1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 #ifndef __FAT_DEFINES_HEADER__

    18 #define __FAT_DEFINES_HEADER__

    19 #include <e32std.h>

    20 struct TFATBootSector {

    21 	TUint8 BS_jmpBoot[3];

    22 	TUint8 BS_OEMName[8];

    23 	TUint8 BPB_BytsPerSec[2];

    24 	TUint8 BPB_SecPerClus;

    25 	TUint8 BPB_RsvdSecCnt[2];

    26 	TUint8 BPB_NumFATs;

    27 	TUint8 BPB_RootEntCnt[2];

    28 	TUint8 BPB_TotSec16[2];

    29 	TUint8 BPB_Media;

    30 	TUint8 BPB_FATSz16[2];

    31 	TUint8 BPB_SecPerTrk[2];

    32 	TUint8 BPB_NumHeads[2];

    33 	TUint8 BPB_HiddSec[4];

    34 	TUint8 BPB_TotSec32[4];	

    35 };

    36 struct TFAT32BSExt {

    37 	TUint8 BPB_FATSz32[4];

    38 	TUint8 BPB_ExtFlags[2];

    39 	TUint8 BPB_FSVer[2];

    40 	TUint8 BPB_RootClus[4];

    41 	TUint8 BPB_FSInfo[2];

    42 	TUint8 BPB_BkBootSec[2];

    43 	TUint8 BPB_Reserved[12];

    44 };

    45 

    46 struct TFATHeader {

    47 	TUint8 BS_DrvNum ;

    48 	TUint8 BS_Reserved1;

    49 	TUint8 BS_BootSig;

    50 	TUint8 BS_VolID[4];

    51 	TUint8 BS_VolLab[11];

    52 	TUint8 BS_FilSysType[8];

    53 };

    54 

    55 struct TFAT32FSInfoSector {

    56 	TUint8 FSI_LeadSig[4];

    57 	TUint8 FSI_Reserved1[480];

    58 	TUint8 FSI_StrucSig[4];

    59 	TUint8 FSI_Free_Count[4];

    60 	TUint8 FSI_Nxt_Free[4];

    61 	TUint8 FSI_Reserved2[12];

    62 	TUint8 FSI_TrailSig[4];

    63 };

    64 struct TShortDirEntry {

    65     TUint8 DIR_Name[11];

    66     TUint8 DIR_Attr ;

    67     TUint8 DIR_NTRes ;

    68     TUint8 DIR_CrtTimeTenth ;

    69     TUint8 DIR_CrtTime[2] ;

    70     TUint8 DIR_CrtDate[2] ;

    71     TUint8 DIR_LstAccDate[2] ;

    72     TUint8 DIR_FstClusHI[2] ;

    73     TUint8 DIR_WrtTime[2] ;

    74     TUint8 DIR_WrtDate[2];

    75     TUint8 DIR_FstClusLO[2];

    76     TUint8 DIR_FileSize[4] ;    

    77 };

    78 

    79 struct TLongDirEntry {

    80     TUint8 LDIR_Ord ;

    81     TUint8 LDIR_Name1[10] ;

    82     TUint8 LDIR_Attr ;

    83     TUint8 LDIR_Type ;

    84     TUint8 LDIR_Chksum ;

    85     TUint8 LDIR_Name2[12] ;

    86     TUint8 LDIR_FstClusLO[2] ; 

    87     TUint8 LDIR_Name3[4] ;

    88 };

    89 const TUint8 ATTR_READ_ONLY = 0x01 ;

    90 const TUint8 ATTR_HIDDEN = 0x02;

    91 const TUint8 ATTR_SYSTEM = 0x04;

    92 const TUint8 ATTR_VOLUME_ID = 0x08;

    93 const TUint8 ATTR_DIRECTORY = 0x10;

    94 const TUint8 ATTR_ARCHIVE = 0x20;

    95 const TUint8 ATTR_LONG_NAME = ATTR_READ_ONLY | ATTR_HIDDEN | ATTR_SYSTEM | ATTR_VOLUME_ID;

    96 

    97 //Time format, should be written as a integer in FAT image

    98 struct FatTime

    99 {

   100 	TUint16 Seconds:5;

   101 	TUint16 Minute:6;

   102 	TUint16 Hour:5;

   103 };

   104 

   105 //Date format, should be written as a integer in FAT image

   106 struct FatDate

   107 {

   108 	TUint16 Day:5;

   109 	TUint16 Month:4;

   110 	TUint16 Year:7;

   111 };

   112 

   113 //This union convention used to convert bit fields into integer

   114 union TDateInteger

   115 {

   116 	FatDate iCurrentDate;

   117 	TUint16 iImageDate;

   118 };

   119 

   120 //This union convention used to convert bit fields into integer

   121 union TTimeInteger

   122 {	

   123 	FatTime iCurrentTime;

   124 	TUint16 iImageTime;

   125 };

   126 struct ConfigurableFatAttributes

   127 {

   128     char iDriveVolumeLabel[12];

   129     TInt64 iImageSize ;

   130     TUint16 iDriveSectorSize;

   131     TUint8 iSectorPerCluster ;

   132     TUint8 iDriveNoOfFATs;    

   133     ConfigurableFatAttributes():iImageSize(0),iDriveSectorSize(512),iSectorPerCluster(0),iDriveNoOfFATs(2){

   134         memcpy(iDriveVolumeLabel,"NO NAME    \0",12);

   135     }

   136 };

   137 #endif