Project2_cvu31 - SNAKE GAME

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Cong Vu / Mbed 2 deprecated Project2_cvu31

SNAKE GAME

Dependencies: mbed wave_player 4DGL-uLCD-SE MMA8452

SDFileSystem/FATFileSystem/ChaN/ff.cpp@0:24041b847eb5, 2020-11-25 (annotated)

Committer:: congvu
Date:: Wed Nov 25 04:25:25 2020 +0000
Revision:: 0:24041b847eb5

ECE2035 SNAKE GAME;

Who changed what in which revision?

User	Revision	Line number	New contents of line
congvu	0:24041b847eb5	1	/*----------------------------------------------------------------------------/
congvu	0:24041b847eb5	2	/ FatFs - FAT file system module R0.09a (C)ChaN, 2012
congvu	0:24041b847eb5	3	/-----------------------------------------------------------------------------/
congvu	0:24041b847eb5	4	/ FatFs module is a generic FAT file system module for small embedded systems.
congvu	0:24041b847eb5	5	/ This is a free software that opened for education, research and commercial
congvu	0:24041b847eb5	6	/ developments under license policy of following terms.
congvu	0:24041b847eb5	7	/
congvu	0:24041b847eb5	8	/ Copyright (C) 2012, ChaN, all right reserved.
congvu	0:24041b847eb5	9	/
congvu	0:24041b847eb5	10	/ * The FatFs module is a free software and there is NO WARRANTY.
congvu	0:24041b847eb5	11	/ * No restriction on use. You can use, modify and redistribute it for
congvu	0:24041b847eb5	12	/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
congvu	0:24041b847eb5	13	/ * Redistributions of source code must retain the above copyright notice.
congvu	0:24041b847eb5	14	/
congvu	0:24041b847eb5	15	/-----------------------------------------------------------------------------/
congvu	0:24041b847eb5	16	/ Feb 26,'06 R0.00 Prototype.
congvu	0:24041b847eb5	17	/
congvu	0:24041b847eb5	18	/ Apr 29,'06 R0.01 First stable version.
congvu	0:24041b847eb5	19	/
congvu	0:24041b847eb5	20	/ Jun 01,'06 R0.02 Added FAT12 support.
congvu	0:24041b847eb5	21	/ Removed unbuffered mode.
congvu	0:24041b847eb5	22	/ Fixed a problem on small (<32M) partition.
congvu	0:24041b847eb5	23	/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
congvu	0:24041b847eb5	24	/
congvu	0:24041b847eb5	25	/ Sep 22,'06 R0.03 Added f_rename().
congvu	0:24041b847eb5	26	/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
congvu	0:24041b847eb5	27	/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
congvu	0:24041b847eb5	28	/ Fixed f_mkdir() creates incorrect directory on FAT32.
congvu	0:24041b847eb5	29	/
congvu	0:24041b847eb5	30	/ Feb 04,'07 R0.04 Supported multiple drive system.
congvu	0:24041b847eb5	31	/ Changed some interfaces for multiple drive system.
congvu	0:24041b847eb5	32	/ Changed f_mountdrv() to f_mount().
congvu	0:24041b847eb5	33	/ Added f_mkfs().
congvu	0:24041b847eb5	34	/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
congvu	0:24041b847eb5	35	/ Added a capability of extending file size to f_lseek().
congvu	0:24041b847eb5	36	/ Added minimization level 3.
congvu	0:24041b847eb5	37	/ Fixed an endian sensitive code in f_mkfs().
congvu	0:24041b847eb5	38	/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
congvu	0:24041b847eb5	39	/ Added FSInfo support.
congvu	0:24041b847eb5	40	/ Fixed DBCS name can result FR_INVALID_NAME.
congvu	0:24041b847eb5	41	/ Fixed short seek (<= csize) collapses the file object.
congvu	0:24041b847eb5	42	/
congvu	0:24041b847eb5	43	/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
congvu	0:24041b847eb5	44	/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
congvu	0:24041b847eb5	45	/ Fixed f_mkdir() on FAT32 creates incorrect directory.
congvu	0:24041b847eb5	46	/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
congvu	0:24041b847eb5	47	/ Fixed off by one error at FAT sub-type determination.
congvu	0:24041b847eb5	48	/ Fixed btr in f_read() can be mistruncated.
congvu	0:24041b847eb5	49	/ Fixed cached sector is not flushed when create and close without write.
congvu	0:24041b847eb5	50	/
congvu	0:24041b847eb5	51	/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
congvu	0:24041b847eb5	52	/ Improved performance of f_lseek() on moving to the same or following cluster.
congvu	0:24041b847eb5	53	/
congvu	0:24041b847eb5	54	/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
congvu	0:24041b847eb5	55	/ Added long file name feature.
congvu	0:24041b847eb5	56	/ Added multiple code page feature.
congvu	0:24041b847eb5	57	/ Added re-entrancy for multitask operation.
congvu	0:24041b847eb5	58	/ Added auto cluster size selection to f_mkfs().
congvu	0:24041b847eb5	59	/ Added rewind option to f_readdir().
congvu	0:24041b847eb5	60	/ Changed result code of critical errors.
congvu	0:24041b847eb5	61	/ Renamed string functions to avoid name collision.
congvu	0:24041b847eb5	62	/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
congvu	0:24041b847eb5	63	/ Added multiple sector size feature.
congvu	0:24041b847eb5	64	/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
congvu	0:24041b847eb5	65	/ Fixed wrong cache control in f_lseek().
congvu	0:24041b847eb5	66	/ Added relative path feature.
congvu	0:24041b847eb5	67	/ Added f_chdir() and f_chdrive().
congvu	0:24041b847eb5	68	/ Added proper case conversion to extended char.
congvu	0:24041b847eb5	69	/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
congvu	0:24041b847eb5	70	/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
congvu	0:24041b847eb5	71	/ Fixed name matching error on the 13 char boundary.
congvu	0:24041b847eb5	72	/ Added a configuration option, _LFN_UNICODE.
congvu	0:24041b847eb5	73	/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
congvu	0:24041b847eb5	74	/
congvu	0:24041b847eb5	75	/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
congvu	0:24041b847eb5	76	/ Added file lock feature. (_FS_SHARE)
congvu	0:24041b847eb5	77	/ Added fast seek feature. (_USE_FASTSEEK)
congvu	0:24041b847eb5	78	/ Changed some types on the API, XCHAR->TCHAR.
congvu	0:24041b847eb5	79	/ Changed fname member in the FILINFO structure on Unicode cfg.
congvu	0:24041b847eb5	80	/ String functions support UTF-8 encoding files on Unicode cfg.
congvu	0:24041b847eb5	81	/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
congvu	0:24041b847eb5	82	/ Added sector erase feature. (_USE_ERASE)
congvu	0:24041b847eb5	83	/ Moved file lock semaphore table from fs object to the bss.
congvu	0:24041b847eb5	84	/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
congvu	0:24041b847eb5	85	/ Fixed f_mkfs() creates wrong FAT32 volume.
congvu	0:24041b847eb5	86	/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
congvu	0:24041b847eb5	87	/ f_lseek() reports required table size on creating CLMP.
congvu	0:24041b847eb5	88	/ Extended format syntax of f_printf function.
congvu	0:24041b847eb5	89	/ Ignores duplicated directory separators in given path name.
congvu	0:24041b847eb5	90	/
congvu	0:24041b847eb5	91	/ Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature.
congvu	0:24041b847eb5	92	/ Added f_fdisk(). (_MULTI_PARTITION = 2)
congvu	0:24041b847eb5	93	/ Aug 27,'12 R0.09a Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
congvu	0:24041b847eb5	94	/ Changed f_open() and f_opendir reject null object pointer to avoid crash.
congvu	0:24041b847eb5	95	/ Changed option name _FS_SHARE to _FS_LOCK.
congvu	0:24041b847eb5	96	/---------------------------------------------------------------------------*/
congvu	0:24041b847eb5	97
congvu	0:24041b847eb5	98	#include "ff.h" /* FatFs configurations and declarations */
congvu	0:24041b847eb5	99	#include "diskio.h" /* Declarations of low level disk I/O functions */
congvu	0:24041b847eb5	100
congvu	0:24041b847eb5	101
congvu	0:24041b847eb5	102	/*--------------------------------------------------------------------------
congvu	0:24041b847eb5	103
congvu	0:24041b847eb5	104	Module Private Definitions
congvu	0:24041b847eb5	105
congvu	0:24041b847eb5	106	---------------------------------------------------------------------------*/
congvu	0:24041b847eb5	107
congvu	0:24041b847eb5	108	#if _FATFS != 4004 /* Revision ID */
congvu	0:24041b847eb5	109	#error Wrong include file (ff.h).
congvu	0:24041b847eb5	110	#endif
congvu	0:24041b847eb5	111
congvu	0:24041b847eb5	112
congvu	0:24041b847eb5	113	/* Definitions on sector size */
congvu	0:24041b847eb5	114	#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
congvu	0:24041b847eb5	115	#error Wrong sector size.
congvu	0:24041b847eb5	116	#endif
congvu	0:24041b847eb5	117	#if _MAX_SS != 512
congvu	0:24041b847eb5	118	#define SS(fs) ((fs)->ssize) /* Variable sector size */
congvu	0:24041b847eb5	119	#else
congvu	0:24041b847eb5	120	#define SS(fs) 512U /* Fixed sector size */
congvu	0:24041b847eb5	121	#endif
congvu	0:24041b847eb5	122
congvu	0:24041b847eb5	123
congvu	0:24041b847eb5	124	/* Reentrancy related */
congvu	0:24041b847eb5	125	#if _FS_REENTRANT
congvu	0:24041b847eb5	126	#if _USE_LFN == 1
congvu	0:24041b847eb5	127	#error Static LFN work area must not be used in re-entrant configuration.
congvu	0:24041b847eb5	128	#endif
congvu	0:24041b847eb5	129	#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
congvu	0:24041b847eb5	130	#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
congvu	0:24041b847eb5	131	#else
congvu	0:24041b847eb5	132	#define ENTER_FF(fs)
congvu	0:24041b847eb5	133	#define LEAVE_FF(fs, res) return res
congvu	0:24041b847eb5	134	#endif
congvu	0:24041b847eb5	135
congvu	0:24041b847eb5	136	#define ABORT(fs, res) { fp->flag \|= FA__ERROR; LEAVE_FF(fs, res); }
congvu	0:24041b847eb5	137
congvu	0:24041b847eb5	138
congvu	0:24041b847eb5	139	/* File access control feature */
congvu	0:24041b847eb5	140	#if _FS_LOCK
congvu	0:24041b847eb5	141	#if _FS_READONLY
congvu	0:24041b847eb5	142	#error _FS_LOCK must be 0 on read-only cfg.
congvu	0:24041b847eb5	143	#endif
congvu	0:24041b847eb5	144	typedef struct {
congvu	0:24041b847eb5	145	FATFS fs; / File ID 1, volume (NULL:blank entry) */
congvu	0:24041b847eb5	146	DWORD clu; /* File ID 2, directory */
congvu	0:24041b847eb5	147	WORD idx; /* File ID 3, directory index */
congvu	0:24041b847eb5	148	WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
congvu	0:24041b847eb5	149	} FILESEM;
congvu	0:24041b847eb5	150	#endif
congvu	0:24041b847eb5	151
congvu	0:24041b847eb5	152
congvu	0:24041b847eb5	153
congvu	0:24041b847eb5	154	/* DBCS code ranges and SBCS extend char conversion table */
congvu	0:24041b847eb5	155
congvu	0:24041b847eb5	156	#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
congvu	0:24041b847eb5	157	#define _DF1S 0x81 /* DBC 1st byte range 1 start */
congvu	0:24041b847eb5	158	#define _DF1E 0x9F /* DBC 1st byte range 1 end */
congvu	0:24041b847eb5	159	#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
congvu	0:24041b847eb5	160	#define _DF2E 0xFC /* DBC 1st byte range 2 end */
congvu	0:24041b847eb5	161	#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
congvu	0:24041b847eb5	162	#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
congvu	0:24041b847eb5	163	#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
congvu	0:24041b847eb5	164	#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
congvu	0:24041b847eb5	165
congvu	0:24041b847eb5	166	#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
congvu	0:24041b847eb5	167	#define _DF1S 0x81
congvu	0:24041b847eb5	168	#define _DF1E 0xFE
congvu	0:24041b847eb5	169	#define _DS1S 0x40
congvu	0:24041b847eb5	170	#define _DS1E 0x7E
congvu	0:24041b847eb5	171	#define _DS2S 0x80
congvu	0:24041b847eb5	172	#define _DS2E 0xFE
congvu	0:24041b847eb5	173
congvu	0:24041b847eb5	174	#elif _CODE_PAGE == 949 /* Korean */
congvu	0:24041b847eb5	175	#define _DF1S 0x81
congvu	0:24041b847eb5	176	#define _DF1E 0xFE
congvu	0:24041b847eb5	177	#define _DS1S 0x41
congvu	0:24041b847eb5	178	#define _DS1E 0x5A
congvu	0:24041b847eb5	179	#define _DS2S 0x61
congvu	0:24041b847eb5	180	#define _DS2E 0x7A
congvu	0:24041b847eb5	181	#define _DS3S 0x81
congvu	0:24041b847eb5	182	#define _DS3E 0xFE
congvu	0:24041b847eb5	183
congvu	0:24041b847eb5	184	#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
congvu	0:24041b847eb5	185	#define _DF1S 0x81
congvu	0:24041b847eb5	186	#define _DF1E 0xFE
congvu	0:24041b847eb5	187	#define _DS1S 0x40
congvu	0:24041b847eb5	188	#define _DS1E 0x7E
congvu	0:24041b847eb5	189	#define _DS2S 0xA1
congvu	0:24041b847eb5	190	#define _DS2E 0xFE
congvu	0:24041b847eb5	191
congvu	0:24041b847eb5	192	#elif _CODE_PAGE == 437 /* U.S. (OEM) */
congvu	0:24041b847eb5	193	#define _DF1S 0
congvu	0:24041b847eb5	194	#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	195	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	196	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	197	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	198
congvu	0:24041b847eb5	199	#elif _CODE_PAGE == 720 /* Arabic (OEM) */
congvu	0:24041b847eb5	200	#define _DF1S 0
congvu	0:24041b847eb5	201	#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	202	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	203	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	204	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	205
congvu	0:24041b847eb5	206	#elif _CODE_PAGE == 737 /* Greek (OEM) */
congvu	0:24041b847eb5	207	#define _DF1S 0
congvu	0:24041b847eb5	208	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
congvu	0:24041b847eb5	209	0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	210	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	211	0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	212
congvu	0:24041b847eb5	213	#elif _CODE_PAGE == 775 /* Baltic (OEM) */
congvu	0:24041b847eb5	214	#define _DF1S 0
congvu	0:24041b847eb5	215	#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	216	0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	217	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	218	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	219
congvu	0:24041b847eb5	220	#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
congvu	0:24041b847eb5	221	#define _DF1S 0
congvu	0:24041b847eb5	222	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	223	0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	224	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	225	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	226
congvu	0:24041b847eb5	227	#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
congvu	0:24041b847eb5	228	#define _DF1S 0
congvu	0:24041b847eb5	229	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	230	0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
congvu	0:24041b847eb5	231	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	232	0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
congvu	0:24041b847eb5	233
congvu	0:24041b847eb5	234	#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
congvu	0:24041b847eb5	235	#define _DF1S 0
congvu	0:24041b847eb5	236	#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
congvu	0:24041b847eb5	237	0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
congvu	0:24041b847eb5	238	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
congvu	0:24041b847eb5	239	0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	240
congvu	0:24041b847eb5	241	#elif _CODE_PAGE == 857 /* Turkish (OEM) */
congvu	0:24041b847eb5	242	#define _DF1S 0
congvu	0:24041b847eb5	243	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
congvu	0:24041b847eb5	244	0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	245	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	246	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	247
congvu	0:24041b847eb5	248	#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
congvu	0:24041b847eb5	249	#define _DF1S 0
congvu	0:24041b847eb5	250	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	251	0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	252	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	253	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	254
congvu	0:24041b847eb5	255	#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
congvu	0:24041b847eb5	256	#define _DF1S 0
congvu	0:24041b847eb5	257	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	258	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	259	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	260	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	261
congvu	0:24041b847eb5	262	#elif _CODE_PAGE == 866 /* Russian (OEM) */
congvu	0:24041b847eb5	263	#define _DF1S 0
congvu	0:24041b847eb5	264	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	265	0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	266	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	267	0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	268
congvu	0:24041b847eb5	269	#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
congvu	0:24041b847eb5	270	#define _DF1S 0
congvu	0:24041b847eb5	271	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	272	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	273	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	274	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	275
congvu	0:24041b847eb5	276	#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
congvu	0:24041b847eb5	277	#define _DF1S 0
congvu	0:24041b847eb5	278	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
congvu	0:24041b847eb5	279	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
congvu	0:24041b847eb5	280	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	281	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
congvu	0:24041b847eb5	282
congvu	0:24041b847eb5	283	#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
congvu	0:24041b847eb5	284	#define _DF1S 0
congvu	0:24041b847eb5	285	#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
congvu	0:24041b847eb5	286	0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
congvu	0:24041b847eb5	287	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	288	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
congvu	0:24041b847eb5	289
congvu	0:24041b847eb5	290	#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
congvu	0:24041b847eb5	291	#define _DF1S 0
congvu	0:24041b847eb5	292	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
congvu	0:24041b847eb5	293	0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	294	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	295	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
congvu	0:24041b847eb5	296
congvu	0:24041b847eb5	297	#elif _CODE_PAGE == 1253 /* Greek (Windows) */
congvu	0:24041b847eb5	298	#define _DF1S 0
congvu	0:24041b847eb5	299	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	300	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	301	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
congvu	0:24041b847eb5	302	0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
congvu	0:24041b847eb5	303
congvu	0:24041b847eb5	304	#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
congvu	0:24041b847eb5	305	#define _DF1S 0
congvu	0:24041b847eb5	306	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	307	0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	308	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	309	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
congvu	0:24041b847eb5	310
congvu	0:24041b847eb5	311	#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
congvu	0:24041b847eb5	312	#define _DF1S 0
congvu	0:24041b847eb5	313	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	314	0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	315	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	316	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	317
congvu	0:24041b847eb5	318	#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
congvu	0:24041b847eb5	319	#define _DF1S 0
congvu	0:24041b847eb5	320	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	321	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	322	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	323	0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
congvu	0:24041b847eb5	324
congvu	0:24041b847eb5	325	#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
congvu	0:24041b847eb5	326	#define _DF1S 0
congvu	0:24041b847eb5	327	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	328	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
congvu	0:24041b847eb5	329	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	330	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
congvu	0:24041b847eb5	331
congvu	0:24041b847eb5	332	#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
congvu	0:24041b847eb5	333	#define _DF1S 0
congvu	0:24041b847eb5	334	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
congvu	0:24041b847eb5	335	0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
congvu	0:24041b847eb5	336	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
congvu	0:24041b847eb5	337	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
congvu	0:24041b847eb5	338
congvu	0:24041b847eb5	339	#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
congvu	0:24041b847eb5	340	#if _USE_LFN
congvu	0:24041b847eb5	341	#error Cannot use LFN feature without valid code page.
congvu	0:24041b847eb5	342	#endif
congvu	0:24041b847eb5	343	#define _DF1S 0
congvu	0:24041b847eb5	344
congvu	0:24041b847eb5	345	#else
congvu	0:24041b847eb5	346	#error Unknown code page
congvu	0:24041b847eb5	347
congvu	0:24041b847eb5	348	#endif
congvu	0:24041b847eb5	349
congvu	0:24041b847eb5	350
congvu	0:24041b847eb5	351	/* Character code support macros */
congvu	0:24041b847eb5	352	#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
congvu	0:24041b847eb5	353	#define IsLower(c) (((c)>='a')&&((c)<='z'))
congvu	0:24041b847eb5	354	#define IsDigit(c) (((c)>='0')&&((c)<='9'))
congvu	0:24041b847eb5	355
congvu	0:24041b847eb5	356	#if _DF1S /* Code page is DBCS */
congvu	0:24041b847eb5	357
congvu	0:24041b847eb5	358	#ifdef _DF2S /* Two 1st byte areas */
congvu	0:24041b847eb5	359	#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) \|\| ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
congvu	0:24041b847eb5	360	#else /* One 1st byte area */
congvu	0:24041b847eb5	361	#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
congvu	0:24041b847eb5	362	#endif
congvu	0:24041b847eb5	363
congvu	0:24041b847eb5	364	#ifdef _DS3S /* Three 2nd byte areas */
congvu	0:24041b847eb5	365	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) \|\| ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
congvu	0:24041b847eb5	366	#else /* Two 2nd byte areas */
congvu	0:24041b847eb5	367	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
congvu	0:24041b847eb5	368	#endif
congvu	0:24041b847eb5	369
congvu	0:24041b847eb5	370	#else /* Code page is SBCS */
congvu	0:24041b847eb5	371
congvu	0:24041b847eb5	372	#define IsDBCS1(c) 0
congvu	0:24041b847eb5	373	#define IsDBCS2(c) 0
congvu	0:24041b847eb5	374
congvu	0:24041b847eb5	375	#endif /* _DF1S */
congvu	0:24041b847eb5	376
congvu	0:24041b847eb5	377
congvu	0:24041b847eb5	378	/* Name status flags */
congvu	0:24041b847eb5	379	#define NS 11 /* Index of name status byte in fn[] */
congvu	0:24041b847eb5	380	#define NS_LOSS 0x01 /* Out of 8.3 format */
congvu	0:24041b847eb5	381	#define NS_LFN 0x02 /* Force to create LFN entry */
congvu	0:24041b847eb5	382	#define NS_LAST 0x04 /* Last segment */
congvu	0:24041b847eb5	383	#define NS_BODY 0x08 /* Lower case flag (body) */
congvu	0:24041b847eb5	384	#define NS_EXT 0x10 /* Lower case flag (ext) */
congvu	0:24041b847eb5	385	#define NS_DOT 0x20 /* Dot entry */
congvu	0:24041b847eb5	386
congvu	0:24041b847eb5	387
congvu	0:24041b847eb5	388	/* FAT sub-type boundaries */
congvu	0:24041b847eb5	389	/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
congvu	0:24041b847eb5	390	#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
congvu	0:24041b847eb5	391	#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
congvu	0:24041b847eb5	392
congvu	0:24041b847eb5	393
congvu	0:24041b847eb5	394	/* FatFs refers the members in the FAT structures as byte array instead of
congvu	0:24041b847eb5	395	/ structure member because the structure is not binary compatible between
congvu	0:24041b847eb5	396	/ different platforms */
congvu	0:24041b847eb5	397
congvu	0:24041b847eb5	398	#define BS_jmpBoot 0 /* Jump instruction (3) */
congvu	0:24041b847eb5	399	#define BS_OEMName 3 /* OEM name (8) */
congvu	0:24041b847eb5	400	#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
congvu	0:24041b847eb5	401	#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
congvu	0:24041b847eb5	402	#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
congvu	0:24041b847eb5	403	#define BPB_NumFATs 16 /* Number of FAT copies (1) */
congvu	0:24041b847eb5	404	#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
congvu	0:24041b847eb5	405	#define BPB_TotSec16 19 /* Volume size [sector] (2) */
congvu	0:24041b847eb5	406	#define BPB_Media 21 /* Media descriptor (1) */
congvu	0:24041b847eb5	407	#define BPB_FATSz16 22 /* FAT size [sector] (2) */
congvu	0:24041b847eb5	408	#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
congvu	0:24041b847eb5	409	#define BPB_NumHeads 26 /* Number of heads (2) */
congvu	0:24041b847eb5	410	#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
congvu	0:24041b847eb5	411	#define BPB_TotSec32 32 /* Volume size [sector] (4) */
congvu	0:24041b847eb5	412	#define BS_DrvNum 36 /* Physical drive number (2) */
congvu	0:24041b847eb5	413	#define BS_BootSig 38 /* Extended boot signature (1) */
congvu	0:24041b847eb5	414	#define BS_VolID 39 /* Volume serial number (4) */
congvu	0:24041b847eb5	415	#define BS_VolLab 43 /* Volume label (8) */
congvu	0:24041b847eb5	416	#define BS_FilSysType 54 /* File system type (1) */
congvu	0:24041b847eb5	417	#define BPB_FATSz32 36 /* FAT size [sector] (4) */
congvu	0:24041b847eb5	418	#define BPB_ExtFlags 40 /* Extended flags (2) */
congvu	0:24041b847eb5	419	#define BPB_FSVer 42 /* File system version (2) */
congvu	0:24041b847eb5	420	#define BPB_RootClus 44 /* Root dir first cluster (4) */
congvu	0:24041b847eb5	421	#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
congvu	0:24041b847eb5	422	#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
congvu	0:24041b847eb5	423	#define BS_DrvNum32 64 /* Physical drive number (2) */
congvu	0:24041b847eb5	424	#define BS_BootSig32 66 /* Extended boot signature (1) */
congvu	0:24041b847eb5	425	#define BS_VolID32 67 /* Volume serial number (4) */
congvu	0:24041b847eb5	426	#define BS_VolLab32 71 /* Volume label (8) */
congvu	0:24041b847eb5	427	#define BS_FilSysType32 82 /* File system type (1) */
congvu	0:24041b847eb5	428	#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
congvu	0:24041b847eb5	429	#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
congvu	0:24041b847eb5	430	#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
congvu	0:24041b847eb5	431	#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
congvu	0:24041b847eb5	432	#define MBR_Table 446 /* MBR: Partition table offset (2) */
congvu	0:24041b847eb5	433	#define SZ_PTE 16 /* MBR: Size of a partition table entry */
congvu	0:24041b847eb5	434	#define BS_55AA 510 /* Boot sector signature (2) */
congvu	0:24041b847eb5	435
congvu	0:24041b847eb5	436	#define DIR_Name 0 /* Short file name (11) */
congvu	0:24041b847eb5	437	#define DIR_Attr 11 /* Attribute (1) */
congvu	0:24041b847eb5	438	#define DIR_NTres 12 /* NT flag (1) */
congvu	0:24041b847eb5	439	#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
congvu	0:24041b847eb5	440	#define DIR_CrtTime 14 /* Created time (2) */
congvu	0:24041b847eb5	441	#define DIR_CrtDate 16 /* Created date (2) */
congvu	0:24041b847eb5	442	#define DIR_LstAccDate 18 /* Last accessed date (2) */
congvu	0:24041b847eb5	443	#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
congvu	0:24041b847eb5	444	#define DIR_WrtTime 22 /* Modified time (2) */
congvu	0:24041b847eb5	445	#define DIR_WrtDate 24 /* Modified date (2) */
congvu	0:24041b847eb5	446	#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
congvu	0:24041b847eb5	447	#define DIR_FileSize 28 /* File size (4) */
congvu	0:24041b847eb5	448	#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
congvu	0:24041b847eb5	449	#define LDIR_Attr 11 /* LFN attribute (1) */
congvu	0:24041b847eb5	450	#define LDIR_Type 12 /* LFN type (1) */
congvu	0:24041b847eb5	451	#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
congvu	0:24041b847eb5	452	#define LDIR_FstClusLO 26 /* Filled by zero (0) */
congvu	0:24041b847eb5	453	#define SZ_DIR 32 /* Size of a directory entry */
congvu	0:24041b847eb5	454	#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
congvu	0:24041b847eb5	455	#define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
congvu	0:24041b847eb5	456	#define NDDE 0x05 /* Replacement of the character collides with DDE */
congvu	0:24041b847eb5	457
congvu	0:24041b847eb5	458
congvu	0:24041b847eb5	459	/------------------------------------------------------------/
congvu	0:24041b847eb5	460	/* Module private work area */
congvu	0:24041b847eb5	461	/------------------------------------------------------------/
congvu	0:24041b847eb5	462	/* Note that uninitialized variables with static duration are
congvu	0:24041b847eb5	463	/ zeroed/nulled at start-up. If not, the compiler or start-up
congvu	0:24041b847eb5	464	/ routine is out of ANSI-C standard.
congvu	0:24041b847eb5	465	*/
congvu	0:24041b847eb5	466
congvu	0:24041b847eb5	467	#if _VOLUMES
congvu	0:24041b847eb5	468	static
congvu	0:24041b847eb5	469	FATFS FatFs[_VOLUMES]; / Pointer to the file system objects (logical drives) */
congvu	0:24041b847eb5	470	#else
congvu	0:24041b847eb5	471	#error Number of volumes must not be 0.
congvu	0:24041b847eb5	472	#endif
congvu	0:24041b847eb5	473
congvu	0:24041b847eb5	474	static
congvu	0:24041b847eb5	475	WORD Fsid; /* File system mount ID */
congvu	0:24041b847eb5	476
congvu	0:24041b847eb5	477	#if _FS_RPATH
congvu	0:24041b847eb5	478	static
congvu	0:24041b847eb5	479	BYTE CurrVol; /* Current drive */
congvu	0:24041b847eb5	480	#endif
congvu	0:24041b847eb5	481
congvu	0:24041b847eb5	482	#if _FS_LOCK
congvu	0:24041b847eb5	483	static
congvu	0:24041b847eb5	484	FILESEM Files[_FS_LOCK]; /* File lock semaphores */
congvu	0:24041b847eb5	485	#endif
congvu	0:24041b847eb5	486
congvu	0:24041b847eb5	487	#if _USE_LFN == 0 /* No LFN feature */
congvu	0:24041b847eb5	488	#define DEF_NAMEBUF BYTE sfn[12]
congvu	0:24041b847eb5	489	#define INIT_BUF(dobj) (dobj).fn = sfn
congvu	0:24041b847eb5	490	#define FREE_BUF()
congvu	0:24041b847eb5	491
congvu	0:24041b847eb5	492	#elif _USE_LFN == 1 /* LFN feature with static working buffer */
congvu	0:24041b847eb5	493	static WCHAR LfnBuf[_MAX_LFN+1];
congvu	0:24041b847eb5	494	#define DEF_NAMEBUF BYTE sfn[12]
congvu	0:24041b847eb5	495	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
congvu	0:24041b847eb5	496	#define FREE_BUF()
congvu	0:24041b847eb5	497
congvu	0:24041b847eb5	498	#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
congvu	0:24041b847eb5	499	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
congvu	0:24041b847eb5	500	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
congvu	0:24041b847eb5	501	#define FREE_BUF()
congvu	0:24041b847eb5	502
congvu	0:24041b847eb5	503	#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
congvu	0:24041b847eb5	504	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
congvu	0:24041b847eb5	505	#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
congvu	0:24041b847eb5	506	if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
congvu	0:24041b847eb5	507	(dobj).lfn = lfn; (dobj).fn = sfn; }
congvu	0:24041b847eb5	508	#define FREE_BUF() ff_memfree(lfn)
congvu	0:24041b847eb5	509
congvu	0:24041b847eb5	510	#else
congvu	0:24041b847eb5	511	#error Wrong LFN configuration.
congvu	0:24041b847eb5	512	#endif
congvu	0:24041b847eb5	513
congvu	0:24041b847eb5	514
congvu	0:24041b847eb5	515
congvu	0:24041b847eb5	516
congvu	0:24041b847eb5	517	/*--------------------------------------------------------------------------
congvu	0:24041b847eb5	518
congvu	0:24041b847eb5	519	Module Private Functions
congvu	0:24041b847eb5	520
congvu	0:24041b847eb5	521	---------------------------------------------------------------------------*/
congvu	0:24041b847eb5	522
congvu	0:24041b847eb5	523
congvu	0:24041b847eb5	524	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	525	/* String functions */
congvu	0:24041b847eb5	526	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	527
congvu	0:24041b847eb5	528	/* Copy memory to memory */
congvu	0:24041b847eb5	529	static
congvu	0:24041b847eb5	530	void mem_cpy (void* dst, const void* src, UINT cnt) {
congvu	0:24041b847eb5	531	BYTE d = (BYTE)dst;
congvu	0:24041b847eb5	532	const BYTE s = (const BYTE)src;
congvu	0:24041b847eb5	533
congvu	0:24041b847eb5	534	#if _WORD_ACCESS == 1
congvu	0:24041b847eb5	535	while (cnt >= sizeof (int)) {
congvu	0:24041b847eb5	536	(int)d = (int)s;
congvu	0:24041b847eb5	537	d += sizeof (int); s += sizeof (int);
congvu	0:24041b847eb5	538	cnt -= sizeof (int);
congvu	0:24041b847eb5	539	}
congvu	0:24041b847eb5	540	#endif
congvu	0:24041b847eb5	541	while (cnt--)
congvu	0:24041b847eb5	542	d++ = s++;
congvu	0:24041b847eb5	543	}
congvu	0:24041b847eb5	544
congvu	0:24041b847eb5	545	/* Fill memory */
congvu	0:24041b847eb5	546	static
congvu	0:24041b847eb5	547	void mem_set (void* dst, int val, UINT cnt) {
congvu	0:24041b847eb5	548	BYTE d = (BYTE)dst;
congvu	0:24041b847eb5	549
congvu	0:24041b847eb5	550	while (cnt--)
congvu	0:24041b847eb5	551	*d++ = (BYTE)val;
congvu	0:24041b847eb5	552	}
congvu	0:24041b847eb5	553
congvu	0:24041b847eb5	554	/* Compare memory to memory */
congvu	0:24041b847eb5	555	static
congvu	0:24041b847eb5	556	int mem_cmp (const void* dst, const void* src, UINT cnt) {
congvu	0:24041b847eb5	557	const BYTE d = (const BYTE )dst, s = (const BYTE )src;
congvu	0:24041b847eb5	558	int r = 0;
congvu	0:24041b847eb5	559
congvu	0:24041b847eb5	560	while (cnt-- && (r = d++ - s++) == 0) ;
congvu	0:24041b847eb5	561	return r;
congvu	0:24041b847eb5	562	}
congvu	0:24041b847eb5	563
congvu	0:24041b847eb5	564	/* Check if chr is contained in the string */
congvu	0:24041b847eb5	565	static
congvu	0:24041b847eb5	566	int chk_chr (const char* str, int chr) {
congvu	0:24041b847eb5	567	while (str && str != chr) str++;
congvu	0:24041b847eb5	568	return *str;
congvu	0:24041b847eb5	569	}
congvu	0:24041b847eb5	570
congvu	0:24041b847eb5	571
congvu	0:24041b847eb5	572
congvu	0:24041b847eb5	573	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	574	/* Request/Release grant to access the volume */
congvu	0:24041b847eb5	575	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	576	#if _FS_REENTRANT
congvu	0:24041b847eb5	577
congvu	0:24041b847eb5	578	static
congvu	0:24041b847eb5	579	int lock_fs (
congvu	0:24041b847eb5	580	FATFS fs / File system object */
congvu	0:24041b847eb5	581	)
congvu	0:24041b847eb5	582	{
congvu	0:24041b847eb5	583	return ff_req_grant(fs->sobj);
congvu	0:24041b847eb5	584	}
congvu	0:24041b847eb5	585
congvu	0:24041b847eb5	586
congvu	0:24041b847eb5	587	static
congvu	0:24041b847eb5	588	void unlock_fs (
congvu	0:24041b847eb5	589	FATFS fs, / File system object */
congvu	0:24041b847eb5	590	FRESULT res /* Result code to be returned */
congvu	0:24041b847eb5	591	)
congvu	0:24041b847eb5	592	{
congvu	0:24041b847eb5	593	if (fs &&
congvu	0:24041b847eb5	594	res != FR_NOT_ENABLED &&
congvu	0:24041b847eb5	595	res != FR_INVALID_DRIVE &&
congvu	0:24041b847eb5	596	res != FR_INVALID_OBJECT &&
congvu	0:24041b847eb5	597	res != FR_TIMEOUT) {
congvu	0:24041b847eb5	598	ff_rel_grant(fs->sobj);
congvu	0:24041b847eb5	599	}
congvu	0:24041b847eb5	600	}
congvu	0:24041b847eb5	601	#endif
congvu	0:24041b847eb5	602
congvu	0:24041b847eb5	603
congvu	0:24041b847eb5	604
congvu	0:24041b847eb5	605	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	606	/* File lock control functions */
congvu	0:24041b847eb5	607	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	608	#if _FS_LOCK
congvu	0:24041b847eb5	609
congvu	0:24041b847eb5	610	static
congvu	0:24041b847eb5	611	FRESULT chk_lock ( /* Check if the file can be accessed */
congvu	0:24041b847eb5	612	DIR* dj, /* Directory object pointing the file to be checked */
congvu	0:24041b847eb5	613	int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
congvu	0:24041b847eb5	614	)
congvu	0:24041b847eb5	615	{
congvu	0:24041b847eb5	616	UINT i, be;
congvu	0:24041b847eb5	617
congvu	0:24041b847eb5	618	/* Search file semaphore table */
congvu	0:24041b847eb5	619	for (i = be = 0; i < _FS_LOCK; i++) {
congvu	0:24041b847eb5	620	if (Files[i].fs) { /* Existing entry */
congvu	0:24041b847eb5	621	if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
congvu	0:24041b847eb5	622	Files[i].clu == dj->sclust &&
congvu	0:24041b847eb5	623	Files[i].idx == dj->index) break;
congvu	0:24041b847eb5	624	} else { /* Blank entry */
congvu	0:24041b847eb5	625	be++;
congvu	0:24041b847eb5	626	}
congvu	0:24041b847eb5	627	}
congvu	0:24041b847eb5	628	if (i == _FS_LOCK) /* The file is not opened */
congvu	0:24041b847eb5	629	return (be \|\| acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
congvu	0:24041b847eb5	630
congvu	0:24041b847eb5	631	/* The file has been opened. Reject any open against writing file and all write mode open */
congvu	0:24041b847eb5	632	return (acc \|\| Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
congvu	0:24041b847eb5	633	}
congvu	0:24041b847eb5	634
congvu	0:24041b847eb5	635
congvu	0:24041b847eb5	636	static
congvu	0:24041b847eb5	637	int enq_lock (void) /* Check if an entry is available for a new file */
congvu	0:24041b847eb5	638	{
congvu	0:24041b847eb5	639	UINT i;
congvu	0:24041b847eb5	640
congvu	0:24041b847eb5	641	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
congvu	0:24041b847eb5	642	return (i == _FS_LOCK) ? 0 : 1;
congvu	0:24041b847eb5	643	}
congvu	0:24041b847eb5	644
congvu	0:24041b847eb5	645
congvu	0:24041b847eb5	646	static
congvu	0:24041b847eb5	647	UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
congvu	0:24041b847eb5	648	DIR* dj, /* Directory object pointing the file to register or increment */
congvu	0:24041b847eb5	649	int acc /* Desired access mode (0:Read, !0:Write) */
congvu	0:24041b847eb5	650	)
congvu	0:24041b847eb5	651	{
congvu	0:24041b847eb5	652	UINT i;
congvu	0:24041b847eb5	653
congvu	0:24041b847eb5	654
congvu	0:24041b847eb5	655	for (i = 0; i < _FS_LOCK; i++) { /* Find the file */
congvu	0:24041b847eb5	656	if (Files[i].fs == dj->fs &&
congvu	0:24041b847eb5	657	Files[i].clu == dj->sclust &&
congvu	0:24041b847eb5	658	Files[i].idx == dj->index) break;
congvu	0:24041b847eb5	659	}
congvu	0:24041b847eb5	660
congvu	0:24041b847eb5	661	if (i == _FS_LOCK) { /* Not opened. Register it as new. */
congvu	0:24041b847eb5	662	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
congvu	0:24041b847eb5	663	if (i == _FS_LOCK) return 0; /* No space to register (int err) */
congvu	0:24041b847eb5	664	Files[i].fs = dj->fs;
congvu	0:24041b847eb5	665	Files[i].clu = dj->sclust;
congvu	0:24041b847eb5	666	Files[i].idx = dj->index;
congvu	0:24041b847eb5	667	Files[i].ctr = 0;
congvu	0:24041b847eb5	668	}
congvu	0:24041b847eb5	669
congvu	0:24041b847eb5	670	if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
congvu	0:24041b847eb5	671
congvu	0:24041b847eb5	672	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
congvu	0:24041b847eb5	673
congvu	0:24041b847eb5	674	return i + 1;
congvu	0:24041b847eb5	675	}
congvu	0:24041b847eb5	676
congvu	0:24041b847eb5	677
congvu	0:24041b847eb5	678	static
congvu	0:24041b847eb5	679	FRESULT dec_lock ( /* Decrement file open counter */
congvu	0:24041b847eb5	680	UINT i /* Semaphore index */
congvu	0:24041b847eb5	681	)
congvu	0:24041b847eb5	682	{
congvu	0:24041b847eb5	683	WORD n;
congvu	0:24041b847eb5	684	FRESULT res;
congvu	0:24041b847eb5	685
congvu	0:24041b847eb5	686
congvu	0:24041b847eb5	687	if (--i < _FS_LOCK) {
congvu	0:24041b847eb5	688	n = Files[i].ctr;
congvu	0:24041b847eb5	689	if (n == 0x100) n = 0;
congvu	0:24041b847eb5	690	if (n) n--;
congvu	0:24041b847eb5	691	Files[i].ctr = n;
congvu	0:24041b847eb5	692	if (!n) Files[i].fs = 0;
congvu	0:24041b847eb5	693	res = FR_OK;
congvu	0:24041b847eb5	694	} else {
congvu	0:24041b847eb5	695	res = FR_INT_ERR;
congvu	0:24041b847eb5	696	}
congvu	0:24041b847eb5	697	return res;
congvu	0:24041b847eb5	698	}
congvu	0:24041b847eb5	699
congvu	0:24041b847eb5	700
congvu	0:24041b847eb5	701	static
congvu	0:24041b847eb5	702	void clear_lock ( /* Clear lock entries of the volume */
congvu	0:24041b847eb5	703	FATFS *fs
congvu	0:24041b847eb5	704	)
congvu	0:24041b847eb5	705	{
congvu	0:24041b847eb5	706	UINT i;
congvu	0:24041b847eb5	707
congvu	0:24041b847eb5	708	for (i = 0; i < _FS_LOCK; i++) {
congvu	0:24041b847eb5	709	if (Files[i].fs == fs) Files[i].fs = 0;
congvu	0:24041b847eb5	710	}
congvu	0:24041b847eb5	711	}
congvu	0:24041b847eb5	712	#endif
congvu	0:24041b847eb5	713
congvu	0:24041b847eb5	714
congvu	0:24041b847eb5	715
congvu	0:24041b847eb5	716	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	717	/* Change window offset */
congvu	0:24041b847eb5	718	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	719
congvu	0:24041b847eb5	720	static
congvu	0:24041b847eb5	721	FRESULT move_window (
congvu	0:24041b847eb5	722	FATFS fs, / File system object */
congvu	0:24041b847eb5	723	DWORD sector /* Sector number to make appearance in the fs->win[] */
congvu	0:24041b847eb5	724	) /* Move to zero only writes back dirty window */
congvu	0:24041b847eb5	725	{
congvu	0:24041b847eb5	726	DWORD wsect;
congvu	0:24041b847eb5	727
congvu	0:24041b847eb5	728
congvu	0:24041b847eb5	729	wsect = fs->winsect;
congvu	0:24041b847eb5	730	if (wsect != sector) { /* Changed current window */
congvu	0:24041b847eb5	731	#if !_FS_READONLY
congvu	0:24041b847eb5	732	if (fs->wflag) { /* Write back dirty window if needed */
congvu	0:24041b847eb5	733	if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
congvu	0:24041b847eb5	734	return FR_DISK_ERR;
congvu	0:24041b847eb5	735	fs->wflag = 0;
congvu	0:24041b847eb5	736	if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
congvu	0:24041b847eb5	737	BYTE nf;
congvu	0:24041b847eb5	738	for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
congvu	0:24041b847eb5	739	wsect += fs->fsize;
congvu	0:24041b847eb5	740	disk_write(fs->drv, fs->win, wsect, 1);
congvu	0:24041b847eb5	741	}
congvu	0:24041b847eb5	742	}
congvu	0:24041b847eb5	743	}
congvu	0:24041b847eb5	744	#endif
congvu	0:24041b847eb5	745	if (sector) {
congvu	0:24041b847eb5	746	if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
congvu	0:24041b847eb5	747	return FR_DISK_ERR;
congvu	0:24041b847eb5	748	fs->winsect = sector;
congvu	0:24041b847eb5	749	}
congvu	0:24041b847eb5	750	}
congvu	0:24041b847eb5	751
congvu	0:24041b847eb5	752	return FR_OK;
congvu	0:24041b847eb5	753	}
congvu	0:24041b847eb5	754
congvu	0:24041b847eb5	755
congvu	0:24041b847eb5	756
congvu	0:24041b847eb5	757
congvu	0:24041b847eb5	758	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	759	/* Clean-up cached data */
congvu	0:24041b847eb5	760	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	761	#if !_FS_READONLY
congvu	0:24041b847eb5	762	static
congvu	0:24041b847eb5	763	FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
congvu	0:24041b847eb5	764	FATFS fs / File system object */
congvu	0:24041b847eb5	765	)
congvu	0:24041b847eb5	766	{
congvu	0:24041b847eb5	767	FRESULT res;
congvu	0:24041b847eb5	768
congvu	0:24041b847eb5	769
congvu	0:24041b847eb5	770	res = move_window(fs, 0);
congvu	0:24041b847eb5	771	if (res == FR_OK) {
congvu	0:24041b847eb5	772	/* Update FSInfo sector if needed */
congvu	0:24041b847eb5	773	if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
congvu	0:24041b847eb5	774	fs->winsect = 0;
congvu	0:24041b847eb5	775	/* Create FSInfo structure */
congvu	0:24041b847eb5	776	mem_set(fs->win, 0, 512);
congvu	0:24041b847eb5	777	ST_WORD(fs->win+BS_55AA, 0xAA55);
congvu	0:24041b847eb5	778	ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
congvu	0:24041b847eb5	779	ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
congvu	0:24041b847eb5	780	ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
congvu	0:24041b847eb5	781	ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
congvu	0:24041b847eb5	782	/* Write it into the FSInfo sector */
congvu	0:24041b847eb5	783	disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
congvu	0:24041b847eb5	784	fs->fsi_flag = 0;
congvu	0:24041b847eb5	785	}
congvu	0:24041b847eb5	786	/* Make sure that no pending write process in the physical drive */
congvu	0:24041b847eb5	787	if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
congvu	0:24041b847eb5	788	res = FR_DISK_ERR;
congvu	0:24041b847eb5	789	}
congvu	0:24041b847eb5	790
congvu	0:24041b847eb5	791	return res;
congvu	0:24041b847eb5	792	}
congvu	0:24041b847eb5	793	#endif
congvu	0:24041b847eb5	794
congvu	0:24041b847eb5	795
congvu	0:24041b847eb5	796
congvu	0:24041b847eb5	797
congvu	0:24041b847eb5	798	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	799	/* Get sector# from cluster# */
congvu	0:24041b847eb5	800	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	801
congvu	0:24041b847eb5	802
congvu	0:24041b847eb5	803	DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
congvu	0:24041b847eb5	804	FATFS fs, / File system object */
congvu	0:24041b847eb5	805	DWORD clst /* Cluster# to be converted */
congvu	0:24041b847eb5	806	)
congvu	0:24041b847eb5	807	{
congvu	0:24041b847eb5	808	clst -= 2;
congvu	0:24041b847eb5	809	if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
congvu	0:24041b847eb5	810	return clst * fs->csize + fs->database;
congvu	0:24041b847eb5	811	}
congvu	0:24041b847eb5	812
congvu	0:24041b847eb5	813
congvu	0:24041b847eb5	814
congvu	0:24041b847eb5	815
congvu	0:24041b847eb5	816	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	817	/* FAT access - Read value of a FAT entry */
congvu	0:24041b847eb5	818	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	819
congvu	0:24041b847eb5	820
congvu	0:24041b847eb5	821	DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
congvu	0:24041b847eb5	822	FATFS fs, / File system object */
congvu	0:24041b847eb5	823	DWORD clst /* Cluster# to get the link information */
congvu	0:24041b847eb5	824	)
congvu	0:24041b847eb5	825	{
congvu	0:24041b847eb5	826	UINT wc, bc;
congvu	0:24041b847eb5	827	BYTE *p;
congvu	0:24041b847eb5	828
congvu	0:24041b847eb5	829
congvu	0:24041b847eb5	830	if (clst < 2 \|\| clst >= fs->n_fatent) /* Check range */
congvu	0:24041b847eb5	831	return 1;
congvu	0:24041b847eb5	832
congvu	0:24041b847eb5	833	switch (fs->fs_type) {
congvu	0:24041b847eb5	834	case FS_FAT12 :
congvu	0:24041b847eb5	835	bc = (UINT)clst; bc += bc / 2;
congvu	0:24041b847eb5	836	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
congvu	0:24041b847eb5	837	wc = fs->win[bc % SS(fs)]; bc++;
congvu	0:24041b847eb5	838	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
congvu	0:24041b847eb5	839	wc \|= fs->win[bc % SS(fs)] << 8;
congvu	0:24041b847eb5	840	return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
congvu	0:24041b847eb5	841
congvu	0:24041b847eb5	842	case FS_FAT16 :
congvu	0:24041b847eb5	843	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
congvu	0:24041b847eb5	844	p = &fs->win[clst * 2 % SS(fs)];
congvu	0:24041b847eb5	845	return LD_WORD(p);
congvu	0:24041b847eb5	846
congvu	0:24041b847eb5	847	case FS_FAT32 :
congvu	0:24041b847eb5	848	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
congvu	0:24041b847eb5	849	p = &fs->win[clst * 4 % SS(fs)];
congvu	0:24041b847eb5	850	return LD_DWORD(p) & 0x0FFFFFFF;
congvu	0:24041b847eb5	851	}
congvu	0:24041b847eb5	852
congvu	0:24041b847eb5	853	return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
congvu	0:24041b847eb5	854	}
congvu	0:24041b847eb5	855
congvu	0:24041b847eb5	856
congvu	0:24041b847eb5	857
congvu	0:24041b847eb5	858
congvu	0:24041b847eb5	859	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	860	/* FAT access - Change value of a FAT entry */
congvu	0:24041b847eb5	861	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	862	#if !_FS_READONLY
congvu	0:24041b847eb5	863
congvu	0:24041b847eb5	864	FRESULT put_fat (
congvu	0:24041b847eb5	865	FATFS fs, / File system object */
congvu	0:24041b847eb5	866	DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
congvu	0:24041b847eb5	867	DWORD val /* New value to mark the cluster */
congvu	0:24041b847eb5	868	)
congvu	0:24041b847eb5	869	{
congvu	0:24041b847eb5	870	UINT bc;
congvu	0:24041b847eb5	871	BYTE *p;
congvu	0:24041b847eb5	872	FRESULT res;
congvu	0:24041b847eb5	873
congvu	0:24041b847eb5	874
congvu	0:24041b847eb5	875	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
congvu	0:24041b847eb5	876	res = FR_INT_ERR;
congvu	0:24041b847eb5	877
congvu	0:24041b847eb5	878	} else {
congvu	0:24041b847eb5	879	switch (fs->fs_type) {
congvu	0:24041b847eb5	880	case FS_FAT12 :
congvu	0:24041b847eb5	881	bc = (UINT)clst; bc += bc / 2;
congvu	0:24041b847eb5	882	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
congvu	0:24041b847eb5	883	if (res != FR_OK) break;
congvu	0:24041b847eb5	884	p = &fs->win[bc % SS(fs)];
congvu	0:24041b847eb5	885	p = (clst & 1) ? ((p & 0x0F) \| ((BYTE)val << 4)) : (BYTE)val;
congvu	0:24041b847eb5	886	bc++;
congvu	0:24041b847eb5	887	fs->wflag = 1;
congvu	0:24041b847eb5	888	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
congvu	0:24041b847eb5	889	if (res != FR_OK) break;
congvu	0:24041b847eb5	890	p = &fs->win[bc % SS(fs)];
congvu	0:24041b847eb5	891	p = (clst & 1) ? (BYTE)(val >> 4) : ((p & 0xF0) \| ((BYTE)(val >> 8) & 0x0F));
congvu	0:24041b847eb5	892	break;
congvu	0:24041b847eb5	893
congvu	0:24041b847eb5	894	case FS_FAT16 :
congvu	0:24041b847eb5	895	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
congvu	0:24041b847eb5	896	if (res != FR_OK) break;
congvu	0:24041b847eb5	897	p = &fs->win[clst * 2 % SS(fs)];
congvu	0:24041b847eb5	898	ST_WORD(p, (WORD)val);
congvu	0:24041b847eb5	899	break;
congvu	0:24041b847eb5	900
congvu	0:24041b847eb5	901	case FS_FAT32 :
congvu	0:24041b847eb5	902	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
congvu	0:24041b847eb5	903	if (res != FR_OK) break;
congvu	0:24041b847eb5	904	p = &fs->win[clst * 4 % SS(fs)];
congvu	0:24041b847eb5	905	val \|= LD_DWORD(p) & 0xF0000000;
congvu	0:24041b847eb5	906	ST_DWORD(p, val);
congvu	0:24041b847eb5	907	break;
congvu	0:24041b847eb5	908
congvu	0:24041b847eb5	909	default :
congvu	0:24041b847eb5	910	res = FR_INT_ERR;
congvu	0:24041b847eb5	911	}
congvu	0:24041b847eb5	912	fs->wflag = 1;
congvu	0:24041b847eb5	913	}
congvu	0:24041b847eb5	914
congvu	0:24041b847eb5	915	return res;
congvu	0:24041b847eb5	916	}
congvu	0:24041b847eb5	917	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	918
congvu	0:24041b847eb5	919
congvu	0:24041b847eb5	920
congvu	0:24041b847eb5	921
congvu	0:24041b847eb5	922	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	923	/* FAT handling - Remove a cluster chain */
congvu	0:24041b847eb5	924	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	925	#if !_FS_READONLY
congvu	0:24041b847eb5	926	static
congvu	0:24041b847eb5	927	FRESULT remove_chain (
congvu	0:24041b847eb5	928	FATFS fs, / File system object */
congvu	0:24041b847eb5	929	DWORD clst /* Cluster# to remove a chain from */
congvu	0:24041b847eb5	930	)
congvu	0:24041b847eb5	931	{
congvu	0:24041b847eb5	932	FRESULT res;
congvu	0:24041b847eb5	933	DWORD nxt;
congvu	0:24041b847eb5	934	#if _USE_ERASE
congvu	0:24041b847eb5	935	DWORD scl = clst, ecl = clst, rt[2];
congvu	0:24041b847eb5	936	#endif
congvu	0:24041b847eb5	937
congvu	0:24041b847eb5	938	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
congvu	0:24041b847eb5	939	res = FR_INT_ERR;
congvu	0:24041b847eb5	940
congvu	0:24041b847eb5	941	} else {
congvu	0:24041b847eb5	942	res = FR_OK;
congvu	0:24041b847eb5	943	while (clst < fs->n_fatent) { /* Not a last link? */
congvu	0:24041b847eb5	944	nxt = get_fat(fs, clst); /* Get cluster status */
congvu	0:24041b847eb5	945	if (nxt == 0) break; /* Empty cluster? */
congvu	0:24041b847eb5	946	if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
congvu	0:24041b847eb5	947	if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
congvu	0:24041b847eb5	948	res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
congvu	0:24041b847eb5	949	if (res != FR_OK) break;
congvu	0:24041b847eb5	950	if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
congvu	0:24041b847eb5	951	fs->free_clust++;
congvu	0:24041b847eb5	952	fs->fsi_flag = 1;
congvu	0:24041b847eb5	953	}
congvu	0:24041b847eb5	954	#if _USE_ERASE
congvu	0:24041b847eb5	955	if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
congvu	0:24041b847eb5	956	ecl = nxt;
congvu	0:24041b847eb5	957	} else { /* End of contiguous clusters */
congvu	0:24041b847eb5	958	rt[0] = clust2sect(fs, scl); /* Start sector */
congvu	0:24041b847eb5	959	rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
congvu	0:24041b847eb5	960	disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, rt); /* Erase the block */
congvu	0:24041b847eb5	961	scl = ecl = nxt;
congvu	0:24041b847eb5	962	}
congvu	0:24041b847eb5	963	#endif
congvu	0:24041b847eb5	964	clst = nxt; /* Next cluster */
congvu	0:24041b847eb5	965	}
congvu	0:24041b847eb5	966	}
congvu	0:24041b847eb5	967
congvu	0:24041b847eb5	968	return res;
congvu	0:24041b847eb5	969	}
congvu	0:24041b847eb5	970	#endif
congvu	0:24041b847eb5	971
congvu	0:24041b847eb5	972
congvu	0:24041b847eb5	973
congvu	0:24041b847eb5	974
congvu	0:24041b847eb5	975	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	976	/* FAT handling - Stretch or Create a cluster chain */
congvu	0:24041b847eb5	977	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	978	#if !_FS_READONLY
congvu	0:24041b847eb5	979	static
congvu	0:24041b847eb5	980	DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
congvu	0:24041b847eb5	981	FATFS fs, / File system object */
congvu	0:24041b847eb5	982	DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
congvu	0:24041b847eb5	983	)
congvu	0:24041b847eb5	984	{
congvu	0:24041b847eb5	985	DWORD cs, ncl, scl;
congvu	0:24041b847eb5	986	FRESULT res;
congvu	0:24041b847eb5	987
congvu	0:24041b847eb5	988
congvu	0:24041b847eb5	989	if (clst == 0) { /* Create a new chain */
congvu	0:24041b847eb5	990	scl = fs->last_clust; /* Get suggested start point */
congvu	0:24041b847eb5	991	if (!scl \|\| scl >= fs->n_fatent) scl = 1;
congvu	0:24041b847eb5	992	}
congvu	0:24041b847eb5	993	else { /* Stretch the current chain */
congvu	0:24041b847eb5	994	cs = get_fat(fs, clst); /* Check the cluster status */
congvu	0:24041b847eb5	995	if (cs < 2) return 1; /* It is an invalid cluster */
congvu	0:24041b847eb5	996	if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
congvu	0:24041b847eb5	997	scl = clst;
congvu	0:24041b847eb5	998	}
congvu	0:24041b847eb5	999
congvu	0:24041b847eb5	1000	ncl = scl; /* Start cluster */
congvu	0:24041b847eb5	1001	for (;;) {
congvu	0:24041b847eb5	1002	ncl++; /* Next cluster */
congvu	0:24041b847eb5	1003	if (ncl >= fs->n_fatent) { /* Wrap around */
congvu	0:24041b847eb5	1004	ncl = 2;
congvu	0:24041b847eb5	1005	if (ncl > scl) return 0; /* No free cluster */
congvu	0:24041b847eb5	1006	}
congvu	0:24041b847eb5	1007	cs = get_fat(fs, ncl); /* Get the cluster status */
congvu	0:24041b847eb5	1008	if (cs == 0) break; /* Found a free cluster */
congvu	0:24041b847eb5	1009	if (cs == 0xFFFFFFFF \|\| cs == 1)/* An error occurred */
congvu	0:24041b847eb5	1010	return cs;
congvu	0:24041b847eb5	1011	if (ncl == scl) return 0; /* No free cluster */
congvu	0:24041b847eb5	1012	}
congvu	0:24041b847eb5	1013
congvu	0:24041b847eb5	1014	res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
congvu	0:24041b847eb5	1015	if (res == FR_OK && clst != 0) {
congvu	0:24041b847eb5	1016	res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
congvu	0:24041b847eb5	1017	}
congvu	0:24041b847eb5	1018	if (res == FR_OK) {
congvu	0:24041b847eb5	1019	fs->last_clust = ncl; /* Update FSINFO */
congvu	0:24041b847eb5	1020	if (fs->free_clust != 0xFFFFFFFF) {
congvu	0:24041b847eb5	1021	fs->free_clust--;
congvu	0:24041b847eb5	1022	fs->fsi_flag = 1;
congvu	0:24041b847eb5	1023	}
congvu	0:24041b847eb5	1024	} else {
congvu	0:24041b847eb5	1025	ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
congvu	0:24041b847eb5	1026	}
congvu	0:24041b847eb5	1027
congvu	0:24041b847eb5	1028	return ncl; /* Return new cluster number or error code */
congvu	0:24041b847eb5	1029	}
congvu	0:24041b847eb5	1030	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	1031
congvu	0:24041b847eb5	1032
congvu	0:24041b847eb5	1033
congvu	0:24041b847eb5	1034	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1035	/* FAT handling - Convert offset into cluster with link map table */
congvu	0:24041b847eb5	1036	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1037
congvu	0:24041b847eb5	1038	#if _USE_FASTSEEK
congvu	0:24041b847eb5	1039	static
congvu	0:24041b847eb5	1040	DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
congvu	0:24041b847eb5	1041	FIL* fp, /* Pointer to the file object */
congvu	0:24041b847eb5	1042	DWORD ofs /* File offset to be converted to cluster# */
congvu	0:24041b847eb5	1043	)
congvu	0:24041b847eb5	1044	{
congvu	0:24041b847eb5	1045	DWORD cl, ncl, *tbl;
congvu	0:24041b847eb5	1046
congvu	0:24041b847eb5	1047
congvu	0:24041b847eb5	1048	tbl = fp->cltbl + 1; /* Top of CLMT */
congvu	0:24041b847eb5	1049	cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
congvu	0:24041b847eb5	1050	for (;;) {
congvu	0:24041b847eb5	1051	ncl = tbl++; / Number of cluters in the fragment */
congvu	0:24041b847eb5	1052	if (!ncl) return 0; /* End of table? (error) */
congvu	0:24041b847eb5	1053	if (cl < ncl) break; /* In this fragment? */
congvu	0:24041b847eb5	1054	cl -= ncl; tbl++; /* Next fragment */
congvu	0:24041b847eb5	1055	}
congvu	0:24041b847eb5	1056	return cl + tbl; / Return the cluster number */
congvu	0:24041b847eb5	1057	}
congvu	0:24041b847eb5	1058	#endif /* _USE_FASTSEEK */
congvu	0:24041b847eb5	1059
congvu	0:24041b847eb5	1060
congvu	0:24041b847eb5	1061
congvu	0:24041b847eb5	1062	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1063	/* Directory handling - Set directory index */
congvu	0:24041b847eb5	1064	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1065
congvu	0:24041b847eb5	1066	static
congvu	0:24041b847eb5	1067	FRESULT dir_sdi (
congvu	0:24041b847eb5	1068	FATFS_DIR dj, / Pointer to directory object */
congvu	0:24041b847eb5	1069	WORD idx /* Index of directory table */
congvu	0:24041b847eb5	1070	)
congvu	0:24041b847eb5	1071	{
congvu	0:24041b847eb5	1072	DWORD clst;
congvu	0:24041b847eb5	1073	WORD ic;
congvu	0:24041b847eb5	1074
congvu	0:24041b847eb5	1075
congvu	0:24041b847eb5	1076	dj->index = idx;
congvu	0:24041b847eb5	1077	clst = dj->sclust;
congvu	0:24041b847eb5	1078	if (clst == 1 \|\| clst >= dj->fs->n_fatent) /* Check start cluster range */
congvu	0:24041b847eb5	1079	return FR_INT_ERR;
congvu	0:24041b847eb5	1080	if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
congvu	0:24041b847eb5	1081	clst = dj->fs->dirbase;
congvu	0:24041b847eb5	1082
congvu	0:24041b847eb5	1083	if (clst == 0) { /* Static table (root-dir in FAT12/16) */
congvu	0:24041b847eb5	1084	dj->clust = clst;
congvu	0:24041b847eb5	1085	if (idx >= dj->fs->n_rootdir) /* Index is out of range */
congvu	0:24041b847eb5	1086	return FR_INT_ERR;
congvu	0:24041b847eb5	1087	dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
congvu	0:24041b847eb5	1088	}
congvu	0:24041b847eb5	1089	else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
congvu	0:24041b847eb5	1090	ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
congvu	0:24041b847eb5	1091	while (idx >= ic) { /* Follow cluster chain */
congvu	0:24041b847eb5	1092	clst = get_fat(dj->fs, clst); /* Get next cluster */
congvu	0:24041b847eb5	1093	if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
congvu	0:24041b847eb5	1094	if (clst < 2 \|\| clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
congvu	0:24041b847eb5	1095	return FR_INT_ERR;
congvu	0:24041b847eb5	1096	idx -= ic;
congvu	0:24041b847eb5	1097	}
congvu	0:24041b847eb5	1098	dj->clust = clst;
congvu	0:24041b847eb5	1099	dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
congvu	0:24041b847eb5	1100	}
congvu	0:24041b847eb5	1101
congvu	0:24041b847eb5	1102	dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
congvu	0:24041b847eb5	1103
congvu	0:24041b847eb5	1104	return FR_OK; /* Seek succeeded */
congvu	0:24041b847eb5	1105	}
congvu	0:24041b847eb5	1106
congvu	0:24041b847eb5	1107
congvu	0:24041b847eb5	1108
congvu	0:24041b847eb5	1109
congvu	0:24041b847eb5	1110	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1111	/* Directory handling - Move directory table index next */
congvu	0:24041b847eb5	1112	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1113
congvu	0:24041b847eb5	1114	static
congvu	0:24041b847eb5	1115	FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
congvu	0:24041b847eb5	1116	FATFS_DIR dj, / Pointer to directory object */
congvu	0:24041b847eb5	1117	int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
congvu	0:24041b847eb5	1118	)
congvu	0:24041b847eb5	1119	{
congvu	0:24041b847eb5	1120	DWORD clst;
congvu	0:24041b847eb5	1121	WORD i;
congvu	0:24041b847eb5	1122
congvu	0:24041b847eb5	1123
congvu	0:24041b847eb5	1124	stretch = stretch; /* To suppress warning on read-only cfg. */
congvu	0:24041b847eb5	1125	i = dj->index + 1;
congvu	0:24041b847eb5	1126	if (!i \|\| !dj->sect) /* Report EOT when index has reached 65535 */
congvu	0:24041b847eb5	1127	return FR_NO_FILE;
congvu	0:24041b847eb5	1128
congvu	0:24041b847eb5	1129	if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
congvu	0:24041b847eb5	1130	dj->sect++; /* Next sector */
congvu	0:24041b847eb5	1131
congvu	0:24041b847eb5	1132	if (dj->clust == 0) { /* Static table */
congvu	0:24041b847eb5	1133	if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
congvu	0:24041b847eb5	1134	return FR_NO_FILE;
congvu	0:24041b847eb5	1135	}
congvu	0:24041b847eb5	1136	else { /* Dynamic table */
congvu	0:24041b847eb5	1137	if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
congvu	0:24041b847eb5	1138	clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
congvu	0:24041b847eb5	1139	if (clst <= 1) return FR_INT_ERR;
congvu	0:24041b847eb5	1140	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
congvu	0:24041b847eb5	1141	if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
congvu	0:24041b847eb5	1142	#if !_FS_READONLY
congvu	0:24041b847eb5	1143	BYTE c;
congvu	0:24041b847eb5	1144	if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
congvu	0:24041b847eb5	1145	clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
congvu	0:24041b847eb5	1146	if (clst == 0) return FR_DENIED; /* No free cluster */
congvu	0:24041b847eb5	1147	if (clst == 1) return FR_INT_ERR;
congvu	0:24041b847eb5	1148	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
congvu	0:24041b847eb5	1149	/* Clean-up stretched table */
congvu	0:24041b847eb5	1150	if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
congvu	0:24041b847eb5	1151	mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
congvu	0:24041b847eb5	1152	dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
congvu	0:24041b847eb5	1153	for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
congvu	0:24041b847eb5	1154	dj->fs->wflag = 1;
congvu	0:24041b847eb5	1155	if (move_window(dj->fs, 0)) return FR_DISK_ERR;
congvu	0:24041b847eb5	1156	dj->fs->winsect++;
congvu	0:24041b847eb5	1157	}
congvu	0:24041b847eb5	1158	dj->fs->winsect -= c; /* Rewind window address */
congvu	0:24041b847eb5	1159	#else
congvu	0:24041b847eb5	1160	return FR_NO_FILE; /* Report EOT */
congvu	0:24041b847eb5	1161	#endif
congvu	0:24041b847eb5	1162	}
congvu	0:24041b847eb5	1163	dj->clust = clst; /* Initialize data for new cluster */
congvu	0:24041b847eb5	1164	dj->sect = clust2sect(dj->fs, clst);
congvu	0:24041b847eb5	1165	}
congvu	0:24041b847eb5	1166	}
congvu	0:24041b847eb5	1167	}
congvu	0:24041b847eb5	1168
congvu	0:24041b847eb5	1169	dj->index = i;
congvu	0:24041b847eb5	1170	dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
congvu	0:24041b847eb5	1171
congvu	0:24041b847eb5	1172	return FR_OK;
congvu	0:24041b847eb5	1173	}
congvu	0:24041b847eb5	1174
congvu	0:24041b847eb5	1175
congvu	0:24041b847eb5	1176
congvu	0:24041b847eb5	1177
congvu	0:24041b847eb5	1178	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1179	/* Directory handling - Load/Store start cluster number */
congvu	0:24041b847eb5	1180	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1181
congvu	0:24041b847eb5	1182	static
congvu	0:24041b847eb5	1183	DWORD ld_clust (
congvu	0:24041b847eb5	1184	FATFS fs, / Pointer to the fs object */
congvu	0:24041b847eb5	1185	BYTE dir / Pointer to the directory entry */
congvu	0:24041b847eb5	1186	)
congvu	0:24041b847eb5	1187	{
congvu	0:24041b847eb5	1188	DWORD cl;
congvu	0:24041b847eb5	1189
congvu	0:24041b847eb5	1190	cl = LD_WORD(dir+DIR_FstClusLO);
congvu	0:24041b847eb5	1191	if (fs->fs_type == FS_FAT32)
congvu	0:24041b847eb5	1192	cl \|= (DWORD)LD_WORD(dir+DIR_FstClusHI) << 16;
congvu	0:24041b847eb5	1193
congvu	0:24041b847eb5	1194	return cl;
congvu	0:24041b847eb5	1195	}
congvu	0:24041b847eb5	1196
congvu	0:24041b847eb5	1197
congvu	0:24041b847eb5	1198	#if !_FS_READONLY
congvu	0:24041b847eb5	1199	static
congvu	0:24041b847eb5	1200	void st_clust (
congvu	0:24041b847eb5	1201	BYTE dir, / Pointer to the directory entry */
congvu	0:24041b847eb5	1202	DWORD cl /* Value to be set */
congvu	0:24041b847eb5	1203	)
congvu	0:24041b847eb5	1204	{
congvu	0:24041b847eb5	1205	ST_WORD(dir+DIR_FstClusLO, cl);
congvu	0:24041b847eb5	1206	ST_WORD(dir+DIR_FstClusHI, cl >> 16);
congvu	0:24041b847eb5	1207	}
congvu	0:24041b847eb5	1208	#endif
congvu	0:24041b847eb5	1209
congvu	0:24041b847eb5	1210
congvu	0:24041b847eb5	1211
congvu	0:24041b847eb5	1212	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1213	/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
congvu	0:24041b847eb5	1214	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1215	#if _USE_LFN
congvu	0:24041b847eb5	1216	static
congvu	0:24041b847eb5	1217	const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
congvu	0:24041b847eb5	1218
congvu	0:24041b847eb5	1219
congvu	0:24041b847eb5	1220	static
congvu	0:24041b847eb5	1221	int cmp_lfn ( /* 1:Matched, 0:Not matched */
congvu	0:24041b847eb5	1222	WCHAR lfnbuf, / Pointer to the LFN to be compared */
congvu	0:24041b847eb5	1223	BYTE dir / Pointer to the directory entry containing a part of LFN */
congvu	0:24041b847eb5	1224	)
congvu	0:24041b847eb5	1225	{
congvu	0:24041b847eb5	1226	UINT i, s;
congvu	0:24041b847eb5	1227	WCHAR wc, uc;
congvu	0:24041b847eb5	1228
congvu	0:24041b847eb5	1229
congvu	0:24041b847eb5	1230	i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
congvu	0:24041b847eb5	1231	s = 0; wc = 1;
congvu	0:24041b847eb5	1232	do {
congvu	0:24041b847eb5	1233	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
congvu	0:24041b847eb5	1234	if (wc) { /* Last char has not been processed */
congvu	0:24041b847eb5	1235	wc = ff_wtoupper(uc); /* Convert it to upper case */
congvu	0:24041b847eb5	1236	if (i >= _MAX_LFN \|\| wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
congvu	0:24041b847eb5	1237	return 0; /* Not matched */
congvu	0:24041b847eb5	1238	} else {
congvu	0:24041b847eb5	1239	if (uc != 0xFFFF) return 0; /* Check filler */
congvu	0:24041b847eb5	1240	}
congvu	0:24041b847eb5	1241	} while (++s < 13); /* Repeat until all chars in the entry are checked */
congvu	0:24041b847eb5	1242
congvu	0:24041b847eb5	1243	if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
congvu	0:24041b847eb5	1244	return 0;
congvu	0:24041b847eb5	1245
congvu	0:24041b847eb5	1246	return 1; /* The part of LFN matched */
congvu	0:24041b847eb5	1247	}
congvu	0:24041b847eb5	1248
congvu	0:24041b847eb5	1249
congvu	0:24041b847eb5	1250
congvu	0:24041b847eb5	1251	static
congvu	0:24041b847eb5	1252	int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
congvu	0:24041b847eb5	1253	WCHAR lfnbuf, / Pointer to the Unicode-LFN buffer */
congvu	0:24041b847eb5	1254	BYTE dir / Pointer to the directory entry */
congvu	0:24041b847eb5	1255	)
congvu	0:24041b847eb5	1256	{
congvu	0:24041b847eb5	1257	UINT i, s;
congvu	0:24041b847eb5	1258	WCHAR wc, uc;
congvu	0:24041b847eb5	1259
congvu	0:24041b847eb5	1260
congvu	0:24041b847eb5	1261	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
congvu	0:24041b847eb5	1262
congvu	0:24041b847eb5	1263	s = 0; wc = 1;
congvu	0:24041b847eb5	1264	do {
congvu	0:24041b847eb5	1265	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
congvu	0:24041b847eb5	1266	if (wc) { /* Last char has not been processed */
congvu	0:24041b847eb5	1267	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
congvu	0:24041b847eb5	1268	lfnbuf[i++] = wc = uc; /* Store it */
congvu	0:24041b847eb5	1269	} else {
congvu	0:24041b847eb5	1270	if (uc != 0xFFFF) return 0; /* Check filler */
congvu	0:24041b847eb5	1271	}
congvu	0:24041b847eb5	1272	} while (++s < 13); /* Read all character in the entry */
congvu	0:24041b847eb5	1273
congvu	0:24041b847eb5	1274	if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
congvu	0:24041b847eb5	1275	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
congvu	0:24041b847eb5	1276	lfnbuf[i] = 0;
congvu	0:24041b847eb5	1277	}
congvu	0:24041b847eb5	1278
congvu	0:24041b847eb5	1279	return 1;
congvu	0:24041b847eb5	1280	}
congvu	0:24041b847eb5	1281
congvu	0:24041b847eb5	1282
congvu	0:24041b847eb5	1283	#if !_FS_READONLY
congvu	0:24041b847eb5	1284	static
congvu	0:24041b847eb5	1285	void fit_lfn (
congvu	0:24041b847eb5	1286	const WCHAR lfnbuf, / Pointer to the LFN buffer */
congvu	0:24041b847eb5	1287	BYTE dir, / Pointer to the directory entry */
congvu	0:24041b847eb5	1288	BYTE ord, /* LFN order (1-20) */
congvu	0:24041b847eb5	1289	BYTE sum /* SFN sum */
congvu	0:24041b847eb5	1290	)
congvu	0:24041b847eb5	1291	{
congvu	0:24041b847eb5	1292	UINT i, s;
congvu	0:24041b847eb5	1293	WCHAR wc;
congvu	0:24041b847eb5	1294
congvu	0:24041b847eb5	1295
congvu	0:24041b847eb5	1296	dir[LDIR_Chksum] = sum; /* Set check sum */
congvu	0:24041b847eb5	1297	dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
congvu	0:24041b847eb5	1298	dir[LDIR_Type] = 0;
congvu	0:24041b847eb5	1299	ST_WORD(dir+LDIR_FstClusLO, 0);
congvu	0:24041b847eb5	1300
congvu	0:24041b847eb5	1301	i = (ord - 1) * 13; /* Get offset in the LFN buffer */
congvu	0:24041b847eb5	1302	s = wc = 0;
congvu	0:24041b847eb5	1303	do {
congvu	0:24041b847eb5	1304	if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
congvu	0:24041b847eb5	1305	ST_WORD(dir+LfnOfs[s], wc); /* Put it */
congvu	0:24041b847eb5	1306	if (!wc) wc = 0xFFFF; /* Padding chars following last char */
congvu	0:24041b847eb5	1307	} while (++s < 13);
congvu	0:24041b847eb5	1308	if (wc == 0xFFFF \|\| !lfnbuf[i]) ord \|= LLE; /* Bottom LFN part is the start of LFN sequence */
congvu	0:24041b847eb5	1309	dir[LDIR_Ord] = ord; /* Set the LFN order */
congvu	0:24041b847eb5	1310	}
congvu	0:24041b847eb5	1311
congvu	0:24041b847eb5	1312	#endif
congvu	0:24041b847eb5	1313	#endif
congvu	0:24041b847eb5	1314
congvu	0:24041b847eb5	1315
congvu	0:24041b847eb5	1316
congvu	0:24041b847eb5	1317	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1318	/* Create numbered name */
congvu	0:24041b847eb5	1319	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1320	#if _USE_LFN
congvu	0:24041b847eb5	1321	void gen_numname (
congvu	0:24041b847eb5	1322	BYTE dst, / Pointer to generated SFN */
congvu	0:24041b847eb5	1323	const BYTE src, / Pointer to source SFN to be modified */
congvu	0:24041b847eb5	1324	const WCHAR lfn, / Pointer to LFN */
congvu	0:24041b847eb5	1325	WORD seq /* Sequence number */
congvu	0:24041b847eb5	1326	)
congvu	0:24041b847eb5	1327	{
congvu	0:24041b847eb5	1328	BYTE ns[8], c;
congvu	0:24041b847eb5	1329	UINT i, j;
congvu	0:24041b847eb5	1330
congvu	0:24041b847eb5	1331
congvu	0:24041b847eb5	1332	mem_cpy(dst, src, 11);
congvu	0:24041b847eb5	1333
congvu	0:24041b847eb5	1334	if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
congvu	0:24041b847eb5	1335	do seq = (seq >> 1) + (seq << 15) + (WORD)lfn++; while (lfn);
congvu	0:24041b847eb5	1336	}
congvu	0:24041b847eb5	1337
congvu	0:24041b847eb5	1338	/* itoa (hexdecimal) */
congvu	0:24041b847eb5	1339	i = 7;
congvu	0:24041b847eb5	1340	do {
congvu	0:24041b847eb5	1341	c = (seq % 16) + '0';
congvu	0:24041b847eb5	1342	if (c > '9') c += 7;
congvu	0:24041b847eb5	1343	ns[i--] = c;
congvu	0:24041b847eb5	1344	seq /= 16;
congvu	0:24041b847eb5	1345	} while (seq);
congvu	0:24041b847eb5	1346	ns[i] = '~';
congvu	0:24041b847eb5	1347
congvu	0:24041b847eb5	1348	/* Append the number */
congvu	0:24041b847eb5	1349	for (j = 0; j < i && dst[j] != ' '; j++) {
congvu	0:24041b847eb5	1350	if (IsDBCS1(dst[j])) {
congvu	0:24041b847eb5	1351	if (j == i - 1) break;
congvu	0:24041b847eb5	1352	j++;
congvu	0:24041b847eb5	1353	}
congvu	0:24041b847eb5	1354	}
congvu	0:24041b847eb5	1355	do {
congvu	0:24041b847eb5	1356	dst[j++] = (i < 8) ? ns[i++] : ' ';
congvu	0:24041b847eb5	1357	} while (j < 8);
congvu	0:24041b847eb5	1358	}
congvu	0:24041b847eb5	1359	#endif
congvu	0:24041b847eb5	1360
congvu	0:24041b847eb5	1361
congvu	0:24041b847eb5	1362
congvu	0:24041b847eb5	1363
congvu	0:24041b847eb5	1364	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1365	/* Calculate sum of an SFN */
congvu	0:24041b847eb5	1366	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1367	#if _USE_LFN
congvu	0:24041b847eb5	1368	static
congvu	0:24041b847eb5	1369	BYTE sum_sfn (
congvu	0:24041b847eb5	1370	const BYTE dir / Ptr to directory entry */
congvu	0:24041b847eb5	1371	)
congvu	0:24041b847eb5	1372	{
congvu	0:24041b847eb5	1373	BYTE sum = 0;
congvu	0:24041b847eb5	1374	UINT n = 11;
congvu	0:24041b847eb5	1375
congvu	0:24041b847eb5	1376	do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
congvu	0:24041b847eb5	1377	return sum;
congvu	0:24041b847eb5	1378	}
congvu	0:24041b847eb5	1379	#endif
congvu	0:24041b847eb5	1380
congvu	0:24041b847eb5	1381
congvu	0:24041b847eb5	1382
congvu	0:24041b847eb5	1383
congvu	0:24041b847eb5	1384	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1385	/* Directory handling - Find an object in the directory */
congvu	0:24041b847eb5	1386	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1387
congvu	0:24041b847eb5	1388	static
congvu	0:24041b847eb5	1389	FRESULT dir_find (
congvu	0:24041b847eb5	1390	FATFS_DIR dj / Pointer to the directory object linked to the file name */
congvu	0:24041b847eb5	1391	)
congvu	0:24041b847eb5	1392	{
congvu	0:24041b847eb5	1393	FRESULT res;
congvu	0:24041b847eb5	1394	BYTE c, *dir;
congvu	0:24041b847eb5	1395	#if _USE_LFN
congvu	0:24041b847eb5	1396	BYTE a, ord, sum;
congvu	0:24041b847eb5	1397	#endif
congvu	0:24041b847eb5	1398
congvu	0:24041b847eb5	1399	res = dir_sdi(dj, 0); /* Rewind directory object */
congvu	0:24041b847eb5	1400	if (res != FR_OK) return res;
congvu	0:24041b847eb5	1401
congvu	0:24041b847eb5	1402	#if _USE_LFN
congvu	0:24041b847eb5	1403	ord = sum = 0xFF;
congvu	0:24041b847eb5	1404	#endif
congvu	0:24041b847eb5	1405	do {
congvu	0:24041b847eb5	1406	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1407	if (res != FR_OK) break;
congvu	0:24041b847eb5	1408	dir = dj->dir; /* Ptr to the directory entry of current index */
congvu	0:24041b847eb5	1409	c = dir[DIR_Name];
congvu	0:24041b847eb5	1410	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
congvu	0:24041b847eb5	1411	#if _USE_LFN /* LFN configuration */
congvu	0:24041b847eb5	1412	a = dir[DIR_Attr] & AM_MASK;
congvu	0:24041b847eb5	1413	if (c == DDE \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
congvu	0:24041b847eb5	1414	ord = 0xFF;
congvu	0:24041b847eb5	1415	} else {
congvu	0:24041b847eb5	1416	if (a == AM_LFN) { /* An LFN entry is found */
congvu	0:24041b847eb5	1417	if (dj->lfn) {
congvu	0:24041b847eb5	1418	if (c & LLE) { /* Is it start of LFN sequence? */
congvu	0:24041b847eb5	1419	sum = dir[LDIR_Chksum];
congvu	0:24041b847eb5	1420	c &= ~LLE; ord = c; /* LFN start order */
congvu	0:24041b847eb5	1421	dj->lfn_idx = dj->index;
congvu	0:24041b847eb5	1422	}
congvu	0:24041b847eb5	1423	/* Check validity of the LFN entry and compare it with given name */
congvu	0:24041b847eb5	1424	ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
congvu	0:24041b847eb5	1425	}
congvu	0:24041b847eb5	1426	} else { /* An SFN entry is found */
congvu	0:24041b847eb5	1427	if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
congvu	0:24041b847eb5	1428	ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
congvu	0:24041b847eb5	1429	if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
congvu	0:24041b847eb5	1430	}
congvu	0:24041b847eb5	1431	}
congvu	0:24041b847eb5	1432	#else /* Non LFN configuration */
congvu	0:24041b847eb5	1433	if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
congvu	0:24041b847eb5	1434	break;
congvu	0:24041b847eb5	1435	#endif
congvu	0:24041b847eb5	1436	res = dir_next(dj, 0); /* Next entry */
congvu	0:24041b847eb5	1437	} while (res == FR_OK);
congvu	0:24041b847eb5	1438
congvu	0:24041b847eb5	1439	return res;
congvu	0:24041b847eb5	1440	}
congvu	0:24041b847eb5	1441
congvu	0:24041b847eb5	1442
congvu	0:24041b847eb5	1443
congvu	0:24041b847eb5	1444
congvu	0:24041b847eb5	1445	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1446	/* Read an object from the directory */
congvu	0:24041b847eb5	1447	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1448	#if _FS_MINIMIZE <= 1
congvu	0:24041b847eb5	1449	static
congvu	0:24041b847eb5	1450	FRESULT dir_read (
congvu	0:24041b847eb5	1451	FATFS_DIR dj / Pointer to the directory object that pointing the entry to be read */
congvu	0:24041b847eb5	1452	)
congvu	0:24041b847eb5	1453	{
congvu	0:24041b847eb5	1454	FRESULT res;
congvu	0:24041b847eb5	1455	BYTE c, *dir;
congvu	0:24041b847eb5	1456	#if _USE_LFN
congvu	0:24041b847eb5	1457	BYTE a, ord = 0xFF, sum = 0xFF;
congvu	0:24041b847eb5	1458	#endif
congvu	0:24041b847eb5	1459
congvu	0:24041b847eb5	1460	res = FR_NO_FILE;
congvu	0:24041b847eb5	1461	while (dj->sect) {
congvu	0:24041b847eb5	1462	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1463	if (res != FR_OK) break;
congvu	0:24041b847eb5	1464	dir = dj->dir; /* Ptr to the directory entry of current index */
congvu	0:24041b847eb5	1465	c = dir[DIR_Name];
congvu	0:24041b847eb5	1466	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
congvu	0:24041b847eb5	1467	#if _USE_LFN /* LFN configuration */
congvu	0:24041b847eb5	1468	a = dir[DIR_Attr] & AM_MASK;
congvu	0:24041b847eb5	1469	if (c == DDE \|\| (!_FS_RPATH && c == '.') \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
congvu	0:24041b847eb5	1470	ord = 0xFF;
congvu	0:24041b847eb5	1471	} else {
congvu	0:24041b847eb5	1472	if (a == AM_LFN) { /* An LFN entry is found */
congvu	0:24041b847eb5	1473	if (c & LLE) { /* Is it start of LFN sequence? */
congvu	0:24041b847eb5	1474	sum = dir[LDIR_Chksum];
congvu	0:24041b847eb5	1475	c &= ~LLE; ord = c;
congvu	0:24041b847eb5	1476	dj->lfn_idx = dj->index;
congvu	0:24041b847eb5	1477	}
congvu	0:24041b847eb5	1478	/* Check LFN validity and capture it */
congvu	0:24041b847eb5	1479	ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
congvu	0:24041b847eb5	1480	} else { /* An SFN entry is found */
congvu	0:24041b847eb5	1481	if (ord \|\| sum != sum_sfn(dir)) /* Is there a valid LFN? */
congvu	0:24041b847eb5	1482	dj->lfn_idx = 0xFFFF; /* It has no LFN. */
congvu	0:24041b847eb5	1483	break;
congvu	0:24041b847eb5	1484	}
congvu	0:24041b847eb5	1485	}
congvu	0:24041b847eb5	1486	#else /* Non LFN configuration */
congvu	0:24041b847eb5	1487	if (c != DDE && (_FS_RPATH \|\| c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
congvu	0:24041b847eb5	1488	break;
congvu	0:24041b847eb5	1489	#endif
congvu	0:24041b847eb5	1490	res = dir_next(dj, 0); /* Next entry */
congvu	0:24041b847eb5	1491	if (res != FR_OK) break;
congvu	0:24041b847eb5	1492	}
congvu	0:24041b847eb5	1493
congvu	0:24041b847eb5	1494	if (res != FR_OK) dj->sect = 0;
congvu	0:24041b847eb5	1495
congvu	0:24041b847eb5	1496	return res;
congvu	0:24041b847eb5	1497	}
congvu	0:24041b847eb5	1498	#endif
congvu	0:24041b847eb5	1499
congvu	0:24041b847eb5	1500
congvu	0:24041b847eb5	1501
congvu	0:24041b847eb5	1502	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1503	/* Register an object to the directory */
congvu	0:24041b847eb5	1504	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1505	#if !_FS_READONLY
congvu	0:24041b847eb5	1506	static
congvu	0:24041b847eb5	1507	FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
congvu	0:24041b847eb5	1508	FATFS_DIR dj / Target directory with object name to be created */
congvu	0:24041b847eb5	1509	)
congvu	0:24041b847eb5	1510	{
congvu	0:24041b847eb5	1511	FRESULT res;
congvu	0:24041b847eb5	1512	BYTE c, *dir;
congvu	0:24041b847eb5	1513	#if _USE_LFN /* LFN configuration */
congvu	0:24041b847eb5	1514	WORD n, ne, is;
congvu	0:24041b847eb5	1515	BYTE sn[12], *fn, sum;
congvu	0:24041b847eb5	1516	WCHAR *lfn;
congvu	0:24041b847eb5	1517
congvu	0:24041b847eb5	1518
congvu	0:24041b847eb5	1519	fn = dj->fn; lfn = dj->lfn;
congvu	0:24041b847eb5	1520	mem_cpy(sn, fn, 12);
congvu	0:24041b847eb5	1521
congvu	0:24041b847eb5	1522	if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
congvu	0:24041b847eb5	1523	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1524
congvu	0:24041b847eb5	1525	if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
congvu	0:24041b847eb5	1526	fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
congvu	0:24041b847eb5	1527	for (n = 1; n < 100; n++) {
congvu	0:24041b847eb5	1528	gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
congvu	0:24041b847eb5	1529	res = dir_find(dj); /* Check if the name collides with existing SFN */
congvu	0:24041b847eb5	1530	if (res != FR_OK) break;
congvu	0:24041b847eb5	1531	}
congvu	0:24041b847eb5	1532	if (n == 100) return FR_DENIED; /* Abort if too many collisions */
congvu	0:24041b847eb5	1533	if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
congvu	0:24041b847eb5	1534	fn[NS] = sn[NS]; dj->lfn = lfn;
congvu	0:24041b847eb5	1535	}
congvu	0:24041b847eb5	1536
congvu	0:24041b847eb5	1537	if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
congvu	0:24041b847eb5	1538	for (ne = 0; lfn[ne]; ne++) ;
congvu	0:24041b847eb5	1539	ne = (ne + 25) / 13;
congvu	0:24041b847eb5	1540	} else { /* Otherwise reserve only an SFN entry. */
congvu	0:24041b847eb5	1541	ne = 1;
congvu	0:24041b847eb5	1542	}
congvu	0:24041b847eb5	1543
congvu	0:24041b847eb5	1544	/* Reserve contiguous entries */
congvu	0:24041b847eb5	1545	res = dir_sdi(dj, 0);
congvu	0:24041b847eb5	1546	if (res != FR_OK) return res;
congvu	0:24041b847eb5	1547	n = is = 0;
congvu	0:24041b847eb5	1548	do {
congvu	0:24041b847eb5	1549	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1550	if (res != FR_OK) break;
congvu	0:24041b847eb5	1551	c = dj->dir; / Check the entry status */
congvu	0:24041b847eb5	1552	if (c == DDE \|\| c == 0) { /* Is it a blank entry? */
congvu	0:24041b847eb5	1553	if (n == 0) is = dj->index; /* First index of the contiguous entry */
congvu	0:24041b847eb5	1554	if (++n == ne) break; /* A contiguous entry that required count is found */
congvu	0:24041b847eb5	1555	} else {
congvu	0:24041b847eb5	1556	n = 0; /* Not a blank entry. Restart to search */
congvu	0:24041b847eb5	1557	}
congvu	0:24041b847eb5	1558	res = dir_next(dj, 1); /* Next entry with table stretch */
congvu	0:24041b847eb5	1559	} while (res == FR_OK);
congvu	0:24041b847eb5	1560
congvu	0:24041b847eb5	1561	if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
congvu	0:24041b847eb5	1562	res = dir_sdi(dj, is);
congvu	0:24041b847eb5	1563	if (res == FR_OK) {
congvu	0:24041b847eb5	1564	sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
congvu	0:24041b847eb5	1565	ne--;
congvu	0:24041b847eb5	1566	do { /* Store LFN entries in bottom first */
congvu	0:24041b847eb5	1567	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1568	if (res != FR_OK) break;
congvu	0:24041b847eb5	1569	fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
congvu	0:24041b847eb5	1570	dj->fs->wflag = 1;
congvu	0:24041b847eb5	1571	res = dir_next(dj, 0); /* Next entry */
congvu	0:24041b847eb5	1572	} while (res == FR_OK && --ne);
congvu	0:24041b847eb5	1573	}
congvu	0:24041b847eb5	1574	}
congvu	0:24041b847eb5	1575
congvu	0:24041b847eb5	1576	#else /* Non LFN configuration */
congvu	0:24041b847eb5	1577	res = dir_sdi(dj, 0);
congvu	0:24041b847eb5	1578	if (res == FR_OK) {
congvu	0:24041b847eb5	1579	do { /* Find a blank entry for the SFN */
congvu	0:24041b847eb5	1580	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1581	if (res != FR_OK) break;
congvu	0:24041b847eb5	1582	c = *dj->dir;
congvu	0:24041b847eb5	1583	if (c == DDE \|\| c == 0) break; /* Is it a blank entry? */
congvu	0:24041b847eb5	1584	res = dir_next(dj, 1); /* Next entry with table stretch */
congvu	0:24041b847eb5	1585	} while (res == FR_OK);
congvu	0:24041b847eb5	1586	}
congvu	0:24041b847eb5	1587	#endif
congvu	0:24041b847eb5	1588
congvu	0:24041b847eb5	1589	if (res == FR_OK) { /* Initialize the SFN entry */
congvu	0:24041b847eb5	1590	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1591	if (res == FR_OK) {
congvu	0:24041b847eb5	1592	dir = dj->dir;
congvu	0:24041b847eb5	1593	mem_set(dir, 0, SZ_DIR); /* Clean the entry */
congvu	0:24041b847eb5	1594	mem_cpy(dir, dj->fn, 11); /* Put SFN */
congvu	0:24041b847eb5	1595	#if _USE_LFN
congvu	0:24041b847eb5	1596	dir[DIR_NTres] = (dj->fn+NS) & (NS_BODY \| NS_EXT); / Put NT flag */
congvu	0:24041b847eb5	1597	#endif
congvu	0:24041b847eb5	1598	dj->fs->wflag = 1;
congvu	0:24041b847eb5	1599	}
congvu	0:24041b847eb5	1600	}
congvu	0:24041b847eb5	1601
congvu	0:24041b847eb5	1602	return res;
congvu	0:24041b847eb5	1603	}
congvu	0:24041b847eb5	1604	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	1605
congvu	0:24041b847eb5	1606
congvu	0:24041b847eb5	1607
congvu	0:24041b847eb5	1608
congvu	0:24041b847eb5	1609	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1610	/* Remove an object from the directory */
congvu	0:24041b847eb5	1611	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1612	#if !_FS_READONLY && !_FS_MINIMIZE
congvu	0:24041b847eb5	1613	static
congvu	0:24041b847eb5	1614	FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
congvu	0:24041b847eb5	1615	FATFS_DIR dj / Directory object pointing the entry to be removed */
congvu	0:24041b847eb5	1616	)
congvu	0:24041b847eb5	1617	{
congvu	0:24041b847eb5	1618	FRESULT res;
congvu	0:24041b847eb5	1619	#if _USE_LFN /* LFN configuration */
congvu	0:24041b847eb5	1620	WORD i;
congvu	0:24041b847eb5	1621
congvu	0:24041b847eb5	1622	i = dj->index; /* SFN index */
congvu	0:24041b847eb5	1623	res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
congvu	0:24041b847eb5	1624	if (res == FR_OK) {
congvu	0:24041b847eb5	1625	do {
congvu	0:24041b847eb5	1626	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1627	if (res != FR_OK) break;
congvu	0:24041b847eb5	1628	dj->dir = DDE; / Mark the entry "deleted" */
congvu	0:24041b847eb5	1629	dj->fs->wflag = 1;
congvu	0:24041b847eb5	1630	if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
congvu	0:24041b847eb5	1631	res = dir_next(dj, 0); /* Next entry */
congvu	0:24041b847eb5	1632	} while (res == FR_OK);
congvu	0:24041b847eb5	1633	if (res == FR_NO_FILE) res = FR_INT_ERR;
congvu	0:24041b847eb5	1634	}
congvu	0:24041b847eb5	1635
congvu	0:24041b847eb5	1636	#else /* Non LFN configuration */
congvu	0:24041b847eb5	1637	res = dir_sdi(dj, dj->index);
congvu	0:24041b847eb5	1638	if (res == FR_OK) {
congvu	0:24041b847eb5	1639	res = move_window(dj->fs, dj->sect);
congvu	0:24041b847eb5	1640	if (res == FR_OK) {
congvu	0:24041b847eb5	1641	dj->dir = DDE; / Mark the entry "deleted" */
congvu	0:24041b847eb5	1642	dj->fs->wflag = 1;
congvu	0:24041b847eb5	1643	}
congvu	0:24041b847eb5	1644	}
congvu	0:24041b847eb5	1645	#endif
congvu	0:24041b847eb5	1646
congvu	0:24041b847eb5	1647	return res;
congvu	0:24041b847eb5	1648	}
congvu	0:24041b847eb5	1649	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	1650
congvu	0:24041b847eb5	1651
congvu	0:24041b847eb5	1652
congvu	0:24041b847eb5	1653
congvu	0:24041b847eb5	1654	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1655	/* Pick a segment and create the object name in directory form */
congvu	0:24041b847eb5	1656	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1657
congvu	0:24041b847eb5	1658	static
congvu	0:24041b847eb5	1659	FRESULT create_name (
congvu	0:24041b847eb5	1660	FATFS_DIR dj, / Pointer to the directory object */
congvu	0:24041b847eb5	1661	const TCHAR *path / Pointer to pointer to the segment in the path string */
congvu	0:24041b847eb5	1662	)
congvu	0:24041b847eb5	1663	{
congvu	0:24041b847eb5	1664	#ifdef _EXCVT
congvu	0:24041b847eb5	1665	static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
congvu	0:24041b847eb5	1666	#endif
congvu	0:24041b847eb5	1667
congvu	0:24041b847eb5	1668	#if _USE_LFN /* LFN configuration */
congvu	0:24041b847eb5	1669	BYTE b, cf;
congvu	0:24041b847eb5	1670	WCHAR w, *lfn;
congvu	0:24041b847eb5	1671	UINT i, ni, si, di;
congvu	0:24041b847eb5	1672	const TCHAR *p;
congvu	0:24041b847eb5	1673
congvu	0:24041b847eb5	1674	/* Create LFN in Unicode */
congvu	0:24041b847eb5	1675	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
congvu	0:24041b847eb5	1676	lfn = dj->lfn;
congvu	0:24041b847eb5	1677	si = di = 0;
congvu	0:24041b847eb5	1678	for (;;) {
congvu	0:24041b847eb5	1679	w = p[si++]; /* Get a character */
congvu	0:24041b847eb5	1680	if (w < ' ' \|\| w == '/' \|\| w == '\\') break; /* Break on end of segment */
congvu	0:24041b847eb5	1681	if (di >= _MAX_LFN) /* Reject too long name */
congvu	0:24041b847eb5	1682	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1683	#if !_LFN_UNICODE
congvu	0:24041b847eb5	1684	w &= 0xFF;
congvu	0:24041b847eb5	1685	if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
congvu	0:24041b847eb5	1686	b = (BYTE)p[si++]; /* Get 2nd byte */
congvu	0:24041b847eb5	1687	if (!IsDBCS2(b))
congvu	0:24041b847eb5	1688	return FR_INVALID_NAME; /* Reject invalid sequence */
congvu	0:24041b847eb5	1689	w = (w << 8) + b; /* Create a DBC */
congvu	0:24041b847eb5	1690	}
congvu	0:24041b847eb5	1691	w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
congvu	0:24041b847eb5	1692	if (!w) return FR_INVALID_NAME; /* Reject invalid code */
congvu	0:24041b847eb5	1693	#endif
congvu	0:24041b847eb5	1694	if (w < 0x80 && chk_chr("\":<>\?\|\x7F", w)) / Reject illegal chars for LFN */
congvu	0:24041b847eb5	1695	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1696	lfn[di++] = w; /* Store the Unicode char */
congvu	0:24041b847eb5	1697	}
congvu	0:24041b847eb5	1698	path = &p[si]; / Return pointer to the next segment */
congvu	0:24041b847eb5	1699	cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
congvu	0:24041b847eb5	1700	#if _FS_RPATH
congvu	0:24041b847eb5	1701	if ((di == 1 && lfn[di-1] == '.') \|\| /* Is this a dot entry? */
congvu	0:24041b847eb5	1702	(di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
congvu	0:24041b847eb5	1703	lfn[di] = 0;
congvu	0:24041b847eb5	1704	for (i = 0; i < 11; i++)
congvu	0:24041b847eb5	1705	dj->fn[i] = (i < di) ? '.' : ' ';
congvu	0:24041b847eb5	1706	dj->fn[i] = cf \| NS_DOT; /* This is a dot entry */
congvu	0:24041b847eb5	1707	return FR_OK;
congvu	0:24041b847eb5	1708	}
congvu	0:24041b847eb5	1709	#endif
congvu	0:24041b847eb5	1710	while (di) { /* Strip trailing spaces and dots */
congvu	0:24041b847eb5	1711	w = lfn[di-1];
congvu	0:24041b847eb5	1712	if (w != ' ' && w != '.') break;
congvu	0:24041b847eb5	1713	di--;
congvu	0:24041b847eb5	1714	}
congvu	0:24041b847eb5	1715	if (!di) return FR_INVALID_NAME; /* Reject nul string */
congvu	0:24041b847eb5	1716
congvu	0:24041b847eb5	1717	lfn[di] = 0; /* LFN is created */
congvu	0:24041b847eb5	1718
congvu	0:24041b847eb5	1719	/* Create SFN in directory form */
congvu	0:24041b847eb5	1720	mem_set(dj->fn, ' ', 11);
congvu	0:24041b847eb5	1721	for (si = 0; lfn[si] == ' ' \|\| lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
congvu	0:24041b847eb5	1722	if (si) cf \|= NS_LOSS \| NS_LFN;
congvu	0:24041b847eb5	1723	while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
congvu	0:24041b847eb5	1724
congvu	0:24041b847eb5	1725	b = i = 0; ni = 8;
congvu	0:24041b847eb5	1726	for (;;) {
congvu	0:24041b847eb5	1727	w = lfn[si++]; /* Get an LFN char */
congvu	0:24041b847eb5	1728	if (!w) break; /* Break on end of the LFN */
congvu	0:24041b847eb5	1729	if (w == ' ' \|\| (w == '.' && si != di)) { /* Remove spaces and dots */
congvu	0:24041b847eb5	1730	cf \|= NS_LOSS \| NS_LFN; continue;
congvu	0:24041b847eb5	1731	}
congvu	0:24041b847eb5	1732
congvu	0:24041b847eb5	1733	if (i >= ni \|\| si == di) { /* Extension or end of SFN */
congvu	0:24041b847eb5	1734	if (ni == 11) { /* Long extension */
congvu	0:24041b847eb5	1735	cf \|= NS_LOSS \| NS_LFN; break;
congvu	0:24041b847eb5	1736	}
congvu	0:24041b847eb5	1737	if (si != di) cf \|= NS_LOSS \| NS_LFN; /* Out of 8.3 format */
congvu	0:24041b847eb5	1738	if (si > di) break; /* No extension */
congvu	0:24041b847eb5	1739	si = di; i = 8; ni = 11; /* Enter extension section */
congvu	0:24041b847eb5	1740	b <<= 2; continue;
congvu	0:24041b847eb5	1741	}
congvu	0:24041b847eb5	1742
congvu	0:24041b847eb5	1743	if (w >= 0x80) { /* Non ASCII char */
congvu	0:24041b847eb5	1744	#ifdef _EXCVT
congvu	0:24041b847eb5	1745	w = ff_convert(w, 0); /* Unicode -> OEM code */
congvu	0:24041b847eb5	1746	if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
congvu	0:24041b847eb5	1747	#else
congvu	0:24041b847eb5	1748	w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
congvu	0:24041b847eb5	1749	#endif
congvu	0:24041b847eb5	1750	cf \|= NS_LFN; /* Force create LFN entry */
congvu	0:24041b847eb5	1751	}
congvu	0:24041b847eb5	1752
congvu	0:24041b847eb5	1753	if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
congvu	0:24041b847eb5	1754	if (i >= ni - 1) {
congvu	0:24041b847eb5	1755	cf \|= NS_LOSS \| NS_LFN; i = ni; continue;
congvu	0:24041b847eb5	1756	}
congvu	0:24041b847eb5	1757	dj->fn[i++] = (BYTE)(w >> 8);
congvu	0:24041b847eb5	1758	} else { /* Single byte char */
congvu	0:24041b847eb5	1759	if (!w \|\| chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
congvu	0:24041b847eb5	1760	w = '_'; cf \|= NS_LOSS \| NS_LFN;/* Lossy conversion */
congvu	0:24041b847eb5	1761	} else {
congvu	0:24041b847eb5	1762	if (IsUpper(w)) { /* ASCII large capital */
congvu	0:24041b847eb5	1763	b \|= 2;
congvu	0:24041b847eb5	1764	} else {
congvu	0:24041b847eb5	1765	if (IsLower(w)) { /* ASCII small capital */
congvu	0:24041b847eb5	1766	b \|= 1; w -= 0x20;
congvu	0:24041b847eb5	1767	}
congvu	0:24041b847eb5	1768	}
congvu	0:24041b847eb5	1769	}
congvu	0:24041b847eb5	1770	}
congvu	0:24041b847eb5	1771	dj->fn[i++] = (BYTE)w;
congvu	0:24041b847eb5	1772	}
congvu	0:24041b847eb5	1773
congvu	0:24041b847eb5	1774	if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
congvu	0:24041b847eb5	1775
congvu	0:24041b847eb5	1776	if (ni == 8) b <<= 2;
congvu	0:24041b847eb5	1777	if ((b & 0x0C) == 0x0C \|\| (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
congvu	0:24041b847eb5	1778	cf \|= NS_LFN;
congvu	0:24041b847eb5	1779	if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
congvu	0:24041b847eb5	1780	if ((b & 0x03) == 0x01) cf \|= NS_EXT; /* NT flag (Extension has only small capital) */
congvu	0:24041b847eb5	1781	if ((b & 0x0C) == 0x04) cf \|= NS_BODY; /* NT flag (Filename has only small capital) */
congvu	0:24041b847eb5	1782	}
congvu	0:24041b847eb5	1783
congvu	0:24041b847eb5	1784	dj->fn[NS] = cf; /* SFN is created */
congvu	0:24041b847eb5	1785
congvu	0:24041b847eb5	1786	return FR_OK;
congvu	0:24041b847eb5	1787
congvu	0:24041b847eb5	1788
congvu	0:24041b847eb5	1789	#else /* Non-LFN configuration */
congvu	0:24041b847eb5	1790	BYTE b, c, d, *sfn;
congvu	0:24041b847eb5	1791	UINT ni, si, i;
congvu	0:24041b847eb5	1792	const char *p;
congvu	0:24041b847eb5	1793
congvu	0:24041b847eb5	1794	/* Create file name in directory form */
congvu	0:24041b847eb5	1795	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
congvu	0:24041b847eb5	1796	sfn = dj->fn;
congvu	0:24041b847eb5	1797	mem_set(sfn, ' ', 11);
congvu	0:24041b847eb5	1798	si = i = b = 0; ni = 8;
congvu	0:24041b847eb5	1799	#if _FS_RPATH
congvu	0:24041b847eb5	1800	if (p[si] == '.') { /* Is this a dot entry? */
congvu	0:24041b847eb5	1801	for (;;) {
congvu	0:24041b847eb5	1802	c = (BYTE)p[si++];
congvu	0:24041b847eb5	1803	if (c != '.' \|\| si >= 3) break;
congvu	0:24041b847eb5	1804	sfn[i++] = c;
congvu	0:24041b847eb5	1805	}
congvu	0:24041b847eb5	1806	if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
congvu	0:24041b847eb5	1807	path = &p[si]; / Return pointer to the next segment */
congvu	0:24041b847eb5	1808	sfn[NS] = (c <= ' ') ? NS_LAST \| NS_DOT : NS_DOT; /* Set last segment flag if end of path */
congvu	0:24041b847eb5	1809	return FR_OK;
congvu	0:24041b847eb5	1810	}
congvu	0:24041b847eb5	1811	#endif
congvu	0:24041b847eb5	1812	for (;;) {
congvu	0:24041b847eb5	1813	c = (BYTE)p[si++];
congvu	0:24041b847eb5	1814	if (c <= ' ' \|\| c == '/' \|\| c == '\\') break; /* Break on end of segment */
congvu	0:24041b847eb5	1815	if (c == '.' \|\| i >= ni) {
congvu	0:24041b847eb5	1816	if (ni != 8 \|\| c != '.') return FR_INVALID_NAME;
congvu	0:24041b847eb5	1817	i = 8; ni = 11;
congvu	0:24041b847eb5	1818	b <<= 2; continue;
congvu	0:24041b847eb5	1819	}
congvu	0:24041b847eb5	1820	if (c >= 0x80) { /* Extended char? */
congvu	0:24041b847eb5	1821	b \|= 3; /* Eliminate NT flag */
congvu	0:24041b847eb5	1822	#ifdef _EXCVT
congvu	0:24041b847eb5	1823	c = excvt[c - 0x80]; /* Upper conversion (SBCS) */
congvu	0:24041b847eb5	1824	#else
congvu	0:24041b847eb5	1825	#if !_DF1S /* ASCII only cfg */
congvu	0:24041b847eb5	1826	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1827	#endif
congvu	0:24041b847eb5	1828	#endif
congvu	0:24041b847eb5	1829	}
congvu	0:24041b847eb5	1830	if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
congvu	0:24041b847eb5	1831	d = (BYTE)p[si++]; /* Get 2nd byte */
congvu	0:24041b847eb5	1832	if (!IsDBCS2(d) \|\| i >= ni - 1) /* Reject invalid DBC */
congvu	0:24041b847eb5	1833	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1834	sfn[i++] = c;
congvu	0:24041b847eb5	1835	sfn[i++] = d;
congvu	0:24041b847eb5	1836	} else { /* Single byte code */
congvu	0:24041b847eb5	1837	if (chk_chr("\"+,:;<=>\?[]\|\x7F", c)) / Reject illegal chrs for SFN */
congvu	0:24041b847eb5	1838	return FR_INVALID_NAME;
congvu	0:24041b847eb5	1839	if (IsUpper(c)) { /* ASCII large capital? */
congvu	0:24041b847eb5	1840	b \|= 2;
congvu	0:24041b847eb5	1841	} else {
congvu	0:24041b847eb5	1842	if (IsLower(c)) { /* ASCII small capital? */
congvu	0:24041b847eb5	1843	b \|= 1; c -= 0x20;
congvu	0:24041b847eb5	1844	}
congvu	0:24041b847eb5	1845	}
congvu	0:24041b847eb5	1846	sfn[i++] = c;
congvu	0:24041b847eb5	1847	}
congvu	0:24041b847eb5	1848	}
congvu	0:24041b847eb5	1849	path = &p[si]; / Return pointer to the next segment */
congvu	0:24041b847eb5	1850	c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
congvu	0:24041b847eb5	1851
congvu	0:24041b847eb5	1852	if (!i) return FR_INVALID_NAME; /* Reject nul string */
congvu	0:24041b847eb5	1853	if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
congvu	0:24041b847eb5	1854
congvu	0:24041b847eb5	1855	if (ni == 8) b <<= 2;
congvu	0:24041b847eb5	1856	if ((b & 0x03) == 0x01) c \|= NS_EXT; /* NT flag (Name extension has only small capital) */
congvu	0:24041b847eb5	1857	if ((b & 0x0C) == 0x04) c \|= NS_BODY; /* NT flag (Name body has only small capital) */
congvu	0:24041b847eb5	1858
congvu	0:24041b847eb5	1859	sfn[NS] = c; /* Store NT flag, File name is created */
congvu	0:24041b847eb5	1860
congvu	0:24041b847eb5	1861	return FR_OK;
congvu	0:24041b847eb5	1862	#endif
congvu	0:24041b847eb5	1863	}
congvu	0:24041b847eb5	1864
congvu	0:24041b847eb5	1865
congvu	0:24041b847eb5	1866
congvu	0:24041b847eb5	1867
congvu	0:24041b847eb5	1868	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1869	/* Get file information from directory entry */
congvu	0:24041b847eb5	1870	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1871	#if _FS_MINIMIZE <= 1
congvu	0:24041b847eb5	1872	static
congvu	0:24041b847eb5	1873	void get_fileinfo ( /* No return code */
congvu	0:24041b847eb5	1874	FATFS_DIR dj, / Pointer to the directory object */
congvu	0:24041b847eb5	1875	FILINFO fno / Pointer to the file information to be filled */
congvu	0:24041b847eb5	1876	)
congvu	0:24041b847eb5	1877	{
congvu	0:24041b847eb5	1878	UINT i;
congvu	0:24041b847eb5	1879	BYTE nt, *dir;
congvu	0:24041b847eb5	1880	TCHAR *p, c;
congvu	0:24041b847eb5	1881
congvu	0:24041b847eb5	1882
congvu	0:24041b847eb5	1883	p = fno->fname;
congvu	0:24041b847eb5	1884	if (dj->sect) {
congvu	0:24041b847eb5	1885	dir = dj->dir;
congvu	0:24041b847eb5	1886	nt = dir[DIR_NTres]; /* NT flag */
congvu	0:24041b847eb5	1887	for (i = 0; i < 8; i++) { /* Copy name body */
congvu	0:24041b847eb5	1888	c = dir[i];
congvu	0:24041b847eb5	1889	if (c == ' ') break;
congvu	0:24041b847eb5	1890	if (c == NDDE) c = (TCHAR)DDE;
congvu	0:24041b847eb5	1891	if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
congvu	0:24041b847eb5	1892	#if _LFN_UNICODE
congvu	0:24041b847eb5	1893	if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
congvu	0:24041b847eb5	1894	c = (c << 8) \| dir[++i];
congvu	0:24041b847eb5	1895	c = ff_convert(c, 1);
congvu	0:24041b847eb5	1896	if (!c) c = '?';
congvu	0:24041b847eb5	1897	#endif
congvu	0:24041b847eb5	1898	*p++ = c;
congvu	0:24041b847eb5	1899	}
congvu	0:24041b847eb5	1900	if (dir[8] != ' ') { /* Copy name extension */
congvu	0:24041b847eb5	1901	*p++ = '.';
congvu	0:24041b847eb5	1902	for (i = 8; i < 11; i++) {
congvu	0:24041b847eb5	1903	c = dir[i];
congvu	0:24041b847eb5	1904	if (c == ' ') break;
congvu	0:24041b847eb5	1905	if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
congvu	0:24041b847eb5	1906	#if _LFN_UNICODE
congvu	0:24041b847eb5	1907	if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
congvu	0:24041b847eb5	1908	c = (c << 8) \| dir[++i];
congvu	0:24041b847eb5	1909	c = ff_convert(c, 1);
congvu	0:24041b847eb5	1910	if (!c) c = '?';
congvu	0:24041b847eb5	1911	#endif
congvu	0:24041b847eb5	1912	*p++ = c;
congvu	0:24041b847eb5	1913	}
congvu	0:24041b847eb5	1914	}
congvu	0:24041b847eb5	1915	fno->fattrib = dir[DIR_Attr]; /* Attribute */
congvu	0:24041b847eb5	1916	fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
congvu	0:24041b847eb5	1917	fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
congvu	0:24041b847eb5	1918	fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
congvu	0:24041b847eb5	1919	}
congvu	0:24041b847eb5	1920	p = 0; / Terminate SFN str by a \0 */
congvu	0:24041b847eb5	1921
congvu	0:24041b847eb5	1922	#if _USE_LFN
congvu	0:24041b847eb5	1923	if (fno->lfname && fno->lfsize) {
congvu	0:24041b847eb5	1924	TCHAR *tp = fno->lfname;
congvu	0:24041b847eb5	1925	WCHAR w, *lfn;
congvu	0:24041b847eb5	1926
congvu	0:24041b847eb5	1927	i = 0;
congvu	0:24041b847eb5	1928	if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
congvu	0:24041b847eb5	1929	lfn = dj->lfn;
congvu	0:24041b847eb5	1930	while ((w = lfn++) != 0) { / Get an LFN char */
congvu	0:24041b847eb5	1931	#if !_LFN_UNICODE
congvu	0:24041b847eb5	1932	w = ff_convert(w, 0); /* Unicode -> OEM conversion */
congvu	0:24041b847eb5	1933	if (!w) { i = 0; break; } /* Could not convert, no LFN */
congvu	0:24041b847eb5	1934	if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
congvu	0:24041b847eb5	1935	tp[i++] = (TCHAR)(w >> 8);
congvu	0:24041b847eb5	1936	#endif
congvu	0:24041b847eb5	1937	if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
congvu	0:24041b847eb5	1938	tp[i++] = (TCHAR)w;
congvu	0:24041b847eb5	1939	}
congvu	0:24041b847eb5	1940	}
congvu	0:24041b847eb5	1941	tp[i] = 0; /* Terminate the LFN str by a \0 */
congvu	0:24041b847eb5	1942	}
congvu	0:24041b847eb5	1943	#endif
congvu	0:24041b847eb5	1944	}
congvu	0:24041b847eb5	1945	#endif /* _FS_MINIMIZE <= 1 */
congvu	0:24041b847eb5	1946
congvu	0:24041b847eb5	1947
congvu	0:24041b847eb5	1948
congvu	0:24041b847eb5	1949
congvu	0:24041b847eb5	1950	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1951	/* Follow a file path */
congvu	0:24041b847eb5	1952	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	1953
congvu	0:24041b847eb5	1954	static
congvu	0:24041b847eb5	1955	FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
congvu	0:24041b847eb5	1956	FATFS_DIR dj, / Directory object to return last directory and found object */
congvu	0:24041b847eb5	1957	const TCHAR path / Full-path string to find a file or directory */
congvu	0:24041b847eb5	1958	)
congvu	0:24041b847eb5	1959	{
congvu	0:24041b847eb5	1960	FRESULT res;
congvu	0:24041b847eb5	1961	BYTE *dir, ns;
congvu	0:24041b847eb5	1962
congvu	0:24041b847eb5	1963
congvu	0:24041b847eb5	1964	#if _FS_RPATH
congvu	0:24041b847eb5	1965	if (path == '/' \|\| path == '\\') { /* There is a heading separator */
congvu	0:24041b847eb5	1966	path++; dj->sclust = 0; /* Strip it and start from the root dir */
congvu	0:24041b847eb5	1967	} else { /* No heading separator */
congvu	0:24041b847eb5	1968	dj->sclust = dj->fs->cdir; /* Start from the current dir */
congvu	0:24041b847eb5	1969	}
congvu	0:24041b847eb5	1970	#else
congvu	0:24041b847eb5	1971	if (path == '/' \|\| path == '\\') /* Strip heading separator if exist */
congvu	0:24041b847eb5	1972	path++;
congvu	0:24041b847eb5	1973	dj->sclust = 0; /* Start from the root dir */
congvu	0:24041b847eb5	1974	#endif
congvu	0:24041b847eb5	1975
congvu	0:24041b847eb5	1976	if ((UINT)path < ' ') { / Nul path means the start directory itself */
congvu	0:24041b847eb5	1977	res = dir_sdi(dj, 0);
congvu	0:24041b847eb5	1978	dj->dir = 0;
congvu	0:24041b847eb5	1979	} else { /* Follow path */
congvu	0:24041b847eb5	1980	for (;;) {
congvu	0:24041b847eb5	1981	res = create_name(dj, &path); /* Get a segment */
congvu	0:24041b847eb5	1982	if (res != FR_OK) break;
congvu	0:24041b847eb5	1983	res = dir_find(dj); /* Find it */
congvu	0:24041b847eb5	1984	ns = *(dj->fn+NS);
congvu	0:24041b847eb5	1985	if (res != FR_OK) { /* Failed to find the object */
congvu	0:24041b847eb5	1986	if (res != FR_NO_FILE) break; /* Abort if any hard error occurred */
congvu	0:24041b847eb5	1987	/* Object not found */
congvu	0:24041b847eb5	1988	if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
congvu	0:24041b847eb5	1989	dj->sclust = 0; dj->dir = 0; /* It is the root dir */
congvu	0:24041b847eb5	1990	res = FR_OK;
congvu	0:24041b847eb5	1991	if (!(ns & NS_LAST)) continue;
congvu	0:24041b847eb5	1992	} else { /* Could not find the object */
congvu	0:24041b847eb5	1993	if (!(ns & NS_LAST)) res = FR_NO_PATH;
congvu	0:24041b847eb5	1994	}
congvu	0:24041b847eb5	1995	break;
congvu	0:24041b847eb5	1996	}
congvu	0:24041b847eb5	1997	if (ns & NS_LAST) break; /* Last segment match. Function completed. */
congvu	0:24041b847eb5	1998	dir = dj->dir; /* There is next segment. Follow the sub directory */
congvu	0:24041b847eb5	1999	if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
congvu	0:24041b847eb5	2000	res = FR_NO_PATH; break;
congvu	0:24041b847eb5	2001	}
congvu	0:24041b847eb5	2002	dj->sclust = ld_clust(dj->fs, dir);
congvu	0:24041b847eb5	2003	}
congvu	0:24041b847eb5	2004	}
congvu	0:24041b847eb5	2005
congvu	0:24041b847eb5	2006	return res;
congvu	0:24041b847eb5	2007	}
congvu	0:24041b847eb5	2008
congvu	0:24041b847eb5	2009
congvu	0:24041b847eb5	2010
congvu	0:24041b847eb5	2011
congvu	0:24041b847eb5	2012	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2013	/* Load a sector and check if it is an FAT Volume Boot Record */
congvu	0:24041b847eb5	2014	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2015
congvu	0:24041b847eb5	2016	static
congvu	0:24041b847eb5	2017	BYTE check_fs ( /* 0:FAT-VBR, 1:Any BR but not FAT, 2:Not a BR, 3:Disk error */
congvu	0:24041b847eb5	2018	FATFS fs, / File system object */
congvu	0:24041b847eb5	2019	DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
congvu	0:24041b847eb5	2020	)
congvu	0:24041b847eb5	2021	{
congvu	0:24041b847eb5	2022	if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
congvu	0:24041b847eb5	2023	return 3;
congvu	0:24041b847eb5	2024	if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
congvu	0:24041b847eb5	2025	return 2;
congvu	0:24041b847eb5	2026
congvu	0:24041b847eb5	2027	if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
congvu	0:24041b847eb5	2028	return 0;
congvu	0:24041b847eb5	2029	if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
congvu	0:24041b847eb5	2030	return 0;
congvu	0:24041b847eb5	2031
congvu	0:24041b847eb5	2032	return 1;
congvu	0:24041b847eb5	2033	}
congvu	0:24041b847eb5	2034
congvu	0:24041b847eb5	2035
congvu	0:24041b847eb5	2036
congvu	0:24041b847eb5	2037
congvu	0:24041b847eb5	2038	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2039	/* Check if the file system object is valid or not */
congvu	0:24041b847eb5	2040	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2041
congvu	0:24041b847eb5	2042	static
congvu	0:24041b847eb5	2043	FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
congvu	0:24041b847eb5	2044	const TCHAR *path, / Pointer to pointer to the path name (drive number) */
congvu	0:24041b847eb5	2045	FATFS *rfs, / Pointer to pointer to the found file system object */
congvu	0:24041b847eb5	2046	BYTE wmode /* !=0: Check write protection for write access */
congvu	0:24041b847eb5	2047	)
congvu	0:24041b847eb5	2048	{
congvu	0:24041b847eb5	2049	BYTE fmt, b, pi, *tbl;
congvu	0:24041b847eb5	2050	UINT vol;
congvu	0:24041b847eb5	2051	DSTATUS stat;
congvu	0:24041b847eb5	2052	DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
congvu	0:24041b847eb5	2053	WORD nrsv;
congvu	0:24041b847eb5	2054	const TCHAR p = path;
congvu	0:24041b847eb5	2055	FATFS *fs;
congvu	0:24041b847eb5	2056
congvu	0:24041b847eb5	2057
congvu	0:24041b847eb5	2058	/* Get logical drive number from the path name */
congvu	0:24041b847eb5	2059	vol = p[0] - '0'; /* Is there a drive number? */
congvu	0:24041b847eb5	2060	if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
congvu	0:24041b847eb5	2061	p += 2; path = p; / Return pointer to the path name */
congvu	0:24041b847eb5	2062	} else { /* No drive number is given */
congvu	0:24041b847eb5	2063	#if _FS_RPATH
congvu	0:24041b847eb5	2064	vol = CurrVol; /* Use current drive */
congvu	0:24041b847eb5	2065	#else
congvu	0:24041b847eb5	2066	vol = 0; /* Use drive 0 */
congvu	0:24041b847eb5	2067	#endif
congvu	0:24041b847eb5	2068	}
congvu	0:24041b847eb5	2069
congvu	0:24041b847eb5	2070	/* Check if the file system object is valid or not */
congvu	0:24041b847eb5	2071	*rfs = 0;
congvu	0:24041b847eb5	2072	if (vol >= _VOLUMES) /* Is the drive number valid? */
congvu	0:24041b847eb5	2073	return FR_INVALID_DRIVE;
congvu	0:24041b847eb5	2074	fs = FatFs[vol]; /* Get corresponding file system object */
congvu	0:24041b847eb5	2075	if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
congvu	0:24041b847eb5	2076
congvu	0:24041b847eb5	2077	ENTER_FF(fs); /* Lock file system */
congvu	0:24041b847eb5	2078
congvu	0:24041b847eb5	2079	rfs = fs; / Return pointer to the corresponding file system object */
congvu	0:24041b847eb5	2080	if (fs->fs_type) { /* If the volume has been mounted */
congvu	0:24041b847eb5	2081	stat = disk_status(fs->drv);
congvu	0:24041b847eb5	2082	if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
congvu	0:24041b847eb5	2083	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
congvu	0:24041b847eb5	2084	return FR_WRITE_PROTECTED;
congvu	0:24041b847eb5	2085	return FR_OK; /* The file system object is valid */
congvu	0:24041b847eb5	2086	}
congvu	0:24041b847eb5	2087	}
congvu	0:24041b847eb5	2088
congvu	0:24041b847eb5	2089	/* The file system object is not valid. */
congvu	0:24041b847eb5	2090	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
congvu	0:24041b847eb5	2091
congvu	0:24041b847eb5	2092	fs->fs_type = 0; /* Clear the file system object */
congvu	0:24041b847eb5	2093	fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
congvu	0:24041b847eb5	2094	stat = disk_initialize(fs->drv); /* Initialize the physical drive */
congvu	0:24041b847eb5	2095	if (stat & STA_NOINIT) /* Check if the initialization succeeded */
congvu	0:24041b847eb5	2096	return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
congvu	0:24041b847eb5	2097	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
congvu	0:24041b847eb5	2098	return FR_WRITE_PROTECTED;
congvu	0:24041b847eb5	2099	#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
congvu	0:24041b847eb5	2100	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
congvu	0:24041b847eb5	2101	return FR_DISK_ERR;
congvu	0:24041b847eb5	2102	#endif
congvu	0:24041b847eb5	2103	/* Search FAT partition on the drive. Supports only generic partitions, FDISK and SFD. */
congvu	0:24041b847eb5	2104	fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */
congvu	0:24041b847eb5	2105	if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */
congvu	0:24041b847eb5	2106	if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */
congvu	0:24041b847eb5	2107	/* Check the partition listed in the partition table */
congvu	0:24041b847eb5	2108	pi = LD2PT(vol);
congvu	0:24041b847eb5	2109	if (pi) pi--;
congvu	0:24041b847eb5	2110	tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */
congvu	0:24041b847eb5	2111	if (tbl[4]) { /* Is the partition existing? */
congvu	0:24041b847eb5	2112	bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
congvu	0:24041b847eb5	2113	fmt = check_fs(fs, bsect); /* Check the partition */
congvu	0:24041b847eb5	2114	}
congvu	0:24041b847eb5	2115	}
congvu	0:24041b847eb5	2116	if (fmt == 3) return FR_DISK_ERR;
congvu	0:24041b847eb5	2117	if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
congvu	0:24041b847eb5	2118
congvu	0:24041b847eb5	2119	/* An FAT volume is found. Following code initializes the file system object */
congvu	0:24041b847eb5	2120
congvu	0:24041b847eb5	2121	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
congvu	0:24041b847eb5	2122	return FR_NO_FILESYSTEM;
congvu	0:24041b847eb5	2123
congvu	0:24041b847eb5	2124	fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
congvu	0:24041b847eb5	2125	if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
congvu	0:24041b847eb5	2126	fs->fsize = fasize;
congvu	0:24041b847eb5	2127
congvu	0:24041b847eb5	2128	fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
congvu	0:24041b847eb5	2129	if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
congvu	0:24041b847eb5	2130	fasize = b; / Number of sectors for FAT area */
congvu	0:24041b847eb5	2131
congvu	0:24041b847eb5	2132	fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
congvu	0:24041b847eb5	2133	if (!b \|\| (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
congvu	0:24041b847eb5	2134
congvu	0:24041b847eb5	2135	fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
congvu	0:24041b847eb5	2136	if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
congvu	0:24041b847eb5	2137
congvu	0:24041b847eb5	2138	tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
congvu	0:24041b847eb5	2139	if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
congvu	0:24041b847eb5	2140
congvu	0:24041b847eb5	2141	nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
congvu	0:24041b847eb5	2142	if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
congvu	0:24041b847eb5	2143
congvu	0:24041b847eb5	2144	/* Determine the FAT sub type */
congvu	0:24041b847eb5	2145	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
congvu	0:24041b847eb5	2146	if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
congvu	0:24041b847eb5	2147	nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
congvu	0:24041b847eb5	2148	if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
congvu	0:24041b847eb5	2149	fmt = FS_FAT12;
congvu	0:24041b847eb5	2150	if (nclst >= MIN_FAT16) fmt = FS_FAT16;
congvu	0:24041b847eb5	2151	if (nclst >= MIN_FAT32) fmt = FS_FAT32;
congvu	0:24041b847eb5	2152
congvu	0:24041b847eb5	2153	/* Boundaries and Limits */
congvu	0:24041b847eb5	2154	fs->n_fatent = nclst + 2; /* Number of FAT entries */
congvu	0:24041b847eb5	2155	fs->database = bsect + sysect; /* Data start sector */
congvu	0:24041b847eb5	2156	fs->fatbase = bsect + nrsv; /* FAT start sector */
congvu	0:24041b847eb5	2157	if (fmt == FS_FAT32) {
congvu	0:24041b847eb5	2158	if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
congvu	0:24041b847eb5	2159	fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
congvu	0:24041b847eb5	2160	szbfat = fs->n_fatent * 4; /* (Required FAT size) */
congvu	0:24041b847eb5	2161	} else {
congvu	0:24041b847eb5	2162	if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
congvu	0:24041b847eb5	2163	fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
congvu	0:24041b847eb5	2164	szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
congvu	0:24041b847eb5	2165	fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
congvu	0:24041b847eb5	2166	}
congvu	0:24041b847eb5	2167	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
congvu	0:24041b847eb5	2168	return FR_NO_FILESYSTEM;
congvu	0:24041b847eb5	2169
congvu	0:24041b847eb5	2170	#if !_FS_READONLY
congvu	0:24041b847eb5	2171	/* Initialize cluster allocation information */
congvu	0:24041b847eb5	2172	fs->free_clust = 0xFFFFFFFF;
congvu	0:24041b847eb5	2173	fs->last_clust = 0;
congvu	0:24041b847eb5	2174
congvu	0:24041b847eb5	2175	/* Get fsinfo if available */
congvu	0:24041b847eb5	2176	if (fmt == FS_FAT32) {
congvu	0:24041b847eb5	2177	fs->fsi_flag = 0;
congvu	0:24041b847eb5	2178	fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
congvu	0:24041b847eb5	2179	if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
congvu	0:24041b847eb5	2180	LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
congvu	0:24041b847eb5	2181	LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
congvu	0:24041b847eb5	2182	LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
congvu	0:24041b847eb5	2183	fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
congvu	0:24041b847eb5	2184	fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
congvu	0:24041b847eb5	2185	}
congvu	0:24041b847eb5	2186	}
congvu	0:24041b847eb5	2187	#endif
congvu	0:24041b847eb5	2188	fs->fs_type = fmt; /* FAT sub-type */
congvu	0:24041b847eb5	2189	fs->id = ++Fsid; /* File system mount ID */
congvu	0:24041b847eb5	2190	fs->winsect = 0; /* Invalidate sector cache */
congvu	0:24041b847eb5	2191	fs->wflag = 0;
congvu	0:24041b847eb5	2192	#if _FS_RPATH
congvu	0:24041b847eb5	2193	fs->cdir = 0; /* Current directory (root dir) */
congvu	0:24041b847eb5	2194	#endif
congvu	0:24041b847eb5	2195	#if _FS_LOCK /* Clear file lock semaphores */
congvu	0:24041b847eb5	2196	clear_lock(fs);
congvu	0:24041b847eb5	2197	#endif
congvu	0:24041b847eb5	2198
congvu	0:24041b847eb5	2199	return FR_OK;
congvu	0:24041b847eb5	2200	}
congvu	0:24041b847eb5	2201
congvu	0:24041b847eb5	2202
congvu	0:24041b847eb5	2203
congvu	0:24041b847eb5	2204
congvu	0:24041b847eb5	2205	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2206	/* Check if the file/dir object is valid or not */
congvu	0:24041b847eb5	2207	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2208
congvu	0:24041b847eb5	2209	static
congvu	0:24041b847eb5	2210	FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
congvu	0:24041b847eb5	2211	void* obj /* Pointer to the object FIL/DIR to check validity */
congvu	0:24041b847eb5	2212	)
congvu	0:24041b847eb5	2213	{
congvu	0:24041b847eb5	2214	FIL *fil;
congvu	0:24041b847eb5	2215
congvu	0:24041b847eb5	2216
congvu	0:24041b847eb5	2217	fil = (FIL)obj; / Assuming offset of fs and id in the FIL/DIR is identical */
congvu	0:24041b847eb5	2218	if (!fil->fs \|\| !fil->fs->fs_type \|\| fil->fs->id != fil->id)
congvu	0:24041b847eb5	2219	return FR_INVALID_OBJECT;
congvu	0:24041b847eb5	2220
congvu	0:24041b847eb5	2221	ENTER_FF(fil->fs); /* Lock file system */
congvu	0:24041b847eb5	2222
congvu	0:24041b847eb5	2223	if (disk_status(fil->fs->drv) & STA_NOINIT)
congvu	0:24041b847eb5	2224	return FR_NOT_READY;
congvu	0:24041b847eb5	2225
congvu	0:24041b847eb5	2226	return FR_OK;
congvu	0:24041b847eb5	2227	}
congvu	0:24041b847eb5	2228
congvu	0:24041b847eb5	2229
congvu	0:24041b847eb5	2230
congvu	0:24041b847eb5	2231
congvu	0:24041b847eb5	2232	/*--------------------------------------------------------------------------
congvu	0:24041b847eb5	2233
congvu	0:24041b847eb5	2234	Public Functions
congvu	0:24041b847eb5	2235
congvu	0:24041b847eb5	2236	--------------------------------------------------------------------------*/
congvu	0:24041b847eb5	2237
congvu	0:24041b847eb5	2238
congvu	0:24041b847eb5	2239
congvu	0:24041b847eb5	2240	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2241	/* Mount/Unmount a Logical Drive */
congvu	0:24041b847eb5	2242	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2243
congvu	0:24041b847eb5	2244	FRESULT f_mount (
congvu	0:24041b847eb5	2245	BYTE vol, /* Logical drive number to be mounted/unmounted */
congvu	0:24041b847eb5	2246	FATFS fs / Pointer to new file system object (NULL for unmount)*/
congvu	0:24041b847eb5	2247	)
congvu	0:24041b847eb5	2248	{
congvu	0:24041b847eb5	2249	FATFS *rfs;
congvu	0:24041b847eb5	2250
congvu	0:24041b847eb5	2251
congvu	0:24041b847eb5	2252	if (vol >= _VOLUMES) /* Check if the drive number is valid */
congvu	0:24041b847eb5	2253	return FR_INVALID_DRIVE;
congvu	0:24041b847eb5	2254	rfs = FatFs[vol]; /* Get current fs object */
congvu	0:24041b847eb5	2255
congvu	0:24041b847eb5	2256	if (rfs) {
congvu	0:24041b847eb5	2257	#if _FS_LOCK
congvu	0:24041b847eb5	2258	clear_lock(rfs);
congvu	0:24041b847eb5	2259	#endif
congvu	0:24041b847eb5	2260	#if _FS_REENTRANT /* Discard sync object of the current volume */
congvu	0:24041b847eb5	2261	if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
congvu	0:24041b847eb5	2262	#endif
congvu	0:24041b847eb5	2263	rfs->fs_type = 0; /* Clear old fs object */
congvu	0:24041b847eb5	2264	}
congvu	0:24041b847eb5	2265
congvu	0:24041b847eb5	2266	if (fs) {
congvu	0:24041b847eb5	2267	fs->fs_type = 0; /* Clear new fs object */
congvu	0:24041b847eb5	2268	#if _FS_REENTRANT /* Create sync object for the new volume */
congvu	0:24041b847eb5	2269	if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
congvu	0:24041b847eb5	2270	#endif
congvu	0:24041b847eb5	2271	}
congvu	0:24041b847eb5	2272	FatFs[vol] = fs; /* Register new fs object */
congvu	0:24041b847eb5	2273
congvu	0:24041b847eb5	2274	return FR_OK;
congvu	0:24041b847eb5	2275	}
congvu	0:24041b847eb5	2276
congvu	0:24041b847eb5	2277
congvu	0:24041b847eb5	2278
congvu	0:24041b847eb5	2279
congvu	0:24041b847eb5	2280	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2281	/* Open or Create a File */
congvu	0:24041b847eb5	2282	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2283
congvu	0:24041b847eb5	2284	FRESULT f_open (
congvu	0:24041b847eb5	2285	FIL fp, / Pointer to the blank file object */
congvu	0:24041b847eb5	2286	const TCHAR path, / Pointer to the file name */
congvu	0:24041b847eb5	2287	BYTE mode /* Access mode and file open mode flags */
congvu	0:24041b847eb5	2288	)
congvu	0:24041b847eb5	2289	{
congvu	0:24041b847eb5	2290	FRESULT res;
congvu	0:24041b847eb5	2291	FATFS_DIR dj;
congvu	0:24041b847eb5	2292	BYTE *dir;
congvu	0:24041b847eb5	2293	DEF_NAMEBUF;
congvu	0:24041b847eb5	2294
congvu	0:24041b847eb5	2295
congvu	0:24041b847eb5	2296	if (!fp) return FR_INVALID_OBJECT;
congvu	0:24041b847eb5	2297	fp->fs = 0; /* Clear file object */
congvu	0:24041b847eb5	2298
congvu	0:24041b847eb5	2299	#if !_FS_READONLY
congvu	0:24041b847eb5	2300	mode &= FA_READ \| FA_WRITE \| FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW;
congvu	0:24041b847eb5	2301	res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
congvu	0:24041b847eb5	2302	#else
congvu	0:24041b847eb5	2303	mode &= FA_READ;
congvu	0:24041b847eb5	2304	res = chk_mounted(&path, &dj.fs, 0);
congvu	0:24041b847eb5	2305	#endif
congvu	0:24041b847eb5	2306	if (res == FR_OK) {
congvu	0:24041b847eb5	2307	INIT_BUF(dj);
congvu	0:24041b847eb5	2308	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	2309	dir = dj.dir;
congvu	0:24041b847eb5	2310	#if !_FS_READONLY /* R/W configuration */
congvu	0:24041b847eb5	2311	if (res == FR_OK) {
congvu	0:24041b847eb5	2312	if (!dir) /* Current dir itself */
congvu	0:24041b847eb5	2313	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	2314	#if _FS_LOCK
congvu	0:24041b847eb5	2315	else
congvu	0:24041b847eb5	2316	res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
congvu	0:24041b847eb5	2317	#endif
congvu	0:24041b847eb5	2318	}
congvu	0:24041b847eb5	2319	/* Create or Open a file */
congvu	0:24041b847eb5	2320	if (mode & (FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW)) {
congvu	0:24041b847eb5	2321	DWORD dw, cl;
congvu	0:24041b847eb5	2322
congvu	0:24041b847eb5	2323	if (res != FR_OK) { /* No file, create new */
congvu	0:24041b847eb5	2324	if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
congvu	0:24041b847eb5	2325	#if _FS_LOCK
congvu	0:24041b847eb5	2326	res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
congvu	0:24041b847eb5	2327	#else
congvu	0:24041b847eb5	2328	res = dir_register(&dj);
congvu	0:24041b847eb5	2329	#endif
congvu	0:24041b847eb5	2330	mode \|= FA_CREATE_ALWAYS; /* File is created */
congvu	0:24041b847eb5	2331	dir = dj.dir; /* New entry */
congvu	0:24041b847eb5	2332	}
congvu	0:24041b847eb5	2333	else { /* Any object is already existing */
congvu	0:24041b847eb5	2334	if (dir[DIR_Attr] & (AM_RDO \| AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
congvu	0:24041b847eb5	2335	res = FR_DENIED;
congvu	0:24041b847eb5	2336	} else {
congvu	0:24041b847eb5	2337	if (mode & FA_CREATE_NEW) /* Cannot create as new file */
congvu	0:24041b847eb5	2338	res = FR_EXIST;
congvu	0:24041b847eb5	2339	}
congvu	0:24041b847eb5	2340	}
congvu	0:24041b847eb5	2341	if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
congvu	0:24041b847eb5	2342	dw = get_fattime(); /* Created time */
congvu	0:24041b847eb5	2343	ST_DWORD(dir+DIR_CrtTime, dw);
congvu	0:24041b847eb5	2344	dir[DIR_Attr] = 0; /* Reset attribute */
congvu	0:24041b847eb5	2345	ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
congvu	0:24041b847eb5	2346	cl = ld_clust(dj.fs, dir); /* Get start cluster */
congvu	0:24041b847eb5	2347	st_clust(dir, 0); /* cluster = 0 */
congvu	0:24041b847eb5	2348	dj.fs->wflag = 1;
congvu	0:24041b847eb5	2349	if (cl) { /* Remove the cluster chain if exist */
congvu	0:24041b847eb5	2350	dw = dj.fs->winsect;
congvu	0:24041b847eb5	2351	res = remove_chain(dj.fs, cl);
congvu	0:24041b847eb5	2352	if (res == FR_OK) {
congvu	0:24041b847eb5	2353	dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
congvu	0:24041b847eb5	2354	res = move_window(dj.fs, dw);
congvu	0:24041b847eb5	2355	}
congvu	0:24041b847eb5	2356	}
congvu	0:24041b847eb5	2357	}
congvu	0:24041b847eb5	2358	}
congvu	0:24041b847eb5	2359	else { /* Open an existing file */
congvu	0:24041b847eb5	2360	if (res == FR_OK) { /* Follow succeeded */
congvu	0:24041b847eb5	2361	if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
congvu	0:24041b847eb5	2362	res = FR_NO_FILE;
congvu	0:24041b847eb5	2363	} else {
congvu	0:24041b847eb5	2364	if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
congvu	0:24041b847eb5	2365	res = FR_DENIED;
congvu	0:24041b847eb5	2366	}
congvu	0:24041b847eb5	2367	}
congvu	0:24041b847eb5	2368	}
congvu	0:24041b847eb5	2369	if (res == FR_OK) {
congvu	0:24041b847eb5	2370	if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
congvu	0:24041b847eb5	2371	mode \|= FA__WRITTEN;
congvu	0:24041b847eb5	2372	fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
congvu	0:24041b847eb5	2373	fp->dir_ptr = dir;
congvu	0:24041b847eb5	2374	#if _FS_LOCK
congvu	0:24041b847eb5	2375	fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
congvu	0:24041b847eb5	2376	if (!fp->lockid) res = FR_INT_ERR;
congvu	0:24041b847eb5	2377	#endif
congvu	0:24041b847eb5	2378	}
congvu	0:24041b847eb5	2379
congvu	0:24041b847eb5	2380	#else /* R/O configuration */
congvu	0:24041b847eb5	2381	if (res == FR_OK) { /* Follow succeeded */
congvu	0:24041b847eb5	2382	dir = dj.dir;
congvu	0:24041b847eb5	2383	if (!dir) { /* Current dir itself */
congvu	0:24041b847eb5	2384	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	2385	} else {
congvu	0:24041b847eb5	2386	if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
congvu	0:24041b847eb5	2387	res = FR_NO_FILE;
congvu	0:24041b847eb5	2388	}
congvu	0:24041b847eb5	2389	}
congvu	0:24041b847eb5	2390	#endif
congvu	0:24041b847eb5	2391	FREE_BUF();
congvu	0:24041b847eb5	2392
congvu	0:24041b847eb5	2393	if (res == FR_OK) {
congvu	0:24041b847eb5	2394	fp->flag = mode; /* File access mode */
congvu	0:24041b847eb5	2395	fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
congvu	0:24041b847eb5	2396	fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
congvu	0:24041b847eb5	2397	fp->fptr = 0; /* File pointer */
congvu	0:24041b847eb5	2398	fp->dsect = 0;
congvu	0:24041b847eb5	2399	#if _USE_FASTSEEK
congvu	0:24041b847eb5	2400	fp->cltbl = 0; /* Normal seek mode */
congvu	0:24041b847eb5	2401	#endif
congvu	0:24041b847eb5	2402	fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
congvu	0:24041b847eb5	2403	}
congvu	0:24041b847eb5	2404	}
congvu	0:24041b847eb5	2405
congvu	0:24041b847eb5	2406	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	2407	}
congvu	0:24041b847eb5	2408
congvu	0:24041b847eb5	2409
congvu	0:24041b847eb5	2410
congvu	0:24041b847eb5	2411
congvu	0:24041b847eb5	2412	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2413	/* Read File */
congvu	0:24041b847eb5	2414	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2415
congvu	0:24041b847eb5	2416	FRESULT f_read (
congvu	0:24041b847eb5	2417	FIL fp, / Pointer to the file object */
congvu	0:24041b847eb5	2418	void buff, / Pointer to data buffer */
congvu	0:24041b847eb5	2419	UINT btr, /* Number of bytes to read */
congvu	0:24041b847eb5	2420	UINT br / Pointer to number of bytes read */
congvu	0:24041b847eb5	2421	)
congvu	0:24041b847eb5	2422	{
congvu	0:24041b847eb5	2423	FRESULT res;
congvu	0:24041b847eb5	2424	DWORD clst, sect, remain;
congvu	0:24041b847eb5	2425	UINT rcnt, cc;
congvu	0:24041b847eb5	2426	BYTE csect, rbuff = (BYTE )buff;
congvu	0:24041b847eb5	2427
congvu	0:24041b847eb5	2428
congvu	0:24041b847eb5	2429	br = 0; / Clear read byte counter */
congvu	0:24041b847eb5	2430
congvu	0:24041b847eb5	2431	res = validate(fp); /* Check validity */
congvu	0:24041b847eb5	2432	if (res != FR_OK) LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	2433	if (fp->flag & FA__ERROR) /* Aborted file? */
congvu	0:24041b847eb5	2434	LEAVE_FF(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2435	if (!(fp->flag & FA_READ)) /* Check access mode */
congvu	0:24041b847eb5	2436	LEAVE_FF(fp->fs, FR_DENIED);
congvu	0:24041b847eb5	2437	remain = fp->fsize - fp->fptr;
congvu	0:24041b847eb5	2438	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
congvu	0:24041b847eb5	2439
congvu	0:24041b847eb5	2440	for ( ; btr; /* Repeat until all data read */
congvu	0:24041b847eb5	2441	rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
congvu	0:24041b847eb5	2442	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
congvu	0:24041b847eb5	2443	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
congvu	0:24041b847eb5	2444	if (!csect) { /* On the cluster boundary? */
congvu	0:24041b847eb5	2445	if (fp->fptr == 0) { /* On the top of the file? */
congvu	0:24041b847eb5	2446	clst = fp->sclust; /* Follow from the origin */
congvu	0:24041b847eb5	2447	} else { /* Middle or end of the file */
congvu	0:24041b847eb5	2448	#if _USE_FASTSEEK
congvu	0:24041b847eb5	2449	if (fp->cltbl)
congvu	0:24041b847eb5	2450	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
congvu	0:24041b847eb5	2451	else
congvu	0:24041b847eb5	2452	#endif
congvu	0:24041b847eb5	2453	clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
congvu	0:24041b847eb5	2454	}
congvu	0:24041b847eb5	2455	if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2456	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2457	fp->clust = clst; /* Update current cluster */
congvu	0:24041b847eb5	2458	}
congvu	0:24041b847eb5	2459	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
congvu	0:24041b847eb5	2460	if (!sect) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2461	sect += csect;
congvu	0:24041b847eb5	2462	cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
congvu	0:24041b847eb5	2463	if (cc) { /* Read maximum contiguous sectors directly */
congvu	0:24041b847eb5	2464	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
congvu	0:24041b847eb5	2465	cc = fp->fs->csize - csect;
congvu	0:24041b847eb5	2466	if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
congvu	0:24041b847eb5	2467	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2468	#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
congvu	0:24041b847eb5	2469	#if _FS_TINY
congvu	0:24041b847eb5	2470	if (fp->fs->wflag && fp->fs->winsect - sect < cc)
congvu	0:24041b847eb5	2471	mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
congvu	0:24041b847eb5	2472	#else
congvu	0:24041b847eb5	2473	if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
congvu	0:24041b847eb5	2474	mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
congvu	0:24041b847eb5	2475	#endif
congvu	0:24041b847eb5	2476	#endif
congvu	0:24041b847eb5	2477	rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
congvu	0:24041b847eb5	2478	continue;
congvu	0:24041b847eb5	2479	}
congvu	0:24041b847eb5	2480	#if !_FS_TINY
congvu	0:24041b847eb5	2481	if (fp->dsect != sect) { /* Load data sector if not in cache */
congvu	0:24041b847eb5	2482	#if !_FS_READONLY
congvu	0:24041b847eb5	2483	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
congvu	0:24041b847eb5	2484	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
congvu	0:24041b847eb5	2485	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2486	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2487	}
congvu	0:24041b847eb5	2488	#endif
congvu	0:24041b847eb5	2489	if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
congvu	0:24041b847eb5	2490	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2491	}
congvu	0:24041b847eb5	2492	#endif
congvu	0:24041b847eb5	2493	fp->dsect = sect;
congvu	0:24041b847eb5	2494	}
congvu	0:24041b847eb5	2495	rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
congvu	0:24041b847eb5	2496	if (rcnt > btr) rcnt = btr;
congvu	0:24041b847eb5	2497	#if _FS_TINY
congvu	0:24041b847eb5	2498	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
congvu	0:24041b847eb5	2499	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2500	mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
congvu	0:24041b847eb5	2501	#else
congvu	0:24041b847eb5	2502	mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
congvu	0:24041b847eb5	2503	#endif
congvu	0:24041b847eb5	2504	}
congvu	0:24041b847eb5	2505
congvu	0:24041b847eb5	2506	LEAVE_FF(fp->fs, FR_OK);
congvu	0:24041b847eb5	2507	}
congvu	0:24041b847eb5	2508
congvu	0:24041b847eb5	2509
congvu	0:24041b847eb5	2510
congvu	0:24041b847eb5	2511
congvu	0:24041b847eb5	2512	#if !_FS_READONLY
congvu	0:24041b847eb5	2513	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2514	/* Write File */
congvu	0:24041b847eb5	2515	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2516
congvu	0:24041b847eb5	2517	FRESULT f_write (
congvu	0:24041b847eb5	2518	FIL fp, / Pointer to the file object */
congvu	0:24041b847eb5	2519	const void buff, / Pointer to the data to be written */
congvu	0:24041b847eb5	2520	UINT btw, /* Number of bytes to write */
congvu	0:24041b847eb5	2521	UINT bw / Pointer to number of bytes written */
congvu	0:24041b847eb5	2522	)
congvu	0:24041b847eb5	2523	{
congvu	0:24041b847eb5	2524	FRESULT res;
congvu	0:24041b847eb5	2525	DWORD clst, sect;
congvu	0:24041b847eb5	2526	UINT wcnt, cc;
congvu	0:24041b847eb5	2527	const BYTE wbuff = (const BYTE )buff;
congvu	0:24041b847eb5	2528	BYTE csect;
congvu	0:24041b847eb5	2529
congvu	0:24041b847eb5	2530
congvu	0:24041b847eb5	2531	bw = 0; / Clear write byte counter */
congvu	0:24041b847eb5	2532
congvu	0:24041b847eb5	2533	res = validate(fp); /* Check validity */
congvu	0:24041b847eb5	2534	if (res != FR_OK) LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	2535	if (fp->flag & FA__ERROR) /* Aborted file? */
congvu	0:24041b847eb5	2536	LEAVE_FF(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2537	if (!(fp->flag & FA_WRITE)) /* Check access mode */
congvu	0:24041b847eb5	2538	LEAVE_FF(fp->fs, FR_DENIED);
congvu	0:24041b847eb5	2539	if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
congvu	0:24041b847eb5	2540
congvu	0:24041b847eb5	2541	for ( ; btw; /* Repeat until all data written */
congvu	0:24041b847eb5	2542	wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
congvu	0:24041b847eb5	2543	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
congvu	0:24041b847eb5	2544	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
congvu	0:24041b847eb5	2545	if (!csect) { /* On the cluster boundary? */
congvu	0:24041b847eb5	2546	if (fp->fptr == 0) { /* On the top of the file? */
congvu	0:24041b847eb5	2547	clst = fp->sclust; /* Follow from the origin */
congvu	0:24041b847eb5	2548	if (clst == 0) /* When no cluster is allocated, */
congvu	0:24041b847eb5	2549	fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
congvu	0:24041b847eb5	2550	} else { /* Middle or end of the file */
congvu	0:24041b847eb5	2551	#if _USE_FASTSEEK
congvu	0:24041b847eb5	2552	if (fp->cltbl)
congvu	0:24041b847eb5	2553	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
congvu	0:24041b847eb5	2554	else
congvu	0:24041b847eb5	2555	#endif
congvu	0:24041b847eb5	2556	clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
congvu	0:24041b847eb5	2557	}
congvu	0:24041b847eb5	2558	if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
congvu	0:24041b847eb5	2559	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2560	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2561	fp->clust = clst; /* Update current cluster */
congvu	0:24041b847eb5	2562	}
congvu	0:24041b847eb5	2563	#if _FS_TINY
congvu	0:24041b847eb5	2564	if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
congvu	0:24041b847eb5	2565	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2566	#else
congvu	0:24041b847eb5	2567	if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
congvu	0:24041b847eb5	2568	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
congvu	0:24041b847eb5	2569	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2570	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2571	}
congvu	0:24041b847eb5	2572	#endif
congvu	0:24041b847eb5	2573	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
congvu	0:24041b847eb5	2574	if (!sect) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2575	sect += csect;
congvu	0:24041b847eb5	2576	cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
congvu	0:24041b847eb5	2577	if (cc) { /* Write maximum contiguous sectors directly */
congvu	0:24041b847eb5	2578	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
congvu	0:24041b847eb5	2579	cc = fp->fs->csize - csect;
congvu	0:24041b847eb5	2580	if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
congvu	0:24041b847eb5	2581	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2582	#if _FS_TINY
congvu	0:24041b847eb5	2583	if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
congvu	0:24041b847eb5	2584	mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
congvu	0:24041b847eb5	2585	fp->fs->wflag = 0;
congvu	0:24041b847eb5	2586	}
congvu	0:24041b847eb5	2587	#else
congvu	0:24041b847eb5	2588	if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
congvu	0:24041b847eb5	2589	mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
congvu	0:24041b847eb5	2590	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2591	}
congvu	0:24041b847eb5	2592	#endif
congvu	0:24041b847eb5	2593	wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
congvu	0:24041b847eb5	2594	continue;
congvu	0:24041b847eb5	2595	}
congvu	0:24041b847eb5	2596	#if _FS_TINY
congvu	0:24041b847eb5	2597	if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
congvu	0:24041b847eb5	2598	if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2599	fp->fs->winsect = sect;
congvu	0:24041b847eb5	2600	}
congvu	0:24041b847eb5	2601	#else
congvu	0:24041b847eb5	2602	if (fp->dsect != sect) { /* Fill sector cache with file data */
congvu	0:24041b847eb5	2603	if (fp->fptr < fp->fsize &&
congvu	0:24041b847eb5	2604	disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
congvu	0:24041b847eb5	2605	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2606	}
congvu	0:24041b847eb5	2607	#endif
congvu	0:24041b847eb5	2608	fp->dsect = sect;
congvu	0:24041b847eb5	2609	}
congvu	0:24041b847eb5	2610	wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
congvu	0:24041b847eb5	2611	if (wcnt > btw) wcnt = btw;
congvu	0:24041b847eb5	2612	#if _FS_TINY
congvu	0:24041b847eb5	2613	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
congvu	0:24041b847eb5	2614	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2615	mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
congvu	0:24041b847eb5	2616	fp->fs->wflag = 1;
congvu	0:24041b847eb5	2617	#else
congvu	0:24041b847eb5	2618	mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
congvu	0:24041b847eb5	2619	fp->flag \|= FA__DIRTY;
congvu	0:24041b847eb5	2620	#endif
congvu	0:24041b847eb5	2621	}
congvu	0:24041b847eb5	2622
congvu	0:24041b847eb5	2623	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
congvu	0:24041b847eb5	2624	fp->flag \|= FA__WRITTEN; /* Set file change flag */
congvu	0:24041b847eb5	2625
congvu	0:24041b847eb5	2626	LEAVE_FF(fp->fs, FR_OK);
congvu	0:24041b847eb5	2627	}
congvu	0:24041b847eb5	2628
congvu	0:24041b847eb5	2629
congvu	0:24041b847eb5	2630
congvu	0:24041b847eb5	2631
congvu	0:24041b847eb5	2632	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2633	/* Synchronize the File Object */
congvu	0:24041b847eb5	2634	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2635
congvu	0:24041b847eb5	2636	FRESULT f_sync (
congvu	0:24041b847eb5	2637	FIL fp / Pointer to the file object */
congvu	0:24041b847eb5	2638	)
congvu	0:24041b847eb5	2639	{
congvu	0:24041b847eb5	2640	FRESULT res;
congvu	0:24041b847eb5	2641	DWORD tim;
congvu	0:24041b847eb5	2642	BYTE *dir;
congvu	0:24041b847eb5	2643
congvu	0:24041b847eb5	2644
congvu	0:24041b847eb5	2645	res = validate(fp); /* Check validity of the object */
congvu	0:24041b847eb5	2646	if (res == FR_OK) {
congvu	0:24041b847eb5	2647	if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
congvu	0:24041b847eb5	2648	#if !_FS_TINY /* Write-back dirty buffer */
congvu	0:24041b847eb5	2649	if (fp->flag & FA__DIRTY) {
congvu	0:24041b847eb5	2650	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
congvu	0:24041b847eb5	2651	LEAVE_FF(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2652	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2653	}
congvu	0:24041b847eb5	2654	#endif
congvu	0:24041b847eb5	2655	/* Update the directory entry */
congvu	0:24041b847eb5	2656	res = move_window(fp->fs, fp->dir_sect);
congvu	0:24041b847eb5	2657	if (res == FR_OK) {
congvu	0:24041b847eb5	2658	dir = fp->dir_ptr;
congvu	0:24041b847eb5	2659	dir[DIR_Attr] \|= AM_ARC; /* Set archive bit */
congvu	0:24041b847eb5	2660	ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
congvu	0:24041b847eb5	2661	st_clust(dir, fp->sclust); /* Update start cluster */
congvu	0:24041b847eb5	2662	tim = get_fattime(); /* Update updated time */
congvu	0:24041b847eb5	2663	ST_DWORD(dir+DIR_WrtTime, tim);
congvu	0:24041b847eb5	2664	ST_WORD(dir+DIR_LstAccDate, 0);
congvu	0:24041b847eb5	2665	fp->flag &= ~FA__WRITTEN;
congvu	0:24041b847eb5	2666	fp->fs->wflag = 1;
congvu	0:24041b847eb5	2667	res = sync(fp->fs);
congvu	0:24041b847eb5	2668	}
congvu	0:24041b847eb5	2669	}
congvu	0:24041b847eb5	2670	}
congvu	0:24041b847eb5	2671
congvu	0:24041b847eb5	2672	LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	2673	}
congvu	0:24041b847eb5	2674
congvu	0:24041b847eb5	2675	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	2676
congvu	0:24041b847eb5	2677
congvu	0:24041b847eb5	2678
congvu	0:24041b847eb5	2679
congvu	0:24041b847eb5	2680	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2681	/* Close File */
congvu	0:24041b847eb5	2682	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2683
congvu	0:24041b847eb5	2684	FRESULT f_close (
congvu	0:24041b847eb5	2685	FIL fp / Pointer to the file object to be closed */
congvu	0:24041b847eb5	2686	)
congvu	0:24041b847eb5	2687	{
congvu	0:24041b847eb5	2688	FRESULT res;
congvu	0:24041b847eb5	2689
congvu	0:24041b847eb5	2690
congvu	0:24041b847eb5	2691	#if _FS_READONLY
congvu	0:24041b847eb5	2692	res = validate(fp);
congvu	0:24041b847eb5	2693	{
congvu	0:24041b847eb5	2694	#if _FS_REENTRANT
congvu	0:24041b847eb5	2695	FATFS *fs = fp->fs;
congvu	0:24041b847eb5	2696	#endif
congvu	0:24041b847eb5	2697	if (res == FR_OK) fp->fs = 0; /* Discard file object */
congvu	0:24041b847eb5	2698	LEAVE_FF(fs, res);
congvu	0:24041b847eb5	2699	}
congvu	0:24041b847eb5	2700	#else
congvu	0:24041b847eb5	2701	res = f_sync(fp); /* Flush cached data */
congvu	0:24041b847eb5	2702	#if _FS_LOCK
congvu	0:24041b847eb5	2703	if (res == FR_OK) { /* Decrement open counter */
congvu	0:24041b847eb5	2704	#if _FS_REENTRANT
congvu	0:24041b847eb5	2705	FATFS *fs = fp->fs;;
congvu	0:24041b847eb5	2706	res = validate(fp);
congvu	0:24041b847eb5	2707	if (res == FR_OK) {
congvu	0:24041b847eb5	2708	res = dec_lock(fp->lockid);
congvu	0:24041b847eb5	2709	unlock_fs(fs, FR_OK);
congvu	0:24041b847eb5	2710	}
congvu	0:24041b847eb5	2711	#else
congvu	0:24041b847eb5	2712	res = dec_lock(fp->lockid);
congvu	0:24041b847eb5	2713	#endif
congvu	0:24041b847eb5	2714	}
congvu	0:24041b847eb5	2715	#endif
congvu	0:24041b847eb5	2716	if (res == FR_OK) fp->fs = 0; /* Discard file object */
congvu	0:24041b847eb5	2717	return res;
congvu	0:24041b847eb5	2718	#endif
congvu	0:24041b847eb5	2719	}
congvu	0:24041b847eb5	2720
congvu	0:24041b847eb5	2721
congvu	0:24041b847eb5	2722
congvu	0:24041b847eb5	2723
congvu	0:24041b847eb5	2724	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2725	/* Current Drive/Directory Handlings */
congvu	0:24041b847eb5	2726	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2727
congvu	0:24041b847eb5	2728	#if _FS_RPATH >= 1
congvu	0:24041b847eb5	2729
congvu	0:24041b847eb5	2730	FRESULT f_chdrive (
congvu	0:24041b847eb5	2731	BYTE drv /* Drive number */
congvu	0:24041b847eb5	2732	)
congvu	0:24041b847eb5	2733	{
congvu	0:24041b847eb5	2734	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
congvu	0:24041b847eb5	2735
congvu	0:24041b847eb5	2736	CurrVol = drv;
congvu	0:24041b847eb5	2737
congvu	0:24041b847eb5	2738	return FR_OK;
congvu	0:24041b847eb5	2739	}
congvu	0:24041b847eb5	2740
congvu	0:24041b847eb5	2741
congvu	0:24041b847eb5	2742
congvu	0:24041b847eb5	2743	FRESULT f_chdir (
congvu	0:24041b847eb5	2744	const TCHAR path / Pointer to the directory path */
congvu	0:24041b847eb5	2745	)
congvu	0:24041b847eb5	2746	{
congvu	0:24041b847eb5	2747	FRESULT res;
congvu	0:24041b847eb5	2748	DIR dj;
congvu	0:24041b847eb5	2749	DEF_NAMEBUF;
congvu	0:24041b847eb5	2750
congvu	0:24041b847eb5	2751
congvu	0:24041b847eb5	2752	res = chk_mounted(&path, &dj.fs, 0);
congvu	0:24041b847eb5	2753	if (res == FR_OK) {
congvu	0:24041b847eb5	2754	INIT_BUF(dj);
congvu	0:24041b847eb5	2755	res = follow_path(&dj, path); /* Follow the path */
congvu	0:24041b847eb5	2756	FREE_BUF();
congvu	0:24041b847eb5	2757	if (res == FR_OK) { /* Follow completed */
congvu	0:24041b847eb5	2758	if (!dj.dir) {
congvu	0:24041b847eb5	2759	dj.fs->cdir = dj.sclust; /* Start directory itself */
congvu	0:24041b847eb5	2760	} else {
congvu	0:24041b847eb5	2761	if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
congvu	0:24041b847eb5	2762	dj.fs->cdir = ld_clust(dj.fs, dj.dir);
congvu	0:24041b847eb5	2763	else
congvu	0:24041b847eb5	2764	res = FR_NO_PATH; /* Reached but a file */
congvu	0:24041b847eb5	2765	}
congvu	0:24041b847eb5	2766	}
congvu	0:24041b847eb5	2767	if (res == FR_NO_FILE) res = FR_NO_PATH;
congvu	0:24041b847eb5	2768	}
congvu	0:24041b847eb5	2769
congvu	0:24041b847eb5	2770	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	2771	}
congvu	0:24041b847eb5	2772
congvu	0:24041b847eb5	2773
congvu	0:24041b847eb5	2774	#if _FS_RPATH >= 2
congvu	0:24041b847eb5	2775	FRESULT f_getcwd (
congvu	0:24041b847eb5	2776	TCHAR path, / Pointer to the directory path */
congvu	0:24041b847eb5	2777	UINT sz_path /* Size of path */
congvu	0:24041b847eb5	2778	)
congvu	0:24041b847eb5	2779	{
congvu	0:24041b847eb5	2780	FRESULT res;
congvu	0:24041b847eb5	2781	DIR dj;
congvu	0:24041b847eb5	2782	UINT i, n;
congvu	0:24041b847eb5	2783	DWORD ccl;
congvu	0:24041b847eb5	2784	TCHAR *tp;
congvu	0:24041b847eb5	2785	FILINFO fno;
congvu	0:24041b847eb5	2786	DEF_NAMEBUF;
congvu	0:24041b847eb5	2787
congvu	0:24041b847eb5	2788
congvu	0:24041b847eb5	2789	*path = 0;
congvu	0:24041b847eb5	2790	res = chk_mounted((const TCHAR*)&path, &dj.fs, 0); / Get current volume */
congvu	0:24041b847eb5	2791	if (res == FR_OK) {
congvu	0:24041b847eb5	2792	INIT_BUF(dj);
congvu	0:24041b847eb5	2793	i = sz_path; /* Bottom of buffer (dir stack base) */
congvu	0:24041b847eb5	2794	dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
congvu	0:24041b847eb5	2795	while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
congvu	0:24041b847eb5	2796	res = dir_sdi(&dj, 1); /* Get parent dir */
congvu	0:24041b847eb5	2797	if (res != FR_OK) break;
congvu	0:24041b847eb5	2798	res = dir_read(&dj);
congvu	0:24041b847eb5	2799	if (res != FR_OK) break;
congvu	0:24041b847eb5	2800	dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent dir */
congvu	0:24041b847eb5	2801	res = dir_sdi(&dj, 0);
congvu	0:24041b847eb5	2802	if (res != FR_OK) break;
congvu	0:24041b847eb5	2803	do { /* Find the entry links to the child dir */
congvu	0:24041b847eb5	2804	res = dir_read(&dj);
congvu	0:24041b847eb5	2805	if (res != FR_OK) break;
congvu	0:24041b847eb5	2806	if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
congvu	0:24041b847eb5	2807	res = dir_next(&dj, 0);
congvu	0:24041b847eb5	2808	} while (res == FR_OK);
congvu	0:24041b847eb5	2809	if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
congvu	0:24041b847eb5	2810	if (res != FR_OK) break;
congvu	0:24041b847eb5	2811	#if _USE_LFN
congvu	0:24041b847eb5	2812	fno.lfname = path;
congvu	0:24041b847eb5	2813	fno.lfsize = i;
congvu	0:24041b847eb5	2814	#endif
congvu	0:24041b847eb5	2815	get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
congvu	0:24041b847eb5	2816	tp = fno.fname;
congvu	0:24041b847eb5	2817	if (_USE_LFN && *path) tp = path;
congvu	0:24041b847eb5	2818	for (n = 0; tp[n]; n++) ;
congvu	0:24041b847eb5	2819	if (i < n + 3) {
congvu	0:24041b847eb5	2820	res = FR_NOT_ENOUGH_CORE; break;
congvu	0:24041b847eb5	2821	}
congvu	0:24041b847eb5	2822	while (n) path[--i] = tp[--n];
congvu	0:24041b847eb5	2823	path[--i] = '/';
congvu	0:24041b847eb5	2824	}
congvu	0:24041b847eb5	2825	tp = path;
congvu	0:24041b847eb5	2826	if (res == FR_OK) {
congvu	0:24041b847eb5	2827	tp++ = '0' + CurrVol; / Put drive number */
congvu	0:24041b847eb5	2828	*tp++ = ':';
congvu	0:24041b847eb5	2829	if (i == sz_path) { /* Root-dir */
congvu	0:24041b847eb5	2830	*tp++ = '/';
congvu	0:24041b847eb5	2831	} else { /* Sub-dir */
congvu	0:24041b847eb5	2832	do /* Add stacked path str */
congvu	0:24041b847eb5	2833	*tp++ = path[i++];
congvu	0:24041b847eb5	2834	while (i < sz_path);
congvu	0:24041b847eb5	2835	}
congvu	0:24041b847eb5	2836	}
congvu	0:24041b847eb5	2837	*tp = 0;
congvu	0:24041b847eb5	2838	FREE_BUF();
congvu	0:24041b847eb5	2839	}
congvu	0:24041b847eb5	2840
congvu	0:24041b847eb5	2841	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	2842	}
congvu	0:24041b847eb5	2843	#endif /* _FS_RPATH >= 2 */
congvu	0:24041b847eb5	2844	#endif /* _FS_RPATH >= 1 */
congvu	0:24041b847eb5	2845
congvu	0:24041b847eb5	2846
congvu	0:24041b847eb5	2847
congvu	0:24041b847eb5	2848	#if _FS_MINIMIZE <= 2
congvu	0:24041b847eb5	2849	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2850	/* Seek File R/W Pointer */
congvu	0:24041b847eb5	2851	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	2852
congvu	0:24041b847eb5	2853	FRESULT f_lseek (
congvu	0:24041b847eb5	2854	FIL fp, / Pointer to the file object */
congvu	0:24041b847eb5	2855	DWORD ofs /* File pointer from top of file */
congvu	0:24041b847eb5	2856	)
congvu	0:24041b847eb5	2857	{
congvu	0:24041b847eb5	2858	FRESULT res;
congvu	0:24041b847eb5	2859
congvu	0:24041b847eb5	2860
congvu	0:24041b847eb5	2861	res = validate(fp); /* Check validity of the object */
congvu	0:24041b847eb5	2862	if (res != FR_OK) LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	2863	if (fp->flag & FA__ERROR) /* Check abort flag */
congvu	0:24041b847eb5	2864	LEAVE_FF(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2865
congvu	0:24041b847eb5	2866	#if _USE_FASTSEEK
congvu	0:24041b847eb5	2867	if (fp->cltbl) { /* Fast seek */
congvu	0:24041b847eb5	2868	DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
congvu	0:24041b847eb5	2869
congvu	0:24041b847eb5	2870	if (ofs == CREATE_LINKMAP) { /* Create CLMT */
congvu	0:24041b847eb5	2871	tbl = fp->cltbl;
congvu	0:24041b847eb5	2872	tlen = tbl++; ulen = 2; / Given table size and required table size */
congvu	0:24041b847eb5	2873	cl = fp->sclust; /* Top of the chain */
congvu	0:24041b847eb5	2874	if (cl) {
congvu	0:24041b847eb5	2875	do {
congvu	0:24041b847eb5	2876	/* Get a fragment */
congvu	0:24041b847eb5	2877	tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
congvu	0:24041b847eb5	2878	do {
congvu	0:24041b847eb5	2879	pcl = cl; ncl++;
congvu	0:24041b847eb5	2880	cl = get_fat(fp->fs, cl);
congvu	0:24041b847eb5	2881	if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2882	if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2883	} while (cl == pcl + 1);
congvu	0:24041b847eb5	2884	if (ulen <= tlen) { /* Store the length and top of the fragment */
congvu	0:24041b847eb5	2885	tbl++ = ncl; tbl++ = tcl;
congvu	0:24041b847eb5	2886	}
congvu	0:24041b847eb5	2887	} while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
congvu	0:24041b847eb5	2888	}
congvu	0:24041b847eb5	2889	fp->cltbl = ulen; / Number of items used */
congvu	0:24041b847eb5	2890	if (ulen <= tlen)
congvu	0:24041b847eb5	2891	tbl = 0; / Terminate table */
congvu	0:24041b847eb5	2892	else
congvu	0:24041b847eb5	2893	res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
congvu	0:24041b847eb5	2894
congvu	0:24041b847eb5	2895	} else { /* Fast seek */
congvu	0:24041b847eb5	2896	if (ofs > fp->fsize) /* Clip offset at the file size */
congvu	0:24041b847eb5	2897	ofs = fp->fsize;
congvu	0:24041b847eb5	2898	fp->fptr = ofs; /* Set file pointer */
congvu	0:24041b847eb5	2899	if (ofs) {
congvu	0:24041b847eb5	2900	fp->clust = clmt_clust(fp, ofs - 1);
congvu	0:24041b847eb5	2901	dsc = clust2sect(fp->fs, fp->clust);
congvu	0:24041b847eb5	2902	if (!dsc) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2903	dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
congvu	0:24041b847eb5	2904	if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
congvu	0:24041b847eb5	2905	#if !_FS_TINY
congvu	0:24041b847eb5	2906	#if !_FS_READONLY
congvu	0:24041b847eb5	2907	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
congvu	0:24041b847eb5	2908	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
congvu	0:24041b847eb5	2909	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2910	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2911	}
congvu	0:24041b847eb5	2912	#endif
congvu	0:24041b847eb5	2913	if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
congvu	0:24041b847eb5	2914	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2915	#endif
congvu	0:24041b847eb5	2916	fp->dsect = dsc;
congvu	0:24041b847eb5	2917	}
congvu	0:24041b847eb5	2918	}
congvu	0:24041b847eb5	2919	}
congvu	0:24041b847eb5	2920	} else
congvu	0:24041b847eb5	2921	#endif
congvu	0:24041b847eb5	2922
congvu	0:24041b847eb5	2923	/* Normal Seek */
congvu	0:24041b847eb5	2924	{
congvu	0:24041b847eb5	2925	DWORD clst, bcs, nsect, ifptr;
congvu	0:24041b847eb5	2926
congvu	0:24041b847eb5	2927	if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
congvu	0:24041b847eb5	2928	#if !_FS_READONLY
congvu	0:24041b847eb5	2929	&& !(fp->flag & FA_WRITE)
congvu	0:24041b847eb5	2930	#endif
congvu	0:24041b847eb5	2931	) ofs = fp->fsize;
congvu	0:24041b847eb5	2932
congvu	0:24041b847eb5	2933	ifptr = fp->fptr;
congvu	0:24041b847eb5	2934	fp->fptr = nsect = 0;
congvu	0:24041b847eb5	2935	if (ofs) {
congvu	0:24041b847eb5	2936	bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
congvu	0:24041b847eb5	2937	if (ifptr > 0 &&
congvu	0:24041b847eb5	2938	(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
congvu	0:24041b847eb5	2939	fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
congvu	0:24041b847eb5	2940	ofs -= fp->fptr;
congvu	0:24041b847eb5	2941	clst = fp->clust;
congvu	0:24041b847eb5	2942	} else { /* When seek to back cluster, */
congvu	0:24041b847eb5	2943	clst = fp->sclust; /* start from the first cluster */
congvu	0:24041b847eb5	2944	#if !_FS_READONLY
congvu	0:24041b847eb5	2945	if (clst == 0) { /* If no cluster chain, create a new chain */
congvu	0:24041b847eb5	2946	clst = create_chain(fp->fs, 0);
congvu	0:24041b847eb5	2947	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2948	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2949	fp->sclust = clst;
congvu	0:24041b847eb5	2950	}
congvu	0:24041b847eb5	2951	#endif
congvu	0:24041b847eb5	2952	fp->clust = clst;
congvu	0:24041b847eb5	2953	}
congvu	0:24041b847eb5	2954	if (clst != 0) {
congvu	0:24041b847eb5	2955	while (ofs > bcs) { /* Cluster following loop */
congvu	0:24041b847eb5	2956	#if !_FS_READONLY
congvu	0:24041b847eb5	2957	if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
congvu	0:24041b847eb5	2958	clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
congvu	0:24041b847eb5	2959	if (clst == 0) { /* When disk gets full, clip file size */
congvu	0:24041b847eb5	2960	ofs = bcs; break;
congvu	0:24041b847eb5	2961	}
congvu	0:24041b847eb5	2962	} else
congvu	0:24041b847eb5	2963	#endif
congvu	0:24041b847eb5	2964	clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
congvu	0:24041b847eb5	2965	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2966	if (clst <= 1 \|\| clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2967	fp->clust = clst;
congvu	0:24041b847eb5	2968	fp->fptr += bcs;
congvu	0:24041b847eb5	2969	ofs -= bcs;
congvu	0:24041b847eb5	2970	}
congvu	0:24041b847eb5	2971	fp->fptr += ofs;
congvu	0:24041b847eb5	2972	if (ofs % SS(fp->fs)) {
congvu	0:24041b847eb5	2973	nsect = clust2sect(fp->fs, clst); /* Current sector */
congvu	0:24041b847eb5	2974	if (!nsect) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	2975	nsect += ofs / SS(fp->fs);
congvu	0:24041b847eb5	2976	}
congvu	0:24041b847eb5	2977	}
congvu	0:24041b847eb5	2978	}
congvu	0:24041b847eb5	2979	if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
congvu	0:24041b847eb5	2980	#if !_FS_TINY
congvu	0:24041b847eb5	2981	#if !_FS_READONLY
congvu	0:24041b847eb5	2982	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
congvu	0:24041b847eb5	2983	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
congvu	0:24041b847eb5	2984	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2985	fp->flag &= ~FA__DIRTY;
congvu	0:24041b847eb5	2986	}
congvu	0:24041b847eb5	2987	#endif
congvu	0:24041b847eb5	2988	if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
congvu	0:24041b847eb5	2989	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	2990	#endif
congvu	0:24041b847eb5	2991	fp->dsect = nsect;
congvu	0:24041b847eb5	2992	}
congvu	0:24041b847eb5	2993	#if !_FS_READONLY
congvu	0:24041b847eb5	2994	if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
congvu	0:24041b847eb5	2995	fp->fsize = fp->fptr;
congvu	0:24041b847eb5	2996	fp->flag \|= FA__WRITTEN;
congvu	0:24041b847eb5	2997	}
congvu	0:24041b847eb5	2998	#endif
congvu	0:24041b847eb5	2999	}
congvu	0:24041b847eb5	3000
congvu	0:24041b847eb5	3001	LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	3002	}
congvu	0:24041b847eb5	3003
congvu	0:24041b847eb5	3004
congvu	0:24041b847eb5	3005
congvu	0:24041b847eb5	3006	#if _FS_MINIMIZE <= 1
congvu	0:24041b847eb5	3007	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3008	/* Create a Directory Object */
congvu	0:24041b847eb5	3009	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3010
congvu	0:24041b847eb5	3011	FRESULT f_opendir (
congvu	0:24041b847eb5	3012	FATFS_DIR dj, / Pointer to directory object to create */
congvu	0:24041b847eb5	3013	const TCHAR path / Pointer to the directory path */
congvu	0:24041b847eb5	3014	)
congvu	0:24041b847eb5	3015	{
congvu	0:24041b847eb5	3016	FRESULT res;
congvu	0:24041b847eb5	3017	FATFS *fs;
congvu	0:24041b847eb5	3018	DEF_NAMEBUF;
congvu	0:24041b847eb5	3019
congvu	0:24041b847eb5	3020
congvu	0:24041b847eb5	3021	if (!dj) return FR_INVALID_OBJECT;
congvu	0:24041b847eb5	3022
congvu	0:24041b847eb5	3023	res = chk_mounted(&path, &dj->fs, 0);
congvu	0:24041b847eb5	3024	fs = dj->fs;
congvu	0:24041b847eb5	3025	if (res == FR_OK) {
congvu	0:24041b847eb5	3026	INIT_BUF(*dj);
congvu	0:24041b847eb5	3027	res = follow_path(dj, path); /* Follow the path to the directory */
congvu	0:24041b847eb5	3028	FREE_BUF();
congvu	0:24041b847eb5	3029	if (res == FR_OK) { /* Follow completed */
congvu	0:24041b847eb5	3030	if (dj->dir) { /* It is not the root dir */
congvu	0:24041b847eb5	3031	if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
congvu	0:24041b847eb5	3032	dj->sclust = ld_clust(fs, dj->dir);
congvu	0:24041b847eb5	3033	} else { /* The object is not a directory */
congvu	0:24041b847eb5	3034	res = FR_NO_PATH;
congvu	0:24041b847eb5	3035	}
congvu	0:24041b847eb5	3036	}
congvu	0:24041b847eb5	3037	if (res == FR_OK) {
congvu	0:24041b847eb5	3038	dj->id = fs->id;
congvu	0:24041b847eb5	3039	res = dir_sdi(dj, 0); /* Rewind dir */
congvu	0:24041b847eb5	3040	}
congvu	0:24041b847eb5	3041	}
congvu	0:24041b847eb5	3042	if (res == FR_NO_FILE) res = FR_NO_PATH;
congvu	0:24041b847eb5	3043	if (res != FR_OK) dj->fs = 0; /* Invalidate the dir object if function faild */
congvu	0:24041b847eb5	3044	} else {
congvu	0:24041b847eb5	3045	dj->fs = 0;
congvu	0:24041b847eb5	3046	}
congvu	0:24041b847eb5	3047
congvu	0:24041b847eb5	3048	LEAVE_FF(fs, res);
congvu	0:24041b847eb5	3049	}
congvu	0:24041b847eb5	3050
congvu	0:24041b847eb5	3051
congvu	0:24041b847eb5	3052
congvu	0:24041b847eb5	3053
congvu	0:24041b847eb5	3054	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3055	/* Read Directory Entry in Sequence */
congvu	0:24041b847eb5	3056	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3057
congvu	0:24041b847eb5	3058	FRESULT f_readdir (
congvu	0:24041b847eb5	3059	FATFS_DIR dj, / Pointer to the open directory object */
congvu	0:24041b847eb5	3060	FILINFO fno / Pointer to file information to return */
congvu	0:24041b847eb5	3061	)
congvu	0:24041b847eb5	3062	{
congvu	0:24041b847eb5	3063	FRESULT res;
congvu	0:24041b847eb5	3064	DEF_NAMEBUF;
congvu	0:24041b847eb5	3065
congvu	0:24041b847eb5	3066
congvu	0:24041b847eb5	3067	res = validate(dj); /* Check validity of the object */
congvu	0:24041b847eb5	3068	if (res == FR_OK) {
congvu	0:24041b847eb5	3069	if (!fno) {
congvu	0:24041b847eb5	3070	res = dir_sdi(dj, 0); /* Rewind the directory object */
congvu	0:24041b847eb5	3071	} else {
congvu	0:24041b847eb5	3072	INIT_BUF(*dj);
congvu	0:24041b847eb5	3073	res = dir_read(dj); /* Read an directory item */
congvu	0:24041b847eb5	3074	if (res == FR_NO_FILE) { /* Reached end of dir */
congvu	0:24041b847eb5	3075	dj->sect = 0;
congvu	0:24041b847eb5	3076	res = FR_OK;
congvu	0:24041b847eb5	3077	}
congvu	0:24041b847eb5	3078	if (res == FR_OK) { /* A valid entry is found */
congvu	0:24041b847eb5	3079	get_fileinfo(dj, fno); /* Get the object information */
congvu	0:24041b847eb5	3080	res = dir_next(dj, 0); /* Increment index for next */
congvu	0:24041b847eb5	3081	if (res == FR_NO_FILE) {
congvu	0:24041b847eb5	3082	dj->sect = 0;
congvu	0:24041b847eb5	3083	res = FR_OK;
congvu	0:24041b847eb5	3084	}
congvu	0:24041b847eb5	3085	}
congvu	0:24041b847eb5	3086	FREE_BUF();
congvu	0:24041b847eb5	3087	}
congvu	0:24041b847eb5	3088	}
congvu	0:24041b847eb5	3089
congvu	0:24041b847eb5	3090	LEAVE_FF(dj->fs, res);
congvu	0:24041b847eb5	3091	}
congvu	0:24041b847eb5	3092
congvu	0:24041b847eb5	3093
congvu	0:24041b847eb5	3094
congvu	0:24041b847eb5	3095	#if _FS_MINIMIZE == 0
congvu	0:24041b847eb5	3096	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3097	/* Get File Status */
congvu	0:24041b847eb5	3098	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3099
congvu	0:24041b847eb5	3100	FRESULT f_stat (
congvu	0:24041b847eb5	3101	const TCHAR path, / Pointer to the file path */
congvu	0:24041b847eb5	3102	FILINFO fno / Pointer to file information to return */
congvu	0:24041b847eb5	3103	)
congvu	0:24041b847eb5	3104	{
congvu	0:24041b847eb5	3105	FRESULT res;
congvu	0:24041b847eb5	3106	FATFS_DIR dj;
congvu	0:24041b847eb5	3107	DEF_NAMEBUF;
congvu	0:24041b847eb5	3108
congvu	0:24041b847eb5	3109
congvu	0:24041b847eb5	3110	res = chk_mounted(&path, &dj.fs, 0);
congvu	0:24041b847eb5	3111	if (res == FR_OK) {
congvu	0:24041b847eb5	3112	INIT_BUF(dj);
congvu	0:24041b847eb5	3113	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	3114	if (res == FR_OK) { /* Follow completed */
congvu	0:24041b847eb5	3115	if (dj.dir) /* Found an object */
congvu	0:24041b847eb5	3116	get_fileinfo(&dj, fno);
congvu	0:24041b847eb5	3117	else /* It is root dir */
congvu	0:24041b847eb5	3118	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3119	}
congvu	0:24041b847eb5	3120	FREE_BUF();
congvu	0:24041b847eb5	3121	}
congvu	0:24041b847eb5	3122
congvu	0:24041b847eb5	3123	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	3124	}
congvu	0:24041b847eb5	3125
congvu	0:24041b847eb5	3126
congvu	0:24041b847eb5	3127
congvu	0:24041b847eb5	3128	#if !_FS_READONLY
congvu	0:24041b847eb5	3129	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3130	/* Get Number of Free Clusters */
congvu	0:24041b847eb5	3131	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3132
congvu	0:24041b847eb5	3133	FRESULT f_getfree (
congvu	0:24041b847eb5	3134	const TCHAR path, / Pointer to the logical drive number (root dir) */
congvu	0:24041b847eb5	3135	DWORD nclst, / Pointer to the variable to return number of free clusters */
congvu	0:24041b847eb5	3136	FATFS *fatfs / Pointer to pointer to corresponding file system object to return */
congvu	0:24041b847eb5	3137	)
congvu	0:24041b847eb5	3138	{
congvu	0:24041b847eb5	3139	FRESULT res;
congvu	0:24041b847eb5	3140	FATFS *fs;
congvu	0:24041b847eb5	3141	DWORD n, clst, sect, stat;
congvu	0:24041b847eb5	3142	UINT i;
congvu	0:24041b847eb5	3143	BYTE fat, *p;
congvu	0:24041b847eb5	3144
congvu	0:24041b847eb5	3145
congvu	0:24041b847eb5	3146	/* Get drive number */
congvu	0:24041b847eb5	3147	res = chk_mounted(&path, fatfs, 0);
congvu	0:24041b847eb5	3148	fs = *fatfs;
congvu	0:24041b847eb5	3149	if (res == FR_OK) {
congvu	0:24041b847eb5	3150	/* If free_clust is valid, return it without full cluster scan */
congvu	0:24041b847eb5	3151	if (fs->free_clust <= fs->n_fatent - 2) {
congvu	0:24041b847eb5	3152	*nclst = fs->free_clust;
congvu	0:24041b847eb5	3153	} else {
congvu	0:24041b847eb5	3154	/* Get number of free clusters */
congvu	0:24041b847eb5	3155	fat = fs->fs_type;
congvu	0:24041b847eb5	3156	n = 0;
congvu	0:24041b847eb5	3157	if (fat == FS_FAT12) {
congvu	0:24041b847eb5	3158	clst = 2;
congvu	0:24041b847eb5	3159	do {
congvu	0:24041b847eb5	3160	stat = get_fat(fs, clst);
congvu	0:24041b847eb5	3161	if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
congvu	0:24041b847eb5	3162	if (stat == 1) { res = FR_INT_ERR; break; }
congvu	0:24041b847eb5	3163	if (stat == 0) n++;
congvu	0:24041b847eb5	3164	} while (++clst < fs->n_fatent);
congvu	0:24041b847eb5	3165	} else {
congvu	0:24041b847eb5	3166	clst = fs->n_fatent;
congvu	0:24041b847eb5	3167	sect = fs->fatbase;
congvu	0:24041b847eb5	3168	i = 0; p = 0;
congvu	0:24041b847eb5	3169	do {
congvu	0:24041b847eb5	3170	if (!i) {
congvu	0:24041b847eb5	3171	res = move_window(fs, sect++);
congvu	0:24041b847eb5	3172	if (res != FR_OK) break;
congvu	0:24041b847eb5	3173	p = fs->win;
congvu	0:24041b847eb5	3174	i = SS(fs);
congvu	0:24041b847eb5	3175	}
congvu	0:24041b847eb5	3176	if (fat == FS_FAT16) {
congvu	0:24041b847eb5	3177	if (LD_WORD(p) == 0) n++;
congvu	0:24041b847eb5	3178	p += 2; i -= 2;
congvu	0:24041b847eb5	3179	} else {
congvu	0:24041b847eb5	3180	if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
congvu	0:24041b847eb5	3181	p += 4; i -= 4;
congvu	0:24041b847eb5	3182	}
congvu	0:24041b847eb5	3183	} while (--clst);
congvu	0:24041b847eb5	3184	}
congvu	0:24041b847eb5	3185	fs->free_clust = n;
congvu	0:24041b847eb5	3186	if (fat == FS_FAT32) fs->fsi_flag = 1;
congvu	0:24041b847eb5	3187	*nclst = n;
congvu	0:24041b847eb5	3188	}
congvu	0:24041b847eb5	3189	}
congvu	0:24041b847eb5	3190	LEAVE_FF(fs, res);
congvu	0:24041b847eb5	3191	}
congvu	0:24041b847eb5	3192
congvu	0:24041b847eb5	3193
congvu	0:24041b847eb5	3194
congvu	0:24041b847eb5	3195
congvu	0:24041b847eb5	3196	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3197	/* Truncate File */
congvu	0:24041b847eb5	3198	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3199
congvu	0:24041b847eb5	3200	FRESULT f_truncate (
congvu	0:24041b847eb5	3201	FIL fp / Pointer to the file object */
congvu	0:24041b847eb5	3202	)
congvu	0:24041b847eb5	3203	{
congvu	0:24041b847eb5	3204	FRESULT res;
congvu	0:24041b847eb5	3205	DWORD ncl;
congvu	0:24041b847eb5	3206
congvu	0:24041b847eb5	3207
congvu	0:24041b847eb5	3208	if (!fp) return FR_INVALID_OBJECT;
congvu	0:24041b847eb5	3209
congvu	0:24041b847eb5	3210	res = validate(fp); /* Check validity of the object */
congvu	0:24041b847eb5	3211	if (res == FR_OK) {
congvu	0:24041b847eb5	3212	if (fp->flag & FA__ERROR) { /* Check abort flag */
congvu	0:24041b847eb5	3213	res = FR_INT_ERR;
congvu	0:24041b847eb5	3214	} else {
congvu	0:24041b847eb5	3215	if (!(fp->flag & FA_WRITE)) /* Check access mode */
congvu	0:24041b847eb5	3216	res = FR_DENIED;
congvu	0:24041b847eb5	3217	}
congvu	0:24041b847eb5	3218	}
congvu	0:24041b847eb5	3219	if (res == FR_OK) {
congvu	0:24041b847eb5	3220	if (fp->fsize > fp->fptr) {
congvu	0:24041b847eb5	3221	fp->fsize = fp->fptr; /* Set file size to current R/W point */
congvu	0:24041b847eb5	3222	fp->flag \|= FA__WRITTEN;
congvu	0:24041b847eb5	3223	if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
congvu	0:24041b847eb5	3224	res = remove_chain(fp->fs, fp->sclust);
congvu	0:24041b847eb5	3225	fp->sclust = 0;
congvu	0:24041b847eb5	3226	} else { /* When truncate a part of the file, remove remaining clusters */
congvu	0:24041b847eb5	3227	ncl = get_fat(fp->fs, fp->clust);
congvu	0:24041b847eb5	3228	res = FR_OK;
congvu	0:24041b847eb5	3229	if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
congvu	0:24041b847eb5	3230	if (ncl == 1) res = FR_INT_ERR;
congvu	0:24041b847eb5	3231	if (res == FR_OK && ncl < fp->fs->n_fatent) {
congvu	0:24041b847eb5	3232	res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
congvu	0:24041b847eb5	3233	if (res == FR_OK) res = remove_chain(fp->fs, ncl);
congvu	0:24041b847eb5	3234	}
congvu	0:24041b847eb5	3235	}
congvu	0:24041b847eb5	3236	}
congvu	0:24041b847eb5	3237	if (res != FR_OK) fp->flag \|= FA__ERROR;
congvu	0:24041b847eb5	3238	}
congvu	0:24041b847eb5	3239
congvu	0:24041b847eb5	3240	LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	3241	}
congvu	0:24041b847eb5	3242
congvu	0:24041b847eb5	3243
congvu	0:24041b847eb5	3244
congvu	0:24041b847eb5	3245
congvu	0:24041b847eb5	3246	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3247	/* Delete a File or Directory */
congvu	0:24041b847eb5	3248	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3249
congvu	0:24041b847eb5	3250	FRESULT f_unlink (
congvu	0:24041b847eb5	3251	const TCHAR path / Pointer to the file or directory path */
congvu	0:24041b847eb5	3252	)
congvu	0:24041b847eb5	3253	{
congvu	0:24041b847eb5	3254	FRESULT res;
congvu	0:24041b847eb5	3255	FATFS_DIR dj, sdj;
congvu	0:24041b847eb5	3256	BYTE *dir;
congvu	0:24041b847eb5	3257	DWORD dclst;
congvu	0:24041b847eb5	3258	DEF_NAMEBUF;
congvu	0:24041b847eb5	3259
congvu	0:24041b847eb5	3260
congvu	0:24041b847eb5	3261	res = chk_mounted(&path, &dj.fs, 1);
congvu	0:24041b847eb5	3262	if (res == FR_OK) {
congvu	0:24041b847eb5	3263	INIT_BUF(dj);
congvu	0:24041b847eb5	3264	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	3265	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
congvu	0:24041b847eb5	3266	res = FR_INVALID_NAME; /* Cannot remove dot entry */
congvu	0:24041b847eb5	3267	#if _FS_LOCK
congvu	0:24041b847eb5	3268	if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
congvu	0:24041b847eb5	3269	#endif
congvu	0:24041b847eb5	3270	if (res == FR_OK) { /* The object is accessible */
congvu	0:24041b847eb5	3271	dir = dj.dir;
congvu	0:24041b847eb5	3272	if (!dir) {
congvu	0:24041b847eb5	3273	res = FR_INVALID_NAME; /* Cannot remove the start directory */
congvu	0:24041b847eb5	3274	} else {
congvu	0:24041b847eb5	3275	if (dir[DIR_Attr] & AM_RDO)
congvu	0:24041b847eb5	3276	res = FR_DENIED; /* Cannot remove R/O object */
congvu	0:24041b847eb5	3277	}
congvu	0:24041b847eb5	3278	dclst = ld_clust(dj.fs, dir);
congvu	0:24041b847eb5	3279	if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
congvu	0:24041b847eb5	3280	if (dclst < 2) {
congvu	0:24041b847eb5	3281	res = FR_INT_ERR;
congvu	0:24041b847eb5	3282	} else {
congvu	0:24041b847eb5	3283	mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Check if the sub-dir is empty or not */
congvu	0:24041b847eb5	3284	sdj.sclust = dclst;
congvu	0:24041b847eb5	3285	res = dir_sdi(&sdj, 2); /* Exclude dot entries */
congvu	0:24041b847eb5	3286	if (res == FR_OK) {
congvu	0:24041b847eb5	3287	res = dir_read(&sdj);
congvu	0:24041b847eb5	3288	if (res == FR_OK /* Not empty dir */
congvu	0:24041b847eb5	3289	#if _FS_RPATH
congvu	0:24041b847eb5	3290	\|\| dclst == dj.fs->cdir /* Current dir */
congvu	0:24041b847eb5	3291	#endif
congvu	0:24041b847eb5	3292	) res = FR_DENIED;
congvu	0:24041b847eb5	3293	if (res == FR_NO_FILE) res = FR_OK; /* Empty */
congvu	0:24041b847eb5	3294	}
congvu	0:24041b847eb5	3295	}
congvu	0:24041b847eb5	3296	}
congvu	0:24041b847eb5	3297	if (res == FR_OK) {
congvu	0:24041b847eb5	3298	res = dir_remove(&dj); /* Remove the directory entry */
congvu	0:24041b847eb5	3299	if (res == FR_OK) {
congvu	0:24041b847eb5	3300	if (dclst) /* Remove the cluster chain if exist */
congvu	0:24041b847eb5	3301	res = remove_chain(dj.fs, dclst);
congvu	0:24041b847eb5	3302	if (res == FR_OK) res = sync(dj.fs);
congvu	0:24041b847eb5	3303	}
congvu	0:24041b847eb5	3304	}
congvu	0:24041b847eb5	3305	}
congvu	0:24041b847eb5	3306	FREE_BUF();
congvu	0:24041b847eb5	3307	}
congvu	0:24041b847eb5	3308	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	3309	}
congvu	0:24041b847eb5	3310
congvu	0:24041b847eb5	3311
congvu	0:24041b847eb5	3312
congvu	0:24041b847eb5	3313
congvu	0:24041b847eb5	3314	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3315	/* Create a Directory */
congvu	0:24041b847eb5	3316	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3317
congvu	0:24041b847eb5	3318	FRESULT f_mkdir (
congvu	0:24041b847eb5	3319	const TCHAR path / Pointer to the directory path */
congvu	0:24041b847eb5	3320	)
congvu	0:24041b847eb5	3321	{
congvu	0:24041b847eb5	3322	FRESULT res;
congvu	0:24041b847eb5	3323	FATFS_DIR dj;
congvu	0:24041b847eb5	3324	BYTE *dir, n;
congvu	0:24041b847eb5	3325	DWORD dsc, dcl, pcl, tim = get_fattime();
congvu	0:24041b847eb5	3326	DEF_NAMEBUF;
congvu	0:24041b847eb5	3327
congvu	0:24041b847eb5	3328
congvu	0:24041b847eb5	3329	res = chk_mounted(&path, &dj.fs, 1);
congvu	0:24041b847eb5	3330	if (res == FR_OK) {
congvu	0:24041b847eb5	3331	INIT_BUF(dj);
congvu	0:24041b847eb5	3332	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	3333	if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
congvu	0:24041b847eb5	3334	if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
congvu	0:24041b847eb5	3335	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3336	if (res == FR_NO_FILE) { /* Can create a new directory */
congvu	0:24041b847eb5	3337	dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
congvu	0:24041b847eb5	3338	res = FR_OK;
congvu	0:24041b847eb5	3339	if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
congvu	0:24041b847eb5	3340	if (dcl == 1) res = FR_INT_ERR;
congvu	0:24041b847eb5	3341	if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
congvu	0:24041b847eb5	3342	if (res == FR_OK) /* Flush FAT */
congvu	0:24041b847eb5	3343	res = move_window(dj.fs, 0);
congvu	0:24041b847eb5	3344	if (res == FR_OK) { /* Initialize the new directory table */
congvu	0:24041b847eb5	3345	dsc = clust2sect(dj.fs, dcl);
congvu	0:24041b847eb5	3346	dir = dj.fs->win;
congvu	0:24041b847eb5	3347	mem_set(dir, 0, SS(dj.fs));
congvu	0:24041b847eb5	3348	mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
congvu	0:24041b847eb5	3349	dir[DIR_Name] = '.';
congvu	0:24041b847eb5	3350	dir[DIR_Attr] = AM_DIR;
congvu	0:24041b847eb5	3351	ST_DWORD(dir+DIR_WrtTime, tim);
congvu	0:24041b847eb5	3352	st_clust(dir, dcl);
congvu	0:24041b847eb5	3353	mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
congvu	0:24041b847eb5	3354	dir[33] = '.'; pcl = dj.sclust;
congvu	0:24041b847eb5	3355	if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
congvu	0:24041b847eb5	3356	pcl = 0;
congvu	0:24041b847eb5	3357	st_clust(dir+SZ_DIR, pcl);
congvu	0:24041b847eb5	3358	for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
congvu	0:24041b847eb5	3359	dj.fs->winsect = dsc++;
congvu	0:24041b847eb5	3360	dj.fs->wflag = 1;
congvu	0:24041b847eb5	3361	res = move_window(dj.fs, 0);
congvu	0:24041b847eb5	3362	if (res != FR_OK) break;
congvu	0:24041b847eb5	3363	mem_set(dir, 0, SS(dj.fs));
congvu	0:24041b847eb5	3364	}
congvu	0:24041b847eb5	3365	}
congvu	0:24041b847eb5	3366	if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
congvu	0:24041b847eb5	3367	if (res != FR_OK) {
congvu	0:24041b847eb5	3368	remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
congvu	0:24041b847eb5	3369	} else {
congvu	0:24041b847eb5	3370	dir = dj.dir;
congvu	0:24041b847eb5	3371	dir[DIR_Attr] = AM_DIR; /* Attribute */
congvu	0:24041b847eb5	3372	ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
congvu	0:24041b847eb5	3373	st_clust(dir, dcl); /* Table start cluster */
congvu	0:24041b847eb5	3374	dj.fs->wflag = 1;
congvu	0:24041b847eb5	3375	res = sync(dj.fs);
congvu	0:24041b847eb5	3376	}
congvu	0:24041b847eb5	3377	}
congvu	0:24041b847eb5	3378	FREE_BUF();
congvu	0:24041b847eb5	3379	}
congvu	0:24041b847eb5	3380
congvu	0:24041b847eb5	3381	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	3382	}
congvu	0:24041b847eb5	3383
congvu	0:24041b847eb5	3384
congvu	0:24041b847eb5	3385
congvu	0:24041b847eb5	3386
congvu	0:24041b847eb5	3387	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3388	/* Change Attribute */
congvu	0:24041b847eb5	3389	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3390
congvu	0:24041b847eb5	3391	FRESULT f_chmod (
congvu	0:24041b847eb5	3392	const TCHAR path, / Pointer to the file path */
congvu	0:24041b847eb5	3393	BYTE value, /* Attribute bits */
congvu	0:24041b847eb5	3394	BYTE mask /* Attribute mask to change */
congvu	0:24041b847eb5	3395	)
congvu	0:24041b847eb5	3396	{
congvu	0:24041b847eb5	3397	FRESULT res;
congvu	0:24041b847eb5	3398	FATFS_DIR dj;
congvu	0:24041b847eb5	3399	BYTE *dir;
congvu	0:24041b847eb5	3400	DEF_NAMEBUF;
congvu	0:24041b847eb5	3401
congvu	0:24041b847eb5	3402
congvu	0:24041b847eb5	3403	res = chk_mounted(&path, &dj.fs, 1);
congvu	0:24041b847eb5	3404	if (res == FR_OK) {
congvu	0:24041b847eb5	3405	INIT_BUF(dj);
congvu	0:24041b847eb5	3406	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	3407	FREE_BUF();
congvu	0:24041b847eb5	3408	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
congvu	0:24041b847eb5	3409	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3410	if (res == FR_OK) {
congvu	0:24041b847eb5	3411	dir = dj.dir;
congvu	0:24041b847eb5	3412	if (!dir) { /* Is it a root directory? */
congvu	0:24041b847eb5	3413	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3414	} else { /* File or sub directory */
congvu	0:24041b847eb5	3415	mask &= AM_RDO\|AM_HID\|AM_SYS\|AM_ARC; /* Valid attribute mask */
congvu	0:24041b847eb5	3416	dir[DIR_Attr] = (value & mask) \| (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
congvu	0:24041b847eb5	3417	dj.fs->wflag = 1;
congvu	0:24041b847eb5	3418	res = sync(dj.fs);
congvu	0:24041b847eb5	3419	}
congvu	0:24041b847eb5	3420	}
congvu	0:24041b847eb5	3421	}
congvu	0:24041b847eb5	3422
congvu	0:24041b847eb5	3423	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	3424	}
congvu	0:24041b847eb5	3425
congvu	0:24041b847eb5	3426
congvu	0:24041b847eb5	3427
congvu	0:24041b847eb5	3428
congvu	0:24041b847eb5	3429	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3430	/* Change Timestamp */
congvu	0:24041b847eb5	3431	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3432
congvu	0:24041b847eb5	3433	FRESULT f_utime (
congvu	0:24041b847eb5	3434	const TCHAR path, / Pointer to the file/directory name */
congvu	0:24041b847eb5	3435	const FILINFO fno / Pointer to the time stamp to be set */
congvu	0:24041b847eb5	3436	)
congvu	0:24041b847eb5	3437	{
congvu	0:24041b847eb5	3438	FRESULT res;
congvu	0:24041b847eb5	3439	FATFS_DIR dj;
congvu	0:24041b847eb5	3440	BYTE *dir;
congvu	0:24041b847eb5	3441	DEF_NAMEBUF;
congvu	0:24041b847eb5	3442
congvu	0:24041b847eb5	3443
congvu	0:24041b847eb5	3444	res = chk_mounted(&path, &dj.fs, 1);
congvu	0:24041b847eb5	3445	if (res == FR_OK) {
congvu	0:24041b847eb5	3446	INIT_BUF(dj);
congvu	0:24041b847eb5	3447	res = follow_path(&dj, path); /* Follow the file path */
congvu	0:24041b847eb5	3448	FREE_BUF();
congvu	0:24041b847eb5	3449	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
congvu	0:24041b847eb5	3450	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3451	if (res == FR_OK) {
congvu	0:24041b847eb5	3452	dir = dj.dir;
congvu	0:24041b847eb5	3453	if (!dir) { /* Root directory */
congvu	0:24041b847eb5	3454	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3455	} else { /* File or sub-directory */
congvu	0:24041b847eb5	3456	ST_WORD(dir+DIR_WrtTime, fno->ftime);
congvu	0:24041b847eb5	3457	ST_WORD(dir+DIR_WrtDate, fno->fdate);
congvu	0:24041b847eb5	3458	dj.fs->wflag = 1;
congvu	0:24041b847eb5	3459	res = sync(dj.fs);
congvu	0:24041b847eb5	3460	}
congvu	0:24041b847eb5	3461	}
congvu	0:24041b847eb5	3462	}
congvu	0:24041b847eb5	3463
congvu	0:24041b847eb5	3464	LEAVE_FF(dj.fs, res);
congvu	0:24041b847eb5	3465	}
congvu	0:24041b847eb5	3466
congvu	0:24041b847eb5	3467
congvu	0:24041b847eb5	3468
congvu	0:24041b847eb5	3469
congvu	0:24041b847eb5	3470	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3471	/* Rename File/Directory */
congvu	0:24041b847eb5	3472	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3473
congvu	0:24041b847eb5	3474	FRESULT f_rename (
congvu	0:24041b847eb5	3475	const TCHAR path_old, / Pointer to the old name */
congvu	0:24041b847eb5	3476	const TCHAR path_new / Pointer to the new name */
congvu	0:24041b847eb5	3477	)
congvu	0:24041b847eb5	3478	{
congvu	0:24041b847eb5	3479	FRESULT res;
congvu	0:24041b847eb5	3480	FATFS_DIR djo, djn;
congvu	0:24041b847eb5	3481	BYTE buf[21], *dir;
congvu	0:24041b847eb5	3482	DWORD dw;
congvu	0:24041b847eb5	3483	DEF_NAMEBUF;
congvu	0:24041b847eb5	3484
congvu	0:24041b847eb5	3485
congvu	0:24041b847eb5	3486	res = chk_mounted(&path_old, &djo.fs, 1);
congvu	0:24041b847eb5	3487	if (res == FR_OK) {
congvu	0:24041b847eb5	3488	djn.fs = djo.fs;
congvu	0:24041b847eb5	3489	INIT_BUF(djo);
congvu	0:24041b847eb5	3490	res = follow_path(&djo, path_old); /* Check old object */
congvu	0:24041b847eb5	3491	if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
congvu	0:24041b847eb5	3492	res = FR_INVALID_NAME;
congvu	0:24041b847eb5	3493	#if _FS_LOCK
congvu	0:24041b847eb5	3494	if (res == FR_OK) res = chk_lock(&djo, 2);
congvu	0:24041b847eb5	3495	#endif
congvu	0:24041b847eb5	3496	if (res == FR_OK) { /* Old object is found */
congvu	0:24041b847eb5	3497	if (!djo.dir) { /* Is root dir? */
congvu	0:24041b847eb5	3498	res = FR_NO_FILE;
congvu	0:24041b847eb5	3499	} else {
congvu	0:24041b847eb5	3500	mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
congvu	0:24041b847eb5	3501	mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Check new object */
congvu	0:24041b847eb5	3502	res = follow_path(&djn, path_new);
congvu	0:24041b847eb5	3503	if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
congvu	0:24041b847eb5	3504	if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
congvu	0:24041b847eb5	3505	/* Start critical section that an interruption or error can cause cross-link */
congvu	0:24041b847eb5	3506	res = dir_register(&djn); /* Register the new entry */
congvu	0:24041b847eb5	3507	if (res == FR_OK) {
congvu	0:24041b847eb5	3508	dir = djn.dir; /* Copy object information except for name */
congvu	0:24041b847eb5	3509	mem_cpy(dir+13, buf+2, 19);
congvu	0:24041b847eb5	3510	dir[DIR_Attr] = buf[0] \| AM_ARC;
congvu	0:24041b847eb5	3511	djo.fs->wflag = 1;
congvu	0:24041b847eb5	3512	if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
congvu	0:24041b847eb5	3513	dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
congvu	0:24041b847eb5	3514	if (!dw) {
congvu	0:24041b847eb5	3515	res = FR_INT_ERR;
congvu	0:24041b847eb5	3516	} else {
congvu	0:24041b847eb5	3517	res = move_window(djo.fs, dw);
congvu	0:24041b847eb5	3518	dir = djo.fs->win+SZ_DIR; /* .. entry */
congvu	0:24041b847eb5	3519	if (res == FR_OK && dir[1] == '.') {
congvu	0:24041b847eb5	3520	dw = (djo.fs->fs_type == FS_FAT32 && djn.sclust == djo.fs->dirbase) ? 0 : djn.sclust;
congvu	0:24041b847eb5	3521	st_clust(dir, dw);
congvu	0:24041b847eb5	3522	djo.fs->wflag = 1;
congvu	0:24041b847eb5	3523	}
congvu	0:24041b847eb5	3524	}
congvu	0:24041b847eb5	3525	}
congvu	0:24041b847eb5	3526	if (res == FR_OK) {
congvu	0:24041b847eb5	3527	res = dir_remove(&djo); /* Remove old entry */
congvu	0:24041b847eb5	3528	if (res == FR_OK)
congvu	0:24041b847eb5	3529	res = sync(djo.fs);
congvu	0:24041b847eb5	3530	}
congvu	0:24041b847eb5	3531	}
congvu	0:24041b847eb5	3532	/* End critical section */
congvu	0:24041b847eb5	3533	}
congvu	0:24041b847eb5	3534	}
congvu	0:24041b847eb5	3535	}
congvu	0:24041b847eb5	3536	FREE_BUF();
congvu	0:24041b847eb5	3537	}
congvu	0:24041b847eb5	3538	LEAVE_FF(djo.fs, res);
congvu	0:24041b847eb5	3539	}
congvu	0:24041b847eb5	3540
congvu	0:24041b847eb5	3541	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	3542	#endif /* _FS_MINIMIZE == 0 */
congvu	0:24041b847eb5	3543	#endif /* _FS_MINIMIZE <= 1 */
congvu	0:24041b847eb5	3544	#endif /* _FS_MINIMIZE <= 2 */
congvu	0:24041b847eb5	3545
congvu	0:24041b847eb5	3546
congvu	0:24041b847eb5	3547
congvu	0:24041b847eb5	3548	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3549	/* Forward data to the stream directly (available on only tiny cfg) */
congvu	0:24041b847eb5	3550	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3551	#if _USE_FORWARD && _FS_TINY
congvu	0:24041b847eb5	3552
congvu	0:24041b847eb5	3553	FRESULT f_forward (
congvu	0:24041b847eb5	3554	FIL fp, / Pointer to the file object */
congvu	0:24041b847eb5	3555	UINT (func)(const BYTE,UINT), /* Pointer to the streaming function */
congvu	0:24041b847eb5	3556	UINT btr, /* Number of bytes to forward */
congvu	0:24041b847eb5	3557	UINT bf / Pointer to number of bytes forwarded */
congvu	0:24041b847eb5	3558	)
congvu	0:24041b847eb5	3559	{
congvu	0:24041b847eb5	3560	FRESULT res;
congvu	0:24041b847eb5	3561	DWORD remain, clst, sect;
congvu	0:24041b847eb5	3562	UINT rcnt;
congvu	0:24041b847eb5	3563	BYTE csect;
congvu	0:24041b847eb5	3564
congvu	0:24041b847eb5	3565
congvu	0:24041b847eb5	3566	bf = 0; / Clear transfer byte counter */
congvu	0:24041b847eb5	3567
congvu	0:24041b847eb5	3568	if (!fp) return FR_INVALID_OBJECT;
congvu	0:24041b847eb5	3569
congvu	0:24041b847eb5	3570	res = validate(fp); /* Check validity of the object */
congvu	0:24041b847eb5	3571	if (res != FR_OK) LEAVE_FF(fp->fs, res);
congvu	0:24041b847eb5	3572	if (fp->flag & FA__ERROR) /* Check error flag */
congvu	0:24041b847eb5	3573	LEAVE_FF(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	3574	if (!(fp->flag & FA_READ)) /* Check access mode */
congvu	0:24041b847eb5	3575	LEAVE_FF(fp->fs, FR_DENIED);
congvu	0:24041b847eb5	3576
congvu	0:24041b847eb5	3577	remain = fp->fsize - fp->fptr;
congvu	0:24041b847eb5	3578	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
congvu	0:24041b847eb5	3579
congvu	0:24041b847eb5	3580	for ( ; btr && (func)(0, 0); / Repeat until all data transferred or stream becomes busy */
congvu	0:24041b847eb5	3581	fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
congvu	0:24041b847eb5	3582	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
congvu	0:24041b847eb5	3583	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
congvu	0:24041b847eb5	3584	if (!csect) { /* On the cluster boundary? */
congvu	0:24041b847eb5	3585	clst = (fp->fptr == 0) ? /* On the top of the file? */
congvu	0:24041b847eb5	3586	fp->sclust : get_fat(fp->fs, fp->clust);
congvu	0:24041b847eb5	3587	if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	3588	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	3589	fp->clust = clst; /* Update current cluster */
congvu	0:24041b847eb5	3590	}
congvu	0:24041b847eb5	3591	}
congvu	0:24041b847eb5	3592	sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
congvu	0:24041b847eb5	3593	if (!sect) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	3594	sect += csect;
congvu	0:24041b847eb5	3595	if (move_window(fp->fs, sect)) /* Move sector window */
congvu	0:24041b847eb5	3596	ABORT(fp->fs, FR_DISK_ERR);
congvu	0:24041b847eb5	3597	fp->dsect = sect;
congvu	0:24041b847eb5	3598	rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
congvu	0:24041b847eb5	3599	if (rcnt > btr) rcnt = btr;
congvu	0:24041b847eb5	3600	rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
congvu	0:24041b847eb5	3601	if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
congvu	0:24041b847eb5	3602	}
congvu	0:24041b847eb5	3603
congvu	0:24041b847eb5	3604	LEAVE_FF(fp->fs, FR_OK);
congvu	0:24041b847eb5	3605	}
congvu	0:24041b847eb5	3606	#endif /* _USE_FORWARD */
congvu	0:24041b847eb5	3607
congvu	0:24041b847eb5	3608
congvu	0:24041b847eb5	3609
congvu	0:24041b847eb5	3610	#if _USE_MKFS && !_FS_READONLY
congvu	0:24041b847eb5	3611	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3612	/* Create File System on the Drive */
congvu	0:24041b847eb5	3613	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3614	#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
congvu	0:24041b847eb5	3615	#define N_FATS 1 /* Number of FAT copies (1 or 2) */
congvu	0:24041b847eb5	3616
congvu	0:24041b847eb5	3617
congvu	0:24041b847eb5	3618	FRESULT f_mkfs (
congvu	0:24041b847eb5	3619	BYTE drv, /* Logical drive number */
congvu	0:24041b847eb5	3620	BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
congvu	0:24041b847eb5	3621	UINT au /* Allocation unit size [bytes] */
congvu	0:24041b847eb5	3622	)
congvu	0:24041b847eb5	3623	{
congvu	0:24041b847eb5	3624	static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
congvu	0:24041b847eb5	3625	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
congvu	0:24041b847eb5	3626	BYTE fmt, md, sys, *tbl, pdrv, part;
congvu	0:24041b847eb5	3627	DWORD n_clst, vs, n, wsect;
congvu	0:24041b847eb5	3628	UINT i;
congvu	0:24041b847eb5	3629	DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
congvu	0:24041b847eb5	3630	DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
congvu	0:24041b847eb5	3631	FATFS *fs;
congvu	0:24041b847eb5	3632	DSTATUS stat;
congvu	0:24041b847eb5	3633
congvu	0:24041b847eb5	3634
congvu	0:24041b847eb5	3635	/* Check mounted drive and clear work area */
congvu	0:24041b847eb5	3636	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
congvu	0:24041b847eb5	3637	if (sfd > 1) return FR_INVALID_PARAMETER;
congvu	0:24041b847eb5	3638	if (au & (au - 1)) return FR_INVALID_PARAMETER;
congvu	0:24041b847eb5	3639	fs = FatFs[drv];
congvu	0:24041b847eb5	3640	if (!fs) return FR_NOT_ENABLED;
congvu	0:24041b847eb5	3641	fs->fs_type = 0;
congvu	0:24041b847eb5	3642	pdrv = LD2PD(drv); /* Physical drive */
congvu	0:24041b847eb5	3643	part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/
congvu	0:24041b847eb5	3644
congvu	0:24041b847eb5	3645	/* Get disk statics */
congvu	0:24041b847eb5	3646	stat = disk_initialize(pdrv);
congvu	0:24041b847eb5	3647	if (stat & STA_NOINIT) return FR_NOT_READY;
congvu	0:24041b847eb5	3648	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
congvu	0:24041b847eb5	3649	#if _MAX_SS != 512 /* Get disk sector size */
congvu	0:24041b847eb5	3650	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK \|\| SS(fs) > _MAX_SS)
congvu	0:24041b847eb5	3651	return FR_DISK_ERR;
congvu	0:24041b847eb5	3652	#endif
congvu	0:24041b847eb5	3653	if (_MULTI_PARTITION && part) {
congvu	0:24041b847eb5	3654	/* Get partition information from partition table in the MBR */
congvu	0:24041b847eb5	3655	if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
congvu	0:24041b847eb5	3656	if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
congvu	0:24041b847eb5	3657	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
congvu	0:24041b847eb5	3658	if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
congvu	0:24041b847eb5	3659	b_vol = LD_DWORD(tbl+8); /* Volume start sector */
congvu	0:24041b847eb5	3660	n_vol = LD_DWORD(tbl+12); /* Volume size */
congvu	0:24041b847eb5	3661	} else {
congvu	0:24041b847eb5	3662	/* Create a partition in this function */
congvu	0:24041b847eb5	3663	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK \|\| n_vol < 128)
congvu	0:24041b847eb5	3664	return FR_DISK_ERR;
congvu	0:24041b847eb5	3665	b_vol = (sfd) ? 0 : 63; /* Volume start sector */
congvu	0:24041b847eb5	3666	n_vol -= b_vol; /* Volume size */
congvu	0:24041b847eb5	3667	}
congvu	0:24041b847eb5	3668
congvu	0:24041b847eb5	3669	if (!au) { /* AU auto selection */
congvu	0:24041b847eb5	3670	vs = n_vol / (2000 / (SS(fs) / 512));
congvu	0:24041b847eb5	3671	for (i = 0; vs < vst[i]; i++) ;
congvu	0:24041b847eb5	3672	au = cst[i];
congvu	0:24041b847eb5	3673	}
congvu	0:24041b847eb5	3674	au /= SS(fs); /* Number of sectors per cluster */
congvu	0:24041b847eb5	3675	if (au == 0) au = 1;
congvu	0:24041b847eb5	3676	if (au > 128) au = 128;
congvu	0:24041b847eb5	3677
congvu	0:24041b847eb5	3678	/* Pre-compute number of clusters and FAT sub-type */
congvu	0:24041b847eb5	3679	n_clst = n_vol / au;
congvu	0:24041b847eb5	3680	fmt = FS_FAT12;
congvu	0:24041b847eb5	3681	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
congvu	0:24041b847eb5	3682	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
congvu	0:24041b847eb5	3683
congvu	0:24041b847eb5	3684	/* Determine offset and size of FAT structure */
congvu	0:24041b847eb5	3685	if (fmt == FS_FAT32) {
congvu	0:24041b847eb5	3686	n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
congvu	0:24041b847eb5	3687	n_rsv = 32;
congvu	0:24041b847eb5	3688	n_dir = 0;
congvu	0:24041b847eb5	3689	} else {
congvu	0:24041b847eb5	3690	n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
congvu	0:24041b847eb5	3691	n_fat = (n_fat + SS(fs) - 1) / SS(fs);
congvu	0:24041b847eb5	3692	n_rsv = 1;
congvu	0:24041b847eb5	3693	n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
congvu	0:24041b847eb5	3694	}
congvu	0:24041b847eb5	3695	b_fat = b_vol + n_rsv; /* FAT area start sector */
congvu	0:24041b847eb5	3696	b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
congvu	0:24041b847eb5	3697	b_data = b_dir + n_dir; /* Data area start sector */
congvu	0:24041b847eb5	3698	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
congvu	0:24041b847eb5	3699
congvu	0:24041b847eb5	3700	/* Align data start sector to erase block boundary (for flash memory media) */
congvu	0:24041b847eb5	3701	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK \|\| !n \|\| n > 32768) n = 1;
congvu	0:24041b847eb5	3702	n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
congvu	0:24041b847eb5	3703	n = (n - b_data) / N_FATS;
congvu	0:24041b847eb5	3704	if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
congvu	0:24041b847eb5	3705	n_rsv += n;
congvu	0:24041b847eb5	3706	b_fat += n;
congvu	0:24041b847eb5	3707	} else { /* FAT12/16: Expand FAT size */
congvu	0:24041b847eb5	3708	n_fat += n;
congvu	0:24041b847eb5	3709	}
congvu	0:24041b847eb5	3710
congvu	0:24041b847eb5	3711	/* Determine number of clusters and final check of validity of the FAT sub-type */
congvu	0:24041b847eb5	3712	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
congvu	0:24041b847eb5	3713	if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
congvu	0:24041b847eb5	3714	\|\| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
congvu	0:24041b847eb5	3715	return FR_MKFS_ABORTED;
congvu	0:24041b847eb5	3716
congvu	0:24041b847eb5	3717	switch (fmt) { /* Determine system ID for partition table */
congvu	0:24041b847eb5	3718	case FS_FAT12: sys = 0x01; break;
congvu	0:24041b847eb5	3719	case FS_FAT16: sys = (n_vol < 0x10000) ? 0x04 : 0x06; break;
congvu	0:24041b847eb5	3720	default: sys = 0x0C;
congvu	0:24041b847eb5	3721	}
congvu	0:24041b847eb5	3722
congvu	0:24041b847eb5	3723	if (_MULTI_PARTITION && part) {
congvu	0:24041b847eb5	3724	/* Update system ID in the partition table */
congvu	0:24041b847eb5	3725	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
congvu	0:24041b847eb5	3726	tbl[4] = sys;
congvu	0:24041b847eb5	3727	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
congvu	0:24041b847eb5	3728	md = 0xF8;
congvu	0:24041b847eb5	3729	} else {
congvu	0:24041b847eb5	3730	if (sfd) { /* No partition table (SFD) */
congvu	0:24041b847eb5	3731	md = 0xF0;
congvu	0:24041b847eb5	3732	} else { /* Create partition table (FDISK) */
congvu	0:24041b847eb5	3733	mem_set(fs->win, 0, SS(fs));
congvu	0:24041b847eb5	3734	tbl = fs->win+MBR_Table; /* Create partition table for single partition in the drive */
congvu	0:24041b847eb5	3735	tbl[1] = 1; /* Partition start head */
congvu	0:24041b847eb5	3736	tbl[2] = 1; /* Partition start sector */
congvu	0:24041b847eb5	3737	tbl[3] = 0; /* Partition start cylinder */
congvu	0:24041b847eb5	3738	tbl[4] = sys; /* System type */
congvu	0:24041b847eb5	3739	tbl[5] = 254; /* Partition end head */
congvu	0:24041b847eb5	3740	n = (b_vol + n_vol) / 63 / 255;
congvu	0:24041b847eb5	3741	tbl[6] = (BYTE)((n >> 2) \| 63); /* Partition end sector */
congvu	0:24041b847eb5	3742	tbl[7] = (BYTE)n; /* End cylinder */
congvu	0:24041b847eb5	3743	ST_DWORD(tbl+8, 63); /* Partition start in LBA */
congvu	0:24041b847eb5	3744	ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
congvu	0:24041b847eb5	3745	ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
congvu	0:24041b847eb5	3746	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */
congvu	0:24041b847eb5	3747	return FR_DISK_ERR;
congvu	0:24041b847eb5	3748	md = 0xF8;
congvu	0:24041b847eb5	3749	}
congvu	0:24041b847eb5	3750	}
congvu	0:24041b847eb5	3751
congvu	0:24041b847eb5	3752	/* Create BPB in the VBR */
congvu	0:24041b847eb5	3753	tbl = fs->win; /* Clear sector */
congvu	0:24041b847eb5	3754	mem_set(tbl, 0, SS(fs));
congvu	0:24041b847eb5	3755	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
congvu	0:24041b847eb5	3756	i = SS(fs); /* Sector size */
congvu	0:24041b847eb5	3757	ST_WORD(tbl+BPB_BytsPerSec, i);
congvu	0:24041b847eb5	3758	tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
congvu	0:24041b847eb5	3759	ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
congvu	0:24041b847eb5	3760	tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
congvu	0:24041b847eb5	3761	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
congvu	0:24041b847eb5	3762	ST_WORD(tbl+BPB_RootEntCnt, i);
congvu	0:24041b847eb5	3763	if (n_vol < 0x10000) { /* Number of total sectors */
congvu	0:24041b847eb5	3764	ST_WORD(tbl+BPB_TotSec16, n_vol);
congvu	0:24041b847eb5	3765	} else {
congvu	0:24041b847eb5	3766	ST_DWORD(tbl+BPB_TotSec32, n_vol);
congvu	0:24041b847eb5	3767	}
congvu	0:24041b847eb5	3768	tbl[BPB_Media] = md; /* Media descriptor */
congvu	0:24041b847eb5	3769	ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
congvu	0:24041b847eb5	3770	ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
congvu	0:24041b847eb5	3771	ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
congvu	0:24041b847eb5	3772	n = get_fattime(); /* Use current time as VSN */
congvu	0:24041b847eb5	3773	if (fmt == FS_FAT32) {
congvu	0:24041b847eb5	3774	ST_DWORD(tbl+BS_VolID32, n); /* VSN */
congvu	0:24041b847eb5	3775	ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
congvu	0:24041b847eb5	3776	ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
congvu	0:24041b847eb5	3777	ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
congvu	0:24041b847eb5	3778	ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
congvu	0:24041b847eb5	3779	tbl[BS_DrvNum32] = 0x80; /* Drive number */
congvu	0:24041b847eb5	3780	tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
congvu	0:24041b847eb5	3781	mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
congvu	0:24041b847eb5	3782	} else {
congvu	0:24041b847eb5	3783	ST_DWORD(tbl+BS_VolID, n); /* VSN */
congvu	0:24041b847eb5	3784	ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
congvu	0:24041b847eb5	3785	tbl[BS_DrvNum] = 0x80; /* Drive number */
congvu	0:24041b847eb5	3786	tbl[BS_BootSig] = 0x29; /* Extended boot signature */
congvu	0:24041b847eb5	3787	mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
congvu	0:24041b847eb5	3788	}
congvu	0:24041b847eb5	3789	ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
congvu	0:24041b847eb5	3790	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
congvu	0:24041b847eb5	3791	return FR_DISK_ERR;
congvu	0:24041b847eb5	3792	if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
congvu	0:24041b847eb5	3793	disk_write(pdrv, tbl, b_vol + 6, 1);
congvu	0:24041b847eb5	3794
congvu	0:24041b847eb5	3795	/* Initialize FAT area */
congvu	0:24041b847eb5	3796	wsect = b_fat;
congvu	0:24041b847eb5	3797	for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
congvu	0:24041b847eb5	3798	mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
congvu	0:24041b847eb5	3799	n = md; /* Media descriptor byte */
congvu	0:24041b847eb5	3800	if (fmt != FS_FAT32) {
congvu	0:24041b847eb5	3801	n \|= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
congvu	0:24041b847eb5	3802	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
congvu	0:24041b847eb5	3803	} else {
congvu	0:24041b847eb5	3804	n \|= 0xFFFFFF00;
congvu	0:24041b847eb5	3805	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
congvu	0:24041b847eb5	3806	ST_DWORD(tbl+4, 0xFFFFFFFF);
congvu	0:24041b847eb5	3807	ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
congvu	0:24041b847eb5	3808	}
congvu	0:24041b847eb5	3809	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
congvu	0:24041b847eb5	3810	return FR_DISK_ERR;
congvu	0:24041b847eb5	3811	mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
congvu	0:24041b847eb5	3812	for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
congvu	0:24041b847eb5	3813	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
congvu	0:24041b847eb5	3814	return FR_DISK_ERR;
congvu	0:24041b847eb5	3815	}
congvu	0:24041b847eb5	3816	}
congvu	0:24041b847eb5	3817
congvu	0:24041b847eb5	3818	/* Initialize root directory */
congvu	0:24041b847eb5	3819	i = (fmt == FS_FAT32) ? au : n_dir;
congvu	0:24041b847eb5	3820	do {
congvu	0:24041b847eb5	3821	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
congvu	0:24041b847eb5	3822	return FR_DISK_ERR;
congvu	0:24041b847eb5	3823	} while (--i);
congvu	0:24041b847eb5	3824
congvu	0:24041b847eb5	3825	#if _USE_ERASE /* Erase data area if needed */
congvu	0:24041b847eb5	3826	{
congvu	0:24041b847eb5	3827	DWORD eb[2];
congvu	0:24041b847eb5	3828
congvu	0:24041b847eb5	3829	eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
congvu	0:24041b847eb5	3830	disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb);
congvu	0:24041b847eb5	3831	}
congvu	0:24041b847eb5	3832	#endif
congvu	0:24041b847eb5	3833
congvu	0:24041b847eb5	3834	/* Create FSInfo if needed */
congvu	0:24041b847eb5	3835	if (fmt == FS_FAT32) {
congvu	0:24041b847eb5	3836	ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
congvu	0:24041b847eb5	3837	ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
congvu	0:24041b847eb5	3838	ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
congvu	0:24041b847eb5	3839	ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
congvu	0:24041b847eb5	3840	ST_WORD(tbl+BS_55AA, 0xAA55);
congvu	0:24041b847eb5	3841	disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
congvu	0:24041b847eb5	3842	disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
congvu	0:24041b847eb5	3843	}
congvu	0:24041b847eb5	3844
congvu	0:24041b847eb5	3845	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
congvu	0:24041b847eb5	3846	}
congvu	0:24041b847eb5	3847
congvu	0:24041b847eb5	3848
congvu	0:24041b847eb5	3849	#if _MULTI_PARTITION == 2
congvu	0:24041b847eb5	3850	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3851	/* Divide Physical Drive */
congvu	0:24041b847eb5	3852	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3853
congvu	0:24041b847eb5	3854	FRESULT f_fdisk (
congvu	0:24041b847eb5	3855	BYTE pdrv, /* Physical drive number */
congvu	0:24041b847eb5	3856	const DWORD szt[], /* Pointer to the size table for each partitions */
congvu	0:24041b847eb5	3857	void* work /* Pointer to the working buffer */
congvu	0:24041b847eb5	3858	)
congvu	0:24041b847eb5	3859	{
congvu	0:24041b847eb5	3860	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
congvu	0:24041b847eb5	3861	BYTE s_hd, e_hd, p, buf = (BYTE*)work;
congvu	0:24041b847eb5	3862	DSTATUS stat;
congvu	0:24041b847eb5	3863	DWORD sz_disk, sz_part, s_part;
congvu	0:24041b847eb5	3864
congvu	0:24041b847eb5	3865
congvu	0:24041b847eb5	3866	stat = disk_initialize(pdrv);
congvu	0:24041b847eb5	3867	if (stat & STA_NOINIT) return FR_NOT_READY;
congvu	0:24041b847eb5	3868	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
congvu	0:24041b847eb5	3869	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
congvu	0:24041b847eb5	3870
congvu	0:24041b847eb5	3871	/* Determine CHS in the table regardless of the drive geometry */
congvu	0:24041b847eb5	3872	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
congvu	0:24041b847eb5	3873	if (n == 256) n--;
congvu	0:24041b847eb5	3874	e_hd = n - 1;
congvu	0:24041b847eb5	3875	sz_cyl = 63 * n;
congvu	0:24041b847eb5	3876	tot_cyl = sz_disk / sz_cyl;
congvu	0:24041b847eb5	3877
congvu	0:24041b847eb5	3878	/* Create partition table */
congvu	0:24041b847eb5	3879	mem_set(buf, 0, _MAX_SS);
congvu	0:24041b847eb5	3880	p = buf + MBR_Table; b_cyl = 0;
congvu	0:24041b847eb5	3881	for (i = 0; i < 4; i++, p += SZ_PTE) {
congvu	0:24041b847eb5	3882	p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
congvu	0:24041b847eb5	3883	if (!p_cyl) continue;
congvu	0:24041b847eb5	3884	s_part = (DWORD)sz_cyl * b_cyl;
congvu	0:24041b847eb5	3885	sz_part = (DWORD)sz_cyl * p_cyl;
congvu	0:24041b847eb5	3886	if (i == 0) { /* Exclude first track of cylinder 0 */
congvu	0:24041b847eb5	3887	s_hd = 1;
congvu	0:24041b847eb5	3888	s_part += 63; sz_part -= 63;
congvu	0:24041b847eb5	3889	} else {
congvu	0:24041b847eb5	3890	s_hd = 0;
congvu	0:24041b847eb5	3891	}
congvu	0:24041b847eb5	3892	e_cyl = b_cyl + p_cyl - 1;
congvu	0:24041b847eb5	3893	if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
congvu	0:24041b847eb5	3894
congvu	0:24041b847eb5	3895	/* Set partition table */
congvu	0:24041b847eb5	3896	p[1] = s_hd; /* Start head */
congvu	0:24041b847eb5	3897	p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
congvu	0:24041b847eb5	3898	p[3] = (BYTE)b_cyl; /* Start cylinder */
congvu	0:24041b847eb5	3899	p[4] = 0x06; /* System type (temporary setting) */
congvu	0:24041b847eb5	3900	p[5] = e_hd; /* End head */
congvu	0:24041b847eb5	3901	p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
congvu	0:24041b847eb5	3902	p[7] = (BYTE)e_cyl; /* End cylinder */
congvu	0:24041b847eb5	3903	ST_DWORD(p + 8, s_part); /* Start sector in LBA */
congvu	0:24041b847eb5	3904	ST_DWORD(p + 12, sz_part); /* Partition size */
congvu	0:24041b847eb5	3905
congvu	0:24041b847eb5	3906	/* Next partition */
congvu	0:24041b847eb5	3907	b_cyl += p_cyl;
congvu	0:24041b847eb5	3908	}
congvu	0:24041b847eb5	3909	ST_WORD(p, 0xAA55);
congvu	0:24041b847eb5	3910
congvu	0:24041b847eb5	3911	/* Write it to the MBR */
congvu	0:24041b847eb5	3912	return (disk_write(pdrv, buf, 0, 1) \|\| disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK;
congvu	0:24041b847eb5	3913	}
congvu	0:24041b847eb5	3914
congvu	0:24041b847eb5	3915
congvu	0:24041b847eb5	3916	#endif /* _MULTI_PARTITION == 2 */
congvu	0:24041b847eb5	3917	#endif /* _USE_MKFS && !_FS_READONLY */
congvu	0:24041b847eb5	3918
congvu	0:24041b847eb5	3919
congvu	0:24041b847eb5	3920
congvu	0:24041b847eb5	3921
congvu	0:24041b847eb5	3922	#if _USE_STRFUNC
congvu	0:24041b847eb5	3923	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3924	/* Get a string from the file */
congvu	0:24041b847eb5	3925	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3926	TCHAR* f_gets (
congvu	0:24041b847eb5	3927	TCHAR* buff, /* Pointer to the string buffer to read */
congvu	0:24041b847eb5	3928	int len, /* Size of string buffer (characters) */
congvu	0:24041b847eb5	3929	FIL* fil /* Pointer to the file object */
congvu	0:24041b847eb5	3930	)
congvu	0:24041b847eb5	3931	{
congvu	0:24041b847eb5	3932	int n = 0;
congvu	0:24041b847eb5	3933	TCHAR c, *p = buff;
congvu	0:24041b847eb5	3934	BYTE s[2];
congvu	0:24041b847eb5	3935	UINT rc;
congvu	0:24041b847eb5	3936
congvu	0:24041b847eb5	3937
congvu	0:24041b847eb5	3938	while (n < len - 1) { /* Read bytes until buffer gets filled */
congvu	0:24041b847eb5	3939	f_read(fil, s, 1, &rc);
congvu	0:24041b847eb5	3940	if (rc != 1) break; /* Break on EOF or error */
congvu	0:24041b847eb5	3941	c = s[0];
congvu	0:24041b847eb5	3942	#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
congvu	0:24041b847eb5	3943	if (c >= 0x80) {
congvu	0:24041b847eb5	3944	if (c < 0xC0) continue; /* Skip stray trailer */
congvu	0:24041b847eb5	3945	if (c < 0xE0) { /* Two-byte sequence */
congvu	0:24041b847eb5	3946	f_read(fil, s, 1, &rc);
congvu	0:24041b847eb5	3947	if (rc != 1) break;
congvu	0:24041b847eb5	3948	c = ((c & 0x1F) << 6) \| (s[0] & 0x3F);
congvu	0:24041b847eb5	3949	if (c < 0x80) c = '?';
congvu	0:24041b847eb5	3950	} else {
congvu	0:24041b847eb5	3951	if (c < 0xF0) { /* Three-byte sequence */
congvu	0:24041b847eb5	3952	f_read(fil, s, 2, &rc);
congvu	0:24041b847eb5	3953	if (rc != 2) break;
congvu	0:24041b847eb5	3954	c = (c << 12) \| ((s[0] & 0x3F) << 6) \| (s[1] & 0x3F);
congvu	0:24041b847eb5	3955	if (c < 0x800) c = '?';
congvu	0:24041b847eb5	3956	} else { /* Reject four-byte sequence */
congvu	0:24041b847eb5	3957	c = '?';
congvu	0:24041b847eb5	3958	}
congvu	0:24041b847eb5	3959	}
congvu	0:24041b847eb5	3960	}
congvu	0:24041b847eb5	3961	#endif
congvu	0:24041b847eb5	3962	#if _USE_STRFUNC >= 2
congvu	0:24041b847eb5	3963	if (c == '\r') continue; /* Strip '\r' */
congvu	0:24041b847eb5	3964	#endif
congvu	0:24041b847eb5	3965	*p++ = c;
congvu	0:24041b847eb5	3966	n++;
congvu	0:24041b847eb5	3967	if (c == '\n') break; /* Break on EOL */
congvu	0:24041b847eb5	3968	}
congvu	0:24041b847eb5	3969	*p = 0;
congvu	0:24041b847eb5	3970	return n ? buff : 0; /* When no data read (eof or error), return with error. */
congvu	0:24041b847eb5	3971	}
congvu	0:24041b847eb5	3972
congvu	0:24041b847eb5	3973
congvu	0:24041b847eb5	3974
congvu	0:24041b847eb5	3975	#if !_FS_READONLY
congvu	0:24041b847eb5	3976	#include <stdarg.h>
congvu	0:24041b847eb5	3977	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3978	/* Put a character to the file */
congvu	0:24041b847eb5	3979	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	3980	int f_putc (
congvu	0:24041b847eb5	3981	TCHAR c, /* A character to be output */
congvu	0:24041b847eb5	3982	FIL* fil /* Pointer to the file object */
congvu	0:24041b847eb5	3983	)
congvu	0:24041b847eb5	3984	{
congvu	0:24041b847eb5	3985	UINT bw, btw;
congvu	0:24041b847eb5	3986	BYTE s[3];
congvu	0:24041b847eb5	3987
congvu	0:24041b847eb5	3988
congvu	0:24041b847eb5	3989	#if _USE_STRFUNC >= 2
congvu	0:24041b847eb5	3990	if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
congvu	0:24041b847eb5	3991	#endif
congvu	0:24041b847eb5	3992
congvu	0:24041b847eb5	3993	#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
congvu	0:24041b847eb5	3994	if (c < 0x80) { /* 7-bit */
congvu	0:24041b847eb5	3995	s[0] = (BYTE)c;
congvu	0:24041b847eb5	3996	btw = 1;
congvu	0:24041b847eb5	3997	} else {
congvu	0:24041b847eb5	3998	if (c < 0x800) { /* 11-bit */
congvu	0:24041b847eb5	3999	s[0] = (BYTE)(0xC0 \| (c >> 6));
congvu	0:24041b847eb5	4000	s[1] = (BYTE)(0x80 \| (c & 0x3F));
congvu	0:24041b847eb5	4001	btw = 2;
congvu	0:24041b847eb5	4002	} else { /* 16-bit */
congvu	0:24041b847eb5	4003	s[0] = (BYTE)(0xE0 \| (c >> 12));
congvu	0:24041b847eb5	4004	s[1] = (BYTE)(0x80 \| ((c >> 6) & 0x3F));
congvu	0:24041b847eb5	4005	s[2] = (BYTE)(0x80 \| (c & 0x3F));
congvu	0:24041b847eb5	4006	btw = 3;
congvu	0:24041b847eb5	4007	}
congvu	0:24041b847eb5	4008	}
congvu	0:24041b847eb5	4009	#else /* Write the character without conversion */
congvu	0:24041b847eb5	4010	s[0] = (BYTE)c;
congvu	0:24041b847eb5	4011	btw = 1;
congvu	0:24041b847eb5	4012	#endif
congvu	0:24041b847eb5	4013	f_write(fil, s, btw, &bw); /* Write the char to the file */
congvu	0:24041b847eb5	4014	return (bw == btw) ? 1 : EOF; /* Return the result */
congvu	0:24041b847eb5	4015	}
congvu	0:24041b847eb5	4016
congvu	0:24041b847eb5	4017
congvu	0:24041b847eb5	4018
congvu	0:24041b847eb5	4019
congvu	0:24041b847eb5	4020	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	4021	/* Put a string to the file */
congvu	0:24041b847eb5	4022	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	4023	int f_puts (
congvu	0:24041b847eb5	4024	const TCHAR* str, /* Pointer to the string to be output */
congvu	0:24041b847eb5	4025	FIL* fil /* Pointer to the file object */
congvu	0:24041b847eb5	4026	)
congvu	0:24041b847eb5	4027	{
congvu	0:24041b847eb5	4028	int n;
congvu	0:24041b847eb5	4029
congvu	0:24041b847eb5	4030
congvu	0:24041b847eb5	4031	for (n = 0; *str; str++, n++) {
congvu	0:24041b847eb5	4032	if (f_putc(*str, fil) == EOF) return EOF;
congvu	0:24041b847eb5	4033	}
congvu	0:24041b847eb5	4034	return n;
congvu	0:24041b847eb5	4035	}
congvu	0:24041b847eb5	4036
congvu	0:24041b847eb5	4037
congvu	0:24041b847eb5	4038
congvu	0:24041b847eb5	4039
congvu	0:24041b847eb5	4040	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	4041	/* Put a formatted string to the file */
congvu	0:24041b847eb5	4042	/-----------------------------------------------------------------------/
congvu	0:24041b847eb5	4043	int f_printf (
congvu	0:24041b847eb5	4044	FIL* fil, /* Pointer to the file object */
congvu	0:24041b847eb5	4045	const TCHAR* str, /* Pointer to the format string */
congvu	0:24041b847eb5	4046	... /* Optional arguments... */
congvu	0:24041b847eb5	4047	)
congvu	0:24041b847eb5	4048	{
congvu	0:24041b847eb5	4049	va_list arp;
congvu	0:24041b847eb5	4050	BYTE f, r;
congvu	0:24041b847eb5	4051	UINT i, j, w;
congvu	0:24041b847eb5	4052	ULONG v;
congvu	0:24041b847eb5	4053	TCHAR c, d, s[16], *p;
congvu	0:24041b847eb5	4054	int res, chc, cc;
congvu	0:24041b847eb5	4055
congvu	0:24041b847eb5	4056
congvu	0:24041b847eb5	4057	va_start(arp, str);
congvu	0:24041b847eb5	4058
congvu	0:24041b847eb5	4059	for (cc = res = 0; cc != EOF; res += cc) {
congvu	0:24041b847eb5	4060	c = *str++;
congvu	0:24041b847eb5	4061	if (c == 0) break; /* End of string */
congvu	0:24041b847eb5	4062	if (c != '%') { /* Non escape character */
congvu	0:24041b847eb5	4063	cc = f_putc(c, fil);
congvu	0:24041b847eb5	4064	if (cc != EOF) cc = 1;
congvu	0:24041b847eb5	4065	continue;
congvu	0:24041b847eb5	4066	}
congvu	0:24041b847eb5	4067	w = f = 0;
congvu	0:24041b847eb5	4068	c = *str++;
congvu	0:24041b847eb5	4069	if (c == '0') { /* Flag: '0' padding */
congvu	0:24041b847eb5	4070	f = 1; c = *str++;
congvu	0:24041b847eb5	4071	} else {
congvu	0:24041b847eb5	4072	if (c == '-') { /* Flag: left justified */
congvu	0:24041b847eb5	4073	f = 2; c = *str++;
congvu	0:24041b847eb5	4074	}
congvu	0:24041b847eb5	4075	}
congvu	0:24041b847eb5	4076	while (IsDigit(c)) { /* Precision */
congvu	0:24041b847eb5	4077	w = w * 10 + c - '0';
congvu	0:24041b847eb5	4078	c = *str++;
congvu	0:24041b847eb5	4079	}
congvu	0:24041b847eb5	4080	if (c == 'l' \|\| c == 'L') { /* Prefix: Size is long int */
congvu	0:24041b847eb5	4081	f \|= 4; c = *str++;
congvu	0:24041b847eb5	4082	}
congvu	0:24041b847eb5	4083	if (!c) break;
congvu	0:24041b847eb5	4084	d = c;
congvu	0:24041b847eb5	4085	if (IsLower(d)) d -= 0x20;
congvu	0:24041b847eb5	4086	switch (d) { /* Type is... */
congvu	0:24041b847eb5	4087	case 'S' : /* String */
congvu	0:24041b847eb5	4088	p = va_arg(arp, TCHAR*);
congvu	0:24041b847eb5	4089	for (j = 0; p[j]; j++) ;
congvu	0:24041b847eb5	4090	chc = 0;
congvu	0:24041b847eb5	4091	if (!(f & 2)) {
congvu	0:24041b847eb5	4092	while (j++ < w) chc += (cc = f_putc(' ', fil));
congvu	0:24041b847eb5	4093	}
congvu	0:24041b847eb5	4094	chc += (cc = f_puts(p, fil));
congvu	0:24041b847eb5	4095	while (j++ < w) chc += (cc = f_putc(' ', fil));
congvu	0:24041b847eb5	4096	if (cc != EOF) cc = chc;
congvu	0:24041b847eb5	4097	continue;
congvu	0:24041b847eb5	4098	case 'C' : /* Character */
congvu	0:24041b847eb5	4099	cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
congvu	0:24041b847eb5	4100	case 'B' : /* Binary */
congvu	0:24041b847eb5	4101	r = 2; break;
congvu	0:24041b847eb5	4102	case 'O' : /* Octal */
congvu	0:24041b847eb5	4103	r = 8; break;
congvu	0:24041b847eb5	4104	case 'D' : /* Signed decimal */
congvu	0:24041b847eb5	4105	case 'U' : /* Unsigned decimal */
congvu	0:24041b847eb5	4106	r = 10; break;
congvu	0:24041b847eb5	4107	case 'X' : /* Hexdecimal */
congvu	0:24041b847eb5	4108	r = 16; break;
congvu	0:24041b847eb5	4109	default: /* Unknown type (pass-through) */
congvu	0:24041b847eb5	4110	cc = f_putc(c, fil); continue;
congvu	0:24041b847eb5	4111	}
congvu	0:24041b847eb5	4112
congvu	0:24041b847eb5	4113	/* Get an argument and put it in numeral */
congvu	0:24041b847eb5	4114	v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int));
congvu	0:24041b847eb5	4115	if (d == 'D' && (v & 0x80000000)) {
congvu	0:24041b847eb5	4116	v = 0 - v;
congvu	0:24041b847eb5	4117	f \|= 8;
congvu	0:24041b847eb5	4118	}
congvu	0:24041b847eb5	4119	i = 0;
congvu	0:24041b847eb5	4120	do {
congvu	0:24041b847eb5	4121	d = (TCHAR)(v % r); v /= r;
congvu	0:24041b847eb5	4122	if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
congvu	0:24041b847eb5	4123	s[i++] = d + '0';
congvu	0:24041b847eb5	4124	} while (v && i < sizeof s / sizeof s[0]);
congvu	0:24041b847eb5	4125	if (f & 8) s[i++] = '-';
congvu	0:24041b847eb5	4126	j = i; d = (f & 1) ? '0' : ' ';
congvu	0:24041b847eb5	4127	res = 0;
congvu	0:24041b847eb5	4128	while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
congvu	0:24041b847eb5	4129	do res += (cc = f_putc(s[--i], fil)); while(i);
congvu	0:24041b847eb5	4130	while (j++ < w) res += (cc = f_putc(' ', fil));
congvu	0:24041b847eb5	4131	if (cc != EOF) cc = res;
congvu	0:24041b847eb5	4132	}
congvu	0:24041b847eb5	4133
congvu	0:24041b847eb5	4134	va_end(arp);
congvu	0:24041b847eb5	4135	return (cc == EOF) ? cc : res;
congvu	0:24041b847eb5	4136	}
congvu	0:24041b847eb5	4137
congvu	0:24041b847eb5	4138	#endif /* !_FS_READONLY */
congvu	0:24041b847eb5	4139	#endif /* _USE_STRFUNC */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	25 Nov 2020
Imports:	0
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

SDFileSystem/FATFileSystem/ChaN/ff.cpp@0:24041b847eb5, 2020-11-25 (annotated)

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