--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbs/cbsserver/ServerSrc/CbsUtils.cpp	Wed Jul 21 18:26:52 2010 +0300
@@ -0,0 +1,211 @@
+/*
+* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:  This module contains the implementation of CbsUtils class 
+*                 member functions.
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <f32file.h>
+#include <barsc.h>
+#include <bautils.h>
+#include <sysutil.h>            // FFS critical level check
+#include "CbsUtils.h"
+#include <hal.h>
+#include <centralrepository.h>
+#include <UiklafInternalCRKeys.h>
+#include <data_caging_path_literals.hrh> 
+#include "CbsLogger.h"
+
+
+// ================= CONSTANTS =======================
+
+const TInt KRamMemoryCriticalLevel = 1500000;   // KRAMLOWTHRESHOLD = 1500000
+
+
+// ================= MEMBER FUNCTIONS =======================
+
+
+// -----------------------------------------------------------------------------
+// CbsUtils::FindAndOpenDefaultResourceFileLC
+// Searches and opens the DLL default resource file.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CbsUtils::FindAndOpenDefaultResourceFileLC(
+    RFs& aFs, 
+    RResourceFile& aResFile )
+    {
+    // default resource file path
+
+	_LIT(KDirAndFile,"z:CbsServer.rsc"); 
+
+	TParse* fp = new(ELeave) TParse(); 
+	fp->Set(KDirAndFile, &KDC_RESOURCE_FILES_DIR, NULL); 
+
+    static const TInt KDefResFileSignature = 4;
+
+    // Find the resource file
+    TFileName fileName( fp->FullName() ); 
+    BaflUtils::NearestLanguageFile( aFs, fileName );
+
+    // Open the resource file
+    aResFile.OpenL( aFs, fileName );
+    // Push close operation in tbe cleanup stack
+    CleanupClosePushL( aResFile );
+
+    aResFile.ConfirmSignatureL( KDefResFileSignature );
+
+	delete fp;
+    }
+
+// -----------------------------------------------------------------------------
+// CbsUtils::FFSCriticalLevelCheckL
+// Checks that there is space for writing data on FFS.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CbsUtils::FFSCriticalLevelCheckL( 
+    const TInt aBytesToWrite, 
+    RFs& aFs )
+    {
+    CBSLOGSTRING("CBSSERVER: >>> CbsUtils::FFSCriticalLevelCheckL()");
+    
+    // Checks RAM memory critical level.
+    if (RamMemCriticalLevelCheckL( aBytesToWrite ))
+        {
+        User::Leave( KErrDiskFull );    // returns KErrDiskFull -> no changes to clients
+        }
+
+    // Checks RAM disk critical level
+    if ( SysUtil::FFSSpaceBelowCriticalLevelL( &aFs, aBytesToWrite ) )
+        {
+        User::Leave( KErrDiskFull );
+        }
+        
+    CBSLOGSTRING("CBSSERVER: <<< CbsUtils::FFSCriticalLevelCheckL()");
+    }
+
+// -----------------------------------------------------------------------------
+// CbsUtils::RamMemCriticalLevelCheckL
+// Checks that there is space for allocating data in memory.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TBool CbsUtils::RamMemCriticalLevelCheckL( 
+    const TInt aBytesToWrite)
+    {
+    
+    // Read the critical threahold RAM memory level from the repository.
+    TInt thresholdVal;
+    CRepository* repository = CRepository::NewLC( KCRUidUiklaf );
+    if (repository->Get( KUikOOMRamLowThreshold, thresholdVal ) != KErrNone)
+        {
+        thresholdVal = KRamMemoryCriticalLevel;
+        }
+    CleanupStack::PopAndDestroy( repository );
+
+    TInt freeMem = 0;
+    HAL::Get(HAL::EMemoryRAMFree, freeMem);
+    if ( freeMem > (thresholdVal + aBytesToWrite) )
+        {
+        return EFalse;
+        }
+  
+    return ETrue;
+    }
+// -----------------------------------------------------------------------------
+// CbsUtils::VolumeCriticalLevelCheckL
+// Leaves with KErrDiskFull if writing aBytesToWrite bytes 
+// to the RAM File System would reduce the free space on RAM 
+// under the critical level.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CbsUtils::VolumeCriticalLevelCheckL( 
+    const TDesC& aFileName, 
+    TInt aBytesToWrite, 
+    const RFs& aFs )
+    {
+    // Convert file name to a volume number
+    TInt volumeNumber;
+    aFs.CharToDrive( aFileName[0], volumeNumber );
+
+    // Find out if the volume has enough free space
+    TVolumeInfo volume;
+    User::LeaveIfError( aFs.Volume( volume, volumeNumber ) );
+    if ( volume.iFree < aBytesToWrite )
+        {
+        User::Leave( KErrDiskFull );
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CbsUtils::ExistsL
+// Returns ETrue, if the file aFile exists.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TBool CbsUtils::ExistsL( 
+    const RFs& aFs, 
+    const TDesC& aFile )
+    {
+    TParse filename;
+    aFs.Parse( aFile, filename );
+
+    TBool returnCode( EFalse );
+	TUint attributes;
+
+    TInt result( aFs.Att( filename.FullName(), attributes ) );
+    if ( result == KErrNone )
+        {
+        returnCode = ETrue;
+        }
+    else if ( result == KErrNotFound ) 
+        {
+        returnCode = EFalse;
+        }
+    else 
+        {
+        User::Leave( result );
+        }
+    return returnCode;  
+    }
+
+// -----------------------------------------------------------------------------
+// CbsUtils::DeleteFileL
+// Deletes the given file.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CbsUtils::DeleteFileL( 
+    RFs& aFs, 
+    const TDesC& aFile )
+    {
+    TInt result( aFs.Delete( aFile ) );
+    if ( result != KErrNone && 
+        result != KErrNotFound && 
+        result != KErrPathNotFound )
+        {
+        User::Leave( result );
+        }
+    }
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// End of File
+
+