Blame view

src/lufa-LUFA-170418/Projects/Webserver/Lib/FATFs/ff.h 11.8 KB
ca85a266   gperson   le vrai commit, c...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
  /*---------------------------------------------------------------------------/
  /  FatFs - FAT file system module include file  R0.09a    (C)ChaN, 2012
  /----------------------------------------------------------------------------/
  / FatFs module is a generic FAT file system module for small embedded systems.
  / This is a free software that opened for education, research and commercial
  / developments under license policy of following terms.
  /
  /  Copyright (C) 2012, ChaN, all right reserved.
  /
  / * The FatFs module is a free software and there is NO WARRANTY.
  / * No restriction on use. You can use, modify and redistribute it for
  /   personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
  / * Redistributions of source code must retain the above copyright notice.
  /
  /----------------------------------------------------------------------------*/
  
  #ifndef _FATFS
  #define _FATFS	4004	/* Revision ID */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include "integer.h"	/* Basic integer types */
  #include "ffconf.h"		/* FatFs configuration options */
  
  #if _FATFS != _FFCONF
  #error Wrong configuration file (ffconf.h).
  #endif
  
  
  
  /* Definitions of volume management */
  
  #if _MULTI_PARTITION		/* Multiple partition configuration */
  typedef struct {
  	BYTE pd;	/* Physical drive number */
  	BYTE pt;	/* Partition: 0:Auto detect, 1-4:Forced partition) */
  } PARTITION;
  extern PARTITION VolToPart[];	/* Volume - Partition resolution table */
  #define LD2PD(vol) (VolToPart[vol].pd)	/* Get physical drive number */
  #define LD2PT(vol) (VolToPart[vol].pt)	/* Get partition index */
  
  #else							/* Single partition configuration */
  #define LD2PD(vol) (BYTE)(vol)	/* Each logical drive is bound to the same physical drive number */
  #define LD2PT(vol) 0			/* Always mounts the 1st partition or in SFD */
  
  #endif
  
  
  
  /* Type of path name strings on FatFs API */
  
  #if _LFN_UNICODE			/* Unicode string */
  #if !_USE_LFN
  #error _LFN_UNICODE must be 0 in non-LFN cfg.
  #endif
  #ifndef _INC_TCHAR
  typedef WCHAR TCHAR;
  #define _T(x) L ## x
  #define _TEXT(x) L ## x
  #endif
  
  #else						/* ANSI/OEM string */
  #ifndef _INC_TCHAR
  typedef char TCHAR;
  #define _T(x) x
  #define _TEXT(x) x
  #endif
  
  #endif
  
  
  
  /* File system object structure (FATFS) */
  
  typedef struct {
  	BYTE	fs_type;		/* FAT sub-type (0:Not mounted) */
  	BYTE	drv;			/* Physical drive number */
  	BYTE	csize;			/* Sectors per cluster (1,2,4...128) */
  	BYTE	n_fats;			/* Number of FAT copies (1,2) */
  	BYTE	wflag;			/* win[] dirty flag (1:must be written back) */
  	BYTE	fsi_flag;		/* fsinfo dirty flag (1:must be written back) */
  	WORD	id;				/* File system mount ID */
  	WORD	n_rootdir;		/* Number of root directory entries (FAT12/16) */
  #if _MAX_SS != 512
  	WORD	ssize;			/* Bytes per sector (512, 1024, 2048 or 4096) */
  #endif
  #if _FS_REENTRANT
  	_SYNC_t	sobj;			/* Identifier of sync object */
  #endif
  #if !_FS_READONLY
  	DWORD	last_clust;		/* Last allocated cluster */
  	DWORD	free_clust;		/* Number of free clusters */
  	DWORD	fsi_sector;		/* fsinfo sector (FAT32) */
  #endif
  #if _FS_RPATH
  	DWORD	cdir;			/* Current directory start cluster (0:root) */
  #endif
  	DWORD	n_fatent;		/* Number of FAT entries (= number of clusters + 2) */
  	DWORD	fsize;			/* Sectors per FAT */
  	DWORD	fatbase;		/* FAT start sector */
  	DWORD	dirbase;		/* Root directory start sector (FAT32:Cluster#) */
  	DWORD	database;		/* Data start sector */
  	DWORD	winsect;		/* Current sector appearing in the win[] */
  	BYTE	win[_MAX_SS];	/* Disk access window for Directory, FAT (and Data on tiny cfg) */
  } FATFS;
  
  
  
  /* File object structure (FIL) */
  
  typedef struct {
  	FATFS*	fs;				/* Pointer to the related file system object */
  	WORD	id;				/* File system mount ID of the related file system object */
  	BYTE	flag;			/* File status flags */
  	BYTE	pad1;
  	DWORD	fptr;			/* File read/write pointer (0ed on file open) */
  	DWORD	fsize;			/* File size */
  	DWORD	sclust;			/* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
  	DWORD	clust;			/* Current cluster of fpter */
  	DWORD	dsect;			/* Current data sector of fpter */
  #if !_FS_READONLY
  	DWORD	dir_sect;		/* Sector containing the directory entry */
  	BYTE*	dir_ptr;		/* Pointer to the directory entry in the window */
  #endif
  #if _USE_FASTSEEK
  	DWORD*	cltbl;			/* Pointer to the cluster link map table (null on file open) */
  #endif
  #if _FS_LOCK
  	UINT	lockid;			/* File lock ID (index of file semaphore table Files[]) */
  #endif
  #if !_FS_TINY
  	BYTE	buf[_MAX_SS];	/* File data read/write buffer */
  #endif
  } FIL;
  
  
  
  /* Directory object structure (DIR) */
  
  typedef struct {
  	FATFS*	fs;				/* Pointer to the owner file system object */
  	WORD	id;				/* Owner file system mount ID */
  	WORD	index;			/* Current read/write index number */
  	DWORD	sclust;			/* Table start cluster (0:Root dir) */
  	DWORD	clust;			/* Current cluster */
  	DWORD	sect;			/* Current sector */
  	BYTE*	dir;			/* Pointer to the current SFN entry in the win[] */
  	BYTE*	fn;				/* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
  #if _USE_LFN
  	WCHAR*	lfn;			/* Pointer to the LFN working buffer */
  	WORD	lfn_idx;		/* Last matched LFN index number (0xFFFF:No LFN) */
  #endif
  } DIR;
  
  
  
  /* File status structure (FILINFO) */
  
  typedef struct {
  	DWORD	fsize;			/* File size */
  	WORD	fdate;			/* Last modified date */
  	WORD	ftime;			/* Last modified time */
  	BYTE	fattrib;		/* Attribute */
  	TCHAR	fname[13];		/* Short file name (8.3 format) */
  #if _USE_LFN
  	TCHAR*	lfname;			/* Pointer to the LFN buffer */
  	UINT 	lfsize;			/* Size of LFN buffer in TCHAR */
  #endif
  } FILINFO;
  
  
  
  /* File function return code (FRESULT) */
  
  typedef enum {
  	FR_OK = 0,				/* (0) Succeeded */
  	FR_DISK_ERR,			/* (1) A hard error occurred in the low level disk I/O layer */
  	FR_INT_ERR,				/* (2) Assertion failed */
  	FR_NOT_READY,			/* (3) The physical drive cannot work */
  	FR_NO_FILE,				/* (4) Could not find the file */
  	FR_NO_PATH,				/* (5) Could not find the path */
  	FR_INVALID_NAME,		/* (6) The path name format is invalid */
  	FR_DENIED,				/* (7) Access denied due to prohibited access or directory full */
  	FR_EXIST,				/* (8) Access denied due to prohibited access */
  	FR_INVALID_OBJECT,		/* (9) The file/directory object is invalid */
  	FR_WRITE_PROTECTED,		/* (10) The physical drive is write protected */
  	FR_INVALID_DRIVE,		/* (11) The logical drive number is invalid */
  	FR_NOT_ENABLED,			/* (12) The volume has no work area */
  	FR_NO_FILESYSTEM,		/* (13) There is no valid FAT volume */
  	FR_MKFS_ABORTED,		/* (14) The f_mkfs() aborted due to any parameter error */
  	FR_TIMEOUT,				/* (15) Could not get a grant to access the volume within defined period */
  	FR_LOCKED,				/* (16) The operation is rejected according to the file sharing policy */
  	FR_NOT_ENOUGH_CORE,		/* (17) LFN working buffer could not be allocated */
  	FR_TOO_MANY_OPEN_FILES,	/* (18) Number of open files > _FS_SHARE */
  	FR_INVALID_PARAMETER	/* (19) Given parameter is invalid */
  } FRESULT;
  
  
  
  /*--------------------------------------------------------------*/
  /* FatFs module application interface                           */
  
  FRESULT f_mount (BYTE, FATFS*);						/* Mount/Unmount a logical drive */
  FRESULT f_open (FIL*, const TCHAR*, BYTE);			/* Open or create a file */
  FRESULT f_read (FIL*, void*, UINT, UINT*);			/* Read data from a file */
  FRESULT f_lseek (FIL*, DWORD);						/* Move file pointer of a file object */
  FRESULT f_close (FIL*);								/* Close an open file object */
  FRESULT f_opendir (DIR*, const TCHAR*);				/* Open an existing directory */
  FRESULT f_readdir (DIR*, FILINFO*);					/* Read a directory item */
  FRESULT f_stat (const TCHAR*, FILINFO*);			/* Get file status */
  FRESULT f_write (FIL*, const void*, UINT, UINT*);	/* Write data to a file */
  FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**);	/* Get number of free clusters on the drive */
  FRESULT f_truncate (FIL*);							/* Truncate file */
  FRESULT f_sync (FIL*);								/* Flush cached data of a writing file */
  FRESULT f_unlink (const TCHAR*);					/* Delete an existing file or directory */
  FRESULT	f_mkdir (const TCHAR*);						/* Create a new directory */
  FRESULT f_chmod (const TCHAR*, BYTE, BYTE);			/* Change attribute of the file/dir */
  FRESULT f_utime (const TCHAR*, const FILINFO*);		/* Change times-tamp of the file/dir */
  FRESULT f_rename (const TCHAR*, const TCHAR*);		/* Rename/Move a file or directory */
  FRESULT f_chdrive (BYTE);							/* Change current drive */
  FRESULT f_chdir (const TCHAR*);						/* Change current directory */
  FRESULT f_getcwd (TCHAR*, UINT);					/* Get current directory */
  FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*);	/* Forward data to the stream */
  FRESULT f_mkfs (BYTE, BYTE, UINT);					/* Create a file system on the drive */
  FRESULT	f_fdisk (BYTE, const DWORD[], void*);		/* Divide a physical drive into some partitions */
  int f_putc (TCHAR, FIL*);							/* Put a character to the file */
  int f_puts (const TCHAR*, FIL*);					/* Put a string to the file */
  int f_printf (FIL*, const TCHAR*, ...);				/* Put a formatted string to the file */
  TCHAR* f_gets (TCHAR*, int, FIL*);					/* Get a string from the file */
  
  #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
  #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
  #define f_tell(fp) ((fp)->fptr)
  #define f_size(fp) ((fp)->fsize)
  
  #ifndef EOF
  #define EOF (-1)
  #endif
  
  
  
  
  /*--------------------------------------------------------------*/
  /* Additional user defined functions                            */
  
  /* RTC function */
  #if !_FS_READONLY
  DWORD get_fattime (void);
  #endif
  
  /* Unicode support functions */
  #if _USE_LFN						/* Unicode - OEM code conversion */
  WCHAR ff_convert (WCHAR, UINT);		/* OEM-Unicode bidirectional conversion */
  WCHAR ff_wtoupper (WCHAR);			/* Unicode upper-case conversion */
  #if _USE_LFN == 3					/* Memory functions */
  void* ff_memalloc (UINT);			/* Allocate memory block */
  void ff_memfree (void*);			/* Free memory block */
  #endif
  #endif
  
  /* Sync functions */
  #if _FS_REENTRANT
  int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
  int ff_req_grant (_SYNC_t);			/* Lock sync object */
  void ff_rel_grant (_SYNC_t);		/* Unlock sync object */
  int ff_del_syncobj (_SYNC_t);		/* Delete a sync object */
  #endif
  
  
  
  
  /*--------------------------------------------------------------*/
  /* Flags and offset address                                     */
  
  
  /* File access control and file status flags (FIL.flag) */
  
  #define	FA_READ				0x01
  #define	FA_OPEN_EXISTING	0x00
  #define FA__ERROR			0x80
  
  #if !_FS_READONLY
  #define	FA_WRITE			0x02
  #define	FA_CREATE_NEW		0x04
  #define	FA_CREATE_ALWAYS	0x08
  #define	FA_OPEN_ALWAYS		0x10
  #define FA__WRITTEN			0x20
  #define FA__DIRTY			0x40
  #endif
  
  
  /* FAT sub type (FATFS.fs_type) */
  
  #define FS_FAT12	1
  #define FS_FAT16	2
  #define FS_FAT32	3
  
  
  /* File attribute bits for directory entry */
  
  #define	AM_RDO	0x01	/* Read only */
  #define	AM_HID	0x02	/* Hidden */
  #define	AM_SYS	0x04	/* System */
  #define	AM_VOL	0x08	/* Volume label */
  #define AM_LFN	0x0F	/* LFN entry */
  #define AM_DIR	0x10	/* Directory */
  #define AM_ARC	0x20	/* Archive */
  #define AM_MASK	0x3F	/* Mask of defined bits */
  
  
  /* Fast seek feature */
  #define CREATE_LINKMAP	0xFFFFFFFF
  
  
  
  /*--------------------------------*/
  /* Multi-byte word access macros  */
  
  #if _WORD_ACCESS == 1	/* Enable word access to the FAT structure */
  #define	LD_WORD(ptr)		(WORD)(*(WORD*)(BYTE*)(ptr))
  #define	LD_DWORD(ptr)		(DWORD)(*(DWORD*)(BYTE*)(ptr))
  #define	ST_WORD(ptr,val)	*(WORD*)(BYTE*)(ptr)=(WORD)(val)
  #define	ST_DWORD(ptr,val)	*(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
  #else					/* Use byte-by-byte access to the FAT structure */
  #define	LD_WORD(ptr)		(WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
  #define	LD_DWORD(ptr)		(DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
  #define	ST_WORD(ptr,val)	*(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
  #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)
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _FATFS */