6979 lines
229 KiB
C
6979 lines
229 KiB
C
/*----------------------------------------------------------------------------/
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/ FatFs - Generic FAT Filesystem Module R0.15 w/patch2 /
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/-----------------------------------------------------------------------------/
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/
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/ Copyright (C) 2022, ChaN, all right reserved.
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/
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/ FatFs module is an open source software. Redistribution and use of FatFs in
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/ source and binary forms, with or without modification, are permitted provided
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/ that the following condition is met:
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/
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/
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/----------------------------------------------------------------------------*/
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#include "ff.h" /* Declarations of FatFs API */
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#ifndef __LITEOS_M__
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#include <user_copy.h>
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#endif
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#include "diskio.h" /* Declarations of device I/O functions */
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#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
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#include "virpartff.h"
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#endif
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#ifndef __LITEOS_M__
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#include "fatfs.h"
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#endif
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/*--------------------------------------------------------------------------
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Module Private Definitions
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---------------------------------------------------------------------------*/
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#if FF_DEFINED != 80286 /* Revision ID */
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#error Wrong include file (ff.h).
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#endif
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/* Character code support macros */
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#define IsUpper(c) ((c) >= 'A' && (c) <= 'Z')
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#define IsLower(c) ((c) >= 'a' && (c) <= 'z')
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#define IsDigit(c) ((c) >= '0' && (c) <= '9')
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#define IsSeparator(c) ((c) == '/' || (c) == '\\')
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#define IsTerminator(c) ((UINT)(c) < (FF_USE_LFN ? ' ' : '!'))
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#define IsSurrogate(c) ((c) >= 0xD800 && (c) <= 0xDFFF)
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#define IsSurrogateH(c) ((c) >= 0xD800 && (c) <= 0xDBFF)
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#define IsSurrogateL(c) ((c) >= 0xDC00 && (c) <= 0xDFFF)
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/* Additional file access control and file status flags for internal use */
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#define FA_SEEKEND 0x20 /* Seek to end of the file on file open */
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#define FA_MODIFIED 0x40 /* File has been modified */
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#define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */
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/* Additional file attribute bits for internal use */
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#define AM_VOL 0x08 /* Volume label */
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#define AM_LFN 0x0F /* LFN entry */
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#define AM_MASK 0x3F /* Mask of defined bits in FAT */
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/* Name status flags in fn[11] */
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#define NSFLAG 11 /* Index of the name status byte */
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#define NS_LOSS 0x01 /* Out of 8.3 format */
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#define NS_LFN 0x02 /* Force to create LFN entry */
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#define NS_LAST 0x04 /* Last segment */
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#define NS_BODY 0x08 /* Lower case flag (body) */
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#define NS_EXT 0x10 /* Lower case flag (ext) */
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#define NS_DOT 0x20 /* Dot entry */
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#define NS_NOLFN 0x40 /* Do not find LFN */
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#define NS_NONAME 0x80 /* Not followed */
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/* FatFs refers the FAT structure as simple byte array instead of structure member
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/ because the C structure is not binary compatible between different platforms */
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#define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */
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#define BS_OEMName 3 /* OEM name (8-byte) */
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#define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */
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#define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */
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#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */
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#define BPB_NumFATs 16 /* Number of FATs (BYTE) */
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#define BPB_RootEntCnt 17 /* Size of root directory area for FAT [entry] (WORD) */
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#define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */
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#define BPB_Media 21 /* Media descriptor byte (BYTE) */
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#define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */
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#define BPB_SecPerTrk 24 /* Number of sectors per track for int13h [sector] (WORD) */
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#define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */
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#define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */
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#define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */
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#define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */
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#define BS_NTres 37 /* WindowsNT error flag (BYTE) */
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#define BS_BootSig 38 /* Extended boot signature (BYTE) */
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#define BS_VolID 39 /* Volume serial number (DWORD) */
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#define BS_VolLab 43 /* Volume label string (8-byte) */
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#define BS_FilSysType 54 /* Filesystem type string (8-byte) */
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#define BS_BootCode 62 /* Boot code (448-byte) */
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#define BS_55AA 510 /* Signature word (WORD) */
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#define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */
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#define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */
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#define BPB_FSVer32 42 /* FAT32: Filesystem version (WORD) */
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#define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */
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#define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */
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#define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */
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#define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */
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#define BS_NTres32 65 /* FAT32: Error flag (BYTE) */
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#define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */
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#define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */
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#define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */
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#define BS_FilSysType32 82 /* FAT32: Filesystem type string (8-byte) */
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#define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */
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#define SZDIRE 32 /* Size of a directory entry */
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#define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */
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#define RDDEM 0x05 /* Replacement of the character collides with DDEM */
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#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */
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#define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */
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#define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */
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#define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */
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#define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */
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#define MBR_Table 446 /* MBR: Offset of partition table in the MBR */
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#define SZ_PTE 16 /* MBR: Size of a partition table entry */
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#define PTE_Boot 0 /* MBR PTE: Boot indicator */
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#define PTE_StHead 1 /* MBR PTE: Start head */
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#define PTE_StSec 2 /* MBR PTE: Start sector */
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#define PTE_StCyl 3 /* MBR PTE: Start cylinder */
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#define PTE_System 4 /* MBR PTE: System ID */
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#define PTE_EdHead 5 /* MBR PTE: End head */
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#define PTE_EdSec 6 /* MBR PTE: End sector */
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#define PTE_EdCyl 7 /* MBR PTE: End cylinder */
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#define PTE_StLba 8 /* MBR PTE: Start in LBA */
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#define PTE_SizLba 12 /* MBR PTE: Size in LBA */
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#define GPTH_Sign 0 /* GPT HDR: Signature (8-byte) */
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#define GPTH_Rev 8 /* GPT HDR: Revision (DWORD) */
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#define GPTH_Size 12 /* GPT HDR: Header size (DWORD) */
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#define GPTH_Bcc 16 /* GPT HDR: Header BCC (DWORD) */
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#define GPTH_CurLba 24 /* GPT HDR: This header LBA (QWORD) */
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#define GPTH_BakLba 32 /* GPT HDR: Another header LBA (QWORD) */
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#define GPTH_FstLba 40 /* GPT HDR: First LBA for partition data (QWORD) */
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#define GPTH_LstLba 48 /* GPT HDR: Last LBA for partition data (QWORD) */
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#define GPTH_DskGuid 56 /* GPT HDR: Disk GUID (16-byte) */
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#define GPTH_PtOfs 72 /* GPT HDR: Partition table LBA (QWORD) */
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#define GPTH_PtNum 80 /* GPT HDR: Number of table entries (DWORD) */
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#define GPTH_PteSize 84 /* GPT HDR: Size of table entry (DWORD) */
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#define GPTH_PtBcc 88 /* GPT HDR: Partition table BCC (DWORD) */
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#define SZ_GPTE 128 /* GPT PTE: Size of partition table entry */
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#define GPTE_PtGuid 0 /* GPT PTE: Partition type GUID (16-byte) */
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#define GPTE_UpGuid 16 /* GPT PTE: Partition unique GUID (16-byte) */
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#define GPTE_FstLba 32 /* GPT PTE: First LBA of partition (QWORD) */
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#define GPTE_LstLba 40 /* GPT PTE: Last LBA of partition (QWORD) */
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#define GPTE_Flags 48 /* GPT PTE: Partition flags (QWORD) */
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#define GPTE_Name 56 /* GPT PTE: Partition name */
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/* Post process on fatal error in the file operations */
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#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
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/* Re-entrancy related */
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#if FF_FS_REENTRANT
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#if FF_USE_LFN == 1
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#error Static LFN work area cannot be used in thread-safe configuration
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#endif
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#ifdef __LITEOS_M__
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#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
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#else
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#define LEAVE_FF(fs, res) { (void)fs; return res; }
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#endif
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#else
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#define LEAVE_FF(fs, res) return res
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#endif
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/* Definitions of sector size */
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#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)
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#error Wrong sector size configuration
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#endif
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/* File lock controls */
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#if FF_FS_LOCK
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#if FF_FS_READONLY
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#error FF_FS_LOCK must be 0 at read-only configuration
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#endif
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typedef struct {
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FATFS* fs; /* Object ID 1, volume (NULL:blank entry) */
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DWORD clu; /* Object ID 2, containing directory (0:root) */
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DWORD ofs; /* Object ID 3, offset in the directory */
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UINT ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
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} FILESEM;
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#endif
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/* SBCS up-case tables (\x80-\xFF) */
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#define TBL_CT437 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
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0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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#define TBL_CT720 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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#define TBL_CT737 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
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0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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#define TBL_CT771 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
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0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
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0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
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#define TBL_CT775 {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
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0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
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0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
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0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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#define TBL_CT850 {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
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0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
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0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
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0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
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0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
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0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
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#define TBL_CT852 {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
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0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
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0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
|
|
#define TBL_CT855 {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
|
|
0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
|
|
0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
|
|
0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
|
|
0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT857 {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
|
|
0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
|
|
0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT860 {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
|
|
0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT861 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
|
|
0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
|
|
0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT862 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT863 {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
|
|
0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
|
|
0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT864 {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
|
|
0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT865 {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
|
|
0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
|
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT866 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
|
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
|
|
0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
|
|
#define TBL_CT869 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
|
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
|
|
0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
|
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
|
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
|
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
|
|
0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
|
|
0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
|
|
|
|
|
|
/* DBCS code range |----- 1st byte -----| |----------- 2nd byte -----------| */
|
|
/* <------> <------> <------> <------> <------> */
|
|
#define TBL_DC932 {0x81, 0x9F, 0xE0, 0xFC, 0x40, 0x7E, 0x80, 0xFC, 0x00, 0x00}
|
|
#define TBL_DC936 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0x80, 0xFE, 0x00, 0x00}
|
|
#define TBL_DC949 {0x81, 0xFE, 0x00, 0x00, 0x41, 0x5A, 0x61, 0x7A, 0x81, 0xFE}
|
|
#define TBL_DC950 {0x81, 0xFE, 0x00, 0x00, 0x40, 0x7E, 0xA1, 0xFE, 0x00, 0x00}
|
|
|
|
|
|
/* Macros for table definitions */
|
|
#define MERGE_2STR(a, b) a ## b
|
|
#define MKCVTBL(hd, cp) MERGE_2STR(hd, cp)
|
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------------------
|
|
|
|
Module Private Work Area
|
|
|
|
---------------------------------------------------------------------------*/
|
|
/* Remark: Variables defined here without initial value shall be guaranteed
|
|
/ zero/null at start-up. If not, the linker option or start-up routine is
|
|
/ not compliance with C standard. */
|
|
|
|
/*--------------------------------*/
|
|
/* File/Volume controls */
|
|
/*--------------------------------*/
|
|
|
|
#if FF_VOLUMES < 1
|
|
#error Wrong FF_VOLUMES setting
|
|
#endif
|
|
static FATFS* FatFs[FF_VOLUMES]; /* Pointer to the filesystem objects (logical drives) */
|
|
static WORD Fsid; /* Filesystem mount ID */
|
|
UINT time_status = SYSTEM_TIME_ENABLE; /*system time status */
|
|
|
|
#if FF_FS_RPATH != 0 && FF_VOLUMES >= 2
|
|
static BYTE CurrVol; /* Current drive */
|
|
#endif
|
|
|
|
#if FF_FS_LOCK != 0
|
|
static FILESEM Files[FF_FS_LOCK]; /* Open object lock semaphores */
|
|
#endif
|
|
|
|
#if FF_STR_VOLUME_ID
|
|
#ifdef FF_VOLUME_STRS
|
|
static const char* const VolumeStr[FF_VOLUMES] = {FF_VOLUME_STRS}; /* Pre-defined volume ID */
|
|
#endif
|
|
#endif
|
|
|
|
/*--------------------------------*/
|
|
/* Code conversion tables */
|
|
/*--------------------------------*/
|
|
|
|
#if FF_CODE_PAGE == 0 /* Run-time code page configuration */
|
|
#define CODEPAGE CodePage
|
|
static WORD CodePage; /* Current code page */
|
|
static const BYTE* ExCvt; /* Ptr to SBCS up-case table Ct???[] (null:not used) */
|
|
static const BYTE* DbcTbl; /* Ptr to DBCS code range table Dc???[] (null:not used) */
|
|
|
|
static const BYTE Ct437[] = TBL_CT437;
|
|
static const BYTE Ct720[] = TBL_CT720;
|
|
static const BYTE Ct737[] = TBL_CT737;
|
|
static const BYTE Ct771[] = TBL_CT771;
|
|
static const BYTE Ct775[] = TBL_CT775;
|
|
static const BYTE Ct850[] = TBL_CT850;
|
|
static const BYTE Ct852[] = TBL_CT852;
|
|
static const BYTE Ct855[] = TBL_CT855;
|
|
static const BYTE Ct857[] = TBL_CT857;
|
|
static const BYTE Ct860[] = TBL_CT860;
|
|
static const BYTE Ct861[] = TBL_CT861;
|
|
static const BYTE Ct862[] = TBL_CT862;
|
|
static const BYTE Ct863[] = TBL_CT863;
|
|
static const BYTE Ct864[] = TBL_CT864;
|
|
static const BYTE Ct865[] = TBL_CT865;
|
|
static const BYTE Ct866[] = TBL_CT866;
|
|
static const BYTE Ct869[] = TBL_CT869;
|
|
static const BYTE Dc932[] = TBL_DC932;
|
|
static const BYTE Dc936[] = TBL_DC936;
|
|
static const BYTE Dc949[] = TBL_DC949;
|
|
static const BYTE Dc950[] = TBL_DC950;
|
|
|
|
#elif FF_CODE_PAGE < 900 /* Static code page configuration (SBCS) */
|
|
#define CODEPAGE FF_CODE_PAGE
|
|
static const BYTE ExCvt[] = MKCVTBL(TBL_CT, FF_CODE_PAGE);
|
|
|
|
#else /* Static code page configuration (DBCS) */
|
|
#define CODEPAGE FF_CODE_PAGE
|
|
static const BYTE DbcTbl[] = MKCVTBL(TBL_DC, FF_CODE_PAGE);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------------------
|
|
|
|
Module Private Functions
|
|
|
|
---------------------------------------------------------------------------*/
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Load/Store multi-byte word in the FAT structure */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */
|
|
{
|
|
WORD rv;
|
|
|
|
rv = ptr[1];
|
|
rv = rv << 8 | ptr[0];
|
|
return rv;
|
|
}
|
|
|
|
DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */
|
|
{
|
|
DWORD rv;
|
|
|
|
rv = ptr[3];
|
|
rv = rv << 8 | ptr[2];
|
|
rv = rv << 8 | ptr[1];
|
|
rv = rv << 8 | ptr[0];
|
|
return rv;
|
|
}
|
|
|
|
#if !FF_FS_READONLY
|
|
void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */
|
|
{
|
|
*ptr++ = (BYTE)val; val >>= 8;
|
|
*ptr++ = (BYTE)val;
|
|
}
|
|
|
|
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;
|
|
}
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* String functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
/* Copy memory to memory */
|
|
void mem_cpy (void* dst, const void* src, UINT cnt)
|
|
{
|
|
BYTE *d = (BYTE*)dst;
|
|
const BYTE *s = (const BYTE*)src;
|
|
|
|
if (cnt != 0) {
|
|
do {
|
|
*d++ = *s++;
|
|
} while (--cnt);
|
|
}
|
|
}
|
|
|
|
|
|
/* Fill memory block */
|
|
void mem_set (void* dst, int val, UINT cnt)
|
|
{
|
|
BYTE *d = (BYTE*)dst;
|
|
|
|
do {
|
|
*d++ = (BYTE)val;
|
|
} while (--cnt);
|
|
}
|
|
|
|
|
|
/* Compare memory block */
|
|
static int mem_cmp (const void* dst, const void* src, UINT cnt) /* ZR:same, NZ:different */
|
|
{
|
|
const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
|
|
int r = 0;
|
|
|
|
do {
|
|
r = *d++ - *s++;
|
|
} while (--cnt && r == 0);
|
|
|
|
return r;
|
|
}
|
|
|
|
|
|
/* Check if chr is contained in the string */
|
|
static int chk_chr (const char* str, int chr) /* NZ:contained, ZR:not contained */
|
|
{
|
|
while (*str && *str != chr) str++;
|
|
return *str;
|
|
}
|
|
|
|
|
|
/* Test if the byte is DBC 1st byte */
|
|
static int dbc_1st (BYTE c)
|
|
{
|
|
#if FF_CODE_PAGE == 0 /* Variable code page */
|
|
if (DbcTbl && c >= DbcTbl[0]) {
|
|
if (c <= DbcTbl[1]) return 1; /* 1st byte range 1 */
|
|
if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1; /* 1st byte range 2 */
|
|
}
|
|
#elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */
|
|
if (c >= DbcTbl[0]) {
|
|
if (c <= DbcTbl[1]) return 1;
|
|
if (c >= DbcTbl[2] && c <= DbcTbl[3]) return 1;
|
|
}
|
|
#else /* SBCS fixed code page */
|
|
if (c != 0) return 0; /* Always false */
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Test if the byte is DBC 2nd byte */
|
|
static int dbc_2nd (BYTE c)
|
|
{
|
|
#if FF_CODE_PAGE == 0 /* Variable code page */
|
|
if (DbcTbl && c >= DbcTbl[4]) {
|
|
if (c <= DbcTbl[5]) return 1; /* 2nd byte range 1 */
|
|
if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1; /* 2nd byte range 2 */
|
|
if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1; /* 2nd byte range 3 */
|
|
}
|
|
#elif FF_CODE_PAGE >= 900 /* DBCS fixed code page */
|
|
if (c >= DbcTbl[4]) {
|
|
if (c <= DbcTbl[5]) return 1;
|
|
if (c >= DbcTbl[6] && c <= DbcTbl[7]) return 1;
|
|
if (c >= DbcTbl[8] && c <= DbcTbl[9]) return 1;
|
|
}
|
|
#else /* SBCS fixed code page */
|
|
if (c != 0) return 0; /* Always false */
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
#if FF_USE_LFN
|
|
|
|
/* Get a 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;
|
|
const TCHAR *p = *str;
|
|
|
|
#if FF_LFN_UNICODE == 1 /* UTF-16 input */
|
|
WCHAR wc;
|
|
|
|
uc = *p++; /* Get a unit */
|
|
if (IsSurrogate(uc)) { /* Surrogate? */
|
|
wc = *p++; /* Get low surrogate */
|
|
if (!IsSurrogateH(uc) || !IsSurrogateL(wc)) return 0xFFFFFFFF; /* Wrong surrogate? */
|
|
uc = uc << 16 | wc;
|
|
}
|
|
|
|
#elif FF_LFN_UNICODE == 2 /* UTF-8 input */
|
|
BYTE b;
|
|
int nf;
|
|
|
|
uc = (BYTE)*p++; /* Get 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 */
|
|
}
|
|
|
|
#elif FF_LFN_UNICODE == 3 /* UTF-32 input */
|
|
uc = (TCHAR)*p++; /* Get a unit */
|
|
if (uc >= 0x110000 || IsSurrogate(uc)) return 0xFFFFFFFF; /* Wrong code? */
|
|
if (uc >= 0x010000) uc = 0xD800DC00 | ((uc - 0x10000) << 6 & 0x3FF0000) | (uc & 0x3FF); /* Make a surrogate pair if needed */
|
|
|
|
#else /* ANSI/OEM input */
|
|
BYTE b;
|
|
WCHAR wc;
|
|
|
|
wc = (BYTE)*p++; /* Get a byte */
|
|
if (dbc_1st((BYTE)wc)) { /* Is it a DBC 1st byte? */
|
|
b = (BYTE)*p++; /* Get 2nd byte */
|
|
if (!dbc_2nd(b)) return 0xFFFFFFFF; /* Invalid code? */
|
|
wc = (wc << 8) + b; /* Make a DBC */
|
|
}
|
|
if (wc != 0) {
|
|
wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM ==> Unicode */
|
|
if (wc == 0) return 0xFFFFFFFF; /* Invalid code? */
|
|
}
|
|
uc = wc;
|
|
|
|
#endif
|
|
*str = p; /* Next read pointer */
|
|
return uc;
|
|
}
|
|
|
|
|
|
/* Store a Unicode char in defined API encoding */
|
|
static UINT 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 */
|
|
)
|
|
{
|
|
#if FF_LFN_UNICODE == 1 /* UTF-16 output */
|
|
WCHAR hs, wc;
|
|
|
|
hs = (WCHAR)(chr >> 16);
|
|
wc = (WCHAR)chr;
|
|
if (hs == 0) { /* Single encoding unit? */
|
|
if (szb < 1 || IsSurrogate(wc)) return 0; /* Buffer overflow or wrong code? */
|
|
*buf = wc;
|
|
return 1;
|
|
}
|
|
if (szb < 2 || !IsSurrogateH(hs) || !IsSurrogateL(wc)) return 0; /* Buffer overflow or wrong surrogate? */
|
|
*buf++ = hs;
|
|
*buf++ = wc;
|
|
return 2;
|
|
|
|
#elif FF_LFN_UNICODE == 2 /* UTF-8 output */
|
|
DWORD hc;
|
|
|
|
if (chr < 0x80) { /* Single byte code? */
|
|
if (szb < 1) return 0; /* Buffer overflow? */
|
|
*buf = (TCHAR)chr;
|
|
return 1;
|
|
}
|
|
if (chr < 0x800) { /* 2-byte sequence? */
|
|
if (szb < 2) return 0; /* Buffer overflow? */
|
|
*buf++ = (TCHAR)(0xC0 | (chr >> 6 & 0x1F));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
|
|
return 2;
|
|
}
|
|
if (chr < 0x10000) { /* 3-byte sequence? */
|
|
if (szb < 3 || IsSurrogate(chr)) return 0; /* Buffer overflow or wrong code? */
|
|
*buf++ = (TCHAR)(0xE0 | (chr >> 12 & 0x0F));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
|
|
return 3;
|
|
}
|
|
/* 4-byte sequence */
|
|
if (szb < 4) return 0; /* Buffer overflow? */
|
|
hc = ((chr & 0xFFFF0000) - 0xD8000000) >> 6; /* Get high 10 bits */
|
|
chr = (chr & 0xFFFF) - 0xDC00; /* Get low 10 bits */
|
|
if (hc >= 0x100000 || chr >= 0x400) return 0; /* Wrong surrogate? */
|
|
chr = (hc | chr) + 0x10000;
|
|
*buf++ = (TCHAR)(0xF0 | (chr >> 18 & 0x07));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 12 & 0x3F));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 6 & 0x3F));
|
|
*buf++ = (TCHAR)(0x80 | (chr >> 0 & 0x3F));
|
|
return 4;
|
|
|
|
#elif FF_LFN_UNICODE == 3 /* UTF-32 output */
|
|
DWORD hc;
|
|
|
|
if (szb < 1) return 0; /* Buffer overflow? */
|
|
if (chr >= 0x10000) { /* Out of BMP? */
|
|
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)chr;
|
|
return 1;
|
|
|
|
#else /* ANSI/OEM output */
|
|
WCHAR wc;
|
|
|
|
wc = ff_uni2oem(chr, CODEPAGE);
|
|
if (wc >= 0x100) { /* Is this a DBC? */
|
|
if (szb < 2) return 0;
|
|
*buf++ = (char)(wc >> 8); /* Store DBC 1st byte */
|
|
*buf++ = (TCHAR)wc; /* Store DBC 2nd byte */
|
|
return 2;
|
|
}
|
|
if (wc == 0 || szb < 1) return 0; /* Invalid char or buffer overflow? */
|
|
*buf++ = (TCHAR)wc; /* Store the character */
|
|
return 1;
|
|
#endif
|
|
}
|
|
#endif /* FF_USE_LFN */
|
|
|
|
|
|
#if FF_FS_REENTRANT
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Request/Release grant to access the volume */
|
|
/*-----------------------------------------------------------------------*/
|
|
int lock_fs ( /* 1:Ok, 0:timeout */
|
|
FATFS* fs /* Filesystem object */
|
|
)
|
|
{
|
|
return (fs && ff_req_grant(&fs->sobj)) ? 1 : 0;
|
|
}
|
|
|
|
|
|
void unlock_fs (
|
|
FATFS* fs, /* Filesystem object */
|
|
FRESULT res /* Result code to be returned */
|
|
)
|
|
{
|
|
if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {
|
|
ff_rel_grant(&fs->sobj);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if FF_FS_LOCK
|
|
/*-----------------------------------------------------------------------*/
|
|
/* File shareing control functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT chk_share ( /* Check if the file can be accessed */
|
|
DIR* dp, /* Directory object pointing the file to be checked */
|
|
int acc /* Desired access type (0:Read mode open, 1:Write mode open, 2:Delete or rename) */
|
|
)
|
|
{
|
|
UINT i, be;
|
|
|
|
/* Search open object table for the object */
|
|
be = 0;
|
|
for (i = 0; i < FF_FS_LOCK; i++) {
|
|
if (Files[i].fs) { /* Existing entry */
|
|
if (Files[i].fs == dp->obj.fs && /* Check if the object matches with an open object */
|
|
Files[i].clu == dp->obj.sclust &&
|
|
Files[i].ofs == dp->dptr) break;
|
|
} else { /* Blank entry */
|
|
be = 1;
|
|
}
|
|
}
|
|
if (i == FF_FS_LOCK) { /* The object has not been opened */
|
|
return (!be && acc != 2) ? FR_TOO_MANY_OPEN_FILES : FR_OK; /* Is there a blank entry for new object? */
|
|
}
|
|
|
|
/* The object was opened. Reject any open against writing file and all write mode open */
|
|
return (acc != 0 || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
|
|
}
|
|
|
|
|
|
static int enq_share (void) /* Check if an entry is available for a new object */
|
|
{
|
|
UINT i;
|
|
|
|
for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ; /* Find a free entry */
|
|
return (i == FF_FS_LOCK) ? 0 : 1;
|
|
}
|
|
|
|
|
|
static UINT inc_share ( /* Increment object open counter and returns its index (0:Internal error) */
|
|
DIR* dp, /* Directory object pointing the file to register or increment */
|
|
int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
|
|
)
|
|
{
|
|
UINT i;
|
|
|
|
|
|
for (i = 0; i < FF_FS_LOCK; i++) { /* Find the object */
|
|
if (Files[i].fs == dp->obj.fs
|
|
&& Files[i].clu == dp->obj.sclust
|
|
&& Files[i].ofs == dp->dptr) break;
|
|
}
|
|
|
|
if (i == FF_FS_LOCK) { /* Not opened. Register it as new. */
|
|
for (i = 0; i < FF_FS_LOCK && Files[i].fs; i++) ; /* Find a free entry */
|
|
if (i == FF_FS_LOCK) return 0; /* No free entry to register (int err) */
|
|
Files[i].fs = dp->obj.fs;
|
|
Files[i].clu = dp->obj.sclust;
|
|
Files[i].ofs = dp->dptr;
|
|
Files[i].ctr = 0;
|
|
}
|
|
|
|
if (acc >= 1 && Files[i].ctr) return 0; /* Access violation (int err) */
|
|
|
|
Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
|
|
|
|
return i + 1; /* Index number origin from 1 */
|
|
}
|
|
|
|
|
|
static FRESULT dec_share ( /* Decrement object open counter */
|
|
UINT i /* Semaphore index (1..) */
|
|
)
|
|
{
|
|
UINT n;
|
|
FRESULT res;
|
|
|
|
|
|
if (--i < FF_FS_LOCK) { /* Index number origin from 0 */
|
|
n = Files[i].ctr;
|
|
if (n == 0x100) n = 0; /* If write mode open, delete the object semaphore */
|
|
if (n > 0) n--; /* Decrement read mode open count */
|
|
Files[i].ctr = n;
|
|
if (n == 0) { /* Delete the object semaphore if open count becomes zero */
|
|
Files[i].fs = 0; /* Free the entry <<<If this memory write operation is not in atomic, FF_FS_REENTRANT == 1 and FF_VOLUMES > 1, there is a potential error in this process >>> */
|
|
}
|
|
res = FR_OK;
|
|
} else {
|
|
res = FR_INT_ERR; /* Invalid index number */
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
static void clear_share ( /* Clear all lock entries of the volume */
|
|
FATFS* fs
|
|
)
|
|
{
|
|
UINT i;
|
|
|
|
for (i = 0; i < FF_FS_LOCK; i++) {
|
|
if (Files[i].fs == fs) Files[i].fs = 0;
|
|
}
|
|
}
|
|
|
|
static
|
|
FRESULT empty_lock(FATFS* fs) /* check lock entries is empty or not. */
|
|
{
|
|
UINT i;
|
|
|
|
for (i = 0; i < FF_FS_LOCK; i++) {
|
|
if (Files[i].fs == fs) return FR_LOCKED;
|
|
}
|
|
|
|
return FR_OK;
|
|
}
|
|
#endif /* FF_FS_LOCK */
|
|
|
|
FRESULT f_checkopenlock(int index) /* check lock entries is empty or not by index. */
|
|
{
|
|
#if FF_FS_LOCK != 0
|
|
if (FatFs[index])
|
|
return empty_lock(FatFs[index]);
|
|
#endif
|
|
return FR_OK;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Move/Flush disk access window in the filesystem object */
|
|
/*-----------------------------------------------------------------------*/
|
|
#if !FF_FS_READONLY
|
|
FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs /* Filesystem object */
|
|
)
|
|
{
|
|
FRESULT res = FR_OK;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
|
|
FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs, /* File system object */
|
|
LBA_t sect /* Sector LBA to make appearance in the fs->win[] */
|
|
)
|
|
{
|
|
FRESULT res = FR_OK;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
if (sect != fs->winsect) { /* Window offset changed? */
|
|
#if !FF_FS_READONLY
|
|
res = sync_window(fs); /* Flush the window */
|
|
#endif
|
|
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;
|
|
}
|
|
|
|
#ifndef __LITEOS_M__
|
|
FRESULT move_window_readdir ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs, /* File system object */
|
|
LBA_t sect /* Sector number to make appearance in the fs->win[] */
|
|
)
|
|
{
|
|
FRESULT res = FR_OK;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
if (sect != fs->winsect) { /* Window offset changed? */
|
|
#if !FF_FS_READONLY
|
|
res = sync_window(fs); /* Flush the window */
|
|
#endif
|
|
if (res == FR_OK) { /* Fill sector window with new data */
|
|
if (disk_read_readdir(fs->pdrv, fs->win, sect, 1) != RES_OK) {
|
|
sect = 0xFFFFFFFF; /* Invalidate window if read data is not valid */
|
|
res = FR_DISK_ERR;
|
|
}
|
|
fs->winsect = sect;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
#endif
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Synchronize filesystem and data on the storage */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT sync_fs ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS* fs /* Filesystem object */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
|
|
|
|
res = sync_window(fs);
|
|
if (res == FR_OK) {
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) { /* FAT32: Update FSInfo sector if needed */
|
|
/* Create FSInfo structure */
|
|
mem_set(fs->win, 0, SS(fs));
|
|
st_word(fs->win + BS_55AA, 0xAA55); /* Boot signature */
|
|
st_dword(fs->win + FSI_LeadSig, 0x41615252); /* Leading signature */
|
|
st_dword(fs->win + FSI_StrucSig, 0x61417272); /* Structure signature */
|
|
st_dword(fs->win + FSI_Free_Count, fs->free_clst); /* Number of free clusters */
|
|
st_dword(fs->win + FSI_Nxt_Free, fs->last_clst); /* Last allocated culuster */
|
|
fs->winsect = fs->volbase + 1; /* Write it into the FSInfo sector (Next to VBR) */
|
|
disk_write(fs->pdrv, fs->win, fs->winsect, 1);
|
|
fs->fsi_flag = 0;
|
|
}
|
|
/* Make sure that no pending write process in the lower layer */
|
|
if (disk_ioctl(fs->pdrv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get physical sector number from cluster number */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
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 an FAT entry */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */
|
|
FFOBJID* obj, /* Corresponding object */
|
|
DWORD clst /* Cluster number to get the value */
|
|
)
|
|
{
|
|
UINT wc, bc;
|
|
DWORD val;
|
|
FATFS *fs = obj->fs;
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT access - Change value of an FAT entry */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */
|
|
FATFS* fs, /* Corresponding filesystem object */
|
|
DWORD clst, /* FAT index number (cluster number) to be changed */
|
|
DWORD val /* New value to be set to the entry */
|
|
)
|
|
{
|
|
UINT bc;
|
|
BYTE *p;
|
|
FRESULT res = FR_INT_ERR;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
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;
|
|
val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);
|
|
st_dword(fs->win + clst * 4 % SS(fs), val);
|
|
fs->wflag = 1;
|
|
break;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT handling - Remove a cluster chain */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
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;
|
|
FATFS *fs = obj->fs;
|
|
#if FF_USE_TRIM
|
|
DWORD scl = clst, ecl = clst;
|
|
LBA_t rt[2];
|
|
#endif
|
|
|
|
if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */
|
|
|
|
/* Mark the previous cluster 'EOC' on the FAT if it exists */
|
|
if (pclst) {
|
|
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? */
|
|
res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */
|
|
if (res != FR_OK) return res;
|
|
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
|
|
fs->free_clst++;
|
|
fs->fsi_flag |= 1;
|
|
}
|
|
#else
|
|
/* Update free_clst for both virtual FATFS and parent FATFS */
|
|
if (fs->free_clst < fs->ct_clst && ISCHILD(fs) && ISVIRPART(fs))
|
|
fs->free_clst++;
|
|
/* Update FSINFO */
|
|
if (PARENTFS(fs)->free_clst < PARENTFS(fs)->n_fatent - 2) {
|
|
PARENTFS(fs)->free_clst++;
|
|
PARENTFS(fs)->fsi_flag |= 1;
|
|
}
|
|
#endif
|
|
#if FF_USE_TRIM
|
|
if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
|
|
ecl = nxt;
|
|
} else { /* End of contiguous cluster block */
|
|
rt[0] = clst2sect(fs, scl); /* Start of data area to be freed */
|
|
rt[1] = clst2sect(fs, ecl) + fs->csize - 1; /* End of data area to be freed */
|
|
disk_ioctl(fs->pdrv, CTRL_TRIM, rt); /* Inform storage device that the data in the block may be erased */
|
|
scl = ecl = nxt;
|
|
}
|
|
#endif
|
|
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 */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
|
|
FFOBJID* obj, /* Corresponding object */
|
|
DWORD clst /* Cluster# to stretch, 0:Create a new chain */
|
|
)
|
|
{
|
|
DWORD cs, ncl, scl;
|
|
FRESULT res;
|
|
FATFS *fs = obj->fs;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs) && (fs->st_clst == 0xFFFFFFFF || fs->ct_clst == 0xFFFFFFFF)) {
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
if (clst == 0) { /* Create a new chain */
|
|
scl = fs->last_clst; /* Suggested cluster to start to find */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
if (scl == 0 || scl >= fs->n_fatent)
|
|
scl = fs->st_clst - 1 ;
|
|
if (scl == 0 || scl < fs->st_clst || scl >= fs->st_clst + fs->ct_clst)
|
|
scl = fs->st_clst - 1;
|
|
} else
|
|
#endif
|
|
{
|
|
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 */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
/* Chain has already follow inside the virtual parition limit boundary */
|
|
if (cs < fs->st_clst + fs->ct_clst && cs >= fs->st_clst)
|
|
return cs; /* return the followed cluster */
|
|
/* Chain has already follow outside the virutal partition limit boundary */
|
|
if ((cs >= fs->st_clst + fs->ct_clst && cs < fs->n_fatent) || cs < fs->st_clst)
|
|
return 1; /* Denied the following cluster, abort ths operation */
|
|
} else
|
|
#endif
|
|
{
|
|
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 */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
/* Current cluster has reached the bottom boundary of the virtual partition */
|
|
if (ncl >= fs->st_clst + fs->ct_clst || ncl < fs->st_clst)
|
|
ncl = fs->st_clst;
|
|
} else
|
|
#endif
|
|
{
|
|
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? */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
cs = PARENTFS(fs)->last_clst; /* Start at suggested cluster if it is valid */
|
|
if (cs >= fs->st_clst && cs < fs->st_clst + fs->ct_clst) scl = cs;
|
|
} else
|
|
#endif
|
|
{
|
|
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 */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
/* Current cluster has reached the bottom boundary of the virtual partition */
|
|
if (ncl >= fs->st_clst + fs->ct_clst || ncl < fs->st_clst) {
|
|
ncl = fs->st_clst;
|
|
if (ncl > scl) return 0; /* No free cluster */
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
if (ncl >= fs->n_fatent) { /* Check wrap-around */
|
|
ncl = 2;
|
|
if (ncl > scl) return 0; /* No free cluster */
|
|
}
|
|
}
|
|
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. */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Update Last Cluster info for both parent FATFS and child FATFS */
|
|
if (ISVIRPART(fs)) {
|
|
fs->last_clst = ncl;
|
|
PARENTFS(fs)->last_clst = ncl;
|
|
if (fs->free_clst <= fs->ct_clst && ISCHILD(fs))
|
|
fs->free_clst--;
|
|
if (PARENTFS(fs)->free_clst <= PARENTFS(fs)->n_fatent - 2)
|
|
(PARENTFS(fs))->free_clst--;
|
|
PARENTFS(fs)->fsi_flag |= 1;
|
|
} else
|
|
#endif
|
|
{
|
|
fs->last_clst = ncl;
|
|
if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--;
|
|
fs->fsi_flag |= 1;
|
|
}
|
|
} else {
|
|
ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Generate error status */
|
|
}
|
|
|
|
return ncl; /* Return new cluster number or error status */
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
|
|
#if FF_USE_FASTSEEK
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT handling - Convert offset into cluster with link map table */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
|
|
FIL* fp, /* Pointer to the file object */
|
|
FSIZE_t ofs /* File offset to be converted to cluster# */
|
|
)
|
|
{
|
|
DWORD cl, ncl;
|
|
DWORD *tbl;
|
|
FATFS *fs = fp->obj.fs;
|
|
|
|
|
|
tbl = fp->cltbl + 1; /* Top of CLMT */
|
|
cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */
|
|
for (;;) {
|
|
ncl = *tbl++; /* Number of cluters in the fragment */
|
|
if (ncl == 0) return 0; /* End of table? (error) */
|
|
if (cl < ncl) break; /* In this fragment? */
|
|
cl -= ncl; tbl++; /* Next fragment */
|
|
}
|
|
return cl + *tbl; /* Return the cluster number */
|
|
}
|
|
|
|
#endif /* FF_USE_FASTSEEK */
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Fill a cluster with zeros */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#if !FF_FS_READONLY
|
|
static FRESULT dir_clear ( /* Returns FR_OK or FR_DISK_ERR */
|
|
FATFS *fs, /* Filesystem object */
|
|
DWORD clst /* Directory table to clear */
|
|
)
|
|
{
|
|
LBA_t sect;
|
|
UINT n, szb;
|
|
BYTE *ibuf;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Forced the fs point to its parents */
|
|
if (ISCHILD(fs)) fs = PARENTFS(fs);
|
|
#endif
|
|
|
|
if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */
|
|
sect = clst2sect(fs, clst); /* Top of the cluster */
|
|
fs->winsect = sect; /* Set window to top of the cluster */
|
|
mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */
|
|
#if FF_USE_LFN == 3 /* Quick table clear by using multi-secter write */
|
|
/* Allocate a temporary buffer */
|
|
for (szb = ((DWORD)fs->csize * SS(fs) >= MAX_MALLOC) ? MAX_MALLOC : fs->csize * SS(fs), ibuf = 0; szb > SS(fs) && (ibuf = ff_memalloc(szb)) == 0; szb /= 2) ;
|
|
if (szb > SS(fs)) { /* Buffer allocated? */
|
|
mem_set(ibuf, 0, szb);
|
|
szb /= SS(fs); /* Bytes -> Sectors */
|
|
for (n = 0; n < fs->csize && disk_write(fs->pdrv, ibuf, sect + n, szb) == RES_OK; n += szb) ; /* Fill the cluster with 0 */
|
|
ff_memfree(ibuf);
|
|
} else
|
|
#endif
|
|
{
|
|
ibuf = fs->win; szb = 1; /* Use window buffer (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;
|
|
}
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Set directory index */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT dir_sdi ( /* FR_OK(0):succeeded, !=0:error */
|
|
DIR* dp, /* Pointer to directory object */
|
|
DWORD ofs /* Offset of directory table */
|
|
)
|
|
{
|
|
DWORD csz, clst;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
if (ofs >= (DWORD)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 (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 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 */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */
|
|
#else
|
|
dp->dir = PARENTFS(fs)->win + (ofs % SS(PARENTFS(fs)));
|
|
#endif
|
|
return FR_OK;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Move directory table index next */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT dir_next ( /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
|
|
DIR* dp, /* Pointer to the directory object */
|
|
int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
|
|
)
|
|
{
|
|
DWORD ofs, clst;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
ofs = dp->dptr + SZDIRE; /* Next entry */
|
|
if (ofs >= (DWORD)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 !FF_FS_READONLY
|
|
if (!stretch) { /* If no stretch, report EOT */
|
|
dp->sect = 0; return FR_NO_FILE;
|
|
}
|
|
clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */
|
|
if (clst == 0) return FR_NO_SPACE_LEFT; /* 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 */
|
|
#else
|
|
if (!stretch) dp->sect = 0; /* (this line is to suppress compiler warning) */
|
|
dp->sect = 0; return FR_NO_FILE; /* Report EOT */
|
|
#endif
|
|
}
|
|
dp->clust = clst; /* Initialize data for new cluster */
|
|
dp->sect = clst2sect(fs, clst);
|
|
}
|
|
}
|
|
}
|
|
dp->dptr = ofs; /* Current entry */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */
|
|
#else
|
|
dp->dir = PARENTFS(fs)->win + (ofs % SS(PARENTFS(fs)));
|
|
#endif
|
|
return FR_OK;
|
|
}
|
|
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Reserve a block of directory entries */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
|
|
DIR* dp, /* Pointer to the directory object */
|
|
UINT n_ent /* Number of contiguous entries to allocate */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
UINT n;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
res = dir_sdi(dp, 0);
|
|
if (res == FR_OK) {
|
|
n = 0;
|
|
do {
|
|
res = move_window(fs, dp->sect);
|
|
if (res != FR_OK) break;
|
|
if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) { /* Is the entry free? */
|
|
if (++n == n_ent) break; /* Is a block of contiguous free entries found? */
|
|
} else {
|
|
n = 0; /* Not a free entry, restart to search */
|
|
}
|
|
res = dir_next(dp, 1); /* Next entry with table stretch enabled */
|
|
} while (res == FR_OK);
|
|
}
|
|
|
|
if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
|
|
return res;
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT: Directory handling - Load/Store start cluster number */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */
|
|
FATFS* fs, /* Pointer to the fs object */
|
|
const BYTE* dir /* Pointer to the key entry */
|
|
)
|
|
{
|
|
DWORD cl;
|
|
|
|
cl = ld_word(dir + DIR_FstClusLO);
|
|
if (fs->fs_type == FS_FAT32) {
|
|
cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;
|
|
}
|
|
|
|
return cl;
|
|
}
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
void st_clust (
|
|
FATFS* fs, /* Pointer to the fs object */
|
|
BYTE* dir, /* Pointer to the key entry */
|
|
DWORD cl /* Value to be set */
|
|
)
|
|
{
|
|
st_word(dir + DIR_FstClusLO, (WORD)cl);
|
|
if (fs->fs_type == FS_FAT32) {
|
|
st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
#if FF_USE_LFN
|
|
/*--------------------------------------------------------*/
|
|
/* FAT-LFN: Compare a part of file name with an LFN entry */
|
|
/*--------------------------------------------------------*/
|
|
|
|
static int cmp_lfn ( /* 1:matched, 0:not matched */
|
|
const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */
|
|
BYTE* dir /* Pointer to the directory entry containing the part of LFN */
|
|
)
|
|
{
|
|
UINT i, s;
|
|
WCHAR wc, uc;
|
|
|
|
|
|
if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */
|
|
|
|
i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
|
|
|
|
for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
|
|
uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
|
|
if (wc != 0) {
|
|
if (i >= FF_MAX_LFN + 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 */
|
|
}
|
|
|
|
|
|
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL
|
|
/*-----------------------------------------------------*/
|
|
/* FAT-LFN: Pick a part of file name from an LFN entry */
|
|
/*-----------------------------------------------------*/
|
|
|
|
static int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
|
|
WCHAR* lfnbuf, /* Pointer to the LFN working buffer */
|
|
BYTE* dir /* Pointer to the LFN entry */
|
|
)
|
|
{
|
|
UINT i, s;
|
|
WCHAR wc, uc;
|
|
|
|
|
|
if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO is 0 */
|
|
|
|
i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13; /* Offset in the LFN buffer */
|
|
|
|
for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */
|
|
uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */
|
|
if (wc != 0) {
|
|
if (i >= FF_MAX_LFN + 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 */
|
|
}
|
|
#endif
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------*/
|
|
/* FAT-LFN: Create an entry of LFN entries */
|
|
/*-----------------------------------------*/
|
|
|
|
static void put_lfn (
|
|
const WCHAR* lfn, /* Pointer to the LFN */
|
|
BYTE* dir, /* Pointer to the LFN entry to be created */
|
|
BYTE ord, /* LFN order (1-20) */
|
|
BYTE sum /* Checksum of the corresponding SFN */
|
|
)
|
|
{
|
|
UINT i, s;
|
|
WCHAR wc;
|
|
|
|
|
|
dir[LDIR_Chksum] = sum; /* Set checksum */
|
|
dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
|
|
dir[LDIR_Type] = 0;
|
|
st_word(dir + LDIR_FstClusLO, 0);
|
|
|
|
i = (ord - 1) * 13; /* Get offset in the LFN working buffer */
|
|
s = wc = 0;
|
|
do {
|
|
if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */
|
|
st_word(dir + LfnOfs[s], wc); /* Put it */
|
|
if (wc == 0) wc = 0xFFFF; /* Padding characters for 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 */
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
#endif /* FF_USE_LFN */
|
|
|
|
|
|
|
|
#if FF_USE_LFN && !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT-LFN: Create a Numbered SFN */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static void gen_numname (
|
|
BYTE* dst, /* Pointer to the buffer to store numbered SFN */
|
|
const BYTE* src, /* Pointer to SFN in directory form */
|
|
const WCHAR* lfn, /* Pointer to LFN */
|
|
UINT seq /* Sequence number */
|
|
)
|
|
{
|
|
BYTE ns[8], c;
|
|
UINT i, j;
|
|
WCHAR wc;
|
|
DWORD sreg;
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
/* Make suffix (~ + hexadecimal) */
|
|
i = 7;
|
|
do {
|
|
c = (BYTE)((seq % 16) + '0'); seq /= 16;
|
|
if (c > '9') c += 7;
|
|
ns[i--] = c;
|
|
} while (i && seq);
|
|
ns[i] = '~';
|
|
|
|
/* Append the suffix to the SFN body */
|
|
for (j = 0; j < i && dst[j] != ' '; j++) { /* Find the offset to append */
|
|
if (dbc_1st(dst[j])) { /* To avoid DBC break up */
|
|
if (j == i - 1) break;
|
|
j++;
|
|
}
|
|
}
|
|
do { /* Append the suffix */
|
|
dst[j++] = (i < 8) ? ns[i++] : ' ';
|
|
} while (j < 8);
|
|
}
|
|
#endif /* FF_USE_LFN && !FF_FS_READONLY */
|
|
|
|
|
|
|
|
#if FF_USE_LFN
|
|
/*-----------------------------------------------------------------------*/
|
|
/* FAT-LFN: Calculate checksum of an SFN entry */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static BYTE sum_sfn (
|
|
const BYTE* dir /* Pointer to the SFN entry */
|
|
)
|
|
{
|
|
BYTE sum = 0;
|
|
UINT n = 11;
|
|
|
|
do {
|
|
sum = (sum >> 1) + (sum << 7) + *dir++;
|
|
} while (--n);
|
|
return sum;
|
|
}
|
|
|
|
#endif /* FF_USE_LFN */
|
|
|
|
|
|
|
|
|
|
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 || FF_USE_LABEL
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Read an object from the directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#define DIR_READ_FILE(dp) dir_read(dp, 0)
|
|
#define DIR_READ_LABEL(dp) dir_read(dp, 1)
|
|
|
|
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, b;
|
|
#if FF_USE_LFN
|
|
BYTE ord = 0xFF, sum = 0xFF;
|
|
#endif
|
|
|
|
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 FF_USE_LFN /* LFN configuration */
|
|
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;
|
|
}
|
|
}
|
|
#else /* Non LFN configuration */
|
|
if (b != DDEM && b != '.' && attr != AM_LFN && (int)((attr & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */
|
|
break;
|
|
}
|
|
#endif
|
|
res = dir_next(dp, 0); /* Next entry */
|
|
if (res != FR_OK) break;
|
|
}
|
|
|
|
if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */
|
|
return res;
|
|
}
|
|
|
|
#endif /* FF_FS_MINIMIZE <= 1 || FF_USE_LABEL || FF_FS_RPATH >= 2 */
|
|
|
|
#ifndef __LITEOS_M__
|
|
FRESULT dir_read_massive (
|
|
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, b;
|
|
#if FF_USE_LFN
|
|
BYTE ord = 0xFF, sum = 0xFF;
|
|
#endif
|
|
|
|
while (dp->sect) {
|
|
res = move_window_readdir(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 FF_USE_LFN /* LFN configuration */
|
|
if (b == DDEM || b == '.' || (int)((attr & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */
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|
ord = 0xFF;
|
|
} else {
|
|
if (attr == AM_LFN) { /* An LFN entry is found */
|
|
if (b & LLEF) { /* Is it start of an LFN sequence? */
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|
sum = dp->dir[LDIR_Chksum];
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|
b &= (BYTE)~LLEF; ord = b;
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|
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;
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|
} else { /* An SFN entry is found */
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|
if (ord != 0 || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */
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|
dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
#else /* Non LFN configuration */
|
|
if (b != DDEM && b != '.' && attr != AM_LFN && (int)((attr & ~AM_ARC) == AM_VOL) == vol) { /* Is it a valid entry? */
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|
break;
|
|
}
|
|
#endif
|
|
res = dir_next(dp, 0); /* Next entry */
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|
if (res != FR_OK) break;
|
|
}
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|
|
|
if (res != FR_OK) dp->sect = 0; /* Terminate the read operation on error or EOT */
|
|
return res;
|
|
}
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|
#endif
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Find an object in the directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */
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|
DIR* dp /* Pointer to the directory object with the file name */
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|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs = dp->obj.fs;
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|
BYTE c;
|
|
#if FF_USE_LFN
|
|
BYTE a, ord, sum;
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|
#endif
|
|
|
|
res = dir_sdi(dp, 0); /* Rewind directory object */
|
|
if (res != FR_OK) return res;
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|
|
|
/* On the FAT/FAT32 volume */
|
|
#if FF_USE_LFN
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|
ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
|
#endif
|
|
do {
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|
res = move_window(fs, dp->sect);
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|
if (res != FR_OK) break;
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|
c = dp->dir[DIR_Name];
|
|
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
|
#if FF_USE_LFN /* LFN configuration */
|
|
dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;
|
|
if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
|
|
ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
|
} else {
|
|
if (a == AM_LFN) { /* An LFN entry is found */
|
|
if (!(dp->fn[NSFLAG] & NS_NOLFN)) {
|
|
if (c & LLEF) { /* Is it start of LFN sequence? */
|
|
sum = dp->dir[LDIR_Chksum];
|
|
c &= (BYTE)~LLEF; ord = c; /* LFN start order */
|
|
dp->blk_ofs = dp->dptr; /* Start offset of LFN */
|
|
}
|
|
/* Check validity of the LFN entry and compare it with given name */
|
|
ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
|
|
}
|
|
} else { /* An SFN entry is found */
|
|
if (ord == 0 && sum == sum_sfn(dp->dir)) break; /* LFN matched? */
|
|
if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */
|
|
ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
|
|
}
|
|
}
|
|
#else /* Non LFN configuration */
|
|
dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;
|
|
if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */
|
|
#endif
|
|
res = dir_next(dp, 0); /* Next entry */
|
|
} while (res == FR_OK);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Directory handling - Calculate the LFN entry of the directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DWORD dir_ofs (
|
|
DIR* dp
|
|
)
|
|
{
|
|
#if FF_USE_LFN
|
|
UINT nlen, nent;
|
|
DWORD entry;
|
|
for (nlen = 0; dp->obj.fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */
|
|
nent = (dp->fn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries of the lfn */
|
|
entry = dp->dptr - (nent - 1) * SZDIRE;
|
|
return entry;
|
|
#else
|
|
return dp->dptr;
|
|
#endif
|
|
}
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Register an object to the directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
|
|
DIR* dp /* Target directory with object name to be created */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs = dp->obj.fs;
|
|
#if FF_USE_LFN /* LFN configuration */
|
|
UINT n, len, n_ent;
|
|
BYTE sn[12], sum;
|
|
|
|
|
|
if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */
|
|
for (len = 0; fs->lfnbuf[len]; len++) ; /* 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. */
|
|
n_ent = (sn[NSFLAG] & NS_LFN) ? (len + 12) / 13 + 1 : 1; /* Number of entries to allocate */
|
|
res = dir_alloc(dp, n_ent); /* Allocate entries */
|
|
if (res == FR_OK && --n_ent) { /* Set LFN entry if needed */
|
|
res = dir_sdi(dp, dp->dptr - n_ent * 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)n_ent, sum);
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
res = dir_next(dp, 0); /* Next entry */
|
|
} while (res == FR_OK && --n_ent);
|
|
}
|
|
}
|
|
|
|
#else /* Non LFN configuration */
|
|
res = dir_alloc(dp, 1); /* Allocate an entry for SFN */
|
|
|
|
#endif
|
|
|
|
/* Set SFN entry */
|
|
if (res == FR_OK) {
|
|
res = move_window(fs, dp->sect);
|
|
if (res == FR_OK) {
|
|
mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */
|
|
mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */
|
|
#if FF_USE_LFN
|
|
dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */
|
|
#endif
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY && FF_FS_MINIMIZE == 0
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Remove an object from the directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
|
|
DIR* dp /* Directory object pointing the entry to be removed */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs = dp->obj.fs;
|
|
#if FF_USE_LFN /* LFN configuration */
|
|
DWORD last = dp->dptr;
|
|
res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */
|
|
if (res == FR_OK) {
|
|
do {
|
|
res = move_window(fs, dp->sect);
|
|
if (res != FR_OK) break;
|
|
dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted' */
|
|
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
if (dp->dptr >= last) break; /* If reached last entry then all entries of the object has been deleted. */
|
|
res = dir_next(dp, 0); /* Next entry */
|
|
} while (res == FR_OK);
|
|
if (res == FR_NO_FILE) res = FR_INT_ERR;
|
|
}
|
|
#else /* Non LFN configuration */
|
|
|
|
res = move_window(fs, dp->sect);
|
|
if (res == FR_OK) {
|
|
dp->dir[DIR_Name] = DDEM; /* Mark the entry 'deleted'.*/
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY && FF_FS_MINIMIZE == 0 */
|
|
|
|
|
|
|
|
#if FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get file information from directory entry */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
void get_fileinfo (
|
|
DIR* dp, /* Pointer to the directory object */
|
|
FILINFO* fno /* Pointer to the file information to be filled */
|
|
)
|
|
{
|
|
UINT si, di;
|
|
#if FF_USE_LFN
|
|
BYTE lcf;
|
|
WCHAR wc, hs;
|
|
FATFS *fs = dp->obj.fs;
|
|
UINT nw;
|
|
#else
|
|
TCHAR c;
|
|
#endif
|
|
|
|
|
|
fno->fname[0] = 0; /* Invaidate file info */
|
|
if (dp->sect == 0) return; /* Exit if read pointer has reached end of directory */
|
|
|
|
#if FF_USE_LFN /* LFN configuration */
|
|
if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */
|
|
si = di = 0;
|
|
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 */
|
|
}
|
|
nw = put_utf((DWORD)hs << 16 | wc, &fno->fname[di], FF_LFN_BUF - di); /* Store it in API encoding */
|
|
if (nw == 0) { /* Buffer overflow or wrong char? */
|
|
di = 0; break;
|
|
}
|
|
di += nw;
|
|
hs = 0;
|
|
}
|
|
if (hs != 0) di = 0; /* Broken surrogate pair? */
|
|
fno->fname[di] = 0; /* Terminate the LFN (null string means LFN is invalid) */
|
|
}
|
|
si = di = 0;
|
|
while (si < 11) { /* Get SFN from SFN entry */
|
|
wc = dp->dir[si++]; /* Get a char */
|
|
if (wc == ' ') continue; /* Skip padding spaces */
|
|
if (wc == RDDEM) wc = DDEM; /* Restore replaced DDEM character */
|
|
if (si == 9 && di < FF_SFN_BUF) fno->altname[di++] = '.'; /* Insert a . if extension is exist */
|
|
#if FF_LFN_UNICODE >= 1 /* Unicode output */
|
|
if (dbc_1st((BYTE)wc) && si != 8 && si != 11 && dbc_2nd(dp->dir[si])) { /* Make a DBC if needed */
|
|
wc = wc << 8 | dp->dir[si++];
|
|
}
|
|
wc = ff_oem2uni(wc, CODEPAGE); /* ANSI/OEM -> Unicode */
|
|
if (wc == 0) { /* Wrong char in the current code page? */
|
|
di = 0; break;
|
|
}
|
|
nw = put_utf(wc, &fno->altname[di], FF_SFN_BUF - di); /* Store it in API encoding */
|
|
if (nw == 0) { /* Buffer overflow? */
|
|
di = 0; break;
|
|
}
|
|
di += nw;
|
|
#else /* ANSI/OEM output */
|
|
fno->altname[di++] = (TCHAR)wc; /* Store it without any conversion */
|
|
#endif
|
|
}
|
|
fno->altname[di] = 0; /* Terminate the SFN (null string means SFN is invalid) */
|
|
|
|
if (fno->fname[0] == 0) { /* If LFN is invalid, altname[] needs to be copied to fname[] */
|
|
if (di == 0) { /* If LFN and SFN both are invalid, this object is 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. */
|
|
}
|
|
|
|
#else /* Non-LFN configuration */
|
|
si = di = 0;
|
|
while (si < 11) { /* Copy name body and extension */
|
|
c = (TCHAR)dp->dir[si++];
|
|
if (c == ' ') continue; /* Skip padding spaces */
|
|
if (c == RDDEM) c = DDEM; /* Restore replaced DDEM character */
|
|
if (si == 9) fno->fname[di++] = '.';/* Insert a . if extension is exist */
|
|
fno->fname[di++] = c;
|
|
}
|
|
fno->fname[di] = 0; /* Terminate the SFN */
|
|
#endif
|
|
|
|
fno->fattrib = dp->dir[DIR_Attr] & AM_MASK; /* 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 */
|
|
fno->sclst = ld_clust(fs, dp->dir); /* Start cluster */
|
|
}
|
|
|
|
#endif /* FF_FS_MINIMIZE <= 1 || FF_FS_RPATH >= 2 */
|
|
|
|
|
|
|
|
#if FF_USE_FIND && FF_FS_MINIMIZE <= 1
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Pattern matching */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#define FIND_RECURS 4 /* Maximum number of wildcard terms in the pattern to limit recursion */
|
|
|
|
|
|
static DWORD get_achar ( /* Get a character and advance ptr */
|
|
const TCHAR** ptr /* Pointer to pointer to the ANSI/OEM or Unicode string */
|
|
)
|
|
{
|
|
DWORD chr;
|
|
|
|
|
|
#if FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode input */
|
|
chr = tchar2uni(ptr);
|
|
if (chr == 0xFFFFFFFF) chr = 0; /* Wrong UTF encoding is recognized as end of the string */
|
|
chr = ff_wtoupper(chr);
|
|
|
|
#else /* ANSI/OEM input */
|
|
chr = (BYTE)*(*ptr)++; /* Get a byte */
|
|
if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */
|
|
#if FF_CODE_PAGE == 0
|
|
if (ExCvt && chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
|
|
#elif FF_CODE_PAGE < 900
|
|
if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */
|
|
#endif
|
|
#if FF_CODE_PAGE == 0 || FF_CODE_PAGE >= 900
|
|
if (dbc_1st((BYTE)chr)) { /* Get DBC 2nd byte if needed */
|
|
chr = dbc_2nd((BYTE)**ptr) ? chr << 8 | (BYTE)*(*ptr)++ : 0;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
return chr;
|
|
}
|
|
|
|
|
|
static int pattern_match ( /* 0:mismatched, 1:matched */
|
|
const TCHAR* pat, /* Matching pattern */
|
|
const TCHAR* nam, /* String to be tested */
|
|
UINT skip, /* Number of pre-skip chars (number of ?s, b8:infinite (* specified)) */
|
|
UINT recur /* Recursion count */
|
|
)
|
|
{
|
|
const TCHAR *pptr;
|
|
const TCHAR *nptr;
|
|
DWORD pchr, nchr;
|
|
UINT sk;
|
|
|
|
|
|
while ((skip & 0xFF) != 0) { /* Pre-skip name chars */
|
|
if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
|
|
skip--;
|
|
}
|
|
if (*pat == 0 && skip) return 1; /* Matched? (short circuit) */
|
|
|
|
do {
|
|
pptr = pat; nptr = nam; /* Top of pattern and name to match */
|
|
for (;;) {
|
|
if (*pptr == '\?' || *pptr == '*') { /* Wildcard term? */
|
|
if (recur == 0) return 0; /* Too many wildcard terms? */
|
|
sk = 0;
|
|
do { /* Analyze the wildcard term */
|
|
if (*pptr++ == '\?') {
|
|
sk++;
|
|
} else {
|
|
sk |= 0x100;
|
|
}
|
|
} while (*pptr == '\?' || *pptr == '*');
|
|
if (pattern_match(pptr, nptr, sk, recur - 1)) return 1; /* Test new branch (recursive call) */
|
|
nchr = *nptr; break; /* Branch mismatched */
|
|
}
|
|
pchr = get_achar(&pptr); /* Get a pattern char */
|
|
nchr = get_achar(&nptr); /* Get a name char */
|
|
if (pchr != nchr) break; /* Branch mismatched? */
|
|
if (pchr == 0) return 1; /* Branch matched? (matched at end of both strings) */
|
|
}
|
|
get_achar(&nam); /* nam++ */
|
|
} while (skip && nchr); /* Retry until end of name if infinite search is specified */
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* FF_USE_FIND && FF_FS_MINIMIZE <= 1 */
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Pick a top segment and create the object name in directory form */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */
|
|
DIR* dp, /* Pointer to the directory object */
|
|
const TCHAR** path /* Pointer to pointer to the segment in the path string */
|
|
)
|
|
{
|
|
#if FF_USE_LFN /* LFN configuration */
|
|
BYTE b, cf;
|
|
WCHAR wc;
|
|
WCHAR *lfn;
|
|
const TCHAR* p;
|
|
DWORD uc;
|
|
UINT i, ni, si, di;
|
|
|
|
|
|
/* 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 < ' ' || IsSeparator(wc)) break; /* Break if end of the path or a separator is found */
|
|
if (wc < 0x80 && chk_chr("*:<>|\"\?\x7F", (int)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 < ' ') { /* Stopped at end of the path? */
|
|
cf = NS_LAST; /* Last segment */
|
|
} else { /* Stopped at a separator */
|
|
while (IsSeparator(*p)) p++; /* Skip duplicated separators if exist */
|
|
cf = 0; /* Next segment may follow */
|
|
if (IsTerminator(*p)) cf = NS_LAST; /* Ignore terminating separator */
|
|
}
|
|
*path = p; /* Return pointer to the next segment */
|
|
|
|
#if FF_FS_RPATH != 0
|
|
if ((di == 1 && lfn[di - 1] == '.') ||
|
|
(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */
|
|
lfn[di] = 0;
|
|
for (i = 0; i < 11; i++) { /* Create dot name for SFN entry */
|
|
dp->fn[i] = (i < di) ? '.' : ' ';
|
|
}
|
|
dp->fn[i] = cf | NS_DOT; /* This is a dot entry */
|
|
return FR_OK;
|
|
}
|
|
#endif
|
|
while (di) { /* Snip off trailing spaces and dots if exist */
|
|
wc = lfn[di - 1];
|
|
if (wc != ' ' && wc != '.') break;
|
|
di--;
|
|
}
|
|
lfn[di] = 0; /* LFN is created into the working buffer */
|
|
if (di == 0) return FR_INVALID_NAME; /* Reject null name */
|
|
|
|
/* Create SFN in directory form */
|
|
for (si = 0; lfn[si] == ' '; si++) ; /* Remove leading spaces */
|
|
if (si > 0 || lfn[si] == '.') cf |= NS_LOSS | NS_LFN; /* Is there any leading space or dot? */
|
|
while (di > 0 && lfn[di - 1] != '.') di--; /* Find last dot (di<=si: no extension) */
|
|
|
|
mem_set(dp->fn, ' ', 11);
|
|
i = b = 0; ni = 8;
|
|
for (;;) {
|
|
wc = lfn[si++]; /* Get an LFN character */
|
|
if (wc == 0) break; /* Break on end of the LFN */
|
|
if (wc == ' ' || (wc == '.' && si != di)) { /* Remove embedded spaces and dots */
|
|
cf |= NS_LOSS | NS_LFN;
|
|
continue;
|
|
}
|
|
|
|
if (i >= ni || si == di) { /* End of field? */
|
|
if (ni == 11) { /* Name extension overflow? */
|
|
cf |= NS_LOSS | NS_LFN;
|
|
break;
|
|
}
|
|
if (si != di) cf |= NS_LOSS | NS_LFN; /* Name body overflow? */
|
|
if (si > di) break; /* No name extension? */
|
|
si = di; i = 8; ni = 11; b <<= 2; /* Enter name extension */
|
|
continue;
|
|
}
|
|
|
|
if (wc >= 0x80) { /* Is this an extended character? */
|
|
cf |= NS_LFN; /* LFN entry needs to be created */
|
|
#if FF_CODE_PAGE == 0
|
|
if (ExCvt) { /* In SBCS cfg */
|
|
wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */
|
|
if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */
|
|
} else { /* In DBCS cfg */
|
|
wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Up-convert ==> ANSI/OEM code */
|
|
}
|
|
#elif FF_CODE_PAGE < 900 /* In SBCS cfg */
|
|
wc = ff_uni2oem(wc, CODEPAGE); /* Unicode ==> ANSI/OEM code */
|
|
if (wc & 0x80) wc = ExCvt[wc & 0x7F]; /* Convert extended character to upper (SBCS) */
|
|
#else /* In DBCS cfg */
|
|
wc = ff_uni2oem(ff_wtoupper(wc), CODEPAGE); /* Unicode ==> Up-convert ==> ANSI/OEM code */
|
|
#endif
|
|
}
|
|
|
|
if (wc >= 0x100) { /* Is this a DBC? */
|
|
if (i >= ni - 1) { /* Field overflow? */
|
|
cf |= NS_LOSS | NS_LFN;
|
|
i = ni; continue; /* Next field */
|
|
}
|
|
dp->fn[i++] = (BYTE)(wc >> 8); /* Put 1st byte */
|
|
} else { /* SBC */
|
|
if (wc == 0 || chk_chr("+,;=[]", (int)wc)) { /* Replace illegal characters for SFN */
|
|
wc = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
|
|
} else {
|
|
if (IsUpper(wc)) { /* ASCII upper case? */
|
|
b |= 2;
|
|
}
|
|
if (IsLower(wc)) { /* ASCII lower case? */
|
|
b |= 1; wc -= 0x20;
|
|
}
|
|
}
|
|
}
|
|
dp->fn[i++] = (BYTE)wc;
|
|
}
|
|
|
|
if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
|
|
|
|
if (ni == 8) b <<= 2; /* Shift capital flags if no extension */
|
|
if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* LFN entry needs to be created if composite capitals */
|
|
if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */
|
|
if (b & 0x01) cf |= NS_EXT; /* NT flag (Extension has small capital letters only) */
|
|
if (b & 0x04) cf |= NS_BODY; /* NT flag (Body has small capital letters only) */
|
|
}
|
|
|
|
dp->fn[NSFLAG] = cf; /* SFN is created into dp->fn[] */
|
|
|
|
return FR_OK;
|
|
|
|
|
|
#else /* FF_USE_LFN : Non-LFN configuration */
|
|
BYTE c, d;
|
|
BYTE *sfn;
|
|
UINT ni, si, i;
|
|
const char *p;
|
|
|
|
/* Create file name in directory form */
|
|
p = *path; sfn = dp->fn;
|
|
mem_set(sfn, ' ', 11);
|
|
si = i = 0; ni = 8;
|
|
#if FF_FS_RPATH != 0
|
|
if (p[si] == '.') { /* Is this a dot entry? */
|
|
for (;;) {
|
|
c = (BYTE)p[si++];
|
|
if (c != '.' || si >= 3) break;
|
|
sfn[i++] = c;
|
|
}
|
|
if (!IsSeparator(c) && c > ' ') return FR_INVALID_NAME;
|
|
*path = p + si; /* Return pointer to the next segment */
|
|
sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */
|
|
return FR_OK;
|
|
}
|
|
#endif
|
|
for (;;) {
|
|
c = (BYTE)p[si++]; /* Get a byte */
|
|
if (c <= ' ') break; /* Break if end of the path name */
|
|
if (IsSeparator(c)) { /* Break if a separator is found */
|
|
while (IsSeparator(p[si])) si++; /* Skip duplicated separator if exist */
|
|
break;
|
|
}
|
|
if (c == '.' || i >= ni) { /* End of body or field overflow? */
|
|
if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Field overflow or invalid dot? */
|
|
i = 8; ni = 11; /* Enter file extension field */
|
|
continue;
|
|
}
|
|
#if FF_CODE_PAGE == 0
|
|
if (ExCvt && c >= 0x80) { /* Is SBC extended character? */
|
|
c = ExCvt[c & 0x7F]; /* To upper SBC extended character */
|
|
}
|
|
#elif FF_CODE_PAGE < 900
|
|
if (c >= 0x80) { /* Is SBC extended character? */
|
|
c = ExCvt[c & 0x7F]; /* To upper SBC extended character */
|
|
}
|
|
#endif
|
|
if (dbc_1st(c)) { /* Check if it is a DBC 1st byte */
|
|
d = (BYTE)p[si++]; /* Get 2nd byte */
|
|
if (!dbc_2nd(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */
|
|
sfn[i++] = c;
|
|
sfn[i++] = d;
|
|
} else { /* SBC */
|
|
if (chk_chr("*+,:;<=>[]|\"\?\x7F", (int)c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */
|
|
if (IsLower(c)) c -= 0x20; /* To upper */
|
|
sfn[i++] = c;
|
|
}
|
|
}
|
|
*path = &p[si]; /* Return pointer to the next segment */
|
|
if (i == 0) return FR_INVALID_NAME; /* Reject nul string */
|
|
|
|
if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
|
|
sfn[NSFLAG] = (c <= ' ' || p[si] <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */
|
|
|
|
return FR_OK;
|
|
#endif /* FF_USE_LFN */
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Follow a file path */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
|
|
DIR* dp, /* Directory object to return last directory and found object */
|
|
const TCHAR* path /* Full-path string to find a file or directory */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
BYTE ns;
|
|
FATFS *fs = dp->obj.fs;
|
|
|
|
|
|
#if FF_FS_RPATH != 0
|
|
if (!IsSeparator(*path) && (FF_STR_VOLUME_ID != 2 || !IsTerminator(*path))) { /* Without heading separator */
|
|
dp->obj.sclust = fs->cdir; /* Start at the current directory */
|
|
} else
|
|
#endif
|
|
{ /* With heading separator */
|
|
while (IsSeparator(*path)) path++; /* Strip separators */
|
|
dp->obj.sclust = 0; /* Start from the 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;
|
|
}
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
dp->obj.sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */
|
|
#else
|
|
dp->obj.sclust = ld_clust(PARENTFS(fs), PARENTFS(fs)->win + dp->dptr % SS(PARENTFS(fs)));
|
|
#endif
|
|
}
|
|
}
|
|
|
|
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;
|
|
const TCHAR *tt;
|
|
TCHAR tc;
|
|
int i;
|
|
int vol = -1;
|
|
#if FF_STR_VOLUME_ID /* Find string volume ID */
|
|
const char *sp;
|
|
char c;
|
|
#endif
|
|
|
|
tt = tp = *path;
|
|
if (!tp) return vol; /* Invalid path name? */
|
|
do { /* Find a colon in the path */
|
|
tc = *tt++;
|
|
} while (!IsTerminator(tc) && tc != ':');
|
|
|
|
if (tc == ':') { /* DOS/Windows style volume ID? */
|
|
i = *tp++ - '0';
|
|
if (IsDigit(*tp) && tp != tt) { /* Is there a numeric volume ID + colon? */
|
|
i = 10 * i + *tp - '0'; /* Get the LD number */
|
|
}
|
|
#if FF_STR_VOLUME_ID == 1 /* Arbitrary string is enabled */
|
|
else {
|
|
i = 0;
|
|
do {
|
|
sp = VolumeStr[i]; tp = *path; /* This string volume ID and path name */
|
|
do { /* Compare the volume ID with path name */
|
|
c = *sp++; tc = *tp++;
|
|
if (IsLower(c)) c -= 0x20;
|
|
if (IsLower(tc)) tc -= 0x20;
|
|
} while (c && (TCHAR)c == tc);
|
|
} while ((c || tp != tt) && ++i < FF_VOLUMES); /* Repeat for each id until pattern match */
|
|
}
|
|
#endif
|
|
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;
|
|
}
|
|
#if FF_STR_VOLUME_ID == 2 /* Unix style volume ID is enabled */
|
|
if (*tp == '/') { /* Is there a volume ID? */
|
|
while (*(tp + 1) == '/') tp++; /* Skip duplicated separator */
|
|
i = 0;
|
|
do {
|
|
tt = tp; sp = VolumeStr[i]; /* Path name and this string volume ID */
|
|
do { /* Compare the volume ID with path name */
|
|
c = *sp++; tc = *(++tt);
|
|
if (IsLower(c)) c -= 0x20;
|
|
if (IsLower(tc)) tc -= 0x20;
|
|
} while (c && (TCHAR)c == tc);
|
|
} while ((c || (tc != '/' && !IsTerminator(tc))) && ++i < FF_VOLUMES); /* Repeat for each ID until pattern match */
|
|
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;
|
|
}
|
|
#endif
|
|
/* No drive prefix is found */
|
|
#if FF_FS_RPATH != 0
|
|
vol = CurrVol; /* Default drive is current drive */
|
|
#else
|
|
vol = 0; /* Default drive is 0 */
|
|
#endif
|
|
return vol; /* Return the default drive */
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Load a sector and check if it is an FAT VBR */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
/* Check what the sector is */
|
|
|
|
UINT check_fs ( /* 0:FAT VBR, 1:exFAT VBR, 2:Not FAT and valid BS, 3:Not FAT and 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 */
|
|
)
|
|
{
|
|
WORD w, sign;
|
|
BYTE b;
|
|
|
|
|
|
fs->wflag = 0; fs->winsect = (LBA_t)0 - 1; /* Invaidate window */
|
|
if (move_window(fs, sect) != FR_OK) return 4; /* Load the boot sector */
|
|
sign = ld_word(fs->win + BS_55AA);
|
|
|
|
b = fs->win[BS_JmpBoot];
|
|
if (b == 0xEB || b == 0xE9 || b == 0xE8) { /* Valid JumpBoot code? (short jump, near jump or near call) */
|
|
if (sign == 0xAA55 && !mem_cmp(fs->win + BS_FilSysType32, "FAT32 ", 8)) {
|
|
return 0; /* It is an FAT32 VBR */
|
|
}
|
|
/* FAT volumes formatted with early MS-DOS lack boot signature and FAT string, so that we need to identify the FAT VBR without them. */
|
|
w = ld_word(fs->win + BPB_BytsPerSec);
|
|
if ((w & (w - 1)) == 0 && w >= FF_MIN_SS && w <= FF_MAX_SS) { /* Properness of sector size */
|
|
b = fs->win[BPB_SecPerClus];
|
|
if (b != 0 && (b & (b - 1)) == 0 /* Properness of cluster size */
|
|
&& (fs->win[BPB_NumFATs] == 1 || fs->win[BPB_NumFATs] == 2) /* Properness of number of FATs */
|
|
&& ld_word(fs->win + BPB_RootEntCnt) != 0 /* Properness of root entry count */
|
|
&& ld_word(fs->win + BPB_FATSz16) != 0) { /* Properness of FAT size */
|
|
return 0; /* Sector can be presumed an FAT VBR */
|
|
}
|
|
}
|
|
}
|
|
return sign == 0xAA55 ? 2 : 3; /* Not an FAT VBR (valid or invalid BS) */
|
|
}
|
|
|
|
|
|
/* 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 */
|
|
int vol /* Volume index to find */
|
|
)
|
|
{
|
|
BYTE *mbr_pt;
|
|
UINT fmt, i;
|
|
int extended_br;
|
|
int extended_pos = -1;
|
|
DWORD offset = 0;
|
|
LBA_t bsect;
|
|
|
|
bsect = 0;
|
|
fmt = check_fs(fs, 0); /* Load sector 0 and check if it is an FAT VBR as SFD */
|
|
if (fmt != 2 && (fmt >= 3 || LD2PT(vol) == 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 (fs->win[MBR_Table + 4] != 0xEE) { /* The partition type is MBR, not GPT */
|
|
/* Read MBR and EBR to get right boot sector. */
|
|
extended_br = LD2PT(vol) - 4;
|
|
if (extended_br > 0) {
|
|
for (i = 0; i < 4; i++) {
|
|
mbr_pt = fs->win + MBR_Table + i * SZ_PTE;
|
|
if (mbr_pt[4] == 0x0F || mbr_pt[4] == 0x05) extended_pos = i;
|
|
}
|
|
mbr_pt = fs->win + MBR_Table + extended_pos * SZ_PTE;
|
|
bsect = ld_dword(&mbr_pt[8]);
|
|
do {
|
|
mem_set(fs->win, 0, SS(fs));
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_read(LD2DI(vol), fs->win, bsect + offset, 1) != RES_OK) return FR_DISK_ERR;
|
|
#else
|
|
if (disk_read(LD2PD(vol), fs->win, bsect + offset, 1) != RES_OK) return FR_DISK_ERR;
|
|
#endif
|
|
mbr_pt = fs->win + MBR_Table;
|
|
offset = ld_dword(&mbr_pt[SZ_PTE + 8]);
|
|
} while (--extended_br);
|
|
}
|
|
i = LD2PT(vol); /* Partition number: 0:auto, 1-4:primary, >4:logical */
|
|
if (i) { /* Find an FAT volume */
|
|
#ifndef __LITEOS_M__
|
|
bsect = LD2PS(vol);
|
|
#else
|
|
i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */
|
|
if (i != 0) i--;
|
|
mbr_pt = fs->win + (MBR_Table + i * SZ_PTE);
|
|
bsect = mbr_pt[PTE_System] ? ld_dword(mbr_pt + PTE_StLba) : 0;
|
|
#endif
|
|
} else {
|
|
mbr_pt = fs->win + MBR_Table;
|
|
bsect = mbr_pt[4] ? ld_dword(&mbr_pt[8]) : 0;
|
|
}
|
|
}
|
|
else {
|
|
bsect = LD2PS(vol); /* Volume start sector */
|
|
}
|
|
fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */
|
|
|
|
return fmt;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Determine logical drive number and mount the volume if needed */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
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 /* Desiered access mode to check write protection */
|
|
)
|
|
{
|
|
int vol;
|
|
FATFS *fs;
|
|
DSTATUS stat;
|
|
LBA_t bsect;
|
|
DWORD tsect, sysect, fasize, nclst, szbfat;
|
|
WORD nrsv;
|
|
UINT fmt;
|
|
|
|
|
|
/* Get logical drive number */
|
|
*rfs = 0;
|
|
vol = get_ldnumber(path);
|
|
if (vol < 0) return FR_INVALID_DRIVE;
|
|
|
|
/* Check if the filesystem object is valid or not */
|
|
fs = FatFs[vol]; /* Get pointer to the filesystem object */
|
|
if (!fs) return FR_NOT_ENABLED; /* Is the filesystem object available? */
|
|
#if FF_FS_REENTRANT
|
|
if (!lock_fs(fs)) return FR_TIMEOUT; /* Lock the volume, and system if needed */
|
|
#endif
|
|
*rfs = fs; /* Return pointer to the filesystem object */
|
|
|
|
mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */
|
|
if (fs->fs_type != 0) { /* If the volume has been mounted */
|
|
stat = disk_status(fs->pdrv);
|
|
if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */
|
|
if (!FF_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check write protection if needed */
|
|
return FR_WRITE_PROTECTED;
|
|
}
|
|
return FR_OK; /* The filesystem object is already valid */
|
|
}
|
|
}
|
|
|
|
/* The filesystem object is not valid. */
|
|
/* Following code attempts to mount the volume. (find an FAT volume, analyze the BPB and initialize the filesystem object) */
|
|
|
|
fs->fs_type = 0; /* Invalidate the filesystem object */
|
|
fs->pdrv = LD2PD(vol); /* Volume hosting physical drive */
|
|
stat = disk_initialize(fs->pdrv); /* Initialize the volume hosting 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
|
|
|
|
if (fs->win == NULL) {
|
|
fs->win = (BYTE*) ff_memalloc(SS(fs));
|
|
if (fs->win == NULL)
|
|
return FR_NOT_ENOUGH_CORE;
|
|
}
|
|
/* Find an FAT volume on the hosting drive */
|
|
fmt = find_volume(fs, vol);
|
|
if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */
|
|
if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */
|
|
bsect = fs->winsect; /* Volume offset in the hosting physical drive */
|
|
|
|
/* 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) */
|
|
|
|
#if !FF_FS_READONLY
|
|
/* Get FSInfo if available */
|
|
fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */
|
|
fs->fsi_flag = 0x80;
|
|
#if (FF_FS_NOFSINFO & 3) != 3
|
|
if (fmt == FS_FAT32 /* Allow to update FSInfo only if BPB_FSInfo32 == 1 */
|
|
&& ld_word(fs->win + BPB_FSInfo32) == 1
|
|
&& move_window(fs, bsect + 1) == FR_OK)
|
|
{
|
|
fs->fsi_flag = 0;
|
|
if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSInfo data if available */
|
|
&& ld_dword(fs->win + FSI_LeadSig) == 0x41615252
|
|
&& ld_dword(fs->win + FSI_StrucSig) == 0x61417272)
|
|
{
|
|
#if (FF_FS_NOFSINFO & 1) == 0
|
|
fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
|
|
#endif
|
|
#if (FF_FS_NOFSINFO & 2) == 0
|
|
fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
|
|
#endif
|
|
}
|
|
}
|
|
#endif /* (FF_FS_NOFSINFO & 3) != 3 */
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
fs->fs_type = (BYTE)fmt;/* FAT sub-type (the filesystem object gets valid) */
|
|
fs->id = ++Fsid; /* Volume mount ID */
|
|
#if FF_USE_LFN == 1
|
|
fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
|
|
#endif
|
|
#if FF_FS_RPATH != 0
|
|
fs->cdir = 0; /* Initialize current directory */
|
|
#endif
|
|
#if FF_FS_LOCK /* Clear file lock semaphores */
|
|
clear_share(fs);
|
|
#endif
|
|
return FR_OK;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Check if the file/directory object is valid or not */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
static FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */
|
|
FFOBJID* obj, /* Pointer to the FFOBJID, the 1st member in the FIL/DIR structure, to check validity */
|
|
FATFS** rfs /* Pointer to pointer to the owner filesystem object to return */
|
|
)
|
|
{
|
|
FRESULT res = FR_INVALID_OBJECT;
|
|
|
|
|
|
if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) { /* Test if the object is valid */
|
|
#if FF_FS_REENTRANT
|
|
#ifdef __LITEOS_M__
|
|
if (lock_fs(obj->fs)) { /* Take a grant to access the volume */
|
|
if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the hosting phsical drive is kept initialized */
|
|
res = FR_OK;
|
|
} else {
|
|
unlock_fs(obj->fs, FR_OK); /* Invalidated volume, abort to access */
|
|
}
|
|
} else { /* Could not take */
|
|
res = FR_TIMEOUT;
|
|
}
|
|
#else
|
|
res = FR_OK;
|
|
#endif
|
|
#else
|
|
if (!(disk_status(obj->fs->pdrv) & STA_NOINIT)) { /* Test if the hosting phsical drive is kept initialized */
|
|
res = FR_OK;
|
|
}
|
|
#endif
|
|
}
|
|
*rfs = (res == FR_OK) ? obj->fs : 0; /* Return corresponding filesystem object if it is valid */
|
|
return res;
|
|
}
|
|
|
|
#define FAT12_END_OF_CLUSTER 0x00000FFF
|
|
#define FAT16_END_OF_CLUSTER 0x0000FFFF
|
|
#define FAT32_END_OF_CLUSTER 0x0FFFFFFF
|
|
#define DISK_ERROR 0xFFFFFFFF
|
|
|
|
static DWORD get_end_of_cluster(
|
|
FATFS *fs
|
|
)
|
|
{
|
|
switch(fs->fs_type) {
|
|
case FS_FAT12:
|
|
return FAT12_END_OF_CLUSTER;
|
|
case FS_FAT16:
|
|
return FAT16_END_OF_CLUSTER;
|
|
case FS_FAT32:
|
|
return FAT32_END_OF_CLUSTER;
|
|
default:
|
|
return DISK_ERROR;
|
|
}
|
|
}
|
|
|
|
static
|
|
UINT get_clustinfo(FIL* fp,
|
|
DWORD* fclust
|
|
)
|
|
{
|
|
UINT count = 0;
|
|
DWORD fsclust = 0, val;
|
|
DWORD last_clust = get_end_of_cluster(fp->obj.fs);
|
|
|
|
if (fp->obj.sclust != 0) {
|
|
val = fp->obj.sclust;
|
|
do {
|
|
fsclust = val;
|
|
val = get_fat(&fp->obj, fsclust);
|
|
count++;
|
|
} while ((val != last_clust) && (val != 1));
|
|
}
|
|
*fclust = fsclust;
|
|
return count;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
|
|
Public Functions (FatFs API)
|
|
|
|
----------------------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Mount/Unmount a Logical Drive */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_mount (
|
|
FATFS* fs, /* Pointer to the filesystem object to be registered (NULL:unmount)*/
|
|
const TCHAR* path, /* Logical drive number to be mounted/unmounted */
|
|
BYTE opt /* Mount option: 0=Do not mount (delayed mount), 1=Mount immediately */
|
|
)
|
|
{
|
|
FATFS *cfs;
|
|
int vol;
|
|
FRESULT res;
|
|
const TCHAR *rp = path;
|
|
|
|
|
|
/* Get volume ID (logical drive number) */
|
|
vol = get_ldnumber(&rp);
|
|
if (vol < 0) return FR_INVALID_DRIVE;
|
|
cfs = FatFs[vol]; /* Pointer to the filesystem object of the volume */
|
|
|
|
if (cfs) { /* Unregister current filesystem object if regsitered */
|
|
#if FF_FS_LOCK
|
|
clear_share(cfs);
|
|
#endif
|
|
#if FF_FS_REENTRANT /* Discard mutex of the current volume */
|
|
if (!ff_del_syncobj(&cfs->sobj)) return FR_INT_ERR;
|
|
#endif
|
|
cfs->fs_type = 0; /* Invalidate the filesystem object to be unregistered */
|
|
}
|
|
|
|
if (fs) { /* Register new filesystem object */
|
|
fs->fs_type = 0; /* Clear new fs object */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->vir_flag = FS_PARENT;
|
|
fs->parent_fs = fs;
|
|
fs->vir_amount = 0xFFFFFFFF;
|
|
fs->vir_avail = FS_VIRDISABLE;
|
|
#endif
|
|
#if FF_FS_REENTRANT /* Create a volume mutex */
|
|
if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
|
|
#endif
|
|
}
|
|
FatFs[vol] = fs; /* Register new fs object */
|
|
|
|
if (opt == 0) return FR_OK; /* Do not mount now, it will be mounted in subsequent file functions */
|
|
|
|
res = mount_volume(&path, &fs, 0); /* Force mounted the volume */
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#ifndef __LITEOS_M__
|
|
FRESULT init_fatobj(FATFS *fs, BYTE fmt, QWORD start_sector)
|
|
{
|
|
DWORD fasize;
|
|
DWORD tsect;
|
|
DWORD sysect;
|
|
DWORD nclst;
|
|
DWORD szbfat;
|
|
WORD nrsv;
|
|
|
|
if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) { /* (BPB_BytsPerSec must be equal to the physical sector size) */
|
|
return FR_NO_FILESYSTEM;
|
|
}
|
|
|
|
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 + FAT_RESERVED_NUM; /* Number of FAT entries */
|
|
fs->volbase = start_sector; /* Volume start sector */
|
|
fs->fatbase = start_sector + nrsv; /* FAT start sector */
|
|
fs->database = start_sector + 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 * FAT32_ENTRY_SIZE; /* (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) ? (fs->n_fatent * FAT16_ENTRY_SIZE) :
|
|
(fs->n_fatent * 3 / 2 + (fs->n_fatent & 1)); /* (Needed FAT size) */
|
|
}
|
|
if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) {
|
|
/* (BPB_FATSz must not be less than the size needed) */
|
|
return FR_NO_FILESYSTEM;
|
|
}
|
|
|
|
#if !FF_FS_READONLY
|
|
/* Get FSInfo if available */
|
|
fs->last_clst = fs->free_clst = DISK_ERROR; /* 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, start_sector + 1) == FR_OK) {
|
|
fs->fsi_flag = 0;
|
|
if (ld_word(fs->win + BS_55AA) == 0xAA55 /* Load FSInfo data if available */
|
|
&& ld_dword(fs->win + FSI_LeadSig) == 0x41615252
|
|
&& ld_dword(fs->win + FSI_StrucSig) == 0x61417272) {
|
|
#if (FF_FS_NOFSINFO & 1) == 0
|
|
fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
|
|
#endif
|
|
#if (FF_FS_NOFSINFO & 2) == 0
|
|
fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
|
|
#endif
|
|
}
|
|
}
|
|
#endif /* (FF_FS_NOFSINFO & 3) != 3 */
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
fs->fs_type = fmt; /* FAT sub-type */
|
|
fs->id = 0; /* Volume mount ID */
|
|
#if FF_USE_LFN == 1
|
|
fs->lfnbuf = LfnBuf; /* Static LFN working buffer */
|
|
#endif
|
|
#if FF_FS_RPATH != 0
|
|
fs->cdir = 0; /* Initialize current directory */
|
|
#endif
|
|
return FR_OK;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __LITEOS_M__
|
|
FRESULT find_fat_partition(FATFS *fs, los_part *part, BYTE *format, QWORD *start_sector)
|
|
{
|
|
DWORD offset = 0;
|
|
QWORD bsect;
|
|
int extended_br;
|
|
int extended_pos = -1;
|
|
int i;
|
|
BYTE fmt;
|
|
BYTE *pt;
|
|
|
|
bsect = 0;
|
|
fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT-VBR as SFD */
|
|
if (fmt == VBR_BS_NOT_FAT ||
|
|
(fmt < VBR_BS_NOT_FAT && part->part_no_mbr != 0)) { /* Not an FAT-VBR or forced partition number */
|
|
if (fs->win[MBR_Table + PTE_System] != GPT_PROTECTIVE_MBR) { /* The partition type is GPT, not MBR */
|
|
/* Read MBR and EBR to get right boot sector. */
|
|
extended_br = part->part_no_mbr - MBR_PRIMARY_PART_NUM;
|
|
if (extended_br > 0) {
|
|
for (i = 0; i < MBR_PRIMARY_PART_NUM; i++) {
|
|
pt = fs->win + MBR_Table + i * SZ_PTE;
|
|
if (pt[PTE_System] == EXTENDED_PARTITION_LBA || pt[PTE_System] == EXTENDED_PARTITION_CHS) {
|
|
extended_pos = i;
|
|
}
|
|
}
|
|
pt = fs->win + MBR_Table + extended_pos * SZ_PTE;
|
|
bsect = ld_dword(&pt[PTE_StLba]);
|
|
do {
|
|
mem_set(fs->win, 0, SS(fs));
|
|
if (disk_raw_read(part->disk_id, fs->win, bsect + offset, 1) != RES_OK) {
|
|
return FR_DISK_ERR;
|
|
}
|
|
pt = fs->win + MBR_Table;
|
|
offset = ld_dword(&pt[SZ_PTE + PTE_StLba]);
|
|
} while (--extended_br);
|
|
}
|
|
i = part->part_no_mbr; /* Partition number: 0:auto, 1-4:primary, >4:logical */
|
|
if (i) { /* Find an FAT volume */
|
|
bsect = part->sector_start;
|
|
} else {
|
|
pt = fs->win + MBR_Table;
|
|
bsect = pt[PTE_System] ? ld_dword(&pt[PTE_StLba]) : 0;
|
|
}
|
|
} else {
|
|
bsect = part->sector_start; /* Volume start sector */
|
|
}
|
|
fmt = bsect ? check_fs(fs, bsect) : VBR_BS_NOT_FAT; /* Check the partition */
|
|
}
|
|
|
|
if (fmt == VBR_DISK_ERR) { /* An error occured in the disk I/O layer */
|
|
return FR_DISK_ERR;
|
|
}
|
|
if (fmt >= VBR_BS_NOT_FAT) { /* No FAT volume is found */
|
|
return FR_NO_FILESYSTEM;
|
|
}
|
|
|
|
*format = fmt;
|
|
*start_sector = bsect;
|
|
return FR_OK;
|
|
}
|
|
#endif
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 open mode flags */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
DIR dj;
|
|
FATFS *fs;
|
|
#if FF_FS_REENTRANT
|
|
FATFS *fs_bak;
|
|
#endif
|
|
#if !FF_FS_READONLY
|
|
DWORD cl, bcs, clst, tm;
|
|
LBA_t sc;
|
|
#ifndef __LITEOS_M__
|
|
LBA_t dw;
|
|
#endif
|
|
FSIZE_t ofs;
|
|
#endif
|
|
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 | FA_SEEKEND;
|
|
res = mount_volume(&path, &fs, mode);
|
|
#if FF_FS_REENTRANT
|
|
fs_bak = fs;
|
|
#endif
|
|
if (res == FR_OK) {
|
|
dj.obj.fs = fs;
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
#if FF_FS_REENTRANT
|
|
if (ISCHILD(fs)) LEAVE_FF(fs_bak,FR_INVAILD_FATFS);
|
|
#else
|
|
if (ISCHILD(fs)) LEAVE_FF(fs,FR_INVAILD_FATFS);
|
|
#endif
|
|
if (ISVIRPART(fs)) {
|
|
/* Check the virtual partition top directory, and match the virtual fs */
|
|
res = follow_virentry(&dj.obj,path);
|
|
#if FF_FS_REENTRANT
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs_bak,res);
|
|
#else
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs,res);
|
|
#endif
|
|
if (res == FR_OK)
|
|
fs = dj.obj.fs;
|
|
}
|
|
#endif
|
|
INIT_NAMBUF(fs);
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
|
#if !FF_FS_READONLY /* Read/Write configuration */
|
|
if (res == FR_OK) {
|
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */
|
|
res = FR_INVALID_NAME;
|
|
}
|
|
#if FF_FS_LOCK
|
|
else {
|
|
res = chk_share(&dj, (mode & ~FA_READ) ? 1 : 0); /* Check if the file can be used */
|
|
}
|
|
#endif
|
|
}
|
|
/* Create or Open a file */
|
|
if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
|
|
if (res != FR_OK) { /* No file, create new */
|
|
if ((res == FR_NO_FILE) && (mode & FA_OPEN_ALWAYS)) { /* There is no file to open, create a new entry */
|
|
#if FF_FS_LOCK
|
|
res = enq_share() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
|
|
#else
|
|
res = dir_register(&dj);
|
|
#endif
|
|
}
|
|
if (res == FR_OK)
|
|
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_IS_DIR;
|
|
} else {
|
|
if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */
|
|
}
|
|
}
|
|
if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
|
|
tm = GET_FATTIME();
|
|
|
|
/* Clean directory info */
|
|
if (SYSTEM_TIME_ENABLE == time_status) {
|
|
st_dword(dj.dir + DIR_CrtTime, tm); /* Set created time */
|
|
st_dword(dj.dir + DIR_ModTime, tm); /* Set modified time */
|
|
} else if (SYSTEM_TIME_DISABLE == time_status) {
|
|
st_dword(dj.dir + DIR_CrtTime, 0); /* Set created time as 0*/
|
|
st_dword(dj.dir + DIR_ModTime, 0); /* Set modified time as 0*/
|
|
}
|
|
dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */
|
|
cl = ld_clust(fs, dj.dir); /* Get cluster chain */
|
|
st_clust(fs, dj.dir, 0); /* Reset file allocation info */
|
|
st_dword(dj.dir + DIR_FileSize, 0);
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
PARENTFS(fs)->wflag = 1;
|
|
#else
|
|
fs->wflag = 1;
|
|
#endif
|
|
if (cl != 0) { /* Remove the cluster chain if exist */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
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
|
|
dw = PARENTFS(fs)->winsect;
|
|
res = remove_chain(&dj.obj, cl, 0);
|
|
if (res == FR_OK) {
|
|
res = move_window(fs, dw);
|
|
if (ISVIRPART(fs) && ISCHILD(fs))
|
|
fs->last_clst = cl - 1; /* Reuse the cluster hole */
|
|
PARENTFS(fs)->last_clst = cl -1;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
else { /* Open an existing file */
|
|
if (res == FR_OK) { /* Is the object exsiting? */
|
|
if (dj.obj.attr & AM_DIR) { /* File open against a directory */
|
|
res = FR_IS_DIR;
|
|
} 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 */
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fp->dir_sect = PARENTFS(fs)->winsect; /* Pointer to the directory entry */
|
|
#else
|
|
fp->dir_sect = fs->winsect; /* Pointer to the directory entry */
|
|
#endif
|
|
fp->dir_ptr = dj.dir;
|
|
#if FF_FS_LOCK
|
|
fp->obj.lockid = inc_share(&dj, (mode & ~FA_READ) ? 1 : 0); /* Lock the file for this session */
|
|
if (fp->obj.lockid == 0) res = FR_INT_ERR;
|
|
#endif
|
|
}
|
|
#else /* R/O configuration */
|
|
if (res == FR_OK) {
|
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Is it origin directory itself? */
|
|
res = FR_INVALID_NAME;
|
|
} else {
|
|
if (dj.obj.attr & AM_DIR) { /* Is it a directory? */
|
|
res = FR_NO_FILE;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (res == FR_OK) {
|
|
|
|
fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */
|
|
fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
|
|
#if FF_USE_FASTSEEK
|
|
fp->cltbl = 0; /* Disable fast seek mode */
|
|
#endif
|
|
fp->obj.fs = fs; /* Validate the file object */
|
|
fp->obj.id = fs->id;
|
|
fp->flag = mode; /* Set file access mode */
|
|
fp->err = 0; /* Clear error flag */
|
|
fp->sect = 0; /* Invalidate current data sector */
|
|
fp->fptr = 0; /* Set file pointer top of the file */
|
|
#if !FF_FS_READONLY
|
|
#if !FF_FS_TINY
|
|
fp->buf = (BYTE*) ff_memalloc(SS(fs)); /* Init sector buffer */
|
|
if (fp->buf == NULL) {
|
|
res = FR_NOT_ENOUGH_CORE;
|
|
#if FF_FS_LOCK != 0
|
|
dec_share(fp->obj.lockid);
|
|
#endif
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
#endif
|
|
if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */
|
|
fp->fptr = fp->obj.objsize; /* Offset to seek */
|
|
bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */
|
|
clst = fp->obj.sclust; /* Follow the cluster chain */
|
|
for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {
|
|
clst = get_fat(&fp->obj, clst);
|
|
if (clst <= 1) res = FR_INT_ERR;
|
|
if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;
|
|
}
|
|
fp->clust = clst;
|
|
if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */
|
|
sc = clst2sect(fs, clst);
|
|
if (sc == 0) {
|
|
res = FR_INT_ERR;
|
|
} else {
|
|
fp->sect = sc + (DWORD)(ofs / SS(fs));
|
|
#if !FF_FS_TINY
|
|
if (disk_read(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
/* Scan the file cluster chain and check whether the virtual partition has been occuiped
|
|
more than two virtual partitions */
|
|
if (res == FR_OK && (mode & ~FA_READ) && ISVIRPART(fs) &&
|
|
(ISCHILD(fs) || (ISPARENT(fs) && fs->st_clst != 0xFFFFFFFF && fs->ct_clst != 0xFFFFFFFF))) {
|
|
clst = fp->obj.sclust;
|
|
cl = get_end_of_cluster(fs);
|
|
if (clst != 0) {
|
|
while (1) {
|
|
if (clst == 0xFFFFFFFF) {
|
|
res = FR_DISK_ERR;
|
|
break;
|
|
}
|
|
if (clst == cl) { /* Is the end of the cluster? */
|
|
res = FR_OK;
|
|
break;
|
|
}
|
|
if (clst < 2 || clst >= fs->n_fatent) {
|
|
res = FR_INT_ERR;
|
|
break;
|
|
}
|
|
if (clst < fs->st_clst || clst >= fs->st_clst + fs->ct_clst) {
|
|
res = FR_INT_ERR;
|
|
break;
|
|
}
|
|
clst = get_fat(&fp->obj, clst);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#if FF_FS_LOCK
|
|
if (res != FR_OK) dec_share(fp->obj.lockid); /* Decrement file open counter if seek failed */
|
|
#endif
|
|
|
|
FREE_NAMBUF();
|
|
}
|
|
|
|
if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Read File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_read (
|
|
FIL* fp, /* Open file to be read */
|
|
void* buff, /* Data buffer to store the read data */
|
|
UINT btr, /* Number of bytes to read */
|
|
UINT* br /* Number of bytes read */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD clst;
|
|
LBA_t sect;
|
|
FSIZE_t remain;
|
|
UINT rcnt, cc, csect;
|
|
BYTE *rbuff = (BYTE*)buff;
|
|
#ifndef __LITEOS_M__
|
|
UINT copy_ret;
|
|
#endif
|
|
|
|
*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_NO_EPERM); /* Check access mode */
|
|
remain = fp->obj.objsize - fp->fptr;
|
|
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
|
|
|
|
for ( ; btr > 0; btr -= rcnt, *br += rcnt, rbuff += rcnt, fp->fptr += rcnt) { /* Repeat until btr bytes read */
|
|
if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
|
csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
|
|
if (csect == 0) { /* On the cluster boundary? */
|
|
if (fp->fptr == 0) { /* On the top of the file? */
|
|
clst = fp->obj.sclust; /* Follow cluster chain from the origin */
|
|
} else { /* Middle or end of the file */
|
|
#if FF_USE_FASTSEEK
|
|
if (fp->cltbl) {
|
|
clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
|
|
} else
|
|
#endif
|
|
{
|
|
clst = get_fat(&fp->obj, fp->clust); /* Follow cluster chain on the FAT */
|
|
}
|
|
}
|
|
if (clst < 2) ABORT(fs, FR_INT_ERR);
|
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
fp->clust = clst; /* Update current cluster */
|
|
}
|
|
sect = clst2sect(fs, fp->clust); /* Get current sector */
|
|
if (sect == 0) ABORT(fs, FR_INT_ERR);
|
|
sect += csect;
|
|
cc = btr / SS(fs); /* When remaining bytes >= sector size, */
|
|
if (cc > 0) { /* Read maximum contiguous sectors directly */
|
|
if (csect + cc > fs->csize) { /* Clip at cluster boundary */
|
|
cc = fs->csize - csect;
|
|
}
|
|
if (disk_read(fs->pdrv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
#if !FF_FS_READONLY && FF_FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
|
|
#if FF_FS_TINY
|
|
if (fs->wflag && fs->winsect - sect < cc) {
|
|
#ifndef __LITEOS_M__
|
|
copy_ret = LOS_CopyFromKernel(rbuff + ((fs->winsect - sect) * SS(fs)), SS(fs), fs->win, SS(fs));
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
|
|
#endif
|
|
}
|
|
#else
|
|
if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
|
|
#ifndef __LITEOS_M__
|
|
copy_ret = LOS_CopyFromKernel(rbuff + ((fp->sect - sect) * SS(fs)), SS(fs), fp->buf, SS(fs));
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
|
|
#endif
|
|
}
|
|
#endif
|
|
#endif
|
|
rcnt = SS(fs) * cc; /* Number of bytes transferred */
|
|
continue;
|
|
}
|
|
#if !FF_FS_TINY
|
|
if (fp->sect != sect) { /* Load data sector if not in cache */
|
|
#if !FF_FS_READONLY
|
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
|
}
|
|
#endif
|
|
fp->sect = sect;
|
|
}
|
|
rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
|
|
if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */
|
|
#if FF_FS_TINY
|
|
if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
|
|
|
|
copy_ret = LOS_CopyFromKernel(rbuff, rcnt, fs->win + fp->fptr % SS(fs), rcnt);
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
/* Extract partial sector */
|
|
#ifndef __LITEOS_M__
|
|
copy_ret = LOS_CopyFromKernel(rbuff, rcnt, fp->buf + fp->fptr % SS(fs), rcnt);
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
LEAVE_FF(fs, FR_OK);
|
|
}
|
|
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Write File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_write (
|
|
FIL* fp, /* Open file to be written */
|
|
const void* buff, /* Data to be written */
|
|
UINT btw, /* Number of bytes to write */
|
|
UINT* bw /* Number of bytes written */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD clst;
|
|
LBA_t sect;
|
|
UINT wcnt, cc, csect;
|
|
const BYTE *wbuff = (const BYTE*)buff;
|
|
#ifndef __LITEOS_M__
|
|
UINT copy_ret;
|
|
#endif
|
|
|
|
*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_NO_EPERM); /* Check access mode */
|
|
|
|
/* Check fptr wrap-around (file size cannot reach 4 GiB at FAT volume) */
|
|
if ((DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {
|
|
btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);
|
|
}
|
|
|
|
for ( ; btw > 0; btw -= wcnt, *bw += wcnt, wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize) { /* Repeat until all data written */
|
|
if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
|
csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */
|
|
if (csect == 0) { /* On the cluster boundary? */
|
|
if (fp->fptr == 0) { /* On the top of the file? */
|
|
clst = fp->obj.sclust; /* Follow from the origin */
|
|
if (clst == 0) { /* If no cluster is allocated, */
|
|
clst = create_chain(&fp->obj, 0); /* create a new cluster chain */
|
|
}
|
|
} else { /* On the middle or end of the file */
|
|
#if FF_USE_FASTSEEK
|
|
if (fp->cltbl) {
|
|
clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
|
|
} else
|
|
#endif
|
|
{
|
|
clst = create_chain(&fp->obj, fp->clust); /* Follow or stretch cluster chain on the FAT */
|
|
}
|
|
}
|
|
if (clst == 0) { /* Could not allocate a new cluster (disk full) */
|
|
res = FR_NO_SPACE_LEFT;
|
|
break;
|
|
}
|
|
if (clst == 1) ABORT(fs, FR_INT_ERR);
|
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
fp->clust = clst; /* Update current cluster */
|
|
if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */
|
|
}
|
|
#if FF_FS_TINY
|
|
if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */
|
|
#else
|
|
if (fp->flag & FA_DIRTY) { /* Write-back sector cache */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
sect = clst2sect(fs, fp->clust); /* Get current sector */
|
|
if (sect == 0) ABORT(fs, FR_INT_ERR);
|
|
sect += csect;
|
|
cc = btw / SS(fs); /* When remaining bytes >= sector size, */
|
|
if (cc > 0) { /* Write maximum contiguous sectors directly */
|
|
if (csect + cc > fs->csize) { /* Clip at cluster boundary */
|
|
cc = fs->csize - csect;
|
|
}
|
|
if (disk_write(fs->pdrv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
#if FF_FS_MINIMIZE <= 2
|
|
#if FF_FS_TINY
|
|
if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
|
|
copy_ret = LOS_CopyToKernel(fs->win, SS(fs), wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
fs->wflag = 0;
|
|
}
|
|
#else
|
|
if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
|
|
#ifndef __LITEOS_M__
|
|
copy_ret = LOS_CopyToKernel(fp->buf, SS(fs), wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
|
|
#endif
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
#endif
|
|
wcnt = SS(fs) * cc; /* Number of bytes transferred */
|
|
continue;
|
|
}
|
|
#if FF_FS_TINY
|
|
if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */
|
|
if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);
|
|
fs->winsect = sect;
|
|
}
|
|
#else
|
|
if (fp->sect != sect && /* Fill sector cache with file data */
|
|
fp->fptr < fp->obj.objsize &&
|
|
disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) {
|
|
ABORT(fs, FR_DISK_ERR);
|
|
}
|
|
#endif
|
|
fp->sect = sect;
|
|
}
|
|
wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */
|
|
if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */
|
|
#if FF_FS_TINY
|
|
if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
|
|
|
|
copy_ret = LOS_CopyToKernel(fs->win + fp->fptr % SS(fs), wcnt, wbuff, wcnt);
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
fs->wflag = 1;
|
|
#else
|
|
#ifndef __LITEOS_M__
|
|
copy_ret = LOS_CopyToKernel(fp->buf + fp->fptr % SS(fs), wcnt, wbuff, wcnt);
|
|
if (copy_ret != EOK) ABORT(fs, FR_INVALID_PARAMETER);
|
|
#else
|
|
mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */
|
|
#endif
|
|
fp->flag |= FA_DIRTY;
|
|
#endif
|
|
|
|
}
|
|
|
|
fp->flag |= FA_MODIFIED; /* Set file change flag */
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Synchronize the File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_sync (
|
|
FIL* fp /* Open file to be synced */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD tm;
|
|
BYTE *dir;
|
|
|
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
|
if (res == FR_OK) {
|
|
if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */
|
|
#if !FF_FS_TINY
|
|
if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
/* Update the directory entry */
|
|
tm = GET_FATTIME(); /* Modified time */
|
|
|
|
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 */
|
|
if (SYSTEM_TIME_ENABLE == time_status) {
|
|
st_dword(dir + DIR_ModTime, tm); /* Update modified time */
|
|
} else if (SYSTEM_TIME_DISABLE == time_status) {
|
|
st_dword(dir + DIR_ModTime, 0); /* Update modified time */
|
|
}
|
|
st_word(dir + DIR_LstAccDate, 0);
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
|
|
res = sync_fs(fs); /* Restore it to the directory */
|
|
fp->flag &= (BYTE)~FA_MODIFIED;
|
|
}
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Close File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_close (
|
|
FIL* fp /* Open file to be closed */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
|
|
#if !FF_FS_READONLY
|
|
res = f_sync(fp); /* Flush cached data */
|
|
if (res == FR_OK || res == FR_DISK_ERR)
|
|
#endif
|
|
{
|
|
res = validate(&fp->obj, &fs); /* Lock volume */
|
|
if (res == FR_OK) {
|
|
#if FF_FS_LOCK
|
|
res = dec_share(fp->obj.lockid); /* Decrement file open counter */
|
|
if (res == FR_OK) fp->obj.fs = 0; /* Invalidate file object */
|
|
#else
|
|
fp->obj.fs = 0; /* Invalidate file object */
|
|
#endif
|
|
#if FF_FS_REENTRANT
|
|
unlock_fs(fs, FR_OK); /* Unlock volume */
|
|
#endif
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
#if FF_FS_RPATH >= 1
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Change Current Directory or Current Drive, Get Current Directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_chdrive (
|
|
const TCHAR* path /* Drive number to set */
|
|
)
|
|
{
|
|
int vol;
|
|
|
|
|
|
/* Get logical drive number */
|
|
vol = get_ldnumber(&path);
|
|
if (vol < 0) return FR_INVALID_DRIVE;
|
|
CurrVol = (BYTE)vol; /* Set it as current volume */
|
|
|
|
return FR_OK;
|
|
}
|
|
|
|
|
|
|
|
FRESULT f_chdir (
|
|
const TCHAR* path /* Pointer to the directory path */
|
|
)
|
|
{
|
|
#if FF_STR_VOLUME_ID == 2
|
|
UINT i;
|
|
#endif
|
|
FRESULT res;
|
|
DIR dj;
|
|
FATFS *fs;
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
res = mount_volume(&path, &fs, 0);
|
|
if (res == FR_OK) {
|
|
dj.obj.fs = fs;
|
|
INIT_NAMBUF(fs);
|
|
res = follow_path(&dj, path); /* Follow the path */
|
|
if (res == FR_OK) { /* Follow completed */
|
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Is it the start directory itself? */
|
|
fs->cdir = dj.obj.sclust;
|
|
} else {
|
|
if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */
|
|
fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */
|
|
} else {
|
|
res = FR_NO_PATH; /* Reached but a file */
|
|
}
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
if (res == FR_NO_FILE) res = FR_NO_PATH;
|
|
#if FF_STR_VOLUME_ID == 2 /* Also current drive is changed if in Unix style volume ID */
|
|
if (res == FR_OK) {
|
|
for (i = FF_VOLUMES - 1; i && fs != FatFs[i]; i--) ; /* Set current drive */
|
|
CurrVol = (BYTE)i;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
#if FF_FS_RPATH >= 2
|
|
FRESULT f_getcwd (
|
|
TCHAR* buff, /* Pointer to the directory path */
|
|
UINT len /* Size of buff in unit of TCHAR */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
DIR dj;
|
|
FATFS *fs;
|
|
UINT i, n;
|
|
DWORD ccl;
|
|
TCHAR *tp = buff;
|
|
#if FF_VOLUMES >= 2
|
|
UINT vl;
|
|
#if FF_STR_VOLUME_ID
|
|
const char *vp;
|
|
#endif
|
|
#endif
|
|
FILINFO fno;
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
buff[0] = 0; /* Set null string to get current volume */
|
|
res = mount_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */
|
|
if (res == FR_OK) {
|
|
dj.obj.fs = fs;
|
|
INIT_NAMBUF(fs);
|
|
|
|
/* Follow parent directories and create the path */
|
|
i = len; /* Bottom of buffer (directory stack base) */
|
|
|
|
dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */
|
|
while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */
|
|
res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */
|
|
if (res != FR_OK) break;
|
|
res = move_window(fs, dj.sect);
|
|
if (res != FR_OK) break;
|
|
dj.obj.sclust = ld_clust(fs, dj.dir); /* Goto parent directory */
|
|
res = dir_sdi(&dj, 0);
|
|
if (res != FR_OK) break;
|
|
do { /* Find the entry links to the child directory */
|
|
res = DIR_READ_FILE(&dj);
|
|
if (res != FR_OK) break;
|
|
if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */
|
|
res = dir_next(&dj, 0);
|
|
} while (res == FR_OK);
|
|
if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
|
|
if (res != FR_OK) break;
|
|
get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */
|
|
for (n = 0; fno.fname[n]; n++) ; /* Name length */
|
|
if (i < n + 1) { /* Insufficient space to store the path name? */
|
|
res = FR_NOT_ENOUGH_CORE; break;
|
|
}
|
|
while (n) buff[--i] = fno.fname[--n];
|
|
buff[--i] = '/';
|
|
}
|
|
if (res == FR_OK) {
|
|
if (i == len) buff[--i] = '/'; /* Is it the root-directory? */
|
|
#if FF_VOLUMES >= 2 /* Put drive prefix */
|
|
vl = 0;
|
|
#if FF_STR_VOLUME_ID >= 1 /* String volume ID */
|
|
for (n = 0, vp = (const char*)VolumeStr[CurrVol]; vp[n]; n++) ;
|
|
if (i >= n + 2) {
|
|
if (FF_STR_VOLUME_ID == 2) *tp++ = (TCHAR)'/';
|
|
for (vl = 0; vl < n; *tp++ = (TCHAR)vp[vl], vl++) ;
|
|
if (FF_STR_VOLUME_ID == 1) *tp++ = (TCHAR)':';
|
|
vl++;
|
|
}
|
|
#else /* Numeric volume ID */
|
|
if (i >= 3) {
|
|
*tp++ = (TCHAR)'0' + CurrVol;
|
|
*tp++ = (TCHAR)':';
|
|
vl = 2;
|
|
}
|
|
#endif
|
|
if (vl == 0) res = FR_NOT_ENOUGH_CORE;
|
|
#endif
|
|
/* Add current directory path */
|
|
if (res == FR_OK) {
|
|
do { /* Copy stacked path string */
|
|
*tp++ = buff[i++];
|
|
} while (i < len);
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
}
|
|
|
|
*tp = 0;
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#endif /* FF_FS_RPATH >= 2 */
|
|
#endif /* FF_FS_RPATH >= 1 */
|
|
|
|
|
|
|
|
#if FF_FS_MINIMIZE <= 2
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Seek File Read/Write Pointer */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_lseek (
|
|
FIL* fp, /* Pointer to the file object */
|
|
FSIZE_t ofs /* File pointer from top of file */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD clst, bcs;
|
|
LBA_t nsect;
|
|
FSIZE_t ifptr;
|
|
#if FF_USE_FASTSEEK
|
|
DWORD cl, pcl, ncl, tcl, tlen, ulen;
|
|
DWORD *tbl;
|
|
LBA_t dsc;
|
|
#endif
|
|
|
|
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);
|
|
|
|
#if FF_USE_FASTSEEK
|
|
if (fp->cltbl) { /* Fast seek */
|
|
if (ofs == CREATE_LINKMAP) { /* Create CLMT */
|
|
tbl = fp->cltbl;
|
|
tlen = *tbl++; ulen = 2; /* Given table size and required table size */
|
|
cl = fp->obj.sclust; /* Origin of the chain */
|
|
if (cl != 0) {
|
|
do {
|
|
/* Get a fragment */
|
|
tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
|
|
do {
|
|
pcl = cl; ncl++;
|
|
cl = get_fat(&fp->obj, cl);
|
|
if (cl <= 1) ABORT(fs, FR_INT_ERR);
|
|
if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
} while (cl == pcl + 1);
|
|
if (ulen <= tlen) { /* Store the length and top of the fragment */
|
|
*tbl++ = ncl; *tbl++ = tcl;
|
|
}
|
|
} while (cl < fs->n_fatent); /* Repeat until end of chain */
|
|
}
|
|
*fp->cltbl = ulen; /* Number of items used */
|
|
if (ulen <= tlen) {
|
|
*tbl = 0; /* Terminate table */
|
|
} else {
|
|
res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
|
|
}
|
|
} else { /* Fast seek */
|
|
if (ofs > fp->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */
|
|
fp->fptr = ofs; /* Set file pointer */
|
|
if (ofs > 0) {
|
|
fp->clust = clmt_clust(fp, ofs - 1);
|
|
dsc = clst2sect(fs, fp->clust);
|
|
if (dsc == 0) ABORT(fs, FR_INT_ERR);
|
|
dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);
|
|
if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */
|
|
#if !FF_FS_TINY
|
|
#if !FF_FS_READONLY
|
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
if (disk_read(fs->pdrv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */
|
|
#endif
|
|
fp->sect = dsc;
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
#endif
|
|
|
|
/* Normal Seek */
|
|
{
|
|
if (ofs > fp->obj.objsize && (FF_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */
|
|
ofs = fp->obj.objsize;
|
|
}
|
|
ifptr = fp->fptr;
|
|
fp->fptr = nsect = 0;
|
|
if (ofs > 0) {
|
|
bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */
|
|
if (ifptr > 0 &&
|
|
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
|
|
fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */
|
|
ofs -= fp->fptr;
|
|
clst = fp->clust;
|
|
} else { /* When seek to back cluster, */
|
|
clst = fp->obj.sclust; /* start from the first cluster */
|
|
#if !FF_FS_READONLY
|
|
if (clst == 0) { /* If no cluster chain, create a new chain */
|
|
clst = create_chain(&fp->obj, 0);
|
|
if (clst == 0) res = FR_NO_SPACE_LEFT;
|
|
if (clst == 1) ABORT(fs, FR_INT_ERR);
|
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
fp->obj.sclust = clst;
|
|
}
|
|
#endif
|
|
fp->clust = clst;
|
|
}
|
|
if (clst != 0) {
|
|
while (ofs > bcs) { /* Cluster following loop */
|
|
ofs -= bcs; fp->fptr += bcs;
|
|
#if !FF_FS_READONLY
|
|
if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
|
|
clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */
|
|
if (clst == 0) { /* Clip file size in case of disk full */
|
|
ofs = 0;
|
|
res = FR_NO_SPACE_LEFT;
|
|
break;
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */
|
|
}
|
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);
|
|
fp->clust = clst;
|
|
}
|
|
fp->fptr += ofs;
|
|
if (ofs % SS(fs)) {
|
|
nsect = clst2sect(fs, clst); /* Current sector */
|
|
if (nsect == 0) ABORT(fs, FR_INT_ERR);
|
|
nsect += (DWORD)(ofs / SS(fs));
|
|
}
|
|
}
|
|
}
|
|
if (!FF_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */
|
|
fp->obj.objsize = fp->fptr;
|
|
fp->flag |= FA_MODIFIED;
|
|
}
|
|
if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */
|
|
#if !FF_FS_TINY
|
|
#if !FF_FS_READONLY
|
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
if (disk_read(fs->pdrv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
|
|
#endif
|
|
fp->sect = nsect;
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
#if FF_FS_MINIMIZE <= 1
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Create a Directory Object */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_opendir (
|
|
DIR* dp, /* Pointer to directory object to create */
|
|
const TCHAR* path /* Pointer to the directory path */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DEF_NAMBUF
|
|
|
|
|
|
if (!dp) return FR_INVALID_OBJECT;
|
|
|
|
/* Get logical drive */
|
|
res = 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_DIR;
|
|
}
|
|
}
|
|
if (res == FR_OK) {
|
|
dp->obj.id = fs->id;
|
|
res = dir_sdi(dp, 0); /* Rewind directory */
|
|
#if FF_FS_LOCK
|
|
if (res == FR_OK) {
|
|
if (dp->obj.sclust != 0) {
|
|
dp->obj.lockid = inc_share(dp, 0); /* Lock the sub directory */
|
|
if (!dp->obj.lockid) res = FR_TOO_MANY_OPEN_FILES;
|
|
} else {
|
|
dp->obj.lockid = 0; /* Root directory need not to be locked */
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
if (res == FR_NO_FILE) res = FR_NO_PATH;
|
|
}
|
|
if (res != FR_OK) dp->obj.fs = 0; /* Invalidate the directory object if function failed */
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Close Directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_closedir (
|
|
DIR *dp /* Pointer to the directory object to be closed */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
|
|
|
|
res = validate(&dp->obj, &fs); /* Check validity of the file object */
|
|
if (res == FR_OK) {
|
|
#if FF_FS_LOCK
|
|
if (dp->obj.lockid) res = dec_share(dp->obj.lockid); /* Decrement sub-directory open counter */
|
|
if (res == FR_OK) dp->obj.fs = 0; /* Invalidate directory object */
|
|
#else
|
|
dp->obj.fs = 0; /* Invalidate directory object */
|
|
#endif
|
|
#if FF_FS_REENTRANT
|
|
unlock_fs(fs, FR_OK); /* Unlock volume */
|
|
#endif
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Read Directory Entries in Sequence */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_readdir (
|
|
DIR* dp, /* Pointer to the open directory object */
|
|
FILINFO* fno /* Pointer to file information to return */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DEF_NAMBUF
|
|
|
|
|
|
res = validate(&dp->obj, &fs); /* Check validity of the directory object */
|
|
if (res == FR_OK) {
|
|
if (!fno) {
|
|
res = dir_sdi(dp, 0); /* Rewind the directory object */
|
|
} else {
|
|
INIT_NAMBUF(fs);
|
|
res = DIR_READ_FILE(dp); /* Read an item */
|
|
if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */
|
|
if (res == FR_OK) { /* A valid entry is found */
|
|
get_fileinfo(dp, fno); /* Get the object information */
|
|
res = dir_next(dp, 0); /* Increment index for next */
|
|
if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */
|
|
}
|
|
FREE_NAMBUF();
|
|
}
|
|
}
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
#if FF_USE_FIND
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Find Next File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_findnext (
|
|
DIR* dp, /* Pointer to the open directory object */
|
|
FILINFO* fno /* Pointer to the file information structure */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
|
|
|
|
for (;;) {
|
|
res = f_readdir(dp, fno); /* Get a directory item */
|
|
if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */
|
|
if (pattern_match(dp->pat, fno->fname, 0, FIND_RECURS)) break; /* Test for the file name */
|
|
#if FF_USE_LFN && FF_USE_FIND == 2
|
|
if (pattern_match(dp->pat, fno->altname, 0, FIND_RECURS)) break; /* Test for alternative name if exist */
|
|
#endif
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Find First File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_findfirst (
|
|
DIR* dp, /* Pointer to the blank directory object */
|
|
FILINFO* fno, /* Pointer to the file information structure */
|
|
const TCHAR* path, /* Pointer to the directory to open */
|
|
const TCHAR* pattern /* Pointer to the matching pattern */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
|
|
|
|
dp->pat = pattern; /* Save pointer to pattern string */
|
|
res = f_opendir(dp, path); /* Open the target directory */
|
|
if (res == FR_OK) {
|
|
res = f_findnext(dp, fno); /* Find the first item */
|
|
}
|
|
return res;
|
|
}
|
|
|
|
#endif /* FF_USE_FIND */
|
|
|
|
|
|
|
|
#if FF_FS_MINIMIZE == 0
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get File Status */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_stat (
|
|
const TCHAR* path, /* Pointer to the file path */
|
|
FILINFO* fno /* Pointer to file information to return */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
DIR dj;
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
res = 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);
|
|
}
|
|
|
|
|
|
FRESULT fat_count_free_entries(
|
|
DWORD *nclst, /* Pointer to a variable to return number of free clusters */
|
|
FATFS *fs /* Pointer to corresponding filesystem object */
|
|
)
|
|
{
|
|
DWORD nfree, clst, stat;
|
|
LBA_t sect;
|
|
UINT i;
|
|
FFOBJID obj;
|
|
FRESULT res = FR_OK;
|
|
|
|
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 */
|
|
return res;
|
|
}
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get Number of Free Clusters */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_getfree (
|
|
const TCHAR* path, /* Logical drive number */
|
|
DWORD* nclst, /* Pointer to a variable to return number of free clusters */
|
|
FATFS** fatfs /* Pointer to return pointer to corresponding filesystem object */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
|
|
/* 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 */
|
|
res = fat_count_free_entries(nclst, fs);
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Truncate File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_getclustinfo(
|
|
FIL* fp,
|
|
DWORD* fclust,
|
|
DWORD* fcount
|
|
)
|
|
{
|
|
UINT count = 0;
|
|
FATFS *fs;
|
|
FRESULT ret;
|
|
ret = validate(&fp->obj,&fs);
|
|
if (ret != FR_OK) LEAVE_FF(fs,ret);
|
|
|
|
count = get_clustinfo(fp, fclust);
|
|
if (count == 0xFFFFFFFF)
|
|
LEAVE_FF(fs,FR_DENIED);
|
|
|
|
*fcount = count;
|
|
LEAVE_FF(fs,FR_OK);
|
|
}
|
|
|
|
FRESULT f_truncate (
|
|
FIL* fp, /* Pointer to the file object */
|
|
FSIZE_t length
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD n, tcl, val, count, fclust = 0, last_clust;
|
|
|
|
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_NO_EPERM); /* Check access mode */
|
|
|
|
if (fp->fptr <= fp->obj.objsize) { /* Process when fptr is not on the eof */
|
|
if (fp->fptr == 0 && length == 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 */
|
|
n = (DWORD)fs->csize * SS(fs); /* Cluster size */
|
|
tcl = (DWORD)(length / n) + ((length & (n - 1)) ? 1 : 0); /* Number of clusters required */
|
|
val = fp->obj.sclust;
|
|
last_clust = get_end_of_cluster(fs);
|
|
count = 0;
|
|
do {
|
|
fclust = val;
|
|
val = get_fat(&fp->obj, fclust);
|
|
count ++;
|
|
if (count == tcl)
|
|
break;
|
|
} while ((val != last_clust) && (val != 1) && (val != 0xFFFFFFFF));
|
|
|
|
res = FR_OK;
|
|
if (val == 0xFFFFFFFF) res = FR_DISK_ERR;
|
|
if (val == 1) res = FR_INT_ERR;
|
|
if (res == FR_OK && val < fs->n_fatent) {
|
|
res = remove_chain(&fp->obj, val, fclust);
|
|
}
|
|
}
|
|
|
|
if (res == FR_OK) {
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->last_clst = fclust;
|
|
#else
|
|
if (ISVIRPART(fs) && ISCHILD(fs))
|
|
fs->last_clst = fclust;
|
|
PARENTFS(fs)->last_clst = fclust;
|
|
#endif
|
|
fp->obj.objsize = length; /* Set file size to length */
|
|
if (fp->fptr > length) {
|
|
fp->fptr = length;
|
|
fp->clust = fclust;
|
|
}
|
|
}
|
|
fp->flag |= FA_MODIFIED;
|
|
#if !FF_FS_TINY
|
|
if (res == FR_OK && (fp->flag & FA_DIRTY)) {
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) {
|
|
res = FR_DISK_ERR;
|
|
} else {
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
}
|
|
#endif
|
|
if (res != FR_OK) ABORT(fs, res);
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Delete a File/Directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_unlink (
|
|
const TCHAR* path /* Pointer to the file or directory path */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DIR dj, sdj;
|
|
DWORD dclst = 0;
|
|
#if FF_FS_REENTRANT
|
|
FATFS *fs_bak;
|
|
#endif
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
DWORD rtclst = 0;
|
|
DWORD st_bak = 0;
|
|
#endif
|
|
#ifndef __LITEOS_M__
|
|
DWORD last_clust = 1;
|
|
#endif
|
|
DEF_NAMBUF
|
|
|
|
|
|
/* Get logical drive */
|
|
res = mount_volume(&path, &fs, FA_WRITE);
|
|
dj.obj.fs = fs;
|
|
#if FF_FS_REENTRANT
|
|
fs_bak = fs;
|
|
#endif
|
|
if (res == FR_OK) {
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
#if FF_FS_REENTRANT
|
|
if (ISCHILD(fs)) LEAVE_FF(fs_bak,FR_INVAILD_FATFS);
|
|
#else
|
|
if (ISCHILD(fs)) LEAVE_FF(fs,FR_INVAILD_FATFS);
|
|
#endif
|
|
if (ISVIRPART(fs)) {
|
|
/* Check the virtual partition top directory, and match the virtual fs */
|
|
res = follow_virentry(&dj.obj,path);
|
|
#if FF_FS_REENTRANT
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs_bak,res);
|
|
#else
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs,res);
|
|
#endif
|
|
if (res == FR_OK)
|
|
fs = dj.obj.fs;
|
|
}
|
|
#endif
|
|
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 */
|
|
}
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (res == FR_OK && ISVIRPART(fs)) {
|
|
dj.atrootdir = 0;rtclst = 2;
|
|
st_bak = PARENTFS(dj.obj.fs)->winsect;
|
|
last_clust = get_end_of_cluster(fs);
|
|
/* Follow the root directory cluster chain */
|
|
for (;;) {
|
|
#if FF_FS_REENTRANT
|
|
if (rtclst == 0xFFFFFFFF) LEAVE_FF(fs_bak,FR_DISK_ERR);
|
|
#else
|
|
if (rtclst == 0xFFFFFFFF) LEAVE_FF(fs,FR_DISK_ERR);
|
|
#endif
|
|
if (rtclst == last_clust) break;
|
|
#if FF_FS_REENTRANT
|
|
if (rtclst < 2 || rtclst >= fs->n_fatent) LEAVE_FF(fs_bak,FR_INT_ERR);
|
|
if (rtclst == 0 || rtclst == 1) LEAVE_FF(fs_bak,FR_INT_ERR);
|
|
#else
|
|
if (rtclst < 2 || rtclst >= fs->n_fatent) LEAVE_FF(fs,FR_INT_ERR);
|
|
if (rtclst == 0 || rtclst == 1) LEAVE_FF(fs,FR_INT_ERR);
|
|
#endif
|
|
/* If current dirent is on rootdir clust chain */
|
|
if (dj.clust == rtclst) {
|
|
/* Set a flag */
|
|
dj.atrootdir = 1;
|
|
break;
|
|
}
|
|
rtclst = get_fat(&(dj.obj),rtclst);
|
|
}
|
|
/* If current item is on rootdir clust chain */
|
|
if (dj.atrootdir == 1) {
|
|
if (ISCHILD(fs)) {
|
|
/* The FATFS is child object already, that means the operation is trying to delete the virtual partition directory */
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak,FR_DENIED);
|
|
#else
|
|
LEAVE_FF(fs,FR_DENIED);
|
|
#endif
|
|
}
|
|
}
|
|
res = move_window(dj.obj.fs,st_bak);
|
|
}
|
|
#endif
|
|
|
|
#if FF_FS_LOCK
|
|
if (res == FR_OK) res = chk_share(&dj, 2); /* Check if it is an open object */
|
|
#endif
|
|
if (res == FR_OK) { /* The object is accessible */
|
|
if (dj.fn[NSFLAG] & NS_NONAME) {
|
|
res = FR_INVALID_NAME; /* Cannot remove the origin directory */
|
|
} else {
|
|
if (dj.obj.attr & AM_RDO) {
|
|
res = FR_DENIED; /* Cannot remove R/O object */
|
|
}
|
|
}
|
|
if (res == FR_OK) {
|
|
dclst = ld_clust(fs, dj.dir);
|
|
if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */
|
|
#if FF_FS_RPATH != 0
|
|
if (dclst == fs->cdir) { /* Is it the current directory? */
|
|
res = FR_DENIED;
|
|
} else
|
|
#endif
|
|
{
|
|
sdj.obj.fs = fs; /* Open the sub-directory */
|
|
sdj.obj.sclust = dclst;
|
|
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_NO_EMPTY_DIR; /* 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();
|
|
}
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Create a Directory */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_mkdir (
|
|
const TCHAR* path /* Pointer to the directory path */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DIR dj;
|
|
FFOBJID sobj;
|
|
#if FF_FS_REENTRANT
|
|
FATFS *fs_bak;
|
|
#endif
|
|
BYTE *dir;
|
|
UINT n;
|
|
DWORD dcl, pcl, tm;
|
|
QWORD dsc;
|
|
DEF_NAMBUF
|
|
|
|
|
|
res = mount_volume(&path, &fs, FA_WRITE); /* Get logical drive */
|
|
dj.obj.fs = fs;
|
|
#if FF_FS_REENTRANT
|
|
fs_bak = fs;
|
|
#endif
|
|
dj.obj.sclust = 0;
|
|
if (res == FR_OK) {
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
#if FF_FS_REENTRANT
|
|
if (ISCHILD(fs)) LEAVE_FF(fs_bak,FR_INVAILD_FATFS);
|
|
#else
|
|
if (ISCHILD(fs)) LEAVE_FF(fs,FR_INVAILD_FATFS);
|
|
#endif
|
|
if (ISVIRPART(fs)) {
|
|
/* Check the virtual partition top directory, and match the virtual fs */
|
|
res = follow_virentry(&dj.obj,path);
|
|
#if FF_FS_REENTRANT
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs_bak,res);
|
|
#else
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs,res);
|
|
#endif
|
|
if (res == FR_OK)
|
|
fs = dj.obj.fs;
|
|
}
|
|
#endif
|
|
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_NO_SPACE_LEFT; /* 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? */
|
|
if (res == FR_OK) res = sync_window(fs); /* Flush FAT */
|
|
tm = GET_FATTIME();
|
|
if (res == FR_OK) { /* Initialize the new directory table */
|
|
dsc = clst2sect(fs, dcl);
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
dir = fs->win;
|
|
#else
|
|
dir = PARENTFS(fs)->win;
|
|
#endif
|
|
mem_set(dir, 0, SS(fs));
|
|
mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */
|
|
dir[DIR_Name] = '.';
|
|
dir[DIR_Attr] = AM_DIR;
|
|
if (SYSTEM_TIME_ENABLE == time_status) {
|
|
st_dword(dir + DIR_ModTime, tm);
|
|
} else if (SYSTEM_TIME_DISABLE == time_status) {
|
|
st_dword(dir + DIR_ModTime, 0);
|
|
}
|
|
st_clust(fs, dir, dcl);
|
|
mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */
|
|
dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
|
|
if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0;
|
|
st_clust(fs, dir + SZDIRE, pcl);
|
|
|
|
for (n = fs->csize; n; n--) { /* Write dot entries and clear following sectors */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->winsect = dsc++;
|
|
fs->wflag = 1;
|
|
res = sync_window(fs);
|
|
if (res != FR_OK) break;
|
|
mem_set(dir, 0, SS(fs));
|
|
#else
|
|
PARENTFS(fs)->winsect = dsc++;
|
|
PARENTFS(fs)->wflag = 1;
|
|
res = sync_window(fs);
|
|
if (res != FR_OK) break;
|
|
mem_set(dir, 0, SS(fs));
|
|
#endif
|
|
}
|
|
}
|
|
if (res == FR_OK) {
|
|
res = dir_register(&dj); /* Register the object to the directoy */
|
|
}
|
|
if (res == FR_OK) {
|
|
dir = dj.dir;
|
|
if (SYSTEM_TIME_ENABLE == time_status) {
|
|
st_dword(dir + DIR_ModTime, tm); /* Created time */
|
|
}
|
|
else if (SYSTEM_TIME_DISABLE == time_status)
|
|
{
|
|
st_dword(dir + DIR_ModTime, 0); /* Created time */
|
|
}
|
|
st_clust(fs, dir, dcl); /* Table start cluster */
|
|
dir[DIR_Attr] = AM_DIR; /* Attribute */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
if (res == FR_OK) {
|
|
res = sync_fs(fs);
|
|
}
|
|
} else {
|
|
remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
}
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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;
|
|
FATFS *fs;
|
|
DIR djo, djn;
|
|
#if FF_FS_REENTRANT
|
|
FATFS *fs_bak;
|
|
#endif
|
|
BYTE buf[SZDIRE], *dir;
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
DWORD rtclst = 0;
|
|
DWORD st_bak = 0;
|
|
DWORD last_clust = 0;
|
|
#endif
|
|
LBA_t sect;
|
|
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 FF_FS_REENTRANT
|
|
fs_bak = fs;
|
|
#endif
|
|
if (res == FR_OK) {
|
|
djo.obj.fs = fs;
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISCHILD(fs)) LEAVE_FF(fs,FR_INVAILD_FATFS);
|
|
if (ISVIRPART(fs)) {
|
|
/* Check the virtual partition top directory, and match the virtual fs */
|
|
res = follow_virentry(&djo.obj,path_old);
|
|
#if FF_FS_REENTRANT
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs_bak,res);
|
|
#else
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs,res);
|
|
#endif
|
|
if (res == FR_OK)
|
|
fs = djo.obj.fs;
|
|
}
|
|
#endif
|
|
INIT_NAMBUF(fs);
|
|
res = follow_path(&djo, path_old); /* Check old object */
|
|
if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */
|
|
#if FF_FS_LOCK
|
|
if (res == FR_OK) {
|
|
res = chk_share(&djo, 2);
|
|
}
|
|
#endif
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (res == FR_OK && ISVIRPART(fs)) {
|
|
djo.atrootdir = 0;rtclst = 2;
|
|
st_bak = PARENTFS(djo.obj.fs)->winsect;
|
|
last_clust = get_end_of_cluster(fs);
|
|
/* Follow the root directory cluster chain */
|
|
for (;;) {
|
|
#if FF_FS_REENTRANT
|
|
if (rtclst == 0xFFFFFFFF) LEAVE_FF(fs_bak,FR_DISK_ERR);
|
|
if (rtclst == last_clust) break;
|
|
if (rtclst < 2 || rtclst >= fs->n_fatent) LEAVE_FF(fs_bak,FR_INT_ERR);
|
|
if (rtclst == 0 || rtclst == 1) LEAVE_FF(fs_bak,FR_INT_ERR);
|
|
#else
|
|
if (rtclst == 0xFFFFFFFF) LEAVE_FF(fs,FR_DISK_ERR);
|
|
if (rtclst == last_clust) break;
|
|
if (rtclst < 2 || rtclst >= fs->n_fatent) LEAVE_FF(fs,FR_INT_ERR);
|
|
if (rtclst == 0 || rtclst == 1) LEAVE_FF(fs,FR_INT_ERR);
|
|
#endif
|
|
/* If current dirent is on rootdir clust chain */
|
|
if (djo.clust == rtclst) {
|
|
/* Set a flag */
|
|
djo.atrootdir = 1;
|
|
}
|
|
rtclst = get_fat(&(djo.obj),rtclst);
|
|
}
|
|
/* If current item is on rootdir clust chain */
|
|
if (djo.atrootdir == 1) {
|
|
if (ISCHILD(fs)) {
|
|
/* The FATFS is child object already, that means the operation is trying to delete the virtual partition directory */
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak,FR_DENIED);
|
|
#else
|
|
LEAVE_FF(fs,FR_DENIED);
|
|
#endif
|
|
}
|
|
}
|
|
res = move_window(djo.obj.fs,st_bak);
|
|
}
|
|
#endif
|
|
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 = 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 information about 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 */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
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 */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
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;
|
|
#else
|
|
res = move_window(fs, sect);
|
|
dir = PARENTFS(fs)->win + SZDIRE * 1; /* Ptr to .. entry */
|
|
if (res == FR_OK && dir[1] == '.') {
|
|
st_clust(fs, dir, djn.obj.sclust);
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
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();
|
|
}
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
#endif /* FF_FS_MINIMIZE == 0 */
|
|
#endif /* FF_FS_MINIMIZE <= 1 */
|
|
#endif /* FF_FS_MINIMIZE <= 2 */
|
|
|
|
|
|
|
|
#if FF_USE_CHMOD && !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Change Attribute */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_chmod (
|
|
const TCHAR* path, /* Pointer to the file path */
|
|
BYTE attr, /* Attribute bits */
|
|
BYTE mask /* Attribute mask to change */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DIR dj;
|
|
#if FF_FS_REENTRANT
|
|
FATFS *fs_bak;
|
|
#endif
|
|
DEF_NAMBUF
|
|
|
|
|
|
res = mount_volume(&path, &fs, FA_WRITE); /* Get logical drive */
|
|
if (res == FR_OK) {
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
#if FF_FS_REENTRANT
|
|
if (ISCHILD(fs)) LEAVE_FF(fs_bak,FR_INVAILD_FATFS);
|
|
#else
|
|
if (ISCHILD(fs)) LEAVE_FF(fs,FR_INVAILD_FATFS);
|
|
#endif
|
|
if (ISVIRPART(fs)) {
|
|
/* Check the virtual partition top directory, and match the virtual fs */
|
|
res = follow_virentry(&dj.obj,path);
|
|
#if FF_FS_REENTRANT
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs_bak,res);
|
|
#else
|
|
if (res == FR_INT_ERR) LEAVE_FF(fs,res);
|
|
#endif
|
|
if (res == FR_OK)
|
|
fs = dj.obj.fs;
|
|
}
|
|
#endif
|
|
INIT_NAMBUF(fs);
|
|
res = follow_path(&dj, path); /* Follow the file path */
|
|
if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
|
|
if (res == FR_OK) {
|
|
mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
|
|
dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->wflag = 1;
|
|
#else
|
|
PARENTFS(fs)->wflag = 1;
|
|
#endif
|
|
if (res == FR_OK) {
|
|
res = sync_fs(fs);
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
}
|
|
#if FF_FS_REENTRANT
|
|
LEAVE_FF(fs_bak, res);
|
|
#else
|
|
LEAVE_FF(fs, res);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Change Timestamp */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_utime (
|
|
const TCHAR* path, /* Pointer to the file/directory name */
|
|
const FILINFO* fno /* Pointer to the timestamp to be set */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DIR dj;
|
|
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 && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */
|
|
if (res == FR_OK) {
|
|
st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
|
|
fs->wflag = 1;
|
|
if (res == FR_OK) {
|
|
res = sync_fs(fs);
|
|
}
|
|
}
|
|
FREE_NAMBUF();
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#endif /* FF_USE_CHMOD && !FF_FS_READONLY */
|
|
|
|
|
|
|
|
#if FF_USE_LABEL
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get Volume Label */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_getlabel (
|
|
const TCHAR* path, /* Logical drive number */
|
|
TCHAR* label, /* Buffer to store the volume label */
|
|
DWORD* vsn /* Variable to store the volume serial number */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DIR dj;
|
|
UINT si, di;
|
|
WCHAR wc;
|
|
|
|
/* 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 FF_USE_LFN && FF_LFN_UNICODE >= 1 /* Unicode output */
|
|
if (dbc_1st((BYTE)wc) && si < 11) wc = wc << 8 | dj.dir[si++]; /* Is it a DBC? */
|
|
wc = ff_oem2uni(wc, CODEPAGE); /* Convert it into Unicode */
|
|
if (wc == 0) { /* Invalid char in current code page? */
|
|
di = 0; break;
|
|
}
|
|
di += put_utf(wc, &label[di], 4); /* Store it in Unicode */
|
|
#else /* ANSI/OEM output */
|
|
label[di++] = (TCHAR)wc;
|
|
#endif
|
|
}
|
|
do { /* Truncate trailing spaces */
|
|
label[di] = 0;
|
|
if (di == 0) break;
|
|
} while (label[--di] == ' ');
|
|
}
|
|
}
|
|
if (res == FR_NO_FILE) { /* No label entry and return nul string */
|
|
label[0] = 0;
|
|
res = FR_OK;
|
|
}
|
|
}
|
|
|
|
/* Get volume serial number */
|
|
if (res == FR_OK && vsn) {
|
|
res = move_window(fs, fs->volbase);
|
|
if (res == FR_OK) {
|
|
switch (fs->fs_type) {
|
|
case FS_FAT32:
|
|
di = BS_VolID32;
|
|
break;
|
|
|
|
default:
|
|
di = BS_VolID;
|
|
}
|
|
*vsn = ld_dword(fs->win + di);
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Set Volume Label */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT set_volumn_label(FATFS *fs, const TCHAR *label)
|
|
{
|
|
FRESULT res;
|
|
DIR dj;
|
|
BYTE dirvn[22];
|
|
UINT di;
|
|
WCHAR wc;
|
|
static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F";
|
|
#if FF_USE_LFN
|
|
DWORD dc;
|
|
#endif
|
|
/* On the FAT/FAT32 volume */
|
|
memset(dirvn, ' ', 11);
|
|
di = 0;
|
|
while ((UINT)*label >= ' ') { /* Create volume label */
|
|
#if FF_USE_LFN
|
|
dc = tchar2uni(&label);
|
|
wc = (dc < 0x10000) ? ff_uni2oem(ff_wtoupper(dc), CODEPAGE) : 0;
|
|
#else /* ANSI/OEM input */
|
|
wc = (BYTE)*label++;
|
|
if (dbc_1st((BYTE)wc)) wc = dbc_2nd((BYTE)*label) ? wc << 8 | (BYTE)*label++ : 0;
|
|
if (IsLower(wc)) wc -= 0x20; /* To upper ASCII characters */
|
|
#if FF_CODE_PAGE == 0
|
|
if (ExCvt && wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */
|
|
#elif FF_CODE_PAGE < 900
|
|
if (wc >= 0x80) wc = ExCvt[wc - 0x80]; /* To upper extended characters (SBCS cfg) */
|
|
#endif
|
|
#endif
|
|
if (wc == 0 || strchr(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 (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 */
|
|
dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */
|
|
mem_cpy(dj.dir, dirvn, 11);
|
|
fs->wflag = 1;
|
|
res = sync_fs(fs);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
FRESULT f_setlabel (
|
|
const TCHAR* label /* Volume label to set with heading logical drive number */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
|
|
/* Get logical drive */
|
|
res = mount_volume(&label, &fs, FA_WRITE);
|
|
if (res != FR_OK) LEAVE_FF(fs, res);
|
|
|
|
res = set_volumn_label(fs, label);
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
#endif /* FF_USE_LABEL */
|
|
|
|
|
|
|
|
#if FF_USE_EXPAND && !FF_FS_READONLY
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Allocate a Contiguous Blocks to the File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_expand (
|
|
FIL* fp, /* Pointer to the file object */
|
|
FSIZE_t offset, /* File offset to be expanded to */
|
|
FSIZE_t fsz, /* File size to be expanded to */
|
|
int opt /* Operation mode 0:Find and prepare or 1:Find and allocate */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD n, clst, stcl, scl, ncl, tcl, lclst, count, fclust = 0;
|
|
DWORD clstbak = 0;
|
|
FSIZE_t exsz;
|
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
|
|
|
|
if (fsz == 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);
|
|
|
|
n = (DWORD)fs->csize * SS(fs); /* Cluster size */
|
|
count = 0;
|
|
if (fp->obj.sclust != 0) {
|
|
count = get_clustinfo(fp, &fclust);
|
|
}
|
|
if (offset + fsz <= n * count) LEAVE_FF(fs, FR_OK);
|
|
|
|
exsz = offset + fsz - n * count;
|
|
tcl = (DWORD)(exsz / n) + ((exsz & (n - 1)) ? 1 : 0); /* Number of clusters required */
|
|
stcl = fs->last_clst; lclst = 0;
|
|
|
|
#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
if (ISVIRPART(fs)) {
|
|
if (stcl < fs->st_clst || stcl >= fs->st_clst + fs->ct_clst) stcl = fs->st_clst;
|
|
scl = stcl; ncl = 0; clst = stcl + 1;
|
|
for (;;) { /* Find a contiguous cluster block */
|
|
n = get_fat(&fp->obj, clst);
|
|
if (n == 1) { res = FR_INT_ERR; break; }
|
|
if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
|
|
if (n == 0) { /* Is it a free cluster? */
|
|
if (clstbak != 0) { /* Link each free cluster */
|
|
res = put_fat(fs, clstbak, clst);
|
|
if (res != FR_OK)
|
|
break;
|
|
} else { /* Clstbak has not been update, current cluster is the head cluster of the chain */
|
|
scl = clst;
|
|
}
|
|
clstbak = clst; /* Update the current cluster to the last cluster in next loop */
|
|
if (++ncl == tcl) { /* Link the mark of the end of chain */
|
|
res = put_fat(fs, clst, 0xFFFFFFFF);
|
|
break;
|
|
}
|
|
}
|
|
if (clst == stcl) { /* No contiguous cluster? */
|
|
res = FR_DENIED;
|
|
break;
|
|
}
|
|
/* Move the current cluster to the next one */
|
|
if (++clst >= fs->st_clst + fs->ct_clst) clst = fs->st_clst;
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;
|
|
scl = stcl; ncl = 0; clst = stcl + 1;
|
|
for (;;) { /* Find a contiguous cluster block */
|
|
n = get_fat(&fp->obj, clst);
|
|
if (n == 1) { res = FR_INT_ERR; break; }
|
|
if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
|
|
if (n == 0) { /* Is it a free cluster? */
|
|
if (clstbak != 0) { /* Link each free cluster */
|
|
res = put_fat(fs, clstbak, clst);
|
|
if (res != FR_OK) break;
|
|
} else { /* Clstbak has not been update, current cluster is the head cluster of the chain */
|
|
scl = clst;
|
|
}
|
|
clstbak = clst; /* Update the current cluster to the last cluster in next loop */
|
|
if (++ncl == tcl) { /* Link the mark of the end of chain */
|
|
res = put_fat(fs, clst, 0xFFFFFFFF);
|
|
break;
|
|
}
|
|
}
|
|
if (clst == stcl) { /* No contiguous cluster? */
|
|
res = FR_DENIED;
|
|
break;
|
|
}
|
|
/* Move the current cluster to the next one */
|
|
if (++clst >= fs->n_fatent) clst = 2;
|
|
}
|
|
}
|
|
|
|
if (res == FR_OK) {
|
|
#ifndef LOSCFG_FS_FAT_VIRTUAL_PARTITION
|
|
fs->last_clst = lclst; /* Set suggested start cluster to start next */
|
|
if (opt) {
|
|
if (fp->obj.sclust == 0) {
|
|
fp->obj.sclust = scl; /* Update object allocation information */
|
|
} else {
|
|
res = put_fat(fs, fclust, scl);
|
|
if (res != FR_OK) LEAVE_FF(fs, res);
|
|
}
|
|
fp->flag |= FA_MODIFIED;
|
|
if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */
|
|
fs->free_clst -= tcl;
|
|
fs->fsi_flag |= 1;
|
|
}
|
|
}
|
|
#else
|
|
if (ISVIRPART(fs) && ISCHILD(fs))
|
|
fs->last_clst = lclst; /* Set suggested start cluster to start next */
|
|
PARENTFS(fs)->last_clst = lclst;
|
|
if (opt) {
|
|
if (fp->obj.sclust == 0) {
|
|
fp->obj.sclust = scl; /* Update object allocation information */
|
|
} else {
|
|
res = put_fat(fs, fclust, scl);
|
|
if (res != FR_OK) LEAVE_FF(fs, res);
|
|
}
|
|
fp->flag |= FA_MODIFIED;
|
|
if (ISVIRPART(fs)) {
|
|
if (fs->free_clst <= fs->ct_clst && ISCHILD(fs))
|
|
fs->free_clst -= tcl;
|
|
if (PARENTFS(fs)->free_clst <= PARENTFS(fs)->n_fatent - 2) {
|
|
PARENTFS(fs)->free_clst -= tcl;
|
|
PARENTFS(fs)->fsi_flag |= 1;
|
|
}
|
|
} else {
|
|
if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */
|
|
fs->free_clst -= tcl;
|
|
fs->fsi_flag |= 1;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
} else { /* Reached error, remove the chain which built before */
|
|
clst = scl;
|
|
lclst = get_end_of_cluster(fs); /* Get the end of cluster chain */
|
|
for (;;) {
|
|
n = get_fat(&fp->obj, clst);
|
|
if (n == 1 || n == 0) { res = FR_INT_ERR; break; }
|
|
if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
|
|
res = put_fat(fs, clst, 0);
|
|
if (res != FR_OK) break;
|
|
if (n == lclst) break; /* If the current cluster is the last cluster ,the finish this operation */
|
|
clst = n;
|
|
}
|
|
res = put_fat(fs, fclust, 0xFFFFFFFF);
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
#endif /* FF_USE_EXPAND && !FF_FS_READONLY */
|
|
|
|
|
|
|
|
#if FF_USE_FORWARD
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Forward Data to the Stream Directly */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_forward (
|
|
FIL* fp, /* Pointer to the file object */
|
|
UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
|
|
UINT btf, /* Number of bytes to forward */
|
|
UINT* bf /* Pointer to number of bytes forwarded */
|
|
)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD clst;
|
|
LBA_t sect;
|
|
FSIZE_t remain;
|
|
UINT rcnt, csect;
|
|
BYTE *dbuf;
|
|
|
|
|
|
*bf = 0; /* Clear transfer byte counter */
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */
|
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
|
|
if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_NO_EPERM); /* Check access mode */
|
|
|
|
remain = fp->obj.objsize - fp->fptr;
|
|
if (btf > remain) btf = (UINT)remain; /* Truncate btf by remaining bytes */
|
|
|
|
for ( ; btf > 0 && (*func)(0, 0); fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) { /* Repeat until all data transferred or stream goes busy */
|
|
csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */
|
|
if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */
|
|
if (csect == 0) { /* On the cluster boundary? */
|
|
clst = (fp->fptr == 0) ? /* On the top of the file? */
|
|
fp->obj.sclust : get_fat(&fp->obj, fp->clust);
|
|
if (clst <= 1) ABORT(fs, FR_INT_ERR);
|
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
|
|
fp->clust = clst; /* Update current cluster */
|
|
}
|
|
}
|
|
sect = clst2sect(fs, fp->clust); /* Get current data sector */
|
|
if (sect == 0) ABORT(fs, FR_INT_ERR);
|
|
sect += csect;
|
|
#if FF_FS_TINY
|
|
if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */
|
|
dbuf = fs->win;
|
|
#else
|
|
if (fp->sect != sect) { /* Fill sector cache with file data */
|
|
#if !FF_FS_READONLY
|
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */
|
|
if (disk_write(fs->pdrv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
fp->flag &= (BYTE)~FA_DIRTY;
|
|
}
|
|
#endif
|
|
if (disk_read(fs->pdrv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
|
|
}
|
|
dbuf = fp->buf;
|
|
#endif
|
|
fp->sect = sect;
|
|
rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes remains in the sector */
|
|
if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */
|
|
rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */
|
|
if (rcnt == 0) ABORT(fs, FR_INT_ERR);
|
|
}
|
|
|
|
LEAVE_FF(fs, FR_OK);
|
|
}
|
|
#endif /* FF_USE_FORWARD */
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY && FF_USE_MKFS
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Create an FAT volume */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#define N_SEC_TRACK 63 /* Sectors per track for determination of drive CHS */
|
|
|
|
|
|
/* Create partitions on the physical drive in format of MBR */
|
|
|
|
static FRESULT create_partition (
|
|
BYTE drv, /* Physical drive number */
|
|
const LBA_t plst[], /* Partition list */
|
|
BYTE sys, /* System ID (for only MBR, temp setting) */
|
|
BYTE* buf /* Working buffer for a sector */
|
|
)
|
|
{
|
|
UINT i, cy;
|
|
LBA_t sz_drv;
|
|
DWORD sz_drv32, s_lba32, n_lba32;
|
|
BYTE *pte, hd, n_hd, sc, n_sc;
|
|
|
|
/* 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] = 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, fsty, sys, pdrv, ipart;
|
|
BYTE *buf;
|
|
BYTE *pte;
|
|
#ifndef __LITEOS_M__
|
|
size_t ss;
|
|
#else
|
|
WORD ss; /* Sector size */
|
|
#endif
|
|
DWORD sz_buf, sz_blk, n_clst, pau, nsect, n;
|
|
LBA_t sz_vol, b_vol, b_fat, b_data; /* Size of volume, Base LBA of volume, fat, data */
|
|
LBA_t sect, lba[2];
|
|
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;
|
|
DSTATUS ds;
|
|
FRESULT fr = FR_OK;
|
|
#if FF_MULTI_PARTITION
|
|
int extended_br;
|
|
int extended_pos = -1;
|
|
DWORD extended_base = 0;
|
|
DWORD extended_offset = 0;
|
|
BYTE* multi_buf = NULL;
|
|
int gpt_part = 0;
|
|
#endif
|
|
|
|
|
|
/* Check mounted drive and clear work area */
|
|
vol = get_ldnumber(&path); /* Get target logical drive */
|
|
if (vol < 0) return FR_INVALID_DRIVE;
|
|
if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear the fs object if mounted */
|
|
pdrv = LD2PD(vol); /* Hosting physical drive */
|
|
ipart = LD2PT(vol); /* Hosting partition (0:create as new, 1..:existing partition) */
|
|
|
|
/* Initialize the hosting physical drive */
|
|
ds = disk_initialize(pdrv);
|
|
if (ds & STA_NOINIT) return FR_NOT_READY;
|
|
if (ds & STA_PROTECT) return FR_WRITE_PROTECTED;
|
|
|
|
/* Get physical drive parameters (sz_drv, sz_blk and ss) */
|
|
if (!opt) opt = &defopt; /* Use default parameter if it is not given */
|
|
sz_blk = opt->align;
|
|
if (sz_blk == 0) disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk); /* Block size from the paramter or lower layer */
|
|
if (sz_blk == 0 || sz_blk > 0x8000 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Use default if the block size is invalid */
|
|
#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;
|
|
n = opt->n_sect * ss;
|
|
sz_au = (n <= 0x1000000 && (n & (n - 1)) == 0) ? n : 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 FF_MULTI_PARTITION
|
|
/* Determine where the volume to be located (b_vol, sz_vol) */
|
|
b_vol = sz_vol = 0;
|
|
if (ipart != 0) { /* Is the volume associated with any specific partition? */
|
|
/* Get partition information from partition table in the MBR and EBR to set boot sector properly */
|
|
if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */
|
|
if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */
|
|
if (buf[MBR_Table + 4] != 0xEE) {
|
|
pte = buf + (MBR_Table + (ipart - 1) * SZ_PTE);
|
|
extended_br = ipart - 4;
|
|
if (extended_br > 0) {
|
|
for (i = 0; i < 4; i++) {
|
|
pte = &buf[MBR_Table + i * SZ_PTE];
|
|
if (pte[4] == 0x0F) extended_pos = i;
|
|
}
|
|
pte = &buf[MBR_Table + extended_pos * SZ_PTE];
|
|
extended_base = ld_dword(pte + 8);
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_read(LD2DI(vol), buf, extended_base, 1) != RES_OK) return FR_DISK_ERR;
|
|
#else
|
|
if (disk_read(LD2PD(vol), buf, extended_base, 1) != RES_OK) return FR_DISK_ERR;
|
|
#endif
|
|
pte = &buf[MBR_Table];
|
|
for (; extended_br > 1; --extended_br) {
|
|
pte = &buf[MBR_Table];
|
|
extended_offset = ld_dword(pte + SZ_PTE + 8);
|
|
mem_set(buf, 0, len);
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_read(LD2DI(vol), buf, extended_base + extended_offset, 1) != RES_OK) return FR_DISK_ERR;
|
|
#else
|
|
if (disk_read(LD2PD(vol), buf, extended_base + extended_offset, 1) != RES_OK) return FR_DISK_ERR;
|
|
#endif
|
|
}
|
|
}
|
|
if (!pte[4]) return FR_MKFS_ABORTED; /* No partition? */
|
|
#ifdef __LITEOS_M__
|
|
b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */
|
|
sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */
|
|
#else
|
|
b_vol = LD2PS(vol); /* Volume start sector */
|
|
sz_vol = LD2PC(vol); /* Volume size */
|
|
#endif
|
|
} else {
|
|
gpt_part = 1;
|
|
b_vol = LD2PS(vol); /* Volume start sector */
|
|
sz_vol = LD2PC(vol); /* Volume size */
|
|
if (disk_read(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Load GPT partition info */
|
|
if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if GPT partition is valid */
|
|
}
|
|
|
|
multi_buf = ff_memalloc(ss);
|
|
if (multi_buf == NULL)
|
|
return FR_NOT_ENOUGH_CORE;
|
|
|
|
mem_cpy(multi_buf, buf, ss);
|
|
if (!gpt_part)
|
|
if (!pte[4]) {fr = FR_MKFS_ABORTED; goto EXIT;} /* No partition? */
|
|
} else
|
|
#endif
|
|
{
|
|
/* Create a single-partition in this function */
|
|
if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) {fr = FR_DISK_ERR; goto EXIT;}
|
|
b_vol = (fsopt & FM_SFD) ? 0 : 63; /* Volume start sector */ if (sz_vol < b_vol) {fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
sz_vol -= b_vol; /* Volume size */
|
|
}
|
|
if (sz_vol < 128) {fr = FR_MKFS_ABORTED; goto EXIT;} /* 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 (sz_au > 128) {fr = FR_INVALID_PARAMETER; goto EXIT;} /* 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)) {fr = FR_INVALID_PARAMETER; goto EXIT;} /* 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) {fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
} 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; /* Rootdir size [sector] */
|
|
}
|
|
b_fat = b_vol + sz_rsv; /* FAT base */
|
|
b_data = b_fat + sz_fat * n_fat + sz_dir; /* Data base */
|
|
|
|
/* Align data base 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 base */
|
|
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) { /* Too small volume? */
|
|
fr = FR_MKFS_ABORTED;
|
|
goto EXIT;
|
|
}
|
|
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 */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
}
|
|
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 */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
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 */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
}
|
|
if (fsty == FS_FAT12 && n_clst > MAX_FAT12) {fr = FR_MKFS_ABORTED; goto EXIT;} /* Too many clusters for FAT12 */
|
|
|
|
/* Ok, it is the valid cluster configuration */
|
|
break;
|
|
} while (1);
|
|
|
|
#if FF_USE_TRIM
|
|
lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1; /* Inform storage device that the volume area may be erased */
|
|
disk_ioctl(pdrv, CTRL_TRIM, lba);
|
|
#endif
|
|
/* Create FAT VBR */
|
|
mem_set(buf, 0, ss);
|
|
mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11); /* Boot jump code (x86), OEM name */
|
|
st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */
|
|
buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */
|
|
st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */
|
|
buf[BPB_NumFATs] = (BYTE)n_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) { fr = FR_DISK_ERR; goto EXIT; } /* 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); /* Entry 0 */
|
|
st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */
|
|
st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */
|
|
} else {
|
|
st_dword(buf + 0, (fsty == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */
|
|
}
|
|
nsect = sz_fat; /* Number of FAT sectors */
|
|
do { /* Fill FAT sectors */
|
|
n = (nsect > sz_buf) ? sz_buf : nsect;
|
|
if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
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) { fr = FR_DISK_ERR; goto EXIT; }
|
|
sect += n; nsect -= n;
|
|
} while (nsect);
|
|
|
|
|
|
/* Flush the virtual partition sector */
|
|
if (fsty == FS_FAT32) {
|
|
sect = b_fat - 1;
|
|
mem_set(buf, 0, sz_buf * ss);
|
|
if (disk_write(pdrv, buf, sect, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
}
|
|
|
|
/* A FAT volume has been created here */
|
|
|
|
/* Determine system ID in the MBR partition table */
|
|
if (fsty == FS_FAT32) {
|
|
sys = ipart > 4 ? 0x0B : 0x0C; /* FAT32X */
|
|
} else if (sz_vol >= 0x10000) {
|
|
sys = 0x06; /* FAT12/16 (large) */
|
|
} else if (fsty == FS_FAT16) {
|
|
sys = 0x04; /* FAT16 */
|
|
} else {
|
|
sys = 0x01; /* FAT12 */
|
|
}
|
|
|
|
|
|
/* Update partition information */
|
|
#if FF_MULTI_PARTITION
|
|
if (ipart != 0) { /* Created in the existing partition */
|
|
if (!gpt_part) {
|
|
/* Update system ID in the partition table in MBR or EBR */
|
|
if (ipart > 4) {
|
|
pte = &multi_buf[MBR_Table];
|
|
} else {
|
|
pte = &multi_buf[MBR_Table + (ipart - 1) * SZ_PTE];
|
|
}
|
|
n = (ipart > 4) ? extended_base + extended_offset : 0;
|
|
pte[4] = sys;
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_write(LD2DI(vol), multi_buf, n, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; } /* Write it to teh MBR */
|
|
#else
|
|
if (disk_write(LD2PD(vol), multi_buf, n, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; } /* Write it to teh MBR */
|
|
#endif
|
|
} else {
|
|
b_vol = LD2PS(vol); /* Volume start sector */
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_read(LD2DI(vol), multi_buf, b_vol, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
#else
|
|
if (disk_read(LD2PD(vol), multi_buf, b_vol, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
#endif
|
|
pte = &multi_buf[MBR_Table];
|
|
pte[4] = sys;
|
|
#ifndef __LITEOS_M__
|
|
if (disk_raw_write(LD2DI(vol), multi_buf, b_vol, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; } /* Write it to the MBR */
|
|
#else
|
|
if (disk_write(LD2PD(vol), multi_buf, b_vol, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; } /* Write it to the MBR */
|
|
#endif
|
|
}
|
|
} else
|
|
#endif
|
|
{ /* 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) goto EXIT;
|
|
}
|
|
}
|
|
|
|
if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
#ifndef __LITEOS_M__
|
|
switch(fsty) {
|
|
case FS_FAT12:
|
|
PRINTK("format to FAT12, %u sectors per cluster.\n", pau);
|
|
break;
|
|
case FS_FAT16:
|
|
PRINTK("Format to FAT16, %u sectors per cluster.\n", pau);
|
|
break;
|
|
case FS_FAT32:
|
|
default:
|
|
PRINTK("Format to FAT32, %u sectors per cluster.\n", pau);
|
|
}
|
|
#endif
|
|
EXIT:
|
|
#if FF_MULTI_PARTITION
|
|
ff_memfree(multi_buf);
|
|
#endif
|
|
return fr;
|
|
}
|
|
|
|
#ifndef __LITEOS_M__
|
|
FRESULT _mkfs(los_part *partition, const MKFS_PARM* opt, BYTE *work, UINT len)
|
|
{
|
|
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, fsty, sys, *buf, *pte, pdrv, ipart;
|
|
size_t ss;
|
|
DWORD sz_buf, sz_blk, n_clst, pau, nsect, n;
|
|
LBA_t sz_vol, b_vol, b_fat, b_data; /* Size of volume, Base LBA of volume, fat, data */
|
|
LBA_t sect, lba[2];
|
|
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 */
|
|
DSTATUS ds;
|
|
FRESULT fr = FR_OK;
|
|
#if FF_MULTI_PARTITION
|
|
int extended_br;
|
|
int extended_pos = -1;
|
|
DWORD extended_base = 0;
|
|
DWORD extended_offset = 0;
|
|
BYTE* multi_buf = NULL;
|
|
int gpt_part = 0;
|
|
#endif
|
|
|
|
pdrv = partition->part_id; /* Physical dirve */
|
|
ipart = partition->part_no_mbr; /* 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;
|
|
n = opt->n_sect * ss;
|
|
sz_au = (n <= 0x1000000 && (n & (n - 1)) == 0) ? n : 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 FF_MULTI_PARTITION
|
|
b_vol = sz_vol = 0;
|
|
/* Determine where the volume to be located (b_vol, sz_vol) */
|
|
if (ipart != 0) { /* Is the volume associated with any specific partition? */
|
|
/* Get partition information from partition table in the MBR and EBR to set boot sector properly */
|
|
if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */
|
|
if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */
|
|
if (buf[MBR_Table + PTE_System] != GPT_PROTECTIVE_MBR) {
|
|
pte = buf + (MBR_Table + (ipart - 1) * SZ_PTE);
|
|
extended_br = ipart - MBR_PRIMARY_PART_NUM;
|
|
if (extended_br > 0) {
|
|
for (i = 0; i < MBR_PRIMARY_PART_NUM; i++) {
|
|
pte = &buf[MBR_Table + i * SZ_PTE];
|
|
if (pte[PTE_System] == EXTENDED_PARTITION_LBA) extended_pos = i;
|
|
}
|
|
pte = &buf[MBR_Table + extended_pos * SZ_PTE];
|
|
extended_base = ld_dword(pte + PTE_StLba);
|
|
if (disk_raw_read(partition->disk_id, buf, extended_base, 1) != RES_OK) {
|
|
return FR_DISK_ERR;
|
|
}
|
|
pte = &buf[MBR_Table];
|
|
for (; extended_br > 1; --extended_br) {
|
|
pte = &buf[MBR_Table];
|
|
extended_offset = ld_dword(pte + SZ_PTE + PTE_StLba);
|
|
mem_set(buf, 0, len);
|
|
if (disk_raw_read(partition->disk_id, buf, extended_base + extended_offset, 1) != RES_OK) {
|
|
return FR_DISK_ERR;
|
|
}
|
|
}
|
|
}
|
|
if (!pte[PTE_System]) return FR_MKFS_ABORTED; /* No partition? */
|
|
} else {
|
|
gpt_part = 1;
|
|
b_vol = partition->sector_start; /* Volume start sector */
|
|
if (disk_read(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Load GPT partition info */
|
|
if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if GPT partition is valid */
|
|
}
|
|
|
|
multi_buf = ff_memalloc(ss);
|
|
if (multi_buf == NULL)
|
|
return FR_NOT_ENOUGH_CORE;
|
|
|
|
mem_cpy(multi_buf, buf, ss);
|
|
if (!gpt_part)
|
|
if (!pte[PTE_System]) { /* No partition? */
|
|
fr = FR_MKFS_ABORTED;
|
|
goto EXIT;
|
|
}
|
|
b_vol = partition->sector_start; /* Volume start sector */
|
|
sz_vol = partition->sector_count; /* Volume size */
|
|
} else
|
|
#endif
|
|
{
|
|
/* Create a single-partition in this function */
|
|
if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) {fr = FR_DISK_ERR; goto EXIT;}
|
|
b_vol = (fsopt & FM_SFD) ? 0 : 63; /* Volume start sector */ if (sz_vol < b_vol) {fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
sz_vol -= b_vol; /* Volume size */
|
|
}
|
|
if (sz_vol < VOL_MIN_SIZE) {fr = FR_MKFS_ABORTED; goto EXIT;} /* 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 (sz_au > 128) {fr = FR_INVALID_PARAMETER; goto EXIT;} /* 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)) {fr = FR_INVALID_PARAMETER; goto EXIT;} /* no-FAT? */
|
|
fsty = FS_FAT16;
|
|
} while (0);
|
|
|
|
/* Create an FAT/32 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 + FAT_RESERVED_NUM) * FAT32_ENTRY_SIZE + ss - 1) / ss; /* FAT size [sector] */
|
|
sz_rsv = FAT32_RESERVED_SECTOR; /* Number of reserved sectors */
|
|
sz_dir = 0; /* No static directory */
|
|
if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) {fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
} 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 + FAT_RESERVED_NUM) * FAT16_ENTRY_SIZE; /* 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 = FAT_RESERVED_SECTOR; /* Number of reserved sectors */
|
|
sz_dir = (DWORD)n_root * SZDIRE / ss; /* Rootdir size [sector] */
|
|
}
|
|
b_fat = b_vol + sz_rsv; /* FAT base */
|
|
b_data = b_fat + sz_fat * n_fat + sz_dir; /* Data base */
|
|
|
|
/* Align data base 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 base */
|
|
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) { /* Too small volume */
|
|
fr = FR_MKFS_ABORTED;
|
|
goto EXIT;
|
|
}
|
|
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 */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
}
|
|
if (fsty == FS_FAT16) {
|
|
if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */
|
|
if (sz_au == 0 && (pau * 2) <= FAT_MAX_CLUSTER_SIZE) {
|
|
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) <= FAT32_MAX_CLUSTER_SIZE) continue; /* Adjust cluster size and retry */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */
|
|
if (sz_au == 0 && (sz_au = pau * 2) <= FAT32_MAX_CLUSTER_SIZE) continue; /* Adjust cluster size and retry */
|
|
{fr = FR_MKFS_ABORTED; goto EXIT;}
|
|
}
|
|
}
|
|
if (fsty == FS_FAT12 && n_clst > MAX_FAT12) {fr = FR_MKFS_ABORTED; goto EXIT;} /* Too many clusters for FAT12 */
|
|
|
|
/* Ok, it is the valid cluster configuration */
|
|
break;
|
|
} while (1);
|
|
|
|
#if FF_USE_TRIM
|
|
lba[0] = b_vol; lba[1] = b_vol + sz_vol - 1; /* Inform storage device that the volume area may be erased */
|
|
disk_ioctl(pdrv, CTRL_TRIM, lba);
|
|
#endif
|
|
/* Create FAT VBR */
|
|
mem_set(buf, 0, ss);
|
|
mem_cpy(buf + BS_JmpBoot, JUMP_CODE "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) { fr = FR_DISK_ERR; goto EXIT; } /* 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 */
|
|
los_disk_cache_clear(pdrv);
|
|
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); /* Entry 0 */
|
|
st_dword(buf + 4, DISK_ERROR); /* Entry 1 */
|
|
st_dword(buf + 8, FAT32_END_OF_CLUSTER); /* Entry 2 (root directory) */
|
|
} else {
|
|
st_dword(buf + 0, (fsty == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */
|
|
}
|
|
nsect = sz_fat; /* Number of FAT sectors */
|
|
do { /* Fill FAT sectors */
|
|
n = (nsect > sz_buf) ? sz_buf : nsect;
|
|
if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
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) { fr = FR_DISK_ERR; goto EXIT; }
|
|
sect += n;
|
|
nsect -= n;
|
|
} while (nsect);
|
|
|
|
/* Flush the virtual partition sector */
|
|
if (fsty == FS_FAT32) {
|
|
sect = b_fat - 1;
|
|
mem_set(buf, 0, sz_buf * ss);
|
|
if (disk_write(pdrv, buf, sect, 1) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
}
|
|
|
|
/* A FAT volume has been created here */
|
|
|
|
/* Determine system ID in the MBR partition table */
|
|
if (fsty == FS_FAT32) {
|
|
sys = ipart > 4 ? 0x0B : 0x0C; /* FAT32X */
|
|
} else {
|
|
if (sz_vol >= 0x10000) {
|
|
sys = FAT16B; /* FAT12/16 (large) */
|
|
} else {
|
|
sys = (fsty == FS_FAT16) ? FAT16 : FAT12; /* FAT16 : FAT12 */
|
|
}
|
|
}
|
|
|
|
/* Update partition information */
|
|
#if FF_MULTI_PARTITION
|
|
if (ipart != 0) { /* Created in the existing partition */
|
|
if (!gpt_part) {
|
|
/* Update system ID in the partition table in MBR or EBR */
|
|
if (ipart > MBR_PRIMARY_PART_NUM) {
|
|
pte = &multi_buf[MBR_Table];
|
|
} else {
|
|
pte = &multi_buf[MBR_Table + (ipart - 1) * SZ_PTE];
|
|
}
|
|
n = (ipart > MBR_PRIMARY_PART_NUM) ? (extended_base + extended_offset) : 0;
|
|
pte[PTE_System] = sys;
|
|
if (disk_raw_write(partition->disk_id, multi_buf, n, 1) != RES_OK) {
|
|
/* Write it to teh MBR */
|
|
fr = FR_DISK_ERR;
|
|
goto EXIT;
|
|
}
|
|
} else {
|
|
b_vol = partition->sector_start; /* Volume start sector */
|
|
if (disk_raw_read(partition->disk_id, multi_buf, b_vol, 1) != RES_OK) {
|
|
fr = FR_DISK_ERR;
|
|
goto EXIT;
|
|
}
|
|
pte = &multi_buf[MBR_Table];
|
|
pte[PTE_System] = sys;
|
|
if (disk_raw_write(partition->disk_id, multi_buf, b_vol, 1) != RES_OK) {
|
|
/* Write it to the MBR */
|
|
fr = FR_DISK_ERR;
|
|
goto EXIT;
|
|
}
|
|
}
|
|
} else
|
|
#endif
|
|
{ /* 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) goto EXIT; /* Write it to the MBR */
|
|
}
|
|
}
|
|
|
|
if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) { fr = FR_DISK_ERR; goto EXIT; }
|
|
|
|
switch (fsty) {
|
|
case FS_FAT12:
|
|
PRINTK("format to FAT12, %u sectors per cluster.\n", pau);
|
|
break;
|
|
case FS_FAT16:
|
|
PRINTK("Format to FAT16, %u sectors per cluster.\n", pau);
|
|
break;
|
|
case FS_FAT32:
|
|
PRINTK("Format to FAT32, %u sectors per cluster.\n", pau);
|
|
break;
|
|
default:
|
|
PRINTK("Unknown format.\n");
|
|
}
|
|
|
|
EXIT:
|
|
#if FF_MULTI_PARTITION
|
|
ff_memfree(multi_buf);
|
|
#endif
|
|
return fr;
|
|
}
|
|
#endif /* __LITEOS_M__ */
|
|
|
|
#if FF_MULTI_PARTITION
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Create Partition Table on the Physical Drive */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_fdisk (
|
|
BYTE pdrv, /* Physical drive number */
|
|
const DWORD szt[], /* Pointer to the size table for each partitions */
|
|
void* work /* Pointer to the working buffer (null: use heap memory) */
|
|
)
|
|
{
|
|
BYTE *buf = (BYTE*)work;
|
|
DSTATUS stat;
|
|
LBA_t ptbl[4] = {0};
|
|
int i = 0;;
|
|
FRESULT res;
|
|
|
|
/* Initialize the physical drive */
|
|
stat = disk_initialize(pdrv);
|
|
if (stat & STA_NOINIT) return FR_NOT_READY;
|
|
if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
|
|
if (!buf) return FR_NOT_ENOUGH_CORE;
|
|
|
|
while (szt[i] != 0 && i < 4) {
|
|
ptbl[i] = szt[i];
|
|
i++;
|
|
}
|
|
|
|
res = create_partition(pdrv, ptbl, 0x07, buf); /* Create partitions (system ID is temporary setting and determined by f_mkfs) */
|
|
|
|
LEAVE_MKFS(res);
|
|
}
|
|
|
|
#endif /* FF_MULTI_PARTITION */
|
|
#endif /* !FF_FS_READONLY && FF_USE_MKFS */
|
|
|
|
|
|
|
|
|
|
#if FF_USE_STRFUNC
|
|
#if FF_USE_LFN && FF_LFN_UNICODE && (FF_STRF_ENCODE < 0 || FF_STRF_ENCODE > 3)
|
|
#error Wrong FF_STRF_ENCODE setting
|
|
#endif
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get a String from the File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
TCHAR* f_gets (
|
|
TCHAR* buff, /* Pointer to the buffer to store read string */
|
|
int len, /* Size of string buffer (items) */
|
|
FIL* fp /* Pointer to the file object */
|
|
)
|
|
{
|
|
int nc = 0;
|
|
TCHAR *p = buff;
|
|
BYTE s[4];
|
|
UINT rc;
|
|
DWORD dc;
|
|
#if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE <= 2
|
|
WCHAR wc;
|
|
#endif
|
|
#if FF_USE_LFN && FF_LFN_UNICODE && FF_STRF_ENCODE == 3
|
|
UINT ct;
|
|
#endif
|
|
|
|
#if FF_USE_LFN && FF_LFN_UNICODE /* With code conversion (Unicode API) */
|
|
/* Make a room for the character and terminator */
|
|
if (FF_LFN_UNICODE == 1) len -= (FF_STRF_ENCODE == 0) ? 1 : 2;
|
|
if (FF_LFN_UNICODE == 2) len -= (FF_STRF_ENCODE == 0) ? 3 : 4;
|
|
if (FF_LFN_UNICODE == 3) len -= 1;
|
|
while (nc < len) {
|
|
#if FF_STRF_ENCODE == 0 /* Read a character in ANSI/OEM */
|
|
f_read(fp, s, 1, &rc); /* Get a code unit */
|
|
if (rc != 1) break; /* EOF? */
|
|
wc = s[0];
|
|
if (dbc_1st((BYTE)wc)) { /* DBC 1st byte? */
|
|
f_read(fp, s, 1, &rc); /* Get 2nd byte */
|
|
if (rc != 1 || !dbc_2nd(s[0])) continue; /* Wrong code? */
|
|
wc = wc << 8 | s[0];
|
|
}
|
|
dc = ff_oem2uni(wc, CODEPAGE); /* Convert ANSI/OEM into Unicode */
|
|
if (dc == 0) continue; /* Conversion error? */
|
|
#elif FF_STRF_ENCODE == 1 || FF_STRF_ENCODE == 2 /* Read a character in UTF-16LE/BE */
|
|
f_read(fp, s, 2, &rc); /* Get a code unit */
|
|
if (rc != 2) break; /* EOF? */
|
|
dc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];
|
|
if (IsSurrogateL(dc)) continue; /* Broken surrogate pair? */
|
|
if (IsSurrogateH(dc)) { /* High surrogate? */
|
|
f_read(fp, s, 2, &rc); /* Get low surrogate */
|
|
if (rc != 2) break; /* EOF? */
|
|
wc = (FF_STRF_ENCODE == 1) ? ld_word(s) : s[0] << 8 | s[1];
|
|
if (!IsSurrogateL(wc)) continue; /* Broken surrogate pair? */
|
|
dc = ((dc & 0x3FF) + 0x40) << 10 | (wc & 0x3FF); /* Merge surrogate pair */
|
|
}
|
|
#else /* Read a character in UTF-8 */
|
|
f_read(fp, s, 1, &rc); /* Get a code unit */
|
|
if (rc != 1) break; /* EOF? */
|
|
dc = s[0];
|
|
if (dc >= 0x80) { /* Multi-byte sequence? */
|
|
ct = 0;
|
|
if ((dc & 0xE0) == 0xC0) { /* 2-byte sequence? */
|
|
dc &= 0x1F; ct = 1;
|
|
}
|
|
if ((dc & 0xF0) == 0xE0) { /* 3-byte sequence? */
|
|
dc &= 0x0F; ct = 2;
|
|
}
|
|
if ((dc & 0xF8) == 0xF0) { /* 4-byte sequence? */
|
|
dc &= 0x07; ct = 3;
|
|
}
|
|
if (ct == 0) continue;
|
|
f_read(fp, s, ct, &rc); /* Get trailing bytes */
|
|
if (rc != ct) break;
|
|
rc = 0;
|
|
do { /* Merge the byte sequence */
|
|
if ((s[rc] & 0xC0) != 0x80) break;
|
|
dc = dc << 6 | (s[rc] & 0x3F);
|
|
} while (++rc < ct);
|
|
if (rc != ct || dc < 0x80 || IsSurrogate(dc) || dc >= 0x110000) continue; /* Wrong encoding? */
|
|
}
|
|
#endif
|
|
/* A code point is avaialble in dc to be output */
|
|
|
|
if (FF_USE_STRFUNC == 2 && dc == '\r') continue; /* Strip \r off if needed */
|
|
#if FF_LFN_UNICODE == 1 || FF_LFN_UNICODE == 3 /* Output it in UTF-16/32 encoding */
|
|
if (FF_LFN_UNICODE == 1 && dc >= 0x10000) { /* Out of BMP at UTF-16? */
|
|
*p++ = (TCHAR)(0xD800 | ((dc >> 10) - 0x40)); nc++; /* Make and output high surrogate */
|
|
dc = 0xDC00 | (dc & 0x3FF); /* Make low surrogate */
|
|
}
|
|
*p++ = (TCHAR)dc; nc++;
|
|
if (dc == '\n') break; /* End of line? */
|
|
#elif FF_LFN_UNICODE == 2 /* Output it in UTF-8 encoding */
|
|
if (dc < 0x80) { /* Single byte? */
|
|
*p++ = (TCHAR)dc;
|
|
nc++;
|
|
if (dc == '\n') break; /* End of line? */
|
|
} else if (dc < 0x800) { /* 2-byte sequence? */
|
|
*p++ = (TCHAR)(0xC0 | (dc >> 6 & 0x1F));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
|
|
nc += 2;
|
|
} else if (dc < 0x10000) { /* 3-byte sequence? */
|
|
*p++ = (TCHAR)(0xE0 | (dc >> 12 & 0x0F));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
|
|
nc += 3;
|
|
} else { /* 4-byte sequence */
|
|
*p++ = (TCHAR)(0xF0 | (dc >> 18 & 0x07));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 12 & 0x3F));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 6 & 0x3F));
|
|
*p++ = (TCHAR)(0x80 | (dc >> 0 & 0x3F));
|
|
nc += 4;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#else /* Byte-by-byte read without any conversion (ANSI/OEM API) */
|
|
len -= 1; /* Make a room for the terminator */
|
|
while (nc < len) {
|
|
f_read(fp, s, 1, &rc); /* Get a byte */
|
|
if (rc != 1) break; /* EOF? */
|
|
dc = s[0];
|
|
if (FF_USE_STRFUNC == 2 && dc == '\r') continue;
|
|
*p++ = (TCHAR)dc; nc++;
|
|
if (dc == '\n') break;
|
|
}
|
|
#endif
|
|
|
|
*p = 0; /* Terminate the string */
|
|
return nc ? buff : 0; /* When no data read due to EOF or error, return with error. */
|
|
}
|
|
|
|
|
|
|
|
|
|
#if !FF_FS_READONLY
|
|
#include <stdarg.h>
|
|
#define SZ_PUTC_BUF 64
|
|
#define SZ_NUM_BUF 32
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Put a Character to the File (with sub-functions) */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
/* Output buffer and work area */
|
|
|
|
typedef struct {
|
|
FIL *fp; /* Ptr to the writing file */
|
|
int idx, nchr; /* Write index of buf[] (-1:error), number of encoding units written */
|
|
#if FF_USE_LFN && FF_LFN_UNICODE == 1
|
|
WCHAR hs;
|
|
#elif FF_USE_LFN && FF_LFN_UNICODE == 2
|
|
BYTE bs[4];
|
|
UINT wi, ct;
|
|
#endif
|
|
BYTE buf[SZ_PUTC_BUF]; /* Write buffer */
|
|
} putbuff;
|
|
|
|
|
|
/* Buffered file write with code conversion */
|
|
|
|
static void putc_bfd (putbuff* pb, TCHAR c)
|
|
{
|
|
UINT n;
|
|
int i, nc;
|
|
#if FF_USE_LFN && FF_LFN_UNICODE
|
|
WCHAR hs, wc;
|
|
#if FF_LFN_UNICODE == 2
|
|
DWORD dc;
|
|
const TCHAR* tp;
|
|
#endif
|
|
#endif
|
|
|
|
if (FF_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */
|
|
putc_bfd(pb, '\r');
|
|
}
|
|
|
|
i = pb->idx; /* Write index of pb->buf[] */
|
|
if (i < 0) return; /* In write error? */
|
|
nc = pb->nchr; /* Write unit counter */
|
|
|
|
#if FF_USE_LFN && FF_LFN_UNICODE
|
|
#if FF_LFN_UNICODE == 1 /* UTF-16 input */
|
|
if (IsSurrogateH(c)) { /* Is this a high-surrogate? */
|
|
pb->hs = c; return; /* Save it for next */
|
|
}
|
|
hs = pb->hs; pb->hs = 0;
|
|
if (hs != 0) { /* Is there a leading high-surrogate? */
|
|
if (!IsSurrogateL(c)) hs = 0; /* Discard high-surrogate if not a surrogate pair */
|
|
} else {
|
|
if (IsSurrogateL(c)) return; /* Discard stray low-surrogate */
|
|
}
|
|
wc = c;
|
|
#elif FF_LFN_UNICODE == 2 /* UTF-8 input */
|
|
for (;;) {
|
|
if (pb->ct == 0) { /* Out of multi-byte sequence? */
|
|
pb->bs[pb->wi = 0] = (BYTE)c; /* Save 1st byte */
|
|
if ((BYTE)c < 0x80) break; /* Single byte code? */
|
|
if (((BYTE)c & 0xE0) == 0xC0) pb->ct = 1; /* 2-byte sequence? */
|
|
if (((BYTE)c & 0xF0) == 0xE0) pb->ct = 2; /* 3-byte sequence? */
|
|
if (((BYTE)c & 0xF8) == 0xF0) pb->ct = 3; /* 4-byte sequence? */
|
|
return; /* Wrong leading byte (discard it) */
|
|
} else { /* In the multi-byte sequence */
|
|
if (((BYTE)c & 0xC0) != 0x80) { /* Broken sequence? */
|
|
pb->ct = 0; continue; /* Discard the sequense */
|
|
}
|
|
pb->bs[++pb->wi] = (BYTE)c; /* Save the trailing byte */
|
|
if (--pb->ct == 0) break; /* End of the sequence? */
|
|
return;
|
|
}
|
|
}
|
|
tp = (const TCHAR*)pb->bs;
|
|
dc = tchar2uni(&tp); /* UTF-8 ==> UTF-16 */
|
|
if (dc == 0xFFFFFFFF) return; /* Wrong code? */
|
|
hs = (WCHAR)(dc >> 16);
|
|
wc = (WCHAR)dc;
|
|
#elif FF_LFN_UNICODE == 3 /* UTF-32 input */
|
|
if (IsSurrogate(c) || c >= 0x110000) return; /* Discard invalid code */
|
|
if (c >= 0x10000) { /* Out of BMP? */
|
|
hs = (WCHAR)(0xD800 | ((c >> 10) - 0x40)); /* Make high surrogate */
|
|
wc = 0xDC00 | (c & 0x3FF); /* Make low surrogate */
|
|
} else {
|
|
hs = 0;
|
|
wc = (WCHAR)c;
|
|
}
|
|
#endif
|
|
/* A code point in UTF-16 is available in hs and wc */
|
|
|
|
#if FF_STRF_ENCODE == 1 /* Write a code point in UTF-16LE */
|
|
if (hs != 0) { /* Surrogate pair? */
|
|
st_word(&pb->buf[i], hs);
|
|
i += 2;
|
|
nc++;
|
|
}
|
|
st_word(&pb->buf[i], wc);
|
|
i += 2;
|
|
#elif FF_STRF_ENCODE == 2 /* Write a code point in UTF-16BE */
|
|
if (hs != 0) { /* Surrogate pair? */
|
|
pb->buf[i++] = (BYTE)(hs >> 8);
|
|
pb->buf[i++] = (BYTE)hs;
|
|
nc++;
|
|
}
|
|
pb->buf[i++] = (BYTE)(wc >> 8);
|
|
pb->buf[i++] = (BYTE)wc;
|
|
#elif FF_STRF_ENCODE == 3 /* Write a code point in UTF-8 */
|
|
if (hs != 0) { /* 4-byte sequence? */
|
|
nc += 3;
|
|
hs = (hs & 0x3FF) + 0x40;
|
|
pb->buf[i++] = (BYTE)(0xF0 | hs >> 8);
|
|
pb->buf[i++] = (BYTE)(0x80 | (hs >> 2 & 0x3F));
|
|
pb->buf[i++] = (BYTE)(0x80 | (hs & 3) << 4 | (wc >> 6 & 0x0F));
|
|
pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));
|
|
} else {
|
|
if (wc < 0x80) { /* Single byte? */
|
|
pb->buf[i++] = (BYTE)wc;
|
|
} else {
|
|
if (wc < 0x800) { /* 2-byte sequence? */
|
|
nc += 1;
|
|
pb->buf[i++] = (BYTE)(0xC0 | wc >> 6);
|
|
} else { /* 3-byte sequence */
|
|
nc += 2;
|
|
pb->buf[i++] = (BYTE)(0xE0 | wc >> 12);
|
|
pb->buf[i++] = (BYTE)(0x80 | (wc >> 6 & 0x3F));
|
|
}
|
|
pb->buf[i++] = (BYTE)(0x80 | (wc & 0x3F));
|
|
}
|
|
}
|
|
#else /* Write a code point in ANSI/OEM */
|
|
if (hs != 0) return;
|
|
wc = ff_uni2oem(wc, CODEPAGE); /* UTF-16 ==> ANSI/OEM */
|
|
if (wc == 0) return;
|
|
if (wc >= 0x100) {
|
|
pb->buf[i++] = (BYTE)(wc >> 8); nc++;
|
|
}
|
|
pb->buf[i++] = (BYTE)wc;
|
|
#endif
|
|
|
|
#else /* ANSI/OEM input (without re-encoding) */
|
|
pb->buf[i++] = (BYTE)c;
|
|
#endif
|
|
|
|
if (i >= (int)(sizeof pb->buf) - 4) { /* Write buffered characters to the file */
|
|
f_write(pb->fp, pb->buf, (UINT)i, &n);
|
|
i = (n == (UINT)i) ? 0 : -1;
|
|
}
|
|
pb->idx = i;
|
|
pb->nchr = nc + 1;
|
|
}
|
|
|
|
|
|
/* Flush remaining characters in the buffer */
|
|
|
|
static int putc_flush (putbuff* pb)
|
|
{
|
|
UINT nw;
|
|
|
|
if ( pb->idx >= 0 /* Flush buffered characters to the file */
|
|
&& f_write(pb->fp, pb->buf, (UINT)pb->idx, &nw) == FR_OK
|
|
&& (UINT)pb->idx == nw) return pb->nchr;
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* Initialize write buffer */
|
|
|
|
static void putc_init (putbuff* pb, FIL* fp)
|
|
{
|
|
mem_set(pb, 0, sizeof (putbuff));
|
|
pb->fp = fp;
|
|
}
|
|
|
|
|
|
|
|
int f_putc (
|
|
TCHAR c, /* A character to be output */
|
|
FIL* fp /* Pointer to the file object */
|
|
)
|
|
{
|
|
putbuff pb;
|
|
|
|
|
|
putc_init(&pb, fp);
|
|
putc_bfd(&pb, c); /* Put the character */
|
|
return putc_flush(&pb);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Put a String to the File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
int f_puts (
|
|
const TCHAR* str, /* Pointer to the string to be output */
|
|
FIL* fp /* Pointer to the file object */
|
|
)
|
|
{
|
|
putbuff pb;
|
|
|
|
|
|
putc_init(&pb, fp);
|
|
while (*str) putc_bfd(&pb, *str++); /* Put the string */
|
|
return putc_flush(&pb);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Put a Formatted String to the File */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
int f_printf (
|
|
FIL* fp, /* Pointer to the file object */
|
|
const TCHAR* fmt, /* Pointer to the format string */
|
|
... /* Optional arguments... */
|
|
)
|
|
{
|
|
va_list arp;
|
|
putbuff pb;
|
|
BYTE f, r;
|
|
UINT i, j, w;
|
|
DWORD v;
|
|
TCHAR c, d, str[32], *p;
|
|
|
|
|
|
putc_init(&pb, fp);
|
|
|
|
va_start(arp, fmt);
|
|
|
|
for (;;) {
|
|
c = *fmt++;
|
|
if (c == 0) break; /* End of string */
|
|
if (c != '%') { /* Non escape character */
|
|
putc_bfd(&pb, c);
|
|
continue;
|
|
}
|
|
w = f = 0;
|
|
c = *fmt++;
|
|
if (c == '0') { /* Flag: '0' padding */
|
|
f = 1; c = *fmt++;
|
|
} else {
|
|
if (c == '-') { /* Flag: left justified */
|
|
f = 2; c = *fmt++;
|
|
}
|
|
}
|
|
if (c == '*') { /* Minimum width by argument */
|
|
w = va_arg(arp, int);
|
|
c = *fmt++;
|
|
} else {
|
|
while (IsDigit(c)) { /* Minimum width */
|
|
w = w * 10 + c - '0';
|
|
c = *fmt++;
|
|
}
|
|
}
|
|
if (c == 'l' || c == 'L') { /* Type prefix: Size is long int */
|
|
f |= 4; c = *fmt++;
|
|
}
|
|
if (c == 0) break;
|
|
d = c;
|
|
if (IsLower(d)) d -= 0x20;
|
|
switch (d) { /* Atgument type is... */
|
|
case 'S': /* String */
|
|
p = va_arg(arp, TCHAR*);
|
|
for (j = 0; p[j]; j++) ;
|
|
if (!(f & 2)) { /* Right padded */
|
|
while (j++ < w) putc_bfd(&pb, ' ') ;
|
|
}
|
|
while (*p) putc_bfd(&pb, *p++) ; /* String body */
|
|
while (j++ < w) putc_bfd(&pb, ' ') ; /* Left padded */
|
|
continue;
|
|
|
|
case 'C': /* Character */
|
|
putc_bfd(&pb, (TCHAR)va_arg(arp, int));
|
|
continue;
|
|
|
|
case 'B': /* Unsigned binary */
|
|
r = 2;
|
|
break;
|
|
|
|
case 'O': /* Unsigned octal */
|
|
r = 8;
|
|
break;
|
|
|
|
case 'D': /* Signed decimal */
|
|
case 'U': /* Unsigned decimal */
|
|
r = 10;
|
|
break;
|
|
|
|
case 'X': /* Unsigned hexdecimal */
|
|
r = 16;
|
|
break;
|
|
|
|
default: /* Unknown type (pass-through) */
|
|
putc_bfd(&pb, c); continue;
|
|
}
|
|
|
|
/* Get an argument and put it in numeral */
|
|
v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int));
|
|
if (d == 'D' && (v & 0x80000000)) {
|
|
v = 0 - v;
|
|
f |= 8;
|
|
}
|
|
i = 0;
|
|
do {
|
|
d = (TCHAR)(v % r); v /= r;
|
|
if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
|
|
str[i++] = d + '0';
|
|
} while (v && i < sizeof str / sizeof *str);
|
|
if (f & 8) str[i++] = '-';
|
|
j = i; d = (f & 1) ? '0' : ' ';
|
|
if (!(f & 2)) {
|
|
while (j++ < w) putc_bfd(&pb, d); /* Right pad */
|
|
}
|
|
do {
|
|
putc_bfd(&pb, str[--i]); /* Number body */
|
|
} while (i);
|
|
while (j++ < w) putc_bfd(&pb, d); /* Left pad */
|
|
}
|
|
|
|
va_end(arp);
|
|
|
|
return putc_flush(&pb);
|
|
}
|
|
|
|
#endif /* !FF_FS_READONLY */
|
|
#endif /* FF_USE_STRFUNC */
|
|
|
|
|
|
int fatfs_get_vol(FATFS *fat)
|
|
{
|
|
int vol;
|
|
|
|
for (vol = 0; vol < FF_VOLUMES; vol ++) {
|
|
if (FatFs[vol] == fat)
|
|
return vol;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
void f_settimestatus(UINT status)
|
|
{
|
|
time_status = status;
|
|
}
|
|
|
|
FRESULT f_fcheckfat(DIR_FILE* dir_info)
|
|
{
|
|
FRESULT res;
|
|
FATFS *fs;
|
|
DWORD val = 0, tcl, clust_size;
|
|
|
|
res = validate(&(dir_info->f_dir.obj), &fs); /* Lock volume */
|
|
if (res == FR_OK) {
|
|
clust_size = (DWORD)fs->csize * SS(fs); /* Cluster size */
|
|
tcl = (DWORD)(dir_info->fno.fsize / clust_size) + ((dir_info->fno.fsize & (clust_size - 1)) ? 1 : 0); /* Number of clusters required */
|
|
if (dir_info->fno.fsize == 0) { /* When set file size to zero, remove entire cluster chain */
|
|
if (dir_info->fno.sclst != 0) {
|
|
#if !FF_FS_READONLY
|
|
res = remove_chain(&(dir_info->f_dir.obj), dir_info->fno.sclst, 0);
|
|
#else
|
|
res = FR_DENIED;
|
|
#endif
|
|
} else
|
|
res = FR_OK;
|
|
} else { /* When truncate a part of the file, remove remaining clusters */
|
|
val = get_fat(&(dir_info->f_dir.obj), dir_info->fno.sclst + tcl - 1);
|
|
if (val == 0xFFFFFFFF) {
|
|
res = FR_DISK_ERR;
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
if (val == 1) {
|
|
res = FR_INT_ERR;
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
if (val == get_end_of_cluster(fs)) {
|
|
res = FR_OK;
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
if (val < fs->n_fatent) {
|
|
#if !FF_FS_READONLY
|
|
res = remove_chain(&(dir_info->f_dir.obj), val, dir_info->fno.sclst + tcl - 1);
|
|
#else
|
|
res = FR_DENIED;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
LEAVE_FF(fs, res);
|
|
}
|
|
|
|
|
|
#if FF_CODE_PAGE == 0
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Set Active Codepage for the Path Name */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
FRESULT f_setcp (
|
|
WORD cp /* Value to be set as active code page */
|
|
)
|
|
{
|
|
static const WORD validcp[22] = { 437, 720, 737, 771, 775, 850, 852, 855, 857, 860, 861, 862, 863, 864, 865, 866, 869, 932, 936, 949, 950, 0};
|
|
static const BYTE *const tables[22] = {Ct437, Ct720, Ct737, Ct771, Ct775, Ct850, Ct852, Ct855, Ct857, Ct860, Ct861, Ct862, Ct863, Ct864, Ct865, Ct866, Ct869, Dc932, Dc936, Dc949, Dc950, 0};
|
|
UINT i;
|
|
|
|
|
|
for (i = 0; validcp[i] != 0 && validcp[i] != cp; i++) ; /* Find the code page */
|
|
if (validcp[i] != cp) return FR_INVALID_PARAMETER; /* Not found? */
|
|
|
|
CodePage = cp;
|
|
if (cp >= 900) { /* DBCS */
|
|
ExCvt = 0;
|
|
DbcTbl = tables[i];
|
|
} else { /* SBCS */
|
|
ExCvt = tables[i];
|
|
DbcTbl = 0;
|
|
}
|
|
return FR_OK;
|
|
}
|
|
#endif /* FF_CODE_PAGE == 0 */
|
|
|