HP85 GPIB Disk Emulator  1.0
HP85GPIBDiskEmulator
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ff.c
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1 /*----------------------------------------------------------------------------/
2 / FatFs - Generic FAT Filesystem Module R0.14 /
3 /-----------------------------------------------------------------------------/
4 /
5 / Copyright (C) 2019, ChaN, all right reserved.
6 /
7 / FatFs module is an open source software. Redistribution and use of FatFs in
8 / source and binary forms, with or without modification, are permitted provided
9 / that the following condition is met:
10 /
11 / 1. Redistributions of source code must retain the above copyright notice,
12 / this condition and the following disclaimer.
13 /
14 / This software is provided by the copyright holder and contributors "AS IS"
15 / and any warranties related to this software are DISCLAIMED.
16 / The copyright owner or contributors be NOT LIABLE for any damages caused
17 / by use of this software.
18 /
19 /----------------------------------------------------------------------------*/
20 
21 #include "user_config.h"
22 #include "fatfs.h"
23 #ifdef AVR
24 #include <stdlib.h>
25 #endif
26 
27 #include "ff.h" /* Declarations of FatFs API */
28 #include "diskio.h" /* Declarations of device I/O functions */
29 
30 
31 /*--------------------------------------------------------------------------
32 
33  Module Private Definitions
34 
35 ---------------------------------------------------------------------------*/
36 
37 #if FF_DEFINED != 86606 /* Revision ID */
38 #error Wrong include file (ff.h).
39 #endif
40 
41 
42 /* Limits and boundaries */
43 #define MAX_DIR 0x200000 /* Max size of FAT directory */
44 #define MAX_DIR_EX 0x10000000 /* Max size of exFAT directory */
45 #define MAX_FAT12 0xFF5 /* Max FAT12 clusters (differs from specs, but right for real DOS/Windows behavior) */
46 #define MAX_FAT16 0xFFF5 /* Max FAT16 clusters (differs from specs, but right for real DOS/Windows behavior) */
47 #define MAX_FAT32 0x0FFFFFF5 /* Max FAT32 clusters (not specified, practical limit) */
48 #define MAX_EXFAT 0x7FFFFFFD /* Max exFAT clusters (differs from specs, implementation limit) */
49 
50 
51 /* Character code support macros */
52 #define IsUpper(c) ((c) >= 'A' && (c) <= 'Z')
53 #define IsLower(c) ((c) >= 'a' && (c) <= 'z')
54 #define IsDigit(c) ((c) >= '0' && (c) <= '9')
55 #define IsSurrogate(c) ((c) >= 0xD800 && (c) <= 0xDFFF)
56 #define IsSurrogateH(c) ((c) >= 0xD800 && (c) <= 0xDBFF)
57 #define IsSurrogateL(c) ((c) >= 0xDC00 && (c) <= 0xDFFF)
58 
59 
60 /* Additional file access control and file status flags for internal use */
61 #define FA_SEEKEND 0x20 /* Seek to end of the file on file open */
62 #define FA_MODIFIED 0x40 /* File has been modified */
63 #define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */
64 
65 
66 /* Additional file attribute bits for internal use */
67 #define AM_VOL 0x08 /* Volume label */
68 #define AM_LFN 0x0F /* LFN entry */
69 #define AM_MASK 0x3F /* Mask of defined bits */
70 
71 
72 /* Name status flags in fn[11] */
73 #define NSFLAG 11 /* Index of the name status byte */
74 #define NS_LOSS 0x01 /* Out of 8.3 format */
75 #define NS_LFN 0x02 /* Force to create LFN entry */
76 #define NS_LAST 0x04 /* Last segment */
77 #define NS_BODY 0x08 /* Lower case flag (body) */
78 #define NS_EXT 0x10 /* Lower case flag (ext) */
79 #define NS_DOT 0x20 /* Dot entry */
80 #define NS_NOLFN 0x40 /* Do not find LFN */
81 #define NS_NONAME 0x80 /* Not followed */
82 
83 
84 /* exFAT directory entry types */
85 #define ET_BITMAP 0x81 /* Allocation bitmap */
86 #define ET_UPCASE 0x82 /* Up-case table */
87 #define ET_VLABEL 0x83 /* Volume label */
88 #define ET_FILEDIR 0x85 /* File and directory */
89 #define ET_STREAM 0xC0 /* Stream extension */
90 #define ET_FILENAME 0xC1 /* Name extension */
91 
92 
93 /* FatFs refers the FAT structure as simple byte array instead of structure member
94 / because the C structure is not binary compatible between different platforms */
95 
96 #define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */
97 #define BS_OEMName 3 /* OEM name (8-byte) */
98 #define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */
99 #define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */
100 #define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */
101 #define BPB_NumFATs 16 /* Number of FATs (BYTE) */
102 #define BPB_RootEntCnt 17 /* Size of root directory area for FAT [entry] (WORD) */
103 #define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */
104 #define BPB_Media 21 /* Media descriptor byte (BYTE) */
105 #define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */
106 #define BPB_SecPerTrk 24 /* Number of sectors per track for int13h [sector] (WORD) */
107 #define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */
108 #define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */
109 #define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */
110 #define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */
111 #define BS_NTres 37 /* WindowsNT error flag (BYTE) */
112 #define BS_BootSig 38 /* Extended boot signature (BYTE) */
113 #define BS_VolID 39 /* Volume serial number (DWORD) */
114 #define BS_VolLab 43 /* Volume label string (8-byte) */
115 #define BS_FilSysType 54 /* Filesystem type string (8-byte) */
116 #define BS_BootCode 62 /* Boot code (448-byte) */
117 #define BS_55AA 510 /* Signature word (WORD) */
118 
119 #define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */
120 #define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */
121 #define BPB_FSVer32 42 /* FAT32: Filesystem version (WORD) */
122 #define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */
123 #define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */
124 #define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */
125 #define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */
126 #define BS_NTres32 65 /* FAT32: Error flag (BYTE) */
127 #define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */
128 #define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */
129 #define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */
130 #define BS_FilSysType32 82 /* FAT32: Filesystem type string (8-byte) */
131 #define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */
132 
133 #define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */
134 #define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */
135 #define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */
136 #define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */
137 #define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */
138 #define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */
139 #define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */
140 #define BPB_RootClusEx 96 /* exFAT: Root directory start cluster (DWORD) */
141 #define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */
142 #define BPB_FSVerEx 104 /* exFAT: Filesystem version (WORD) */
143 #define BPB_VolFlagEx 106 /* exFAT: Volume flags (WORD) */
144 #define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in unit of byte (BYTE) */
145 #define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in unit of sector (BYTE) */
146 #define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */
147 #define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */
148 #define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */
149 #define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */
150 #define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */
151 
152 #define DIR_Name 0 /* Short file name (11-byte) */
153 #define DIR_Attr 11 /* Attribute (BYTE) */
154 #define DIR_NTres 12 /* Lower case flag (BYTE) */
155 #define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */
156 #define DIR_CrtTime 14 /* Created time (DWORD) */
157 #define DIR_LstAccDate 18 /* Last accessed date (WORD) */
158 #define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */
159 #define DIR_ModTime 22 /* Modified time (DWORD) */
160 #define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */
161 #define DIR_FileSize 28 /* File size (DWORD) */
162 #define LDIR_Ord 0 /* LFN: LFN order and LLE flag (BYTE) */
163 #define LDIR_Attr 11 /* LFN: LFN attribute (BYTE) */
164 #define LDIR_Type 12 /* LFN: Entry type (BYTE) */
165 #define LDIR_Chksum 13 /* LFN: Checksum of the SFN (BYTE) */
166 #define LDIR_FstClusLO 26 /* LFN: MBZ field (WORD) */
167 #define XDIR_Type 0 /* exFAT: Type of exFAT directory entry (BYTE) */
168 #define XDIR_NumLabel 1 /* exFAT: Number of volume label characters (BYTE) */
169 #define XDIR_Label 2 /* exFAT: Volume label (11-WORD) */
170 #define XDIR_CaseSum 4 /* exFAT: Sum of case conversion table (DWORD) */
171 #define XDIR_NumSec 1 /* exFAT: Number of secondary entries (BYTE) */
172 #define XDIR_SetSum 2 /* exFAT: Sum of the set of directory entries (WORD) */
173 #define XDIR_Attr 4 /* exFAT: File attribute (WORD) */
174 #define XDIR_CrtTime 8 /* exFAT: Created time (DWORD) */
175 #define XDIR_ModTime 12 /* exFAT: Modified time (DWORD) */
176 #define XDIR_AccTime 16 /* exFAT: Last accessed time (DWORD) */
177 #define XDIR_CrtTime10 20 /* exFAT: Created time subsecond (BYTE) */
178 #define XDIR_ModTime10 21 /* exFAT: Modified time subsecond (BYTE) */
179 #define XDIR_CrtTZ 22 /* exFAT: Created timezone (BYTE) */
180 #define XDIR_ModTZ 23 /* exFAT: Modified timezone (BYTE) */
181 #define XDIR_AccTZ 24 /* exFAT: Last accessed timezone (BYTE) */
182 #define XDIR_GenFlags 33 /* exFAT: General secondary flags (BYTE) */
183 #define XDIR_NumName 35 /* exFAT: Number of file name characters (BYTE) */
184 #define XDIR_NameHash 36 /* exFAT: Hash of file name (WORD) */
185 #define XDIR_ValidFileSize 40 /* exFAT: Valid file size (QWORD) */
186 #define XDIR_FstClus 52 /* exFAT: First cluster of the file data (DWORD) */
187 #define XDIR_FileSize 56 /* exFAT: File/Directory size (QWORD) */
188 
189 #define SZDIRE 32 /* Size of a directory entry */
190 #define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */
191 #define RDDEM 0x05 /* Replacement of the character collides with DDEM */
192 #define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
193 
194 #define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */
195 #define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */
196 #define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */
197 #define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */
198 
199 #define MBR_Table 446 /* MBR: Offset of partition table in the MBR */
200 #define SZ_PTE 16 /* MBR: Size of a partition table entry */
201 #define PTE_Boot 0 /* MBR PTE: Boot indicator */
202 #define PTE_StHead 1 /* MBR PTE: Start head */
203 #define PTE_StSec 2 /* MBR PTE: Start sector */
204 #define PTE_StCyl 3 /* MBR PTE: Start cylinder */
205 #define PTE_System 4 /* MBR PTE: System ID */
206 #define PTE_EdHead 5 /* MBR PTE: End head */
207 #define PTE_EdSec 6 /* MBR PTE: End sector */
208 #define PTE_EdCyl 7 /* MBR PTE: End cylinder */
209 #define PTE_StLba 8 /* MBR PTE: Start in LBA */
210 #define PTE_SizLba 12 /* MBR PTE: Size in LBA */
211 
212 #define GPTH_Sign 0 /* GPT: Header signature (8-byte) */
213 #define GPTH_Rev 8 /* GPT: Revision (DWORD) */
214 #define GPTH_Size 12 /* GPT: Header size (DWORD) */
215 #define GPTH_Bcc 16 /* GPT: Header BCC (DWORD) */
216 #define GPTH_CurLba 24 /* GPT: Main header LBA (QWORD) */
217 #define GPTH_BakLba 32 /* GPT: Backup header LBA (QWORD) */
218 #define GPTH_FstLba 40 /* GPT: First LBA for partitions (QWORD) */
219 #define GPTH_LstLba 48 /* GPT: Last LBA for partitions (QWORD) */
220 #define GPTH_DskGuid 56 /* GPT: Disk GUID (16-byte) */
221 #define GPTH_PtOfs 72 /* GPT: Partation table LBA (QWORD) */
222 #define GPTH_PtNum 80 /* GPT: Number of table entries (DWORD) */
223 #define GPTH_PteSize 84 /* GPT: Size of table entry (DWORD) */
224 #define GPTH_PtBcc 88 /* GPT: Partation table BCC (DWORD) */
225 #define SZ_GPTE 128 /* GPT: Size of partition table entry */
226 #define GPTE_PtGuid 0 /* GPT PTE: Partition type GUID (16-byte) */
227 #define GPTE_UpGuid 16 /* GPT PTE: Partition unique GUID (16-byte) */
228 #define GPTE_FstLba 32 /* GPT PTE: First LBA (QWORD) */
229 #define GPTE_LstLba 40 /* GPT PTE: Last LBA inclusive (QWORD) */
230 #define GPTE_Flags 48 /* GPT PTE: Flags (QWORD) */
231 #define GPTE_Name 56 /* GPT PTE: Name */
232 
233 
234 /* Post process on fatal error in the file operations */
235 #define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
236 
237 
238 /* Re-entrancy related */
239 #if FF_FS_REENTRANT
240 #if FF_USE_LFN == 1
241 #error Static LFN work area cannot be used at thread-safe configuration
242 #endif
243 #define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
244 #else
245 #define LEAVE_FF(fs, res) return res
246 #endif
247 
248 
249 /* Definitions of logical drive - physical location conversion */
250 #if FF_MULTI_PARTITION
251 #define LD2PD(vol) VolToPart[vol].pd /* Get physical drive number */
252 #define LD2PT(vol) VolToPart[vol].pt /* Get partition index */
253 #else
254 #define LD2PD(vol) (BYTE)(vol) /* Each logical drive is associated with the same physical drive number */
255 #define LD2PT(vol) 0 /* Find first valid partition or in SFD */
256 #endif
257 
258 
259 /* Definitions of sector size */
260 #if (FF_MAX_SS < FF_MIN_SS) || (FF_MAX_SS != 512 && FF_MAX_SS != 1024 && FF_MAX_SS != 2048 && FF_MAX_SS != 4096) || (FF_MIN_SS != 512 && FF_MIN_SS != 1024 && FF_MIN_SS != 2048 && FF_MIN_SS != 4096)
261 #error Wrong sector size configuration
262 #endif
263 #if FF_MAX_SS == FF_MIN_SS
264 #define SS(fs) ((UINT)FF_MAX_SS) /* Fixed sector size */
265 #else
266 #define SS(fs) ((fs)->ssize) /* Variable sector size */
267 #endif
268 
269 
270 /* Timestamp */
271 #if FF_FS_NORTC == 1
272 #if FF_NORTC_YEAR < 1980 || FF_NORTC_YEAR > 2107 || FF_NORTC_MON < 1 || FF_NORTC_MON > 12 || FF_NORTC_MDAY < 1 || FF_NORTC_MDAY > 31
273 #error Invalid FF_FS_NORTC settings
274 #endif
275 #define GET_FATTIME() ((DWORD)(FF_NORTC_YEAR - 1980) << 25 | (DWORD)FF_NORTC_MON << 21 | (DWORD)FF_NORTC_MDAY << 16)
276 #else
277 #define GET_FATTIME() get_fattime()
278 #endif
279 
280 
281 /* File lock controls */
282 #if FF_FS_LOCK != 0
283 #if FF_FS_READONLY
284 #error FF_FS_LOCK must be 0 at read-only configuration
285 #endif
286 typedef struct {
287  FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */
288  DWORD clu; /* Object ID 2, containing directory (0:root) */
289  DWORD ofs; /* Object ID 3, offset in the directory */
290  WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
291 } FILESEM;
292 #endif
293 
294 
295 /* SBCS up-case tables (\x80-\xFF) */
296 #define TBL_CT437 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
297  0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
298  0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
299  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
300  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
301  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
302  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
303  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
304 #define TBL_CT720 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
305  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
306  0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
307  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
308  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
309  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
310  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
311  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
312 #define TBL_CT737 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
313  0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
314  0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
315  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
316  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
317  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
318  0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
319  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
320 #define TBL_CT771 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
321  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
322  0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
323  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
324  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
325  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
326  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
327  0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
328 #define TBL_CT775 {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
329  0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
330  0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
331  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
332  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
333  0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
334  0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
335  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
336 #define TBL_CT850 {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
337  0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
338  0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
339  0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
340  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
341  0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
342  0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
343  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
344 #define TBL_CT852 {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
345  0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
346  0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
347  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
348  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
349  0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
350  0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
351  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
352 #define TBL_CT855 {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
353  0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
354  0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
355  0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
356  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
357  0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
358  0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
359  0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
360 #define TBL_CT857 {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
361  0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
362  0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
363  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
364  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
365  0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
366  0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
367  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
368 #define TBL_CT860 {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
369  0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
370  0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
371  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
372  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
373  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
374  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
375  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
376 #define TBL_CT861 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
377  0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
378  0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
379  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
380  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
381  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
382  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
383  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
384 #define TBL_CT862 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
385  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
386  0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
387  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
388  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
389  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
390  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
391  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
392 #define TBL_CT863 {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
393  0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
394  0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
395  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
396  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
397  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
398  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
399  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
400 #define TBL_CT864 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
401  0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
402  0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
403  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
404  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
405  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
406  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
407  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
408 #define TBL_CT865 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
409  0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
410  0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
411  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
412  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
413  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
414  0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
415  0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
416 #define TBL_CT866 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
417  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
418  0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
419  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
420  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
421  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
422  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
423  0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
424 #define TBL_CT869 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
425  0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
426  0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
427  0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
428  0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
429  0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
430  0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
431  0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
432 
433 
434 /* DBCS code range |----- 1st byte -----| |----------- 2nd byte -----------| */
435 /* <------> <------> <------> <------> <------> */
436 #define TBL_DC932 {0x81, 0x9F, 0xE0, 0xFC, 0x40, 0x7E, 0x80, 0xFC, 0x00, 0x00}
437 #define TBL_DC936 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0x80, 0xFE, 0x00, 0x00}
438 #define TBL_DC949 {0x81, 0xFE, 0x00, 0x00, 0x41, 0x5A, 0x61, 0x7A, 0x81, 0xFE}
439 #define TBL_DC950 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0xA1, 0xFE, 0x00, 0x00}
440 
441 
442 /* Macros for table definitions */
443 #define MERGE_2STR(a, b) a ## b
444 #define MKCVTBL(hd, cp) MERGE_2STR(hd, cp)
445 
446 
447 
448 
449 /*--------------------------------------------------------------------------
450 
451  Module Private Work Area
452 
453 ---------------------------------------------------------------------------*/
454 /* Remark: Variables defined here without initial value shall be guaranteed
455 / zero/null at start-up. If not, the linker option or start-up routine is
456 / not compliance with C standard. */
457 
458 /*--------------------------------*/
459 /* File/Volume controls */
460 /*--------------------------------*/
461 
462 #if FF_VOLUMES < 1 || FF_VOLUMES > 10
463 #error Wrong FF_VOLUMES setting
464 #endif
465 static FATFS* FatFs[FF_VOLUMES]; /* Pointer to the filesystem objects (logical drives) */
466 static WORD Fsid; /* Filesystem mount ID */
467 
468 #if FF_FS_RPATH != 0
469 static BYTE CurrVol; /* Current drive */
470 #endif
471 
472 #if FF_FS_LOCK != 0
473 static FILESEM Files[FF_FS_LOCK]; /* Open object lock semaphores */
474 #endif
475 
476 #if FF_STR_VOLUME_ID
477 #ifdef FF_VOLUME_STRS
478 static const char* const VolumeStr[FF_VOLUMES] = {FF_VOLUME_STRS}; /* Pre-defined volume ID */
479 #endif
480 #endif
481 
482 #if FF_LBA64
483 #if FF_MIN_GPT > 0x100000000
484 #error Wrong FF_MIN_GPT setting
485 #endif
486 static const BYTE GUID_MS_Basic[16] = {0xA2,0xA0,0xD0,0xEB,0xE5,0xB9,0x33,0x44,0x87,0xC0,0x68,0xB6,0xB7,0x26,0x99,0xC7};
487 #endif
488 
489 
490 
491 /*--------------------------------*/
492 /* LFN/Directory working buffer */
493 /*--------------------------------*/
494 
495 #if FF_USE_LFN == 0 /* Non-LFN configuration */
496 #if FF_FS_EXFAT
497 #error LFN must be enabled when enable exFAT
498 #endif
499 #define DEF_NAMBUF
500 #define INIT_NAMBUF(fs)
501 #define FREE_NAMBUF()
502 #define LEAVE_MKFS(res) return res
503 
504 #else /* LFN configurations */
505 #if FF_MAX_LFN < 12 || FF_MAX_LFN > 255
506 #error Wrong setting of FF_MAX_LFN
507 #endif
508 #if FF_LFN_BUF < FF_SFN_BUF || FF_SFN_BUF < 12
509 #error Wrong setting of FF_LFN_BUF or FF_SFN_BUF
510 #endif
511 #if FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 3
512 #error Wrong setting of FF_LFN_UNICODE
513 #endif
514 static const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* FAT: Offset of LFN characters in the directory entry */
515 #define MAXDIRB(nc) ((nc + 44U) / 15 * SZDIRE) /* exFAT: Size of directory entry block scratchpad buffer needed for the name length */
516 
517 #if FF_USE_LFN == 1 /* LFN enabled with static working buffer */
518 #if FF_FS_EXFAT
519 static BYTE DirBuf[MAXDIRB(FF_MAX_LFN)]; /* Directory entry block scratchpad buffer */
520 #endif
521 static WCHAR LfnBuf[FF_MAX_LFN + 1]; /* LFN working buffer */
522 #define DEF_NAMBUF
523 #define INIT_NAMBUF(fs)
524 #define FREE_NAMBUF()
525 #define LEAVE_MKFS(res) return res
526 
527 #elif FF_USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */
528 #if FF_FS_EXFAT
529 #define DEF_NAMBUF WCHAR lbuf[FF_MAX_LFN+1]; BYTE dbuf[MAXDIRB(FF_MAX_LFN)]; /* LFN working buffer and directory entry block scratchpad buffer */
530 #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }
531 #define FREE_NAMBUF()
532 #else
533 #define DEF_NAMBUF WCHAR lbuf[FF_MAX_LFN+1]; /* LFN working buffer */
534 #define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; }
535 #define FREE_NAMBUF()
536 #endif
537 #define LEAVE_MKFS(res) return res
538 
539 #elif FF_USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */
540 #if FF_FS_EXFAT
541 #define DEF_NAMBUF WCHAR *lfn; /* Pointer to LFN working buffer and directory entry block scratchpad buffer */
542 #define INIT_NAMBUF(fs) { lfn = ff_memalloc((FF_MAX_LFN+1)*2 + MAXDIRB(FF_MAX_LFN)); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+FF_MAX_LFN+1); }
543 #define FREE_NAMBUF() ff_memfree(lfn)
544 #else
545 #define DEF_NAMBUF WCHAR *lfn; /* Pointer to LFN working buffer */
546 #define INIT_NAMBUF(fs) { lfn = ff_memalloc((FF_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }
547 #define FREE_NAMBUF() ff_memfree(lfn)
548 #endif
549 #define LEAVE_MKFS(res) { if (!work) ff_memfree(buf); return res; }
550 // MG #define MAX_MALLOC 0x8000 /* Must be >=FF_MAX_SS */
551 #define MAX_MALLOC (FF_MAX_SS*4) /* Must be >=FF_MAX_SS */
552 
553 #else
554 #error Wrong setting of FF_USE_LFN
555 
556 #endif /* FF_USE_LFN == 1 */
557 #endif /* FF_USE_LFN == 0 */
558 
559 
560 
561 /*--------------------------------*/
562 /* Code conversion tables */
563 /*--------------------------------*/
564 
565 #if FF_CODE_PAGE == 0 /* Run-time code page configuration */
566 #define CODEPAGE CodePage
567 static WORD CodePage; /* Current code page */
568 static const BYTE *ExCvt, *DbcTbl; /* Pointer to current SBCS up-case table and DBCS code range table below */
569 
570 static const BYTE Ct437[] = TBL_CT437;
571 static const BYTE Ct720[] = TBL_CT720;
572 static const BYTE Ct737[] = TBL_CT737;
573 static const BYTE Ct771[] = TBL_CT771;
574 static const BYTE Ct775[] = TBL_CT775;
575 static const BYTE Ct850[] = TBL_CT850;
576 static const BYTE Ct852[] = TBL_CT852;
577 static const BYTE Ct855[] = TBL_CT855;
578 static const BYTE Ct857[] = TBL_CT857;
579 static const BYTE Ct860[] = TBL_CT860;
580 static const BYTE Ct861[] = TBL_CT861;
581 static const BYTE Ct862[] = TBL_CT862;
582 static const BYTE Ct863[] = TBL_CT863;
583 static const BYTE Ct864[] = TBL_CT864;
584 static const BYTE Ct865[] = TBL_CT865;
585 static const BYTE Ct866[] = TBL_CT866;
586 static const BYTE Ct869[] = TBL_CT869;
587 static const BYTE Dc932[] = TBL_DC932;
588 static const BYTE Dc936[] = TBL_DC936;
589 static const BYTE Dc949[] = TBL_DC949;
590 static const BYTE Dc950[] = TBL_DC950;
591 
592 #elif FF_CODE_PAGE < 900 /* Static code page configuration (SBCS) */
593 #define CODEPAGE FF_CODE_PAGE
594 static const BYTE ExCvt[] = MKCVTBL(TBL_CT, FF_CODE_PAGE);
595 
596 #else /* Static code page configuration (DBCS) */
597 #define CODEPAGE FF_CODE_PAGE
598 static const BYTE DbcTbl[] = MKCVTBL(TBL_DC, FF_CODE_PAGE);
599 
600 #endif
601 
602 
603 
604 
605 /*--------------------------------------------------------------------------
606 
607  Module Private Functions
608 
609 ---------------------------------------------------------------------------*/
610 
611 
612 /*-----------------------------------------------------------------------*/
613 /* Load/Store multi-byte word in the FAT structure */
614 /*-----------------------------------------------------------------------*/
615 
616 static WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */
617 {
618  WORD rv;
619 
620  rv = ptr[1];
621  rv = rv << 8 | ptr[0];
622  return rv;
623 }
624 
625 static DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */
626 {
627  DWORD rv;
628 
629  rv = ptr[3];
630  rv = rv << 8 | ptr[2];
631  rv = rv << 8 | ptr[1];
632  rv = rv << 8 | ptr[0];
633  return rv;
634 }
635 
636 #if FF_FS_EXFAT
637 static QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */
638 {
639  QWORD rv;
640 
641  rv = ptr[7];
642  rv = rv << 8 | ptr[6];
643  rv = rv << 8 | ptr[5];
644  rv = rv << 8 | ptr[4];
645  rv = rv << 8 | ptr[3];
646  rv = rv << 8 | ptr[2];
647  rv = rv << 8 | ptr[1];
648  rv = rv << 8 | ptr[0];
649  return rv;
650 }
651 #endif
652 
653 #if !FF_FS_READONLY
654 static void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */
655 {
656  *ptr++ = (BYTE)val; val >>= 8;
657  *ptr++ = (BYTE)val;
658 }
659 
660 static void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */
661 {
662  *ptr++ = (BYTE)val; val >>= 8;
663  *ptr++ = (BYTE)val; val >>= 8;
664  *ptr++ = (BYTE)val; val >>= 8;
665  *ptr++ = (BYTE)val;
666 }
667 
668 #if FF_FS_EXFAT
669 static void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */
670 {
671  *ptr++ = (BYTE)val; val >>= 8;
672  *ptr++ = (BYTE)val; val >>= 8;
673  *ptr++ = (BYTE)val; val >>= 8;
674  *ptr++ = (BYTE)val; val >>= 8;
675  *ptr++ = (BYTE)val; val >>= 8;
676  *ptr++ = (BYTE)val; val >>= 8;
677  *ptr++ = (BYTE)val; val >>= 8;
678  *ptr++ = (BYTE)val;
679 }
680 #endif
681 #endif /* !FF_FS_READONLY */
682 
683 
684 
685 /*-----------------------------------------------------------------------*/
686 /* String functions */
687 /*-----------------------------------------------------------------------*/
688 
689 /* Copy memory to memory */
690 static void mem_cpy (void* dst, const void* src, UINT cnt)
691 {
692  BYTE *d = (BYTE*)dst;
693  const BYTE *s = (const BYTE*)src;
694 
695  if (cnt != 0) {
696  do {
697  *d++ = *s++;
698  } while (--cnt);
699  }
700 }
701 
702 
703 /* Fill memory block */
704 static void mem_set (void* dst, int val, UINT cnt)
705 {
706  BYTE *d = (BYTE*)dst;
707 
708  do {
709  *d++ = (BYTE)val;
710  } while (--cnt);
711 }
712 
713 
714 /* Compare memory block */
715 static int mem_cmp (const void* dst, const void* src, UINT cnt) /* ZR:same, NZ:different */
716 {
717  const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
718  int r = 0;
719 
720  do {
721  r = *d++ - *s++;
722  } while (--cnt && r == 0);
723 
724  return r;
725 }
726 
727 
728 /* Check if chr is contained in the string */
729 static int chk_chr (const char* str, int chr) /* NZ:contained, ZR:not contained */
730 {
731  while (*str && *str != chr) str++;
732  return *str;
733 }
734 
735 
736 /* Test if the byte is DBC 1st byte */
737 static int dbc_1st (BYTE c)
738 {
739 #if FF_CODE_PAGE == 0 /* Variable code page */
740  if (DbcTbl && c >= DbcTbl[0]) {
741  if (c <= DbcTbl[1]) return 1; /* 1st byte range 1 */
742  if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1; /* 1st byte range 2 */
743  }
744 #elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */
745  if (c >= DbcTbl[0]) {
746  if (c <= DbcTbl[1]) return 1;
747  if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1;
748  }
749 #else /* SBCS fixed code page */
750  if (c != 0) return 0; /* Always false */
751 #endif
752  return 0;
753 }
754 
755 
756 /* Test if the byte is DBC 2nd byte */
757 static int dbc_2nd (BYTE c)
758 {
759 #if FF_CODE_PAGE == 0 /* Variable code page */
760  if (DbcTbl && c >= DbcTbl[4]) {
761  if (c <= DbcTbl[5]) return 1; /* 2nd byte range 1 */
762  if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1; /* 2nd byte range 2 */
763  if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1; /* 2nd byte range 3 */
764  }
765 #elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */
766  if (c >= DbcTbl[4]) {
767  if (c <= DbcTbl[5]) return 1;
768  if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1;
769  if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1;
770  }
771 #else /* SBCS fixed code page */
772  if (c != 0) return 0; /* Always false */
773 #endif
774  return 0;
775 }
776 
777 
778 #if FF_USE_LFN
779 
780 /* Get a Unicode code point from the TCHAR string in defined API encodeing */
781 static DWORD tchar2uni ( /* Returns a character in UTF-16 encoding (>=0x10000 on surrogate pair, 0xFFFFFFFF on decode error) */
782  const TCHAR** str /* Pointer to pointer to TCHAR string in configured encoding */
783 )
784 {
785  DWORD uc;
786  const TCHAR *p = *str;
787 
788 #if FF_LFN_UNICODE == 1 /* UTF-16 input */
789  WCHAR wc;
790 
791  uc = *p++; /* Get a unit */
792  if (IsSurrogate(uc)) { /* Surrogate? */
793  wc = *p++; /* Get low surrogate */
794  if (!IsSurrogateH(uc) || !IsSurrogateL(wc)) return 0xFFFFFFFF; /* Wrong surrogate? */
795  uc = uc << 16 | wc;
796  }
797 
798 #elif FF_LFN_UNICODE == 2 /* UTF-8 input */
799  BYTE b;
800  int nf;
801 
802  uc = (BYTE)*p++; /* Get an encoding unit */
803  if (uc & 0x80) { /* Multiple byte code? */
804  if ((uc & 0xE0) == 0xC0) { /* 2-byte sequence? */
805  uc &= 0x1F; nf = 1;
806  } else {
807  if ((uc & 0xF0) == 0xE0) { /* 3-byte sequence? */
808  uc &= 0x0F; nf = 2;
809  } else {
810  if ((uc & 0xF8) == 0xF0) { /* 4-byte sequence? */
811  uc &= 0x07; nf = 3;
812  } else { /* Wrong sequence */
813  return 0xFFFFFFFF;
814  }
815  }
816  }
817  do { /* Get trailing bytes */
818  b = (BYTE)*p++;
819  if ((b & 0xC0) != 0x80) return 0xFFFFFFFF; /* Wrong sequence? */
820  uc = uc << 6 | (b & 0x3F);
821  } while (--nf != 0);
822  if (uc < 0x80 || IsSurrogate(uc) || uc >= 0x110000) return 0xFFFFFFFF; /* Wrong code? */
823  if (uc >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF); /* Make a surrogate pair if needed */
824  }
825 
826 #elif FF_LFN_UNICODE == 3 /* UTF-32 input */
827  uc = (TCHAR)*p++; /* Get a unit */
828  if (uc >= 0x110000 || IsSurrogate(uc)) return 0xFFFFFFFF; /* Wrong code? */
829  if (uc >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF); /* Make a surrogate pair if needed */
830 
831 #else /* ANSI/OEM input */
832  BYTE b;
833  WCHAR wc;
834 
835  wc = (BYTE)*p++; /* Get a byte */
836  if (dbc_1st((BYTE)wc)) { /* Is it a DBC 1st byte? */
837  b = (BYTE)*p++; /* Get 2nd byte */
838  if (!dbc_2nd(b)) return 0xFFFFFFFF; /* Invalid code? */
839  wc = (wc << 8) + b; /* Make a DBC */
840  }
841  if (wc != 0) {
842  wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM ==> Unicode */
843  if (wc == 0) return 0xFFFFFFFF; /* Invalid code? */
844  }
845  uc = wc;
846 
847 #endif
848  *str = p; /* Next read pointer */
849  return uc;
850 }
851 
852 
853 /* Output a TCHAR string in defined API encoding */
854 static BYTE put_utf ( /* Returns number of encoding units written (0:buffer overflow or wrong encoding) */
855  DWORD chr, /* UTF-16 encoded character (Surrogate pair if >=0x10000) */
856  TCHAR* buf, /* Output buffer */
857  UINT szb /* Size of the buffer */
858 )
859 {
860 #if FF_LFN_UNICODE == 1 /* UTF-16 output */
861  WCHAR hs, wc;
862 
863  hs = (WCHAR)(chr >> 16);
864  wc = (WCHAR)chr;
865  if (hs == 0) { /* Single encoding unit? */
866  if (szb < 1 || IsSurrogate(wc)) return 0; /* Buffer overflow or wrong code? */
867  *buf = wc;
868  return 1;
869  }
870  if (szb < 2 || !IsSurrogateH(hs) || !IsSurrogateL(wc)) return 0; /* Buffer overflow or wrong surrogate? */
871  *buf++ = hs;
872  *buf++ = wc;
873  return 2;
874 
875 #elif FF_LFN_UNICODE == 2 /* UTF-8 output */
876  DWORD hc;
877 
878  if (chr < 0x80) { /* Single byte code? */
879  if (szb < 1) return 0; /* Buffer overflow? */
880  *buf = (TCHAR)chr;
881  return 1;
882  }
883  if (chr < 0x800) { /* 2-byte sequence? */
884  if (szb < 2) return 0; /* Buffer overflow? */
885  *buf++ = (TCHAR)(0xC0 | (chr >> 6 & 0x1F));
886  *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
887  return 2;
888  }
889  if (chr < 0x10000) { /* 3-byte sequence? */
890  if (szb < 3 || IsSurrogate(chr)) return 0; /* Buffer overflow or wrong code? */
891  *buf++ = (TCHAR)(0xE0 | (chr >> 12 & 0x0F));
892  *buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));
893  *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
894  return 3;
895  }
896  /* 4-byte sequence */
897  if (szb < 4) return 0; /* Buffer overflow? */
898  hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6; /* Get high 10 bits */
899  chr = (chr & 0xFFFF) - 0xDC00; /* Get low 10 bits */
900  if (hc >= 0x100000 || chr >= 0x400) return 0; /* Wrong surrogate? */
901  chr = (hc | chr) + 0x10000;
902  *buf++ = (TCHAR)(0xF0 | (chr >> 18 & 0x07));
903  *buf++ = (TCHAR)(0x80 | (chr >> 12 & 0x3F));
904  *buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));
905  *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
906  return 4;
907 
908 #elif FF_LFN_UNICODE == 3 /* UTF-32 output */
909  DWORD hc;
910 
911  if (szb < 1) return 0; /* Buffer overflow? */
912  if (chr >= 0x10000) { /* Out of BMP? */
913  hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6; /* Get high 10 bits */
914  chr = (chr & 0xFFFF) - 0xDC00; /* Get low 10 bits */
915  if (hc >= 0x100000 || chr >= 0x400) return 0; /* Wrong surrogate? */
916  chr = (hc | chr) + 0x10000;
917  }
918  *buf++ = (TCHAR)chr;
919  return 1;
920 
921 #else /* ANSI/OEM output */
922  WCHAR wc;
923 
924  wc = ff_uni2oem(chr, CODEPAGE);
925  if (wc >= 0x100) { /* Is this a DBC? */
926  if (szb < 2) return 0;
927  *buf++ = (char)(wc >> 8); /* Store DBC 1st byte */
928  *buf++ = (TCHAR)wc; /* Store DBC 2nd byte */
929  return 2;
930  }
931  if (wc == 0 || szb < 1) return 0; /* Invalid char or buffer overflow? */
932  *buf++ = (TCHAR)wc; /* Store the character */
933  return 1;
934 #endif
935 }
936 #endif /* FF_USE_LFN */
937 
938 
939 #if FF_FS_REENTRANT
940 /*-----------------------------------------------------------------------*/
941 /* Request/Release grant to access the volume */
942 /*-----------------------------------------------------------------------*/
943 static int lock_fs ( /* 1:Ok, 0:timeout */
944  FATFS* fs /* Filesystem object */
945 )
946 {
947  return ff_req_grant(fs->sobj);
948 }
949 
950 
951 static void unlock_fs (
952  FATFS* fs, /* Filesystem object */
953  FRESULT res /* Result code to be returned */
954 )
955 {
956  if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {
957  ff_rel_grant(fs->sobj);
958  }
959 }
960 
961 #endif
962 
963 
964 
965 #if FF_FS_LOCK != 0
966 /*-----------------------------------------------------------------------*/
967 /* File lock control functions */
968 /*-----------------------------------------------------------------------*/
969 
970 static FRESULT chk_lock ( /* Check if the file can be accessed */
971  DIR* dp, /* Directory object pointing the file to be checked */
972  int acc /* Desired access type (0:Read mode open, 1:Write mode open, 2:Delete or rename) */
973 )
974 {
975  UINT i, be;
976 
977  /* Search open object table for the object */
978  be = 0;
979  for (i = 0; i < FF_FS_LOCK; i++) {
980  if (Files[i].fs) { /* Existing entry */
981  if (Files[i].fs == dp->obj.fs && /* Check if the object matches with an open object */
982  Files[i].clu == dp->obj.sclust &&
983  Files[i].ofs == dp->dptr) break;
984  } else { /* Blank entry */
985  be = 1;
986  }
987  }
988  if (i == FF_FS_LOCK) { /* The object has not been opened */
989  return (!be && acc != 2) ? FR_TOO_MANY_OPEN_FILES : FR_OK; /* Is there a blank entry for new object? */
990  }
991 
992  /* The object was opened. Reject any open against writing file and all write mode open */
993  return (acc != 0 || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
994 }
995 
996 
997 static int enq_lock (void) /* Check if an entry is available for a new object */
998 {
999  UINT i;
1000 
1001  for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ;
1002  return (i == FF_FS_LOCK) ? 0 : 1;
1003 }
1004 
1005 
1006 static UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
1007  DIR* dp, /* Directory object pointing the file to register or increment */
1008  int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
1009 )
1010 {
1011  UINT i;
1012 
1013 
1014  for (i = 0; i < FF_FS_LOCK; i++) { /* Find the object */
1015  if (Files[i].fs == dp->obj.fs
1016  && Files[i].clu == dp->obj.sclust
1017  && Files[i].ofs == dp->dptr) break;
1018  }
1019 
1020  if (i == FF_FS_LOCK) { /* Not opened. Register it as new. */
1021  for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ;
1022  if (i == FF_FS_LOCK) return 0; /* No free entry to register (int err) */
1023  Files[i].fs = dp->obj.fs;
1024  Files[i].clu = dp->obj.sclust;
1025  Files[i].ofs = dp->dptr;
1026  Files[i].ctr = 0;
1027  }
1028 
1029  if (acc >= 1 && Files[i].ctr) return 0; /* Access violation (int err) */
1030 
1031  Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
1032 
1033  return i + 1; /* Index number origin from 1 */
1034 }
1035 
1036 
1037 static FRESULT dec_lock ( /* Decrement object open counter */
1038  UINT i /* Semaphore index (1..) */
1039 )
1040 {
1041  WORD n;
1042  FRESULT res;
1043 
1044 
1045  if (--i < FF_FS_LOCK) { /* Index number origin from 0 */
1046  n = Files[i].ctr;
1047  if (n == 0x100) n = 0; /* If write mode open, delete the entry */
1048  if (n > 0) n--; /* Decrement read mode open count */
1049  Files[i].ctr = n;
1050  if (n == 0) Files[i].fs = 0; /* Delete the entry if open count gets zero */
1051  res = FR_OK;
1052  } else {
1053  res = FR_INT_ERR; /* Invalid index nunber */
1054  }
1055  return res;
1056 }
1057 
1058 
1059 static void clear_lock ( /* Clear lock entries of the volume */
1060  FATFS *fs
1061 )
1062 {
1063  UINT i;
1064 
1065  for (i = 0; i < FF_FS_LOCK; i++) {
1066  if (Files[i].fs == fs) Files[i].fs = 0;
1067  }
1068 }
1069 
1070 #endif /* FF_FS_LOCK != 0 */
1071 
1072 
1073 
1074 /*-----------------------------------------------------------------------*/
1075 /* Move/Flush disk access window in the filesystem object */
1076 /*-----------------------------------------------------------------------*/
1077 #if !FF_FS_READONLY
1078 static FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERR */
1079  FATFS* fs /* Filesystem object */
1080 )
1081 {
1082  FRESULT res = FR_OK;
1083 
1084 
1085  if (fs->wflag) { /* Is the disk access window dirty? */
1086  if (disk_write(fs->pdrv, fs->win, fs->winsect, 1) == RES_OK) { /* Write it back into the volume */
1087  fs->wflag = 0; /* Clear window dirty flag */
1088  if (fs->winsect - fs->fatbase < fs->fsize) { /* Is it in the 1st FAT? */
1089  if (fs->n_fats == 2) disk_write(fs->pdrv, fs->win, fs->winsect + fs->fsize, 1); /* Reflect it to 2nd FAT if needed */
1090  }
1091  } else {
1092  res = FR_DISK_ERR;
1093  }
1094  }
1095  return res;
1096 }
1097 #endif
1098 
1099 
1100 static FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERR */
1101  FATFS* fs, /* Filesystem object */
1102  LBA_t sect /* Sector LBA to make appearance in the fs->win[] */
1103 )
1104 {
1105  FRESULT res = FR_OK;
1106 
1107 
1108  if (sect != fs->winsect) { /* Window offset changed? */
1109 #if !FF_FS_READONLY
1110  res = sync_window(fs); /* Flush the window */
1111 #endif
1112  if (res == FR_OK) { /* Fill sector window with new data */
1113  if (disk_read(fs->pdrv, fs->win, sect, 1) != RES_OK) {
1114  sect = (LBA_t)0 - 1; /* Invalidate window if read data is not valid */
1115  res = FR_DISK_ERR;
1116  }
1117  fs->winsect = sect;
1118  }
1119  }
1120  return res;
1121 }
1122 
1123 
1124 
1125 
1126 #if !FF_FS_READONLY
1127 /*-----------------------------------------------------------------------*/
1128 /* Synchronize filesystem and data on the storage */
1129 /*-----------------------------------------------------------------------*/
1130 
1131 static FRESULT sync_fs ( /* Returns FR_OK or FR_DISK_ERR */
1132  FATFS* fs /* Filesystem object */
1133 )
1134 {
1135  FRESULT res;
1136 
1137 
1138  res = sync_window(fs);
1139  if (res == FR_OK) {
1140  if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) { /* FAT32: Update FSInfo sector if needed */
1141  /* Create FSInfo structure */
1142  mem_set(fs->win, 0, sizeof fs->win);
1143  st_word(fs->win + BS_55AA, 0xAA55);
1144  st_dword(fs->win + FSI_LeadSig, 0x41615252);
1145  st_dword(fs->win + FSI_StrucSig, 0x61417272);
1146  st_dword(fs->win + FSI_Free_Count, fs->free_clst);
1147  st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);
1148  /* Write it into the FSInfo sector */
1149  fs->winsect = fs->volbase + 1;
1150  disk_write(fs->pdrv, fs->win, fs->winsect, 1);
1151  fs->fsi_flag = 0;
1152  }
1153  /* Make sure that no pending write process in the lower layer */
1154  if (disk_ioctl(fs->pdrv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;
1155  }
1156 
1157  return res;
1158 }
1159 
1160 #endif
1161 
1162 
1163 
1164 /*-----------------------------------------------------------------------*/
1165 /* Get physical sector number from cluster number */
1166 /*-----------------------------------------------------------------------*/
1167 
1168 static LBA_t clst2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
1169  FATFS* fs, /* Filesystem object */
1170  DWORD clst /* Cluster# to be converted */
1171 )
1172 {
1173  clst -= 2; /* Cluster number is origin from 2 */
1174  if (clst >= fs->n_fatent - 2) return 0; /* Is it invalid cluster number? */
1175  return fs->database + (LBA_t)fs->csize * clst; /* Start sector number of the cluster */
1176 }
1177 
1178 
1179 
1180 
1181 /*-----------------------------------------------------------------------*/
1182 /* FAT access - Read value of a FAT entry */
1183 /*-----------------------------------------------------------------------*/
1184 
1185 static DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */
1186  FFOBJID* obj, /* Corresponding object */
1187  DWORD clst /* Cluster number to get the value */
1188 )
1189 {
1190  UINT wc, bc;
1191  DWORD val;
1192  FATFS *fs = obj->fs;
1193 
1194 
1195  if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
1196  val = 1; /* Internal error */
1197 
1198  } else {
1199  val = 0xFFFFFFFF; /* Default value falls on disk error */
1200 
1201  switch (fs->fs_type) {
1202  case FS_FAT12 :
1203  bc = (UINT)clst; bc += bc / 2;
1204  if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
1205  wc = fs->win[bc++ % SS(fs)]; /* Get 1st byte of the entry */
1206  if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
1207  wc |= fs->win[bc % SS(fs)] << 8; /* Merge 2nd byte of the entry */
1208  val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF); /* Adjust bit position */
1209  break;
1210 
1211  case FS_FAT16 :
1212  if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
1213  val = ld_word(fs->win + clst * 2 % SS(fs)); /* Simple WORD array */
1214  break;
1215 
1216  case FS_FAT32 :
1217  if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
1218  val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF; /* Simple DWORD array but mask out upper 4 bits */
1219  break;
1220 #if FF_FS_EXFAT
1221  case FS_EXFAT :
1222  if ((obj->objsize != 0 && obj->sclust != 0) || obj->stat == 0) { /* Object except root dir must have valid data length */
1223  DWORD cofs = clst - obj->sclust; /* Offset from start cluster */
1224  DWORD clen = (DWORD)((LBA_t)((obj->objsize - 1) / SS(fs)) / fs->csize); /* Number of clusters - 1 */
1225 
1226  if (obj->stat == 2 && cofs <= clen) { /* Is it a contiguous chain? */
1227  val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* No data on the FAT, generate the value */
1228  break;
1229  }
1230  if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the 1st fragment? */
1231  val = clst + 1; /* Generate the value */
1232  break;
1233  }
1234  if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */
1235  if (obj->n_frag != 0) { /* Is it on the growing edge? */
1236  val = 0x7FFFFFFF; /* Generate EOC */
1237  } else {
1238  if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
1239  val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;
1240  }
1241  break;
1242  }
1243  }
1244  /* go to default */
1245 #endif
1246  default:
1247  val = 1; /* Internal error */
1248  }
1249  }
1250 
1251  return val;
1252 }
1253 
1254 
1255 
1256 
1257 #if !FF_FS_READONLY
1258 /*-----------------------------------------------------------------------*/
1259 /* FAT access - Change value of a FAT entry */
1260 /*-----------------------------------------------------------------------*/
1261 
1262 static FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
1263  FATFS* fs, /* Corresponding filesystem object */
1264  DWORD clst, /* FAT index number (cluster number) to be changed */
1265  DWORD val /* New value to be set to the entry */
1266 )
1267 {
1268  UINT bc;
1269  BYTE *p;
1270  FRESULT res = FR_INT_ERR;
1271 
1272 
1273  if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */
1274  switch (fs->fs_type) {
1275  case FS_FAT12 :
1276  bc = (UINT)clst; bc += bc / 2; /* bc: byte offset of the entry */
1277  res = move_window(fs, fs->fatbase + (bc / SS(fs)));
1278  if (res != FR_OK) break;
1279  p = fs->win + bc++ % SS(fs);
1280  *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; /* Update 1st byte */
1281  fs->wflag = 1;
1282  res = move_window(fs, fs->fatbase + (bc / SS(fs)));
1283  if (res != FR_OK) break;
1284  p = fs->win + bc % SS(fs);
1285  *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); /* Update 2nd byte */
1286  fs->wflag = 1;
1287  break;
1288 
1289  case FS_FAT16 :
1290  res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
1291  if (res != FR_OK) break;
1292  st_word(fs->win + clst * 2 % SS(fs), (WORD)val); /* Simple WORD array */
1293  fs->wflag = 1;
1294  break;
1295 
1296  case FS_FAT32 :
1297 #if FF_FS_EXFAT
1298  case FS_EXFAT :
1299 #endif
1300  res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
1301  if (res != FR_OK) break;
1302  if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {
1303  val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);
1304  }
1305  st_dword(fs->win + clst * 4 % SS(fs), val);
1306  fs->wflag = 1;
1307  break;
1308  }
1309  }
1310  return res;
1311 }
1312 
1313 #endif /* !FF_FS_READONLY */
1314 
1315 
1316 
1317 
1318 #if FF_FS_EXFAT && !FF_FS_READONLY
1319 /*-----------------------------------------------------------------------*/
1320 /* exFAT: Accessing FAT and Allocation Bitmap */
1321 /*-----------------------------------------------------------------------*/
1322 
1323 /*--------------------------------------*/
1324 /* Find a contiguous free cluster block */
1325 /*--------------------------------------*/
1326 
1327 static DWORD find_bitmap ( /* 0:Not found, 2..:Cluster block found, 0xFFFFFFFF:Disk error */
1328  FATFS* fs, /* Filesystem object */
1329  DWORD clst, /* Cluster number to scan from */
1330  DWORD ncl /* Number of contiguous clusters to find (1..) */
1331 )
1332 {
1333  BYTE bm, bv;
1334  UINT i;
1335  DWORD val, scl, ctr;
1336 
1337 
1338  clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */
1339  if (clst >= fs->n_fatent - 2) clst = 0;
1340  scl = val = clst; ctr = 0;
1341  for (;;) {
1342  if (move_window(fs, fs->bitbase + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF;
1343  i = val / 8 % SS(fs); bm = 1 << (val % 8);
1344  do {
1345  do {
1346  bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */
1347  if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */
1348  val = 0; bm = 0; i = SS(fs);
1349  }
1350  if (bv == 0) { /* Is it a free cluster? */
1351  if (++ctr == ncl) return scl + 2; /* Check if run length is sufficient for required */
1352  } else {
1353  scl = val; ctr = 0; /* Encountered a cluster in-use, restart to scan */
1354  }
1355  if (val == clst) return 0; /* All cluster scanned? */
1356  } while (bm != 0);
1357  bm = 1;
1358  } while (++i < SS(fs));
1359  }
1360 }
1361 
1362 
1363 /*----------------------------------------*/
1364 /* Set/Clear a block of allocation bitmap */
1365 /*----------------------------------------*/
1366 
1367 static FRESULT change_bitmap (
1368  FATFS* fs, /* Filesystem object */
1369  DWORD clst, /* Cluster number to change from */
1370  DWORD ncl, /* Number of clusters to be changed */
1371  int bv /* bit value to be set (0 or 1) */
1372 )
1373 {
1374  BYTE bm;
1375  UINT i;
1376  LBA_t sect;
1377 
1378 
1379  clst -= 2; /* The first bit corresponds to cluster #2 */
1380  sect = fs->bitbase + clst / 8 / SS(fs); /* Sector address */
1381  i = clst / 8 % SS(fs); /* Byte offset in the sector */
1382  bm = 1 << (clst % 8); /* Bit mask in the byte */
1383  for (;;) {
1384  if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;
1385  do {
1386  do {
1387  if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */
1388  fs->win[i] ^= bm; /* Flip the bit */
1389  fs->wflag = 1;
1390  if (--ncl == 0) return FR_OK; /* All bits processed? */
1391  } while (bm <<= 1); /* Next bit */
1392  bm = 1;
1393  } while (++i < SS(fs)); /* Next byte */
1394  i = 0;
1395  }
1396 }
1397 
1398 
1399 /*---------------------------------------------*/
1400 /* Fill the first fragment of the FAT chain */
1401 /*---------------------------------------------*/
1402 
1403 static FRESULT fill_first_frag (
1404  FFOBJID* obj /* Pointer to the corresponding object */
1405 )
1406 {
1407  FRESULT res;
1408  DWORD cl, n;
1409 
1410 
1411  if (obj->stat == 3) { /* Has the object been changed 'fragmented' in this session? */
1412  for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */
1413  res = put_fat(obj->fs, cl, cl + 1);
1414  if (res != FR_OK) return res;
1415  }
1416  obj->stat = 0; /* Change status 'FAT chain is valid' */
1417  }
1418  return FR_OK;
1419 }
1420 
1421 
1422 /*---------------------------------------------*/
1423 /* Fill the last fragment of the FAT chain */
1424 /*---------------------------------------------*/
1425 
1426 static FRESULT fill_last_frag (
1427  FFOBJID* obj, /* Pointer to the corresponding object */
1428  DWORD lcl, /* Last cluster of the fragment */
1429  DWORD term /* Value to set the last FAT entry */
1430 )
1431 {
1432  FRESULT res;
1433 
1434 
1435  while (obj->n_frag > 0) { /* Create the chain of last fragment */
1436  res = put_fat(obj->fs, lcl - obj->n_frag + 1, (obj->n_frag > 1) ? lcl - obj->n_frag + 2 : term);
1437  if (res != FR_OK) return res;
1438  obj->n_frag--;
1439  }
1440  return FR_OK;
1441 }
1442 
1443 #endif /* FF_FS_EXFAT && !FF_FS_READONLY */
1444 
1445 
1446 
1447 #if !FF_FS_READONLY
1448 /*-----------------------------------------------------------------------*/
1449 /* FAT handling - Remove a cluster chain */
1450 /*-----------------------------------------------------------------------*/
1451 
1452 static FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
1453  FFOBJID* obj, /* Corresponding object */
1454  DWORD clst, /* Cluster to remove a chain from */
1455  DWORD pclst /* Previous cluster of clst (0 if entire chain) */
1456 )
1457 {
1458  FRESULT res = FR_OK;
1459  DWORD nxt;
1460  FATFS *fs = obj->fs;
1461 #if FF_FS_EXFAT || FF_USE_TRIM
1462  DWORD scl = clst, ecl = clst;
1463 #endif
1464 #if FF_USE_TRIM
1465  LBA_t rt[2];
1466 #endif
1467 
1468  if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */
1469 
1470  /* Mark the previous cluster 'EOC' on the FAT if it exists */
1471  if (pclst != 0 && (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {
1472  res = put_fat(fs, pclst, 0xFFFFFFFF);
1473  if (res != FR_OK) return res;
1474  }
1475 
1476  /* Remove the chain */
1477  do {
1478  nxt = get_fat(obj, clst); /* Get cluster status */
1479  if (nxt == 0) break; /* Empty cluster? */
1480  if (nxt == 1) return FR_INT_ERR; /* Internal error? */
1481  if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */
1482  if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {
1483  res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */
1484  if (res != FR_OK) return res;
1485  }
1486  if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
1487  fs->free_clst++;
1488  fs->fsi_flag |= 1;
1489  }
1490 #if FF_FS_EXFAT || FF_USE_TRIM
1491  if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
1492  ecl = nxt;
1493  } else { /* End of contiguous cluster block */
1494 #if FF_FS_EXFAT
1495  if (fs->fs_type == FS_EXFAT) {
1496  res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */
1497  if (res != FR_OK) return res;
1498  }
1499 #endif
1500 #if FF_USE_TRIM
1501  rt[0] = clst2sect(fs, scl); /* Start of data area to be freed */
1502  rt[1] = clst2sect(fs, ecl) + fs->csize - 1; /* End of data area to be freed */
1503  disk_ioctl(fs->pdrv, CTRL_TRIM, rt); /* Inform storage device that the data in the block may be erased */
1504 #endif
1505  scl = ecl = nxt;
1506  }
1507 #endif
1508  clst = nxt; /* Next cluster */
1509  } while (clst < fs->n_fatent); /* Repeat while not the last link */
1510 
1511 #if FF_FS_EXFAT
1512  /* Some post processes for chain status */
1513  if (fs->fs_type == FS_EXFAT) {
1514  if (pclst == 0) { /* Has the entire chain been removed? */
1515  obj->stat = 0; /* Change the chain status 'initial' */
1516  } else {
1517  if (obj->stat == 0) { /* Is it a fragmented chain from the beginning of this session? */
1518  clst = obj->sclust; /* Follow the chain to check if it gets contiguous */
1519  while (clst != pclst) {
1520  nxt = get_fat(obj, clst);
1521  if (nxt < 2) return FR_INT_ERR;
1522  if (nxt == 0xFFFFFFFF) return FR_DISK_ERR;
1523  if (nxt != clst + 1) break; /* Not contiguous? */
1524  clst++;
1525  }
1526  if (clst == pclst) { /* Has the chain got contiguous again? */
1527  obj->stat = 2; /* Change the chain status 'contiguous' */
1528  }
1529  } else {
1530  if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Was the chain fragmented in this session and got contiguous again? */
1531  obj->stat = 2; /* Change the chain status 'contiguous' */
1532  }
1533  }
1534  }
1535  }
1536 #endif
1537  return FR_OK;
1538 }
1539 
1540 
1541 
1542 
1543 /*-----------------------------------------------------------------------*/
1544 /* FAT handling - Stretch a chain or Create a new chain */
1545 /*-----------------------------------------------------------------------*/
1546 
1547 static DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
1548  FFOBJID* obj, /* Corresponding object */
1549  DWORD clst /* Cluster# to stretch, 0:Create a new chain */
1550 )
1551 {
1552  DWORD cs, ncl, scl;
1553  FRESULT res;
1554  FATFS *fs = obj->fs;
1555 
1556 
1557  if (clst == 0) { /* Create a new chain */
1558  scl = fs->last_clst; /* Suggested cluster to start to find */
1559  if (scl == 0 || scl >= fs->n_fatent) scl = 1;
1560  }
1561  else { /* Stretch a chain */
1562  cs = get_fat(obj, clst); /* Check the cluster status */
1563  if (cs < 2) return 1; /* Test for insanity */
1564  if (cs == 0xFFFFFFFF) return cs; /* Test for disk error */
1565  if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
1566  scl = clst; /* Cluster to start to find */
1567  }
1568  if (fs->free_clst == 0) return 0; /* No free cluster */
1569 
1570 #if FF_FS_EXFAT
1571  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
1572  ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */
1573  if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */
1574  res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */
1575  if (res == FR_INT_ERR) return 1;
1576  if (res == FR_DISK_ERR) return 0xFFFFFFFF;
1577  if (clst == 0) { /* Is it a new chain? */
1578  obj->stat = 2; /* Set status 'contiguous' */
1579  } else { /* It is a stretched chain */
1580  if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */
1581  obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */
1582  obj->stat = 3; /* Change status 'just fragmented' */
1583  }
1584  }
1585  if (obj->stat != 2) { /* Is the file non-contiguous? */
1586  if (ncl == clst + 1) { /* Is the cluster next to previous one? */
1587  obj->n_frag = obj->n_frag ? obj->n_frag + 1 : 2; /* Increment size of last framgent */
1588  } else { /* New fragment */
1589  if (obj->n_frag == 0) obj->n_frag = 1;
1590  res = fill_last_frag(obj, clst, ncl); /* Fill last fragment on the FAT and link it to new one */
1591  if (res == FR_OK) obj->n_frag = 1;
1592  }
1593  }
1594  } else
1595 #endif
1596  { /* On the FAT/FAT32 volume */
1597  ncl = 0;
1598  if (scl == clst) { /* Stretching an existing chain? */
1599  ncl = scl + 1; /* Test if next cluster is free */
1600  if (ncl >= fs->n_fatent) ncl = 2;
1601  cs = get_fat(obj, ncl); /* Get next cluster status */
1602  if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* Test for error */
1603  if (cs != 0) { /* Not free? */
1604  cs = fs->last_clst; /* Start at suggested cluster if it is valid */
1605  if (cs >= 2 && cs < fs->n_fatent) scl = cs;
1606  ncl = 0;
1607  }
1608  }
1609  if (ncl == 0) { /* The new cluster cannot be contiguous and find another fragment */
1610  ncl = scl; /* Start cluster */
1611  for (;;) {
1612  ncl++; /* Next cluster */
1613  if (ncl >= fs->n_fatent) { /* Check wrap-around */
1614  ncl = 2;
1615  if (ncl > scl) return 0; /* No free cluster found? */
1616  }
1617  cs = get_fat(obj, ncl); /* Get the cluster status */
1618  if (cs == 0) break; /* Found a free cluster? */
1619  if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* Test for error */
1620  if (ncl == scl) return 0; /* No free cluster found? */
1621  }
1622  }
1623  res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */
1624  if (res == FR_OK && clst != 0) {
1625  res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */
1626  }
1627  }
1628 
1629  if (res == FR_OK) { /* Update FSINFO if function succeeded. */
1630  fs->last_clst = ncl;
1631  if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--;
1632  fs->fsi_flag |= 1;
1633  } else {
1634  ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Generate error status */
1635  }
1636 
1637  return ncl; /* Return new cluster number or error status */
1638 }
1639 
1640 #endif /* !FF_FS_READONLY */
1641 
1642 
1643 
1644 
1645 #if FF_USE_FASTSEEK
1646 /*-----------------------------------------------------------------------*/
1647 /* FAT handling - Convert offset into cluster with link map table */
1648 /*-----------------------------------------------------------------------*/
1649 
1650 static DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
1651  FIL* fp, /* Pointer to the file object */
1652  FSIZE_t ofs /* File offset to be converted to cluster# */
1653 )
1654 {
1655  DWORD cl, ncl, *tbl;
1656  FATFS *fs = fp->obj.fs;
1657 
1658 
1659  tbl = fp->cltbl + 1; /* Top of CLMT */
1660  cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */
1661  for (;;) {
1662  ncl = *tbl++; /* Number of cluters in the fragment */
1663  if (ncl == 0) return 0; /* End of table? (error) */
1664  if (cl < ncl) break; /* In this fragment? */
1665  cl -= ncl; tbl++; /* Next fragment */
1666  }
1667  return cl + *tbl; /* Return the cluster number */
1668 }
1669 
1670 #endif /* FF_USE_FASTSEEK */
1671 
1672 
1673 
1674 
1675 /*-----------------------------------------------------------------------*/
1676 /* Directory handling - Fill a cluster with zeros */
1677 /*-----------------------------------------------------------------------*/
1678 
1679 #if !FF_FS_READONLY
1680 static FRESULT dir_clear ( /* Returns FR_OK or FR_DISK_ERR */
1681  FATFS *fs, /* Filesystem object */
1682  DWORD clst /* Directory table to clear */
1683 )
1684 {
1685  LBA_t sect;
1686  UINT n, szb;
1687  BYTE *ibuf;
1688 
1689 
1690  if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */
1691  sect = clst2sect(fs, clst); /* Top of the cluster */
1692  fs->winsect = sect; /* Set window to top of the cluster */
1693  mem_set(fs->win, 0, sizeof fs->win); /* Clear window buffer */
1694 #if FF_USE_LFN == 3 /* Quick table clear by using multi-secter write */
1695  /* Allocate a temporary buffer */
1696  for (szb = ((DWORD)fs->csize * SS(fs) >= MAX_MALLOC) ? MAX_MALLOC : fs->csize * SS(fs), ibuf = 0; szb > SS(fs) && (ibuf = ff_memalloc(szb)) == 0; szb /= 2) ;
1697  if (szb > SS(fs)) { /* Buffer allocated? */
1698  mem_set(ibuf, 0, szb);
1699  szb /= SS(fs); /* Bytes -> Sectors */
1700  for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ; /* Fill the cluster with 0 */
1701  ff_memfree(ibuf);
1702  } else
1703 #endif
1704  {
1705  ibuf = fs->win; szb = 1; /* Use window buffer (many single-sector writes may take a time) */
1706  for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ; /* Fill the cluster with 0 */
1707  }
1708  return (n == fs->csize) ? FR_OK : FR_DISK_ERR;
1709 }
1710 #endif /* !FF_FS_READONLY */
1711 
1712 
1713 
1714 
1715 /*-----------------------------------------------------------------------*/
1716 /* Directory handling - Set directory index */
1717 /*-----------------------------------------------------------------------*/
1718 
1719 static FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
1720  DIR* dp, /* Pointer to directory object */
1721  DWORD ofs /* Offset of directory table */
1722 )
1723 {
1724  DWORD csz, clst;
1725  FATFS *fs = dp->obj.fs;
1726 
1727 
1728  if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */
1729  return FR_INT_ERR;
1730  }
1731  dp->dptr = ofs; /* Set current offset */
1732  clst = dp->obj.sclust; /* Table start cluster (0:root) */
1733  if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */
1734  clst = (DWORD)fs->dirbase;
1735  if (FF_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */
1736  }
1737 
1738  if (clst == 0) { /* Static table (root-directory on the FAT volume) */
1739  if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */
1740  dp->sect = fs->dirbase;
1741 
1742  } else { /* Dynamic table (sub-directory or root-directory on the FAT32/exFAT volume) */
1743  csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */
1744  while (ofs >= csz) { /* Follow cluster chain */
1745  clst = get_fat(&dp->obj, clst); /* Get next cluster */
1746  if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
1747  if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */
1748  ofs -= csz;
1749  }
1750  dp->sect = clst2sect(fs, clst);
1751  }
1752  dp->clust = clst; /* Current cluster# */
1753  if (dp->sect == 0) return FR_INT_ERR;
1754  dp->sect += ofs / SS(fs); /* Sector# of the directory entry */
1755  dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */
1756 
1757  return FR_OK;
1758 }
1759 
1760 
1761 
1762 
1763 /*-----------------------------------------------------------------------*/
1764 /* Directory handling - Move directory table index next */
1765 /*-----------------------------------------------------------------------*/
1766 
1767 static FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
1768  DIR* dp, /* Pointer to the directory object */
1769  int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
1770 )
1771 {
1772  DWORD ofs, clst;
1773  FATFS *fs = dp->obj.fs;
1774 
1775 
1776  ofs = dp->dptr + SZDIRE; /* Next entry */
1777  if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) dp->sect = 0; /* Disable it if the offset reached the max value */
1778  if (dp->sect == 0) return FR_NO_FILE; /* Report EOT if it has been disabled */
1779 
1780  if (ofs % SS(fs) == 0) { /* Sector changed? */
1781  dp->sect++; /* Next sector */
1782 
1783  if (dp->clust == 0) { /* Static table */
1784  if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */
1785  dp->sect = 0; return FR_NO_FILE;
1786  }
1787  }
1788  else { /* Dynamic table */
1789  if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */
1790  clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */
1791  if (clst <= 1) return FR_INT_ERR; /* Internal error */
1792  if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
1793  if (clst >= fs->n_fatent) { /* It reached end of dynamic table */
1794 #if !FF_FS_READONLY
1795  if (!stretch) { /* If no stretch, report EOT */
1796  dp->sect = 0; return FR_NO_FILE;
1797  }
1798  clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */
1799  if (clst == 0) return FR_DENIED; /* No free cluster */
1800  if (clst == 1) return FR_INT_ERR; /* Internal error */
1801  if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
1802  if (dir_clear(fs, clst) != FR_OK) return FR_DISK_ERR; /* Clean up the stretched table */
1803  if (FF_FS_EXFAT) dp->obj.stat |= 4; /* exFAT: The directory has been stretched */
1804 #else
1805  if (!stretch) dp->sect = 0; /* (this line is to suppress compiler warning) */
1806  dp->sect = 0; return FR_NO_FILE; /* Report EOT */
1807 #endif
1808  }
1809  dp->clust = clst; /* Initialize data for new cluster */
1810  dp->sect = clst2sect(fs, clst);
1811  }
1812  }
1813  }
1814  dp->dptr = ofs; /* Current entry */
1815  dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */
1816 
1817  return FR_OK;
1818 }
1819 
1820 
1821 
1822 
1823 #if !FF_FS_READONLY
1824 /*-----------------------------------------------------------------------*/
1825 /* Directory handling - Reserve a block of directory entries */
1826 /*-----------------------------------------------------------------------*/
1827 
1828 static FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
1829  DIR* dp, /* Pointer to the directory object */
1830  UINT nent /* Number of contiguous entries to allocate */
1831 )
1832 {
1833  FRESULT res;
1834  UINT n;
1835  FATFS *fs = dp->obj.fs;
1836 
1837 
1838  res = dir_sdi(dp, 0);
1839  if (res == FR_OK) {
1840  n = 0;
1841  do {
1842  res = move_window(fs, dp->sect);
1843  if (res != FR_OK) break;
1844 #if FF_FS_EXFAT
1845  if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {
1846 #else
1847  if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {
1848 #endif
1849  if (++n == nent) break; /* A block of contiguous free entries is found */
1850  } else {
1851  n = 0; /* Not a blank entry. Restart to search */
1852  }
1853  res = dir_next(dp, 1);
1854  } while (res == FR_OK); /* Next entry with table stretch enabled */
1855  }
1856 
1857  if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
1858  return res;
1859 }
1860 
1861 #endif /* !FF_FS_READONLY */
1862 
1863 
1864 
1865 
1866 /*-----------------------------------------------------------------------*/
1867 /* FAT: Directory handling - Load/Store start cluster number */
1868 /*-----------------------------------------------------------------------*/
1869 
1870 static DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
1871  FATFS* fs, /* Pointer to the fs object */
1872  const BYTE* dir /* Pointer to the key entry */
1873 )
1874 {
1875  DWORD cl;
1876 
1877  cl = ld_word(dir + DIR_FstClusLO);
1878  if (fs->fs_type == FS_FAT32) {
1879  cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;
1880  }
1881 
1882  return cl;
1883 }
1884 
1885 
1886 #if !FF_FS_READONLY
1887 static void st_clust (
1888  FATFS* fs, /* Pointer to the fs object */
1889  BYTE* dir, /* Pointer to the key entry */
1890  DWORD cl /* Value to be set */
1891 )
1892 {
1893  st_word(dir + DIR_FstClusLO, (WORD)cl);
1894  if (fs->fs_type == FS_FAT32) {
1895  st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));
1896  }
1897 }
1898 #endif
1899 
1900 
1901 
1902 #if FF_USE_LFN
1903 /*--------------------------------------------------------*/
1904 /* FAT-LFN: Compare a part of file name with an LFN entry */
1905 /*--------------------------------------------------------*/
1906 
1907 static int cmp_lfn ( /* 1:matched, 0:not matched */
1908  const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
1909  BYTE* dir /* Pointer to the directory entry containing the part of LFN */
1910 )
1911 {
1912  UINT i, s;
1913  WCHAR wc, uc;
1914 
1915 
1916  if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
1917 
1918  i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
1919 
1920  for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
1921  uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
1922  if (wc != 0) {
1923  if (i >= FF_MAX_LFN + 1 || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */
1924  return 0; /* Not matched */
1925  }
1926  wc = uc;
1927  } else {
1928  if (uc != 0xFFFF) return 0; /* Check filler */
1929  }
1930  }
1931 
1932  if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0; /* Last segment matched but different length */
1933 
1934  return 1; /* The part of LFN matched */
1935 }
1936 
1937 
1938 #if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT
1939 /*-----------------------------------------------------*/
1940 /* FAT-LFN: Pick a part of file name from an LFN entry */
1941 /*-----------------------------------------------------*/
1942 
1943 static int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
1944  WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
1945  BYTE* dir /* Pointer to the LFN entry */
1946 )
1947 {
1948  UINT i, s;
1949  WCHAR wc, uc;
1950 
1951 
1952  if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO is 0 */
1953 
1954  i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13; /* Offset in the LFN buffer */
1955 
1956  for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
1957  uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
1958  if (wc != 0) {
1959  if (i >= FF_MAX_LFN + 1) return 0; /* Buffer overflow? */
1960  lfnbuf[i++] = wc = uc; /* Store it */
1961  } else {
1962  if (uc != 0xFFFF) return 0; /* Check filler */
1963  }
1964  }
1965 
1966  if (dir[LDIR_Ord] & LLEF && wc != 0) { /* Put terminator if it is the last LFN part and not terminated */
1967  if (i >= FF_MAX_LFN + 1) return 0; /* Buffer overflow? */
1968  lfnbuf[i] = 0;
1969  }
1970 
1971  return 1; /* The part of LFN is valid */
1972 }
1973 #endif
1974 
1975 
1976 #if !FF_FS_READONLY
1977 /*-----------------------------------------*/
1978 /* FAT-LFN: Create an entry of LFN entries */
1979 /*-----------------------------------------*/
1980 
1981 static void put_lfn (
1982  const WCHAR* lfn, /* Pointer to the LFN */
1983  BYTE* dir, /* Pointer to the LFN entry to be created */
1984  BYTE ord, /* LFN order (1-20) */
1985  BYTE sum /* Checksum of the corresponding SFN */
1986 )
1987 {
1988  UINT i, s;
1989  WCHAR wc;
1990 
1991 
1992  dir[LDIR_Chksum] = sum; /* Set checksum */
1993  dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
1994  dir[LDIR_Type] = 0;
1995  st_word(dir + LDIR_FstClusLO, 0);
1996 
1997  i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
1998  s = wc = 0;
1999  do {
2000  if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */
2001  st_word(dir + LfnOfs[s], wc); /* Put it */
2002  if (wc == 0) wc = 0xFFFF; /* Padding characters for following items */
2003  } while (++s < 13);
2004  if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */
2005  dir[LDIR_Ord] = ord; /* Set the LFN order */
2006 }
2007 
2008 #endif /* !FF_FS_READONLY */
2009 #endif /* FF_USE_LFN */
2010 
2011 
2012 
2013 #if FF_USE_LFN && !FF_FS_READONLY
2014 /*-----------------------------------------------------------------------*/
2015 /* FAT-LFN: Create a Numbered SFN */
2016 /*-----------------------------------------------------------------------*/
2017 
2018 static void gen_numname (
2019  BYTE* dst, /* Pointer to the buffer to store numbered SFN */
2020  const BYTE* src, /* Pointer to SFN */
2021  const WCHAR* lfn, /* Pointer to LFN */
2022  UINT seq /* Sequence number */
2023 )
2024 {
2025  BYTE ns[8], c;
2026  UINT i, j;
2027  WCHAR wc;
2028  DWORD sreg;
2029 
2030 
2031  mem_cpy(dst, src, 11);
2032 
2033  if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */
2034  sreg = seq;
2035  while (*lfn) { /* Create a CRC as hash value */
2036  wc = *lfn++;
2037  for (i = 0; i < 16; i++) {
2038  sreg = (sreg << 1) + (wc & 1);
2039  wc >>= 1;
2040  if (sreg & 0x10000) sreg ^= 0x11021;
2041  }
2042  }
2043  seq = (UINT)sreg;
2044  }
2045 
2046  /* itoa (hexdecimal) */
2047  i = 7;
2048  do {
2049  c = (BYTE)((seq % 16) + '0');
2050  if (c > '9') c += 7;
2051  ns[i--] = c;
2052  seq /= 16;
2053  } while (seq);
2054  ns[i] = '~';
2055 
2056  /* Append the number to the SFN body */
2057  for (j = 0; j < i && dst[j] != ' '; j++) {
2058  if (dbc_1st(dst[j])) {
2059  if (j == i - 1) break;
2060  j++;
2061  }
2062  }
2063  do {
2064  dst[j++] = (i < 8) ? ns[i++] : ' ';
2065  } while (j < 8);
2066 }
2067 #endif /* FF_USE_LFN && !FF_FS_READONLY */
2068 
2069 
2070 
2071 #if FF_USE_LFN
2072 /*-----------------------------------------------------------------------*/
2073 /* FAT-LFN: Calculate checksum of an SFN entry */
2074 /*-----------------------------------------------------------------------*/
2075 
2076 static BYTE sum_sfn (
2077  const BYTE* dir /* Pointer to the SFN entry */
2078 )
2079 {
2080  BYTE sum = 0;
2081  UINT n = 11;
2082 
2083  do {
2084  sum = (sum >> 1) + (sum << 7) + *dir++;
2085  } while (--n);
2086  return sum;
2087 }
2088 
2089 #endif /* FF_USE_LFN */
2090 
2091 
2092 
2093 #if FF_FS_EXFAT
2094 /*-----------------------------------------------------------------------*/
2095 /* exFAT: Checksum */
2096 /*-----------------------------------------------------------------------*/
2097 
2098 static WORD xdir_sum ( /* Get checksum of the directoly entry block */
2099  const BYTE* dir /* Directory entry block to be calculated */
2100 )
2101 {
2102  UINT i, szblk;
2103  WORD sum;
2104 
2105 
2106  szblk = (dir[XDIR_NumSec] + 1) * SZDIRE; /* Number of bytes of the entry block */
2107  for (i = sum = 0; i < szblk; i++) {
2108  if (i == XDIR_SetSum) { /* Skip 2-byte sum field */
2109  i++;
2110  } else {
2111  sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];
2112  }
2113  }
2114  return sum;
2115 }
2116 
2117 
2118 
2119 static WORD xname_sum ( /* Get check sum (to be used as hash) of the file name */
2120  const WCHAR* name /* File name to be calculated */
2121 )
2122 {
2123  WCHAR chr;
2124  WORD sum = 0;
2125 
2126 
2127  while ((chr = *name++) != 0) {
2128  chr = (WCHAR)ff_wtoupper(chr); /* File name needs to be up-case converted */
2129  sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);
2130  sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);
2131  }
2132  return sum;
2133 }
2134 
2135 
2136 #if !FF_FS_READONLY && FF_USE_MKFS
2137 static DWORD xsum32 ( /* Returns 32-bit checksum */
2138  BYTE dat, /* Byte to be calculated (byte-by-byte processing) */
2139  DWORD sum /* Previous sum value */
2140 )
2141 {
2142  sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;
2143  return sum;
2144 }
2145 #endif
2146 
2147 
2148 #if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2
2149 /*------------------------------------------------------*/
2150 /* exFAT: Get object information from a directory block */
2151 /*------------------------------------------------------*/
2152 
2153 static void get_xfileinfo (
2154  BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */
2155  FILINFO* fno /* Buffer to store the extracted file information */
2156 )
2157 {
2158  WCHAR wc, hs;
2159  UINT di, si, nc;
2160 
2161  /* Get file name from the entry block */
2162  si = SZDIRE * 2; /* 1st C1 entry */
2163  nc = 0; hs = 0; di = 0;
2164  while (nc < dirb[XDIR_NumName]) {
2165  if (si >= MAXDIRB(FF_MAX_LFN)) { di = 0; break; } /* Truncated directory block? */
2166  if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */
2167  wc = ld_word(dirb + si); si += 2; nc++; /* Get a character */
2168  if (hs == 0 && IsSurrogate(wc)) { /* Is it a surrogate? */
2169  hs = wc; continue; /* Get low surrogate */
2170  }
2171  wc = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di); /* Store it in API encoding */
2172  if (wc == 0) { di = 0; break; } /* Buffer overflow or wrong encoding? */
2173  di += wc;
2174  hs = 0;
2175  }
2176  if (hs != 0) di = 0; /* Broken surrogate pair? */
2177  if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object name? */
2178  fno->fname[di] = 0; /* Terminate the name */
2179  fno->altname[0] = 0; /* exFAT does not support SFN */
2180 
2181  fno->fattrib = dirb[XDIR_Attr]; /* Attribute */
2182  fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */
2183  fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */
2184  fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */
2185 }
2186 
2187 #endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */
2188 
2189 
2190 /*-----------------------------------*/
2191 /* exFAT: Get a directry entry block */
2192 /*-----------------------------------*/
2193 
2194 static FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */
2195  DIR* dp /* Reading direcotry object pointing top of the entry block to load */
2196 )
2197 {
2198  FRESULT res;
2199  UINT i, sz_ent;
2200  BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */
2201 
2202 
2203  /* Load file-directory entry */
2204  res = move_window(dp->obj.fs, dp->sect);
2205  if (res != FR_OK) return res;
2206  if (dp->dir[XDIR_Type] != ET_FILEDIR) return FR_INT_ERR; /* Invalid order */
2207  mem_cpy(dirb + 0 * SZDIRE, dp->dir, SZDIRE);
2208  sz_ent = (dirb[XDIR_NumSec] + 1) * SZDIRE;
2209  if (sz_ent < 3 * SZDIRE || sz_ent > 19 * SZDIRE) return FR_INT_ERR;
2210 
2211  /* Load stream-extension entry */
2212  res = dir_next(dp, 0);
2213  if (res == FR_NO_FILE) res = FR_INT_ERR; /* It cannot be */
2214  if (res != FR_OK) return res;
2215  res = move_window(dp->obj.fs, dp->sect);
2216  if (res != FR_OK) return res;
2217  if (dp->dir[XDIR_Type] != ET_STREAM) return FR_INT_ERR; /* Invalid order */
2218  mem_cpy(dirb + 1 * SZDIRE, dp->dir, SZDIRE);
2219  if (MAXDIRB(dirb[XDIR_NumName]) > sz_ent) return FR_INT_ERR;
2220 
2221  /* Load file-name entries */
2222  i = 2 * SZDIRE; /* Name offset to load */
2223  do {
2224  res = dir_next(dp, 0);
2225  if (res == FR_NO_FILE) res = FR_INT_ERR; /* It cannot be */
2226  if (res != FR_OK) return res;
2227  res = move_window(dp->obj.fs, dp->sect);
2228  if (res != FR_OK) return res;
2229  if (dp->dir[XDIR_Type] != ET_FILENAME) return FR_INT_ERR; /* Invalid order */
2230  if (i < MAXDIRB(FF_MAX_LFN)) mem_cpy(dirb + i, dp->dir, SZDIRE);
2231  } while ((i += SZDIRE) < sz_ent);
2232 
2233  /* Sanity check (do it for only accessible object) */
2234  if (i <= MAXDIRB(FF_MAX_LFN)) {
2235  if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;
2236  }
2237  return FR_OK;
2238 }
2239 
2240 
2241 /*------------------------------------------------------------------*/
2242 /* exFAT: Initialize object allocation info with loaded entry block */
2243 /*------------------------------------------------------------------*/
2244 
2245 static void init_alloc_info (
2246  FATFS* fs, /* Filesystem object */
2247  FFOBJID* obj /* Object allocation information to be initialized */
2248 )
2249 {
2250  obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Start cluster */
2251  obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize); /* Size */
2252  obj->stat = fs->dirbuf[XDIR_GenFlags] & 2; /* Allocation status */
2253  obj->n_frag = 0; /* No last fragment info */
2254 }
2255 
2256 
2257 
2258 #if !FF_FS_READONLY || FF_FS_RPATH != 0
2259 /*------------------------------------------------*/
2260 /* exFAT: Load the object's directory entry block */
2261 /*------------------------------------------------*/
2262 
2263 static FRESULT load_obj_xdir (
2264  DIR* dp, /* Blank directory object to be used to access containing direcotry */
2265  const FFOBJID* obj /* Object with its containing directory information */
2266 )
2267 {
2268  FRESULT res;
2269 
2270  /* Open object containing directory */
2271  dp->obj.fs = obj->fs;
2272  dp->obj.sclust = obj->c_scl;
2273  dp->obj.stat = (BYTE)obj->c_size;
2274  dp->obj.objsize = obj->c_size & 0xFFFFFF00;
2275  dp->obj.n_frag = 0;
2276  dp->blk_ofs = obj->c_ofs;
2277 
2278  res = dir_sdi(dp, dp->blk_ofs); /* Goto object's entry block */
2279  if (res == FR_OK) {
2280  res = load_xdir(dp); /* Load the object's entry block */
2281  }
2282  return res;
2283 }
2284 #endif
2285 
2286 
2287 #if !FF_FS_READONLY
2288 /*----------------------------------------*/
2289 /* exFAT: Store the directory entry block */
2290 /*----------------------------------------*/
2291 
2292 static FRESULT store_xdir (
2293  DIR* dp /* Pointer to the direcotry object */
2294 )
2295 {
2296  FRESULT res;
2297  UINT nent;
2298  BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */
2299 
2300  /* Create set sum */
2301  st_word(dirb + XDIR_SetSum, xdir_sum(dirb));
2302  nent = dirb[XDIR_NumSec] + 1;
2303 
2304  /* Store the direcotry entry block to the directory */
2305  res = dir_sdi(dp, dp->blk_ofs);
2306  while (res == FR_OK) {
2307  res = move_window(dp->obj.fs, dp->sect);
2308  if (res != FR_OK) break;
2309  mem_cpy(dp->dir, dirb, SZDIRE);
2310  dp->obj.fs->wflag = 1;
2311  if (--nent == 0) break;
2312  dirb += SZDIRE;
2313  res = dir_next(dp, 0);
2314  }
2315  return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;
2316 }
2317 
2318 
2319 
2320 /*-------------------------------------------*/
2321 /* exFAT: Create a new directory enrty block */
2322 /*-------------------------------------------*/
2323 
2324 static void create_xdir (
2325  BYTE* dirb, /* Pointer to the direcotry entry block buffer */
2326  const WCHAR* lfn /* Pointer to the object name */
2327 )
2328 {
2329  UINT i;
2330  BYTE nc1, nlen;
2331  WCHAR wc;
2332 
2333 
2334  /* Create file-directory and stream-extension entry */
2335  mem_set(dirb, 0, 2 * SZDIRE);
2336  dirb[0 * SZDIRE + XDIR_Type] = ET_FILEDIR;
2337  dirb[1 * SZDIRE + XDIR_Type] = ET_STREAM;
2338 
2339  /* Create file-name entries */
2340  i = SZDIRE * 2; /* Top of file_name entries */
2341  nlen = nc1 = 0; wc = 1;
2342  do {
2343  dirb[i++] = ET_FILENAME; dirb[i++] = 0;
2344  do { /* Fill name field */
2345  if (wc != 0 && (wc = lfn[nlen]) != 0) nlen++; /* Get a character if exist */
2346  st_word(dirb + i, wc); /* Store it */
2347  i += 2;
2348  } while (i % SZDIRE != 0);
2349  nc1++;
2350  } while (lfn[nlen]); /* Fill next entry if any char follows */
2351 
2352  dirb[XDIR_NumName] = nlen; /* Set name length */
2353  dirb[XDIR_NumSec] = 1 + nc1; /* Set secondary count (C0 + C1s) */
2354  st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */
2355 }
2356 
2357 #endif /* !FF_FS_READONLY */
2358 #endif /* FF_FS_EXFAT */
2359 
2360 
2361 
2362 #if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT
2363 /*-----------------------------------------------------------------------*/
2364 /* Read an object from the directory */
2365 /*-----------------------------------------------------------------------*/
2366 
2367 #define DIR_READ_FILE(dp) dir_read(dp, 0)
2368 #define DIR_READ_LABEL(dp) dir_read(dp, 1)
2369 
2370 static FRESULT dir_read (
2371  DIR* dp, /* Pointer to the directory object */
2372  int vol /* Filtered by 0:file/directory or 1:volume label */
2373 )
2374 {
2375  FRESULT res = FR_NO_FILE;
2376  FATFS *fs = dp->obj.fs;
2377  BYTE attr, b;
2378 #if FF_USE_LFN
2379  BYTE ord = 0xFF, sum = 0xFF;
2380 #endif
2381 
2382  while (dp->sect) {
2383  res = move_window(fs, dp->sect);
2384  if (res != FR_OK) break;
2385  b = dp->dir[DIR_Name]; /* Test for the entry type */
2386  if (b == 0) {
2387  res = FR_NO_FILE; break; /* Reached to end of the directory */
2388  }
2389 #if FF_FS_EXFAT
2390  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
2391  if (FF_USE_LABEL && vol) {
2392  if (b == ET_VLABEL) break; /* Volume label entry? */
2393  } else {
2394  if (b == ET_FILEDIR) { /* Start of the file entry block? */
2395  dp->blk_ofs = dp->dptr; /* Get location of the block */
2396  res = load_xdir(dp); /* Load the entry block */
2397  if (res == FR_OK) {
2398  dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */
2399  }
2400  break;
2401  }
2402  }
2403  } else
2404 #endif
2405  { /* On the FAT/FAT32 volume */
2406  dp->obj.attr = attr = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */
2407 #if FF_USE_LFN /* LFN configuration */
2408  if (b == DDEM || b == '.' || (int)((attr & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
2409  ord = 0xFF;
2410  } else {
2411  if (attr == AM_LFN) { /* An LFN entry is found */
2412  if (b & LLEF) { /* Is it start of an LFN sequence? */
2413  sum = dp->dir[LDIR_Chksum];
2414  b &= (BYTE)~LLEF; ord = b;
2415  dp->blk_ofs = dp->dptr;
2416  }
2417  /* Check LFN validity and capture it */
2418  ord = (b == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
2419  } else { /* An SFN entry is found */
2420  if (ord != 0 || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */
2421  dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */
2422  }
2423  break;
2424  }
2425  }
2426 #else /* Non LFN configuration */
2427  if (b != DDEM && b != '.' && attr != AM_LFN && (int)((attr & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */
2428  break;
2429  }
2430 #endif
2431  }
2432  res = dir_next(dp, 0); /* Next entry */
2433  if (res != FR_OK) break;
2434  }
2435 
2436  if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */
2437  return res;
2438 }
2439 
2440 #endif /* FF_FS_MINIMIZE <= 1 || FF_USE_LABEL || FF_FS_RPATH >= 2 */
2441 
2442 
2443 
2444 /*-----------------------------------------------------------------------*/
2445 /* Directory handling - Find an object in the directory */
2446 /*-----------------------------------------------------------------------*/
2447 
2448 static FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
2449  DIR* dp /* Pointer to the directory object with the file name */
2450 )
2451 {
2452  FRESULT res;
2453  FATFS *fs = dp->obj.fs;
2454  BYTE c;
2455 #if FF_USE_LFN
2456  BYTE a, ord, sum;
2457 #endif
2458 
2459  res = dir_sdi(dp, 0); /* Rewind directory object */
2460  if (res != FR_OK) return res;
2461 #if FF_FS_EXFAT
2462  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
2463  BYTE nc;
2464  UINT di, ni;
2465  WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */
2466 
2467  while ((res = DIR_READ_FILE(dp)) == FR_OK) { /* Read an item */
2468 #if FF_MAX_LFN < 255
2469  if (fs->dirbuf[XDIR_NumName] > FF_MAX_LFN) continue; /* Skip comparison if inaccessible object name */
2470 #endif
2471  if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip comparison if hash mismatched */
2472  for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */
2473  if ((di % SZDIRE) == 0) di += 2;
2474  if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;
2475  }
2476  if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */
2477  }
2478  return res;
2479  }
2480 #endif
2481  /* On the FAT/FAT32 volume */
2482 #if FF_USE_LFN
2483  ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
2484 #endif
2485  do {
2486  res = move_window(fs, dp->sect);
2487  if (res != FR_OK) break;
2488  c = dp->dir[DIR_Name];
2489  if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
2490 #if FF_USE_LFN /* LFN configuration */
2491  dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;
2492  if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
2493  ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
2494  } else {
2495  if (a == AM_LFN) { /* An LFN entry is found */
2496  if (!(dp->fn[NSFLAG] & NS_NOLFN)) {
2497  if (c & LLEF) { /* Is it start of LFN sequence? */
2498  sum = dp->dir[LDIR_Chksum];
2499  c &= (BYTE)~LLEF; ord = c; /* LFN start order */
2500  dp->blk_ofs = dp->dptr; /* Start offset of LFN */
2501  }
2502  /* Check validity of the LFN entry and compare it with given name */
2503  ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
2504  }
2505  } else { /* An SFN entry is found */
2506  if (ord == 0 && sum == sum_sfn(dp->dir)) break; /* LFN matched? */
2507  if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */
2508  ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
2509  }
2510  }
2511 #else /* Non LFN configuration */
2512  dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;
2513  if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */
2514 #endif
2515  res = dir_next(dp, 0); /* Next entry */
2516  } while (res == FR_OK);
2517 
2518  return res;
2519 }
2520 
2521 
2522 
2523 
2524 #if !FF_FS_READONLY
2525 /*-----------------------------------------------------------------------*/
2526 /* Register an object to the directory */
2527 /*-----------------------------------------------------------------------*/
2528 
2529 static FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
2530  DIR* dp /* Target directory with object name to be created */
2531 )
2532 {
2533  FRESULT res;
2534  FATFS *fs = dp->obj.fs;
2535 #if FF_USE_LFN /* LFN configuration */
2536  UINT n, nlen, nent;
2537  BYTE sn[12], sum;
2538 
2539 
2540  if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */
2541  for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */
2542 
2543 #if FF_FS_EXFAT
2544  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
2545  nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */
2546  res = dir_alloc(dp, nent); /* Allocate directory entries */
2547  if (res != FR_OK) return res;
2548  dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set the allocated entry block offset */
2549 
2550  if (dp->obj.stat & 4) { /* Has the directory been stretched by new allocation? */
2551  dp->obj.stat &= ~4;
2552  res = fill_first_frag(&dp->obj); /* Fill the first fragment on the FAT if needed */
2553  if (res != FR_OK) return res;
2554  res = fill_last_frag(&dp->obj, dp->clust, 0xFFFFFFFF); /* Fill the last fragment on the FAT if needed */
2555  if (res != FR_OK) return res;
2556  if (dp->obj.sclust != 0) { /* Is it a sub-directory? */
2557  DIR dj;
2558 
2559  res = load_obj_xdir(&dj, &dp->obj); /* Load the object status */
2560  if (res != FR_OK) return res;
2561  dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase the directory size by cluster size */
2562  st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize);
2563  st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);
2564  fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1; /* Update the allocation status */
2565  res = store_xdir(&dj); /* Store the object status */
2566  if (res != FR_OK) return res;
2567  }
2568  }
2569 
2570  create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */
2571  return FR_OK;
2572  }
2573 #endif
2574  /* On the FAT/FAT32 volume */
2575  mem_cpy(sn, dp->fn, 12);
2576  if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
2577  dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */
2578  for (n = 1; n < 100; n++) {
2579  gen_numname(dp->fn, sn, fs->lfnbuf, n); /* Generate a numbered name */
2580  res = dir_find(dp); /* Check if the name collides with existing SFN */
2581  if (res != FR_OK) break;
2582  }
2583  if (n == 100) return FR_DENIED; /* Abort if too many collisions */
2584  if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
2585  dp->fn[NSFLAG] = sn[NSFLAG];
2586  }
2587 
2588  /* Create an SFN with/without LFNs. */
2589  nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */
2590  res = dir_alloc(dp, nent); /* Allocate entries */
2591  if (res == FR_OK && --nent) { /* Set LFN entry if needed */
2592  res = dir_sdi(dp, dp->dptr - nent * SZDIRE);
2593  if (res == FR_OK) {
2594  sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
2595  do { /* Store LFN entries in bottom first */
2596  res = move_window(fs, dp->sect);
2597  if (res != FR_OK) break;
2598  put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum);
2599  fs->wflag = 1;
2600  res = dir_next(dp, 0); /* Next entry */
2601  } while (res == FR_OK && --nent);
2602  }
2603  }
2604 
2605 #else /* Non LFN configuration */
2606  res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
2607 
2608 #endif
2609 
2610  /* Set SFN entry */
2611  if (res == FR_OK) {
2612  res = move_window(fs, dp->sect);
2613  if (res == FR_OK) {
2614  mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */
2615  mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */
2616 #if FF_USE_LFN
2617  dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
2618 #endif
2619  fs->wflag = 1;
2620  }
2621  }
2622 
2623  return res;
2624 }
2625 
2626 #endif /* !FF_FS_READONLY */
2627 
2628 
2629 
2630 #if !FF_FS_READONLY && FF_FS_MINIMIZE == 0
2631 /*-----------------------------------------------------------------------*/
2632 /* Remove an object from the directory */
2633 /*-----------------------------------------------------------------------*/
2634 
2635 static FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
2636  DIR* dp /* Directory object pointing the entry to be removed */
2637 )
2638 {
2639  FRESULT res;
2640  FATFS *fs = dp->obj.fs;
2641 #if FF_USE_LFN /* LFN configuration */
2642  DWORD last = dp->dptr;
2643 
2644  res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */
2645  if (res == FR_OK) {
2646  do {
2647  res = move_window(fs, dp->sect);
2648  if (res != FR_OK) break;
2649  if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
2650  dp->dir[XDIR_Type] &= 0x7F; /* Clear the entry InUse flag. */
2651  } else { /* On the FAT/FAT32 volume */
2652  dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted'. */
2653  }
2654  fs->wflag = 1;
2655  if (dp->dptr >= last) break; /* If reached last entry then all entries of the object has been deleted. */
2656  res = dir_next(dp, 0); /* Next entry */
2657  } while (res == FR_OK);
2658  if (res == FR_NO_FILE) res = FR_INT_ERR;
2659  }
2660 #else /* Non LFN configuration */
2661 
2662  res = move_window(fs, dp->sect);
2663  if (res == FR_OK) {
2664  dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted'.*/
2665  fs->wflag = 1;
2666  }
2667 #endif
2668 
2669  return res;
2670 }
2671 
2672 #endif /* !FF_FS_READONLY && FF_FS_MINIMIZE == 0 */
2673 
2674 
2675 
2676 #if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2
2677 /*-----------------------------------------------------------------------*/
2678 /* Get file information from directory entry */
2679 /*-----------------------------------------------------------------------*/
2680 
2681 static void get_fileinfo (
2682  DIR* dp, /* Pointer to the directory object */
2683  FILINFO* fno /* Pointer to the file information to be filled */
2684 )
2685 {
2686  UINT si, di;
2687 #if FF_USE_LFN
2688  BYTE lcf;
2689  WCHAR wc, hs;
2690  FATFS *fs = dp->obj.fs;
2691 #else
2692  TCHAR c;
2693 #endif
2694 
2695 
2696  fno->fname[0] = 0; /* Invaidate file info */
2697  if (dp->sect == 0) return; /* Exit if read pointer has reached end of directory */
2698 
2699 #if FF_USE_LFN /* LFN configuration */
2700 #if FF_FS_EXFAT
2701  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
2702  get_xfileinfo(fs->dirbuf, fno);
2703  return;
2704  } else
2705 #endif
2706  { /* On the FAT/FAT32 volume */
2707  if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */
2708  si = di = hs = 0;
2709  while (fs->lfnbuf[si] != 0) {
2710  wc = fs->lfnbuf[si++]; /* Get an LFN character (UTF-16) */
2711  if (hs == 0 && IsSurrogate(wc)) { /* Is it a surrogate? */
2712  hs = wc; continue; /* Get low surrogate */
2713  }
2714  wc = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di); /* Store it in UTF-16 or UTF-8 encoding */
2715  if (wc == 0) { di = 0; break; } /* Invalid char or buffer overflow? */
2716  di += wc;
2717  hs = 0;
2718  }
2719  if (hs != 0) di = 0; /* Broken surrogate pair? */
2720  fno->fname[di] = 0; /* Terminate the LFN (null string means LFN is invalid) */
2721  }
2722  }
2723 
2724  si = di = 0;
2725  while (si < 11) { /* Get SFN from SFN entry */
2726  wc = dp->dir[si++]; /* Get a char */
2727  if (wc == ' ') continue; /* Skip padding spaces */
2728  if (wc == RDDEM) wc = DDEM; /* Restore replaced DDEM character */
2729  if (si == 9 && di < FF_SFN_BUF) fno->altname[di++] = '.'; /* Insert a . if extension is exist */
2730 #if FF_LFN_UNICODE >= 1 /* Unicode output */
2731  if (dbc_1st((BYTE)wc) && si != 8 && si != 11 && dbc_2nd(dp->dir[si])) { /* Make a DBC if needed */
2732  wc = wc << 8 | dp->dir[si++];
2733  }
2734  wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM -> Unicode */
2735  if (wc == 0) { di = 0; break; } /* Wrong char in the current code page? */
2736  wc = put_utf(wc, &fno->altname[di], FF_SFN_BUF - di); /* Store it in Unicode */
2737  if (wc == 0) { di = 0; break; } /* Buffer overflow? */
2738  di += wc;
2739 #else /* ANSI/OEM output */
2740  fno->altname[di++] = (TCHAR)wc; /* Store it without any conversion */
2741 #endif
2742  }
2743  fno->altname[di] = 0; /* Terminate the SFN (null string means SFN is invalid) */
2744 
2745  if (fno->fname[0] == 0) { /* If LFN is invalid, altname[] needs to be copied to fname[] */
2746  if (di == 0) { /* If LFN and SFN both are invalid, this object is inaccesible */
2747  fno->fname[di++] = '?';
2748  } else {
2749  for (si = di = 0, lcf = NS_BODY; fno->altname[si]; si++, di++) { /* Copy altname[] to fname[] with case information */
2750  wc = (WCHAR)fno->altname[si];
2751  if (wc == '.') lcf = NS_EXT;
2752  if (IsUpper(wc) && (dp->dir[DIR_NTres] & lcf)) wc += 0x20;
2753  fno->fname[di] = (TCHAR)wc;
2754  }
2755  }
2756  fno->fname[di] = 0; /* Terminate the LFN */
2757  if (!dp->dir[DIR_NTres]) fno->altname[0] = 0; /* Altname is not needed if neither LFN nor case info is exist. */
2758  }
2759 
2760 #else /* Non-LFN configuration */
2761  si = di = 0;
2762  while (si < 11) { /* Copy name body and extension */
2763  c = (TCHAR)dp->dir[si++];
2764  if (c == ' ') continue; /* Skip padding spaces */
2765  if (c == RDDEM) c = DDEM; /* Restore replaced DDEM character */
2766  if (si == 9) fno->fname[di++] = '.';/* Insert a . if extension is exist */
2767  fno->fname[di++] = c;
2768  }
2769  fno->fname[di] = 0;
2770 #endif
2771 
2772  fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */
2773  fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */
2774  fno->ftime = ld_word(dp->dir + DIR_ModTime + 0); /* Time */
2775  fno->fdate = ld_word(dp->dir + DIR_ModTime + 2); /* Date */
2776 }
2777 
2778 #endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */
2779 
2780 
2781 
2782 #if FF_USE_FIND && FF_FS_MINIMIZE <= 1
2783 /*-----------------------------------------------------------------------*/
2784 /* Pattern matching */
2785 /*-----------------------------------------------------------------------*/
2786 
2787 static DWORD get_achar ( /* Get a character and advances ptr */
2788  const TCHAR** ptr /* Pointer to pointer to the ANSI/OEM or Unicode string */
2789 )
2790 {
2791  DWORD chr;
2792 
2793 
2794 #if FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode input */
2795  chr = tchar2uni(ptr);
2796  if (chr == 0xFFFFFFFF) chr = 0; /* Wrong UTF encoding is recognized as end of the string */
2797  chr = ff_wtoupper(chr);
2798 
2799 #else /* ANSI/OEM input */
2800  chr = (BYTE)*(*ptr)++; /* Get a byte */
2801  if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
2802 #if FF_CODE_PAGE == 0
2803  if (ExCvt && chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
2804 #elif FF_CODE_PAGE < 900
2805  if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
2806 #endif
2807 #if FF_CODE_PAGE == 0 || FF_CODE_PAGE >= 900
2808  if (dbc_1st((BYTE)chr)) { /* Get DBC 2nd byte if needed */
2809  chr = dbc_2nd((BYTE)**ptr) ? chr << 8 | (BYTE)*(*ptr)++ : 0;
2810  }
2811 #endif
2812 
2813 #endif
2814  return chr;
2815 }
2816 
2817 
2818 static int pattern_matching ( /* 0:not matched, 1:matched */
2819  const TCHAR* pat, /* Matching pattern */
2820  const TCHAR* nam, /* String to be tested */
2821  int skip, /* Number of pre-skip chars (number of ?s) */
2822  int inf /* Infinite search (* specified) */
2823 )
2824 {
2825  const TCHAR *pp, *np;
2826  DWORD pc, nc;
2827  int nm, nx;
2828 
2829 
2830  while (skip--) { /* Pre-skip name chars */
2831  if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
2832  }
2833  if (*pat == 0 && inf) return 1; /* (short circuit) */
2834 
2835  do {
2836  pp = pat; np = nam; /* Top of pattern and name to match */
2837  for (;;) {
2838  if (*pp == '?' || *pp == '*') { /* Wildcard? */
2839  nm = nx = 0;
2840  do { /* Analyze the wildcard block */
2841  if (*pp++ == '?') nm++; else nx = 1;
2842  } while (*pp == '?' || *pp == '*');
2843  if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
2844  nc = *np; break; /* Branch mismatched */
2845  }
2846  pc = get_achar(&pp); /* Get a pattern char */
2847  nc = get_achar(&np); /* Get a name char */
2848  if (pc != nc) break; /* Branch mismatched? */
2849  if (pc == 0) return 1; /* Branch matched? (matched at end of both strings) */
2850  }
2851  get_achar(&nam); /* nam++ */
2852  } while (inf && nc); /* Retry until end of name if infinite search is specified */
2853 
2854  return 0;
2855 }
2856 
2857 #endif /* FF_USE_FIND && FF_FS_MINIMIZE <= 1 */
2858 
2859 
2860 
2861 /*-----------------------------------------------------------------------*/
2862 /* Pick a top segment and create the object name in directory form */
2863 /*-----------------------------------------------------------------------*/
2864 
2865 static FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
2866  DIR* dp, /* Pointer to the directory object */
2867  const TCHAR** path /* Pointer to pointer to the segment in the path string */
2868 )
2869 {
2870 #if FF_USE_LFN /* LFN configuration */
2871  BYTE b, cf;
2872  WCHAR wc, *lfn;
2873  DWORD uc;
2874  UINT i, ni, si, di;
2875  const TCHAR *p;
2876 
2877 
2878  /* Create LFN into LFN working buffer */
2879  p = *path; lfn = dp->obj.fs->lfnbuf; di = 0;
2880  for (;;) {
2881  uc = tchar2uni(&p); /* Get a character */
2882  if (uc == 0xFFFFFFFF) return FR_INVALID_NAME; /* Invalid code or UTF decode error */
2883  if (uc >= 0x10000) lfn[di++] = (WCHAR)(uc >> 16); /* Store high surrogate if needed */
2884  wc = (WCHAR)uc;
2885  if (wc < ' ' || wc == '/' || wc == '\\') break; /* Break if end of the path or a separator is found */
2886  if (wc < 0x80 && chk_chr("\"*:<>\?|\x7F", wc)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */
2887  if (di >= FF_MAX_LFN) return FR_INVALID_NAME; /* Reject too long name */
2888  lfn[di++] = wc; /* Store the Unicode character */
2889  }
2890  if (wc < ' ') { /* End of path? */
2891  cf = NS_LAST; /* Set last segment flag */
2892  } else {
2893  cf = 0; /* Next segment follows */
2894  while (*p == '/' || *p == '\\') p++; /* Skip duplicated separators if exist */
2895  }
2896  *path = p; /* Return pointer to the next segment */
2897 
2898 #if FF_FS_RPATH != 0
2899  if ((di == 1 && lfn[di - 1] == '.') ||
2900  (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */
2901  lfn[di] = 0;
2902  for (i = 0; i < 11; i++) { /* Create dot name for SFN entry */
2903  dp->fn[i] = (i < di) ? '.' : ' ';
2904  }
2905  dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
2906  return FR_OK;
2907  }
2908 #endif
2909  while (di) { /* Snip off trailing spaces and dots if exist */
2910  wc = lfn[di - 1];
2911  if (wc != ' ' && wc != '.') break;
2912  di--;
2913  }
2914  lfn[di] = 0; /* LFN is created into the working buffer */
2915  if (di == 0) return FR_INVALID_NAME; /* Reject null name */
2916 
2917  /* Create SFN in directory form */
2918  for (si = 0; lfn[si] == ' '; si++) ; /* Remove leading spaces */
2919  if (si > 0 || lfn[si] == '.') cf |= NS_LOSS | NS_LFN; /* Is there any leading space or dot? */
2920  while (di > 0 && lfn[di - 1] != '.') di--; /* Find last dot (di<=si: no extension) */
2921 
2922  mem_set(dp->fn, ' ', 11);
2923  i = b = 0; ni = 8;
2924  for (;;) {
2925  wc = lfn[si++]; /* Get an LFN character */
2926  if (wc == 0) break; /* Break on end of the LFN */
2927  if (wc == ' ' || (wc == '.' && si != di)) { /* Remove embedded spaces and dots */
2928  cf |= NS_LOSS | NS_LFN;
2929  continue;
2930  }
2931 
2932  if (i >= ni || si == di) { /* End of field? */
2933  if (ni == 11) { /* Name extension overflow? */
2934  cf |= NS_LOSS | NS_LFN;
2935  break;
2936  }
2937  if (si != di) cf |= NS_LOSS | NS_LFN; /* Name body overflow? */
2938  if (si > di) break; /* No name extension? */
2939  si = di; i = 8; ni = 11; b <<= 2; /* Enter name extension */
2940  continue;
2941  }
2942 
2943  if (wc >= 0x80) { /* Is this a non-ASCII character? */
2944  cf |= NS_LFN; /* LFN entry needs to be created */
2945 #if FF_CODE_PAGE == 0
2946  if (ExCvt) { /* At SBCS */
2947  wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */
2948  if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */
2949  } else { /* At DBCS */
2950  wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Upper convert ==> ANSI/OEM code */
2951  }
2952 #elif FF_CODE_PAGE < 900 /* SBCS cfg */
2953  wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */
2954  if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */
2955 #else /* DBCS cfg */
2956  wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Upper convert ==> ANSI/OEM code */
2957 #endif
2958  }
2959 
2960  if (wc >= 0x100) { /* Is this a DBC? */
2961  if (i >= ni - 1) { /* Field overflow? */
2962  cf |= NS_LOSS | NS_LFN;
2963  i = ni; continue; /* Next field */
2964  }
2965  dp->fn[i++] = (BYTE)(wc >> 8); /* Put 1st byte */
2966  } else { /* SBC */
2967  if (wc == 0 || chk_chr("+,;=[]", wc)) { /* Replace illegal characters for SFN if needed */
2968  wc = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
2969  } else {
2970  if (IsUpper(wc)) { /* ASCII upper case? */
2971  b |= 2;
2972  }
2973  if (IsLower(wc)) { /* ASCII lower case? */
2974  b |= 1; wc -= 0x20;
2975  }
2976  }
2977  }
2978  dp->fn[i++] = (BYTE)wc;
2979  }
2980 
2981  if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
2982 
2983  if (ni == 8) b <<= 2; /* Shift capital flags if no extension */
2984  if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* LFN entry needs to be created if composite capitals */
2985  if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
2986  if (b & 0x01) cf |= NS_EXT; /* NT flag (Extension has small capital letters only) */
2987  if (b & 0x04) cf |= NS_BODY; /* NT flag (Body has small capital letters only) */
2988  }
2989 
2990  dp->fn[NSFLAG] = cf; /* SFN is created into dp->fn[] */
2991 
2992  return FR_OK;
2993 
2994 
2995 #else /* FF_USE_LFN : Non-LFN configuration */
2996  BYTE c, d, *sfn;
2997  UINT ni, si, i;
2998  const char *p;
2999 
3000  /* Create file name in directory form */
3001  p = *path; sfn = dp->fn;
3002  mem_set(sfn, ' ', 11);
3003  si = i = 0; ni = 8;
3004 #if FF_FS_RPATH != 0
3005  if (p[si] == '.') { /* Is this a dot entry? */
3006  for (;;) {
3007  c = (BYTE)p[si++];
3008  if (c != '.' || si >= 3) break;
3009  sfn[i++] = c;
3010  }
3011  if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
3012  *path = p + si; /* Return pointer to the next segment */
3013  sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */
3014  return FR_OK;
3015  }
3016 #endif
3017  for (;;) {
3018  c = (BYTE)p[si++]; /* Get a byte */
3019  if (c <= ' ') break; /* Break if end of the path name */
3020  if (c == '/' || c == '\\') { /* Break if a separator is found */
3021  while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
3022  break;
3023  }
3024  if (c == '.' || i >= ni) { /* End of body or field overflow? */
3025  if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Field overflow or invalid dot? */
3026  i = 8; ni = 11; /* Enter file extension field */
3027  continue;
3028  }
3029 #if FF_CODE_PAGE == 0
3030  if (ExCvt && c >= 0x80) { /* Is SBC extended character? */
3031  c = ExCvt[c & 0x7F]; /* To upper SBC extended character */
3032  }
3033 #elif FF_CODE_PAGE < 900
3034  if (c >= 0x80) { /* Is SBC extended character? */
3035  c = ExCvt[c & 0x7F]; /* To upper SBC extended character */
3036  }
3037 #endif
3038  if (dbc_1st(c)) { /* Check if it is a DBC 1st byte */
3039  d = (BYTE)p[si++]; /* Get 2nd byte */
3040  if (!dbc_2nd(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */
3041  sfn[i++] = c;
3042  sfn[i++] = d;
3043  } else { /* SBC */
3044  if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */
3045  if (IsLower(c)) c -= 0x20; /* To upper */
3046  sfn[i++] = c;
3047  }
3048  }
3049  *path = p + si; /* Return pointer to the next segment */
3050  if (i == 0) return FR_INVALID_NAME; /* Reject nul string */
3051 
3052  if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
3053  sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */
3054 
3055  return FR_OK;
3056 #endif /* FF_USE_LFN */
3057 }
3058 
3059 
3060 
3061 
3062 /*-----------------------------------------------------------------------*/
3063 /* Follow a file path */
3064 /*-----------------------------------------------------------------------*/
3065 
3066 static FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
3067  DIR* dp, /* Directory object to return last directory and found object */
3068  const TCHAR* path /* Full-path string to find a file or directory */
3069 )
3070 {
3071  FRESULT res;
3072  BYTE ns;
3073  FATFS *fs = dp->obj.fs;
3074 
3075 
3076 #if FF_FS_RPATH != 0
3077  if (*path != '/' && *path != '\\') { /* Without heading separator */
3078  dp->obj.sclust = fs->cdir; /* Start from current directory */
3079  } else
3080 #endif
3081  { /* With heading separator */
3082  while (*path == '/' || *path == '\\') path++; /* Strip heading separator */
3083  dp->obj.sclust = 0; /* Start from root directory */
3084  }
3085 #if FF_FS_EXFAT
3086  dp->obj.n_frag = 0; /* Invalidate last fragment counter of the object */
3087 #if FF_FS_RPATH != 0
3088  if (fs->fs_type == FS_EXFAT && dp->obj.sclust) { /* exFAT: Retrieve the sub-directory's status */
3089  DIR dj;
3090 
3091  dp->obj.c_scl = fs->cdc_scl;
3092  dp->obj.c_size = fs->cdc_size;
3093  dp->obj.c_ofs = fs->cdc_ofs;
3094  res = load_obj_xdir(&dj, &dp->obj);
3095  if (res != FR_OK) return res;
3096  dp->obj.objsize = ld_dword(fs->dirbuf + XDIR_FileSize);
3097  dp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
3098  }
3099 #endif
3100 #endif
3101 
3102  if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */
3103  dp->fn[NSFLAG] = NS_NONAME;
3104  res = dir_sdi(dp, 0);
3105 
3106  } else { /* Follow path */
3107  for (;;) {
3108  res = create_name(dp, &path); /* Get a segment name of the path */
3109  if (res != FR_OK) break;
3110  res = dir_find(dp); /* Find an object with the segment name */
3111  ns = dp->fn[NSFLAG];
3112  if (res != FR_OK) { /* Failed to find the object */
3113  if (res == FR_NO_FILE) { /* Object is not found */
3114  if (FF_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, stay there */
3115  if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
3116  dp->fn[NSFLAG] = NS_NONAME;
3117  res = FR_OK;
3118  } else { /* Could not find the object */
3119  if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
3120  }
3121  }
3122  break;
3123  }
3124  if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
3125  /* Get into the sub-directory */
3126  if (!(dp->obj.attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */
3127  res = FR_NO_PATH; break;
3128  }
3129 #if FF_FS_EXFAT
3130  if (fs->fs_type == FS_EXFAT) { /* Save containing directory information for next dir */
3131  dp->obj.c_scl = dp->obj.sclust;
3132  dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat;
3133  dp->obj.c_ofs = dp->blk_ofs;
3134  init_alloc_info(fs, &dp->obj); /* Open next directory */
3135  } else
3136 #endif
3137  {
3138  dp->obj.sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */
3139  }
3140  }
3141  }
3142 
3143  return res;
3144 }
3145 
3146 
3147 
3148 
3149 /*-----------------------------------------------------------------------*/
3150 /* Get logical drive number from path name */
3151 /*-----------------------------------------------------------------------*/
3152 
3153 static int get_ldnumber ( /* Returns logical drive number (-1:invalid drive number or null pointer) */
3154  const TCHAR** path /* Pointer to pointer to the path name */
3155 )
3156 {
3157  const TCHAR *tp, *tt;
3158  TCHAR tc;
3159  int i, vol = -1;
3160 #if FF_STR_VOLUME_ID /* Find string volume ID */
3161  const char *sp;
3162  char c;
3163 #endif
3164 
3165  tt = tp = *path;
3166  if (!tp) return vol; /* Invalid path name? */
3167  do tc = *tt++; while ((UINT)tc >= (FF_USE_LFN ? ' ' : '!') && tc != ':'); /* Find a colon in the path */
3168 
3169  if (tc == ':') { /* DOS/Windows style volume ID? */
3170  i = FF_VOLUMES;
3171  if (IsDigit(*tp) && tp + 2 == tt) { /* Is there a numeric volume ID + colon? */
3172  i = (int)*tp - '0'; /* Get the LD number */
3173  }
3174 #if FF_STR_VOLUME_ID == 1 /* Arbitrary string is enabled */
3175  else {
3176  i = 0;
3177  do {
3178  sp = VolumeStr[i]; tp = *path; /* This string volume ID and path name */
3179  do { /* Compare the volume ID with path name */
3180  c = *sp++; tc = *tp++;
3181  if (IsLower(c)) c -= 0x20;
3182  if (IsLower(tc)) tc -= 0x20;
3183  } while (c && (TCHAR)c == tc);
3184  } while ((c || tp != tt) && ++i < FF_VOLUMES); /* Repeat for each id until pattern match */
3185  }
3186 #endif
3187  if (i < FF_VOLUMES) { /* If a volume ID is found, get the drive number and strip it */
3188  vol = i; /* Drive number */
3189  *path = tt; /* Snip the drive prefix off */
3190  }
3191  return vol;
3192  }
3193 #if FF_STR_VOLUME_ID == 2 /* Unix style volume ID is enabled */
3194  if (*tp == '/') {
3195  i = 0;
3196  do {
3197  sp = VolumeStr[i]; tp = *path; /* This string volume ID and path name */
3198  do { /* Compare the volume ID with path name */
3199  c = *sp++; tc = *(++tp);
3200  if (IsLower(c)) c -= 0x20;
3201  if (IsLower(tc)) tc -= 0x20;
3202  } while (c && (TCHAR)c == tc);
3203  } while ((c || (tc != '/' && (UINT)tc >= (FF_USE_LFN ? ' ' : '!'))) && ++i < FF_VOLUMES); /* Repeat for each ID until pattern match */
3204  if (i < FF_VOLUMES) { /* If a volume ID is found, get the drive number and strip it */
3205  vol = i; /* Drive number */
3206  *path = tp; /* Snip the drive prefix off */
3207  return vol;
3208  }
3209  }
3210 #endif
3211  /* No drive prefix is found */
3212 #if FF_FS_RPATH != 0
3213  vol = CurrVol; /* Default drive is current drive */
3214 #else
3215  vol = 0; /* Default drive is 0 */
3216 #endif
3217  return vol; /* Return the default drive */
3218 }
3219 
3220 
3221 
3222 
3223 /*-----------------------------------------------------------------------*/
3224 /* GPT support functions */
3225 /*-----------------------------------------------------------------------*/
3226 
3227 #if FF_LBA64
3228 
3229 /* Calculate CRC32 in byte-by-byte */
3230 
3231 static DWORD crc32 ( /* Returns next CRC value */
3232  DWORD crc, /* Current CRC value */
3233  BYTE d /* A byte to be processed */
3234 )
3235 {
3236  BYTE b;
3237 
3238 
3239  for (b = 1; b; b <<= 1) {
3240  crc ^= (d & b) ? 1 : 0;
3241  crc = (crc & 1) ? crc >> 1 ^ 0xEDB88320 : crc >> 1;
3242  }
3243  return crc;
3244 }
3245 
3246 
3247 /* Check validity of GPT header */
3248 
3249 static int test_gpt_header ( /* 0:Invalid, 1:Valid */
3250  const BYTE* gpth /* Pointer to the GPT header */
3251 )
3252 {
3253  UINT i;
3254  DWORD bcc;
3255 
3256 
3257  if (mem_cmp(gpth + GPTH_Sign, "EFI PART" "\0\0\1\0" "\x5C\0\0", 16)) return 0; /* Check sign, version (1.0) and length (92) */
3258  for (i = 0, bcc = 0xFFFFFFFF; i < 92; i++) { /* Check header BCC */
3259  bcc = crc32(bcc, i - GPTH_Bcc < 4 ? 0 : gpth[i]);
3260  }
3261  if (~bcc != ld_dword(gpth + GPTH_Bcc)) return 0;
3262  if (ld_dword(gpth + GPTH_PteSize) != SZ_GPTE) return 0; /* Table entry size (must be SZ_GPTE bytes) */
3263  if (ld_dword(gpth + GPTH_PtNum) > 128) return 0; /* Table size (must be 128 entries or less) */
3264 
3265  return 1;
3266 }
3267 
3268 #if !FF_FS_READONLY && FF_USE_MKFS
3269 
3270 /* Generate random value */
3271 static DWORD make_rand (
3272  DWORD seed, /* Seed value */
3273  BYTE* buff, /* Output buffer */
3274  UINT n /* Data length */
3275 )
3276 {
3277  UINT r;
3278 
3279 
3280  if (seed == 0) seed = 1;
3281  do {
3282  for (r = 0; r < 8; r++) seed = seed & 1 ? seed >> 1 ^ 0xA3000000 : seed >> 1; /* Shift 8 bits the 32-bit LFSR */
3283  *buff++ = (BYTE)seed;
3284  } while (--n);
3285  return seed;
3286 }
3287 
3288 #endif
3289 #endif
3290 
3291 
3292 
3293 /*-----------------------------------------------------------------------*/
3294 /* Load a sector and check if it is an FAT VBR */
3295 /*-----------------------------------------------------------------------*/
3296 
3297 /* Check what the sector is */
3298 
3299 static UINT check_fs ( /* 0:FAT VBR, 1:exFAT VBR, 2:Valid BS but not FAT, 3:Invalid BS, 4:Disk error */
3300  FATFS* fs, /* Filesystem object */
3301  LBA_t sect /* Sector to load and check if it is an FAT-VBR or not */
3302 )
3303 {
3304  fs->wflag = 0; fs->winsect = (LBA_t)0 - 1; /* Invaidate window */
3305  if (move_window(fs, sect) != FR_OK) return 4; /* Load the boot sector */
3306 
3307  if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot signature (always here regardless of the sector size) */
3308 
3309  if (FF_FS_EXFAT && !mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1; /* Check if exFAT VBR */
3310 
3311  if (fs->win[BS_JmpBoot] == 0xE9 || fs->win[BS_JmpBoot] == 0xEB || fs->win[BS_JmpBoot] == 0xE8) { /* Valid JumpBoot code? */
3312  if (!mem_cmp(fs->win + BS_FilSysType, "FAT", 3)) return 0; /* Is it an FAT VBR? */
3313  if (!mem_cmp(fs->win + BS_FilSysType32, "FAT32", 5)) return 0; /* Is it an FAT32 VBR? */
3314  }
3315  return 2; /* Valid BS but not FAT */
3316 }
3317 
3318 
3319 /* Find an FAT volume */
3320 /* (It supports only generic partitioning rules, MBR, GPT and SFD) */
3321 
3322 static UINT find_volume ( /* Returns BS status found in the hosting drive */
3323  FATFS* fs, /* Filesystem object */
3324  UINT part /* Partition to fined = 0:auto, 1..:forced */
3325 )
3326 {
3327  UINT fmt, i;
3328  DWORD mbr_pt[4];
3329 
3330 
3331  fmt = check_fs(fs, 0); /* Load sector 0 and check if it is an FAT VBR as SFD */
3332  if (fmt != 2 && (fmt >= 3 || part == 0)) return fmt; /* Returns if it is a FAT VBR as auto scan, not a BS or disk error */
3333 
3334  /* Sector 0 is not an FAT VBR or forced partition number wants a partition */
3335 
3336 #if FF_LBA64
3337  if (fs->win[MBR_Table + PTE_System] == 0xEE) { /* GPT protective MBR? */
3338  DWORD n_ent, v_ent, ofs;
3339  QWORD pt_lba;
3340 
3341  if (move_window(fs, 1) != FR_OK) return 4; /* Load GPT header sector (next to MBR) */
3342  if (!test_gpt_header(fs->win)) return 3; /* Check if GPT header is valid */
3343  n_ent = ld_dword(fs->win + GPTH_PtNum); /* Number of entries */
3344  pt_lba = ld_qword(fs->win + GPTH_PtOfs); /* Table location */
3345  for (v_ent = i = 0; i < n_ent; i++) { /* Find FAT partition */
3346  if (move_window(fs, pt_lba + i * SZ_GPTE / SS(fs)) != FR_OK) return 4; /* PT sector */
3347  ofs = i * SZ_GPTE % SS(fs); /* Offset in the sector */
3348  if (!mem_cmp(fs->win + ofs + GPTE_PtGuid, GUID_MS_Basic, 16)) { /* MS basic data partition? */
3349  v_ent++;
3350  fmt = check_fs(fs, ld_qword(fs->win + ofs + GPTE_FstLba)); /* Load VBR and check status */
3351  if (part == 0 && fmt <= 1) return fmt; /* Auto search (valid FAT volume found first) */
3352  if (part != 0 && v_ent == part) return fmt; /* Forced partition order (regardless of it is valid or not) */
3353  }
3354  }
3355  return 3; /* Not found */
3356  }
3357 #endif
3358  if (FF_MULTI_PARTITION && part > 4) return 3; /* MBR has 4 partitions max */
3359  for (i = 0; i < 4; i++) { /* Load partition offset in the MBR */
3360  mbr_pt[i] = ld_dword(fs->win + MBR_Table + i * SZ_PTE + PTE_StLba);
3361  }
3362  i = part ? part - 1 : 0; /* Table index to find first */
3363  do { /* Find an FAT volume */
3364  fmt = mbr_pt[i] ? check_fs(fs, mbr_pt[i]) : 3; /* Check if the partition is FAT */
3365  } while (part == 0 && fmt >= 2 && ++i < 4);
3366  return fmt;
3367 }
3368 
3369 
3370 
3371 
3372 /*-----------------------------------------------------------------------*/
3373 /* Determine logical drive number and mount the volume if needed */
3374 /*-----------------------------------------------------------------------*/
3375 
3376 static FRESULT mount_volume ( /* FR_OK(0): successful, !=0: an error occurred */
3377  const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
3378  FATFS** rfs, /* Pointer to pointer to the found filesystem object */
3379  BYTE mode /* !=0: Check write protection for write access */
3380 )
3381 {
3382  int vol;
3383  DSTATUS stat;
3384  LBA_t bsect;
3385  DWORD tsect, sysect, fasize, nclst, szbfat;
3386  WORD nrsv;
3387  FATFS *fs;
3388  UINT fmt;
3389 
3390 
3391  /* Get logical drive number */
3392  *rfs = 0;
3393  vol = get_ldnumber(path);
3394  if (vol < 0) return FR_INVALID_DRIVE;
3395 
3396  /* Check if the filesystem object is valid or not */
3397  fs = FatFs[vol]; /* Get pointer to the filesystem object */
3398  if (!fs) return FR_NOT_ENABLED; /* Is the filesystem object available? */
3399 #if FF_FS_REENTRANT
3400  if (!lock_fs(fs)) return FR_TIMEOUT; /* Lock the volume */
3401 #endif
3402  *rfs = fs; /* Return pointer to the filesystem object */
3403 
3404  mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */
3405  if (fs->fs_type != 0) { /* If the volume has been mounted */
3406  stat = disk_status(fs->pdrv);
3407  if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
3408  if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check write protection if needed */
3409  return FR_WRITE_PROTECTED;
3410  }
3411  return FR_OK; /* The filesystem object is already valid */
3412  }
3413  }
3414 
3415  /* The filesystem object is not valid. */
3416  /* Following code attempts to mount the volume. (find a FAT volume, analyze the BPB and initialize the filesystem object) */
3417 
3418  fs->fs_type = 0; /* Clear the filesystem object */
3419  fs->pdrv = LD2PD(vol); /* Volume hosting physical drive */
3420  stat = disk_initialize(fs->pdrv); /* Initialize the physical drive */
3421  if (stat & STA_NOINIT) { /* Check if the initialization succeeded */
3422  return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
3423  }
3424  if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */
3425  return FR_WRITE_PROTECTED;
3426  }
3427 #if FF_MAX_SS != FF_MIN_SS /* Get sector size (multiple sector size cfg only) */
3428  if (disk_ioctl(fs->pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR;
3429  if (SS(fs) > FF_MAX_SS || SS(fs) < FF_MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR;
3430 #endif
3431 
3432  /* Find an FAT volume on the drive */
3433  fmt = find_volume(fs, LD2PT(vol));
3434  if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
3435  if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */
3436  bsect = fs->winsect; /* Volume location */
3437 
3438  /* An FAT volume is found (bsect). Following code initializes the filesystem object */
3439 
3440 #if FF_FS_EXFAT
3441  if (fmt == 1) {
3442  QWORD maxlba;
3443  DWORD so, cv, bcl, i;
3444 
3445  for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */
3446  if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;
3447 
3448  if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT version (must be version 1.0) */
3449 
3450  if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) { /* (BPB_BytsPerSecEx must be equal to the physical sector size) */
3451  return FR_NO_FILESYSTEM;
3452  }
3453 
3454  maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */
3455  if (!FF_LBA64 && maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */
3456 
3457  fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */
3458 
3459  fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */
3460  if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */
3461 
3462  fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */
3463  if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */
3464 
3465  nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */
3466  if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */
3467  fs->n_fatent = nclst + 2;
3468 
3469  /* Boundaries and Limits */
3470  fs->volbase = bsect;
3471  fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);
3472  fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);
3473  if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */
3474  fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);
3475 
3476  /* Get bitmap location and check if it is contiguous (implementation assumption) */
3477  so = i = 0;
3478  for (;;) { /* Find the bitmap entry in the root directory (in only first cluster) */
3479  if (i == 0) {
3480  if (so >= fs->csize) return FR_NO_FILESYSTEM; /* Not found? */
3481  if (move_window(fs, clst2sect(fs, (DWORD)fs->dirbase) + so) != FR_OK) return FR_DISK_ERR;
3482  so++;
3483  }
3484  if (fs->win[i] == ET_BITMAP) break; /* Is it a bitmap entry? */
3485  i = (i + SZDIRE) % SS(fs); /* Next entry */
3486  }
3487  bcl = ld_dword(fs->win + i + 20); /* Bitmap cluster */
3488  if (bcl < 2 || bcl >= fs->n_fatent) return FR_NO_FILESYSTEM;
3489  fs->bitbase = fs->database + fs->csize * (bcl - 2); /* Bitmap sector */
3490  for (;;) { /* Check if bitmap is contiguous */
3491  if (move_window(fs, fs->fatbase + bcl / (SS(fs) / 4)) != FR_OK) return FR_DISK_ERR;
3492  cv = ld_dword(fs->win + bcl % (SS(fs) / 4) * 4);
3493  if (cv == 0xFFFFFFFF) break; /* Last link? */
3494  if (cv != ++bcl) return FR_NO_FILESYSTEM; /* Fragmented? */
3495  }
3496 
3497 #if !FF_FS_READONLY
3498  fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
3499 #endif
3500  fmt = FS_EXFAT; /* FAT sub-type */
3501  } else
3502 #endif /* FF_FS_EXFAT */
3503  {
3504  if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */
3505 
3506  fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
3507  if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);
3508  fs->fsize = fasize;
3509 
3510  fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */
3511  if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
3512  fasize *= fs->n_fats; /* Number of sectors for FAT area */
3513 
3514  fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */
3515  if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
3516 
3517  fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
3518  if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */
3519 
3520  tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
3521  if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);
3522 
3523  nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
3524  if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */
3525 
3526  /* Determine the FAT sub type */
3527  sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */
3528  if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
3529  nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
3530  if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
3531  fmt = 0;
3532  if (nclst <= MAX_FAT32) fmt = FS_FAT32;
3533  if (nclst <= MAX_FAT16) fmt = FS_FAT16;
3534  if (nclst <= MAX_FAT12) fmt = FS_FAT12;
3535  if (fmt == 0) return FR_NO_FILESYSTEM;
3536 
3537  /* Boundaries and Limits */
3538  fs->n_fatent = nclst + 2; /* Number of FAT entries */
3539  fs->volbase = bsect; /* Volume start sector */
3540  fs->fatbase = bsect + nrsv; /* FAT start sector */
3541  fs->database = bsect + sysect; /* Data start sector */
3542  if (fmt == FS_FAT32) {
3543  if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */
3544  if (fs->n_rootdir != 0) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
3545  fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */
3546  szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
3547  } else {
3548  if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
3549  fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
3550  szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
3551  fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
3552  }
3553  if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */
3554 
3555 #if !FF_FS_READONLY
3556  /* Get FSInfo if available */
3557  fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
3558  fs->fsi_flag = 0x80;
3559 #if (FF_FS_NOFSINFO & 3) != 3
3560  if (fmt == FS_FAT32 /* Allow to update FSInfo only if BPB_FSInfo32 == 1 */
3561  && ld_word(fs->win + BPB_FSInfo32) == 1
3562  && move_window(fs, bsect + 1) == FR_OK)
3563  {
3564  fs->fsi_flag = 0;
3565  if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSInfo data if available */
3566  && ld_dword(fs->win + FSI_LeadSig) == 0x41615252
3567  && ld_dword(fs->win + FSI_StrucSig) == 0x61417272)
3568  {
3569 #if (FF_FS_NOFSINFO & 1) == 0
3570  fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
3571 #endif
3572 #if (FF_FS_NOFSINFO & 2) == 0
3573  fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
3574 #endif
3575  }
3576  }
3577 #endif /* (FF_FS_NOFSINFO & 3) != 3 */
3578 #endif /* !FF_FS_READONLY */
3579  }
3580 
3581  fs->fs_type = (BYTE)fmt;/* FAT sub-type */
3582  fs->id = ++Fsid; /* Volume mount ID */
3583 #if FF_USE_LFN == 1
3584  fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
3585 #if FF_FS_EXFAT
3586  fs->dirbuf = DirBuf; /* Static directory block scratchpad buuffer */
3587 #endif
3588 #endif
3589 #if FF_FS_RPATH != 0
3590  fs->cdir = 0; /* Initialize current directory */
3591 #endif
3592 #if FF_FS_LOCK != 0 /* Clear file lock semaphores */
3593  clear_lock(fs);
3594 #endif
3595  return FR_OK;
3596 }
3597 
3598 
3599 
3600 
3601 /*-----------------------------------------------------------------------*/
3602 /* Check if the file/directory object is valid or not */
3603 /*-----------------------------------------------------------------------*/
3604 
3605 static FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */
3606  FFOBJID* obj, /* Pointer to the FFOBJID, the 1st member in the FIL/DIR object, to check validity */
3607  FATFS** rfs /* Pointer to pointer to the owner filesystem object to return */
3608 )
3609 {
3610  FRESULT res = FR_INVALID_OBJECT;
3611 
3612 
3613  if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) { /* Test if the object is valid */
3614 #if FF_FS_REENTRANT
3615  if (lock_fs(obj->fs)) { /* Obtain the filesystem object */
3616  if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */
3617  res = FR_OK;
3618  } else {
3619  unlock_fs(obj->fs, FR_OK);
3620  }
3621  } else {
3622  res = FR_TIMEOUT;
3623  }
3624 #else
3625  if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */
3626  res = FR_OK;
3627  }
3628 #endif
3629  }
3630  *rfs = (res == FR_OK) ? obj->fs : 0; /* Corresponding filesystem object */
3631  return res;
3632 }
3633 
3634 
3635 
3636 
3637 /*---------------------------------------------------------------------------
3638 
3639  Public Functions (FatFs API)
3640 
3641 ----------------------------------------------------------------------------*/
3642 
3643 
3644 
3645 /*-----------------------------------------------------------------------*/
3646 /* Mount/Unmount a Logical Drive */
3647 /*-----------------------------------------------------------------------*/
3648 
3649 FRESULT f_mount (
3650  FATFS* fs, /* Pointer to the filesystem object (NULL:unmount)*/
3651  const TCHAR* path, /* Logical drive number to be mounted/unmounted */
3652  BYTE opt /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */
3653 )
3654 {
3655  FATFS *cfs;
3656  int vol;
3657  FRESULT res;
3658  const TCHAR *rp = path;
3659 
3660 
3661  /* Get logical drive number */
3662  vol = get_ldnumber(&rp);
3663  if (vol < 0) return FR_INVALID_DRIVE;
3664  cfs = FatFs[vol]; /* Pointer to fs object */
3665 
3666  if (cfs) {
3667 #if FF_FS_LOCK != 0
3668  clear_lock(cfs);
3669 #endif
3670 #if FF_FS_REENTRANT /* Discard sync object of the current volume */
3671  if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
3672 #endif
3673  cfs->fs_type = 0; /* Clear old fs object */
3674  }
3675 
3676  if (fs) {
3677  fs->fs_type = 0; /* Clear new fs object */
3678 #if FF_FS_REENTRANT /* Create sync object for the new volume */
3679  if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
3680 #endif
3681  }
3682  FatFs[vol] = fs; /* Register new fs object */
3683 
3684  if (opt == 0) return FR_OK; /* Do not mount now, it will be mounted later */
3685 
3686  res = mount_volume(&path, &fs, 0); /* Force mounted the volume */
3687  LEAVE_FF(fs, res);
3688 }
3689 
3690 
3691 
3692 
3693 /*-----------------------------------------------------------------------*/
3694 /* Open or Create a File */
3695 /*-----------------------------------------------------------------------*/
3696 
3697 FRESULT f_open (
3698  FIL* fp, /* Pointer to the blank file object */
3699  const TCHAR* path, /* Pointer to the file name */
3700  BYTE mode /* Access mode and file open mode flags */
3701 )
3702 {
3703  FRESULT res;
3704  DIR dj;
3705  FATFS *fs;
3706 #if !FF_FS_READONLY
3707  DWORD cl, bcs, clst;
3708  LBA_t sc;
3709  FSIZE_t ofs;
3710 #endif
3711  DEF_NAMBUF
3712 
3713 
3714  if (!fp) return FR_INVALID_OBJECT;
3715 
3716  /* Get logical drive number */
3717  mode &= FF_FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND;
3718  res = mount_volume(&path, &fs, mode);
3719  if (res == FR_OK) {
3720  dj.obj.fs = fs;
3721  INIT_NAMBUF(fs);
3722  res = follow_path(&dj, path); /* Follow the file path */
3723 #if !FF_FS_READONLY /* Read/Write configuration */
3724  if (res == FR_OK) {
3725  if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
3726  res = FR_INVALID_NAME;
3727  }
3728 #if FF_FS_LOCK != 0
3729  else {
3730  res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); /* Check if the file can be used */
3731  }
3732 #endif
3733  }
3734  /* Create or Open a file */
3735  if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
3736  if (res != FR_OK) { /* No file, create new */
3737  if (res == FR_NO_FILE) { /* There is no file to open, create a new entry */
3738 #if FF_FS_LOCK != 0
3739  res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
3740 #else
3741  res = dir_register(&dj);
3742 #endif
3743  }
3744  mode |= FA_CREATE_ALWAYS; /* File is created */
3745  }
3746  else { /* Any object with the same name is already existing */
3747  if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
3748  res = FR_DENIED;
3749  } else {
3750  if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */
3751  }
3752  }
3753  if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate the file if overwrite mode */
3754 #if FF_FS_EXFAT
3755  if (fs->fs_type == FS_EXFAT) {
3756  /* Get current allocation info */
3757  fp->obj.fs = fs;
3758  init_alloc_info(fs, &fp->obj);
3759  /* Set directory entry block initial state */
3760  mem_set(fs->dirbuf + 2, 0, 30); /* Clear 85 entry except for NumSec */
3761  mem_set(fs->dirbuf + 38, 0, 26); /* Clear C0 entry except for NumName and NameHash */
3762  fs->dirbuf[XDIR_Attr] = AM_ARC;
3763  st_dword(fs->dirbuf + XDIR_CrtTime, GET_FATTIME());
3764  fs->dirbuf[XDIR_GenFlags] = 1;
3765  res = store_xdir(&dj);
3766  if (res == FR_OK && fp->obj.sclust != 0) { /* Remove the cluster chain if exist */
3767  res = remove_chain(&fp->obj, fp->obj.sclust, 0);
3768  fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */
3769  }
3770  } else
3771 #endif
3772  {
3773  /* Set directory entry initial state */
3774  cl = ld_clust(fs, dj.dir); /* Get current cluster chain */
3775  st_dword(dj.dir + DIR_CrtTime, GET_FATTIME()); /* Set created time */
3776  dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */
3777  st_clust(fs, dj.dir, 0); /* Reset file allocation info */
3778  st_dword(dj.dir + DIR_FileSize, 0);
3779  fs->wflag = 1;
3780  if (cl != 0) { /* Remove the cluster chain if exist */
3781  sc = fs->winsect;
3782  res = remove_chain(&dj.obj, cl, 0);
3783  if (res == FR_OK) {
3784  res = move_window(fs, sc);
3785  fs->last_clst = cl - 1; /* Reuse the cluster hole */
3786  }
3787  }
3788  }
3789  }
3790  }
3791  else { /* Open an existing file */
3792  if (res == FR_OK) { /* Is the object exsiting? */
3793  if (dj.obj.attr & AM_DIR) { /* File open against a directory */
3794  res = FR_NO_FILE;
3795  } else {
3796  if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* Write mode open against R/O file */
3797  res = FR_DENIED;
3798  }
3799  }
3800  }
3801  }
3802  if (res == FR_OK) {
3803  if (mode & FA_CREATE_ALWAYS) mode |= FA_MODIFIED; /* Set file change flag if created or overwritten */
3804  fp->dir_sect = fs->winsect; /* Pointer to the directory entry */
3805  fp->dir_ptr = dj.dir;
3806 #if FF_FS_LOCK != 0
3807  fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); /* Lock the file for this session */
3808  if (fp->obj.lockid == 0) res = FR_INT_ERR;
3809 #endif
3810  }
3811 #else /* R/O configuration */
3812  if (res == FR_OK) {
3813  if (dj.fn[NSFLAG] & NS_NONAME) { /* Is it origin directory itself? */
3814  res = FR_INVALID_NAME;
3815  } else {
3816  if (dj.obj.attr & AM_DIR) { /* Is it a directory? */
3817  res = FR_NO_FILE;
3818  }
3819  }
3820  }
3821 #endif
3822 
3823  if (res == FR_OK) {
3824 #if FF_FS_EXFAT
3825  if (fs->fs_type == FS_EXFAT) {
3826  fp->obj.c_scl = dj.obj.sclust; /* Get containing directory info */
3827  fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
3828  fp->obj.c_ofs = dj.blk_ofs;
3829  init_alloc_info(fs, &fp->obj);
3830  } else
3831 #endif
3832  {
3833  fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */
3834  fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
3835  }
3836 #if FF_USE_FASTSEEK
3837  fp->cltbl = 0; /* Disable fast seek mode */
3838 #endif
3839  fp->obj.fs = fs; /* Validate the file object */
3840  fp->obj.id = fs->id;
3841  fp->flag = mode; /* Set file access mode */
3842  fp->err = 0; /* Clear error flag */
3843  fp->sect = 0; /* Invalidate current data sector */
3844  fp->fptr = 0; /* Set file pointer top of the file */
3845 #if !FF_FS_READONLY
3846 #if !FF_FS_TINY
3847  mem_set(fp->buf, 0, sizeof fp->buf); /* Clear sector buffer */
3848 #endif
3849  if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */
3850  fp->fptr = fp->obj.objsize; /* Offset to seek */
3851  bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */
3852  clst = fp->obj.sclust; /* Follow the cluster chain */
3853  for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {
3854  clst = get_fat(&fp->obj, clst);
3855  if (clst <= 1) res = FR_INT_ERR;
3856  if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;
3857  }
3858  fp->clust = clst;
3859  if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */
3860  sc = clst2sect(fs, clst);
3861  if (sc == 0) {
3862  res = FR_INT_ERR;
3863  } else {
3864  fp->sect = sc + (DWORD)(ofs / SS(fs));
3865 #if !FF_FS_TINY
3866  if (disk_read(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
3867 #endif
3868  }
3869  }
3870  }
3871 #endif
3872  }
3873 
3874  FREE_NAMBUF();
3875  }
3876 
3877  if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */
3878 
3879  LEAVE_FF(fs, res);
3880 }
3881 
3882 
3883 
3884 
3885 /*-----------------------------------------------------------------------*/
3886 /* Read File */
3887 /*-----------------------------------------------------------------------*/
3888 
3889 FRESULT f_read (
3890  FIL* fp, /* Pointer to the file object */
3891  void* buff, /* Pointer to data buffer */
3892  UINT btr, /* Number of bytes to read */
3893  UINT* br /* Pointer to number of bytes read */
3894 )
3895 {
3896  FRESULT res;
3897  FATFS *fs;
3898  DWORD clst;
3899  LBA_t sect;
3900  FSIZE_t remain;
3901  UINT rcnt, cc, csect;
3902  BYTE *rbuff = (BYTE*)buff;
3903 
3904 
3905  *br = 0; /* Clear read byte counter */
3906  res = validate(&fp->obj, &fs); /* Check validity of the file object */
3907  if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
3908  if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
3909  remain = fp->obj.objsize - fp->fptr;
3910  if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
3911 
3912  for ( ; btr; /* Repeat until btr bytes read */
3913  btr -= rcnt, *br += rcnt, rbuff += rcnt, fp->fptr += rcnt) {
3914  if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
3915  csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
3916  if (csect == 0) { /* On the cluster boundary? */
3917  if (fp->fptr == 0) { /* On the top of the file? */
3918  clst = fp->obj.sclust; /* Follow cluster chain from the origin */
3919  } else { /* Middle or end of the file */
3920 #if FF_USE_FASTSEEK
3921  if (fp->cltbl) {
3922  clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
3923  } else
3924 #endif
3925  {
3926  clst = get_fat(&fp->obj, fp->clust); /* Follow cluster chain on the FAT */
3927  }
3928  }
3929  if (clst < 2) ABORT(fs, FR_INT_ERR);
3930  if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
3931  fp->clust = clst; /* Update current cluster */
3932  }
3933  sect = clst2sect(fs, fp->clust); /* Get current sector */
3934  if (sect == 0) ABORT(fs, FR_INT_ERR);
3935  sect += csect;
3936  cc = btr / SS(fs); /* When remaining bytes >= sector size, */
3937  if (cc > 0) { /* Read maximum contiguous sectors directly */
3938  if (csect + cc > fs->csize) { /* Clip at cluster boundary */
3939  cc = fs->csize - csect;
3940  }
3941  if (disk_read(fs->pdrv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
3942 #if !FF_FS_READONLY && FF_FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
3943 #if FF_FS_TINY
3944  if (fs->wflag && fs->winsect - sect < cc) {
3945  mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
3946  }
3947 #else
3948  if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
3949  mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
3950  }
3951 #endif
3952 #endif
3953  rcnt = SS(fs) * cc; /* Number of bytes transferred */
3954  continue;
3955  }
3956 #if !FF_FS_TINY
3957  if (fp->sect != sect) { /* Load data sector if not in cache */
3958 #if !FF_FS_READONLY
3959  if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
3960  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
3961  fp->flag &= (BYTE)~FA_DIRTY;
3962  }
3963 #endif
3964  if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
3965  }
3966 #endif
3967  fp->sect = sect;
3968  }
3969  rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
3970  if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */
3971 #if FF_FS_TINY
3972  if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
3973  mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
3974 #else
3975  mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
3976 #endif
3977  }
3978 
3979  LEAVE_FF(fs, FR_OK);
3980 }
3981 
3982 
3983 
3984 
3985 #if !FF_FS_READONLY
3986 /*-----------------------------------------------------------------------*/
3987 /* Write File */
3988 /*-----------------------------------------------------------------------*/
3989 
3990 FRESULT f_write (
3991  FIL* fp, /* Pointer to the file object */
3992  const void* buff, /* Pointer to the data to be written */
3993  UINT btw, /* Number of bytes to write */
3994  UINT* bw /* Pointer to number of bytes written */
3995 )
3996 {
3997  FRESULT res;
3998  FATFS *fs;
3999  DWORD clst;
4000  LBA_t sect;
4001  UINT wcnt, cc, csect;
4002  const BYTE *wbuff = (const BYTE*)buff;
4003 
4004 
4005  *bw = 0; /* Clear write byte counter */
4006  res = validate(&fp->obj, &fs); /* Check validity of the file object */
4007  if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */
4008  if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
4009 
4010  /* Check fptr wrap-around (file size cannot reach 4 GiB at FAT volume) */
4011  if ((!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {
4012  btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);
4013  }
4014 
4015  for ( ; btw; /* Repeat until all data written */
4016  btw -= wcnt, *bw += wcnt, wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize) {
4017  if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
4018  csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */
4019  if (csect == 0) { /* On the cluster boundary? */
4020  if (fp->fptr == 0) { /* On the top of the file? */
4021  clst = fp->obj.sclust; /* Follow from the origin */
4022  if (clst == 0) { /* If no cluster is allocated, */
4023  clst = create_chain(&fp->obj, 0); /* create a new cluster chain */
4024  }
4025  } else { /* On the middle or end of the file */
4026 #if FF_USE_FASTSEEK
4027  if (fp->cltbl) {
4028  clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
4029  } else
4030 #endif
4031  {
4032  clst = create_chain(&fp->obj, fp->clust); /* Follow or stretch cluster chain on the FAT */
4033  }
4034  }
4035  if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
4036  if (clst == 1) ABORT(fs, FR_INT_ERR);
4037  if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
4038  fp->clust = clst; /* Update current cluster */
4039  if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */
4040  }
4041 #if FF_FS_TINY
4042  if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */
4043 #else
4044  if (fp->flag & FA_DIRTY) { /* Write-back sector cache */
4045  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
4046  fp->flag &= (BYTE)~FA_DIRTY;
4047  }
4048 #endif
4049  sect = clst2sect(fs, fp->clust); /* Get current sector */
4050  if (sect == 0) ABORT(fs, FR_INT_ERR);
4051  sect += csect;
4052  cc = btw / SS(fs); /* When remaining bytes >= sector size, */
4053  if (cc > 0) { /* Write maximum contiguous sectors directly */
4054  if (csect + cc > fs->csize) { /* Clip at cluster boundary */
4055  cc = fs->csize - csect;
4056  }
4057  if (disk_write(fs->pdrv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
4058 #if FF_FS_MINIMIZE <= 2
4059 #if FF_FS_TINY
4060  if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
4061  mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
4062  fs->wflag = 0;
4063  }
4064 #else
4065  if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
4066  mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
4067  fp->flag &= (BYTE)~FA_DIRTY;
4068  }
4069 #endif
4070 #endif
4071  wcnt = SS(fs) * cc; /* Number of bytes transferred */
4072  continue;
4073  }
4074 #if FF_FS_TINY
4075  if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */
4076  if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);
4077  fs->winsect = sect;
4078  }
4079 #else
4080  if (fp->sect != sect && /* Fill sector cache with file data */
4081  fp->fptr < fp->obj.objsize &&
4082  disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) {
4083  ABORT(fs, FR_DISK_ERR);
4084  }
4085 #endif
4086  fp->sect = sect;
4087  }
4088  wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
4089  if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */
4090 #if FF_FS_TINY
4091  if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
4092  mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
4093  fs->wflag = 1;
4094 #else
4095  mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
4096  fp->flag |= FA_DIRTY;
4097 #endif
4098  }
4099 
4100  fp->flag |= FA_MODIFIED; /* Set file change flag */
4101 
4102  LEAVE_FF(fs, FR_OK);
4103 }
4104 
4105 
4106 
4107 
4108 /*-----------------------------------------------------------------------*/
4109 /* Synchronize the File */
4110 /*-----------------------------------------------------------------------*/
4111 
4112 FRESULT f_sync (
4113  FIL* fp /* Pointer to the file object */
4114 )
4115 {
4116  FRESULT res;
4117  FATFS *fs;
4118  DWORD tm;
4119  BYTE *dir;
4120 
4121 
4122  res = validate(&fp->obj, &fs); /* Check validity of the file object */
4123  if (res == FR_OK) {
4124  if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */
4125 #if !FF_FS_TINY
4126  if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */
4127  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);
4128  fp->flag &= (BYTE)~FA_DIRTY;
4129  }
4130 #endif
4131  /* Update the directory entry */
4132  tm = GET_FATTIME(); /* Modified time */
4133 #if FF_FS_EXFAT
4134  if (fs->fs_type == FS_EXFAT) {
4135  res = fill_first_frag(&fp->obj); /* Fill first fragment on the FAT if needed */
4136  if (res == FR_OK) {
4137  res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */
4138  }
4139  if (res == FR_OK) {
4140  DIR dj;
4141  DEF_NAMBUF
4142 
4143  INIT_NAMBUF(fs);
4144  res = load_obj_xdir(&dj, &fp->obj); /* Load directory entry block */
4145  if (res == FR_OK) {
4146  fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive attribute to indicate that the file has been changed */
4147  fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation information */
4148  st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust); /* Update start cluster */
4149  st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize); /* Update file size */
4150  st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize); /* (FatFs does not support Valid File Size feature) */
4151  st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */
4152  fs->dirbuf[XDIR_ModTime10] = 0;
4153  st_dword(fs->dirbuf + XDIR_AccTime, 0);
4154  res = store_xdir(&dj); /* Restore it to the directory */
4155  if (res == FR_OK) {
4156  res = sync_fs(fs);
4157  fp->flag &= (BYTE)~FA_MODIFIED;
4158  }
4159  }
4160  FREE_NAMBUF();
4161  }
4162  } else
4163 #endif
4164  {
4165  res = move_window(fs, fp->dir_sect);
4166  if (res == FR_OK) {
4167  dir = fp->dir_ptr;
4168  dir[DIR_Attr] |= AM_ARC; /* Set archive attribute to indicate that the file has been changed */
4169  st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation information */
4170  st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */
4171  st_dword(dir + DIR_ModTime, tm); /* Update modified time */
4172  st_word(dir + DIR_LstAccDate, 0);
4173  fs->wflag = 1;
4174  res = sync_fs(fs); /* Restore it to the directory */
4175  fp->flag &= (BYTE)~FA_MODIFIED;
4176  }
4177  }
4178  }
4179  }
4180 
4181  LEAVE_FF(fs, res);
4182 }
4183 
4184 #endif /* !FF_FS_READONLY */
4185 
4186 
4187 
4188 
4189 /*-----------------------------------------------------------------------*/
4190 /* Close File */
4191 /*-----------------------------------------------------------------------*/
4192 
4193 FRESULT f_close (
4194  FIL* fp /* Pointer to the file object to be closed */
4195 )
4196 {
4197  FRESULT res;
4198  FATFS *fs;
4199 
4200 #if !FF_FS_READONLY
4201  res = f_sync(fp); /* Flush cached data */
4202  if (res == FR_OK)
4203 #endif
4204  {
4205  res = validate(&fp->obj, &fs); /* Lock volume */
4206  if (res == FR_OK) {
4207 #if FF_FS_LOCK != 0
4208  res = dec_lock(fp->obj.lockid); /* Decrement file open counter */
4209  if (res == FR_OK) fp->obj.fs = 0; /* Invalidate file object */
4210 #else
4211  fp->obj.fs = 0; /* Invalidate file object */
4212 #endif
4213 #if FF_FS_REENTRANT
4214  unlock_fs(fs, FR_OK); /* Unlock volume */
4215 #endif
4216  }
4217  }
4218  return res;
4219 }
4220 
4221 
4222 
4223 
4224 #if FF_FS_RPATH >= 1
4225 /*-----------------------------------------------------------------------*/
4226 /* Change Current Directory or Current Drive, Get Current Directory */
4227 /*-----------------------------------------------------------------------*/
4228 
4229 FRESULT f_chdrive (
4230  const TCHAR* path /* Drive number to set */
4231 )
4232 {
4233  int vol;
4234 
4235 
4236  /* Get logical drive number */
4237  vol = get_ldnumber(&path);
4238  if (vol < 0) return FR_INVALID_DRIVE;
4239  CurrVol = (BYTE)vol; /* Set it as current volume */
4240 
4241  return FR_OK;
4242 }
4243 
4244 
4245 
4246 FRESULT f_chdir (
4247  const TCHAR* path /* Pointer to the directory path */
4248 )
4249 {
4250 #if FF_STR_VOLUME_ID == 2
4251  UINT i;
4252 #endif
4253  FRESULT res;
4254  DIR dj;
4255  FATFS *fs;
4256  DEF_NAMBUF
4257 
4258 
4259  /* Get logical drive */
4260  res = mount_volume(&path, &fs, 0);
4261  if (res == FR_OK) {
4262  dj.obj.fs = fs;
4263  INIT_NAMBUF(fs);
4264  res = follow_path(&dj, path); /* Follow the path */
4265  if (res == FR_OK) { /* Follow completed */
4266  if (dj.fn[NSFLAG] & NS_NONAME) { /* Is it the start directory itself? */
4267  fs->cdir = dj.obj.sclust;
4268 #if FF_FS_EXFAT
4269  if (fs->fs_type == FS_EXFAT) {
4270  fs->cdc_scl = dj.obj.c_scl;
4271  fs->cdc_size = dj.obj.c_size;
4272  fs->cdc_ofs = dj.obj.c_ofs;
4273  }
4274 #endif
4275  } else {
4276  if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */
4277 #if FF_FS_EXFAT
4278  if (fs->fs_type == FS_EXFAT) {
4279  fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */
4280  fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */
4281  fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
4282  fs->cdc_ofs = dj.blk_ofs;
4283  } else
4284 #endif
4285  {
4286  fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */
4287  }
4288  } else {
4289  res = FR_NO_PATH; /* Reached but a file */
4290  }
4291  }
4292  }
4293  FREE_NAMBUF();
4294  if (res == FR_NO_FILE) res = FR_NO_PATH;
4295 #if FF_STR_VOLUME_ID == 2 /* Also current drive is changed at Unix style volume ID */
4296  if (res == FR_OK) {
4297  for (i = FF_VOLUMES - 1; i && fs != FatFs[i]; i--) ; /* Set current drive */
4298  CurrVol = (BYTE)i;
4299  }
4300 #endif
4301  }
4302 
4303  LEAVE_FF(fs, res);
4304 }
4305 
4306 
4307 #if FF_FS_RPATH >= 2
4308 FRESULT f_getcwd (
4309  TCHAR* buff, /* Pointer to the directory path */
4310  UINT len /* Size of buff in unit of TCHAR */
4311 )
4312 {
4313  FRESULT res;
4314  DIR dj;
4315  FATFS *fs;
4316  UINT i, n;
4317  DWORD ccl;
4318  TCHAR *tp = buff;
4319 #if FF_VOLUMES >= 2
4320  UINT vl;
4321 #if FF_STR_VOLUME_ID
4322  const char *vp;
4323 #endif
4324 #endif
4325  FILINFO fno;
4326  DEF_NAMBUF
4327 
4328 
4329  /* Get logical drive */
4330  buff[0] = 0; /* Set null string to get current volume */
4331  res = mount_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */
4332  if (res == FR_OK) {
4333  dj.obj.fs = fs;
4334  INIT_NAMBUF(fs);
4335 
4336  /* Follow parent directories and create the path */
4337  i = len; /* Bottom of buffer (directory stack base) */
4338  if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */
4339  dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */
4340  while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
4341  res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */
4342  if (res != FR_OK) break;
4343  res = move_window(fs, dj.sect);
4344  if (res != FR_OK) break;
4345  dj.obj.sclust = ld_clust(fs, dj.dir); /* Goto parent directory */
4346  res = dir_sdi(&dj, 0);
4347  if (res != FR_OK) break;
4348  do { /* Find the entry links to the child directory */
4349  res = DIR_READ_FILE(&dj);
4350  if (res != FR_OK) break;
4351  if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */
4352  res = dir_next(&dj, 0);
4353  } while (res == FR_OK);
4354  if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
4355  if (res != FR_OK) break;
4356  get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
4357  for (n = 0; fno.fname[n]; n++) ; /* Name length */
4358  if (i < n + 1) { /* Insufficient space to store the path name? */
4359  res = FR_NOT_ENOUGH_CORE; break;
4360  }
4361  while (n) buff[--i] = fno.fname[--n]; /* Stack the name */
4362  buff[--i] = '/';
4363  }
4364  }
4365  if (res == FR_OK) {
4366  if (i == len) buff[--i] = '/'; /* Is it the root-directory? */
4367 #if FF_VOLUMES >= 2 /* Put drive prefix */
4368  vl = 0;
4369 #if FF_STR_VOLUME_ID >= 1 /* String volume ID */
4370  for (n = 0, vp = (const char*)VolumeStr[CurrVol]; vp[n]; n++) ;
4371  if (i >= n + 2) {
4372  if (FF_STR_VOLUME_ID == 2) *tp++ = (TCHAR)'/';
4373  for (vl = 0; vl < n; *tp++ = (TCHAR)vp[vl], vl++) ;
4374  if (FF_STR_VOLUME_ID == 1) *tp++ = (TCHAR)':';
4375  vl++;
4376  }
4377 #else /* Numeric volume ID */
4378  if (i >= 3) {
4379  *tp++ = (TCHAR)'0' + CurrVol;
4380  *tp++ = (TCHAR)':';
4381  vl = 2;
4382  }
4383 #endif
4384  if (vl == 0) res = FR_NOT_ENOUGH_CORE;
4385 #endif
4386  /* Add current directory path */
4387  if (res == FR_OK) {
4388  do *tp++ = buff[i++]; while (i < len); /* Copy stacked path string */
4389  }
4390  }
4391  FREE_NAMBUF();
4392  }
4393 
4394  *tp = 0;
4395  LEAVE_FF(fs, res);
4396 }
4397 
4398 #endif /* FF_FS_RPATH >= 2 */
4399 #endif /* FF_FS_RPATH >= 1 */
4400 
4401 
4402 
4403 #if FF_FS_MINIMIZE <= 2
4404 /*-----------------------------------------------------------------------*/
4405 /* Seek File Read/Write Pointer */
4406 /*-----------------------------------------------------------------------*/
4407 
4408 FRESULT f_lseek (
4409  FIL* fp, /* Pointer to the file object */
4410  FSIZE_t ofs /* File pointer from top of file */
4411 )
4412 {
4413  FRESULT res;
4414  FATFS *fs;
4415  DWORD clst, bcs;
4416  LBA_t nsect;
4417  FSIZE_t ifptr;
4418 #if FF_USE_FASTSEEK
4419  DWORD cl, pcl, ncl, tcl, tlen, ulen, *tbl;
4420  LBA_t dsc;
4421 #endif
4422 
4423  res = validate(&fp->obj, &fs); /* Check validity of the file object */
4424  if (res == FR_OK) res = (FRESULT)fp->err;
4425 #if FF_FS_EXFAT && !FF_FS_READONLY
4426  if (res == FR_OK && fs->fs_type == FS_EXFAT) {
4427  res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */
4428  }
4429 #endif
4430  if (res != FR_OK) LEAVE_FF(fs, res);
4431 
4432 #if FF_USE_FASTSEEK
4433  if (fp->cltbl) { /* Fast seek */
4434  if (ofs == CREATE_LINKMAP) { /* Create CLMT */
4435  tbl = fp->cltbl;
4436  tlen = *tbl++; ulen = 2; /* Given table size and required table size */
4437  cl = fp->obj.sclust; /* Origin of the chain */
4438  if (cl != 0) {
4439  do {
4440  /* Get a fragment */
4441  tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
4442  do {
4443  pcl = cl; ncl++;
4444  cl = get_fat(&fp->obj, cl);
4445  if (cl <= 1) ABORT(fs, FR_INT_ERR);
4446  if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
4447  } while (cl == pcl + 1);
4448  if (ulen <= tlen) { /* Store the length and top of the fragment */
4449  *tbl++ = ncl; *tbl++ = tcl;
4450  }
4451  } while (cl < fs->n_fatent); /* Repeat until end of chain */
4452  }
4453  *fp->cltbl = ulen; /* Number of items used */
4454  if (ulen <= tlen) {
4455  *tbl = 0; /* Terminate table */
4456  } else {
4457  res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
4458  }
4459  } else { /* Fast seek */
4460  if (ofs > fp->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */
4461  fp->fptr = ofs; /* Set file pointer */
4462  if (ofs > 0) {
4463  fp->clust = clmt_clust(fp, ofs - 1);
4464  dsc = clst2sect(fs, fp->clust);
4465  if (dsc == 0) ABORT(fs, FR_INT_ERR);
4466  dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);
4467  if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */
4468 #if !FF_FS_TINY
4469 #if !FF_FS_READONLY
4470  if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
4471  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
4472  fp->flag &= (BYTE)~FA_DIRTY;
4473  }
4474 #endif
4475  if (disk_read(fs->pdrv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */
4476 #endif
4477  fp->sect = dsc;
4478  }
4479  }
4480  }
4481  } else
4482 #endif
4483 
4484  /* Normal Seek */
4485  {
4486 #if FF_FS_EXFAT
4487  if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4 GiB - 1 if at FATxx */
4488 #endif
4489  if (ofs > fp->obj.objsize && (FF_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */
4490  ofs = fp->obj.objsize;
4491  }
4492  ifptr = fp->fptr;
4493  fp->fptr = nsect = 0;
4494  if (ofs > 0) {
4495  bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */
4496  if (ifptr > 0 &&
4497  (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
4498  fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */
4499  ofs -= fp->fptr;
4500  clst = fp->clust;
4501  } else { /* When seek to back cluster, */
4502  clst = fp->obj.sclust; /* start from the first cluster */
4503 #if !FF_FS_READONLY
4504  if (clst == 0) { /* If no cluster chain, create a new chain */
4505  clst = create_chain(&fp->obj, 0);
4506  if (clst == 1) ABORT(fs, FR_INT_ERR);
4507  if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
4508  fp->obj.sclust = clst;
4509  }
4510 #endif
4511  fp->clust = clst;
4512  }
4513  if (clst != 0) {
4514  while (ofs > bcs) { /* Cluster following loop */
4515  ofs -= bcs; fp->fptr += bcs;
4516 #if !FF_FS_READONLY
4517  if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
4518  if (FF_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */
4519  fp->obj.objsize = fp->fptr;
4520  fp->flag |= FA_MODIFIED;
4521  }
4522  clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */
4523  if (clst == 0) { /* Clip file size in case of disk full */
4524  ofs = 0; break;
4525  }
4526  } else
4527 #endif
4528  {
4529  clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */
4530  }
4531  if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
4532  if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);
4533  fp->clust = clst;
4534  }
4535  fp->fptr += ofs;
4536  if (ofs % SS(fs)) {
4537  nsect = clst2sect(fs, clst); /* Current sector */
4538  if (nsect == 0) ABORT(fs, FR_INT_ERR);
4539  nsect += (DWORD)(ofs / SS(fs));
4540  }
4541  }
4542  }
4543  if (!FF_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */
4544  fp->obj.objsize = fp->fptr;
4545  fp->flag |= FA_MODIFIED;
4546  }
4547  if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */
4548 #if !FF_FS_TINY
4549 #if !FF_FS_READONLY
4550  if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
4551  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
4552  fp->flag &= (BYTE)~FA_DIRTY;
4553  }
4554 #endif
4555  if (disk_read(fs->pdrv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
4556 #endif
4557  fp->sect = nsect;
4558  }
4559  }
4560 
4561  LEAVE_FF(fs, res);
4562 }
4563 
4564 
4565 
4566 #if FF_FS_MINIMIZE <= 1
4567 /*-----------------------------------------------------------------------*/
4568 /* Create a Directory Object */
4569 /*-----------------------------------------------------------------------*/
4570 
4571 FRESULT f_opendir (
4572  DIR* dp, /* Pointer to directory object to create */
4573  const TCHAR* path /* Pointer to the directory path */
4574 )
4575 {
4576  FRESULT res;
4577  FATFS *fs;
4578  DEF_NAMBUF
4579 
4580 
4581  if (!dp) return FR_INVALID_OBJECT;
4582 
4583  /* Get logical drive */
4584  res = mount_volume(&path, &fs, 0);
4585  if (res == FR_OK) {
4586  dp->obj.fs = fs;
4587  INIT_NAMBUF(fs);
4588  res = follow_path(dp, path); /* Follow the path to the directory */
4589  if (res == FR_OK) { /* Follow completed */
4590  if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */
4591  if (dp->obj.attr & AM_DIR) { /* This object is a sub-directory */
4592 #if FF_FS_EXFAT
4593  if (fs->fs_type == FS_EXFAT) {
4594  dp->obj.c_scl = dp->obj.sclust; /* Get containing directory inforamation */
4595  dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat;
4596  dp->obj.c_ofs = dp->blk_ofs;
4597  init_alloc_info(fs, &dp->obj); /* Get object allocation info */
4598  } else
4599 #endif
4600  {
4601  dp->obj.sclust = ld_clust(fs, dp->dir); /* Get object allocation info */
4602  }
4603  } else { /* This object is a file */
4604  res = FR_NO_PATH;
4605  }
4606  }
4607  if (res == FR_OK) {
4608  dp->obj.id = fs->id;
4609  res = dir_sdi(dp, 0); /* Rewind directory */
4610 #if FF_FS_LOCK != 0
4611  if (res == FR_OK) {
4612  if (dp->obj.sclust != 0) {
4613  dp->obj.lockid = inc_lock(dp, 0); /* Lock the sub directory */
4614  if (!dp->obj.lockid) res = FR_TOO_MANY_OPEN_FILES;
4615  } else {
4616  dp->obj.lockid = 0; /* Root directory need not to be locked */
4617  }
4618  }
4619 #endif
4620  }
4621  }
4622  FREE_NAMBUF();
4623  if (res == FR_NO_FILE) res = FR_NO_PATH;
4624  }
4625  if (res != FR_OK) dp->obj.fs = 0; /* Invalidate the directory object if function faild */
4626 
4627  LEAVE_FF(fs, res);
4628 }
4629 
4630 
4631 
4632 
4633 /*-----------------------------------------------------------------------*/
4634 /* Close Directory */
4635 /*-----------------------------------------------------------------------*/
4636 
4637 FRESULT f_closedir (
4638  DIR *dp /* Pointer to the directory object to be closed */
4639 )
4640 {
4641  FRESULT res;
4642  FATFS *fs;
4643 
4644 
4645  res = validate(&dp->obj, &fs); /* Check validity of the file object */
4646  if (res == FR_OK) {
4647 #if FF_FS_LOCK != 0
4648  if (dp->obj.lockid) res = dec_lock(dp->obj.lockid); /* Decrement sub-directory open counter */
4649  if (res == FR_OK) dp->obj.fs = 0; /* Invalidate directory object */
4650 #else
4651  dp->obj.fs = 0; /* Invalidate directory object */
4652 #endif
4653 #if FF_FS_REENTRANT
4654  unlock_fs(fs, FR_OK); /* Unlock volume */
4655 #endif
4656  }
4657  return res;
4658 }
4659 
4660 
4661 
4662 
4663 /*-----------------------------------------------------------------------*/
4664 /* Read Directory Entries in Sequence */
4665 /*-----------------------------------------------------------------------*/
4666 
4667 FRESULT f_readdir (
4668  DIR* dp, /* Pointer to the open directory object */
4669  FILINFO* fno /* Pointer to file information to return */
4670 )
4671 {
4672  FRESULT res;
4673  FATFS *fs;
4674  DEF_NAMBUF
4675 
4676 
4677  res = validate(&dp->obj, &fs); /* Check validity of the directory object */
4678  if (res == FR_OK) {
4679  if (!fno) {
4680  res = dir_sdi(dp, 0); /* Rewind the directory object */
4681  } else {
4682  INIT_NAMBUF(fs);
4683  res = DIR_READ_FILE(dp); /* Read an item */
4684  if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */
4685  if (res == FR_OK) { /* A valid entry is found */
4686  get_fileinfo(dp, fno); /* Get the object information */
4687  res = dir_next(dp, 0); /* Increment index for next */
4688  if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */
4689  }
4690  FREE_NAMBUF();
4691  }
4692  }
4693  LEAVE_FF(fs, res);
4694 }
4695 
4696 
4697 
4698 #if FF_USE_FIND
4699 /*-----------------------------------------------------------------------*/
4700 /* Find Next File */
4701 /*-----------------------------------------------------------------------*/
4702 
4703 FRESULT f_findnext (
4704  DIR* dp, /* Pointer to the open directory object */
4705  FILINFO* fno /* Pointer to the file information structure */
4706 )
4707 {
4708  FRESULT res;
4709 
4710 
4711  for (;;) {
4712  res = f_readdir(dp, fno); /* Get a directory item */
4713  if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
4714  if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */
4715 #if FF_USE_LFN && FF_USE_FIND == 2
4716  if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */
4717 #endif
4718  }
4719  return res;
4720 }
4721 
4722 
4723 
4724 /*-----------------------------------------------------------------------*/
4725 /* Find First File */
4726 /*-----------------------------------------------------------------------*/
4727 
4728 FRESULT f_findfirst (
4729  DIR* dp, /* Pointer to the blank directory object */
4730  FILINFO* fno, /* Pointer to the file information structure */
4731  const TCHAR* path, /* Pointer to the directory to open */
4732  const TCHAR* pattern /* Pointer to the matching pattern */
4733 )
4734 {
4735  FRESULT res;
4736 
4737 
4738  dp->pat = pattern; /* Save pointer to pattern string */
4739  res = f_opendir(dp, path); /* Open the target directory */
4740  if (res == FR_OK) {
4741  res = f_findnext(dp, fno); /* Find the first item */
4742  }
4743  return res;
4744 }
4745 
4746 #endif /* FF_USE_FIND */
4747 
4748 
4749 
4750 #if FF_FS_MINIMIZE == 0
4751 /*-----------------------------------------------------------------------*/
4752 /* Get File Status */
4753 /*-----------------------------------------------------------------------*/
4754 
4755 FRESULT f_stat (
4756  const TCHAR* path, /* Pointer to the file path */
4757  FILINFO* fno /* Pointer to file information to return */
4758 )
4759 {
4760  FRESULT res;
4761  DIR dj;
4762  DEF_NAMBUF
4763 
4764 
4765  /* Get logical drive */
4766  res = mount_volume(&path, &dj.obj.fs, 0);
4767  if (res == FR_OK) {
4768  INIT_NAMBUF(dj.obj.fs);
4769  res = follow_path(&dj, path); /* Follow the file path */
4770  if (res == FR_OK) { /* Follow completed */
4771  if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */
4772  res = FR_INVALID_NAME;
4773  } else { /* Found an object */
4774  if (fno) get_fileinfo(&dj, fno);
4775  }
4776  }
4777  FREE_NAMBUF();
4778  }
4779 
4780  LEAVE_FF(dj.obj.fs, res);
4781 }
4782 
4783 
4784 
4785 #if !FF_FS_READONLY
4786 /*-----------------------------------------------------------------------*/
4787 /* Get Number of Free Clusters */
4788 /*-----------------------------------------------------------------------*/
4789 
4790 FRESULT f_getfree (
4791  const TCHAR* path, /* Logical drive number */
4792  DWORD* nclst, /* Pointer to a variable to return number of free clusters */
4793  FATFS** fatfs /* Pointer to return pointer to corresponding filesystem object */
4794 )
4795 {
4796  FRESULT res;
4797  FATFS *fs;
4798  DWORD nfree, clst, stat;
4799  LBA_t sect;
4800  UINT i;
4801  FFOBJID obj;
4802 
4803 
4804  /* Get logical drive */
4805  res = mount_volume(&path, &fs, 0);
4806  if (res == FR_OK) {
4807  *fatfs = fs; /* Return ptr to the fs object */
4808  /* If free_clst is valid, return it without full FAT scan */
4809  if (fs->free_clst <= fs->n_fatent - 2) {
4810  *nclst = fs->free_clst;
4811  } else {
4812  /* Scan FAT to obtain number of free clusters */
4813  nfree = 0;
4814  if (fs->fs_type == FS_FAT12) { /* FAT12: Scan bit field FAT entries */
4815  clst = 2; obj.fs = fs;
4816  do {
4817  stat = get_fat(&obj, clst);
4818  if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
4819  if (stat == 1) { res = FR_INT_ERR; break; }
4820  if (stat == 0) nfree++;
4821  } while (++clst < fs->n_fatent);
4822  } else {
4823 #if FF_FS_EXFAT
4824  if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan allocation bitmap */
4825  BYTE bm;
4826  UINT b;
4827 
4828  clst = fs->n_fatent - 2; /* Number of clusters */
4829  sect = fs->bitbase; /* Bitmap sector */
4830  i = 0; /* Offset in the sector */
4831  do { /* Counts numbuer of bits with zero in the bitmap */
4832  if (i == 0) {
4833  res = move_window(fs, sect++);
4834  if (res != FR_OK) break;
4835  }
4836  for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {
4837  if (!(bm & 1)) nfree++;
4838  bm >>= 1;
4839  }
4840  i = (i + 1) % SS(fs);
4841  } while (clst);
4842  } else
4843 #endif
4844  { /* FAT16/32: Scan WORD/DWORD FAT entries */
4845  clst = fs->n_fatent; /* Number of entries */
4846  sect = fs->fatbase; /* Top of the FAT */
4847  i = 0; /* Offset in the sector */
4848  do { /* Counts numbuer of entries with zero in the FAT */
4849  if (i == 0) {
4850  res = move_window(fs, sect++);
4851  if (res != FR_OK) break;
4852  }
4853  if (fs->fs_type == FS_FAT16) {
4854  if (ld_word(fs->win + i) == 0) nfree++;
4855  i += 2;
4856  } else {
4857  if ((ld_dword(fs->win + i) & 0x0FFFFFFF) == 0) nfree++;
4858  i += 4;
4859  }
4860  i %= SS(fs);
4861  } while (--clst);
4862  }
4863  }
4864  *nclst = nfree; /* Return the free clusters */
4865  fs->free_clst = nfree; /* Now free_clst is valid */
4866  fs->fsi_flag |= 1; /* FAT32: FSInfo is to be updated */
4867  }
4868  }
4869 
4870  LEAVE_FF(fs, res);
4871 }
4872 
4873 
4874 
4875 
4876 /*-----------------------------------------------------------------------*/
4877 /* Truncate File */
4878 /*-----------------------------------------------------------------------*/
4879 
4880 FRESULT f_truncate (
4881  FIL* fp /* Pointer to the file object */
4882 )
4883 {
4884  FRESULT res;
4885  FATFS *fs;
4886  DWORD ncl;
4887 
4888 
4889  res = validate(&fp->obj, &fs); /* Check validity of the file object */
4890  if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
4891  if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
4892 
4893  if (fp->fptr < fp->obj.objsize) { /* Process when fptr is not on the eof */
4894  if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
4895  res = remove_chain(&fp->obj, fp->obj.sclust, 0);
4896  fp->obj.sclust = 0;
4897  } else { /* When truncate a part of the file, remove remaining clusters */
4898  ncl = get_fat(&fp->obj, fp->clust);
4899  res = FR_OK;
4900  if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
4901  if (ncl == 1) res = FR_INT_ERR;
4902  if (res == FR_OK && ncl < fs->n_fatent) {
4903  res = remove_chain(&fp->obj, ncl, fp->clust);
4904  }
4905  }
4906  fp->obj.objsize = fp->fptr; /* Set file size to current read/write point */
4907  fp->flag |= FA_MODIFIED;
4908 #if !FF_FS_TINY
4909  if (res == FR_OK && (fp->flag & FA_DIRTY)) {
4910  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) {
4911  res = FR_DISK_ERR;
4912  } else {
4913  fp->flag &= (BYTE)~FA_DIRTY;
4914  }
4915  }
4916 #endif
4917  if (res != FR_OK) ABORT(fs, res);
4918  }
4919 
4920  LEAVE_FF(fs, res);
4921 }
4922 
4923 
4924 
4925 
4926 /*-----------------------------------------------------------------------*/
4927 /* Delete a File/Directory */
4928 /*-----------------------------------------------------------------------*/
4929 
4930 FRESULT f_unlink (
4931  const TCHAR* path /* Pointer to the file or directory path */
4932 )
4933 {
4934  FRESULT res;
4935  DIR dj, sdj;
4936  DWORD dclst = 0;
4937  FATFS *fs;
4938 #if FF_FS_EXFAT
4939  FFOBJID obj;
4940 #endif
4941  DEF_NAMBUF
4942 
4943 
4944  /* Get logical drive */
4945  res = mount_volume(&path, &fs, FA_WRITE);
4946  if (res == FR_OK) {
4947  dj.obj.fs = fs;
4948  INIT_NAMBUF(fs);
4949  res = follow_path(&dj, path); /* Follow the file path */
4950  if (FF_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {
4951  res = FR_INVALID_NAME; /* Cannot remove dot entry */
4952  }
4953 #if FF_FS_LOCK != 0
4954  if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */
4955 #endif
4956  if (res == FR_OK) { /* The object is accessible */
4957  if (dj.fn[NSFLAG] & NS_NONAME) {
4958  res = FR_INVALID_NAME; /* Cannot remove the origin directory */
4959  } else {
4960  if (dj.obj.attr & AM_RDO) {
4961  res = FR_DENIED; /* Cannot remove R/O object */
4962  }
4963  }
4964  if (res == FR_OK) {
4965 #if FF_FS_EXFAT
4966  obj.fs = fs;
4967  if (fs->fs_type == FS_EXFAT) {
4968  init_alloc_info(fs, &obj);
4969  dclst = obj.sclust;
4970  } else
4971 #endif
4972  {
4973  dclst = ld_clust(fs, dj.dir);
4974  }
4975  if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */
4976 #if FF_FS_RPATH != 0
4977  if (dclst == fs->cdir) { /* Is it the current directory? */
4978  res = FR_DENIED;
4979  } else
4980 #endif
4981  {
4982  sdj.obj.fs = fs; /* Open the sub-directory */
4983  sdj.obj.sclust = dclst;
4984 #if FF_FS_EXFAT
4985  if (fs->fs_type == FS_EXFAT) {
4986  sdj.obj.objsize = obj.objsize;
4987  sdj.obj.stat = obj.stat;
4988  }
4989 #endif
4990  res = dir_sdi(&sdj, 0);
4991  if (res == FR_OK) {
4992  res = DIR_READ_FILE(&sdj); /* Test if the directory is empty */
4993  if (res == FR_OK) res = FR_DENIED; /* Not empty? */
4994  if (res == FR_NO_FILE) res = FR_OK; /* Empty? */
4995  }
4996  }
4997  }
4998  }
4999  if (res == FR_OK) {
5000  res = dir_remove(&dj); /* Remove the directory entry */
5001  if (res == FR_OK && dclst != 0) { /* Remove the cluster chain if exist */
5002 #if FF_FS_EXFAT
5003  res = remove_chain(&obj, dclst, 0);
5004 #else
5005  res = remove_chain(&dj.obj, dclst, 0);
5006 #endif
5007  }
5008  if (res == FR_OK) res = sync_fs(fs);
5009  }
5010  }
5011  FREE_NAMBUF();
5012  }
5013 
5014  LEAVE_FF(fs, res);
5015 }
5016 
5017 
5018 
5019 
5020 /*-----------------------------------------------------------------------*/
5021 /* Create a Directory */
5022 /*-----------------------------------------------------------------------*/
5023 
5024 FRESULT f_mkdir (
5025  const TCHAR* path /* Pointer to the directory path */
5026 )
5027 {
5028  FRESULT res;
5029  DIR dj;
5030  FFOBJID sobj;
5031  FATFS *fs;
5032  DWORD dcl, pcl, tm;
5033  DEF_NAMBUF
5034 
5035 
5036  res = mount_volume(&path, &fs, FA_WRITE); /* Get logical drive */
5037  if (res == FR_OK) {
5038  dj.obj.fs = fs;
5039  INIT_NAMBUF(fs);
5040  res = follow_path(&dj, path); /* Follow the file path */
5041  if (res == FR_OK) res = FR_EXIST; /* Name collision? */
5042  if (FF_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) { /* Invalid name? */
5043  res = FR_INVALID_NAME;
5044  }
5045  if (res == FR_NO_FILE) { /* It is clear to create a new directory */
5046  sobj.fs = fs; /* New object id to create a new chain */
5047  dcl = create_chain(&sobj, 0); /* Allocate a cluster for the new directory */
5048  res = FR_OK;
5049  if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster? */
5050  if (dcl == 1) res = FR_INT_ERR; /* Any insanity? */
5051  if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; /* Disk error? */
5052  tm = GET_FATTIME();
5053  if (res == FR_OK) {
5054  res = dir_clear(fs, dcl); /* Clean up the new table */
5055  if (res == FR_OK) {
5056  if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* Create dot entries (FAT only) */
5057  mem_set(fs->win + DIR_Name, ' ', 11); /* Create "." entry */
5058  fs->win[DIR_Name] = '.';
5059  fs->win[DIR_Attr] = AM_DIR;
5060  st_dword(fs->win + DIR_ModTime, tm);
5061  st_clust(fs, fs->win, dcl);
5062  mem_cpy(fs->win + SZDIRE, fs->win, SZDIRE); /* Create ".." entry */
5063  fs->win[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
5064  st_clust(fs, fs->win + SZDIRE, pcl);
5065  fs->wflag = 1;
5066  }
5067  res = dir_register(&dj); /* Register the object to the parent directoy */
5068  }
5069  }
5070  if (res == FR_OK) {
5071 #if FF_FS_EXFAT
5072  if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */
5073  st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */
5074  st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */
5075  st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)fs->csize * SS(fs)); /* Directory size needs to be valid */
5076  st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)fs->csize * SS(fs));
5077  fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag */
5078  fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */
5079  res = store_xdir(&dj);
5080  } else
5081 #endif
5082  {
5083  st_dword(dj.dir + DIR_ModTime, tm); /* Created time */
5084  st_clust(fs, dj.dir, dcl); /* Table start cluster */
5085  dj.dir[DIR_Attr] = AM_DIR; /* Attribute */
5086  fs->wflag = 1;
5087  }
5088  if (res == FR_OK) {
5089  res = sync_fs(fs);
5090  }
5091  } else {
5092  remove_chain(&sobj, dcl, 0); /* Could not register, remove the allocated cluster */
5093  }
5094  }
5095  FREE_NAMBUF();
5096  }
5097 
5098  LEAVE_FF(fs, res);
5099 }
5100 
5101 
5102 
5103 
5104 /*-----------------------------------------------------------------------*/
5105 /* Rename a File/Directory */
5106 /*-----------------------------------------------------------------------*/
5107 
5108 FRESULT f_rename (
5109  const TCHAR* path_old, /* Pointer to the object name to be renamed */
5110  const TCHAR* path_new /* Pointer to the new name */
5111 )
5112 {
5113  FRESULT res;
5114  DIR djo, djn;
5115  FATFS *fs;
5116  BYTE buf[FF_FS_EXFAT ? SZDIRE * 2 : SZDIRE], *dir;
5117  LBA_t sect;
5118  DEF_NAMBUF
5119 
5120 
5121  get_ldnumber(&path_new); /* Snip the drive number of new name off */
5122  res = mount_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */
5123  if (res == FR_OK) {
5124  djo.obj.fs = fs;
5125  INIT_NAMBUF(fs);
5126  res = follow_path(&djo, path_old); /* Check old object */
5127  if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */
5128 #if FF_FS_LOCK != 0
5129  if (res == FR_OK) {
5130  res = chk_lock(&djo, 2);
5131  }
5132 #endif
5133  if (res == FR_OK) { /* Object to be renamed is found */
5134 #if FF_FS_EXFAT
5135  if (fs->fs_type == FS_EXFAT) { /* At exFAT volume */
5136  BYTE nf, nn;
5137  WORD nh;
5138 
5139  mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */
5140  mem_cpy(&djn, &djo, sizeof djo);
5141  res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
5142  if (res == FR_OK) { /* Is new name already in use by any other object? */
5143  res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
5144  }
5145  if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
5146  res = dir_register(&djn); /* Register the new entry */
5147  if (res == FR_OK) {
5148  nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];
5149  nh = ld_word(fs->dirbuf + XDIR_NameHash);
5150  mem_cpy(fs->dirbuf, buf, SZDIRE * 2); /* Restore 85+C0 entry */
5151  fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;
5152  st_word(fs->dirbuf + XDIR_NameHash, nh);
5153  if (!(fs->dirbuf[XDIR_Attr] & AM_DIR)) fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive attribute if it is a file */
5154 /* Start of critical section where an interruption can cause a cross-link */
5155  res = store_xdir(&djn);
5156  }
5157  }
5158  } else
5159 #endif
5160  { /* At FAT/FAT32 volume */
5161  mem_cpy(buf, djo.dir, SZDIRE); /* Save directory entry of the object */
5162  mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */
5163  res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */
5164  if (res == FR_OK) { /* Is new name already in use by any other object? */
5165  res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
5166  }
5167  if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
5168  res = dir_register(&djn); /* Register the new entry */
5169  if (res == FR_OK) {
5170  dir = djn.dir; /* Copy directory entry of the object except name */
5171  mem_cpy(dir + 13, buf + 13, SZDIRE - 13);
5172  dir[DIR_Attr] = buf[DIR_Attr];
5173  if (!(dir[DIR_Attr] & AM_DIR)) dir[DIR_Attr] |= AM_ARC; /* Set archive attribute if it is a file */
5174  fs->wflag = 1;
5175  if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */
5176  sect = clst2sect(fs, ld_clust(fs, dir));
5177  if (sect == 0) {
5178  res = FR_INT_ERR;
5179  } else {
5180 /* Start of critical section where an interruption can cause a cross-link */
5181  res = move_window(fs, sect);
5182  dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */
5183  if (res == FR_OK && dir[1] == '.') {
5184  st_clust(fs, dir, djn.obj.sclust);
5185  fs->wflag = 1;
5186  }
5187  }
5188  }
5189  }
5190  }
5191  }
5192  if (res == FR_OK) {
5193  res = dir_remove(&djo); /* Remove old entry */
5194  if (res == FR_OK) {
5195  res = sync_fs(fs);
5196  }
5197  }
5198 /* End of the critical section */
5199  }
5200  FREE_NAMBUF();
5201  }
5202 
5203  LEAVE_FF(fs, res);
5204 }
5205 
5206 #endif /* !FF_FS_READONLY */
5207 #endif /* FF_FS_MINIMIZE == 0 */
5208 #endif /* FF_FS_MINIMIZE <= 1 */
5209 #endif /* FF_FS_MINIMIZE <= 2 */
5210 
5211 
5212 
5213 #if FF_USE_CHMOD && !FF_FS_READONLY
5214 /*-----------------------------------------------------------------------*/
5215 /* Change Attribute */
5216 /*-----------------------------------------------------------------------*/
5217 
5218 FRESULT f_chmod (
5219  const TCHAR* path, /* Pointer to the file path */
5220  BYTE attr, /* Attribute bits */
5221  BYTE mask /* Attribute mask to change */
5222 )
5223 {
5224  FRESULT res;
5225  DIR dj;
5226  FATFS *fs;
5227  DEF_NAMBUF
5228 
5229 
5230  res = mount_volume(&path, &fs, FA_WRITE); /* Get logical drive */
5231  if (res == FR_OK) {
5232  dj.obj.fs = fs;
5233  INIT_NAMBUF(fs);
5234  res = follow_path(&dj, path); /* Follow the file path */
5235  if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
5236  if (res == FR_OK) {
5237  mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
5238 #if FF_FS_EXFAT
5239  if (fs->fs_type == FS_EXFAT) {
5240  fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */
5241  res = store_xdir(&dj);
5242  } else
5243 #endif
5244  {
5245  dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
5246  fs->wflag = 1;
5247  }
5248  if (res == FR_OK) {
5249  res = sync_fs(fs);
5250  }
5251  }
5252  FREE_NAMBUF();
5253  }
5254 
5255  LEAVE_FF(fs, res);
5256 }
5257 
5258 
5259 
5260 
5261 /*-----------------------------------------------------------------------*/
5262 /* Change Timestamp */
5263 /*-----------------------------------------------------------------------*/
5264 
5265 FRESULT f_utime (
5266  const TCHAR* path, /* Pointer to the file/directory name */
5267  const FILINFO* fno /* Pointer to the timestamp to be set */
5268 )
5269 {
5270  FRESULT res;
5271  DIR dj;
5272  FATFS *fs;
5273  DEF_NAMBUF
5274 
5275 
5276  res = mount_volume(&path, &fs, FA_WRITE); /* Get logical drive */
5277  if (res == FR_OK) {
5278  dj.obj.fs = fs;
5279  INIT_NAMBUF(fs);
5280  res = follow_path(&dj, path); /* Follow the file path */
5281  if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
5282  if (res == FR_OK) {
5283 #if FF_FS_EXFAT
5284  if (fs->fs_type == FS_EXFAT) {
5285  st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
5286  res = store_xdir(&dj);
5287  } else
5288 #endif
5289  {
5290  st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
5291  fs->wflag = 1;
5292  }
5293  if (res == FR_OK) {
5294  res = sync_fs(fs);
5295  }
5296  }
5297  FREE_NAMBUF();
5298  }
5299 
5300  LEAVE_FF(fs, res);
5301 }
5302 
5303 #endif /* FF_USE_CHMOD && !FF_FS_READONLY */
5304 
5305 
5306 
5307 #if FF_USE_LABEL
5308 /*-----------------------------------------------------------------------*/
5309 /* Get Volume Label */
5310 /*-----------------------------------------------------------------------*/
5311 
5312 FRESULT f_getlabel (
5313  const TCHAR* path, /* Logical drive number */
5314  TCHAR* label, /* Buffer to store the volume label */
5315  DWORD* vsn /* Variable to store the volume serial number */
5316 )
5317 {
5318  FRESULT res;
5319  DIR dj;
5320  FATFS *fs;
5321  UINT si, di;
5322  WCHAR wc;
5323 
5324  /* Get logical drive */
5325  res = mount_volume(&path, &fs, 0);
5326 
5327  /* Get volume label */
5328  if (res == FR_OK && label) {
5329  dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */
5330  res = dir_sdi(&dj, 0);
5331  if (res == FR_OK) {
5332  res = DIR_READ_LABEL(&dj); /* Find a volume label entry */
5333  if (res == FR_OK) {
5334 #if FF_FS_EXFAT
5335  if (fs->fs_type == FS_EXFAT) {
5336  WCHAR hs;
5337 
5338  for (si = di = hs = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */
5339  wc = ld_word(dj.dir + XDIR_Label + si * 2);
5340  if (hs == 0 && IsSurrogate(wc)) { /* Is the code a surrogate? */
5341  hs = wc; continue;
5342  }
5343  wc = put_utf((DWORD)hs << 16 | wc, &label[di], 4);
5344  if (wc == 0) { di = 0; break; }
5345  di += wc;
5346  hs = 0;
5347  }
5348  if (hs != 0) di = 0; /* Broken surrogate pair? */
5349  label[di] = 0;
5350  } else
5351 #endif
5352  {
5353  si = di = 0; /* Extract volume label from AM_VOL entry */
5354  while (si < 11) {
5355  wc = dj.dir[si++];
5356 #if FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode output */
5357  if (dbc_1st((BYTE)wc) && si < 11) wc = wc << 8 | dj.dir[si++]; /* Is it a DBC? */
5358  wc = ff_oem2uni(wc, CODEPAGE); /* Convert it into Unicode */
5359  if (wc != 0) wc = put_utf(wc, &label[di], 4); /* Put it in Unicode */
5360  if (wc == 0) { di = 0; break; }
5361  di += wc;
5362 #else /* ANSI/OEM output */
5363  label[di++] = (TCHAR)wc;
5364 #endif
5365  }
5366  do { /* Truncate trailing spaces */
5367  label[di] = 0;
5368  if (di == 0) break;
5369  } while (label[--di] == ' ');
5370  }
5371  }
5372  }
5373  if (res == FR_NO_FILE) { /* No label entry and return nul string */
5374  label[0] = 0;
5375  res = FR_OK;
5376  }
5377  }
5378 
5379  /* Get volume serial number */
5380  if (res == FR_OK && vsn) {
5381  res = move_window(fs, fs->volbase);
5382  if (res == FR_OK) {
5383  switch (fs->fs_type) {
5384  case FS_EXFAT:
5385  di = BPB_VolIDEx; break;
5386 
5387  case FS_FAT32:
5388  di = BS_VolID32; break;
5389 
5390  default:
5391  di = BS_VolID;
5392  }
5393  *vsn = ld_dword(fs->win + di);
5394  }
5395  }
5396 
5397  LEAVE_FF(fs, res);
5398 }
5399 
5400 
5401 
5402 #if !FF_FS_READONLY
5403 /*-----------------------------------------------------------------------*/
5404 /* Set Volume Label */
5405 /*-----------------------------------------------------------------------*/
5406 
5407 FRESULT f_setlabel (
5408  const TCHAR* label /* Volume label to set with heading logical drive number */
5409 )
5410 {
5411  FRESULT res;
5412  DIR dj;
5413  FATFS *fs;
5414  BYTE dirvn[22];
5415  UINT di;
5416  WCHAR wc;
5417  static const char badchr[] = "+.,;=[]/\\\"*:<>\?|\x7F"; /* [0..] for FAT, [7..] for exFAT */
5418 #if FF_USE_LFN
5419  DWORD dc;
5420 #endif
5421 
5422  /* Get logical drive */
5423  res = mount_volume(&label, &fs, FA_WRITE);
5424  if (res != FR_OK) LEAVE_FF(fs, res);
5425 
5426 #if FF_FS_EXFAT
5427  if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
5428  mem_set(dirvn, 0, 22);
5429  di = 0;
5430  while ((UINT)*label >= ' ') { /* Create volume label */
5431  dc = tchar2uni(&label); /* Get a Unicode character */
5432  if (dc >= 0x10000) {
5433  if (dc == 0xFFFFFFFF || di >= 10) { /* Wrong surrogate or buffer overflow */
5434  dc = 0;
5435  } else {
5436  st_word(dirvn + di * 2, (WCHAR)(dc >> 16)); di++;
5437  }
5438  }
5439  if (dc == 0 || chk_chr(badchr + 7, (int)dc) || di >= 11) { /* Check validity of the volume label */
5440  LEAVE_FF(fs, FR_INVALID_NAME);
5441  }
5442  st_word(dirvn + di * 2, (WCHAR)dc); di++;
5443  }
5444  } else
5445 #endif
5446  { /* On the FAT/FAT32 volume */
5447  mem_set(dirvn, ' ', 11);
5448  di = 0;
5449  while ((UINT)*label >= ' ') { /* Create volume label */
5450 #if FF_USE_LFN
5451  dc = tchar2uni(&label);
5452  wc = (dc < 0x10000) ? ff_uni2oem(ff_wtoupper(dc), CODEPAGE) : 0;
5453 #else /* ANSI/OEM input */
5454  wc = (BYTE)*label++;
5455  if (dbc_1st((BYTE)wc)) wc = dbc_2nd((BYTE)*label) ? wc << 8 | (BYTE)*label++ : 0;
5456  if (IsLower(wc)) wc -= 0x20; /* To upper ASCII characters */
5457 #if FF_CODE_PAGE == 0
5458  if (ExCvt && wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */
5459 #elif FF_CODE_PAGE < 900
5460  if (wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */
5461 #endif
5462 #endif
5463  if (wc == 0 || chk_chr(badchr + 0, (int)wc) || di >= (UINT)((wc >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */
5464  LEAVE_FF(fs, FR_INVALID_NAME);
5465  }
5466  if (wc >= 0x100) dirvn[di++] = (BYTE)(wc >> 8);
5467  dirvn[di++] = (BYTE)wc;
5468  }
5469  if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
5470  while (di && dirvn[di - 1] == ' ') di--; /* Snip trailing spaces */
5471  }
5472 
5473  /* Set volume label */
5474  dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */
5475  res = dir_sdi(&dj, 0);
5476  if (res == FR_OK) {
5477  res = DIR_READ_LABEL(&dj); /* Get volume label entry */
5478  if (res == FR_OK) {
5479  if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) {
5480  dj.dir[XDIR_NumLabel] = (BYTE)di; /* Change the volume label */
5481  mem_cpy(dj.dir + XDIR_Label, dirvn, 22);
5482  } else {
5483  if (di != 0) {
5484  mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */
5485  } else {
5486  dj.dir[DIR_Name] = DDEM; /* Remove the volume label */
5487  }
5488  }
5489  fs->wflag = 1;
5490  res = sync_fs(fs);
5491  } else { /* No volume label entry or an error */
5492  if (res == FR_NO_FILE) {
5493  res = FR_OK;
5494  if (di != 0) { /* Create a volume label entry */
5495  res = dir_alloc(&dj, 1); /* Allocate an entry */
5496  if (res == FR_OK) {
5497  mem_set(dj.dir, 0, SZDIRE); /* Clean the entry */
5498  if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) {
5499  dj.dir[XDIR_Type] = ET_VLABEL; /* Create volume label entry */
5500  dj.dir[XDIR_NumLabel] = (BYTE)di;
5501  mem_cpy(dj.dir + XDIR_Label, dirvn, 22);
5502  } else {
5503  dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */
5504  mem_cpy(dj.dir, dirvn, 11);
5505  }
5506  fs->wflag = 1;
5507  res = sync_fs(fs);
5508  }
5509  }
5510  }
5511  }
5512  }
5513 
5514  LEAVE_FF(fs, res);
5515 }
5516 
5517 #endif /* !FF_FS_READONLY */
5518 #endif /* FF_USE_LABEL */
5519 
5520 
5521 
5522 #if FF_USE_EXPAND && !FF_FS_READONLY
5523 /*-----------------------------------------------------------------------*/
5524 /* Allocate a Contiguous Blocks to the File */
5525 /*-----------------------------------------------------------------------*/
5526 
5527 FRESULT f_expand (
5528  FIL* fp, /* Pointer to the file object */
5529  FSIZE_t fsz, /* File size to be expanded to */
5530  BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */
5531 )
5532 {
5533  FRESULT res;
5534  FATFS *fs;
5535  DWORD n, clst, stcl, scl, ncl, tcl, lclst;
5536 
5537 
5538  res = validate(&fp->obj, &fs); /* Check validity of the file object */
5539  if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
5540  if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);
5541 #if FF_FS_EXFAT
5542  if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */
5543 #endif
5544  n = (DWORD)fs->csize * SS(fs); /* Cluster size */
5545  tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */
5546  stcl = fs->last_clst; lclst = 0;
5547  if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;
5548 
5549 #if FF_FS_EXFAT
5550  if (fs->fs_type == FS_EXFAT) {
5551  scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */
5552  if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */
5553  if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;
5554  if (res == FR_OK) { /* A contiguous free area is found */
5555  if (opt) { /* Allocate it now */
5556  res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */
5557  lclst = scl + tcl - 1;
5558  } else { /* Set it as suggested point for next allocation */
5559  lclst = scl - 1;
5560  }
5561  }
5562  } else
5563 #endif
5564  {
5565  scl = clst = stcl; ncl = 0;
5566  for (;;) { /* Find a contiguous cluster block */
5567  n = get_fat(&fp->obj, clst);
5568  if (++clst >= fs->n_fatent) clst = 2;
5569  if (n == 1) { res = FR_INT_ERR; break; }
5570  if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
5571  if (n == 0) { /* Is it a free cluster? */
5572  if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */
5573  } else {
5574  scl = clst; ncl = 0; /* Not a free cluster */
5575  }
5576  if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */
5577  }
5578  if (res == FR_OK) { /* A contiguous free area is found */
5579  if (opt) { /* Allocate it now */
5580  for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */
5581  res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);
5582  if (res != FR_OK) break;
5583  lclst = clst;
5584  }
5585  } else { /* Set it as suggested point for next allocation */
5586  lclst = scl - 1;
5587  }
5588  }
5589  }
5590 
5591  if (res == FR_OK) {
5592  fs->last_clst = lclst; /* Set suggested start cluster to start next */
5593  if (opt) { /* Is it allocated now? */
5594  fp->obj.sclust = scl; /* Update object allocation information */
5595  fp->obj.objsize = fsz;
5596  if (FF_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */
5597  fp->flag |= FA_MODIFIED;
5598  if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */
5599  fs->free_clst -= tcl;
5600  fs->fsi_flag |= 1;
5601  }
5602  }
5603  }
5604 
5605  LEAVE_FF(fs, res);
5606 }
5607 
5608 #endif /* FF_USE_EXPAND && !FF_FS_READONLY */
5609 
5610 
5611 
5612 #if FF_USE_FORWARD
5613 /*-----------------------------------------------------------------------*/
5614 /* Forward Data to the Stream Directly */
5615 /*-----------------------------------------------------------------------*/
5616 
5617 FRESULT f_forward (
5618  FIL* fp, /* Pointer to the file object */
5619  UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
5620  UINT btf, /* Number of bytes to forward */
5621  UINT* bf /* Pointer to number of bytes forwarded */
5622 )
5623 {
5624  FRESULT res;
5625  FATFS *fs;
5626  DWORD clst;
5627  LBA_t sect;
5628  FSIZE_t remain;
5629  UINT rcnt, csect;
5630  BYTE *dbuf;
5631 
5632 
5633  *bf = 0; /* Clear transfer byte counter */
5634  res = validate(&fp->obj, &fs); /* Check validity of the file object */
5635  if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
5636  if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
5637 
5638  remain = fp->obj.objsize - fp->fptr;
5639  if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
5640 
5641  for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream goes busy */
5642  fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
5643  csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
5644  if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
5645  if (csect == 0) { /* On the cluster boundary? */
5646  clst = (fp->fptr == 0) ? /* On the top of the file? */
5647  fp->obj.sclust : get_fat(&fp->obj, fp->clust);
5648  if (clst <= 1) ABORT(fs, FR_INT_ERR);
5649  if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
5650  fp->clust = clst; /* Update current cluster */
5651  }
5652  }
5653  sect = clst2sect(fs, fp->clust); /* Get current data sector */
5654  if (sect == 0) ABORT(fs, FR_INT_ERR);
5655  sect += csect;
5656 #if FF_FS_TINY
5657  if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */
5658  dbuf = fs->win;
5659 #else
5660  if (fp->sect != sect) { /* Fill sector cache with file data */
5661 #if !FF_FS_READONLY
5662  if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
5663  if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
5664  fp->flag &= (BYTE)~FA_DIRTY;
5665  }
5666 #endif
5667  if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
5668  }
5669  dbuf = fp->buf;
5670 #endif
5671  fp->sect = sect;
5672  rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
5673  if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */
5674  rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */
5675  if (rcnt == 0) ABORT(fs, FR_INT_ERR);
5676  }
5677 
5678  LEAVE_FF(fs, FR_OK);
5679 }
5680 #endif /* FF_USE_FORWARD */
5681 
5682 
5683 
5684 #if !FF_FS_READONLY && FF_USE_MKFS
5685 /*-----------------------------------------------------------------------*/
5686 /* Create an FAT/exFAT volume */
5687 /*-----------------------------------------------------------------------*/
5688 
5689 #define N_SEC_TRACK 63 /* Sectors per track for determination of drive CHS */
5690 #define GPT_ALIGN 0x100000 /* Alignment of partitions in GPT [byte] (>=128KB) */
5691 #define GPT_ITEMS 128 /* Number of GPT table size (>=128, sector aligned) */
5692 
5693 
5694 /* Create partitions on the physical drive */
5695 
5696 static FRESULT create_partition (
5697  BYTE drv, /* Physical drive number */
5698  const LBA_t plst[], /* Partition list */
5699  UINT sys, /* System ID (for only MBR, temp setting) and bit8:GPT */
5700  BYTE* buf /* Working buffer for a sector */
5701 )
5702 {
5703  UINT i, cy;
5704  LBA_t sz_drv;
5705  DWORD sz_drv32, s_lba32, n_lba32;
5706  BYTE *pte, hd, n_hd, sc, n_sc;
5707 
5708  /* Get drive size */
5709  if (disk_ioctl(drv, GET_SECTOR_COUNT, &sz_drv) != RES_OK) return FR_DISK_ERR;
5710 
5711 #if FF_LBA64
5712  if (sz_drv >= FF_MIN_GPT) { /* Create partitions in GPT */
5713  WORD ss;
5714  UINT sz_pt, pi, si, ofs;
5715  DWORD bcc, rnd, align;
5716  QWORD s_lba64, n_lba64, sz_pool, s_bpt;
5717  static const BYTE gpt_mbr[16] = {0x00, 0x00, 0x02, 0x00, 0xEE, 0xFE, 0xFF, 0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF};
5718 
5719 #if FF_MAX_SS != FF_MIN_SS
5720  if (disk_ioctl(drv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR; /* Get sector size */
5721  if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
5722 #else
5723  ss = FF_MAX_SS;
5724 #endif
5725  rnd = GET_FATTIME(); /* Random seed */
5726  align = GPT_ALIGN / ss; /* Partition alignment [sector] */
5727  sz_pt = GPT_ITEMS * SZ_GPTE / ss; /* Size of PT [sector] */
5728  s_bpt = sz_drv - sz_pt - 1; /* Backup PT start sector */
5729  s_lba64 = 2 + sz_pt; /* First allocatable sector */
5730  sz_pool = s_bpt - s_lba64; /* Size of allocatable area */
5731  bcc = 0xFFFFFFFF; n_lba64 = 1;
5732  pi = si = 0; /* partition table index, size table index */
5733  do {
5734  if (pi * SZ_GPTE % ss == 0) mem_set(buf, 0, ss); /* Clean the buffer if needed */
5735  if (n_lba64 != 0) { /* Is the size table not termintated? */
5736  s_lba64 = (s_lba64 + align - 1) & ((QWORD)0 - align); /* Align partition start */
5737  n_lba64 = plst[si++]; /* Get a partition size */
5738  if (n_lba64 <= 100) { /* Is the size in percentage? */
5739  n_lba64 = sz_pool * n_lba64 / 100;
5740  n_lba64 = (n_lba64 + align - 1) & ((QWORD)0 - align); /* Align partition end (only if in percentage) */
5741  }
5742  if (s_lba64 + n_lba64 > s_bpt) { /* Clip at end of the pool */
5743  n_lba64 = (s_lba64 < s_bpt) ? s_bpt - s_lba64 : 0;
5744  }
5745  }
5746  if (n_lba64 != 0) { /* Add a partition? */
5747  ofs = pi * SZ_GPTE % ss;
5748  mem_cpy(buf + ofs + GPTE_PtGuid, GUID_MS_Basic, 16); /* Partition GUID (Microsoft Basic Data) */
5749  rnd = make_rand(rnd, buf + ofs + GPTE_UpGuid, 16); /* Unique partition GUID */
5750  st_qword(buf + ofs + GPTE_FstLba, s_lba64); /* Partition start LBA */
5751  st_qword(buf + ofs + GPTE_LstLba, s_lba64 + n_lba64 - 1); /* Partition end LBA */
5752  s_lba64 += n_lba64; /* Next partition LBA */
5753  }
5754  if ((pi + 1) * SZ_GPTE % ss == 0) { /* Write the buffer if it is filled up */
5755  for (i = 0; i < ss; bcc = crc32(bcc, buf[i++])) ; /* Calculate table check sum */
5756  if (disk_write(drv, buf, 2 + pi * SZ_GPTE / ss, 1) != RES_OK) return FR_DISK_ERR; /* Primary table */
5757  if (disk_write(drv, buf, s_bpt + pi * SZ_GPTE / ss, 1) != RES_OK) return FR_DISK_ERR; /* Secondary table */
5758  }
5759  } while (++pi < GPT_ITEMS);
5760 
5761  /* Create primary GPT header */
5762  mem_set(buf, 0, ss);
5763  mem_cpy(buf + GPTH_Sign, "EFI PART" "\0\0\1\0" "\x5C\0\0", 16); /* Signature, version (1.0) and size (92) */
5764  st_dword(buf + GPTH_PtBcc, ~bcc); /* Table check sum */
5765  st_qword(buf + GPTH_CurLba, 1); /* LBA of this header */
5766  st_qword(buf + GPTH_BakLba, sz_drv - 1); /* LBA of another header */
5767  st_qword(buf + GPTH_FstLba, 2 + sz_pt); /* LBA of first allocatable sector */
5768  st_qword(buf + GPTH_LstLba, s_bpt - 1); /* LBA of last allocatable sector */
5769  st_dword(buf + GPTH_PteSize, SZ_GPTE); /* Size of a table entry */
5770  st_dword(buf + GPTH_PtNum, GPT_ITEMS); /* Number of table entries */
5771  st_dword(buf + GPTH_PtOfs, 2); /* LBA of this table */
5772  rnd = make_rand(rnd, buf + GPTH_DskGuid, 16); /* Disk GUID */
5773  for (i = 0, bcc= 0xFFFFFFFF; i < 92; bcc = crc32(bcc, buf[i++])) ; /* Calculate header check sum */
5774  st_dword(buf + GPTH_Bcc, ~bcc); /* Header check sum */
5775  if (disk_write(drv, buf, 1, 1) != RES_OK) return FR_DISK_ERR;
5776 
5777  /* Create secondary GPT header */
5778  st_qword(buf + GPTH_CurLba, sz_drv - 1); /* LBA of this header */
5779  st_qword(buf + GPTH_BakLba, 1); /* LBA of another header */
5780  st_qword(buf + GPTH_PtOfs, s_bpt); /* LBA of this table */
5781  st_dword(buf + GPTH_Bcc, 0);
5782  for (i = 0, bcc= 0xFFFFFFFF; i < 92; bcc = crc32(bcc, buf[i++])) ; /* Calculate header check sum */
5783  st_dword(buf + GPTH_Bcc, ~bcc); /* Header check sum */
5784  if (disk_write(drv, buf, sz_drv - 1, 1) != RES_OK) return FR_DISK_ERR;
5785 
5786  /* Create protective MBR */
5787  mem_set(buf, 0, ss);
5788  mem_cpy(buf + MBR_Table, gpt_mbr, 16); /* Create a GPT partition */
5789  st_word(buf + BS_55AA, 0xAA55);
5790  if (disk_write(drv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;
5791 
5792  } else
5793 #endif
5794  { /* Create partitions in MBR */
5795  sz_drv32 = (DWORD)sz_drv;
5796  n_sc = N_SEC_TRACK; /* Determine drive CHS without any consideration of the drive geometry */
5797  for (n_hd = 8; n_hd != 0 && sz_drv32 / n_hd / n_sc > 1024; n_hd *= 2) ;
5798  if (n_hd == 0) n_hd = 255; /* Number of heads needs to be <256 */
5799 
5800  mem_set(buf, 0, FF_MAX_SS); /* Clear MBR */
5801  pte = buf + MBR_Table; /* Partition table in the MBR */
5802  for (i = 0, s_lba32 = n_sc; i < 4 && s_lba32 != 0 && s_lba32 < sz_drv32; i++, s_lba32 += n_lba32) {
5803  n_lba32 = (DWORD)plst[i]; /* Get partition size */
5804  if (n_lba32 <= 100) n_lba32 = (n_lba32 == 100) ? sz_drv32 : sz_drv32 / 100 * n_lba32; /* Size in percentage? */
5805  if (s_lba32 + n_lba32 > sz_drv32 || s_lba32 + n_lba32 < s_lba32) n_lba32 = sz_drv32 - s_lba32; /* Clip at drive size */
5806  if (n_lba32 == 0) break; /* End of table or no sector to allocate? */
5807 
5808  st_dword(pte + PTE_StLba, s_lba32); /* Start LBA */
5809  st_dword(pte + PTE_SizLba, n_lba32); /* Number of sectors */
5810  pte[PTE_System] = (BYTE)sys; /* System type */
5811 
5812  cy = (UINT)(s_lba32 / n_sc / n_hd); /* Start cylinder */
5813  hd = (BYTE)(s_lba32 / n_sc % n_hd); /* Start head */
5814  sc = (BYTE)(s_lba32 % n_sc + 1); /* Start sector */
5815  pte[PTE_StHead] = hd;
5816  pte[PTE_StSec] = (BYTE)((cy >> 2 & 0xC0) | sc);
5817  pte[PTE_StCyl] = (BYTE)cy;
5818 
5819  cy = (UINT)((s_lba32 + n_lba32 - 1) / n_sc / n_hd); /* End cylinder */
5820  hd = (BYTE)((s_lba32 + n_lba32 - 1) / n_sc % n_hd); /* End head */
5821  sc = (BYTE)((s_lba32 + n_lba32 - 1) % n_sc + 1); /* End sector */
5822  pte[PTE_EdHead] = hd;
5823  pte[PTE_EdSec] = (BYTE)((cy >> 2 & 0xC0) | sc);
5824  pte[PTE_EdCyl] = (BYTE)cy;
5825 
5826  pte += SZ_PTE; /* Next entry */
5827  }
5828 
5829  st_word(buf + BS_55AA, 0xAA55); /* MBR signature */
5830  if (disk_write(drv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */
5831  }
5832 
5833  return FR_OK;
5834 }
5835 
5836 
5837 
5838 FRESULT f_mkfs (
5839  const TCHAR* path, /* Logical drive number */
5840  const MKFS_PARM* opt, /* Format options */
5841  void* work, /* Pointer to working buffer (null: use heap memory) */
5842  UINT len /* Size of working buffer [byte] */
5843 )
5844 {
5845  static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT volume (4Ks unit) */
5846  static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */
5847  static const MKFS_PARM defopt = {FM_ANY, 0, 0, 0, 0}; /* Default parameter */
5848  BYTE fsopt, fsty, sys, *buf, *pte, pdrv, ipart;
5849  WORD ss; /* Sector size */
5850  DWORD sz_buf, sz_blk, n_clst, pau, nsect, n;
5851  LBA_t sz_vol, b_vol, b_fat, b_data; /* Size of volume, Base LBA of volume, fat, data */
5852  LBA_t sect, lba[2];
5853  DWORD sz_rsv, sz_fat, sz_dir, sz_au; /* Size of reserved, fat, dir, data, cluster */
5854  UINT n_fat, n_root, i; /* Index, Number of FATs and Number of roor dir entries */
5855  int vol;
5856  DSTATUS ds;
5857  FRESULT fr;
5858 
5859 
5860  /* Check mounted drive and clear work area */
5861  vol = get_ldnumber(&path); /* Get target logical drive */
5862  if (vol < 0) return FR_INVALID_DRIVE;
5863  if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear the fs object if mounted */
5864  pdrv = LD2PD(vol); /* Physical drive */
5865  ipart = LD2PT(vol); /* Partition (0:create as new, 1..:get from partition table) */
5866  if (!opt) opt = &defopt; /* Use default parameter if it is not given */
5867 
5868  /* Get physical drive status (sz_drv, sz_blk, ss) */
5869  ds = disk_initialize(pdrv);
5870  if (ds & STA_NOINIT) return FR_NOT_READY;
5871  if (ds & STA_PROTECT) return FR_WRITE_PROTECTED;
5872  sz_blk = opt->align;
5873  if (sz_blk == 0 && disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK) sz_blk = 1;
5874  if (sz_blk == 0 || sz_blk > 0x8000 || (sz_blk & (sz_blk - 1))) sz_blk = 1;
5875 #if FF_MAX_SS != FF_MIN_SS
5876  if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
5877  if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
5878 #else
5879  ss = FF_MAX_SS;
5880 #endif
5881  /* Options for FAT sub-type and FAT parameters */
5882  fsopt = opt->fmt & (FM_ANY | FM_SFD);
5883  n_fat = (opt->n_fat >= 1 && opt->n_fat <= 2) ? opt->n_fat : 1;
5884  n_root = (opt->n_root >= 1 && opt->n_root <= 32768 && (opt->n_root % (ss / SZDIRE)) == 0) ? opt->n_root : 512;
5885  sz_au = (opt->au_size <= 0x1000000 && (opt->au_size & (opt->au_size - 1)) == 0) ? opt->au_size : 0;
5886  sz_au /= ss; /* Byte --> Sector */
5887 
5888  /* Get working buffer */
5889  sz_buf = len / ss; /* Size of working buffer [sector] */
5890  if (sz_buf == 0) return FR_NOT_ENOUGH_CORE;
5891  buf = (BYTE*)work; /* Working buffer */
5892 #if FF_USE_LFN == 3
5893  if (!buf) buf = ff_memalloc(sz_buf * ss); /* Use heap memory for working buffer */
5894 #endif
5895  if (!buf) return FR_NOT_ENOUGH_CORE;
5896 
5897  /* Determine where the volume to be located (b_vol, sz_vol) */
5898  b_vol = sz_vol = 0;
5899  if (FF_MULTI_PARTITION && ipart != 0) { /* Is the volume associated with any specific partition? */
5900  /* Get partition location from the existing partition table */
5901  if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Load MBR */
5902  if (ld_word(buf + BS_55AA) != 0xAA55) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if MBR is valid */
5903 #if FF_LBA64
5904  if (buf[MBR_Table + PTE_System] == 0xEE) { /* GPT protective MBR? */
5905  DWORD n_ent, ofs;
5906  QWORD pt_lba;
5907 
5908  /* Get the partition location from GPT */
5909  if (disk_read(pdrv, buf, 1, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Load GPT header sector (next to MBR) */
5910  if (!test_gpt_header(buf)) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if GPT header is valid */
5911  n_ent = ld_dword(buf + GPTH_PtNum); /* Number of entries */
5912  pt_lba = ld_qword(buf + GPTH_PtOfs); /* Table start sector */
5913  ofs = i = 0;
5914  while (n_ent) { /* Find MS Basic partition with order of ipart */
5915  if (ofs == 0 && disk_read(pdrv, buf, pt_lba++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Get PT sector */
5916  if (!mem_cmp(buf + ofs + GPTE_PtGuid, GUID_MS_Basic, 16) && ++i == ipart) { /* MS basic data partition? */
5917  b_vol = ld_qword(buf + ofs + GPTE_FstLba);
5918  sz_vol = ld_qword(buf + ofs + GPTE_LstLba) - b_vol + 1;
5919  break;
5920  }
5921  n_ent--; ofs = (ofs + SZ_GPTE) % ss; /* Next entry */
5922  }
5923  if (n_ent == 0) LEAVE_MKFS(FR_MKFS_ABORTED); /* Partition not found */
5924  fsopt |= 0x80; /* Partitioning is in GPT */
5925  } else
5926 #endif
5927  { /* Get the partition location from MBR partition table */
5928  pte = buf + (MBR_Table + (ipart - 1) * SZ_PTE);
5929  if (ipart > 4 || pte[PTE_System] == 0) LEAVE_MKFS(FR_MKFS_ABORTED); /* No partition? */
5930  b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */
5931  sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */
5932  }
5933  } else { /* The volume is associated with a physical drive */
5934  if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
5935  if (!(fsopt & FM_SFD)) { /* To be partitioned? */
5936  /* Create a single-partition on the drive in this function */
5937 #if FF_LBA64
5938  if (sz_vol >= FF_MIN_GPT) { /* Which partition type to create, MBR or GPT? */
5939  fsopt |= 0x80; /* Partitioning is in GPT */
5940  b_vol = GPT_ALIGN / ss; sz_vol -= b_vol + GPT_ITEMS * SZ_GPTE / ss + 1; /* Estimated partition offset and size */
5941  } else
5942 #endif
5943  { /* Partitioning is in MBR */
5944  if (sz_vol > N_SEC_TRACK) {
5945  b_vol = N_SEC_TRACK; sz_vol -= b_vol; /* Estimated partition offset and size */
5946  }
5947  }
5948  }
5949  }
5950  if (sz_vol < 128) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if volume size is >=128s */
5951 
5952  /* Now start to create a FAT volume at b_vol and sz_vol */
5953 
5954  do { /* Pre-determine the FAT type */
5955  if (FF_FS_EXFAT && (fsopt & FM_EXFAT)) { /* exFAT possible? */
5956  if ((fsopt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || sz_au > 128) { /* exFAT only, vol >= 64MS or sz_au > 128S ? */
5957  fsty = FS_EXFAT; break;
5958  }
5959  }
5960 #if FF_LBA64
5961  if (sz_vol >= 0x100000000) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too large volume for FAT/FAT32 */
5962 #endif
5963  if (sz_au > 128) sz_au = 128; /* Invalid AU for FAT/FAT32? */
5964  if (fsopt & FM_FAT32) { /* FAT32 possible? */
5965  if (!(fsopt & FM_FAT)) { /* no-FAT? */
5966  fsty = FS_FAT32; break;
5967  }
5968  }
5969  if (!(fsopt & FM_FAT)) LEAVE_MKFS(FR_INVALID_PARAMETER); /* no-FAT? */
5970  fsty = FS_FAT16;
5971  } while (0);
5972 
5973 #if FF_FS_EXFAT
5974  if (fsty == FS_EXFAT) { /* Create an exFAT volume */
5975  DWORD szb_bit, szb_case, sum, nb, cl, tbl[3];
5976  WCHAR ch, si;
5977  UINT j, st;
5978  BYTE b;
5979 
5980  if (sz_vol < 0x1000) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume for exFAT? */
5981 #if FF_USE_TRIM
5982  lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1; /* Inform storage device that the volume area may be erased */
5983  disk_ioctl(pdrv, CTRL_TRIM, lba);
5984 #endif
5985  /* Determine FAT location, data location and number of clusters */
5986  if (sz_au == 0) { /* AU auto-selection */
5987  sz_au = 8;
5988  if (sz_vol >= 0x80000) sz_au = 64; /* >= 512Ks */
5989  if (sz_vol >= 0x4000000) sz_au = 256; /* >= 64Ms */
5990  }
5991  b_fat = b_vol + 32; /* FAT start at offset 32 */
5992  sz_fat = (DWORD)((sz_vol / sz_au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */
5993  b_data = (b_fat + sz_fat + sz_blk - 1) & ~((LBA_t)sz_blk - 1); /* Align data area to the erase block boundary */
5994  if (b_data - b_vol >= sz_vol / 2) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume? */
5995  n_clst = (DWORD)(sz_vol - (b_data - b_vol)) / sz_au; /* Number of clusters */
5996  if (n_clst <16) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too few clusters? */
5997  if (n_clst > MAX_EXFAT) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too many clusters? */
5998 
5999  szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */
6000  tbl[0] = (szb_bit + sz_au * ss - 1) / (sz_au * ss); /* Number of allocation bitmap clusters */
6001 
6002  /* Create a compressed up-case table */
6003  sect = b_data + sz_au * tbl[0]; /* Table start sector */
6004  sum = 0; /* Table checksum to be stored in the 82 entry */
6005  st = 0; si = 0; i = 0; j = 0; szb_case = 0;
6006  do {
6007  switch (st) {
6008  case 0:
6009  ch = (WCHAR)ff_wtoupper(si); /* Get an up-case char */
6010  if (ch != si) {
6011  si++; break; /* Store the up-case char if exist */
6012  }
6013  for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */
6014  if (j >= 128) {
6015  ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */
6016  }
6017  st = 1; /* Do not compress short run */
6018  /* go to next case */
6019  case 1:
6020  ch = si++; /* Fill the short run */
6021  if (--j == 0) st = 0;
6022  break;
6023 
6024  default:
6025  ch = (WCHAR)j; si += (WCHAR)j; /* Number of chars to skip */
6026  st = 0;
6027  }
6028  sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */
6029  sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);
6030  i += 2; szb_case += 2;
6031  if (si == 0 || i == sz_buf * ss) { /* Write buffered data when buffer full or end of process */
6032  n = (i + ss - 1) / ss;
6033  if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6034  sect += n; i = 0;
6035  }
6036  } while (si);
6037  tbl[1] = (szb_case + sz_au * ss - 1) / (sz_au * ss); /* Number of up-case table clusters */
6038  tbl[2] = 1; /* Number of root dir clusters */
6039 
6040  /* Initialize the allocation bitmap */
6041  sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */
6042  nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */
6043  do {
6044  mem_set(buf, 0, sz_buf * ss);
6045  for (i = 0; nb >= 8 && i < sz_buf * ss; buf[i++] = 0xFF, nb -= 8) ;
6046  for (b = 1; nb != 0 && i < sz_buf * ss; buf[i] |= b, b <<= 1, nb--) ;
6047  n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
6048  if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6049  sect += n; nsect -= n;
6050  } while (nsect);
6051 
6052  /* Initialize the FAT */
6053  sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */
6054  j = nb = cl = 0;
6055  do {
6056  mem_set(buf, 0, sz_buf * ss); i = 0; /* Clear work area and reset write index */
6057  if (cl == 0) { /* Set FAT [0] and FAT[1] */
6058  st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;
6059  st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;
6060  }
6061  do { /* Create chains of bitmap, up-case and root dir */
6062  while (nb != 0 && i < sz_buf * ss) { /* Create a chain */
6063  st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);
6064  i += 4; cl++; nb--;
6065  }
6066  if (nb == 0 && j < 3) nb = tbl[j++]; /* Next chain */
6067  } while (nb != 0 && i < sz_buf * ss);
6068  n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */
6069  if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6070  sect += n; nsect -= n;
6071  } while (nsect);
6072 
6073  /* Initialize the root directory */
6074  mem_set(buf, 0, sz_buf * ss);
6075  buf[SZDIRE * 0 + 0] = ET_VLABEL; /* Volume label entry (no label) */
6076  buf[SZDIRE * 1 + 0] = ET_BITMAP; /* Bitmap entry */
6077  st_dword(buf + SZDIRE * 1 + 20, 2); /* cluster */
6078  st_dword(buf + SZDIRE * 1 + 24, szb_bit); /* size */
6079  buf[SZDIRE * 2 + 0] = ET_UPCASE; /* Up-case table entry */
6080  st_dword(buf + SZDIRE * 2 + 4, sum); /* sum */
6081  st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]); /* cluster */
6082  st_dword(buf + SZDIRE * 2 + 24, szb_case); /* size */
6083  sect = b_data + sz_au * (tbl[0] + tbl[1]); nsect = sz_au; /* Start of the root directory and number of sectors */
6084  do { /* Fill root directory sectors */
6085  n = (nsect > sz_buf) ? sz_buf : nsect;
6086  if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6087  mem_set(buf, 0, ss);
6088  sect += n; nsect -= n;
6089  } while (nsect);
6090 
6091  /* Create two set of the exFAT VBR blocks */
6092  sect = b_vol;
6093  for (n = 0; n < 2; n++) {
6094  /* Main record (+0) */
6095  mem_set(buf, 0, ss);
6096  mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */
6097  st_qword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */
6098  st_qword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */
6099  st_dword(buf + BPB_FatOfsEx, (DWORD)(b_fat - b_vol)); /* FAT offset [sector] */
6100  st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */
6101  st_dword(buf + BPB_DataOfsEx, (DWORD)(b_data - b_vol)); /* Data offset [sector] */
6102  st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */
6103  st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */
6104  st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */
6105  st_word(buf + BPB_FSVerEx, 0x100); /* Filesystem version (1.00) */
6106  for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */
6107  for (buf[BPB_SecPerClusEx] = 0, i = sz_au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */
6108  buf[BPB_NumFATsEx] = 1; /* Number of FATs */
6109  buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */
6110  st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */
6111  st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */
6112  for (i = sum = 0; i < ss; i++) { /* VBR checksum */
6113  if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);
6114  }
6115  if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6116  /* Extended bootstrap record (+1..+8) */
6117  mem_set(buf, 0, ss);
6118  st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */
6119  for (j = 1; j < 9; j++) {
6120  for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
6121  if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6122  }
6123  /* OEM/Reserved record (+9..+10) */
6124  mem_set(buf, 0, ss);
6125  for ( ; j < 11; j++) {
6126  for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */
6127  if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6128  }
6129  /* Sum record (+11) */
6130  for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */
6131  if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6132  }
6133 
6134  } else
6135 #endif /* FF_FS_EXFAT */
6136  { /* Create an FAT/FAT32 volume */
6137  do {
6138  pau = sz_au;
6139  /* Pre-determine number of clusters and FAT sub-type */
6140  if (fsty == FS_FAT32) { /* FAT32 volume */
6141  if (pau == 0) { /* AU auto-selection */
6142  n = (DWORD)sz_vol / 0x20000; /* Volume size in unit of 128KS */
6143  for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */
6144  }
6145  n_clst = (DWORD)sz_vol / pau; /* Number of clusters */
6146  sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */
6147  sz_rsv = 32; /* Number of reserved sectors */
6148  sz_dir = 0; /* No static directory */
6149  if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) LEAVE_MKFS(FR_MKFS_ABORTED);
6150  } else { /* FAT volume */
6151  if (pau == 0) { /* au auto-selection */
6152  n = (DWORD)sz_vol / 0x1000; /* Volume size in unit of 4KS */
6153  for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */
6154  }
6155  n_clst = (DWORD)sz_vol / pau;
6156  if (n_clst > MAX_FAT12) {
6157  n = n_clst * 2 + 4; /* FAT size [byte] */
6158  } else {
6159  fsty = FS_FAT12;
6160  n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */
6161  }
6162  sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */
6163  sz_rsv = 1; /* Number of reserved sectors */
6164  sz_dir = (DWORD)n_root * SZDIRE / ss; /* Root dir size [sector] */
6165  }
6166  b_fat = b_vol + sz_rsv; /* FAT base */
6167  b_data = b_fat + sz_fat * n_fat + sz_dir; /* Data base */
6168 
6169  /* Align data area to erase block boundary (for flash memory media) */
6170  n = (DWORD)(((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data); /* Sectors to next nearest from current data base */
6171  if (fsty == FS_FAT32) { /* FAT32: Move FAT */
6172  sz_rsv += n; b_fat += n;
6173  } else { /* FAT: Expand FAT */
6174  if (n % n_fat) { /* Adjust fractional error if needed */
6175  n--; sz_rsv++; b_fat++;
6176  }
6177  sz_fat += n / n_fat;
6178  }
6179 
6180  /* Determine number of clusters and final check of validity of the FAT sub-type */
6181  if (sz_vol < b_data + pau * 16 - b_vol) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume? */
6182  n_clst = ((DWORD)sz_vol - sz_rsv - sz_fat * n_fat - sz_dir) / pau;
6183  if (fsty == FS_FAT32) {
6184  if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32? */
6185  if (sz_au == 0 && (sz_au = pau / 2) != 0) continue; /* Adjust cluster size and retry */
6186  LEAVE_MKFS(FR_MKFS_ABORTED);
6187  }
6188  }
6189  if (fsty == FS_FAT16) {
6190  if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */
6191  if (sz_au == 0 && (pau * 2) <= 64) {
6192  sz_au = pau * 2; continue; /* Adjust cluster size and retry */
6193  }
6194  if ((fsopt & FM_FAT32)) {
6195  fsty = FS_FAT32; continue; /* Switch type to FAT32 and retry */
6196  }
6197  if (sz_au == 0 && (sz_au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
6198  LEAVE_MKFS(FR_MKFS_ABORTED);
6199  }
6200  if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */
6201  if (sz_au == 0 && (sz_au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
6202  LEAVE_MKFS(FR_MKFS_ABORTED);
6203  }
6204  }
6205  if (fsty == FS_FAT12 && n_clst > MAX_FAT12) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too many clusters for FAT12 */
6206 
6207  /* Ok, it is the valid cluster configuration */
6208  break;
6209  } while (1);
6210 
6211 #if FF_USE_TRIM
6212  lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1; /* Inform storage device that the volume area may be erased */
6213  disk_ioctl(pdrv, CTRL_TRIM, lba);
6214 #endif
6215  /* Create FAT VBR */
6216  mem_set(buf, 0, ss);
6217  mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */
6218  st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */
6219  buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */
6220  st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */
6221  buf[BPB_NumFATs] = (BYTE)n_fat; /* Number of FATs */
6222  st_word(buf + BPB_RootEntCnt, (WORD)((fsty == FS_FAT32) ? 0 : n_root)); /* Number of root directory entries */
6223  if (sz_vol < 0x10000) {
6224  st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */
6225  } else {
6226  st_dword(buf + BPB_TotSec32, (DWORD)sz_vol); /* Volume size in 32-bit LBA */
6227  }
6228  buf[BPB_Media] = 0xF8; /* Media descriptor byte */
6229  st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */
6230  st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */
6231  st_dword(buf + BPB_HiddSec, (DWORD)b_vol); /* Volume offset in the physical drive [sector] */
6232  if (fsty == FS_FAT32) {
6233  st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */
6234  st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */
6235  st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */
6236  st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */
6237  st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */
6238  buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */
6239  buf[BS_BootSig32] = 0x29; /* Extended boot signature */
6240  mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
6241  } else {
6242  st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */
6243  st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */
6244  buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */
6245  buf[BS_BootSig] = 0x29; /* Extended boot signature */
6246  mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
6247  }
6248  st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */
6249  if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Write it to the VBR sector */
6250 
6251  /* Create FSINFO record if needed */
6252  if (fsty == FS_FAT32) {
6253  disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */
6254  mem_set(buf, 0, ss);
6255  st_dword(buf + FSI_LeadSig, 0x41615252);
6256  st_dword(buf + FSI_StrucSig, 0x61417272);
6257  st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
6258  st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */
6259  st_word(buf + BS_55AA, 0xAA55);
6260  disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */
6261  disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */
6262  }
6263 
6264  /* Initialize FAT area */
6265  mem_set(buf, 0, sz_buf * ss);
6266  sect = b_fat; /* FAT start sector */
6267  for (i = 0; i < n_fat; i++) { /* Initialize FATs each */
6268  if (fsty == FS_FAT32) {
6269  st_dword(buf + 0, 0xFFFFFFF8); /* FAT[0] */
6270  st_dword(buf + 4, 0xFFFFFFFF); /* FAT[1] */
6271  st_dword(buf + 8, 0x0FFFFFFF); /* FAT[2] (root directory) */
6272  } else {
6273  st_dword(buf + 0, (fsty == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* FAT[0] and FAT[1] */
6274  }
6275  nsect = sz_fat; /* Number of FAT sectors */
6276  do { /* Fill FAT sectors */
6277  n = (nsect > sz_buf) ? sz_buf : nsect;
6278  if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6279  mem_set(buf, 0, ss); /* Rest of FAT all are cleared */
6280  sect += n; nsect -= n;
6281  } while (nsect);
6282  }
6283 
6284  /* Initialize root directory (fill with zero) */
6285  nsect = (fsty == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */
6286  do {
6287  n = (nsect > sz_buf) ? sz_buf : nsect;
6288  if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6289  sect += n; nsect -= n;
6290  } while (nsect);
6291  }
6292 
6293  /* A FAT volume has been created here */
6294 
6295  /* Determine system ID in the MBR partition table */
6296  if (FF_FS_EXFAT && fsty == FS_EXFAT) {
6297  sys = 0x07; /* exFAT */
6298  } else {
6299  if (fsty == FS_FAT32) {
6300  sys = 0x0C; /* FAT32X */
6301  } else {
6302  if (sz_vol >= 0x10000) {
6303  sys = 0x06; /* FAT12/16 (large) */
6304  } else {
6305  sys = (fsty == FS_FAT16) ? 0x04 : 0x01; /* FAT16 : FAT12 */
6306  }
6307  }
6308  }
6309 
6310  /* Update partition information */
6311  if (FF_MULTI_PARTITION && ipart != 0) { /* Volume is in the existing partition */
6312  if (!FF_LBA64 || !(fsopt & 0x80)) {
6313  /* Update system ID in the partition table */
6314  if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Read the MBR */
6315  buf[MBR_Table + (ipart - 1) * SZ_PTE + PTE_System] = sys; /* Set system ID */
6316  if (disk_write(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Write it back to the MBR */
6317  }
6318  } else { /* Volume as a new single partition */
6319  if (!(fsopt & FM_SFD)) { /* Create partition table if not in SFD */
6320  lba[0] = sz_vol, lba[1] = 0;
6321  fr = create_partition(pdrv, lba, sys, buf);
6322  if (fr != FR_OK) LEAVE_MKFS(fr);
6323  }
6324  }
6325 
6326  if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
6327 
6328  LEAVE_MKFS(FR_OK);
6329 }
6330 
6331 
6332 
6333 
6334 #if FF_MULTI_PARTITION
6335 /*-----------------------------------------------------------------------*/
6336 /* Create Partition Table on the Physical Drive */
6337 /*-----------------------------------------------------------------------*/
6338 
6339 FRESULT f_fdisk (
6340  BYTE pdrv, /* Physical drive number */
6341  const LBA_t ptbl[], /* Pointer to the size table for each partitions */
6342  void* work /* Pointer to the working buffer (null: use heap memory) */
6343 )
6344 {
6345  BYTE *buf = (BYTE*)work;
6346  DSTATUS stat;
6347 
6348 
6349  stat = disk_initialize(pdrv);
6350  if (stat & STA_NOINIT) return FR_NOT_READY;
6351  if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
6352 #if FF_USE_LFN == 3
6353  if (!buf) buf = ff_memalloc(FF_MAX_SS); /* Use heap memory for working buffer */
6354 #endif
6355  if (!buf) return FR_NOT_ENOUGH_CORE;
6356 
6357  LEAVE_MKFS(create_partition(pdrv, ptbl, 0x07, buf));
6358 }
6359 
6360 #endif /* FF_MULTI_PARTITION */
6361 #endif /* !FF_FS_READONLY && FF_USE_MKFS */
6362 
6363 
6364 
6365 
6366 #if FF_USE_STRFUNC
6367 #if FF_USE_LFN && FF_LFN_UNICODE && (FF_STRF_ENCODE < 0 || FF_STRF_ENCODE > 3)
6368 #error Wrong FF_STRF_ENCODE setting
6369 #endif
6370 /*-----------------------------------------------------------------------*/
6371 /* Get a String from the File */
6372 /*-----------------------------------------------------------------------*/
6373 
6374 TCHAR* f_gets (
6375  TCHAR* buff, /* Pointer to the buffer to store read string */
6376  int len, /* Size of string buffer (items) */
6377  FIL* fp /* Pointer to the file object */
6378 )
6379 {
6380  int nc = 0;
6381  TCHAR *p = buff;
6382  BYTE s[4];
6383  UINT rc;
6384  DWORD dc;
6385 #if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE <= 2
6386  WCHAR wc;
6387 #endif
6388 #if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE == 3
6389  UINT ct;
6390 #endif
6391 
6392 #if FF_USE_LFN && FF_LFN_UNICODE /* With code conversion (Unicode API) */
6393  /* Make a room for the character and terminator */
6394  if (FF_LFN_UNICODE == 1) len -= (FF_STRF_ENCODE == 0) ? 1 : 2;
6395  if (FF_LFN_UNICODE == 2) len -= (FF_STRF_ENCODE == 0) ? 3 : 4;
6396  if (FF_LFN_UNICODE == 3) len -= 1;
6397  while (nc < len) {
6398 #if FF_STRF_ENCODE == 0 /* Read a character in ANSI/OEM */
6399  f_read(fp, s, 1, &rc); /* Get a code unit */
6400  if (rc != 1) break; /* EOF? */
6401  wc = s[0];
6402  if (dbc_1st((BYTE)wc)) { /* DBC 1st byte? */
6403  f_read(fp, s, 1, &rc); /* Get DBC 2nd byte */
6404  if (rc != 1 || !dbc_2nd(s[0])) continue; /* Wrong code? */
6405  wc = wc << 8 | s[0];
6406  }
6407  dc = ff_oem2uni(wc, CODEPAGE); /* OEM --> */
6408  if (dc == 0) continue;
6409 #elif FF_STRF_ENCODE == 1 || FF_STRF_ENCODE == 2 /* Read a character in UTF-16LE/BE */
6410  f_read(fp, s, 2, &rc); /* Get a code unit */
6411  if (rc != 2) break; /* EOF? */
6412  dc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];
6413  if (IsSurrogateL(dc)) continue; /* Broken surrogate pair? */
6414  if (IsSurrogateH(dc)) { /* High surrogate? */
6415  f_read(fp, s, 2, &rc); /* Get low surrogate */
6416  if (rc != 2) break; /* EOF? */
6417  wc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];
6418  if (!IsSurrogateL(wc)) continue; /* Broken surrogate pair? */
6419  dc = ((dc & 0x3FF) + 0x40) << 10 | (wc & 0x3FF); /* Merge surrogate pair */
6420  }
6421 #else /* Read a character in UTF-8 */
6422  f_read(fp, s, 1, &rc); /* Get a code unit */
6423  if (rc != 1) break; /* EOF? */
6424  dc = s[0];
6425  if (dc >= 0x80) { /* Multi-byte sequence? */
6426  ct = 0;
6427  if ((dc & 0xE0) == 0xC0) { dc &= 0x1F; ct = 1; } /* 2-byte sequence? */
6428  if ((dc & 0xF0) == 0xE0) { dc &= 0x0F; ct = 2; } /* 3-byte sequence? */
6429  if ((dc & 0xF8) == 0xF0) { dc &= 0x07; ct = 3; } /* 4-byte sequence? */
6430  if (ct == 0) continue;
6431  f_read(fp, s, ct, &rc); /* Get trailing bytes */
6432  if (rc != ct) break;
6433  rc = 0;
6434  do { /* Merge the byte sequence */
6435  if ((s[rc] & 0xC0) != 0x80) break;
6436  dc = dc << 6 | (s[rc] & 0x3F);
6437  } while (++rc < ct);
6438  if (rc != ct || dc < 0x80 || IsSurrogate(dc) || dc >= 0x110000) continue; /* Wrong encoding? */
6439  }
6440 #endif
6441  /* A code point is avaialble in dc to be output */
6442 
6443  if (FF_USE_STRFUNC == 2 && dc == '\r') continue; /* Strip \r off if needed */
6444 #if FF_LFN_UNICODE == 1 || FF_LFN_UNICODE == 3 /* Output it in UTF-16/32 encoding */
6445  if (FF_LFN_UNICODE == 1 && dc >= 0x10000) { /* Out of BMP at UTF-16? */
6446  *p++ = (TCHAR)(0xD800 | ((dc >> 10) - 0x40)); nc++; /* Make and output high surrogate */
6447  dc = 0xDC00 | (dc & 0x3FF); /* Make low surrogate */
6448  }
6449  *p++ = (TCHAR)dc; nc++;
6450  if (dc == '\n') break; /* End of line? */
6451 #elif FF_LFN_UNICODE == 2 /* Output it in UTF-8 encoding */
6452  if (dc < 0x80) { /* Single byte? */
6453  *p++ = (TCHAR)dc;
6454  nc++;
6455  if (dc == '\n') break; /* End of line? */
6456  } else {
6457  if (dc < 0x800) { /* 2-byte sequence? */
6458  *p++ = (TCHAR)(0xC0 | (dc >> 6 & 0x1F));
6459  *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
6460  nc += 2;
6461  } else {
6462  if (dc < 0x10000) { /* 3-byte sequence? */
6463  *p++ = (TCHAR)(0xE0 | (dc >> 12 & 0x0F));
6464  *p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));
6465  *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
6466  nc += 3;
6467  } else { /* 4-byte sequence? */
6468  *p++ = (TCHAR)(0xF0 | (dc >> 18 & 0x07));
6469  *p++ = (TCHAR)(0x80 | (dc >> 12 & 0x3F));
6470  *p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));
6471  *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
6472  nc += 4;
6473  }
6474  }
6475  }
6476 #endif
6477  }
6478 
6479 #else /* Byte-by-byte read without any conversion (ANSI/OEM API) */
6480  len -= 1; /* Make a room for the terminator */
6481  while (nc < len) {
6482  f_read(fp, s, 1, &rc); /* Get a byte */
6483  if (rc != 1) break; /* EOF? */
6484  dc = s[0];
6485  if (FF_USE_STRFUNC == 2 && dc == '\r') continue;
6486  *p++ = (TCHAR)dc; nc++;
6487  if (dc == '\n') break;
6488  }
6489 #endif
6490 
6491  *p = 0; /* Terminate the string */
6492  return nc ? buff : 0; /* When no data read due to EOF or error, return with error. */
6493 }
6494 
6495 
6496 
6497 
6498 #if !FF_FS_READONLY
6499 #include <stdarg.h>
6500 /*-----------------------------------------------------------------------*/
6501 /* Put a Character to the File (sub-functions) */
6502 /*-----------------------------------------------------------------------*/
6503 
6504 /* Putchar output buffer and work area */
6505 
6506 typedef struct {
6507  FIL *fp; /* Ptr to the writing file */
6508  int idx, nchr; /* Write index of buf[] (-1:error), number of encoding units written */
6509 #if FF_USE_LFN && FF_LFN_UNICODE == 1
6510  WCHAR hs;
6511 #elif FF_USE_LFN && FF_LFN_UNICODE == 2
6512  BYTE bs[4];
6513  UINT wi, ct;
6514 #endif
6515  BYTE buf[64]; /* Write buffer */
6516 } putbuff;
6517 
6518 
6519 /* Buffered write with code conversion */
6520 
6521 static void putc_bfd (putbuff* pb, TCHAR c)
6522 {
6523  UINT n;
6524  int i, nc;
6525 #if FF_USE_LFN && FF_LFN_UNICODE
6526  WCHAR hs, wc;
6527 #if FF_LFN_UNICODE == 2
6528  DWORD dc;
6529  TCHAR *tp;
6530 #endif
6531 #endif
6532 
6533  if (FF_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */
6534  putc_bfd(pb, '\r');
6535  }
6536 
6537  i = pb->idx; /* Write index of pb->buf[] */
6538  if (i < 0) return;
6539  nc = pb->nchr; /* Write unit counter */
6540 
6541 #if FF_USE_LFN && FF_LFN_UNICODE
6542 #if FF_LFN_UNICODE == 1 /* UTF-16 input */
6543  if (IsSurrogateH(c)) { /* High surrogate? */
6544  pb->hs = c; return; /* Save it for next */
6545  }
6546  hs = pb->hs; pb->hs = 0;
6547  if (hs != 0) { /* There is a leading high surrogate */
6548  if (!IsSurrogateL(c)) hs = 0; /* Discard high surrogate if not a surrogate pair */
6549  } else {
6550  if (IsSurrogateL(c)) return; /* Discard stray low surrogate */
6551  }
6552  wc = c;
6553 #elif FF_LFN_UNICODE == 2 /* UTF-8 input */
6554  for (;;) {
6555  if (pb->ct == 0) { /* Out of multi-byte sequence? */
6556  pb->bs[pb->wi = 0] = (BYTE)c; /* Save 1st byte */
6557  if ((BYTE)c < 0x80) break; /* Single byte? */
6558  if (((BYTE)c & 0xE0) == 0xC0) pb->ct = 1; /* 2-byte sequence? */
6559  if (((BYTE)c & 0xF0) == 0xE0) pb->ct = 2; /* 3-byte sequence? */
6560  if (((BYTE)c & 0xF1) == 0xF0) pb->ct = 3; /* 4-byte sequence? */
6561  return;
6562  } else { /* In the multi-byte sequence */
6563  if (((BYTE)c & 0xC0) != 0x80) { /* Broken sequence? */
6564  pb->ct = 0; continue;
6565  }
6566  pb->bs[++pb->wi] = (BYTE)c; /* Save the trailing byte */
6567  if (--pb->ct == 0) break; /* End of multi-byte sequence? */
6568  return;
6569  }
6570  }
6571  tp = (TCHAR*)pb->bs;
6572  dc = tchar2uni(&tp); /* UTF-8 ==> UTF-16 */
6573  if (dc == 0xFFFFFFFF) return; /* Wrong code? */
6574  wc = (WCHAR)dc;
6575  hs = (WCHAR)(dc >> 16);
6576 #elif FF_LFN_UNICODE == 3 /* UTF-32 input */
6577  if (IsSurrogate(c) || c >= 0x110000) return; /* Discard invalid code */
6578  if (c >= 0x10000) { /* Out of BMP? */
6579  hs = (WCHAR)(0xD800 | ((c >> 10) - 0x40)); /* Make high surrogate */
6580  wc = 0xDC00 | (c & 0x3FF); /* Make low surrogate */
6581  } else {
6582  hs = 0;
6583  wc = (WCHAR)c;
6584  }
6585 #endif
6586  /* A code point in UTF-16 is available in hs and wc */
6587 
6588 #if FF_STRF_ENCODE == 1 /* Write a code point in UTF-16LE */
6589  if (hs != 0) { /* Surrogate pair? */
6590  st_word(&pb->buf[i], hs);
6591  i += 2;
6592  nc++;
6593  }
6594  st_word(&pb->buf[i], wc);
6595  i += 2;
6596 #elif FF_STRF_ENCODE == 2 /* Write a code point in UTF-16BE */
6597  if (hs != 0) { /* Surrogate pair? */
6598  pb->buf[i++] = (BYTE)(hs >> 8);
6599  pb->buf[i++] = (BYTE)hs;
6600  nc++;
6601  }
6602  pb->buf[i++] = (BYTE)(wc >> 8);
6603  pb->buf[i++] = (BYTE)wc;
6604 #elif FF_STRF_ENCODE == 3 /* Write a code point in UTF-8 */
6605  if (hs != 0) { /* 4-byte sequence? */
6606  nc += 3;
6607  hs = (hs & 0x3FF) + 0x40;
6608  pb->buf[i++] = (BYTE)(0xF0 | hs >> 8);
6609  pb->buf[i++] = (BYTE)(0x80 | (hs >> 2 & 0x3F));
6610  pb->buf[i++] = (BYTE)(0x80 | (hs & 3) << 4 | (wc >> 6 & 0x0F));
6611  pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));
6612  } else {
6613  if (wc < 0x80) { /* Single byte? */
6614  pb->buf[i++] = (BYTE)wc;
6615  } else {
6616  if (wc < 0x800) { /* 2-byte sequence? */
6617  nc += 1;
6618  pb->buf[i++] = (BYTE)(0xC0 | wc >> 6);
6619  } else { /* 3-byte sequence */
6620  nc += 2;
6621  pb->buf[i++] = (BYTE)(0xE0 | wc >> 12);
6622  pb->buf[i++] = (BYTE)(0x80 | (wc >> 6 & 0x3F));
6623  }
6624  pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));
6625  }
6626  }
6627 #else /* Write a code point in ANSI/OEM */
6628  if (hs != 0) return;
6629  wc = ff_uni2oem(wc, CODEPAGE); /* UTF-16 ==> ANSI/OEM */
6630  if (wc == 0) return;
6631  if (wc >= 0x100) {
6632  pb->buf[i++] = (BYTE)(wc >> 8); nc++;
6633  }
6634  pb->buf[i++] = (BYTE)wc;
6635 #endif
6636 
6637 #else /* ANSI/OEM input (without re-encoding) */
6638  pb->buf[i++] = (BYTE)c;
6639 #endif
6640 
6641  if (i >= (int)(sizeof pb->buf) - 4) { /* Write buffered characters to the file */
6642  f_write(pb->fp, pb->buf, (UINT)i, &n);
6643  i = (n == (UINT)i) ? 0 : -1;
6644  }
6645  pb->idx = i;
6646  pb->nchr = nc + 1;
6647 }
6648 
6649 
6650 /* Flush remaining characters in the buffer */
6651 
6652 static int putc_flush (putbuff* pb)
6653 {
6654  UINT nw;
6655 
6656  if ( pb->idx >= 0 /* Flush buffered characters to the file */
6657  && f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK
6658  && (UINT)pb->idx == nw) return pb->nchr;
6659  return EOF;
6660 }
6661 
6662 
6663 /* Initialize write buffer */
6664 
6665 static void putc_init (putbuff* pb, FIL* fp)
6666 {
6667  mem_set(pb, 0, sizeof (putbuff));
6668  pb->fp = fp;
6669 }
6670 
6671 
6672 
6673 int f_putc (
6674  TCHAR c, /* A character to be output */
6675  FIL* fp /* Pointer to the file object */
6676 )
6677 {
6678  putbuff pb;
6679 
6680 
6681  putc_init(&pb, fp);
6682  putc_bfd(&pb, c); /* Put the character */
6683  return putc_flush(&pb);
6684 }
6685 
6686 
6687 
6688 
6689 /*-----------------------------------------------------------------------*/
6690 /* Put a String to the File */
6691 /*-----------------------------------------------------------------------*/
6692 
6693 int f_puts (
6694  const TCHAR* str, /* Pointer to the string to be output */
6695  FIL* fp /* Pointer to the file object */
6696 )
6697 {
6698  putbuff pb;
6699 
6700 
6701  putc_init(&pb, fp);
6702  while (*str) putc_bfd(&pb, *str++); /* Put the string */
6703  return putc_flush(&pb);
6704 }
6705 
6706 
6707 
6708 
6709 /*-----------------------------------------------------------------------*/
6710 /* Put a Formatted String to the File */
6711 /*-----------------------------------------------------------------------*/
6712 
6713 int f_printf (
6714  FIL* fp, /* Pointer to the file object */
6715  const TCHAR* fmt, /* Pointer to the format string */
6716  ... /* Optional arguments... */
6717 )
6718 {
6719  va_list arp;
6720  putbuff pb;
6721  BYTE f, r;
6722  UINT i, j, w;
6723  DWORD v;
6724  TCHAR c, d, str[32], *p;
6725 
6726 
6727  putc_init(&pb, fp);
6728 
6729  va_start(arp, fmt);
6730 
6731  for (;;) {
6732  c = *fmt++;
6733  if (c == 0) break; /* End of string */
6734  if (c != '%') { /* Non escape character */
6735  putc_bfd(&pb, c);
6736  continue;
6737  }
6738  w = f = 0;
6739  c = *fmt++;
6740  if (c == '0') { /* Flag: '0' padding */
6741  f = 1; c = *fmt++;
6742  } else {
6743  if (c == '-') { /* Flag: left justified */
6744  f = 2; c = *fmt++;
6745  }
6746  }
6747  if (c == '*') { /* Minimum width by argument */
6748  w = va_arg(arp, int);
6749  c = *fmt++;
6750  } else {
6751  while (IsDigit(c)) { /* Minimum width */
6752  w = w * 10 + c - '0';
6753  c = *fmt++;
6754  }
6755  }
6756  if (c == 'l' || c == 'L') { /* Type prefix: Size is long int */
6757  f |= 4; c = *fmt++;
6758  }
6759  if (c == 0) break;
6760  d = c;
6761  if (IsLower(d)) d -= 0x20;
6762  switch (d) { /* Atgument type is... */
6763  case 'S' : /* String */
6764  p = va_arg(arp, TCHAR*);
6765  for (j = 0; p[j]; j++) ;
6766  if (!(f & 2)) { /* Right padded */
6767  while (j++ < w) putc_bfd(&pb, ' ') ;
6768  }
6769  while (*p) putc_bfd(&pb, *p++) ; /* String body */
6770  while (j++ < w) putc_bfd(&pb, ' ') ; /* Left padded */
6771  continue;
6772 
6773  case 'C' : /* Character */
6774  putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
6775 
6776  case 'B' : /* Unsigned binary */
6777  r = 2; break;
6778 
6779  case 'O' : /* Unsigned octal */
6780  r = 8; break;
6781 
6782  case 'D' : /* Signed decimal */
6783  case 'U' : /* Unsigned decimal */
6784  r = 10; break;
6785 
6786  case 'X' : /* Unsigned hexdecimal */
6787  r = 16; break;
6788 
6789  default: /* Unknown type (pass-through) */
6790  putc_bfd(&pb, c); continue;
6791  }
6792 
6793  /* Get an argument and put it in numeral */
6794  v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
6795  if (d == 'D' && (v & 0x80000000)) {
6796  v = 0 - v;
6797  f |= 8;
6798  }
6799  i = 0;
6800  do {
6801  d = (TCHAR)(v % r); v /= r;
6802  if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
6803  str[i++] = d + '0';
6804  } while (v && i < sizeof str / sizeof *str);
6805  if (f & 8) str[i++] = '-';
6806  j = i; d = (f & 1) ? '0' : ' ';
6807  if (!(f & 2)) {
6808  while (j++ < w) putc_bfd(&pb, d); /* Right pad */
6809  }
6810  do {
6811  putc_bfd(&pb, str[--i]); /* Number body */
6812  } while (i);
6813  while (j++ < w) putc_bfd(&pb, d); /* Left pad */
6814  }
6815 
6816  va_end(arp);
6817 
6818  return putc_flush(&pb);
6819 }
6820 
6821 #endif /* !FF_FS_READONLY */
6822 #endif /* FF_USE_STRFUNC */
6823 
6824 
6825 
6826 #if FF_CODE_PAGE == 0
6827 /*-----------------------------------------------------------------------*/
6828 /* Set Active Codepage for the Path Name */
6829 /*-----------------------------------------------------------------------*/
6830 
6831 FRESULT f_setcp (
6832  WORD cp /* Value to be set as active code page */
6833 )
6834 {
6835  static const WORD validcp[] = { 437, 720, 737, 771, 775, 850, 852, 857, 860, 861, 862, 863, 864, 865, 866, 869, 932, 936, 949, 950, 0};
6836  static const BYTE* const tables[] = {Ct437, Ct720, Ct737, Ct771, Ct775, Ct850, Ct852, Ct857, Ct860, Ct861, Ct862, Ct863, Ct864, Ct865, Ct866, Ct869, Dc932, Dc936, Dc949, Dc950, 0};
6837  UINT i;
6838 
6839 
6840  for (i = 0; validcp[i] != 0 && validcp[i] != cp; i++) ; /* Find the code page */
6841  if (validcp[i] != cp) return FR_INVALID_PARAMETER; /* Not found? */
6842 
6843  CodePage = cp;
6844  if (cp >= 900) { /* DBCS */
6845  ExCvt = 0;
6846  DbcTbl = tables[i];
6847  } else { /* SBCS */
6848  ExCvt = tables[i];
6849  DbcTbl = 0;
6850  }
6851  return FR_OK;
6852 }
6853 #endif /* FF_CODE_PAGE == 0 */
6854 
dir_read
static FRESULT dir_read(DIR *dp, int vol)
Definition: ff.c:2370
FF_LFN_UNICODE
#define FF_LFN_UNICODE
Definition: ffconf.h:122
FATFS
Definition: ff.h:132
FF_FS_READONLY
#define FF_FS_READONLY
Definition: ffconf.h:11
LfnOfs
static const BYTE LfnOfs[]
Definition: ff.c:514
FR_NOT_ENOUGH_CORE
@ FR_NOT_ENOUGH_CORE
Definition: ff.h:294
FILINFO::ftime
WORD ftime
Definition: ff.h:250
fatfs.h
TBL_CT863
#define TBL_CT863
Definition: ff.c:392
CurrVol
static BYTE CurrVol
Definition: ff.c:469
FA_OPEN_ALWAYS
#define FA_OPEN_ALWAYS
Definition: ff.h:395
create_partition
static FRESULT create_partition(BYTE drv, const LBA_t plst[], UINT sys, BYTE *buf)
Definition: ff.c:5696
stat
POSIX stat structure.
Definition: posix.h:105
XDIR_FstClus
#define XDIR_FstClus
Definition: ff.c:186
BS_BootSig32
#define BS_BootSig32
Definition: ff.c:127
BPB_ZeroedEx
#define BPB_ZeroedEx
Definition: ff.c:133
TCHAR
char TCHAR
Definition: ff.h:99
CTRL_TRIM
#define CTRL_TRIM
Definition: diskio.h:71
BPB_FSVerEx
#define BPB_FSVerEx
Definition: ff.c:142
FSI_Free_Count
#define FSI_Free_Count
Definition: ff.c:196
FATFS::lfnbuf
WCHAR * lfnbuf
Definition: ff.h:145
TBL_CT861
#define TBL_CT861
Definition: ff.c:376
XDIR_FileSize
#define XDIR_FileSize
Definition: ff.c:187
sum_sfn
static BYTE sum_sfn(const BYTE *dir)
Definition: ff.c:2076
NS_LOSS
#define NS_LOSS
Definition: ff.c:74
FFOBJID
Definition: ff.h:182
dir_next
static FRESULT dir_next(DIR *dp, int stretch)
Definition: ff.c:1767
MKFS_PARM
Definition: ff.h:264
FFOBJID::fs
FATFS * fs
Definition: ff.h:183
DIR::dptr
DWORD dptr
Definition: ff.h:230
MKFS_PARM::fmt
BYTE fmt
Definition: ff.h:265
XDIR_ValidFileSize
#define XDIR_ValidFileSize
Definition: ff.c:185
FATFS::wflag
BYTE wflag
Definition: ff.h:136
FR_DISK_ERR
@ FR_DISK_ERR
Definition: ff.h:278
FR_INVALID_OBJECT
@ FR_INVALID_OBJECT
Definition: ff.h:286
DSTATUS
BYTE DSTATUS
Definition: diskio.h:26
XDIR_NumLabel
#define XDIR_NumLabel
Definition: ff.c:168
IsSurrogate
#define IsSurrogate(c)
Definition: ff.c:55
FIL
Definition: ff.h:205
DIR_CrtTime
#define DIR_CrtTime
Definition: ff.c:156
FATFS::n_fats
BYTE n_fats
Definition: ff.h:135
FR_EXIST
@ FR_EXIST
Definition: ff.h:285
IsSurrogateH
#define IsSurrogateH(c)
Definition: ff.c:56
f_write
FRESULT f_write(FIL *fp, const void *buff, UINT btw, UINT *bw)
Definition: ff.c:3990
TBL_CT855
#define TBL_CT855
Definition: ff.c:352
AM_HID
#define AM_HID
Definition: ff.h:416
dbc_2nd
static int dbc_2nd(BYTE c)
Definition: ff.c:757
f_stat
FRESULT f_stat(const TCHAR *path, FILINFO *fno)
Definition: ff.c:4755
dir_sdi
static FRESULT dir_sdi(DIR *dp, DWORD ofs)
Definition: ff.c:1719
NS_EXT
#define NS_EXT
Definition: ff.c:78
FIL::cltbl
DWORD * cltbl
Definition: ff.h:217
f_rename
FRESULT f_rename(const TCHAR *path_old, const TCHAR *path_new)
Definition: ff.c:5108
LDIR_Attr
#define LDIR_Attr
Definition: ff.c:163
LLEF
#define LLEF
Definition: ff.c:192
MAX_DIR
#define MAX_DIR
Definition: ff.c:43
DIR_FstClusHI
#define DIR_FstClusHI
Definition: ff.c:158
DIR::fn
BYTE fn[12]
Definition: ff.h:234
FR_NO_FILE
@ FR_NO_FILE
Definition: ff.h:281
BPB_FSVer32
#define BPB_FSVer32
Definition: ff.c:121
BS_FilSysType32
#define BS_FilSysType32
Definition: ff.c:130
FA_WRITE
#define FA_WRITE
Definition: ff.h:391
MAX_MALLOC
#define MAX_MALLOC
Definition: ff.c:551
LDIR_FstClusLO
#define LDIR_FstClusLO
Definition: ff.c:166
GPTH_PteSize
#define GPTH_PteSize
Definition: ff.c:223
st_dword
static void st_dword(BYTE *ptr, DWORD val)
Definition: ff.c:660
check_fs
static UINT check_fs(FATFS *fs, LBA_t sect)
Definition: ff.c:3299
DIR_FileSize
#define DIR_FileSize
Definition: ff.c:161
XDIR_AccTime
#define XDIR_AccTime
Definition: ff.c:176
ff_wtoupper
DWORD ff_wtoupper(DWORD uni)
Definition: ffunicode.c:15464
DIR_NTres
#define DIR_NTres
Definition: ff.c:154
NS_LFN
#define NS_LFN
Definition: ff.c:75
LDIR_Chksum
#define LDIR_Chksum
Definition: ff.c:165
TBL_CT437
#define TBL_CT437
Definition: ff.c:296
BPB_SecPerTrk
#define BPB_SecPerTrk
Definition: ff.c:106
BYTE
unsigned char BYTE
Definition: ff.h:54
TBL_CT720
#define TBL_CT720
Definition: ff.c:304
dir_find
static FRESULT dir_find(DIR *dp)
Definition: ff.c:2448
N_SEC_TRACK
#define N_SEC_TRACK
Definition: ff.c:5689
f_utime
FRESULT f_utime(const TCHAR *path, const FILINFO *fno)
Definition: ff.c:5265
CREATE_LINKMAP
#define CREATE_LINKMAP
Definition: ff.h:399
DIR::obj
FFOBJID obj
Definition: ff.h:229
GET_SECTOR_SIZE
#define GET_SECTOR_SIZE
Definition: diskio.h:69
LEAVE_MKFS
#define LEAVE_MKFS(res)
Definition: ff.c:549
INIT_NAMBUF
#define INIT_NAMBUF(fs)
Definition: ff.c:546
FR_NO_PATH
@ FR_NO_PATH
Definition: ff.h:282
FA_OPEN_APPEND
#define FA_OPEN_APPEND
Definition: ff.h:396
LDIR_Ord
#define LDIR_Ord
Definition: ff.c:162
BS_BootSig
#define BS_BootSig
Definition: ff.c:112
BPB_NumClusEx
#define BPB_NumClusEx
Definition: ff.c:139
f_open
FRESULT f_open(FIL *fp, const TCHAR *path, BYTE mode)
Definition: ff.c:3697
LD2PD
#define LD2PD(vol)
Definition: ff.c:254
dir_remove
static FRESULT dir_remove(DIR *dp)
Definition: ff.c:2635
XDIR_SetSum
#define XDIR_SetSum
Definition: ff.c:172
TBL_DC932
#define TBL_DC932
Definition: ff.c:436
BPB_FATSz16
#define BPB_FATSz16
Definition: ff.c:105
FA_CREATE_ALWAYS
#define FA_CREATE_ALWAYS
Definition: ff.h:394
ET_STREAM
#define ET_STREAM
Definition: ff.c:89
get_fat
static DWORD get_fat(FFOBJID *obj, DWORD clst)
Definition: ff.c:1185
dst
dst_t dst
DST start and stop in GMT epoch.
Definition: time.c:52
MBR_Table
#define MBR_Table
Definition: ff.c:199
BS_JmpBoot
#define BS_JmpBoot
Definition: ff.c:96
f_puts
int f_puts(const TCHAR *str, FIL *cp)
FILINFO::fdate
WORD fdate
Definition: ff.h:249
GPTH_PtBcc
#define GPTH_PtBcc
Definition: ff.c:224
BPB_SecPerClus
#define BPB_SecPerClus
Definition: ff.c:99
f_mkfs
FRESULT f_mkfs(const TCHAR *path, const MKFS_PARM *opt, void *work, UINT len)
Definition: ff.c:5838
XDIR_Label
#define XDIR_Label
Definition: ff.c:169
GPTH_CurLba
#define GPTH_CurLba
Definition: ff.c:216
MKFS_PARM::n_root
UINT n_root
Definition: ff.h:268
FATFS::fatbase
LBA_t fatbase
Definition: ff.h:168
get_fileinfo
static void get_fileinfo(DIR *dp, FILINFO *fno)
Definition: ff.c:2681
FS_EXFAT
#define FS_EXFAT
Definition: ff.h:412
BS_55AA
#define BS_55AA
Definition: ff.c:117
FATFS::id
WORD id
Definition: ff.h:138
GET_BLOCK_SIZE
#define GET_BLOCK_SIZE
Definition: diskio.h:70
TBL_CT857
#define TBL_CT857
Definition: ff.c:360
DIR::dir
BYTE * dir
Definition: ff.h:233
FFOBJID::objsize
FSIZE_t objsize
Definition: ff.h:188
GPTE_LstLba
#define GPTE_LstLba
Definition: ff.c:229
FIL::flag
BYTE flag
Definition: ff.h:207
FATFS::win
BYTE win[FF_MAX_SS]
Definition: ff.h:175
FSIZE_t
DWORD FSIZE_t
Definition: ff.h:124
f_setlabel
FRESULT f_setlabel(const TCHAR *label)
Definition: ff.c:5407
ld_clust
static DWORD ld_clust(FATFS *fs, const BYTE *dir)
Definition: ff.c:1870
BPB_RootClusEx
#define BPB_RootClusEx
Definition: ff.c:140
FATFS::fs_type
BYTE fs_type
Definition: ff.h:133
pattern_matching
static int pattern_matching(const TCHAR *pat, const TCHAR *nam, int skip, int inf)
Definition: ff.c:2818
NS_NONAME
#define NS_NONAME
Definition: ff.c:81
FR_WRITE_PROTECTED
@ FR_WRITE_PROTECTED
Definition: ff.h:287
BS_DrvNum
#define BS_DrvNum
Definition: ff.c:110
remove_chain
static FRESULT remove_chain(FFOBJID *obj, DWORD clst, DWORD pclst)
Definition: ff.c:1452
PTE_EdHead
#define PTE_EdHead
Definition: ff.c:206
IsLower
#define IsLower(c)
Definition: ff.c:53
f_unlink
FRESULT f_unlink(const TCHAR *path)
Definition: ff.c:4930
f_findfirst
FRESULT f_findfirst(DIR *dp, FILINFO *fno, const TCHAR *path, const TCHAR *pattern)
Definition: ff.c:4728
FATFS::database
LBA_t database
Definition: ff.h:170
FSI_LeadSig
#define FSI_LeadSig
Definition: ff.c:194
UINT
unsigned int UINT
Definition: ff.h:53
GPTH_Bcc
#define GPTH_Bcc
Definition: ff.c:215
TBL_DC950
#define TBL_DC950
Definition: ff.c:439
BPB_NumFATsEx
#define BPB_NumFATsEx
Definition: ff.c:146
FS_FAT16
#define FS_FAT16
Definition: ff.h:410
put_fat
static FRESULT put_fat(FATFS *fs, DWORD clst, DWORD val)
Definition: ff.c:1262
FF_CODE_PAGE
#define FF_CODE_PAGE
Definition: ffconf.h:71
DIR::clust
DWORD clust
Definition: ff.h:231
DIR_ModTime
#define DIR_ModTime
Definition: ff.c:159
LBA_t
DWORD LBA_t
Definition: ff.h:125
BS_BootCodeEx
#define BS_BootCodeEx
Definition: ff.c:150
FF_STRF_ENCODE
#define FF_STRF_ENCODE
Definition: ffconf.h:143
stat
MEMSPACE int stat(char *name, struct stat *buf)
POSIX stat - get file status of named file.
Definition: posix.c:1368
put_utf
static BYTE put_utf(DWORD chr, TCHAR *buf, UINT szb)
Definition: ff.c:854
dir_register
static FRESULT dir_register(DIR *dp)
Definition: ff.c:2529
ff_oem2uni
WCHAR ff_oem2uni(WCHAR oem, WORD cp)
Definition: ffunicode.c:15244
BPB_VolOfsEx
#define BPB_VolOfsEx
Definition: ff.c:134
sync_window
static FRESULT sync_window(FATFS *fs)
Definition: ff.c:1078
FATFS::fsize
DWORD fsize
Definition: ff.h:166
FSI_StrucSig
#define FSI_StrucSig
Definition: ff.c:195
FATFS::free_clst
DWORD free_clst
Definition: ff.h:155
find_volume
static UINT find_volume(FATFS *fs, UINT part)
Definition: ff.c:3322
NSFLAG
#define NSFLAG
Definition: ff.c:73
DIR_Name
#define DIR_Name
Definition: ff.c:152
FF_VOLUMES
#define FF_VOLUMES
Definition: ffconf.h:169
DIR_FstClusLO
#define DIR_FstClusLO
Definition: ff.c:160
sum
MEMSPACE uint16_t sum(char *name)
clst2sect
static LBA_t clst2sect(FATFS *fs, DWORD clst)
Definition: ff.c:1168
ld_word
static WORD ld_word(const BYTE *ptr)
Definition: ff.c:616
FATFS::n_rootdir
WORD n_rootdir
Definition: ff.h:139
TBL_CT771
#define TBL_CT771
Definition: ff.c:320
f_chdrive
FRESULT f_chdrive(const TCHAR *path)
Definition: ff.c:4229
BPB_BytsPerSec
#define BPB_BytsPerSec
Definition: ff.c:98
DIR::blk_ofs
DWORD blk_ofs
Definition: ff.h:236
st_clust
static void st_clust(FATFS *fs, BYTE *dir, DWORD cl)
Definition: ff.c:1887
MKFS_PARM::align
UINT align
Definition: ff.h:267
FA_MODIFIED
#define FA_MODIFIED
Definition: ff.c:62
disk_initialize
DSTATUS disk_initialize(BYTE pdrv)
Definition: diskio.c:78
dbc_1st
static int dbc_1st(BYTE c)
Definition: ff.c:737
NS_NOLFN
#define NS_NOLFN
Definition: ff.c:80
BPB_FATSz32
#define BPB_FATSz32
Definition: ff.c:119
FR_LOCKED
@ FR_LOCKED
Definition: ff.h:293
mem_cpy
static void mem_cpy(void *dst, const void *src, UINT cnt)
Definition: ff.c:690
BS_FilSysType
#define BS_FilSysType
Definition: ff.c:115
XDIR_CrtTime
#define XDIR_CrtTime
Definition: ff.c:174
ld_dword
static DWORD ld_dword(const BYTE *ptr)
Definition: ff.c:625
FR_NOT_ENABLED
@ FR_NOT_ENABLED
Definition: ff.h:289
FILINFO::altname
TCHAR altname[FF_SFN_BUF+1]
Definition: ff.h:253
XDIR_NameHash
#define XDIR_NameHash
Definition: ff.c:184
FIL::buf
BYTE buf[FF_MAX_SS]
Definition: ff.h:220
MAX_FAT12
#define MAX_FAT12
Definition: ff.c:45
TBL_DC936
#define TBL_DC936
Definition: ff.c:437
get_achar
static DWORD get_achar(const TCHAR **ptr)
Definition: ff.c:2787
TBL_CT864
#define TBL_CT864
Definition: ff.c:400
BPB_NumHeads
#define BPB_NumHeads
Definition: ff.c:107
XDIR_ModTime
#define XDIR_ModTime
Definition: ff.c:175
FA_READ
#define FA_READ
Definition: ff.h:390
f_findnext
FRESULT f_findnext(DIR *dp, FILINFO *fno)
Definition: ff.c:4703
CTRL_SYNC
#define CTRL_SYNC
Definition: diskio.h:67
FS_FAT32
#define FS_FAT32
Definition: ff.h:411
follow_path
static FRESULT follow_path(DIR *dp, const TCHAR *path)
Definition: ff.c:3066
STA_PROTECT
#define STA_PROTECT
Definition: diskio.h:62
XDIR_Attr
#define XDIR_Attr
Definition: ff.c:173
FF_MULTI_PARTITION
#define FF_MULTI_PARTITION
Definition: ffconf.h:187
FIL::obj
FFOBJID obj
Definition: ff.h:206
FF_FS_LOCK
#define FF_FS_LOCK
Definition: ffconf.h:266
PTE_StCyl
#define PTE_StCyl
Definition: ff.c:204
BPB_TotSecEx
#define BPB_TotSecEx
Definition: ff.c:135
dir_clear
static FRESULT dir_clear(FATFS *fs, DWORD clst)
Definition: ff.c:1680
f_getcwd
FRESULT f_getcwd(TCHAR *buff, UINT len)
Definition: ff.c:4308
st_word
static void st_word(BYTE *ptr, WORD val)
Definition: ff.c:654
GET_FATTIME
#define GET_FATTIME()
Definition: ff.c:277
NS_BODY
#define NS_BODY
Definition: ff.c:77
BPB_TotSec32
#define BPB_TotSec32
Definition: ff.c:109
SZ_PTE
#define SZ_PTE
Definition: ff.c:200
MAX_FAT16
#define MAX_FAT16
Definition: ff.c:46
pick_lfn
static int pick_lfn(WCHAR *lfnbuf, BYTE *dir)
Definition: ff.c:1943
GPTH_Sign
#define GPTH_Sign
Definition: ff.c:212
f_opendir
FRESULT f_opendir(DIR *dp, const TCHAR *path)
Definition: ff.c:4571
mem_set
static void mem_set(void *dst, int val, UINT cnt)
Definition: ff.c:704
FF_MAX_SS
#define FF_MAX_SS
Definition: ffconf.h:197
f_expand
FRESULT f_expand(FIL *fp, FSIZE_t fsz, BYTE opt)
Definition: ff.c:5527
FFOBJID::attr
BYTE attr
Definition: ff.h:185
PTE_EdCyl
#define PTE_EdCyl
Definition: ff.c:208
gen_numname
static void gen_numname(BYTE *dst, const BYTE *src, const WCHAR *lfn, UINT seq)
Definition: ff.c:2018
AM_VOL
#define AM_VOL
Definition: ff.c:67
GPTH_DskGuid
#define GPTH_DskGuid
Definition: ff.c:220
TBL_DC949
#define TBL_DC949
Definition: ff.c:438
FA_SEEKEND
#define FA_SEEKEND
Definition: ff.c:61
GPTH_FstLba
#define GPTH_FstLba
Definition: ff.c:218
SZ_GPTE
#define SZ_GPTE
Definition: ff.c:225
NS_DOT
#define NS_DOT
Definition: ff.c:79
FATFS::last_clst
DWORD last_clst
Definition: ff.h:154
BPB_BytsPerSecEx
#define BPB_BytsPerSecEx
Definition: ff.c:144
FR_DENIED
@ FR_DENIED
Definition: ff.h:284
FF_SFN_BUF
#define FF_SFN_BUF
Definition: ffconf.h:135
DIR_Attr
#define DIR_Attr
Definition: ff.c:153
BPB_DataOfsEx
#define BPB_DataOfsEx
Definition: ff.c:138
BPB_FSInfo32
#define BPB_FSInfo32
Definition: ff.c:123
Fsid
static WORD Fsid
Definition: ff.c:466
FR_MKFS_ABORTED
@ FR_MKFS_ABORTED
Definition: ff.h:291
mem_cmp
static int mem_cmp(const void *dst, const void *src, UINT cnt)
Definition: ff.c:715
GPTE_PtGuid
#define GPTE_PtGuid
Definition: ff.c:226
diskio.h
MAX_FAT32
#define MAX_FAT32
Definition: ff.c:47
GPTE_FstLba
#define GPTE_FstLba
Definition: ff.c:228
ff.h
FR_NOT_READY
@ FR_NOT_READY
Definition: ff.h:280
IsSurrogateL
#define IsSurrogateL(c)
Definition: ff.c:57
TBL_CT869
#define TBL_CT869
Definition: ff.c:424
f_lseek
FRESULT f_lseek(FIL *fp, FSIZE_t ofs)
Definition: ff.c:4408
disk_read
DRESULT disk_read(BYTE pdrv, BYTE *buff, LBA_t sector, UINT count)
Definition: diskio.c:110
BPB_RootClus32
#define BPB_RootClus32
Definition: ff.c:122
f_printf
int f_printf(FIL *fp, const TCHAR *str,...)
MKFS_PARM::au_size
DWORD au_size
Definition: ff.h:269
FSI_Nxt_Free
#define FSI_Nxt_Free
Definition: ff.c:197
FILINFO::fattrib
BYTE fattrib
Definition: ff.h:251
BPB_FatSzEx
#define BPB_FatSzEx
Definition: ff.c:137
FATFS::dirbase
LBA_t dirbase
Definition: ff.h:169
GPTE_UpGuid
#define GPTE_UpGuid
Definition: ff.c:227
FIL::clust
DWORD clust
Definition: ff.h:210
FF_MIN_SS
#define FF_MIN_SS
Definition: ffconf.h:196
cmp_lfn
static int cmp_lfn(const WCHAR *lfnbuf, BYTE *dir)
Definition: ff.c:1907
tchar2uni
static DWORD tchar2uni(const TCHAR **str)
Definition: ff.c:781
ET_VLABEL
#define ET_VLABEL
Definition: ff.c:87
FR_NO_FILESYSTEM
@ FR_NO_FILESYSTEM
Definition: ff.h:290
f_gets
TCHAR * f_gets(TCHAR *buff, int len, FIL *fp)
AM_SYS
#define AM_SYS
Definition: ff.h:417
f_forward
FRESULT f_forward(FIL *fp, UINT(*func)(const BYTE *, UINT), UINT btf, UINT *bf)
ExCvt
static const BYTE ExCvt[]
Definition: ff.c:594
BPB_FatOfsEx
#define BPB_FatOfsEx
Definition: ff.c:136
ET_FILEDIR
#define ET_FILEDIR
Definition: ff.c:88
f_chdir
FRESULT f_chdir(const TCHAR *path)
Definition: ff.c:4246
BPB_Media
#define BPB_Media
Definition: ff.c:104
XDIR_GenFlags
#define XDIR_GenFlags
Definition: ff.c:182
FM_ANY
#define FM_ANY
Definition: ff.h:405
XDIR_NumName
#define XDIR_NumName
Definition: ff.c:183
LEAVE_FF
#define LEAVE_FF(fs, res)
Definition: ff.c:245
SS
#define SS(fs)
Definition: ff.c:266
FIL::dir_ptr
BYTE * dir_ptr
Definition: ff.h:214
BPB_BkBootSec32
#define BPB_BkBootSec32
Definition: ff.c:124
FR_INT_ERR
@ FR_INT_ERR
Definition: ff.h:279
BPB_DrvNumEx
#define BPB_DrvNumEx
Definition: ff.c:147
ET_FILENAME
#define ET_FILENAME
Definition: ff.c:90
FRESULT
FRESULT
Definition: ff.h:276
DIR
Definition: ff.h:228
TBL_CT862
#define TBL_CT862
Definition: ff.c:384
ET_BITMAP
#define ET_BITMAP
Definition: ff.c:85
AM_DIR
#define AM_DIR
Definition: ff.h:418
f_setcp
FRESULT f_setcp(WORD cp)
STA_NOINIT
#define STA_NOINIT
Definition: diskio.h:60
FIL::err
BYTE err
Definition: ff.h:208
XDIR_NumSec
#define XDIR_NumSec
Definition: ff.c:171
ET_UPCASE
#define ET_UPCASE
Definition: ff.c:86
FR_OK
@ FR_OK
Definition: ff.h:277
FIL::fptr
FSIZE_t fptr
Definition: ff.h:209
IsUpper
#define IsUpper(c)
Definition: ff.c:52
BS_VolLab32
#define BS_VolLab32
Definition: ff.c:129
put_lfn
static void put_lfn(const WCHAR *lfn, BYTE *dir, BYTE ord, BYTE sum)
Definition: ff.c:1981
mount_volume
static FRESULT mount_volume(const TCHAR **path, FATFS **rfs, BYTE mode)
Definition: ff.c:3376
GPTH_PtNum
#define GPTH_PtNum
Definition: ff.c:222
FREE_NAMBUF
#define FREE_NAMBUF()
Definition: ff.c:547
MAX_EXFAT
#define MAX_EXFAT
Definition: ff.c:48
disk_status
DSTATUS disk_status(BYTE pdrv)
Definition: diskio.c:47
PTE_StLba
#define PTE_StLba
Definition: ff.c:209
FS_FAT12
#define FS_FAT12
Definition: ff.h:409
TBL_CT850
#define TBL_CT850
Definition: ff.c:336
TBL_CT865
#define TBL_CT865
Definition: ff.c:408
FF_LFN_BUF
#define FF_LFN_BUF
Definition: ffconf.h:134
IsDigit
#define IsDigit(c)
Definition: ff.c:54
ABORT
#define ABORT(fs, res)
Definition: ff.c:235
get_ldnumber
static int get_ldnumber(const TCHAR **path)
Definition: ff.c:3153
FILINFO::fname
TCHAR fname[FF_LFN_BUF+1]
Definition: ff.h:254
MAXDIRB
#define MAXDIRB(nc)
Definition: ff.c:515
TBL_CT852
#define TBL_CT852
Definition: ff.c:344
FIL::sect
LBA_t sect
Definition: ff.h:211
PTE_SizLba
#define PTE_SizLba
Definition: ff.c:210
BPB_RsvdSecCnt
#define BPB_RsvdSecCnt
Definition: ff.c:100
disk_write
DRESULT disk_write(BYTE pdrv, const BYTE *buff, LBA_t sector, UINT count)
Definition: diskio.c:145
AM_LFN
#define AM_LFN
Definition: ff.c:68
disk_ioctl
DRESULT disk_ioctl(BYTE pdrv, BYTE cmd, void *buff)
Definition: diskio.c:181
FATFS::winsect
LBA_t winsect
Definition: ff.h:174
f_mount
FRESULT f_mount(FATFS *fs, const TCHAR *path, BYTE opt)
Definition: ff.c:3649
FR_INVALID_PARAMETER
@ FR_INVALID_PARAMETER
Definition: ff.h:296
sync_fs
static FRESULT sync_fs(FATFS *fs)
Definition: ff.c:1131
FF_FS_RPATH
#define FF_FS_RPATH
Definition: ffconf.h:156
DDEM
#define DDEM
Definition: ff.c:190
DIR_READ_FILE
#define DIR_READ_FILE(dp)
Definition: ff.c:2367
validate
static FRESULT validate(FFOBJID *obj, FATFS **rfs)
Definition: ff.c:3605
TBL_CT860
#define TBL_CT860
Definition: ff.c:368
FR_TOO_MANY_OPEN_FILES
@ FR_TOO_MANY_OPEN_FILES
Definition: ff.h:295
FF_USE_LFN
#define FF_USE_LFN
Definition: ffconf.h:100
GPTH_PtOfs
#define GPTH_PtOfs
Definition: ff.c:221
MKCVTBL
#define MKCVTBL(hd, cp)
Definition: ff.c:444
BS_DrvNum32
#define BS_DrvNum32
Definition: ff.c:125
tm
POSIX struct tm.
Definition: time.h:40
BS_VolLab
#define BS_VolLab
Definition: ff.c:114
DIR::sect
LBA_t sect
Definition: ff.h:232
CODEPAGE
#define CODEPAGE
Definition: ff.c:593
f_truncate
FRESULT f_truncate(FIL *fp)
Definition: ff.c:4880
FM_EXFAT
#define FM_EXFAT
Definition: ff.h:404
clmt_clust
static DWORD clmt_clust(FIL *fp, FSIZE_t ofs)
Definition: ff.c:1650
FILINFO::fsize
FSIZE_t fsize
Definition: ff.h:248
BPB_HiddSec
#define BPB_HiddSec
Definition: ff.c:108
GET_SECTOR_COUNT
#define GET_SECTOR_COUNT
Definition: diskio.h:68
BPB_VolIDEx
#define BPB_VolIDEx
Definition: ff.c:141
FF_MIN_GPT
#define FF_MIN_GPT
Definition: ffconf.h:211
TBL_CT775
#define TBL_CT775
Definition: ff.c:328
ff_uni2oem
WCHAR ff_uni2oem(DWORD uni, WORD cp)
Definition: ffunicode.c:15222
FF_USE_LABEL
#define FF_USE_LABEL
Definition: ffconf.h:58
XDIR_ModTime10
#define XDIR_ModTime10
Definition: ff.c:178
DIR::pat
const TCHAR * pat
Definition: ff.h:239
FM_FAT
#define FM_FAT
Definition: ff.h:402
FR_INVALID_NAME
@ FR_INVALID_NAME
Definition: ff.h:283
BPB_SecPerClusEx
#define BPB_SecPerClusEx
Definition: ff.c:145
FATFS::n_fatent
DWORD n_fatent
Definition: ff.h:165
WORD
unsigned short WORD
Definition: ff.h:55
ff_memalloc
void * ff_memalloc(UINT msize)
Definition: ffsystem.c:23
RDDEM
#define RDDEM
Definition: ff.c:191
MAX_DIR_EX
#define MAX_DIR_EX
Definition: ff.c:44
TBL_CT737
#define TBL_CT737
Definition: ff.c:312
DEF_NAMBUF
#define DEF_NAMBUF
Definition: ff.c:545
f_getlabel
FRESULT f_getlabel(const TCHAR *path, TCHAR *label, DWORD *vsn)
Definition: ff.c:5312
create_chain
static DWORD create_chain(FFOBJID *obj, DWORD clst)
Definition: ff.c:1547
dir_alloc
static FRESULT dir_alloc(DIR *dp, UINT nent)
Definition: ff.c:1828
FA_DIRTY
#define FA_DIRTY
Definition: ff.c:63
FFOBJID::sclust
DWORD sclust
Definition: ff.h:187
f_closedir
FRESULT f_closedir(DIR *dp)
Definition: ff.c:4637
BS_VolID
#define BS_VolID
Definition: ff.c:113
BPB_PercInUseEx
#define BPB_PercInUseEx
Definition: ff.c:148
move_window
static FRESULT move_window(FATFS *fs, LBA_t sect)
Definition: ff.c:1100
FF_LBA64
#define FF_LBA64
Definition: ffconf.h:206
EOF
#define EOF
Definition: ff.h:349
BPB_VolFlagEx
#define BPB_VolFlagEx
Definition: ff.c:143
FATFS::fsi_flag
BYTE fsi_flag
Definition: ff.h:137
SZDIRE
#define SZDIRE
Definition: ff.c:189
GPTH_BakLba
#define GPTH_BakLba
Definition: ff.c:217
BPB_TotSec16
#define BPB_TotSec16
Definition: ff.c:103
GPT_ITEMS
#define GPT_ITEMS
Definition: ff.c:5691
create_name
static FRESULT create_name(DIR *dp, const TCHAR **path)
Definition: ff.c:2865
FF_MAX_LFN
#define FF_MAX_LFN
Definition: ffconf.h:101
PTE_StSec
#define PTE_StSec
Definition: ff.c:203
FILINFO
Definition: ff.h:247
LD2PT
#define LD2PT(vol)
Definition: ff.c:255
FATFS::csize
WORD csize
Definition: ff.h:140
PTE_EdSec
#define PTE_EdSec
Definition: ff.c:207
DWORD
unsigned long DWORD
Definition: ff.h:56
FatFs
static FATFS * FatFs[FF_VOLUMES]
Definition: ff.c:465
PTE_StHead
#define PTE_StHead
Definition: ff.c:202
f_putc
int f_putc(TCHAR c, FIL *fp)
RES_OK
@ RES_OK
Definition: diskio.h:31
FFOBJID::stat
BYTE stat
Definition: ff.h:186
GPTH_LstLba
#define GPTH_LstLba
Definition: ff.c:219
f_chmod
FRESULT f_chmod(const TCHAR *path, BYTE attr, BYTE mask)
Definition: ff.c:5218
LDIR_Type
#define LDIR_Type
Definition: ff.c:164
FM_FAT32
#define FM_FAT32
Definition: ff.h:403
FIL::dir_sect
LBA_t dir_sect
Definition: ff.h:213
GPT_ALIGN
#define GPT_ALIGN
Definition: ff.c:5690
FF_VOLUME_STRS
#define FF_VOLUME_STRS
Definition: ffconf.h:174
TBL_CT866
#define TBL_CT866
Definition: ff.c:416
FF_STR_VOLUME_ID
#define FF_STR_VOLUME_ID
Definition: ffconf.h:173
FATFS::volbase
LBA_t volbase
Definition: ff.h:167
AM_RDO
#define AM_RDO
Definition: ff.h:415
DIR_READ_LABEL
#define DIR_READ_LABEL(dp)
Definition: ff.c:2368
FFOBJID::id
WORD id
Definition: ff.h:184
FR_TIMEOUT
@ FR_TIMEOUT
Definition: ff.h:292
AM_ARC
#define AM_ARC
Definition: ff.h:419
FR_INVALID_DRIVE
@ FR_INVALID_DRIVE
Definition: ff.h:288
PTE_System
#define PTE_System
Definition: ff.c:205
f_mkdir
FRESULT f_mkdir(const TCHAR *path)
Definition: ff.c:5024
AM_MASK
#define AM_MASK
Definition: ff.c:69
f_readdir
FRESULT f_readdir(DIR *dp, FILINFO *fno)
Definition: ff.c:4667
f_read
FRESULT f_read(FIL *fp, void *buff, UINT btr, UINT *br)
Definition: ff.c:3889
ff_memfree
void ff_memfree(void *mblock)
Definition: ffsystem.c:35
f_sync
FRESULT f_sync(FIL *fp)
Definition: ff.c:4112
f_close
FRESULT f_close(FIL *fp)
Definition: ff.c:4193
BPB_NumFATs
#define BPB_NumFATs
Definition: ff.c:101
WCHAR
WORD WCHAR
Definition: ff.h:57
XDIR_Type
#define XDIR_Type
Definition: ff.c:167
f_getfree
FRESULT f_getfree(const TCHAR *path, DWORD *nclst, FATFS **fatfs)
Definition: ff.c:4790
f_fdisk
FRESULT f_fdisk(BYTE pdrv, const LBA_t ptbl[], void *work)
FM_SFD
#define FM_SFD
Definition: ff.h:406
FA_CREATE_NEW
#define FA_CREATE_NEW
Definition: ff.h:393
MKFS_PARM::n_fat
BYTE n_fat
Definition: ff.h:266
chk_chr
static int chk_chr(const char *str, int chr)
Definition: ff.c:729
FF_FS_EXFAT
#define FF_FS_EXFAT
Definition: ffconf.h:234
FF_USE_STRFUNC
#define FF_USE_STRFUNC
Definition: ffconf.h:28
FATFS::cdir
DWORD cdir
Definition: ff.h:158
NS_LAST
#define NS_LAST
Definition: ff.c:76
FATFS::pdrv
BYTE pdrv
Definition: ff.h:134
DIR_LstAccDate
#define DIR_LstAccDate
Definition: ff.c:157
BPB_RootEntCnt
#define BPB_RootEntCnt
Definition: ff.c:102
BS_VolID32
#define BS_VolID32
Definition: ff.c:128
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