userlibandfileserver/fileserver/sfsrv/cl_dir.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 15:02:23 +0300
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Revision: 201023 Kit: 2010123
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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// f32\sfsrv\cl_dir.cpp
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//
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//
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#include "cl_std.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "cl_dirTraces.h"
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#endif
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EFSRV_EXPORT_C TInt RDir::Open(RFs& aFs,const TDesC& aName,const TUidType& aUidType)
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/**
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Opens a directory using the specified UID type to filter the
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directory entry types that will subsequently be read.
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This function, or its overload, must be called before reading the entries in
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the directory.
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Note: to close the directory, use Close()
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@param aFs       The file server session.
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@param aName     Name of the directory to be opened. Any path components that
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                 are not specified here are taken from the session path.
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                 Note that the wildcard characters ? and *  can  be used.
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                 As with all directory paths aName must be terminated with '\',
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                 Please refer to "Structure of paths and filenames" section in the
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                 Symbian OS Library.
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@param aUidType  UID type used by the Read() functions to filter the
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                 entry types required. Only those entries with the UID type
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                 specified here will be read.
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@return KErrNone, if successful, otherwise one of the other system-wide error
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        codes.
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@capability AllFiles
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*/
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	{
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	OstTraceExt4(TRACE_BORDER, EFSRV_EDIROPEN1, "sess %x aUidType0 %x aUidType1 %x aUidType2 %x", (TUint) Session().Handle(), (TUint) aUidType[0].iUid, (TUint) aUidType[1].iUid, (TUint) aUidType[2].iUid);
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	OstTraceData(TRACE_BORDER, EFSRV_EDIROPEN1_EDIRNAME, "Dir %S", aName.Ptr(), aName.Length()<<1);
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	TPckgC<TUidType> pckgUid(aUidType);
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	TInt r = CreateSubSession(aFs,EFsDirOpen,TIpcArgs(&aName,KEntryAttAllowUid,&pckgUid));
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIROPEN1RETURN, "r %d subs %x", (TUint) r, (TUint) SubSessionHandle());
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	return r;
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	}
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EFSRV_EXPORT_C TInt RDir::Open(RFs& aFs,const TDesC& aName,TUint anAttMask)
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/**
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Opens a directory using an attribute bitmask to filter the directory entry
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types that will subsequently be read.
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This function, or its overload, must be called before reading the entries in
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the directory.
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Note: to close the directory, use Close()
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@param aFs       The file server session.
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@param aName     Name of the directory to be opened. Any path components that
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                 are not specified here are taken from the session path.
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                 Note that the wildcard characters ? and *  can  be used.
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                 As with all directory paths aName must be terminated with '\',
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                 Please refer to "Structure of paths and filenames" section in the
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                 Symbian OS Library.
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@param anAttMask An attribute mask used by the Read() functions to filter
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                 the entry types required. Only those entries with the
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                 attributes specified here will be read. See KEntryAttNormal,
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                 and the other file or directory attributes.
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@return KErrNone, if successful, otherwise one of the other system-wide error
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        codes.
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@see KEntryAttNormal
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@capability AllFiles
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*/
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	{
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIROPEN2, "sess %x anAttMask %x", (TUint) Session().Handle(), (TUint) anAttMask);
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	OstTraceData(TRACE_BORDER, EFSRV_EDIROPEN2_EDIRNAME, "Dir %S", aName.Ptr(), aName.Length()<<1);
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	TUidType uidType(TUid::Null(),TUid::Null(),TUid::Null());
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	TPckgC<TUidType> pckgUid(uidType);
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	TInt r = CreateSubSession(aFs,EFsDirOpen,TIpcArgs(&aName,anAttMask,&pckgUid));
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIROPEN2RETURN, "r %d subs %x", (TUint) r, (TUint) SubSessionHandle());
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	return r;
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	}
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EFSRV_EXPORT_C void RDir::Close()
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/**
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Closes the directory.
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Any open files are closed when the file server session is closed.
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Close() is guaranteed to return, and provides no indication whether
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it completed successfully or not.
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*/
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	{
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIRCLOSE, "sess %x subs %x", (TUint) Session().Handle(), (TUint) SubSessionHandle());
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	CloseSubSession(EFsDirSubClose);
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	OstTrace0(TRACE_BORDER, EFSRV_EDIRCLOSERETURN, "");
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	}
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EFSRV_EXPORT_C TInt RDir::Read(TEntryArray& anArray) const
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/**
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Reads all filtered directory entries into the specified array.
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This is a synchronous function that returns when the operation is complete.
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@param anArray On successful return, contains filtered entries from
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               the directory.
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@return KErrNone, if the read operation is successful - the end of
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        the directory has not yet been reached, and there may be more entries
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        to be read;
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        KErrEof, if the read operation is successful - all the entries
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        in the directory have been read, and anArray contains the final
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        set of entries;
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        otherwise one of the other system-wide error codes
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        (e.g. KErrCorrupt, KErrNoMemory etc).
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*/
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	{
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIRREAD1, "sess %x subs %x", (TUint) Session().Handle(), (TUint) SubSessionHandle());
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	anArray.iCount=KCountNeeded;
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	TInt r = SendReceive(EFsDirReadPacked,TIpcArgs(&anArray.iBuf));
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIRREAD1RETURN, "r %d count %d", (TUint) r, (TUint) anArray.Count());
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	return r;
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	}
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EFSRV_EXPORT_C void RDir::Read(TEntryArray& anArray,TRequestStatus& aStatus) const
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/**
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Reads all filtered directory entries into the specified array.
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This is an asynchronous function.
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@param anArray On request completion, contains filtered entries from
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               the directory.
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@param aStatus The request status object. On completion, this will contain:
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               KErrNone, if the read operation is successful - the end of
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               the directory has not yet been reached, and there may be more
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               entries to be read;
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               KErrEof, if the read operation is successful - all the entries
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               in the directory have been read, and anArray contains the final
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               set of entries;
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               otherwise one of the other system-wide error codes
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               (e.g. KErrCorrupt, KErrNoMemory etc).
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*/
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	{
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	OstTraceExt3(TRACE_BORDER, EFSRV_EDIRREAD2, "sess %x subs %x status %x", (TUint) Session().Handle(), (TUint) SubSessionHandle(), (TUint) &aStatus);
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	anArray.iCount=KCountNeeded;
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	RSubSessionBase::SendReceive(EFsDirReadPacked,TIpcArgs(&anArray.iBuf),aStatus);
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	OstTrace0(TRACE_BORDER, EFSRV_EDIRREAD2RETURN, "");
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	}
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EFSRV_EXPORT_C TInt RDir::Read(TEntry& anEntry) const
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/**
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Reads a single directory entry.
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This is a synchronous function that returns when the operation is complete.
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@param anEntry On successful return, contains a directory entry.
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@return KErrNone, if successful, otherwise one of the other system-wide error
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        codes.
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*/
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	{
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	OstTraceExt2(TRACE_BORDER, EFSRV_EDIRREAD3, "sess %x subs %x", (TUint) Session().Handle(), (TUint) SubSessionHandle());
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	TPckg<TEntry> e(anEntry);
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	TInt r = SendReceive(EFsDirReadOne,TIpcArgs(&e));
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	OstTrace1(TRACE_BORDER, EFSRV_EDIRREAD3RETURN, "r %d", r);
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	return r;
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	}
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EFSRV_EXPORT_C void RDir::Read(TPckg<TEntry>& anEntry,TRequestStatus& aStatus) const
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/**
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Reads a single directory entry.
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This is an asynchronous function.
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@param anEntry On request completion, contains a directory entry.
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@param aStatus The request status object. On request completion, contains:
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               KErrNone, if successful; otherwise one of the other system-wide
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               error codes.
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*/
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	{
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	OstTraceExt3(TRACE_BORDER, EFSRV_EDIRREAD4, "sess %x subs %x status %x", (TUint) Session().Handle(), (TUint) SubSessionHandle(), (TUint) &aStatus);
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	RSubSessionBase::SendReceive(EFsDirReadOne,TIpcArgs(&anEntry),aStatus);
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	OstTrace0(TRACE_BORDER, EFSRV_EDIRREAD4RETURN, "");
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	}