diff options
Diffstat (limited to 'tools/iso/kernel.soso/fatfs_ff.c')
| -rw-r--r-- | tools/iso/kernel.soso/fatfs_ff.c | 6448 |
1 files changed, 0 insertions, 6448 deletions
diff --git a/tools/iso/kernel.soso/fatfs_ff.c b/tools/iso/kernel.soso/fatfs_ff.c deleted file mode 100644 index ec19b3ae..00000000 --- a/tools/iso/kernel.soso/fatfs_ff.c +++ /dev/null @@ -1,6448 +0,0 @@ -/*----------------------------------------------------------------------------/ -/ FatFs - Generic FAT Filesystem Module R0.13a / -/-----------------------------------------------------------------------------/ -/ -/ Copyright (C) 2017, ChaN, all right reserved. -/ -/ FatFs module is an open source software. Redistribution and use of FatFs in -/ source and binary forms, with or without modification, are permitted provided -/ that the following condition is met: -/ -/ 1. Redistributions of source code must retain the above copyright notice, -/ this condition and the following disclaimer. -/ -/ This software is provided by the copyright holder and contributors "AS IS" -/ and any warranties related to this software are DISCLAIMED. -/ The copyright owner or contributors be NOT LIABLE for any damages caused -/ by use of this software. -/ -/----------------------------------------------------------------------------*/ - - -#include "fatfs_ff.h" /* Declarations of FatFs API */ -#include "fatfs_diskio.h" /* Declarations of device I/O functions */ - - -/*-------------------------------------------------------------------------- - - Module Private Definitions - ----------------------------------------------------------------------------*/ - -#if FF_DEFINED != 89352 /* Revision ID */ -#error Wrong include file (ff.h). -#endif - - -/* Character code support macros */ -#define IsUpper(c) ((c) >= 'A' && (c) <= 'Z') -#define IsLower(c) ((c) >= 'a' && (c) <= 'z') -#define IsDigit(c) ((c) >= '0' && (c) <= '9') -#define IsSurrogate(c) ((c) >= 0xD800 && (c) <= 0xDFFF) -#define IsSurrogateH(c) ((c) >= 0xD800 && (c) <= 0xDBFF) -#define IsSurrogateL(c) ((c) >= 0xDC00 && (c) <= 0xDFFF) - - -/* Additional file attribute bits for internal use */ -#define AM_VOL 0x08 /* Volume label */ -#define AM_LFN 0x0F /* LFN entry */ -#define AM_MASK 0x3F /* Mask of defined bits */ - - -/* Additional file access control and file status flags for internal use */ -#define FA_SEEKEND 0x20 /* Seek to end of the file on file open */ -#define FA_MODIFIED 0x40 /* File has been modified */ -#define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */ - - -/* Name status flags in fn[11] */ -#define NSFLAG 11 /* Index of the name status byte */ -#define NS_LOSS 0x01 /* Out of 8.3 format */ -#define NS_LFN 0x02 /* Force to create LFN entry */ -#define NS_LAST 0x04 /* Last segment */ -#define NS_BODY 0x08 /* Lower case flag (body) */ -#define NS_EXT 0x10 /* Lower case flag (ext) */ -#define NS_DOT 0x20 /* Dot entry */ -#define NS_NOLFN 0x40 /* Do not find LFN */ -#define NS_NONAME 0x80 /* Not followed */ - - -/* Limits and boundaries */ -#define MAX_DIR 0x200000 /* Max size of FAT directory */ -#define MAX_DIR_EX 0x10000000 /* Max size of exFAT directory */ -#define MAX_FAT12 0xFF5 /* Max FAT12 clusters (differs from specs, but right for real DOS/Windows behavior) */ -#define MAX_FAT16 0xFFF5 /* Max FAT16 clusters (differs from specs, but right for real DOS/Windows behavior) */ -#define MAX_FAT32 0x0FFFFFF5 /* Max FAT32 clusters (not specified, practical limit) */ -#define MAX_EXFAT 0x7FFFFFFD /* Max exFAT clusters (differs from specs, implementation limit) */ - - -/* FatFs refers the FAT structure as simple byte array instead of structure member -/ because the C structure is not binary compatible between different platforms */ - -#define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */ -#define BS_OEMName 3 /* OEM name (8-byte) */ -#define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */ -#define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */ -#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */ -#define BPB_NumFATs 16 /* Number of FATs (BYTE) */ -#define BPB_RootEntCnt 17 /* Size of root directory area for FAT [entry] (WORD) */ -#define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */ -#define BPB_Media 21 /* Media descriptor byte (BYTE) */ -#define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */ -#define BPB_SecPerTrk 24 /* Number of sectors per track for int13h [sector] (WORD) */ -#define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */ -#define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */ -#define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */ -#define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */ -#define BS_NTres 37 /* WindowsNT error flag (BYTE) */ -#define BS_BootSig 38 /* Extended boot signature (BYTE) */ -#define BS_VolID 39 /* Volume serial number (DWORD) */ -#define BS_VolLab 43 /* Volume label string (8-byte) */ -#define BS_FilSysType 54 /* Filesystem type string (8-byte) */ -#define BS_BootCode 62 /* Boot code (448-byte) */ -#define BS_55AA 510 /* Signature word (WORD) */ - -#define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */ -#define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */ -#define BPB_FSVer32 42 /* FAT32: Filesystem version (WORD) */ -#define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */ -#define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */ -#define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */ -#define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */ -#define BS_NTres32 65 /* FAT32: Error flag (BYTE) */ -#define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */ -#define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */ -#define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */ -#define BS_FilSysType32 82 /* FAT32: Filesystem type string (8-byte) */ -#define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */ - -#define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */ -#define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */ -#define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */ -#define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */ -#define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */ -#define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */ -#define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */ -#define BPB_RootClusEx 96 /* exFAT: Root directory start cluster (DWORD) */ -#define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */ -#define BPB_FSVerEx 104 /* exFAT: Filesystem version (WORD) */ -#define BPB_VolFlagEx 106 /* exFAT: Volume flags (WORD) */ -#define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in unit of byte (BYTE) */ -#define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in unit of sector (BYTE) */ -#define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */ -#define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */ -#define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */ -#define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */ -#define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */ - -#define DIR_Name 0 /* Short file name (11-byte) */ -#define DIR_Attr 11 /* Attribute (BYTE) */ -#define DIR_NTres 12 /* Lower case flag (BYTE) */ -#define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */ -#define DIR_CrtTime 14 /* Created time (DWORD) */ -#define DIR_LstAccDate 18 /* Last accessed date (WORD) */ -#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */ -#define DIR_ModTime 22 /* Modified time (DWORD) */ -#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */ -#define DIR_FileSize 28 /* File size (DWORD) */ -#define LDIR_Ord 0 /* LFN: LFN order and LLE flag (BYTE) */ -#define LDIR_Attr 11 /* LFN: LFN attribute (BYTE) */ -#define LDIR_Type 12 /* LFN: Entry type (BYTE) */ -#define LDIR_Chksum 13 /* LFN: Checksum of the SFN (BYTE) */ -#define LDIR_FstClusLO 26 /* LFN: MBZ field (WORD) */ -#define XDIR_Type 0 /* exFAT: Type of exFAT directory entry (BYTE) */ -#define XDIR_NumLabel 1 /* exFAT: Number of volume label characters (BYTE) */ -#define XDIR_Label 2 /* exFAT: Volume label (11-WORD) */ -#define XDIR_CaseSum 4 /* exFAT: Sum of case conversion table (DWORD) */ -#define XDIR_NumSec 1 /* exFAT: Number of secondary entries (BYTE) */ -#define XDIR_SetSum 2 /* exFAT: Sum of the set of directory entries (WORD) */ -#define XDIR_Attr 4 /* exFAT: File attribute (WORD) */ -#define XDIR_CrtTime 8 /* exFAT: Created time (DWORD) */ -#define XDIR_ModTime 12 /* exFAT: Modified time (DWORD) */ -#define XDIR_AccTime 16 /* exFAT: Last accessed time (DWORD) */ -#define XDIR_CrtTime10 20 /* exFAT: Created time subsecond (BYTE) */ -#define XDIR_ModTime10 21 /* exFAT: Modified time subsecond (BYTE) */ -#define XDIR_CrtTZ 22 /* exFAT: Created timezone (BYTE) */ -#define XDIR_ModTZ 23 /* exFAT: Modified timezone (BYTE) */ -#define XDIR_AccTZ 24 /* exFAT: Last accessed timezone (BYTE) */ -#define XDIR_GenFlags 33 /* exFAT: General secondary flags (BYTE) */ -#define XDIR_NumName 35 /* exFAT: Number of file name characters (BYTE) */ -#define XDIR_NameHash 36 /* exFAT: Hash of file name (WORD) */ -#define XDIR_ValidFileSize 40 /* exFAT: Valid file size (QWORD) */ -#define XDIR_FstClus 52 /* exFAT: First cluster of the file data (DWORD) */ -#define XDIR_FileSize 56 /* exFAT: File/Directory size (QWORD) */ - -#define SZDIRE 32 /* Size of a directory entry */ -#define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */ -#define RDDEM 0x05 /* Replacement of the character collides with DDEM */ -#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */ - -#define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */ -#define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */ -#define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */ -#define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */ - -#define MBR_Table 446 /* MBR: Offset of partition table in the MBR */ -#define SZ_PTE 16 /* MBR: Size of a partition table entry */ -#define PTE_Boot 0 /* MBR PTE: Boot indicator */ -#define PTE_StHead 1 /* MBR PTE: Start head */ -#define PTE_StSec 2 /* MBR PTE: Start sector */ -#define PTE_StCyl 3 /* MBR PTE: Start cylinder */ -#define PTE_System 4 /* MBR PTE: System ID */ -#define PTE_EdHead 5 /* MBR PTE: End head */ -#define PTE_EdSec 6 /* MBR PTE: End sector */ -#define PTE_EdCyl 7 /* MBR PTE: End cylinder */ -#define PTE_StLba 8 /* MBR PTE: Start in LBA */ -#define PTE_SizLba 12 /* MBR PTE: Size in LBA */ - - -/* Post process on fatal error in the file operations */ -#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); } - - -/* Re-entrancy related */ -#if FF_FS_REENTRANT -#if FF_USE_LFN == 1 -#error Static LFN work area cannot be used at thread-safe configuration -#endif -#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; } -#else -#define LEAVE_FF(fs, res) return res -#endif - - -/* Definitions of volume - physical location conversion */ -#if FF_MULTI_PARTITION -#define LD2PD(vol) VolToPart[vol].pd /* Get physical drive number */ -#define LD2PT(vol) VolToPart[vol].pt /* Get partition index */ -#else -#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */ -#define LD2PT(vol) 0 /* Find first valid partition or in SFD */ -#endif - - -/* Definitions of sector size */ -#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) -#error Wrong sector size configuration -#endif -#if FF_MAX_SS == FF_MIN_SS -#define SS(fs) ((UINT)FF_MAX_SS) /* Fixed sector size */ -#else -#define SS(fs) ((fs)->ssize) /* Variable sector size */ -#endif - - -/* Timestamp */ -#if FF_FS_NORTC == 1 -#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 -#error Invalid FF_FS_NORTC settings -#endif -#define GET_FATTIME() ((DWORD)(FF_NORTC_YEAR - 1980) << 25 | (DWORD)FF_NORTC_MON << 21 | (DWORD)FF_NORTC_MDAY << 16) -#else -#define GET_FATTIME() get_fattime() -#endif - - -/* File lock controls */ -#if FF_FS_LOCK != 0 -#if FF_FS_READONLY -#error FF_FS_LOCK must be 0 at read-only configuration -#endif -typedef struct { - FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */ - DWORD clu; /* Object ID 2, containing directory (0:root) */ - DWORD ofs; /* Object ID 3, offset in the directory */ - WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */ -} FILESEM; -#endif - - -/* SBCS up-case tables (\x80-\xFF) */ -#define TBL_CT437 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \ - 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT720 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT737 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \ - 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT771 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF} -#define TBL_CT775 {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \ - 0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ - 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT850 {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \ - 0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \ - 0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT852 {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \ - 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF} -#define TBL_CT855 {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \ - 0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \ - 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \ - 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \ - 0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT857 {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \ - 0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \ - 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT860 {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \ - 0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT861 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \ - 0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ - 0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT862 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT863 {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \ - 0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \ - 0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT864 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \ - 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT865 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \ - 0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ - 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT866 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ - 0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} -#define TBL_CT869 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \ - 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \ - 0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ - 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ - 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ - 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \ - 0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \ - 0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF} - - -/* DBCS code range |----- 1st byte -----| |----------- 2nd byte -----------| */ -#define TBL_DC932 {0x81, 0x9F, 0xE0, 0xFC, 0x40, 0x7E, 0x80, 0xFC, 0x00, 0x00} -#define TBL_DC936 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0x80, 0xFE, 0x00, 0x00} -#define TBL_DC949 {0x81, 0xFE, 0x00, 0x00, 0x41, 0x5A, 0x61, 0x7A, 0x81, 0xFE} -#define TBL_DC950 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0xA1, 0xFE, 0x00, 0x00} - - -/* Macros for table definitions */ -#define MERGE_2STR(a, b) a ## b -#define MKCVTBL(hd, cp) MERGE_2STR(hd, cp) - - - - -/*-------------------------------------------------------------------------- - - Module Private Work Area - ----------------------------------------------------------------------------*/ -/* Remark: Variables defined here without initial value shall be guaranteed -/ zero/null at start-up. If not, the linker option or start-up routine is -/ not compliance with C standard. */ - -/*--------------------------------*/ -/* File/Volume controls */ -/*--------------------------------*/ - -#if FF_VOLUMES < 1 || FF_VOLUMES > 10 -#error Wrong FF_VOLUMES setting -#endif -static FATFS *FatFs[FF_VOLUMES]; /* Pointer to the filesystem objects (logical drives) */ -static WORD Fsid; /* File system mount ID */ - -#if FF_FS_RPATH != 0 && FF_VOLUMES >= 2 -static BYTE CurrVol; /* Current drive */ -#endif - -#if FF_FS_LOCK != 0 -static FILESEM Files[FF_FS_LOCK]; /* Open object lock semaphores */ -#endif - - - -/*--------------------------------*/ -/* LFN/Directory working buffer */ -/*--------------------------------*/ - -#if FF_USE_LFN == 0 /* Non-LFN configuration */ -#if FF_FS_EXFAT -#error LFN must be enabled when enable exFAT -#endif -#define DEF_NAMBUF -#define INIT_NAMBUF(fs) -#define FREE_NAMBUF() -#define LEAVE_MKFS(res) return res - -#else /* LFN configurations */ -#if FF_MAX_LFN < 12 || FF_MAX_LFN > 255 -#error Wrong setting of FF_MAX_LFN -#endif -#if FF_LFN_BUF < 12 || FF_SFN_BUF < 12 || FF_LFN_BUF < FF_SFN_BUF -#error Wrong setting of FF_LFN_BUF or FF_SFN_BUF -#endif -#if FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 2 -#error Wrong setting of FF_LFN_UNICODE -#endif -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 */ -#define MAXDIRB(nc) ((nc + 44U) / 15 * SZDIRE) /* exFAT: Size of directory entry block scratchpad buffer needed for the name length */ - -#if FF_USE_LFN == 1 /* LFN enabled with static working buffer */ -#if FF_FS_EXFAT -static BYTE DirBuf[MAXDIRB(FF_MAX_LFN)]; /* Directory entry block scratchpad buffer */ -#endif -static WCHAR LfnBuf[FF_MAX_LFN + 1]; /* LFN working buffer */ -#define DEF_NAMBUF -#define INIT_NAMBUF(fs) -#define FREE_NAMBUF() -#define LEAVE_MKFS(res) return res - -#elif FF_USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */ -#if FF_FS_EXFAT -#define DEF_NAMBUF WCHAR lbuf[FF_MAX_LFN+1]; BYTE dbuf[MAXDIRB(FF_MAX_LFN)]; /* LFN working buffer and directory entry block scratchpad buffer */ -#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; } -#define FREE_NAMBUF() -#else -#define DEF_NAMBUF WCHAR lbuf[FF_MAX_LFN+1]; /* LFN working buffer */ -#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; } -#define FREE_NAMBUF() -#endif -#define LEAVE_MKFS(res) return res - -#elif FF_USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */ -#if FF_FS_EXFAT -#define DEF_NAMBUF WCHAR *lfn; /* Pointer to LFN working buffer and directory entry block scratchpad buffer */ -#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); } -#define FREE_NAMBUF() ff_memfree(lfn) -#else -#define DEF_NAMBUF WCHAR *lfn; /* Pointer to LFN working buffer */ -#define INIT_NAMBUF(fs) { lfn = ff_memalloc((FF_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; } -#define FREE_NAMBUF() ff_memfree(lfn) -#endif -#define LEAVE_MKFS(res) { if (!work) ff_memfree(buf); return res; } -#define MAX_MALLOC 0x8000 - -#else -#error Wrong setting of FF_USE_LFN - -#endif /* FF_USE_LFN == 1 */ -#endif /* FF_USE_LFN == 0 */ - - - -/*--------------------------------*/ -/* Code conversion tables */ -/*--------------------------------*/ - -#if FF_CODE_PAGE == 0 /* Run-time code page configuration */ -#define CODEPAGE CodePage -static WORD CodePage; /* Current code page */ -static const BYTE *ExCvt, *DbcTbl; /* Pointer to current SBCS up-case table and DBCS code range table below */ -static const BYTE Ct437[] = TBL_CT437; -static const BYTE Ct720[] = TBL_CT720; -static const BYTE Ct737[] = TBL_CT737; -static const BYTE Ct771[] = TBL_CT771; -static const BYTE Ct775[] = TBL_CT775; -static const BYTE Ct850[] = TBL_CT850; -static const BYTE Ct852[] = TBL_CT852; -static const BYTE Ct855[] = TBL_CT855; -static const BYTE Ct857[] = TBL_CT857; -static const BYTE Ct860[] = TBL_CT860; -static const BYTE Ct861[] = TBL_CT861; -static const BYTE Ct862[] = TBL_CT862; -static const BYTE Ct863[] = TBL_CT863; -static const BYTE Ct864[] = TBL_CT864; -static const BYTE Ct865[] = TBL_CT865; -static const BYTE Ct866[] = TBL_CT866; -static const BYTE Ct869[] = TBL_CT869; -static const BYTE Dc932[] = TBL_DC932; -static const BYTE Dc936[] = TBL_DC936; -static const BYTE Dc949[] = TBL_DC949; -static const BYTE Dc950[] = TBL_DC950; - -#elif FF_CODE_PAGE < 900 /* Static code page configuration (SBCS) */ -#define CODEPAGE FF_CODE_PAGE -static const BYTE ExCvt[] = MKCVTBL(TBL_CT, FF_CODE_PAGE); - -#else /* Static code page configuration (DBCS) */ -#define CODEPAGE FF_CODE_PAGE -static const BYTE DbcTbl[] = MKCVTBL(TBL_DC, FF_CODE_PAGE); - -#endif - - - - -/*-------------------------------------------------------------------------- - - Module Private Functions - ----------------------------------------------------------------------------*/ - - -/*-----------------------------------------------------------------------*/ -/* Load/Store multi-byte word in the FAT structure */ -/*-----------------------------------------------------------------------*/ - -static -WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */ { - WORD rv; - - rv = ptr[1]; - rv = rv << 8 | ptr[0]; - return rv; -} - -static -DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */ { - DWORD rv; - - rv = ptr[3]; - rv = rv << 8 | ptr[2]; - rv = rv << 8 | ptr[1]; - rv = rv << 8 | ptr[0]; - return rv; -} - -#if FF_FS_EXFAT -static -QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */ { - QWORD rv; - - rv = ptr[7]; - rv = rv << 8 | ptr[6]; - rv = rv << 8 | ptr[5]; - rv = rv << 8 | ptr[4]; - rv = rv << 8 | ptr[3]; - rv = rv << 8 | ptr[2]; - rv = rv << 8 | ptr[1]; - rv = rv << 8 | ptr[0]; - return rv; -} -#endif - -#if !FF_FS_READONLY -static -void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */ { - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; -} - -static -void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */ { - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; -} - -#if FF_FS_EXFAT -static -void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */ { - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; val >>= 8; - *ptr++ = (BYTE)val; -} -#endif -#endif /* !FF_FS_READONLY */ - - - -/*-----------------------------------------------------------------------*/ -/* String functions */ -/*-----------------------------------------------------------------------*/ - -/* Copy memory to memory */ -static -void mem_cpy (void* dst, const void* src, UINT cnt) { - BYTE *d = (BYTE*)dst; - const BYTE *s = (const BYTE*)src; - - if (cnt != 0) { - do { - *d++ = *s++; - } while (--cnt); - } -} - - -/* Fill memory block */ -static -void mem_set (void* dst, int val, UINT cnt) { - BYTE *d = (BYTE*)dst; - - do { - *d++ = (BYTE)val; - } while (--cnt); -} - - -/* Compare memory block */ -static -int mem_cmp (const void* dst, const void* src, UINT cnt) /* ZR:same, NZ:different */ { - const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; - int r = 0; - - do { - r = *d++ - *s++; - } while (--cnt && r == 0); - - return r; -} - - -/* Check if chr is contained in the string */ -static -int chk_chr (const char* str, int chr) /* NZ:contained, ZR:not contained */ { - while (*str && *str != chr) str++; - return *str; -} - - -/* Test if the character is DBC 1st byte */ -static -int dbc_1st (BYTE c) { -#if FF_CODE_PAGE == 0 /* Variable code page */ - if (DbcTbl && c >= DbcTbl[0]) { - if (c <= DbcTbl[1]) return 1; /* 1st byte range 1 */ - if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1; /* 1st byte range 2 */ - } -#elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */ - if (c >= DbcTbl[0]) { - if (c <= DbcTbl[1]) return 1; - if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1; - } -#else /* SBCS fixed code page */ - if (c != 0) return 0; /* Always false */ -#endif - return 0; -} - - -/* Test if the character is DBC 2nd byte */ -static -int dbc_2nd (BYTE c) { -#if FF_CODE_PAGE == 0 /* Variable code page */ - if (DbcTbl && c >= DbcTbl[4]) { - if (c <= DbcTbl[5]) return 1; /* 2nd byte range 1 */ - if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1; /* 2nd byte range 2 */ - if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1; /* 2nd byte range 3 */ - } -#elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */ - if (c >= DbcTbl[4]) { - if (c <= DbcTbl[5]) return 1; - if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1; - if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1; - } -#else /* SBCS fixed code page */ - if (c != 0) return 0; /* Always false */ -#endif - return 0; -} - - -#if FF_USE_LFN - -/* Get a character from TCHAR string in defined API encodeing */ -static -DWORD tchar2uni ( /* Returns character in UTF-16 encoding (>=0x10000 on double encoding unit, 0xFFFFFFFF on decode error) */ - const TCHAR** str /* Pointer to pointer to TCHAR string in configured encoding */ -) { - DWORD uc; - const TCHAR *p = *str; - -#if FF_LFN_UNICODE == 1 /* UTF-16 input */ - WCHAR wc; - - uc = *p++; - if (IsSurrogate(uc)) { /* Surrogate? */ - wc = *p++; /* Get low surrogate */ - if (!IsSurrogateH(uc) || !IsSurrogateL(wc)) return 0xFFFFFFFF; /* Wrong surrogate? */ - uc = uc << 16 | wc; - } - -#elif FF_LFN_UNICODE == 2 /* UTF-8 input */ - BYTE b; - int nf; - - uc = (BYTE)*p++; /* Get a byte */ - if (uc & 0x80) { /* Multiple byte code? */ - if ((uc & 0xE0) == 0xC0) { /* 2-byte sequence? */ - uc &= 0x1F; nf = 1; - } else { - if ((uc & 0xF0) == 0xE0) { /* 3-byte sequence? */ - uc &= 0x0F; nf = 2; - } else { - if ((uc & 0xF8) == 0xF0) { /* 4-byte sequence? */ - uc &= 0x07; nf = 3; - } else { /* Wrong sequence */ - return 0xFFFFFFFF; - } - } - } - do { /* Get trailing bytes */ - b = (BYTE)*p++; - if ((b & 0xC0) != 0x80) return 0xFFFFFFFF; /* Wrong sequence? */ - uc = uc << 6 | (b & 0x3F); - } while (--nf != 0); - if (uc < 0x80 || IsSurrogate(uc) || uc >= 0x110000) return 0xFFFFFFFF; /* Wrong code? */ - if (uc >= 0x10000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF); /* Make a surrogate pair if needed */ - } - -#else /* ANSI/OEM input */ - BYTE b; - WCHAR wc; - - wc = (BYTE)*p++; /* Get a byte */ - if (dbc_1st((BYTE)wc)) { /* Is it a DBC 1st byte? */ - b = (BYTE)*p++; /* Get 2nd byte */ - if (!dbc_2nd(b)) return 0xFFFFFFFF; /* Invalid code? */ - wc = (wc << 8) + b; /* Make a DBC */ - } - if (wc != 0) { - wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM ==> Unicode */ - if (wc == 0) return 0xFFFFFFFF; /* Invalid code? */ - } - uc = wc; - -#endif - *str = p; /* Next read pointer */ - return uc; -} - - -/* Output a TCHAR string in defined API encoding */ -static -BYTE put_utf ( /* Returns number of encoding units written (0:buffer overflow or wrong encoding) */ - DWORD chr, /* UTF-16 encoded character (Double encoding unit char if >=0x10000) */ - TCHAR* buf, /* Output buffer */ - UINT szb /* Size of the buffer */ -) { -#if FF_LFN_UNICODE == 1 /* UTF-16 output */ - WCHAR hs, wc; - - hs = (WCHAR)(chr >> 16); - wc = (WCHAR)chr; - if (hs == 0) { /* Single encoding unit? */ - if (szb < 1 || IsSurrogate(wc)) return 0; /* Buffer overflow or wrong code? */ - *buf = wc; - return 1; - } - if (szb < 2 || !IsSurrogateH(hs) || !IsSurrogateL(wc)) return 0; /* Buffer overflow or wrong surrogate? */ - *buf++ = hs; - *buf++ = wc; - return 2; - -#elif FF_LFN_UNICODE == 2 /* UTF-8 output */ - DWORD hc; - - if (chr < 0x80) { /* Single byte code? */ - if (szb < 1) return 0; /* Buffer overflow? */ - *buf = (TCHAR)chr; - return 1; - } - if (chr < 0x800) { /* 2-byte sequence? */ - if (szb < 2) return 0; /* Buffer overflow? */ - *buf++ = (TCHAR)(0xC0 | (chr >> 6 & 0x1F)); - *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F)); - return 2; - } - if (chr < 0x10000) { /* 3-byte sequence? */ - if (szb < 3 || IsSurrogate(chr)) return 0; /* Buffer overflow or wrong code? */ - *buf++ = (TCHAR)(0xE0 | (chr >> 12 & 0x0F)); - *buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F)); - *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F)); - return 3; - } - /* 4-byte sequence */ - if (szb < 4) return 0; /* Buffer overflow? */ - hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6; /* Get high 10 bits */ - chr = (chr & 0xFFFF) - 0xDC00; /* Get low 10 bits */ - if (hc >= 0x100000 || chr >= 0x400) return 0; /* Wrong surrogate? */ - chr = (hc | chr) + 0x10000; - *buf++ = (TCHAR)(0xF0 | (chr >> 18 & 0x07)); - *buf++ = (TCHAR)(0x80 | (chr >> 12 & 0x3F)); - *buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F)); - *buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F)); - return 4; - -#else /* ANSI/OEM output */ - WCHAR wc; - - wc = ff_uni2oem(chr, CODEPAGE); - if (wc >= 0x100) { /* Is this a DBC? */ - if (szb < 2) return 0; - *buf++ = (char)(wc >> 8); /* Store DBC 1st byte */ - *buf++ = (TCHAR)wc; /* Store DBC 2nd byte */ - return 2; - } - if (wc == 0 || szb < 1) return 0; /* Invalid char or buffer overflow? */ - *buf++ = (TCHAR)wc; /* Store the character */ - return 1; -#endif -} -#endif /* FF_USE_LFN */ - - -#if FF_FS_REENTRANT -/*-----------------------------------------------------------------------*/ -/* Request/Release grant to access the volume */ -/*-----------------------------------------------------------------------*/ -static -int lock_fs ( /* 1:Ok, 0:timeout */ - FATFS* fs /* Filesystem object */ -) { - return ff_req_grant(fs->sobj); -} - - -static -void unlock_fs ( - FATFS* fs, /* Filesystem object */ - FRESULT res /* Result code to be returned */ -) { - if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) { - ff_rel_grant(fs->sobj); - } -} - -#endif - - - -#if FF_FS_LOCK != 0 -/*-----------------------------------------------------------------------*/ -/* File lock control functions */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT chk_lock ( /* Check if the file can be accessed */ - DIR* dp, /* Directory object pointing the file to be checked */ - int acc /* Desired access type (0:Read mode open, 1:Write mode open, 2:Delete or rename) */ -) { - UINT i, be; - - /* Search open object table for the object */ - be = 0; - for (i = 0; i < FF_FS_LOCK; i++) { - if (Files[i].fs) { /* Existing entry */ - if (Files[i].fs == dp->obj.fs && /* Check if the object matches with an open object */ - Files[i].clu == dp->obj.sclust && - Files[i].ofs == dp->dptr) break; - } else { /* Blank entry */ - be = 1; - } - } - if (i == FF_FS_LOCK) { /* The object has not been opened */ - return (!be && acc != 2) ? FR_TOO_MANY_OPEN_FILES : FR_OK; /* Is there a blank entry for new object? */ - } - - /* The object was opened. Reject any open against writing file and all write mode open */ - return (acc != 0 || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK; -} - - -static -int enq_lock (void) /* Check if an entry is available for a new object */ { - UINT i; - - for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ; - return (i == FF_FS_LOCK) ? 0 : 1; -} - - -static -UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */ - DIR* dp, /* Directory object pointing the file to register or increment */ - int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ -) { - UINT i; - - - for (i = 0; i < FF_FS_LOCK; i++) { /* Find the object */ - if (Files[i].fs == dp->obj.fs && - Files[i].clu == dp->obj.sclust && - Files[i].ofs == dp->dptr) break; - } - - if (i == FF_FS_LOCK) { /* Not opened. Register it as new. */ - for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ; - if (i == FF_FS_LOCK) return 0; /* No free entry to register (int err) */ - Files[i].fs = dp->obj.fs; - Files[i].clu = dp->obj.sclust; - Files[i].ofs = dp->dptr; - Files[i].ctr = 0; - } - - if (acc >= 1 && Files[i].ctr) return 0; /* Access violation (int err) */ - - Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */ - - return i + 1; /* Index number origin from 1 */ -} - - -static -FRESULT dec_lock ( /* Decrement object open counter */ - UINT i /* Semaphore index (1..) */ -) { - WORD n; - FRESULT res; - - - if (--i < FF_FS_LOCK) { /* Index number origin from 0 */ - n = Files[i].ctr; - if (n == 0x100) n = 0; /* If write mode open, delete the entry */ - if (n > 0) n--; /* Decrement read mode open count */ - Files[i].ctr = n; - if (n == 0) Files[i].fs = 0; /* Delete the entry if open count gets zero */ - res = FR_OK; - } else { - res = FR_INT_ERR; /* Invalid index nunber */ - } - return res; -} - - -static -void clear_lock ( /* Clear lock entries of the volume */ - FATFS *fs -) { - UINT i; - - for (i = 0; i < FF_FS_LOCK; i++) { - if (Files[i].fs == fs) Files[i].fs = 0; - } -} - -#endif /* FF_FS_LOCK != 0 */ - - - -/*-----------------------------------------------------------------------*/ -/* Move/Flush disk access window in the filesystem object */ -/*-----------------------------------------------------------------------*/ -#if !FF_FS_READONLY -static -FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERR */ - FATFS* fs /* Filesystem object */ -) { - FRESULT res = FR_OK; - - - if (fs->wflag) { /* Is the disk access window dirty */ - if (disk_write(fs->pdrv, fs->win, fs->winsect, 1) == RES_OK) { /* Write back the window */ - fs->wflag = 0; /* Clear window dirty flag */ - if (fs->winsect - fs->fatbase < fs->fsize) { /* Is it in the 1st FAT? */ - if (fs->n_fats == 2) disk_write(fs->pdrv, fs->win, fs->winsect + fs->fsize, 1); /* Reflect it to 2nd FAT if needed */ - } - } else { - res = FR_DISK_ERR; - } - } - return res; -} -#endif - - -static -FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERR */ - FATFS* fs, /* Filesystem object */ - DWORD sector /* Sector number to make appearance in the fs->win[] */ -) { - FRESULT res = FR_OK; - - - if (sector != fs->winsect) { /* Window offset changed? */ -#if !FF_FS_READONLY - res = sync_window(fs); /* Write-back changes */ -#endif - if (res == FR_OK) { /* Fill sector window with new data */ - if (disk_read(fs->pdrv, fs->win, sector, 1) != RES_OK) { - sector = 0xFFFFFFFF; /* Invalidate window if read data is not valid */ - res = FR_DISK_ERR; - } - fs->winsect = sector; - } - } - return res; -} - - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Synchronize filesystem and data on the storage */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT sync_fs ( /* Returns FR_OK or FR_DISK_ERR */ - FATFS* fs /* Filesystem object */ -) { - FRESULT res; - - - res = sync_window(fs); - if (res == FR_OK) { - if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) { /* FAT32: Update FSInfo sector if needed */ - /* Create FSInfo structure */ - mem_set(fs->win, 0, SS(fs)); - st_word(fs->win + BS_55AA, 0xAA55); - st_dword(fs->win + FSI_LeadSig, 0x41615252); - st_dword(fs->win + FSI_StrucSig, 0x61417272); - st_dword(fs->win + FSI_Free_Count, fs->free_clst); - st_dword(fs->win + FSI_Nxt_Free, fs->last_clst); - /* Write it into the FSInfo sector */ - fs->winsect = fs->volbase + 1; - disk_write(fs->pdrv, fs->win, fs->winsect, 1); - fs->fsi_flag = 0; - } - /* Make sure that no pending write process in the lower layer */ - if (disk_ioctl(fs->pdrv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR; - } - - return res; -} - -#endif - - - -/*-----------------------------------------------------------------------*/ -/* Get physical sector number from cluster number */ -/*-----------------------------------------------------------------------*/ - -static -DWORD clst2sect ( /* !=0:Sector number, 0:Failed (invalid cluster#) */ - FATFS* fs, /* Filesystem object */ - DWORD clst /* Cluster# to be converted */ -) { - clst -= 2; /* Cluster number is origin from 2 */ - if (clst >= fs->n_fatent - 2) return 0; /* Is it invalid cluster number? */ - return fs->database + fs->csize * clst; /* Start sector number of the cluster */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* FAT access - Read value of a FAT entry */ -/*-----------------------------------------------------------------------*/ - -static -DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */ - FFOBJID* obj, /* Corresponding object */ - DWORD clst /* Cluster number to get the value */ -) { - UINT wc, bc; - DWORD val; - FATFS *fs = obj->fs; - - - if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */ - val = 1; /* Internal error */ - - } else { - val = 0xFFFFFFFF; /* Default value falls on disk error */ - - switch (fs->fs_type) { - case FS_FAT12 : - bc = (UINT)clst; bc += bc / 2; - if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break; - wc = fs->win[bc++ % SS(fs)]; /* Get 1st byte of the entry */ - if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break; - wc |= fs->win[bc % SS(fs)] << 8; /* Merge 2nd byte of the entry */ - val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF); /* Adjust bit position */ - break; - - case FS_FAT16 : - if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break; - val = ld_word(fs->win + clst * 2 % SS(fs)); /* Simple WORD array */ - break; - - case FS_FAT32 : - if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break; - val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF; /* Simple DWORD array but mask out upper 4 bits */ - break; -#if FF_FS_EXFAT - case FS_EXFAT : - if (obj->objsize != 0) { - DWORD cofs = clst - obj->sclust; /* Offset from start cluster */ - DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize; /* Number of clusters - 1 */ - - if (obj->stat == 2 && cofs <= clen) { /* Is it a contiguous chain? */ - val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* No data on the FAT, generate the value */ - break; - } - if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the 1st fragment? */ - val = clst + 1; /* Generate the value */ - break; - } - if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */ - if (obj->n_frag != 0) { /* Is it on the growing edge? */ - val = 0x7FFFFFFF; /* Generate EOC */ - } else { - if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break; - val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF; - } - break; - } - } - /* go to default */ -#endif - default: - val = 1; /* Internal error */ - } - } - - return val; -} - - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* FAT access - Change value of a FAT entry */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */ - FATFS* fs, /* Corresponding filesystem object */ - DWORD clst, /* FAT index number (cluster number) to be changed */ - DWORD val /* New value to be set to the entry */ -) { - UINT bc; - BYTE *p; - FRESULT res = FR_INT_ERR; - - - if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */ - switch (fs->fs_type) { - case FS_FAT12 : - bc = (UINT)clst; bc += bc / 2; /* bc: byte offset of the entry */ - res = move_window(fs, fs->fatbase + (bc / SS(fs))); - if (res != FR_OK) break; - p = fs->win + bc++ % SS(fs); - *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; /* Put 1st byte */ - fs->wflag = 1; - res = move_window(fs, fs->fatbase + (bc / SS(fs))); - if (res != FR_OK) break; - p = fs->win + bc % SS(fs); - *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); /* Put 2nd byte */ - fs->wflag = 1; - break; - - case FS_FAT16 : - res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); - if (res != FR_OK) break; - st_word(fs->win + clst * 2 % SS(fs), (WORD)val); /* Simple WORD array */ - fs->wflag = 1; - break; - - case FS_FAT32 : -#if FF_FS_EXFAT - case FS_EXFAT : -#endif - res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); - if (res != FR_OK) break; - if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { - val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000); - } - st_dword(fs->win + clst * 4 % SS(fs), val); - fs->wflag = 1; - break; - } - } - return res; -} - -#endif /* !FF_FS_READONLY */ - - - - -#if FF_FS_EXFAT && !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* exFAT: Accessing FAT and Allocation Bitmap */ -/*-----------------------------------------------------------------------*/ - -/*--------------------------------------*/ -/* Find a contiguous free cluster block */ -/*--------------------------------------*/ - -static -DWORD find_bitmap ( /* 0:Not found, 2..:Cluster block found, 0xFFFFFFFF:Disk error */ - FATFS* fs, /* Filesystem object */ - DWORD clst, /* Cluster number to scan from */ - DWORD ncl /* Number of contiguous clusters to find (1..) */ -) { - BYTE bm, bv; - UINT i; - DWORD val, scl, ctr; - - - clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */ - if (clst >= fs->n_fatent - 2) clst = 0; - scl = val = clst; ctr = 0; - for (;;) { - if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF; /* (assuming bitmap is located top of the cluster heap) */ - i = val / 8 % SS(fs); bm = 1 << (val % 8); - do { - do { - bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */ - if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */ - val = 0; bm = 0; i = SS(fs); - } - if (bv == 0) { /* Is it a free cluster? */ - if (++ctr == ncl) return scl + 2; /* Check if run length is sufficient for required */ - } else { - scl = val; ctr = 0; /* Encountered a cluster in-use, restart to scan */ - } - if (val == clst) return 0; /* All cluster scanned? */ - } while (bm != 0); - bm = 1; - } while (++i < SS(fs)); - } -} - - -/*----------------------------------------*/ -/* Set/Clear a block of allocation bitmap */ -/*----------------------------------------*/ - -static -FRESULT change_bitmap ( - FATFS* fs, /* Filesystem object */ - DWORD clst, /* Cluster number to change from */ - DWORD ncl, /* Number of clusters to be changed */ - int bv /* bit value to be set (0 or 1) */ -) { - BYTE bm; - UINT i; - DWORD sect; - - - clst -= 2; /* The first bit corresponds to cluster #2 */ - sect = fs->database + clst / 8 / SS(fs); /* Sector address (assuming bitmap is located top of the cluster heap) */ - i = clst / 8 % SS(fs); /* Byte offset in the sector */ - bm = 1 << (clst % 8); /* Bit mask in the byte */ - for (;;) { - if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR; - do { - do { - if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */ - fs->win[i] ^= bm; /* Flip the bit */ - fs->wflag = 1; - if (--ncl == 0) return FR_OK; /* All bits processed? */ - } while (bm <<= 1); /* Next bit */ - bm = 1; - } while (++i < SS(fs)); /* Next byte */ - i = 0; - } -} - - -/*---------------------------------------------*/ -/* Fill the first fragment of the FAT chain */ -/*---------------------------------------------*/ - -static -FRESULT fill_first_frag ( - FFOBJID* obj /* Pointer to the corresponding object */ -) { - FRESULT res; - DWORD cl, n; - - - if (obj->stat == 3) { /* Has the object been changed 'fragmented' in this session? */ - for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */ - res = put_fat(obj->fs, cl, cl + 1); - if (res != FR_OK) return res; - } - obj->stat = 0; /* Change status 'FAT chain is valid' */ - } - return FR_OK; -} - - -/*---------------------------------------------*/ -/* Fill the last fragment of the FAT chain */ -/*---------------------------------------------*/ - -static -FRESULT fill_last_frag ( - FFOBJID* obj, /* Pointer to the corresponding object */ - DWORD lcl, /* Last cluster of the fragment */ - DWORD term /* Value to set the last FAT entry */ -) { - FRESULT res; - - - while (obj->n_frag > 0) { /* Create the chain of last fragment */ - res = put_fat(obj->fs, lcl - obj->n_frag + 1, (obj->n_frag > 1) ? lcl - obj->n_frag + 2 : term); - if (res != FR_OK) return res; - obj->n_frag--; - } - return FR_OK; -} - -#endif /* FF_FS_EXFAT && !FF_FS_READONLY */ - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* FAT handling - Remove a cluster chain */ -/*-----------------------------------------------------------------------*/ -static -FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */ - FFOBJID* obj, /* Corresponding object */ - DWORD clst, /* Cluster to remove a chain from */ - DWORD pclst /* Previous cluster of clst (0:entire chain) */ -) { - FRESULT res = FR_OK; - DWORD nxt; - FATFS *fs = obj->fs; -#if FF_FS_EXFAT || FF_USE_TRIM - DWORD scl = clst, ecl = clst; -#endif -#if FF_USE_TRIM - DWORD rt[2]; -#endif - - if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */ - - /* Mark the previous cluster 'EOC' on the FAT if it exists */ - if (pclst != 0 && (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) { - res = put_fat(fs, pclst, 0xFFFFFFFF); - if (res != FR_OK) return res; - } - - /* Remove the chain */ - do { - nxt = get_fat(obj, clst); /* Get cluster status */ - if (nxt == 0) break; /* Empty cluster? */ - if (nxt == 1) return FR_INT_ERR; /* Internal error? */ - if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */ - if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { - res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */ - if (res != FR_OK) return res; - } - if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */ - fs->free_clst++; - fs->fsi_flag |= 1; - } -#if FF_FS_EXFAT || FF_USE_TRIM - if (ecl + 1 == nxt) { /* Is next cluster contiguous? */ - ecl = nxt; - } else { /* End of contiguous cluster block */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */ - if (res != FR_OK) return res; - } -#endif -#if FF_USE_TRIM - rt[0] = clst2sect(fs, scl); /* Start of data area freed */ - rt[1] = clst2sect(fs, ecl) + fs->csize - 1; /* End of data area freed */ - disk_ioctl(fs->pdrv, CTRL_TRIM, rt); /* Inform device the data in the block is no longer needed */ -#endif - scl = ecl = nxt; - } -#endif - clst = nxt; /* Next cluster */ - } while (clst < fs->n_fatent); /* Repeat while not the last link */ - -#if FF_FS_EXFAT - /* Some post processes for chain status */ - if (fs->fs_type == FS_EXFAT) { - if (pclst == 0) { /* Has the entire chain been removed? */ - obj->stat = 0; /* Change the chain status 'initial' */ - } else { - if (obj->stat == 0) { /* Is it a fragmented chain from the beginning of this session? */ - clst = obj->sclust; /* Follow the chain to check if it gets contiguous */ - while (clst != pclst) { - nxt = get_fat(obj, clst); - if (nxt < 2) return FR_INT_ERR; - if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; - if (nxt != clst + 1) break; /* Not contiguous? */ - clst++; - } - if (clst == pclst) { /* Has the chain got contiguous again? */ - obj->stat = 2; /* Change the chain status 'contiguous' */ - } - } else { - if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Was the chain fragmented in this session and got contiguous again? */ - obj->stat = 2; /* Change the chain status 'contiguous' */ - } - } - } - } -#endif - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* FAT handling - Stretch a chain or Create a new chain */ -/*-----------------------------------------------------------------------*/ -static -DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ - FFOBJID* obj, /* Corresponding object */ - DWORD clst /* Cluster# to stretch, 0:Create a new chain */ -) { - DWORD cs, ncl, scl; - FRESULT res; - FATFS *fs = obj->fs; - - - if (clst == 0) { /* Create a new chain */ - scl = fs->last_clst; /* Suggested cluster to start to find */ - if (scl == 0 || scl >= fs->n_fatent) scl = 1; - } - else { /* Stretch a chain */ - cs = get_fat(obj, clst); /* Check the cluster status */ - if (cs < 2) return 1; /* Test for insanity */ - if (cs == 0xFFFFFFFF) return cs; /* Test for disk error */ - if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */ - scl = clst; /* Cluster to start to find */ - } - if (fs->free_clst == 0) return 0; /* No free cluster */ - -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */ - if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */ - res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */ - if (res == FR_INT_ERR) return 1; - if (res == FR_DISK_ERR) return 0xFFFFFFFF; - if (clst == 0) { /* Is it a new chain? */ - obj->stat = 2; /* Set status 'contiguous' */ - } else { /* It is a stretched chain */ - if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */ - obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */ - obj->stat = 3; /* Change status 'just fragmented' */ - } - } - if (obj->stat != 2) { /* Is the file non-contiguous? */ - if (ncl == clst + 1) { /* Is the cluster next to previous one? */ - obj->n_frag = obj->n_frag ? obj->n_frag + 1 : 2; /* Increment size of last framgent */ - } else { /* New fragment */ - if (obj->n_frag == 0) obj->n_frag = 1; - res = fill_last_frag(obj, clst, ncl); /* Fill last fragment on the FAT and link it to new one */ - if (res == FR_OK) obj->n_frag = 1; - } - } - } else -#endif - { /* On the FAT/FAT32 volume */ - ncl = 0; - if (scl == clst) { /* Stretching an existing chain? */ - ncl = scl + 1; /* Test if next cluster is free */ - if (ncl >= fs->n_fatent) ncl = 2; - cs = get_fat(obj, ncl); /* Get next cluster status */ - if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* Test for error */ - if (cs != 0) { /* Not free? */ - cs = fs->last_clst; /* Start at suggested cluster if it is valid */ - if (cs >= 2 && cs < fs->n_fatent) scl = cs; - ncl = 0; - } - } - if (ncl == 0) { /* The new cluster cannot be contiguous and find another fragment */ - ncl = scl; /* Start cluster */ - for (;;) { - ncl++; /* Next cluster */ - if (ncl >= fs->n_fatent) { /* Check wrap-around */ - ncl = 2; - if (ncl > scl) return 0; /* No free cluster found? */ - } - cs = get_fat(obj, ncl); /* Get the cluster status */ - if (cs == 0) break; /* Found a free cluster? */ - if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* Test for error */ - if (ncl == scl) return 0; /* No free cluster found? */ - } - } - res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */ - if (res == FR_OK && clst != 0) { - res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */ - } - } - - if (res == FR_OK) { /* Update FSINFO if function succeeded. */ - fs->last_clst = ncl; - if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--; - fs->fsi_flag |= 1; - } else { - ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Generate error status */ - } - - return ncl; /* Return new cluster number or error status */ -} - -#endif /* !FF_FS_READONLY */ - - - - -#if FF_USE_FASTSEEK -/*-----------------------------------------------------------------------*/ -/* FAT handling - Convert offset into cluster with link map table */ -/*-----------------------------------------------------------------------*/ - -static -DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */ - FIL* fp, /* Pointer to the file object */ - FSIZE_t ofs /* File offset to be converted to cluster# */ -) { - DWORD cl, ncl, *tbl; - FATFS *fs = fp->obj.fs; - - - tbl = fp->cltbl + 1; /* Top of CLMT */ - cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */ - for (;;) { - ncl = *tbl++; /* Number of cluters in the fragment */ - if (ncl == 0) return 0; /* End of table? (error) */ - if (cl < ncl) break; /* In this fragment? */ - cl -= ncl; tbl++; /* Next fragment */ - } - return cl + *tbl; /* Return the cluster number */ -} - -#endif /* FF_USE_FASTSEEK */ - - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Fill a cluster with zeros */ -/*-----------------------------------------------------------------------*/ - -#if !FF_FS_READONLY -static -FRESULT dir_clear ( /* Returns FR_OK or FR_DISK_ERR */ - FATFS *fs, /* Filesystem object */ - DWORD clst /* Directory table to clear */ -) { - DWORD sect; - UINT n, szb; - BYTE *ibuf; - - - if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */ - sect = clst2sect(fs, clst); /* Top of the cluster */ - fs->winsect = sect; /* Set window to top of the cluster */ - mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */ -#if FF_USE_LFN == 3 /* Quick table clear by using multi-secter write */ - /* Allocate a temporary buffer */ - for (szb = ((DWORD)fs->csize * SS(fs) >= MAX_MALLOC) ? MAX_MALLOC : fs->csize * SS(fs); szb > SS(fs) && !(ibuf = ff_memalloc(szb)); szb /= 2) ; - if (szb > SS(fs)) { /* Buffer allocated? */ - mem_set(ibuf, 0, szb); - szb /= SS(fs); /* Bytes -> Sectors */ - for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ; /* Fill the cluster with 0 */ - ff_memfree(ibuf); - } else -#endif - { - ibuf = fs->win; szb = 1; /* Use window buffer (single-sector writes may take a time) */ - for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ; /* Fill the cluster with 0 */ - } - return (n == fs->csize) ? FR_OK : FR_DISK_ERR; -} -#endif /* !FF_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Set directory index */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */ - DIR* dp, /* Pointer to directory object */ - DWORD ofs /* Offset of directory table */ -) { - DWORD csz, clst; - FATFS *fs = dp->obj.fs; - - - if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */ - return FR_INT_ERR; - } - dp->dptr = ofs; /* Set current offset */ - clst = dp->obj.sclust; /* Table start cluster (0:root) */ - if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */ - clst = fs->dirbase; - if (FF_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */ - } - - if (clst == 0) { /* Static table (root-directory on the FAT volume) */ - if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */ - dp->sect = fs->dirbase; - - } else { /* Dynamic table (sub-directory or root-directory on the FAT32/exFAT volume) */ - csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */ - while (ofs >= csz) { /* Follow cluster chain */ - clst = get_fat(&dp->obj, clst); /* Get next cluster */ - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ - if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */ - ofs -= csz; - } - dp->sect = clst2sect(fs, clst); - } - dp->clust = clst; /* Current cluster# */ - if (dp->sect == 0) return FR_INT_ERR; - dp->sect += ofs / SS(fs); /* Sector# of the directory entry */ - dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */ - - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Move directory table index next */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */ - DIR* dp, /* Pointer to the directory object */ - int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ -) { - DWORD ofs, clst; - FATFS *fs = dp->obj.fs; - - - ofs = dp->dptr + SZDIRE; /* Next entry */ - if (dp->sect == 0 || ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE; /* Report EOT when offset has reached max value */ - - if (ofs % SS(fs) == 0) { /* Sector changed? */ - dp->sect++; /* Next sector */ - - if (dp->clust == 0) { /* Static table */ - if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */ - dp->sect = 0; return FR_NO_FILE; - } - } - else { /* Dynamic table */ - if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */ - clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */ - if (clst <= 1) return FR_INT_ERR; /* Internal error */ - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ - if (clst >= fs->n_fatent) { /* It reached end of dynamic table */ -#if !FF_FS_READONLY - if (!stretch) { /* If no stretch, report EOT */ - dp->sect = 0; return FR_NO_FILE; - } - clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */ - if (clst == 0) return FR_DENIED; /* No free cluster */ - if (clst == 1) return FR_INT_ERR; /* Internal error */ - if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ - if (dir_clear(fs, clst) != FR_OK) return FR_DISK_ERR; /* Clean up the stretched table */ - if (FF_FS_EXFAT) dp->obj.stat |= 4; /* exFAT: The directory has been stretched */ -#else - if (!stretch) dp->sect = 0; /* (this line is to suppress compiler warning) */ - dp->sect = 0; return FR_NO_FILE; /* Report EOT */ -#endif - } - dp->clust = clst; /* Initialize data for new cluster */ - dp->sect = clst2sect(fs, clst); - } - } - } - dp->dptr = ofs; /* Current entry */ - dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */ - - return FR_OK; -} - - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Directory handling - Reserve a block of directory entries */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */ - DIR* dp, /* Pointer to the directory object */ - UINT nent /* Number of contiguous entries to allocate */ -) { - FRESULT res; - UINT n; - FATFS *fs = dp->obj.fs; - - - res = dir_sdi(dp, 0); - if (res == FR_OK) { - n = 0; - do { - res = move_window(fs, dp->sect); - if (res != FR_OK) break; -#if FF_FS_EXFAT - if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) { -#else - if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) { -#endif - if (++n == nent) break; /* A block of contiguous free entries is found */ - } else { - n = 0; /* Not a blank entry. Restart to search */ - } - res = dir_next(dp, 1); - } while (res == FR_OK); /* Next entry with table stretch enabled */ - } - - if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */ - return res; -} - -#endif /* !FF_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* FAT: Directory handling - Load/Store start cluster number */ -/*-----------------------------------------------------------------------*/ - -static -DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */ - FATFS* fs, /* Pointer to the fs object */ - const BYTE* dir /* Pointer to the key entry */ -) { - DWORD cl; - - cl = ld_word(dir + DIR_FstClusLO); - if (fs->fs_type == FS_FAT32) { - cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16; - } - - return cl; -} - - -#if !FF_FS_READONLY -static -void st_clust ( - FATFS* fs, /* Pointer to the fs object */ - BYTE* dir, /* Pointer to the key entry */ - DWORD cl /* Value to be set */ -) { - st_word(dir + DIR_FstClusLO, (WORD)cl); - if (fs->fs_type == FS_FAT32) { - st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16)); - } -} -#endif - - - -#if FF_USE_LFN -/*--------------------------------------------------------*/ -/* FAT-LFN: Compare a part of file name with an LFN entry */ -/*--------------------------------------------------------*/ -static -int cmp_lfn ( /* 1:matched, 0:not matched */ - const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */ - BYTE* dir /* Pointer to the directory entry containing the part of LFN */ -) { - UINT i, s; - WCHAR wc, uc; - - - if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */ - - i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ - - for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */ - uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */ - if (wc != 0) { - if (i >= FF_MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */ - return 0; /* Not matched */ - } - wc = uc; - } else { - if (uc != 0xFFFF) return 0; /* Check filler */ - } - } - - if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0; /* Last segment matched but different length */ - - return 1; /* The part of LFN matched */ -} - - -#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT -/*-----------------------------------------------------*/ -/* FAT-LFN: Pick a part of file name from an LFN entry */ -/*-----------------------------------------------------*/ -static -int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */ - WCHAR* lfnbuf, /* Pointer to the LFN working buffer */ - BYTE* dir /* Pointer to the LFN entry */ -) { - UINT i, s; - WCHAR wc, uc; - - - if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO is 0 */ - - i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13; /* Offset in the LFN buffer */ - - for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */ - uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */ - if (wc != 0) { - if (i >= FF_MAX_LFN) return 0; /* Buffer overflow? */ - lfnbuf[i++] = wc = uc; /* Store it */ - } else { - if (uc != 0xFFFF) return 0; /* Check filler */ - } - } - - if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */ - if (i >= FF_MAX_LFN) return 0; /* Buffer overflow? */ - lfnbuf[i] = 0; - } - - return 1; /* The part of LFN is valid */ -} -#endif - - -#if !FF_FS_READONLY -/*-----------------------------------------*/ -/* FAT-LFN: Create an entry of LFN entries */ -/*-----------------------------------------*/ -static -void put_lfn ( - const WCHAR* lfn, /* Pointer to the LFN */ - BYTE* dir, /* Pointer to the LFN entry to be created */ - BYTE ord, /* LFN order (1-20) */ - BYTE sum /* Checksum of the corresponding SFN */ -) { - UINT i, s; - WCHAR wc; - - - dir[LDIR_Chksum] = sum; /* Set checksum */ - dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ - dir[LDIR_Type] = 0; - st_word(dir + LDIR_FstClusLO, 0); - - i = (ord - 1) * 13; /* Get offset in the LFN working buffer */ - s = wc = 0; - do { - if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */ - st_word(dir + LfnOfs[s], wc); /* Put it */ - if (wc == 0) wc = 0xFFFF; /* Padding characters for left locations */ - } while (++s < 13); - if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */ - dir[LDIR_Ord] = ord; /* Set the LFN order */ -} - -#endif /* !FF_FS_READONLY */ -#endif /* FF_USE_LFN */ - - - -#if FF_USE_LFN && !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* FAT-LFN: Create a Numbered SFN */ -/*-----------------------------------------------------------------------*/ - -static -void gen_numname ( - BYTE* dst, /* Pointer to the buffer to store numbered SFN */ - const BYTE* src, /* Pointer to SFN */ - const WCHAR* lfn, /* Pointer to LFN */ - UINT seq /* Sequence number */ -) { - BYTE ns[8], c; - UINT i, j; - WCHAR wc; - DWORD sr; - - - mem_cpy(dst, src, 11); - - if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */ - sr = seq; - while (*lfn) { /* Create a CRC */ - wc = *lfn++; - for (i = 0; i < 16; i++) { - sr = (sr << 1) + (wc & 1); - wc >>= 1; - if (sr & 0x10000) sr ^= 0x11021; - } - } - seq = (UINT)sr; - } - - /* itoa (hexdecimal) */ - i = 7; - do { - c = (BYTE)((seq % 16) + '0'); - if (c > '9') c += 7; - ns[i--] = c; - seq /= 16; - } while (seq); - ns[i] = '~'; - - /* Append the number to the SFN body */ - for (j = 0; j < i && dst[j] != ' '; j++) { - if (dbc_1st(dst[j])) { - if (j == i - 1) break; - j++; - } - } - do { - dst[j++] = (i < 8) ? ns[i++] : ' '; - } while (j < 8); -} -#endif /* FF_USE_LFN && !FF_FS_READONLY */ - - - -#if FF_USE_LFN -/*-----------------------------------------------------------------------*/ -/* FAT-LFN: Calculate checksum of an SFN entry */ -/*-----------------------------------------------------------------------*/ - -static -BYTE sum_sfn ( - const BYTE* dir /* Pointer to the SFN entry */ -) { - BYTE sum = 0; - UINT n = 11; - - do { - sum = (sum >> 1) + (sum << 7) + *dir++; - } while (--n); - return sum; -} - -#endif /* FF_USE_LFN */ - - - -#if FF_FS_EXFAT -/*-----------------------------------------------------------------------*/ -/* exFAT: Checksum */ -/*-----------------------------------------------------------------------*/ - -static -WORD xdir_sum ( /* Get checksum of the directoly entry block */ - const BYTE* dir /* Directory entry block to be calculated */ -) { - UINT i, szblk; - WORD sum; - - - szblk = (dir[XDIR_NumSec] + 1) * SZDIRE; - for (i = sum = 0; i < szblk; i++) { - if (i == XDIR_SetSum) { /* Skip sum field */ - i++; - } else { - sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i]; - } - } - return sum; -} - - - -static -WORD xname_sum ( /* Get check sum (to be used as hash) of the name */ - const WCHAR* name /* File name to be calculated */ -) { - WCHAR chr; - WORD sum = 0; - - - while ((chr = *name++) != 0) { - chr = (WCHAR)ff_wtoupper(chr); /* File name needs to be upper-case converted */ - sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF); - sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8); - } - return sum; -} - - -#if !FF_FS_READONLY && FF_USE_MKFS -static -DWORD xsum32 ( - BYTE dat, /* Byte to be calculated */ - DWORD sum /* Previous sum */ -) { - sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat; - return sum; -} -#endif - - -#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 -/*------------------------------------------------------*/ -/* exFAT: Get object information from a directory block */ -/*------------------------------------------------------*/ - -static -void get_xfileinfo ( - BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */ - FILINFO* fno /* Buffer to store the extracted file information */ -) { - WCHAR wc, hs; - UINT di, si, nc; - - /* Get file name from the entry block */ - si = SZDIRE * 2; /* 1st C1 entry */ - nc = hs = di = 0; - while (nc < dirb[XDIR_NumName]) { - if (si >= MAXDIRB(FF_MAX_LFN)) { di = 0; break; } /* Truncated directory block? */ - if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */ - wc = ld_word(dirb + si); si += 2; nc++; /* Get a character */ - if (hs == 0 && IsSurrogate(wc)) { /* Is it a surrogate? */ - hs = wc; continue; /* Get low surrogate */ - } - wc = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di); /* Store it in UTF-16 or UTF-8 encoding */ - if (wc == 0) { di = 0; break; } /* Buffer overflow or wrong encoding? */ - di += wc; - hs = 0; - } - if (hs != 0) di = 0; /* Broken surrogate pair? */ - if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object name? */ - fno->fname[di] = 0; /* Terminate the name */ - fno->altname[0] = 0; /* exFAT does not have SFN */ - - fno->fattrib = dirb[XDIR_Attr]; /* Attribute */ - fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */ - fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */ - fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */ -} - -#endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */ - - -/*-----------------------------------*/ -/* exFAT: Get a directry entry block */ -/*-----------------------------------*/ - -static -FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */ - DIR* dp /* Reading direcotry object pointing top of the entry block to load */ -) { - FRESULT res; - UINT i, sz_ent; - BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */ - - - /* Load 85 entry */ - res = move_window(dp->obj.fs, dp->sect); - if (res != FR_OK) return res; - if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR; /* Invalid order */ - mem_cpy(dirb + 0 * SZDIRE, dp->dir, SZDIRE); - sz_ent = (dirb[XDIR_NumSec] + 1) * SZDIRE; - if (sz_ent < 3 * SZDIRE || sz_ent > 19 * SZDIRE) return FR_INT_ERR; - - /* Load C0 entry */ - res = dir_next(dp, 0); - if (res == FR_NO_FILE) res = FR_INT_ERR; /* It cannot be */ - if (res != FR_OK) return res; - res = move_window(dp->obj.fs, dp->sect); - if (res != FR_OK) return res; - if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR; /* Invalid order */ - mem_cpy(dirb + 1 * SZDIRE, dp->dir, SZDIRE); - if (MAXDIRB(dirb[XDIR_NumName]) > sz_ent) return FR_INT_ERR; - - /* Load C1 entries */ - i = 2 * SZDIRE; /* C1 offset to load */ - do { - res = dir_next(dp, 0); - if (res == FR_NO_FILE) res = FR_INT_ERR; /* It cannot be */ - if (res != FR_OK) return res; - res = move_window(dp->obj.fs, dp->sect); - if (res != FR_OK) return res; - if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR; /* Invalid order */ - if (i < MAXDIRB(FF_MAX_LFN)) mem_cpy(dirb + i, dp->dir, SZDIRE); - } while ((i += SZDIRE) < sz_ent); - - /* Sanity check (do it for only accessible object) */ - if (i <= MAXDIRB(FF_MAX_LFN)) { - if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR; - } - return FR_OK; -} - - -/*------------------------------------------------------------------*/ -/* exFAT: Initialize object allocation info with loaded entry block */ -/*------------------------------------------------------------------*/ - -static -void init_alloc_info ( - FATFS* fs, /* Filesystem object */ - FFOBJID* obj /* Object allocation information to be initialized */ -) { - obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Start cluster */ - obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize); /* Size */ - obj->stat = fs->dirbuf[XDIR_GenFlags] & 2; /* Allocation status */ - obj->n_frag = 0; /* No last fragment info */ -} - - - -#if !FF_FS_READONLY || FF_FS_RPATH != 0 -/*------------------------------------------------*/ -/* exFAT: Load the object's directory entry block */ -/*------------------------------------------------*/ -static -FRESULT load_obj_xdir ( - DIR* dp, /* Blank directory object to be used to access containing direcotry */ - const FFOBJID* obj /* Object with its containing directory information */ -) { - FRESULT res; - - /* Open object containing directory */ - dp->obj.fs = obj->fs; - dp->obj.sclust = obj->c_scl; - dp->obj.stat = (BYTE)obj->c_size; - dp->obj.objsize = obj->c_size & 0xFFFFFF00; - dp->obj.n_frag = 0; - dp->blk_ofs = obj->c_ofs; - - res = dir_sdi(dp, dp->blk_ofs); /* Goto object's entry block */ - if (res == FR_OK) { - res = load_xdir(dp); /* Load the object's entry block */ - } - return res; -} -#endif - - -#if !FF_FS_READONLY -/*----------------------------------------*/ -/* exFAT: Store the directory entry block */ -/*----------------------------------------*/ -static -FRESULT store_xdir ( - DIR* dp /* Pointer to the direcotry object */ -) { - FRESULT res; - UINT nent; - BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */ - - /* Create set sum */ - st_word(dirb + XDIR_SetSum, xdir_sum(dirb)); - nent = dirb[XDIR_NumSec] + 1; - - /* Store the direcotry entry block to the directory */ - res = dir_sdi(dp, dp->blk_ofs); - while (res == FR_OK) { - res = move_window(dp->obj.fs, dp->sect); - if (res != FR_OK) break; - mem_cpy(dp->dir, dirb, SZDIRE); - dp->obj.fs->wflag = 1; - if (--nent == 0) break; - dirb += SZDIRE; - res = dir_next(dp, 0); - } - return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR; -} - - - -/*-------------------------------------------*/ -/* exFAT: Create a new directory enrty block */ -/*-------------------------------------------*/ - -static -void create_xdir ( - BYTE* dirb, /* Pointer to the direcotry entry block buffer */ - const WCHAR* lfn /* Pointer to the object name */ -) { - UINT i; - BYTE nc1, nlen; - WCHAR wc; - - - /* Create 85,C0 entry */ - mem_set(dirb, 0, 2 * SZDIRE); - dirb[0 * SZDIRE + XDIR_Type] = 0x85; /* 85 entry */ - dirb[1 * SZDIRE + XDIR_Type] = 0xC0; /* C0 entry */ - - /* Create C1 entries */ - i = SZDIRE * 2; /* Top of C1 entries */ - nlen = nc1 = 0; wc = 1; - do { - dirb[i++] = 0xC1; dirb[i++] = 0; /* Entry type C1 */ - do { /* Fill name field */ - if (wc != 0 && (wc = lfn[nlen]) != 0) nlen++; /* Get a character if exist */ - st_word(dirb + i, wc); /* Store it */ - i += 2; - } while (i % SZDIRE != 0); - nc1++; - } while (lfn[nlen]); /* Fill next entry if any char follows */ - - dirb[XDIR_NumName] = nlen; /* Set name length */ - dirb[XDIR_NumSec] = 1 + nc1; /* Set secondary count (C0 + C1s) */ - st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */ -} - -#endif /* !FF_FS_READONLY */ -#endif /* FF_FS_EXFAT */ - - - -#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL || FF_FS_EXFAT -/*-----------------------------------------------------------------------*/ -/* Read an object from the directory */ -/*-----------------------------------------------------------------------*/ - -#define dir_read_file(dp) dir_read(dp, 0) -#define dir_read_label(dp) dir_read(dp, 1) - -static -FRESULT dir_read ( - DIR* dp, /* Pointer to the directory object */ - int vol /* Filtered by 0:file/directory or 1:volume label */ -) { - FRESULT res = FR_NO_FILE; - FATFS *fs = dp->obj.fs; - BYTE a, c; -#if FF_USE_LFN - BYTE ord = 0xFF, sum = 0xFF; -#endif - - while (dp->sect) { - res = move_window(fs, dp->sect); - if (res != FR_OK) break; - c = dp->dir[DIR_Name]; /* Test for the entry type */ - if (c == 0) { - res = FR_NO_FILE; break; /* Reached to end of the directory */ - } -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - if (FF_USE_LABEL && vol) { - if (c == 0x83) break; /* Volume label entry? */ - } else { - if (c == 0x85) { /* Start of the file entry block? */ - dp->blk_ofs = dp->dptr; /* Get location of the block */ - res = load_xdir(dp); /* Load the entry block */ - if (res == FR_OK) { - dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */ - } - break; - } - } - } else -#endif - { /* On the FAT/FAT32 volume */ - dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */ -#if FF_USE_LFN /* LFN configuration */ - if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */ - ord = 0xFF; - } else { - if (a == AM_LFN) { /* An LFN entry is found */ - if (c & LLEF) { /* Is it start of an LFN sequence? */ - sum = dp->dir[LDIR_Chksum]; - c &= (BYTE)~LLEF; ord = c; - dp->blk_ofs = dp->dptr; - } - /* Check LFN validity and capture it */ - ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF; - } else { /* An SFN entry is found */ - if (ord != 0 || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */ - dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */ - } - break; - } - } -#else /* Non LFN configuration */ - if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */ - break; - } -#endif - } - res = dir_next(dp, 0); /* Next entry */ - if (res != FR_OK) break; - } - - if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */ - return res; -} - -#endif /* FF_FS_MINIMIZE <= 1 || FF_USE_LABEL || FF_FS_RPATH >= 2 */ - - - -/*-----------------------------------------------------------------------*/ -/* Directory handling - Find an object in the directory */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */ - DIR* dp /* Pointer to the directory object with the file name */ -) { - FRESULT res; - FATFS *fs = dp->obj.fs; - BYTE c; -#if FF_USE_LFN - BYTE a, ord, sum; -#endif - - res = dir_sdi(dp, 0); /* Rewind directory object */ - if (res != FR_OK) return res; -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - BYTE nc; - UINT di, ni; - WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */ - - while ((res = dir_read_file(dp)) == FR_OK) { /* Read an item */ -#if FF_MAX_LFN < 255 - if (fs->dirbuf[XDIR_NumName] > FF_MAX_LFN) continue; /* Skip comparison if inaccessible object name */ -#endif - if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip comparison if hash mismatched */ - for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */ - if ((di % SZDIRE) == 0) di += 2; - if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break; - } - if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */ - } - return res; - } -#endif - /* On the FAT/FAT32 volume */ -#if FF_USE_LFN - ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ -#endif - do { - res = move_window(fs, dp->sect); - if (res != FR_OK) break; - c = dp->dir[DIR_Name]; - if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ -#if FF_USE_LFN /* LFN configuration */ - dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; - if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ - ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ - } else { - if (a == AM_LFN) { /* An LFN entry is found */ - if (!(dp->fn[NSFLAG] & NS_NOLFN)) { - if (c & LLEF) { /* Is it start of LFN sequence? */ - sum = dp->dir[LDIR_Chksum]; - c &= (BYTE)~LLEF; ord = c; /* LFN start order */ - dp->blk_ofs = dp->dptr; /* Start offset of LFN */ - } - /* Check validity of the LFN entry and compare it with given name */ - ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF; - } - } else { /* An SFN entry is found */ - if (ord == 0 && sum == sum_sfn(dp->dir)) break; /* LFN matched? */ - if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */ - ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ - } - } -#else /* Non LFN configuration */ - dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK; - if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */ -#endif - res = dir_next(dp, 0); /* Next entry */ - } while (res == FR_OK); - - return res; -} - - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Register an object to the directory */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */ - DIR* dp /* Target directory with object name to be created */ -) { - FRESULT res; - FATFS *fs = dp->obj.fs; -#if FF_USE_LFN /* LFN configuration */ - UINT n, nlen, nent; - BYTE sn[12], sum; - - - if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */ - for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */ - -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */ - res = dir_alloc(dp, nent); /* Allocate entries */ - if (res != FR_OK) return res; - dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set the allocated entry block offset */ - - if (dp->obj.stat & 4) { /* Has the directory been stretched? */ - dp->obj.stat &= ~4; - res = fill_first_frag(&dp->obj); /* Fill the first fragment on the FAT if needed */ - if (res != FR_OK) return res; - res = fill_last_frag(&dp->obj, dp->clust, 0xFFFFFFFF); /* Fill the last fragment on the FAT if needed */ - if (res != FR_OK) return res; - if (dp->obj.sclust != 0) { /* Is it a sub directory? */ - DIR dj; - - res = load_obj_xdir(&dj, &dp->obj); /* Load the object status */ - if (res != FR_OK) return res; - dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase the directory size by cluster size */ - st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize); /* Update the allocation status */ - st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize); - fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1; - res = store_xdir(&dj); /* Store the object status */ - if (res != FR_OK) return res; - } - } - - create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */ - return FR_OK; - } -#endif - /* On the FAT/FAT32 volume */ - mem_cpy(sn, dp->fn, 12); - if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ - dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */ - for (n = 1; n < 100; n++) { - gen_numname(dp->fn, sn, fs->lfnbuf, n); /* Generate a numbered name */ - res = dir_find(dp); /* Check if the name collides with existing SFN */ - if (res != FR_OK) break; - } - if (n == 100) return FR_DENIED; /* Abort if too many collisions */ - if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */ - dp->fn[NSFLAG] = sn[NSFLAG]; - } - - /* Create an SFN with/without LFNs. */ - nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */ - res = dir_alloc(dp, nent); /* Allocate entries */ - if (res == FR_OK && --nent) { /* Set LFN entry if needed */ - res = dir_sdi(dp, dp->dptr - nent * SZDIRE); - if (res == FR_OK) { - sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */ - do { /* Store LFN entries in bottom first */ - res = move_window(fs, dp->sect); - if (res != FR_OK) break; - put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum); - fs->wflag = 1; - res = dir_next(dp, 0); /* Next entry */ - } while (res == FR_OK && --nent); - } - } - -#else /* Non LFN configuration */ - res = dir_alloc(dp, 1); /* Allocate an entry for SFN */ - -#endif - - /* Set SFN entry */ - if (res == FR_OK) { - res = move_window(fs, dp->sect); - if (res == FR_OK) { - mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */ - mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */ -#if FF_USE_LFN - dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */ -#endif - fs->wflag = 1; - } - } - - return res; -} - -#endif /* !FF_FS_READONLY */ - - - -#if !FF_FS_READONLY && FF_FS_MINIMIZE == 0 -/*-----------------------------------------------------------------------*/ -/* Remove an object from the directory */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */ - DIR* dp /* Directory object pointing the entry to be removed */ -) { - FRESULT res; - FATFS *fs = dp->obj.fs; -#if FF_USE_LFN /* LFN configuration */ - DWORD last = dp->dptr; - - res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */ - if (res == FR_OK) { - do { - res = move_window(fs, dp->sect); - if (res != FR_OK) break; - if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - dp->dir[XDIR_Type] &= 0x7F; /* Clear the entry InUse flag. */ - } else { /* On the FAT/FAT32 volume */ - dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted'. */ - } - fs->wflag = 1; - if (dp->dptr >= last) break; /* If reached last entry then all entries of the object has been deleted. */ - res = dir_next(dp, 0); /* Next entry */ - } while (res == FR_OK); - if (res == FR_NO_FILE) res = FR_INT_ERR; - } -#else /* Non LFN configuration */ - - res = move_window(fs, dp->sect); - if (res == FR_OK) { - dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted'.*/ - fs->wflag = 1; - } -#endif - - return res; -} - -#endif /* !FF_FS_READONLY && FF_FS_MINIMIZE == 0 */ - - - -#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 -/*-----------------------------------------------------------------------*/ -/* Get file information from directory entry */ -/*-----------------------------------------------------------------------*/ - -static -void get_fileinfo ( - DIR* dp, /* Pointer to the directory object */ - FILINFO* fno /* Pointer to the file information to be filled */ -) { - UINT si, di; -#if FF_USE_LFN - WCHAR wc, hs; - FATFS *fs = dp->obj.fs; -#else - TCHAR c; -#endif - - - fno->fname[0] = 0; /* Invaidate file info */ - if (dp->sect == 0) return; /* Exit if read pointer has reached end of directory */ - -#if FF_USE_LFN /* LFN configuration */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - get_xfileinfo(fs->dirbuf, fno); - return; - } else -#endif - { /* On the FAT/FAT32 volume */ - if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */ - si = di = hs = 0; - while (fs->lfnbuf[si] != 0) { - wc = fs->lfnbuf[si++]; /* Get an LFN character (UTF-16) */ - if (hs == 0 && IsSurrogate(wc)) { /* Is it a surrogate? */ - hs = wc; continue; /* Get low surrogate */ - } - wc = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di); /* Store it in UTF-16 or UTF-8 encoding */ - if (wc == 0) { di = 0; break; } /* Invalid char or buffer overflow? */ - di += wc; - hs = 0; - } - if (hs != 0) di = 0; /* Broken surrogate pair? */ - fno->fname[di] = 0; /* Terminate the LFN (null string means LFN is invalid) */ - } - } - - si = di = 0; - while (si < 11) { /* Get SFN from SFN entry */ - wc = dp->dir[si++]; /* Get a char */ - if (wc == ' ') continue; /* Skip padding spaces */ - if (wc == RDDEM) wc = DDEM; /* Restore replaced DDEM character */ - if (si == 9 && di < FF_SFN_BUF) fno->altname[di++] = '.'; /* Insert a . if extension is exist */ -#if FF_LFN_UNICODE >= 1 /* Unicode output */ - if (dbc_1st((BYTE)wc) && si != 8 && si != 11 && dbc_2nd(dp->dir[si])) { /* Make a DBC if needed */ - wc = wc << 8 | dp->dir[si++]; - } - wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM -> Unicode */ - if (wc == 0) { di = 0; break; } /* Wrong char in the current code page? */ - wc = put_utf(wc, &fno->altname[di], FF_SFN_BUF - di); /* Store it in UTF-16 or UTF-8 */ - if (wc == 0) { di = 0; break; } /* Buffer overflow? */ - di += wc; -#else /* ANSI/OEM output */ - fno->altname[di++] = (TCHAR)wc; /* Store it without any conversion */ -#endif - } - fno->altname[di] = 0; /* Terminate the SFN (null string means SFN is invalid) */ - - if (fno->fname[0] == 0) { /* If LFN is invalid, altname[] needs to be copied to fname[] */ - if (di == 0) { /* If LFN and SFN both are invalid, this object is inaccesible */ - fno->fname[di++] = '?'; - } else { - for (si = di = 0; fno->altname[si]; si++, di++) { /* Copy altname[] to fname[] with case information */ - wc = (WCHAR)fno->altname[si]; - if (IsUpper(wc) && (dp->dir[DIR_NTres] & ((si >= 9) ? NS_EXT : NS_BODY))) wc += 0x20; - fno->fname[di] = (TCHAR)wc; - } - } - fno->fname[di] = 0; /* Terminate the LFN */ - if (!dp->dir[DIR_NTres]) fno->altname[0] = 0; /* Altname is not needed if neither LFN nor case info is exist. */ - } - -#else /* Non-LFN configuration */ - si = di = 0; - while (si < 11) { /* Copy name body and extension */ - c = (TCHAR)dp->dir[si++]; - if (c == ' ') continue; /* Skip padding spaces */ - if (c == RDDEM) c = DDEM; /* Restore replaced DDEM character */ - if (si == 9) fno->fname[di++] = '.';/* Insert a . if extension is exist */ - fno->fname[di++] = c; - } - fno->fname[di] = 0; -#endif - - fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */ - fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */ - fno->ftime = ld_word(dp->dir + DIR_ModTime + 0); /* Time */ - fno->fdate = ld_word(dp->dir + DIR_ModTime + 2); /* Date */ -} - -#endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */ - - - -#if FF_USE_FIND && FF_FS_MINIMIZE <= 1 -/*-----------------------------------------------------------------------*/ -/* Pattern matching */ -/*-----------------------------------------------------------------------*/ - -static -DWORD get_achar ( /* Get a character and advances ptr */ - const TCHAR** ptr /* Pointer to pointer to the ANSI/OEM or Unicode string */ -) { - DWORD chr; - - -#if FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode input */ - chr = tchar2uni(ptr); - if (chr == 0xFFFFFFFF) chr = 0; /* Wrong UTF encoding is recognized as end of the string */ - chr = ff_wtoupper(chr); - -#else /* ANSI/OEM input */ - chr = (BYTE)*(*ptr)++; /* Get a byte */ - if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */ -#if FF_CODE_PAGE == 0 - if (ExCvt && chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */ -#elif FF_CODE_PAGE < 900 - if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */ -#endif -#if FF_CODE_PAGE == 0 || FF_CODE_PAGE >= 900 - if (dbc_1st((BYTE)chr)) { /* Get DBC 2nd byte if needed */ - chr = dbc_2nd((BYTE)**ptr) ? chr << 8 | (BYTE)*(*ptr)++ : 0; - } -#endif - -#endif - return chr; -} - - -static -int pattern_matching ( /* 0:not matched, 1:matched */ - const TCHAR* pat, /* Matching pattern */ - const TCHAR* nam, /* String to be tested */ - int skip, /* Number of pre-skip chars (number of ?s) */ - int inf /* Infinite search (* specified) */ -) { - const TCHAR *pp, *np; - DWORD pc, nc; - int nm, nx; - - - while (skip--) { /* Pre-skip name chars */ - if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */ - } - if (*pat == 0 && inf) return 1; /* (short circuit) */ - - do { - pp = pat; np = nam; /* Top of pattern and name to match */ - for (;;) { - if (*pp == '?' || *pp == '*') { /* Wildcard? */ - nm = nx = 0; - do { /* Analyze the wildcard block */ - if (*pp++ == '?') nm++; else nx = 1; - } while (*pp == '?' || *pp == '*'); - if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */ - nc = *np; break; /* Branch mismatched */ - } - pc = get_achar(&pp); /* Get a pattern char */ - nc = get_achar(&np); /* Get a name char */ - if (pc != nc) break; /* Branch mismatched? */ - if (pc == 0) return 1; /* Branch matched? (matched at end of both strings) */ - } - get_achar(&nam); /* nam++ */ - } while (inf && nc); /* Retry until end of name if infinite search is specified */ - - return 0; -} - -#endif /* FF_USE_FIND && FF_FS_MINIMIZE <= 1 */ - - - -/*-----------------------------------------------------------------------*/ -/* Pick a top segment and create the object name in directory form */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */ - DIR* dp, /* Pointer to the directory object */ - const TCHAR** path /* Pointer to pointer to the segment in the path string */ -) { -#if FF_USE_LFN /* LFN configuration */ - BYTE b, cf; - WCHAR wc, *lfn; - DWORD uc; - UINT i, ni, si, di; - const TCHAR *p; - - - /* Create LFN into LFN working buffer */ - p = *path; lfn = dp->obj.fs->lfnbuf; di = 0; - for (;;) { - uc = tchar2uni(&p); /* Get a character */ - if (uc == 0xFFFFFFFF) return FR_INVALID_NAME; /* Invalid code or UTF decode error */ - if (uc >= 0x10000) lfn[di++] = (WCHAR)(uc >> 16); /* Store high surrogate if needed */ - wc = (WCHAR)uc; - if (wc < ' ' || wc == '/' || wc == '\\') break; /* Break if end of the path or a separator is found */ - if (wc < 0x80 && chk_chr("\"*:<>\?|\x7F", wc)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */ - if (di >= FF_MAX_LFN) return FR_INVALID_NAME; /* Reject too long name */ - lfn[di++] = wc; /* Store the Unicode character */ - } - while (*p == '/' || *p == '\\') p++; /* Skip duplicated separators if exist */ - *path = p; /* Return pointer to the next segment */ - cf = (wc < ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */ - -#if FF_FS_RPATH != 0 - if ((di == 1 && lfn[di - 1] == '.') || - (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */ - lfn[di] = 0; - for (i = 0; i < 11; i++) { /* Create dot name for SFN entry */ - dp->fn[i] = (i < di) ? '.' : ' '; - } - dp->fn[i] = cf | NS_DOT; /* This is a dot entry */ - return FR_OK; - } -#endif - while (di) { /* Snip off trailing spaces and dots if exist */ - wc = lfn[di - 1]; - if (wc != ' ' && wc != '.') break; - di--; - } - lfn[di] = 0; /* LFN is created into the working buffer */ - if (di == 0) return FR_INVALID_NAME; /* Reject null name */ - - /* Create SFN in directory form */ - for (si = 0; lfn[si] == ' '; si++) ; /* Remove leading spaces */ - if (si > 0 || lfn[si] == '.') cf |= NS_LOSS | NS_LFN; /* Is there any leading space or dot? */ - while (di > 0 && lfn[di - 1] != '.') di--; /* Find last dot (di<=si: no extension) */ - - mem_set(dp->fn, ' ', 11); - i = b = 0; ni = 8; - for (;;) { - wc = lfn[si++]; /* Get an LFN character */ - if (wc == 0) break; /* Break on end of the LFN */ - if (wc == ' ' || (wc == '.' && si != di)) { /* Remove embedded spaces and dots */ - cf |= NS_LOSS | NS_LFN; - continue; - } - - if (i >= ni || si == di) { /* End of field? */ - if (ni == 11) { /* Name extension overflow? */ - cf |= NS_LOSS | NS_LFN; - break; - } - if (si != di) cf |= NS_LOSS | NS_LFN; /* Name body overflow? */ - if (si > di) break; /* No name extension? */ - si = di; i = 8; ni = 11; b <<= 2; /* Enter name extension */ - continue; - } - - if (wc >= 0x80) { /* Is this a non-ASCII character? */ - cf |= NS_LFN; /* LFN entry needs to be created */ -#if FF_CODE_PAGE == 0 - if (ExCvt) { /* At SBCS */ - wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */ - if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */ - } else { /* At DBCS */ - wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Upper convert ==> ANSI/OEM code */ - } -#elif FF_CODE_PAGE < 900 /* SBCS cfg */ - wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */ - if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */ -#else /* DBCS cfg */ - wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Upper convert ==> ANSI/OEM code */ -#endif - } - - if (wc >= 0x100) { /* Is this a DBC? */ - if (i >= ni - 1) { /* Field overflow? */ - cf |= NS_LOSS | NS_LFN; - i = ni; continue; /* Next field */ - } - dp->fn[i++] = (BYTE)(wc >> 8); /* Put 1st byte */ - } else { /* SBC */ - if (wc == 0 || chk_chr("+,;=[]", wc)) { /* Replace illegal characters for SFN if needed */ - wc = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */ - } else { - if (IsUpper(wc)) { /* ASCII upper case? */ - b |= 2; - } - if (IsLower(wc)) { /* ASCII lower case? */ - b |= 1; wc -= 0x20; - } - } - } - dp->fn[i++] = (BYTE)wc; - } - - if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */ - - if (ni == 8) b <<= 2; /* Shift capital flags if no extension */ - if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* LFN entry needs to be created if composite capitals */ - if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */ - if (b & 0x01) cf |= NS_EXT; /* NT flag (Extension has small capital letters only) */ - if (b & 0x04) cf |= NS_BODY; /* NT flag (Body has small capital letters only) */ - } - - dp->fn[NSFLAG] = cf; /* SFN is created into dp->fn[] */ - - return FR_OK; - - -#else /* FF_USE_LFN : Non-LFN configuration */ - BYTE c, d, *sfn; - UINT ni, si, i; - const char *p; - - /* Create file name in directory form */ - p = *path; sfn = dp->fn; - mem_set(sfn, ' ', 11); - si = i = 0; ni = 8; -#if FF_FS_RPATH != 0 - if (p[si] == '.') { /* Is this a dot entry? */ - for (;;) { - c = (BYTE)p[si++]; - if (c != '.' || si >= 3) break; - sfn[i++] = c; - } - if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME; - *path = p + si; /* Return pointer to the next segment */ - sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */ - return FR_OK; - } -#endif - for (;;) { - c = (BYTE)p[si++]; /* Get a byte */ - if (c <= ' ') break; /* Break if end of the path name */ - if (c == '/' || c == '\\') { /* Break if a separator is found */ - while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */ - break; - } - if (c == '.' || i >= ni) { /* End of body or field overflow? */ - if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Field overflow or invalid dot? */ - i = 8; ni = 11; /* Enter file extension field */ - continue; - } -#if FF_CODE_PAGE == 0 - if (ExCvt && c >= 0x80) { /* Is SBC extended character? */ - c = ExCvt[c & 0x7F]; /* To upper SBC extended character */ - } -#elif FF_CODE_PAGE < 900 - if (c >= 0x80) { /* Is SBC extended character? */ - c = ExCvt[c & 0x7F]; /* To upper SBC extended character */ - } -#endif - if (dbc_1st(c)) { /* Check if it is a DBC 1st byte */ - d = (BYTE)p[si++]; /* Get 2nd byte */ - if (!dbc_2nd(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */ - sfn[i++] = c; - sfn[i++] = d; - } else { /* SBC */ - if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */ - if (IsLower(c)) c -= 0x20; /* To upper */ - sfn[i++] = c; - } - } - *path = p + si; /* Return pointer to the next segment */ - if (i == 0) return FR_INVALID_NAME; /* Reject nul string */ - - if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */ - sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */ - - return FR_OK; -#endif /* FF_USE_LFN */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* Follow a file path */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ - DIR* dp, /* Directory object to return last directory and found object */ - const TCHAR* path /* Full-path string to find a file or directory */ -) { - FRESULT res; - BYTE ns; - FATFS *fs = dp->obj.fs; - - -#if FF_FS_RPATH != 0 - if (*path != '/' && *path != '\\') { /* Without heading separator */ - dp->obj.sclust = fs->cdir; /* Start from current directory */ - } else -#endif - { /* With heading separator */ - while (*path == '/' || *path == '\\') path++; /* Strip heading separator */ - dp->obj.sclust = 0; /* Start from root directory */ - } -#if FF_FS_EXFAT - dp->obj.n_frag = 0; /* Invalidate last fragment counter of the object */ -#if FF_FS_RPATH != 0 - if (fs->fs_type == FS_EXFAT && dp->obj.sclust) { /* exFAT: Retrieve the sub-directory's status */ - DIR dj; - - dp->obj.c_scl = fs->cdc_scl; - dp->obj.c_size = fs->cdc_size; - dp->obj.c_ofs = fs->cdc_ofs; - res = load_obj_xdir(&dj, &dp->obj); - if (res != FR_OK) return res; - dp->obj.objsize = ld_dword(fs->dirbuf + XDIR_FileSize); - dp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2; - } -#endif -#endif - - if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */ - dp->fn[NSFLAG] = NS_NONAME; - res = dir_sdi(dp, 0); - - } else { /* Follow path */ - for (;;) { - res = create_name(dp, &path); /* Get a segment name of the path */ - if (res != FR_OK) break; - res = dir_find(dp); /* Find an object with the segment name */ - ns = dp->fn[NSFLAG]; - if (res != FR_OK) { /* Failed to find the object */ - if (res == FR_NO_FILE) { /* Object is not found */ - if (FF_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, stay there */ - if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */ - dp->fn[NSFLAG] = NS_NONAME; - res = FR_OK; - } else { /* Could not find the object */ - if (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */ - } - } - break; - } - if (ns & NS_LAST) break; /* Last segment matched. Function completed. */ - /* Get into the sub-directory */ - if (!(dp->obj.attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */ - res = FR_NO_PATH; break; - } -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* Save containing directory information for next dir */ - dp->obj.c_scl = dp->obj.sclust; - dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat; - dp->obj.c_ofs = dp->blk_ofs; - init_alloc_info(fs, &dp->obj); /* Open next directory */ - } else -#endif - { - dp->obj.sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */ - } - } - } - - return res; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Get logical drive number from path name */ -/*-----------------------------------------------------------------------*/ - -static -int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */ - const TCHAR** path /* Pointer to pointer to the path name */ -) { - const TCHAR *tp, *tt; - UINT i; - int vol = -1; -#if FF_STR_VOLUME_ID /* Find string drive id */ - static const char* const volid[] = {FF_VOLUME_STRS}; - const char *sp; - char c; - TCHAR tc; -#endif - - - if (*path != 0) { /* If the pointer is not a null */ - for (tt = *path; (UINT)*tt >= (FF_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find a colon in the path */ - if (*tt == ':') { /* If a colon is exist in the path name */ - tp = *path; - i = *tp++; - if (IsDigit(i) && tp == tt) { /* Is there a numeric drive id + colon? */ - if ((i -= '0') < FF_VOLUMES) { /* If drive id is found, get the value and strip it */ - vol = (int)i; - *path = ++tt; - } - } -#if FF_STR_VOLUME_ID - else { /* No numeric drive number, find string drive id */ - i = 0; tt++; - do { - sp = volid[i]; tp = *path; - do { /* Compare a string drive id with path name */ - c = *sp++; tc = *tp++; - if (IsLower(tc)) tc -= 0x20; - } while (c && (TCHAR)c == tc); - } while ((c || tp != tt) && ++i < FF_VOLUMES); /* Repeat for each id until pattern match */ - if (i < FF_VOLUMES) { /* If a drive id is found, get the value and strip it */ - vol = (int)i; - *path = tt; - } - } -#endif - } else { /* No volume id and use default drive */ -#if FF_FS_RPATH != 0 && FF_VOLUMES >= 2 - vol = CurrVol; /* Current drive */ -#else - vol = 0; /* Drive 0 */ -#endif - } - } - return vol; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Load a sector and check if it is an FAT VBR */ -/*-----------------------------------------------------------------------*/ - -static -BYTE check_fs ( /* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */ - FATFS* fs, /* Filesystem object */ - DWORD sect /* Sector# (lba) to load and check if it is an FAT-VBR or not */ -) { - fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */ - if (move_window(fs, sect) != FR_OK) return 4; /* Load boot record */ - - if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed here even if the sector size is >512) */ - -#if FF_FS_EXFAT - if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1; /* Check if exFAT VBR */ -#endif - if (fs->win[BS_JmpBoot] == 0xE9 || fs->win[BS_JmpBoot] == 0xEB || fs->win[BS_JmpBoot] == 0xE8) { /* Valid JumpBoot code? */ - if (!mem_cmp(fs->win + BS_FilSysType, "FAT", 3)) return 0; /* Is it an FAT VBR? */ - if (!mem_cmp(fs->win + BS_FilSysType32, "FAT32", 5)) return 0; /* Is it an FAT32 VBR? */ - } - return 2; /* Valid BS but not FAT */ -} - - - - -/*-----------------------------------------------------------------------*/ -/* Determine logical drive number and mount the volume if needed */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */ - const TCHAR** path, /* Pointer to pointer to the path name (drive number) */ - FATFS** rfs, /* Pointer to pointer to the found filesystem object */ - BYTE mode /* !=0: Check write protection for write access */ -) { - BYTE fmt, *pt; - int vol; - DSTATUS stat; - DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4]; - WORD nrsv; - FATFS *fs; - UINT i; - - - /* Get logical drive number */ - *rfs = 0; - vol = get_ldnumber(path); - if (vol < 0) return FR_INVALID_DRIVE; - - /* Check if the filesystem object is valid or not */ - fs = FatFs[vol]; /* Get pointer to the filesystem object */ - if (!fs) return FR_NOT_ENABLED; /* Is the filesystem object available? */ -#if FF_FS_REENTRANT - if (!lock_fs(fs)) return FR_TIMEOUT; /* Lock the volume */ -#endif - *rfs = fs; /* Return pointer to the filesystem object */ - - mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */ - if (fs->fs_type != 0) { /* If the volume has been mounted */ - stat = disk_status(fs->pdrv); - if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */ - if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check write protection if needed */ - return FR_WRITE_PROTECTED; - } - return FR_OK; /* The filesystem object is valid */ - } - } - - /* The filesystem object is not valid. */ - /* Following code attempts to mount the volume. (analyze BPB and initialize the filesystem object) */ - - fs->fs_type = 0; /* Clear the filesystem object */ - fs->pdrv = LD2PD(vol); /* Bind the logical drive and a physical drive */ - stat = disk_initialize(fs->pdrv); /* Initialize the physical drive */ - if (stat & STA_NOINIT) { /* Check if the initialization succeeded */ - return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */ - } - if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */ - return FR_WRITE_PROTECTED; - } -#if FF_MAX_SS != FF_MIN_SS /* Get sector size (multiple sector size cfg only) */ - if (disk_ioctl(fs->pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR; - if (SS(fs) > FF_MAX_SS || SS(fs) < FF_MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR; -#endif - - /* Find an FAT partition on the drive. Supports only generic partitioning rules, FDISK and SFD. */ - bsect = 0; - fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT-VBR as SFD */ - if (fmt == 2 || (fmt < 2 && LD2PT(vol) != 0)) { /* Not an FAT-VBR or forced partition number */ - for (i = 0; i < 4; i++) { /* Get partition offset */ - pt = fs->win + (MBR_Table + i * SZ_PTE); - br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 0; - } - i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */ - if (i != 0) i--; - do { /* Find an FAT volume */ - bsect = br[i]; - fmt = bsect ? check_fs(fs, bsect) : 3; /* Check the partition */ - } while (LD2PT(vol) == 0 && fmt >= 2 && ++i < 4); - } - if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */ - if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */ - - /* An FAT volume is found (bsect). Following code initializes the filesystem object */ - -#if FF_FS_EXFAT - if (fmt == 1) { - QWORD maxlba; - - for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */ - if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM; - - if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT version (must be version 1.0) */ - - if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) { /* (BPB_BytsPerSecEx must be equal to the physical sector size) */ - return FR_NO_FILESYSTEM; - } - - maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */ - if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */ - - fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */ - - fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */ - if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */ - - fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */ - if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */ - - nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */ - if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */ - fs->n_fatent = nclst + 2; - - /* Boundaries and Limits */ - fs->volbase = bsect; - fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx); - fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx); - if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */ - fs->dirbase = ld_dword(fs->win + BPB_RootClusEx); - - /* Check if bitmap location is in assumption (at the first cluster) */ - if (move_window(fs, clst2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR; - for (i = 0; i < SS(fs); i += SZDIRE) { - if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break; /* 81 entry with cluster #2? */ - } - if (i == SS(fs)) return FR_NO_FILESYSTEM; -#if !FF_FS_READONLY - fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */ -#endif - fmt = FS_EXFAT; /* FAT sub-type */ - } else -#endif /* FF_FS_EXFAT */ - { - if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */ - - fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */ - if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32); - fs->fsize = fasize; - - fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */ - if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ - fasize *= fs->n_fats; /* Number of sectors for FAT area */ - - fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */ - if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */ - - fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */ - if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */ - - tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */ - if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32); - - nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */ - if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */ - - /* Determine the FAT sub type */ - sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */ - if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ - nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ - if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ - fmt = 0; - if (nclst <= MAX_FAT32) fmt = FS_FAT32; - if (nclst <= MAX_FAT16) fmt = FS_FAT16; - if (nclst <= MAX_FAT12) fmt = FS_FAT12; - if (fmt == 0) return FR_NO_FILESYSTEM; - - /* Boundaries and Limits */ - fs->n_fatent = nclst + 2; /* Number of FAT entries */ - fs->volbase = bsect; /* Volume start sector */ - fs->fatbase = bsect + nrsv; /* FAT start sector */ - fs->database = bsect + sysect; /* Data start sector */ - if (fmt == FS_FAT32) { - if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */ - if (fs->n_rootdir != 0) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ - fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */ - szbfat = fs->n_fatent * 4; /* (Needed FAT size) */ - } else { - if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ - fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ - szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */ - fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); - } - if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */ - -#if !FF_FS_READONLY - /* Get FSInfo if available */ - fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */ - fs->fsi_flag = 0x80; -#if (FF_FS_NOFSINFO & 3) != 3 - if (fmt == FS_FAT32 /* Allow to update FSInfo only if BPB_FSInfo32 == 1 */ - && ld_word(fs->win + BPB_FSInfo32) == 1 - && move_window(fs, bsect + 1) == FR_OK) { - fs->fsi_flag = 0; - if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSInfo data if available */ - && ld_dword(fs->win + FSI_LeadSig) == 0x41615252 - && ld_dword(fs->win + FSI_StrucSig) == 0x61417272) { -#if (FF_FS_NOFSINFO & 1) == 0 - fs->free_clst = ld_dword(fs->win + FSI_Free_Count); -#endif -#if (FF_FS_NOFSINFO & 2) == 0 - fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free); -#endif - } - } -#endif /* (FF_FS_NOFSINFO & 3) != 3 */ -#endif /* !FF_FS_READONLY */ - } - - fs->fs_type = fmt; /* FAT sub-type */ - fs->id = ++Fsid; /* Volume mount ID */ -#if FF_USE_LFN == 1 - fs->lfnbuf = LfnBuf; /* Static LFN working buffer */ -#if FF_FS_EXFAT - fs->dirbuf = DirBuf; /* Static directory block scratchpad buuffer */ -#endif -#endif -#if FF_FS_RPATH != 0 - fs->cdir = 0; /* Initialize current directory */ -#endif -#if FF_FS_LOCK != 0 /* Clear file lock semaphores */ - clear_lock(fs); -#endif - return FR_OK; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Check if the file/directory object is valid or not */ -/*-----------------------------------------------------------------------*/ - -static -FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */ - FFOBJID* obj, /* Pointer to the FFOBJID, the 1st member in the FIL/DIR object, to check validity */ - FATFS** rfs /* Pointer to pointer to the owner filesystem object to return */ -) { - FRESULT res = FR_INVALID_OBJECT; - - - if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) { /* Test if the object is valid */ -#if FF_FS_REENTRANT - if (lock_fs(obj->fs)) { /* Obtain the filesystem object */ - if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */ - res = FR_OK; - } else { - unlock_fs(obj->fs, FR_OK); - } - } else { - res = FR_TIMEOUT; - } -#else - if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */ - res = FR_OK; - } -#endif - } - *rfs = (res == FR_OK) ? obj->fs : 0; /* Corresponding filesystem object */ - return res; -} - - - - -/*--------------------------------------------------------------------------- - - Public Functions (FatFs API) - -----------------------------------------------------------------------------*/ - - - -/*-----------------------------------------------------------------------*/ -/* Mount/Unmount a Logical Drive */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_mount ( - FATFS* fs, /* Pointer to the filesystem object (NULL:unmount)*/ - const TCHAR* path, /* Logical drive number to be mounted/unmounted */ - BYTE opt /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */ -) { - FATFS *cfs; - int vol; - FRESULT res; - const TCHAR *rp = path; - - - /* Get logical drive number */ - vol = get_ldnumber(&rp); - if (vol < 0) return FR_INVALID_DRIVE; - cfs = FatFs[vol]; /* Pointer to fs object */ - - if (cfs) { -#if FF_FS_LOCK != 0 - clear_lock(cfs); -#endif -#if FF_FS_REENTRANT /* Discard sync object of the current volume */ - if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR; -#endif - cfs->fs_type = 0; /* Clear old fs object */ - } - - if (fs) { - fs->fs_type = 0; /* Clear new fs object */ -#if FF_FS_REENTRANT /* Create sync object for the new volume */ - if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR; -#endif - } - FatFs[vol] = fs; /* Register new fs object */ - - if (opt == 0) return FR_OK; /* Do not mount now, it will be mounted later */ - - res = find_volume(&path, &fs, 0); /* Force mounted the volume */ - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Open or Create a File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_open ( - FIL* fp, /* Pointer to the blank file object */ - const TCHAR* path, /* Pointer to the file name */ - BYTE mode /* Access mode and file open mode flags */ -) { - FRESULT res; - DIR dj; - FATFS *fs; -#if !FF_FS_READONLY - DWORD dw, cl, bcs, clst, sc; - FSIZE_t ofs; -#endif - DEF_NAMBUF - - - if (!fp) return FR_INVALID_OBJECT; - - /* Get logical drive */ - mode &= FF_FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND; - res = find_volume(&path, &fs, mode); - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the file path */ -#if !FF_FS_READONLY /* Read/Write configuration */ - if (res == FR_OK) { - if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */ - res = FR_INVALID_NAME; - } -#if FF_FS_LOCK != 0 - else { - res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0); /* Check if the file can be used */ - } -#endif - } - /* Create or Open a file */ - if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) { - if (res != FR_OK) { /* No file, create new */ - if (res == FR_NO_FILE) { /* There is no file to open, create a new entry */ -#if FF_FS_LOCK != 0 - res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; -#else - res = dir_register(&dj); -#endif - } - mode |= FA_CREATE_ALWAYS; /* File is created */ - } - else { /* Any object with the same name is already existing */ - if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */ - res = FR_DENIED; - } else { - if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */ - } - } - if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate the file if overwrite mode */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - /* Get current allocation info */ - fp->obj.fs = fs; - init_alloc_info(fs, &fp->obj); - /* Set directory entry block initial state */ - mem_set(fs->dirbuf + 2, 0, 30); /* Clear 85 entry except for NumSec */ - mem_set(fs->dirbuf + 38, 0, 26); /* Clear C0 entry except for NumName and NameHash */ - fs->dirbuf[XDIR_Attr] = AM_ARC; - st_dword(fs->dirbuf + XDIR_CrtTime, GET_FATTIME()); - fs->dirbuf[XDIR_GenFlags] = 1; - res = store_xdir(&dj); - if (res == FR_OK && fp->obj.sclust != 0) { /* Remove the cluster chain if exist */ - res = remove_chain(&fp->obj, fp->obj.sclust, 0); - fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */ - } - } else -#endif - { - /* Set directory entry initial state */ - cl = ld_clust(fs, dj.dir); /* Get current cluster chain */ - st_dword(dj.dir + DIR_CrtTime, GET_FATTIME()); /* Set created time */ - dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */ - st_clust(fs, dj.dir, 0); /* Reset file allocation info */ - st_dword(dj.dir + DIR_FileSize, 0); - fs->wflag = 1; - if (cl != 0) { /* Remove the cluster chain if exist */ - dw = fs->winsect; - res = remove_chain(&dj.obj, cl, 0); - if (res == FR_OK) { - res = move_window(fs, dw); - fs->last_clst = cl - 1; /* Reuse the cluster hole */ - } - } - } - } - } - else { /* Open an existing file */ - if (res == FR_OK) { /* Is the object exsiting? */ - if (dj.obj.attr & AM_DIR) { /* File open against a directory */ - res = FR_NO_FILE; - } else { - if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* Write mode open against R/O file */ - res = FR_DENIED; - } - } - } - } - if (res == FR_OK) { - if (mode & FA_CREATE_ALWAYS) mode |= FA_MODIFIED; /* Set file change flag if created or overwritten */ - fp->dir_sect = fs->winsect; /* Pointer to the directory entry */ - fp->dir_ptr = dj.dir; -#if FF_FS_LOCK != 0 - fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); /* Lock the file for this session */ - if (fp->obj.lockid == 0) res = FR_INT_ERR; -#endif - } -#else /* R/O configuration */ - if (res == FR_OK) { - if (dj.fn[NSFLAG] & NS_NONAME) { /* Is it origin directory itself? */ - res = FR_INVALID_NAME; - } else { - if (dj.obj.attr & AM_DIR) { /* Is it a directory? */ - res = FR_NO_FILE; - } - } - } -#endif - - if (res == FR_OK) { -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - fp->obj.c_scl = dj.obj.sclust; /* Get containing directory info */ - fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat; - fp->obj.c_ofs = dj.blk_ofs; - init_alloc_info(fs, &fp->obj); - } else -#endif - { - fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */ - fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize); - } -#if FF_USE_FASTSEEK - fp->cltbl = 0; /* Disable fast seek mode */ -#endif - fp->obj.fs = fs; /* Validate the file object */ - fp->obj.id = fs->id; - fp->flag = mode; /* Set file access mode */ - fp->err = 0; /* Clear error flag */ - fp->sect = 0; /* Invalidate current data sector */ - fp->fptr = 0; /* Set file pointer top of the file */ -#if !FF_FS_READONLY -#if !FF_FS_TINY - mem_set(fp->buf, 0, FF_MAX_SS); /* Clear sector buffer */ -#endif - if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */ - fp->fptr = fp->obj.objsize; /* Offset to seek */ - bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */ - clst = fp->obj.sclust; /* Follow the cluster chain */ - for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) { - clst = get_fat(&fp->obj, clst); - if (clst <= 1) res = FR_INT_ERR; - if (clst == 0xFFFFFFFF) res = FR_DISK_ERR; - } - fp->clust = clst; - if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */ - if ((sc = clst2sect(fs, clst)) == 0) { - res = FR_INT_ERR; - } else { - fp->sect = sc + (DWORD)(ofs / SS(fs)); -#if !FF_FS_TINY - if (disk_read(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR; -#endif - } - } - } -#endif - } - - FREE_NAMBUF(); - } - - if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */ - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Read File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_read ( - FIL* fp, /* Pointer to the file object */ - void* buff, /* Pointer to data buffer */ - UINT btr, /* Number of bytes to read */ - UINT* br /* Pointer to number of bytes read */ -) { - FRESULT res; - FATFS *fs; - DWORD clst, sect; - FSIZE_t remain; - UINT rcnt, cc, csect; - BYTE *rbuff = (BYTE*)buff; - - - *br = 0; /* Clear read byte counter */ - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */ - if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ - remain = fp->obj.objsize - fp->fptr; - if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ - - for ( ; btr; /* Repeat until all data read */ - btr -= rcnt, *br += rcnt, rbuff += rcnt, fp->fptr += rcnt) { - if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */ - csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */ - if (csect == 0) { /* On the cluster boundary? */ - if (fp->fptr == 0) { /* On the top of the file? */ - clst = fp->obj.sclust; /* Follow cluster chain from the origin */ - } else { /* Middle or end of the file */ -#if FF_USE_FASTSEEK - if (fp->cltbl) { - clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ - } else -#endif - { - clst = get_fat(&fp->obj, fp->clust); /* Follow cluster chain on the FAT */ - } - } - if (clst < 2) ABORT(fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - } - sect = clst2sect(fs, fp->clust); /* Get current sector */ - if (sect == 0) ABORT(fs, FR_INT_ERR); - sect += csect; - cc = btr / SS(fs); /* When remaining bytes >= sector size, */ - if (cc > 0) { /* Read maximum contiguous sectors directly */ - if (csect + cc > fs->csize) { /* Clip at cluster boundary */ - cc = fs->csize - csect; - } - if (disk_read(fs->pdrv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR); -#if !FF_FS_READONLY && FF_FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */ -#if FF_FS_TINY - if (fs->wflag && fs->winsect - sect < cc) { - mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs)); - } -#else - if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) { - mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs)); - } -#endif -#endif - rcnt = SS(fs) * cc; /* Number of bytes transferred */ - continue; - } -#if !FF_FS_TINY - if (fp->sect != sect) { /* Load data sector if not in cache */ -#if !FF_FS_READONLY - if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */ - } -#endif - fp->sect = sect; - } - rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ - if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */ -#if FF_FS_TINY - if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */ - mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */ -#else - mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */ -#endif - } - - LEAVE_FF(fs, FR_OK); -} - - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Write File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_write ( - FIL* fp, /* Pointer to the file object */ - const void* buff, /* Pointer to the data to be written */ - UINT btw, /* Number of bytes to write */ - UINT* bw /* Pointer to number of bytes written */ -) { - FRESULT res; - FATFS *fs; - DWORD clst, sect; - UINT wcnt, cc, csect; - const BYTE *wbuff = (const BYTE*)buff; - - - *bw = 0; /* Clear write byte counter */ - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */ - if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ - - /* Check fptr wrap-around (file size cannot reach 4 GiB at FAT volume) */ - if ((!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) { - btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr); - } - - for ( ; btw; /* Repeat until all data written */ - btw -= wcnt, *bw += wcnt, wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize) { - if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */ - csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */ - if (csect == 0) { /* On the cluster boundary? */ - if (fp->fptr == 0) { /* On the top of the file? */ - clst = fp->obj.sclust; /* Follow from the origin */ - if (clst == 0) { /* If no cluster is allocated, */ - clst = create_chain(&fp->obj, 0); /* create a new cluster chain */ - } - } else { /* On the middle or end of the file */ -#if FF_USE_FASTSEEK - if (fp->cltbl) { - clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ - } else -#endif - { - clst = create_chain(&fp->obj, fp->clust); /* Follow or stretch cluster chain on the FAT */ - } - } - if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ - if (clst == 1) ABORT(fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */ - } -#if FF_FS_TINY - if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */ -#else - if (fp->flag & FA_DIRTY) { /* Write-back sector cache */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - sect = clst2sect(fs, fp->clust); /* Get current sector */ - if (sect == 0) ABORT(fs, FR_INT_ERR); - sect += csect; - cc = btw / SS(fs); /* When remaining bytes >= sector size, */ - if (cc > 0) { /* Write maximum contiguous sectors directly */ - if (csect + cc > fs->csize) { /* Clip at cluster boundary */ - cc = fs->csize - csect; - } - if (disk_write(fs->pdrv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR); -#if FF_FS_MINIMIZE <= 2 -#if FF_FS_TINY - if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ - mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs)); - fs->wflag = 0; - } -#else - if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ - mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs)); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif -#endif - wcnt = SS(fs) * cc; /* Number of bytes transferred */ - continue; - } -#if FF_FS_TINY - if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */ - if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); - fs->winsect = sect; - } -#else - if (fp->sect != sect && /* Fill sector cache with file data */ - fp->fptr < fp->obj.objsize && - disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) { - ABORT(fs, FR_DISK_ERR); - } -#endif - fp->sect = sect; - } - wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ - if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */ -#if FF_FS_TINY - if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */ - mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */ - fs->wflag = 1; -#else - mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */ - fp->flag |= FA_DIRTY; -#endif - } - - fp->flag |= FA_MODIFIED; /* Set file change flag */ - - LEAVE_FF(fs, FR_OK); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Synchronize the File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_sync ( - FIL* fp /* Pointer to the file object */ -) { - FRESULT res; - FATFS *fs; - DWORD tm; - BYTE *dir; - - - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res == FR_OK) { - if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */ -#if !FF_FS_TINY - if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - /* Update the directory entry */ - tm = GET_FATTIME(); /* Modified time */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - res = fill_first_frag(&fp->obj); /* Fill first fragment on the FAT if needed */ - if (res == FR_OK) { - res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */ - } - if (res == FR_OK) { - DIR dj; - DEF_NAMBUF - - INIT_NAMBUF(fs); - res = load_obj_xdir(&dj, &fp->obj); /* Load directory entry block */ - if (res == FR_OK) { - fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive attribute to indicate that the file has been changed */ - fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation information */ - st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust); - st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize); - st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize); - st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */ - fs->dirbuf[XDIR_ModTime10] = 0; - st_dword(fs->dirbuf + XDIR_AccTime, 0); - res = store_xdir(&dj); /* Restore it to the directory */ - if (res == FR_OK) { - res = sync_fs(fs); - fp->flag &= (BYTE)~FA_MODIFIED; - } - } - FREE_NAMBUF(); - } - } else -#endif - { - res = move_window(fs, fp->dir_sect); - if (res == FR_OK) { - dir = fp->dir_ptr; - dir[DIR_Attr] |= AM_ARC; /* Set archive attribute to indicate that the file has been changed */ - st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation information */ - st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */ - st_dword(dir + DIR_ModTime, tm); /* Update modified time */ - st_word(dir + DIR_LstAccDate, 0); - fs->wflag = 1; - res = sync_fs(fs); /* Restore it to the directory */ - fp->flag &= (BYTE)~FA_MODIFIED; - } - } - } - } - - LEAVE_FF(fs, res); -} - -#endif /* !FF_FS_READONLY */ - - - - -/*-----------------------------------------------------------------------*/ -/* Close File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_close ( - FIL* fp /* Pointer to the file object to be closed */ -) { - FRESULT res; - FATFS *fs; - -#if !FF_FS_READONLY - res = f_sync(fp); /* Flush cached data */ - if (res == FR_OK) -#endif - { - res = validate(&fp->obj, &fs); /* Lock volume */ - if (res == FR_OK) { -#if FF_FS_LOCK != 0 - res = dec_lock(fp->obj.lockid); /* Decrement file open counter */ - if (res == FR_OK) fp->obj.fs = 0; /* Invalidate file object */ -#else - fp->obj.fs = 0; /* Invalidate file object */ -#endif -#if FF_FS_REENTRANT - unlock_fs(fs, FR_OK); /* Unlock volume */ -#endif - } - } - return res; -} - - - - -#if FF_FS_RPATH >= 1 -/*-----------------------------------------------------------------------*/ -/* Change Current Directory or Current Drive, Get Current Directory */ -/*-----------------------------------------------------------------------*/ - -#if FF_VOLUMES >= 2 -FRESULT f_chdrive ( - const TCHAR* path /* Drive number */ -) { - int vol; - - - /* Get logical drive number */ - vol = get_ldnumber(&path); - if (vol < 0) return FR_INVALID_DRIVE; - - CurrVol = (BYTE)vol; /* Set it as current volume */ - - return FR_OK; -} -#endif - - -FRESULT f_chdir ( - const TCHAR* path /* Pointer to the directory path */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - DEF_NAMBUF - - /* Get logical drive */ - res = find_volume(&path, &fs, 0); - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the path */ - if (res == FR_OK) { /* Follow completed */ - if (dj.fn[NSFLAG] & NS_NONAME) { - fs->cdir = dj.obj.sclust; /* It is the start directory itself */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - fs->cdc_scl = dj.obj.c_scl; - fs->cdc_size = dj.obj.c_size; - fs->cdc_ofs = dj.obj.c_ofs; - } -#endif - } else { - if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */ - fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */ - fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat; - fs->cdc_ofs = dj.blk_ofs; - } else -#endif - { - fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */ - } - } else { - res = FR_NO_PATH; /* Reached but a file */ - } - } - } - FREE_NAMBUF(); - if (res == FR_NO_FILE) res = FR_NO_PATH; - } - - LEAVE_FF(fs, res); -} - - -#if FF_FS_RPATH >= 2 -FRESULT f_getcwd ( - TCHAR* buff, /* Pointer to the directory path */ - UINT len /* Size of path */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - UINT i, n; - DWORD ccl; - TCHAR *tp; - FILINFO fno; - DEF_NAMBUF - - - *buff = 0; - /* Get logical drive */ - res = find_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */ - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - i = len; /* Bottom of buffer (directory stack base) */ - if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */ - dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */ - while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */ - res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */ - if (res != FR_OK) break; - res = move_window(fs, dj.sect); - if (res != FR_OK) break; - dj.obj.sclust = ld_clust(fs, dj.dir); /* Goto parent directory */ - res = dir_sdi(&dj, 0); - if (res != FR_OK) break; - do { /* Find the entry links to the child directory */ - res = dir_read_file(&dj); - if (res != FR_OK) break; - if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */ - res = dir_next(&dj, 0); - } while (res == FR_OK); - if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */ - if (res != FR_OK) break; - get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */ - for (n = 0; fno.fname[n]; n++) ; - if (i < n + 3) { - res = FR_NOT_ENOUGH_CORE; break; - } - while (n) buff[--i] = fno.fname[--n]; - buff[--i] = '/'; - } - } - tp = buff; - if (res == FR_OK) { -#if FF_VOLUMES >= 2 - *tp++ = '0' + CurrVol; /* Put drive number */ - *tp++ = ':'; -#endif - if (i == len) { /* Root-directory */ - *tp++ = '/'; - } else { /* Sub-directroy */ - do /* Add stacked path str */ - *tp++ = buff[i++]; - while (i < len); - } - } - *tp = 0; - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - -#endif /* FF_FS_RPATH >= 2 */ -#endif /* FF_FS_RPATH >= 1 */ - - - -#if FF_FS_MINIMIZE <= 2 -/*-----------------------------------------------------------------------*/ -/* Seek File Read/Write Pointer */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_lseek ( - FIL* fp, /* Pointer to the file object */ - FSIZE_t ofs /* File pointer from top of file */ -) { - FRESULT res; - FATFS *fs; - DWORD clst, bcs, nsect; - FSIZE_t ifptr; -#if FF_USE_FASTSEEK - DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; -#endif - - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res == FR_OK) res = (FRESULT)fp->err; -#if FF_FS_EXFAT && !FF_FS_READONLY - if (res == FR_OK && fs->fs_type == FS_EXFAT) { - res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */ - } -#endif - if (res != FR_OK) LEAVE_FF(fs, res); - -#if FF_USE_FASTSEEK - if (fp->cltbl) { /* Fast seek */ - if (ofs == CREATE_LINKMAP) { /* Create CLMT */ - tbl = fp->cltbl; - tlen = *tbl++; ulen = 2; /* Given table size and required table size */ - cl = fp->obj.sclust; /* Origin of the chain */ - if (cl != 0) { - do { - /* Get a fragment */ - tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */ - do { - pcl = cl; ncl++; - cl = get_fat(&fp->obj, cl); - if (cl <= 1) ABORT(fs, FR_INT_ERR); - if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - } while (cl == pcl + 1); - if (ulen <= tlen) { /* Store the length and top of the fragment */ - *tbl++ = ncl; *tbl++ = tcl; - } - } while (cl < fs->n_fatent); /* Repeat until end of chain */ - } - *fp->cltbl = ulen; /* Number of items used */ - if (ulen <= tlen) { - *tbl = 0; /* Terminate table */ - } else { - res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */ - } - } else { /* Fast seek */ - if (ofs > fp->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */ - fp->fptr = ofs; /* Set file pointer */ - if (ofs > 0) { - fp->clust = clmt_clust(fp, ofs - 1); - dsc = clst2sect(fs, fp->clust); - if (dsc == 0) ABORT(fs, FR_INT_ERR); - dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1); - if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */ -#if !FF_FS_TINY -#if !FF_FS_READONLY - if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - if (disk_read(fs->pdrv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */ -#endif - fp->sect = dsc; - } - } - } - } else -#endif - - /* Normal Seek */ { -#if FF_FS_EXFAT - if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4 GiB - 1 if at FATxx */ -#endif - if (ofs > fp->obj.objsize && (FF_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */ - ofs = fp->obj.objsize; - } - ifptr = fp->fptr; - fp->fptr = nsect = 0; - if (ofs > 0) { - bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */ - if (ifptr > 0 && - (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ - fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */ - ofs -= fp->fptr; - clst = fp->clust; - } else { /* When seek to back cluster, */ - clst = fp->obj.sclust; /* start from the first cluster */ -#if !FF_FS_READONLY - if (clst == 0) { /* If no cluster chain, create a new chain */ - clst = create_chain(&fp->obj, 0); - if (clst == 1) ABORT(fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - fp->obj.sclust = clst; - } -#endif - fp->clust = clst; - } - if (clst != 0) { - while (ofs > bcs) { /* Cluster following loop */ - ofs -= bcs; fp->fptr += bcs; -#if !FF_FS_READONLY - if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ - if (FF_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */ - fp->obj.objsize = fp->fptr; - fp->flag |= FA_MODIFIED; - } - clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */ - if (clst == 0) { /* Clip file size in case of disk full */ - ofs = 0; break; - } - } else -#endif - { - clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */ - } - if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR); - fp->clust = clst; - } - fp->fptr += ofs; - if (ofs % SS(fs)) { - nsect = clst2sect(fs, clst); /* Current sector */ - if (nsect == 0) ABORT(fs, FR_INT_ERR); - nsect += (DWORD)(ofs / SS(fs)); - } - } - } - if (!FF_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */ - fp->obj.objsize = fp->fptr; - fp->flag |= FA_MODIFIED; - } - if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */ -#if !FF_FS_TINY -#if !FF_FS_READONLY - if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - if (disk_read(fs->pdrv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */ -#endif - fp->sect = nsect; - } - } - - LEAVE_FF(fs, res); -} - - - -#if FF_FS_MINIMIZE <= 1 -/*-----------------------------------------------------------------------*/ -/* Create a Directory Object */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_opendir ( - DIR* dp, /* Pointer to directory object to create */ - const TCHAR* path /* Pointer to the directory path */ -) { - FRESULT res; - FATFS *fs; - DEF_NAMBUF - - - if (!dp) return FR_INVALID_OBJECT; - - /* Get logical drive */ - res = find_volume(&path, &fs, 0); - if (res == FR_OK) { - dp->obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(dp, path); /* Follow the path to the directory */ - if (res == FR_OK) { /* Follow completed */ - if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */ - if (dp->obj.attr & AM_DIR) { /* This object is a sub-directory */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - dp->obj.c_scl = dp->obj.sclust; /* Get containing directory inforamation */ - dp->obj.c_size = ((DWORD)dp->obj.objsize & 0xFFFFFF00) | dp->obj.stat; - dp->obj.c_ofs = dp->blk_ofs; - init_alloc_info(fs, &dp->obj); /* Get object allocation info */ - } else -#endif - { - dp->obj.sclust = ld_clust(fs, dp->dir); /* Get object allocation info */ - } - } else { /* This object is a file */ - res = FR_NO_PATH; - } - } - if (res == FR_OK) { - dp->obj.id = fs->id; - res = dir_sdi(dp, 0); /* Rewind directory */ -#if FF_FS_LOCK != 0 - if (res == FR_OK) { - if (dp->obj.sclust != 0) { - dp->obj.lockid = inc_lock(dp, 0); /* Lock the sub directory */ - if (!dp->obj.lockid) res = FR_TOO_MANY_OPEN_FILES; - } else { - dp->obj.lockid = 0; /* Root directory need not to be locked */ - } - } -#endif - } - } - FREE_NAMBUF(); - if (res == FR_NO_FILE) res = FR_NO_PATH; - } - if (res != FR_OK) dp->obj.fs = 0; /* Invalidate the directory object if function faild */ - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Close Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_closedir ( - DIR *dp /* Pointer to the directory object to be closed */ -) { - FRESULT res; - FATFS *fs; - - - res = validate(&dp->obj, &fs); /* Check validity of the file object */ - if (res == FR_OK) { -#if FF_FS_LOCK != 0 - if (dp->obj.lockid) res = dec_lock(dp->obj.lockid); /* Decrement sub-directory open counter */ - if (res == FR_OK) dp->obj.fs = 0; /* Invalidate directory object */ -#else - dp->obj.fs = 0; /* Invalidate directory object */ -#endif -#if FF_FS_REENTRANT - unlock_fs(fs, FR_OK); /* Unlock volume */ -#endif - } - return res; -} - - - - -/*-----------------------------------------------------------------------*/ -/* Read Directory Entries in Sequence */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_readdir ( - DIR* dp, /* Pointer to the open directory object */ - FILINFO* fno /* Pointer to file information to return */ -) { - FRESULT res; - FATFS *fs; - DEF_NAMBUF - - - res = validate(&dp->obj, &fs); /* Check validity of the directory object */ - if (res == FR_OK) { - if (!fno) { - res = dir_sdi(dp, 0); /* Rewind the directory object */ - } else { - INIT_NAMBUF(fs); - res = dir_read_file(dp); /* Read an item */ - if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */ - if (res == FR_OK) { /* A valid entry is found */ - get_fileinfo(dp, fno); /* Get the object information */ - res = dir_next(dp, 0); /* Increment index for next */ - if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */ - } - FREE_NAMBUF(); - } - } - LEAVE_FF(fs, res); -} - - - -#if FF_USE_FIND -/*-----------------------------------------------------------------------*/ -/* Find Next File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_findnext ( - DIR* dp, /* Pointer to the open directory object */ - FILINFO* fno /* Pointer to the file information structure */ -) { - FRESULT res; - - - for (;;) { - res = f_readdir(dp, fno); /* Get a directory item */ - if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */ - if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */ -#if FF_USE_LFN && FF_USE_FIND == 2 - if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */ -#endif - } - return res; -} - - - -/*-----------------------------------------------------------------------*/ -/* Find First File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_findfirst ( - DIR* dp, /* Pointer to the blank directory object */ - FILINFO* fno, /* Pointer to the file information structure */ - const TCHAR* path, /* Pointer to the directory to open */ - const TCHAR* pattern /* Pointer to the matching pattern */ -) { - FRESULT res; - - - dp->pat = pattern; /* Save pointer to pattern string */ - res = f_opendir(dp, path); /* Open the target directory */ - if (res == FR_OK) { - res = f_findnext(dp, fno); /* Find the first item */ - } - return res; -} - -#endif /* FF_USE_FIND */ - - - -#if FF_FS_MINIMIZE == 0 -/*-----------------------------------------------------------------------*/ -/* Get File Status */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_stat ( - const TCHAR* path, /* Pointer to the file path */ - FILINFO* fno /* Pointer to file information to return */ -) { - FRESULT res; - DIR dj; - DEF_NAMBUF - - - /* Get logical drive */ - res = find_volume(&path, &dj.obj.fs, 0); - if (res == FR_OK) { - INIT_NAMBUF(dj.obj.fs); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK) { /* Follow completed */ - if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */ - res = FR_INVALID_NAME; - } else { /* Found an object */ - if (fno) get_fileinfo(&dj, fno); - } - } - FREE_NAMBUF(); - } - - LEAVE_FF(dj.obj.fs, res); -} - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Get Number of Free Clusters */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_getfree ( - const TCHAR* path, /* Logical drive number */ - DWORD* nclst, /* Pointer to a variable to return number of free clusters */ - FATFS** fatfs /* Pointer to return pointer to corresponding filesystem object */ -) { - FRESULT res; - FATFS *fs; - DWORD nfree, clst, sect, stat; - UINT i; - FFOBJID obj; - - - /* Get logical drive */ - res = find_volume(&path, &fs, 0); - if (res == FR_OK) { - *fatfs = fs; /* Return ptr to the fs object */ - /* If free_clst is valid, return it without full FAT scan */ - if (fs->free_clst <= fs->n_fatent - 2) { - *nclst = fs->free_clst; - } else { - /* Scan FAT to obtain number of free clusters */ - nfree = 0; - if (fs->fs_type == FS_FAT12) { /* FAT12: Scan bit field FAT entries */ - clst = 2; obj.fs = fs; - do { - stat = get_fat(&obj, clst); - if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } - if (stat == 1) { res = FR_INT_ERR; break; } - if (stat == 0) nfree++; - } while (++clst < fs->n_fatent); - } else { -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan allocation bitmap */ - BYTE bm; - UINT b; - - clst = fs->n_fatent - 2; /* Number of clusters */ - sect = fs->database; /* Assuming bitmap starts at cluster 2 */ - i = 0; /* Offset in the sector */ - do { /* Counts numbuer of bits with zero in the bitmap */ - if (i == 0) { - res = move_window(fs, sect++); - if (res != FR_OK) break; - } - for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) { - if (!(bm & 1)) nfree++; - bm >>= 1; - } - i = (i + 1) % SS(fs); - } while (clst); - } else -#endif - { /* FAT16/32: Scan WORD/DWORD FAT entries */ - clst = fs->n_fatent; /* Number of entries */ - sect = fs->fatbase; /* Top of the FAT */ - i = 0; /* Offset in the sector */ - do { /* Counts numbuer of entries with zero in the FAT */ - if (i == 0) { - res = move_window(fs, sect++); - if (res != FR_OK) break; - } - if (fs->fs_type == FS_FAT16) { - if (ld_word(fs->win + i) == 0) nfree++; - i += 2; - } else { - if ((ld_dword(fs->win + i) & 0x0FFFFFFF) == 0) nfree++; - i += 4; - } - i %= SS(fs); - } while (--clst); - } - } - *nclst = nfree; /* Return the free clusters */ - fs->free_clst = nfree; /* Now free_clst is valid */ - fs->fsi_flag |= 1; /* FAT32: FSInfo is to be updated */ - } - } - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Truncate File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_truncate ( - FIL* fp /* Pointer to the file object */ -) { - FRESULT res; - FATFS *fs; - DWORD ncl; - - - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); - if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ - - if (fp->fptr < fp->obj.objsize) { /* Process when fptr is not on the eof */ - if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ - res = remove_chain(&fp->obj, fp->obj.sclust, 0); - fp->obj.sclust = 0; - } else { /* When truncate a part of the file, remove remaining clusters */ - ncl = get_fat(&fp->obj, fp->clust); - res = FR_OK; - if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; - if (ncl == 1) res = FR_INT_ERR; - if (res == FR_OK && ncl < fs->n_fatent) { - res = remove_chain(&fp->obj, ncl, fp->clust); - } - } - fp->obj.objsize = fp->fptr; /* Set file size to current read/write point */ - fp->flag |= FA_MODIFIED; -#if !FF_FS_TINY - if (res == FR_OK && (fp->flag & FA_DIRTY)) { - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) { - res = FR_DISK_ERR; - } else { - fp->flag &= (BYTE)~FA_DIRTY; - } - } -#endif - if (res != FR_OK) ABORT(fs, res); - } - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Delete a File/Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_unlink ( - const TCHAR* path /* Pointer to the file or directory path */ -) { - FRESULT res; - DIR dj, sdj; - DWORD dclst = 0; - FATFS *fs; -#if FF_FS_EXFAT - FFOBJID obj; -#endif - DEF_NAMBUF - - - /* Get logical drive */ - res = find_volume(&path, &fs, FA_WRITE); - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the file path */ - if (FF_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) { - res = FR_INVALID_NAME; /* Cannot remove dot entry */ - } -#if FF_FS_LOCK != 0 - if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */ -#endif - if (res == FR_OK) { /* The object is accessible */ - if (dj.fn[NSFLAG] & NS_NONAME) { - res = FR_INVALID_NAME; /* Cannot remove the origin directory */ - } else { - if (dj.obj.attr & AM_RDO) { - res = FR_DENIED; /* Cannot remove R/O object */ - } - } - if (res == FR_OK) { -#if FF_FS_EXFAT - obj.fs = fs; - if (fs->fs_type == FS_EXFAT) { - init_alloc_info(fs, &obj); - dclst = obj.sclust; - } else -#endif - { - dclst = ld_clust(fs, dj.dir); - } - if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */ -#if FF_FS_RPATH != 0 - if (dclst == fs->cdir) { /* Is it the current directory? */ - res = FR_DENIED; - } else -#endif - { - sdj.obj.fs = fs; /* Open the sub-directory */ - sdj.obj.sclust = dclst; -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - sdj.obj.objsize = obj.objsize; - sdj.obj.stat = obj.stat; - } -#endif - res = dir_sdi(&sdj, 0); - if (res == FR_OK) { - res = dir_read_file(&sdj); /* Test if the directory is empty */ - if (res == FR_OK) res = FR_DENIED; /* Not empty? */ - if (res == FR_NO_FILE) res = FR_OK; /* Empty? */ - } - } - } - } - if (res == FR_OK) { - res = dir_remove(&dj); /* Remove the directory entry */ - if (res == FR_OK && dclst != 0) { /* Remove the cluster chain if exist */ -#if FF_FS_EXFAT - res = remove_chain(&obj, dclst, 0); -#else - res = remove_chain(&dj.obj, dclst, 0); -#endif - } - if (res == FR_OK) res = sync_fs(fs); - } - } - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Create a Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_mkdir ( - const TCHAR* path /* Pointer to the directory path */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - BYTE *dir; - DWORD dcl, pcl, tm; - DEF_NAMBUF - - - /* Get logical drive */ - res = find_volume(&path, &fs, FA_WRITE); - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */ - if (FF_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) { - res = FR_INVALID_NAME; - } - if (res == FR_NO_FILE) { /* Can create a new directory */ - dcl = create_chain(&dj.obj, 0); /* Allocate a cluster for the new directory table */ - dj.obj.objsize = (DWORD)fs->csize * SS(fs); - res = FR_OK; - if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ - if (dcl == 1) res = FR_INT_ERR; - if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; - if (res == FR_OK) res = sync_window(fs); /* Flush FAT */ - tm = GET_FATTIME(); - if (res == FR_OK) { /* Initialize the new directory table */ - res = dir_clear(fs, dcl); /* Clean up the new table */ - if (res == FR_OK && (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT)) { /* Create dot entries (FAT only) */ - dir = fs->win; - mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */ - dir[DIR_Name] = '.'; - dir[DIR_Attr] = AM_DIR; - st_dword(dir + DIR_ModTime, tm); - st_clust(fs, dir, dcl); - mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */ - dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust; - st_clust(fs, dir + SZDIRE, pcl); - fs->wflag = 1; - } - } - if (res == FR_OK) { - res = dir_register(&dj); /* Register the object to the directoy */ - } - if (res == FR_OK) { -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */ - st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */ - st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */ - st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize); /* File size needs to be valid */ - st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize); - fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag */ - fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */ - res = store_xdir(&dj); - } else -#endif - { - dir = dj.dir; - st_dword(dir + DIR_ModTime, tm); /* Created time */ - st_clust(fs, dir, dcl); /* Table start cluster */ - dir[DIR_Attr] = AM_DIR; /* Attribute */ - fs->wflag = 1; - } - if (res == FR_OK) { - res = sync_fs(fs); - } - } else { - remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */ - } - } - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Rename a File/Directory */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_rename ( - const TCHAR* path_old, /* Pointer to the object name to be renamed */ - const TCHAR* path_new /* Pointer to the new name */ -) { - FRESULT res; - DIR djo, djn; - FATFS *fs; - BYTE buf[FF_FS_EXFAT ? SZDIRE * 2 : SZDIRE], *dir; - DWORD dw; - DEF_NAMBUF - - - get_ldnumber(&path_new); /* Snip the drive number of new name off */ - res = find_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */ - if (res == FR_OK) { - djo.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&djo, path_old); /* Check old object */ - if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */ -#if FF_FS_LOCK != 0 - if (res == FR_OK) { - res = chk_lock(&djo, 2); - } -#endif - if (res == FR_OK) { /* Object to be renamed is found */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* At exFAT volume */ - BYTE nf, nn; - WORD nh; - - mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */ - mem_cpy(&djn, &djo, sizeof djo); - res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */ - if (res == FR_OK) { /* Is new name already in use by any other object? */ - res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST; - } - if (res == FR_NO_FILE) { /* It is a valid path and no name collision */ - res = dir_register(&djn); /* Register the new entry */ - if (res == FR_OK) { - nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName]; - nh = ld_word(fs->dirbuf + XDIR_NameHash); - mem_cpy(fs->dirbuf, buf, SZDIRE * 2); /* Restore 85+C0 entry */ - fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn; - st_word(fs->dirbuf + XDIR_NameHash, nh); - if (!(fs->dirbuf[XDIR_Attr] & AM_DIR)) fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive attribute if it is a file */ -/* Start of critical section where an interruption can cause a cross-link */ - res = store_xdir(&djn); - } - } - } else -#endif - { /* At FAT/FAT32 volume */ - mem_cpy(buf, djo.dir, SZDIRE); /* Save directory entry of the object */ - mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */ - res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */ - if (res == FR_OK) { /* Is new name already in use by any other object? */ - res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST; - } - if (res == FR_NO_FILE) { /* It is a valid path and no name collision */ - res = dir_register(&djn); /* Register the new entry */ - if (res == FR_OK) { - dir = djn.dir; /* Copy directory entry of the object except name */ - mem_cpy(dir + 13, buf + 13, SZDIRE - 13); - dir[DIR_Attr] = buf[DIR_Attr]; - if (!(dir[DIR_Attr] & AM_DIR)) dir[DIR_Attr] |= AM_ARC; /* Set archive attribute if it is a file */ - fs->wflag = 1; - if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */ - dw = clst2sect(fs, ld_clust(fs, dir)); - if (dw == 0) { - res = FR_INT_ERR; - } else { -/* Start of critical section where an interruption can cause a cross-link */ - res = move_window(fs, dw); - dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */ - if (res == FR_OK && dir[1] == '.') { - st_clust(fs, dir, djn.obj.sclust); - fs->wflag = 1; - } - } - } - } - } - } - if (res == FR_OK) { - res = dir_remove(&djo); /* Remove old entry */ - if (res == FR_OK) { - res = sync_fs(fs); - } - } -/* End of the critical section */ - } - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - -#endif /* !FF_FS_READONLY */ -#endif /* FF_FS_MINIMIZE == 0 */ -#endif /* FF_FS_MINIMIZE <= 1 */ -#endif /* FF_FS_MINIMIZE <= 2 */ - - - -#if FF_USE_CHMOD && !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Change Attribute */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_chmod ( - const TCHAR* path, /* Pointer to the file path */ - BYTE attr, /* Attribute bits */ - BYTE mask /* Attribute mask to change */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - DEF_NAMBUF - - - res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */ - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */ - if (res == FR_OK) { - mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */ - res = store_xdir(&dj); - } else -#endif - { - dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ - fs->wflag = 1; - } - if (res == FR_OK) { - res = sync_fs(fs); - } - } - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Change Timestamp */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_utime ( - const TCHAR* path, /* Pointer to the file/directory name */ - const FILINFO* fno /* Pointer to the timestamp to be set */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - DEF_NAMBUF - - - res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */ - if (res == FR_OK) { - dj.obj.fs = fs; - INIT_NAMBUF(fs); - res = follow_path(&dj, path); /* Follow the file path */ - if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */ - if (res == FR_OK) { -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime); - res = store_xdir(&dj); - } else -#endif - { - st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime); - fs->wflag = 1; - } - if (res == FR_OK) { - res = sync_fs(fs); - } - } - FREE_NAMBUF(); - } - - LEAVE_FF(fs, res); -} - -#endif /* FF_USE_CHMOD && !FF_FS_READONLY */ - - - -#if FF_USE_LABEL -/*-----------------------------------------------------------------------*/ -/* Get Volume Label */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_getlabel ( - const TCHAR* path, /* Logical drive number */ - TCHAR* label, /* Buffer to store the volume label */ - DWORD* vsn /* Variable to store the volume serial number */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - UINT si, di; - WCHAR wc; - - /* Get logical drive */ - res = find_volume(&path, &fs, 0); - - /* Get volume label */ - if (res == FR_OK && label) { - dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */ - res = dir_sdi(&dj, 0); - if (res == FR_OK) { - res = dir_read_label(&dj); /* Find a volume label entry */ - if (res == FR_OK) { -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - WCHAR hs; - - for (si = di = hs = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */ - wc = ld_word(dj.dir + XDIR_Label + si * 2); - if (hs == 0 && IsSurrogate(wc)) { /* Is the code a surrogate? */ - hs = wc; continue; - } - wc = put_utf((DWORD)hs << 16 | wc, &label[di], 4); - if (wc == 0) { di = 0; break; } - di += wc; - hs = 0; - } - if (hs != 0) di = 0; /* Broken surrogate pair? */ - label[di] = 0; - } else -#endif - { - si = di = 0; /* Extract volume label from AM_VOL entry */ - while (si < 11) { - wc = dj.dir[si++]; -#if FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode output */ - if (dbc_1st((BYTE)wc) && si < 11) wc = wc << 8 | dj.dir[si++]; /* Is it a DBC? */ - wc = ff_oem2uni(wc, CODEPAGE); - if (wc != 0) wc = put_utf(wc, &label[di], 4); - if (wc == 0) { di = 0; break; } - di += wc; -#else /* ANSI/OEM output */ - label[di++] = (TCHAR)wc; -#endif - } - do { /* Truncate trailing spaces */ - label[di] = 0; - if (di == 0) break; - } while (label[--di] == ' '); - } - } - } - if (res == FR_NO_FILE) { /* No label entry and return nul string */ - label[0] = 0; - res = FR_OK; - } - } - - /* Get volume serial number */ - if (res == FR_OK && vsn) { - res = move_window(fs, fs->volbase); - if (res == FR_OK) { - switch (fs->fs_type) { - case FS_EXFAT: - di = BPB_VolIDEx; break; - - case FS_FAT32: - di = BS_VolID32; break; - - default: - di = BS_VolID; - } - *vsn = ld_dword(fs->win + di); - } - } - - LEAVE_FF(fs, res); -} - - - -#if !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Set Volume Label */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_setlabel ( - const TCHAR* label /* Volume label to set with heading logical drive number */ -) { - FRESULT res; - DIR dj; - FATFS *fs; - BYTE dirvn[22]; - UINT di; - WCHAR wc; - static const char badchr[] = "+.,;=[]\"*:<>\?|\x7F"; /* [0..] for FAT, [7..] for exFAT */ -#if FF_USE_LFN - DWORD dc; -#endif - - /* Get logical drive */ - res = find_volume(&label, &fs, FA_WRITE); - if (res != FR_OK) LEAVE_FF(fs, res); - -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ - mem_set(dirvn, 0, 22); - di = 0; - while (*label) { /* Create volume label in directory form */ - dc = tchar2uni(&label); /* Get a Unicode character */ - if (dc >= 0x10000) { - if (dc == 0xFFFFFFFF || di >= 10) { /* Wrong surrogate or buffer overflow */ - dc = 0; - } else { - st_word(dirvn + di * 2, (WCHAR)(dc >> 16)); di++; - } - } - if (dc == 0 || chk_chr(badchr + 7, (int)dc) || di >= 11) { /* Check validity of the volume label */ - LEAVE_FF(fs, FR_INVALID_NAME); - } - st_word(dirvn + di * 2, (WCHAR)dc); di++; - } - } else -#endif - { /* On the FAT/FAT32 volume */ - mem_set(dirvn, ' ', 11); - di = 0; - while (*label) { /* Create volume label in directory form */ -#if FF_USE_LFN - dc = tchar2uni(&label); - wc = (dc < 0x10000) ? ff_uni2oem(ff_wtoupper(dc), CODEPAGE) : 0; -#else /* ANSI/OEM input */ - wc = (BYTE)*label++; - if (dbc_1st((BYTE)wc)) wc = dbc_2nd((BYTE)*label) ? wc << 8 | (BYTE)*label++ : 0; - if (IsLower(wc)) wc -= 0x20; /* To upper ASCII characters */ -#if FF_CODE_PAGE == 0 - if (ExCvt && wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */ -#elif FF_CODE_PAGE < 900 - if (wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */ -#endif -#endif - if (wc == 0 || chk_chr(badchr + 0, (int)wc) || di >= (UINT)((wc >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */ - LEAVE_FF(fs, FR_INVALID_NAME); - } - if (wc >= 0x100) dirvn[di++] = (BYTE)(wc >> 8); - dirvn[di++] = (BYTE)wc; - } - if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */ - while (di && dirvn[di - 1] == ' ') di--; /* Snip trailing spaces */ - } - - /* Set volume label */ - dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */ - res = dir_sdi(&dj, 0); - if (res == FR_OK) { - res = dir_read_label(&dj); /* Get volume label entry */ - if (res == FR_OK) { - if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) { - dj.dir[XDIR_NumLabel] = (BYTE)di; /* Change the volume label */ - mem_cpy(dj.dir + XDIR_Label, dirvn, 22); - } else { - if (di != 0) { - mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */ - } else { - dj.dir[DIR_Name] = DDEM; /* Remove the volume label */ - } - } - fs->wflag = 1; - res = sync_fs(fs); - } else { /* No volume label entry or an error */ - if (res == FR_NO_FILE) { - res = FR_OK; - if (di != 0) { /* Create a volume label entry */ - res = dir_alloc(&dj, 1); /* Allocate an entry */ - if (res == FR_OK) { - mem_set(dj.dir, 0, SZDIRE); /* Clean the entry */ - if (FF_FS_EXFAT && fs->fs_type == FS_EXFAT) { - dj.dir[XDIR_Type] = 0x83; /* Create 83 entry */ - dj.dir[XDIR_NumLabel] = (BYTE)di; - mem_cpy(dj.dir + XDIR_Label, dirvn, 22); - } else { - dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */ - mem_cpy(dj.dir, dirvn, 11); - } - fs->wflag = 1; - res = sync_fs(fs); - } - } - } - } - } - - LEAVE_FF(fs, res); -} - -#endif /* !FF_FS_READONLY */ -#endif /* FF_USE_LABEL */ - - - -#if FF_USE_EXPAND && !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Allocate a Contiguous Blocks to the File */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_expand ( - FIL* fp, /* Pointer to the file object */ - FSIZE_t fsz, /* File size to be expanded to */ - BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */ -) { - FRESULT res; - FATFS *fs; - DWORD n, clst, stcl, scl, ncl, tcl, lclst; - - - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); - if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); -#if FF_FS_EXFAT - if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */ -#endif - n = (DWORD)fs->csize * SS(fs); /* Cluster size */ - tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */ - stcl = fs->last_clst; lclst = 0; - if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2; - -#if FF_FS_EXFAT - if (fs->fs_type == FS_EXFAT) { - scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */ - if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */ - if (scl == 0xFFFFFFFF) res = FR_DISK_ERR; - if (res == FR_OK) { /* A contiguous free area is found */ - if (opt) { /* Allocate it now */ - res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */ - lclst = scl + tcl - 1; - } else { /* Set it as suggested point for next allocation */ - lclst = scl - 1; - } - } - } else -#endif - { - scl = clst = stcl; ncl = 0; - for (;;) { /* Find a contiguous cluster block */ - n = get_fat(&fp->obj, clst); - if (++clst >= fs->n_fatent) clst = 2; - if (n == 1) { res = FR_INT_ERR; break; } - if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } - if (n == 0) { /* Is it a free cluster? */ - if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */ - } else { - scl = clst; ncl = 0; /* Not a free cluster */ - } - if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */ - } - if (res == FR_OK) { /* A contiguous free area is found */ - if (opt) { /* Allocate it now */ - for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */ - res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1); - if (res != FR_OK) break; - lclst = clst; - } - } else { /* Set it as suggested point for next allocation */ - lclst = scl - 1; - } - } - } - - if (res == FR_OK) { - fs->last_clst = lclst; /* Set suggested start cluster to start next */ - if (opt) { /* Is it allocated now? */ - fp->obj.sclust = scl; /* Update object allocation information */ - fp->obj.objsize = fsz; - if (FF_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */ - fp->flag |= FA_MODIFIED; - if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */ - fs->free_clst -= tcl; - fs->fsi_flag |= 1; - } - } - } - - LEAVE_FF(fs, res); -} - -#endif /* FF_USE_EXPAND && !FF_FS_READONLY */ - - - -#if FF_USE_FORWARD -/*-----------------------------------------------------------------------*/ -/* Forward Data to the Stream Directly */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_forward ( - FIL* fp, /* Pointer to the file object */ - UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ - UINT btf, /* Number of bytes to forward */ - UINT* bf /* Pointer to number of bytes forwarded */ -) { - FRESULT res; - FATFS *fs; - DWORD clst, sect; - FSIZE_t remain; - UINT rcnt, csect; - BYTE *dbuf; - - - *bf = 0; /* Clear transfer byte counter */ - res = validate(&fp->obj, &fs); /* Check validity of the file object */ - if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); - if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ - - remain = fp->obj.objsize - fp->fptr; - if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */ - - for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream goes busy */ - fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) { - csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */ - if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */ - if (csect == 0) { /* On the cluster boundary? */ - clst = (fp->fptr == 0) ? /* On the top of the file? */ - fp->obj.sclust : get_fat(&fp->obj, fp->clust); - if (clst <= 1) ABORT(fs, FR_INT_ERR); - if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); - fp->clust = clst; /* Update current cluster */ - } - } - sect = clst2sect(fs, fp->clust); /* Get current data sector */ - if (sect == 0) ABORT(fs, FR_INT_ERR); - sect += csect; -#if FF_FS_TINY - if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */ - dbuf = fs->win; -#else - if (fp->sect != sect) { /* Fill sector cache with file data */ -#if !FF_FS_READONLY - if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ - if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - fp->flag &= (BYTE)~FA_DIRTY; - } -#endif - if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); - } - dbuf = fp->buf; -#endif - fp->sect = sect; - rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ - if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */ - rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */ - if (rcnt == 0) ABORT(fs, FR_INT_ERR); - } - - LEAVE_FF(fs, FR_OK); -} -#endif /* FF_USE_FORWARD */ - - - -#if FF_USE_MKFS && !FF_FS_READONLY -/*-----------------------------------------------------------------------*/ -/* Create an FAT/exFAT volume */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_mkfs ( - const TCHAR* path, /* Logical drive number */ - BYTE opt, /* Format option */ - DWORD au, /* Size of allocation unit (cluster) [byte] */ - void* work, /* Pointer to working buffer (null: use heap memory) */ - UINT len /* Size of working buffer [byte] */ -) { - const UINT n_fats = 1; /* Number of FATs for FAT/FAT32 volume (1 or 2) */ - const UINT n_rootdir = 512; /* Number of root directory entries for FAT volume */ - static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT volume (4Ks unit) */ - static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */ - BYTE fmt, sys, *buf, *pte, pdrv, part; - WORD ss; /* Sector size */ - DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n; - DWORD b_vol, b_fat, b_data; /* Base LBA for volume, fat, data */ - DWORD sz_vol, sz_rsv, sz_fat, sz_dir; /* Size for volume, fat, dir, data */ - UINT i; - int vol; - DSTATUS stat; -#if FF_USE_TRIM || FF_FS_EXFAT - DWORD tbl[3]; -#endif - - - /* Check mounted drive and clear work area */ - vol = get_ldnumber(&path); /* Get target logical drive */ - if (vol < 0) return FR_INVALID_DRIVE; - if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear the volume if mounted */ - pdrv = LD2PD(vol); /* Physical drive */ - part = LD2PT(vol); /* Partition (0:create as new, 1-4:get from partition table) */ - - /* Check physical drive status */ - stat = disk_initialize(pdrv); - if (stat & STA_NOINIT) return FR_NOT_READY; - if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; - if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Erase block to align data area */ -#if FF_MAX_SS != FF_MIN_SS /* Get sector size of the medium if variable sector size cfg. */ - if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR; - if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR; -#else - ss = FF_MAX_SS; -#endif - if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */ - au /= ss; /* Cluster size in unit of sector */ - - /* Get working buffer */ -#if FF_USE_LFN == 3 - if (!work) { /* Use heap memory for working buffer */ - for (szb_buf = MAX_MALLOC, buf = 0; szb_buf >= ss && !(buf = ff_memalloc(szb_buf)); szb_buf /= 2) ; - sz_buf = szb_buf / ss; /* Size of working buffer (sector) */ - } else -#endif - { - buf = (BYTE*)work; /* Working buffer */ - sz_buf = len / ss; /* Size of working buffer (sector) */ - szb_buf = sz_buf * ss; /* Size of working buffer (byte) */ - } - if (!buf || sz_buf == 0) return FR_NOT_ENOUGH_CORE; - - /* Determine where the volume to be located (b_vol, sz_vol) */ - if (FF_MULTI_PARTITION && part != 0) { - /* Get partition information from partition table in the MBR */ - if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Load MBR */ - if (ld_word(buf + BS_55AA) != 0xAA55) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if MBR is valid */ - pte = buf + (MBR_Table + (part - 1) * SZ_PTE); - if (pte[PTE_System] == 0) LEAVE_MKFS(FR_MKFS_ABORTED); /* No partition? */ - b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */ - sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */ - } else { - /* Create a single-partition in this function */ - if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - b_vol = (opt & FM_SFD) ? 0 : 63; /* Volume start sector */ - if (sz_vol < b_vol) LEAVE_MKFS(FR_MKFS_ABORTED); - sz_vol -= b_vol; /* Volume size */ - } - if (sz_vol < 128) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if volume size is >=128s */ - - /* Pre-determine the FAT type */ - do { - if (FF_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */ - if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) { /* exFAT only, vol >= 64Ms or au > 128s ? */ - fmt = FS_EXFAT; break; - } - } - if (au > 128) LEAVE_MKFS(FR_INVALID_PARAMETER); /* Too large au for FAT/FAT32 */ - if (opt & FM_FAT32) { /* FAT32 possible? */ - if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) { /* FAT32 only or no-FAT? */ - fmt = FS_FAT32; break; - } - } - if (!(opt & FM_FAT)) LEAVE_MKFS(FR_INVALID_PARAMETER); /* no-FAT? */ - fmt = FS_FAT16; - } while (0); - -#if FF_FS_EXFAT - if (fmt == FS_EXFAT) { /* Create an exFAT volume */ - DWORD szb_bit, szb_case, sum, nb, cl; - WCHAR ch, si; - UINT j, st; - BYTE b; - - if (sz_vol < 0x1000) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume? */ -#if FF_USE_TRIM - tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area may be erased */ - disk_ioctl(pdrv, CTRL_TRIM, tbl); -#endif - /* Determine FAT location, data location and number of clusters */ - if (au == 0) { /* au auto-selection */ - au = 8; - if (sz_vol >= 0x80000) au = 64; /* >= 512Ks */ - if (sz_vol >= 0x4000000) au = 256; /* >= 64Ms */ - } - b_fat = b_vol + 32; /* FAT start at offset 32 */ - sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */ - b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */ - if (b_data >= sz_vol / 2) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume? */ - n_clst = (sz_vol - (b_data - b_vol)) / au; /* Number of clusters */ - if (n_clst <16) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too few clusters? */ - if (n_clst > MAX_EXFAT) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too many clusters? */ - - szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */ - tbl[0] = (szb_bit + au * ss - 1) / (au * ss); /* Number of allocation bitmap clusters */ - - /* Create a compressed up-case table */ - sect = b_data + au * tbl[0]; /* Table start sector */ - sum = 0; /* Table checksum to be stored in the 82 entry */ - st = si = i = j = szb_case = 0; - do { - switch (st) { - case 0: - ch = (WCHAR)ff_wtoupper(si); /* Get an up-case char */ - if (ch != si) { - si++; break; /* Store the up-case char if exist */ - } - for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */ - if (j >= 128) { - ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */ - } - st = 1; /* Do not compress short run */ - /* go to next case */ - case 1: - ch = si++; /* Fill the short run */ - if (--j == 0) st = 0; - break; - - default: - ch = (WCHAR)j; si += j; /* Number of chars to skip */ - st = 0; - } - sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */ - sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum); - i += 2; szb_case += 2; - if (si == 0 || i == szb_buf) { /* Write buffered data when buffer full or end of process */ - n = (i + ss - 1) / ss; - if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - sect += n; i = 0; - } - } while (si); - tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case table clusters */ - tbl[2] = 1; /* Number of root dir clusters */ - - /* Initialize the allocation bitmap */ - sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */ - nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */ - do { - mem_set(buf, 0, szb_buf); - for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ; - for (b = 1; nb != 0 && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ; - n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */ - if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - sect += n; nsect -= n; - } while (nsect); - - /* Initialize the FAT */ - sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */ - j = nb = cl = 0; - do { - mem_set(buf, 0, szb_buf); i = 0; /* Clear work area and reset write index */ - if (cl == 0) { /* Set entry 0 and 1 */ - st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++; - st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++; - } - do { /* Create chains of bitmap, up-case and root dir */ - while (nb != 0 && i < szb_buf) { /* Create a chain */ - st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF); - i += 4; cl++; nb--; - } - if (nb == 0 && j < 3) nb = tbl[j++]; /* Next chain */ - } while (nb != 0 && i < szb_buf); - n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */ - if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - sect += n; nsect -= n; - } while (nsect); - - /* Initialize the root directory */ - mem_set(buf, 0, szb_buf); - buf[SZDIRE * 0 + 0] = 0x83; /* 83 entry (volume label) */ - buf[SZDIRE * 1 + 0] = 0x81; /* 81 entry (allocation bitmap) */ - st_dword(buf + SZDIRE * 1 + 20, 2); - st_dword(buf + SZDIRE * 1 + 24, szb_bit); - buf[SZDIRE * 2 + 0] = 0x82; /* 82 entry (up-case table) */ - st_dword(buf + SZDIRE * 2 + 4, sum); - st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]); - st_dword(buf + SZDIRE * 2 + 24, szb_case); - sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */ - do { /* Fill root directory sectors */ - n = (nsect > sz_buf) ? sz_buf : nsect; - if (disk_write(pdrv, buf, sect, n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - mem_set(buf, 0, ss); - sect += n; nsect -= n; - } while (nsect); - - /* Create two set of the exFAT VBR blocks */ - sect = b_vol; - for (n = 0; n < 2; n++) { - /* Main record (+0) */ - mem_set(buf, 0, ss); - mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */ - st_dword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */ - st_dword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */ - st_dword(buf + BPB_FatOfsEx, b_fat - b_vol); /* FAT offset [sector] */ - st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */ - st_dword(buf + BPB_DataOfsEx, b_data - b_vol); /* Data offset [sector] */ - st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */ - st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */ - st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */ - st_word(buf + BPB_FSVerEx, 0x100); /* Filesystem version (1.00) */ - for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */ - for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */ - buf[BPB_NumFATsEx] = 1; /* Number of FATs */ - buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */ - st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */ - st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */ - for (i = sum = 0; i < ss; i++) { /* VBR checksum */ - if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum); - } - if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - /* Extended bootstrap record (+1..+8) */ - mem_set(buf, 0, ss); - st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */ - for (j = 1; j < 9; j++) { - for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */ - if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - } - /* OEM/Reserved record (+9..+10) */ - mem_set(buf, 0, ss); - for ( ; j < 11; j++) { - for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */ - if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - } - /* Sum record (+11) */ - for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */ - if (disk_write(pdrv, buf, sect++, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - } - - } else -#endif /* FF_FS_EXFAT */ - { /* Create an FAT/FAT32 volume */ - do { - pau = au; - /* Pre-determine number of clusters and FAT sub-type */ - if (fmt == FS_FAT32) { /* FAT32 volume */ - if (pau == 0) { /* au auto-selection */ - n = sz_vol / 0x20000; /* Volume size in unit of 128KS */ - for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */ - } - n_clst = sz_vol / pau; /* Number of clusters */ - sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */ - sz_rsv = 32; /* Number of reserved sectors */ - sz_dir = 0; /* No static directory */ - if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) LEAVE_MKFS(FR_MKFS_ABORTED); - } else { /* FAT volume */ - if (pau == 0) { /* au auto-selection */ - n = sz_vol / 0x1000; /* Volume size in unit of 4KS */ - for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */ - } - n_clst = sz_vol / pau; - if (n_clst > MAX_FAT12) { - n = n_clst * 2 + 4; /* FAT size [byte] */ - } else { - fmt = FS_FAT12; - n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */ - } - sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */ - sz_rsv = 1; /* Number of reserved sectors */ - sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */ - } - b_fat = b_vol + sz_rsv; /* FAT base */ - b_data = b_fat + sz_fat * n_fats + sz_dir; /* Data base */ - - /* Align data base to erase block boundary (for flash memory media) */ - n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data; /* Next nearest erase block from current data base */ - if (fmt == FS_FAT32) { /* FAT32: Move FAT base */ - sz_rsv += n; b_fat += n; - } else { /* FAT: Expand FAT size */ - sz_fat += n / n_fats; - } - - /* Determine number of clusters and final check of validity of the FAT sub-type */ - if (sz_vol < b_data + pau * 16 - b_vol) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too small volume */ - n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau; - if (fmt == FS_FAT32) { - if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32 */ - if (au == 0 && (au = pau / 2) != 0) continue; /* Adjust cluster size and retry */ - LEAVE_MKFS(FR_MKFS_ABORTED); - } - } - if (fmt == FS_FAT16) { - if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */ - if (au == 0 && (pau * 2) <= 64) { - au = pau * 2; continue; /* Adjust cluster size and retry */ - } - if ((opt & FM_FAT32)) { - fmt = FS_FAT32; continue; /* Switch type to FAT32 and retry */ - } - if (au == 0 && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */ - LEAVE_MKFS(FR_MKFS_ABORTED); - } - if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */ - if (au == 0 && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */ - LEAVE_MKFS(FR_MKFS_ABORTED); - } - } - if (fmt == FS_FAT12 && n_clst > MAX_FAT12) LEAVE_MKFS(FR_MKFS_ABORTED); /* Too many clusters for FAT12 */ - - /* Ok, it is the valid cluster configuration */ - break; - } while (1); - -#if FF_USE_TRIM - tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */ - disk_ioctl(pdrv, CTRL_TRIM, tbl); -#endif - /* Create FAT VBR */ - mem_set(buf, 0, ss); - mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */ - st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */ - buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */ - st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */ - buf[BPB_NumFATs] = (BYTE)n_fats; /* Number of FATs */ - st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir)); /* Number of root directory entries */ - if (sz_vol < 0x10000) { - st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */ - } else { - st_dword(buf + BPB_TotSec32, sz_vol); /* Volume size in 32-bit LBA */ - } - buf[BPB_Media] = 0xF8; /* Media descriptor byte */ - st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */ - st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */ - st_dword(buf + BPB_HiddSec, b_vol); /* Volume offset in the physical drive [sector] */ - if (fmt == FS_FAT32) { - st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */ - st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */ - st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */ - st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */ - st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */ - buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */ - buf[BS_BootSig32] = 0x29; /* Extended boot signature */ - mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */ - } else { - st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */ - st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */ - buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */ - buf[BS_BootSig] = 0x29; /* Extended boot signature */ - mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */ - } - st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */ - if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Write it to the VBR sector */ - - /* Create FSINFO record if needed */ - if (fmt == FS_FAT32) { - disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */ - mem_set(buf, 0, ss); - st_dword(buf + FSI_LeadSig, 0x41615252); - st_dword(buf + FSI_StrucSig, 0x61417272); - st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */ - st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */ - st_word(buf + BS_55AA, 0xAA55); - disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */ - disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */ - } - - /* Initialize FAT area */ - mem_set(buf, 0, (UINT)szb_buf); - sect = b_fat; /* FAT start sector */ - for (i = 0; i < n_fats; i++) { /* Initialize FATs each */ - if (fmt == FS_FAT32) { - st_dword(buf + 0, 0xFFFFFFF8); /* Entry 0 */ - st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */ - st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */ - } else { - st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */ - } - nsect = sz_fat; /* Number of FAT sectors */ - do { /* Fill FAT sectors */ - n = (nsect > sz_buf) ? sz_buf : nsect; - if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - mem_set(buf, 0, ss); - sect += n; nsect -= n; - } while (nsect); - } - - /* Initialize root directory (fill with zero) */ - nsect = (fmt == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */ - do { - n = (nsect > sz_buf) ? sz_buf : nsect; - if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - sect += n; nsect -= n; - } while (nsect); - } - - /* Determine system ID in the partition table */ - if (FF_FS_EXFAT && fmt == FS_EXFAT) { - sys = 0x07; /* HPFS/NTFS/exFAT */ - } else { - if (fmt == FS_FAT32) { - sys = 0x0C; /* FAT32X */ - } else { - if (sz_vol >= 0x10000) { - sys = 0x06; /* FAT12/16 (large) */ - } else { - sys = (fmt == FS_FAT16) ? 0x04 : 0x01; /* FAT16 : FAT12 */ - } - } - } - - /* Update partition information */ - if (FF_MULTI_PARTITION && part != 0) { /* Created in the existing partition */ - /* Update system ID in the partition table */ - if (disk_read(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Read the MBR */ - buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys; /* Set system ID */ - if (disk_write(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Write it back to the MBR */ - } else { /* Created as a new single partition */ - if (!(opt & FM_SFD)) { /* Create partition table if in FDISK format */ - mem_set(buf, 0, ss); - st_word(buf + BS_55AA, 0xAA55); /* MBR signature */ - pte = buf + MBR_Table; /* Create partition table for single partition in the drive */ - pte[PTE_Boot] = 0; /* Boot indicator */ - pte[PTE_StHead] = 1; /* Start head */ - pte[PTE_StSec] = 1; /* Start sector */ - pte[PTE_StCyl] = 0; /* Start cylinder */ - pte[PTE_System] = sys; /* System type */ - n = (b_vol + sz_vol) / (63 * 255); /* (End CHS may be invalid) */ - pte[PTE_EdHead] = 254; /* End head */ - pte[PTE_EdSec] = (BYTE)(((n >> 2) & 0xC0) | 63); /* End sector */ - pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */ - st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */ - st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */ - if (disk_write(pdrv, buf, 0, 1) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); /* Write it to the MBR */ - } - } - - if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) LEAVE_MKFS(FR_DISK_ERR); - - LEAVE_MKFS(FR_OK); -} - - - -#if FF_MULTI_PARTITION -/*-----------------------------------------------------------------------*/ -/* Create Partition Table on the Physical Drive */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_fdisk ( - BYTE pdrv, /* Physical drive number */ - const DWORD* szt, /* Pointer to the size table for each partitions */ - void* work /* Pointer to the working buffer (null: use heap memory) */ -) { - UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl; - BYTE s_hd, e_hd, *p, *buf; = (BYTE*)work; - DSTATUS stat; - DWORD sz_disk, sz_part, s_part; - FRESULT res; - - - stat = disk_initialize(pdrv); - if (stat & STA_NOINIT) return FR_NOT_READY; - if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; - if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR; - - buf = (BYTE*)work; -#if FF_USE_LFN == 3 - if (!buf) buf = ff_memalloc(FF_MAX_SS); /* Use heap memory for working buffer */ -#endif - if (!buf) return FR_NOT_ENOUGH_CORE; - - /* Determine the CHS without any consideration of the drive geometry */ - for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ; - if (n == 256) n--; - e_hd = n - 1; - sz_cyl = 63 * n; - tot_cyl = sz_disk / sz_cyl; - - /* Create partition table */ - mem_set(buf, 0, FF_MAX_SS); - p = buf + MBR_Table; b_cyl = 0; - for (i = 0; i < 4; i++, p += SZ_PTE) { - p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl; /* Number of cylinders */ - if (p_cyl == 0) continue; - s_part = (DWORD)sz_cyl * b_cyl; - sz_part = (DWORD)sz_cyl * p_cyl; - if (i == 0) { /* Exclude first track of cylinder 0 */ - s_hd = 1; - s_part += 63; sz_part -= 63; - } else { - s_hd = 0; - } - e_cyl = b_cyl + p_cyl - 1; /* End cylinder */ - if (e_cyl >= tot_cyl) LEAVE_MKFS(FR_INVALID_PARAMETER); - - /* Set partition table */ - p[1] = s_hd; /* Start head */ - p[2] = (BYTE)(((b_cyl >> 2) & 0xC0) | 1); /* Start sector */ - p[3] = (BYTE)b_cyl; /* Start cylinder */ - p[4] = 0x07; /* System type (temporary setting) */ - p[5] = e_hd; /* End head */ - p[6] = (BYTE)(((e_cyl >> 2) & 0xC0) | 63); /* End sector */ - p[7] = (BYTE)e_cyl; /* End cylinder */ - st_dword(p + 8, s_part); /* Start sector in LBA */ - st_dword(p + 12, sz_part); /* Number of sectors */ - - /* Next partition */ - b_cyl += p_cyl; - } - st_word(p, 0xAA55); /* MBR signature (always at offset 510) */ - - /* Write it to the MBR */ - res = (disk_write(pdrv, buf, 0, 1) == RES_OK && disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR; - LEAVE_MKFS(res); -} - -#endif /* FF_MULTI_PARTITION */ -#endif /* FF_USE_MKFS && !FF_FS_READONLY */ - - - - -#if FF_USE_STRFUNC -#if FF_USE_LFN && FF_LFN_UNICODE && (FF_STRF_ENCODE < 0 || FF_STRF_ENCODE > 3) -#error Wrong FF_STRF_ENCODE setting -#endif -/*-----------------------------------------------------------------------*/ -/* Get a String from the File */ -/*-----------------------------------------------------------------------*/ - -TCHAR* f_gets ( - TCHAR* buff, /* Pointer to the string buffer to read */ - int len, /* Size of string buffer (items) */ - FIL* fp /* Pointer to the file object */ -) { - int nc = 0; - TCHAR *p = buff; - BYTE s[2]; - UINT rc; - WCHAR wc; -#if FF_USE_LFN && ((FF_LFN_UNICODE == 1 && FF_STRF_ENCODE == 3) || (FF_LFN_UNICODE == 2 && FF_STRF_ENCODE != 3)) - DWORD dc; -#endif -#if FF_USE_LFN && FF_LFN_UNICODE == 1 && FF_STRF_ENCODE == 3 - UINT ct; -#endif - -#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* UTF-16 output */ -#if FF_STRF_ENCODE == 0 /* Read a character in ANSI/OEM */ - while (nc < len - 1) { - f_read(fp, s, 1, &rc); - if (rc != 1) break; - wc = s[0]; - if (dbc_1st((BYTE)wc)) { - f_read(fp, s, 1, &rc); - if (rc != 1 || !dbc_2nd(s[0])) continue; - wc = wc << 8 | s[0]; - } - wc = ff_oem2uni(wc, CODEPAGE); - if (wc == 0) continue; -#elif FF_STRF_ENCODE == 1 || FF_STRF_ENCODE == 2 /* Read a character in UTF-16LE/BE */ - while (nc < len - 1) { - f_read(fp, s, 2, &rc); - if (rc != 2) break; - wc = (FF_STRF_ENCODE == 1) ? s[1] << 8 | s[0] : s[0] << 8 | s[1]; -#elif FF_STRF_ENCODE == 3 /* Read a character in UTF-8 */ - while (nc < len - 2) { - f_read(fp, s, 1, &rc); - if (rc != 1) break; - dc = s[0]; - if (dc >= 0x80) { - ct = 0; - if ((dc & 0xE0) == 0xC0) { dc &= 0x1F; ct = 1; } - if ((dc & 0xF0) == 0xE0) { dc &= 0x0F; ct = 2; } - if ((dc & 0xF8) == 0xF0) { dc &= 0x07; ct = 3; } - if (ct == 0) continue; - do { - f_read(fp, s, 1, &rc); - if (rc != 1 || (s[0] & 0xC0) != 0x80) break; - dc = dc << 6 | (s[0] & 0x3F); - } while (--ct); - if (ct || dc < 0x80 || dc >= 0x110000) continue; - } - if (dc >= 0x10000) { - wc = (WCHAR)(0xD800 | ((dc >> 10) - 0x40)); - *p++ = wc; nc++; - wc = (WCHAR)(0xDC00 | (dc & 0x3FF)); - } else { - wc = (WCHAR)dc; - } -#endif - /* Output it in UTF-16 encoding */ - if (FF_USE_STRFUNC == 2 && wc == '\r') continue; - *p++ = wc; nc++; - if (wc == '\n') break; - } - -#elif FF_USE_LFN && FF_LFN_UNICODE == 2 && FF_STRF_ENCODE != 3 /* UTF-8 output */ - while (nc < len - 4) { -#if FF_STRF_ENCODE == 0 /* Read a character in ANSI/OEM */ - f_read(fp, s, 1, &rc); - if (rc != 1) break; - wc = s[0]; - if (dbc_1st((BYTE)wc)) { - f_read(fp, s, 1, &rc); - if (rc != 1 || !dbc_2nd(s[0])) continue; - wc = wc << 8 | s[0]; - } - dc = ff_oem2uni(wc, CODEPAGE); - if (dc == 0) continue; -#else /* Read a character in UTF-16LE/BE */ - f_read(fp, s, 2, &rc); - if (rc != 2) break; - dc = (FF_STRF_ENCODE == 1) ? s[1] << 8 | s[0] : s[0] << 8 | s[1]; - if (IsSurrogate(dc)) { - f_read(fp, s, 2, &rc); - if (rc != 2) break; - wc = (FF_STRF_ENCODE == 1) ? s[1] << 8 | s[0] : s[0] << 8 | s[1]; - if (!IsSurrogateH(dc) || !IsSurrogateL(wc)) continue; - dc = ((dc & 0x3FF) + 0x40) << 10 | (wc & 0x3FF); - } -#endif - /* Output it in UTF-8 encoding */ - if (FF_USE_STRFUNC == 2 && dc == '\r') continue; - if (dc < 0x80) { /* 1-byte */ - *p++ = (TCHAR)dc; - nc++; - if (dc == '\n') break; - } else { - if (dc < 0x800) { /* 2-byte */ - *p++ = (TCHAR)(0xC0 | (dc >> 6 & 0x1F)); - *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F)); - nc += 2; - } else { - if (dc < 0x10000) { /* 3-byte */ - *p++ = (TCHAR)(0xE0 | (dc >> 12 & 0x0F)); - *p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F)); - *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F)); - nc += 3; - } else { /* 4-byte */ - *p++ = (TCHAR)(0xF0 | (dc >> 18 & 0x07)); - *p++ = (TCHAR)(0x80 | (dc >> 12 & 0x3F)); - *p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F)); - *p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F)); - nc += 4; - } - } - } - } - -#else /* Byte-by-byte without any conversion (ANSI/OEM API or UTF-8 to UTF-8) */ - while (nc < len - 1) { - f_read(fp, s, 1, &rc); - if (rc != 1) break; - wc = s[0]; - if (FF_USE_STRFUNC == 2 && wc == '\r') continue; - *p++ = (TCHAR)wc; nc++; - if (wc == '\n') break; - } -#endif - - *p = 0; - return nc ? buff : 0; /* When no data read (EOF or error), return with error. */ -} - - - - -#if !FF_FS_READONLY -#include <stdarg.h> -/*-----------------------------------------------------------------------*/ -/* Put a Character to the File */ -/*-----------------------------------------------------------------------*/ - -typedef struct { /* Putchar output buffer and work area */ - FIL *fp; /* Ptr to the writing file */ - int idx, nchr; /* Write index of buf[] (-1:error), number of encoding units written */ -#if FF_USE_LFN && FF_LFN_UNICODE == 1 - WCHAR hs; -#elif FF_USE_LFN && FF_LFN_UNICODE == 2 - BYTE bs[4]; - UINT wi, ct; -#endif - BYTE buf[64]; /* Write buffer */ -} putbuff; - - -static -void putc_bfd ( /* Buffered write with code conversion */ - putbuff* pb, - TCHAR c -) { - UINT n; - int i, nc; -#if FF_USE_LFN && (FF_LFN_UNICODE == 1 || (FF_LFN_UNICODE == 2 && (FF_STRF_ENCODE != 3))) - WCHAR hs, wc; -#endif -#if FF_USE_LFN && FF_LFN_UNICODE == 2 && FF_STRF_ENCODE != 3 - DWORD dc; - TCHAR *tp; -#endif - - if (FF_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */ - putc_bfd(pb, '\r'); - } - - i = pb->idx; /* Write index of pb->buf[] */ - if (i < 0) return; - nc = pb->nchr; /* Write unit count */ - -#if FF_USE_LFN && FF_LFN_UNICODE >= 1 -#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* UTF-16 input */ - if (IsSurrogateH(c)) { - pb->hs = c; return; - } - wc = c; hs = pb->hs; pb->hs = 0; - if (hs != 0) { - if (!IsSurrogateL(wc)) hs = 0; - } else { - if (IsSurrogateL(wc)) return; - } -#if FF_STRF_ENCODE == 3 /* Write it in UTF-8 */ - if (hs != 0) { /* 4-byte */ - nc += 4; - hs = (hs & 0x3FF) + 0x40; - pb->buf[i++] = (BYTE)(0xF0 | hs >> 8); - pb->buf[i++] = (BYTE)(0x80 | (hs >> 2 & 0x3F)); - pb->buf[i++] = (BYTE)(0x80 | (hs & 3) << 4 | (wc >> 6 & 0x0F)); - pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F)); - } else { - if (wc < 0x80) { /* 1-byte */ - nc++; - pb->buf[i++] = (BYTE)wc; - } else { - if (wc < 0x800) { /* 2-byte */ - nc += 2; - pb->buf[i++] = (BYTE)(0xC0 | wc >> 6); - } else { /* 3-byte */ - nc += 3; - pb->buf[i++] = (BYTE)(0xE0 | wc >> 12); - pb->buf[i++] = (BYTE)(0x80 | (wc >> 6 & 0x3F)); - } - pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F)); - } - } -#endif -#else /* UTF-8 input */ - for (;;) { - if (pb->ct == 0) { /* Out of multi-byte sequence? */ - pb->bs[pb->wi = 0] = (BYTE)c; /* Save 1st byte */ - if ((BYTE)c < 0x80) break; /* 1-byte? */ - if (((BYTE)c & 0xE0) == 0xC0) pb->ct = 1; /* 2-byte? */ - if (((BYTE)c & 0xF0) == 0xE0) pb->ct = 2; /* 3-byte? */ - if (((BYTE)c & 0xF1) == 0xF0) pb->ct = 3; /* 4-byte? */ - return; - } else { /* In the multi-byte sequence */ - if (((BYTE)c & 0xC0) != 0x80) { /* Broken sequence? */ - pb->ct = 0; continue; - } - pb->bs[++pb->wi] = (BYTE)c; /* Save the trailing byte */ - if (--pb->ct == 0) break; /* End of sequence? */ - return; - } - } -#if FF_STRF_ENCODE == 3 /* Write it in UTF-8 */ - pb->buf[i++] = pb->bs[0]; nc++; - if (pb->bs[0] >= 0xC0) { - pb->buf[i++] = pb->bs[1]; nc++; - } - if (pb->bs[0] >= 0xE0) { - pb->buf[i++] = pb->bs[2]; nc++; - } - if (pb->bs[0] >= 0xF0) { - pb->buf[i++] = pb->bs[3]; nc++; - } -#else /* Write it in UTF-16 or ANSI/OEM */ - tp = (TCHAR*)pb->bs; - dc = tchar2uni(&tp); /* UTF-8 ==> UTF-16 */ - if (dc == 0xFFFFFFFF) return; - wc = (WCHAR)dc; - hs = (WCHAR)(dc >> 16); -#endif -#endif -#if FF_USE_LFN && FF_LFN_UNICODE >= 1 && FF_STRF_ENCODE != 3 -#if FF_STRF_ENCODE == 2 /* Write a character in UTF-16BE */ - if (hs != 0) { - pb->buf[i++] = (BYTE)(hs >> 8); - pb->buf[i++] = (BYTE)hs; - nc++; - } - pb->buf[i++] = (BYTE)(wc >> 8); - pb->buf[i++] = (BYTE)wc; - nc++; -#elif FF_STRF_ENCODE == 1 /* Write a character in UTF-16LE */ - if (hs != 0) { - pb->buf[i++] = (BYTE)hs; - pb->buf[i++] = (BYTE)(hs >> 8); - nc++; - } - pb->buf[i++] = (BYTE)wc; - pb->buf[i++] = (BYTE)(wc >> 8); - nc++; -#else /* Write a character in ANSI/OEM */ - if (hs != 0) return; - wc = ff_uni2oem(wc, CODEPAGE); /* UTF-16 ==> ANSI/OEM */ - if (wc == 0) return;; - if (wc >= 0x100) { - pb->buf[i++] = (BYTE)(wc >> 8); nc++; - } - pb->buf[i++] = (BYTE)wc; nc++; -#endif -#endif - -#else /* ANSI/OEM input */ - pb->buf[i++] = (BYTE)c; - nc++; -#endif - - if (i >= (int)(sizeof pb->buf) - 4) { /* Write buffered characters to the file */ - f_write(pb->fp, pb->buf, (UINT)i, &n); - i = (n == (UINT)i) ? 0 : -1; - } - pb->idx = i; - pb->nchr = nc; -} - - -static -int putc_flush ( /* Flush left characters in the buffer */ - putbuff* pb -) { - UINT nw; - - if ( pb->idx >= 0 /* Flush buffered characters to the file */ - && f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK - && (UINT)pb->idx == nw) return pb->nchr; - return EOF; -} - - -static -void putc_init ( /* Initialize write buffer */ - putbuff* pb, - FIL* fp -) { - mem_set(pb, 0, sizeof (putbuff)); - pb->fp = fp; -} - - - -int f_putc ( - TCHAR c, /* A character to be output */ - FIL* fp /* Pointer to the file object */ -) { - putbuff pb; - - - putc_init(&pb, fp); - putc_bfd(&pb, c); /* Put the character */ - return putc_flush(&pb); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Put a String to the File */ -/*-----------------------------------------------------------------------*/ - -int f_puts ( - const TCHAR* str, /* Pointer to the string to be output */ - FIL* fp /* Pointer to the file object */ -) { - putbuff pb; - - - putc_init(&pb, fp); - while (*str) putc_bfd(&pb, *str++); /* Put the string */ - return putc_flush(&pb); -} - - - - -/*-----------------------------------------------------------------------*/ -/* Put a Formatted String to the File */ -/*-----------------------------------------------------------------------*/ - -int f_printf ( - FIL* fp, /* Pointer to the file object */ - const TCHAR* fmt, /* Pointer to the format string */ - ... /* Optional arguments... */ -) { - va_list arp; - putbuff pb; - BYTE f, r; - UINT i, j, w; - DWORD v; - TCHAR c, d, str[32], *p; - - - putc_init(&pb, fp); - - va_start(arp, fmt); - - for (;;) { - c = *fmt++; - if (c == 0) break; /* End of string */ - if (c != '%') { /* Non escape character */ - putc_bfd(&pb, c); - continue; - } - w = f = 0; - c = *fmt++; - if (c == '0') { /* Flag: '0' padding */ - f = 1; c = *fmt++; - } else { - if (c == '-') { /* Flag: left justified */ - f = 2; c = *fmt++; - } - } - if (c == '*') { /* Minimum width by argument */ - w = va_arg(arp, int); - c = *fmt++; - } else { - while (IsDigit(c)) { /* Minimum width */ - w = w * 10 + c - '0'; - c = *fmt++; - } - } - if (c == 'l' || c == 'L') { /* Type prefix: Size is long int */ - f |= 4; c = *fmt++; - } - if (c == 0) break; - d = c; - if (IsLower(d)) d -= 0x20; - switch (d) { /* Atgument type is... */ - case 'S' : /* String */ - p = va_arg(arp, TCHAR*); - for (j = 0; p[j]; j++) ; - if (!(f & 2)) { /* Right padded */ - while (j++ < w) putc_bfd(&pb, ' ') ; - } - while (*p) putc_bfd(&pb, *p++) ; /* String body */ - while (j++ < w) putc_bfd(&pb, ' ') ; /* Left padded */ - continue; - - case 'C' : /* Character */ - putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue; - - case 'B' : /* Unsigned binary */ - r = 2; break; - - case 'O' : /* Unsigned octal */ - r = 8; break; - - case 'D' : /* Signed decimal */ - case 'U' : /* Unsigned decimal */ - r = 10; break; - - case 'X' : /* Unsigned hexdecimal */ - r = 16; break; - - default: /* Unknown type (pass-through) */ - putc_bfd(&pb, c); continue; - } - - /* Get an argument and put it in numeral */ - v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int)); - if (d == 'D' && (v & 0x80000000)) { - v = 0 - v; - f |= 8; - } - i = 0; - do { - d = (TCHAR)(v % r); v /= r; - if (d > 9) d += (c == 'x') ? 0x27 : 0x07; - str[i++] = d + '0'; - } while (v && i < sizeof str / sizeof *str); - if (f & 8) str[i++] = '-'; - j = i; d = (f & 1) ? '0' : ' '; - if (!(f & 2)) { - while (j++ < w) putc_bfd(&pb, d); /* Right pad */ - } - do { - putc_bfd(&pb, str[--i]); /* Number body */ - } while (i); - while (j++ < w) putc_bfd(&pb, d); /* Left pad */ - } - - va_end(arp); - - return putc_flush(&pb); -} - -#endif /* !FF_FS_READONLY */ -#endif /* FF_USE_STRFUNC */ - - - -#if FF_CODE_PAGE == 0 -/*-----------------------------------------------------------------------*/ -/* Set Active Codepage for the Path Name */ -/*-----------------------------------------------------------------------*/ - -FRESULT f_setcp ( - WORD cp /* Value to be set as active code page */ -) { - static const WORD validcp[] = { 437, 720, 737, 771, 775, 850, 852, 857, 860, 861, 862, 863, 864, 865, 866, 869, 932, 936, 949, 950, 0}; - static const BYTE *const tables[] = {Ct437, Ct720, Ct737, Ct771, Ct775, Ct850, Ct852, Ct857, Ct860, Ct861, Ct862, Ct863, Ct864, Ct865, Ct866, Ct869, Dc932, Dc936, Dc949, Dc950, 0}; - UINT i; - - - for (i = 0; validcp[i] != 0 && validcp[i] != cp; i++) ; /* Find the code page */ - if (validcp[i] != cp) return FR_INVALID_PARAMETER; /* Not found? */ - - CodePage = cp; - if (cp >= 900) { /* DBCS */ - ExCvt = 0; - DbcTbl = tables[i]; - } else { /* SBCS */ - ExCvt = tables[i]; - DbcTbl = 0; - } - return FR_OK; -} -#endif /* FF_CODE_PAGE == 0 */ - |