Source code of Windows XP (NT5)
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//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000-2001 Microsoft Corporation
//
// Module Name:
// CEnumClusterResources.cpp
//
// Description:
// This file contains the definition of the CEnumClusterResources
// class.
//
// The class CEnumClusterResources is the enumeration of cluster
// storage devices. It implements the IEnumClusCfgManagedResources
// interface.
//
// Documentation:
//
// Header File:
// CEnumClusterResources.h
//
// Maintained By:
// Galen Barbee (GalenB) 12-JUN-2000
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// Include Files
//////////////////////////////////////////////////////////////////////////////
#include "pch.h"
#include "CEnumClusterResources.h"
#include "CClusterResource.h"
//////////////////////////////////////////////////////////////////////////////
// Constant Definitions
//////////////////////////////////////////////////////////////////////////////
DEFINE_THISCLASS( "CEnumClusterResources" );
//*************************************************************************//
/////////////////////////////////////////////////////////////////////////////
// CEnumClusterResources class
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::S_HrCreateInstance()
//
// Description:
// Create a CEnumClusterResources instance.
//
// Arguments:
// None.
//
// Return Values:
// Pointer to CEnumClusterResources instance.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::S_HrCreateInstance( IUnknown ** ppunkOut )
{
TraceFunc( "" );
HRESULT hr;
CEnumClusterResources * pccpd = NULL;
if ( ppunkOut == NULL )
{
hr = THR( E_POINTER );
goto Cleanup;
} // if:
pccpd = new CEnumClusterResources();
if ( pccpd == NULL )
{
hr = THR( E_OUTOFMEMORY );
goto Cleanup;
} // if: error allocating object
hr = THR( pccpd->HrInit() );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if: HrInit() failed
hr = THR( pccpd->TypeSafeQI( IUnknown, ppunkOut ) );
Cleanup:
if ( FAILED( hr ) )
{
LogMsg( L"[SRV] CEnumClusterResources::S_HrCreateInstance() failed. (hr = %#08x)", hr );
} // if:
if ( pccpd != NULL )
{
pccpd->Release();
} // if:
HRETURN( hr );
} //*** CEnumClusterResources::S_HrCreateInstance()
//////////////////////////////////////////////////////////////////////////////
//++
//
// IUnknown *
// CEnumClusterResources::S_RegisterCatIDSupport()
//
// Description:
// Registers/unregisters this class with the categories that it belongs
// to.
//
// Arguments:
// IN ICatRegister * picrIn
// Used to register/unregister our CATID support.
//
// IN BOOL fCreateIn
// When true we are registering the server. When false we are
// un-registering the server.
//
// Return Values:
// S_OK
// Success.
//
// E_INVALIDARG
// The passed in ICatRgister pointer was NULL.
//
// other HRESULTs
// Registration/Unregistration failed.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::S_RegisterCatIDSupport(
ICatRegister * picrIn,
BOOL fCreateIn
)
{
TraceFunc( "" );
HRESULT hr = S_OK;
CATID rgCatIds[ 1 ];
if ( picrIn == NULL )
{
hr = THR( E_INVALIDARG );
goto Cleanup;
} // if:
rgCatIds[ 0 ] = CATID_EnumClusCfgManagedResources;
if ( fCreateIn )
{
hr = THR( picrIn->RegisterClassImplCategories( CLSID_EnumPhysicalDisks, 1, rgCatIds ) );
} // if:
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::S_RegisterCatIDSupport()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::CEnumClusterResources()
//
// Description:
// Constructor of the CEnumClusterResources class. This initializes
// the m_cRef variable to 1 instead of 0 to account of possible
// QueryInterface failure in DllGetClassObject.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
CEnumClusterResources::CEnumClusterResources( void )
: m_cRef( 1 )
, m_lcid( LOCALE_NEUTRAL )
, m_fLoadedResources( false )
{
TraceFunc( "" );
// Increment the count of components in memory so the DLL hosting this
// object cannot be unloaded.
InterlockedIncrement( &g_cObjects );
Assert( m_picccCallback == NULL );
Assert( m_prgResources == NULL );
Assert( m_idxNext == 0 );
Assert( m_idxEnumNext == 0 );
Assert( m_bstrNodeName == NULL );
Assert( m_cTotalResources == 0 );
TraceFuncExit();
} //*** CEnumClusterResources::CEnumClusterResources
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::~CEnumClusterResources()
//
// Description:
// Desstructor of the CEnumClusterResources class.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
CEnumClusterResources::~CEnumClusterResources( void )
{
TraceFunc( "" );
ULONG idx;
if ( m_picccCallback != NULL )
{
m_picccCallback->Release();
} // if:
for ( idx = 0; idx < m_idxNext; idx++ )
{
if ( (*m_prgResources)[ idx ] != NULL )
{
((*m_prgResources)[ idx ])->Release();
} // end if:
} // for:
TraceFree( m_prgResources );
TraceSysFreeString( m_bstrNodeName );
// There's going to be one less component in memory. Decrement component count.
InterlockedDecrement( &g_cObjects );
TraceFuncExit();
} //*** CEnumClusterResources::~CEnumClusterResources
//*************************************************************************//
/////////////////////////////////////////////////////////////////////////////
// CEnumClusterResources -- IUknkown interface.
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//++
//
// STDMETHODIMP_( ULONG )
// CEnumClusterResources:: [IUNKNOWN] AddRef()
//
// Description:
// Increment the reference count of this object by one.
//
// Arguments:
// None.
//
// Return Value:
// The new reference count.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_( ULONG )
CEnumClusterResources::AddRef( void )
{
TraceFunc( "[IUnknown]" );
InterlockedIncrement( & m_cRef );
RETURN( m_cRef );
} //*** CEnumClusterResources::AddRef()
//////////////////////////////////////////////////////////////////////////////
//++
//
// STDMETHODIMP_( ULONG )
// CEnumClusterResources:: [IUNKNOWN] Release()
//
// Description:
// Decrement the reference count of this object by one.
//
// Arguments:
// None.
//
// Return Value:
// The new reference count.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_( ULONG )
CEnumClusterResources::Release( void )
{
TraceFunc( "[IUnknown]" );
LONG cRef;
cRef = InterlockedDecrement( &m_cRef );
if ( cRef == 0 )
{
TraceDo( delete this );
} // if: reference count equal to zero
RETURN( cRef );
} //*** CEnumClusterResources::Release()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources:: [INKNOWN] QueryInterface()
//
// Description:
// Query this object for the passed in interface.
//
// Arguments:
// IN REFIID riid,
// Id of interface requested.
//
// OUT void ** ppv
// Pointer to the requested interface.
//
// Return Value:
// S_OK
// If the interface is available on this object.
//
// E_NOINTERFACE
// If the interface is not available.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::QueryInterface( REFIID riid, void ** ppv )
{
TraceQIFunc( riid, ppv );
HRESULT hr = E_NOINTERFACE;
if ( IsEqualIID( riid, IID_IUnknown ) )
{
*ppv = static_cast< IEnumClusCfgManagedResources * >( this );
hr = S_OK;
} // if: IUnknown
else if ( IsEqualIID( riid, IID_IEnumClusCfgManagedResources ) )
{
*ppv = TraceInterface( __THISCLASS__, IEnumClusCfgManagedResources, this, 0 );
hr = S_OK;
} // else if:
else if ( IsEqualIID( riid, IID_IClusCfgInitialize ) )
{
*ppv = TraceInterface( __THISCLASS__, IClusCfgInitialize, this, 0 );
hr = S_OK;
} // else if:
if ( SUCCEEDED( hr ) )
{
((IUnknown *) *ppv)->AddRef( );
} // if: success
QIRETURN_IGNORESTDMARSHALLING( hr, riid );
} //*** CEnumClusterResources::QueryInterface()
//*************************************************************************//
/////////////////////////////////////////////////////////////////////////////
// CEnumClusterResources -- IClusCfgInitialize interface.
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Initialize()
//
// Description:
// Initialize this component.
//
// Arguments:
// IN IUknown * punkCallbackIn
//
// IN LCID lcidIn
//
// Return Value:
// S_OK
// Success
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Initialize(
IUnknown * punkCallbackIn,
LCID lcidIn
)
{
TraceFunc( "[IClusCfgInitialize]" );
Assert( m_picccCallback == NULL );
HRESULT hr = S_OK;
m_lcid = lcidIn;
if ( punkCallbackIn == NULL )
{
hr = THR( E_POINTER );
goto Cleanup;
} // if:
hr = THR( punkCallbackIn->TypeSafeQI( IClusCfgCallback, &m_picccCallback ) );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
hr = THR( HrGetComputerName( ComputerNameNetBIOS, &m_bstrNodeName ) );
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::Initialize()
//*************************************************************************//
/////////////////////////////////////////////////////////////////////////////
// CEnumClusterResources -- IEnumClusCfgManagedResources interface.
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Next()
//
// Description:
//
// Arguments:
//
// Return Value:
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Next(
ULONG cNumberRequestedIn,
IClusCfgManagedResourceInfo ** rgpManagedResourceInfoOut,
ULONG * pcNumberFetchedOut
)
{
TraceFunc( "[IEnumClusCfgManagedResources]" );
HRESULT hr = S_FALSE;
ULONG cFetched = 0;
ULONG idx;
ULONG idxOutBuf;
IClusCfgManagedResourceInfo * pccsdi;
IUnknown * punk;
ULONG ulStop;
if ( rgpManagedResourceInfoOut == NULL )
{
hr = THR( E_POINTER );
STATUS_REPORT( TASKID_Major_Find_Devices, TASKID_Minor_Next_Enum_Cluster_Resources, IDS_ERROR_NULL_POINTER, hr );
goto Cleanup;
} // if:
if ( !m_fLoadedResources )
{
hr = THR( HrGetResources() );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
} // if:
cFetched = ulStop = min( cNumberRequestedIn, ( m_idxNext - m_idxEnumNext ) );
for ( idx = 0, idxOutBuf = 0; idx < ulStop; idx++, m_idxEnumNext++ )
{
punk = (*m_prgResources)[ m_idxEnumNext ];
if ( punk != NULL )
{
hr = THR( punk->TypeSafeQI( IClusCfgManagedResourceInfo, &pccsdi ) );
if ( FAILED( hr ) )
{
break;
} // if:
rgpManagedResourceInfoOut[ idxOutBuf++ ] = pccsdi;
} // if:
else
{
cFetched--;
} // else:
} // for:
if ( FAILED( hr ) )
{
ULONG idxStop = idxOutBuf - 1;
m_idxEnumNext -= idx;
for ( idx = 0; idx < idxStop; idx++ )
{
(rgpManagedResourceInfoOut[ idx ])->Release();
} // for:
cFetched = 0;
goto Cleanup;
} // if:
if ( cFetched < cNumberRequestedIn )
{
hr = S_FALSE;
} // if:
Cleanup:
if ( pcNumberFetchedOut != NULL )
{
*pcNumberFetchedOut = cFetched;
} // if:
HRETURN( hr );
} //*** CEnumClusterResources::Next()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Skip()
//
// Description:
//
// Arguments:
//
// Return Value:
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Skip( ULONG cNumberToSkipIn )
{
TraceFunc( "[IEnumClusCfgManagedResources]" );
HRESULT hr = S_OK;
m_idxEnumNext += cNumberToSkipIn;
if ( m_idxEnumNext >= m_idxNext )
{
m_idxEnumNext = m_idxNext;
hr = STHR( S_FALSE );
} // if:
HRETURN( hr );
} //*** CEnumClusterResources::Skip()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Reset()
//
// Description:
//
// Arguments:
//
// Return Value:
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Reset( void )
{
TraceFunc( "[IEnumClusCfgManagedResources]" );
m_idxEnumNext = 0;
HRETURN( S_OK );
} //*** CEnumClusterResources::Reset()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Clone()
//
// Description:
//
// Arguments:
//
// Return Value:
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Clone(
IEnumClusCfgManagedResources ** ppEnumClusCfgStorageDevicesOut
)
{
TraceFunc( "[IEnumClusCfgManagedResources]" );
HRESULT hr = S_OK;
if ( ppEnumClusCfgStorageDevicesOut == NULL )
{
hr = THR( E_POINTER );
STATUS_REPORT( TASKID_Major_Find_Devices, TASKID_Minor_Clone_Enum_Cluster_Resources, IDS_ERROR_NULL_POINTER, hr );
goto Cleanup;
} // if:
hr = THR( E_NOTIMPL );
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::Clone()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::Count
//
// Description:
//
// Arguments:
//
// Return Value:
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumClusterResources::Count( DWORD * pnCountOut )
{
HRESULT hr = S_OK;
if ( pnCountOut == NULL )
{
hr = THR( E_POINTER );
goto Cleanup;
} // if:
if ( !m_fLoadedResources )
{
hr = THR( HrGetResources() );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
} // if:
*pnCountOut = m_cTotalResources;
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::Count
//*************************************************************************//
/////////////////////////////////////////////////////////////////////////////
// CEnumClusterResources class -- Private Methods.
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::HrInit()
//
// Description:
// Initialize this component.
//
// Arguments:
// None.
//
// Return Value:
//
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::HrInit( void )
{
TraceFunc( "" );
HRESULT hr = S_OK;
HRETURN( hr );
} //*** CEnumClusterResources::HrInit()
/////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::HrGetResources()
//
// Description:
//
// Arguments:
//
//
// Return Value:
//
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::HrGetResources( void )
{
TraceFunc( "" );
HRESULT hr = THR( HrEnumNodeResources( m_bstrNodeName ) );
if ( FAILED( hr ) )
goto Cleanup;
m_fLoadedResources = true;
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::HrGetResources()
/////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources::HrCreateResourceAndAddToArray()
//
// Description:
//
// Arguments:
//
//
// Return Value:
//
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::HrCreateResourceAndAddToArray(
HCLUSTER hClusterIn,
HRESOURCE hResourceIn
)
{
TraceFunc( "" );
HRESULT hr = S_OK;
IUnknown * punk = NULL;
IClusCfgLoadResource * picclr = NULL;
hr = THR( CClusterResource::S_HrCreateInstance( &punk ) );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
hr = THR( HrSetInitialize( punk, m_picccCallback, m_lcid ) );
if ( FAILED( hr ))
{
goto Cleanup;
} // if:
hr = THR( punk->TypeSafeQI( IClusCfgLoadResource, &picclr ) );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
hr = THR( picclr->LoadResource( hClusterIn, hResourceIn ) );
if ( FAILED( hr ) )
{
goto Cleanup;
} // if:
hr = THR( HrAddResourceToArray( punk ) );
Cleanup:
if ( picclr != NULL )
{
picclr->Release();
} // if:
if ( punk != NULL )
{
punk->Release();
} // if:
HRETURN( hr );
} //*** CEnumClusterResources::HrCreateResourceAndAddToArray()
/////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources:HrAddResourceToArray()
//
// Description:
// Add the passed in disk to the array of punks that holds the disks.
//
// Arguments:
//
//
// Return Value:
// S_OK
// Success
//
// E_OUTOFMEMORY
// Couldn't allocate memeory.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::HrAddResourceToArray( IUnknown * punkIn )
{
TraceFunc( "" );
HRESULT hr = S_OK;
IUnknown * ((*prgpunks)[]);
prgpunks = (IUnknown *((*)[])) TraceReAlloc( m_prgResources, sizeof( IUnknown * ) * ( m_idxNext + 1 ), HEAP_ZERO_MEMORY );
if ( prgpunks == NULL )
{
hr = THR( E_OUTOFMEMORY );
STATUS_REPORT( TASKID_Major_Find_Devices, TASKID_Minor_HrAddResourceToArray, IDS_ERROR_OUTOFMEMORY, hr );
goto Cleanup;
} // if:
m_prgResources = prgpunks;
(*m_prgResources)[ m_idxNext++ ] = punkIn;
punkIn->AddRef();
m_cTotalResources += 1;
Cleanup:
HRETURN( hr );
} //*** CEnumClusterResources::HrAddResourceToArray()
/////////////////////////////////////////////////////////////////////////////
//++
//
// CEnumClusterResources:HrNodeResourceCallback()
//
// Description:
// Called by CClusterUtils::HrEnumNodeResources() when it finds a
// resource for this node.
//
// Arguments:
//
//
// Return Value:
// S_OK
// Success.
//
// Win32 Error
// something failed.
//
// Remarks:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumClusterResources::HrNodeResourceCallback(
HCLUSTER hClusterIn,
HRESOURCE hResourceIn
)
{
TraceFunc( "" );
HRETURN( HrCreateResourceAndAddToArray( hClusterIn, hResourceIn ) );
} //*** CEnumClusterResources::HrNodeResourceCallback()