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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_file.cpp
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//
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//
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#include "cl_std.h"
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static _LIT_SECURITY_POLICY_S1(KFileServerPolicy,KFileServerUidValue,ECapabilityTCB);
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EFSRV_EXPORT_C TInt RFile::Adopt(RFs& aFs, TInt aHandle)
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/**
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Adopts an already open file.
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@param aFs The file server session.
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@param aHandle The handle number of the already opened file
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@return KErrNone if successful,
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KErrBadHandle if the sub-session handle is invalid,
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otherwise one of the other system-wide error codes.
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@deprecated
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*/
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{
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TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileAdopt, MODULEUID, aFs.Handle(), aHandle);
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// duplicate the sub-session handle; don't panic if it's invalid.
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RFile file;
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TInt r = file.CreateSubSession(aFs, EFsFileDuplicate, TIpcArgs(aHandle, EFalse));
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if (r == KErrArgument)
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{
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TRACE1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptReturn, MODULEUID, KErrBadHandle);
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return KErrBadHandle;
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}
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else if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptReturn, MODULEUID, r);
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return r;
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}
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// adopt the duplicated handle
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r = CreateAutoCloseSubSession(aFs, EFsFileAdopt, TIpcArgs(file.SubSessionHandle(), KFileAdopt32));
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TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
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return r;
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}
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EFSRV_EXPORT_C TInt RFile::AdoptFromServer(TInt aFsHandle, TInt aFileHandle)
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/**
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Allows a client to adopt an already open file from a server.
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Assumes that the server's RFs and RFile handles have been sent to the
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client using TransferToClient().
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This RFile will own it's RFs session so that when the sub-session (RFile)
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is closed so will the RFs session.
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@param aFsHandle The file server session (RFs) handle
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@param aFileHandle The file (RFile) handle of the already opened file
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@return 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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TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServer, MODULEUID, aFsHandle, aFileHandle);
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RFs fs;
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TInt r = fs.SetReturnedHandle(aFsHandle, KFileServerPolicy);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServerReturn, MODULEUID, r);
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return r;
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}
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r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(aFileHandle, KFileAdopt32));
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TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServerReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
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return r;
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}
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EFSRV_EXPORT_C TInt RFile::AdoptFromClient(const RMessage2& aMsg, TInt aFsHandleIndex, TInt aFileHandleIndex)
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/**
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Allows a server to adopt an already open file from a client.
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The client's RFs and RFile handles are contained in message slots within aMsg.
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Assumes that the client's RFs and RFile handles have been sent to the server
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using TransferToServer().
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This RFile will own it's RFs session so that when the sub-session (RFile)
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is closed so will the RFs session.
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@param aMsg The message received from the client
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@param aFsHandleIndex The index that identifies the message slot
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of a file server session (RFs) handle
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@param aFileHandleIndex The index that identifies the message slot
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of the sub-session (RFile) handle of the already opened file
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@return 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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TInt fileHandle = NULL;
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TInt r = KErrNone;
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if (aFileHandleIndex == 0)
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fileHandle = aMsg.Int0();
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else if (aFileHandleIndex == 1)
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fileHandle = aMsg.Int1();
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else if (aFileHandleIndex == 2)
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fileHandle = aMsg.Int2();
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else if (aFileHandleIndex == 3)
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fileHandle = aMsg.Int3();
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else
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r = KErrArgument;
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#ifdef SYMBIAN_FTRACE_ENABLE
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TInt handle = NULL;
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if (aFsHandleIndex == 0)
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handle = aMsg.Int0();
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else if (aFsHandleIndex == 1)
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handle = aMsg.Int1();
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else if (aFsHandleIndex == 2)
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handle = aMsg.Int2();
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else if (aFsHandleIndex == 3)
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handle = aMsg.Int3();
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TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClient, MODULEUID, handle, fileHandle, aFsHandleIndex, aFileHandleIndex);
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#endif
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r);
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return r;
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}
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// Duplicates the file server (RFs) session handle identified by an
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// existing handle contained in the message slot at index aFsHandleIndex
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RFs fs;
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r = fs.Open(aMsg, aFsHandleIndex, KFileServerPolicy);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r);
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return r;
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}
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r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle, KFileAdopt32));
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TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
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return r;
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}
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EFSRV_EXPORT_C TInt RFile::AdoptFromCreator(TInt aFsHandleIndex, TInt aFileHandleIndex)
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/**
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Allows a server to adopt an already open file from a client process.
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The client's file-server (RFs) and file (RFile) handles are contained in
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this process's environment data slots.
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Assumes that the client's RFs and RFile handles have been sent to the server process
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using TransferToProcess().
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This RFile will own it's RFs session so that when the sub-session (RFile)
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is closed so will the RFs session.
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@param aFsHandleIndex An index that identifies the slot in the process
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environment data that contains the file server session (RFs) handle
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@param aFileHandleIndex An index that identifies the slot in the process
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environment data that contains the sub-session (RFile) handle
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of the already opened file
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@return 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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TInt fileHandle = NULL;
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TInt r = User::GetTIntParameter(aFileHandleIndex, fileHandle);
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TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreator, MODULEUID, fileHandle, aFsHandleIndex, aFileHandleIndex);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r);
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return r;
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}
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// Duplicates the file server (RFs) session handle identified by an
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// existing handle contained in the environment slot at index aFsHandleIndex
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RFs fs;
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r = fs.Open(aFsHandleIndex, KFileServerPolicy);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r);
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return r;
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}
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r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle, KFileAdopt32));
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TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
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return r;
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}
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/**
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Make a duplicate of the passed file handle in the same thread.
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By default, any thread in the process can use the duplicated handle to access the
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file. However, specifying EOwnerThread as the second parameter to this function,
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means that only the creating thread can use the handle.
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@param aFile The file handle to duplicate
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@param aType An enumeration whose enumerators define the ownership of this
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handle. If not explicitly specified, EOwnerProcess is taken
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as default.
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@return one of the other system-wide error codes.
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*/
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EFSRV_EXPORT_C TInt RFile::Duplicate(const RFile& aFile, TOwnerType aType)
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{
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TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileDuplicate, MODULEUID, aFile.Session().Handle(), aFile.SubSessionHandle(), aType);
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RFs fs;
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fs.SetHandle(aFile.Session().Handle());
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// Need to make a duplicate of the session handle in the current thread,
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// otherwise closing one session will close both sub-sessions.
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TInt r = fs.Duplicate(RThread(), aType);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileDuplicateReturn, MODULEUID, r);
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return r;
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}
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// duplicate the sub-session handle
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TInt dupSubSessionHandle;
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r = aFile.DuplicateHandle(dupSubSessionHandle);
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if (r != KErrNone)
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{
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileDuplicateReturn, MODULEUID, r);
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return r;
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}
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// adopt the duplicated sub-session handle
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r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(dupSubSessionHandle, KFileDuplicate));
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TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileDuplicateReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
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return r;
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}
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// Makes a duplicate of this file (RFile) handle in the current thread and
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// returns it in aSubSessionHandle.
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// The duplicate file handle will effectively be in limbo (although still
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// owned by the session) until :
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// (1) the session handle is duplicated into another process -
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// this happens in one of : TransferToClient(), TransferToProcess() or
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// AdoptFromClient() and
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// (2) the sub-session handle is transferred to the other process - using AdoptXXX()
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//
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TInt RFile::DuplicateHandle(TInt& aSubSessionHandle) const
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{
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RFs fs;
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fs.SetHandle(Session().Handle());
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RFile file;
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// duplicate the sub-session handle; panic if it's invalid.
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TInt r = file.CreateSubSession(fs, EFsFileDuplicate, TIpcArgs(SubSessionHandle(), ETrue));
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// return the duplicated handle
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// Note that this handle needs to be adopted before it can be used
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aSubSessionHandle = file.SubSessionHandle();
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return r;
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}
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/**
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Transfers an already open file to a server.
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Before this function can be called, the file server session which owns this file handle
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must first be marked as shareable by calling RFs::ShareProtected().
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This function packages handle details for this file into 2 arguments of a TIpcArgs object.
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When these arguments are sent in an IPC message, the server which receives them may
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call AdoptFromClient() to open a new RFile object which refers to the same file as this.
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@param aIpcArgs The IPC message arguments.
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@param aFsHandleIndex An index that identifies an argument in aIpcArgs where the
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file server session handle will be stored.
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This argument must not be used for anything else otherwise the
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results will be unpredictable.
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@param aFileHandleIndex An index that identifies an argument in aIpcArgs where the
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file handle will be stored.
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This argument must not be used for anything else otherwise the
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results will be unpredictable.
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@return KErrNone if successful, otherwise one of the other system-wide
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error codes.
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*/
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EFSRV_EXPORT_C TInt RFile::TransferToServer(TIpcArgs& aIpcArgs, TInt aFsHandleIndex, TInt aFileHandleIndex) const
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{
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TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToServer, MODULEUID, Session().Handle(), SubSessionHandle(), aFsHandleIndex, aFileHandleIndex);
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if ((aFsHandleIndex < 0) || (aFsHandleIndex > (KMaxMessageArguments-2)))
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{
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TRACE1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToServerReturn, MODULEUID, (TUint) KErrArgument);
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return KErrArgument;
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}
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TInt dupSubSessionHandle;
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TInt r = DuplicateHandle(dupSubSessionHandle);
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if (r == KErrNone)
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{
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aIpcArgs.Set(aFsHandleIndex, Session());
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aIpcArgs.Set(aFileHandleIndex, dupSubSessionHandle);
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}
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TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToServerReturn, MODULEUID, r);
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return r;
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}
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/**
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Transfers an already open file from a server to a client.
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Before this function can be called, the file server session which owns this file handle
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|
348 |
must first be marked as shareable by calling RFs::ShareProtected().
|
|
|
349 |
|
|
|
350 |
The file (RFile) handle is written to the client's address space to the package
|
|
|
351 |
buffer in the message address slot in aMsg identified by aFileHandleIndex.
|
|
|
352 |
|
|
|
353 |
If no error occurs, then the message is completed with the file-server (RFs)
|
|
|
354 |
session handle.
|
|
|
355 |
|
|
|
356 |
When the message completes, the client may call AdoptFromServer() to open
|
|
|
357 |
a new RFile object which refers to the same file as this.
|
|
|
358 |
|
|
|
359 |
Note that if an error occurs then the message is not completed.
|
|
|
360 |
|
|
|
361 |
@param aMsg A message received from the client
|
|
|
362 |
@param aFileHandleIndex Identifies the message slot that contains a package
|
|
|
363 |
buffer pointing to an address in the client's address space
|
|
|
364 |
to receive the file (RFile) handle
|
|
|
365 |
|
|
|
366 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
367 |
error codes.
|
|
|
368 |
*/
|
|
|
369 |
EFSRV_EXPORT_C TInt RFile::TransferToClient(const RMessage2& aMsg, TInt aFileHandleIndex) const
|
|
|
370 |
{
|
|
|
371 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToClient, MODULEUID, Session().Handle(), SubSessionHandle(), aFileHandleIndex);
|
|
|
372 |
|
|
|
373 |
if (TUint(aFileHandleIndex) >= TUint(KMaxMessageArguments))
|
|
|
374 |
{
|
|
|
375 |
TRACE1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToClientReturn, MODULEUID, (TUint) KErrArgument);
|
|
|
376 |
return KErrArgument;
|
|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
TInt dupSubSessionHandle;
|
|
|
380 |
TInt r = DuplicateHandle(dupSubSessionHandle);
|
|
|
381 |
if (r == KErrNone)
|
|
|
382 |
r = aMsg.Write(aFileHandleIndex, TPckgC<TInt>(dupSubSessionHandle));
|
|
|
383 |
|
|
|
384 |
if (r != KErrNone)
|
|
|
385 |
{
|
|
|
386 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToClientReturn, MODULEUID, r);
|
|
|
387 |
return r;
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
aMsg.Complete(Session());
|
|
|
391 |
|
|
|
392 |
TRACE1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToClientReturn, MODULEUID, r);
|
|
|
393 |
|
|
|
394 |
return r;
|
|
|
395 |
}
|
|
|
396 |
|
|
|
397 |
|
|
|
398 |
/**
|
|
|
399 |
Transfers an already open file to another process.
|
|
|
400 |
|
|
|
401 |
Before this function can be called, the file server session which owns this file handle
|
|
|
402 |
must first be marked as shareable by calling RFs::ShareProtected().
|
|
|
403 |
|
|
|
404 |
This function packages handle details for this file into 2 arguments in another
|
|
|
405 |
process's environment data slots.
|
|
|
406 |
When the other process runs, it may call AdoptFromCreator() to open a new RFile
|
|
|
407 |
object which refers to the same file as this.
|
|
|
408 |
|
|
|
409 |
@param aProcess A handle to another process.
|
|
|
410 |
@param aFsHandleIndex An index that identifies a slot in the process's
|
|
|
411 |
environment data which on exit will contain the file server
|
|
|
412 |
session (RFs) handle
|
|
|
413 |
This slot must not be used for anything else otherwise the
|
|
|
414 |
results will be unpredictable.
|
|
|
415 |
@param aFileHandleIndex An index that identifies a slot in the process's
|
|
|
416 |
environment data which on exit will contain the file
|
|
|
417 |
(RFile) handle.
|
|
|
418 |
This slot must not be used for anything else otherwise the
|
|
|
419 |
results will be unpredictable.
|
|
|
420 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
421 |
error codes.
|
|
|
422 |
*/
|
|
|
423 |
// NB slot 0 is reserved for the command line
|
|
|
424 |
EFSRV_EXPORT_C TInt RFile::TransferToProcess(RProcess& aProcess, TInt aFsHandleIndex, TInt aFileHandleIndex) const
|
|
|
425 |
{
|
|
|
426 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToProcess, MODULEUID, Session().Handle(), SubSessionHandle(), aFsHandleIndex, aFileHandleIndex);
|
|
|
427 |
|
|
|
428 |
TInt dupSubSessionHandle;
|
|
|
429 |
TInt r = DuplicateHandle(dupSubSessionHandle);
|
|
|
430 |
|
|
|
431 |
if (r == KErrNone)
|
|
|
432 |
r = aProcess.SetParameter(aFsHandleIndex, RHandleBase(Session()));
|
|
|
433 |
|
|
|
434 |
if (r == KErrNone)
|
|
|
435 |
r = aProcess.SetParameter(aFileHandleIndex, dupSubSessionHandle);
|
|
|
436 |
|
|
|
437 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileTransferToProcessReturn, MODULEUID, r);
|
|
|
438 |
|
|
|
439 |
return r;
|
|
|
440 |
}
|
|
|
441 |
|
|
|
442 |
|
|
|
443 |
EFSRV_EXPORT_C TInt RFile::Name(TDes& aName) const
|
|
|
444 |
/**
|
|
|
445 |
Gets the final part of a filename
|
|
|
446 |
|
|
|
447 |
This is used to retrieve the name and extension of a file that has been
|
|
|
448 |
passed from one process to another using the RFile::AdoptXXX() methods.
|
|
|
449 |
|
|
|
450 |
@param aName On return, contains the name of the file, including the name and
|
|
|
451 |
extension but excluding the drive letter and path.
|
|
|
452 |
|
|
|
453 |
@return KErrNone if successful, otherwise one of the other
|
|
|
454 |
system-wide error codes.
|
|
|
455 |
|
|
|
456 |
*/
|
|
|
457 |
{
|
|
|
458 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileName, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
459 |
|
|
|
460 |
TInt r = SendReceive(EFsFileName, TIpcArgs(&aName));
|
|
|
461 |
|
|
|
462 |
TRACERETMULT2(UTF::EBorder, UTraceModuleEfsrv::EFileNameReturn, MODULEUID, r, aName);
|
|
|
463 |
|
|
|
464 |
return r;
|
|
|
465 |
}
|
|
|
466 |
|
|
|
467 |
|
|
|
468 |
EFSRV_EXPORT_C TInt RFile::FullName(TDes& aName) const
|
|
|
469 |
/**
|
|
|
470 |
Gets the full filename
|
|
|
471 |
|
|
|
472 |
This is used to retrieve the full filename, including drive and path,
|
|
|
473 |
of a file that has been passed from one process to another using the
|
|
|
474 |
RFile::AdoptXXX() methods.
|
|
|
475 |
|
|
|
476 |
@param aName On return, contains the full name of the file, including drive and path.
|
|
|
477 |
|
|
|
478 |
@return KErrNone if successful, otherwise one of the other
|
|
|
479 |
system-wide error codes.
|
|
|
480 |
|
|
|
481 |
*/
|
|
|
482 |
{
|
|
|
483 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileFullName, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
484 |
|
|
|
485 |
TInt r = SendReceive(EFsFileFullName, TIpcArgs(&aName));
|
|
|
486 |
|
|
|
487 |
TRACERETMULT2(UTF::EBorder, UTraceModuleEfsrv::EFileFullNameReturn, MODULEUID, r, aName);
|
|
|
488 |
|
|
|
489 |
return r;
|
|
|
490 |
}
|
|
|
491 |
|
|
|
492 |
|
|
|
493 |
|
|
|
494 |
EFSRV_EXPORT_C TInt RFile::Open(RFs& aFs,const TDesC& aName,TUint aMode)
|
|
|
495 |
/**
|
|
|
496 |
Opens an existing file for reading or writing.
|
|
|
497 |
|
|
|
498 |
If the file does not already exist, an error is returned.
|
|
|
499 |
|
|
|
500 |
Notes:
|
|
|
501 |
|
|
|
502 |
1. To close the file, use Close()
|
|
|
503 |
|
|
|
504 |
2. Attempting to open a file with the read-only attribute using the EFileWrite
|
|
|
505 |
access mode results in an error.
|
|
|
506 |
|
|
|
507 |
3. Attempting to open a file which is greater than or equal to 2GByte (2,147,483,648 bytes)
|
|
|
508 |
will fail with KErrTooBig
|
|
|
509 |
|
|
|
510 |
4. After a file has been opened, the current write position is set to the start
|
|
|
511 |
of the file.
|
|
|
512 |
If necessary, use RFile::Seek() to move to a different position within
|
|
|
513 |
the file.
|
|
|
514 |
|
|
|
515 |
@param aFs The file server session.
|
|
|
516 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
517 |
or directory), which are not specified, are taken from
|
|
|
518 |
the session path.The file name shall not contain wild cards
|
|
|
519 |
('?' or '*' characters) and illegal characters like
|
|
|
520 |
'<', '>', ':', '"', '/', '|' and '\000'. Backslash '\\' character
|
|
|
521 |
is allowed only as a path delimiter. The filename containing only
|
|
|
522 |
white space characters (See TChar::IsSpace()) is also illegal.
|
|
|
523 |
|
|
|
524 |
@param aMode The mode in which the file is opened. See TFileMode.
|
|
|
525 |
|
|
|
526 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
527 |
error codes.
|
|
|
528 |
|
|
|
529 |
@see TFileMode
|
|
|
530 |
|
|
|
531 |
@capability Dependent If the path for aName is /Sys and aMode is neither
|
|
|
532 |
EFileShareReadersOnly nor EFileRead then Tcb capability is required.
|
|
|
533 |
@capability Dependent If the path for aName is /Sys and aMode is either
|
|
|
534 |
EFileShareReadersOnly or EFileRead then Allfiles capability is required.
|
|
|
535 |
@capability Dependent If the path for aName begins with /Private and does not match this process'
|
|
|
536 |
SID then AllFiles capability is required.
|
|
|
537 |
@capability Dependent If the path for aName begins with /Resource and aMode is neither
|
|
|
538 |
EFileShareReadersOrWriters|EFileRead nor EFileShareReadersOnly
|
|
|
539 |
nor EFileRead then Tcb capability is required.
|
|
|
540 |
|
|
|
541 |
*/
|
|
|
542 |
{
|
|
|
543 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileOpen, MODULEUID, aFs.Handle(), aMode, aName);
|
|
|
544 |
|
|
|
545 |
aMode &= ~EFileBigFile;
|
|
|
546 |
TInt r = CreateSubSession(aFs,EFsFileOpen,TIpcArgs(&aName,aMode));
|
|
|
547 |
|
|
|
548 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileOpenReturn, MODULEUID, r, SubSessionHandle());
|
|
|
549 |
|
|
|
550 |
return r;
|
|
|
551 |
}
|
|
|
552 |
|
|
|
553 |
|
|
|
554 |
EFSRV_EXPORT_C void RFile::Close()
|
|
|
555 |
/**
|
|
|
556 |
Closes the file.
|
|
|
557 |
|
|
|
558 |
Any open files are closed when the file server session is closed.
|
|
|
559 |
|
|
|
560 |
Close() is guaranteed to return, and provides no indication whether
|
|
|
561 |
it completed successfully or not. When closing a file you have written to,
|
|
|
562 |
you should ensure that data is committed to the file by invoking RFile::Flush()
|
|
|
563 |
before closing. If Flush() completes successfully, Close() is essentially a
|
|
|
564 |
no-operation.
|
|
|
565 |
*/
|
|
|
566 |
{
|
|
|
567 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileClose, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
568 |
|
|
|
569 |
#if defined (SYMBIAN_FTRACE_ENABLE) && defined(__DLL__)
|
|
|
570 |
// Need to close the handle to the trace LDD if this is an auto-close subsession
|
|
|
571 |
// as these close their parent session by calling RHandleBase::Close(), i.e. they
|
|
|
572 |
// bypass RFs::Close() which would normally be responsible for closing the LDD
|
|
|
573 |
TInt h = Session().Handle() ^ CObjectIx::ENoClose;
|
|
|
574 |
if ( h != NULL && (!(h & CObjectIx::ENoClose)) )
|
|
|
575 |
{
|
|
|
576 |
RFTRACE_CLOSE;
|
|
|
577 |
}
|
|
|
578 |
#endif
|
|
|
579 |
|
|
|
580 |
CloseSubSession(EFsFileSubClose);
|
|
|
581 |
|
|
|
582 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileCloseReturn, MODULEUID);
|
|
|
583 |
}
|
|
|
584 |
|
|
|
585 |
|
|
|
586 |
EFSRV_EXPORT_C TInt RFile::Create(RFs& aFs,const TDesC& aName,TUint aMode)
|
|
|
587 |
/**
|
|
|
588 |
Creates and opens a new file for writing.
|
|
|
589 |
|
|
|
590 |
If the file already exists, an error is returned.
|
|
|
591 |
|
|
|
592 |
If the resulting path does not exist, then the operation cannot proceed and
|
|
|
593 |
the function returns an error code.
|
|
|
594 |
|
|
|
595 |
Notes:
|
|
|
596 |
|
|
|
597 |
1. To close the file, use Close()
|
|
|
598 |
|
|
|
599 |
2. It automatically sets the file's archive attribute.
|
|
|
600 |
|
|
|
601 |
@param aFs The file server session.
|
|
|
602 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
603 |
or directory), which are not specified, are taken from
|
|
|
604 |
the session path. The file name shall not contain wild cards
|
|
|
605 |
('?' or '*' characters) and illegal characters like
|
|
|
606 |
'<', '>', ':', '"', '/', '|' and '\000'. Backslash '\\' character
|
|
|
607 |
is allowed only as a path delimiter. The filename containing only
|
|
|
608 |
white space characters (See TChar::IsSpace()) is also illegal.
|
|
|
609 |
|
|
|
610 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
611 |
automatically set to EFileWrite. See TFileMode.
|
|
|
612 |
|
|
|
613 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
614 |
error codes.
|
|
|
615 |
|
|
|
616 |
@see TFileMode
|
|
|
617 |
|
|
|
618 |
@capability Dependent If the path in aName starts with /Sys then capability Tcb is required
|
|
|
619 |
@capability Dependent If the path in aName starts with /Resource then capability Tcb is required
|
|
|
620 |
@capability Dependent If the path in aName starts with /Private and does not match this process'
|
|
|
621 |
SID then AllFiles capability is required.
|
|
|
622 |
|
|
|
623 |
*/
|
|
|
624 |
{
|
|
|
625 |
aMode &= ~EFileBigFile;
|
|
|
626 |
|
|
|
627 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileCreate, MODULEUID, aFs.Handle(), aMode, aName);
|
|
|
628 |
|
|
|
629 |
TInt r = CreateSubSession(aFs,EFsFileCreate,TIpcArgs(&aName,aMode));
|
|
|
630 |
|
|
|
631 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileCreateReturn, MODULEUID, r, SubSessionHandle());
|
|
|
632 |
|
|
|
633 |
return r;
|
|
|
634 |
}
|
|
|
635 |
|
|
|
636 |
|
|
|
637 |
|
|
|
638 |
|
|
|
639 |
EFSRV_EXPORT_C TInt RFile::Replace(RFs& aFs,const TDesC& aName,TUint aMode)
|
|
|
640 |
/**
|
|
|
641 |
Opens a file for writing, replacing the content of any existing file of the
|
|
|
642 |
same name if it exists, or creating a new file if it does not exist.
|
|
|
643 |
|
|
|
644 |
If the resulting path exists, then:
|
|
|
645 |
|
|
|
646 |
- the length of an existing file with the same filename is re-set to zero
|
|
|
647 |
|
|
|
648 |
- a new file is created, if no existing file with the same filename can be found.
|
|
|
649 |
|
|
|
650 |
If the resulting path does not exist, then the operation cannot proceed and
|
|
|
651 |
the function returns an error code.
|
|
|
652 |
|
|
|
653 |
Notes:
|
|
|
654 |
|
|
|
655 |
- To close the file, use Close(), defined in the base class RFsBase.
|
|
|
656 |
|
|
|
657 |
- It automatically sets the file's archive attribute.
|
|
|
658 |
|
|
|
659 |
@param aFs The file server session.
|
|
|
660 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
661 |
or directory), which are not specified, are taken from
|
|
|
662 |
the session path. The file name shall not contain wild cards
|
|
|
663 |
('?' or '*' characters) and illegal characters like
|
|
|
664 |
'<', '>', ':', '"', '/', '|' and '\000'. Backslash '\\' character
|
|
|
665 |
is allowed only as a path delimiter. The filename containing only
|
|
|
666 |
white space characters (See TChar::IsSpace()) is also illegal.
|
|
|
667 |
|
|
|
668 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
669 |
automatically set to EFileWrite. See TFileMode.
|
|
|
670 |
|
|
|
671 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
672 |
error codes.
|
|
|
673 |
|
|
|
674 |
@see TFileMode
|
|
|
675 |
|
|
|
676 |
@capability Dependent If the path in aName starts with /Sys then capability Tcb is required
|
|
|
677 |
@capability Dependent If the path in aName starts with /Resource then capability Tcb is required
|
|
|
678 |
@capability Dependent If the path in aName starts with /Private and does not match this process'
|
|
|
679 |
SID then AllFiles capability is required.
|
|
|
680 |
|
|
|
681 |
*/
|
|
|
682 |
{
|
|
|
683 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileReplace, MODULEUID, aFs.Handle(), aMode, aName);
|
|
|
684 |
aMode &= ~EFileBigFile;
|
|
|
685 |
TInt r = CreateSubSession(aFs,EFsFileReplace,TIpcArgs(&aName,aMode));
|
|
|
686 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileReplaceReturn, MODULEUID, r, SubSessionHandle());
|
|
|
687 |
return r;
|
|
|
688 |
}
|
|
|
689 |
|
|
|
690 |
|
|
|
691 |
|
|
|
692 |
|
|
|
693 |
EFSRV_EXPORT_C TInt RFile::Temp(RFs& aFs,const TDesC& aPath,TFileName& aName,TUint aMode)
|
|
|
694 |
/**
|
|
|
695 |
Creates and opens a temporary file with a unique name for writing and reading.
|
|
|
696 |
|
|
|
697 |
Notes:
|
|
|
698 |
|
|
|
699 |
1. To close the file, use Close()
|
|
|
700 |
|
|
|
701 |
@param aFs The file server session.
|
|
|
702 |
@param aPath The directory in which the file is created.
|
|
|
703 |
@param aName On return, contains the full path and file name of the file.
|
|
|
704 |
The filename is guaranteed to be unique within the directory
|
|
|
705 |
specified by aPath.
|
|
|
706 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
707 |
automatically set to EFileWrite. See TFileMode.
|
|
|
708 |
|
|
|
709 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
710 |
error codes.
|
|
|
711 |
|
|
|
712 |
@see TFileMode
|
|
|
713 |
|
|
|
714 |
@capability Dependent If aPath starts with /Sys then capability Tcb is required
|
|
|
715 |
@capability Dependent If aPath starts with /Resource then capability Tcb is required
|
|
|
716 |
@capability Dependent If aPath starts with /Private and does not match this process'
|
|
|
717 |
SID then AllFiles capability is required.
|
|
|
718 |
*/
|
|
|
719 |
{
|
|
|
720 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileTemp, MODULEUID, aFs.Handle(), aPath, aMode);
|
|
|
721 |
aMode &= ~EFileBigFile;
|
|
|
722 |
TInt r = CreateSubSession(aFs,EFsFileTemp,TIpcArgs(&aPath,aMode,&aName));
|
|
|
723 |
TRACERETMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileTempReturn, MODULEUID, r, SubSessionHandle(), aName);
|
|
|
724 |
return r;
|
|
|
725 |
}
|
|
|
726 |
|
|
|
727 |
|
|
|
728 |
|
|
|
729 |
|
|
|
730 |
EFSRV_EXPORT_C TInt RFile::Read(TDes8& aDes) const
|
|
|
731 |
/**
|
|
|
732 |
Reads from the file at the current position.
|
|
|
733 |
|
|
|
734 |
This is a synchronous function.
|
|
|
735 |
|
|
|
736 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
737 |
no error is returned.
|
|
|
738 |
The descriptor's length is set to the number of bytes read into
|
|
|
739 |
it. Therefore, when reading through a file,the end of file has been reached
|
|
|
740 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
741 |
|
|
|
742 |
@param aDes Descriptor into which binary data is read. Any existing contents
|
|
|
743 |
are overwritten. On return, its length is set to the number of
|
|
|
744 |
bytes read.
|
|
|
745 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
746 |
codes.
|
|
|
747 |
|
|
|
748 |
@see TDesC8::Length
|
|
|
749 |
*/
|
|
|
750 |
{
|
|
|
751 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileRead1, MODULEUID, Session().Handle(), SubSessionHandle(), aDes.MaxLength());
|
|
|
752 |
|
|
|
753 |
TInt r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),I64LOW(KCurrentPosition64)));
|
|
|
754 |
|
|
|
755 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead1Return, MODULEUID, r, aDes.Length());
|
|
|
756 |
|
|
|
757 |
return r;
|
|
|
758 |
}
|
|
|
759 |
|
|
|
760 |
|
|
|
761 |
|
|
|
762 |
|
|
|
763 |
EFSRV_EXPORT_C void RFile::Read(TDes8& aDes,TRequestStatus& aStatus) const
|
|
|
764 |
/**
|
|
|
765 |
Reads from the file at the current position.
|
|
|
766 |
|
|
|
767 |
This is an asynchronous function.
|
|
|
768 |
|
|
|
769 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
770 |
no error is returned.
|
|
|
771 |
The descriptor's length is set to the number of bytes read into
|
|
|
772 |
it. Therefore, when reading through a file,the end of file has been reached
|
|
|
773 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
774 |
|
|
|
775 |
@param aDes Descriptor into which binary data is read. Any existing contents
|
|
|
776 |
are overwritten. On return, its length is set to the number of
|
|
|
777 |
bytes read.
|
|
|
778 |
NB: this function is asynchronous and the request that it
|
|
|
779 |
represents may not complete until some time after the call
|
|
|
780 |
to the function has returned. It is important, therefore, that
|
|
|
781 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
782 |
been notified that the request is complete.
|
|
|
783 |
|
|
|
784 |
@param aStatus Request status. On completion contains:
|
|
|
785 |
KErrNone, if successful, otherwise one of the other system-wide error codes.
|
|
|
786 |
|
|
|
787 |
@see TDesC8::Length
|
|
|
788 |
*/
|
|
|
789 |
{
|
|
|
790 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileRead2, MODULEUID, Session().Handle(), SubSessionHandle(), aDes.MaxLength(), &aStatus);
|
|
|
791 |
|
|
|
792 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),I64LOW(KCurrentPosition64)),aStatus);
|
|
|
793 |
|
|
|
794 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead2Return, MODULEUID);
|
|
|
795 |
}
|
|
|
796 |
|
|
|
797 |
|
|
|
798 |
|
|
|
799 |
|
|
|
800 |
EFSRV_EXPORT_C TInt RFile::Read(TDes8& aDes,TInt aLength) const
|
|
|
801 |
/**
|
|
|
802 |
Reads the specified number of bytes of binary data from the file at the current position.
|
|
|
803 |
|
|
|
804 |
This is a synchronous function.
|
|
|
805 |
|
|
|
806 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
807 |
no error is returned.
|
|
|
808 |
The descriptor's length is set to the number of bytes read into
|
|
|
809 |
it. Therefore, when reading through a file,the end of file has been reached
|
|
|
810 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
811 |
Assuming aLength is less than the maximum length of the descriptor, the only circumstances
|
|
|
812 |
in which Read() can return fewer bytes than requested, is when the end of
|
|
|
813 |
file is reached or if an error occurs.
|
|
|
814 |
|
|
|
815 |
@param aDes Descriptor into which binary data is read. Any existing
|
|
|
816 |
contents are overwritten. On return, its length is set to
|
|
|
817 |
the number of bytes read.
|
|
|
818 |
|
|
|
819 |
@param aLength The number of bytes to be read from the file into the descriptor.
|
|
|
820 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
821 |
maximum length, the function returns KErrOverflow.
|
|
|
822 |
This value must not be negative, otherwise the function
|
|
|
823 |
returns KErrArgument.
|
|
|
824 |
|
|
|
825 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
826 |
codes.
|
|
|
827 |
*/
|
|
|
828 |
{
|
|
|
829 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileRead1, MODULEUID, Session().Handle(), SubSessionHandle(), aLength);
|
|
|
830 |
|
|
|
831 |
if (aLength==0)
|
|
|
832 |
{
|
|
|
833 |
aDes.Zero();
|
|
|
834 |
return(KErrNone);
|
|
|
835 |
}
|
|
|
836 |
else if(aLength>aDes.MaxLength())
|
|
|
837 |
{
|
|
|
838 |
return(KErrOverflow);
|
|
|
839 |
}
|
|
|
840 |
TInt r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,I64LOW(KCurrentPosition64)));
|
|
|
841 |
|
|
|
842 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead1Return, MODULEUID, r, aDes.Length());
|
|
|
843 |
|
|
|
844 |
return r;
|
|
|
845 |
}
|
|
|
846 |
|
|
|
847 |
|
|
|
848 |
|
|
|
849 |
|
|
|
850 |
EFSRV_EXPORT_C void RFile::Read(TDes8& aDes,TInt aLength,TRequestStatus& aStatus) const
|
|
|
851 |
/**
|
|
|
852 |
Reads a specified number of bytes of binary data from the file at the current position.
|
|
|
853 |
|
|
|
854 |
This is an asynchronous function.
|
|
|
855 |
|
|
|
856 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
857 |
no error is returned.
|
|
|
858 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
859 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
860 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
861 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
862 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
863 |
the end of file is reached or if an error has occurred.
|
|
|
864 |
|
|
|
865 |
@param aDes Descriptor into which binary data is read. Any existing
|
|
|
866 |
contents are overwritten. On return, its length is set to the
|
|
|
867 |
number of bytes read.
|
|
|
868 |
NB: this function is asynchronous and the request that it
|
|
|
869 |
represents may not complete until some time after the call
|
|
|
870 |
to the function has returned. It is important, therefore, that
|
|
|
871 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
872 |
been notified that the request is complete.
|
|
|
873 |
|
|
|
874 |
@param aLength The number of bytes to be read from the file into the descriptor.
|
|
|
875 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
876 |
maximum length, then the function updates aStatus parameter with KErrOverflow.
|
|
|
877 |
It must not be negative otherwise the function updates aStatus with KErrArgument.
|
|
|
878 |
|
|
|
879 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
880 |
otherwise one of the other system-wide error codes.
|
|
|
881 |
*/
|
|
|
882 |
{
|
|
|
883 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileRead2, MODULEUID, Session().Handle(), SubSessionHandle(), aLength, &aStatus);
|
|
|
884 |
|
|
|
885 |
if (aLength==0)
|
|
|
886 |
{
|
|
|
887 |
aDes.Zero();
|
|
|
888 |
TRequestStatus* req=(&aStatus);
|
|
|
889 |
User::RequestComplete(req,KErrNone);
|
|
|
890 |
return;
|
|
|
891 |
}
|
|
|
892 |
else if(aLength>aDes.MaxLength())
|
|
|
893 |
{
|
|
|
894 |
TRequestStatus* req=(&aStatus);
|
|
|
895 |
User::RequestComplete(req,KErrOverflow);
|
|
|
896 |
return;
|
|
|
897 |
}
|
|
|
898 |
|
|
|
899 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,I64LOW(KCurrentPosition64)),aStatus);
|
|
|
900 |
|
|
|
901 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead2Return, MODULEUID);
|
|
|
902 |
}
|
|
|
903 |
|
|
|
904 |
|
|
|
905 |
|
|
|
906 |
|
|
|
907 |
EFSRV_EXPORT_C TInt RFile::Read(TInt aPos,TDes8& aDes) const
|
|
|
908 |
/**
|
|
|
909 |
Reads from the file at the specified offset within the file
|
|
|
910 |
|
|
|
911 |
This is a synchronous function.
|
|
|
912 |
|
|
|
913 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
914 |
no error is returned.
|
|
|
915 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
916 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
917 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
918 |
|
|
|
919 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
920 |
the start of the file. If no position is specified, reading
|
|
|
921 |
begins at the current file position.
|
|
|
922 |
If aPos is beyond the end of the file, the function returns
|
|
|
923 |
a zero length descriptor.
|
|
|
924 |
|
|
|
925 |
@param aDes The descriptor into which binary data is read. Any existing content
|
|
|
926 |
is overwritten. On return, its length is set to the number of
|
|
|
927 |
bytes read.
|
|
|
928 |
|
|
|
929 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
930 |
codes.
|
|
|
931 |
|
|
|
932 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
933 |
*/
|
|
|
934 |
{
|
|
|
935 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.MaxLength());
|
|
|
936 |
|
|
|
937 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
938 |
|
|
|
939 |
TInt r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),aPos));
|
|
|
940 |
|
|
|
941 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
942 |
|
|
|
943 |
return r;
|
|
|
944 |
}
|
|
|
945 |
|
|
|
946 |
|
|
|
947 |
|
|
|
948 |
|
|
|
949 |
EFSRV_EXPORT_C void RFile::Read(TInt aPos,TDes8& aDes,TRequestStatus& aStatus) const
|
|
|
950 |
/**
|
|
|
951 |
Reads from the file at the specified offset within the file.
|
|
|
952 |
|
|
|
953 |
This is an asynchronous function.
|
|
|
954 |
|
|
|
955 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
956 |
no error is returned.
|
|
|
957 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
958 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
959 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
960 |
|
|
|
961 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
962 |
the start of the file. If no position is specified,
|
|
|
963 |
reading begins at the current file position.
|
|
|
964 |
If aPos is beyond the end of the file, the function returns
|
|
|
965 |
a zero length descriptor.
|
|
|
966 |
|
|
|
967 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
968 |
content is overwritten. On return, its length is set to
|
|
|
969 |
the number of bytes read.
|
|
|
970 |
NB: this function is asynchronous and the request that it
|
|
|
971 |
represents may not complete until some time after the call
|
|
|
972 |
to the function has returned. It is important, therefore, that
|
|
|
973 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
974 |
been notified that the request is complete.
|
|
|
975 |
|
|
|
976 |
@param aStatus The request status. On completion, contains an error code of KErrNone
|
|
|
977 |
if successful, otherwise one of the other system-wide error codes.
|
|
|
978 |
|
|
|
979 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
980 |
*/
|
|
|
981 |
{
|
|
|
982 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.MaxLength(), &aStatus);
|
|
|
983 |
|
|
|
984 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
985 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),aPos),aStatus);
|
|
|
986 |
|
|
|
987 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
988 |
}
|
|
|
989 |
|
|
|
990 |
|
|
|
991 |
|
|
|
992 |
|
|
|
993 |
EFSRV_EXPORT_C TInt RFile::Read(TInt aPos,TDes8& aDes,TInt aLength) const
|
|
|
994 |
/**
|
|
|
995 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
996 |
offset within the file.
|
|
|
997 |
|
|
|
998 |
This is a synchronous function.
|
|
|
999 |
|
|
|
1000 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
1001 |
no error is returned.
|
|
|
1002 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
1003 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
1004 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
1005 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
1006 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
1007 |
the end of file is reached or if an error has occurred.
|
|
|
1008 |
|
|
|
1009 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
1010 |
the start of the file. If no position is specified,
|
|
|
1011 |
reading begins at the current file position.
|
|
|
1012 |
If aPos is beyond the end of the file, the function returns
|
|
|
1013 |
a zero length descriptor.
|
|
|
1014 |
|
|
|
1015 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
1016 |
contents are overwritten. On return, its length is set to
|
|
|
1017 |
the number of bytes read.
|
|
|
1018 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
1019 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
1020 |
maximum length, then the function updates aStatus parameter with KErrOverflow.
|
|
|
1021 |
It must not be negative otherwise the function updates aStatus with KErrArgument.
|
|
|
1022 |
|
|
|
1023 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
1024 |
error codes.
|
|
|
1025 |
|
|
|
1026 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1027 |
*/
|
|
|
1028 |
{
|
|
|
1029 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength);
|
|
|
1030 |
|
|
|
1031 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1032 |
if (aLength==0)
|
|
|
1033 |
{
|
|
|
1034 |
aDes.Zero();
|
|
|
1035 |
return(KErrNone);
|
|
|
1036 |
}
|
|
|
1037 |
else if(aLength>aDes.MaxLength())
|
|
|
1038 |
{
|
|
|
1039 |
return(KErrOverflow);
|
|
|
1040 |
}
|
|
|
1041 |
|
|
|
1042 |
TInt r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,aPos));
|
|
|
1043 |
|
|
|
1044 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
1045 |
|
|
|
1046 |
return r;
|
|
|
1047 |
}
|
|
|
1048 |
|
|
|
1049 |
|
|
|
1050 |
|
|
|
1051 |
|
|
|
1052 |
EFSRV_EXPORT_C void RFile::Read(TInt aPos,TDes8& aDes,TInt aLength,TRequestStatus& aStatus) const
|
|
|
1053 |
/**
|
|
|
1054 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
1055 |
offset within the file.
|
|
|
1056 |
|
|
|
1057 |
This is an asynchronous function.
|
|
|
1058 |
|
|
|
1059 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
1060 |
no error is returned.
|
|
|
1061 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
1062 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
1063 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
1064 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
1065 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
1066 |
the end of file is reached or if an error has occurred.
|
|
|
1067 |
|
|
|
1068 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
1069 |
the start of the file. If no position is specified,
|
|
|
1070 |
reading begins at the current file position.
|
|
|
1071 |
If aPos is beyond the end of the file, the function returns
|
|
|
1072 |
a zero length descriptor.
|
|
|
1073 |
|
|
|
1074 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
1075 |
contents are overwritten. On return, its length is set to
|
|
|
1076 |
the number of bytes read.
|
|
|
1077 |
NB: this function is asynchronous and the request that it
|
|
|
1078 |
represents may not complete until some time after the call
|
|
|
1079 |
to the function has returned. It is important, therefore, that
|
|
|
1080 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
1081 |
been notified that the request is complete.
|
|
|
1082 |
|
|
|
1083 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
1084 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
1085 |
maximum length, then the function returns KErrOverflow.
|
|
|
1086 |
It must not be negative otherwise the function returns KErrArgument.
|
|
|
1087 |
|
|
|
1088 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
1089 |
otherwise one of the other system-wide error codes.
|
|
|
1090 |
|
|
|
1091 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1092 |
*/
|
|
|
1093 |
{
|
|
|
1094 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength, &aStatus);
|
|
|
1095 |
|
|
|
1096 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1097 |
if (aLength==0)
|
|
|
1098 |
{
|
|
|
1099 |
aDes.Zero();
|
|
|
1100 |
TRequestStatus* req=(&aStatus);
|
|
|
1101 |
User::RequestComplete(req,KErrNone);
|
|
|
1102 |
return;
|
|
|
1103 |
}
|
|
|
1104 |
else if(aLength>aDes.MaxLength())
|
|
|
1105 |
{
|
|
|
1106 |
TRequestStatus* req=(&aStatus);
|
|
|
1107 |
User::RequestComplete(req,KErrOverflow);
|
|
|
1108 |
return;
|
|
|
1109 |
}
|
|
|
1110 |
|
|
|
1111 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,aPos),aStatus);
|
|
|
1112 |
|
|
|
1113 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
1114 |
}
|
|
|
1115 |
|
|
|
1116 |
|
|
|
1117 |
|
|
|
1118 |
|
|
|
1119 |
EFSRV_EXPORT_C void RFile::ReadCancel(TRequestStatus& aStatus) const
|
|
|
1120 |
/**
|
|
|
1121 |
Cancels a specific outstanding asynchronous read request.
|
|
|
1122 |
|
|
|
1123 |
The outstanding request completes with KErrCancel.
|
|
|
1124 |
|
|
|
1125 |
@param aStat The request status object identified with the original
|
|
|
1126 |
asynchronous read.
|
|
|
1127 |
*/
|
|
|
1128 |
{
|
|
|
1129 |
if(aStatus != KRequestPending)
|
|
|
1130 |
return;
|
|
|
1131 |
SendReceive(EFsFileReadCancel, TIpcArgs(&aStatus));
|
|
|
1132 |
}
|
|
|
1133 |
|
|
|
1134 |
|
|
|
1135 |
|
|
|
1136 |
|
|
|
1137 |
EFSRV_EXPORT_C void RFile::ReadCancel() const
|
|
|
1138 |
/**
|
|
|
1139 |
Cancels all outstanding asynchronous read requests for this subsession.
|
|
|
1140 |
|
|
|
1141 |
All outstanding requests complete with KErrCancel.
|
|
|
1142 |
*/
|
|
|
1143 |
{
|
|
|
1144 |
SendReceive(EFsFileReadCancel, TIpcArgs(NULL));
|
|
|
1145 |
}
|
|
|
1146 |
|
|
|
1147 |
|
|
|
1148 |
|
|
|
1149 |
|
|
|
1150 |
EFSRV_EXPORT_C TInt RFile::Write(const TDesC8& aDes)
|
|
|
1151 |
/**
|
|
|
1152 |
Writes to the file at the current offset within the file.
|
|
|
1153 |
|
|
|
1154 |
This is a synchronous function.
|
|
|
1155 |
|
|
|
1156 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1157 |
|
|
|
1158 |
@param aDes The descriptor from which binary data is written.
|
|
|
1159 |
The function writes the entire contents of aDes to the file.
|
|
|
1160 |
|
|
|
1161 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1162 |
codes.
|
|
|
1163 |
*/
|
|
|
1164 |
{
|
|
|
1165 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1, MODULEUID, Session().Handle(), SubSessionHandle(), aDes.Length());
|
|
|
1166 |
TInt r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),I64LOW(KCurrentPosition64)));
|
|
|
1167 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1Return, MODULEUID, r);
|
|
|
1168 |
return r;
|
|
|
1169 |
}
|
|
|
1170 |
|
|
|
1171 |
|
|
|
1172 |
EFSRV_EXPORT_C void RFile::Write(const TDesC8& aDes,TRequestStatus& aStatus)
|
|
|
1173 |
/**
|
|
|
1174 |
Writes to the file at the current offset within the file.
|
|
|
1175 |
|
|
|
1176 |
This is an asynchronous function.
|
|
|
1177 |
|
|
|
1178 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1179 |
|
|
|
1180 |
@param aDes The descriptor from which binary data is written.
|
|
|
1181 |
The function writes the entire contents of aDes to the file.
|
|
|
1182 |
NB: this function is asynchronous and the request that it
|
|
|
1183 |
represents may not complete until some time after the call
|
|
|
1184 |
to the function has returned. It is important, therefore, that
|
|
|
1185 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
1186 |
been notified that the request is complete.
|
|
|
1187 |
|
|
|
1188 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
1189 |
otherwise one of the other system-wide error codes.
|
|
|
1190 |
*/
|
|
|
1191 |
{
|
|
|
1192 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2, MODULEUID, Session().Handle(), SubSessionHandle(), aDes.Length(), &aStatus);
|
|
|
1193 |
|
|
|
1194 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),I64LOW(KCurrentPosition64)),aStatus);
|
|
|
1195 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2Return, MODULEUID);
|
|
|
1196 |
}
|
|
|
1197 |
|
|
|
1198 |
|
|
|
1199 |
|
|
|
1200 |
|
|
|
1201 |
EFSRV_EXPORT_C TInt RFile::Write(const TDesC8& aDes,TInt aLength)
|
|
|
1202 |
/**
|
|
|
1203 |
Writes a portion of a descriptor to the file at the current offset within
|
|
|
1204 |
the file.
|
|
|
1205 |
|
|
|
1206 |
This is a synchronous function.
|
|
|
1207 |
|
|
|
1208 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1209 |
|
|
|
1210 |
@param aDes The descriptor from which binary data is written.
|
|
|
1211 |
@param aLength The number of bytes to be written from the descriptor.
|
|
|
1212 |
This must not be greater than the length of the descriptor.
|
|
|
1213 |
It must not be negative.
|
|
|
1214 |
|
|
|
1215 |
@return KErrNone if successful; KErrArgument if aLength is negative;
|
|
|
1216 |
otherwise one of the other system-wide error codes.
|
|
|
1217 |
|
|
|
1218 |
@panic FSCLIENT 27 in debug mode, if aLength is greater than the length
|
|
|
1219 |
of the descriptor aDes.
|
|
|
1220 |
*/
|
|
|
1221 |
{
|
|
|
1222 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1, MODULEUID, Session().Handle(), SubSessionHandle(), aLength);
|
|
|
1223 |
|
|
|
1224 |
__ASSERT_DEBUG(aDes.Length()>=aLength,Panic(EBadLength));
|
|
|
1225 |
TInt r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,I64LOW(KCurrentPosition64)));
|
|
|
1226 |
|
|
|
1227 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1Return, MODULEUID, r);
|
|
|
1228 |
return r;
|
|
|
1229 |
}
|
|
|
1230 |
|
|
|
1231 |
|
|
|
1232 |
|
|
|
1233 |
|
|
|
1234 |
EFSRV_EXPORT_C void RFile::Write(const TDesC8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
1235 |
/**
|
|
|
1236 |
Writes a portion of a descriptor to the file at the current offset
|
|
|
1237 |
within the file.
|
|
|
1238 |
|
|
|
1239 |
This is an asynchronous function.
|
|
|
1240 |
|
|
|
1241 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1242 |
|
|
|
1243 |
@param aDes The descriptor from which binary data is written.
|
|
|
1244 |
NB: this function is asynchronous and the request that it
|
|
|
1245 |
represents may not complete until some time after the call
|
|
|
1246 |
to the function has returned. It is important, therefore, that
|
|
|
1247 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
1248 |
been notified that the request is complete.
|
|
|
1249 |
|
|
|
1250 |
@param aLength The number of bytes to be written from the descriptor.
|
|
|
1251 |
This must not be greater than the length of the descriptor.
|
|
|
1252 |
It must not be negative.
|
|
|
1253 |
|
|
|
1254 |
@param aStatus Request status. On completion contains KErrNone if successful;
|
|
|
1255 |
KErrArgument if aLength is negative;
|
|
|
1256 |
otherwise one of the other system-wide error codes.
|
|
|
1257 |
|
|
|
1258 |
*/
|
|
|
1259 |
{
|
|
|
1260 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2, MODULEUID, Session().Handle(), SubSessionHandle(), aLength, &aStatus);
|
|
|
1261 |
|
|
|
1262 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,I64LOW(KCurrentPosition64)),aStatus);
|
|
|
1263 |
|
|
|
1264 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2Return, MODULEUID);
|
|
|
1265 |
}
|
|
|
1266 |
|
|
|
1267 |
|
|
|
1268 |
|
|
|
1269 |
|
|
|
1270 |
|
|
|
1271 |
EFSRV_EXPORT_C TInt RFile::Write(TInt aPos,const TDesC8& aDes)
|
|
|
1272 |
/**
|
|
|
1273 |
Writes to the file at the specified offset within the file
|
|
|
1274 |
|
|
|
1275 |
This is a synchronous function.
|
|
|
1276 |
|
|
|
1277 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1278 |
|
|
|
1279 |
@param aPos The offset from the start of the file at which the first
|
|
|
1280 |
byte is written.
|
|
|
1281 |
If a position beyond the end of the file is specified, then
|
|
|
1282 |
the write operation begins at the end of the file.
|
|
|
1283 |
If the position has been locked, then the write fails.
|
|
|
1284 |
|
|
|
1285 |
@param aDes The descriptor from which binary data is written. The function writes
|
|
|
1286 |
the entire contents of aDes to the file.
|
|
|
1287 |
|
|
|
1288 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1289 |
codes.
|
|
|
1290 |
|
|
|
1291 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1292 |
*/
|
|
|
1293 |
{
|
|
|
1294 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.Length());
|
|
|
1295 |
|
|
|
1296 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1297 |
TInt r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),aPos));
|
|
|
1298 |
|
|
|
1299 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3Return, MODULEUID, r);
|
|
|
1300 |
return r;
|
|
|
1301 |
}
|
|
|
1302 |
|
|
|
1303 |
|
|
|
1304 |
|
|
|
1305 |
|
|
|
1306 |
EFSRV_EXPORT_C void RFile::Write(TInt aPos,const TDesC8& aDes,TRequestStatus& aStatus)
|
|
|
1307 |
/**
|
|
|
1308 |
Writes to the file at the specified offset within the file
|
|
|
1309 |
|
|
|
1310 |
This is an asynchronous function.
|
|
|
1311 |
|
|
|
1312 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1313 |
|
|
|
1314 |
@param aPos The offset from the start of the file at which the first
|
|
|
1315 |
byte is written.
|
|
|
1316 |
If a position beyond the end of the file is specified, then
|
|
|
1317 |
the write operation begins at the end of the file.
|
|
|
1318 |
If the position has been locked, then the write fails.
|
|
|
1319 |
|
|
|
1320 |
@param aDes The descriptor from which binary data is written. The function
|
|
|
1321 |
writes the entire contents of aDes to the file.
|
|
|
1322 |
NB: this function is asynchronous and the request that it
|
|
|
1323 |
represents may not complete until some time after the call
|
|
|
1324 |
to the function has returned. It is important, therefore, that
|
|
|
1325 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
1326 |
been notified that the request is complete.
|
|
|
1327 |
|
|
|
1328 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
1329 |
otherwise one of the other system-wide error codes.
|
|
|
1330 |
|
|
|
1331 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1332 |
*/
|
|
|
1333 |
{
|
|
|
1334 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.Length(), &aStatus);
|
|
|
1335 |
|
|
|
1336 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1337 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),aPos),aStatus);
|
|
|
1338 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4Return, MODULEUID);
|
|
|
1339 |
}
|
|
|
1340 |
|
|
|
1341 |
|
|
|
1342 |
|
|
|
1343 |
|
|
|
1344 |
EFSRV_EXPORT_C TInt RFile::Write(TInt aPos,const TDesC8& aDes,TInt aLength)
|
|
|
1345 |
/**
|
|
|
1346 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
1347 |
|
|
|
1348 |
This is a synchronous function.
|
|
|
1349 |
|
|
|
1350 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1351 |
|
|
|
1352 |
@param aPos The offset from the start of the file at which the first
|
|
|
1353 |
byte is written.
|
|
|
1354 |
If a position beyond the end of the file is specified, then
|
|
|
1355 |
the write operation begins at the end of the file.
|
|
|
1356 |
If the position has been locked, then the write fails.
|
|
|
1357 |
|
|
|
1358 |
@param aDes The descriptor from which binary data is written.
|
|
|
1359 |
@param aLength The number of bytes to be written from aDes .
|
|
|
1360 |
It must not be negative.
|
|
|
1361 |
|
|
|
1362 |
@return KErrNone if successful; KErrArgument if aLength is negative;
|
|
|
1363 |
otherwise one of the other system-wide error codes.
|
|
|
1364 |
|
|
|
1365 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1366 |
*/
|
|
|
1367 |
{
|
|
|
1368 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1, MODULEUID, Session().Handle(), SubSessionHandle(), aLength);
|
|
|
1369 |
|
|
|
1370 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1371 |
TInt r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,aPos));
|
|
|
1372 |
|
|
|
1373 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1Return, MODULEUID, r);
|
|
|
1374 |
return r;
|
|
|
1375 |
}
|
|
|
1376 |
|
|
|
1377 |
|
|
|
1378 |
|
|
|
1379 |
|
|
|
1380 |
EFSRV_EXPORT_C void RFile::Write(TInt aPos,const TDesC8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
1381 |
/**
|
|
|
1382 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
1383 |
|
|
|
1384 |
This is an asynchronous function.
|
|
|
1385 |
|
|
|
1386 |
NB Attempting to extend the file to 2 GByte or greater will fail with KErrTooBig
|
|
|
1387 |
|
|
|
1388 |
@param aPos The offset from the start of the file at which the first
|
|
|
1389 |
byte is written.
|
|
|
1390 |
If a position beyond the end of the file is specified, then
|
|
|
1391 |
the write operation begins at the end of the file.
|
|
|
1392 |
If the position has been locked, then the write fails.
|
|
|
1393 |
|
|
|
1394 |
@param aDes The descriptor from which binary data is written.
|
|
|
1395 |
NB: this function is asynchronous and the request that it
|
|
|
1396 |
represents may not complete until some time after the call
|
|
|
1397 |
to the function has returned. It is important, therefore, that
|
|
|
1398 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
1399 |
been notified that the request is complete.
|
|
|
1400 |
|
|
|
1401 |
@param aLength The number of bytes to be written from aDes.
|
|
|
1402 |
It must not be negative.
|
|
|
1403 |
|
|
|
1404 |
@param aStatus Request status. On completion contains KErrNone if successful;
|
|
|
1405 |
KErrArgument if aLength is negative;
|
|
|
1406 |
otherwise one of the other system-wide error codes.
|
|
|
1407 |
|
|
|
1408 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1409 |
*/
|
|
|
1410 |
{
|
|
|
1411 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength, &aStatus);
|
|
|
1412 |
|
|
|
1413 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1414 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,aPos),aStatus);
|
|
|
1415 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2Return, MODULEUID);
|
|
|
1416 |
}
|
|
|
1417 |
|
|
|
1418 |
|
|
|
1419 |
|
|
|
1420 |
|
|
|
1421 |
EFSRV_EXPORT_C TInt RFile::Lock(TInt aPos,TInt aLength) const
|
|
|
1422 |
/**
|
|
|
1423 |
Locks a region within the file as defined by a range of bytes.
|
|
|
1424 |
|
|
|
1425 |
This ensures that those bytes are accessible
|
|
|
1426 |
only through the RFile object which claims the lock. To re-allow access by
|
|
|
1427 |
other programs to the locked region, it must either be unlocked or the file
|
|
|
1428 |
closed. Locking can be used to synchronize operations on a file when more
|
|
|
1429 |
than one program has access to the file in EFileShareAny mode.
|
|
|
1430 |
|
|
|
1431 |
More than one distinct region of a file can be locked, but an error is returned
|
|
|
1432 |
if more than one lock is placed on the same region. Different RFile objects
|
|
|
1433 |
can lock different parts of the same file as long as the file is opened in
|
|
|
1434 |
EFileShareAny mode. The locked region may extend beyond the end of a file;
|
|
|
1435 |
this prevents the file from being extended by other programs.
|
|
|
1436 |
|
|
|
1437 |
@param aPos Position in file from which to lock; this is the offset from
|
|
|
1438 |
the beginning of the file.
|
|
|
1439 |
@param aLength Number of bytes to lock.
|
|
|
1440 |
|
|
|
1441 |
@return KErrNone if successful; KErrArgument if aPos+aLength>2G-1 boundary;
|
|
|
1442 |
otherwise one of the other system-wide error codes.
|
|
|
1443 |
|
|
|
1444 |
@panic FSCLIENT 17 if aLength is not greater than zero,
|
|
|
1445 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1446 |
|
|
|
1447 |
*/
|
|
|
1448 |
{
|
|
|
1449 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileLock, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength);
|
|
|
1450 |
|
|
|
1451 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1452 |
|
|
|
1453 |
TInt r = SendReceive(EFsFileLock,TIpcArgs(aPos,aLength));
|
|
|
1454 |
|
|
|
1455 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileLockReturn, MODULEUID, r);
|
|
|
1456 |
return r;
|
|
|
1457 |
}
|
|
|
1458 |
|
|
|
1459 |
|
|
|
1460 |
|
|
|
1461 |
|
|
|
1462 |
EFSRV_EXPORT_C TInt RFile::UnLock(TInt aPos,TInt aLength) const
|
|
|
1463 |
/**
|
|
|
1464 |
Unlocks a region within the file as defined by a range of bytes.
|
|
|
1465 |
|
|
|
1466 |
A lock can only be removed by the RFile object which claimed the lock.
|
|
|
1467 |
|
|
|
1468 |
A portion of a locked region cannot be unlocked. The entire locked region
|
|
|
1469 |
must be unlocked otherwise an error is returned. If any byte within
|
|
|
1470 |
the specified range of bytes to unlock is not locked, an error is returned.
|
|
|
1471 |
|
|
|
1472 |
@param aPos Position in file from which to unlock; this is the offset from
|
|
|
1473 |
the beginning of the file.
|
|
|
1474 |
@param aLength Number of bytes to unlock.
|
|
|
1475 |
|
|
|
1476 |
@return KErrNone if successful; KErrArgument if aPos+aLength>2G-1 boundary;
|
|
|
1477 |
otherwise one of the other system-wide error codes.
|
|
|
1478 |
|
|
|
1479 |
@panic FSCLIENT 18 if aLength is not greater than zero,
|
|
|
1480 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
1481 |
*/
|
|
|
1482 |
{
|
|
|
1483 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileUnLock, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength);
|
|
|
1484 |
|
|
|
1485 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
1486 |
TInt r = SendReceive(EFsFileUnLock,TIpcArgs(aPos,aLength));
|
|
|
1487 |
|
|
|
1488 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileUnLockReturn, MODULEUID, r);
|
|
|
1489 |
return r;
|
|
|
1490 |
}
|
|
|
1491 |
|
|
|
1492 |
|
|
|
1493 |
|
|
|
1494 |
|
|
|
1495 |
EFSRV_EXPORT_C TInt RFile::Seek(TSeek aMode,TInt& aPos) const
|
|
|
1496 |
/**
|
|
|
1497 |
Sets the the current file position.
|
|
|
1498 |
|
|
|
1499 |
The function can also be used to get the current file
|
|
|
1500 |
position without changing it. The file position is the position at which
|
|
|
1501 |
reading and writing takes place. The start of the file is position zero.
|
|
|
1502 |
|
|
|
1503 |
To retrieve the current file position without changing it, specify ESeekCurrent
|
|
|
1504 |
for the seek mode, and zero for the offset.
|
|
|
1505 |
|
|
|
1506 |
If the seek mode is ESeekStart, then:
|
|
|
1507 |
|
|
|
1508 |
1. the function does not modify the aPos argument,
|
|
|
1509 |
|
|
|
1510 |
2. the function returns an error if the offset specified is negative.
|
|
|
1511 |
|
|
|
1512 |
If the seek mode is ESeekAddress, an error is returned if:
|
|
|
1513 |
|
|
|
1514 |
1. the file is not in ROM,
|
|
|
1515 |
|
|
|
1516 |
2. the offset specified is greater than the size of the file.
|
|
|
1517 |
|
|
|
1518 |
@param aMode Seek mode. Controls the destination of the seek operation.
|
|
|
1519 |
@param aPos Offset from location specified in aMode. Can be negative.
|
|
|
1520 |
On return contains the new file position.
|
|
|
1521 |
If the seek mode is either ESeekCurrent or ESeekEnd and the offset
|
|
|
1522 |
specifies a position before the start of the file
|
|
|
1523 |
or beyond the end of the file, then on return, aPos is set to
|
|
|
1524 |
the new file position (either the start or the end of the file).
|
|
|
1525 |
If the seek mode is ESeekAddress, aPos returns the address of
|
|
|
1526 |
the byte at the specified offset within the file.
|
|
|
1527 |
|
|
|
1528 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1529 |
codes.
|
|
|
1530 |
*/
|
|
|
1531 |
{
|
|
|
1532 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileSeek, MODULEUID, Session().Handle(), SubSessionHandle(), aMode, aPos, 0);
|
|
|
1533 |
|
|
|
1534 |
TInt64 newPos = aPos;
|
|
|
1535 |
TPckg<TInt64> pkNewPos(newPos);
|
|
|
1536 |
TInt r = SendReceive(EFsFileSeek|KIpcArgSlot2Desc,TIpcArgs(aPos,aMode,&pkNewPos));
|
|
|
1537 |
if(KErrNone == r)
|
|
|
1538 |
aPos = I64LOW(newPos);
|
|
|
1539 |
|
|
|
1540 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSeekReturn, MODULEUID, r);
|
|
|
1541 |
return r;
|
|
|
1542 |
}
|
|
|
1543 |
|
|
|
1544 |
|
|
|
1545 |
|
|
|
1546 |
|
|
|
1547 |
EFSRV_EXPORT_C TInt RFile::Flush()
|
|
|
1548 |
/**
|
|
|
1549 |
Commits data to the storage device and flushes internal buffers without closing
|
|
|
1550 |
the file.
|
|
|
1551 |
|
|
|
1552 |
Although RFile::Close() also flushes internal buffers, it is often useful
|
|
|
1553 |
to call Flush() before a file is closed. This is because Close() returns no
|
|
|
1554 |
error information, so there is no way of telling whether the final data was
|
|
|
1555 |
written to the file successfully or not. Once data has been flushed, Close()
|
|
|
1556 |
is effectively a no-operation.
|
|
|
1557 |
|
|
|
1558 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1559 |
codes.
|
|
|
1560 |
*/
|
|
|
1561 |
{
|
|
|
1562 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileFlush, MODULEUID, Session().Handle(), SubSessionHandle(), NULL);
|
|
|
1563 |
|
|
|
1564 |
TInt r = RSubSessionBase::SendReceive(EFsFileFlush);
|
|
|
1565 |
|
|
|
1566 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileFlushReturn, MODULEUID, r);
|
|
|
1567 |
return r;
|
|
|
1568 |
}
|
|
|
1569 |
|
|
|
1570 |
|
|
|
1571 |
|
|
|
1572 |
|
|
|
1573 |
EFSRV_EXPORT_C void RFile::Flush(TRequestStatus& aStatus)
|
|
|
1574 |
/**
|
|
|
1575 |
Commits data to the storage device and flushes internal buffers without closing
|
|
|
1576 |
the file.
|
|
|
1577 |
|
|
|
1578 |
Although RFile::Close() also flushes internal buffers, it is often useful
|
|
|
1579 |
to call Flush() before a file is closed. This is because Close() returns no
|
|
|
1580 |
error information, so there is no way of telling whether the final data was
|
|
|
1581 |
written to the file successfully or not. Once data has been flushed, Close()
|
|
|
1582 |
is effectively a no-operation.
|
|
|
1583 |
|
|
|
1584 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
1585 |
otherwise one of the other system-wide error codes.
|
|
|
1586 |
*/
|
|
|
1587 |
{
|
|
|
1588 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileFlush, MODULEUID, Session().Handle(), SubSessionHandle(), &aStatus);
|
|
|
1589 |
|
|
|
1590 |
RSubSessionBase::SendReceive(EFsFileFlush, aStatus);
|
|
|
1591 |
|
|
|
1592 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileFlushReturn, MODULEUID);
|
|
|
1593 |
}
|
|
|
1594 |
|
|
|
1595 |
|
|
|
1596 |
|
|
|
1597 |
|
|
|
1598 |
EFSRV_EXPORT_C TInt RFile::Size(TInt& aSize) const
|
|
|
1599 |
/**
|
|
|
1600 |
Gets the current file size.
|
|
|
1601 |
|
|
|
1602 |
@param aSize On return, the size of the file in bytes.
|
|
|
1603 |
|
|
|
1604 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1605 |
codes.
|
|
|
1606 |
*/
|
|
|
1607 |
{
|
|
|
1608 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileSize, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
1609 |
|
|
|
1610 |
TInt64 size = aSize;
|
|
|
1611 |
TPckg<TInt64> pkSize(size);
|
|
|
1612 |
TInt r = SendReceive(EFsFileSize|KIpcArgSlot0Desc,TIpcArgs(&pkSize));
|
|
|
1613 |
if(KErrNone != r)
|
|
|
1614 |
return r;
|
|
|
1615 |
aSize = I64LOW(size);
|
|
|
1616 |
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
|
|
|
1617 |
if (size > KMaxTInt)
|
|
|
1618 |
return (KErrTooBig);
|
|
|
1619 |
#endif
|
|
|
1620 |
|
|
|
1621 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileSizeReturn, MODULEUID, r, aSize);
|
|
|
1622 |
return r;
|
|
|
1623 |
}
|
|
|
1624 |
|
|
|
1625 |
|
|
|
1626 |
|
|
|
1627 |
|
|
|
1628 |
EFSRV_EXPORT_C TInt RFile::SetSize(TInt aSize)
|
|
|
1629 |
/**
|
|
|
1630 |
Sets the file size.
|
|
|
1631 |
|
|
|
1632 |
If the size of the file is reduced, data may be lost from
|
|
|
1633 |
the end of the file.
|
|
|
1634 |
|
|
|
1635 |
Note:
|
|
|
1636 |
|
|
|
1637 |
1. The current file position remains unchanged unless SetSize() reduces the size
|
|
|
1638 |
of the file in such a way that the current file position is now beyond
|
|
|
1639 |
the end of the file. In this case, the current file position is set to
|
|
|
1640 |
the end of file.
|
|
|
1641 |
|
|
|
1642 |
2. If the file was not opened for writing, an error is returned.
|
|
|
1643 |
|
|
|
1644 |
@param aSize The new size of the file, in bytes. This value must not be negative, otherwise the function raises a panic.
|
|
|
1645 |
|
|
|
1646 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1647 |
codes.
|
|
|
1648 |
|
|
|
1649 |
@panic FSCLIENT 20 If aSize is negative.
|
|
|
1650 |
|
|
|
1651 |
*/
|
|
|
1652 |
{
|
|
|
1653 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileSetSize, MODULEUID, Session().Handle(), SubSessionHandle(), aSize, 0);
|
|
|
1654 |
|
|
|
1655 |
TInt r = SendReceive(EFsFileSetSize,TIpcArgs(aSize));
|
|
|
1656 |
|
|
|
1657 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSetSizeReturn, MODULEUID, r);
|
|
|
1658 |
return r;
|
|
|
1659 |
}
|
|
|
1660 |
|
|
|
1661 |
|
|
|
1662 |
|
|
|
1663 |
|
|
|
1664 |
EFSRV_EXPORT_C TInt RFile::Att(TUint& aVal) const
|
|
|
1665 |
/**
|
|
|
1666 |
Gets the file's attributes.
|
|
|
1667 |
|
|
|
1668 |
@param aVal A bitmask which, on return, contains the file’s attributes.
|
|
|
1669 |
For more information, see KEntryAttNormal and the other
|
|
|
1670 |
file/directory attributes.
|
|
|
1671 |
|
|
|
1672 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1673 |
codes.
|
|
|
1674 |
|
|
|
1675 |
@see KEntryAttNormal
|
|
|
1676 |
*/
|
|
|
1677 |
{
|
|
|
1678 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileAtt, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
1679 |
|
|
|
1680 |
TPtr8 a((TUint8*)&aVal,sizeof(TUint));
|
|
|
1681 |
|
|
|
1682 |
TInt r = SendReceive(EFsFileAtt,TIpcArgs(&a));
|
|
|
1683 |
|
|
|
1684 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileAttReturn, MODULEUID, r, aVal);
|
|
|
1685 |
return r;
|
|
|
1686 |
}
|
|
|
1687 |
|
|
|
1688 |
|
|
|
1689 |
|
|
|
1690 |
|
|
|
1691 |
EFSRV_EXPORT_C TInt RFile::SetAtt(TUint aSetAttMask,TUint aClearAttMask)
|
|
|
1692 |
/**
|
|
|
1693 |
Sets or clears file attributes using two bitmasks.
|
|
|
1694 |
|
|
|
1695 |
The first mask controls which attributes are set.
|
|
|
1696 |
The second controls which attributes are cleared.
|
|
|
1697 |
|
|
|
1698 |
Notes:
|
|
|
1699 |
|
|
|
1700 |
1. The file must have been opened for writing, or an error is returned.
|
|
|
1701 |
|
|
|
1702 |
2. A panic is raised if any attribute is specified in both bitmasks.
|
|
|
1703 |
|
|
|
1704 |
3. An attempt to set or clear the KEntryAttDir, KEntryAttVolume or KEntryAttRemote
|
|
|
1705 |
attributes have no effect.
|
|
|
1706 |
|
|
|
1707 |
4. The new attribute values take effect when the file is flushed or closed (which
|
|
|
1708 |
implies a flush).
|
|
|
1709 |
|
|
|
1710 |
@param aSetAttMask A bitmask indicating the file attributes to be set
|
|
|
1711 |
@param aClearAttMask A bitmask indicating the attributes to be cleared. For
|
|
|
1712 |
more information see KEntryAttNormal, and the other
|
|
|
1713 |
file/directory attributes.
|
|
|
1714 |
|
|
|
1715 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1716 |
codes.
|
|
|
1717 |
|
|
|
1718 |
@panic FSCLIENT 21 if the same attribute bit is set in both bitmasks.
|
|
|
1719 |
*/
|
|
|
1720 |
{
|
|
|
1721 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileSetAtt, MODULEUID, Session().Handle(), SubSessionHandle(), aSetAttMask, aClearAttMask);
|
|
|
1722 |
|
|
|
1723 |
__ASSERT_ALWAYS((aSetAttMask&aClearAttMask)==0,Panic(EAttributesIllegal));
|
|
|
1724 |
|
|
|
1725 |
TInt r = SendReceive(EFsFileSetAtt,TIpcArgs(aSetAttMask,aClearAttMask));
|
|
|
1726 |
|
|
|
1727 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSetAttReturn, MODULEUID, r);
|
|
|
1728 |
return r;
|
|
|
1729 |
}
|
|
|
1730 |
|
|
|
1731 |
|
|
|
1732 |
|
|
|
1733 |
|
|
|
1734 |
EFSRV_EXPORT_C TInt RFile::Modified(TTime& aTime) const
|
|
|
1735 |
/**
|
|
|
1736 |
Gets local date and time the file was last modified, in universal time.
|
|
|
1737 |
|
|
|
1738 |
@param aTime On return, contains the date and time the file was last modified in UTC.
|
|
|
1739 |
|
|
|
1740 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1741 |
codes.
|
|
|
1742 |
*/
|
|
|
1743 |
{
|
|
|
1744 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileModified, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
1745 |
|
|
|
1746 |
TPtr8 t((TUint8*)&aTime,sizeof(TTime));
|
|
|
1747 |
TInt r = SendReceive(EFsFileModified,TIpcArgs(&t));
|
|
|
1748 |
|
|
|
1749 |
TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileModifiedReturn, MODULEUID, r, I64LOW(aTime.Int64()), I64HIGH(aTime.Int64()));
|
|
|
1750 |
return r;
|
|
|
1751 |
}
|
|
|
1752 |
|
|
|
1753 |
|
|
|
1754 |
|
|
|
1755 |
|
|
|
1756 |
EFSRV_EXPORT_C TInt RFile::SetModified(const TTime& aTime)
|
|
|
1757 |
/**
|
|
|
1758 |
Sets the date and time the file was last modified. UTC date and time should be used.
|
|
|
1759 |
|
|
|
1760 |
Notes:
|
|
|
1761 |
|
|
|
1762 |
1. The file must have been opened for writing, or an error is returned.
|
|
|
1763 |
|
|
|
1764 |
2. The new modified time takes effect when the file is flushed or closed (which
|
|
|
1765 |
implies a flush).
|
|
|
1766 |
|
|
|
1767 |
@param aTime The new date and time the file was last modified, in universal time.
|
|
|
1768 |
|
|
|
1769 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1770 |
codes.
|
|
|
1771 |
*/
|
|
|
1772 |
{
|
|
|
1773 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileSetModified, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aTime.Int64()), I64HIGH(aTime.Int64()));
|
|
|
1774 |
|
|
|
1775 |
TPtrC8 t((TUint8*)&aTime,sizeof(TTime));
|
|
|
1776 |
TInt r = SendReceive(EFsFileSetModified,TIpcArgs(&t));
|
|
|
1777 |
|
|
|
1778 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSetModifiedReturn, MODULEUID, r);
|
|
|
1779 |
return r;
|
|
|
1780 |
}
|
|
|
1781 |
|
|
|
1782 |
|
|
|
1783 |
|
|
|
1784 |
|
|
|
1785 |
EFSRV_EXPORT_C TInt RFile::Set(const TTime& aTime,TUint aMask,TUint aVal)
|
|
|
1786 |
/**
|
|
|
1787 |
Sets the file’s attributes, and the date and time it was last modified.
|
|
|
1788 |
|
|
|
1789 |
It combines the functionality of SetAtt() and SetModified()
|
|
|
1790 |
|
|
|
1791 |
An attempt to set or clear the KEntryAttDir, KEntryAttVolume or KEntryAttRemote
|
|
|
1792 |
attributes have no effect.
|
|
|
1793 |
|
|
|
1794 |
@param aTime The new date and time the file was last modified. UTC date and time should be used.
|
|
|
1795 |
@param aMask A bitmask indicating the file attributes to be set
|
|
|
1796 |
@param aVal A bitmask indicating the attributes to be cleared. For
|
|
|
1797 |
more information see KEntryAttNormal, and the other
|
|
|
1798 |
file/directory attributes.
|
|
|
1799 |
|
|
|
1800 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1801 |
codes.
|
|
|
1802 |
|
|
|
1803 |
@panic FSCLIENT 21 if the same attribute bit is set in both bitmasks.
|
|
|
1804 |
|
|
|
1805 |
@see RFile::SetModified
|
|
|
1806 |
@see RFile::SetAtt
|
|
|
1807 |
*/
|
|
|
1808 |
{
|
|
|
1809 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileSet, MODULEUID,
|
|
|
1810 |
Session().Handle(), SubSessionHandle(), I64LOW(aTime.Int64()), I64HIGH(aTime.Int64()), aMask, aVal);
|
|
|
1811 |
|
|
|
1812 |
__ASSERT_ALWAYS((aVal&aMask)==0,Panic(EAttributesIllegal));
|
|
|
1813 |
TPtrC8 t((TUint8*)&aTime,sizeof(TTime));
|
|
|
1814 |
TInt r = SendReceive(EFsFileSet,TIpcArgs(&t,aMask,aVal));
|
|
|
1815 |
|
|
|
1816 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSetReturn, MODULEUID, r);
|
|
|
1817 |
return r;
|
|
|
1818 |
}
|
|
|
1819 |
|
|
|
1820 |
|
|
|
1821 |
|
|
|
1822 |
|
|
|
1823 |
EFSRV_EXPORT_C TInt RFile::ChangeMode(TFileMode aNewMode)
|
|
|
1824 |
/**
|
|
|
1825 |
Switches an open file's access mode between EFileShareExclusive and EFileShareReadersOnly.
|
|
|
1826 |
|
|
|
1827 |
This allows or disallows read-only access without having to close and re-open the file.
|
|
|
1828 |
|
|
|
1829 |
@param aNewMode The new access mode.
|
|
|
1830 |
|
|
|
1831 |
@return KErrNone, if successful;
|
|
|
1832 |
KErrArgument, if aNewMode has any value other than the two specified;
|
|
|
1833 |
KErrAccessDenied, if:
|
|
|
1834 |
a) the function is called when the current file share
|
|
|
1835 |
mode is EFileShareAny;
|
|
|
1836 |
b) the file has multiple readers, and an attempt is made
|
|
|
1837 |
to change the share mode to EFileShareExclusive;
|
|
|
1838 |
c) the file has been opened for writing in EFileShareExclusive mode, and an
|
|
|
1839 |
attempt is made to change the access mode to EFileShareReadersOnly.
|
|
|
1840 |
|
|
|
1841 |
@capability Dependent If the path starts with /Resource then capability DiskAdmin is required
|
|
|
1842 |
|
|
|
1843 |
*/
|
|
|
1844 |
{
|
|
|
1845 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileChangeMode, MODULEUID, Session().Handle(), SubSessionHandle(), aNewMode);
|
|
|
1846 |
|
|
|
1847 |
if (aNewMode!=EFileShareExclusive && aNewMode!=EFileShareReadersOnly)
|
|
|
1848 |
return(KErrArgument);
|
|
|
1849 |
TInt r = SendReceive(EFsFileChangeMode,TIpcArgs(aNewMode));
|
|
|
1850 |
|
|
|
1851 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileChangeModeReturn, MODULEUID, r);
|
|
|
1852 |
return r;
|
|
|
1853 |
}
|
|
|
1854 |
|
|
|
1855 |
|
|
|
1856 |
|
|
|
1857 |
|
|
|
1858 |
EFSRV_EXPORT_C TInt RFile::Rename(const TDesC& aNewName)
|
|
|
1859 |
/**
|
|
|
1860 |
Renames a file.
|
|
|
1861 |
|
|
|
1862 |
If aNewName specifies a different directory to the one in which
|
|
|
1863 |
the file is currently located, then the file is moved.
|
|
|
1864 |
|
|
|
1865 |
No other process may have access to the file, that is, the file must have
|
|
|
1866 |
been opened in EFileShareExclusive share mode, or an error is returned. The
|
|
|
1867 |
file must have been opened for writing (using EFileWrite access mode). An
|
|
|
1868 |
error is returned if a file with the new filename already exists in the target
|
|
|
1869 |
directory.
|
|
|
1870 |
|
|
|
1871 |
The file or directory may not be moved to another device by this means, either
|
|
|
1872 |
explicitly (by another drive specified in the name) or implicitly (because
|
|
|
1873 |
the directory has been mapped to another device with RFs::SetSubst()).
|
|
|
1874 |
|
|
|
1875 |
Note that the function builds up the new file specification by using all
|
|
|
1876 |
of the path components specified
|
|
|
1877 |
in aNewName (directory path, filename and extension),
|
|
|
1878 |
then adding any missing components from the current file specification, and
|
|
|
1879 |
finally adding any missing components from the session path. A consequence
|
|
|
1880 |
of this is that you cannot rename a file to remove its extension. An alternative
|
|
|
1881 |
to this function is RFs::Rename() which renames the file using the new name
|
|
|
1882 |
as provided.
|
|
|
1883 |
|
|
|
1884 |
@param aNewName The new file name and/or directory path. No part may contain
|
|
|
1885 |
wildcard characters or an error is returned.
|
|
|
1886 |
|
|
|
1887 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
1888 |
codes.
|
|
|
1889 |
|
|
|
1890 |
@capability Dependent If aNewName starts with /Sys then capability Tcb is required
|
|
|
1891 |
@capability Dependent If aNewName starts with /Resource then capability Tcb is required
|
|
|
1892 |
@capability Dependent If aNewName starts with /Private and does not match this process'
|
|
|
1893 |
SID then AllFiles capability is required.
|
|
|
1894 |
|
|
|
1895 |
*/
|
|
|
1896 |
{
|
|
|
1897 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileRename, MODULEUID, Session().Handle(), SubSessionHandle(), aNewName);
|
|
|
1898 |
|
|
|
1899 |
TInt r = SendReceive(EFsFileRename,TIpcArgs(&aNewName));
|
|
|
1900 |
|
|
|
1901 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileRenameReturn, MODULEUID, r);
|
|
|
1902 |
return r;
|
|
|
1903 |
}
|
|
|
1904 |
|
|
|
1905 |
|
|
|
1906 |
|
|
|
1907 |
|
|
|
1908 |
EFSRV_EXPORT_C TInt RFile::Drive(TInt &aDriveNumber, TDriveInfo &aDriveInfo) const
|
|
|
1909 |
/**
|
|
|
1910 |
Gets information about the drive on which this file resides.
|
|
|
1911 |
|
|
|
1912 |
@param aDriveNumber On return, the drive number.
|
|
|
1913 |
|
|
|
1914 |
@param aDriveInfo On return, contains information describing the drive
|
|
|
1915 |
and the medium mounted on it. The value of TDriveInfo::iType
|
|
|
1916 |
shows whether the drive contains media.
|
|
|
1917 |
|
|
|
1918 |
@return KErrNone, if successful, otherwise one of the other
|
|
|
1919 |
system-wide error codes
|
|
|
1920 |
|
|
|
1921 |
@see RFs::Drive
|
|
|
1922 |
*/
|
|
|
1923 |
{
|
|
|
1924 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileDrive, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
1925 |
|
|
|
1926 |
TPckg<TInt> pki(aDriveNumber);
|
|
|
1927 |
TPckg<TDriveInfo> pkdi(aDriveInfo);
|
|
|
1928 |
TInt r = SendReceive(EFsFileDrive,TIpcArgs(&pki,&pkdi));
|
|
|
1929 |
|
|
|
1930 |
TRACERET4(UTF::EBorder, UTraceModuleEfsrv::EFileDriveReturn, MODULEUID, r, aDriveInfo.iDriveAtt, aDriveInfo.iMediaAtt, aDriveInfo.iType);
|
|
|
1931 |
return r;
|
|
|
1932 |
}
|
|
|
1933 |
|
|
|
1934 |
|
|
|
1935 |
TInt RFile::Clamp(RFileClamp& aHandle)
|
|
|
1936 |
/**
|
|
|
1937 |
Instructs the File Server that the file is not to be modified on storage media.
|
|
|
1938 |
|
|
|
1939 |
@param aHandle On return, a handle to the file.
|
|
|
1940 |
|
|
|
1941 |
@return KErrNone, if successful, otherwise one of the other
|
|
|
1942 |
system-wide error codes
|
|
|
1943 |
|
|
|
1944 |
@see RFs::Unclamp
|
|
|
1945 |
*/
|
|
|
1946 |
{
|
|
|
1947 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileClamp, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
1948 |
|
|
|
1949 |
TPckg<RFileClamp> pkHandle(aHandle);
|
|
|
1950 |
TInt r = SendReceive(EFsFileClamp,TIpcArgs(& pkHandle));
|
|
|
1951 |
|
|
|
1952 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileClampReturn, MODULEUID, r);
|
|
|
1953 |
return r;
|
|
|
1954 |
}
|
|
|
1955 |
|
|
|
1956 |
/**
|
|
|
1957 |
Fetches the Block Map of a file. Each file in the file system will consist of
|
|
|
1958 |
a number of groups of blocks. Each group represents a number of contiguous blocks.
|
|
|
1959 |
Such a group is represented by the TBlockMapEntry class. The full Block Map representing
|
|
|
1960 |
the file may be determined by repeatedly calling RFile::BlockMap until KErrCompletion is
|
|
|
1961 |
returned.
|
|
|
1962 |
|
|
|
1963 |
Note:
|
|
|
1964 |
|
|
|
1965 |
1. If the Block Map for the whole file is not required, then a start and end position
|
|
|
1966 |
for a section of the file can be specified. Both of these parameters specify offsets
|
|
|
1967 |
from the start of the file in bytes.
|
|
|
1968 |
|
|
|
1969 |
@param aInfo A structure describing a group of block maps.
|
|
|
1970 |
|
|
|
1971 |
@param aStartPos A start position for a desired section of the file.
|
|
|
1972 |
|
|
|
1973 |
@param aEndPos An end position for a desired section of the file. If not passed, then the end of the
|
|
|
1974 |
file is assumed.
|
|
|
1975 |
|
|
|
1976 |
@return KErrNone until the end of the file or the file section is successfully reached;
|
|
|
1977 |
KErrCompletion if the end of the file is reached;
|
|
|
1978 |
KErrNotSupported if the file system does not support Block Mapping or the media is either removable or not pageable.
|
|
|
1979 |
*/
|
|
|
1980 |
EFSRV_EXPORT_C TInt RFile::BlockMap(SBlockMapInfo& aInfo, TInt64& aStartPos, TInt64 aEndPos, TInt aBlockMapUsage) const
|
|
|
1981 |
{
|
|
|
1982 |
TRACE7(UTF::EBorder, UTraceModuleEfsrv::EFileBlockMap, MODULEUID,
|
|
|
1983 |
Session().Handle(), SubSessionHandle(), I64LOW(aStartPos), I64HIGH(aEndPos), I64LOW(aEndPos), I64HIGH(aEndPos), aBlockMapUsage);
|
|
|
1984 |
|
|
|
1985 |
SBlockMapArgs args;
|
|
|
1986 |
args.iStartPos = aStartPos;
|
|
|
1987 |
args.iEndPos = aEndPos;
|
|
|
1988 |
TPckg<SBlockMapInfo> pkInfo(aInfo);
|
|
|
1989 |
TPckg<SBlockMapArgs> pkArgs(args);
|
|
|
1990 |
TInt r = SendReceive(EFsBlockMap, TIpcArgs(&pkInfo, &pkArgs, aBlockMapUsage));
|
|
|
1991 |
if(r==KErrNone)
|
|
|
1992 |
aStartPos = args.iStartPos;
|
|
|
1993 |
|
|
|
1994 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileBlockMapReturn, MODULEUID, r);
|
|
|
1995 |
return r;
|
|
|
1996 |
}
|
|
|
1997 |
|
|
|
1998 |
|
|
|
1999 |
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
|
|
|
2000 |
/**
|
|
|
2001 |
Opens an existing file for reading or writing.
|
|
|
2002 |
|
|
|
2003 |
If the file does not already exist, an error is returned.
|
|
|
2004 |
|
|
|
2005 |
This is equivalent to calling RFile::Open except that this function
|
|
|
2006 |
can open files of size greater than 2GB - 1 also.
|
|
|
2007 |
|
|
|
2008 |
Notes:
|
|
|
2009 |
|
|
|
2010 |
1. To close the file, use Close()
|
|
|
2011 |
|
|
|
2012 |
2. Attempting to open a file with the read-only attribute using the EFileWrite
|
|
|
2013 |
access mode results in an error.
|
|
|
2014 |
|
|
|
2015 |
3. After a file has been opened, the current write position is set to the start
|
|
|
2016 |
of the file.
|
|
|
2017 |
If necessary, use RFile64::Seek() to move to a different position within
|
|
|
2018 |
the file.
|
|
|
2019 |
|
|
|
2020 |
4. It enables big file support to handle files whose size are greater then 2GB-1
|
|
|
2021 |
|
|
|
2022 |
@param aFs The file server session.
|
|
|
2023 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
2024 |
or directory), which are not specified, are taken from
|
|
|
2025 |
the session path.
|
|
|
2026 |
@param aMode The mode in which the file is opened. See TFileMode.
|
|
|
2027 |
|
|
|
2028 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2029 |
error codes.
|
|
|
2030 |
|
|
|
2031 |
@see TFileMode
|
|
|
2032 |
@see RFile::Open()
|
|
|
2033 |
|
|
|
2034 |
@capability Dependent If the path for aName is /Sys and aMode is neither
|
|
|
2035 |
EFileShareReadersOnly nor EFileRead then Tcb capability is required.
|
|
|
2036 |
@capability Dependent If the path for aName is /Sys and aMode is either
|
|
|
2037 |
EFileShareReadersOnly or EFileRead then Allfiles capability is required.
|
|
|
2038 |
@capability Dependent If the path for aName begins with /Private and does not match this process'
|
|
|
2039 |
SID then AllFiles capability is required.
|
|
|
2040 |
@capability Dependent If the path for aName begins with /Resource and aMode is neither
|
|
|
2041 |
EFileShareReadersOrWriters|EFileRead nor EFileShareReadersOnly
|
|
|
2042 |
nor EFileRead then Tcb capability is required.
|
|
|
2043 |
|
|
|
2044 |
*/
|
|
|
2045 |
EFSRV_EXPORT_C TInt RFile64::Open(RFs& aFs,const TDesC& aName,TUint aFileMode)
|
|
|
2046 |
{
|
|
|
2047 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileOpen, MODULEUID, aFs.Handle(), aFileMode, aName);
|
|
|
2048 |
|
|
|
2049 |
TInt r = CreateSubSession(aFs,EFsFileOpen,TIpcArgs(&aName,aFileMode|EFileBigFile));
|
|
|
2050 |
|
|
|
2051 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileOpenReturn, MODULEUID, r, SubSessionHandle());
|
|
|
2052 |
return r;
|
|
|
2053 |
}
|
|
|
2054 |
|
|
|
2055 |
/**
|
|
|
2056 |
Creates and opens a new file for writing.
|
|
|
2057 |
|
|
|
2058 |
If the file already exists, an error is returned.
|
|
|
2059 |
|
|
|
2060 |
If the resulting path does not exist, then the operation cannot proceed and
|
|
|
2061 |
the function returns an error code.
|
|
|
2062 |
|
|
|
2063 |
This is equivalent to calling RFile::Create except that the file created with
|
|
|
2064 |
this function can grow beyond 2GB - 1 also.
|
|
|
2065 |
|
|
|
2066 |
Notes:
|
|
|
2067 |
|
|
|
2068 |
1. To close the file, use Close()
|
|
|
2069 |
|
|
|
2070 |
2. It automatically sets the file's archive attribute.
|
|
|
2071 |
|
|
|
2072 |
3. It enables big file support to handle files whose size are greater then 2GB-1
|
|
|
2073 |
|
|
|
2074 |
|
|
|
2075 |
@param aFs The file server session.
|
|
|
2076 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
2077 |
or directory), which are not specified, are taken from
|
|
|
2078 |
the session path.
|
|
|
2079 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
2080 |
automatically set to EFileWrite. See TFileMode.
|
|
|
2081 |
|
|
|
2082 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2083 |
error codes.
|
|
|
2084 |
|
|
|
2085 |
@see RFile::Create()
|
|
|
2086 |
@see TFileMode
|
|
|
2087 |
|
|
|
2088 |
@capability Dependent If the path in aName starts with /Sys then capability Tcb is required
|
|
|
2089 |
@capability Dependent If the path in aName starts with /Resource then capability Tcb is required
|
|
|
2090 |
@capability Dependent If the path in aName starts with /Private and does not match this process'
|
|
|
2091 |
SID then AllFiles capability is required.
|
|
|
2092 |
|
|
|
2093 |
*/
|
|
|
2094 |
EFSRV_EXPORT_C TInt RFile64::Create(RFs& aFs,const TDesC& aName,TUint aFileMode)
|
|
|
2095 |
{
|
|
|
2096 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileCreate, MODULEUID, aFs.Handle(), aFileMode, aName);
|
|
|
2097 |
|
|
|
2098 |
TInt r = CreateSubSession(aFs,EFsFileCreate,TIpcArgs(&aName,aFileMode|EFileBigFile));
|
|
|
2099 |
|
|
|
2100 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileCreateReturn, MODULEUID, r, SubSessionHandle());
|
|
|
2101 |
return r;
|
|
|
2102 |
}
|
|
|
2103 |
|
|
|
2104 |
/**
|
|
|
2105 |
Opens a file for writing, replacing the content of any existing file of the
|
|
|
2106 |
same name if it exists, or creating a new file if it does not exist.
|
|
|
2107 |
|
|
|
2108 |
This is equivalent to calling RFile::Replace except that the file created or replaced
|
|
|
2109 |
with this function can grow beyond 2GB - 1 also.
|
|
|
2110 |
|
|
|
2111 |
|
|
|
2112 |
If the resulting path exists, then:
|
|
|
2113 |
|
|
|
2114 |
- the length of an existing file with the same filename is re-set to zero
|
|
|
2115 |
|
|
|
2116 |
- a new file is created, if no existing file with the same filename can be found.
|
|
|
2117 |
|
|
|
2118 |
If the resulting path does not exist, then the operation cannot proceed and
|
|
|
2119 |
the function returns an error code.
|
|
|
2120 |
|
|
|
2121 |
Notes:
|
|
|
2122 |
|
|
|
2123 |
- To close the file, use Close(), defined in the base class RFsBase.
|
|
|
2124 |
|
|
|
2125 |
- It automatically sets the file's archive attribute.
|
|
|
2126 |
|
|
|
2127 |
- It enables big file support to handle files whose size are greater then 2GB-1
|
|
|
2128 |
|
|
|
2129 |
|
|
|
2130 |
@param aFs The file server session.
|
|
|
2131 |
@param aName The name of the file. Any path components (i.e. drive letter
|
|
|
2132 |
or directory), which are not specified, are taken from
|
|
|
2133 |
the session path.
|
|
|
2134 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
2135 |
automatically set to EFileWrite. See TFileMode.
|
|
|
2136 |
|
|
|
2137 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2138 |
error codes.
|
|
|
2139 |
|
|
|
2140 |
@see TFileMode
|
|
|
2141 |
@see RFile::Replace()
|
|
|
2142 |
|
|
|
2143 |
@capability Dependent If the path in aName starts with /Sys then capability Tcb is required
|
|
|
2144 |
@capability Dependent If the path in aName starts with /Resource then capability Tcb is required
|
|
|
2145 |
@capability Dependent If the path in aName starts with /Private and does not match this process'
|
|
|
2146 |
SID then AllFiles capability is required.
|
|
|
2147 |
|
|
|
2148 |
*/
|
|
|
2149 |
EFSRV_EXPORT_C TInt RFile64::Replace(RFs& aFs,const TDesC& aName,TUint aFileMode)
|
|
|
2150 |
{
|
|
|
2151 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileReplace, MODULEUID, aFs.Handle(), aFileMode, aName);
|
|
|
2152 |
|
|
|
2153 |
TInt r = CreateSubSession(aFs,EFsFileReplace,TIpcArgs(&aName,aFileMode|EFileBigFile));
|
|
|
2154 |
|
|
|
2155 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileReplaceReturn, MODULEUID, r, SubSessionHandle());
|
|
|
2156 |
return r;
|
|
|
2157 |
}
|
|
|
2158 |
|
|
|
2159 |
|
|
|
2160 |
/**
|
|
|
2161 |
Creates and opens a temporary file with a unique name for writing and reading.
|
|
|
2162 |
This is equivalent to calling RFile::Temp except that the file created
|
|
|
2163 |
with this function can grow beyond 2GB - 1 also.
|
|
|
2164 |
|
|
|
2165 |
|
|
|
2166 |
Notes:
|
|
|
2167 |
|
|
|
2168 |
1. To close the file, use Close()
|
|
|
2169 |
2. It enables big file support to handle files whose size are greater then 2GB-1
|
|
|
2170 |
|
|
|
2171 |
@param aFs The file server session.
|
|
|
2172 |
@param aPath The directory in which the file is created.
|
|
|
2173 |
@param aName On return, contains the full path and file name of the file.
|
|
|
2174 |
The filename is guaranteed to be unique within the directory
|
|
|
2175 |
specified by aPath.
|
|
|
2176 |
@param aMode The mode in which the file is opened. The access mode is
|
|
|
2177 |
automatically set to EFileWrite. See TFileMode.
|
|
|
2178 |
|
|
|
2179 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2180 |
error codes.
|
|
|
2181 |
|
|
|
2182 |
@see TFileMode
|
|
|
2183 |
@see RFile::Temp()
|
|
|
2184 |
|
|
|
2185 |
@capability Dependent If aPath starts with /Sys then capability Tcb is required
|
|
|
2186 |
@capability Dependent If aPath starts with /Resource then capability Tcb is required
|
|
|
2187 |
@capability Dependent If aPath starts with /Private and does not match this process'
|
|
|
2188 |
SID then AllFiles capability is required.
|
|
|
2189 |
*/
|
|
|
2190 |
EFSRV_EXPORT_C TInt RFile64::Temp(RFs& aFs,const TDesC& aPath,TFileName& aName,TUint aFileMode)
|
|
|
2191 |
{
|
|
|
2192 |
TRACEMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileTemp, MODULEUID, aFs.Handle(), aPath, aFileMode);
|
|
|
2193 |
TInt r = CreateSubSession(aFs,EFsFileTemp,TIpcArgs(&aPath,aFileMode|EFileBigFile,&aName));
|
|
|
2194 |
TRACERETMULT3(UTF::EBorder, UTraceModuleEfsrv::EFileTempReturn, MODULEUID, r, SubSessionHandle(), aName);
|
|
|
2195 |
return r;
|
|
|
2196 |
}
|
|
|
2197 |
|
|
|
2198 |
|
|
|
2199 |
/**
|
|
|
2200 |
Allows a server to adopt an already open file from a client.
|
|
|
2201 |
The client's RFs and RFile or RFile64 handles are contained in message slots within aMsg.
|
|
|
2202 |
|
|
|
2203 |
Assumes that the client's RFs and RFile or RFile64 handles have been sent to the server
|
|
|
2204 |
using TransferToServer().
|
|
|
2205 |
|
|
|
2206 |
This is equivalent to calling RFile::AdoptFromClient
|
|
|
2207 |
except that the file adopted can be enlarged to sizes beyond 2GB-1.
|
|
|
2208 |
|
|
|
2209 |
Note:
|
|
|
2210 |
If a RFile handle is received from the client then enlarging the file beyond
|
|
|
2211 |
2GB-1 might result in inconsistent behaviour by the client, since it(client) would
|
|
|
2212 |
not be able to handle files of size greater than 2GB-1.
|
|
|
2213 |
|
|
|
2214 |
If a RFile64 handle is received from the client then enlarging the file beyond
|
|
|
2215 |
2GB-1 should not cause any issues since the client would be
|
|
|
2216 |
capable of handling files of size greater than 2GB-1.
|
|
|
2217 |
|
|
|
2218 |
This RFile or RFile64 will own it's RFs session so that when the sub-session (RFile or RFile64)
|
|
|
2219 |
is closed so will the RFs session.
|
|
|
2220 |
|
|
|
2221 |
@param aMsg The message received from the client
|
|
|
2222 |
@param aFsHandleIndex The index that identifies the message slot
|
|
|
2223 |
of a file server session (RFs) handle
|
|
|
2224 |
@param aFileHandleIndex The index that identifies the message slot
|
|
|
2225 |
of the sub-session (RFile or RFile64) handle of the already opened file
|
|
|
2226 |
|
|
|
2227 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2228 |
error codes.
|
|
|
2229 |
*/
|
|
|
2230 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromClient(const RMessage2& aMsg, TInt aFsHandleIndex, TInt aFileHandleIndex)
|
|
|
2231 |
{
|
|
|
2232 |
TInt fileHandle = NULL;
|
|
|
2233 |
|
|
|
2234 |
TInt r = KErrNone;
|
|
|
2235 |
if (aFileHandleIndex == 0)
|
|
|
2236 |
fileHandle = aMsg.Int0();
|
|
|
2237 |
else if (aFileHandleIndex == 1)
|
|
|
2238 |
fileHandle = aMsg.Int1();
|
|
|
2239 |
else if (aFileHandleIndex == 2)
|
|
|
2240 |
fileHandle = aMsg.Int2();
|
|
|
2241 |
else if (aFileHandleIndex == 3)
|
|
|
2242 |
fileHandle = aMsg.Int3();
|
|
|
2243 |
else
|
|
|
2244 |
r = KErrArgument;
|
|
|
2245 |
|
|
|
2246 |
#ifdef SYMBIAN_FTRACE_ENABLE
|
|
|
2247 |
TInt handle = NULL;
|
|
|
2248 |
if (aFsHandleIndex == 0)
|
|
|
2249 |
handle = aMsg.Int0();
|
|
|
2250 |
else if (aFsHandleIndex == 1)
|
|
|
2251 |
handle = aMsg.Int1();
|
|
|
2252 |
else if (aFsHandleIndex == 2)
|
|
|
2253 |
handle = aMsg.Int2();
|
|
|
2254 |
else if (aFsHandleIndex == 3)
|
|
|
2255 |
handle = aMsg.Int3();
|
|
|
2256 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClient, MODULEUID, handle, fileHandle, aFsHandleIndex, aFileHandleIndex);
|
|
|
2257 |
#endif
|
|
|
2258 |
|
|
|
2259 |
if (r != KErrNone)
|
|
|
2260 |
{
|
|
|
2261 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r);
|
|
|
2262 |
return r;
|
|
|
2263 |
}
|
|
|
2264 |
|
|
|
2265 |
// Duplicates the file server (RFs) session handle identified by an
|
|
|
2266 |
// existing handle contained in the message slot at index aFsHandleIndex
|
|
|
2267 |
RFs fs;
|
|
|
2268 |
r = fs.Open(aMsg, aFsHandleIndex, KFileServerPolicy);
|
|
|
2269 |
if (r != KErrNone)
|
|
|
2270 |
{
|
|
|
2271 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r);
|
|
|
2272 |
return r;
|
|
|
2273 |
}
|
|
|
2274 |
|
|
|
2275 |
//return CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle));
|
|
|
2276 |
// Slot 1: Indicate Large File Supportis required.
|
|
|
2277 |
r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle, KFileAdopt64));
|
|
|
2278 |
|
|
|
2279 |
TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromClientReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
|
|
|
2280 |
|
|
|
2281 |
return r;
|
|
|
2282 |
}
|
|
|
2283 |
|
|
|
2284 |
|
|
|
2285 |
/**
|
|
|
2286 |
Allows a client to adopt an already open file from a server.
|
|
|
2287 |
|
|
|
2288 |
Assumes that the server's RFs and RFile or RFile64 handles have been sent to the
|
|
|
2289 |
client using TransferToClient().
|
|
|
2290 |
|
|
|
2291 |
This is equivalent to calling RFile::AdoptFromServer
|
|
|
2292 |
except that the file adopted can be enlarged to sizes beyond 2GB-1.
|
|
|
2293 |
|
|
|
2294 |
Note:
|
|
|
2295 |
If a RFile handle is received from the server then enlarging the file beyond
|
|
|
2296 |
2GB-1 might result in inconsistent behaviour by the server, since it(server) would
|
|
|
2297 |
not be able to handle files of size greater than 2GB-1.
|
|
|
2298 |
|
|
|
2299 |
If a RFile64 handle is received from the server then enlarging the file beyond
|
|
|
2300 |
2GB-1 should not cause any issues since the server would be capable of
|
|
|
2301 |
handling files of size greater than 2GB-1.
|
|
|
2302 |
|
|
|
2303 |
This RFile or RFile64 will own it's RFs session so that when the sub-session (RFile or RFile64)
|
|
|
2304 |
is closed so will the RFs session.
|
|
|
2305 |
|
|
|
2306 |
@param aFsHandle The file server session (RFs) handle
|
|
|
2307 |
@param aFileHandle The file (RFile or RFile64) handle of the already opened file
|
|
|
2308 |
|
|
|
2309 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2310 |
error codes.
|
|
|
2311 |
*/
|
|
|
2312 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromServer(TInt aFsHandle, TInt aFileHandle)
|
|
|
2313 |
{
|
|
|
2314 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServer, MODULEUID, aFsHandle, aFileHandle);
|
|
|
2315 |
|
|
|
2316 |
RFs fs;
|
|
|
2317 |
TInt r = fs.SetReturnedHandle(aFsHandle, KFileServerPolicy);
|
|
|
2318 |
if (r != KErrNone)
|
|
|
2319 |
{
|
|
|
2320 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServerReturn, MODULEUID, r);
|
|
|
2321 |
return r;
|
|
|
2322 |
}
|
|
|
2323 |
|
|
|
2324 |
//return(CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(aFileHandle)));
|
|
|
2325 |
// Slot 1: Indicate Large File Supportis required.
|
|
|
2326 |
r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(aFileHandle, KFileAdopt64));
|
|
|
2327 |
|
|
|
2328 |
TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromServerReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
|
|
|
2329 |
|
|
|
2330 |
return r;
|
|
|
2331 |
}
|
|
|
2332 |
|
|
|
2333 |
|
|
|
2334 |
/**
|
|
|
2335 |
Allows a server to adopt an already open file from a client process.
|
|
|
2336 |
The client's file-server (RFs) and file (RFile or RFile64) handles are contained in
|
|
|
2337 |
this process's environment data slots.
|
|
|
2338 |
|
|
|
2339 |
Assumes that the client's RFs and RFile or RFile64 handles have been sent to the server process
|
|
|
2340 |
using TransferToProcess().
|
|
|
2341 |
|
|
|
2342 |
This is equivalent to calling RFile::AdoptFromCreator
|
|
|
2343 |
except that the file adopted can be enlarged to sizes beyond 2GB-1.
|
|
|
2344 |
|
|
|
2345 |
Note:
|
|
|
2346 |
If a RFile handle is received from the client then enlarging the file beyond
|
|
|
2347 |
2GB-1 might result in inconsistent behaviour by the client, since it(client) would
|
|
|
2348 |
not be able to handle files of size greater than 2GB-1.
|
|
|
2349 |
|
|
|
2350 |
If a RFile64 handle is received from the client then enlarging the file beyond
|
|
|
2351 |
2GB-1 should not cause any issues since the client would be capable of
|
|
|
2352 |
handling files of size greater than 2GB-1.
|
|
|
2353 |
|
|
|
2354 |
This RFile or RFile64 will own it's RFs session so that when the sub-session (RFile or RFile64)
|
|
|
2355 |
is closed so will the RFs session.
|
|
|
2356 |
|
|
|
2357 |
@param aFsHandleIndex An index that identifies the slot in the process
|
|
|
2358 |
environment data that contains the file server session (RFs) handle
|
|
|
2359 |
@param aFileHandleIndex An index that identifies the slot in the process
|
|
|
2360 |
environment data that contains the sub-session (RFile or RFile64) handle
|
|
|
2361 |
of the already opened file
|
|
|
2362 |
|
|
|
2363 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2364 |
error codes.
|
|
|
2365 |
*/
|
|
|
2366 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromCreator(TInt aFsHandleIndex, TInt aFileHandleIndex)
|
|
|
2367 |
{
|
|
|
2368 |
TInt fileHandle;
|
|
|
2369 |
TInt r = User::GetTIntParameter(aFileHandleIndex, fileHandle);
|
|
|
2370 |
|
|
|
2371 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreator, MODULEUID, fileHandle, aFsHandleIndex, aFileHandleIndex);
|
|
|
2372 |
|
|
|
2373 |
if (r != KErrNone)
|
|
|
2374 |
{
|
|
|
2375 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r);
|
|
|
2376 |
return r;
|
|
|
2377 |
}
|
|
|
2378 |
|
|
|
2379 |
|
|
|
2380 |
// Duplicates the file server (RFs) session handle identified by an
|
|
|
2381 |
// existing handle contained in the environment slot at index aFsHandleIndex
|
|
|
2382 |
RFs fs;
|
|
|
2383 |
r = fs.Open(aFsHandleIndex, KFileServerPolicy);
|
|
|
2384 |
if (r != KErrNone)
|
|
|
2385 |
{
|
|
|
2386 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r);
|
|
|
2387 |
return r;
|
|
|
2388 |
}
|
|
|
2389 |
|
|
|
2390 |
//return(CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle)));
|
|
|
2391 |
// Slot 1: Indicate Large File Supportis required.
|
|
|
2392 |
r = CreateAutoCloseSubSession(fs, EFsFileAdopt, TIpcArgs(fileHandle, KFileAdopt64));
|
|
|
2393 |
|
|
|
2394 |
TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileAdoptFromCreatorReturn, MODULEUID, r, Session().Handle(), SubSessionHandle());
|
|
|
2395 |
|
|
|
2396 |
return r;
|
|
|
2397 |
}
|
|
|
2398 |
|
|
|
2399 |
|
|
|
2400 |
/**
|
|
|
2401 |
Reads from the file at the specified offset within the file
|
|
|
2402 |
|
|
|
2403 |
This is a synchronous function.
|
|
|
2404 |
|
|
|
2405 |
This is equivalent to calling RFile::Read(TInt, TDes8&) except that this function
|
|
|
2406 |
accepts TInt64, instead of TInt, as its first parameter. This allows to specify
|
|
|
2407 |
the read position beyond 2GB-1.
|
|
|
2408 |
|
|
|
2409 |
@see RFile::Read(TInt aPos, TDes8& aDes)
|
|
|
2410 |
|
|
|
2411 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
2412 |
no error is returned.
|
|
|
2413 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
2414 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
2415 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
2416 |
|
|
|
2417 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
2418 |
the start of the file. If no position is specified, reading
|
|
|
2419 |
begins at the current file position.
|
|
|
2420 |
If aPos is beyond the end of the file, the function returns
|
|
|
2421 |
a zero length descriptor.
|
|
|
2422 |
|
|
|
2423 |
@param aDes The descriptor into which binary data is read. Any existing content
|
|
|
2424 |
is overwritten. On return, its length is set to the number of
|
|
|
2425 |
bytes read.
|
|
|
2426 |
|
|
|
2427 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
2428 |
codes.
|
|
|
2429 |
|
|
|
2430 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2431 |
*/
|
|
|
2432 |
EFSRV_EXPORT_C TInt RFile64::Read(TInt64 aPos, TDes8& aDes) const
|
|
|
2433 |
{
|
|
|
2434 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aDes.MaxLength());
|
|
|
2435 |
|
|
|
2436 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2437 |
|
|
|
2438 |
TInt r;
|
|
|
2439 |
if (!(I64HIGH(aPos+1)))
|
|
|
2440 |
{
|
|
|
2441 |
r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),I64LOW(aPos)));
|
|
|
2442 |
}
|
|
|
2443 |
else
|
|
|
2444 |
{
|
|
|
2445 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2446 |
r = SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.MaxLength(),&pkPos));
|
|
|
2447 |
}
|
|
|
2448 |
|
|
|
2449 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
2450 |
|
|
|
2451 |
return r;
|
|
|
2452 |
}
|
|
|
2453 |
|
|
|
2454 |
|
|
|
2455 |
/**
|
|
|
2456 |
Reads from the file at the specified offset within the file.
|
|
|
2457 |
|
|
|
2458 |
This is an asynchronous function.
|
|
|
2459 |
|
|
|
2460 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TRequestStatus&) except
|
|
|
2461 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2462 |
This allows to specify the read position beyond 2GB-1.
|
|
|
2463 |
|
|
|
2464 |
@see RFile::Read(TInt aPos, TDes8& aDes, TRequestStatus& aStatus)
|
|
|
2465 |
|
|
|
2466 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
2467 |
no error is returned.
|
|
|
2468 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
2469 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
2470 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
2471 |
|
|
|
2472 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
2473 |
the start of the file. If no position is specified,
|
|
|
2474 |
reading begins at the current file position.
|
|
|
2475 |
If aPos is beyond the end of the file, the function returns
|
|
|
2476 |
a zero length descriptor.
|
|
|
2477 |
|
|
|
2478 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
2479 |
content is overwritten. On return, its length is set to
|
|
|
2480 |
the number of bytes read.
|
|
|
2481 |
NB: this function is asynchronous and the request that it
|
|
|
2482 |
represents may not complete until some time after the call
|
|
|
2483 |
to the function has returned. It is important, therefore, that
|
|
|
2484 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
2485 |
been notified that the request is complete.
|
|
|
2486 |
|
|
|
2487 |
@param aStatus The request status. On completion, contains an error code of KErrNone
|
|
|
2488 |
if successful, otherwise one of the other system-wide error codes.
|
|
|
2489 |
|
|
|
2490 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2491 |
*/
|
|
|
2492 |
EFSRV_EXPORT_C void RFile64::Read(TInt64 aPos, TDes8& aDes, TRequestStatus& aStatus) const
|
|
|
2493 |
{
|
|
|
2494 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aDes.MaxLength(), &aStatus);
|
|
|
2495 |
|
|
|
2496 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2497 |
if (!(I64HIGH(aPos+1)))
|
|
|
2498 |
{
|
|
|
2499 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),I64LOW(aPos)),aStatus);
|
|
|
2500 |
}
|
|
|
2501 |
else
|
|
|
2502 |
{
|
|
|
2503 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2504 |
RSubSessionBase::SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.MaxLength(),&pkPos),aStatus);
|
|
|
2505 |
}
|
|
|
2506 |
|
|
|
2507 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
2508 |
}
|
|
|
2509 |
|
|
|
2510 |
|
|
|
2511 |
/**
|
|
|
2512 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
2513 |
offset within the file.
|
|
|
2514 |
|
|
|
2515 |
This is a synchronous function.
|
|
|
2516 |
|
|
|
2517 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TInt) except
|
|
|
2518 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2519 |
This allows to specify the read position beyond 2GB-1.
|
|
|
2520 |
|
|
|
2521 |
@see RFile::Read(TInt aPos, TDes8& aDes, TInt aLength)
|
|
|
2522 |
|
|
|
2523 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
2524 |
no error is returned.
|
|
|
2525 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
2526 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
2527 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
2528 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
2529 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
2530 |
the end of file is reached or if an error has occurred.
|
|
|
2531 |
|
|
|
2532 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
2533 |
the start of the file. If no position is specified,
|
|
|
2534 |
reading begins at the current file position.
|
|
|
2535 |
If aPos is beyond the end of the file, the function returns
|
|
|
2536 |
a zero length descriptor.
|
|
|
2537 |
|
|
|
2538 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
2539 |
contents are overwritten. On return, its length is set to
|
|
|
2540 |
the number of bytes read.
|
|
|
2541 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
2542 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
2543 |
maximum length, then the function updates aStatus parameter with KErrOverflow.
|
|
|
2544 |
It must not be negative otherwise the function updates aStatus with KErrArgument.
|
|
|
2545 |
|
|
|
2546 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
2547 |
error codes.
|
|
|
2548 |
|
|
|
2549 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2550 |
*/
|
|
|
2551 |
EFSRV_EXPORT_C TInt RFile64::Read(TInt64 aPos, TDes8& aDes, TInt aLength) const
|
|
|
2552 |
{
|
|
|
2553 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aLength);
|
|
|
2554 |
|
|
|
2555 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2556 |
if (aLength==0)
|
|
|
2557 |
{
|
|
|
2558 |
aDes.Zero();
|
|
|
2559 |
return(KErrNone);
|
|
|
2560 |
}
|
|
|
2561 |
else if(aLength>aDes.MaxLength())
|
|
|
2562 |
{
|
|
|
2563 |
return(KErrOverflow);
|
|
|
2564 |
}
|
|
|
2565 |
|
|
|
2566 |
TInt r;
|
|
|
2567 |
if (!(I64HIGH(aPos+1)))
|
|
|
2568 |
{
|
|
|
2569 |
r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,I64LOW(aPos)));
|
|
|
2570 |
}
|
|
|
2571 |
else
|
|
|
2572 |
{
|
|
|
2573 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2574 |
r = SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos));
|
|
|
2575 |
}
|
|
|
2576 |
|
|
|
2577 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
2578 |
|
|
|
2579 |
return r;
|
|
|
2580 |
}
|
|
|
2581 |
|
|
|
2582 |
|
|
|
2583 |
/**
|
|
|
2584 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
2585 |
offset within the file.
|
|
|
2586 |
|
|
|
2587 |
This is an asynchronous function.
|
|
|
2588 |
|
|
|
2589 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TInt, TRequestStatus&) except
|
|
|
2590 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2591 |
This allows to specify the read position beyond 2GB-1.
|
|
|
2592 |
|
|
|
2593 |
@see RFile::Read(TInt aPos, TDes8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
2594 |
|
|
|
2595 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
2596 |
no error is returned.
|
|
|
2597 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
2598 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
2599 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
2600 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
2601 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
2602 |
the end of file is reached or if an error has occurred.
|
|
|
2603 |
|
|
|
2604 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
2605 |
the start of the file. If no position is specified,
|
|
|
2606 |
reading begins at the current file position.
|
|
|
2607 |
If aPos is beyond the end of the file, the function returns
|
|
|
2608 |
a zero length descriptor.
|
|
|
2609 |
|
|
|
2610 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
2611 |
contents are overwritten. On return, its length is set to
|
|
|
2612 |
the number of bytes read.
|
|
|
2613 |
NB: this function is asynchronous and the request that it
|
|
|
2614 |
represents may not complete until some time after the call
|
|
|
2615 |
to the function has returned. It is important, therefore, that
|
|
|
2616 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
2617 |
been notified that the request is complete.
|
|
|
2618 |
|
|
|
2619 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
2620 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
2621 |
maximum length, then the function returns KErrOverflow.
|
|
|
2622 |
It must not be negative otherwise the function returns KErrArgument.
|
|
|
2623 |
|
|
|
2624 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
2625 |
otherwise one of the other system-wide error codes.
|
|
|
2626 |
|
|
|
2627 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2628 |
*/
|
|
|
2629 |
EFSRV_EXPORT_C void RFile64::Read(TInt64 aPos, TDes8& aDes, TInt aLength,TRequestStatus& aStatus) const
|
|
|
2630 |
{
|
|
|
2631 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aLength, &aStatus);
|
|
|
2632 |
|
|
|
2633 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2634 |
if (aLength==0)
|
|
|
2635 |
{
|
|
|
2636 |
aDes.Zero();
|
|
|
2637 |
TRequestStatus* req=(&aStatus);
|
|
|
2638 |
User::RequestComplete(req,KErrNone);
|
|
|
2639 |
return;
|
|
|
2640 |
}
|
|
|
2641 |
else if(aLength>aDes.MaxLength())
|
|
|
2642 |
{
|
|
|
2643 |
TRequestStatus* req=(&aStatus);
|
|
|
2644 |
User::RequestComplete(req,KErrOverflow);
|
|
|
2645 |
return;
|
|
|
2646 |
}
|
|
|
2647 |
|
|
|
2648 |
if (!(I64HIGH(aPos+1)))
|
|
|
2649 |
{
|
|
|
2650 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,I64LOW(aPos)),aStatus);
|
|
|
2651 |
}
|
|
|
2652 |
else
|
|
|
2653 |
{
|
|
|
2654 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2655 |
RSubSessionBase::SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos),aStatus);
|
|
|
2656 |
}
|
|
|
2657 |
|
|
|
2658 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
2659 |
}
|
|
|
2660 |
|
|
|
2661 |
|
|
|
2662 |
/**
|
|
|
2663 |
Writes to the file at the specified offset within the file
|
|
|
2664 |
|
|
|
2665 |
This is a synchronous function.
|
|
|
2666 |
|
|
|
2667 |
This is equivalent to calling RFile::Write(TInt, TDes8&) except
|
|
|
2668 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2669 |
This allows to specify the write position beyond 2GB-1.
|
|
|
2670 |
|
|
|
2671 |
@see RFile::Write(TInt aPos, TDes8& aDes)
|
|
|
2672 |
|
|
|
2673 |
|
|
|
2674 |
@param aPos The offset from the start of the file at which the first
|
|
|
2675 |
byte is written.
|
|
|
2676 |
If a position beyond the end of the file is specified, then
|
|
|
2677 |
the write operation begins at the end of the file.
|
|
|
2678 |
If the position has been locked, then the write fails.
|
|
|
2679 |
|
|
|
2680 |
@param aDes The descriptor from which binary data is written. The function writes
|
|
|
2681 |
the entire contents of aDes to the file.
|
|
|
2682 |
|
|
|
2683 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
2684 |
codes.
|
|
|
2685 |
|
|
|
2686 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2687 |
*/
|
|
|
2688 |
EFSRV_EXPORT_C TInt RFile64::Write(TInt64 aPos, const TDesC8& aDes)
|
|
|
2689 |
{
|
|
|
2690 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aDes.Length());
|
|
|
2691 |
|
|
|
2692 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2693 |
|
|
|
2694 |
TInt r;
|
|
|
2695 |
if (!(I64HIGH(aPos+1)))
|
|
|
2696 |
{
|
|
|
2697 |
r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),I64LOW(aPos)));
|
|
|
2698 |
}
|
|
|
2699 |
else
|
|
|
2700 |
{
|
|
|
2701 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2702 |
r = SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.Length(),&pkPos));
|
|
|
2703 |
}
|
|
|
2704 |
|
|
|
2705 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3Return, MODULEUID, r);
|
|
|
2706 |
return r;
|
|
|
2707 |
}
|
|
|
2708 |
|
|
|
2709 |
|
|
|
2710 |
/**
|
|
|
2711 |
Writes to the file at the specified offset within the file
|
|
|
2712 |
|
|
|
2713 |
This is an asynchronous function.
|
|
|
2714 |
|
|
|
2715 |
This is equivalent to calling RFile::Write(TInt, TDes8&, TRequestStatus&) except
|
|
|
2716 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2717 |
This allows to specify the write position beyond 2GB-1.
|
|
|
2718 |
|
|
|
2719 |
@see RFile::Write(TInt aPos, TDes8& aDes, TRequestStatus& aStatus)
|
|
|
2720 |
|
|
|
2721 |
|
|
|
2722 |
@param aPos The offset from the start of the file at which the first
|
|
|
2723 |
byte is written.
|
|
|
2724 |
If a position beyond the end of the file is specified, then
|
|
|
2725 |
the write operation begins at the end of the file.
|
|
|
2726 |
If the position has been locked, then the write fails.
|
|
|
2727 |
|
|
|
2728 |
@param aDes The descriptor from which binary data is written. The function
|
|
|
2729 |
writes the entire contents of aDes to the file.
|
|
|
2730 |
NB: this function is asynchronous and the request that it
|
|
|
2731 |
represents may not complete until some time after the call
|
|
|
2732 |
to the function has returned. It is important, therefore, that
|
|
|
2733 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
2734 |
been notified that the request is complete.
|
|
|
2735 |
|
|
|
2736 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
2737 |
otherwise one of the other system-wide error codes.
|
|
|
2738 |
|
|
|
2739 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2740 |
*/
|
|
|
2741 |
EFSRV_EXPORT_C void RFile64::Write(TInt64 aPos, const TDesC8& aDes,TRequestStatus& aStatus)
|
|
|
2742 |
{
|
|
|
2743 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4, MODULEUID, Session().Handle(), SubSessionHandle(), aDes.Length(), &aStatus);
|
|
|
2744 |
|
|
|
2745 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2746 |
|
|
|
2747 |
if (!(I64HIGH(aPos+1)))
|
|
|
2748 |
{
|
|
|
2749 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),I64LOW(aPos)),aStatus);
|
|
|
2750 |
}
|
|
|
2751 |
else
|
|
|
2752 |
{
|
|
|
2753 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2754 |
RSubSessionBase::SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.Length(),&pkPos),aStatus);
|
|
|
2755 |
}
|
|
|
2756 |
|
|
|
2757 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4Return, MODULEUID);
|
|
|
2758 |
}
|
|
|
2759 |
|
|
|
2760 |
|
|
|
2761 |
/**
|
|
|
2762 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
2763 |
|
|
|
2764 |
This is a synchronous function.
|
|
|
2765 |
|
|
|
2766 |
This is equivalent to calling RFile::Write(TInt, TDes8&, TInt) except
|
|
|
2767 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2768 |
This allows to specify the write position beyond 2GB-1.
|
|
|
2769 |
|
|
|
2770 |
@see RFile::Write(TInt aPos, TDes8& aDes, TInt aLength)
|
|
|
2771 |
|
|
|
2772 |
@param aPos The offset from the start of the file at which the first
|
|
|
2773 |
byte is written.
|
|
|
2774 |
If a position beyond the end of the file is specified, then
|
|
|
2775 |
the write operation begins at the end of the file.
|
|
|
2776 |
If the position has been locked, then the write fails.
|
|
|
2777 |
|
|
|
2778 |
@param aDes The descriptor from which binary data is written.
|
|
|
2779 |
@param aLength The number of bytes to be written from aDes .
|
|
|
2780 |
It must not be negative.
|
|
|
2781 |
|
|
|
2782 |
@return KErrNone if successful; KErrArgument if aLength is negative;
|
|
|
2783 |
otherwise one of the other system-wide error codes.
|
|
|
2784 |
|
|
|
2785 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2786 |
*/
|
|
|
2787 |
EFSRV_EXPORT_C TInt RFile64::Write(TInt64 aPos, const TDesC8& aDes,TInt aLength)
|
|
|
2788 |
{
|
|
|
2789 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1, MODULEUID, Session().Handle(), SubSessionHandle(), aLength);
|
|
|
2790 |
|
|
|
2791 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2792 |
|
|
|
2793 |
TInt r;
|
|
|
2794 |
if (!(I64HIGH(aPos+1)))
|
|
|
2795 |
{
|
|
|
2796 |
r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,I64LOW(aPos)));
|
|
|
2797 |
}
|
|
|
2798 |
else
|
|
|
2799 |
{
|
|
|
2800 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2801 |
r = SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos));
|
|
|
2802 |
}
|
|
|
2803 |
|
|
|
2804 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1Return, MODULEUID, r);
|
|
|
2805 |
return r;
|
|
|
2806 |
}
|
|
|
2807 |
|
|
|
2808 |
|
|
|
2809 |
/**
|
|
|
2810 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
2811 |
|
|
|
2812 |
This is an asynchronous function.
|
|
|
2813 |
|
|
|
2814 |
This is equivalent to calling RFile::Write(TInt, TDes8&, TInt, TRequestStatus&) except
|
|
|
2815 |
that this function accepts TInt64, instead of TInt, as its first parameter.
|
|
|
2816 |
This allows to specify the write position beyond 2GB-1.
|
|
|
2817 |
|
|
|
2818 |
@see RFile::Write(TInt aPos, TDes8& aDes, TInt aLength, TRequestStatus &aStatus)
|
|
|
2819 |
|
|
|
2820 |
@param aPos The offset from the start of the file at which the first
|
|
|
2821 |
byte is written.
|
|
|
2822 |
If a position beyond the end of the file is specified, then
|
|
|
2823 |
the write operation begins at the end of the file.
|
|
|
2824 |
If the position has been locked, then the write fails.
|
|
|
2825 |
|
|
|
2826 |
@param aDes The descriptor from which binary data is written.
|
|
|
2827 |
NB: this function is asynchronous and the request that it
|
|
|
2828 |
represents may not complete until some time after the call
|
|
|
2829 |
to the function has returned. It is important, therefore, that
|
|
|
2830 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
2831 |
been notified that the request is complete.
|
|
|
2832 |
|
|
|
2833 |
@param aLength The number of bytes to be written from aDes.
|
|
|
2834 |
It must not be negative.
|
|
|
2835 |
|
|
|
2836 |
@param aStatus Request status. On completion contains KErrNone if successful;
|
|
|
2837 |
KErrArgument if aLength is negative;
|
|
|
2838 |
otherwise one of the other system-wide error codes.
|
|
|
2839 |
|
|
|
2840 |
@panic FSCLIENT 19 if aPos is negative.
|
|
|
2841 |
*/
|
|
|
2842 |
EFSRV_EXPORT_C void RFile64::Write(TInt64 aPos, const TDesC8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
2843 |
{
|
|
|
2844 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aLength, &aStatus);
|
|
|
2845 |
|
|
|
2846 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
2847 |
|
|
|
2848 |
if (!(I64HIGH(aPos+1)))
|
|
|
2849 |
{
|
|
|
2850 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,I64LOW(aPos)),aStatus);
|
|
|
2851 |
}
|
|
|
2852 |
else
|
|
|
2853 |
{
|
|
|
2854 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
2855 |
RSubSessionBase::SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos),aStatus);
|
|
|
2856 |
}
|
|
|
2857 |
|
|
|
2858 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2Return, MODULEUID);
|
|
|
2859 |
}
|
|
|
2860 |
|
|
|
2861 |
|
|
|
2862 |
/**
|
|
|
2863 |
Sets the the current file position.
|
|
|
2864 |
|
|
|
2865 |
The function can also be used to get the current file
|
|
|
2866 |
position without changing it. The file position is the position at which
|
|
|
2867 |
reading and writing takes place. The start of the file is position zero.
|
|
|
2868 |
|
|
|
2869 |
To retrieve the current file position without changing it, specify ESeekCurrent
|
|
|
2870 |
for the seek mode, and zero for the offset.
|
|
|
2871 |
|
|
|
2872 |
This is equivalent to calling RFile::Seek except that this function accepts
|
|
|
2873 |
a reference to TInt64, instead of TInt, as its second parameter.
|
|
|
2874 |
This allows to seek to positions beyond 2GB-1.
|
|
|
2875 |
|
|
|
2876 |
@see RFile::Seek()
|
|
|
2877 |
|
|
|
2878 |
If the seek mode is ESeekStart, then:
|
|
|
2879 |
|
|
|
2880 |
1. the function does not modify the aPos argument,
|
|
|
2881 |
|
|
|
2882 |
2. the function returns an error if the offset specified is negative.
|
|
|
2883 |
|
|
|
2884 |
If the seek mode is ESeekAddress, an error is returned if:
|
|
|
2885 |
|
|
|
2886 |
1. the file is not in ROM,
|
|
|
2887 |
|
|
|
2888 |
2. the offset specified is greater than the size of the file.
|
|
|
2889 |
|
|
|
2890 |
@param aMode Seek mode. Controls the destination of the seek operation.
|
|
|
2891 |
@param aPos Offset from location specified in aMode. Can be negative.
|
|
|
2892 |
On return contains the new file position.
|
|
|
2893 |
If the seek mode is either ESeekCurrent or ESeekEnd and the offset
|
|
|
2894 |
specifies a position before the start of the file
|
|
|
2895 |
or beyond the end of the file, then on return, aPos is set to
|
|
|
2896 |
the new file position (either the start or the end of the file).
|
|
|
2897 |
If the seek mode is ESeekAddress, aPos returns the address of
|
|
|
2898 |
the byte at the specified offset within the file.
|
|
|
2899 |
|
|
|
2900 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
2901 |
codes.
|
|
|
2902 |
*/
|
|
|
2903 |
EFSRV_EXPORT_C TInt RFile64::Seek(TSeek aMode, TInt64& aPos) const
|
|
|
2904 |
{
|
|
|
2905 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileSeek, MODULEUID, Session().Handle(), SubSessionHandle(), aMode, aPos, 0);
|
|
|
2906 |
|
|
|
2907 |
TPckgC<TInt64> pkOffset(aPos);
|
|
|
2908 |
TPckg<TInt64> pkNewPos(aPos);
|
|
|
2909 |
TInt r = SendReceive(EFsFileSeek|KIpcArgSlot0Desc|KIpcArgSlot2Desc,TIpcArgs(&pkOffset,aMode,&pkNewPos));
|
|
|
2910 |
|
|
|
2911 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSeekReturn, MODULEUID, r);
|
|
|
2912 |
return r;
|
|
|
2913 |
}
|
|
|
2914 |
|
|
|
2915 |
|
|
|
2916 |
/**
|
|
|
2917 |
Gets the current file size.
|
|
|
2918 |
|
|
|
2919 |
This is equivalent to calling RFile::Size except that this function accepts
|
|
|
2920 |
a reference to TInt64, instead of TInt, as its first parameter.
|
|
|
2921 |
This allows to query file sizes, which are greater than 2GB-1
|
|
|
2922 |
|
|
|
2923 |
@see RFile::Size()
|
|
|
2924 |
|
|
|
2925 |
|
|
|
2926 |
@param aSize On return, the size of the file in bytes.
|
|
|
2927 |
|
|
|
2928 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
2929 |
codes.
|
|
|
2930 |
*/
|
|
|
2931 |
EFSRV_EXPORT_C TInt RFile64::Size(TInt64& aSize) const
|
|
|
2932 |
{
|
|
|
2933 |
TRACE2(UTF::EBorder, UTraceModuleEfsrv::EFileSize2, MODULEUID, Session().Handle(), SubSessionHandle());
|
|
|
2934 |
|
|
|
2935 |
TPckg<TInt64> pkSize(aSize);
|
|
|
2936 |
TInt r = SendReceive(EFsFileSize|KIpcArgSlot0Desc,TIpcArgs(&pkSize));
|
|
|
2937 |
|
|
|
2938 |
TRACERET3(UTF::EBorder, UTraceModuleEfsrv::EFileSize2Return, MODULEUID, r, I64LOW(aSize), I64HIGH(aSize));
|
|
|
2939 |
return r;
|
|
|
2940 |
}
|
|
|
2941 |
|
|
|
2942 |
|
|
|
2943 |
/**
|
|
|
2944 |
Sets the file size.
|
|
|
2945 |
|
|
|
2946 |
If the size of the file is reduced, data may be lost from
|
|
|
2947 |
the end of the file.
|
|
|
2948 |
|
|
|
2949 |
This is equivalent to calling RFile::SetSize except that this function accepts
|
|
|
2950 |
a reference to TInt64, instead of TInt, as its first parameter.
|
|
|
2951 |
This allows to set file sizes to greater than 2GB-1
|
|
|
2952 |
|
|
|
2953 |
@see RFile::SetSize()
|
|
|
2954 |
|
|
|
2955 |
|
|
|
2956 |
Note:
|
|
|
2957 |
|
|
|
2958 |
1. The current file position remains unchanged unless SetSize() reduces the size
|
|
|
2959 |
of the file in such a way that the current file position is now beyond
|
|
|
2960 |
the end of the file. In this case, the current file position is set to
|
|
|
2961 |
the end of file.
|
|
|
2962 |
|
|
|
2963 |
2. If the file was not opened for writing, an error is returned.
|
|
|
2964 |
|
|
|
2965 |
@param aSize The new size of the file, in bytes. This value must not be negative, otherwise the function raises a panic.
|
|
|
2966 |
|
|
|
2967 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
2968 |
codes.
|
|
|
2969 |
|
|
|
2970 |
@panic FSCLIENT 20 If aSize is negative.
|
|
|
2971 |
*/
|
|
|
2972 |
EFSRV_EXPORT_C TInt RFile64::SetSize(TInt64 aSize)
|
|
|
2973 |
{
|
|
|
2974 |
TRACE4(UTF::EBorder, UTraceModuleEfsrv::EFileSetSize, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aSize), I64HIGH(aSize));
|
|
|
2975 |
|
|
|
2976 |
TPckgC<TInt64> pkSize(aSize);
|
|
|
2977 |
TInt r = SendReceive(EFsFileSetSize|KIpcArgSlot0Desc, TIpcArgs(&pkSize));
|
|
|
2978 |
|
|
|
2979 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileSetSizeReturn, MODULEUID, r);
|
|
|
2980 |
return r;
|
|
|
2981 |
}
|
|
|
2982 |
|
|
|
2983 |
|
|
|
2984 |
/**
|
|
|
2985 |
Locks a region within the file as defined by a range of bytes.
|
|
|
2986 |
|
|
|
2987 |
This ensures that those bytes are accessible
|
|
|
2988 |
only through the RFile object which claims the lock. To re-allow access by
|
|
|
2989 |
other programs to the locked region, it must either be unlocked or the file
|
|
|
2990 |
closed. Locking can be used to synchronize operations on a file when more
|
|
|
2991 |
than one program has access to the file in EFileShareAny mode.
|
|
|
2992 |
|
|
|
2993 |
More than one distinct region of a file can be locked, but an error is returned
|
|
|
2994 |
if more than one lock is placed on the same region. Different RFile objects
|
|
|
2995 |
can lock different parts of the same file as long as the file is opened in
|
|
|
2996 |
EFileShareAny mode. The locked region may extend beyond the end of a file;
|
|
|
2997 |
this prevents the file from being extended by other programs.
|
|
|
2998 |
|
|
|
2999 |
This is equivalent to calling RFile::Lock except that this function accepts
|
|
|
3000 |
TInt64 parameters instead of TInt parameters.
|
|
|
3001 |
This allows to to lock positions in file beyond 2GB-1.
|
|
|
3002 |
|
|
|
3003 |
@see RFile::Lock()
|
|
|
3004 |
|
|
|
3005 |
@param aPos Position in file from which to lock; this is the offset from
|
|
|
3006 |
the beginning of the file.
|
|
|
3007 |
@param aLength Number of bytes to lock.
|
|
|
3008 |
|
|
|
3009 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
3010 |
codes.
|
|
|
3011 |
|
|
|
3012 |
@panic FSCLIENT 17 if aLength is not greater than zero,
|
|
|
3013 |
*/
|
|
|
3014 |
EFSRV_EXPORT_C TInt RFile64::Lock(TInt64 aPos, TInt64 aLength) const
|
|
|
3015 |
{
|
|
|
3016 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileLock, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aLength);
|
|
|
3017 |
|
|
|
3018 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
3019 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
3020 |
TPckgC<TInt64> pkLength(aLength);
|
|
|
3021 |
|
|
|
3022 |
TInt r;
|
|
|
3023 |
|
|
|
3024 |
if(aPos <= KMaxTInt && aLength <= KMaxTInt)
|
|
|
3025 |
r = SendReceive(EFsFileLock,TIpcArgs(I64LOW(aPos), I64LOW(aLength)));
|
|
|
3026 |
else if(aPos <= KMaxTInt)
|
|
|
3027 |
r = SendReceive(EFsFileLock|KIpcArgSlot1Desc,TIpcArgs(I64LOW(aPos), &pkLength));
|
|
|
3028 |
else if(aLength <= KMaxTInt)
|
|
|
3029 |
r = SendReceive(EFsFileLock|KIpcArgSlot0Desc,TIpcArgs(&pkPos, I64LOW(aLength)));
|
|
|
3030 |
else
|
|
|
3031 |
r = SendReceive(EFsFileLock|KIpcArgSlot0Desc|KIpcArgSlot1Desc,TIpcArgs(&pkPos, &pkLength));
|
|
|
3032 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileLockReturn, MODULEUID, r);
|
|
|
3033 |
return r;
|
|
|
3034 |
}
|
|
|
3035 |
|
|
|
3036 |
|
|
|
3037 |
/**
|
|
|
3038 |
Unlocks a region within the file as defined by a range of bytes.
|
|
|
3039 |
|
|
|
3040 |
A lock can only be removed by the RFile object which claimed the lock.
|
|
|
3041 |
|
|
|
3042 |
A portion of a locked region cannot be unlocked. The entire locked region
|
|
|
3043 |
must be unlocked otherwise an error is returned. If any byte within
|
|
|
3044 |
the specified range of bytes to unlock is not locked, an error is returned.
|
|
|
3045 |
|
|
|
3046 |
This is equivalent to calling RFile::UnLock except that this function accepts
|
|
|
3047 |
TInt64 parameters instead of TInt parameters.
|
|
|
3048 |
This allows to to unlock positions in file beyond 2GB-1.
|
|
|
3049 |
|
|
|
3050 |
@see RFile::UnLock()
|
|
|
3051 |
|
|
|
3052 |
@param aPos Position in file from which to unlock; this is the offset from
|
|
|
3053 |
the beginning of the file.
|
|
|
3054 |
@param aLength Number of bytes to unlock.
|
|
|
3055 |
|
|
|
3056 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
3057 |
codes.
|
|
|
3058 |
|
|
|
3059 |
@panic FSCLIENT 18 if aLength is not greater than zero,
|
|
|
3060 |
*/
|
|
|
3061 |
EFSRV_EXPORT_C TInt RFile64::UnLock(TInt64 aPos, TInt64 aLength) const
|
|
|
3062 |
{
|
|
|
3063 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileUnLock, MODULEUID, Session().Handle(), SubSessionHandle(), I64LOW(aPos), I64HIGH(aPos), aLength);
|
|
|
3064 |
|
|
|
3065 |
__ASSERT_ALWAYS(aPos>=0,Panic(EPosNegative));
|
|
|
3066 |
|
|
|
3067 |
TPckgC<TInt64> pkPos(aPos);
|
|
|
3068 |
TPckgC<TInt64> pkLength(aLength);
|
|
|
3069 |
|
|
|
3070 |
TInt r;
|
|
|
3071 |
|
|
|
3072 |
if(aPos <= KMaxTInt && aLength <= KMaxTInt)
|
|
|
3073 |
r = SendReceive(EFsFileUnLock,TIpcArgs(I64LOW(aPos), I64LOW(aLength)));
|
|
|
3074 |
else if(aPos <= KMaxTInt)
|
|
|
3075 |
r = SendReceive(EFsFileUnLock|KIpcArgSlot1Desc,TIpcArgs(I64LOW(aPos), &pkLength));
|
|
|
3076 |
else if(aLength <= KMaxTInt)
|
|
|
3077 |
r = SendReceive(EFsFileUnLock|KIpcArgSlot0Desc,TIpcArgs(&pkPos, I64LOW(aLength)));
|
|
|
3078 |
else
|
|
|
3079 |
r = SendReceive(EFsFileUnLock|KIpcArgSlot0Desc|KIpcArgSlot1Desc,TIpcArgs(&pkPos, &pkLength));
|
|
|
3080 |
|
|
|
3081 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileUnLockReturn, MODULEUID, r);
|
|
|
3082 |
return r;
|
|
|
3083 |
}
|
|
|
3084 |
|
|
|
3085 |
|
|
|
3086 |
/**
|
|
|
3087 |
Reads from the file at the specified offset within the file
|
|
|
3088 |
|
|
|
3089 |
This is a synchronous function.
|
|
|
3090 |
|
|
|
3091 |
This is equivalent to calling RFile::Read(TInt, TDes8&) or RFile64::Read(TInt64, TDes8&)
|
|
|
3092 |
except that this function accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3093 |
|
|
|
3094 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3095 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3096 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3097 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3098 |
|
|
|
3099 |
|
|
|
3100 |
@see RFile::Read(TInt aPos, TDes8& aDes)
|
|
|
3101 |
@see RFile64::Read(TInt aPos, TDes8& aDes)
|
|
|
3102 |
|
|
|
3103 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
3104 |
no error is returned.
|
|
|
3105 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
3106 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
3107 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
3108 |
|
|
|
3109 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
3110 |
the start of the file. If no position is specified, reading
|
|
|
3111 |
begins at the current file position.
|
|
|
3112 |
If aPos is beyond the end of the file, the function returns
|
|
|
3113 |
a zero length descriptor.
|
|
|
3114 |
|
|
|
3115 |
@param aDes The descriptor into which binary data is read. Any existing content
|
|
|
3116 |
is overwritten. On return, its length is set to the number of
|
|
|
3117 |
bytes read.
|
|
|
3118 |
|
|
|
3119 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
3120 |
codes.
|
|
|
3121 |
|
|
|
3122 |
*/
|
|
|
3123 |
EFSRV_EXPORT_C TInt RFile64::Read(TUint aPos,TDes8& aDes) const
|
|
|
3124 |
{
|
|
|
3125 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.MaxLength());
|
|
|
3126 |
|
|
|
3127 |
TInt r;
|
|
|
3128 |
if(!(aPos + 1))
|
|
|
3129 |
{
|
|
|
3130 |
r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),aPos));
|
|
|
3131 |
}
|
|
|
3132 |
else
|
|
|
3133 |
{
|
|
|
3134 |
TInt64 pos = aPos;
|
|
|
3135 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3136 |
r = SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.MaxLength(),&pkPos));
|
|
|
3137 |
}
|
|
|
3138 |
|
|
|
3139 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
3140 |
|
|
|
3141 |
return r;
|
|
|
3142 |
}
|
|
|
3143 |
|
|
|
3144 |
|
|
|
3145 |
/**
|
|
|
3146 |
Reads from the file at the specified offset within the file.
|
|
|
3147 |
|
|
|
3148 |
This is an asynchronous function.
|
|
|
3149 |
|
|
|
3150 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TRequestStatus&) or
|
|
|
3151 |
RFile64::Read(TInt64, TDes8&, TRequestStatus&) except that this function
|
|
|
3152 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3153 |
|
|
|
3154 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3155 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3156 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3157 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3158 |
|
|
|
3159 |
@see RFile::Read(TInt aPos, TDes8& aDes, TRequestStatus& aStatus)
|
|
|
3160 |
@see RFile64::Read(TInt aPos, TDes8& aDes, TRequestStatus& aStatus)
|
|
|
3161 |
|
|
|
3162 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
3163 |
no error is returned.
|
|
|
3164 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
3165 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
3166 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
3167 |
|
|
|
3168 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
3169 |
the start of the file. If no position is specified,
|
|
|
3170 |
reading begins at the current file position.
|
|
|
3171 |
If aPos is beyond the end of the file, the function returns
|
|
|
3172 |
a zero length descriptor.
|
|
|
3173 |
|
|
|
3174 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
3175 |
content is overwritten. On return, its length is set to
|
|
|
3176 |
the number of bytes read.
|
|
|
3177 |
NB: this function is asynchronous and the request that it
|
|
|
3178 |
represents may not complete until some time after the call
|
|
|
3179 |
to the function has returned. It is important, therefore, that
|
|
|
3180 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
3181 |
been notified that the request is complete.
|
|
|
3182 |
|
|
|
3183 |
@param aStatus The request status. On completion, contains an error code of KErrNone
|
|
|
3184 |
if successful, otherwise one of the other system-wide error codes.
|
|
|
3185 |
|
|
|
3186 |
*/
|
|
|
3187 |
EFSRV_EXPORT_C void RFile64::Read(TUint aPos,TDes8& aDes,TRequestStatus& aStatus) const
|
|
|
3188 |
{
|
|
|
3189 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.MaxLength(), &aStatus);
|
|
|
3190 |
|
|
|
3191 |
if(!(aPos + 1))
|
|
|
3192 |
{
|
|
|
3193 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aDes.MaxLength(),aPos),aStatus);
|
|
|
3194 |
}
|
|
|
3195 |
else
|
|
|
3196 |
{
|
|
|
3197 |
TInt64 pos = aPos;
|
|
|
3198 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3199 |
RSubSessionBase::SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.MaxLength(),&pkPos),aStatus);
|
|
|
3200 |
}
|
|
|
3201 |
|
|
|
3202 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
3203 |
}
|
|
|
3204 |
|
|
|
3205 |
|
|
|
3206 |
/**
|
|
|
3207 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
3208 |
offset within the file.
|
|
|
3209 |
|
|
|
3210 |
This is a synchronous function.
|
|
|
3211 |
|
|
|
3212 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TInt) or
|
|
|
3213 |
RFile64::Read(TInt64, TDes8&, TInt) except that this function
|
|
|
3214 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3215 |
|
|
|
3216 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3217 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3218 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3219 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3220 |
|
|
|
3221 |
|
|
|
3222 |
@see RFile::Read(TInt aPos, TDes8& aDes,TInt aLength)
|
|
|
3223 |
@see RFile64::Read(TInt aPos, TDes8& aDes,TInt aLength)
|
|
|
3224 |
|
|
|
3225 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
3226 |
no error is returned.
|
|
|
3227 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
3228 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
3229 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
3230 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
3231 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
3232 |
the end of file is reached or if an error has occurred.
|
|
|
3233 |
|
|
|
3234 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
3235 |
the start of the file. If no position is specified,
|
|
|
3236 |
reading begins at the current file position.
|
|
|
3237 |
If aPos is beyond the end of the file, the function returns
|
|
|
3238 |
a zero length descriptor.
|
|
|
3239 |
|
|
|
3240 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
3241 |
contents are overwritten. On return, its length is set to
|
|
|
3242 |
the number of bytes read.
|
|
|
3243 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
3244 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
3245 |
maximum length, then the function updates aStatus parameter with KErrOverflow.
|
|
|
3246 |
It must not be negative otherwise the function updates aStatus with KErrArgument.
|
|
|
3247 |
|
|
|
3248 |
@return KErrNone if successful, otherwise one of the other system-wide
|
|
|
3249 |
error codes.
|
|
|
3250 |
|
|
|
3251 |
*/
|
|
|
3252 |
EFSRV_EXPORT_C TInt RFile64::Read(TUint aPos,TDes8& aDes,TInt aLength) const
|
|
|
3253 |
{
|
|
|
3254 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileRead3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength);
|
|
|
3255 |
|
|
|
3256 |
if (aLength==0)
|
|
|
3257 |
{
|
|
|
3258 |
aDes.Zero();
|
|
|
3259 |
return(KErrNone);
|
|
|
3260 |
}
|
|
|
3261 |
else if(aLength>aDes.MaxLength())
|
|
|
3262 |
{
|
|
|
3263 |
return(KErrOverflow);
|
|
|
3264 |
}
|
|
|
3265 |
|
|
|
3266 |
TInt r;
|
|
|
3267 |
if(!(aPos + 1))
|
|
|
3268 |
{
|
|
|
3269 |
r = SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,aPos));
|
|
|
3270 |
}
|
|
|
3271 |
else
|
|
|
3272 |
{
|
|
|
3273 |
TInt64 pos = aPos;
|
|
|
3274 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3275 |
r = SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos));
|
|
|
3276 |
}
|
|
|
3277 |
|
|
|
3278 |
TRACERET2(UTF::EBorder, UTraceModuleEfsrv::EFileRead3Return, MODULEUID, r, aDes.Length());
|
|
|
3279 |
|
|
|
3280 |
return r;
|
|
|
3281 |
}
|
|
|
3282 |
|
|
|
3283 |
|
|
|
3284 |
/**
|
|
|
3285 |
Reads the specified number of bytes of binary data from the file at a specified
|
|
|
3286 |
offset within the file.
|
|
|
3287 |
|
|
|
3288 |
This is an asynchronous function.
|
|
|
3289 |
|
|
|
3290 |
This is equivalent to calling RFile::Read(TInt, TDes8&, TInt,TRequestStatus&) or
|
|
|
3291 |
RFile64::Read(TInt64, TDes8&, TInt, TRequestStatus&) except that this function
|
|
|
3292 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3293 |
|
|
|
3294 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3295 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3296 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3297 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3298 |
|
|
|
3299 |
|
|
|
3300 |
@see RFile::Read(TInt aPos, TDes8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
3301 |
@see RFile64::Read(TInt aPos, TDes8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
3302 |
|
|
|
3303 |
Note that when an attempt is made to read beyond the end of the file,
|
|
|
3304 |
no error is returned.
|
|
|
3305 |
The descriptor's length is set to the number of bytes read into it.
|
|
|
3306 |
Therefore, when reading through a file, the end of file has been reached
|
|
|
3307 |
when the descriptor length, as returned by TDesC8::Length(), is zero.
|
|
|
3308 |
Assuming aLength is less than the maximum length of the descriptor, the only
|
|
|
3309 |
circumstances in which Read() can return fewer bytes than requested is when
|
|
|
3310 |
the end of file is reached or if an error has occurred.
|
|
|
3311 |
|
|
|
3312 |
@param aPos Position of first byte to be read. This is an offset from
|
|
|
3313 |
the start of the file. If no position is specified,
|
|
|
3314 |
reading begins at the current file position.
|
|
|
3315 |
If aPos is beyond the end of the file, the function returns
|
|
|
3316 |
a zero length descriptor.
|
|
|
3317 |
|
|
|
3318 |
@param aDes The descriptor into which binary data is read. Any existing
|
|
|
3319 |
contents are overwritten. On return, its length is set to
|
|
|
3320 |
the number of bytes read.
|
|
|
3321 |
NB: this function is asynchronous and the request that it
|
|
|
3322 |
represents may not complete until some time after the call
|
|
|
3323 |
to the function has returned. It is important, therefore, that
|
|
|
3324 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
3325 |
been notified that the request is complete.
|
|
|
3326 |
|
|
|
3327 |
@param aLength The number of bytes to read from the file into the descriptor.
|
|
|
3328 |
If an attempt is made to read more bytes than the descriptor's
|
|
|
3329 |
maximum length, then the function returns KErrOverflow.
|
|
|
3330 |
It must not be negative otherwise the function returns KErrArgument.
|
|
|
3331 |
|
|
|
3332 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
3333 |
otherwise one of the other system-wide error codes.
|
|
|
3334 |
|
|
|
3335 |
*/
|
|
|
3336 |
EFSRV_EXPORT_C void RFile64::Read(TUint aPos,TDes8& aDes,TInt aLength,TRequestStatus& aStatus) const
|
|
|
3337 |
{
|
|
|
3338 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileRead4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength, &aStatus);
|
|
|
3339 |
|
|
|
3340 |
if (aLength==0)
|
|
|
3341 |
{
|
|
|
3342 |
aDes.Zero();
|
|
|
3343 |
TRequestStatus* req=(&aStatus);
|
|
|
3344 |
User::RequestComplete(req,KErrNone);
|
|
|
3345 |
return;
|
|
|
3346 |
}
|
|
|
3347 |
else if(aLength>aDes.MaxLength())
|
|
|
3348 |
{
|
|
|
3349 |
TRequestStatus* req=(&aStatus);
|
|
|
3350 |
User::RequestComplete(req,KErrOverflow);
|
|
|
3351 |
return;
|
|
|
3352 |
}
|
|
|
3353 |
|
|
|
3354 |
if(!(aPos + 1))
|
|
|
3355 |
{
|
|
|
3356 |
RSubSessionBase::SendReceive(EFsFileRead,TIpcArgs(&aDes,aLength,aPos),aStatus);
|
|
|
3357 |
}
|
|
|
3358 |
else
|
|
|
3359 |
{
|
|
|
3360 |
TInt64 pos = aPos;
|
|
|
3361 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3362 |
RSubSessionBase::SendReceive(EFsFileRead|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos),aStatus);
|
|
|
3363 |
}
|
|
|
3364 |
|
|
|
3365 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileRead4Return, MODULEUID);
|
|
|
3366 |
}
|
|
|
3367 |
|
|
|
3368 |
|
|
|
3369 |
/**
|
|
|
3370 |
Writes to the file at the specified offset within the file
|
|
|
3371 |
|
|
|
3372 |
This is a synchronous function.
|
|
|
3373 |
|
|
|
3374 |
This is equivalent to calling RFile::Write(TInt, TDes8&) or
|
|
|
3375 |
RFile64::Write(TInt64, TDes8&) except that this function
|
|
|
3376 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3377 |
|
|
|
3378 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3379 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3380 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3381 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3382 |
|
|
|
3383 |
|
|
|
3384 |
@see RFile::Write(TInt aPos, TDes8& aDes)
|
|
|
3385 |
@see RFile64::Write(TInt aPos, TDes8& aDes)
|
|
|
3386 |
|
|
|
3387 |
|
|
|
3388 |
@param aPos The offset from the start of the file at which the first
|
|
|
3389 |
byte is written.
|
|
|
3390 |
If a position beyond the end of the file is specified, then
|
|
|
3391 |
the write operation begins at the end of the file.
|
|
|
3392 |
If the position has been locked, then the write fails.
|
|
|
3393 |
|
|
|
3394 |
@param aDes The descriptor from which binary data is written. The function writes
|
|
|
3395 |
the entire contents of aDes to the file.
|
|
|
3396 |
|
|
|
3397 |
@return KErrNone if successful, otherwise one of the other system-wide error
|
|
|
3398 |
codes.
|
|
|
3399 |
|
|
|
3400 |
*/
|
|
|
3401 |
EFSRV_EXPORT_C TInt RFile64::Write(TUint aPos,const TDesC8& aDes)
|
|
|
3402 |
{
|
|
|
3403 |
TRACE5(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.Length());
|
|
|
3404 |
|
|
|
3405 |
TInt r;
|
|
|
3406 |
if(!(aPos + 1))
|
|
|
3407 |
{
|
|
|
3408 |
r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),aPos));
|
|
|
3409 |
}
|
|
|
3410 |
else
|
|
|
3411 |
{
|
|
|
3412 |
TInt64 pos = aPos;
|
|
|
3413 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3414 |
r = SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.Length(),&pkPos));
|
|
|
3415 |
}
|
|
|
3416 |
|
|
|
3417 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite3Return, MODULEUID, r);
|
|
|
3418 |
return r;
|
|
|
3419 |
}
|
|
|
3420 |
|
|
|
3421 |
|
|
|
3422 |
/**
|
|
|
3423 |
Writes to the file at the specified offset within the file
|
|
|
3424 |
|
|
|
3425 |
This is an asynchronous function.
|
|
|
3426 |
|
|
|
3427 |
This is equivalent to calling RFile::Write(TInt, TDes8&,TRequestStatus&) or
|
|
|
3428 |
RFile64::Write(TInt64, TDes8&,TRequestStatus&) except that this function
|
|
|
3429 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3430 |
|
|
|
3431 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3432 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3433 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3434 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3435 |
|
|
|
3436 |
|
|
|
3437 |
@see RFile::Write(TInt aPos, TDes8& aDes,TRequestStatus& aStatus)
|
|
|
3438 |
@see RFile64::Write(TInt aPos, TDes8& aDes,TRequestStatus& aStatus)
|
|
|
3439 |
|
|
|
3440 |
|
|
|
3441 |
@param aPos The offset from the start of the file at which the first
|
|
|
3442 |
byte is written.
|
|
|
3443 |
If a position beyond the end of the file is specified, then
|
|
|
3444 |
the write operation begins at the end of the file.
|
|
|
3445 |
If the position has been locked, then the write fails.
|
|
|
3446 |
|
|
|
3447 |
@param aDes The descriptor from which binary data is written. The function
|
|
|
3448 |
writes the entire contents of aDes to the file.
|
|
|
3449 |
NB: this function is asynchronous and the request that it
|
|
|
3450 |
represents may not complete until some time after the call
|
|
|
3451 |
to the function has returned. It is important, therefore, that
|
|
|
3452 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
3453 |
been notified that the request is complete.
|
|
|
3454 |
|
|
|
3455 |
@param aStatus Request status. On completion contains KErrNone if successful,
|
|
|
3456 |
otherwise one of the other system-wide error codes.
|
|
|
3457 |
|
|
|
3458 |
*/
|
|
|
3459 |
EFSRV_EXPORT_C void RFile64::Write(TUint aPos,const TDesC8& aDes,TRequestStatus& aStatus)
|
|
|
3460 |
{
|
|
|
3461 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aDes.Length(), &aStatus);
|
|
|
3462 |
|
|
|
3463 |
if(!(aPos + 1))
|
|
|
3464 |
{
|
|
|
3465 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aDes.Length(),aPos),aStatus);
|
|
|
3466 |
}
|
|
|
3467 |
else
|
|
|
3468 |
{
|
|
|
3469 |
TInt64 pos = aPos;
|
|
|
3470 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3471 |
RSubSessionBase::SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aDes.Length(),&pkPos),aStatus);
|
|
|
3472 |
}
|
|
|
3473 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite4Return, MODULEUID);
|
|
|
3474 |
}
|
|
|
3475 |
|
|
|
3476 |
|
|
|
3477 |
/**
|
|
|
3478 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
3479 |
|
|
|
3480 |
This is a synchronous function.
|
|
|
3481 |
|
|
|
3482 |
This is equivalent to calling RFile::Write(TInt, TDes8&,TInt) or
|
|
|
3483 |
RFile64::Write(TInt64, TDes8&,TInt) except that this function
|
|
|
3484 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3485 |
|
|
|
3486 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3487 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3488 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3489 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3490 |
|
|
|
3491 |
|
|
|
3492 |
@see RFile::Write(TInt aPos, TDes8& aDes,TInt aLength)
|
|
|
3493 |
@see RFile64::Write(TInt aPos, TDes8& aDes,TInt aLength)
|
|
|
3494 |
|
|
|
3495 |
@param aPos The offset from the start of the file at which the first
|
|
|
3496 |
byte is written.
|
|
|
3497 |
If a position beyond the end of the file is specified, then
|
|
|
3498 |
the write operation begins at the end of the file.
|
|
|
3499 |
If the position has been locked, then the write fails.
|
|
|
3500 |
|
|
|
3501 |
@param aDes The descriptor from which binary data is written.
|
|
|
3502 |
@param aLength The number of bytes to be written from aDes .
|
|
|
3503 |
It must not be negative.
|
|
|
3504 |
|
|
|
3505 |
@return KErrNone if successful; KErrArgument if aLength is negative;
|
|
|
3506 |
otherwise one of the other system-wide error codes.
|
|
|
3507 |
|
|
|
3508 |
*/
|
|
|
3509 |
EFSRV_EXPORT_C TInt RFile64::Write(TUint aPos,const TDesC8& aDes,TInt aLength)
|
|
|
3510 |
{
|
|
|
3511 |
TRACE3(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1, MODULEUID, Session().Handle(), SubSessionHandle(), aLength);
|
|
|
3512 |
|
|
|
3513 |
TInt r;
|
|
|
3514 |
if(!(aPos + 1))
|
|
|
3515 |
{
|
|
|
3516 |
r = SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,aPos));
|
|
|
3517 |
}
|
|
|
3518 |
else
|
|
|
3519 |
{
|
|
|
3520 |
TInt64 pos = aPos;
|
|
|
3521 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3522 |
r = SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos));
|
|
|
3523 |
}
|
|
|
3524 |
|
|
|
3525 |
TRACERET1(UTF::EBorder, UTraceModuleEfsrv::EFileWrite1Return, MODULEUID, r);
|
|
|
3526 |
return r;
|
|
|
3527 |
}
|
|
|
3528 |
|
|
|
3529 |
|
|
|
3530 |
/**
|
|
|
3531 |
Writes the specified number of bytes to the file at the specified offset within the file.
|
|
|
3532 |
|
|
|
3533 |
This is an asynchronous function.
|
|
|
3534 |
|
|
|
3535 |
This is equivalent to calling RFile::Write(TInt, TDes8&,TInt,TRequestStatus&) or
|
|
|
3536 |
RFile64::Write(TInt64, TDes8&,TInt,TRequestStatus&) except that this function
|
|
|
3537 |
accepts TUint, instead of TInt or TInt64, as its first parameter.
|
|
|
3538 |
|
|
|
3539 |
This function is provided for gradual migration of a client from 32-bit RFile APIs
|
|
|
3540 |
to 64-bit RFile64 APIs. It is protected under _F32_STRICT_64_BIT_MIGRATION
|
|
|
3541 |
macro. If the macro is defined, then it hides this overload, which would then throw
|
|
|
3542 |
compile-time errors for any user code that uses TUint parameter for RFile64::Read.
|
|
|
3543 |
|
|
|
3544 |
|
|
|
3545 |
@see RFile::Write(TInt aPos, TDes8& aDes, TInt aLength, TRequestStatus& aStatus)
|
|
|
3546 |
@see RFile64::Write(TInt aPos, TDes8& aDes,TInt aLength, TRequestStatus& aStatus)
|
|
|
3547 |
|
|
|
3548 |
|
|
|
3549 |
@param aPos The offset from the start of the file at which the first
|
|
|
3550 |
byte is written.
|
|
|
3551 |
If a position beyond the end of the file is specified, then
|
|
|
3552 |
the write operation begins at the end of the file.
|
|
|
3553 |
If the position has been locked, then the write fails.
|
|
|
3554 |
|
|
|
3555 |
@param aDes The descriptor from which binary data is written.
|
|
|
3556 |
NB: this function is asynchronous and the request that it
|
|
|
3557 |
represents may not complete until some time after the call
|
|
|
3558 |
to the function has returned. It is important, therefore, that
|
|
|
3559 |
this descriptor remain valid, or remain in scope, until you have
|
|
|
3560 |
been notified that the request is complete.
|
|
|
3561 |
|
|
|
3562 |
@param aLength The number of bytes to be written from aDes.
|
|
|
3563 |
It must not be negative.
|
|
|
3564 |
|
|
|
3565 |
@param aStatus Request status. On completion contains KErrNone if successful;
|
|
|
3566 |
KErrArgument if aLength is negative;
|
|
|
3567 |
otherwise one of the other system-wide error codes.
|
|
|
3568 |
|
|
|
3569 |
*/
|
|
|
3570 |
EFSRV_EXPORT_C void RFile64::Write(TUint aPos,const TDesC8& aDes,TInt aLength,TRequestStatus& aStatus)
|
|
|
3571 |
{
|
|
|
3572 |
TRACE6(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2, MODULEUID, Session().Handle(), SubSessionHandle(), aPos, 0, aLength, &aStatus);
|
|
|
3573 |
|
|
|
3574 |
if(!(aPos + 1))
|
|
|
3575 |
{
|
|
|
3576 |
RSubSessionBase::SendReceive(EFsFileWrite,TIpcArgs(&aDes,aLength,aPos),aStatus);
|
|
|
3577 |
}
|
|
|
3578 |
else
|
|
|
3579 |
{
|
|
|
3580 |
TInt64 pos = aPos;
|
|
|
3581 |
TPckgC<TInt64> pkPos(pos);
|
|
|
3582 |
RSubSessionBase::SendReceive(EFsFileWrite|KIpcArgSlot2Desc,TIpcArgs(&aDes,aLength,&pkPos),aStatus);
|
|
|
3583 |
}
|
|
|
3584 |
TRACE0(UTF::EBorder, UTraceModuleEfsrv::EFileWrite2Return, MODULEUID);
|
|
|
3585 |
}
|
|
|
3586 |
#else
|
|
|
3587 |
EFSRV_EXPORT_C TInt RFile64::Open(RFs& /*aFs*/,const TDesC& /*aName*/,TUint /*aFileMode*/)
|
|
|
3588 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3589 |
EFSRV_EXPORT_C TInt RFile64::Create(RFs& /*aFs*/,const TDesC& /*aName*/,TUint /*aFileMode*/)
|
|
|
3590 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3591 |
EFSRV_EXPORT_C TInt RFile64::Replace(RFs& /*aFs*/,const TDesC& /*aName*/,TUint /*aFileMode*/)
|
|
|
3592 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3593 |
EFSRV_EXPORT_C TInt RFile64::Temp(RFs& /*aFs*/,const TDesC& /*aPath*/,TFileName& /*aName*/,TUint /*aFileMode*/)
|
|
|
3594 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3595 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromClient(const RMessage2& /*aMsg*/, TInt /*aFsHandleIndex*/, TInt /*aFileHandleIndex*/)
|
|
|
3596 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3597 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromServer(TInt /*aFsHandle*/, TInt /*aFileHandle*/)
|
|
|
3598 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3599 |
EFSRV_EXPORT_C TInt RFile64::AdoptFromCreator(TInt /*aFsHandleIndex*/, TInt /*aFileHandleIndex*/)
|
|
|
3600 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3601 |
EFSRV_EXPORT_C TInt RFile64::Read(TInt64 /*aPos*/, TDes8& /*aDes*/) const
|
|
|
3602 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3603 |
EFSRV_EXPORT_C void RFile64::Read(TInt64 /*aPos*/, TDes8& /*aDes*/, TRequestStatus& /*aStatus*/) const
|
|
|
3604 |
{Panic(ENotImplemented);}
|
|
|
3605 |
EFSRV_EXPORT_C TInt RFile64::Read(TInt64 /*aPos*/, TDes8& /*aDes*/, TInt /*aLength*/) const
|
|
|
3606 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3607 |
EFSRV_EXPORT_C void RFile64::Read(TInt64 /*aPos*/, TDes8& /*aDes*/, TInt /*aLength*/,TRequestStatus& /*aStatus*/) const
|
|
|
3608 |
{Panic(ENotImplemented);}
|
|
|
3609 |
EFSRV_EXPORT_C TInt RFile64::Write(TInt64 /*aPos*/, const TDesC8& /*aDes*/)
|
|
|
3610 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3611 |
EFSRV_EXPORT_C void RFile64::Write(TInt64 /*aPos*/, const TDesC8& /*aDes*/,TRequestStatus& /*aStatus*/)
|
|
|
3612 |
{Panic(ENotImplemented);}
|
|
|
3613 |
EFSRV_EXPORT_C TInt RFile64::Write(TInt64 /*aPos*/, const TDesC8& /*aDes*/, TInt /*aLength*/)
|
|
|
3614 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3615 |
EFSRV_EXPORT_C void RFile64::Write(TInt64 /*aPos*/, const TDesC8& /*aDes*/,TInt /*aLength*/,TRequestStatus& /*aStatus*/)
|
|
|
3616 |
{Panic(ENotImplemented);}
|
|
|
3617 |
EFSRV_EXPORT_C TInt RFile64::Seek(TSeek /*aMode*/, TInt64& /*aPos*/) const
|
|
|
3618 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3619 |
EFSRV_EXPORT_C TInt RFile64::Size(TInt64& /*aSize*/) const
|
|
|
3620 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3621 |
EFSRV_EXPORT_C TInt RFile64::SetSize(TInt64 /*aSize*/)
|
|
|
3622 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3623 |
EFSRV_EXPORT_C TInt RFile64::Lock(TInt64 /*aPos*/, TInt64 /*aLength*/) const
|
|
|
3624 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3625 |
EFSRV_EXPORT_C TInt RFile64::UnLock(TInt64 /*aPos*/, TInt64 /*aLength*/) const
|
|
|
3626 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3627 |
EFSRV_EXPORT_C TInt RFile64::Read(TUint /*aPos*/,TDes8& /*aDes*/) const
|
|
|
3628 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3629 |
EFSRV_EXPORT_C void RFile64::Read(TUint /*aPos*/,TDes8& /*aDes*/,TRequestStatus& /*aStatus*/) const
|
|
|
3630 |
{Panic(ENotImplemented);}
|
|
|
3631 |
EFSRV_EXPORT_C TInt RFile64::Read(TUint /*aPos*/,TDes8& /*aDes*/,TInt /*aLength*/) const
|
|
|
3632 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3633 |
EFSRV_EXPORT_C void RFile64::Read(TUint /*aPos*/,TDes8& /*aDes*/,TInt /*aLength*/,TRequestStatus& /*aStatus*/) const
|
|
|
3634 |
{Panic(ENotImplemented);}
|
|
|
3635 |
EFSRV_EXPORT_C TInt RFile64::Write(TUint /*aPos*/,const TDesC8& /*aDes*/)
|
|
|
3636 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3637 |
EFSRV_EXPORT_C void RFile64::Write(TUint /*aPos*/,const TDesC8& /*aDes*/,TRequestStatus& /*aStatus*/)
|
|
|
3638 |
{Panic(ENotImplemented);}
|
|
|
3639 |
EFSRV_EXPORT_C TInt RFile64::Write(TUint /*aPos*/,const TDesC8& /*aDes*/,TInt /*aLength*/)
|
|
|
3640 |
{Panic(ENotImplemented);return (KErrNotSupported);}
|
|
|
3641 |
EFSRV_EXPORT_C void RFile64::Write(TUint /*aPos*/, const TDesC8& /*aDes*/,TInt /*aLength*/,TRequestStatus& /*aStatus*/)
|
|
|
3642 |
{Panic(ENotImplemented);}
|
|
|
3643 |
#endif
|