author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:45:50 +0200 | |
branch | RCL_3 |
changeset 21 | e7d2d738d3c2 |
parent 0 | a41df078684a |
permissions | -rw-r--r-- |
0 | 1 |
// Copyright (c) 2007-2009 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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// Provides a class to manage the generation of lists |
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// |
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// |
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#include "d_list_manager.h" |
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#include "d_process_tracker.h" |
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#include "debug_utils.h" |
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#include "plat_priv.h" |
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#include "debug_logging.h" |
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#include <arm.h> |
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// make accessing DThread's MState more intuitive |
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#define iMState iWaitLink.iSpare1 |
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// make accessing NThread's NState more intuitive |
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#define iNState iSpare3 |
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//constants to match against a rom entry's attributes, |
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//these are defined in the file server (can't be included kernel side) |
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//and in the ROM tools (also inaccessible) so redefined here |
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const TUint KEntryAttXIP=0x0080; |
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const TUint KEntryAttDir=0x0010; |
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using namespace Debug; |
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/** |
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Get thread listing for the specified thread, if the thread data will not fit |
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in the buffer then an error is returned. |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@param aTargetThreadId thread ID to return listing for |
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@return KErrNone on success, |
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KErrTooBig if data won't fit in aBuffer |
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or one of the other system wide error codes on failure |
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*/ |
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TInt TListManager::GetThreadListForThread(TDes8& aBuffer, TUint32& aDataSize, const TUint64 aTargetThreadId) const |
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{ |
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LOG_MSG("TListManager::GetThreadListForThread()"); |
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// open a handle to check whether the thread actually exists |
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DThread* thread = DebugUtils::OpenThreadHandle(aTargetThreadId); |
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if(!thread) |
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{ |
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return KErrArgument; |
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} |
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DProcess* process = thread->iOwningProcess; |
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if(!process) |
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{ |
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return KErrArgument; |
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} |
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TUint64 processId = process->iId; |
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thread->Close(NULL); |
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//request a process specific list |
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return GetThreadListForProcess(aBuffer, aDataSize, processId); |
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} |
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TInt TListManager::GetThreadListForProcess(TDes8& aBuffer, TUint32& aDataSize, const TUint64 aTargetProcessId) const |
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{ |
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LOG_MSG("TListManager::GetThreadListForProcess()"); |
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// open a handle to check whether the process actually exists |
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DProcess* process = DebugUtils::OpenProcessHandle(aTargetProcessId); |
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if(!process) |
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{ |
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return KErrArgument; |
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} |
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process->Close(NULL); |
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//request a process specific list |
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return GetThreadList(aBuffer, aDataSize, EFalse, aTargetProcessId); |
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} |
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/** |
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Get global thread listing |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@return KErrNone on success, |
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KErrTooBig if data won't fit in aBuffer |
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or one of the other system wide error codes on failure |
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*/ |
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TInt TListManager::GetGlobalThreadList(TDes8& aBuffer, TUint32& aDataSize) const |
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{ |
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LOG_MSG("TListManager::GetGlobalThreadList()"); |
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//request a global list |
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return GetThreadList(aBuffer, aDataSize, ETrue, 0); |
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} |
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/** |
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Get thread listing, if the thread data will not fit |
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in the buffer then an error is returned. |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@param aGlobal whether or not the listing should be global or thread specific |
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@param aTargetProcessId process ID to return listing for, relevant only if aGlobal == ETrue |
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@return KErrNone on success, |
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KErrTooBig if data won't fit in aBuffer |
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or one of the other system wide error codes on failure |
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*/ |
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TInt TListManager::GetThreadList(TDes8& aBuffer, TUint32& aDataSize, TBool aGlobal, const TUint64 aTargetProcessId) const |
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{ |
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LOG_MSG("TListManager::GetThreadList\n"); |
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//have to read the threads in a critical section |
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NKern::ThreadEnterCS(); |
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//get a pointer to the kernel's thread list |
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DObjectCon *threads = Kern::Containers()[EThread]; |
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//if can't get container then exit |
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if(threads == NULL) |
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{ |
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NKern::ThreadLeaveCS(); |
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return KErrGeneral; |
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} |
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//stop the thread list from changing while we are processing them |
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threads->Wait(); |
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aDataSize = 0; |
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aBuffer.SetLength(0); |
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//iterate through the threads adding them to the buffer |
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for(TInt i=0; i<threads->Count(); i++) |
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{ |
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DThread* thread = (DThread*)(*threads)[i]; |
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//skip this thread pointer is the thread is NULL |
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if(thread) |
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{ |
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NThread& nThread = thread->iNThread; |
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// if the thread is marked as being dead then don't return information about it in the listing |
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#ifndef __SMP__ |
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if((NThread::EDead != nThread.iNState) && (DThread::EDead != thread->iMState)) |
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#else |
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if((!nThread.IsDead()) && (DThread::EDead != thread->iMState)) |
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#endif |
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{ |
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if( aGlobal || (aTargetProcessId == (TUint64)thread->iOwningProcess->iId)) |
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{ |
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//store the data in the buffer |
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AppendThreadData(aBuffer, aDataSize, thread); |
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} |
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} |
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} |
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} |
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//leave critical section |
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threads->Signal(); |
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NKern::ThreadLeaveCS(); |
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//return indication of whether the kernel's data was too big |
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return (aDataSize > aBuffer.Length()) ? KErrTooBig : KErrNone; |
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} |
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/** |
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Helper function for writing thread data into a buffer |
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@pre call in a critical section |
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@pre call only on threads which have NThread state not equal to NThread::EDead |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@param aThread thread object to include information about |
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@return KErrNone on success, or one of the other system wide error codes |
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*/ |
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void TListManager::AppendThreadData(TDes8& aBuffer, TUint32& aDataSize, DThread* aThread) const |
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{ |
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//get aThread's name |
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TFileName fileName; |
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aThread->FullName(fileName); |
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TUint16 nameLength = fileName.Length(); |
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//increase aDataSize by the size of this entry |
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aDataSize = Align4(aDataSize + (2*nameLength) + sizeof(TThreadListEntry) - sizeof(TUint16)); |
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//if the data would not cause overflow then add it to the buffer |
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if(aDataSize <= aBuffer.MaxLength()) |
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{ |
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//Create a TThreadListEntry which references the buffer. |
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TThreadListEntry& entry = *(TThreadListEntry*)(aBuffer.Ptr()+aBuffer.Length()); |
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//add data to entry |
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entry.iProcessId = (TUint64)aThread->iOwningProcess->iId; |
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entry.iThreadId = (TUint64)aThread->iId; |
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entry.iSupervisorStackBase = (TUint32)aThread->iSupervisorStack; |
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entry.iSupervisorStackBaseValid = ETrue; |
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entry.iSupervisorStackSize = aThread->iSupervisorStackSize; |
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entry.iSupervisorStackSizeValid = ETrue; |
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entry.iNameLength = nameLength; |
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//only ask for the supervisor stack pointer if aThread is suspended |
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entry.iSupervisorStackPtrValid = EInValid; |
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entry.iSupervisorStackPtr = 0; |
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if(TheDProcessTracker.CheckSuspended(aThread)) |
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{ |
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NThread& nThread = aThread->iNThread; |
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TArmRegSet regSet; |
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TUint32 flags; |
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NKern::ThreadGetSystemContext(&nThread, ®Set, flags); |
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entry.iSupervisorStackPtr = (TUint32)regSet.iR13; |
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//need to check that the stack pointer flag is valid |
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if(flags & (1<<EArmSp)) |
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{ |
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entry.iSupervisorStackPtrValid = EValid; |
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} |
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} |
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//copy name data into the buffer |
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TUint16* ptr = &(entry.iName[0]); |
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const TUint8* ptr8 = fileName.Ptr(); |
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const TUint8* ptr8End = ptr8 + nameLength; |
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while(ptr8 < ptr8End) |
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{ |
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*ptr++ = (TUint16)*ptr8++; |
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} |
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aBuffer.SetLength(aDataSize); |
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} |
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} |
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/** |
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Get global process listing |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@return KErrNone on success, |
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KErrTooBig if data won't fit in aBuffer |
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or one of the other system wide error codes on failure |
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*/ |
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TInt TListManager::GetProcessList(TDes8& aBuffer, TUint32& aDataSize) const |
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{ |
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LOG_MSG("TListManager::GetProcessList()"); |
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//get a pointer to the kernel's process list |
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DObjectCon* processes = Kern::Containers()[EProcess]; |
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if(processes == NULL) |
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{ |
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//if can't get container then something is seriously wrong |
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return KErrNotFound; |
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} |
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//have to read the processes in a critical section |
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NKern::ThreadEnterCS(); |
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processes->Wait(); |
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aDataSize = 0; |
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//iterate through the processes adding them to the buffer |
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for(TInt i=0; i<processes->Count(); i++) |
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{ |
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DProcess* process = (DProcess*)(*processes)[i]; |
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if(process) |
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{ |
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//get process's file name length |
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DCodeSeg* codeSeg = process->iCodeSeg; |
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TUint16 fileNameLength = (codeSeg) ? (*codeSeg->iFileName).Length() : 0; |
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//get process's dynamic name length and name |
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TFullName fullName; |
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process->FullName(fullName); |
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TUint16 dynamicNameLength = fullName.Length(); |
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//increase aDataSize to reflect size of entry |
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aDataSize = Align4(aDataSize + (2*fileNameLength) + (2*dynamicNameLength) + sizeof(TProcessListEntry) - sizeof(TUint16)); |
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//if the data would not cause overflow then add it to the buffer |
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if(aDataSize <= aBuffer.MaxLength()) |
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{ |
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//Create a TProcessListEntry which references the buffer. |
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TProcessListEntry& entry = *(TProcessListEntry*)(aBuffer.Ptr() + aBuffer.Length()); |
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//set values |
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entry.iProcessId = (TUint64)process->iId; |
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entry.iFileNameLength = fileNameLength; |
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entry.iDynamicNameLength = dynamicNameLength; |
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entry.iUid3 = process->iUids.iUid[2].iUid; |
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if(codeSeg) |
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{ |
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//create TPtr to where the file name should be written |
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TPtr name = TPtr((TUint8*)&(entry.iNames[0]), fileNameLength*2, fileNameLength*2); |
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//copy the file name |
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TInt err = CopyAndExpandDes(*codeSeg->iFileName, name); |
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if(err != KErrNone) |
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{ |
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processes->Signal(); |
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NKern::ThreadLeaveCS(); |
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return KErrGeneral; |
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} |
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} |
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//create TPtr to where the dynamic name should be written |
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TPtr name = TPtr((TUint8*)(&(entry.iNames[0]) + fileNameLength), dynamicNameLength*2, dynamicNameLength*2); |
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//copy the dynamic name |
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TInt err = CopyAndExpandDes(fullName, name); |
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if(err != KErrNone) |
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{ |
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processes->Signal(); |
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NKern::ThreadLeaveCS(); |
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return KErrGeneral; |
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} |
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//set length same as aDataSize |
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aBuffer.SetLength(aDataSize); |
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} |
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} |
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} |
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//leave critical section |
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processes->Signal(); |
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NKern::ThreadLeaveCS(); |
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//return indication of whether the kernel's data was too big |
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return (aDataSize > aBuffer.Length()) ? KErrTooBig : KErrNone; |
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} |
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/** |
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Copy the descriptor aSrc to aDest and converting each byte from aSrc |
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into the two-byte equivalent. For example if aSrc contains 'XYZ' then |
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aDest will be filled with 'X\0Y\0Z\0' where \0 is the null character. |
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The length of aDest is set to twice the length of aSrc. |
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@param aSrc source descriptor |
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@param aDest destination descriptor to copy and expand aSrc into |
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@return KErrNone on success, |
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KErrArgument if the max length of aDest is less than twice the length of aSrc |
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*/ |
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TInt TListManager::CopyAndExpandDes(const TDesC& aSrc, TDes& aDest) const |
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{ |
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//check bounds |
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if(aSrc.Length() * 2 > aDest.MaxLength()) |
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{ |
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return KErrArgument; |
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} |
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//get a pointer to the start of the destination descriptor |
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TUint16* destPtr = (TUint16*)aDest.Ptr(); |
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//get pointers to the start and end of the aSrc descriptor |
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const TUint8* srcPtr = aSrc.Ptr(); |
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const TUint8* srcEnd = srcPtr + aSrc.Length(); |
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//copy the characters from aSrc into aDest, expanding to make them 16-bit characters |
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while(srcPtr < srcEnd) |
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{ |
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*destPtr = (TUint16)*srcPtr; |
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destPtr++; |
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srcPtr++; |
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} |
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//set aDest's length to reflect the new contents |
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aDest.SetLength(2*aSrc.Length()); |
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return KErrNone; |
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} |
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/** |
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Get global code segment listing |
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@param aBuffer buffer to put data in |
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@param aDataSize on return will contain size of data |
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@return KErrNone on success, |
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KErrTooBig if data won't fit in aBuffer, |
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or one of the other system wide error codes |
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*/ |
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TInt TListManager::GetGlobalCodeSegList(TDes8& aBuffer, TUint32& aDataSize) const |
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{ |
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LOG_MSG("TListManager::GetGlobalCodeSegList()"); |
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// Acquire code seg lock mutex |
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NKern::ThreadEnterCS(); |
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DMutex* codeMutex = Kern::CodeSegLock(); |
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Kern::MutexWait(*codeMutex); |
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//get global code seg list |
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SDblQue* codeSegList = Kern::CodeSegList(); |
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//create a memory info object for use in the loop |
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TModuleMemoryInfo memoryInfo; |
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//iterate through the list |
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aDataSize = 0; |
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for (SDblQueLink* codeSegPtr= codeSegList->First(); codeSegPtr!=(SDblQueLink*) (codeSegList); codeSegPtr=codeSegPtr->iNext) |
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{ |
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DEpocCodeSeg* codeSeg = (DEpocCodeSeg*)_LOFF(codeSegPtr,DCodeSeg, iLink); |
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//the code seg shouldn't be null as we're in critical section, ignore if it is null |
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if(codeSeg) |
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{ |
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//get the memory info |
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TInt err = codeSeg->GetMemoryInfo(memoryInfo, NULL); |
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if(err != KErrNone) |
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{ |
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// Release the codeseglock mutex again |
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Kern::MutexSignal(*codeMutex); |
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NKern::ThreadLeaveCS(); |
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//there's been an error so return it |
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return err; |
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} |
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//calculate data values |
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TFileName fileName(codeSeg->iFileName->Ptr()); |
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21
e7d2d738d3c2
Revision: 201010
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
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425 |
TBool isXip = (TBool)(codeSeg->iXIP); |
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//get the code seg type, can ignore error as have already checked codeSeg is not NULL |
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TCodeSegType type = EUnknownCodeSegType; |
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err = GetCodeSegType(codeSeg, type); |
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if(err != KErrNone) |
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{ |
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LOG_MSG("TListManager::GetGlobalCodeSegList() : code seg is NULL"); |
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} |
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TUint32 uid3 = codeSeg->iUids.iUid[2].iUid; |
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//append data to buffer |
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err = AppendCodeSegData(aBuffer, aDataSize, memoryInfo, isXip, type, fileName, uid3); |
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if(err != KErrNone) |
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{ |
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// Release the codeseglock mutex again |
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Kern::MutexSignal(*codeMutex); |
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NKern::ThreadLeaveCS(); |
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return KErrGeneral; |
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} |
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} |
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} |
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// Release the codeseglock mutex again |
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Kern::MutexSignal(*codeMutex); |
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NKern::ThreadLeaveCS(); |
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return (aDataSize > aBuffer.MaxLength()) ? KErrTooBig : KErrNone; |
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} |
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||
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/** |
|
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Get code segment list for a thread |
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@param aBuffer buffer to store data in |
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460 |
@param aDataSize size of kernel's data |
|
461 |
@param thread ID to get listing for |
|
462 |
||
463 |
@return KErrNone on success, |
|
464 |
KErrTooBig if data won't fit in aBuffer, |
|
465 |
or one of the other system wide error codes |
|
466 |
*/ |
|
467 |
TInt TListManager::GetCodeSegListForThread(TDes8& aBuffer, TUint32& aDataSize, const TUint64 aTargetThreadId) const |
|
468 |
{ |
|
469 |
LOG_MSG("TListManager::GetCodeSegListForThread()"); |
|
470 |
||
471 |
// open a handle to check whether the thread actually exists |
|
472 |
DThread* thread = DebugUtils::OpenThreadHandle(aTargetThreadId); |
|
473 |
if(!thread) |
|
474 |
{ |
|
475 |
return KErrArgument; |
|
476 |
} |
|
477 |
DProcess* process = thread->iOwningProcess; |
|
478 |
if(!process) |
|
479 |
{ |
|
480 |
return KErrArgument; |
|
481 |
} |
|
482 |
TUint64 processId = process->iId; |
|
483 |
thread->Close(NULL); |
|
484 |
||
485 |
return GetCodeSegListForProcess(aBuffer, aDataSize, processId); |
|
486 |
} |
|
487 |
/** |
|
488 |
Get code segment list for a process |
|
489 |
||
490 |
@param aBuffer buffer to store data in |
|
491 |
@param aDataSize size of kernel's data |
|
492 |
@param process ID to get listing for |
|
493 |
||
494 |
@return KErrNone on success, |
|
495 |
KErrTooBig if data won't fit in aBuffer, |
|
496 |
or one of the other system wide error codes |
|
497 |
*/ |
|
498 |
TInt TListManager::GetCodeSegListForProcess(TDes8& aBuffer, TUint32& aDataSize, const TUint64 aTargetProcessId) const |
|
499 |
{ |
|
500 |
LOG_MSG("TListManager::GetCodeSegListForProcess()"); |
|
501 |
||
502 |
//get the process |
|
503 |
DProcess* process = DebugUtils::OpenProcessHandle(aTargetProcessId); |
|
504 |
||
505 |
if(!process) |
|
506 |
{ |
|
507 |
return KErrArgument; |
|
508 |
} |
|
509 |
||
510 |
//enter thread critical section and acquire code segment mutex |
|
511 |
Kern::AccessCode(); |
|
512 |
||
513 |
//memory info object to use in loop |
|
514 |
TModuleMemoryInfo memoryInfo; |
|
515 |
||
516 |
//get code seg list |
|
517 |
SDblQue queue; |
|
518 |
process->TraverseCodeSegs(&queue, NULL, DCodeSeg::EMarkDebug, DProcess::ETraverseFlagAdd); |
|
519 |
||
520 |
//iterate through the list |
|
521 |
aDataSize = 0; |
|
522 |
for(SDblQueLink* codeSegPtr= queue.First(); codeSegPtr!=(SDblQueLink*) (&queue); codeSegPtr=codeSegPtr->iNext) |
|
523 |
{ |
|
524 |
//get the code seg |
|
525 |
DEpocCodeSeg* codeSeg = (DEpocCodeSeg*)_LOFF(codeSegPtr,DCodeSeg, iTempLink); |
|
526 |
||
527 |
//the code seg shouldn't be null as we're in critical section, ignore if it is null |
|
528 |
if(codeSeg) |
|
529 |
{ |
|
530 |
TInt err = codeSeg->GetMemoryInfo(memoryInfo, NULL); |
|
531 |
if(err != KErrNone) |
|
532 |
{ |
|
533 |
process->Close(NULL); |
|
534 |
return err; |
|
535 |
} |
|
536 |
||
537 |
TFileName fileName(codeSeg->iFileName->Ptr()); |
|
21
e7d2d738d3c2
Revision: 201010
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
538 |
TBool isXip = (TBool)(codeSeg->iXIP); |
0 | 539 |
|
540 |
//get the code seg type, can ignore error as have already checked codeSeg is not NULL |
|
541 |
TCodeSegType type = EUnknownCodeSegType; |
|
542 |
err = GetCodeSegType(codeSeg, type); |
|
543 |
if(err != KErrNone) |
|
544 |
{ |
|
545 |
LOG_MSG("TListManager::GetCodeSegListForProcess() : code seg is NULL"); |
|
546 |
} |
|
547 |
||
548 |
TUint32 uid3 = codeSeg->iUids.iUid[2].iUid; |
|
549 |
//append data to buffer |
|
550 |
err = AppendCodeSegData(aBuffer, aDataSize, memoryInfo, isXip, type, fileName, uid3); |
|
551 |
if(err != KErrNone) |
|
552 |
{ |
|
553 |
process->Close(NULL); |
|
554 |
return KErrGeneral; |
|
555 |
} |
|
556 |
} |
|
557 |
} |
|
558 |
||
559 |
//un mark the code segs that we've iterated over |
|
560 |
DCodeSeg::EmptyQueue(queue, DCodeSeg::EMarkDebug); |
|
561 |
||
562 |
//release mutex and leave CS |
|
563 |
Kern::EndAccessCode(); |
|
564 |
||
565 |
process->Close(NULL); |
|
566 |
return (aDataSize > aBuffer.MaxLength()) ? KErrTooBig : KErrNone; |
|
567 |
} |
|
568 |
||
569 |
/** |
|
570 |
Appends data to a specified buffer and puts the resulting size in aDataSize. |
|
571 |
If the data won't fit then aDataSize is updated to reflect what the new length |
|
572 |
would be. |
|
573 |
||
574 |
@param aBuffer buffer to append data to |
|
575 |
@param aDataSize will contain buffer size (or the size the buffer would be) on return |
|
576 |
@param aMemoryInfo info to append to buffer |
|
577 |
@param aIsXip boolean indicating whether the code segment is XIP |
|
578 |
@param aFileName file name to append to buffer |
|
579 |
||
580 |
@return KErrNone on success, or one of the other system wide error codes |
|
581 |
*/ |
|
582 |
TInt TListManager::AppendCodeSegData(TDes8& aBuffer, TUint32& aDataSize, const TModuleMemoryInfo& aMemoryInfo, const TBool aIsXip, const TCodeSegType aCodeSegType, const TDesC8& aFileName, const TUint32 aUid3) const |
|
583 |
{ |
|
584 |
//get some data elements to put in buffer |
|
585 |
TUint16 fileNameLength = aFileName.Length(); |
|
586 |
||
587 |
//calculate the resultant size |
|
588 |
aDataSize = Align4(aDataSize + sizeof(TCodeSegListEntry) + (2*fileNameLength) - sizeof(TUint16)); |
|
589 |
if(aDataSize <= aBuffer.MaxLength()) |
|
590 |
{ |
|
591 |
//Create a TCodeSegListEntry which references the buffer. |
|
592 |
TCodeSegListEntry& entry = *(TCodeSegListEntry*)(aBuffer.Ptr() + aBuffer.Length()); |
|
593 |
entry.iCodeBase = aMemoryInfo.iCodeBase; |
|
594 |
entry.iCodeSize = aMemoryInfo.iCodeSize; |
|
595 |
entry.iConstDataSize = aMemoryInfo.iConstDataSize; |
|
596 |
entry.iInitialisedDataBase = aMemoryInfo.iInitialisedDataBase; |
|
597 |
entry.iInitialisedDataSize = aMemoryInfo.iInitialisedDataSize; |
|
598 |
entry.iUninitialisedDataSize = aMemoryInfo.iUninitialisedDataSize; |
|
599 |
entry.iIsXip = aIsXip; |
|
600 |
entry.iCodeSegType = aCodeSegType; |
|
601 |
entry.iNameLength = fileNameLength; |
|
602 |
entry.iUid3 = aUid3; |
|
603 |
||
604 |
//have to convert the stored name to 16 bit unicode |
|
605 |
TPtr name = TPtr((TUint8*)&(entry.iName[0]), fileNameLength*2, fileNameLength*2); |
|
606 |
TInt err = CopyAndExpandDes(aFileName, name); |
|
607 |
if(err != KErrNone) |
|
608 |
{ |
|
609 |
return KErrGeneral; |
|
610 |
} |
|
611 |
||
612 |
//increase length |
|
613 |
aBuffer.SetLength(aDataSize); |
|
614 |
} |
|
615 |
||
616 |
return KErrNone; |
|
617 |
} |
|
618 |
||
619 |
/** |
|
620 |
Get global XIP libraries list. The ROM file system is searched for files in |
|
621 |
z:\sys\bin. The files are filtered to only include library files which |
|
622 |
correspond to the correct hardware variant. |
|
623 |
||
624 |
In the rom, a directory is represented as a list of TRomEntrys, corresponding to |
|
625 |
the files and directories in that directory. A TRomEntry corresponding to a file |
|
626 |
contains a pointer to that file's location in the rom. If the TRomEntry |
|
627 |
corresponds to a directory then it contains a pointer to that directory in the |
|
628 |
ROM header. As such, from a pointer to the root directory of the z: drive, it is |
|
629 |
possible to extract the directory contents for a particular directory (i.e. z:\sys\bin) |
|
630 |
by recursively finding the subdirectories (i.e. find 'sys' in 'z:', then 'bin' in 'sys') |
|
631 |
and then listing the contents of that directory. |
|
632 |
||
633 |
@param aBuffer buffer to store data in |
|
634 |
@param aDataSize size of kernel's data |
|
635 |
||
636 |
@return KErrNone on success, |
|
637 |
KErrTooBig if data won't fit in aBuffer, |
|
638 |
or one of the other system wide error codes |
|
639 |
*/ |
|
640 |
TInt TListManager::GetXipLibrariesList(TDes8& aBuffer, TUint32& aDataSize) const |
|
641 |
{ |
|
642 |
LOG_MSG("TListManager::GetXipLibrariesList()"); |
|
643 |
||
644 |
// z:\sys\bin expressed as 16 bit unicode.. |
|
645 |
_LIT(KZSysBin, "z\0:\0\\\0s\0y\0s\0\\\0b\0i\0n\0\\\0"); |
|
646 |
||
647 |
//array to store pointers to directory entries in |
|
648 |
RPointerArray<TRomEntry> entries; |
|
649 |
//get the entries in KZSysBin |
|
650 |
TInt err = GetDirectoryEntries(entries, KZSysBin()); |
|
651 |
if(KErrNone != err) |
|
652 |
{ |
|
653 |
entries.Close(); |
|
654 |
return err; |
|
655 |
} |
|
656 |
||
657 |
aDataSize = 0; |
|
658 |
for(TInt i=0; i<entries.Count(); i++) |
|
659 |
{ |
|
660 |
//if the entry is XIP and it's not a directory then it's a candidate to add |
|
661 |
if( (entries[i]->iAtt & KEntryAttXIP) && ! (entries[i]->iAtt & KEntryAttDir) ) |
|
662 |
{ |
|
663 |
//get a reference to the dll's header |
|
664 |
const TRomImageHeader& header = *(const TRomImageHeader*)(entries[i]->iAddressLin); |
|
665 |
||
666 |
//check that it's uid1 value corresponds to that for a library |
|
667 |
if(header.iUid1 == KDynamicLibraryUidValue) |
|
668 |
{ |
|
669 |
//get the current hardware variant |
|
670 |
TSuperPage& superPage = Kern::SuperPage(); |
|
671 |
TUint variant = superPage.iActiveVariant; |
|
672 |
TUint cpu = (variant >> 16) & 0xff; |
|
673 |
TUint asic = (variant >> 24); |
|
674 |
||
675 |
//check this dll is compatible with the current variant |
|
676 |
if(THardwareVariant(header.iHardwareVariant).IsCompatibleWith(cpu,asic,variant)) |
|
677 |
{ |
|
678 |
const TInt fileNameLength16 = entries[i]->iNameLength; |
|
679 |
const TInt fullNameLength16 = (KZSysBin().Length() / 2) + fileNameLength16; |
|
680 |
aDataSize += Align4((2 * fullNameLength16) + sizeof(TXipLibraryListEntry) - sizeof(TUint16)); |
|
681 |
||
682 |
if(aDataSize <= aBuffer.MaxLength()) |
|
683 |
{ |
|
684 |
//Create a TXipLibraryListEntry which references the buffer. |
|
685 |
TXipLibraryListEntry& libraryInfo = *(TXipLibraryListEntry*)(aBuffer.Ptr() + aBuffer.Length()); |
|
686 |
||
687 |
//add the data |
|
688 |
libraryInfo.iCodeBase = header.iCodeAddress; |
|
689 |
libraryInfo.iCodeSize = header.iTextSize; |
|
690 |
libraryInfo.iConstDataSize = header.iCodeSize - header.iTextSize; |
|
691 |
libraryInfo.iInitialisedDataBase = header.iDataBssLinearBase; |
|
692 |
libraryInfo.iInitialisedDataSize = header.iDataSize; |
|
693 |
libraryInfo.iUninitialisedDataSize = header.iBssSize; |
|
694 |
libraryInfo.iNameLength = fullNameLength16; |
|
695 |
||
696 |
//create a TPtr8 to contain the fully qualified name (i.e. z:\sys\bin\ prefixed) |
|
697 |
TPtr8 name((TUint8*)&(libraryInfo.iName[0]), 0, 2 * fullNameLength16); |
|
698 |
name.Append(KZSysBin()); |
|
699 |
name.Append(TPtr8((TUint8*)&(entries[i]->iName), 2 * fileNameLength16, 2 * fileNameLength16)); |
|
700 |
||
701 |
//increase the buffer's length to reflect the new data size |
|
702 |
aBuffer.SetLength(aDataSize); |
|
703 |
} |
|
704 |
} |
|
705 |
} |
|
706 |
} |
|
707 |
} |
|
708 |
entries.Close(); |
|
709 |
return (aDataSize == aBuffer.Length()) ? KErrNone : KErrTooBig; |
|
710 |
} |
|
711 |
||
712 |
/** |
|
713 |
Get the list of TRomEntry objects in the specified directory aDirectory |
|
714 |
||
715 |
@param aRomEntryArray array to store pointers to the TRomEntry objects in |
|
716 |
@param aDirectoryName directory to get contents of. The passed in string should be |
|
717 |
16 bit unicode and should begin with z:. Single backslashes should be used as delimiters |
|
718 |
rather than forward slashes and a terminating backslash is optional. |
|
719 |
For example: z:\sys\bin |
|
720 |
||
721 |
@return KErrNone on success, or one of the other system wide error codes |
|
722 |
*/ |
|
723 |
TInt TListManager::GetDirectoryEntries(RPointerArray<TRomEntry>& aRomEntryArray, const TDesC& aDirectoryName) const |
|
724 |
{ |
|
725 |
LOG_MSG("TListManager::GetDirectoryEntries()"); |
|
726 |
||
727 |
//definition in 16 bit unicode |
|
728 |
_LIT(KForwardSlash, "/\0"); |
|
729 |
||
730 |
//if directory has forward slashes then exit |
|
731 |
if(aDirectoryName.Find(KForwardSlash()) != KErrNotFound) |
|
732 |
{ |
|
733 |
return KErrArgument; |
|
734 |
} |
|
735 |
||
736 |
//create an array to hold the folders in aDirectoryName |
|
737 |
RArray<TPtr8> folders; |
|
738 |
||
739 |
//split the directory up into its folders, i.e. z:\sys\bin is split into { 'z:', 'sys', 'bin' } |
|
740 |
TInt err = SplitDirectoryName(aDirectoryName, folders); |
|
741 |
if(KErrNone != err) |
|
742 |
{ |
|
743 |
folders.Close(); |
|
744 |
return err; |
|
745 |
} |
|
746 |
||
747 |
if(folders.Count() == 0) |
|
748 |
{ |
|
749 |
folders.Close(); |
|
750 |
//empty string passed in |
|
751 |
return KErrArgument; |
|
752 |
} |
|
753 |
||
754 |
// z: as 16 bit unicode |
|
755 |
_LIT(KZColon, "z\0:\0"); |
|
756 |
if(folders[0].CompareF(KZColon()) != 0) |
|
757 |
{ |
|
758 |
//first argument must be z: otherwise not in rom |
|
759 |
folders.Close(); |
|
760 |
return KErrArgument; |
|
761 |
} |
|
762 |
//remove z: from array |
|
763 |
folders.Remove(0); |
|
764 |
for(TInt i=0; i<folders.Count(); i++) |
|
765 |
{ |
|
766 |
if(folders[i].Length() == 0) |
|
767 |
{ |
|
768 |
// there were two backslashes in a row |
|
769 |
folders.Close(); |
|
770 |
return KErrArgument; |
|
771 |
} |
|
772 |
} |
|
773 |
||
774 |
//get a pointer to the start of the rom root directory list |
|
775 |
TLinAddr romRootDirectoryList = Epoc::RomHeader().iRomRootDirectoryList; |
|
776 |
||
777 |
//the first 4 bytes of the rom root directory list is a count of how many sections (rom roots) there are |
|
778 |
TUint32 rootDirectoryCount = (TUint32)*(TLinAddr*)romRootDirectoryList; |
|
779 |
||
780 |
//rootDirectoryPointer will be shifted through the rom root directory list and will contain pointers to the sections in the rom |
|
781 |
TLinAddr rootDirectoryPointer = romRootDirectoryList; |
|
782 |
for(TInt i=0; i<rootDirectoryCount; i++) |
|
783 |
{ |
|
784 |
//the address of the section is stored in the second four bytes of the 8 byte pair reserved for each section |
|
785 |
rootDirectoryPointer += 8; |
|
786 |
||
787 |
//romRoot contains the address of the root of the section |
|
788 |
TLinAddr romRoot = *(TLinAddr*)rootDirectoryPointer; |
|
789 |
||
790 |
//append the directory entries from romRoot's z:\sys\bin subdirectory |
|
791 |
TInt err = GetDirectoryEntries(aRomEntryArray, folders, romRoot); |
|
792 |
if(KErrNone != err) |
|
793 |
{ |
|
794 |
folders.Close(); |
|
795 |
return err; |
|
796 |
} |
|
797 |
} |
|
798 |
folders.Close(); |
|
799 |
return KErrNone; |
|
800 |
} |
|
801 |
||
802 |
/** |
|
803 |
Recursively finds the subdirectories in aArray and stores references to the |
|
804 |
entries in the most derived subdirectory in aRomEntryArray |
|
805 |
||
806 |
@param aRomEntryArray on return will contain the entries in the directory corresponding to aArray |
|
807 |
@param aArray an array containing the directory to get the entries for, i.e. { 'sys', 'bin' } |
|
808 |
@param aAddress address in rom to being searching from |
|
809 |
||
810 |
@param KErrNone on success, or one of the other system wide error codes |
|
811 |
*/ |
|
812 |
TInt TListManager::GetDirectoryEntries(RPointerArray<TRomEntry>& aRomEntryArray, RArray<TPtr8>& aArray, TLinAddr& aAddress) const |
|
813 |
{ |
|
814 |
LOG_MSG2("TListManager::GetDirectoryEntries() aAddress: 0x%08x", aAddress); |
|
815 |
||
816 |
//find the next subdirectory and store its address in aAddress, return error if we can't find it |
|
817 |
TInt err = FindDirectory(aArray[0], aAddress); |
|
818 |
if(err != KErrNone) |
|
819 |
{ |
|
820 |
return err; |
|
821 |
} |
|
822 |
||
823 |
//if this is the most derived sub-directory (i.e. the bin of z:\sys\bin) then get the dir contents |
|
824 |
if(aArray.Count() == 1) |
|
825 |
{ |
|
826 |
return GetDirectoryContents(aRomEntryArray, aAddress); |
|
827 |
} |
|
828 |
else |
|
829 |
{ |
|
830 |
//get the next subdirectory's contents |
|
831 |
aArray.Remove(0); |
|
832 |
return GetDirectoryEntries(aRomEntryArray, aArray, aAddress); |
|
833 |
} |
|
834 |
} |
|
835 |
||
836 |
/** |
|
837 |
Return the entries of a directory in the rom |
|
838 |
||
839 |
@param aRomEntryArray array to store the entries in |
|
840 |
@param aAddress address of a directory block in the rom |
|
841 |
*/ |
|
842 |
TInt TListManager::GetDirectoryContents(RPointerArray<TRomEntry>& aRomEntryArray, const TLinAddr aAddress) const |
|
843 |
{ |
|
844 |
LOG_MSG("TListManager::GetDirectoryContents()"); |
|
845 |
||
846 |
TLinAddr address = aAddress; |
|
847 |
||
848 |
//get the size in bytes of the block of rom to iterate over |
|
849 |
const TUint32 sizeInBytes = *(TUint32*)aAddress; |
|
850 |
||
851 |
//get address of first TRomEntry |
|
852 |
const TLinAddr initialAddress = aAddress + sizeof(TUint32); |
|
853 |
||
854 |
//get pointer to subdir count |
|
855 |
address = initialAddress + sizeInBytes; |
|
856 |
||
857 |
//the upper two bytes of this entry contain the number of files in this directory, and the lower two bytes |
|
858 |
//contains the number of subdirectories in this directory |
|
859 |
TUint32 filesAndDirectories = *(TUint32*)address; |
|
860 |
||
861 |
//get number of subdirectories in this directory |
|
862 |
const TUint16 subDirCount = filesAndDirectories & 0xFFFF; |
|
863 |
||
864 |
//get the number of files in this dir |
|
865 |
const TUint16 filesCount = filesAndDirectories >> 16; |
|
866 |
||
867 |
//get total number of entries in dir |
|
868 |
const TUint numDirectoryEntries = subDirCount + filesCount; |
|
869 |
||
870 |
//set address to start of first entry |
|
871 |
address = initialAddress; |
|
872 |
||
873 |
for(TInt i=0; i<numDirectoryEntries; i++) |
|
874 |
{ |
|
875 |
TRomEntry* romEntry = (TRomEntry*)address; |
|
876 |
||
877 |
//store the entry |
|
878 |
TInt err = aRomEntryArray.Append(romEntry); |
|
879 |
if(KErrNone != err) |
|
880 |
{ |
|
881 |
return err; |
|
882 |
} |
|
883 |
||
884 |
//length of the name of the rom entry |
|
885 |
TInt nameLength = romEntry->iNameLength; |
|
886 |
||
887 |
//get the size of the entry including the name |
|
888 |
TUint32 romEntrySize = sizeof(TRomEntry) - sizeof(romEntry->iName) + (2 * nameLength); |
|
889 |
//adjust the address to the next entry |
|
890 |
address += Align4(romEntrySize); |
|
891 |
} |
|
892 |
return KErrNone; |
|
893 |
} |
|
894 |
||
895 |
/** |
|
896 |
Finds the subdirectory with name aDirectory in the directory at aAddress |
|
897 |
||
898 |
@param aDirectory name of subdirectory to search for (i.e. 'bin') |
|
899 |
@param aAddress address in rom of containing directory (i.e. address of 'sys' directory) |
|
900 |
||
901 |
@param KErrNone if aDirectory could be found in aAddress, KErrNotFound if it could not be found |
|
902 |
*/ |
|
903 |
TInt TListManager::FindDirectory(const TDesC& aDirectory, TLinAddr& aAddress) const |
|
904 |
{ |
|
905 |
LOG_MSG3("TListManager::FindDirectory() aDirectory: %S, aAddress: 0x%08x", &aDirectory, aAddress); |
|
906 |
||
907 |
//get the directory's contents |
|
908 |
RPointerArray<TRomEntry> dirContents; |
|
909 |
TInt err = GetDirectoryContents(dirContents, aAddress); |
|
910 |
if(KErrNone != err) |
|
911 |
{ |
|
912 |
dirContents.Close(); |
|
913 |
return err; |
|
914 |
} |
|
915 |
for(TInt i=0; i<dirContents.Count(); i++) |
|
916 |
{ |
|
917 |
//create a reference to the TRomEntry in the rom to access its attributes |
|
918 |
TRomEntry& romEntry = *(dirContents[i]); |
|
919 |
if(romEntry.iAtt & KEntryAttDir) |
|
920 |
{ |
|
921 |
// this entry's a directory so check if it matches aDirectory |
|
922 |
const TInt nameLength = romEntry.iNameLength; |
|
923 |
TPtr8 name((TUint8*)&(romEntry.iName), nameLength * 2, nameLength * 2); |
|
924 |
if(0 == aDirectory.CompareF(name)) |
|
925 |
{ |
|
926 |
// names matched so get the address of this directory's contents |
|
927 |
aAddress = romEntry.iAddressLin; |
|
928 |
dirContents.Close(); |
|
929 |
return KErrNone; |
|
930 |
} |
|
931 |
} |
|
932 |
} |
|
933 |
dirContents.Close(); |
|
934 |
//couldn't find it so return error |
|
935 |
return KErrNotFound; |
|
936 |
} |
|
937 |
||
938 |
/** |
|
939 |
Helper function to get code seg type. |
|
940 |
||
941 |
@param aCodeSeg code seg to get type of |
|
942 |
@param aType will contain type on return |
|
943 |
||
944 |
@return KErrNone on success, KErrNotFound if aCodeSeg is NULL |
|
945 |
*/ |
|
946 |
TInt TListManager::GetCodeSegType(const DCodeSeg* aCodeSeg, TCodeSegType& aType) const |
|
947 |
{ |
|
948 |
if(!aCodeSeg) |
|
949 |
{ |
|
950 |
return KErrNotFound; |
|
951 |
} |
|
952 |
||
953 |
if(aCodeSeg->IsExe()) |
|
954 |
{ |
|
955 |
aType = EExeCodeSegType; |
|
956 |
return KErrNone; |
|
957 |
} |
|
958 |
||
959 |
if(aCodeSeg->IsDll()) |
|
960 |
{ |
|
961 |
aType = EDllCodeSegType; |
|
962 |
return KErrNone; |
|
963 |
} |
|
964 |
||
965 |
aType = EUnknownCodeSegType; |
|
966 |
return KErrNone; |
|
967 |
} |
|
968 |
||
969 |
||
970 |
/** |
|
971 |
Split a directory name into its subdirectories, using a 16-bit backslash ('\\\0') as a delimiter. |
|
972 |
For example z:\sys\bin would be split into { 'z:', 'sys', 'bin' } |
|
973 |
||
974 |
@param aDirectoryName directory name to split into subdirectories |
|
975 |
@param aSubDirectories array to store the subdirectories in |
|
976 |
*/ |
|
977 |
TInt TListManager::SplitDirectoryName(const TDesC& aDirectoryName, RArray<TPtr8>& aSubDirectories) const |
|
978 |
{ |
|
979 |
//definition in 16 bit unicode |
|
980 |
_LIT(KBackSlash, "\\\0"); |
|
981 |
||
982 |
//split the directory up into its folders, i.e. z:\sys\bin is split into |
|
983 |
TPtr8 string((TUint8*)aDirectoryName.Ptr(), aDirectoryName.Length(), aDirectoryName.Length()); |
|
984 |
while(string.Ptr() < aDirectoryName.Ptr() + aDirectoryName.Length()) |
|
985 |
{ |
|
986 |
TInt offset = string.Find(KBackSlash()); |
|
987 |
if(offset == KErrNotFound) |
|
988 |
{ |
|
989 |
//reached the end of the string |
|
990 |
offset = string.Length(); |
|
991 |
} |
|
992 |
//adjustedOffset takes account of the end of the string case |
|
993 |
TInt adjustedOffset = (offset == string.Length()) ? offset : offset + KBackSlash().Length(); |
|
994 |
//add sub-folder name |
|
995 |
TInt err = aSubDirectories.Append(TPtr8((TUint8*)string.Ptr(), offset, offset)); |
|
996 |
if(KErrNone != err) |
|
997 |
{ |
|
998 |
return err; |
|
999 |
} |
|
1000 |
//remove the sub-folder name and continue |
|
1001 |
string.Set((TUint8*)string.Ptr() + adjustedOffset, string.Length() - adjustedOffset, string.Length() - adjustedOffset); |
|
1002 |
} |
|
1003 |
return KErrNone; |
|
1004 |
} |
|
1005 |
||
1006 |
||
1007 |