diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/userlibandfileserver/fileserver/fs_utils/filesystem_utils.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/userlibandfileserver/fileserver/fs_utils/filesystem_utils.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,118 @@
+// Copyright (c) 1995-2009 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:
+//
+//  Collection of common constants, utility functions, etc. for the file server and file systems.
+//  Definitions here must be filesystem-agnostic, i.e. generic enougs to be used by every file system
+//
+//  This is the internal file and must not be exported.
+
+/**
+    @file
+    @internalTechnology
+*/
+
+#if !defined(__FILESYSTEM_UTILS_H__)
+#define __FILESYSTEM_UTILS_H__
+
+#if !defined(__E32BASE_H__)
+#include <e32base.h>
+#endif
+
+//#######################################################################################################################################
+//#   constants definitions
+//#######################################################################################################################################
+
+const TUint KBitsInByteLog2 = 3;
+const TUint KBitsInByte = 1<<KBitsInByteLog2;
+
+
+const TUint16 K1KiloByteLog2 = 10;
+const TUint32 K1KiloByte = 1<<K1KiloByteLog2; 
+const TUint32 K1MegaByte = 1<<20; 
+
+const TUint32 K1uSec = 1;               ///< 1 misrosecond in TTimeIntervalMicroSeconds32
+const TUint32 K1mSec = 1000;            ///< 1 millisecond in TTimeIntervalMicroSeconds32
+const TUint32 K1Sec  = 1000*K1mSec;     ///< 1 second in TTimeIntervalMicroSeconds32
+
+//---------------------------------------------------------------------------------------------------------------------------------------
+
+const TUint KDefSectorSzLog2=9;                         ///< Log2 of the default sector size for the media 
+const TUint KDefaultSectorSize = 1 << KDefSectorSzLog2; ///< Default sector size for the media, 512 bytes
+
+//#######################################################################################################################################
+//#   some useful utility functions
+//#######################################################################################################################################
+
+inline TUint32 Pow2(TUint32 aVal);          //-- return 2^aVal
+inline TUint32 Pow2_32(TUint32 aVal);       //-- return 2^aVal
+inline TUint64 Pow2_64(TUint32 aVal);       //-- return 2^aVal
+
+inline TBool IsPowerOf2(TUint32 aVal);      //-- return ETrue if aVal is a power of 2 
+inline TBool IsPowerOf2_64(TUint64 aVal);   //-- return ETrue if aVal is a power of 2 
+
+inline TUint32 RoundDown(TUint32 aVal, TUint32 aGranularityLog2);
+inline TUint32 RoundUp(TUint32 aVal, TUint32 aGranularityLog2);
+
+inline TBool BoolXOR(TBool a1, TBool a2);           //-- return Boolean XOR of a1 and a2
+
+inline TUint32 Log2_inline(TUint32 aVal);           //-- Calculates the Log2(aVal)
+TUint32 Log2(TUint32 aVal);                         //-- Calculates the Log2(aVal)
+
+inline TUint32 Count1Bits_inline(TUint32 aVal);     //-- counts number of '1' bits in the aVal
+TUint32 Count1Bits(TUint32 aVal);                   //-- counts number of '1' bits in the aVal
+
+//-----------------------------------------------------------------------------
+
+TPtrC RemoveTrailingDots(const TDesC& aName); //-- Removes trailing dots from aName. "Name..." -> "Name"
+
+
+//#######################################################################################################################################
+/**
+    A class representing a simple abstraction of the 32 bit flags
+*/
+class T32Bits
+{
+ public:
+    T32Bits() : iData(0) {}
+
+    inline void  Clear();
+    inline TBool HasBitsSet() const;
+    inline void SetBit(TUint32 aIndex);
+    inline TBool operator[](TUint32 aIndex) const;
+
+ private:
+    TUint32 iData; ///< 32 bits data
+};
+
+
+
+
+
+
+#include "filesystem_utils.inl"
+
+
+#endif //__FILESYSTEM_UTILS_H__
+
+
+
+
+
+
+
+
+
+
+
+