4180_EditThis_copy_Demo_Test - help :(

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FFT LED Display / 4180_EditThis_copy_Demo_Test

help :(

Dependencies: FFT

FATFileSystem/ChaN/ff.cpp@11:951bbb0385aa, 2020-12-04 (annotated)

Committer:: dimitryjl23
Date:: Fri Dec 04 18:01:22 2020 +0000
Revision:: 11:951bbb0385aa
Parent:: 0:d6c9b09b4042

Final :)

Who changed what in which revision?

User	Revision	Line number	New contents of line
annieluo2	0:d6c9b09b4042	1	/*----------------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2	/ FatFs - FAT file system module R0.11a (C)ChaN, 2015 /
annieluo2	0:d6c9b09b4042	3	/-----------------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4	/ FatFs module is a free software that opened under license policy of
annieluo2	0:d6c9b09b4042	5	/ following conditions.
annieluo2	0:d6c9b09b4042	6	/
annieluo2	0:d6c9b09b4042	7	/ Copyright (C) 2015, ChaN, all right reserved.
annieluo2	0:d6c9b09b4042	8	/
annieluo2	0:d6c9b09b4042	9	/ 1. Redistributions of source code must retain the above copyright notice,
annieluo2	0:d6c9b09b4042	10	/ this condition and the following disclaimer.
annieluo2	0:d6c9b09b4042	11	/
annieluo2	0:d6c9b09b4042	12	/ This software is provided by the copyright holder and contributors "AS IS"
annieluo2	0:d6c9b09b4042	13	/ and any warranties related to this software are DISCLAIMED.
annieluo2	0:d6c9b09b4042	14	/ The copyright owner or contributors be NOT LIABLE for any damages caused
annieluo2	0:d6c9b09b4042	15	/ by use of this software.
annieluo2	0:d6c9b09b4042	16	/----------------------------------------------------------------------------*/
annieluo2	0:d6c9b09b4042	17
annieluo2	0:d6c9b09b4042	18
annieluo2	0:d6c9b09b4042	19	#include "ff.h" /* Declarations of FatFs API */
annieluo2	0:d6c9b09b4042	20	#include "diskio.h" /* Declarations of disk I/O functions */
annieluo2	0:d6c9b09b4042	21
annieluo2	0:d6c9b09b4042	22
annieluo2	0:d6c9b09b4042	23	/*--------------------------------------------------------------------------
annieluo2	0:d6c9b09b4042	24
annieluo2	0:d6c9b09b4042	25	Module Private Definitions
annieluo2	0:d6c9b09b4042	26
annieluo2	0:d6c9b09b4042	27	---------------------------------------------------------------------------*/
annieluo2	0:d6c9b09b4042	28
annieluo2	0:d6c9b09b4042	29	#if _FATFS != 64180 /* Revision ID */
annieluo2	0:d6c9b09b4042	30	#error Wrong include file (ff.h).
annieluo2	0:d6c9b09b4042	31	#endif
annieluo2	0:d6c9b09b4042	32
annieluo2	0:d6c9b09b4042	33
annieluo2	0:d6c9b09b4042	34	/* Reentrancy related */
annieluo2	0:d6c9b09b4042	35	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	36	#if _USE_LFN == 1
annieluo2	0:d6c9b09b4042	37	#error Static LFN work area cannot be used at thread-safe configuration
annieluo2	0:d6c9b09b4042	38	#endif
annieluo2	0:d6c9b09b4042	39	#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
annieluo2	0:d6c9b09b4042	40	#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
annieluo2	0:d6c9b09b4042	41	#else
annieluo2	0:d6c9b09b4042	42	#define ENTER_FF(fs)
annieluo2	0:d6c9b09b4042	43	#define LEAVE_FF(fs, res) return res
annieluo2	0:d6c9b09b4042	44	#endif
annieluo2	0:d6c9b09b4042	45
annieluo2	0:d6c9b09b4042	46	#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
annieluo2	0:d6c9b09b4042	47
annieluo2	0:d6c9b09b4042	48
annieluo2	0:d6c9b09b4042	49	/* Definitions of sector size */
annieluo2	0:d6c9b09b4042	50	#if (_MAX_SS < _MIN_SS) \|\| (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) \|\| (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)
annieluo2	0:d6c9b09b4042	51	#error Wrong sector size configuration
annieluo2	0:d6c9b09b4042	52	#endif
annieluo2	0:d6c9b09b4042	53	#if _MAX_SS == _MIN_SS
annieluo2	0:d6c9b09b4042	54	#define SS(fs) ((UINT)_MAX_SS) /* Fixed sector size */
annieluo2	0:d6c9b09b4042	55	#else
annieluo2	0:d6c9b09b4042	56	#define SS(fs) ((fs)->ssize) /* Variable sector size */
annieluo2	0:d6c9b09b4042	57	#endif
annieluo2	0:d6c9b09b4042	58
annieluo2	0:d6c9b09b4042	59
annieluo2	0:d6c9b09b4042	60	/* Timestamp feature */
annieluo2	0:d6c9b09b4042	61	#if _FS_NORTC == 1
annieluo2	0:d6c9b09b4042	62	#if _NORTC_YEAR < 1980 \|\| _NORTC_YEAR > 2107 \|\| _NORTC_MON < 1 \|\| _NORTC_MON > 12 \|\| _NORTC_MDAY < 1 \|\| _NORTC_MDAY > 31
annieluo2	0:d6c9b09b4042	63	#error Invalid _FS_NORTC settings
annieluo2	0:d6c9b09b4042	64	#endif
annieluo2	0:d6c9b09b4042	65	#define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 \| (DWORD)_NORTC_MON << 21 \| (DWORD)_NORTC_MDAY << 16)
annieluo2	0:d6c9b09b4042	66	#else
annieluo2	0:d6c9b09b4042	67	#define GET_FATTIME() get_fattime()
annieluo2	0:d6c9b09b4042	68	#endif
annieluo2	0:d6c9b09b4042	69
annieluo2	0:d6c9b09b4042	70
annieluo2	0:d6c9b09b4042	71	/* File access control feature */
annieluo2	0:d6c9b09b4042	72	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	73	#if _FS_READONLY
annieluo2	0:d6c9b09b4042	74	#error _FS_LOCK must be 0 at read-only configuration
annieluo2	0:d6c9b09b4042	75	#endif
annieluo2	0:d6c9b09b4042	76	typedef struct {
annieluo2	0:d6c9b09b4042	77	FATFS fs; / Object ID 1, volume (NULL:blank entry) */
annieluo2	0:d6c9b09b4042	78	DWORD clu; /* Object ID 2, directory (0:root) */
annieluo2	0:d6c9b09b4042	79	WORD idx; /* Object ID 3, directory index */
annieluo2	0:d6c9b09b4042	80	WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
annieluo2	0:d6c9b09b4042	81	} FILESEM;
annieluo2	0:d6c9b09b4042	82	#endif
annieluo2	0:d6c9b09b4042	83
annieluo2	0:d6c9b09b4042	84
annieluo2	0:d6c9b09b4042	85
annieluo2	0:d6c9b09b4042	86	/* DBCS code ranges and SBCS upper conversion tables */
annieluo2	0:d6c9b09b4042	87
annieluo2	0:d6c9b09b4042	88	#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
annieluo2	0:d6c9b09b4042	89	#define _DF1S 0x81 /* DBC 1st byte range 1 start */
annieluo2	0:d6c9b09b4042	90	#define _DF1E 0x9F /* DBC 1st byte range 1 end */
annieluo2	0:d6c9b09b4042	91	#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
annieluo2	0:d6c9b09b4042	92	#define _DF2E 0xFC /* DBC 1st byte range 2 end */
annieluo2	0:d6c9b09b4042	93	#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
annieluo2	0:d6c9b09b4042	94	#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
annieluo2	0:d6c9b09b4042	95	#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
annieluo2	0:d6c9b09b4042	96	#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
annieluo2	0:d6c9b09b4042	97
annieluo2	0:d6c9b09b4042	98	#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
annieluo2	0:d6c9b09b4042	99	#define _DF1S 0x81
annieluo2	0:d6c9b09b4042	100	#define _DF1E 0xFE
annieluo2	0:d6c9b09b4042	101	#define _DS1S 0x40
annieluo2	0:d6c9b09b4042	102	#define _DS1E 0x7E
annieluo2	0:d6c9b09b4042	103	#define _DS2S 0x80
annieluo2	0:d6c9b09b4042	104	#define _DS2E 0xFE
annieluo2	0:d6c9b09b4042	105
annieluo2	0:d6c9b09b4042	106	#elif _CODE_PAGE == 949 /* Korean */
annieluo2	0:d6c9b09b4042	107	#define _DF1S 0x81
annieluo2	0:d6c9b09b4042	108	#define _DF1E 0xFE
annieluo2	0:d6c9b09b4042	109	#define _DS1S 0x41
annieluo2	0:d6c9b09b4042	110	#define _DS1E 0x5A
annieluo2	0:d6c9b09b4042	111	#define _DS2S 0x61
annieluo2	0:d6c9b09b4042	112	#define _DS2E 0x7A
annieluo2	0:d6c9b09b4042	113	#define _DS3S 0x81
annieluo2	0:d6c9b09b4042	114	#define _DS3E 0xFE
annieluo2	0:d6c9b09b4042	115
annieluo2	0:d6c9b09b4042	116	#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
annieluo2	0:d6c9b09b4042	117	#define _DF1S 0x81
annieluo2	0:d6c9b09b4042	118	#define _DF1E 0xFE
annieluo2	0:d6c9b09b4042	119	#define _DS1S 0x40
annieluo2	0:d6c9b09b4042	120	#define _DS1E 0x7E
annieluo2	0:d6c9b09b4042	121	#define _DS2S 0xA1
annieluo2	0:d6c9b09b4042	122	#define _DS2E 0xFE
annieluo2	0:d6c9b09b4042	123
annieluo2	0:d6c9b09b4042	124	#elif _CODE_PAGE == 437 /* U.S. */
annieluo2	0:d6c9b09b4042	125	#define _DF1S 0
annieluo2	0:d6c9b09b4042	126	#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	127	0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	128	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	129	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	130	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	131	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	132	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	133	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	134
annieluo2	0:d6c9b09b4042	135	#elif _CODE_PAGE == 720 /* Arabic */
annieluo2	0:d6c9b09b4042	136	#define _DF1S 0
annieluo2	0:d6c9b09b4042	137	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	138	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	139	0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	140	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	141	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	142	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	143	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	144	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	145
annieluo2	0:d6c9b09b4042	146	#elif _CODE_PAGE == 737 /* Greek */
annieluo2	0:d6c9b09b4042	147	#define _DF1S 0
annieluo2	0:d6c9b09b4042	148	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	149	0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
annieluo2	0:d6c9b09b4042	150	0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
annieluo2	0:d6c9b09b4042	151	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	152	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	153	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	154	0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	155	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	156
annieluo2	0:d6c9b09b4042	157	#elif _CODE_PAGE == 771 /* KBL */
annieluo2	0:d6c9b09b4042	158	#define _DF1S 0
annieluo2	0:d6c9b09b4042	159	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	160	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	161	0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	162	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	163	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	164	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
annieluo2	0:d6c9b09b4042	165	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	166	0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	167
annieluo2	0:d6c9b09b4042	168	#elif _CODE_PAGE == 775 /* Baltic */
annieluo2	0:d6c9b09b4042	169	#define _DF1S 0
annieluo2	0:d6c9b09b4042	170	#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	171	0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	172	0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	173	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	174	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	175	0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	176	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	177	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	178
annieluo2	0:d6c9b09b4042	179	#elif _CODE_PAGE == 850 /* Latin 1 */
annieluo2	0:d6c9b09b4042	180	#define _DF1S 0
annieluo2	0:d6c9b09b4042	181	#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
annieluo2	0:d6c9b09b4042	182	0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	183	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	184	0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	185	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	186	0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
annieluo2	0:d6c9b09b4042	187	0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	188	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	189
annieluo2	0:d6c9b09b4042	190	#elif _CODE_PAGE == 852 /* Latin 2 */
annieluo2	0:d6c9b09b4042	191	#define _DF1S 0
annieluo2	0:d6c9b09b4042	192	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	193	0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
annieluo2	0:d6c9b09b4042	194	0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	195	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
annieluo2	0:d6c9b09b4042	196	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	197	0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	198	0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
annieluo2	0:d6c9b09b4042	199	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	200
annieluo2	0:d6c9b09b4042	201	#elif _CODE_PAGE == 855 /* Cyrillic */
annieluo2	0:d6c9b09b4042	202	#define _DF1S 0
annieluo2	0:d6c9b09b4042	203	#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
annieluo2	0:d6c9b09b4042	204	0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
annieluo2	0:d6c9b09b4042	205	0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	206	0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	207	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	208	0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
annieluo2	0:d6c9b09b4042	209	0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	210	0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	211
annieluo2	0:d6c9b09b4042	212	#elif _CODE_PAGE == 857 /* Turkish */
annieluo2	0:d6c9b09b4042	213	#define _DF1S 0
annieluo2	0:d6c9b09b4042	214	#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	215	0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
annieluo2	0:d6c9b09b4042	216	0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	217	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	218	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	219	0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	220	0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	221	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	222
annieluo2	0:d6c9b09b4042	223	#elif _CODE_PAGE == 860 /* Portuguese */
annieluo2	0:d6c9b09b4042	224	#define _DF1S 0
annieluo2	0:d6c9b09b4042	225	#define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	226	0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	227	0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	228	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	229	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	230	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	231	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	232	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	233
annieluo2	0:d6c9b09b4042	234	#elif _CODE_PAGE == 861 /* Icelandic */
annieluo2	0:d6c9b09b4042	235	#define _DF1S 0
annieluo2	0:d6c9b09b4042	236	#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	237	0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	238	0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	239	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	240	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	241	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	242	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	243	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	244
annieluo2	0:d6c9b09b4042	245	#elif _CODE_PAGE == 862 /* Hebrew */
annieluo2	0:d6c9b09b4042	246	#define _DF1S 0
annieluo2	0:d6c9b09b4042	247	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	248	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	249	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	250	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	251	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	252	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	253	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	254	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	255
annieluo2	0:d6c9b09b4042	256	#elif _CODE_PAGE == 863 /* Canadian-French */
annieluo2	0:d6c9b09b4042	257	#define _DF1S 0
annieluo2	0:d6c9b09b4042	258	#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
annieluo2	0:d6c9b09b4042	259	0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
annieluo2	0:d6c9b09b4042	260	0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	261	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	262	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	263	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	264	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	265	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	266
annieluo2	0:d6c9b09b4042	267	#elif _CODE_PAGE == 864 /* Arabic */
annieluo2	0:d6c9b09b4042	268	#define _DF1S 0
annieluo2	0:d6c9b09b4042	269	#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	270	0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	271	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	272	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	273	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	274	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	275	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	276	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	277
annieluo2	0:d6c9b09b4042	278	#elif _CODE_PAGE == 865 /* Nordic */
annieluo2	0:d6c9b09b4042	279	#define _DF1S 0
annieluo2	0:d6c9b09b4042	280	#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	281	0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	282	0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	283	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	284	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	285	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	286	0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
annieluo2	0:d6c9b09b4042	287	0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	288
annieluo2	0:d6c9b09b4042	289	#elif _CODE_PAGE == 866 /* Russian */
annieluo2	0:d6c9b09b4042	290	#define _DF1S 0
annieluo2	0:d6c9b09b4042	291	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	292	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	293	0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	294	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	295	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	296	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
annieluo2	0:d6c9b09b4042	297	0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
annieluo2	0:d6c9b09b4042	298	0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	299
annieluo2	0:d6c9b09b4042	300	#elif _CODE_PAGE == 869 /* Greek 2 */
annieluo2	0:d6c9b09b4042	301	#define _DF1S 0
annieluo2	0:d6c9b09b4042	302	#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
annieluo2	0:d6c9b09b4042	303	0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
annieluo2	0:d6c9b09b4042	304	0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
annieluo2	0:d6c9b09b4042	305	0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
annieluo2	0:d6c9b09b4042	306	0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
annieluo2	0:d6c9b09b4042	307	0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
annieluo2	0:d6c9b09b4042	308	0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
annieluo2	0:d6c9b09b4042	309	0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
annieluo2	0:d6c9b09b4042	310
annieluo2	0:d6c9b09b4042	311	#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
annieluo2	0:d6c9b09b4042	312	#if _USE_LFN
annieluo2	0:d6c9b09b4042	313	#error Cannot use LFN feature without valid code page.
annieluo2	0:d6c9b09b4042	314	#endif
annieluo2	0:d6c9b09b4042	315	#define _DF1S 0
annieluo2	0:d6c9b09b4042	316
annieluo2	0:d6c9b09b4042	317	#else
annieluo2	0:d6c9b09b4042	318	#error Unknown code page
annieluo2	0:d6c9b09b4042	319
annieluo2	0:d6c9b09b4042	320	#endif
annieluo2	0:d6c9b09b4042	321
annieluo2	0:d6c9b09b4042	322
annieluo2	0:d6c9b09b4042	323	/* Character code support macros */
annieluo2	0:d6c9b09b4042	324	#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
annieluo2	0:d6c9b09b4042	325	#define IsLower(c) (((c)>='a')&&((c)<='z'))
annieluo2	0:d6c9b09b4042	326	#define IsDigit(c) (((c)>='0')&&((c)<='9'))
annieluo2	0:d6c9b09b4042	327
annieluo2	0:d6c9b09b4042	328	#if _DF1S /* Code page is DBCS */
annieluo2	0:d6c9b09b4042	329
annieluo2	0:d6c9b09b4042	330	#ifdef _DF2S /* Two 1st byte areas */
annieluo2	0:d6c9b09b4042	331	#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) \|\| ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
annieluo2	0:d6c9b09b4042	332	#else /* One 1st byte area */
annieluo2	0:d6c9b09b4042	333	#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
annieluo2	0:d6c9b09b4042	334	#endif
annieluo2	0:d6c9b09b4042	335
annieluo2	0:d6c9b09b4042	336	#ifdef _DS3S /* Three 2nd byte areas */
annieluo2	0:d6c9b09b4042	337	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) \|\| ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
annieluo2	0:d6c9b09b4042	338	#else /* Two 2nd byte areas */
annieluo2	0:d6c9b09b4042	339	#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) \|\| ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
annieluo2	0:d6c9b09b4042	340	#endif
annieluo2	0:d6c9b09b4042	341
annieluo2	0:d6c9b09b4042	342	#else /* Code page is SBCS */
annieluo2	0:d6c9b09b4042	343
annieluo2	0:d6c9b09b4042	344	#define IsDBCS1(c) 0
annieluo2	0:d6c9b09b4042	345	#define IsDBCS2(c) 0
annieluo2	0:d6c9b09b4042	346
annieluo2	0:d6c9b09b4042	347	#endif /* _DF1S */
annieluo2	0:d6c9b09b4042	348
annieluo2	0:d6c9b09b4042	349
annieluo2	0:d6c9b09b4042	350	/* Name status flags */
annieluo2	0:d6c9b09b4042	351	#define NSFLAG 11 /* Index of name status byte in fn[] */
annieluo2	0:d6c9b09b4042	352	#define NS_LOSS 0x01 /* Out of 8.3 format */
annieluo2	0:d6c9b09b4042	353	#define NS_LFN 0x02 /* Force to create LFN entry */
annieluo2	0:d6c9b09b4042	354	#define NS_LAST 0x04 /* Last segment */
annieluo2	0:d6c9b09b4042	355	#define NS_BODY 0x08 /* Lower case flag (body) */
annieluo2	0:d6c9b09b4042	356	#define NS_EXT 0x10 /* Lower case flag (ext) */
annieluo2	0:d6c9b09b4042	357	#define NS_DOT 0x20 /* Dot entry */
annieluo2	0:d6c9b09b4042	358
annieluo2	0:d6c9b09b4042	359
annieluo2	0:d6c9b09b4042	360	/* FAT sub-type boundaries (Differ from specs but correct for real DOS/Windows) */
annieluo2	0:d6c9b09b4042	361	#define MIN_FAT16 4086U /* Minimum number of clusters of FAT16 */
annieluo2	0:d6c9b09b4042	362	#define MIN_FAT32 65526U /* Minimum number of clusters of FAT32 */
annieluo2	0:d6c9b09b4042	363
annieluo2	0:d6c9b09b4042	364
annieluo2	0:d6c9b09b4042	365	/* FatFs refers the members in the FAT structures as byte array instead of
annieluo2	0:d6c9b09b4042	366	/ structure members because the structure is not binary compatible between
annieluo2	0:d6c9b09b4042	367	/ different platforms */
annieluo2	0:d6c9b09b4042	368
annieluo2	0:d6c9b09b4042	369	#define BS_jmpBoot 0 /* x86 jump instruction (3) */
annieluo2	0:d6c9b09b4042	370	#define BS_OEMName 3 /* OEM name (8) */
annieluo2	0:d6c9b09b4042	371	#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
annieluo2	0:d6c9b09b4042	372	#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
annieluo2	0:d6c9b09b4042	373	#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
annieluo2	0:d6c9b09b4042	374	#define BPB_NumFATs 16 /* Number of FAT copies (1) */
annieluo2	0:d6c9b09b4042	375	#define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */
annieluo2	0:d6c9b09b4042	376	#define BPB_TotSec16 19 /* Volume size [sector] (2) */
annieluo2	0:d6c9b09b4042	377	#define BPB_Media 21 /* Media descriptor (1) */
annieluo2	0:d6c9b09b4042	378	#define BPB_FATSz16 22 /* FAT size [sector] (2) */
annieluo2	0:d6c9b09b4042	379	#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
annieluo2	0:d6c9b09b4042	380	#define BPB_NumHeads 26 /* Number of heads (2) */
annieluo2	0:d6c9b09b4042	381	#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
annieluo2	0:d6c9b09b4042	382	#define BPB_TotSec32 32 /* Volume size [sector] (4) */
annieluo2	0:d6c9b09b4042	383	#define BS_DrvNum 36 /* Physical drive number (1) */
annieluo2	0:d6c9b09b4042	384	#define BS_NTres 37 /* Error flag (1) */
annieluo2	0:d6c9b09b4042	385	#define BS_BootSig 38 /* Extended boot signature (1) */
annieluo2	0:d6c9b09b4042	386	#define BS_VolID 39 /* Volume serial number (4) */
annieluo2	0:d6c9b09b4042	387	#define BS_VolLab 43 /* Volume label (8) */
annieluo2	0:d6c9b09b4042	388	#define BS_FilSysType 54 /* File system type (1) */
annieluo2	0:d6c9b09b4042	389	#define BPB_FATSz32 36 /* FAT size [sector] (4) */
annieluo2	0:d6c9b09b4042	390	#define BPB_ExtFlags 40 /* Extended flags (2) */
annieluo2	0:d6c9b09b4042	391	#define BPB_FSVer 42 /* File system version (2) */
annieluo2	0:d6c9b09b4042	392	#define BPB_RootClus 44 /* Root directory first cluster (4) */
annieluo2	0:d6c9b09b4042	393	#define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */
annieluo2	0:d6c9b09b4042	394	#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
annieluo2	0:d6c9b09b4042	395	#define BS_DrvNum32 64 /* Physical drive number (1) */
annieluo2	0:d6c9b09b4042	396	#define BS_NTres32 65 /* Error flag (1) */
annieluo2	0:d6c9b09b4042	397	#define BS_BootSig32 66 /* Extended boot signature (1) */
annieluo2	0:d6c9b09b4042	398	#define BS_VolID32 67 /* Volume serial number (4) */
annieluo2	0:d6c9b09b4042	399	#define BS_VolLab32 71 /* Volume label (8) */
annieluo2	0:d6c9b09b4042	400	#define BS_FilSysType32 82 /* File system type (1) */
annieluo2	0:d6c9b09b4042	401	#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
annieluo2	0:d6c9b09b4042	402	#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
annieluo2	0:d6c9b09b4042	403	#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
annieluo2	0:d6c9b09b4042	404	#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
annieluo2	0:d6c9b09b4042	405	#define MBR_Table 446 /* MBR: Partition table offset (2) */
annieluo2	0:d6c9b09b4042	406	#define SZ_PTE 16 /* MBR: Size of a partition table entry */
annieluo2	0:d6c9b09b4042	407	#define BS_55AA 510 /* Signature word (2) */
annieluo2	0:d6c9b09b4042	408
annieluo2	0:d6c9b09b4042	409	#define DIR_Name 0 /* Short file name (11) */
annieluo2	0:d6c9b09b4042	410	#define DIR_Attr 11 /* Attribute (1) */
annieluo2	0:d6c9b09b4042	411	#define DIR_NTres 12 /* Lower case flag (1) */
annieluo2	0:d6c9b09b4042	412	#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
annieluo2	0:d6c9b09b4042	413	#define DIR_CrtTime 14 /* Created time (2) */
annieluo2	0:d6c9b09b4042	414	#define DIR_CrtDate 16 /* Created date (2) */
annieluo2	0:d6c9b09b4042	415	#define DIR_LstAccDate 18 /* Last accessed date (2) */
annieluo2	0:d6c9b09b4042	416	#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
annieluo2	0:d6c9b09b4042	417	#define DIR_WrtTime 22 /* Modified time (2) */
annieluo2	0:d6c9b09b4042	418	#define DIR_WrtDate 24 /* Modified date (2) */
annieluo2	0:d6c9b09b4042	419	#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
annieluo2	0:d6c9b09b4042	420	#define DIR_FileSize 28 /* File size (4) */
annieluo2	0:d6c9b09b4042	421	#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
annieluo2	0:d6c9b09b4042	422	#define LDIR_Attr 11 /* LFN attribute (1) */
annieluo2	0:d6c9b09b4042	423	#define LDIR_Type 12 /* LFN type (1) */
annieluo2	0:d6c9b09b4042	424	#define LDIR_Chksum 13 /* Checksum of corresponding SFN entry */
annieluo2	0:d6c9b09b4042	425	#define LDIR_FstClusLO 26 /* Must be zero (0) */
annieluo2	0:d6c9b09b4042	426	#define SZ_DIRE 32 /* Size of a directory entry */
annieluo2	0:d6c9b09b4042	427	#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
annieluo2	0:d6c9b09b4042	428	#define DDEM 0xE5 /* Deleted directory entry mark at DIR_Name[0] */
annieluo2	0:d6c9b09b4042	429	#define RDDEM 0x05 /* Replacement of the character collides with DDEM */
annieluo2	0:d6c9b09b4042	430
annieluo2	0:d6c9b09b4042	431
annieluo2	0:d6c9b09b4042	432
annieluo2	0:d6c9b09b4042	433
annieluo2	0:d6c9b09b4042	434	/*--------------------------------------------------------------------------
annieluo2	0:d6c9b09b4042	435
annieluo2	0:d6c9b09b4042	436	Module Private Work Area
annieluo2	0:d6c9b09b4042	437
annieluo2	0:d6c9b09b4042	438	---------------------------------------------------------------------------*/
annieluo2	0:d6c9b09b4042	439
annieluo2	0:d6c9b09b4042	440	/* Remark: Uninitialized variables with static duration are guaranteed
annieluo2	0:d6c9b09b4042	441	/ zero/null at start-up. If not, either the linker or start-up routine
annieluo2	0:d6c9b09b4042	442	/ being used is not compliance with ANSI-C standard.
annieluo2	0:d6c9b09b4042	443	*/
annieluo2	0:d6c9b09b4042	444
annieluo2	0:d6c9b09b4042	445	#if _VOLUMES < 1 \|\| _VOLUMES > 9
annieluo2	0:d6c9b09b4042	446	#error Wrong _VOLUMES setting
annieluo2	0:d6c9b09b4042	447	#endif
annieluo2	0:d6c9b09b4042	448	static FATFS FatFs[_VOLUMES]; / Pointer to the file system objects (logical drives) */
annieluo2	0:d6c9b09b4042	449	static WORD Fsid; /* File system mount ID */
annieluo2	0:d6c9b09b4042	450
annieluo2	0:d6c9b09b4042	451	#if _FS_RPATH && _VOLUMES >= 2
annieluo2	0:d6c9b09b4042	452	static BYTE CurrVol; /* Current drive */
annieluo2	0:d6c9b09b4042	453	#endif
annieluo2	0:d6c9b09b4042	454
annieluo2	0:d6c9b09b4042	455	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	456	static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
annieluo2	0:d6c9b09b4042	457	#endif
annieluo2	0:d6c9b09b4042	458
annieluo2	0:d6c9b09b4042	459	#if _USE_LFN == 0 /* Non LFN feature */
annieluo2	0:d6c9b09b4042	460	#define DEFINE_NAMEBUF BYTE sfn[12]
annieluo2	0:d6c9b09b4042	461	#define INIT_BUF(dobj) (dobj).fn = sfn
annieluo2	0:d6c9b09b4042	462	#define FREE_BUF()
annieluo2	0:d6c9b09b4042	463	#else
annieluo2	0:d6c9b09b4042	464	#if _MAX_LFN < 12 \|\| _MAX_LFN > 255
annieluo2	0:d6c9b09b4042	465	#error Wrong _MAX_LFN setting
annieluo2	0:d6c9b09b4042	466	#endif
annieluo2	0:d6c9b09b4042	467	#if _USE_LFN == 1 /* LFN feature with static working buffer */
annieluo2	0:d6c9b09b4042	468	static WCHAR LfnBuf[_MAX_LFN + 1];
annieluo2	0:d6c9b09b4042	469	#define DEFINE_NAMEBUF BYTE sfn[12]
annieluo2	0:d6c9b09b4042	470	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
annieluo2	0:d6c9b09b4042	471	#define FREE_BUF()
annieluo2	0:d6c9b09b4042	472	#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
annieluo2	0:d6c9b09b4042	473	#define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
annieluo2	0:d6c9b09b4042	474	#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
annieluo2	0:d6c9b09b4042	475	#define FREE_BUF()
annieluo2	0:d6c9b09b4042	476	#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
annieluo2	0:d6c9b09b4042	477	#define DEFINE_NAMEBUF BYTE sfn[12]; WCHAR *lfn
annieluo2	0:d6c9b09b4042	478	#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); (dobj).lfn = lfn; (dobj).fn = sfn; }
annieluo2	0:d6c9b09b4042	479	#define FREE_BUF() ff_memfree(lfn)
annieluo2	0:d6c9b09b4042	480	#else
annieluo2	0:d6c9b09b4042	481	#error Wrong _USE_LFN setting
annieluo2	0:d6c9b09b4042	482	#endif
annieluo2	0:d6c9b09b4042	483	#endif
annieluo2	0:d6c9b09b4042	484
annieluo2	0:d6c9b09b4042	485	#ifdef _EXCVT
annieluo2	0:d6c9b09b4042	486	static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
annieluo2	0:d6c9b09b4042	487	#endif
annieluo2	0:d6c9b09b4042	488
annieluo2	0:d6c9b09b4042	489
annieluo2	0:d6c9b09b4042	490
annieluo2	0:d6c9b09b4042	491
annieluo2	0:d6c9b09b4042	492
annieluo2	0:d6c9b09b4042	493
annieluo2	0:d6c9b09b4042	494	/*--------------------------------------------------------------------------
annieluo2	0:d6c9b09b4042	495
annieluo2	0:d6c9b09b4042	496	Module Private Functions
annieluo2	0:d6c9b09b4042	497
annieluo2	0:d6c9b09b4042	498	---------------------------------------------------------------------------*/
annieluo2	0:d6c9b09b4042	499
annieluo2	0:d6c9b09b4042	500
annieluo2	0:d6c9b09b4042	501	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	502	/* String functions */
annieluo2	0:d6c9b09b4042	503	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	504
annieluo2	0:d6c9b09b4042	505	/* Copy memory to memory */
annieluo2	0:d6c9b09b4042	506	static
annieluo2	0:d6c9b09b4042	507	void mem_cpy (void* dst, const void* src, UINT cnt) {
annieluo2	0:d6c9b09b4042	508	BYTE d = (BYTE)dst;
annieluo2	0:d6c9b09b4042	509	const BYTE s = (const BYTE)src;
annieluo2	0:d6c9b09b4042	510
annieluo2	0:d6c9b09b4042	511	#if _WORD_ACCESS == 1
annieluo2	0:d6c9b09b4042	512	while (cnt >= sizeof (int)) {
annieluo2	0:d6c9b09b4042	513	(int)d = (int)s;
annieluo2	0:d6c9b09b4042	514	d += sizeof (int); s += sizeof (int);
annieluo2	0:d6c9b09b4042	515	cnt -= sizeof (int);
annieluo2	0:d6c9b09b4042	516	}
annieluo2	0:d6c9b09b4042	517	#endif
annieluo2	0:d6c9b09b4042	518	while (cnt--)
annieluo2	0:d6c9b09b4042	519	d++ = s++;
annieluo2	0:d6c9b09b4042	520	}
annieluo2	0:d6c9b09b4042	521
annieluo2	0:d6c9b09b4042	522	/* Fill memory */
annieluo2	0:d6c9b09b4042	523	static
annieluo2	0:d6c9b09b4042	524	void mem_set (void* dst, int val, UINT cnt) {
annieluo2	0:d6c9b09b4042	525	BYTE d = (BYTE)dst;
annieluo2	0:d6c9b09b4042	526
annieluo2	0:d6c9b09b4042	527	while (cnt--)
annieluo2	0:d6c9b09b4042	528	*d++ = (BYTE)val;
annieluo2	0:d6c9b09b4042	529	}
annieluo2	0:d6c9b09b4042	530
annieluo2	0:d6c9b09b4042	531	/* Compare memory to memory */
annieluo2	0:d6c9b09b4042	532	static
annieluo2	0:d6c9b09b4042	533	int mem_cmp (const void* dst, const void* src, UINT cnt) {
annieluo2	0:d6c9b09b4042	534	const BYTE d = (const BYTE )dst, s = (const BYTE )src;
annieluo2	0:d6c9b09b4042	535	int r = 0;
annieluo2	0:d6c9b09b4042	536
annieluo2	0:d6c9b09b4042	537	while (cnt-- && (r = d++ - s++) == 0) ;
annieluo2	0:d6c9b09b4042	538	return r;
annieluo2	0:d6c9b09b4042	539	}
annieluo2	0:d6c9b09b4042	540
annieluo2	0:d6c9b09b4042	541	/* Check if chr is contained in the string */
annieluo2	0:d6c9b09b4042	542	static
annieluo2	0:d6c9b09b4042	543	int chk_chr (const char* str, int chr) {
annieluo2	0:d6c9b09b4042	544	while (str && str != chr) str++;
annieluo2	0:d6c9b09b4042	545	return *str;
annieluo2	0:d6c9b09b4042	546	}
annieluo2	0:d6c9b09b4042	547
annieluo2	0:d6c9b09b4042	548
annieluo2	0:d6c9b09b4042	549
annieluo2	0:d6c9b09b4042	550
annieluo2	0:d6c9b09b4042	551	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	552	/* Request/Release grant to access the volume */
annieluo2	0:d6c9b09b4042	553	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	554	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	555	static
annieluo2	0:d6c9b09b4042	556	int lock_fs (
annieluo2	0:d6c9b09b4042	557	FATFS* fs /* File system object */
annieluo2	0:d6c9b09b4042	558	)
annieluo2	0:d6c9b09b4042	559	{
annieluo2	0:d6c9b09b4042	560	return ff_req_grant(fs->sobj);
annieluo2	0:d6c9b09b4042	561	}
annieluo2	0:d6c9b09b4042	562
annieluo2	0:d6c9b09b4042	563
annieluo2	0:d6c9b09b4042	564	static
annieluo2	0:d6c9b09b4042	565	void unlock_fs (
annieluo2	0:d6c9b09b4042	566	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	567	FRESULT res /* Result code to be returned */
annieluo2	0:d6c9b09b4042	568	)
annieluo2	0:d6c9b09b4042	569	{
annieluo2	0:d6c9b09b4042	570	if (fs &&
annieluo2	0:d6c9b09b4042	571	res != FR_NOT_ENABLED &&
annieluo2	0:d6c9b09b4042	572	res != FR_INVALID_DRIVE &&
annieluo2	0:d6c9b09b4042	573	res != FR_INVALID_OBJECT &&
annieluo2	0:d6c9b09b4042	574	res != FR_TIMEOUT) {
annieluo2	0:d6c9b09b4042	575	ff_rel_grant(fs->sobj);
annieluo2	0:d6c9b09b4042	576	}
annieluo2	0:d6c9b09b4042	577	}
annieluo2	0:d6c9b09b4042	578	#endif
annieluo2	0:d6c9b09b4042	579
annieluo2	0:d6c9b09b4042	580
annieluo2	0:d6c9b09b4042	581
annieluo2	0:d6c9b09b4042	582
annieluo2	0:d6c9b09b4042	583	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	584	/* File lock control functions */
annieluo2	0:d6c9b09b4042	585	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	586	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	587
annieluo2	0:d6c9b09b4042	588	static
annieluo2	0:d6c9b09b4042	589	FRESULT chk_lock ( /* Check if the file can be accessed */
annieluo2	0:d6c9b09b4042	590	FATFS_DIR* dp, /* Directory object pointing the file to be checked */
annieluo2	0:d6c9b09b4042	591	int acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
annieluo2	0:d6c9b09b4042	592	)
annieluo2	0:d6c9b09b4042	593	{
annieluo2	0:d6c9b09b4042	594	UINT i, be;
annieluo2	0:d6c9b09b4042	595
annieluo2	0:d6c9b09b4042	596	/* Search file semaphore table */
annieluo2	0:d6c9b09b4042	597	for (i = be = 0; i < _FS_LOCK; i++) {
annieluo2	0:d6c9b09b4042	598	if (Files[i].fs) { /* Existing entry */
annieluo2	0:d6c9b09b4042	599	if (Files[i].fs == dp->fs && /* Check if the object matched with an open object */
annieluo2	0:d6c9b09b4042	600	Files[i].clu == dp->sclust &&
annieluo2	0:d6c9b09b4042	601	Files[i].idx == dp->index) break;
annieluo2	0:d6c9b09b4042	602	} else { /* Blank entry */
annieluo2	0:d6c9b09b4042	603	be = 1;
annieluo2	0:d6c9b09b4042	604	}
annieluo2	0:d6c9b09b4042	605	}
annieluo2	0:d6c9b09b4042	606	if (i == _FS_LOCK) /* The object is not opened */
annieluo2	0:d6c9b09b4042	607	return (be \|\| acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */
annieluo2	0:d6c9b09b4042	608
annieluo2	0:d6c9b09b4042	609	/* The object has been opened. Reject any open against writing file and all write mode open */
annieluo2	0:d6c9b09b4042	610	return (acc \|\| Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
annieluo2	0:d6c9b09b4042	611	}
annieluo2	0:d6c9b09b4042	612
annieluo2	0:d6c9b09b4042	613
annieluo2	0:d6c9b09b4042	614	static
annieluo2	0:d6c9b09b4042	615	int enq_lock (void) /* Check if an entry is available for a new object */
annieluo2	0:d6c9b09b4042	616	{
annieluo2	0:d6c9b09b4042	617	UINT i;
annieluo2	0:d6c9b09b4042	618
annieluo2	0:d6c9b09b4042	619	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
annieluo2	0:d6c9b09b4042	620	return (i == _FS_LOCK) ? 0 : 1;
annieluo2	0:d6c9b09b4042	621	}
annieluo2	0:d6c9b09b4042	622
annieluo2	0:d6c9b09b4042	623
annieluo2	0:d6c9b09b4042	624	static
annieluo2	0:d6c9b09b4042	625	UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
annieluo2	0:d6c9b09b4042	626	FATFS_DIR* dp, /* Directory object pointing the file to register or increment */
annieluo2	0:d6c9b09b4042	627	int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
annieluo2	0:d6c9b09b4042	628	)
annieluo2	0:d6c9b09b4042	629	{
annieluo2	0:d6c9b09b4042	630	UINT i;
annieluo2	0:d6c9b09b4042	631
annieluo2	0:d6c9b09b4042	632
annieluo2	0:d6c9b09b4042	633	for (i = 0; i < _FS_LOCK; i++) { /* Find the object */
annieluo2	0:d6c9b09b4042	634	if (Files[i].fs == dp->fs &&
annieluo2	0:d6c9b09b4042	635	Files[i].clu == dp->sclust &&
annieluo2	0:d6c9b09b4042	636	Files[i].idx == dp->index) break;
annieluo2	0:d6c9b09b4042	637	}
annieluo2	0:d6c9b09b4042	638
annieluo2	0:d6c9b09b4042	639	if (i == _FS_LOCK) { /* Not opened. Register it as new. */
annieluo2	0:d6c9b09b4042	640	for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
annieluo2	0:d6c9b09b4042	641	if (i == _FS_LOCK) return 0; /* No free entry to register (int err) */
annieluo2	0:d6c9b09b4042	642	Files[i].fs = dp->fs;
annieluo2	0:d6c9b09b4042	643	Files[i].clu = dp->sclust;
annieluo2	0:d6c9b09b4042	644	Files[i].idx = dp->index;
annieluo2	0:d6c9b09b4042	645	Files[i].ctr = 0;
annieluo2	0:d6c9b09b4042	646	}
annieluo2	0:d6c9b09b4042	647
annieluo2	0:d6c9b09b4042	648	if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
annieluo2	0:d6c9b09b4042	649
annieluo2	0:d6c9b09b4042	650	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
annieluo2	0:d6c9b09b4042	651
annieluo2	0:d6c9b09b4042	652	return i + 1;
annieluo2	0:d6c9b09b4042	653	}
annieluo2	0:d6c9b09b4042	654
annieluo2	0:d6c9b09b4042	655
annieluo2	0:d6c9b09b4042	656	static
annieluo2	0:d6c9b09b4042	657	FRESULT dec_lock ( /* Decrement object open counter */
annieluo2	0:d6c9b09b4042	658	UINT i /* Semaphore index (1..) */
annieluo2	0:d6c9b09b4042	659	)
annieluo2	0:d6c9b09b4042	660	{
annieluo2	0:d6c9b09b4042	661	WORD n;
annieluo2	0:d6c9b09b4042	662	FRESULT res;
annieluo2	0:d6c9b09b4042	663
annieluo2	0:d6c9b09b4042	664
annieluo2	0:d6c9b09b4042	665	if (--i < _FS_LOCK) { /* Shift index number origin from 0 */
annieluo2	0:d6c9b09b4042	666	n = Files[i].ctr;
annieluo2	0:d6c9b09b4042	667	if (n == 0x100) n = 0; /* If write mode open, delete the entry */
annieluo2	0:d6c9b09b4042	668	if (n) n--; /* Decrement read mode open count */
annieluo2	0:d6c9b09b4042	669	Files[i].ctr = n;
annieluo2	0:d6c9b09b4042	670	if (!n) Files[i].fs = 0; /* Delete the entry if open count gets zero */
annieluo2	0:d6c9b09b4042	671	res = FR_OK;
annieluo2	0:d6c9b09b4042	672	} else {
annieluo2	0:d6c9b09b4042	673	res = FR_INT_ERR; /* Invalid index nunber */
annieluo2	0:d6c9b09b4042	674	}
annieluo2	0:d6c9b09b4042	675	return res;
annieluo2	0:d6c9b09b4042	676	}
annieluo2	0:d6c9b09b4042	677
annieluo2	0:d6c9b09b4042	678
annieluo2	0:d6c9b09b4042	679	static
annieluo2	0:d6c9b09b4042	680	void clear_lock ( /* Clear lock entries of the volume */
annieluo2	0:d6c9b09b4042	681	FATFS *fs
annieluo2	0:d6c9b09b4042	682	)
annieluo2	0:d6c9b09b4042	683	{
annieluo2	0:d6c9b09b4042	684	UINT i;
annieluo2	0:d6c9b09b4042	685
annieluo2	0:d6c9b09b4042	686	for (i = 0; i < _FS_LOCK; i++) {
annieluo2	0:d6c9b09b4042	687	if (Files[i].fs == fs) Files[i].fs = 0;
annieluo2	0:d6c9b09b4042	688	}
annieluo2	0:d6c9b09b4042	689	}
annieluo2	0:d6c9b09b4042	690	#endif
annieluo2	0:d6c9b09b4042	691
annieluo2	0:d6c9b09b4042	692
annieluo2	0:d6c9b09b4042	693
annieluo2	0:d6c9b09b4042	694
annieluo2	0:d6c9b09b4042	695	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	696	/* Move/Flush disk access window in the file system object */
annieluo2	0:d6c9b09b4042	697	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	698	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	699	static
annieluo2	0:d6c9b09b4042	700	FRESULT sync_window ( /* FR_OK:succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	701	FATFS* fs /* File system object */
annieluo2	0:d6c9b09b4042	702	)
annieluo2	0:d6c9b09b4042	703	{
annieluo2	0:d6c9b09b4042	704	DWORD wsect;
annieluo2	0:d6c9b09b4042	705	UINT nf;
annieluo2	0:d6c9b09b4042	706	FRESULT res = FR_OK;
annieluo2	0:d6c9b09b4042	707
annieluo2	0:d6c9b09b4042	708
annieluo2	0:d6c9b09b4042	709	if (fs->wflag) { /* Write back the sector if it is dirty */
annieluo2	0:d6c9b09b4042	710	wsect = fs->winsect; /* Current sector number */
annieluo2	0:d6c9b09b4042	711	if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
annieluo2	0:d6c9b09b4042	712	res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	713	} else {
annieluo2	0:d6c9b09b4042	714	fs->wflag = 0;
annieluo2	0:d6c9b09b4042	715	if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */
annieluo2	0:d6c9b09b4042	716	for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */
annieluo2	0:d6c9b09b4042	717	wsect += fs->fsize;
annieluo2	0:d6c9b09b4042	718	disk_write(fs->drv, fs->win, wsect, 1);
annieluo2	0:d6c9b09b4042	719	}
annieluo2	0:d6c9b09b4042	720	}
annieluo2	0:d6c9b09b4042	721	}
annieluo2	0:d6c9b09b4042	722	}
annieluo2	0:d6c9b09b4042	723	return res;
annieluo2	0:d6c9b09b4042	724	}
annieluo2	0:d6c9b09b4042	725	#endif
annieluo2	0:d6c9b09b4042	726
annieluo2	0:d6c9b09b4042	727
annieluo2	0:d6c9b09b4042	728	static
annieluo2	0:d6c9b09b4042	729	FRESULT move_window ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	730	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	731	DWORD sector /* Sector number to make appearance in the fs->win[] */
annieluo2	0:d6c9b09b4042	732	)
annieluo2	0:d6c9b09b4042	733	{
annieluo2	0:d6c9b09b4042	734	FRESULT res = FR_OK;
annieluo2	0:d6c9b09b4042	735
annieluo2	0:d6c9b09b4042	736
annieluo2	0:d6c9b09b4042	737	if (sector != fs->winsect) { /* Window offset changed? */
annieluo2	0:d6c9b09b4042	738	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	739	res = sync_window(fs); /* Write-back changes */
annieluo2	0:d6c9b09b4042	740	#endif
annieluo2	0:d6c9b09b4042	741	if (res == FR_OK) { /* Fill sector window with new data */
annieluo2	0:d6c9b09b4042	742	if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
annieluo2	0:d6c9b09b4042	743	sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */
annieluo2	0:d6c9b09b4042	744	res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	745	}
annieluo2	0:d6c9b09b4042	746	fs->winsect = sector;
annieluo2	0:d6c9b09b4042	747	}
annieluo2	0:d6c9b09b4042	748	}
annieluo2	0:d6c9b09b4042	749	return res;
annieluo2	0:d6c9b09b4042	750	}
annieluo2	0:d6c9b09b4042	751
annieluo2	0:d6c9b09b4042	752
annieluo2	0:d6c9b09b4042	753
annieluo2	0:d6c9b09b4042	754
annieluo2	0:d6c9b09b4042	755	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	756	/* Synchronize file system and strage device */
annieluo2	0:d6c9b09b4042	757	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	758	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	759	static
annieluo2	0:d6c9b09b4042	760	FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	761	FATFS* fs /* File system object */
annieluo2	0:d6c9b09b4042	762	)
annieluo2	0:d6c9b09b4042	763	{
annieluo2	0:d6c9b09b4042	764	FRESULT res;
annieluo2	0:d6c9b09b4042	765
annieluo2	0:d6c9b09b4042	766
annieluo2	0:d6c9b09b4042	767	res = sync_window(fs);
annieluo2	0:d6c9b09b4042	768	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	769	/* Update FSInfo sector if needed */
annieluo2	0:d6c9b09b4042	770	if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
annieluo2	0:d6c9b09b4042	771	/* Create FSInfo structure */
annieluo2	0:d6c9b09b4042	772	mem_set(fs->win, 0, SS(fs));
annieluo2	0:d6c9b09b4042	773	ST_WORD(fs->win + BS_55AA, 0xAA55);
annieluo2	0:d6c9b09b4042	774	ST_DWORD(fs->win + FSI_LeadSig, 0x41615252);
annieluo2	0:d6c9b09b4042	775	ST_DWORD(fs->win + FSI_StrucSig, 0x61417272);
annieluo2	0:d6c9b09b4042	776	ST_DWORD(fs->win + FSI_Free_Count, fs->free_clust);
annieluo2	0:d6c9b09b4042	777	ST_DWORD(fs->win + FSI_Nxt_Free, fs->last_clust);
annieluo2	0:d6c9b09b4042	778	/* Write it into the FSInfo sector */
annieluo2	0:d6c9b09b4042	779	fs->winsect = fs->volbase + 1;
annieluo2	0:d6c9b09b4042	780	disk_write(fs->drv, fs->win, fs->winsect, 1);
annieluo2	0:d6c9b09b4042	781	fs->fsi_flag = 0;
annieluo2	0:d6c9b09b4042	782	}
annieluo2	0:d6c9b09b4042	783	/* Make sure that no pending write process in the physical drive */
annieluo2	0:d6c9b09b4042	784	if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
annieluo2	0:d6c9b09b4042	785	res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	786	}
annieluo2	0:d6c9b09b4042	787
annieluo2	0:d6c9b09b4042	788	return res;
annieluo2	0:d6c9b09b4042	789	}
annieluo2	0:d6c9b09b4042	790	#endif
annieluo2	0:d6c9b09b4042	791
annieluo2	0:d6c9b09b4042	792
annieluo2	0:d6c9b09b4042	793
annieluo2	0:d6c9b09b4042	794
annieluo2	0:d6c9b09b4042	795	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	796	/* Get sector# from cluster# */
annieluo2	0:d6c9b09b4042	797	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	798	/* Hidden API for hacks and disk tools */
annieluo2	0:d6c9b09b4042	799
annieluo2	0:d6c9b09b4042	800	DWORD clust2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */
annieluo2	0:d6c9b09b4042	801	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	802	DWORD clst /* Cluster# to be converted */
annieluo2	0:d6c9b09b4042	803	)
annieluo2	0:d6c9b09b4042	804	{
annieluo2	0:d6c9b09b4042	805	clst -= 2;
annieluo2	0:d6c9b09b4042	806	if (clst >= fs->n_fatent - 2) return 0; /* Invalid cluster# */
annieluo2	0:d6c9b09b4042	807	return clst * fs->csize + fs->database;
annieluo2	0:d6c9b09b4042	808	}
annieluo2	0:d6c9b09b4042	809
annieluo2	0:d6c9b09b4042	810
annieluo2	0:d6c9b09b4042	811
annieluo2	0:d6c9b09b4042	812
annieluo2	0:d6c9b09b4042	813	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	814	/* FAT access - Read value of a FAT entry */
annieluo2	0:d6c9b09b4042	815	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	816	/* Hidden API for hacks and disk tools */
annieluo2	0:d6c9b09b4042	817
annieluo2	0:d6c9b09b4042	818	DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
annieluo2	0:d6c9b09b4042	819	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	820	DWORD clst /* FAT index number (cluster number) to get the value */
annieluo2	0:d6c9b09b4042	821	)
annieluo2	0:d6c9b09b4042	822	{
annieluo2	0:d6c9b09b4042	823	UINT wc, bc;
annieluo2	0:d6c9b09b4042	824	BYTE *p;
annieluo2	0:d6c9b09b4042	825	DWORD val;
annieluo2	0:d6c9b09b4042	826
annieluo2	0:d6c9b09b4042	827
annieluo2	0:d6c9b09b4042	828	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check if in valid range */
annieluo2	0:d6c9b09b4042	829	val = 1; /* Internal error */
annieluo2	0:d6c9b09b4042	830
annieluo2	0:d6c9b09b4042	831	} else {
annieluo2	0:d6c9b09b4042	832	val = 0xFFFFFFFF; /* Default value falls on disk error */
annieluo2	0:d6c9b09b4042	833
annieluo2	0:d6c9b09b4042	834	switch (fs->fs_type) {
annieluo2	0:d6c9b09b4042	835	case FS_FAT12 :
annieluo2	0:d6c9b09b4042	836	bc = (UINT)clst; bc += bc / 2;
annieluo2	0:d6c9b09b4042	837	if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
annieluo2	0:d6c9b09b4042	838	wc = fs->win[bc++ % SS(fs)];
annieluo2	0:d6c9b09b4042	839	if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
annieluo2	0:d6c9b09b4042	840	wc \|= fs->win[bc % SS(fs)] << 8;
annieluo2	0:d6c9b09b4042	841	val = clst & 1 ? wc >> 4 : (wc & 0xFFF);
annieluo2	0:d6c9b09b4042	842	break;
annieluo2	0:d6c9b09b4042	843
annieluo2	0:d6c9b09b4042	844	case FS_FAT16 :
annieluo2	0:d6c9b09b4042	845	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
annieluo2	0:d6c9b09b4042	846	p = &fs->win[clst * 2 % SS(fs)];
annieluo2	0:d6c9b09b4042	847	val = LD_WORD(p);
annieluo2	0:d6c9b09b4042	848	break;
annieluo2	0:d6c9b09b4042	849
annieluo2	0:d6c9b09b4042	850	case FS_FAT32 :
annieluo2	0:d6c9b09b4042	851	if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
annieluo2	0:d6c9b09b4042	852	p = &fs->win[clst * 4 % SS(fs)];
annieluo2	0:d6c9b09b4042	853	val = LD_DWORD(p) & 0x0FFFFFFF;
annieluo2	0:d6c9b09b4042	854	break;
annieluo2	0:d6c9b09b4042	855
annieluo2	0:d6c9b09b4042	856	default:
annieluo2	0:d6c9b09b4042	857	val = 1; /* Internal error */
annieluo2	0:d6c9b09b4042	858	}
annieluo2	0:d6c9b09b4042	859	}
annieluo2	0:d6c9b09b4042	860
annieluo2	0:d6c9b09b4042	861	return val;
annieluo2	0:d6c9b09b4042	862	}
annieluo2	0:d6c9b09b4042	863
annieluo2	0:d6c9b09b4042	864
annieluo2	0:d6c9b09b4042	865
annieluo2	0:d6c9b09b4042	866
annieluo2	0:d6c9b09b4042	867	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	868	/* FAT access - Change value of a FAT entry */
annieluo2	0:d6c9b09b4042	869	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	870	/* Hidden API for hacks and disk tools */
annieluo2	0:d6c9b09b4042	871
annieluo2	0:d6c9b09b4042	872	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	873	FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	874	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	875	DWORD clst, /* FAT index number (cluster number) to be changed */
annieluo2	0:d6c9b09b4042	876	DWORD val /* New value to be set to the entry */
annieluo2	0:d6c9b09b4042	877	)
annieluo2	0:d6c9b09b4042	878	{
annieluo2	0:d6c9b09b4042	879	UINT bc;
annieluo2	0:d6c9b09b4042	880	BYTE *p;
annieluo2	0:d6c9b09b4042	881	FRESULT res;
annieluo2	0:d6c9b09b4042	882
annieluo2	0:d6c9b09b4042	883
annieluo2	0:d6c9b09b4042	884	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check if in valid range */
annieluo2	0:d6c9b09b4042	885	res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	886
annieluo2	0:d6c9b09b4042	887	} else {
annieluo2	0:d6c9b09b4042	888	switch (fs->fs_type) {
annieluo2	0:d6c9b09b4042	889	case FS_FAT12 :
annieluo2	0:d6c9b09b4042	890	bc = (UINT)clst; bc += bc / 2;
annieluo2	0:d6c9b09b4042	891	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
annieluo2	0:d6c9b09b4042	892	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	893	p = &fs->win[bc++ % SS(fs)];
annieluo2	0:d6c9b09b4042	894	p = (clst & 1) ? ((p & 0x0F) \| ((BYTE)val << 4)) : (BYTE)val;
annieluo2	0:d6c9b09b4042	895	fs->wflag = 1;
annieluo2	0:d6c9b09b4042	896	res = move_window(fs, fs->fatbase + (bc / SS(fs)));
annieluo2	0:d6c9b09b4042	897	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	898	p = &fs->win[bc % SS(fs)];
annieluo2	0:d6c9b09b4042	899	p = (clst & 1) ? (BYTE)(val >> 4) : ((p & 0xF0) \| ((BYTE)(val >> 8) & 0x0F));
annieluo2	0:d6c9b09b4042	900	fs->wflag = 1;
annieluo2	0:d6c9b09b4042	901	break;
annieluo2	0:d6c9b09b4042	902
annieluo2	0:d6c9b09b4042	903	case FS_FAT16 :
annieluo2	0:d6c9b09b4042	904	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
annieluo2	0:d6c9b09b4042	905	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	906	p = &fs->win[clst * 2 % SS(fs)];
annieluo2	0:d6c9b09b4042	907	ST_WORD(p, (WORD)val);
annieluo2	0:d6c9b09b4042	908	fs->wflag = 1;
annieluo2	0:d6c9b09b4042	909	break;
annieluo2	0:d6c9b09b4042	910
annieluo2	0:d6c9b09b4042	911	case FS_FAT32 :
annieluo2	0:d6c9b09b4042	912	res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
annieluo2	0:d6c9b09b4042	913	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	914	p = &fs->win[clst * 4 % SS(fs)];
annieluo2	0:d6c9b09b4042	915	val \|= LD_DWORD(p) & 0xF0000000;
annieluo2	0:d6c9b09b4042	916	ST_DWORD(p, val);
annieluo2	0:d6c9b09b4042	917	fs->wflag = 1;
annieluo2	0:d6c9b09b4042	918	break;
annieluo2	0:d6c9b09b4042	919
annieluo2	0:d6c9b09b4042	920	default :
annieluo2	0:d6c9b09b4042	921	res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	922	}
annieluo2	0:d6c9b09b4042	923	}
annieluo2	0:d6c9b09b4042	924
annieluo2	0:d6c9b09b4042	925	return res;
annieluo2	0:d6c9b09b4042	926	}
annieluo2	0:d6c9b09b4042	927	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	928
annieluo2	0:d6c9b09b4042	929
annieluo2	0:d6c9b09b4042	930
annieluo2	0:d6c9b09b4042	931
annieluo2	0:d6c9b09b4042	932	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	933	/* FAT handling - Remove a cluster chain */
annieluo2	0:d6c9b09b4042	934	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	935	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	936	static
annieluo2	0:d6c9b09b4042	937	FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	938	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	939	DWORD clst /* Cluster# to remove a chain from */
annieluo2	0:d6c9b09b4042	940	)
annieluo2	0:d6c9b09b4042	941	{
annieluo2	0:d6c9b09b4042	942	FRESULT res;
annieluo2	0:d6c9b09b4042	943	DWORD nxt;
annieluo2	0:d6c9b09b4042	944	#if _USE_TRIM
annieluo2	0:d6c9b09b4042	945	DWORD scl = clst, ecl = clst, rt[2];
annieluo2	0:d6c9b09b4042	946	#endif
annieluo2	0:d6c9b09b4042	947
annieluo2	0:d6c9b09b4042	948	if (clst < 2 \|\| clst >= fs->n_fatent) { /* Check if in valid range */
annieluo2	0:d6c9b09b4042	949	res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	950
annieluo2	0:d6c9b09b4042	951	} else {
annieluo2	0:d6c9b09b4042	952	res = FR_OK;
annieluo2	0:d6c9b09b4042	953	while (clst < fs->n_fatent) { /* Not a last link? */
annieluo2	0:d6c9b09b4042	954	nxt = get_fat(fs, clst); /* Get cluster status */
annieluo2	0:d6c9b09b4042	955	if (nxt == 0) break; /* Empty cluster? */
annieluo2	0:d6c9b09b4042	956	if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
annieluo2	0:d6c9b09b4042	957	if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
annieluo2	0:d6c9b09b4042	958	res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
annieluo2	0:d6c9b09b4042	959	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	960	if (fs->free_clust != 0xFFFFFFFF) { /* Update FSINFO */
annieluo2	0:d6c9b09b4042	961	fs->free_clust++;
annieluo2	0:d6c9b09b4042	962	fs->fsi_flag \|= 1;
annieluo2	0:d6c9b09b4042	963	}
annieluo2	0:d6c9b09b4042	964	#if _USE_TRIM
annieluo2	0:d6c9b09b4042	965	if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
annieluo2	0:d6c9b09b4042	966	ecl = nxt;
annieluo2	0:d6c9b09b4042	967	} else { /* End of contiguous clusters */
annieluo2	0:d6c9b09b4042	968	rt[0] = clust2sect(fs, scl); /* Start sector */
annieluo2	0:d6c9b09b4042	969	rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
annieluo2	0:d6c9b09b4042	970	disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Erase the block */
annieluo2	0:d6c9b09b4042	971	scl = ecl = nxt;
annieluo2	0:d6c9b09b4042	972	}
annieluo2	0:d6c9b09b4042	973	#endif
annieluo2	0:d6c9b09b4042	974	clst = nxt; /* Next cluster */
annieluo2	0:d6c9b09b4042	975	}
annieluo2	0:d6c9b09b4042	976	}
annieluo2	0:d6c9b09b4042	977
annieluo2	0:d6c9b09b4042	978	return res;
annieluo2	0:d6c9b09b4042	979	}
annieluo2	0:d6c9b09b4042	980	#endif
annieluo2	0:d6c9b09b4042	981
annieluo2	0:d6c9b09b4042	982
annieluo2	0:d6c9b09b4042	983
annieluo2	0:d6c9b09b4042	984
annieluo2	0:d6c9b09b4042	985	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	986	/* FAT handling - Stretch or Create a cluster chain */
annieluo2	0:d6c9b09b4042	987	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	988	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	989	static
annieluo2	0:d6c9b09b4042	990	DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
annieluo2	0:d6c9b09b4042	991	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	992	DWORD clst /* Cluster# to stretch, 0:Create a new chain */
annieluo2	0:d6c9b09b4042	993	)
annieluo2	0:d6c9b09b4042	994	{
annieluo2	0:d6c9b09b4042	995	DWORD cs, ncl, scl;
annieluo2	0:d6c9b09b4042	996	FRESULT res;
annieluo2	0:d6c9b09b4042	997
annieluo2	0:d6c9b09b4042	998
annieluo2	0:d6c9b09b4042	999	if (clst == 0) { /* Create a new chain */
annieluo2	0:d6c9b09b4042	1000	scl = fs->last_clust; /* Get suggested start point */
annieluo2	0:d6c9b09b4042	1001	if (!scl \|\| scl >= fs->n_fatent) scl = 1;
annieluo2	0:d6c9b09b4042	1002	}
annieluo2	0:d6c9b09b4042	1003	else { /* Stretch the current chain */
annieluo2	0:d6c9b09b4042	1004	cs = get_fat(fs, clst); /* Check the cluster status */
annieluo2	0:d6c9b09b4042	1005	if (cs < 2) return 1; /* Invalid value */
annieluo2	0:d6c9b09b4042	1006	if (cs == 0xFFFFFFFF) return cs; /* A disk error occurred */
annieluo2	0:d6c9b09b4042	1007	if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
annieluo2	0:d6c9b09b4042	1008	scl = clst;
annieluo2	0:d6c9b09b4042	1009	}
annieluo2	0:d6c9b09b4042	1010
annieluo2	0:d6c9b09b4042	1011	ncl = scl; /* Start cluster */
annieluo2	0:d6c9b09b4042	1012	for (;;) {
annieluo2	0:d6c9b09b4042	1013	ncl++; /* Next cluster */
annieluo2	0:d6c9b09b4042	1014	if (ncl >= fs->n_fatent) { /* Check wrap around */
annieluo2	0:d6c9b09b4042	1015	ncl = 2;
annieluo2	0:d6c9b09b4042	1016	if (ncl > scl) return 0; /* No free cluster */
annieluo2	0:d6c9b09b4042	1017	}
annieluo2	0:d6c9b09b4042	1018	cs = get_fat(fs, ncl); /* Get the cluster status */
annieluo2	0:d6c9b09b4042	1019	if (cs == 0) break; /* Found a free cluster */
annieluo2	0:d6c9b09b4042	1020	if (cs == 0xFFFFFFFF \|\| cs == 1)/* An error occurred */
annieluo2	0:d6c9b09b4042	1021	return cs;
annieluo2	0:d6c9b09b4042	1022	if (ncl == scl) return 0; /* No free cluster */
annieluo2	0:d6c9b09b4042	1023	}
annieluo2	0:d6c9b09b4042	1024
annieluo2	0:d6c9b09b4042	1025	res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
annieluo2	0:d6c9b09b4042	1026	if (res == FR_OK && clst != 0) {
annieluo2	0:d6c9b09b4042	1027	res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
annieluo2	0:d6c9b09b4042	1028	}
annieluo2	0:d6c9b09b4042	1029	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1030	fs->last_clust = ncl; /* Update FSINFO */
annieluo2	0:d6c9b09b4042	1031	if (fs->free_clust != 0xFFFFFFFF) {
annieluo2	0:d6c9b09b4042	1032	fs->free_clust--;
annieluo2	0:d6c9b09b4042	1033	fs->fsi_flag \|= 1;
annieluo2	0:d6c9b09b4042	1034	}
annieluo2	0:d6c9b09b4042	1035	} else {
annieluo2	0:d6c9b09b4042	1036	ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
annieluo2	0:d6c9b09b4042	1037	}
annieluo2	0:d6c9b09b4042	1038
annieluo2	0:d6c9b09b4042	1039	return ncl; /* Return new cluster number or error code */
annieluo2	0:d6c9b09b4042	1040	}
annieluo2	0:d6c9b09b4042	1041	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	1042
annieluo2	0:d6c9b09b4042	1043
annieluo2	0:d6c9b09b4042	1044
annieluo2	0:d6c9b09b4042	1045
annieluo2	0:d6c9b09b4042	1046	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1047	/* FAT handling - Convert offset into cluster with link map table */
annieluo2	0:d6c9b09b4042	1048	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1049
annieluo2	0:d6c9b09b4042	1050	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	1051	static
annieluo2	0:d6c9b09b4042	1052	DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
annieluo2	0:d6c9b09b4042	1053	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	1054	DWORD ofs /* File offset to be converted to cluster# */
annieluo2	0:d6c9b09b4042	1055	)
annieluo2	0:d6c9b09b4042	1056	{
annieluo2	0:d6c9b09b4042	1057	DWORD cl, ncl, *tbl;
annieluo2	0:d6c9b09b4042	1058
annieluo2	0:d6c9b09b4042	1059
annieluo2	0:d6c9b09b4042	1060	tbl = fp->cltbl + 1; /* Top of CLMT */
annieluo2	0:d6c9b09b4042	1061	cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
annieluo2	0:d6c9b09b4042	1062	for (;;) {
annieluo2	0:d6c9b09b4042	1063	ncl = tbl++; / Number of cluters in the fragment */
annieluo2	0:d6c9b09b4042	1064	if (!ncl) return 0; /* End of table? (error) */
annieluo2	0:d6c9b09b4042	1065	if (cl < ncl) break; /* In this fragment? */
annieluo2	0:d6c9b09b4042	1066	cl -= ncl; tbl++; /* Next fragment */
annieluo2	0:d6c9b09b4042	1067	}
annieluo2	0:d6c9b09b4042	1068	return cl + tbl; / Return the cluster number */
annieluo2	0:d6c9b09b4042	1069	}
annieluo2	0:d6c9b09b4042	1070	#endif /* _USE_FASTSEEK */
annieluo2	0:d6c9b09b4042	1071
annieluo2	0:d6c9b09b4042	1072
annieluo2	0:d6c9b09b4042	1073
annieluo2	0:d6c9b09b4042	1074
annieluo2	0:d6c9b09b4042	1075	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1076	/* Directory handling - Set directory index */
annieluo2	0:d6c9b09b4042	1077	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1078
annieluo2	0:d6c9b09b4042	1079	static
annieluo2	0:d6c9b09b4042	1080	FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	1081	FATFS_DIR* dp, /* Pointer to directory object */
annieluo2	0:d6c9b09b4042	1082	UINT idx /* Index of directory table */
annieluo2	0:d6c9b09b4042	1083	)
annieluo2	0:d6c9b09b4042	1084	{
annieluo2	0:d6c9b09b4042	1085	DWORD clst, sect;
annieluo2	0:d6c9b09b4042	1086	UINT ic;
annieluo2	0:d6c9b09b4042	1087
annieluo2	0:d6c9b09b4042	1088
annieluo2	0:d6c9b09b4042	1089	dp->index = (WORD)idx; /* Current index */
annieluo2	0:d6c9b09b4042	1090	clst = dp->sclust; /* Table start cluster (0:root) */
annieluo2	0:d6c9b09b4042	1091	if (clst == 1 \|\| clst >= dp->fs->n_fatent) /* Check start cluster range */
annieluo2	0:d6c9b09b4042	1092	return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1093	if (!clst && dp->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
annieluo2	0:d6c9b09b4042	1094	clst = dp->fs->dirbase;
annieluo2	0:d6c9b09b4042	1095
annieluo2	0:d6c9b09b4042	1096	if (clst == 0) { /* Static table (root-directory in FAT12/16) */
annieluo2	0:d6c9b09b4042	1097	if (idx >= dp->fs->n_rootdir) /* Is index out of range? */
annieluo2	0:d6c9b09b4042	1098	return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1099	sect = dp->fs->dirbase;
annieluo2	0:d6c9b09b4042	1100	}
annieluo2	0:d6c9b09b4042	1101	else { /* Dynamic table (root-directory in FAT32 or sub-directory) */
annieluo2	0:d6c9b09b4042	1102	ic = SS(dp->fs) / SZ_DIRE * dp->fs->csize; /* Entries per cluster */
annieluo2	0:d6c9b09b4042	1103	while (idx >= ic) { /* Follow cluster chain */
annieluo2	0:d6c9b09b4042	1104	clst = get_fat(dp->fs, clst); /* Get next cluster */
annieluo2	0:d6c9b09b4042	1105	if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
annieluo2	0:d6c9b09b4042	1106	if (clst < 2 \|\| clst >= dp->fs->n_fatent) /* Reached to end of table or internal error */
annieluo2	0:d6c9b09b4042	1107	return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1108	idx -= ic;
annieluo2	0:d6c9b09b4042	1109	}
annieluo2	0:d6c9b09b4042	1110	sect = clust2sect(dp->fs, clst);
annieluo2	0:d6c9b09b4042	1111	}
annieluo2	0:d6c9b09b4042	1112	dp->clust = clst; /* Current cluster# */
annieluo2	0:d6c9b09b4042	1113	if (!sect) return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1114	dp->sect = sect + idx / (SS(dp->fs) / SZ_DIRE); /* Sector# of the directory entry */
annieluo2	0:d6c9b09b4042	1115	dp->dir = dp->fs->win + (idx % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Ptr to the entry in the sector */
annieluo2	0:d6c9b09b4042	1116
annieluo2	0:d6c9b09b4042	1117	return FR_OK;
annieluo2	0:d6c9b09b4042	1118	}
annieluo2	0:d6c9b09b4042	1119
annieluo2	0:d6c9b09b4042	1120
annieluo2	0:d6c9b09b4042	1121
annieluo2	0:d6c9b09b4042	1122
annieluo2	0:d6c9b09b4042	1123	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1124	/* Directory handling - Move directory table index next */
annieluo2	0:d6c9b09b4042	1125	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1126
annieluo2	0:d6c9b09b4042	1127	static
annieluo2	0:d6c9b09b4042	1128	FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
annieluo2	0:d6c9b09b4042	1129	FATFS_DIR* dp, /* Pointer to the directory object */
annieluo2	0:d6c9b09b4042	1130	int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
annieluo2	0:d6c9b09b4042	1131	)
annieluo2	0:d6c9b09b4042	1132	{
annieluo2	0:d6c9b09b4042	1133	DWORD clst;
annieluo2	0:d6c9b09b4042	1134	UINT i;
annieluo2	0:d6c9b09b4042	1135	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1136	UINT c;
annieluo2	0:d6c9b09b4042	1137	#endif
annieluo2	0:d6c9b09b4042	1138
annieluo2	0:d6c9b09b4042	1139
annieluo2	0:d6c9b09b4042	1140	i = dp->index + 1;
annieluo2	0:d6c9b09b4042	1141	if (!(i & 0xFFFF) \|\| !dp->sect) /* Report EOT when index has reached 65535 */
annieluo2	0:d6c9b09b4042	1142	return FR_NO_FILE;
annieluo2	0:d6c9b09b4042	1143
annieluo2	0:d6c9b09b4042	1144	if (!(i % (SS(dp->fs) / SZ_DIRE))) { /* Sector changed? */
annieluo2	0:d6c9b09b4042	1145	dp->sect++; /* Next sector */
annieluo2	0:d6c9b09b4042	1146
annieluo2	0:d6c9b09b4042	1147	if (!dp->clust) { /* Static table */
annieluo2	0:d6c9b09b4042	1148	if (i >= dp->fs->n_rootdir) /* Report EOT if it reached end of static table */
annieluo2	0:d6c9b09b4042	1149	return FR_NO_FILE;
annieluo2	0:d6c9b09b4042	1150	}
annieluo2	0:d6c9b09b4042	1151	else { /* Dynamic table */
annieluo2	0:d6c9b09b4042	1152	if (((i / (SS(dp->fs) / SZ_DIRE)) & (dp->fs->csize - 1)) == 0) { /* Cluster changed? */
annieluo2	0:d6c9b09b4042	1153	clst = get_fat(dp->fs, dp->clust); /* Get next cluster */
annieluo2	0:d6c9b09b4042	1154	if (clst <= 1) return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1155	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	1156	if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */
annieluo2	0:d6c9b09b4042	1157	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1158	if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT */
annieluo2	0:d6c9b09b4042	1159	clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */
annieluo2	0:d6c9b09b4042	1160	if (clst == 0) return FR_DENIED; /* No free cluster */
annieluo2	0:d6c9b09b4042	1161	if (clst == 1) return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1162	if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	1163	/* Clean-up stretched table */
annieluo2	0:d6c9b09b4042	1164	if (sync_window(dp->fs)) return FR_DISK_ERR;/* Flush disk access window */
annieluo2	0:d6c9b09b4042	1165	mem_set(dp->fs->win, 0, SS(dp->fs)); /* Clear window buffer */
annieluo2	0:d6c9b09b4042	1166	dp->fs->winsect = clust2sect(dp->fs, clst); /* Cluster start sector */
annieluo2	0:d6c9b09b4042	1167	for (c = 0; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */
annieluo2	0:d6c9b09b4042	1168	dp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	1169	if (sync_window(dp->fs)) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	1170	dp->fs->winsect++;
annieluo2	0:d6c9b09b4042	1171	}
annieluo2	0:d6c9b09b4042	1172	dp->fs->winsect -= c; /* Rewind window offset */
annieluo2	0:d6c9b09b4042	1173	#else
annieluo2	0:d6c9b09b4042	1174	if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT (this is to suppress warning) */
annieluo2	0:d6c9b09b4042	1175	return FR_NO_FILE; /* Report EOT */
annieluo2	0:d6c9b09b4042	1176	#endif
annieluo2	0:d6c9b09b4042	1177	}
annieluo2	0:d6c9b09b4042	1178	dp->clust = clst; /* Initialize data for new cluster */
annieluo2	0:d6c9b09b4042	1179	dp->sect = clust2sect(dp->fs, clst);
annieluo2	0:d6c9b09b4042	1180	}
annieluo2	0:d6c9b09b4042	1181	}
annieluo2	0:d6c9b09b4042	1182	}
annieluo2	0:d6c9b09b4042	1183
annieluo2	0:d6c9b09b4042	1184	dp->index = (WORD)i; /* Current index */
annieluo2	0:d6c9b09b4042	1185	dp->dir = dp->fs->win + (i % (SS(dp->fs) / SZ_DIRE)) * SZ_DIRE; /* Current entry in the window */
annieluo2	0:d6c9b09b4042	1186
annieluo2	0:d6c9b09b4042	1187	return FR_OK;
annieluo2	0:d6c9b09b4042	1188	}
annieluo2	0:d6c9b09b4042	1189
annieluo2	0:d6c9b09b4042	1190
annieluo2	0:d6c9b09b4042	1191
annieluo2	0:d6c9b09b4042	1192
annieluo2	0:d6c9b09b4042	1193	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1194	/* Directory handling - Reserve directory entry */
annieluo2	0:d6c9b09b4042	1195	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1196
annieluo2	0:d6c9b09b4042	1197	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1198	static
annieluo2	0:d6c9b09b4042	1199	FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	1200	FATFS_DIR* dp, /* Pointer to the directory object */
annieluo2	0:d6c9b09b4042	1201	UINT nent /* Number of contiguous entries to allocate (1-21) */
annieluo2	0:d6c9b09b4042	1202	)
annieluo2	0:d6c9b09b4042	1203	{
annieluo2	0:d6c9b09b4042	1204	FRESULT res;
annieluo2	0:d6c9b09b4042	1205	UINT n;
annieluo2	0:d6c9b09b4042	1206
annieluo2	0:d6c9b09b4042	1207
annieluo2	0:d6c9b09b4042	1208	res = dir_sdi(dp, 0);
annieluo2	0:d6c9b09b4042	1209	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1210	n = 0;
annieluo2	0:d6c9b09b4042	1211	do {
annieluo2	0:d6c9b09b4042	1212	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1213	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1214	if (dp->dir[0] == DDEM \|\| dp->dir[0] == 0) { /* Is it a free entry? */
annieluo2	0:d6c9b09b4042	1215	if (++n == nent) break; /* A block of contiguous free entries is found */
annieluo2	0:d6c9b09b4042	1216	} else {
annieluo2	0:d6c9b09b4042	1217	n = 0; /* Not a blank entry. Restart to search */
annieluo2	0:d6c9b09b4042	1218	}
annieluo2	0:d6c9b09b4042	1219	res = dir_next(dp, 1); /* Next entry with table stretch enabled */
annieluo2	0:d6c9b09b4042	1220	} while (res == FR_OK);
annieluo2	0:d6c9b09b4042	1221	}
annieluo2	0:d6c9b09b4042	1222	if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
annieluo2	0:d6c9b09b4042	1223	return res;
annieluo2	0:d6c9b09b4042	1224	}
annieluo2	0:d6c9b09b4042	1225	#endif
annieluo2	0:d6c9b09b4042	1226
annieluo2	0:d6c9b09b4042	1227
annieluo2	0:d6c9b09b4042	1228
annieluo2	0:d6c9b09b4042	1229
annieluo2	0:d6c9b09b4042	1230	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1231	/* Directory handling - Load/Store start cluster number */
annieluo2	0:d6c9b09b4042	1232	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1233
annieluo2	0:d6c9b09b4042	1234	static
annieluo2	0:d6c9b09b4042	1235	DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
annieluo2	0:d6c9b09b4042	1236	FATFS* fs, /* Pointer to the fs object */
annieluo2	0:d6c9b09b4042	1237	const BYTE* dir /* Pointer to the SFN entry */
annieluo2	0:d6c9b09b4042	1238	)
annieluo2	0:d6c9b09b4042	1239	{
annieluo2	0:d6c9b09b4042	1240	DWORD cl;
annieluo2	0:d6c9b09b4042	1241
annieluo2	0:d6c9b09b4042	1242	cl = LD_WORD(dir + DIR_FstClusLO);
annieluo2	0:d6c9b09b4042	1243	if (fs->fs_type == FS_FAT32)
annieluo2	0:d6c9b09b4042	1244	cl \|= (DWORD)LD_WORD(dir + DIR_FstClusHI) << 16;
annieluo2	0:d6c9b09b4042	1245
annieluo2	0:d6c9b09b4042	1246	return cl;
annieluo2	0:d6c9b09b4042	1247	}
annieluo2	0:d6c9b09b4042	1248
annieluo2	0:d6c9b09b4042	1249
annieluo2	0:d6c9b09b4042	1250	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1251	static
annieluo2	0:d6c9b09b4042	1252	void st_clust (
annieluo2	0:d6c9b09b4042	1253	BYTE* dir, /* Pointer to the SFN entry */
annieluo2	0:d6c9b09b4042	1254	DWORD cl /* Value to be set */
annieluo2	0:d6c9b09b4042	1255	)
annieluo2	0:d6c9b09b4042	1256	{
annieluo2	0:d6c9b09b4042	1257	ST_WORD(dir + DIR_FstClusLO, cl);
annieluo2	0:d6c9b09b4042	1258	ST_WORD(dir + DIR_FstClusHI, cl >> 16);
annieluo2	0:d6c9b09b4042	1259	}
annieluo2	0:d6c9b09b4042	1260	#endif
annieluo2	0:d6c9b09b4042	1261
annieluo2	0:d6c9b09b4042	1262
annieluo2	0:d6c9b09b4042	1263
annieluo2	0:d6c9b09b4042	1264
annieluo2	0:d6c9b09b4042	1265	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1266	/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
annieluo2	0:d6c9b09b4042	1267	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1268	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1269	static
annieluo2	0:d6c9b09b4042	1270	const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */
annieluo2	0:d6c9b09b4042	1271
annieluo2	0:d6c9b09b4042	1272
annieluo2	0:d6c9b09b4042	1273	static
annieluo2	0:d6c9b09b4042	1274	int cmp_lfn ( /* 1:matched, 0:not matched */
annieluo2	0:d6c9b09b4042	1275	WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
annieluo2	0:d6c9b09b4042	1276	BYTE* dir /* Pointer to the directory entry containing the part of LFN */
annieluo2	0:d6c9b09b4042	1277	)
annieluo2	0:d6c9b09b4042	1278	{
annieluo2	0:d6c9b09b4042	1279	UINT i, s;
annieluo2	0:d6c9b09b4042	1280	WCHAR wc, uc;
annieluo2	0:d6c9b09b4042	1281
annieluo2	0:d6c9b09b4042	1282
annieluo2	0:d6c9b09b4042	1283	if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
annieluo2	0:d6c9b09b4042	1284
annieluo2	0:d6c9b09b4042	1285	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
annieluo2	0:d6c9b09b4042	1286
annieluo2	0:d6c9b09b4042	1287	for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
annieluo2	0:d6c9b09b4042	1288	uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
annieluo2	0:d6c9b09b4042	1289	if (wc) {
annieluo2	0:d6c9b09b4042	1290	if (i >= _MAX_LFN \|\| ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) /* Compare it */
annieluo2	0:d6c9b09b4042	1291	return 0; /* Not matched */
annieluo2	0:d6c9b09b4042	1292	wc = uc;
annieluo2	0:d6c9b09b4042	1293	} else {
annieluo2	0:d6c9b09b4042	1294	if (uc != 0xFFFF) return 0; /* Check filler */
annieluo2	0:d6c9b09b4042	1295	}
annieluo2	0:d6c9b09b4042	1296	}
annieluo2	0:d6c9b09b4042	1297
annieluo2	0:d6c9b09b4042	1298	if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) /* Last segment matched but different length */
annieluo2	0:d6c9b09b4042	1299	return 0;
annieluo2	0:d6c9b09b4042	1300
annieluo2	0:d6c9b09b4042	1301	return 1; /* The part of LFN matched */
annieluo2	0:d6c9b09b4042	1302	}
annieluo2	0:d6c9b09b4042	1303
annieluo2	0:d6c9b09b4042	1304
annieluo2	0:d6c9b09b4042	1305
annieluo2	0:d6c9b09b4042	1306	static
annieluo2	0:d6c9b09b4042	1307	int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
annieluo2	0:d6c9b09b4042	1308	WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
annieluo2	0:d6c9b09b4042	1309	BYTE* dir /* Pointer to the LFN entry */
annieluo2	0:d6c9b09b4042	1310	)
annieluo2	0:d6c9b09b4042	1311	{
annieluo2	0:d6c9b09b4042	1312	UINT i, s;
annieluo2	0:d6c9b09b4042	1313	WCHAR wc, uc;
annieluo2	0:d6c9b09b4042	1314
annieluo2	0:d6c9b09b4042	1315
annieluo2	0:d6c9b09b4042	1316	if (LD_WORD(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
annieluo2	0:d6c9b09b4042	1317
annieluo2	0:d6c9b09b4042	1318	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
annieluo2	0:d6c9b09b4042	1319
annieluo2	0:d6c9b09b4042	1320	for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
annieluo2	0:d6c9b09b4042	1321	uc = LD_WORD(dir + LfnOfs[s]); /* Pick an LFN character */
annieluo2	0:d6c9b09b4042	1322	if (wc) {
annieluo2	0:d6c9b09b4042	1323	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
annieluo2	0:d6c9b09b4042	1324	lfnbuf[i++] = wc = uc; /* Store it */
annieluo2	0:d6c9b09b4042	1325	} else {
annieluo2	0:d6c9b09b4042	1326	if (uc != 0xFFFF) return 0; /* Check filler */
annieluo2	0:d6c9b09b4042	1327	}
annieluo2	0:d6c9b09b4042	1328	}
annieluo2	0:d6c9b09b4042	1329
annieluo2	0:d6c9b09b4042	1330	if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */
annieluo2	0:d6c9b09b4042	1331	if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
annieluo2	0:d6c9b09b4042	1332	lfnbuf[i] = 0;
annieluo2	0:d6c9b09b4042	1333	}
annieluo2	0:d6c9b09b4042	1334
annieluo2	0:d6c9b09b4042	1335	return 1; /* The part of LFN is valid */
annieluo2	0:d6c9b09b4042	1336	}
annieluo2	0:d6c9b09b4042	1337
annieluo2	0:d6c9b09b4042	1338
annieluo2	0:d6c9b09b4042	1339	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1340	static
annieluo2	0:d6c9b09b4042	1341	void fit_lfn (
annieluo2	0:d6c9b09b4042	1342	const WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
annieluo2	0:d6c9b09b4042	1343	BYTE* dir, /* Pointer to the LFN entry to be processed */
annieluo2	0:d6c9b09b4042	1344	BYTE ord, /* LFN order (1-20) */
annieluo2	0:d6c9b09b4042	1345	BYTE sum /* Checksum of the corresponding SFN */
annieluo2	0:d6c9b09b4042	1346	)
annieluo2	0:d6c9b09b4042	1347	{
annieluo2	0:d6c9b09b4042	1348	UINT i, s;
annieluo2	0:d6c9b09b4042	1349	WCHAR wc;
annieluo2	0:d6c9b09b4042	1350
annieluo2	0:d6c9b09b4042	1351
annieluo2	0:d6c9b09b4042	1352	dir[LDIR_Chksum] = sum; /* Set checksum */
annieluo2	0:d6c9b09b4042	1353	dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
annieluo2	0:d6c9b09b4042	1354	dir[LDIR_Type] = 0;
annieluo2	0:d6c9b09b4042	1355	ST_WORD(dir + LDIR_FstClusLO, 0);
annieluo2	0:d6c9b09b4042	1356
annieluo2	0:d6c9b09b4042	1357	i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
annieluo2	0:d6c9b09b4042	1358	s = wc = 0;
annieluo2	0:d6c9b09b4042	1359	do {
annieluo2	0:d6c9b09b4042	1360	if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective character */
annieluo2	0:d6c9b09b4042	1361	ST_WORD(dir+LfnOfs[s], wc); /* Put it */
annieluo2	0:d6c9b09b4042	1362	if (!wc) wc = 0xFFFF; /* Padding characters following last character */
annieluo2	0:d6c9b09b4042	1363	} while (++s < 13);
annieluo2	0:d6c9b09b4042	1364	if (wc == 0xFFFF \|\| !lfnbuf[i]) ord \|= LLEF; /* Bottom LFN part is the start of LFN sequence */
annieluo2	0:d6c9b09b4042	1365	dir[LDIR_Ord] = ord; /* Set the LFN order */
annieluo2	0:d6c9b09b4042	1366	}
annieluo2	0:d6c9b09b4042	1367
annieluo2	0:d6c9b09b4042	1368	#endif
annieluo2	0:d6c9b09b4042	1369	#endif
annieluo2	0:d6c9b09b4042	1370
annieluo2	0:d6c9b09b4042	1371
annieluo2	0:d6c9b09b4042	1372
annieluo2	0:d6c9b09b4042	1373
annieluo2	0:d6c9b09b4042	1374	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1375	/* Create numbered name */
annieluo2	0:d6c9b09b4042	1376	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1377	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1378	static
annieluo2	0:d6c9b09b4042	1379	void gen_numname (
annieluo2	0:d6c9b09b4042	1380	BYTE* dst, /* Pointer to the buffer to store numbered SFN */
annieluo2	0:d6c9b09b4042	1381	const BYTE* src, /* Pointer to SFN */
annieluo2	0:d6c9b09b4042	1382	const WCHAR* lfn, /* Pointer to LFN */
annieluo2	0:d6c9b09b4042	1383	UINT seq /* Sequence number */
annieluo2	0:d6c9b09b4042	1384	)
annieluo2	0:d6c9b09b4042	1385	{
annieluo2	0:d6c9b09b4042	1386	BYTE ns[8], c;
annieluo2	0:d6c9b09b4042	1387	UINT i, j;
annieluo2	0:d6c9b09b4042	1388	WCHAR wc;
annieluo2	0:d6c9b09b4042	1389	DWORD sr;
annieluo2	0:d6c9b09b4042	1390
annieluo2	0:d6c9b09b4042	1391
annieluo2	0:d6c9b09b4042	1392	mem_cpy(dst, src, 11);
annieluo2	0:d6c9b09b4042	1393
annieluo2	0:d6c9b09b4042	1394	if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
annieluo2	0:d6c9b09b4042	1395	sr = seq;
annieluo2	0:d6c9b09b4042	1396	while (lfn) { / Create a CRC */
annieluo2	0:d6c9b09b4042	1397	wc = *lfn++;
annieluo2	0:d6c9b09b4042	1398	for (i = 0; i < 16; i++) {
annieluo2	0:d6c9b09b4042	1399	sr = (sr << 1) + (wc & 1);
annieluo2	0:d6c9b09b4042	1400	wc >>= 1;
annieluo2	0:d6c9b09b4042	1401	if (sr & 0x10000) sr ^= 0x11021;
annieluo2	0:d6c9b09b4042	1402	}
annieluo2	0:d6c9b09b4042	1403	}
annieluo2	0:d6c9b09b4042	1404	seq = (UINT)sr;
annieluo2	0:d6c9b09b4042	1405	}
annieluo2	0:d6c9b09b4042	1406
annieluo2	0:d6c9b09b4042	1407	/* itoa (hexdecimal) */
annieluo2	0:d6c9b09b4042	1408	i = 7;
annieluo2	0:d6c9b09b4042	1409	do {
annieluo2	0:d6c9b09b4042	1410	c = (seq % 16) + '0';
annieluo2	0:d6c9b09b4042	1411	if (c > '9') c += 7;
annieluo2	0:d6c9b09b4042	1412	ns[i--] = c;
annieluo2	0:d6c9b09b4042	1413	seq /= 16;
annieluo2	0:d6c9b09b4042	1414	} while (seq);
annieluo2	0:d6c9b09b4042	1415	ns[i] = '~';
annieluo2	0:d6c9b09b4042	1416
annieluo2	0:d6c9b09b4042	1417	/* Append the number */
annieluo2	0:d6c9b09b4042	1418	for (j = 0; j < i && dst[j] != ' '; j++) {
annieluo2	0:d6c9b09b4042	1419	if (IsDBCS1(dst[j])) {
annieluo2	0:d6c9b09b4042	1420	if (j == i - 1) break;
annieluo2	0:d6c9b09b4042	1421	j++;
annieluo2	0:d6c9b09b4042	1422	}
annieluo2	0:d6c9b09b4042	1423	}
annieluo2	0:d6c9b09b4042	1424	do {
annieluo2	0:d6c9b09b4042	1425	dst[j++] = (i < 8) ? ns[i++] : ' ';
annieluo2	0:d6c9b09b4042	1426	} while (j < 8);
annieluo2	0:d6c9b09b4042	1427	}
annieluo2	0:d6c9b09b4042	1428	#endif
annieluo2	0:d6c9b09b4042	1429
annieluo2	0:d6c9b09b4042	1430
annieluo2	0:d6c9b09b4042	1431
annieluo2	0:d6c9b09b4042	1432
annieluo2	0:d6c9b09b4042	1433	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1434	/* Calculate checksum of an SFN entry */
annieluo2	0:d6c9b09b4042	1435	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1436	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1437	static
annieluo2	0:d6c9b09b4042	1438	BYTE sum_sfn (
annieluo2	0:d6c9b09b4042	1439	const BYTE* dir /* Pointer to the SFN entry */
annieluo2	0:d6c9b09b4042	1440	)
annieluo2	0:d6c9b09b4042	1441	{
annieluo2	0:d6c9b09b4042	1442	BYTE sum = 0;
annieluo2	0:d6c9b09b4042	1443	UINT n = 11;
annieluo2	0:d6c9b09b4042	1444
annieluo2	0:d6c9b09b4042	1445	do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
annieluo2	0:d6c9b09b4042	1446	return sum;
annieluo2	0:d6c9b09b4042	1447	}
annieluo2	0:d6c9b09b4042	1448	#endif
annieluo2	0:d6c9b09b4042	1449
annieluo2	0:d6c9b09b4042	1450
annieluo2	0:d6c9b09b4042	1451
annieluo2	0:d6c9b09b4042	1452
annieluo2	0:d6c9b09b4042	1453	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1454	/* Directory handling - Find an object in the directory */
annieluo2	0:d6c9b09b4042	1455	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1456
annieluo2	0:d6c9b09b4042	1457	static
annieluo2	0:d6c9b09b4042	1458	FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
annieluo2	0:d6c9b09b4042	1459	FATFS_DIR* dp /* Pointer to the directory object linked to the file name */
annieluo2	0:d6c9b09b4042	1460	)
annieluo2	0:d6c9b09b4042	1461	{
annieluo2	0:d6c9b09b4042	1462	FRESULT res;
annieluo2	0:d6c9b09b4042	1463	BYTE c, *dir;
annieluo2	0:d6c9b09b4042	1464	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1465	BYTE a, ord, sum;
annieluo2	0:d6c9b09b4042	1466	#endif
annieluo2	0:d6c9b09b4042	1467
annieluo2	0:d6c9b09b4042	1468	res = dir_sdi(dp, 0); /* Rewind directory object */
annieluo2	0:d6c9b09b4042	1469	if (res != FR_OK) return res;
annieluo2	0:d6c9b09b4042	1470
annieluo2	0:d6c9b09b4042	1471	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1472	ord = sum = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
annieluo2	0:d6c9b09b4042	1473	#endif
annieluo2	0:d6c9b09b4042	1474	do {
annieluo2	0:d6c9b09b4042	1475	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1476	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1477	dir = dp->dir; /* Ptr to the directory entry of current index */
annieluo2	0:d6c9b09b4042	1478	c = dir[DIR_Name];
annieluo2	0:d6c9b09b4042	1479	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
annieluo2	0:d6c9b09b4042	1480	#if _USE_LFN /* LFN configuration */
annieluo2	0:d6c9b09b4042	1481	a = dir[DIR_Attr] & AM_MASK;
annieluo2	0:d6c9b09b4042	1482	if (c == DDEM \|\| ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
annieluo2	0:d6c9b09b4042	1483	ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
annieluo2	0:d6c9b09b4042	1484	} else {
annieluo2	0:d6c9b09b4042	1485	if (a == AM_LFN) { /* An LFN entry is found */
annieluo2	0:d6c9b09b4042	1486	if (dp->lfn) {
annieluo2	0:d6c9b09b4042	1487	if (c & LLEF) { /* Is it start of LFN sequence? */
annieluo2	0:d6c9b09b4042	1488	sum = dir[LDIR_Chksum];
annieluo2	0:d6c9b09b4042	1489	c &= ~LLEF; ord = c; /* LFN start order */
annieluo2	0:d6c9b09b4042	1490	dp->lfn_idx = dp->index; /* Start index of LFN */
annieluo2	0:d6c9b09b4042	1491	}
annieluo2	0:d6c9b09b4042	1492	/* Check validity of the LFN entry and compare it with given name */
annieluo2	0:d6c9b09b4042	1493	ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
annieluo2	0:d6c9b09b4042	1494	}
annieluo2	0:d6c9b09b4042	1495	} else { /* An SFN entry is found */
annieluo2	0:d6c9b09b4042	1496	if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
annieluo2	0:d6c9b09b4042	1497	if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) break; /* SFN matched? */
annieluo2	0:d6c9b09b4042	1498	ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */
annieluo2	0:d6c9b09b4042	1499	}
annieluo2	0:d6c9b09b4042	1500	}
annieluo2	0:d6c9b09b4042	1501	#else /* Non LFN configuration */
annieluo2	0:d6c9b09b4042	1502	if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* Is it a valid entry? */
annieluo2	0:d6c9b09b4042	1503	break;
annieluo2	0:d6c9b09b4042	1504	#endif
annieluo2	0:d6c9b09b4042	1505	res = dir_next(dp, 0); /* Next entry */
annieluo2	0:d6c9b09b4042	1506	} while (res == FR_OK);
annieluo2	0:d6c9b09b4042	1507
annieluo2	0:d6c9b09b4042	1508	return res;
annieluo2	0:d6c9b09b4042	1509	}
annieluo2	0:d6c9b09b4042	1510
annieluo2	0:d6c9b09b4042	1511
annieluo2	0:d6c9b09b4042	1512
annieluo2	0:d6c9b09b4042	1513
annieluo2	0:d6c9b09b4042	1514	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1515	/* Read an object from the directory */
annieluo2	0:d6c9b09b4042	1516	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1517	#if _FS_MINIMIZE <= 1 \|\| _USE_LABEL \|\| _FS_RPATH >= 2
annieluo2	0:d6c9b09b4042	1518	static
annieluo2	0:d6c9b09b4042	1519	FRESULT dir_read (
annieluo2	0:d6c9b09b4042	1520	FATFS_DIR* dp, /* Pointer to the directory object */
annieluo2	0:d6c9b09b4042	1521	int vol /* Filtered by 0:file/directory or 1:volume label */
annieluo2	0:d6c9b09b4042	1522	)
annieluo2	0:d6c9b09b4042	1523	{
annieluo2	0:d6c9b09b4042	1524	FRESULT res;
annieluo2	0:d6c9b09b4042	1525	BYTE a, c, *dir;
annieluo2	0:d6c9b09b4042	1526	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1527	BYTE ord = 0xFF, sum = 0xFF;
annieluo2	0:d6c9b09b4042	1528	#endif
annieluo2	0:d6c9b09b4042	1529
annieluo2	0:d6c9b09b4042	1530	res = FR_NO_FILE;
annieluo2	0:d6c9b09b4042	1531	while (dp->sect) {
annieluo2	0:d6c9b09b4042	1532	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1533	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1534	dir = dp->dir; /* Ptr to the directory entry of current index */
annieluo2	0:d6c9b09b4042	1535	c = dir[DIR_Name];
annieluo2	0:d6c9b09b4042	1536	if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
annieluo2	0:d6c9b09b4042	1537	a = dir[DIR_Attr] & AM_MASK;
annieluo2	0:d6c9b09b4042	1538	#if _USE_LFN /* LFN configuration */
annieluo2	0:d6c9b09b4042	1539	if (c == DDEM \|\| (!_FS_RPATH && c == '.') \|\| (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
annieluo2	0:d6c9b09b4042	1540	ord = 0xFF;
annieluo2	0:d6c9b09b4042	1541	} else {
annieluo2	0:d6c9b09b4042	1542	if (a == AM_LFN) { /* An LFN entry is found */
annieluo2	0:d6c9b09b4042	1543	if (c & LLEF) { /* Is it start of LFN sequence? */
annieluo2	0:d6c9b09b4042	1544	sum = dir[LDIR_Chksum];
annieluo2	0:d6c9b09b4042	1545	c &= ~LLEF; ord = c;
annieluo2	0:d6c9b09b4042	1546	dp->lfn_idx = dp->index;
annieluo2	0:d6c9b09b4042	1547	}
annieluo2	0:d6c9b09b4042	1548	/* Check LFN validity and capture it */
annieluo2	0:d6c9b09b4042	1549	ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF;
annieluo2	0:d6c9b09b4042	1550	} else { /* An SFN entry is found */
annieluo2	0:d6c9b09b4042	1551	if (ord \|\| sum != sum_sfn(dir)) /* Is there a valid LFN? */
annieluo2	0:d6c9b09b4042	1552	dp->lfn_idx = 0xFFFF; /* It has no LFN. */
annieluo2	0:d6c9b09b4042	1553	break;
annieluo2	0:d6c9b09b4042	1554	}
annieluo2	0:d6c9b09b4042	1555	}
annieluo2	0:d6c9b09b4042	1556	#else /* Non LFN configuration */
annieluo2	0:d6c9b09b4042	1557	if (c != DDEM && (_FS_RPATH \|\| c != '.') && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) /* Is it a valid entry? */
annieluo2	0:d6c9b09b4042	1558	break;
annieluo2	0:d6c9b09b4042	1559	#endif
annieluo2	0:d6c9b09b4042	1560	res = dir_next(dp, 0); /* Next entry */
annieluo2	0:d6c9b09b4042	1561	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1562	}
annieluo2	0:d6c9b09b4042	1563
annieluo2	0:d6c9b09b4042	1564	if (res != FR_OK) dp->sect = 0;
annieluo2	0:d6c9b09b4042	1565
annieluo2	0:d6c9b09b4042	1566	return res;
annieluo2	0:d6c9b09b4042	1567	}
annieluo2	0:d6c9b09b4042	1568	#endif /* _FS_MINIMIZE <= 1 \|\| _USE_LABEL \|\| _FS_RPATH >= 2 */
annieluo2	0:d6c9b09b4042	1569
annieluo2	0:d6c9b09b4042	1570
annieluo2	0:d6c9b09b4042	1571
annieluo2	0:d6c9b09b4042	1572
annieluo2	0:d6c9b09b4042	1573	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1574	/* Register an object to the directory */
annieluo2	0:d6c9b09b4042	1575	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1576	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	1577	static
annieluo2	0:d6c9b09b4042	1578	FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
annieluo2	0:d6c9b09b4042	1579	FATFS_DIR* dp /* Target directory with object name to be created */
annieluo2	0:d6c9b09b4042	1580	)
annieluo2	0:d6c9b09b4042	1581	{
annieluo2	0:d6c9b09b4042	1582	FRESULT res;
annieluo2	0:d6c9b09b4042	1583	#if _USE_LFN /* LFN configuration */
annieluo2	0:d6c9b09b4042	1584	UINT n, nent;
annieluo2	0:d6c9b09b4042	1585	BYTE sn[12], *fn, sum;
annieluo2	0:d6c9b09b4042	1586	WCHAR *lfn;
annieluo2	0:d6c9b09b4042	1587
annieluo2	0:d6c9b09b4042	1588
annieluo2	0:d6c9b09b4042	1589	fn = dp->fn; lfn = dp->lfn;
annieluo2	0:d6c9b09b4042	1590	mem_cpy(sn, fn, 12);
annieluo2	0:d6c9b09b4042	1591
annieluo2	0:d6c9b09b4042	1592	if (_FS_RPATH && (sn[NSFLAG] & NS_DOT)) /* Cannot create dot entry */
annieluo2	0:d6c9b09b4042	1593	return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	1594
annieluo2	0:d6c9b09b4042	1595	if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
annieluo2	0:d6c9b09b4042	1596	fn[NSFLAG] = 0; dp->lfn = 0; /* Find only SFN */
annieluo2	0:d6c9b09b4042	1597	for (n = 1; n < 100; n++) {
annieluo2	0:d6c9b09b4042	1598	gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
annieluo2	0:d6c9b09b4042	1599	res = dir_find(dp); /* Check if the name collides with existing SFN */
annieluo2	0:d6c9b09b4042	1600	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1601	}
annieluo2	0:d6c9b09b4042	1602	if (n == 100) return FR_DENIED; /* Abort if too many collisions */
annieluo2	0:d6c9b09b4042	1603	if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
annieluo2	0:d6c9b09b4042	1604	fn[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;
annieluo2	0:d6c9b09b4042	1605	}
annieluo2	0:d6c9b09b4042	1606
annieluo2	0:d6c9b09b4042	1607	if (sn[NSFLAG] & NS_LFN) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */
annieluo2	0:d6c9b09b4042	1608	for (n = 0; lfn[n]; n++) ;
annieluo2	0:d6c9b09b4042	1609	nent = (n + 25) / 13;
annieluo2	0:d6c9b09b4042	1610	} else { /* Otherwise allocate an entry for an SFN */
annieluo2	0:d6c9b09b4042	1611	nent = 1;
annieluo2	0:d6c9b09b4042	1612	}
annieluo2	0:d6c9b09b4042	1613	res = dir_alloc(dp, nent); /* Allocate entries */
annieluo2	0:d6c9b09b4042	1614
annieluo2	0:d6c9b09b4042	1615	if (res == FR_OK && --nent) { /* Set LFN entry if needed */
annieluo2	0:d6c9b09b4042	1616	res = dir_sdi(dp, dp->index - nent);
annieluo2	0:d6c9b09b4042	1617	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1618	sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */
annieluo2	0:d6c9b09b4042	1619	do { /* Store LFN entries in bottom first */
annieluo2	0:d6c9b09b4042	1620	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1621	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1622	fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);
annieluo2	0:d6c9b09b4042	1623	dp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	1624	res = dir_next(dp, 0); /* Next entry */
annieluo2	0:d6c9b09b4042	1625	} while (res == FR_OK && --nent);
annieluo2	0:d6c9b09b4042	1626	}
annieluo2	0:d6c9b09b4042	1627	}
annieluo2	0:d6c9b09b4042	1628	#else /* Non LFN configuration */
annieluo2	0:d6c9b09b4042	1629	res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
annieluo2	0:d6c9b09b4042	1630	#endif
annieluo2	0:d6c9b09b4042	1631
annieluo2	0:d6c9b09b4042	1632	if (res == FR_OK) { /* Set SFN entry */
annieluo2	0:d6c9b09b4042	1633	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1634	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1635	mem_set(dp->dir, 0, SZ_DIRE); /* Clean the entry */
annieluo2	0:d6c9b09b4042	1636	mem_cpy(dp->dir, dp->fn, 11); /* Put SFN */
annieluo2	0:d6c9b09b4042	1637	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1638	dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY \| NS_EXT); /* Put NT flag */
annieluo2	0:d6c9b09b4042	1639	#endif
annieluo2	0:d6c9b09b4042	1640	dp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	1641	}
annieluo2	0:d6c9b09b4042	1642	}
annieluo2	0:d6c9b09b4042	1643
annieluo2	0:d6c9b09b4042	1644	return res;
annieluo2	0:d6c9b09b4042	1645	}
annieluo2	0:d6c9b09b4042	1646	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	1647
annieluo2	0:d6c9b09b4042	1648
annieluo2	0:d6c9b09b4042	1649
annieluo2	0:d6c9b09b4042	1650
annieluo2	0:d6c9b09b4042	1651	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1652	/* Remove an object from the directory */
annieluo2	0:d6c9b09b4042	1653	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1654	#if !_FS_READONLY && !_FS_MINIMIZE
annieluo2	0:d6c9b09b4042	1655	static
annieluo2	0:d6c9b09b4042	1656	FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
annieluo2	0:d6c9b09b4042	1657	FATFS_DIR* dp /* Directory object pointing the entry to be removed */
annieluo2	0:d6c9b09b4042	1658	)
annieluo2	0:d6c9b09b4042	1659	{
annieluo2	0:d6c9b09b4042	1660	FRESULT res;
annieluo2	0:d6c9b09b4042	1661	#if _USE_LFN /* LFN configuration */
annieluo2	0:d6c9b09b4042	1662	UINT i;
annieluo2	0:d6c9b09b4042	1663
annieluo2	0:d6c9b09b4042	1664	i = dp->index; /* SFN index */
annieluo2	0:d6c9b09b4042	1665	res = dir_sdi(dp, (dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx); /* Goto the SFN or top of the LFN entries */
annieluo2	0:d6c9b09b4042	1666	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1667	do {
annieluo2	0:d6c9b09b4042	1668	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1669	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	1670	mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
annieluo2	0:d6c9b09b4042	1671	*dp->dir = DDEM;
annieluo2	0:d6c9b09b4042	1672	dp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	1673	if (dp->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
annieluo2	0:d6c9b09b4042	1674	res = dir_next(dp, 0); /* Next entry */
annieluo2	0:d6c9b09b4042	1675	} while (res == FR_OK);
annieluo2	0:d6c9b09b4042	1676	if (res == FR_NO_FILE) res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	1677	}
annieluo2	0:d6c9b09b4042	1678
annieluo2	0:d6c9b09b4042	1679	#else /* Non LFN configuration */
annieluo2	0:d6c9b09b4042	1680	res = dir_sdi(dp, dp->index);
annieluo2	0:d6c9b09b4042	1681	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1682	res = move_window(dp->fs, dp->sect);
annieluo2	0:d6c9b09b4042	1683	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	1684	mem_set(dp->dir, 0, SZ_DIRE); /* Clear and mark the entry "deleted" */
annieluo2	0:d6c9b09b4042	1685	*dp->dir = DDEM;
annieluo2	0:d6c9b09b4042	1686	dp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	1687	}
annieluo2	0:d6c9b09b4042	1688	}
annieluo2	0:d6c9b09b4042	1689	#endif
annieluo2	0:d6c9b09b4042	1690
annieluo2	0:d6c9b09b4042	1691	return res;
annieluo2	0:d6c9b09b4042	1692	}
annieluo2	0:d6c9b09b4042	1693	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	1694
annieluo2	0:d6c9b09b4042	1695
annieluo2	0:d6c9b09b4042	1696
annieluo2	0:d6c9b09b4042	1697
annieluo2	0:d6c9b09b4042	1698	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1699	/* Get file information from directory entry */
annieluo2	0:d6c9b09b4042	1700	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1701	#if _FS_MINIMIZE <= 1 \|\| _FS_RPATH >= 2
annieluo2	0:d6c9b09b4042	1702	static
annieluo2	0:d6c9b09b4042	1703	void get_fileinfo ( /* No return code */
annieluo2	0:d6c9b09b4042	1704	FATFS_DIR* dp, /* Pointer to the directory object */
annieluo2	0:d6c9b09b4042	1705	FILINFO* fno /* Pointer to the file information to be filled */
annieluo2	0:d6c9b09b4042	1706	)
annieluo2	0:d6c9b09b4042	1707	{
annieluo2	0:d6c9b09b4042	1708	UINT i;
annieluo2	0:d6c9b09b4042	1709	TCHAR *p, c;
annieluo2	0:d6c9b09b4042	1710	BYTE *dir;
annieluo2	0:d6c9b09b4042	1711	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1712	WCHAR w, *lfn;
annieluo2	0:d6c9b09b4042	1713	#endif
annieluo2	0:d6c9b09b4042	1714
annieluo2	0:d6c9b09b4042	1715	p = fno->fname;
annieluo2	0:d6c9b09b4042	1716	if (dp->sect) { /* Get SFN */
annieluo2	0:d6c9b09b4042	1717	dir = dp->dir;
annieluo2	0:d6c9b09b4042	1718	i = 0;
annieluo2	0:d6c9b09b4042	1719	while (i < 11) { /* Copy name body and extension */
annieluo2	0:d6c9b09b4042	1720	c = (TCHAR)dir[i++];
annieluo2	0:d6c9b09b4042	1721	if (c == ' ') continue; /* Skip padding spaces */
annieluo2	0:d6c9b09b4042	1722	if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */
annieluo2	0:d6c9b09b4042	1723	if (i == 9) p++ = '.'; / Insert a . if extension is exist */
annieluo2	0:d6c9b09b4042	1724	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1725	if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY)))
annieluo2	0:d6c9b09b4042	1726	c += 0x20; /* To lower */
annieluo2	0:d6c9b09b4042	1727	#if _LFN_UNICODE
annieluo2	0:d6c9b09b4042	1728	if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i]))
annieluo2	0:d6c9b09b4042	1729	c = c << 8 \| dir[i++];
annieluo2	0:d6c9b09b4042	1730	c = ff_convert(c, 1); /* OEM -> Unicode */
annieluo2	0:d6c9b09b4042	1731	if (!c) c = '?';
annieluo2	0:d6c9b09b4042	1732	#endif
annieluo2	0:d6c9b09b4042	1733	#endif
annieluo2	0:d6c9b09b4042	1734	*p++ = c;
annieluo2	0:d6c9b09b4042	1735	}
annieluo2	0:d6c9b09b4042	1736	fno->fattrib = dir[DIR_Attr]; /* Attribute */
annieluo2	0:d6c9b09b4042	1737	fno->fsize = LD_DWORD(dir + DIR_FileSize); /* Size */
annieluo2	0:d6c9b09b4042	1738	fno->fdate = LD_WORD(dir + DIR_WrtDate); /* Date */
annieluo2	0:d6c9b09b4042	1739	fno->ftime = LD_WORD(dir + DIR_WrtTime); /* Time */
annieluo2	0:d6c9b09b4042	1740	}
annieluo2	0:d6c9b09b4042	1741	p = 0; / Terminate SFN string by a \0 */
annieluo2	0:d6c9b09b4042	1742
annieluo2	0:d6c9b09b4042	1743	#if _USE_LFN
annieluo2	0:d6c9b09b4042	1744	if (fno->lfname) {
annieluo2	0:d6c9b09b4042	1745	i = 0; p = fno->lfname;
annieluo2	0:d6c9b09b4042	1746	if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) { /* Get LFN if available */
annieluo2	0:d6c9b09b4042	1747	lfn = dp->lfn;
annieluo2	0:d6c9b09b4042	1748	while ((w = lfn++) != 0) { / Get an LFN character */
annieluo2	0:d6c9b09b4042	1749	#if !_LFN_UNICODE
annieluo2	0:d6c9b09b4042	1750	w = ff_convert(w, 0); /* Unicode -> OEM */
annieluo2	0:d6c9b09b4042	1751	if (!w) { i = 0; break; } /* No LFN if it could not be converted */
annieluo2	0:d6c9b09b4042	1752	if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
annieluo2	0:d6c9b09b4042	1753	p[i++] = (TCHAR)(w >> 8);
annieluo2	0:d6c9b09b4042	1754	#endif
annieluo2	0:d6c9b09b4042	1755	if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */
annieluo2	0:d6c9b09b4042	1756	p[i++] = (TCHAR)w;
annieluo2	0:d6c9b09b4042	1757	}
annieluo2	0:d6c9b09b4042	1758	}
annieluo2	0:d6c9b09b4042	1759	p[i] = 0; /* Terminate LFN string by a \0 */
annieluo2	0:d6c9b09b4042	1760	}
annieluo2	0:d6c9b09b4042	1761	#endif
annieluo2	0:d6c9b09b4042	1762	}
annieluo2	0:d6c9b09b4042	1763	#endif /* _FS_MINIMIZE <= 1 \|\| _FS_RPATH >= 2 */
annieluo2	0:d6c9b09b4042	1764
annieluo2	0:d6c9b09b4042	1765
annieluo2	0:d6c9b09b4042	1766
annieluo2	0:d6c9b09b4042	1767
annieluo2	0:d6c9b09b4042	1768	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1769	/* Pattern matching */
annieluo2	0:d6c9b09b4042	1770	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1771	#if _USE_FIND && _FS_MINIMIZE <= 1
annieluo2	0:d6c9b09b4042	1772	static
annieluo2	0:d6c9b09b4042	1773	WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */
annieluo2	0:d6c9b09b4042	1774	const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */
annieluo2	0:d6c9b09b4042	1775	)
annieluo2	0:d6c9b09b4042	1776	{
annieluo2	0:d6c9b09b4042	1777	WCHAR chr;
annieluo2	0:d6c9b09b4042	1778
annieluo2	0:d6c9b09b4042	1779	#if !_LFN_UNICODE
annieluo2	0:d6c9b09b4042	1780	chr = (BYTE)(ptr)++; /* Get a byte */
annieluo2	0:d6c9b09b4042	1781	if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
annieluo2	0:d6c9b09b4042	1782	if (IsDBCS1(chr) && IsDBCS2(*ptr)) / Get DBC 2nd byte if needed */
annieluo2	0:d6c9b09b4042	1783	chr = chr << 8 \| (BYTE)(ptr)++;
annieluo2	0:d6c9b09b4042	1784	#ifdef _EXCVT
annieluo2	0:d6c9b09b4042	1785	if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
annieluo2	0:d6c9b09b4042	1786	#endif
annieluo2	0:d6c9b09b4042	1787	#else
annieluo2	0:d6c9b09b4042	1788	chr = ff_wtoupper((ptr)++); /* Get a word and to upper */
annieluo2	0:d6c9b09b4042	1789	#endif
annieluo2	0:d6c9b09b4042	1790	return chr;
annieluo2	0:d6c9b09b4042	1791	}
annieluo2	0:d6c9b09b4042	1792
annieluo2	0:d6c9b09b4042	1793
annieluo2	0:d6c9b09b4042	1794	static
annieluo2	0:d6c9b09b4042	1795	int pattern_matching ( /* 0:mismatched, 1:matched */
annieluo2	0:d6c9b09b4042	1796	const TCHAR* pat, /* Matching pattern */
annieluo2	0:d6c9b09b4042	1797	const TCHAR* nam, /* String to be tested */
annieluo2	0:d6c9b09b4042	1798	int skip, /* Number of pre-skip chars (number of ?s) */
annieluo2	0:d6c9b09b4042	1799	int inf /* Infinite search (* specified) */
annieluo2	0:d6c9b09b4042	1800	)
annieluo2	0:d6c9b09b4042	1801	{
annieluo2	0:d6c9b09b4042	1802	const TCHAR pp, np;
annieluo2	0:d6c9b09b4042	1803	WCHAR pc, nc;
annieluo2	0:d6c9b09b4042	1804	int nm, nx;
annieluo2	0:d6c9b09b4042	1805
annieluo2	0:d6c9b09b4042	1806
annieluo2	0:d6c9b09b4042	1807	while (skip--) { /* Pre-skip name chars */
annieluo2	0:d6c9b09b4042	1808	if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
annieluo2	0:d6c9b09b4042	1809	}
annieluo2	0:d6c9b09b4042	1810	if (!pat && inf) return 1; / (short circuit) */
annieluo2	0:d6c9b09b4042	1811
annieluo2	0:d6c9b09b4042	1812	do {
annieluo2	0:d6c9b09b4042	1813	pp = pat; np = nam; /* Top of pattern and name to match */
annieluo2	0:d6c9b09b4042	1814	for (;;) {
annieluo2	0:d6c9b09b4042	1815	if (pp == '?' \|\| pp == '') { / Wildcard? */
annieluo2	0:d6c9b09b4042	1816	nm = nx = 0;
annieluo2	0:d6c9b09b4042	1817	do { /* Analyze the wildcard chars */
annieluo2	0:d6c9b09b4042	1818	if (*pp++ == '?') nm++; else nx = 1;
annieluo2	0:d6c9b09b4042	1819	} while (pp == '?' \|\| pp == '*');
annieluo2	0:d6c9b09b4042	1820	if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
annieluo2	0:d6c9b09b4042	1821	nc = np; break; / Branch mismatched */
annieluo2	0:d6c9b09b4042	1822	}
annieluo2	0:d6c9b09b4042	1823	pc = get_achar(&pp); /* Get a pattern char */
annieluo2	0:d6c9b09b4042	1824	nc = get_achar(&np); /* Get a name char */
annieluo2	0:d6c9b09b4042	1825	if (pc != nc) break; /* Branch mismatched? */
annieluo2	0:d6c9b09b4042	1826	if (!pc) return 1; /* Branch matched? (matched at end of both strings) */
annieluo2	0:d6c9b09b4042	1827	}
annieluo2	0:d6c9b09b4042	1828	get_achar(&nam); /* nam++ */
annieluo2	0:d6c9b09b4042	1829	} while (inf && nc); /* Retry until end of name if infinite search is specified */
annieluo2	0:d6c9b09b4042	1830
annieluo2	0:d6c9b09b4042	1831	return 0;
annieluo2	0:d6c9b09b4042	1832	}
annieluo2	0:d6c9b09b4042	1833	#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
annieluo2	0:d6c9b09b4042	1834
annieluo2	0:d6c9b09b4042	1835
annieluo2	0:d6c9b09b4042	1836
annieluo2	0:d6c9b09b4042	1837
annieluo2	0:d6c9b09b4042	1838	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1839	/* Pick a top segment and create the object name in directory form */
annieluo2	0:d6c9b09b4042	1840	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	1841
annieluo2	0:d6c9b09b4042	1842	static
annieluo2	0:d6c9b09b4042	1843	FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
annieluo2	0:d6c9b09b4042	1844	FATFS_DIR* dp, /* Pointer to the directory object */
annieluo2	0:d6c9b09b4042	1845	const TCHAR** path /* Pointer to pointer to the segment in the path string */
annieluo2	0:d6c9b09b4042	1846	)
annieluo2	0:d6c9b09b4042	1847	{
annieluo2	0:d6c9b09b4042	1848	#if _USE_LFN /* LFN configuration */
annieluo2	0:d6c9b09b4042	1849	BYTE b, cf;
annieluo2	0:d6c9b09b4042	1850	WCHAR w, *lfn;
annieluo2	0:d6c9b09b4042	1851	UINT i, ni, si, di;
annieluo2	0:d6c9b09b4042	1852	const TCHAR *p;
annieluo2	0:d6c9b09b4042	1853
annieluo2	0:d6c9b09b4042	1854	/* Create LFN in Unicode */
annieluo2	0:d6c9b09b4042	1855	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Strip duplicated separator */
annieluo2	0:d6c9b09b4042	1856	lfn = dp->lfn;
annieluo2	0:d6c9b09b4042	1857	si = di = 0;
annieluo2	0:d6c9b09b4042	1858	for (;;) {
annieluo2	0:d6c9b09b4042	1859	w = p[si++]; /* Get a character */
annieluo2	0:d6c9b09b4042	1860	if (w < ' ' \|\| w == '/' \|\| w == '\\') break; /* Break on end of segment */
annieluo2	0:d6c9b09b4042	1861	if (di >= _MAX_LFN) /* Reject too long name */
annieluo2	0:d6c9b09b4042	1862	return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	1863	#if !_LFN_UNICODE
annieluo2	0:d6c9b09b4042	1864	w &= 0xFF;
annieluo2	0:d6c9b09b4042	1865	if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
annieluo2	0:d6c9b09b4042	1866	b = (BYTE)p[si++]; /* Get 2nd byte */
annieluo2	0:d6c9b09b4042	1867	w = (w << 8) + b; /* Create a DBC */
annieluo2	0:d6c9b09b4042	1868	if (!IsDBCS2(b))
annieluo2	0:d6c9b09b4042	1869	return FR_INVALID_NAME; /* Reject invalid sequence */
annieluo2	0:d6c9b09b4042	1870	}
annieluo2	0:d6c9b09b4042	1871	w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
annieluo2	0:d6c9b09b4042	1872	if (!w) return FR_INVALID_NAME; /* Reject invalid code */
annieluo2	0:d6c9b09b4042	1873	#endif
annieluo2	0:d6c9b09b4042	1874	if (w < 0x80 && chk_chr("\":<>\?\|\x7F", w)) / Reject illegal characters for LFN */
annieluo2	0:d6c9b09b4042	1875	return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	1876	lfn[di++] = w; /* Store the Unicode character */
annieluo2	0:d6c9b09b4042	1877	}
annieluo2	0:d6c9b09b4042	1878	path = &p[si]; / Return pointer to the next segment */
annieluo2	0:d6c9b09b4042	1879	cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
annieluo2	0:d6c9b09b4042	1880	#if _FS_RPATH
annieluo2	0:d6c9b09b4042	1881	if ((di == 1 && lfn[di - 1] == '.') \|\|
annieluo2	0:d6c9b09b4042	1882	(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot entry? */
annieluo2	0:d6c9b09b4042	1883	lfn[di] = 0;
annieluo2	0:d6c9b09b4042	1884	for (i = 0; i < 11; i++) /* Create dot name for SFN entry */
annieluo2	0:d6c9b09b4042	1885	dp->fn[i] = (i < di) ? '.' : ' ';
annieluo2	0:d6c9b09b4042	1886	dp->fn[i] = cf \| NS_DOT; /* This is a dot entry */
annieluo2	0:d6c9b09b4042	1887	return FR_OK;
annieluo2	0:d6c9b09b4042	1888	}
annieluo2	0:d6c9b09b4042	1889	#endif
annieluo2	0:d6c9b09b4042	1890	while (di) { /* Snip off trailing spaces and dots if exist */
annieluo2	0:d6c9b09b4042	1891	w = lfn[di - 1];
annieluo2	0:d6c9b09b4042	1892	if (w != ' ' && w != '.') break;
annieluo2	0:d6c9b09b4042	1893	di--;
annieluo2	0:d6c9b09b4042	1894	}
annieluo2	0:d6c9b09b4042	1895	if (!di) return FR_INVALID_NAME; /* Reject nul string */
annieluo2	0:d6c9b09b4042	1896	lfn[di] = 0; /* LFN is created */
annieluo2	0:d6c9b09b4042	1897
annieluo2	0:d6c9b09b4042	1898	/* Create SFN in directory form */
annieluo2	0:d6c9b09b4042	1899	mem_set(dp->fn, ' ', 11);
annieluo2	0:d6c9b09b4042	1900	for (si = 0; lfn[si] == ' ' \|\| lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
annieluo2	0:d6c9b09b4042	1901	if (si) cf \|= NS_LOSS \| NS_LFN;
annieluo2	0:d6c9b09b4042	1902	while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
annieluo2	0:d6c9b09b4042	1903
annieluo2	0:d6c9b09b4042	1904	b = i = 0; ni = 8;
annieluo2	0:d6c9b09b4042	1905	for (;;) {
annieluo2	0:d6c9b09b4042	1906	w = lfn[si++]; /* Get an LFN character */
annieluo2	0:d6c9b09b4042	1907	if (!w) break; /* Break on end of the LFN */
annieluo2	0:d6c9b09b4042	1908	if (w == ' ' \|\| (w == '.' && si != di)) { /* Remove spaces and dots */
annieluo2	0:d6c9b09b4042	1909	cf \|= NS_LOSS \| NS_LFN; continue;
annieluo2	0:d6c9b09b4042	1910	}
annieluo2	0:d6c9b09b4042	1911
annieluo2	0:d6c9b09b4042	1912	if (i >= ni \|\| si == di) { /* Extension or end of SFN */
annieluo2	0:d6c9b09b4042	1913	if (ni == 11) { /* Long extension */
annieluo2	0:d6c9b09b4042	1914	cf \|= NS_LOSS \| NS_LFN; break;
annieluo2	0:d6c9b09b4042	1915	}
annieluo2	0:d6c9b09b4042	1916	if (si != di) cf \|= NS_LOSS \| NS_LFN; /* Out of 8.3 format */
annieluo2	0:d6c9b09b4042	1917	if (si > di) break; /* No extension */
annieluo2	0:d6c9b09b4042	1918	si = di; i = 8; ni = 11; /* Enter extension section */
annieluo2	0:d6c9b09b4042	1919	b <<= 2; continue;
annieluo2	0:d6c9b09b4042	1920	}
annieluo2	0:d6c9b09b4042	1921
annieluo2	0:d6c9b09b4042	1922	if (w >= 0x80) { /* Non ASCII character */
annieluo2	0:d6c9b09b4042	1923	#ifdef _EXCVT
annieluo2	0:d6c9b09b4042	1924	w = ff_convert(w, 0); /* Unicode -> OEM code */
annieluo2	0:d6c9b09b4042	1925	if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
annieluo2	0:d6c9b09b4042	1926	#else
annieluo2	0:d6c9b09b4042	1927	w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
annieluo2	0:d6c9b09b4042	1928	#endif
annieluo2	0:d6c9b09b4042	1929	cf \|= NS_LFN; /* Force create LFN entry */
annieluo2	0:d6c9b09b4042	1930	}
annieluo2	0:d6c9b09b4042	1931
annieluo2	0:d6c9b09b4042	1932	if (_DF1S && w >= 0x100) { /* Is this DBC? (always false at SBCS cfg) */
annieluo2	0:d6c9b09b4042	1933	if (i >= ni - 1) {
annieluo2	0:d6c9b09b4042	1934	cf \|= NS_LOSS \| NS_LFN; i = ni; continue;
annieluo2	0:d6c9b09b4042	1935	}
annieluo2	0:d6c9b09b4042	1936	dp->fn[i++] = (BYTE)(w >> 8);
annieluo2	0:d6c9b09b4042	1937	} else { /* SBC */
annieluo2	0:d6c9b09b4042	1938	if (!w \|\| chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */
annieluo2	0:d6c9b09b4042	1939	w = '_'; cf \|= NS_LOSS \| NS_LFN;/* Lossy conversion */
annieluo2	0:d6c9b09b4042	1940	} else {
annieluo2	0:d6c9b09b4042	1941	if (IsUpper(w)) { /* ASCII large capital */
annieluo2	0:d6c9b09b4042	1942	b \|= 2;
annieluo2	0:d6c9b09b4042	1943	} else {
annieluo2	0:d6c9b09b4042	1944	if (IsLower(w)) { /* ASCII small capital */
annieluo2	0:d6c9b09b4042	1945	b \|= 1; w -= 0x20;
annieluo2	0:d6c9b09b4042	1946	}
annieluo2	0:d6c9b09b4042	1947	}
annieluo2	0:d6c9b09b4042	1948	}
annieluo2	0:d6c9b09b4042	1949	}
annieluo2	0:d6c9b09b4042	1950	dp->fn[i++] = (BYTE)w;
annieluo2	0:d6c9b09b4042	1951	}
annieluo2	0:d6c9b09b4042	1952
annieluo2	0:d6c9b09b4042	1953	if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
annieluo2	0:d6c9b09b4042	1954
annieluo2	0:d6c9b09b4042	1955	if (ni == 8) b <<= 2;
annieluo2	0:d6c9b09b4042	1956	if ((b & 0x0C) == 0x0C \|\| (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
annieluo2	0:d6c9b09b4042	1957	cf \|= NS_LFN;
annieluo2	0:d6c9b09b4042	1958	if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
annieluo2	0:d6c9b09b4042	1959	if ((b & 0x03) == 0x01) cf \|= NS_EXT; /* NT flag (Extension has only small capital) */
annieluo2	0:d6c9b09b4042	1960	if ((b & 0x0C) == 0x04) cf \|= NS_BODY; /* NT flag (Filename has only small capital) */
annieluo2	0:d6c9b09b4042	1961	}
annieluo2	0:d6c9b09b4042	1962
annieluo2	0:d6c9b09b4042	1963	dp->fn[NSFLAG] = cf; /* SFN is created */
annieluo2	0:d6c9b09b4042	1964
annieluo2	0:d6c9b09b4042	1965	return FR_OK;
annieluo2	0:d6c9b09b4042	1966
annieluo2	0:d6c9b09b4042	1967
annieluo2	0:d6c9b09b4042	1968	#else /* Non-LFN configuration */
annieluo2	0:d6c9b09b4042	1969	BYTE b, c, d, *sfn;
annieluo2	0:d6c9b09b4042	1970	UINT ni, si, i;
annieluo2	0:d6c9b09b4042	1971	const char *p;
annieluo2	0:d6c9b09b4042	1972
annieluo2	0:d6c9b09b4042	1973	/* Create file name in directory form */
annieluo2	0:d6c9b09b4042	1974	for (p = path; p == '/' \|\| p == '\\'; p++) ; / Skip duplicated separator */
annieluo2	0:d6c9b09b4042	1975	sfn = dp->fn;
annieluo2	0:d6c9b09b4042	1976	mem_set(sfn, ' ', 11);
annieluo2	0:d6c9b09b4042	1977	si = i = b = 0; ni = 8;
annieluo2	0:d6c9b09b4042	1978	#if _FS_RPATH
annieluo2	0:d6c9b09b4042	1979	if (p[si] == '.') { /* Is this a dot entry? */
annieluo2	0:d6c9b09b4042	1980	for (;;) {
annieluo2	0:d6c9b09b4042	1981	c = (BYTE)p[si++];
annieluo2	0:d6c9b09b4042	1982	if (c != '.' \|\| si >= 3) break;
annieluo2	0:d6c9b09b4042	1983	sfn[i++] = c;
annieluo2	0:d6c9b09b4042	1984	}
annieluo2	0:d6c9b09b4042	1985	if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	1986	path = &p[si]; / Return pointer to the next segment */
annieluo2	0:d6c9b09b4042	1987	sfn[NSFLAG] = (c <= ' ') ? NS_LAST \| NS_DOT : NS_DOT; /* Set last segment flag if end of path */
annieluo2	0:d6c9b09b4042	1988	return FR_OK;
annieluo2	0:d6c9b09b4042	1989	}
annieluo2	0:d6c9b09b4042	1990	#endif
annieluo2	0:d6c9b09b4042	1991	for (;;) {
annieluo2	0:d6c9b09b4042	1992	c = (BYTE)p[si++];
annieluo2	0:d6c9b09b4042	1993	if (c <= ' ' \|\| c == '/' \|\| c == '\\') break; /* Break on end of segment */
annieluo2	0:d6c9b09b4042	1994	if (c == '.' \|\| i >= ni) {
annieluo2	0:d6c9b09b4042	1995	if (ni != 8 \|\| c != '.') return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	1996	i = 8; ni = 11;
annieluo2	0:d6c9b09b4042	1997	b <<= 2; continue;
annieluo2	0:d6c9b09b4042	1998	}
annieluo2	0:d6c9b09b4042	1999	if (c >= 0x80) { /* Extended character? */
annieluo2	0:d6c9b09b4042	2000	b \|= 3; /* Eliminate NT flag */
annieluo2	0:d6c9b09b4042	2001	#ifdef _EXCVT
annieluo2	0:d6c9b09b4042	2002	c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */
annieluo2	0:d6c9b09b4042	2003	#else
annieluo2	0:d6c9b09b4042	2004	#if !_DF1S
annieluo2	0:d6c9b09b4042	2005	return FR_INVALID_NAME; /* Reject extended characters (ASCII cfg) */
annieluo2	0:d6c9b09b4042	2006	#endif
annieluo2	0:d6c9b09b4042	2007	#endif
annieluo2	0:d6c9b09b4042	2008	}
annieluo2	0:d6c9b09b4042	2009	if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
annieluo2	0:d6c9b09b4042	2010	d = (BYTE)p[si++]; /* Get 2nd byte */
annieluo2	0:d6c9b09b4042	2011	if (!IsDBCS2(d) \|\| i >= ni - 1) /* Reject invalid DBC */
annieluo2	0:d6c9b09b4042	2012	return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	2013	sfn[i++] = c;
annieluo2	0:d6c9b09b4042	2014	sfn[i++] = d;
annieluo2	0:d6c9b09b4042	2015	} else { /* SBC */
annieluo2	0:d6c9b09b4042	2016	if (chk_chr("\"+,:;<=>\?[]\|\x7F", c)) / Reject illegal chrs for SFN */
annieluo2	0:d6c9b09b4042	2017	return FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	2018	if (IsUpper(c)) { /* ASCII large capital? */
annieluo2	0:d6c9b09b4042	2019	b \|= 2;
annieluo2	0:d6c9b09b4042	2020	} else {
annieluo2	0:d6c9b09b4042	2021	if (IsLower(c)) { /* ASCII small capital? */
annieluo2	0:d6c9b09b4042	2022	b \|= 1; c -= 0x20;
annieluo2	0:d6c9b09b4042	2023	}
annieluo2	0:d6c9b09b4042	2024	}
annieluo2	0:d6c9b09b4042	2025	sfn[i++] = c;
annieluo2	0:d6c9b09b4042	2026	}
annieluo2	0:d6c9b09b4042	2027	}
annieluo2	0:d6c9b09b4042	2028	path = &p[si]; / Return pointer to the next segment */
annieluo2	0:d6c9b09b4042	2029	c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
annieluo2	0:d6c9b09b4042	2030
annieluo2	0:d6c9b09b4042	2031	if (!i) return FR_INVALID_NAME; /* Reject nul string */
annieluo2	0:d6c9b09b4042	2032	if (sfn[0] == DDEM) sfn[0] = RDDEM; /* When first character collides with DDEM, replace it with RDDEM */
annieluo2	0:d6c9b09b4042	2033
annieluo2	0:d6c9b09b4042	2034	if (ni == 8) b <<= 2;
annieluo2	0:d6c9b09b4042	2035	if ((b & 0x03) == 0x01) c \|= NS_EXT; /* NT flag (Name extension has only small capital) */
annieluo2	0:d6c9b09b4042	2036	if ((b & 0x0C) == 0x04) c \|= NS_BODY; /* NT flag (Name body has only small capital) */
annieluo2	0:d6c9b09b4042	2037
annieluo2	0:d6c9b09b4042	2038	sfn[NSFLAG] = c; /* Store NT flag, File name is created */
annieluo2	0:d6c9b09b4042	2039
annieluo2	0:d6c9b09b4042	2040	return FR_OK;
annieluo2	0:d6c9b09b4042	2041	#endif
annieluo2	0:d6c9b09b4042	2042	}
annieluo2	0:d6c9b09b4042	2043
annieluo2	0:d6c9b09b4042	2044
annieluo2	0:d6c9b09b4042	2045
annieluo2	0:d6c9b09b4042	2046
annieluo2	0:d6c9b09b4042	2047	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2048	/* Follow a file path */
annieluo2	0:d6c9b09b4042	2049	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2050
annieluo2	0:d6c9b09b4042	2051	static
annieluo2	0:d6c9b09b4042	2052	FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
annieluo2	0:d6c9b09b4042	2053	FATFS_DIR* dp, /* Directory object to return last directory and found object */
annieluo2	0:d6c9b09b4042	2054	const TCHAR* path /* Full-path string to find a file or directory */
annieluo2	0:d6c9b09b4042	2055	)
annieluo2	0:d6c9b09b4042	2056	{
annieluo2	0:d6c9b09b4042	2057	FRESULT res;
annieluo2	0:d6c9b09b4042	2058	BYTE *dir, ns;
annieluo2	0:d6c9b09b4042	2059
annieluo2	0:d6c9b09b4042	2060
annieluo2	0:d6c9b09b4042	2061	#if _FS_RPATH
annieluo2	0:d6c9b09b4042	2062	if (path == '/' \|\| path == '\\') { /* There is a heading separator */
annieluo2	0:d6c9b09b4042	2063	path++; dp->sclust = 0; /* Strip it and start from the root directory */
annieluo2	0:d6c9b09b4042	2064	} else { /* No heading separator */
annieluo2	0:d6c9b09b4042	2065	dp->sclust = dp->fs->cdir; /* Start from the current directory */
annieluo2	0:d6c9b09b4042	2066	}
annieluo2	0:d6c9b09b4042	2067	#else
annieluo2	0:d6c9b09b4042	2068	if (path == '/' \|\| path == '\\') /* Strip heading separator if exist */
annieluo2	0:d6c9b09b4042	2069	path++;
annieluo2	0:d6c9b09b4042	2070	dp->sclust = 0; /* Always start from the root directory */
annieluo2	0:d6c9b09b4042	2071	#endif
annieluo2	0:d6c9b09b4042	2072
annieluo2	0:d6c9b09b4042	2073	if ((UINT)path < ' ') { / Null path name is the origin directory itself */
annieluo2	0:d6c9b09b4042	2074	res = dir_sdi(dp, 0);
annieluo2	0:d6c9b09b4042	2075	dp->dir = 0;
annieluo2	0:d6c9b09b4042	2076	} else { /* Follow path */
annieluo2	0:d6c9b09b4042	2077	for (;;) {
annieluo2	0:d6c9b09b4042	2078	res = create_name(dp, &path); /* Get a segment name of the path */
annieluo2	0:d6c9b09b4042	2079	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2080	res = dir_find(dp); /* Find an object with the sagment name */
annieluo2	0:d6c9b09b4042	2081	ns = dp->fn[NSFLAG];
annieluo2	0:d6c9b09b4042	2082	if (res != FR_OK) { /* Failed to find the object */
annieluo2	0:d6c9b09b4042	2083	if (res == FR_NO_FILE) { /* Object is not found */
annieluo2	0:d6c9b09b4042	2084	if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, */
annieluo2	0:d6c9b09b4042	2085	dp->sclust = 0; dp->dir = 0; /* it is the root directory and stay there */
annieluo2	0:d6c9b09b4042	2086	if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */
annieluo2	0:d6c9b09b4042	2087	res = FR_OK; /* Ended at the root directroy. Function completed. */
annieluo2	0:d6c9b09b4042	2088	} else { /* Could not find the object */
annieluo2	0:d6c9b09b4042	2089	if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */
annieluo2	0:d6c9b09b4042	2090	}
annieluo2	0:d6c9b09b4042	2091	}
annieluo2	0:d6c9b09b4042	2092	break;
annieluo2	0:d6c9b09b4042	2093	}
annieluo2	0:d6c9b09b4042	2094	if (ns & NS_LAST) break; /* Last segment matched. Function completed. */
annieluo2	0:d6c9b09b4042	2095	dir = dp->dir; /* Follow the sub-directory */
annieluo2	0:d6c9b09b4042	2096	if (!(dir[DIR_Attr] & AM_DIR)) { /* It is not a sub-directory and cannot follow */
annieluo2	0:d6c9b09b4042	2097	res = FR_NO_PATH; break;
annieluo2	0:d6c9b09b4042	2098	}
annieluo2	0:d6c9b09b4042	2099	dp->sclust = ld_clust(dp->fs, dir);
annieluo2	0:d6c9b09b4042	2100	}
annieluo2	0:d6c9b09b4042	2101	}
annieluo2	0:d6c9b09b4042	2102
annieluo2	0:d6c9b09b4042	2103	return res;
annieluo2	0:d6c9b09b4042	2104	}
annieluo2	0:d6c9b09b4042	2105
annieluo2	0:d6c9b09b4042	2106
annieluo2	0:d6c9b09b4042	2107
annieluo2	0:d6c9b09b4042	2108
annieluo2	0:d6c9b09b4042	2109	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2110	/* Get logical drive number from path name */
annieluo2	0:d6c9b09b4042	2111	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2112
annieluo2	0:d6c9b09b4042	2113	static
annieluo2	0:d6c9b09b4042	2114	int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
annieluo2	0:d6c9b09b4042	2115	const TCHAR** path /* Pointer to pointer to the path name */
annieluo2	0:d6c9b09b4042	2116	)
annieluo2	0:d6c9b09b4042	2117	{
annieluo2	0:d6c9b09b4042	2118	const TCHAR tp, tt;
annieluo2	0:d6c9b09b4042	2119	UINT i;
annieluo2	0:d6c9b09b4042	2120	int vol = -1;
annieluo2	0:d6c9b09b4042	2121	#if _STR_VOLUME_ID /* Find string drive id */
annieluo2	0:d6c9b09b4042	2122	static const char* const str[] = {_VOLUME_STRS};
annieluo2	0:d6c9b09b4042	2123	const char *sp;
annieluo2	0:d6c9b09b4042	2124	char c;
annieluo2	0:d6c9b09b4042	2125	TCHAR tc;
annieluo2	0:d6c9b09b4042	2126	#endif
annieluo2	0:d6c9b09b4042	2127
annieluo2	0:d6c9b09b4042	2128
annieluo2	0:d6c9b09b4042	2129	if (path) { / If the pointer is not a null */
annieluo2	0:d6c9b09b4042	2130	for (tt = path; (UINT)tt >= (_USE_LFN ? ' ' : '!') && tt != ':'; tt++) ; / Find ':' in the path */
annieluo2	0:d6c9b09b4042	2131	if (tt == ':') { / If a ':' is exist in the path name */
annieluo2	0:d6c9b09b4042	2132	tp = *path;
annieluo2	0:d6c9b09b4042	2133	i = *tp++ - '0';
annieluo2	0:d6c9b09b4042	2134	if (i < 10 && tp == tt) { /* Is there a numeric drive id? */
annieluo2	0:d6c9b09b4042	2135	if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
annieluo2	0:d6c9b09b4042	2136	vol = (int)i;
annieluo2	0:d6c9b09b4042	2137	*path = ++tt;
annieluo2	0:d6c9b09b4042	2138	}
annieluo2	0:d6c9b09b4042	2139	}
annieluo2	0:d6c9b09b4042	2140	#if _STR_VOLUME_ID
annieluo2	0:d6c9b09b4042	2141	else { /* No numeric drive number, find string drive id */
annieluo2	0:d6c9b09b4042	2142	i = 0; tt++;
annieluo2	0:d6c9b09b4042	2143	do {
annieluo2	0:d6c9b09b4042	2144	sp = str[i]; tp = *path;
annieluo2	0:d6c9b09b4042	2145	do { /* Compare a string drive id with path name */
annieluo2	0:d6c9b09b4042	2146	c = sp++; tc = tp++;
annieluo2	0:d6c9b09b4042	2147	if (IsLower(tc)) tc -= 0x20;
annieluo2	0:d6c9b09b4042	2148	} while (c && (TCHAR)c == tc);
annieluo2	0:d6c9b09b4042	2149	} while ((c \|\| tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */
annieluo2	0:d6c9b09b4042	2150	if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */
annieluo2	0:d6c9b09b4042	2151	vol = (int)i;
annieluo2	0:d6c9b09b4042	2152	*path = tt;
annieluo2	0:d6c9b09b4042	2153	}
annieluo2	0:d6c9b09b4042	2154	}
annieluo2	0:d6c9b09b4042	2155	#endif
annieluo2	0:d6c9b09b4042	2156	return vol;
annieluo2	0:d6c9b09b4042	2157	}
annieluo2	0:d6c9b09b4042	2158	#if _FS_RPATH && _VOLUMES >= 2
annieluo2	0:d6c9b09b4042	2159	vol = CurrVol; /* Current drive */
annieluo2	0:d6c9b09b4042	2160	#else
annieluo2	0:d6c9b09b4042	2161	vol = 0; /* Drive 0 */
annieluo2	0:d6c9b09b4042	2162	#endif
annieluo2	0:d6c9b09b4042	2163	}
annieluo2	0:d6c9b09b4042	2164	return vol;
annieluo2	0:d6c9b09b4042	2165	}
annieluo2	0:d6c9b09b4042	2166
annieluo2	0:d6c9b09b4042	2167
annieluo2	0:d6c9b09b4042	2168
annieluo2	0:d6c9b09b4042	2169
annieluo2	0:d6c9b09b4042	2170	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2171	/* Load a sector and check if it is an FAT boot sector */
annieluo2	0:d6c9b09b4042	2172	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2173
annieluo2	0:d6c9b09b4042	2174	static
annieluo2	0:d6c9b09b4042	2175	BYTE check_fs ( /* 0:Valid FAT-BS, 1:Valid BS but not FAT, 2:Not a BS, 3:Disk error */
annieluo2	0:d6c9b09b4042	2176	FATFS* fs, /* File system object */
annieluo2	0:d6c9b09b4042	2177	DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
annieluo2	0:d6c9b09b4042	2178	)
annieluo2	0:d6c9b09b4042	2179	{
annieluo2	0:d6c9b09b4042	2180	fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */
annieluo2	0:d6c9b09b4042	2181	if (move_window(fs, sect) != FR_OK) /* Load boot record */
annieluo2	0:d6c9b09b4042	2182	return 3;
annieluo2	0:d6c9b09b4042	2183
annieluo2	0:d6c9b09b4042	2184	if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
annieluo2	0:d6c9b09b4042	2185	return 2;
annieluo2	0:d6c9b09b4042	2186
annieluo2	0:d6c9b09b4042	2187	if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
annieluo2	0:d6c9b09b4042	2188	return 0;
annieluo2	0:d6c9b09b4042	2189	if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
annieluo2	0:d6c9b09b4042	2190	return 0;
annieluo2	0:d6c9b09b4042	2191
annieluo2	0:d6c9b09b4042	2192	return 1;
annieluo2	0:d6c9b09b4042	2193	}
annieluo2	0:d6c9b09b4042	2194
annieluo2	0:d6c9b09b4042	2195
annieluo2	0:d6c9b09b4042	2196
annieluo2	0:d6c9b09b4042	2197
annieluo2	0:d6c9b09b4042	2198	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2199	/* Find logical drive and check if the volume is mounted */
annieluo2	0:d6c9b09b4042	2200	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2201
annieluo2	0:d6c9b09b4042	2202	static
annieluo2	0:d6c9b09b4042	2203	FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
annieluo2	0:d6c9b09b4042	2204	FATFS** rfs, /* Pointer to pointer to the found file system object */
annieluo2	0:d6c9b09b4042	2205	const TCHAR** path, /* Pointer to pointer to the path name (drive number) */
annieluo2	0:d6c9b09b4042	2206	BYTE wmode /* !=0: Check write protection for write access */
annieluo2	0:d6c9b09b4042	2207	)
annieluo2	0:d6c9b09b4042	2208	{
annieluo2	0:d6c9b09b4042	2209	BYTE fmt, *pt;
annieluo2	0:d6c9b09b4042	2210	int vol;
annieluo2	0:d6c9b09b4042	2211	DSTATUS stat;
annieluo2	0:d6c9b09b4042	2212	DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
annieluo2	0:d6c9b09b4042	2213	WORD nrsv;
annieluo2	0:d6c9b09b4042	2214	FATFS *fs;
annieluo2	0:d6c9b09b4042	2215	UINT i;
annieluo2	0:d6c9b09b4042	2216
annieluo2	0:d6c9b09b4042	2217
annieluo2	0:d6c9b09b4042	2218	/* Get logical drive number from the path name */
annieluo2	0:d6c9b09b4042	2219	*rfs = 0;
annieluo2	0:d6c9b09b4042	2220	vol = get_ldnumber(path);
annieluo2	0:d6c9b09b4042	2221	if (vol < 0) return FR_INVALID_DRIVE;
annieluo2	0:d6c9b09b4042	2222
annieluo2	0:d6c9b09b4042	2223	/* Check if the file system object is valid or not */
annieluo2	0:d6c9b09b4042	2224	fs = FatFs[vol]; /* Get pointer to the file system object */
annieluo2	0:d6c9b09b4042	2225	if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
annieluo2	0:d6c9b09b4042	2226
annieluo2	0:d6c9b09b4042	2227	ENTER_FF(fs); /* Lock the volume */
annieluo2	0:d6c9b09b4042	2228	rfs = fs; / Return pointer to the file system object */
annieluo2	0:d6c9b09b4042	2229
annieluo2	0:d6c9b09b4042	2230	if (fs->fs_type) { /* If the volume has been mounted */
annieluo2	0:d6c9b09b4042	2231	stat = disk_status(fs->drv);
annieluo2	0:d6c9b09b4042	2232	if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
annieluo2	0:d6c9b09b4042	2233	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
annieluo2	0:d6c9b09b4042	2234	return FR_WRITE_PROTECTED;
annieluo2	0:d6c9b09b4042	2235	return FR_OK; /* The file system object is valid */
annieluo2	0:d6c9b09b4042	2236	}
annieluo2	0:d6c9b09b4042	2237	}
annieluo2	0:d6c9b09b4042	2238
annieluo2	0:d6c9b09b4042	2239	/* The file system object is not valid. */
annieluo2	0:d6c9b09b4042	2240	/* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
annieluo2	0:d6c9b09b4042	2241
annieluo2	0:d6c9b09b4042	2242	fs->fs_type = 0; /* Clear the file system object */
annieluo2	0:d6c9b09b4042	2243	fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
annieluo2	0:d6c9b09b4042	2244	stat = disk_initialize(fs->drv); /* Initialize the physical drive */
annieluo2	0:d6c9b09b4042	2245	if (stat & STA_NOINIT) /* Check if the initialization succeeded */
annieluo2	0:d6c9b09b4042	2246	return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
annieluo2	0:d6c9b09b4042	2247	if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
annieluo2	0:d6c9b09b4042	2248	return FR_WRITE_PROTECTED;
annieluo2	0:d6c9b09b4042	2249	#if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */
annieluo2	0:d6c9b09b4042	2250	if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
annieluo2	0:d6c9b09b4042	2251	\|\| SS(fs) < _MIN_SS \|\| SS(fs) > _MAX_SS) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	2252	#endif
annieluo2	0:d6c9b09b4042	2253	/* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
annieluo2	0:d6c9b09b4042	2254	bsect = 0;
annieluo2	0:d6c9b09b4042	2255	fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */
annieluo2	0:d6c9b09b4042	2256	if (fmt == 1 \|\| (!fmt && (LD2PT(vol)))) { /* Not an FAT boot sector or forced partition number */
annieluo2	0:d6c9b09b4042	2257	for (i = 0; i < 4; i++) { /* Get partition offset */
annieluo2	0:d6c9b09b4042	2258	pt = fs->win + MBR_Table + i * SZ_PTE;
annieluo2	0:d6c9b09b4042	2259	br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0;
annieluo2	0:d6c9b09b4042	2260	}
annieluo2	0:d6c9b09b4042	2261	i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
annieluo2	0:d6c9b09b4042	2262	if (i) i--;
annieluo2	0:d6c9b09b4042	2263	do { /* Find an FAT volume */
annieluo2	0:d6c9b09b4042	2264	bsect = br[i];
annieluo2	0:d6c9b09b4042	2265	fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */
annieluo2	0:d6c9b09b4042	2266	} while (!LD2PT(vol) && fmt && ++i < 4);
annieluo2	0:d6c9b09b4042	2267	}
annieluo2	0:d6c9b09b4042	2268	if (fmt == 3) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
annieluo2	0:d6c9b09b4042	2269	if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
annieluo2	0:d6c9b09b4042	2270
annieluo2	0:d6c9b09b4042	2271	/* An FAT volume is found. Following code initializes the file system object */
annieluo2	0:d6c9b09b4042	2272
annieluo2	0:d6c9b09b4042	2273	if (LD_WORD(fs->win + BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
annieluo2	0:d6c9b09b4042	2274	return FR_NO_FILESYSTEM;
annieluo2	0:d6c9b09b4042	2275
annieluo2	0:d6c9b09b4042	2276	fasize = LD_WORD(fs->win + BPB_FATSz16); /* Number of sectors per FAT */
annieluo2	0:d6c9b09b4042	2277	if (!fasize) fasize = LD_DWORD(fs->win + BPB_FATSz32);
annieluo2	0:d6c9b09b4042	2278	fs->fsize = fasize;
annieluo2	0:d6c9b09b4042	2279
annieluo2	0:d6c9b09b4042	2280	fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
annieluo2	0:d6c9b09b4042	2281	if (fs->n_fats != 1 && fs->n_fats != 2) /* (Must be 1 or 2) */
annieluo2	0:d6c9b09b4042	2282	return FR_NO_FILESYSTEM;
annieluo2	0:d6c9b09b4042	2283	fasize = fs->n_fats; / Number of sectors for FAT area */
annieluo2	0:d6c9b09b4042	2284
annieluo2	0:d6c9b09b4042	2285	fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
annieluo2	0:d6c9b09b4042	2286	if (!fs->csize \|\| (fs->csize & (fs->csize - 1))) /* (Must be power of 2) */
annieluo2	0:d6c9b09b4042	2287	return FR_NO_FILESYSTEM;
annieluo2	0:d6c9b09b4042	2288
annieluo2	0:d6c9b09b4042	2289	fs->n_rootdir = LD_WORD(fs->win + BPB_RootEntCnt); /* Number of root directory entries */
annieluo2	0:d6c9b09b4042	2290	if (fs->n_rootdir % (SS(fs) / SZ_DIRE)) /* (Must be sector aligned) */
annieluo2	0:d6c9b09b4042	2291	return FR_NO_FILESYSTEM;
annieluo2	0:d6c9b09b4042	2292
annieluo2	0:d6c9b09b4042	2293	tsect = LD_WORD(fs->win + BPB_TotSec16); /* Number of sectors on the volume */
annieluo2	0:d6c9b09b4042	2294	if (!tsect) tsect = LD_DWORD(fs->win + BPB_TotSec32);
annieluo2	0:d6c9b09b4042	2295
annieluo2	0:d6c9b09b4042	2296	nrsv = LD_WORD(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */
annieluo2	0:d6c9b09b4042	2297	if (!nrsv) return FR_NO_FILESYSTEM; /* (Must not be 0) */
annieluo2	0:d6c9b09b4042	2298
annieluo2	0:d6c9b09b4042	2299	/* Determine the FAT sub type */
annieluo2	0:d6c9b09b4042	2300	sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIRE); /* RSV + FAT + FATFS_DIR */
annieluo2	0:d6c9b09b4042	2301	if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
annieluo2	0:d6c9b09b4042	2302	nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
annieluo2	0:d6c9b09b4042	2303	if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
annieluo2	0:d6c9b09b4042	2304	fmt = FS_FAT12;
annieluo2	0:d6c9b09b4042	2305	if (nclst >= MIN_FAT16) fmt = FS_FAT16;
annieluo2	0:d6c9b09b4042	2306	if (nclst >= MIN_FAT32) fmt = FS_FAT32;
annieluo2	0:d6c9b09b4042	2307
annieluo2	0:d6c9b09b4042	2308	/* Boundaries and Limits */
annieluo2	0:d6c9b09b4042	2309	fs->n_fatent = nclst + 2; /* Number of FAT entries */
annieluo2	0:d6c9b09b4042	2310	fs->volbase = bsect; /* Volume start sector */
annieluo2	0:d6c9b09b4042	2311	fs->fatbase = bsect + nrsv; /* FAT start sector */
annieluo2	0:d6c9b09b4042	2312	fs->database = bsect + sysect; /* Data start sector */
annieluo2	0:d6c9b09b4042	2313	if (fmt == FS_FAT32) {
annieluo2	0:d6c9b09b4042	2314	if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
annieluo2	0:d6c9b09b4042	2315	fs->dirbase = LD_DWORD(fs->win + BPB_RootClus); /* Root directory start cluster */
annieluo2	0:d6c9b09b4042	2316	szbfat = fs->n_fatent * 4; /* (Needed FAT size) */
annieluo2	0:d6c9b09b4042	2317	} else {
annieluo2	0:d6c9b09b4042	2318	if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
annieluo2	0:d6c9b09b4042	2319	fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
annieluo2	0:d6c9b09b4042	2320	szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */
annieluo2	0:d6c9b09b4042	2321	fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
annieluo2	0:d6c9b09b4042	2322	}
annieluo2	0:d6c9b09b4042	2323	if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than the size needed) */
annieluo2	0:d6c9b09b4042	2324	return FR_NO_FILESYSTEM;
annieluo2	0:d6c9b09b4042	2325
annieluo2	0:d6c9b09b4042	2326	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2327	/* Initialize cluster allocation information */
annieluo2	0:d6c9b09b4042	2328	fs->last_clust = fs->free_clust = 0xFFFFFFFF;
annieluo2	0:d6c9b09b4042	2329
annieluo2	0:d6c9b09b4042	2330	/* Get fsinfo if available */
annieluo2	0:d6c9b09b4042	2331	fs->fsi_flag = 0x80;
annieluo2	0:d6c9b09b4042	2332	#if (_FS_NOFSINFO & 3) != 3
annieluo2	0:d6c9b09b4042	2333	if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo == 1 */
annieluo2	0:d6c9b09b4042	2334	&& LD_WORD(fs->win + BPB_FSInfo) == 1
annieluo2	0:d6c9b09b4042	2335	&& move_window(fs, bsect + 1) == FR_OK)
annieluo2	0:d6c9b09b4042	2336	{
annieluo2	0:d6c9b09b4042	2337	fs->fsi_flag = 0;
annieluo2	0:d6c9b09b4042	2338	if (LD_WORD(fs->win + BS_55AA) == 0xAA55 /* Load FSINFO data if available */
annieluo2	0:d6c9b09b4042	2339	&& LD_DWORD(fs->win + FSI_LeadSig) == 0x41615252
annieluo2	0:d6c9b09b4042	2340	&& LD_DWORD(fs->win + FSI_StrucSig) == 0x61417272)
annieluo2	0:d6c9b09b4042	2341	{
annieluo2	0:d6c9b09b4042	2342	#if (_FS_NOFSINFO & 1) == 0
annieluo2	0:d6c9b09b4042	2343	fs->free_clust = LD_DWORD(fs->win + FSI_Free_Count);
annieluo2	0:d6c9b09b4042	2344	#endif
annieluo2	0:d6c9b09b4042	2345	#if (_FS_NOFSINFO & 2) == 0
annieluo2	0:d6c9b09b4042	2346	fs->last_clust = LD_DWORD(fs->win + FSI_Nxt_Free);
annieluo2	0:d6c9b09b4042	2347	#endif
annieluo2	0:d6c9b09b4042	2348	}
annieluo2	0:d6c9b09b4042	2349	}
annieluo2	0:d6c9b09b4042	2350	#endif
annieluo2	0:d6c9b09b4042	2351	#endif
annieluo2	0:d6c9b09b4042	2352	fs->fs_type = fmt; /* FAT sub-type */
annieluo2	0:d6c9b09b4042	2353	fs->id = ++Fsid; /* File system mount ID */
annieluo2	0:d6c9b09b4042	2354	#if _FS_RPATH
annieluo2	0:d6c9b09b4042	2355	fs->cdir = 0; /* Set current directory to root */
annieluo2	0:d6c9b09b4042	2356	#endif
annieluo2	0:d6c9b09b4042	2357	#if _FS_LOCK /* Clear file lock semaphores */
annieluo2	0:d6c9b09b4042	2358	clear_lock(fs);
annieluo2	0:d6c9b09b4042	2359	#endif
annieluo2	0:d6c9b09b4042	2360
annieluo2	0:d6c9b09b4042	2361	return FR_OK;
annieluo2	0:d6c9b09b4042	2362	}
annieluo2	0:d6c9b09b4042	2363
annieluo2	0:d6c9b09b4042	2364
annieluo2	0:d6c9b09b4042	2365
annieluo2	0:d6c9b09b4042	2366
annieluo2	0:d6c9b09b4042	2367	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2368	/* Check if the file/directory object is valid or not */
annieluo2	0:d6c9b09b4042	2369	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2370
annieluo2	0:d6c9b09b4042	2371	static
annieluo2	0:d6c9b09b4042	2372	FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
annieluo2	0:d6c9b09b4042	2373	void* obj /* Pointer to the object FIL/FATFS_DIR to check validity */
annieluo2	0:d6c9b09b4042	2374	)
annieluo2	0:d6c9b09b4042	2375	{
annieluo2	0:d6c9b09b4042	2376	FIL fil = (FIL)obj; /* Assuming offset of .fs and .id in the FIL/FATFS_DIR structure is identical */
annieluo2	0:d6c9b09b4042	2377
annieluo2	0:d6c9b09b4042	2378
annieluo2	0:d6c9b09b4042	2379	if (!fil \|\| !fil->fs \|\| !fil->fs->fs_type \|\| fil->fs->id != fil->id \|\| (disk_status(fil->fs->drv) & STA_NOINIT))
annieluo2	0:d6c9b09b4042	2380	return FR_INVALID_OBJECT;
annieluo2	0:d6c9b09b4042	2381
annieluo2	0:d6c9b09b4042	2382	ENTER_FF(fil->fs); /* Lock file system */
annieluo2	0:d6c9b09b4042	2383
annieluo2	0:d6c9b09b4042	2384	return FR_OK;
annieluo2	0:d6c9b09b4042	2385	}
annieluo2	0:d6c9b09b4042	2386
annieluo2	0:d6c9b09b4042	2387
annieluo2	0:d6c9b09b4042	2388
annieluo2	0:d6c9b09b4042	2389
annieluo2	0:d6c9b09b4042	2390	/*--------------------------------------------------------------------------
annieluo2	0:d6c9b09b4042	2391
annieluo2	0:d6c9b09b4042	2392	Public Functions
annieluo2	0:d6c9b09b4042	2393
annieluo2	0:d6c9b09b4042	2394	---------------------------------------------------------------------------*/
annieluo2	0:d6c9b09b4042	2395
annieluo2	0:d6c9b09b4042	2396
annieluo2	0:d6c9b09b4042	2397
annieluo2	0:d6c9b09b4042	2398	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2399	/* Mount/Unmount a Logical Drive */
annieluo2	0:d6c9b09b4042	2400	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2401
annieluo2	0:d6c9b09b4042	2402	FRESULT f_mount (
annieluo2	0:d6c9b09b4042	2403	FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/
annieluo2	0:d6c9b09b4042	2404	const TCHAR* path, /* Logical drive number to be mounted/unmounted */
annieluo2	0:d6c9b09b4042	2405	BYTE opt /* 0:Do not mount (delayed mount), 1:Mount immediately */
annieluo2	0:d6c9b09b4042	2406	)
annieluo2	0:d6c9b09b4042	2407	{
annieluo2	0:d6c9b09b4042	2408	FATFS *cfs;
annieluo2	0:d6c9b09b4042	2409	int vol;
annieluo2	0:d6c9b09b4042	2410	FRESULT res;
annieluo2	0:d6c9b09b4042	2411	const TCHAR *rp = path;
annieluo2	0:d6c9b09b4042	2412
annieluo2	0:d6c9b09b4042	2413
annieluo2	0:d6c9b09b4042	2414	vol = get_ldnumber(&rp);
annieluo2	0:d6c9b09b4042	2415	if (vol < 0) return FR_INVALID_DRIVE;
annieluo2	0:d6c9b09b4042	2416	cfs = FatFs[vol]; /* Pointer to fs object */
annieluo2	0:d6c9b09b4042	2417
annieluo2	0:d6c9b09b4042	2418	if (cfs) {
annieluo2	0:d6c9b09b4042	2419	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	2420	clear_lock(cfs);
annieluo2	0:d6c9b09b4042	2421	#endif
annieluo2	0:d6c9b09b4042	2422	#if _FS_REENTRANT /* Discard sync object of the current volume */
annieluo2	0:d6c9b09b4042	2423	if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	2424	#endif
annieluo2	0:d6c9b09b4042	2425	cfs->fs_type = 0; /* Clear old fs object */
annieluo2	0:d6c9b09b4042	2426	}
annieluo2	0:d6c9b09b4042	2427
annieluo2	0:d6c9b09b4042	2428	if (fs) {
annieluo2	0:d6c9b09b4042	2429	fs->fs_type = 0; /* Clear new fs object */
annieluo2	0:d6c9b09b4042	2430	#if _FS_REENTRANT /* Create sync object for the new volume */
annieluo2	0:d6c9b09b4042	2431	if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
annieluo2	0:d6c9b09b4042	2432	#endif
annieluo2	0:d6c9b09b4042	2433	}
annieluo2	0:d6c9b09b4042	2434	FatFs[vol] = fs; /* Register new fs object */
annieluo2	0:d6c9b09b4042	2435
annieluo2	0:d6c9b09b4042	2436	if (!fs \|\| opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */
annieluo2	0:d6c9b09b4042	2437
annieluo2	0:d6c9b09b4042	2438	res = find_volume(&fs, &path, 0); /* Force mounted the volume */
annieluo2	0:d6c9b09b4042	2439	LEAVE_FF(fs, res);
annieluo2	0:d6c9b09b4042	2440	}
annieluo2	0:d6c9b09b4042	2441
annieluo2	0:d6c9b09b4042	2442
annieluo2	0:d6c9b09b4042	2443
annieluo2	0:d6c9b09b4042	2444
annieluo2	0:d6c9b09b4042	2445	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2446	/* Open or Create a File */
annieluo2	0:d6c9b09b4042	2447	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2448
annieluo2	0:d6c9b09b4042	2449	FRESULT f_open (
annieluo2	0:d6c9b09b4042	2450	FIL* fp, /* Pointer to the blank file object */
annieluo2	0:d6c9b09b4042	2451	const TCHAR* path, /* Pointer to the file name */
annieluo2	0:d6c9b09b4042	2452	BYTE mode /* Access mode and file open mode flags */
annieluo2	0:d6c9b09b4042	2453	)
annieluo2	0:d6c9b09b4042	2454	{
annieluo2	0:d6c9b09b4042	2455	FRESULT res;
annieluo2	0:d6c9b09b4042	2456	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	2457	BYTE *dir;
annieluo2	0:d6c9b09b4042	2458	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	2459	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2460	DWORD dw, cl;
annieluo2	0:d6c9b09b4042	2461	#endif
annieluo2	0:d6c9b09b4042	2462
annieluo2	0:d6c9b09b4042	2463
annieluo2	0:d6c9b09b4042	2464	if (!fp) return FR_INVALID_OBJECT;
annieluo2	0:d6c9b09b4042	2465	fp->fs = 0; /* Clear file object */
annieluo2	0:d6c9b09b4042	2466
annieluo2	0:d6c9b09b4042	2467	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	2468	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2469	mode &= FA_READ \| FA_WRITE \| FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW;
annieluo2	0:d6c9b09b4042	2470	res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ));
annieluo2	0:d6c9b09b4042	2471	#else
annieluo2	0:d6c9b09b4042	2472	mode &= FA_READ;
annieluo2	0:d6c9b09b4042	2473	res = find_volume(&dj.fs, &path, 0);
annieluo2	0:d6c9b09b4042	2474	#endif
annieluo2	0:d6c9b09b4042	2475	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2476	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	2477	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	2478	dir = dj.dir;
annieluo2	0:d6c9b09b4042	2479	#if !_FS_READONLY /* R/W configuration */
annieluo2	0:d6c9b09b4042	2480	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2481	if (!dir) /* Default directory itself */
annieluo2	0:d6c9b09b4042	2482	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	2483	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	2484	else
annieluo2	0:d6c9b09b4042	2485	res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
annieluo2	0:d6c9b09b4042	2486	#endif
annieluo2	0:d6c9b09b4042	2487	}
annieluo2	0:d6c9b09b4042	2488	/* Create or Open a file */
annieluo2	0:d6c9b09b4042	2489	if (mode & (FA_CREATE_ALWAYS \| FA_OPEN_ALWAYS \| FA_CREATE_NEW)) {
annieluo2	0:d6c9b09b4042	2490	if (res != FR_OK) { /* No file, create new */
annieluo2	0:d6c9b09b4042	2491	if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
annieluo2	0:d6c9b09b4042	2492	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	2493	res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
annieluo2	0:d6c9b09b4042	2494	#else
annieluo2	0:d6c9b09b4042	2495	res = dir_register(&dj);
annieluo2	0:d6c9b09b4042	2496	#endif
annieluo2	0:d6c9b09b4042	2497	mode \|= FA_CREATE_ALWAYS; /* File is created */
annieluo2	0:d6c9b09b4042	2498	dir = dj.dir; /* New entry */
annieluo2	0:d6c9b09b4042	2499	}
annieluo2	0:d6c9b09b4042	2500	else { /* Any object is already existing */
annieluo2	0:d6c9b09b4042	2501	if (dir[DIR_Attr] & (AM_RDO \| AM_DIR)) { /* Cannot overwrite it (R/O or FATFS_DIR) */
annieluo2	0:d6c9b09b4042	2502	res = FR_DENIED;
annieluo2	0:d6c9b09b4042	2503	} else {
annieluo2	0:d6c9b09b4042	2504	if (mode & FA_CREATE_NEW) /* Cannot create as new file */
annieluo2	0:d6c9b09b4042	2505	res = FR_EXIST;
annieluo2	0:d6c9b09b4042	2506	}
annieluo2	0:d6c9b09b4042	2507	}
annieluo2	0:d6c9b09b4042	2508	if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
annieluo2	0:d6c9b09b4042	2509	dw = GET_FATTIME();
annieluo2	0:d6c9b09b4042	2510	ST_DWORD(dir + DIR_CrtTime, dw);/* Set created time */
annieluo2	0:d6c9b09b4042	2511	ST_DWORD(dir + DIR_WrtTime, dw);/* Set modified time */
annieluo2	0:d6c9b09b4042	2512	dir[DIR_Attr] = 0; /* Reset attribute */
annieluo2	0:d6c9b09b4042	2513	ST_DWORD(dir + DIR_FileSize, 0);/* Reset file size */
annieluo2	0:d6c9b09b4042	2514	cl = ld_clust(dj.fs, dir); /* Get cluster chain */
annieluo2	0:d6c9b09b4042	2515	st_clust(dir, 0); /* Reset cluster */
annieluo2	0:d6c9b09b4042	2516	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	2517	if (cl) { /* Remove the cluster chain if exist */
annieluo2	0:d6c9b09b4042	2518	dw = dj.fs->winsect;
annieluo2	0:d6c9b09b4042	2519	res = remove_chain(dj.fs, cl);
annieluo2	0:d6c9b09b4042	2520	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2521	dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
annieluo2	0:d6c9b09b4042	2522	res = move_window(dj.fs, dw);
annieluo2	0:d6c9b09b4042	2523	}
annieluo2	0:d6c9b09b4042	2524	}
annieluo2	0:d6c9b09b4042	2525	}
annieluo2	0:d6c9b09b4042	2526	}
annieluo2	0:d6c9b09b4042	2527	else { /* Open an existing file */
annieluo2	0:d6c9b09b4042	2528	if (res == FR_OK) { /* Following succeeded */
annieluo2	0:d6c9b09b4042	2529	if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
annieluo2	0:d6c9b09b4042	2530	res = FR_NO_FILE;
annieluo2	0:d6c9b09b4042	2531	} else {
annieluo2	0:d6c9b09b4042	2532	if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
annieluo2	0:d6c9b09b4042	2533	res = FR_DENIED;
annieluo2	0:d6c9b09b4042	2534	}
annieluo2	0:d6c9b09b4042	2535	}
annieluo2	0:d6c9b09b4042	2536	}
annieluo2	0:d6c9b09b4042	2537	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2538	if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
annieluo2	0:d6c9b09b4042	2539	mode \|= FA__WRITTEN;
annieluo2	0:d6c9b09b4042	2540	fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
annieluo2	0:d6c9b09b4042	2541	fp->dir_ptr = dir;
annieluo2	0:d6c9b09b4042	2542	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	2543	fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
annieluo2	0:d6c9b09b4042	2544	if (!fp->lockid) res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	2545	#endif
annieluo2	0:d6c9b09b4042	2546	}
annieluo2	0:d6c9b09b4042	2547
annieluo2	0:d6c9b09b4042	2548	#else /* R/O configuration */
annieluo2	0:d6c9b09b4042	2549	if (res == FR_OK) { /* Follow succeeded */
annieluo2	0:d6c9b09b4042	2550	dir = dj.dir;
annieluo2	0:d6c9b09b4042	2551	if (!dir) { /* Current directory itself */
annieluo2	0:d6c9b09b4042	2552	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	2553	} else {
annieluo2	0:d6c9b09b4042	2554	if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
annieluo2	0:d6c9b09b4042	2555	res = FR_NO_FILE;
annieluo2	0:d6c9b09b4042	2556	}
annieluo2	0:d6c9b09b4042	2557	}
annieluo2	0:d6c9b09b4042	2558	#endif
annieluo2	0:d6c9b09b4042	2559	FREE_BUF();
annieluo2	0:d6c9b09b4042	2560
annieluo2	0:d6c9b09b4042	2561	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2562	fp->flag = mode; /* File access mode */
annieluo2	0:d6c9b09b4042	2563	fp->err = 0; /* Clear error flag */
annieluo2	0:d6c9b09b4042	2564	fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
annieluo2	0:d6c9b09b4042	2565	fp->fsize = LD_DWORD(dir + DIR_FileSize); /* File size */
annieluo2	0:d6c9b09b4042	2566	fp->fptr = 0; /* File pointer */
annieluo2	0:d6c9b09b4042	2567	fp->dsect = 0;
annieluo2	0:d6c9b09b4042	2568	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	2569	fp->cltbl = 0; /* Normal seek mode */
annieluo2	0:d6c9b09b4042	2570	#endif
annieluo2	0:d6c9b09b4042	2571	fp->fs = dj.fs; /* Validate file object */
annieluo2	0:d6c9b09b4042	2572	fp->id = fp->fs->id;
annieluo2	0:d6c9b09b4042	2573	}
annieluo2	0:d6c9b09b4042	2574	}
annieluo2	0:d6c9b09b4042	2575
annieluo2	0:d6c9b09b4042	2576	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	2577	}
annieluo2	0:d6c9b09b4042	2578
annieluo2	0:d6c9b09b4042	2579
annieluo2	0:d6c9b09b4042	2580
annieluo2	0:d6c9b09b4042	2581
annieluo2	0:d6c9b09b4042	2582	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2583	/* Read File */
annieluo2	0:d6c9b09b4042	2584	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2585
annieluo2	0:d6c9b09b4042	2586	FRESULT f_read (
annieluo2	0:d6c9b09b4042	2587	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	2588	void* buff, /* Pointer to data buffer */
annieluo2	0:d6c9b09b4042	2589	UINT btr, /* Number of bytes to read */
annieluo2	0:d6c9b09b4042	2590	UINT* br /* Pointer to number of bytes read */
annieluo2	0:d6c9b09b4042	2591	)
annieluo2	0:d6c9b09b4042	2592	{
annieluo2	0:d6c9b09b4042	2593	FRESULT res;
annieluo2	0:d6c9b09b4042	2594	DWORD clst, sect, remain;
annieluo2	0:d6c9b09b4042	2595	UINT rcnt, cc;
annieluo2	0:d6c9b09b4042	2596	BYTE csect, rbuff = (BYTE)buff;
annieluo2	0:d6c9b09b4042	2597
annieluo2	0:d6c9b09b4042	2598
annieluo2	0:d6c9b09b4042	2599	br = 0; / Clear read byte counter */
annieluo2	0:d6c9b09b4042	2600
annieluo2	0:d6c9b09b4042	2601	res = validate(fp); /* Check validity */
annieluo2	0:d6c9b09b4042	2602	if (res != FR_OK) LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	2603	if (fp->err) /* Check error */
annieluo2	0:d6c9b09b4042	2604	LEAVE_FF(fp->fs, (FRESULT)fp->err);
annieluo2	0:d6c9b09b4042	2605	if (!(fp->flag & FA_READ)) /* Check access mode */
annieluo2	0:d6c9b09b4042	2606	LEAVE_FF(fp->fs, FR_DENIED);
annieluo2	0:d6c9b09b4042	2607	remain = fp->fsize - fp->fptr;
annieluo2	0:d6c9b09b4042	2608	if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
annieluo2	0:d6c9b09b4042	2609
annieluo2	0:d6c9b09b4042	2610	for ( ; btr; /* Repeat until all data read */
annieluo2	0:d6c9b09b4042	2611	rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
annieluo2	0:d6c9b09b4042	2612	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
annieluo2	0:d6c9b09b4042	2613	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
annieluo2	0:d6c9b09b4042	2614	if (!csect) { /* On the cluster boundary? */
annieluo2	0:d6c9b09b4042	2615	if (fp->fptr == 0) { /* On the top of the file? */
annieluo2	0:d6c9b09b4042	2616	clst = fp->sclust; /* Follow from the origin */
annieluo2	0:d6c9b09b4042	2617	} else { /* Middle or end of the file */
annieluo2	0:d6c9b09b4042	2618	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	2619	if (fp->cltbl)
annieluo2	0:d6c9b09b4042	2620	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
annieluo2	0:d6c9b09b4042	2621	else
annieluo2	0:d6c9b09b4042	2622	#endif
annieluo2	0:d6c9b09b4042	2623	clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
annieluo2	0:d6c9b09b4042	2624	}
annieluo2	0:d6c9b09b4042	2625	if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	2626	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2627	fp->clust = clst; /* Update current cluster */
annieluo2	0:d6c9b09b4042	2628	}
annieluo2	0:d6c9b09b4042	2629	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
annieluo2	0:d6c9b09b4042	2630	if (!sect) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	2631	sect += csect;
annieluo2	0:d6c9b09b4042	2632	cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
annieluo2	0:d6c9b09b4042	2633	if (cc) { /* Read maximum contiguous sectors directly */
annieluo2	0:d6c9b09b4042	2634	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
annieluo2	0:d6c9b09b4042	2635	cc = fp->fs->csize - csect;
annieluo2	0:d6c9b09b4042	2636	if (disk_read(fp->fs->drv, rbuff, sect, cc) != RES_OK)
annieluo2	0:d6c9b09b4042	2637	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2638	#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
annieluo2	0:d6c9b09b4042	2639	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2640	if (fp->fs->wflag && fp->fs->winsect - sect < cc)
annieluo2	0:d6c9b09b4042	2641	mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
annieluo2	0:d6c9b09b4042	2642	#else
annieluo2	0:d6c9b09b4042	2643	if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
annieluo2	0:d6c9b09b4042	2644	mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
annieluo2	0:d6c9b09b4042	2645	#endif
annieluo2	0:d6c9b09b4042	2646	#endif
annieluo2	0:d6c9b09b4042	2647	rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
annieluo2	0:d6c9b09b4042	2648	continue;
annieluo2	0:d6c9b09b4042	2649	}
annieluo2	0:d6c9b09b4042	2650	#if !_FS_TINY
annieluo2	0:d6c9b09b4042	2651	if (fp->dsect != sect) { /* Load data sector if not in cache */
annieluo2	0:d6c9b09b4042	2652	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2653	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
annieluo2	0:d6c9b09b4042	2654	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	2655	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2656	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	2657	}
annieluo2	0:d6c9b09b4042	2658	#endif
annieluo2	0:d6c9b09b4042	2659	if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
annieluo2	0:d6c9b09b4042	2660	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2661	}
annieluo2	0:d6c9b09b4042	2662	#endif
annieluo2	0:d6c9b09b4042	2663	fp->dsect = sect;
annieluo2	0:d6c9b09b4042	2664	}
annieluo2	0:d6c9b09b4042	2665	rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
annieluo2	0:d6c9b09b4042	2666	if (rcnt > btr) rcnt = btr;
annieluo2	0:d6c9b09b4042	2667	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2668	if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
annieluo2	0:d6c9b09b4042	2669	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2670	mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
annieluo2	0:d6c9b09b4042	2671	#else
annieluo2	0:d6c9b09b4042	2672	mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
annieluo2	0:d6c9b09b4042	2673	#endif
annieluo2	0:d6c9b09b4042	2674	}
annieluo2	0:d6c9b09b4042	2675
annieluo2	0:d6c9b09b4042	2676	LEAVE_FF(fp->fs, FR_OK);
annieluo2	0:d6c9b09b4042	2677	}
annieluo2	0:d6c9b09b4042	2678
annieluo2	0:d6c9b09b4042	2679
annieluo2	0:d6c9b09b4042	2680
annieluo2	0:d6c9b09b4042	2681
annieluo2	0:d6c9b09b4042	2682	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2683	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2684	/* Write File */
annieluo2	0:d6c9b09b4042	2685	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2686
annieluo2	0:d6c9b09b4042	2687	FRESULT f_write (
annieluo2	0:d6c9b09b4042	2688	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	2689	const void buff, / Pointer to the data to be written */
annieluo2	0:d6c9b09b4042	2690	UINT btw, /* Number of bytes to write */
annieluo2	0:d6c9b09b4042	2691	UINT* bw /* Pointer to number of bytes written */
annieluo2	0:d6c9b09b4042	2692	)
annieluo2	0:d6c9b09b4042	2693	{
annieluo2	0:d6c9b09b4042	2694	FRESULT res;
annieluo2	0:d6c9b09b4042	2695	DWORD clst, sect;
annieluo2	0:d6c9b09b4042	2696	UINT wcnt, cc;
annieluo2	0:d6c9b09b4042	2697	const BYTE wbuff = (const BYTE)buff;
annieluo2	0:d6c9b09b4042	2698	BYTE csect;
annieluo2	0:d6c9b09b4042	2699	bool need_sync = false;
annieluo2	0:d6c9b09b4042	2700
annieluo2	0:d6c9b09b4042	2701	bw = 0; / Clear write byte counter */
annieluo2	0:d6c9b09b4042	2702
annieluo2	0:d6c9b09b4042	2703	res = validate(fp); /* Check validity */
annieluo2	0:d6c9b09b4042	2704	if (res != FR_OK) LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	2705	if (fp->err) /* Check error */
annieluo2	0:d6c9b09b4042	2706	LEAVE_FF(fp->fs, (FRESULT)fp->err);
annieluo2	0:d6c9b09b4042	2707	if (!(fp->flag & FA_WRITE)) /* Check access mode */
annieluo2	0:d6c9b09b4042	2708	LEAVE_FF(fp->fs, FR_DENIED);
annieluo2	0:d6c9b09b4042	2709	if (fp->fptr + btw < fp->fptr) btw = 0; /* File size cannot reach 4GB */
annieluo2	0:d6c9b09b4042	2710
annieluo2	0:d6c9b09b4042	2711	for ( ; btw; /* Repeat until all data written */
annieluo2	0:d6c9b09b4042	2712	wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
annieluo2	0:d6c9b09b4042	2713	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
annieluo2	0:d6c9b09b4042	2714	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
annieluo2	0:d6c9b09b4042	2715	if (!csect) { /* On the cluster boundary? */
annieluo2	0:d6c9b09b4042	2716	if (fp->fptr == 0) { /* On the top of the file? */
annieluo2	0:d6c9b09b4042	2717	clst = fp->sclust; /* Follow from the origin */
annieluo2	0:d6c9b09b4042	2718	if (clst == 0) /* When no cluster is allocated, */
annieluo2	0:d6c9b09b4042	2719	clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
annieluo2	0:d6c9b09b4042	2720	} else { /* Middle or end of the file */
annieluo2	0:d6c9b09b4042	2721	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	2722	if (fp->cltbl)
annieluo2	0:d6c9b09b4042	2723	clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
annieluo2	0:d6c9b09b4042	2724	else
annieluo2	0:d6c9b09b4042	2725	#endif
annieluo2	0:d6c9b09b4042	2726	clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
annieluo2	0:d6c9b09b4042	2727	}
annieluo2	0:d6c9b09b4042	2728	if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
annieluo2	0:d6c9b09b4042	2729	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	2730	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2731	fp->clust = clst; /* Update current cluster */
annieluo2	0:d6c9b09b4042	2732	if (fp->sclust == 0) fp->sclust = clst; /* Set start cluster if the first write */
annieluo2	0:d6c9b09b4042	2733
annieluo2	0:d6c9b09b4042	2734	#if FLUSH_ON_NEW_CLUSTER
annieluo2	0:d6c9b09b4042	2735	// We do not need to flush for the first cluster
annieluo2	0:d6c9b09b4042	2736	if (fp->fptr != 0) {
annieluo2	0:d6c9b09b4042	2737	need_sync = true;
annieluo2	0:d6c9b09b4042	2738	}
annieluo2	0:d6c9b09b4042	2739	#endif
annieluo2	0:d6c9b09b4042	2740	}
annieluo2	0:d6c9b09b4042	2741	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2742	if (fp->fs->winsect == fp->dsect && sync_window(fp->fs)) /* Write-back sector cache */
annieluo2	0:d6c9b09b4042	2743	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2744	#else
annieluo2	0:d6c9b09b4042	2745	if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
annieluo2	0:d6c9b09b4042	2746	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	2747	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2748	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	2749	}
annieluo2	0:d6c9b09b4042	2750	#endif
annieluo2	0:d6c9b09b4042	2751	sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
annieluo2	0:d6c9b09b4042	2752	if (!sect) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	2753	sect += csect;
annieluo2	0:d6c9b09b4042	2754	cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
annieluo2	0:d6c9b09b4042	2755	if (cc) { /* Write maximum contiguous sectors directly */
annieluo2	0:d6c9b09b4042	2756	if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
annieluo2	0:d6c9b09b4042	2757	cc = fp->fs->csize - csect;
annieluo2	0:d6c9b09b4042	2758	if (disk_write(fp->fs->drv, wbuff, sect, cc) != RES_OK)
annieluo2	0:d6c9b09b4042	2759	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2760	#if _FS_MINIMIZE <= 2
annieluo2	0:d6c9b09b4042	2761	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2762	if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
annieluo2	0:d6c9b09b4042	2763	mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
annieluo2	0:d6c9b09b4042	2764	fp->fs->wflag = 0;
annieluo2	0:d6c9b09b4042	2765	}
annieluo2	0:d6c9b09b4042	2766	#else
annieluo2	0:d6c9b09b4042	2767	if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
annieluo2	0:d6c9b09b4042	2768	mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
annieluo2	0:d6c9b09b4042	2769	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	2770	}
annieluo2	0:d6c9b09b4042	2771	#endif
annieluo2	0:d6c9b09b4042	2772	#endif
annieluo2	0:d6c9b09b4042	2773	wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
annieluo2	0:d6c9b09b4042	2774	#if FLUSH_ON_NEW_SECTOR
annieluo2	0:d6c9b09b4042	2775	need_sync = true;
annieluo2	0:d6c9b09b4042	2776	#endif
annieluo2	0:d6c9b09b4042	2777	continue;
annieluo2	0:d6c9b09b4042	2778	}
annieluo2	0:d6c9b09b4042	2779	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2780	if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
annieluo2	0:d6c9b09b4042	2781	if (sync_window(fp->fs)) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2782	fp->fs->winsect = sect;
annieluo2	0:d6c9b09b4042	2783	}
annieluo2	0:d6c9b09b4042	2784	#else
annieluo2	0:d6c9b09b4042	2785	if (fp->dsect != sect) { /* Fill sector cache with file data */
annieluo2	0:d6c9b09b4042	2786	if (fp->fptr < fp->fsize &&
annieluo2	0:d6c9b09b4042	2787	disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	2788	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2789	}
annieluo2	0:d6c9b09b4042	2790	#endif
annieluo2	0:d6c9b09b4042	2791	fp->dsect = sect;
annieluo2	0:d6c9b09b4042	2792	}
annieluo2	0:d6c9b09b4042	2793	wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
annieluo2	0:d6c9b09b4042	2794	if (wcnt > btw) wcnt = btw;
annieluo2	0:d6c9b09b4042	2795	#if _FS_TINY
annieluo2	0:d6c9b09b4042	2796	if (move_window(fp->fs, fp->dsect) != FR_OK) /* Move sector window */
annieluo2	0:d6c9b09b4042	2797	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2798	mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
annieluo2	0:d6c9b09b4042	2799	fp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	2800	#else
annieluo2	0:d6c9b09b4042	2801	mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
annieluo2	0:d6c9b09b4042	2802	fp->flag \|= FA__DIRTY;
annieluo2	0:d6c9b09b4042	2803	#endif
annieluo2	0:d6c9b09b4042	2804	}
annieluo2	0:d6c9b09b4042	2805
annieluo2	0:d6c9b09b4042	2806	if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
annieluo2	0:d6c9b09b4042	2807	fp->flag \|= FA__WRITTEN; /* Set file change flag */
annieluo2	0:d6c9b09b4042	2808
annieluo2	0:d6c9b09b4042	2809	if (need_sync) {
annieluo2	0:d6c9b09b4042	2810	f_sync (fp);
annieluo2	0:d6c9b09b4042	2811	}
annieluo2	0:d6c9b09b4042	2812
annieluo2	0:d6c9b09b4042	2813	LEAVE_FF(fp->fs, FR_OK);
annieluo2	0:d6c9b09b4042	2814	}
annieluo2	0:d6c9b09b4042	2815
annieluo2	0:d6c9b09b4042	2816
annieluo2	0:d6c9b09b4042	2817
annieluo2	0:d6c9b09b4042	2818
annieluo2	0:d6c9b09b4042	2819	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2820	/* Synchronize the File */
annieluo2	0:d6c9b09b4042	2821	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2822
annieluo2	0:d6c9b09b4042	2823	FRESULT f_sync (
annieluo2	0:d6c9b09b4042	2824	FIL* fp /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	2825	)
annieluo2	0:d6c9b09b4042	2826	{
annieluo2	0:d6c9b09b4042	2827	FRESULT res;
annieluo2	0:d6c9b09b4042	2828	DWORD tm;
annieluo2	0:d6c9b09b4042	2829	BYTE *dir;
annieluo2	0:d6c9b09b4042	2830
annieluo2	0:d6c9b09b4042	2831
annieluo2	0:d6c9b09b4042	2832	res = validate(fp); /* Check validity of the object */
annieluo2	0:d6c9b09b4042	2833	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2834	if (fp->flag & FA__WRITTEN) { /* Is there any change to the file? */
annieluo2	0:d6c9b09b4042	2835	#if !_FS_TINY
annieluo2	0:d6c9b09b4042	2836	if (fp->flag & FA__DIRTY) { /* Write-back cached data if needed */
annieluo2	0:d6c9b09b4042	2837	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	2838	LEAVE_FF(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	2839	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	2840	}
annieluo2	0:d6c9b09b4042	2841	#endif
annieluo2	0:d6c9b09b4042	2842	/* Update the directory entry */
annieluo2	0:d6c9b09b4042	2843	res = move_window(fp->fs, fp->dir_sect);
annieluo2	0:d6c9b09b4042	2844	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2845	dir = fp->dir_ptr;
annieluo2	0:d6c9b09b4042	2846	dir[DIR_Attr] \|= AM_ARC; /* Set archive bit */
annieluo2	0:d6c9b09b4042	2847	ST_DWORD(dir + DIR_FileSize, fp->fsize); /* Update file size */
annieluo2	0:d6c9b09b4042	2848	st_clust(dir, fp->sclust); /* Update start cluster */
annieluo2	0:d6c9b09b4042	2849	tm = GET_FATTIME(); /* Update modified time */
annieluo2	0:d6c9b09b4042	2850	ST_DWORD(dir + DIR_WrtTime, tm);
annieluo2	0:d6c9b09b4042	2851	ST_WORD(dir + DIR_LstAccDate, 0);
annieluo2	0:d6c9b09b4042	2852	fp->flag &= ~FA__WRITTEN;
annieluo2	0:d6c9b09b4042	2853	fp->fs->wflag = 1;
annieluo2	0:d6c9b09b4042	2854	res = sync_fs(fp->fs);
annieluo2	0:d6c9b09b4042	2855	}
annieluo2	0:d6c9b09b4042	2856	}
annieluo2	0:d6c9b09b4042	2857	}
annieluo2	0:d6c9b09b4042	2858
annieluo2	0:d6c9b09b4042	2859	LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	2860	}
annieluo2	0:d6c9b09b4042	2861
annieluo2	0:d6c9b09b4042	2862	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	2863
annieluo2	0:d6c9b09b4042	2864
annieluo2	0:d6c9b09b4042	2865
annieluo2	0:d6c9b09b4042	2866
annieluo2	0:d6c9b09b4042	2867	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2868	/* Close File */
annieluo2	0:d6c9b09b4042	2869	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2870
annieluo2	0:d6c9b09b4042	2871	FRESULT f_close (
annieluo2	0:d6c9b09b4042	2872	FIL fp / Pointer to the file object to be closed */
annieluo2	0:d6c9b09b4042	2873	)
annieluo2	0:d6c9b09b4042	2874	{
annieluo2	0:d6c9b09b4042	2875	FRESULT res;
annieluo2	0:d6c9b09b4042	2876
annieluo2	0:d6c9b09b4042	2877
annieluo2	0:d6c9b09b4042	2878	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	2879	res = f_sync(fp); /* Flush cached data */
annieluo2	0:d6c9b09b4042	2880	if (res == FR_OK)
annieluo2	0:d6c9b09b4042	2881	#endif
annieluo2	0:d6c9b09b4042	2882	{
annieluo2	0:d6c9b09b4042	2883	res = validate(fp); /* Lock volume */
annieluo2	0:d6c9b09b4042	2884	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2885	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	2886	FATFS *fs = fp->fs;
annieluo2	0:d6c9b09b4042	2887	#endif
annieluo2	0:d6c9b09b4042	2888	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	2889	res = dec_lock(fp->lockid); /* Decrement file open counter */
annieluo2	0:d6c9b09b4042	2890	if (res == FR_OK)
annieluo2	0:d6c9b09b4042	2891	#endif
annieluo2	0:d6c9b09b4042	2892	fp->fs = 0; /* Invalidate file object */
annieluo2	0:d6c9b09b4042	2893	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	2894	unlock_fs(fs, FR_OK); /* Unlock volume */
annieluo2	0:d6c9b09b4042	2895	#endif
annieluo2	0:d6c9b09b4042	2896	}
annieluo2	0:d6c9b09b4042	2897	}
annieluo2	0:d6c9b09b4042	2898	return res;
annieluo2	0:d6c9b09b4042	2899	}
annieluo2	0:d6c9b09b4042	2900
annieluo2	0:d6c9b09b4042	2901
annieluo2	0:d6c9b09b4042	2902
annieluo2	0:d6c9b09b4042	2903
annieluo2	0:d6c9b09b4042	2904	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2905	/* Change Current Directory or Current Drive, Get Current Directory */
annieluo2	0:d6c9b09b4042	2906	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	2907
annieluo2	0:d6c9b09b4042	2908	#if _FS_RPATH >= 1
annieluo2	0:d6c9b09b4042	2909	#if _VOLUMES >= 2
annieluo2	0:d6c9b09b4042	2910	FRESULT f_chdrive (
annieluo2	0:d6c9b09b4042	2911	const TCHAR* path /* Drive number */
annieluo2	0:d6c9b09b4042	2912	)
annieluo2	0:d6c9b09b4042	2913	{
annieluo2	0:d6c9b09b4042	2914	int vol;
annieluo2	0:d6c9b09b4042	2915
annieluo2	0:d6c9b09b4042	2916
annieluo2	0:d6c9b09b4042	2917	vol = get_ldnumber(&path);
annieluo2	0:d6c9b09b4042	2918	if (vol < 0) return FR_INVALID_DRIVE;
annieluo2	0:d6c9b09b4042	2919
annieluo2	0:d6c9b09b4042	2920	CurrVol = (BYTE)vol;
annieluo2	0:d6c9b09b4042	2921
annieluo2	0:d6c9b09b4042	2922	return FR_OK;
annieluo2	0:d6c9b09b4042	2923	}
annieluo2	0:d6c9b09b4042	2924	#endif
annieluo2	0:d6c9b09b4042	2925
annieluo2	0:d6c9b09b4042	2926
annieluo2	0:d6c9b09b4042	2927	FRESULT f_chdir (
annieluo2	0:d6c9b09b4042	2928	const TCHAR* path /* Pointer to the directory path */
annieluo2	0:d6c9b09b4042	2929	)
annieluo2	0:d6c9b09b4042	2930	{
annieluo2	0:d6c9b09b4042	2931	FRESULT res;
annieluo2	0:d6c9b09b4042	2932	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	2933	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	2934
annieluo2	0:d6c9b09b4042	2935
annieluo2	0:d6c9b09b4042	2936	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	2937	res = find_volume(&dj.fs, &path, 0);
annieluo2	0:d6c9b09b4042	2938	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2939	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	2940	res = follow_path(&dj, path); /* Follow the path */
annieluo2	0:d6c9b09b4042	2941	FREE_BUF();
annieluo2	0:d6c9b09b4042	2942	if (res == FR_OK) { /* Follow completed */
annieluo2	0:d6c9b09b4042	2943	if (!dj.dir) {
annieluo2	0:d6c9b09b4042	2944	dj.fs->cdir = dj.sclust; /* Start directory itself */
annieluo2	0:d6c9b09b4042	2945	} else {
annieluo2	0:d6c9b09b4042	2946	if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
annieluo2	0:d6c9b09b4042	2947	dj.fs->cdir = ld_clust(dj.fs, dj.dir);
annieluo2	0:d6c9b09b4042	2948	else
annieluo2	0:d6c9b09b4042	2949	res = FR_NO_PATH; /* Reached but a file */
annieluo2	0:d6c9b09b4042	2950	}
annieluo2	0:d6c9b09b4042	2951	}
annieluo2	0:d6c9b09b4042	2952	if (res == FR_NO_FILE) res = FR_NO_PATH;
annieluo2	0:d6c9b09b4042	2953	}
annieluo2	0:d6c9b09b4042	2954
annieluo2	0:d6c9b09b4042	2955	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	2956	}
annieluo2	0:d6c9b09b4042	2957
annieluo2	0:d6c9b09b4042	2958
annieluo2	0:d6c9b09b4042	2959	#if _FS_RPATH >= 2
annieluo2	0:d6c9b09b4042	2960	FRESULT f_getcwd (
annieluo2	0:d6c9b09b4042	2961	TCHAR* buff, /* Pointer to the directory path */
annieluo2	0:d6c9b09b4042	2962	UINT len /* Size of path */
annieluo2	0:d6c9b09b4042	2963	)
annieluo2	0:d6c9b09b4042	2964	{
annieluo2	0:d6c9b09b4042	2965	FRESULT res;
annieluo2	0:d6c9b09b4042	2966	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	2967	UINT i, n;
annieluo2	0:d6c9b09b4042	2968	DWORD ccl;
annieluo2	0:d6c9b09b4042	2969	TCHAR *tp;
annieluo2	0:d6c9b09b4042	2970	FILINFO fno;
annieluo2	0:d6c9b09b4042	2971	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	2972
annieluo2	0:d6c9b09b4042	2973
annieluo2	0:d6c9b09b4042	2974	*buff = 0;
annieluo2	0:d6c9b09b4042	2975	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	2976	res = find_volume(&dj.fs, (const TCHAR*)&buff, 0); / Get current volume */
annieluo2	0:d6c9b09b4042	2977	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	2978	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	2979	i = len; /* Bottom of buffer (directory stack base) */
annieluo2	0:d6c9b09b4042	2980	dj.sclust = dj.fs->cdir; /* Start to follow upper directory from current directory */
annieluo2	0:d6c9b09b4042	2981	while ((ccl = dj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
annieluo2	0:d6c9b09b4042	2982	res = dir_sdi(&dj, 1); /* Get parent directory */
annieluo2	0:d6c9b09b4042	2983	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2984	res = dir_read(&dj, 0);
annieluo2	0:d6c9b09b4042	2985	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2986	dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent directory */
annieluo2	0:d6c9b09b4042	2987	res = dir_sdi(&dj, 0);
annieluo2	0:d6c9b09b4042	2988	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2989	do { /* Find the entry links to the child directory */
annieluo2	0:d6c9b09b4042	2990	res = dir_read(&dj, 0);
annieluo2	0:d6c9b09b4042	2991	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2992	if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
annieluo2	0:d6c9b09b4042	2993	res = dir_next(&dj, 0);
annieluo2	0:d6c9b09b4042	2994	} while (res == FR_OK);
annieluo2	0:d6c9b09b4042	2995	if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
annieluo2	0:d6c9b09b4042	2996	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	2997	#if _USE_LFN
annieluo2	0:d6c9b09b4042	2998	fno.lfname = buff;
annieluo2	0:d6c9b09b4042	2999	fno.lfsize = i;
annieluo2	0:d6c9b09b4042	3000	#endif
annieluo2	0:d6c9b09b4042	3001	get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
annieluo2	0:d6c9b09b4042	3002	tp = fno.fname;
annieluo2	0:d6c9b09b4042	3003	#if _USE_LFN
annieluo2	0:d6c9b09b4042	3004	if (*buff) tp = buff;
annieluo2	0:d6c9b09b4042	3005	#endif
annieluo2	0:d6c9b09b4042	3006	for (n = 0; tp[n]; n++) ;
annieluo2	0:d6c9b09b4042	3007	if (i < n + 3) {
annieluo2	0:d6c9b09b4042	3008	res = FR_NOT_ENOUGH_CORE; break;
annieluo2	0:d6c9b09b4042	3009	}
annieluo2	0:d6c9b09b4042	3010	while (n) buff[--i] = tp[--n];
annieluo2	0:d6c9b09b4042	3011	buff[--i] = '/';
annieluo2	0:d6c9b09b4042	3012	}
annieluo2	0:d6c9b09b4042	3013	tp = buff;
annieluo2	0:d6c9b09b4042	3014	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3015	#if _VOLUMES >= 2
annieluo2	0:d6c9b09b4042	3016	tp++ = '0' + CurrVol; / Put drive number */
annieluo2	0:d6c9b09b4042	3017	*tp++ = ':';
annieluo2	0:d6c9b09b4042	3018	#endif
annieluo2	0:d6c9b09b4042	3019	if (i == len) { /* Root-directory */
annieluo2	0:d6c9b09b4042	3020	*tp++ = '/';
annieluo2	0:d6c9b09b4042	3021	} else { /* Sub-directroy */
annieluo2	0:d6c9b09b4042	3022	do /* Add stacked path str */
annieluo2	0:d6c9b09b4042	3023	*tp++ = buff[i++];
annieluo2	0:d6c9b09b4042	3024	while (i < len);
annieluo2	0:d6c9b09b4042	3025	}
annieluo2	0:d6c9b09b4042	3026	}
annieluo2	0:d6c9b09b4042	3027	*tp = 0;
annieluo2	0:d6c9b09b4042	3028	FREE_BUF();
annieluo2	0:d6c9b09b4042	3029	}
annieluo2	0:d6c9b09b4042	3030
annieluo2	0:d6c9b09b4042	3031	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3032	}
annieluo2	0:d6c9b09b4042	3033	#endif /* _FS_RPATH >= 2 */
annieluo2	0:d6c9b09b4042	3034	#endif /* _FS_RPATH >= 1 */
annieluo2	0:d6c9b09b4042	3035
annieluo2	0:d6c9b09b4042	3036
annieluo2	0:d6c9b09b4042	3037
annieluo2	0:d6c9b09b4042	3038	#if _FS_MINIMIZE <= 2
annieluo2	0:d6c9b09b4042	3039	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3040	/* Seek File R/W Pointer */
annieluo2	0:d6c9b09b4042	3041	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3042
annieluo2	0:d6c9b09b4042	3043	FRESULT f_lseek (
annieluo2	0:d6c9b09b4042	3044	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	3045	DWORD ofs /* File pointer from top of file */
annieluo2	0:d6c9b09b4042	3046	)
annieluo2	0:d6c9b09b4042	3047	{
annieluo2	0:d6c9b09b4042	3048	FRESULT res;
annieluo2	0:d6c9b09b4042	3049	DWORD clst, bcs, nsect, ifptr;
annieluo2	0:d6c9b09b4042	3050	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	3051	DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
annieluo2	0:d6c9b09b4042	3052	#endif
annieluo2	0:d6c9b09b4042	3053
annieluo2	0:d6c9b09b4042	3054
annieluo2	0:d6c9b09b4042	3055	res = validate(fp); /* Check validity of the object */
annieluo2	0:d6c9b09b4042	3056	if (res != FR_OK) LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	3057	if (fp->err) /* Check error */
annieluo2	0:d6c9b09b4042	3058	LEAVE_FF(fp->fs, (FRESULT)fp->err);
annieluo2	0:d6c9b09b4042	3059
annieluo2	0:d6c9b09b4042	3060	#if _USE_FASTSEEK
annieluo2	0:d6c9b09b4042	3061	if (fp->cltbl) { /* Fast seek */
annieluo2	0:d6c9b09b4042	3062	if (ofs == CREATE_LINKMAP) { /* Create CLMT */
annieluo2	0:d6c9b09b4042	3063	tbl = fp->cltbl;
annieluo2	0:d6c9b09b4042	3064	tlen = tbl++; ulen = 2; / Given table size and required table size */
annieluo2	0:d6c9b09b4042	3065	cl = fp->sclust; /* Top of the chain */
annieluo2	0:d6c9b09b4042	3066	if (cl) {
annieluo2	0:d6c9b09b4042	3067	do {
annieluo2	0:d6c9b09b4042	3068	/* Get a fragment */
annieluo2	0:d6c9b09b4042	3069	tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
annieluo2	0:d6c9b09b4042	3070	do {
annieluo2	0:d6c9b09b4042	3071	pcl = cl; ncl++;
annieluo2	0:d6c9b09b4042	3072	cl = get_fat(fp->fs, cl);
annieluo2	0:d6c9b09b4042	3073	if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	3074	if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3075	} while (cl == pcl + 1);
annieluo2	0:d6c9b09b4042	3076	if (ulen <= tlen) { /* Store the length and top of the fragment */
annieluo2	0:d6c9b09b4042	3077	tbl++ = ncl; tbl++ = tcl;
annieluo2	0:d6c9b09b4042	3078	}
annieluo2	0:d6c9b09b4042	3079	} while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
annieluo2	0:d6c9b09b4042	3080	}
annieluo2	0:d6c9b09b4042	3081	fp->cltbl = ulen; / Number of items used */
annieluo2	0:d6c9b09b4042	3082	if (ulen <= tlen)
annieluo2	0:d6c9b09b4042	3083	tbl = 0; / Terminate table */
annieluo2	0:d6c9b09b4042	3084	else
annieluo2	0:d6c9b09b4042	3085	res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
annieluo2	0:d6c9b09b4042	3086
annieluo2	0:d6c9b09b4042	3087	} else { /* Fast seek */
annieluo2	0:d6c9b09b4042	3088	if (ofs > fp->fsize) /* Clip offset at the file size */
annieluo2	0:d6c9b09b4042	3089	ofs = fp->fsize;
annieluo2	0:d6c9b09b4042	3090	fp->fptr = ofs; /* Set file pointer */
annieluo2	0:d6c9b09b4042	3091	if (ofs) {
annieluo2	0:d6c9b09b4042	3092	fp->clust = clmt_clust(fp, ofs - 1);
annieluo2	0:d6c9b09b4042	3093	dsc = clust2sect(fp->fs, fp->clust);
annieluo2	0:d6c9b09b4042	3094	if (!dsc) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	3095	dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
annieluo2	0:d6c9b09b4042	3096	if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
annieluo2	0:d6c9b09b4042	3097	#if !_FS_TINY
annieluo2	0:d6c9b09b4042	3098	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3099	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
annieluo2	0:d6c9b09b4042	3100	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	3101	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3102	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	3103	}
annieluo2	0:d6c9b09b4042	3104	#endif
annieluo2	0:d6c9b09b4042	3105	if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
annieluo2	0:d6c9b09b4042	3106	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3107	#endif
annieluo2	0:d6c9b09b4042	3108	fp->dsect = dsc;
annieluo2	0:d6c9b09b4042	3109	}
annieluo2	0:d6c9b09b4042	3110	}
annieluo2	0:d6c9b09b4042	3111	}
annieluo2	0:d6c9b09b4042	3112	} else
annieluo2	0:d6c9b09b4042	3113	#endif
annieluo2	0:d6c9b09b4042	3114
annieluo2	0:d6c9b09b4042	3115	/* Normal Seek */
annieluo2	0:d6c9b09b4042	3116	{
annieluo2	0:d6c9b09b4042	3117	if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
annieluo2	0:d6c9b09b4042	3118	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3119	&& !(fp->flag & FA_WRITE)
annieluo2	0:d6c9b09b4042	3120	#endif
annieluo2	0:d6c9b09b4042	3121	) ofs = fp->fsize;
annieluo2	0:d6c9b09b4042	3122
annieluo2	0:d6c9b09b4042	3123	ifptr = fp->fptr;
annieluo2	0:d6c9b09b4042	3124	fp->fptr = nsect = 0;
annieluo2	0:d6c9b09b4042	3125	if (ofs) {
annieluo2	0:d6c9b09b4042	3126	bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
annieluo2	0:d6c9b09b4042	3127	if (ifptr > 0 &&
annieluo2	0:d6c9b09b4042	3128	(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
annieluo2	0:d6c9b09b4042	3129	fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
annieluo2	0:d6c9b09b4042	3130	ofs -= fp->fptr;
annieluo2	0:d6c9b09b4042	3131	clst = fp->clust;
annieluo2	0:d6c9b09b4042	3132	} else { /* When seek to back cluster, */
annieluo2	0:d6c9b09b4042	3133	clst = fp->sclust; /* start from the first cluster */
annieluo2	0:d6c9b09b4042	3134	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3135	if (clst == 0) { /* If no cluster chain, create a new chain */
annieluo2	0:d6c9b09b4042	3136	clst = create_chain(fp->fs, 0);
annieluo2	0:d6c9b09b4042	3137	if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	3138	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3139	fp->sclust = clst;
annieluo2	0:d6c9b09b4042	3140	}
annieluo2	0:d6c9b09b4042	3141	#endif
annieluo2	0:d6c9b09b4042	3142	fp->clust = clst;
annieluo2	0:d6c9b09b4042	3143	}
annieluo2	0:d6c9b09b4042	3144	if (clst != 0) {
annieluo2	0:d6c9b09b4042	3145	while (ofs > bcs) { /* Cluster following loop */
annieluo2	0:d6c9b09b4042	3146	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3147	if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
annieluo2	0:d6c9b09b4042	3148	clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
annieluo2	0:d6c9b09b4042	3149	if (clst == 0) { /* When disk gets full, clip file size */
annieluo2	0:d6c9b09b4042	3150	ofs = bcs; break;
annieluo2	0:d6c9b09b4042	3151	}
annieluo2	0:d6c9b09b4042	3152	} else
annieluo2	0:d6c9b09b4042	3153	#endif
annieluo2	0:d6c9b09b4042	3154	clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
annieluo2	0:d6c9b09b4042	3155	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3156	if (clst <= 1 \|\| clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	3157	fp->clust = clst;
annieluo2	0:d6c9b09b4042	3158	fp->fptr += bcs;
annieluo2	0:d6c9b09b4042	3159	ofs -= bcs;
annieluo2	0:d6c9b09b4042	3160	}
annieluo2	0:d6c9b09b4042	3161	fp->fptr += ofs;
annieluo2	0:d6c9b09b4042	3162	if (ofs % SS(fp->fs)) {
annieluo2	0:d6c9b09b4042	3163	nsect = clust2sect(fp->fs, clst); /* Current sector */
annieluo2	0:d6c9b09b4042	3164	if (!nsect) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	3165	nsect += ofs / SS(fp->fs);
annieluo2	0:d6c9b09b4042	3166	}
annieluo2	0:d6c9b09b4042	3167	}
annieluo2	0:d6c9b09b4042	3168	}
annieluo2	0:d6c9b09b4042	3169	if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
annieluo2	0:d6c9b09b4042	3170	#if !_FS_TINY
annieluo2	0:d6c9b09b4042	3171	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3172	if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
annieluo2	0:d6c9b09b4042	3173	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	3174	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3175	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	3176	}
annieluo2	0:d6c9b09b4042	3177	#endif
annieluo2	0:d6c9b09b4042	3178	if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
annieluo2	0:d6c9b09b4042	3179	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	3180	#endif
annieluo2	0:d6c9b09b4042	3181	fp->dsect = nsect;
annieluo2	0:d6c9b09b4042	3182	}
annieluo2	0:d6c9b09b4042	3183	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3184	if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
annieluo2	0:d6c9b09b4042	3185	fp->fsize = fp->fptr;
annieluo2	0:d6c9b09b4042	3186	fp->flag \|= FA__WRITTEN;
annieluo2	0:d6c9b09b4042	3187	}
annieluo2	0:d6c9b09b4042	3188	#endif
annieluo2	0:d6c9b09b4042	3189	}
annieluo2	0:d6c9b09b4042	3190
annieluo2	0:d6c9b09b4042	3191	LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	3192	}
annieluo2	0:d6c9b09b4042	3193
annieluo2	0:d6c9b09b4042	3194
annieluo2	0:d6c9b09b4042	3195
annieluo2	0:d6c9b09b4042	3196	#if _FS_MINIMIZE <= 1
annieluo2	0:d6c9b09b4042	3197	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3198	/* Create a Directory Object */
annieluo2	0:d6c9b09b4042	3199	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3200
annieluo2	0:d6c9b09b4042	3201	FRESULT f_opendir (
annieluo2	0:d6c9b09b4042	3202	FATFS_DIR* dp, /* Pointer to directory object to create */
annieluo2	0:d6c9b09b4042	3203	const TCHAR* path /* Pointer to the directory path */
annieluo2	0:d6c9b09b4042	3204	)
annieluo2	0:d6c9b09b4042	3205	{
annieluo2	0:d6c9b09b4042	3206	FRESULT res;
annieluo2	0:d6c9b09b4042	3207	FATFS* fs;
annieluo2	0:d6c9b09b4042	3208	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3209
annieluo2	0:d6c9b09b4042	3210
annieluo2	0:d6c9b09b4042	3211	if (!dp) return FR_INVALID_OBJECT;
annieluo2	0:d6c9b09b4042	3212
annieluo2	0:d6c9b09b4042	3213	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3214	res = find_volume(&fs, &path, 0);
annieluo2	0:d6c9b09b4042	3215	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3216	dp->fs = fs;
annieluo2	0:d6c9b09b4042	3217	INIT_BUF(*dp);
annieluo2	0:d6c9b09b4042	3218	res = follow_path(dp, path); /* Follow the path to the directory */
annieluo2	0:d6c9b09b4042	3219	FREE_BUF();
annieluo2	0:d6c9b09b4042	3220	if (res == FR_OK) { /* Follow completed */
annieluo2	0:d6c9b09b4042	3221	if (dp->dir) { /* It is not the origin directory itself */
annieluo2	0:d6c9b09b4042	3222	if (dp->dir[DIR_Attr] & AM_DIR) /* The object is a sub directory */
annieluo2	0:d6c9b09b4042	3223	dp->sclust = ld_clust(fs, dp->dir);
annieluo2	0:d6c9b09b4042	3224	else /* The object is a file */
annieluo2	0:d6c9b09b4042	3225	res = FR_NO_PATH;
annieluo2	0:d6c9b09b4042	3226	}
annieluo2	0:d6c9b09b4042	3227	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3228	dp->id = fs->id;
annieluo2	0:d6c9b09b4042	3229	res = dir_sdi(dp, 0); /* Rewind directory */
annieluo2	0:d6c9b09b4042	3230	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	3231	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3232	if (dp->sclust) {
annieluo2	0:d6c9b09b4042	3233	dp->lockid = inc_lock(dp, 0); /* Lock the sub directory */
annieluo2	0:d6c9b09b4042	3234	if (!dp->lockid)
annieluo2	0:d6c9b09b4042	3235	res = FR_TOO_MANY_OPEN_FILES;
annieluo2	0:d6c9b09b4042	3236	} else {
annieluo2	0:d6c9b09b4042	3237	dp->lockid = 0; /* Root directory need not to be locked */
annieluo2	0:d6c9b09b4042	3238	}
annieluo2	0:d6c9b09b4042	3239	}
annieluo2	0:d6c9b09b4042	3240	#endif
annieluo2	0:d6c9b09b4042	3241	}
annieluo2	0:d6c9b09b4042	3242	}
annieluo2	0:d6c9b09b4042	3243	if (res == FR_NO_FILE) res = FR_NO_PATH;
annieluo2	0:d6c9b09b4042	3244	}
annieluo2	0:d6c9b09b4042	3245	if (res != FR_OK) dp->fs = 0; /* Invalidate the directory object if function faild */
annieluo2	0:d6c9b09b4042	3246
annieluo2	0:d6c9b09b4042	3247	LEAVE_FF(fs, res);
annieluo2	0:d6c9b09b4042	3248	}
annieluo2	0:d6c9b09b4042	3249
annieluo2	0:d6c9b09b4042	3250
annieluo2	0:d6c9b09b4042	3251
annieluo2	0:d6c9b09b4042	3252
annieluo2	0:d6c9b09b4042	3253	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3254	/* Close Directory */
annieluo2	0:d6c9b09b4042	3255	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3256
annieluo2	0:d6c9b09b4042	3257	FRESULT f_closedir (
annieluo2	0:d6c9b09b4042	3258	FATFS_DIR dp / Pointer to the directory object to be closed */
annieluo2	0:d6c9b09b4042	3259	)
annieluo2	0:d6c9b09b4042	3260	{
annieluo2	0:d6c9b09b4042	3261	FRESULT res;
annieluo2	0:d6c9b09b4042	3262
annieluo2	0:d6c9b09b4042	3263
annieluo2	0:d6c9b09b4042	3264	res = validate(dp);
annieluo2	0:d6c9b09b4042	3265	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3266	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	3267	FATFS *fs = dp->fs;
annieluo2	0:d6c9b09b4042	3268	#endif
annieluo2	0:d6c9b09b4042	3269	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	3270	if (dp->lockid) /* Decrement sub-directory open counter */
annieluo2	0:d6c9b09b4042	3271	res = dec_lock(dp->lockid);
annieluo2	0:d6c9b09b4042	3272	if (res == FR_OK)
annieluo2	0:d6c9b09b4042	3273	#endif
annieluo2	0:d6c9b09b4042	3274	dp->fs = 0; /* Invalidate directory object */
annieluo2	0:d6c9b09b4042	3275	#if _FS_REENTRANT
annieluo2	0:d6c9b09b4042	3276	unlock_fs(fs, FR_OK); /* Unlock volume */
annieluo2	0:d6c9b09b4042	3277	#endif
annieluo2	0:d6c9b09b4042	3278	}
annieluo2	0:d6c9b09b4042	3279	return res;
annieluo2	0:d6c9b09b4042	3280	}
annieluo2	0:d6c9b09b4042	3281
annieluo2	0:d6c9b09b4042	3282
annieluo2	0:d6c9b09b4042	3283
annieluo2	0:d6c9b09b4042	3284
annieluo2	0:d6c9b09b4042	3285	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3286	/* Read Directory Entries in Sequence */
annieluo2	0:d6c9b09b4042	3287	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3288
annieluo2	0:d6c9b09b4042	3289	FRESULT f_readdir (
annieluo2	0:d6c9b09b4042	3290	FATFS_DIR* dp, /* Pointer to the open directory object */
annieluo2	0:d6c9b09b4042	3291	FILINFO* fno /* Pointer to file information to return */
annieluo2	0:d6c9b09b4042	3292	)
annieluo2	0:d6c9b09b4042	3293	{
annieluo2	0:d6c9b09b4042	3294	FRESULT res;
annieluo2	0:d6c9b09b4042	3295	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3296
annieluo2	0:d6c9b09b4042	3297
annieluo2	0:d6c9b09b4042	3298	res = validate(dp); /* Check validity of the object */
annieluo2	0:d6c9b09b4042	3299	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3300	if (!fno) {
annieluo2	0:d6c9b09b4042	3301	res = dir_sdi(dp, 0); /* Rewind the directory object */
annieluo2	0:d6c9b09b4042	3302	} else {
annieluo2	0:d6c9b09b4042	3303	INIT_BUF(*dp);
annieluo2	0:d6c9b09b4042	3304	res = dir_read(dp, 0); /* Read an item */
annieluo2	0:d6c9b09b4042	3305	if (res == FR_NO_FILE) { /* Reached end of directory */
annieluo2	0:d6c9b09b4042	3306	dp->sect = 0;
annieluo2	0:d6c9b09b4042	3307	res = FR_OK;
annieluo2	0:d6c9b09b4042	3308	}
annieluo2	0:d6c9b09b4042	3309	if (res == FR_OK) { /* A valid entry is found */
annieluo2	0:d6c9b09b4042	3310	get_fileinfo(dp, fno); /* Get the object information */
annieluo2	0:d6c9b09b4042	3311	res = dir_next(dp, 0); /* Increment index for next */
annieluo2	0:d6c9b09b4042	3312	if (res == FR_NO_FILE) {
annieluo2	0:d6c9b09b4042	3313	dp->sect = 0;
annieluo2	0:d6c9b09b4042	3314	res = FR_OK;
annieluo2	0:d6c9b09b4042	3315	}
annieluo2	0:d6c9b09b4042	3316	}
annieluo2	0:d6c9b09b4042	3317	FREE_BUF();
annieluo2	0:d6c9b09b4042	3318	}
annieluo2	0:d6c9b09b4042	3319	}
annieluo2	0:d6c9b09b4042	3320
annieluo2	0:d6c9b09b4042	3321	LEAVE_FF(dp->fs, res);
annieluo2	0:d6c9b09b4042	3322	}
annieluo2	0:d6c9b09b4042	3323
annieluo2	0:d6c9b09b4042	3324
annieluo2	0:d6c9b09b4042	3325
annieluo2	0:d6c9b09b4042	3326	#if _USE_FIND
annieluo2	0:d6c9b09b4042	3327	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3328	/* Find next file */
annieluo2	0:d6c9b09b4042	3329	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3330
annieluo2	0:d6c9b09b4042	3331	FRESULT f_findnext (
annieluo2	0:d6c9b09b4042	3332	FATFS_DIR* dp, /* Pointer to the open directory object */
annieluo2	0:d6c9b09b4042	3333	FILINFO* fno /* Pointer to the file information structure */
annieluo2	0:d6c9b09b4042	3334	)
annieluo2	0:d6c9b09b4042	3335	{
annieluo2	0:d6c9b09b4042	3336	FRESULT res;
annieluo2	0:d6c9b09b4042	3337
annieluo2	0:d6c9b09b4042	3338
annieluo2	0:d6c9b09b4042	3339	for (;;) {
annieluo2	0:d6c9b09b4042	3340	res = f_readdir(dp, fno); /* Get a directory item */
annieluo2	0:d6c9b09b4042	3341	if (res != FR_OK \|\| !fno \|\| !fno->fname[0]) break; /* Terminate if any error or end of directory */
annieluo2	0:d6c9b09b4042	3342	#if _USE_LFN
annieluo2	0:d6c9b09b4042	3343	if (fno->lfname && pattern_matching(dp->pat, fno->lfname, 0, 0)) break; /* Test for LFN if exist */
annieluo2	0:d6c9b09b4042	3344	#endif
annieluo2	0:d6c9b09b4042	3345	if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for SFN */
annieluo2	0:d6c9b09b4042	3346	}
annieluo2	0:d6c9b09b4042	3347	return res;
annieluo2	0:d6c9b09b4042	3348
annieluo2	0:d6c9b09b4042	3349	}
annieluo2	0:d6c9b09b4042	3350
annieluo2	0:d6c9b09b4042	3351
annieluo2	0:d6c9b09b4042	3352
annieluo2	0:d6c9b09b4042	3353	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3354	/* Find first file */
annieluo2	0:d6c9b09b4042	3355	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3356
annieluo2	0:d6c9b09b4042	3357	FRESULT f_findfirst (
annieluo2	0:d6c9b09b4042	3358	FATFS_DIR* dp, /* Pointer to the blank directory object */
annieluo2	0:d6c9b09b4042	3359	FILINFO* fno, /* Pointer to the file information structure */
annieluo2	0:d6c9b09b4042	3360	const TCHAR* path, /* Pointer to the directory to open */
annieluo2	0:d6c9b09b4042	3361	const TCHAR* pattern /* Pointer to the matching pattern */
annieluo2	0:d6c9b09b4042	3362	)
annieluo2	0:d6c9b09b4042	3363	{
annieluo2	0:d6c9b09b4042	3364	FRESULT res;
annieluo2	0:d6c9b09b4042	3365
annieluo2	0:d6c9b09b4042	3366
annieluo2	0:d6c9b09b4042	3367	dp->pat = pattern; /* Save pointer to pattern string */
annieluo2	0:d6c9b09b4042	3368	res = f_opendir(dp, path); /* Open the target directory */
annieluo2	0:d6c9b09b4042	3369	if (res == FR_OK)
annieluo2	0:d6c9b09b4042	3370	res = f_findnext(dp, fno); /* Find the first item */
annieluo2	0:d6c9b09b4042	3371	return res;
annieluo2	0:d6c9b09b4042	3372	}
annieluo2	0:d6c9b09b4042	3373
annieluo2	0:d6c9b09b4042	3374	#endif /* _USE_FIND */
annieluo2	0:d6c9b09b4042	3375
annieluo2	0:d6c9b09b4042	3376
annieluo2	0:d6c9b09b4042	3377
annieluo2	0:d6c9b09b4042	3378	#if _FS_MINIMIZE == 0
annieluo2	0:d6c9b09b4042	3379	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3380	/* Get File Status */
annieluo2	0:d6c9b09b4042	3381	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3382
annieluo2	0:d6c9b09b4042	3383	FRESULT f_stat (
annieluo2	0:d6c9b09b4042	3384	const TCHAR* path, /* Pointer to the file path */
annieluo2	0:d6c9b09b4042	3385	FILINFO* fno /* Pointer to file information to return */
annieluo2	0:d6c9b09b4042	3386	)
annieluo2	0:d6c9b09b4042	3387	{
annieluo2	0:d6c9b09b4042	3388	FRESULT res;
annieluo2	0:d6c9b09b4042	3389	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3390	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3391
annieluo2	0:d6c9b09b4042	3392
annieluo2	0:d6c9b09b4042	3393	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3394	res = find_volume(&dj.fs, &path, 0);
annieluo2	0:d6c9b09b4042	3395	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3396	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	3397	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	3398	if (res == FR_OK) { /* Follow completed */
annieluo2	0:d6c9b09b4042	3399	if (dj.dir) { /* Found an object */
annieluo2	0:d6c9b09b4042	3400	if (fno) get_fileinfo(&dj, fno);
annieluo2	0:d6c9b09b4042	3401	} else { /* It is root directory */
annieluo2	0:d6c9b09b4042	3402	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3403	}
annieluo2	0:d6c9b09b4042	3404	}
annieluo2	0:d6c9b09b4042	3405	FREE_BUF();
annieluo2	0:d6c9b09b4042	3406	}
annieluo2	0:d6c9b09b4042	3407
annieluo2	0:d6c9b09b4042	3408	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3409	}
annieluo2	0:d6c9b09b4042	3410
annieluo2	0:d6c9b09b4042	3411
annieluo2	0:d6c9b09b4042	3412
annieluo2	0:d6c9b09b4042	3413	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3414	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3415	/* Get Number of Free Clusters */
annieluo2	0:d6c9b09b4042	3416	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3417
annieluo2	0:d6c9b09b4042	3418	FRESULT f_getfree (
annieluo2	0:d6c9b09b4042	3419	const TCHAR* path, /* Path name of the logical drive number */
annieluo2	0:d6c9b09b4042	3420	DWORD* nclst, /* Pointer to a variable to return number of free clusters */
annieluo2	0:d6c9b09b4042	3421	FATFS** fatfs /* Pointer to return pointer to corresponding file system object */
annieluo2	0:d6c9b09b4042	3422	)
annieluo2	0:d6c9b09b4042	3423	{
annieluo2	0:d6c9b09b4042	3424	FRESULT res;
annieluo2	0:d6c9b09b4042	3425	FATFS *fs;
annieluo2	0:d6c9b09b4042	3426	DWORD nfree, clst, sect, stat;
annieluo2	0:d6c9b09b4042	3427	UINT i;
annieluo2	0:d6c9b09b4042	3428	BYTE fat, *p;
annieluo2	0:d6c9b09b4042	3429
annieluo2	0:d6c9b09b4042	3430
annieluo2	0:d6c9b09b4042	3431	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3432	res = find_volume(fatfs, &path, 0);
annieluo2	0:d6c9b09b4042	3433	fs = *fatfs;
annieluo2	0:d6c9b09b4042	3434	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3435	/* If free_clust is valid, return it without full cluster scan */
annieluo2	0:d6c9b09b4042	3436	if (fs->free_clust <= fs->n_fatent - 2) {
annieluo2	0:d6c9b09b4042	3437	*nclst = fs->free_clust;
annieluo2	0:d6c9b09b4042	3438	} else {
annieluo2	0:d6c9b09b4042	3439	/* Get number of free clusters */
annieluo2	0:d6c9b09b4042	3440	fat = fs->fs_type;
annieluo2	0:d6c9b09b4042	3441	nfree = 0;
annieluo2	0:d6c9b09b4042	3442	if (fat == FS_FAT12) { /* Sector unalighed entries: Search FAT via regular routine. */
annieluo2	0:d6c9b09b4042	3443	clst = 2;
annieluo2	0:d6c9b09b4042	3444	do {
annieluo2	0:d6c9b09b4042	3445	stat = get_fat(fs, clst);
annieluo2	0:d6c9b09b4042	3446	if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
annieluo2	0:d6c9b09b4042	3447	if (stat == 1) { res = FR_INT_ERR; break; }
annieluo2	0:d6c9b09b4042	3448	if (stat == 0) nfree++;
annieluo2	0:d6c9b09b4042	3449	} while (++clst < fs->n_fatent);
annieluo2	0:d6c9b09b4042	3450	} else { /* Sector alighed entries: Accelerate the FAT search. */
annieluo2	0:d6c9b09b4042	3451	clst = fs->n_fatent; sect = fs->fatbase;
annieluo2	0:d6c9b09b4042	3452	i = 0; p = 0;
annieluo2	0:d6c9b09b4042	3453	do {
annieluo2	0:d6c9b09b4042	3454	if (!i) {
annieluo2	0:d6c9b09b4042	3455	res = move_window(fs, sect++);
annieluo2	0:d6c9b09b4042	3456	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	3457	p = fs->win;
annieluo2	0:d6c9b09b4042	3458	i = SS(fs);
annieluo2	0:d6c9b09b4042	3459	}
annieluo2	0:d6c9b09b4042	3460	if (fat == FS_FAT16) {
annieluo2	0:d6c9b09b4042	3461	if (LD_WORD(p) == 0) nfree++;
annieluo2	0:d6c9b09b4042	3462	p += 2; i -= 2;
annieluo2	0:d6c9b09b4042	3463	} else {
annieluo2	0:d6c9b09b4042	3464	if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) nfree++;
annieluo2	0:d6c9b09b4042	3465	p += 4; i -= 4;
annieluo2	0:d6c9b09b4042	3466	}
annieluo2	0:d6c9b09b4042	3467	} while (--clst);
annieluo2	0:d6c9b09b4042	3468	}
annieluo2	0:d6c9b09b4042	3469	fs->free_clust = nfree; /* free_clust is valid */
annieluo2	0:d6c9b09b4042	3470	fs->fsi_flag \|= 1; /* FSInfo is to be updated */
annieluo2	0:d6c9b09b4042	3471	nclst = nfree; / Return the free clusters */
annieluo2	0:d6c9b09b4042	3472	}
annieluo2	0:d6c9b09b4042	3473	}
annieluo2	0:d6c9b09b4042	3474	LEAVE_FF(fs, res);
annieluo2	0:d6c9b09b4042	3475	}
annieluo2	0:d6c9b09b4042	3476
annieluo2	0:d6c9b09b4042	3477
annieluo2	0:d6c9b09b4042	3478
annieluo2	0:d6c9b09b4042	3479
annieluo2	0:d6c9b09b4042	3480	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3481	/* Truncate File */
annieluo2	0:d6c9b09b4042	3482	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3483
annieluo2	0:d6c9b09b4042	3484	FRESULT f_truncate (
annieluo2	0:d6c9b09b4042	3485	FIL* fp /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	3486	)
annieluo2	0:d6c9b09b4042	3487	{
annieluo2	0:d6c9b09b4042	3488	FRESULT res;
annieluo2	0:d6c9b09b4042	3489	DWORD ncl;
annieluo2	0:d6c9b09b4042	3490
annieluo2	0:d6c9b09b4042	3491
annieluo2	0:d6c9b09b4042	3492	res = validate(fp); /* Check validity of the object */
annieluo2	0:d6c9b09b4042	3493	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3494	if (fp->err) { /* Check error */
annieluo2	0:d6c9b09b4042	3495	res = (FRESULT)fp->err;
annieluo2	0:d6c9b09b4042	3496	} else {
annieluo2	0:d6c9b09b4042	3497	if (!(fp->flag & FA_WRITE)) /* Check access mode */
annieluo2	0:d6c9b09b4042	3498	res = FR_DENIED;
annieluo2	0:d6c9b09b4042	3499	}
annieluo2	0:d6c9b09b4042	3500	}
annieluo2	0:d6c9b09b4042	3501	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3502	if (fp->fsize > fp->fptr) {
annieluo2	0:d6c9b09b4042	3503	fp->fsize = fp->fptr; /* Set file size to current R/W point */
annieluo2	0:d6c9b09b4042	3504	fp->flag \|= FA__WRITTEN;
annieluo2	0:d6c9b09b4042	3505	if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
annieluo2	0:d6c9b09b4042	3506	res = remove_chain(fp->fs, fp->sclust);
annieluo2	0:d6c9b09b4042	3507	fp->sclust = 0;
annieluo2	0:d6c9b09b4042	3508	} else { /* When truncate a part of the file, remove remaining clusters */
annieluo2	0:d6c9b09b4042	3509	ncl = get_fat(fp->fs, fp->clust);
annieluo2	0:d6c9b09b4042	3510	res = FR_OK;
annieluo2	0:d6c9b09b4042	3511	if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	3512	if (ncl == 1) res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	3513	if (res == FR_OK && ncl < fp->fs->n_fatent) {
annieluo2	0:d6c9b09b4042	3514	res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
annieluo2	0:d6c9b09b4042	3515	if (res == FR_OK) res = remove_chain(fp->fs, ncl);
annieluo2	0:d6c9b09b4042	3516	}
annieluo2	0:d6c9b09b4042	3517	}
annieluo2	0:d6c9b09b4042	3518	#if !_FS_TINY
annieluo2	0:d6c9b09b4042	3519	if (res == FR_OK && (fp->flag & FA__DIRTY)) {
annieluo2	0:d6c9b09b4042	3520	if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	3521	res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	3522	else
annieluo2	0:d6c9b09b4042	3523	fp->flag &= ~FA__DIRTY;
annieluo2	0:d6c9b09b4042	3524	}
annieluo2	0:d6c9b09b4042	3525	#endif
annieluo2	0:d6c9b09b4042	3526	}
annieluo2	0:d6c9b09b4042	3527	if (res != FR_OK) fp->err = (FRESULT)res;
annieluo2	0:d6c9b09b4042	3528	}
annieluo2	0:d6c9b09b4042	3529
annieluo2	0:d6c9b09b4042	3530	LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	3531	}
annieluo2	0:d6c9b09b4042	3532
annieluo2	0:d6c9b09b4042	3533
annieluo2	0:d6c9b09b4042	3534
annieluo2	0:d6c9b09b4042	3535
annieluo2	0:d6c9b09b4042	3536	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3537	/* Delete a File or Directory */
annieluo2	0:d6c9b09b4042	3538	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3539
annieluo2	0:d6c9b09b4042	3540	FRESULT f_unlink (
annieluo2	0:d6c9b09b4042	3541	const TCHAR* path /* Pointer to the file or directory path */
annieluo2	0:d6c9b09b4042	3542	)
annieluo2	0:d6c9b09b4042	3543	{
annieluo2	0:d6c9b09b4042	3544	FRESULT res;
annieluo2	0:d6c9b09b4042	3545	FATFS_DIR dj, sdj;
annieluo2	0:d6c9b09b4042	3546	BYTE *dir;
annieluo2	0:d6c9b09b4042	3547	DWORD dclst = 0;
annieluo2	0:d6c9b09b4042	3548	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3549
annieluo2	0:d6c9b09b4042	3550
annieluo2	0:d6c9b09b4042	3551	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3552	res = find_volume(&dj.fs, &path, 1);
annieluo2	0:d6c9b09b4042	3553	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3554	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	3555	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	3556	if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
annieluo2	0:d6c9b09b4042	3557	res = FR_INVALID_NAME; /* Cannot remove dot entry */
annieluo2	0:d6c9b09b4042	3558	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	3559	if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open object */
annieluo2	0:d6c9b09b4042	3560	#endif
annieluo2	0:d6c9b09b4042	3561	if (res == FR_OK) { /* The object is accessible */
annieluo2	0:d6c9b09b4042	3562	dir = dj.dir;
annieluo2	0:d6c9b09b4042	3563	if (!dir) {
annieluo2	0:d6c9b09b4042	3564	res = FR_INVALID_NAME; /* Cannot remove the origin directory */
annieluo2	0:d6c9b09b4042	3565	} else {
annieluo2	0:d6c9b09b4042	3566	if (dir[DIR_Attr] & AM_RDO)
annieluo2	0:d6c9b09b4042	3567	res = FR_DENIED; /* Cannot remove R/O object */
annieluo2	0:d6c9b09b4042	3568	}
annieluo2	0:d6c9b09b4042	3569	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3570	dclst = ld_clust(dj.fs, dir);
annieluo2	0:d6c9b09b4042	3571	if (dclst && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-directory ? */
annieluo2	0:d6c9b09b4042	3572	#if _FS_RPATH
annieluo2	0:d6c9b09b4042	3573	if (dclst == dj.fs->cdir) { /* Is it the current directory? */
annieluo2	0:d6c9b09b4042	3574	res = FR_DENIED;
annieluo2	0:d6c9b09b4042	3575	} else
annieluo2	0:d6c9b09b4042	3576	#endif
annieluo2	0:d6c9b09b4042	3577	{
annieluo2	0:d6c9b09b4042	3578	mem_cpy(&sdj, &dj, sizeof (FATFS_DIR)); /* Open the sub-directory */
annieluo2	0:d6c9b09b4042	3579	sdj.sclust = dclst;
annieluo2	0:d6c9b09b4042	3580	res = dir_sdi(&sdj, 2);
annieluo2	0:d6c9b09b4042	3581	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3582	res = dir_read(&sdj, 0); /* Read an item (excluding dot entries) */
annieluo2	0:d6c9b09b4042	3583	if (res == FR_OK) res = FR_DENIED; /* Not empty? (cannot remove) */
annieluo2	0:d6c9b09b4042	3584	if (res == FR_NO_FILE) res = FR_OK; /* Empty? (can remove) */
annieluo2	0:d6c9b09b4042	3585	}
annieluo2	0:d6c9b09b4042	3586	}
annieluo2	0:d6c9b09b4042	3587	}
annieluo2	0:d6c9b09b4042	3588	}
annieluo2	0:d6c9b09b4042	3589	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3590	res = dir_remove(&dj); /* Remove the directory entry */
annieluo2	0:d6c9b09b4042	3591	if (res == FR_OK && dclst) /* Remove the cluster chain if exist */
annieluo2	0:d6c9b09b4042	3592	res = remove_chain(dj.fs, dclst);
annieluo2	0:d6c9b09b4042	3593	if (res == FR_OK) res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3594	}
annieluo2	0:d6c9b09b4042	3595	}
annieluo2	0:d6c9b09b4042	3596	FREE_BUF();
annieluo2	0:d6c9b09b4042	3597	}
annieluo2	0:d6c9b09b4042	3598
annieluo2	0:d6c9b09b4042	3599	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3600	}
annieluo2	0:d6c9b09b4042	3601
annieluo2	0:d6c9b09b4042	3602
annieluo2	0:d6c9b09b4042	3603
annieluo2	0:d6c9b09b4042	3604
annieluo2	0:d6c9b09b4042	3605	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3606	/* Create a Directory */
annieluo2	0:d6c9b09b4042	3607	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3608
annieluo2	0:d6c9b09b4042	3609	FRESULT f_mkdir (
annieluo2	0:d6c9b09b4042	3610	const TCHAR* path /* Pointer to the directory path */
annieluo2	0:d6c9b09b4042	3611	)
annieluo2	0:d6c9b09b4042	3612	{
annieluo2	0:d6c9b09b4042	3613	FRESULT res;
annieluo2	0:d6c9b09b4042	3614	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3615	BYTE *dir, n;
annieluo2	0:d6c9b09b4042	3616	DWORD dsc, dcl, pcl, tm = GET_FATTIME();
annieluo2	0:d6c9b09b4042	3617	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3618
annieluo2	0:d6c9b09b4042	3619
annieluo2	0:d6c9b09b4042	3620	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3621	res = find_volume(&dj.fs, &path, 1);
annieluo2	0:d6c9b09b4042	3622	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3623	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	3624	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	3625	if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
annieluo2	0:d6c9b09b4042	3626	if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT))
annieluo2	0:d6c9b09b4042	3627	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3628	if (res == FR_NO_FILE) { /* Can create a new directory */
annieluo2	0:d6c9b09b4042	3629	dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
annieluo2	0:d6c9b09b4042	3630	res = FR_OK;
annieluo2	0:d6c9b09b4042	3631	if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
annieluo2	0:d6c9b09b4042	3632	if (dcl == 1) res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	3633	if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	3634	if (res == FR_OK) /* Flush FAT */
annieluo2	0:d6c9b09b4042	3635	res = sync_window(dj.fs);
annieluo2	0:d6c9b09b4042	3636	if (res == FR_OK) { /* Initialize the new directory table */
annieluo2	0:d6c9b09b4042	3637	dsc = clust2sect(dj.fs, dcl);
annieluo2	0:d6c9b09b4042	3638	dir = dj.fs->win;
annieluo2	0:d6c9b09b4042	3639	mem_set(dir, 0, SS(dj.fs));
annieluo2	0:d6c9b09b4042	3640	mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
annieluo2	0:d6c9b09b4042	3641	dir[DIR_Name] = '.';
annieluo2	0:d6c9b09b4042	3642	dir[DIR_Attr] = AM_DIR;
annieluo2	0:d6c9b09b4042	3643	ST_DWORD(dir + DIR_WrtTime, tm);
annieluo2	0:d6c9b09b4042	3644	st_clust(dir, dcl);
annieluo2	0:d6c9b09b4042	3645	mem_cpy(dir + SZ_DIRE, dir, SZ_DIRE); /* Create ".." entry */
annieluo2	0:d6c9b09b4042	3646	dir[SZ_DIRE + 1] = '.'; pcl = dj.sclust;
annieluo2	0:d6c9b09b4042	3647	if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
annieluo2	0:d6c9b09b4042	3648	pcl = 0;
annieluo2	0:d6c9b09b4042	3649	st_clust(dir + SZ_DIRE, pcl);
annieluo2	0:d6c9b09b4042	3650	for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
annieluo2	0:d6c9b09b4042	3651	dj.fs->winsect = dsc++;
annieluo2	0:d6c9b09b4042	3652	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3653	res = sync_window(dj.fs);
annieluo2	0:d6c9b09b4042	3654	if (res != FR_OK) break;
annieluo2	0:d6c9b09b4042	3655	mem_set(dir, 0, SS(dj.fs));
annieluo2	0:d6c9b09b4042	3656	}
annieluo2	0:d6c9b09b4042	3657	}
annieluo2	0:d6c9b09b4042	3658	if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
annieluo2	0:d6c9b09b4042	3659	if (res != FR_OK) {
annieluo2	0:d6c9b09b4042	3660	remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
annieluo2	0:d6c9b09b4042	3661	} else {
annieluo2	0:d6c9b09b4042	3662	dir = dj.dir;
annieluo2	0:d6c9b09b4042	3663	dir[DIR_Attr] = AM_DIR; /* Attribute */
annieluo2	0:d6c9b09b4042	3664	ST_DWORD(dir + DIR_WrtTime, tm); /* Created time */
annieluo2	0:d6c9b09b4042	3665	st_clust(dir, dcl); /* Table start cluster */
annieluo2	0:d6c9b09b4042	3666	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3667	res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3668	}
annieluo2	0:d6c9b09b4042	3669	}
annieluo2	0:d6c9b09b4042	3670	FREE_BUF();
annieluo2	0:d6c9b09b4042	3671	}
annieluo2	0:d6c9b09b4042	3672
annieluo2	0:d6c9b09b4042	3673	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3674	}
annieluo2	0:d6c9b09b4042	3675
annieluo2	0:d6c9b09b4042	3676
annieluo2	0:d6c9b09b4042	3677
annieluo2	0:d6c9b09b4042	3678
annieluo2	0:d6c9b09b4042	3679	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3680	/* Change Attribute */
annieluo2	0:d6c9b09b4042	3681	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3682
annieluo2	0:d6c9b09b4042	3683	FRESULT f_chmod (
annieluo2	0:d6c9b09b4042	3684	const TCHAR* path, /* Pointer to the file path */
annieluo2	0:d6c9b09b4042	3685	BYTE attr, /* Attribute bits */
annieluo2	0:d6c9b09b4042	3686	BYTE mask /* Attribute mask to change */
annieluo2	0:d6c9b09b4042	3687	)
annieluo2	0:d6c9b09b4042	3688	{
annieluo2	0:d6c9b09b4042	3689	FRESULT res;
annieluo2	0:d6c9b09b4042	3690	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3691	BYTE *dir;
annieluo2	0:d6c9b09b4042	3692	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3693
annieluo2	0:d6c9b09b4042	3694
annieluo2	0:d6c9b09b4042	3695	res = find_volume(&dj.fs, &path, 1); /* Get logical drive number */
annieluo2	0:d6c9b09b4042	3696	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3697	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	3698	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	3699	FREE_BUF();
annieluo2	0:d6c9b09b4042	3700	if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
annieluo2	0:d6c9b09b4042	3701	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3702	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3703	dir = dj.dir;
annieluo2	0:d6c9b09b4042	3704	if (!dir) { /* Is it a root directory? */
annieluo2	0:d6c9b09b4042	3705	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3706	} else { /* File or sub directory */
annieluo2	0:d6c9b09b4042	3707	mask &= AM_RDO\|AM_HID\|AM_SYS\|AM_ARC; /* Valid attribute mask */
annieluo2	0:d6c9b09b4042	3708	dir[DIR_Attr] = (attr & mask) \| (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
annieluo2	0:d6c9b09b4042	3709	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3710	res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3711	}
annieluo2	0:d6c9b09b4042	3712	}
annieluo2	0:d6c9b09b4042	3713	}
annieluo2	0:d6c9b09b4042	3714
annieluo2	0:d6c9b09b4042	3715	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3716	}
annieluo2	0:d6c9b09b4042	3717
annieluo2	0:d6c9b09b4042	3718
annieluo2	0:d6c9b09b4042	3719
annieluo2	0:d6c9b09b4042	3720
annieluo2	0:d6c9b09b4042	3721	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3722	/* Rename File/Directory */
annieluo2	0:d6c9b09b4042	3723	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3724
annieluo2	0:d6c9b09b4042	3725	FRESULT f_rename (
annieluo2	0:d6c9b09b4042	3726	const TCHAR* path_old, /* Pointer to the object to be renamed */
annieluo2	0:d6c9b09b4042	3727	const TCHAR* path_new /* Pointer to the new name */
annieluo2	0:d6c9b09b4042	3728	)
annieluo2	0:d6c9b09b4042	3729	{
annieluo2	0:d6c9b09b4042	3730	FRESULT res;
annieluo2	0:d6c9b09b4042	3731	FATFS_DIR djo, djn;
annieluo2	0:d6c9b09b4042	3732	BYTE buf[21], *dir;
annieluo2	0:d6c9b09b4042	3733	DWORD dw;
annieluo2	0:d6c9b09b4042	3734	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3735
annieluo2	0:d6c9b09b4042	3736
annieluo2	0:d6c9b09b4042	3737	/* Get logical drive number of the source object */
annieluo2	0:d6c9b09b4042	3738	res = find_volume(&djo.fs, &path_old, 1);
annieluo2	0:d6c9b09b4042	3739	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3740	djn.fs = djo.fs;
annieluo2	0:d6c9b09b4042	3741	INIT_BUF(djo);
annieluo2	0:d6c9b09b4042	3742	res = follow_path(&djo, path_old); /* Check old object */
annieluo2	0:d6c9b09b4042	3743	if (_FS_RPATH && res == FR_OK && (djo.fn[NSFLAG] & NS_DOT))
annieluo2	0:d6c9b09b4042	3744	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3745	#if _FS_LOCK
annieluo2	0:d6c9b09b4042	3746	if (res == FR_OK) res = chk_lock(&djo, 2);
annieluo2	0:d6c9b09b4042	3747	#endif
annieluo2	0:d6c9b09b4042	3748	if (res == FR_OK) { /* Old object is found */
annieluo2	0:d6c9b09b4042	3749	if (!djo.dir) { /* Is root dir? */
annieluo2	0:d6c9b09b4042	3750	res = FR_NO_FILE;
annieluo2	0:d6c9b09b4042	3751	} else {
annieluo2	0:d6c9b09b4042	3752	mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about object except name */
annieluo2	0:d6c9b09b4042	3753	mem_cpy(&djn, &djo, sizeof (FATFS_DIR)); /* Duplicate the directory object */
annieluo2	0:d6c9b09b4042	3754	if (get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
annieluo2	0:d6c9b09b4042	3755	res = follow_path(&djn, path_new); /* and make sure if new object name is not conflicting */
annieluo2	0:d6c9b09b4042	3756	else
annieluo2	0:d6c9b09b4042	3757	res = FR_INVALID_DRIVE;
annieluo2	0:d6c9b09b4042	3758	if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
annieluo2	0:d6c9b09b4042	3759	if (res == FR_NO_FILE) { /* It is a valid path and no name collision */
annieluo2	0:d6c9b09b4042	3760	res = dir_register(&djn); /* Register the new entry */
annieluo2	0:d6c9b09b4042	3761	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3762	/* Start of critical section where any interruption can cause a cross-link */
annieluo2	0:d6c9b09b4042	3763	dir = djn.dir; /* Copy information about object except name */
annieluo2	0:d6c9b09b4042	3764	mem_cpy(dir + 13, buf + 2, 19);
annieluo2	0:d6c9b09b4042	3765	dir[DIR_Attr] = buf[0] \| AM_ARC;
annieluo2	0:d6c9b09b4042	3766	djo.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3767	if ((dir[DIR_Attr] & AM_DIR) && djo.sclust != djn.sclust) { /* Update .. entry in the sub-directory if needed */
annieluo2	0:d6c9b09b4042	3768	dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
annieluo2	0:d6c9b09b4042	3769	if (!dw) {
annieluo2	0:d6c9b09b4042	3770	res = FR_INT_ERR;
annieluo2	0:d6c9b09b4042	3771	} else {
annieluo2	0:d6c9b09b4042	3772	res = move_window(djo.fs, dw);
annieluo2	0:d6c9b09b4042	3773	dir = djo.fs->win + SZ_DIRE * 1; /* Ptr to .. entry */
annieluo2	0:d6c9b09b4042	3774	if (res == FR_OK && dir[1] == '.') {
annieluo2	0:d6c9b09b4042	3775	st_clust(dir, djn.sclust);
annieluo2	0:d6c9b09b4042	3776	djo.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3777	}
annieluo2	0:d6c9b09b4042	3778	}
annieluo2	0:d6c9b09b4042	3779	}
annieluo2	0:d6c9b09b4042	3780	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3781	res = dir_remove(&djo); /* Remove old entry */
annieluo2	0:d6c9b09b4042	3782	if (res == FR_OK)
annieluo2	0:d6c9b09b4042	3783	res = sync_fs(djo.fs);
annieluo2	0:d6c9b09b4042	3784	}
annieluo2	0:d6c9b09b4042	3785	/* End of critical section */
annieluo2	0:d6c9b09b4042	3786	}
annieluo2	0:d6c9b09b4042	3787	}
annieluo2	0:d6c9b09b4042	3788	}
annieluo2	0:d6c9b09b4042	3789	}
annieluo2	0:d6c9b09b4042	3790	FREE_BUF();
annieluo2	0:d6c9b09b4042	3791	}
annieluo2	0:d6c9b09b4042	3792
annieluo2	0:d6c9b09b4042	3793	LEAVE_FF(djo.fs, res);
annieluo2	0:d6c9b09b4042	3794	}
annieluo2	0:d6c9b09b4042	3795
annieluo2	0:d6c9b09b4042	3796
annieluo2	0:d6c9b09b4042	3797
annieluo2	0:d6c9b09b4042	3798
annieluo2	0:d6c9b09b4042	3799	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3800	/* Change Timestamp */
annieluo2	0:d6c9b09b4042	3801	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3802
annieluo2	0:d6c9b09b4042	3803	FRESULT f_utime (
annieluo2	0:d6c9b09b4042	3804	const TCHAR* path, /* Pointer to the file/directory name */
annieluo2	0:d6c9b09b4042	3805	const FILINFO* fno /* Pointer to the time stamp to be set */
annieluo2	0:d6c9b09b4042	3806	)
annieluo2	0:d6c9b09b4042	3807	{
annieluo2	0:d6c9b09b4042	3808	FRESULT res;
annieluo2	0:d6c9b09b4042	3809	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3810	BYTE *dir;
annieluo2	0:d6c9b09b4042	3811	DEFINE_NAMEBUF;
annieluo2	0:d6c9b09b4042	3812
annieluo2	0:d6c9b09b4042	3813
annieluo2	0:d6c9b09b4042	3814	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3815	res = find_volume(&dj.fs, &path, 1);
annieluo2	0:d6c9b09b4042	3816	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3817	INIT_BUF(dj);
annieluo2	0:d6c9b09b4042	3818	res = follow_path(&dj, path); /* Follow the file path */
annieluo2	0:d6c9b09b4042	3819	FREE_BUF();
annieluo2	0:d6c9b09b4042	3820	if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT))
annieluo2	0:d6c9b09b4042	3821	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3822	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3823	dir = dj.dir;
annieluo2	0:d6c9b09b4042	3824	if (!dir) { /* Root directory */
annieluo2	0:d6c9b09b4042	3825	res = FR_INVALID_NAME;
annieluo2	0:d6c9b09b4042	3826	} else { /* File or sub-directory */
annieluo2	0:d6c9b09b4042	3827	ST_WORD(dir + DIR_WrtTime, fno->ftime);
annieluo2	0:d6c9b09b4042	3828	ST_WORD(dir + DIR_WrtDate, fno->fdate);
annieluo2	0:d6c9b09b4042	3829	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3830	res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3831	}
annieluo2	0:d6c9b09b4042	3832	}
annieluo2	0:d6c9b09b4042	3833	}
annieluo2	0:d6c9b09b4042	3834
annieluo2	0:d6c9b09b4042	3835	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3836	}
annieluo2	0:d6c9b09b4042	3837
annieluo2	0:d6c9b09b4042	3838	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	3839	#endif /* _FS_MINIMIZE == 0 */
annieluo2	0:d6c9b09b4042	3840	#endif /* _FS_MINIMIZE <= 1 */
annieluo2	0:d6c9b09b4042	3841	#endif /* _FS_MINIMIZE <= 2 */
annieluo2	0:d6c9b09b4042	3842
annieluo2	0:d6c9b09b4042	3843
annieluo2	0:d6c9b09b4042	3844
annieluo2	0:d6c9b09b4042	3845
annieluo2	0:d6c9b09b4042	3846	#if _USE_LABEL
annieluo2	0:d6c9b09b4042	3847	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3848	/* Get volume label */
annieluo2	0:d6c9b09b4042	3849	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3850
annieluo2	0:d6c9b09b4042	3851	FRESULT f_getlabel (
annieluo2	0:d6c9b09b4042	3852	const TCHAR* path, /* Path name of the logical drive number */
annieluo2	0:d6c9b09b4042	3853	TCHAR* label, /* Pointer to a buffer to return the volume label */
annieluo2	0:d6c9b09b4042	3854	DWORD* vsn /* Pointer to a variable to return the volume serial number */
annieluo2	0:d6c9b09b4042	3855	)
annieluo2	0:d6c9b09b4042	3856	{
annieluo2	0:d6c9b09b4042	3857	FRESULT res;
annieluo2	0:d6c9b09b4042	3858	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3859	UINT i, j;
annieluo2	0:d6c9b09b4042	3860	#if _USE_LFN && _LFN_UNICODE
annieluo2	0:d6c9b09b4042	3861	WCHAR w;
annieluo2	0:d6c9b09b4042	3862	#endif
annieluo2	0:d6c9b09b4042	3863
annieluo2	0:d6c9b09b4042	3864
annieluo2	0:d6c9b09b4042	3865	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3866	res = find_volume(&dj.fs, &path, 0);
annieluo2	0:d6c9b09b4042	3867
annieluo2	0:d6c9b09b4042	3868	/* Get volume label */
annieluo2	0:d6c9b09b4042	3869	if (res == FR_OK && label) {
annieluo2	0:d6c9b09b4042	3870	dj.sclust = 0; /* Open root directory */
annieluo2	0:d6c9b09b4042	3871	res = dir_sdi(&dj, 0);
annieluo2	0:d6c9b09b4042	3872	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3873	res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
annieluo2	0:d6c9b09b4042	3874	if (res == FR_OK) { /* A volume label is exist */
annieluo2	0:d6c9b09b4042	3875	#if _USE_LFN && _LFN_UNICODE
annieluo2	0:d6c9b09b4042	3876	i = j = 0;
annieluo2	0:d6c9b09b4042	3877	do {
annieluo2	0:d6c9b09b4042	3878	w = (i < 11) ? dj.dir[i++] : ' ';
annieluo2	0:d6c9b09b4042	3879	if (IsDBCS1(w) && i < 11 && IsDBCS2(dj.dir[i]))
annieluo2	0:d6c9b09b4042	3880	w = w << 8 \| dj.dir[i++];
annieluo2	0:d6c9b09b4042	3881	label[j++] = ff_convert(w, 1); /* OEM -> Unicode */
annieluo2	0:d6c9b09b4042	3882	} while (j < 11);
annieluo2	0:d6c9b09b4042	3883	#else
annieluo2	0:d6c9b09b4042	3884	mem_cpy(label, dj.dir, 11);
annieluo2	0:d6c9b09b4042	3885	#endif
annieluo2	0:d6c9b09b4042	3886	j = 11;
annieluo2	0:d6c9b09b4042	3887	do {
annieluo2	0:d6c9b09b4042	3888	label[j] = 0;
annieluo2	0:d6c9b09b4042	3889	if (!j) break;
annieluo2	0:d6c9b09b4042	3890	} while (label[--j] == ' ');
annieluo2	0:d6c9b09b4042	3891	}
annieluo2	0:d6c9b09b4042	3892	if (res == FR_NO_FILE) { /* No label, return nul string */
annieluo2	0:d6c9b09b4042	3893	label[0] = 0;
annieluo2	0:d6c9b09b4042	3894	res = FR_OK;
annieluo2	0:d6c9b09b4042	3895	}
annieluo2	0:d6c9b09b4042	3896	}
annieluo2	0:d6c9b09b4042	3897	}
annieluo2	0:d6c9b09b4042	3898
annieluo2	0:d6c9b09b4042	3899	/* Get volume serial number */
annieluo2	0:d6c9b09b4042	3900	if (res == FR_OK && vsn) {
annieluo2	0:d6c9b09b4042	3901	res = move_window(dj.fs, dj.fs->volbase);
annieluo2	0:d6c9b09b4042	3902	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3903	i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID;
annieluo2	0:d6c9b09b4042	3904	*vsn = LD_DWORD(&dj.fs->win[i]);
annieluo2	0:d6c9b09b4042	3905	}
annieluo2	0:d6c9b09b4042	3906	}
annieluo2	0:d6c9b09b4042	3907
annieluo2	0:d6c9b09b4042	3908	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3909	}
annieluo2	0:d6c9b09b4042	3910
annieluo2	0:d6c9b09b4042	3911
annieluo2	0:d6c9b09b4042	3912
annieluo2	0:d6c9b09b4042	3913	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	3914	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3915	/* Set volume label */
annieluo2	0:d6c9b09b4042	3916	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	3917
annieluo2	0:d6c9b09b4042	3918	FRESULT f_setlabel (
annieluo2	0:d6c9b09b4042	3919	const TCHAR* label /* Pointer to the volume label to set */
annieluo2	0:d6c9b09b4042	3920	)
annieluo2	0:d6c9b09b4042	3921	{
annieluo2	0:d6c9b09b4042	3922	FRESULT res;
annieluo2	0:d6c9b09b4042	3923	FATFS_DIR dj;
annieluo2	0:d6c9b09b4042	3924	BYTE vn[11];
annieluo2	0:d6c9b09b4042	3925	UINT i, j, sl;
annieluo2	0:d6c9b09b4042	3926	WCHAR w;
annieluo2	0:d6c9b09b4042	3927	DWORD tm;
annieluo2	0:d6c9b09b4042	3928
annieluo2	0:d6c9b09b4042	3929
annieluo2	0:d6c9b09b4042	3930	/* Get logical drive number */
annieluo2	0:d6c9b09b4042	3931	res = find_volume(&dj.fs, &label, 1);
annieluo2	0:d6c9b09b4042	3932	if (res) LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	3933
annieluo2	0:d6c9b09b4042	3934	/* Create a volume label in directory form */
annieluo2	0:d6c9b09b4042	3935	vn[0] = 0;
annieluo2	0:d6c9b09b4042	3936	for (sl = 0; label[sl]; sl++) ; /* Get name length */
annieluo2	0:d6c9b09b4042	3937	for ( ; sl && label[sl - 1] == ' '; sl--) ; /* Remove trailing spaces */
annieluo2	0:d6c9b09b4042	3938	if (sl) { /* Create volume label in directory form */
annieluo2	0:d6c9b09b4042	3939	i = j = 0;
annieluo2	0:d6c9b09b4042	3940	do {
annieluo2	0:d6c9b09b4042	3941	#if _USE_LFN && _LFN_UNICODE
annieluo2	0:d6c9b09b4042	3942	w = ff_convert(ff_wtoupper(label[i++]), 0);
annieluo2	0:d6c9b09b4042	3943	#else
annieluo2	0:d6c9b09b4042	3944	w = (BYTE)label[i++];
annieluo2	0:d6c9b09b4042	3945	if (IsDBCS1(w))
annieluo2	0:d6c9b09b4042	3946	w = (j < 10 && i < sl && IsDBCS2(label[i])) ? w << 8 \| (BYTE)label[i++] : 0;
annieluo2	0:d6c9b09b4042	3947	#if _USE_LFN
annieluo2	0:d6c9b09b4042	3948	w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
annieluo2	0:d6c9b09b4042	3949	#else
annieluo2	0:d6c9b09b4042	3950	if (IsLower(w)) w -= 0x20; /* To upper ASCII characters */
annieluo2	0:d6c9b09b4042	3951	#ifdef _EXCVT
annieluo2	0:d6c9b09b4042	3952	if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
annieluo2	0:d6c9b09b4042	3953	#else
annieluo2	0:d6c9b09b4042	3954	if (!_DF1S && w >= 0x80) w = 0; /* Reject extended characters (ASCII cfg) */
annieluo2	0:d6c9b09b4042	3955	#endif
annieluo2	0:d6c9b09b4042	3956	#endif
annieluo2	0:d6c9b09b4042	3957	#endif
annieluo2	0:d6c9b09b4042	3958	if (!w \|\| chk_chr("\"+,.:;<=>\?[]\|\x7F", w) \|\| j >= (UINT)((w >= 0x100) ? 10 : 11)) / Reject invalid characters for volume label */
annieluo2	0:d6c9b09b4042	3959	LEAVE_FF(dj.fs, FR_INVALID_NAME);
annieluo2	0:d6c9b09b4042	3960	if (w >= 0x100) vn[j++] = (BYTE)(w >> 8);
annieluo2	0:d6c9b09b4042	3961	vn[j++] = (BYTE)w;
annieluo2	0:d6c9b09b4042	3962	} while (i < sl);
annieluo2	0:d6c9b09b4042	3963	while (j < 11) vn[j++] = ' '; /* Fill remaining name field */
annieluo2	0:d6c9b09b4042	3964	if (vn[0] == DDEM) LEAVE_FF(dj.fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */
annieluo2	0:d6c9b09b4042	3965	}
annieluo2	0:d6c9b09b4042	3966
annieluo2	0:d6c9b09b4042	3967	/* Set volume label */
annieluo2	0:d6c9b09b4042	3968	dj.sclust = 0; /* Open root directory */
annieluo2	0:d6c9b09b4042	3969	res = dir_sdi(&dj, 0);
annieluo2	0:d6c9b09b4042	3970	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3971	res = dir_read(&dj, 1); /* Get an entry with AM_VOL */
annieluo2	0:d6c9b09b4042	3972	if (res == FR_OK) { /* A volume label is found */
annieluo2	0:d6c9b09b4042	3973	if (vn[0]) {
annieluo2	0:d6c9b09b4042	3974	mem_cpy(dj.dir, vn, 11); /* Change the volume label name */
annieluo2	0:d6c9b09b4042	3975	tm = GET_FATTIME();
annieluo2	0:d6c9b09b4042	3976	ST_DWORD(dj.dir + DIR_WrtTime, tm);
annieluo2	0:d6c9b09b4042	3977	} else {
annieluo2	0:d6c9b09b4042	3978	dj.dir[0] = DDEM; /* Remove the volume label */
annieluo2	0:d6c9b09b4042	3979	}
annieluo2	0:d6c9b09b4042	3980	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3981	res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3982	} else { /* No volume label is found or error */
annieluo2	0:d6c9b09b4042	3983	if (res == FR_NO_FILE) {
annieluo2	0:d6c9b09b4042	3984	res = FR_OK;
annieluo2	0:d6c9b09b4042	3985	if (vn[0]) { /* Create volume label as new */
annieluo2	0:d6c9b09b4042	3986	res = dir_alloc(&dj, 1); /* Allocate an entry for volume label */
annieluo2	0:d6c9b09b4042	3987	if (res == FR_OK) {
annieluo2	0:d6c9b09b4042	3988	mem_set(dj.dir, 0, SZ_DIRE); /* Set volume label */
annieluo2	0:d6c9b09b4042	3989	mem_cpy(dj.dir, vn, 11);
annieluo2	0:d6c9b09b4042	3990	dj.dir[DIR_Attr] = AM_VOL;
annieluo2	0:d6c9b09b4042	3991	tm = GET_FATTIME();
annieluo2	0:d6c9b09b4042	3992	ST_DWORD(dj.dir + DIR_WrtTime, tm);
annieluo2	0:d6c9b09b4042	3993	dj.fs->wflag = 1;
annieluo2	0:d6c9b09b4042	3994	res = sync_fs(dj.fs);
annieluo2	0:d6c9b09b4042	3995	}
annieluo2	0:d6c9b09b4042	3996	}
annieluo2	0:d6c9b09b4042	3997	}
annieluo2	0:d6c9b09b4042	3998	}
annieluo2	0:d6c9b09b4042	3999	}
annieluo2	0:d6c9b09b4042	4000
annieluo2	0:d6c9b09b4042	4001	LEAVE_FF(dj.fs, res);
annieluo2	0:d6c9b09b4042	4002	}
annieluo2	0:d6c9b09b4042	4003
annieluo2	0:d6c9b09b4042	4004	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	4005	#endif /* _USE_LABEL */
annieluo2	0:d6c9b09b4042	4006
annieluo2	0:d6c9b09b4042	4007
annieluo2	0:d6c9b09b4042	4008
annieluo2	0:d6c9b09b4042	4009	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4010	/* Forward data to the stream directly (available on only tiny cfg) */
annieluo2	0:d6c9b09b4042	4011	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4012	#if _USE_FORWARD && _FS_TINY
annieluo2	0:d6c9b09b4042	4013
annieluo2	0:d6c9b09b4042	4014	FRESULT f_forward (
annieluo2	0:d6c9b09b4042	4015	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	4016	UINT (func)(const BYTE,UINT), /* Pointer to the streaming function */
annieluo2	0:d6c9b09b4042	4017	UINT btf, /* Number of bytes to forward */
annieluo2	0:d6c9b09b4042	4018	UINT* bf /* Pointer to number of bytes forwarded */
annieluo2	0:d6c9b09b4042	4019	)
annieluo2	0:d6c9b09b4042	4020	{
annieluo2	0:d6c9b09b4042	4021	FRESULT res;
annieluo2	0:d6c9b09b4042	4022	DWORD remain, clst, sect;
annieluo2	0:d6c9b09b4042	4023	UINT rcnt;
annieluo2	0:d6c9b09b4042	4024	BYTE csect;
annieluo2	0:d6c9b09b4042	4025
annieluo2	0:d6c9b09b4042	4026
annieluo2	0:d6c9b09b4042	4027	bf = 0; / Clear transfer byte counter */
annieluo2	0:d6c9b09b4042	4028
annieluo2	0:d6c9b09b4042	4029	res = validate(fp); /* Check validity of the object */
annieluo2	0:d6c9b09b4042	4030	if (res != FR_OK) LEAVE_FF(fp->fs, res);
annieluo2	0:d6c9b09b4042	4031	if (fp->err) /* Check error */
annieluo2	0:d6c9b09b4042	4032	LEAVE_FF(fp->fs, (FRESULT)fp->err);
annieluo2	0:d6c9b09b4042	4033	if (!(fp->flag & FA_READ)) /* Check access mode */
annieluo2	0:d6c9b09b4042	4034	LEAVE_FF(fp->fs, FR_DENIED);
annieluo2	0:d6c9b09b4042	4035
annieluo2	0:d6c9b09b4042	4036	remain = fp->fsize - fp->fptr;
annieluo2	0:d6c9b09b4042	4037	if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
annieluo2	0:d6c9b09b4042	4038
annieluo2	0:d6c9b09b4042	4039	for ( ; btf && (func)(0, 0); / Repeat until all data transferred or stream becomes busy */
annieluo2	0:d6c9b09b4042	4040	fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
annieluo2	0:d6c9b09b4042	4041	csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
annieluo2	0:d6c9b09b4042	4042	if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
annieluo2	0:d6c9b09b4042	4043	if (!csect) { /* On the cluster boundary? */
annieluo2	0:d6c9b09b4042	4044	clst = (fp->fptr == 0) ? /* On the top of the file? */
annieluo2	0:d6c9b09b4042	4045	fp->sclust : get_fat(fp->fs, fp->clust);
annieluo2	0:d6c9b09b4042	4046	if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	4047	if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	4048	fp->clust = clst; /* Update current cluster */
annieluo2	0:d6c9b09b4042	4049	}
annieluo2	0:d6c9b09b4042	4050	}
annieluo2	0:d6c9b09b4042	4051	sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
annieluo2	0:d6c9b09b4042	4052	if (!sect) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	4053	sect += csect;
annieluo2	0:d6c9b09b4042	4054	if (move_window(fp->fs, sect) != FR_OK) /* Move sector window */
annieluo2	0:d6c9b09b4042	4055	ABORT(fp->fs, FR_DISK_ERR);
annieluo2	0:d6c9b09b4042	4056	fp->dsect = sect;
annieluo2	0:d6c9b09b4042	4057	rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
annieluo2	0:d6c9b09b4042	4058	if (rcnt > btf) rcnt = btf;
annieluo2	0:d6c9b09b4042	4059	rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
annieluo2	0:d6c9b09b4042	4060	if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
annieluo2	0:d6c9b09b4042	4061	}
annieluo2	0:d6c9b09b4042	4062
annieluo2	0:d6c9b09b4042	4063	LEAVE_FF(fp->fs, FR_OK);
annieluo2	0:d6c9b09b4042	4064	}
annieluo2	0:d6c9b09b4042	4065	#endif /* _USE_FORWARD */
annieluo2	0:d6c9b09b4042	4066
annieluo2	0:d6c9b09b4042	4067
annieluo2	0:d6c9b09b4042	4068
annieluo2	0:d6c9b09b4042	4069	#if _USE_MKFS && !_FS_READONLY
annieluo2	0:d6c9b09b4042	4070	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4071	/* Create file system on the logical drive */
annieluo2	0:d6c9b09b4042	4072	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4073	#define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */
annieluo2	0:d6c9b09b4042	4074	#define N_FATS 1 /* Number of FATs (1 or 2) */
annieluo2	0:d6c9b09b4042	4075
annieluo2	0:d6c9b09b4042	4076
annieluo2	0:d6c9b09b4042	4077	FRESULT f_mkfs (
annieluo2	0:d6c9b09b4042	4078	const TCHAR* path, /* Logical drive number */
annieluo2	0:d6c9b09b4042	4079	BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
annieluo2	0:d6c9b09b4042	4080	UINT au /* Size of allocation unit in unit of byte or sector */
annieluo2	0:d6c9b09b4042	4081	)
annieluo2	0:d6c9b09b4042	4082	{
annieluo2	0:d6c9b09b4042	4083	static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
annieluo2	0:d6c9b09b4042	4084	static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
annieluo2	0:d6c9b09b4042	4085	int vol;
annieluo2	0:d6c9b09b4042	4086	BYTE fmt, md, sys, *tbl, pdrv, part;
annieluo2	0:d6c9b09b4042	4087	DWORD n_clst, vs, n, wsect;
annieluo2	0:d6c9b09b4042	4088	UINT i;
annieluo2	0:d6c9b09b4042	4089	DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
annieluo2	0:d6c9b09b4042	4090	DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
annieluo2	0:d6c9b09b4042	4091	FATFS *fs;
annieluo2	0:d6c9b09b4042	4092	DSTATUS stat;
annieluo2	0:d6c9b09b4042	4093	#if _USE_TRIM
annieluo2	0:d6c9b09b4042	4094	DWORD eb[2];
annieluo2	0:d6c9b09b4042	4095	#endif
annieluo2	0:d6c9b09b4042	4096
annieluo2	0:d6c9b09b4042	4097
annieluo2	0:d6c9b09b4042	4098	/* Check mounted drive and clear work area */
annieluo2	0:d6c9b09b4042	4099	if (sfd > 1) return FR_INVALID_PARAMETER;
annieluo2	0:d6c9b09b4042	4100	vol = get_ldnumber(&path);
annieluo2	0:d6c9b09b4042	4101	if (vol < 0) return FR_INVALID_DRIVE;
annieluo2	0:d6c9b09b4042	4102	fs = FatFs[vol];
annieluo2	0:d6c9b09b4042	4103	if (!fs) return FR_NOT_ENABLED;
annieluo2	0:d6c9b09b4042	4104	fs->fs_type = 0;
annieluo2	0:d6c9b09b4042	4105	pdrv = LD2PD(vol); /* Physical drive */
annieluo2	0:d6c9b09b4042	4106	part = LD2PT(vol); /* Partition (0:auto detect, 1-4:get from partition table)*/
annieluo2	0:d6c9b09b4042	4107
annieluo2	0:d6c9b09b4042	4108	/* Get disk statics */
annieluo2	0:d6c9b09b4042	4109	stat = disk_initialize(pdrv);
annieluo2	0:d6c9b09b4042	4110	if (stat & STA_NOINIT) return FR_NOT_READY;
annieluo2	0:d6c9b09b4042	4111	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
annieluo2	0:d6c9b09b4042	4112	#if _MAX_SS != _MIN_SS /* Get disk sector size */
annieluo2	0:d6c9b09b4042	4113	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK \|\| SS(fs) > _MAX_SS \|\| SS(fs) < _MIN_SS)
annieluo2	0:d6c9b09b4042	4114	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4115	#endif
annieluo2	0:d6c9b09b4042	4116	if (_MULTI_PARTITION && part) {
annieluo2	0:d6c9b09b4042	4117	/* Get partition information from partition table in the MBR */
annieluo2	0:d6c9b09b4042	4118	if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4119	if (LD_WORD(fs->win + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
annieluo2	0:d6c9b09b4042	4120	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
annieluo2	0:d6c9b09b4042	4121	if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
annieluo2	0:d6c9b09b4042	4122	b_vol = LD_DWORD(tbl + 8); /* Volume start sector */
annieluo2	0:d6c9b09b4042	4123	n_vol = LD_DWORD(tbl + 12); /* Volume size */
annieluo2	0:d6c9b09b4042	4124	} else {
annieluo2	0:d6c9b09b4042	4125	/* Create a partition in this function */
annieluo2	0:d6c9b09b4042	4126	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK \|\| n_vol < 128)
annieluo2	0:d6c9b09b4042	4127	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4128	b_vol = (sfd) ? 0 : 63; /* Volume start sector */
annieluo2	0:d6c9b09b4042	4129	n_vol -= b_vol; /* Volume size */
annieluo2	0:d6c9b09b4042	4130	}
annieluo2	0:d6c9b09b4042	4131
annieluo2	0:d6c9b09b4042	4132	if (au & (au - 1)) au = 0;
annieluo2	0:d6c9b09b4042	4133	if (!au) { /* AU auto selection */
annieluo2	0:d6c9b09b4042	4134	vs = n_vol / (2000 / (SS(fs) / 512));
annieluo2	0:d6c9b09b4042	4135	for (i = 0; vs < vst[i]; i++) ;
annieluo2	0:d6c9b09b4042	4136	au = cst[i];
annieluo2	0:d6c9b09b4042	4137	}
annieluo2	0:d6c9b09b4042	4138	if (au >= _MIN_SS) au /= SS(fs); /* Number of sectors per cluster */
annieluo2	0:d6c9b09b4042	4139	if (!au) au = 1;
annieluo2	0:d6c9b09b4042	4140	if (au > 128) au = 128;
annieluo2	0:d6c9b09b4042	4141
annieluo2	0:d6c9b09b4042	4142	/* Pre-compute number of clusters and FAT sub-type */
annieluo2	0:d6c9b09b4042	4143	n_clst = n_vol / au;
annieluo2	0:d6c9b09b4042	4144	fmt = FS_FAT12;
annieluo2	0:d6c9b09b4042	4145	if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
annieluo2	0:d6c9b09b4042	4146	if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
annieluo2	0:d6c9b09b4042	4147
annieluo2	0:d6c9b09b4042	4148	/* Determine offset and size of FAT structure */
annieluo2	0:d6c9b09b4042	4149	if (fmt == FS_FAT32) {
annieluo2	0:d6c9b09b4042	4150	n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
annieluo2	0:d6c9b09b4042	4151	n_rsv = 32;
annieluo2	0:d6c9b09b4042	4152	n_dir = 0;
annieluo2	0:d6c9b09b4042	4153	} else {
annieluo2	0:d6c9b09b4042	4154	n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
annieluo2	0:d6c9b09b4042	4155	n_fat = (n_fat + SS(fs) - 1) / SS(fs);
annieluo2	0:d6c9b09b4042	4156	n_rsv = 1;
annieluo2	0:d6c9b09b4042	4157	n_dir = (DWORD)N_ROOTDIR * SZ_DIRE / SS(fs);
annieluo2	0:d6c9b09b4042	4158	}
annieluo2	0:d6c9b09b4042	4159	b_fat = b_vol + n_rsv; /* FAT area start sector */
annieluo2	0:d6c9b09b4042	4160	b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
annieluo2	0:d6c9b09b4042	4161	b_data = b_dir + n_dir; /* Data area start sector */
annieluo2	0:d6c9b09b4042	4162	if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
annieluo2	0:d6c9b09b4042	4163
annieluo2	0:d6c9b09b4042	4164	/* Align data start sector to erase block boundary (for flash memory media) */
annieluo2	0:d6c9b09b4042	4165	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK \|\| !n \|\| n > 32768) n = 1;
annieluo2	0:d6c9b09b4042	4166	n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
annieluo2	0:d6c9b09b4042	4167	n = (n - b_data) / N_FATS;
annieluo2	0:d6c9b09b4042	4168	if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
annieluo2	0:d6c9b09b4042	4169	n_rsv += n;
annieluo2	0:d6c9b09b4042	4170	b_fat += n;
annieluo2	0:d6c9b09b4042	4171	} else { /* FAT12/16: Expand FAT size */
annieluo2	0:d6c9b09b4042	4172	n_fat += n;
annieluo2	0:d6c9b09b4042	4173	}
annieluo2	0:d6c9b09b4042	4174
annieluo2	0:d6c9b09b4042	4175	/* Determine number of clusters and final check of validity of the FAT sub-type */
annieluo2	0:d6c9b09b4042	4176	n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
annieluo2	0:d6c9b09b4042	4177	if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
annieluo2	0:d6c9b09b4042	4178	\|\| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
annieluo2	0:d6c9b09b4042	4179	return FR_MKFS_ABORTED;
annieluo2	0:d6c9b09b4042	4180
annieluo2	0:d6c9b09b4042	4181	/* Determine system ID in the partition table */
annieluo2	0:d6c9b09b4042	4182	if (fmt == FS_FAT32) {
annieluo2	0:d6c9b09b4042	4183	sys = 0x0C; /* FAT32X */
annieluo2	0:d6c9b09b4042	4184	} else {
annieluo2	0:d6c9b09b4042	4185	if (fmt == FS_FAT12 && n_vol < 0x10000) {
annieluo2	0:d6c9b09b4042	4186	sys = 0x01; /* FAT12(<65536) */
annieluo2	0:d6c9b09b4042	4187	} else {
annieluo2	0:d6c9b09b4042	4188	sys = (n_vol < 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */
annieluo2	0:d6c9b09b4042	4189	}
annieluo2	0:d6c9b09b4042	4190	}
annieluo2	0:d6c9b09b4042	4191
annieluo2	0:d6c9b09b4042	4192	if (_MULTI_PARTITION && part) {
annieluo2	0:d6c9b09b4042	4193	/* Update system ID in the partition table */
annieluo2	0:d6c9b09b4042	4194	tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
annieluo2	0:d6c9b09b4042	4195	tbl[4] = sys;
annieluo2	0:d6c9b09b4042	4196	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to teh MBR */
annieluo2	0:d6c9b09b4042	4197	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4198	md = 0xF8;
annieluo2	0:d6c9b09b4042	4199	} else {
annieluo2	0:d6c9b09b4042	4200	if (sfd) { /* No partition table (SFD) */
annieluo2	0:d6c9b09b4042	4201	md = 0xF0;
annieluo2	0:d6c9b09b4042	4202	} else { /* Create partition table (FDISK) */
annieluo2	0:d6c9b09b4042	4203	mem_set(fs->win, 0, SS(fs));
annieluo2	0:d6c9b09b4042	4204	tbl = fs->win + MBR_Table; /* Create partition table for single partition in the drive */
annieluo2	0:d6c9b09b4042	4205	tbl[1] = 1; /* Partition start head */
annieluo2	0:d6c9b09b4042	4206	tbl[2] = 1; /* Partition start sector */
annieluo2	0:d6c9b09b4042	4207	tbl[3] = 0; /* Partition start cylinder */
annieluo2	0:d6c9b09b4042	4208	tbl[4] = sys; /* System type */
annieluo2	0:d6c9b09b4042	4209	tbl[5] = 254; /* Partition end head */
annieluo2	0:d6c9b09b4042	4210	n = (b_vol + n_vol) / 63 / 255;
annieluo2	0:d6c9b09b4042	4211	tbl[6] = (BYTE)(n >> 2 \| 63); /* Partition end sector */
annieluo2	0:d6c9b09b4042	4212	tbl[7] = (BYTE)n; /* End cylinder */
annieluo2	0:d6c9b09b4042	4213	ST_DWORD(tbl + 8, 63); /* Partition start in LBA */
annieluo2	0:d6c9b09b4042	4214	ST_DWORD(tbl + 12, n_vol); /* Partition size in LBA */
annieluo2	0:d6c9b09b4042	4215	ST_WORD(fs->win + BS_55AA, 0xAA55); /* MBR signature */
annieluo2	0:d6c9b09b4042	4216	if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR */
annieluo2	0:d6c9b09b4042	4217	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4218	md = 0xF8;
annieluo2	0:d6c9b09b4042	4219	}
annieluo2	0:d6c9b09b4042	4220	}
annieluo2	0:d6c9b09b4042	4221
annieluo2	0:d6c9b09b4042	4222	/* Create BPB in the VBR */
annieluo2	0:d6c9b09b4042	4223	tbl = fs->win; /* Clear sector */
annieluo2	0:d6c9b09b4042	4224	mem_set(tbl, 0, SS(fs));
annieluo2	0:d6c9b09b4042	4225	mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
annieluo2	0:d6c9b09b4042	4226	i = SS(fs); /* Sector size */
annieluo2	0:d6c9b09b4042	4227	ST_WORD(tbl + BPB_BytsPerSec, i);
annieluo2	0:d6c9b09b4042	4228	tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
annieluo2	0:d6c9b09b4042	4229	ST_WORD(tbl + BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
annieluo2	0:d6c9b09b4042	4230	tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
annieluo2	0:d6c9b09b4042	4231	i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of root directory entries */
annieluo2	0:d6c9b09b4042	4232	ST_WORD(tbl + BPB_RootEntCnt, i);
annieluo2	0:d6c9b09b4042	4233	if (n_vol < 0x10000) { /* Number of total sectors */
annieluo2	0:d6c9b09b4042	4234	ST_WORD(tbl + BPB_TotSec16, n_vol);
annieluo2	0:d6c9b09b4042	4235	} else {
annieluo2	0:d6c9b09b4042	4236	ST_DWORD(tbl + BPB_TotSec32, n_vol);
annieluo2	0:d6c9b09b4042	4237	}
annieluo2	0:d6c9b09b4042	4238	tbl[BPB_Media] = md; /* Media descriptor */
annieluo2	0:d6c9b09b4042	4239	ST_WORD(tbl + BPB_SecPerTrk, 63); /* Number of sectors per track */
annieluo2	0:d6c9b09b4042	4240	ST_WORD(tbl + BPB_NumHeads, 255); /* Number of heads */
annieluo2	0:d6c9b09b4042	4241	ST_DWORD(tbl + BPB_HiddSec, b_vol); /* Hidden sectors */
annieluo2	0:d6c9b09b4042	4242	n = GET_FATTIME(); /* Use current time as VSN */
annieluo2	0:d6c9b09b4042	4243	if (fmt == FS_FAT32) {
annieluo2	0:d6c9b09b4042	4244	ST_DWORD(tbl + BS_VolID32, n); /* VSN */
annieluo2	0:d6c9b09b4042	4245	ST_DWORD(tbl + BPB_FATSz32, n_fat); /* Number of sectors per FAT */
annieluo2	0:d6c9b09b4042	4246	ST_DWORD(tbl + BPB_RootClus, 2); /* Root directory start cluster (2) */
annieluo2	0:d6c9b09b4042	4247	ST_WORD(tbl + BPB_FSInfo, 1); /* FSINFO record offset (VBR + 1) */
annieluo2	0:d6c9b09b4042	4248	ST_WORD(tbl + BPB_BkBootSec, 6); /* Backup boot record offset (VBR + 6) */
annieluo2	0:d6c9b09b4042	4249	tbl[BS_DrvNum32] = 0x80; /* Drive number */
annieluo2	0:d6c9b09b4042	4250	tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
annieluo2	0:d6c9b09b4042	4251	mem_cpy(tbl + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
annieluo2	0:d6c9b09b4042	4252	} else {
annieluo2	0:d6c9b09b4042	4253	ST_DWORD(tbl + BS_VolID, n); /* VSN */
annieluo2	0:d6c9b09b4042	4254	ST_WORD(tbl + BPB_FATSz16, n_fat); /* Number of sectors per FAT */
annieluo2	0:d6c9b09b4042	4255	tbl[BS_DrvNum] = 0x80; /* Drive number */
annieluo2	0:d6c9b09b4042	4256	tbl[BS_BootSig] = 0x29; /* Extended boot signature */
annieluo2	0:d6c9b09b4042	4257	mem_cpy(tbl + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
annieluo2	0:d6c9b09b4042	4258	}
annieluo2	0:d6c9b09b4042	4259	ST_WORD(tbl + BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
annieluo2	0:d6c9b09b4042	4260	if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
annieluo2	0:d6c9b09b4042	4261	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4262	if (fmt == FS_FAT32) /* Write it to the backup VBR if needed (VBR + 6) */
annieluo2	0:d6c9b09b4042	4263	disk_write(pdrv, tbl, b_vol + 6, 1);
annieluo2	0:d6c9b09b4042	4264
annieluo2	0:d6c9b09b4042	4265	/* Initialize FAT area */
annieluo2	0:d6c9b09b4042	4266	wsect = b_fat;
annieluo2	0:d6c9b09b4042	4267	for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
annieluo2	0:d6c9b09b4042	4268	mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
annieluo2	0:d6c9b09b4042	4269	n = md; /* Media descriptor byte */
annieluo2	0:d6c9b09b4042	4270	if (fmt != FS_FAT32) {
annieluo2	0:d6c9b09b4042	4271	n \|= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
annieluo2	0:d6c9b09b4042	4272	ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT12/16) */
annieluo2	0:d6c9b09b4042	4273	} else {
annieluo2	0:d6c9b09b4042	4274	n \|= 0xFFFFFF00;
annieluo2	0:d6c9b09b4042	4275	ST_DWORD(tbl + 0, n); /* Reserve cluster #0-1 (FAT32) */
annieluo2	0:d6c9b09b4042	4276	ST_DWORD(tbl + 4, 0xFFFFFFFF);
annieluo2	0:d6c9b09b4042	4277	ST_DWORD(tbl + 8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */
annieluo2	0:d6c9b09b4042	4278	}
annieluo2	0:d6c9b09b4042	4279	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	4280	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4281	mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
annieluo2	0:d6c9b09b4042	4282	for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
annieluo2	0:d6c9b09b4042	4283	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	4284	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4285	}
annieluo2	0:d6c9b09b4042	4286	}
annieluo2	0:d6c9b09b4042	4287
annieluo2	0:d6c9b09b4042	4288	/* Initialize root directory */
annieluo2	0:d6c9b09b4042	4289	i = (fmt == FS_FAT32) ? au : (UINT)n_dir;
annieluo2	0:d6c9b09b4042	4290	do {
annieluo2	0:d6c9b09b4042	4291	if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
annieluo2	0:d6c9b09b4042	4292	return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4293	} while (--i);
annieluo2	0:d6c9b09b4042	4294
annieluo2	0:d6c9b09b4042	4295	#if _USE_TRIM /* Erase data area if needed */
annieluo2	0:d6c9b09b4042	4296	{
annieluo2	0:d6c9b09b4042	4297	eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
annieluo2	0:d6c9b09b4042	4298	disk_ioctl(pdrv, CTRL_TRIM, eb);
annieluo2	0:d6c9b09b4042	4299	}
annieluo2	0:d6c9b09b4042	4300	#endif
annieluo2	0:d6c9b09b4042	4301
annieluo2	0:d6c9b09b4042	4302	/* Create FSINFO if needed */
annieluo2	0:d6c9b09b4042	4303	if (fmt == FS_FAT32) {
annieluo2	0:d6c9b09b4042	4304	ST_DWORD(tbl + FSI_LeadSig, 0x41615252);
annieluo2	0:d6c9b09b4042	4305	ST_DWORD(tbl + FSI_StrucSig, 0x61417272);
annieluo2	0:d6c9b09b4042	4306	ST_DWORD(tbl + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
annieluo2	0:d6c9b09b4042	4307	ST_DWORD(tbl + FSI_Nxt_Free, 2); /* Last allocated cluster# */
annieluo2	0:d6c9b09b4042	4308	ST_WORD(tbl + BS_55AA, 0xAA55);
annieluo2	0:d6c9b09b4042	4309	disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR + 1) */
annieluo2	0:d6c9b09b4042	4310	disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR + 7) */
annieluo2	0:d6c9b09b4042	4311	}
annieluo2	0:d6c9b09b4042	4312
annieluo2	0:d6c9b09b4042	4313	return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4314	}
annieluo2	0:d6c9b09b4042	4315
annieluo2	0:d6c9b09b4042	4316
annieluo2	0:d6c9b09b4042	4317
annieluo2	0:d6c9b09b4042	4318	#if _MULTI_PARTITION
annieluo2	0:d6c9b09b4042	4319	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4320	/* Create partition table on the physical drive */
annieluo2	0:d6c9b09b4042	4321	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4322
annieluo2	0:d6c9b09b4042	4323	FRESULT f_fdisk (
annieluo2	0:d6c9b09b4042	4324	BYTE pdrv, /* Physical drive number */
annieluo2	0:d6c9b09b4042	4325	const DWORD szt[], /* Pointer to the size table for each partitions */
annieluo2	0:d6c9b09b4042	4326	void* work /* Pointer to the working buffer */
annieluo2	0:d6c9b09b4042	4327	)
annieluo2	0:d6c9b09b4042	4328	{
annieluo2	0:d6c9b09b4042	4329	UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
annieluo2	0:d6c9b09b4042	4330	BYTE s_hd, e_hd, p, buf = (BYTE*)work;
annieluo2	0:d6c9b09b4042	4331	DSTATUS stat;
annieluo2	0:d6c9b09b4042	4332	DWORD sz_disk, sz_part, s_part;
annieluo2	0:d6c9b09b4042	4333
annieluo2	0:d6c9b09b4042	4334
annieluo2	0:d6c9b09b4042	4335	stat = disk_initialize(pdrv);
annieluo2	0:d6c9b09b4042	4336	if (stat & STA_NOINIT) return FR_NOT_READY;
annieluo2	0:d6c9b09b4042	4337	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
annieluo2	0:d6c9b09b4042	4338	if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
annieluo2	0:d6c9b09b4042	4339
annieluo2	0:d6c9b09b4042	4340	/* Determine CHS in the table regardless of the drive geometry */
annieluo2	0:d6c9b09b4042	4341	for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
annieluo2	0:d6c9b09b4042	4342	if (n == 256) n--;
annieluo2	0:d6c9b09b4042	4343	e_hd = n - 1;
annieluo2	0:d6c9b09b4042	4344	sz_cyl = 63 * n;
annieluo2	0:d6c9b09b4042	4345	tot_cyl = sz_disk / sz_cyl;
annieluo2	0:d6c9b09b4042	4346
annieluo2	0:d6c9b09b4042	4347	/* Create partition table */
annieluo2	0:d6c9b09b4042	4348	mem_set(buf, 0, _MAX_SS);
annieluo2	0:d6c9b09b4042	4349	p = buf + MBR_Table; b_cyl = 0;
annieluo2	0:d6c9b09b4042	4350	for (i = 0; i < 4; i++, p += SZ_PTE) {
annieluo2	0:d6c9b09b4042	4351	p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
annieluo2	0:d6c9b09b4042	4352	if (!p_cyl) continue;
annieluo2	0:d6c9b09b4042	4353	s_part = (DWORD)sz_cyl * b_cyl;
annieluo2	0:d6c9b09b4042	4354	sz_part = (DWORD)sz_cyl * p_cyl;
annieluo2	0:d6c9b09b4042	4355	if (i == 0) { /* Exclude first track of cylinder 0 */
annieluo2	0:d6c9b09b4042	4356	s_hd = 1;
annieluo2	0:d6c9b09b4042	4357	s_part += 63; sz_part -= 63;
annieluo2	0:d6c9b09b4042	4358	} else {
annieluo2	0:d6c9b09b4042	4359	s_hd = 0;
annieluo2	0:d6c9b09b4042	4360	}
annieluo2	0:d6c9b09b4042	4361	e_cyl = b_cyl + p_cyl - 1;
annieluo2	0:d6c9b09b4042	4362	if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
annieluo2	0:d6c9b09b4042	4363
annieluo2	0:d6c9b09b4042	4364	/* Set partition table */
annieluo2	0:d6c9b09b4042	4365	p[1] = s_hd; /* Start head */
annieluo2	0:d6c9b09b4042	4366	p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
annieluo2	0:d6c9b09b4042	4367	p[3] = (BYTE)b_cyl; /* Start cylinder */
annieluo2	0:d6c9b09b4042	4368	p[4] = 0x06; /* System type (temporary setting) */
annieluo2	0:d6c9b09b4042	4369	p[5] = e_hd; /* End head */
annieluo2	0:d6c9b09b4042	4370	p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
annieluo2	0:d6c9b09b4042	4371	p[7] = (BYTE)e_cyl; /* End cylinder */
annieluo2	0:d6c9b09b4042	4372	ST_DWORD(p + 8, s_part); /* Start sector in LBA */
annieluo2	0:d6c9b09b4042	4373	ST_DWORD(p + 12, sz_part); /* Partition size */
annieluo2	0:d6c9b09b4042	4374
annieluo2	0:d6c9b09b4042	4375	/* Next partition */
annieluo2	0:d6c9b09b4042	4376	b_cyl += p_cyl;
annieluo2	0:d6c9b09b4042	4377	}
annieluo2	0:d6c9b09b4042	4378	ST_WORD(p, 0xAA55);
annieluo2	0:d6c9b09b4042	4379
annieluo2	0:d6c9b09b4042	4380	/* Write it to the MBR */
annieluo2	0:d6c9b09b4042	4381	return (disk_write(pdrv, buf, 0, 1) != RES_OK \|\| disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
annieluo2	0:d6c9b09b4042	4382	}
annieluo2	0:d6c9b09b4042	4383
annieluo2	0:d6c9b09b4042	4384
annieluo2	0:d6c9b09b4042	4385	#endif /* _MULTI_PARTITION */
annieluo2	0:d6c9b09b4042	4386	#endif /* _USE_MKFS && !_FS_READONLY */
annieluo2	0:d6c9b09b4042	4387
annieluo2	0:d6c9b09b4042	4388
annieluo2	0:d6c9b09b4042	4389
annieluo2	0:d6c9b09b4042	4390
annieluo2	0:d6c9b09b4042	4391	#if _USE_STRFUNC
annieluo2	0:d6c9b09b4042	4392	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4393	/* Get a string from the file */
annieluo2	0:d6c9b09b4042	4394	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4395
annieluo2	0:d6c9b09b4042	4396	TCHAR* f_gets (
annieluo2	0:d6c9b09b4042	4397	TCHAR* buff, /* Pointer to the string buffer to read */
annieluo2	0:d6c9b09b4042	4398	int len, /* Size of string buffer (characters) */
annieluo2	0:d6c9b09b4042	4399	FIL* fp /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	4400	)
annieluo2	0:d6c9b09b4042	4401	{
annieluo2	0:d6c9b09b4042	4402	int n = 0;
annieluo2	0:d6c9b09b4042	4403	TCHAR c, *p = buff;
annieluo2	0:d6c9b09b4042	4404	BYTE s[2];
annieluo2	0:d6c9b09b4042	4405	UINT rc;
annieluo2	0:d6c9b09b4042	4406
annieluo2	0:d6c9b09b4042	4407
annieluo2	0:d6c9b09b4042	4408	while (n < len - 1) { /* Read characters until buffer gets filled */
annieluo2	0:d6c9b09b4042	4409	#if _USE_LFN && _LFN_UNICODE
annieluo2	0:d6c9b09b4042	4410	#if _STRF_ENCODE == 3 /* Read a character in UTF-8 */
annieluo2	0:d6c9b09b4042	4411	f_read(fp, s, 1, &rc);
annieluo2	0:d6c9b09b4042	4412	if (rc != 1) break;
annieluo2	0:d6c9b09b4042	4413	c = s[0];
annieluo2	0:d6c9b09b4042	4414	if (c >= 0x80) {
annieluo2	0:d6c9b09b4042	4415	if (c < 0xC0) continue; /* Skip stray trailer */
annieluo2	0:d6c9b09b4042	4416	if (c < 0xE0) { /* Two-byte sequence */
annieluo2	0:d6c9b09b4042	4417	f_read(fp, s, 1, &rc);
annieluo2	0:d6c9b09b4042	4418	if (rc != 1) break;
annieluo2	0:d6c9b09b4042	4419	c = (c & 0x1F) << 6 \| (s[0] & 0x3F);
annieluo2	0:d6c9b09b4042	4420	if (c < 0x80) c = '?';
annieluo2	0:d6c9b09b4042	4421	} else {
annieluo2	0:d6c9b09b4042	4422	if (c < 0xF0) { /* Three-byte sequence */
annieluo2	0:d6c9b09b4042	4423	f_read(fp, s, 2, &rc);
annieluo2	0:d6c9b09b4042	4424	if (rc != 2) break;
annieluo2	0:d6c9b09b4042	4425	c = c << 12 \| (s[0] & 0x3F) << 6 \| (s[1] & 0x3F);
annieluo2	0:d6c9b09b4042	4426	if (c < 0x800) c = '?';
annieluo2	0:d6c9b09b4042	4427	} else { /* Reject four-byte sequence */
annieluo2	0:d6c9b09b4042	4428	c = '?';
annieluo2	0:d6c9b09b4042	4429	}
annieluo2	0:d6c9b09b4042	4430	}
annieluo2	0:d6c9b09b4042	4431	}
annieluo2	0:d6c9b09b4042	4432	#elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */
annieluo2	0:d6c9b09b4042	4433	f_read(fp, s, 2, &rc);
annieluo2	0:d6c9b09b4042	4434	if (rc != 2) break;
annieluo2	0:d6c9b09b4042	4435	c = s[1] + (s[0] << 8);
annieluo2	0:d6c9b09b4042	4436	#elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */
annieluo2	0:d6c9b09b4042	4437	f_read(fp, s, 2, &rc);
annieluo2	0:d6c9b09b4042	4438	if (rc != 2) break;
annieluo2	0:d6c9b09b4042	4439	c = s[0] + (s[1] << 8);
annieluo2	0:d6c9b09b4042	4440	#else /* Read a character in ANSI/OEM */
annieluo2	0:d6c9b09b4042	4441	f_read(fp, s, 1, &rc);
annieluo2	0:d6c9b09b4042	4442	if (rc != 1) break;
annieluo2	0:d6c9b09b4042	4443	c = s[0];
annieluo2	0:d6c9b09b4042	4444	if (IsDBCS1(c)) {
annieluo2	0:d6c9b09b4042	4445	f_read(fp, s, 1, &rc);
annieluo2	0:d6c9b09b4042	4446	if (rc != 1) break;
annieluo2	0:d6c9b09b4042	4447	c = (c << 8) + s[0];
annieluo2	0:d6c9b09b4042	4448	}
annieluo2	0:d6c9b09b4042	4449	c = ff_convert(c, 1); /* OEM -> Unicode */
annieluo2	0:d6c9b09b4042	4450	if (!c) c = '?';
annieluo2	0:d6c9b09b4042	4451	#endif
annieluo2	0:d6c9b09b4042	4452	#else /* Read a character without conversion */
annieluo2	0:d6c9b09b4042	4453	f_read(fp, s, 1, &rc);
annieluo2	0:d6c9b09b4042	4454	if (rc != 1) break;
annieluo2	0:d6c9b09b4042	4455	c = s[0];
annieluo2	0:d6c9b09b4042	4456	#endif
annieluo2	0:d6c9b09b4042	4457	if (_USE_STRFUNC == 2 && c == '\r') continue; /* Strip '\r' */
annieluo2	0:d6c9b09b4042	4458	*p++ = c;
annieluo2	0:d6c9b09b4042	4459	n++;
annieluo2	0:d6c9b09b4042	4460	if (c == '\n') break; /* Break on EOL */
annieluo2	0:d6c9b09b4042	4461	}
annieluo2	0:d6c9b09b4042	4462	*p = 0;
annieluo2	0:d6c9b09b4042	4463	return n ? buff : 0; /* When no data read (eof or error), return with error. */
annieluo2	0:d6c9b09b4042	4464	}
annieluo2	0:d6c9b09b4042	4465
annieluo2	0:d6c9b09b4042	4466
annieluo2	0:d6c9b09b4042	4467
annieluo2	0:d6c9b09b4042	4468
annieluo2	0:d6c9b09b4042	4469	#if !_FS_READONLY
annieluo2	0:d6c9b09b4042	4470	#include <stdarg.h>
annieluo2	0:d6c9b09b4042	4471	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4472	/* Put a character to the file */
annieluo2	0:d6c9b09b4042	4473	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4474
annieluo2	0:d6c9b09b4042	4475	typedef struct {
annieluo2	0:d6c9b09b4042	4476	FIL* fp;
annieluo2	0:d6c9b09b4042	4477	int idx, nchr;
annieluo2	0:d6c9b09b4042	4478	BYTE buf[64];
annieluo2	0:d6c9b09b4042	4479	} putbuff;
annieluo2	0:d6c9b09b4042	4480
annieluo2	0:d6c9b09b4042	4481
annieluo2	0:d6c9b09b4042	4482	static
annieluo2	0:d6c9b09b4042	4483	void putc_bfd (
annieluo2	0:d6c9b09b4042	4484	putbuff* pb,
annieluo2	0:d6c9b09b4042	4485	TCHAR c
annieluo2	0:d6c9b09b4042	4486	)
annieluo2	0:d6c9b09b4042	4487	{
annieluo2	0:d6c9b09b4042	4488	UINT bw;
annieluo2	0:d6c9b09b4042	4489	int i;
annieluo2	0:d6c9b09b4042	4490
annieluo2	0:d6c9b09b4042	4491
annieluo2	0:d6c9b09b4042	4492	if (_USE_STRFUNC == 2 && c == '\n') /* LF -> CRLF conversion */
annieluo2	0:d6c9b09b4042	4493	putc_bfd(pb, '\r');
annieluo2	0:d6c9b09b4042	4494
annieluo2	0:d6c9b09b4042	4495	i = pb->idx; /* Buffer write index (-1:error) */
annieluo2	0:d6c9b09b4042	4496	if (i < 0) return;
annieluo2	0:d6c9b09b4042	4497
annieluo2	0:d6c9b09b4042	4498	#if _USE_LFN && _LFN_UNICODE
annieluo2	0:d6c9b09b4042	4499	#if _STRF_ENCODE == 3 /* Write a character in UTF-8 */
annieluo2	0:d6c9b09b4042	4500	if (c < 0x80) { /* 7-bit */
annieluo2	0:d6c9b09b4042	4501	pb->buf[i++] = (BYTE)c;
annieluo2	0:d6c9b09b4042	4502	} else {
annieluo2	0:d6c9b09b4042	4503	if (c < 0x800) { /* 11-bit */
annieluo2	0:d6c9b09b4042	4504	pb->buf[i++] = (BYTE)(0xC0 \| c >> 6);
annieluo2	0:d6c9b09b4042	4505	} else { /* 16-bit */
annieluo2	0:d6c9b09b4042	4506	pb->buf[i++] = (BYTE)(0xE0 \| c >> 12);
annieluo2	0:d6c9b09b4042	4507	pb->buf[i++] = (BYTE)(0x80 \| (c >> 6 & 0x3F));
annieluo2	0:d6c9b09b4042	4508	}
annieluo2	0:d6c9b09b4042	4509	pb->buf[i++] = (BYTE)(0x80 \| (c & 0x3F));
annieluo2	0:d6c9b09b4042	4510	}
annieluo2	0:d6c9b09b4042	4511	#elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */
annieluo2	0:d6c9b09b4042	4512	pb->buf[i++] = (BYTE)(c >> 8);
annieluo2	0:d6c9b09b4042	4513	pb->buf[i++] = (BYTE)c;
annieluo2	0:d6c9b09b4042	4514	#elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */
annieluo2	0:d6c9b09b4042	4515	pb->buf[i++] = (BYTE)c;
annieluo2	0:d6c9b09b4042	4516	pb->buf[i++] = (BYTE)(c >> 8);
annieluo2	0:d6c9b09b4042	4517	#else /* Write a character in ANSI/OEM */
annieluo2	0:d6c9b09b4042	4518	c = ff_convert(c, 0); /* Unicode -> OEM */
annieluo2	0:d6c9b09b4042	4519	if (!c) c = '?';
annieluo2	0:d6c9b09b4042	4520	if (c >= 0x100)
annieluo2	0:d6c9b09b4042	4521	pb->buf[i++] = (BYTE)(c >> 8);
annieluo2	0:d6c9b09b4042	4522	pb->buf[i++] = (BYTE)c;
annieluo2	0:d6c9b09b4042	4523	#endif
annieluo2	0:d6c9b09b4042	4524	#else /* Write a character without conversion */
annieluo2	0:d6c9b09b4042	4525	pb->buf[i++] = (BYTE)c;
annieluo2	0:d6c9b09b4042	4526	#endif
annieluo2	0:d6c9b09b4042	4527
annieluo2	0:d6c9b09b4042	4528	if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */
annieluo2	0:d6c9b09b4042	4529	f_write(pb->fp, pb->buf, (UINT)i, &bw);
annieluo2	0:d6c9b09b4042	4530	i = (bw == (UINT)i) ? 0 : -1;
annieluo2	0:d6c9b09b4042	4531	}
annieluo2	0:d6c9b09b4042	4532	pb->idx = i;
annieluo2	0:d6c9b09b4042	4533	pb->nchr++;
annieluo2	0:d6c9b09b4042	4534	}
annieluo2	0:d6c9b09b4042	4535
annieluo2	0:d6c9b09b4042	4536
annieluo2	0:d6c9b09b4042	4537
annieluo2	0:d6c9b09b4042	4538	int f_putc (
annieluo2	0:d6c9b09b4042	4539	TCHAR c, /* A character to be output */
annieluo2	0:d6c9b09b4042	4540	FIL* fp /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	4541	)
annieluo2	0:d6c9b09b4042	4542	{
annieluo2	0:d6c9b09b4042	4543	putbuff pb;
annieluo2	0:d6c9b09b4042	4544	UINT nw;
annieluo2	0:d6c9b09b4042	4545
annieluo2	0:d6c9b09b4042	4546
annieluo2	0:d6c9b09b4042	4547	pb.fp = fp; /* Initialize output buffer */
annieluo2	0:d6c9b09b4042	4548	pb.nchr = pb.idx = 0;
annieluo2	0:d6c9b09b4042	4549
annieluo2	0:d6c9b09b4042	4550	putc_bfd(&pb, c); /* Put a character */
annieluo2	0:d6c9b09b4042	4551
annieluo2	0:d6c9b09b4042	4552	if ( pb.idx >= 0 /* Flush buffered characters to the file */
annieluo2	0:d6c9b09b4042	4553	&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
annieluo2	0:d6c9b09b4042	4554	&& (UINT)pb.idx == nw) return pb.nchr;
annieluo2	0:d6c9b09b4042	4555	return EOF;
annieluo2	0:d6c9b09b4042	4556	}
annieluo2	0:d6c9b09b4042	4557
annieluo2	0:d6c9b09b4042	4558
annieluo2	0:d6c9b09b4042	4559
annieluo2	0:d6c9b09b4042	4560
annieluo2	0:d6c9b09b4042	4561	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4562	/* Put a string to the file */
annieluo2	0:d6c9b09b4042	4563	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4564
annieluo2	0:d6c9b09b4042	4565	int f_puts (
annieluo2	0:d6c9b09b4042	4566	const TCHAR* str, /* Pointer to the string to be output */
annieluo2	0:d6c9b09b4042	4567	FIL* fp /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	4568	)
annieluo2	0:d6c9b09b4042	4569	{
annieluo2	0:d6c9b09b4042	4570	putbuff pb;
annieluo2	0:d6c9b09b4042	4571	UINT nw;
annieluo2	0:d6c9b09b4042	4572
annieluo2	0:d6c9b09b4042	4573
annieluo2	0:d6c9b09b4042	4574	pb.fp = fp; /* Initialize output buffer */
annieluo2	0:d6c9b09b4042	4575	pb.nchr = pb.idx = 0;
annieluo2	0:d6c9b09b4042	4576
annieluo2	0:d6c9b09b4042	4577	while (str) / Put the string */
annieluo2	0:d6c9b09b4042	4578	putc_bfd(&pb, *str++);
annieluo2	0:d6c9b09b4042	4579
annieluo2	0:d6c9b09b4042	4580	if ( pb.idx >= 0 /* Flush buffered characters to the file */
annieluo2	0:d6c9b09b4042	4581	&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
annieluo2	0:d6c9b09b4042	4582	&& (UINT)pb.idx == nw) return pb.nchr;
annieluo2	0:d6c9b09b4042	4583	return EOF;
annieluo2	0:d6c9b09b4042	4584	}
annieluo2	0:d6c9b09b4042	4585
annieluo2	0:d6c9b09b4042	4586
annieluo2	0:d6c9b09b4042	4587
annieluo2	0:d6c9b09b4042	4588
annieluo2	0:d6c9b09b4042	4589	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4590	/* Put a formatted string to the file */
annieluo2	0:d6c9b09b4042	4591	/-----------------------------------------------------------------------/
annieluo2	0:d6c9b09b4042	4592
annieluo2	0:d6c9b09b4042	4593	int f_printf (
annieluo2	0:d6c9b09b4042	4594	FIL* fp, /* Pointer to the file object */
annieluo2	0:d6c9b09b4042	4595	const TCHAR* fmt, /* Pointer to the format string */
annieluo2	0:d6c9b09b4042	4596	... /* Optional arguments... */
annieluo2	0:d6c9b09b4042	4597	)
annieluo2	0:d6c9b09b4042	4598	{
annieluo2	0:d6c9b09b4042	4599	va_list arp;
annieluo2	0:d6c9b09b4042	4600	BYTE f, r;
annieluo2	0:d6c9b09b4042	4601	UINT nw, i, j, w;
annieluo2	0:d6c9b09b4042	4602	DWORD v;
annieluo2	0:d6c9b09b4042	4603	TCHAR c, d, s[16], *p;
annieluo2	0:d6c9b09b4042	4604	putbuff pb;
annieluo2	0:d6c9b09b4042	4605
annieluo2	0:d6c9b09b4042	4606
annieluo2	0:d6c9b09b4042	4607	pb.fp = fp; /* Initialize output buffer */
annieluo2	0:d6c9b09b4042	4608	pb.nchr = pb.idx = 0;
annieluo2	0:d6c9b09b4042	4609
annieluo2	0:d6c9b09b4042	4610	va_start(arp, fmt);
annieluo2	0:d6c9b09b4042	4611
annieluo2	0:d6c9b09b4042	4612	for (;;) {
annieluo2	0:d6c9b09b4042	4613	c = *fmt++;
annieluo2	0:d6c9b09b4042	4614	if (c == 0) break; /* End of string */
annieluo2	0:d6c9b09b4042	4615	if (c != '%') { /* Non escape character */
annieluo2	0:d6c9b09b4042	4616	putc_bfd(&pb, c);
annieluo2	0:d6c9b09b4042	4617	continue;
annieluo2	0:d6c9b09b4042	4618	}
annieluo2	0:d6c9b09b4042	4619	w = f = 0;
annieluo2	0:d6c9b09b4042	4620	c = *fmt++;
annieluo2	0:d6c9b09b4042	4621	if (c == '0') { /* Flag: '0' padding */
annieluo2	0:d6c9b09b4042	4622	f = 1; c = *fmt++;
annieluo2	0:d6c9b09b4042	4623	} else {
annieluo2	0:d6c9b09b4042	4624	if (c == '-') { /* Flag: left justified */
annieluo2	0:d6c9b09b4042	4625	f = 2; c = *fmt++;
annieluo2	0:d6c9b09b4042	4626	}
annieluo2	0:d6c9b09b4042	4627	}
annieluo2	0:d6c9b09b4042	4628	while (IsDigit(c)) { /* Precision */
annieluo2	0:d6c9b09b4042	4629	w = w * 10 + c - '0';
annieluo2	0:d6c9b09b4042	4630	c = *fmt++;
annieluo2	0:d6c9b09b4042	4631	}
annieluo2	0:d6c9b09b4042	4632	if (c == 'l' \|\| c == 'L') { /* Prefix: Size is long int */
annieluo2	0:d6c9b09b4042	4633	f \|= 4; c = *fmt++;
annieluo2	0:d6c9b09b4042	4634	}
annieluo2	0:d6c9b09b4042	4635	if (!c) break;
annieluo2	0:d6c9b09b4042	4636	d = c;
annieluo2	0:d6c9b09b4042	4637	if (IsLower(d)) d -= 0x20;
annieluo2	0:d6c9b09b4042	4638	switch (d) { /* Type is... */
annieluo2	0:d6c9b09b4042	4639	case 'S' : /* String */
annieluo2	0:d6c9b09b4042	4640	p = va_arg(arp, TCHAR*);
annieluo2	0:d6c9b09b4042	4641	for (j = 0; p[j]; j++) ;
annieluo2	0:d6c9b09b4042	4642	if (!(f & 2)) {
annieluo2	0:d6c9b09b4042	4643	while (j++ < w) putc_bfd(&pb, ' ');
annieluo2	0:d6c9b09b4042	4644	}
annieluo2	0:d6c9b09b4042	4645	while (p) putc_bfd(&pb, p++);
annieluo2	0:d6c9b09b4042	4646	while (j++ < w) putc_bfd(&pb, ' ');
annieluo2	0:d6c9b09b4042	4647	continue;
annieluo2	0:d6c9b09b4042	4648	case 'C' : /* Character */
annieluo2	0:d6c9b09b4042	4649	putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue;
annieluo2	0:d6c9b09b4042	4650	case 'B' : /* Binary */
annieluo2	0:d6c9b09b4042	4651	r = 2; break;
annieluo2	0:d6c9b09b4042	4652	case 'O' : /* Octal */
annieluo2	0:d6c9b09b4042	4653	r = 8; break;
annieluo2	0:d6c9b09b4042	4654	case 'D' : /* Signed decimal */
annieluo2	0:d6c9b09b4042	4655	case 'U' : /* Unsigned decimal */
annieluo2	0:d6c9b09b4042	4656	r = 10; break;
annieluo2	0:d6c9b09b4042	4657	case 'X' : /* Hexdecimal */
annieluo2	0:d6c9b09b4042	4658	r = 16; break;
annieluo2	0:d6c9b09b4042	4659	default: /* Unknown type (pass-through) */
annieluo2	0:d6c9b09b4042	4660	putc_bfd(&pb, c); continue;
annieluo2	0:d6c9b09b4042	4661	}
annieluo2	0:d6c9b09b4042	4662
annieluo2	0:d6c9b09b4042	4663	/* Get an argument and put it in numeral */
annieluo2	0:d6c9b09b4042	4664	v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
annieluo2	0:d6c9b09b4042	4665	if (d == 'D' && (v & 0x80000000)) {
annieluo2	0:d6c9b09b4042	4666	v = 0 - v;
annieluo2	0:d6c9b09b4042	4667	f \|= 8;
annieluo2	0:d6c9b09b4042	4668	}
annieluo2	0:d6c9b09b4042	4669	i = 0;
annieluo2	0:d6c9b09b4042	4670	do {
annieluo2	0:d6c9b09b4042	4671	d = (TCHAR)(v % r); v /= r;
annieluo2	0:d6c9b09b4042	4672	if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
annieluo2	0:d6c9b09b4042	4673	s[i++] = d + '0';
annieluo2	0:d6c9b09b4042	4674	} while (v && i < sizeof s / sizeof s[0]);
annieluo2	0:d6c9b09b4042	4675	if (f & 8) s[i++] = '-';
annieluo2	0:d6c9b09b4042	4676	j = i; d = (f & 1) ? '0' : ' ';
annieluo2	0:d6c9b09b4042	4677	while (!(f & 2) && j++ < w) putc_bfd(&pb, d);
annieluo2	0:d6c9b09b4042	4678	do putc_bfd(&pb, s[--i]); while (i);
annieluo2	0:d6c9b09b4042	4679	while (j++ < w) putc_bfd(&pb, d);
annieluo2	0:d6c9b09b4042	4680	}
annieluo2	0:d6c9b09b4042	4681
annieluo2	0:d6c9b09b4042	4682	va_end(arp);
annieluo2	0:d6c9b09b4042	4683
annieluo2	0:d6c9b09b4042	4684	if ( pb.idx >= 0 /* Flush buffered characters to the file */
annieluo2	0:d6c9b09b4042	4685	&& f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK
annieluo2	0:d6c9b09b4042	4686	&& (UINT)pb.idx == nw) return pb.nchr;
annieluo2	0:d6c9b09b4042	4687	return EOF;
annieluo2	0:d6c9b09b4042	4688	}
annieluo2	0:d6c9b09b4042	4689
annieluo2	0:d6c9b09b4042	4690	#endif /* !_FS_READONLY */
annieluo2	0:d6c9b09b4042	4691	#endif /* _USE_STRFUNC */

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Type:	Program
Created:	04 Dec 2020
Imports:	1
Forks:	0
Commits:	12
Dependents:	0
Dependencies:	1
Followers:	5

FATFileSystem/ChaN/ff.cpp@11:951bbb0385aa, 2020-12-04 (annotated)

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