diff -r 0ff03867bdb6 -r 39b39e1a406e userlibandfileserver/fileserver/sfat32/sl_drv.cpp
--- a/userlibandfileserver/fileserver/sfat32/sl_drv.cpp	Wed Jul 21 14:46:58 2010 +0100
+++ b/userlibandfileserver/fileserver/sfat32/sl_drv.cpp	Thu Jul 22 16:46:39 2010 +0100
@@ -49,6 +49,7 @@
 {	 
 	 if((iMount != NULL) && (iMount->LocalDrive() != NULL))
 		{
+		ASSERT(iMount->LocalDrive()->Mount() == NULL || iMount->LocalDrive()->Mount() == iMount);
 		iMount->LocalDrive()->SetMount(NULL);
 		}
      iMount = NULL;
@@ -117,7 +118,7 @@
     @return KErrBadPower - failure due to low power
 
 */
-TInt TDriveInterface::ReadNonCritical(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset) const
+TInt TDriveInterface::ReadNonCritical(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset, TUint aFlag) const
 {
     //__PRINT2(_L("#=+++ Read_nc2: pos:%LU, len:%u"), aPos, aLength);
 
@@ -126,7 +127,7 @@
 
     for(;;)
     {
-        nRes = iProxyDrive.Read(aPos, aLength, aTrg, aMessage, anOffset);
+        nRes = iProxyDrive.Read(aPos, aLength, aTrg, aMessage, anOffset, aFlag);
         if (nRes==KErrNone)
             break;
 
@@ -200,7 +201,7 @@
     @return KErrCorrupt - an illegal write is detected
     @return KErrAccessDenied - write to protected media
 */
-TInt TDriveInterface::WriteNonCritical(TInt64 aPos, TInt aLength, const TAny* aSrc, const RMessagePtr2 &aMessage, TInt anOffset)
+TInt TDriveInterface::WriteNonCritical(TInt64 aPos, TInt aLength, const TAny* aSrc, const RMessagePtr2 &aMessage, TInt anOffset, TUint aFlag)
 {
     //__PRINT2(_L("#=+++ Write_NC: pos:%LU, len:%u"), aPos, aLength);
 
@@ -211,7 +212,7 @@
     for(;;)
     {
         iMount->OpenMountForWrite(); //-- make a callback to CFatMountCB to perform some actions on 1st write.
-        nRes = iProxyDrive.Write(aPos, aLength, aSrc, aMessage, anOffset);
+        nRes = iProxyDrive.Write(aPos, aLength, aSrc, aMessage, anOffset, aFlag);
         if (nRes==KErrNone)
             break;
 
@@ -542,10 +543,10 @@
 
 //-- see original TDriveInterface methods
 
-TInt TDriveInterface::XProxyDriveWrapper::Read(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset) const
+TInt TDriveInterface::XProxyDriveWrapper::Read(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset, TUint aFlag) const
 {
     EnterCriticalSection();
-    TInt nRes = iLocalDrive->Read(aPos, aLength, aTrg, aMessage.Handle(), anOffset);
+    TInt nRes = iLocalDrive->Read(aPos, aLength, aTrg, aMessage.Handle(), anOffset, aFlag);
     LeaveCriticalSection();
     return nRes;
 }
@@ -558,10 +559,10 @@
     return nRes;
 }
 
-TInt TDriveInterface::XProxyDriveWrapper::Write(TInt64 aPos,TInt aLength,const TAny* aSrc,const RMessagePtr2 &aMessage,TInt anOffset)
+TInt TDriveInterface::XProxyDriveWrapper::Write(TInt64 aPos,TInt aLength,const TAny* aSrc,const RMessagePtr2 &aMessage,TInt anOffset, TUint aFlag)
 {
     EnterCriticalSection();
-    TInt nRes = iLocalDrive->Write(aPos, aLength, aSrc, aMessage.Handle(), anOffset);
+    TInt nRes = iLocalDrive->Write(aPos, aLength, aSrc, aMessage.Handle(), anOffset, aFlag);
     LeaveCriticalSection();
     return nRes;
 }