #else 1120 #else
1121 res = validate(fp->fs, fp->id); 1121 res = validate(fp->fs, fp->id);
1122 #endif 1122 #endif
1123 if (res == FR_OK) fp->fs = NULL; 1123 if (res == FR_OK) fp->fs = NULL;
1124 return res; 1124 return res;
1125 } 1125 }
1126   1126  
1127   1127  
1128   1128  
1129   1129  
1130 #if _FS_MINIMIZE <= 2 1130 #if _FS_MINIMIZE <= 2
1131 /*-----------------------------------------------------------------------*/ 1131 /*-----------------------------------------------------------------------*/
1132 /* Seek File R/W Pointer */ 1132 /* Seek File R/W Pointer */
1133 /*-----------------------------------------------------------------------*/ 1133 /*-----------------------------------------------------------------------*/
1134   1134  
1135 FRESULT f_lseek ( 1135 FRESULT f_lseek (
1136 FIL *fp, /* Pointer to the file object */ 1136 FIL *fp, /* Pointer to the file object */
1137 DWORD ofs /* File pointer from top of file */ 1137 DWORD ofs /* File pointer from top of file */
1138 ) 1138 )
1139 { 1139 {
1140 FRESULT res; 1140 FRESULT res;
1141 DWORD clust, csize, nsect, ifptr; 1141 DWORD clust, csize, nsect, ifptr;
1142   1142  
1143   1143  
1144 res = validate(fp->fs, fp->id); /* Check validity of the object */ 1144 res = validate(fp->fs, fp->id); /* Check validity of the object */
1145 if (res != FR_OK) return res; 1145 if (res != FR_OK) return res;
1146 if (fp->flag & FA__ERROR) return FR_RW_ERROR; 1146 if (fp->flag & FA__ERROR) return FR_RW_ERROR;
1147 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ 1147 if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
1148 #if !_FS_READONLY 1148 #if !_FS_READONLY
1149 && !(fp->flag & FA_WRITE) 1149 && !(fp->flag & FA_WRITE)
1150 #endif 1150 #endif
1151 ) ofs = fp->fsize; 1151 ) ofs = fp->fsize;
1152   1152  
1153 ifptr = fp->fptr; 1153 ifptr = fp->fptr;
1154 fp->fptr = 0; fp->csect = 255; 1154 fp->fptr = 0; fp->csect = 255;
1155 nsect = 0; 1155 nsect = 0;
1156 if (ofs > 0) { 1156 if (ofs > 0) {
1157 csize = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ 1157 csize = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
1158 if (ifptr > 0 && 1158 if (ifptr > 0 &&
1159 (ofs - 1) / csize >= (ifptr - 1) / csize) {/* When seek to same or following cluster, */ 1159 (ofs - 1) / csize >= (ifptr - 1) / csize) {/* When seek to same or following cluster, */
1160 fp->fptr = (ifptr - 1) & ~(csize - 1); /* start from the current cluster */ 1160 fp->fptr = (ifptr - 1) & ~(csize - 1); /* start from the current cluster */
1161 ofs -= fp->fptr; 1161 ofs -= fp->fptr;
1162 clust = fp->curr_clust; 1162 clust = fp->curr_clust;
1163 } else { /* When seek to back cluster, */ 1163 } else { /* When seek to back cluster, */
1164 clust = fp->org_clust; /* start from the first cluster */ 1164 clust = fp->org_clust; /* start from the first cluster */
1165 #if !_FS_READONLY 1165 #if !_FS_READONLY
1166 if (clust == 0) { /* If no cluster chain, create a new chain */ 1166 if (clust == 0) { /* If no cluster chain, create a new chain */
1167 clust = create_chain(fp->fs, 0); 1167 clust = create_chain(fp->fs, 0);
1168 if (clust == 1) goto fk_error; 1168 if (clust == 1) goto fk_error;
1169 fp->org_clust = clust; 1169 fp->org_clust = clust;
1170 } 1170 }
1171 #endif 1171 #endif
1172 fp->curr_clust = clust; 1172 fp->curr_clust = clust;
1173 } 1173 }
1174 if (clust != 0) { 1174 if (clust != 0) {
1175 while (ofs > csize) { /* Cluster following loop */ 1175 while (ofs > csize) { /* Cluster following loop */
1176 #if !_FS_READONLY 1176 #if !_FS_READONLY
1177 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ 1177 if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
1178 clust = create_chain(fp->fs, clust); /* Force streached if in write mode */ 1178 clust = create_chain(fp->fs, clust); /* Force streached if in write mode */
1179 if (clust == 0) { /* When disk gets full, clip file size */ 1179 if (clust == 0) { /* When disk gets full, clip file size */
1180 ofs = csize; break; 1180 ofs = csize; break;
1181 } 1181 }
1182 } else 1182 } else
1183 #endif 1183 #endif
1184 clust = get_cluster(fp->fs, clust); /* Follow cluster chain if not in write mode */ 1184 clust = get_cluster(fp->fs, clust); /* Follow cluster chain if not in write mode */
1185 if (clust < 2 || clust >= fp->fs->max_clust) goto fk_error; 1185 if (clust < 2 || clust >= fp->fs->max_clust) goto fk_error;
1186 fp->curr_clust = clust; 1186 fp->curr_clust = clust;
1187 fp->fptr += csize; 1187 fp->fptr += csize;
1188 ofs -= csize; 1188 ofs -= csize;
1189 } 1189 }
1190 fp->fptr += ofs; 1190 fp->fptr += ofs;
1191 fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */ 1191 fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */
1192 if (ofs & (SS(fp->fs) - 1)) { 1192 if (ofs & (SS(fp->fs) - 1)) {
1193 nsect = clust2sect(fp->fs, clust) + fp->csect; /* Current sector */ 1193 nsect = clust2sect(fp->fs, clust) + fp->csect; /* Current sector */
1194 fp->csect++; 1194 fp->csect++;
1195 } 1195 }
1196 } 1196 }
1197 } 1197 }
1198 if (nsect && nsect != fp->curr_sect) { 1198 if (nsect && nsect != fp->curr_sect) {
1199 #if !_FS_READONLY 1199 #if !_FS_READONLY
1200 if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */ 1200 if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */
1201 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK) 1201 if (disk_write(fp->fs->drive, fp->buffer, fp->curr_sect, 1) != RES_OK)
1202 goto fk_error; 1202 goto fk_error;
1203 fp->flag &= (BYTE)~FA__DIRTY; 1203 fp->flag &= (BYTE)~FA__DIRTY;
1204 } 1204 }
1205 #endif 1205 #endif
1206 if (disk_read(fp->fs->drive, fp->buffer, nsect, 1) != RES_OK) 1206 if (disk_read(fp->fs->drive, fp->buffer, nsect, 1) != RES_OK)
1207 goto fk_error; 1207 goto fk_error;
1208 fp->curr_sect = nsect; 1208 fp->curr_sect = nsect;
1209 } 1209 }
1210   1210  
1211 #if !_FS_READONLY 1211 #if !_FS_READONLY
1212 if (fp->fptr > fp->fsize) { /* Set changed flag if the file was extended */ 1212 if (fp->fptr > fp->fsize) { /* Set changed flag if the file was extended */
1213 fp->fsize = fp->fptr; 1213 fp->fsize = fp->fptr;
1214 fp->flag |= FA__WRITTEN; 1214 fp->flag |= FA__WRITTEN;
1215 } 1215 }
1216 #endif 1216 #endif
1217   1217  
1218 return FR_OK; 1218 return FR_OK;
1219   1219  
1220 fk_error: /* Abort this file due to an unrecoverable error */ 1220 fk_error: /* Abort this file due to an unrecoverable error */
1221 fp->flag |= FA__ERROR; 1221 fp->flag |= FA__ERROR;
1222 return FR_RW_ERROR; 1222 return FR_RW_ERROR;
1223 } 1223 }
1224   1224  
1225   1225  
1226   1226  
1227   1227  
1228 #if _FS_MINIMIZE <= 1 1228 #if _FS_MINIMIZE <= 1
1229 /*-----------------------------------------------------------------------*/ 1229 /*-----------------------------------------------------------------------*/
1230 /* Create a directroy object */ 1230 /* Create a directroy object */
1231 /*-----------------------------------------------------------------------*/ 1231 /*-----------------------------------------------------------------------*/
1232   1232  
1233 FRESULT f_opendir ( 1233 FRESULT f_opendir (
1234 DIR *dj, /* Pointer to directory object to create */ 1234 DIR *dj, /* Pointer to directory object to create */
1235 const char *path /* Pointer to the directory path */ 1235 const char *path /* Pointer to the directory path */
1236 ) 1236 )
1237 { 1237 {
1238 FRESULT res; 1238 FRESULT res;
1239 BYTE *dir; 1239 BYTE *dir;
1240 char fn[8+3+1]; 1240 char fn[8+3+1];
1241   1241  
1242   1242  
1243 res = auto_mount(&path, &dj->fs, 0); 1243 res = auto_mount(&path, &dj->fs, 0);
1244 if (res == FR_OK) { 1244 if (res == FR_OK) {
1245 res = trace_path(dj, fn, path, &dir); /* Trace the directory path */ 1245 res = trace_path(dj, fn, path, &dir); /* Trace the directory path */
1246 if (res == FR_OK) { /* Trace completed */ 1246 if (res == FR_OK) { /* Trace completed */
1247 if (dir) { /* It is not the root dir */ 1247 if (dir) { /* It is not the root dir */
1248 if (dir[DIR_Attr] & AM_DIR) { /* The entry is a directory */ 1248 if (dir[DIR_Attr] & AM_DIR) { /* The entry is a directory */
1249 dj->clust = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]); 1249 dj->clust = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]);
1250 dj->sect = clust2sect(dj->fs, dj->clust); 1250 dj->sect = clust2sect(dj->fs, dj->clust);
1251 dj->index = 2; 1251 dj->index = 2;
1252 } else { /* The entry is not a directory */ 1252 } else { /* The entry is not a directory */
1253 res = FR_NO_FILE; 1253 res = FR_NO_FILE;
1254 } 1254 }
1255 } 1255 }
1256 dj->id = dj->fs->id; 1256 dj->id = dj->fs->id;
1257 } 1257 }
1258 } 1258 }
1259   1259  
1260 return res; 1260 return res;
1261 } 1261 }
1262   1262  
1263   1263  
1264   1264  
1265   1265  
1266 /*-----------------------------------------------------------------------*/ 1266 /*-----------------------------------------------------------------------*/
1267 /* Read Directory Entry in Sequense */ 1267 /* Read Directory Entry in Sequense */
1268 /*-----------------------------------------------------------------------*/ 1268 /*-----------------------------------------------------------------------*/
1269   1269  
1270 FRESULT f_readdir ( 1270 FRESULT f_readdir (
1271 DIR *dj, /* Pointer to the directory object */ 1271 DIR *dj, /* Pointer to the directory object */
1272 FILINFO *finfo /* Pointer to file information to return */ 1272 FILINFO *finfo /* Pointer to file information to return */
1273 ) 1273 )
1274 { 1274 {
1275 BYTE *dir, c, res; 1275 BYTE *dir, c, res;
1276   1276  
1277   1277  
1278 res = validate(dj->fs, dj->id); /* Check validity of the object */ 1278 res = validate(dj->fs, dj->id); /* Check validity of the object */
1279 if (res != FR_OK) return res; 1279 if (res != FR_OK) return res;
1280   1280  
1281 finfo->fname[0] = 0; 1281 finfo->fname[0] = 0;
1282 while (dj->sect) { 1282 while (dj->sect) {
1283 if (!move_window(dj->fs, dj->sect)) 1283 if (!move_window(dj->fs, dj->sect))
1284 return FR_RW_ERROR; 1284 return FR_RW_ERROR;
1285 dir = &dj->fs->win[(dj->index & ((SS(dj->fs) - 1) >> 5)) * 32]; /* pointer to the directory entry */ 1285 dir = &dj->fs->win[(dj->index & ((SS(dj->fs) - 1) >> 5)) * 32]; /* pointer to the directory entry */
1286 c = dir[DIR_Name]; 1286 c = dir[DIR_Name];
1287 if (c == 0) break; /* Has it reached to end of dir? */ 1287 if (c == 0) break; /* Has it reached to end of dir? */
1288 if (c != 0xE5 && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */ 1288 if (c != 0xE5 && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
1289 get_fileinfo(finfo, dir); 1289 get_fileinfo(finfo, dir);
1290 if (!next_dir_entry(dj)) dj->sect = 0; /* Next entry */ 1290 if (!next_dir_entry(dj)) dj->sect = 0; /* Next entry */
1291 if (finfo->fname[0]) break; /* Found valid entry */ 1291 if (finfo->fname[0]) break; /* Found valid entry */
1292 } 1292 }
1293   1293  
1294 return FR_OK; 1294 return FR_OK;
1295 } 1295 }
1296   1296  
1297   1297  
1298   1298  
1299   1299  
1300 #if _FS_MINIMIZE == 0 1300 #if _FS_MINIMIZE == 0
1301 /*-----------------------------------------------------------------------*/ 1301 /*-----------------------------------------------------------------------*/
1302 /* Get File Status */ 1302 /* Get File Status */
1303 /*-----------------------------------------------------------------------*/ 1303 /*-----------------------------------------------------------------------*/
1304   1304  
1305 FRESULT f_stat ( 1305 FRESULT f_stat (
1306 const char *path, /* Pointer to the file path */ 1306 const char *path, /* Pointer to the file path */
1307 FILINFO *finfo /* Pointer to file information to return */ 1307 FILINFO *finfo /* Pointer to file information to return */
1308 ) 1308 )
1309 { 1309 {
1310 FRESULT res; 1310 FRESULT res;
1311 DIR dj; 1311 DIR dj;
1312 BYTE *dir; 1312 BYTE *dir;
1313 char fn[8+3+1]; 1313 char fn[8+3+1];
1314   1314  
1315   1315  
1316 res = auto_mount(&path, &dj.fs, 0); 1316 res = auto_mount(&path, &dj.fs, 0);
1317 if (res == FR_OK) { 1317 if (res == FR_OK) {
1318 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 1318 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
1319 if (res == FR_OK) { /* Trace completed */ 1319 if (res == FR_OK) { /* Trace completed */
1320 if (dir) /* Found an object */ 1320 if (dir) /* Found an object */
1321 get_fileinfo(finfo, dir); 1321 get_fileinfo(finfo, dir);
1322 else /* It is root dir */ 1322 else /* It is root dir */
1323 res = FR_INVALID_NAME; 1323 res = FR_INVALID_NAME;
1324 } 1324 }
1325 } 1325 }
1326   1326  
1327 return res; 1327 return res;
1328 } 1328 }
1329   1329  
1330   1330  
1331   1331  
1332 #if !_FS_READONLY 1332 #if !_FS_READONLY
1333 /*-----------------------------------------------------------------------*/ 1333 /*-----------------------------------------------------------------------*/
1334 /* Truncate File */ 1334 /* Truncate File */
1335 /*-----------------------------------------------------------------------*/ 1335 /*-----------------------------------------------------------------------*/
1336   1336  
1337 FRESULT f_truncate ( 1337 FRESULT f_truncate (
1338 FIL *fp /* Pointer to the file object */ 1338 FIL *fp /* Pointer to the file object */
1339 ) 1339 )
1340 { 1340 {
1341 FRESULT res; 1341 FRESULT res;
1342 DWORD ncl; 1342 DWORD ncl;
1343   1343  
1344   1344  
1345 res = validate(fp->fs, fp->id); /* Check validity of the object */ 1345 res = validate(fp->fs, fp->id); /* Check validity of the object */
1346 if (res != FR_OK) return res; 1346 if (res != FR_OK) return res;
1347 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */ 1347 if (fp->flag & FA__ERROR) return FR_RW_ERROR; /* Check error flag */
1348 if (!(fp->flag & FA_WRITE)) return FR_DENIED; /* Check access mode */ 1348 if (!(fp->flag & FA_WRITE)) return FR_DENIED; /* Check access mode */
1349   1349  
1350 if (fp->fsize > fp->fptr) { 1350 if (fp->fsize > fp->fptr) {
1351 fp->fsize = fp->fptr; /* Set file size to current R/W point */ 1351 fp->fsize = fp->fptr; /* Set file size to current R/W point */
1352 fp->flag |= FA__WRITTEN; 1352 fp->flag |= FA__WRITTEN;
1353 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ 1353 if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
1354 if (!remove_chain(fp->fs, fp->org_clust)) goto ft_error; 1354 if (!remove_chain(fp->fs, fp->org_clust)) goto ft_error;
1355 fp->org_clust = 0; 1355 fp->org_clust = 0;
1356 } else { /* When truncate a part of the file, remove remaining clusters */ 1356 } else { /* When truncate a part of the file, remove remaining clusters */
1357 ncl = get_cluster(fp->fs, fp->curr_clust); 1357 ncl = get_cluster(fp->fs, fp->curr_clust);
1358 if (ncl < 2) goto ft_error; 1358 if (ncl < 2) goto ft_error;
1359 if (ncl < fp->fs->max_clust) { 1359 if (ncl < fp->fs->max_clust) {
1360 if (!put_cluster(fp->fs, fp->curr_clust, 0x0FFFFFFF)) goto ft_error; 1360 if (!put_cluster(fp->fs, fp->curr_clust, 0x0FFFFFFF)) goto ft_error;
1361 if (!remove_chain(fp->fs, ncl)) goto ft_error; 1361 if (!remove_chain(fp->fs, ncl)) goto ft_error;
1362 } 1362 }
1363 } 1363 }
1364 } 1364 }
1365   1365  
1366 return FR_OK; 1366 return FR_OK;
1367   1367  
1368 ft_error: /* Abort this file due to an unrecoverable error */ 1368 ft_error: /* Abort this file due to an unrecoverable error */
1369 fp->flag |= FA__ERROR; 1369 fp->flag |= FA__ERROR;
1370 return FR_RW_ERROR; 1370 return FR_RW_ERROR;
1371 } 1371 }
1372   1372  
1373   1373  
1374   1374  
1375   1375  
1376 /*-----------------------------------------------------------------------*/ 1376 /*-----------------------------------------------------------------------*/
1377 /* Get Number of Free Clusters */ 1377 /* Get Number of Free Clusters */
1378 /*-----------------------------------------------------------------------*/ 1378 /*-----------------------------------------------------------------------*/
1379   1379  
1380 FRESULT f_getfree ( 1380 FRESULT f_getfree (
1381 const char *drv, /* Pointer to the logical drive number (root dir) */ 1381 const char *drv, /* Pointer to the logical drive number (root dir) */
1382 DWORD *nclust, /* Pointer to the variable to return number of free clusters */ 1382 DWORD *nclust, /* Pointer to the variable to return number of free clusters */
1383 FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */ 1383 FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
1384 ) 1384 )
1385 { 1385 {
1386 FRESULT res; 1386 FRESULT res;
1387 DWORD n, clust, sect; 1387 DWORD n, clust, sect;
1388 BYTE fat, f, *p; 1388 BYTE fat, f, *p;
1389   1389  
1390   1390  
1391 /* Get drive number */ 1391 /* Get drive number */
1392 res = auto_mount(&drv, fatfs, 0); 1392 res = auto_mount(&drv, fatfs, 0);
1393 if (res != FR_OK) return res; 1393 if (res != FR_OK) return res;
1394   1394  
1395 /* If number of free cluster is valid, return it without cluster scan. */ 1395 /* If number of free cluster is valid, return it without cluster scan. */
1396 if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) { 1396 if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
1397 *nclust = (*fatfs)->free_clust; 1397 *nclust = (*fatfs)->free_clust;
1398 return FR_OK; 1398 return FR_OK;
1399 } 1399 }
1400   1400  
1401 /* Get number of free clusters */ 1401 /* Get number of free clusters */
1402 fat = (*fatfs)->fs_type; 1402 fat = (*fatfs)->fs_type;
1403 n = 0; 1403 n = 0;
1404 if (fat == FS_FAT12) { 1404 if (fat == FS_FAT12) {
1405 clust = 2; 1405 clust = 2;
1406 do { 1406 do {
1407 if ((WORD)get_cluster(*fatfs, clust) == 0) n++; 1407 if ((WORD)get_cluster(*fatfs, clust) == 0) n++;
1408 } while (++clust < (*fatfs)->max_clust); 1408 } while (++clust < (*fatfs)->max_clust);
1409 } else { 1409 } else {
1410 clust = (*fatfs)->max_clust; 1410 clust = (*fatfs)->max_clust;
1411 sect = (*fatfs)->fatbase; 1411 sect = (*fatfs)->fatbase;
1412 f = 0; p = 0; 1412 f = 0; p = 0;
1413 do { 1413 do {
1414 if (!f) { 1414 if (!f) {
1415 if (!move_window(*fatfs, sect++)) return FR_RW_ERROR; 1415 if (!move_window(*fatfs, sect++)) return FR_RW_ERROR;
1416 p = (*fatfs)->win; 1416 p = (*fatfs)->win;
1417 } 1417 }
1418 if (fat == FS_FAT16) { 1418 if (fat == FS_FAT16) {
1419 if (LD_WORD(p) == 0) n++; 1419 if (LD_WORD(p) == 0) n++;
1420 p += 2; f += 1; 1420 p += 2; f += 1;
1421 } else { 1421 } else {
1422 if (LD_DWORD(p) == 0) n++; 1422 if (LD_DWORD(p) == 0) n++;
1423 p += 4; f += 2; 1423 p += 4; f += 2;
1424 } 1424 }
1425 } while (--clust); 1425 } while (--clust);
1426 } 1426 }
1427 (*fatfs)->free_clust = n; 1427 (*fatfs)->free_clust = n;
1428 #if _USE_FSINFO 1428 #if _USE_FSINFO
1429 if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1; 1429 if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
1430 #endif 1430 #endif
1431   1431  
1432 *nclust = n; 1432 *nclust = n;
1433 return FR_OK; 1433 return FR_OK;
1434 } 1434 }
1435   1435  
1436   1436  
1437   1437  
1438   1438  
1439 /*-----------------------------------------------------------------------*/ 1439 /*-----------------------------------------------------------------------*/
1440 /* Delete a File or Directory */ 1440 /* Delete a File or Directory */
1441 /*-----------------------------------------------------------------------*/ 1441 /*-----------------------------------------------------------------------*/
1442   1442  
1443 FRESULT f_unlink ( 1443 FRESULT f_unlink (
1444 const char *path /* Pointer to the file or directory path */ 1444 const char *path /* Pointer to the file or directory path */
1445 ) 1445 )
1446 { 1446 {
1447 FRESULT res; 1447 FRESULT res;
1448 DIR dj; 1448 DIR dj;
1449 BYTE *dir, *sdir; 1449 BYTE *dir, *sdir;
1450 DWORD dclust, dsect; 1450 DWORD dclust, dsect;
1451 char fn[8+3+1]; 1451 char fn[8+3+1];
1452   1452  
1453   1453  
1454 res = auto_mount(&path, &dj.fs, 1); 1454 res = auto_mount(&path, &dj.fs, 1);
1455 if (res != FR_OK) return res; 1455 if (res != FR_OK) return res;
1456 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 1456 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
1457 if (res != FR_OK) return res; /* Trace failed */ 1457 if (res != FR_OK) return res; /* Trace failed */
1458 if (!dir) return FR_INVALID_NAME; /* It is the root directory */ 1458 if (!dir) return FR_INVALID_NAME; /* It is the root directory */
1459 if (dir[DIR_Attr] & AM_RDO) return FR_DENIED; /* It is a R/O object */ 1459 if (dir[DIR_Attr] & AM_RDO) return FR_DENIED; /* It is a R/O object */
1460 dsect = dj.fs->winsect; 1460 dsect = dj.fs->winsect;
1461 dclust = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]); 1461 dclust = ((DWORD)LD_WORD(&dir[DIR_FstClusHI]) << 16) | LD_WORD(&dir[DIR_FstClusLO]);
1462   1462  
1463 if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */ 1463 if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */
1464 dj.clust = dclust; /* Check if the sub-dir is empty or not */ 1464 dj.clust = dclust; /* Check if the sub-dir is empty or not */
1465 dj.sect = clust2sect(dj.fs, dclust); 1465 dj.sect = clust2sect(dj.fs, dclust);
1466 dj.index = 2; 1466 dj.index = 2;
1467 do { 1467 do {
1468 if (!move_window(dj.fs, dj.sect)) return FR_RW_ERROR; 1468 if (!move_window(dj.fs, dj.sect)) return FR_RW_ERROR;
1469 sdir = &dj.fs->win[(dj.index & ((SS(dj.fs) - 1) >> 5)) * 32]; 1469 sdir = &dj.fs->win[(dj.index & ((SS(dj.fs) - 1) >> 5)) * 32];
1470 if (sdir[DIR_Name] == 0) break; 1470 if (sdir[DIR_Name] == 0) break;
1471 if (sdir[DIR_Name] != 0xE5 && !(sdir[DIR_Attr] & AM_VOL)) 1471 if (sdir[DIR_Name] != 0xE5 && !(sdir[DIR_Attr] & AM_VOL))
1472 return FR_DENIED; /* The directory is not empty */ 1472 return FR_DENIED; /* The directory is not empty */
1473 } while (next_dir_entry(&dj)); 1473 } while (next_dir_entry(&dj));
1474 } 1474 }
1475   1475  
1476 if (!move_window(dj.fs, dsect)) return FR_RW_ERROR; /* Mark the directory entry 'deleted' */ 1476 if (!move_window(dj.fs, dsect)) return FR_RW_ERROR; /* Mark the directory entry 'deleted' */
1477 dir[DIR_Name] = 0xE5; 1477 dir[DIR_Name] = 0xE5;
1478 dj.fs->winflag = 1; 1478 dj.fs->winflag = 1;
1479 if (!remove_chain(dj.fs, dclust)) return FR_RW_ERROR; /* Remove the cluster chain */ 1479 if (!remove_chain(dj.fs, dclust)) return FR_RW_ERROR; /* Remove the cluster chain */
1480   1480  
1481 return sync(dj.fs); 1481 return sync(dj.fs);
1482 } 1482 }
1483   1483  
1484   1484  
1485   1485  
1486   1486  
1487 /*-----------------------------------------------------------------------*/ 1487 /*-----------------------------------------------------------------------*/
1488 /* Create a Directory */ 1488 /* Create a Directory */
1489 /*-----------------------------------------------------------------------*/ 1489 /*-----------------------------------------------------------------------*/
1490   1490  
1491 FRESULT f_mkdir ( 1491 FRESULT f_mkdir (
1492 const char *path /* Pointer to the directory path */ 1492 const char *path /* Pointer to the directory path */
1493 ) 1493 )
1494 { 1494 {
1495 FRESULT res; 1495 FRESULT res;
1496 DIR dj; 1496 DIR dj;
1497 BYTE *dir, *fw, n; 1497 BYTE *dir, *fw, n;
1498 char fn[8+3+1]; 1498 char fn[8+3+1];
1499 DWORD sect, dsect, dclust, pclust, tim; 1499 DWORD sect, dsect, dclust, pclust, tim;
1500   1500  
1501   1501  
1502 res = auto_mount(&path, &dj.fs, 1); 1502 res = auto_mount(&path, &dj.fs, 1);
1503 if (res != FR_OK) return res; 1503 if (res != FR_OK) return res;
1504 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 1504 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
1505 if (res == FR_OK) return FR_EXIST; /* Any file or directory is already existing */ 1505 if (res == FR_OK) return FR_EXIST; /* Any file or directory is already existing */
1506 if (res != FR_NO_FILE) return res; 1506 if (res != FR_NO_FILE) return res;
1507   1507  
1508 res = reserve_direntry(&dj, &dir); /* Reserve a directory entry */ 1508 res = reserve_direntry(&dj, &dir); /* Reserve a directory entry */
1509 if (res != FR_OK) return res; 1509 if (res != FR_OK) return res;
1510 sect = dj.fs->winsect; 1510 sect = dj.fs->winsect;
1511 dclust = create_chain(dj.fs, 0); /* Allocate a cluster for new directory table */ 1511 dclust = create_chain(dj.fs, 0); /* Allocate a cluster for new directory table */
1512 if (dclust == 1) return FR_RW_ERROR; 1512 if (dclust == 1) return FR_RW_ERROR;
1513 dsect = clust2sect(dj.fs, dclust); 1513 dsect = clust2sect(dj.fs, dclust);
1514 if (!dsect) return FR_DENIED; 1514 if (!dsect) return FR_DENIED;
1515 if (!move_window(dj.fs, dsect)) return FR_RW_ERROR; 1515 if (!move_window(dj.fs, dsect)) return FR_RW_ERROR;
1516   1516  
1517 fw = dj.fs->win; 1517 fw = dj.fs->win;
1518 memset(fw, 0, SS(dj.fs)); /* Clear the new directory table */ 1518 memset(fw, 0, SS(dj.fs)); /* Clear the new directory table */
1519 for (n = 1; n < dj.fs->csize; n++) { 1519 for (n = 1; n < dj.fs->csize; n++) {
1520 if (disk_write(dj.fs->drive, fw, ++dsect, 1) != RES_OK) 1520 if (disk_write(dj.fs->drive, fw, ++dsect, 1) != RES_OK)
1521 return FR_RW_ERROR; 1521 return FR_RW_ERROR;
1522 } 1522 }
1523 memset(&fw[DIR_Name], ' ', 8+3); /* Create "." entry */ 1523 memset(&fw[DIR_Name], ' ', 8+3); /* Create "." entry */
1524 fw[DIR_Name] = '.'; 1524 fw[DIR_Name] = '.';
1525 fw[DIR_Attr] = AM_DIR; 1525 fw[DIR_Attr] = AM_DIR;
1526 tim = get_fattime(); 1526 tim = get_fattime();
1527 ST_DWORD(&fw[DIR_WrtTime], tim); 1527 ST_DWORD(&fw[DIR_WrtTime], tim);
1528 memcpy(&fw[32], &fw[0], 32); fw[33] = '.'; /* Create ".." entry */ 1528 memcpy(&fw[32], &fw[0], 32); fw[33] = '.'; /* Create ".." entry */
1529 ST_WORD(&fw[ DIR_FstClusLO], dclust); 1529 ST_WORD(&fw[ DIR_FstClusLO], dclust);
1530 ST_WORD(&fw[ DIR_FstClusHI], dclust >> 16); 1530 ST_WORD(&fw[ DIR_FstClusHI], dclust >> 16);
1531 pclust = dj.sclust; 1531 pclust = dj.sclust;
1532 if (dj.fs->fs_type == FS_FAT32 && pclust == dj.fs->dirbase) pclust = 0; 1532 if (dj.fs->fs_type == FS_FAT32 && pclust == dj.fs->dirbase) pclust = 0;
1533 ST_WORD(&fw[32+DIR_FstClusLO], pclust); 1533 ST_WORD(&fw[32+DIR_FstClusLO], pclust);
1534 ST_WORD(&fw[32+DIR_FstClusHI], pclust >> 16); 1534 ST_WORD(&fw[32+DIR_FstClusHI], pclust >> 16);
1535 dj.fs->winflag = 1; 1535 dj.fs->winflag = 1;
1536   1536  
1537 if (!move_window(dj.fs, sect)) return FR_RW_ERROR; 1537 if (!move_window(dj.fs, sect)) return FR_RW_ERROR;
1538 memset(&dir[0], 0, 32); /* Initialize the new entry */ 1538 memset(&dir[0], 0, 32); /* Initialize the new entry */
1539 memcpy(&dir[DIR_Name], fn, 8+3); /* Name */ 1539 memcpy(&dir[DIR_Name], fn, 8+3); /* Name */
1540 dir[DIR_NTres] = fn[11]; 1540 dir[DIR_NTres] = fn[11];
1541 dir[DIR_Attr] = AM_DIR; /* Attribute */ 1541 dir[DIR_Attr] = AM_DIR; /* Attribute */
1542 ST_DWORD(&dir[DIR_WrtTime], tim); /* Crated time */ 1542 ST_DWORD(&dir[DIR_WrtTime], tim); /* Crated time */
1543 ST_WORD(&dir[DIR_FstClusLO], dclust); /* Table start cluster */ 1543 ST_WORD(&dir[DIR_FstClusLO], dclust); /* Table start cluster */
1544 ST_WORD(&dir[DIR_FstClusHI], dclust >> 16); 1544 ST_WORD(&dir[DIR_FstClusHI], dclust >> 16);
1545   1545  
1546 return sync(dj.fs); 1546 return sync(dj.fs);
1547 } 1547 }
1548   1548  
1549   1549  
1550   1550  
1551   1551  
1552 /*-----------------------------------------------------------------------*/ 1552 /*-----------------------------------------------------------------------*/
1553 /* Change File Attribute */ 1553 /* Change File Attribute */
1554 /*-----------------------------------------------------------------------*/ 1554 /*-----------------------------------------------------------------------*/
1555   1555  
1556 FRESULT f_chmod ( 1556 FRESULT f_chmod (
1557 const char *path, /* Pointer to the file path */ 1557 const char *path, /* Pointer to the file path */
1558 BYTE value, /* Attribute bits */ 1558 BYTE value, /* Attribute bits */
1559 BYTE mask /* Attribute mask to change */ 1559 BYTE mask /* Attribute mask to change */
1560 ) 1560 )
1561 { 1561 {
1562 FRESULT res; 1562 FRESULT res;
1563 DIR dj; 1563 DIR dj;
1564 BYTE *dir; 1564 BYTE *dir;
1565 char fn[8+3+1]; 1565 char fn[8+3+1];
1566   1566  
1567   1567  
1568 res = auto_mount(&path, &dj.fs, 1); 1568 res = auto_mount(&path, &dj.fs, 1);
1569 if (res == FR_OK) { 1569 if (res == FR_OK) {
1570 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 1570 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
1571 if (res == FR_OK) { /* Trace completed */ 1571 if (res == FR_OK) { /* Trace completed */
1572 if (!dir) { 1572 if (!dir) {
1573 res = FR_INVALID_NAME; /* Root directory */ 1573 res = FR_INVALID_NAME; /* Root directory */
1574 } else { 1574 } else {
1575 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ 1575 mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
1576 dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ 1576 dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
1577 res = sync(dj.fs); 1577 res = sync(dj.fs);
1578 } 1578 }
1579 } 1579 }
1580 } 1580 }
1581 return res; 1581 return res;
1582 } 1582 }
1583   1583  
1584   1584  
1585   1585  
1586   1586  
1587 /*-----------------------------------------------------------------------*/ 1587 /*-----------------------------------------------------------------------*/
1588 /* Change Timestamp */ 1588 /* Change Timestamp */
1589 /*-----------------------------------------------------------------------*/ 1589 /*-----------------------------------------------------------------------*/
1590   1590  
1591 FRESULT f_utime ( 1591 FRESULT f_utime (
1592 const char *path, /* Pointer to the file/directory name */ 1592 const char *path, /* Pointer to the file/directory name */
1593 const FILINFO *finfo /* Pointer to the timestamp to be set */ 1593 const FILINFO *finfo /* Pointer to the timestamp to be set */
1594 ) 1594 )
1595 { 1595 {
1596 FRESULT res; 1596 FRESULT res;
1597 DIR dj; 1597 DIR dj;
1598 BYTE *dir; 1598 BYTE *dir;
1599 char fn[8+3+1]; 1599 char fn[8+3+1];
1600   1600  
1601   1601  
1602 res = auto_mount(&path, &dj.fs, 1); 1602 res = auto_mount(&path, &dj.fs, 1);
1603 if (res == FR_OK) { 1603 if (res == FR_OK) {
1604 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */ 1604 res = trace_path(&dj, fn, path, &dir); /* Trace the file path */
1605 if (res == FR_OK) { /* Trace completed */ 1605 if (res == FR_OK) { /* Trace completed */
1606 if (!dir) { 1606 if (!dir) {
1607 res = FR_INVALID_NAME; /* Root directory */ 1607 res = FR_INVALID_NAME; /* Root directory */
1608 } else { 1608 } else {
1609 ST_WORD(&dir[DIR_WrtTime], finfo->ftime); 1609 ST_WORD(&dir[DIR_WrtTime], finfo->ftime);
1610 ST_WORD(&dir[DIR_WrtDate], finfo->fdate); 1610 ST_WORD(&dir[DIR_WrtDate], finfo->fdate);
1611 res = sync(dj.fs); 1611 res = sync(dj.fs);
1612 } 1612 }
1613 } 1613 }
1614 } 1614 }
1615 return res; 1615 return res;
1616 } 1616 }
1617   1617  
1618   1618  
1619   1619  
1620   1620  
1621 /*-----------------------------------------------------------------------*/ 1621 /*-----------------------------------------------------------------------*/
1622 /* Rename File/Directory */ 1622 /* Rename File/Directory */
1623 /*-----------------------------------------------------------------------*/ 1623 /*-----------------------------------------------------------------------*/
1624   1624  
1625 FRESULT f_rename ( 1625 FRESULT f_rename (
1626 const char *path_old, /* Pointer to the old name */ 1626 const char *path_old, /* Pointer to the old name */
1627 const char *path_new /* Pointer to the new name */ 1627 const char *path_new /* Pointer to the new name */
1628 ) 1628 )
1629 { 1629 {
1630 FRESULT res; 1630 FRESULT res;
1631 DIR dj; 1631 DIR dj;
1632 DWORD sect_old; 1632 DWORD sect_old;
1633 BYTE *dir_old, *dir_new, direntry[32-11]; 1633 BYTE *dir_old, *dir_new, direntry[32-11];
1634 char fn[8+3+1]; 1634 char fn[8+3+1];
1635   1635  
1636   1636  
1637 res = auto_mount(&path_old, &dj.fs, 1); 1637 res = auto_mount(&path_old, &dj.fs, 1);
1638 if (res != FR_OK) return res; 1638 if (res != FR_OK) return res;
1639   1639  
1640 res = trace_path(&dj, fn, path_old, &dir_old); /* Check old object */ 1640 res = trace_path(&dj, fn, path_old, &dir_old); /* Check old object */
1641 if (res != FR_OK) return res; /* The old object is not found */ 1641 if (res != FR_OK) return res; /* The old object is not found */
1642 if (!dir_old) return FR_NO_FILE; 1642 if (!dir_old) return FR_NO_FILE;
1643 sect_old = dj.fs->winsect; /* Save the object information */ 1643 sect_old = dj.fs->winsect; /* Save the object information */
1644 memcpy(direntry, &dir_old[DIR_Attr], 32-11); 1644 memcpy(direntry, &dir_old[DIR_Attr], 32-11);
1645   1645  
1646 res = trace_path(&dj, fn, path_new, &dir_new); /* Check new object */ 1646 res = trace_path(&dj, fn, path_new, &dir_new); /* Check new object */
1647 if (res == FR_OK) return FR_EXIST; /* The new object name is already existing */ 1647 if (res == FR_OK) return FR_EXIST; /* The new object name is already existing */
1648 if (res != FR_NO_FILE) return res; /* Is there no old name? */ 1648 if (res != FR_NO_FILE) return res; /* Is there no old name? */
1649 res = reserve_direntry(&dj, &dir_new); /* Reserve a directory entry */ 1649 res = reserve_direntry(&dj, &dir_new); /* Reserve a directory entry */
1650 if (res != FR_OK) return res; 1650 if (res != FR_OK) return res;
1651   1651  
1652 memcpy(&dir_new[DIR_Attr], direntry, 32-11); /* Create new entry */ 1652 memcpy(&dir_new[DIR_Attr], direntry, 32-11); /* Create new entry */
1653 memcpy(&dir_new[DIR_Name], fn, 8+3); 1653 memcpy(&dir_new[DIR_Name], fn, 8+3);
1654 dir_new[DIR_NTres] = fn[11]; 1654 dir_new[DIR_NTres] = fn[11];
1655 dj.fs->winflag = 1; 1655 dj.fs->winflag = 1;
1656   1656  
1657 if (!move_window(dj.fs, sect_old)) return FR_RW_ERROR; /* Delete old entry */ 1657 if (!move_window(dj.fs, sect_old)) return FR_RW_ERROR; /* Delete old entry */
1658 dir_old[DIR_Name] = 0xE5; 1658 dir_old[DIR_Name] = 0xE5;
1659   1659  
1660 return sync(dj.fs); 1660 return sync(dj.fs);
1661 } 1661 }
1662   1662  
1663 #endif /* !_FS_READONLY */ 1663 #endif /* !_FS_READONLY */
1664 #endif /* _FS_MINIMIZE == 0 */ 1664 #endif /* _FS_MINIMIZE == 0 */
1665 #endif /* _FS_MINIMIZE <= 1 */ 1665 #endif /* _FS_MINIMIZE <= 1 */
1666 #endif /* _FS_MINIMIZE <= 2 */ 1666 #endif /* _FS_MINIMIZE <= 2 */
1667   1667  
1668   1668  
1669   1669  
1670 #if _USE_MKFS && !_FS_READONLY 1670 #if _USE_MKFS && !_FS_READONLY
1671 /*-----------------------------------------------------------------------*/ 1671 /*-----------------------------------------------------------------------*/
1672 /* Create File System on the Drive */ 1672 /* Create File System on the Drive */
1673 /*-----------------------------------------------------------------------*/ 1673 /*-----------------------------------------------------------------------*/
1674 #define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */ 1674 #define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */
1675 #define N_FATS 1 /* 1 or 2 */ 1675 #define N_FATS 1 /* 1 or 2 */
1676 #define MAX_SECTOR 64000000UL /* Maximum partition size */ 1676 #define MAX_SECTOR 64000000UL /* Maximum partition size */
1677 #define MIN_SECTOR 2000UL /* Minimum partition size */ 1677 #define MIN_SECTOR 2000UL /* Minimum partition size */
1678   1678  
1679   1679  
1680   1680  
1681 FRESULT f_mkfs ( 1681 FRESULT f_mkfs (
1682 BYTE drv, /* Logical drive number */ 1682 BYTE drv, /* Logical drive number */
1683 BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */ 1683 BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */
1684 WORD allocsize /* Allocation unit size [bytes] */ 1684 WORD allocsize /* Allocation unit size [bytes] */
1685 ) 1685 )
1686 { 1686 {
1687 BYTE fmt, m, *tbl; 1687 BYTE fmt, m, *tbl;
1688 DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */ 1688 DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */
1689 DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */ 1689 DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */
1690 DWORD n_clust, n; 1690 DWORD n_clust, n;
1691 FATFS *fs; 1691 FATFS *fs;
1692 DSTATUS stat; 1692 DSTATUS stat;
1693   1693  
1694   1694  
1695 /* Check validity of the parameters */ 1695 /* Check validity of the parameters */
1696 if (drv >= _DRIVES) return FR_INVALID_DRIVE; 1696 if (drv >= _DRIVES) return FR_INVALID_DRIVE;
1697 if (partition >= 2) return FR_MKFS_ABORTED; 1697 if (partition >= 2) return FR_MKFS_ABORTED;
1698 for (n = 512; n <= 32768U && n != allocsize; n <<= 1); 1698 for (n = 512; n <= 32768U && n != allocsize; n <<= 1);
1699 if (n != allocsize) return FR_MKFS_ABORTED; 1699 if (n != allocsize) return FR_MKFS_ABORTED;
1700   1700  
1701 /* Check mounted drive and clear work area */ 1701 /* Check mounted drive and clear work area */
1702 fs = FatFs[drv]; 1702 fs = FatFs[drv];
1703 if (!fs) return FR_NOT_ENABLED; 1703 if (!fs) return FR_NOT_ENABLED;
1704 fs->fs_type = 0; 1704 fs->fs_type = 0;
1705 drv = LD2PD(drv); 1705 drv = LD2PD(drv);
1706   1706  
1707 /* Get disk statics */ 1707 /* Get disk statics */
1708 stat = disk_initialize(drv); 1708 stat = disk_initialize(drv);
1709 if (stat & STA_NOINIT) return FR_NOT_READY; 1709 if (stat & STA_NOINIT) return FR_NOT_READY;
1710 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; 1710 if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
1711 if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR) 1711 if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
1712 return FR_MKFS_ABORTED; 1712 return FR_MKFS_ABORTED;
1713 if (n_part > MAX_SECTOR) n_part = MAX_SECTOR; 1713 if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
1714 b_part = (!partition) ? 63 : 0; /* Boot sector */ 1714 b_part = (!partition) ? 63 : 0; /* Boot sector */
1715 n_part -= b_part; 1715 n_part -= b_part;
1716 #if S_MAX_SIZ > 512 /* Check disk sector size */ 1716 #if S_MAX_SIZ > 512 /* Check disk sector size */
1717 if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK 1717 if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
1718 || SS(fs) > S_MAX_SIZ 1718 || SS(fs) > S_MAX_SIZ
1719 || SS(fs) > allocsize) 1719 || SS(fs) > allocsize)
1720 return FR_MKFS_ABORTED; 1720 return FR_MKFS_ABORTED;
1721 #endif 1721 #endif
1722 allocsize /= SS(fs); /* Number of sectors per cluster */ 1722 allocsize /= SS(fs); /* Number of sectors per cluster */
1723   1723  
1724 /* Pre-compute number of clusters and FAT type */ 1724 /* Pre-compute number of clusters and FAT type */
1725 n_clust = n_part / allocsize; 1725 n_clust = n_part / allocsize;
1726 fmt = FS_FAT12; 1726 fmt = FS_FAT12;
1727 if (n_clust >= 0xFF5) fmt = FS_FAT16; 1727 if (n_clust >= 0xFF5) fmt = FS_FAT16;
1728 if (n_clust >= 0xFFF5) fmt = FS_FAT32; 1728 if (n_clust >= 0xFFF5) fmt = FS_FAT32;
1729   1729  
1730 /* Determine offset and size of FAT structure */ 1730 /* Determine offset and size of FAT structure */
1731 switch (fmt) { 1731 switch (fmt) {
1732 case FS_FAT12: 1732 case FS_FAT12:
1733 n_fat = ((n_clust * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs); 1733 n_fat = ((n_clust * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
1734 n_rsv = 1 + partition; 1734 n_rsv = 1 + partition;
1735 n_dir = N_ROOTDIR * 32 / SS(fs); 1735 n_dir = N_ROOTDIR * 32 / SS(fs);
1736 break; 1736 break;
1737 case FS_FAT16: 1737 case FS_FAT16:
1738 n_fat = ((n_clust * 2) + 4 + SS(fs) - 1) / SS(fs); 1738 n_fat = ((n_clust * 2) + 4 + SS(fs) - 1) / SS(fs);
1739 n_rsv = 1 + partition; 1739 n_rsv = 1 + partition;
1740 n_dir = N_ROOTDIR * 32 / SS(fs); 1740 n_dir = N_ROOTDIR * 32 / SS(fs);
1741 break; 1741 break;
1742 default: 1742 default:
1743 n_fat = ((n_clust * 4) + 8 + SS(fs) - 1) / SS(fs); 1743 n_fat = ((n_clust * 4) + 8 + SS(fs) - 1) / SS(fs);
1744 n_rsv = 33 - partition; 1744 n_rsv = 33 - partition;
1745 n_dir = 0; 1745 n_dir = 0;
1746 } 1746 }
1747 b_fat = b_part + n_rsv; /* FATs start sector */ 1747 b_fat = b_part + n_rsv; /* FATs start sector */
1748 b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */ 1748 b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
1749 b_data = b_dir + n_dir; /* Data start sector */ 1749 b_data = b_dir + n_dir; /* Data start sector */
1750   1750  
1751 /* Align data start sector to erase block boundary (for flash memory media) */ 1751 /* Align data start sector to erase block boundary (for flash memory media) */
1752 if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED; 1752 if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;
1753 n = (b_data + n - 1) & ~(n - 1); 1753 n = (b_data + n - 1) & ~(n - 1);
1754 n_fat += (n - b_data) / N_FATS; 1754 n_fat += (n - b_data) / N_FATS;
1755 /* b_dir and b_data are no longer used below */ 1755 /* b_dir and b_data are no longer used below */
1756   1756  
1757 /* Determine number of cluster and final check of validity of the FAT type */ 1757 /* Determine number of cluster and final check of validity of the FAT type */
1758 n_clust = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize; 1758 n_clust = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
1759 if ( (fmt == FS_FAT16 && n_clust < 0xFF5) 1759 if ( (fmt == FS_FAT16 && n_clust < 0xFF5)
1760 || (fmt == FS_FAT32 && n_clust < 0xFFF5)) 1760 || (fmt == FS_FAT32 && n_clust < 0xFFF5))
1761 return FR_MKFS_ABORTED; 1761 return FR_MKFS_ABORTED;
1762   1762  
1763 /* Create partition table if needed */ 1763 /* Create partition table if needed */
1764 if (!partition) { 1764 if (!partition) {
1765 DWORD n_disk = b_part + n_part; 1765 DWORD n_disk = b_part + n_part;
1766   1766  
1767 tbl = &fs->win[MBR_Table]; 1767 tbl = &fs->win[MBR_Table];
1768 ST_DWORD(&tbl[0], 0x00010180); /* Partition start in CHS */ 1768 ST_DWORD(&tbl[0], 0x00010180); /* Partition start in CHS */
1769 if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */ 1769 if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
1770 n_disk = n_disk / 63 / 255; 1770 n_disk = n_disk / 63 / 255;
1771 tbl[7] = (BYTE)n_disk; 1771 tbl[7] = (BYTE)n_disk;
1772 tbl[6] = (BYTE)((n_disk >> 2) | 63); 1772 tbl[6] = (BYTE)((n_disk >> 2) | 63);
1773 } else { 1773 } else {
1774 ST_WORD(&tbl[6], 0xFFFF); 1774 ST_WORD(&tbl[6], 0xFFFF);
1775 } 1775 }
1776 tbl[5] = 254; 1776 tbl[5] = 254;
1777 if (fmt != FS_FAT32) /* System ID */ 1777 if (fmt != FS_FAT32) /* System ID */
1778 tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06; 1778 tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
1779 else 1779 else
1780 tbl[4] = 0x0c; 1780 tbl[4] = 0x0c;
1781 ST_DWORD(&tbl[8], 63); /* Partition start in LBA */ 1781 ST_DWORD(&tbl[8], 63); /* Partition start in LBA */
1782 ST_DWORD(&tbl[12], n_part); /* Partition size in LBA */ 1782 ST_DWORD(&tbl[12], n_part); /* Partition size in LBA */
1783 ST_WORD(&tbl[64], 0xAA55); /* Signature */ 1783 ST_WORD(&tbl[64], 0xAA55); /* Signature */
1784 if (disk_write(drv, fs->win, 0, 1) != RES_OK) 1784 if (disk_write(drv, fs->win, 0, 1) != RES_OK)
1785 return FR_RW_ERROR; 1785 return FR_RW_ERROR;
1786 } 1786 }
1787   1787  
1788 /* Create boot record */ 1788 /* Create boot record */
1789 tbl = fs->win; /* Clear buffer */ 1789 tbl = fs->win; /* Clear buffer */
1790 memset(tbl, 0, SS(fs)); 1790 memset(tbl, 0, SS(fs));
1791 ST_DWORD(&tbl[BS_jmpBoot], 0x90FEEB); /* Boot code (jmp $, nop) */ 1791 ST_DWORD(&tbl[BS_jmpBoot], 0x90FEEB); /* Boot code (jmp $, nop) */
1792 ST_WORD(&tbl[BPB_BytsPerSec], SS(fs)); /* Sector size */ 1792 ST_WORD(&tbl[BPB_BytsPerSec], SS(fs)); /* Sector size */
1793 tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */ 1793 tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */
1794 ST_WORD(&tbl[BPB_RsvdSecCnt], n_rsv); /* Reserved sectors */ 1794 ST_WORD(&tbl[BPB_RsvdSecCnt], n_rsv); /* Reserved sectors */
1795 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */ 1795 tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
1796 ST_WORD(&tbl[BPB_RootEntCnt], SS(fs) / 32 * n_dir); /* Number of rootdir entries */ 1796 ST_WORD(&tbl[BPB_RootEntCnt], SS(fs) / 32 * n_dir); /* Number of rootdir entries */
1797 if (n_part < 0x10000) { /* Number of total sectors */ 1797 if (n_part < 0x10000) { /* Number of total sectors */
1798 ST_WORD(&tbl[BPB_TotSec16], n_part); 1798 ST_WORD(&tbl[BPB_TotSec16], n_part);
1799 } else { 1799 } else {
1800 ST_DWORD(&tbl[BPB_TotSec32], n_part); 1800 ST_DWORD(&tbl[BPB_TotSec32], n_part);
1801 } 1801 }
1802 tbl[BPB_Media] = 0xF8; /* Media descripter */ 1802 tbl[BPB_Media] = 0xF8; /* Media descripter */
1803 ST_WORD(&tbl[BPB_SecPerTrk], 63); /* Number of sectors per track */ 1803 ST_WORD(&tbl[BPB_SecPerTrk], 63); /* Number of sectors per track */
1804 ST_WORD(&tbl[BPB_NumHeads], 255); /* Number of heads */ 1804 ST_WORD(&tbl[BPB_NumHeads], 255); /* Number of heads */
1805 ST_DWORD(&tbl[BPB_HiddSec], b_part); /* Hidden sectors */ 1805 ST_DWORD(&tbl[BPB_HiddSec], b_part); /* Hidden sectors */
1806 n = get_fattime(); /* Use current time as a VSN */ 1806 n = get_fattime(); /* Use current time as a VSN */
1807 if (fmt != FS_FAT32) { 1807 if (fmt != FS_FAT32) {
1808 ST_DWORD(&tbl[BS_VolID], n); /* Volume serial number */ 1808 ST_DWORD(&tbl[BS_VolID], n); /* Volume serial number */
1809 ST_WORD(&tbl[BPB_FATSz16], n_fat); /* Number of secters per FAT */ 1809 ST_WORD(&tbl[BPB_FATSz16], n_fat); /* Number of secters per FAT */
1810 tbl[BS_DrvNum] = 0x80; /* Drive number */ 1810 tbl[BS_DrvNum] = 0x80; /* Drive number */
1811 tbl[BS_BootSig] = 0x29; /* Extended boot signature */ 1811 tbl[BS_BootSig] = 0x29; /* Extended boot signature */
1812 memcpy(&tbl[BS_VolLab], "NO NAME FAT ", 19); /* Volume lavel, FAT signature */ 1812 memcpy(&tbl[BS_VolLab], "NO NAME FAT ", 19); /* Volume lavel, FAT signature */
1813 } else { 1813 } else {
1814 ST_DWORD(&tbl[BS_VolID32], n); /* Volume serial number */ 1814 ST_DWORD(&tbl[BS_VolID32], n); /* Volume serial number */
1815 ST_DWORD(&tbl[BPB_FATSz32], n_fat); /* Number of secters per FAT */ 1815 ST_DWORD(&tbl[BPB_FATSz32], n_fat); /* Number of secters per FAT */
1816 ST_DWORD(&tbl[BPB_RootClus], 2); /* Root directory cluster (2) */ 1816 ST_DWORD(&tbl[BPB_RootClus], 2); /* Root directory cluster (2) */
1817 ST_WORD(&tbl[BPB_FSInfo], 1); /* FSInfo record (bs+1) */ 1817 ST_WORD(&tbl[BPB_FSInfo], 1); /* FSInfo record (bs+1) */
1818 ST_WORD(&tbl[BPB_BkBootSec], 6); /* Backup boot record (bs+6) */ 1818 ST_WORD(&tbl[BPB_BkBootSec], 6); /* Backup boot record (bs+6) */
1819 tbl[BS_DrvNum32] = 0x80; /* Drive number */ 1819 tbl[BS_DrvNum32] = 0x80; /* Drive number */
1820 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */ 1820 tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
1821 memcpy(&tbl[BS_VolLab32], "NO NAME FAT32 ", 19); /* Volume lavel, FAT signature */ 1821 memcpy(&tbl[BS_VolLab32], "NO NAME FAT32 ", 19); /* Volume lavel, FAT signature */
1822 } 1822 }
1823 ST_WORD(&tbl[BS_55AA], 0xAA55); /* Signature */ 1823 ST_WORD(&tbl[BS_55AA], 0xAA55); /* Signature */
1824 if (disk_write(drv, tbl, b_part+0, 1) != RES_OK) 1824 if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
1825 return FR_RW_ERROR; 1825 return FR_RW_ERROR;
1826 if (fmt == FS_FAT32) 1826 if (fmt == FS_FAT32)
1827 disk_write(drv, tbl, b_part+6, 1); 1827 disk_write(drv, tbl, b_part+6, 1);
1828   1828  
1829 /* Initialize FAT area */ 1829 /* Initialize FAT area */
1830 for (m = 0; m < N_FATS; m++) { 1830 for (m = 0; m < N_FATS; m++) {
1831 memset(tbl, 0, SS(fs)); /* 1st sector of the FAT */ 1831 memset(tbl, 0, SS(fs)); /* 1st sector of the FAT */
1832 if (fmt != FS_FAT32) { 1832 if (fmt != FS_FAT32) {
1833 n = (fmt == FS_FAT12) ? 0x00FFFFF8 : 0xFFFFFFF8; 1833 n = (fmt == FS_FAT12) ? 0x00FFFFF8 : 0xFFFFFFF8;
1834 ST_DWORD(&tbl[0], n); /* Reserve cluster #0-1 (FAT12/16) */ 1834 ST_DWORD(&tbl[0], n); /* Reserve cluster #0-1 (FAT12/16) */
1835 } else { 1835 } else {
1836 ST_DWORD(&tbl[0], 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */ 1836 ST_DWORD(&tbl[0], 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */
1837 ST_DWORD(&tbl[4], 0xFFFFFFFF); 1837 ST_DWORD(&tbl[4], 0xFFFFFFFF);
1838 ST_DWORD(&tbl[8], 0x0FFFFFFF); /* Reserve cluster #2 for root dir */ 1838 ST_DWORD(&tbl[8], 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
1839 } 1839 }
1840 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) 1840 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
1841 return FR_RW_ERROR; 1841 return FR_RW_ERROR;
1842 memset(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */ 1842 memset(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */
1843 for (n = 1; n < n_fat; n++) { 1843 for (n = 1; n < n_fat; n++) {
1844 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) 1844 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
1845 return FR_RW_ERROR; 1845 return FR_RW_ERROR;
1846 } 1846 }
1847 } 1847 }
1848   1848  
1849 /* Initialize Root directory */ 1849 /* Initialize Root directory */
1850 m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir); 1850 m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
1851 do { 1851 do {
1852 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK) 1852 if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
1853 return FR_RW_ERROR; 1853 return FR_RW_ERROR;
1854 } while (--m); 1854 } while (--m);
1855   1855  
1856 /* Create FSInfo record if needed */ 1856 /* Create FSInfo record if needed */
1857 if (fmt == FS_FAT32) { 1857 if (fmt == FS_FAT32) {
1858 ST_WORD(&tbl[BS_55AA], 0xAA55); 1858 ST_WORD(&tbl[BS_55AA], 0xAA55);
1859 ST_DWORD(&tbl[FSI_LeadSig], 0x41615252); 1859 ST_DWORD(&tbl[FSI_LeadSig], 0x41615252);
1860 ST_DWORD(&tbl[FSI_StrucSig], 0x61417272); 1860 ST_DWORD(&tbl[FSI_StrucSig], 0x61417272);
1861 ST_DWORD(&tbl[FSI_Free_Count], n_clust - 1); 1861 ST_DWORD(&tbl[FSI_Free_Count], n_clust - 1);
1862 ST_DWORD(&tbl[FSI_Nxt_Free], 0xFFFFFFFF); 1862 ST_DWORD(&tbl[FSI_Nxt_Free], 0xFFFFFFFF);
1863 disk_write(drv, tbl, b_part+1, 1); 1863 disk_write(drv, tbl, b_part+1, 1);
1864 disk_write(drv, tbl, b_part+7, 1); 1864 disk_write(drv, tbl, b_part+7, 1);
1865 } 1865 }
1866   1866  
1867 return (disk_ioctl(drv, CTRL_SYNC, NULL) == RES_OK) ? FR_OK : FR_RW_ERROR; 1867 return (disk_ioctl(drv, CTRL_SYNC, NULL) == RES_OK) ? FR_OK : FR_RW_ERROR;
1868 } 1868 }
1869   1869  
1870 #endif /* _USE_MKFS && !_FS_READONLY */ 1870 #endif /* _USE_MKFS && !_FS_READONLY */
1871   1871  
1872   1872  
1873   1873  
1874   1874  
1875 #if _USE_STRFUNC >= 1 1875 #if _USE_STRFUNC >= 1
1876 /*-----------------------------------------------------------------------*/ 1876 /*-----------------------------------------------------------------------*/
1877 /* Get a string from the file */ 1877 /* Get a string from the file */
1878 /*-----------------------------------------------------------------------*/ 1878 /*-----------------------------------------------------------------------*/
1879 char* fgets ( 1879 char* fgets (
1880 char* buff, /* Pointer to the string buffer to read */ 1880 char* buff, /* Pointer to the string buffer to read */
1881 int len, /* Size of string buffer */ 1881 int len, /* Size of string buffer */
1882 FIL* fil /* Pointer to the file object */ 1882 FIL* fil /* Pointer to the file object */
1883 ) 1883 )
1884 { 1884 {
1885 int i = 0; 1885 int i = 0;
1886 char *p = buff; 1886 char *p = buff;
1887 UINT rc; 1887 UINT rc;
1888   1888  
1889   1889  
1890 while (i < len - 1) { /* Read bytes until buffer gets filled */ 1890 while (i < len - 1) { /* Read bytes until buffer gets filled */
1891 f_read(fil, p, 1, &rc); 1891 f_read(fil, p, 1, &rc);
1892 if (rc != 1) break; /* Break when no data to read */ 1892 if (rc != 1) break; /* Break when no data to read */
1893 #if _USE_STRFUNC >= 2 1893 #if _USE_STRFUNC >= 2
1894 if (*p == '\r') continue; /* Strip '\r' */ 1894 if (*p == '\r') continue; /* Strip '\r' */
1895 #endif 1895 #endif
1896 i++; 1896 i++;
1897 if (*p++ == '\n') break; /* Break when reached end of line */ 1897 if (*p++ == '\n') break; /* Break when reached end of line */
1898 } 1898 }
1899 *p = 0; 1899 *p = 0;
1900 return i ? buff : 0; /* When no data read (eof or error), return with error. */ 1900 return i ? buff : 0; /* When no data read (eof or error), return with error. */
1901 } 1901 }
1902   1902  
1903   1903  
1904   1904  
1905 #if !_FS_READONLY 1905 #if !_FS_READONLY
1906 #include <stdarg.h> 1906 #include <stdarg.h>
1907 /*-----------------------------------------------------------------------*/ 1907 /*-----------------------------------------------------------------------*/
1908 /* Put a character to the file */ 1908 /* Put a character to the file */
1909 /*-----------------------------------------------------------------------*/ 1909 /*-----------------------------------------------------------------------*/
1910 int fputc ( 1910 int fputc (
1911 int chr, /* A character to be output */ 1911 int chr, /* A character to be output */
1912 FIL* fil /* Ponter to the file object */ 1912 FIL* fil /* Ponter to the file object */
1913 ) 1913 )
1914 { 1914 {
1915 UINT bw; 1915 UINT bw;
1916 char c; 1916 char c;
1917   1917  
1918   1918  
1919 #if _USE_STRFUNC >= 2 1919 #if _USE_STRFUNC >= 2
1920 if (chr == '\n') fputc ('\r', fil); /* LF -> CRLF conversion */ 1920 if (chr == '\n') fputc ('\r', fil); /* LF -> CRLF conversion */
1921 #endif 1921 #endif
1922 if (!fil) { /* Special value may be used to switch the destination to any other device */ 1922 if (!fil) { /* Special value may be used to switch the destination to any other device */
1923 /* put_console(chr); */ 1923 /* put_console(chr); */
1924 return chr; 1924 return chr;
1925 } 1925 }
1926 c = (char)chr; 1926 c = (char)chr;
1927 f_write(fil, &c, 1, &bw); /* Write a byte to the file */ 1927 f_write(fil, &c, 1, &bw); /* Write a byte to the file */
1928 return bw ? chr : EOF; /* Return the resulut */ 1928 return bw ? chr : EOF; /* Return the resulut */
1929 } 1929 }
1930   1930  
1931   1931  
1932   1932  
1933   1933  
1934 /*-----------------------------------------------------------------------*/ 1934 /*-----------------------------------------------------------------------*/
1935 /* Put a string to the file */ 1935 /* Put a string to the file */
1936 /*-----------------------------------------------------------------------*/ 1936 /*-----------------------------------------------------------------------*/
1937 int fputs ( 1937 int fputs (
1938 const char* str, /* Pointer to the string to be output */ 1938 const char* str, /* Pointer to the string to be output */
1939 FIL* fil /* Pointer to the file object */ 1939 FIL* fil /* Pointer to the file object */
1940 ) 1940 )
1941 { 1941 {
1942 int n; 1942 int n;
1943   1943  
1944   1944  
1945 for (n = 0; *str; str++, n++) { 1945 for (n = 0; *str; str++, n++) {
1946 if (fputc(*str, fil) == EOF) return EOF; 1946 if (fputc(*str, fil) == EOF) return EOF;
1947 } 1947 }
1948 return n; 1948 return n;
1949 } 1949 }
1950   1950  
1951   1951  
1952   1952  
1953   1953  
1954 /*-----------------------------------------------------------------------*/ 1954 /*-----------------------------------------------------------------------*/
1955 /* Put a formatted string to the file */ 1955 /* Put a formatted string to the file */
1956 /*-----------------------------------------------------------------------*/ 1956 /*-----------------------------------------------------------------------*/
1957 int fprintf ( 1957 int fprintf (
1958 FIL* fil, /* Pointer to the file object */ 1958 FIL* fil, /* Pointer to the file object */
1959 const char* str, /* Pointer to the format string */ 1959 const char* str, /* Pointer to the format string */
1960 ... /* Optional arguments... */ 1960 ... /* Optional arguments... */
1961 ) 1961 )
1962 { 1962 {
1963 va_list arp; 1963 va_list arp;
1964 UCHAR c, f, r; 1964 UCHAR c, f, r;
1965 ULONG val; 1965 ULONG val;
1966 char s[16]; 1966 char s[16];
1967 int i, w, res, cc; 1967 int i, w, res, cc;
1968   1968  
1969   1969  
1970 va_start(arp, str); 1970 va_start(arp, str);
1971   1971  
1972 for (cc = res = 0; cc != EOF; res += cc) { 1972 for (cc = res = 0; cc != EOF; res += cc) {
1973 c = *str++; 1973 c = *str++;
1974 if (c == 0) break; /* End of string */ 1974 if (c == 0) break; /* End of string */
1975 if (c != '%') { /* Non escape cahracter */ 1975 if (c != '%') { /* Non escape cahracter */
1976 cc = fputc(c, fil); 1976 cc = fputc(c, fil);
1977 if (cc != EOF) cc = 1; 1977 if (cc != EOF) cc = 1;
1978 continue; 1978 continue;
1979 } 1979 }
1980 w = f = 0; 1980 w = f = 0;
1981 c = *str++; 1981 c = *str++;
1982 if (c == '0') { /* Flag: '0' padding */ 1982 if (c == '0') { /* Flag: '0' padding */
1983 f = 1; c = *str++; 1983 f = 1; c = *str++;
1984 } 1984 }
1985 while (c >= '0' && c <= '9') { /* Precision */ 1985 while (c >= '0' && c <= '9') { /* Precision */
1986 w = w * 10 + (c - '0'); 1986 w = w * 10 + (c - '0');
1987 c = *str++; 1987 c = *str++;
1988 } 1988 }
1989 if (c == 'l') { /* Prefix: Size is long int */ 1989 if (c == 'l') { /* Prefix: Size is long int */
1990 f |= 2; c = *str++; 1990 f |= 2; c = *str++;
1991 } 1991 }
1992 if (c == 's') { /* Type is string */ 1992 if (c == 's') { /* Type is string */
1993 cc = fputs(va_arg(arp, char*), fil); 1993 cc = fputs(va_arg(arp, char*), fil);
1994 continue; 1994 continue;
1995 } 1995 }
1996 if (c == 'c') { /* Type is character */ 1996 if (c == 'c') { /* Type is character */
1997 cc = fputc(va_arg(arp, char), fil); 1997 cc = fputc(va_arg(arp, char), fil);
1998 if (cc != EOF) cc = 1; 1998 if (cc != EOF) cc = 1;
1999 continue; 1999 continue;
2000 } 2000 }
2001 r = 0; 2001 r = 0;
2002 if (c == 'd') r = 10; /* Type is signed decimal */ 2002 if (c == 'd') r = 10; /* Type is signed decimal */
2003 if (c == 'u') r = 10; /* Type is unsigned decimal */ 2003 if (c == 'u') r = 10; /* Type is unsigned decimal */
2004 if (c == 'X') r = 16; /* Type is unsigned hexdecimal */ 2004 if (c == 'X') r = 16; /* Type is unsigned hexdecimal */
2005 if (r == 0) break; /* Unknown type */ 2005 if (r == 0) break; /* Unknown type */
2006 if (f & 2) { /* Get the value */ 2006 if (f & 2) { /* Get the value */
2007 val = (ULONG)va_arg(arp, long); 2007 val = (ULONG)va_arg(arp, long);
2008 } else { 2008 } else {
2009 val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int); 2009 val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
2010 } 2010 }
2011 /* Put numeral string */ 2011 /* Put numeral string */
2012 if (c == 'd') { 2012 if (c == 'd') {
2013 if (val >= 0x80000000) { 2013 if (val >= 0x80000000) {
2014 val = 0 - val; 2014 val = 0 - val;
2015 f |= 4; 2015 f |= 4;
2016 } 2016 }
2017 } 2017 }
2018 i = sizeof(s) - 1; s[i] = 0; 2018 i = sizeof(s) - 1; s[i] = 0;
2019 do { 2019 do {
2020 c = (UCHAR)(val % r + '0'); 2020 c = (UCHAR)(val % r + '0');
2021 if (c > '9') c += 7; 2021 if (c > '9') c += 7;
2022 s[--i] = c; 2022 s[--i] = c;
2023 val /= r; 2023 val /= r;
2024 } while (i && val); 2024 } while (i && val);
2025 if (i && (f & 4)) s[--i] = '-'; 2025 if (i && (f & 4)) s[--i] = '-';
2026 w = sizeof(s) - 1 - w; 2026 w = sizeof(s) - 1 - w;
2027 while (i && i > w) s[--i] = (f & 1) ? '0' : ' '; 2027 while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
2028 cc = fputs(&s[i], fil); 2028 cc = fputs(&s[i], fil);
2029 } 2029 }
2030   2030  
2031 va_end(arp); 2031 va_end(arp);
2032 return (cc == EOF) ? cc : res; 2032 return (cc == EOF) ? cc : res;
2033 } 2033 }
2034   2034  
2035 #endif /* !_FS_READONLY */ 2035 #endif /* !_FS_READONLY */
2036 #endif /* _USE_STRFUNC >= 1*/ 2036 #endif /* _USE_STRFUNC >= 1*/