sl@0: // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // f32\srom\sr_rom.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include "sr_std.h"
sl@0: 
sl@0: #if defined(_UNICODE)
sl@0: #define __SIZE(len) ((len)<<1)
sl@0: #else
sl@0: #define __SIZE(len) (len)
sl@0: #endif
sl@0: 
sl@0: const TRomHeader* CRom::iRomHeaderAddress=(TRomHeader*)UserSvr::RomHeaderAddress();
sl@0: 
sl@0: TInt TRomDir::BinarySearch(const TDesC& aName, TInt aLengthLimit, TInt aMode, TBool aDir) const
sl@0: 	{
sl@0: //	RDebug::Print(_L("BinarySearch %S ll=%d m=%d dir=%d"), &aName, aLengthLimit, aMode, aDir);
sl@0: 	const TRomDirSortInfo* s = SortInfo();
sl@0: 	TInt l = aDir ? 0 : s->iSubDirCount;
sl@0: 	TInt r = aDir ? s->iSubDirCount : s->iSubDirCount + s->iFileCount;
sl@0: 	TBool found = EFalse;
sl@0: 	while (r>l)
sl@0: 		{
sl@0: 		TInt m=(l+r)>>1;
sl@0: 		const TRomEntry* e = SortedEntry(m);
sl@0: 		TInt nl = Min(e->iNameLength, aLengthLimit);
sl@0: 		TPtrC en((const TText*)&e->iName[0], nl);
sl@0: 		TInt k = CRomMountCB::Compare(aName, en);
sl@0: 		if (k==0)
sl@0: 			{
sl@0: 			if (aMode == EArrayFindMode_Any)
sl@0: 				{
sl@0: //				RDebug::Printf("Found %d", m);
sl@0: 				return m;
sl@0: 				}
sl@0: 			found = ETrue;
sl@0: 			if (aMode == EArrayFindMode_First)
sl@0: 				r=m;
sl@0: 			else
sl@0: 				l=m+1;
sl@0: 			}
sl@0: 		else if (k>0)
sl@0: 			l=m+1;
sl@0: 		else
sl@0: 			r=m;
sl@0: 		}
sl@0: //	RDebug::Printf("Found=%d r=%d", found, r);
sl@0: 	return found ? r : KErrNotFound;
sl@0: 	}
sl@0: 
sl@0: // Navigate the path to find the leaf directory, starting at this.
sl@0: const TRomDir* TRomDir::FindLeafDir(const TDesC& aPath) const
sl@0: 	{
sl@0: 	TLex lex(aPath);
sl@0: 	TInt r;
sl@0: 	const TRomDir* d = this;
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		lex.Inc(); // Skip the file separator
sl@0: 		lex.Mark();
sl@0: 		r=lex.Remainder().Locate(KPathDelimiter);
sl@0: 		if (r==KErrNotFound)
sl@0: 			r=lex.Remainder().Length();
sl@0: 		if (r==0) // End of the path
sl@0: 			break;
sl@0: 		lex.Inc(r); // Set the token length
sl@0: 		TInt ix = d->BinarySearch(lex.MarkedToken(), KMaxTInt, EArrayFindMode_Any, ETrue);
sl@0: 		if (ix<0)
sl@0: 			return NULL;
sl@0: 		const TRomEntry* e = d->SortedEntry(ix);
sl@0: //		if (!(e->iAtt & KEntryAttDir))
sl@0: //			return NULL;
sl@0: 		d = (const TRomDir*)e->iAddressLin;
sl@0: 		}
sl@0: 	return d;
sl@0: 	}
sl@0: 
sl@0: LOCAL_C void Fault(TFault aFault)
sl@0: //
sl@0: // Report a fault in the rom file system.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Panic(_L("ROMFILESYS"),aFault);
sl@0: 	}
sl@0: 
sl@0: CRomMountCB::CRomMountCB(const CRom* aRom)
sl@0: //
sl@0: // Constructor
sl@0: //
sl@0: 	: iRom(aRom)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::Dismounted()
sl@0: //
sl@0: // Dummy implementation of pure virtual function
sl@0: //
sl@0: 	{}
sl@0: 
sl@0: void CRomMountCB::IsFileInRom(const TDesC& aName,TUint8*& aFileStart)
sl@0: //
sl@0: // Return the address of the file if it is in rom
sl@0: //
sl@0: 	{
sl@0: 	
sl@0: 	TLinAddr dir;
sl@0: 	TLinAddr entry=0;
sl@0: 	aFileStart=NULL;
sl@0: 	TRAPD(r,FindEntryL(aName,KEntryAttNormal,ETrue,dir,entry));
sl@0: 	if (r!=KErrNone)
sl@0: 		return;
sl@0: 	aFileStart=(TUint8*)((const TRomEntry*)entry)->iAddressLin;
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::Compare(const TDesC& aLeft, const TDesC& aRight)
sl@0: //
sl@0: //Compares two filenames.  Folds ASCII characters to uppercase
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	TInt ll = aLeft.Length();
sl@0: 	TInt rl = aRight.Length();
sl@0: 	TInt len = Min(ll, rl);
sl@0: 	const TText* l = aLeft.Ptr();
sl@0: 	const TText* r = aRight.Ptr();
sl@0: 	while (len--)
sl@0: 		{
sl@0: 		TText lc = *l++;
sl@0: 		TText rc = *r++;
sl@0: 		if (lc >= 'A' && lc <= 'Z')
sl@0: 			lc += ('a' - 'A');
sl@0: 		if (rc >= 'A' && rc <= 'Z')
sl@0: 			rc += ('a' - 'A');
sl@0: 		TInt x = lc - rc;
sl@0: 		if (x)
sl@0: 			return x;
sl@0: 		}
sl@0: 	// match up to end of shorter string, now compare lengths
sl@0: 	return ll - rl;
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::FindBinaryL(const TDesC& aName, TUint aAtt, TBool aAttKnown, TLinAddr aDir, TLinAddr& aEntry, TInt aError) const
sl@0: //
sl@0: //Identical to FindL, but uses binary search for faster performance.
sl@0: //However, can't deal with wildcards, whereas FindL can.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	//Although the value of aEntry is not used, we expect it to be zero,
sl@0: 	__ASSERT_DEBUG(aEntry==0,Fault(ERomInvalidArgument));
sl@0: 	const TRomDir* d = (const TRomDir*)aDir;
sl@0: 	TBool ix;
sl@0: 	if (aAttKnown)
sl@0: 		ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, aAtt & KEntryAttDir);
sl@0: 	else
sl@0: 		{
sl@0: 		//We don't know whether we're looking for a file or a directory, so
sl@0: 		//look through both
sl@0: 		ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, EFalse);
sl@0: 		if (ix<0 || !MatchEntryAtt(d->SortedEntry(ix)->iAtt, aAtt) )
sl@0: 			ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, ETrue);
sl@0: 		}
sl@0: 	if (ix>=0)
sl@0: 		{
sl@0: 		const TRomEntry* e = d->SortedEntry(ix);
sl@0: 		if (MatchEntryAtt(e->iAtt, aAtt))
sl@0: 			{
sl@0: 			aEntry = (TLinAddr)e;
sl@0: 			return;
sl@0: 			}
sl@0: 		}
sl@0: 	User::Leave(aError);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::FindL(const TDesC& aName, TUint anAtt, TLinAddr aDir, TLinAddr& anEntry, TInt anError) const
sl@0: //
sl@0: // Scan from aDir looking for aName.
sl@0: // If found return the result in anEntry.
sl@0: //
sl@0: 	{
sl@0: 	const TRomDir* pD = (const TRomDir*)aDir;
sl@0: 	const TRomEntry* pE;
sl@0: 	if (anEntry==0)
sl@0: 		pE = &pD->iEntry;
sl@0: 	else
sl@0: 		{
sl@0: 		pE = (const TRomEntry*)anEntry;
sl@0: 		pE = PtrAdd(pE, Align4(__SIZE(pE->iNameLength) + KRomEntrySize));
sl@0: 		}
sl@0: 	const TRomEntry* pEnd = PtrAdd(&pD->iEntry, pD->iSize);
sl@0: 	while (pE<pEnd)
sl@0: 		{
sl@0: 		TPtrC name = TPtrC((const TText*)&pE->iName[0], pE->iNameLength);
sl@0: 		if (name.MatchF(aName)!=KErrNotFound && MatchEntryAtt(pE->iAtt, anAtt))
sl@0: 			{
sl@0: 			anEntry = (TLinAddr)pE;
sl@0: 			return;
sl@0: 			}
sl@0: 		pE = PtrAdd(pE, Align4(__SIZE(pE->iNameLength) + KRomEntrySize));
sl@0: 		}
sl@0: 	User::Leave(anError);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::FindEntryL(const TDesC& aName, TUint anAtt, TBool aAttKnown, TLinAddr& aDir, TLinAddr& anEntry) const
sl@0: //
sl@0: // Locate an entry from its full path name.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // There is always a path delimiter
sl@0: 	const TRomDir* d = ((const TRomDir*)RomRootDirectory())->FindLeafDir(aName.Left(namePos));
sl@0: 	if (!d)
sl@0: 		User::Leave(KErrPathNotFound);
sl@0: 	anEntry=0;
sl@0: 	aDir = (TLinAddr)d;
sl@0: 	FindBinaryL(aName.Mid(namePos),anAtt,aAttKnown,aDir,anEntry,KErrNotFound);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::MountL(TBool /*aForceMount*/)
sl@0: //
sl@0: // Mount a media. Only allowed to leave with KErrNoMemory,KErrNotReady,KErrCorrupt,KErrUnknown.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	iUniqueID=0;
sl@0: 	iSize=(TUint)RomHeader().iUncompressedSize;
sl@0: 	SetVolumeName(_L("RomDrive").AllocL());
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::ReMount()
sl@0: //
sl@0: // Try and remount this media.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	Fault(ERomReMountNotSupported);
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::VolumeL(TVolumeInfo& aVolume) const
sl@0: //
sl@0: // Return the volume info.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	aVolume.iFree=0;
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::SetVolumeL(TDes& /*aName*/)
sl@0: //
sl@0: // Set the volume label.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::MkDirL(const TDesC& /*aName*/)
sl@0: //
sl@0: // Make a directory.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::RmDirL(const TDesC& /*aName*/)
sl@0: //
sl@0: // Remove a directory.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::DeleteL(const TDesC& /*aName*/)
sl@0: //
sl@0: // Delete a file.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::RenameL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/)
sl@0: //
sl@0: // Rename a file or directory.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::ReplaceL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/)
sl@0: //
sl@0: // Atomic replace.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::EntryL(const TDesC& aName,TEntry& anEntry) const
sl@0: //
sl@0: // Get entry details.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	TLinAddr dir;
sl@0: 	TLinAddr entry;
sl@0: 	FindEntryL(aName,KEntryAttMaskSupported,EFalse,dir,entry);
sl@0: 	const TRomEntry* pE = (const TRomEntry*)entry;
sl@0: 	anEntry.iAtt=pE->iAtt;
sl@0: 	anEntry.iSize=pE->iSize;
sl@0: 	anEntry.iModified=RomHeader().iTime;
sl@0: 	anEntry.iName.Des().Copy((TText*)&pE->iName[0],pE->iNameLength);
sl@0: 	ReadUidL(pE->iAddressLin,anEntry);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::SetEntryL(const TDesC& /*aName*/,const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/)
sl@0: //
sl@0: // Set entry details.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::FileOpenL(const TDesC& aName,TUint aMode,TFileOpen anOpen,CFileCB* aFile)
sl@0: //
sl@0: // Open a file on the current mount.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	if (aMode&EFileWrite)
sl@0: 		User::Leave(KErrAccessDenied);
sl@0: 	switch (anOpen)
sl@0: 		{
sl@0: 	case EFileCreate:
sl@0: 	case EFileReplace:
sl@0: 		User::Leave(KErrAccessDenied);
sl@0: 	case EFileOpen:
sl@0: 		break;
sl@0: 	default:
sl@0: 		User::Leave(KErrAccessDenied);
sl@0: 		}
sl@0: 	TLinAddr dir;
sl@0: 	TLinAddr entry;
sl@0: 	FindEntryL(aName,KEntryAttMustBeFile,ETrue,dir,entry);
sl@0: 	const TRomEntry* pE = (const TRomEntry*)entry;
sl@0: 	CRomFileCB& file=(*((CRomFileCB*)aFile));
sl@0: 	file.SetSize(pE->iSize);
sl@0: 	file.SetAtt(pE->iAtt);
sl@0: 	file.SetModified(RomHeader().iTime);
sl@0: 	file.SetBase((const TUint8*)pE->iAddressLin);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::DirOpenL(const TDesC& aName, CDirCB* aDir)
sl@0: //
sl@0: // Open a file on the current mount.
sl@0: //
sl@0: 	{
sl@0: 
sl@0:     TFileName fileName=aName;
sl@0:     TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // Exclude path delimiter
sl@0:     if (namePos==aName.Length())
sl@0:         fileName+=_L("*");
sl@0: 	const TRomDir* d = ((const TRomDir*)RomRootDirectory())->FindLeafDir(aName.Left(namePos));
sl@0: 	if (!d)
sl@0: 		User::Leave(KErrPathNotFound);
sl@0: 	CRomDirCB& dirCB = *(CRomDirCB*)aDir;
sl@0: 	dirCB.SetDir((TLinAddr)d, NULL, fileName.Mid(namePos));
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::RawReadL(TInt64 aPos,TInt aLength,const TAny* aDes,TInt anOffset,const RMessagePtr2& aMessage) const
sl@0: //
sl@0: // Read up to aLength data directly from the ROM
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	TUint romSize=RomHeader().iUncompressedSize;
sl@0: 	if (I64LOW(aPos)>=romSize)
sl@0: 		aMessage.WriteL(2,TPtrC8(NULL,0),anOffset);
sl@0: 	else
sl@0: 		{
sl@0: 		TInt len=Min((TInt)(romSize-I64LOW(aPos)),aLength);
sl@0: 		aMessage.WriteL(2,TPtrC8((TUint8*)RomHeader().iRomBase,len),anOffset);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::RawWriteL(TInt64 /*aPos*/,TInt /*aLength*/,const TAny* /*aDes*/,TInt /*anOffset*/,const RMessagePtr2& /*aMessage*/)
sl@0: //
sl@0: // Write aLength data to ROM (?)
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::ReadUidL(TLinAddr anAddr,TEntry& anEntry) const
sl@0: //
sl@0: // Read a uid if present.
sl@0: //
sl@0: 	{
sl@0: 	// Need to consider zero-length files (for which anAddr is 0)
sl@0: 	// and files too small to have a UID
sl@0: 	if (anEntry.iSize >= (TInt) sizeof(TCheckedUid))
sl@0: 		{
sl@0: 		TCheckedUid entryUid(TPtrC8((TUint8*)anAddr, sizeof(TCheckedUid)));
sl@0: 		anEntry.iType=entryUid.UidType();
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		anEntry.iType=KNullUid;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: void CRomMountCB::ReadSectionL(const TDesC& aName,TInt aPos,TAny* aTrg,TInt aLength,const RMessagePtr2& aMessage)
sl@0: 	{
sl@0: 
sl@0: 	__PRINT(Print(_L("CRomMountCB::ReadSectionL")));
sl@0: 			
sl@0: 	TLinAddr dir;
sl@0: 	TLinAddr entry;
sl@0: 	FindEntryL(aName,KEntryAttMustBeFile,ETrue,dir,entry);
sl@0: 	const TRomEntry* pE = (TRomEntry*)entry;
sl@0: 	TInt size=pE->iSize;
sl@0: 
sl@0: 	const TText8* baseAddress = (const TText8*)pE->iAddressLin;
sl@0: 	
sl@0: 	if (size>=(aPos+aLength)) //|| (size>aPos)
sl@0: 		{
sl@0: 		TPtrC8 section((baseAddress+aPos),aLength);
sl@0: 		aMessage.WriteL(0,section,0);
sl@0: 		}
sl@0: 	else if (size>aPos)
sl@0: 		{
sl@0: 		aLength=(size-aPos);
sl@0: 		TPtrC8 section((baseAddress+aPos),aLength);
sl@0: 		aMessage.WriteL(0,section,0);
sl@0: 		}	
sl@0: 	else
sl@0: 		User::Leave(KErrEof);
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: void CRomMountCB::GetShortNameL(const TDesC& /*aLongName*/,TDes& /*aShortName*/)
sl@0: //
sl@0: // Return the short name associated with aLongName
sl@0: // Assumes all rom names are 8.3
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrNotSupported);
sl@0: 	}
sl@0: 
sl@0: void CRomMountCB::GetLongNameL(const TDesC& /*aShortName*/,TDes& /*aLongName*/)
sl@0: //
sl@0: // Return the short name associated with aLongName
sl@0: // Assumes all rom names are 8.3
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrNotSupported);
sl@0: 	}	
sl@0: 
sl@0: TInt CRomMountCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput) 
sl@0: //
sl@0: // Access the specified interface; behaviour is interface-specific
sl@0: //
sl@0: 	{
sl@0: 	switch(aInterfaceId)
sl@0: 		{
sl@0: 		case (CMountCB::EFileAccessor):
sl@0: 			{
sl@0: 			((CMountCB::MFileAccessor*&) aInterface) = this;
sl@0: 			return KErrNone;
sl@0: 			}
sl@0: 		default:
sl@0: 			return (CMountCB::GetInterface(aInterfaceId,aInterface,aInput));
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::GetFileUniqueId(const TDesC& /* aName */, TInt64& aUniqueId)
sl@0: 	{
sl@0: 	// Get unique identifier for the file - for ROM File System will just return zero
sl@0: 	aUniqueId = MAKE_TINT64(0,0);
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::Spare3(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
sl@0: 	{
sl@0: 	return KErrNotSupported;
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::Spare2(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
sl@0: 	{
sl@0: 	return KErrNotSupported;
sl@0: 	}
sl@0: 
sl@0: TInt CRomMountCB::Spare1(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
sl@0: 	{
sl@0: 	return KErrNotSupported;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CRomFileCB::CRomFileCB(const CRom* aRom)
sl@0: //
sl@0: // Constructor
sl@0: //
sl@0: 	: iRom(aRom)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::ReadL(TInt aPos,TInt& aLength,const TAny* aTrg,const RMessagePtr2& aMessage)
sl@0: //
sl@0: // Read from the file.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	__PRINT(Print(_L("CRomFileCB::ReadL")));
sl@0: 
sl@0: 	if (aPos>=iSize)
sl@0: 		{
sl@0:         TPtrC8 nullBuf(NULL,0);
sl@0: 		aMessage.WriteL(0,nullBuf,0);
sl@0: 		aLength=0;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		TInt len=Min((iSize-aPos),aLength);
sl@0:         TPtrC8 romBuf(iBase+aPos,len);
sl@0: //		thread->WriteL(aTrg,romBuf,0);
sl@0: 		aMessage.WriteL(0,romBuf,0);
sl@0: 		aLength=len;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::WriteL(TInt /*aPos*/,TInt& /*aLength*/,const TAny* /*aDes*/,const RMessagePtr2& /*aMessage*/)
sl@0: //
sl@0: // Write to the file.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::RenameL(const TDesC& /*aDes*/)
sl@0: //
sl@0: // Rename the file.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::SetSizeL(TInt /*aSize*/)
sl@0: //
sl@0: // Set the file size.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::SetEntryL(const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/)
sl@0: //
sl@0: // Set the entry's attributes and modified time.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::FlushAllL()
sl@0: //
sl@0: // Commit any buffered date to the media.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: void CRomFileCB::FlushDataL()
sl@0: //
sl@0: // Commit any buffered date to the media.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	}
sl@0: 
sl@0: TInt CRomFileCB::Address(TInt& aPos) const
sl@0: //
sl@0: // Return address of the file at aPos. Default implementation.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	if (aPos>=iSize)
sl@0: 		return(KErrEof);
sl@0: 	aPos=(TInt)(iBase+aPos);
sl@0: 	return(KErrNone);
sl@0: 	}
sl@0: 
sl@0: CRomDirCB::CRomDirCB(const CRom* aRom)
sl@0: //
sl@0: // Constructor
sl@0: //
sl@0: 	: iRom(aRom)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CRomDirCB::~CRomDirCB()
sl@0: //
sl@0: // Destruct
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	delete iMatch;
sl@0: 	}
sl@0: 
sl@0: TBool CRomDirCB::MatchUid()
sl@0: //
sl@0: // Match the uid ?
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	if (iUidType[0]!=TUid::Null() || iUidType[1]!=TUid::Null() || iUidType[2]!=TUid::Null())
sl@0: 		return(ETrue);
sl@0: 	return(EFalse);
sl@0: 	}
sl@0: 
sl@0: LOCAL_C TBool CompareUid(const TUidType& aUidTrg, const TUidType& aUidSuitor)
sl@0: //
sl@0: // Compare the suitor to the target pattern
sl@0: //
sl@0: 	{
sl@0: 	
sl@0: 	if (aUidTrg[0]!=TUid::Null() && aUidTrg[0]!=aUidSuitor[0])
sl@0: 		return(EFalse);
sl@0: 	if (aUidTrg[1]!=TUid::Null() && aUidTrg[1]!=aUidSuitor[1])
sl@0: 		return(EFalse);
sl@0: 	if (aUidTrg[2]!=TUid::Null() && aUidTrg[2]!=aUidSuitor[2])
sl@0: 		return(EFalse);
sl@0: 	return(ETrue);
sl@0: 	}
sl@0: 
sl@0: void CRomDirCB::ReadL(TEntry& anEntry)
sl@0: //
sl@0: // Read the next entry from the directory.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	CRomMountCB& mount=(CRomMountCB&)Mount();
sl@0: 	const TRomEntry* pE;
sl@0: 	FOREVER
sl@0: 		{
sl@0: 		//
sl@0: 		//May be called with wildcards in the path, so we need
sl@0: 		//to call the slow, sequential FindL
sl@0: 		//
sl@0: 		if (!iPending)
sl@0: 			mount.FindL(*iMatch,iAtt,iDir,iNext,KErrEof);
sl@0: 		iPending=EFalse;
sl@0: 		pE = (const TRomEntry*)iNext;
sl@0: 		iEntry.iName.Des().Copy((TText*)&pE->iName[0],pE->iNameLength);
sl@0: 		iEntry.iAtt=pE->iAtt;
sl@0: 		iEntry.iSize=pE->iSize;
sl@0: 		iEntry.iModified=RomHeader().iTime;
sl@0: 		anEntry=iEntry;
sl@0: 		if (MatchUid())
sl@0: 			{
sl@0: 			mount.ReadUidL(pE->iAddressLin,anEntry);
sl@0: 			if (CompareUid(iUidType,anEntry.iType))
sl@0: 				break;
sl@0: 			}
sl@0: 		else
sl@0: 			break;
sl@0: 		}
sl@0: 	if (iAtt&KEntryAttAllowUid && (anEntry.iAtt&KEntryAttDir)==0 && MatchUid()==EFalse)
sl@0: 		mount.ReadUidL(pE->iAddressLin,anEntry);
sl@0: 	}
sl@0: 
sl@0: void CRomDirCB::SetDir(TLinAddr aDir,TLinAddr anEntry,const TDesC& aName)
sl@0: //
sl@0: // Set the directory and entry that we are on after open.
sl@0: //
sl@0: 	{
sl@0: 
sl@0:     iDir=aDir;
sl@0: 	iNext=anEntry;
sl@0: 	iMatch=aName.AllocL();
sl@0: 	iPending=(anEntry!=NULL);
sl@0: 	}
sl@0: 
sl@0: CRom::CRom()
sl@0: //
sl@0: // Constructor
sl@0: //
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CRom::~CRom()
sl@0: //
sl@0: // Destruct
sl@0: //
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: TInt CRom::Install()
sl@0: //
sl@0: // Install the file system.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	iVersion=TVersion(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber);
sl@0:     TPtrC name=_L("Rom");
sl@0: 	return(SetName(&name));
sl@0: 	}
sl@0: 
sl@0: CMountCB* CRom::NewMountL() const
sl@0: //
sl@0: // Create a new mount control block.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	return(new(ELeave) CRomMountCB(this));
sl@0: 	}
sl@0: 
sl@0: CFileCB* CRom::NewFileL() const
sl@0: //
sl@0: // Create a new file.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	return(new(ELeave) CRomFileCB(this));
sl@0: 	}
sl@0: 
sl@0: CDirCB* CRom::NewDirL() const
sl@0: //
sl@0: // Create a new directory lister.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	return(new(ELeave) CRomDirCB(this));
sl@0: 	}
sl@0: 
sl@0: CFormatCB* CRom::NewFormatL() const
sl@0: //
sl@0: // Create a new media formatter.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	User::Leave(KErrAccessDenied);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: void CRom::DriveInfo(TDriveInfo& anInfo,TInt /*aDriveNumber*/) const
sl@0: //
sl@0: // Return the drive info.
sl@0: //
sl@0: 	{
sl@0: 	anInfo.iDriveAtt=KDriveAttRom|KDriveAttInternal;
sl@0: 	anInfo.iMediaAtt=KMediaAttWriteProtected;
sl@0: 	anInfo.iType=EMediaRom;
sl@0: 	}
sl@0: 
sl@0: GLDEF_C void InstallRomFileSystemL()
sl@0: //
sl@0: // Create the ROM file system.
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	CFileSystem* pS=new(ELeave) CRom;
sl@0: 	CleanupStack::PushL(pS);
sl@0: 	User::LeaveIfError(InstallFileSystem(pS,RLibrary()));
sl@0: 	CleanupStack::Pop(1, pS);
sl@0: 	}
sl@0: 
sl@0: GLDEF_C const TRomHeader *RomHeader(CFileSystem *aFsys)
sl@0: //
sl@0: // Return the ROM header
sl@0: //
sl@0: 	{
sl@0: 
sl@0: 	return &((CRom *)aFsys)->RomHeader();
sl@0: 	}
sl@0: