CLUSCTL_RESOURCE_GET_RO_PRIVATE_PROPERTIES control code

Article
05/31/2018

Retrieves the read-only private properties for a resource. Applications use this control code as a ClusterResourceControl parameter, and resource DLLs receive the control code as a ResourceControl parameter.

ClusterResourceControl( 
  hResource,                                         // resource handle
  hHostNode,                                         // optional host node
  CLUSCTL_RESOURCE_GET_RO_PRIVATE_PROPERTIES,        // this control code
  NULL,                                              // input buffer (not used)
  0,                                                 // input buffer size (not used)
  lpOutBuffer,                                       // output buffer: property list
  cbOutBufferSize,                                   // allocated buffer size (bytes)
  lpcbBytesReturned );                               // actual size of resulting data (bytes)

Parameters

The following control code function and DLL support parameter is specific to this control code. For complete parameter descriptions, see ClusterResourceControl or ResourceControl.

lpOutBuffer: On a successful return, points to a property list containing the resource's read-only private properties.

Return value

ClusterResourceControl returns one of the following values.

ERROR_SUCCESS

The operation completed successfully. The lpcbBytesReturned parameter points to the actual size of the returned data.

ERROR_MORE_DATA

234 (0xEA)

The output buffer pointed to by lpOutBuffer was not large enough to hold the data resulting from the operation. The lpcbBytesReturned parameter points to the size required for the output buffer.

System error code

If any other value is returned, then the operation failed. The value of lpcbBytesReturned is unreliable.

Implementations of ResourceControl can return the above values or the following value.

ERROR_INVALID_FUNCTION

Incorrect function. Requests that the Resource Monitor perform default processing (if any) for the control code addition to processing supplied by the DLL (if any).

Remarks

For information on working with property lists, see Using Property Lists.

Do not use the CLUSCTL_RESOURCE_GET_RO_PRIVATE_PROPERTIES control code in any resource DLL entry point function. This control code can safely be called from a worker thread. For more information, see Function Calls to Avoid in Resource DLLs.

ClusAPI.h defines the 32 bits of CLUSCTL_RESOURCE_GET_RO_PRIVATE_PROPERTIES as follows (for more information, see Control Code Architecture).

Component	Bit location	Value
Object code	24 31	CLUS_OBJECT_RESOURCE (0x1)
Global bit	23	CLUS_NOT_GLOBAL (0x0)
Modify bit	22	CLUS_NO_MODIFY (0x0)
User bit	21	CLCTL_CLUSTER_BASE (0x0)
Type bit	20	External (0x0)
Operation code	0 23	CLCTL_GET_RO_PRIVATE_PROPERTIES (0x7d)
Access code	0 1	CLUS_ACCESS_READ (0x1)

Resource DLL Support

Required. Always support the CLUSCTL_RESOURCE_GET_RO_PRIVATE_PROPERTIES control code in your implementation of ResourceControl. Return a property list that includes all of the read-only properties specific to your resource. Remember to terminate the list with CLUSPROP_SYNTAX_ENDMARK, an enumerator from the CLUSTER_PROPERTY_SYNTAX enumeration. For more information on working with property lists, see Creating Property Lists.

As a general guideline, the Resource Monitor should handle all of the control codes for common properties, while your DLL should handle all control codes for private properties.

For more information on the ResourceControl entry point function, see Implementing ResourceControl.

Examples

#include <windows.h>
#include <ClusApi.h>

//////////////////////////////////////////////////////////////////////

#include "ClusDocEx.h"

//////////////////////////////////////////////////////////////////////

#ifndef _CLUSDOCEX_RESGETROPPROPS_CPP
#define _CLUSDOCEX_RESGETROPPROPS_CPP

LPVOID ClusDocEx_ResGetROPProperties
(
    IN HRESOURCE hRes,
    IN HNODE     hNode,
    OUT LPDWORD  lpcbDataSize
)
-------------------------------------|--------------------------------------------------------------------------------------|
| Minimum supported client<br/> | None supported<br/>                                                            |
| Minimum supported server<br/> | Windows Server 2008 Enterprise, Windows Server 2008 Datacenter<br/>            |
| Header<br/>                   | <dl> <dt>ClusAPI.h</dt> </dl> |



## See also

<dl> <dt>

[External Resource Control Codes](external-resource-control-codes.md)
</dt> <dt>

[**CLUSTER\_PROPERTY\_SYNTAX**](/previous-versions/windows/desktop/api/ClusAPI/ne-clusapi-cluster_property_syntax)
</dt> <dt>

[**ClusterResourceControl**](/previous-versions/windows/desktop/api/ClusAPI/nf-clusapi-clusterresourcecontrol)
</dt> <dt>

[**ResourceControl**](/previous-versions/windows/desktop/api/ResApi/nc-resapi-presource_control_routine)
</dt> </dl>

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