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cloudbase.mooo.com Git - z180-stamp.git/blob - fatfs/src/ff.h
1 /*---------------------------------------------------------------------------/
2 / FatFs - FAT file system module include file R0.10b (C)ChaN, 2014
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.
8 / Copyright (C) 2014, ChaN, all right reserved.
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.
15 /----------------------------------------------------------------------------*/
18 #define _FATFS 8051 /* Revision ID */
24 #include "integer.h" /* Basic integer types */
25 #include "ffconf.h" /* FatFs configuration options */
28 #error Wrong configuration file (ffconf.h).
33 /* Definitions of volume management */
35 #if _MULTI_PARTITION /* Multiple partition configuration */
37 BYTE pd
; /* Physical drive number */
38 BYTE pt
; /* Partition: 0:Auto detect, 1-4:Forced 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 */
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 /* Find first valid partition or in SFD */
52 /* Type of path name strings on FatFs API */
54 #if _LFN_UNICODE /* Unicode string */
56 #error _LFN_UNICODE must be 0 at non-LFN cfg.
61 #define _TEXT(x) L ## x
64 #else /* ANSI/OEM string */
75 /* File system object structure (FATFS) */
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 or 2) */
82 BYTE wflag
; /* win[] flag (b0:dirty) */
83 BYTE fsi_flag
; /* FSINFO flags (b7:disabled, b0:dirty) */
84 WORD id
; /* File system mount ID */
85 WORD n_rootdir
; /* Number of root directory entries (FAT12/16) */
86 #if _MAX_SS != _MIN_SS
87 WORD ssize
; /* Bytes per sector (512, 1024, 2048 or 4096) */
90 _SYNC_t sobj
; /* Identifier of sync object */
93 DWORD last_clust
; /* Last allocated cluster */
94 DWORD free_clust
; /* Number of free clusters */
97 DWORD cdir
; /* Current directory start cluster (0:root) */
99 DWORD n_fatent
; /* Number of FAT entries, = number of clusters + 2 */
100 DWORD fsize
; /* Sectors per FAT */
101 DWORD volbase
; /* Volume start sector */
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 file data at tiny cfg) */
111 /* File object structure (FIL) */
114 FATFS
* fs
; /* Pointer to the related file system object (**do not change order**) */
115 WORD id
; /* Owner file system mount ID (**do not change order**) */
116 BYTE flag
; /* Status flags */
117 BYTE err
; /* Abort flag (error code) */
118 DWORD fptr
; /* File read/write pointer (Zeroed on file open) */
119 DWORD fsize
; /* File size */
120 DWORD sclust
; /* File start cluster (0:no cluster chain, always 0 when fsize is 0) */
121 DWORD clust
; /* Current cluster of fpter (not valid when fprt is 0) */
122 DWORD dsect
; /* Sector number appearing in buf[] (0:invalid) */
124 DWORD dir_sect
; /* Sector number containing the directory entry */
125 BYTE
* dir_ptr
; /* Pointer to the directory entry in the win[] */
128 DWORD
* cltbl
; /* Pointer to the cluster link map table (Nulled on file open) */
131 UINT lockid
; /* File lock ID origin from 1 (index of file semaphore table Files[]) */
134 BYTE buf
[_MAX_SS
]; /* File private data read/write window */
140 /* Directory object structure (DIR) */
143 FATFS
* fs
; /* Pointer to the owner file system object (**do not change order**) */
144 WORD id
; /* Owner file system mount ID (**do not change order**) */
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]} */
152 UINT lockid
; /* File lock ID (index of file semaphore table Files[]) */
155 WCHAR
* lfn
; /* Pointer to the LFN working buffer */
156 WORD lfn_idx
; /* Last matched LFN index number (0xFFFF:No LFN) */
162 /* File status structure (FILINFO) */
165 DWORD fsize
; /* File size */
166 WORD fdate
; /* Last modified date */
167 WORD ftime
; /* Last modified time */
168 BYTE fattrib
; /* Attribute */
169 TCHAR fname
[13]; /* Short file name (8.3 format) */
171 TCHAR
* lfname
; /* Pointer to the LFN buffer */
172 UINT lfsize
; /* Size of LFN buffer in TCHAR */
178 /* File function return code (FRESULT) */
181 FR_OK
= 0, /* (0) Succeeded */
182 FR_DISK_ERR
, /* (1) A hard error occurred in the low level disk I/O layer */
183 FR_INT_ERR
, /* (2) Assertion failed */
184 FR_NOT_READY
, /* (3) The physical drive cannot work */
185 FR_NO_FILE
, /* (4) Could not find the file */
186 FR_NO_PATH
, /* (5) Could not find the path */
187 FR_INVALID_NAME
, /* (6) The path name format is invalid */
188 FR_DENIED
, /* (7) Access denied due to prohibited access or directory full */
189 FR_EXIST
, /* (8) Access denied due to prohibited access */
190 FR_INVALID_OBJECT
, /* (9) The file/directory object is invalid */
191 FR_WRITE_PROTECTED
, /* (10) The physical drive is write protected */
192 FR_INVALID_DRIVE
, /* (11) The logical drive number is invalid */
193 FR_NOT_ENABLED
, /* (12) The volume has no work area */
194 FR_NO_FILESYSTEM
, /* (13) There is no valid FAT volume */
195 FR_MKFS_ABORTED
, /* (14) The f_mkfs() aborted due to any parameter error */
196 FR_TIMEOUT
, /* (15) Could not get a grant to access the volume within defined period */
197 FR_LOCKED
, /* (16) The operation is rejected according to the file sharing policy */
198 FR_NOT_ENOUGH_CORE
, /* (17) LFN working buffer could not be allocated */
199 FR_TOO_MANY_OPEN_FILES
, /* (18) Number of open files > _FS_SHARE */
200 FR_INVALID_PARAMETER
/* (19) Given parameter is invalid */
205 /*--------------------------------------------------------------*/
206 /* FatFs module application interface */
208 FRESULT
f_open (FIL
* fp
, const TCHAR
* path
, BYTE mode
); /* Open or create a file */
209 FRESULT
f_close (FIL
* fp
); /* Close an open file object */
210 FRESULT
f_read (FIL
* fp
, void* buff
, UINT btr
, UINT
* br
); /* Read data from a file */
211 FRESULT
f_write (FIL
* fp
, const void* buff
, UINT btw
, UINT
* bw
); /* Write data to a file */
212 FRESULT
f_forward (FIL
* fp
, UINT(*func
)(const BYTE
*,UINT
), UINT btf
, UINT
* bf
); /* Forward data to the stream */
213 FRESULT
f_lseek (FIL
* fp
, DWORD ofs
); /* Move file pointer of a file object */
214 FRESULT
f_truncate (FIL
* fp
); /* Truncate file */
215 FRESULT
f_sync (FIL
* fp
); /* Flush cached data of a writing file */
216 FRESULT
f_opendir (DIR* dp
, const TCHAR
* path
); /* Open a directory */
217 FRESULT
f_closedir (DIR* dp
); /* Close an open directory */
218 FRESULT
f_readdir (DIR* dp
, FILINFO
* fno
); /* Read a directory item */
219 FRESULT
f_mkdir (const TCHAR
* path
); /* Create a sub directory */
220 FRESULT
f_unlink (const TCHAR
* path
); /* Delete an existing file or directory */
221 FRESULT
f_rename (const TCHAR
* path_old
, const TCHAR
* path_new
); /* Rename/Move a file or directory */
222 FRESULT
f_stat (const TCHAR
* path
, FILINFO
* fno
); /* Get file status */
223 FRESULT
f_chmod (const TCHAR
* path
, BYTE value
, BYTE mask
); /* Change attribute of the file/dir */
224 FRESULT
f_utime (const TCHAR
* path
, const FILINFO
* fno
); /* Change times-tamp of the file/dir */
225 FRESULT
f_chdir (const TCHAR
* path
); /* Change current directory */
226 FRESULT
f_chdrive (const TCHAR
* path
); /* Change current drive */
227 FRESULT
f_getcwd (TCHAR
* buff
, UINT len
); /* Get current directory */
228 FRESULT
f_getfree (const TCHAR
* path
, DWORD
* nclst
, FATFS
** fatfs
); /* Get number of free clusters on the drive */
229 FRESULT
f_getlabel (const TCHAR
* path
, TCHAR
* label
, DWORD
* vsn
); /* Get volume label */
230 FRESULT
f_setlabel (const TCHAR
* label
); /* Set volume label */
231 FRESULT
f_mount (FATFS
* fs
, const TCHAR
* path
, BYTE opt
); /* Mount/Unmount a logical drive */
232 FRESULT
f_mkfs (const TCHAR
* path
, BYTE sfd
, UINT au
); /* Create a file system on the volume */
233 FRESULT
f_fdisk (BYTE pdrv
, const DWORD szt
[], void* work
); /* Divide a physical drive into some partitions */
234 int f_putc (TCHAR c
, FIL
* fp
); /* Put a character to the file */
235 int f_puts (const TCHAR
* str
, FIL
* cp
); /* Put a string to the file */
236 int f_printf (FIL
* fp
, const TCHAR
* str
, ...); /* Put a formatted string to the file */
237 TCHAR
* f_gets (TCHAR
* buff
, int len
, FIL
* fp
); /* Get a string from the file */
239 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
240 #define f_error(fp) ((fp)->err)
241 #define f_tell(fp) ((fp)->fptr)
242 #define f_size(fp) ((fp)->fsize)
251 /*--------------------------------------------------------------*/
252 /* Additional user defined functions */
256 DWORD
get_fattime (void);
259 /* Unicode support functions */
260 #if _USE_LFN /* Unicode - OEM code conversion */
261 WCHAR
ff_convert (WCHAR chr
, UINT dir
); /* OEM-Unicode bidirectional conversion */
262 WCHAR
ff_wtoupper (WCHAR chr
); /* Unicode upper-case conversion */
263 #if _USE_LFN == 3 /* Memory functions */
264 void* ff_memalloc (UINT msize
); /* Allocate memory block */
265 void ff_memfree (void* mblock
); /* Free memory block */
271 int ff_cre_syncobj (BYTE vol
, _SYNC_t
* sobj
); /* Create a sync object */
272 int ff_req_grant (_SYNC_t sobj
); /* Lock sync object */
273 void ff_rel_grant (_SYNC_t sobj
); /* Unlock sync object */
274 int ff_del_syncobj (_SYNC_t sobj
); /* Delete a sync object */
280 /*--------------------------------------------------------------*/
281 /* Flags and offset address */
284 /* File access control and file status flags (FIL.flag) */
287 #define FA_OPEN_EXISTING 0x00
290 #define FA_WRITE 0x02
291 #define FA_CREATE_NEW 0x04
292 #define FA_CREATE_ALWAYS 0x08
293 #define FA_OPEN_ALWAYS 0x10
294 #define FA__WRITTEN 0x20
295 #define FA__DIRTY 0x40
299 /* FAT sub type (FATFS.fs_type) */
306 /* File attribute bits for directory entry */
308 #define AM_RDO 0x01 /* Read only */
309 #define AM_HID 0x02 /* Hidden */
310 #define AM_SYS 0x04 /* System */
311 #define AM_VOL 0x08 /* Volume label */
312 #define AM_LFN 0x0F /* LFN entry */
313 #define AM_DIR 0x10 /* Directory */
314 #define AM_ARC 0x20 /* Archive */
315 #define AM_MASK 0x3F /* Mask of defined bits */
318 /* Fast seek feature */
319 #define CREATE_LINKMAP 0xFFFFFFFF
323 /*--------------------------------*/
324 /* Multi-byte word access macros */
326 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
327 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
328 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
329 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
330 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
331 #else /* Use byte-by-byte access to the FAT structure */
332 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
333 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
334 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
335 #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)