Import fatfs R0.15

[z180-stamp.git] / fatfs / source / ff.c

/*----------------------------------------------------------------------------/\r
/  FatFs - Generic FAT Filesystem Module  R0.15 w/patch1                      /\r
/-----------------------------------------------------------------------------/\r
/\r
/ Copyright (C) 2022, ChaN, all right reserved.\r
/\r
/ FatFs module is an open source software. Redistribution and use of FatFs in\r
/ source and binary forms, with or without modification, are permitted provided\r
/ that the following condition is met:\r
/\r
/ 1. Redistributions of source code must retain the above copyright notice,\r
/    this condition and the following disclaimer.\r
/\r
/ This software is provided by the copyright holder and contributors "AS IS"\r
/ and any warranties related to this software are DISCLAIMED.\r
/ The copyright owner or contributors be NOT LIABLE for any damages caused\r
/ by use of this software.\r
/\r
/----------------------------------------------------------------------------*/\r
\r
\r
#include <string.h>\r
#include "ff.h"			/* Declarations of FatFs API */\r
#include "diskio.h"		/* Declarations of device I/O functions */\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Module Private Definitions\r
\r
---------------------------------------------------------------------------*/\r
\r
#if FF_DEFINED != 80286	/* Revision ID */\r
#error Wrong include file (ff.h).\r
#endif\r
\r
\r
/* Limits and boundaries */\r
#define MAX_DIR		0x200000		/* Max size of FAT directory */\r
#define MAX_DIR_EX	0x10000000		/* Max size of exFAT directory */\r
#define MAX_FAT12	0xFF5			/* Max FAT12 clusters (differs from specs, but right for real DOS/Windows behavior) */\r
#define MAX_FAT16	0xFFF5			/* Max FAT16 clusters (differs from specs, but right for real DOS/Windows behavior) */\r
#define MAX_FAT32	0x0FFFFFF5		/* Max FAT32 clusters (not specified, practical limit) */\r
#define MAX_EXFAT	0x7FFFFFFD		/* Max exFAT clusters (differs from specs, implementation limit) */\r
\r
\r
/* Character code support macros */\r
#define IsUpper(c)		((c) >= 'A' && (c) <= 'Z')\r
#define IsLower(c)		((c) >= 'a' && (c) <= 'z')\r
#define IsDigit(c)		((c) >= '0' && (c) <= '9')\r
#define IsSeparator(c)	((c) == '/' || (c) == '\\')\r
#define IsTerminator(c)	((UINT)(c) < (FF_USE_LFN ? ' ' : '!'))\r
#define IsSurrogate(c)	((c) >= 0xD800 && (c) <= 0xDFFF)\r
#define IsSurrogateH(c)	((c) >= 0xD800 && (c) <= 0xDBFF)\r
#define IsSurrogateL(c)	((c) >= 0xDC00 && (c) <= 0xDFFF)\r
\r
\r
/* Additional file access control and file status flags for internal use */\r
#define FA_SEEKEND	0x20	/* Seek to end of the file on file open */\r
#define FA_MODIFIED	0x40	/* File has been modified */\r
#define FA_DIRTY	0x80	/* FIL.buf[] needs to be written-back */\r
\r
\r
/* Additional file attribute bits for internal use */\r
#define AM_VOL		0x08	/* Volume label */\r
#define AM_LFN		0x0F	/* LFN entry */\r
#define AM_MASK		0x3F	/* Mask of defined bits in FAT */\r
#define AM_MASKX	0x37	/* Mask of defined bits in exFAT */\r
\r
\r
/* Name status flags in fn[11] */\r
#define NSFLAG		11		/* Index of the name status byte */\r
#define NS_LOSS		0x01	/* Out of 8.3 format */\r
#define NS_LFN		0x02	/* Force to create LFN entry */\r
#define NS_LAST		0x04	/* Last segment */\r
#define NS_BODY		0x08	/* Lower case flag (body) */\r
#define NS_EXT		0x10	/* Lower case flag (ext) */\r
#define NS_DOT		0x20	/* Dot entry */\r
#define NS_NOLFN	0x40	/* Do not find LFN */\r
#define NS_NONAME	0x80	/* Not followed */\r
\r
\r
/* exFAT directory entry types */\r
#define	ET_BITMAP	0x81	/* Allocation bitmap */\r
#define	ET_UPCASE	0x82	/* Up-case table */\r
#define	ET_VLABEL	0x83	/* Volume label */\r
#define	ET_FILEDIR	0x85	/* File and directory */\r
#define	ET_STREAM	0xC0	/* Stream extension */\r
#define	ET_FILENAME	0xC1	/* Name extension */\r
\r
\r
/* FatFs refers the FAT structure as simple byte array instead of structure member\r
/ because the C structure is not binary compatible between different platforms */\r
\r
#define BS_JmpBoot			0		/* x86 jump instruction (3-byte) */\r
#define BS_OEMName			3		/* OEM name (8-byte) */\r
#define BPB_BytsPerSec		11		/* Sector size [byte] (WORD) */\r
#define BPB_SecPerClus		13		/* Cluster size [sector] (BYTE) */\r
#define BPB_RsvdSecCnt		14		/* Size of reserved area [sector] (WORD) */\r
#define BPB_NumFATs			16		/* Number of FATs (BYTE) */\r
#define BPB_RootEntCnt		17		/* Size of root directory area for FAT [entry] (WORD) */\r
#define BPB_TotSec16		19		/* Volume size (16-bit) [sector] (WORD) */\r
#define BPB_Media			21		/* Media descriptor byte (BYTE) */\r
#define BPB_FATSz16			22		/* FAT size (16-bit) [sector] (WORD) */\r
#define BPB_SecPerTrk		24		/* Number of sectors per track for int13h [sector] (WORD) */\r
#define BPB_NumHeads		26		/* Number of heads for int13h (WORD) */\r
#define BPB_HiddSec			28		/* Volume offset from top of the drive (DWORD) */\r
#define BPB_TotSec32		32		/* Volume size (32-bit) [sector] (DWORD) */\r
#define BS_DrvNum			36		/* Physical drive number for int13h (BYTE) */\r
#define BS_NTres			37		/* WindowsNT error flag (BYTE) */\r
#define BS_BootSig			38		/* Extended boot signature (BYTE) */\r
#define BS_VolID			39		/* Volume serial number (DWORD) */\r
#define BS_VolLab			43		/* Volume label string (8-byte) */\r
#define BS_FilSysType		54		/* Filesystem type string (8-byte) */\r
#define BS_BootCode			62		/* Boot code (448-byte) */\r
#define BS_55AA				510		/* Signature word (WORD) */\r
\r
#define BPB_FATSz32			36		/* FAT32: FAT size [sector] (DWORD) */\r
#define BPB_ExtFlags32		40		/* FAT32: Extended flags (WORD) */\r
#define BPB_FSVer32			42		/* FAT32: Filesystem version (WORD) */\r
#define BPB_RootClus32		44		/* FAT32: Root directory cluster (DWORD) */\r
#define BPB_FSInfo32		48		/* FAT32: Offset of FSINFO sector (WORD) */\r
#define BPB_BkBootSec32		50		/* FAT32: Offset of backup boot sector (WORD) */\r
#define BS_DrvNum32			64		/* FAT32: Physical drive number for int13h (BYTE) */\r
#define BS_NTres32			65		/* FAT32: Error flag (BYTE) */\r
#define BS_BootSig32		66		/* FAT32: Extended boot signature (BYTE) */\r
#define BS_VolID32			67		/* FAT32: Volume serial number (DWORD) */\r
#define BS_VolLab32			71		/* FAT32: Volume label string (8-byte) */\r
#define BS_FilSysType32		82		/* FAT32: Filesystem type string (8-byte) */\r
#define BS_BootCode32		90		/* FAT32: Boot code (420-byte) */\r
\r
#define BPB_ZeroedEx		11		/* exFAT: MBZ field (53-byte) */\r
#define BPB_VolOfsEx		64		/* exFAT: Volume offset from top of the drive [sector] (QWORD) */\r
#define BPB_TotSecEx		72		/* exFAT: Volume size [sector] (QWORD) */\r
#define BPB_FatOfsEx		80		/* exFAT: FAT offset from top of the volume [sector] (DWORD) */\r
#define BPB_FatSzEx			84		/* exFAT: FAT size [sector] (DWORD) */\r
#define BPB_DataOfsEx		88		/* exFAT: Data offset from top of the volume [sector] (DWORD) */\r
#define BPB_NumClusEx		92		/* exFAT: Number of clusters (DWORD) */\r
#define BPB_RootClusEx		96		/* exFAT: Root directory start cluster (DWORD) */\r
#define BPB_VolIDEx			100		/* exFAT: Volume serial number (DWORD) */\r
#define BPB_FSVerEx			104		/* exFAT: Filesystem version (WORD) */\r
#define BPB_VolFlagEx		106		/* exFAT: Volume flags (WORD) */\r
#define BPB_BytsPerSecEx	108		/* exFAT: Log2 of sector size in unit of byte (BYTE) */\r
#define BPB_SecPerClusEx	109		/* exFAT: Log2 of cluster size in unit of sector (BYTE) */\r
#define BPB_NumFATsEx		110		/* exFAT: Number of FATs (BYTE) */\r
#define BPB_DrvNumEx		111		/* exFAT: Physical drive number for int13h (BYTE) */\r
#define BPB_PercInUseEx		112		/* exFAT: Percent in use (BYTE) */\r
#define BPB_RsvdEx			113		/* exFAT: Reserved (7-byte) */\r
#define BS_BootCodeEx		120		/* exFAT: Boot code (390-byte) */\r
\r
#define DIR_Name			0		/* Short file name (11-byte) */\r
#define DIR_Attr			11		/* Attribute (BYTE) */\r
#define DIR_NTres			12		/* Lower case flag (BYTE) */\r
#define DIR_CrtTime10		13		/* Created time sub-second (BYTE) */\r
#define DIR_CrtTime			14		/* Created time (DWORD) */\r
#define DIR_LstAccDate		18		/* Last accessed date (WORD) */\r
#define DIR_FstClusHI		20		/* Higher 16-bit of first cluster (WORD) */\r
#define DIR_ModTime			22		/* Modified time (DWORD) */\r
#define DIR_FstClusLO		26		/* Lower 16-bit of first cluster (WORD) */\r
#define DIR_FileSize		28		/* File size (DWORD) */\r
#define LDIR_Ord			0		/* LFN: LFN order and LLE flag (BYTE) */\r
#define LDIR_Attr			11		/* LFN: LFN attribute (BYTE) */\r
#define LDIR_Type			12		/* LFN: Entry type (BYTE) */\r
#define LDIR_Chksum			13		/* LFN: Checksum of the SFN (BYTE) */\r
#define LDIR_FstClusLO		26		/* LFN: MBZ field (WORD) */\r
#define XDIR_Type			0		/* exFAT: Type of exFAT directory entry (BYTE) */\r
#define XDIR_NumLabel		1		/* exFAT: Number of volume label characters (BYTE) */\r
#define XDIR_Label			2		/* exFAT: Volume label (11-WORD) */\r
#define XDIR_CaseSum		4		/* exFAT: Sum of case conversion table (DWORD) */\r
#define XDIR_NumSec			1		/* exFAT: Number of secondary entries (BYTE) */\r
#define XDIR_SetSum			2		/* exFAT: Sum of the set of directory entries (WORD) */\r
#define XDIR_Attr			4		/* exFAT: File attribute (WORD) */\r
#define XDIR_CrtTime		8		/* exFAT: Created time (DWORD) */\r
#define XDIR_ModTime		12		/* exFAT: Modified time (DWORD) */\r
#define XDIR_AccTime		16		/* exFAT: Last accessed time (DWORD) */\r
#define XDIR_CrtTime10		20		/* exFAT: Created time subsecond (BYTE) */\r
#define XDIR_ModTime10		21		/* exFAT: Modified time subsecond (BYTE) */\r
#define XDIR_CrtTZ			22		/* exFAT: Created timezone (BYTE) */\r
#define XDIR_ModTZ			23		/* exFAT: Modified timezone (BYTE) */\r
#define XDIR_AccTZ			24		/* exFAT: Last accessed timezone (BYTE) */\r
#define XDIR_GenFlags		33		/* exFAT: General secondary flags (BYTE) */\r
#define XDIR_NumName		35		/* exFAT: Number of file name characters (BYTE) */\r
#define XDIR_NameHash		36		/* exFAT: Hash of file name (WORD) */\r
#define XDIR_ValidFileSize	40		/* exFAT: Valid file size (QWORD) */\r
#define XDIR_FstClus		52		/* exFAT: First cluster of the file data (DWORD) */\r
#define XDIR_FileSize		56		/* exFAT: File/Directory size (QWORD) */\r
\r
#define SZDIRE				32		/* Size of a directory entry */\r
#define DDEM				0xE5	/* Deleted directory entry mark set to DIR_Name[0] */\r
#define RDDEM				0x05	/* Replacement of the character collides with DDEM */\r
#define LLEF				0x40	/* Last long entry flag in LDIR_Ord */\r
\r
#define FSI_LeadSig			0		/* FAT32 FSI: Leading signature (DWORD) */\r
#define FSI_StrucSig		484		/* FAT32 FSI: Structure signature (DWORD) */\r
#define FSI_Free_Count		488		/* FAT32 FSI: Number of free clusters (DWORD) */\r
#define FSI_Nxt_Free		492		/* FAT32 FSI: Last allocated cluster (DWORD) */\r
\r
#define MBR_Table			446		/* MBR: Offset of partition table in the MBR */\r
#define SZ_PTE				16		/* MBR: Size of a partition table entry */\r
#define PTE_Boot			0		/* MBR PTE: Boot indicator */\r
#define PTE_StHead			1		/* MBR PTE: Start head */\r
#define PTE_StSec			2		/* MBR PTE: Start sector */\r
#define PTE_StCyl			3		/* MBR PTE: Start cylinder */\r
#define PTE_System			4		/* MBR PTE: System ID */\r
#define PTE_EdHead			5		/* MBR PTE: End head */\r
#define PTE_EdSec			6		/* MBR PTE: End sector */\r
#define PTE_EdCyl			7		/* MBR PTE: End cylinder */\r
#define PTE_StLba			8		/* MBR PTE: Start in LBA */\r
#define PTE_SizLba			12		/* MBR PTE: Size in LBA */\r
\r
#define GPTH_Sign			0		/* GPT HDR: Signature (8-byte) */\r
#define GPTH_Rev			8		/* GPT HDR: Revision (DWORD) */\r
#define GPTH_Size			12		/* GPT HDR: Header size (DWORD) */\r
#define GPTH_Bcc			16		/* GPT HDR: Header BCC (DWORD) */\r
#define GPTH_CurLba			24		/* GPT HDR: This header LBA (QWORD) */\r
#define GPTH_BakLba			32		/* GPT HDR: Another header LBA (QWORD) */\r
#define GPTH_FstLba			40		/* GPT HDR: First LBA for partition data (QWORD) */\r
#define GPTH_LstLba			48		/* GPT HDR: Last LBA for partition data (QWORD) */\r
#define GPTH_DskGuid		56		/* GPT HDR: Disk GUID (16-byte) */\r
#define GPTH_PtOfs			72		/* GPT HDR: Partition table LBA (QWORD) */\r
#define GPTH_PtNum			80		/* GPT HDR: Number of table entries (DWORD) */\r
#define GPTH_PteSize		84		/* GPT HDR: Size of table entry (DWORD) */\r
#define GPTH_PtBcc			88		/* GPT HDR: Partition table BCC (DWORD) */\r
#define SZ_GPTE				128		/* GPT PTE: Size of partition table entry */\r
#define GPTE_PtGuid			0		/* GPT PTE: Partition type GUID (16-byte) */\r
#define GPTE_UpGuid			16		/* GPT PTE: Partition unique GUID (16-byte) */\r
#define GPTE_FstLba			32		/* GPT PTE: First LBA of partition (QWORD) */\r
#define GPTE_LstLba			40		/* GPT PTE: Last LBA of partition (QWORD) */\r
#define GPTE_Flags			48		/* GPT PTE: Partition flags (QWORD) */\r
#define GPTE_Name			56		/* GPT PTE: Partition name */\r
\r
\r
/* Post process on fatal error in the file operations */\r
#define ABORT(fs, res)		{ fp->err = (BYTE)(res); LEAVE_FF(fs, res); }\r
\r
\r
/* Re-entrancy related */\r
#if FF_FS_REENTRANT\r
#if FF_USE_LFN == 1\r
#error Static LFN work area cannot be used in thread-safe configuration\r
#endif\r
#define LEAVE_FF(fs, res)	{ unlock_volume(fs, res); return res; }\r
#else\r
#define LEAVE_FF(fs, res)	return res\r
#endif\r
\r
\r
/* Definitions of logical drive - physical location conversion */\r
#if FF_MULTI_PARTITION\r
#define LD2PD(vol) VolToPart[vol].pd	/* Get physical drive number */\r
#define LD2PT(vol) VolToPart[vol].pt	/* Get partition number (0:auto search, 1..:forced partition number) */\r
#else\r
#define LD2PD(vol) (BYTE)(vol)	/* Each logical drive is associated with the same physical drive number */\r
#define LD2PT(vol) 0			/* Auto partition search */\r
#endif\r
\r
\r
/* Definitions of sector size */\r
#if (FF_MAX_SS < FF_MIN_SS) || (FF_MAX_SS != 512 && FF_MAX_SS != 1024 && FF_MAX_SS != 2048 && FF_MAX_SS != 4096) || (FF_MIN_SS != 512 && FF_MIN_SS != 1024 && FF_MIN_SS != 2048 && FF_MIN_SS != 4096)\r
#error Wrong sector size configuration\r
#endif\r
#if FF_MAX_SS == FF_MIN_SS\r
#define SS(fs)	((UINT)FF_MAX_SS)	/* Fixed sector size */\r
#else\r
#define SS(fs)	((fs)->ssize)	/* Variable sector size */\r
#endif\r
\r
\r
/* Timestamp */\r
#if FF_FS_NORTC == 1\r
#if FF_NORTC_YEAR < 1980 || FF_NORTC_YEAR > 2107 || FF_NORTC_MON < 1 || FF_NORTC_MON > 12 || FF_NORTC_MDAY < 1 || FF_NORTC_MDAY > 31\r
#error Invalid FF_FS_NORTC settings\r
#endif\r
#define GET_FATTIME()	((DWORD)(FF_NORTC_YEAR - 1980) << 25 | (DWORD)FF_NORTC_MON << 21 | (DWORD)FF_NORTC_MDAY << 16)\r
#else\r
#define GET_FATTIME()	get_fattime()\r
#endif\r
\r
\r
/* File lock controls */\r
#if FF_FS_LOCK\r
#if FF_FS_READONLY\r
#error FF_FS_LOCK must be 0 at read-only configuration\r
#endif\r
typedef struct {\r
	FATFS* fs;		/* Object ID 1, volume (NULL:blank entry) */\r
	DWORD clu;		/* Object ID 2, containing directory (0:root) */\r
	DWORD ofs;		/* Object ID 3, offset in the directory */\r
	UINT ctr;		/* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */\r
} FILESEM;\r
#endif\r
\r
\r
/* SBCS up-case tables (\x80-\xFF) */\r
#define TBL_CT437  {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
					0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT720  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT737  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \\r
					0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT771  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}\r
#define TBL_CT775  {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \\r
					0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r
					0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT850  {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \\r
					0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \\r
					0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \\r
					0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT852  {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \\r
					0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}\r
#define TBL_CT855  {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \\r
					0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \\r
					0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \\r
					0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \\r
					0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT857  {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \\r
					0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \\r
					0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT860  {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT861  {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \\r
					0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r
					0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT862  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT863  {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \\r
					0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \\r
					0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT864  {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
					0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT865  {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
					0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
					0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT866  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
					0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
#define TBL_CT869  {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
					0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \\r
					0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
					0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
					0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
					0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \\r
					0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \\r
					0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}\r
\r
\r
/* DBCS code range |----- 1st byte -----|  |----------- 2nd byte -----------| */\r
/*                  <------>    <------>    <------>    <------>    <------>  */\r
#define TBL_DC932 {0x81, 0x9F, 0xE0, 0xFC, 0x40, 0x7E, 0x80, 0xFC, 0x00, 0x00}\r
#define TBL_DC936 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0x80, 0xFE, 0x00, 0x00}\r
#define TBL_DC949 {0x81, 0xFE, 0x00, 0x00, 0x41, 0x5A, 0x61, 0x7A, 0x81, 0xFE}\r
#define TBL_DC950 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0xA1, 0xFE, 0x00, 0x00}\r
\r
\r
/* Macros for table definitions */\r
#define MERGE_2STR(a, b) a ## b\r
#define MKCVTBL(hd, cp) MERGE_2STR(hd, cp)\r
\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Module Private Work Area\r
\r
---------------------------------------------------------------------------*/\r
/* Remark: Variables defined here without initial value shall be guaranteed\r
/  zero/null at start-up. If not, the linker option or start-up routine is\r
/  not compliance with C standard. */\r
\r
/*--------------------------------*/\r
/* File/Volume controls           */\r
/*--------------------------------*/\r
\r
#if FF_VOLUMES < 1 || FF_VOLUMES > 10\r
#error Wrong FF_VOLUMES setting\r
#endif\r
static FATFS *FatFs[FF_VOLUMES];	/* Pointer to the filesystem objects (logical drives) */\r
static WORD Fsid;					/* Filesystem mount ID */\r
\r
#if FF_FS_RPATH != 0\r
static BYTE CurrVol;				/* Current drive set by f_chdrive() */\r
#endif\r
\r
#if FF_FS_LOCK != 0\r
static FILESEM Files[FF_FS_LOCK];	/* Open object lock semaphores */\r
#if FF_FS_REENTRANT\r
static BYTE SysLock;				/* System lock flag (0:no mutex, 1:unlocked, 2:locked) */\r
#endif\r
#endif\r
\r
#if FF_STR_VOLUME_ID\r
#ifdef FF_VOLUME_STRS\r
static const char *const VolumeStr[FF_VOLUMES] = {FF_VOLUME_STRS};	/* Pre-defined volume ID */\r
#endif\r
#endif\r
\r
#if FF_LBA64\r
#if FF_MIN_GPT > 0x100000000\r
#error Wrong FF_MIN_GPT setting\r
#endif\r
static const BYTE GUID_MS_Basic[16] = {0xA2,0xA0,0xD0,0xEB,0xE5,0xB9,0x33,0x44,0x87,0xC0,0x68,0xB6,0xB7,0x26,0x99,0xC7};\r
#endif\r
\r
\r
\r
/*--------------------------------*/\r
/* LFN/Directory working buffer   */\r
/*--------------------------------*/\r
\r
#if FF_USE_LFN == 0		/* Non-LFN configuration */\r
#if FF_FS_EXFAT\r
#error LFN must be enabled when enable exFAT\r
#endif\r
#define DEF_NAMBUF\r
#define INIT_NAMBUF(fs)\r
#define FREE_NAMBUF()\r
#define LEAVE_MKFS(res)	return res\r
\r
#else					/* LFN configurations */\r
#if FF_MAX_LFN < 12 || FF_MAX_LFN > 255\r
#error Wrong setting of FF_MAX_LFN\r
#endif\r
#if FF_LFN_BUF < FF_SFN_BUF || FF_SFN_BUF < 12\r
#error Wrong setting of FF_LFN_BUF or FF_SFN_BUF\r
#endif\r
#if FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 3\r
#error Wrong setting of FF_LFN_UNICODE\r
#endif\r
static const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};	/* FAT: Offset of LFN characters in the directory entry */\r
#define MAXDIRB(nc)	((nc + 44U) / 15 * SZDIRE)	/* exFAT: Size of directory entry block scratchpad buffer needed for the name length */\r
\r
#if FF_USE_LFN == 1		/* LFN enabled with static working buffer */\r
#if FF_FS_EXFAT\r
static BYTE	DirBuf[MAXDIRB(FF_MAX_LFN)];	/* Directory entry block scratchpad buffer */\r
#endif\r
static WCHAR LfnBuf[FF_MAX_LFN + 1];		/* LFN working buffer */\r
#define DEF_NAMBUF\r
#define INIT_NAMBUF(fs)\r
#define FREE_NAMBUF()\r
#define LEAVE_MKFS(res)	return res\r
\r
#elif FF_USE_LFN == 2 	/* LFN enabled with dynamic working buffer on the stack */\r
#if FF_FS_EXFAT\r
#define DEF_NAMBUF		WCHAR lbuf[FF_MAX_LFN+1]; BYTE dbuf[MAXDIRB(FF_MAX_LFN)];	/* LFN working buffer and directory entry block scratchpad buffer */\r
#define INIT_NAMBUF(fs)	{ (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }\r
#define FREE_NAMBUF()\r
#else\r
#define DEF_NAMBUF		WCHAR lbuf[FF_MAX_LFN+1];	/* LFN working buffer */\r
#define INIT_NAMBUF(fs)	{ (fs)->lfnbuf = lbuf; }\r
#define FREE_NAMBUF()\r
#endif\r
#define LEAVE_MKFS(res)	return res\r
\r
#elif FF_USE_LFN == 3 	/* LFN enabled with dynamic working buffer on the heap */\r
#if FF_FS_EXFAT\r
#define DEF_NAMBUF		WCHAR *lfn;	/* Pointer to LFN working buffer and directory entry block scratchpad buffer */\r
#define INIT_NAMBUF(fs)	{ lfn = ff_memalloc((FF_MAX_LFN+1)*2 + MAXDIRB(FF_MAX_LFN)); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+FF_MAX_LFN+1); }\r
#define FREE_NAMBUF()	ff_memfree(lfn)\r
#else\r
#define DEF_NAMBUF		WCHAR *lfn;	/* Pointer to LFN working buffer */\r
#define INIT_NAMBUF(fs)	{ lfn = ff_memalloc((FF_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }\r
#define FREE_NAMBUF()	ff_memfree(lfn)\r
#endif\r
#define LEAVE_MKFS(res)	{ if (!work) ff_memfree(buf); return res; }\r
#define MAX_MALLOC	0x8000	/* Must be >=FF_MAX_SS */\r
\r
#else\r
#error Wrong setting of FF_USE_LFN\r
\r
#endif	/* FF_USE_LFN == 1 */\r
#endif	/* FF_USE_LFN == 0 */\r
\r
\r
\r
/*--------------------------------*/\r
/* Code conversion tables         */\r
/*--------------------------------*/\r
\r
#if FF_CODE_PAGE == 0	/* Run-time code page configuration */\r
#define CODEPAGE CodePage\r
static WORD CodePage;	/* Current code page */\r
static const BYTE* ExCvt;	/* Ptr to SBCS up-case table Ct???[] (null:not used) */\r
static const BYTE* DbcTbl;	/* Ptr to DBCS code range table Dc???[] (null:not used) */\r
\r
static const BYTE Ct437[] = TBL_CT437;\r
static const BYTE Ct720[] = TBL_CT720;\r
static const BYTE Ct737[] = TBL_CT737;\r
static const BYTE Ct771[] = TBL_CT771;\r
static const BYTE Ct775[] = TBL_CT775;\r
static const BYTE Ct850[] = TBL_CT850;\r
static const BYTE Ct852[] = TBL_CT852;\r
static const BYTE Ct855[] = TBL_CT855;\r
static const BYTE Ct857[] = TBL_CT857;\r
static const BYTE Ct860[] = TBL_CT860;\r
static const BYTE Ct861[] = TBL_CT861;\r
static const BYTE Ct862[] = TBL_CT862;\r
static const BYTE Ct863[] = TBL_CT863;\r
static const BYTE Ct864[] = TBL_CT864;\r
static const BYTE Ct865[] = TBL_CT865;\r
static const BYTE Ct866[] = TBL_CT866;\r
static const BYTE Ct869[] = TBL_CT869;\r
static const BYTE Dc932[] = TBL_DC932;\r
static const BYTE Dc936[] = TBL_DC936;\r
static const BYTE Dc949[] = TBL_DC949;\r
static const BYTE Dc950[] = TBL_DC950;\r
\r
#elif FF_CODE_PAGE < 900	/* Static code page configuration (SBCS) */\r
#define CODEPAGE FF_CODE_PAGE\r
static const BYTE ExCvt[] = MKCVTBL(TBL_CT, FF_CODE_PAGE);\r
\r
#else					/* Static code page configuration (DBCS) */\r
#define CODEPAGE FF_CODE_PAGE\r
static const BYTE DbcTbl[] = MKCVTBL(TBL_DC, FF_CODE_PAGE);\r
\r
#endif\r
\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
   Module Private Functions\r
\r
---------------------------------------------------------------------------*/\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Load/Store multi-byte word in the FAT structure                       */\r
/*-----------------------------------------------------------------------*/\r
\r
static WORD ld_word (const BYTE* ptr)	/*	 Load a 2-byte little-endian word */\r
{\r
	WORD rv;\r
\r
	rv = ptr[1];\r
	rv = rv << 8 | ptr[0];\r
	return rv;\r
}\r
\r
static DWORD ld_dword (const BYTE* ptr)	/* Load a 4-byte little-endian word */\r
{\r
	DWORD rv;\r
\r
	rv = ptr[3];\r
	rv = rv << 8 | ptr[2];\r
	rv = rv << 8 | ptr[1];\r
	rv = rv << 8 | ptr[0];\r
	return rv;\r
}\r
\r
#if FF_FS_EXFAT\r
static QWORD ld_qword (const BYTE* ptr)	/* Load an 8-byte little-endian word */\r
{\r
	QWORD rv;\r
\r
	rv = ptr[7];\r
	rv = rv << 8 | ptr[6];\r
	rv = rv << 8 | ptr[5];\r
	rv = rv << 8 | ptr[4];\r
	rv = rv << 8 | ptr[3];\r
	rv = rv << 8 | ptr[2];\r
	rv = rv << 8 | ptr[1];\r
	rv = rv << 8 | ptr[0];\r
	return rv;\r
}\r
#endif\r
\r
#if !FF_FS_READONLY\r
static void st_word (BYTE* ptr, WORD val)	/* Store a 2-byte word in little-endian */\r
{\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val;\r
}\r
\r
static void st_dword (BYTE* ptr, DWORD val)	/* Store a 4-byte word in little-endian */\r
{\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val;\r
}\r
\r
#if FF_FS_EXFAT\r
static void st_qword (BYTE* ptr, QWORD val)	/* Store an 8-byte word in little-endian */\r
{\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val; val >>= 8;\r
	*ptr++ = (BYTE)val;\r
}\r
#endif\r
#endif	/* !FF_FS_READONLY */\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* String functions                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
/* Test if the byte is DBC 1st byte */\r
static int dbc_1st (BYTE c)\r
{\r
#if FF_CODE_PAGE == 0		/* Variable code page */\r
	if (DbcTbl && c >= DbcTbl[0]) {\r
		if (c <= DbcTbl[1]) return 1;					/* 1st byte range 1 */\r
		if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1;	/* 1st byte range 2 */\r
	}\r
#elif FF_CODE_PAGE >= 900	/* DBCS fixed code page */\r
	if (c >= DbcTbl[0]) {\r
		if (c <= DbcTbl[1]) return 1;\r
		if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1;\r
	}\r
#else						/* SBCS fixed code page */\r
	if (c != 0) return 0;	/* Always false */\r
#endif\r
	return 0;\r
}\r
\r
\r
/* Test if the byte is DBC 2nd byte */\r
static int dbc_2nd (BYTE c)\r
{\r
#if FF_CODE_PAGE == 0		/* Variable code page */\r
	if (DbcTbl && c >= DbcTbl[4]) {\r
		if (c <= DbcTbl[5]) return 1;					/* 2nd byte range 1 */\r
		if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1;	/* 2nd byte range 2 */\r
		if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1;	/* 2nd byte range 3 */\r
	}\r
#elif FF_CODE_PAGE >= 900	/* DBCS fixed code page */\r
	if (c >= DbcTbl[4]) {\r
		if (c <= DbcTbl[5]) return 1;\r
		if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1;\r
		if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1;\r
	}\r
#else						/* SBCS fixed code page */\r
	if (c != 0) return 0;	/* Always false */\r
#endif\r
	return 0;\r
}\r
\r
\r
#if FF_USE_LFN\r
\r
/* Get a Unicode code point from the TCHAR string in defined API encodeing */\r
static DWORD tchar2uni (	/* Returns a character in UTF-16 encoding (>=0x10000 on surrogate pair, 0xFFFFFFFF on decode error) */\r
	const TCHAR** str		/* Pointer to pointer to TCHAR string in configured encoding */\r
)\r
{\r
	DWORD uc;\r
	const TCHAR *p = *str;\r
\r
#if FF_LFN_UNICODE == 1		/* UTF-16 input */\r
	WCHAR wc;\r
\r
	uc = *p++;	/* Get a unit */\r
	if (IsSurrogate(uc)) {	/* Surrogate? */\r
		wc = *p++;		/* Get low surrogate */\r
		if (!IsSurrogateH(uc) || !IsSurrogateL(wc)) return 0xFFFFFFFF;	/* Wrong surrogate? */\r
		uc = uc << 16 | wc;\r
	}\r
\r
#elif FF_LFN_UNICODE == 2	/* UTF-8 input */\r
	BYTE b;\r
	int nf;\r
\r
	uc = (BYTE)*p++;	/* Get an encoding unit */\r
	if (uc & 0x80) {	/* Multiple byte code? */\r
		if        ((uc & 0xE0) == 0xC0) {	/* 2-byte sequence? */\r
			uc &= 0x1F; nf = 1;\r
		} else if ((uc & 0xF0) == 0xE0) {	/* 3-byte sequence? */\r
			uc &= 0x0F; nf = 2;\r
		} else if ((uc & 0xF8) == 0xF0) {	/* 4-byte sequence? */\r
			uc &= 0x07; nf = 3;\r
		} else {							/* Wrong sequence */\r
			return 0xFFFFFFFF;\r
		}\r
		do {	/* Get trailing bytes */\r
			b = (BYTE)*p++;\r
			if ((b & 0xC0) != 0x80) return 0xFFFFFFFF;	/* Wrong sequence? */\r
			uc = uc << 6 | (b & 0x3F);\r
		} while (--nf != 0);\r
		if (uc < 0x80 || IsSurrogate(uc) || uc >= 0x110000) return 0xFFFFFFFF;	/* Wrong code? */\r
		if (uc >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF);	/* Make a surrogate pair if needed */\r
	}\r
\r
#elif FF_LFN_UNICODE == 3	/* UTF-32 input */\r
	uc = (TCHAR)*p++;	/* Get a unit */\r
	if (uc >= 0x110000 || IsSurrogate(uc)) return 0xFFFFFFFF;	/* Wrong code? */\r
	if (uc >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF);	/* Make a surrogate pair if needed */\r
\r
#else		/* ANSI/OEM input */\r
	BYTE b;\r
	WCHAR wc;\r
\r
	wc = (BYTE)*p++;			/* Get a byte */\r
	if (dbc_1st((BYTE)wc)) {	/* Is it a DBC 1st byte? */\r
		b = (BYTE)*p++;			/* Get 2nd byte */\r
		if (!dbc_2nd(b)) return 0xFFFFFFFF;	/* Invalid code? */\r
		wc = (wc << 8) + b;		/* Make a DBC */\r
	}\r
	if (wc != 0) {\r
		wc = ff_oem2uni(wc, CODEPAGE);	/* ANSI/OEM ==> Unicode */\r
		if (wc == 0) return 0xFFFFFFFF;	/* Invalid code? */\r
	}\r
	uc = wc;\r
\r
#endif\r
	*str = p;	/* Next read pointer */\r
	return uc;\r
}\r
\r
\r
/* Store a Unicode char in defined API encoding */\r
static UINT put_utf (	/* Returns number of encoding units written (0:buffer overflow or wrong encoding) */\r
	DWORD chr,	/* UTF-16 encoded character (Surrogate pair if >=0x10000) */\r
	TCHAR* buf,	/* Output buffer */\r
	UINT szb	/* Size of the buffer */\r
)\r
{\r
#if FF_LFN_UNICODE == 1	/* UTF-16 output */\r
	WCHAR hs, wc;\r
\r
	hs = (WCHAR)(chr >> 16);\r
	wc = (WCHAR)chr;\r
	if (hs == 0) {	/* Single encoding unit? */\r
		if (szb < 1 || IsSurrogate(wc)) return 0;	/* Buffer overflow or wrong code? */\r
		*buf = wc;\r
		return 1;\r
	}\r
	if (szb < 2 || !IsSurrogateH(hs) || !IsSurrogateL(wc)) return 0;	/* Buffer overflow or wrong surrogate? */\r
	*buf++ = hs;\r
	*buf++ = wc;\r
	return 2;\r
\r
#elif FF_LFN_UNICODE == 2	/* UTF-8 output */\r
	DWORD hc;\r
\r
	if (chr < 0x80) {	/* Single byte code? */\r
		if (szb < 1) return 0;	/* Buffer overflow? */\r
		*buf = (TCHAR)chr;\r
		return 1;\r
	}\r
	if (chr < 0x800) {	/* 2-byte sequence? */\r
		if (szb < 2) return 0;	/* Buffer overflow? */\r
		*buf++ = (TCHAR)(0xC0 | (chr >> 6 & 0x1F));\r
		*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));\r
		return 2;\r
	}\r
	if (chr < 0x10000) {	/* 3-byte sequence? */\r
		if (szb < 3 || IsSurrogate(chr)) return 0;	/* Buffer overflow or wrong code? */\r
		*buf++ = (TCHAR)(0xE0 | (chr >> 12 & 0x0F));\r
		*buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));\r
		*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));\r
		return 3;\r
	}\r
	/* 4-byte sequence */\r
	if (szb < 4) return 0;	/* Buffer overflow? */\r
	hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6;	/* Get high 10 bits */\r
	chr = (chr & 0xFFFF) - 0xDC00;					/* Get low 10 bits */\r
	if (hc >= 0x100000 || chr >= 0x400) return 0;	/* Wrong surrogate? */\r
	chr = (hc | chr) + 0x10000;\r
	*buf++ = (TCHAR)(0xF0 | (chr >> 18 & 0x07));\r
	*buf++ = (TCHAR)(0x80 | (chr >> 12 & 0x3F));\r
	*buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));\r
	*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));\r
	return 4;\r
\r
#elif FF_LFN_UNICODE == 3	/* UTF-32 output */\r
	DWORD hc;\r
\r
	if (szb < 1) return 0;	/* Buffer overflow? */\r
	if (chr >= 0x10000) {	/* Out of BMP? */\r
		hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6;	/* Get high 10 bits */\r
		chr = (chr & 0xFFFF) - 0xDC00;					/* Get low 10 bits */\r
		if (hc >= 0x100000 || chr >= 0x400) return 0;	/* Wrong surrogate? */\r
		chr = (hc | chr) + 0x10000;\r
	}\r
	*buf++ = (TCHAR)chr;\r
	return 1;\r
\r
#else						/* ANSI/OEM output */\r
	WCHAR wc;\r
\r
	wc = ff_uni2oem(chr, CODEPAGE);\r
	if (wc >= 0x100) {	/* Is this a DBC? */\r
		if (szb < 2) return 0;\r
		*buf++ = (char)(wc >> 8);	/* Store DBC 1st byte */\r
		*buf++ = (TCHAR)wc;			/* Store DBC 2nd byte */\r
		return 2;\r
	}\r
	if (wc == 0 || szb < 1) return 0;	/* Invalid char or buffer overflow? */\r
	*buf++ = (TCHAR)wc;					/* Store the character */\r
	return 1;\r
#endif\r
}\r
#endif	/* FF_USE_LFN */\r
\r
\r
#if FF_FS_REENTRANT\r
/*-----------------------------------------------------------------------*/\r
/* Request/Release grant to access the volume                            */\r
/*-----------------------------------------------------------------------*/\r
\r
static int lock_volume (	/* 1:Ok, 0:timeout */\r
	FATFS* fs,				/* Filesystem object to lock */\r
	int syslock				/* System lock required */\r
)\r
{\r
	int rv;\r
\r
\r
#if FF_FS_LOCK\r
	rv = ff_mutex_take(fs->ldrv);	/* Lock the volume */\r
	if (rv && syslock) {			/* System lock reqiered? */\r
		rv = ff_mutex_take(FF_VOLUMES);	/* Lock the system */\r
		if (rv) {\r
			SysLock = 2;				/* System lock succeeded */\r
		} else {\r
			ff_mutex_give(fs->ldrv);	/* Failed system lock */\r
		}\r
	}\r
#else\r
	rv = syslock ? ff_mutex_take(fs->ldrv) : ff_mutex_take(fs->ldrv);	/* Lock the volume (this is to prevent compiler warning) */\r
#endif\r
	return rv;\r
}\r
\r
\r
static void unlock_volume (\r
	FATFS* fs,		/* Filesystem object */\r
	FRESULT res		/* Result code to be returned */\r
)\r
{\r
	if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {\r
#if FF_FS_LOCK\r
		if (SysLock == 2) {	/* Is the system locked? */\r
			SysLock = 1;\r
			ff_mutex_give(FF_VOLUMES);\r
		}\r
#endif\r
		ff_mutex_give(fs->ldrv);	/* Unlock the volume */\r
	}\r
}\r
\r
#endif\r
\r
\r
\r
#if FF_FS_LOCK\r
/*-----------------------------------------------------------------------*/\r
/* File shareing control functions                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT chk_share (	/* Check if the file can be accessed */\r
	DIR* dp,		/* Directory object pointing the file to be checked */\r
	int acc			/* Desired access type (0:Read mode open, 1:Write mode open, 2:Delete or rename) */\r
)\r
{\r
	UINT i, be;\r
\r
	/* Search open object table for the object */\r
	be = 0;\r
	for (i = 0; i < FF_FS_LOCK; i++) {\r
		if (Files[i].fs) {	/* Existing entry */\r
			if (Files[i].fs == dp->obj.fs &&	 	/* Check if the object matches with an open object */\r
				Files[i].clu == dp->obj.sclust &&\r
				Files[i].ofs == dp->dptr) break;\r
		} else {			/* Blank entry */\r
			be = 1;\r
		}\r
	}\r
	if (i == FF_FS_LOCK) {	/* The object has not been opened */\r
		return (!be && acc != 2) ? FR_TOO_MANY_OPEN_FILES : FR_OK;	/* Is there a blank entry for new object? */\r
	}\r
\r
	/* The object was opened. Reject any open against writing file and all write mode open */\r
	return (acc != 0 || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;\r
}\r
\r
\r
static int enq_share (void)	/* Check if an entry is available for a new object */\r
{\r
	UINT i;\r
\r
	for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ;	/* Find a free entry */\r
	return (i == FF_FS_LOCK) ? 0 : 1;\r
}\r
\r
\r
static UINT inc_share (	/* Increment object open counter and returns its index (0:Internal error) */\r
	DIR* dp,	/* Directory object pointing the file to register or increment */\r
	int acc		/* Desired access (0:Read, 1:Write, 2:Delete/Rename) */\r
)\r
{\r
	UINT i;\r
\r
\r
	for (i = 0; i < FF_FS_LOCK; i++) {	/* Find the object */\r
		if (Files[i].fs == dp->obj.fs\r
		 && Files[i].clu == dp->obj.sclust\r
		 && Files[i].ofs == dp->dptr) break;\r
	}\r
\r
	if (i == FF_FS_LOCK) {			/* Not opened. Register it as new. */\r
		for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ;	/* Find a free entry */\r
		if (i == FF_FS_LOCK) return 0;	/* No free entry to register (int err) */\r
		Files[i].fs = dp->obj.fs;\r
		Files[i].clu = dp->obj.sclust;\r
		Files[i].ofs = dp->dptr;\r
		Files[i].ctr = 0;\r
	}\r
\r
	if (acc >= 1 && Files[i].ctr) return 0;	/* Access violation (int err) */\r
\r
	Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1;	/* Set semaphore value */\r
\r
	return i + 1;	/* Index number origin from 1 */\r
}\r
\r
\r
static FRESULT dec_share (	/* Decrement object open counter */\r
	UINT i			/* Semaphore index (1..) */\r
)\r
{\r
	UINT n;\r
	FRESULT res;\r
\r
\r
	if (--i < FF_FS_LOCK) {	/* Index number origin from 0 */\r
		n = Files[i].ctr;\r
		if (n == 0x100) n = 0;	/* If write mode open, delete the object semaphore */\r
		if (n > 0) n--;			/* Decrement read mode open count */\r
		Files[i].ctr = n;\r
		if (n == 0) {			/* Delete the object semaphore if open count becomes zero */\r
			Files[i].fs = 0;	/* Free the entry <<<If this memory write operation is not in atomic, FF_FS_REENTRANT == 1 and FF_VOLUMES > 1, there is a potential error in this process >>> */\r
		}\r
		res = FR_OK;\r
	} else {\r
		res = FR_INT_ERR;		/* Invalid index number */\r
	}\r
	return res;\r
}\r
\r
\r
static void clear_share (	/* Clear all lock entries of the volume */\r
	FATFS* fs\r
)\r
{\r
	UINT i;\r
\r
	for (i = 0; i < FF_FS_LOCK; i++) {\r
		if (Files[i].fs == fs) Files[i].fs = 0;\r
	}\r
}\r
\r
#endif	/* FF_FS_LOCK */\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Move/Flush disk access window in the filesystem object                */\r
/*-----------------------------------------------------------------------*/\r
#if !FF_FS_READONLY\r
static FRESULT sync_window (	/* Returns FR_OK or FR_DISK_ERR */\r
	FATFS* fs			/* Filesystem object */\r
)\r
{\r
	FRESULT res = FR_OK;\r
\r
\r
	if (fs->wflag) {	/* Is the disk access window dirty? */\r
		if (disk_write(fs->pdrv, fs->win, fs->winsect, 1) == RES_OK) {	/* Write it back into the volume */\r
			fs->wflag = 0;	/* Clear window dirty flag */\r
			if (fs->winsect - fs->fatbase < fs->fsize) {	/* Is it in the 1st FAT? */\r
				if (fs->n_fats == 2) disk_write(fs->pdrv, fs->win, fs->winsect + fs->fsize, 1);	/* Reflect it to 2nd FAT if needed */\r
			}\r
		} else {\r
			res = FR_DISK_ERR;\r
		}\r
	}\r
	return res;\r
}\r
#endif\r
\r
\r
static FRESULT move_window (	/* Returns FR_OK or FR_DISK_ERR */\r
	FATFS* fs,		/* Filesystem object */\r
	LBA_t sect		/* Sector LBA to make appearance in the fs->win[] */\r
)\r
{\r
	FRESULT res = FR_OK;\r
\r
\r
	if (sect != fs->winsect) {	/* Window offset changed? */\r
#if !FF_FS_READONLY\r
		res = sync_window(fs);		/* Flush the window */\r
#endif\r
		if (res == FR_OK) {			/* Fill sector window with new data */\r
			if (disk_read(fs->pdrv, fs->win, sect, 1) != RES_OK) {\r
				sect = (LBA_t)0 - 1;	/* Invalidate window if read data is not valid */\r
				res = FR_DISK_ERR;\r
			}\r
			fs->winsect = sect;\r
		}\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Synchronize filesystem and data on the storage                        */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT sync_fs (	/* Returns FR_OK or FR_DISK_ERR */\r
	FATFS* fs		/* Filesystem object */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	res = sync_window(fs);\r
	if (res == FR_OK) {\r
		if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {	/* FAT32: Update FSInfo sector if needed */\r
			/* Create FSInfo structure */\r
			memset(fs->win, 0, sizeof fs->win);\r
			st_word(fs->win + BS_55AA, 0xAA55);					/* Boot signature */\r
			st_dword(fs->win + FSI_LeadSig, 0x41615252);		/* Leading signature */\r
			st_dword(fs->win + FSI_StrucSig, 0x61417272);		/* Structure signature */\r
			st_dword(fs->win + FSI_Free_Count, fs->free_clst);	/* Number of free clusters */\r
			st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);	/* Last allocated culuster */\r
			fs->winsect = fs->volbase + 1;						/* Write it into the FSInfo sector (Next to VBR) */\r
			disk_write(fs->pdrv, fs->win, fs->winsect, 1);\r
			fs->fsi_flag = 0;\r
		}\r
		/* Make sure that no pending write process in the lower layer */\r
		if (disk_ioctl(fs->pdrv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;\r
	}\r
\r
	return res;\r
}\r
\r
#endif\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get physical sector number from cluster number                        */\r
/*-----------------------------------------------------------------------*/\r
\r
static LBA_t clst2sect (	/* !=0:Sector number, 0:Failed (invalid cluster#) */\r
	FATFS* fs,		/* Filesystem object */\r
	DWORD clst		/* Cluster# to be converted */\r
)\r
{\r
	clst -= 2;		/* Cluster number is origin from 2 */\r
	if (clst >= fs->n_fatent - 2) return 0;		/* Is it invalid cluster number? */\r
	return fs->database + (LBA_t)fs->csize * clst;	/* Start sector number of the cluster */\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT access - Read value of an FAT entry                               */\r
/*-----------------------------------------------------------------------*/\r
\r
static DWORD get_fat (		/* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */\r
	FFOBJID* obj,	/* Corresponding object */\r
	DWORD clst		/* Cluster number to get the value */\r
)\r
{\r
	UINT wc, bc;\r
	DWORD val;\r
	FATFS *fs = obj->fs;\r
\r
\r
	if (clst < 2 || clst >= fs->n_fatent) {	/* Check if in valid range */\r
		val = 1;	/* Internal error */\r
\r
	} else {\r
		val = 0xFFFFFFFF;	/* Default value falls on disk error */\r
\r
		switch (fs->fs_type) {\r
		case FS_FAT12 :\r
			bc = (UINT)clst; bc += bc / 2;\r
			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
			wc = fs->win[bc++ % SS(fs)];		/* Get 1st byte of the entry */\r
			if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
			wc |= fs->win[bc % SS(fs)] << 8;	/* Merge 2nd byte of the entry */\r
			val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF);	/* Adjust bit position */\r
			break;\r
\r
		case FS_FAT16 :\r
			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;\r
			val = ld_word(fs->win + clst * 2 % SS(fs));		/* Simple WORD array */\r
			break;\r
\r
		case FS_FAT32 :\r
			if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r
			val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;	/* Simple DWORD array but mask out upper 4 bits */\r
			break;\r
#if FF_FS_EXFAT\r
		case FS_EXFAT :\r
			if ((obj->objsize != 0 && obj->sclust != 0) || obj->stat == 0) {	/* Object except root dir must have valid data length */\r
				DWORD cofs = clst - obj->sclust;	/* Offset from start cluster */\r
				DWORD clen = (DWORD)((LBA_t)((obj->objsize - 1) / SS(fs)) / fs->csize);	/* Number of clusters - 1 */\r
\r
				if (obj->stat == 2 && cofs <= clen) {	/* Is it a contiguous chain? */\r
					val = (cofs == clen) ? 0x7FFFFFFF : clst + 1;	/* No data on the FAT, generate the value */\r
					break;\r
				}\r
				if (obj->stat == 3 && cofs < obj->n_cont) {	/* Is it in the 1st fragment? */\r
					val = clst + 1; 	/* Generate the value */\r
					break;\r
				}\r
				if (obj->stat != 2) {	/* Get value from FAT if FAT chain is valid */\r
					if (obj->n_frag != 0) {	/* Is it on the growing edge? */\r
						val = 0x7FFFFFFF;	/* Generate EOC */\r
					} else {\r
						if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r
						val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;\r
					}\r
					break;\r
				}\r
			}\r
			val = 1;	/* Internal error */\r
			break;\r
#endif\r
		default:\r
			val = 1;	/* Internal error */\r
		}\r
	}\r
\r
	return val;\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* FAT access - Change value of an FAT entry                             */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT put_fat (	/* FR_OK(0):succeeded, !=0:error */\r
	FATFS* fs,		/* Corresponding filesystem object */\r
	DWORD clst,		/* FAT index number (cluster number) to be changed */\r
	DWORD val		/* New value to be set to the entry */\r
)\r
{\r
	UINT bc;\r
	BYTE *p;\r
	FRESULT res = FR_INT_ERR;\r
\r
\r
	if (clst >= 2 && clst < fs->n_fatent) {	/* Check if in valid range */\r
		switch (fs->fs_type) {\r
		case FS_FAT12:\r
			bc = (UINT)clst; bc += bc / 2;	/* bc: byte offset of the entry */\r
			res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
			if (res != FR_OK) break;\r
			p = fs->win + bc++ % SS(fs);\r
			*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;	/* Update 1st byte */\r
			fs->wflag = 1;\r
			res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
			if (res != FR_OK) break;\r
			p = fs->win + bc % SS(fs);\r
			*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));	/* Update 2nd byte */\r
			fs->wflag = 1;\r
			break;\r
\r
		case FS_FAT16:\r
			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));\r
			if (res != FR_OK) break;\r
			st_word(fs->win + clst * 2 % SS(fs), (WORD)val);	/* Simple WORD array */\r
			fs->wflag = 1;\r
			break;\r
\r
		case FS_FAT32:\r
#if FF_FS_EXFAT\r
		case FS_EXFAT:\r
#endif\r
			res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));\r
			if (res != FR_OK) break;\r
			if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r
				val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);\r
			}\r
			st_dword(fs->win + clst * 4 % SS(fs), val);\r
			fs->wflag = 1;\r
			break;\r
		}\r
	}\r
	return res;\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
\r
\r
\r
\r
#if FF_FS_EXFAT && !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* exFAT: Accessing FAT and Allocation Bitmap                            */\r
/*-----------------------------------------------------------------------*/\r
\r
/*--------------------------------------*/\r
/* Find a contiguous free cluster block */\r
/*--------------------------------------*/\r
\r
static DWORD find_bitmap (	/* 0:Not found, 2..:Cluster block found, 0xFFFFFFFF:Disk error */\r
	FATFS* fs,	/* Filesystem object */\r
	DWORD clst,	/* Cluster number to scan from */\r
	DWORD ncl	/* Number of contiguous clusters to find (1..) */\r
)\r
{\r
	BYTE bm, bv;\r
	UINT i;\r
	DWORD val, scl, ctr;\r
\r
\r
	clst -= 2;	/* The first bit in the bitmap corresponds to cluster #2 */\r
	if (clst >= fs->n_fatent - 2) clst = 0;\r
	scl = val = clst; ctr = 0;\r
	for (;;) {\r
		if (move_window(fs, fs->bitbase + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF;\r
		i = val / 8 % SS(fs); bm = 1 << (val % 8);\r
		do {\r
			do {\r
				bv = fs->win[i] & bm; bm <<= 1;		/* Get bit value */\r
				if (++val >= fs->n_fatent - 2) {	/* Next cluster (with wrap-around) */\r
					val = 0; bm = 0; i = SS(fs);\r
				}\r
				if (bv == 0) {	/* Is it a free cluster? */\r
					if (++ctr == ncl) return scl + 2;	/* Check if run length is sufficient for required */\r
				} else {\r
					scl = val; ctr = 0;		/* Encountered a cluster in-use, restart to scan */\r
				}\r
				if (val == clst) return 0;	/* All cluster scanned? */\r
			} while (bm != 0);\r
			bm = 1;\r
		} while (++i < SS(fs));\r
	}\r
}\r
\r
\r
/*----------------------------------------*/\r
/* Set/Clear a block of allocation bitmap */\r
/*----------------------------------------*/\r
\r
static FRESULT change_bitmap (\r
	FATFS* fs,	/* Filesystem object */\r
	DWORD clst,	/* Cluster number to change from */\r
	DWORD ncl,	/* Number of clusters to be changed */\r
	int bv		/* bit value to be set (0 or 1) */\r
)\r
{\r
	BYTE bm;\r
	UINT i;\r
	LBA_t sect;\r
\r
\r
	clst -= 2;	/* The first bit corresponds to cluster #2 */\r
	sect = fs->bitbase + clst / 8 / SS(fs);	/* Sector address */\r
	i = clst / 8 % SS(fs);					/* Byte offset in the sector */\r
	bm = 1 << (clst % 8);					/* Bit mask in the byte */\r
	for (;;) {\r
		if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;\r
		do {\r
			do {\r
				if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR;	/* Is the bit expected value? */\r
				fs->win[i] ^= bm;	/* Flip the bit */\r
				fs->wflag = 1;\r
				if (--ncl == 0) return FR_OK;	/* All bits processed? */\r
			} while (bm <<= 1);		/* Next bit */\r
			bm = 1;\r
		} while (++i < SS(fs));		/* Next byte */\r
		i = 0;\r
	}\r
}\r
\r
\r
/*---------------------------------------------*/\r
/* Fill the first fragment of the FAT chain    */\r
/*---------------------------------------------*/\r
\r
static FRESULT fill_first_frag (\r
	FFOBJID* obj	/* Pointer to the corresponding object */\r
)\r
{\r
	FRESULT res;\r
	DWORD cl, n;\r
\r
\r
	if (obj->stat == 3) {	/* Has the object been changed 'fragmented' in this session? */\r
		for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) {	/* Create cluster chain on the FAT */\r
			res = put_fat(obj->fs, cl, cl + 1);\r
			if (res != FR_OK) return res;\r
		}\r
		obj->stat = 0;	/* Change status 'FAT chain is valid' */\r
	}\r
	return FR_OK;\r
}\r
\r
\r
/*---------------------------------------------*/\r
/* Fill the last fragment of the FAT chain     */\r
/*---------------------------------------------*/\r
\r
static FRESULT fill_last_frag (\r
	FFOBJID* obj,	/* Pointer to the corresponding object */\r
	DWORD lcl,		/* Last cluster of the fragment */\r
	DWORD term		/* Value to set the last FAT entry */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	while (obj->n_frag > 0) {	/* Create the chain of last fragment */\r
		res = put_fat(obj->fs, lcl - obj->n_frag + 1, (obj->n_frag > 1) ? lcl - obj->n_frag + 2 : term);\r
		if (res != FR_OK) return res;\r
		obj->n_frag--;\r
	}\r
	return FR_OK;\r
}\r
\r
#endif	/* FF_FS_EXFAT && !FF_FS_READONLY */\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Remove a cluster chain                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT remove_chain (	/* FR_OK(0):succeeded, !=0:error */\r
	FFOBJID* obj,		/* Corresponding object */\r
	DWORD clst,			/* Cluster to remove a chain from */\r
	DWORD pclst			/* Previous cluster of clst (0 if entire chain) */\r
)\r
{\r
	FRESULT res = FR_OK;\r
	DWORD nxt;\r
	FATFS *fs = obj->fs;\r
#if FF_FS_EXFAT || FF_USE_TRIM\r
	DWORD scl = clst, ecl = clst;\r
#endif\r
#if FF_USE_TRIM\r
	LBA_t rt[2];\r
#endif\r
\r
	if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;	/* Check if in valid range */\r
\r
	/* Mark the previous cluster 'EOC' on the FAT if it exists */\r
	if (pclst != 0 && (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {\r
		res = put_fat(fs, pclst, 0xFFFFFFFF);\r
		if (res != FR_OK) return res;\r
	}\r
\r
	/* Remove the chain */\r
	do {\r
		nxt = get_fat(obj, clst);			/* Get cluster status */\r
		if (nxt == 0) break;				/* Empty cluster? */\r
		if (nxt == 1) return FR_INT_ERR;	/* Internal error? */\r
		if (nxt == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error? */\r
		if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r
			res = put_fat(fs, clst, 0);		/* Mark the cluster 'free' on the FAT */\r
			if (res != FR_OK) return res;\r
		}\r
		if (fs->free_clst < fs->n_fatent - 2) {	/* Update FSINFO */\r
			fs->free_clst++;\r
			fs->fsi_flag |= 1;\r
		}\r
#if FF_FS_EXFAT || FF_USE_TRIM\r
		if (ecl + 1 == nxt) {	/* Is next cluster contiguous? */\r
			ecl = nxt;\r
		} else {				/* End of contiguous cluster block */\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {\r
				res = change_bitmap(fs, scl, ecl - scl + 1, 0);	/* Mark the cluster block 'free' on the bitmap */\r
				if (res != FR_OK) return res;\r
			}\r
#endif\r
#if FF_USE_TRIM\r
			rt[0] = clst2sect(fs, scl);					/* Start of data area to be freed */\r
			rt[1] = clst2sect(fs, ecl) + fs->csize - 1;	/* End of data area to be freed */\r
			disk_ioctl(fs->pdrv, CTRL_TRIM, rt);		/* Inform storage device that the data in the block may be erased */\r
#endif\r
			scl = ecl = nxt;\r
		}\r
#endif\r
		clst = nxt;					/* Next cluster */\r
	} while (clst < fs->n_fatent);	/* Repeat while not the last link */\r
\r
#if FF_FS_EXFAT\r
	/* Some post processes for chain status */\r
	if (fs->fs_type == FS_EXFAT) {\r
		if (pclst == 0) {	/* Has the entire chain been removed? */\r
			obj->stat = 0;		/* Change the chain status 'initial' */\r
		} else {\r
			if (obj->stat == 0) {	/* Is it a fragmented chain from the beginning of this session? */\r
				clst = obj->sclust;		/* Follow the chain to check if it gets contiguous */\r
				while (clst != pclst) {\r
					nxt = get_fat(obj, clst);\r
					if (nxt < 2) return FR_INT_ERR;\r
					if (nxt == 0xFFFFFFFF) return FR_DISK_ERR;\r
					if (nxt != clst + 1) break;	/* Not contiguous? */\r
					clst++;\r
				}\r
				if (clst == pclst) {	/* Has the chain got contiguous again? */\r
					obj->stat = 2;		/* Change the chain status 'contiguous' */\r
				}\r
			} else {\r
				if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) {	/* Was the chain fragmented in this session and got contiguous again? */\r
					obj->stat = 2;	/* Change the chain status 'contiguous' */\r
				}\r
			}\r
		}\r
	}\r
#endif\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Stretch a chain or Create a new chain                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static DWORD create_chain (	/* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */\r
	FFOBJID* obj,		/* Corresponding object */\r
	DWORD clst			/* Cluster# to stretch, 0:Create a new chain */\r
)\r
{\r
	DWORD cs, ncl, scl;\r
	FRESULT res;\r
	FATFS *fs = obj->fs;\r
\r
\r
	if (clst == 0) {	/* Create a new chain */\r
		scl = fs->last_clst;				/* Suggested cluster to start to find */\r
		if (scl == 0 || scl >= fs->n_fatent) scl = 1;\r
	}\r
	else {				/* Stretch a chain */\r
		cs = get_fat(obj, clst);			/* Check the cluster status */\r
		if (cs < 2) return 1;				/* Test for insanity */\r
		if (cs == 0xFFFFFFFF) return cs;	/* Test for disk error */\r
		if (cs < fs->n_fatent) return cs;	/* It is already followed by next cluster */\r
		scl = clst;							/* Cluster to start to find */\r
	}\r
	if (fs->free_clst == 0) return 0;		/* No free cluster */\r
\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
		ncl = find_bitmap(fs, scl, 1);				/* Find a free cluster */\r
		if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl;	/* No free cluster or hard error? */\r
		res = change_bitmap(fs, ncl, 1, 1);			/* Mark the cluster 'in use' */\r
		if (res == FR_INT_ERR) return 1;\r
		if (res == FR_DISK_ERR) return 0xFFFFFFFF;\r
		if (clst == 0) {							/* Is it a new chain? */\r
			obj->stat = 2;							/* Set status 'contiguous' */\r
		} else {									/* It is a stretched chain */\r
			if (obj->stat == 2 && ncl != scl + 1) {	/* Is the chain got fragmented? */\r
				obj->n_cont = scl - obj->sclust;	/* Set size of the contiguous part */\r
				obj->stat = 3;						/* Change status 'just fragmented' */\r
			}\r
		}\r
		if (obj->stat != 2) {	/* Is the file non-contiguous? */\r
			if (ncl == clst + 1) {	/* Is the cluster next to previous one? */\r
				obj->n_frag = obj->n_frag ? obj->n_frag + 1 : 2;	/* Increment size of last framgent */\r
			} else {				/* New fragment */\r
				if (obj->n_frag == 0) obj->n_frag = 1;\r
				res = fill_last_frag(obj, clst, ncl);	/* Fill last fragment on the FAT and link it to new one */\r
				if (res == FR_OK) obj->n_frag = 1;\r
			}\r
		}\r
	} else\r
#endif\r
	{	/* On the FAT/FAT32 volume */\r
		ncl = 0;\r
		if (scl == clst) {						/* Stretching an existing chain? */\r
			ncl = scl + 1;						/* Test if next cluster is free */\r
			if (ncl >= fs->n_fatent) ncl = 2;\r
			cs = get_fat(obj, ncl);				/* Get next cluster status */\r
			if (cs == 1 || cs == 0xFFFFFFFF) return cs;	/* Test for error */\r
			if (cs != 0) {						/* Not free? */\r
				cs = fs->last_clst;				/* Start at suggested cluster if it is valid */\r
				if (cs >= 2 && cs < fs->n_fatent) scl = cs;\r
				ncl = 0;\r
			}\r
		}\r
		if (ncl == 0) {	/* The new cluster cannot be contiguous and find another fragment */\r
			ncl = scl;	/* Start cluster */\r
			for (;;) {\r
				ncl++;							/* Next cluster */\r
				if (ncl >= fs->n_fatent) {		/* Check wrap-around */\r
					ncl = 2;\r
					if (ncl > scl) return 0;	/* No free cluster found? */\r
				}\r
				cs = get_fat(obj, ncl);			/* Get the cluster status */\r
				if (cs == 0) break;				/* Found a free cluster? */\r
				if (cs == 1 || cs == 0xFFFFFFFF) return cs;	/* Test for error */\r
				if (ncl == scl) return 0;		/* No free cluster found? */\r
			}\r
		}\r
		res = put_fat(fs, ncl, 0xFFFFFFFF);		/* Mark the new cluster 'EOC' */\r
		if (res == FR_OK && clst != 0) {\r
			res = put_fat(fs, clst, ncl);		/* Link it from the previous one if needed */\r
		}\r
	}\r
\r
	if (res == FR_OK) {			/* Update FSINFO if function succeeded. */\r
		fs->last_clst = ncl;\r
		if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--;\r
		fs->fsi_flag |= 1;\r
	} else {\r
		ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;	/* Failed. Generate error status */\r
	}\r
\r
	return ncl;		/* Return new cluster number or error status */\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
\r
\r
\r
\r
#if FF_USE_FASTSEEK\r
/*-----------------------------------------------------------------------*/\r
/* FAT handling - Convert offset into cluster with link map table        */\r
/*-----------------------------------------------------------------------*/\r
\r
static DWORD clmt_clust (	/* <2:Error, >=2:Cluster number */\r
	FIL* fp,		/* Pointer to the file object */\r
	FSIZE_t ofs		/* File offset to be converted to cluster# */\r
)\r
{\r
	DWORD cl, ncl;\r
	DWORD *tbl;\r
	FATFS *fs = fp->obj.fs;\r
\r
\r
	tbl = fp->cltbl + 1;	/* Top of CLMT */\r
	cl = (DWORD)(ofs / SS(fs) / fs->csize);	/* Cluster order from top of the file */\r
	for (;;) {\r
		ncl = *tbl++;			/* Number of cluters in the fragment */\r
		if (ncl == 0) return 0;	/* End of table? (error) */\r
		if (cl < ncl) break;	/* In this fragment? */\r
		cl -= ncl; tbl++;		/* Next fragment */\r
	}\r
	return cl + *tbl;	/* Return the cluster number */\r
}\r
\r
#endif	/* FF_USE_FASTSEEK */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Fill a cluster with zeros                        */\r
/*-----------------------------------------------------------------------*/\r
\r
#if !FF_FS_READONLY\r
static FRESULT dir_clear (	/* Returns FR_OK or FR_DISK_ERR */\r
	FATFS *fs,		/* Filesystem object */\r
	DWORD clst		/* Directory table to clear */\r
)\r
{\r
	LBA_t sect;\r
	UINT n, szb;\r
	BYTE *ibuf;\r
\r
\r
	if (sync_window(fs) != FR_OK) return FR_DISK_ERR;	/* Flush disk access window */\r
	sect = clst2sect(fs, clst);		/* Top of the cluster */\r
	fs->winsect = sect;				/* Set window to top of the cluster */\r
	memset(fs->win, 0, sizeof fs->win);	/* Clear window buffer */\r
#if FF_USE_LFN == 3		/* Quick table clear by using multi-secter write */\r
	/* Allocate a temporary buffer */\r
	for (szb = ((DWORD)fs->csize * SS(fs) >= MAX_MALLOC) ? MAX_MALLOC : fs->csize * SS(fs), ibuf = 0; szb > SS(fs) && (ibuf = ff_memalloc(szb)) == 0; szb /= 2) ;\r
	if (szb > SS(fs)) {		/* Buffer allocated? */\r
		memset(ibuf, 0, szb);\r
		szb /= SS(fs);		/* Bytes -> Sectors */\r
		for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ;	/* Fill the cluster with 0 */\r
		ff_memfree(ibuf);\r
	} else\r
#endif\r
	{\r
		ibuf = fs->win; szb = 1;	/* Use window buffer (many single-sector writes may take a time) */\r
		for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ;	/* Fill the cluster with 0 */\r
	}\r
	return (n == fs->csize) ? FR_OK : FR_DISK_ERR;\r
}\r
#endif	/* !FF_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Set directory index                              */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_sdi (	/* FR_OK(0):succeeded, !=0:error */\r
	DIR* dp,		/* Pointer to directory object */\r
	DWORD ofs		/* Offset of directory table */\r
)\r
{\r
	DWORD csz, clst;\r
	FATFS *fs = dp->obj.fs;\r
\r
\r
	if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) {	/* Check range of offset and alignment */\r
		return FR_INT_ERR;\r
	}\r
	dp->dptr = ofs;				/* Set current offset */\r
	clst = dp->obj.sclust;		/* Table start cluster (0:root) */\r
	if (clst == 0 && fs->fs_type >= FS_FAT32) {	/* Replace cluster# 0 with root cluster# */\r
		clst = (DWORD)fs->dirbase;\r
		if (FF_FS_EXFAT) dp->obj.stat = 0;	/* exFAT: Root dir has an FAT chain */\r
	}\r
\r
	if (clst == 0) {	/* Static table (root-directory on the FAT volume) */\r
		if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR;	/* Is index out of range? */\r
		dp->sect = fs->dirbase;\r
\r
	} else {			/* Dynamic table (sub-directory or root-directory on the FAT32/exFAT volume) */\r
		csz = (DWORD)fs->csize * SS(fs);	/* Bytes per cluster */\r
		while (ofs >= csz) {				/* Follow cluster chain */\r
			clst = get_fat(&dp->obj, clst);				/* Get next cluster */\r
			if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */\r
			if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;	/* Reached to end of table or internal error */\r
			ofs -= csz;\r
		}\r
		dp->sect = clst2sect(fs, clst);\r
	}\r
	dp->clust = clst;					/* Current cluster# */\r
	if (dp->sect == 0) return FR_INT_ERR;\r
	dp->sect += ofs / SS(fs);			/* Sector# of the directory entry */\r
	dp->dir = fs->win + (ofs % SS(fs));	/* Pointer to the entry in the win[] */\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Move directory table index next                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_next (	/* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */\r
	DIR* dp,				/* Pointer to the directory object */\r
	int stretch				/* 0: Do not stretch table, 1: Stretch table if needed */\r
)\r
{\r
	DWORD ofs, clst;\r
	FATFS *fs = dp->obj.fs;\r
\r
\r
	ofs = dp->dptr + SZDIRE;	/* Next entry */\r
	if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) dp->sect = 0;	/* Disable it if the offset reached the max value */\r
	if (dp->sect == 0) return FR_NO_FILE;	/* Report EOT if it has been disabled */\r
\r
	if (ofs % SS(fs) == 0) {	/* Sector changed? */\r
		dp->sect++;				/* Next sector */\r
\r
		if (dp->clust == 0) {	/* Static table */\r
			if (ofs / SZDIRE >= fs->n_rootdir) {	/* Report EOT if it reached end of static table */\r
				dp->sect = 0; return FR_NO_FILE;\r
			}\r
		}\r
		else {					/* Dynamic table */\r
			if ((ofs / SS(fs) & (fs->csize - 1)) == 0) {	/* Cluster changed? */\r
				clst = get_fat(&dp->obj, dp->clust);		/* Get next cluster */\r
				if (clst <= 1) return FR_INT_ERR;			/* Internal error */\r
				if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */\r
				if (clst >= fs->n_fatent) {					/* It reached end of dynamic table */\r
#if !FF_FS_READONLY\r
					if (!stretch) {								/* If no stretch, report EOT */\r
						dp->sect = 0; return FR_NO_FILE;\r
					}\r
					clst = create_chain(&dp->obj, dp->clust);	/* Allocate a cluster */\r
					if (clst == 0) return FR_DENIED;			/* No free cluster */\r
					if (clst == 1) return FR_INT_ERR;			/* Internal error */\r
					if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */\r
					if (dir_clear(fs, clst) != FR_OK) return FR_DISK_ERR;	/* Clean up the stretched table */\r
					if (FF_FS_EXFAT) dp->obj.stat |= 4;			/* exFAT: The directory has been stretched */\r
#else\r
					if (!stretch) dp->sect = 0;					/* (this line is to suppress compiler warning) */\r
					dp->sect = 0; return FR_NO_FILE;			/* Report EOT */\r
#endif\r
				}\r
				dp->clust = clst;		/* Initialize data for new cluster */\r
				dp->sect = clst2sect(fs, clst);\r
			}\r
		}\r
	}\r
	dp->dptr = ofs;						/* Current entry */\r
	dp->dir = fs->win + ofs % SS(fs);	/* Pointer to the entry in the win[] */\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Reserve a block of directory entries             */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_alloc (	/* FR_OK(0):succeeded, !=0:error */\r
	DIR* dp,				/* Pointer to the directory object */\r
	UINT n_ent				/* Number of contiguous entries to allocate */\r
)\r
{\r
	FRESULT res;\r
	UINT n;\r
	FATFS *fs = dp->obj.fs;\r
\r
\r
	res = dir_sdi(dp, 0);\r
	if (res == FR_OK) {\r
		n = 0;\r
		do {\r
			res = move_window(fs, dp->sect);\r
			if (res != FR_OK) break;\r
#if FF_FS_EXFAT\r
			if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {	/* Is the entry free? */\r
#else\r
			if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {	/* Is the entry free? */\r
#endif\r
				if (++n == n_ent) break;	/* Is a block of contiguous free entries found? */\r
			} else {\r
				n = 0;				/* Not a free entry, restart to search */\r
			}\r
			res = dir_next(dp, 1);	/* Next entry with table stretch enabled */\r
		} while (res == FR_OK);\r
	}\r
\r
	if (res == FR_NO_FILE) res = FR_DENIED;	/* No directory entry to allocate */\r
	return res;\r
}\r
\r
#endif	/* !FF_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* FAT: Directory handling - Load/Store start cluster number             */\r
/*-----------------------------------------------------------------------*/\r
\r
static DWORD ld_clust (	/* Returns the top cluster value of the SFN entry */\r
	FATFS* fs,			/* Pointer to the fs object */\r
	const BYTE* dir		/* Pointer to the key entry */\r
)\r
{\r
	DWORD cl;\r
\r
	cl = ld_word(dir + DIR_FstClusLO);\r
	if (fs->fs_type == FS_FAT32) {\r
		cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;\r
	}\r
\r
	return cl;\r
}\r
\r
\r
#if !FF_FS_READONLY\r
static void st_clust (\r
	FATFS* fs,	/* Pointer to the fs object */\r
	BYTE* dir,	/* Pointer to the key entry */\r
	DWORD cl	/* Value to be set */\r
)\r
{\r
	st_word(dir + DIR_FstClusLO, (WORD)cl);\r
	if (fs->fs_type == FS_FAT32) {\r
		st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));\r
	}\r
}\r
#endif\r
\r
\r
\r
#if FF_USE_LFN\r
/*--------------------------------------------------------*/\r
/* FAT-LFN: Compare a part of file name with an LFN entry */\r
/*--------------------------------------------------------*/\r
\r
static int cmp_lfn (		/* 1:matched, 0:not matched */\r
	const WCHAR* lfnbuf,	/* Pointer to the LFN working buffer to be compared */\r
	BYTE* dir				/* Pointer to the directory entry containing the part of LFN */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc, uc;\r
\r
\r
	if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;	/* Check LDIR_FstClusLO */\r
\r
	i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;	/* Offset in the LFN buffer */\r
\r
	for (wc = 1, s = 0; s < 13; s++) {		/* Process all characters in the entry */\r
		uc = ld_word(dir + LfnOfs[s]);		/* Pick an LFN character */\r
		if (wc != 0) {\r
			if (i >= FF_MAX_LFN + 1 || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) {	/* Compare it */\r
				return 0;					/* Not matched */\r
			}\r
			wc = uc;\r
		} else {\r
			if (uc != 0xFFFF) return 0;		/* Check filler */\r
		}\r
	}\r
\r
	if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0;	/* Last segment matched but different length */\r
\r
	return 1;		/* The part of LFN matched */\r
}\r
\r
\r
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT\r
/*-----------------------------------------------------*/\r
/* FAT-LFN: Pick a part of file name from an LFN entry */\r
/*-----------------------------------------------------*/\r
\r
static int pick_lfn (	/* 1:succeeded, 0:buffer overflow or invalid LFN entry */\r
	WCHAR* lfnbuf,		/* Pointer to the LFN working buffer */\r
	BYTE* dir			/* Pointer to the LFN entry */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc, uc;\r
\r
\r
	if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;	/* Check LDIR_FstClusLO is 0 */\r
\r
	i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13;	/* Offset in the LFN buffer */\r
\r
	for (wc = 1, s = 0; s < 13; s++) {		/* Process all characters in the entry */\r
		uc = ld_word(dir + LfnOfs[s]);		/* Pick an LFN character */\r
		if (wc != 0) {\r
			if (i >= FF_MAX_LFN + 1) return 0;	/* Buffer overflow? */\r
			lfnbuf[i++] = wc = uc;			/* Store it */\r
		} else {\r
			if (uc != 0xFFFF) return 0;		/* Check filler */\r
		}\r
	}\r
\r
	if (dir[LDIR_Ord] & LLEF && wc != 0) {	/* Put terminator if it is the last LFN part and not terminated */\r
		if (i >= FF_MAX_LFN + 1) return 0;	/* Buffer overflow? */\r
		lfnbuf[i] = 0;\r
	}\r
\r
	return 1;		/* The part of LFN is valid */\r
}\r
#endif\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------*/\r
/* FAT-LFN: Create an entry of LFN entries */\r
/*-----------------------------------------*/\r
\r
static void put_lfn (\r
	const WCHAR* lfn,	/* Pointer to the LFN */\r
	BYTE* dir,			/* Pointer to the LFN entry to be created */\r
	BYTE ord,			/* LFN order (1-20) */\r
	BYTE sum			/* Checksum of the corresponding SFN */\r
)\r
{\r
	UINT i, s;\r
	WCHAR wc;\r
\r
\r
	dir[LDIR_Chksum] = sum;			/* Set checksum */\r
	dir[LDIR_Attr] = AM_LFN;		/* Set attribute. LFN entry */\r
	dir[LDIR_Type] = 0;\r
	st_word(dir + LDIR_FstClusLO, 0);\r
\r
	i = (ord - 1) * 13;				/* Get offset in the LFN working buffer */\r
	s = wc = 0;\r
	do {\r
		if (wc != 0xFFFF) wc = lfn[i++];	/* Get an effective character */\r
		st_word(dir + LfnOfs[s], wc);		/* Put it */\r
		if (wc == 0) wc = 0xFFFF;			/* Padding characters for following items */\r
	} while (++s < 13);\r
	if (wc == 0xFFFF || !lfn[i]) ord |= LLEF;	/* Last LFN part is the start of LFN sequence */\r
	dir[LDIR_Ord] = ord;			/* Set the LFN order */\r
}\r
\r
#endif	/* !FF_FS_READONLY */\r
#endif	/* FF_USE_LFN */\r
\r
\r
\r
#if FF_USE_LFN && !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* FAT-LFN: Create a Numbered SFN                                        */\r
/*-----------------------------------------------------------------------*/\r
\r
static void gen_numname (\r
	BYTE* dst,			/* Pointer to the buffer to store numbered SFN */\r
	const BYTE* src,	/* Pointer to SFN in directory form */\r
	const WCHAR* lfn,	/* Pointer to LFN */\r
	UINT seq			/* Sequence number */\r
)\r
{\r
	BYTE ns[8], c;\r
	UINT i, j;\r
	WCHAR wc;\r
	DWORD sreg;\r
\r
\r
	memcpy(dst, src, 11);	/* Prepare the SFN to be modified */\r
\r
	if (seq > 5) {	/* In case of many collisions, generate a hash number instead of sequential number */\r
		sreg = seq;\r
		while (*lfn) {	/* Create a CRC as hash value */\r
			wc = *lfn++;\r
			for (i = 0; i < 16; i++) {\r
				sreg = (sreg << 1) + (wc & 1);\r
				wc >>= 1;\r
				if (sreg & 0x10000) sreg ^= 0x11021;\r
			}\r
		}\r
		seq = (UINT)sreg;\r
	}\r
\r
	/* Make suffix (~ + hexadecimal) */\r
	i = 7;\r
	do {\r
		c = (BYTE)((seq % 16) + '0'); seq /= 16;\r
		if (c > '9') c += 7;\r
		ns[i--] = c;\r
	} while (i && seq);\r
	ns[i] = '~';\r
\r
	/* Append the suffix to the SFN body */\r
	for (j = 0; j < i && dst[j] != ' '; j++) {	/* Find the offset to append */\r
		if (dbc_1st(dst[j])) {	/* To avoid DBC break up */\r
			if (j == i - 1) break;\r
			j++;\r
		}\r
	}\r
	do {	/* Append the suffix */\r
		dst[j++] = (i < 8) ? ns[i++] : ' ';\r
	} while (j < 8);\r
}\r
#endif	/* FF_USE_LFN && !FF_FS_READONLY */\r
\r
\r
\r
#if FF_USE_LFN\r
/*-----------------------------------------------------------------------*/\r
/* FAT-LFN: Calculate checksum of an SFN entry                           */\r
/*-----------------------------------------------------------------------*/\r
\r
static BYTE sum_sfn (\r
	const BYTE* dir		/* Pointer to the SFN entry */\r
)\r
{\r
	BYTE sum = 0;\r
	UINT n = 11;\r
\r
	do {\r
		sum = (sum >> 1) + (sum << 7) + *dir++;\r
	} while (--n);\r
	return sum;\r
}\r
\r
#endif	/* FF_USE_LFN */\r
\r
\r
\r
#if FF_FS_EXFAT\r
/*-----------------------------------------------------------------------*/\r
/* exFAT: Checksum                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
static WORD xdir_sum (	/* Get checksum of the directoly entry block */\r
	const BYTE* dir		/* Directory entry block to be calculated */\r
)\r
{\r
	UINT i, szblk;\r
	WORD sum;\r
\r
\r
	szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;	/* Number of bytes of the entry block */\r
	for (i = sum = 0; i < szblk; i++) {\r
		if (i == XDIR_SetSum) {	/* Skip 2-byte sum field */\r
			i++;\r
		} else {\r
			sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];\r
		}\r
	}\r
	return sum;\r
}\r
\r
\r
\r
static WORD xname_sum (	/* Get check sum (to be used as hash) of the file name */\r
	const WCHAR* name	/* File name to be calculated */\r
)\r
{\r
	WCHAR chr;\r
	WORD sum = 0;\r
\r
\r
	while ((chr = *name++) != 0) {\r
		chr = (WCHAR)ff_wtoupper(chr);		/* File name needs to be up-case converted */\r
		sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);\r
		sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);\r
	}\r
	return sum;\r
}\r
\r
\r
#if !FF_FS_READONLY && FF_USE_MKFS\r
static DWORD xsum32 (	/* Returns 32-bit checksum */\r
	BYTE  dat,			/* Byte to be calculated (byte-by-byte processing) */\r
	DWORD sum			/* Previous sum value */\r
)\r
{\r
	sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;\r
	return sum;\r
}\r
#endif\r
\r
\r
\r
/*------------------------------------*/\r
/* exFAT: Get a directory entry block */\r
/*------------------------------------*/\r
\r
static FRESULT load_xdir (	/* FR_INT_ERR: invalid entry block */\r
	DIR* dp					/* Reading directory object pointing top of the entry block to load */\r
)\r
{\r
	FRESULT res;\r
	UINT i, sz_ent;\r
	BYTE *dirb = dp->obj.fs->dirbuf;	/* Pointer to the on-memory directory entry block 85+C0+C1s */\r
\r
\r
	/* Load file directory entry */\r
	res = move_window(dp->obj.fs, dp->sect);\r
	if (res != FR_OK) return res;\r
	if (dp->dir[XDIR_Type] != ET_FILEDIR) return FR_INT_ERR;	/* Invalid order */\r
	memcpy(dirb + 0 * SZDIRE, dp->dir, SZDIRE);\r
	sz_ent = (dirb[XDIR_NumSec] + 1) * SZDIRE;\r
	if (sz_ent < 3 * SZDIRE || sz_ent > 19 * SZDIRE) return FR_INT_ERR;\r
\r
	/* Load stream extension entry */\r
	res = dir_next(dp, 0);\r
	if (res == FR_NO_FILE) res = FR_INT_ERR;	/* It cannot be */\r
	if (res != FR_OK) return res;\r
	res = move_window(dp->obj.fs, dp->sect);\r
	if (res != FR_OK) return res;\r
	if (dp->dir[XDIR_Type] != ET_STREAM) return FR_INT_ERR;	/* Invalid order */\r
	memcpy(dirb + 1 * SZDIRE, dp->dir, SZDIRE);\r
	if (MAXDIRB(dirb[XDIR_NumName]) > sz_ent) return FR_INT_ERR;\r
\r
	/* Load file name entries */\r
	i = 2 * SZDIRE;	/* Name offset to load */\r
	do {\r
		res = dir_next(dp, 0);\r
		if (res == FR_NO_FILE) res = FR_INT_ERR;	/* It cannot be */\r
		if (res != FR_OK) return res;\r
		res = move_window(dp->obj.fs, dp->sect);\r
		if (res != FR_OK) return res;\r
		if (dp->dir[XDIR_Type] != ET_FILENAME) return FR_INT_ERR;	/* Invalid order */\r
		if (i < MAXDIRB(FF_MAX_LFN)) memcpy(dirb + i, dp->dir, SZDIRE);\r
	} while ((i += SZDIRE) < sz_ent);\r
\r
	/* Sanity check (do it for only accessible object) */\r
	if (i <= MAXDIRB(FF_MAX_LFN)) {\r
		if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;\r
	}\r
	return FR_OK;\r
}\r
\r
\r
/*------------------------------------------------------------------*/\r
/* exFAT: Initialize object allocation info with loaded entry block */\r
/*------------------------------------------------------------------*/\r
\r
static void init_alloc_info (\r
	FATFS* fs,		/* Filesystem object */\r
	FFOBJID* obj	/* Object allocation information to be initialized */\r
)\r
{\r
	obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus);		/* Start cluster */\r
	obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);	/* Size */\r
	obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;				/* Allocation status */\r
	obj->n_frag = 0;										/* No last fragment info */\r
}\r
\r
\r
\r
#if !FF_FS_READONLY || FF_FS_RPATH != 0\r
/*------------------------------------------------*/\r
/* exFAT: Load the object's directory entry block */\r
/*------------------------------------------------*/\r
\r
static FRESULT load_obj_xdir (\r
	DIR* dp,			/* Blank directory object to be used to access containing directory */\r
	const FFOBJID* obj	/* Object with its containing directory information */\r
)\r
{\r
	FRESULT res;\r
\r
	/* Open object containing directory */\r
	dp->obj.fs = obj->fs;\r
	dp->obj.sclust = obj->c_scl;\r
	dp->obj.stat = (BYTE)obj->c_size;\r
	dp->obj.objsize = obj->c_size & 0xFFFFFF00;\r
	dp->obj.n_frag = 0;\r
	dp->blk_ofs = obj->c_ofs;\r
\r
	res = dir_sdi(dp, dp->blk_ofs);	/* Goto object's entry block */\r
	if (res == FR_OK) {\r
		res = load_xdir(dp);		/* Load the object's entry block */\r
	}\r
	return res;\r
}\r
#endif\r
\r
\r
#if !FF_FS_READONLY\r
/*----------------------------------------*/\r
/* exFAT: Store the directory entry block */\r
/*----------------------------------------*/\r
\r
static FRESULT store_xdir (\r
	DIR* dp				/* Pointer to the directory object */\r
)\r
{\r
	FRESULT res;\r
	UINT nent;\r
	BYTE *dirb = dp->obj.fs->dirbuf;	/* Pointer to the directory entry block 85+C0+C1s */\r
\r
	/* Create set sum */\r
	st_word(dirb + XDIR_SetSum, xdir_sum(dirb));\r
	nent = dirb[XDIR_NumSec] + 1;\r
\r
	/* Store the directory entry block to the directory */\r
	res = dir_sdi(dp, dp->blk_ofs);\r
	while (res == FR_OK) {\r
		res = move_window(dp->obj.fs, dp->sect);\r
		if (res != FR_OK) break;\r
		memcpy(dp->dir, dirb, SZDIRE);\r
		dp->obj.fs->wflag = 1;\r
		if (--nent == 0) break;\r
		dirb += SZDIRE;\r
		res = dir_next(dp, 0);\r
	}\r
	return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;\r
}\r
\r
\r
\r
/*-------------------------------------------*/\r
/* exFAT: Create a new directory entry block */\r
/*-------------------------------------------*/\r
\r
static void create_xdir (\r
	BYTE* dirb,			/* Pointer to the directory entry block buffer */\r
	const WCHAR* lfn	/* Pointer to the object name */\r
)\r
{\r
	UINT i;\r
	BYTE nc1, nlen;\r
	WCHAR wc;\r
\r
\r
	/* Create file-directory and stream-extension entry */\r
	memset(dirb, 0, 2 * SZDIRE);\r
	dirb[0 * SZDIRE + XDIR_Type] = ET_FILEDIR;\r
	dirb[1 * SZDIRE + XDIR_Type] = ET_STREAM;\r
\r
	/* Create file-name entries */\r
	i = SZDIRE * 2;	/* Top of file_name entries */\r
	nlen = nc1 = 0; wc = 1;\r
	do {\r
		dirb[i++] = ET_FILENAME; dirb[i++] = 0;\r
		do {	/* Fill name field */\r
			if (wc != 0 && (wc = lfn[nlen]) != 0) nlen++;	/* Get a character if exist */\r
			st_word(dirb + i, wc); 	/* Store it */\r
			i += 2;\r
		} while (i % SZDIRE != 0);\r
		nc1++;\r
	} while (lfn[nlen]);	/* Fill next entry if any char follows */\r
\r
	dirb[XDIR_NumName] = nlen;		/* Set name length */\r
	dirb[XDIR_NumSec] = 1 + nc1;	/* Set secondary count (C0 + C1s) */\r
	st_word(dirb + XDIR_NameHash, xname_sum(lfn));	/* Set name hash */\r
}\r
\r
#endif	/* !FF_FS_READONLY */\r
#endif	/* FF_FS_EXFAT */\r
\r
\r
\r
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT\r
/*-----------------------------------------------------------------------*/\r
/* Read an object from the directory                                     */\r
/*-----------------------------------------------------------------------*/\r
\r
#define DIR_READ_FILE(dp) dir_read(dp, 0)\r
#define DIR_READ_LABEL(dp) dir_read(dp, 1)\r
\r
static FRESULT dir_read (\r
	DIR* dp,		/* Pointer to the directory object */\r
	int vol			/* Filtered by 0:file/directory or 1:volume label */\r
)\r
{\r
	FRESULT res = FR_NO_FILE;\r
	FATFS *fs = dp->obj.fs;\r
	BYTE attr, b;\r
#if FF_USE_LFN\r
	BYTE ord = 0xFF, sum = 0xFF;\r
#endif\r
\r
	while (dp->sect) {\r
		res = move_window(fs, dp->sect);\r
		if (res != FR_OK) break;\r
		b = dp->dir[DIR_Name];	/* Test for the entry type */\r
		if (b == 0) {\r
			res = FR_NO_FILE; break; /* Reached to end of the directory */\r
		}\r
#if FF_FS_EXFAT\r
		if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
			if (FF_USE_LABEL && vol) {\r
				if (b == ET_VLABEL) break;	/* Volume label entry? */\r
			} else {\r
				if (b == ET_FILEDIR) {		/* Start of the file entry block? */\r
					dp->blk_ofs = dp->dptr;	/* Get location of the block */\r
					res = load_xdir(dp);	/* Load the entry block */\r
					if (res == FR_OK) {\r
						dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK;	/* Get attribute */\r
					}\r
					break;\r
				}\r
			}\r
		} else\r
#endif\r
		{	/* On the FAT/FAT32 volume */\r
			dp->obj.attr = attr = dp->dir[DIR_Attr] & AM_MASK;	/* Get attribute */\r
#if FF_USE_LFN		/* LFN configuration */\r
			if (b == DDEM || b == '.' || (int)((attr & ~AM_ARC) == AM_VOL) != vol) {	/* An entry without valid data */\r
				ord = 0xFF;\r
			} else {\r
				if (attr == AM_LFN) {	/* An LFN entry is found */\r
					if (b & LLEF) {		/* Is it start of an LFN sequence? */\r
						sum = dp->dir[LDIR_Chksum];\r
						b &= (BYTE)~LLEF; ord = b;\r
						dp->blk_ofs = dp->dptr;\r
					}\r
					/* Check LFN validity and capture it */\r
					ord = (b == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;\r
				} else {				/* An SFN entry is found */\r
					if (ord != 0 || sum != sum_sfn(dp->dir)) {	/* Is there a valid LFN? */\r
						dp->blk_ofs = 0xFFFFFFFF;	/* It has no LFN. */\r
					}\r
					break;\r
				}\r
			}\r
#else		/* Non LFN configuration */\r
			if (b != DDEM && b != '.' && attr != AM_LFN && (int)((attr & ~AM_ARC) == AM_VOL) == vol) {	/* Is it a valid entry? */\r
				break;\r
			}\r
#endif\r
		}\r
		res = dir_next(dp, 0);		/* Next entry */\r
		if (res != FR_OK) break;\r
	}\r
\r
	if (res != FR_OK) dp->sect = 0;		/* Terminate the read operation on error or EOT */\r
	return res;\r
}\r
\r
#endif	/* FF_FS_MINIMIZE <= 1 || FF_USE_LABEL || FF_FS_RPATH >= 2 */\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Directory handling - Find an object in the directory                  */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_find (	/* FR_OK(0):succeeded, !=0:error */\r
	DIR* dp					/* Pointer to the directory object with the file name */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs = dp->obj.fs;\r
	BYTE c;\r
#if FF_USE_LFN\r
	BYTE a, ord, sum;\r
#endif\r
\r
	res = dir_sdi(dp, 0);			/* Rewind directory object */\r
	if (res != FR_OK) return res;\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
		BYTE nc;\r
		UINT di, ni;\r
		WORD hash = xname_sum(fs->lfnbuf);		/* Hash value of the name to find */\r
\r
		while ((res = DIR_READ_FILE(dp)) == FR_OK) {	/* Read an item */\r
#if FF_MAX_LFN < 255\r
			if (fs->dirbuf[XDIR_NumName] > FF_MAX_LFN) continue;		/* Skip comparison if inaccessible object name */\r
#endif\r
			if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue;	/* Skip comparison if hash mismatched */\r
			for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) {	/* Compare the name */\r
				if ((di % SZDIRE) == 0) di += 2;\r
				if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;\r
			}\r
			if (nc == 0 && !fs->lfnbuf[ni]) break;	/* Name matched? */\r
		}\r
		return res;\r
	}\r
#endif\r
	/* On the FAT/FAT32 volume */\r
#if FF_USE_LFN\r
	ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF;	/* Reset LFN sequence */\r
#endif\r
	do {\r
		res = move_window(fs, dp->sect);\r
		if (res != FR_OK) break;\r
		c = dp->dir[DIR_Name];\r
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */\r
#if FF_USE_LFN		/* LFN configuration */\r
		dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;\r
		if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) {	/* An entry without valid data */\r
			ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;	/* Reset LFN sequence */\r
		} else {\r
			if (a == AM_LFN) {			/* An LFN entry is found */\r
				if (!(dp->fn[NSFLAG] & NS_NOLFN)) {\r
					if (c & LLEF) {		/* Is it start of LFN sequence? */\r
						sum = dp->dir[LDIR_Chksum];\r
						c &= (BYTE)~LLEF; ord = c;	/* LFN start order */\r
						dp->blk_ofs = dp->dptr;	/* Start offset of LFN */\r
					}\r
					/* Check validity of the LFN entry and compare it with given name */\r
					ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;\r
				}\r
			} else {					/* An SFN entry is found */\r
				if (ord == 0 && sum == sum_sfn(dp->dir)) break;	/* LFN matched? */\r
				if (!(dp->fn[NSFLAG] & NS_LOSS) && !memcmp(dp->dir, dp->fn, 11)) break;	/* SFN matched? */\r
				ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;	/* Reset LFN sequence */\r
			}\r
		}\r
#else		/* Non LFN configuration */\r
		dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;\r
		if (!(dp->dir[DIR_Attr] & AM_VOL) && !memcmp(dp->dir, dp->fn, 11)) break;	/* Is it a valid entry? */\r
#endif\r
		res = dir_next(dp, 0);	/* Next entry */\r
	} while (res == FR_OK);\r
\r
	return res;\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Register an object to the directory                                   */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_register (	/* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */\r
	DIR* dp						/* Target directory with object name to be created */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs = dp->obj.fs;\r
#if FF_USE_LFN		/* LFN configuration */\r
	UINT n, len, n_ent;\r
	BYTE sn[12], sum;\r
\r
\r
	if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME;	/* Check name validity */\r
	for (len = 0; fs->lfnbuf[len]; len++) ;	/* Get lfn length */\r
\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
		n_ent = (len + 14) / 15 + 2;	/* Number of entries to allocate (85+C0+C1s) */\r
		res = dir_alloc(dp, n_ent);		/* Allocate directory entries */\r
		if (res != FR_OK) return res;\r
		dp->blk_ofs = dp->dptr - SZDIRE * (n_ent - 1);	/* Set the allocated entry block offset */\r
\r
		if (dp->obj.stat & 4) {			/* Has the directory been stretched by new allocation? */\r
			dp->obj.stat &= ~4;\r
			res = fill_first_frag(&dp->obj);	/* Fill the first fragment on the FAT if needed */\r
			if (res != FR_OK) return res;\r
			res = fill_last_frag(&dp->obj, dp->clust, 0xFFFFFFFF);	/* Fill the last fragment on the FAT if needed */\r
			if (res != FR_OK) return res;\r
			if (dp->obj.sclust != 0) {		/* Is it a sub-directory? */\r
				DIR dj;\r
\r
				res = load_obj_xdir(&dj, &dp->obj);	/* Load the object status */\r
				if (res != FR_OK) return res;\r
				dp->obj.objsize += (DWORD)fs->csize * SS(fs);		/* Increase the directory size by cluster size */\r
				st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize);\r
				st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);\r
				fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;		/* Update the allocation status */\r
				res = store_xdir(&dj);				/* Store the object status */\r
				if (res != FR_OK) return res;\r
			}\r
		}\r
\r
		create_xdir(fs->dirbuf, fs->lfnbuf);	/* Create on-memory directory block to be written later */\r
		return FR_OK;\r
	}\r
#endif\r
	/* On the FAT/FAT32 volume */\r
	memcpy(sn, dp->fn, 12);\r
	if (sn[NSFLAG] & NS_LOSS) {			/* When LFN is out of 8.3 format, generate a numbered name */\r
		dp->fn[NSFLAG] = NS_NOLFN;		/* Find only SFN */\r
		for (n = 1; n < 100; n++) {\r
			gen_numname(dp->fn, sn, fs->lfnbuf, n);	/* Generate a numbered name */\r
			res = dir_find(dp);				/* Check if the name collides with existing SFN */\r
			if (res != FR_OK) break;\r
		}\r
		if (n == 100) return FR_DENIED;		/* Abort if too many collisions */\r
		if (res != FR_NO_FILE) return res;	/* Abort if the result is other than 'not collided' */\r
		dp->fn[NSFLAG] = sn[NSFLAG];\r
	}\r
\r
	/* Create an SFN with/without LFNs. */\r
	n_ent = (sn[NSFLAG] & NS_LFN) ? (len + 12) / 13 + 1 : 1;	/* Number of entries to allocate */\r
	res = dir_alloc(dp, n_ent);		/* Allocate entries */\r
	if (res == FR_OK && --n_ent) {	/* Set LFN entry if needed */\r
		res = dir_sdi(dp, dp->dptr - n_ent * SZDIRE);\r
		if (res == FR_OK) {\r
			sum = sum_sfn(dp->fn);	/* Checksum value of the SFN tied to the LFN */\r
			do {					/* Store LFN entries in bottom first */\r
				res = move_window(fs, dp->sect);\r
				if (res != FR_OK) break;\r
				put_lfn(fs->lfnbuf, dp->dir, (BYTE)n_ent, sum);\r
				fs->wflag = 1;\r
				res = dir_next(dp, 0);	/* Next entry */\r
			} while (res == FR_OK && --n_ent);\r
		}\r
	}\r
\r
#else	/* Non LFN configuration */\r
	res = dir_alloc(dp, 1);		/* Allocate an entry for SFN */\r
\r
#endif\r
\r
	/* Set SFN entry */\r
	if (res == FR_OK) {\r
		res = move_window(fs, dp->sect);\r
		if (res == FR_OK) {\r
			memset(dp->dir, 0, SZDIRE);	/* Clean the entry */\r
			memcpy(dp->dir + DIR_Name, dp->fn, 11);	/* Put SFN */\r
#if FF_USE_LFN\r
			dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT);	/* Put NT flag */\r
#endif\r
			fs->wflag = 1;\r
		}\r
	}\r
\r
	return res;\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
\r
\r
\r
#if !FF_FS_READONLY && FF_FS_MINIMIZE == 0\r
/*-----------------------------------------------------------------------*/\r
/* Remove an object from the directory                                   */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT dir_remove (	/* FR_OK:Succeeded, FR_DISK_ERR:A disk error */\r
	DIR* dp					/* Directory object pointing the entry to be removed */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs = dp->obj.fs;\r
#if FF_USE_LFN		/* LFN configuration */\r
	DWORD last = dp->dptr;\r
\r
	res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs);	/* Goto top of the entry block if LFN is exist */\r
	if (res == FR_OK) {\r
		do {\r
			res = move_window(fs, dp->sect);\r
			if (res != FR_OK) break;\r
			if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
				dp->dir[XDIR_Type] &= 0x7F;	/* Clear the entry InUse flag. */\r
			} else {										/* On the FAT/FAT32 volume */\r
				dp->dir[DIR_Name] = DDEM;	/* Mark the entry 'deleted'. */\r
			}\r
			fs->wflag = 1;\r
			if (dp->dptr >= last) break;	/* If reached last entry then all entries of the object has been deleted. */\r
			res = dir_next(dp, 0);	/* Next entry */\r
		} while (res == FR_OK);\r
		if (res == FR_NO_FILE) res = FR_INT_ERR;\r
	}\r
#else			/* Non LFN configuration */\r
\r
	res = move_window(fs, dp->sect);\r
	if (res == FR_OK) {\r
		dp->dir[DIR_Name] = DDEM;	/* Mark the entry 'deleted'.*/\r
		fs->wflag = 1;\r
	}\r
#endif\r
\r
	return res;\r
}\r
\r
#endif /* !FF_FS_READONLY && FF_FS_MINIMIZE == 0 */\r
\r
\r
\r
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2\r
/*-----------------------------------------------------------------------*/\r
/* Get file information from directory entry                             */\r
/*-----------------------------------------------------------------------*/\r
\r
static void get_fileinfo (\r
	DIR* dp,			/* Pointer to the directory object */\r
	FILINFO* fno		/* Pointer to the file information to be filled */\r
)\r
{\r
	UINT si, di;\r
#if FF_USE_LFN\r
	BYTE lcf;\r
	WCHAR wc, hs;\r
	FATFS *fs = dp->obj.fs;\r
	UINT nw;\r
#else\r
	TCHAR c;\r
#endif\r
\r
\r
	fno->fname[0] = 0;			/* Invaidate file info */\r
	if (dp->sect == 0) return;	/* Exit if read pointer has reached end of directory */\r
\r
#if FF_USE_LFN		/* LFN configuration */\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {	/* exFAT volume */\r
		UINT nc = 0;\r
\r
		si = SZDIRE * 2; di = 0;	/* 1st C1 entry in the entry block */\r
		hs = 0;\r
		while (nc < fs->dirbuf[XDIR_NumName]) {\r
			if (si >= MAXDIRB(FF_MAX_LFN)) {	/* Truncated directory block? */\r
				di = 0; break;\r
			}\r
			if ((si % SZDIRE) == 0) si += 2;	/* Skip entry type field */\r
			wc = ld_word(fs->dirbuf + si); si += 2; nc++;	/* Get a character */\r
			if (hs == 0 && IsSurrogate(wc)) {	/* Is it a surrogate? */\r
				hs = wc; continue;				/* Get low surrogate */\r
			}\r
			nw = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di);	/* Store it in API encoding */\r
			if (nw == 0) {						/* Buffer overflow or wrong char? */\r
				di = 0; break;\r
			}\r
			di += nw;\r
			hs = 0;\r
		}\r
		if (hs != 0) di = 0;					/* Broken surrogate pair? */\r
		if (di == 0) fno->fname[di++] = '\?';	/* Inaccessible object name? */\r
		fno->fname[di] = 0;						/* Terminate the name */\r
		fno->altname[0] = 0;					/* exFAT does not support SFN */\r
\r
		fno->fattrib = fs->dirbuf[XDIR_Attr] & AM_MASKX;		/* Attribute */\r
		fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(fs->dirbuf + XDIR_FileSize);	/* Size */\r
		fno->ftime = ld_word(fs->dirbuf + XDIR_ModTime + 0);	/* Time */\r
		fno->fdate = ld_word(fs->dirbuf + XDIR_ModTime + 2);	/* Date */\r
		return;\r
	} else\r
#endif\r
	{	/* FAT/FAT32 volume */\r
		if (dp->blk_ofs != 0xFFFFFFFF) {	/* Get LFN if available */\r
			si = di = 0;\r
			hs = 0;\r
			while (fs->lfnbuf[si] != 0) {\r
				wc = fs->lfnbuf[si++];		/* Get an LFN character (UTF-16) */\r
				if (hs == 0 && IsSurrogate(wc)) {	/* Is it a surrogate? */\r
					hs = wc; continue;		/* Get low surrogate */\r
				}\r
				nw = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di);	/* Store it in API encoding */\r
				if (nw == 0) {				/* Buffer overflow or wrong char? */\r
					di = 0; break;\r
				}\r
				di += nw;\r
				hs = 0;\r
			}\r
			if (hs != 0) di = 0;	/* Broken surrogate pair? */\r
			fno->fname[di] = 0;		/* Terminate the LFN (null string means LFN is invalid) */\r
		}\r
	}\r
\r
	si = di = 0;\r
	while (si < 11) {		/* Get SFN from SFN entry */\r
		wc = dp->dir[si++];			/* Get a char */\r
		if (wc == ' ') continue;	/* Skip padding spaces */\r
		if (wc == RDDEM) wc = DDEM;	/* Restore replaced DDEM character */\r
		if (si == 9 && di < FF_SFN_BUF) fno->altname[di++] = '.';	/* Insert a . if extension is exist */\r
#if FF_LFN_UNICODE >= 1	/* Unicode output */\r
		if (dbc_1st((BYTE)wc) && si != 8 && si != 11 && dbc_2nd(dp->dir[si])) {	/* Make a DBC if needed */\r
			wc = wc << 8 | dp->dir[si++];\r
		}\r
		wc = ff_oem2uni(wc, CODEPAGE);		/* ANSI/OEM -> Unicode */\r
		if (wc == 0) {				/* Wrong char in the current code page? */\r
			di = 0; break;\r
		}\r
		nw = put_utf(wc, &fno->altname[di], FF_SFN_BUF - di);	/* Store it in API encoding */\r
		if (nw == 0) {				/* Buffer overflow? */\r
			di = 0; break;\r
		}\r
		di += nw;\r
#else					/* ANSI/OEM output */\r
		fno->altname[di++] = (TCHAR)wc;	/* Store it without any conversion */\r
#endif\r
	}\r
	fno->altname[di] = 0;	/* Terminate the SFN  (null string means SFN is invalid) */\r
\r
	if (fno->fname[0] == 0) {	/* If LFN is invalid, altname[] needs to be copied to fname[] */\r
		if (di == 0) {	/* If LFN and SFN both are invalid, this object is inaccessible */\r
			fno->fname[di++] = '\?';\r
		} else {\r
			for (si = di = 0, lcf = NS_BODY; fno->altname[si]; si++, di++) {	/* Copy altname[] to fname[] with case information */\r
				wc = (WCHAR)fno->altname[si];\r
				if (wc == '.') lcf = NS_EXT;\r
				if (IsUpper(wc) && (dp->dir[DIR_NTres] & lcf)) wc += 0x20;\r
				fno->fname[di] = (TCHAR)wc;\r
			}\r
		}\r
		fno->fname[di] = 0;	/* Terminate the LFN */\r
		if (!dp->dir[DIR_NTres]) fno->altname[0] = 0;	/* Altname is not needed if neither LFN nor case info is exist. */\r
	}\r
\r
#else	/* Non-LFN configuration */\r
	si = di = 0;\r
	while (si < 11) {		/* Copy name body and extension */\r
		c = (TCHAR)dp->dir[si++];\r
		if (c == ' ') continue;		/* Skip padding spaces */\r
		if (c == RDDEM) c = DDEM;	/* Restore replaced DDEM character */\r
		if (si == 9) fno->fname[di++] = '.';/* Insert a . if extension is exist */\r
		fno->fname[di++] = c;\r
	}\r
	fno->fname[di] = 0;		/* Terminate the SFN */\r
#endif\r
\r
	fno->fattrib = dp->dir[DIR_Attr] & AM_MASK;			/* Attribute */\r
	fno->fsize = ld_dword(dp->dir + DIR_FileSize);		/* Size */\r
	fno->ftime = ld_word(dp->dir + DIR_ModTime + 0);	/* Time */\r
	fno->fdate = ld_word(dp->dir + DIR_ModTime + 2);	/* Date */\r
}\r
\r
#endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */\r
\r
\r
\r
#if FF_USE_FIND && FF_FS_MINIMIZE <= 1\r
/*-----------------------------------------------------------------------*/\r
/* Pattern matching                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
#define FIND_RECURS	4	/* Maximum number of wildcard terms in the pattern to limit recursion */\r
\r
\r
static DWORD get_achar (	/* Get a character and advance ptr */\r
	const TCHAR** ptr		/* Pointer to pointer to the ANSI/OEM or Unicode string */\r
)\r
{\r
	DWORD chr;\r
\r
\r
#if FF_USE_LFN && FF_LFN_UNICODE >= 1	/* Unicode input */\r
	chr = tchar2uni(ptr);\r
	if (chr == 0xFFFFFFFF) chr = 0;		/* Wrong UTF encoding is recognized as end of the string */\r
	chr = ff_wtoupper(chr);\r
\r
#else									/* ANSI/OEM input */\r
	chr = (BYTE)*(*ptr)++;				/* Get a byte */\r
	if (IsLower(chr)) chr -= 0x20;		/* To upper ASCII char */\r
#if FF_CODE_PAGE == 0\r
	if (ExCvt && chr >= 0x80) chr = ExCvt[chr - 0x80];	/* To upper SBCS extended char */\r
#elif FF_CODE_PAGE < 900\r
	if (chr >= 0x80) chr = ExCvt[chr - 0x80];	/* To upper SBCS extended char */\r
#endif\r
#if FF_CODE_PAGE == 0 || FF_CODE_PAGE >= 900\r
	if (dbc_1st((BYTE)chr)) {	/* Get DBC 2nd byte if needed */\r
		chr = dbc_2nd((BYTE)**ptr) ? chr << 8 | (BYTE)*(*ptr)++ : 0;\r
	}\r
#endif\r
\r
#endif\r
	return chr;\r
}\r
\r
\r
static int pattern_match (	/* 0:mismatched, 1:matched */\r
	const TCHAR* pat,	/* Matching pattern */\r
	const TCHAR* nam,	/* String to be tested */\r
	UINT skip,			/* Number of pre-skip chars (number of ?s, b8:infinite (* specified)) */\r
	UINT recur			/* Recursion count */\r
)\r
{\r
	const TCHAR *pptr;\r
	const TCHAR *nptr;\r
	DWORD pchr, nchr;\r
	UINT sk;\r
\r
\r
	while ((skip & 0xFF) != 0) {		/* Pre-skip name chars */\r
		if (!get_achar(&nam)) return 0;	/* Branch mismatched if less name chars */\r
		skip--;\r
	}\r
	if (*pat == 0 && skip) return 1;	/* Matched? (short circuit) */\r
\r
	do {\r
		pptr = pat; nptr = nam;			/* Top of pattern and name to match */\r
		for (;;) {\r
			if (*pptr == '\?' || *pptr == '*') {	/* Wildcard term? */\r
				if (recur == 0) return 0;	/* Too many wildcard terms? */\r
				sk = 0;\r
				do {	/* Analyze the wildcard term */\r
					if (*pptr++ == '\?') {\r
						sk++;\r
					} else {\r
						sk |= 0x100;\r
					}\r
				} while (*pptr == '\?' || *pptr == '*');\r
				if (pattern_match(pptr, nptr, sk, recur - 1)) return 1;	/* Test new branch (recursive call) */\r
				nchr = *nptr; break;	/* Branch mismatched */\r
			}\r
			pchr = get_achar(&pptr);	/* Get a pattern char */\r
			nchr = get_achar(&nptr);	/* Get a name char */\r
			if (pchr != nchr) break;	/* Branch mismatched? */\r
			if (pchr == 0) return 1;	/* Branch matched? (matched at end of both strings) */\r
		}\r
		get_achar(&nam);			/* nam++ */\r
	} while (skip && nchr);		/* Retry until end of name if infinite search is specified */\r
\r
	return 0;\r
}\r
\r
#endif /* FF_USE_FIND && FF_FS_MINIMIZE <= 1 */\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Pick a top segment and create the object name in directory form       */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT create_name (	/* FR_OK: successful, FR_INVALID_NAME: could not create */\r
	DIR* dp,					/* Pointer to the directory object */\r
	const TCHAR** path			/* Pointer to pointer to the segment in the path string */\r
)\r
{\r
#if FF_USE_LFN		/* LFN configuration */\r
	BYTE b, cf;\r
	WCHAR wc;\r
	WCHAR *lfn;\r
	const TCHAR* p;\r
	DWORD uc;\r
	UINT i, ni, si, di;\r
\r
\r
	/* Create LFN into LFN working buffer */\r
	p = *path; lfn = dp->obj.fs->lfnbuf; di = 0;\r
	for (;;) {\r
		uc = tchar2uni(&p);			/* Get a character */\r
		if (uc == 0xFFFFFFFF) return FR_INVALID_NAME;		/* Invalid code or UTF decode error */\r
		if (uc >= 0x10000) lfn[di++] = (WCHAR)(uc >> 16);	/* Store high surrogate if needed */\r
		wc = (WCHAR)uc;\r
		if (wc < ' ' || IsSeparator(wc)) break;	/* Break if end of the path or a separator is found */\r
		if (wc < 0x80 && strchr("*:<>|\"\?\x7F", (int)wc)) return FR_INVALID_NAME;	/* Reject illegal characters for LFN */\r
		if (di >= FF_MAX_LFN) return FR_INVALID_NAME;	/* Reject too long name */\r
		lfn[di++] = wc;				/* Store the Unicode character */\r
	}\r
	if (wc < ' ') {				/* Stopped at end of the path? */\r
		cf = NS_LAST;			/* Last segment */\r
	} else {					/* Stopped at a separator */\r
		while (IsSeparator(*p)) p++;	/* Skip duplicated separators if exist */\r
		cf = 0;					/* Next segment may follow */\r
		if (IsTerminator(*p)) cf = NS_LAST;	/* Ignore terminating separator */\r
	}\r
	*path = p;					/* Return pointer to the next segment */\r
\r
#if FF_FS_RPATH != 0\r
	if ((di == 1 && lfn[di - 1] == '.') ||\r
		(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {	/* Is this segment a dot name? */\r
		lfn[di] = 0;\r
		for (i = 0; i < 11; i++) {	/* Create dot name for SFN entry */\r
			dp->fn[i] = (i < di) ? '.' : ' ';\r
		}\r
		dp->fn[i] = cf | NS_DOT;	/* This is a dot entry */\r
		return FR_OK;\r
	}\r
#endif\r
	while (di) {					/* Snip off trailing spaces and dots if exist */\r
		wc = lfn[di - 1];\r
		if (wc != ' ' && wc != '.') break;\r
		di--;\r
	}\r
	lfn[di] = 0;							/* LFN is created into the working buffer */\r
	if (di == 0) return FR_INVALID_NAME;	/* Reject null name */\r
\r
	/* Create SFN in directory form */\r
	for (si = 0; lfn[si] == ' '; si++) ;	/* Remove leading spaces */\r
	if (si > 0 || lfn[si] == '.') cf |= NS_LOSS | NS_LFN;	/* Is there any leading space or dot? */\r
	while (di > 0 && lfn[di - 1] != '.') di--;	/* Find last dot (di<=si: no extension) */\r
\r
	memset(dp->fn, ' ', 11);\r
	i = b = 0; ni = 8;\r
	for (;;) {\r
		wc = lfn[si++];					/* Get an LFN character */\r
		if (wc == 0) break;				/* Break on end of the LFN */\r
		if (wc == ' ' || (wc == '.' && si != di)) {	/* Remove embedded spaces and dots */\r
			cf |= NS_LOSS | NS_LFN;\r
			continue;\r
		}\r
\r
		if (i >= ni || si == di) {		/* End of field? */\r
			if (ni == 11) {				/* Name extension overflow? */\r
				cf |= NS_LOSS | NS_LFN;\r
				break;\r
			}\r
			if (si != di) cf |= NS_LOSS | NS_LFN;	/* Name body overflow? */\r
			if (si > di) break;						/* No name extension? */\r
			si = di; i = 8; ni = 11; b <<= 2;		/* Enter name extension */\r
			continue;\r
		}\r
\r
		if (wc >= 0x80) {	/* Is this an extended character? */\r
			cf |= NS_LFN;	/* LFN entry needs to be created */\r
#if FF_CODE_PAGE == 0\r
			if (ExCvt) {	/* In SBCS cfg */\r
				wc = ff_uni2oem(wc, CODEPAGE);			/* Unicode ==> ANSI/OEM code */\r
				if (wc & 0x80) wc = ExCvt[wc & 0x7F];	/* Convert extended character to upper (SBCS) */\r
			} else {		/* In DBCS cfg */\r
				wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE);	/* Unicode ==> Up-convert ==> ANSI/OEM code */\r
			}\r
#elif FF_CODE_PAGE < 900	/* In SBCS cfg */\r
			wc = ff_uni2oem(wc, CODEPAGE);			/* Unicode ==> ANSI/OEM code */\r
			if (wc & 0x80) wc = ExCvt[wc & 0x7F];	/* Convert extended character to upper (SBCS) */\r
#else						/* In DBCS cfg */\r
			wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE);	/* Unicode ==> Up-convert ==> ANSI/OEM code */\r
#endif\r
		}\r
\r
		if (wc >= 0x100) {				/* Is this a DBC? */\r
			if (i >= ni - 1) {			/* Field overflow? */\r
				cf |= NS_LOSS | NS_LFN;\r
				i = ni; continue;		/* Next field */\r
			}\r
			dp->fn[i++] = (BYTE)(wc >> 8);	/* Put 1st byte */\r
		} else {						/* SBC */\r
			if (wc == 0 || strchr("+,;=[]", (int)wc)) {	/* Replace illegal characters for SFN */\r
				wc = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */\r
			} else {\r
				if (IsUpper(wc)) {		/* ASCII upper case? */\r
					b |= 2;\r
				}\r
				if (IsLower(wc)) {		/* ASCII lower case? */\r
					b |= 1; wc -= 0x20;\r
				}\r
			}\r
		}\r
		dp->fn[i++] = (BYTE)wc;\r
	}\r
\r
	if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM;	/* If the first character collides with DDEM, replace it with RDDEM */\r
\r
	if (ni == 8) b <<= 2;				/* Shift capital flags if no extension */\r
	if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN;	/* LFN entry needs to be created if composite capitals */\r
	if (!(cf & NS_LFN)) {				/* When LFN is in 8.3 format without extended character, NT flags are created */\r
		if (b & 0x01) cf |= NS_EXT;		/* NT flag (Extension has small capital letters only) */\r
		if (b & 0x04) cf |= NS_BODY;	/* NT flag (Body has small capital letters only) */\r
	}\r
\r
	dp->fn[NSFLAG] = cf;	/* SFN is created into dp->fn[] */\r
\r
	return FR_OK;\r
\r
\r
#else	/* FF_USE_LFN : Non-LFN configuration */\r
	BYTE c, d;\r
	BYTE *sfn;\r
	UINT ni, si, i;\r
	const char *p;\r
\r
	/* Create file name in directory form */\r
	p = *path; sfn = dp->fn;\r
	memset(sfn, ' ', 11);\r
	si = i = 0; ni = 8;\r
#if FF_FS_RPATH != 0\r
	if (p[si] == '.') { /* Is this a dot entry? */\r
		for (;;) {\r
			c = (BYTE)p[si++];\r
			if (c != '.' || si >= 3) break;\r
			sfn[i++] = c;\r
		}\r
		if (!IsSeparator(c) && c > ' ') return FR_INVALID_NAME;\r
		*path = p + si;					/* Return pointer to the next segment */\r
		sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;	/* Set last segment flag if end of the path */\r
		return FR_OK;\r
	}\r
#endif\r
	for (;;) {\r
		c = (BYTE)p[si++];				/* Get a byte */\r
		if (c <= ' ') break; 			/* Break if end of the path name */\r
		if (IsSeparator(c)) {			/* Break if a separator is found */\r
			while (IsSeparator(p[si])) si++;	/* Skip duplicated separator if exist */\r
			break;\r
		}\r
		if (c == '.' || i >= ni) {		/* End of body or field overflow? */\r
			if (ni == 11 || c != '.') return FR_INVALID_NAME;	/* Field overflow or invalid dot? */\r
			i = 8; ni = 11;				/* Enter file extension field */\r
			continue;\r
		}\r
#if FF_CODE_PAGE == 0\r
		if (ExCvt && c >= 0x80) {		/* Is SBC extended character? */\r
			c = ExCvt[c & 0x7F];		/* To upper SBC extended character */\r
		}\r
#elif FF_CODE_PAGE < 900\r
		if (c >= 0x80) {				/* Is SBC extended character? */\r
			c = ExCvt[c & 0x7F];		/* To upper SBC extended character */\r
		}\r
#endif\r
		if (dbc_1st(c)) {				/* Check if it is a DBC 1st byte */\r
			d = (BYTE)p[si++];			/* Get 2nd byte */\r
			if (!dbc_2nd(d) || i >= ni - 1) return FR_INVALID_NAME;	/* Reject invalid DBC */\r
			sfn[i++] = c;\r
			sfn[i++] = d;\r
		} else {						/* SBC */\r
			if (strchr("*+,:;<=>[]|\"\?\x7F", (int)c)) return FR_INVALID_NAME;	/* Reject illegal chrs for SFN */\r
			if (IsLower(c)) c -= 0x20;	/* To upper */\r
			sfn[i++] = c;\r
		}\r
	}\r
	*path = &p[si];						/* Return pointer to the next segment */\r
	if (i == 0) return FR_INVALID_NAME;	/* Reject nul string */\r
\r
	if (sfn[0] == DDEM) sfn[0] = RDDEM;	/* If the first character collides with DDEM, replace it with RDDEM */\r
	sfn[NSFLAG] = (c <= ' ' || p[si] <= ' ') ? NS_LAST : 0;	/* Set last segment flag if end of the path */\r
\r
	return FR_OK;\r
#endif /* FF_USE_LFN */\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Follow a file path                                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT follow_path (	/* FR_OK(0): successful, !=0: error code */\r
	DIR* dp,					/* Directory object to return last directory and found object */\r
	const TCHAR* path			/* Full-path string to find a file or directory */\r
)\r
{\r
	FRESULT res;\r
	BYTE ns;\r
	FATFS *fs = dp->obj.fs;\r
\r
\r
#if FF_FS_RPATH != 0\r
	if (!IsSeparator(*path) && (FF_STR_VOLUME_ID != 2 || !IsTerminator(*path))) {	/* Without heading separator */\r
		dp->obj.sclust = fs->cdir;			/* Start at the current directory */\r
	} else\r
#endif\r
	{										/* With heading separator */\r
		while (IsSeparator(*path)) path++;	/* Strip separators */\r
		dp->obj.sclust = 0;					/* Start from the root directory */\r
	}\r
#if FF_FS_EXFAT\r
	dp->obj.n_frag = 0;	/* Invalidate last fragment counter of the object */\r
#if FF_FS_RPATH != 0\r
	if (fs->fs_type == FS_EXFAT && dp->obj.sclust) {	/* exFAT: Retrieve the sub-directory's status */\r
		DIR dj;\r
\r
		dp->obj.c_scl = fs->cdc_scl;\r
		dp->obj.c_size = fs->cdc_size;\r
		dp->obj.c_ofs = fs->cdc_ofs;\r
		res = load_obj_xdir(&dj, &dp->obj);\r
		if (res != FR_OK) return res;\r
		dp->obj.objsize = ld_dword(fs->dirbuf + XDIR_FileSize);\r
		dp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
	}\r
#endif\r
#endif\r
\r
	if ((UINT)*path < ' ') {				/* Null path name is the origin directory itself */\r
		dp->fn[NSFLAG] = NS_NONAME;\r
		res = dir_sdi(dp, 0);\r
\r
	} else {								/* Follow path */\r
		for (;;) {\r
			res = create_name(dp, &path);	/* Get a segment name of the path */\r
			if (res != FR_OK) break;\r
			res = dir_find(dp);				/* Find an object with the segment name */\r
			ns = dp->fn[NSFLAG];\r
			if (res != FR_OK) {				/* Failed to find the object */\r
				if (res == FR_NO_FILE) {	/* Object is not found */\r
					if (FF_FS_RPATH && (ns & NS_DOT)) {	/* If dot entry is not exist, stay there */\r
						if (!(ns & NS_LAST)) continue;	/* Continue to follow if not last segment */\r
						dp->fn[NSFLAG] = NS_NONAME;\r
						res = FR_OK;\r
					} else {							/* Could not find the object */\r
						if (!(ns & NS_LAST)) res = FR_NO_PATH;	/* Adjust error code if not last segment */\r
					}\r
				}\r
				break;\r
			}\r
			if (ns & NS_LAST) break;		/* Last segment matched. Function completed. */\r
			/* Get into the sub-directory */\r
			if (!(dp->obj.attr & AM_DIR)) {	/* It is not a sub-directory and cannot follow */\r
				res = FR_NO_PATH; break;\r
			}\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {	/* Save containing directory information for next dir */\r
				dp->obj.c_scl = dp->obj.sclust;\r
				dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat;\r
				dp->obj.c_ofs = dp->blk_ofs;\r
				init_alloc_info(fs, &dp->obj);	/* Open next directory */\r
			} else\r
#endif\r
			{\r
				dp->obj.sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs));	/* Open next directory */\r
			}\r
		}\r
	}\r
\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get logical drive number from path name                               */\r
/*-----------------------------------------------------------------------*/\r
\r
static int get_ldnumber (	/* Returns logical drive number (-1:invalid drive number or null pointer) */\r
	const TCHAR** path		/* Pointer to pointer to the path name */\r
)\r
{\r
	const TCHAR *tp;\r
	const TCHAR *tt;\r
	TCHAR tc;\r
	int i;\r
	int vol = -1;\r
#if FF_STR_VOLUME_ID		/* Find string volume ID */\r
	const char *sp;\r
	char c;\r
#endif\r
\r
	tt = tp = *path;\r
	if (!tp) return vol;	/* Invalid path name? */\r
	do {					/* Find a colon in the path */\r
		tc = *tt++;\r
	} while (!IsTerminator(tc) && tc != ':');\r
\r
	if (tc == ':') {	/* DOS/Windows style volume ID? */\r
		i = FF_VOLUMES;\r
		if (IsDigit(*tp) && tp + 2 == tt) {	/* Is there a numeric volume ID + colon? */\r
			i = (int)*tp - '0';	/* Get the LD number */\r
		}\r
#if FF_STR_VOLUME_ID == 1	/* Arbitrary string is enabled */\r
		else {\r
			i = 0;\r
			do {\r
				sp = VolumeStr[i]; tp = *path;	/* This string volume ID and path name */\r
				do {	/* Compare the volume ID with path name */\r
					c = *sp++; tc = *tp++;\r
					if (IsLower(c)) c -= 0x20;\r
					if (IsLower(tc)) tc -= 0x20;\r
				} while (c && (TCHAR)c == tc);\r
			} while ((c || tp != tt) && ++i < FF_VOLUMES);	/* Repeat for each id until pattern match */\r
		}\r
#endif\r
		if (i < FF_VOLUMES) {	/* If a volume ID is found, get the drive number and strip it */\r
			vol = i;		/* Drive number */\r
			*path = tt;		/* Snip the drive prefix off */\r
		}\r
		return vol;\r
	}\r
#if FF_STR_VOLUME_ID == 2		/* Unix style volume ID is enabled */\r
	if (*tp == '/') {			/* Is there a volume ID? */\r
		while (*(tp + 1) == '/') tp++;	/* Skip duplicated separator */\r
		i = 0;\r
		do {\r
			tt = tp; sp = VolumeStr[i]; /* Path name and this string volume ID */\r
			do {	/* Compare the volume ID with path name */\r
				c = *sp++; tc = *(++tt);\r
				if (IsLower(c)) c -= 0x20;\r
				if (IsLower(tc)) tc -= 0x20;\r
			} while (c && (TCHAR)c == tc);\r
		} while ((c || (tc != '/' && !IsTerminator(tc))) && ++i < FF_VOLUMES);	/* Repeat for each ID until pattern match */\r
		if (i < FF_VOLUMES) {	/* If a volume ID is found, get the drive number and strip it */\r
			vol = i;		/* Drive number */\r
			*path = tt;		/* Snip the drive prefix off */\r
		}\r
		return vol;\r
	}\r
#endif\r
	/* No drive prefix is found */\r
#if FF_FS_RPATH != 0\r
	vol = CurrVol;	/* Default drive is current drive */\r
#else\r
	vol = 0;		/* Default drive is 0 */\r
#endif\r
	return vol;		/* Return the default drive */\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* GPT support functions                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
#if FF_LBA64\r
\r
/* Calculate CRC32 in byte-by-byte */\r
\r
static DWORD crc32 (	/* Returns next CRC value */\r
	DWORD crc,			/* Current CRC value */\r
	BYTE d				/* A byte to be processed */\r
)\r
{\r
	BYTE b;\r
\r
\r
	for (b = 1; b; b <<= 1) {\r
		crc ^= (d & b) ? 1 : 0;\r
		crc = (crc & 1) ? crc >> 1 ^ 0xEDB88320 : crc >> 1;\r
	}\r
	return crc;\r
}\r
\r
\r
/* Check validity of GPT header */\r
\r
static int test_gpt_header (	/* 0:Invalid, 1:Valid */\r
	const BYTE* gpth			/* Pointer to the GPT header */\r
)\r
{\r
	UINT i;\r
	DWORD bcc, hlen;\r
\r
\r
	if (memcmp(gpth + GPTH_Sign, "EFI PART" "\0\0\1", 12)) return 0;	/* Check signature and version (1.0) */\r
	hlen = ld_dword(gpth + GPTH_Size);						/* Check header size */\r
	if (hlen < 92 || hlen > FF_MIN_SS) return 0;\r
	for (i = 0, bcc = 0xFFFFFFFF; i < hlen; i++) {			/* Check header BCC */\r
		bcc = crc32(bcc, i - GPTH_Bcc < 4 ? 0 : gpth[i]);\r
	}\r
	if (~bcc != ld_dword(gpth + GPTH_Bcc)) return 0;\r
	if (ld_dword(gpth + GPTH_PteSize) != SZ_GPTE) return 0;	/* Table entry size (must be SZ_GPTE bytes) */\r
	if (ld_dword(gpth + GPTH_PtNum) > 128) return 0;		/* Table size (must be 128 entries or less) */\r
\r
	return 1;\r
}\r
\r
#if !FF_FS_READONLY && FF_USE_MKFS\r
\r
/* Generate random value */\r
static DWORD make_rand (\r
	DWORD seed,		/* Seed value */\r
	BYTE *buff,		/* Output buffer */\r
	UINT n			/* Data length */\r
)\r
{\r
	UINT r;\r
\r
\r
	if (seed == 0) seed = 1;\r
	do {\r
		for (r = 0; r < 8; r++) seed = seed & 1 ? seed >> 1 ^ 0xA3000000 : seed >> 1;	/* Shift 8 bits the 32-bit LFSR */\r
		*buff++ = (BYTE)seed;\r
	} while (--n);\r
	return seed;\r
}\r
\r
#endif\r
#endif\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Load a sector and check if it is an FAT VBR                           */\r
/*-----------------------------------------------------------------------*/\r
\r
/* Check what the sector is */\r
\r
static UINT check_fs (	/* 0:FAT/FAT32 VBR, 1:exFAT VBR, 2:Not FAT and valid BS, 3:Not FAT and invalid BS, 4:Disk error */\r
	FATFS* fs,			/* Filesystem object */\r
	LBA_t sect			/* Sector to load and check if it is an FAT-VBR or not */\r
)\r
{\r
	WORD w, sign;\r
	BYTE b;\r
\r
\r
	fs->wflag = 0; fs->winsect = (LBA_t)0 - 1;		/* Invaidate window */\r
	if (move_window(fs, sect) != FR_OK) return 4;	/* Load the boot sector */\r
	sign = ld_word(fs->win + BS_55AA);\r
#if FF_FS_EXFAT\r
	if (sign == 0xAA55 && !memcmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11)) return 1;	/* It is an exFAT VBR */\r
#endif\r
	b = fs->win[BS_JmpBoot];\r
	if (b == 0xEB || b == 0xE9 || b == 0xE8) {	/* Valid JumpBoot code? (short jump, near jump or near call) */\r
		if (sign == 0xAA55 && !memcmp(fs->win + BS_FilSysType32, "FAT32   ", 8)) {\r
			return 0;	/* It is an FAT32 VBR */\r
		}\r
		/* FAT volumes formatted with early MS-DOS lack BS_55AA and BS_FilSysType, so FAT VBR needs to be identified without them. */\r
		w = ld_word(fs->win + BPB_BytsPerSec);\r
		b = fs->win[BPB_SecPerClus];\r
		if ((w & (w - 1)) == 0 && w >= FF_MIN_SS && w <= FF_MAX_SS	/* Properness of sector size (512-4096 and 2^n) */\r
			&& b != 0 && (b & (b - 1)) == 0				/* Properness of cluster size (2^n) */\r
			&& ld_word(fs->win + BPB_RsvdSecCnt) != 0	/* Properness of reserved sectors (MNBZ) */\r
			&& (UINT)fs->win[BPB_NumFATs] - 1 <= 1		/* Properness of FATs (1 or 2) */\r
			&& ld_word(fs->win + BPB_RootEntCnt) != 0	/* Properness of root dir entries (MNBZ) */\r
			&& (ld_word(fs->win + BPB_TotSec16) >= 128 || ld_dword(fs->win + BPB_TotSec32) >= 0x10000)	/* Properness of volume sectors (>=128) */\r
			&& ld_word(fs->win + BPB_FATSz16) != 0) {	/* Properness of FAT size (MNBZ) */\r
				return 0;	/* It can be presumed an FAT VBR */\r
		}\r
	}\r
	return sign == 0xAA55 ? 2 : 3;	/* Not an FAT VBR (valid or invalid BS) */\r
}\r
\r
\r
/* Find an FAT volume */\r
/* (It supports only generic partitioning rules, MBR, GPT and SFD) */\r
\r
static UINT find_volume (	/* Returns BS status found in the hosting drive */\r
	FATFS* fs,		/* Filesystem object */\r
	UINT part		/* Partition to fined = 0:find as SFD and partitions, >0:forced partition number */\r
)\r
{\r
	UINT fmt, i;\r
	DWORD mbr_pt[4];\r
\r
\r
	fmt = check_fs(fs, 0);				/* Load sector 0 and check if it is an FAT VBR as SFD format */\r
	if (fmt != 2 && (fmt >= 3 || part == 0)) return fmt;	/* Returns if it is an FAT VBR as auto scan, not a BS or disk error */\r
\r
	/* Sector 0 is not an FAT VBR or forced partition number wants a partition */\r
\r
#if FF_LBA64\r
	if (fs->win[MBR_Table + PTE_System] == 0xEE) {	/* GPT protective MBR? */\r
		DWORD n_ent, v_ent, ofs;\r
		QWORD pt_lba;\r
\r
		if (move_window(fs, 1) != FR_OK) return 4;	/* Load GPT header sector (next to MBR) */\r
		if (!test_gpt_header(fs->win)) return 3;	/* Check if GPT header is valid */\r
		n_ent = ld_dword(fs->win + GPTH_PtNum);		/* Number of entries */\r
		pt_lba = ld_qword(fs->win + GPTH_PtOfs);	/* Table location */\r
		for (v_ent = i = 0; i < n_ent; i++) {		/* Find FAT partition */\r
			if (move_window(fs, pt_lba + i * SZ_GPTE / SS(fs)) != FR_OK) return 4;	/* PT sector */\r
			ofs = i * SZ_GPTE % SS(fs);												/* Offset in the sector */\r
			if (!memcmp(fs->win + ofs + GPTE_PtGuid, GUID_MS_Basic, 16)) {	/* MS basic data partition? */\r
				v_ent++;\r
				fmt = check_fs(fs, ld_qword(fs->win + ofs + GPTE_FstLba));	/* Load VBR and check status */\r
				if (part == 0 && fmt <= 1) return fmt;			/* Auto search (valid FAT volume found first) */\r
				if (part != 0 && v_ent == part) return fmt;		/* Forced partition order (regardless of it is valid or not) */\r
			}\r
		}\r
		return 3;	/* Not found */\r
	}\r
#endif\r
	if (FF_MULTI_PARTITION && part > 4) return 3;	/* MBR has 4 partitions max */\r
	for (i = 0; i < 4; i++) {		/* Load partition offset in the MBR */\r
		mbr_pt[i] = ld_dword(fs->win + MBR_Table + i * SZ_PTE + PTE_StLba);\r
	}\r
	i = part ? part - 1 : 0;		/* Table index to find first */\r
	do {							/* Find an FAT volume */\r
		fmt = mbr_pt[i] ? check_fs(fs, mbr_pt[i]) : 3;	/* Check if the partition is FAT */\r
	} while (part == 0 && fmt >= 2 && ++i < 4);\r
	return fmt;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Determine logical drive number and mount the volume if needed         */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT mount_volume (	/* FR_OK(0): successful, !=0: an error occurred */\r
	const TCHAR** path,			/* Pointer to pointer to the path name (drive number) */\r
	FATFS** rfs,				/* Pointer to pointer to the found filesystem object */\r
	BYTE mode					/* Desiered access mode to check write protection */\r
)\r
{\r
	int vol;\r
	FATFS *fs;\r
	DSTATUS stat;\r
	LBA_t bsect;\r
	DWORD tsect, sysect, fasize, nclst, szbfat;\r
	WORD nrsv;\r
	UINT fmt;\r
\r
\r
	/* Get logical drive number */\r
	*rfs = 0;\r
	vol = get_ldnumber(path);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
\r
	/* Check if the filesystem object is valid or not */\r
	fs = FatFs[vol];					/* Get pointer to the filesystem object */\r
	if (!fs) return FR_NOT_ENABLED;		/* Is the filesystem object available? */\r
#if FF_FS_REENTRANT\r
	if (!lock_volume(fs, 1)) return FR_TIMEOUT;	/* Lock the volume, and system if needed */\r
#endif\r
	*rfs = fs;							/* Return pointer to the filesystem object */\r
\r
	mode &= (BYTE)~FA_READ;				/* Desired access mode, write access or not */\r
	if (fs->fs_type != 0) {				/* If the volume has been mounted */\r
		stat = disk_status(fs->pdrv);\r
		if (!(stat & STA_NOINIT)) {		/* and the physical drive is kept initialized */\r
			if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) {	/* Check write protection if needed */\r
				return FR_WRITE_PROTECTED;\r
			}\r
			return FR_OK;				/* The filesystem object is already valid */\r
		}\r
	}\r
\r
	/* The filesystem object is not valid. */\r
	/* Following code attempts to mount the volume. (find an FAT volume, analyze the BPB and initialize the filesystem object) */\r
\r
	fs->fs_type = 0;					/* Invalidate the filesystem object */\r
	stat = disk_initialize(fs->pdrv);	/* Initialize the volume hosting physical drive */\r
	if (stat & STA_NOINIT) { 			/* Check if the initialization succeeded */\r
		return FR_NOT_READY;			/* Failed to initialize due to no medium or hard error */\r
	}\r
	if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */\r
		return FR_WRITE_PROTECTED;\r
	}\r
#if FF_MAX_SS != FF_MIN_SS				/* Get sector size (multiple sector size cfg only) */\r
	if (disk_ioctl(fs->pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR;\r
	if (SS(fs) > FF_MAX_SS || SS(fs) < FF_MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR;\r
#endif\r
\r
	/* Find an FAT volume on the hosting drive */\r
	fmt = find_volume(fs, LD2PT(vol));\r
	if (fmt == 4) return FR_DISK_ERR;		/* An error occurred in the disk I/O layer */\r
	if (fmt >= 2) return FR_NO_FILESYSTEM;	/* No FAT volume is found */\r
	bsect = fs->winsect;					/* Volume offset in the hosting physical drive */\r
\r
	/* An FAT volume is found (bsect). Following code initializes the filesystem object */\r
\r
#if FF_FS_EXFAT\r
	if (fmt == 1) {\r
		QWORD maxlba;\r
		DWORD so, cv, bcl, i;\r
\r
		for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ;	/* Check zero filler */\r
		if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;\r
\r
		if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM;	/* Check exFAT version (must be version 1.0) */\r
\r
		if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) {	/* (BPB_BytsPerSecEx must be equal to the physical sector size) */\r
			return FR_NO_FILESYSTEM;\r
		}\r
\r
		maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect;	/* Last LBA of the volume + 1 */\r
		if (!FF_LBA64 && maxlba >= 0x100000000) return FR_NO_FILESYSTEM;	/* (It cannot be accessed in 32-bit LBA) */\r
\r
		fs->fsize = ld_dword(fs->win + BPB_FatSzEx);	/* Number of sectors per FAT */\r
\r
		fs->n_fats = fs->win[BPB_NumFATsEx];			/* Number of FATs */\r
		if (fs->n_fats != 1) return FR_NO_FILESYSTEM;	/* (Supports only 1 FAT) */\r
\r
		fs->csize = 1 << fs->win[BPB_SecPerClusEx];		/* Cluster size */\r
		if (fs->csize == 0)	return FR_NO_FILESYSTEM;	/* (Must be 1..32768 sectors) */\r
\r
		nclst = ld_dword(fs->win + BPB_NumClusEx);		/* Number of clusters */\r
		if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM;	/* (Too many clusters) */\r
		fs->n_fatent = nclst + 2;\r
\r
		/* Boundaries and Limits */\r
		fs->volbase = bsect;\r
		fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);\r
		fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);\r
		if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM;	/* (Volume size must not be smaller than the size required) */\r
		fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);\r
\r
		/* Get bitmap location and check if it is contiguous (implementation assumption) */\r
		so = i = 0;\r
		for (;;) {	/* Find the bitmap entry in the root directory (in only first cluster) */\r
			if (i == 0) {\r
				if (so >= fs->csize) return FR_NO_FILESYSTEM;	/* Not found? */\r
				if (move_window(fs, clst2sect(fs, (DWORD)fs->dirbase) + so) != FR_OK) return FR_DISK_ERR;\r
				so++;\r
			}\r
			if (fs->win[i] == ET_BITMAP) break;			/* Is it a bitmap entry? */\r
			i = (i + SZDIRE) % SS(fs);	/* Next entry */\r
		}\r
		bcl = ld_dword(fs->win + i + 20);				/* Bitmap cluster */\r
		if (bcl < 2 || bcl >= fs->n_fatent) return FR_NO_FILESYSTEM;	/* (Wrong cluster#) */\r
		fs->bitbase = fs->database + fs->csize * (bcl - 2);	/* Bitmap sector */\r
		for (;;) {	/* Check if bitmap is contiguous */\r
			if (move_window(fs, fs->fatbase + bcl / (SS(fs) / 4)) != FR_OK) return FR_DISK_ERR;\r
			cv = ld_dword(fs->win + bcl % (SS(fs) / 4) * 4);\r
			if (cv == 0xFFFFFFFF) break;				/* Last link? */\r
			if (cv != ++bcl) return FR_NO_FILESYSTEM;	/* Fragmented bitmap? */\r
		}\r
\r
#if !FF_FS_READONLY\r
		fs->last_clst = fs->free_clst = 0xFFFFFFFF;		/* Initialize cluster allocation information */\r
#endif\r
		fmt = FS_EXFAT;			/* FAT sub-type */\r
	} else\r
#endif	/* FF_FS_EXFAT */\r
	{\r
		if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM;	/* (BPB_BytsPerSec must be equal to the physical sector size) */\r
\r
		fasize = ld_word(fs->win + BPB_FATSz16);		/* Number of sectors per FAT */\r
		if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);\r
		fs->fsize = fasize;\r
\r
		fs->n_fats = fs->win[BPB_NumFATs];				/* Number of FATs */\r
		if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM;	/* (Must be 1 or 2) */\r
		fasize *= fs->n_fats;							/* Number of sectors for FAT area */\r
\r
		fs->csize = fs->win[BPB_SecPerClus];			/* Cluster size */\r
		if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM;	/* (Must be power of 2) */\r
\r
		fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt);	/* Number of root directory entries */\r
		if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM;	/* (Must be sector aligned) */\r
\r
		tsect = ld_word(fs->win + BPB_TotSec16);		/* Number of sectors on the volume */\r
		if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);\r
\r
		nrsv = ld_word(fs->win + BPB_RsvdSecCnt);		/* Number of reserved sectors */\r
		if (nrsv == 0) return FR_NO_FILESYSTEM;			/* (Must not be 0) */\r
\r
		/* Determine the FAT sub type */\r
		sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE);	/* RSV + FAT + DIR */\r
		if (tsect < sysect) return FR_NO_FILESYSTEM;	/* (Invalid volume size) */\r
		nclst = (tsect - sysect) / fs->csize;			/* Number of clusters */\r
		if (nclst == 0) return FR_NO_FILESYSTEM;		/* (Invalid volume size) */\r
		fmt = 0;\r
		if (nclst <= MAX_FAT32) fmt = FS_FAT32;\r
		if (nclst <= MAX_FAT16) fmt = FS_FAT16;\r
		if (nclst <= MAX_FAT12) fmt = FS_FAT12;\r
		if (fmt == 0) return FR_NO_FILESYSTEM;\r
\r
		/* Boundaries and Limits */\r
		fs->n_fatent = nclst + 2;						/* Number of FAT entries */\r
		fs->volbase = bsect;							/* Volume start sector */\r
		fs->fatbase = bsect + nrsv; 					/* FAT start sector */\r
		fs->database = bsect + sysect;					/* Data start sector */\r
		if (fmt == FS_FAT32) {\r
			if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM;	/* (Must be FAT32 revision 0.0) */\r
			if (fs->n_rootdir != 0) return FR_NO_FILESYSTEM;	/* (BPB_RootEntCnt must be 0) */\r
			fs->dirbase = ld_dword(fs->win + BPB_RootClus32);	/* Root directory start cluster */\r
			szbfat = fs->n_fatent * 4;					/* (Needed FAT size) */\r
		} else {\r
			if (fs->n_rootdir == 0)	return FR_NO_FILESYSTEM;	/* (BPB_RootEntCnt must not be 0) */\r
			fs->dirbase = fs->fatbase + fasize;			/* Root directory start sector */\r
			szbfat = (fmt == FS_FAT16) ?				/* (Needed FAT size) */\r
				fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);\r
		}\r
		if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM;	/* (BPB_FATSz must not be less than the size needed) */\r
\r
#if !FF_FS_READONLY\r
		/* Get FSInfo if available */\r
		fs->last_clst = fs->free_clst = 0xFFFFFFFF;		/* Initialize cluster allocation information */\r
		fs->fsi_flag = 0x80;\r
#if (FF_FS_NOFSINFO & 3) != 3\r
		if (fmt == FS_FAT32				/* Allow to update FSInfo only if BPB_FSInfo32 == 1 */\r
			&& ld_word(fs->win + BPB_FSInfo32) == 1\r
			&& move_window(fs, bsect + 1) == FR_OK)\r
		{\r
			fs->fsi_flag = 0;\r
			if (ld_word(fs->win + BS_55AA) == 0xAA55	/* Load FSInfo data if available */\r
				&& ld_dword(fs->win + FSI_LeadSig) == 0x41615252\r
				&& ld_dword(fs->win + FSI_StrucSig) == 0x61417272)\r
			{\r
#if (FF_FS_NOFSINFO & 1) == 0\r
				fs->free_clst = ld_dword(fs->win + FSI_Free_Count);\r
#endif\r
#if (FF_FS_NOFSINFO & 2) == 0\r
				fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);\r
#endif\r
			}\r
		}\r
#endif	/* (FF_FS_NOFSINFO & 3) != 3 */\r
#endif	/* !FF_FS_READONLY */\r
	}\r
\r
	fs->fs_type = (BYTE)fmt;/* FAT sub-type (the filesystem object gets valid) */\r
	fs->id = ++Fsid;		/* Volume mount ID */\r
#if FF_USE_LFN == 1\r
	fs->lfnbuf = LfnBuf;	/* Static LFN working buffer */\r
#if FF_FS_EXFAT\r
	fs->dirbuf = DirBuf;	/* Static directory block scratchpad buuffer */\r
#endif\r
#endif\r
#if FF_FS_RPATH != 0\r
	fs->cdir = 0;			/* Initialize current directory */\r
#endif\r
#if FF_FS_LOCK				/* Clear file lock semaphores */\r
	clear_share(fs);\r
#endif\r
	return FR_OK;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Check if the file/directory object is valid or not                    */\r
/*-----------------------------------------------------------------------*/\r
\r
static FRESULT validate (	/* Returns FR_OK or FR_INVALID_OBJECT */\r
	FFOBJID* obj,			/* Pointer to the FFOBJID, the 1st member in the FIL/DIR structure, to check validity */\r
	FATFS** rfs				/* Pointer to pointer to the owner filesystem object to return */\r
)\r
{\r
	FRESULT res = FR_INVALID_OBJECT;\r
\r
\r
	if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) {	/* Test if the object is valid */\r
#if FF_FS_REENTRANT\r
		if (lock_volume(obj->fs, 0)) {	/* Take a grant to access the volume */\r
			if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the hosting phsical drive is kept initialized */\r
				res = FR_OK;\r
			} else {\r
				unlock_volume(obj->fs, FR_OK);	/* Invalidated volume, abort to access */\r
			}\r
		} else {	/* Could not take */\r
			res = FR_TIMEOUT;\r
		}\r
#else\r
		if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the hosting phsical drive is kept initialized */\r
			res = FR_OK;\r
		}\r
#endif\r
	}\r
	*rfs = (res == FR_OK) ? obj->fs : 0;	/* Return corresponding filesystem object if it is valid */\r
	return res;\r
}\r
\r
\r
\r
\r
/*---------------------------------------------------------------------------\r
\r
   Public Functions (FatFs API)\r
\r
----------------------------------------------------------------------------*/\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Mount/Unmount a Logical Drive                                         */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_mount (\r
	FATFS* fs,			/* Pointer to the filesystem object to be registered (NULL:unmount)*/\r
	const TCHAR* path,	/* Logical drive number to be mounted/unmounted */\r
	BYTE opt			/* Mount option: 0=Do not mount (delayed mount), 1=Mount immediately */\r
)\r
{\r
	FATFS *cfs;\r
	int vol;\r
	FRESULT res;\r
	const TCHAR *rp = path;\r
\r
\r
	/* Get volume ID (logical drive number) */\r
	vol = get_ldnumber(&rp);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
	cfs = FatFs[vol];			/* Pointer to the filesystem object of the volume */\r
\r
	if (cfs) {					/* Unregister current filesystem object if regsitered */\r
		FatFs[vol] = 0;\r
#if FF_FS_LOCK\r
		clear_share(cfs);\r
#endif\r
#if FF_FS_REENTRANT				/* Discard mutex of the current volume */\r
		ff_mutex_delete(vol);\r
#endif\r
		cfs->fs_type = 0;		/* Invalidate the filesystem object to be unregistered */\r
	}\r
\r
	if (fs) {					/* Register new filesystem object */\r
		fs->pdrv = LD2PD(vol);	/* Volume hosting physical drive */\r
#if FF_FS_REENTRANT				/* Create a volume mutex */\r
		fs->ldrv = (BYTE)vol;	/* Owner volume ID */\r
		if (!ff_mutex_create(vol)) return FR_INT_ERR;\r
#if FF_FS_LOCK\r
		if (SysLock == 0) {		/* Create a system mutex if needed */\r
			if (!ff_mutex_create(FF_VOLUMES)) {\r
				ff_mutex_delete(vol);\r
				return FR_INT_ERR;\r
			}\r
			SysLock = 1;		/* System mutex is ready */\r
		}\r
#endif\r
#endif\r
		fs->fs_type = 0;		/* Invalidate the new filesystem object */\r
		FatFs[vol] = fs;		/* Register new fs object */\r
	}\r
\r
	if (opt == 0) return FR_OK;	/* Do not mount now, it will be mounted in subsequent file functions */\r
\r
	res = mount_volume(&path, &fs, 0);	/* Force mounted the volume */\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Open or Create a File                                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_open (\r
	FIL* fp,			/* Pointer to the blank file object */\r
	const TCHAR* path,	/* Pointer to the file name */\r
	BYTE mode			/* Access mode and open mode flags */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	FATFS *fs;\r
#if !FF_FS_READONLY\r
	DWORD cl, bcs, clst, tm;\r
	LBA_t sc;\r
	FSIZE_t ofs;\r
#endif\r
	DEF_NAMBUF\r
\r
\r
	if (!fp) return FR_INVALID_OBJECT;\r
\r
	/* Get logical drive number */\r
	mode &= FF_FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND;\r
	res = mount_volume(&path, &fs, mode);\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
#if !FF_FS_READONLY	/* Read/Write configuration */\r
		if (res == FR_OK) {\r
			if (dj.fn[NSFLAG] & NS_NONAME) {	/* Origin directory itself? */\r
				res = FR_INVALID_NAME;\r
			}\r
#if FF_FS_LOCK\r
			else {\r
				res = chk_share(&dj, (mode & ~FA_READ) ? 1 : 0);	/* Check if the file can be used */\r
			}\r
#endif\r
		}\r
		/* Create or Open a file */\r
		if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\r
			if (res != FR_OK) {					/* No file, create new */\r
				if (res == FR_NO_FILE) {		/* There is no file to open, create a new entry */\r
#if FF_FS_LOCK\r
					res = enq_share() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;\r
#else\r
					res = dir_register(&dj);\r
#endif\r
				}\r
				mode |= FA_CREATE_ALWAYS;		/* File is created */\r
			}\r
			else {								/* Any object with the same name is already existing */\r
				if (dj.obj.attr & (AM_RDO | AM_DIR)) {	/* Cannot overwrite it (R/O or DIR) */\r
					res = FR_DENIED;\r
				} else {\r
					if (mode & FA_CREATE_NEW) res = FR_EXIST;	/* Cannot create as new file */\r
				}\r
			}\r
			if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) {	/* Truncate the file if overwrite mode */\r
#if FF_FS_EXFAT\r
				if (fs->fs_type == FS_EXFAT) {\r
					/* Get current allocation info */\r
					fp->obj.fs = fs;\r
					init_alloc_info(fs, &fp->obj);\r
					/* Set directory entry block initial state */\r
					memset(fs->dirbuf + 2, 0, 30);	/* Clear 85 entry except for NumSec */\r
					memset(fs->dirbuf + 38, 0, 26);	/* Clear C0 entry except for NumName and NameHash */\r
					fs->dirbuf[XDIR_Attr] = AM_ARC;\r
					st_dword(fs->dirbuf + XDIR_CrtTime, GET_FATTIME());\r
					fs->dirbuf[XDIR_GenFlags] = 1;\r
					res = store_xdir(&dj);\r
					if (res == FR_OK && fp->obj.sclust != 0) {	/* Remove the cluster chain if exist */\r
						res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r
						fs->last_clst = fp->obj.sclust - 1;		/* Reuse the cluster hole */\r
					}\r
				} else\r
#endif\r
				{\r
					/* Set directory entry initial state */\r
					tm = GET_FATTIME();					/* Set created time */\r
					st_dword(dj.dir + DIR_CrtTime, tm);\r
					st_dword(dj.dir + DIR_ModTime, tm);\r
					cl = ld_clust(fs, dj.dir);			/* Get current cluster chain */\r
					dj.dir[DIR_Attr] = AM_ARC;			/* Reset attribute */\r
					st_clust(fs, dj.dir, 0);			/* Reset file allocation info */\r
					st_dword(dj.dir + DIR_FileSize, 0);\r
					fs->wflag = 1;\r
					if (cl != 0) {						/* Remove the cluster chain if exist */\r
						sc = fs->winsect;\r
						res = remove_chain(&dj.obj, cl, 0);\r
						if (res == FR_OK) {\r
							res = move_window(fs, sc);\r
							fs->last_clst = cl - 1;		/* Reuse the cluster hole */\r
						}\r
					}\r
				}\r
			}\r
		}\r
		else {	/* Open an existing file */\r
			if (res == FR_OK) {					/* Is the object exsiting? */\r
				if (dj.obj.attr & AM_DIR) {		/* File open against a directory */\r
					res = FR_NO_FILE;\r
				} else {\r
					if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* Write mode open against R/O file */\r
						res = FR_DENIED;\r
					}\r
				}\r
			}\r
		}\r
		if (res == FR_OK) {\r
			if (mode & FA_CREATE_ALWAYS) mode |= FA_MODIFIED;	/* Set file change flag if created or overwritten */\r
			fp->dir_sect = fs->winsect;			/* Pointer to the directory entry */\r
			fp->dir_ptr = dj.dir;\r
#if FF_FS_LOCK\r
			fp->obj.lockid = inc_share(&dj, (mode & ~FA_READ) ? 1 : 0);	/* Lock the file for this session */\r
			if (fp->obj.lockid == 0) res = FR_INT_ERR;\r
#endif\r
		}\r
#else		/* R/O configuration */\r
		if (res == FR_OK) {\r
			if (dj.fn[NSFLAG] & NS_NONAME) {	/* Is it origin directory itself? */\r
				res = FR_INVALID_NAME;\r
			} else {\r
				if (dj.obj.attr & AM_DIR) {		/* Is it a directory? */\r
					res = FR_NO_FILE;\r
				}\r
			}\r
		}\r
#endif\r
\r
		if (res == FR_OK) {\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {\r
				fp->obj.c_scl = dj.obj.sclust;							/* Get containing directory info */\r
				fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r
				fp->obj.c_ofs = dj.blk_ofs;\r
				init_alloc_info(fs, &fp->obj);\r
			} else\r
#endif\r
			{\r
				fp->obj.sclust = ld_clust(fs, dj.dir);					/* Get object allocation info */\r
				fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);\r
			}\r
#if FF_USE_FASTSEEK\r
			fp->cltbl = 0;		/* Disable fast seek mode */\r
#endif\r
			fp->obj.fs = fs;	/* Validate the file object */\r
			fp->obj.id = fs->id;\r
			fp->flag = mode;	/* Set file access mode */\r
			fp->err = 0;		/* Clear error flag */\r
			fp->sect = 0;		/* Invalidate current data sector */\r
			fp->fptr = 0;		/* Set file pointer top of the file */\r
#if !FF_FS_READONLY\r
#if !FF_FS_TINY\r
			memset(fp->buf, 0, sizeof fp->buf);	/* Clear sector buffer */\r
#endif\r
			if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) {	/* Seek to end of file if FA_OPEN_APPEND is specified */\r
				fp->fptr = fp->obj.objsize;			/* Offset to seek */\r
				bcs = (DWORD)fs->csize * SS(fs);	/* Cluster size in byte */\r
				clst = fp->obj.sclust;				/* Follow the cluster chain */\r
				for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {\r
					clst = get_fat(&fp->obj, clst);\r
					if (clst <= 1) res = FR_INT_ERR;\r
					if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;\r
				}\r
				fp->clust = clst;\r
				if (res == FR_OK && ofs % SS(fs)) {	/* Fill sector buffer if not on the sector boundary */\r
					sc = clst2sect(fs, clst);\r
					if (sc == 0) {\r
						res = FR_INT_ERR;\r
					} else {\r
						fp->sect = sc + (DWORD)(ofs / SS(fs));\r
#if !FF_FS_TINY\r
						if (disk_read(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;\r
#endif\r
					}\r
				}\r
#if FF_FS_LOCK\r
				if (res != FR_OK) dec_share(fp->obj.lockid); /* Decrement file open counter if seek failed */\r
#endif\r
			}\r
#endif\r
		}\r
\r
		FREE_NAMBUF();\r
	}\r
\r
	if (res != FR_OK) fp->obj.fs = 0;	/* Invalidate file object on error */\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read File                                                             */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_read (\r
	FIL* fp, 	/* Open file to be read */\r
	void* buff,	/* Data buffer to store the read data */\r
	UINT btr,	/* Number of bytes to read */\r
	UINT* br	/* Number of bytes read */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD clst;\r
	LBA_t sect;\r
	FSIZE_t remain;\r
	UINT rcnt, cc, csect;\r
	BYTE *rbuff = (BYTE*)buff;\r
\r
\r
	*br = 0;	/* Clear read byte counter */\r
	res = validate(&fp->obj, &fs);				/* Check validity of the file object */\r
	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);	/* Check validity */\r
	if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r
	remain = fp->obj.objsize - fp->fptr;\r
	if (btr > remain) btr = (UINT)remain;		/* Truncate btr by remaining bytes */\r
\r
	for ( ; btr > 0; btr -= rcnt, *br += rcnt, rbuff += rcnt, fp->fptr += rcnt) {	/* Repeat until btr bytes read */\r
		if (fp->fptr % SS(fs) == 0) {			/* On the sector boundary? */\r
			csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1));	/* Sector offset in the cluster */\r
			if (csect == 0) {					/* On the cluster boundary? */\r
				if (fp->fptr == 0) {			/* On the top of the file? */\r
					clst = fp->obj.sclust;		/* Follow cluster chain from the origin */\r
				} else {						/* Middle or end of the file */\r
#if FF_USE_FASTSEEK\r
					if (fp->cltbl) {\r
						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */\r
					} else\r
#endif\r
					{\r
						clst = get_fat(&fp->obj, fp->clust);	/* Follow cluster chain on the FAT */\r
					}\r
				}\r
				if (clst < 2) ABORT(fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
				fp->clust = clst;				/* Update current cluster */\r
			}\r
			sect = clst2sect(fs, fp->clust);	/* Get current sector */\r
			if (sect == 0) ABORT(fs, FR_INT_ERR);\r
			sect += csect;\r
			cc = btr / SS(fs);					/* When remaining bytes >= sector size, */\r
			if (cc > 0) {						/* Read maximum contiguous sectors directly */\r
				if (csect + cc > fs->csize) {	/* Clip at cluster boundary */\r
					cc = fs->csize - csect;\r
				}\r
				if (disk_read(fs->pdrv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
#if !FF_FS_READONLY && FF_FS_MINIMIZE <= 2		/* Replace one of the read sectors with cached data if it contains a dirty sector */\r
#if FF_FS_TINY\r
				if (fs->wflag && fs->winsect - sect < cc) {\r
					memcpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));\r
				}\r
#else\r
				if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {\r
					memcpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));\r
				}\r
#endif\r
#endif\r
				rcnt = SS(fs) * cc;				/* Number of bytes transferred */\r
				continue;\r
			}\r
#if !FF_FS_TINY\r
			if (fp->sect != sect) {			/* Load data sector if not in cache */\r
#if !FF_FS_READONLY\r
				if (fp->flag & FA_DIRTY) {		/* Write-back dirty sector cache */\r
					if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
					fp->flag &= (BYTE)~FA_DIRTY;\r
				}\r
#endif\r
				if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);	/* Fill sector cache */\r
			}\r
#endif\r
			fp->sect = sect;\r
		}\r
		rcnt = SS(fs) - (UINT)fp->fptr % SS(fs);	/* Number of bytes remains in the sector */\r
		if (rcnt > btr) rcnt = btr;					/* Clip it by btr if needed */\r
#if FF_FS_TINY\r
		if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR);	/* Move sector window */\r
		memcpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt);	/* Extract partial sector */\r
#else\r
		memcpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt);	/* Extract partial sector */\r
#endif\r
	}\r
\r
	LEAVE_FF(fs, FR_OK);\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Write File                                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_write (\r
	FIL* fp,			/* Open file to be written */\r
	const void* buff,	/* Data to be written */\r
	UINT btw,			/* Number of bytes to write */\r
	UINT* bw			/* Number of bytes written */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD clst;\r
	LBA_t sect;\r
	UINT wcnt, cc, csect;\r
	const BYTE *wbuff = (const BYTE*)buff;\r
\r
\r
	*bw = 0;	/* Clear write byte counter */\r
	res = validate(&fp->obj, &fs);			/* Check validity of the file object */\r
	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);	/* Check validity */\r
	if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);	/* Check access mode */\r
\r
	/* Check fptr wrap-around (file size cannot reach 4 GiB at FAT volume) */\r
	if ((!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {\r
		btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);\r
	}\r
\r
	for ( ; btw > 0; btw -= wcnt, *bw += wcnt, wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize) {	/* Repeat until all data written */\r
		if (fp->fptr % SS(fs) == 0) {		/* On the sector boundary? */\r
			csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1);	/* Sector offset in the cluster */\r
			if (csect == 0) {				/* On the cluster boundary? */\r
				if (fp->fptr == 0) {		/* On the top of the file? */\r
					clst = fp->obj.sclust;	/* Follow from the origin */\r
					if (clst == 0) {		/* If no cluster is allocated, */\r
						clst = create_chain(&fp->obj, 0);	/* create a new cluster chain */\r
					}\r
				} else {					/* On the middle or end of the file */\r
#if FF_USE_FASTSEEK\r
					if (fp->cltbl) {\r
						clst = clmt_clust(fp, fp->fptr);	/* Get cluster# from the CLMT */\r
					} else\r
#endif\r
					{\r
						clst = create_chain(&fp->obj, fp->clust);	/* Follow or stretch cluster chain on the FAT */\r
					}\r
				}\r
				if (clst == 0) break;		/* Could not allocate a new cluster (disk full) */\r
				if (clst == 1) ABORT(fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
				fp->clust = clst;			/* Update current cluster */\r
				if (fp->obj.sclust == 0) fp->obj.sclust = clst;	/* Set start cluster if the first write */\r
			}\r
#if FF_FS_TINY\r
			if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);	/* Write-back sector cache */\r
#else\r
			if (fp->flag & FA_DIRTY) {		/* Write-back sector cache */\r
				if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
				fp->flag &= (BYTE)~FA_DIRTY;\r
			}\r
#endif\r
			sect = clst2sect(fs, fp->clust);	/* Get current sector */\r
			if (sect == 0) ABORT(fs, FR_INT_ERR);\r
			sect += csect;\r
			cc = btw / SS(fs);				/* When remaining bytes >= sector size, */\r
			if (cc > 0) {					/* Write maximum contiguous sectors directly */\r
				if (csect + cc > fs->csize) {	/* Clip at cluster boundary */\r
					cc = fs->csize - csect;\r
				}\r
				if (disk_write(fs->pdrv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
#if FF_FS_MINIMIZE <= 2\r
#if FF_FS_TINY\r
				if (fs->winsect - sect < cc) {	/* Refill sector cache if it gets invalidated by the direct write */\r
					memcpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));\r
					fs->wflag = 0;\r
				}\r
#else\r
				if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */\r
					memcpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));\r
					fp->flag &= (BYTE)~FA_DIRTY;\r
				}\r
#endif\r
#endif\r
				wcnt = SS(fs) * cc;		/* Number of bytes transferred */\r
				continue;\r
			}\r
#if FF_FS_TINY\r
			if (fp->fptr >= fp->obj.objsize) {	/* Avoid silly cache filling on the growing edge */\r
				if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);\r
				fs->winsect = sect;\r
			}\r
#else\r
			if (fp->sect != sect && 		/* Fill sector cache with file data */\r
				fp->fptr < fp->obj.objsize &&\r
				disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) {\r
					ABORT(fs, FR_DISK_ERR);\r
			}\r
#endif\r
			fp->sect = sect;\r
		}\r
		wcnt = SS(fs) - (UINT)fp->fptr % SS(fs);	/* Number of bytes remains in the sector */\r
		if (wcnt > btw) wcnt = btw;					/* Clip it by btw if needed */\r
#if FF_FS_TINY\r
		if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR);	/* Move sector window */\r
		memcpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt);	/* Fit data to the sector */\r
		fs->wflag = 1;\r
#else\r
		memcpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt);	/* Fit data to the sector */\r
		fp->flag |= FA_DIRTY;\r
#endif\r
	}\r
\r
	fp->flag |= FA_MODIFIED;				/* Set file change flag */\r
\r
	LEAVE_FF(fs, FR_OK);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Synchronize the File                                                  */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_sync (\r
	FIL* fp		/* Open file to be synced */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD tm;\r
	BYTE *dir;\r
\r
\r
	res = validate(&fp->obj, &fs);	/* Check validity of the file object */\r
	if (res == FR_OK) {\r
		if (fp->flag & FA_MODIFIED) {	/* Is there any change to the file? */\r
#if !FF_FS_TINY\r
			if (fp->flag & FA_DIRTY) {	/* Write-back cached data if needed */\r
				if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);\r
				fp->flag &= (BYTE)~FA_DIRTY;\r
			}\r
#endif\r
			/* Update the directory entry */\r
			tm = GET_FATTIME();				/* Modified time */\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {\r
				res = fill_first_frag(&fp->obj);	/* Fill first fragment on the FAT if needed */\r
				if (res == FR_OK) {\r
					res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF);	/* Fill last fragment on the FAT if needed */\r
				}\r
				if (res == FR_OK) {\r
					DIR dj;\r
					DEF_NAMBUF\r
\r
					INIT_NAMBUF(fs);\r
					res = load_obj_xdir(&dj, &fp->obj);	/* Load directory entry block */\r
					if (res == FR_OK) {\r
						fs->dirbuf[XDIR_Attr] |= AM_ARC;				/* Set archive attribute to indicate that the file has been changed */\r
						fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1;	/* Update file allocation information */\r
						st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);		/* Update start cluster */\r
						st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);		/* Update file size */\r
						st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);	/* (FatFs does not support Valid File Size feature) */\r
						st_dword(fs->dirbuf + XDIR_ModTime, tm);		/* Update modified time */\r
						fs->dirbuf[XDIR_ModTime10] = 0;\r
						st_dword(fs->dirbuf + XDIR_AccTime, 0);\r
						res = store_xdir(&dj);	/* Restore it to the directory */\r
						if (res == FR_OK) {\r
							res = sync_fs(fs);\r
							fp->flag &= (BYTE)~FA_MODIFIED;\r
						}\r
					}\r
					FREE_NAMBUF();\r
				}\r
			} else\r
#endif\r
			{\r
				res = move_window(fs, fp->dir_sect);\r
				if (res == FR_OK) {\r
					dir = fp->dir_ptr;\r
					dir[DIR_Attr] |= AM_ARC;						/* Set archive attribute to indicate that the file has been changed */\r
					st_clust(fp->obj.fs, dir, fp->obj.sclust);		/* Update file allocation information  */\r
					st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize);	/* Update file size */\r
					st_dword(dir + DIR_ModTime, tm);				/* Update modified time */\r
					st_word(dir + DIR_LstAccDate, 0);\r
					fs->wflag = 1;\r
					res = sync_fs(fs);					/* Restore it to the directory */\r
					fp->flag &= (BYTE)~FA_MODIFIED;\r
				}\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Close File                                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_close (\r
	FIL* fp		/* Open file to be closed */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
\r
#if !FF_FS_READONLY\r
	res = f_sync(fp);					/* Flush cached data */\r
	if (res == FR_OK)\r
#endif\r
	{\r
		res = validate(&fp->obj, &fs);	/* Lock volume */\r
		if (res == FR_OK) {\r
#if FF_FS_LOCK\r
			res = dec_share(fp->obj.lockid);		/* Decrement file open counter */\r
			if (res == FR_OK) fp->obj.fs = 0;	/* Invalidate file object */\r
#else\r
			fp->obj.fs = 0;	/* Invalidate file object */\r
#endif\r
#if FF_FS_REENTRANT\r
			unlock_volume(fs, FR_OK);		/* Unlock volume */\r
#endif\r
		}\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
#if FF_FS_RPATH >= 1\r
/*-----------------------------------------------------------------------*/\r
/* Change Current Directory or Current Drive, Get Current Directory      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_chdrive (\r
	const TCHAR* path		/* Drive number to set */\r
)\r
{\r
	int vol;\r
\r
\r
	/* Get logical drive number */\r
	vol = get_ldnumber(&path);\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
	CurrVol = (BYTE)vol;	/* Set it as current volume */\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
FRESULT f_chdir (\r
	const TCHAR* path	/* Pointer to the directory path */\r
)\r
{\r
#if FF_STR_VOLUME_ID == 2\r
	UINT i;\r
#endif\r
	FRESULT res;\r
	DIR dj;\r
	FATFS *fs;\r
	DEF_NAMBUF\r
\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &fs, 0);\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);		/* Follow the path */\r
		if (res == FR_OK) {					/* Follow completed */\r
			if (dj.fn[NSFLAG] & NS_NONAME) {	/* Is it the start directory itself? */\r
				fs->cdir = dj.obj.sclust;\r
#if FF_FS_EXFAT\r
				if (fs->fs_type == FS_EXFAT) {\r
					fs->cdc_scl = dj.obj.c_scl;\r
					fs->cdc_size = dj.obj.c_size;\r
					fs->cdc_ofs = dj.obj.c_ofs;\r
				}\r
#endif\r
			} else {\r
				if (dj.obj.attr & AM_DIR) {	/* It is a sub-directory */\r
#if FF_FS_EXFAT\r
					if (fs->fs_type == FS_EXFAT) {\r
						fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus);		/* Sub-directory cluster */\r
						fs->cdc_scl = dj.obj.sclust;						/* Save containing directory information */\r
						fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r
						fs->cdc_ofs = dj.blk_ofs;\r
					} else\r
#endif\r
					{\r
						fs->cdir = ld_clust(fs, dj.dir);					/* Sub-directory cluster */\r
					}\r
				} else {\r
					res = FR_NO_PATH;		/* Reached but a file */\r
				}\r
			}\r
		}\r
		FREE_NAMBUF();\r
		if (res == FR_NO_FILE) res = FR_NO_PATH;\r
#if FF_STR_VOLUME_ID == 2	/* Also current drive is changed if in Unix style volume ID */\r
		if (res == FR_OK) {\r
			for (i = FF_VOLUMES - 1; i && fs != FatFs[i]; i--) ;	/* Set current drive */\r
			CurrVol = (BYTE)i;\r
		}\r
#endif\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
#if FF_FS_RPATH >= 2\r
FRESULT f_getcwd (\r
	TCHAR* buff,	/* Pointer to the directory path */\r
	UINT len		/* Size of buff in unit of TCHAR */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	FATFS *fs;\r
	UINT i, n;\r
	DWORD ccl;\r
	TCHAR *tp = buff;\r
#if FF_VOLUMES >= 2\r
	UINT vl;\r
#if FF_STR_VOLUME_ID\r
	const char *vp;\r
#endif\r
#endif\r
	FILINFO fno;\r
	DEF_NAMBUF\r
\r
\r
	/* Get logical drive */\r
	buff[0] = 0;	/* Set null string to get current volume */\r
	res = mount_volume((const TCHAR**)&buff, &fs, 0);	/* Get current volume */\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
\r
		/* Follow parent directories and create the path */\r
		i = len;			/* Bottom of buffer (directory stack base) */\r
		if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {	/* (Cannot do getcwd on exFAT and returns root path) */\r
			dj.obj.sclust = fs->cdir;				/* Start to follow upper directory from current directory */\r
			while ((ccl = dj.obj.sclust) != 0) {	/* Repeat while current directory is a sub-directory */\r
				res = dir_sdi(&dj, 1 * SZDIRE);	/* Get parent directory */\r
				if (res != FR_OK) break;\r
				res = move_window(fs, dj.sect);\r
				if (res != FR_OK) break;\r
				dj.obj.sclust = ld_clust(fs, dj.dir);	/* Goto parent directory */\r
				res = dir_sdi(&dj, 0);\r
				if (res != FR_OK) break;\r
				do {							/* Find the entry links to the child directory */\r
					res = DIR_READ_FILE(&dj);\r
					if (res != FR_OK) break;\r
					if (ccl == ld_clust(fs, dj.dir)) break;	/* Found the entry */\r
					res = dir_next(&dj, 0);\r
				} while (res == FR_OK);\r
				if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */\r
				if (res != FR_OK) break;\r
				get_fileinfo(&dj, &fno);		/* Get the directory name and push it to the buffer */\r
				for (n = 0; fno.fname[n]; n++) ;	/* Name length */\r
				if (i < n + 1) {	/* Insufficient space to store the path name? */\r
					res = FR_NOT_ENOUGH_CORE; break;\r
				}\r
				while (n) buff[--i] = fno.fname[--n];	/* Stack the name */\r
				buff[--i] = '/';\r
			}\r
		}\r
		if (res == FR_OK) {\r
			if (i == len) buff[--i] = '/';	/* Is it the root-directory? */\r
#if FF_VOLUMES >= 2			/* Put drive prefix */\r
			vl = 0;\r
#if FF_STR_VOLUME_ID >= 1	/* String volume ID */\r
			for (n = 0, vp = (const char*)VolumeStr[CurrVol]; vp[n]; n++) ;\r
			if (i >= n + 2) {\r
				if (FF_STR_VOLUME_ID == 2) *tp++ = (TCHAR)'/';\r
				for (vl = 0; vl < n; *tp++ = (TCHAR)vp[vl], vl++) ;\r
				if (FF_STR_VOLUME_ID == 1) *tp++ = (TCHAR)':';\r
				vl++;\r
			}\r
#else						/* Numeric volume ID */\r
			if (i >= 3) {\r
				*tp++ = (TCHAR)'0' + CurrVol;\r
				*tp++ = (TCHAR)':';\r
				vl = 2;\r
			}\r
#endif\r
			if (vl == 0) res = FR_NOT_ENOUGH_CORE;\r
#endif\r
			/* Add current directory path */\r
			if (res == FR_OK) {\r
				do {	/* Copy stacked path string */\r
					*tp++ = buff[i++];\r
				} while (i < len);\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	*tp = 0;\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif /* FF_FS_RPATH >= 2 */\r
#endif /* FF_FS_RPATH >= 1 */\r
\r
\r
\r
#if FF_FS_MINIMIZE <= 2\r
/*-----------------------------------------------------------------------*/\r
/* Seek File Read/Write Pointer                                          */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_lseek (\r
	FIL* fp,		/* Pointer to the file object */\r
	FSIZE_t ofs		/* File pointer from top of file */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD clst, bcs;\r
	LBA_t nsect;\r
	FSIZE_t ifptr;\r
#if FF_USE_FASTSEEK\r
	DWORD cl, pcl, ncl, tcl, tlen, ulen;\r
	DWORD *tbl;\r
	LBA_t dsc;\r
#endif\r
\r
	res = validate(&fp->obj, &fs);		/* Check validity of the file object */\r
	if (res == FR_OK) res = (FRESULT)fp->err;\r
#if FF_FS_EXFAT && !FF_FS_READONLY\r
	if (res == FR_OK && fs->fs_type == FS_EXFAT) {\r
		res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF);	/* Fill last fragment on the FAT if needed */\r
	}\r
#endif\r
	if (res != FR_OK) LEAVE_FF(fs, res);\r
\r
#if FF_USE_FASTSEEK\r
	if (fp->cltbl) {	/* Fast seek */\r
		if (ofs == CREATE_LINKMAP) {	/* Create CLMT */\r
			tbl = fp->cltbl;\r
			tlen = *tbl++; ulen = 2;	/* Given table size and required table size */\r
			cl = fp->obj.sclust;		/* Origin of the chain */\r
			if (cl != 0) {\r
				do {\r
					/* Get a fragment */\r
					tcl = cl; ncl = 0; ulen += 2;	/* Top, length and used items */\r
					do {\r
						pcl = cl; ncl++;\r
						cl = get_fat(&fp->obj, cl);\r
						if (cl <= 1) ABORT(fs, FR_INT_ERR);\r
						if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
					} while (cl == pcl + 1);\r
					if (ulen <= tlen) {		/* Store the length and top of the fragment */\r
						*tbl++ = ncl; *tbl++ = tcl;\r
					}\r
				} while (cl < fs->n_fatent);	/* Repeat until end of chain */\r
			}\r
			*fp->cltbl = ulen;	/* Number of items used */\r
			if (ulen <= tlen) {\r
				*tbl = 0;		/* Terminate table */\r
			} else {\r
				res = FR_NOT_ENOUGH_CORE;	/* Given table size is smaller than required */\r
			}\r
		} else {						/* Fast seek */\r
			if (ofs > fp->obj.objsize) ofs = fp->obj.objsize;	/* Clip offset at the file size */\r
			fp->fptr = ofs;				/* Set file pointer */\r
			if (ofs > 0) {\r
				fp->clust = clmt_clust(fp, ofs - 1);\r
				dsc = clst2sect(fs, fp->clust);\r
				if (dsc == 0) ABORT(fs, FR_INT_ERR);\r
				dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);\r
				if (fp->fptr % SS(fs) && dsc != fp->sect) {	/* Refill sector cache if needed */\r
#if !FF_FS_TINY\r
#if !FF_FS_READONLY\r
					if (fp->flag & FA_DIRTY) {		/* Write-back dirty sector cache */\r
						if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
						fp->flag &= (BYTE)~FA_DIRTY;\r
					}\r
#endif\r
					if (disk_read(fs->pdrv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);	/* Load current sector */\r
#endif\r
					fp->sect = dsc;\r
				}\r
			}\r
		}\r
	} else\r
#endif\r
\r
	/* Normal Seek */\r
	{\r
#if FF_FS_EXFAT\r
		if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF;	/* Clip at 4 GiB - 1 if at FATxx */\r
#endif\r
		if (ofs > fp->obj.objsize && (FF_FS_READONLY || !(fp->flag & FA_WRITE))) {	/* In read-only mode, clip offset with the file size */\r
			ofs = fp->obj.objsize;\r
		}\r
		ifptr = fp->fptr;\r
		fp->fptr = nsect = 0;\r
		if (ofs > 0) {\r
			bcs = (DWORD)fs->csize * SS(fs);	/* Cluster size (byte) */\r
			if (ifptr > 0 &&\r
				(ofs - 1) / bcs >= (ifptr - 1) / bcs) {	/* When seek to same or following cluster, */\r
				fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1);	/* start from the current cluster */\r
				ofs -= fp->fptr;\r
				clst = fp->clust;\r
			} else {									/* When seek to back cluster, */\r
				clst = fp->obj.sclust;					/* start from the first cluster */\r
#if !FF_FS_READONLY\r
				if (clst == 0) {						/* If no cluster chain, create a new chain */\r
					clst = create_chain(&fp->obj, 0);\r
					if (clst == 1) ABORT(fs, FR_INT_ERR);\r
					if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
					fp->obj.sclust = clst;\r
				}\r
#endif\r
				fp->clust = clst;\r
			}\r
			if (clst != 0) {\r
				while (ofs > bcs) {						/* Cluster following loop */\r
					ofs -= bcs; fp->fptr += bcs;\r
#if !FF_FS_READONLY\r
					if (fp->flag & FA_WRITE) {			/* Check if in write mode or not */\r
						if (FF_FS_EXFAT && fp->fptr > fp->obj.objsize) {	/* No FAT chain object needs correct objsize to generate FAT value */\r
							fp->obj.objsize = fp->fptr;\r
							fp->flag |= FA_MODIFIED;\r
						}\r
						clst = create_chain(&fp->obj, clst);	/* Follow chain with forceed stretch */\r
						if (clst == 0) {				/* Clip file size in case of disk full */\r
							ofs = 0; break;\r
						}\r
					} else\r
#endif\r
					{\r
						clst = get_fat(&fp->obj, clst);	/* Follow cluster chain if not in write mode */\r
					}\r
					if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
					if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);\r
					fp->clust = clst;\r
				}\r
				fp->fptr += ofs;\r
				if (ofs % SS(fs)) {\r
					nsect = clst2sect(fs, clst);	/* Current sector */\r
					if (nsect == 0) ABORT(fs, FR_INT_ERR);\r
					nsect += (DWORD)(ofs / SS(fs));\r
				}\r
			}\r
		}\r
		if (!FF_FS_READONLY && fp->fptr > fp->obj.objsize) {	/* Set file change flag if the file size is extended */\r
			fp->obj.objsize = fp->fptr;\r
			fp->flag |= FA_MODIFIED;\r
		}\r
		if (fp->fptr % SS(fs) && nsect != fp->sect) {	/* Fill sector cache if needed */\r
#if !FF_FS_TINY\r
#if !FF_FS_READONLY\r
			if (fp->flag & FA_DIRTY) {			/* Write-back dirty sector cache */\r
				if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
				fp->flag &= (BYTE)~FA_DIRTY;\r
			}\r
#endif\r
			if (disk_read(fs->pdrv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);	/* Fill sector cache */\r
#endif\r
			fp->sect = nsect;\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
#if FF_FS_MINIMIZE <= 1\r
/*-----------------------------------------------------------------------*/\r
/* Create a Directory Object                                             */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_opendir (\r
	DIR* dp,			/* Pointer to directory object to create */\r
	const TCHAR* path	/* Pointer to the directory path */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DEF_NAMBUF\r
\r
\r
	if (!dp) return FR_INVALID_OBJECT;\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &fs, 0);\r
	if (res == FR_OK) {\r
		dp->obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(dp, path);			/* Follow the path to the directory */\r
		if (res == FR_OK) {						/* Follow completed */\r
			if (!(dp->fn[NSFLAG] & NS_NONAME)) {	/* It is not the origin directory itself */\r
				if (dp->obj.attr & AM_DIR) {		/* This object is a sub-directory */\r
#if FF_FS_EXFAT\r
					if (fs->fs_type == FS_EXFAT) {\r
						dp->obj.c_scl = dp->obj.sclust;	/* Get containing directory inforamation */\r
						dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat;\r
						dp->obj.c_ofs = dp->blk_ofs;\r
						init_alloc_info(fs, &dp->obj);	/* Get object allocation info */\r
					} else\r
#endif\r
					{\r
						dp->obj.sclust = ld_clust(fs, dp->dir);	/* Get object allocation info */\r
					}\r
				} else {						/* This object is a file */\r
					res = FR_NO_PATH;\r
				}\r
			}\r
			if (res == FR_OK) {\r
				dp->obj.id = fs->id;\r
				res = dir_sdi(dp, 0);			/* Rewind directory */\r
#if FF_FS_LOCK\r
				if (res == FR_OK) {\r
					if (dp->obj.sclust != 0) {\r
						dp->obj.lockid = inc_share(dp, 0);	/* Lock the sub directory */\r
						if (!dp->obj.lockid) res = FR_TOO_MANY_OPEN_FILES;\r
					} else {\r
						dp->obj.lockid = 0;	/* Root directory need not to be locked */\r
					}\r
				}\r
#endif\r
			}\r
		}\r
		FREE_NAMBUF();\r
		if (res == FR_NO_FILE) res = FR_NO_PATH;\r
	}\r
	if (res != FR_OK) dp->obj.fs = 0;		/* Invalidate the directory object if function failed */\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Close Directory                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_closedir (\r
	DIR *dp		/* Pointer to the directory object to be closed */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
\r
\r
	res = validate(&dp->obj, &fs);	/* Check validity of the file object */\r
	if (res == FR_OK) {\r
#if FF_FS_LOCK\r
		if (dp->obj.lockid) res = dec_share(dp->obj.lockid);	/* Decrement sub-directory open counter */\r
		if (res == FR_OK) dp->obj.fs = 0;	/* Invalidate directory object */\r
#else\r
		dp->obj.fs = 0;	/* Invalidate directory object */\r
#endif\r
#if FF_FS_REENTRANT\r
		unlock_volume(fs, FR_OK);	/* Unlock volume */\r
#endif\r
	}\r
	return res;\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read Directory Entries in Sequence                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_readdir (\r
	DIR* dp,			/* Pointer to the open directory object */\r
	FILINFO* fno		/* Pointer to file information to return */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DEF_NAMBUF\r
\r
\r
	res = validate(&dp->obj, &fs);	/* Check validity of the directory object */\r
	if (res == FR_OK) {\r
		if (!fno) {\r
			res = dir_sdi(dp, 0);		/* Rewind the directory object */\r
		} else {\r
			INIT_NAMBUF(fs);\r
			res = DIR_READ_FILE(dp);		/* Read an item */\r
			if (res == FR_NO_FILE) res = FR_OK;	/* Ignore end of directory */\r
			if (res == FR_OK) {				/* A valid entry is found */\r
				get_fileinfo(dp, fno);		/* Get the object information */\r
				res = dir_next(dp, 0);		/* Increment index for next */\r
				if (res == FR_NO_FILE) res = FR_OK;	/* Ignore end of directory now */\r
			}\r
			FREE_NAMBUF();\r
		}\r
	}\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
#if FF_USE_FIND\r
/*-----------------------------------------------------------------------*/\r
/* Find Next File                                                        */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_findnext (\r
	DIR* dp,		/* Pointer to the open directory object */\r
	FILINFO* fno	/* Pointer to the file information structure */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	for (;;) {\r
		res = f_readdir(dp, fno);		/* Get a directory item */\r
		if (res != FR_OK || !fno || !fno->fname[0]) break;	/* Terminate if any error or end of directory */\r
		if (pattern_match(dp->pat, fno->fname, 0, FIND_RECURS)) break;		/* Test for the file name */\r
#if FF_USE_LFN && FF_USE_FIND == 2\r
		if (pattern_match(dp->pat, fno->altname, 0, FIND_RECURS)) break;	/* Test for alternative name if exist */\r
#endif\r
	}\r
	return res;\r
}\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Find First File                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_findfirst (\r
	DIR* dp,				/* Pointer to the blank directory object */\r
	FILINFO* fno,			/* Pointer to the file information structure */\r
	const TCHAR* path,		/* Pointer to the directory to open */\r
	const TCHAR* pattern	/* Pointer to the matching pattern */\r
)\r
{\r
	FRESULT res;\r
\r
\r
	dp->pat = pattern;		/* Save pointer to pattern string */\r
	res = f_opendir(dp, path);		/* Open the target directory */\r
	if (res == FR_OK) {\r
		res = f_findnext(dp, fno);	/* Find the first item */\r
	}\r
	return res;\r
}\r
\r
#endif	/* FF_USE_FIND */\r
\r
\r
\r
#if FF_FS_MINIMIZE == 0\r
/*-----------------------------------------------------------------------*/\r
/* Get File Status                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_stat (\r
	const TCHAR* path,	/* Pointer to the file path */\r
	FILINFO* fno		/* Pointer to file information to return */\r
)\r
{\r
	FRESULT res;\r
	DIR dj;\r
	DEF_NAMBUF\r
\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &dj.obj.fs, 0);\r
	if (res == FR_OK) {\r
		INIT_NAMBUF(dj.obj.fs);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		if (res == FR_OK) {				/* Follow completed */\r
			if (dj.fn[NSFLAG] & NS_NONAME) {	/* It is origin directory */\r
				res = FR_INVALID_NAME;\r
			} else {							/* Found an object */\r
				if (fno) get_fileinfo(&dj, fno);\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(dj.obj.fs, res);\r
}\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Get Number of Free Clusters                                           */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_getfree (\r
	const TCHAR* path,	/* Logical drive number */\r
	DWORD* nclst,		/* Pointer to a variable to return number of free clusters */\r
	FATFS** fatfs		/* Pointer to return pointer to corresponding filesystem object */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD nfree, clst, stat;\r
	LBA_t sect;\r
	UINT i;\r
	FFOBJID obj;\r
\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &fs, 0);\r
	if (res == FR_OK) {\r
		*fatfs = fs;				/* Return ptr to the fs object */\r
		/* If free_clst is valid, return it without full FAT scan */\r
		if (fs->free_clst <= fs->n_fatent - 2) {\r
			*nclst = fs->free_clst;\r
		} else {\r
			/* Scan FAT to obtain number of free clusters */\r
			nfree = 0;\r
			if (fs->fs_type == FS_FAT12) {	/* FAT12: Scan bit field FAT entries */\r
				clst = 2; obj.fs = fs;\r
				do {\r
					stat = get_fat(&obj, clst);\r
					if (stat == 0xFFFFFFFF) {\r
						res = FR_DISK_ERR; break;\r
					}\r
					if (stat == 1) {\r
						res = FR_INT_ERR; break;\r
					}\r
					if (stat == 0) nfree++;\r
				} while (++clst < fs->n_fatent);\r
			} else {\r
#if FF_FS_EXFAT\r
				if (fs->fs_type == FS_EXFAT) {	/* exFAT: Scan allocation bitmap */\r
					BYTE bm;\r
					UINT b;\r
\r
					clst = fs->n_fatent - 2;	/* Number of clusters */\r
					sect = fs->bitbase;			/* Bitmap sector */\r
					i = 0;						/* Offset in the sector */\r
					do {	/* Counts numbuer of bits with zero in the bitmap */\r
						if (i == 0) {	/* New sector? */\r
							res = move_window(fs, sect++);\r
							if (res != FR_OK) break;\r
						}\r
						for (b = 8, bm = ~fs->win[i]; b && clst; b--, clst--) {\r
							nfree += bm & 1;\r
							bm >>= 1;\r
						}\r
						i = (i + 1) % SS(fs);\r
					} while (clst);\r
				} else\r
#endif\r
				{	/* FAT16/32: Scan WORD/DWORD FAT entries */\r
					clst = fs->n_fatent;	/* Number of entries */\r
					sect = fs->fatbase;		/* Top of the FAT */\r
					i = 0;					/* Offset in the sector */\r
					do {	/* Counts numbuer of entries with zero in the FAT */\r
						if (i == 0) {	/* New sector? */\r
							res = move_window(fs, sect++);\r
							if (res != FR_OK) break;\r
						}\r
						if (fs->fs_type == FS_FAT16) {\r
							if (ld_word(fs->win + i) == 0) nfree++;\r
							i += 2;\r
						} else {\r
							if ((ld_dword(fs->win + i) & 0x0FFFFFFF) == 0) nfree++;\r
							i += 4;\r
						}\r
						i %= SS(fs);\r
					} while (--clst);\r
				}\r
			}\r
			if (res == FR_OK) {		/* Update parameters if succeeded */\r
				*nclst = nfree;			/* Return the free clusters */\r
				fs->free_clst = nfree;	/* Now free_clst is valid */\r
				fs->fsi_flag |= 1;		/* FAT32: FSInfo is to be updated */\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Truncate File                                                         */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_truncate (\r
	FIL* fp		/* Pointer to the file object */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD ncl;\r
\r
\r
	res = validate(&fp->obj, &fs);	/* Check validity of the file object */\r
	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r
	if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);	/* Check access mode */\r
\r
	if (fp->fptr < fp->obj.objsize) {	/* Process when fptr is not on the eof */\r
		if (fp->fptr == 0) {	/* When set file size to zero, remove entire cluster chain */\r
			res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r
			fp->obj.sclust = 0;\r
		} else {				/* When truncate a part of the file, remove remaining clusters */\r
			ncl = get_fat(&fp->obj, fp->clust);\r
			res = FR_OK;\r
			if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
			if (ncl == 1) res = FR_INT_ERR;\r
			if (res == FR_OK && ncl < fs->n_fatent) {\r
				res = remove_chain(&fp->obj, ncl, fp->clust);\r
			}\r
		}\r
		fp->obj.objsize = fp->fptr;	/* Set file size to current read/write point */\r
		fp->flag |= FA_MODIFIED;\r
#if !FF_FS_TINY\r
		if (res == FR_OK && (fp->flag & FA_DIRTY)) {\r
			if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) {\r
				res = FR_DISK_ERR;\r
			} else {\r
				fp->flag &= (BYTE)~FA_DIRTY;\r
			}\r
		}\r
#endif\r
		if (res != FR_OK) ABORT(fs, res);\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Delete a File/Directory                                               */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_unlink (\r
	const TCHAR* path		/* Pointer to the file or directory path */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj, sdj;\r
	DWORD dclst = 0;\r
#if FF_FS_EXFAT\r
	FFOBJID obj;\r
#endif\r
	DEF_NAMBUF\r
\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &fs, FA_WRITE);\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);		/* Follow the file path */\r
		if (FF_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {\r
			res = FR_INVALID_NAME;			/* Cannot remove dot entry */\r
		}\r
#if FF_FS_LOCK\r
		if (res == FR_OK) res = chk_share(&dj, 2);	/* Check if it is an open object */\r
#endif\r
		if (res == FR_OK) {					/* The object is accessible */\r
			if (dj.fn[NSFLAG] & NS_NONAME) {\r
				res = FR_INVALID_NAME;		/* Cannot remove the origin directory */\r
			} else {\r
				if (dj.obj.attr & AM_RDO) {\r
					res = FR_DENIED;		/* Cannot remove R/O object */\r
				}\r
			}\r
			if (res == FR_OK) {\r
#if FF_FS_EXFAT\r
				obj.fs = fs;\r
				if (fs->fs_type == FS_EXFAT) {\r
					init_alloc_info(fs, &obj);\r
					dclst = obj.sclust;\r
				} else\r
#endif\r
				{\r
					dclst = ld_clust(fs, dj.dir);\r
				}\r
				if (dj.obj.attr & AM_DIR) {			/* Is it a sub-directory? */\r
#if FF_FS_RPATH != 0\r
					if (dclst == fs->cdir) {	 	/* Is it the current directory? */\r
						res = FR_DENIED;\r
					} else\r
#endif\r
					{\r
						sdj.obj.fs = fs;			/* Open the sub-directory */\r
						sdj.obj.sclust = dclst;\r
#if FF_FS_EXFAT\r
						if (fs->fs_type == FS_EXFAT) {\r
							sdj.obj.objsize = obj.objsize;\r
							sdj.obj.stat = obj.stat;\r
						}\r
#endif\r
						res = dir_sdi(&sdj, 0);\r
						if (res == FR_OK) {\r
							res = DIR_READ_FILE(&sdj);			/* Test if the directory is empty */\r
							if (res == FR_OK) res = FR_DENIED;	/* Not empty? */\r
							if (res == FR_NO_FILE) res = FR_OK;	/* Empty? */\r
						}\r
					}\r
				}\r
			}\r
			if (res == FR_OK) {\r
				res = dir_remove(&dj);			/* Remove the directory entry */\r
				if (res == FR_OK && dclst != 0) {	/* Remove the cluster chain if exist */\r
#if FF_FS_EXFAT\r
					res = remove_chain(&obj, dclst, 0);\r
#else\r
					res = remove_chain(&dj.obj, dclst, 0);\r
#endif\r
				}\r
				if (res == FR_OK) res = sync_fs(fs);\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Create a Directory                                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_mkdir (\r
	const TCHAR* path		/* Pointer to the directory path */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj;\r
	FFOBJID sobj;\r
	DWORD dcl, pcl, tm;\r
	DEF_NAMBUF\r
\r
\r
	res = mount_volume(&path, &fs, FA_WRITE);	/* Get logical drive */\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);			/* Follow the file path */\r
		if (res == FR_OK) res = FR_EXIST;		/* Name collision? */\r
		if (FF_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) {	/* Invalid name? */\r
			res = FR_INVALID_NAME;\r
		}\r
		if (res == FR_NO_FILE) {				/* It is clear to create a new directory */\r
			sobj.fs = fs;						/* New object id to create a new chain */\r
			dcl = create_chain(&sobj, 0);		/* Allocate a cluster for the new directory */\r
			res = FR_OK;\r
			if (dcl == 0) res = FR_DENIED;		/* No space to allocate a new cluster? */\r
			if (dcl == 1) res = FR_INT_ERR;		/* Any insanity? */\r
			if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;	/* Disk error? */\r
			tm = GET_FATTIME();\r
			if (res == FR_OK) {\r
				res = dir_clear(fs, dcl);		/* Clean up the new table */\r
				if (res == FR_OK) {\r
					if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) {	/* Create dot entries (FAT only) */\r
						memset(fs->win + DIR_Name, ' ', 11);	/* Create "." entry */\r
						fs->win[DIR_Name] = '.';\r
						fs->win[DIR_Attr] = AM_DIR;\r
						st_dword(fs->win + DIR_ModTime, tm);\r
						st_clust(fs, fs->win, dcl);\r
						memcpy(fs->win + SZDIRE, fs->win, SZDIRE);	/* Create ".." entry */\r
						fs->win[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;\r
						st_clust(fs, fs->win + SZDIRE, pcl);\r
						fs->wflag = 1;\r
					}\r
					res = dir_register(&dj);	/* Register the object to the parent directoy */\r
				}\r
			}\r
			if (res == FR_OK) {\r
#if FF_FS_EXFAT\r
				if (fs->fs_type == FS_EXFAT) {	/* Initialize directory entry block */\r
					st_dword(fs->dirbuf + XDIR_ModTime, tm);	/* Created time */\r
					st_dword(fs->dirbuf + XDIR_FstClus, dcl);	/* Table start cluster */\r
					st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)fs->csize * SS(fs));	/* Directory size needs to be valid */\r
					st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)fs->csize * SS(fs));\r
					fs->dirbuf[XDIR_GenFlags] = 3;				/* Initialize the object flag */\r
					fs->dirbuf[XDIR_Attr] = AM_DIR;				/* Attribute */\r
					res = store_xdir(&dj);\r
				} else\r
#endif\r
				{\r
					st_dword(dj.dir + DIR_ModTime, tm);	/* Created time */\r
					st_clust(fs, dj.dir, dcl);			/* Table start cluster */\r
					dj.dir[DIR_Attr] = AM_DIR;			/* Attribute */\r
					fs->wflag = 1;\r
				}\r
				if (res == FR_OK) {\r
					res = sync_fs(fs);\r
				}\r
			} else {\r
				remove_chain(&sobj, dcl, 0);		/* Could not register, remove the allocated cluster */\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Rename a File/Directory                                               */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_rename (\r
	const TCHAR* path_old,	/* Pointer to the object name to be renamed */\r
	const TCHAR* path_new	/* Pointer to the new name */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR djo, djn;\r
	BYTE buf[FF_FS_EXFAT ? SZDIRE * 2 : SZDIRE], *dir;\r
	LBA_t sect;\r
	DEF_NAMBUF\r
\r
\r
	get_ldnumber(&path_new);						/* Snip the drive number of new name off */\r
	res = mount_volume(&path_old, &fs, FA_WRITE);	/* Get logical drive of the old object */\r
	if (res == FR_OK) {\r
		djo.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&djo, path_old);			/* Check old object */\r
		if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;	/* Check validity of name */\r
#if FF_FS_LOCK\r
		if (res == FR_OK) {\r
			res = chk_share(&djo, 2);\r
		}\r
#endif\r
		if (res == FR_OK) {					/* Object to be renamed is found */\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {	/* At exFAT volume */\r
				BYTE nf, nn;\r
				WORD nh;\r
\r
				memcpy(buf, fs->dirbuf, SZDIRE * 2);	/* Save 85+C0 entry of old object */\r
				memcpy(&djn, &djo, sizeof djo);\r
				res = follow_path(&djn, path_new);		/* Make sure if new object name is not in use */\r
				if (res == FR_OK) {						/* Is new name already in use by any other object? */\r
					res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;\r
				}\r
				if (res == FR_NO_FILE) { 				/* It is a valid path and no name collision */\r
					res = dir_register(&djn);			/* Register the new entry */\r
					if (res == FR_OK) {\r
						nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];\r
						nh = ld_word(fs->dirbuf + XDIR_NameHash);\r
						memcpy(fs->dirbuf, buf, SZDIRE * 2);	/* Restore 85+C0 entry */\r
						fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;\r
						st_word(fs->dirbuf + XDIR_NameHash, nh);\r
						if (!(fs->dirbuf[XDIR_Attr] & AM_DIR)) fs->dirbuf[XDIR_Attr] |= AM_ARC;	/* Set archive attribute if it is a file */\r
/* Start of critical section where an interruption can cause a cross-link */\r
						res = store_xdir(&djn);\r
					}\r
				}\r
			} else\r
#endif\r
			{	/* At FAT/FAT32 volume */\r
				memcpy(buf, djo.dir, SZDIRE);			/* Save directory entry of the object */\r
				memcpy(&djn, &djo, sizeof (DIR));		/* Duplicate the directory object */\r
				res = follow_path(&djn, path_new);		/* Make sure if new object name is not in use */\r
				if (res == FR_OK) {						/* Is new name already in use by any other object? */\r
					res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;\r
				}\r
				if (res == FR_NO_FILE) { 				/* It is a valid path and no name collision */\r
					res = dir_register(&djn);			/* Register the new entry */\r
					if (res == FR_OK) {\r
						dir = djn.dir;					/* Copy directory entry of the object except name */\r
						memcpy(dir + 13, buf + 13, SZDIRE - 13);\r
						dir[DIR_Attr] = buf[DIR_Attr];\r
						if (!(dir[DIR_Attr] & AM_DIR)) dir[DIR_Attr] |= AM_ARC;	/* Set archive attribute if it is a file */\r
						fs->wflag = 1;\r
						if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) {	/* Update .. entry in the sub-directory if needed */\r
							sect = clst2sect(fs, ld_clust(fs, dir));\r
							if (sect == 0) {\r
								res = FR_INT_ERR;\r
							} else {\r
/* Start of critical section where an interruption can cause a cross-link */\r
								res = move_window(fs, sect);\r
								dir = fs->win + SZDIRE * 1;	/* Ptr to .. entry */\r
								if (res == FR_OK && dir[1] == '.') {\r
									st_clust(fs, dir, djn.obj.sclust);\r
									fs->wflag = 1;\r
								}\r
							}\r
						}\r
					}\r
				}\r
			}\r
			if (res == FR_OK) {\r
				res = dir_remove(&djo);		/* Remove old entry */\r
				if (res == FR_OK) {\r
					res = sync_fs(fs);\r
				}\r
			}\r
/* End of the critical section */\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
#endif /* FF_FS_MINIMIZE == 0 */\r
#endif /* FF_FS_MINIMIZE <= 1 */\r
#endif /* FF_FS_MINIMIZE <= 2 */\r
\r
\r
\r
#if FF_USE_CHMOD && !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Change Attribute                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_chmod (\r
	const TCHAR* path,	/* Pointer to the file path */\r
	BYTE attr,			/* Attribute bits */\r
	BYTE mask			/* Attribute mask to change */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj;\r
	DEF_NAMBUF\r
\r
\r
	res = mount_volume(&path, &fs, FA_WRITE);	/* Get logical drive */\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;	/* Check object validity */\r
		if (res == FR_OK) {\r
			mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;	/* Valid attribute mask */\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {\r
				fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask);	/* Apply attribute change */\r
				res = store_xdir(&dj);\r
			} else\r
#endif\r
			{\r
				dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask);	/* Apply attribute change */\r
				fs->wflag = 1;\r
			}\r
			if (res == FR_OK) {\r
				res = sync_fs(fs);\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Change Timestamp                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_utime (\r
	const TCHAR* path,	/* Pointer to the file/directory name */\r
	const FILINFO* fno	/* Pointer to the timestamp to be set */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj;\r
	DEF_NAMBUF\r
\r
\r
	res = mount_volume(&path, &fs, FA_WRITE);	/* Get logical drive */\r
	if (res == FR_OK) {\r
		dj.obj.fs = fs;\r
		INIT_NAMBUF(fs);\r
		res = follow_path(&dj, path);	/* Follow the file path */\r
		if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;	/* Check object validity */\r
		if (res == FR_OK) {\r
#if FF_FS_EXFAT\r
			if (fs->fs_type == FS_EXFAT) {\r
				st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);\r
				res = store_xdir(&dj);\r
			} else\r
#endif\r
			{\r
				st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);\r
				fs->wflag = 1;\r
			}\r
			if (res == FR_OK) {\r
				res = sync_fs(fs);\r
			}\r
		}\r
		FREE_NAMBUF();\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif	/* FF_USE_CHMOD && !FF_FS_READONLY */\r
\r
\r
\r
#if FF_USE_LABEL\r
/*-----------------------------------------------------------------------*/\r
/* Get Volume Label                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_getlabel (\r
	const TCHAR* path,	/* Logical drive number */\r
	TCHAR* label,		/* Buffer to store the volume label */\r
	DWORD* vsn			/* Variable to store the volume serial number */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj;\r
	UINT si, di;\r
	WCHAR wc;\r
\r
	/* Get logical drive */\r
	res = mount_volume(&path, &fs, 0);\r
\r
	/* Get volume label */\r
	if (res == FR_OK && label) {\r
		dj.obj.fs = fs; dj.obj.sclust = 0;	/* Open root directory */\r
		res = dir_sdi(&dj, 0);\r
		if (res == FR_OK) {\r
		 	res = DIR_READ_LABEL(&dj);		/* Find a volume label entry */\r
		 	if (res == FR_OK) {\r
#if FF_FS_EXFAT\r
				if (fs->fs_type == FS_EXFAT) {\r
					WCHAR hs;\r
					UINT nw;\r
\r
					for (si = di = hs = 0; si < dj.dir[XDIR_NumLabel]; si++) {	/* Extract volume label from 83 entry */\r
						wc = ld_word(dj.dir + XDIR_Label + si * 2);\r
						if (hs == 0 && IsSurrogate(wc)) {	/* Is the code a surrogate? */\r
							hs = wc; continue;\r
						}\r
						nw = put_utf((DWORD)hs << 16 | wc, &label[di], 4);	/* Store it in API encoding */\r
						if (nw == 0) {		/* Encode error? */\r
							di = 0; break;\r
						}\r
						di += nw;\r
						hs = 0;\r
					}\r
					if (hs != 0) di = 0;	/* Broken surrogate pair? */\r
					label[di] = 0;\r
				} else\r
#endif\r
				{\r
					si = di = 0;		/* Extract volume label from AM_VOL entry */\r
					while (si < 11) {\r
						wc = dj.dir[si++];\r
#if FF_USE_LFN && FF_LFN_UNICODE >= 1 	/* Unicode output */\r
						if (dbc_1st((BYTE)wc) && si < 11) wc = wc << 8 | dj.dir[si++];	/* Is it a DBC? */\r
						wc = ff_oem2uni(wc, CODEPAGE);		/* Convert it into Unicode */\r
						if (wc == 0) {		/* Invalid char in current code page? */\r
							di = 0; break;\r
						}\r
						di += put_utf(wc, &label[di], 4);	/* Store it in Unicode */\r
#else									/* ANSI/OEM output */\r
						label[di++] = (TCHAR)wc;\r
#endif\r
					}\r
					do {				/* Truncate trailing spaces */\r
						label[di] = 0;\r
						if (di == 0) break;\r
					} while (label[--di] == ' ');\r
				}\r
			}\r
		}\r
		if (res == FR_NO_FILE) {	/* No label entry and return nul string */\r
			label[0] = 0;\r
			res = FR_OK;\r
		}\r
	}\r
\r
	/* Get volume serial number */\r
	if (res == FR_OK && vsn) {\r
		res = move_window(fs, fs->volbase);\r
		if (res == FR_OK) {\r
			switch (fs->fs_type) {\r
			case FS_EXFAT:\r
				di = BPB_VolIDEx;\r
				break;\r
\r
			case FS_FAT32:\r
				di = BS_VolID32;\r
				break;\r
\r
			default:\r
				di = BS_VolID;\r
			}\r
			*vsn = ld_dword(fs->win + di);\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
\r
\r
#if !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Set Volume Label                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_setlabel (\r
	const TCHAR* label	/* Volume label to set with heading logical drive number */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DIR dj;\r
	BYTE dirvn[22];\r
	UINT di;\r
	WCHAR wc;\r
	static const char badchr[18] = "+.,;=[]" "/*:<>|\\\"\?\x7F";	/* [0..16] for FAT, [7..16] for exFAT */\r
#if FF_USE_LFN\r
	DWORD dc;\r
#endif\r
\r
	/* Get logical drive */\r
	res = mount_volume(&label, &fs, FA_WRITE);\r
	if (res != FR_OK) LEAVE_FF(fs, res);\r
\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */\r
		memset(dirvn, 0, 22);\r
		di = 0;\r
		while ((UINT)*label >= ' ') {	/* Create volume label */\r
			dc = tchar2uni(&label);	/* Get a Unicode character */\r
			if (dc >= 0x10000) {\r
				if (dc == 0xFFFFFFFF || di >= 10) {	/* Wrong surrogate or buffer overflow */\r
					dc = 0;\r
				} else {\r
					st_word(dirvn + di * 2, (WCHAR)(dc >> 16)); di++;\r
				}\r
			}\r
			if (dc == 0 || strchr(&badchr[7], (int)dc) || di >= 11) {	/* Check validity of the volume label */\r
				LEAVE_FF(fs, FR_INVALID_NAME);\r
			}\r
			st_word(dirvn + di * 2, (WCHAR)dc); di++;\r
		}\r
	} else\r
#endif\r
	{	/* On the FAT/FAT32 volume */\r
		memset(dirvn, ' ', 11);\r
		di = 0;\r
		while ((UINT)*label >= ' ') {	/* Create volume label */\r
#if FF_USE_LFN\r
			dc = tchar2uni(&label);\r
			wc = (dc < 0x10000) ? ff_uni2oem(ff_wtoupper(dc), CODEPAGE) : 0;\r
#else									/* ANSI/OEM input */\r
			wc = (BYTE)*label++;\r
			if (dbc_1st((BYTE)wc)) wc = dbc_2nd((BYTE)*label) ? wc << 8 | (BYTE)*label++ : 0;\r
			if (IsLower(wc)) wc -= 0x20;		/* To upper ASCII characters */\r
#if FF_CODE_PAGE == 0\r
			if (ExCvt && wc >= 0x80) wc = ExCvt[wc - 0x80];	/* To upper extended characters (SBCS cfg) */\r
#elif FF_CODE_PAGE < 900\r
			if (wc >= 0x80) wc = ExCvt[wc - 0x80];	/* To upper extended characters (SBCS cfg) */\r
#endif\r
#endif\r
			if (wc == 0 || strchr(&badchr[0], (int)wc) || di >= (UINT)((wc >= 0x100) ? 10 : 11)) {	/* Reject invalid characters for volume label */\r
				LEAVE_FF(fs, FR_INVALID_NAME);\r
			}\r
			if (wc >= 0x100) dirvn[di++] = (BYTE)(wc >> 8);\r
			dirvn[di++] = (BYTE)wc;\r
		}\r
		if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME);	/* Reject illegal name (heading DDEM) */\r
		while (di && dirvn[di - 1] == ' ') di--;				/* Snip trailing spaces */\r
	}\r
\r
	/* Set volume label */\r
	dj.obj.fs = fs; dj.obj.sclust = 0;	/* Open root directory */\r
	res = dir_sdi(&dj, 0);\r
	if (res == FR_OK) {\r
		res = DIR_READ_LABEL(&dj);	/* Get volume label entry */\r
		if (res == FR_OK) {\r
			if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) {\r
				dj.dir[XDIR_NumLabel] = (BYTE)di;	/* Change the volume label */\r
				memcpy(dj.dir + XDIR_Label, dirvn, 22);\r
			} else {\r
				if (di != 0) {\r
					memcpy(dj.dir, dirvn, 11);	/* Change the volume label */\r
				} else {\r
					dj.dir[DIR_Name] = DDEM;	/* Remove the volume label */\r
				}\r
			}\r
			fs->wflag = 1;\r
			res = sync_fs(fs);\r
		} else {			/* No volume label entry or an error */\r
			if (res == FR_NO_FILE) {\r
				res = FR_OK;\r
				if (di != 0) {	/* Create a volume label entry */\r
					res = dir_alloc(&dj, 1);	/* Allocate an entry */\r
					if (res == FR_OK) {\r
						memset(dj.dir, 0, SZDIRE);	/* Clean the entry */\r
						if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) {\r
							dj.dir[XDIR_Type] = ET_VLABEL;	/* Create volume label entry */\r
							dj.dir[XDIR_NumLabel] = (BYTE)di;\r
							memcpy(dj.dir + XDIR_Label, dirvn, 22);\r
						} else {\r
							dj.dir[DIR_Attr] = AM_VOL;		/* Create volume label entry */\r
							memcpy(dj.dir, dirvn, 11);\r
						}\r
						fs->wflag = 1;\r
						res = sync_fs(fs);\r
					}\r
				}\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
#endif /* FF_USE_LABEL */\r
\r
\r
\r
#if FF_USE_EXPAND && !FF_FS_READONLY\r
/*-----------------------------------------------------------------------*/\r
/* Allocate a Contiguous Blocks to the File                              */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_expand (\r
	FIL* fp,		/* Pointer to the file object */\r
	FSIZE_t fsz,	/* File size to be expanded to */\r
	BYTE opt		/* Operation mode 0:Find and prepare or 1:Find and allocate */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD n, clst, stcl, scl, ncl, tcl, lclst;\r
\r
\r
	res = validate(&fp->obj, &fs);		/* Check validity of the file object */\r
	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r
	if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);\r
#if FF_FS_EXFAT\r
	if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED);	/* Check if in size limit */\r
#endif\r
	n = (DWORD)fs->csize * SS(fs);	/* Cluster size */\r
	tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0);	/* Number of clusters required */\r
	stcl = fs->last_clst; lclst = 0;\r
	if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;\r
\r
#if FF_FS_EXFAT\r
	if (fs->fs_type == FS_EXFAT) {\r
		scl = find_bitmap(fs, stcl, tcl);			/* Find a contiguous cluster block */\r
		if (scl == 0) res = FR_DENIED;				/* No contiguous cluster block was found */\r
		if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
		if (res == FR_OK) {	/* A contiguous free area is found */\r
			if (opt) {		/* Allocate it now */\r
				res = change_bitmap(fs, scl, tcl, 1);	/* Mark the cluster block 'in use' */\r
				lclst = scl + tcl - 1;\r
			} else {		/* Set it as suggested point for next allocation */\r
				lclst = scl - 1;\r
			}\r
		}\r
	} else\r
#endif\r
	{\r
		scl = clst = stcl; ncl = 0;\r
		for (;;) {	/* Find a contiguous cluster block */\r
			n = get_fat(&fp->obj, clst);\r
			if (++clst >= fs->n_fatent) clst = 2;\r
			if (n == 1) {\r
				res = FR_INT_ERR; break;\r
			}\r
			if (n == 0xFFFFFFFF) {\r
				res = FR_DISK_ERR; break;\r
			}\r
			if (n == 0) {	/* Is it a free cluster? */\r
				if (++ncl == tcl) break;	/* Break if a contiguous cluster block is found */\r
			} else {\r
				scl = clst; ncl = 0;		/* Not a free cluster */\r
			}\r
			if (clst == stcl) {		/* No contiguous cluster? */\r
				res = FR_DENIED; break;\r
			}\r
		}\r
		if (res == FR_OK) {	/* A contiguous free area is found */\r
			if (opt) {		/* Allocate it now */\r
				for (clst = scl, n = tcl; n; clst++, n--) {	/* Create a cluster chain on the FAT */\r
					res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);\r
					if (res != FR_OK) break;\r
					lclst = clst;\r
				}\r
			} else {		/* Set it as suggested point for next allocation */\r
				lclst = scl - 1;\r
			}\r
		}\r
	}\r
\r
	if (res == FR_OK) {\r
		fs->last_clst = lclst;		/* Set suggested start cluster to start next */\r
		if (opt) {	/* Is it allocated now? */\r
			fp->obj.sclust = scl;		/* Update object allocation information */\r
			fp->obj.objsize = fsz;\r
			if (FF_FS_EXFAT) fp->obj.stat = 2;	/* Set status 'contiguous chain' */\r
			fp->flag |= FA_MODIFIED;\r
			if (fs->free_clst <= fs->n_fatent - 2) {	/* Update FSINFO */\r
				fs->free_clst -= tcl;\r
				fs->fsi_flag |= 1;\r
			}\r
		}\r
	}\r
\r
	LEAVE_FF(fs, res);\r
}\r
\r
#endif /* FF_USE_EXPAND && !FF_FS_READONLY */\r
\r
\r
\r
#if FF_USE_FORWARD\r
/*-----------------------------------------------------------------------*/\r
/* Forward Data to the Stream Directly                                   */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_forward (\r
	FIL* fp, 						/* Pointer to the file object */\r
	UINT (*func)(const BYTE*,UINT),	/* Pointer to the streaming function */\r
	UINT btf,						/* Number of bytes to forward */\r
	UINT* bf						/* Pointer to number of bytes forwarded */\r
)\r
{\r
	FRESULT res;\r
	FATFS *fs;\r
	DWORD clst;\r
	LBA_t sect;\r
	FSIZE_t remain;\r
	UINT rcnt, csect;\r
	BYTE *dbuf;\r
\r
\r
	*bf = 0;	/* Clear transfer byte counter */\r
	res = validate(&fp->obj, &fs);		/* Check validity of the file object */\r
	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);\r
	if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED);	/* Check access mode */\r
\r
	remain = fp->obj.objsize - fp->fptr;\r
	if (btf > remain) btf = (UINT)remain;			/* Truncate btf by remaining bytes */\r
\r
	for ( ; btf > 0 && (*func)(0, 0); fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {	/* Repeat until all data transferred or stream goes busy */\r
		csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1));	/* Sector offset in the cluster */\r
		if (fp->fptr % SS(fs) == 0) {				/* On the sector boundary? */\r
			if (csect == 0) {						/* On the cluster boundary? */\r
				clst = (fp->fptr == 0) ?			/* On the top of the file? */\r
					fp->obj.sclust : get_fat(&fp->obj, fp->clust);\r
				if (clst <= 1) ABORT(fs, FR_INT_ERR);\r
				if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
				fp->clust = clst;					/* Update current cluster */\r
			}\r
		}\r
		sect = clst2sect(fs, fp->clust);			/* Get current data sector */\r
		if (sect == 0) ABORT(fs, FR_INT_ERR);\r
		sect += csect;\r
#if FF_FS_TINY\r
		if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR);	/* Move sector window to the file data */\r
		dbuf = fs->win;\r
#else\r
		if (fp->sect != sect) {		/* Fill sector cache with file data */\r
#if !FF_FS_READONLY\r
			if (fp->flag & FA_DIRTY) {		/* Write-back dirty sector cache */\r
				if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
				fp->flag &= (BYTE)~FA_DIRTY;\r
			}\r
#endif\r
			if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);\r
		}\r
		dbuf = fp->buf;\r
#endif\r
		fp->sect = sect;\r
		rcnt = SS(fs) - (UINT)fp->fptr % SS(fs);	/* Number of bytes remains in the sector */\r
		if (rcnt > btf) rcnt = btf;					/* Clip it by btr if needed */\r
		rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt);	/* Forward the file data */\r
		if (rcnt == 0) ABORT(fs, FR_INT_ERR);\r
	}\r
\r
	LEAVE_FF(fs, FR_OK);\r
}\r
#endif /* FF_USE_FORWARD */\r
\r
\r
\r
#if !FF_FS_READONLY && FF_USE_MKFS\r
/*-----------------------------------------------------------------------*/\r
/* Create FAT/exFAT volume (with sub-functions)                          */\r
/*-----------------------------------------------------------------------*/\r
\r
#define N_SEC_TRACK 63			/* Sectors per track for determination of drive CHS */\r
#define	GPT_ALIGN	0x100000	/* Alignment of partitions in GPT [byte] (>=128KB) */\r
#define GPT_ITEMS	128			/* Number of GPT table size (>=128, sector aligned) */\r
\r
\r
/* Create partitions on the physical drive in format of MBR or GPT */\r
\r
static FRESULT create_partition (\r
	BYTE drv,			/* Physical drive number */\r
	const LBA_t plst[],	/* Partition list */\r
	BYTE sys,			/* System ID for each partition (for only MBR) */\r
	BYTE *buf			/* Working buffer for a sector */\r
)\r
{\r
	UINT i, cy;\r
	LBA_t sz_drv;\r
	DWORD sz_drv32, nxt_alloc32, sz_part32;\r
	BYTE *pte;\r
	BYTE hd, n_hd, sc, n_sc;\r
\r
	/* Get physical drive size */\r
	if (disk_ioctl(drv, GET_SECTOR_COUNT, &sz_drv) != RES_OK) return FR_DISK_ERR;\r
\r
#if FF_LBA64\r
	if (sz_drv >= FF_MIN_GPT) {	/* Create partitions in GPT format */\r
		WORD ss;\r
		UINT sz_ptbl, pi, si, ofs;\r
		DWORD bcc, rnd, align;\r
		QWORD nxt_alloc, sz_part, sz_pool, top_bpt;\r
		static const BYTE gpt_mbr[16] = {0x00, 0x00, 0x02, 0x00, 0xEE, 0xFE, 0xFF, 0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF};\r
\r
#if FF_MAX_SS != FF_MIN_SS\r
		if (disk_ioctl(drv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;	/* Get sector size */\r
		if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;\r
#else\r
		ss = FF_MAX_SS;\r
#endif\r
		rnd = (DWORD)sz_drv + GET_FATTIME();	/* Random seed */\r
		align = GPT_ALIGN / ss;				/* Partition alignment for GPT [sector] */\r
		sz_ptbl = GPT_ITEMS * SZ_GPTE / ss;	/* Size of partition table [sector] */\r
		top_bpt = sz_drv - sz_ptbl - 1;		/* Backup partition table start sector */\r
		nxt_alloc = 2 + sz_ptbl;			/* First allocatable sector */\r
		sz_pool = top_bpt - nxt_alloc;		/* Size of allocatable area */\r
		bcc = 0xFFFFFFFF; sz_part = 1;\r
		pi = si = 0;	/* partition table index, size table index */\r
		do {\r
			if (pi * SZ_GPTE % ss == 0) memset(buf, 0, ss);	/* Clean the buffer if needed */\r
			if (sz_part != 0) {				/* Is the size table not termintated? */\r
				nxt_alloc = (nxt_alloc + align - 1) & ((QWORD)0 - align);	/* Align partition start */\r
				sz_part = plst[si++];		/* Get a partition size */\r
				if (sz_part <= 100) {		/* Is the size in percentage? */\r
					sz_part = sz_pool * sz_part / 100;\r
					sz_part = (sz_part + align - 1) & ((QWORD)0 - align);	/* Align partition end (only if in percentage) */\r
				}\r
				if (nxt_alloc + sz_part > top_bpt) {	/* Clip the size at end of the pool */\r
					sz_part = (nxt_alloc < top_bpt) ? top_bpt - nxt_alloc : 0;\r
				}\r
			}\r
			if (sz_part != 0) {				/* Add a partition? */\r
				ofs = pi * SZ_GPTE % ss;\r
				memcpy(buf + ofs + GPTE_PtGuid, GUID_MS_Basic, 16);	/* Set partition GUID (Microsoft Basic Data) */\r
				rnd = make_rand(rnd, buf + ofs + GPTE_UpGuid, 16);	/* Set unique partition GUID */\r
				st_qword(buf + ofs + GPTE_FstLba, nxt_alloc);		/* Set partition start sector */\r
				st_qword(buf + ofs + GPTE_LstLba, nxt_alloc + sz_part - 1);	/* Set partition end sector */\r
				nxt_alloc += sz_part;								/* Next allocatable sector */\r
			}\r
			if ((pi + 1) * SZ_GPTE % ss == 0) {		/* Write the buffer if it is filled up */\r
				for (i = 0; i < ss; bcc = crc32(bcc, buf[i++])) ;	/* Calculate table check sum */\r
				if (disk_write(drv, buf, 2 + pi * SZ_GPTE / ss, 1) != RES_OK) return FR_DISK_ERR;		/* Write to primary table */\r
				if (disk_write(drv, buf, top_bpt + pi * SZ_GPTE / ss, 1) != RES_OK) return FR_DISK_ERR;	/* Write to secondary table */\r
			}\r
		} while (++pi < GPT_ITEMS);\r
\r
		/* Create primary GPT header */\r
		memset(buf, 0, ss);\r
		memcpy(buf + GPTH_Sign, "EFI PART" "\0\0\1\0" "\x5C\0\0", 16);	/* Signature, version (1.0) and size (92) */\r
		st_dword(buf + GPTH_PtBcc, ~bcc);			/* Table check sum */\r
		st_qword(buf + GPTH_CurLba, 1);				/* LBA of this header */\r
		st_qword(buf + GPTH_BakLba, sz_drv - 1);	/* LBA of secondary header */\r
		st_qword(buf + GPTH_FstLba, 2 + sz_ptbl);	/* LBA of first allocatable sector */\r
		st_qword(buf + GPTH_LstLba, top_bpt - 1);	/* LBA of last allocatable sector */\r
		st_dword(buf + GPTH_PteSize, SZ_GPTE);		/* Size of a table entry */\r
		st_dword(buf + GPTH_PtNum, GPT_ITEMS);		/* Number of table entries */\r
		st_dword(buf + GPTH_PtOfs, 2);				/* LBA of this table */\r
		rnd = make_rand(rnd, buf + GPTH_DskGuid, 16);	/* Disk GUID */\r
		for (i = 0, bcc= 0xFFFFFFFF; i < 92; bcc = crc32(bcc, buf[i++])) ;	/* Calculate header check sum */\r
		st_dword(buf + GPTH_Bcc, ~bcc);				/* Header check sum */\r
		if (disk_write(drv, buf, 1, 1) != RES_OK) return FR_DISK_ERR;\r
\r
		/* Create secondary GPT header */\r
		st_qword(buf + GPTH_CurLba, sz_drv - 1);	/* LBA of this header */\r
		st_qword(buf + GPTH_BakLba, 1);				/* LBA of primary header */\r
		st_qword(buf + GPTH_PtOfs, top_bpt);		/* LBA of this table */\r
		st_dword(buf + GPTH_Bcc, 0);\r
		for (i = 0, bcc= 0xFFFFFFFF; i < 92; bcc = crc32(bcc, buf[i++])) ;	/* Calculate header check sum */\r
		st_dword(buf + GPTH_Bcc, ~bcc);				/* Header check sum */\r
		if (disk_write(drv, buf, sz_drv - 1, 1) != RES_OK) return FR_DISK_ERR;\r
\r
		/* Create protective MBR */\r
		memset(buf, 0, ss);\r
		memcpy(buf + MBR_Table, gpt_mbr, 16);		/* Create a GPT partition */\r
		st_word(buf + BS_55AA, 0xAA55);\r
		if (disk_write(drv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;\r
\r
	} else\r
#endif\r
	{	/* Create partitions in MBR format */\r
		sz_drv32 = (DWORD)sz_drv;\r
		n_sc = N_SEC_TRACK;				/* Determine drive CHS without any consideration of the drive geometry */\r
		for (n_hd = 8; n_hd != 0 && sz_drv32 / n_hd / n_sc > 1024; n_hd *= 2) ;\r
		if (n_hd == 0) n_hd = 255;		/* Number of heads needs to be <256 */\r
\r
		memset(buf, 0, FF_MAX_SS);		/* Clear MBR */\r
		pte = buf + MBR_Table;	/* Partition table in the MBR */\r
		for (i = 0, nxt_alloc32 = n_sc; i < 4 && nxt_alloc32 != 0 && nxt_alloc32 < sz_drv32; i++, nxt_alloc32 += sz_part32) {\r
			sz_part32 = (DWORD)plst[i];	/* Get partition size */\r
			if (sz_part32 <= 100) sz_part32 = (sz_part32 == 100) ? sz_drv32 : sz_drv32 / 100 * sz_part32;	/* Size in percentage? */\r
			if (nxt_alloc32 + sz_part32 > sz_drv32 || nxt_alloc32 + sz_part32 < nxt_alloc32) sz_part32 = sz_drv32 - nxt_alloc32;	/* Clip at drive size */\r
			if (sz_part32 == 0) break;	/* End of table or no sector to allocate? */\r
\r
			st_dword(pte + PTE_StLba, nxt_alloc32);	/* Start LBA */\r
			st_dword(pte + PTE_SizLba, sz_part32);	/* Number of sectors */\r
			pte[PTE_System] = sys;					/* System type */\r
\r
			cy = (UINT)(nxt_alloc32 / n_sc / n_hd);	/* Start cylinder */\r
			hd = (BYTE)(nxt_alloc32 / n_sc % n_hd);	/* Start head */\r
			sc = (BYTE)(nxt_alloc32 % n_sc + 1);	/* Start sector */\r
			pte[PTE_StHead] = hd;\r
			pte[PTE_StSec] = (BYTE)((cy >> 2 & 0xC0) | sc);\r
			pte[PTE_StCyl] = (BYTE)cy;\r
\r
			cy = (UINT)((nxt_alloc32 + sz_part32 - 1) / n_sc / n_hd);	/* End cylinder */\r
			hd = (BYTE)((nxt_alloc32 + sz_part32 - 1) / n_sc % n_hd);	/* End head */\r
			sc = (BYTE)((nxt_alloc32 + sz_part32 - 1) % n_sc + 1);		/* End sector */\r
			pte[PTE_EdHead] = hd;\r
			pte[PTE_EdSec] = (BYTE)((cy >> 2 & 0xC0) | sc);\r
			pte[PTE_EdCyl] = (BYTE)cy;\r
\r
			pte += SZ_PTE;		/* Next entry */\r
		}\r
\r
		st_word(buf + BS_55AA, 0xAA55);		/* MBR signature */\r
		if (disk_write(drv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;	/* Write it to the MBR */\r
	}\r
\r
	return FR_OK;\r
}\r
\r
\r
\r
FRESULT f_mkfs (\r
	const TCHAR* path,		/* Logical drive number */\r
	const MKFS_PARM* opt,	/* Format options */\r
	void* work,				/* Pointer to working buffer (null: use len bytes of heap memory) */\r
	UINT len				/* Size of working buffer [byte] */\r
)\r
{\r
	static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0};	/* Cluster size boundary for FAT volume (4Ks unit) */\r
	static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0};	/* Cluster size boundary for FAT32 volume (128Ks unit) */\r
	static const MKFS_PARM defopt = {FM_ANY, 0, 0, 0, 0};	/* Default parameter */\r
	BYTE fsopt, fsty, sys, pdrv, ipart;\r
	BYTE *buf;\r
	BYTE *pte;\r
	WORD ss;	/* Sector size */\r
	DWORD sz_buf, sz_blk, n_clst, pau, nsect, n, vsn;\r
	LBA_t sz_vol, b_vol, b_fat, b_data;		/* Size of volume, Base LBA of volume, fat, data */\r
	LBA_t sect, lba[2];\r
	DWORD sz_rsv, sz_fat, sz_dir, sz_au;	/* Size of reserved, fat, dir, data, cluster */\r
	UINT n_fat, n_root, i;					/* Index, Number of FATs and Number of roor dir entries */\r
	int vol;\r
	DSTATUS ds;\r
	FRESULT res;\r
\r
\r
	/* Check mounted drive and clear work area */\r
	vol = get_ldnumber(&path);					/* Get target logical drive */\r
	if (vol < 0) return FR_INVALID_DRIVE;\r
	if (FatFs[vol]) FatFs[vol]->fs_type = 0;	/* Clear the fs object if mounted */\r
	pdrv = LD2PD(vol);		/* Hosting physical drive */\r
	ipart = LD2PT(vol);		/* Hosting partition (0:create as new, 1..:existing partition) */\r
\r
	/* Initialize the hosting physical drive */\r
	ds = disk_initialize(pdrv);\r
	if (ds & STA_NOINIT) return FR_NOT_READY;\r
	if (ds & STA_PROTECT) return FR_WRITE_PROTECTED;\r
\r
	/* Get physical drive parameters (sz_drv, sz_blk and ss) */\r
	if (!opt) opt = &defopt;	/* Use default parameter if it is not given */\r
	sz_blk = opt->align;\r
	if (sz_blk == 0) disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk);					/* Block size from the paramter or lower layer */\r
 	if (sz_blk == 0 || sz_blk > 0x8000 || (sz_blk & (sz_blk - 1))) sz_blk = 1;	/* Use default if the block size is invalid */\r
#if FF_MAX_SS != FF_MIN_SS\r
	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;\r
	if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;\r
#else\r
	ss = FF_MAX_SS;\r
#endif\r
\r
	/* Options for FAT sub-type and FAT parameters */\r
	fsopt = opt->fmt & (FM_ANY | FM_SFD);\r
	n_fat = (opt->n_fat >= 1 && opt->n_fat <= 2) ? opt->n_fat : 1;\r
	n_root = (opt->n_root >= 1 && opt->n_root <= 32768 && (opt->n_root % (ss / SZDIRE)) == 0) ? opt->n_root : 512;\r
	sz_au = (opt->au_size <= 0x1000000 && (opt->au_size & (opt->au_size - 1)) == 0) ? opt->au_size : 0;\r
	sz_au /= ss;	/* Byte --> Sector */\r
\r
	/* Get working buffer */\r
	sz_buf = len / ss;		/* Size of working buffer [sector] */\r
	if (sz_buf == 0) return FR_NOT_ENOUGH_CORE;\r
	buf = (BYTE*)work;		/* Working buffer */\r
#if FF_USE_LFN == 3\r
	if (!buf) buf = ff_memalloc(sz_buf * ss);	/* Use heap memory for working buffer */\r
#endif\r
	if (!buf) return FR_NOT_ENOUGH_CORE;\r
\r
	/* Determine where the volume to be located (b_vol, sz_vol) */\r
	b_vol = sz_vol = 0;\r
	if (FF_MULTI_PARTITION && ipart != 0) {	/* Is the volume associated with any specific partition? */\r
		/* Get partition location from the existing partition table */\r
		if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Load MBR */\r
		if (ld_word(buf + BS_55AA) != 0xAA55) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Check if MBR is valid */\r
#if FF_LBA64\r
		if (buf[MBR_Table + PTE_System] == 0xEE) {	/* GPT protective MBR? */\r
			DWORD n_ent, ofs;\r
			QWORD pt_lba;\r
\r
			/* Get the partition location from GPT */\r
			if (disk_read(pdrv, buf, 1, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Load GPT header sector (next to MBR) */\r
			if (!test_gpt_header(buf)) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Check if GPT header is valid */\r
			n_ent = ld_dword(buf + GPTH_PtNum);		/* Number of entries */\r
			pt_lba = ld_qword(buf + GPTH_PtOfs);	/* Table start sector */\r
			ofs = i = 0;\r
			while (n_ent) {		/* Find MS Basic partition with order of ipart */\r
				if (ofs == 0 && disk_read(pdrv, buf, pt_lba++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Get PT sector */\r
				if (!memcmp(buf + ofs + GPTE_PtGuid, GUID_MS_Basic, 16) && ++i == ipart) {	/* MS basic data partition? */\r
					b_vol = ld_qword(buf + ofs + GPTE_FstLba);\r
					sz_vol = ld_qword(buf + ofs + GPTE_LstLba) - b_vol + 1;\r
					break;\r
				}\r
				n_ent--; ofs = (ofs + SZ_GPTE) % ss;	/* Next entry */\r
			}\r
			if (n_ent == 0) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Partition not found */\r
			fsopt |= 0x80;	/* Partitioning is in GPT */\r
		} else\r
#endif\r
		{	/* Get the partition location from MBR partition table */\r
			pte = buf + (MBR_Table + (ipart - 1) * SZ_PTE);\r
			if (ipart > 4 || pte[PTE_System] == 0) LEAVE_MKFS(FR_MKFS_ABORTED);	/* No partition? */\r
			b_vol = ld_dword(pte + PTE_StLba);		/* Get volume start sector */\r
			sz_vol = ld_dword(pte + PTE_SizLba);	/* Get volume size */\r
		}\r
	} else {	/* The volume is associated with a physical drive */\r
		if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
		if (!(fsopt & FM_SFD)) {	/* To be partitioned? */\r
			/* Create a single-partition on the drive in this function */\r
#if FF_LBA64\r
			if (sz_vol >= FF_MIN_GPT) {	/* Which partition type to create, MBR or GPT? */\r
				fsopt |= 0x80;		/* Partitioning is in GPT */\r
				b_vol = GPT_ALIGN / ss; sz_vol -= b_vol + GPT_ITEMS * SZ_GPTE / ss + 1;	/* Estimated partition offset and size */\r
			} else\r
#endif\r
			{	/* Partitioning is in MBR */\r
				if (sz_vol > N_SEC_TRACK) {\r
					b_vol = N_SEC_TRACK; sz_vol -= b_vol;	/* Estimated partition offset and size */\r
				}\r
			}\r
		}\r
	}\r
	if (sz_vol < 128) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Check if volume size is >=128s */\r
\r
	/* Now start to create an FAT volume at b_vol and sz_vol */\r
\r
	do {	/* Pre-determine the FAT type */\r
		if (FF_FS_EXFAT && (fsopt & FM_EXFAT)) {	/* exFAT possible? */\r
			if ((fsopt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || sz_au > 128) {	/* exFAT only, vol >= 64MS or sz_au > 128S ? */\r
				fsty = FS_EXFAT; break;\r
			}\r
		}\r
#if FF_LBA64\r
		if (sz_vol >= 0x100000000) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too large volume for FAT/FAT32 */\r
#endif\r
		if (sz_au > 128) sz_au = 128;	/* Invalid AU for FAT/FAT32? */\r
		if (fsopt & FM_FAT32) {	/* FAT32 possible? */\r
			if (!(fsopt & FM_FAT)) {	/* no-FAT? */\r
				fsty = FS_FAT32; break;\r
			}\r
		}\r
		if (!(fsopt & FM_FAT)) LEAVE_MKFS(FR_INVALID_PARAMETER);	/* no-FAT? */\r
		fsty = FS_FAT16;\r
	} while (0);\r
\r
	vsn = (DWORD)sz_vol + GET_FATTIME();	/* VSN generated from current time and partitiion size */\r
\r
#if FF_FS_EXFAT\r
	if (fsty == FS_EXFAT) {	/* Create an exFAT volume */\r
		DWORD szb_bit, szb_case, sum, nbit, clu, clen[3];\r
		WCHAR ch, si;\r
		UINT j, st;\r
\r
		if (sz_vol < 0x1000) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too small volume for exFAT? */\r
#if FF_USE_TRIM\r
		lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1;	/* Inform storage device that the volume area may be erased */\r
		disk_ioctl(pdrv, CTRL_TRIM, lba);\r
#endif\r
		/* Determine FAT location, data location and number of clusters */\r
		if (sz_au == 0) {	/* AU auto-selection */\r
			sz_au = 8;\r
			if (sz_vol >= 0x80000) sz_au = 64;		/* >= 512Ks */\r
			if (sz_vol >= 0x4000000) sz_au = 256;	/* >= 64Ms */\r
		}\r
		b_fat = b_vol + 32;										/* FAT start at offset 32 */\r
		sz_fat = (DWORD)((sz_vol / sz_au + 2) * 4 + ss - 1) / ss;	/* Number of FAT sectors */\r
		b_data = (b_fat + sz_fat + sz_blk - 1) & ~((LBA_t)sz_blk - 1);	/* Align data area to the erase block boundary */\r
		if (b_data - b_vol >= sz_vol / 2) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too small volume? */\r
		n_clst = (DWORD)((sz_vol - (b_data - b_vol)) / sz_au);	/* Number of clusters */\r
		if (n_clst <16) LEAVE_MKFS(FR_MKFS_ABORTED);			/* Too few clusters? */\r
		if (n_clst > MAX_EXFAT) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too many clusters? */\r
\r
		szb_bit = (n_clst + 7) / 8;								/* Size of allocation bitmap */\r
		clen[0] = (szb_bit + sz_au * ss - 1) / (sz_au * ss);	/* Number of allocation bitmap clusters */\r
\r
		/* Create a compressed up-case table */\r
		sect = b_data + sz_au * clen[0];	/* Table start sector */\r
		sum = 0;							/* Table checksum to be stored in the 82 entry */\r
		st = 0; si = 0; i = 0; j = 0; szb_case = 0;\r
		do {\r
			switch (st) {\r
			case 0:\r
				ch = (WCHAR)ff_wtoupper(si);	/* Get an up-case char */\r
				if (ch != si) {\r
					si++; break;		/* Store the up-case char if exist */\r
				}\r
				for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ;	/* Get run length of no-case block */\r
				if (j >= 128) {\r
					ch = 0xFFFF; st = 2; break;	/* Compress the no-case block if run is >= 128 chars */\r
				}\r
				st = 1;			/* Do not compress short run */\r
				/* FALLTHROUGH */\r
			case 1:\r
				ch = si++;		/* Fill the short run */\r
				if (--j == 0) st = 0;\r
				break;\r
\r
			default:\r
				ch = (WCHAR)j; si += (WCHAR)j;	/* Number of chars to skip */\r
				st = 0;\r
			}\r
			sum = xsum32(buf[i + 0] = (BYTE)ch, sum);	/* Put it into the write buffer */\r
			sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);\r
			i += 2; szb_case += 2;\r
			if (si == 0 || i == sz_buf * ss) {		/* Write buffered data when buffer full or end of process */\r
				n = (i + ss - 1) / ss;\r
				if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
				sect += n; i = 0;\r
			}\r
		} while (si);\r
		clen[1] = (szb_case + sz_au * ss - 1) / (sz_au * ss);	/* Number of up-case table clusters */\r
		clen[2] = 1;	/* Number of root dir clusters */\r
\r
		/* Initialize the allocation bitmap */\r
		sect = b_data; nsect = (szb_bit + ss - 1) / ss;	/* Start of bitmap and number of bitmap sectors */\r
		nbit = clen[0] + clen[1] + clen[2];				/* Number of clusters in-use by system (bitmap, up-case and root-dir) */\r
		do {\r
			memset(buf, 0, sz_buf * ss);				/* Initialize bitmap buffer */\r
			for (i = 0; nbit != 0 && i / 8 < sz_buf * ss; buf[i / 8] |= 1 << (i % 8), i++, nbit--) ;	/* Mark used clusters */\r
			n = (nsect > sz_buf) ? sz_buf : nsect;		/* Write the buffered data */\r
			if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			sect += n; nsect -= n;\r
		} while (nsect);\r
\r
		/* Initialize the FAT */\r
		sect = b_fat; nsect = sz_fat;	/* Start of FAT and number of FAT sectors */\r
		j = nbit = clu = 0;\r
		do {\r
			memset(buf, 0, sz_buf * ss); i = 0;	/* Clear work area and reset write offset */\r
			if (clu == 0) {	/* Initialize FAT [0] and FAT[1] */\r
				st_dword(buf + i, 0xFFFFFFF8); i += 4; clu++;\r
				st_dword(buf + i, 0xFFFFFFFF); i += 4; clu++;\r
			}\r
			do {			/* Create chains of bitmap, up-case and root dir */\r
				while (nbit != 0 && i < sz_buf * ss) {	/* Create a chain */\r
					st_dword(buf + i, (nbit > 1) ? clu + 1 : 0xFFFFFFFF);\r
					i += 4; clu++; nbit--;\r
				}\r
				if (nbit == 0 && j < 3) nbit = clen[j++];	/* Get next chain length */\r
			} while (nbit != 0 && i < sz_buf * ss);\r
			n = (nsect > sz_buf) ? sz_buf : nsect;	/* Write the buffered data */\r
			if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			sect += n; nsect -= n;\r
		} while (nsect);\r
\r
		/* Initialize the root directory */\r
		memset(buf, 0, sz_buf * ss);\r
		buf[SZDIRE * 0 + 0] = ET_VLABEL;				/* Volume label entry (no label) */\r
		buf[SZDIRE * 1 + 0] = ET_BITMAP;				/* Bitmap entry */\r
		st_dword(buf + SZDIRE * 1 + 20, 2);				/*  cluster */\r
		st_dword(buf + SZDIRE * 1 + 24, szb_bit);		/*  size */\r
		buf[SZDIRE * 2 + 0] = ET_UPCASE;				/* Up-case table entry */\r
		st_dword(buf + SZDIRE * 2 + 4, sum);			/*  sum */\r
		st_dword(buf + SZDIRE * 2 + 20, 2 + clen[0]);	/*  cluster */\r
		st_dword(buf + SZDIRE * 2 + 24, szb_case);		/*  size */\r
		sect = b_data + sz_au * (clen[0] + clen[1]); nsect = sz_au;	/* Start of the root directory and number of sectors */\r
		do {	/* Fill root directory sectors */\r
			n = (nsect > sz_buf) ? sz_buf : nsect;\r
			if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			memset(buf, 0, ss);	/* Rest of entries are filled with zero */\r
			sect += n; nsect -= n;\r
		} while (nsect);\r
\r
		/* Create two set of the exFAT VBR blocks */\r
		sect = b_vol;\r
		for (n = 0; n < 2; n++) {\r
			/* Main record (+0) */\r
			memset(buf, 0, ss);\r
			memcpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11);	/* Boot jump code (x86), OEM name */\r
			st_qword(buf + BPB_VolOfsEx, b_vol);					/* Volume offset in the physical drive [sector] */\r
			st_qword(buf + BPB_TotSecEx, sz_vol);					/* Volume size [sector] */\r
			st_dword(buf + BPB_FatOfsEx, (DWORD)(b_fat - b_vol));	/* FAT offset [sector] */\r
			st_dword(buf + BPB_FatSzEx, sz_fat);					/* FAT size [sector] */\r
			st_dword(buf + BPB_DataOfsEx, (DWORD)(b_data - b_vol));	/* Data offset [sector] */\r
			st_dword(buf + BPB_NumClusEx, n_clst);					/* Number of clusters */\r
			st_dword(buf + BPB_RootClusEx, 2 + clen[0] + clen[1]);	/* Root dir cluster # */\r
			st_dword(buf + BPB_VolIDEx, vsn);						/* VSN */\r
			st_word(buf + BPB_FSVerEx, 0x100);						/* Filesystem version (1.00) */\r
			for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ;	/* Log2 of sector size [byte] */\r
			for (buf[BPB_SecPerClusEx] = 0, i = sz_au; i >>= 1; buf[BPB_SecPerClusEx]++) ;	/* Log2 of cluster size [sector] */\r
			buf[BPB_NumFATsEx] = 1;					/* Number of FATs */\r
			buf[BPB_DrvNumEx] = 0x80;				/* Drive number (for int13) */\r
			st_word(buf + BS_BootCodeEx, 0xFEEB);	/* Boot code (x86) */\r
			st_word(buf + BS_55AA, 0xAA55);			/* Signature (placed here regardless of sector size) */\r
			for (i = sum = 0; i < ss; i++) {		/* VBR checksum */\r
				if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);\r
			}\r
			if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			/* Extended bootstrap record (+1..+8) */\r
			memset(buf, 0, ss);\r
			st_word(buf + ss - 2, 0xAA55);	/* Signature (placed at end of sector) */\r
			for (j = 1; j < 9; j++) {\r
				for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ;	/* VBR checksum */\r
				if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			}\r
			/* OEM/Reserved record (+9..+10) */\r
			memset(buf, 0, ss);\r
			for ( ; j < 11; j++) {\r
				for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ;	/* VBR checksum */\r
				if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			}\r
			/* Sum record (+11) */\r
			for (i = 0; i < ss; i += 4) st_dword(buf + i, sum);		/* Fill with checksum value */\r
			if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
		}\r
\r
	} else\r
#endif	/* FF_FS_EXFAT */\r
	{	/* Create an FAT/FAT32 volume */\r
		do {\r
			pau = sz_au;\r
			/* Pre-determine number of clusters and FAT sub-type */\r
			if (fsty == FS_FAT32) {	/* FAT32 volume */\r
				if (pau == 0) {	/* AU auto-selection */\r
					n = (DWORD)sz_vol / 0x20000;	/* Volume size in unit of 128KS */\r
					for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ;	/* Get from table */\r
				}\r
				n_clst = (DWORD)sz_vol / pau;	/* Number of clusters */\r
				sz_fat = (n_clst * 4 + 8 + ss - 1) / ss;	/* FAT size [sector] */\r
				sz_rsv = 32;	/* Number of reserved sectors */\r
				sz_dir = 0;		/* No static directory */\r
				if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) LEAVE_MKFS(FR_MKFS_ABORTED);\r
			} else {				/* FAT volume */\r
				if (pau == 0) {	/* au auto-selection */\r
					n = (DWORD)sz_vol / 0x1000;	/* Volume size in unit of 4KS */\r
					for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ;	/* Get from table */\r
				}\r
				n_clst = (DWORD)sz_vol / pau;\r
				if (n_clst > MAX_FAT12) {\r
					n = n_clst * 2 + 4;		/* FAT size [byte] */\r
				} else {\r
					fsty = FS_FAT12;\r
					n = (n_clst * 3 + 1) / 2 + 3;	/* FAT size [byte] */\r
				}\r
				sz_fat = (n + ss - 1) / ss;		/* FAT size [sector] */\r
				sz_rsv = 1;						/* Number of reserved sectors */\r
				sz_dir = (DWORD)n_root * SZDIRE / ss;	/* Root dir size [sector] */\r
			}\r
			b_fat = b_vol + sz_rsv;						/* FAT base */\r
			b_data = b_fat + sz_fat * n_fat + sz_dir;	/* Data base */\r
\r
			/* Align data area to erase block boundary (for flash memory media) */\r
			n = (DWORD)(((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data);	/* Sectors to next nearest from current data base */\r
			if (fsty == FS_FAT32) {		/* FAT32: Move FAT */\r
				sz_rsv += n; b_fat += n;\r
			} else {					/* FAT: Expand FAT */\r
				if (n % n_fat) {	/* Adjust fractional error if needed */\r
					n--; sz_rsv++; b_fat++;\r
				}\r
				sz_fat += n / n_fat;\r
			}\r
\r
			/* Determine number of clusters and final check of validity of the FAT sub-type */\r
			if (sz_vol < b_data + pau * 16 - b_vol) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too small volume? */\r
			n_clst = ((DWORD)sz_vol - sz_rsv - sz_fat * n_fat - sz_dir) / pau;\r
			if (fsty == FS_FAT32) {\r
				if (n_clst <= MAX_FAT16) {	/* Too few clusters for FAT32? */\r
					if (sz_au == 0 && (sz_au = pau / 2) != 0) continue;	/* Adjust cluster size and retry */\r
					LEAVE_MKFS(FR_MKFS_ABORTED);\r
				}\r
			}\r
			if (fsty == FS_FAT16) {\r
				if (n_clst > MAX_FAT16) {	/* Too many clusters for FAT16 */\r
					if (sz_au == 0 && (pau * 2) <= 64) {\r
						sz_au = pau * 2; continue;	/* Adjust cluster size and retry */\r
					}\r
					if ((fsopt & FM_FAT32)) {\r
						fsty = FS_FAT32; continue;	/* Switch type to FAT32 and retry */\r
					}\r
					if (sz_au == 0 && (sz_au = pau * 2) <= 128) continue;	/* Adjust cluster size and retry */\r
					LEAVE_MKFS(FR_MKFS_ABORTED);\r
				}\r
				if  (n_clst <= MAX_FAT12) {	/* Too few clusters for FAT16 */\r
					if (sz_au == 0 && (sz_au = pau * 2) <= 128) continue;	/* Adjust cluster size and retry */\r
					LEAVE_MKFS(FR_MKFS_ABORTED);\r
				}\r
			}\r
			if (fsty == FS_FAT12 && n_clst > MAX_FAT12) LEAVE_MKFS(FR_MKFS_ABORTED);	/* Too many clusters for FAT12 */\r
\r
			/* Ok, it is the valid cluster configuration */\r
			break;\r
		} while (1);\r
\r
#if FF_USE_TRIM\r
		lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1;	/* Inform storage device that the volume area may be erased */\r
		disk_ioctl(pdrv, CTRL_TRIM, lba);\r
#endif\r
		/* Create FAT VBR */\r
		memset(buf, 0, ss);\r
		memcpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);	/* Boot jump code (x86), OEM name */\r
		st_word(buf + BPB_BytsPerSec, ss);				/* Sector size [byte] */\r
		buf[BPB_SecPerClus] = (BYTE)pau;				/* Cluster size [sector] */\r
		st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv);	/* Size of reserved area */\r
		buf[BPB_NumFATs] = (BYTE)n_fat;					/* Number of FATs */\r
		st_word(buf + BPB_RootEntCnt, (WORD)((fsty == FS_FAT32) ? 0 : n_root));	/* Number of root directory entries */\r
		if (sz_vol < 0x10000) {\r
			st_word(buf + BPB_TotSec16, (WORD)sz_vol);	/* Volume size in 16-bit LBA */\r
		} else {\r
			st_dword(buf + BPB_TotSec32, (DWORD)sz_vol);	/* Volume size in 32-bit LBA */\r
		}\r
		buf[BPB_Media] = 0xF8;							/* Media descriptor byte */\r
		st_word(buf + BPB_SecPerTrk, 63);				/* Number of sectors per track (for int13) */\r
		st_word(buf + BPB_NumHeads, 255);				/* Number of heads (for int13) */\r
		st_dword(buf + BPB_HiddSec, (DWORD)b_vol);		/* Volume offset in the physical drive [sector] */\r
		if (fsty == FS_FAT32) {\r
			st_dword(buf + BS_VolID32, vsn);			/* VSN */\r
			st_dword(buf + BPB_FATSz32, sz_fat);		/* FAT size [sector] */\r
			st_dword(buf + BPB_RootClus32, 2);			/* Root directory cluster # (2) */\r
			st_word(buf + BPB_FSInfo32, 1);				/* Offset of FSINFO sector (VBR + 1) */\r
			st_word(buf + BPB_BkBootSec32, 6);			/* Offset of backup VBR (VBR + 6) */\r
			buf[BS_DrvNum32] = 0x80;					/* Drive number (for int13) */\r
			buf[BS_BootSig32] = 0x29;					/* Extended boot signature */\r
			memcpy(buf + BS_VolLab32, "NO NAME    " "FAT32   ", 19);	/* Volume label, FAT signature */\r
		} else {\r
			st_dword(buf + BS_VolID, vsn);				/* VSN */\r
			st_word(buf + BPB_FATSz16, (WORD)sz_fat);	/* FAT size [sector] */\r
			buf[BS_DrvNum] = 0x80;						/* Drive number (for int13) */\r
			buf[BS_BootSig] = 0x29;						/* Extended boot signature */\r
			memcpy(buf + BS_VolLab, "NO NAME    " "FAT     ", 19);	/* Volume label, FAT signature */\r
		}\r
		st_word(buf + BS_55AA, 0xAA55);					/* Signature (offset is fixed here regardless of sector size) */\r
		if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Write it to the VBR sector */\r
\r
		/* Create FSINFO record if needed */\r
		if (fsty == FS_FAT32) {\r
			disk_write(pdrv, buf, b_vol + 6, 1);		/* Write backup VBR (VBR + 6) */\r
			memset(buf, 0, ss);\r
			st_dword(buf + FSI_LeadSig, 0x41615252);\r
			st_dword(buf + FSI_StrucSig, 0x61417272);\r
			st_dword(buf + FSI_Free_Count, n_clst - 1);	/* Number of free clusters */\r
			st_dword(buf + FSI_Nxt_Free, 2);			/* Last allocated cluster# */\r
			st_word(buf + BS_55AA, 0xAA55);\r
			disk_write(pdrv, buf, b_vol + 7, 1);		/* Write backup FSINFO (VBR + 7) */\r
			disk_write(pdrv, buf, b_vol + 1, 1);		/* Write original FSINFO (VBR + 1) */\r
		}\r
\r
		/* Initialize FAT area */\r
		memset(buf, 0, sz_buf * ss);\r
		sect = b_fat;		/* FAT start sector */\r
		for (i = 0; i < n_fat; i++) {			/* Initialize FATs each */\r
			if (fsty == FS_FAT32) {\r
				st_dword(buf + 0, 0xFFFFFFF8);	/* FAT[0] */\r
				st_dword(buf + 4, 0xFFFFFFFF);	/* FAT[1] */\r
				st_dword(buf + 8, 0x0FFFFFFF);	/* FAT[2] (root directory) */\r
			} else {\r
				st_dword(buf + 0, (fsty == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8);	/* FAT[0] and FAT[1] */\r
			}\r
			nsect = sz_fat;		/* Number of FAT sectors */\r
			do {	/* Fill FAT sectors */\r
				n = (nsect > sz_buf) ? sz_buf : nsect;\r
				if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
				memset(buf, 0, ss);	/* Rest of FAT all are cleared */\r
				sect += n; nsect -= n;\r
			} while (nsect);\r
		}\r
\r
		/* Initialize root directory (fill with zero) */\r
		nsect = (fsty == FS_FAT32) ? pau : sz_dir;	/* Number of root directory sectors */\r
		do {\r
			n = (nsect > sz_buf) ? sz_buf : nsect;\r
			if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
			sect += n; nsect -= n;\r
		} while (nsect);\r
	}\r
\r
	/* A FAT volume has been created here */\r
\r
	/* Determine system ID in the MBR partition table */\r
	if (FF_FS_EXFAT && fsty == FS_EXFAT) {\r
		sys = 0x07;		/* exFAT */\r
	} else if (fsty == FS_FAT32) {\r
		sys = 0x0C;		/* FAT32X */\r
	} else if (sz_vol >= 0x10000) {\r
		sys = 0x06;		/* FAT12/16 (large) */\r
	} else if (fsty == FS_FAT16) {\r
		sys = 0x04;		/* FAT16 */\r
	} else {\r
		sys = 0x01;		/* FAT12 */\r
	}\r
\r
	/* Update partition information */\r
	if (FF_MULTI_PARTITION && ipart != 0) {	/* Volume is in the existing partition */\r
		if (!FF_LBA64 || !(fsopt & 0x80)) {	/* Is the partition in MBR? */\r
			/* Update system ID in the partition table */\r
			if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Read the MBR */\r
			buf[MBR_Table + (ipart - 1) * SZ_PTE + PTE_System] = sys;			/* Set system ID */\r
			if (disk_write(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);	/* Write it back to the MBR */\r
		}\r
	} else {								/* Volume as a new single partition */\r
		if (!(fsopt & FM_SFD)) {			/* Create partition table if not in SFD format */\r
			lba[0] = sz_vol; lba[1] = 0;\r
			res = create_partition(pdrv, lba, sys, buf);\r
			if (res != FR_OK) LEAVE_MKFS(res);\r
		}\r
	}\r
\r
	if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);\r
\r
	LEAVE_MKFS(FR_OK);\r
}\r
\r
\r
\r
\r
#if FF_MULTI_PARTITION\r
/*-----------------------------------------------------------------------*/\r
/* Create Partition Table on the Physical Drive                          */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_fdisk (\r
	BYTE pdrv,			/* Physical drive number */\r
	const LBA_t ptbl[],	/* Pointer to the size table for each partitions */\r
	void* work			/* Pointer to the working buffer (null: use heap memory) */\r
)\r
{\r
	BYTE *buf = (BYTE*)work;\r
	DSTATUS stat;\r
	FRESULT res;\r
\r
\r
	/* Initialize the physical drive */\r
	stat = disk_initialize(pdrv);\r
	if (stat & STA_NOINIT) return FR_NOT_READY;\r
	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r
\r
#if FF_USE_LFN == 3\r
	if (!buf) buf = ff_memalloc(FF_MAX_SS);	/* Use heap memory for working buffer */\r
#endif\r
	if (!buf) return FR_NOT_ENOUGH_CORE;\r
\r
	res = create_partition(pdrv, ptbl, 0x07, buf);	/* Create partitions (system ID is temporary setting and determined by f_mkfs) */\r
\r
	LEAVE_MKFS(res);\r
}\r
\r
#endif /* FF_MULTI_PARTITION */\r
#endif /* !FF_FS_READONLY && FF_USE_MKFS */\r
\r
\r
\r
\r
#if FF_USE_STRFUNC\r
#if FF_USE_LFN && FF_LFN_UNICODE && (FF_STRF_ENCODE < 0 || FF_STRF_ENCODE > 3)\r
#error Wrong FF_STRF_ENCODE setting\r
#endif\r
/*-----------------------------------------------------------------------*/\r
/* Get a String from the File                                            */\r
/*-----------------------------------------------------------------------*/\r
\r
TCHAR* f_gets (\r
	TCHAR* buff,	/* Pointer to the buffer to store read string */\r
	int len,		/* Size of string buffer (items) */\r
	FIL* fp			/* Pointer to the file object */\r
)\r
{\r
	int nc = 0;\r
	TCHAR *p = buff;\r
	BYTE s[4];\r
	UINT rc;\r
	DWORD dc;\r
#if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE <= 2\r
	WCHAR wc;\r
#endif\r
#if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE == 3\r
	UINT ct;\r
#endif\r
\r
#if FF_USE_LFN && FF_LFN_UNICODE			/* With code conversion (Unicode API) */\r
	/* Make a room for the character and terminator  */\r
	if (FF_LFN_UNICODE == 1) len -= (FF_STRF_ENCODE == 0) ? 1 : 2;\r
	if (FF_LFN_UNICODE == 2) len -= (FF_STRF_ENCODE == 0) ? 3 : 4;\r
	if (FF_LFN_UNICODE == 3) len -= 1;\r
	while (nc < len) {\r
#if FF_STRF_ENCODE == 0				/* Read a character in ANSI/OEM */\r
		f_read(fp, s, 1, &rc);		/* Get a code unit */\r
		if (rc != 1) break;			/* EOF? */\r
		wc = s[0];\r
		if (dbc_1st((BYTE)wc)) {	/* DBC 1st byte? */\r
			f_read(fp, s, 1, &rc);	/* Get 2nd byte */\r
			if (rc != 1 || !dbc_2nd(s[0])) continue;	/* Wrong code? */\r
			wc = wc << 8 | s[0];\r
		}\r
		dc = ff_oem2uni(wc, CODEPAGE);	/* Convert ANSI/OEM into Unicode */\r
		if (dc == 0) continue;		/* Conversion error? */\r
#elif FF_STRF_ENCODE == 1 || FF_STRF_ENCODE == 2 	/* Read a character in UTF-16LE/BE */\r
		f_read(fp, s, 2, &rc);		/* Get a code unit */\r
		if (rc != 2) break;			/* EOF? */\r
		dc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];\r
		if (IsSurrogateL(dc)) continue;	/* Broken surrogate pair? */\r
		if (IsSurrogateH(dc)) {		/* High surrogate? */\r
			f_read(fp, s, 2, &rc);	/* Get low surrogate */\r
			if (rc != 2) break;		/* EOF? */\r
			wc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];\r
			if (!IsSurrogateL(wc)) continue;	/* Broken surrogate pair? */\r
			dc = ((dc & 0x3FF) + 0x40) << 10 | (wc & 0x3FF);	/* Merge surrogate pair */\r
		}\r
#else	/* Read a character in UTF-8 */\r
		f_read(fp, s, 1, &rc);		/* Get a code unit */\r
		if (rc != 1) break;			/* EOF? */\r
		dc = s[0];\r
		if (dc >= 0x80) {			/* Multi-byte sequence? */\r
			ct = 0;\r
			if ((dc & 0xE0) == 0xC0) {	/* 2-byte sequence? */\r
				dc &= 0x1F; ct = 1;\r
			}\r
			if ((dc & 0xF0) == 0xE0) {	/* 3-byte sequence? */\r
				dc &= 0x0F; ct = 2;\r
			}\r
			if ((dc & 0xF8) == 0xF0) {	/* 4-byte sequence? */\r
				dc &= 0x07; ct = 3;\r
			}\r
			if (ct == 0) continue;\r
			f_read(fp, s, ct, &rc);	/* Get trailing bytes */\r
			if (rc != ct) break;\r
			rc = 0;\r
			do {	/* Merge the byte sequence */\r
				if ((s[rc] & 0xC0) != 0x80) break;\r
				dc = dc << 6 | (s[rc] & 0x3F);\r
			} while (++rc < ct);\r
			if (rc != ct || dc < 0x80 || IsSurrogate(dc) || dc >= 0x110000) continue;	/* Wrong encoding? */\r
		}\r
#endif\r
		/* A code point is avaialble in dc to be output */\r
\r
		if (FF_USE_STRFUNC == 2 && dc == '\r') continue;	/* Strip \r off if needed */\r
#if FF_LFN_UNICODE == 1	|| FF_LFN_UNICODE == 3	/* Output it in UTF-16/32 encoding */\r
		if (FF_LFN_UNICODE == 1 && dc >= 0x10000) {	/* Out of BMP at UTF-16? */\r
			*p++ = (TCHAR)(0xD800 | ((dc >> 10) - 0x40)); nc++;	/* Make and output high surrogate */\r
			dc = 0xDC00 | (dc & 0x3FF);		/* Make low surrogate */\r
		}\r
		*p++ = (TCHAR)dc; nc++;\r
		if (dc == '\n') break;	/* End of line? */\r
#elif FF_LFN_UNICODE == 2		/* Output it in UTF-8 encoding */\r
		if (dc < 0x80) {	/* Single byte? */\r
			*p++ = (TCHAR)dc;\r
			nc++;\r
			if (dc == '\n') break;	/* End of line? */\r
		} else if (dc < 0x800) {	/* 2-byte sequence? */\r
			*p++ = (TCHAR)(0xC0 | (dc >> 6 & 0x1F));\r
			*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));\r
			nc += 2;\r
		} else if (dc < 0x10000) {	/* 3-byte sequence? */\r
			*p++ = (TCHAR)(0xE0 | (dc >> 12 & 0x0F));\r
			*p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));\r
			*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));\r
			nc += 3;\r
		} else {					/* 4-byte sequence */\r
			*p++ = (TCHAR)(0xF0 | (dc >> 18 & 0x07));\r
			*p++ = (TCHAR)(0x80 | (dc >> 12 & 0x3F));\r
			*p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));\r
			*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));\r
			nc += 4;\r
		}\r
#endif\r
	}\r
\r
#else			/* Byte-by-byte read without any conversion (ANSI/OEM API) */\r
	len -= 1;	/* Make a room for the terminator */\r
	while (nc < len) {\r
		f_read(fp, s, 1, &rc);	/* Get a byte */\r
		if (rc != 1) break;		/* EOF? */\r
		dc = s[0];\r
		if (FF_USE_STRFUNC == 2 && dc == '\r') continue;\r
		*p++ = (TCHAR)dc; nc++;\r
		if (dc == '\n') break;\r
	}\r
#endif\r
\r
	*p = 0;		/* Terminate the string */\r
	return nc ? buff : 0;	/* When no data read due to EOF or error, return with error. */\r
}\r
\r
\r
\r
\r
#if !FF_FS_READONLY\r
#include <stdarg.h>\r
#define SZ_PUTC_BUF	64\r
#define SZ_NUM_BUF	32\r
\r
/*-----------------------------------------------------------------------*/\r
/* Put a Character to the File (with sub-functions)                      */\r
/*-----------------------------------------------------------------------*/\r
\r
/* Output buffer and work area */\r
\r
typedef struct {\r
	FIL *fp;		/* Ptr to the writing file */\r
	int idx, nchr;	/* Write index of buf[] (-1:error), number of encoding units written */\r
#if FF_USE_LFN && FF_LFN_UNICODE == 1\r
	WCHAR hs;\r
#elif FF_USE_LFN && FF_LFN_UNICODE == 2\r
	BYTE bs[4];\r
	UINT wi, ct;\r
#endif\r
	BYTE buf[SZ_PUTC_BUF];	/* Write buffer */\r
} putbuff;\r
\r
\r
/* Buffered file write with code conversion */\r
\r
static void putc_bfd (putbuff* pb, TCHAR c)\r
{\r
	UINT n;\r
	int i, nc;\r
#if FF_USE_LFN && FF_LFN_UNICODE\r
	WCHAR hs, wc;\r
#if FF_LFN_UNICODE == 2\r
	DWORD dc;\r
	const TCHAR* tp;\r
#endif\r
#endif\r
\r
	if (FF_USE_STRFUNC == 2 && c == '\n') {	 /* LF -> CRLF conversion */\r
		putc_bfd(pb, '\r');\r
	}\r
\r
	i = pb->idx;			/* Write index of pb->buf[] */\r
	if (i < 0) return;		/* In write error? */\r
	nc = pb->nchr;			/* Write unit counter */\r
\r
#if FF_USE_LFN && FF_LFN_UNICODE\r
#if FF_LFN_UNICODE == 1		/* UTF-16 input */\r
	if (IsSurrogateH(c)) {	/* Is this a high-surrogate? */\r
		pb->hs = c; return;	/* Save it for next */\r
	}\r
	hs = pb->hs; pb->hs = 0;\r
	if (hs != 0) {			/* Is there a leading high-surrogate? */\r
		if (!IsSurrogateL(c)) hs = 0;	/* Discard high-surrogate if not a surrogate pair */\r
	} else {\r
		if (IsSurrogateL(c)) return;	/* Discard stray low-surrogate */\r
	}\r
	wc = c;\r
#elif FF_LFN_UNICODE == 2	/* UTF-8 input */\r
	for (;;) {\r
		if (pb->ct == 0) {	/* Out of multi-byte sequence? */\r
			pb->bs[pb->wi = 0] = (BYTE)c;	/* Save 1st byte */\r
			if ((BYTE)c < 0x80) break;					/* Single byte code? */\r
			if (((BYTE)c & 0xE0) == 0xC0) pb->ct = 1;	/* 2-byte sequence? */\r
			if (((BYTE)c & 0xF0) == 0xE0) pb->ct = 2;	/* 3-byte sequence? */\r
			if (((BYTE)c & 0xF8) == 0xF0) pb->ct = 3;	/* 4-byte sequence? */\r
			return;										/* Wrong leading byte (discard it) */\r
		} else {				/* In the multi-byte sequence */\r
			if (((BYTE)c & 0xC0) != 0x80) {	/* Broken sequence? */\r
				pb->ct = 0; continue;		/* Discard the sequense */\r
			}\r
			pb->bs[++pb->wi] = (BYTE)c;	/* Save the trailing byte */\r
			if (--pb->ct == 0) break;	/* End of the sequence? */\r
			return;\r
		}\r
	}\r
	tp = (const TCHAR*)pb->bs;\r
	dc = tchar2uni(&tp);			/* UTF-8 ==> UTF-16 */\r
	if (dc == 0xFFFFFFFF) return;	/* Wrong code? */\r
	hs = (WCHAR)(dc >> 16);\r
	wc = (WCHAR)dc;\r
#elif FF_LFN_UNICODE == 3	/* UTF-32 input */\r
	if (IsSurrogate(c) || c >= 0x110000) return;	/* Discard invalid code */\r
	if (c >= 0x10000) {		/* Out of BMP? */\r
		hs = (WCHAR)(0xD800 | ((c >> 10) - 0x40)); 	/* Make high surrogate */\r
		wc = 0xDC00 | (c & 0x3FF);					/* Make low surrogate */\r
	} else {\r
		hs = 0;\r
		wc = (WCHAR)c;\r
	}\r
#endif\r
	/* A code point in UTF-16 is available in hs and wc */\r
\r
#if FF_STRF_ENCODE == 1		/* Write a code point in UTF-16LE */\r
	if (hs != 0) {	/* Surrogate pair? */\r
		st_word(&pb->buf[i], hs);\r
		i += 2;\r
		nc++;\r
	}\r
	st_word(&pb->buf[i], wc);\r
	i += 2;\r
#elif FF_STRF_ENCODE == 2	/* Write a code point in UTF-16BE */\r
	if (hs != 0) {	/* Surrogate pair? */\r
		pb->buf[i++] = (BYTE)(hs >> 8);\r
		pb->buf[i++] = (BYTE)hs;\r
		nc++;\r
	}\r
	pb->buf[i++] = (BYTE)(wc >> 8);\r
	pb->buf[i++] = (BYTE)wc;\r
#elif FF_STRF_ENCODE == 3	/* Write a code point in UTF-8 */\r
	if (hs != 0) {	/* 4-byte sequence? */\r
		nc += 3;\r
		hs = (hs & 0x3FF) + 0x40;\r
		pb->buf[i++] = (BYTE)(0xF0 | hs >> 8);\r
		pb->buf[i++] = (BYTE)(0x80 | (hs >> 2 & 0x3F));\r
		pb->buf[i++] = (BYTE)(0x80 | (hs & 3) << 4 | (wc >> 6 & 0x0F));\r
		pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));\r
	} else {\r
		if (wc < 0x80) {	/* Single byte? */\r
			pb->buf[i++] = (BYTE)wc;\r
		} else {\r
			if (wc < 0x800) {	/* 2-byte sequence? */\r
				nc += 1;\r
				pb->buf[i++] = (BYTE)(0xC0 | wc >> 6);\r
			} else {			/* 3-byte sequence */\r
				nc += 2;\r
				pb->buf[i++] = (BYTE)(0xE0 | wc >> 12);\r
				pb->buf[i++] = (BYTE)(0x80 | (wc >> 6 & 0x3F));\r
			}\r
			pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));\r
		}\r
	}\r
#else						/* Write a code point in ANSI/OEM */\r
	if (hs != 0) return;\r
	wc = ff_uni2oem(wc, CODEPAGE);	/* UTF-16 ==> ANSI/OEM */\r
	if (wc == 0) return;\r
	if (wc >= 0x100) {\r
		pb->buf[i++] = (BYTE)(wc >> 8); nc++;\r
	}\r
	pb->buf[i++] = (BYTE)wc;\r
#endif\r
\r
#else							/* ANSI/OEM input (without re-encoding) */\r
	pb->buf[i++] = (BYTE)c;\r
#endif\r
\r
	if (i >= (int)(sizeof pb->buf) - 4) {	/* Write buffered characters to the file */\r
		f_write(pb->fp, pb->buf, (UINT)i, &n);\r
		i = (n == (UINT)i) ? 0 : -1;\r
	}\r
	pb->idx = i;\r
	pb->nchr = nc + 1;\r
}\r
\r
\r
/* Flush remaining characters in the buffer */\r
\r
static int putc_flush (putbuff* pb)\r
{\r
	UINT nw;\r
\r
	if (   pb->idx >= 0	/* Flush buffered characters to the file */\r
		&& f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK\r
		&& (UINT)pb->idx == nw) return pb->nchr;\r
	return -1;\r
}\r
\r
\r
/* Initialize write buffer */\r
\r
static void putc_init (putbuff* pb, FIL* fp)\r
{\r
	memset(pb, 0, sizeof (putbuff));\r
	pb->fp = fp;\r
}\r
\r
\r
\r
int f_putc (\r
	TCHAR c,	/* A character to be output */\r
	FIL* fp		/* Pointer to the file object */\r
)\r
{\r
	putbuff pb;\r
\r
\r
	putc_init(&pb, fp);\r
	putc_bfd(&pb, c);	/* Put the character */\r
	return putc_flush(&pb);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Put a String to the File                                              */\r
/*-----------------------------------------------------------------------*/\r
\r
int f_puts (\r
	const TCHAR* str,	/* Pointer to the string to be output */\r
	FIL* fp				/* Pointer to the file object */\r
)\r
{\r
	putbuff pb;\r
\r
\r
	putc_init(&pb, fp);\r
	while (*str) putc_bfd(&pb, *str++);		/* Put the string */\r
	return putc_flush(&pb);\r
}\r
\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Put a Formatted String to the File (with sub-functions)               */\r
/*-----------------------------------------------------------------------*/\r
#if FF_PRINT_FLOAT && FF_INTDEF == 2\r
#include <math.h>\r
\r
static int ilog10 (double n)	/* Calculate log10(n) in integer output */\r
{\r
	int rv = 0;\r
\r
	while (n >= 10) {	/* Decimate digit in right shift */\r
		if (n >= 100000) {\r
			n /= 100000; rv += 5;\r
		} else {\r
			n /= 10; rv++;\r
		}\r
	}\r
	while (n < 1) {		/* Decimate digit in left shift */\r
		if (n < 0.00001) {\r
			n *= 100000; rv -= 5;\r
		} else {\r
			n *= 10; rv--;\r
		}\r
	}\r
	return rv;\r
}\r
\r
\r
static double i10x (int n)	/* Calculate 10^n in integer input */\r
{\r
	double rv = 1;\r
\r
	while (n > 0) {		/* Left shift */\r
		if (n >= 5) {\r
			rv *= 100000; n -= 5;\r
		} else {\r
			rv *= 10; n--;\r
		}\r
	}\r
	while (n < 0) {		/* Right shift */\r
		if (n <= -5) {\r
			rv /= 100000; n += 5;\r
		} else {\r
			rv /= 10; n++;\r
		}\r
	}\r
	return rv;\r
}\r
\r
\r
static void ftoa (\r
	char* buf,	/* Buffer to output the floating point string */\r
	double val,	/* Value to output */\r
	int prec,	/* Number of fractional digits */\r
	TCHAR fmt	/* Notation */\r
)\r
{\r
	int d;\r
	int e = 0, m = 0;\r
	char sign = 0;\r
	double w;\r
	const char *er = 0;\r
	const char ds = FF_PRINT_FLOAT == 2 ? ',' : '.';\r
\r
\r
	if (isnan(val)) {			/* Not a number? */\r
		er = "NaN";\r
	} else {\r
		if (prec < 0) prec = 6;	/* Default precision? (6 fractional digits) */\r
		if (val < 0) {			/* Negative? */\r
			val = 0 - val; sign = '-';\r
		} else {\r
			sign = '+';\r
		}\r
		if (isinf(val)) {		/* Infinite? */\r
			er = "INF";\r
		} else {\r
			if (fmt == 'f') {	/* Decimal notation? */\r
				val += i10x(0 - prec) / 2;	/* Round (nearest) */\r
				m = ilog10(val);\r
				if (m < 0) m = 0;\r
				if (m + prec + 3 >= SZ_NUM_BUF) er = "OV";	/* Buffer overflow? */\r
			} else {			/* E notation */\r
				if (val != 0) {		/* Not a true zero? */\r
					val += i10x(ilog10(val) - prec) / 2;	/* Round (nearest) */\r
					e = ilog10(val);\r
					if (e > 99 || prec + 7 >= SZ_NUM_BUF) {	/* Buffer overflow or E > +99? */\r
						er = "OV";\r
					} else {\r
						if (e < -99) e = -99;\r
						val /= i10x(e);	/* Normalize */\r
					}\r
				}\r
			}\r
		}\r
		if (!er) {	/* Not error condition */\r
			if (sign == '-') *buf++ = sign;	/* Add a - if negative value */\r
			do {				/* Put decimal number */\r
				if (m == -1) *buf++ = ds;	/* Insert a decimal separator when get into fractional part */\r
				w = i10x(m);				/* Snip the highest digit d */\r
				d = (int)(val / w); val -= d * w;\r
				*buf++ = (char)('0' + d);	/* Put the digit */\r
			} while (--m >= -prec);			/* Output all digits specified by prec */\r
			if (fmt != 'f') {	/* Put exponent if needed */\r
				*buf++ = (char)fmt;\r
				if (e < 0) {\r
					e = 0 - e; *buf++ = '-';\r
				} else {\r
					*buf++ = '+';\r
				}\r
				*buf++ = (char)('0' + e / 10);\r
				*buf++ = (char)('0' + e % 10);\r
			}\r
		}\r
	}\r
	if (er) {	/* Error condition */\r
		if (sign) *buf++ = sign;		/* Add sign if needed */\r
		do {		/* Put error symbol */\r
			*buf++ = *er++;\r
		} while (*er);\r
	}\r
	*buf = 0;	/* Term */\r
}\r
#endif	/* FF_PRINT_FLOAT && FF_INTDEF == 2 */\r
\r
\r
\r
int f_printf (\r
	FIL* fp,			/* Pointer to the file object */\r
	const TCHAR* fmt,	/* Pointer to the format string */\r
	...					/* Optional arguments... */\r
)\r
{\r
	va_list arp;\r
	putbuff pb;\r
	UINT i, j, w, f, r;\r
	int prec;\r
#if FF_PRINT_LLI && FF_INTDEF == 2\r
	QWORD v;\r
#else\r
	DWORD v;\r
#endif\r
	TCHAR *tp;\r
	TCHAR tc, pad;\r
	TCHAR nul = 0;\r
	char d, str[SZ_NUM_BUF];\r
\r
\r
	putc_init(&pb, fp);\r
\r
	va_start(arp, fmt);\r
\r
	for (;;) {\r
		tc = *fmt++;\r
		if (tc == 0) break;			/* End of format string */\r
		if (tc != '%') {			/* Not an escape character (pass-through) */\r
			putc_bfd(&pb, tc);\r
			continue;\r
		}\r
		f = w = 0; pad = ' '; prec = -1;	/* Initialize parms */\r
		tc = *fmt++;\r
		if (tc == '0') {			/* Flag: '0' padded */\r
			pad = '0'; tc = *fmt++;\r
		} else if (tc == '-') {		/* Flag: Left aligned */\r
			f = 2; tc = *fmt++;\r
		}\r
		if (tc == '*') {			/* Minimum width from an argument */\r
			w = va_arg(arp, int);\r
			tc = *fmt++;\r
		} else {\r
			while (IsDigit(tc)) {	/* Minimum width */\r
				w = w * 10 + tc - '0';\r
				tc = *fmt++;\r
			}\r
		}\r
		if (tc == '.') {			/* Precision */\r
			tc = *fmt++;\r
			if (tc == '*') {		/* Precision from an argument */\r
				prec = va_arg(arp, int);\r
				tc = *fmt++;\r
			} else {\r
				prec = 0;\r
				while (IsDigit(tc)) {	/* Precision */\r
					prec = prec * 10 + tc - '0';\r
					tc = *fmt++;\r
				}\r
			}\r
		}\r
		if (tc == 'l') {			/* Size: long int */\r
			f |= 4; tc = *fmt++;\r
#if FF_PRINT_LLI && FF_INTDEF == 2\r
			if (tc == 'l') {		/* Size: long long int */\r
				f |= 8; tc = *fmt++;\r
			}\r
#endif\r
		}\r
		if (tc == 0) break;			/* End of format string */\r
		switch (tc) {				/* Atgument type is... */\r
		case 'b':					/* Unsigned binary */\r
			r = 2; break;\r
\r
		case 'o':					/* Unsigned octal */\r
			r = 8; break;\r
\r
		case 'd':					/* Signed decimal */\r
		case 'u': 					/* Unsigned decimal */\r
			r = 10; break;\r
\r
		case 'x':					/* Unsigned hexadecimal (lower case) */\r
		case 'X': 					/* Unsigned hexadecimal (upper case) */\r
			r = 16; break;\r
\r
		case 'c':					/* Character */\r
			putc_bfd(&pb, (TCHAR)va_arg(arp, int));\r
			continue;\r
\r
		case 's':					/* String */\r
			tp = va_arg(arp, TCHAR*);	/* Get a pointer argument */\r
			if (!tp) tp = &nul;		/* Null ptr generates a null string */\r
			for (j = 0; tp[j]; j++) ;	/* j = tcslen(tp) */\r
			if (prec >= 0 && j > (UINT)prec) j = prec;	/* Limited length of string body */\r
			for ( ; !(f & 2) && j < w; j++) putc_bfd(&pb, pad);	/* Left pads */\r
			while (*tp && prec--) putc_bfd(&pb, *tp++);	/* Body */\r
			while (j++ < w) putc_bfd(&pb, ' ');			/* Right pads */\r
			continue;\r
#if FF_PRINT_FLOAT && FF_INTDEF == 2\r
		case 'f':					/* Floating point (decimal) */\r
		case 'e':					/* Floating point (e) */\r
		case 'E':					/* Floating point (E) */\r
			ftoa(str, va_arg(arp, double), prec, tc);	/* Make a floating point string */\r
			for (j = strlen(str); !(f & 2) && j < w; j++) putc_bfd(&pb, pad);	/* Left pads */\r
			for (i = 0; str[i]; putc_bfd(&pb, str[i++])) ;	/* Body */\r
			while (j++ < w) putc_bfd(&pb, ' ');	/* Right pads */\r
			continue;\r
#endif\r
		default:					/* Unknown type (pass-through) */\r
			putc_bfd(&pb, tc); continue;\r
		}\r
\r
		/* Get an integer argument and put it in numeral */\r
#if FF_PRINT_LLI && FF_INTDEF == 2\r
		if (f & 8) {		/* long long argument? */\r
			v = (QWORD)va_arg(arp, long long);\r
		} else if (f & 4) {	/* long argument? */\r
			v = (tc == 'd') ? (QWORD)(long long)va_arg(arp, long) : (QWORD)va_arg(arp, unsigned long);\r
		} else {			/* int/short/char argument */\r
			v = (tc == 'd') ? (QWORD)(long long)va_arg(arp, int) : (QWORD)va_arg(arp, unsigned int);\r
		}\r
		if (tc == 'd' && (v & 0x8000000000000000)) {	/* Negative value? */\r
			v = 0 - v; f |= 1;\r
		}\r
#else\r
		if (f & 4) {	/* long argument? */\r
			v = (DWORD)va_arg(arp, long);\r
		} else {		/* int/short/char argument */\r
			v = (tc == 'd') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int);\r
		}\r
		if (tc == 'd' && (v & 0x80000000)) {	/* Negative value? */\r
			v = 0 - v; f |= 1;\r
		}\r
#endif\r
		i = 0;\r
		do {	/* Make an integer number string */\r
			d = (char)(v % r); v /= r;\r
			if (d > 9) d += (tc == 'x') ? 0x27 : 0x07;\r
			str[i++] = d + '0';\r
		} while (v && i < SZ_NUM_BUF);\r
		if (f & 1) str[i++] = '-';	/* Sign */\r
		/* Write it */\r
		for (j = i; !(f & 2) && j < w; j++) {	/* Left pads */\r
			putc_bfd(&pb, pad);\r
		}\r
		do {				/* Body */\r
			putc_bfd(&pb, (TCHAR)str[--i]);\r
		} while (i);\r
		while (j++ < w) {	/* Right pads */\r
			putc_bfd(&pb, ' ');\r
		}\r
	}\r
\r
	va_end(arp);\r
\r
	return putc_flush(&pb);\r
}\r
\r
#endif /* !FF_FS_READONLY */\r
#endif /* FF_USE_STRFUNC */\r
\r
\r
\r
#if FF_CODE_PAGE == 0\r
/*-----------------------------------------------------------------------*/\r
/* Set Active Codepage for the Path Name                                 */\r
/*-----------------------------------------------------------------------*/\r
\r
FRESULT f_setcp (\r
	WORD cp		/* Value to be set as active code page */\r
)\r
{\r
	static const WORD       validcp[22] = {  437,   720,   737,   771,   775,   850,   852,   855,   857,   860,   861,   862,   863,   864,   865,   866,   869,   932,   936,   949,   950, 0};\r
	static const BYTE *const tables[22] = {Ct437, Ct720, Ct737, Ct771, Ct775, Ct850, Ct852, Ct855, Ct857, Ct860, Ct861, Ct862, Ct863, Ct864, Ct865, Ct866, Ct869, Dc932, Dc936, Dc949, Dc950, 0};\r
	UINT i;\r
\r
\r
	for (i = 0; validcp[i] != 0 && validcp[i] != cp; i++) ;	/* Find the code page */\r
	if (validcp[i] != cp) return FR_INVALID_PARAMETER;		/* Not found? */\r
\r
	CodePage = cp;\r
	if (cp >= 900) {	/* DBCS */\r
		ExCvt = 0;\r
		DbcTbl = tables[i];\r
	} else {			/* SBCS */\r
		ExCvt = tables[i];\r
		DbcTbl = 0;\r
	}\r
	return FR_OK;\r
}\r
#endif	/* FF_CODE_PAGE == 0 */\r
\r