tmk_core/tool/mbed/mbed-sdk/libraries/fs/fat/ChaN/ff.h

   1 /*---------------------------------------------------------------------------/
   2 /  FatFs - FAT file system module include file  R0.09a    (C)ChaN, 2012
   3 /----------------------------------------------------------------------------/
   4 / FatFs module is a generic FAT file system module for small embedded systems.
   5 / This is a free software that opened for education, research and commercial
   6 / developments under license policy of following terms.
   7 /
   8 /  Copyright (C) 2012, 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 product UNDER YOUR RESPONSIBILITY.
  13 / * Redistributions of source code must retain the above copyright notice.
  14 /
  15 /----------------------------------------------------------------------------*/
  16
  17 #ifndef _FATFS
  18 #define _FATFS  4004    /* Revision ID */
  19
  20 #ifdef __cplusplus
  21 extern "C" {
  22 #endif
  23
  24 #include "integer.h"    /* Basic integer types */
  25 #include "ffconf.h"     /* FatFs configuration options */
  26
  27 #if _FATFS != _FFCONF
  28 #error Wrong configuration file (ffconf.h).
  29 #endif
  30
  31
  32
  33 /* Definitions of volume management */
  34
  35 #if _MULTI_PARTITION        /* Multiple partition configuration */
  36 typedef struct {
  37     BYTE pd;    /* Physical drive number */
  38     BYTE pt;    /* Partition: 0:Auto detect, 1-4:Forced partition) */
  39 } PARTITION;
  40 extern PARTITION VolToPart[];   /* Volume - Partition resolution table */
  41 #define LD2PD(vol) (VolToPart[vol].pd)  /* Get physical drive number */
  42 #define LD2PT(vol) (VolToPart[vol].pt)  /* Get partition index */
  43
  44 #else                           /* Single partition configuration */
  45 #define LD2PD(vol) (BYTE)(vol)  /* Each logical drive is bound to the same physical drive number */
  46 #define LD2PT(vol) 0            /* Always mounts the 1st partition or in SFD */
  47
  48 #endif
  49
  50
  51
  52 /* Type of path name strings on FatFs API */
  53
  54 #if _LFN_UNICODE            /* Unicode string */
  55 #if !_USE_LFN
  56 #error _LFN_UNICODE must be 0 in non-LFN cfg.
  57 #endif
  58 #ifndef _INC_TCHAR
  59 typedef WCHAR TCHAR;
  60 #define _T(x) L ## x
  61 #define _TEXT(x) L ## x
  62 #endif
  63
  64 #else                       /* ANSI/OEM string */
  65 #ifndef _INC_TCHAR
  66 typedef char TCHAR;
  67 #define _T(x) x
  68 #define _TEXT(x) x
  69 #endif
  70
  71 #endif
  72
  73
  74
  75 /* File system object structure (FATFS) */
  76
  77 typedef struct {
  78     BYTE    fs_type;        /* FAT sub-type (0:Not mounted) */
  79     BYTE    drv;            /* Physical drive number */
  80     BYTE    csize;          /* Sectors per cluster (1,2,4...128) */
  81     BYTE    n_fats;         /* Number of FAT copies (1,2) */
  82     BYTE    wflag;          /* win[] dirty flag (1:must be written back) */
  83     BYTE    fsi_flag;       /* fsinfo dirty flag (1:must be written back) */
  84     WORD    id;             /* File system mount ID */
  85     WORD    n_rootdir;      /* Number of root directory entries (FAT12/16) */
  86 #if _MAX_SS != 512
  87     WORD    ssize;          /* Bytes per sector (512, 1024, 2048 or 4096) */
  88 #endif
  89 #if _FS_REENTRANT
  90     _SYNC_t sobj;           /* Identifier of sync object */
  91 #endif
  92 #if !_FS_READONLY
  93     DWORD   last_clust;     /* Last allocated cluster */
  94     DWORD   free_clust;     /* Number of free clusters */
  95     DWORD   fsi_sector;     /* fsinfo sector (FAT32) */
  96 #endif
  97 #if _FS_RPATH
  98     DWORD   cdir;           /* Current directory start cluster (0:root) */
  99 #endif
 100     DWORD   n_fatent;       /* Number of FAT entries (= number of clusters + 2) */
 101     DWORD   fsize;          /* Sectors per FAT */
 102     DWORD   fatbase;        /* FAT start sector */
 103     DWORD   dirbase;        /* Root directory start sector (FAT32:Cluster#) */
 104     DWORD   database;       /* Data start sector */
 105     DWORD   winsect;        /* Current sector appearing in the win[] */
 106     BYTE    win[_MAX_SS];   /* Disk access window for Directory, FAT (and Data on tiny cfg) */
 107 } FATFS;
 108
 109
 110
 111 /* File object structure (FIL) */
 112
 113 typedef struct {
 114     FATFS*  fs;             /* Pointer to the related file system object */
 115     WORD    id;             /* File system mount ID of the related file system object */
 116     BYTE    flag;           /* File status flags */
 117     BYTE    pad1;
 118     DWORD   fptr;           /* File read/write pointer (0ed on file open) */
 119     DWORD   fsize;          /* File size */
 120     DWORD   sclust;         /* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
 121     DWORD   clust;          /* Current cluster of fpter */
 122     DWORD   dsect;          /* Current data sector of fpter */
 123 #if !_FS_READONLY
 124     DWORD   dir_sect;       /* Sector containing the directory entry */
 125     BYTE*   dir_ptr;        /* Pointer to the directory entry in the window */
 126 #endif
 127 #if _USE_FASTSEEK
 128     DWORD*  cltbl;          /* Pointer to the cluster link map table (null on file open) */
 129 #endif
 130 #if _FS_LOCK
 131     UINT    lockid;         /* File lock ID (index of file semaphore table Files[]) */
 132 #endif
 133 #if !_FS_TINY
 134     BYTE    buf[_MAX_SS];   /* File data read/write buffer */
 135 #endif
 136 } FIL;
 137
 138
 139
 140 /* Directory object structure (DIR) */
 141
 142 typedef struct {
 143     FATFS*  fs;             /* Pointer to the owner file system object */
 144     WORD    id;             /* Owner file system mount ID */
 145     WORD    index;          /* Current read/write index number */
 146     DWORD   sclust;         /* Table start cluster (0:Root dir) */
 147     DWORD   clust;          /* Current cluster */
 148     DWORD   sect;           /* Current sector */
 149     BYTE*   dir;            /* Pointer to the current SFN entry in the win[] */
 150     BYTE*   fn;             /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
 151 #if _USE_LFN
 152     WCHAR*  lfn;            /* Pointer to the LFN working buffer */
 153     WORD    lfn_idx;        /* Last matched LFN index number (0xFFFF:No LFN) */
 154 #endif
 155 } FATFS_DIR;
 156
 157
 158
 159 /* File status structure (FILINFO) */
 160
 161 typedef struct {
 162     DWORD   fsize;          /* File size */
 163     WORD    fdate;          /* Last modified date */
 164     WORD    ftime;          /* Last modified time */
 165     BYTE    fattrib;        /* Attribute */
 166     TCHAR   fname[13];      /* Short file name (8.3 format) */
 167 #if _USE_LFN
 168     TCHAR*  lfname;         /* Pointer to the LFN buffer */
 169     UINT    lfsize;         /* Size of LFN buffer in TCHAR */
 170 #endif
 171 } FILINFO;
 172
 173
 174
 175 /* File function return code (FRESULT) */
 176
 177 typedef enum {
 178     FR_OK = 0,              /* (0) Succeeded */
 179     FR_DISK_ERR,            /* (1) A hard error occurred in the low level disk I/O layer */
 180     FR_INT_ERR,             /* (2) Assertion failed */
 181     FR_NOT_READY,           /* (3) The physical drive cannot work */
 182     FR_NO_FILE,             /* (4) Could not find the file */
 183     FR_NO_PATH,             /* (5) Could not find the path */
 184     FR_INVALID_NAME,        /* (6) The path name format is invalid */
 185     FR_DENIED,              /* (7) Access denied due to prohibited access or directory full */
 186     FR_EXIST,               /* (8) Access denied due to prohibited access */
 187     FR_INVALID_OBJECT,      /* (9) The file/directory object is invalid */
 188     FR_WRITE_PROTECTED,     /* (10) The physical drive is write protected */
 189     FR_INVALID_DRIVE,       /* (11) The logical drive number is invalid */
 190     FR_NOT_ENABLED,         /* (12) The volume has no work area */
 191     FR_NO_FILESYSTEM,       /* (13) There is no valid FAT volume */
 192     FR_MKFS_ABORTED,        /* (14) The f_mkfs() aborted due to any parameter error */
 193     FR_TIMEOUT,             /* (15) Could not get a grant to access the volume within defined period */
 194     FR_LOCKED,              /* (16) The operation is rejected according to the file sharing policy */
 195     FR_NOT_ENOUGH_CORE,     /* (17) LFN working buffer could not be allocated */
 196     FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
 197     FR_INVALID_PARAMETER    /* (19) Given parameter is invalid */
 198 } FRESULT;
 199
 200
 201
 202 /*--------------------------------------------------------------*/
 203 /* FatFs module application interface                           */
 204
 205 FRESULT f_mount (BYTE, FATFS*);                     /* Mount/Unmount a logical drive */
 206 FRESULT f_open (FIL*, const TCHAR*, BYTE);          /* Open or create a file */
 207 FRESULT f_read (FIL*, void*, UINT, UINT*);          /* Read data from a file */
 208 FRESULT f_lseek (FIL*, DWORD);                      /* Move file pointer of a file object */
 209 FRESULT f_close (FIL*);                             /* Close an open file object */
 210 FRESULT f_opendir (FATFS_DIR*, const TCHAR*);             /* Open an existing directory */
 211 FRESULT f_readdir (FATFS_DIR*, FILINFO*);                 /* Read a directory item */
 212 FRESULT f_stat (const TCHAR*, FILINFO*);            /* Get file status */
 213 FRESULT f_write (FIL*, const void*, UINT, UINT*);   /* Write data to a file */
 214 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**);  /* Get number of free clusters on the drive */
 215 FRESULT f_truncate (FIL*);                          /* Truncate file */
 216 FRESULT f_sync (FIL*);                              /* Flush cached data of a writing file */
 217 FRESULT f_unlink (const TCHAR*);                    /* Delete an existing file or directory */
 218 FRESULT f_mkdir (const TCHAR*);                     /* Create a new directory */
 219 FRESULT f_chmod (const TCHAR*, BYTE, BYTE);         /* Change attribute of the file/dir */
 220 FRESULT f_utime (const TCHAR*, const FILINFO*);     /* Change times-tamp of the file/dir */
 221 FRESULT f_rename (const TCHAR*, const TCHAR*);      /* Rename/Move a file or directory */
 222 FRESULT f_chdrive (BYTE);                           /* Change current drive */
 223 FRESULT f_chdir (const TCHAR*);                     /* Change current directory */
 224 FRESULT f_getcwd (TCHAR*, UINT);                    /* Get current directory */
 225 FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*);   /* Forward data to the stream */
 226 FRESULT f_mkfs (BYTE, BYTE, UINT);                  /* Create a file system on the drive */
 227 FRESULT f_fdisk (BYTE, const DWORD[], void*);       /* Divide a physical drive into some partitions */
 228 int f_putc (TCHAR, FIL*);                           /* Put a character to the file */
 229 int f_puts (const TCHAR*, FIL*);                    /* Put a string to the file */
 230 int f_printf (FIL*, const TCHAR*, ...);             /* Put a formatted string to the file */
 231 TCHAR* f_gets (TCHAR*, int, FIL*);                  /* Get a string from the file */
 232
 233 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
 234 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
 235 #define f_tell(fp) ((fp)->fptr)
 236 #define f_size(fp) ((fp)->fsize)
 237
 238 #ifndef EOF
 239 #define EOF (-1)
 240 #endif
 241
 242
 243
 244
 245 /*--------------------------------------------------------------*/
 246 /* Additional user defined functions                            */
 247
 248 /* RTC function */
 249 #if !_FS_READONLY
 250 DWORD get_fattime (void);
 251 #endif
 252
 253 /* Unicode support functions */
 254 #if _USE_LFN                        /* Unicode - OEM code conversion */
 255 WCHAR ff_convert (WCHAR, UINT);     /* OEM-Unicode bidirectional conversion */
 256 WCHAR ff_wtoupper (WCHAR);          /* Unicode upper-case conversion */
 257 #if _USE_LFN == 3                   /* Memory functions */
 258 void* ff_memalloc (UINT);           /* Allocate memory block */
 259 void ff_memfree (void*);            /* Free memory block */
 260 #endif
 261 #endif
 262
 263 /* Sync functions */
 264 #if _FS_REENTRANT
 265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
 266 int ff_req_grant (_SYNC_t);         /* Lock sync object */
 267 void ff_rel_grant (_SYNC_t);        /* Unlock sync object */
 268 int ff_del_syncobj (_SYNC_t);       /* Delete a sync object */
 269 #endif
 270
 271
 272
 273
 274 /*--------------------------------------------------------------*/
 275 /* Flags and offset address                                     */
 276
 277
 278 /* File access control and file status flags (FIL.flag) */
 279
 280 #define FA_READ             0x01
 281 #define FA_OPEN_EXISTING    0x00
 282 #define FA__ERROR           0x80
 283
 284 #if !_FS_READONLY
 285 #define FA_WRITE            0x02
 286 #define FA_CREATE_NEW       0x04
 287 #define FA_CREATE_ALWAYS    0x08
 288 #define FA_OPEN_ALWAYS      0x10
 289 #define FA__WRITTEN         0x20
 290 #define FA__DIRTY           0x40
 291 #endif
 292
 293
 294 /* FAT sub type (FATFS.fs_type) */
 295
 296 #define FS_FAT12    1
 297 #define FS_FAT16    2
 298 #define FS_FAT32    3
 299
 300
 301 /* File attribute bits for directory entry */
 302
 303 #define AM_RDO  0x01    /* Read only */
 304 #define AM_HID  0x02    /* Hidden */
 305 #define AM_SYS  0x04    /* System */
 306 #define AM_VOL  0x08    /* Volume label */
 307 #define AM_LFN  0x0F    /* LFN entry */
 308 #define AM_DIR  0x10    /* Directory */
 309 #define AM_ARC  0x20    /* Archive */
 310 #define AM_MASK 0x3F    /* Mask of defined bits */
 311
 312
 313 /* Fast seek feature */
 314 #define CREATE_LINKMAP  0xFFFFFFFF
 315
 316
 317
 318 /*--------------------------------*/
 319 /* Multi-byte word access macros  */
 320
 321 #if _WORD_ACCESS == 1   /* Enable word access to the FAT structure */
 322 #define LD_WORD(ptr)        (WORD)(*(WORD*)(BYTE*)(ptr))
 323 #define LD_DWORD(ptr)       (DWORD)(*(DWORD*)(BYTE*)(ptr))
 324 #define ST_WORD(ptr,val)    *(WORD*)(BYTE*)(ptr)=(WORD)(val)
 325 #define ST_DWORD(ptr,val)   *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
 326 #else                   /* Use byte-by-byte access to the FAT structure */
 327 #define LD_WORD(ptr)        (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
 328 #define LD_DWORD(ptr)       (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
 329 #define ST_WORD(ptr,val)    *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
 330 #define ST_DWORD(ptr,val)   *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8); *((BYTE*)(ptr)+2)=(BYTE)((DWORD)(val)>>16); *((BYTE*)(ptr)+3)=(BYTE)((DWORD)(val)>>24)
 331 #endif
 332
 333 #ifdef __cplusplus
 334 }
 335 #endif
 336
 337 #endif /* _FATFS */