Symaptic: os/kernelhwsrv/userlibandfileserver/fileserver/smassstorage/inc/tfatbootsector.inl@bde4ae8d615e

     1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // Inline methods of TFatBootSector class.

    15 //

    16 //

    18 /**

    19  @file

    20  @internalTechnology

    22  Returns Sectors in Fat table for 32 bit volume

    24  @return iFatSectors32

    25 */

    26 inline TUint32 TFatBootSector::FatSectors32() const

    27 	{return iFatSectors32;}

    28 /**

    29 Fat flags

    31 @return iFATFlags

    32 */

    33 inline TUint16 TFatBootSector::FATFlags() const

    34 	{return iFATFlags;}

    35 /**

    36 Version number of the file system

    38 @return iVersionNumber

    39 */

    40 inline TUint16 TFatBootSector::VersionNumber() const

    41 	{return iVersionNumber;}

    42 /**

    43 Cluster number of the root directory

    45 @return iRootClusterNum

    46 */

    47 inline TUint32 TFatBootSector::RootClusterNum() const

    48 	{return iRootClusterNum;}

    49 /**

    50 Sector number containing the FSIInfo structure

    52 @return iFSInfoSectorNum

    53 */

    54 inline TUint16 TFatBootSector::FSInfoSectorNum() const

    55 	{return iFSInfoSectorNum;}

    56 /**

    57 Backup boot sector

    59 @return iBkBootRecSector

    60 */

    61 inline TUint16 TFatBootSector::BkBootRecSector() const

    62 	{return iBkBootRecSector;}

    63 /**

    64 Sets the number of sectors in Fat table for 32 bit volume

    66 @param aFatSectors32

    67 */

    68 inline void TFatBootSector::SetFatSectors32(TUint32	aFatSectors32)

    69 	{iFatSectors32 = aFatSectors32;}

    70 /**

    71 Sets the Fat flags

    73 @param aFATFlags

    74 */

    75 inline void TFatBootSector::SetFATFlags(TUint16 aFATFlags)

    76 	{iFATFlags = aFATFlags;}

    77 /**

    78 Sets the version number of the file system

    80 @param aVersionNumber

    81 */

    82 inline void TFatBootSector::SetVersionNumber(TUint16 aVersionNumber)

    83 	{iVersionNumber = aVersionNumber;}

    84 /**

    85 Sets the cluster number of the root directory

    87 @param aRootClusterNum

    88 */

    89 inline void TFatBootSector::SetRootClusterNum(TUint32 aRootClusterNum)

    90 	{iRootClusterNum = aRootClusterNum;}

    91 /**

    92 Set the sector number containing the FSIInfo structure

    94 @param aFSInfoSectorNum

    95 */

    96 inline void TFatBootSector::SetFSInfoSectorNum(TUint16 aFSInfoSectorNum)

    97 	{iFSInfoSectorNum = aFSInfoSectorNum;}

    98 /**

    99 Set the backup boot sector

   101 @param aBkBootRecSector

   102 */

   103 inline void TFatBootSector::SetBkBootRecSector(TUint16 aBkBootRecSector)

   104 	{iBkBootRecSector = aBkBootRecSector;}

   105 /**

   106 Quick test as to whether the volume is Fat32

   108 @return True for Fat32

   109 */

   110 inline TBool TFatBootSector::Is32BitFat()

   111 	{return(iRootDirEntries==0);}

   112 /**

   113 Returns the vendor ID of the file system that formatted the volume

   115 @return A descriptor containing the vendor ID

   116 */

   117 inline const TPtrC8 TFatBootSector::VendorId() const

   118 	{return TPtrC8(iVendorId,KVendorIdSize);}

   119 /**

   120 Return the bytes per sector

   122 @return iBytesPerSector

   123 */

   124 inline TUint16 TFatBootSector::BytesPerSector() const

   125 	{return iBytesPerSector;}

   126 /**

   127 Returns the sectors per cluster ratio

   129 @return iSectorsPerCluster

   130 */

   131 inline TInt TFatBootSector::SectorsPerCluster() const

   132 	{return iSectorsPerCluster;}

   133 /**

   134 Returns the number of reserved sectors on the volume

   136 @return iReservedSectors

   137 */

   138 inline TInt TFatBootSector::ReservedSectors() const

   139 	{return iReservedSectors;}

   140 /**

   141 Returns the number of Fats on the volume

   143 @return iNumberOfFats

   144 */

   145 inline TInt TFatBootSector::NumberOfFats() const

   146 	{return iNumberOfFats;}

   147 /**

   148 Returns the number of entries allowed in the root directory, specific to Fat12/16, zero for FAT32

   150 @return iRootDirEntries

   151 */

   152 inline TInt TFatBootSector::RootDirEntries() const

   153 	{return iRootDirEntries;}

   154 /**

   155 Returns the total sectors on the volume, zero for FAT32

   157 @return iTotalSectors

   158 */

   159 inline TInt TFatBootSector::TotalSectors() const

   160 	{return iTotalSectors;}

   161 /**

   162 Returns the media descriptor

   164 @return iMediaDescriptor

   165 */

   166 inline TUint8 TFatBootSector::MediaDescriptor() const

   167 	{return iMediaDescriptor;}

   168 /**

   169 Returns sectors used for the Fat table, zero for FAT32

   171 @return iFatSectors

   172 */

   173 inline TInt TFatBootSector::FatSectors() const

   174 	{return iFatSectors;}

   175 /**

   176 Returns sectors per track

   178 @return iSectorsPerTrack

   179 */

   180 inline TInt TFatBootSector::SectorsPerTrack() const

   181 	{return iSectorsPerTrack;}

   182 /**

   183 Returns the number of heads

   185 @return iNumberOfHeads

   186 */

   187 inline TInt TFatBootSector::NumberOfHeads() const

   188 	{return iNumberOfHeads;}

   189 /**

   190 Returns the number of hidden sectors in the volume

   192 @return iHiddenSectors

   193 */

   194 inline TInt TFatBootSector::HiddenSectors() const

   195 	{return iHiddenSectors;}

   196 /**

   197 Returns total sectors in the volume, Used if totalSectors > 65535

   199 @return iHugeSectors

   200 */

   201 inline TInt TFatBootSector::HugeSectors() const

   202 	{return iHugeSectors;}

   203 /**

   204 Returns the physical drive number, not used in Symbian OS

   206 @return iPhysicalDriveNumber

   207 */

   208 inline TInt TFatBootSector::PhysicalDriveNumber() const

   209 	{return iPhysicalDriveNumber;}

   210 /**

   211 Returns the extended boot signiture

   213 @return iExtendedBootSignature

   214 */

   215 inline TInt TFatBootSector::ExtendedBootSignature() const

   216 	{return iExtendedBootSignature;}

   217 /**

   218 Returns the unique volume ID

   220 @return iUniqueID

   221 */

   222 inline TUint32 TFatBootSector::UniqueID() const

   223 	{return iUniqueID;}

   224 /**

   225 Returns the volume's label

   227 @return A descriptor containing the volume label

   228 */

   229 inline const TPtrC8 TFatBootSector::VolumeLabel() const

   230 	{return TPtrC8(iVolumeLabel,KVolumeLabelSize);}

   231 /**

   232 Returns the file system type

   234 @return A descriptor containing the file system type

   235 */

   236 inline const TPtrC8 TFatBootSector::FileSysType() const

   237 	{return TPtrC8(iFileSysType,KFileSysTypeSize);}

   238 /**

   239 Returns the boot sector signiture

   241 @return KBootSectorSignature

   242 */

   243 inline TInt TFatBootSector::BootSectorSignature() const

   244 	{return KBootSectorSignature;}

   245 /**

   246 Set the jump instruction

   247 */

   248 inline void TFatBootSector::SetJumpInstruction()

   249 	{iJumpInstruction[0]=0xE9;iJumpInstruction[2]=0x90;}

   250 /**

   251 Set the vendor ID of the file system that formatted the volume

   253 @param aDes Descriptor containing the Vendor ID

   254 */

   255 inline void TFatBootSector::SetVendorID(const TDesC8& aDes)

   256 	{

   257 	__ASSERT_DEBUG(aDes.Length()<=KVendorIdSize,User::Panic(_L("FATFILESYS"),1));

   258 	TPtr8 buf(iVendorId,KVendorIdSize);

   259 	buf=aDes;

   260 	}

   261 /**

   262 Sets the bytes per sector

   264 @param aBytesPerSector Number of bytes per sector

   265 */

   266 inline void TFatBootSector::SetBytesPerSector(TInt aBytesPerSector)

   267 	{

   268 	__ASSERT_DEBUG(!(aBytesPerSector&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   269 	iBytesPerSector=(TUint16)aBytesPerSector;

   270 	}

   271 /**

   272 Set the sectors per cluster ratio

   274 @param aSectorsPerCluster Number of sectors per cluster

   275 */

   276 inline void TFatBootSector::SetSectorsPerCluster(TInt aSectorsPerCluster)

   277 	{

   278 	__ASSERT_DEBUG(!(aSectorsPerCluster&~KMaxTUint8),User::Panic(_L("FATFILESYS"),1));

   279 	iSectorsPerCluster=(TUint8)aSectorsPerCluster;

   280 	}

   281 /**

   282 Sets the number of reserved sectors on the volume

   284 @param aReservedSectors Number of reserved sectors

   285 */

   286 inline void TFatBootSector::SetReservedSectors(TInt aReservedSectors)

   287 	{

   288 	__ASSERT_DEBUG(!(aReservedSectors&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   289 	iReservedSectors=(TUint16)aReservedSectors;

   290 	}

   291 /**

   292 Sets the number of Fats on the volume

   294 @param aNumberOfFats Number of fats

   295 */

   296 inline void TFatBootSector::SetNumberOfFats(TInt aNumberOfFats)

   297 	{

   298 	__ASSERT_DEBUG(!(aNumberOfFats&~KMaxTUint8),User::Panic(_L("FATFILESYS"),1));

   299 	iNumberOfFats=(TUint8)aNumberOfFats;

   300 	}

   301 /**

   302 Number of entries allowed in the root directory, specific to Fat12/16, zero for FAT32

   304 @param aRootDirEntries

   305 */

   306 inline void TFatBootSector::SetRootDirEntries(TInt aRootDirEntries)

   307 	{

   308 	__ASSERT_DEBUG(!(aRootDirEntries&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   309 	iRootDirEntries=(TUint16)aRootDirEntries;

   310 	}

   311 /**

   312 Total sectors on the volume, zero for FAT32

   314 @param aTotalSectors Total number of sectors

   315 */

   316 inline void TFatBootSector::SetTotalSectors(TInt aTotalSectors)

   317 	{

   318 	__ASSERT_DEBUG(!(aTotalSectors&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   319 	iTotalSectors=(TUint16)aTotalSectors;

   320 	}

   321 /**

   322 Set the media descriptor

   324 @param aMediaDescriptor

   325 */

   326 inline void TFatBootSector::SetMediaDescriptor(TUint8 aMediaDescriptor)

   327 	{iMediaDescriptor=aMediaDescriptor;}

   328 /**

   329 Sectors used for the Fat table, zero for FAT32

   331 @param aFatSectors Number of Fat sectors

   332 */

   333 inline void TFatBootSector::SetFatSectors(TInt aFatSectors)

   334 	{

   335 	__ASSERT_DEBUG(!(aFatSectors&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   336 	iFatSectors=(TUint16)aFatSectors;

   337 	}

   338 /**

   339 Set the sectors per track

   341 @param aSectorsPerTrack Number of sectors per track

   342 */

   343 inline void TFatBootSector::SetSectorsPerTrack(TInt aSectorsPerTrack)

   344 	{

   345 	__ASSERT_DEBUG(!(aSectorsPerTrack&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   346 	iSectorsPerTrack=(TUint16)aSectorsPerTrack;

   347 	}

   348 /**

   349 Set the number of heads

   351 @param aNumberOfHeads Number of heads

   352 */

   353 inline void TFatBootSector::SetNumberOfHeads(TInt aNumberOfHeads)

   354 	{

   355 	__ASSERT_DEBUG(!(aNumberOfHeads&~KMaxTUint16),User::Panic(_L("FATFILESYS"),1));

   356 	iNumberOfHeads=(TUint16)aNumberOfHeads;

   357 	}

   358 /**

   359 Set the number of hidden sectors in the volume

   361 @param aHiddenSectors Number of hidden sectors

   362 */

   363 inline void TFatBootSector::SetHiddenSectors(TUint32 aHiddenSectors)

   364 	{

   365 	iHiddenSectors=(TUint32)(aHiddenSectors);

   366 	}

   367 /**

   368 Set the total sectors in the volume, Used if totalSectors > 65535

   370 @param aHugeSectors

   371 */

   372 inline void TFatBootSector::SetHugeSectors(TUint32 aHugeSectors)

   373 	{iHugeSectors=aHugeSectors;}

   374 /**

   375 Physical drive number, not used in Symbian OS

   377 @param aPhysicalDriveNumber Physical drive number

   378 */

   379 inline void TFatBootSector::SetPhysicalDriveNumber(TInt aPhysicalDriveNumber)

   380 	{

   381 	__ASSERT_DEBUG(!(aPhysicalDriveNumber&~KMaxTUint8),User::Panic(_L("FATFILESYS"),1));

   382 	iPhysicalDriveNumber=(TUint8)aPhysicalDriveNumber;

   383 	}

   384 /**

   385 Set the reserved byte value

   387 @param aReservedByte Value for reserved byte

   388 */

   389 inline void TFatBootSector::SetReservedByte(TUint8 aReservedByte)

   390 	{iReserved=aReservedByte;}

   391 /**

   392 Set the extended boot signiture

   394 @param anExtendedBootSignature The extended boot signiture

   395 */

   396 inline void TFatBootSector::SetExtendedBootSignature(TInt anExtendedBootSignature)

   397 	{

   398 	__ASSERT_DEBUG(!(anExtendedBootSignature&~KMaxTUint8),User::Panic(_L("FATFILESYS"),1));

   399 	iExtendedBootSignature=(TUint8)anExtendedBootSignature;

   400 	}

   401 /**

   402 Set the unique volume ID

   404 @param anUniqueID Set the unique ID

   405 */

   406 inline void TFatBootSector::SetUniqueID(TUint32 anUniqueID)

   407 	{iUniqueID=anUniqueID;}

   408 /**

   409 Set the volume's label

   411 @param aDes A descriptor containg the volume label

   412 */

   413 inline void TFatBootSector::SetVolumeLabel(const TDesC8& aDes)

   414 	{

   415 	__ASSERT_DEBUG(aDes.Length()<=KVolumeLabelSize,User::Panic(_L("FATFILESYS"),1));

   416 	TPtr8 buf(iVolumeLabel,KVolumeLabelSize);

   417 	buf=aDes;

   418 	}

   419 /**

   420 Set the file system type

   422 @param aDes A descriptor containing the file system type

   423 */

   424 inline void TFatBootSector::SetFileSysType(const TDesC8& aDes)

   425 	{

   426 	__ASSERT_DEBUG(aDes.Length()<=8,User::Panic(_L("FATFILESYS"),1));

   427 	TPtr8 buf(iFileSysType,8);

   428 	buf=aDes;

   429 	}

   430 /**

   431 Tests if the volume is Fat 16 or not

   433 @return True if the volume is Fat16

   434 */

   435 inline TBool TFatBootSector::Is16BitFat()

   436 	{return(FileSysType()==_L8("FAT16   "));}

   437 /**

   438 Returns the position of the first sector of the first Fat

   440 @return The first Fat sector's byte position

   441 */

   442 inline TInt TFatBootSector::FirstFatSectorPos()

   443 	{return(ReservedSectors()*BytesPerSector());}

   444 /**

   445 Returns the start sector number of the root directory

   447 @return Start sector number of the root directory

   448 */

   449 inline TInt TFatBootSector::RootDirStartSector()

   450 	{return(ReservedSectors()+FatSectors()*NumberOfFats());}

   451 /**

   452 Returns the sector number of the first sector after the root directory

   454 @return

   455 */

   456 inline TInt TFatBootSector::FirstFreeSector()

   457 	{return(RootDirStartSector()+(RootDirEntries()*KSizeOfFatDirEntry+BytesPerSector()-1)/BytesPerSector());}

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--