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// Copyright (c) 2001-2009 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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//
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#include <e32std.h>
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#include <e32std_private.h>
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#include "sr_rofs.h"
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#include <rofs.h>
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void CRofs::Panic( TPanic aPanic )
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{
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_LIT( KCategory, "ROFSFSY" );
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User::Panic( KCategory, aPanic );
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}
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#ifdef _USE_TRUE_LRU_CACHE
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//***********************************************************
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//* Data Read Cache for Rofs
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//***********************************************************
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TCacheSegment::TCacheSegment()
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//
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// Constructor
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//
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: iPos(-1)
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{}
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void TCacheSegment::Set(TInt aPos)
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//
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// Set the diskPos of the data cached
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//
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{
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iPos=aPos;
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}
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//***********************************************************
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CRofsLruCache::CRofsLruCache(CRofsMountCB* aMount, TInt64 aMediaSize)
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//
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// Least recently used data cache
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//
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: iQue(_FOFF(TCacheSegment,iLink)), iMediaSize(aMediaSize)
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{
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iMount=aMount;
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__PRINT(_L("CLruCache::CLruCache()"));
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}
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CRofsLruCache::~CRofsLruCache()
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//
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// Free all data segments
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//
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{
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__PRINT(_L("CLruCache::~CLruCache()"));
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TDblQueIter<TCacheSegment> iter(iQue);
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while((TCacheSegment*)iter)
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{
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User::Free(iter++);
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}
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}
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TUint8* CRofsLruCache::Find(TInt aPos, TInt aLength)
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//
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// Find aPos in the cache or return NULL
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//
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{
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__PRINT(_L("CLruCache::Find()"));
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TDblQueIter<TCacheSegment> iter(iQue);
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TCacheSegment* data;
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while((data=iter++)!=NULL) //need to do a range check here
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{
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if(data->iPos < 0)
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continue;
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const TInt KEndOfSegment= data->iPos+ KSizeOfSegment;
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if(data->iPos <= aPos && (KEndOfSegment >=aPos))
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{
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if((aPos+aLength) > (KEndOfSegment))
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{
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data->iLink.Deque();
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iQue.AddLast(*data);
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return(NULL);
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}
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if(!iQue.IsFirst(data))
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{
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data->iLink.Deque();
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iQue.AddFirst(*data);
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}
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return(&data->Data()[aPos-data->iPos]);
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}
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}
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// If we got here, it means that we don't have it in cache at all
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return(NULL);
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}
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TUint8* CRofsLruCache::ReadL(TInt aPos, TInt aLength)
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//
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// Find aPos in the cache or read the data
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//
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{
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// Remember for Big size Nand the size of page can increase to 2K. Need to add this feature?
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__PRINT(_L("CLruCache::ReadL()"));
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// Search the cache
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TUint8* res=Find(aPos, aLength);
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if (res)
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return(res);
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// Didn't find in the cache, read data from media
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// Align to page boundaries
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TInt pagePos = aPos & ~(KPageSize-1);
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// Read from media
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// Buffer to accomodate two page of data.
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// We won't cache any read bigger than one page
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// Check if we have any segment available
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TCacheSegment* seg= iQue.Last();
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seg->iLink.Deque();
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seg->Set(pagePos);
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iQue.AddFirst(*seg);
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// ensure we don't read past end of media
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TInt cacheLen = (TInt) Min(iMediaSize - pagePos, KSizeOfSegment);
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TPtr8 dataBuf((seg->Data()), cacheLen);
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TInt ret = iMount->LocalDrive()->Read(pagePos,cacheLen,dataBuf);
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if (ret!=KErrNone)
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{
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User::Leave(ret);
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}
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return(&dataBuf[aPos & (KPageSize-1)]);
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}
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CRofsLruCache* CRofsLruCache::New(TInt aSegmentSize, CRofsMountCB* aMount, TInt64 aMediaSize)
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//
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// Create an LruList and one segment
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//
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{
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__PRINT(_L("CRofsLruCache::New()"));
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CRofsLruCache* lru=new CRofsLruCache(aMount, aMediaSize);
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if (lru==NULL)
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return(NULL);
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for(TInt i=0; i<KSizeOfCacheInPages;i++)
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{
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TCacheSegment* seg=(TCacheSegment*)User::Alloc(aSegmentSize+sizeof(TCacheSegment));
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if (seg==NULL)
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{
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delete lru;
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return(NULL);
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}
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Mem::FillZ(seg,aSegmentSize+sizeof(TCacheSegment));
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*seg=TCacheSegment();
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lru->iQue.AddFirst(*seg);
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}
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return(lru);
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}
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//***********************************************************
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//* Mount object
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//***********************************************************
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void CRofsMountCB::CacheReadL(TInt aPos, TInt aLength,const TAny* aDes,TInt anOffset, const RMessagePtr2& aMessage) const
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//
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// Do a cached read if possible else read from media and insert to cache
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//
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{
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__PRINT2(_L("CRofsMountCB::CacheReadL TAny* Pos 0x%x, Len %d"),aPos,aLength);
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// Don't cache anything more than a page long or if readinf into a file server cache buffer!
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if (((KSizeOfSegment/2) < aLength) || (aMessage.Handle() == KLocalMessageHandle))
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{
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TInt ret = LocalDrive()->Read(aPos,aLength,aDes, aMessage.Handle(), anOffset);
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if (ret!=KErrNone)
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{
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User::Leave(ret);
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}
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}
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else
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{
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TUint8* data =iDataCache->ReadL(aPos, aLength); //added length to enable cache to fill in the blanks
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TPtrC8 buf(data,aLength); //return buffer
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aMessage.WriteL(0,buf,anOffset);
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}
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}
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#endif
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CRofsMountCB::CRofsMountCB()
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//
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// Constructor
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//
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{
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}
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void CRofsMountCB::Dismounted()
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//
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// Dummy implementation of pure virtual function
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//
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{}
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void CRofsMountCB::MountL(TBool /*aForceMount*/)
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//
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// Mount a media.
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// Only allowed to leave with KErrNoMemory,KErrNotReady,KErrCorrupt,KErrUnknown.
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//
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{
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// create the local drive
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TInt r=CreateLocalDrive(GetLocalDrive(Drive().DriveNumber()));
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User::LeaveIfError(r);
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iUniqueID=0;
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TLocalDriveCapsV2Buf caps;
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User::LeaveIfError(LocalDrive()->Caps(caps));
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iMediaSize = caps().iSize;
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// Read ROFS image header
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r = LocalDrive()->Read( 0, sizeof(TRofsHeader), iHeader );
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__PRINT1(_L("CRofsMountCB::MountL, Reading Header %d"), r);
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if( KErrNone != r )
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{
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User::Leave( KErrNotReady );
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}
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r = CheckHeader();
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__PRINT1(_L("CRofsMountCB::MountL, Check Header %d"), r);
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User::LeaveIfError( r );
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r=CheckExtension();
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__PRINT1(_L("CRofsMountCB::MountL, Check Extension %d"), r);
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if(r!=KErrNone && r!=KErrNotFound)
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User::Leave(r);
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//
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// Construct the directory cache
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//
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iDirectoryCache = new(ELeave) CDirectoryCache( *this, *LocalDrive(), iHeader() );
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iDirectoryCache->ConstructL();
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#ifdef _USE_TRUE_LRU_CACHE
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//
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// Construct the data cache
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//
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iDataCache = CRofsLruCache::New(KSizeOfSegment,this, iMediaSize);
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if(!iDataCache)
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User::Leave(KErrNoMemory);
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#endif
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_LIT( KVolumeName, "Rofs" );
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SetVolumeName( TPtrC(KVolumeName).AllocL() );
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__PRINT(_L("CRofsMountCB::MountL, End of Mount"));
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}
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LOCAL_D TBool IsOverlapping( TUint aBase1, TUint aSize1, TUint aBase2, TUint aSize2 )
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//
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// Check files and directories are not overlapping
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//
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{
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TUint end1 = aBase1 + aSize1 - 1;
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TUint end2 = aBase2 + aSize2 -1;
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if( aBase1 == aBase2 || end1 < aBase1 || end2 < aBase2 )
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{
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return ETrue; // not necessarily overlapping, but they wrap which is an error
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}
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if( end1 < aBase2 || end2 < aBase1 )
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{
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return EFalse;
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}
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return ETrue;
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}
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TInt CRofsMountCB::CheckExtension()
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//
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// Check for a Rofs extension and the end of the primary rofs image
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//
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{
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__PRINT(_L("CRofsMountCB::CheckExtension, Looking for Extension"));
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const TUint8 KRofsHeaderId[4] = {'R', 'O', 'F', 'x' };
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const TRofsHeader& h = ((CRofsMountCB*)this)->iHeader();
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//check there is possibly enough room to have an extension
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if( MAKE_TINT64(0,h.iMaxImageSize) + sizeof(TRofsHeader) >= iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, media size too small for extension %x"), I64LOW(iMediaSize) );
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return KErrNotFound;
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}
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TPckgBuf<TRofsHeader> phExt;
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TInt r = LocalDrive()->Read((TInt)h.iMaxImageSize, sizeof(TRofsHeader), phExt);
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if( KErrNone != r )
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return r;
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const TRofsHeader& hExt = phExt();
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if( 0 != Mem::Compare( KRofsHeaderId, 4, hExt.iIdentifier, 4 ) )
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{
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__PRINT(_L("CRofsMountCB::CheckExtension, [ROFx] ID missing"));
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return KErrNotFound;
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}
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if( hExt.iRofsFormatVersion < KEarliestSupportedFormatVersion
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|| hExt.iRofsFormatVersion > KLatestSupportedFormatVersion )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, unsupported version %x"), h.iRofsFormatVersion );
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return KErrNotSupported;
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}
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if( MAKE_TINT64(0,hExt.iImageSize) > iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, image size overflow %x"), h.iImageSize );
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return KErrCorrupt;
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}
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if( MAKE_TINT64(0,hExt.iDirTreeOffset) > iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, dir tree offset %x out-of-range"), h.iDirTreeOffset );
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return KErrCorrupt;
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}
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if( MAKE_TINT64(0,hExt.iDirTreeOffset) + hExt.iDirTreeSize > iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, dir tree size %x overflow"), h.iDirTreeSize );
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return KErrCorrupt;
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}
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if( MAKE_TINT64(0,hExt.iDirFileEntriesOffset) > iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, file entries offset %x out-of-range"), h.iDirFileEntriesOffset );
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return KErrCorrupt;
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}
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if( MAKE_TINT64(0,hExt.iDirFileEntriesOffset) + MAKE_TINT64(0,h.iDirFileEntriesSize) > iMediaSize )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, file entries size %x overflow"), h.iDirFileEntriesSize );
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return KErrCorrupt;
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}
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if( IsOverlapping( hExt.iDirTreeOffset, hExt.iDirTreeSize,
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hExt.iDirFileEntriesOffset, hExt.iDirFileEntriesSize ) )
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{
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__PRINT1(_L("CRofsMountCB::CheckExtension, dir & file entries overlap"), h.iDirTreeSize );
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return KErrCorrupt;
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}
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Mem::Copy(&iHeader, &phExt, sizeof(TRofsHeader));
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|
368 |
__PRINT(_L("CRofsMountCB::CheckExtension, Valid Extension found"));
|
|
|
369 |
return KErrNone;
|
|
|
370 |
}
|
|
|
371 |
|
|
|
372 |
TInt CRofsMountCB::CheckHeader() const
|
|
|
373 |
//
|
|
|
374 |
// Returns KErrNone if the TRofsHeader looks ok, KErrCorrupt if not
|
|
|
375 |
//
|
|
|
376 |
{
|
|
|
377 |
const TUint8 KRofsHeaderId[4] = {'R', 'O', 'F', 'S' };
|
|
|
378 |
|
|
|
379 |
// nasty cast required until TPckgBuf gains a const accessor member
|
|
|
380 |
const TRofsHeader& h = ((CRofsMountCB*)this)->iHeader();
|
|
|
381 |
if( 0 != Mem::Compare( KRofsHeaderId, 4, h.iIdentifier, 4 ) )
|
|
|
382 |
{
|
|
|
383 |
__PRINT(_L("CRofsMountCB::CheckHeader, [ROFS] ID missing"));
|
|
|
384 |
return KErrCorrupt;
|
|
|
385 |
}
|
|
|
386 |
|
|
|
387 |
if( h.iRofsFormatVersion < KEarliestSupportedFormatVersion
|
|
|
388 |
|| h.iRofsFormatVersion > KLatestSupportedFormatVersion )
|
|
|
389 |
{
|
|
|
390 |
__PRINT1(_L("CRofsMountCB::CheckHeader, unsupported version %x"), h.iRofsFormatVersion );
|
|
|
391 |
return KErrNotSupported;
|
|
|
392 |
}
|
|
|
393 |
|
|
|
394 |
if( MAKE_TINT64(0,h.iImageSize) > iMediaSize )
|
|
|
395 |
{
|
|
|
396 |
__PRINT1(_L("CRofsMountCB::CheckHeader, image size overflow %x"), h.iImageSize );
|
|
|
397 |
return KErrCorrupt;
|
|
|
398 |
}
|
|
|
399 |
|
|
|
400 |
if( MAKE_TINT64(0,h.iDirTreeOffset) > iMediaSize )
|
|
|
401 |
{
|
|
|
402 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir tree offset %x out-of-range"), h.iDirTreeOffset );
|
|
|
403 |
return KErrCorrupt;
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
if(TInt64(h.iDirTreeOffset + h.iDirTreeSize) > iMediaSize )
|
|
|
407 |
{
|
|
|
408 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir tree size %x overflow"), h.iDirTreeSize );
|
|
|
409 |
return KErrCorrupt;
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
if( MAKE_TINT64(0,h.iDirFileEntriesOffset) > iMediaSize )
|
|
|
413 |
{
|
|
|
414 |
__PRINT1(_L("CRofsMountCB::CheckHeader, file entries offset %x out-of-range"), h.iDirFileEntriesOffset );
|
|
|
415 |
return KErrCorrupt;
|
|
|
416 |
}
|
|
|
417 |
|
|
|
418 |
if( TInt64(h.iDirFileEntriesOffset + h.iDirFileEntriesSize) > iMediaSize )
|
|
|
419 |
{
|
|
|
420 |
__PRINT1(_L("CRofsMountCB::CheckHeader, file entries size %x overflow"), h.iDirFileEntriesSize );
|
|
|
421 |
return KErrCorrupt;
|
|
|
422 |
}
|
|
|
423 |
|
|
|
424 |
if( IsOverlapping( h.iDirTreeOffset, h.iDirTreeSize,
|
|
|
425 |
h.iDirFileEntriesOffset, h.iDirFileEntriesSize ) )
|
|
|
426 |
{
|
|
|
427 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir & file entries overlap"), h.iDirTreeSize );
|
|
|
428 |
return KErrCorrupt;
|
|
|
429 |
}
|
|
|
430 |
|
|
|
431 |
return KErrNone;
|
|
|
432 |
}
|
|
|
433 |
|
|
|
434 |
|
|
|
435 |
TInt CRofsMountCB::ReMount()
|
|
|
436 |
//
|
|
|
437 |
// Try and remount this media.
|
|
|
438 |
//
|
|
|
439 |
{
|
|
|
440 |
|
|
|
441 |
CRofs::Panic( CRofs::EPanicRemountNotSupported );
|
|
|
442 |
return(0);
|
|
|
443 |
}
|
|
|
444 |
|
|
|
445 |
void CRofsMountCB::VolumeL(TVolumeInfo& aVolume) const
|
|
|
446 |
//
|
|
|
447 |
// Return the volume info.
|
|
|
448 |
//
|
|
|
449 |
{
|
|
|
450 |
|
|
|
451 |
aVolume.iFree=0;
|
|
|
452 |
}
|
|
|
453 |
|
|
|
454 |
|
|
|
455 |
void CRofsMountCB::SetVolumeL(TDes& /*aName*/)
|
|
|
456 |
//
|
|
|
457 |
// Set the volume label.
|
|
|
458 |
//
|
|
|
459 |
{
|
|
|
460 |
|
|
|
461 |
User::Leave(KErrAccessDenied);
|
|
|
462 |
}
|
|
|
463 |
|
|
|
464 |
void CRofsMountCB::MkDirL(const TDesC& /*aName*/)
|
|
|
465 |
//
|
|
|
466 |
// Make a directory.
|
|
|
467 |
//
|
|
|
468 |
{
|
|
|
469 |
|
|
|
470 |
User::Leave(KErrAccessDenied);
|
|
|
471 |
}
|
|
|
472 |
|
|
|
473 |
void CRofsMountCB::RmDirL(const TDesC& /*aName*/)
|
|
|
474 |
//
|
|
|
475 |
// Remove a directory.
|
|
|
476 |
//
|
|
|
477 |
{
|
|
|
478 |
|
|
|
479 |
User::Leave(KErrAccessDenied);
|
|
|
480 |
}
|
|
|
481 |
|
|
|
482 |
void CRofsMountCB::DeleteL(const TDesC& /*aName*/)
|
|
|
483 |
//
|
|
|
484 |
// Delete a file.
|
|
|
485 |
//
|
|
|
486 |
{
|
|
|
487 |
|
|
|
488 |
User::Leave(KErrAccessDenied);
|
|
|
489 |
}
|
|
|
490 |
|
|
|
491 |
void CRofsMountCB::RenameL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/)
|
|
|
492 |
//
|
|
|
493 |
// Rename a file or directory.
|
|
|
494 |
//
|
|
|
495 |
{
|
|
|
496 |
|
|
|
497 |
User::Leave(KErrAccessDenied);
|
|
|
498 |
}
|
|
|
499 |
|
|
|
500 |
void CRofsMountCB::ReplaceL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/)
|
|
|
501 |
//
|
|
|
502 |
// Atomic replace.
|
|
|
503 |
//
|
|
|
504 |
{
|
|
|
505 |
|
|
|
506 |
User::Leave(KErrAccessDenied);
|
|
|
507 |
}
|
|
|
508 |
|
|
|
509 |
void CRofsMountCB::EntryL(const TDesC& aName,TEntry& aEntry) const
|
|
|
510 |
//
|
|
|
511 |
// Get entry details.
|
|
|
512 |
//
|
|
|
513 |
{
|
|
|
514 |
const TRofsDir* dir;
|
|
|
515 |
const TRofsEntry* entry = NULL;
|
|
|
516 |
iDirectoryCache->FindGeneralEntryL( aName, KEntryAttMaskSupported, dir, entry);
|
|
|
517 |
aEntry.iAtt = entry->iAtt;
|
|
|
518 |
aEntry.iSize = entry->iFileSize;
|
|
|
519 |
aEntry.iModified = ((TPckgBuf<TRofsHeader>&)(iHeader))().iTime;
|
|
|
520 |
aEntry.iName.Des().Copy( CDirectoryCache::NameAddress(entry), entry->iNameLength);
|
|
|
521 |
ReadUidL( entry->iFileAddress, aEntry, (TRofsEntry*)entry );
|
|
|
522 |
}
|
|
|
523 |
|
|
|
524 |
void CRofsMountCB::ReadUidL( TUint /*aMediaOffset*/, TEntry& aEntry, TRofsEntry* aRofsEntry) const
|
|
|
525 |
//
|
|
|
526 |
// Internal function to read a uid if present.
|
|
|
527 |
//
|
|
|
528 |
{
|
|
|
529 |
|
|
|
530 |
TBuf8<sizeof(TCheckedUid)> uidBuf;
|
|
|
531 |
uidBuf.SetLength(sizeof(TCheckedUid));
|
|
|
532 |
Mem::Copy(&uidBuf[0], &aRofsEntry->iUids[0],sizeof(TCheckedUid));
|
|
|
533 |
|
|
|
534 |
TCheckedUid uid(uidBuf);
|
|
|
535 |
aEntry.iType = uid.UidType();
|
|
|
536 |
}
|
|
|
537 |
|
|
|
538 |
void CRofsMountCB::SetEntryL(const TDesC& /*aName*/,const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/)
|
|
|
539 |
//
|
|
|
540 |
// Set entry details.
|
|
|
541 |
//
|
|
|
542 |
{
|
|
|
543 |
|
|
|
544 |
User::Leave(KErrAccessDenied);
|
|
|
545 |
}
|
|
|
546 |
|
|
|
547 |
void CRofsMountCB::FileOpenL(const TDesC& aName,TUint aMode,TFileOpen aOpen,CFileCB* aFile)
|
|
|
548 |
//
|
|
|
549 |
// Open a file on the current mount.
|
|
|
550 |
//
|
|
|
551 |
{
|
|
|
552 |
|
|
|
553 |
if ( aMode & EFileWrite )
|
|
|
554 |
{
|
|
|
555 |
User::Leave(KErrAccessDenied);
|
|
|
556 |
}
|
|
|
557 |
|
|
|
558 |
if( EFileOpen != aOpen )
|
|
|
559 |
{
|
|
|
560 |
User::Leave(KErrAccessDenied);
|
|
|
561 |
}
|
|
|
562 |
|
|
|
563 |
const TRofsEntry* entry;
|
|
|
564 |
iDirectoryCache->FindFileEntryL(aName, entry);
|
|
|
565 |
|
|
|
566 |
CRofsFileCB& file=(*((CRofsFileCB*)aFile));
|
|
|
567 |
file.SetSize( entry->iFileSize );
|
|
|
568 |
file.SetAtt( entry->iAtt );
|
|
|
569 |
file.SetAttExtra( entry->iAttExtra );
|
|
|
570 |
file.SetModified( iHeader().iTime );
|
|
|
571 |
file.SetMediaBase( entry->iFileAddress );
|
|
|
572 |
}
|
|
|
573 |
|
|
|
574 |
void CRofsMountCB::DirOpenL(const TDesC& aName,CDirCB* aDir)
|
|
|
575 |
//
|
|
|
576 |
// Open a directory on the current mount.
|
|
|
577 |
//
|
|
|
578 |
{
|
|
|
579 |
|
|
|
580 |
TFileName fileName=aName;
|
|
|
581 |
TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // Exclude path delimiter
|
|
|
582 |
if (namePos==aName.Length())
|
|
|
583 |
{
|
|
|
584 |
fileName+=_L("*");
|
|
|
585 |
}
|
|
|
586 |
|
|
|
587 |
const TRofsDir* dir;
|
|
|
588 |
iDirectoryCache->FindDirectoryEntryL( fileName.Left(namePos), dir );
|
|
|
589 |
|
|
|
590 |
CRofsDirCB& dirCB=(*((CRofsDirCB*)aDir));
|
|
|
591 |
dirCB.SetDir( dir, fileName.Mid(namePos), iHeader().iTime );
|
|
|
592 |
dirCB.SetCache( iDirectoryCache );
|
|
|
593 |
}
|
|
|
594 |
|
|
|
595 |
void CRofsMountCB::RawReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,TInt anOffset,const RMessagePtr2& aMessage) const
|
|
|
596 |
//
|
|
|
597 |
// Read up to aLength data directly from the media
|
|
|
598 |
//
|
|
|
599 |
{
|
|
|
600 |
if (aPos >= iMediaSize || aPos < 0 )
|
|
|
601 |
{
|
|
|
602 |
if (aMessage.Handle() == KLocalMessageHandle)
|
|
|
603 |
((TPtr8* )aTrg)->SetLength(0);
|
|
|
604 |
else
|
|
|
605 |
aMessage.WriteL(0,TPtrC8(NULL,0),anOffset);
|
|
|
606 |
}
|
|
|
607 |
else
|
|
|
608 |
{
|
|
|
609 |
TInt len=Min( (TInt)(I64LOW(iMediaSize)-I64LOW(aPos)),aLength);
|
|
|
610 |
|
|
|
611 |
#ifdef _USE_TRUE_LRU_CACHE
|
|
|
612 |
|
|
|
613 |
__PRINT2(_L("ROFS::RawReadL() pos=%d len=%d"),aPos, aLength);
|
|
|
614 |
CacheReadL( I64LOW(aPos), len, aTrg, anOffset, aMessage );
|
|
|
615 |
#else
|
|
|
616 |
TInt r = LocalDrive()->Read( aPos, len, aTrg, aMessage.Handle(), anOffset );
|
|
|
617 |
User::LeaveIfError( r );
|
|
|
618 |
#endif
|
|
|
619 |
}
|
|
|
620 |
}
|
|
|
621 |
|
|
|
622 |
void CRofsMountCB::RawWriteL(TInt64 /*aPos*/,TInt /*aLength*/,const TAny* /*aSrc*/,TInt /*anOffset*/,const RMessagePtr2& /*aMessage*/)
|
|
|
623 |
//
|
|
|
624 |
// Write aLength data to ROM (?)
|
|
|
625 |
//
|
|
|
626 |
{
|
|
|
627 |
|
|
|
628 |
User::Leave(KErrAccessDenied);
|
|
|
629 |
}
|
|
|
630 |
|
|
|
631 |
|
|
|
632 |
void CRofsMountCB::ReadSectionL(const TDesC& aName,TInt aPos,TAny* aTrg,TInt aLength,const RMessagePtr2& aMessage)
|
|
|
633 |
//
|
|
|
634 |
// Note: this function will need some modification to support compresed files
|
|
|
635 |
//
|
|
|
636 |
{
|
|
|
637 |
|
|
|
638 |
__PRINT(_L("CRofsMountCB::ReadSectionL"));
|
|
|
639 |
|
|
|
640 |
const TRofsEntry* entry;
|
|
|
641 |
iDirectoryCache->FindFileEntryL(aName, entry);
|
|
|
642 |
|
|
|
643 |
TInt size = entry->iFileSize;
|
|
|
644 |
TInt len = 0; // initialise to stop a warning
|
|
|
645 |
if ( size >= (aPos+aLength) )
|
|
|
646 |
{
|
|
|
647 |
len = aLength;
|
|
|
648 |
}
|
|
|
649 |
else if ( size > aPos )
|
|
|
650 |
{
|
|
|
651 |
len=(size-aPos);
|
|
|
652 |
}
|
|
|
653 |
else
|
|
|
654 |
{
|
|
|
655 |
User::Leave(KErrEof);
|
|
|
656 |
}
|
|
|
657 |
|
|
|
658 |
TInt64 pos64( (TUint)entry->iFileAddress);
|
|
|
659 |
pos64 += aPos;
|
|
|
660 |
|
|
|
661 |
#ifdef _USE_TRUE_LRU_CACHE
|
|
|
662 |
|
|
|
663 |
__PRINT2(_L("ROFS::ReadSectionL() pos=%d len=%d"),I64LOW(pos64), aLength);
|
|
|
664 |
CacheReadL( I64LOW(pos64), len, aTrg, 0, aMessage );
|
|
|
665 |
#else
|
|
|
666 |
TInt r = LocalDrive()->Read( pos64, len, aTrg, aMessage.Handle(), 0 );
|
|
|
667 |
User::LeaveIfError( r );
|
|
|
668 |
#endif
|
|
|
669 |
}
|
|
|
670 |
|
|
|
671 |
|
|
|
672 |
void CRofsMountCB::GetShortNameL(const TDesC& /*aLongName*/,TDes& /*aShortName*/)
|
|
|
673 |
//
|
|
|
674 |
// Return the short name associated with aLongName
|
|
|
675 |
// Assumes all rom names are 8.3
|
|
|
676 |
//
|
|
|
677 |
{
|
|
|
678 |
|
|
|
679 |
User::Leave(KErrNotSupported);
|
|
|
680 |
}
|
|
|
681 |
|
|
|
682 |
void CRofsMountCB::GetLongNameL(const TDesC& /*aShortName*/,TDes& /*aLongName*/)
|
|
|
683 |
//
|
|
|
684 |
// Return the short name associated with aLongName
|
|
|
685 |
// Assumes all rom names are 8.3
|
|
|
686 |
//
|
|
|
687 |
{
|
|
|
688 |
|
|
|
689 |
User::Leave(KErrNotSupported);
|
|
|
690 |
}
|
|
|
691 |
|
|
|
692 |
|
|
|
693 |
TInt CRofsMountCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput)
|
|
|
694 |
{
|
|
|
695 |
TInt r= KErrNone;
|
|
|
696 |
switch(aInterfaceId)
|
|
|
697 |
{
|
|
|
698 |
case (CMountCB::EFileAccessor):
|
|
|
699 |
((CMountCB::MFileAccessor*&) aInterface) = this;
|
|
|
700 |
break;
|
|
|
701 |
|
|
|
702 |
case CMountCB::ELocalBufferSupport:
|
|
|
703 |
return LocalDrive()->LocalBufferSupport();
|
|
|
704 |
|
|
|
705 |
case (CMountCB::EAddToCompositeMount):
|
|
|
706 |
iMountId = (TUint8)((TInt)aInput);
|
|
|
707 |
break;
|
|
|
708 |
|
|
|
709 |
default:
|
|
|
710 |
r=KErrNotSupported;
|
|
|
711 |
}
|
|
|
712 |
return r;
|
|
|
713 |
}
|
|
|
714 |
|
|
|
715 |
TInt CRofsMountCB::GetFileUniqueId(const TDesC& aName, TInt64& aUniqueId)
|
|
|
716 |
{
|
|
|
717 |
// Get unique identifier for the file
|
|
|
718 |
const TRofsEntry* entry=NULL;
|
|
|
719 |
TInt err;
|
|
|
720 |
TRAP(err,iDirectoryCache->FindFileEntryL(aName, entry));
|
|
|
721 |
if(err!=KErrNone)
|
|
|
722 |
return err;
|
|
|
723 |
aUniqueId = MAKE_TINT64(0,entry->iFileAddress);
|
|
|
724 |
return KErrNone;
|
|
|
725 |
}
|
|
|
726 |
|
|
|
727 |
TInt CRofsMountCB::Spare3(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
|
|
|
728 |
{
|
|
|
729 |
return KErrNotSupported;
|
|
|
730 |
}
|
|
|
731 |
|
|
|
732 |
TInt CRofsMountCB::Spare2(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
|
|
|
733 |
{
|
|
|
734 |
return KErrNotSupported;
|
|
|
735 |
}
|
|
|
736 |
|
|
|
737 |
TInt CRofsMountCB::Spare1(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/)
|
|
|
738 |
{
|
|
|
739 |
return KErrNotSupported;
|
|
|
740 |
}
|
|
|
741 |
|
|
|
742 |
|
|
|
743 |
//***********************************************************
|
|
|
744 |
//* File object
|
|
|
745 |
//***********************************************************
|
|
|
746 |
|
|
|
747 |
|
|
|
748 |
|
|
|
749 |
CRofsFileCB::CRofsFileCB()
|
|
|
750 |
//
|
|
|
751 |
// Constructor
|
|
|
752 |
//
|
|
|
753 |
{
|
|
|
754 |
}
|
|
|
755 |
|
|
|
756 |
|
|
|
757 |
void CRofsFileCB::ReadL(TInt64 aPos,TInt& aLength,TDes8* aDes,const RMessagePtr2& aMessage, TInt aOffset)
|
|
|
758 |
//
|
|
|
759 |
// Read from the file.
|
|
|
760 |
//
|
|
|
761 |
{
|
|
|
762 |
__PRINT(_L("CRofsFileCB::ReadL"));
|
|
|
763 |
|
|
|
764 |
// for now, convert pos to a TInt
|
|
|
765 |
if (aPos > KMaxTInt)
|
|
|
766 |
User::Leave(KErrNotSupported);
|
|
|
767 |
TInt pos = (TInt) aPos;
|
|
|
768 |
|
|
|
769 |
if (pos>=iSize)
|
|
|
770 |
{
|
|
|
771 |
if (aMessage.Handle() == KLocalMessageHandle)
|
|
|
772 |
((TPtr8* )aDes)->SetLength(0);
|
|
|
773 |
else
|
|
|
774 |
aMessage.WriteL(0,TPtrC8(NULL,0),aOffset);
|
|
|
775 |
aLength=0;
|
|
|
776 |
}
|
|
|
777 |
else
|
|
|
778 |
{
|
|
|
779 |
TInt len=Min((iSize-pos),aLength);
|
|
|
780 |
|
|
|
781 |
#ifdef _USE_TRUE_LRU_CACHE
|
|
|
782 |
|
|
|
783 |
__PRINT2(_L("ROFS::ReadL() pos=%d len=%d"),pos, len);
|
|
|
784 |
RofsMount().CacheReadL( pos + iMediaBase, len, aDes, aOffset, aMessage );
|
|
|
785 |
#else
|
|
|
786 |
TInt r = RofsMount().LocalDrive()->Read( pos + iMediaBase, len, aDes, aMessage.Handle(),aOffset) ;
|
|
|
787 |
User::LeaveIfError( r );
|
|
|
788 |
#endif
|
|
|
789 |
aLength=len;
|
|
|
790 |
}
|
|
|
791 |
}
|
|
|
792 |
|
|
|
793 |
void CRofsFileCB::ReadL(TInt aPos,TInt& aLength,const TAny* aDes,const RMessagePtr2& aMessage)
|
|
|
794 |
{
|
|
|
795 |
ReadL(TInt64(aPos),aLength,(TDes8*) aDes,aMessage, 0);
|
|
|
796 |
}
|
|
|
797 |
|
|
|
798 |
void CRofsFileCB::WriteL(TInt64 /*aPos*/,TInt& /*aLength*/,const TDesC8* /*aDes*/,const RMessagePtr2& /*aMessage*/, TInt /*aOffset*/)
|
|
|
799 |
//
|
|
|
800 |
// Write to the file.
|
|
|
801 |
//
|
|
|
802 |
{
|
|
|
803 |
User::Leave(KErrAccessDenied);
|
|
|
804 |
}
|
|
|
805 |
|
|
|
806 |
void CRofsFileCB::WriteL(TInt /*aPos*/,TInt& /*aLength*/,const TAny* /*aDes*/,const RMessagePtr2& /*aMessage*/)
|
|
|
807 |
{
|
|
|
808 |
User::Leave(KErrAccessDenied);
|
|
|
809 |
}
|
|
|
810 |
|
|
|
811 |
void CRofsFileCB::RenameL(const TDesC& /*aDes*/)
|
|
|
812 |
//
|
|
|
813 |
// Rename the file.
|
|
|
814 |
//
|
|
|
815 |
{
|
|
|
816 |
User::Leave(KErrAccessDenied);
|
|
|
817 |
}
|
|
|
818 |
|
|
|
819 |
void CRofsFileCB::SetSizeL(TInt64 /*aSize*/)
|
|
|
820 |
//
|
|
|
821 |
// Set the file size.
|
|
|
822 |
//
|
|
|
823 |
{
|
|
|
824 |
User::Leave(KErrAccessDenied);
|
|
|
825 |
}
|
|
|
826 |
|
|
|
827 |
void CRofsFileCB::SetSizeL(TInt /*aSize*/)
|
|
|
828 |
//
|
|
|
829 |
// Set the file size.
|
|
|
830 |
//
|
|
|
831 |
{
|
|
|
832 |
User::Leave(KErrAccessDenied);
|
|
|
833 |
}
|
|
|
834 |
|
|
|
835 |
void CRofsFileCB::SetEntryL(const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/)
|
|
|
836 |
//
|
|
|
837 |
// Set the entry's attributes and modified time.
|
|
|
838 |
//
|
|
|
839 |
{
|
|
|
840 |
User::Leave(KErrAccessDenied);
|
|
|
841 |
}
|
|
|
842 |
|
|
|
843 |
void CRofsFileCB::FlushAllL()
|
|
|
844 |
//
|
|
|
845 |
// Commit any buffered date to the media.
|
|
|
846 |
//
|
|
|
847 |
{
|
|
|
848 |
User::Leave(KErrAccessDenied);
|
|
|
849 |
}
|
|
|
850 |
|
|
|
851 |
void CRofsFileCB::FlushDataL()
|
|
|
852 |
//
|
|
|
853 |
// Commit any buffered date to the media.
|
|
|
854 |
//
|
|
|
855 |
{
|
|
|
856 |
User::Leave(KErrAccessDenied);
|
|
|
857 |
}
|
|
|
858 |
|
|
|
859 |
|
|
|
860 |
|
|
|
861 |
//***********************************************************
|
|
|
862 |
//* Directory object
|
|
|
863 |
//***********************************************************
|
|
|
864 |
|
|
|
865 |
|
|
|
866 |
CRofsDirCB::CRofsDirCB()
|
|
|
867 |
//
|
|
|
868 |
// Constructor
|
|
|
869 |
//
|
|
|
870 |
{
|
|
|
871 |
}
|
|
|
872 |
|
|
|
873 |
|
|
|
874 |
CRofsDirCB::~CRofsDirCB()
|
|
|
875 |
//
|
|
|
876 |
// Destruct
|
|
|
877 |
//
|
|
|
878 |
{
|
|
|
879 |
delete iMatch;
|
|
|
880 |
}
|
|
|
881 |
|
|
|
882 |
TBool CRofsDirCB::MatchUid()
|
|
|
883 |
{
|
|
|
884 |
return (iUidType[0]!=TUid::Null() || iUidType[1]!=TUid::Null() || iUidType[2]!=TUid::Null());
|
|
|
885 |
}
|
|
|
886 |
|
|
|
887 |
LOCAL_C TBool CompareUid(const TUidType& aUidTrg, const TUidType& aUidSuitor)
|
|
|
888 |
//
|
|
|
889 |
// Compare the suitor to the target pattern
|
|
|
890 |
//
|
|
|
891 |
{
|
|
|
892 |
|
|
|
893 |
if (aUidTrg[0]!=TUid::Null() && aUidTrg[0]!=aUidSuitor[0])
|
|
|
894 |
return(EFalse);
|
|
|
895 |
if (aUidTrg[1]!=TUid::Null() && aUidTrg[1]!=aUidSuitor[1])
|
|
|
896 |
return(EFalse);
|
|
|
897 |
if (aUidTrg[2]!=TUid::Null() && aUidTrg[2]!=aUidSuitor[2])
|
|
|
898 |
return(EFalse);
|
|
|
899 |
return(ETrue);
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
|
|
|
903 |
void CRofsDirCB::SetDir( const TRofsDir* aDir, const TDesC& aName, TInt64& aTimeStamp )
|
|
|
904 |
//
|
|
|
905 |
// Set the directory and entry that we are on after open.
|
|
|
906 |
//
|
|
|
907 |
{
|
|
|
908 |
iDir = aDir;
|
|
|
909 |
iTimeStamp = aTimeStamp;
|
|
|
910 |
iNext = NULL;
|
|
|
911 |
iMatch = aName.AllocL();
|
|
|
912 |
iPending = EFalse;
|
|
|
913 |
}
|
|
|
914 |
|
|
|
915 |
|
|
|
916 |
|
|
|
917 |
void CRofsDirCB::ReadL(TEntry& aEntry)
|
|
|
918 |
//
|
|
|
919 |
// Read the next entry from the directory.
|
|
|
920 |
//
|
|
|
921 |
{
|
|
|
922 |
__ASSERT_DEBUG( NULL != iCache, CRofs::Panic( CRofs::EPanicDirCacheNull ));
|
|
|
923 |
|
|
|
924 |
FOREVER
|
|
|
925 |
{
|
|
|
926 |
if (!iPending)
|
|
|
927 |
{
|
|
|
928 |
TInt err;
|
|
|
929 |
do
|
|
|
930 |
{
|
|
|
931 |
// skip past all hidden files so they don't appear in the directory listing
|
|
|
932 |
TRAP(err, iCache->GetNextMatchingL( *iMatch, iAtt, iDir, iNext, KErrEof, EFalse ));
|
|
|
933 |
}
|
|
|
934 |
while(KErrHidden == err);
|
|
|
935 |
User::LeaveIfError(err);
|
|
|
936 |
}
|
|
|
937 |
iPending=EFalse;
|
|
|
938 |
|
|
|
939 |
// copy out the entry data
|
|
|
940 |
if((~iNext->iAttExtra & (KEntryAttUnique >> 23))!=0)
|
|
|
941 |
{
|
|
|
942 |
iEntry.iName.Des().Copy( CDirectoryCache::NameAddress(iNext), iNext->iNameLength );
|
|
|
943 |
iEntry.iName.Des().AppendFormat(_L("[%02x-00]"), iCache->GetMountId());
|
|
|
944 |
}
|
|
|
945 |
else
|
|
|
946 |
{
|
|
|
947 |
iEntry.iName.Des().Copy( CDirectoryCache::NameAddress(iNext), iNext->iNameLength );
|
|
|
948 |
}
|
|
|
949 |
iEntry.iAtt = iNext->iAtt;
|
|
|
950 |
iEntry.iSize = iNext->iFileSize;
|
|
|
951 |
iEntry.iModified = iTimeStamp;
|
|
|
952 |
aEntry = iEntry;
|
|
|
953 |
if (MatchUid())
|
|
|
954 |
{
|
|
|
955 |
static_cast<CRofsMountCB&>(Mount()).ReadUidL(iNext->iFileAddress, aEntry, (TRofsEntry*)iNext );
|
|
|
956 |
if (CompareUid(iUidType, aEntry.iType))
|
|
|
957 |
{
|
|
|
958 |
break;
|
|
|
959 |
}
|
|
|
960 |
}
|
|
|
961 |
else
|
|
|
962 |
{
|
|
|
963 |
break;
|
|
|
964 |
}
|
|
|
965 |
}
|
|
|
966 |
if ( (iAtt & KEntryAttAllowUid) && (aEntry.iAtt & KEntryAttDir)==0 && !MatchUid() )
|
|
|
967 |
{
|
|
|
968 |
static_cast<CRofsMountCB&>(Mount()).ReadUidL( iNext->iFileAddress, aEntry, (TRofsEntry*)iNext );
|
|
|
969 |
}
|
|
|
970 |
}
|
|
|
971 |
|
|
|
972 |
|
|
|
973 |
//***********************************************************
|
|
|
974 |
//* Filesystem factory object
|
|
|
975 |
//***********************************************************
|
|
|
976 |
|
|
|
977 |
CRofs::CRofs()
|
|
|
978 |
//
|
|
|
979 |
// Constructor
|
|
|
980 |
//
|
|
|
981 |
{
|
|
|
982 |
}
|
|
|
983 |
|
|
|
984 |
CRofs::~CRofs()
|
|
|
985 |
//
|
|
|
986 |
// Destruct
|
|
|
987 |
//
|
|
|
988 |
{
|
|
|
989 |
}
|
|
|
990 |
|
|
|
991 |
TInt CRofs::Install()
|
|
|
992 |
//
|
|
|
993 |
// Install the file system.
|
|
|
994 |
//
|
|
|
995 |
{
|
|
|
996 |
iVersion=TVersion(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber);
|
|
|
997 |
_LIT( KFileSystemName, "rofs");
|
|
|
998 |
|
|
|
999 |
TDriveInfoV1Buf driveInfo;
|
|
|
1000 |
TInt r=UserHal::DriveInfo(driveInfo);
|
|
|
1001 |
if( KErrNone == r )
|
|
|
1002 |
{
|
|
|
1003 |
iTotalSupportedDrives = driveInfo().iTotalSupportedDrives;
|
|
|
1004 |
r = SetName(&KFileSystemName);
|
|
|
1005 |
}
|
|
|
1006 |
return r;
|
|
|
1007 |
}
|
|
|
1008 |
|
|
|
1009 |
CMountCB* CRofs::NewMountL() const
|
|
|
1010 |
//
|
|
|
1011 |
// Create a new mount control block.
|
|
|
1012 |
//
|
|
|
1013 |
{
|
|
|
1014 |
return new(ELeave) CRofsMountCB();
|
|
|
1015 |
}
|
|
|
1016 |
|
|
|
1017 |
CFileCB* CRofs::NewFileL() const
|
|
|
1018 |
//
|
|
|
1019 |
// Create a new file.
|
|
|
1020 |
//
|
|
|
1021 |
{
|
|
|
1022 |
return new(ELeave) CRofsFileCB();
|
|
|
1023 |
}
|
|
|
1024 |
|
|
|
1025 |
CDirCB* CRofs::NewDirL() const
|
|
|
1026 |
//
|
|
|
1027 |
// Create a new directory lister.
|
|
|
1028 |
//
|
|
|
1029 |
{
|
|
|
1030 |
return new(ELeave) CRofsDirCB();
|
|
|
1031 |
}
|
|
|
1032 |
|
|
|
1033 |
CFormatCB* CRofs::NewFormatL() const
|
|
|
1034 |
//
|
|
|
1035 |
// Create a new media formatter.
|
|
|
1036 |
//
|
|
|
1037 |
{
|
|
|
1038 |
User::Leave(KErrAccessDenied);
|
|
|
1039 |
return(NULL);
|
|
|
1040 |
}
|
|
|
1041 |
|
|
|
1042 |
|
|
|
1043 |
|
|
|
1044 |
void CRofs::DriveInfo(TDriveInfo& anInfo,TInt aDriveNumber) const
|
|
|
1045 |
//
|
|
|
1046 |
// Return the drive info. iDriveAtt is already set.
|
|
|
1047 |
//
|
|
|
1048 |
{
|
|
|
1049 |
TLocalDriveCapsV2Buf localDriveCaps;
|
|
|
1050 |
(void)GetLocalDrive(aDriveNumber).Caps(localDriveCaps);
|
|
|
1051 |
// ignore return as Caps always returns valid Media and Drive attributes
|
|
|
1052 |
anInfo.iMediaAtt = localDriveCaps().iMediaAtt | KMediaAttWriteProtected;
|
|
|
1053 |
anInfo.iType = localDriveCaps().iType;
|
|
|
1054 |
anInfo.iDriveAtt = localDriveCaps().iDriveAtt | KDriveAttInternal | KDriveAttLocal;
|
|
|
1055 |
|
|
|
1056 |
}
|
|
|
1057 |
|
|
|
1058 |
|
|
|
1059 |
TInt CRofs::DefaultPath(TDes& aPath) const
|
|
|
1060 |
//
|
|
|
1061 |
// Return the initial default path.
|
|
|
1062 |
//
|
|
|
1063 |
{
|
|
|
1064 |
|
|
|
1065 |
aPath=_L("?:\\");
|
|
|
1066 |
aPath[0] = (TUint8) RFs::GetSystemDriveChar();
|
|
|
1067 |
return(KErrNone);
|
|
|
1068 |
}
|
|
|
1069 |
|
|
|
1070 |
|
|
|
1071 |
|
|
|
1072 |
CRofs* CRofs::New()
|
|
|
1073 |
//
|
|
|
1074 |
// Create a ROFS filesystem
|
|
|
1075 |
//
|
|
|
1076 |
{
|
|
|
1077 |
CRofs* fsys=new CRofs();
|
|
|
1078 |
return fsys;
|
|
|
1079 |
}
|
|
|
1080 |
|
|
|
1081 |
|
|
|
1082 |
|
|
|
1083 |
|
|
|
1084 |
extern "C" {
|
|
|
1085 |
EXPORT_C CFileSystem* CreateFileSystem()
|
|
|
1086 |
//
|
|
|
1087 |
// Create a new file system
|
|
|
1088 |
//
|
|
|
1089 |
{
|
|
|
1090 |
return(CRofs::New());
|
|
|
1091 |
}
|
|
|
1092 |
}
|
|
|
1093 |
|
|
|
1094 |
//***********************************************************
|
|
|
1095 |
//* BlockMap interface
|
|
|
1096 |
//***********************************************************
|
|
|
1097 |
|
|
|
1098 |
|
|
|
1099 |
TInt CRofsFileCB::BlockMap(SBlockMapInfo& aInfo, TInt64& aStartPos, TInt64 aEndPos)
|
|
|
1100 |
//
|
|
|
1101 |
// Retrieves the block map of a given section of the file, in the ROFS file system.
|
|
|
1102 |
//
|
|
|
1103 |
{
|
|
|
1104 |
__PRINT2(_L("CRofsFileCB::BlockMap aStartPos=%ld aEndPos=%ld"), aStartPos, aEndPos);
|
|
|
1105 |
TInt64 mediaBase = iMediaBase;
|
|
|
1106 |
TInt size = iSize;
|
|
|
1107 |
|
|
|
1108 |
// Make a TBlockMapEntry object, copy the start position and the length of the blockmap entry
|
|
|
1109 |
TBlockMapEntry blockMapEntry;
|
|
|
1110 |
if ( I64HIGH(aStartPos) || I64HIGH(aEndPos) )
|
|
|
1111 |
return KErrNotSupported;
|
|
|
1112 |
|
|
|
1113 |
TInt startPos = I64LOW(aStartPos);
|
|
|
1114 |
TInt endPos = I64LOW(aEndPos);
|
|
|
1115 |
|
|
|
1116 |
if((endPos-startPos)>size)
|
|
|
1117 |
return KErrArgument;
|
|
|
1118 |
|
|
|
1119 |
TInt drvNo=-1;
|
|
|
1120 |
TBusLocalDrive* locDrv;
|
|
|
1121 |
if((RofsMount().LocalDrive()->GetLocalDrive(locDrv)==KErrNone) && ((drvNo=GetLocalDriveNumber(locDrv))>=0) && (drvNo<KMaxLocalDrives))
|
|
|
1122 |
aInfo.iLocalDriveNumber=drvNo;
|
|
|
1123 |
else
|
|
|
1124 |
return KErrNotSupported;
|
|
|
1125 |
|
|
|
1126 |
TLocalDriveCapsV4Buf caps;
|
|
|
1127 |
TUint blockSz = 0;
|
|
|
1128 |
if((RofsMount().LocalDrive()->Caps(caps)==KErrNone) && caps().iFileSystemId==KDriveFileSysROFS)
|
|
|
1129 |
blockSz = caps().iNumBytesMain;
|
|
|
1130 |
else
|
|
|
1131 |
return KErrNotSupported;
|
|
|
1132 |
|
|
|
1133 |
TUint len = 0;
|
|
|
1134 |
if ( endPos >= size )
|
|
|
1135 |
len = size-startPos;
|
|
|
1136 |
else
|
|
|
1137 |
len = endPos-startPos;
|
|
|
1138 |
|
|
|
1139 |
TUint numBlocks = 0;
|
|
|
1140 |
TUint stBlockNr = (TUint) ((mediaBase + startPos)/blockSz); // start block number (counts from 0)
|
|
|
1141 |
TUint stBlockAddr = stBlockNr*blockSz; // address of start block
|
|
|
1142 |
|
|
|
1143 |
while((stBlockAddr + numBlocks*blockSz) < (mediaBase + startPos + len)) // accumulate contiguous blocks until we pass the end of the region
|
|
|
1144 |
numBlocks++;
|
|
|
1145 |
|
|
|
1146 |
blockMapEntry.SetNumberOfBlocks( numBlocks );
|
|
|
1147 |
blockMapEntry.SetStartBlock( stBlockNr );
|
|
|
1148 |
aInfo.iStartBlockAddress = 0; // start of partition = block 0
|
|
|
1149 |
aInfo.iBlockGranularity = blockSz;
|
|
|
1150 |
aInfo.iBlockStartOffset = (TUint) ((mediaBase + startPos)%blockSz); // offset within first block to start of region
|
|
|
1151 |
// Then put it into the descriptor iMap within the structure aInfo of type SBlockMapInfo
|
|
|
1152 |
TPckg<TBlockMapEntry> entry(blockMapEntry);
|
|
|
1153 |
aInfo.iMap.Append(entry);
|
|
|
1154 |
|
|
|
1155 |
return KErrCompletion;
|
|
|
1156 |
}
|
|
|
1157 |
|
|
|
1158 |
TInt CRofsFileCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput)
|
|
|
1159 |
//
|
|
|
1160 |
//
|
|
|
1161 |
//
|
|
|
1162 |
{
|
|
|
1163 |
switch(aInterfaceId)
|
|
|
1164 |
{
|
|
|
1165 |
case EBlockMapInterface:
|
|
|
1166 |
aInterface = (CFileCB::MBlockMapInterface*) this;
|
|
|
1167 |
return KErrNone;
|
|
|
1168 |
|
|
|
1169 |
case EGetLocalDrive:
|
|
|
1170 |
return (RofsMount()).LocalDrive()->GetLocalDrive((TBusLocalDrive*&) aInterface);
|
|
|
1171 |
|
|
|
1172 |
default:
|
|
|
1173 |
return CFileCB::GetInterface(aInterfaceId,aInterface,aInput);
|
|
|
1174 |
}
|
|
|
1175 |
}
|