You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
3627 lines
131 KiB
3627 lines
131 KiB
// clang-format off
|
|
|
|
/*----------------------------------------------------------------------------/
|
|
/ FatFs - Generic FAT Filesystem Module R0.14 /
|
|
/-----------------------------------------------------------------------------/
|
|
/
|
|
/ Copyright (C) 2019, 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 "ff.h" /* Declarations of FatFs API */
|
|
#include "diskio.h" /* Declarations of device I/O functions */
|
|
|
|
|
|
/*--------------------------------------------------------------------------
|
|
|
|
Module Private Definitions
|
|
|
|
---------------------------------------------------------------------------*/
|
|
|
|
#if FF_DEFINED != 86606 /* Revision ID */
|
|
#error Wrong include file (ff.h).
|
|
#endif
|
|
|
|
|
|
/* 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) */
|
|
|
|
|
|
/* 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 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 */
|
|
|
|
|
|
/* 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 */
|
|
|
|
|
|
/* 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 */
|
|
|
|
|
|
/* exFAT directory entry types */
|
|
#define ET_BITMAP 0x81 /* Allocation bitmap */
|
|
#define ET_UPCASE 0x82 /* Up-case table */
|
|
#define ET_VLABEL 0x83 /* Volume label */
|
|
#define ET_FILEDIR 0x85 /* File and directory */
|
|
#define ET_STREAM 0xC0 /* Stream extension */
|
|
#define ET_FILENAME 0xC1 /* Name extension */
|
|
|
|
|
|
/* 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 */
|
|
|
|
#define GPTH_Sign 0 /* GPT: Header signature (8-byte) */
|
|
#define GPTH_Rev 8 /* GPT: Revision (DWORD) */
|
|
#define GPTH_Size 12 /* GPT: Header size (DWORD) */
|
|
#define GPTH_Bcc 16 /* GPT: Header BCC (DWORD) */
|
|
#define GPTH_CurLba 24 /* GPT: Main header LBA (QWORD) */
|
|
#define GPTH_BakLba 32 /* GPT: Backup header LBA (QWORD) */
|
|
#define GPTH_FstLba 40 /* GPT: First LBA for partitions (QWORD) */
|
|
#define GPTH_LstLba 48 /* GPT: Last LBA for partitions (QWORD) */
|
|
#define GPTH_DskGuid 56 /* GPT: Disk GUID (16-byte) */
|
|
#define GPTH_PtOfs 72 /* GPT: Partation table LBA (QWORD) */
|
|
#define GPTH_PtNum 80 /* GPT: Number of table entries (DWORD) */
|
|
#define GPTH_PteSize 84 /* GPT: Size of table entry (DWORD) */
|
|
#define GPTH_PtBcc 88 /* GPT: Partation table BCC (DWORD) */
|
|
#define SZ_GPTE 128 /* GPT: Size of partition table entry */
|
|
#define GPTE_PtGuid 0 /* GPT PTE: Partition type GUID (16-byte) */
|
|
#define GPTE_UpGuid 16 /* GPT PTE: Partition unique GUID (16-byte) */
|
|
#define GPTE_FstLba 32 /* GPT PTE: First LBA (QWORD) */
|
|
#define GPTE_LstLba 40 /* GPT PTE: Last LBA inclusive (QWORD) */
|
|
#define GPTE_Flags 48 /* GPT PTE: Flags (QWORD) */
|
|
#define GPTE_Name 56 /* GPT PTE: Name */
|
|
|
|
|
|
/* Post process on fatal error in the file operations */
|
|
#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
|
|
|
|
|
|
/* Re-entrancy related */
|
|
#define LEAVE_FF(fs, res) return res
|
|
|
|
|
|
/* Definitions of logical drive - physical location conversion */
|
|
#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is associated with the same physical drive number */
|
|
#define LD2PT(vol) 0 /* Find first valid partition or in SFD */
|
|
|
|
|
|
/* 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_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)
|
|
|
|
|
|
/* File lock controls */
|
|
|
|
|
|
/* 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 */
|
|
/*--------------------------------*/
|
|
|
|
static FATFS* FatFs[FF_VOLUMES]; /* Pointer to the filesystem objects (logical drives) */
|
|
static WORD Fsid; /* Filesystem mount ID */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*--------------------------------*/
|
|
/* LFN/Directory working buffer */
|
|
/*--------------------------------*/
|
|
|
|
#if FF_MAX_LFN < 12 || FF_MAX_LFN > 255
|
|
#error Wrong setting of FF_MAX_LFN
|
|
#endif
|
|
#if FF_LFN_BUF < FF_SFN_BUF || FF_SFN_BUF < 12
|
|
#error Wrong setting of FF_LFN_BUF or FF_SFN_BUF
|
|
#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 */
|
|
|
|
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
|
|
|
|
|
|
|
|
|
|
/*--------------------------------*/
|
|
/* Code conversion tables */
|
|
/*--------------------------------*/
|
|
|
|
#define CODEPAGE FF_CODE_PAGE
|
|
static const BYTE ExCvt[] = MKCVTBL(TBL_CT, FF_CODE_PAGE);
|
|
|
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------------------
|
|
|
|
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 = 0;
|
|
|
|
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 = 0;
|
|
|
|
rv = ptr[3];
|
|
rv = rv << 8 | ptr[2];
|
|
rv = rv << 8 | ptr[1];
|
|
rv = rv << 8 | ptr[0];
|
|
return rv;
|
|
}
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* String functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#include <string.h>
|
|
|
|
// These were originally provided by the FatFs library but we use externally
|
|
// provided versions from C stdlib to (hopefully) reduce code size and use
|
|
// more efficient versions.
|
|
#define mem_cpy memcpy
|
|
#define mem_set memset
|
|
#define mem_cmp memcmp
|
|
|
|
/* 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 byte is DBC 1st byte */
|
|
static int dbc_1st (BYTE c)
|
|
{
|
|
if (c != 0) return 0; /* Always false */
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Test if the byte is DBC 2nd byte */
|
|
static int dbc_2nd (BYTE c)
|
|
{
|
|
if (c != 0) return 0; /* Always false */
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* Get a Unicode code point from the TCHAR string in defined API encodeing */
|
|
static DWORD tchar2uni ( /* Returns a character in UTF-16 encoding (>=0x10000 on surrogate pair, 0xFFFFFFFF on decode error) */
|
|
const TCHAR** str /* Pointer to pointer to TCHAR string in configured encoding */
|
|
)
|
|
{
|
|
DWORD uc = 0;
|
|
const TCHAR *p = *str;
|
|
|
|
BYTE b = 0;
|
|
int nf = 0;
|
|
|
|
uc = (BYTE)*p++; /* Get an encoding unit */
|
|
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 >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF); /* Make a surrogate pair if needed */
|
|
}
|
|
|
|
*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 (Surrogate pair if >=0x10000) */
|
|
TCHAR* buf, /* Output buffer */
|
|
UINT szb /* Size of the buffer */
|
|
)
|
|
{
|
|
DWORD hc = 0;
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Move/Flush disk access window in the filesystem object */
|
|
/*-----------------------------------------------------------------------*/
|
|
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 it back into the volume */
|
|
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;
|
|
}
|
|
|
|
|
|
static FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs, /* Filesystem object */
|
|
LBA_t sect /* Sector LBA to make appearance in the fs->win[] */
|
|
)
|
|
{
|
|
FRESULT res = FR_OK;
|
|
|
|
|
|
if (sect != fs->winsect) { /* Window offset changed? */
|
|
res = sync_window(fs); /* Flush the window */
|
|
if (res == FR_OK) { /* Fill sector window with new data */
|
|
if (disk_read(fs->pdrv, fs->win, sect, 1) != RES_OK) {
|
|
sect = (LBA_t)0 - 1; /* Invalidate window if read data is not valid */
|
|
res = FR_DISK_ERR;
|
|
}
|
|
fs->winsect = sect;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Synchronize filesystem and data on the storage */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT sync_fs ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs /* Filesystem object */
|
|
)
|
|
{
|
|
FRESULT res = 0;
|
|
|
|
|
|
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, sizeof fs->win);
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get physical sector number from cluster number */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static LBA_t 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 + (LBA_t)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 = 0, bc = 0;
|
|
DWORD val = 0;
|
|
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;
|
|
default:
|
|
val = 1; /* Internal error */
|
|
}
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
BYTE *p = NULL;
|
|
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; /* Update 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)); /* Update 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 :
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 if entire chain) */
|
|
)
|
|
{
|
|
FRESULT res = FR_OK;
|
|
DWORD nxt = 0;
|
|
FATFS *fs = obj->fs;
|
|
|
|
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;
|
|
}
|
|
clst = nxt; /* Next cluster */
|
|
} while (clst < fs->n_fatent); /* Repeat while not the last link */
|
|
|
|
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 = 0, ncl = 0, scl = 0;
|
|
FRESULT res = 0;
|
|
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 */
|
|
|
|
{ /* 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 */
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Fill a cluster with zeros */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT dir_clear ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS *fs, /* Filesystem object */
|
|
DWORD clst /* Directory table to clear */
|
|
)
|
|
{
|
|
LBA_t sect = 0;
|
|
UINT n = 0, szb = 0;
|
|
BYTE *ibuf = NULL;
|
|
|
|
|
|
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, sizeof fs->win); /* Clear window buffer */
|
|
{
|
|
ibuf = fs->win; szb = 1; /* Use window buffer (many 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;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0, clst = 0;
|
|
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 = (DWORD)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 = 0, clst = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
ofs = dp->dptr + SZDIRE; /* Next entry */
|
|
if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) dp->sect = 0; /* Disable it if the offset reached the max value */
|
|
if (dp->sect == 0) return FR_NO_FILE; /* Report EOT if it has been disabled */
|
|
|
|
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 (!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 */
|
|
}
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
UINT n = 0;
|
|
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 (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
|
|
cl = ld_word(dir + DIR_FstClusLO);
|
|
if (fs->fs_type == FS_FAT32) {
|
|
cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;
|
|
}
|
|
|
|
return cl;
|
|
}
|
|
|
|
|
|
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));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*--------------------------------------------------------*/
|
|
/* 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 = 0, s = 0;
|
|
WCHAR wc = 0, uc = 0;
|
|
|
|
|
|
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 + 1 || 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 */
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------*/
|
|
/* 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 = 0, s = 0;
|
|
WCHAR wc = 0, uc = 0;
|
|
|
|
|
|
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 + 1) return 0; /* Buffer overflow? */
|
|
lfnbuf[i++] = wc = uc; /* Store it */
|
|
} else {
|
|
if (uc != 0xFFFF) return 0; /* Check filler */
|
|
}
|
|
}
|
|
|
|
if (dir[LDIR_Ord] & LLEF && wc != 0) { /* Put terminator if it is the last LFN part and not terminated */
|
|
if (i >= FF_MAX_LFN + 1) return 0; /* Buffer overflow? */
|
|
lfnbuf[i] = 0;
|
|
}
|
|
|
|
return 1; /* The part of LFN is valid */
|
|
}
|
|
|
|
|
|
/*-----------------------------------------*/
|
|
/* 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 = 0, s = 0;
|
|
WCHAR wc = 0;
|
|
|
|
|
|
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 following items */
|
|
} 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 */
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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] = {0}, c = 0;
|
|
UINT i = 0, j = 0;
|
|
WCHAR wc = 0;
|
|
DWORD sreg = 0;
|
|
|
|
|
|
mem_cpy(dst, src, 11);
|
|
|
|
if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */
|
|
sreg = seq;
|
|
while (*lfn) { /* Create a CRC as hash value */
|
|
wc = *lfn++;
|
|
for (i = 0; i < 16; i++) {
|
|
sreg = (sreg << 1) + (wc & 1);
|
|
wc >>= 1;
|
|
if (sreg & 0x10000) sreg ^= 0x11021;
|
|
}
|
|
}
|
|
seq = (UINT)sreg;
|
|
}
|
|
|
|
/* itoa (hexadecimal) */
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 attr = 0, b = 0;
|
|
BYTE ord = 0xFF, sum = 0xFF;
|
|
|
|
while (dp->sect) {
|
|
res = move_window(fs, dp->sect);
|
|
if (res != FR_OK) break;
|
|
b = dp->dir[DIR_Name]; /* Test for the entry type */
|
|
if (b == 0) {
|
|
res = FR_NO_FILE; break; /* Reached to end of the directory */
|
|
}
|
|
{ /* On the FAT/FAT32 volume */
|
|
dp->obj.attr = attr = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */
|
|
if (b == DDEM || b == '.' || (int)((attr & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
|
|
ord = 0xFF;
|
|
} else {
|
|
if (attr == AM_LFN) { /* An LFN entry is found */
|
|
if (b & LLEF) { /* Is it start of an LFN sequence? */
|
|
sum = dp->dir[LDIR_Chksum];
|
|
b &= (BYTE)~LLEF; ord = b;
|
|
dp->blk_ofs = dp->dptr;
|
|
}
|
|
/* Check LFN validity and capture it */
|
|
ord = (b == 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;
|
|
}
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
BYTE c = 0;
|
|
BYTE a = 0, ord = 0, sum = 0;
|
|
|
|
res = dir_sdi(dp, 0); /* Rewind directory object */
|
|
if (res != FR_OK) return res;
|
|
/* On the FAT/FAT32 volume */
|
|
ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
|
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 */
|
|
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 */
|
|
}
|
|
}
|
|
res = dir_next(dp, 0); /* Next entry */
|
|
} while (res == FR_OK);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
UINT n = 0, nlen = 0, nent = 0;
|
|
BYTE sn[12] = {0}, sum = 0;
|
|
|
|
|
|
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 */
|
|
|
|
/* 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);
|
|
}
|
|
}
|
|
|
|
|
|
/* 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 */
|
|
dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
|
|
fs->wflag = 1;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
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;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0, di = 0;
|
|
BYTE lcf = 0;
|
|
WCHAR wc = 0, hs = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
fno->fname[0] = 0; /* Invaidate file info */
|
|
if (dp->sect == 0) return; /* Exit if read pointer has reached end of directory */
|
|
|
|
{ /* 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 (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 Unicode */
|
|
if (wc == 0) { di = 0; break; } /* Buffer overflow? */
|
|
di += wc;
|
|
}
|
|
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 inaccessible */
|
|
fno->fname[di++] = '?';
|
|
} else {
|
|
for (si = di = 0, lcf = NS_BODY; fno->altname[si]; si++, di++) { /* Copy altname[] to fname[] with case information */
|
|
wc = (WCHAR)fno->altname[si];
|
|
if (wc == '.') lcf = NS_EXT;
|
|
if (IsUpper(wc) && (dp->dir[DIR_NTres] & lcf)) 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. */
|
|
}
|
|
|
|
|
|
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 */
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 */
|
|
)
|
|
{
|
|
BYTE b = 0, cf = 0;
|
|
WCHAR wc = 0, *lfn = NULL;
|
|
DWORD uc = 0;
|
|
UINT i = 0, ni = 0, si = 0, di = 0;
|
|
const TCHAR *p = NULL;
|
|
|
|
|
|
/* 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 */
|
|
}
|
|
if (wc < ' ') { /* End of path? */
|
|
cf = NS_LAST; /* Set last segment flag */
|
|
} else {
|
|
cf = 0; /* Next segment follows */
|
|
while (*p == '/' || *p == '\\') p++; /* Skip duplicated separators if exist */
|
|
}
|
|
*path = p; /* Return pointer to the next segment */
|
|
|
|
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 */
|
|
wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */
|
|
if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */
|
|
}
|
|
|
|
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;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
BYTE ns = 0;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
{ /* With heading separator */
|
|
while (*path == '/' || *path == '\\') path++; /* Strip heading separator */
|
|
dp->obj.sclust = 0; /* Start from root directory */
|
|
}
|
|
|
|
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;
|
|
}
|
|
{
|
|
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 number or null pointer) */
|
|
const TCHAR** path /* Pointer to pointer to the path name */
|
|
)
|
|
{
|
|
const TCHAR *tp = NULL, *tt = NULL;
|
|
TCHAR tc = 0;
|
|
int i = 0, vol = -1;
|
|
|
|
tt = tp = *path;
|
|
if (!tp) return vol; /* Invalid path name? */
|
|
do tc = *tt++; while ((UINT)tc >= (FF_USE_LFN ? ' ' : '!') && tc != ':'); /* Find a colon in the path */
|
|
|
|
if (tc == ':') { /* DOS/Windows style volume ID? */
|
|
i = FF_VOLUMES;
|
|
if (IsDigit(*tp) && tp + 2 == tt) { /* Is there a numeric volume ID + colon? */
|
|
i = (int)*tp - '0'; /* Get the LD number */
|
|
}
|
|
if (i < FF_VOLUMES) { /* If a volume ID is found, get the drive number and strip it */
|
|
vol = i; /* Drive number */
|
|
*path = tt; /* Snip the drive prefix off */
|
|
}
|
|
return vol;
|
|
}
|
|
/* No drive prefix is found */
|
|
vol = 0; /* Default drive is 0 */
|
|
return vol; /* Return the default drive */
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* GPT support functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Load a sector and check if it is an FAT VBR */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
/* Check what the sector is */
|
|
|
|
static UINT check_fs ( /* 0:FAT VBR, 1:exFAT VBR, 2:Valid BS but not FAT, 3:Invalid BS, 4:Disk error */
|
|
FATFS* fs, /* Filesystem object */
|
|
LBA_t sect /* Sector to load and check if it is an FAT-VBR or not */
|
|
)
|
|
{
|
|
fs->wflag = 0; fs->winsect = (LBA_t)0 - 1; /* Invaidate window */
|
|
if (move_window(fs, sect) != FR_OK) return 4; /* Load the boot sector */
|
|
|
|
if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot signature (always here regardless of the sector size) */
|
|
|
|
if (FF_FS_EXFAT && !mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1; /* Check if exFAT VBR */
|
|
|
|
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 */
|
|
}
|
|
|
|
|
|
/* Find an FAT volume */
|
|
/* (It supports only generic partitioning rules, MBR, GPT and SFD) */
|
|
|
|
static UINT find_volume ( /* Returns BS status found in the hosting drive */
|
|
FATFS* fs, /* Filesystem object */
|
|
UINT part /* Partition to fined = 0:auto, 1..:forced */
|
|
)
|
|
{
|
|
UINT fmt = 0, i = 0;
|
|
DWORD mbr_pt[4] = {0};
|
|
|
|
|
|
fmt = check_fs(fs, 0); /* Load sector 0 and check if it is an FAT VBR as SFD */
|
|
if (fmt != 2 && (fmt >= 3 || part == 0)) return fmt; /* Returns if it is a FAT VBR as auto scan, not a BS or disk error */
|
|
|
|
/* Sector 0 is not an FAT VBR or forced partition number wants a partition */
|
|
|
|
if (FF_MULTI_PARTITION && part > 4) return 3; /* MBR has 4 partitions max */
|
|
for (i = 0; i < 4; i++) { /* Load partition offset in the MBR */
|
|
mbr_pt[i] = ld_dword(fs->win + MBR_Table + i * SZ_PTE + PTE_StLba);
|
|
}
|
|
i = part ? part - 1 : 0; /* Table index to find first */
|
|
do { /* Find an FAT volume */
|
|
fmt = mbr_pt[i] ? check_fs(fs, mbr_pt[i]) : 3; /* Check if the partition is FAT */
|
|
} while (part == 0 && fmt >= 2 && ++i < 4);
|
|
return fmt;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Determine logical drive number and mount the volume if needed */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT mount_volume ( /* FR_OK(0): successful, !=0: an 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 */
|
|
)
|
|
{
|
|
int vol = 0;
|
|
DSTATUS stat = 0;
|
|
LBA_t bsect = 0;
|
|
DWORD tsect = 0, sysect = 0, fasize = 0, nclst = 0, szbfat = 0;
|
|
WORD nrsv = 0;
|
|
FATFS *fs = NULL;
|
|
UINT fmt = 0;
|
|
|
|
|
|
/* 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? */
|
|
*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 already valid */
|
|
}
|
|
}
|
|
|
|
/* The filesystem object is not valid. */
|
|
/* Following code attempts to mount the volume. (find a FAT volume, analyze the BPB and initialize the filesystem object) */
|
|
|
|
fs->fs_type = 0; /* Clear the filesystem object */
|
|
fs->pdrv = LD2PD(vol); /* Volume hosting 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 volume on the drive */
|
|
fmt = find_volume(fs, LD2PT(vol));
|
|
if (fmt == 4) return FR_DISK_ERR; /* An error occurred in the disk I/O layer */
|
|
if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */
|
|
bsect = fs->winsect; /* Volume location */
|
|
|
|
/* An FAT volume is found (bsect). Following code initializes the filesystem object */
|
|
|
|
{
|
|
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) */
|
|
|
|
/* 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 */
|
|
}
|
|
|
|
fs->fs_type = (BYTE)fmt;/* FAT sub-type */
|
|
fs->id = ++Fsid; /* Volume mount ID */
|
|
fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
|
|
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 (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */
|
|
res = FR_OK;
|
|
}
|
|
}
|
|
*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 = NULL;
|
|
int vol = 0;
|
|
FRESULT res = 0;
|
|
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) {
|
|
cfs->fs_type = 0; /* Clear old fs object */
|
|
}
|
|
|
|
if (fs) {
|
|
fs->fs_type = 0; /* Clear new fs object */
|
|
}
|
|
FatFs[vol] = fs; /* Register new fs object */
|
|
|
|
if (opt == 0) return FR_OK; /* Do not mount now, it will be mounted later */
|
|
|
|
res = mount_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 = 0;
|
|
DIR dj = {0};
|
|
FATFS *fs = NULL;
|
|
DWORD cl = 0, bcs = 0, clst = 0;
|
|
LBA_t sc = 0;
|
|
FSIZE_t ofs = 0;
|
|
DEF_NAMBUF
|
|
|
|
|
|
if (!fp) return FR_INVALID_OBJECT;
|
|
|
|
/* Get logical drive number */
|
|
mode &= FF_FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND;
|
|
res = mount_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 (res == FR_OK) {
|
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
|
|
res = FR_INVALID_NAME;
|
|
}
|
|
}
|
|
/* 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 */
|
|
res = dir_register(&dj);
|
|
}
|
|
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 */
|
|
{
|
|
/* 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 */
|
|
sc = fs->winsect;
|
|
res = remove_chain(&dj.obj, cl, 0);
|
|
if (res == FR_OK) {
|
|
res = move_window(fs, sc);
|
|
fs->last_clst = cl - 1; /* Reuse the cluster hole */
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else { /* Open an existing file */
|
|
if (res == FR_OK) { /* Is the object existing? */
|
|
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 (res == FR_OK) {
|
|
{
|
|
fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */
|
|
fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
|
|
}
|
|
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 */
|
|
mem_set(fp->buf, 0, sizeof fp->buf); /* Clear sector buffer */
|
|
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 */
|
|
sc = clst2sect(fs, clst);
|
|
if (sc == 0) {
|
|
res = FR_INT_ERR;
|
|
} else {
|
|
fp->sect = sc + (DWORD)(ofs / SS(fs));
|
|
if (disk_read(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD clst = 0;
|
|
LBA_t sect = 0;
|
|
FSIZE_t remain = 0;
|
|
UINT rcnt = 0, cc = 0, csect = 0;
|
|
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 btr bytes 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 */
|
|
{
|
|
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 ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
|
|
mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
|
|
}
|
|
rcnt = SS(fs) * cc; /* Number of bytes transferred */
|
|
continue;
|
|
}
|
|
if (fp->sect != sect) { /* Load data sector if not in cache */
|
|
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;
|
|
}
|
|
if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
|
}
|
|
fp->sect = sect;
|
|
}
|
|
rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
|
|
if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */
|
|
mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
|
|
}
|
|
|
|
LEAVE_FF(fs, FR_OK);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD clst = 0;
|
|
LBA_t sect = 0;
|
|
UINT wcnt = 0, cc = 0, csect = 0;
|
|
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 */
|
|
{
|
|
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 (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;
|
|
}
|
|
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 (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;
|
|
}
|
|
wcnt = SS(fs) * cc; /* Number of bytes transferred */
|
|
continue;
|
|
}
|
|
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);
|
|
}
|
|
fp->sect = sect;
|
|
}
|
|
wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
|
|
if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */
|
|
mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
|
|
fp->flag |= FA_DIRTY;
|
|
}
|
|
|
|
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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD tm = 0;
|
|
BYTE *dir = NULL;
|
|
|
|
|
|
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 (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;
|
|
}
|
|
/* Update the directory entry */
|
|
tm = GET_FATTIME(); /* Modified time */
|
|
{
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Close File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_close (
|
|
FIL* fp /* Pointer to the file object to be closed */
|
|
)
|
|
{
|
|
FRESULT res = 0;
|
|
FATFS *fs = NULL;
|
|
|
|
res = f_sync(fp); /* Flush cached data */
|
|
if (res == FR_OK)
|
|
{
|
|
res = validate(&fp->obj, &fs); /* Lock volume */
|
|
if (res == FR_OK) {
|
|
fp->obj.fs = 0; /* Invalidate file object */
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD clst = 0, bcs = 0;
|
|
LBA_t nsect = 0;
|
|
FSIZE_t ifptr = 0;
|
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
|
if (res == FR_OK) res = (FRESULT)fp->err;
|
|
if (res != FR_OK) LEAVE_FF(fs, res);
|
|
|
|
|
|
/* Normal Seek */
|
|
{
|
|
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 (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;
|
|
}
|
|
fp->clust = clst;
|
|
}
|
|
if (clst != 0) {
|
|
while (ofs > bcs) { /* Cluster following loop */
|
|
ofs -= bcs; fp->fptr += bcs;
|
|
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
|
|
{
|
|
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 (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;
|
|
}
|
|
if (disk_read(fs->pdrv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
|
fp->sect = nsect;
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = NULL;
|
|
DEF_NAMBUF
|
|
|
|
|
|
if (!dp) return FR_INVALID_OBJECT;
|
|
|
|
/* Get logical drive */
|
|
res = mount_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 */
|
|
{
|
|
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 */
|
|
}
|
|
}
|
|
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 failed */
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Close Directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_closedir (
|
|
DIR *dp /* Pointer to the directory object to be closed */
|
|
)
|
|
{
|
|
FRESULT res = 0;
|
|
FATFS *fs = NULL;
|
|
|
|
|
|
res = validate(&dp->obj, &fs); /* Check validity of the file object */
|
|
if (res == FR_OK) {
|
|
dp->obj.fs = 0; /* Invalidate directory object */
|
|
}
|
|
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 = 0;
|
|
FATFS *fs = NULL;
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get File Status */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_stat (
|
|
const TCHAR* path, /* Pointer to the file path */
|
|
FILINFO* fno /* Pointer to file information to return */
|
|
)
|
|
{
|
|
FRESULT res = 0;
|
|
DIR dj = {0};
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
res = mount_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);
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD nfree = 0, clst = 0, stat = 0;
|
|
LBA_t sect = 0;
|
|
UINT i = 0;
|
|
FFOBJID obj = {0};
|
|
|
|
|
|
/* Get logical drive */
|
|
res = mount_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 {
|
|
{ /* 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 = 0;
|
|
FATFS *fs = NULL;
|
|
DWORD ncl = 0;
|
|
|
|
|
|
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 (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;
|
|
}
|
|
}
|
|
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 = 0;
|
|
DIR dj = {0}, sdj = {0};
|
|
DWORD dclst = 0;
|
|
FATFS *fs = NULL;
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
res = mount_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 (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) {
|
|
{
|
|
dclst = ld_clust(fs, dj.dir);
|
|
}
|
|
if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */
|
|
{
|
|
sdj.obj.fs = fs; /* Open the sub-directory */
|
|
sdj.obj.sclust = dclst;
|
|
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 */
|
|
res = remove_chain(&dj.obj, dclst, 0);
|
|
}
|
|
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 = 0;
|
|
DIR dj = {0};
|
|
FFOBJID sobj = {0};
|
|
FATFS *fs = NULL;
|
|
DWORD dcl = 0, pcl = 0, tm = 0;
|
|
DEF_NAMBUF
|
|
|
|
|
|
res = mount_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) res = FR_EXIST; /* Name collision? */
|
|
if (FF_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) { /* Invalid name? */
|
|
res = FR_INVALID_NAME;
|
|
}
|
|
if (res == FR_NO_FILE) { /* It is clear to create a new directory */
|
|
sobj.fs = fs; /* New object id to create a new chain */
|
|
dcl = create_chain(&sobj, 0); /* Allocate a cluster for the new directory */
|
|
res = FR_OK;
|
|
if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster? */
|
|
if (dcl == 1) res = FR_INT_ERR; /* Any insanity? */
|
|
if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR; /* Disk error? */
|
|
tm = GET_FATTIME();
|
|
if (res == FR_OK) {
|
|
res = dir_clear(fs, dcl); /* Clean up the new table */
|
|
if (res == FR_OK) {
|
|
if (!FF_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* Create dot entries (FAT only) */
|
|
mem_set(fs->win + DIR_Name, ' ', 11); /* Create "." entry */
|
|
fs->win[DIR_Name] = '.';
|
|
fs->win[DIR_Attr] = AM_DIR;
|
|
st_dword(fs->win + DIR_ModTime, tm);
|
|
st_clust(fs, fs->win, dcl);
|
|
mem_cpy(fs->win + SZDIRE, fs->win, SZDIRE); /* Create ".." entry */
|
|
fs->win[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
|
|
st_clust(fs, fs->win + SZDIRE, pcl);
|
|
fs->wflag = 1;
|
|
}
|
|
res = dir_register(&dj); /* Register the object to the parent directory */
|
|
}
|
|
}
|
|
if (res == FR_OK) {
|
|
{
|
|
st_dword(dj.dir + DIR_ModTime, tm); /* Created time */
|
|
st_clust(fs, dj.dir, dcl); /* Table start cluster */
|
|
dj.dir[DIR_Attr] = AM_DIR; /* Attribute */
|
|
fs->wflag = 1;
|
|
}
|
|
if (res == FR_OK) {
|
|
res = sync_fs(fs);
|
|
}
|
|
} else {
|
|
remove_chain(&sobj, dcl, 0); /* Could not register, remove the allocated cluster */
|
|
}
|
|
}
|
|
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 = 0;
|
|
DIR djo = {0}, djn = {0};
|
|
FATFS *fs = NULL;
|
|
BYTE buf[(FF_FS_EXFAT) ? (SZDIRE * 2) : (SZDIRE)] = {0}, *dir = NULL;
|
|
LBA_t sect = 0;
|
|
DEF_NAMBUF
|
|
|
|
|
|
get_ldnumber(&path_new); /* Snip the drive number of new name off */
|
|
res = mount_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 (res == FR_OK) { /* Object to be renamed is found */
|
|
{ /* 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 */
|
|
sect = clst2sect(fs, ld_clust(fs, dir));
|
|
if (sect == 0) {
|
|
res = FR_INT_ERR;
|
|
} else {
|
|
/* Start of critical section where an interruption can cause a cross-link */
|
|
res = move_window(fs, sect);
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 = 0;
|
|
DIR dj = {0};
|
|
FATFS *fs = NULL;
|
|
UINT si = 0, di = 0;
|
|
WCHAR wc = 0;
|
|
|
|
/* Get logical drive */
|
|
res = mount_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) {
|
|
{
|
|
si = di = 0; /* Extract volume label from AM_VOL entry */
|
|
while (si < 11) {
|
|
wc = dj.dir[si++];
|
|
if (dbc_1st((BYTE)wc) && si < 11) wc = wc << 8 | dj.dir[si++]; /* Is it a DBC? */
|
|
wc = ff_oem2uni(wc, CODEPAGE); /* Convert it into Unicode */
|
|
if (wc != 0) wc = put_utf(wc, &label[di], 4); /* Put it in Unicode */
|
|
if (wc == 0) { di = 0; break; }
|
|
di += wc;
|
|
}
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Set Volume Label */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_setlabel (
|
|
const TCHAR* label /* Volume label to set with heading logical drive number */
|
|
)
|
|
{
|
|
FRESULT res = 0;
|
|
DIR dj = {0};
|
|
FATFS *fs = NULL;
|
|
BYTE dirvn[22] = {0};
|
|
UINT di = 0;
|
|
WCHAR wc = 0;
|
|
static const char badchr[] = "+.,;=[]/\\\"*:<>\?|\x7F"; /* [0..] for FAT, [7..] for exFAT */
|
|
DWORD dc = 0;
|
|
|
|
/* Get logical drive */
|
|
res = mount_volume(&label, &fs, FA_WRITE);
|
|
if (res != FR_OK) LEAVE_FF(fs, res);
|
|
|
|
{ /* On the FAT/FAT32 volume */
|
|
mem_set(dirvn, ' ', 11);
|
|
di = 0;
|
|
while ((UINT)*label >= ' ') { /* Create volume label */
|
|
dc = tchar2uni(&label);
|
|
wc = (dc < 0x10000) ? ff_uni2oem(ff_wtoupper(dc), CODEPAGE) : 0;
|
|
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] = ET_VLABEL; /* Create volume label 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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY && FF_USE_MKFS
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Create an FAT/exFAT volume */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#define N_SEC_TRACK 63 /* Sectors per track for determination of drive CHS */
|
|
#define GPT_ALIGN 0x100000 /* Alignment of partitions in GPT [byte] (>=128KB) */
|
|
#define GPT_ITEMS 128 /* Number of GPT table size (>=128, sector aligned) */
|
|
|
|
|
|
/* Create partitions on the physical drive */
|
|
|
|
static FRESULT create_partition (
|
|
BYTE drv, /* Physical drive number */
|
|
const LBA_t plst[], /* Partition list */
|
|
UINT sys, /* System ID (for only MBR, temp setting) and bit8:GPT */
|
|
BYTE* buf /* Working buffer for a sector */
|
|
)
|
|
{
|
|
UINT i = 0, cy = 0;
|
|
LBA_t sz_drv = 0;
|
|
DWORD sz_drv32 = 0, s_lba32 = 0, n_lba32 = 0;
|
|
BYTE *pte = NULL, hd = 0, n_hd = 0, sc = 0, n_sc = 0;
|
|
|
|
/* Get drive size */
|
|
if (disk_ioctl(drv, GET_SECTOR_COUNT, &sz_drv) != RES_OK) return FR_DISK_ERR;
|
|
|
|
{ /* Create partitions in MBR */
|
|
sz_drv32 = (DWORD)sz_drv;
|
|
n_sc = N_SEC_TRACK; /* Determine drive CHS without any consideration of the drive geometry */
|
|
for (n_hd = 8; n_hd != 0 && sz_drv32 / n_hd / n_sc > 1024; n_hd *= 2) ;
|
|
if (n_hd == 0) n_hd = 255; /* Number of heads needs to be <256 */
|
|
|
|
mem_set(buf, 0, FF_MAX_SS); /* Clear MBR */
|
|
pte = buf + MBR_Table; /* Partition table in the MBR */
|
|
for (i = 0, s_lba32 = n_sc; i < 4 && s_lba32 != 0 && s_lba32 < sz_drv32; i++, s_lba32 += n_lba32) {
|
|
n_lba32 = (DWORD)plst[i]; /* Get partition size */
|
|
if (n_lba32 <= 100) n_lba32 = (n_lba32 == 100) ? sz_drv32 : sz_drv32 / 100 * n_lba32; /* Size in percentage? */
|
|
if (s_lba32 + n_lba32 > sz_drv32 || s_lba32 + n_lba32 < s_lba32) n_lba32 = sz_drv32 - s_lba32; /* Clip at drive size */
|
|
if (n_lba32 == 0) break; /* End of table or no sector to allocate? */
|
|
|
|
st_dword(pte + PTE_StLba, s_lba32); /* Start LBA */
|
|
st_dword(pte + PTE_SizLba, n_lba32); /* Number of sectors */
|
|
pte[PTE_System] = (BYTE)sys; /* System type */
|
|
|
|
cy = (UINT)(s_lba32 / n_sc / n_hd); /* Start cylinder */
|
|
hd = (BYTE)(s_lba32 / n_sc % n_hd); /* Start head */
|
|
sc = (BYTE)(s_lba32 % n_sc + 1); /* Start sector */
|
|
pte[PTE_StHead] = hd;
|
|
pte[PTE_StSec] = (BYTE)((cy >> 2 & 0xC0) | sc);
|
|
pte[PTE_StCyl] = (BYTE)cy;
|
|
|
|
cy = (UINT)((s_lba32 + n_lba32 - 1) / n_sc / n_hd); /* End cylinder */
|
|
hd = (BYTE)((s_lba32 + n_lba32 - 1) / n_sc % n_hd); /* End head */
|
|
sc = (BYTE)((s_lba32 + n_lba32 - 1) % n_sc + 1); /* End sector */
|
|
pte[PTE_EdHead] = hd;
|
|
pte[PTE_EdSec] = (BYTE)((cy >> 2 & 0xC0) | sc);
|
|
pte[PTE_EdCyl] = (BYTE)cy;
|
|
|
|
pte += SZ_PTE; /* Next entry */
|
|
}
|
|
|
|
st_word(buf + BS_55AA, 0xAA55); /* MBR signature */
|
|
if (disk_write(drv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */
|
|
}
|
|
|
|
return FR_OK;
|
|
}
|
|
|
|
|
|
|
|
FRESULT f_mkfs (
|
|
const TCHAR* path, /* Logical drive number */
|
|
const MKFS_PARM* opt, /* Format options */
|
|
void* work, /* Pointer to working buffer (null: use heap memory) */
|
|
UINT len /* Size of working buffer [byte] */
|
|
)
|
|
{
|
|
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) */
|
|
static const MKFS_PARM defopt = {FM_ANY, 0, 0, 0, 0}; /* Default parameter */
|
|
BYTE fsopt = 0, fsty = 0, sys = 0, *buf = NULL, *pte = NULL, pdrv = 0, ipart = 0;
|
|
WORD ss; /* Sector size */
|
|
DWORD sz_buf = 0, sz_blk = 0, n_clst = 0, pau = 0, nsect = 0, n = 0;
|
|
LBA_t sz_vol, b_vol, b_fat, b_data; /* Size of volume, Base LBA of volume, fat, data */
|
|
LBA_t sect = 0, lba[2] = {0};
|
|
DWORD sz_rsv, sz_fat, sz_dir, sz_au; /* Size of reserved, fat, dir, data, cluster */
|
|
UINT n_fat, n_root, i; /* Index, Number of FATs and Number of roor dir entries */
|
|
int vol = 0;
|
|
DSTATUS ds = 0;
|
|
FRESULT fr = 0;
|
|
|
|
|
|
/* 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 fs object if mounted */
|
|
pdrv = LD2PD(vol); /* Physical drive */
|
|
ipart = LD2PT(vol); /* Partition (0:create as new, 1..:get from partition table) */
|
|
if (!opt) opt = &defopt; /* Use default parameter if it is not given */
|
|
|
|
/* Get physical drive status (sz_drv, sz_blk, ss) */
|
|
ds = disk_initialize(pdrv);
|
|
if (ds & STA_NOINIT) return FR_NOT_READY;
|
|
if (ds & STA_PROTECT) return FR_WRITE_PROTECTED;
|
|
sz_blk = opt->align;
|
|
if (sz_blk == 0 && disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK) sz_blk = 1;
|
|
if (sz_blk == 0 || sz_blk > 0x8000 || (sz_blk & (sz_blk - 1))) sz_blk = 1;
|
|
#if FF_MAX_SS != FF_MIN_SS
|
|
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
|
|
/* Options for FAT sub-type and FAT parameters */
|
|
fsopt = opt->fmt & (FM_ANY | FM_SFD);
|
|
n_fat = (opt->n_fat >= 1 && opt->n_fat <= 2) ? opt->n_fat : 1;
|
|
n_root = (opt->n_root >= 1 && opt->n_root <= 32768 && (opt->n_root % (ss / SZDIRE)) == 0) ? opt->n_root : 512;
|
|
sz_au = (opt->au_size <= 0x1000000 && (opt->au_size & (opt->au_size - 1)) == 0) ? opt->au_size : 0;
|
|
sz_au /= ss; /* Byte --> Sector */
|
|
|
|
/* Get working buffer */
|
|
sz_buf = len / ss; /* Size of working buffer [sector] */
|
|
if (sz_buf == 0) return FR_NOT_ENOUGH_CORE;
|
|
buf = (BYTE*)work; /* Working buffer */
|
|
if (!buf) return FR_NOT_ENOUGH_CORE;
|
|
|
|
/* Determine where the volume to be located (b_vol, sz_vol) */
|
|
b_vol = sz_vol = 0;
|
|
if (FF_MULTI_PARTITION && ipart != 0) { /* Is the volume associated with any specific partition? */
|
|
/* Get partition location from the existing partition table */
|
|
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 */
|
|
{ /* Get the partition location from MBR partition table */
|
|
pte = buf + (MBR_Table + (ipart - 1) * SZ_PTE);
|
|
if (ipart > 4 || 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 { /* The volume is associated with a physical drive */
|
|
if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
|
|
if (!(fsopt & FM_SFD)) { /* To be partitioned? */
|
|
/* Create a single-partition on the drive in this function */
|
|
{ /* Partitioning is in MBR */
|
|
if (sz_vol > N_SEC_TRACK) {
|
|
b_vol = N_SEC_TRACK; sz_vol -= b_vol; /* Estimated partition offset and size */
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (sz_vol < 128) LEAVE_MKFS(FR_MKFS_ABORTED); /* Check if volume size is >=128s */
|
|
|
|
/* Now start to create a FAT volume at b_vol and sz_vol */
|
|
|
|
do { /* Pre-determine the FAT type */
|
|
if (FF_FS_EXFAT && (fsopt & FM_EXFAT)) { /* exFAT possible? */
|
|
if ((fsopt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || sz_au > 128) { /* exFAT only, vol >= 64MS or sz_au > 128S ? */
|
|
fsty = FS_EXFAT; break;
|
|
}
|
|
}
|
|
if (sz_au > 128) sz_au = 128; /* Invalid AU for FAT/FAT32? */
|
|
if (fsopt & FM_FAT32) { /* FAT32 possible? */
|
|
if (!(fsopt & FM_FAT)) { /* no-FAT? */
|
|
fsty = FS_FAT32; break;
|
|
}
|
|
}
|
|
if (!(fsopt & FM_FAT)) LEAVE_MKFS(FR_INVALID_PARAMETER); /* no-FAT? */
|
|
fsty = FS_FAT16;
|
|
} while (0);
|
|
|
|
{ /* Create an FAT/FAT32 volume */
|
|
do {
|
|
pau = sz_au;
|
|
/* Pre-determine number of clusters and FAT sub-type */
|
|
if (fsty == FS_FAT32) { /* FAT32 volume */
|
|
if (pau == 0) { /* AU auto-selection */
|
|
n = (DWORD)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 = (DWORD)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 = (DWORD)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 = (DWORD)sz_vol / pau;
|
|
if (n_clst > MAX_FAT12) {
|
|
n = n_clst * 2 + 4; /* FAT size [byte] */
|
|
} else {
|
|
fsty = 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_root * SZDIRE / ss; /* Root dir size [sector] */
|
|
}
|
|
b_fat = b_vol + sz_rsv; /* FAT base */
|
|
b_data = b_fat + sz_fat * n_fat + sz_dir; /* Data base */
|
|
|
|
/* Align data area to erase block boundary (for flash memory media) */
|
|
n = (DWORD)(((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data); /* Sectors to next nearest from current data base */
|
|
if (fsty == FS_FAT32) { /* FAT32: Move FAT */
|
|
sz_rsv += n; b_fat += n;
|
|
} else { /* FAT: Expand FAT */
|
|
if (n % n_fat) { /* Adjust fractional error if needed */
|
|
n--; sz_rsv++; b_fat++;
|
|
}
|
|
sz_fat += n / n_fat;
|
|
}
|
|
|
|
/* 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 = ((DWORD)sz_vol - sz_rsv - sz_fat * n_fat - sz_dir) / pau;
|
|
if (fsty == FS_FAT32) {
|
|
if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32? */
|
|
if (sz_au == 0 && (sz_au = pau / 2) != 0) continue; /* Adjust cluster size and retry */
|
|
LEAVE_MKFS(FR_MKFS_ABORTED);
|
|
}
|
|
}
|
|
if (fsty == FS_FAT16) {
|
|
if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */
|
|
if (sz_au == 0 && (pau * 2) <= 64) {
|
|
sz_au = pau * 2; continue; /* Adjust cluster size and retry */
|
|
}
|
|
if ((fsopt & FM_FAT32)) {
|
|
fsty = FS_FAT32; continue; /* Switch type to FAT32 and retry */
|
|
}
|
|
if (sz_au == 0 && (sz_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 (sz_au == 0 && (sz_au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
|
|
LEAVE_MKFS(FR_MKFS_ABORTED);
|
|
}
|
|
}
|
|
if (fsty == 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);
|
|
|
|
/* 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_fat; /* Number of FATs */
|
|
st_word(buf + BPB_RootEntCnt, (WORD)((fsty == FS_FAT32) ? 0 : n_root)); /* 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, (DWORD)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, (DWORD)b_vol); /* Volume offset in the physical drive [sector] */
|
|
if (fsty == 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 (fsty == 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, sz_buf * ss);
|
|
sect = b_fat; /* FAT start sector */
|
|
for (i = 0; i < n_fat; i++) { /* Initialize FATs each */
|
|
if (fsty == FS_FAT32) {
|
|
st_dword(buf + 0, 0xFFFFFFF8); /* FAT[0] */
|
|
st_dword(buf + 4, 0xFFFFFFFF); /* FAT[1] */
|
|
st_dword(buf + 8, 0x0FFFFFFF); /* FAT[2] (root directory) */
|
|
} else {
|
|
st_dword(buf + 0, (fsty == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* FAT[0] and FAT[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); /* Rest of FAT all are cleared */
|
|
sect += n; nsect -= n;
|
|
} while (nsect);
|
|
}
|
|
|
|
/* Initialize root directory (fill with zero) */
|
|
nsect = (fsty == 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);
|
|
}
|
|
|
|
/* A FAT volume has been created here */
|
|
|
|
/* Determine system ID in the MBR partition table */
|
|
if (FF_FS_EXFAT && fsty == FS_EXFAT) {
|
|
sys = 0x07; /* exFAT */
|
|
} else {
|
|
if (fsty == FS_FAT32) {
|
|
sys = 0x0C; /* FAT32X */
|
|
} else {
|
|
if (sz_vol >= 0x10000) {
|
|
sys = 0x06; /* FAT12/16 (large) */
|
|
} else {
|
|
sys = (fsty == FS_FAT16) ? 0x04 : 0x01; /* FAT16 : FAT12 */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Update partition information */
|
|
if (FF_MULTI_PARTITION && ipart != 0) { /* Volume is in the existing partition */
|
|
if (!FF_LBA64 || !(fsopt & 0x80)) {
|
|
/* 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 + (ipart - 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 { /* Volume as a new single partition */
|
|
if (!(fsopt & FM_SFD)) { /* Create partition table if not in SFD */
|
|
lba[0] = sz_vol, lba[1] = 0;
|
|
fr = create_partition(pdrv, lba, sys, buf);
|
|
if (fr != FR_OK) LEAVE_MKFS(fr);
|
|
}
|
|
}
|
|
|
|
if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
|
|
|
|
LEAVE_MKFS(FR_OK);
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* !FF_FS_READONLY && FF_USE_MKFS */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|