diff -r 000000000000 -r 7f656887cf89 commands/ffstrace/ffstrace.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commands/ffstrace/ffstrace.cpp	Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,184 @@
+// ffstrace.cpp
+// 
+// Copyright (c) 2010 Accenture. All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+// 
+// Initial Contributors:
+// Accenture - Initial contribution
+//
+
+#include <fshell/extrabtrace.h>
+#include <fshell/btrace_parser.h>
+
+#include <fshell/ioutils.h>
+#include <fshell/common.mmh>
+
+using namespace IoUtils;
+
+class CCmdFfstrace : public CCommandBase, public MBtraceObserver
+	{
+public:
+	static CCommandBase* NewLC();
+	~CCmdFfstrace();
+private:
+	CCmdFfstrace();
+	void HandleBtraceFrameL(const TBtraceFrame& aFrame);
+private: // From CCommandBase.
+	virtual const TDesC& Name() const;
+	virtual void DoRunL();
+	virtual void ArgumentsL(RCommandArgumentList& aArguments);
+	virtual void OptionsL(RCommandOptionList& aOptions);
+private:
+	enum TCmd
+		{
+		EMonitor,
+		ELoad,
+		EUnload,
+		};
+	TCmd iCommand;
+private:
+	CBtraceReader* iBtraceReader;
+	};
+
+EXE_BOILER_PLATE(CCmdFfstrace)
+
+CCommandBase* CCmdFfstrace::NewLC()
+	{
+	CCmdFfstrace* self = new(ELeave) CCmdFfstrace();
+	CleanupStack::PushL(self);
+	self->BaseConstructL();
+	return self;
+	}
+
+CCmdFfstrace::~CCmdFfstrace()
+	{
+	delete iBtraceReader;
+	}
+
+CCmdFfstrace::CCmdFfstrace()
+	: CCommandBase(EManualComplete)
+	{
+	}
+
+const TDesC& CCmdFfstrace::Name() const
+	{
+	_LIT(KName, "ffstrace");	
+	return KName;
+	}
+
+void CCmdFfstrace::ArgumentsL(RCommandArgumentList& aArguments)
+	{
+	aArguments.AppendEnumL((TInt&)iCommand, _L("command"));
+	}
+
+void CCmdFfstrace::OptionsL(RCommandOptionList& /*aOptions*/)
+	{
+	//TODO: aOptions.AppendBoolL(iOpt, _L("example_opt"));
+	//TODO: Also remember to update the CIF file for any options you add.
+	}
+
+void CCmdFfstrace::DoRunL()
+	{
+	_LIT(KPluginDll, "ffstraceplugin.fxt");
+	_LIT(KFfsTracerPluginName, "FfsTracePlugin");
+	if (iCommand == EMonitor || iCommand == ELoad)
+		{
+		TInt err = FsL().AddPlugin(KPluginDll);
+		if (err && err != KErrAlreadyExists) LeaveIfErr(err, _L("Couldn't load filesystem plugin %S"), &KPluginDll);
+
+		err = FsL().MountPlugin(KFfsTracerPluginName);
+		//TODO handle this being called repeatedly
+		LeaveIfErr(err, _L("Couldn't mount filesystem plugin %S"), &KFfsTracerPluginName);
+		}
+	else if (iCommand == EUnload)
+		{
+		FsL().DismountPlugin(KFfsTracerPluginName);
+		LeaveIfErr(FsL().RemovePlugin(KFfsTracerPluginName), _L("No plugin to unload"));
+		}
+
+	if (iCommand == EMonitor)
+		{
+		iBtraceReader = CBtraceReader::NewL(CBtraceReader::EFlushOnBtraceThreshold, 1024*1024, 512*1024);
+		iBtraceReader->AddObserverL(BTrace::EFfsTrace, *this);
+		iBtraceReader->SetMultipartReassemblyL(10);
+		TBtraceTickCount now;
+		now.SetToNow();
+		iBtraceReader->Start(now, 1000000);
+		}
+	else
+		{
+		Complete(KErrNone);
+		}
+	}
+
+void CCmdFfstrace::HandleBtraceFrameL(const TBtraceFrame& aFrame)
+	{
+	if (aFrame.iCategory == BTrace::EFfsTrace)
+		{
+		TInt fn = aFrame.iSubCategory & ~BTrace::EFfsPost;
+		TBool post = aFrame.iSubCategory & BTrace::EFfsPost;
+		TUint threadId = *(TUint*)aFrame.iData.Ptr();
+		TPtrC name((TUint16*)(aFrame.iData.Ptr()+4), (aFrame.iData.Size()-4)/2);
+		TPtrC newName;
+		// Not everything gets as far as post - if an error occurs during the pre checking for eg
+		if (post) Printf(_L("-"));
+		else Printf(_L("+"));
+
+		TBool twoNames = (fn == BTrace::EFfsRename || fn == BTrace::EFfsFileRename);
+		if (twoNames)
+			{
+			TInt separator = name.Locate(0);
+			if (separator != KErrNotFound)
+				{
+				newName.Set(name.Mid(separator+1));
+				name.Set(name.Left(separator));
+				}
+			}
+
+		switch (fn)
+			{
+			case BTrace::EFfsDelete:
+				Printf(_L("Delete %S"), &name);
+				break;
+			case BTrace::EFfsFileOpen:
+				Printf(_L("Open %S"), &name);
+				break;
+			case BTrace::EFfsFileCreate:
+				Printf(_L("Create %S"), &name);
+				break;
+			case BTrace::EFfsFileSubClose:
+				Printf(_L("Close %S"), &name);
+				break;
+			case BTrace::EFfsFileReplace:
+				Printf(_L("Replace %S"), &name);
+				break;
+			case BTrace::EFfsFileTemp:
+				Printf(_L("Open temp %S"), &name);
+				break;
+			case BTrace::EFfsRename:
+			case BTrace::EFfsFileRename:
+				Printf(_L("Rename from %S to %S"), &name, &newName);
+				break;
+			case BTrace::EFfsEntry:
+				Printf(_L("RFs::Entry %S"), &name);
+				break;
+			default:
+				Printf(_L("Event %d"), fn);
+				break;
+			}
+		Printf(_L(" from thread %u"), threadId);
+		RThread thread;
+		TInt err = thread.Open(threadId);
+		if (err == KErrNone)
+			{
+			Printf(_L(" "));
+			TFullName name = thread.FullName();
+			Write(name);
+			thread.Close();
+			}
+		Printf(_L("\r\n"));
+		}
+	}