diff -r 000000000000 -r 96e5fb8b040d userlibandfileserver/fileserver/sfsrv/cl_fraw.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/userlibandfileserver/fileserver/sfsrv/cl_fraw.cpp Thu Dec 17 09:24:54 2009 +0200 @@ -0,0 +1,197 @@ +// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies). +// All rights reserved. +// This component and the accompanying materials are made available +// under the terms of the License "Eclipse Public License v1.0" +// which accompanies this distribution, and is available +// at the URL "http://www.eclipse.org/legal/epl-v10.html". +// +// Initial Contributors: +// Nokia Corporation - initial contribution. +// +// Contributors: +// +// Description: +// f32\sfsrv\cl_fraw.cpp +// +// + +#include "cl_std.h" + + + + +/** +Opens a direct access channel to the disk. + +Other resources are disabled from accessing the disk until Close() is called. + +Note that if any resources are currently open on the disk, an error +is returned. + +@param aFs The file server session. +@param aDrive The drive containing the disk to be accessed. Specify a drive + in the range EDriveA to EDriveZ for drives A to Z. + +@return KErrNone, if successful; + KErrInUse is returned if any resources are currently open on the disk; + otherwise one of the other system-wide error codes. + +@capability TCB + +*/ +EXPORT_C TInt RRawDisk::Open(RFs& aFs,TInt aDrive) + { + if (!RFs::IsValidDrive(aDrive)) + return(KErrArgument); + iDrive=aDrive; + return(CreateSubSession(aFs,EFsRawDiskOpen,TIpcArgs(aDrive))); + } + + + + +/** +Closes the direct access channel to the disk, and allows other resources +to access the disk. +*/ +EXPORT_C void RRawDisk::Close() + { + CloseSubSession(EFsRawSubClose); + } + + + + +/** +Reads directly from the disk. + +The function reads a number of bytes into the specified descriptor from +the disk, beginning at the specified position. + +@param aPos The position on the disk at which to begin reading. +@param aDes The descriptor into which data is to be read. + On return aDes contains the data read. + +@panic User In debug builds, the media driver panics if aPos is larger than + the size of the physical media or if the end address, given by + aPos + the maximum length of the descriptor, is greater than + the size of the physical media. + +@return KErrNone, if successful, otherwise one of the other system-wide error + codes. + +@capability TCB + +*/ +EXPORT_C TInt RRawDisk::Read(TInt64 aPos,TDes8& aDes) + { + TInt maxLength = aDes.MaxLength(); + if (maxLength==0) + return(KErrNone); + TPtrC8 tBuf((TUint8*)&aPos,sizeof(TInt64)); + return(SendReceive(EFsRawDiskRead,TIpcArgs(&aDes,maxLength,&tBuf))); + } + + + + +/** +Writes directly to the disk. + +The function writes the contents of the specified descriptor to the +disk at position aPos. + +@param aPos The position at which to begin writing. +@param aDes The descriptor containing the data to be written to the disk. + +@panic User In debug builds, the media driver panics if aPos is larger than + the size of the physical media or if the end address, given by + aPos + the maximum length of the descriptor, is greater than + the size of the physical media. + +@return KErrNone, if successful, otherwise one of the other system-wide error + codes. + +@capability TCB + +*/ +EXPORT_C TInt RRawDisk::Write(TInt64 aPos,TDesC8& aDes) + { + TInt length = aDes.Length(); + if (length==0) + return(KErrNone); + TPtrC8 tBuf((TUint8*)&aPos,sizeof(TInt64)); + return(SendReceive(EFsRawDiskWrite,TIpcArgs(&aDes,length,&tBuf))); + } + + + + +// +// Old read / write methods left in to be BC +// +class _RRawDisk : public RRawDisk + { +public: + IMPORT_C TInt Read(TInt aPos,TDes8& aDes); + IMPORT_C TInt Write(TInt aPos,TDesC8& aDes); + }; + + + + +/** +Reads directly from the disk. + +The function reads a number of bytes into the specified descriptor from +the disk beginning at the specified position. + +@param aPos The position on the disk at which to begin reading. +@param aDes The descriptor into which data is to be read. On return, contains the + data read. The number of bytes read is the smaller of: + a) the total number of bytes on the disk minus aPos; + b) the maximum length of the descriptor. + +@return KErrNone, if successful, otherwise one of the other system-wide error + codes. + +@capability TCB +@deprecated +*/ +EXPORT_C TInt _RRawDisk::Read(TInt aPos,TDes8& aDes) + { + TInt maxLength = aDes.MaxLength(); + if (maxLength==0) + return(KErrNone); + TInt64 pos = MAKE_TINT64(0,aPos); + TPtrC8 tBuf((TUint8*)&pos,sizeof(TInt64)); + return(SendReceive(EFsRawDiskRead,TIpcArgs(&aDes,maxLength,&tBuf))); + } + + + + +/** +Writes directly to the disk. + +The function writes the contents of the specified descriptor to the +disk at position aPos. + +@param aPos The position at which to begin writing. +@param aDes The descriptor containing the data to be written to the disk. + +@return KErrNone, if successful, otherwise one of the other system-wide error + codes. + +@capability TCB +@deprecated +*/ +EXPORT_C TInt _RRawDisk::Write(TInt aPos,TDesC8& aDes) + { + TInt length = aDes.Length(); + if (length==0) + return(KErrNone); + TInt64 pos = MAKE_TINT64(0,aPos); + TPtrC8 tBuf((TUint8*)&pos,sizeof(TInt64)); + return(SendReceive(EFsRawDiskWrite,TIpcArgs(&aDes,length,&tBuf))); + }