| author | Tom Cosgrove <tom.cosgrove@nokia.com> |
| Fri, 28 May 2010 16:29:07 +0100 | |
| changeset 30 | 8aab599e3476 |
| parent 6 | 0173bcd7697c |
| permissions | -rw-r--r-- |
| 0 | 1 |
// 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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||
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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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6
0173bcd7697c
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
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#include <e32hal.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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||
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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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||
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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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||
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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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//*********************************************************** |
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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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||
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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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||
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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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||
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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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||
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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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} |
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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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||
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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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||
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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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||
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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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||
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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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//*********************************************************** |
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//* Mount object |
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//*********************************************************** |
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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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||
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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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||
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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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||
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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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||
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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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||
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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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336 |
||
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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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342 |
||
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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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348 |
||
349 |
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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||
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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 |
||
369 |
__PRINT(_L("CRofsMountCB::CheckExtension, Valid Extension found"));
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return KErrNone; |
|
371 |
} |
|
372 |
||
373 |
TInt CRofsMountCB::CheckHeader() const |
|
374 |
// |
|
375 |
// Returns KErrNone if the TRofsHeader looks ok, KErrCorrupt if not |
|
376 |
// |
|
377 |
{
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378 |
const TUint8 KRofsHeaderId[4] = {'R', 'O', 'F', 'S' };
|
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379 |
||
380 |
// nasty cast required until TPckgBuf gains a const accessor member |
|
381 |
const TRofsHeader& h = ((CRofsMountCB*)this)->iHeader(); |
|
382 |
if( 0 != Mem::Compare( KRofsHeaderId, 4, h.iIdentifier, 4 ) ) |
|
383 |
{
|
|
384 |
__PRINT(_L("CRofsMountCB::CheckHeader, [ROFS] ID missing"));
|
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385 |
return KErrCorrupt; |
|
386 |
} |
|
387 |
||
388 |
if( h.iRofsFormatVersion < KEarliestSupportedFormatVersion |
|
389 |
|| h.iRofsFormatVersion > KLatestSupportedFormatVersion ) |
|
390 |
{
|
|
391 |
__PRINT1(_L("CRofsMountCB::CheckHeader, unsupported version %x"), h.iRofsFormatVersion );
|
|
392 |
return KErrNotSupported; |
|
393 |
} |
|
394 |
||
395 |
if( MAKE_TINT64(0,h.iImageSize) > iMediaSize ) |
|
396 |
{
|
|
397 |
__PRINT1(_L("CRofsMountCB::CheckHeader, image size overflow %x"), h.iImageSize );
|
|
398 |
return KErrCorrupt; |
|
399 |
} |
|
400 |
||
401 |
if( MAKE_TINT64(0,h.iDirTreeOffset) > iMediaSize ) |
|
402 |
{
|
|
403 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir tree offset %x out-of-range"), h.iDirTreeOffset );
|
|
404 |
return KErrCorrupt; |
|
405 |
} |
|
406 |
||
407 |
if(TInt64(h.iDirTreeOffset + h.iDirTreeSize) > iMediaSize ) |
|
408 |
{
|
|
409 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir tree size %x overflow"), h.iDirTreeSize );
|
|
410 |
return KErrCorrupt; |
|
411 |
} |
|
412 |
||
413 |
if( MAKE_TINT64(0,h.iDirFileEntriesOffset) > iMediaSize ) |
|
414 |
{
|
|
415 |
__PRINT1(_L("CRofsMountCB::CheckHeader, file entries offset %x out-of-range"), h.iDirFileEntriesOffset );
|
|
416 |
return KErrCorrupt; |
|
417 |
} |
|
418 |
||
419 |
if( TInt64(h.iDirFileEntriesOffset + h.iDirFileEntriesSize) > iMediaSize ) |
|
420 |
{
|
|
421 |
__PRINT1(_L("CRofsMountCB::CheckHeader, file entries size %x overflow"), h.iDirFileEntriesSize );
|
|
422 |
return KErrCorrupt; |
|
423 |
} |
|
424 |
||
425 |
if( IsOverlapping( h.iDirTreeOffset, h.iDirTreeSize, |
|
426 |
h.iDirFileEntriesOffset, h.iDirFileEntriesSize ) ) |
|
427 |
{
|
|
428 |
__PRINT1(_L("CRofsMountCB::CheckHeader, dir & file entries overlap"), h.iDirTreeSize );
|
|
429 |
return KErrCorrupt; |
|
430 |
} |
|
431 |
||
432 |
return KErrNone; |
|
433 |
} |
|
434 |
||
435 |
||
436 |
TInt CRofsMountCB::ReMount() |
|
437 |
// |
|
438 |
// Try and remount this media. |
|
439 |
// |
|
440 |
{
|
|
441 |
||
442 |
CRofs::Panic( CRofs::EPanicRemountNotSupported ); |
|
443 |
return(0); |
|
444 |
} |
|
445 |
||
446 |
void CRofsMountCB::VolumeL(TVolumeInfo& aVolume) const |
|
447 |
// |
|
448 |
// Return the volume info. |
|
449 |
// |
|
450 |
{
|
|
451 |
||
452 |
aVolume.iFree=0; |
|
453 |
} |
|
454 |
||
455 |
||
456 |
void CRofsMountCB::SetVolumeL(TDes& /*aName*/) |
|
457 |
// |
|
458 |
// Set the volume label. |
|
459 |
// |
|
460 |
{
|
|
461 |
||
462 |
User::Leave(KErrAccessDenied); |
|
463 |
} |
|
464 |
||
465 |
void CRofsMountCB::MkDirL(const TDesC& /*aName*/) |
|
466 |
// |
|
467 |
// Make a directory. |
|
468 |
// |
|
469 |
{
|
|
470 |
||
471 |
User::Leave(KErrAccessDenied); |
|
472 |
} |
|
473 |
||
474 |
void CRofsMountCB::RmDirL(const TDesC& /*aName*/) |
|
475 |
// |
|
476 |
// Remove a directory. |
|
477 |
// |
|
478 |
{
|
|
479 |
||
480 |
User::Leave(KErrAccessDenied); |
|
481 |
} |
|
482 |
||
483 |
void CRofsMountCB::DeleteL(const TDesC& /*aName*/) |
|
484 |
// |
|
485 |
// Delete a file. |
|
486 |
// |
|
487 |
{
|
|
488 |
||
489 |
User::Leave(KErrAccessDenied); |
|
490 |
} |
|
491 |
||
492 |
void CRofsMountCB::RenameL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/) |
|
493 |
// |
|
494 |
// Rename a file or directory. |
|
495 |
// |
|
496 |
{
|
|
497 |
||
498 |
User::Leave(KErrAccessDenied); |
|
499 |
} |
|
500 |
||
501 |
void CRofsMountCB::ReplaceL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/) |
|
502 |
// |
|
503 |
// Atomic replace. |
|
504 |
// |
|
505 |
{
|
|
506 |
||
507 |
User::Leave(KErrAccessDenied); |
|
508 |
} |
|
509 |
||
510 |
void CRofsMountCB::EntryL(const TDesC& aName,TEntry& aEntry) const |
|
511 |
// |
|
512 |
// Get entry details. |
|
513 |
// |
|
514 |
{
|
|
515 |
const TRofsDir* dir; |
|
516 |
const TRofsEntry* entry = NULL; |
|
517 |
iDirectoryCache->FindGeneralEntryL( aName, KEntryAttMaskSupported, dir, entry); |
|
518 |
aEntry.iAtt = entry->iAtt; |
|
519 |
aEntry.iSize = entry->iFileSize; |
|
520 |
aEntry.iModified = ((TPckgBuf<TRofsHeader>&)(iHeader))().iTime; |
|
521 |
aEntry.iName.Des().Copy( CDirectoryCache::NameAddress(entry), entry->iNameLength); |
|
522 |
ReadUidL( entry->iFileAddress, aEntry, (TRofsEntry*)entry ); |
|
523 |
} |
|
524 |
||
525 |
void CRofsMountCB::ReadUidL( TUint /*aMediaOffset*/, TEntry& aEntry, TRofsEntry* aRofsEntry) const |
|
526 |
// |
|
527 |
// Internal function to read a uid if present. |
|
528 |
// |
|
529 |
{
|
|
530 |
||
531 |
TBuf8<sizeof(TCheckedUid)> uidBuf; |
|
532 |
uidBuf.SetLength(sizeof(TCheckedUid)); |
|
533 |
Mem::Copy(&uidBuf[0], &aRofsEntry->iUids[0],sizeof(TCheckedUid)); |
|
534 |
||
535 |
TCheckedUid uid(uidBuf); |
|
536 |
aEntry.iType = uid.UidType(); |
|
537 |
} |
|
538 |
||
539 |
void CRofsMountCB::SetEntryL(const TDesC& /*aName*/,const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/) |
|
540 |
// |
|
541 |
// Set entry details. |
|
542 |
// |
|
543 |
{
|
|
544 |
||
545 |
User::Leave(KErrAccessDenied); |
|
546 |
} |
|
547 |
||
548 |
void CRofsMountCB::FileOpenL(const TDesC& aName,TUint aMode,TFileOpen aOpen,CFileCB* aFile) |
|
549 |
// |
|
550 |
// Open a file on the current mount. |
|
551 |
// |
|
552 |
{
|
|
553 |
||
554 |
if ( aMode & EFileWrite ) |
|
555 |
{
|
|
556 |
User::Leave(KErrAccessDenied); |
|
557 |
} |
|
558 |
||
559 |
if( EFileOpen != aOpen ) |
|
560 |
{
|
|
561 |
User::Leave(KErrAccessDenied); |
|
562 |
} |
|
563 |
||
564 |
const TRofsEntry* entry; |
|
565 |
iDirectoryCache->FindFileEntryL(aName, entry); |
|
566 |
||
567 |
CRofsFileCB& file=(*((CRofsFileCB*)aFile)); |
|
568 |
file.SetSize( entry->iFileSize ); |
|
569 |
file.SetAtt( entry->iAtt ); |
|
570 |
file.SetAttExtra( entry->iAttExtra ); |
|
571 |
file.SetModified( iHeader().iTime ); |
|
572 |
file.SetMediaBase( entry->iFileAddress ); |
|
573 |
} |
|
574 |
||
575 |
void CRofsMountCB::DirOpenL(const TDesC& aName,CDirCB* aDir) |
|
576 |
// |
|
577 |
// Open a directory on the current mount. |
|
578 |
// |
|
579 |
{
|
|
580 |
||
581 |
TFileName fileName=aName; |
|
582 |
TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // Exclude path delimiter |
|
583 |
if (namePos==aName.Length()) |
|
584 |
{
|
|
585 |
fileName+=_L("*");
|
|
586 |
} |
|
587 |
||
588 |
const TRofsDir* dir; |
|
589 |
iDirectoryCache->FindDirectoryEntryL( fileName.Left(namePos), dir ); |
|
590 |
||
591 |
CRofsDirCB& dirCB=(*((CRofsDirCB*)aDir)); |
|
592 |
dirCB.SetDir( dir, fileName.Mid(namePos), iHeader().iTime ); |
|
593 |
dirCB.SetCache( iDirectoryCache ); |
|
594 |
} |
|
595 |
||
596 |
void CRofsMountCB::RawReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,TInt anOffset,const RMessagePtr2& aMessage) const |
|
597 |
// |
|
598 |
// Read up to aLength data directly from the media |
|
599 |
// |
|
600 |
{
|
|
601 |
if (aPos >= iMediaSize || aPos < 0 ) |
|
602 |
{
|
|
603 |
if (aMessage.Handle() == KLocalMessageHandle) |
|
604 |
((TPtr8* )aTrg)->SetLength(0); |
|
605 |
else |
|
606 |
aMessage.WriteL(0,TPtrC8(NULL,0),anOffset); |
|
607 |
} |
|
608 |
else |
|
609 |
{
|
|
610 |
TInt len=Min( (TInt)(I64LOW(iMediaSize)-I64LOW(aPos)),aLength); |
|
611 |
||
612 |
#ifdef _USE_TRUE_LRU_CACHE |
|
613 |
||
614 |
__PRINT2(_L("ROFS::RawReadL() pos=%d len=%d"),aPos, aLength);
|
|
615 |
CacheReadL( I64LOW(aPos), len, aTrg, anOffset, aMessage ); |
|
616 |
#else |
|
617 |
TInt r = LocalDrive()->Read( aPos, len, aTrg, aMessage.Handle(), anOffset ); |
|
618 |
User::LeaveIfError( r ); |
|
619 |
#endif |
|
620 |
} |
|
621 |
} |
|
622 |
||
623 |
void CRofsMountCB::RawWriteL(TInt64 /*aPos*/,TInt /*aLength*/,const TAny* /*aSrc*/,TInt /*anOffset*/,const RMessagePtr2& /*aMessage*/) |
|
624 |
// |
|
625 |
// Write aLength data to ROM (?) |
|
626 |
// |
|
627 |
{
|
|
628 |
||
629 |
User::Leave(KErrAccessDenied); |
|
630 |
} |
|
631 |
||
632 |
||
633 |
void CRofsMountCB::ReadSectionL(const TDesC& aName,TInt aPos,TAny* aTrg,TInt aLength,const RMessagePtr2& aMessage) |
|
634 |
// |
|
635 |
// Note: this function will need some modification to support compresed files |
|
636 |
// |
|
637 |
{
|
|
638 |
||
639 |
__PRINT(_L("CRofsMountCB::ReadSectionL"));
|
|
640 |
||
641 |
const TRofsEntry* entry; |
|
642 |
iDirectoryCache->FindFileEntryL(aName, entry); |
|
643 |
||
644 |
TInt size = entry->iFileSize; |
|
645 |
TInt len = 0; // initialise to stop a warning |
|
646 |
if ( size >= (aPos+aLength) ) |
|
647 |
{
|
|
648 |
len = aLength; |
|
649 |
} |
|
650 |
else if ( size > aPos ) |
|
651 |
{
|
|
652 |
len=(size-aPos); |
|
653 |
} |
|
654 |
else |
|
655 |
{
|
|
656 |
User::Leave(KErrEof); |
|
657 |
} |
|
658 |
||
659 |
TInt64 pos64( (TUint)entry->iFileAddress); |
|
660 |
pos64 += aPos; |
|
661 |
||
662 |
#ifdef _USE_TRUE_LRU_CACHE |
|
663 |
||
664 |
__PRINT2(_L("ROFS::ReadSectionL() pos=%d len=%d"),I64LOW(pos64), aLength);
|
|
665 |
CacheReadL( I64LOW(pos64), len, aTrg, 0, aMessage ); |
|
666 |
#else |
|
667 |
TInt r = LocalDrive()->Read( pos64, len, aTrg, aMessage.Handle(), 0 ); |
|
668 |
User::LeaveIfError( r ); |
|
669 |
#endif |
|
670 |
} |
|
671 |
||
672 |
||
673 |
void CRofsMountCB::GetShortNameL(const TDesC& /*aLongName*/,TDes& /*aShortName*/) |
|
674 |
// |
|
675 |
// Return the short name associated with aLongName |
|
676 |
// Assumes all rom names are 8.3 |
|
677 |
// |
|
678 |
{
|
|
679 |
||
680 |
User::Leave(KErrNotSupported); |
|
681 |
} |
|
682 |
||
683 |
void CRofsMountCB::GetLongNameL(const TDesC& /*aShortName*/,TDes& /*aLongName*/) |
|
684 |
// |
|
685 |
// Return the short name associated with aLongName |
|
686 |
// Assumes all rom names are 8.3 |
|
687 |
// |
|
688 |
{
|
|
689 |
||
690 |
User::Leave(KErrNotSupported); |
|
691 |
} |
|
692 |
||
693 |
||
694 |
TInt CRofsMountCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput) |
|
695 |
{
|
|
696 |
TInt r= KErrNone; |
|
697 |
switch(aInterfaceId) |
|
698 |
{
|
|
699 |
case (CMountCB::EFileAccessor): |
|
700 |
((CMountCB::MFileAccessor*&) aInterface) = this; |
|
701 |
break; |
|
702 |
||
703 |
case CMountCB::ELocalBufferSupport: |
|
704 |
return LocalDrive()->LocalBufferSupport(); |
|
705 |
||
706 |
case (CMountCB::EAddToCompositeMount): |
|
707 |
iMountId = (TUint8)((TInt)aInput); |
|
708 |
break; |
|
709 |
||
710 |
default: |
|
711 |
r=KErrNotSupported; |
|
712 |
} |
|
713 |
return r; |
|
714 |
} |
|
715 |
||
716 |
TInt CRofsMountCB::GetFileUniqueId(const TDesC& aName, TInt64& aUniqueId) |
|
717 |
{
|
|
718 |
// Get unique identifier for the file |
|
719 |
const TRofsEntry* entry=NULL; |
|
720 |
TInt err; |
|
721 |
TRAP(err,iDirectoryCache->FindFileEntryL(aName, entry)); |
|
722 |
if(err!=KErrNone) |
|
723 |
return err; |
|
724 |
aUniqueId = MAKE_TINT64(0,entry->iFileAddress); |
|
725 |
return KErrNone; |
|
726 |
} |
|
727 |
||
728 |
TInt CRofsMountCB::Spare3(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
729 |
{
|
|
730 |
return KErrNotSupported; |
|
731 |
} |
|
732 |
||
733 |
TInt CRofsMountCB::Spare2(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
734 |
{
|
|
735 |
return KErrNotSupported; |
|
736 |
} |
|
737 |
||
738 |
TInt CRofsMountCB::Spare1(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
739 |
{
|
|
740 |
return KErrNotSupported; |
|
741 |
} |
|
742 |
||
743 |
||
744 |
//*********************************************************** |
|
745 |
//* File object |
|
746 |
//*********************************************************** |
|
747 |
||
748 |
||
749 |
||
750 |
CRofsFileCB::CRofsFileCB() |
|
751 |
// |
|
752 |
// Constructor |
|
753 |
// |
|
754 |
{
|
|
755 |
} |
|
756 |
||
757 |
||
758 |
void CRofsFileCB::ReadL(TInt64 aPos,TInt& aLength,TDes8* aDes,const RMessagePtr2& aMessage, TInt aOffset) |
|
759 |
// |
|
760 |
// Read from the file. |
|
761 |
// |
|
762 |
{
|
|
763 |
__PRINT(_L("CRofsFileCB::ReadL"));
|
|
764 |
||
765 |
// for now, convert pos to a TInt |
|
766 |
if (aPos > KMaxTInt) |
|
767 |
User::Leave(KErrNotSupported); |
|
768 |
TInt pos = (TInt) aPos; |
|
769 |
||
770 |
if (pos>=iSize) |
|
771 |
{
|
|
772 |
if (aMessage.Handle() == KLocalMessageHandle) |
|
773 |
((TPtr8* )aDes)->SetLength(0); |
|
774 |
else |
|
775 |
aMessage.WriteL(0,TPtrC8(NULL,0),aOffset); |
|
776 |
aLength=0; |
|
777 |
} |
|
778 |
else |
|
779 |
{
|
|
780 |
TInt len=Min((iSize-pos),aLength); |
|
781 |
||
782 |
#ifdef _USE_TRUE_LRU_CACHE |
|
783 |
||
784 |
__PRINT2(_L("ROFS::ReadL() pos=%d len=%d"),pos, len);
|
|
785 |
RofsMount().CacheReadL( pos + iMediaBase, len, aDes, aOffset, aMessage ); |
|
786 |
#else |
|
787 |
TInt r = RofsMount().LocalDrive()->Read( pos + iMediaBase, len, aDes, aMessage.Handle(),aOffset) ; |
|
788 |
User::LeaveIfError( r ); |
|
789 |
#endif |
|
790 |
aLength=len; |
|
791 |
} |
|
792 |
} |
|
793 |
||
794 |
void CRofsFileCB::ReadL(TInt aPos,TInt& aLength,const TAny* aDes,const RMessagePtr2& aMessage) |
|
795 |
{
|
|
796 |
ReadL(TInt64(aPos),aLength,(TDes8*) aDes,aMessage, 0); |
|
797 |
} |
|
798 |
||
799 |
void CRofsFileCB::WriteL(TInt64 /*aPos*/,TInt& /*aLength*/,const TDesC8* /*aDes*/,const RMessagePtr2& /*aMessage*/, TInt /*aOffset*/) |
|
800 |
// |
|
801 |
// Write to the file. |
|
802 |
// |
|
803 |
{
|
|
804 |
User::Leave(KErrAccessDenied); |
|
805 |
} |
|
806 |
||
807 |
void CRofsFileCB::WriteL(TInt /*aPos*/,TInt& /*aLength*/,const TAny* /*aDes*/,const RMessagePtr2& /*aMessage*/) |
|
808 |
{
|
|
809 |
User::Leave(KErrAccessDenied); |
|
810 |
} |
|
811 |
||
812 |
void CRofsFileCB::RenameL(const TDesC& /*aDes*/) |
|
813 |
// |
|
814 |
// Rename the file. |
|
815 |
// |
|
816 |
{
|
|
817 |
User::Leave(KErrAccessDenied); |
|
818 |
} |
|
819 |
||
820 |
void CRofsFileCB::SetSizeL(TInt64 /*aSize*/) |
|
821 |
// |
|
822 |
// Set the file size. |
|
823 |
// |
|
824 |
{
|
|
825 |
User::Leave(KErrAccessDenied); |
|
826 |
} |
|
827 |
||
828 |
void CRofsFileCB::SetSizeL(TInt /*aSize*/) |
|
829 |
// |
|
830 |
// Set the file size. |
|
831 |
// |
|
832 |
{
|
|
833 |
User::Leave(KErrAccessDenied); |
|
834 |
} |
|
835 |
||
836 |
void CRofsFileCB::SetEntryL(const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/) |
|
837 |
// |
|
838 |
// Set the entry's attributes and modified time. |
|
839 |
// |
|
840 |
{
|
|
841 |
User::Leave(KErrAccessDenied); |
|
842 |
} |
|
843 |
||
844 |
void CRofsFileCB::FlushAllL() |
|
845 |
// |
|
846 |
// Commit any buffered date to the media. |
|
847 |
// |
|
848 |
{
|
|
849 |
User::Leave(KErrAccessDenied); |
|
850 |
} |
|
851 |
||
852 |
void CRofsFileCB::FlushDataL() |
|
853 |
// |
|
854 |
// Commit any buffered date to the media. |
|
855 |
// |
|
856 |
{
|
|
857 |
User::Leave(KErrAccessDenied); |
|
858 |
} |
|
859 |
||
860 |
||
861 |
||
862 |
//*********************************************************** |
|
863 |
//* Directory object |
|
864 |
//*********************************************************** |
|
865 |
||
866 |
||
867 |
CRofsDirCB::CRofsDirCB() |
|
868 |
// |
|
869 |
// Constructor |
|
870 |
// |
|
871 |
{
|
|
872 |
} |
|
873 |
||
874 |
||
875 |
CRofsDirCB::~CRofsDirCB() |
|
876 |
// |
|
877 |
// Destruct |
|
878 |
// |
|
879 |
{
|
|
880 |
delete iMatch; |
|
881 |
} |
|
882 |
||
883 |
TBool CRofsDirCB::MatchUid() |
|
884 |
{
|
|
885 |
return (iUidType[0]!=TUid::Null() || iUidType[1]!=TUid::Null() || iUidType[2]!=TUid::Null()); |
|
886 |
} |
|
887 |
||
888 |
LOCAL_C TBool CompareUid(const TUidType& aUidTrg, const TUidType& aUidSuitor) |
|
889 |
// |
|
890 |
// Compare the suitor to the target pattern |
|
891 |
// |
|
892 |
{
|
|
893 |
||
894 |
if (aUidTrg[0]!=TUid::Null() && aUidTrg[0]!=aUidSuitor[0]) |
|
895 |
return(EFalse); |
|
896 |
if (aUidTrg[1]!=TUid::Null() && aUidTrg[1]!=aUidSuitor[1]) |
|
897 |
return(EFalse); |
|
898 |
if (aUidTrg[2]!=TUid::Null() && aUidTrg[2]!=aUidSuitor[2]) |
|
899 |
return(EFalse); |
|
900 |
return(ETrue); |
|
901 |
} |
|
902 |
||
903 |
||
904 |
void CRofsDirCB::SetDir( const TRofsDir* aDir, const TDesC& aName, TInt64& aTimeStamp ) |
|
905 |
// |
|
906 |
// Set the directory and entry that we are on after open. |
|
907 |
// |
|
908 |
{
|
|
909 |
iDir = aDir; |
|
910 |
iTimeStamp = aTimeStamp; |
|
911 |
iNext = NULL; |
|
912 |
iMatch = aName.AllocL(); |
|
913 |
iPending = EFalse; |
|
914 |
} |
|
915 |
||
916 |
||
917 |
||
918 |
void CRofsDirCB::ReadL(TEntry& aEntry) |
|
919 |
// |
|
920 |
// Read the next entry from the directory. |
|
921 |
// |
|
922 |
{
|
|
923 |
__ASSERT_DEBUG( NULL != iCache, CRofs::Panic( CRofs::EPanicDirCacheNull )); |
|
924 |
||
925 |
FOREVER |
|
926 |
{
|
|
927 |
if (!iPending) |
|
928 |
{
|
|
929 |
TInt err; |
|
930 |
do |
|
931 |
{
|
|
932 |
// skip past all hidden files so they don't appear in the directory listing |
|
933 |
TRAP(err, iCache->GetNextMatchingL( *iMatch, iAtt, iDir, iNext, KErrEof, EFalse )); |
|
934 |
} |
|
935 |
while(KErrHidden == err); |
|
936 |
User::LeaveIfError(err); |
|
937 |
} |
|
938 |
iPending=EFalse; |
|
939 |
||
940 |
// copy out the entry data |
|
941 |
if((~iNext->iAttExtra & (KEntryAttUnique >> 23))!=0) |
|
942 |
{
|
|
943 |
iEntry.iName.Des().Copy( CDirectoryCache::NameAddress(iNext), iNext->iNameLength ); |
|
944 |
iEntry.iName.Des().AppendFormat(_L("[%02x-00]"), iCache->GetMountId());
|
|
945 |
} |
|
946 |
else |
|
947 |
{
|
|
948 |
iEntry.iName.Des().Copy( CDirectoryCache::NameAddress(iNext), iNext->iNameLength ); |
|
949 |
} |
|
950 |
iEntry.iAtt = iNext->iAtt; |
|
951 |
iEntry.iSize = iNext->iFileSize; |
|
952 |
iEntry.iModified = iTimeStamp; |
|
953 |
aEntry = iEntry; |
|
954 |
if (MatchUid()) |
|
955 |
{
|
|
956 |
static_cast<CRofsMountCB&>(Mount()).ReadUidL(iNext->iFileAddress, aEntry, (TRofsEntry*)iNext ); |
|
957 |
if (CompareUid(iUidType, aEntry.iType)) |
|
958 |
{
|
|
959 |
break; |
|
960 |
} |
|
961 |
} |
|
962 |
else |
|
963 |
{
|
|
964 |
break; |
|
965 |
} |
|
966 |
} |
|
967 |
if ( (iAtt & KEntryAttAllowUid) && (aEntry.iAtt & KEntryAttDir)==0 && !MatchUid() ) |
|
968 |
{
|
|
969 |
static_cast<CRofsMountCB&>(Mount()).ReadUidL( iNext->iFileAddress, aEntry, (TRofsEntry*)iNext ); |
|
970 |
} |
|
971 |
} |
|
972 |
||
973 |
||
974 |
//*********************************************************** |
|
975 |
//* Filesystem factory object |
|
976 |
//*********************************************************** |
|
977 |
||
978 |
CRofs::CRofs() |
|
979 |
// |
|
980 |
// Constructor |
|
981 |
// |
|
982 |
{
|
|
983 |
} |
|
984 |
||
985 |
CRofs::~CRofs() |
|
986 |
// |
|
987 |
// Destruct |
|
988 |
// |
|
989 |
{
|
|
990 |
} |
|
991 |
||
992 |
TInt CRofs::Install() |
|
993 |
// |
|
994 |
// Install the file system. |
|
995 |
// |
|
996 |
{
|
|
997 |
iVersion=TVersion(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber); |
|
998 |
_LIT( KFileSystemName, "rofs"); |
|
999 |
||
1000 |
TDriveInfoV1Buf driveInfo; |
|
1001 |
TInt r=UserHal::DriveInfo(driveInfo); |
|
1002 |
if( KErrNone == r ) |
|
1003 |
{
|
|
1004 |
iTotalSupportedDrives = driveInfo().iTotalSupportedDrives; |
|
1005 |
r = SetName(&KFileSystemName); |
|
1006 |
} |
|
1007 |
return r; |
|
1008 |
} |
|
1009 |
||
1010 |
CMountCB* CRofs::NewMountL() const |
|
1011 |
// |
|
1012 |
// Create a new mount control block. |
|
1013 |
// |
|
1014 |
{
|
|
1015 |
return new(ELeave) CRofsMountCB(); |
|
1016 |
} |
|
1017 |
||
1018 |
CFileCB* CRofs::NewFileL() const |
|
1019 |
// |
|
1020 |
// Create a new file. |
|
1021 |
// |
|
1022 |
{
|
|
1023 |
return new(ELeave) CRofsFileCB(); |
|
1024 |
} |
|
1025 |
||
1026 |
CDirCB* CRofs::NewDirL() const |
|
1027 |
// |
|
1028 |
// Create a new directory lister. |
|
1029 |
// |
|
1030 |
{
|
|
1031 |
return new(ELeave) CRofsDirCB(); |
|
1032 |
} |
|
1033 |
||
1034 |
CFormatCB* CRofs::NewFormatL() const |
|
1035 |
// |
|
1036 |
// Create a new media formatter. |
|
1037 |
// |
|
1038 |
{
|
|
1039 |
User::Leave(KErrAccessDenied); |
|
1040 |
return(NULL); |
|
1041 |
} |
|
1042 |
||
1043 |
||
1044 |
||
1045 |
void CRofs::DriveInfo(TDriveInfo& anInfo,TInt aDriveNumber) const |
|
1046 |
// |
|
1047 |
// Return the drive info. iDriveAtt is already set. |
|
1048 |
// |
|
1049 |
{
|
|
1050 |
TLocalDriveCapsV2Buf localDriveCaps; |
|
1051 |
(void)GetLocalDrive(aDriveNumber).Caps(localDriveCaps); |
|
1052 |
// ignore return as Caps always returns valid Media and Drive attributes |
|
1053 |
anInfo.iMediaAtt = localDriveCaps().iMediaAtt | KMediaAttWriteProtected; |
|
1054 |
anInfo.iType = localDriveCaps().iType; |
|
1055 |
anInfo.iDriveAtt = localDriveCaps().iDriveAtt | KDriveAttInternal | KDriveAttLocal; |
|
1056 |
||
1057 |
} |
|
1058 |
||
1059 |
||
1060 |
TInt CRofs::DefaultPath(TDes& aPath) const |
|
1061 |
// |
|
1062 |
// Return the initial default path. |
|
1063 |
// |
|
1064 |
{
|
|
1065 |
||
1066 |
aPath=_L("?:\\");
|
|
1067 |
aPath[0] = (TUint8) RFs::GetSystemDriveChar(); |
|
1068 |
return(KErrNone); |
|
1069 |
} |
|
1070 |
||
1071 |
||
1072 |
||
1073 |
CRofs* CRofs::New() |
|
1074 |
// |
|
1075 |
// Create a ROFS filesystem |
|
1076 |
// |
|
1077 |
{
|
|
1078 |
CRofs* fsys=new CRofs(); |
|
1079 |
return fsys; |
|
1080 |
} |
|
1081 |
||
1082 |
||
1083 |
||
1084 |
||
1085 |
extern "C" {
|
|
1086 |
EXPORT_C CFileSystem* CreateFileSystem() |
|
1087 |
// |
|
1088 |
// Create a new file system |
|
1089 |
// |
|
1090 |
{
|
|
1091 |
return(CRofs::New()); |
|
1092 |
} |
|
1093 |
} |
|
1094 |
||
1095 |
//*********************************************************** |
|
1096 |
//* BlockMap interface |
|
1097 |
//*********************************************************** |
|
1098 |
||
1099 |
||
1100 |
TInt CRofsFileCB::BlockMap(SBlockMapInfo& aInfo, TInt64& aStartPos, TInt64 aEndPos) |
|
1101 |
// |
|
1102 |
// Retrieves the block map of a given section of the file, in the ROFS file system. |
|
1103 |
// |
|
1104 |
{
|
|
1105 |
__PRINT2(_L("CRofsFileCB::BlockMap aStartPos=%ld aEndPos=%ld"), aStartPos, aEndPos);
|
|
1106 |
TInt64 mediaBase = iMediaBase; |
|
1107 |
TInt size = iSize; |
|
1108 |
||
1109 |
// Make a TBlockMapEntry object, copy the start position and the length of the blockmap entry |
|
1110 |
TBlockMapEntry blockMapEntry; |
|
1111 |
if ( I64HIGH(aStartPos) || I64HIGH(aEndPos) ) |
|
1112 |
return KErrNotSupported; |
|
1113 |
||
1114 |
TInt startPos = I64LOW(aStartPos); |
|
1115 |
TInt endPos = I64LOW(aEndPos); |
|
1116 |
||
1117 |
if((endPos-startPos)>size) |
|
1118 |
return KErrArgument; |
|
1119 |
||
1120 |
TInt drvNo=-1; |
|
1121 |
TBusLocalDrive* locDrv; |
|
1122 |
if((RofsMount().LocalDrive()->GetLocalDrive(locDrv)==KErrNone) && ((drvNo=GetLocalDriveNumber(locDrv))>=0) && (drvNo<KMaxLocalDrives)) |
|
1123 |
aInfo.iLocalDriveNumber=drvNo; |
|
1124 |
else |
|
1125 |
return KErrNotSupported; |
|
1126 |
||
1127 |
TLocalDriveCapsV4Buf caps; |
|
1128 |
TUint blockSz = 0; |
|
1129 |
if((RofsMount().LocalDrive()->Caps(caps)==KErrNone) && caps().iFileSystemId==KDriveFileSysROFS) |
|
1130 |
blockSz = caps().iNumBytesMain; |
|
1131 |
else |
|
1132 |
return KErrNotSupported; |
|
1133 |
||
1134 |
TUint len = 0; |
|
1135 |
if ( endPos >= size ) |
|
1136 |
len = size-startPos; |
|
1137 |
else |
|
1138 |
len = endPos-startPos; |
|
1139 |
||
1140 |
TUint numBlocks = 0; |
|
1141 |
TUint stBlockNr = (TUint) ((mediaBase + startPos)/blockSz); // start block number (counts from 0) |
|
1142 |
TUint stBlockAddr = stBlockNr*blockSz; // address of start block |
|
1143 |
||
1144 |
while((stBlockAddr + numBlocks*blockSz) < (mediaBase + startPos + len)) // accumulate contiguous blocks until we pass the end of the region |
|
1145 |
numBlocks++; |
|
1146 |
||
1147 |
blockMapEntry.SetNumberOfBlocks( numBlocks ); |
|
1148 |
blockMapEntry.SetStartBlock( stBlockNr ); |
|
1149 |
aInfo.iStartBlockAddress = 0; // start of partition = block 0 |
|
1150 |
aInfo.iBlockGranularity = blockSz; |
|
1151 |
aInfo.iBlockStartOffset = (TUint) ((mediaBase + startPos)%blockSz); // offset within first block to start of region |
|
1152 |
// Then put it into the descriptor iMap within the structure aInfo of type SBlockMapInfo |
|
1153 |
TPckg<TBlockMapEntry> entry(blockMapEntry); |
|
1154 |
aInfo.iMap.Append(entry); |
|
1155 |
||
1156 |
return KErrCompletion; |
|
1157 |
} |
|
1158 |
||
1159 |
TInt CRofsFileCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput) |
|
1160 |
// |
|
1161 |
// |
|
1162 |
// |
|
1163 |
{
|
|
1164 |
switch(aInterfaceId) |
|
1165 |
{
|
|
1166 |
case EBlockMapInterface: |
|
1167 |
aInterface = (CFileCB::MBlockMapInterface*) this; |
|
1168 |
return KErrNone; |
|
1169 |
||
1170 |
case EGetLocalDrive: |
|
1171 |
return (RofsMount()).LocalDrive()->GetLocalDrive((TBusLocalDrive*&) aInterface); |
|
1172 |
||
1173 |
default: |
|
1174 |
return CFileCB::GetInterface(aInterfaceId,aInterface,aInput); |
|
1175 |
} |
|
1176 |
} |