FATFileSystem - support up to 4 drives

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support up to 4 drives

Dependents: BaseUsbHost_example SimpleJpegDecode_example SD to Flash Data Transfer

Fork of FATFileSystem by mbed official

ChaN/ff.cpp@1:46ce1e16c870, 2012-11-27 (annotated)

Committer:: emilmont
Date:: Tue Nov 27 17:31:18 2012 +0000
Revision:: 1:46ce1e16c870

Commit FATFileSystem code

Who changed what in which revision?

User	Revision	Line number	New contents of line
emilmont	1:46ce1e16c870	1	/*----------------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2	/ FatFs - FAT file system module R0.09a (C)ChaN, 2012
emilmont	1:46ce1e16c870	3	/-----------------------------------------------------------------------------/
emilmont	1:46ce1e16c870	4	/ FatFs module is a generic FAT file system module for small embedded systems.
emilmont	1:46ce1e16c870	5	/ This is a free software that opened for education, research and commercial
emilmont	1:46ce1e16c870	6	/ developments under license policy of following terms.
emilmont	1:46ce1e16c870	7	/
emilmont	1:46ce1e16c870	8	/ Copyright (C) 2012, ChaN, all right reserved.
emilmont	1:46ce1e16c870	9	/
emilmont	1:46ce1e16c870	10	/ * The FatFs module is a free software and there is NO WARRANTY.
emilmont	1:46ce1e16c870	11	/ * No restriction on use. You can use, modify and redistribute it for
emilmont	1:46ce1e16c870	12	/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
emilmont	1:46ce1e16c870	13	/ * Redistributions of source code must retain the above copyright notice.
emilmont	1:46ce1e16c870	14	/
emilmont	1:46ce1e16c870	15	/-----------------------------------------------------------------------------/
emilmont	1:46ce1e16c870	16	/ Feb 26,'06 R0.00 Prototype.
emilmont	1:46ce1e16c870	17	/
emilmont	1:46ce1e16c870	18	/ Apr 29,'06 R0.01 First stable version.
emilmont	1:46ce1e16c870	19	/
emilmont	1:46ce1e16c870	20	/ Jun 01,'06 R0.02 Added FAT12 support.
emilmont	1:46ce1e16c870	21	/ Removed unbuffered mode.
emilmont	1:46ce1e16c870	22	/ Fixed a problem on small (<32M) partition.
emilmont	1:46ce1e16c870	23	/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
emilmont	1:46ce1e16c870	24	/
emilmont	1:46ce1e16c870	25	/ Sep 22,'06 R0.03 Added f_rename().
emilmont	1:46ce1e16c870	26	/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
emilmont	1:46ce1e16c870	27	/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
emilmont	1:46ce1e16c870	28	/ Fixed f_mkdir() creates incorrect directory on FAT32.
emilmont	1:46ce1e16c870	29	/
emilmont	1:46ce1e16c870	30	/ Feb 04,'07 R0.04 Supported multiple drive system.
emilmont	1:46ce1e16c870	31	/ Changed some interfaces for multiple drive system.
emilmont	1:46ce1e16c870	32	/ Changed f_mountdrv() to f_mount().
emilmont	1:46ce1e16c870	33	/ Added f_mkfs().
emilmont	1:46ce1e16c870	34	/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
emilmont	1:46ce1e16c870	35	/ Added a capability of extending file size to f_lseek().
emilmont	1:46ce1e16c870	36	/ Added minimization level 3.
emilmont	1:46ce1e16c870	37	/ Fixed an endian sensitive code in f_mkfs().
emilmont	1:46ce1e16c870	38	/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
emilmont	1:46ce1e16c870	39	/ Added FSInfo support.
emilmont	1:46ce1e16c870	40	/ Fixed DBCS name can result FR_INVALID_NAME.
emilmont	1:46ce1e16c870	41	/ Fixed short seek (<= csize) collapses the file object.
emilmont	1:46ce1e16c870	42	/
emilmont	1:46ce1e16c870	43	/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
emilmont	1:46ce1e16c870	44	/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
emilmont	1:46ce1e16c870	45	/ Fixed f_mkdir() on FAT32 creates incorrect directory.
emilmont	1:46ce1e16c870	46	/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
emilmont	1:46ce1e16c870	47	/ Fixed off by one error at FAT sub-type determination.
emilmont	1:46ce1e16c870	48	/ Fixed btr in f_read() can be mistruncated.
emilmont	1:46ce1e16c870	49	/ Fixed cached sector is not flushed when create and close without write.
emilmont	1:46ce1e16c870	50	/
emilmont	1:46ce1e16c870	51	/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
emilmont	1:46ce1e16c870	52	/ Improved performance of f_lseek() on moving to the same or following cluster.
emilmont	1:46ce1e16c870	53	/
emilmont	1:46ce1e16c870	54	/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
emilmont	1:46ce1e16c870	55	/ Added long file name feature.
emilmont	1:46ce1e16c870	56	/ Added multiple code page feature.
emilmont	1:46ce1e16c870	57	/ Added re-entrancy for multitask operation.
emilmont	1:46ce1e16c870	58	/ Added auto cluster size selection to f_mkfs().
emilmont	1:46ce1e16c870	59	/ Added rewind option to f_readdir().
emilmont	1:46ce1e16c870	60	/ Changed result code of critical errors.
emilmont	1:46ce1e16c870	61	/ Renamed string functions to avoid name collision.
emilmont	1:46ce1e16c870	62	/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
emilmont	1:46ce1e16c870	63	/ Added multiple sector size feature.
emilmont	1:46ce1e16c870	64	/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
emilmont	1:46ce1e16c870	65	/ Fixed wrong cache control in f_lseek().
emilmont	1:46ce1e16c870	66	/ Added relative path feature.
emilmont	1:46ce1e16c870	67	/ Added f_chdir() and f_chdrive().
emilmont	1:46ce1e16c870	68	/ Added proper case conversion to extended char.
emilmont	1:46ce1e16c870	69	/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
emilmont	1:46ce1e16c870	70	/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
emilmont	1:46ce1e16c870	71	/ Fixed name matching error on the 13 char boundary.
emilmont	1:46ce1e16c870	72	/ Added a configuration option, _LFN_UNICODE.
emilmont	1:46ce1e16c870	73	/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
emilmont	1:46ce1e16c870	74	/
emilmont	1:46ce1e16c870	75	/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
emilmont	1:46ce1e16c870	76	/ Added file lock feature. (_FS_SHARE)
emilmont	1:46ce1e16c870	77	/ Added fast seek feature. (_USE_FASTSEEK)
emilmont	1:46ce1e16c870	78	/ Changed some types on the API, XCHAR->TCHAR.
emilmont	1:46ce1e16c870	79	/ Changed fname member in the FILINFO structure on Unicode cfg.
emilmont	1:46ce1e16c870	80	/ String functions support UTF-8 encoding files on Unicode cfg.
emilmont	1:46ce1e16c870	81	/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
emilmont	1:46ce1e16c870	82	/ Added sector erase feature. (_USE_ERASE)
emilmont	1:46ce1e16c870	83	/ Moved file lock semaphore table from fs object to the bss.
emilmont	1:46ce1e16c870	84	/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
emilmont	1:46ce1e16c870	85	/ Fixed f_mkfs() creates wrong FAT32 volume.
emilmont	1:46ce1e16c870	86	/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
emilmont	1:46ce1e16c870	87	/ f_lseek() reports required table size on creating CLMP.
emilmont	1:46ce1e16c870	88	/ Extended format syntax of f_printf function.
emilmont	1:46ce1e16c870	89	/ Ignores duplicated directory separators in given path name.
emilmont	1:46ce1e16c870	90	/
emilmont	1:46ce1e16c870	91	/ Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature.
emilmont	1:46ce1e16c870	92	/ Added f_fdisk(). (_MULTI_PARTITION = 2)
emilmont	1:46ce1e16c870	93	/ Aug 27,'12 R0.09a Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
emilmont	1:46ce1e16c870	94	/ Changed f_open() and f_opendir reject null object pointer to avoid crash.
emilmont	1:46ce1e16c870	95	/ Changed option name _FS_SHARE to _FS_LOCK.
emilmont	1:46ce1e16c870	96	/---------------------------------------------------------------------------*/
emilmont	1:46ce1e16c870	97
emilmont	1:46ce1e16c870	98	#include "ff.h" /* FatFs configurations and declarations */
emilmont	1:46ce1e16c870	99	#include "diskio.h" /* Declarations of low level disk I/O functions */
emilmont	1:46ce1e16c870	100
emilmont	1:46ce1e16c870	101
emilmont	1:46ce1e16c870	102	/*--------------------------------------------------------------------------
emilmont	1:46ce1e16c870	103
emilmont	1:46ce1e16c870	104	Module Private Definitions
emilmont	1:46ce1e16c870	105
emilmont	1:46ce1e16c870	106	---------------------------------------------------------------------------*/
emilmont	1:46ce1e16c870	107
emilmont	1:46ce1e16c870	108	#if _FATFS != 4004 /* Revision ID */
emilmont	1:46ce1e16c870	109	#error Wrong include file (ff.h).
emilmont	1:46ce1e16c870	110	#endif
emilmont	1:46ce1e16c870	111
emilmont	1:46ce1e16c870	112
emilmont	1:46ce1e16c870	113	/* Definitions on sector size */
emilmont	1:46ce1e16c870	114	#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
emilmont	1:46ce1e16c870	115	#error Wrong sector size.
emilmont	1:46ce1e16c870	116	#endif
emilmont	1:46ce1e16c870	117	#if _MAX_SS != 512
emilmont	1:46ce1e16c870	118	#define SS(fs) ((fs)->ssize) /* Variable sector size */
emilmont	1:46ce1e16c870	119	#else
emilmont	1:46ce1e16c870	120	#define SS(fs) 512U /* Fixed sector size */
emilmont	1:46ce1e16c870	121	#endif
emilmont	1:46ce1e16c870	122
emilmont	1:46ce1e16c870	123
emilmont	1:46ce1e16c870	124	/* Reentrancy related */
emilmont	1:46ce1e16c870	125	#if _FS_REENTRANT
emilmont	1:46ce1e16c870	126	#if _USE_LFN == 1
emilmont	1:46ce1e16c870	127	#error Static LFN work area must not be used in re-entrant configuration.
emilmont	1:46ce1e16c870	128	#endif
emilmont	1:46ce1e16c870	129	#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
emilmont	1:46ce1e16c870	130	#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
emilmont	1:46ce1e16c870	131	#else
emilmont	1:46ce1e16c870	132	#define ENTER_FF(fs)
emilmont	1:46ce1e16c870	133	#define LEAVE_FF(fs, res) return res
emilmont	1:46ce1e16c870	134	#endif
emilmont	1:46ce1e16c870	135
emilmont	1:46ce1e16c870	136	#define ABORT(fs, res) { fp->flag \|= FA__ERROR; LEAVE_FF(fs, res); }
emilmont	1:46ce1e16c870	137
emilmont	1:46ce1e16c870	138
emilmont	1:46ce1e16c870	139	/* File access control feature */
emilmont	1:46ce1e16c870	140	#if _FS_LOCK
emilmont	1:46ce1e16c870	141	#if _FS_READONLY
emilmont	1:46ce1e16c870	142	#error _FS_LOCK must be 0 on read-only cfg.
emilmont	1:46ce1e16c870	143	#endif
emilmont	1:46ce1e16c870	144	typedef struct {
emilmont	1:46ce1e16c870	145	FATFS fs; / File ID 1, volume (NULL:blank entry) */
emilmont	1:46ce1e16c870	146	DWORD clu; /* File ID 2, directory */
emilmont	1:46ce1e16c870	147	WORD idx; /* File ID 3, directory index */
emilmont	1:46ce1e16c870	148	WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
emilmont	1:46ce1e16c870	149	} FILESEM;
emilmont	1:46ce1e16c870	150	#endif
emilmont	1:46ce1e16c870	151
emilmont	1:46ce1e16c870	152
emilmont	1:46ce1e16c870	153
emilmont	1:46ce1e16c870	154	/* DBCS code ranges and SBCS extend char conversion table */
emilmont	1:46ce1e16c870	155
emilmont	1:46ce1e16c870	156	#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
emilmont	1:46ce1e16c870	157	#define _DF1S 0x81 /* DBC 1st byte range 1 start */
emilmont	1:46ce1e16c870	158	#define _DF1E 0x9F /* DBC 1st byte range 1 end */
emilmont	1:46ce1e16c870	159	#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
emilmont	1:46ce1e16c870	160	#define _DF2E 0xFC /* DBC 1st byte range 2 end */
emilmont	1:46ce1e16c870	161	#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
emilmont	1:46ce1e16c870	162	#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
emilmont	1:46ce1e16c870	163	#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
emilmont	1:46ce1e16c870	164	#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
emilmont	1:46ce1e16c870	165
emilmont	1:46ce1e16c870	166	#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
emilmont	1:46ce1e16c870	167	#define _DF1S 0x81
emilmont	1:46ce1e16c870	168	#define _DF1E 0xFE
emilmont	1:46ce1e16c870	169	#define _DS1S 0x40
emilmont	1:46ce1e16c870	170	#define _DS1E 0x7E
emilmont	1:46ce1e16c870	171	#define _DS2S 0x80
emilmont	1:46ce1e16c870	172	#define _DS2E 0xFE
emilmont	1:46ce1e16c870	173
emilmont	1:46ce1e16c870	174	#elif _CODE_PAGE == 949 /* Korean */
emilmont	1:46ce1e16c870	175	#define _DF1S 0x81
emilmont	1:46ce1e16c870	176	#define _DF1E 0xFE
emilmont	1:46ce1e16c870	177	#define _DS1S 0x41
emilmont	1:46ce1e16c870	178	#define _DS1E 0x5A
emilmont	1:46ce1e16c870	179	#define _DS2S 0x61
emilmont	1:46ce1e16c870	180	#define _DS2E 0x7A
emilmont	1:46ce1e16c870	181	#define _DS3S 0x81
emilmont	1:46ce1e16c870	182	#define _DS3E 0xFE
emilmont	1:46ce1e16c870	183
emilmont	1:46ce1e16c870	184	#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
emilmont	1:46ce1e16c870	185	#define _DF1S 0x81
emilmont	1:46ce1e16c870	186	#define _DF1E 0xFE
emilmont	1:46ce1e16c870	187	#define _DS1S 0x40
emilmont	1:46ce1e16c870	188	#define _DS1E 0x7E
emilmont	1:46ce1e16c870	189	#define _DS2S 0xA1
emilmont	1:46ce1e16c870	190	#define _DS2E 0xFE
emilmont	1:46ce1e16c870	191
emilmont	1:46ce1e16c870	192	#elif _CODE_PAGE == 437 /* U.S. (OEM) */
emilmont	1:46ce1e16c870	193	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	198
emilmont	1:46ce1e16c870	199	#elif _CODE_PAGE == 720 /* Arabic (OEM) */
emilmont	1:46ce1e16c870	200	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	205
emilmont	1:46ce1e16c870	206	#elif _CODE_PAGE == 737 /* Greek (OEM) */
emilmont	1:46ce1e16c870	207	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	212
emilmont	1:46ce1e16c870	213	#elif _CODE_PAGE == 775 /* Baltic (OEM) */
emilmont	1:46ce1e16c870	214	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	219
emilmont	1:46ce1e16c870	220	#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
emilmont	1:46ce1e16c870	221	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	226
emilmont	1:46ce1e16c870	227	#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
emilmont	1:46ce1e16c870	228	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	233
emilmont	1:46ce1e16c870	234	#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
emilmont	1:46ce1e16c870	235	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	240
emilmont	1:46ce1e16c870	241	#elif _CODE_PAGE == 857 /* Turkish (OEM) */
emilmont	1:46ce1e16c870	242	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	247
emilmont	1:46ce1e16c870	248	#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
emilmont	1:46ce1e16c870	249	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	254
emilmont	1:46ce1e16c870	255	#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
emilmont	1:46ce1e16c870	256	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	261
emilmont	1:46ce1e16c870	262	#elif _CODE_PAGE == 866 /* Russian (OEM) */
emilmont	1:46ce1e16c870	263	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	268
emilmont	1:46ce1e16c870	269	#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
emilmont	1:46ce1e16c870	270	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	275
emilmont	1:46ce1e16c870	276	#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
emilmont	1:46ce1e16c870	277	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	282
emilmont	1:46ce1e16c870	283	#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
emilmont	1:46ce1e16c870	284	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	289
emilmont	1:46ce1e16c870	290	#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
emilmont	1:46ce1e16c870	291	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	296
emilmont	1:46ce1e16c870	297	#elif _CODE_PAGE == 1253 /* Greek (Windows) */
emilmont	1:46ce1e16c870	298	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	303
emilmont	1:46ce1e16c870	304	#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
emilmont	1:46ce1e16c870	305	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	310
emilmont	1:46ce1e16c870	311	#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
emilmont	1:46ce1e16c870	312	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	317
emilmont	1:46ce1e16c870	318	#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
emilmont	1:46ce1e16c870	319	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	324
emilmont	1:46ce1e16c870	325	#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
emilmont	1:46ce1e16c870	326	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	331
emilmont	1:46ce1e16c870	332	#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
emilmont	1:46ce1e16c870	333	#define _DF1S 0
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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, \
emilmont	1:46ce1e16c870	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}
emilmont	1:46ce1e16c870	338
emilmont	1:46ce1e16c870	339	#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
emilmont	1:46ce1e16c870	340	#if _USE_LFN
emilmont	1:46ce1e16c870	341	#error Cannot use LFN feature without valid code page.
emilmont	1:46ce1e16c870	342	#endif
emilmont	1:46ce1e16c870	343	#define _DF1S 0
emilmont	1:46ce1e16c870	344
emilmont	1:46ce1e16c870	345	#else
emilmont	1:46ce1e16c870	346	#error Unknown code page
emilmont	1:46ce1e16c870	347
emilmont	1:46ce1e16c870	348	#endif
emilmont	1:46ce1e16c870	349
emilmont	1:46ce1e16c870	350
emilmont	1:46ce1e16c870	351	/* Character code support macros */
emilmont	1:46ce1e16c870	352	#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
emilmont	1:46ce1e16c870	353	#define IsLower(c) (((c)>='a')&&((c)<='z'))
emilmont	1:46ce1e16c870	354	#define IsDigit(c) (((c)>='0')&&((c)<='9'))
emilmont	1:46ce1e16c870	355
emilmont	1:46ce1e16c870	356	#if _DF1S /* Code page is DBCS */
emilmont	1:46ce1e16c870	357
emilmont	1:46ce1e16c870	358	#ifdef _DF2S /* Two 1st byte areas */
emilmont	1:46ce1e16c870	359	#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) \|\| ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
emilmont	1:46ce1e16c870	360	#else /* One 1st byte area */
emilmont	1:46ce1e16c870	361	#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
emilmont	1:46ce1e16c870	362	#endif
emilmont	1:46ce1e16c870	363
emilmont	1:46ce1e16c870	364	#ifdef _DS3S /* Three 2nd byte areas */
emilmont	1:46ce1e16c870	365	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) \|\| ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
emilmont	1:46ce1e16c870	366	#else /* Two 2nd byte areas */
emilmont	1:46ce1e16c870	367	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
emilmont	1:46ce1e16c870	368	#endif
emilmont	1:46ce1e16c870	369
emilmont	1:46ce1e16c870	370	#else /* Code page is SBCS */
emilmont	1:46ce1e16c870	371
emilmont	1:46ce1e16c870	372	#define IsDBCS1(c) 0
emilmont	1:46ce1e16c870	373	#define IsDBCS2(c) 0
emilmont	1:46ce1e16c870	374
emilmont	1:46ce1e16c870	375	#endif /* _DF1S */
emilmont	1:46ce1e16c870	376
emilmont	1:46ce1e16c870	377
emilmont	1:46ce1e16c870	378	/* Name status flags */
emilmont	1:46ce1e16c870	379	#define NS 11 /* Index of name status byte in fn[] */
emilmont	1:46ce1e16c870	380	#define NS_LOSS 0x01 /* Out of 8.3 format */
emilmont	1:46ce1e16c870	381	#define NS_LFN 0x02 /* Force to create LFN entry */
emilmont	1:46ce1e16c870	382	#define NS_LAST 0x04 /* Last segment */
emilmont	1:46ce1e16c870	383	#define NS_BODY 0x08 /* Lower case flag (body) */
emilmont	1:46ce1e16c870	384	#define NS_EXT 0x10 /* Lower case flag (ext) */
emilmont	1:46ce1e16c870	385	#define NS_DOT 0x20 /* Dot entry */
emilmont	1:46ce1e16c870	386
emilmont	1:46ce1e16c870	387
emilmont	1:46ce1e16c870	388	/* FAT sub-type boundaries */
emilmont	1:46ce1e16c870	389	/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
emilmont	1:46ce1e16c870	390	#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
emilmont	1:46ce1e16c870	391	#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
emilmont	1:46ce1e16c870	392
emilmont	1:46ce1e16c870	393
emilmont	1:46ce1e16c870	394	/* FatFs refers the members in the FAT structures as byte array instead of
emilmont	1:46ce1e16c870	395	/ structure member because the structure is not binary compatible between
emilmont	1:46ce1e16c870	396	/ different platforms */
emilmont	1:46ce1e16c870	397
emilmont	1:46ce1e16c870	398	#define BS_jmpBoot 0 /* Jump instruction (3) */
emilmont	1:46ce1e16c870	399	#define BS_OEMName 3 /* OEM name (8) */
emilmont	1:46ce1e16c870	400	#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
emilmont	1:46ce1e16c870	401	#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
emilmont	1:46ce1e16c870	402	#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
emilmont	1:46ce1e16c870	403	#define BPB_NumFATs 16 /* Number of FAT copies (1) */
emilmont	1:46ce1e16c870	404	#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
emilmont	1:46ce1e16c870	405	#define BPB_TotSec16 19 /* Volume size [sector] (2) */
emilmont	1:46ce1e16c870	406	#define BPB_Media 21 /* Media descriptor (1) */
emilmont	1:46ce1e16c870	407	#define BPB_FATSz16 22 /* FAT size [sector] (2) */
emilmont	1:46ce1e16c870	408	#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
emilmont	1:46ce1e16c870	409	#define BPB_NumHeads 26 /* Number of heads (2) */
emilmont	1:46ce1e16c870	410	#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
emilmont	1:46ce1e16c870	411	#define BPB_TotSec32 32 /* Volume size [sector] (4) */
emilmont	1:46ce1e16c870	412	#define BS_DrvNum 36 /* Physical drive number (2) */
emilmont	1:46ce1e16c870	413	#define BS_BootSig 38 /* Extended boot signature (1) */
emilmont	1:46ce1e16c870	414	#define BS_VolID 39 /* Volume serial number (4) */
emilmont	1:46ce1e16c870	415	#define BS_VolLab 43 /* Volume label (8) */
emilmont	1:46ce1e16c870	416	#define BS_FilSysType 54 /* File system type (1) */
emilmont	1:46ce1e16c870	417	#define BPB_FATSz32 36 /* FAT size [sector] (4) */
emilmont	1:46ce1e16c870	418	#define BPB_ExtFlags 40 /* Extended flags (2) */
emilmont	1:46ce1e16c870	419	#define BPB_FSVer 42 /* File system version (2) */
emilmont	1:46ce1e16c870	420	#define BPB_RootClus 44 /* Root dir first cluster (4) */
emilmont	1:46ce1e16c870	421	#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
emilmont	1:46ce1e16c870	422	#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
emilmont	1:46ce1e16c870	423	#define BS_DrvNum32 64 /* Physical drive number (2) */
emilmont	1:46ce1e16c870	424	#define BS_BootSig32 66 /* Extended boot signature (1) */
emilmont	1:46ce1e16c870	425	#define BS_VolID32 67 /* Volume serial number (4) */
emilmont	1:46ce1e16c870	426	#define BS_VolLab32 71 /* Volume label (8) */
emilmont	1:46ce1e16c870	427	#define BS_FilSysType32 82 /* File system type (1) */
emilmont	1:46ce1e16c870	428	#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
emilmont	1:46ce1e16c870	429	#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
emilmont	1:46ce1e16c870	430	#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
emilmont	1:46ce1e16c870	431	#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
emilmont	1:46ce1e16c870	432	#define MBR_Table 446 /* MBR: Partition table offset (2) */
emilmont	1:46ce1e16c870	433	#define SZ_PTE 16 /* MBR: Size of a partition table entry */
emilmont	1:46ce1e16c870	434	#define BS_55AA 510 /* Boot sector signature (2) */
emilmont	1:46ce1e16c870	435
emilmont	1:46ce1e16c870	436	#define DIR_Name 0 /* Short file name (11) */
emilmont	1:46ce1e16c870	437	#define DIR_Attr 11 /* Attribute (1) */
emilmont	1:46ce1e16c870	438	#define DIR_NTres 12 /* NT flag (1) */
emilmont	1:46ce1e16c870	439	#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
emilmont	1:46ce1e16c870	440	#define DIR_CrtTime 14 /* Created time (2) */
emilmont	1:46ce1e16c870	441	#define DIR_CrtDate 16 /* Created date (2) */
emilmont	1:46ce1e16c870	442	#define DIR_LstAccDate 18 /* Last accessed date (2) */
emilmont	1:46ce1e16c870	443	#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
emilmont	1:46ce1e16c870	444	#define DIR_WrtTime 22 /* Modified time (2) */
emilmont	1:46ce1e16c870	445	#define DIR_WrtDate 24 /* Modified date (2) */
emilmont	1:46ce1e16c870	446	#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
emilmont	1:46ce1e16c870	447	#define DIR_FileSize 28 /* File size (4) */
emilmont	1:46ce1e16c870	448	#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
emilmont	1:46ce1e16c870	449	#define LDIR_Attr 11 /* LFN attribute (1) */
emilmont	1:46ce1e16c870	450	#define LDIR_Type 12 /* LFN type (1) */
emilmont	1:46ce1e16c870	451	#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
emilmont	1:46ce1e16c870	452	#define LDIR_FstClusLO 26 /* Filled by zero (0) */
emilmont	1:46ce1e16c870	453	#define SZ_DIR 32 /* Size of a directory entry */
emilmont	1:46ce1e16c870	454	#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
emilmont	1:46ce1e16c870	455	#define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
emilmont	1:46ce1e16c870	456	#define NDDE 0x05 /* Replacement of the character collides with DDE */
emilmont	1:46ce1e16c870	457
emilmont	1:46ce1e16c870	458
emilmont	1:46ce1e16c870	459	/------------------------------------------------------------/
emilmont	1:46ce1e16c870	460	/* Module private work area */
emilmont	1:46ce1e16c870	461	/------------------------------------------------------------/
emilmont	1:46ce1e16c870	462	/* Note that uninitialized variables with static duration are
emilmont	1:46ce1e16c870	463	/ zeroed/nulled at start-up. If not, the compiler or start-up
emilmont	1:46ce1e16c870	464	/ routine is out of ANSI-C standard.
emilmont	1:46ce1e16c870	465	*/
emilmont	1:46ce1e16c870	466
emilmont	1:46ce1e16c870	467	#if _VOLUMES
emilmont	1:46ce1e16c870	468	static
emilmont	1:46ce1e16c870	469	FATFS FatFs[_VOLUMES]; / Pointer to the file system objects (logical drives) */
emilmont	1:46ce1e16c870	470	#else
emilmont	1:46ce1e16c870	471	#error Number of volumes must not be 0.
emilmont	1:46ce1e16c870	472	#endif
emilmont	1:46ce1e16c870	473
emilmont	1:46ce1e16c870	474	static
emilmont	1:46ce1e16c870	475	WORD Fsid; /* File system mount ID */
emilmont	1:46ce1e16c870	476
emilmont	1:46ce1e16c870	477	#if _FS_RPATH
emilmont	1:46ce1e16c870	478	static
emilmont	1:46ce1e16c870	479	BYTE CurrVol; /* Current drive */
emilmont	1:46ce1e16c870	480	#endif
emilmont	1:46ce1e16c870	481
emilmont	1:46ce1e16c870	482	#if _FS_LOCK
emilmont	1:46ce1e16c870	483	static
emilmont	1:46ce1e16c870	484	FILESEM Files[_FS_LOCK]; /* File lock semaphores */
emilmont	1:46ce1e16c870	485	#endif
emilmont	1:46ce1e16c870	486
emilmont	1:46ce1e16c870	487	#if _USE_LFN == 0 /* No LFN feature */
emilmont	1:46ce1e16c870	488	#define DEF_NAMEBUF BYTE sfn[12]
emilmont	1:46ce1e16c870	489	#define INIT_BUF(dobj) (dobj).fn = sfn
emilmont	1:46ce1e16c870	490	#define FREE_BUF()
emilmont	1:46ce1e16c870	491
emilmont	1:46ce1e16c870	492	#elif _USE_LFN == 1 /* LFN feature with static working buffer */
emilmont	1:46ce1e16c870	493	static WCHAR LfnBuf[_MAX_LFN+1];
emilmont	1:46ce1e16c870	494	#define DEF_NAMEBUF BYTE sfn[12]
emilmont	1:46ce1e16c870	495	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
emilmont	1:46ce1e16c870	496	#define FREE_BUF()
emilmont	1:46ce1e16c870	497
emilmont	1:46ce1e16c870	498	#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
emilmont	1:46ce1e16c870	499	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
emilmont	1:46ce1e16c870	500	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
emilmont	1:46ce1e16c870	501	#define FREE_BUF()
emilmont	1:46ce1e16c870	502
emilmont	1:46ce1e16c870	503	#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
emilmont	1:46ce1e16c870	504	#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
emilmont	1:46ce1e16c870	505	#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
emilmont	1:46ce1e16c870	506	if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
emilmont	1:46ce1e16c870	507	(dobj).lfn = lfn; (dobj).fn = sfn; }
emilmont	1:46ce1e16c870	508	#define FREE_BUF() ff_memfree(lfn)
emilmont	1:46ce1e16c870	509
emilmont	1:46ce1e16c870	510	#else
emilmont	1:46ce1e16c870	511	#error Wrong LFN configuration.
emilmont	1:46ce1e16c870	512	#endif
emilmont	1:46ce1e16c870	513
emilmont	1:46ce1e16c870	514
emilmont	1:46ce1e16c870	515
emilmont	1:46ce1e16c870	516
emilmont	1:46ce1e16c870	517	/*--------------------------------------------------------------------------
emilmont	1:46ce1e16c870	518
emilmont	1:46ce1e16c870	519	Module Private Functions
emilmont	1:46ce1e16c870	520
emilmont	1:46ce1e16c870	521	---------------------------------------------------------------------------*/
emilmont	1:46ce1e16c870	522
emilmont	1:46ce1e16c870	523
emilmont	1:46ce1e16c870	524	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	525	/* String functions */
emilmont	1:46ce1e16c870	526	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	527
emilmont	1:46ce1e16c870	528	/* Copy memory to memory */
emilmont	1:46ce1e16c870	529	static
emilmont	1:46ce1e16c870	530	void mem_cpy (void* dst, const void* src, UINT cnt) {
emilmont	1:46ce1e16c870	531	BYTE d = (BYTE)dst;
emilmont	1:46ce1e16c870	532	const BYTE s = (const BYTE)src;
emilmont	1:46ce1e16c870	533
emilmont	1:46ce1e16c870	534	#if _WORD_ACCESS == 1
emilmont	1:46ce1e16c870	535	while (cnt >= sizeof (int)) {
emilmont	1:46ce1e16c870	536	(int)d = (int)s;
emilmont	1:46ce1e16c870	537	d += sizeof (int); s += sizeof (int);
emilmont	1:46ce1e16c870	538	cnt -= sizeof (int);
emilmont	1:46ce1e16c870	539	}
emilmont	1:46ce1e16c870	540	#endif
emilmont	1:46ce1e16c870	541	while (cnt--)
emilmont	1:46ce1e16c870	542	d++ = s++;
emilmont	1:46ce1e16c870	543	}
emilmont	1:46ce1e16c870	544
emilmont	1:46ce1e16c870	545	/* Fill memory */
emilmont	1:46ce1e16c870	546	static
emilmont	1:46ce1e16c870	547	void mem_set (void* dst, int val, UINT cnt) {
emilmont	1:46ce1e16c870	548	BYTE d = (BYTE)dst;
emilmont	1:46ce1e16c870	549
emilmont	1:46ce1e16c870	550	while (cnt--)
emilmont	1:46ce1e16c870	551	*d++ = (BYTE)val;
emilmont	1:46ce1e16c870	552	}
emilmont	1:46ce1e16c870	553
emilmont	1:46ce1e16c870	554	/* Compare memory to memory */
emilmont	1:46ce1e16c870	555	static
emilmont	1:46ce1e16c870	556	int mem_cmp (const void* dst, const void* src, UINT cnt) {
emilmont	1:46ce1e16c870	557	const BYTE d = (const BYTE )dst, s = (const BYTE )src;
emilmont	1:46ce1e16c870	558	int r = 0;
emilmont	1:46ce1e16c870	559
emilmont	1:46ce1e16c870	560	while (cnt-- && (r = d++ - s++) == 0) ;
emilmont	1:46ce1e16c870	561	return r;
emilmont	1:46ce1e16c870	562	}
emilmont	1:46ce1e16c870	563
emilmont	1:46ce1e16c870	564	/* Check if chr is contained in the string */
emilmont	1:46ce1e16c870	565	static
emilmont	1:46ce1e16c870	566	int chk_chr (const char* str, int chr) {
emilmont	1:46ce1e16c870	567	while (str && str != chr) str++;
emilmont	1:46ce1e16c870	568	return *str;
emilmont	1:46ce1e16c870	569	}
emilmont	1:46ce1e16c870	570
emilmont	1:46ce1e16c870	571
emilmont	1:46ce1e16c870	572
emilmont	1:46ce1e16c870	573	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	574	/* Request/Release grant to access the volume */
emilmont	1:46ce1e16c870	575	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	576	#if _FS_REENTRANT
emilmont	1:46ce1e16c870	577
emilmont	1:46ce1e16c870	578	static
emilmont	1:46ce1e16c870	579	int lock_fs (
emilmont	1:46ce1e16c870	580	FATFS fs / File system object */
emilmont	1:46ce1e16c870	581	)
emilmont	1:46ce1e16c870	582	{
emilmont	1:46ce1e16c870	583	return ff_req_grant(fs->sobj);
emilmont	1:46ce1e16c870	584	}
emilmont	1:46ce1e16c870	585
emilmont	1:46ce1e16c870	586
emilmont	1:46ce1e16c870	587	static
emilmont	1:46ce1e16c870	588	void unlock_fs (
emilmont	1:46ce1e16c870	589	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	590	FRESULT res /* Result code to be returned */
emilmont	1:46ce1e16c870	591	)
emilmont	1:46ce1e16c870	592	{
emilmont	1:46ce1e16c870	593	if (fs &&
emilmont	1:46ce1e16c870	594	res != FR_NOT_ENABLED &&
emilmont	1:46ce1e16c870	595	res != FR_INVALID_DRIVE &&
emilmont	1:46ce1e16c870	596	res != FR_INVALID_OBJECT &&
emilmont	1:46ce1e16c870	597	res != FR_TIMEOUT) {
emilmont	1:46ce1e16c870	598	ff_rel_grant(fs->sobj);
emilmont	1:46ce1e16c870	599	}
emilmont	1:46ce1e16c870	600	}
emilmont	1:46ce1e16c870	601	#endif
emilmont	1:46ce1e16c870	602
emilmont	1:46ce1e16c870	603
emilmont	1:46ce1e16c870	604
emilmont	1:46ce1e16c870	605	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	606	/* File lock control functions */
emilmont	1:46ce1e16c870	607	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	608	#if _FS_LOCK
emilmont	1:46ce1e16c870	609
emilmont	1:46ce1e16c870	610	static
emilmont	1:46ce1e16c870	611	FRESULT chk_lock ( /* Check if the file can be accessed */
emilmont	1:46ce1e16c870	612	DIR* dj, /* Directory object pointing the file to be checked */
emilmont	1:46ce1e16c870	613	int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
emilmont	1:46ce1e16c870	614	)
emilmont	1:46ce1e16c870	615	{
emilmont	1:46ce1e16c870	616	UINT i, be;
emilmont	1:46ce1e16c870	617
emilmont	1:46ce1e16c870	618	/* Search file semaphore table */
emilmont	1:46ce1e16c870	619	for (i = be = 0; i < _FS_LOCK; i++) {
emilmont	1:46ce1e16c870	620	if (Files[i].fs) { /* Existing entry */
emilmont	1:46ce1e16c870	621	if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
emilmont	1:46ce1e16c870	622	Files[i].clu == dj->sclust &&
emilmont	1:46ce1e16c870	623	Files[i].idx == dj->index) break;
emilmont	1:46ce1e16c870	624	} else { /* Blank entry */
emilmont	1:46ce1e16c870	625	be++;
emilmont	1:46ce1e16c870	626	}
emilmont	1:46ce1e16c870	627	}
emilmont	1:46ce1e16c870	628	if (i == _FS_LOCK) /* The file is not opened */
emilmont	1:46ce1e16c870	629	return (be \|\| acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
emilmont	1:46ce1e16c870	630
emilmont	1:46ce1e16c870	631	/* The file has been opened. Reject any open against writing file and all write mode open */
emilmont	1:46ce1e16c870	632	return (acc \|\| Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
emilmont	1:46ce1e16c870	633	}
emilmont	1:46ce1e16c870	634
emilmont	1:46ce1e16c870	635
emilmont	1:46ce1e16c870	636	static
emilmont	1:46ce1e16c870	637	int enq_lock (void) /* Check if an entry is available for a new file */
emilmont	1:46ce1e16c870	638	{
emilmont	1:46ce1e16c870	639	UINT i;
emilmont	1:46ce1e16c870	640
emilmont	1:46ce1e16c870	641	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
emilmont	1:46ce1e16c870	642	return (i == _FS_LOCK) ? 0 : 1;
emilmont	1:46ce1e16c870	643	}
emilmont	1:46ce1e16c870	644
emilmont	1:46ce1e16c870	645
emilmont	1:46ce1e16c870	646	static
emilmont	1:46ce1e16c870	647	UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
emilmont	1:46ce1e16c870	648	DIR* dj, /* Directory object pointing the file to register or increment */
emilmont	1:46ce1e16c870	649	int acc /* Desired access mode (0:Read, !0:Write) */
emilmont	1:46ce1e16c870	650	)
emilmont	1:46ce1e16c870	651	{
emilmont	1:46ce1e16c870	652	UINT i;
emilmont	1:46ce1e16c870	653
emilmont	1:46ce1e16c870	654
emilmont	1:46ce1e16c870	655	for (i = 0; i < _FS_LOCK; i++) { /* Find the file */
emilmont	1:46ce1e16c870	656	if (Files[i].fs == dj->fs &&
emilmont	1:46ce1e16c870	657	Files[i].clu == dj->sclust &&
emilmont	1:46ce1e16c870	658	Files[i].idx == dj->index) break;
emilmont	1:46ce1e16c870	659	}
emilmont	1:46ce1e16c870	660
emilmont	1:46ce1e16c870	661	if (i == _FS_LOCK) { /* Not opened. Register it as new. */
emilmont	1:46ce1e16c870	662	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
emilmont	1:46ce1e16c870	663	if (i == _FS_LOCK) return 0; /* No space to register (int err) */
emilmont	1:46ce1e16c870	664	Files[i].fs = dj->fs;
emilmont	1:46ce1e16c870	665	Files[i].clu = dj->sclust;
emilmont	1:46ce1e16c870	666	Files[i].idx = dj->index;
emilmont	1:46ce1e16c870	667	Files[i].ctr = 0;
emilmont	1:46ce1e16c870	668	}
emilmont	1:46ce1e16c870	669
emilmont	1:46ce1e16c870	670	if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
emilmont	1:46ce1e16c870	671
emilmont	1:46ce1e16c870	672	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
emilmont	1:46ce1e16c870	673
emilmont	1:46ce1e16c870	674	return i + 1;
emilmont	1:46ce1e16c870	675	}
emilmont	1:46ce1e16c870	676
emilmont	1:46ce1e16c870	677
emilmont	1:46ce1e16c870	678	static
emilmont	1:46ce1e16c870	679	FRESULT dec_lock ( /* Decrement file open counter */
emilmont	1:46ce1e16c870	680	UINT i /* Semaphore index */
emilmont	1:46ce1e16c870	681	)
emilmont	1:46ce1e16c870	682	{
emilmont	1:46ce1e16c870	683	WORD n;
emilmont	1:46ce1e16c870	684	FRESULT res;
emilmont	1:46ce1e16c870	685
emilmont	1:46ce1e16c870	686
emilmont	1:46ce1e16c870	687	if (--i < _FS_LOCK) {
emilmont	1:46ce1e16c870	688	n = Files[i].ctr;
emilmont	1:46ce1e16c870	689	if (n == 0x100) n = 0;
emilmont	1:46ce1e16c870	690	if (n) n--;
emilmont	1:46ce1e16c870	691	Files[i].ctr = n;
emilmont	1:46ce1e16c870	692	if (!n) Files[i].fs = 0;
emilmont	1:46ce1e16c870	693	res = FR_OK;
emilmont	1:46ce1e16c870	694	} else {
emilmont	1:46ce1e16c870	695	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	696	}
emilmont	1:46ce1e16c870	697	return res;
emilmont	1:46ce1e16c870	698	}
emilmont	1:46ce1e16c870	699
emilmont	1:46ce1e16c870	700
emilmont	1:46ce1e16c870	701	static
emilmont	1:46ce1e16c870	702	void clear_lock ( /* Clear lock entries of the volume */
emilmont	1:46ce1e16c870	703	FATFS *fs
emilmont	1:46ce1e16c870	704	)
emilmont	1:46ce1e16c870	705	{
emilmont	1:46ce1e16c870	706	UINT i;
emilmont	1:46ce1e16c870	707
emilmont	1:46ce1e16c870	708	for (i = 0; i < _FS_LOCK; i++) {
emilmont	1:46ce1e16c870	709	if (Files[i].fs == fs) Files[i].fs = 0;
emilmont	1:46ce1e16c870	710	}
emilmont	1:46ce1e16c870	711	}
emilmont	1:46ce1e16c870	712	#endif
emilmont	1:46ce1e16c870	713
emilmont	1:46ce1e16c870	714
emilmont	1:46ce1e16c870	715
emilmont	1:46ce1e16c870	716	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	717	/* Change window offset */
emilmont	1:46ce1e16c870	718	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	719
emilmont	1:46ce1e16c870	720	static
emilmont	1:46ce1e16c870	721	FRESULT move_window (
emilmont	1:46ce1e16c870	722	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	723	DWORD sector /* Sector number to make appearance in the fs->win[] */
emilmont	1:46ce1e16c870	724	) /* Move to zero only writes back dirty window */
emilmont	1:46ce1e16c870	725	{
emilmont	1:46ce1e16c870	726	DWORD wsect;
emilmont	1:46ce1e16c870	727
emilmont	1:46ce1e16c870	728
emilmont	1:46ce1e16c870	729	wsect = fs->winsect;
emilmont	1:46ce1e16c870	730	if (wsect != sector) { /* Changed current window */
emilmont	1:46ce1e16c870	731	#if !_FS_READONLY
emilmont	1:46ce1e16c870	732	if (fs->wflag) { /* Write back dirty window if needed */
emilmont	1:46ce1e16c870	733	if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	734	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	735	fs->wflag = 0;
emilmont	1:46ce1e16c870	736	if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
emilmont	1:46ce1e16c870	737	BYTE nf;
emilmont	1:46ce1e16c870	738	for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
emilmont	1:46ce1e16c870	739	wsect += fs->fsize;
emilmont	1:46ce1e16c870	740	disk_write(fs->drv, fs->win, wsect, 1);
emilmont	1:46ce1e16c870	741	}
emilmont	1:46ce1e16c870	742	}
emilmont	1:46ce1e16c870	743	}
emilmont	1:46ce1e16c870	744	#endif
emilmont	1:46ce1e16c870	745	if (sector) {
emilmont	1:46ce1e16c870	746	if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
emilmont	1:46ce1e16c870	747	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	748	fs->winsect = sector;
emilmont	1:46ce1e16c870	749	}
emilmont	1:46ce1e16c870	750	}
emilmont	1:46ce1e16c870	751
emilmont	1:46ce1e16c870	752	return FR_OK;
emilmont	1:46ce1e16c870	753	}
emilmont	1:46ce1e16c870	754
emilmont	1:46ce1e16c870	755
emilmont	1:46ce1e16c870	756
emilmont	1:46ce1e16c870	757
emilmont	1:46ce1e16c870	758	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	759	/* Clean-up cached data */
emilmont	1:46ce1e16c870	760	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	761	#if !_FS_READONLY
emilmont	1:46ce1e16c870	762	static
emilmont	1:46ce1e16c870	763	FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
emilmont	1:46ce1e16c870	764	FATFS fs / File system object */
emilmont	1:46ce1e16c870	765	)
emilmont	1:46ce1e16c870	766	{
emilmont	1:46ce1e16c870	767	FRESULT res;
emilmont	1:46ce1e16c870	768
emilmont	1:46ce1e16c870	769
emilmont	1:46ce1e16c870	770	res = move_window(fs, 0);
emilmont	1:46ce1e16c870	771	if (res == FR_OK) {
emilmont	1:46ce1e16c870	772	/* Update FSInfo sector if needed */
emilmont	1:46ce1e16c870	773	if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
emilmont	1:46ce1e16c870	774	fs->winsect = 0;
emilmont	1:46ce1e16c870	775	/* Create FSInfo structure */
emilmont	1:46ce1e16c870	776	mem_set(fs->win, 0, 512);
emilmont	1:46ce1e16c870	777	ST_WORD(fs->win+BS_55AA, 0xAA55);
emilmont	1:46ce1e16c870	778	ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
emilmont	1:46ce1e16c870	779	ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
emilmont	1:46ce1e16c870	780	ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
emilmont	1:46ce1e16c870	781	ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
emilmont	1:46ce1e16c870	782	/* Write it into the FSInfo sector */
emilmont	1:46ce1e16c870	783	disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
emilmont	1:46ce1e16c870	784	fs->fsi_flag = 0;
emilmont	1:46ce1e16c870	785	}
emilmont	1:46ce1e16c870	786	/* Make sure that no pending write process in the physical drive */
emilmont	1:46ce1e16c870	787	if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
emilmont	1:46ce1e16c870	788	res = FR_DISK_ERR;
emilmont	1:46ce1e16c870	789	}
emilmont	1:46ce1e16c870	790
emilmont	1:46ce1e16c870	791	return res;
emilmont	1:46ce1e16c870	792	}
emilmont	1:46ce1e16c870	793	#endif
emilmont	1:46ce1e16c870	794
emilmont	1:46ce1e16c870	795
emilmont	1:46ce1e16c870	796
emilmont	1:46ce1e16c870	797
emilmont	1:46ce1e16c870	798	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	799	/* Get sector# from cluster# */
emilmont	1:46ce1e16c870	800	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	801
emilmont	1:46ce1e16c870	802
emilmont	1:46ce1e16c870	803	DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
emilmont	1:46ce1e16c870	804	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	805	DWORD clst /* Cluster# to be converted */
emilmont	1:46ce1e16c870	806	)
emilmont	1:46ce1e16c870	807	{
emilmont	1:46ce1e16c870	808	clst -= 2;
emilmont	1:46ce1e16c870	809	if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
emilmont	1:46ce1e16c870	810	return clst * fs->csize + fs->database;
emilmont	1:46ce1e16c870	811	}
emilmont	1:46ce1e16c870	812
emilmont	1:46ce1e16c870	813
emilmont	1:46ce1e16c870	814
emilmont	1:46ce1e16c870	815
emilmont	1:46ce1e16c870	816	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	817	/* FAT access - Read value of a FAT entry */
emilmont	1:46ce1e16c870	818	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	819
emilmont	1:46ce1e16c870	820
emilmont	1:46ce1e16c870	821	DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
emilmont	1:46ce1e16c870	822	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	823	DWORD clst /* Cluster# to get the link information */
emilmont	1:46ce1e16c870	824	)
emilmont	1:46ce1e16c870	825	{
emilmont	1:46ce1e16c870	826	UINT wc, bc;
emilmont	1:46ce1e16c870	827	BYTE *p;
emilmont	1:46ce1e16c870	828
emilmont	1:46ce1e16c870	829
emilmont	1:46ce1e16c870	830	if (clst < 2 \|\| clst >= fs->n_fatent) /* Check range */
emilmont	1:46ce1e16c870	831	return 1;
emilmont	1:46ce1e16c870	832
emilmont	1:46ce1e16c870	833	switch (fs->fs_type) {
emilmont	1:46ce1e16c870	834	case FS_FAT12 :
emilmont	1:46ce1e16c870	835	bc = (UINT)clst; bc += bc / 2;
emilmont	1:46ce1e16c870	836	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
emilmont	1:46ce1e16c870	837	wc = fs->win[bc % SS(fs)]; bc++;
emilmont	1:46ce1e16c870	838	if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
emilmont	1:46ce1e16c870	839	wc \|= fs->win[bc % SS(fs)] << 8;
emilmont	1:46ce1e16c870	840	return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
emilmont	1:46ce1e16c870	841
emilmont	1:46ce1e16c870	842	case FS_FAT16 :
emilmont	1:46ce1e16c870	843	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
emilmont	1:46ce1e16c870	844	p = &fs->win[clst * 2 % SS(fs)];
emilmont	1:46ce1e16c870	845	return LD_WORD(p);
emilmont	1:46ce1e16c870	846
emilmont	1:46ce1e16c870	847	case FS_FAT32 :
emilmont	1:46ce1e16c870	848	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
emilmont	1:46ce1e16c870	849	p = &fs->win[clst * 4 % SS(fs)];
emilmont	1:46ce1e16c870	850	return LD_DWORD(p) & 0x0FFFFFFF;
emilmont	1:46ce1e16c870	851	}
emilmont	1:46ce1e16c870	852
emilmont	1:46ce1e16c870	853	return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
emilmont	1:46ce1e16c870	854	}
emilmont	1:46ce1e16c870	855
emilmont	1:46ce1e16c870	856
emilmont	1:46ce1e16c870	857
emilmont	1:46ce1e16c870	858
emilmont	1:46ce1e16c870	859	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	860	/* FAT access - Change value of a FAT entry */
emilmont	1:46ce1e16c870	861	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	862	#if !_FS_READONLY
emilmont	1:46ce1e16c870	863
emilmont	1:46ce1e16c870	864	FRESULT put_fat (
emilmont	1:46ce1e16c870	865	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	866	DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
emilmont	1:46ce1e16c870	867	DWORD val /* New value to mark the cluster */
emilmont	1:46ce1e16c870	868	)
emilmont	1:46ce1e16c870	869	{
emilmont	1:46ce1e16c870	870	UINT bc;
emilmont	1:46ce1e16c870	871	BYTE *p;
emilmont	1:46ce1e16c870	872	FRESULT res;
emilmont	1:46ce1e16c870	873
emilmont	1:46ce1e16c870	874
emilmont	1:46ce1e16c870	875	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
emilmont	1:46ce1e16c870	876	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	877
emilmont	1:46ce1e16c870	878	} else {
emilmont	1:46ce1e16c870	879	switch (fs->fs_type) {
emilmont	1:46ce1e16c870	880	case FS_FAT12 :
emilmont	1:46ce1e16c870	881	bc = (UINT)clst; bc += bc / 2;
emilmont	1:46ce1e16c870	882	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
emilmont	1:46ce1e16c870	883	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	884	p = &fs->win[bc % SS(fs)];
emilmont	1:46ce1e16c870	885	p = (clst & 1) ? ((p & 0x0F) \| ((BYTE)val << 4)) : (BYTE)val;
emilmont	1:46ce1e16c870	886	bc++;
emilmont	1:46ce1e16c870	887	fs->wflag = 1;
emilmont	1:46ce1e16c870	888	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
emilmont	1:46ce1e16c870	889	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	890	p = &fs->win[bc % SS(fs)];
emilmont	1:46ce1e16c870	891	p = (clst & 1) ? (BYTE)(val >> 4) : ((p & 0xF0) \| ((BYTE)(val >> 8) & 0x0F));
emilmont	1:46ce1e16c870	892	break;
emilmont	1:46ce1e16c870	893
emilmont	1:46ce1e16c870	894	case FS_FAT16 :
emilmont	1:46ce1e16c870	895	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
emilmont	1:46ce1e16c870	896	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	897	p = &fs->win[clst * 2 % SS(fs)];
emilmont	1:46ce1e16c870	898	ST_WORD(p, (WORD)val);
emilmont	1:46ce1e16c870	899	break;
emilmont	1:46ce1e16c870	900
emilmont	1:46ce1e16c870	901	case FS_FAT32 :
emilmont	1:46ce1e16c870	902	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
emilmont	1:46ce1e16c870	903	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	904	p = &fs->win[clst * 4 % SS(fs)];
emilmont	1:46ce1e16c870	905	val \|= LD_DWORD(p) & 0xF0000000;
emilmont	1:46ce1e16c870	906	ST_DWORD(p, val);
emilmont	1:46ce1e16c870	907	break;
emilmont	1:46ce1e16c870	908
emilmont	1:46ce1e16c870	909	default :
emilmont	1:46ce1e16c870	910	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	911	}
emilmont	1:46ce1e16c870	912	fs->wflag = 1;
emilmont	1:46ce1e16c870	913	}
emilmont	1:46ce1e16c870	914
emilmont	1:46ce1e16c870	915	return res;
emilmont	1:46ce1e16c870	916	}
emilmont	1:46ce1e16c870	917	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	918
emilmont	1:46ce1e16c870	919
emilmont	1:46ce1e16c870	920
emilmont	1:46ce1e16c870	921
emilmont	1:46ce1e16c870	922	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	923	/* FAT handling - Remove a cluster chain */
emilmont	1:46ce1e16c870	924	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	925	#if !_FS_READONLY
emilmont	1:46ce1e16c870	926	static
emilmont	1:46ce1e16c870	927	FRESULT remove_chain (
emilmont	1:46ce1e16c870	928	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	929	DWORD clst /* Cluster# to remove a chain from */
emilmont	1:46ce1e16c870	930	)
emilmont	1:46ce1e16c870	931	{
emilmont	1:46ce1e16c870	932	FRESULT res;
emilmont	1:46ce1e16c870	933	DWORD nxt;
emilmont	1:46ce1e16c870	934	#if _USE_ERASE
emilmont	1:46ce1e16c870	935	DWORD scl = clst, ecl = clst, rt[2];
emilmont	1:46ce1e16c870	936	#endif
emilmont	1:46ce1e16c870	937
emilmont	1:46ce1e16c870	938	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check range */
emilmont	1:46ce1e16c870	939	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	940
emilmont	1:46ce1e16c870	941	} else {
emilmont	1:46ce1e16c870	942	res = FR_OK;
emilmont	1:46ce1e16c870	943	while (clst < fs->n_fatent) { /* Not a last link? */
emilmont	1:46ce1e16c870	944	nxt = get_fat(fs, clst); /* Get cluster status */
emilmont	1:46ce1e16c870	945	if (nxt == 0) break; /* Empty cluster? */
emilmont	1:46ce1e16c870	946	if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
emilmont	1:46ce1e16c870	947	if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
emilmont	1:46ce1e16c870	948	res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
emilmont	1:46ce1e16c870	949	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	950	if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
emilmont	1:46ce1e16c870	951	fs->free_clust++;
emilmont	1:46ce1e16c870	952	fs->fsi_flag = 1;
emilmont	1:46ce1e16c870	953	}
emilmont	1:46ce1e16c870	954	#if _USE_ERASE
emilmont	1:46ce1e16c870	955	if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
emilmont	1:46ce1e16c870	956	ecl = nxt;
emilmont	1:46ce1e16c870	957	} else { /* End of contiguous clusters */
emilmont	1:46ce1e16c870	958	rt[0] = clust2sect(fs, scl); /* Start sector */
emilmont	1:46ce1e16c870	959	rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
emilmont	1:46ce1e16c870	960	disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, rt); /* Erase the block */
emilmont	1:46ce1e16c870	961	scl = ecl = nxt;
emilmont	1:46ce1e16c870	962	}
emilmont	1:46ce1e16c870	963	#endif
emilmont	1:46ce1e16c870	964	clst = nxt; /* Next cluster */
emilmont	1:46ce1e16c870	965	}
emilmont	1:46ce1e16c870	966	}
emilmont	1:46ce1e16c870	967
emilmont	1:46ce1e16c870	968	return res;
emilmont	1:46ce1e16c870	969	}
emilmont	1:46ce1e16c870	970	#endif
emilmont	1:46ce1e16c870	971
emilmont	1:46ce1e16c870	972
emilmont	1:46ce1e16c870	973
emilmont	1:46ce1e16c870	974
emilmont	1:46ce1e16c870	975	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	976	/* FAT handling - Stretch or Create a cluster chain */
emilmont	1:46ce1e16c870	977	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	978	#if !_FS_READONLY
emilmont	1:46ce1e16c870	979	static
emilmont	1:46ce1e16c870	980	DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
emilmont	1:46ce1e16c870	981	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	982	DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
emilmont	1:46ce1e16c870	983	)
emilmont	1:46ce1e16c870	984	{
emilmont	1:46ce1e16c870	985	DWORD cs, ncl, scl;
emilmont	1:46ce1e16c870	986	FRESULT res;
emilmont	1:46ce1e16c870	987
emilmont	1:46ce1e16c870	988
emilmont	1:46ce1e16c870	989	if (clst == 0) { /* Create a new chain */
emilmont	1:46ce1e16c870	990	scl = fs->last_clust; /* Get suggested start point */
emilmont	1:46ce1e16c870	991	if (!scl \|\| scl >= fs->n_fatent) scl = 1;
emilmont	1:46ce1e16c870	992	}
emilmont	1:46ce1e16c870	993	else { /* Stretch the current chain */
emilmont	1:46ce1e16c870	994	cs = get_fat(fs, clst); /* Check the cluster status */
emilmont	1:46ce1e16c870	995	if (cs < 2) return 1; /* It is an invalid cluster */
emilmont	1:46ce1e16c870	996	if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
emilmont	1:46ce1e16c870	997	scl = clst;
emilmont	1:46ce1e16c870	998	}
emilmont	1:46ce1e16c870	999
emilmont	1:46ce1e16c870	1000	ncl = scl; /* Start cluster */
emilmont	1:46ce1e16c870	1001	for (;;) {
emilmont	1:46ce1e16c870	1002	ncl++; /* Next cluster */
emilmont	1:46ce1e16c870	1003	if (ncl >= fs->n_fatent) { /* Wrap around */
emilmont	1:46ce1e16c870	1004	ncl = 2;
emilmont	1:46ce1e16c870	1005	if (ncl > scl) return 0; /* No free cluster */
emilmont	1:46ce1e16c870	1006	}
emilmont	1:46ce1e16c870	1007	cs = get_fat(fs, ncl); /* Get the cluster status */
emilmont	1:46ce1e16c870	1008	if (cs == 0) break; /* Found a free cluster */
emilmont	1:46ce1e16c870	1009	if (cs == 0xFFFFFFFF \|\| cs == 1)/* An error occurred */
emilmont	1:46ce1e16c870	1010	return cs;
emilmont	1:46ce1e16c870	1011	if (ncl == scl) return 0; /* No free cluster */
emilmont	1:46ce1e16c870	1012	}
emilmont	1:46ce1e16c870	1013
emilmont	1:46ce1e16c870	1014	res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
emilmont	1:46ce1e16c870	1015	if (res == FR_OK && clst != 0) {
emilmont	1:46ce1e16c870	1016	res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
emilmont	1:46ce1e16c870	1017	}
emilmont	1:46ce1e16c870	1018	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1019	fs->last_clust = ncl; /* Update FSINFO */
emilmont	1:46ce1e16c870	1020	if (fs->free_clust != 0xFFFFFFFF) {
emilmont	1:46ce1e16c870	1021	fs->free_clust--;
emilmont	1:46ce1e16c870	1022	fs->fsi_flag = 1;
emilmont	1:46ce1e16c870	1023	}
emilmont	1:46ce1e16c870	1024	} else {
emilmont	1:46ce1e16c870	1025	ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
emilmont	1:46ce1e16c870	1026	}
emilmont	1:46ce1e16c870	1027
emilmont	1:46ce1e16c870	1028	return ncl; /* Return new cluster number or error code */
emilmont	1:46ce1e16c870	1029	}
emilmont	1:46ce1e16c870	1030	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	1031
emilmont	1:46ce1e16c870	1032
emilmont	1:46ce1e16c870	1033
emilmont	1:46ce1e16c870	1034	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1035	/* FAT handling - Convert offset into cluster with link map table */
emilmont	1:46ce1e16c870	1036	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1037
emilmont	1:46ce1e16c870	1038	#if _USE_FASTSEEK
emilmont	1:46ce1e16c870	1039	static
emilmont	1:46ce1e16c870	1040	DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
emilmont	1:46ce1e16c870	1041	FIL* fp, /* Pointer to the file object */
emilmont	1:46ce1e16c870	1042	DWORD ofs /* File offset to be converted to cluster# */
emilmont	1:46ce1e16c870	1043	)
emilmont	1:46ce1e16c870	1044	{
emilmont	1:46ce1e16c870	1045	DWORD cl, ncl, *tbl;
emilmont	1:46ce1e16c870	1046
emilmont	1:46ce1e16c870	1047
emilmont	1:46ce1e16c870	1048	tbl = fp->cltbl + 1; /* Top of CLMT */
emilmont	1:46ce1e16c870	1049	cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
emilmont	1:46ce1e16c870	1050	for (;;) {
emilmont	1:46ce1e16c870	1051	ncl = tbl++; / Number of cluters in the fragment */
emilmont	1:46ce1e16c870	1052	if (!ncl) return 0; /* End of table? (error) */
emilmont	1:46ce1e16c870	1053	if (cl < ncl) break; /* In this fragment? */
emilmont	1:46ce1e16c870	1054	cl -= ncl; tbl++; /* Next fragment */
emilmont	1:46ce1e16c870	1055	}
emilmont	1:46ce1e16c870	1056	return cl + tbl; / Return the cluster number */
emilmont	1:46ce1e16c870	1057	}
emilmont	1:46ce1e16c870	1058	#endif /* _USE_FASTSEEK */
emilmont	1:46ce1e16c870	1059
emilmont	1:46ce1e16c870	1060
emilmont	1:46ce1e16c870	1061
emilmont	1:46ce1e16c870	1062	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1063	/* Directory handling - Set directory index */
emilmont	1:46ce1e16c870	1064	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1065
emilmont	1:46ce1e16c870	1066	static
emilmont	1:46ce1e16c870	1067	FRESULT dir_sdi (
emilmont	1:46ce1e16c870	1068	FATFS_DIR dj, / Pointer to directory object */
emilmont	1:46ce1e16c870	1069	WORD idx /* Index of directory table */
emilmont	1:46ce1e16c870	1070	)
emilmont	1:46ce1e16c870	1071	{
emilmont	1:46ce1e16c870	1072	DWORD clst;
emilmont	1:46ce1e16c870	1073	WORD ic;
emilmont	1:46ce1e16c870	1074
emilmont	1:46ce1e16c870	1075
emilmont	1:46ce1e16c870	1076	dj->index = idx;
emilmont	1:46ce1e16c870	1077	clst = dj->sclust;
emilmont	1:46ce1e16c870	1078	if (clst == 1 \|\| clst >= dj->fs->n_fatent) /* Check start cluster range */
emilmont	1:46ce1e16c870	1079	return FR_INT_ERR;
emilmont	1:46ce1e16c870	1080	if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
emilmont	1:46ce1e16c870	1081	clst = dj->fs->dirbase;
emilmont	1:46ce1e16c870	1082
emilmont	1:46ce1e16c870	1083	if (clst == 0) { /* Static table (root-dir in FAT12/16) */
emilmont	1:46ce1e16c870	1084	dj->clust = clst;
emilmont	1:46ce1e16c870	1085	if (idx >= dj->fs->n_rootdir) /* Index is out of range */
emilmont	1:46ce1e16c870	1086	return FR_INT_ERR;
emilmont	1:46ce1e16c870	1087	dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
emilmont	1:46ce1e16c870	1088	}
emilmont	1:46ce1e16c870	1089	else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
emilmont	1:46ce1e16c870	1090	ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
emilmont	1:46ce1e16c870	1091	while (idx >= ic) { /* Follow cluster chain */
emilmont	1:46ce1e16c870	1092	clst = get_fat(dj->fs, clst); /* Get next cluster */
emilmont	1:46ce1e16c870	1093	if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
emilmont	1:46ce1e16c870	1094	if (clst < 2 \|\| clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
emilmont	1:46ce1e16c870	1095	return FR_INT_ERR;
emilmont	1:46ce1e16c870	1096	idx -= ic;
emilmont	1:46ce1e16c870	1097	}
emilmont	1:46ce1e16c870	1098	dj->clust = clst;
emilmont	1:46ce1e16c870	1099	dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
emilmont	1:46ce1e16c870	1100	}
emilmont	1:46ce1e16c870	1101
emilmont	1:46ce1e16c870	1102	dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
emilmont	1:46ce1e16c870	1103
emilmont	1:46ce1e16c870	1104	return FR_OK; /* Seek succeeded */
emilmont	1:46ce1e16c870	1105	}
emilmont	1:46ce1e16c870	1106
emilmont	1:46ce1e16c870	1107
emilmont	1:46ce1e16c870	1108
emilmont	1:46ce1e16c870	1109
emilmont	1:46ce1e16c870	1110	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1111	/* Directory handling - Move directory table index next */
emilmont	1:46ce1e16c870	1112	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1113
emilmont	1:46ce1e16c870	1114	static
emilmont	1:46ce1e16c870	1115	FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
emilmont	1:46ce1e16c870	1116	FATFS_DIR dj, / Pointer to directory object */
emilmont	1:46ce1e16c870	1117	int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
emilmont	1:46ce1e16c870	1118	)
emilmont	1:46ce1e16c870	1119	{
emilmont	1:46ce1e16c870	1120	DWORD clst;
emilmont	1:46ce1e16c870	1121	WORD i;
emilmont	1:46ce1e16c870	1122
emilmont	1:46ce1e16c870	1123
emilmont	1:46ce1e16c870	1124	stretch = stretch; /* To suppress warning on read-only cfg. */
emilmont	1:46ce1e16c870	1125	i = dj->index + 1;
emilmont	1:46ce1e16c870	1126	if (!i \|\| !dj->sect) /* Report EOT when index has reached 65535 */
emilmont	1:46ce1e16c870	1127	return FR_NO_FILE;
emilmont	1:46ce1e16c870	1128
emilmont	1:46ce1e16c870	1129	if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
emilmont	1:46ce1e16c870	1130	dj->sect++; /* Next sector */
emilmont	1:46ce1e16c870	1131
emilmont	1:46ce1e16c870	1132	if (dj->clust == 0) { /* Static table */
emilmont	1:46ce1e16c870	1133	if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
emilmont	1:46ce1e16c870	1134	return FR_NO_FILE;
emilmont	1:46ce1e16c870	1135	}
emilmont	1:46ce1e16c870	1136	else { /* Dynamic table */
emilmont	1:46ce1e16c870	1137	if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
emilmont	1:46ce1e16c870	1138	clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
emilmont	1:46ce1e16c870	1139	if (clst <= 1) return FR_INT_ERR;
emilmont	1:46ce1e16c870	1140	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	1141	if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
emilmont	1:46ce1e16c870	1142	#if !_FS_READONLY
emilmont	1:46ce1e16c870	1143	BYTE c;
emilmont	1:46ce1e16c870	1144	if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
emilmont	1:46ce1e16c870	1145	clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
emilmont	1:46ce1e16c870	1146	if (clst == 0) return FR_DENIED; /* No free cluster */
emilmont	1:46ce1e16c870	1147	if (clst == 1) return FR_INT_ERR;
emilmont	1:46ce1e16c870	1148	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	1149	/* Clean-up stretched table */
emilmont	1:46ce1e16c870	1150	if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
emilmont	1:46ce1e16c870	1151	mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
emilmont	1:46ce1e16c870	1152	dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
emilmont	1:46ce1e16c870	1153	for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
emilmont	1:46ce1e16c870	1154	dj->fs->wflag = 1;
emilmont	1:46ce1e16c870	1155	if (move_window(dj->fs, 0)) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	1156	dj->fs->winsect++;
emilmont	1:46ce1e16c870	1157	}
emilmont	1:46ce1e16c870	1158	dj->fs->winsect -= c; /* Rewind window address */
emilmont	1:46ce1e16c870	1159	#else
emilmont	1:46ce1e16c870	1160	return FR_NO_FILE; /* Report EOT */
emilmont	1:46ce1e16c870	1161	#endif
emilmont	1:46ce1e16c870	1162	}
emilmont	1:46ce1e16c870	1163	dj->clust = clst; /* Initialize data for new cluster */
emilmont	1:46ce1e16c870	1164	dj->sect = clust2sect(dj->fs, clst);
emilmont	1:46ce1e16c870	1165	}
emilmont	1:46ce1e16c870	1166	}
emilmont	1:46ce1e16c870	1167	}
emilmont	1:46ce1e16c870	1168
emilmont	1:46ce1e16c870	1169	dj->index = i;
emilmont	1:46ce1e16c870	1170	dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
emilmont	1:46ce1e16c870	1171
emilmont	1:46ce1e16c870	1172	return FR_OK;
emilmont	1:46ce1e16c870	1173	}
emilmont	1:46ce1e16c870	1174
emilmont	1:46ce1e16c870	1175
emilmont	1:46ce1e16c870	1176
emilmont	1:46ce1e16c870	1177
emilmont	1:46ce1e16c870	1178	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1179	/* Directory handling - Load/Store start cluster number */
emilmont	1:46ce1e16c870	1180	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1181
emilmont	1:46ce1e16c870	1182	static
emilmont	1:46ce1e16c870	1183	DWORD ld_clust (
emilmont	1:46ce1e16c870	1184	FATFS fs, / Pointer to the fs object */
emilmont	1:46ce1e16c870	1185	BYTE dir / Pointer to the directory entry */
emilmont	1:46ce1e16c870	1186	)
emilmont	1:46ce1e16c870	1187	{
emilmont	1:46ce1e16c870	1188	DWORD cl;
emilmont	1:46ce1e16c870	1189
emilmont	1:46ce1e16c870	1190	cl = LD_WORD(dir+DIR_FstClusLO);
emilmont	1:46ce1e16c870	1191	if (fs->fs_type == FS_FAT32)
emilmont	1:46ce1e16c870	1192	cl \|= (DWORD)LD_WORD(dir+DIR_FstClusHI) << 16;
emilmont	1:46ce1e16c870	1193
emilmont	1:46ce1e16c870	1194	return cl;
emilmont	1:46ce1e16c870	1195	}
emilmont	1:46ce1e16c870	1196
emilmont	1:46ce1e16c870	1197
emilmont	1:46ce1e16c870	1198	#if !_FS_READONLY
emilmont	1:46ce1e16c870	1199	static
emilmont	1:46ce1e16c870	1200	void st_clust (
emilmont	1:46ce1e16c870	1201	BYTE dir, / Pointer to the directory entry */
emilmont	1:46ce1e16c870	1202	DWORD cl /* Value to be set */
emilmont	1:46ce1e16c870	1203	)
emilmont	1:46ce1e16c870	1204	{
emilmont	1:46ce1e16c870	1205	ST_WORD(dir+DIR_FstClusLO, cl);
emilmont	1:46ce1e16c870	1206	ST_WORD(dir+DIR_FstClusHI, cl >> 16);
emilmont	1:46ce1e16c870	1207	}
emilmont	1:46ce1e16c870	1208	#endif
emilmont	1:46ce1e16c870	1209
emilmont	1:46ce1e16c870	1210
emilmont	1:46ce1e16c870	1211
emilmont	1:46ce1e16c870	1212	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1213	/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
emilmont	1:46ce1e16c870	1214	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1215	#if _USE_LFN
emilmont	1:46ce1e16c870	1216	static
emilmont	1:46ce1e16c870	1217	const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
emilmont	1:46ce1e16c870	1218
emilmont	1:46ce1e16c870	1219
emilmont	1:46ce1e16c870	1220	static
emilmont	1:46ce1e16c870	1221	int cmp_lfn ( /* 1:Matched, 0:Not matched */
emilmont	1:46ce1e16c870	1222	WCHAR lfnbuf, / Pointer to the LFN to be compared */
emilmont	1:46ce1e16c870	1223	BYTE dir / Pointer to the directory entry containing a part of LFN */
emilmont	1:46ce1e16c870	1224	)
emilmont	1:46ce1e16c870	1225	{
emilmont	1:46ce1e16c870	1226	UINT i, s;
emilmont	1:46ce1e16c870	1227	WCHAR wc, uc;
emilmont	1:46ce1e16c870	1228
emilmont	1:46ce1e16c870	1229
emilmont	1:46ce1e16c870	1230	i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
emilmont	1:46ce1e16c870	1231	s = 0; wc = 1;
emilmont	1:46ce1e16c870	1232	do {
emilmont	1:46ce1e16c870	1233	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
emilmont	1:46ce1e16c870	1234	if (wc) { /* Last char has not been processed */
emilmont	1:46ce1e16c870	1235	wc = ff_wtoupper(uc); /* Convert it to upper case */
emilmont	1:46ce1e16c870	1236	if (i >= _MAX_LFN \|\| wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
emilmont	1:46ce1e16c870	1237	return 0; /* Not matched */
emilmont	1:46ce1e16c870	1238	} else {
emilmont	1:46ce1e16c870	1239	if (uc != 0xFFFF) return 0; /* Check filler */
emilmont	1:46ce1e16c870	1240	}
emilmont	1:46ce1e16c870	1241	} while (++s < 13); /* Repeat until all chars in the entry are checked */
emilmont	1:46ce1e16c870	1242
emilmont	1:46ce1e16c870	1243	if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
emilmont	1:46ce1e16c870	1244	return 0;
emilmont	1:46ce1e16c870	1245
emilmont	1:46ce1e16c870	1246	return 1; /* The part of LFN matched */
emilmont	1:46ce1e16c870	1247	}
emilmont	1:46ce1e16c870	1248
emilmont	1:46ce1e16c870	1249
emilmont	1:46ce1e16c870	1250
emilmont	1:46ce1e16c870	1251	static
emilmont	1:46ce1e16c870	1252	int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
emilmont	1:46ce1e16c870	1253	WCHAR lfnbuf, / Pointer to the Unicode-LFN buffer */
emilmont	1:46ce1e16c870	1254	BYTE dir / Pointer to the directory entry */
emilmont	1:46ce1e16c870	1255	)
emilmont	1:46ce1e16c870	1256	{
emilmont	1:46ce1e16c870	1257	UINT i, s;
emilmont	1:46ce1e16c870	1258	WCHAR wc, uc;
emilmont	1:46ce1e16c870	1259
emilmont	1:46ce1e16c870	1260
emilmont	1:46ce1e16c870	1261	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
emilmont	1:46ce1e16c870	1262
emilmont	1:46ce1e16c870	1263	s = 0; wc = 1;
emilmont	1:46ce1e16c870	1264	do {
emilmont	1:46ce1e16c870	1265	uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
emilmont	1:46ce1e16c870	1266	if (wc) { /* Last char has not been processed */
emilmont	1:46ce1e16c870	1267	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
emilmont	1:46ce1e16c870	1268	lfnbuf[i++] = wc = uc; /* Store it */
emilmont	1:46ce1e16c870	1269	} else {
emilmont	1:46ce1e16c870	1270	if (uc != 0xFFFF) return 0; /* Check filler */
emilmont	1:46ce1e16c870	1271	}
emilmont	1:46ce1e16c870	1272	} while (++s < 13); /* Read all character in the entry */
emilmont	1:46ce1e16c870	1273
emilmont	1:46ce1e16c870	1274	if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
emilmont	1:46ce1e16c870	1275	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
emilmont	1:46ce1e16c870	1276	lfnbuf[i] = 0;
emilmont	1:46ce1e16c870	1277	}
emilmont	1:46ce1e16c870	1278
emilmont	1:46ce1e16c870	1279	return 1;
emilmont	1:46ce1e16c870	1280	}
emilmont	1:46ce1e16c870	1281
emilmont	1:46ce1e16c870	1282
emilmont	1:46ce1e16c870	1283	#if !_FS_READONLY
emilmont	1:46ce1e16c870	1284	static
emilmont	1:46ce1e16c870	1285	void fit_lfn (
emilmont	1:46ce1e16c870	1286	const WCHAR lfnbuf, / Pointer to the LFN buffer */
emilmont	1:46ce1e16c870	1287	BYTE dir, / Pointer to the directory entry */
emilmont	1:46ce1e16c870	1288	BYTE ord, /* LFN order (1-20) */
emilmont	1:46ce1e16c870	1289	BYTE sum /* SFN sum */
emilmont	1:46ce1e16c870	1290	)
emilmont	1:46ce1e16c870	1291	{
emilmont	1:46ce1e16c870	1292	UINT i, s;
emilmont	1:46ce1e16c870	1293	WCHAR wc;
emilmont	1:46ce1e16c870	1294
emilmont	1:46ce1e16c870	1295
emilmont	1:46ce1e16c870	1296	dir[LDIR_Chksum] = sum; /* Set check sum */
emilmont	1:46ce1e16c870	1297	dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
emilmont	1:46ce1e16c870	1298	dir[LDIR_Type] = 0;
emilmont	1:46ce1e16c870	1299	ST_WORD(dir+LDIR_FstClusLO, 0);
emilmont	1:46ce1e16c870	1300
emilmont	1:46ce1e16c870	1301	i = (ord - 1) * 13; /* Get offset in the LFN buffer */
emilmont	1:46ce1e16c870	1302	s = wc = 0;
emilmont	1:46ce1e16c870	1303	do {
emilmont	1:46ce1e16c870	1304	if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
emilmont	1:46ce1e16c870	1305	ST_WORD(dir+LfnOfs[s], wc); /* Put it */
emilmont	1:46ce1e16c870	1306	if (!wc) wc = 0xFFFF; /* Padding chars following last char */
emilmont	1:46ce1e16c870	1307	} while (++s < 13);
emilmont	1:46ce1e16c870	1308	if (wc == 0xFFFF \|\| !lfnbuf[i]) ord \|= LLE; /* Bottom LFN part is the start of LFN sequence */
emilmont	1:46ce1e16c870	1309	dir[LDIR_Ord] = ord; /* Set the LFN order */
emilmont	1:46ce1e16c870	1310	}
emilmont	1:46ce1e16c870	1311
emilmont	1:46ce1e16c870	1312	#endif
emilmont	1:46ce1e16c870	1313	#endif
emilmont	1:46ce1e16c870	1314
emilmont	1:46ce1e16c870	1315
emilmont	1:46ce1e16c870	1316
emilmont	1:46ce1e16c870	1317	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1318	/* Create numbered name */
emilmont	1:46ce1e16c870	1319	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1320	#if _USE_LFN
emilmont	1:46ce1e16c870	1321	void gen_numname (
emilmont	1:46ce1e16c870	1322	BYTE dst, / Pointer to generated SFN */
emilmont	1:46ce1e16c870	1323	const BYTE src, / Pointer to source SFN to be modified */
emilmont	1:46ce1e16c870	1324	const WCHAR lfn, / Pointer to LFN */
emilmont	1:46ce1e16c870	1325	WORD seq /* Sequence number */
emilmont	1:46ce1e16c870	1326	)
emilmont	1:46ce1e16c870	1327	{
emilmont	1:46ce1e16c870	1328	BYTE ns[8], c;
emilmont	1:46ce1e16c870	1329	UINT i, j;
emilmont	1:46ce1e16c870	1330
emilmont	1:46ce1e16c870	1331
emilmont	1:46ce1e16c870	1332	mem_cpy(dst, src, 11);
emilmont	1:46ce1e16c870	1333
emilmont	1:46ce1e16c870	1334	if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
emilmont	1:46ce1e16c870	1335	do seq = (seq >> 1) + (seq << 15) + (WORD)lfn++; while (lfn);
emilmont	1:46ce1e16c870	1336	}
emilmont	1:46ce1e16c870	1337
emilmont	1:46ce1e16c870	1338	/* itoa (hexdecimal) */
emilmont	1:46ce1e16c870	1339	i = 7;
emilmont	1:46ce1e16c870	1340	do {
emilmont	1:46ce1e16c870	1341	c = (seq % 16) + '0';
emilmont	1:46ce1e16c870	1342	if (c > '9') c += 7;
emilmont	1:46ce1e16c870	1343	ns[i--] = c;
emilmont	1:46ce1e16c870	1344	seq /= 16;
emilmont	1:46ce1e16c870	1345	} while (seq);
emilmont	1:46ce1e16c870	1346	ns[i] = '~';
emilmont	1:46ce1e16c870	1347
emilmont	1:46ce1e16c870	1348	/* Append the number */
emilmont	1:46ce1e16c870	1349	for (j = 0; j < i && dst[j] != ' '; j++) {
emilmont	1:46ce1e16c870	1350	if (IsDBCS1(dst[j])) {
emilmont	1:46ce1e16c870	1351	if (j == i - 1) break;
emilmont	1:46ce1e16c870	1352	j++;
emilmont	1:46ce1e16c870	1353	}
emilmont	1:46ce1e16c870	1354	}
emilmont	1:46ce1e16c870	1355	do {
emilmont	1:46ce1e16c870	1356	dst[j++] = (i < 8) ? ns[i++] : ' ';
emilmont	1:46ce1e16c870	1357	} while (j < 8);
emilmont	1:46ce1e16c870	1358	}
emilmont	1:46ce1e16c870	1359	#endif
emilmont	1:46ce1e16c870	1360
emilmont	1:46ce1e16c870	1361
emilmont	1:46ce1e16c870	1362
emilmont	1:46ce1e16c870	1363
emilmont	1:46ce1e16c870	1364	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1365	/* Calculate sum of an SFN */
emilmont	1:46ce1e16c870	1366	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1367	#if _USE_LFN
emilmont	1:46ce1e16c870	1368	static
emilmont	1:46ce1e16c870	1369	BYTE sum_sfn (
emilmont	1:46ce1e16c870	1370	const BYTE dir / Ptr to directory entry */
emilmont	1:46ce1e16c870	1371	)
emilmont	1:46ce1e16c870	1372	{
emilmont	1:46ce1e16c870	1373	BYTE sum = 0;
emilmont	1:46ce1e16c870	1374	UINT n = 11;
emilmont	1:46ce1e16c870	1375
emilmont	1:46ce1e16c870	1376	do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
emilmont	1:46ce1e16c870	1377	return sum;
emilmont	1:46ce1e16c870	1378	}
emilmont	1:46ce1e16c870	1379	#endif
emilmont	1:46ce1e16c870	1380
emilmont	1:46ce1e16c870	1381
emilmont	1:46ce1e16c870	1382
emilmont	1:46ce1e16c870	1383
emilmont	1:46ce1e16c870	1384	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1385	/* Directory handling - Find an object in the directory */
emilmont	1:46ce1e16c870	1386	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1387
emilmont	1:46ce1e16c870	1388	static
emilmont	1:46ce1e16c870	1389	FRESULT dir_find (
emilmont	1:46ce1e16c870	1390	FATFS_DIR dj / Pointer to the directory object linked to the file name */
emilmont	1:46ce1e16c870	1391	)
emilmont	1:46ce1e16c870	1392	{
emilmont	1:46ce1e16c870	1393	FRESULT res;
emilmont	1:46ce1e16c870	1394	BYTE c, *dir;
emilmont	1:46ce1e16c870	1395	#if _USE_LFN
emilmont	1:46ce1e16c870	1396	BYTE a, ord, sum;
emilmont	1:46ce1e16c870	1397	#endif
emilmont	1:46ce1e16c870	1398
emilmont	1:46ce1e16c870	1399	res = dir_sdi(dj, 0); /* Rewind directory object */
emilmont	1:46ce1e16c870	1400	if (res != FR_OK) return res;
emilmont	1:46ce1e16c870	1401
emilmont	1:46ce1e16c870	1402	#if _USE_LFN
emilmont	1:46ce1e16c870	1403	ord = sum = 0xFF;
emilmont	1:46ce1e16c870	1404	#endif
emilmont	1:46ce1e16c870	1405	do {
emilmont	1:46ce1e16c870	1406	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1407	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1408	dir = dj->dir; /* Ptr to the directory entry of current index */
emilmont	1:46ce1e16c870	1409	c = dir[DIR_Name];
emilmont	1:46ce1e16c870	1410	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
emilmont	1:46ce1e16c870	1411	#if _USE_LFN /* LFN configuration */
emilmont	1:46ce1e16c870	1412	a = dir[DIR_Attr] & AM_MASK;
emilmont	1:46ce1e16c870	1413	if (c == DDE \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
emilmont	1:46ce1e16c870	1414	ord = 0xFF;
emilmont	1:46ce1e16c870	1415	} else {
emilmont	1:46ce1e16c870	1416	if (a == AM_LFN) { /* An LFN entry is found */
emilmont	1:46ce1e16c870	1417	if (dj->lfn) {
emilmont	1:46ce1e16c870	1418	if (c & LLE) { /* Is it start of LFN sequence? */
emilmont	1:46ce1e16c870	1419	sum = dir[LDIR_Chksum];
emilmont	1:46ce1e16c870	1420	c &= ~LLE; ord = c; /* LFN start order */
emilmont	1:46ce1e16c870	1421	dj->lfn_idx = dj->index;
emilmont	1:46ce1e16c870	1422	}
emilmont	1:46ce1e16c870	1423	/* Check validity of the LFN entry and compare it with given name */
emilmont	1:46ce1e16c870	1424	ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
emilmont	1:46ce1e16c870	1425	}
emilmont	1:46ce1e16c870	1426	} else { /* An SFN entry is found */
emilmont	1:46ce1e16c870	1427	if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
emilmont	1:46ce1e16c870	1428	ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
emilmont	1:46ce1e16c870	1429	if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
emilmont	1:46ce1e16c870	1430	}
emilmont	1:46ce1e16c870	1431	}
emilmont	1:46ce1e16c870	1432	#else /* Non LFN configuration */
emilmont	1:46ce1e16c870	1433	if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
emilmont	1:46ce1e16c870	1434	break;
emilmont	1:46ce1e16c870	1435	#endif
emilmont	1:46ce1e16c870	1436	res = dir_next(dj, 0); /* Next entry */
emilmont	1:46ce1e16c870	1437	} while (res == FR_OK);
emilmont	1:46ce1e16c870	1438
emilmont	1:46ce1e16c870	1439	return res;
emilmont	1:46ce1e16c870	1440	}
emilmont	1:46ce1e16c870	1441
emilmont	1:46ce1e16c870	1442
emilmont	1:46ce1e16c870	1443
emilmont	1:46ce1e16c870	1444
emilmont	1:46ce1e16c870	1445	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1446	/* Read an object from the directory */
emilmont	1:46ce1e16c870	1447	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1448	#if _FS_MINIMIZE <= 1
emilmont	1:46ce1e16c870	1449	static
emilmont	1:46ce1e16c870	1450	FRESULT dir_read (
emilmont	1:46ce1e16c870	1451	FATFS_DIR dj / Pointer to the directory object that pointing the entry to be read */
emilmont	1:46ce1e16c870	1452	)
emilmont	1:46ce1e16c870	1453	{
emilmont	1:46ce1e16c870	1454	FRESULT res;
emilmont	1:46ce1e16c870	1455	BYTE c, *dir;
emilmont	1:46ce1e16c870	1456	#if _USE_LFN
emilmont	1:46ce1e16c870	1457	BYTE a, ord = 0xFF, sum = 0xFF;
emilmont	1:46ce1e16c870	1458	#endif
emilmont	1:46ce1e16c870	1459
emilmont	1:46ce1e16c870	1460	res = FR_NO_FILE;
emilmont	1:46ce1e16c870	1461	while (dj->sect) {
emilmont	1:46ce1e16c870	1462	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1463	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1464	dir = dj->dir; /* Ptr to the directory entry of current index */
emilmont	1:46ce1e16c870	1465	c = dir[DIR_Name];
emilmont	1:46ce1e16c870	1466	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
emilmont	1:46ce1e16c870	1467	#if _USE_LFN /* LFN configuration */
emilmont	1:46ce1e16c870	1468	a = dir[DIR_Attr] & AM_MASK;
emilmont	1:46ce1e16c870	1469	if (c == DDE \|\| (!_FS_RPATH && c == '.') \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
emilmont	1:46ce1e16c870	1470	ord = 0xFF;
emilmont	1:46ce1e16c870	1471	} else {
emilmont	1:46ce1e16c870	1472	if (a == AM_LFN) { /* An LFN entry is found */
emilmont	1:46ce1e16c870	1473	if (c & LLE) { /* Is it start of LFN sequence? */
emilmont	1:46ce1e16c870	1474	sum = dir[LDIR_Chksum];
emilmont	1:46ce1e16c870	1475	c &= ~LLE; ord = c;
emilmont	1:46ce1e16c870	1476	dj->lfn_idx = dj->index;
emilmont	1:46ce1e16c870	1477	}
emilmont	1:46ce1e16c870	1478	/* Check LFN validity and capture it */
emilmont	1:46ce1e16c870	1479	ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
emilmont	1:46ce1e16c870	1480	} else { /* An SFN entry is found */
emilmont	1:46ce1e16c870	1481	if (ord \|\| sum != sum_sfn(dir)) /* Is there a valid LFN? */
emilmont	1:46ce1e16c870	1482	dj->lfn_idx = 0xFFFF; /* It has no LFN. */
emilmont	1:46ce1e16c870	1483	break;
emilmont	1:46ce1e16c870	1484	}
emilmont	1:46ce1e16c870	1485	}
emilmont	1:46ce1e16c870	1486	#else /* Non LFN configuration */
emilmont	1:46ce1e16c870	1487	if (c != DDE && (_FS_RPATH \|\| c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
emilmont	1:46ce1e16c870	1488	break;
emilmont	1:46ce1e16c870	1489	#endif
emilmont	1:46ce1e16c870	1490	res = dir_next(dj, 0); /* Next entry */
emilmont	1:46ce1e16c870	1491	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1492	}
emilmont	1:46ce1e16c870	1493
emilmont	1:46ce1e16c870	1494	if (res != FR_OK) dj->sect = 0;
emilmont	1:46ce1e16c870	1495
emilmont	1:46ce1e16c870	1496	return res;
emilmont	1:46ce1e16c870	1497	}
emilmont	1:46ce1e16c870	1498	#endif
emilmont	1:46ce1e16c870	1499
emilmont	1:46ce1e16c870	1500
emilmont	1:46ce1e16c870	1501
emilmont	1:46ce1e16c870	1502	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1503	/* Register an object to the directory */
emilmont	1:46ce1e16c870	1504	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1505	#if !_FS_READONLY
emilmont	1:46ce1e16c870	1506	static
emilmont	1:46ce1e16c870	1507	FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
emilmont	1:46ce1e16c870	1508	FATFS_DIR dj / Target directory with object name to be created */
emilmont	1:46ce1e16c870	1509	)
emilmont	1:46ce1e16c870	1510	{
emilmont	1:46ce1e16c870	1511	FRESULT res;
emilmont	1:46ce1e16c870	1512	BYTE c, *dir;
emilmont	1:46ce1e16c870	1513	#if _USE_LFN /* LFN configuration */
emilmont	1:46ce1e16c870	1514	WORD n, ne, is;
emilmont	1:46ce1e16c870	1515	BYTE sn[12], *fn, sum;
emilmont	1:46ce1e16c870	1516	WCHAR *lfn;
emilmont	1:46ce1e16c870	1517
emilmont	1:46ce1e16c870	1518
emilmont	1:46ce1e16c870	1519	fn = dj->fn; lfn = dj->lfn;
emilmont	1:46ce1e16c870	1520	mem_cpy(sn, fn, 12);
emilmont	1:46ce1e16c870	1521
emilmont	1:46ce1e16c870	1522	if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
emilmont	1:46ce1e16c870	1523	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1524
emilmont	1:46ce1e16c870	1525	if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
emilmont	1:46ce1e16c870	1526	fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
emilmont	1:46ce1e16c870	1527	for (n = 1; n < 100; n++) {
emilmont	1:46ce1e16c870	1528	gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
emilmont	1:46ce1e16c870	1529	res = dir_find(dj); /* Check if the name collides with existing SFN */
emilmont	1:46ce1e16c870	1530	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1531	}
emilmont	1:46ce1e16c870	1532	if (n == 100) return FR_DENIED; /* Abort if too many collisions */
emilmont	1:46ce1e16c870	1533	if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
emilmont	1:46ce1e16c870	1534	fn[NS] = sn[NS]; dj->lfn = lfn;
emilmont	1:46ce1e16c870	1535	}
emilmont	1:46ce1e16c870	1536
emilmont	1:46ce1e16c870	1537	if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
emilmont	1:46ce1e16c870	1538	for (ne = 0; lfn[ne]; ne++) ;
emilmont	1:46ce1e16c870	1539	ne = (ne + 25) / 13;
emilmont	1:46ce1e16c870	1540	} else { /* Otherwise reserve only an SFN entry. */
emilmont	1:46ce1e16c870	1541	ne = 1;
emilmont	1:46ce1e16c870	1542	}
emilmont	1:46ce1e16c870	1543
emilmont	1:46ce1e16c870	1544	/* Reserve contiguous entries */
emilmont	1:46ce1e16c870	1545	res = dir_sdi(dj, 0);
emilmont	1:46ce1e16c870	1546	if (res != FR_OK) return res;
emilmont	1:46ce1e16c870	1547	n = is = 0;
emilmont	1:46ce1e16c870	1548	do {
emilmont	1:46ce1e16c870	1549	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1550	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1551	c = dj->dir; / Check the entry status */
emilmont	1:46ce1e16c870	1552	if (c == DDE \|\| c == 0) { /* Is it a blank entry? */
emilmont	1:46ce1e16c870	1553	if (n == 0) is = dj->index; /* First index of the contiguous entry */
emilmont	1:46ce1e16c870	1554	if (++n == ne) break; /* A contiguous entry that required count is found */
emilmont	1:46ce1e16c870	1555	} else {
emilmont	1:46ce1e16c870	1556	n = 0; /* Not a blank entry. Restart to search */
emilmont	1:46ce1e16c870	1557	}
emilmont	1:46ce1e16c870	1558	res = dir_next(dj, 1); /* Next entry with table stretch */
emilmont	1:46ce1e16c870	1559	} while (res == FR_OK);
emilmont	1:46ce1e16c870	1560
emilmont	1:46ce1e16c870	1561	if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
emilmont	1:46ce1e16c870	1562	res = dir_sdi(dj, is);
emilmont	1:46ce1e16c870	1563	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1564	sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
emilmont	1:46ce1e16c870	1565	ne--;
emilmont	1:46ce1e16c870	1566	do { /* Store LFN entries in bottom first */
emilmont	1:46ce1e16c870	1567	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1568	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1569	fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
emilmont	1:46ce1e16c870	1570	dj->fs->wflag = 1;
emilmont	1:46ce1e16c870	1571	res = dir_next(dj, 0); /* Next entry */
emilmont	1:46ce1e16c870	1572	} while (res == FR_OK && --ne);
emilmont	1:46ce1e16c870	1573	}
emilmont	1:46ce1e16c870	1574	}
emilmont	1:46ce1e16c870	1575
emilmont	1:46ce1e16c870	1576	#else /* Non LFN configuration */
emilmont	1:46ce1e16c870	1577	res = dir_sdi(dj, 0);
emilmont	1:46ce1e16c870	1578	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1579	do { /* Find a blank entry for the SFN */
emilmont	1:46ce1e16c870	1580	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1581	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1582	c = *dj->dir;
emilmont	1:46ce1e16c870	1583	if (c == DDE \|\| c == 0) break; /* Is it a blank entry? */
emilmont	1:46ce1e16c870	1584	res = dir_next(dj, 1); /* Next entry with table stretch */
emilmont	1:46ce1e16c870	1585	} while (res == FR_OK);
emilmont	1:46ce1e16c870	1586	}
emilmont	1:46ce1e16c870	1587	#endif
emilmont	1:46ce1e16c870	1588
emilmont	1:46ce1e16c870	1589	if (res == FR_OK) { /* Initialize the SFN entry */
emilmont	1:46ce1e16c870	1590	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1591	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1592	dir = dj->dir;
emilmont	1:46ce1e16c870	1593	mem_set(dir, 0, SZ_DIR); /* Clean the entry */
emilmont	1:46ce1e16c870	1594	mem_cpy(dir, dj->fn, 11); /* Put SFN */
emilmont	1:46ce1e16c870	1595	#if _USE_LFN
emilmont	1:46ce1e16c870	1596	dir[DIR_NTres] = (dj->fn+NS) & (NS_BODY \| NS_EXT); / Put NT flag */
emilmont	1:46ce1e16c870	1597	#endif
emilmont	1:46ce1e16c870	1598	dj->fs->wflag = 1;
emilmont	1:46ce1e16c870	1599	}
emilmont	1:46ce1e16c870	1600	}
emilmont	1:46ce1e16c870	1601
emilmont	1:46ce1e16c870	1602	return res;
emilmont	1:46ce1e16c870	1603	}
emilmont	1:46ce1e16c870	1604	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	1605
emilmont	1:46ce1e16c870	1606
emilmont	1:46ce1e16c870	1607
emilmont	1:46ce1e16c870	1608
emilmont	1:46ce1e16c870	1609	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1610	/* Remove an object from the directory */
emilmont	1:46ce1e16c870	1611	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1612	#if !_FS_READONLY && !_FS_MINIMIZE
emilmont	1:46ce1e16c870	1613	static
emilmont	1:46ce1e16c870	1614	FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
emilmont	1:46ce1e16c870	1615	FATFS_DIR dj / Directory object pointing the entry to be removed */
emilmont	1:46ce1e16c870	1616	)
emilmont	1:46ce1e16c870	1617	{
emilmont	1:46ce1e16c870	1618	FRESULT res;
emilmont	1:46ce1e16c870	1619	#if _USE_LFN /* LFN configuration */
emilmont	1:46ce1e16c870	1620	WORD i;
emilmont	1:46ce1e16c870	1621
emilmont	1:46ce1e16c870	1622	i = dj->index; /* SFN index */
emilmont	1:46ce1e16c870	1623	res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
emilmont	1:46ce1e16c870	1624	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1625	do {
emilmont	1:46ce1e16c870	1626	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1627	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1628	dj->dir = DDE; / Mark the entry "deleted" */
emilmont	1:46ce1e16c870	1629	dj->fs->wflag = 1;
emilmont	1:46ce1e16c870	1630	if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
emilmont	1:46ce1e16c870	1631	res = dir_next(dj, 0); /* Next entry */
emilmont	1:46ce1e16c870	1632	} while (res == FR_OK);
emilmont	1:46ce1e16c870	1633	if (res == FR_NO_FILE) res = FR_INT_ERR;
emilmont	1:46ce1e16c870	1634	}
emilmont	1:46ce1e16c870	1635
emilmont	1:46ce1e16c870	1636	#else /* Non LFN configuration */
emilmont	1:46ce1e16c870	1637	res = dir_sdi(dj, dj->index);
emilmont	1:46ce1e16c870	1638	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1639	res = move_window(dj->fs, dj->sect);
emilmont	1:46ce1e16c870	1640	if (res == FR_OK) {
emilmont	1:46ce1e16c870	1641	dj->dir = DDE; / Mark the entry "deleted" */
emilmont	1:46ce1e16c870	1642	dj->fs->wflag = 1;
emilmont	1:46ce1e16c870	1643	}
emilmont	1:46ce1e16c870	1644	}
emilmont	1:46ce1e16c870	1645	#endif
emilmont	1:46ce1e16c870	1646
emilmont	1:46ce1e16c870	1647	return res;
emilmont	1:46ce1e16c870	1648	}
emilmont	1:46ce1e16c870	1649	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	1650
emilmont	1:46ce1e16c870	1651
emilmont	1:46ce1e16c870	1652
emilmont	1:46ce1e16c870	1653
emilmont	1:46ce1e16c870	1654	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1655	/* Pick a segment and create the object name in directory form */
emilmont	1:46ce1e16c870	1656	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1657
emilmont	1:46ce1e16c870	1658	static
emilmont	1:46ce1e16c870	1659	FRESULT create_name (
emilmont	1:46ce1e16c870	1660	FATFS_DIR dj, / Pointer to the directory object */
emilmont	1:46ce1e16c870	1661	const TCHAR *path / Pointer to pointer to the segment in the path string */
emilmont	1:46ce1e16c870	1662	)
emilmont	1:46ce1e16c870	1663	{
emilmont	1:46ce1e16c870	1664	#ifdef _EXCVT
emilmont	1:46ce1e16c870	1665	static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
emilmont	1:46ce1e16c870	1666	#endif
emilmont	1:46ce1e16c870	1667
emilmont	1:46ce1e16c870	1668	#if _USE_LFN /* LFN configuration */
emilmont	1:46ce1e16c870	1669	BYTE b, cf;
emilmont	1:46ce1e16c870	1670	WCHAR w, *lfn;
emilmont	1:46ce1e16c870	1671	UINT i, ni, si, di;
emilmont	1:46ce1e16c870	1672	const TCHAR *p;
emilmont	1:46ce1e16c870	1673
emilmont	1:46ce1e16c870	1674	/* Create LFN in Unicode */
emilmont	1:46ce1e16c870	1675	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
emilmont	1:46ce1e16c870	1676	lfn = dj->lfn;
emilmont	1:46ce1e16c870	1677	si = di = 0;
emilmont	1:46ce1e16c870	1678	for (;;) {
emilmont	1:46ce1e16c870	1679	w = p[si++]; /* Get a character */
emilmont	1:46ce1e16c870	1680	if (w < ' ' \|\| w == '/' \|\| w == '\\') break; /* Break on end of segment */
emilmont	1:46ce1e16c870	1681	if (di >= _MAX_LFN) /* Reject too long name */
emilmont	1:46ce1e16c870	1682	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1683	#if !_LFN_UNICODE
emilmont	1:46ce1e16c870	1684	w &= 0xFF;
emilmont	1:46ce1e16c870	1685	if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
emilmont	1:46ce1e16c870	1686	b = (BYTE)p[si++]; /* Get 2nd byte */
emilmont	1:46ce1e16c870	1687	if (!IsDBCS2(b))
emilmont	1:46ce1e16c870	1688	return FR_INVALID_NAME; /* Reject invalid sequence */
emilmont	1:46ce1e16c870	1689	w = (w << 8) + b; /* Create a DBC */
emilmont	1:46ce1e16c870	1690	}
emilmont	1:46ce1e16c870	1691	w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
emilmont	1:46ce1e16c870	1692	if (!w) return FR_INVALID_NAME; /* Reject invalid code */
emilmont	1:46ce1e16c870	1693	#endif
emilmont	1:46ce1e16c870	1694	if (w < 0x80 && chk_chr("\":<>\?\|\x7F", w)) / Reject illegal chars for LFN */
emilmont	1:46ce1e16c870	1695	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1696	lfn[di++] = w; /* Store the Unicode char */
emilmont	1:46ce1e16c870	1697	}
emilmont	1:46ce1e16c870	1698	path = &p[si]; / Return pointer to the next segment */
emilmont	1:46ce1e16c870	1699	cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
emilmont	1:46ce1e16c870	1700	#if _FS_RPATH
emilmont	1:46ce1e16c870	1701	if ((di == 1 && lfn[di-1] == '.') \|\| /* Is this a dot entry? */
emilmont	1:46ce1e16c870	1702	(di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
emilmont	1:46ce1e16c870	1703	lfn[di] = 0;
emilmont	1:46ce1e16c870	1704	for (i = 0; i < 11; i++)
emilmont	1:46ce1e16c870	1705	dj->fn[i] = (i < di) ? '.' : ' ';
emilmont	1:46ce1e16c870	1706	dj->fn[i] = cf \| NS_DOT; /* This is a dot entry */
emilmont	1:46ce1e16c870	1707	return FR_OK;
emilmont	1:46ce1e16c870	1708	}
emilmont	1:46ce1e16c870	1709	#endif
emilmont	1:46ce1e16c870	1710	while (di) { /* Strip trailing spaces and dots */
emilmont	1:46ce1e16c870	1711	w = lfn[di-1];
emilmont	1:46ce1e16c870	1712	if (w != ' ' && w != '.') break;
emilmont	1:46ce1e16c870	1713	di--;
emilmont	1:46ce1e16c870	1714	}
emilmont	1:46ce1e16c870	1715	if (!di) return FR_INVALID_NAME; /* Reject nul string */
emilmont	1:46ce1e16c870	1716
emilmont	1:46ce1e16c870	1717	lfn[di] = 0; /* LFN is created */
emilmont	1:46ce1e16c870	1718
emilmont	1:46ce1e16c870	1719	/* Create SFN in directory form */
emilmont	1:46ce1e16c870	1720	mem_set(dj->fn, ' ', 11);
emilmont	1:46ce1e16c870	1721	for (si = 0; lfn[si] == ' ' \|\| lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
emilmont	1:46ce1e16c870	1722	if (si) cf \|= NS_LOSS \| NS_LFN;
emilmont	1:46ce1e16c870	1723	while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
emilmont	1:46ce1e16c870	1724
emilmont	1:46ce1e16c870	1725	b = i = 0; ni = 8;
emilmont	1:46ce1e16c870	1726	for (;;) {
emilmont	1:46ce1e16c870	1727	w = lfn[si++]; /* Get an LFN char */
emilmont	1:46ce1e16c870	1728	if (!w) break; /* Break on end of the LFN */
emilmont	1:46ce1e16c870	1729	if (w == ' ' \|\| (w == '.' && si != di)) { /* Remove spaces and dots */
emilmont	1:46ce1e16c870	1730	cf \|= NS_LOSS \| NS_LFN; continue;
emilmont	1:46ce1e16c870	1731	}
emilmont	1:46ce1e16c870	1732
emilmont	1:46ce1e16c870	1733	if (i >= ni \|\| si == di) { /* Extension or end of SFN */
emilmont	1:46ce1e16c870	1734	if (ni == 11) { /* Long extension */
emilmont	1:46ce1e16c870	1735	cf \|= NS_LOSS \| NS_LFN; break;
emilmont	1:46ce1e16c870	1736	}
emilmont	1:46ce1e16c870	1737	if (si != di) cf \|= NS_LOSS \| NS_LFN; /* Out of 8.3 format */
emilmont	1:46ce1e16c870	1738	if (si > di) break; /* No extension */
emilmont	1:46ce1e16c870	1739	si = di; i = 8; ni = 11; /* Enter extension section */
emilmont	1:46ce1e16c870	1740	b <<= 2; continue;
emilmont	1:46ce1e16c870	1741	}
emilmont	1:46ce1e16c870	1742
emilmont	1:46ce1e16c870	1743	if (w >= 0x80) { /* Non ASCII char */
emilmont	1:46ce1e16c870	1744	#ifdef _EXCVT
emilmont	1:46ce1e16c870	1745	w = ff_convert(w, 0); /* Unicode -> OEM code */
emilmont	1:46ce1e16c870	1746	if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
emilmont	1:46ce1e16c870	1747	#else
emilmont	1:46ce1e16c870	1748	w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
emilmont	1:46ce1e16c870	1749	#endif
emilmont	1:46ce1e16c870	1750	cf \|= NS_LFN; /* Force create LFN entry */
emilmont	1:46ce1e16c870	1751	}
emilmont	1:46ce1e16c870	1752
emilmont	1:46ce1e16c870	1753	if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
emilmont	1:46ce1e16c870	1754	if (i >= ni - 1) {
emilmont	1:46ce1e16c870	1755	cf \|= NS_LOSS \| NS_LFN; i = ni; continue;
emilmont	1:46ce1e16c870	1756	}
emilmont	1:46ce1e16c870	1757	dj->fn[i++] = (BYTE)(w >> 8);
emilmont	1:46ce1e16c870	1758	} else { /* Single byte char */
emilmont	1:46ce1e16c870	1759	if (!w \|\| chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
emilmont	1:46ce1e16c870	1760	w = '_'; cf \|= NS_LOSS \| NS_LFN;/* Lossy conversion */
emilmont	1:46ce1e16c870	1761	} else {
emilmont	1:46ce1e16c870	1762	if (IsUpper(w)) { /* ASCII large capital */
emilmont	1:46ce1e16c870	1763	b \|= 2;
emilmont	1:46ce1e16c870	1764	} else {
emilmont	1:46ce1e16c870	1765	if (IsLower(w)) { /* ASCII small capital */
emilmont	1:46ce1e16c870	1766	b \|= 1; w -= 0x20;
emilmont	1:46ce1e16c870	1767	}
emilmont	1:46ce1e16c870	1768	}
emilmont	1:46ce1e16c870	1769	}
emilmont	1:46ce1e16c870	1770	}
emilmont	1:46ce1e16c870	1771	dj->fn[i++] = (BYTE)w;
emilmont	1:46ce1e16c870	1772	}
emilmont	1:46ce1e16c870	1773
emilmont	1:46ce1e16c870	1774	if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
emilmont	1:46ce1e16c870	1775
emilmont	1:46ce1e16c870	1776	if (ni == 8) b <<= 2;
emilmont	1:46ce1e16c870	1777	if ((b & 0x0C) == 0x0C \|\| (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
emilmont	1:46ce1e16c870	1778	cf \|= NS_LFN;
emilmont	1:46ce1e16c870	1779	if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
emilmont	1:46ce1e16c870	1780	if ((b & 0x03) == 0x01) cf \|= NS_EXT; /* NT flag (Extension has only small capital) */
emilmont	1:46ce1e16c870	1781	if ((b & 0x0C) == 0x04) cf \|= NS_BODY; /* NT flag (Filename has only small capital) */
emilmont	1:46ce1e16c870	1782	}
emilmont	1:46ce1e16c870	1783
emilmont	1:46ce1e16c870	1784	dj->fn[NS] = cf; /* SFN is created */
emilmont	1:46ce1e16c870	1785
emilmont	1:46ce1e16c870	1786	return FR_OK;
emilmont	1:46ce1e16c870	1787
emilmont	1:46ce1e16c870	1788
emilmont	1:46ce1e16c870	1789	#else /* Non-LFN configuration */
emilmont	1:46ce1e16c870	1790	BYTE b, c, d, *sfn;
emilmont	1:46ce1e16c870	1791	UINT ni, si, i;
emilmont	1:46ce1e16c870	1792	const char *p;
emilmont	1:46ce1e16c870	1793
emilmont	1:46ce1e16c870	1794	/* Create file name in directory form */
emilmont	1:46ce1e16c870	1795	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
emilmont	1:46ce1e16c870	1796	sfn = dj->fn;
emilmont	1:46ce1e16c870	1797	mem_set(sfn, ' ', 11);
emilmont	1:46ce1e16c870	1798	si = i = b = 0; ni = 8;
emilmont	1:46ce1e16c870	1799	#if _FS_RPATH
emilmont	1:46ce1e16c870	1800	if (p[si] == '.') { /* Is this a dot entry? */
emilmont	1:46ce1e16c870	1801	for (;;) {
emilmont	1:46ce1e16c870	1802	c = (BYTE)p[si++];
emilmont	1:46ce1e16c870	1803	if (c != '.' \|\| si >= 3) break;
emilmont	1:46ce1e16c870	1804	sfn[i++] = c;
emilmont	1:46ce1e16c870	1805	}
emilmont	1:46ce1e16c870	1806	if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1807	path = &p[si]; / Return pointer to the next segment */
emilmont	1:46ce1e16c870	1808	sfn[NS] = (c <= ' ') ? NS_LAST \| NS_DOT : NS_DOT; /* Set last segment flag if end of path */
emilmont	1:46ce1e16c870	1809	return FR_OK;
emilmont	1:46ce1e16c870	1810	}
emilmont	1:46ce1e16c870	1811	#endif
emilmont	1:46ce1e16c870	1812	for (;;) {
emilmont	1:46ce1e16c870	1813	c = (BYTE)p[si++];
emilmont	1:46ce1e16c870	1814	if (c <= ' ' \|\| c == '/' \|\| c == '\\') break; /* Break on end of segment */
emilmont	1:46ce1e16c870	1815	if (c == '.' \|\| i >= ni) {
emilmont	1:46ce1e16c870	1816	if (ni != 8 \|\| c != '.') return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1817	i = 8; ni = 11;
emilmont	1:46ce1e16c870	1818	b <<= 2; continue;
emilmont	1:46ce1e16c870	1819	}
emilmont	1:46ce1e16c870	1820	if (c >= 0x80) { /* Extended char? */
emilmont	1:46ce1e16c870	1821	b \|= 3; /* Eliminate NT flag */
emilmont	1:46ce1e16c870	1822	#ifdef _EXCVT
emilmont	1:46ce1e16c870	1823	c = excvt[c - 0x80]; /* Upper conversion (SBCS) */
emilmont	1:46ce1e16c870	1824	#else
emilmont	1:46ce1e16c870	1825	#if !_DF1S /* ASCII only cfg */
emilmont	1:46ce1e16c870	1826	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1827	#endif
emilmont	1:46ce1e16c870	1828	#endif
emilmont	1:46ce1e16c870	1829	}
emilmont	1:46ce1e16c870	1830	if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
emilmont	1:46ce1e16c870	1831	d = (BYTE)p[si++]; /* Get 2nd byte */
emilmont	1:46ce1e16c870	1832	if (!IsDBCS2(d) \|\| i >= ni - 1) /* Reject invalid DBC */
emilmont	1:46ce1e16c870	1833	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1834	sfn[i++] = c;
emilmont	1:46ce1e16c870	1835	sfn[i++] = d;
emilmont	1:46ce1e16c870	1836	} else { /* Single byte code */
emilmont	1:46ce1e16c870	1837	if (chk_chr("\"+,:;<=>\?[]\|\x7F", c)) / Reject illegal chrs for SFN */
emilmont	1:46ce1e16c870	1838	return FR_INVALID_NAME;
emilmont	1:46ce1e16c870	1839	if (IsUpper(c)) { /* ASCII large capital? */
emilmont	1:46ce1e16c870	1840	b \|= 2;
emilmont	1:46ce1e16c870	1841	} else {
emilmont	1:46ce1e16c870	1842	if (IsLower(c)) { /* ASCII small capital? */
emilmont	1:46ce1e16c870	1843	b \|= 1; c -= 0x20;
emilmont	1:46ce1e16c870	1844	}
emilmont	1:46ce1e16c870	1845	}
emilmont	1:46ce1e16c870	1846	sfn[i++] = c;
emilmont	1:46ce1e16c870	1847	}
emilmont	1:46ce1e16c870	1848	}
emilmont	1:46ce1e16c870	1849	path = &p[si]; / Return pointer to the next segment */
emilmont	1:46ce1e16c870	1850	c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
emilmont	1:46ce1e16c870	1851
emilmont	1:46ce1e16c870	1852	if (!i) return FR_INVALID_NAME; /* Reject nul string */
emilmont	1:46ce1e16c870	1853	if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
emilmont	1:46ce1e16c870	1854
emilmont	1:46ce1e16c870	1855	if (ni == 8) b <<= 2;
emilmont	1:46ce1e16c870	1856	if ((b & 0x03) == 0x01) c \|= NS_EXT; /* NT flag (Name extension has only small capital) */
emilmont	1:46ce1e16c870	1857	if ((b & 0x0C) == 0x04) c \|= NS_BODY; /* NT flag (Name body has only small capital) */
emilmont	1:46ce1e16c870	1858
emilmont	1:46ce1e16c870	1859	sfn[NS] = c; /* Store NT flag, File name is created */
emilmont	1:46ce1e16c870	1860
emilmont	1:46ce1e16c870	1861	return FR_OK;
emilmont	1:46ce1e16c870	1862	#endif
emilmont	1:46ce1e16c870	1863	}
emilmont	1:46ce1e16c870	1864
emilmont	1:46ce1e16c870	1865
emilmont	1:46ce1e16c870	1866
emilmont	1:46ce1e16c870	1867
emilmont	1:46ce1e16c870	1868	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1869	/* Get file information from directory entry */
emilmont	1:46ce1e16c870	1870	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1871	#if _FS_MINIMIZE <= 1
emilmont	1:46ce1e16c870	1872	static
emilmont	1:46ce1e16c870	1873	void get_fileinfo ( /* No return code */
emilmont	1:46ce1e16c870	1874	FATFS_DIR dj, / Pointer to the directory object */
emilmont	1:46ce1e16c870	1875	FILINFO fno / Pointer to the file information to be filled */
emilmont	1:46ce1e16c870	1876	)
emilmont	1:46ce1e16c870	1877	{
emilmont	1:46ce1e16c870	1878	UINT i;
emilmont	1:46ce1e16c870	1879	BYTE nt, *dir;
emilmont	1:46ce1e16c870	1880	TCHAR *p, c;
emilmont	1:46ce1e16c870	1881
emilmont	1:46ce1e16c870	1882
emilmont	1:46ce1e16c870	1883	p = fno->fname;
emilmont	1:46ce1e16c870	1884	if (dj->sect) {
emilmont	1:46ce1e16c870	1885	dir = dj->dir;
emilmont	1:46ce1e16c870	1886	nt = dir[DIR_NTres]; /* NT flag */
emilmont	1:46ce1e16c870	1887	for (i = 0; i < 8; i++) { /* Copy name body */
emilmont	1:46ce1e16c870	1888	c = dir[i];
emilmont	1:46ce1e16c870	1889	if (c == ' ') break;
emilmont	1:46ce1e16c870	1890	if (c == NDDE) c = (TCHAR)DDE;
emilmont	1:46ce1e16c870	1891	if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
emilmont	1:46ce1e16c870	1892	#if _LFN_UNICODE
emilmont	1:46ce1e16c870	1893	if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
emilmont	1:46ce1e16c870	1894	c = (c << 8) \| dir[++i];
emilmont	1:46ce1e16c870	1895	c = ff_convert(c, 1);
emilmont	1:46ce1e16c870	1896	if (!c) c = '?';
emilmont	1:46ce1e16c870	1897	#endif
emilmont	1:46ce1e16c870	1898	*p++ = c;
emilmont	1:46ce1e16c870	1899	}
emilmont	1:46ce1e16c870	1900	if (dir[8] != ' ') { /* Copy name extension */
emilmont	1:46ce1e16c870	1901	*p++ = '.';
emilmont	1:46ce1e16c870	1902	for (i = 8; i < 11; i++) {
emilmont	1:46ce1e16c870	1903	c = dir[i];
emilmont	1:46ce1e16c870	1904	if (c == ' ') break;
emilmont	1:46ce1e16c870	1905	if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
emilmont	1:46ce1e16c870	1906	#if _LFN_UNICODE
emilmont	1:46ce1e16c870	1907	if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
emilmont	1:46ce1e16c870	1908	c = (c << 8) \| dir[++i];
emilmont	1:46ce1e16c870	1909	c = ff_convert(c, 1);
emilmont	1:46ce1e16c870	1910	if (!c) c = '?';
emilmont	1:46ce1e16c870	1911	#endif
emilmont	1:46ce1e16c870	1912	*p++ = c;
emilmont	1:46ce1e16c870	1913	}
emilmont	1:46ce1e16c870	1914	}
emilmont	1:46ce1e16c870	1915	fno->fattrib = dir[DIR_Attr]; /* Attribute */
emilmont	1:46ce1e16c870	1916	fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
emilmont	1:46ce1e16c870	1917	fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
emilmont	1:46ce1e16c870	1918	fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
emilmont	1:46ce1e16c870	1919	}
emilmont	1:46ce1e16c870	1920	p = 0; / Terminate SFN str by a \0 */
emilmont	1:46ce1e16c870	1921
emilmont	1:46ce1e16c870	1922	#if _USE_LFN
emilmont	1:46ce1e16c870	1923	if (fno->lfname && fno->lfsize) {
emilmont	1:46ce1e16c870	1924	TCHAR *tp = fno->lfname;
emilmont	1:46ce1e16c870	1925	WCHAR w, *lfn;
emilmont	1:46ce1e16c870	1926
emilmont	1:46ce1e16c870	1927	i = 0;
emilmont	1:46ce1e16c870	1928	if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
emilmont	1:46ce1e16c870	1929	lfn = dj->lfn;
emilmont	1:46ce1e16c870	1930	while ((w = lfn++) != 0) { / Get an LFN char */
emilmont	1:46ce1e16c870	1931	#if !_LFN_UNICODE
emilmont	1:46ce1e16c870	1932	w = ff_convert(w, 0); /* Unicode -> OEM conversion */
emilmont	1:46ce1e16c870	1933	if (!w) { i = 0; break; } /* Could not convert, no LFN */
emilmont	1:46ce1e16c870	1934	if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
emilmont	1:46ce1e16c870	1935	tp[i++] = (TCHAR)(w >> 8);
emilmont	1:46ce1e16c870	1936	#endif
emilmont	1:46ce1e16c870	1937	if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
emilmont	1:46ce1e16c870	1938	tp[i++] = (TCHAR)w;
emilmont	1:46ce1e16c870	1939	}
emilmont	1:46ce1e16c870	1940	}
emilmont	1:46ce1e16c870	1941	tp[i] = 0; /* Terminate the LFN str by a \0 */
emilmont	1:46ce1e16c870	1942	}
emilmont	1:46ce1e16c870	1943	#endif
emilmont	1:46ce1e16c870	1944	}
emilmont	1:46ce1e16c870	1945	#endif /* _FS_MINIMIZE <= 1 */
emilmont	1:46ce1e16c870	1946
emilmont	1:46ce1e16c870	1947
emilmont	1:46ce1e16c870	1948
emilmont	1:46ce1e16c870	1949
emilmont	1:46ce1e16c870	1950	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1951	/* Follow a file path */
emilmont	1:46ce1e16c870	1952	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	1953
emilmont	1:46ce1e16c870	1954	static
emilmont	1:46ce1e16c870	1955	FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
emilmont	1:46ce1e16c870	1956	FATFS_DIR dj, / Directory object to return last directory and found object */
emilmont	1:46ce1e16c870	1957	const TCHAR path / Full-path string to find a file or directory */
emilmont	1:46ce1e16c870	1958	)
emilmont	1:46ce1e16c870	1959	{
emilmont	1:46ce1e16c870	1960	FRESULT res;
emilmont	1:46ce1e16c870	1961	BYTE *dir, ns;
emilmont	1:46ce1e16c870	1962
emilmont	1:46ce1e16c870	1963
emilmont	1:46ce1e16c870	1964	#if _FS_RPATH
emilmont	1:46ce1e16c870	1965	if (path == '/' \|\| path == '\\') { /* There is a heading separator */
emilmont	1:46ce1e16c870	1966	path++; dj->sclust = 0; /* Strip it and start from the root dir */
emilmont	1:46ce1e16c870	1967	} else { /* No heading separator */
emilmont	1:46ce1e16c870	1968	dj->sclust = dj->fs->cdir; /* Start from the current dir */
emilmont	1:46ce1e16c870	1969	}
emilmont	1:46ce1e16c870	1970	#else
emilmont	1:46ce1e16c870	1971	if (path == '/' \|\| path == '\\') /* Strip heading separator if exist */
emilmont	1:46ce1e16c870	1972	path++;
emilmont	1:46ce1e16c870	1973	dj->sclust = 0; /* Start from the root dir */
emilmont	1:46ce1e16c870	1974	#endif
emilmont	1:46ce1e16c870	1975
emilmont	1:46ce1e16c870	1976	if ((UINT)path < ' ') { / Nul path means the start directory itself */
emilmont	1:46ce1e16c870	1977	res = dir_sdi(dj, 0);
emilmont	1:46ce1e16c870	1978	dj->dir = 0;
emilmont	1:46ce1e16c870	1979	} else { /* Follow path */
emilmont	1:46ce1e16c870	1980	for (;;) {
emilmont	1:46ce1e16c870	1981	res = create_name(dj, &path); /* Get a segment */
emilmont	1:46ce1e16c870	1982	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	1983	res = dir_find(dj); /* Find it */
emilmont	1:46ce1e16c870	1984	ns = *(dj->fn+NS);
emilmont	1:46ce1e16c870	1985	if (res != FR_OK) { /* Failed to find the object */
emilmont	1:46ce1e16c870	1986	if (res != FR_NO_FILE) break; /* Abort if any hard error occurred */
emilmont	1:46ce1e16c870	1987	/* Object not found */
emilmont	1:46ce1e16c870	1988	if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
emilmont	1:46ce1e16c870	1989	dj->sclust = 0; dj->dir = 0; /* It is the root dir */
emilmont	1:46ce1e16c870	1990	res = FR_OK;
emilmont	1:46ce1e16c870	1991	if (!(ns & NS_LAST)) continue;
emilmont	1:46ce1e16c870	1992	} else { /* Could not find the object */
emilmont	1:46ce1e16c870	1993	if (!(ns & NS_LAST)) res = FR_NO_PATH;
emilmont	1:46ce1e16c870	1994	}
emilmont	1:46ce1e16c870	1995	break;
emilmont	1:46ce1e16c870	1996	}
emilmont	1:46ce1e16c870	1997	if (ns & NS_LAST) break; /* Last segment match. Function completed. */
emilmont	1:46ce1e16c870	1998	dir = dj->dir; /* There is next segment. Follow the sub directory */
emilmont	1:46ce1e16c870	1999	if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
emilmont	1:46ce1e16c870	2000	res = FR_NO_PATH; break;
emilmont	1:46ce1e16c870	2001	}
emilmont	1:46ce1e16c870	2002	dj->sclust = ld_clust(dj->fs, dir);
emilmont	1:46ce1e16c870	2003	}
emilmont	1:46ce1e16c870	2004	}
emilmont	1:46ce1e16c870	2005
emilmont	1:46ce1e16c870	2006	return res;
emilmont	1:46ce1e16c870	2007	}
emilmont	1:46ce1e16c870	2008
emilmont	1:46ce1e16c870	2009
emilmont	1:46ce1e16c870	2010
emilmont	1:46ce1e16c870	2011
emilmont	1:46ce1e16c870	2012	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2013	/* Load a sector and check if it is an FAT Volume Boot Record */
emilmont	1:46ce1e16c870	2014	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2015
emilmont	1:46ce1e16c870	2016	static
emilmont	1:46ce1e16c870	2017	BYTE check_fs ( /* 0:FAT-VBR, 1:Any BR but not FAT, 2:Not a BR, 3:Disk error */
emilmont	1:46ce1e16c870	2018	FATFS fs, / File system object */
emilmont	1:46ce1e16c870	2019	DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
emilmont	1:46ce1e16c870	2020	)
emilmont	1:46ce1e16c870	2021	{
emilmont	1:46ce1e16c870	2022	if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
emilmont	1:46ce1e16c870	2023	return 3;
emilmont	1:46ce1e16c870	2024	if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
emilmont	1:46ce1e16c870	2025	return 2;
emilmont	1:46ce1e16c870	2026
emilmont	1:46ce1e16c870	2027	if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
emilmont	1:46ce1e16c870	2028	return 0;
emilmont	1:46ce1e16c870	2029	if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
emilmont	1:46ce1e16c870	2030	return 0;
emilmont	1:46ce1e16c870	2031
emilmont	1:46ce1e16c870	2032	return 1;
emilmont	1:46ce1e16c870	2033	}
emilmont	1:46ce1e16c870	2034
emilmont	1:46ce1e16c870	2035
emilmont	1:46ce1e16c870	2036
emilmont	1:46ce1e16c870	2037
emilmont	1:46ce1e16c870	2038	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2039	/* Check if the file system object is valid or not */
emilmont	1:46ce1e16c870	2040	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2041
emilmont	1:46ce1e16c870	2042	static
emilmont	1:46ce1e16c870	2043	FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
emilmont	1:46ce1e16c870	2044	const TCHAR *path, / Pointer to pointer to the path name (drive number) */
emilmont	1:46ce1e16c870	2045	FATFS *rfs, / Pointer to pointer to the found file system object */
emilmont	1:46ce1e16c870	2046	BYTE wmode /* !=0: Check write protection for write access */
emilmont	1:46ce1e16c870	2047	)
emilmont	1:46ce1e16c870	2048	{
emilmont	1:46ce1e16c870	2049	BYTE fmt, b, pi, *tbl;
emilmont	1:46ce1e16c870	2050	UINT vol;
emilmont	1:46ce1e16c870	2051	DSTATUS stat;
emilmont	1:46ce1e16c870	2052	DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
emilmont	1:46ce1e16c870	2053	WORD nrsv;
emilmont	1:46ce1e16c870	2054	const TCHAR p = path;
emilmont	1:46ce1e16c870	2055	FATFS *fs;
emilmont	1:46ce1e16c870	2056
emilmont	1:46ce1e16c870	2057
emilmont	1:46ce1e16c870	2058	/* Get logical drive number from the path name */
emilmont	1:46ce1e16c870	2059	vol = p[0] - '0'; /* Is there a drive number? */
emilmont	1:46ce1e16c870	2060	if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
emilmont	1:46ce1e16c870	2061	p += 2; path = p; / Return pointer to the path name */
emilmont	1:46ce1e16c870	2062	} else { /* No drive number is given */
emilmont	1:46ce1e16c870	2063	#if _FS_RPATH
emilmont	1:46ce1e16c870	2064	vol = CurrVol; /* Use current drive */
emilmont	1:46ce1e16c870	2065	#else
emilmont	1:46ce1e16c870	2066	vol = 0; /* Use drive 0 */
emilmont	1:46ce1e16c870	2067	#endif
emilmont	1:46ce1e16c870	2068	}
emilmont	1:46ce1e16c870	2069
emilmont	1:46ce1e16c870	2070	/* Check if the file system object is valid or not */
emilmont	1:46ce1e16c870	2071	*rfs = 0;
emilmont	1:46ce1e16c870	2072	if (vol >= _VOLUMES) /* Is the drive number valid? */
emilmont	1:46ce1e16c870	2073	return FR_INVALID_DRIVE;
emilmont	1:46ce1e16c870	2074	fs = FatFs[vol]; /* Get corresponding file system object */
emilmont	1:46ce1e16c870	2075	if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
emilmont	1:46ce1e16c870	2076
emilmont	1:46ce1e16c870	2077	ENTER_FF(fs); /* Lock file system */
emilmont	1:46ce1e16c870	2078
emilmont	1:46ce1e16c870	2079	rfs = fs; / Return pointer to the corresponding file system object */
emilmont	1:46ce1e16c870	2080	if (fs->fs_type) { /* If the volume has been mounted */
emilmont	1:46ce1e16c870	2081	stat = disk_status(fs->drv);
emilmont	1:46ce1e16c870	2082	if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
emilmont	1:46ce1e16c870	2083	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
emilmont	1:46ce1e16c870	2084	return FR_WRITE_PROTECTED;
emilmont	1:46ce1e16c870	2085	return FR_OK; /* The file system object is valid */
emilmont	1:46ce1e16c870	2086	}
emilmont	1:46ce1e16c870	2087	}
emilmont	1:46ce1e16c870	2088
emilmont	1:46ce1e16c870	2089	/* The file system object is not valid. */
emilmont	1:46ce1e16c870	2090	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
emilmont	1:46ce1e16c870	2091
emilmont	1:46ce1e16c870	2092	fs->fs_type = 0; /* Clear the file system object */
emilmont	1:46ce1e16c870	2093	fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
emilmont	1:46ce1e16c870	2094	stat = disk_initialize(fs->drv); /* Initialize the physical drive */
emilmont	1:46ce1e16c870	2095	if (stat & STA_NOINIT) /* Check if the initialization succeeded */
emilmont	1:46ce1e16c870	2096	return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
emilmont	1:46ce1e16c870	2097	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
emilmont	1:46ce1e16c870	2098	return FR_WRITE_PROTECTED;
emilmont	1:46ce1e16c870	2099	#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
emilmont	1:46ce1e16c870	2100	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
emilmont	1:46ce1e16c870	2101	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	2102	#endif
emilmont	1:46ce1e16c870	2103	/* Search FAT partition on the drive. Supports only generic partitions, FDISK and SFD. */
emilmont	1:46ce1e16c870	2104	fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */
emilmont	1:46ce1e16c870	2105	if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */
emilmont	1:46ce1e16c870	2106	if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */
emilmont	1:46ce1e16c870	2107	/* Check the partition listed in the partition table */
emilmont	1:46ce1e16c870	2108	pi = LD2PT(vol);
emilmont	1:46ce1e16c870	2109	if (pi) pi--;
emilmont	1:46ce1e16c870	2110	tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */
emilmont	1:46ce1e16c870	2111	if (tbl[4]) { /* Is the partition existing? */
emilmont	1:46ce1e16c870	2112	bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
emilmont	1:46ce1e16c870	2113	fmt = check_fs(fs, bsect); /* Check the partition */
emilmont	1:46ce1e16c870	2114	}
emilmont	1:46ce1e16c870	2115	}
emilmont	1:46ce1e16c870	2116	if (fmt == 3) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	2117	if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
emilmont	1:46ce1e16c870	2118
emilmont	1:46ce1e16c870	2119	/* An FAT volume is found. Following code initializes the file system object */
emilmont	1:46ce1e16c870	2120
emilmont	1:46ce1e16c870	2121	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
emilmont	1:46ce1e16c870	2122	return FR_NO_FILESYSTEM;
emilmont	1:46ce1e16c870	2123
emilmont	1:46ce1e16c870	2124	fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
emilmont	1:46ce1e16c870	2125	if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
emilmont	1:46ce1e16c870	2126	fs->fsize = fasize;
emilmont	1:46ce1e16c870	2127
emilmont	1:46ce1e16c870	2128	fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
emilmont	1:46ce1e16c870	2129	if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
emilmont	1:46ce1e16c870	2130	fasize = b; / Number of sectors for FAT area */
emilmont	1:46ce1e16c870	2131
emilmont	1:46ce1e16c870	2132	fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
emilmont	1:46ce1e16c870	2133	if (!b \|\| (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
emilmont	1:46ce1e16c870	2134
emilmont	1:46ce1e16c870	2135	fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
emilmont	1:46ce1e16c870	2136	if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
emilmont	1:46ce1e16c870	2137
emilmont	1:46ce1e16c870	2138	tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
emilmont	1:46ce1e16c870	2139	if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
emilmont	1:46ce1e16c870	2140
emilmont	1:46ce1e16c870	2141	nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
emilmont	1:46ce1e16c870	2142	if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
emilmont	1:46ce1e16c870	2143
emilmont	1:46ce1e16c870	2144	/* Determine the FAT sub type */
emilmont	1:46ce1e16c870	2145	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
emilmont	1:46ce1e16c870	2146	if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
emilmont	1:46ce1e16c870	2147	nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
emilmont	1:46ce1e16c870	2148	if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
emilmont	1:46ce1e16c870	2149	fmt = FS_FAT12;
emilmont	1:46ce1e16c870	2150	if (nclst >= MIN_FAT16) fmt = FS_FAT16;
emilmont	1:46ce1e16c870	2151	if (nclst >= MIN_FAT32) fmt = FS_FAT32;
emilmont	1:46ce1e16c870	2152
emilmont	1:46ce1e16c870	2153	/* Boundaries and Limits */
emilmont	1:46ce1e16c870	2154	fs->n_fatent = nclst + 2; /* Number of FAT entries */
emilmont	1:46ce1e16c870	2155	fs->database = bsect + sysect; /* Data start sector */
emilmont	1:46ce1e16c870	2156	fs->fatbase = bsect + nrsv; /* FAT start sector */
emilmont	1:46ce1e16c870	2157	if (fmt == FS_FAT32) {
emilmont	1:46ce1e16c870	2158	if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
emilmont	1:46ce1e16c870	2159	fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
emilmont	1:46ce1e16c870	2160	szbfat = fs->n_fatent * 4; /* (Required FAT size) */
emilmont	1:46ce1e16c870	2161	} else {
emilmont	1:46ce1e16c870	2162	if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
emilmont	1:46ce1e16c870	2163	fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
emilmont	1:46ce1e16c870	2164	szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
emilmont	1:46ce1e16c870	2165	fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
emilmont	1:46ce1e16c870	2166	}
emilmont	1:46ce1e16c870	2167	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
emilmont	1:46ce1e16c870	2168	return FR_NO_FILESYSTEM;
emilmont	1:46ce1e16c870	2169
emilmont	1:46ce1e16c870	2170	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2171	/* Initialize cluster allocation information */
emilmont	1:46ce1e16c870	2172	fs->free_clust = 0xFFFFFFFF;
emilmont	1:46ce1e16c870	2173	fs->last_clust = 0;
emilmont	1:46ce1e16c870	2174
emilmont	1:46ce1e16c870	2175	/* Get fsinfo if available */
emilmont	1:46ce1e16c870	2176	if (fmt == FS_FAT32) {
emilmont	1:46ce1e16c870	2177	fs->fsi_flag = 0;
emilmont	1:46ce1e16c870	2178	fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
emilmont	1:46ce1e16c870	2179	if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
emilmont	1:46ce1e16c870	2180	LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
emilmont	1:46ce1e16c870	2181	LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
emilmont	1:46ce1e16c870	2182	LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
emilmont	1:46ce1e16c870	2183	fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
emilmont	1:46ce1e16c870	2184	fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
emilmont	1:46ce1e16c870	2185	}
emilmont	1:46ce1e16c870	2186	}
emilmont	1:46ce1e16c870	2187	#endif
emilmont	1:46ce1e16c870	2188	fs->fs_type = fmt; /* FAT sub-type */
emilmont	1:46ce1e16c870	2189	fs->id = ++Fsid; /* File system mount ID */
emilmont	1:46ce1e16c870	2190	fs->winsect = 0; /* Invalidate sector cache */
emilmont	1:46ce1e16c870	2191	fs->wflag = 0;
emilmont	1:46ce1e16c870	2192	#if _FS_RPATH
emilmont	1:46ce1e16c870	2193	fs->cdir = 0; /* Current directory (root dir) */
emilmont	1:46ce1e16c870	2194	#endif
emilmont	1:46ce1e16c870	2195	#if _FS_LOCK /* Clear file lock semaphores */
emilmont	1:46ce1e16c870	2196	clear_lock(fs);
emilmont	1:46ce1e16c870	2197	#endif
emilmont	1:46ce1e16c870	2198
emilmont	1:46ce1e16c870	2199	return FR_OK;
emilmont	1:46ce1e16c870	2200	}
emilmont	1:46ce1e16c870	2201
emilmont	1:46ce1e16c870	2202
emilmont	1:46ce1e16c870	2203
emilmont	1:46ce1e16c870	2204
emilmont	1:46ce1e16c870	2205	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2206	/* Check if the file/dir object is valid or not */
emilmont	1:46ce1e16c870	2207	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2208
emilmont	1:46ce1e16c870	2209	static
emilmont	1:46ce1e16c870	2210	FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
emilmont	1:46ce1e16c870	2211	void* obj /* Pointer to the object FIL/DIR to check validity */
emilmont	1:46ce1e16c870	2212	)
emilmont	1:46ce1e16c870	2213	{
emilmont	1:46ce1e16c870	2214	FIL *fil;
emilmont	1:46ce1e16c870	2215
emilmont	1:46ce1e16c870	2216
emilmont	1:46ce1e16c870	2217	fil = (FIL)obj; / Assuming offset of fs and id in the FIL/DIR is identical */
emilmont	1:46ce1e16c870	2218	if (!fil->fs \|\| !fil->fs->fs_type \|\| fil->fs->id != fil->id)
emilmont	1:46ce1e16c870	2219	return FR_INVALID_OBJECT;
emilmont	1:46ce1e16c870	2220
emilmont	1:46ce1e16c870	2221	ENTER_FF(fil->fs); /* Lock file system */
emilmont	1:46ce1e16c870	2222
emilmont	1:46ce1e16c870	2223	if (disk_status(fil->fs->drv) & STA_NOINIT)
emilmont	1:46ce1e16c870	2224	return FR_NOT_READY;
emilmont	1:46ce1e16c870	2225
emilmont	1:46ce1e16c870	2226	return FR_OK;
emilmont	1:46ce1e16c870	2227	}
emilmont	1:46ce1e16c870	2228
emilmont	1:46ce1e16c870	2229
emilmont	1:46ce1e16c870	2230
emilmont	1:46ce1e16c870	2231
emilmont	1:46ce1e16c870	2232	/*--------------------------------------------------------------------------
emilmont	1:46ce1e16c870	2233
emilmont	1:46ce1e16c870	2234	Public Functions
emilmont	1:46ce1e16c870	2235
emilmont	1:46ce1e16c870	2236	--------------------------------------------------------------------------*/
emilmont	1:46ce1e16c870	2237
emilmont	1:46ce1e16c870	2238
emilmont	1:46ce1e16c870	2239
emilmont	1:46ce1e16c870	2240	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2241	/* Mount/Unmount a Logical Drive */
emilmont	1:46ce1e16c870	2242	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2243
emilmont	1:46ce1e16c870	2244	FRESULT f_mount (
emilmont	1:46ce1e16c870	2245	BYTE vol, /* Logical drive number to be mounted/unmounted */
emilmont	1:46ce1e16c870	2246	FATFS fs / Pointer to new file system object (NULL for unmount)*/
emilmont	1:46ce1e16c870	2247	)
emilmont	1:46ce1e16c870	2248	{
emilmont	1:46ce1e16c870	2249	FATFS *rfs;
emilmont	1:46ce1e16c870	2250
emilmont	1:46ce1e16c870	2251
emilmont	1:46ce1e16c870	2252	if (vol >= _VOLUMES) /* Check if the drive number is valid */
emilmont	1:46ce1e16c870	2253	return FR_INVALID_DRIVE;
emilmont	1:46ce1e16c870	2254	rfs = FatFs[vol]; /* Get current fs object */
emilmont	1:46ce1e16c870	2255
emilmont	1:46ce1e16c870	2256	if (rfs) {
emilmont	1:46ce1e16c870	2257	#if _FS_LOCK
emilmont	1:46ce1e16c870	2258	clear_lock(rfs);
emilmont	1:46ce1e16c870	2259	#endif
emilmont	1:46ce1e16c870	2260	#if _FS_REENTRANT /* Discard sync object of the current volume */
emilmont	1:46ce1e16c870	2261	if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
emilmont	1:46ce1e16c870	2262	#endif
emilmont	1:46ce1e16c870	2263	rfs->fs_type = 0; /* Clear old fs object */
emilmont	1:46ce1e16c870	2264	}
emilmont	1:46ce1e16c870	2265
emilmont	1:46ce1e16c870	2266	if (fs) {
emilmont	1:46ce1e16c870	2267	fs->fs_type = 0; /* Clear new fs object */
emilmont	1:46ce1e16c870	2268	#if _FS_REENTRANT /* Create sync object for the new volume */
emilmont	1:46ce1e16c870	2269	if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
emilmont	1:46ce1e16c870	2270	#endif
emilmont	1:46ce1e16c870	2271	}
emilmont	1:46ce1e16c870	2272	FatFs[vol] = fs; /* Register new fs object */
emilmont	1:46ce1e16c870	2273
emilmont	1:46ce1e16c870	2274	return FR_OK;
emilmont	1:46ce1e16c870	2275	}
emilmont	1:46ce1e16c870	2276
emilmont	1:46ce1e16c870	2277
emilmont	1:46ce1e16c870	2278
emilmont	1:46ce1e16c870	2279
emilmont	1:46ce1e16c870	2280	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2281	/* Open or Create a File */
emilmont	1:46ce1e16c870	2282	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2283
emilmont	1:46ce1e16c870	2284	FRESULT f_open (
emilmont	1:46ce1e16c870	2285	FIL fp, / Pointer to the blank file object */
emilmont	1:46ce1e16c870	2286	const TCHAR path, / Pointer to the file name */
emilmont	1:46ce1e16c870	2287	BYTE mode /* Access mode and file open mode flags */
emilmont	1:46ce1e16c870	2288	)
emilmont	1:46ce1e16c870	2289	{
emilmont	1:46ce1e16c870	2290	FRESULT res;
emilmont	1:46ce1e16c870	2291	FATFS_DIR dj;
emilmont	1:46ce1e16c870	2292	BYTE *dir;
emilmont	1:46ce1e16c870	2293	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	2294
emilmont	1:46ce1e16c870	2295
emilmont	1:46ce1e16c870	2296	if (!fp) return FR_INVALID_OBJECT;
emilmont	1:46ce1e16c870	2297	fp->fs = 0; /* Clear file object */
emilmont	1:46ce1e16c870	2298
emilmont	1:46ce1e16c870	2299	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2300	mode &= FA_READ \| FA_WRITE \| FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW;
emilmont	1:46ce1e16c870	2301	res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
emilmont	1:46ce1e16c870	2302	#else
emilmont	1:46ce1e16c870	2303	mode &= FA_READ;
emilmont	1:46ce1e16c870	2304	res = chk_mounted(&path, &dj.fs, 0);
emilmont	1:46ce1e16c870	2305	#endif
emilmont	1:46ce1e16c870	2306	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2307	INIT_BUF(dj);
emilmont	1:46ce1e16c870	2308	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	2309	dir = dj.dir;
emilmont	1:46ce1e16c870	2310	#if !_FS_READONLY /* R/W configuration */
emilmont	1:46ce1e16c870	2311	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2312	if (!dir) /* Current dir itself */
emilmont	1:46ce1e16c870	2313	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	2314	#if _FS_LOCK
emilmont	1:46ce1e16c870	2315	else
emilmont	1:46ce1e16c870	2316	res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
emilmont	1:46ce1e16c870	2317	#endif
emilmont	1:46ce1e16c870	2318	}
emilmont	1:46ce1e16c870	2319	/* Create or Open a file */
emilmont	1:46ce1e16c870	2320	if (mode & (FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW)) {
emilmont	1:46ce1e16c870	2321	DWORD dw, cl;
emilmont	1:46ce1e16c870	2322
emilmont	1:46ce1e16c870	2323	if (res != FR_OK) { /* No file, create new */
emilmont	1:46ce1e16c870	2324	if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
emilmont	1:46ce1e16c870	2325	#if _FS_LOCK
emilmont	1:46ce1e16c870	2326	res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
emilmont	1:46ce1e16c870	2327	#else
emilmont	1:46ce1e16c870	2328	res = dir_register(&dj);
emilmont	1:46ce1e16c870	2329	#endif
emilmont	1:46ce1e16c870	2330	mode \|= FA_CREATE_ALWAYS; /* File is created */
emilmont	1:46ce1e16c870	2331	dir = dj.dir; /* New entry */
emilmont	1:46ce1e16c870	2332	}
emilmont	1:46ce1e16c870	2333	else { /* Any object is already existing */
emilmont	1:46ce1e16c870	2334	if (dir[DIR_Attr] & (AM_RDO \| AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
emilmont	1:46ce1e16c870	2335	res = FR_DENIED;
emilmont	1:46ce1e16c870	2336	} else {
emilmont	1:46ce1e16c870	2337	if (mode & FA_CREATE_NEW) /* Cannot create as new file */
emilmont	1:46ce1e16c870	2338	res = FR_EXIST;
emilmont	1:46ce1e16c870	2339	}
emilmont	1:46ce1e16c870	2340	}
emilmont	1:46ce1e16c870	2341	if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
emilmont	1:46ce1e16c870	2342	dw = get_fattime(); /* Created time */
emilmont	1:46ce1e16c870	2343	ST_DWORD(dir+DIR_CrtTime, dw);
emilmont	1:46ce1e16c870	2344	dir[DIR_Attr] = 0; /* Reset attribute */
emilmont	1:46ce1e16c870	2345	ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
emilmont	1:46ce1e16c870	2346	cl = ld_clust(dj.fs, dir); /* Get start cluster */
emilmont	1:46ce1e16c870	2347	st_clust(dir, 0); /* cluster = 0 */
emilmont	1:46ce1e16c870	2348	dj.fs->wflag = 1;
emilmont	1:46ce1e16c870	2349	if (cl) { /* Remove the cluster chain if exist */
emilmont	1:46ce1e16c870	2350	dw = dj.fs->winsect;
emilmont	1:46ce1e16c870	2351	res = remove_chain(dj.fs, cl);
emilmont	1:46ce1e16c870	2352	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2353	dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
emilmont	1:46ce1e16c870	2354	res = move_window(dj.fs, dw);
emilmont	1:46ce1e16c870	2355	}
emilmont	1:46ce1e16c870	2356	}
emilmont	1:46ce1e16c870	2357	}
emilmont	1:46ce1e16c870	2358	}
emilmont	1:46ce1e16c870	2359	else { /* Open an existing file */
emilmont	1:46ce1e16c870	2360	if (res == FR_OK) { /* Follow succeeded */
emilmont	1:46ce1e16c870	2361	if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
emilmont	1:46ce1e16c870	2362	res = FR_NO_FILE;
emilmont	1:46ce1e16c870	2363	} else {
emilmont	1:46ce1e16c870	2364	if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
emilmont	1:46ce1e16c870	2365	res = FR_DENIED;
emilmont	1:46ce1e16c870	2366	}
emilmont	1:46ce1e16c870	2367	}
emilmont	1:46ce1e16c870	2368	}
emilmont	1:46ce1e16c870	2369	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2370	if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
emilmont	1:46ce1e16c870	2371	mode \|= FA__WRITTEN;
emilmont	1:46ce1e16c870	2372	fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
emilmont	1:46ce1e16c870	2373	fp->dir_ptr = dir;
emilmont	1:46ce1e16c870	2374	#if _FS_LOCK
emilmont	1:46ce1e16c870	2375	fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
emilmont	1:46ce1e16c870	2376	if (!fp->lockid) res = FR_INT_ERR;
emilmont	1:46ce1e16c870	2377	#endif
emilmont	1:46ce1e16c870	2378	}
emilmont	1:46ce1e16c870	2379
emilmont	1:46ce1e16c870	2380	#else /* R/O configuration */
emilmont	1:46ce1e16c870	2381	if (res == FR_OK) { /* Follow succeeded */
emilmont	1:46ce1e16c870	2382	dir = dj.dir;
emilmont	1:46ce1e16c870	2383	if (!dir) { /* Current dir itself */
emilmont	1:46ce1e16c870	2384	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	2385	} else {
emilmont	1:46ce1e16c870	2386	if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
emilmont	1:46ce1e16c870	2387	res = FR_NO_FILE;
emilmont	1:46ce1e16c870	2388	}
emilmont	1:46ce1e16c870	2389	}
emilmont	1:46ce1e16c870	2390	#endif
emilmont	1:46ce1e16c870	2391	FREE_BUF();
emilmont	1:46ce1e16c870	2392
emilmont	1:46ce1e16c870	2393	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2394	fp->flag = mode; /* File access mode */
emilmont	1:46ce1e16c870	2395	fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
emilmont	1:46ce1e16c870	2396	fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
emilmont	1:46ce1e16c870	2397	fp->fptr = 0; /* File pointer */
emilmont	1:46ce1e16c870	2398	fp->dsect = 0;
emilmont	1:46ce1e16c870	2399	#if _USE_FASTSEEK
emilmont	1:46ce1e16c870	2400	fp->cltbl = 0; /* Normal seek mode */
emilmont	1:46ce1e16c870	2401	#endif
emilmont	1:46ce1e16c870	2402	fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
emilmont	1:46ce1e16c870	2403	}
emilmont	1:46ce1e16c870	2404	}
emilmont	1:46ce1e16c870	2405
emilmont	1:46ce1e16c870	2406	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	2407	}
emilmont	1:46ce1e16c870	2408
emilmont	1:46ce1e16c870	2409
emilmont	1:46ce1e16c870	2410
emilmont	1:46ce1e16c870	2411
emilmont	1:46ce1e16c870	2412	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2413	/* Read File */
emilmont	1:46ce1e16c870	2414	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2415
emilmont	1:46ce1e16c870	2416	FRESULT f_read (
emilmont	1:46ce1e16c870	2417	FIL fp, / Pointer to the file object */
emilmont	1:46ce1e16c870	2418	void buff, / Pointer to data buffer */
emilmont	1:46ce1e16c870	2419	UINT btr, /* Number of bytes to read */
emilmont	1:46ce1e16c870	2420	UINT br / Pointer to number of bytes read */
emilmont	1:46ce1e16c870	2421	)
emilmont	1:46ce1e16c870	2422	{
emilmont	1:46ce1e16c870	2423	FRESULT res;
emilmont	1:46ce1e16c870	2424	DWORD clst, sect, remain;
emilmont	1:46ce1e16c870	2425	UINT rcnt, cc;
emilmont	1:46ce1e16c870	2426	BYTE csect, rbuff = (BYTE )buff;
emilmont	1:46ce1e16c870	2427
emilmont	1:46ce1e16c870	2428
emilmont	1:46ce1e16c870	2429	br = 0; / Clear read byte counter */
emilmont	1:46ce1e16c870	2430
emilmont	1:46ce1e16c870	2431	res = validate(fp); /* Check validity */
emilmont	1:46ce1e16c870	2432	if (res != FR_OK) LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	2433	if (fp->flag & FA__ERROR) /* Aborted file? */
emilmont	1:46ce1e16c870	2434	LEAVE_FF(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2435	if (!(fp->flag & FA_READ)) /* Check access mode */
emilmont	1:46ce1e16c870	2436	LEAVE_FF(fp->fs, FR_DENIED);
emilmont	1:46ce1e16c870	2437	remain = fp->fsize - fp->fptr;
emilmont	1:46ce1e16c870	2438	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
emilmont	1:46ce1e16c870	2439
emilmont	1:46ce1e16c870	2440	for ( ; btr; /* Repeat until all data read */
emilmont	1:46ce1e16c870	2441	rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
emilmont	1:46ce1e16c870	2442	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
emilmont	1:46ce1e16c870	2443	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
emilmont	1:46ce1e16c870	2444	if (!csect) { /* On the cluster boundary? */
emilmont	1:46ce1e16c870	2445	if (fp->fptr == 0) { /* On the top of the file? */
emilmont	1:46ce1e16c870	2446	clst = fp->sclust; /* Follow from the origin */
emilmont	1:46ce1e16c870	2447	} else { /* Middle or end of the file */
emilmont	1:46ce1e16c870	2448	#if _USE_FASTSEEK
emilmont	1:46ce1e16c870	2449	if (fp->cltbl)
emilmont	1:46ce1e16c870	2450	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
emilmont	1:46ce1e16c870	2451	else
emilmont	1:46ce1e16c870	2452	#endif
emilmont	1:46ce1e16c870	2453	clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
emilmont	1:46ce1e16c870	2454	}
emilmont	1:46ce1e16c870	2455	if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2456	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2457	fp->clust = clst; /* Update current cluster */
emilmont	1:46ce1e16c870	2458	}
emilmont	1:46ce1e16c870	2459	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
emilmont	1:46ce1e16c870	2460	if (!sect) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2461	sect += csect;
emilmont	1:46ce1e16c870	2462	cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
emilmont	1:46ce1e16c870	2463	if (cc) { /* Read maximum contiguous sectors directly */
emilmont	1:46ce1e16c870	2464	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
emilmont	1:46ce1e16c870	2465	cc = fp->fs->csize - csect;
emilmont	1:46ce1e16c870	2466	if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
emilmont	1:46ce1e16c870	2467	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2468	#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
emilmont	1:46ce1e16c870	2469	#if _FS_TINY
emilmont	1:46ce1e16c870	2470	if (fp->fs->wflag && fp->fs->winsect - sect < cc)
emilmont	1:46ce1e16c870	2471	mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
emilmont	1:46ce1e16c870	2472	#else
emilmont	1:46ce1e16c870	2473	if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
emilmont	1:46ce1e16c870	2474	mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
emilmont	1:46ce1e16c870	2475	#endif
emilmont	1:46ce1e16c870	2476	#endif
emilmont	1:46ce1e16c870	2477	rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
emilmont	1:46ce1e16c870	2478	continue;
emilmont	1:46ce1e16c870	2479	}
emilmont	1:46ce1e16c870	2480	#if !_FS_TINY
emilmont	1:46ce1e16c870	2481	if (fp->dsect != sect) { /* Load data sector if not in cache */
emilmont	1:46ce1e16c870	2482	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2483	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
emilmont	1:46ce1e16c870	2484	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2485	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2486	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2487	}
emilmont	1:46ce1e16c870	2488	#endif
emilmont	1:46ce1e16c870	2489	if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
emilmont	1:46ce1e16c870	2490	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2491	}
emilmont	1:46ce1e16c870	2492	#endif
emilmont	1:46ce1e16c870	2493	fp->dsect = sect;
emilmont	1:46ce1e16c870	2494	}
emilmont	1:46ce1e16c870	2495	rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
emilmont	1:46ce1e16c870	2496	if (rcnt > btr) rcnt = btr;
emilmont	1:46ce1e16c870	2497	#if _FS_TINY
emilmont	1:46ce1e16c870	2498	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
emilmont	1:46ce1e16c870	2499	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2500	mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
emilmont	1:46ce1e16c870	2501	#else
emilmont	1:46ce1e16c870	2502	mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
emilmont	1:46ce1e16c870	2503	#endif
emilmont	1:46ce1e16c870	2504	}
emilmont	1:46ce1e16c870	2505
emilmont	1:46ce1e16c870	2506	LEAVE_FF(fp->fs, FR_OK);
emilmont	1:46ce1e16c870	2507	}
emilmont	1:46ce1e16c870	2508
emilmont	1:46ce1e16c870	2509
emilmont	1:46ce1e16c870	2510
emilmont	1:46ce1e16c870	2511
emilmont	1:46ce1e16c870	2512	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2513	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2514	/* Write File */
emilmont	1:46ce1e16c870	2515	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2516
emilmont	1:46ce1e16c870	2517	FRESULT f_write (
emilmont	1:46ce1e16c870	2518	FIL fp, / Pointer to the file object */
emilmont	1:46ce1e16c870	2519	const void buff, / Pointer to the data to be written */
emilmont	1:46ce1e16c870	2520	UINT btw, /* Number of bytes to write */
emilmont	1:46ce1e16c870	2521	UINT bw / Pointer to number of bytes written */
emilmont	1:46ce1e16c870	2522	)
emilmont	1:46ce1e16c870	2523	{
emilmont	1:46ce1e16c870	2524	FRESULT res;
emilmont	1:46ce1e16c870	2525	DWORD clst, sect;
emilmont	1:46ce1e16c870	2526	UINT wcnt, cc;
emilmont	1:46ce1e16c870	2527	const BYTE wbuff = (const BYTE )buff;
emilmont	1:46ce1e16c870	2528	BYTE csect;
emilmont	1:46ce1e16c870	2529
emilmont	1:46ce1e16c870	2530
emilmont	1:46ce1e16c870	2531	bw = 0; / Clear write byte counter */
emilmont	1:46ce1e16c870	2532
emilmont	1:46ce1e16c870	2533	res = validate(fp); /* Check validity */
emilmont	1:46ce1e16c870	2534	if (res != FR_OK) LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	2535	if (fp->flag & FA__ERROR) /* Aborted file? */
emilmont	1:46ce1e16c870	2536	LEAVE_FF(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2537	if (!(fp->flag & FA_WRITE)) /* Check access mode */
emilmont	1:46ce1e16c870	2538	LEAVE_FF(fp->fs, FR_DENIED);
emilmont	1:46ce1e16c870	2539	if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
emilmont	1:46ce1e16c870	2540
emilmont	1:46ce1e16c870	2541	for ( ; btw; /* Repeat until all data written */
emilmont	1:46ce1e16c870	2542	wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
emilmont	1:46ce1e16c870	2543	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
emilmont	1:46ce1e16c870	2544	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
emilmont	1:46ce1e16c870	2545	if (!csect) { /* On the cluster boundary? */
emilmont	1:46ce1e16c870	2546	if (fp->fptr == 0) { /* On the top of the file? */
emilmont	1:46ce1e16c870	2547	clst = fp->sclust; /* Follow from the origin */
emilmont	1:46ce1e16c870	2548	if (clst == 0) /* When no cluster is allocated, */
emilmont	1:46ce1e16c870	2549	fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
emilmont	1:46ce1e16c870	2550	} else { /* Middle or end of the file */
emilmont	1:46ce1e16c870	2551	#if _USE_FASTSEEK
emilmont	1:46ce1e16c870	2552	if (fp->cltbl)
emilmont	1:46ce1e16c870	2553	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
emilmont	1:46ce1e16c870	2554	else
emilmont	1:46ce1e16c870	2555	#endif
emilmont	1:46ce1e16c870	2556	clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
emilmont	1:46ce1e16c870	2557	}
emilmont	1:46ce1e16c870	2558	if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
emilmont	1:46ce1e16c870	2559	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2560	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2561	fp->clust = clst; /* Update current cluster */
emilmont	1:46ce1e16c870	2562	}
emilmont	1:46ce1e16c870	2563	#if _FS_TINY
emilmont	1:46ce1e16c870	2564	if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
emilmont	1:46ce1e16c870	2565	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2566	#else
emilmont	1:46ce1e16c870	2567	if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
emilmont	1:46ce1e16c870	2568	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2569	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2570	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2571	}
emilmont	1:46ce1e16c870	2572	#endif
emilmont	1:46ce1e16c870	2573	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
emilmont	1:46ce1e16c870	2574	if (!sect) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2575	sect += csect;
emilmont	1:46ce1e16c870	2576	cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
emilmont	1:46ce1e16c870	2577	if (cc) { /* Write maximum contiguous sectors directly */
emilmont	1:46ce1e16c870	2578	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
emilmont	1:46ce1e16c870	2579	cc = fp->fs->csize - csect;
emilmont	1:46ce1e16c870	2580	if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
emilmont	1:46ce1e16c870	2581	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2582	#if _FS_TINY
emilmont	1:46ce1e16c870	2583	if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
emilmont	1:46ce1e16c870	2584	mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
emilmont	1:46ce1e16c870	2585	fp->fs->wflag = 0;
emilmont	1:46ce1e16c870	2586	}
emilmont	1:46ce1e16c870	2587	#else
emilmont	1:46ce1e16c870	2588	if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
emilmont	1:46ce1e16c870	2589	mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
emilmont	1:46ce1e16c870	2590	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2591	}
emilmont	1:46ce1e16c870	2592	#endif
emilmont	1:46ce1e16c870	2593	wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
emilmont	1:46ce1e16c870	2594	continue;
emilmont	1:46ce1e16c870	2595	}
emilmont	1:46ce1e16c870	2596	#if _FS_TINY
emilmont	1:46ce1e16c870	2597	if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
emilmont	1:46ce1e16c870	2598	if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2599	fp->fs->winsect = sect;
emilmont	1:46ce1e16c870	2600	}
emilmont	1:46ce1e16c870	2601	#else
emilmont	1:46ce1e16c870	2602	if (fp->dsect != sect) { /* Fill sector cache with file data */
emilmont	1:46ce1e16c870	2603	if (fp->fptr < fp->fsize &&
emilmont	1:46ce1e16c870	2604	disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2605	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2606	}
emilmont	1:46ce1e16c870	2607	#endif
emilmont	1:46ce1e16c870	2608	fp->dsect = sect;
emilmont	1:46ce1e16c870	2609	}
emilmont	1:46ce1e16c870	2610	wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
emilmont	1:46ce1e16c870	2611	if (wcnt > btw) wcnt = btw;
emilmont	1:46ce1e16c870	2612	#if _FS_TINY
emilmont	1:46ce1e16c870	2613	if (move_window(fp->fs, fp->dsect)) /* Move sector window */
emilmont	1:46ce1e16c870	2614	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2615	mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
emilmont	1:46ce1e16c870	2616	fp->fs->wflag = 1;
emilmont	1:46ce1e16c870	2617	#else
emilmont	1:46ce1e16c870	2618	mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
emilmont	1:46ce1e16c870	2619	fp->flag \|= FA__DIRTY;
emilmont	1:46ce1e16c870	2620	#endif
emilmont	1:46ce1e16c870	2621	}
emilmont	1:46ce1e16c870	2622
emilmont	1:46ce1e16c870	2623	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
emilmont	1:46ce1e16c870	2624	fp->flag \|= FA__WRITTEN; /* Set file change flag */
emilmont	1:46ce1e16c870	2625
emilmont	1:46ce1e16c870	2626	LEAVE_FF(fp->fs, FR_OK);
emilmont	1:46ce1e16c870	2627	}
emilmont	1:46ce1e16c870	2628
emilmont	1:46ce1e16c870	2629
emilmont	1:46ce1e16c870	2630
emilmont	1:46ce1e16c870	2631
emilmont	1:46ce1e16c870	2632	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2633	/* Synchronize the File Object */
emilmont	1:46ce1e16c870	2634	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2635
emilmont	1:46ce1e16c870	2636	FRESULT f_sync (
emilmont	1:46ce1e16c870	2637	FIL fp / Pointer to the file object */
emilmont	1:46ce1e16c870	2638	)
emilmont	1:46ce1e16c870	2639	{
emilmont	1:46ce1e16c870	2640	FRESULT res;
emilmont	1:46ce1e16c870	2641	DWORD tim;
emilmont	1:46ce1e16c870	2642	BYTE *dir;
emilmont	1:46ce1e16c870	2643
emilmont	1:46ce1e16c870	2644
emilmont	1:46ce1e16c870	2645	res = validate(fp); /* Check validity of the object */
emilmont	1:46ce1e16c870	2646	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2647	if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
emilmont	1:46ce1e16c870	2648	#if !_FS_TINY /* Write-back dirty buffer */
emilmont	1:46ce1e16c870	2649	if (fp->flag & FA__DIRTY) {
emilmont	1:46ce1e16c870	2650	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2651	LEAVE_FF(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2652	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2653	}
emilmont	1:46ce1e16c870	2654	#endif
emilmont	1:46ce1e16c870	2655	/* Update the directory entry */
emilmont	1:46ce1e16c870	2656	res = move_window(fp->fs, fp->dir_sect);
emilmont	1:46ce1e16c870	2657	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2658	dir = fp->dir_ptr;
emilmont	1:46ce1e16c870	2659	dir[DIR_Attr] \|= AM_ARC; /* Set archive bit */
emilmont	1:46ce1e16c870	2660	ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
emilmont	1:46ce1e16c870	2661	st_clust(dir, fp->sclust); /* Update start cluster */
emilmont	1:46ce1e16c870	2662	tim = get_fattime(); /* Update updated time */
emilmont	1:46ce1e16c870	2663	ST_DWORD(dir+DIR_WrtTime, tim);
emilmont	1:46ce1e16c870	2664	ST_WORD(dir+DIR_LstAccDate, 0);
emilmont	1:46ce1e16c870	2665	fp->flag &= ~FA__WRITTEN;
emilmont	1:46ce1e16c870	2666	fp->fs->wflag = 1;
emilmont	1:46ce1e16c870	2667	res = sync(fp->fs);
emilmont	1:46ce1e16c870	2668	}
emilmont	1:46ce1e16c870	2669	}
emilmont	1:46ce1e16c870	2670	}
emilmont	1:46ce1e16c870	2671
emilmont	1:46ce1e16c870	2672	LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	2673	}
emilmont	1:46ce1e16c870	2674
emilmont	1:46ce1e16c870	2675	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	2676
emilmont	1:46ce1e16c870	2677
emilmont	1:46ce1e16c870	2678
emilmont	1:46ce1e16c870	2679
emilmont	1:46ce1e16c870	2680	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2681	/* Close File */
emilmont	1:46ce1e16c870	2682	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2683
emilmont	1:46ce1e16c870	2684	FRESULT f_close (
emilmont	1:46ce1e16c870	2685	FIL fp / Pointer to the file object to be closed */
emilmont	1:46ce1e16c870	2686	)
emilmont	1:46ce1e16c870	2687	{
emilmont	1:46ce1e16c870	2688	FRESULT res;
emilmont	1:46ce1e16c870	2689
emilmont	1:46ce1e16c870	2690
emilmont	1:46ce1e16c870	2691	#if _FS_READONLY
emilmont	1:46ce1e16c870	2692	res = validate(fp);
emilmont	1:46ce1e16c870	2693	{
emilmont	1:46ce1e16c870	2694	#if _FS_REENTRANT
emilmont	1:46ce1e16c870	2695	FATFS *fs = fp->fs;
emilmont	1:46ce1e16c870	2696	#endif
emilmont	1:46ce1e16c870	2697	if (res == FR_OK) fp->fs = 0; /* Discard file object */
emilmont	1:46ce1e16c870	2698	LEAVE_FF(fs, res);
emilmont	1:46ce1e16c870	2699	}
emilmont	1:46ce1e16c870	2700	#else
emilmont	1:46ce1e16c870	2701	res = f_sync(fp); /* Flush cached data */
emilmont	1:46ce1e16c870	2702	#if _FS_LOCK
emilmont	1:46ce1e16c870	2703	if (res == FR_OK) { /* Decrement open counter */
emilmont	1:46ce1e16c870	2704	#if _FS_REENTRANT
emilmont	1:46ce1e16c870	2705	FATFS *fs = fp->fs;;
emilmont	1:46ce1e16c870	2706	res = validate(fp);
emilmont	1:46ce1e16c870	2707	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2708	res = dec_lock(fp->lockid);
emilmont	1:46ce1e16c870	2709	unlock_fs(fs, FR_OK);
emilmont	1:46ce1e16c870	2710	}
emilmont	1:46ce1e16c870	2711	#else
emilmont	1:46ce1e16c870	2712	res = dec_lock(fp->lockid);
emilmont	1:46ce1e16c870	2713	#endif
emilmont	1:46ce1e16c870	2714	}
emilmont	1:46ce1e16c870	2715	#endif
emilmont	1:46ce1e16c870	2716	if (res == FR_OK) fp->fs = 0; /* Discard file object */
emilmont	1:46ce1e16c870	2717	return res;
emilmont	1:46ce1e16c870	2718	#endif
emilmont	1:46ce1e16c870	2719	}
emilmont	1:46ce1e16c870	2720
emilmont	1:46ce1e16c870	2721
emilmont	1:46ce1e16c870	2722
emilmont	1:46ce1e16c870	2723
emilmont	1:46ce1e16c870	2724	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2725	/* Current Drive/Directory Handlings */
emilmont	1:46ce1e16c870	2726	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2727
emilmont	1:46ce1e16c870	2728	#if _FS_RPATH >= 1
emilmont	1:46ce1e16c870	2729
emilmont	1:46ce1e16c870	2730	FRESULT f_chdrive (
emilmont	1:46ce1e16c870	2731	BYTE drv /* Drive number */
emilmont	1:46ce1e16c870	2732	)
emilmont	1:46ce1e16c870	2733	{
emilmont	1:46ce1e16c870	2734	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
emilmont	1:46ce1e16c870	2735
emilmont	1:46ce1e16c870	2736	CurrVol = drv;
emilmont	1:46ce1e16c870	2737
emilmont	1:46ce1e16c870	2738	return FR_OK;
emilmont	1:46ce1e16c870	2739	}
emilmont	1:46ce1e16c870	2740
emilmont	1:46ce1e16c870	2741
emilmont	1:46ce1e16c870	2742
emilmont	1:46ce1e16c870	2743	FRESULT f_chdir (
emilmont	1:46ce1e16c870	2744	const TCHAR path / Pointer to the directory path */
emilmont	1:46ce1e16c870	2745	)
emilmont	1:46ce1e16c870	2746	{
emilmont	1:46ce1e16c870	2747	FRESULT res;
emilmont	1:46ce1e16c870	2748	DIR dj;
emilmont	1:46ce1e16c870	2749	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	2750
emilmont	1:46ce1e16c870	2751
emilmont	1:46ce1e16c870	2752	res = chk_mounted(&path, &dj.fs, 0);
emilmont	1:46ce1e16c870	2753	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2754	INIT_BUF(dj);
emilmont	1:46ce1e16c870	2755	res = follow_path(&dj, path); /* Follow the path */
emilmont	1:46ce1e16c870	2756	FREE_BUF();
emilmont	1:46ce1e16c870	2757	if (res == FR_OK) { /* Follow completed */
emilmont	1:46ce1e16c870	2758	if (!dj.dir) {
emilmont	1:46ce1e16c870	2759	dj.fs->cdir = dj.sclust; /* Start directory itself */
emilmont	1:46ce1e16c870	2760	} else {
emilmont	1:46ce1e16c870	2761	if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
emilmont	1:46ce1e16c870	2762	dj.fs->cdir = ld_clust(dj.fs, dj.dir);
emilmont	1:46ce1e16c870	2763	else
emilmont	1:46ce1e16c870	2764	res = FR_NO_PATH; /* Reached but a file */
emilmont	1:46ce1e16c870	2765	}
emilmont	1:46ce1e16c870	2766	}
emilmont	1:46ce1e16c870	2767	if (res == FR_NO_FILE) res = FR_NO_PATH;
emilmont	1:46ce1e16c870	2768	}
emilmont	1:46ce1e16c870	2769
emilmont	1:46ce1e16c870	2770	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	2771	}
emilmont	1:46ce1e16c870	2772
emilmont	1:46ce1e16c870	2773
emilmont	1:46ce1e16c870	2774	#if _FS_RPATH >= 2
emilmont	1:46ce1e16c870	2775	FRESULT f_getcwd (
emilmont	1:46ce1e16c870	2776	TCHAR path, / Pointer to the directory path */
emilmont	1:46ce1e16c870	2777	UINT sz_path /* Size of path */
emilmont	1:46ce1e16c870	2778	)
emilmont	1:46ce1e16c870	2779	{
emilmont	1:46ce1e16c870	2780	FRESULT res;
emilmont	1:46ce1e16c870	2781	DIR dj;
emilmont	1:46ce1e16c870	2782	UINT i, n;
emilmont	1:46ce1e16c870	2783	DWORD ccl;
emilmont	1:46ce1e16c870	2784	TCHAR *tp;
emilmont	1:46ce1e16c870	2785	FILINFO fno;
emilmont	1:46ce1e16c870	2786	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	2787
emilmont	1:46ce1e16c870	2788
emilmont	1:46ce1e16c870	2789	*path = 0;
emilmont	1:46ce1e16c870	2790	res = chk_mounted((const TCHAR*)&path, &dj.fs, 0); / Get current volume */
emilmont	1:46ce1e16c870	2791	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2792	INIT_BUF(dj);
emilmont	1:46ce1e16c870	2793	i = sz_path; /* Bottom of buffer (dir stack base) */
emilmont	1:46ce1e16c870	2794	dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
emilmont	1:46ce1e16c870	2795	while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
emilmont	1:46ce1e16c870	2796	res = dir_sdi(&dj, 1); /* Get parent dir */
emilmont	1:46ce1e16c870	2797	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	2798	res = dir_read(&dj);
emilmont	1:46ce1e16c870	2799	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	2800	dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent dir */
emilmont	1:46ce1e16c870	2801	res = dir_sdi(&dj, 0);
emilmont	1:46ce1e16c870	2802	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	2803	do { /* Find the entry links to the child dir */
emilmont	1:46ce1e16c870	2804	res = dir_read(&dj);
emilmont	1:46ce1e16c870	2805	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	2806	if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
emilmont	1:46ce1e16c870	2807	res = dir_next(&dj, 0);
emilmont	1:46ce1e16c870	2808	} while (res == FR_OK);
emilmont	1:46ce1e16c870	2809	if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
emilmont	1:46ce1e16c870	2810	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	2811	#if _USE_LFN
emilmont	1:46ce1e16c870	2812	fno.lfname = path;
emilmont	1:46ce1e16c870	2813	fno.lfsize = i;
emilmont	1:46ce1e16c870	2814	#endif
emilmont	1:46ce1e16c870	2815	get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
emilmont	1:46ce1e16c870	2816	tp = fno.fname;
emilmont	1:46ce1e16c870	2817	if (_USE_LFN && *path) tp = path;
emilmont	1:46ce1e16c870	2818	for (n = 0; tp[n]; n++) ;
emilmont	1:46ce1e16c870	2819	if (i < n + 3) {
emilmont	1:46ce1e16c870	2820	res = FR_NOT_ENOUGH_CORE; break;
emilmont	1:46ce1e16c870	2821	}
emilmont	1:46ce1e16c870	2822	while (n) path[--i] = tp[--n];
emilmont	1:46ce1e16c870	2823	path[--i] = '/';
emilmont	1:46ce1e16c870	2824	}
emilmont	1:46ce1e16c870	2825	tp = path;
emilmont	1:46ce1e16c870	2826	if (res == FR_OK) {
emilmont	1:46ce1e16c870	2827	tp++ = '0' + CurrVol; / Put drive number */
emilmont	1:46ce1e16c870	2828	*tp++ = ':';
emilmont	1:46ce1e16c870	2829	if (i == sz_path) { /* Root-dir */
emilmont	1:46ce1e16c870	2830	*tp++ = '/';
emilmont	1:46ce1e16c870	2831	} else { /* Sub-dir */
emilmont	1:46ce1e16c870	2832	do /* Add stacked path str */
emilmont	1:46ce1e16c870	2833	*tp++ = path[i++];
emilmont	1:46ce1e16c870	2834	while (i < sz_path);
emilmont	1:46ce1e16c870	2835	}
emilmont	1:46ce1e16c870	2836	}
emilmont	1:46ce1e16c870	2837	*tp = 0;
emilmont	1:46ce1e16c870	2838	FREE_BUF();
emilmont	1:46ce1e16c870	2839	}
emilmont	1:46ce1e16c870	2840
emilmont	1:46ce1e16c870	2841	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	2842	}
emilmont	1:46ce1e16c870	2843	#endif /* _FS_RPATH >= 2 */
emilmont	1:46ce1e16c870	2844	#endif /* _FS_RPATH >= 1 */
emilmont	1:46ce1e16c870	2845
emilmont	1:46ce1e16c870	2846
emilmont	1:46ce1e16c870	2847
emilmont	1:46ce1e16c870	2848	#if _FS_MINIMIZE <= 2
emilmont	1:46ce1e16c870	2849	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2850	/* Seek File R/W Pointer */
emilmont	1:46ce1e16c870	2851	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	2852
emilmont	1:46ce1e16c870	2853	FRESULT f_lseek (
emilmont	1:46ce1e16c870	2854	FIL fp, / Pointer to the file object */
emilmont	1:46ce1e16c870	2855	DWORD ofs /* File pointer from top of file */
emilmont	1:46ce1e16c870	2856	)
emilmont	1:46ce1e16c870	2857	{
emilmont	1:46ce1e16c870	2858	FRESULT res;
emilmont	1:46ce1e16c870	2859
emilmont	1:46ce1e16c870	2860
emilmont	1:46ce1e16c870	2861	res = validate(fp); /* Check validity of the object */
emilmont	1:46ce1e16c870	2862	if (res != FR_OK) LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	2863	if (fp->flag & FA__ERROR) /* Check abort flag */
emilmont	1:46ce1e16c870	2864	LEAVE_FF(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2865
emilmont	1:46ce1e16c870	2866	#if _USE_FASTSEEK
emilmont	1:46ce1e16c870	2867	if (fp->cltbl) { /* Fast seek */
emilmont	1:46ce1e16c870	2868	DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
emilmont	1:46ce1e16c870	2869
emilmont	1:46ce1e16c870	2870	if (ofs == CREATE_LINKMAP) { /* Create CLMT */
emilmont	1:46ce1e16c870	2871	tbl = fp->cltbl;
emilmont	1:46ce1e16c870	2872	tlen = tbl++; ulen = 2; / Given table size and required table size */
emilmont	1:46ce1e16c870	2873	cl = fp->sclust; /* Top of the chain */
emilmont	1:46ce1e16c870	2874	if (cl) {
emilmont	1:46ce1e16c870	2875	do {
emilmont	1:46ce1e16c870	2876	/* Get a fragment */
emilmont	1:46ce1e16c870	2877	tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
emilmont	1:46ce1e16c870	2878	do {
emilmont	1:46ce1e16c870	2879	pcl = cl; ncl++;
emilmont	1:46ce1e16c870	2880	cl = get_fat(fp->fs, cl);
emilmont	1:46ce1e16c870	2881	if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2882	if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2883	} while (cl == pcl + 1);
emilmont	1:46ce1e16c870	2884	if (ulen <= tlen) { /* Store the length and top of the fragment */
emilmont	1:46ce1e16c870	2885	tbl++ = ncl; tbl++ = tcl;
emilmont	1:46ce1e16c870	2886	}
emilmont	1:46ce1e16c870	2887	} while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
emilmont	1:46ce1e16c870	2888	}
emilmont	1:46ce1e16c870	2889	fp->cltbl = ulen; / Number of items used */
emilmont	1:46ce1e16c870	2890	if (ulen <= tlen)
emilmont	1:46ce1e16c870	2891	tbl = 0; / Terminate table */
emilmont	1:46ce1e16c870	2892	else
emilmont	1:46ce1e16c870	2893	res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
emilmont	1:46ce1e16c870	2894
emilmont	1:46ce1e16c870	2895	} else { /* Fast seek */
emilmont	1:46ce1e16c870	2896	if (ofs > fp->fsize) /* Clip offset at the file size */
emilmont	1:46ce1e16c870	2897	ofs = fp->fsize;
emilmont	1:46ce1e16c870	2898	fp->fptr = ofs; /* Set file pointer */
emilmont	1:46ce1e16c870	2899	if (ofs) {
emilmont	1:46ce1e16c870	2900	fp->clust = clmt_clust(fp, ofs - 1);
emilmont	1:46ce1e16c870	2901	dsc = clust2sect(fp->fs, fp->clust);
emilmont	1:46ce1e16c870	2902	if (!dsc) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2903	dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
emilmont	1:46ce1e16c870	2904	if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
emilmont	1:46ce1e16c870	2905	#if !_FS_TINY
emilmont	1:46ce1e16c870	2906	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2907	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
emilmont	1:46ce1e16c870	2908	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2909	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2910	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2911	}
emilmont	1:46ce1e16c870	2912	#endif
emilmont	1:46ce1e16c870	2913	if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
emilmont	1:46ce1e16c870	2914	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2915	#endif
emilmont	1:46ce1e16c870	2916	fp->dsect = dsc;
emilmont	1:46ce1e16c870	2917	}
emilmont	1:46ce1e16c870	2918	}
emilmont	1:46ce1e16c870	2919	}
emilmont	1:46ce1e16c870	2920	} else
emilmont	1:46ce1e16c870	2921	#endif
emilmont	1:46ce1e16c870	2922
emilmont	1:46ce1e16c870	2923	/* Normal Seek */
emilmont	1:46ce1e16c870	2924	{
emilmont	1:46ce1e16c870	2925	DWORD clst, bcs, nsect, ifptr;
emilmont	1:46ce1e16c870	2926
emilmont	1:46ce1e16c870	2927	if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
emilmont	1:46ce1e16c870	2928	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2929	&& !(fp->flag & FA_WRITE)
emilmont	1:46ce1e16c870	2930	#endif
emilmont	1:46ce1e16c870	2931	) ofs = fp->fsize;
emilmont	1:46ce1e16c870	2932
emilmont	1:46ce1e16c870	2933	ifptr = fp->fptr;
emilmont	1:46ce1e16c870	2934	fp->fptr = nsect = 0;
emilmont	1:46ce1e16c870	2935	if (ofs) {
emilmont	1:46ce1e16c870	2936	bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
emilmont	1:46ce1e16c870	2937	if (ifptr > 0 &&
emilmont	1:46ce1e16c870	2938	(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
emilmont	1:46ce1e16c870	2939	fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
emilmont	1:46ce1e16c870	2940	ofs -= fp->fptr;
emilmont	1:46ce1e16c870	2941	clst = fp->clust;
emilmont	1:46ce1e16c870	2942	} else { /* When seek to back cluster, */
emilmont	1:46ce1e16c870	2943	clst = fp->sclust; /* start from the first cluster */
emilmont	1:46ce1e16c870	2944	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2945	if (clst == 0) { /* If no cluster chain, create a new chain */
emilmont	1:46ce1e16c870	2946	clst = create_chain(fp->fs, 0);
emilmont	1:46ce1e16c870	2947	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2948	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2949	fp->sclust = clst;
emilmont	1:46ce1e16c870	2950	}
emilmont	1:46ce1e16c870	2951	#endif
emilmont	1:46ce1e16c870	2952	fp->clust = clst;
emilmont	1:46ce1e16c870	2953	}
emilmont	1:46ce1e16c870	2954	if (clst != 0) {
emilmont	1:46ce1e16c870	2955	while (ofs > bcs) { /* Cluster following loop */
emilmont	1:46ce1e16c870	2956	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2957	if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
emilmont	1:46ce1e16c870	2958	clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
emilmont	1:46ce1e16c870	2959	if (clst == 0) { /* When disk gets full, clip file size */
emilmont	1:46ce1e16c870	2960	ofs = bcs; break;
emilmont	1:46ce1e16c870	2961	}
emilmont	1:46ce1e16c870	2962	} else
emilmont	1:46ce1e16c870	2963	#endif
emilmont	1:46ce1e16c870	2964	clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
emilmont	1:46ce1e16c870	2965	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2966	if (clst <= 1 \|\| clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2967	fp->clust = clst;
emilmont	1:46ce1e16c870	2968	fp->fptr += bcs;
emilmont	1:46ce1e16c870	2969	ofs -= bcs;
emilmont	1:46ce1e16c870	2970	}
emilmont	1:46ce1e16c870	2971	fp->fptr += ofs;
emilmont	1:46ce1e16c870	2972	if (ofs % SS(fp->fs)) {
emilmont	1:46ce1e16c870	2973	nsect = clust2sect(fp->fs, clst); /* Current sector */
emilmont	1:46ce1e16c870	2974	if (!nsect) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	2975	nsect += ofs / SS(fp->fs);
emilmont	1:46ce1e16c870	2976	}
emilmont	1:46ce1e16c870	2977	}
emilmont	1:46ce1e16c870	2978	}
emilmont	1:46ce1e16c870	2979	if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
emilmont	1:46ce1e16c870	2980	#if !_FS_TINY
emilmont	1:46ce1e16c870	2981	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2982	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
emilmont	1:46ce1e16c870	2983	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
emilmont	1:46ce1e16c870	2984	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2985	fp->flag &= ~FA__DIRTY;
emilmont	1:46ce1e16c870	2986	}
emilmont	1:46ce1e16c870	2987	#endif
emilmont	1:46ce1e16c870	2988	if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
emilmont	1:46ce1e16c870	2989	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	2990	#endif
emilmont	1:46ce1e16c870	2991	fp->dsect = nsect;
emilmont	1:46ce1e16c870	2992	}
emilmont	1:46ce1e16c870	2993	#if !_FS_READONLY
emilmont	1:46ce1e16c870	2994	if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
emilmont	1:46ce1e16c870	2995	fp->fsize = fp->fptr;
emilmont	1:46ce1e16c870	2996	fp->flag \|= FA__WRITTEN;
emilmont	1:46ce1e16c870	2997	}
emilmont	1:46ce1e16c870	2998	#endif
emilmont	1:46ce1e16c870	2999	}
emilmont	1:46ce1e16c870	3000
emilmont	1:46ce1e16c870	3001	LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	3002	}
emilmont	1:46ce1e16c870	3003
emilmont	1:46ce1e16c870	3004
emilmont	1:46ce1e16c870	3005
emilmont	1:46ce1e16c870	3006	#if _FS_MINIMIZE <= 1
emilmont	1:46ce1e16c870	3007	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3008	/* Create a Directory Object */
emilmont	1:46ce1e16c870	3009	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3010
emilmont	1:46ce1e16c870	3011	FRESULT f_opendir (
emilmont	1:46ce1e16c870	3012	FATFS_DIR dj, / Pointer to directory object to create */
emilmont	1:46ce1e16c870	3013	const TCHAR path / Pointer to the directory path */
emilmont	1:46ce1e16c870	3014	)
emilmont	1:46ce1e16c870	3015	{
emilmont	1:46ce1e16c870	3016	FRESULT res;
emilmont	1:46ce1e16c870	3017	FATFS *fs;
emilmont	1:46ce1e16c870	3018	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3019
emilmont	1:46ce1e16c870	3020
emilmont	1:46ce1e16c870	3021	if (!dj) return FR_INVALID_OBJECT;
emilmont	1:46ce1e16c870	3022
emilmont	1:46ce1e16c870	3023	res = chk_mounted(&path, &dj->fs, 0);
emilmont	1:46ce1e16c870	3024	fs = dj->fs;
emilmont	1:46ce1e16c870	3025	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3026	INIT_BUF(*dj);
emilmont	1:46ce1e16c870	3027	res = follow_path(dj, path); /* Follow the path to the directory */
emilmont	1:46ce1e16c870	3028	FREE_BUF();
emilmont	1:46ce1e16c870	3029	if (res == FR_OK) { /* Follow completed */
emilmont	1:46ce1e16c870	3030	if (dj->dir) { /* It is not the root dir */
emilmont	1:46ce1e16c870	3031	if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
emilmont	1:46ce1e16c870	3032	dj->sclust = ld_clust(fs, dj->dir);
emilmont	1:46ce1e16c870	3033	} else { /* The object is not a directory */
emilmont	1:46ce1e16c870	3034	res = FR_NO_PATH;
emilmont	1:46ce1e16c870	3035	}
emilmont	1:46ce1e16c870	3036	}
emilmont	1:46ce1e16c870	3037	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3038	dj->id = fs->id;
emilmont	1:46ce1e16c870	3039	res = dir_sdi(dj, 0); /* Rewind dir */
emilmont	1:46ce1e16c870	3040	}
emilmont	1:46ce1e16c870	3041	}
emilmont	1:46ce1e16c870	3042	if (res == FR_NO_FILE) res = FR_NO_PATH;
emilmont	1:46ce1e16c870	3043	if (res != FR_OK) dj->fs = 0; /* Invalidate the dir object if function faild */
emilmont	1:46ce1e16c870	3044	} else {
emilmont	1:46ce1e16c870	3045	dj->fs = 0;
emilmont	1:46ce1e16c870	3046	}
emilmont	1:46ce1e16c870	3047
emilmont	1:46ce1e16c870	3048	LEAVE_FF(fs, res);
emilmont	1:46ce1e16c870	3049	}
emilmont	1:46ce1e16c870	3050
emilmont	1:46ce1e16c870	3051
emilmont	1:46ce1e16c870	3052
emilmont	1:46ce1e16c870	3053
emilmont	1:46ce1e16c870	3054	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3055	/* Read Directory Entry in Sequence */
emilmont	1:46ce1e16c870	3056	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3057
emilmont	1:46ce1e16c870	3058	FRESULT f_readdir (
emilmont	1:46ce1e16c870	3059	FATFS_DIR dj, / Pointer to the open directory object */
emilmont	1:46ce1e16c870	3060	FILINFO fno / Pointer to file information to return */
emilmont	1:46ce1e16c870	3061	)
emilmont	1:46ce1e16c870	3062	{
emilmont	1:46ce1e16c870	3063	FRESULT res;
emilmont	1:46ce1e16c870	3064	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3065
emilmont	1:46ce1e16c870	3066
emilmont	1:46ce1e16c870	3067	res = validate(dj); /* Check validity of the object */
emilmont	1:46ce1e16c870	3068	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3069	if (!fno) {
emilmont	1:46ce1e16c870	3070	res = dir_sdi(dj, 0); /* Rewind the directory object */
emilmont	1:46ce1e16c870	3071	} else {
emilmont	1:46ce1e16c870	3072	INIT_BUF(*dj);
emilmont	1:46ce1e16c870	3073	res = dir_read(dj); /* Read an directory item */
emilmont	1:46ce1e16c870	3074	if (res == FR_NO_FILE) { /* Reached end of dir */
emilmont	1:46ce1e16c870	3075	dj->sect = 0;
emilmont	1:46ce1e16c870	3076	res = FR_OK;
emilmont	1:46ce1e16c870	3077	}
emilmont	1:46ce1e16c870	3078	if (res == FR_OK) { /* A valid entry is found */
emilmont	1:46ce1e16c870	3079	get_fileinfo(dj, fno); /* Get the object information */
emilmont	1:46ce1e16c870	3080	res = dir_next(dj, 0); /* Increment index for next */
emilmont	1:46ce1e16c870	3081	if (res == FR_NO_FILE) {
emilmont	1:46ce1e16c870	3082	dj->sect = 0;
emilmont	1:46ce1e16c870	3083	res = FR_OK;
emilmont	1:46ce1e16c870	3084	}
emilmont	1:46ce1e16c870	3085	}
emilmont	1:46ce1e16c870	3086	FREE_BUF();
emilmont	1:46ce1e16c870	3087	}
emilmont	1:46ce1e16c870	3088	}
emilmont	1:46ce1e16c870	3089
emilmont	1:46ce1e16c870	3090	LEAVE_FF(dj->fs, res);
emilmont	1:46ce1e16c870	3091	}
emilmont	1:46ce1e16c870	3092
emilmont	1:46ce1e16c870	3093
emilmont	1:46ce1e16c870	3094
emilmont	1:46ce1e16c870	3095	#if _FS_MINIMIZE == 0
emilmont	1:46ce1e16c870	3096	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3097	/* Get File Status */
emilmont	1:46ce1e16c870	3098	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3099
emilmont	1:46ce1e16c870	3100	FRESULT f_stat (
emilmont	1:46ce1e16c870	3101	const TCHAR path, / Pointer to the file path */
emilmont	1:46ce1e16c870	3102	FILINFO fno / Pointer to file information to return */
emilmont	1:46ce1e16c870	3103	)
emilmont	1:46ce1e16c870	3104	{
emilmont	1:46ce1e16c870	3105	FRESULT res;
emilmont	1:46ce1e16c870	3106	FATFS_DIR dj;
emilmont	1:46ce1e16c870	3107	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3108
emilmont	1:46ce1e16c870	3109
emilmont	1:46ce1e16c870	3110	res = chk_mounted(&path, &dj.fs, 0);
emilmont	1:46ce1e16c870	3111	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3112	INIT_BUF(dj);
emilmont	1:46ce1e16c870	3113	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	3114	if (res == FR_OK) { /* Follow completed */
emilmont	1:46ce1e16c870	3115	if (dj.dir) /* Found an object */
emilmont	1:46ce1e16c870	3116	get_fileinfo(&dj, fno);
emilmont	1:46ce1e16c870	3117	else /* It is root dir */
emilmont	1:46ce1e16c870	3118	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3119	}
emilmont	1:46ce1e16c870	3120	FREE_BUF();
emilmont	1:46ce1e16c870	3121	}
emilmont	1:46ce1e16c870	3122
emilmont	1:46ce1e16c870	3123	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	3124	}
emilmont	1:46ce1e16c870	3125
emilmont	1:46ce1e16c870	3126
emilmont	1:46ce1e16c870	3127
emilmont	1:46ce1e16c870	3128	#if !_FS_READONLY
emilmont	1:46ce1e16c870	3129	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3130	/* Get Number of Free Clusters */
emilmont	1:46ce1e16c870	3131	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3132
emilmont	1:46ce1e16c870	3133	FRESULT f_getfree (
emilmont	1:46ce1e16c870	3134	const TCHAR path, / Pointer to the logical drive number (root dir) */
emilmont	1:46ce1e16c870	3135	DWORD nclst, / Pointer to the variable to return number of free clusters */
emilmont	1:46ce1e16c870	3136	FATFS *fatfs / Pointer to pointer to corresponding file system object to return */
emilmont	1:46ce1e16c870	3137	)
emilmont	1:46ce1e16c870	3138	{
emilmont	1:46ce1e16c870	3139	FRESULT res;
emilmont	1:46ce1e16c870	3140	FATFS *fs;
emilmont	1:46ce1e16c870	3141	DWORD n, clst, sect, stat;
emilmont	1:46ce1e16c870	3142	UINT i;
emilmont	1:46ce1e16c870	3143	BYTE fat, *p;
emilmont	1:46ce1e16c870	3144
emilmont	1:46ce1e16c870	3145
emilmont	1:46ce1e16c870	3146	/* Get drive number */
emilmont	1:46ce1e16c870	3147	res = chk_mounted(&path, fatfs, 0);
emilmont	1:46ce1e16c870	3148	fs = *fatfs;
emilmont	1:46ce1e16c870	3149	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3150	/* If free_clust is valid, return it without full cluster scan */
emilmont	1:46ce1e16c870	3151	if (fs->free_clust <= fs->n_fatent - 2) {
emilmont	1:46ce1e16c870	3152	*nclst = fs->free_clust;
emilmont	1:46ce1e16c870	3153	} else {
emilmont	1:46ce1e16c870	3154	/* Get number of free clusters */
emilmont	1:46ce1e16c870	3155	fat = fs->fs_type;
emilmont	1:46ce1e16c870	3156	n = 0;
emilmont	1:46ce1e16c870	3157	if (fat == FS_FAT12) {
emilmont	1:46ce1e16c870	3158	clst = 2;
emilmont	1:46ce1e16c870	3159	do {
emilmont	1:46ce1e16c870	3160	stat = get_fat(fs, clst);
emilmont	1:46ce1e16c870	3161	if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
emilmont	1:46ce1e16c870	3162	if (stat == 1) { res = FR_INT_ERR; break; }
emilmont	1:46ce1e16c870	3163	if (stat == 0) n++;
emilmont	1:46ce1e16c870	3164	} while (++clst < fs->n_fatent);
emilmont	1:46ce1e16c870	3165	} else {
emilmont	1:46ce1e16c870	3166	clst = fs->n_fatent;
emilmont	1:46ce1e16c870	3167	sect = fs->fatbase;
emilmont	1:46ce1e16c870	3168	i = 0; p = 0;
emilmont	1:46ce1e16c870	3169	do {
emilmont	1:46ce1e16c870	3170	if (!i) {
emilmont	1:46ce1e16c870	3171	res = move_window(fs, sect++);
emilmont	1:46ce1e16c870	3172	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	3173	p = fs->win;
emilmont	1:46ce1e16c870	3174	i = SS(fs);
emilmont	1:46ce1e16c870	3175	}
emilmont	1:46ce1e16c870	3176	if (fat == FS_FAT16) {
emilmont	1:46ce1e16c870	3177	if (LD_WORD(p) == 0) n++;
emilmont	1:46ce1e16c870	3178	p += 2; i -= 2;
emilmont	1:46ce1e16c870	3179	} else {
emilmont	1:46ce1e16c870	3180	if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
emilmont	1:46ce1e16c870	3181	p += 4; i -= 4;
emilmont	1:46ce1e16c870	3182	}
emilmont	1:46ce1e16c870	3183	} while (--clst);
emilmont	1:46ce1e16c870	3184	}
emilmont	1:46ce1e16c870	3185	fs->free_clust = n;
emilmont	1:46ce1e16c870	3186	if (fat == FS_FAT32) fs->fsi_flag = 1;
emilmont	1:46ce1e16c870	3187	*nclst = n;
emilmont	1:46ce1e16c870	3188	}
emilmont	1:46ce1e16c870	3189	}
emilmont	1:46ce1e16c870	3190	LEAVE_FF(fs, res);
emilmont	1:46ce1e16c870	3191	}
emilmont	1:46ce1e16c870	3192
emilmont	1:46ce1e16c870	3193
emilmont	1:46ce1e16c870	3194
emilmont	1:46ce1e16c870	3195
emilmont	1:46ce1e16c870	3196	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3197	/* Truncate File */
emilmont	1:46ce1e16c870	3198	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3199
emilmont	1:46ce1e16c870	3200	FRESULT f_truncate (
emilmont	1:46ce1e16c870	3201	FIL fp / Pointer to the file object */
emilmont	1:46ce1e16c870	3202	)
emilmont	1:46ce1e16c870	3203	{
emilmont	1:46ce1e16c870	3204	FRESULT res;
emilmont	1:46ce1e16c870	3205	DWORD ncl;
emilmont	1:46ce1e16c870	3206
emilmont	1:46ce1e16c870	3207
emilmont	1:46ce1e16c870	3208	if (!fp) return FR_INVALID_OBJECT;
emilmont	1:46ce1e16c870	3209
emilmont	1:46ce1e16c870	3210	res = validate(fp); /* Check validity of the object */
emilmont	1:46ce1e16c870	3211	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3212	if (fp->flag & FA__ERROR) { /* Check abort flag */
emilmont	1:46ce1e16c870	3213	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	3214	} else {
emilmont	1:46ce1e16c870	3215	if (!(fp->flag & FA_WRITE)) /* Check access mode */
emilmont	1:46ce1e16c870	3216	res = FR_DENIED;
emilmont	1:46ce1e16c870	3217	}
emilmont	1:46ce1e16c870	3218	}
emilmont	1:46ce1e16c870	3219	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3220	if (fp->fsize > fp->fptr) {
emilmont	1:46ce1e16c870	3221	fp->fsize = fp->fptr; /* Set file size to current R/W point */
emilmont	1:46ce1e16c870	3222	fp->flag \|= FA__WRITTEN;
emilmont	1:46ce1e16c870	3223	if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
emilmont	1:46ce1e16c870	3224	res = remove_chain(fp->fs, fp->sclust);
emilmont	1:46ce1e16c870	3225	fp->sclust = 0;
emilmont	1:46ce1e16c870	3226	} else { /* When truncate a part of the file, remove remaining clusters */
emilmont	1:46ce1e16c870	3227	ncl = get_fat(fp->fs, fp->clust);
emilmont	1:46ce1e16c870	3228	res = FR_OK;
emilmont	1:46ce1e16c870	3229	if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
emilmont	1:46ce1e16c870	3230	if (ncl == 1) res = FR_INT_ERR;
emilmont	1:46ce1e16c870	3231	if (res == FR_OK && ncl < fp->fs->n_fatent) {
emilmont	1:46ce1e16c870	3232	res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
emilmont	1:46ce1e16c870	3233	if (res == FR_OK) res = remove_chain(fp->fs, ncl);
emilmont	1:46ce1e16c870	3234	}
emilmont	1:46ce1e16c870	3235	}
emilmont	1:46ce1e16c870	3236	}
emilmont	1:46ce1e16c870	3237	if (res != FR_OK) fp->flag \|= FA__ERROR;
emilmont	1:46ce1e16c870	3238	}
emilmont	1:46ce1e16c870	3239
emilmont	1:46ce1e16c870	3240	LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	3241	}
emilmont	1:46ce1e16c870	3242
emilmont	1:46ce1e16c870	3243
emilmont	1:46ce1e16c870	3244
emilmont	1:46ce1e16c870	3245
emilmont	1:46ce1e16c870	3246	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3247	/* Delete a File or Directory */
emilmont	1:46ce1e16c870	3248	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3249
emilmont	1:46ce1e16c870	3250	FRESULT f_unlink (
emilmont	1:46ce1e16c870	3251	const TCHAR path / Pointer to the file or directory path */
emilmont	1:46ce1e16c870	3252	)
emilmont	1:46ce1e16c870	3253	{
emilmont	1:46ce1e16c870	3254	FRESULT res;
emilmont	1:46ce1e16c870	3255	FATFS_DIR dj, sdj;
emilmont	1:46ce1e16c870	3256	BYTE *dir;
emilmont	1:46ce1e16c870	3257	DWORD dclst;
emilmont	1:46ce1e16c870	3258	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3259
emilmont	1:46ce1e16c870	3260
emilmont	1:46ce1e16c870	3261	res = chk_mounted(&path, &dj.fs, 1);
emilmont	1:46ce1e16c870	3262	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3263	INIT_BUF(dj);
emilmont	1:46ce1e16c870	3264	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	3265	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
emilmont	1:46ce1e16c870	3266	res = FR_INVALID_NAME; /* Cannot remove dot entry */
emilmont	1:46ce1e16c870	3267	#if _FS_LOCK
emilmont	1:46ce1e16c870	3268	if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
emilmont	1:46ce1e16c870	3269	#endif
emilmont	1:46ce1e16c870	3270	if (res == FR_OK) { /* The object is accessible */
emilmont	1:46ce1e16c870	3271	dir = dj.dir;
emilmont	1:46ce1e16c870	3272	if (!dir) {
emilmont	1:46ce1e16c870	3273	res = FR_INVALID_NAME; /* Cannot remove the start directory */
emilmont	1:46ce1e16c870	3274	} else {
emilmont	1:46ce1e16c870	3275	if (dir[DIR_Attr] & AM_RDO)
emilmont	1:46ce1e16c870	3276	res = FR_DENIED; /* Cannot remove R/O object */
emilmont	1:46ce1e16c870	3277	}
emilmont	1:46ce1e16c870	3278	dclst = ld_clust(dj.fs, dir);
emilmont	1:46ce1e16c870	3279	if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
emilmont	1:46ce1e16c870	3280	if (dclst < 2) {
emilmont	1:46ce1e16c870	3281	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	3282	} else {
emilmont	1:46ce1e16c870	3283	mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Check if the sub-dir is empty or not */
emilmont	1:46ce1e16c870	3284	sdj.sclust = dclst;
emilmont	1:46ce1e16c870	3285	res = dir_sdi(&sdj, 2); /* Exclude dot entries */
emilmont	1:46ce1e16c870	3286	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3287	res = dir_read(&sdj);
emilmont	1:46ce1e16c870	3288	if (res == FR_OK /* Not empty dir */
emilmont	1:46ce1e16c870	3289	#if _FS_RPATH
emilmont	1:46ce1e16c870	3290	\|\| dclst == dj.fs->cdir /* Current dir */
emilmont	1:46ce1e16c870	3291	#endif
emilmont	1:46ce1e16c870	3292	) res = FR_DENIED;
emilmont	1:46ce1e16c870	3293	if (res == FR_NO_FILE) res = FR_OK; /* Empty */
emilmont	1:46ce1e16c870	3294	}
emilmont	1:46ce1e16c870	3295	}
emilmont	1:46ce1e16c870	3296	}
emilmont	1:46ce1e16c870	3297	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3298	res = dir_remove(&dj); /* Remove the directory entry */
emilmont	1:46ce1e16c870	3299	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3300	if (dclst) /* Remove the cluster chain if exist */
emilmont	1:46ce1e16c870	3301	res = remove_chain(dj.fs, dclst);
emilmont	1:46ce1e16c870	3302	if (res == FR_OK) res = sync(dj.fs);
emilmont	1:46ce1e16c870	3303	}
emilmont	1:46ce1e16c870	3304	}
emilmont	1:46ce1e16c870	3305	}
emilmont	1:46ce1e16c870	3306	FREE_BUF();
emilmont	1:46ce1e16c870	3307	}
emilmont	1:46ce1e16c870	3308	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	3309	}
emilmont	1:46ce1e16c870	3310
emilmont	1:46ce1e16c870	3311
emilmont	1:46ce1e16c870	3312
emilmont	1:46ce1e16c870	3313
emilmont	1:46ce1e16c870	3314	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3315	/* Create a Directory */
emilmont	1:46ce1e16c870	3316	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3317
emilmont	1:46ce1e16c870	3318	FRESULT f_mkdir (
emilmont	1:46ce1e16c870	3319	const TCHAR path / Pointer to the directory path */
emilmont	1:46ce1e16c870	3320	)
emilmont	1:46ce1e16c870	3321	{
emilmont	1:46ce1e16c870	3322	FRESULT res;
emilmont	1:46ce1e16c870	3323	FATFS_DIR dj;
emilmont	1:46ce1e16c870	3324	BYTE *dir, n;
emilmont	1:46ce1e16c870	3325	DWORD dsc, dcl, pcl, tim = get_fattime();
emilmont	1:46ce1e16c870	3326	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3327
emilmont	1:46ce1e16c870	3328
emilmont	1:46ce1e16c870	3329	res = chk_mounted(&path, &dj.fs, 1);
emilmont	1:46ce1e16c870	3330	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3331	INIT_BUF(dj);
emilmont	1:46ce1e16c870	3332	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	3333	if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
emilmont	1:46ce1e16c870	3334	if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
emilmont	1:46ce1e16c870	3335	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3336	if (res == FR_NO_FILE) { /* Can create a new directory */
emilmont	1:46ce1e16c870	3337	dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
emilmont	1:46ce1e16c870	3338	res = FR_OK;
emilmont	1:46ce1e16c870	3339	if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
emilmont	1:46ce1e16c870	3340	if (dcl == 1) res = FR_INT_ERR;
emilmont	1:46ce1e16c870	3341	if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
emilmont	1:46ce1e16c870	3342	if (res == FR_OK) /* Flush FAT */
emilmont	1:46ce1e16c870	3343	res = move_window(dj.fs, 0);
emilmont	1:46ce1e16c870	3344	if (res == FR_OK) { /* Initialize the new directory table */
emilmont	1:46ce1e16c870	3345	dsc = clust2sect(dj.fs, dcl);
emilmont	1:46ce1e16c870	3346	dir = dj.fs->win;
emilmont	1:46ce1e16c870	3347	mem_set(dir, 0, SS(dj.fs));
emilmont	1:46ce1e16c870	3348	mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
emilmont	1:46ce1e16c870	3349	dir[DIR_Name] = '.';
emilmont	1:46ce1e16c870	3350	dir[DIR_Attr] = AM_DIR;
emilmont	1:46ce1e16c870	3351	ST_DWORD(dir+DIR_WrtTime, tim);
emilmont	1:46ce1e16c870	3352	st_clust(dir, dcl);
emilmont	1:46ce1e16c870	3353	mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
emilmont	1:46ce1e16c870	3354	dir[33] = '.'; pcl = dj.sclust;
emilmont	1:46ce1e16c870	3355	if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
emilmont	1:46ce1e16c870	3356	pcl = 0;
emilmont	1:46ce1e16c870	3357	st_clust(dir+SZ_DIR, pcl);
emilmont	1:46ce1e16c870	3358	for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
emilmont	1:46ce1e16c870	3359	dj.fs->winsect = dsc++;
emilmont	1:46ce1e16c870	3360	dj.fs->wflag = 1;
emilmont	1:46ce1e16c870	3361	res = move_window(dj.fs, 0);
emilmont	1:46ce1e16c870	3362	if (res != FR_OK) break;
emilmont	1:46ce1e16c870	3363	mem_set(dir, 0, SS(dj.fs));
emilmont	1:46ce1e16c870	3364	}
emilmont	1:46ce1e16c870	3365	}
emilmont	1:46ce1e16c870	3366	if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
emilmont	1:46ce1e16c870	3367	if (res != FR_OK) {
emilmont	1:46ce1e16c870	3368	remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
emilmont	1:46ce1e16c870	3369	} else {
emilmont	1:46ce1e16c870	3370	dir = dj.dir;
emilmont	1:46ce1e16c870	3371	dir[DIR_Attr] = AM_DIR; /* Attribute */
emilmont	1:46ce1e16c870	3372	ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
emilmont	1:46ce1e16c870	3373	st_clust(dir, dcl); /* Table start cluster */
emilmont	1:46ce1e16c870	3374	dj.fs->wflag = 1;
emilmont	1:46ce1e16c870	3375	res = sync(dj.fs);
emilmont	1:46ce1e16c870	3376	}
emilmont	1:46ce1e16c870	3377	}
emilmont	1:46ce1e16c870	3378	FREE_BUF();
emilmont	1:46ce1e16c870	3379	}
emilmont	1:46ce1e16c870	3380
emilmont	1:46ce1e16c870	3381	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	3382	}
emilmont	1:46ce1e16c870	3383
emilmont	1:46ce1e16c870	3384
emilmont	1:46ce1e16c870	3385
emilmont	1:46ce1e16c870	3386
emilmont	1:46ce1e16c870	3387	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3388	/* Change Attribute */
emilmont	1:46ce1e16c870	3389	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3390
emilmont	1:46ce1e16c870	3391	FRESULT f_chmod (
emilmont	1:46ce1e16c870	3392	const TCHAR path, / Pointer to the file path */
emilmont	1:46ce1e16c870	3393	BYTE value, /* Attribute bits */
emilmont	1:46ce1e16c870	3394	BYTE mask /* Attribute mask to change */
emilmont	1:46ce1e16c870	3395	)
emilmont	1:46ce1e16c870	3396	{
emilmont	1:46ce1e16c870	3397	FRESULT res;
emilmont	1:46ce1e16c870	3398	FATFS_DIR dj;
emilmont	1:46ce1e16c870	3399	BYTE *dir;
emilmont	1:46ce1e16c870	3400	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3401
emilmont	1:46ce1e16c870	3402
emilmont	1:46ce1e16c870	3403	res = chk_mounted(&path, &dj.fs, 1);
emilmont	1:46ce1e16c870	3404	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3405	INIT_BUF(dj);
emilmont	1:46ce1e16c870	3406	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	3407	FREE_BUF();
emilmont	1:46ce1e16c870	3408	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
emilmont	1:46ce1e16c870	3409	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3410	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3411	dir = dj.dir;
emilmont	1:46ce1e16c870	3412	if (!dir) { /* Is it a root directory? */
emilmont	1:46ce1e16c870	3413	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3414	} else { /* File or sub directory */
emilmont	1:46ce1e16c870	3415	mask &= AM_RDO\|AM_HID\|AM_SYS\|AM_ARC; /* Valid attribute mask */
emilmont	1:46ce1e16c870	3416	dir[DIR_Attr] = (value & mask) \| (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
emilmont	1:46ce1e16c870	3417	dj.fs->wflag = 1;
emilmont	1:46ce1e16c870	3418	res = sync(dj.fs);
emilmont	1:46ce1e16c870	3419	}
emilmont	1:46ce1e16c870	3420	}
emilmont	1:46ce1e16c870	3421	}
emilmont	1:46ce1e16c870	3422
emilmont	1:46ce1e16c870	3423	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	3424	}
emilmont	1:46ce1e16c870	3425
emilmont	1:46ce1e16c870	3426
emilmont	1:46ce1e16c870	3427
emilmont	1:46ce1e16c870	3428
emilmont	1:46ce1e16c870	3429	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3430	/* Change Timestamp */
emilmont	1:46ce1e16c870	3431	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3432
emilmont	1:46ce1e16c870	3433	FRESULT f_utime (
emilmont	1:46ce1e16c870	3434	const TCHAR path, / Pointer to the file/directory name */
emilmont	1:46ce1e16c870	3435	const FILINFO fno / Pointer to the time stamp to be set */
emilmont	1:46ce1e16c870	3436	)
emilmont	1:46ce1e16c870	3437	{
emilmont	1:46ce1e16c870	3438	FRESULT res;
emilmont	1:46ce1e16c870	3439	FATFS_DIR dj;
emilmont	1:46ce1e16c870	3440	BYTE *dir;
emilmont	1:46ce1e16c870	3441	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3442
emilmont	1:46ce1e16c870	3443
emilmont	1:46ce1e16c870	3444	res = chk_mounted(&path, &dj.fs, 1);
emilmont	1:46ce1e16c870	3445	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3446	INIT_BUF(dj);
emilmont	1:46ce1e16c870	3447	res = follow_path(&dj, path); /* Follow the file path */
emilmont	1:46ce1e16c870	3448	FREE_BUF();
emilmont	1:46ce1e16c870	3449	if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
emilmont	1:46ce1e16c870	3450	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3451	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3452	dir = dj.dir;
emilmont	1:46ce1e16c870	3453	if (!dir) { /* Root directory */
emilmont	1:46ce1e16c870	3454	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3455	} else { /* File or sub-directory */
emilmont	1:46ce1e16c870	3456	ST_WORD(dir+DIR_WrtTime, fno->ftime);
emilmont	1:46ce1e16c870	3457	ST_WORD(dir+DIR_WrtDate, fno->fdate);
emilmont	1:46ce1e16c870	3458	dj.fs->wflag = 1;
emilmont	1:46ce1e16c870	3459	res = sync(dj.fs);
emilmont	1:46ce1e16c870	3460	}
emilmont	1:46ce1e16c870	3461	}
emilmont	1:46ce1e16c870	3462	}
emilmont	1:46ce1e16c870	3463
emilmont	1:46ce1e16c870	3464	LEAVE_FF(dj.fs, res);
emilmont	1:46ce1e16c870	3465	}
emilmont	1:46ce1e16c870	3466
emilmont	1:46ce1e16c870	3467
emilmont	1:46ce1e16c870	3468
emilmont	1:46ce1e16c870	3469
emilmont	1:46ce1e16c870	3470	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3471	/* Rename File/Directory */
emilmont	1:46ce1e16c870	3472	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3473
emilmont	1:46ce1e16c870	3474	FRESULT f_rename (
emilmont	1:46ce1e16c870	3475	const TCHAR path_old, / Pointer to the old name */
emilmont	1:46ce1e16c870	3476	const TCHAR path_new / Pointer to the new name */
emilmont	1:46ce1e16c870	3477	)
emilmont	1:46ce1e16c870	3478	{
emilmont	1:46ce1e16c870	3479	FRESULT res;
emilmont	1:46ce1e16c870	3480	FATFS_DIR djo, djn;
emilmont	1:46ce1e16c870	3481	BYTE buf[21], *dir;
emilmont	1:46ce1e16c870	3482	DWORD dw;
emilmont	1:46ce1e16c870	3483	DEF_NAMEBUF;
emilmont	1:46ce1e16c870	3484
emilmont	1:46ce1e16c870	3485
emilmont	1:46ce1e16c870	3486	res = chk_mounted(&path_old, &djo.fs, 1);
emilmont	1:46ce1e16c870	3487	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3488	djn.fs = djo.fs;
emilmont	1:46ce1e16c870	3489	INIT_BUF(djo);
emilmont	1:46ce1e16c870	3490	res = follow_path(&djo, path_old); /* Check old object */
emilmont	1:46ce1e16c870	3491	if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
emilmont	1:46ce1e16c870	3492	res = FR_INVALID_NAME;
emilmont	1:46ce1e16c870	3493	#if _FS_LOCK
emilmont	1:46ce1e16c870	3494	if (res == FR_OK) res = chk_lock(&djo, 2);
emilmont	1:46ce1e16c870	3495	#endif
emilmont	1:46ce1e16c870	3496	if (res == FR_OK) { /* Old object is found */
emilmont	1:46ce1e16c870	3497	if (!djo.dir) { /* Is root dir? */
emilmont	1:46ce1e16c870	3498	res = FR_NO_FILE;
emilmont	1:46ce1e16c870	3499	} else {
emilmont	1:46ce1e16c870	3500	mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
emilmont	1:46ce1e16c870	3501	mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Check new object */
emilmont	1:46ce1e16c870	3502	res = follow_path(&djn, path_new);
emilmont	1:46ce1e16c870	3503	if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
emilmont	1:46ce1e16c870	3504	if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
emilmont	1:46ce1e16c870	3505	/* Start critical section that an interruption or error can cause cross-link */
emilmont	1:46ce1e16c870	3506	res = dir_register(&djn); /* Register the new entry */
emilmont	1:46ce1e16c870	3507	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3508	dir = djn.dir; /* Copy object information except for name */
emilmont	1:46ce1e16c870	3509	mem_cpy(dir+13, buf+2, 19);
emilmont	1:46ce1e16c870	3510	dir[DIR_Attr] = buf[0] \| AM_ARC;
emilmont	1:46ce1e16c870	3511	djo.fs->wflag = 1;
emilmont	1:46ce1e16c870	3512	if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
emilmont	1:46ce1e16c870	3513	dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
emilmont	1:46ce1e16c870	3514	if (!dw) {
emilmont	1:46ce1e16c870	3515	res = FR_INT_ERR;
emilmont	1:46ce1e16c870	3516	} else {
emilmont	1:46ce1e16c870	3517	res = move_window(djo.fs, dw);
emilmont	1:46ce1e16c870	3518	dir = djo.fs->win+SZ_DIR; /* .. entry */
emilmont	1:46ce1e16c870	3519	if (res == FR_OK && dir[1] == '.') {
emilmont	1:46ce1e16c870	3520	dw = (djo.fs->fs_type == FS_FAT32 && djn.sclust == djo.fs->dirbase) ? 0 : djn.sclust;
emilmont	1:46ce1e16c870	3521	st_clust(dir, dw);
emilmont	1:46ce1e16c870	3522	djo.fs->wflag = 1;
emilmont	1:46ce1e16c870	3523	}
emilmont	1:46ce1e16c870	3524	}
emilmont	1:46ce1e16c870	3525	}
emilmont	1:46ce1e16c870	3526	if (res == FR_OK) {
emilmont	1:46ce1e16c870	3527	res = dir_remove(&djo); /* Remove old entry */
emilmont	1:46ce1e16c870	3528	if (res == FR_OK)
emilmont	1:46ce1e16c870	3529	res = sync(djo.fs);
emilmont	1:46ce1e16c870	3530	}
emilmont	1:46ce1e16c870	3531	}
emilmont	1:46ce1e16c870	3532	/* End critical section */
emilmont	1:46ce1e16c870	3533	}
emilmont	1:46ce1e16c870	3534	}
emilmont	1:46ce1e16c870	3535	}
emilmont	1:46ce1e16c870	3536	FREE_BUF();
emilmont	1:46ce1e16c870	3537	}
emilmont	1:46ce1e16c870	3538	LEAVE_FF(djo.fs, res);
emilmont	1:46ce1e16c870	3539	}
emilmont	1:46ce1e16c870	3540
emilmont	1:46ce1e16c870	3541	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	3542	#endif /* _FS_MINIMIZE == 0 */
emilmont	1:46ce1e16c870	3543	#endif /* _FS_MINIMIZE <= 1 */
emilmont	1:46ce1e16c870	3544	#endif /* _FS_MINIMIZE <= 2 */
emilmont	1:46ce1e16c870	3545
emilmont	1:46ce1e16c870	3546
emilmont	1:46ce1e16c870	3547
emilmont	1:46ce1e16c870	3548	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3549	/* Forward data to the stream directly (available on only tiny cfg) */
emilmont	1:46ce1e16c870	3550	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3551	#if _USE_FORWARD && _FS_TINY
emilmont	1:46ce1e16c870	3552
emilmont	1:46ce1e16c870	3553	FRESULT f_forward (
emilmont	1:46ce1e16c870	3554	FIL fp, / Pointer to the file object */
emilmont	1:46ce1e16c870	3555	UINT (func)(const BYTE,UINT), /* Pointer to the streaming function */
emilmont	1:46ce1e16c870	3556	UINT btr, /* Number of bytes to forward */
emilmont	1:46ce1e16c870	3557	UINT bf / Pointer to number of bytes forwarded */
emilmont	1:46ce1e16c870	3558	)
emilmont	1:46ce1e16c870	3559	{
emilmont	1:46ce1e16c870	3560	FRESULT res;
emilmont	1:46ce1e16c870	3561	DWORD remain, clst, sect;
emilmont	1:46ce1e16c870	3562	UINT rcnt;
emilmont	1:46ce1e16c870	3563	BYTE csect;
emilmont	1:46ce1e16c870	3564
emilmont	1:46ce1e16c870	3565
emilmont	1:46ce1e16c870	3566	bf = 0; / Clear transfer byte counter */
emilmont	1:46ce1e16c870	3567
emilmont	1:46ce1e16c870	3568	if (!fp) return FR_INVALID_OBJECT;
emilmont	1:46ce1e16c870	3569
emilmont	1:46ce1e16c870	3570	res = validate(fp); /* Check validity of the object */
emilmont	1:46ce1e16c870	3571	if (res != FR_OK) LEAVE_FF(fp->fs, res);
emilmont	1:46ce1e16c870	3572	if (fp->flag & FA__ERROR) /* Check error flag */
emilmont	1:46ce1e16c870	3573	LEAVE_FF(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	3574	if (!(fp->flag & FA_READ)) /* Check access mode */
emilmont	1:46ce1e16c870	3575	LEAVE_FF(fp->fs, FR_DENIED);
emilmont	1:46ce1e16c870	3576
emilmont	1:46ce1e16c870	3577	remain = fp->fsize - fp->fptr;
emilmont	1:46ce1e16c870	3578	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
emilmont	1:46ce1e16c870	3579
emilmont	1:46ce1e16c870	3580	for ( ; btr && (func)(0, 0); / Repeat until all data transferred or stream becomes busy */
emilmont	1:46ce1e16c870	3581	fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
emilmont	1:46ce1e16c870	3582	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
emilmont	1:46ce1e16c870	3583	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
emilmont	1:46ce1e16c870	3584	if (!csect) { /* On the cluster boundary? */
emilmont	1:46ce1e16c870	3585	clst = (fp->fptr == 0) ? /* On the top of the file? */
emilmont	1:46ce1e16c870	3586	fp->sclust : get_fat(fp->fs, fp->clust);
emilmont	1:46ce1e16c870	3587	if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	3588	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	3589	fp->clust = clst; /* Update current cluster */
emilmont	1:46ce1e16c870	3590	}
emilmont	1:46ce1e16c870	3591	}
emilmont	1:46ce1e16c870	3592	sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
emilmont	1:46ce1e16c870	3593	if (!sect) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	3594	sect += csect;
emilmont	1:46ce1e16c870	3595	if (move_window(fp->fs, sect)) /* Move sector window */
emilmont	1:46ce1e16c870	3596	ABORT(fp->fs, FR_DISK_ERR);
emilmont	1:46ce1e16c870	3597	fp->dsect = sect;
emilmont	1:46ce1e16c870	3598	rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
emilmont	1:46ce1e16c870	3599	if (rcnt > btr) rcnt = btr;
emilmont	1:46ce1e16c870	3600	rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
emilmont	1:46ce1e16c870	3601	if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
emilmont	1:46ce1e16c870	3602	}
emilmont	1:46ce1e16c870	3603
emilmont	1:46ce1e16c870	3604	LEAVE_FF(fp->fs, FR_OK);
emilmont	1:46ce1e16c870	3605	}
emilmont	1:46ce1e16c870	3606	#endif /* _USE_FORWARD */
emilmont	1:46ce1e16c870	3607
emilmont	1:46ce1e16c870	3608
emilmont	1:46ce1e16c870	3609
emilmont	1:46ce1e16c870	3610	#if _USE_MKFS && !_FS_READONLY
emilmont	1:46ce1e16c870	3611	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3612	/* Create File System on the Drive */
emilmont	1:46ce1e16c870	3613	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3614	#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
emilmont	1:46ce1e16c870	3615	#define N_FATS 1 /* Number of FAT copies (1 or 2) */
emilmont	1:46ce1e16c870	3616
emilmont	1:46ce1e16c870	3617
emilmont	1:46ce1e16c870	3618	FRESULT f_mkfs (
emilmont	1:46ce1e16c870	3619	BYTE drv, /* Logical drive number */
emilmont	1:46ce1e16c870	3620	BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
emilmont	1:46ce1e16c870	3621	UINT au /* Allocation unit size [bytes] */
emilmont	1:46ce1e16c870	3622	)
emilmont	1:46ce1e16c870	3623	{
emilmont	1:46ce1e16c870	3624	static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
emilmont	1:46ce1e16c870	3625	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
emilmont	1:46ce1e16c870	3626	BYTE fmt, md, sys, *tbl, pdrv, part;
emilmont	1:46ce1e16c870	3627	DWORD n_clst, vs, n, wsect;
emilmont	1:46ce1e16c870	3628	UINT i;
emilmont	1:46ce1e16c870	3629	DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
emilmont	1:46ce1e16c870	3630	DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
emilmont	1:46ce1e16c870	3631	FATFS *fs;
emilmont	1:46ce1e16c870	3632	DSTATUS stat;
emilmont	1:46ce1e16c870	3633
emilmont	1:46ce1e16c870	3634
emilmont	1:46ce1e16c870	3635	/* Check mounted drive and clear work area */
emilmont	1:46ce1e16c870	3636	if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
emilmont	1:46ce1e16c870	3637	if (sfd > 1) return FR_INVALID_PARAMETER;
emilmont	1:46ce1e16c870	3638	if (au & (au - 1)) return FR_INVALID_PARAMETER;
emilmont	1:46ce1e16c870	3639	fs = FatFs[drv];
emilmont	1:46ce1e16c870	3640	if (!fs) return FR_NOT_ENABLED;
emilmont	1:46ce1e16c870	3641	fs->fs_type = 0;
emilmont	1:46ce1e16c870	3642	pdrv = LD2PD(drv); /* Physical drive */
emilmont	1:46ce1e16c870	3643	part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/
emilmont	1:46ce1e16c870	3644
emilmont	1:46ce1e16c870	3645	/* Get disk statics */
emilmont	1:46ce1e16c870	3646	stat = disk_initialize(pdrv);
emilmont	1:46ce1e16c870	3647	if (stat & STA_NOINIT) return FR_NOT_READY;
emilmont	1:46ce1e16c870	3648	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
emilmont	1:46ce1e16c870	3649	#if _MAX_SS != 512 /* Get disk sector size */
emilmont	1:46ce1e16c870	3650	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK \|\| SS(fs) > _MAX_SS)
emilmont	1:46ce1e16c870	3651	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3652	#endif
emilmont	1:46ce1e16c870	3653	if (_MULTI_PARTITION && part) {
emilmont	1:46ce1e16c870	3654	/* Get partition information from partition table in the MBR */
emilmont	1:46ce1e16c870	3655	if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3656	if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
emilmont	1:46ce1e16c870	3657	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
emilmont	1:46ce1e16c870	3658	if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
emilmont	1:46ce1e16c870	3659	b_vol = LD_DWORD(tbl+8); /* Volume start sector */
emilmont	1:46ce1e16c870	3660	n_vol = LD_DWORD(tbl+12); /* Volume size */
emilmont	1:46ce1e16c870	3661	} else {
emilmont	1:46ce1e16c870	3662	/* Create a partition in this function */
emilmont	1:46ce1e16c870	3663	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK \|\| n_vol < 128)
emilmont	1:46ce1e16c870	3664	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3665	b_vol = (sfd) ? 0 : 63; /* Volume start sector */
emilmont	1:46ce1e16c870	3666	n_vol -= b_vol; /* Volume size */
emilmont	1:46ce1e16c870	3667	}
emilmont	1:46ce1e16c870	3668
emilmont	1:46ce1e16c870	3669	if (!au) { /* AU auto selection */
emilmont	1:46ce1e16c870	3670	vs = n_vol / (2000 / (SS(fs) / 512));
emilmont	1:46ce1e16c870	3671	for (i = 0; vs < vst[i]; i++) ;
emilmont	1:46ce1e16c870	3672	au = cst[i];
emilmont	1:46ce1e16c870	3673	}
emilmont	1:46ce1e16c870	3674	au /= SS(fs); /* Number of sectors per cluster */
emilmont	1:46ce1e16c870	3675	if (au == 0) au = 1;
emilmont	1:46ce1e16c870	3676	if (au > 128) au = 128;
emilmont	1:46ce1e16c870	3677
emilmont	1:46ce1e16c870	3678	/* Pre-compute number of clusters and FAT sub-type */
emilmont	1:46ce1e16c870	3679	n_clst = n_vol / au;
emilmont	1:46ce1e16c870	3680	fmt = FS_FAT12;
emilmont	1:46ce1e16c870	3681	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
emilmont	1:46ce1e16c870	3682	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
emilmont	1:46ce1e16c870	3683
emilmont	1:46ce1e16c870	3684	/* Determine offset and size of FAT structure */
emilmont	1:46ce1e16c870	3685	if (fmt == FS_FAT32) {
emilmont	1:46ce1e16c870	3686	n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
emilmont	1:46ce1e16c870	3687	n_rsv = 32;
emilmont	1:46ce1e16c870	3688	n_dir = 0;
emilmont	1:46ce1e16c870	3689	} else {
emilmont	1:46ce1e16c870	3690	n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
emilmont	1:46ce1e16c870	3691	n_fat = (n_fat + SS(fs) - 1) / SS(fs);
emilmont	1:46ce1e16c870	3692	n_rsv = 1;
emilmont	1:46ce1e16c870	3693	n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
emilmont	1:46ce1e16c870	3694	}
emilmont	1:46ce1e16c870	3695	b_fat = b_vol + n_rsv; /* FAT area start sector */
emilmont	1:46ce1e16c870	3696	b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
emilmont	1:46ce1e16c870	3697	b_data = b_dir + n_dir; /* Data area start sector */
emilmont	1:46ce1e16c870	3698	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
emilmont	1:46ce1e16c870	3699
emilmont	1:46ce1e16c870	3700	/* Align data start sector to erase block boundary (for flash memory media) */
emilmont	1:46ce1e16c870	3701	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK \|\| !n \|\| n > 32768) n = 1;
emilmont	1:46ce1e16c870	3702	n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
emilmont	1:46ce1e16c870	3703	n = (n - b_data) / N_FATS;
emilmont	1:46ce1e16c870	3704	if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
emilmont	1:46ce1e16c870	3705	n_rsv += n;
emilmont	1:46ce1e16c870	3706	b_fat += n;
emilmont	1:46ce1e16c870	3707	} else { /* FAT12/16: Expand FAT size */
emilmont	1:46ce1e16c870	3708	n_fat += n;
emilmont	1:46ce1e16c870	3709	}
emilmont	1:46ce1e16c870	3710
emilmont	1:46ce1e16c870	3711	/* Determine number of clusters and final check of validity of the FAT sub-type */
emilmont	1:46ce1e16c870	3712	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
emilmont	1:46ce1e16c870	3713	if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
emilmont	1:46ce1e16c870	3714	\|\| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
emilmont	1:46ce1e16c870	3715	return FR_MKFS_ABORTED;
emilmont	1:46ce1e16c870	3716
emilmont	1:46ce1e16c870	3717	switch (fmt) { /* Determine system ID for partition table */
emilmont	1:46ce1e16c870	3718	case FS_FAT12: sys = 0x01; break;
emilmont	1:46ce1e16c870	3719	case FS_FAT16: sys = (n_vol < 0x10000) ? 0x04 : 0x06; break;
emilmont	1:46ce1e16c870	3720	default: sys = 0x0C;
emilmont	1:46ce1e16c870	3721	}
emilmont	1:46ce1e16c870	3722
emilmont	1:46ce1e16c870	3723	if (_MULTI_PARTITION && part) {
emilmont	1:46ce1e16c870	3724	/* Update system ID in the partition table */
emilmont	1:46ce1e16c870	3725	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
emilmont	1:46ce1e16c870	3726	tbl[4] = sys;
emilmont	1:46ce1e16c870	3727	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3728	md = 0xF8;
emilmont	1:46ce1e16c870	3729	} else {
emilmont	1:46ce1e16c870	3730	if (sfd) { /* No partition table (SFD) */
emilmont	1:46ce1e16c870	3731	md = 0xF0;
emilmont	1:46ce1e16c870	3732	} else { /* Create partition table (FDISK) */
emilmont	1:46ce1e16c870	3733	mem_set(fs->win, 0, SS(fs));
emilmont	1:46ce1e16c870	3734	tbl = fs->win+MBR_Table; /* Create partition table for single partition in the drive */
emilmont	1:46ce1e16c870	3735	tbl[1] = 1; /* Partition start head */
emilmont	1:46ce1e16c870	3736	tbl[2] = 1; /* Partition start sector */
emilmont	1:46ce1e16c870	3737	tbl[3] = 0; /* Partition start cylinder */
emilmont	1:46ce1e16c870	3738	tbl[4] = sys; /* System type */
emilmont	1:46ce1e16c870	3739	tbl[5] = 254; /* Partition end head */
emilmont	1:46ce1e16c870	3740	n = (b_vol + n_vol) / 63 / 255;
emilmont	1:46ce1e16c870	3741	tbl[6] = (BYTE)((n >> 2) \| 63); /* Partition end sector */
emilmont	1:46ce1e16c870	3742	tbl[7] = (BYTE)n; /* End cylinder */
emilmont	1:46ce1e16c870	3743	ST_DWORD(tbl+8, 63); /* Partition start in LBA */
emilmont	1:46ce1e16c870	3744	ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
emilmont	1:46ce1e16c870	3745	ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
emilmont	1:46ce1e16c870	3746	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */
emilmont	1:46ce1e16c870	3747	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3748	md = 0xF8;
emilmont	1:46ce1e16c870	3749	}
emilmont	1:46ce1e16c870	3750	}
emilmont	1:46ce1e16c870	3751
emilmont	1:46ce1e16c870	3752	/* Create BPB in the VBR */
emilmont	1:46ce1e16c870	3753	tbl = fs->win; /* Clear sector */
emilmont	1:46ce1e16c870	3754	mem_set(tbl, 0, SS(fs));
emilmont	1:46ce1e16c870	3755	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
emilmont	1:46ce1e16c870	3756	i = SS(fs); /* Sector size */
emilmont	1:46ce1e16c870	3757	ST_WORD(tbl+BPB_BytsPerSec, i);
emilmont	1:46ce1e16c870	3758	tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
emilmont	1:46ce1e16c870	3759	ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
emilmont	1:46ce1e16c870	3760	tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
emilmont	1:46ce1e16c870	3761	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
emilmont	1:46ce1e16c870	3762	ST_WORD(tbl+BPB_RootEntCnt, i);
emilmont	1:46ce1e16c870	3763	if (n_vol < 0x10000) { /* Number of total sectors */
emilmont	1:46ce1e16c870	3764	ST_WORD(tbl+BPB_TotSec16, n_vol);
emilmont	1:46ce1e16c870	3765	} else {
emilmont	1:46ce1e16c870	3766	ST_DWORD(tbl+BPB_TotSec32, n_vol);
emilmont	1:46ce1e16c870	3767	}
emilmont	1:46ce1e16c870	3768	tbl[BPB_Media] = md; /* Media descriptor */
emilmont	1:46ce1e16c870	3769	ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
emilmont	1:46ce1e16c870	3770	ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
emilmont	1:46ce1e16c870	3771	ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
emilmont	1:46ce1e16c870	3772	n = get_fattime(); /* Use current time as VSN */
emilmont	1:46ce1e16c870	3773	if (fmt == FS_FAT32) {
emilmont	1:46ce1e16c870	3774	ST_DWORD(tbl+BS_VolID32, n); /* VSN */
emilmont	1:46ce1e16c870	3775	ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
emilmont	1:46ce1e16c870	3776	ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
emilmont	1:46ce1e16c870	3777	ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
emilmont	1:46ce1e16c870	3778	ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
emilmont	1:46ce1e16c870	3779	tbl[BS_DrvNum32] = 0x80; /* Drive number */
emilmont	1:46ce1e16c870	3780	tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
emilmont	1:46ce1e16c870	3781	mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
emilmont	1:46ce1e16c870	3782	} else {
emilmont	1:46ce1e16c870	3783	ST_DWORD(tbl+BS_VolID, n); /* VSN */
emilmont	1:46ce1e16c870	3784	ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
emilmont	1:46ce1e16c870	3785	tbl[BS_DrvNum] = 0x80; /* Drive number */
emilmont	1:46ce1e16c870	3786	tbl[BS_BootSig] = 0x29; /* Extended boot signature */
emilmont	1:46ce1e16c870	3787	mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
emilmont	1:46ce1e16c870	3788	}
emilmont	1:46ce1e16c870	3789	ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
emilmont	1:46ce1e16c870	3790	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
emilmont	1:46ce1e16c870	3791	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3792	if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
emilmont	1:46ce1e16c870	3793	disk_write(pdrv, tbl, b_vol + 6, 1);
emilmont	1:46ce1e16c870	3794
emilmont	1:46ce1e16c870	3795	/* Initialize FAT area */
emilmont	1:46ce1e16c870	3796	wsect = b_fat;
emilmont	1:46ce1e16c870	3797	for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
emilmont	1:46ce1e16c870	3798	mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
emilmont	1:46ce1e16c870	3799	n = md; /* Media descriptor byte */
emilmont	1:46ce1e16c870	3800	if (fmt != FS_FAT32) {
emilmont	1:46ce1e16c870	3801	n \|= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
emilmont	1:46ce1e16c870	3802	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
emilmont	1:46ce1e16c870	3803	} else {
emilmont	1:46ce1e16c870	3804	n \|= 0xFFFFFF00;
emilmont	1:46ce1e16c870	3805	ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
emilmont	1:46ce1e16c870	3806	ST_DWORD(tbl+4, 0xFFFFFFFF);
emilmont	1:46ce1e16c870	3807	ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
emilmont	1:46ce1e16c870	3808	}
emilmont	1:46ce1e16c870	3809	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
emilmont	1:46ce1e16c870	3810	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3811	mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
emilmont	1:46ce1e16c870	3812	for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
emilmont	1:46ce1e16c870	3813	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
emilmont	1:46ce1e16c870	3814	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3815	}
emilmont	1:46ce1e16c870	3816	}
emilmont	1:46ce1e16c870	3817
emilmont	1:46ce1e16c870	3818	/* Initialize root directory */
emilmont	1:46ce1e16c870	3819	i = (fmt == FS_FAT32) ? au : n_dir;
emilmont	1:46ce1e16c870	3820	do {
emilmont	1:46ce1e16c870	3821	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
emilmont	1:46ce1e16c870	3822	return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3823	} while (--i);
emilmont	1:46ce1e16c870	3824
emilmont	1:46ce1e16c870	3825	#if _USE_ERASE /* Erase data area if needed */
emilmont	1:46ce1e16c870	3826	{
emilmont	1:46ce1e16c870	3827	DWORD eb[2];
emilmont	1:46ce1e16c870	3828
emilmont	1:46ce1e16c870	3829	eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
emilmont	1:46ce1e16c870	3830	disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb);
emilmont	1:46ce1e16c870	3831	}
emilmont	1:46ce1e16c870	3832	#endif
emilmont	1:46ce1e16c870	3833
emilmont	1:46ce1e16c870	3834	/* Create FSInfo if needed */
emilmont	1:46ce1e16c870	3835	if (fmt == FS_FAT32) {
emilmont	1:46ce1e16c870	3836	ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
emilmont	1:46ce1e16c870	3837	ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
emilmont	1:46ce1e16c870	3838	ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
emilmont	1:46ce1e16c870	3839	ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
emilmont	1:46ce1e16c870	3840	ST_WORD(tbl+BS_55AA, 0xAA55);
emilmont	1:46ce1e16c870	3841	disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
emilmont	1:46ce1e16c870	3842	disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
emilmont	1:46ce1e16c870	3843	}
emilmont	1:46ce1e16c870	3844
emilmont	1:46ce1e16c870	3845	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
emilmont	1:46ce1e16c870	3846	}
emilmont	1:46ce1e16c870	3847
emilmont	1:46ce1e16c870	3848
emilmont	1:46ce1e16c870	3849	#if _MULTI_PARTITION == 2
emilmont	1:46ce1e16c870	3850	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3851	/* Divide Physical Drive */
emilmont	1:46ce1e16c870	3852	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3853
emilmont	1:46ce1e16c870	3854	FRESULT f_fdisk (
emilmont	1:46ce1e16c870	3855	BYTE pdrv, /* Physical drive number */
emilmont	1:46ce1e16c870	3856	const DWORD szt[], /* Pointer to the size table for each partitions */
emilmont	1:46ce1e16c870	3857	void* work /* Pointer to the working buffer */
emilmont	1:46ce1e16c870	3858	)
emilmont	1:46ce1e16c870	3859	{
emilmont	1:46ce1e16c870	3860	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
emilmont	1:46ce1e16c870	3861	BYTE s_hd, e_hd, p, buf = (BYTE*)work;
emilmont	1:46ce1e16c870	3862	DSTATUS stat;
emilmont	1:46ce1e16c870	3863	DWORD sz_disk, sz_part, s_part;
emilmont	1:46ce1e16c870	3864
emilmont	1:46ce1e16c870	3865
emilmont	1:46ce1e16c870	3866	stat = disk_initialize(pdrv);
emilmont	1:46ce1e16c870	3867	if (stat & STA_NOINIT) return FR_NOT_READY;
emilmont	1:46ce1e16c870	3868	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
emilmont	1:46ce1e16c870	3869	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
emilmont	1:46ce1e16c870	3870
emilmont	1:46ce1e16c870	3871	/* Determine CHS in the table regardless of the drive geometry */
emilmont	1:46ce1e16c870	3872	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
emilmont	1:46ce1e16c870	3873	if (n == 256) n--;
emilmont	1:46ce1e16c870	3874	e_hd = n - 1;
emilmont	1:46ce1e16c870	3875	sz_cyl = 63 * n;
emilmont	1:46ce1e16c870	3876	tot_cyl = sz_disk / sz_cyl;
emilmont	1:46ce1e16c870	3877
emilmont	1:46ce1e16c870	3878	/* Create partition table */
emilmont	1:46ce1e16c870	3879	mem_set(buf, 0, _MAX_SS);
emilmont	1:46ce1e16c870	3880	p = buf + MBR_Table; b_cyl = 0;
emilmont	1:46ce1e16c870	3881	for (i = 0; i < 4; i++, p += SZ_PTE) {
emilmont	1:46ce1e16c870	3882	p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
emilmont	1:46ce1e16c870	3883	if (!p_cyl) continue;
emilmont	1:46ce1e16c870	3884	s_part = (DWORD)sz_cyl * b_cyl;
emilmont	1:46ce1e16c870	3885	sz_part = (DWORD)sz_cyl * p_cyl;
emilmont	1:46ce1e16c870	3886	if (i == 0) { /* Exclude first track of cylinder 0 */
emilmont	1:46ce1e16c870	3887	s_hd = 1;
emilmont	1:46ce1e16c870	3888	s_part += 63; sz_part -= 63;
emilmont	1:46ce1e16c870	3889	} else {
emilmont	1:46ce1e16c870	3890	s_hd = 0;
emilmont	1:46ce1e16c870	3891	}
emilmont	1:46ce1e16c870	3892	e_cyl = b_cyl + p_cyl - 1;
emilmont	1:46ce1e16c870	3893	if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
emilmont	1:46ce1e16c870	3894
emilmont	1:46ce1e16c870	3895	/* Set partition table */
emilmont	1:46ce1e16c870	3896	p[1] = s_hd; /* Start head */
emilmont	1:46ce1e16c870	3897	p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
emilmont	1:46ce1e16c870	3898	p[3] = (BYTE)b_cyl; /* Start cylinder */
emilmont	1:46ce1e16c870	3899	p[4] = 0x06; /* System type (temporary setting) */
emilmont	1:46ce1e16c870	3900	p[5] = e_hd; /* End head */
emilmont	1:46ce1e16c870	3901	p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
emilmont	1:46ce1e16c870	3902	p[7] = (BYTE)e_cyl; /* End cylinder */
emilmont	1:46ce1e16c870	3903	ST_DWORD(p + 8, s_part); /* Start sector in LBA */
emilmont	1:46ce1e16c870	3904	ST_DWORD(p + 12, sz_part); /* Partition size */
emilmont	1:46ce1e16c870	3905
emilmont	1:46ce1e16c870	3906	/* Next partition */
emilmont	1:46ce1e16c870	3907	b_cyl += p_cyl;
emilmont	1:46ce1e16c870	3908	}
emilmont	1:46ce1e16c870	3909	ST_WORD(p, 0xAA55);
emilmont	1:46ce1e16c870	3910
emilmont	1:46ce1e16c870	3911	/* Write it to the MBR */
emilmont	1:46ce1e16c870	3912	return (disk_write(pdrv, buf, 0, 1) \|\| disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK;
emilmont	1:46ce1e16c870	3913	}
emilmont	1:46ce1e16c870	3914
emilmont	1:46ce1e16c870	3915
emilmont	1:46ce1e16c870	3916	#endif /* _MULTI_PARTITION == 2 */
emilmont	1:46ce1e16c870	3917	#endif /* _USE_MKFS && !_FS_READONLY */
emilmont	1:46ce1e16c870	3918
emilmont	1:46ce1e16c870	3919
emilmont	1:46ce1e16c870	3920
emilmont	1:46ce1e16c870	3921
emilmont	1:46ce1e16c870	3922	#if _USE_STRFUNC
emilmont	1:46ce1e16c870	3923	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3924	/* Get a string from the file */
emilmont	1:46ce1e16c870	3925	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3926	TCHAR* f_gets (
emilmont	1:46ce1e16c870	3927	TCHAR* buff, /* Pointer to the string buffer to read */
emilmont	1:46ce1e16c870	3928	int len, /* Size of string buffer (characters) */
emilmont	1:46ce1e16c870	3929	FIL* fil /* Pointer to the file object */
emilmont	1:46ce1e16c870	3930	)
emilmont	1:46ce1e16c870	3931	{
emilmont	1:46ce1e16c870	3932	int n = 0;
emilmont	1:46ce1e16c870	3933	TCHAR c, *p = buff;
emilmont	1:46ce1e16c870	3934	BYTE s[2];
emilmont	1:46ce1e16c870	3935	UINT rc;
emilmont	1:46ce1e16c870	3936
emilmont	1:46ce1e16c870	3937
emilmont	1:46ce1e16c870	3938	while (n < len - 1) { /* Read bytes until buffer gets filled */
emilmont	1:46ce1e16c870	3939	f_read(fil, s, 1, &rc);
emilmont	1:46ce1e16c870	3940	if (rc != 1) break; /* Break on EOF or error */
emilmont	1:46ce1e16c870	3941	c = s[0];
emilmont	1:46ce1e16c870	3942	#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
emilmont	1:46ce1e16c870	3943	if (c >= 0x80) {
emilmont	1:46ce1e16c870	3944	if (c < 0xC0) continue; /* Skip stray trailer */
emilmont	1:46ce1e16c870	3945	if (c < 0xE0) { /* Two-byte sequence */
emilmont	1:46ce1e16c870	3946	f_read(fil, s, 1, &rc);
emilmont	1:46ce1e16c870	3947	if (rc != 1) break;
emilmont	1:46ce1e16c870	3948	c = ((c & 0x1F) << 6) \| (s[0] & 0x3F);
emilmont	1:46ce1e16c870	3949	if (c < 0x80) c = '?';
emilmont	1:46ce1e16c870	3950	} else {
emilmont	1:46ce1e16c870	3951	if (c < 0xF0) { /* Three-byte sequence */
emilmont	1:46ce1e16c870	3952	f_read(fil, s, 2, &rc);
emilmont	1:46ce1e16c870	3953	if (rc != 2) break;
emilmont	1:46ce1e16c870	3954	c = (c << 12) \| ((s[0] & 0x3F) << 6) \| (s[1] & 0x3F);
emilmont	1:46ce1e16c870	3955	if (c < 0x800) c = '?';
emilmont	1:46ce1e16c870	3956	} else { /* Reject four-byte sequence */
emilmont	1:46ce1e16c870	3957	c = '?';
emilmont	1:46ce1e16c870	3958	}
emilmont	1:46ce1e16c870	3959	}
emilmont	1:46ce1e16c870	3960	}
emilmont	1:46ce1e16c870	3961	#endif
emilmont	1:46ce1e16c870	3962	#if _USE_STRFUNC >= 2
emilmont	1:46ce1e16c870	3963	if (c == '\r') continue; /* Strip '\r' */
emilmont	1:46ce1e16c870	3964	#endif
emilmont	1:46ce1e16c870	3965	*p++ = c;
emilmont	1:46ce1e16c870	3966	n++;
emilmont	1:46ce1e16c870	3967	if (c == '\n') break; /* Break on EOL */
emilmont	1:46ce1e16c870	3968	}
emilmont	1:46ce1e16c870	3969	*p = 0;
emilmont	1:46ce1e16c870	3970	return n ? buff : 0; /* When no data read (eof or error), return with error. */
emilmont	1:46ce1e16c870	3971	}
emilmont	1:46ce1e16c870	3972
emilmont	1:46ce1e16c870	3973
emilmont	1:46ce1e16c870	3974
emilmont	1:46ce1e16c870	3975	#if !_FS_READONLY
emilmont	1:46ce1e16c870	3976	#include <stdarg.h>
emilmont	1:46ce1e16c870	3977	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3978	/* Put a character to the file */
emilmont	1:46ce1e16c870	3979	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	3980	int f_putc (
emilmont	1:46ce1e16c870	3981	TCHAR c, /* A character to be output */
emilmont	1:46ce1e16c870	3982	FIL* fil /* Pointer to the file object */
emilmont	1:46ce1e16c870	3983	)
emilmont	1:46ce1e16c870	3984	{
emilmont	1:46ce1e16c870	3985	UINT bw, btw;
emilmont	1:46ce1e16c870	3986	BYTE s[3];
emilmont	1:46ce1e16c870	3987
emilmont	1:46ce1e16c870	3988
emilmont	1:46ce1e16c870	3989	#if _USE_STRFUNC >= 2
emilmont	1:46ce1e16c870	3990	if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
emilmont	1:46ce1e16c870	3991	#endif
emilmont	1:46ce1e16c870	3992
emilmont	1:46ce1e16c870	3993	#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
emilmont	1:46ce1e16c870	3994	if (c < 0x80) { /* 7-bit */
emilmont	1:46ce1e16c870	3995	s[0] = (BYTE)c;
emilmont	1:46ce1e16c870	3996	btw = 1;
emilmont	1:46ce1e16c870	3997	} else {
emilmont	1:46ce1e16c870	3998	if (c < 0x800) { /* 11-bit */
emilmont	1:46ce1e16c870	3999	s[0] = (BYTE)(0xC0 \| (c >> 6));
emilmont	1:46ce1e16c870	4000	s[1] = (BYTE)(0x80 \| (c & 0x3F));
emilmont	1:46ce1e16c870	4001	btw = 2;
emilmont	1:46ce1e16c870	4002	} else { /* 16-bit */
emilmont	1:46ce1e16c870	4003	s[0] = (BYTE)(0xE0 \| (c >> 12));
emilmont	1:46ce1e16c870	4004	s[1] = (BYTE)(0x80 \| ((c >> 6) & 0x3F));
emilmont	1:46ce1e16c870	4005	s[2] = (BYTE)(0x80 \| (c & 0x3F));
emilmont	1:46ce1e16c870	4006	btw = 3;
emilmont	1:46ce1e16c870	4007	}
emilmont	1:46ce1e16c870	4008	}
emilmont	1:46ce1e16c870	4009	#else /* Write the character without conversion */
emilmont	1:46ce1e16c870	4010	s[0] = (BYTE)c;
emilmont	1:46ce1e16c870	4011	btw = 1;
emilmont	1:46ce1e16c870	4012	#endif
emilmont	1:46ce1e16c870	4013	f_write(fil, s, btw, &bw); /* Write the char to the file */
emilmont	1:46ce1e16c870	4014	return (bw == btw) ? 1 : EOF; /* Return the result */
emilmont	1:46ce1e16c870	4015	}
emilmont	1:46ce1e16c870	4016
emilmont	1:46ce1e16c870	4017
emilmont	1:46ce1e16c870	4018
emilmont	1:46ce1e16c870	4019
emilmont	1:46ce1e16c870	4020	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	4021	/* Put a string to the file */
emilmont	1:46ce1e16c870	4022	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	4023	int f_puts (
emilmont	1:46ce1e16c870	4024	const TCHAR* str, /* Pointer to the string to be output */
emilmont	1:46ce1e16c870	4025	FIL* fil /* Pointer to the file object */
emilmont	1:46ce1e16c870	4026	)
emilmont	1:46ce1e16c870	4027	{
emilmont	1:46ce1e16c870	4028	int n;
emilmont	1:46ce1e16c870	4029
emilmont	1:46ce1e16c870	4030
emilmont	1:46ce1e16c870	4031	for (n = 0; *str; str++, n++) {
emilmont	1:46ce1e16c870	4032	if (f_putc(*str, fil) == EOF) return EOF;
emilmont	1:46ce1e16c870	4033	}
emilmont	1:46ce1e16c870	4034	return n;
emilmont	1:46ce1e16c870	4035	}
emilmont	1:46ce1e16c870	4036
emilmont	1:46ce1e16c870	4037
emilmont	1:46ce1e16c870	4038
emilmont	1:46ce1e16c870	4039
emilmont	1:46ce1e16c870	4040	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	4041	/* Put a formatted string to the file */
emilmont	1:46ce1e16c870	4042	/-----------------------------------------------------------------------/
emilmont	1:46ce1e16c870	4043	int f_printf (
emilmont	1:46ce1e16c870	4044	FIL* fil, /* Pointer to the file object */
emilmont	1:46ce1e16c870	4045	const TCHAR* str, /* Pointer to the format string */
emilmont	1:46ce1e16c870	4046	... /* Optional arguments... */
emilmont	1:46ce1e16c870	4047	)
emilmont	1:46ce1e16c870	4048	{
emilmont	1:46ce1e16c870	4049	va_list arp;
emilmont	1:46ce1e16c870	4050	BYTE f, r;
emilmont	1:46ce1e16c870	4051	UINT i, j, w;
emilmont	1:46ce1e16c870	4052	ULONG v;
emilmont	1:46ce1e16c870	4053	TCHAR c, d, s[16], *p;
emilmont	1:46ce1e16c870	4054	int res, chc, cc;
emilmont	1:46ce1e16c870	4055
emilmont	1:46ce1e16c870	4056
emilmont	1:46ce1e16c870	4057	va_start(arp, str);
emilmont	1:46ce1e16c870	4058
emilmont	1:46ce1e16c870	4059	for (cc = res = 0; cc != EOF; res += cc) {
emilmont	1:46ce1e16c870	4060	c = *str++;
emilmont	1:46ce1e16c870	4061	if (c == 0) break; /* End of string */
emilmont	1:46ce1e16c870	4062	if (c != '%') { /* Non escape character */
emilmont	1:46ce1e16c870	4063	cc = f_putc(c, fil);
emilmont	1:46ce1e16c870	4064	if (cc != EOF) cc = 1;
emilmont	1:46ce1e16c870	4065	continue;
emilmont	1:46ce1e16c870	4066	}
emilmont	1:46ce1e16c870	4067	w = f = 0;
emilmont	1:46ce1e16c870	4068	c = *str++;
emilmont	1:46ce1e16c870	4069	if (c == '0') { /* Flag: '0' padding */
emilmont	1:46ce1e16c870	4070	f = 1; c = *str++;
emilmont	1:46ce1e16c870	4071	} else {
emilmont	1:46ce1e16c870	4072	if (c == '-') { /* Flag: left justified */
emilmont	1:46ce1e16c870	4073	f = 2; c = *str++;
emilmont	1:46ce1e16c870	4074	}
emilmont	1:46ce1e16c870	4075	}
emilmont	1:46ce1e16c870	4076	while (IsDigit(c)) { /* Precision */
emilmont	1:46ce1e16c870	4077	w = w * 10 + c - '0';
emilmont	1:46ce1e16c870	4078	c = *str++;
emilmont	1:46ce1e16c870	4079	}
emilmont	1:46ce1e16c870	4080	if (c == 'l' \|\| c == 'L') { /* Prefix: Size is long int */
emilmont	1:46ce1e16c870	4081	f \|= 4; c = *str++;
emilmont	1:46ce1e16c870	4082	}
emilmont	1:46ce1e16c870	4083	if (!c) break;
emilmont	1:46ce1e16c870	4084	d = c;
emilmont	1:46ce1e16c870	4085	if (IsLower(d)) d -= 0x20;
emilmont	1:46ce1e16c870	4086	switch (d) { /* Type is... */
emilmont	1:46ce1e16c870	4087	case 'S' : /* String */
emilmont	1:46ce1e16c870	4088	p = va_arg(arp, TCHAR*);
emilmont	1:46ce1e16c870	4089	for (j = 0; p[j]; j++) ;
emilmont	1:46ce1e16c870	4090	chc = 0;
emilmont	1:46ce1e16c870	4091	if (!(f & 2)) {
emilmont	1:46ce1e16c870	4092	while (j++ < w) chc += (cc = f_putc(' ', fil));
emilmont	1:46ce1e16c870	4093	}
emilmont	1:46ce1e16c870	4094	chc += (cc = f_puts(p, fil));
emilmont	1:46ce1e16c870	4095	while (j++ < w) chc += (cc = f_putc(' ', fil));
emilmont	1:46ce1e16c870	4096	if (cc != EOF) cc = chc;
emilmont	1:46ce1e16c870	4097	continue;
emilmont	1:46ce1e16c870	4098	case 'C' : /* Character */
emilmont	1:46ce1e16c870	4099	cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
emilmont	1:46ce1e16c870	4100	case 'B' : /* Binary */
emilmont	1:46ce1e16c870	4101	r = 2; break;
emilmont	1:46ce1e16c870	4102	case 'O' : /* Octal */
emilmont	1:46ce1e16c870	4103	r = 8; break;
emilmont	1:46ce1e16c870	4104	case 'D' : /* Signed decimal */
emilmont	1:46ce1e16c870	4105	case 'U' : /* Unsigned decimal */
emilmont	1:46ce1e16c870	4106	r = 10; break;
emilmont	1:46ce1e16c870	4107	case 'X' : /* Hexdecimal */
emilmont	1:46ce1e16c870	4108	r = 16; break;
emilmont	1:46ce1e16c870	4109	default: /* Unknown type (pass-through) */
emilmont	1:46ce1e16c870	4110	cc = f_putc(c, fil); continue;
emilmont	1:46ce1e16c870	4111	}
emilmont	1:46ce1e16c870	4112
emilmont	1:46ce1e16c870	4113	/* Get an argument and put it in numeral */
emilmont	1:46ce1e16c870	4114	v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int));
emilmont	1:46ce1e16c870	4115	if (d == 'D' && (v & 0x80000000)) {
emilmont	1:46ce1e16c870	4116	v = 0 - v;
emilmont	1:46ce1e16c870	4117	f \|= 8;
emilmont	1:46ce1e16c870	4118	}
emilmont	1:46ce1e16c870	4119	i = 0;
emilmont	1:46ce1e16c870	4120	do {
emilmont	1:46ce1e16c870	4121	d = (TCHAR)(v % r); v /= r;
emilmont	1:46ce1e16c870	4122	if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
emilmont	1:46ce1e16c870	4123	s[i++] = d + '0';
emilmont	1:46ce1e16c870	4124	} while (v && i < sizeof s / sizeof s[0]);
emilmont	1:46ce1e16c870	4125	if (f & 8) s[i++] = '-';
emilmont	1:46ce1e16c870	4126	j = i; d = (f & 1) ? '0' : ' ';
emilmont	1:46ce1e16c870	4127	res = 0;
emilmont	1:46ce1e16c870	4128	while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
emilmont	1:46ce1e16c870	4129	do res += (cc = f_putc(s[--i], fil)); while(i);
emilmont	1:46ce1e16c870	4130	while (j++ < w) res += (cc = f_putc(' ', fil));
emilmont	1:46ce1e16c870	4131	if (cc != EOF) cc = res;
emilmont	1:46ce1e16c870	4132	}
emilmont	1:46ce1e16c870	4133
emilmont	1:46ce1e16c870	4134	va_end(arp);
emilmont	1:46ce1e16c870	4135	return (cc == EOF) ? cc : res;
emilmont	1:46ce1e16c870	4136	}
emilmont	1:46ce1e16c870	4137
emilmont	1:46ce1e16c870	4138	#endif /* !_FS_READONLY */
emilmont	1:46ce1e16c870	4139	#endif /* _USE_STRFUNC */

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Type:	Library
Created:	30 Dec 2012
Imports:	16
Forks:	0
Commits:	4
Dependents:	3
Dependencies:	0
Followers:	5

This repository is Public (Unlisted).

The code in this repository is MIT licensed.

ChaN/ff.cpp@1:46ce1e16c870, 2012-11-27 (annotated)

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