SDFileSystem - Uses a more recent version of official mbed libra…

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Whitworth-EN173-Resources / SDFileSystem

Uses a more recent version of official mbed libraries than that of Neil Thiessen

Dependencies: FATFileSystem

Dependents: ThermalWake STM32F407VET6_SDCard STM32F407VET6_SD_HTTP_Server ZZ_SSL_Main_L476 ... more

Fork of SDFileSystem by Neil Thiessen

FATFileSystem/ChaN/ff.cpp@11:67ddc53e3983, 2014-08-14 (annotated)

Committer:: neilt6
Date:: Thu Aug 14 22:27:07 2014 +0000
Revision:: 11:67ddc53e3983

Major performance improvements with custom FATFileSystem

Who changed what in which revision?

User	Revision	Line number	New contents of line
neilt6	11:67ddc53e3983	1	/*----------------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2	/ FatFs - FAT file system module R0.09a (C)ChaN, 2012
neilt6	11:67ddc53e3983	3	/-----------------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4	/ FatFs module is a generic FAT file system module for small embedded systems.
neilt6	11:67ddc53e3983	5	/ This is a free software that opened for education, research and commercial
neilt6	11:67ddc53e3983	6	/ developments under license policy of following terms.
neilt6	11:67ddc53e3983	7	/
neilt6	11:67ddc53e3983	8	/ Copyright (C) 2012, ChaN, all right reserved.
neilt6	11:67ddc53e3983	9	/
neilt6	11:67ddc53e3983	10	/ * The FatFs module is a free software and there is NO WARRANTY.
neilt6	11:67ddc53e3983	11	/ * No restriction on use. You can use, modify and redistribute it for
neilt6	11:67ddc53e3983	12	/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
neilt6	11:67ddc53e3983	13	/ * Redistributions of source code must retain the above copyright notice.
neilt6	11:67ddc53e3983	14	/
neilt6	11:67ddc53e3983	15	/-----------------------------------------------------------------------------/
neilt6	11:67ddc53e3983	16	/ Feb 26,'06 R0.00 Prototype.
neilt6	11:67ddc53e3983	17	/
neilt6	11:67ddc53e3983	18	/ Apr 29,'06 R0.01 First stable version.
neilt6	11:67ddc53e3983	19	/
neilt6	11:67ddc53e3983	20	/ Jun 01,'06 R0.02 Added FAT12 support.
neilt6	11:67ddc53e3983	21	/ Removed unbuffered mode.
neilt6	11:67ddc53e3983	22	/ Fixed a problem on small (<32M) partition.
neilt6	11:67ddc53e3983	23	/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
neilt6	11:67ddc53e3983	24	/
neilt6	11:67ddc53e3983	25	/ Sep 22,'06 R0.03 Added f_rename().
neilt6	11:67ddc53e3983	26	/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
neilt6	11:67ddc53e3983	27	/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
neilt6	11:67ddc53e3983	28	/ Fixed f_mkdir() creates incorrect directory on FAT32.
neilt6	11:67ddc53e3983	29	/
neilt6	11:67ddc53e3983	30	/ Feb 04,'07 R0.04 Supported multiple drive system.
neilt6	11:67ddc53e3983	31	/ Changed some interfaces for multiple drive system.
neilt6	11:67ddc53e3983	32	/ Changed f_mountdrv() to f_mount().
neilt6	11:67ddc53e3983	33	/ Added f_mkfs().
neilt6	11:67ddc53e3983	34	/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
neilt6	11:67ddc53e3983	35	/ Added a capability of extending file size to f_lseek().
neilt6	11:67ddc53e3983	36	/ Added minimization level 3.
neilt6	11:67ddc53e3983	37	/ Fixed an endian sensitive code in f_mkfs().
neilt6	11:67ddc53e3983	38	/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
neilt6	11:67ddc53e3983	39	/ Added FSInfo support.
neilt6	11:67ddc53e3983	40	/ Fixed DBCS name can result FR_INVALID_NAME.
neilt6	11:67ddc53e3983	41	/ Fixed short seek (<= csize) collapses the file object.
neilt6	11:67ddc53e3983	42	/
neilt6	11:67ddc53e3983	43	/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
neilt6	11:67ddc53e3983	44	/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
neilt6	11:67ddc53e3983	45	/ Fixed f_mkdir() on FAT32 creates incorrect directory.
neilt6	11:67ddc53e3983	46	/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
neilt6	11:67ddc53e3983	47	/ Fixed off by one error at FAT sub-type determination.
neilt6	11:67ddc53e3983	48	/ Fixed btr in f_read() can be mistruncated.
neilt6	11:67ddc53e3983	49	/ Fixed cached sector is not flushed when create and close without write.
neilt6	11:67ddc53e3983	50	/
neilt6	11:67ddc53e3983	51	/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
neilt6	11:67ddc53e3983	52	/ Improved performance of f_lseek() on moving to the same or following cluster.
neilt6	11:67ddc53e3983	53	/
neilt6	11:67ddc53e3983	54	/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
neilt6	11:67ddc53e3983	55	/ Added long file name feature.
neilt6	11:67ddc53e3983	56	/ Added multiple code page feature.
neilt6	11:67ddc53e3983	57	/ Added re-entrancy for multitask operation.
neilt6	11:67ddc53e3983	58	/ Added auto cluster size selection to f_mkfs().
neilt6	11:67ddc53e3983	59	/ Added rewind option to f_readdir().
neilt6	11:67ddc53e3983	60	/ Changed result code of critical errors.
neilt6	11:67ddc53e3983	61	/ Renamed string functions to avoid name collision.
neilt6	11:67ddc53e3983	62	/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
neilt6	11:67ddc53e3983	63	/ Added multiple sector size feature.
neilt6	11:67ddc53e3983	64	/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
neilt6	11:67ddc53e3983	65	/ Fixed wrong cache control in f_lseek().
neilt6	11:67ddc53e3983	66	/ Added relative path feature.
neilt6	11:67ddc53e3983	67	/ Added f_chdir() and f_chdrive().
neilt6	11:67ddc53e3983	68	/ Added proper case conversion to extended char.
neilt6	11:67ddc53e3983	69	/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
neilt6	11:67ddc53e3983	70	/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
neilt6	11:67ddc53e3983	71	/ Fixed name matching error on the 13 char boundary.
neilt6	11:67ddc53e3983	72	/ Added a configuration option, _LFN_UNICODE.
neilt6	11:67ddc53e3983	73	/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
neilt6	11:67ddc53e3983	74	/
neilt6	11:67ddc53e3983	75	/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
neilt6	11:67ddc53e3983	76	/ Added file lock feature. (_FS_SHARE)
neilt6	11:67ddc53e3983	77	/ Added fast seek feature. (_USE_FASTSEEK)
neilt6	11:67ddc53e3983	78	/ Changed some types on the API, XCHAR->TCHAR.
neilt6	11:67ddc53e3983	79	/ Changed fname member in the FILINFO structure on Unicode cfg.
neilt6	11:67ddc53e3983	80	/ String functions support UTF-8 encoding files on Unicode cfg.
neilt6	11:67ddc53e3983	81	/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
neilt6	11:67ddc53e3983	82	/ Added sector erase feature. (_USE_ERASE)
neilt6	11:67ddc53e3983	83	/ Moved file lock semaphore table from fs object to the bss.
neilt6	11:67ddc53e3983	84	/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
neilt6	11:67ddc53e3983	85	/ Fixed f_mkfs() creates wrong FAT32 volume.
neilt6	11:67ddc53e3983	86	/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
neilt6	11:67ddc53e3983	87	/ f_lseek() reports required table size on creating CLMP.
neilt6	11:67ddc53e3983	88	/ Extended format syntax of f_printf function.
neilt6	11:67ddc53e3983	89	/ Ignores duplicated directory separators in given path name.
neilt6	11:67ddc53e3983	90	/
neilt6	11:67ddc53e3983	91	/ Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature.
neilt6	11:67ddc53e3983	92	/ Added f_fdisk(). (_MULTI_PARTITION = 2)
neilt6	11:67ddc53e3983	93	/ Aug 27,'12 R0.09a Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
neilt6	11:67ddc53e3983	94	/ Changed f_open() and f_opendir reject null object pointer to avoid crash.
neilt6	11:67ddc53e3983	95	/ Changed option name _FS_SHARE to _FS_LOCK.
neilt6	11:67ddc53e3983	96	/---------------------------------------------------------------------------*/
neilt6	11:67ddc53e3983	97
neilt6	11:67ddc53e3983	98	#include "ff.h" /* FatFs configurations and declarations */
neilt6	11:67ddc53e3983	99	#include "diskio.h" /* Declarations of low level disk I/O functions */
neilt6	11:67ddc53e3983	100
neilt6	11:67ddc53e3983	101
neilt6	11:67ddc53e3983	102	/*--------------------------------------------------------------------------
neilt6	11:67ddc53e3983	103
neilt6	11:67ddc53e3983	104	Module Private Definitions
neilt6	11:67ddc53e3983	105
neilt6	11:67ddc53e3983	106	---------------------------------------------------------------------------*/
neilt6	11:67ddc53e3983	107
neilt6	11:67ddc53e3983	108	#if _FATFS != 4004 /* Revision ID */
neilt6	11:67ddc53e3983	109	#error Wrong include file (ff.h).
neilt6	11:67ddc53e3983	110	#endif
neilt6	11:67ddc53e3983	111
neilt6	11:67ddc53e3983	112
neilt6	11:67ddc53e3983	113	/* Definitions on sector size */
neilt6	11:67ddc53e3983	114	#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
neilt6	11:67ddc53e3983	115	#error Wrong sector size.
neilt6	11:67ddc53e3983	116	#endif
neilt6	11:67ddc53e3983	117	#if _MAX_SS != 512
neilt6	11:67ddc53e3983	118	#define SS(fs) ((fs)->ssize) /* Variable sector size */
neilt6	11:67ddc53e3983	119	#else
neilt6	11:67ddc53e3983	120	#define SS(fs) 512U /* Fixed sector size */
neilt6	11:67ddc53e3983	121	#endif
neilt6	11:67ddc53e3983	122
neilt6	11:67ddc53e3983	123
neilt6	11:67ddc53e3983	124	/* Reentrancy related */
neilt6	11:67ddc53e3983	125	#if _FS_REENTRANT
neilt6	11:67ddc53e3983	126	#if _USE_LFN == 1
neilt6	11:67ddc53e3983	127	#error Static LFN work area must not be used in re-entrant configuration.
neilt6	11:67ddc53e3983	128	#endif
neilt6	11:67ddc53e3983	129	#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
neilt6	11:67ddc53e3983	130	#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
neilt6	11:67ddc53e3983	131	#else
neilt6	11:67ddc53e3983	132	#define ENTER_FF(fs)
neilt6	11:67ddc53e3983	133	#define LEAVE_FF(fs, res) return res
neilt6	11:67ddc53e3983	134	#endif
neilt6	11:67ddc53e3983	135
neilt6	11:67ddc53e3983	136	#define ABORT(fs, res) { fp->flag \|= FA__ERROR; LEAVE_FF(fs, res); }
neilt6	11:67ddc53e3983	137
neilt6	11:67ddc53e3983	138
neilt6	11:67ddc53e3983	139	/* File access control feature */
neilt6	11:67ddc53e3983	140	#if _FS_LOCK
neilt6	11:67ddc53e3983	141	#if _FS_READONLY
neilt6	11:67ddc53e3983	142	#error _FS_LOCK must be 0 on read-only cfg.
neilt6	11:67ddc53e3983	143	#endif
neilt6	11:67ddc53e3983	144	typedef struct {
neilt6	11:67ddc53e3983	145	FATFS fs; / File ID 1, volume (NULL:blank entry) */
neilt6	11:67ddc53e3983	146	DWORD clu; /* File ID 2, directory */
neilt6	11:67ddc53e3983	147	WORD idx; /* File ID 3, directory index */
neilt6	11:67ddc53e3983	148	WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
neilt6	11:67ddc53e3983	149	} FILESEM;
neilt6	11:67ddc53e3983	150	#endif
neilt6	11:67ddc53e3983	151
neilt6	11:67ddc53e3983	152
neilt6	11:67ddc53e3983	153
neilt6	11:67ddc53e3983	154	/* DBCS code ranges and SBCS extend char conversion table */
neilt6	11:67ddc53e3983	155
neilt6	11:67ddc53e3983	156	#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
neilt6	11:67ddc53e3983	157	#define _DF1S 0x81 /* DBC 1st byte range 1 start */
neilt6	11:67ddc53e3983	158	#define _DF1E 0x9F /* DBC 1st byte range 1 end */
neilt6	11:67ddc53e3983	159	#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
neilt6	11:67ddc53e3983	160	#define _DF2E 0xFC /* DBC 1st byte range 2 end */
neilt6	11:67ddc53e3983	161	#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
neilt6	11:67ddc53e3983	162	#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
neilt6	11:67ddc53e3983	163	#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
neilt6	11:67ddc53e3983	164	#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
neilt6	11:67ddc53e3983	165
neilt6	11:67ddc53e3983	166	#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
neilt6	11:67ddc53e3983	167	#define _DF1S 0x81
neilt6	11:67ddc53e3983	168	#define _DF1E 0xFE
neilt6	11:67ddc53e3983	169	#define _DS1S 0x40
neilt6	11:67ddc53e3983	170	#define _DS1E 0x7E
neilt6	11:67ddc53e3983	171	#define _DS2S 0x80
neilt6	11:67ddc53e3983	172	#define _DS2E 0xFE
neilt6	11:67ddc53e3983	173
neilt6	11:67ddc53e3983	174	#elif _CODE_PAGE == 949 /* Korean */
neilt6	11:67ddc53e3983	175	#define _DF1S 0x81
neilt6	11:67ddc53e3983	176	#define _DF1E 0xFE
neilt6	11:67ddc53e3983	177	#define _DS1S 0x41
neilt6	11:67ddc53e3983	178	#define _DS1E 0x5A
neilt6	11:67ddc53e3983	179	#define _DS2S 0x61
neilt6	11:67ddc53e3983	180	#define _DS2E 0x7A
neilt6	11:67ddc53e3983	181	#define _DS3S 0x81
neilt6	11:67ddc53e3983	182	#define _DS3E 0xFE
neilt6	11:67ddc53e3983	183
neilt6	11:67ddc53e3983	184	#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
neilt6	11:67ddc53e3983	185	#define _DF1S 0x81
neilt6	11:67ddc53e3983	186	#define _DF1E 0xFE
neilt6	11:67ddc53e3983	187	#define _DS1S 0x40
neilt6	11:67ddc53e3983	188	#define _DS1E 0x7E
neilt6	11:67ddc53e3983	189	#define _DS2S 0xA1
neilt6	11:67ddc53e3983	190	#define _DS2E 0xFE
neilt6	11:67ddc53e3983	191
neilt6	11:67ddc53e3983	192	#elif _CODE_PAGE == 437 /* U.S. (OEM) */
neilt6	11:67ddc53e3983	193	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	198
neilt6	11:67ddc53e3983	199	#elif _CODE_PAGE == 720 /* Arabic (OEM) */
neilt6	11:67ddc53e3983	200	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	205
neilt6	11:67ddc53e3983	206	#elif _CODE_PAGE == 737 /* Greek (OEM) */
neilt6	11:67ddc53e3983	207	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	212
neilt6	11:67ddc53e3983	213	#elif _CODE_PAGE == 775 /* Baltic (OEM) */
neilt6	11:67ddc53e3983	214	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	219
neilt6	11:67ddc53e3983	220	#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
neilt6	11:67ddc53e3983	221	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	226
neilt6	11:67ddc53e3983	227	#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
neilt6	11:67ddc53e3983	228	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	233
neilt6	11:67ddc53e3983	234	#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
neilt6	11:67ddc53e3983	235	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	240
neilt6	11:67ddc53e3983	241	#elif _CODE_PAGE == 857 /* Turkish (OEM) */
neilt6	11:67ddc53e3983	242	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	247
neilt6	11:67ddc53e3983	248	#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
neilt6	11:67ddc53e3983	249	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	254
neilt6	11:67ddc53e3983	255	#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
neilt6	11:67ddc53e3983	256	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	261
neilt6	11:67ddc53e3983	262	#elif _CODE_PAGE == 866 /* Russian (OEM) */
neilt6	11:67ddc53e3983	263	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	268
neilt6	11:67ddc53e3983	269	#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
neilt6	11:67ddc53e3983	270	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	275
neilt6	11:67ddc53e3983	276	#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
neilt6	11:67ddc53e3983	277	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	282
neilt6	11:67ddc53e3983	283	#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
neilt6	11:67ddc53e3983	284	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	289
neilt6	11:67ddc53e3983	290	#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
neilt6	11:67ddc53e3983	291	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	296
neilt6	11:67ddc53e3983	297	#elif _CODE_PAGE == 1253 /* Greek (Windows) */
neilt6	11:67ddc53e3983	298	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	303
neilt6	11:67ddc53e3983	304	#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
neilt6	11:67ddc53e3983	305	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	310
neilt6	11:67ddc53e3983	311	#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
neilt6	11:67ddc53e3983	312	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	317
neilt6	11:67ddc53e3983	318	#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
neilt6	11:67ddc53e3983	319	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	324
neilt6	11:67ddc53e3983	325	#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
neilt6	11:67ddc53e3983	326	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	331
neilt6	11:67ddc53e3983	332	#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
neilt6	11:67ddc53e3983	333	#define _DF1S 0
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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, \
neilt6	11:67ddc53e3983	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}
neilt6	11:67ddc53e3983	338
neilt6	11:67ddc53e3983	339	#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
neilt6	11:67ddc53e3983	340	#if _USE_LFN
neilt6	11:67ddc53e3983	341	#error Cannot use LFN feature without valid code page.
neilt6	11:67ddc53e3983	342	#endif
neilt6	11:67ddc53e3983	343	#define _DF1S 0
neilt6	11:67ddc53e3983	344
neilt6	11:67ddc53e3983	345	#else
neilt6	11:67ddc53e3983	346	#error Unknown code page
neilt6	11:67ddc53e3983	347
neilt6	11:67ddc53e3983	348	#endif
neilt6	11:67ddc53e3983	349
neilt6	11:67ddc53e3983	350
neilt6	11:67ddc53e3983	351	/* Character code support macros */
neilt6	11:67ddc53e3983	352	#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
neilt6	11:67ddc53e3983	353	#define IsLower(c) (((c)>='a')&&((c)<='z'))
neilt6	11:67ddc53e3983	354	#define IsDigit(c) (((c)>='0')&&((c)<='9'))
neilt6	11:67ddc53e3983	355
neilt6	11:67ddc53e3983	356	#if _DF1S /* Code page is DBCS */
neilt6	11:67ddc53e3983	357
neilt6	11:67ddc53e3983	358	#ifdef _DF2S /* Two 1st byte areas */
neilt6	11:67ddc53e3983	359	#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) \|\| ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
neilt6	11:67ddc53e3983	360	#else /* One 1st byte area */
neilt6	11:67ddc53e3983	361	#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
neilt6	11:67ddc53e3983	362	#endif
neilt6	11:67ddc53e3983	363
neilt6	11:67ddc53e3983	364	#ifdef _DS3S /* Three 2nd byte areas */
neilt6	11:67ddc53e3983	365	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) \|\| ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
neilt6	11:67ddc53e3983	366	#else /* Two 2nd byte areas */
neilt6	11:67ddc53e3983	367	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
neilt6	11:67ddc53e3983	368	#endif
neilt6	11:67ddc53e3983	369
neilt6	11:67ddc53e3983	370	#else /* Code page is SBCS */
neilt6	11:67ddc53e3983	371
neilt6	11:67ddc53e3983	372	#define IsDBCS1(c) 0
neilt6	11:67ddc53e3983	373	#define IsDBCS2(c) 0
neilt6	11:67ddc53e3983	374
neilt6	11:67ddc53e3983	375	#endif /* _DF1S */
neilt6	11:67ddc53e3983	376
neilt6	11:67ddc53e3983	377
neilt6	11:67ddc53e3983	378	/* Name status flags */
neilt6	11:67ddc53e3983	379	#define NS 11 /* Index of name status byte in fn[] */
neilt6	11:67ddc53e3983	380	#define NS_LOSS 0x01 /* Out of 8.3 format */
neilt6	11:67ddc53e3983	381	#define NS_LFN 0x02 /* Force to create LFN entry */
neilt6	11:67ddc53e3983	382	#define NS_LAST 0x04 /* Last segment */
neilt6	11:67ddc53e3983	383	#define NS_BODY 0x08 /* Lower case flag (body) */
neilt6	11:67ddc53e3983	384	#define NS_EXT 0x10 /* Lower case flag (ext) */
neilt6	11:67ddc53e3983	385	#define NS_DOT 0x20 /* Dot entry */
neilt6	11:67ddc53e3983	386
neilt6	11:67ddc53e3983	387
neilt6	11:67ddc53e3983	388	/* FAT sub-type boundaries */
neilt6	11:67ddc53e3983	389	/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
neilt6	11:67ddc53e3983	390	#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
neilt6	11:67ddc53e3983	391	#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
neilt6	11:67ddc53e3983	392
neilt6	11:67ddc53e3983	393
neilt6	11:67ddc53e3983	394	/* FatFs refers the members in the FAT structures as byte array instead of
neilt6	11:67ddc53e3983	395	/ structure member because the structure is not binary compatible between
neilt6	11:67ddc53e3983	396	/ different platforms */
neilt6	11:67ddc53e3983	397
neilt6	11:67ddc53e3983	398	#define BS_jmpBoot 0 /* Jump instruction (3) */
neilt6	11:67ddc53e3983	399	#define BS_OEMName 3 /* OEM name (8) */
neilt6	11:67ddc53e3983	400	#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
neilt6	11:67ddc53e3983	401	#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
neilt6	11:67ddc53e3983	402	#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
neilt6	11:67ddc53e3983	403	#define BPB_NumFATs 16 /* Number of FAT copies (1) */
neilt6	11:67ddc53e3983	404	#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
neilt6	11:67ddc53e3983	405	#define BPB_TotSec16 19 /* Volume size [sector] (2) */
neilt6	11:67ddc53e3983	406	#define BPB_Media 21 /* Media descriptor (1) */
neilt6	11:67ddc53e3983	407	#define BPB_FATSz16 22 /* FAT size [sector] (2) */
neilt6	11:67ddc53e3983	408	#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
neilt6	11:67ddc53e3983	409	#define BPB_NumHeads 26 /* Number of heads (2) */
neilt6	11:67ddc53e3983	410	#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
neilt6	11:67ddc53e3983	411	#define BPB_TotSec32 32 /* Volume size [sector] (4) */
neilt6	11:67ddc53e3983	412	#define BS_DrvNum 36 /* Physical drive number (2) */
neilt6	11:67ddc53e3983	413	#define BS_BootSig 38 /* Extended boot signature (1) */
neilt6	11:67ddc53e3983	414	#define BS_VolID 39 /* Volume serial number (4) */
neilt6	11:67ddc53e3983	415	#define BS_VolLab 43 /* Volume label (8) */
neilt6	11:67ddc53e3983	416	#define BS_FilSysType 54 /* File system type (1) */
neilt6	11:67ddc53e3983	417	#define BPB_FATSz32 36 /* FAT size [sector] (4) */
neilt6	11:67ddc53e3983	418	#define BPB_ExtFlags 40 /* Extended flags (2) */
neilt6	11:67ddc53e3983	419	#define BPB_FSVer 42 /* File system version (2) */
neilt6	11:67ddc53e3983	420	#define BPB_RootClus 44 /* Root dir first cluster (4) */
neilt6	11:67ddc53e3983	421	#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
neilt6	11:67ddc53e3983	422	#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
neilt6	11:67ddc53e3983	423	#define BS_DrvNum32 64 /* Physical drive number (2) */
neilt6	11:67ddc53e3983	424	#define BS_BootSig32 66 /* Extended boot signature (1) */
neilt6	11:67ddc53e3983	425	#define BS_VolID32 67 /* Volume serial number (4) */
neilt6	11:67ddc53e3983	426	#define BS_VolLab32 71 /* Volume label (8) */
neilt6	11:67ddc53e3983	427	#define BS_FilSysType32 82 /* File system type (1) */
neilt6	11:67ddc53e3983	428	#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
neilt6	11:67ddc53e3983	429	#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
neilt6	11:67ddc53e3983	430	#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
neilt6	11:67ddc53e3983	431	#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
neilt6	11:67ddc53e3983	432	#define MBR_Table 446 /* MBR: Partition table offset (2) */
neilt6	11:67ddc53e3983	433	#define SZ_PTE 16 /* MBR: Size of a partition table entry */
neilt6	11:67ddc53e3983	434	#define BS_55AA 510 /* Boot sector signature (2) */
neilt6	11:67ddc53e3983	435
neilt6	11:67ddc53e3983	436	#define DIR_Name 0 /* Short file name (11) */
neilt6	11:67ddc53e3983	437	#define DIR_Attr 11 /* Attribute (1) */
neilt6	11:67ddc53e3983	438	#define DIR_NTres 12 /* NT flag (1) */
neilt6	11:67ddc53e3983	439	#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
neilt6	11:67ddc53e3983	440	#define DIR_CrtTime 14 /* Created time (2) */
neilt6	11:67ddc53e3983	441	#define DIR_CrtDate 16 /* Created date (2) */
neilt6	11:67ddc53e3983	442	#define DIR_LstAccDate 18 /* Last accessed date (2) */
neilt6	11:67ddc53e3983	443	#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
neilt6	11:67ddc53e3983	444	#define DIR_WrtTime 22 /* Modified time (2) */
neilt6	11:67ddc53e3983	445	#define DIR_WrtDate 24 /* Modified date (2) */
neilt6	11:67ddc53e3983	446	#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
neilt6	11:67ddc53e3983	447	#define DIR_FileSize 28 /* File size (4) */
neilt6	11:67ddc53e3983	448	#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
neilt6	11:67ddc53e3983	449	#define LDIR_Attr 11 /* LFN attribute (1) */
neilt6	11:67ddc53e3983	450	#define LDIR_Type 12 /* LFN type (1) */
neilt6	11:67ddc53e3983	451	#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
neilt6	11:67ddc53e3983	452	#define LDIR_FstClusLO 26 /* Filled by zero (0) */
neilt6	11:67ddc53e3983	453	#define SZ_DIR 32 /* Size of a directory entry */
neilt6	11:67ddc53e3983	454	#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
neilt6	11:67ddc53e3983	455	#define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
neilt6	11:67ddc53e3983	456	#define NDDE 0x05 /* Replacement of the character collides with DDE */
neilt6	11:67ddc53e3983	457
neilt6	11:67ddc53e3983	458
neilt6	11:67ddc53e3983	459	/------------------------------------------------------------/
neilt6	11:67ddc53e3983	460	/* Module private work area */
neilt6	11:67ddc53e3983	461	/------------------------------------------------------------/
neilt6	11:67ddc53e3983	462	/* Note that uninitialized variables with static duration are
neilt6	11:67ddc53e3983	463	/ zeroed/nulled at start-up. If not, the compiler or start-up
neilt6	11:67ddc53e3983	464	/ routine is out of ANSI-C standard.
neilt6	11:67ddc53e3983	465	*/
neilt6	11:67ddc53e3983	466
neilt6	11:67ddc53e3983	467	#if _VOLUMES
neilt6	11:67ddc53e3983	468	static
neilt6	11:67ddc53e3983	469	FATFS FatFs[_VOLUMES]; / Pointer to the file system objects (logical drives) */
neilt6	11:67ddc53e3983	470	#else
neilt6	11:67ddc53e3983	471	#error Number of volumes must not be 0.
neilt6	11:67ddc53e3983	472	#endif
neilt6	11:67ddc53e3983	473
neilt6	11:67ddc53e3983	474	static
neilt6	11:67ddc53e3983	475	WORD Fsid; /* File system mount ID */
neilt6	11:67ddc53e3983	476
neilt6	11:67ddc53e3983	477	#if _FS_RPATH
neilt6	11:67ddc53e3983	478	static
neilt6	11:67ddc53e3983	479	BYTE CurrVol; /* Current drive */
neilt6	11:67ddc53e3983	480	#endif
neilt6	11:67ddc53e3983	481
neilt6	11:67ddc53e3983	482	#if _FS_LOCK
neilt6	11:67ddc53e3983	483	static
neilt6	11:67ddc53e3983	484	FILESEM Files[_FS_LOCK]; /* File lock semaphores */
neilt6	11:67ddc53e3983	485	#endif
neilt6	11:67ddc53e3983	486
neilt6	11:67ddc53e3983	487	#if _USE_LFN == 0 /* No LFN feature */
neilt6	11:67ddc53e3983	488	#define DEF_NAMEBUF BYTE sfn[12]
neilt6	11:67ddc53e3983	489	#define INIT_BUF(dobj) (dobj).fn = sfn
neilt6	11:67ddc53e3983	490	#define FREE_BUF()
neilt6	11:67ddc53e3983	491
neilt6	11:67ddc53e3983	492	#elif _USE_LFN == 1 /* LFN feature with static working buffer */
neilt6	11:67ddc53e3983	493	static WCHAR LfnBuf[_MAX_LFN+1];
neilt6	11:67ddc53e3983	494	#define DEF_NAMEBUF BYTE sfn[12]
neilt6	11:67ddc53e3983	495	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
neilt6	11:67ddc53e3983	496	#define FREE_BUF()
neilt6	11:67ddc53e3983	497
neilt6	11:67ddc53e3983	498	#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
neilt6	11:67ddc53e3983	499	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
neilt6	11:67ddc53e3983	500	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
neilt6	11:67ddc53e3983	501	#define FREE_BUF()
neilt6	11:67ddc53e3983	502
neilt6	11:67ddc53e3983	503	#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
neilt6	11:67ddc53e3983	504	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
neilt6	11:67ddc53e3983	505	#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
neilt6	11:67ddc53e3983	506	if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
neilt6	11:67ddc53e3983	507	(dobj).lfn = lfn; (dobj).fn = sfn; }
neilt6	11:67ddc53e3983	508	#define FREE_BUF() ff_memfree(lfn)
neilt6	11:67ddc53e3983	509
neilt6	11:67ddc53e3983	510	#else
neilt6	11:67ddc53e3983	511	#error Wrong LFN configuration.
neilt6	11:67ddc53e3983	512	#endif
neilt6	11:67ddc53e3983	513
neilt6	11:67ddc53e3983	514
neilt6	11:67ddc53e3983	515
neilt6	11:67ddc53e3983	516
neilt6	11:67ddc53e3983	517	/*--------------------------------------------------------------------------
neilt6	11:67ddc53e3983	518
neilt6	11:67ddc53e3983	519	Module Private Functions
neilt6	11:67ddc53e3983	520
neilt6	11:67ddc53e3983	521	---------------------------------------------------------------------------*/
neilt6	11:67ddc53e3983	522
neilt6	11:67ddc53e3983	523
neilt6	11:67ddc53e3983	524	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	525	/* String functions */
neilt6	11:67ddc53e3983	526	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	527
neilt6	11:67ddc53e3983	528	/* Copy memory to memory */
neilt6	11:67ddc53e3983	529	static
neilt6	11:67ddc53e3983	530	void mem_cpy (void* dst, const void* src, UINT cnt)
neilt6	11:67ddc53e3983	531	{
neilt6	11:67ddc53e3983	532	BYTE d = (BYTE)dst;
neilt6	11:67ddc53e3983	533	const BYTE s = (const BYTE)src;
neilt6	11:67ddc53e3983	534
neilt6	11:67ddc53e3983	535	#if _WORD_ACCESS == 1
neilt6	11:67ddc53e3983	536	while (cnt >= sizeof (int)) {
neilt6	11:67ddc53e3983	537	(int)d = (int)s;
neilt6	11:67ddc53e3983	538	d += sizeof (int);
neilt6	11:67ddc53e3983	539	s += sizeof (int);
neilt6	11:67ddc53e3983	540	cnt -= sizeof (int);
neilt6	11:67ddc53e3983	541	}
neilt6	11:67ddc53e3983	542	#endif
neilt6	11:67ddc53e3983	543	while (cnt--)
neilt6	11:67ddc53e3983	544	d++ = s++;
neilt6	11:67ddc53e3983	545	}
neilt6	11:67ddc53e3983	546
neilt6	11:67ddc53e3983	547	/* Fill memory */
neilt6	11:67ddc53e3983	548	static
neilt6	11:67ddc53e3983	549	void mem_set (void* dst, int val, UINT cnt)
neilt6	11:67ddc53e3983	550	{
neilt6	11:67ddc53e3983	551	BYTE d = (BYTE)dst;
neilt6	11:67ddc53e3983	552
neilt6	11:67ddc53e3983	553	while (cnt--)
neilt6	11:67ddc53e3983	554	*d++ = (BYTE)val;
neilt6	11:67ddc53e3983	555	}
neilt6	11:67ddc53e3983	556
neilt6	11:67ddc53e3983	557	/* Compare memory to memory */
neilt6	11:67ddc53e3983	558	static
neilt6	11:67ddc53e3983	559	int mem_cmp (const void* dst, const void* src, UINT cnt)
neilt6	11:67ddc53e3983	560	{
neilt6	11:67ddc53e3983	561	const BYTE d = (const BYTE )dst, s = (const BYTE )src;
neilt6	11:67ddc53e3983	562	int r = 0;
neilt6	11:67ddc53e3983	563
neilt6	11:67ddc53e3983	564	while (cnt-- && (r = d++ - s++) == 0) ;
neilt6	11:67ddc53e3983	565	return r;
neilt6	11:67ddc53e3983	566	}
neilt6	11:67ddc53e3983	567
neilt6	11:67ddc53e3983	568	/* Check if chr is contained in the string */
neilt6	11:67ddc53e3983	569	static
neilt6	11:67ddc53e3983	570	int chk_chr (const char* str, int chr)
neilt6	11:67ddc53e3983	571	{
neilt6	11:67ddc53e3983	572	while (str && str != chr) str++;
neilt6	11:67ddc53e3983	573	return *str;
neilt6	11:67ddc53e3983	574	}
neilt6	11:67ddc53e3983	575
neilt6	11:67ddc53e3983	576
neilt6	11:67ddc53e3983	577
neilt6	11:67ddc53e3983	578	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	579	/* Request/Release grant to access the volume */
neilt6	11:67ddc53e3983	580	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	581	#if _FS_REENTRANT
neilt6	11:67ddc53e3983	582
neilt6	11:67ddc53e3983	583	static
neilt6	11:67ddc53e3983	584	int lock_fs (
neilt6	11:67ddc53e3983	585	FATFS fs / File system object */
neilt6	11:67ddc53e3983	586	)
neilt6	11:67ddc53e3983	587	{
neilt6	11:67ddc53e3983	588	return ff_req_grant(fs->sobj);
neilt6	11:67ddc53e3983	589	}
neilt6	11:67ddc53e3983	590
neilt6	11:67ddc53e3983	591
neilt6	11:67ddc53e3983	592	static
neilt6	11:67ddc53e3983	593	void unlock_fs (
neilt6	11:67ddc53e3983	594	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	595	FRESULT res /* Result code to be returned */
neilt6	11:67ddc53e3983	596	)
neilt6	11:67ddc53e3983	597	{
neilt6	11:67ddc53e3983	598	if (fs &&
neilt6	11:67ddc53e3983	599	res != FR_NOT_ENABLED &&
neilt6	11:67ddc53e3983	600	res != FR_INVALID_DRIVE &&
neilt6	11:67ddc53e3983	601	res != FR_INVALID_OBJECT &&
neilt6	11:67ddc53e3983	602	res != FR_TIMEOUT) {
neilt6	11:67ddc53e3983	603	ff_rel_grant(fs->sobj);
neilt6	11:67ddc53e3983	604	}
neilt6	11:67ddc53e3983	605	}
neilt6	11:67ddc53e3983	606	#endif
neilt6	11:67ddc53e3983	607
neilt6	11:67ddc53e3983	608
neilt6	11:67ddc53e3983	609
neilt6	11:67ddc53e3983	610	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	611	/* File lock control functions */
neilt6	11:67ddc53e3983	612	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	613	#if _FS_LOCK
neilt6	11:67ddc53e3983	614
neilt6	11:67ddc53e3983	615	static
neilt6	11:67ddc53e3983	616	FRESULT chk_lock ( /* Check if the file can be accessed */
neilt6	11:67ddc53e3983	617	DIR* dj, /* Directory object pointing the file to be checked */
neilt6	11:67ddc53e3983	618	int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
neilt6	11:67ddc53e3983	619	)
neilt6	11:67ddc53e3983	620	{
neilt6	11:67ddc53e3983	621	UINT i, be;
neilt6	11:67ddc53e3983	622
neilt6	11:67ddc53e3983	623	/* Search file semaphore table */
neilt6	11:67ddc53e3983	624	for (i = be = 0; i < _FS_LOCK; i++) {
neilt6	11:67ddc53e3983	625	if (Files[i].fs) { /* Existing entry */
neilt6	11:67ddc53e3983	626	if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
neilt6	11:67ddc53e3983	627	Files[i].clu == dj->sclust &&
neilt6	11:67ddc53e3983	628	Files[i].idx == dj->index) break;
neilt6	11:67ddc53e3983	629	} else { /* Blank entry */
neilt6	11:67ddc53e3983	630	be++;
neilt6	11:67ddc53e3983	631	}
neilt6	11:67ddc53e3983	632	}
neilt6	11:67ddc53e3983	633	if (i == _FS_LOCK) /* The file is not opened */
neilt6	11:67ddc53e3983	634	return (be \|\| acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
neilt6	11:67ddc53e3983	635
neilt6	11:67ddc53e3983	636	/* The file has been opened. Reject any open against writing file and all write mode open */
neilt6	11:67ddc53e3983	637	return (acc \|\| Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
neilt6	11:67ddc53e3983	638	}
neilt6	11:67ddc53e3983	639
neilt6	11:67ddc53e3983	640
neilt6	11:67ddc53e3983	641	static
neilt6	11:67ddc53e3983	642	int enq_lock (void) /* Check if an entry is available for a new file */
neilt6	11:67ddc53e3983	643	{
neilt6	11:67ddc53e3983	644	UINT i;
neilt6	11:67ddc53e3983	645
neilt6	11:67ddc53e3983	646	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
neilt6	11:67ddc53e3983	647	return (i == _FS_LOCK) ? 0 : 1;
neilt6	11:67ddc53e3983	648	}
neilt6	11:67ddc53e3983	649
neilt6	11:67ddc53e3983	650
neilt6	11:67ddc53e3983	651	static
neilt6	11:67ddc53e3983	652	UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
neilt6	11:67ddc53e3983	653	DIR* dj, /* Directory object pointing the file to register or increment */
neilt6	11:67ddc53e3983	654	int acc /* Desired access mode (0:Read, !0:Write) */
neilt6	11:67ddc53e3983	655	)
neilt6	11:67ddc53e3983	656	{
neilt6	11:67ddc53e3983	657	UINT i;
neilt6	11:67ddc53e3983	658
neilt6	11:67ddc53e3983	659
neilt6	11:67ddc53e3983	660	for (i = 0; i < _FS_LOCK; i++) { /* Find the file */
neilt6	11:67ddc53e3983	661	if (Files[i].fs == dj->fs &&
neilt6	11:67ddc53e3983	662	Files[i].clu == dj->sclust &&
neilt6	11:67ddc53e3983	663	Files[i].idx == dj->index) break;
neilt6	11:67ddc53e3983	664	}
neilt6	11:67ddc53e3983	665
neilt6	11:67ddc53e3983	666	if (i == _FS_LOCK) { /* Not opened. Register it as new. */
neilt6	11:67ddc53e3983	667	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
neilt6	11:67ddc53e3983	668	if (i == _FS_LOCK) return 0; /* No space to register (int err) */
neilt6	11:67ddc53e3983	669	Files[i].fs = dj->fs;
neilt6	11:67ddc53e3983	670	Files[i].clu = dj->sclust;
neilt6	11:67ddc53e3983	671	Files[i].idx = dj->index;
neilt6	11:67ddc53e3983	672	Files[i].ctr = 0;
neilt6	11:67ddc53e3983	673	}
neilt6	11:67ddc53e3983	674
neilt6	11:67ddc53e3983	675	if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
neilt6	11:67ddc53e3983	676
neilt6	11:67ddc53e3983	677	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
neilt6	11:67ddc53e3983	678
neilt6	11:67ddc53e3983	679	return i + 1;
neilt6	11:67ddc53e3983	680	}
neilt6	11:67ddc53e3983	681
neilt6	11:67ddc53e3983	682
neilt6	11:67ddc53e3983	683	static
neilt6	11:67ddc53e3983	684	FRESULT dec_lock ( /* Decrement file open counter */
neilt6	11:67ddc53e3983	685	UINT i /* Semaphore index */
neilt6	11:67ddc53e3983	686	)
neilt6	11:67ddc53e3983	687	{
neilt6	11:67ddc53e3983	688	WORD n;
neilt6	11:67ddc53e3983	689	FRESULT res;
neilt6	11:67ddc53e3983	690
neilt6	11:67ddc53e3983	691
neilt6	11:67ddc53e3983	692	if (--i < _FS_LOCK) {
neilt6	11:67ddc53e3983	693	n = Files[i].ctr;
neilt6	11:67ddc53e3983	694	if (n == 0x100) n = 0;
neilt6	11:67ddc53e3983	695	if (n) n--;
neilt6	11:67ddc53e3983	696	Files[i].ctr = n;
neilt6	11:67ddc53e3983	697	if (!n) Files[i].fs = 0;
neilt6	11:67ddc53e3983	698	res = FR_OK;
neilt6	11:67ddc53e3983	699	} else {
neilt6	11:67ddc53e3983	700	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	701	}
neilt6	11:67ddc53e3983	702	return res;
neilt6	11:67ddc53e3983	703	}
neilt6	11:67ddc53e3983	704
neilt6	11:67ddc53e3983	705
neilt6	11:67ddc53e3983	706	static
neilt6	11:67ddc53e3983	707	void clear_lock ( /* Clear lock entries of the volume */
neilt6	11:67ddc53e3983	708	FATFS *fs
neilt6	11:67ddc53e3983	709	)
neilt6	11:67ddc53e3983	710	{
neilt6	11:67ddc53e3983	711	UINT i;
neilt6	11:67ddc53e3983	712
neilt6	11:67ddc53e3983	713	for (i = 0; i < _FS_LOCK; i++) {
neilt6	11:67ddc53e3983	714	if (Files[i].fs == fs) Files[i].fs = 0;
neilt6	11:67ddc53e3983	715	}
neilt6	11:67ddc53e3983	716	}
neilt6	11:67ddc53e3983	717	#endif
neilt6	11:67ddc53e3983	718
neilt6	11:67ddc53e3983	719
neilt6	11:67ddc53e3983	720
neilt6	11:67ddc53e3983	721	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	722	/* Change window offset */
neilt6	11:67ddc53e3983	723	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	724
neilt6	11:67ddc53e3983	725	static
neilt6	11:67ddc53e3983	726	FRESULT move_window (
neilt6	11:67ddc53e3983	727	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	728	DWORD sector /* Sector number to make appearance in the fs->win[] */
neilt6	11:67ddc53e3983	729	) /* Move to zero only writes back dirty window */
neilt6	11:67ddc53e3983	730	{
neilt6	11:67ddc53e3983	731	DWORD wsect;
neilt6	11:67ddc53e3983	732
neilt6	11:67ddc53e3983	733
neilt6	11:67ddc53e3983	734	wsect = fs->winsect;
neilt6	11:67ddc53e3983	735	if (wsect != sector) { /* Changed current window */
neilt6	11:67ddc53e3983	736	#if !_FS_READONLY
neilt6	11:67ddc53e3983	737	if (fs->wflag) { /* Write back dirty window if needed */
neilt6	11:67ddc53e3983	738	if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	739	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	740	fs->wflag = 0;
neilt6	11:67ddc53e3983	741	if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
neilt6	11:67ddc53e3983	742	BYTE nf;
neilt6	11:67ddc53e3983	743	for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
neilt6	11:67ddc53e3983	744	wsect += fs->fsize;
neilt6	11:67ddc53e3983	745	disk_write(fs->drv, fs->win, wsect, 1);
neilt6	11:67ddc53e3983	746	}
neilt6	11:67ddc53e3983	747	}
neilt6	11:67ddc53e3983	748	}
neilt6	11:67ddc53e3983	749	#endif
neilt6	11:67ddc53e3983	750	if (sector) {
neilt6	11:67ddc53e3983	751	if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
neilt6	11:67ddc53e3983	752	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	753	fs->winsect = sector;
neilt6	11:67ddc53e3983	754	}
neilt6	11:67ddc53e3983	755	}
neilt6	11:67ddc53e3983	756
neilt6	11:67ddc53e3983	757	return FR_OK;
neilt6	11:67ddc53e3983	758	}
neilt6	11:67ddc53e3983	759
neilt6	11:67ddc53e3983	760
neilt6	11:67ddc53e3983	761
neilt6	11:67ddc53e3983	762
neilt6	11:67ddc53e3983	763	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	764	/* Clean-up cached data */
neilt6	11:67ddc53e3983	765	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	766	#if !_FS_READONLY
neilt6	11:67ddc53e3983	767	static
neilt6	11:67ddc53e3983	768	FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
neilt6	11:67ddc53e3983	769	FATFS fs / File system object */
neilt6	11:67ddc53e3983	770	)
neilt6	11:67ddc53e3983	771	{
neilt6	11:67ddc53e3983	772	FRESULT res;
neilt6	11:67ddc53e3983	773
neilt6	11:67ddc53e3983	774
neilt6	11:67ddc53e3983	775	res = move_window(fs, 0);
neilt6	11:67ddc53e3983	776	if (res == FR_OK) {
neilt6	11:67ddc53e3983	777	/* Update FSInfo sector if needed */
neilt6	11:67ddc53e3983	778	if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
neilt6	11:67ddc53e3983	779	fs->winsect = 0;
neilt6	11:67ddc53e3983	780	/* Create FSInfo structure */
neilt6	11:67ddc53e3983	781	mem_set(fs->win, 0, 512);
neilt6	11:67ddc53e3983	782	ST_WORD(fs->win+BS_55AA, 0xAA55);
neilt6	11:67ddc53e3983	783	ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
neilt6	11:67ddc53e3983	784	ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
neilt6	11:67ddc53e3983	785	ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
neilt6	11:67ddc53e3983	786	ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
neilt6	11:67ddc53e3983	787	/* Write it into the FSInfo sector */
neilt6	11:67ddc53e3983	788	disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
neilt6	11:67ddc53e3983	789	fs->fsi_flag = 0;
neilt6	11:67ddc53e3983	790	}
neilt6	11:67ddc53e3983	791	/* Make sure that no pending write process in the physical drive */
neilt6	11:67ddc53e3983	792	if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
neilt6	11:67ddc53e3983	793	res = FR_DISK_ERR;
neilt6	11:67ddc53e3983	794	}
neilt6	11:67ddc53e3983	795
neilt6	11:67ddc53e3983	796	return res;
neilt6	11:67ddc53e3983	797	}
neilt6	11:67ddc53e3983	798	#endif
neilt6	11:67ddc53e3983	799
neilt6	11:67ddc53e3983	800
neilt6	11:67ddc53e3983	801
neilt6	11:67ddc53e3983	802
neilt6	11:67ddc53e3983	803	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	804	/* Get sector# from cluster# */
neilt6	11:67ddc53e3983	805	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	806
neilt6	11:67ddc53e3983	807
neilt6	11:67ddc53e3983	808	DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
neilt6	11:67ddc53e3983	809	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	810	DWORD clst /* Cluster# to be converted */
neilt6	11:67ddc53e3983	811	)
neilt6	11:67ddc53e3983	812	{
neilt6	11:67ddc53e3983	813	clst -= 2;
neilt6	11:67ddc53e3983	814	if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
neilt6	11:67ddc53e3983	815	return clst * fs->csize + fs->database;
neilt6	11:67ddc53e3983	816	}
neilt6	11:67ddc53e3983	817
neilt6	11:67ddc53e3983	818
neilt6	11:67ddc53e3983	819
neilt6	11:67ddc53e3983	820
neilt6	11:67ddc53e3983	821	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	822	/* FAT access - Read value of a FAT entry */
neilt6	11:67ddc53e3983	823	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	824
neilt6	11:67ddc53e3983	825
neilt6	11:67ddc53e3983	826	DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
neilt6	11:67ddc53e3983	827	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	828	DWORD clst /* Cluster# to get the link information */
neilt6	11:67ddc53e3983	829	)
neilt6	11:67ddc53e3983	830	{
neilt6	11:67ddc53e3983	831	UINT wc, bc;
neilt6	11:67ddc53e3983	832	BYTE *p;
neilt6	11:67ddc53e3983	833
neilt6	11:67ddc53e3983	834
neilt6	11:67ddc53e3983	835	if (clst < 2 \|\| clst >= fs->n_fatent) /* Check range */
neilt6	11:67ddc53e3983	836	return 1;
neilt6	11:67ddc53e3983	837
neilt6	11:67ddc53e3983	838	switch (fs->fs_type) {
neilt6	11:67ddc53e3983	839	case FS_FAT12 :
neilt6	11:67ddc53e3983	840	bc = (UINT)clst;
neilt6	11:67ddc53e3983	841	bc += bc / 2;
neilt6	11:67ddc53e3983	842	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
neilt6	11:67ddc53e3983	843	wc = fs->win[bc % SS(fs)];
neilt6	11:67ddc53e3983	844	bc++;
neilt6	11:67ddc53e3983	845	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
neilt6	11:67ddc53e3983	846	wc \|= fs->win[bc % SS(fs)] << 8;
neilt6	11:67ddc53e3983	847	return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
neilt6	11:67ddc53e3983	848
neilt6	11:67ddc53e3983	849	case FS_FAT16 :
neilt6	11:67ddc53e3983	850	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
neilt6	11:67ddc53e3983	851	p = &fs->win[clst * 2 % SS(fs)];
neilt6	11:67ddc53e3983	852	return LD_WORD(p);
neilt6	11:67ddc53e3983	853
neilt6	11:67ddc53e3983	854	case FS_FAT32 :
neilt6	11:67ddc53e3983	855	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
neilt6	11:67ddc53e3983	856	p = &fs->win[clst * 4 % SS(fs)];
neilt6	11:67ddc53e3983	857	return LD_DWORD(p) & 0x0FFFFFFF;
neilt6	11:67ddc53e3983	858	}
neilt6	11:67ddc53e3983	859
neilt6	11:67ddc53e3983	860	return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
neilt6	11:67ddc53e3983	861	}
neilt6	11:67ddc53e3983	862
neilt6	11:67ddc53e3983	863
neilt6	11:67ddc53e3983	864
neilt6	11:67ddc53e3983	865
neilt6	11:67ddc53e3983	866	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	867	/* FAT access - Change value of a FAT entry */
neilt6	11:67ddc53e3983	868	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	869	#if !_FS_READONLY
neilt6	11:67ddc53e3983	870
neilt6	11:67ddc53e3983	871	FRESULT put_fat (
neilt6	11:67ddc53e3983	872	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	873	DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
neilt6	11:67ddc53e3983	874	DWORD val /* New value to mark the cluster */
neilt6	11:67ddc53e3983	875	)
neilt6	11:67ddc53e3983	876	{
neilt6	11:67ddc53e3983	877	UINT bc;
neilt6	11:67ddc53e3983	878	BYTE *p;
neilt6	11:67ddc53e3983	879	FRESULT res;
neilt6	11:67ddc53e3983	880
neilt6	11:67ddc53e3983	881
neilt6	11:67ddc53e3983	882	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
neilt6	11:67ddc53e3983	883	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	884
neilt6	11:67ddc53e3983	885	} else {
neilt6	11:67ddc53e3983	886	switch (fs->fs_type) {
neilt6	11:67ddc53e3983	887	case FS_FAT12 :
neilt6	11:67ddc53e3983	888	bc = (UINT)clst;
neilt6	11:67ddc53e3983	889	bc += bc / 2;
neilt6	11:67ddc53e3983	890	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
neilt6	11:67ddc53e3983	891	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	892	p = &fs->win[bc % SS(fs)];
neilt6	11:67ddc53e3983	893	p = (clst & 1) ? ((p & 0x0F) \| ((BYTE)val << 4)) : (BYTE)val;
neilt6	11:67ddc53e3983	894	bc++;
neilt6	11:67ddc53e3983	895	fs->wflag = 1;
neilt6	11:67ddc53e3983	896	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
neilt6	11:67ddc53e3983	897	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	898	p = &fs->win[bc % SS(fs)];
neilt6	11:67ddc53e3983	899	p = (clst & 1) ? (BYTE)(val >> 4) : ((p & 0xF0) \| ((BYTE)(val >> 8) & 0x0F));
neilt6	11:67ddc53e3983	900	break;
neilt6	11:67ddc53e3983	901
neilt6	11:67ddc53e3983	902	case FS_FAT16 :
neilt6	11:67ddc53e3983	903	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
neilt6	11:67ddc53e3983	904	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	905	p = &fs->win[clst * 2 % SS(fs)];
neilt6	11:67ddc53e3983	906	ST_WORD(p, (WORD)val);
neilt6	11:67ddc53e3983	907	break;
neilt6	11:67ddc53e3983	908
neilt6	11:67ddc53e3983	909	case FS_FAT32 :
neilt6	11:67ddc53e3983	910	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
neilt6	11:67ddc53e3983	911	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	912	p = &fs->win[clst * 4 % SS(fs)];
neilt6	11:67ddc53e3983	913	val \|= LD_DWORD(p) & 0xF0000000;
neilt6	11:67ddc53e3983	914	ST_DWORD(p, val);
neilt6	11:67ddc53e3983	915	break;
neilt6	11:67ddc53e3983	916
neilt6	11:67ddc53e3983	917	default :
neilt6	11:67ddc53e3983	918	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	919	}
neilt6	11:67ddc53e3983	920	fs->wflag = 1;
neilt6	11:67ddc53e3983	921	}
neilt6	11:67ddc53e3983	922
neilt6	11:67ddc53e3983	923	return res;
neilt6	11:67ddc53e3983	924	}
neilt6	11:67ddc53e3983	925	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	926
neilt6	11:67ddc53e3983	927
neilt6	11:67ddc53e3983	928
neilt6	11:67ddc53e3983	929
neilt6	11:67ddc53e3983	930	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	931	/* FAT handling - Remove a cluster chain */
neilt6	11:67ddc53e3983	932	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	933	#if !_FS_READONLY
neilt6	11:67ddc53e3983	934	static
neilt6	11:67ddc53e3983	935	FRESULT remove_chain (
neilt6	11:67ddc53e3983	936	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	937	DWORD clst /* Cluster# to remove a chain from */
neilt6	11:67ddc53e3983	938	)
neilt6	11:67ddc53e3983	939	{
neilt6	11:67ddc53e3983	940	FRESULT res;
neilt6	11:67ddc53e3983	941	DWORD nxt;
neilt6	11:67ddc53e3983	942	#if _USE_ERASE
neilt6	11:67ddc53e3983	943	DWORD scl = clst, ecl = clst, rt[2];
neilt6	11:67ddc53e3983	944	#endif
neilt6	11:67ddc53e3983	945
neilt6	11:67ddc53e3983	946	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
neilt6	11:67ddc53e3983	947	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	948
neilt6	11:67ddc53e3983	949	} else {
neilt6	11:67ddc53e3983	950	res = FR_OK;
neilt6	11:67ddc53e3983	951	while (clst < fs->n_fatent) { /* Not a last link? */
neilt6	11:67ddc53e3983	952	nxt = get_fat(fs, clst); /* Get cluster status */
neilt6	11:67ddc53e3983	953	if (nxt == 0) break; /* Empty cluster? */
neilt6	11:67ddc53e3983	954	if (nxt == 1) {
neilt6	11:67ddc53e3983	955	res = FR_INT_ERR; /* Internal error? */
neilt6	11:67ddc53e3983	956	break;
neilt6	11:67ddc53e3983	957	}
neilt6	11:67ddc53e3983	958	if (nxt == 0xFFFFFFFF) {
neilt6	11:67ddc53e3983	959	res = FR_DISK_ERR; /* Disk error? */
neilt6	11:67ddc53e3983	960	break;
neilt6	11:67ddc53e3983	961	}
neilt6	11:67ddc53e3983	962	res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
neilt6	11:67ddc53e3983	963	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	964	if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
neilt6	11:67ddc53e3983	965	fs->free_clust++;
neilt6	11:67ddc53e3983	966	fs->fsi_flag = 1;
neilt6	11:67ddc53e3983	967	}
neilt6	11:67ddc53e3983	968	#if _USE_ERASE
neilt6	11:67ddc53e3983	969	if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
neilt6	11:67ddc53e3983	970	ecl = nxt;
neilt6	11:67ddc53e3983	971	} else { /* End of contiguous clusters */
neilt6	11:67ddc53e3983	972	rt[0] = clust2sect(fs, scl); /* Start sector */
neilt6	11:67ddc53e3983	973	rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
neilt6	11:67ddc53e3983	974	disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, rt); /* Erase the block */
neilt6	11:67ddc53e3983	975	scl = ecl = nxt;
neilt6	11:67ddc53e3983	976	}
neilt6	11:67ddc53e3983	977	#endif
neilt6	11:67ddc53e3983	978	clst = nxt; /* Next cluster */
neilt6	11:67ddc53e3983	979	}
neilt6	11:67ddc53e3983	980	}
neilt6	11:67ddc53e3983	981
neilt6	11:67ddc53e3983	982	return res;
neilt6	11:67ddc53e3983	983	}
neilt6	11:67ddc53e3983	984	#endif
neilt6	11:67ddc53e3983	985
neilt6	11:67ddc53e3983	986
neilt6	11:67ddc53e3983	987
neilt6	11:67ddc53e3983	988
neilt6	11:67ddc53e3983	989	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	990	/* FAT handling - Stretch or Create a cluster chain */
neilt6	11:67ddc53e3983	991	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	992	#if !_FS_READONLY
neilt6	11:67ddc53e3983	993	static
neilt6	11:67ddc53e3983	994	DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
neilt6	11:67ddc53e3983	995	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	996	DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
neilt6	11:67ddc53e3983	997	)
neilt6	11:67ddc53e3983	998	{
neilt6	11:67ddc53e3983	999	DWORD cs, ncl, scl;
neilt6	11:67ddc53e3983	1000	FRESULT res;
neilt6	11:67ddc53e3983	1001
neilt6	11:67ddc53e3983	1002
neilt6	11:67ddc53e3983	1003	if (clst == 0) { /* Create a new chain */
neilt6	11:67ddc53e3983	1004	scl = fs->last_clust; /* Get suggested start point */
neilt6	11:67ddc53e3983	1005	if (!scl \|\| scl >= fs->n_fatent) scl = 1;
neilt6	11:67ddc53e3983	1006	} else { /* Stretch the current chain */
neilt6	11:67ddc53e3983	1007	cs = get_fat(fs, clst); /* Check the cluster status */
neilt6	11:67ddc53e3983	1008	if (cs < 2) return 1; /* It is an invalid cluster */
neilt6	11:67ddc53e3983	1009	if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
neilt6	11:67ddc53e3983	1010	scl = clst;
neilt6	11:67ddc53e3983	1011	}
neilt6	11:67ddc53e3983	1012
neilt6	11:67ddc53e3983	1013	ncl = scl; /* Start cluster */
neilt6	11:67ddc53e3983	1014	for (;;) {
neilt6	11:67ddc53e3983	1015	ncl++; /* Next cluster */
neilt6	11:67ddc53e3983	1016	if (ncl >= fs->n_fatent) { /* Wrap around */
neilt6	11:67ddc53e3983	1017	ncl = 2;
neilt6	11:67ddc53e3983	1018	if (ncl > scl) return 0; /* No free cluster */
neilt6	11:67ddc53e3983	1019	}
neilt6	11:67ddc53e3983	1020	cs = get_fat(fs, ncl); /* Get the cluster status */
neilt6	11:67ddc53e3983	1021	if (cs == 0) break; /* Found a free cluster */
neilt6	11:67ddc53e3983	1022	if (cs == 0xFFFFFFFF \|\| cs == 1)/* An error occurred */
neilt6	11:67ddc53e3983	1023	return cs;
neilt6	11:67ddc53e3983	1024	if (ncl == scl) return 0; /* No free cluster */
neilt6	11:67ddc53e3983	1025	}
neilt6	11:67ddc53e3983	1026
neilt6	11:67ddc53e3983	1027	res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
neilt6	11:67ddc53e3983	1028	if (res == FR_OK && clst != 0) {
neilt6	11:67ddc53e3983	1029	res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
neilt6	11:67ddc53e3983	1030	}
neilt6	11:67ddc53e3983	1031	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1032	fs->last_clust = ncl; /* Update FSINFO */
neilt6	11:67ddc53e3983	1033	if (fs->free_clust != 0xFFFFFFFF) {
neilt6	11:67ddc53e3983	1034	fs->free_clust--;
neilt6	11:67ddc53e3983	1035	fs->fsi_flag = 1;
neilt6	11:67ddc53e3983	1036	}
neilt6	11:67ddc53e3983	1037	} else {
neilt6	11:67ddc53e3983	1038	ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
neilt6	11:67ddc53e3983	1039	}
neilt6	11:67ddc53e3983	1040
neilt6	11:67ddc53e3983	1041	return ncl; /* Return new cluster number or error code */
neilt6	11:67ddc53e3983	1042	}
neilt6	11:67ddc53e3983	1043	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	1044
neilt6	11:67ddc53e3983	1045
neilt6	11:67ddc53e3983	1046
neilt6	11:67ddc53e3983	1047	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1048	/* FAT handling - Convert offset into cluster with link map table */
neilt6	11:67ddc53e3983	1049	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1050
neilt6	11:67ddc53e3983	1051	#if _USE_FASTSEEK
neilt6	11:67ddc53e3983	1052	static
neilt6	11:67ddc53e3983	1053	DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
neilt6	11:67ddc53e3983	1054	FIL* fp, /* Pointer to the file object */
neilt6	11:67ddc53e3983	1055	DWORD ofs /* File offset to be converted to cluster# */
neilt6	11:67ddc53e3983	1056	)
neilt6	11:67ddc53e3983	1057	{
neilt6	11:67ddc53e3983	1058	DWORD cl, ncl, *tbl;
neilt6	11:67ddc53e3983	1059
neilt6	11:67ddc53e3983	1060
neilt6	11:67ddc53e3983	1061	tbl = fp->cltbl + 1; /* Top of CLMT */
neilt6	11:67ddc53e3983	1062	cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
neilt6	11:67ddc53e3983	1063	for (;;) {
neilt6	11:67ddc53e3983	1064	ncl = tbl++; / Number of cluters in the fragment */
neilt6	11:67ddc53e3983	1065	if (!ncl) return 0; /* End of table? (error) */
neilt6	11:67ddc53e3983	1066	if (cl < ncl) break; /* In this fragment? */
neilt6	11:67ddc53e3983	1067	cl -= ncl;
neilt6	11:67ddc53e3983	1068	tbl++; /* Next fragment */
neilt6	11:67ddc53e3983	1069	}
neilt6	11:67ddc53e3983	1070	return cl + tbl; / Return the cluster number */
neilt6	11:67ddc53e3983	1071	}
neilt6	11:67ddc53e3983	1072	#endif /* _USE_FASTSEEK */
neilt6	11:67ddc53e3983	1073
neilt6	11:67ddc53e3983	1074
neilt6	11:67ddc53e3983	1075
neilt6	11:67ddc53e3983	1076	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1077	/* Directory handling - Set directory index */
neilt6	11:67ddc53e3983	1078	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1079
neilt6	11:67ddc53e3983	1080	static
neilt6	11:67ddc53e3983	1081	FRESULT dir_sdi (
neilt6	11:67ddc53e3983	1082	FATFS_DIR dj, / Pointer to directory object */
neilt6	11:67ddc53e3983	1083	WORD idx /* Index of directory table */
neilt6	11:67ddc53e3983	1084	)
neilt6	11:67ddc53e3983	1085	{
neilt6	11:67ddc53e3983	1086	DWORD clst;
neilt6	11:67ddc53e3983	1087	WORD ic;
neilt6	11:67ddc53e3983	1088
neilt6	11:67ddc53e3983	1089
neilt6	11:67ddc53e3983	1090	dj->index = idx;
neilt6	11:67ddc53e3983	1091	clst = dj->sclust;
neilt6	11:67ddc53e3983	1092	if (clst == 1 \|\| clst >= dj->fs->n_fatent) /* Check start cluster range */
neilt6	11:67ddc53e3983	1093	return FR_INT_ERR;
neilt6	11:67ddc53e3983	1094	if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
neilt6	11:67ddc53e3983	1095	clst = dj->fs->dirbase;
neilt6	11:67ddc53e3983	1096
neilt6	11:67ddc53e3983	1097	if (clst == 0) { /* Static table (root-dir in FAT12/16) */
neilt6	11:67ddc53e3983	1098	dj->clust = clst;
neilt6	11:67ddc53e3983	1099	if (idx >= dj->fs->n_rootdir) /* Index is out of range */
neilt6	11:67ddc53e3983	1100	return FR_INT_ERR;
neilt6	11:67ddc53e3983	1101	dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
neilt6	11:67ddc53e3983	1102	} else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
neilt6	11:67ddc53e3983	1103	ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
neilt6	11:67ddc53e3983	1104	while (idx >= ic) { /* Follow cluster chain */
neilt6	11:67ddc53e3983	1105	clst = get_fat(dj->fs, clst); /* Get next cluster */
neilt6	11:67ddc53e3983	1106	if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
neilt6	11:67ddc53e3983	1107	if (clst < 2 \|\| clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
neilt6	11:67ddc53e3983	1108	return FR_INT_ERR;
neilt6	11:67ddc53e3983	1109	idx -= ic;
neilt6	11:67ddc53e3983	1110	}
neilt6	11:67ddc53e3983	1111	dj->clust = clst;
neilt6	11:67ddc53e3983	1112	dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
neilt6	11:67ddc53e3983	1113	}
neilt6	11:67ddc53e3983	1114
neilt6	11:67ddc53e3983	1115	dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
neilt6	11:67ddc53e3983	1116
neilt6	11:67ddc53e3983	1117	return FR_OK; /* Seek succeeded */
neilt6	11:67ddc53e3983	1118	}
neilt6	11:67ddc53e3983	1119
neilt6	11:67ddc53e3983	1120
neilt6	11:67ddc53e3983	1121
neilt6	11:67ddc53e3983	1122
neilt6	11:67ddc53e3983	1123	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1124	/* Directory handling - Move directory table index next */
neilt6	11:67ddc53e3983	1125	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1126
neilt6	11:67ddc53e3983	1127	static
neilt6	11:67ddc53e3983	1128	FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
neilt6	11:67ddc53e3983	1129	FATFS_DIR dj, / Pointer to directory object */
neilt6	11:67ddc53e3983	1130	int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
neilt6	11:67ddc53e3983	1131	)
neilt6	11:67ddc53e3983	1132	{
neilt6	11:67ddc53e3983	1133	DWORD clst;
neilt6	11:67ddc53e3983	1134	WORD i;
neilt6	11:67ddc53e3983	1135
neilt6	11:67ddc53e3983	1136
neilt6	11:67ddc53e3983	1137	stretch = stretch; /* To suppress warning on read-only cfg. */
neilt6	11:67ddc53e3983	1138	i = dj->index + 1;
neilt6	11:67ddc53e3983	1139	if (!i \|\| !dj->sect) /* Report EOT when index has reached 65535 */
neilt6	11:67ddc53e3983	1140	return FR_NO_FILE;
neilt6	11:67ddc53e3983	1141
neilt6	11:67ddc53e3983	1142	if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
neilt6	11:67ddc53e3983	1143	dj->sect++; /* Next sector */
neilt6	11:67ddc53e3983	1144
neilt6	11:67ddc53e3983	1145	if (dj->clust == 0) { /* Static table */
neilt6	11:67ddc53e3983	1146	if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
neilt6	11:67ddc53e3983	1147	return FR_NO_FILE;
neilt6	11:67ddc53e3983	1148	} else { /* Dynamic table */
neilt6	11:67ddc53e3983	1149	if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
neilt6	11:67ddc53e3983	1150	clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
neilt6	11:67ddc53e3983	1151	if (clst <= 1) return FR_INT_ERR;
neilt6	11:67ddc53e3983	1152	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	1153	if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
neilt6	11:67ddc53e3983	1154	#if !_FS_READONLY
neilt6	11:67ddc53e3983	1155	BYTE c;
neilt6	11:67ddc53e3983	1156	if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
neilt6	11:67ddc53e3983	1157	clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
neilt6	11:67ddc53e3983	1158	if (clst == 0) return FR_DENIED; /* No free cluster */
neilt6	11:67ddc53e3983	1159	if (clst == 1) return FR_INT_ERR;
neilt6	11:67ddc53e3983	1160	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	1161	/* Clean-up stretched table */
neilt6	11:67ddc53e3983	1162	if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
neilt6	11:67ddc53e3983	1163	mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
neilt6	11:67ddc53e3983	1164	dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
neilt6	11:67ddc53e3983	1165	for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
neilt6	11:67ddc53e3983	1166	dj->fs->wflag = 1;
neilt6	11:67ddc53e3983	1167	if (move_window(dj->fs, 0)) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	1168	dj->fs->winsect++;
neilt6	11:67ddc53e3983	1169	}
neilt6	11:67ddc53e3983	1170	dj->fs->winsect -= c; /* Rewind window address */
neilt6	11:67ddc53e3983	1171	#else
neilt6	11:67ddc53e3983	1172	return FR_NO_FILE; /* Report EOT */
neilt6	11:67ddc53e3983	1173	#endif
neilt6	11:67ddc53e3983	1174	}
neilt6	11:67ddc53e3983	1175	dj->clust = clst; /* Initialize data for new cluster */
neilt6	11:67ddc53e3983	1176	dj->sect = clust2sect(dj->fs, clst);
neilt6	11:67ddc53e3983	1177	}
neilt6	11:67ddc53e3983	1178	}
neilt6	11:67ddc53e3983	1179	}
neilt6	11:67ddc53e3983	1180
neilt6	11:67ddc53e3983	1181	dj->index = i;
neilt6	11:67ddc53e3983	1182	dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
neilt6	11:67ddc53e3983	1183
neilt6	11:67ddc53e3983	1184	return FR_OK;
neilt6	11:67ddc53e3983	1185	}
neilt6	11:67ddc53e3983	1186
neilt6	11:67ddc53e3983	1187
neilt6	11:67ddc53e3983	1188
neilt6	11:67ddc53e3983	1189
neilt6	11:67ddc53e3983	1190	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1191	/* Directory handling - Load/Store start cluster number */
neilt6	11:67ddc53e3983	1192	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1193
neilt6	11:67ddc53e3983	1194	static
neilt6	11:67ddc53e3983	1195	DWORD ld_clust (
neilt6	11:67ddc53e3983	1196	FATFS fs, / Pointer to the fs object */
neilt6	11:67ddc53e3983	1197	BYTE dir / Pointer to the directory entry */
neilt6	11:67ddc53e3983	1198	)
neilt6	11:67ddc53e3983	1199	{
neilt6	11:67ddc53e3983	1200	DWORD cl;
neilt6	11:67ddc53e3983	1201
neilt6	11:67ddc53e3983	1202	cl = LD_WORD(dir+DIR_FstClusLO);
neilt6	11:67ddc53e3983	1203	if (fs->fs_type == FS_FAT32)
neilt6	11:67ddc53e3983	1204	cl \|= (DWORD)LD_WORD(dir+DIR_FstClusHI) << 16;
neilt6	11:67ddc53e3983	1205
neilt6	11:67ddc53e3983	1206	return cl;
neilt6	11:67ddc53e3983	1207	}
neilt6	11:67ddc53e3983	1208
neilt6	11:67ddc53e3983	1209
neilt6	11:67ddc53e3983	1210	#if !_FS_READONLY
neilt6	11:67ddc53e3983	1211	static
neilt6	11:67ddc53e3983	1212	void st_clust (
neilt6	11:67ddc53e3983	1213	BYTE dir, / Pointer to the directory entry */
neilt6	11:67ddc53e3983	1214	DWORD cl /* Value to be set */
neilt6	11:67ddc53e3983	1215	)
neilt6	11:67ddc53e3983	1216	{
neilt6	11:67ddc53e3983	1217	ST_WORD(dir+DIR_FstClusLO, cl);
neilt6	11:67ddc53e3983	1218	ST_WORD(dir+DIR_FstClusHI, cl >> 16);
neilt6	11:67ddc53e3983	1219	}
neilt6	11:67ddc53e3983	1220	#endif
neilt6	11:67ddc53e3983	1221
neilt6	11:67ddc53e3983	1222
neilt6	11:67ddc53e3983	1223
neilt6	11:67ddc53e3983	1224	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1225	/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
neilt6	11:67ddc53e3983	1226	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1227	#if _USE_LFN
neilt6	11:67ddc53e3983	1228	static
neilt6	11:67ddc53e3983	1229	const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
neilt6	11:67ddc53e3983	1230
neilt6	11:67ddc53e3983	1231
neilt6	11:67ddc53e3983	1232	static
neilt6	11:67ddc53e3983	1233	int cmp_lfn ( /* 1:Matched, 0:Not matched */
neilt6	11:67ddc53e3983	1234	WCHAR lfnbuf, / Pointer to the LFN to be compared */
neilt6	11:67ddc53e3983	1235	BYTE dir / Pointer to the directory entry containing a part of LFN */
neilt6	11:67ddc53e3983	1236	)
neilt6	11:67ddc53e3983	1237	{
neilt6	11:67ddc53e3983	1238	UINT i, s;
neilt6	11:67ddc53e3983	1239	WCHAR wc, uc;
neilt6	11:67ddc53e3983	1240
neilt6	11:67ddc53e3983	1241
neilt6	11:67ddc53e3983	1242	i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
neilt6	11:67ddc53e3983	1243	s = 0;
neilt6	11:67ddc53e3983	1244	wc = 1;
neilt6	11:67ddc53e3983	1245	do {
neilt6	11:67ddc53e3983	1246	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
neilt6	11:67ddc53e3983	1247	if (wc) { /* Last char has not been processed */
neilt6	11:67ddc53e3983	1248	wc = ff_wtoupper(uc); /* Convert it to upper case */
neilt6	11:67ddc53e3983	1249	if (i >= _MAX_LFN \|\| wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
neilt6	11:67ddc53e3983	1250	return 0; /* Not matched */
neilt6	11:67ddc53e3983	1251	} else {
neilt6	11:67ddc53e3983	1252	if (uc != 0xFFFF) return 0; /* Check filler */
neilt6	11:67ddc53e3983	1253	}
neilt6	11:67ddc53e3983	1254	} while (++s < 13); /* Repeat until all chars in the entry are checked */
neilt6	11:67ddc53e3983	1255
neilt6	11:67ddc53e3983	1256	if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
neilt6	11:67ddc53e3983	1257	return 0;
neilt6	11:67ddc53e3983	1258
neilt6	11:67ddc53e3983	1259	return 1; /* The part of LFN matched */
neilt6	11:67ddc53e3983	1260	}
neilt6	11:67ddc53e3983	1261
neilt6	11:67ddc53e3983	1262
neilt6	11:67ddc53e3983	1263
neilt6	11:67ddc53e3983	1264	static
neilt6	11:67ddc53e3983	1265	int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
neilt6	11:67ddc53e3983	1266	WCHAR lfnbuf, / Pointer to the Unicode-LFN buffer */
neilt6	11:67ddc53e3983	1267	BYTE dir / Pointer to the directory entry */
neilt6	11:67ddc53e3983	1268	)
neilt6	11:67ddc53e3983	1269	{
neilt6	11:67ddc53e3983	1270	UINT i, s;
neilt6	11:67ddc53e3983	1271	WCHAR wc, uc;
neilt6	11:67ddc53e3983	1272
neilt6	11:67ddc53e3983	1273
neilt6	11:67ddc53e3983	1274	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
neilt6	11:67ddc53e3983	1275
neilt6	11:67ddc53e3983	1276	s = 0;
neilt6	11:67ddc53e3983	1277	wc = 1;
neilt6	11:67ddc53e3983	1278	do {
neilt6	11:67ddc53e3983	1279	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
neilt6	11:67ddc53e3983	1280	if (wc) { /* Last char has not been processed */
neilt6	11:67ddc53e3983	1281	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
neilt6	11:67ddc53e3983	1282	lfnbuf[i++] = wc = uc; /* Store it */
neilt6	11:67ddc53e3983	1283	} else {
neilt6	11:67ddc53e3983	1284	if (uc != 0xFFFF) return 0; /* Check filler */
neilt6	11:67ddc53e3983	1285	}
neilt6	11:67ddc53e3983	1286	} while (++s < 13); /* Read all character in the entry */
neilt6	11:67ddc53e3983	1287
neilt6	11:67ddc53e3983	1288	if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
neilt6	11:67ddc53e3983	1289	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
neilt6	11:67ddc53e3983	1290	lfnbuf[i] = 0;
neilt6	11:67ddc53e3983	1291	}
neilt6	11:67ddc53e3983	1292
neilt6	11:67ddc53e3983	1293	return 1;
neilt6	11:67ddc53e3983	1294	}
neilt6	11:67ddc53e3983	1295
neilt6	11:67ddc53e3983	1296
neilt6	11:67ddc53e3983	1297	#if !_FS_READONLY
neilt6	11:67ddc53e3983	1298	static
neilt6	11:67ddc53e3983	1299	void fit_lfn (
neilt6	11:67ddc53e3983	1300	const WCHAR lfnbuf, / Pointer to the LFN buffer */
neilt6	11:67ddc53e3983	1301	BYTE dir, / Pointer to the directory entry */
neilt6	11:67ddc53e3983	1302	BYTE ord, /* LFN order (1-20) */
neilt6	11:67ddc53e3983	1303	BYTE sum /* SFN sum */
neilt6	11:67ddc53e3983	1304	)
neilt6	11:67ddc53e3983	1305	{
neilt6	11:67ddc53e3983	1306	UINT i, s;
neilt6	11:67ddc53e3983	1307	WCHAR wc;
neilt6	11:67ddc53e3983	1308
neilt6	11:67ddc53e3983	1309
neilt6	11:67ddc53e3983	1310	dir[LDIR_Chksum] = sum; /* Set check sum */
neilt6	11:67ddc53e3983	1311	dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
neilt6	11:67ddc53e3983	1312	dir[LDIR_Type] = 0;
neilt6	11:67ddc53e3983	1313	ST_WORD(dir+LDIR_FstClusLO, 0);
neilt6	11:67ddc53e3983	1314
neilt6	11:67ddc53e3983	1315	i = (ord - 1) * 13; /* Get offset in the LFN buffer */
neilt6	11:67ddc53e3983	1316	s = wc = 0;
neilt6	11:67ddc53e3983	1317	do {
neilt6	11:67ddc53e3983	1318	if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
neilt6	11:67ddc53e3983	1319	ST_WORD(dir+LfnOfs[s], wc); /* Put it */
neilt6	11:67ddc53e3983	1320	if (!wc) wc = 0xFFFF; /* Padding chars following last char */
neilt6	11:67ddc53e3983	1321	} while (++s < 13);
neilt6	11:67ddc53e3983	1322	if (wc == 0xFFFF \|\| !lfnbuf[i]) ord \|= LLE; /* Bottom LFN part is the start of LFN sequence */
neilt6	11:67ddc53e3983	1323	dir[LDIR_Ord] = ord; /* Set the LFN order */
neilt6	11:67ddc53e3983	1324	}
neilt6	11:67ddc53e3983	1325
neilt6	11:67ddc53e3983	1326	#endif
neilt6	11:67ddc53e3983	1327	#endif
neilt6	11:67ddc53e3983	1328
neilt6	11:67ddc53e3983	1329
neilt6	11:67ddc53e3983	1330
neilt6	11:67ddc53e3983	1331	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1332	/* Create numbered name */
neilt6	11:67ddc53e3983	1333	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1334	#if _USE_LFN
neilt6	11:67ddc53e3983	1335	void gen_numname (
neilt6	11:67ddc53e3983	1336	BYTE dst, / Pointer to generated SFN */
neilt6	11:67ddc53e3983	1337	const BYTE src, / Pointer to source SFN to be modified */
neilt6	11:67ddc53e3983	1338	const WCHAR lfn, / Pointer to LFN */
neilt6	11:67ddc53e3983	1339	WORD seq /* Sequence number */
neilt6	11:67ddc53e3983	1340	)
neilt6	11:67ddc53e3983	1341	{
neilt6	11:67ddc53e3983	1342	BYTE ns[8], c;
neilt6	11:67ddc53e3983	1343	UINT i, j;
neilt6	11:67ddc53e3983	1344
neilt6	11:67ddc53e3983	1345
neilt6	11:67ddc53e3983	1346	mem_cpy(dst, src, 11);
neilt6	11:67ddc53e3983	1347
neilt6	11:67ddc53e3983	1348	if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
neilt6	11:67ddc53e3983	1349	do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++;
neilt6	11:67ddc53e3983	1350	while (*lfn);
neilt6	11:67ddc53e3983	1351	}
neilt6	11:67ddc53e3983	1352
neilt6	11:67ddc53e3983	1353	/* itoa (hexdecimal) */
neilt6	11:67ddc53e3983	1354	i = 7;
neilt6	11:67ddc53e3983	1355	do {
neilt6	11:67ddc53e3983	1356	c = (seq % 16) + '0';
neilt6	11:67ddc53e3983	1357	if (c > '9') c += 7;
neilt6	11:67ddc53e3983	1358	ns[i--] = c;
neilt6	11:67ddc53e3983	1359	seq /= 16;
neilt6	11:67ddc53e3983	1360	} while (seq);
neilt6	11:67ddc53e3983	1361	ns[i] = '~';
neilt6	11:67ddc53e3983	1362
neilt6	11:67ddc53e3983	1363	/* Append the number */
neilt6	11:67ddc53e3983	1364	for (j = 0; j < i && dst[j] != ' '; j++) {
neilt6	11:67ddc53e3983	1365	if (IsDBCS1(dst[j])) {
neilt6	11:67ddc53e3983	1366	if (j == i - 1) break;
neilt6	11:67ddc53e3983	1367	j++;
neilt6	11:67ddc53e3983	1368	}
neilt6	11:67ddc53e3983	1369	}
neilt6	11:67ddc53e3983	1370	do {
neilt6	11:67ddc53e3983	1371	dst[j++] = (i < 8) ? ns[i++] : ' ';
neilt6	11:67ddc53e3983	1372	} while (j < 8);
neilt6	11:67ddc53e3983	1373	}
neilt6	11:67ddc53e3983	1374	#endif
neilt6	11:67ddc53e3983	1375
neilt6	11:67ddc53e3983	1376
neilt6	11:67ddc53e3983	1377
neilt6	11:67ddc53e3983	1378
neilt6	11:67ddc53e3983	1379	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1380	/* Calculate sum of an SFN */
neilt6	11:67ddc53e3983	1381	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1382	#if _USE_LFN
neilt6	11:67ddc53e3983	1383	static
neilt6	11:67ddc53e3983	1384	BYTE sum_sfn (
neilt6	11:67ddc53e3983	1385	const BYTE dir / Ptr to directory entry */
neilt6	11:67ddc53e3983	1386	)
neilt6	11:67ddc53e3983	1387	{
neilt6	11:67ddc53e3983	1388	BYTE sum = 0;
neilt6	11:67ddc53e3983	1389	UINT n = 11;
neilt6	11:67ddc53e3983	1390
neilt6	11:67ddc53e3983	1391	do sum = (sum >> 1) + (sum << 7) + *dir++;
neilt6	11:67ddc53e3983	1392	while (--n);
neilt6	11:67ddc53e3983	1393	return sum;
neilt6	11:67ddc53e3983	1394	}
neilt6	11:67ddc53e3983	1395	#endif
neilt6	11:67ddc53e3983	1396
neilt6	11:67ddc53e3983	1397
neilt6	11:67ddc53e3983	1398
neilt6	11:67ddc53e3983	1399
neilt6	11:67ddc53e3983	1400	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1401	/* Directory handling - Find an object in the directory */
neilt6	11:67ddc53e3983	1402	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1403
neilt6	11:67ddc53e3983	1404	static
neilt6	11:67ddc53e3983	1405	FRESULT dir_find (
neilt6	11:67ddc53e3983	1406	FATFS_DIR dj / Pointer to the directory object linked to the file name */
neilt6	11:67ddc53e3983	1407	)
neilt6	11:67ddc53e3983	1408	{
neilt6	11:67ddc53e3983	1409	FRESULT res;
neilt6	11:67ddc53e3983	1410	BYTE c, *dir;
neilt6	11:67ddc53e3983	1411	#if _USE_LFN
neilt6	11:67ddc53e3983	1412	BYTE a, ord, sum;
neilt6	11:67ddc53e3983	1413	#endif
neilt6	11:67ddc53e3983	1414
neilt6	11:67ddc53e3983	1415	res = dir_sdi(dj, 0); /* Rewind directory object */
neilt6	11:67ddc53e3983	1416	if (res != FR_OK) return res;
neilt6	11:67ddc53e3983	1417
neilt6	11:67ddc53e3983	1418	#if _USE_LFN
neilt6	11:67ddc53e3983	1419	ord = sum = 0xFF;
neilt6	11:67ddc53e3983	1420	#endif
neilt6	11:67ddc53e3983	1421	do {
neilt6	11:67ddc53e3983	1422	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1423	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1424	dir = dj->dir; /* Ptr to the directory entry of current index */
neilt6	11:67ddc53e3983	1425	c = dir[DIR_Name];
neilt6	11:67ddc53e3983	1426	if (c == 0) {
neilt6	11:67ddc53e3983	1427	res = FR_NO_FILE; /* Reached to end of table */
neilt6	11:67ddc53e3983	1428	break;
neilt6	11:67ddc53e3983	1429	}
neilt6	11:67ddc53e3983	1430	#if _USE_LFN /* LFN configuration */
neilt6	11:67ddc53e3983	1431	a = dir[DIR_Attr] & AM_MASK;
neilt6	11:67ddc53e3983	1432	if (c == DDE \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
neilt6	11:67ddc53e3983	1433	ord = 0xFF;
neilt6	11:67ddc53e3983	1434	} else {
neilt6	11:67ddc53e3983	1435	if (a == AM_LFN) { /* An LFN entry is found */
neilt6	11:67ddc53e3983	1436	if (dj->lfn) {
neilt6	11:67ddc53e3983	1437	if (c & LLE) { /* Is it start of LFN sequence? */
neilt6	11:67ddc53e3983	1438	sum = dir[LDIR_Chksum];
neilt6	11:67ddc53e3983	1439	c &= ~LLE;
neilt6	11:67ddc53e3983	1440	ord = c; /* LFN start order */
neilt6	11:67ddc53e3983	1441	dj->lfn_idx = dj->index;
neilt6	11:67ddc53e3983	1442	}
neilt6	11:67ddc53e3983	1443	/* Check validity of the LFN entry and compare it with given name */
neilt6	11:67ddc53e3983	1444	ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
neilt6	11:67ddc53e3983	1445	}
neilt6	11:67ddc53e3983	1446	} else { /* An SFN entry is found */
neilt6	11:67ddc53e3983	1447	if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
neilt6	11:67ddc53e3983	1448	ord = 0xFF;
neilt6	11:67ddc53e3983	1449	dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
neilt6	11:67ddc53e3983	1450	if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
neilt6	11:67ddc53e3983	1451	}
neilt6	11:67ddc53e3983	1452	}
neilt6	11:67ddc53e3983	1453	#else /* Non LFN configuration */
neilt6	11:67ddc53e3983	1454	if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
neilt6	11:67ddc53e3983	1455	break;
neilt6	11:67ddc53e3983	1456	#endif
neilt6	11:67ddc53e3983	1457	res = dir_next(dj, 0); /* Next entry */
neilt6	11:67ddc53e3983	1458	} while (res == FR_OK);
neilt6	11:67ddc53e3983	1459
neilt6	11:67ddc53e3983	1460	return res;
neilt6	11:67ddc53e3983	1461	}
neilt6	11:67ddc53e3983	1462
neilt6	11:67ddc53e3983	1463
neilt6	11:67ddc53e3983	1464
neilt6	11:67ddc53e3983	1465
neilt6	11:67ddc53e3983	1466	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1467	/* Read an object from the directory */
neilt6	11:67ddc53e3983	1468	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1469	#if _FS_MINIMIZE <= 1
neilt6	11:67ddc53e3983	1470	static
neilt6	11:67ddc53e3983	1471	FRESULT dir_read (
neilt6	11:67ddc53e3983	1472	FATFS_DIR dj / Pointer to the directory object that pointing the entry to be read */
neilt6	11:67ddc53e3983	1473	)
neilt6	11:67ddc53e3983	1474	{
neilt6	11:67ddc53e3983	1475	FRESULT res;
neilt6	11:67ddc53e3983	1476	BYTE c, *dir;
neilt6	11:67ddc53e3983	1477	#if _USE_LFN
neilt6	11:67ddc53e3983	1478	BYTE a, ord = 0xFF, sum = 0xFF;
neilt6	11:67ddc53e3983	1479	#endif
neilt6	11:67ddc53e3983	1480
neilt6	11:67ddc53e3983	1481	res = FR_NO_FILE;
neilt6	11:67ddc53e3983	1482	while (dj->sect) {
neilt6	11:67ddc53e3983	1483	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1484	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1485	dir = dj->dir; /* Ptr to the directory entry of current index */
neilt6	11:67ddc53e3983	1486	c = dir[DIR_Name];
neilt6	11:67ddc53e3983	1487	if (c == 0) {
neilt6	11:67ddc53e3983	1488	res = FR_NO_FILE; /* Reached to end of table */
neilt6	11:67ddc53e3983	1489	break;
neilt6	11:67ddc53e3983	1490	}
neilt6	11:67ddc53e3983	1491	#if _USE_LFN /* LFN configuration */
neilt6	11:67ddc53e3983	1492	a = dir[DIR_Attr] & AM_MASK;
neilt6	11:67ddc53e3983	1493	if (c == DDE \|\| (!_FS_RPATH && c == '.') \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
neilt6	11:67ddc53e3983	1494	ord = 0xFF;
neilt6	11:67ddc53e3983	1495	} else {
neilt6	11:67ddc53e3983	1496	if (a == AM_LFN) { /* An LFN entry is found */
neilt6	11:67ddc53e3983	1497	if (c & LLE) { /* Is it start of LFN sequence? */
neilt6	11:67ddc53e3983	1498	sum = dir[LDIR_Chksum];
neilt6	11:67ddc53e3983	1499	c &= ~LLE;
neilt6	11:67ddc53e3983	1500	ord = c;
neilt6	11:67ddc53e3983	1501	dj->lfn_idx = dj->index;
neilt6	11:67ddc53e3983	1502	}
neilt6	11:67ddc53e3983	1503	/* Check LFN validity and capture it */
neilt6	11:67ddc53e3983	1504	ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
neilt6	11:67ddc53e3983	1505	} else { /* An SFN entry is found */
neilt6	11:67ddc53e3983	1506	if (ord \|\| sum != sum_sfn(dir)) /* Is there a valid LFN? */
neilt6	11:67ddc53e3983	1507	dj->lfn_idx = 0xFFFF; /* It has no LFN. */
neilt6	11:67ddc53e3983	1508	break;
neilt6	11:67ddc53e3983	1509	}
neilt6	11:67ddc53e3983	1510	}
neilt6	11:67ddc53e3983	1511	#else /* Non LFN configuration */
neilt6	11:67ddc53e3983	1512	if (c != DDE && (_FS_RPATH \|\| c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
neilt6	11:67ddc53e3983	1513	break;
neilt6	11:67ddc53e3983	1514	#endif
neilt6	11:67ddc53e3983	1515	res = dir_next(dj, 0); /* Next entry */
neilt6	11:67ddc53e3983	1516	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1517	}
neilt6	11:67ddc53e3983	1518
neilt6	11:67ddc53e3983	1519	if (res != FR_OK) dj->sect = 0;
neilt6	11:67ddc53e3983	1520
neilt6	11:67ddc53e3983	1521	return res;
neilt6	11:67ddc53e3983	1522	}
neilt6	11:67ddc53e3983	1523	#endif
neilt6	11:67ddc53e3983	1524
neilt6	11:67ddc53e3983	1525
neilt6	11:67ddc53e3983	1526
neilt6	11:67ddc53e3983	1527	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1528	/* Register an object to the directory */
neilt6	11:67ddc53e3983	1529	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1530	#if !_FS_READONLY
neilt6	11:67ddc53e3983	1531	static
neilt6	11:67ddc53e3983	1532	FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
neilt6	11:67ddc53e3983	1533	FATFS_DIR dj / Target directory with object name to be created */
neilt6	11:67ddc53e3983	1534	)
neilt6	11:67ddc53e3983	1535	{
neilt6	11:67ddc53e3983	1536	FRESULT res;
neilt6	11:67ddc53e3983	1537	BYTE c, *dir;
neilt6	11:67ddc53e3983	1538	#if _USE_LFN /* LFN configuration */
neilt6	11:67ddc53e3983	1539	WORD n, ne, is;
neilt6	11:67ddc53e3983	1540	BYTE sn[12], *fn, sum;
neilt6	11:67ddc53e3983	1541	WCHAR *lfn;
neilt6	11:67ddc53e3983	1542
neilt6	11:67ddc53e3983	1543
neilt6	11:67ddc53e3983	1544	fn = dj->fn;
neilt6	11:67ddc53e3983	1545	lfn = dj->lfn;
neilt6	11:67ddc53e3983	1546	mem_cpy(sn, fn, 12);
neilt6	11:67ddc53e3983	1547
neilt6	11:67ddc53e3983	1548	if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
neilt6	11:67ddc53e3983	1549	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1550
neilt6	11:67ddc53e3983	1551	if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
neilt6	11:67ddc53e3983	1552	fn[NS] = 0;
neilt6	11:67ddc53e3983	1553	dj->lfn = 0; /* Find only SFN */
neilt6	11:67ddc53e3983	1554	for (n = 1; n < 100; n++) {
neilt6	11:67ddc53e3983	1555	gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
neilt6	11:67ddc53e3983	1556	res = dir_find(dj); /* Check if the name collides with existing SFN */
neilt6	11:67ddc53e3983	1557	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1558	}
neilt6	11:67ddc53e3983	1559	if (n == 100) return FR_DENIED; /* Abort if too many collisions */
neilt6	11:67ddc53e3983	1560	if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
neilt6	11:67ddc53e3983	1561	fn[NS] = sn[NS];
neilt6	11:67ddc53e3983	1562	dj->lfn = lfn;
neilt6	11:67ddc53e3983	1563	}
neilt6	11:67ddc53e3983	1564
neilt6	11:67ddc53e3983	1565	if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
neilt6	11:67ddc53e3983	1566	for (ne = 0; lfn[ne]; ne++) ;
neilt6	11:67ddc53e3983	1567	ne = (ne + 25) / 13;
neilt6	11:67ddc53e3983	1568	} else { /* Otherwise reserve only an SFN entry. */
neilt6	11:67ddc53e3983	1569	ne = 1;
neilt6	11:67ddc53e3983	1570	}
neilt6	11:67ddc53e3983	1571
neilt6	11:67ddc53e3983	1572	/* Reserve contiguous entries */
neilt6	11:67ddc53e3983	1573	res = dir_sdi(dj, 0);
neilt6	11:67ddc53e3983	1574	if (res != FR_OK) return res;
neilt6	11:67ddc53e3983	1575	n = is = 0;
neilt6	11:67ddc53e3983	1576	do {
neilt6	11:67ddc53e3983	1577	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1578	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1579	c = dj->dir; / Check the entry status */
neilt6	11:67ddc53e3983	1580	if (c == DDE \|\| c == 0) { /* Is it a blank entry? */
neilt6	11:67ddc53e3983	1581	if (n == 0) is = dj->index; /* First index of the contiguous entry */
neilt6	11:67ddc53e3983	1582	if (++n == ne) break; /* A contiguous entry that required count is found */
neilt6	11:67ddc53e3983	1583	} else {
neilt6	11:67ddc53e3983	1584	n = 0; /* Not a blank entry. Restart to search */
neilt6	11:67ddc53e3983	1585	}
neilt6	11:67ddc53e3983	1586	res = dir_next(dj, 1); /* Next entry with table stretch */
neilt6	11:67ddc53e3983	1587	} while (res == FR_OK);
neilt6	11:67ddc53e3983	1588
neilt6	11:67ddc53e3983	1589	if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
neilt6	11:67ddc53e3983	1590	res = dir_sdi(dj, is);
neilt6	11:67ddc53e3983	1591	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1592	sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
neilt6	11:67ddc53e3983	1593	ne--;
neilt6	11:67ddc53e3983	1594	do { /* Store LFN entries in bottom first */
neilt6	11:67ddc53e3983	1595	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1596	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1597	fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
neilt6	11:67ddc53e3983	1598	dj->fs->wflag = 1;
neilt6	11:67ddc53e3983	1599	res = dir_next(dj, 0); /* Next entry */
neilt6	11:67ddc53e3983	1600	} while (res == FR_OK && --ne);
neilt6	11:67ddc53e3983	1601	}
neilt6	11:67ddc53e3983	1602	}
neilt6	11:67ddc53e3983	1603
neilt6	11:67ddc53e3983	1604	#else /* Non LFN configuration */
neilt6	11:67ddc53e3983	1605	res = dir_sdi(dj, 0);
neilt6	11:67ddc53e3983	1606	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1607	do { /* Find a blank entry for the SFN */
neilt6	11:67ddc53e3983	1608	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1609	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1610	c = *dj->dir;
neilt6	11:67ddc53e3983	1611	if (c == DDE \|\| c == 0) break; /* Is it a blank entry? */
neilt6	11:67ddc53e3983	1612	res = dir_next(dj, 1); /* Next entry with table stretch */
neilt6	11:67ddc53e3983	1613	} while (res == FR_OK);
neilt6	11:67ddc53e3983	1614	}
neilt6	11:67ddc53e3983	1615	#endif
neilt6	11:67ddc53e3983	1616
neilt6	11:67ddc53e3983	1617	if (res == FR_OK) { /* Initialize the SFN entry */
neilt6	11:67ddc53e3983	1618	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1619	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1620	dir = dj->dir;
neilt6	11:67ddc53e3983	1621	mem_set(dir, 0, SZ_DIR); /* Clean the entry */
neilt6	11:67ddc53e3983	1622	mem_cpy(dir, dj->fn, 11); /* Put SFN */
neilt6	11:67ddc53e3983	1623	#if _USE_LFN
neilt6	11:67ddc53e3983	1624	dir[DIR_NTres] = (dj->fn+NS) & (NS_BODY \| NS_EXT); / Put NT flag */
neilt6	11:67ddc53e3983	1625	#endif
neilt6	11:67ddc53e3983	1626	dj->fs->wflag = 1;
neilt6	11:67ddc53e3983	1627	}
neilt6	11:67ddc53e3983	1628	}
neilt6	11:67ddc53e3983	1629
neilt6	11:67ddc53e3983	1630	return res;
neilt6	11:67ddc53e3983	1631	}
neilt6	11:67ddc53e3983	1632	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	1633
neilt6	11:67ddc53e3983	1634
neilt6	11:67ddc53e3983	1635
neilt6	11:67ddc53e3983	1636
neilt6	11:67ddc53e3983	1637	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1638	/* Remove an object from the directory */
neilt6	11:67ddc53e3983	1639	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1640	#if !_FS_READONLY && !_FS_MINIMIZE
neilt6	11:67ddc53e3983	1641	static
neilt6	11:67ddc53e3983	1642	FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
neilt6	11:67ddc53e3983	1643	FATFS_DIR dj / Directory object pointing the entry to be removed */
neilt6	11:67ddc53e3983	1644	)
neilt6	11:67ddc53e3983	1645	{
neilt6	11:67ddc53e3983	1646	FRESULT res;
neilt6	11:67ddc53e3983	1647	#if _USE_LFN /* LFN configuration */
neilt6	11:67ddc53e3983	1648	WORD i;
neilt6	11:67ddc53e3983	1649
neilt6	11:67ddc53e3983	1650	i = dj->index; /* SFN index */
neilt6	11:67ddc53e3983	1651	res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
neilt6	11:67ddc53e3983	1652	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1653	do {
neilt6	11:67ddc53e3983	1654	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1655	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	1656	dj->dir = DDE; / Mark the entry "deleted" */
neilt6	11:67ddc53e3983	1657	dj->fs->wflag = 1;
neilt6	11:67ddc53e3983	1658	if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
neilt6	11:67ddc53e3983	1659	res = dir_next(dj, 0); /* Next entry */
neilt6	11:67ddc53e3983	1660	} while (res == FR_OK);
neilt6	11:67ddc53e3983	1661	if (res == FR_NO_FILE) res = FR_INT_ERR;
neilt6	11:67ddc53e3983	1662	}
neilt6	11:67ddc53e3983	1663
neilt6	11:67ddc53e3983	1664	#else /* Non LFN configuration */
neilt6	11:67ddc53e3983	1665	res = dir_sdi(dj, dj->index);
neilt6	11:67ddc53e3983	1666	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1667	res = move_window(dj->fs, dj->sect);
neilt6	11:67ddc53e3983	1668	if (res == FR_OK) {
neilt6	11:67ddc53e3983	1669	dj->dir = DDE; / Mark the entry "deleted" */
neilt6	11:67ddc53e3983	1670	dj->fs->wflag = 1;
neilt6	11:67ddc53e3983	1671	}
neilt6	11:67ddc53e3983	1672	}
neilt6	11:67ddc53e3983	1673	#endif
neilt6	11:67ddc53e3983	1674
neilt6	11:67ddc53e3983	1675	return res;
neilt6	11:67ddc53e3983	1676	}
neilt6	11:67ddc53e3983	1677	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	1678
neilt6	11:67ddc53e3983	1679
neilt6	11:67ddc53e3983	1680
neilt6	11:67ddc53e3983	1681
neilt6	11:67ddc53e3983	1682	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1683	/* Pick a segment and create the object name in directory form */
neilt6	11:67ddc53e3983	1684	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1685
neilt6	11:67ddc53e3983	1686	static
neilt6	11:67ddc53e3983	1687	FRESULT create_name (
neilt6	11:67ddc53e3983	1688	FATFS_DIR dj, / Pointer to the directory object */
neilt6	11:67ddc53e3983	1689	const TCHAR *path / Pointer to pointer to the segment in the path string */
neilt6	11:67ddc53e3983	1690	)
neilt6	11:67ddc53e3983	1691	{
neilt6	11:67ddc53e3983	1692	#ifdef _EXCVT
neilt6	11:67ddc53e3983	1693	static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
neilt6	11:67ddc53e3983	1694	#endif
neilt6	11:67ddc53e3983	1695
neilt6	11:67ddc53e3983	1696	#if _USE_LFN /* LFN configuration */
neilt6	11:67ddc53e3983	1697	BYTE b, cf;
neilt6	11:67ddc53e3983	1698	WCHAR w, *lfn;
neilt6	11:67ddc53e3983	1699	UINT i, ni, si, di;
neilt6	11:67ddc53e3983	1700	const TCHAR *p;
neilt6	11:67ddc53e3983	1701
neilt6	11:67ddc53e3983	1702	/* Create LFN in Unicode */
neilt6	11:67ddc53e3983	1703	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
neilt6	11:67ddc53e3983	1704	lfn = dj->lfn;
neilt6	11:67ddc53e3983	1705	si = di = 0;
neilt6	11:67ddc53e3983	1706	for (;;) {
neilt6	11:67ddc53e3983	1707	w = p[si++]; /* Get a character */
neilt6	11:67ddc53e3983	1708	if (w < ' ' \|\| w == '/' \|\| w == '\\') break; /* Break on end of segment */
neilt6	11:67ddc53e3983	1709	if (di >= _MAX_LFN) /* Reject too long name */
neilt6	11:67ddc53e3983	1710	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1711	#if !_LFN_UNICODE
neilt6	11:67ddc53e3983	1712	w &= 0xFF;
neilt6	11:67ddc53e3983	1713	if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
neilt6	11:67ddc53e3983	1714	b = (BYTE)p[si++]; /* Get 2nd byte */
neilt6	11:67ddc53e3983	1715	if (!IsDBCS2(b))
neilt6	11:67ddc53e3983	1716	return FR_INVALID_NAME; /* Reject invalid sequence */
neilt6	11:67ddc53e3983	1717	else
neilt6	11:67ddc53e3983	1718	w = (w << 8) + b; /* Create a DBC */
neilt6	11:67ddc53e3983	1719	}
neilt6	11:67ddc53e3983	1720	w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
neilt6	11:67ddc53e3983	1721	if (!w) return FR_INVALID_NAME; /* Reject invalid code */
neilt6	11:67ddc53e3983	1722	#endif
neilt6	11:67ddc53e3983	1723	if (w < 0x80 && chk_chr("\":<>\?\|\x7F", w)) / Reject illegal chars for LFN */
neilt6	11:67ddc53e3983	1724	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1725	lfn[di++] = w; /* Store the Unicode char */
neilt6	11:67ddc53e3983	1726	}
neilt6	11:67ddc53e3983	1727	path = &p[si]; / Return pointer to the next segment */
neilt6	11:67ddc53e3983	1728	cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
neilt6	11:67ddc53e3983	1729	#if _FS_RPATH
neilt6	11:67ddc53e3983	1730	if ((di == 1 && lfn[di-1] == '.') \|\| /* Is this a dot entry? */
neilt6	11:67ddc53e3983	1731	(di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
neilt6	11:67ddc53e3983	1732	lfn[di] = 0;
neilt6	11:67ddc53e3983	1733	for (i = 0; i < 11; i++)
neilt6	11:67ddc53e3983	1734	dj->fn[i] = (i < di) ? '.' : ' ';
neilt6	11:67ddc53e3983	1735	dj->fn[i] = cf \| NS_DOT; /* This is a dot entry */
neilt6	11:67ddc53e3983	1736	return FR_OK;
neilt6	11:67ddc53e3983	1737	}
neilt6	11:67ddc53e3983	1738	#endif
neilt6	11:67ddc53e3983	1739	while (di) { /* Strip trailing spaces and dots */
neilt6	11:67ddc53e3983	1740	w = lfn[di-1];
neilt6	11:67ddc53e3983	1741	if (w != ' ' && w != '.') break;
neilt6	11:67ddc53e3983	1742	di--;
neilt6	11:67ddc53e3983	1743	}
neilt6	11:67ddc53e3983	1744	if (!di) return FR_INVALID_NAME; /* Reject nul string */
neilt6	11:67ddc53e3983	1745
neilt6	11:67ddc53e3983	1746	lfn[di] = 0; /* LFN is created */
neilt6	11:67ddc53e3983	1747
neilt6	11:67ddc53e3983	1748	/* Create SFN in directory form */
neilt6	11:67ddc53e3983	1749	mem_set(dj->fn, ' ', 11);
neilt6	11:67ddc53e3983	1750	for (si = 0; lfn[si] == ' ' \|\| lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
neilt6	11:67ddc53e3983	1751	if (si) cf \|= NS_LOSS \| NS_LFN;
neilt6	11:67ddc53e3983	1752	while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
neilt6	11:67ddc53e3983	1753
neilt6	11:67ddc53e3983	1754	b = i = 0;
neilt6	11:67ddc53e3983	1755	ni = 8;
neilt6	11:67ddc53e3983	1756	for (;;) {
neilt6	11:67ddc53e3983	1757	w = lfn[si++]; /* Get an LFN char */
neilt6	11:67ddc53e3983	1758	if (!w) break; /* Break on end of the LFN */
neilt6	11:67ddc53e3983	1759	if (w == ' ' \|\| (w == '.' && si != di)) { /* Remove spaces and dots */
neilt6	11:67ddc53e3983	1760	cf \|= NS_LOSS \| NS_LFN;
neilt6	11:67ddc53e3983	1761	continue;
neilt6	11:67ddc53e3983	1762	}
neilt6	11:67ddc53e3983	1763
neilt6	11:67ddc53e3983	1764	if (i >= ni \|\| si == di) { /* Extension or end of SFN */
neilt6	11:67ddc53e3983	1765	if (ni == 11) { /* Long extension */
neilt6	11:67ddc53e3983	1766	cf \|= NS_LOSS \| NS_LFN;
neilt6	11:67ddc53e3983	1767	break;
neilt6	11:67ddc53e3983	1768	}
neilt6	11:67ddc53e3983	1769	if (si != di) cf \|= NS_LOSS \| NS_LFN; /* Out of 8.3 format */
neilt6	11:67ddc53e3983	1770	if (si > di) break; /* No extension */
neilt6	11:67ddc53e3983	1771	si = di;
neilt6	11:67ddc53e3983	1772	i = 8;
neilt6	11:67ddc53e3983	1773	ni = 11; /* Enter extension section */
neilt6	11:67ddc53e3983	1774	b <<= 2;
neilt6	11:67ddc53e3983	1775	continue;
neilt6	11:67ddc53e3983	1776	}
neilt6	11:67ddc53e3983	1777
neilt6	11:67ddc53e3983	1778	if (w >= 0x80) { /* Non ASCII char */
neilt6	11:67ddc53e3983	1779	#ifdef _EXCVT
neilt6	11:67ddc53e3983	1780	w = ff_convert(w, 0); /* Unicode -> OEM code */
neilt6	11:67ddc53e3983	1781	if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
neilt6	11:67ddc53e3983	1782	#else
neilt6	11:67ddc53e3983	1783	w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
neilt6	11:67ddc53e3983	1784	#endif
neilt6	11:67ddc53e3983	1785	cf \|= NS_LFN; /* Force create LFN entry */
neilt6	11:67ddc53e3983	1786	}
neilt6	11:67ddc53e3983	1787
neilt6	11:67ddc53e3983	1788	if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
neilt6	11:67ddc53e3983	1789	if (i >= ni - 1) {
neilt6	11:67ddc53e3983	1790	cf \|= NS_LOSS \| NS_LFN;
neilt6	11:67ddc53e3983	1791	i = ni;
neilt6	11:67ddc53e3983	1792	continue;
neilt6	11:67ddc53e3983	1793	}
neilt6	11:67ddc53e3983	1794	dj->fn[i++] = (BYTE)(w >> 8);
neilt6	11:67ddc53e3983	1795	} else { /* Single byte char */
neilt6	11:67ddc53e3983	1796	if (!w \|\| chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
neilt6	11:67ddc53e3983	1797	w = '_';
neilt6	11:67ddc53e3983	1798	cf \|= NS_LOSS \| NS_LFN;/* Lossy conversion */
neilt6	11:67ddc53e3983	1799	} else {
neilt6	11:67ddc53e3983	1800	if (IsUpper(w)) { /* ASCII large capital */
neilt6	11:67ddc53e3983	1801	b \|= 2;
neilt6	11:67ddc53e3983	1802	} else {
neilt6	11:67ddc53e3983	1803	if (IsLower(w)) { /* ASCII small capital */
neilt6	11:67ddc53e3983	1804	b \|= 1;
neilt6	11:67ddc53e3983	1805	w -= 0x20;
neilt6	11:67ddc53e3983	1806	}
neilt6	11:67ddc53e3983	1807	}
neilt6	11:67ddc53e3983	1808	}
neilt6	11:67ddc53e3983	1809	}
neilt6	11:67ddc53e3983	1810	dj->fn[i++] = (BYTE)w;
neilt6	11:67ddc53e3983	1811	}
neilt6	11:67ddc53e3983	1812
neilt6	11:67ddc53e3983	1813	if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
neilt6	11:67ddc53e3983	1814
neilt6	11:67ddc53e3983	1815	if (ni == 8) b <<= 2;
neilt6	11:67ddc53e3983	1816	if ((b & 0x0C) == 0x0C \|\| (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
neilt6	11:67ddc53e3983	1817	cf \|= NS_LFN;
neilt6	11:67ddc53e3983	1818	if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
neilt6	11:67ddc53e3983	1819	if ((b & 0x03) == 0x01) cf \|= NS_EXT; /* NT flag (Extension has only small capital) */
neilt6	11:67ddc53e3983	1820	if ((b & 0x0C) == 0x04) cf \|= NS_BODY; /* NT flag (Filename has only small capital) */
neilt6	11:67ddc53e3983	1821	}
neilt6	11:67ddc53e3983	1822
neilt6	11:67ddc53e3983	1823	dj->fn[NS] = cf; /* SFN is created */
neilt6	11:67ddc53e3983	1824
neilt6	11:67ddc53e3983	1825	return FR_OK;
neilt6	11:67ddc53e3983	1826
neilt6	11:67ddc53e3983	1827
neilt6	11:67ddc53e3983	1828	#else /* Non-LFN configuration */
neilt6	11:67ddc53e3983	1829	BYTE b, c, d, *sfn;
neilt6	11:67ddc53e3983	1830	UINT ni, si, i;
neilt6	11:67ddc53e3983	1831	const char *p;
neilt6	11:67ddc53e3983	1832
neilt6	11:67ddc53e3983	1833	/* Create file name in directory form */
neilt6	11:67ddc53e3983	1834	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
neilt6	11:67ddc53e3983	1835	sfn = dj->fn;
neilt6	11:67ddc53e3983	1836	mem_set(sfn, ' ', 11);
neilt6	11:67ddc53e3983	1837	si = i = b = 0;
neilt6	11:67ddc53e3983	1838	ni = 8;
neilt6	11:67ddc53e3983	1839	#if _FS_RPATH
neilt6	11:67ddc53e3983	1840	if (p[si] == '.') { /* Is this a dot entry? */
neilt6	11:67ddc53e3983	1841	for (;;) {
neilt6	11:67ddc53e3983	1842	c = (BYTE)p[si++];
neilt6	11:67ddc53e3983	1843	if (c != '.' \|\| si >= 3) break;
neilt6	11:67ddc53e3983	1844	sfn[i++] = c;
neilt6	11:67ddc53e3983	1845	}
neilt6	11:67ddc53e3983	1846	if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1847	path = &p[si]; / Return pointer to the next segment */
neilt6	11:67ddc53e3983	1848	sfn[NS] = (c <= ' ') ? NS_LAST \| NS_DOT : NS_DOT; /* Set last segment flag if end of path */
neilt6	11:67ddc53e3983	1849	return FR_OK;
neilt6	11:67ddc53e3983	1850	}
neilt6	11:67ddc53e3983	1851	#endif
neilt6	11:67ddc53e3983	1852	for (;;) {
neilt6	11:67ddc53e3983	1853	c = (BYTE)p[si++];
neilt6	11:67ddc53e3983	1854	if (c <= ' ' \|\| c == '/' \|\| c == '\\') break; /* Break on end of segment */
neilt6	11:67ddc53e3983	1855	if (c == '.' \|\| i >= ni) {
neilt6	11:67ddc53e3983	1856	if (ni != 8 \|\| c != '.') return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1857	i = 8;
neilt6	11:67ddc53e3983	1858	ni = 11;
neilt6	11:67ddc53e3983	1859	b <<= 2;
neilt6	11:67ddc53e3983	1860	continue;
neilt6	11:67ddc53e3983	1861	}
neilt6	11:67ddc53e3983	1862	if (c >= 0x80) { /* Extended char? */
neilt6	11:67ddc53e3983	1863	b \|= 3; /* Eliminate NT flag */
neilt6	11:67ddc53e3983	1864	#ifdef _EXCVT
neilt6	11:67ddc53e3983	1865	c = excvt[c - 0x80]; /* Upper conversion (SBCS) */
neilt6	11:67ddc53e3983	1866	#else
neilt6	11:67ddc53e3983	1867	#if !_DF1S /* ASCII only cfg */
neilt6	11:67ddc53e3983	1868	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1869	#endif
neilt6	11:67ddc53e3983	1870	#endif
neilt6	11:67ddc53e3983	1871	}
neilt6	11:67ddc53e3983	1872	if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
neilt6	11:67ddc53e3983	1873	d = (BYTE)p[si++]; /* Get 2nd byte */
neilt6	11:67ddc53e3983	1874	if (!IsDBCS2(d) \|\| i >= ni - 1) /* Reject invalid DBC */
neilt6	11:67ddc53e3983	1875	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1876	sfn[i++] = c;
neilt6	11:67ddc53e3983	1877	sfn[i++] = d;
neilt6	11:67ddc53e3983	1878	} else { /* Single byte code */
neilt6	11:67ddc53e3983	1879	if (chk_chr("\"+,:;<=>\?[]\|\x7F", c)) / Reject illegal chrs for SFN */
neilt6	11:67ddc53e3983	1880	return FR_INVALID_NAME;
neilt6	11:67ddc53e3983	1881	if (IsUpper(c)) { /* ASCII large capital? */
neilt6	11:67ddc53e3983	1882	b \|= 2;
neilt6	11:67ddc53e3983	1883	} else {
neilt6	11:67ddc53e3983	1884	if (IsLower(c)) { /* ASCII small capital? */
neilt6	11:67ddc53e3983	1885	b \|= 1;
neilt6	11:67ddc53e3983	1886	c -= 0x20;
neilt6	11:67ddc53e3983	1887	}
neilt6	11:67ddc53e3983	1888	}
neilt6	11:67ddc53e3983	1889	sfn[i++] = c;
neilt6	11:67ddc53e3983	1890	}
neilt6	11:67ddc53e3983	1891	}
neilt6	11:67ddc53e3983	1892	path = &p[si]; / Return pointer to the next segment */
neilt6	11:67ddc53e3983	1893	c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
neilt6	11:67ddc53e3983	1894
neilt6	11:67ddc53e3983	1895	if (!i) return FR_INVALID_NAME; /* Reject nul string */
neilt6	11:67ddc53e3983	1896	if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
neilt6	11:67ddc53e3983	1897
neilt6	11:67ddc53e3983	1898	if (ni == 8) b <<= 2;
neilt6	11:67ddc53e3983	1899	if ((b & 0x03) == 0x01) c \|= NS_EXT; /* NT flag (Name extension has only small capital) */
neilt6	11:67ddc53e3983	1900	if ((b & 0x0C) == 0x04) c \|= NS_BODY; /* NT flag (Name body has only small capital) */
neilt6	11:67ddc53e3983	1901
neilt6	11:67ddc53e3983	1902	sfn[NS] = c; /* Store NT flag, File name is created */
neilt6	11:67ddc53e3983	1903
neilt6	11:67ddc53e3983	1904	return FR_OK;
neilt6	11:67ddc53e3983	1905	#endif
neilt6	11:67ddc53e3983	1906	}
neilt6	11:67ddc53e3983	1907
neilt6	11:67ddc53e3983	1908
neilt6	11:67ddc53e3983	1909
neilt6	11:67ddc53e3983	1910
neilt6	11:67ddc53e3983	1911	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1912	/* Get file information from directory entry */
neilt6	11:67ddc53e3983	1913	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	1914	#if _FS_MINIMIZE <= 1
neilt6	11:67ddc53e3983	1915	static
neilt6	11:67ddc53e3983	1916	void get_fileinfo ( /* No return code */
neilt6	11:67ddc53e3983	1917	FATFS_DIR dj, / Pointer to the directory object */
neilt6	11:67ddc53e3983	1918	FILINFO fno / Pointer to the file information to be filled */
neilt6	11:67ddc53e3983	1919	)
neilt6	11:67ddc53e3983	1920	{
neilt6	11:67ddc53e3983	1921	UINT i;
neilt6	11:67ddc53e3983	1922	BYTE nt, *dir;
neilt6	11:67ddc53e3983	1923	TCHAR *p, c;
neilt6	11:67ddc53e3983	1924
neilt6	11:67ddc53e3983	1925
neilt6	11:67ddc53e3983	1926	p = fno->fname;
neilt6	11:67ddc53e3983	1927	if (dj->sect) {
neilt6	11:67ddc53e3983	1928	dir = dj->dir;
neilt6	11:67ddc53e3983	1929	nt = dir[DIR_NTres]; /* NT flag */
neilt6	11:67ddc53e3983	1930	for (i = 0; i < 8; i++) { /* Copy name body */
neilt6	11:67ddc53e3983	1931	c = dir[i];
neilt6	11:67ddc53e3983	1932	if (c == ' ') break;
neilt6	11:67ddc53e3983	1933	if (c == NDDE) c = (TCHAR)DDE;
neilt6	11:67ddc53e3983	1934	if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
neilt6	11:67ddc53e3983	1935	#if _LFN_UNICODE
neilt6	11:67ddc53e3983	1936	if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
neilt6	11:67ddc53e3983	1937	c = (c << 8) \| dir[++i];
neilt6	11:67ddc53e3983	1938	c = ff_convert(c, 1);
neilt6	11:67ddc53e3983	1939	if (!c) c = '?';
neilt6	11:67ddc53e3983	1940	#endif
neilt6	11:67ddc53e3983	1941	*p++ = c;
neilt6	11:67ddc53e3983	1942	}
neilt6	11:67ddc53e3983	1943	if (dir[8] != ' ') { /* Copy name extension */
neilt6	11:67ddc53e3983	1944	*p++ = '.';
neilt6	11:67ddc53e3983	1945	for (i = 8; i < 11; i++) {
neilt6	11:67ddc53e3983	1946	c = dir[i];
neilt6	11:67ddc53e3983	1947	if (c == ' ') break;
neilt6	11:67ddc53e3983	1948	if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
neilt6	11:67ddc53e3983	1949	#if _LFN_UNICODE
neilt6	11:67ddc53e3983	1950	if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
neilt6	11:67ddc53e3983	1951	c = (c << 8) \| dir[++i];
neilt6	11:67ddc53e3983	1952	c = ff_convert(c, 1);
neilt6	11:67ddc53e3983	1953	if (!c) c = '?';
neilt6	11:67ddc53e3983	1954	#endif
neilt6	11:67ddc53e3983	1955	*p++ = c;
neilt6	11:67ddc53e3983	1956	}
neilt6	11:67ddc53e3983	1957	}
neilt6	11:67ddc53e3983	1958	fno->fattrib = dir[DIR_Attr]; /* Attribute */
neilt6	11:67ddc53e3983	1959	fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
neilt6	11:67ddc53e3983	1960	fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
neilt6	11:67ddc53e3983	1961	fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
neilt6	11:67ddc53e3983	1962	}
neilt6	11:67ddc53e3983	1963	p = 0; / Terminate SFN str by a \0 */
neilt6	11:67ddc53e3983	1964
neilt6	11:67ddc53e3983	1965	#if _USE_LFN
neilt6	11:67ddc53e3983	1966	if (fno->lfname && fno->lfsize) {
neilt6	11:67ddc53e3983	1967	TCHAR *tp = fno->lfname;
neilt6	11:67ddc53e3983	1968	WCHAR w, *lfn;
neilt6	11:67ddc53e3983	1969
neilt6	11:67ddc53e3983	1970	i = 0;
neilt6	11:67ddc53e3983	1971	if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
neilt6	11:67ddc53e3983	1972	lfn = dj->lfn;
neilt6	11:67ddc53e3983	1973	while ((w = lfn++) != 0) { / Get an LFN char */
neilt6	11:67ddc53e3983	1974	#if !_LFN_UNICODE
neilt6	11:67ddc53e3983	1975	w = ff_convert(w, 0); /* Unicode -> OEM conversion */
neilt6	11:67ddc53e3983	1976	if (!w) {
neilt6	11:67ddc53e3983	1977	i = 0; /* Could not convert, no LFN */
neilt6	11:67ddc53e3983	1978	break;
neilt6	11:67ddc53e3983	1979	}
neilt6	11:67ddc53e3983	1980	if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
neilt6	11:67ddc53e3983	1981	tp[i++] = (TCHAR)(w >> 8);
neilt6	11:67ddc53e3983	1982	#endif
neilt6	11:67ddc53e3983	1983	if (i >= fno->lfsize - 1) {
neilt6	11:67ddc53e3983	1984	i = 0; /* Buffer overflow, no LFN */
neilt6	11:67ddc53e3983	1985	break;
neilt6	11:67ddc53e3983	1986	}
neilt6	11:67ddc53e3983	1987	tp[i++] = (TCHAR)w;
neilt6	11:67ddc53e3983	1988	}
neilt6	11:67ddc53e3983	1989	}
neilt6	11:67ddc53e3983	1990	tp[i] = 0; /* Terminate the LFN str by a \0 */
neilt6	11:67ddc53e3983	1991	}
neilt6	11:67ddc53e3983	1992	#endif
neilt6	11:67ddc53e3983	1993	}
neilt6	11:67ddc53e3983	1994	#endif /* _FS_MINIMIZE <= 1 */
neilt6	11:67ddc53e3983	1995
neilt6	11:67ddc53e3983	1996
neilt6	11:67ddc53e3983	1997
neilt6	11:67ddc53e3983	1998
neilt6	11:67ddc53e3983	1999	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2000	/* Follow a file path */
neilt6	11:67ddc53e3983	2001	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2002
neilt6	11:67ddc53e3983	2003	static
neilt6	11:67ddc53e3983	2004	FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
neilt6	11:67ddc53e3983	2005	FATFS_DIR dj, / Directory object to return last directory and found object */
neilt6	11:67ddc53e3983	2006	const TCHAR path / Full-path string to find a file or directory */
neilt6	11:67ddc53e3983	2007	)
neilt6	11:67ddc53e3983	2008	{
neilt6	11:67ddc53e3983	2009	FRESULT res;
neilt6	11:67ddc53e3983	2010	BYTE *dir, ns;
neilt6	11:67ddc53e3983	2011
neilt6	11:67ddc53e3983	2012
neilt6	11:67ddc53e3983	2013	#if _FS_RPATH
neilt6	11:67ddc53e3983	2014	if (path == '/' \|\| path == '\\') { /* There is a heading separator */
neilt6	11:67ddc53e3983	2015	path++;
neilt6	11:67ddc53e3983	2016	dj->sclust = 0; /* Strip it and start from the root dir */
neilt6	11:67ddc53e3983	2017	} else { /* No heading separator */
neilt6	11:67ddc53e3983	2018	dj->sclust = dj->fs->cdir; /* Start from the current dir */
neilt6	11:67ddc53e3983	2019	}
neilt6	11:67ddc53e3983	2020	#else
neilt6	11:67ddc53e3983	2021	if (path == '/' \|\| path == '\\') /* Strip heading separator if exist */
neilt6	11:67ddc53e3983	2022	path++;
neilt6	11:67ddc53e3983	2023	dj->sclust = 0; /* Start from the root dir */
neilt6	11:67ddc53e3983	2024	#endif
neilt6	11:67ddc53e3983	2025
neilt6	11:67ddc53e3983	2026	if ((UINT)path < ' ') { / Nul path means the start directory itself */
neilt6	11:67ddc53e3983	2027	res = dir_sdi(dj, 0);
neilt6	11:67ddc53e3983	2028	dj->dir = 0;
neilt6	11:67ddc53e3983	2029	} else { /* Follow path */
neilt6	11:67ddc53e3983	2030	for (;;) {
neilt6	11:67ddc53e3983	2031	res = create_name(dj, &path); /* Get a segment */
neilt6	11:67ddc53e3983	2032	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2033	res = dir_find(dj); /* Find it */
neilt6	11:67ddc53e3983	2034	ns = *(dj->fn+NS);
neilt6	11:67ddc53e3983	2035	if (res != FR_OK) { /* Failed to find the object */
neilt6	11:67ddc53e3983	2036	if (res != FR_NO_FILE) break; /* Abort if any hard error occurred */
neilt6	11:67ddc53e3983	2037	/* Object not found */
neilt6	11:67ddc53e3983	2038	if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
neilt6	11:67ddc53e3983	2039	dj->sclust = 0;
neilt6	11:67ddc53e3983	2040	dj->dir = 0; /* It is the root dir */
neilt6	11:67ddc53e3983	2041	res = FR_OK;
neilt6	11:67ddc53e3983	2042	if (!(ns & NS_LAST)) continue;
neilt6	11:67ddc53e3983	2043	} else { /* Could not find the object */
neilt6	11:67ddc53e3983	2044	if (!(ns & NS_LAST)) res = FR_NO_PATH;
neilt6	11:67ddc53e3983	2045	}
neilt6	11:67ddc53e3983	2046	break;
neilt6	11:67ddc53e3983	2047	}
neilt6	11:67ddc53e3983	2048	if (ns & NS_LAST) break; /* Last segment match. Function completed. */
neilt6	11:67ddc53e3983	2049	dir = dj->dir; /* There is next segment. Follow the sub directory */
neilt6	11:67ddc53e3983	2050	if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
neilt6	11:67ddc53e3983	2051	res = FR_NO_PATH;
neilt6	11:67ddc53e3983	2052	break;
neilt6	11:67ddc53e3983	2053	}
neilt6	11:67ddc53e3983	2054	dj->sclust = ld_clust(dj->fs, dir);
neilt6	11:67ddc53e3983	2055	}
neilt6	11:67ddc53e3983	2056	}
neilt6	11:67ddc53e3983	2057
neilt6	11:67ddc53e3983	2058	return res;
neilt6	11:67ddc53e3983	2059	}
neilt6	11:67ddc53e3983	2060
neilt6	11:67ddc53e3983	2061
neilt6	11:67ddc53e3983	2062
neilt6	11:67ddc53e3983	2063
neilt6	11:67ddc53e3983	2064	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2065	/* Load a sector and check if it is an FAT Volume Boot Record */
neilt6	11:67ddc53e3983	2066	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2067
neilt6	11:67ddc53e3983	2068	static
neilt6	11:67ddc53e3983	2069	BYTE check_fs ( /* 0:FAT-VBR, 1:Any BR but not FAT, 2:Not a BR, 3:Disk error */
neilt6	11:67ddc53e3983	2070	FATFS fs, / File system object */
neilt6	11:67ddc53e3983	2071	DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
neilt6	11:67ddc53e3983	2072	)
neilt6	11:67ddc53e3983	2073	{
neilt6	11:67ddc53e3983	2074	if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
neilt6	11:67ddc53e3983	2075	return 3;
neilt6	11:67ddc53e3983	2076	if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
neilt6	11:67ddc53e3983	2077	return 2;
neilt6	11:67ddc53e3983	2078
neilt6	11:67ddc53e3983	2079	if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
neilt6	11:67ddc53e3983	2080	return 0;
neilt6	11:67ddc53e3983	2081	if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
neilt6	11:67ddc53e3983	2082	return 0;
neilt6	11:67ddc53e3983	2083
neilt6	11:67ddc53e3983	2084	return 1;
neilt6	11:67ddc53e3983	2085	}
neilt6	11:67ddc53e3983	2086
neilt6	11:67ddc53e3983	2087
neilt6	11:67ddc53e3983	2088
neilt6	11:67ddc53e3983	2089
neilt6	11:67ddc53e3983	2090	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2091	/* Check if the file system object is valid or not */
neilt6	11:67ddc53e3983	2092	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2093
neilt6	11:67ddc53e3983	2094	static
neilt6	11:67ddc53e3983	2095	FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
neilt6	11:67ddc53e3983	2096	const TCHAR *path, / Pointer to pointer to the path name (drive number) */
neilt6	11:67ddc53e3983	2097	FATFS *rfs, / Pointer to pointer to the found file system object */
neilt6	11:67ddc53e3983	2098	BYTE wmode /* !=0: Check write protection for write access */
neilt6	11:67ddc53e3983	2099	)
neilt6	11:67ddc53e3983	2100	{
neilt6	11:67ddc53e3983	2101	BYTE fmt, b, pi, *tbl;
neilt6	11:67ddc53e3983	2102	UINT vol;
neilt6	11:67ddc53e3983	2103	DSTATUS stat;
neilt6	11:67ddc53e3983	2104	DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
neilt6	11:67ddc53e3983	2105	WORD nrsv;
neilt6	11:67ddc53e3983	2106	const TCHAR p = path;
neilt6	11:67ddc53e3983	2107	FATFS *fs;
neilt6	11:67ddc53e3983	2108
neilt6	11:67ddc53e3983	2109
neilt6	11:67ddc53e3983	2110	/* Get logical drive number from the path name */
neilt6	11:67ddc53e3983	2111	vol = p[0] - '0'; /* Is there a drive number? */
neilt6	11:67ddc53e3983	2112	if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
neilt6	11:67ddc53e3983	2113	p += 2;
neilt6	11:67ddc53e3983	2114	path = p; / Return pointer to the path name */
neilt6	11:67ddc53e3983	2115	} else { /* No drive number is given */
neilt6	11:67ddc53e3983	2116	#if _FS_RPATH
neilt6	11:67ddc53e3983	2117	vol = CurrVol; /* Use current drive */
neilt6	11:67ddc53e3983	2118	#else
neilt6	11:67ddc53e3983	2119	vol = 0; /* Use drive 0 */
neilt6	11:67ddc53e3983	2120	#endif
neilt6	11:67ddc53e3983	2121	}
neilt6	11:67ddc53e3983	2122
neilt6	11:67ddc53e3983	2123	/* Check if the file system object is valid or not */
neilt6	11:67ddc53e3983	2124	*rfs = 0;
neilt6	11:67ddc53e3983	2125	if (vol >= _VOLUMES) /* Is the drive number valid? */
neilt6	11:67ddc53e3983	2126	return FR_INVALID_DRIVE;
neilt6	11:67ddc53e3983	2127	fs = FatFs[vol]; /* Get corresponding file system object */
neilt6	11:67ddc53e3983	2128	if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
neilt6	11:67ddc53e3983	2129
neilt6	11:67ddc53e3983	2130	ENTER_FF(fs); /* Lock file system */
neilt6	11:67ddc53e3983	2131
neilt6	11:67ddc53e3983	2132	rfs = fs; / Return pointer to the corresponding file system object */
neilt6	11:67ddc53e3983	2133	if (fs->fs_type) { /* If the volume has been mounted */
neilt6	11:67ddc53e3983	2134	stat = disk_status(fs->drv);
neilt6	11:67ddc53e3983	2135	if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
neilt6	11:67ddc53e3983	2136	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
neilt6	11:67ddc53e3983	2137	return FR_WRITE_PROTECTED;
neilt6	11:67ddc53e3983	2138	return FR_OK; /* The file system object is valid */
neilt6	11:67ddc53e3983	2139	}
neilt6	11:67ddc53e3983	2140	}
neilt6	11:67ddc53e3983	2141
neilt6	11:67ddc53e3983	2142	/* The file system object is not valid. */
neilt6	11:67ddc53e3983	2143	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
neilt6	11:67ddc53e3983	2144
neilt6	11:67ddc53e3983	2145	fs->fs_type = 0; /* Clear the file system object */
neilt6	11:67ddc53e3983	2146	fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
neilt6	11:67ddc53e3983	2147	stat = disk_initialize(fs->drv); /* Initialize the physical drive */
neilt6	11:67ddc53e3983	2148	if (stat & STA_NOINIT) /* Check if the initialization succeeded */
neilt6	11:67ddc53e3983	2149	return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
neilt6	11:67ddc53e3983	2150	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
neilt6	11:67ddc53e3983	2151	return FR_WRITE_PROTECTED;
neilt6	11:67ddc53e3983	2152	#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
neilt6	11:67ddc53e3983	2153	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
neilt6	11:67ddc53e3983	2154	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	2155	#endif
neilt6	11:67ddc53e3983	2156	/* Search FAT partition on the drive. Supports only generic partitions, FDISK and SFD. */
neilt6	11:67ddc53e3983	2157	fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */
neilt6	11:67ddc53e3983	2158	if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */
neilt6	11:67ddc53e3983	2159	if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */
neilt6	11:67ddc53e3983	2160	/* Check the partition listed in the partition table */
neilt6	11:67ddc53e3983	2161	pi = LD2PT(vol);
neilt6	11:67ddc53e3983	2162	if (pi) pi--;
neilt6	11:67ddc53e3983	2163	tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */
neilt6	11:67ddc53e3983	2164	if (tbl[4]) { /* Is the partition existing? */
neilt6	11:67ddc53e3983	2165	bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
neilt6	11:67ddc53e3983	2166	fmt = check_fs(fs, bsect); /* Check the partition */
neilt6	11:67ddc53e3983	2167	}
neilt6	11:67ddc53e3983	2168	}
neilt6	11:67ddc53e3983	2169	if (fmt == 3) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	2170	if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
neilt6	11:67ddc53e3983	2171
neilt6	11:67ddc53e3983	2172	/* An FAT volume is found. Following code initializes the file system object */
neilt6	11:67ddc53e3983	2173
neilt6	11:67ddc53e3983	2174	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
neilt6	11:67ddc53e3983	2175	return FR_NO_FILESYSTEM;
neilt6	11:67ddc53e3983	2176
neilt6	11:67ddc53e3983	2177	fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
neilt6	11:67ddc53e3983	2178	if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
neilt6	11:67ddc53e3983	2179	fs->fsize = fasize;
neilt6	11:67ddc53e3983	2180
neilt6	11:67ddc53e3983	2181	fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
neilt6	11:67ddc53e3983	2182	if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
neilt6	11:67ddc53e3983	2183	fasize = b; / Number of sectors for FAT area */
neilt6	11:67ddc53e3983	2184
neilt6	11:67ddc53e3983	2185	fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
neilt6	11:67ddc53e3983	2186	if (!b \|\| (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
neilt6	11:67ddc53e3983	2187
neilt6	11:67ddc53e3983	2188	fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
neilt6	11:67ddc53e3983	2189	if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
neilt6	11:67ddc53e3983	2190
neilt6	11:67ddc53e3983	2191	tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
neilt6	11:67ddc53e3983	2192	if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
neilt6	11:67ddc53e3983	2193
neilt6	11:67ddc53e3983	2194	nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
neilt6	11:67ddc53e3983	2195	if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
neilt6	11:67ddc53e3983	2196
neilt6	11:67ddc53e3983	2197	/* Determine the FAT sub type */
neilt6	11:67ddc53e3983	2198	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
neilt6	11:67ddc53e3983	2199	if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
neilt6	11:67ddc53e3983	2200	nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
neilt6	11:67ddc53e3983	2201	if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
neilt6	11:67ddc53e3983	2202	fmt = FS_FAT12;
neilt6	11:67ddc53e3983	2203	if (nclst >= MIN_FAT16) fmt = FS_FAT16;
neilt6	11:67ddc53e3983	2204	if (nclst >= MIN_FAT32) fmt = FS_FAT32;
neilt6	11:67ddc53e3983	2205
neilt6	11:67ddc53e3983	2206	/* Boundaries and Limits */
neilt6	11:67ddc53e3983	2207	fs->n_fatent = nclst + 2; /* Number of FAT entries */
neilt6	11:67ddc53e3983	2208	fs->database = bsect + sysect; /* Data start sector */
neilt6	11:67ddc53e3983	2209	fs->fatbase = bsect + nrsv; /* FAT start sector */
neilt6	11:67ddc53e3983	2210	if (fmt == FS_FAT32) {
neilt6	11:67ddc53e3983	2211	if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
neilt6	11:67ddc53e3983	2212	fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
neilt6	11:67ddc53e3983	2213	szbfat = fs->n_fatent * 4; /* (Required FAT size) */
neilt6	11:67ddc53e3983	2214	} else {
neilt6	11:67ddc53e3983	2215	if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
neilt6	11:67ddc53e3983	2216	fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
neilt6	11:67ddc53e3983	2217	szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
neilt6	11:67ddc53e3983	2218	fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
neilt6	11:67ddc53e3983	2219	}
neilt6	11:67ddc53e3983	2220	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
neilt6	11:67ddc53e3983	2221	return FR_NO_FILESYSTEM;
neilt6	11:67ddc53e3983	2222
neilt6	11:67ddc53e3983	2223	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2224	/* Initialize cluster allocation information */
neilt6	11:67ddc53e3983	2225	fs->free_clust = 0xFFFFFFFF;
neilt6	11:67ddc53e3983	2226	fs->last_clust = 0;
neilt6	11:67ddc53e3983	2227
neilt6	11:67ddc53e3983	2228	/* Get fsinfo if available */
neilt6	11:67ddc53e3983	2229	if (fmt == FS_FAT32) {
neilt6	11:67ddc53e3983	2230	fs->fsi_flag = 0;
neilt6	11:67ddc53e3983	2231	fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
neilt6	11:67ddc53e3983	2232	if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
neilt6	11:67ddc53e3983	2233	LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
neilt6	11:67ddc53e3983	2234	LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
neilt6	11:67ddc53e3983	2235	LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
neilt6	11:67ddc53e3983	2236	fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
neilt6	11:67ddc53e3983	2237	fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
neilt6	11:67ddc53e3983	2238	}
neilt6	11:67ddc53e3983	2239	}
neilt6	11:67ddc53e3983	2240	#endif
neilt6	11:67ddc53e3983	2241	fs->fs_type = fmt; /* FAT sub-type */
neilt6	11:67ddc53e3983	2242	fs->id = ++Fsid; /* File system mount ID */
neilt6	11:67ddc53e3983	2243	fs->winsect = 0; /* Invalidate sector cache */
neilt6	11:67ddc53e3983	2244	fs->wflag = 0;
neilt6	11:67ddc53e3983	2245	#if _FS_RPATH
neilt6	11:67ddc53e3983	2246	fs->cdir = 0; /* Current directory (root dir) */
neilt6	11:67ddc53e3983	2247	#endif
neilt6	11:67ddc53e3983	2248	#if _FS_LOCK /* Clear file lock semaphores */
neilt6	11:67ddc53e3983	2249	clear_lock(fs);
neilt6	11:67ddc53e3983	2250	#endif
neilt6	11:67ddc53e3983	2251
neilt6	11:67ddc53e3983	2252	return FR_OK;
neilt6	11:67ddc53e3983	2253	}
neilt6	11:67ddc53e3983	2254
neilt6	11:67ddc53e3983	2255
neilt6	11:67ddc53e3983	2256
neilt6	11:67ddc53e3983	2257
neilt6	11:67ddc53e3983	2258	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2259	/* Check if the file/dir object is valid or not */
neilt6	11:67ddc53e3983	2260	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2261
neilt6	11:67ddc53e3983	2262	static
neilt6	11:67ddc53e3983	2263	FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
neilt6	11:67ddc53e3983	2264	void* obj /* Pointer to the object FIL/DIR to check validity */
neilt6	11:67ddc53e3983	2265	)
neilt6	11:67ddc53e3983	2266	{
neilt6	11:67ddc53e3983	2267	FIL *fil;
neilt6	11:67ddc53e3983	2268
neilt6	11:67ddc53e3983	2269
neilt6	11:67ddc53e3983	2270	fil = (FIL)obj; / Assuming offset of fs and id in the FIL/DIR is identical */
neilt6	11:67ddc53e3983	2271	if (!fil->fs \|\| !fil->fs->fs_type \|\| fil->fs->id != fil->id)
neilt6	11:67ddc53e3983	2272	return FR_INVALID_OBJECT;
neilt6	11:67ddc53e3983	2273
neilt6	11:67ddc53e3983	2274	ENTER_FF(fil->fs); /* Lock file system */
neilt6	11:67ddc53e3983	2275
neilt6	11:67ddc53e3983	2276	if (disk_status(fil->fs->drv) & STA_NOINIT)
neilt6	11:67ddc53e3983	2277	return FR_NOT_READY;
neilt6	11:67ddc53e3983	2278
neilt6	11:67ddc53e3983	2279	return FR_OK;
neilt6	11:67ddc53e3983	2280	}
neilt6	11:67ddc53e3983	2281
neilt6	11:67ddc53e3983	2282
neilt6	11:67ddc53e3983	2283
neilt6	11:67ddc53e3983	2284
neilt6	11:67ddc53e3983	2285	/*--------------------------------------------------------------------------
neilt6	11:67ddc53e3983	2286
neilt6	11:67ddc53e3983	2287	Public Functions
neilt6	11:67ddc53e3983	2288
neilt6	11:67ddc53e3983	2289	--------------------------------------------------------------------------*/
neilt6	11:67ddc53e3983	2290
neilt6	11:67ddc53e3983	2291
neilt6	11:67ddc53e3983	2292
neilt6	11:67ddc53e3983	2293	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2294	/* Mount/Unmount a Logical Drive */
neilt6	11:67ddc53e3983	2295	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2296
neilt6	11:67ddc53e3983	2297	FRESULT f_mount (
neilt6	11:67ddc53e3983	2298	BYTE vol, /* Logical drive number to be mounted/unmounted */
neilt6	11:67ddc53e3983	2299	FATFS fs / Pointer to new file system object (NULL for unmount)*/
neilt6	11:67ddc53e3983	2300	)
neilt6	11:67ddc53e3983	2301	{
neilt6	11:67ddc53e3983	2302	FATFS *rfs;
neilt6	11:67ddc53e3983	2303
neilt6	11:67ddc53e3983	2304
neilt6	11:67ddc53e3983	2305	if (vol >= _VOLUMES) /* Check if the drive number is valid */
neilt6	11:67ddc53e3983	2306	return FR_INVALID_DRIVE;
neilt6	11:67ddc53e3983	2307	rfs = FatFs[vol]; /* Get current fs object */
neilt6	11:67ddc53e3983	2308
neilt6	11:67ddc53e3983	2309	if (rfs) {
neilt6	11:67ddc53e3983	2310	#if _FS_LOCK
neilt6	11:67ddc53e3983	2311	clear_lock(rfs);
neilt6	11:67ddc53e3983	2312	#endif
neilt6	11:67ddc53e3983	2313	#if _FS_REENTRANT /* Discard sync object of the current volume */
neilt6	11:67ddc53e3983	2314	if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
neilt6	11:67ddc53e3983	2315	#endif
neilt6	11:67ddc53e3983	2316	rfs->fs_type = 0; /* Clear old fs object */
neilt6	11:67ddc53e3983	2317	}
neilt6	11:67ddc53e3983	2318
neilt6	11:67ddc53e3983	2319	if (fs) {
neilt6	11:67ddc53e3983	2320	fs->fs_type = 0; /* Clear new fs object */
neilt6	11:67ddc53e3983	2321	#if _FS_REENTRANT /* Create sync object for the new volume */
neilt6	11:67ddc53e3983	2322	if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
neilt6	11:67ddc53e3983	2323	#endif
neilt6	11:67ddc53e3983	2324	}
neilt6	11:67ddc53e3983	2325	FatFs[vol] = fs; /* Register new fs object */
neilt6	11:67ddc53e3983	2326
neilt6	11:67ddc53e3983	2327	return FR_OK;
neilt6	11:67ddc53e3983	2328	}
neilt6	11:67ddc53e3983	2329
neilt6	11:67ddc53e3983	2330
neilt6	11:67ddc53e3983	2331
neilt6	11:67ddc53e3983	2332
neilt6	11:67ddc53e3983	2333	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2334	/* Open or Create a File */
neilt6	11:67ddc53e3983	2335	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2336
neilt6	11:67ddc53e3983	2337	FRESULT f_open (
neilt6	11:67ddc53e3983	2338	FIL fp, / Pointer to the blank file object */
neilt6	11:67ddc53e3983	2339	const TCHAR path, / Pointer to the file name */
neilt6	11:67ddc53e3983	2340	BYTE mode /* Access mode and file open mode flags */
neilt6	11:67ddc53e3983	2341	)
neilt6	11:67ddc53e3983	2342	{
neilt6	11:67ddc53e3983	2343	FRESULT res;
neilt6	11:67ddc53e3983	2344	FATFS_DIR dj;
neilt6	11:67ddc53e3983	2345	BYTE *dir;
neilt6	11:67ddc53e3983	2346	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	2347
neilt6	11:67ddc53e3983	2348
neilt6	11:67ddc53e3983	2349	if (!fp) return FR_INVALID_OBJECT;
neilt6	11:67ddc53e3983	2350	fp->fs = 0; /* Clear file object */
neilt6	11:67ddc53e3983	2351
neilt6	11:67ddc53e3983	2352	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2353	mode &= FA_READ \| FA_WRITE \| FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW;
neilt6	11:67ddc53e3983	2354	res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
neilt6	11:67ddc53e3983	2355	#else
neilt6	11:67ddc53e3983	2356	mode &= FA_READ;
neilt6	11:67ddc53e3983	2357	res = chk_mounted(&path, &dj.fs, 0);
neilt6	11:67ddc53e3983	2358	#endif
neilt6	11:67ddc53e3983	2359	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2360	INIT_BUF(dj);
neilt6	11:67ddc53e3983	2361	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	2362	dir = dj.dir;
neilt6	11:67ddc53e3983	2363	#if !_FS_READONLY /* R/W configuration */
neilt6	11:67ddc53e3983	2364	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2365	if (!dir) /* Current dir itself */
neilt6	11:67ddc53e3983	2366	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	2367	#if _FS_LOCK
neilt6	11:67ddc53e3983	2368	else
neilt6	11:67ddc53e3983	2369	res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
neilt6	11:67ddc53e3983	2370	#endif
neilt6	11:67ddc53e3983	2371	}
neilt6	11:67ddc53e3983	2372	/* Create or Open a file */
neilt6	11:67ddc53e3983	2373	if (mode & (FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW)) {
neilt6	11:67ddc53e3983	2374	DWORD dw, cl;
neilt6	11:67ddc53e3983	2375
neilt6	11:67ddc53e3983	2376	if (res != FR_OK) { /* No file, create new */
neilt6	11:67ddc53e3983	2377	if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
neilt6	11:67ddc53e3983	2378	#if _FS_LOCK
neilt6	11:67ddc53e3983	2379	res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
neilt6	11:67ddc53e3983	2380	#else
neilt6	11:67ddc53e3983	2381	res = dir_register(&dj);
neilt6	11:67ddc53e3983	2382	#endif
neilt6	11:67ddc53e3983	2383	mode \|= FA_CREATE_ALWAYS; /* File is created */
neilt6	11:67ddc53e3983	2384	dir = dj.dir; /* New entry */
neilt6	11:67ddc53e3983	2385	} else { /* Any object is already existing */
neilt6	11:67ddc53e3983	2386	if (dir[DIR_Attr] & (AM_RDO \| AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
neilt6	11:67ddc53e3983	2387	res = FR_DENIED;
neilt6	11:67ddc53e3983	2388	} else {
neilt6	11:67ddc53e3983	2389	if (mode & FA_CREATE_NEW) /* Cannot create as new file */
neilt6	11:67ddc53e3983	2390	res = FR_EXIST;
neilt6	11:67ddc53e3983	2391	}
neilt6	11:67ddc53e3983	2392	}
neilt6	11:67ddc53e3983	2393	if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
neilt6	11:67ddc53e3983	2394	dw = get_fattime(); /* Created time */
neilt6	11:67ddc53e3983	2395	ST_DWORD(dir+DIR_CrtTime, dw);
neilt6	11:67ddc53e3983	2396	dir[DIR_Attr] = 0; /* Reset attribute */
neilt6	11:67ddc53e3983	2397	ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
neilt6	11:67ddc53e3983	2398	cl = ld_clust(dj.fs, dir); /* Get start cluster */
neilt6	11:67ddc53e3983	2399	st_clust(dir, 0); /* cluster = 0 */
neilt6	11:67ddc53e3983	2400	dj.fs->wflag = 1;
neilt6	11:67ddc53e3983	2401	if (cl) { /* Remove the cluster chain if exist */
neilt6	11:67ddc53e3983	2402	dw = dj.fs->winsect;
neilt6	11:67ddc53e3983	2403	res = remove_chain(dj.fs, cl);
neilt6	11:67ddc53e3983	2404	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2405	dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
neilt6	11:67ddc53e3983	2406	res = move_window(dj.fs, dw);
neilt6	11:67ddc53e3983	2407	}
neilt6	11:67ddc53e3983	2408	}
neilt6	11:67ddc53e3983	2409	}
neilt6	11:67ddc53e3983	2410	} else { /* Open an existing file */
neilt6	11:67ddc53e3983	2411	if (res == FR_OK) { /* Follow succeeded */
neilt6	11:67ddc53e3983	2412	if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
neilt6	11:67ddc53e3983	2413	res = FR_NO_FILE;
neilt6	11:67ddc53e3983	2414	} else {
neilt6	11:67ddc53e3983	2415	if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
neilt6	11:67ddc53e3983	2416	res = FR_DENIED;
neilt6	11:67ddc53e3983	2417	}
neilt6	11:67ddc53e3983	2418	}
neilt6	11:67ddc53e3983	2419	}
neilt6	11:67ddc53e3983	2420	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2421	if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
neilt6	11:67ddc53e3983	2422	mode \|= FA__WRITTEN;
neilt6	11:67ddc53e3983	2423	fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
neilt6	11:67ddc53e3983	2424	fp->dir_ptr = dir;
neilt6	11:67ddc53e3983	2425	#if _FS_LOCK
neilt6	11:67ddc53e3983	2426	fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
neilt6	11:67ddc53e3983	2427	if (!fp->lockid) res = FR_INT_ERR;
neilt6	11:67ddc53e3983	2428	#endif
neilt6	11:67ddc53e3983	2429	}
neilt6	11:67ddc53e3983	2430
neilt6	11:67ddc53e3983	2431	#else /* R/O configuration */
neilt6	11:67ddc53e3983	2432	if (res == FR_OK) { /* Follow succeeded */
neilt6	11:67ddc53e3983	2433	dir = dj.dir;
neilt6	11:67ddc53e3983	2434	if (!dir) { /* Current dir itself */
neilt6	11:67ddc53e3983	2435	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	2436	} else {
neilt6	11:67ddc53e3983	2437	if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
neilt6	11:67ddc53e3983	2438	res = FR_NO_FILE;
neilt6	11:67ddc53e3983	2439	}
neilt6	11:67ddc53e3983	2440	}
neilt6	11:67ddc53e3983	2441	#endif
neilt6	11:67ddc53e3983	2442	FREE_BUF();
neilt6	11:67ddc53e3983	2443
neilt6	11:67ddc53e3983	2444	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2445	fp->flag = mode; /* File access mode */
neilt6	11:67ddc53e3983	2446	fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
neilt6	11:67ddc53e3983	2447	fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
neilt6	11:67ddc53e3983	2448	fp->fptr = 0; /* File pointer */
neilt6	11:67ddc53e3983	2449	fp->dsect = 0;
neilt6	11:67ddc53e3983	2450	#if _USE_FASTSEEK
neilt6	11:67ddc53e3983	2451	fp->cltbl = 0; /* Normal seek mode */
neilt6	11:67ddc53e3983	2452	#endif
neilt6	11:67ddc53e3983	2453	fp->fs = dj.fs;
neilt6	11:67ddc53e3983	2454	fp->id = dj.fs->id; /* Validate file object */
neilt6	11:67ddc53e3983	2455	}
neilt6	11:67ddc53e3983	2456	}
neilt6	11:67ddc53e3983	2457
neilt6	11:67ddc53e3983	2458	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	2459	}
neilt6	11:67ddc53e3983	2460
neilt6	11:67ddc53e3983	2461
neilt6	11:67ddc53e3983	2462
neilt6	11:67ddc53e3983	2463
neilt6	11:67ddc53e3983	2464	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2465	/* Read File */
neilt6	11:67ddc53e3983	2466	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2467
neilt6	11:67ddc53e3983	2468	FRESULT f_read (
neilt6	11:67ddc53e3983	2469	FIL fp, / Pointer to the file object */
neilt6	11:67ddc53e3983	2470	void buff, / Pointer to data buffer */
neilt6	11:67ddc53e3983	2471	UINT btr, /* Number of bytes to read */
neilt6	11:67ddc53e3983	2472	UINT br / Pointer to number of bytes read */
neilt6	11:67ddc53e3983	2473	)
neilt6	11:67ddc53e3983	2474	{
neilt6	11:67ddc53e3983	2475	FRESULT res;
neilt6	11:67ddc53e3983	2476	DWORD clst, sect, remain;
neilt6	11:67ddc53e3983	2477	UINT rcnt, cc;
neilt6	11:67ddc53e3983	2478	BYTE csect, rbuff = (BYTE )buff;
neilt6	11:67ddc53e3983	2479
neilt6	11:67ddc53e3983	2480
neilt6	11:67ddc53e3983	2481	br = 0; / Clear read byte counter */
neilt6	11:67ddc53e3983	2482
neilt6	11:67ddc53e3983	2483	res = validate(fp); /* Check validity */
neilt6	11:67ddc53e3983	2484	if (res != FR_OK) LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	2485	if (fp->flag & FA__ERROR) /* Aborted file? */
neilt6	11:67ddc53e3983	2486	LEAVE_FF(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2487	if (!(fp->flag & FA_READ)) /* Check access mode */
neilt6	11:67ddc53e3983	2488	LEAVE_FF(fp->fs, FR_DENIED);
neilt6	11:67ddc53e3983	2489	remain = fp->fsize - fp->fptr;
neilt6	11:67ddc53e3983	2490	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
neilt6	11:67ddc53e3983	2491
neilt6	11:67ddc53e3983	2492	for ( ; btr; /* Repeat until all data read */
neilt6	11:67ddc53e3983	2493	rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
neilt6	11:67ddc53e3983	2494	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
neilt6	11:67ddc53e3983	2495	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
neilt6	11:67ddc53e3983	2496	if (!csect) { /* On the cluster boundary? */
neilt6	11:67ddc53e3983	2497	if (fp->fptr == 0) { /* On the top of the file? */
neilt6	11:67ddc53e3983	2498	clst = fp->sclust; /* Follow from the origin */
neilt6	11:67ddc53e3983	2499	} else { /* Middle or end of the file */
neilt6	11:67ddc53e3983	2500	#if _USE_FASTSEEK
neilt6	11:67ddc53e3983	2501	if (fp->cltbl)
neilt6	11:67ddc53e3983	2502	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
neilt6	11:67ddc53e3983	2503	else
neilt6	11:67ddc53e3983	2504	#endif
neilt6	11:67ddc53e3983	2505	clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
neilt6	11:67ddc53e3983	2506	}
neilt6	11:67ddc53e3983	2507	if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2508	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2509	fp->clust = clst; /* Update current cluster */
neilt6	11:67ddc53e3983	2510	}
neilt6	11:67ddc53e3983	2511	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
neilt6	11:67ddc53e3983	2512	if (!sect) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2513	sect += csect;
neilt6	11:67ddc53e3983	2514	cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
neilt6	11:67ddc53e3983	2515	if (cc) { /* Read maximum contiguous sectors directly */
neilt6	11:67ddc53e3983	2516	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
neilt6	11:67ddc53e3983	2517	cc = fp->fs->csize - csect;
neilt6	11:67ddc53e3983	2518	if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
neilt6	11:67ddc53e3983	2519	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2520	#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
neilt6	11:67ddc53e3983	2521	#if _FS_TINY
neilt6	11:67ddc53e3983	2522	if (fp->fs->wflag && fp->fs->winsect - sect < cc)
neilt6	11:67ddc53e3983	2523	mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
neilt6	11:67ddc53e3983	2524	#else
neilt6	11:67ddc53e3983	2525	if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
neilt6	11:67ddc53e3983	2526	mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
neilt6	11:67ddc53e3983	2527	#endif
neilt6	11:67ddc53e3983	2528	#endif
neilt6	11:67ddc53e3983	2529	rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
neilt6	11:67ddc53e3983	2530	continue;
neilt6	11:67ddc53e3983	2531	}
neilt6	11:67ddc53e3983	2532	#if !_FS_TINY
neilt6	11:67ddc53e3983	2533	if (fp->dsect != sect) { /* Load data sector if not in cache */
neilt6	11:67ddc53e3983	2534	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2535	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
neilt6	11:67ddc53e3983	2536	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	2537	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2538	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	2539	}
neilt6	11:67ddc53e3983	2540	#endif
neilt6	11:67ddc53e3983	2541	if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
neilt6	11:67ddc53e3983	2542	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2543	}
neilt6	11:67ddc53e3983	2544	#endif
neilt6	11:67ddc53e3983	2545	fp->dsect = sect;
neilt6	11:67ddc53e3983	2546	}
neilt6	11:67ddc53e3983	2547	rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
neilt6	11:67ddc53e3983	2548	if (rcnt > btr) rcnt = btr;
neilt6	11:67ddc53e3983	2549	#if _FS_TINY
neilt6	11:67ddc53e3983	2550	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
neilt6	11:67ddc53e3983	2551	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2552	mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
neilt6	11:67ddc53e3983	2553	#else
neilt6	11:67ddc53e3983	2554	mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
neilt6	11:67ddc53e3983	2555	#endif
neilt6	11:67ddc53e3983	2556	}
neilt6	11:67ddc53e3983	2557
neilt6	11:67ddc53e3983	2558	LEAVE_FF(fp->fs, FR_OK);
neilt6	11:67ddc53e3983	2559	}
neilt6	11:67ddc53e3983	2560
neilt6	11:67ddc53e3983	2561
neilt6	11:67ddc53e3983	2562
neilt6	11:67ddc53e3983	2563
neilt6	11:67ddc53e3983	2564	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2565	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2566	/* Write File */
neilt6	11:67ddc53e3983	2567	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2568
neilt6	11:67ddc53e3983	2569	FRESULT f_write (
neilt6	11:67ddc53e3983	2570	FIL fp, / Pointer to the file object */
neilt6	11:67ddc53e3983	2571	const void buff, / Pointer to the data to be written */
neilt6	11:67ddc53e3983	2572	UINT btw, /* Number of bytes to write */
neilt6	11:67ddc53e3983	2573	UINT bw / Pointer to number of bytes written */
neilt6	11:67ddc53e3983	2574	)
neilt6	11:67ddc53e3983	2575	{
neilt6	11:67ddc53e3983	2576	FRESULT res;
neilt6	11:67ddc53e3983	2577	DWORD clst, sect;
neilt6	11:67ddc53e3983	2578	UINT wcnt, cc;
neilt6	11:67ddc53e3983	2579	const BYTE wbuff = (const BYTE )buff;
neilt6	11:67ddc53e3983	2580	BYTE csect;
neilt6	11:67ddc53e3983	2581
neilt6	11:67ddc53e3983	2582
neilt6	11:67ddc53e3983	2583	bw = 0; / Clear write byte counter */
neilt6	11:67ddc53e3983	2584
neilt6	11:67ddc53e3983	2585	res = validate(fp); /* Check validity */
neilt6	11:67ddc53e3983	2586	if (res != FR_OK) LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	2587	if (fp->flag & FA__ERROR) /* Aborted file? */
neilt6	11:67ddc53e3983	2588	LEAVE_FF(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2589	if (!(fp->flag & FA_WRITE)) /* Check access mode */
neilt6	11:67ddc53e3983	2590	LEAVE_FF(fp->fs, FR_DENIED);
neilt6	11:67ddc53e3983	2591	if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
neilt6	11:67ddc53e3983	2592
neilt6	11:67ddc53e3983	2593	for ( ; btw; /* Repeat until all data written */
neilt6	11:67ddc53e3983	2594	wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
neilt6	11:67ddc53e3983	2595	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
neilt6	11:67ddc53e3983	2596	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
neilt6	11:67ddc53e3983	2597	if (!csect) { /* On the cluster boundary? */
neilt6	11:67ddc53e3983	2598	if (fp->fptr == 0) { /* On the top of the file? */
neilt6	11:67ddc53e3983	2599	clst = fp->sclust; /* Follow from the origin */
neilt6	11:67ddc53e3983	2600	if (clst == 0) /* When no cluster is allocated, */
neilt6	11:67ddc53e3983	2601	fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
neilt6	11:67ddc53e3983	2602	} else { /* Middle or end of the file */
neilt6	11:67ddc53e3983	2603	#if _USE_FASTSEEK
neilt6	11:67ddc53e3983	2604	if (fp->cltbl)
neilt6	11:67ddc53e3983	2605	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
neilt6	11:67ddc53e3983	2606	else
neilt6	11:67ddc53e3983	2607	#endif
neilt6	11:67ddc53e3983	2608	clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
neilt6	11:67ddc53e3983	2609	}
neilt6	11:67ddc53e3983	2610	if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
neilt6	11:67ddc53e3983	2611	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2612	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2613	fp->clust = clst; /* Update current cluster */
neilt6	11:67ddc53e3983	2614	}
neilt6	11:67ddc53e3983	2615	#if _FS_TINY
neilt6	11:67ddc53e3983	2616	if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
neilt6	11:67ddc53e3983	2617	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2618	#else
neilt6	11:67ddc53e3983	2619	if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
neilt6	11:67ddc53e3983	2620	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	2621	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2622	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	2623	}
neilt6	11:67ddc53e3983	2624	#endif
neilt6	11:67ddc53e3983	2625	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
neilt6	11:67ddc53e3983	2626	if (!sect) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2627	sect += csect;
neilt6	11:67ddc53e3983	2628	cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
neilt6	11:67ddc53e3983	2629	if (cc) { /* Write maximum contiguous sectors directly */
neilt6	11:67ddc53e3983	2630	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
neilt6	11:67ddc53e3983	2631	cc = fp->fs->csize - csect;
neilt6	11:67ddc53e3983	2632	if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
neilt6	11:67ddc53e3983	2633	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2634	#if _FS_TINY
neilt6	11:67ddc53e3983	2635	if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
neilt6	11:67ddc53e3983	2636	mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
neilt6	11:67ddc53e3983	2637	fp->fs->wflag = 0;
neilt6	11:67ddc53e3983	2638	}
neilt6	11:67ddc53e3983	2639	#else
neilt6	11:67ddc53e3983	2640	if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
neilt6	11:67ddc53e3983	2641	mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
neilt6	11:67ddc53e3983	2642	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	2643	}
neilt6	11:67ddc53e3983	2644	#endif
neilt6	11:67ddc53e3983	2645	wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
neilt6	11:67ddc53e3983	2646	continue;
neilt6	11:67ddc53e3983	2647	}
neilt6	11:67ddc53e3983	2648	#if _FS_TINY
neilt6	11:67ddc53e3983	2649	if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
neilt6	11:67ddc53e3983	2650	if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2651	fp->fs->winsect = sect;
neilt6	11:67ddc53e3983	2652	}
neilt6	11:67ddc53e3983	2653	#else
neilt6	11:67ddc53e3983	2654	if (fp->dsect != sect) { /* Fill sector cache with file data */
neilt6	11:67ddc53e3983	2655	if (fp->fptr < fp->fsize &&
neilt6	11:67ddc53e3983	2656	disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
neilt6	11:67ddc53e3983	2657	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2658	}
neilt6	11:67ddc53e3983	2659	#endif
neilt6	11:67ddc53e3983	2660	fp->dsect = sect;
neilt6	11:67ddc53e3983	2661	}
neilt6	11:67ddc53e3983	2662	wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
neilt6	11:67ddc53e3983	2663	if (wcnt > btw) wcnt = btw;
neilt6	11:67ddc53e3983	2664	#if _FS_TINY
neilt6	11:67ddc53e3983	2665	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
neilt6	11:67ddc53e3983	2666	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2667	mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
neilt6	11:67ddc53e3983	2668	fp->fs->wflag = 1;
neilt6	11:67ddc53e3983	2669	#else
neilt6	11:67ddc53e3983	2670	mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
neilt6	11:67ddc53e3983	2671	fp->flag \|= FA__DIRTY;
neilt6	11:67ddc53e3983	2672	#endif
neilt6	11:67ddc53e3983	2673	}
neilt6	11:67ddc53e3983	2674
neilt6	11:67ddc53e3983	2675	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
neilt6	11:67ddc53e3983	2676	fp->flag \|= FA__WRITTEN; /* Set file change flag */
neilt6	11:67ddc53e3983	2677
neilt6	11:67ddc53e3983	2678	LEAVE_FF(fp->fs, FR_OK);
neilt6	11:67ddc53e3983	2679	}
neilt6	11:67ddc53e3983	2680
neilt6	11:67ddc53e3983	2681
neilt6	11:67ddc53e3983	2682
neilt6	11:67ddc53e3983	2683
neilt6	11:67ddc53e3983	2684	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2685	/* Synchronize the File Object */
neilt6	11:67ddc53e3983	2686	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2687
neilt6	11:67ddc53e3983	2688	FRESULT f_sync (
neilt6	11:67ddc53e3983	2689	FIL fp / Pointer to the file object */
neilt6	11:67ddc53e3983	2690	)
neilt6	11:67ddc53e3983	2691	{
neilt6	11:67ddc53e3983	2692	FRESULT res;
neilt6	11:67ddc53e3983	2693	DWORD tim;
neilt6	11:67ddc53e3983	2694	BYTE *dir;
neilt6	11:67ddc53e3983	2695
neilt6	11:67ddc53e3983	2696
neilt6	11:67ddc53e3983	2697	res = validate(fp); /* Check validity of the object */
neilt6	11:67ddc53e3983	2698	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2699	if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
neilt6	11:67ddc53e3983	2700	#if !_FS_TINY /* Write-back dirty buffer */
neilt6	11:67ddc53e3983	2701	if (fp->flag & FA__DIRTY) {
neilt6	11:67ddc53e3983	2702	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	2703	LEAVE_FF(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2704	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	2705	}
neilt6	11:67ddc53e3983	2706	#endif
neilt6	11:67ddc53e3983	2707	/* Update the directory entry */
neilt6	11:67ddc53e3983	2708	res = move_window(fp->fs, fp->dir_sect);
neilt6	11:67ddc53e3983	2709	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2710	dir = fp->dir_ptr;
neilt6	11:67ddc53e3983	2711	dir[DIR_Attr] \|= AM_ARC; /* Set archive bit */
neilt6	11:67ddc53e3983	2712	ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
neilt6	11:67ddc53e3983	2713	st_clust(dir, fp->sclust); /* Update start cluster */
neilt6	11:67ddc53e3983	2714	tim = get_fattime(); /* Update updated time */
neilt6	11:67ddc53e3983	2715	ST_DWORD(dir+DIR_WrtTime, tim);
neilt6	11:67ddc53e3983	2716	ST_WORD(dir+DIR_LstAccDate, 0);
neilt6	11:67ddc53e3983	2717	fp->flag &= ~FA__WRITTEN;
neilt6	11:67ddc53e3983	2718	fp->fs->wflag = 1;
neilt6	11:67ddc53e3983	2719	res = sync(fp->fs);
neilt6	11:67ddc53e3983	2720	}
neilt6	11:67ddc53e3983	2721	}
neilt6	11:67ddc53e3983	2722	}
neilt6	11:67ddc53e3983	2723
neilt6	11:67ddc53e3983	2724	LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	2725	}
neilt6	11:67ddc53e3983	2726
neilt6	11:67ddc53e3983	2727	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	2728
neilt6	11:67ddc53e3983	2729
neilt6	11:67ddc53e3983	2730
neilt6	11:67ddc53e3983	2731
neilt6	11:67ddc53e3983	2732	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2733	/* Close File */
neilt6	11:67ddc53e3983	2734	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2735
neilt6	11:67ddc53e3983	2736	FRESULT f_close (
neilt6	11:67ddc53e3983	2737	FIL fp / Pointer to the file object to be closed */
neilt6	11:67ddc53e3983	2738	)
neilt6	11:67ddc53e3983	2739	{
neilt6	11:67ddc53e3983	2740	FRESULT res;
neilt6	11:67ddc53e3983	2741
neilt6	11:67ddc53e3983	2742
neilt6	11:67ddc53e3983	2743	#if _FS_READONLY
neilt6	11:67ddc53e3983	2744	res = validate(fp);
neilt6	11:67ddc53e3983	2745	{
neilt6	11:67ddc53e3983	2746	#if _FS_REENTRANT
neilt6	11:67ddc53e3983	2747	FATFS *fs = fp->fs;
neilt6	11:67ddc53e3983	2748	#endif
neilt6	11:67ddc53e3983	2749	if (res == FR_OK) fp->fs = 0; /* Discard file object */
neilt6	11:67ddc53e3983	2750	LEAVE_FF(fs, res);
neilt6	11:67ddc53e3983	2751	}
neilt6	11:67ddc53e3983	2752	#else
neilt6	11:67ddc53e3983	2753	res = f_sync(fp); /* Flush cached data */
neilt6	11:67ddc53e3983	2754	#if _FS_LOCK
neilt6	11:67ddc53e3983	2755	if (res == FR_OK) { /* Decrement open counter */
neilt6	11:67ddc53e3983	2756	#if _FS_REENTRANT
neilt6	11:67ddc53e3983	2757	FATFS *fs = fp->fs;;
neilt6	11:67ddc53e3983	2758	res = validate(fp);
neilt6	11:67ddc53e3983	2759	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2760	res = dec_lock(fp->lockid);
neilt6	11:67ddc53e3983	2761	unlock_fs(fs, FR_OK);
neilt6	11:67ddc53e3983	2762	}
neilt6	11:67ddc53e3983	2763	#else
neilt6	11:67ddc53e3983	2764	res = dec_lock(fp->lockid);
neilt6	11:67ddc53e3983	2765	#endif
neilt6	11:67ddc53e3983	2766	}
neilt6	11:67ddc53e3983	2767	#endif
neilt6	11:67ddc53e3983	2768	if (res == FR_OK) fp->fs = 0; /* Discard file object */
neilt6	11:67ddc53e3983	2769	return res;
neilt6	11:67ddc53e3983	2770	#endif
neilt6	11:67ddc53e3983	2771	}
neilt6	11:67ddc53e3983	2772
neilt6	11:67ddc53e3983	2773
neilt6	11:67ddc53e3983	2774
neilt6	11:67ddc53e3983	2775
neilt6	11:67ddc53e3983	2776	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2777	/* Current Drive/Directory Handlings */
neilt6	11:67ddc53e3983	2778	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2779
neilt6	11:67ddc53e3983	2780	#if _FS_RPATH >= 1
neilt6	11:67ddc53e3983	2781
neilt6	11:67ddc53e3983	2782	FRESULT f_chdrive (
neilt6	11:67ddc53e3983	2783	BYTE drv /* Drive number */
neilt6	11:67ddc53e3983	2784	)
neilt6	11:67ddc53e3983	2785	{
neilt6	11:67ddc53e3983	2786	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
neilt6	11:67ddc53e3983	2787
neilt6	11:67ddc53e3983	2788	CurrVol = drv;
neilt6	11:67ddc53e3983	2789
neilt6	11:67ddc53e3983	2790	return FR_OK;
neilt6	11:67ddc53e3983	2791	}
neilt6	11:67ddc53e3983	2792
neilt6	11:67ddc53e3983	2793
neilt6	11:67ddc53e3983	2794
neilt6	11:67ddc53e3983	2795	FRESULT f_chdir (
neilt6	11:67ddc53e3983	2796	const TCHAR path / Pointer to the directory path */
neilt6	11:67ddc53e3983	2797	)
neilt6	11:67ddc53e3983	2798	{
neilt6	11:67ddc53e3983	2799	FRESULT res;
neilt6	11:67ddc53e3983	2800	DIR dj;
neilt6	11:67ddc53e3983	2801	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	2802
neilt6	11:67ddc53e3983	2803
neilt6	11:67ddc53e3983	2804	res = chk_mounted(&path, &dj.fs, 0);
neilt6	11:67ddc53e3983	2805	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2806	INIT_BUF(dj);
neilt6	11:67ddc53e3983	2807	res = follow_path(&dj, path); /* Follow the path */
neilt6	11:67ddc53e3983	2808	FREE_BUF();
neilt6	11:67ddc53e3983	2809	if (res == FR_OK) { /* Follow completed */
neilt6	11:67ddc53e3983	2810	if (!dj.dir) {
neilt6	11:67ddc53e3983	2811	dj.fs->cdir = dj.sclust; /* Start directory itself */
neilt6	11:67ddc53e3983	2812	} else {
neilt6	11:67ddc53e3983	2813	if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
neilt6	11:67ddc53e3983	2814	dj.fs->cdir = ld_clust(dj.fs, dj.dir);
neilt6	11:67ddc53e3983	2815	else
neilt6	11:67ddc53e3983	2816	res = FR_NO_PATH; /* Reached but a file */
neilt6	11:67ddc53e3983	2817	}
neilt6	11:67ddc53e3983	2818	}
neilt6	11:67ddc53e3983	2819	if (res == FR_NO_FILE) res = FR_NO_PATH;
neilt6	11:67ddc53e3983	2820	}
neilt6	11:67ddc53e3983	2821
neilt6	11:67ddc53e3983	2822	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	2823	}
neilt6	11:67ddc53e3983	2824
neilt6	11:67ddc53e3983	2825
neilt6	11:67ddc53e3983	2826	#if _FS_RPATH >= 2
neilt6	11:67ddc53e3983	2827	FRESULT f_getcwd (
neilt6	11:67ddc53e3983	2828	TCHAR path, / Pointer to the directory path */
neilt6	11:67ddc53e3983	2829	UINT sz_path /* Size of path */
neilt6	11:67ddc53e3983	2830	)
neilt6	11:67ddc53e3983	2831	{
neilt6	11:67ddc53e3983	2832	FRESULT res;
neilt6	11:67ddc53e3983	2833	DIR dj;
neilt6	11:67ddc53e3983	2834	UINT i, n;
neilt6	11:67ddc53e3983	2835	DWORD ccl;
neilt6	11:67ddc53e3983	2836	TCHAR *tp;
neilt6	11:67ddc53e3983	2837	FILINFO fno;
neilt6	11:67ddc53e3983	2838	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	2839
neilt6	11:67ddc53e3983	2840
neilt6	11:67ddc53e3983	2841	*path = 0;
neilt6	11:67ddc53e3983	2842	res = chk_mounted((const TCHAR*)&path, &dj.fs, 0); / Get current volume */
neilt6	11:67ddc53e3983	2843	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2844	INIT_BUF(dj);
neilt6	11:67ddc53e3983	2845	i = sz_path; /* Bottom of buffer (dir stack base) */
neilt6	11:67ddc53e3983	2846	dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
neilt6	11:67ddc53e3983	2847	while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
neilt6	11:67ddc53e3983	2848	res = dir_sdi(&dj, 1); /* Get parent dir */
neilt6	11:67ddc53e3983	2849	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2850	res = dir_read(&dj);
neilt6	11:67ddc53e3983	2851	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2852	dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent dir */
neilt6	11:67ddc53e3983	2853	res = dir_sdi(&dj, 0);
neilt6	11:67ddc53e3983	2854	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2855	do { /* Find the entry links to the child dir */
neilt6	11:67ddc53e3983	2856	res = dir_read(&dj);
neilt6	11:67ddc53e3983	2857	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2858	if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
neilt6	11:67ddc53e3983	2859	res = dir_next(&dj, 0);
neilt6	11:67ddc53e3983	2860	} while (res == FR_OK);
neilt6	11:67ddc53e3983	2861	if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
neilt6	11:67ddc53e3983	2862	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	2863	#if _USE_LFN
neilt6	11:67ddc53e3983	2864	fno.lfname = path;
neilt6	11:67ddc53e3983	2865	fno.lfsize = i;
neilt6	11:67ddc53e3983	2866	#endif
neilt6	11:67ddc53e3983	2867	get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
neilt6	11:67ddc53e3983	2868	tp = fno.fname;
neilt6	11:67ddc53e3983	2869	if (_USE_LFN && *path) tp = path;
neilt6	11:67ddc53e3983	2870	for (n = 0; tp[n]; n++) ;
neilt6	11:67ddc53e3983	2871	if (i < n + 3) {
neilt6	11:67ddc53e3983	2872	res = FR_NOT_ENOUGH_CORE;
neilt6	11:67ddc53e3983	2873	break;
neilt6	11:67ddc53e3983	2874	}
neilt6	11:67ddc53e3983	2875	while (n) path[--i] = tp[--n];
neilt6	11:67ddc53e3983	2876	path[--i] = '/';
neilt6	11:67ddc53e3983	2877	}
neilt6	11:67ddc53e3983	2878	tp = path;
neilt6	11:67ddc53e3983	2879	if (res == FR_OK) {
neilt6	11:67ddc53e3983	2880	tp++ = '0' + CurrVol; / Put drive number */
neilt6	11:67ddc53e3983	2881	*tp++ = ':';
neilt6	11:67ddc53e3983	2882	if (i == sz_path) { /* Root-dir */
neilt6	11:67ddc53e3983	2883	*tp++ = '/';
neilt6	11:67ddc53e3983	2884	} else { /* Sub-dir */
neilt6	11:67ddc53e3983	2885	do /* Add stacked path str */
neilt6	11:67ddc53e3983	2886	*tp++ = path[i++];
neilt6	11:67ddc53e3983	2887	while (i < sz_path);
neilt6	11:67ddc53e3983	2888	}
neilt6	11:67ddc53e3983	2889	}
neilt6	11:67ddc53e3983	2890	*tp = 0;
neilt6	11:67ddc53e3983	2891	FREE_BUF();
neilt6	11:67ddc53e3983	2892	}
neilt6	11:67ddc53e3983	2893
neilt6	11:67ddc53e3983	2894	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	2895	}
neilt6	11:67ddc53e3983	2896	#endif /* _FS_RPATH >= 2 */
neilt6	11:67ddc53e3983	2897	#endif /* _FS_RPATH >= 1 */
neilt6	11:67ddc53e3983	2898
neilt6	11:67ddc53e3983	2899
neilt6	11:67ddc53e3983	2900
neilt6	11:67ddc53e3983	2901	#if _FS_MINIMIZE <= 2
neilt6	11:67ddc53e3983	2902	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2903	/* Seek File R/W Pointer */
neilt6	11:67ddc53e3983	2904	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	2905
neilt6	11:67ddc53e3983	2906	FRESULT f_lseek (
neilt6	11:67ddc53e3983	2907	FIL fp, / Pointer to the file object */
neilt6	11:67ddc53e3983	2908	DWORD ofs /* File pointer from top of file */
neilt6	11:67ddc53e3983	2909	)
neilt6	11:67ddc53e3983	2910	{
neilt6	11:67ddc53e3983	2911	FRESULT res;
neilt6	11:67ddc53e3983	2912
neilt6	11:67ddc53e3983	2913
neilt6	11:67ddc53e3983	2914	res = validate(fp); /* Check validity of the object */
neilt6	11:67ddc53e3983	2915	if (res != FR_OK) LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	2916	if (fp->flag & FA__ERROR) /* Check abort flag */
neilt6	11:67ddc53e3983	2917	LEAVE_FF(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2918
neilt6	11:67ddc53e3983	2919	#if _USE_FASTSEEK
neilt6	11:67ddc53e3983	2920	if (fp->cltbl) { /* Fast seek */
neilt6	11:67ddc53e3983	2921	DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
neilt6	11:67ddc53e3983	2922
neilt6	11:67ddc53e3983	2923	if (ofs == CREATE_LINKMAP) { /* Create CLMT */
neilt6	11:67ddc53e3983	2924	tbl = fp->cltbl;
neilt6	11:67ddc53e3983	2925	tlen = *tbl++;
neilt6	11:67ddc53e3983	2926	ulen = 2; /* Given table size and required table size */
neilt6	11:67ddc53e3983	2927	cl = fp->sclust; /* Top of the chain */
neilt6	11:67ddc53e3983	2928	if (cl) {
neilt6	11:67ddc53e3983	2929	do {
neilt6	11:67ddc53e3983	2930	/* Get a fragment */
neilt6	11:67ddc53e3983	2931	tcl = cl;
neilt6	11:67ddc53e3983	2932	ncl = 0;
neilt6	11:67ddc53e3983	2933	ulen += 2; /* Top, length and used items */
neilt6	11:67ddc53e3983	2934	do {
neilt6	11:67ddc53e3983	2935	pcl = cl;
neilt6	11:67ddc53e3983	2936	ncl++;
neilt6	11:67ddc53e3983	2937	cl = get_fat(fp->fs, cl);
neilt6	11:67ddc53e3983	2938	if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2939	if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2940	} while (cl == pcl + 1);
neilt6	11:67ddc53e3983	2941	if (ulen <= tlen) { /* Store the length and top of the fragment */
neilt6	11:67ddc53e3983	2942	*tbl++ = ncl;
neilt6	11:67ddc53e3983	2943	*tbl++ = tcl;
neilt6	11:67ddc53e3983	2944	}
neilt6	11:67ddc53e3983	2945	} while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
neilt6	11:67ddc53e3983	2946	}
neilt6	11:67ddc53e3983	2947	fp->cltbl = ulen; / Number of items used */
neilt6	11:67ddc53e3983	2948	if (ulen <= tlen)
neilt6	11:67ddc53e3983	2949	tbl = 0; / Terminate table */
neilt6	11:67ddc53e3983	2950	else
neilt6	11:67ddc53e3983	2951	res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
neilt6	11:67ddc53e3983	2952
neilt6	11:67ddc53e3983	2953	} else { /* Fast seek */
neilt6	11:67ddc53e3983	2954	if (ofs > fp->fsize) /* Clip offset at the file size */
neilt6	11:67ddc53e3983	2955	ofs = fp->fsize;
neilt6	11:67ddc53e3983	2956	fp->fptr = ofs; /* Set file pointer */
neilt6	11:67ddc53e3983	2957	if (ofs) {
neilt6	11:67ddc53e3983	2958	fp->clust = clmt_clust(fp, ofs - 1);
neilt6	11:67ddc53e3983	2959	dsc = clust2sect(fp->fs, fp->clust);
neilt6	11:67ddc53e3983	2960	if (!dsc) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	2961	dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
neilt6	11:67ddc53e3983	2962	if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
neilt6	11:67ddc53e3983	2963	#if !_FS_TINY
neilt6	11:67ddc53e3983	2964	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2965	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
neilt6	11:67ddc53e3983	2966	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	2967	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2968	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	2969	}
neilt6	11:67ddc53e3983	2970	#endif
neilt6	11:67ddc53e3983	2971	if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
neilt6	11:67ddc53e3983	2972	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	2973	#endif
neilt6	11:67ddc53e3983	2974	fp->dsect = dsc;
neilt6	11:67ddc53e3983	2975	}
neilt6	11:67ddc53e3983	2976	}
neilt6	11:67ddc53e3983	2977	}
neilt6	11:67ddc53e3983	2978	} else
neilt6	11:67ddc53e3983	2979	#endif
neilt6	11:67ddc53e3983	2980
neilt6	11:67ddc53e3983	2981	/* Normal Seek */
neilt6	11:67ddc53e3983	2982	{
neilt6	11:67ddc53e3983	2983	DWORD clst, bcs, nsect, ifptr;
neilt6	11:67ddc53e3983	2984
neilt6	11:67ddc53e3983	2985	if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
neilt6	11:67ddc53e3983	2986	#if !_FS_READONLY
neilt6	11:67ddc53e3983	2987	&& !(fp->flag & FA_WRITE)
neilt6	11:67ddc53e3983	2988	#endif
neilt6	11:67ddc53e3983	2989	) ofs = fp->fsize;
neilt6	11:67ddc53e3983	2990
neilt6	11:67ddc53e3983	2991	ifptr = fp->fptr;
neilt6	11:67ddc53e3983	2992	fp->fptr = nsect = 0;
neilt6	11:67ddc53e3983	2993	if (ofs) {
neilt6	11:67ddc53e3983	2994	bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
neilt6	11:67ddc53e3983	2995	if (ifptr > 0 &&
neilt6	11:67ddc53e3983	2996	(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
neilt6	11:67ddc53e3983	2997	fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
neilt6	11:67ddc53e3983	2998	ofs -= fp->fptr;
neilt6	11:67ddc53e3983	2999	clst = fp->clust;
neilt6	11:67ddc53e3983	3000	} else { /* When seek to back cluster, */
neilt6	11:67ddc53e3983	3001	clst = fp->sclust; /* start from the first cluster */
neilt6	11:67ddc53e3983	3002	#if !_FS_READONLY
neilt6	11:67ddc53e3983	3003	if (clst == 0) { /* If no cluster chain, create a new chain */
neilt6	11:67ddc53e3983	3004	clst = create_chain(fp->fs, 0);
neilt6	11:67ddc53e3983	3005	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3006	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3007	fp->sclust = clst;
neilt6	11:67ddc53e3983	3008	}
neilt6	11:67ddc53e3983	3009	#endif
neilt6	11:67ddc53e3983	3010	fp->clust = clst;
neilt6	11:67ddc53e3983	3011	}
neilt6	11:67ddc53e3983	3012	if (clst != 0) {
neilt6	11:67ddc53e3983	3013	while (ofs > bcs) { /* Cluster following loop */
neilt6	11:67ddc53e3983	3014	#if !_FS_READONLY
neilt6	11:67ddc53e3983	3015	if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
neilt6	11:67ddc53e3983	3016	clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
neilt6	11:67ddc53e3983	3017	if (clst == 0) { /* When disk gets full, clip file size */
neilt6	11:67ddc53e3983	3018	ofs = bcs;
neilt6	11:67ddc53e3983	3019	break;
neilt6	11:67ddc53e3983	3020	}
neilt6	11:67ddc53e3983	3021	} else
neilt6	11:67ddc53e3983	3022	#endif
neilt6	11:67ddc53e3983	3023	clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
neilt6	11:67ddc53e3983	3024	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3025	if (clst <= 1 \|\| clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3026	fp->clust = clst;
neilt6	11:67ddc53e3983	3027	fp->fptr += bcs;
neilt6	11:67ddc53e3983	3028	ofs -= bcs;
neilt6	11:67ddc53e3983	3029	}
neilt6	11:67ddc53e3983	3030	fp->fptr += ofs;
neilt6	11:67ddc53e3983	3031	if (ofs % SS(fp->fs)) {
neilt6	11:67ddc53e3983	3032	nsect = clust2sect(fp->fs, clst); /* Current sector */
neilt6	11:67ddc53e3983	3033	if (!nsect) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3034	nsect += ofs / SS(fp->fs);
neilt6	11:67ddc53e3983	3035	}
neilt6	11:67ddc53e3983	3036	}
neilt6	11:67ddc53e3983	3037	}
neilt6	11:67ddc53e3983	3038	if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
neilt6	11:67ddc53e3983	3039	#if !_FS_TINY
neilt6	11:67ddc53e3983	3040	#if !_FS_READONLY
neilt6	11:67ddc53e3983	3041	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
neilt6	11:67ddc53e3983	3042	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
neilt6	11:67ddc53e3983	3043	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3044	fp->flag &= ~FA__DIRTY;
neilt6	11:67ddc53e3983	3045	}
neilt6	11:67ddc53e3983	3046	#endif
neilt6	11:67ddc53e3983	3047	if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
neilt6	11:67ddc53e3983	3048	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3049	#endif
neilt6	11:67ddc53e3983	3050	fp->dsect = nsect;
neilt6	11:67ddc53e3983	3051	}
neilt6	11:67ddc53e3983	3052	#if !_FS_READONLY
neilt6	11:67ddc53e3983	3053	if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
neilt6	11:67ddc53e3983	3054	fp->fsize = fp->fptr;
neilt6	11:67ddc53e3983	3055	fp->flag \|= FA__WRITTEN;
neilt6	11:67ddc53e3983	3056	}
neilt6	11:67ddc53e3983	3057	#endif
neilt6	11:67ddc53e3983	3058	}
neilt6	11:67ddc53e3983	3059
neilt6	11:67ddc53e3983	3060	LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	3061	}
neilt6	11:67ddc53e3983	3062
neilt6	11:67ddc53e3983	3063
neilt6	11:67ddc53e3983	3064
neilt6	11:67ddc53e3983	3065	#if _FS_MINIMIZE <= 1
neilt6	11:67ddc53e3983	3066	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3067	/* Create a Directory Object */
neilt6	11:67ddc53e3983	3068	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3069
neilt6	11:67ddc53e3983	3070	FRESULT f_opendir (
neilt6	11:67ddc53e3983	3071	FATFS_DIR dj, / Pointer to directory object to create */
neilt6	11:67ddc53e3983	3072	const TCHAR path / Pointer to the directory path */
neilt6	11:67ddc53e3983	3073	)
neilt6	11:67ddc53e3983	3074	{
neilt6	11:67ddc53e3983	3075	FRESULT res;
neilt6	11:67ddc53e3983	3076	FATFS *fs;
neilt6	11:67ddc53e3983	3077	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3078
neilt6	11:67ddc53e3983	3079
neilt6	11:67ddc53e3983	3080	if (!dj) return FR_INVALID_OBJECT;
neilt6	11:67ddc53e3983	3081
neilt6	11:67ddc53e3983	3082	res = chk_mounted(&path, &dj->fs, 0);
neilt6	11:67ddc53e3983	3083	fs = dj->fs;
neilt6	11:67ddc53e3983	3084	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3085	INIT_BUF(*dj);
neilt6	11:67ddc53e3983	3086	res = follow_path(dj, path); /* Follow the path to the directory */
neilt6	11:67ddc53e3983	3087	FREE_BUF();
neilt6	11:67ddc53e3983	3088	if (res == FR_OK) { /* Follow completed */
neilt6	11:67ddc53e3983	3089	if (dj->dir) { /* It is not the root dir */
neilt6	11:67ddc53e3983	3090	if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
neilt6	11:67ddc53e3983	3091	dj->sclust = ld_clust(fs, dj->dir);
neilt6	11:67ddc53e3983	3092	} else { /* The object is not a directory */
neilt6	11:67ddc53e3983	3093	res = FR_NO_PATH;
neilt6	11:67ddc53e3983	3094	}
neilt6	11:67ddc53e3983	3095	}
neilt6	11:67ddc53e3983	3096	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3097	dj->id = fs->id;
neilt6	11:67ddc53e3983	3098	res = dir_sdi(dj, 0); /* Rewind dir */
neilt6	11:67ddc53e3983	3099	}
neilt6	11:67ddc53e3983	3100	}
neilt6	11:67ddc53e3983	3101	if (res == FR_NO_FILE) res = FR_NO_PATH;
neilt6	11:67ddc53e3983	3102	if (res != FR_OK) dj->fs = 0; /* Invalidate the dir object if function faild */
neilt6	11:67ddc53e3983	3103	} else {
neilt6	11:67ddc53e3983	3104	dj->fs = 0;
neilt6	11:67ddc53e3983	3105	}
neilt6	11:67ddc53e3983	3106
neilt6	11:67ddc53e3983	3107	LEAVE_FF(fs, res);
neilt6	11:67ddc53e3983	3108	}
neilt6	11:67ddc53e3983	3109
neilt6	11:67ddc53e3983	3110
neilt6	11:67ddc53e3983	3111
neilt6	11:67ddc53e3983	3112
neilt6	11:67ddc53e3983	3113	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3114	/* Read Directory Entry in Sequence */
neilt6	11:67ddc53e3983	3115	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3116
neilt6	11:67ddc53e3983	3117	FRESULT f_readdir (
neilt6	11:67ddc53e3983	3118	FATFS_DIR dj, / Pointer to the open directory object */
neilt6	11:67ddc53e3983	3119	FILINFO fno / Pointer to file information to return */
neilt6	11:67ddc53e3983	3120	)
neilt6	11:67ddc53e3983	3121	{
neilt6	11:67ddc53e3983	3122	FRESULT res;
neilt6	11:67ddc53e3983	3123	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3124
neilt6	11:67ddc53e3983	3125
neilt6	11:67ddc53e3983	3126	res = validate(dj); /* Check validity of the object */
neilt6	11:67ddc53e3983	3127	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3128	if (!fno) {
neilt6	11:67ddc53e3983	3129	res = dir_sdi(dj, 0); /* Rewind the directory object */
neilt6	11:67ddc53e3983	3130	} else {
neilt6	11:67ddc53e3983	3131	INIT_BUF(*dj);
neilt6	11:67ddc53e3983	3132	res = dir_read(dj); /* Read an directory item */
neilt6	11:67ddc53e3983	3133	if (res == FR_NO_FILE) { /* Reached end of dir */
neilt6	11:67ddc53e3983	3134	dj->sect = 0;
neilt6	11:67ddc53e3983	3135	res = FR_OK;
neilt6	11:67ddc53e3983	3136	}
neilt6	11:67ddc53e3983	3137	if (res == FR_OK) { /* A valid entry is found */
neilt6	11:67ddc53e3983	3138	get_fileinfo(dj, fno); /* Get the object information */
neilt6	11:67ddc53e3983	3139	res = dir_next(dj, 0); /* Increment index for next */
neilt6	11:67ddc53e3983	3140	if (res == FR_NO_FILE) {
neilt6	11:67ddc53e3983	3141	dj->sect = 0;
neilt6	11:67ddc53e3983	3142	res = FR_OK;
neilt6	11:67ddc53e3983	3143	}
neilt6	11:67ddc53e3983	3144	}
neilt6	11:67ddc53e3983	3145	FREE_BUF();
neilt6	11:67ddc53e3983	3146	}
neilt6	11:67ddc53e3983	3147	}
neilt6	11:67ddc53e3983	3148
neilt6	11:67ddc53e3983	3149	LEAVE_FF(dj->fs, res);
neilt6	11:67ddc53e3983	3150	}
neilt6	11:67ddc53e3983	3151
neilt6	11:67ddc53e3983	3152
neilt6	11:67ddc53e3983	3153
neilt6	11:67ddc53e3983	3154	#if _FS_MINIMIZE == 0
neilt6	11:67ddc53e3983	3155	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3156	/* Get File Status */
neilt6	11:67ddc53e3983	3157	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3158
neilt6	11:67ddc53e3983	3159	FRESULT f_stat (
neilt6	11:67ddc53e3983	3160	const TCHAR path, / Pointer to the file path */
neilt6	11:67ddc53e3983	3161	FILINFO fno / Pointer to file information to return */
neilt6	11:67ddc53e3983	3162	)
neilt6	11:67ddc53e3983	3163	{
neilt6	11:67ddc53e3983	3164	FRESULT res;
neilt6	11:67ddc53e3983	3165	FATFS_DIR dj;
neilt6	11:67ddc53e3983	3166	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3167
neilt6	11:67ddc53e3983	3168
neilt6	11:67ddc53e3983	3169	res = chk_mounted(&path, &dj.fs, 0);
neilt6	11:67ddc53e3983	3170	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3171	INIT_BUF(dj);
neilt6	11:67ddc53e3983	3172	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	3173	if (res == FR_OK) { /* Follow completed */
neilt6	11:67ddc53e3983	3174	if (dj.dir) /* Found an object */
neilt6	11:67ddc53e3983	3175	get_fileinfo(&dj, fno);
neilt6	11:67ddc53e3983	3176	else /* It is root dir */
neilt6	11:67ddc53e3983	3177	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3178	}
neilt6	11:67ddc53e3983	3179	FREE_BUF();
neilt6	11:67ddc53e3983	3180	}
neilt6	11:67ddc53e3983	3181
neilt6	11:67ddc53e3983	3182	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	3183	}
neilt6	11:67ddc53e3983	3184
neilt6	11:67ddc53e3983	3185
neilt6	11:67ddc53e3983	3186
neilt6	11:67ddc53e3983	3187	#if !_FS_READONLY
neilt6	11:67ddc53e3983	3188	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3189	/* Get Number of Free Clusters */
neilt6	11:67ddc53e3983	3190	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3191
neilt6	11:67ddc53e3983	3192	FRESULT f_getfree (
neilt6	11:67ddc53e3983	3193	const TCHAR path, / Pointer to the logical drive number (root dir) */
neilt6	11:67ddc53e3983	3194	DWORD nclst, / Pointer to the variable to return number of free clusters */
neilt6	11:67ddc53e3983	3195	FATFS *fatfs / Pointer to pointer to corresponding file system object to return */
neilt6	11:67ddc53e3983	3196	)
neilt6	11:67ddc53e3983	3197	{
neilt6	11:67ddc53e3983	3198	FRESULT res;
neilt6	11:67ddc53e3983	3199	FATFS *fs;
neilt6	11:67ddc53e3983	3200	DWORD n, clst, sect, stat;
neilt6	11:67ddc53e3983	3201	UINT i;
neilt6	11:67ddc53e3983	3202	BYTE fat, *p;
neilt6	11:67ddc53e3983	3203
neilt6	11:67ddc53e3983	3204
neilt6	11:67ddc53e3983	3205	/* Get drive number */
neilt6	11:67ddc53e3983	3206	res = chk_mounted(&path, fatfs, 0);
neilt6	11:67ddc53e3983	3207	fs = *fatfs;
neilt6	11:67ddc53e3983	3208	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3209	/* If free_clust is valid, return it without full cluster scan */
neilt6	11:67ddc53e3983	3210	if (fs->free_clust <= fs->n_fatent - 2) {
neilt6	11:67ddc53e3983	3211	*nclst = fs->free_clust;
neilt6	11:67ddc53e3983	3212	} else {
neilt6	11:67ddc53e3983	3213	/* Get number of free clusters */
neilt6	11:67ddc53e3983	3214	fat = fs->fs_type;
neilt6	11:67ddc53e3983	3215	n = 0;
neilt6	11:67ddc53e3983	3216	if (fat == FS_FAT12) {
neilt6	11:67ddc53e3983	3217	clst = 2;
neilt6	11:67ddc53e3983	3218	do {
neilt6	11:67ddc53e3983	3219	stat = get_fat(fs, clst);
neilt6	11:67ddc53e3983	3220	if (stat == 0xFFFFFFFF) {
neilt6	11:67ddc53e3983	3221	res = FR_DISK_ERR;
neilt6	11:67ddc53e3983	3222	break;
neilt6	11:67ddc53e3983	3223	}
neilt6	11:67ddc53e3983	3224	if (stat == 1) {
neilt6	11:67ddc53e3983	3225	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3226	break;
neilt6	11:67ddc53e3983	3227	}
neilt6	11:67ddc53e3983	3228	if (stat == 0) n++;
neilt6	11:67ddc53e3983	3229	} while (++clst < fs->n_fatent);
neilt6	11:67ddc53e3983	3230	} else {
neilt6	11:67ddc53e3983	3231	clst = fs->n_fatent;
neilt6	11:67ddc53e3983	3232	sect = fs->fatbase;
neilt6	11:67ddc53e3983	3233	i = 0;
neilt6	11:67ddc53e3983	3234	p = 0;
neilt6	11:67ddc53e3983	3235	do {
neilt6	11:67ddc53e3983	3236	if (!i) {
neilt6	11:67ddc53e3983	3237	res = move_window(fs, sect++);
neilt6	11:67ddc53e3983	3238	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	3239	p = fs->win;
neilt6	11:67ddc53e3983	3240	i = SS(fs);
neilt6	11:67ddc53e3983	3241	}
neilt6	11:67ddc53e3983	3242	if (fat == FS_FAT16) {
neilt6	11:67ddc53e3983	3243	if (LD_WORD(p) == 0) n++;
neilt6	11:67ddc53e3983	3244	p += 2;
neilt6	11:67ddc53e3983	3245	i -= 2;
neilt6	11:67ddc53e3983	3246	} else {
neilt6	11:67ddc53e3983	3247	if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
neilt6	11:67ddc53e3983	3248	p += 4;
neilt6	11:67ddc53e3983	3249	i -= 4;
neilt6	11:67ddc53e3983	3250	}
neilt6	11:67ddc53e3983	3251	} while (--clst);
neilt6	11:67ddc53e3983	3252	}
neilt6	11:67ddc53e3983	3253	fs->free_clust = n;
neilt6	11:67ddc53e3983	3254	if (fat == FS_FAT32) fs->fsi_flag = 1;
neilt6	11:67ddc53e3983	3255	*nclst = n;
neilt6	11:67ddc53e3983	3256	}
neilt6	11:67ddc53e3983	3257	}
neilt6	11:67ddc53e3983	3258	LEAVE_FF(fs, res);
neilt6	11:67ddc53e3983	3259	}
neilt6	11:67ddc53e3983	3260
neilt6	11:67ddc53e3983	3261
neilt6	11:67ddc53e3983	3262
neilt6	11:67ddc53e3983	3263
neilt6	11:67ddc53e3983	3264	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3265	/* Truncate File */
neilt6	11:67ddc53e3983	3266	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3267
neilt6	11:67ddc53e3983	3268	FRESULT f_truncate (
neilt6	11:67ddc53e3983	3269	FIL fp / Pointer to the file object */
neilt6	11:67ddc53e3983	3270	)
neilt6	11:67ddc53e3983	3271	{
neilt6	11:67ddc53e3983	3272	FRESULT res;
neilt6	11:67ddc53e3983	3273	DWORD ncl;
neilt6	11:67ddc53e3983	3274
neilt6	11:67ddc53e3983	3275
neilt6	11:67ddc53e3983	3276	if (!fp) return FR_INVALID_OBJECT;
neilt6	11:67ddc53e3983	3277
neilt6	11:67ddc53e3983	3278	res = validate(fp); /* Check validity of the object */
neilt6	11:67ddc53e3983	3279	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3280	if (fp->flag & FA__ERROR) { /* Check abort flag */
neilt6	11:67ddc53e3983	3281	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3282	} else {
neilt6	11:67ddc53e3983	3283	if (!(fp->flag & FA_WRITE)) /* Check access mode */
neilt6	11:67ddc53e3983	3284	res = FR_DENIED;
neilt6	11:67ddc53e3983	3285	}
neilt6	11:67ddc53e3983	3286	}
neilt6	11:67ddc53e3983	3287	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3288	if (fp->fsize > fp->fptr) {
neilt6	11:67ddc53e3983	3289	fp->fsize = fp->fptr; /* Set file size to current R/W point */
neilt6	11:67ddc53e3983	3290	fp->flag \|= FA__WRITTEN;
neilt6	11:67ddc53e3983	3291	if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
neilt6	11:67ddc53e3983	3292	res = remove_chain(fp->fs, fp->sclust);
neilt6	11:67ddc53e3983	3293	fp->sclust = 0;
neilt6	11:67ddc53e3983	3294	} else { /* When truncate a part of the file, remove remaining clusters */
neilt6	11:67ddc53e3983	3295	ncl = get_fat(fp->fs, fp->clust);
neilt6	11:67ddc53e3983	3296	res = FR_OK;
neilt6	11:67ddc53e3983	3297	if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
neilt6	11:67ddc53e3983	3298	if (ncl == 1) res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3299	if (res == FR_OK && ncl < fp->fs->n_fatent) {
neilt6	11:67ddc53e3983	3300	res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
neilt6	11:67ddc53e3983	3301	if (res == FR_OK) res = remove_chain(fp->fs, ncl);
neilt6	11:67ddc53e3983	3302	}
neilt6	11:67ddc53e3983	3303	}
neilt6	11:67ddc53e3983	3304	}
neilt6	11:67ddc53e3983	3305	if (res != FR_OK) fp->flag \|= FA__ERROR;
neilt6	11:67ddc53e3983	3306	}
neilt6	11:67ddc53e3983	3307
neilt6	11:67ddc53e3983	3308	LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	3309	}
neilt6	11:67ddc53e3983	3310
neilt6	11:67ddc53e3983	3311
neilt6	11:67ddc53e3983	3312
neilt6	11:67ddc53e3983	3313
neilt6	11:67ddc53e3983	3314	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3315	/* Delete a File or Directory */
neilt6	11:67ddc53e3983	3316	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3317
neilt6	11:67ddc53e3983	3318	FRESULT f_unlink (
neilt6	11:67ddc53e3983	3319	const TCHAR path / Pointer to the file or directory path */
neilt6	11:67ddc53e3983	3320	)
neilt6	11:67ddc53e3983	3321	{
neilt6	11:67ddc53e3983	3322	FRESULT res;
neilt6	11:67ddc53e3983	3323	FATFS_DIR dj, sdj;
neilt6	11:67ddc53e3983	3324	BYTE *dir;
neilt6	11:67ddc53e3983	3325	DWORD dclst;
neilt6	11:67ddc53e3983	3326	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3327
neilt6	11:67ddc53e3983	3328
neilt6	11:67ddc53e3983	3329	res = chk_mounted(&path, &dj.fs, 1);
neilt6	11:67ddc53e3983	3330	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3331	INIT_BUF(dj);
neilt6	11:67ddc53e3983	3332	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	3333	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
neilt6	11:67ddc53e3983	3334	res = FR_INVALID_NAME; /* Cannot remove dot entry */
neilt6	11:67ddc53e3983	3335	#if _FS_LOCK
neilt6	11:67ddc53e3983	3336	if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
neilt6	11:67ddc53e3983	3337	#endif
neilt6	11:67ddc53e3983	3338	if (res == FR_OK) { /* The object is accessible */
neilt6	11:67ddc53e3983	3339	dir = dj.dir;
neilt6	11:67ddc53e3983	3340	if (!dir) {
neilt6	11:67ddc53e3983	3341	res = FR_INVALID_NAME; /* Cannot remove the start directory */
neilt6	11:67ddc53e3983	3342	} else {
neilt6	11:67ddc53e3983	3343	if (dir[DIR_Attr] & AM_RDO)
neilt6	11:67ddc53e3983	3344	res = FR_DENIED; /* Cannot remove R/O object */
neilt6	11:67ddc53e3983	3345	}
neilt6	11:67ddc53e3983	3346	dclst = ld_clust(dj.fs, dir);
neilt6	11:67ddc53e3983	3347	if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
neilt6	11:67ddc53e3983	3348	if (dclst < 2) {
neilt6	11:67ddc53e3983	3349	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3350	} else {
neilt6	11:67ddc53e3983	3351	mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Check if the sub-dir is empty or not */
neilt6	11:67ddc53e3983	3352	sdj.sclust = dclst;
neilt6	11:67ddc53e3983	3353	res = dir_sdi(&sdj, 2); /* Exclude dot entries */
neilt6	11:67ddc53e3983	3354	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3355	res = dir_read(&sdj);
neilt6	11:67ddc53e3983	3356	if (res == FR_OK /* Not empty dir */
neilt6	11:67ddc53e3983	3357	#if _FS_RPATH
neilt6	11:67ddc53e3983	3358	\|\| dclst == dj.fs->cdir /* Current dir */
neilt6	11:67ddc53e3983	3359	#endif
neilt6	11:67ddc53e3983	3360	) res = FR_DENIED;
neilt6	11:67ddc53e3983	3361	if (res == FR_NO_FILE) res = FR_OK; /* Empty */
neilt6	11:67ddc53e3983	3362	}
neilt6	11:67ddc53e3983	3363	}
neilt6	11:67ddc53e3983	3364	}
neilt6	11:67ddc53e3983	3365	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3366	res = dir_remove(&dj); /* Remove the directory entry */
neilt6	11:67ddc53e3983	3367	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3368	if (dclst) /* Remove the cluster chain if exist */
neilt6	11:67ddc53e3983	3369	res = remove_chain(dj.fs, dclst);
neilt6	11:67ddc53e3983	3370	if (res == FR_OK) res = sync(dj.fs);
neilt6	11:67ddc53e3983	3371	}
neilt6	11:67ddc53e3983	3372	}
neilt6	11:67ddc53e3983	3373	}
neilt6	11:67ddc53e3983	3374	FREE_BUF();
neilt6	11:67ddc53e3983	3375	}
neilt6	11:67ddc53e3983	3376	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	3377	}
neilt6	11:67ddc53e3983	3378
neilt6	11:67ddc53e3983	3379
neilt6	11:67ddc53e3983	3380
neilt6	11:67ddc53e3983	3381
neilt6	11:67ddc53e3983	3382	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3383	/* Create a Directory */
neilt6	11:67ddc53e3983	3384	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3385
neilt6	11:67ddc53e3983	3386	FRESULT f_mkdir (
neilt6	11:67ddc53e3983	3387	const TCHAR path / Pointer to the directory path */
neilt6	11:67ddc53e3983	3388	)
neilt6	11:67ddc53e3983	3389	{
neilt6	11:67ddc53e3983	3390	FRESULT res;
neilt6	11:67ddc53e3983	3391	FATFS_DIR dj;
neilt6	11:67ddc53e3983	3392	BYTE *dir, n;
neilt6	11:67ddc53e3983	3393	DWORD dsc, dcl, pcl, tim = get_fattime();
neilt6	11:67ddc53e3983	3394	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3395
neilt6	11:67ddc53e3983	3396
neilt6	11:67ddc53e3983	3397	res = chk_mounted(&path, &dj.fs, 1);
neilt6	11:67ddc53e3983	3398	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3399	INIT_BUF(dj);
neilt6	11:67ddc53e3983	3400	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	3401	if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
neilt6	11:67ddc53e3983	3402	if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
neilt6	11:67ddc53e3983	3403	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3404	if (res == FR_NO_FILE) { /* Can create a new directory */
neilt6	11:67ddc53e3983	3405	dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
neilt6	11:67ddc53e3983	3406	res = FR_OK;
neilt6	11:67ddc53e3983	3407	if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
neilt6	11:67ddc53e3983	3408	if (dcl == 1) res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3409	if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
neilt6	11:67ddc53e3983	3410	if (res == FR_OK) /* Flush FAT */
neilt6	11:67ddc53e3983	3411	res = move_window(dj.fs, 0);
neilt6	11:67ddc53e3983	3412	if (res == FR_OK) { /* Initialize the new directory table */
neilt6	11:67ddc53e3983	3413	dsc = clust2sect(dj.fs, dcl);
neilt6	11:67ddc53e3983	3414	dir = dj.fs->win;
neilt6	11:67ddc53e3983	3415	mem_set(dir, 0, SS(dj.fs));
neilt6	11:67ddc53e3983	3416	mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
neilt6	11:67ddc53e3983	3417	dir[DIR_Name] = '.';
neilt6	11:67ddc53e3983	3418	dir[DIR_Attr] = AM_DIR;
neilt6	11:67ddc53e3983	3419	ST_DWORD(dir+DIR_WrtTime, tim);
neilt6	11:67ddc53e3983	3420	st_clust(dir, dcl);
neilt6	11:67ddc53e3983	3421	mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
neilt6	11:67ddc53e3983	3422	dir[33] = '.';
neilt6	11:67ddc53e3983	3423	pcl = dj.sclust;
neilt6	11:67ddc53e3983	3424	if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
neilt6	11:67ddc53e3983	3425	pcl = 0;
neilt6	11:67ddc53e3983	3426	st_clust(dir+SZ_DIR, pcl);
neilt6	11:67ddc53e3983	3427	for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
neilt6	11:67ddc53e3983	3428	dj.fs->winsect = dsc++;
neilt6	11:67ddc53e3983	3429	dj.fs->wflag = 1;
neilt6	11:67ddc53e3983	3430	res = move_window(dj.fs, 0);
neilt6	11:67ddc53e3983	3431	if (res != FR_OK) break;
neilt6	11:67ddc53e3983	3432	mem_set(dir, 0, SS(dj.fs));
neilt6	11:67ddc53e3983	3433	}
neilt6	11:67ddc53e3983	3434	}
neilt6	11:67ddc53e3983	3435	if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
neilt6	11:67ddc53e3983	3436	if (res != FR_OK) {
neilt6	11:67ddc53e3983	3437	remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
neilt6	11:67ddc53e3983	3438	} else {
neilt6	11:67ddc53e3983	3439	dir = dj.dir;
neilt6	11:67ddc53e3983	3440	dir[DIR_Attr] = AM_DIR; /* Attribute */
neilt6	11:67ddc53e3983	3441	ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
neilt6	11:67ddc53e3983	3442	st_clust(dir, dcl); /* Table start cluster */
neilt6	11:67ddc53e3983	3443	dj.fs->wflag = 1;
neilt6	11:67ddc53e3983	3444	res = sync(dj.fs);
neilt6	11:67ddc53e3983	3445	}
neilt6	11:67ddc53e3983	3446	}
neilt6	11:67ddc53e3983	3447	FREE_BUF();
neilt6	11:67ddc53e3983	3448	}
neilt6	11:67ddc53e3983	3449
neilt6	11:67ddc53e3983	3450	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	3451	}
neilt6	11:67ddc53e3983	3452
neilt6	11:67ddc53e3983	3453
neilt6	11:67ddc53e3983	3454
neilt6	11:67ddc53e3983	3455
neilt6	11:67ddc53e3983	3456	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3457	/* Change Attribute */
neilt6	11:67ddc53e3983	3458	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3459
neilt6	11:67ddc53e3983	3460	FRESULT f_chmod (
neilt6	11:67ddc53e3983	3461	const TCHAR path, / Pointer to the file path */
neilt6	11:67ddc53e3983	3462	BYTE value, /* Attribute bits */
neilt6	11:67ddc53e3983	3463	BYTE mask /* Attribute mask to change */
neilt6	11:67ddc53e3983	3464	)
neilt6	11:67ddc53e3983	3465	{
neilt6	11:67ddc53e3983	3466	FRESULT res;
neilt6	11:67ddc53e3983	3467	FATFS_DIR dj;
neilt6	11:67ddc53e3983	3468	BYTE *dir;
neilt6	11:67ddc53e3983	3469	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3470
neilt6	11:67ddc53e3983	3471
neilt6	11:67ddc53e3983	3472	res = chk_mounted(&path, &dj.fs, 1);
neilt6	11:67ddc53e3983	3473	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3474	INIT_BUF(dj);
neilt6	11:67ddc53e3983	3475	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	3476	FREE_BUF();
neilt6	11:67ddc53e3983	3477	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
neilt6	11:67ddc53e3983	3478	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3479	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3480	dir = dj.dir;
neilt6	11:67ddc53e3983	3481	if (!dir) { /* Is it a root directory? */
neilt6	11:67ddc53e3983	3482	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3483	} else { /* File or sub directory */
neilt6	11:67ddc53e3983	3484	mask &= AM_RDO\|AM_HID\|AM_SYS\|AM_ARC; /* Valid attribute mask */
neilt6	11:67ddc53e3983	3485	dir[DIR_Attr] = (value & mask) \| (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
neilt6	11:67ddc53e3983	3486	dj.fs->wflag = 1;
neilt6	11:67ddc53e3983	3487	res = sync(dj.fs);
neilt6	11:67ddc53e3983	3488	}
neilt6	11:67ddc53e3983	3489	}
neilt6	11:67ddc53e3983	3490	}
neilt6	11:67ddc53e3983	3491
neilt6	11:67ddc53e3983	3492	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	3493	}
neilt6	11:67ddc53e3983	3494
neilt6	11:67ddc53e3983	3495
neilt6	11:67ddc53e3983	3496
neilt6	11:67ddc53e3983	3497
neilt6	11:67ddc53e3983	3498	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3499	/* Change Timestamp */
neilt6	11:67ddc53e3983	3500	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3501
neilt6	11:67ddc53e3983	3502	FRESULT f_utime (
neilt6	11:67ddc53e3983	3503	const TCHAR path, / Pointer to the file/directory name */
neilt6	11:67ddc53e3983	3504	const FILINFO fno / Pointer to the time stamp to be set */
neilt6	11:67ddc53e3983	3505	)
neilt6	11:67ddc53e3983	3506	{
neilt6	11:67ddc53e3983	3507	FRESULT res;
neilt6	11:67ddc53e3983	3508	FATFS_DIR dj;
neilt6	11:67ddc53e3983	3509	BYTE *dir;
neilt6	11:67ddc53e3983	3510	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3511
neilt6	11:67ddc53e3983	3512
neilt6	11:67ddc53e3983	3513	res = chk_mounted(&path, &dj.fs, 1);
neilt6	11:67ddc53e3983	3514	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3515	INIT_BUF(dj);
neilt6	11:67ddc53e3983	3516	res = follow_path(&dj, path); /* Follow the file path */
neilt6	11:67ddc53e3983	3517	FREE_BUF();
neilt6	11:67ddc53e3983	3518	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
neilt6	11:67ddc53e3983	3519	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3520	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3521	dir = dj.dir;
neilt6	11:67ddc53e3983	3522	if (!dir) { /* Root directory */
neilt6	11:67ddc53e3983	3523	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3524	} else { /* File or sub-directory */
neilt6	11:67ddc53e3983	3525	ST_WORD(dir+DIR_WrtTime, fno->ftime);
neilt6	11:67ddc53e3983	3526	ST_WORD(dir+DIR_WrtDate, fno->fdate);
neilt6	11:67ddc53e3983	3527	dj.fs->wflag = 1;
neilt6	11:67ddc53e3983	3528	res = sync(dj.fs);
neilt6	11:67ddc53e3983	3529	}
neilt6	11:67ddc53e3983	3530	}
neilt6	11:67ddc53e3983	3531	}
neilt6	11:67ddc53e3983	3532
neilt6	11:67ddc53e3983	3533	LEAVE_FF(dj.fs, res);
neilt6	11:67ddc53e3983	3534	}
neilt6	11:67ddc53e3983	3535
neilt6	11:67ddc53e3983	3536
neilt6	11:67ddc53e3983	3537
neilt6	11:67ddc53e3983	3538
neilt6	11:67ddc53e3983	3539	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3540	/* Rename File/Directory */
neilt6	11:67ddc53e3983	3541	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3542
neilt6	11:67ddc53e3983	3543	FRESULT f_rename (
neilt6	11:67ddc53e3983	3544	const TCHAR path_old, / Pointer to the old name */
neilt6	11:67ddc53e3983	3545	const TCHAR path_new / Pointer to the new name */
neilt6	11:67ddc53e3983	3546	)
neilt6	11:67ddc53e3983	3547	{
neilt6	11:67ddc53e3983	3548	FRESULT res;
neilt6	11:67ddc53e3983	3549	FATFS_DIR djo, djn;
neilt6	11:67ddc53e3983	3550	BYTE buf[21], *dir;
neilt6	11:67ddc53e3983	3551	DWORD dw;
neilt6	11:67ddc53e3983	3552	DEF_NAMEBUF;
neilt6	11:67ddc53e3983	3553
neilt6	11:67ddc53e3983	3554
neilt6	11:67ddc53e3983	3555	res = chk_mounted(&path_old, &djo.fs, 1);
neilt6	11:67ddc53e3983	3556	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3557	djn.fs = djo.fs;
neilt6	11:67ddc53e3983	3558	INIT_BUF(djo);
neilt6	11:67ddc53e3983	3559	res = follow_path(&djo, path_old); /* Check old object */
neilt6	11:67ddc53e3983	3560	if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
neilt6	11:67ddc53e3983	3561	res = FR_INVALID_NAME;
neilt6	11:67ddc53e3983	3562	#if _FS_LOCK
neilt6	11:67ddc53e3983	3563	if (res == FR_OK) res = chk_lock(&djo, 2);
neilt6	11:67ddc53e3983	3564	#endif
neilt6	11:67ddc53e3983	3565	if (res == FR_OK) { /* Old object is found */
neilt6	11:67ddc53e3983	3566	if (!djo.dir) { /* Is root dir? */
neilt6	11:67ddc53e3983	3567	res = FR_NO_FILE;
neilt6	11:67ddc53e3983	3568	} else {
neilt6	11:67ddc53e3983	3569	mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
neilt6	11:67ddc53e3983	3570	mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Check new object */
neilt6	11:67ddc53e3983	3571	res = follow_path(&djn, path_new);
neilt6	11:67ddc53e3983	3572	if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
neilt6	11:67ddc53e3983	3573	if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
neilt6	11:67ddc53e3983	3574	/* Start critical section that an interruption or error can cause cross-link */
neilt6	11:67ddc53e3983	3575	res = dir_register(&djn); /* Register the new entry */
neilt6	11:67ddc53e3983	3576	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3577	dir = djn.dir; /* Copy object information except for name */
neilt6	11:67ddc53e3983	3578	mem_cpy(dir+13, buf+2, 19);
neilt6	11:67ddc53e3983	3579	dir[DIR_Attr] = buf[0] \| AM_ARC;
neilt6	11:67ddc53e3983	3580	djo.fs->wflag = 1;
neilt6	11:67ddc53e3983	3581	if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
neilt6	11:67ddc53e3983	3582	dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
neilt6	11:67ddc53e3983	3583	if (!dw) {
neilt6	11:67ddc53e3983	3584	res = FR_INT_ERR;
neilt6	11:67ddc53e3983	3585	} else {
neilt6	11:67ddc53e3983	3586	res = move_window(djo.fs, dw);
neilt6	11:67ddc53e3983	3587	dir = djo.fs->win+SZ_DIR; /* .. entry */
neilt6	11:67ddc53e3983	3588	if (res == FR_OK && dir[1] == '.') {
neilt6	11:67ddc53e3983	3589	dw = (djo.fs->fs_type == FS_FAT32 && djn.sclust == djo.fs->dirbase) ? 0 : djn.sclust;
neilt6	11:67ddc53e3983	3590	st_clust(dir, dw);
neilt6	11:67ddc53e3983	3591	djo.fs->wflag = 1;
neilt6	11:67ddc53e3983	3592	}
neilt6	11:67ddc53e3983	3593	}
neilt6	11:67ddc53e3983	3594	}
neilt6	11:67ddc53e3983	3595	if (res == FR_OK) {
neilt6	11:67ddc53e3983	3596	res = dir_remove(&djo); /* Remove old entry */
neilt6	11:67ddc53e3983	3597	if (res == FR_OK)
neilt6	11:67ddc53e3983	3598	res = sync(djo.fs);
neilt6	11:67ddc53e3983	3599	}
neilt6	11:67ddc53e3983	3600	}
neilt6	11:67ddc53e3983	3601	/* End critical section */
neilt6	11:67ddc53e3983	3602	}
neilt6	11:67ddc53e3983	3603	}
neilt6	11:67ddc53e3983	3604	}
neilt6	11:67ddc53e3983	3605	FREE_BUF();
neilt6	11:67ddc53e3983	3606	}
neilt6	11:67ddc53e3983	3607	LEAVE_FF(djo.fs, res);
neilt6	11:67ddc53e3983	3608	}
neilt6	11:67ddc53e3983	3609
neilt6	11:67ddc53e3983	3610	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	3611	#endif /* _FS_MINIMIZE == 0 */
neilt6	11:67ddc53e3983	3612	#endif /* _FS_MINIMIZE <= 1 */
neilt6	11:67ddc53e3983	3613	#endif /* _FS_MINIMIZE <= 2 */
neilt6	11:67ddc53e3983	3614
neilt6	11:67ddc53e3983	3615
neilt6	11:67ddc53e3983	3616
neilt6	11:67ddc53e3983	3617	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3618	/* Forward data to the stream directly (available on only tiny cfg) */
neilt6	11:67ddc53e3983	3619	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3620	#if _USE_FORWARD && _FS_TINY
neilt6	11:67ddc53e3983	3621
neilt6	11:67ddc53e3983	3622	FRESULT f_forward (
neilt6	11:67ddc53e3983	3623	FIL fp, / Pointer to the file object */
neilt6	11:67ddc53e3983	3624	UINT (func)(const BYTE,UINT), /* Pointer to the streaming function */
neilt6	11:67ddc53e3983	3625	UINT btr, /* Number of bytes to forward */
neilt6	11:67ddc53e3983	3626	UINT bf / Pointer to number of bytes forwarded */
neilt6	11:67ddc53e3983	3627	)
neilt6	11:67ddc53e3983	3628	{
neilt6	11:67ddc53e3983	3629	FRESULT res;
neilt6	11:67ddc53e3983	3630	DWORD remain, clst, sect;
neilt6	11:67ddc53e3983	3631	UINT rcnt;
neilt6	11:67ddc53e3983	3632	BYTE csect;
neilt6	11:67ddc53e3983	3633
neilt6	11:67ddc53e3983	3634
neilt6	11:67ddc53e3983	3635	bf = 0; / Clear transfer byte counter */
neilt6	11:67ddc53e3983	3636
neilt6	11:67ddc53e3983	3637	if (!fp) return FR_INVALID_OBJECT;
neilt6	11:67ddc53e3983	3638
neilt6	11:67ddc53e3983	3639	res = validate(fp); /* Check validity of the object */
neilt6	11:67ddc53e3983	3640	if (res != FR_OK) LEAVE_FF(fp->fs, res);
neilt6	11:67ddc53e3983	3641	if (fp->flag & FA__ERROR) /* Check error flag */
neilt6	11:67ddc53e3983	3642	LEAVE_FF(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3643	if (!(fp->flag & FA_READ)) /* Check access mode */
neilt6	11:67ddc53e3983	3644	LEAVE_FF(fp->fs, FR_DENIED);
neilt6	11:67ddc53e3983	3645
neilt6	11:67ddc53e3983	3646	remain = fp->fsize - fp->fptr;
neilt6	11:67ddc53e3983	3647	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
neilt6	11:67ddc53e3983	3648
neilt6	11:67ddc53e3983	3649	for ( ; btr && (func)(0, 0); / Repeat until all data transferred or stream becomes busy */
neilt6	11:67ddc53e3983	3650	fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
neilt6	11:67ddc53e3983	3651	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
neilt6	11:67ddc53e3983	3652	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
neilt6	11:67ddc53e3983	3653	if (!csect) { /* On the cluster boundary? */
neilt6	11:67ddc53e3983	3654	clst = (fp->fptr == 0) ? /* On the top of the file? */
neilt6	11:67ddc53e3983	3655	fp->sclust : get_fat(fp->fs, fp->clust);
neilt6	11:67ddc53e3983	3656	if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3657	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3658	fp->clust = clst; /* Update current cluster */
neilt6	11:67ddc53e3983	3659	}
neilt6	11:67ddc53e3983	3660	}
neilt6	11:67ddc53e3983	3661	sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
neilt6	11:67ddc53e3983	3662	if (!sect) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3663	sect += csect;
neilt6	11:67ddc53e3983	3664	if (move_window(fp->fs, sect)) /* Move sector window */
neilt6	11:67ddc53e3983	3665	ABORT(fp->fs, FR_DISK_ERR);
neilt6	11:67ddc53e3983	3666	fp->dsect = sect;
neilt6	11:67ddc53e3983	3667	rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
neilt6	11:67ddc53e3983	3668	if (rcnt > btr) rcnt = btr;
neilt6	11:67ddc53e3983	3669	rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
neilt6	11:67ddc53e3983	3670	if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
neilt6	11:67ddc53e3983	3671	}
neilt6	11:67ddc53e3983	3672
neilt6	11:67ddc53e3983	3673	LEAVE_FF(fp->fs, FR_OK);
neilt6	11:67ddc53e3983	3674	}
neilt6	11:67ddc53e3983	3675	#endif /* _USE_FORWARD */
neilt6	11:67ddc53e3983	3676
neilt6	11:67ddc53e3983	3677
neilt6	11:67ddc53e3983	3678
neilt6	11:67ddc53e3983	3679	#if _USE_MKFS && !_FS_READONLY
neilt6	11:67ddc53e3983	3680	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3681	/* Create File System on the Drive */
neilt6	11:67ddc53e3983	3682	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3683	#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
neilt6	11:67ddc53e3983	3684	#define N_FATS 1 /* Number of FAT copies (1 or 2) */
neilt6	11:67ddc53e3983	3685
neilt6	11:67ddc53e3983	3686
neilt6	11:67ddc53e3983	3687	FRESULT f_mkfs (
neilt6	11:67ddc53e3983	3688	BYTE drv, /* Logical drive number */
neilt6	11:67ddc53e3983	3689	BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
neilt6	11:67ddc53e3983	3690	UINT au /* Allocation unit size [bytes] */
neilt6	11:67ddc53e3983	3691	)
neilt6	11:67ddc53e3983	3692	{
neilt6	11:67ddc53e3983	3693	static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
neilt6	11:67ddc53e3983	3694	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
neilt6	11:67ddc53e3983	3695	BYTE fmt, md, sys, *tbl, pdrv, part;
neilt6	11:67ddc53e3983	3696	DWORD n_clst, vs, n, wsect;
neilt6	11:67ddc53e3983	3697	UINT i;
neilt6	11:67ddc53e3983	3698	DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
neilt6	11:67ddc53e3983	3699	DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
neilt6	11:67ddc53e3983	3700	FATFS *fs;
neilt6	11:67ddc53e3983	3701	DSTATUS stat;
neilt6	11:67ddc53e3983	3702
neilt6	11:67ddc53e3983	3703
neilt6	11:67ddc53e3983	3704	/* Check mounted drive and clear work area */
neilt6	11:67ddc53e3983	3705	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
neilt6	11:67ddc53e3983	3706	if (sfd > 1) return FR_INVALID_PARAMETER;
neilt6	11:67ddc53e3983	3707	if (au & (au - 1)) return FR_INVALID_PARAMETER;
neilt6	11:67ddc53e3983	3708	fs = FatFs[drv];
neilt6	11:67ddc53e3983	3709	if (!fs) return FR_NOT_ENABLED;
neilt6	11:67ddc53e3983	3710	fs->fs_type = 0;
neilt6	11:67ddc53e3983	3711	pdrv = LD2PD(drv); /* Physical drive */
neilt6	11:67ddc53e3983	3712	part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/
neilt6	11:67ddc53e3983	3713
neilt6	11:67ddc53e3983	3714	/* Get disk statics */
neilt6	11:67ddc53e3983	3715	stat = disk_initialize(pdrv);
neilt6	11:67ddc53e3983	3716	if (stat & STA_NOINIT) return FR_NOT_READY;
neilt6	11:67ddc53e3983	3717	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
neilt6	11:67ddc53e3983	3718	#if _MAX_SS != 512 /* Get disk sector size */
neilt6	11:67ddc53e3983	3719	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK \|\| SS(fs) > _MAX_SS)
neilt6	11:67ddc53e3983	3720	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3721	#endif
neilt6	11:67ddc53e3983	3722	if (_MULTI_PARTITION && part) {
neilt6	11:67ddc53e3983	3723	/* Get partition information from partition table in the MBR */
neilt6	11:67ddc53e3983	3724	if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3725	if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
neilt6	11:67ddc53e3983	3726	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
neilt6	11:67ddc53e3983	3727	if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
neilt6	11:67ddc53e3983	3728	b_vol = LD_DWORD(tbl+8); /* Volume start sector */
neilt6	11:67ddc53e3983	3729	n_vol = LD_DWORD(tbl+12); /* Volume size */
neilt6	11:67ddc53e3983	3730	} else {
neilt6	11:67ddc53e3983	3731	/* Create a partition in this function */
neilt6	11:67ddc53e3983	3732	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK \|\| n_vol < 128)
neilt6	11:67ddc53e3983	3733	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3734	b_vol = (sfd) ? 0 : 63; /* Volume start sector */
neilt6	11:67ddc53e3983	3735	n_vol -= b_vol; /* Volume size */
neilt6	11:67ddc53e3983	3736	}
neilt6	11:67ddc53e3983	3737
neilt6	11:67ddc53e3983	3738	if (!au) { /* AU auto selection */
neilt6	11:67ddc53e3983	3739	vs = n_vol / (2000 / (SS(fs) / 512));
neilt6	11:67ddc53e3983	3740	for (i = 0; vs < vst[i]; i++) ;
neilt6	11:67ddc53e3983	3741	au = cst[i];
neilt6	11:67ddc53e3983	3742	}
neilt6	11:67ddc53e3983	3743	au /= SS(fs); /* Number of sectors per cluster */
neilt6	11:67ddc53e3983	3744	if (au == 0) au = 1;
neilt6	11:67ddc53e3983	3745	if (au > 128) au = 128;
neilt6	11:67ddc53e3983	3746
neilt6	11:67ddc53e3983	3747	/* Pre-compute number of clusters and FAT sub-type */
neilt6	11:67ddc53e3983	3748	n_clst = n_vol / au;
neilt6	11:67ddc53e3983	3749	fmt = FS_FAT12;
neilt6	11:67ddc53e3983	3750	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
neilt6	11:67ddc53e3983	3751	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
neilt6	11:67ddc53e3983	3752
neilt6	11:67ddc53e3983	3753	/* Determine offset and size of FAT structure */
neilt6	11:67ddc53e3983	3754	if (fmt == FS_FAT32) {
neilt6	11:67ddc53e3983	3755	n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
neilt6	11:67ddc53e3983	3756	n_rsv = 32;
neilt6	11:67ddc53e3983	3757	n_dir = 0;
neilt6	11:67ddc53e3983	3758	} else {
neilt6	11:67ddc53e3983	3759	n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
neilt6	11:67ddc53e3983	3760	n_fat = (n_fat + SS(fs) - 1) / SS(fs);
neilt6	11:67ddc53e3983	3761	n_rsv = 1;
neilt6	11:67ddc53e3983	3762	n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
neilt6	11:67ddc53e3983	3763	}
neilt6	11:67ddc53e3983	3764	b_fat = b_vol + n_rsv; /* FAT area start sector */
neilt6	11:67ddc53e3983	3765	b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
neilt6	11:67ddc53e3983	3766	b_data = b_dir + n_dir; /* Data area start sector */
neilt6	11:67ddc53e3983	3767	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
neilt6	11:67ddc53e3983	3768
neilt6	11:67ddc53e3983	3769	/* Align data start sector to erase block boundary (for flash memory media) */
neilt6	11:67ddc53e3983	3770	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK \|\| !n \|\| n > 32768) n = 1;
neilt6	11:67ddc53e3983	3771	n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
neilt6	11:67ddc53e3983	3772	n = (n - b_data) / N_FATS;
neilt6	11:67ddc53e3983	3773	if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
neilt6	11:67ddc53e3983	3774	n_rsv += n;
neilt6	11:67ddc53e3983	3775	b_fat += n;
neilt6	11:67ddc53e3983	3776	} else { /* FAT12/16: Expand FAT size */
neilt6	11:67ddc53e3983	3777	n_fat += n;
neilt6	11:67ddc53e3983	3778	}
neilt6	11:67ddc53e3983	3779
neilt6	11:67ddc53e3983	3780	/* Determine number of clusters and final check of validity of the FAT sub-type */
neilt6	11:67ddc53e3983	3781	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
neilt6	11:67ddc53e3983	3782	if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
neilt6	11:67ddc53e3983	3783	\|\| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
neilt6	11:67ddc53e3983	3784	return FR_MKFS_ABORTED;
neilt6	11:67ddc53e3983	3785
neilt6	11:67ddc53e3983	3786	switch (fmt) { /* Determine system ID for partition table */
neilt6	11:67ddc53e3983	3787	case FS_FAT12:
neilt6	11:67ddc53e3983	3788	sys = 0x01;
neilt6	11:67ddc53e3983	3789	break;
neilt6	11:67ddc53e3983	3790	case FS_FAT16:
neilt6	11:67ddc53e3983	3791	sys = (n_vol < 0x10000) ? 0x04 : 0x06;
neilt6	11:67ddc53e3983	3792	break;
neilt6	11:67ddc53e3983	3793	default:
neilt6	11:67ddc53e3983	3794	sys = 0x0C;
neilt6	11:67ddc53e3983	3795	}
neilt6	11:67ddc53e3983	3796
neilt6	11:67ddc53e3983	3797	if (_MULTI_PARTITION && part) {
neilt6	11:67ddc53e3983	3798	/* Update system ID in the partition table */
neilt6	11:67ddc53e3983	3799	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
neilt6	11:67ddc53e3983	3800	tbl[4] = sys;
neilt6	11:67ddc53e3983	3801	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3802	md = 0xF8;
neilt6	11:67ddc53e3983	3803	} else {
neilt6	11:67ddc53e3983	3804	if (sfd) { /* No partition table (SFD) */
neilt6	11:67ddc53e3983	3805	md = 0xF0;
neilt6	11:67ddc53e3983	3806	} else { /* Create partition table (FDISK) */
neilt6	11:67ddc53e3983	3807	mem_set(fs->win, 0, SS(fs));
neilt6	11:67ddc53e3983	3808	tbl = fs->win+MBR_Table; /* Create partition table for single partition in the drive */
neilt6	11:67ddc53e3983	3809	tbl[1] = 1; /* Partition start head */
neilt6	11:67ddc53e3983	3810	tbl[2] = 1; /* Partition start sector */
neilt6	11:67ddc53e3983	3811	tbl[3] = 0; /* Partition start cylinder */
neilt6	11:67ddc53e3983	3812	tbl[4] = sys; /* System type */
neilt6	11:67ddc53e3983	3813	tbl[5] = 254; /* Partition end head */
neilt6	11:67ddc53e3983	3814	n = (b_vol + n_vol) / 63 / 255;
neilt6	11:67ddc53e3983	3815	tbl[6] = (BYTE)((n >> 2) \| 63); /* Partition end sector */
neilt6	11:67ddc53e3983	3816	tbl[7] = (BYTE)n; /* End cylinder */
neilt6	11:67ddc53e3983	3817	ST_DWORD(tbl+8, 63); /* Partition start in LBA */
neilt6	11:67ddc53e3983	3818	ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
neilt6	11:67ddc53e3983	3819	ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
neilt6	11:67ddc53e3983	3820	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */
neilt6	11:67ddc53e3983	3821	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3822	md = 0xF8;
neilt6	11:67ddc53e3983	3823	}
neilt6	11:67ddc53e3983	3824	}
neilt6	11:67ddc53e3983	3825
neilt6	11:67ddc53e3983	3826	/* Create BPB in the VBR */
neilt6	11:67ddc53e3983	3827	tbl = fs->win; /* Clear sector */
neilt6	11:67ddc53e3983	3828	mem_set(tbl, 0, SS(fs));
neilt6	11:67ddc53e3983	3829	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
neilt6	11:67ddc53e3983	3830	i = SS(fs); /* Sector size */
neilt6	11:67ddc53e3983	3831	ST_WORD(tbl+BPB_BytsPerSec, i);
neilt6	11:67ddc53e3983	3832	tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
neilt6	11:67ddc53e3983	3833	ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
neilt6	11:67ddc53e3983	3834	tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
neilt6	11:67ddc53e3983	3835	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
neilt6	11:67ddc53e3983	3836	ST_WORD(tbl+BPB_RootEntCnt, i);
neilt6	11:67ddc53e3983	3837	if (n_vol < 0x10000) { /* Number of total sectors */
neilt6	11:67ddc53e3983	3838	ST_WORD(tbl+BPB_TotSec16, n_vol);
neilt6	11:67ddc53e3983	3839	} else {
neilt6	11:67ddc53e3983	3840	ST_DWORD(tbl+BPB_TotSec32, n_vol);
neilt6	11:67ddc53e3983	3841	}
neilt6	11:67ddc53e3983	3842	tbl[BPB_Media] = md; /* Media descriptor */
neilt6	11:67ddc53e3983	3843	ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
neilt6	11:67ddc53e3983	3844	ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
neilt6	11:67ddc53e3983	3845	ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
neilt6	11:67ddc53e3983	3846	n = get_fattime(); /* Use current time as VSN */
neilt6	11:67ddc53e3983	3847	if (fmt == FS_FAT32) {
neilt6	11:67ddc53e3983	3848	ST_DWORD(tbl+BS_VolID32, n); /* VSN */
neilt6	11:67ddc53e3983	3849	ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
neilt6	11:67ddc53e3983	3850	ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
neilt6	11:67ddc53e3983	3851	ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
neilt6	11:67ddc53e3983	3852	ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
neilt6	11:67ddc53e3983	3853	tbl[BS_DrvNum32] = 0x80; /* Drive number */
neilt6	11:67ddc53e3983	3854	tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
neilt6	11:67ddc53e3983	3855	mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
neilt6	11:67ddc53e3983	3856	} else {
neilt6	11:67ddc53e3983	3857	ST_DWORD(tbl+BS_VolID, n); /* VSN */
neilt6	11:67ddc53e3983	3858	ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
neilt6	11:67ddc53e3983	3859	tbl[BS_DrvNum] = 0x80; /* Drive number */
neilt6	11:67ddc53e3983	3860	tbl[BS_BootSig] = 0x29; /* Extended boot signature */
neilt6	11:67ddc53e3983	3861	mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
neilt6	11:67ddc53e3983	3862	}
neilt6	11:67ddc53e3983	3863	ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
neilt6	11:67ddc53e3983	3864	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
neilt6	11:67ddc53e3983	3865	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3866	if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
neilt6	11:67ddc53e3983	3867	disk_write(pdrv, tbl, b_vol + 6, 1);
neilt6	11:67ddc53e3983	3868
neilt6	11:67ddc53e3983	3869	/* Initialize FAT area */
neilt6	11:67ddc53e3983	3870	wsect = b_fat;
neilt6	11:67ddc53e3983	3871	for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
neilt6	11:67ddc53e3983	3872	mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
neilt6	11:67ddc53e3983	3873	n = md; /* Media descriptor byte */
neilt6	11:67ddc53e3983	3874	if (fmt != FS_FAT32) {
neilt6	11:67ddc53e3983	3875	n \|= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
neilt6	11:67ddc53e3983	3876	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
neilt6	11:67ddc53e3983	3877	} else {
neilt6	11:67ddc53e3983	3878	n \|= 0xFFFFFF00;
neilt6	11:67ddc53e3983	3879	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
neilt6	11:67ddc53e3983	3880	ST_DWORD(tbl+4, 0xFFFFFFFF);
neilt6	11:67ddc53e3983	3881	ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
neilt6	11:67ddc53e3983	3882	}
neilt6	11:67ddc53e3983	3883	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
neilt6	11:67ddc53e3983	3884	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3885	mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
neilt6	11:67ddc53e3983	3886	for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
neilt6	11:67ddc53e3983	3887	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
neilt6	11:67ddc53e3983	3888	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3889	}
neilt6	11:67ddc53e3983	3890	}
neilt6	11:67ddc53e3983	3891
neilt6	11:67ddc53e3983	3892	/* Initialize root directory */
neilt6	11:67ddc53e3983	3893	i = (fmt == FS_FAT32) ? au : n_dir;
neilt6	11:67ddc53e3983	3894	do {
neilt6	11:67ddc53e3983	3895	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
neilt6	11:67ddc53e3983	3896	return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3897	} while (--i);
neilt6	11:67ddc53e3983	3898
neilt6	11:67ddc53e3983	3899	#if _USE_ERASE /* Erase data area if needed */
neilt6	11:67ddc53e3983	3900	{
neilt6	11:67ddc53e3983	3901	DWORD eb[2];
neilt6	11:67ddc53e3983	3902
neilt6	11:67ddc53e3983	3903	eb[0] = wsect;
neilt6	11:67ddc53e3983	3904	eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
neilt6	11:67ddc53e3983	3905	disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb);
neilt6	11:67ddc53e3983	3906	}
neilt6	11:67ddc53e3983	3907	#endif
neilt6	11:67ddc53e3983	3908
neilt6	11:67ddc53e3983	3909	/* Create FSInfo if needed */
neilt6	11:67ddc53e3983	3910	if (fmt == FS_FAT32) {
neilt6	11:67ddc53e3983	3911	ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
neilt6	11:67ddc53e3983	3912	ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
neilt6	11:67ddc53e3983	3913	ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
neilt6	11:67ddc53e3983	3914	ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
neilt6	11:67ddc53e3983	3915	ST_WORD(tbl+BS_55AA, 0xAA55);
neilt6	11:67ddc53e3983	3916	disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
neilt6	11:67ddc53e3983	3917	disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
neilt6	11:67ddc53e3983	3918	}
neilt6	11:67ddc53e3983	3919
neilt6	11:67ddc53e3983	3920	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
neilt6	11:67ddc53e3983	3921	}
neilt6	11:67ddc53e3983	3922
neilt6	11:67ddc53e3983	3923
neilt6	11:67ddc53e3983	3924	#if _MULTI_PARTITION == 2
neilt6	11:67ddc53e3983	3925	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3926	/* Divide Physical Drive */
neilt6	11:67ddc53e3983	3927	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	3928
neilt6	11:67ddc53e3983	3929	FRESULT f_fdisk (
neilt6	11:67ddc53e3983	3930	BYTE pdrv, /* Physical drive number */
neilt6	11:67ddc53e3983	3931	const DWORD szt[], /* Pointer to the size table for each partitions */
neilt6	11:67ddc53e3983	3932	void* work /* Pointer to the working buffer */
neilt6	11:67ddc53e3983	3933	)
neilt6	11:67ddc53e3983	3934	{
neilt6	11:67ddc53e3983	3935	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
neilt6	11:67ddc53e3983	3936	BYTE s_hd, e_hd, p, buf = (BYTE*)work;
neilt6	11:67ddc53e3983	3937	DSTATUS stat;
neilt6	11:67ddc53e3983	3938	DWORD sz_disk, sz_part, s_part;
neilt6	11:67ddc53e3983	3939
neilt6	11:67ddc53e3983	3940
neilt6	11:67ddc53e3983	3941	stat = disk_initialize(pdrv);
neilt6	11:67ddc53e3983	3942	if (stat & STA_NOINIT) return FR_NOT_READY;
neilt6	11:67ddc53e3983	3943	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
neilt6	11:67ddc53e3983	3944	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
neilt6	11:67ddc53e3983	3945
neilt6	11:67ddc53e3983	3946	/* Determine CHS in the table regardless of the drive geometry */
neilt6	11:67ddc53e3983	3947	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
neilt6	11:67ddc53e3983	3948	if (n == 256) n--;
neilt6	11:67ddc53e3983	3949	e_hd = n - 1;
neilt6	11:67ddc53e3983	3950	sz_cyl = 63 * n;
neilt6	11:67ddc53e3983	3951	tot_cyl = sz_disk / sz_cyl;
neilt6	11:67ddc53e3983	3952
neilt6	11:67ddc53e3983	3953	/* Create partition table */
neilt6	11:67ddc53e3983	3954	mem_set(buf, 0, _MAX_SS);
neilt6	11:67ddc53e3983	3955	p = buf + MBR_Table;
neilt6	11:67ddc53e3983	3956	b_cyl = 0;
neilt6	11:67ddc53e3983	3957	for (i = 0; i < 4; i++, p += SZ_PTE) {
neilt6	11:67ddc53e3983	3958	p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
neilt6	11:67ddc53e3983	3959	if (!p_cyl) continue;
neilt6	11:67ddc53e3983	3960	s_part = (DWORD)sz_cyl * b_cyl;
neilt6	11:67ddc53e3983	3961	sz_part = (DWORD)sz_cyl * p_cyl;
neilt6	11:67ddc53e3983	3962	if (i == 0) { /* Exclude first track of cylinder 0 */
neilt6	11:67ddc53e3983	3963	s_hd = 1;
neilt6	11:67ddc53e3983	3964	s_part += 63;
neilt6	11:67ddc53e3983	3965	sz_part -= 63;
neilt6	11:67ddc53e3983	3966	} else {
neilt6	11:67ddc53e3983	3967	s_hd = 0;
neilt6	11:67ddc53e3983	3968	}
neilt6	11:67ddc53e3983	3969	e_cyl = b_cyl + p_cyl - 1;
neilt6	11:67ddc53e3983	3970	if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
neilt6	11:67ddc53e3983	3971
neilt6	11:67ddc53e3983	3972	/* Set partition table */
neilt6	11:67ddc53e3983	3973	p[1] = s_hd; /* Start head */
neilt6	11:67ddc53e3983	3974	p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
neilt6	11:67ddc53e3983	3975	p[3] = (BYTE)b_cyl; /* Start cylinder */
neilt6	11:67ddc53e3983	3976	p[4] = 0x06; /* System type (temporary setting) */
neilt6	11:67ddc53e3983	3977	p[5] = e_hd; /* End head */
neilt6	11:67ddc53e3983	3978	p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
neilt6	11:67ddc53e3983	3979	p[7] = (BYTE)e_cyl; /* End cylinder */
neilt6	11:67ddc53e3983	3980	ST_DWORD(p + 8, s_part); /* Start sector in LBA */
neilt6	11:67ddc53e3983	3981	ST_DWORD(p + 12, sz_part); /* Partition size */
neilt6	11:67ddc53e3983	3982
neilt6	11:67ddc53e3983	3983	/* Next partition */
neilt6	11:67ddc53e3983	3984	b_cyl += p_cyl;
neilt6	11:67ddc53e3983	3985	}
neilt6	11:67ddc53e3983	3986	ST_WORD(p, 0xAA55);
neilt6	11:67ddc53e3983	3987
neilt6	11:67ddc53e3983	3988	/* Write it to the MBR */
neilt6	11:67ddc53e3983	3989	return (disk_write(pdrv, buf, 0, 1) \|\| disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK;
neilt6	11:67ddc53e3983	3990	}
neilt6	11:67ddc53e3983	3991
neilt6	11:67ddc53e3983	3992
neilt6	11:67ddc53e3983	3993	#endif /* _MULTI_PARTITION == 2 */
neilt6	11:67ddc53e3983	3994	#endif /* _USE_MKFS && !_FS_READONLY */
neilt6	11:67ddc53e3983	3995
neilt6	11:67ddc53e3983	3996
neilt6	11:67ddc53e3983	3997
neilt6	11:67ddc53e3983	3998
neilt6	11:67ddc53e3983	3999	#if _USE_STRFUNC
neilt6	11:67ddc53e3983	4000	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4001	/* Get a string from the file */
neilt6	11:67ddc53e3983	4002	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4003	TCHAR* f_gets (
neilt6	11:67ddc53e3983	4004	TCHAR* buff, /* Pointer to the string buffer to read */
neilt6	11:67ddc53e3983	4005	int len, /* Size of string buffer (characters) */
neilt6	11:67ddc53e3983	4006	FIL* fil /* Pointer to the file object */
neilt6	11:67ddc53e3983	4007	)
neilt6	11:67ddc53e3983	4008	{
neilt6	11:67ddc53e3983	4009	int n = 0;
neilt6	11:67ddc53e3983	4010	TCHAR c, *p = buff;
neilt6	11:67ddc53e3983	4011	BYTE s[2];
neilt6	11:67ddc53e3983	4012	UINT rc;
neilt6	11:67ddc53e3983	4013
neilt6	11:67ddc53e3983	4014
neilt6	11:67ddc53e3983	4015	while (n < len - 1) { /* Read bytes until buffer gets filled */
neilt6	11:67ddc53e3983	4016	f_read(fil, s, 1, &rc);
neilt6	11:67ddc53e3983	4017	if (rc != 1) break; /* Break on EOF or error */
neilt6	11:67ddc53e3983	4018	c = s[0];
neilt6	11:67ddc53e3983	4019	#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
neilt6	11:67ddc53e3983	4020	if (c >= 0x80) {
neilt6	11:67ddc53e3983	4021	if (c < 0xC0) continue; /* Skip stray trailer */
neilt6	11:67ddc53e3983	4022	if (c < 0xE0) { /* Two-byte sequence */
neilt6	11:67ddc53e3983	4023	f_read(fil, s, 1, &rc);
neilt6	11:67ddc53e3983	4024	if (rc != 1) break;
neilt6	11:67ddc53e3983	4025	c = ((c & 0x1F) << 6) \| (s[0] & 0x3F);
neilt6	11:67ddc53e3983	4026	if (c < 0x80) c = '?';
neilt6	11:67ddc53e3983	4027	} else {
neilt6	11:67ddc53e3983	4028	if (c < 0xF0) { /* Three-byte sequence */
neilt6	11:67ddc53e3983	4029	f_read(fil, s, 2, &rc);
neilt6	11:67ddc53e3983	4030	if (rc != 2) break;
neilt6	11:67ddc53e3983	4031	c = (c << 12) \| ((s[0] & 0x3F) << 6) \| (s[1] & 0x3F);
neilt6	11:67ddc53e3983	4032	if (c < 0x800) c = '?';
neilt6	11:67ddc53e3983	4033	} else { /* Reject four-byte sequence */
neilt6	11:67ddc53e3983	4034	c = '?';
neilt6	11:67ddc53e3983	4035	}
neilt6	11:67ddc53e3983	4036	}
neilt6	11:67ddc53e3983	4037	}
neilt6	11:67ddc53e3983	4038	#endif
neilt6	11:67ddc53e3983	4039	#if _USE_STRFUNC >= 2
neilt6	11:67ddc53e3983	4040	if (c == '\r') continue; /* Strip '\r' */
neilt6	11:67ddc53e3983	4041	#endif
neilt6	11:67ddc53e3983	4042	*p++ = c;
neilt6	11:67ddc53e3983	4043	n++;
neilt6	11:67ddc53e3983	4044	if (c == '\n') break; /* Break on EOL */
neilt6	11:67ddc53e3983	4045	}
neilt6	11:67ddc53e3983	4046	*p = 0;
neilt6	11:67ddc53e3983	4047	return n ? buff : 0; /* When no data read (eof or error), return with error. */
neilt6	11:67ddc53e3983	4048	}
neilt6	11:67ddc53e3983	4049
neilt6	11:67ddc53e3983	4050
neilt6	11:67ddc53e3983	4051
neilt6	11:67ddc53e3983	4052	#if !_FS_READONLY
neilt6	11:67ddc53e3983	4053	#include <stdarg.h>
neilt6	11:67ddc53e3983	4054	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4055	/* Put a character to the file */
neilt6	11:67ddc53e3983	4056	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4057	int f_putc (
neilt6	11:67ddc53e3983	4058	TCHAR c, /* A character to be output */
neilt6	11:67ddc53e3983	4059	FIL* fil /* Pointer to the file object */
neilt6	11:67ddc53e3983	4060	)
neilt6	11:67ddc53e3983	4061	{
neilt6	11:67ddc53e3983	4062	UINT bw, btw;
neilt6	11:67ddc53e3983	4063	BYTE s[3];
neilt6	11:67ddc53e3983	4064
neilt6	11:67ddc53e3983	4065
neilt6	11:67ddc53e3983	4066	#if _USE_STRFUNC >= 2
neilt6	11:67ddc53e3983	4067	if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
neilt6	11:67ddc53e3983	4068	#endif
neilt6	11:67ddc53e3983	4069
neilt6	11:67ddc53e3983	4070	#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
neilt6	11:67ddc53e3983	4071	if (c < 0x80) { /* 7-bit */
neilt6	11:67ddc53e3983	4072	s[0] = (BYTE)c;
neilt6	11:67ddc53e3983	4073	btw = 1;
neilt6	11:67ddc53e3983	4074	} else {
neilt6	11:67ddc53e3983	4075	if (c < 0x800) { /* 11-bit */
neilt6	11:67ddc53e3983	4076	s[0] = (BYTE)(0xC0 \| (c >> 6));
neilt6	11:67ddc53e3983	4077	s[1] = (BYTE)(0x80 \| (c & 0x3F));
neilt6	11:67ddc53e3983	4078	btw = 2;
neilt6	11:67ddc53e3983	4079	} else { /* 16-bit */
neilt6	11:67ddc53e3983	4080	s[0] = (BYTE)(0xE0 \| (c >> 12));
neilt6	11:67ddc53e3983	4081	s[1] = (BYTE)(0x80 \| ((c >> 6) & 0x3F));
neilt6	11:67ddc53e3983	4082	s[2] = (BYTE)(0x80 \| (c & 0x3F));
neilt6	11:67ddc53e3983	4083	btw = 3;
neilt6	11:67ddc53e3983	4084	}
neilt6	11:67ddc53e3983	4085	}
neilt6	11:67ddc53e3983	4086	#else /* Write the character without conversion */
neilt6	11:67ddc53e3983	4087	s[0] = (BYTE)c;
neilt6	11:67ddc53e3983	4088	btw = 1;
neilt6	11:67ddc53e3983	4089	#endif
neilt6	11:67ddc53e3983	4090	f_write(fil, s, btw, &bw); /* Write the char to the file */
neilt6	11:67ddc53e3983	4091	return (bw == btw) ? 1 : EOF; /* Return the result */
neilt6	11:67ddc53e3983	4092	}
neilt6	11:67ddc53e3983	4093
neilt6	11:67ddc53e3983	4094
neilt6	11:67ddc53e3983	4095
neilt6	11:67ddc53e3983	4096
neilt6	11:67ddc53e3983	4097	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4098	/* Put a string to the file */
neilt6	11:67ddc53e3983	4099	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4100	int f_puts (
neilt6	11:67ddc53e3983	4101	const TCHAR* str, /* Pointer to the string to be output */
neilt6	11:67ddc53e3983	4102	FIL* fil /* Pointer to the file object */
neilt6	11:67ddc53e3983	4103	)
neilt6	11:67ddc53e3983	4104	{
neilt6	11:67ddc53e3983	4105	int n;
neilt6	11:67ddc53e3983	4106
neilt6	11:67ddc53e3983	4107
neilt6	11:67ddc53e3983	4108	for (n = 0; *str; str++, n++) {
neilt6	11:67ddc53e3983	4109	if (f_putc(*str, fil) == EOF) return EOF;
neilt6	11:67ddc53e3983	4110	}
neilt6	11:67ddc53e3983	4111	return n;
neilt6	11:67ddc53e3983	4112	}
neilt6	11:67ddc53e3983	4113
neilt6	11:67ddc53e3983	4114
neilt6	11:67ddc53e3983	4115
neilt6	11:67ddc53e3983	4116
neilt6	11:67ddc53e3983	4117	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4118	/* Put a formatted string to the file */
neilt6	11:67ddc53e3983	4119	/-----------------------------------------------------------------------/
neilt6	11:67ddc53e3983	4120	int f_printf (
neilt6	11:67ddc53e3983	4121	FIL* fil, /* Pointer to the file object */
neilt6	11:67ddc53e3983	4122	const TCHAR* str, /* Pointer to the format string */
neilt6	11:67ddc53e3983	4123	... /* Optional arguments... */
neilt6	11:67ddc53e3983	4124	)
neilt6	11:67ddc53e3983	4125	{
neilt6	11:67ddc53e3983	4126	va_list arp;
neilt6	11:67ddc53e3983	4127	BYTE f, r;
neilt6	11:67ddc53e3983	4128	UINT i, j, w;
neilt6	11:67ddc53e3983	4129	ULONG v;
neilt6	11:67ddc53e3983	4130	TCHAR c, d, s[16], *p;
neilt6	11:67ddc53e3983	4131	int res, chc, cc;
neilt6	11:67ddc53e3983	4132
neilt6	11:67ddc53e3983	4133
neilt6	11:67ddc53e3983	4134	va_start(arp, str);
neilt6	11:67ddc53e3983	4135
neilt6	11:67ddc53e3983	4136	for (cc = res = 0; cc != EOF; res += cc) {
neilt6	11:67ddc53e3983	4137	c = *str++;
neilt6	11:67ddc53e3983	4138	if (c == 0) break; /* End of string */
neilt6	11:67ddc53e3983	4139	if (c != '%') { /* Non escape character */
neilt6	11:67ddc53e3983	4140	cc = f_putc(c, fil);
neilt6	11:67ddc53e3983	4141	if (cc != EOF) cc = 1;
neilt6	11:67ddc53e3983	4142	continue;
neilt6	11:67ddc53e3983	4143	}
neilt6	11:67ddc53e3983	4144	w = f = 0;
neilt6	11:67ddc53e3983	4145	c = *str++;
neilt6	11:67ddc53e3983	4146	if (c == '0') { /* Flag: '0' padding */
neilt6	11:67ddc53e3983	4147	f = 1;
neilt6	11:67ddc53e3983	4148	c = *str++;
neilt6	11:67ddc53e3983	4149	} else {
neilt6	11:67ddc53e3983	4150	if (c == '-') { /* Flag: left justified */
neilt6	11:67ddc53e3983	4151	f = 2;
neilt6	11:67ddc53e3983	4152	c = *str++;
neilt6	11:67ddc53e3983	4153	}
neilt6	11:67ddc53e3983	4154	}
neilt6	11:67ddc53e3983	4155	while (IsDigit(c)) { /* Precision */
neilt6	11:67ddc53e3983	4156	w = w * 10 + c - '0';
neilt6	11:67ddc53e3983	4157	c = *str++;
neilt6	11:67ddc53e3983	4158	}
neilt6	11:67ddc53e3983	4159	if (c == 'l' \|\| c == 'L') { /* Prefix: Size is long int */
neilt6	11:67ddc53e3983	4160	f \|= 4;
neilt6	11:67ddc53e3983	4161	c = *str++;
neilt6	11:67ddc53e3983	4162	}
neilt6	11:67ddc53e3983	4163	if (!c) break;
neilt6	11:67ddc53e3983	4164	d = c;
neilt6	11:67ddc53e3983	4165	if (IsLower(d)) d -= 0x20;
neilt6	11:67ddc53e3983	4166	switch (d) { /* Type is... */
neilt6	11:67ddc53e3983	4167	case 'S' : /* String */
neilt6	11:67ddc53e3983	4168	p = va_arg(arp, TCHAR*);
neilt6	11:67ddc53e3983	4169	for (j = 0; p[j]; j++) ;
neilt6	11:67ddc53e3983	4170	chc = 0;
neilt6	11:67ddc53e3983	4171	if (!(f & 2)) {
neilt6	11:67ddc53e3983	4172	while (j++ < w) chc += (cc = f_putc(' ', fil));
neilt6	11:67ddc53e3983	4173	}
neilt6	11:67ddc53e3983	4174	chc += (cc = f_puts(p, fil));
neilt6	11:67ddc53e3983	4175	while (j++ < w) chc += (cc = f_putc(' ', fil));
neilt6	11:67ddc53e3983	4176	if (cc != EOF) cc = chc;
neilt6	11:67ddc53e3983	4177	continue;
neilt6	11:67ddc53e3983	4178	case 'C' : /* Character */
neilt6	11:67ddc53e3983	4179	cc = f_putc((TCHAR)va_arg(arp, int), fil);
neilt6	11:67ddc53e3983	4180	continue;
neilt6	11:67ddc53e3983	4181	case 'B' : /* Binary */
neilt6	11:67ddc53e3983	4182	r = 2;
neilt6	11:67ddc53e3983	4183	break;
neilt6	11:67ddc53e3983	4184	case 'O' : /* Octal */
neilt6	11:67ddc53e3983	4185	r = 8;
neilt6	11:67ddc53e3983	4186	break;
neilt6	11:67ddc53e3983	4187	case 'D' : /* Signed decimal */
neilt6	11:67ddc53e3983	4188	case 'U' : /* Unsigned decimal */
neilt6	11:67ddc53e3983	4189	r = 10;
neilt6	11:67ddc53e3983	4190	break;
neilt6	11:67ddc53e3983	4191	case 'X' : /* Hexdecimal */
neilt6	11:67ddc53e3983	4192	r = 16;
neilt6	11:67ddc53e3983	4193	break;
neilt6	11:67ddc53e3983	4194	default: /* Unknown type (pass-through) */
neilt6	11:67ddc53e3983	4195	cc = f_putc(c, fil);
neilt6	11:67ddc53e3983	4196	continue;
neilt6	11:67ddc53e3983	4197	}
neilt6	11:67ddc53e3983	4198
neilt6	11:67ddc53e3983	4199	/* Get an argument and put it in numeral */
neilt6	11:67ddc53e3983	4200	v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int));
neilt6	11:67ddc53e3983	4201	if (d == 'D' && (v & 0x80000000)) {
neilt6	11:67ddc53e3983	4202	v = 0 - v;
neilt6	11:67ddc53e3983	4203	f \|= 8;
neilt6	11:67ddc53e3983	4204	}
neilt6	11:67ddc53e3983	4205	i = 0;
neilt6	11:67ddc53e3983	4206	do {
neilt6	11:67ddc53e3983	4207	d = (TCHAR)(v % r);
neilt6	11:67ddc53e3983	4208	v /= r;
neilt6	11:67ddc53e3983	4209	if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
neilt6	11:67ddc53e3983	4210	s[i++] = d + '0';
neilt6	11:67ddc53e3983	4211	} while (v && i < sizeof s / sizeof s[0]);
neilt6	11:67ddc53e3983	4212	if (f & 8) s[i++] = '-';
neilt6	11:67ddc53e3983	4213	j = i;
neilt6	11:67ddc53e3983	4214	d = (f & 1) ? '0' : ' ';
neilt6	11:67ddc53e3983	4215	res = 0;
neilt6	11:67ddc53e3983	4216	while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
neilt6	11:67ddc53e3983	4217	do res += (cc = f_putc(s[--i], fil));
neilt6	11:67ddc53e3983	4218	while(i);
neilt6	11:67ddc53e3983	4219	while (j++ < w) res += (cc = f_putc(' ', fil));
neilt6	11:67ddc53e3983	4220	if (cc != EOF) cc = res;
neilt6	11:67ddc53e3983	4221	}
neilt6	11:67ddc53e3983	4222
neilt6	11:67ddc53e3983	4223	va_end(arp);
neilt6	11:67ddc53e3983	4224	return (cc == EOF) ? cc : res;
neilt6	11:67ddc53e3983	4225	}
neilt6	11:67ddc53e3983	4226
neilt6	11:67ddc53e3983	4227	#endif /* !_FS_READONLY */
neilt6	11:67ddc53e3983	4228	#endif /* _USE_STRFUNC */

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Type:	Library
Created:	09 Feb 2018
Imports:	50
Forks:	0
Commits:	28
Dependents:	12
Dependencies:	1
Followers:	3

The code in this repository is MIT licensed.

FATFileSystem/ChaN/ff.cpp@11:67ddc53e3983, 2014-08-14 (annotated)

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