--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfile/Sf_plugin_util.cpp	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,984 @@
+// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// f32\sfile\sf_plugin_util.cpp
+// 
+//
+
+#include "sf_std.h"
+
+/**
+Utility function to obtain the file name from a file share object
+
+@param	aFileShare		A pointer to the file share
+@param	aName			A reference to the descriptor to contain the file name
+*/
+LOCAL_C void NameFromShare(CFileShare* aFileShare, TDes& aName)
+	{
+	if(aFileShare)
+		{
+		CFileCB& theFile = aFileShare->File();
+		aName = _L("?:");
+		aName[0] = TText('A' + theFile.Drive().DriveNumber());
+		aName.Append(theFile.FileName());
+		}
+	}
+
+/**
+Utility function for obtaining info on file duplicate or adopt requests.
+
+@param	aRequest		File access request
+@param	aDriveNumber	The drive number
+@param	aHandle			sub-session handle
+@param	aAtt			File attributes
+@param	aSize			FileSize
+@param	aName			Name of the file
+@return File modification time in format of TTime
+*/
+LOCAL_C TInt FileDuplicateAdoptVars(CFsRequest* aRequest, TInt& aDriveNumber, TInt& aHandle, TInt& aAtt, TInt& aSize, TDes& aName, TTime& aTime)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileDuplicate || aRequest->Operation()->Function()==EFsFileAdopt,Fault(EBaseRequestMessage));
+
+	aDriveNumber = aRequest->DriveNumber();
+	aHandle = aRequest->Message().Int0();
+
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aName);
+
+	CFileCB& theFile = share->File();
+	aAtt  = theFile.Att();
+	aSize = theFile.Size();
+	aTime = theFile.Modified();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file open requests.  
+
+@param	aRequest	File open request
+@param	aMode		File Open Mode
+@param	aHandle		File handle
+@param	aName		File's name
+*/
+LOCAL_C TInt FileOpenVar(CFsRequest* aRequest, TUint32& aMode, TInt& aHandle, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileOpen,Fault(EBaseRequestMessage));
+	
+	aMode = aRequest->Message().Int1();
+	TPtr8 handle((TUint8*)&aHandle,sizeof(TInt));
+	TRAPD(err,aRequest->ReadL(KMsgPtr3,handle));
+	if(err != KErrNone)
+		{
+ 		handle=0;
+		return(err);
+		}
+
+	aName = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file Create/Replace requests.
+
+@param	aRequest	File Create/Replace request
+@param	aMode		File Create/Replace Mode
+@param	aName		File's name
+*/
+LOCAL_C TInt FileCreateReplaceVar(CFsRequest* aRequest, TUint32& aMode, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileCreate || aRequest->Operation()->Function()==EFsFileReplace,Fault(EBaseRequestMessage));
+	
+	aMode = aRequest->Message().Int1();
+	aName = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file temp requests.  
+
+@param	aRequest	File temp request
+@param	aMode		File Mode
+@param	aName		File's name
+@param  aPath		File's path
+*/
+LOCAL_C TInt FileTempVar(CFsRequest* aRequest, TUint32& aMode, TDes& aName,TDes& aPath)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileTemp,Fault(EBaseRequestMessage));
+	
+	aMode = aRequest->Message().Int1();
+	aPath = aRequest->Src().FullName();
+
+	TInt nameLen = aRequest->GetDesLength(KMsgPtr2);
+	if(nameLen < 0 || nameLen > KMaxFileName)
+		{
+	    return KErrBadName;
+		}
+
+	TRAPD(err, aRequest->ReadL(KMsgPtr2, aName));
+	return(err);
+	}
+
+/**
+Utility function for obtaining info on file read/write requests.  
+
+@param	aRequest	File access request
+@param	aLen		The length of file for access
+@param	aPos		Position of first byte to be accessed
+@param	aName		File name
+@return Client's buffer 
+*/
+LOCAL_C TInt FileAccessVars(CFsRequest* aRequest, TInt& aLen, TInt& aPos, TDes& aName, const TAny*& aPtr)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileRead || aRequest->Operation()->Function()==EFsFileWrite,Fault(EBaseRequestMessage));
+
+	TMsgOperation& currentOperation = ((CFsMessageRequest*) aRequest)->CurrentOperation();
+	aLen = currentOperation.iReadWriteArgs.iLength;
+	aPos = (TInt) currentOperation.iReadWriteArgs.iPos;
+
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	NameFromShare(share, aName);
+	if (aPos == KCurrentPosition64)
+		{
+		aPos = (TInt)share->iPos;
+		}
+	
+	aPtr = (TAny*)aRequest->Message().Ptr0();
+	
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file lock/unlcok requests.  
+
+@param	aRequest	File lock request
+@param	aLen		The length of file 
+@param	aPos		Position of first byte 
+@param	aName		File name
+*/
+LOCAL_C TInt FileLockVars(CFsRequest* aRequest, TInt& aLen, TInt& aPos, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileLock || aRequest->Operation()->Function()==EFsFileUnLock,Fault(EBaseRequestMessage));
+
+	aLen = aRequest->Message().Int0();
+	aPos = aRequest->Message().Int1();
+
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aName);
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file seek requests.  
+
+@param	aRequest	File seek request
+@param	aPos		The position within the file 
+@param	aName		File name
+@return Seek mode in format of TSeek 
+*/
+LOCAL_C TInt FileSeekVars(CFsRequest* aRequest, TInt& aPos, TDes& aName, const TAny*& aPtr)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileSeek,Fault(EBaseRequestMessage));
+	
+	aPos = aRequest->Message().Int0();
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	NameFromShare(share, aName);
+
+	aPtr = aRequest->Message().Ptr1();
+	
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file flush requests.  
+
+@param	aRequest	File flush request
+@param	aName		File name
+*/
+LOCAL_C TInt FileFlushVars(CFsRequest* aRequest, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileFlush,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	NameFromShare(share, aName);
+	
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file size/SetSize requests.  
+
+@param	aRequest	File Size/SetSize request
+@param	aSize		In case of Size() it is client's buffer, otherwise it is the desired size for SetSize
+@param	aName		File name
+*/
+LOCAL_C TInt FileSizeVars(CFsRequest* aRequest,TInt& aSize, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileSize || aRequest->Operation()->Function()==EFsFileSetSize,Fault(EBaseRequestMessage));
+	
+	aSize = aRequest->Message().Int0();
+
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	NameFromShare(share, aName);
+	
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file Att requests.  
+
+@param	aRequest	File Att request
+@param	aAtt		Attribute of the file in question. 
+@param	aName		File name
+*/
+LOCAL_C TInt FileAttVars(CFsRequest* aRequest,TInt& aAtt, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileAtt,Fault(EBaseRequestMessage));
+
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	aAtt = (TInt)share->File().Att();
+	NameFromShare(share, aName);
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file SetAtt requests.  
+
+@param	aRequest		File SetAtt request
+@param	aAtt			Current Attribute of the file 
+@param	aName			File name
+@param	aSetAttMask		The attribute mask to be set
+@param  aClearAttMask	The attribute mask to be cleared
+*/
+LOCAL_C TInt FileSetAttVars(CFsRequest* aRequest,TInt& aAtt, TDes& aName, TUint& aSetAttMask,TUint& aClearAttMask)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileSetAtt,Fault(EBaseRequestMessage));
+
+	CFileShare* share=(CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	aAtt = (TInt)share->File().Att();
+	NameFromShare(share, aName);
+
+	aSetAttMask   = aRequest->Message().Int0(); 
+	aClearAttMask = aRequest->Message().Int1();
+	
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file modification requests.  
+
+@param	aRequest		File Modified/SetModified request
+@param	aAtt			Current Attribute of the file 
+@param	aSize			Current size of the file
+@param	aName			File name
+@param  Moidfied		Last modified time of the file
+@return if request is Modified, returns clients buffer
+		if request is SetModified returns the desired last modification time
+*/
+LOCAL_C TInt FileModificationVars(CFsRequest* aRequest,TInt& aAtt, TInt& aSize, TDes& aName, TTime& aModified, TTime& aOldTime)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileModified || aRequest->Operation()->Function()==EFsFileSetModified,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+	
+	NameFromShare(share, aName);
+	
+	CFileCB& file = share->File();
+	aAtt  = file.Att();
+	aSize = file.Size();
+	aOldTime = file.Modified();
+
+	TPtr8 timePkg((TUint8*)&aModified, sizeof(TTime));
+	TRAPD(err, aRequest->ReadL(KMsgPtr0, timePkg));
+	
+	return(err);
+	}
+
+/**
+Utility function for obtaining info on file Set requests.  
+
+@param	aRequest			File Set request
+@param	aName				File name
+@param	aCurrentAtt			Current Attribute of the file 
+@param	aNewSetAtt			The new attribute to be set
+@param	aNewClearAtt		The attribute to be cleared
+@param  aCurrentModified	Last modified time of the file
+@param  aNewModified		New last modified time of the file
+*/
+LOCAL_C TInt FileSetVars(CFsRequest* aRequest, TDes& aName, TInt& aCurrentAtt,TInt& aNewSetAtt, TInt& aNewClearAtt, TTime& aCurrentModified, TTime& aNewModified)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileSet,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aName);
+
+	CFileCB& file = share->File();
+	aCurrentAtt= file.Att();
+	aCurrentModified = file.Modified();
+
+	aNewSetAtt   = aRequest->Message().Int1();
+	aNewClearAtt = aRequest->Message().Int2();
+
+	TPtr8 timePkg((TUint8*)&aNewModified, sizeof(TTime));
+	TRAPD(err, aRequest->ReadL(KMsgPtr0, timePkg));
+	return(err);
+	}
+
+/**
+Utility function for obtaining info on file ChangeMode requests.  
+
+@param	aRequest			File Set request
+@param	aName				File name
+@param	aCurrentMode		Current mode of the file 
+@param	aNewMode			The new mode of file (switch between EFileShareExclusive and EFileShareReadersOnly
+@param  aModified			Last modified time of the file
+*/
+LOCAL_C TInt FileChangeModeVars(CFsRequest* aRequest, TDes& aName, TInt& aCurrentMode,TInt& aNewMode, TTime& aModified)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileChangeMode,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aName);
+	aCurrentMode = share->iMode & KFileShareMask;
+	aModified = share->File().Modified();
+
+	aNewMode = aRequest->Message().Int0();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file Rename requests.  
+
+@param	aRequest			File Rename request
+@param	aCurrentName		File's current name
+@param	aCurrentDrive		File's current drive
+@param	aNewName			the new name
+@return KErrNone on successful read of info from CFsRequest or a system wide error 
+*/
+LOCAL_C TInt FileRenameVars(CFsRequest* aRequest, TDes& aCurrentName, TDriveUnit& aCurrentDrive, TDes& aNewName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileRename,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aCurrentName);
+	aCurrentDrive = share->File().Mount().Drive().DriveNumber();
+
+	aNewName =	aRequest->Dest().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file Drive/Name requests.  
+
+@param	aRequest			File Rename request
+@param	aFileName			File's current name
+@param	aCurrentDrive		File's current drive
+@param	aDriveInfo			File's drive information
+*/
+LOCAL_C TInt FileDriveNameVars(CFsRequest* aRequest, TDes& aFileName, TDriveUnit& aCurrentDrive,TDriveInfo& aDriveInfo)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileDrive || aRequest->Operation()->Function()==EFsFileName,Fault(EBaseRequestMessage));
+	
+	CFileShare* share = (CFileShare*)aRequest->ScratchValue();
+	if(share == NULL)
+		return(KErrBadHandle);
+
+	NameFromShare(share, aFileName);
+	aCurrentDrive = share->File().Mount().Drive().DriveNumber();
+	share->File().Mount().Drive().DriveInfo(aDriveInfo);
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file delete requests.  
+
+@param	aRequest			Dir read request
+@param	aFileName			The name of the file
+*/
+LOCAL_C TInt FileDelVars(CFsRequest* aRequest, TDes& aFileName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsDelete,Fault(EBaseRequestMessage));
+
+	aFileName = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file rename/replace requests.  
+
+@param	aRequest			File rename/replace request
+@param	aOldFileName		The old name of the file
+@param	aNewFileName		The new name of the file
+*/
+LOCAL_C TInt FileRenameReplaceVars(CFsRequest* aRequest, TDes& aOldFileName,TDes& aNewFileName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsRename || aRequest->Operation()->Function()==EFsReplace,Fault(EBaseRequestMessage));
+
+	aOldFileName = aRequest->Src().FullName();
+	aNewFileName = aRequest->Dest().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file close requests.  
+
+@param	aRequest			File close request
+@param	aPath				The path of the file
+@return	KErrNone
+*/
+LOCAL_C TInt FileCloseVars(CFsRequest* aRequest, TDes& aFileName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsFileSubClose,Fault(EBaseRequestMessage));
+	
+	const TDes* fileName=(TDes*) I64HIGH(aRequest->ScratchValue64());
+	if(fileName == NULL)
+		return(KErrBadName);
+
+	aFileName = _L("?:");
+	aFileName[0] = TText('A' + aRequest->DriveNumber());
+	aFileName.Append(*fileName);
+	
+	return(KErrNone);
+	}
+
+/**
+Dir Operations
+*/
+
+/**
+Utility function for obtaining info on dir Open requests.  
+
+@param	aRequest			Dir Open request
+@param	aDirName			Name of Dir
+@param	aAtt				Attribute
+@param	aUidType			Uid Type
+*/
+LOCAL_C TInt DirOpenVars(CFsRequest* aRequest, TDes& aDirName, TInt& aAtt,TInt& aUidType)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsDirOpen,Fault(EBaseRequestMessage));
+
+	aDirName = aRequest->Src().FullName();
+
+	aAtt = aRequest->Message().Int1();
+	aUidType = aRequest->Message().Int2();
+
+	return(KErrNone);
+	}
+
+
+/**
+Utility function for obtaining info on dir Make requests. 
+
+@param	aRequest			MkDir/MkDirAll request
+@param	aMkDirAll			if MkDirAll it will be 1
+@param	aPath				The path name specifiying the directory or directories to create.
+*/
+LOCAL_C TInt DirMakeVars(CFsRequest* aRequest, TInt& aMkDirAll, TDes& aPath)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsMkDir,Fault(EBaseRequestMessage));
+	
+	aMkDirAll = aRequest->Message().Int1();
+	aPath = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on dir remove requests.
+
+@param	aRequest			RmDir request
+@param	aPath				The path name specifiying the directory to be removed.
+*/
+LOCAL_C TInt DirRemoveVars(CFsRequest* aRequest, TDes& aPath)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsRmDir,Fault(EBaseRequestMessage));
+
+	aPath = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file entry requests.
+
+@param	aRequest	File entry request
+@param	aName		Entry name
+*/
+LOCAL_C TInt FileEntryVars(CFsRequest* aRequest, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsEntry,Fault(EBaseRequestMessage));
+
+	aName = aRequest->Src().FullName();
+
+	return(KErrNone);
+	}
+
+/**
+Utility function for obtaining info on file read file section requests.  
+
+@param	aRequest	Read file section request
+@param	aLen		The length of file for access
+@param	aPos		Position of first byte to be accessed
+@param	aName		File name
+@return KErrNone successful (aLen aPos and aName updated)
+*/
+LOCAL_C TInt FileSectionVars(CFsRequest* aRequest, TInt& aLen, TInt& aPos, TDes& aName)
+	{
+	__ASSERT_ALWAYS(aRequest->Operation()->Function()==EFsReadFileSection,Fault(EBaseRequestMessage));
+	
+	aPos = aRequest->Message().Int2();
+	aLen = aRequest->Message().Int3();
+	
+	aName = aRequest->Src().FullName();
+	
+	return(KErrNone);
+	}
+
+/**
+@internalTechnology
+
+Utility function for obtaining the name of the file/dir from the client request 
+Supported requests are:
+
+	EFsFileDuplicate
+	EFsFileAdopt
+	EFsFileOpen
+	EFsFileCreate
+	EFsFileReplace
+	EFsFileTemp
+	EFsFileRead
+	EFsFileWrite
+	EFsFileLock
+	EFsFileUnLock	
+	EFsFileSeek
+	EFsFileFlush
+	EFsFileSize
+	EFsFileSetSize
+	EFsFileAtt
+	EFsFileSetAtt
+	EFsFileModified
+	EFsFileSetModified
+	EFsFileSet
+	EFsFileChangeMode
+	EFsFileRename
+	EFsFileDrive
+	EFsFileName
+	EFsDelete
+	EFsRename
+	EFsReplace
+	EFsDirOpen
+	EFsFileSubClose
+	EFsEntry
+	EFsReadFileSection
+	EFsFileWriteDirty
+	
+@param	aRequest	The client request
+@param	aName		Name of the file/folder
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetName(TFsPluginRequest* aRequest, TDes& aName)
+	{
+	TInt driveNumber;
+	TInt handle;
+	TInt att;
+	TInt size;
+	TUint32 mode;
+	TPath path;
+	TFileName newName;
+	TInt pos;
+	TInt len;
+	TUint attMask;
+	TTime modified;
+	TInt fmode;
+	TDriveUnit drive;
+	TDriveInfo info;
+	TInt uidType;
+	const TAny* ptr;
+	TInt err = KErrNone;
+	switch(aRequest->Function())
+		{
+		case EFsFileDuplicate:
+		case EFsFileAdopt:
+			err = FileDuplicateAdoptVars(aRequest->Request(), driveNumber, handle, att, size, aName, modified);
+			break;
+		case EFsFileOpen: 
+			err = FileOpenVar(aRequest->Request(), mode, handle, aName);
+			break;
+		case EFsFileCreate:
+		case EFsFileReplace:
+			err = FileCreateReplaceVar(aRequest->Request(), mode, aName);
+			break;
+		case EFsFileTemp: 
+			err = FileTempVar(aRequest->Request(), mode, aName, path);
+			break;
+		case EFsFileRead:
+		case EFsFileWrite:
+			err = FileAccessVars(aRequest->Request(), len, pos, aName, ptr);
+			break;
+		case EFsFileLock:
+		case EFsFileUnLock:	
+			err = FileLockVars(aRequest->Request(), len, pos, aName);
+			break;
+		case EFsFileSeek:
+			err = FileSeekVars(aRequest->Request(),  pos, aName, ptr);
+			break;
+		case EFsFileFlush: 
+			err = FileFlushVars(aRequest->Request(), aName);
+			break;
+		case EFsFileSize:
+		case EFsFileSetSize:
+			err = FileSizeVars(aRequest->Request(),size, aName);
+			break;
+		case EFsFileAtt:
+			err = FileAttVars(aRequest->Request(),att, aName);
+			break;
+		case EFsFileSetAtt:
+			err = FileSetAttVars(aRequest->Request(),att, aName, attMask, attMask);
+			break;
+		case EFsFileModified:
+		case EFsFileSetModified:
+			err = FileModificationVars(aRequest->Request(),att, size, aName, modified, modified);
+			break;
+		case EFsFileSet:
+			err = FileSetVars(aRequest->Request(), aName, att,att, att, modified, modified);
+			break;
+		case EFsFileChangeMode:
+			err = FileChangeModeVars(aRequest->Request(), aName, fmode,fmode, modified);
+			break;
+		case EFsFileRename:
+			err = FileRenameVars(aRequest->Request(), aName, drive, (TDes&)newName);
+			break;
+		case EFsFileDrive:
+		case EFsFileName:
+			err = FileDriveNameVars(aRequest->Request(), aName, drive, info);
+			break;
+		case EFsDelete:
+			err = FileDelVars(aRequest->Request(), aName);
+			break;
+		case EFsRename:
+		case EFsReplace:
+			err = FileRenameReplaceVars(aRequest->Request(), aName, (TDes&)newName);
+			break;
+		case EFsDirOpen:
+			err = DirOpenVars(aRequest->Request(), aName, att,uidType);
+			break;
+		case EFsFileSubClose:
+			err = FileCloseVars(aRequest->Request(), aName);
+			break;
+		case EFsEntry:
+			err = FileEntryVars(aRequest->Request(), aName);
+			break;
+		case EFsReadFileSection:
+			err = FileSectionVars(aRequest->Request(), len, pos, (TDes&)aName);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+
+	return(err);
+	}
+
+/**
+@internalTechnology
+
+Utility function for obtaining the proposed new name of the file/dir from the client rename/replace request 
+Supported requests are: 
+
+	EFsFileRename
+	EFsRename
+	EFsReplace
+	
+@param	aRequest	The client request
+@param	aName		New name of the file/folder
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetNewName(TFsPluginRequest* aRequest, TDes& aNewName)
+	{
+	TFileName name;
+	TDriveUnit drive;
+	TInt err = KErrNone;
+
+	switch(aRequest->Function())
+		{
+		case EFsFileRename:
+			err = FileRenameVars(aRequest->Request(), (TDes&)name, drive, aNewName);
+			break;
+		case EFsRename:
+		case EFsReplace:
+			err = FileRenameReplaceVars(aRequest->Request(), name, aNewName);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+
+	return(err);
+	}
+
+
+/**
+@internalTechnology
+
+Utility function for obtaining the path from the client request 
+Supported requests currently are: 
+	
+	EFsFileTemp
+	EFsMkDir
+	EFsRmDir
+
+@param	aRequest	The client request
+@param	aPath		The path
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetPath(TFsPluginRequest* aRequest, TDes& aPath)
+	{
+	TFileName name;
+	TUint32 mode;
+	TInt fmode;
+	TInt err = KErrNone;
+
+	switch(aRequest->Function())
+		{
+		case EFsFileTemp: 
+			err = FileTempVar(aRequest->Request(), mode, (TDes&)name, aPath);
+			break;
+		case EFsMkDir: 
+			err = DirMakeVars(aRequest->Request(), fmode, aPath);
+			break;
+		case EFsRmDir:
+			err = DirRemoveVars(aRequest->Request(), aPath);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+
+	return(err);
+	}
+
+/**
+@internalTechnology
+
+Utility function for obtaining the attribute of the file/folder from the client request 
+Supported requests currently are: 
+	
+	EFsFileDuplicate
+	EFsFileAdopt
+	EFsFileAtt
+	EFsFileSetAtt
+	EFsFileModified
+	EFsFileSetModified
+	EFsFileSet
+	EFsDirOpen
+
+@param	aRequest	The client request
+@param	aAtt		The attribute
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetAtt(TFsPluginRequest* aRequest, TInt& aAtt)
+	{
+	TInt size;
+	TFileName name;
+	TInt handle;
+	TInt driveNumber;
+	TUint attMask;
+	TTime modified;
+	TInt att;
+	TInt uidType;
+	TInt err = KErrNone;
+
+	switch(aRequest->Function())
+		{
+		case EFsFileDuplicate:
+		case EFsFileAdopt:
+			err = FileDuplicateAdoptVars(aRequest->Request(), driveNumber, handle, aAtt, size,(TDes&)name, modified);
+			break;
+		case EFsFileAtt:
+			err = FileAttVars(aRequest->Request(),aAtt, (TDes&)name);
+			break;
+		case EFsFileSetAtt:
+			err = FileSetAttVars(aRequest->Request(),aAtt, (TDes&)name, attMask, attMask);
+			break;
+		case EFsFileModified:
+		case EFsFileSetModified:
+			err = FileModificationVars(aRequest->Request(),aAtt, size,(TDes&)name, modified, modified);
+			break;
+		case EFsFileSet:
+			err = FileSetVars(aRequest->Request(), (TDes&)name, aAtt, att, att, modified, modified);
+			break;
+		case EFsDirOpen:
+			err = DirOpenVars(aRequest->Request(), (TDes&)name, aAtt, uidType);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+
+	return(err);
+	}
+
+
+/**
+@internalTechnology
+
+Utility function for obtaining the last modified time of a file from the client request 
+Supported requests currently are: 
+	
+	EFsFileDuplicate
+	EFsFileAdopt
+	EFsFileModified
+	EFsFileSetModified
+	EFsFileSet
+	EFsFileChangeMode
+
+@param	aRequest	The client request
+@param	aModified	The last modified time
+@param	aCurrent	If true it returns the current last modified time, otherwise it will return 
+					the requested last modified time 
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetModifiedTime(TFsPluginRequest* aRequest, TTime*& aModified, TBool aCurrent)
+	{
+	TFileName name;
+	TInt handle;
+	TInt att;
+	TInt size;
+	TInt driveNumber;
+	TTime modified;
+	TInt fmode;
+	
+	TTime& _aModified = aModified ? *aModified : modified;
+
+	TInt err = KErrNone;
+
+	switch(aRequest->Function())
+		{
+		case EFsFileDuplicate:
+		case EFsFileAdopt:
+			err = FileDuplicateAdoptVars(aRequest->Request(), driveNumber, handle, att, size, (TDes&)name, _aModified);
+			break;
+		case EFsFileModified:
+			err = FileModificationVars(aRequest->Request(), att, size, (TDes&)name, _aModified, modified);
+			break;
+		case EFsFileSetModified:
+			if(aCurrent)
+				err = FileModificationVars(aRequest->Request(), att, size, (TDes&)name, _aModified, modified);
+			else
+				err = FileModificationVars(aRequest->Request(), att, size, (TDes&)name, modified, _aModified);
+			break;
+		case EFsFileSet:
+			if(aCurrent)
+				err = FileSetVars(aRequest->Request(), (TDes&)name, att, att, att, _aModified, modified);
+			else
+				err = FileSetVars(aRequest->Request(), (TDes&)name, att, att, att, modified, _aModified);
+			break;
+		case EFsFileChangeMode:
+			err = FileChangeModeVars(aRequest->Request(), (TDes&)name, fmode, fmode, _aModified);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+
+	return(err);
+	}
+
+/**
+@internalTechnology
+
+Utility function for obtaining the file access  information from the client request 
+Supported requests currently are: 
+	
+	EFsFileRead
+	EFsFileWrite
+	EFsFileLock
+	EFsFileUnLock
+	EFsFileSeek
+	EFsReadFileSection
+
+@param	aRequest	The client request
+@param	aLength		Length of access
+@param	aPos		Position of access 
+@return KErrNone on successful completion, KErrNotSupported if the request is not supported 
+*/
+EXPORT_C TInt GetFileAccessInfo(TFsPluginRequest* aRequest, TInt& aLength, TInt& aPos)
+	{
+	TFileName name;
+	const TAny* ptr;
+	TInt err = KErrNone;
+
+	switch(aRequest->Function())
+		{
+	
+		case EFsFileRead:
+		case EFsFileWrite:
+			err = FileAccessVars(aRequest->Request(), aLength, aPos, (TDes&)name, ptr);
+			break;
+		case EFsFileLock:
+		case EFsFileUnLock:	
+			err = FileLockVars(aRequest->Request(), aLength, aPos, (TDes&)name);
+			break;
+		case EFsFileSeek:			
+			err = FileSeekVars(aRequest->Request(),  aPos, (TDes&)name, ptr);
+			aLength=0;
+			break;
+		case EFsReadFileSection:
+			err = FileSectionVars(aRequest->Request(), aLength, aPos, (TDes&)name);
+			break;
+		default:
+			err = KErrNotSupported;
+		}
+	
+	return(err);
+	}