| 1 |
606 |
jeremybenn |
/*----------------------------------------------------------------------------/
|
| 2 |
|
|
/ FatFs - FAT file system module R0.07e (C)ChaN, 2009
|
| 3 |
|
|
/-----------------------------------------------------------------------------/
|
| 4 |
|
|
/ FatFs module is a generic FAT file system module for small embedded systems.
|
| 5 |
|
|
/ This is a free software that opened for education, research and commercial
|
| 6 |
|
|
/ developments under license policy of following trems.
|
| 7 |
|
|
/
|
| 8 |
|
|
/ Copyright (C) 2009, ChaN, all right reserved.
|
| 9 |
|
|
/
|
| 10 |
|
|
/ * The FatFs module is a free software and there is NO WARRANTY.
|
| 11 |
|
|
/ * No restriction on use. You can use, modify and redistribute it for
|
| 12 |
|
|
/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
|
| 13 |
|
|
/ * Redistributions of source code must retain the above copyright notice.
|
| 14 |
|
|
/
|
| 15 |
|
|
/-----------------------------------------------------------------------------/
|
| 16 |
|
|
/ Feb 26,'06 R0.00 Prototype.
|
| 17 |
|
|
/
|
| 18 |
|
|
/ Apr 29,'06 R0.01 First stable version.
|
| 19 |
|
|
/
|
| 20 |
|
|
/ Jun 01,'06 R0.02 Added FAT12 support.
|
| 21 |
|
|
/ Removed unbuffered mode.
|
| 22 |
|
|
/ Fixed a problem on small (<32M) patition.
|
| 23 |
|
|
/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
|
| 24 |
|
|
/
|
| 25 |
|
|
/ Sep 22,'06 R0.03 Added f_rename().
|
| 26 |
|
|
/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
|
| 27 |
|
|
/ Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.
|
| 28 |
|
|
/ Fixed f_mkdir() creates incorrect directory on FAT32.
|
| 29 |
|
|
/
|
| 30 |
|
|
/ Feb 04,'07 R0.04 Supported multiple drive system.
|
| 31 |
|
|
/ Changed some interfaces for multiple drive system.
|
| 32 |
|
|
/ Changed f_mountdrv() to f_mount().
|
| 33 |
|
|
/ Added f_mkfs().
|
| 34 |
|
|
/ Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.
|
| 35 |
|
|
/ Added a capability of extending file size to f_lseek().
|
| 36 |
|
|
/ Added minimization level 3.
|
| 37 |
|
|
/ Fixed an endian sensitive code in f_mkfs().
|
| 38 |
|
|
/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
|
| 39 |
|
|
/ Added FSInfo support.
|
| 40 |
|
|
/ Fixed DBCS name can result FR_INVALID_NAME.
|
| 41 |
|
|
/ Fixed short seek (<= csize) collapses the file object.
|
| 42 |
|
|
/
|
| 43 |
|
|
/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
|
| 44 |
|
|
/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
|
| 45 |
|
|
/ Fixed f_mkdir() on FAT32 creates incorrect directory.
|
| 46 |
|
|
/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
|
| 47 |
|
|
/ Fixed off by one error at FAT sub-type determination.
|
| 48 |
|
|
/ Fixed btr in f_read() can be mistruncated.
|
| 49 |
|
|
/ Fixed cached sector is not flushed when create and close
|
| 50 |
|
|
/ without write.
|
| 51 |
|
|
/
|
| 52 |
|
|
/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
|
| 53 |
|
|
/ Improved performance of f_lseek() on moving to the same
|
| 54 |
|
|
/ or following cluster.
|
| 55 |
|
|
/
|
| 56 |
|
|
/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
|
| 57 |
|
|
/ Added long file name support.
|
| 58 |
|
|
/ Added multiple code page support.
|
| 59 |
|
|
/ Added re-entrancy for multitask operation.
|
| 60 |
|
|
/ Added auto cluster size selection to f_mkfs().
|
| 61 |
|
|
/ Added rewind option to f_readdir().
|
| 62 |
|
|
/ Changed result code of critical errors.
|
| 63 |
|
|
/ Renamed string functions to avoid name collision.
|
| 64 |
|
|
/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
|
| 65 |
|
|
/ Added multiple sector size support.
|
| 66 |
|
|
/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
|
| 67 |
|
|
/ Fixed wrong cache control in f_lseek().
|
| 68 |
|
|
/ Added relative path feature.
|
| 69 |
|
|
/ Added f_chdir() and f_chdrive().
|
| 70 |
|
|
/ Added proper case conversion to extended char.
|
| 71 |
|
|
/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
|
| 72 |
|
|
/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
|
| 73 |
|
|
/ Fixed name matching error on the 13 char boundary.
|
| 74 |
|
|
/ Added a configuration option, _LFN_UNICODE.
|
| 75 |
|
|
/ Changed f_readdir() to return the SFN with always upper
|
| 76 |
|
|
/ case on non-LFN cfg.
|
| 77 |
|
|
/---------------------------------------------------------------------------*/
|
| 78 |
|
|
|
| 79 |
|
|
#include "ff.h" /* FatFs configurations and declarations */
|
| 80 |
|
|
#include "diskio.h" /* Declarations of low level disk I/O functions */
|
| 81 |
|
|
|
| 82 |
|
|
/*--------------------------------------------------------------------------
|
| 83 |
|
|
|
| 84 |
|
|
Module Private Definitions
|
| 85 |
|
|
|
| 86 |
|
|
---------------------------------------------------------------------------*/
|
| 87 |
|
|
|
| 88 |
|
|
#if _FATFS != 0x007E
|
| 89 |
|
|
#error Wrong include file (ff.h).
|
| 90 |
|
|
#endif
|
| 91 |
|
|
|
| 92 |
|
|
#if _FS_REENTRANT
|
| 93 |
|
|
#if _USE_LFN == 1
|
| 94 |
|
|
#error Static LFN work area must not be used in re-entrant configuration.
|
| 95 |
|
|
#endif
|
| 96 |
|
|
#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
|
| 97 |
|
|
#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
|
| 98 |
|
|
|
| 99 |
|
|
#else
|
| 100 |
|
|
#define ENTER_FF(fs)
|
| 101 |
|
|
#define LEAVE_FF(fs, res) return res
|
| 102 |
|
|
|
| 103 |
|
|
#endif
|
| 104 |
|
|
|
| 105 |
|
|
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
|
| 106 |
|
|
|
| 107 |
|
|
#ifndef NULL
|
| 108 |
|
|
#define NULL 0
|
| 109 |
|
|
#endif
|
| 110 |
|
|
|
| 111 |
|
|
/* Name status flags */
|
| 112 |
|
|
#define NS 11 /* Offset of name status byte */
|
| 113 |
|
|
#define NS_LOSS 0x01 /* Out of 8.3 format */
|
| 114 |
|
|
#define NS_LFN 0x02 /* Force to create LFN entry */
|
| 115 |
|
|
#define NS_LAST 0x04 /* Last segment */
|
| 116 |
|
|
#define NS_BODY 0x08 /* Lower case flag (body) */
|
| 117 |
|
|
#define NS_EXT 0x10 /* Lower case flag (ext) */
|
| 118 |
|
|
#define NS_DOT 0x20 /* Dot entry */
|
| 119 |
|
|
|
| 120 |
|
|
|
| 121 |
|
|
|
| 122 |
|
|
|
| 123 |
|
|
/*--------------------------------------------------------------------------
|
| 124 |
|
|
|
| 125 |
|
|
Private Work Area
|
| 126 |
|
|
|
| 127 |
|
|
---------------------------------------------------------------------------*/
|
| 128 |
|
|
|
| 129 |
|
|
#if _DRIVES < 1 || _DRIVES > 9
|
| 130 |
|
|
#error Number of drives must be 1-9.
|
| 131 |
|
|
#endif
|
| 132 |
|
|
static
|
| 133 |
|
|
FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
|
| 134 |
|
|
|
| 135 |
|
|
static
|
| 136 |
|
|
WORD Fsid; /* File system mount ID */
|
| 137 |
|
|
|
| 138 |
|
|
#if _FS_RPATH
|
| 139 |
|
|
static
|
| 140 |
|
|
BYTE Drive; /* Current drive */
|
| 141 |
|
|
#endif
|
| 142 |
|
|
|
| 143 |
|
|
|
| 144 |
|
|
#if _USE_LFN == 1 /* LFN with static LFN working buffer */
|
| 145 |
|
|
static
|
| 146 |
|
|
WCHAR LfnBuf[_MAX_LFN + 1];
|
| 147 |
|
|
#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR *lp = LfnBuf
|
| 148 |
|
|
#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
|
| 149 |
|
|
|
| 150 |
|
|
#elif _USE_LFN > 1 /* LFN with dynamic LFN working buffer */
|
| 151 |
|
|
#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
|
| 152 |
|
|
#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
|
| 153 |
|
|
|
| 154 |
|
|
#else /* No LFN */
|
| 155 |
|
|
#define NAMEBUF(sp,lp) BYTE sp[12]
|
| 156 |
|
|
#define INITBUF(dj,sp,lp) dj.fn = sp
|
| 157 |
|
|
|
| 158 |
|
|
#endif
|
| 159 |
|
|
|
| 160 |
|
|
|
| 161 |
|
|
|
| 162 |
|
|
|
| 163 |
|
|
/*--------------------------------------------------------------------------
|
| 164 |
|
|
|
| 165 |
|
|
Module Private Functions
|
| 166 |
|
|
|
| 167 |
|
|
---------------------------------------------------------------------------*/
|
| 168 |
|
|
|
| 169 |
|
|
|
| 170 |
|
|
/*-----------------------------------------------------------------------*/
|
| 171 |
|
|
/* String functions */
|
| 172 |
|
|
/*-----------------------------------------------------------------------*/
|
| 173 |
|
|
|
| 174 |
|
|
/* Copy memory to memory */
|
| 175 |
|
|
static
|
| 176 |
|
|
void mem_cpy (void* dst, const void* src, int cnt) {
|
| 177 |
|
|
char *d = (char*)dst;
|
| 178 |
|
|
const char *s = (const char *)src;
|
| 179 |
|
|
while (cnt--) *d++ = *s++;
|
| 180 |
|
|
}
|
| 181 |
|
|
|
| 182 |
|
|
/* Fill memory */
|
| 183 |
|
|
static
|
| 184 |
|
|
void mem_set (void* dst, int val, int cnt) {
|
| 185 |
|
|
char *d = (char*)dst;
|
| 186 |
|
|
while (cnt--) *d++ = (char)val;
|
| 187 |
|
|
}
|
| 188 |
|
|
|
| 189 |
|
|
/* Compare memory to memory */
|
| 190 |
|
|
static
|
| 191 |
|
|
int mem_cmp (const void* dst, const void* src, int cnt) {
|
| 192 |
|
|
const char *d = (const char *)dst, *s = (const char *)src;
|
| 193 |
|
|
int r = 0;
|
| 194 |
|
|
while (cnt-- && (r = *d++ - *s++) == 0) ;
|
| 195 |
|
|
return r;
|
| 196 |
|
|
}
|
| 197 |
|
|
|
| 198 |
|
|
/* Check if chr is contained in the string */
|
| 199 |
|
|
static
|
| 200 |
|
|
int chk_chr (const char* str, int chr) {
|
| 201 |
|
|
while (*str && *str != chr) str++;
|
| 202 |
|
|
return *str;
|
| 203 |
|
|
}
|
| 204 |
|
|
|
| 205 |
|
|
|
| 206 |
|
|
|
| 207 |
|
|
/*-----------------------------------------------------------------------*/
|
| 208 |
|
|
/* Request/Release grant to access the volume */
|
| 209 |
|
|
/*-----------------------------------------------------------------------*/
|
| 210 |
|
|
#if _FS_REENTRANT
|
| 211 |
|
|
|
| 212 |
|
|
static
|
| 213 |
|
|
BOOL lock_fs (
|
| 214 |
|
|
FATFS *fs /* File system object */
|
| 215 |
|
|
)
|
| 216 |
|
|
{
|
| 217 |
|
|
return ff_req_grant(fs->sobj);
|
| 218 |
|
|
}
|
| 219 |
|
|
|
| 220 |
|
|
|
| 221 |
|
|
static
|
| 222 |
|
|
void unlock_fs (
|
| 223 |
|
|
FATFS *fs, /* File system object */
|
| 224 |
|
|
FRESULT res /* Result code to be returned */
|
| 225 |
|
|
)
|
| 226 |
|
|
{
|
| 227 |
|
|
if (res != FR_NOT_ENABLED &&
|
| 228 |
|
|
res != FR_INVALID_DRIVE &&
|
| 229 |
|
|
res != FR_INVALID_OBJECT &&
|
| 230 |
|
|
res != FR_TIMEOUT) {
|
| 231 |
|
|
ff_rel_grant(fs->sobj);
|
| 232 |
|
|
}
|
| 233 |
|
|
}
|
| 234 |
|
|
#endif
|
| 235 |
|
|
|
| 236 |
|
|
|
| 237 |
|
|
|
| 238 |
|
|
/*-----------------------------------------------------------------------*/
|
| 239 |
|
|
/* Change window offset */
|
| 240 |
|
|
/*-----------------------------------------------------------------------*/
|
| 241 |
|
|
|
| 242 |
|
|
static
|
| 243 |
|
|
FRESULT move_window (
|
| 244 |
|
|
FATFS *fs, /* File system object */
|
| 245 |
|
|
DWORD sector /* Sector number to make apperance in the fs->win[] */
|
| 246 |
|
|
) /* Move to zero only writes back dirty window */
|
| 247 |
|
|
{
|
| 248 |
|
|
DWORD wsect;
|
| 249 |
|
|
|
| 250 |
|
|
|
| 251 |
|
|
wsect = fs->winsect;
|
| 252 |
|
|
if (wsect != sector) { /* Changed current window */
|
| 253 |
|
|
#if !_FS_READONLY
|
| 254 |
|
|
if (fs->wflag) { /* Write back dirty window if needed */
|
| 255 |
|
|
if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
|
| 256 |
|
|
return FR_DISK_ERR;
|
| 257 |
|
|
fs->wflag = 0;
|
| 258 |
|
|
if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */
|
| 259 |
|
|
BYTE nf;
|
| 260 |
|
|
for (nf = fs->n_fats; nf > 1; nf--) { /* Refrect the change to all FAT copies */
|
| 261 |
|
|
wsect += fs->sects_fat;
|
| 262 |
|
|
disk_write(fs->drive, fs->win, wsect, 1);
|
| 263 |
|
|
}
|
| 264 |
|
|
}
|
| 265 |
|
|
}
|
| 266 |
|
|
#endif
|
| 267 |
|
|
if (sector) {
|
| 268 |
|
|
if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)
|
| 269 |
|
|
return FR_DISK_ERR;
|
| 270 |
|
|
fs->winsect = sector;
|
| 271 |
|
|
}
|
| 272 |
|
|
}
|
| 273 |
|
|
|
| 274 |
|
|
return FR_OK;
|
| 275 |
|
|
}
|
| 276 |
|
|
|
| 277 |
|
|
|
| 278 |
|
|
|
| 279 |
|
|
|
| 280 |
|
|
/*-----------------------------------------------------------------------*/
|
| 281 |
|
|
/* Clean-up cached data */
|
| 282 |
|
|
/*-----------------------------------------------------------------------*/
|
| 283 |
|
|
#if !_FS_READONLY
|
| 284 |
|
|
static
|
| 285 |
|
|
FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
|
| 286 |
|
|
FATFS *fs /* File system object */
|
| 287 |
|
|
)
|
| 288 |
|
|
{
|
| 289 |
|
|
FRESULT res;
|
| 290 |
|
|
|
| 291 |
|
|
|
| 292 |
|
|
res = move_window(fs, 0);
|
| 293 |
|
|
if (res == FR_OK) {
|
| 294 |
|
|
/* Update FSInfo sector if needed */
|
| 295 |
|
|
if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
|
| 296 |
|
|
fs->winsect = 0;
|
| 297 |
|
|
mem_set(fs->win, 0, 512);
|
| 298 |
|
|
ST_WORD(fs->win+BS_55AA, 0xAA55);
|
| 299 |
|
|
ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
|
| 300 |
|
|
ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
|
| 301 |
|
|
ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
|
| 302 |
|
|
ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
|
| 303 |
|
|
disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
|
| 304 |
|
|
fs->fsi_flag = 0;
|
| 305 |
|
|
}
|
| 306 |
|
|
/* Make sure that no pending write process in the physical drive */
|
| 307 |
|
|
if (disk_ioctl(fs->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
|
| 308 |
|
|
res = FR_DISK_ERR;
|
| 309 |
|
|
}
|
| 310 |
|
|
|
| 311 |
|
|
return res;
|
| 312 |
|
|
}
|
| 313 |
|
|
#endif
|
| 314 |
|
|
|
| 315 |
|
|
|
| 316 |
|
|
|
| 317 |
|
|
|
| 318 |
|
|
/*-----------------------------------------------------------------------*/
|
| 319 |
|
|
/* FAT access - Read value of a FAT entry */
|
| 320 |
|
|
/*-----------------------------------------------------------------------*/
|
| 321 |
|
|
|
| 322 |
|
|
|
| 323 |
|
|
DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
|
| 324 |
|
|
FATFS *fs, /* File system object */
|
| 325 |
|
|
DWORD clst /* Cluster# to get the link information */
|
| 326 |
|
|
)
|
| 327 |
|
|
{
|
| 328 |
|
|
UINT wc, bc;
|
| 329 |
|
|
DWORD fsect;
|
| 330 |
|
|
|
| 331 |
|
|
|
| 332 |
|
|
if (clst < 2 || clst >= fs->max_clust) /* Range check */
|
| 333 |
|
|
return 1;
|
| 334 |
|
|
|
| 335 |
|
|
fsect = fs->fatbase;
|
| 336 |
|
|
switch (fs->fs_type) {
|
| 337 |
|
|
case FS_FAT12 :
|
| 338 |
|
|
bc = clst; bc += bc / 2;
|
| 339 |
|
|
if (move_window(fs, fsect + (bc / SS(fs)))) break;
|
| 340 |
|
|
wc = fs->win[bc & (SS(fs) - 1)]; bc++;
|
| 341 |
|
|
if (move_window(fs, fsect + (bc / SS(fs)))) break;
|
| 342 |
|
|
wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
|
| 343 |
|
|
return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
|
| 344 |
|
|
|
| 345 |
|
|
case FS_FAT16 :
|
| 346 |
|
|
if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;
|
| 347 |
|
|
return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
|
| 348 |
|
|
|
| 349 |
|
|
case FS_FAT32 :
|
| 350 |
|
|
if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;
|
| 351 |
|
|
return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
|
| 352 |
|
|
}
|
| 353 |
|
|
|
| 354 |
|
|
return 0xFFFFFFFF; /* An error occured at the disk I/O layer */
|
| 355 |
|
|
}
|
| 356 |
|
|
|
| 357 |
|
|
|
| 358 |
|
|
|
| 359 |
|
|
|
| 360 |
|
|
/*-----------------------------------------------------------------------*/
|
| 361 |
|
|
/* FAT access - Change value of a FAT entry */
|
| 362 |
|
|
/*-----------------------------------------------------------------------*/
|
| 363 |
|
|
#if !_FS_READONLY
|
| 364 |
|
|
|
| 365 |
|
|
FRESULT put_fat (
|
| 366 |
|
|
FATFS *fs, /* File system object */
|
| 367 |
|
|
DWORD clst, /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */
|
| 368 |
|
|
DWORD val /* New value to mark the cluster */
|
| 369 |
|
|
)
|
| 370 |
|
|
{
|
| 371 |
|
|
UINT bc;
|
| 372 |
|
|
BYTE *p;
|
| 373 |
|
|
DWORD fsect;
|
| 374 |
|
|
FRESULT res;
|
| 375 |
|
|
|
| 376 |
|
|
|
| 377 |
|
|
if (clst < 2 || clst >= fs->max_clust) { /* Range check */
|
| 378 |
|
|
res = FR_INT_ERR;
|
| 379 |
|
|
|
| 380 |
|
|
} else {
|
| 381 |
|
|
fsect = fs->fatbase;
|
| 382 |
|
|
switch (fs->fs_type) {
|
| 383 |
|
|
case FS_FAT12 :
|
| 384 |
|
|
bc = clst; bc += bc / 2;
|
| 385 |
|
|
res = move_window(fs, fsect + (bc / SS(fs)));
|
| 386 |
|
|
if (res != FR_OK) break;
|
| 387 |
|
|
p = &fs->win[bc & (SS(fs) - 1)];
|
| 388 |
|
|
*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
|
| 389 |
|
|
bc++;
|
| 390 |
|
|
fs->wflag = 1;
|
| 391 |
|
|
res = move_window(fs, fsect + (bc / SS(fs)));
|
| 392 |
|
|
if (res != FR_OK) break;
|
| 393 |
|
|
p = &fs->win[bc & (SS(fs) - 1)];
|
| 394 |
|
|
*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
|
| 395 |
|
|
break;
|
| 396 |
|
|
|
| 397 |
|
|
case FS_FAT16 :
|
| 398 |
|
|
res = move_window(fs, fsect + (clst / (SS(fs) / 2)));
|
| 399 |
|
|
if (res != FR_OK) break;
|
| 400 |
|
|
ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
|
| 401 |
|
|
break;
|
| 402 |
|
|
|
| 403 |
|
|
case FS_FAT32 :
|
| 404 |
|
|
res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
|
| 405 |
|
|
if (res != FR_OK) break;
|
| 406 |
|
|
ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
|
| 407 |
|
|
break;
|
| 408 |
|
|
|
| 409 |
|
|
default :
|
| 410 |
|
|
res = FR_INT_ERR;
|
| 411 |
|
|
}
|
| 412 |
|
|
fs->wflag = 1;
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
|
|
return res;
|
| 416 |
|
|
}
|
| 417 |
|
|
#endif /* !_FS_READONLY */
|
| 418 |
|
|
|
| 419 |
|
|
|
| 420 |
|
|
|
| 421 |
|
|
|
| 422 |
|
|
/*-----------------------------------------------------------------------*/
|
| 423 |
|
|
/* FAT handling - Remove a cluster chain */
|
| 424 |
|
|
/*-----------------------------------------------------------------------*/
|
| 425 |
|
|
#if !_FS_READONLY
|
| 426 |
|
|
static
|
| 427 |
|
|
FRESULT remove_chain (
|
| 428 |
|
|
FATFS *fs, /* File system object */
|
| 429 |
|
|
DWORD clst /* Cluster# to remove a chain from */
|
| 430 |
|
|
)
|
| 431 |
|
|
{
|
| 432 |
|
|
FRESULT res;
|
| 433 |
|
|
DWORD nxt;
|
| 434 |
|
|
|
| 435 |
|
|
|
| 436 |
|
|
if (clst < 2 || clst >= fs->max_clust) { /* Check the range of cluster# */
|
| 437 |
|
|
res = FR_INT_ERR;
|
| 438 |
|
|
|
| 439 |
|
|
} else {
|
| 440 |
|
|
res = FR_OK;
|
| 441 |
|
|
while (clst < fs->max_clust) { /* Not a last link? */
|
| 442 |
|
|
nxt = get_fat(fs, clst); /* Get cluster status */
|
| 443 |
|
|
if (nxt == 0) break; /* Empty cluster? */
|
| 444 |
|
|
if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
|
| 445 |
|
|
if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
|
| 446 |
|
|
res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
|
| 447 |
|
|
if (res != FR_OK) break;
|
| 448 |
|
|
if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
|
| 449 |
|
|
fs->free_clust++;
|
| 450 |
|
|
fs->fsi_flag = 1;
|
| 451 |
|
|
}
|
| 452 |
|
|
clst = nxt; /* Next cluster */
|
| 453 |
|
|
}
|
| 454 |
|
|
}
|
| 455 |
|
|
|
| 456 |
|
|
return res;
|
| 457 |
|
|
}
|
| 458 |
|
|
#endif
|
| 459 |
|
|
|
| 460 |
|
|
|
| 461 |
|
|
|
| 462 |
|
|
|
| 463 |
|
|
/*-----------------------------------------------------------------------*/
|
| 464 |
|
|
/* FAT handling - Stretch or Create a cluster chain */
|
| 465 |
|
|
/*-----------------------------------------------------------------------*/
|
| 466 |
|
|
#if !_FS_READONLY
|
| 467 |
|
|
static
|
| 468 |
|
|
DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
|
| 469 |
|
|
FATFS *fs, /* File system object */
|
| 470 |
|
|
DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
|
| 471 |
|
|
)
|
| 472 |
|
|
{
|
| 473 |
|
|
DWORD cs, ncl, scl, mcl;
|
| 474 |
|
|
|
| 475 |
|
|
|
| 476 |
|
|
mcl = fs->max_clust;
|
| 477 |
|
|
if (clst == 0) { /* Create new chain */
|
| 478 |
|
|
scl = fs->last_clust; /* Get suggested start point */
|
| 479 |
|
|
if (scl == 0 || scl >= mcl) scl = 1;
|
| 480 |
|
|
}
|
| 481 |
|
|
else { /* Stretch existing chain */
|
| 482 |
|
|
cs = get_fat(fs, clst); /* Check the cluster status */
|
| 483 |
|
|
if (cs < 2) return 1; /* It is an invalid cluster */
|
| 484 |
|
|
if (cs < mcl) return cs; /* It is already followed by next cluster */
|
| 485 |
|
|
scl = clst;
|
| 486 |
|
|
}
|
| 487 |
|
|
|
| 488 |
|
|
ncl = scl; /* Start cluster */
|
| 489 |
|
|
for (;;) {
|
| 490 |
|
|
ncl++; /* Next cluster */
|
| 491 |
|
|
if (ncl >= mcl) { /* Wrap around */
|
| 492 |
|
|
ncl = 2;
|
| 493 |
|
|
if (ncl > scl) return 0; /* No free custer */
|
| 494 |
|
|
}
|
| 495 |
|
|
cs = get_fat(fs, ncl); /* Get the cluster status */
|
| 496 |
|
|
if (cs == 0) break; /* Found a free cluster */
|
| 497 |
|
|
if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */
|
| 498 |
|
|
return cs;
|
| 499 |
|
|
if (ncl == scl) return 0; /* No free custer */
|
| 500 |
|
|
}
|
| 501 |
|
|
|
| 502 |
|
|
if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "in use" */
|
| 503 |
|
|
return 0xFFFFFFFF;
|
| 504 |
|
|
if (clst != 0) { /* Link it to the previous one if needed */
|
| 505 |
|
|
if (put_fat(fs, clst, ncl))
|
| 506 |
|
|
return 0xFFFFFFFF;
|
| 507 |
|
|
}
|
| 508 |
|
|
|
| 509 |
|
|
fs->last_clust = ncl; /* Update FSINFO */
|
| 510 |
|
|
if (fs->free_clust != 0xFFFFFFFF) {
|
| 511 |
|
|
fs->free_clust--;
|
| 512 |
|
|
fs->fsi_flag = 1;
|
| 513 |
|
|
}
|
| 514 |
|
|
|
| 515 |
|
|
return ncl; /* Return new cluster number */
|
| 516 |
|
|
}
|
| 517 |
|
|
#endif /* !_FS_READONLY */
|
| 518 |
|
|
|
| 519 |
|
|
|
| 520 |
|
|
|
| 521 |
|
|
|
| 522 |
|
|
/*-----------------------------------------------------------------------*/
|
| 523 |
|
|
/* Get sector# from cluster# */
|
| 524 |
|
|
/*-----------------------------------------------------------------------*/
|
| 525 |
|
|
|
| 526 |
|
|
|
| 527 |
|
|
DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
|
| 528 |
|
|
FATFS *fs, /* File system object */
|
| 529 |
|
|
DWORD clst /* Cluster# to be converted */
|
| 530 |
|
|
)
|
| 531 |
|
|
{
|
| 532 |
|
|
clst -= 2;
|
| 533 |
|
|
if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
|
| 534 |
|
|
return clst * fs->csize + fs->database;
|
| 535 |
|
|
}
|
| 536 |
|
|
|
| 537 |
|
|
|
| 538 |
|
|
|
| 539 |
|
|
|
| 540 |
|
|
/*-----------------------------------------------------------------------*/
|
| 541 |
|
|
/* Directory handling - Seek directory index */
|
| 542 |
|
|
/*-----------------------------------------------------------------------*/
|
| 543 |
|
|
|
| 544 |
|
|
static
|
| 545 |
|
|
FRESULT dir_seek (
|
| 546 |
|
|
DIR *dj, /* Pointer to directory object */
|
| 547 |
|
|
WORD idx /* Directory index number */
|
| 548 |
|
|
)
|
| 549 |
|
|
{
|
| 550 |
|
|
DWORD clst;
|
| 551 |
|
|
WORD ic;
|
| 552 |
|
|
|
| 553 |
|
|
|
| 554 |
|
|
dj->index = idx;
|
| 555 |
|
|
clst = dj->sclust;
|
| 556 |
|
|
if (clst == 1 || clst >= dj->fs->max_clust) /* Check start cluster range */
|
| 557 |
|
|
return FR_INT_ERR;
|
| 558 |
|
|
if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
|
| 559 |
|
|
clst = dj->fs->dirbase;
|
| 560 |
|
|
|
| 561 |
|
|
if (clst == 0) { /* Static table */
|
| 562 |
|
|
dj->clust = clst;
|
| 563 |
|
|
if (idx >= dj->fs->n_rootdir) /* Index is out of range */
|
| 564 |
|
|
return FR_INT_ERR;
|
| 565 |
|
|
dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
|
| 566 |
|
|
}
|
| 567 |
|
|
else { /* Dynamic table */
|
| 568 |
|
|
ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
|
| 569 |
|
|
while (idx >= ic) { /* Follow cluster chain */
|
| 570 |
|
|
clst = get_fat(dj->fs, clst); /* Get next cluster */
|
| 571 |
|
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
|
| 572 |
|
|
if (clst < 2 || clst >= dj->fs->max_clust) /* Reached to end of table or int error */
|
| 573 |
|
|
return FR_INT_ERR;
|
| 574 |
|
|
idx -= ic;
|
| 575 |
|
|
}
|
| 576 |
|
|
dj->clust = clst;
|
| 577 |
|
|
dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
|
| 581 |
|
|
|
| 582 |
|
|
return FR_OK; /* Seek succeeded */
|
| 583 |
|
|
}
|
| 584 |
|
|
|
| 585 |
|
|
|
| 586 |
|
|
|
| 587 |
|
|
|
| 588 |
|
|
/*-----------------------------------------------------------------------*/
|
| 589 |
|
|
/* Directory handling - Move directory index next */
|
| 590 |
|
|
/*-----------------------------------------------------------------------*/
|
| 591 |
|
|
|
| 592 |
|
|
static
|
| 593 |
|
|
FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
|
| 594 |
|
|
DIR *dj, /* Pointer to directory object */
|
| 595 |
|
|
BOOL streach /* FALSE: Do not streach table, TRUE: Streach table if needed */
|
| 596 |
|
|
)
|
| 597 |
|
|
{
|
| 598 |
|
|
DWORD clst;
|
| 599 |
|
|
WORD i;
|
| 600 |
|
|
|
| 601 |
|
|
|
| 602 |
|
|
i = dj->index + 1;
|
| 603 |
|
|
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
|
| 604 |
|
|
return FR_NO_FILE;
|
| 605 |
|
|
|
| 606 |
|
|
if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
|
| 607 |
|
|
dj->sect++; /* Next sector */
|
| 608 |
|
|
|
| 609 |
|
|
if (dj->clust == 0) { /* Static table */
|
| 610 |
|
|
if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
|
| 611 |
|
|
return FR_NO_FILE;
|
| 612 |
|
|
}
|
| 613 |
|
|
else { /* Dynamic table */
|
| 614 |
|
|
if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
|
| 615 |
|
|
clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
|
| 616 |
|
|
if (clst <= 1) return FR_INT_ERR;
|
| 617 |
|
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
|
| 618 |
|
|
if (clst >= dj->fs->max_clust) { /* When it reached end of dynamic table */
|
| 619 |
|
|
#if !_FS_READONLY
|
| 620 |
|
|
BYTE c;
|
| 621 |
|
|
if (!streach) return FR_NO_FILE; /* When do not streach, report EOT */
|
| 622 |
|
|
clst = create_chain(dj->fs, dj->clust); /* Streach cluster chain */
|
| 623 |
|
|
if (clst == 0) return FR_DENIED; /* No free cluster */
|
| 624 |
|
|
if (clst == 1) return FR_INT_ERR;
|
| 625 |
|
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
|
| 626 |
|
|
/* Clean-up streached table */
|
| 627 |
|
|
if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
|
| 628 |
|
|
mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
|
| 629 |
|
|
dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
|
| 630 |
|
|
for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
|
| 631 |
|
|
dj->fs->wflag = 1;
|
| 632 |
|
|
if (move_window(dj->fs, 0)) return FR_DISK_ERR;
|
| 633 |
|
|
dj->fs->winsect++;
|
| 634 |
|
|
}
|
| 635 |
|
|
dj->fs->winsect -= c; /* Rewind window address */
|
| 636 |
|
|
#else
|
| 637 |
|
|
return FR_NO_FILE; /* Report EOT */
|
| 638 |
|
|
#endif
|
| 639 |
|
|
}
|
| 640 |
|
|
dj->clust = clst; /* Initialize data for new cluster */
|
| 641 |
|
|
dj->sect = clust2sect(dj->fs, clst);
|
| 642 |
|
|
}
|
| 643 |
|
|
}
|
| 644 |
|
|
}
|
| 645 |
|
|
|
| 646 |
|
|
dj->index = i;
|
| 647 |
|
|
dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
|
| 648 |
|
|
|
| 649 |
|
|
return FR_OK;
|
| 650 |
|
|
}
|
| 651 |
|
|
|
| 652 |
|
|
|
| 653 |
|
|
|
| 654 |
|
|
|
| 655 |
|
|
/*-----------------------------------------------------------------------*/
|
| 656 |
|
|
/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
|
| 657 |
|
|
/*-----------------------------------------------------------------------*/
|
| 658 |
|
|
#if _USE_LFN
|
| 659 |
|
|
static
|
| 660 |
|
|
const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
|
| 661 |
|
|
|
| 662 |
|
|
|
| 663 |
|
|
static
|
| 664 |
|
|
BOOL cmp_lfn ( /* TRUE:Matched, FALSE:Not matched */
|
| 665 |
|
|
WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
|
| 666 |
|
|
BYTE *dir /* Pointer to the directory entry containing a part of LFN */
|
| 667 |
|
|
)
|
| 668 |
|
|
{
|
| 669 |
|
|
int i, s;
|
| 670 |
|
|
WCHAR wc, uc;
|
| 671 |
|
|
|
| 672 |
|
|
|
| 673 |
|
|
i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
|
| 674 |
|
|
s = 0; wc = 1;
|
| 675 |
|
|
do {
|
| 676 |
|
|
uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
|
| 677 |
|
|
if (wc) { /* Last char has not been processed */
|
| 678 |
|
|
wc = ff_wtoupper(uc); /* Convert it to upper case */
|
| 679 |
|
|
if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
|
| 680 |
|
|
return FALSE; /* Not matched */
|
| 681 |
|
|
} else {
|
| 682 |
|
|
if (uc != 0xFFFF) return FALSE; /* Check filler */
|
| 683 |
|
|
}
|
| 684 |
|
|
} while (++s < 13); /* Repeat until all chars in the entry are checked */
|
| 685 |
|
|
|
| 686 |
|
|
if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
|
| 687 |
|
|
return FALSE;
|
| 688 |
|
|
|
| 689 |
|
|
return TRUE; /* The part of LFN matched */
|
| 690 |
|
|
}
|
| 691 |
|
|
|
| 692 |
|
|
|
| 693 |
|
|
|
| 694 |
|
|
static
|
| 695 |
|
|
BOOL pick_lfn ( /* TRUE:Succeeded, FALSE:Buffer overflow */
|
| 696 |
|
|
WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
|
| 697 |
|
|
BYTE *dir /* Pointer to the directory entry */
|
| 698 |
|
|
)
|
| 699 |
|
|
{
|
| 700 |
|
|
int i, s;
|
| 701 |
|
|
WCHAR wc, uc;
|
| 702 |
|
|
|
| 703 |
|
|
|
| 704 |
|
|
i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
|
| 705 |
|
|
|
| 706 |
|
|
s = 0; wc = 1;
|
| 707 |
|
|
do {
|
| 708 |
|
|
uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
|
| 709 |
|
|
if (wc) { /* Last char has not been processed */
|
| 710 |
|
|
if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
|
| 711 |
|
|
lfnbuf[i++] = wc = uc; /* Store it */
|
| 712 |
|
|
} else {
|
| 713 |
|
|
if (uc != 0xFFFF) return FALSE; /* Check filler */
|
| 714 |
|
|
}
|
| 715 |
|
|
} while (++s < 13); /* Read all character in the entry */
|
| 716 |
|
|
|
| 717 |
|
|
if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
|
| 718 |
|
|
if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
|
| 719 |
|
|
lfnbuf[i] = 0;
|
| 720 |
|
|
}
|
| 721 |
|
|
|
| 722 |
|
|
return TRUE;
|
| 723 |
|
|
}
|
| 724 |
|
|
|
| 725 |
|
|
|
| 726 |
|
|
#if !_FS_READONLY
|
| 727 |
|
|
static
|
| 728 |
|
|
void fit_lfn (
|
| 729 |
|
|
const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
|
| 730 |
|
|
BYTE *dir, /* Pointer to the directory entry */
|
| 731 |
|
|
BYTE ord, /* LFN order (1-20) */
|
| 732 |
|
|
BYTE sum /* SFN sum */
|
| 733 |
|
|
)
|
| 734 |
|
|
{
|
| 735 |
|
|
int i, s;
|
| 736 |
|
|
WCHAR wc;
|
| 737 |
|
|
|
| 738 |
|
|
|
| 739 |
|
|
dir[LDIR_Chksum] = sum; /* Set check sum */
|
| 740 |
|
|
dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
|
| 741 |
|
|
dir[LDIR_Type] = 0;
|
| 742 |
|
|
ST_WORD(dir+LDIR_FstClusLO, 0);
|
| 743 |
|
|
|
| 744 |
|
|
i = (ord - 1) * 13; /* Get offset in the LFN buffer */
|
| 745 |
|
|
s = wc = 0;
|
| 746 |
|
|
do {
|
| 747 |
|
|
if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
|
| 748 |
|
|
ST_WORD(dir+LfnOfs[s], wc); /* Put it */
|
| 749 |
|
|
if (!wc) wc = 0xFFFF; /* Padding chars following last char */
|
| 750 |
|
|
} while (++s < 13);
|
| 751 |
|
|
if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
|
| 752 |
|
|
dir[LDIR_Ord] = ord; /* Set the LFN order */
|
| 753 |
|
|
}
|
| 754 |
|
|
|
| 755 |
|
|
#endif
|
| 756 |
|
|
#endif
|
| 757 |
|
|
|
| 758 |
|
|
|
| 759 |
|
|
|
| 760 |
|
|
/*-----------------------------------------------------------------------*/
|
| 761 |
|
|
/* Create numbered name */
|
| 762 |
|
|
/*-----------------------------------------------------------------------*/
|
| 763 |
|
|
#if _USE_LFN
|
| 764 |
|
|
void gen_numname (
|
| 765 |
|
|
BYTE *dst, /* Pointer to genartated SFN */
|
| 766 |
|
|
const BYTE *src, /* Pointer to source SFN to be modified */
|
| 767 |
|
|
const WCHAR *lfn, /* Pointer to LFN */
|
| 768 |
|
|
WORD num /* Sequense number */
|
| 769 |
|
|
)
|
| 770 |
|
|
{
|
| 771 |
|
|
char ns[8];
|
| 772 |
|
|
int i, j;
|
| 773 |
|
|
|
| 774 |
|
|
|
| 775 |
|
|
mem_cpy(dst, src, 11);
|
| 776 |
|
|
|
| 777 |
|
|
if (num > 5) { /* On many collisions, generate a hash number instead of sequencial number */
|
| 778 |
|
|
do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
|
| 779 |
|
|
}
|
| 780 |
|
|
|
| 781 |
|
|
/* itoa */
|
| 782 |
|
|
i = 7;
|
| 783 |
|
|
do {
|
| 784 |
|
|
ns[i--] = (num % 10) + '0';
|
| 785 |
|
|
num /= 10;
|
| 786 |
|
|
} while (num);
|
| 787 |
|
|
ns[i] = '~';
|
| 788 |
|
|
|
| 789 |
|
|
/* Append the number */
|
| 790 |
|
|
for (j = 0; j < i && dst[j] != ' '; j++) {
|
| 791 |
|
|
if (IsDBCS1(dst[j])) {
|
| 792 |
|
|
if (j == i - 1) break;
|
| 793 |
|
|
j++;
|
| 794 |
|
|
}
|
| 795 |
|
|
}
|
| 796 |
|
|
do {
|
| 797 |
|
|
dst[j++] = (i < 8) ? ns[i++] : ' ';
|
| 798 |
|
|
} while (j < 8);
|
| 799 |
|
|
}
|
| 800 |
|
|
#endif
|
| 801 |
|
|
|
| 802 |
|
|
|
| 803 |
|
|
|
| 804 |
|
|
|
| 805 |
|
|
/*-----------------------------------------------------------------------*/
|
| 806 |
|
|
/* Calculate sum of an SFN */
|
| 807 |
|
|
/*-----------------------------------------------------------------------*/
|
| 808 |
|
|
#if _USE_LFN
|
| 809 |
|
|
static
|
| 810 |
|
|
BYTE sum_sfn (
|
| 811 |
|
|
const BYTE *dir /* Ptr to directory entry */
|
| 812 |
|
|
)
|
| 813 |
|
|
{
|
| 814 |
|
|
BYTE sum = 0;
|
| 815 |
|
|
int n = 11;
|
| 816 |
|
|
|
| 817 |
|
|
do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
|
| 818 |
|
|
return sum;
|
| 819 |
|
|
}
|
| 820 |
|
|
#endif
|
| 821 |
|
|
|
| 822 |
|
|
|
| 823 |
|
|
|
| 824 |
|
|
|
| 825 |
|
|
/*-----------------------------------------------------------------------*/
|
| 826 |
|
|
/* Directory handling - Find an object in the directory */
|
| 827 |
|
|
/*-----------------------------------------------------------------------*/
|
| 828 |
|
|
|
| 829 |
|
|
static
|
| 830 |
|
|
FRESULT dir_find (
|
| 831 |
|
|
DIR *dj /* Pointer to the directory object linked to the file name */
|
| 832 |
|
|
)
|
| 833 |
|
|
{
|
| 834 |
|
|
FRESULT res;
|
| 835 |
|
|
BYTE c, *dir;
|
| 836 |
|
|
#if _USE_LFN
|
| 837 |
|
|
BYTE a, ord, sum;
|
| 838 |
|
|
#endif
|
| 839 |
|
|
|
| 840 |
|
|
res = dir_seek(dj, 0); /* Rewind directory object */
|
| 841 |
|
|
if (res != FR_OK) return res;
|
| 842 |
|
|
|
| 843 |
|
|
#if _USE_LFN
|
| 844 |
|
|
ord = sum = 0xFF;
|
| 845 |
|
|
#endif
|
| 846 |
|
|
do {
|
| 847 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 848 |
|
|
if (res != FR_OK) break;
|
| 849 |
|
|
dir = dj->dir; /* Ptr to the directory entry of current index */
|
| 850 |
|
|
c = dir[DIR_Name];
|
| 851 |
|
|
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
| 852 |
|
|
#if _USE_LFN /* LFN configuration */
|
| 853 |
|
|
a = dir[DIR_Attr] & AM_MASK;
|
| 854 |
|
|
if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
|
| 855 |
|
|
ord = 0xFF;
|
| 856 |
|
|
} else {
|
| 857 |
|
|
if (a == AM_LFN) { /* An LFN entry is found */
|
| 858 |
|
|
if (dj->lfn) {
|
| 859 |
|
|
if (c & 0x40) { /* Is it start of LFN sequence? */
|
| 860 |
|
|
sum = dir[LDIR_Chksum];
|
| 861 |
|
|
c &= 0xBF; ord = c; /* LFN start order */
|
| 862 |
|
|
dj->lfn_idx = dj->index;
|
| 863 |
|
|
}
|
| 864 |
|
|
/* Check validity of the LFN entry and compare it with given name */
|
| 865 |
|
|
ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
|
| 866 |
|
|
}
|
| 867 |
|
|
} else { /* An SFN entry is found */
|
| 868 |
|
|
if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
|
| 869 |
|
|
ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
|
| 870 |
|
|
if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
|
| 871 |
|
|
}
|
| 872 |
|
|
}
|
| 873 |
|
|
#else /* Non LFN configuration */
|
| 874 |
|
|
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
|
| 875 |
|
|
break;
|
| 876 |
|
|
#endif
|
| 877 |
|
|
res = dir_next(dj, FALSE); /* Next entry */
|
| 878 |
|
|
} while (res == FR_OK);
|
| 879 |
|
|
|
| 880 |
|
|
return res;
|
| 881 |
|
|
}
|
| 882 |
|
|
|
| 883 |
|
|
|
| 884 |
|
|
|
| 885 |
|
|
|
| 886 |
|
|
/*-----------------------------------------------------------------------*/
|
| 887 |
|
|
/* Read an object from the directory */
|
| 888 |
|
|
/*-----------------------------------------------------------------------*/
|
| 889 |
|
|
#if _FS_MINIMIZE <= 1
|
| 890 |
|
|
static
|
| 891 |
|
|
FRESULT dir_read (
|
| 892 |
|
|
DIR *dj /* Pointer to the directory object that pointing the entry to be read */
|
| 893 |
|
|
)
|
| 894 |
|
|
{
|
| 895 |
|
|
FRESULT res;
|
| 896 |
|
|
BYTE c, *dir;
|
| 897 |
|
|
#if _USE_LFN
|
| 898 |
|
|
BYTE a, ord = 0xFF, sum = 0xFF;
|
| 899 |
|
|
#endif
|
| 900 |
|
|
|
| 901 |
|
|
res = FR_NO_FILE;
|
| 902 |
|
|
while (dj->sect) {
|
| 903 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 904 |
|
|
if (res != FR_OK) break;
|
| 905 |
|
|
dir = dj->dir; /* Ptr to the directory entry of current index */
|
| 906 |
|
|
c = dir[DIR_Name];
|
| 907 |
|
|
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
| 908 |
|
|
#if _USE_LFN /* LFN configuration */
|
| 909 |
|
|
a = dir[DIR_Attr] & AM_MASK;
|
| 910 |
|
|
if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
|
| 911 |
|
|
ord = 0xFF;
|
| 912 |
|
|
} else {
|
| 913 |
|
|
if (a == AM_LFN) { /* An LFN entry is found */
|
| 914 |
|
|
if (c & 0x40) { /* Is it start of LFN sequence? */
|
| 915 |
|
|
sum = dir[LDIR_Chksum];
|
| 916 |
|
|
c &= 0xBF; ord = c;
|
| 917 |
|
|
dj->lfn_idx = dj->index;
|
| 918 |
|
|
}
|
| 919 |
|
|
/* Check LFN validity and capture it */
|
| 920 |
|
|
ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
|
| 921 |
|
|
} else { /* An SFN entry is found */
|
| 922 |
|
|
if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
|
| 923 |
|
|
dj->lfn_idx = 0xFFFF; /* It has no LFN. */
|
| 924 |
|
|
break;
|
| 925 |
|
|
}
|
| 926 |
|
|
}
|
| 927 |
|
|
#else /* Non LFN configuration */
|
| 928 |
|
|
if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
|
| 929 |
|
|
break;
|
| 930 |
|
|
#endif
|
| 931 |
|
|
res = dir_next(dj, FALSE); /* Next entry */
|
| 932 |
|
|
if (res != FR_OK) break;
|
| 933 |
|
|
}
|
| 934 |
|
|
|
| 935 |
|
|
if (res != FR_OK) dj->sect = 0;
|
| 936 |
|
|
|
| 937 |
|
|
return res;
|
| 938 |
|
|
}
|
| 939 |
|
|
#endif
|
| 940 |
|
|
|
| 941 |
|
|
|
| 942 |
|
|
|
| 943 |
|
|
/*-----------------------------------------------------------------------*/
|
| 944 |
|
|
/* Register an object to the directory */
|
| 945 |
|
|
/*-----------------------------------------------------------------------*/
|
| 946 |
|
|
#if !_FS_READONLY
|
| 947 |
|
|
static
|
| 948 |
|
|
FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
|
| 949 |
|
|
DIR *dj /* Target directory with object name to be created */
|
| 950 |
|
|
)
|
| 951 |
|
|
{
|
| 952 |
|
|
FRESULT res;
|
| 953 |
|
|
BYTE c, *dir;
|
| 954 |
|
|
#if _USE_LFN /* LFN configuration */
|
| 955 |
|
|
WORD n, ne, is;
|
| 956 |
|
|
BYTE sn[12], *fn, sum;
|
| 957 |
|
|
WCHAR *lfn;
|
| 958 |
|
|
|
| 959 |
|
|
|
| 960 |
|
|
fn = dj->fn; lfn = dj->lfn;
|
| 961 |
|
|
mem_cpy(sn, fn, 12);
|
| 962 |
|
|
|
| 963 |
|
|
if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
|
| 964 |
|
|
|
| 965 |
|
|
if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
|
| 966 |
|
|
fn[NS] = 0; dj->lfn = NULL; /* Find only SFN */
|
| 967 |
|
|
for (n = 1; n < 100; n++) {
|
| 968 |
|
|
gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
|
| 969 |
|
|
res = dir_find(dj); /* Check if the name collides with existing SFN */
|
| 970 |
|
|
if (res != FR_OK) break;
|
| 971 |
|
|
}
|
| 972 |
|
|
if (n == 100) return FR_DENIED; /* Abort if too many collisions */
|
| 973 |
|
|
if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
|
| 974 |
|
|
fn[NS] = sn[NS]; dj->lfn = lfn;
|
| 975 |
|
|
}
|
| 976 |
|
|
|
| 977 |
|
|
if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve reserve an SFN + LFN entries. */
|
| 978 |
|
|
for (ne = 0; lfn[ne]; ne++) ;
|
| 979 |
|
|
ne = (ne + 25) / 13;
|
| 980 |
|
|
} else { /* Otherwise reserve only an SFN entry. */
|
| 981 |
|
|
ne = 1;
|
| 982 |
|
|
}
|
| 983 |
|
|
|
| 984 |
|
|
/* Reserve contiguous entries */
|
| 985 |
|
|
res = dir_seek(dj, 0);
|
| 986 |
|
|
if (res != FR_OK) return res;
|
| 987 |
|
|
n = is = 0;
|
| 988 |
|
|
do {
|
| 989 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 990 |
|
|
if (res != FR_OK) break;
|
| 991 |
|
|
c = *dj->dir; /* Check the entry status */
|
| 992 |
|
|
if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
|
| 993 |
|
|
if (n == 0) is = dj->index; /* First index of the contigulus entry */
|
| 994 |
|
|
if (++n == ne) break; /* A contiguous entry that requiered count is found */
|
| 995 |
|
|
} else {
|
| 996 |
|
|
n = 0; /* Not a blank entry. Restart to search */
|
| 997 |
|
|
}
|
| 998 |
|
|
res = dir_next(dj, TRUE); /* Next entry with table streach */
|
| 999 |
|
|
} while (res == FR_OK);
|
| 1000 |
|
|
|
| 1001 |
|
|
if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
|
| 1002 |
|
|
res = dir_seek(dj, is);
|
| 1003 |
|
|
if (res == FR_OK) {
|
| 1004 |
|
|
sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
|
| 1005 |
|
|
ne--;
|
| 1006 |
|
|
do { /* Store LFN entries in bottom first */
|
| 1007 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 1008 |
|
|
if (res != FR_OK) break;
|
| 1009 |
|
|
fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
|
| 1010 |
|
|
dj->fs->wflag = 1;
|
| 1011 |
|
|
res = dir_next(dj, FALSE); /* Next entry */
|
| 1012 |
|
|
} while (res == FR_OK && --ne);
|
| 1013 |
|
|
}
|
| 1014 |
|
|
}
|
| 1015 |
|
|
|
| 1016 |
|
|
#else /* Non LFN configuration */
|
| 1017 |
|
|
res = dir_seek(dj, 0);
|
| 1018 |
|
|
if (res == FR_OK) {
|
| 1019 |
|
|
do { /* Find a blank entry for the SFN */
|
| 1020 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 1021 |
|
|
if (res != FR_OK) break;
|
| 1022 |
|
|
c = *dj->dir;
|
| 1023 |
|
|
if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
|
| 1024 |
|
|
res = dir_next(dj, TRUE); /* Next entry with table streach */
|
| 1025 |
|
|
} while (res == FR_OK);
|
| 1026 |
|
|
}
|
| 1027 |
|
|
#endif
|
| 1028 |
|
|
|
| 1029 |
|
|
if (res == FR_OK) { /* Initialize the SFN entry */
|
| 1030 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 1031 |
|
|
if (res == FR_OK) {
|
| 1032 |
|
|
dir = dj->dir;
|
| 1033 |
|
|
mem_set(dir, 0, 32); /* Clean the entry */
|
| 1034 |
|
|
mem_cpy(dir, dj->fn, 11); /* Put SFN */
|
| 1035 |
|
|
dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
|
| 1036 |
|
|
dj->fs->wflag = 1;
|
| 1037 |
|
|
}
|
| 1038 |
|
|
}
|
| 1039 |
|
|
|
| 1040 |
|
|
return res;
|
| 1041 |
|
|
}
|
| 1042 |
|
|
#endif /* !_FS_READONLY */
|
| 1043 |
|
|
|
| 1044 |
|
|
|
| 1045 |
|
|
|
| 1046 |
|
|
|
| 1047 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1048 |
|
|
/* Remove an object from the directory */
|
| 1049 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1050 |
|
|
#if !_FS_READONLY && !_FS_MINIMIZE
|
| 1051 |
|
|
static
|
| 1052 |
|
|
FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
|
| 1053 |
|
|
DIR *dj /* Directory object pointing the entry to be removed */
|
| 1054 |
|
|
)
|
| 1055 |
|
|
{
|
| 1056 |
|
|
FRESULT res;
|
| 1057 |
|
|
#if _USE_LFN /* LFN configuration */
|
| 1058 |
|
|
WORD i;
|
| 1059 |
|
|
|
| 1060 |
|
|
i = dj->index; /* SFN index */
|
| 1061 |
|
|
res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
|
| 1062 |
|
|
if (res == FR_OK) {
|
| 1063 |
|
|
do {
|
| 1064 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 1065 |
|
|
if (res != FR_OK) break;
|
| 1066 |
|
|
*dj->dir = 0xE5; /* Mark the entry "deleted" */
|
| 1067 |
|
|
dj->fs->wflag = 1;
|
| 1068 |
|
|
if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
|
| 1069 |
|
|
res = dir_next(dj, FALSE); /* Next entry */
|
| 1070 |
|
|
} while (res == FR_OK);
|
| 1071 |
|
|
if (res == FR_NO_FILE) res = FR_INT_ERR;
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
#else /* Non LFN configuration */
|
| 1075 |
|
|
res = dir_seek(dj, dj->index);
|
| 1076 |
|
|
if (res == FR_OK) {
|
| 1077 |
|
|
res = move_window(dj->fs, dj->sect);
|
| 1078 |
|
|
if (res == FR_OK) {
|
| 1079 |
|
|
*dj->dir = 0xE5; /* Mark the entry "deleted" */
|
| 1080 |
|
|
dj->fs->wflag = 1;
|
| 1081 |
|
|
}
|
| 1082 |
|
|
}
|
| 1083 |
|
|
#endif
|
| 1084 |
|
|
|
| 1085 |
|
|
return res;
|
| 1086 |
|
|
}
|
| 1087 |
|
|
#endif /* !_FS_READONLY */
|
| 1088 |
|
|
|
| 1089 |
|
|
|
| 1090 |
|
|
|
| 1091 |
|
|
|
| 1092 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1093 |
|
|
/* Pick a segment and create the object name in directory form */
|
| 1094 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1095 |
|
|
|
| 1096 |
|
|
static
|
| 1097 |
|
|
FRESULT create_name (
|
| 1098 |
|
|
DIR *dj, /* Pointer to the directory object */
|
| 1099 |
|
|
const XCHAR **path /* Pointer to pointer to the segment in the path string */
|
| 1100 |
|
|
)
|
| 1101 |
|
|
{
|
| 1102 |
|
|
#ifdef _EXCVT
|
| 1103 |
|
|
static const BYTE cvt[] = _EXCVT;
|
| 1104 |
|
|
#endif
|
| 1105 |
|
|
|
| 1106 |
|
|
#if _USE_LFN /* LFN configuration */
|
| 1107 |
|
|
BYTE b, cf;
|
| 1108 |
|
|
WCHAR w, *lfn;
|
| 1109 |
|
|
int i, ni, si, di;
|
| 1110 |
|
|
const XCHAR *p;
|
| 1111 |
|
|
|
| 1112 |
|
|
/* Create LFN in Unicode */
|
| 1113 |
|
|
si = di = 0;
|
| 1114 |
|
|
p = *path;
|
| 1115 |
|
|
lfn = dj->lfn;
|
| 1116 |
|
|
for (;;) {
|
| 1117 |
|
|
w = p[si++]; /* Get a character */
|
| 1118 |
|
|
if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
|
| 1119 |
|
|
if (di >= _MAX_LFN) /* Reject too long name */
|
| 1120 |
|
|
return FR_INVALID_NAME;
|
| 1121 |
|
|
#if !_LFN_UNICODE
|
| 1122 |
|
|
w &= 0xFF;
|
| 1123 |
|
|
if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
|
| 1124 |
|
|
b = p[si++]; /* Get 2nd byte */
|
| 1125 |
|
|
if (!IsDBCS2(b)) /* Reject invalid code for DBC */
|
| 1126 |
|
|
return FR_INVALID_NAME;
|
| 1127 |
|
|
w = (w << 8) + b;
|
| 1128 |
|
|
}
|
| 1129 |
|
|
w = ff_convert(w, 1); /* Convert OEM to Unicode */
|
| 1130 |
|
|
if (!w) return FR_INVALID_NAME; /* Reject invalid code */
|
| 1131 |
|
|
#endif
|
| 1132 |
|
|
if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
|
| 1133 |
|
|
return FR_INVALID_NAME;
|
| 1134 |
|
|
lfn[di++] = w; /* Store the Unicode char */
|
| 1135 |
|
|
}
|
| 1136 |
|
|
*path = &p[si]; /* Rerurn pointer to the next segment */
|
| 1137 |
|
|
cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
|
| 1138 |
|
|
#if _FS_RPATH
|
| 1139 |
|
|
if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
|
| 1140 |
|
|
(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
|
| 1141 |
|
|
lfn[di] = 0;
|
| 1142 |
|
|
for (i = 0; i < 11; i++)
|
| 1143 |
|
|
dj->fn[i] = (i < di) ? '.' : ' ';
|
| 1144 |
|
|
dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
|
| 1145 |
|
|
return FR_OK;
|
| 1146 |
|
|
}
|
| 1147 |
|
|
#endif
|
| 1148 |
|
|
while (di) { /* Strip trailing spaces and dots */
|
| 1149 |
|
|
w = lfn[di - 1];
|
| 1150 |
|
|
if (w != ' ' && w != '.') break;
|
| 1151 |
|
|
di--;
|
| 1152 |
|
|
}
|
| 1153 |
|
|
if (!di) return FR_INVALID_NAME; /* Reject null string */
|
| 1154 |
|
|
|
| 1155 |
|
|
lfn[di] = 0; /* LFN is created */
|
| 1156 |
|
|
|
| 1157 |
|
|
/* Create SFN in directory form */
|
| 1158 |
|
|
mem_set(dj->fn, ' ', 11);
|
| 1159 |
|
|
for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
|
| 1160 |
|
|
if (si) cf |= NS_LOSS | NS_LFN;
|
| 1161 |
|
|
while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
|
| 1162 |
|
|
|
| 1163 |
|
|
b = i = 0; ni = 8;
|
| 1164 |
|
|
for (;;) {
|
| 1165 |
|
|
w = lfn[si++]; /* Get an LFN char */
|
| 1166 |
|
|
if (!w) break; /* Break on enf of the LFN */
|
| 1167 |
|
|
if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
|
| 1168 |
|
|
cf |= NS_LOSS | NS_LFN; continue;
|
| 1169 |
|
|
}
|
| 1170 |
|
|
|
| 1171 |
|
|
if (i >= ni || si == di) { /* Extension or end of SFN */
|
| 1172 |
|
|
if (ni == 11) { /* Long extension */
|
| 1173 |
|
|
cf |= NS_LOSS | NS_LFN; break;
|
| 1174 |
|
|
}
|
| 1175 |
|
|
if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
|
| 1176 |
|
|
if (si > di) break; /* No extension */
|
| 1177 |
|
|
si = di; i = 8; ni = 11; /* Enter extension section */
|
| 1178 |
|
|
b <<= 2; continue;
|
| 1179 |
|
|
}
|
| 1180 |
|
|
|
| 1181 |
|
|
if (w >= 0x80) { /* Non ASCII char */
|
| 1182 |
|
|
#ifdef _EXCVT
|
| 1183 |
|
|
w = ff_convert(w, 0); /* Unicode -> OEM code */
|
| 1184 |
|
|
if (w) w = cvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
|
| 1185 |
|
|
#else
|
| 1186 |
|
|
w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
|
| 1187 |
|
|
#endif
|
| 1188 |
|
|
cf |= NS_LFN; /* Force create LFN entry */
|
| 1189 |
|
|
}
|
| 1190 |
|
|
|
| 1191 |
|
|
if (_DF1S && w >= 0x100) { /* Double byte char */
|
| 1192 |
|
|
if (i >= ni - 1) {
|
| 1193 |
|
|
cf |= NS_LOSS | NS_LFN; i = ni; continue;
|
| 1194 |
|
|
}
|
| 1195 |
|
|
dj->fn[i++] = (BYTE)(w >> 8);
|
| 1196 |
|
|
} else { /* Single byte char */
|
| 1197 |
|
|
if (!w || chk_chr("+,;[=]", w)) { /* Replace illegal chars for SFN */
|
| 1198 |
|
|
w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
|
| 1199 |
|
|
} else {
|
| 1200 |
|
|
if (IsUpper(w)) { /* ASCII large capital */
|
| 1201 |
|
|
b |= 2;
|
| 1202 |
|
|
} else {
|
| 1203 |
|
|
if (IsLower(w)) { /* ASCII small capital */
|
| 1204 |
|
|
b |= 1; w -= 0x20;
|
| 1205 |
|
|
}
|
| 1206 |
|
|
}
|
| 1207 |
|
|
}
|
| 1208 |
|
|
}
|
| 1209 |
|
|
dj->fn[i++] = (BYTE)w;
|
| 1210 |
|
|
}
|
| 1211 |
|
|
|
| 1212 |
|
|
if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
|
| 1213 |
|
|
|
| 1214 |
|
|
if (ni == 8) b <<= 2;
|
| 1215 |
|
|
if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
|
| 1216 |
|
|
cf |= NS_LFN;
|
| 1217 |
|
|
if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
|
| 1218 |
|
|
if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
|
| 1219 |
|
|
if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
|
| 1220 |
|
|
}
|
| 1221 |
|
|
|
| 1222 |
|
|
dj->fn[NS] = cf; /* SFN is created */
|
| 1223 |
|
|
|
| 1224 |
|
|
return FR_OK;
|
| 1225 |
|
|
|
| 1226 |
|
|
|
| 1227 |
|
|
#else /* Non-LFN configuration */
|
| 1228 |
|
|
BYTE b, c, d, *sfn;
|
| 1229 |
|
|
int ni, si, i;
|
| 1230 |
|
|
const char *p;
|
| 1231 |
|
|
|
| 1232 |
|
|
/* Create file name in directory form */
|
| 1233 |
|
|
sfn = dj->fn;
|
| 1234 |
|
|
mem_set(sfn, ' ', 11);
|
| 1235 |
|
|
si = i = b = 0; ni = 8;
|
| 1236 |
|
|
p = *path;
|
| 1237 |
|
|
#if _FS_RPATH
|
| 1238 |
|
|
if (p[si] == '.') { /* Is this a dot entry? */
|
| 1239 |
|
|
for (;;) {
|
| 1240 |
|
|
c = p[si++];
|
| 1241 |
|
|
if (c != '.' || si >= 3) break;
|
| 1242 |
|
|
sfn[i++] = c;
|
| 1243 |
|
|
}
|
| 1244 |
|
|
if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
|
| 1245 |
|
|
*path = &p[si]; /* Rerurn pointer to the next segment */
|
| 1246 |
|
|
sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
|
| 1247 |
|
|
return FR_OK;
|
| 1248 |
|
|
}
|
| 1249 |
|
|
#endif
|
| 1250 |
|
|
for (;;) {
|
| 1251 |
|
|
c = p[si++];
|
| 1252 |
|
|
if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
|
| 1253 |
|
|
if (c == '.' || i >= ni) {
|
| 1254 |
|
|
if (ni != 8 || c != '.') return FR_INVALID_NAME;
|
| 1255 |
|
|
i = 8; ni = 11;
|
| 1256 |
|
|
b <<= 2; continue;
|
| 1257 |
|
|
}
|
| 1258 |
|
|
if (c >= 0x80) { /* Extended char */
|
| 1259 |
|
|
#ifdef _EXCVT
|
| 1260 |
|
|
c = cvt[c - 0x80]; /* Convert extend char (SBCS) */
|
| 1261 |
|
|
#else
|
| 1262 |
|
|
b |= 3; /* Eliminate NT flag if ext char is exist */
|
| 1263 |
|
|
#if !_DF1S /* ASCII only cfg */
|
| 1264 |
|
|
return FR_INVALID_NAME;
|
| 1265 |
|
|
#endif
|
| 1266 |
|
|
#endif
|
| 1267 |
|
|
}
|
| 1268 |
|
|
if (IsDBCS1(c)) { /* DBC 1st byte? */
|
| 1269 |
|
|
d = p[si++]; /* Get 2nd byte */
|
| 1270 |
|
|
if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
|
| 1271 |
|
|
return FR_INVALID_NAME;
|
| 1272 |
|
|
sfn[i++] = c;
|
| 1273 |
|
|
sfn[i++] = d;
|
| 1274 |
|
|
} else { /* Single byte code */
|
| 1275 |
|
|
if (chk_chr(" \"*+,[=]|\x7F", c)) /* Reject illegal chrs for SFN */
|
| 1276 |
|
|
return FR_INVALID_NAME;
|
| 1277 |
|
|
if (IsUpper(c)) { /* ASCII large capital? */
|
| 1278 |
|
|
b |= 2;
|
| 1279 |
|
|
} else {
|
| 1280 |
|
|
if (IsLower(c)) { /* ASCII small capital? */
|
| 1281 |
|
|
b |= 1; c -= 0x20;
|
| 1282 |
|
|
}
|
| 1283 |
|
|
}
|
| 1284 |
|
|
sfn[i++] = c;
|
| 1285 |
|
|
}
|
| 1286 |
|
|
}
|
| 1287 |
|
|
*path = &p[si]; /* Rerurn pointer to the next segment */
|
| 1288 |
|
|
c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
|
| 1289 |
|
|
|
| 1290 |
|
|
if (!i) return FR_INVALID_NAME; /* Reject null string */
|
| 1291 |
|
|
if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
|
| 1292 |
|
|
|
| 1293 |
|
|
if (ni == 8) b <<= 2;
|
| 1294 |
|
|
if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Extension has only small capital) */
|
| 1295 |
|
|
if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Filename has only small capital) */
|
| 1296 |
|
|
|
| 1297 |
|
|
sfn[NS] = c; /* Store NT flag, File name is created */
|
| 1298 |
|
|
|
| 1299 |
|
|
return FR_OK;
|
| 1300 |
|
|
#endif
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
|
| 1304 |
|
|
|
| 1305 |
|
|
|
| 1306 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1307 |
|
|
/* Get file information from directory entry */
|
| 1308 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1309 |
|
|
#if _FS_MINIMIZE <= 1
|
| 1310 |
|
|
static
|
| 1311 |
|
|
void get_fileinfo ( /* No return code */
|
| 1312 |
|
|
DIR *dj, /* Pointer to the directory object */
|
| 1313 |
|
|
FILINFO *fno /* Pointer to the file information to be filled */
|
| 1314 |
|
|
)
|
| 1315 |
|
|
{
|
| 1316 |
|
|
int i;
|
| 1317 |
|
|
BYTE c, nt, *dir;
|
| 1318 |
|
|
char *p;
|
| 1319 |
|
|
|
| 1320 |
|
|
|
| 1321 |
|
|
p = fno->fname;
|
| 1322 |
|
|
if (dj->sect) {
|
| 1323 |
|
|
dir = dj->dir;
|
| 1324 |
|
|
nt = dir[DIR_NTres]; /* NT flag */
|
| 1325 |
|
|
for (i = 0; i < 8; i++) { /* Copy name body */
|
| 1326 |
|
|
c = dir[i];
|
| 1327 |
|
|
if (c == ' ') break;
|
| 1328 |
|
|
if (c == 0x05) c = 0xE5;
|
| 1329 |
|
|
if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
|
| 1330 |
|
|
*p++ = c;
|
| 1331 |
|
|
}
|
| 1332 |
|
|
if (dir[8] != ' ') { /* Copy name extension */
|
| 1333 |
|
|
*p++ = '.';
|
| 1334 |
|
|
for (i = 8; i < 11; i++) {
|
| 1335 |
|
|
c = dir[i];
|
| 1336 |
|
|
if (c == ' ') break;
|
| 1337 |
|
|
if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
|
| 1338 |
|
|
*p++ = c;
|
| 1339 |
|
|
}
|
| 1340 |
|
|
}
|
| 1341 |
|
|
fno->fattrib = dir[DIR_Attr]; /* Attribute */
|
| 1342 |
|
|
fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
|
| 1343 |
|
|
fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
|
| 1344 |
|
|
fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
|
| 1345 |
|
|
}
|
| 1346 |
|
|
*p = 0;
|
| 1347 |
|
|
|
| 1348 |
|
|
#if _USE_LFN
|
| 1349 |
|
|
if (fno->lfname) {
|
| 1350 |
|
|
XCHAR *tp = fno->lfname;
|
| 1351 |
|
|
WCHAR w, *lfn;
|
| 1352 |
|
|
|
| 1353 |
|
|
i = 0;
|
| 1354 |
|
|
if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
|
| 1355 |
|
|
lfn = dj->lfn;
|
| 1356 |
|
|
while ((w = *lfn++) != 0) { /* Get an LFN char */
|
| 1357 |
|
|
#if !_LFN_UNICODE
|
| 1358 |
|
|
w = ff_convert(w, 0); /* Unicode -> OEM conversion */
|
| 1359 |
|
|
if (!w) { i = 0; break; } /* Could not convert, no LFN */
|
| 1360 |
|
|
if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
|
| 1361 |
|
|
tp[i++] = (XCHAR)(w >> 8);
|
| 1362 |
|
|
#endif
|
| 1363 |
|
|
if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
|
| 1364 |
|
|
tp[i++] = (XCHAR)w;
|
| 1365 |
|
|
}
|
| 1366 |
|
|
}
|
| 1367 |
|
|
tp[i] = 0; /* Terminator */
|
| 1368 |
|
|
}
|
| 1369 |
|
|
#endif
|
| 1370 |
|
|
}
|
| 1371 |
|
|
#endif /* _FS_MINIMIZE <= 1 */
|
| 1372 |
|
|
|
| 1373 |
|
|
|
| 1374 |
|
|
|
| 1375 |
|
|
|
| 1376 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1377 |
|
|
/* Follow a file path */
|
| 1378 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1379 |
|
|
|
| 1380 |
|
|
static
|
| 1381 |
|
|
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
|
| 1382 |
|
|
DIR *dj, /* Directory object to return last directory and found object */
|
| 1383 |
|
|
const XCHAR *path /* Full-path string to find a file or directory */
|
| 1384 |
|
|
)
|
| 1385 |
|
|
{
|
| 1386 |
|
|
FRESULT res;
|
| 1387 |
|
|
BYTE *dir, last;
|
| 1388 |
|
|
|
| 1389 |
|
|
|
| 1390 |
|
|
while (!_USE_LFN && *path == ' ') path++; /* Skip leading spaces */
|
| 1391 |
|
|
#if _FS_RPATH
|
| 1392 |
|
|
if (*path == '/' || *path == '\\') { /* There is a heading separator */
|
| 1393 |
|
|
path++; dj->sclust = 0; /* Strip it and start from the root dir */
|
| 1394 |
|
|
} else { /* No heading saparator */
|
| 1395 |
|
|
dj->sclust = dj->fs->cdir; /* Start from the current dir */
|
| 1396 |
|
|
}
|
| 1397 |
|
|
#else
|
| 1398 |
|
|
if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
|
| 1399 |
|
|
path++;
|
| 1400 |
|
|
dj->sclust = 0; /* Start from the root dir */
|
| 1401 |
|
|
#endif
|
| 1402 |
|
|
|
| 1403 |
|
|
if ((UINT)*path < ' ') { /* Null path means the start directory itself */
|
| 1404 |
|
|
res = dir_seek(dj, 0);
|
| 1405 |
|
|
dj->dir = NULL;
|
| 1406 |
|
|
|
| 1407 |
|
|
} else { /* Follow path */
|
| 1408 |
|
|
for (;;) {
|
| 1409 |
|
|
res = create_name(dj, &path); /* Get a segment */
|
| 1410 |
|
|
if (res != FR_OK) break;
|
| 1411 |
|
|
res = dir_find(dj); /* Find it */
|
| 1412 |
|
|
last = *(dj->fn+NS) & NS_LAST;
|
| 1413 |
|
|
if (res != FR_OK) { /* Could not find the object */
|
| 1414 |
|
|
if (res == FR_NO_FILE && !last)
|
| 1415 |
|
|
res = FR_NO_PATH;
|
| 1416 |
|
|
break;
|
| 1417 |
|
|
}
|
| 1418 |
|
|
if (last) break; /* Last segment match. Function completed. */
|
| 1419 |
|
|
dir = dj->dir; /* There is next segment. Follow the sub directory */
|
| 1420 |
|
|
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
|
| 1421 |
|
|
res = FR_NO_PATH; break;
|
| 1422 |
|
|
}
|
| 1423 |
|
|
dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
|
| 1424 |
|
|
}
|
| 1425 |
|
|
}
|
| 1426 |
|
|
|
| 1427 |
|
|
return res;
|
| 1428 |
|
|
}
|
| 1429 |
|
|
|
| 1430 |
|
|
|
| 1431 |
|
|
|
| 1432 |
|
|
|
| 1433 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1434 |
|
|
/* Load boot record and check if it is an FAT boot record */
|
| 1435 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1436 |
|
|
|
| 1437 |
|
|
static
|
| 1438 |
|
|
BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
|
| 1439 |
|
|
FATFS *fs, /* File system object */
|
| 1440 |
|
|
DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
|
| 1441 |
|
|
)
|
| 1442 |
|
|
{
|
| 1443 |
|
|
if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */
|
| 1444 |
|
|
return 3;
|
| 1445 |
|
|
if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
|
| 1446 |
|
|
return 2;
|
| 1447 |
|
|
|
| 1448 |
|
|
if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
|
| 1449 |
|
|
return 0;
|
| 1450 |
|
|
if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
|
| 1451 |
|
|
return 0;
|
| 1452 |
|
|
|
| 1453 |
|
|
return 1;
|
| 1454 |
|
|
}
|
| 1455 |
|
|
|
| 1456 |
|
|
|
| 1457 |
|
|
|
| 1458 |
|
|
|
| 1459 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1460 |
|
|
/* Make sure that the file system is valid */
|
| 1461 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1462 |
|
|
|
| 1463 |
|
|
|
| 1464 |
|
|
FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occured */
|
| 1465 |
|
|
const XCHAR **path, /* Pointer to pointer to the path name (drive number) */
|
| 1466 |
|
|
FATFS **rfs, /* Pointer to pointer to the found file system object */
|
| 1467 |
|
|
BYTE chk_wp /* !=0: Check media write protection for write access */
|
| 1468 |
|
|
)
|
| 1469 |
|
|
{
|
| 1470 |
|
|
BYTE fmt, *tbl;
|
| 1471 |
|
|
UINT vol;
|
| 1472 |
|
|
DSTATUS stat;
|
| 1473 |
|
|
DWORD bsect, fsize, tsect, mclst;
|
| 1474 |
|
|
const XCHAR *p = *path;
|
| 1475 |
|
|
FATFS *fs;
|
| 1476 |
|
|
|
| 1477 |
|
|
/* Get logical drive number from the path name */
|
| 1478 |
|
|
vol = p[0] - '0'; /* Is there a drive number? */
|
| 1479 |
|
|
if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
|
| 1480 |
|
|
p += 2; *path = p; /* Return pointer to the path name */
|
| 1481 |
|
|
} else { /* No drive number is given */
|
| 1482 |
|
|
#if _FS_RPATH
|
| 1483 |
|
|
vol = Drive; /* Use current drive */
|
| 1484 |
|
|
#else
|
| 1485 |
|
|
vol = 0; /* Use drive 0 */
|
| 1486 |
|
|
#endif
|
| 1487 |
|
|
}
|
| 1488 |
|
|
|
| 1489 |
|
|
/* Check if the logical drive is valid or not */
|
| 1490 |
|
|
if (vol >= _DRIVES) /* Is the drive number valid? */
|
| 1491 |
|
|
return FR_INVALID_DRIVE;
|
| 1492 |
|
|
*rfs = fs = FatFs[vol]; /* Returen pointer to the corresponding file system object */
|
| 1493 |
|
|
if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
|
| 1494 |
|
|
|
| 1495 |
|
|
ENTER_FF(fs); /* Lock file system */
|
| 1496 |
|
|
|
| 1497 |
|
|
if (fs->fs_type) { /* If the logical drive has been mounted */
|
| 1498 |
|
|
stat = disk_status(fs->drive);
|
| 1499 |
|
|
if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
|
| 1500 |
|
|
#if !_FS_READONLY
|
| 1501 |
|
|
if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
|
| 1502 |
|
|
return FR_WRITE_PROTECTED;
|
| 1503 |
|
|
#endif
|
| 1504 |
|
|
return FR_OK; /* The file system object is valid */
|
| 1505 |
|
|
}
|
| 1506 |
|
|
}
|
| 1507 |
|
|
|
| 1508 |
|
|
/* The logical drive must be mounted. Following code attempts to mount the volume */
|
| 1509 |
|
|
|
| 1510 |
|
|
fs->fs_type = 0; /* Clear the file system object */
|
| 1511 |
|
|
fs->drive = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
|
| 1512 |
|
|
stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */
|
| 1513 |
|
|
if (stat & STA_NOINIT) /* Check if the drive is ready */
|
| 1514 |
|
|
return FR_NOT_READY;
|
| 1515 |
|
|
#if _MAX_SS != 512 /* Get disk sector size if needed */
|
| 1516 |
|
|
if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
|
| 1517 |
|
|
return FR_NO_FILESYSTEM;
|
| 1518 |
|
|
#endif
|
| 1519 |
|
|
#if !_FS_READONLY
|
| 1520 |
|
|
if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
|
| 1521 |
|
|
return FR_WRITE_PROTECTED;
|
| 1522 |
|
|
#endif
|
| 1523 |
|
|
/* Search FAT partition on the drive */
|
| 1524 |
|
|
fmt = check_fs(fs, bsect = 0); /* Check sector 0 as an SFD format */
|
| 1525 |
|
|
if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */
|
| 1526 |
|
|
/* Check a partition listed in top of the partition table */
|
| 1527 |
|
|
tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
|
| 1528 |
|
|
if (tbl[4]) { /* Is the partition existing? */
|
| 1529 |
|
|
bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
|
| 1530 |
|
|
fmt = check_fs(fs, bsect); /* Check the partition */
|
| 1531 |
|
|
}
|
| 1532 |
|
|
}
|
| 1533 |
|
|
if (fmt == 3) return FR_DISK_ERR;
|
| 1534 |
|
|
if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* No valid FAT patition is found */
|
| 1535 |
|
|
return FR_NO_FILESYSTEM;
|
| 1536 |
|
|
|
| 1537 |
|
|
/* Initialize the file system object */
|
| 1538 |
|
|
fsize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
|
| 1539 |
|
|
if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
|
| 1540 |
|
|
fs->sects_fat = fsize;
|
| 1541 |
|
|
fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
|
| 1542 |
|
|
fsize *= fs->n_fats; /* (Number of sectors in FAT area) */
|
| 1543 |
|
|
fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
|
| 1544 |
|
|
fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
|
| 1545 |
|
|
fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Nmuber of root directory entries */
|
| 1546 |
|
|
tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
|
| 1547 |
|
|
if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
|
| 1548 |
|
|
fs->max_clust = mclst = (tsect /* Last cluster# + 1 (Number of clusters + 2) */
|
| 1549 |
|
|
- LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
|
| 1550 |
|
|
) / fs->csize + 2;
|
| 1551 |
|
|
|
| 1552 |
|
|
fmt = FS_FAT12; /* Determine the FAT sub type */
|
| 1553 |
|
|
if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */
|
| 1554 |
|
|
if (mclst >= 0xFFF7) fmt = FS_FAT32; /* Number of clusters >= 0xFFF5 */
|
| 1555 |
|
|
|
| 1556 |
|
|
if (fmt == FS_FAT32)
|
| 1557 |
|
|
fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
|
| 1558 |
|
|
else
|
| 1559 |
|
|
fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
|
| 1560 |
|
|
fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */
|
| 1561 |
|
|
|
| 1562 |
|
|
#if !_FS_READONLY
|
| 1563 |
|
|
/* Initialize allocation information */
|
| 1564 |
|
|
fs->free_clust = 0xFFFFFFFF;
|
| 1565 |
|
|
fs->wflag = 0;
|
| 1566 |
|
|
/* Get fsinfo if needed */
|
| 1567 |
|
|
if (fmt == FS_FAT32) {
|
| 1568 |
|
|
fs->fsi_flag = 0;
|
| 1569 |
|
|
fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
|
| 1570 |
|
|
if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
|
| 1571 |
|
|
LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
|
| 1572 |
|
|
LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
|
| 1573 |
|
|
LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
|
| 1574 |
|
|
fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
|
| 1575 |
|
|
fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
|
| 1576 |
|
|
}
|
| 1577 |
|
|
}
|
| 1578 |
|
|
#endif
|
| 1579 |
|
|
fs->fs_type = fmt; /* FAT sub-type */
|
| 1580 |
|
|
fs->winsect = 0; /* Invalidate sector cache */
|
| 1581 |
|
|
#if _FS_RPATH
|
| 1582 |
|
|
fs->cdir = 0; /* Current directory (root dir) */
|
| 1583 |
|
|
#endif
|
| 1584 |
|
|
fs->id = ++Fsid; /* File system mount ID */
|
| 1585 |
|
|
|
| 1586 |
|
|
return FR_OK;
|
| 1587 |
|
|
}
|
| 1588 |
|
|
|
| 1589 |
|
|
|
| 1590 |
|
|
|
| 1591 |
|
|
|
| 1592 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1593 |
|
|
/* Check if the file/dir object is valid or not */
|
| 1594 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1595 |
|
|
|
| 1596 |
|
|
static
|
| 1597 |
|
|
FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
|
| 1598 |
|
|
FATFS *fs, /* Pointer to the file system object */
|
| 1599 |
|
|
WORD id /* Member id of the target object to be checked */
|
| 1600 |
|
|
)
|
| 1601 |
|
|
{
|
| 1602 |
|
|
if (!fs || !fs->fs_type || fs->id != id)
|
| 1603 |
|
|
return FR_INVALID_OBJECT;
|
| 1604 |
|
|
|
| 1605 |
|
|
ENTER_FF(fs); /* Lock file system */
|
| 1606 |
|
|
|
| 1607 |
|
|
if (disk_status(fs->drive) & STA_NOINIT)
|
| 1608 |
|
|
return FR_NOT_READY;
|
| 1609 |
|
|
|
| 1610 |
|
|
return FR_OK;
|
| 1611 |
|
|
}
|
| 1612 |
|
|
|
| 1613 |
|
|
|
| 1614 |
|
|
|
| 1615 |
|
|
|
| 1616 |
|
|
/*--------------------------------------------------------------------------
|
| 1617 |
|
|
|
| 1618 |
|
|
Public Functions
|
| 1619 |
|
|
|
| 1620 |
|
|
--------------------------------------------------------------------------*/
|
| 1621 |
|
|
|
| 1622 |
|
|
|
| 1623 |
|
|
|
| 1624 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1625 |
|
|
/* Mount/Unmount a Locical Drive */
|
| 1626 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1627 |
|
|
|
| 1628 |
|
|
FRESULT f_mount (
|
| 1629 |
|
|
BYTE vol, /* Logical drive number to be mounted/unmounted */
|
| 1630 |
|
|
FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
|
| 1631 |
|
|
)
|
| 1632 |
|
|
{
|
| 1633 |
|
|
FATFS *rfs;
|
| 1634 |
|
|
|
| 1635 |
|
|
|
| 1636 |
|
|
if (vol >= _DRIVES) /* Check if the drive number is valid */
|
| 1637 |
|
|
return FR_INVALID_DRIVE;
|
| 1638 |
|
|
rfs = FatFs[vol]; /* Get current fs object */
|
| 1639 |
|
|
|
| 1640 |
|
|
if (rfs) {
|
| 1641 |
|
|
#if _FS_REENTRANT /* Discard sync object of the current volume */
|
| 1642 |
|
|
if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
|
| 1643 |
|
|
#endif
|
| 1644 |
|
|
rfs->fs_type = 0; /* Clear old fs object */
|
| 1645 |
|
|
}
|
| 1646 |
|
|
|
| 1647 |
|
|
if (fs) {
|
| 1648 |
|
|
fs->fs_type = 0; /* Clear new fs object */
|
| 1649 |
|
|
#if _FS_REENTRANT /* Create sync object for the new volume */
|
| 1650 |
|
|
if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
|
| 1651 |
|
|
#endif
|
| 1652 |
|
|
}
|
| 1653 |
|
|
FatFs[vol] = fs; /* Register new fs object */
|
| 1654 |
|
|
|
| 1655 |
|
|
return FR_OK;
|
| 1656 |
|
|
}
|
| 1657 |
|
|
|
| 1658 |
|
|
|
| 1659 |
|
|
|
| 1660 |
|
|
|
| 1661 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1662 |
|
|
/* Open or Create a File */
|
| 1663 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1664 |
|
|
|
| 1665 |
|
|
FRESULT f_open (
|
| 1666 |
|
|
FIL *fp, /* Pointer to the blank file object */
|
| 1667 |
|
|
const XCHAR *path, /* Pointer to the file name */
|
| 1668 |
|
|
BYTE mode /* Access mode and file open mode flags */
|
| 1669 |
|
|
)
|
| 1670 |
|
|
{
|
| 1671 |
|
|
FRESULT res;
|
| 1672 |
|
|
DIR dj;
|
| 1673 |
|
|
NAMEBUF(sfn, lfn);
|
| 1674 |
|
|
BYTE *dir;
|
| 1675 |
|
|
|
| 1676 |
|
|
|
| 1677 |
|
|
fp->fs = NULL; /* Clear file object */
|
| 1678 |
|
|
#if !_FS_READONLY
|
| 1679 |
|
|
mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);
|
| 1680 |
|
|
res = chk_mounted(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
|
| 1681 |
|
|
#else
|
| 1682 |
|
|
mode &= FA_READ;
|
| 1683 |
|
|
res = chk_mounted(&path, &dj.fs, 0);
|
| 1684 |
|
|
#endif
|
| 1685 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 1686 |
|
|
INITBUF(dj, sfn, lfn);
|
| 1687 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 1688 |
|
|
|
| 1689 |
|
|
#if !_FS_READONLY
|
| 1690 |
|
|
/* Create or Open a file */
|
| 1691 |
|
|
if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
|
| 1692 |
|
|
DWORD ps, cl;
|
| 1693 |
|
|
|
| 1694 |
|
|
if (res != FR_OK) { /* No file, create new */
|
| 1695 |
|
|
if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
|
| 1696 |
|
|
res = dir_register(&dj);
|
| 1697 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 1698 |
|
|
mode |= FA_CREATE_ALWAYS;
|
| 1699 |
|
|
dir = dj.dir; /* Created entry (SFN entry) */
|
| 1700 |
|
|
}
|
| 1701 |
|
|
else { /* Any object is already existing */
|
| 1702 |
|
|
if (mode & FA_CREATE_NEW) /* Cannot create new */
|
| 1703 |
|
|
LEAVE_FF(dj.fs, FR_EXIST);
|
| 1704 |
|
|
dir = dj.dir;
|
| 1705 |
|
|
if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR))) /* Cannot overwrite it (R/O or DIR) */
|
| 1706 |
|
|
LEAVE_FF(dj.fs, FR_DENIED);
|
| 1707 |
|
|
if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero on over write mode */
|
| 1708 |
|
|
cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
|
| 1709 |
|
|
ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
|
| 1710 |
|
|
ST_WORD(dir+DIR_FstClusLO, 0);
|
| 1711 |
|
|
ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
|
| 1712 |
|
|
dj.fs->wflag = 1;
|
| 1713 |
|
|
ps = dj.fs->winsect; /* Remove the cluster chain */
|
| 1714 |
|
|
if (cl) {
|
| 1715 |
|
|
res = remove_chain(dj.fs, cl);
|
| 1716 |
|
|
if (res) LEAVE_FF(dj.fs, res);
|
| 1717 |
|
|
dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
|
| 1718 |
|
|
}
|
| 1719 |
|
|
res = move_window(dj.fs, ps);
|
| 1720 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 1721 |
|
|
}
|
| 1722 |
|
|
}
|
| 1723 |
|
|
if (mode & FA_CREATE_ALWAYS) {
|
| 1724 |
|
|
dir[DIR_Attr] = 0; /* Reset attribute */
|
| 1725 |
|
|
ps = get_fattime();
|
| 1726 |
|
|
ST_DWORD(dir+DIR_CrtTime, ps); /* Created time */
|
| 1727 |
|
|
dj.fs->wflag = 1;
|
| 1728 |
|
|
mode |= FA__WRITTEN; /* Set file changed flag */
|
| 1729 |
|
|
}
|
| 1730 |
|
|
}
|
| 1731 |
|
|
/* Open an existing file */
|
| 1732 |
|
|
else {
|
| 1733 |
|
|
#endif /* !_FS_READONLY */
|
| 1734 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
|
| 1735 |
|
|
dir = dj.dir;
|
| 1736 |
|
|
if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
|
| 1737 |
|
|
LEAVE_FF(dj.fs, FR_NO_FILE);
|
| 1738 |
|
|
#if !_FS_READONLY
|
| 1739 |
|
|
if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
|
| 1740 |
|
|
LEAVE_FF(dj.fs, FR_DENIED);
|
| 1741 |
|
|
}
|
| 1742 |
|
|
fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
|
| 1743 |
|
|
fp->dir_ptr = dj.dir;
|
| 1744 |
|
|
#endif
|
| 1745 |
|
|
fp->flag = mode; /* File access mode */
|
| 1746 |
|
|
fp->org_clust = /* File start cluster */
|
| 1747 |
|
|
((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
|
| 1748 |
|
|
fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
|
| 1749 |
|
|
fp->fptr = 0; fp->csect = 255; /* File pointer */
|
| 1750 |
|
|
fp->dsect = 0;
|
| 1751 |
|
|
fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */
|
| 1752 |
|
|
|
| 1753 |
|
|
LEAVE_FF(dj.fs, FR_OK);
|
| 1754 |
|
|
}
|
| 1755 |
|
|
|
| 1756 |
|
|
|
| 1757 |
|
|
|
| 1758 |
|
|
|
| 1759 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1760 |
|
|
/* Read File */
|
| 1761 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1762 |
|
|
|
| 1763 |
|
|
FRESULT f_read (
|
| 1764 |
|
|
FIL *fp, /* Pointer to the file object */
|
| 1765 |
|
|
void *buff, /* Pointer to data buffer */
|
| 1766 |
|
|
UINT btr, /* Number of bytes to read */
|
| 1767 |
|
|
UINT *br /* Pointer to number of bytes read */
|
| 1768 |
|
|
)
|
| 1769 |
|
|
{
|
| 1770 |
|
|
FRESULT res;
|
| 1771 |
|
|
DWORD clst, sect, remain;
|
| 1772 |
|
|
UINT rcnt, cc;
|
| 1773 |
|
|
BYTE *rbuff = buff;
|
| 1774 |
|
|
|
| 1775 |
|
|
|
| 1776 |
|
|
*br = 0; /* Initialize bytes read */
|
| 1777 |
|
|
|
| 1778 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 1779 |
|
|
if (res != FR_OK) LEAVE_FF(fp->fs, res);
|
| 1780 |
|
|
if (fp->flag & FA__ERROR) /* Check abort flag */
|
| 1781 |
|
|
LEAVE_FF(fp->fs, FR_INT_ERR);
|
| 1782 |
|
|
if (!(fp->flag & FA_READ)) /* Check access mode */
|
| 1783 |
|
|
LEAVE_FF(fp->fs, FR_DENIED);
|
| 1784 |
|
|
remain = fp->fsize - fp->fptr;
|
| 1785 |
|
|
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
|
| 1786 |
|
|
|
| 1787 |
|
|
for ( ; btr; /* Repeat until all data transferred */
|
| 1788 |
|
|
rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
|
| 1789 |
|
|
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
|
| 1790 |
|
|
if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
|
| 1791 |
|
|
clst = (fp->fptr == 0) ? /* On the top of the file? */
|
| 1792 |
|
|
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
|
| 1793 |
|
|
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
|
| 1794 |
|
|
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
|
| 1795 |
|
|
fp->curr_clust = clst; /* Update current cluster */
|
| 1796 |
|
|
fp->csect = 0; /* Reset sector offset in the cluster */
|
| 1797 |
|
|
}
|
| 1798 |
|
|
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
|
| 1799 |
|
|
if (!sect) ABORT(fp->fs, FR_INT_ERR);
|
| 1800 |
|
|
sect += fp->csect;
|
| 1801 |
|
|
cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
|
| 1802 |
|
|
if (cc) { /* Read maximum contiguous sectors directly */
|
| 1803 |
|
|
if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
|
| 1804 |
|
|
cc = fp->fs->csize - fp->csect;
|
| 1805 |
|
|
if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
|
| 1806 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1807 |
|
|
#if !_FS_READONLY && _FS_MINIMIZE <= 2
|
| 1808 |
|
|
#if _FS_TINY
|
| 1809 |
|
|
if (fp->fs->wflag && fp->fs->winsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */
|
| 1810 |
|
|
mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
|
| 1811 |
|
|
#else
|
| 1812 |
|
|
if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */
|
| 1813 |
|
|
mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
|
| 1814 |
|
|
#endif
|
| 1815 |
|
|
#endif
|
| 1816 |
|
|
fp->csect += (BYTE)cc; /* Next sector address in the cluster */
|
| 1817 |
|
|
rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
|
| 1818 |
|
|
continue;
|
| 1819 |
|
|
}
|
| 1820 |
|
|
#if !_FS_TINY
|
| 1821 |
|
|
#if !_FS_READONLY
|
| 1822 |
|
|
if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
|
| 1823 |
|
|
if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
|
| 1824 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1825 |
|
|
fp->flag &= ~FA__DIRTY;
|
| 1826 |
|
|
}
|
| 1827 |
|
|
#endif
|
| 1828 |
|
|
if (fp->dsect != sect) { /* Fill sector buffer with file data */
|
| 1829 |
|
|
if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
|
| 1830 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1831 |
|
|
}
|
| 1832 |
|
|
#endif
|
| 1833 |
|
|
fp->dsect = sect;
|
| 1834 |
|
|
fp->csect++; /* Next sector address in the cluster */
|
| 1835 |
|
|
}
|
| 1836 |
|
|
rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
|
| 1837 |
|
|
if (rcnt > btr) rcnt = btr;
|
| 1838 |
|
|
#if _FS_TINY
|
| 1839 |
|
|
if (move_window(fp->fs, fp->dsect)) /* Move sector window */
|
| 1840 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1841 |
|
|
mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
|
| 1842 |
|
|
#else
|
| 1843 |
|
|
mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
|
| 1844 |
|
|
#endif
|
| 1845 |
|
|
}
|
| 1846 |
|
|
|
| 1847 |
|
|
LEAVE_FF(fp->fs, FR_OK);
|
| 1848 |
|
|
}
|
| 1849 |
|
|
|
| 1850 |
|
|
|
| 1851 |
|
|
|
| 1852 |
|
|
|
| 1853 |
|
|
#if !_FS_READONLY
|
| 1854 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1855 |
|
|
/* Write File */
|
| 1856 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1857 |
|
|
|
| 1858 |
|
|
FRESULT f_write (
|
| 1859 |
|
|
FIL *fp, /* Pointer to the file object */
|
| 1860 |
|
|
const void *buff, /* Pointer to the data to be written */
|
| 1861 |
|
|
UINT btw, /* Number of bytes to write */
|
| 1862 |
|
|
UINT *bw /* Pointer to number of bytes written */
|
| 1863 |
|
|
)
|
| 1864 |
|
|
{
|
| 1865 |
|
|
FRESULT res;
|
| 1866 |
|
|
DWORD clst, sect;
|
| 1867 |
|
|
UINT wcnt, cc;
|
| 1868 |
|
|
const BYTE *wbuff = buff;
|
| 1869 |
|
|
|
| 1870 |
|
|
|
| 1871 |
|
|
*bw = 0; /* Initialize bytes written */
|
| 1872 |
|
|
|
| 1873 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 1874 |
|
|
if (res != FR_OK) LEAVE_FF(fp->fs, res);
|
| 1875 |
|
|
if (fp->flag & FA__ERROR) /* Check abort flag */
|
| 1876 |
|
|
LEAVE_FF(fp->fs, FR_INT_ERR);
|
| 1877 |
|
|
if (!(fp->flag & FA_WRITE)) /* Check access mode */
|
| 1878 |
|
|
LEAVE_FF(fp->fs, FR_DENIED);
|
| 1879 |
|
|
if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
|
| 1880 |
|
|
|
| 1881 |
|
|
for ( ; btw; /* Repeat until all data transferred */
|
| 1882 |
|
|
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
|
| 1883 |
|
|
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
|
| 1884 |
|
|
if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
|
| 1885 |
|
|
if (fp->fptr == 0) { /* On the top of the file? */
|
| 1886 |
|
|
clst = fp->org_clust; /* Follow from the origin */
|
| 1887 |
|
|
if (clst == 0) /* When there is no cluster chain, */
|
| 1888 |
|
|
fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
|
| 1889 |
|
|
} else { /* Middle or end of the file */
|
| 1890 |
|
|
clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */
|
| 1891 |
|
|
}
|
| 1892 |
|
|
if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
|
| 1893 |
|
|
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
|
| 1894 |
|
|
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
|
| 1895 |
|
|
fp->curr_clust = clst; /* Update current cluster */
|
| 1896 |
|
|
fp->csect = 0; /* Reset sector address in the cluster */
|
| 1897 |
|
|
}
|
| 1898 |
|
|
#if _FS_TINY
|
| 1899 |
|
|
if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
|
| 1900 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1901 |
|
|
#else
|
| 1902 |
|
|
if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
|
| 1903 |
|
|
if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
|
| 1904 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1905 |
|
|
fp->flag &= ~FA__DIRTY;
|
| 1906 |
|
|
}
|
| 1907 |
|
|
#endif
|
| 1908 |
|
|
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
|
| 1909 |
|
|
if (!sect) ABORT(fp->fs, FR_INT_ERR);
|
| 1910 |
|
|
sect += fp->csect;
|
| 1911 |
|
|
cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
|
| 1912 |
|
|
if (cc) { /* Write maximum contiguous sectors directly */
|
| 1913 |
|
|
if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
|
| 1914 |
|
|
cc = fp->fs->csize - fp->csect;
|
| 1915 |
|
|
if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
|
| 1916 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1917 |
|
|
#if _FS_TINY
|
| 1918 |
|
|
if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
|
| 1919 |
|
|
mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
|
| 1920 |
|
|
fp->fs->wflag = 0;
|
| 1921 |
|
|
}
|
| 1922 |
|
|
#else
|
| 1923 |
|
|
if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
|
| 1924 |
|
|
mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
|
| 1925 |
|
|
fp->flag &= ~FA__DIRTY;
|
| 1926 |
|
|
}
|
| 1927 |
|
|
#endif
|
| 1928 |
|
|
fp->csect += (BYTE)cc; /* Next sector address in the cluster */
|
| 1929 |
|
|
wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
|
| 1930 |
|
|
continue;
|
| 1931 |
|
|
}
|
| 1932 |
|
|
#if _FS_TINY
|
| 1933 |
|
|
if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
|
| 1934 |
|
|
if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
|
| 1935 |
|
|
fp->fs->winsect = sect;
|
| 1936 |
|
|
}
|
| 1937 |
|
|
#else
|
| 1938 |
|
|
if (fp->dsect != sect) { /* Fill sector buffer with file data */
|
| 1939 |
|
|
if (fp->fptr < fp->fsize &&
|
| 1940 |
|
|
disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
|
| 1941 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1942 |
|
|
}
|
| 1943 |
|
|
#endif
|
| 1944 |
|
|
fp->dsect = sect;
|
| 1945 |
|
|
fp->csect++; /* Next sector address in the cluster */
|
| 1946 |
|
|
}
|
| 1947 |
|
|
wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
|
| 1948 |
|
|
if (wcnt > btw) wcnt = btw;
|
| 1949 |
|
|
#if _FS_TINY
|
| 1950 |
|
|
if (move_window(fp->fs, fp->dsect)) /* Move sector window */
|
| 1951 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 1952 |
|
|
mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
|
| 1953 |
|
|
fp->fs->wflag = 1;
|
| 1954 |
|
|
#else
|
| 1955 |
|
|
mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
|
| 1956 |
|
|
fp->flag |= FA__DIRTY;
|
| 1957 |
|
|
#endif
|
| 1958 |
|
|
}
|
| 1959 |
|
|
|
| 1960 |
|
|
if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
|
| 1961 |
|
|
fp->flag |= FA__WRITTEN; /* Set file changed flag */
|
| 1962 |
|
|
|
| 1963 |
|
|
LEAVE_FF(fp->fs, FR_OK);
|
| 1964 |
|
|
}
|
| 1965 |
|
|
|
| 1966 |
|
|
|
| 1967 |
|
|
|
| 1968 |
|
|
|
| 1969 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1970 |
|
|
/* Synchronize the File Object */
|
| 1971 |
|
|
/*-----------------------------------------------------------------------*/
|
| 1972 |
|
|
|
| 1973 |
|
|
FRESULT f_sync (
|
| 1974 |
|
|
FIL *fp /* Pointer to the file object */
|
| 1975 |
|
|
)
|
| 1976 |
|
|
{
|
| 1977 |
|
|
FRESULT res;
|
| 1978 |
|
|
DWORD tim;
|
| 1979 |
|
|
BYTE *dir;
|
| 1980 |
|
|
|
| 1981 |
|
|
|
| 1982 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 1983 |
|
|
if (res == FR_OK) {
|
| 1984 |
|
|
if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
|
| 1985 |
|
|
#if !_FS_TINY /* Write-back dirty buffer */
|
| 1986 |
|
|
if (fp->flag & FA__DIRTY) {
|
| 1987 |
|
|
if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
|
| 1988 |
|
|
LEAVE_FF(fp->fs, FR_DISK_ERR);
|
| 1989 |
|
|
fp->flag &= ~FA__DIRTY;
|
| 1990 |
|
|
}
|
| 1991 |
|
|
#endif
|
| 1992 |
|
|
/* Update the directory entry */
|
| 1993 |
|
|
res = move_window(fp->fs, fp->dir_sect);
|
| 1994 |
|
|
if (res == FR_OK) {
|
| 1995 |
|
|
dir = fp->dir_ptr;
|
| 1996 |
|
|
dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
|
| 1997 |
|
|
ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
|
| 1998 |
|
|
ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
|
| 1999 |
|
|
ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
|
| 2000 |
|
|
tim = get_fattime(); /* Updated time */
|
| 2001 |
|
|
ST_DWORD(dir+DIR_WrtTime, tim);
|
| 2002 |
|
|
fp->flag &= ~FA__WRITTEN;
|
| 2003 |
|
|
fp->fs->wflag = 1;
|
| 2004 |
|
|
res = sync(fp->fs);
|
| 2005 |
|
|
}
|
| 2006 |
|
|
}
|
| 2007 |
|
|
}
|
| 2008 |
|
|
|
| 2009 |
|
|
LEAVE_FF(fp->fs, res);
|
| 2010 |
|
|
}
|
| 2011 |
|
|
|
| 2012 |
|
|
#endif /* !_FS_READONLY */
|
| 2013 |
|
|
|
| 2014 |
|
|
|
| 2015 |
|
|
|
| 2016 |
|
|
|
| 2017 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2018 |
|
|
/* Close File */
|
| 2019 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2020 |
|
|
|
| 2021 |
|
|
FRESULT f_close (
|
| 2022 |
|
|
FIL *fp /* Pointer to the file object to be closed */
|
| 2023 |
|
|
)
|
| 2024 |
|
|
{
|
| 2025 |
|
|
FRESULT res;
|
| 2026 |
|
|
|
| 2027 |
|
|
|
| 2028 |
|
|
#if _FS_READONLY
|
| 2029 |
|
|
res = validate(fp->fs, fp->id);
|
| 2030 |
|
|
if (res == FR_OK) fp->fs = NULL;
|
| 2031 |
|
|
LEAVE_FF(fp->fs, res);
|
| 2032 |
|
|
#else
|
| 2033 |
|
|
res = f_sync(fp);
|
| 2034 |
|
|
if (res == FR_OK) fp->fs = NULL;
|
| 2035 |
|
|
return res;
|
| 2036 |
|
|
#endif
|
| 2037 |
|
|
}
|
| 2038 |
|
|
|
| 2039 |
|
|
|
| 2040 |
|
|
|
| 2041 |
|
|
|
| 2042 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2043 |
|
|
/* Change Current Drive/Directory */
|
| 2044 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2045 |
|
|
|
| 2046 |
|
|
#if _FS_RPATH
|
| 2047 |
|
|
|
| 2048 |
|
|
FRESULT f_chdrive (
|
| 2049 |
|
|
BYTE drv /* Drive number */
|
| 2050 |
|
|
)
|
| 2051 |
|
|
{
|
| 2052 |
|
|
if (drv >= _DRIVES) return FR_INVALID_DRIVE;
|
| 2053 |
|
|
|
| 2054 |
|
|
Drive = drv;
|
| 2055 |
|
|
|
| 2056 |
|
|
return FR_OK;
|
| 2057 |
|
|
}
|
| 2058 |
|
|
|
| 2059 |
|
|
|
| 2060 |
|
|
|
| 2061 |
|
|
|
| 2062 |
|
|
FRESULT f_chdir (
|
| 2063 |
|
|
const XCHAR *path /* Pointer to the directory path */
|
| 2064 |
|
|
)
|
| 2065 |
|
|
{
|
| 2066 |
|
|
FRESULT res;
|
| 2067 |
|
|
DIR dj;
|
| 2068 |
|
|
NAMEBUF(sfn, lfn);
|
| 2069 |
|
|
BYTE *dir;
|
| 2070 |
|
|
|
| 2071 |
|
|
|
| 2072 |
|
|
res = chk_mounted(&path, &dj.fs, 0);
|
| 2073 |
|
|
if (res == FR_OK) {
|
| 2074 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2075 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2076 |
|
|
if (res == FR_OK) { /* Follow completed */
|
| 2077 |
|
|
dir = dj.dir; /* Pointer to the entry */
|
| 2078 |
|
|
if (!dir) {
|
| 2079 |
|
|
dj.fs->cdir = 0; /* No entry (root dir) */
|
| 2080 |
|
|
} else {
|
| 2081 |
|
|
if (dir[DIR_Attr] & AM_DIR) /* Reached to the dir */
|
| 2082 |
|
|
dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
|
| 2083 |
|
|
else
|
| 2084 |
|
|
res = FR_NO_PATH; /* Could not reach the dir (it is a file) */
|
| 2085 |
|
|
}
|
| 2086 |
|
|
}
|
| 2087 |
|
|
if (res == FR_NO_FILE) res = FR_NO_PATH;
|
| 2088 |
|
|
}
|
| 2089 |
|
|
|
| 2090 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2091 |
|
|
}
|
| 2092 |
|
|
|
| 2093 |
|
|
#endif
|
| 2094 |
|
|
|
| 2095 |
|
|
|
| 2096 |
|
|
|
| 2097 |
|
|
#if _FS_MINIMIZE <= 2
|
| 2098 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2099 |
|
|
/* Seek File R/W Pointer */
|
| 2100 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2101 |
|
|
|
| 2102 |
|
|
FRESULT f_lseek (
|
| 2103 |
|
|
FIL *fp, /* Pointer to the file object */
|
| 2104 |
|
|
DWORD ofs /* File pointer from top of file */
|
| 2105 |
|
|
)
|
| 2106 |
|
|
{
|
| 2107 |
|
|
FRESULT res;
|
| 2108 |
|
|
DWORD clst, bcs, nsect, ifptr;
|
| 2109 |
|
|
|
| 2110 |
|
|
|
| 2111 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 2112 |
|
|
if (res != FR_OK) LEAVE_FF(fp->fs, res);
|
| 2113 |
|
|
if (fp->flag & FA__ERROR) /* Check abort flag */
|
| 2114 |
|
|
LEAVE_FF(fp->fs, FR_INT_ERR);
|
| 2115 |
|
|
if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
|
| 2116 |
|
|
#if !_FS_READONLY
|
| 2117 |
|
|
&& !(fp->flag & FA_WRITE)
|
| 2118 |
|
|
#endif
|
| 2119 |
|
|
) ofs = fp->fsize;
|
| 2120 |
|
|
|
| 2121 |
|
|
ifptr = fp->fptr;
|
| 2122 |
|
|
fp->fptr = nsect = 0; fp->csect = 255;
|
| 2123 |
|
|
if (ofs > 0) {
|
| 2124 |
|
|
bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
|
| 2125 |
|
|
if (ifptr > 0 &&
|
| 2126 |
|
|
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
|
| 2127 |
|
|
fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
|
| 2128 |
|
|
ofs -= fp->fptr;
|
| 2129 |
|
|
clst = fp->curr_clust;
|
| 2130 |
|
|
} else { /* When seek to back cluster, */
|
| 2131 |
|
|
clst = fp->org_clust; /* start from the first cluster */
|
| 2132 |
|
|
#if !_FS_READONLY
|
| 2133 |
|
|
if (clst == 0) { /* If no cluster chain, create a new chain */
|
| 2134 |
|
|
clst = create_chain(fp->fs, 0);
|
| 2135 |
|
|
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
|
| 2136 |
|
|
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
|
| 2137 |
|
|
fp->org_clust = clst;
|
| 2138 |
|
|
}
|
| 2139 |
|
|
#endif
|
| 2140 |
|
|
fp->curr_clust = clst;
|
| 2141 |
|
|
}
|
| 2142 |
|
|
if (clst != 0) {
|
| 2143 |
|
|
while (ofs > bcs) { /* Cluster following loop */
|
| 2144 |
|
|
#if !_FS_READONLY
|
| 2145 |
|
|
if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
|
| 2146 |
|
|
clst = create_chain(fp->fs, clst); /* Force streached if in write mode */
|
| 2147 |
|
|
if (clst == 0) { /* When disk gets full, clip file size */
|
| 2148 |
|
|
ofs = bcs; break;
|
| 2149 |
|
|
}
|
| 2150 |
|
|
} else
|
| 2151 |
|
|
#endif
|
| 2152 |
|
|
clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
|
| 2153 |
|
|
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
|
| 2154 |
|
|
if (clst <= 1 || clst >= fp->fs->max_clust) ABORT(fp->fs, FR_INT_ERR);
|
| 2155 |
|
|
fp->curr_clust = clst;
|
| 2156 |
|
|
fp->fptr += bcs;
|
| 2157 |
|
|
ofs -= bcs;
|
| 2158 |
|
|
}
|
| 2159 |
|
|
fp->fptr += ofs;
|
| 2160 |
|
|
fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */
|
| 2161 |
|
|
if (ofs % SS(fp->fs)) {
|
| 2162 |
|
|
nsect = clust2sect(fp->fs, clst); /* Current sector */
|
| 2163 |
|
|
if (!nsect) ABORT(fp->fs, FR_INT_ERR);
|
| 2164 |
|
|
nsect += fp->csect;
|
| 2165 |
|
|
fp->csect++;
|
| 2166 |
|
|
}
|
| 2167 |
|
|
}
|
| 2168 |
|
|
}
|
| 2169 |
|
|
if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
|
| 2170 |
|
|
#if !_FS_TINY
|
| 2171 |
|
|
#if !_FS_READONLY
|
| 2172 |
|
|
if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */
|
| 2173 |
|
|
if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
|
| 2174 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 2175 |
|
|
fp->flag &= ~FA__DIRTY;
|
| 2176 |
|
|
}
|
| 2177 |
|
|
#endif
|
| 2178 |
|
|
if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)
|
| 2179 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 2180 |
|
|
#endif
|
| 2181 |
|
|
fp->dsect = nsect;
|
| 2182 |
|
|
}
|
| 2183 |
|
|
#if !_FS_READONLY
|
| 2184 |
|
|
if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
|
| 2185 |
|
|
fp->fsize = fp->fptr;
|
| 2186 |
|
|
fp->flag |= FA__WRITTEN;
|
| 2187 |
|
|
}
|
| 2188 |
|
|
#endif
|
| 2189 |
|
|
|
| 2190 |
|
|
LEAVE_FF(fp->fs, res);
|
| 2191 |
|
|
}
|
| 2192 |
|
|
|
| 2193 |
|
|
|
| 2194 |
|
|
|
| 2195 |
|
|
|
| 2196 |
|
|
#if _FS_MINIMIZE <= 1
|
| 2197 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2198 |
|
|
/* Create a Directroy Object */
|
| 2199 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2200 |
|
|
|
| 2201 |
|
|
FRESULT f_opendir (
|
| 2202 |
|
|
DIR *dj, /* Pointer to directory object to create */
|
| 2203 |
|
|
const XCHAR *path /* Pointer to the directory path */
|
| 2204 |
|
|
)
|
| 2205 |
|
|
{
|
| 2206 |
|
|
FRESULT res;
|
| 2207 |
|
|
NAMEBUF(sfn, lfn);
|
| 2208 |
|
|
BYTE *dir;
|
| 2209 |
|
|
|
| 2210 |
|
|
|
| 2211 |
|
|
res = chk_mounted(&path, &dj->fs, 0);
|
| 2212 |
|
|
if (res == FR_OK) {
|
| 2213 |
|
|
INITBUF((*dj), sfn, lfn);
|
| 2214 |
|
|
res = follow_path(dj, path); /* Follow the path to the directory */
|
| 2215 |
|
|
if (res == FR_OK) { /* Follow completed */
|
| 2216 |
|
|
dir = dj->dir;
|
| 2217 |
|
|
if (dir) { /* It is not the root dir */
|
| 2218 |
|
|
if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
|
| 2219 |
|
|
dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
|
| 2220 |
|
|
} else { /* The object is not a directory */
|
| 2221 |
|
|
res = FR_NO_PATH;
|
| 2222 |
|
|
}
|
| 2223 |
|
|
}
|
| 2224 |
|
|
if (res == FR_OK) {
|
| 2225 |
|
|
dj->id = dj->fs->id;
|
| 2226 |
|
|
res = dir_seek(dj, 0); /* Rewind dir */
|
| 2227 |
|
|
}
|
| 2228 |
|
|
}
|
| 2229 |
|
|
if (res == FR_NO_FILE) res = FR_NO_PATH;
|
| 2230 |
|
|
}
|
| 2231 |
|
|
|
| 2232 |
|
|
LEAVE_FF(dj->fs, res);
|
| 2233 |
|
|
}
|
| 2234 |
|
|
|
| 2235 |
|
|
|
| 2236 |
|
|
|
| 2237 |
|
|
|
| 2238 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2239 |
|
|
/* Read Directory Entry in Sequense */
|
| 2240 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2241 |
|
|
|
| 2242 |
|
|
FRESULT f_readdir (
|
| 2243 |
|
|
DIR *dj, /* Pointer to the open directory object */
|
| 2244 |
|
|
FILINFO *fno /* Pointer to file information to return */
|
| 2245 |
|
|
)
|
| 2246 |
|
|
{
|
| 2247 |
|
|
FRESULT res;
|
| 2248 |
|
|
NAMEBUF(sfn, lfn);
|
| 2249 |
|
|
|
| 2250 |
|
|
|
| 2251 |
|
|
res = validate(dj->fs, dj->id); /* Check validity of the object */
|
| 2252 |
|
|
if (res == FR_OK) {
|
| 2253 |
|
|
INITBUF((*dj), sfn, lfn);
|
| 2254 |
|
|
if (!fno) {
|
| 2255 |
|
|
res = dir_seek(dj, 0);
|
| 2256 |
|
|
} else {
|
| 2257 |
|
|
res = dir_read(dj);
|
| 2258 |
|
|
if (res == FR_NO_FILE) {
|
| 2259 |
|
|
dj->sect = 0;
|
| 2260 |
|
|
res = FR_OK;
|
| 2261 |
|
|
}
|
| 2262 |
|
|
if (res == FR_OK) { /* A valid entry is found */
|
| 2263 |
|
|
get_fileinfo(dj, fno); /* Get the object information */
|
| 2264 |
|
|
res = dir_next(dj, FALSE); /* Increment index for next */
|
| 2265 |
|
|
if (res == FR_NO_FILE) {
|
| 2266 |
|
|
dj->sect = 0;
|
| 2267 |
|
|
res = FR_OK;
|
| 2268 |
|
|
}
|
| 2269 |
|
|
}
|
| 2270 |
|
|
}
|
| 2271 |
|
|
}
|
| 2272 |
|
|
|
| 2273 |
|
|
LEAVE_FF(dj->fs, res);
|
| 2274 |
|
|
}
|
| 2275 |
|
|
|
| 2276 |
|
|
|
| 2277 |
|
|
|
| 2278 |
|
|
#if _FS_MINIMIZE == 0
|
| 2279 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2280 |
|
|
/* Get File Status */
|
| 2281 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2282 |
|
|
|
| 2283 |
|
|
FRESULT f_stat (
|
| 2284 |
|
|
const XCHAR *path, /* Pointer to the file path */
|
| 2285 |
|
|
FILINFO *fno /* Pointer to file information to return */
|
| 2286 |
|
|
)
|
| 2287 |
|
|
{
|
| 2288 |
|
|
FRESULT res;
|
| 2289 |
|
|
DIR dj;
|
| 2290 |
|
|
NAMEBUF(sfn, lfn);
|
| 2291 |
|
|
|
| 2292 |
|
|
|
| 2293 |
|
|
res = chk_mounted(&path, &dj.fs, 0);
|
| 2294 |
|
|
if (res == FR_OK) {
|
| 2295 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2296 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2297 |
|
|
if (res == FR_OK) { /* Follwo completed */
|
| 2298 |
|
|
if (dj.dir) /* Found an object */
|
| 2299 |
|
|
get_fileinfo(&dj, fno);
|
| 2300 |
|
|
else /* It is root dir */
|
| 2301 |
|
|
res = FR_INVALID_NAME;
|
| 2302 |
|
|
}
|
| 2303 |
|
|
}
|
| 2304 |
|
|
|
| 2305 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2306 |
|
|
}
|
| 2307 |
|
|
|
| 2308 |
|
|
|
| 2309 |
|
|
|
| 2310 |
|
|
#if !_FS_READONLY
|
| 2311 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2312 |
|
|
/* Get Number of Free Clusters */
|
| 2313 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2314 |
|
|
|
| 2315 |
|
|
FRESULT f_getfree (
|
| 2316 |
|
|
const XCHAR *path, /* Pointer to the logical drive number (root dir) */
|
| 2317 |
|
|
DWORD *nclst, /* Pointer to the variable to return number of free clusters */
|
| 2318 |
|
|
FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
|
| 2319 |
|
|
)
|
| 2320 |
|
|
{
|
| 2321 |
|
|
FRESULT res;
|
| 2322 |
|
|
DWORD n, clst, sect, stat;
|
| 2323 |
|
|
UINT i;
|
| 2324 |
|
|
BYTE fat, *p;
|
| 2325 |
|
|
|
| 2326 |
|
|
|
| 2327 |
|
|
/* Get drive number */
|
| 2328 |
|
|
res = chk_mounted(&path, fatfs, 0);
|
| 2329 |
|
|
if (res != FR_OK) LEAVE_FF(*fatfs, res);
|
| 2330 |
|
|
|
| 2331 |
|
|
/* If number of free cluster is valid, return it without cluster scan. */
|
| 2332 |
|
|
if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
|
| 2333 |
|
|
*nclst = (*fatfs)->free_clust;
|
| 2334 |
|
|
LEAVE_FF(*fatfs, FR_OK);
|
| 2335 |
|
|
}
|
| 2336 |
|
|
|
| 2337 |
|
|
/* Get number of free clusters */
|
| 2338 |
|
|
fat = (*fatfs)->fs_type;
|
| 2339 |
|
|
n = 0;
|
| 2340 |
|
|
if (fat == FS_FAT12) {
|
| 2341 |
|
|
clst = 2;
|
| 2342 |
|
|
do {
|
| 2343 |
|
|
stat = get_fat(*fatfs, clst);
|
| 2344 |
|
|
if (stat == 0xFFFFFFFF) LEAVE_FF(*fatfs, FR_DISK_ERR);
|
| 2345 |
|
|
if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);
|
| 2346 |
|
|
if (stat == 0) n++;
|
| 2347 |
|
|
} while (++clst < (*fatfs)->max_clust);
|
| 2348 |
|
|
} else {
|
| 2349 |
|
|
clst = (*fatfs)->max_clust;
|
| 2350 |
|
|
sect = (*fatfs)->fatbase;
|
| 2351 |
|
|
i = 0; p = 0;
|
| 2352 |
|
|
do {
|
| 2353 |
|
|
if (!i) {
|
| 2354 |
|
|
res = move_window(*fatfs, sect++);
|
| 2355 |
|
|
if (res != FR_OK)
|
| 2356 |
|
|
LEAVE_FF(*fatfs, res);
|
| 2357 |
|
|
p = (*fatfs)->win;
|
| 2358 |
|
|
i = SS(*fatfs);
|
| 2359 |
|
|
}
|
| 2360 |
|
|
if (fat == FS_FAT16) {
|
| 2361 |
|
|
if (LD_WORD(p) == 0) n++;
|
| 2362 |
|
|
p += 2; i -= 2;
|
| 2363 |
|
|
} else {
|
| 2364 |
|
|
if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
|
| 2365 |
|
|
p += 4; i -= 4;
|
| 2366 |
|
|
}
|
| 2367 |
|
|
} while (--clst);
|
| 2368 |
|
|
}
|
| 2369 |
|
|
(*fatfs)->free_clust = n;
|
| 2370 |
|
|
if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
|
| 2371 |
|
|
*nclst = n;
|
| 2372 |
|
|
|
| 2373 |
|
|
LEAVE_FF(*fatfs, FR_OK);
|
| 2374 |
|
|
}
|
| 2375 |
|
|
|
| 2376 |
|
|
|
| 2377 |
|
|
|
| 2378 |
|
|
|
| 2379 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2380 |
|
|
/* Truncate File */
|
| 2381 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2382 |
|
|
|
| 2383 |
|
|
FRESULT f_truncate (
|
| 2384 |
|
|
FIL *fp /* Pointer to the file object */
|
| 2385 |
|
|
)
|
| 2386 |
|
|
{
|
| 2387 |
|
|
FRESULT res;
|
| 2388 |
|
|
DWORD ncl;
|
| 2389 |
|
|
|
| 2390 |
|
|
|
| 2391 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 2392 |
|
|
if (res != FR_OK) LEAVE_FF(fp->fs, res);
|
| 2393 |
|
|
if (fp->flag & FA__ERROR) /* Check abort flag */
|
| 2394 |
|
|
LEAVE_FF(fp->fs, FR_INT_ERR);
|
| 2395 |
|
|
if (!(fp->flag & FA_WRITE)) /* Check access mode */
|
| 2396 |
|
|
LEAVE_FF(fp->fs, FR_DENIED);
|
| 2397 |
|
|
|
| 2398 |
|
|
if (fp->fsize > fp->fptr) {
|
| 2399 |
|
|
fp->fsize = fp->fptr; /* Set file size to current R/W point */
|
| 2400 |
|
|
fp->flag |= FA__WRITTEN;
|
| 2401 |
|
|
if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
|
| 2402 |
|
|
res = remove_chain(fp->fs, fp->org_clust);
|
| 2403 |
|
|
fp->org_clust = 0;
|
| 2404 |
|
|
} else { /* When truncate a part of the file, remove remaining clusters */
|
| 2405 |
|
|
ncl = get_fat(fp->fs, fp->curr_clust);
|
| 2406 |
|
|
res = FR_OK;
|
| 2407 |
|
|
if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
|
| 2408 |
|
|
if (ncl == 1) res = FR_INT_ERR;
|
| 2409 |
|
|
if (res == FR_OK && ncl < fp->fs->max_clust) {
|
| 2410 |
|
|
res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
|
| 2411 |
|
|
if (res == FR_OK) res = remove_chain(fp->fs, ncl);
|
| 2412 |
|
|
}
|
| 2413 |
|
|
}
|
| 2414 |
|
|
}
|
| 2415 |
|
|
if (res != FR_OK) fp->flag |= FA__ERROR;
|
| 2416 |
|
|
|
| 2417 |
|
|
LEAVE_FF(fp->fs, res);
|
| 2418 |
|
|
}
|
| 2419 |
|
|
|
| 2420 |
|
|
|
| 2421 |
|
|
|
| 2422 |
|
|
|
| 2423 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2424 |
|
|
/* Delete a File or Directory */
|
| 2425 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2426 |
|
|
|
| 2427 |
|
|
FRESULT f_unlink (
|
| 2428 |
|
|
const XCHAR *path /* Pointer to the file or directory path */
|
| 2429 |
|
|
)
|
| 2430 |
|
|
{
|
| 2431 |
|
|
FRESULT res;
|
| 2432 |
|
|
DIR dj, sdj;
|
| 2433 |
|
|
NAMEBUF(sfn, lfn);
|
| 2434 |
|
|
BYTE *dir;
|
| 2435 |
|
|
DWORD dclst;
|
| 2436 |
|
|
|
| 2437 |
|
|
|
| 2438 |
|
|
res = chk_mounted(&path, &dj.fs, 1);
|
| 2439 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 2440 |
|
|
|
| 2441 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2442 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2443 |
|
|
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
|
| 2444 |
|
|
res = FR_INVALID_NAME;
|
| 2445 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
|
| 2446 |
|
|
|
| 2447 |
|
|
dir = dj.dir;
|
| 2448 |
|
|
if (!dir) /* Is it the root directory? */
|
| 2449 |
|
|
LEAVE_FF(dj.fs, FR_INVALID_NAME);
|
| 2450 |
|
|
if (dir[DIR_Attr] & AM_RDO) /* Is it a R/O object? */
|
| 2451 |
|
|
LEAVE_FF(dj.fs, FR_DENIED);
|
| 2452 |
|
|
dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
|
| 2453 |
|
|
|
| 2454 |
|
|
if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */
|
| 2455 |
|
|
if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
|
| 2456 |
|
|
mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
|
| 2457 |
|
|
sdj.sclust = dclst;
|
| 2458 |
|
|
res = dir_seek(&sdj, 2);
|
| 2459 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 2460 |
|
|
res = dir_read(&sdj);
|
| 2461 |
|
|
if (res == FR_OK) res = FR_DENIED; /* Not empty sub-dir */
|
| 2462 |
|
|
if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
|
| 2463 |
|
|
}
|
| 2464 |
|
|
|
| 2465 |
|
|
res = dir_remove(&dj); /* Remove directory entry */
|
| 2466 |
|
|
if (res == FR_OK) {
|
| 2467 |
|
|
if (dclst)
|
| 2468 |
|
|
res = remove_chain(dj.fs, dclst); /* Remove the cluster chain */
|
| 2469 |
|
|
if (res == FR_OK) res = sync(dj.fs);
|
| 2470 |
|
|
}
|
| 2471 |
|
|
|
| 2472 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2473 |
|
|
}
|
| 2474 |
|
|
|
| 2475 |
|
|
|
| 2476 |
|
|
|
| 2477 |
|
|
|
| 2478 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2479 |
|
|
/* Create a Directory */
|
| 2480 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2481 |
|
|
|
| 2482 |
|
|
FRESULT f_mkdir (
|
| 2483 |
|
|
const XCHAR *path /* Pointer to the directory path */
|
| 2484 |
|
|
)
|
| 2485 |
|
|
{
|
| 2486 |
|
|
FRESULT res;
|
| 2487 |
|
|
DIR dj;
|
| 2488 |
|
|
NAMEBUF(sfn, lfn);
|
| 2489 |
|
|
BYTE *dir, n;
|
| 2490 |
|
|
DWORD dsect, dclst, pclst, tim;
|
| 2491 |
|
|
|
| 2492 |
|
|
|
| 2493 |
|
|
res = chk_mounted(&path, &dj.fs, 1);
|
| 2494 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 2495 |
|
|
|
| 2496 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2497 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2498 |
|
|
if (res == FR_OK) res = FR_EXIST; /* Any file or directory is already existing */
|
| 2499 |
|
|
if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
|
| 2500 |
|
|
res = FR_INVALID_NAME;
|
| 2501 |
|
|
if (res != FR_NO_FILE) /* Any error occured */
|
| 2502 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2503 |
|
|
|
| 2504 |
|
|
dclst = create_chain(dj.fs, 0); /* Allocate a new cluster for new directory table */
|
| 2505 |
|
|
res = FR_OK;
|
| 2506 |
|
|
if (dclst == 0) res = FR_DENIED;
|
| 2507 |
|
|
if (dclst == 1) res = FR_INT_ERR;
|
| 2508 |
|
|
if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
|
| 2509 |
|
|
if (res == FR_OK)
|
| 2510 |
|
|
res = move_window(dj.fs, 0);
|
| 2511 |
|
|
if (res != FR_OK) LEAVE_FF(dj.fs, res);
|
| 2512 |
|
|
dsect = clust2sect(dj.fs, dclst);
|
| 2513 |
|
|
|
| 2514 |
|
|
dir = dj.fs->win; /* Initialize the new directory table */
|
| 2515 |
|
|
mem_set(dir, 0, SS(dj.fs));
|
| 2516 |
|
|
mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
|
| 2517 |
|
|
dir[DIR_Name] = '.';
|
| 2518 |
|
|
dir[DIR_Attr] = AM_DIR;
|
| 2519 |
|
|
tim = get_fattime();
|
| 2520 |
|
|
ST_DWORD(dir+DIR_WrtTime, tim);
|
| 2521 |
|
|
ST_WORD(dir+DIR_FstClusLO, dclst);
|
| 2522 |
|
|
ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
|
| 2523 |
|
|
mem_cpy(dir+32, dir, 32); /* Create ".." entry */
|
| 2524 |
|
|
dir[33] = '.';
|
| 2525 |
|
|
pclst = dj.sclust;
|
| 2526 |
|
|
if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
|
| 2527 |
|
|
pclst = 0;
|
| 2528 |
|
|
ST_WORD(dir+32+DIR_FstClusLO, pclst);
|
| 2529 |
|
|
ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
|
| 2530 |
|
|
for (n = 0; n < dj.fs->csize; n++) { /* Write dot entries and clear left sectors */
|
| 2531 |
|
|
dj.fs->winsect = dsect++;
|
| 2532 |
|
|
dj.fs->wflag = 1;
|
| 2533 |
|
|
res = move_window(dj.fs, 0);
|
| 2534 |
|
|
if (res) LEAVE_FF(dj.fs, res);
|
| 2535 |
|
|
mem_set(dir, 0, SS(dj.fs));
|
| 2536 |
|
|
}
|
| 2537 |
|
|
|
| 2538 |
|
|
res = dir_register(&dj);
|
| 2539 |
|
|
if (res != FR_OK) {
|
| 2540 |
|
|
remove_chain(dj.fs, dclst);
|
| 2541 |
|
|
} else {
|
| 2542 |
|
|
dir = dj.dir;
|
| 2543 |
|
|
dir[DIR_Attr] = AM_DIR; /* Attribute */
|
| 2544 |
|
|
ST_DWORD(dir+DIR_WrtTime, tim); /* Crated time */
|
| 2545 |
|
|
ST_WORD(dir+DIR_FstClusLO, dclst); /* Table start cluster */
|
| 2546 |
|
|
ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
|
| 2547 |
|
|
dj.fs->wflag = 1;
|
| 2548 |
|
|
res = sync(dj.fs);
|
| 2549 |
|
|
}
|
| 2550 |
|
|
|
| 2551 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2552 |
|
|
}
|
| 2553 |
|
|
|
| 2554 |
|
|
|
| 2555 |
|
|
|
| 2556 |
|
|
|
| 2557 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2558 |
|
|
/* Change File Attribute */
|
| 2559 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2560 |
|
|
|
| 2561 |
|
|
FRESULT f_chmod (
|
| 2562 |
|
|
const XCHAR *path, /* Pointer to the file path */
|
| 2563 |
|
|
BYTE value, /* Attribute bits */
|
| 2564 |
|
|
BYTE mask /* Attribute mask to change */
|
| 2565 |
|
|
)
|
| 2566 |
|
|
{
|
| 2567 |
|
|
FRESULT res;
|
| 2568 |
|
|
DIR dj;
|
| 2569 |
|
|
NAMEBUF(sfn, lfn);
|
| 2570 |
|
|
BYTE *dir;
|
| 2571 |
|
|
|
| 2572 |
|
|
|
| 2573 |
|
|
res = chk_mounted(&path, &dj.fs, 1);
|
| 2574 |
|
|
if (res == FR_OK) {
|
| 2575 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2576 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2577 |
|
|
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
|
| 2578 |
|
|
res = FR_INVALID_NAME;
|
| 2579 |
|
|
if (res == FR_OK) {
|
| 2580 |
|
|
dir = dj.dir;
|
| 2581 |
|
|
if (!dir) { /* Is it a root directory? */
|
| 2582 |
|
|
res = FR_INVALID_NAME;
|
| 2583 |
|
|
} else { /* File or sub directory */
|
| 2584 |
|
|
mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
|
| 2585 |
|
|
dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
|
| 2586 |
|
|
dj.fs->wflag = 1;
|
| 2587 |
|
|
res = sync(dj.fs);
|
| 2588 |
|
|
}
|
| 2589 |
|
|
}
|
| 2590 |
|
|
}
|
| 2591 |
|
|
|
| 2592 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2593 |
|
|
}
|
| 2594 |
|
|
|
| 2595 |
|
|
|
| 2596 |
|
|
|
| 2597 |
|
|
|
| 2598 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2599 |
|
|
/* Change Timestamp */
|
| 2600 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2601 |
|
|
|
| 2602 |
|
|
FRESULT f_utime (
|
| 2603 |
|
|
const XCHAR *path, /* Pointer to the file/directory name */
|
| 2604 |
|
|
const FILINFO *fno /* Pointer to the timestamp to be set */
|
| 2605 |
|
|
)
|
| 2606 |
|
|
{
|
| 2607 |
|
|
FRESULT res;
|
| 2608 |
|
|
DIR dj;
|
| 2609 |
|
|
NAMEBUF(sfn, lfn);
|
| 2610 |
|
|
BYTE *dir;
|
| 2611 |
|
|
|
| 2612 |
|
|
|
| 2613 |
|
|
res = chk_mounted(&path, &dj.fs, 1);
|
| 2614 |
|
|
if (res == FR_OK) {
|
| 2615 |
|
|
INITBUF(dj, sfn, lfn);
|
| 2616 |
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
| 2617 |
|
|
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
|
| 2618 |
|
|
res = FR_INVALID_NAME;
|
| 2619 |
|
|
if (res == FR_OK) {
|
| 2620 |
|
|
dir = dj.dir;
|
| 2621 |
|
|
if (!dir) { /* Root directory */
|
| 2622 |
|
|
res = FR_INVALID_NAME;
|
| 2623 |
|
|
} else { /* File or sub-directory */
|
| 2624 |
|
|
ST_WORD(dir+DIR_WrtTime, fno->ftime);
|
| 2625 |
|
|
ST_WORD(dir+DIR_WrtDate, fno->fdate);
|
| 2626 |
|
|
dj.fs->wflag = 1;
|
| 2627 |
|
|
res = sync(dj.fs);
|
| 2628 |
|
|
}
|
| 2629 |
|
|
}
|
| 2630 |
|
|
}
|
| 2631 |
|
|
|
| 2632 |
|
|
LEAVE_FF(dj.fs, res);
|
| 2633 |
|
|
}
|
| 2634 |
|
|
|
| 2635 |
|
|
|
| 2636 |
|
|
|
| 2637 |
|
|
|
| 2638 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2639 |
|
|
/* Rename File/Directory */
|
| 2640 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2641 |
|
|
|
| 2642 |
|
|
FRESULT f_rename (
|
| 2643 |
|
|
const XCHAR *path_old, /* Pointer to the old name */
|
| 2644 |
|
|
const XCHAR *path_new /* Pointer to the new name */
|
| 2645 |
|
|
)
|
| 2646 |
|
|
{
|
| 2647 |
|
|
FRESULT res;
|
| 2648 |
|
|
DIR dj_old, dj_new;
|
| 2649 |
|
|
NAMEBUF(sfn, lfn);
|
| 2650 |
|
|
BYTE buf[21], *dir;
|
| 2651 |
|
|
DWORD dw;
|
| 2652 |
|
|
|
| 2653 |
|
|
|
| 2654 |
|
|
INITBUF(dj_old, sfn, lfn);
|
| 2655 |
|
|
res = chk_mounted(&path_old, &dj_old.fs, 1);
|
| 2656 |
|
|
if (res == FR_OK) {
|
| 2657 |
|
|
dj_new.fs = dj_old.fs;
|
| 2658 |
|
|
res = follow_path(&dj_old, path_old); /* Check old object */
|
| 2659 |
|
|
if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))
|
| 2660 |
|
|
res = FR_INVALID_NAME;
|
| 2661 |
|
|
}
|
| 2662 |
|
|
if (res != FR_OK) LEAVE_FF(dj_old.fs, res); /* The old object is not found */
|
| 2663 |
|
|
|
| 2664 |
|
|
if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE); /* Is root dir? */
|
| 2665 |
|
|
mem_cpy(buf, dj_old.dir+DIR_Attr, 21); /* Save the object information */
|
| 2666 |
|
|
|
| 2667 |
|
|
mem_cpy(&dj_new, &dj_old, sizeof(DIR));
|
| 2668 |
|
|
res = follow_path(&dj_new, path_new); /* Check new object */
|
| 2669 |
|
|
if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
|
| 2670 |
|
|
if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
|
| 2671 |
|
|
res = dir_register(&dj_new); /* Register the new object */
|
| 2672 |
|
|
if (res == FR_OK) {
|
| 2673 |
|
|
dir = dj_new.dir; /* Copy object information into new entry */
|
| 2674 |
|
|
mem_cpy(dir+13, buf+2, 19);
|
| 2675 |
|
|
dir[DIR_Attr] = buf[0] | AM_ARC;
|
| 2676 |
|
|
dj_old.fs->wflag = 1;
|
| 2677 |
|
|
if (dir[DIR_Attr] & AM_DIR) { /* Update .. entry in the directory if needed */
|
| 2678 |
|
|
dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
|
| 2679 |
|
|
if (!dw) {
|
| 2680 |
|
|
res = FR_INT_ERR;
|
| 2681 |
|
|
} else {
|
| 2682 |
|
|
res = move_window(dj_new.fs, dw);
|
| 2683 |
|
|
dir = dj_new.fs->win+32;
|
| 2684 |
|
|
if (res == FR_OK && dir[1] == '.') {
|
| 2685 |
|
|
dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
|
| 2686 |
|
|
ST_WORD(dir+DIR_FstClusLO, dw);
|
| 2687 |
|
|
ST_WORD(dir+DIR_FstClusHI, dw >> 16);
|
| 2688 |
|
|
dj_new.fs->wflag = 1;
|
| 2689 |
|
|
}
|
| 2690 |
|
|
}
|
| 2691 |
|
|
}
|
| 2692 |
|
|
if (res == FR_OK) {
|
| 2693 |
|
|
res = dir_remove(&dj_old); /* Remove old entry */
|
| 2694 |
|
|
if (res == FR_OK)
|
| 2695 |
|
|
res = sync(dj_old.fs);
|
| 2696 |
|
|
}
|
| 2697 |
|
|
}
|
| 2698 |
|
|
}
|
| 2699 |
|
|
|
| 2700 |
|
|
LEAVE_FF(dj_old.fs, res);
|
| 2701 |
|
|
}
|
| 2702 |
|
|
|
| 2703 |
|
|
#endif /* !_FS_READONLY */
|
| 2704 |
|
|
#endif /* _FS_MINIMIZE == 0 */
|
| 2705 |
|
|
#endif /* _FS_MINIMIZE <= 1 */
|
| 2706 |
|
|
#endif /* _FS_MINIMIZE <= 2 */
|
| 2707 |
|
|
|
| 2708 |
|
|
|
| 2709 |
|
|
|
| 2710 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2711 |
|
|
/* Forward data to the stream directly (Available on only _FS_TINY cfg) */
|
| 2712 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2713 |
|
|
#if _USE_FORWARD && _FS_TINY
|
| 2714 |
|
|
|
| 2715 |
|
|
FRESULT f_forward (
|
| 2716 |
|
|
FIL *fp, /* Pointer to the file object */
|
| 2717 |
|
|
UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
|
| 2718 |
|
|
UINT btr, /* Number of bytes to forward */
|
| 2719 |
|
|
UINT *bf /* Pointer to number of bytes forwarded */
|
| 2720 |
|
|
)
|
| 2721 |
|
|
{
|
| 2722 |
|
|
FRESULT res;
|
| 2723 |
|
|
DWORD remain, clst, sect;
|
| 2724 |
|
|
UINT rcnt;
|
| 2725 |
|
|
|
| 2726 |
|
|
|
| 2727 |
|
|
*bf = 0;
|
| 2728 |
|
|
|
| 2729 |
|
|
res = validate(fp->fs, fp->id); /* Check validity of the object */
|
| 2730 |
|
|
if (res != FR_OK) LEAVE_FF(fp->fs, res);
|
| 2731 |
|
|
if (fp->flag & FA__ERROR) /* Check error flag */
|
| 2732 |
|
|
LEAVE_FF(fp->fs, FR_INT_ERR);
|
| 2733 |
|
|
if (!(fp->flag & FA_READ)) /* Check access mode */
|
| 2734 |
|
|
LEAVE_FF(fp->fs, FR_DENIED);
|
| 2735 |
|
|
|
| 2736 |
|
|
remain = fp->fsize - fp->fptr;
|
| 2737 |
|
|
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
|
| 2738 |
|
|
|
| 2739 |
|
|
for ( ; btr && (*func)(NULL, 0); /* Repeat until all data transferred or stream becomes busy */
|
| 2740 |
|
|
fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
|
| 2741 |
|
|
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
|
| 2742 |
|
|
if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
|
| 2743 |
|
|
clst = (fp->fptr == 0) ? /* On the top of the file? */
|
| 2744 |
|
|
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
|
| 2745 |
|
|
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
|
| 2746 |
|
|
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
|
| 2747 |
|
|
fp->curr_clust = clst; /* Update current cluster */
|
| 2748 |
|
|
fp->csect = 0; /* Reset sector address in the cluster */
|
| 2749 |
|
|
}
|
| 2750 |
|
|
fp->csect++; /* Next sector address in the cluster */
|
| 2751 |
|
|
}
|
| 2752 |
|
|
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
|
| 2753 |
|
|
if (!sect) ABORT(fp->fs, FR_INT_ERR);
|
| 2754 |
|
|
sect += fp->csect - 1;
|
| 2755 |
|
|
if (move_window(fp->fs, sect)) /* Move sector window */
|
| 2756 |
|
|
ABORT(fp->fs, FR_DISK_ERR);
|
| 2757 |
|
|
fp->dsect = sect;
|
| 2758 |
|
|
rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
|
| 2759 |
|
|
if (rcnt > btr) rcnt = btr;
|
| 2760 |
|
|
rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
|
| 2761 |
|
|
if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
|
| 2762 |
|
|
}
|
| 2763 |
|
|
|
| 2764 |
|
|
LEAVE_FF(fp->fs, FR_OK);
|
| 2765 |
|
|
}
|
| 2766 |
|
|
#endif /* _USE_FORWARD */
|
| 2767 |
|
|
|
| 2768 |
|
|
|
| 2769 |
|
|
|
| 2770 |
|
|
#if _USE_MKFS && !_FS_READONLY
|
| 2771 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2772 |
|
|
/* Create File System on the Drive */
|
| 2773 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2774 |
|
|
#define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */
|
| 2775 |
|
|
#define N_FATS 1 /* 1 or 2 */
|
| 2776 |
|
|
#define MAX_SECTOR 131072000UL /* Maximum partition size */
|
| 2777 |
|
|
#define MIN_SECTOR 2000UL /* Minimum partition size */
|
| 2778 |
|
|
|
| 2779 |
|
|
|
| 2780 |
|
|
FRESULT f_mkfs (
|
| 2781 |
|
|
BYTE drv, /* Logical drive number */
|
| 2782 |
|
|
BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */
|
| 2783 |
|
|
WORD allocsize /* Allocation unit size [bytes] */
|
| 2784 |
|
|
)
|
| 2785 |
|
|
{
|
| 2786 |
|
|
static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000, 0 };
|
| 2787 |
|
|
static const WORD cstbl[] = { 32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512 };
|
| 2788 |
|
|
BYTE fmt, m, *tbl;
|
| 2789 |
|
|
DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */
|
| 2790 |
|
|
DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */
|
| 2791 |
|
|
DWORD n_clst, d, n;
|
| 2792 |
|
|
WORD as;
|
| 2793 |
|
|
FATFS *fs;
|
| 2794 |
|
|
DSTATUS stat;
|
| 2795 |
|
|
|
| 2796 |
|
|
|
| 2797 |
|
|
/* Check validity of the parameters */
|
| 2798 |
|
|
if (drv >= _DRIVES) return FR_INVALID_DRIVE;
|
| 2799 |
|
|
if (partition >= 2) return FR_MKFS_ABORTED;
|
| 2800 |
|
|
|
| 2801 |
|
|
/* Check mounted drive and clear work area */
|
| 2802 |
|
|
fs = FatFs[drv];
|
| 2803 |
|
|
if (!fs) return FR_NOT_ENABLED;
|
| 2804 |
|
|
fs->fs_type = 0;
|
| 2805 |
|
|
drv = LD2PD(drv);
|
| 2806 |
|
|
|
| 2807 |
|
|
/* Get disk statics */
|
| 2808 |
|
|
stat = disk_initialize(drv);
|
| 2809 |
|
|
if (stat & STA_NOINIT) return FR_NOT_READY;
|
| 2810 |
|
|
if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
|
| 2811 |
|
|
#if _MAX_SS != 512 /* Get disk sector size */
|
| 2812 |
|
|
if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
|
| 2813 |
|
|
|| SS(fs) > _MAX_SS)
|
| 2814 |
|
|
return FR_MKFS_ABORTED;
|
| 2815 |
|
|
#endif
|
| 2816 |
|
|
if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
|
| 2817 |
|
|
return FR_MKFS_ABORTED;
|
| 2818 |
|
|
if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
|
| 2819 |
|
|
b_part = (!partition) ? 63 : 0; /* Boot sector */
|
| 2820 |
|
|
n_part -= b_part;
|
| 2821 |
|
|
for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */
|
| 2822 |
|
|
if (d != allocsize) allocsize = 0;
|
| 2823 |
|
|
if (!allocsize) { /* Auto selection of cluster size */
|
| 2824 |
|
|
d = n_part;
|
| 2825 |
|
|
for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;
|
| 2826 |
|
|
for (n = 0; d < sstbl[n]; n++) ;
|
| 2827 |
|
|
allocsize = cstbl[n];
|
| 2828 |
|
|
}
|
| 2829 |
|
|
if (allocsize < SS(fs)) allocsize = SS(fs);
|
| 2830 |
|
|
|
| 2831 |
|
|
allocsize /= SS(fs); /* Number of sectors per cluster */
|
| 2832 |
|
|
|
| 2833 |
|
|
/* Pre-compute number of clusters and FAT type */
|
| 2834 |
|
|
n_clst = n_part / allocsize;
|
| 2835 |
|
|
fmt = FS_FAT12;
|
| 2836 |
|
|
if (n_clst >= 0xFF5) fmt = FS_FAT16;
|
| 2837 |
|
|
if (n_clst >= 0xFFF5) fmt = FS_FAT32;
|
| 2838 |
|
|
|
| 2839 |
|
|
/* Determine offset and size of FAT structure */
|
| 2840 |
|
|
switch (fmt) {
|
| 2841 |
|
|
case FS_FAT12:
|
| 2842 |
|
|
n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
|
| 2843 |
|
|
n_rsv = 1 + partition;
|
| 2844 |
|
|
n_dir = N_ROOTDIR * 32 / SS(fs);
|
| 2845 |
|
|
break;
|
| 2846 |
|
|
case FS_FAT16:
|
| 2847 |
|
|
n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
|
| 2848 |
|
|
n_rsv = 1 + partition;
|
| 2849 |
|
|
n_dir = N_ROOTDIR * 32 / SS(fs);
|
| 2850 |
|
|
break;
|
| 2851 |
|
|
default:
|
| 2852 |
|
|
n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
|
| 2853 |
|
|
n_rsv = 33 - partition;
|
| 2854 |
|
|
n_dir = 0;
|
| 2855 |
|
|
}
|
| 2856 |
|
|
b_fat = b_part + n_rsv; /* FATs start sector */
|
| 2857 |
|
|
b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
|
| 2858 |
|
|
b_data = b_dir + n_dir; /* Data start sector */
|
| 2859 |
|
|
|
| 2860 |
|
|
/* Align data start sector to erase block boundary (for flash memory media) */
|
| 2861 |
|
|
if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;
|
| 2862 |
|
|
n = (b_data + n - 1) & ~(n - 1);
|
| 2863 |
|
|
n_fat += (n - b_data) / N_FATS;
|
| 2864 |
|
|
/* b_dir and b_data are no longer used below */
|
| 2865 |
|
|
|
| 2866 |
|
|
/* Determine number of cluster and final check of validity of the FAT type */
|
| 2867 |
|
|
n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
|
| 2868 |
|
|
if ( (fmt == FS_FAT16 && n_clst < 0xFF5)
|
| 2869 |
|
|
|| (fmt == FS_FAT32 && n_clst < 0xFFF5))
|
| 2870 |
|
|
return FR_MKFS_ABORTED;
|
| 2871 |
|
|
|
| 2872 |
|
|
/* Create partition table if needed */
|
| 2873 |
|
|
if (!partition) {
|
| 2874 |
|
|
DWORD n_disk = b_part + n_part;
|
| 2875 |
|
|
|
| 2876 |
|
|
mem_set(fs->win, 0, SS(fs));
|
| 2877 |
|
|
tbl = fs->win+MBR_Table;
|
| 2878 |
|
|
ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
|
| 2879 |
|
|
if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
|
| 2880 |
|
|
n_disk = n_disk / 63 / 255;
|
| 2881 |
|
|
tbl[7] = (BYTE)n_disk;
|
| 2882 |
|
|
tbl[6] = (BYTE)((n_disk >> 2) | 63);
|
| 2883 |
|
|
} else {
|
| 2884 |
|
|
ST_WORD(&tbl[6], 0xFFFF);
|
| 2885 |
|
|
}
|
| 2886 |
|
|
tbl[5] = 254;
|
| 2887 |
|
|
if (fmt != FS_FAT32) /* System ID */
|
| 2888 |
|
|
tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
|
| 2889 |
|
|
else
|
| 2890 |
|
|
tbl[4] = 0x0c;
|
| 2891 |
|
|
ST_DWORD(tbl+8, 63); /* Partition start in LBA */
|
| 2892 |
|
|
ST_DWORD(tbl+12, n_part); /* Partition size in LBA */
|
| 2893 |
|
|
ST_WORD(tbl+64, 0xAA55); /* Signature */
|
| 2894 |
|
|
if (disk_write(drv, fs->win, 0, 1) != RES_OK)
|
| 2895 |
|
|
return FR_DISK_ERR;
|
| 2896 |
|
|
partition = 0xF8;
|
| 2897 |
|
|
} else {
|
| 2898 |
|
|
partition = 0xF0;
|
| 2899 |
|
|
}
|
| 2900 |
|
|
|
| 2901 |
|
|
/* Create boot record */
|
| 2902 |
|
|
tbl = fs->win; /* Clear buffer */
|
| 2903 |
|
|
mem_set(tbl, 0, SS(fs));
|
| 2904 |
|
|
ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
|
| 2905 |
|
|
ST_WORD(tbl+BPB_BytsPerSec, SS(fs)); /* Sector size */
|
| 2906 |
|
|
tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */
|
| 2907 |
|
|
ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
|
| 2908 |
|
|
tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
|
| 2909 |
|
|
ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
|
| 2910 |
|
|
if (n_part < 0x10000) { /* Number of total sectors */
|
| 2911 |
|
|
ST_WORD(tbl+BPB_TotSec16, n_part);
|
| 2912 |
|
|
} else {
|
| 2913 |
|
|
ST_DWORD(tbl+BPB_TotSec32, n_part);
|
| 2914 |
|
|
}
|
| 2915 |
|
|
tbl[BPB_Media] = partition; /* Media descripter */
|
| 2916 |
|
|
ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
|
| 2917 |
|
|
ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
|
| 2918 |
|
|
ST_DWORD(tbl+BPB_HiddSec, b_part); /* Hidden sectors */
|
| 2919 |
|
|
n = get_fattime(); /* Use current time as a VSN */
|
| 2920 |
|
|
if (fmt != FS_FAT32) {
|
| 2921 |
|
|
ST_DWORD(tbl+BS_VolID, n); /* Volume serial number */
|
| 2922 |
|
|
ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of secters per FAT */
|
| 2923 |
|
|
tbl[BS_DrvNum] = 0x80; /* Drive number */
|
| 2924 |
|
|
tbl[BS_BootSig] = 0x29; /* Extended boot signature */
|
| 2925 |
|
|
mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume lavel, FAT signature */
|
| 2926 |
|
|
} else {
|
| 2927 |
|
|
ST_DWORD(tbl+BS_VolID32, n); /* Volume serial number */
|
| 2928 |
|
|
ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of secters per FAT */
|
| 2929 |
|
|
ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory cluster (2) */
|
| 2930 |
|
|
ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (bs+1) */
|
| 2931 |
|
|
ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (bs+6) */
|
| 2932 |
|
|
tbl[BS_DrvNum32] = 0x80; /* Drive number */
|
| 2933 |
|
|
tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
|
| 2934 |
|
|
mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume lavel, FAT signature */
|
| 2935 |
|
|
}
|
| 2936 |
|
|
ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature */
|
| 2937 |
|
|
if (SS(fs) > 512U) {
|
| 2938 |
|
|
ST_WORD(tbl+SS(fs)-2, 0xAA55);
|
| 2939 |
|
|
}
|
| 2940 |
|
|
if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
|
| 2941 |
|
|
return FR_DISK_ERR;
|
| 2942 |
|
|
if (fmt == FS_FAT32)
|
| 2943 |
|
|
disk_write(drv, tbl, b_part+6, 1);
|
| 2944 |
|
|
|
| 2945 |
|
|
/* Initialize FAT area */
|
| 2946 |
|
|
for (m = 0; m < N_FATS; m++) {
|
| 2947 |
|
|
mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
|
| 2948 |
|
|
if (fmt != FS_FAT32) {
|
| 2949 |
|
|
n = (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
|
| 2950 |
|
|
n |= partition;
|
| 2951 |
|
|
ST_DWORD(tbl, n); /* Reserve cluster #0-1 (FAT12/16) */
|
| 2952 |
|
|
} else {
|
| 2953 |
|
|
ST_DWORD(tbl+0, 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */
|
| 2954 |
|
|
ST_DWORD(tbl+4, 0xFFFFFFFF);
|
| 2955 |
|
|
ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
|
| 2956 |
|
|
}
|
| 2957 |
|
|
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
|
| 2958 |
|
|
return FR_DISK_ERR;
|
| 2959 |
|
|
mem_set(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */
|
| 2960 |
|
|
for (n = 1; n < n_fat; n++) {
|
| 2961 |
|
|
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
|
| 2962 |
|
|
return FR_DISK_ERR;
|
| 2963 |
|
|
}
|
| 2964 |
|
|
}
|
| 2965 |
|
|
|
| 2966 |
|
|
/* Initialize Root directory */
|
| 2967 |
|
|
m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
|
| 2968 |
|
|
do {
|
| 2969 |
|
|
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
|
| 2970 |
|
|
return FR_DISK_ERR;
|
| 2971 |
|
|
} while (--m);
|
| 2972 |
|
|
|
| 2973 |
|
|
/* Create FSInfo record if needed */
|
| 2974 |
|
|
if (fmt == FS_FAT32) {
|
| 2975 |
|
|
ST_WORD(tbl+BS_55AA, 0xAA55);
|
| 2976 |
|
|
ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
|
| 2977 |
|
|
ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
|
| 2978 |
|
|
ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
|
| 2979 |
|
|
ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
|
| 2980 |
|
|
disk_write(drv, tbl, b_part+1, 1);
|
| 2981 |
|
|
disk_write(drv, tbl, b_part+7, 1);
|
| 2982 |
|
|
}
|
| 2983 |
|
|
|
| 2984 |
|
|
return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
|
| 2985 |
|
|
}
|
| 2986 |
|
|
|
| 2987 |
|
|
#endif /* _USE_MKFS && !_FS_READONLY */
|
| 2988 |
|
|
|
| 2989 |
|
|
|
| 2990 |
|
|
|
| 2991 |
|
|
|
| 2992 |
|
|
#if _USE_STRFUNC
|
| 2993 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2994 |
|
|
/* Get a string from the file */
|
| 2995 |
|
|
/*-----------------------------------------------------------------------*/
|
| 2996 |
|
|
char* f_gets (
|
| 2997 |
|
|
char* buff, /* Pointer to the string buffer to read */
|
| 2998 |
|
|
int len, /* Size of string buffer */
|
| 2999 |
|
|
FIL* fil /* Pointer to the file object */
|
| 3000 |
|
|
)
|
| 3001 |
|
|
{
|
| 3002 |
|
|
int i = 0;
|
| 3003 |
|
|
char *p = buff;
|
| 3004 |
|
|
UINT rc;
|
| 3005 |
|
|
|
| 3006 |
|
|
|
| 3007 |
|
|
while (i < len - 1) { /* Read bytes until buffer gets filled */
|
| 3008 |
|
|
f_read(fil, p, 1, &rc);
|
| 3009 |
|
|
if (rc != 1) break; /* Break when no data to read */
|
| 3010 |
|
|
#if _USE_STRFUNC >= 2
|
| 3011 |
|
|
if (*p == '\r') continue; /* Strip '\r' */
|
| 3012 |
|
|
#endif
|
| 3013 |
|
|
i++;
|
| 3014 |
|
|
if (*p++ == '\n') break; /* Break when reached end of line */
|
| 3015 |
|
|
}
|
| 3016 |
|
|
*p = 0;
|
| 3017 |
|
|
return i ? buff : NULL; /* When no data read (eof or error), return with error. */
|
| 3018 |
|
|
}
|
| 3019 |
|
|
|
| 3020 |
|
|
|
| 3021 |
|
|
|
| 3022 |
|
|
#if !_FS_READONLY
|
| 3023 |
|
|
#include <stdarg.h>
|
| 3024 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3025 |
|
|
/* Put a character to the file */
|
| 3026 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3027 |
|
|
int f_putc (
|
| 3028 |
|
|
int chr, /* A character to be output */
|
| 3029 |
|
|
FIL* fil /* Ponter to the file object */
|
| 3030 |
|
|
)
|
| 3031 |
|
|
{
|
| 3032 |
|
|
UINT bw;
|
| 3033 |
|
|
char c;
|
| 3034 |
|
|
|
| 3035 |
|
|
|
| 3036 |
|
|
#if _USE_STRFUNC >= 2
|
| 3037 |
|
|
if (chr == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
|
| 3038 |
|
|
#endif
|
| 3039 |
|
|
if (!fil) { /* Special value may be used to switch the destination to any other device */
|
| 3040 |
|
|
/* put_console(chr); */
|
| 3041 |
|
|
return chr;
|
| 3042 |
|
|
}
|
| 3043 |
|
|
c = (char)chr;
|
| 3044 |
|
|
f_write(fil, &c, 1, &bw); /* Write a byte to the file */
|
| 3045 |
|
|
return bw ? chr : EOF; /* Return the result */
|
| 3046 |
|
|
}
|
| 3047 |
|
|
|
| 3048 |
|
|
|
| 3049 |
|
|
|
| 3050 |
|
|
|
| 3051 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3052 |
|
|
/* Put a string to the file */
|
| 3053 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3054 |
|
|
int f_puts (
|
| 3055 |
|
|
const char* str, /* Pointer to the string to be output */
|
| 3056 |
|
|
FIL* fil /* Pointer to the file object */
|
| 3057 |
|
|
)
|
| 3058 |
|
|
{
|
| 3059 |
|
|
int n;
|
| 3060 |
|
|
|
| 3061 |
|
|
|
| 3062 |
|
|
for (n = 0; *str; str++, n++) {
|
| 3063 |
|
|
if (f_putc(*str, fil) == EOF) return EOF;
|
| 3064 |
|
|
}
|
| 3065 |
|
|
return n;
|
| 3066 |
|
|
}
|
| 3067 |
|
|
|
| 3068 |
|
|
|
| 3069 |
|
|
|
| 3070 |
|
|
|
| 3071 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3072 |
|
|
/* Put a formatted string to the file */
|
| 3073 |
|
|
/*-----------------------------------------------------------------------*/
|
| 3074 |
|
|
int f_printf (
|
| 3075 |
|
|
FIL* fil, /* Pointer to the file object */
|
| 3076 |
|
|
const char* str, /* Pointer to the format string */
|
| 3077 |
|
|
... /* Optional arguments... */
|
| 3078 |
|
|
)
|
| 3079 |
|
|
{
|
| 3080 |
|
|
va_list arp;
|
| 3081 |
|
|
UCHAR c, f, r;
|
| 3082 |
|
|
ULONG val;
|
| 3083 |
|
|
char s[16];
|
| 3084 |
|
|
int i, w, res, cc;
|
| 3085 |
|
|
|
| 3086 |
|
|
|
| 3087 |
|
|
va_start(arp, str);
|
| 3088 |
|
|
|
| 3089 |
|
|
for (cc = res = 0; cc != EOF; res += cc) {
|
| 3090 |
|
|
c = *str++;
|
| 3091 |
|
|
if (c == 0) break; /* End of string */
|
| 3092 |
|
|
if (c != '%') { /* Non escape cahracter */
|
| 3093 |
|
|
cc = f_putc(c, fil);
|
| 3094 |
|
|
if (cc != EOF) cc = 1;
|
| 3095 |
|
|
continue;
|
| 3096 |
|
|
}
|
| 3097 |
|
|
w = f = 0;
|
| 3098 |
|
|
c = *str++;
|
| 3099 |
|
|
if (c == '0') { /* Flag: '0' padding */
|
| 3100 |
|
|
f = 1; c = *str++;
|
| 3101 |
|
|
}
|
| 3102 |
|
|
while (c >= '0' && c <= '9') { /* Precision */
|
| 3103 |
|
|
w = w * 10 + (c - '0');
|
| 3104 |
|
|
c = *str++;
|
| 3105 |
|
|
}
|
| 3106 |
|
|
if (c == 'l') { /* Prefix: Size is long int */
|
| 3107 |
|
|
f |= 2; c = *str++;
|
| 3108 |
|
|
}
|
| 3109 |
|
|
if (c == 's') { /* Type is string */
|
| 3110 |
|
|
cc = f_puts(va_arg(arp, char*), fil);
|
| 3111 |
|
|
continue;
|
| 3112 |
|
|
}
|
| 3113 |
|
|
if (c == 'c') { /* Type is character */
|
| 3114 |
|
|
cc = f_putc(va_arg(arp, int), fil);
|
| 3115 |
|
|
if (cc != EOF) cc = 1;
|
| 3116 |
|
|
continue;
|
| 3117 |
|
|
}
|
| 3118 |
|
|
r = 0;
|
| 3119 |
|
|
if (c == 'd') r = 10; /* Type is signed decimal */
|
| 3120 |
|
|
if (c == 'u') r = 10; /* Type is unsigned decimal */
|
| 3121 |
|
|
if (c == 'X') r = 16; /* Type is unsigned hexdecimal */
|
| 3122 |
|
|
if (r == 0) break; /* Unknown type */
|
| 3123 |
|
|
if (f & 2) { /* Get the value */
|
| 3124 |
|
|
val = (ULONG)va_arg(arp, long);
|
| 3125 |
|
|
} else {
|
| 3126 |
|
|
val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
|
| 3127 |
|
|
}
|
| 3128 |
|
|
/* Put numeral string */
|
| 3129 |
|
|
if (c == 'd') {
|
| 3130 |
|
|
if (val & 0x80000000) {
|
| 3131 |
|
|
val = 0 - val;
|
| 3132 |
|
|
f |= 4;
|
| 3133 |
|
|
}
|
| 3134 |
|
|
}
|
| 3135 |
|
|
i = sizeof(s) - 1; s[i] = 0;
|
| 3136 |
|
|
do {
|
| 3137 |
|
|
c = (UCHAR)(val % r + '0');
|
| 3138 |
|
|
if (c > '9') c += 7;
|
| 3139 |
|
|
s[--i] = c;
|
| 3140 |
|
|
val /= r;
|
| 3141 |
|
|
} while (i && val);
|
| 3142 |
|
|
if (i && (f & 4)) s[--i] = '-';
|
| 3143 |
|
|
w = sizeof(s) - 1 - w;
|
| 3144 |
|
|
while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
|
| 3145 |
|
|
cc = f_puts(&s[i], fil);
|
| 3146 |
|
|
}
|
| 3147 |
|
|
|
| 3148 |
|
|
va_end(arp);
|
| 3149 |
|
|
return (cc == EOF) ? cc : res;
|
| 3150 |
|
|
}
|
| 3151 |
|
|
|
| 3152 |
|
|
#endif /* !_FS_READONLY */
|
| 3153 |
|
|
#endif /* _USE_STRFUNC */
|
