CLUS_RESOURCE_CLASS_INFO

The CLUS_RESOURCE_CLASS_INFO structure contains resource class data. The CLUS_RESOURCE_CLASS_INFO structure is defined in CLUSAPI.H.

typedef struct _CLUS_RESOURCE_CLASS_INFO {
    union {
        struct {
            union {
                DWORD                   dw;
                CLUSTER_RESOURCE_CLASS  rc;
            };
            DWORD           SubClass;
        };
        ULARGE_INTEGER      li;
    };
} CLUS_RESOURCE_CLASS_INFO, *PCLUS_RESOURCE_CLASS_INFO;
 

Members

dw

Resource class described as numeric data.

rc

Resource class described with one of the following values:

Resource class value	Description
CLUS_RESCLASS_UNKNOWN	Resource class is unknown.
CLUS_RESCLASS_STORAGE	Resource is a storage device, such as a physical disk.
CLUS_RESCLASS_USER	Resource classes beginning at this value are user-defined.

SubClass

Value that is specific to the class of resource and that further describes the resource class. The following value is valid for storage class resources such as Physical Disk resources:

CLUS_RESSUBCLASS_SHARED

Setting SubClass to CLUS_RESSUBCLASS_SHARED indicates that the resource manages a shared resource such as a disk on a shared SCSI bus.

li

Resource class and subclass described as a ULARGE_INTEGER value with a low DWORD and a high DWORD.

Remarks

A resource class identifies resources of similar capability. A resource DLL that defines its own resource class should provide a unique identifier for the class that is set to a value greater than CLUS_RESCLASS_USER. CLUS_RESCLASS_USER specifies the beginning for user-defined resource class identifiers. To obtain a resource class identifier from Microsoft that is guaranteed to be unique, resource DLL writers send mail to resclass@microsoft.com with the following information:

• Company name
• Contact name
• Contact phone number
• Contact e-mail

A CLUS_RESOURCE_CLASS_INFO structure is the data member of a CLUSPROP_RESOURCE_CLASS_INFO structure.

A CLUS_RESOURCE_CLASS_INFO structure can be returned by ClusterResourceControl when the dwControlCode parameter is set to CLUSCTL_RESOURCE_GET_CLASS_INFO and by ClusterResourceTypeControl when dwControlCode is set to CLUSCTL_RESOURCE_TYPE_GET_CLASS_INFO.

Because the CLUS_RESOURCE_CLASS_INFO structure describes data rather than a value, it does not include a value header.