CLUSPROP_REQUIRED_DEPENDENCY union (clusapi.h)

Describes a resource that is a required dependency of another resource. This union is used as a value in the value list returned from a CLUSCTL_RESOURCE_GET_REQUIRED_DEPENDENCIES or CLUSCTL_RESOURCE_TYPE_GET_REQUIRED_DEPENDENCIES control code operation.

Syntax

typedef union CLUSPROP_REQUIRED_DEPENDENCY {
  CLUSPROP_VALUE          Value;
  CLUSPROP_RESOURCE_CLASS ResClass;
  CLUSPROP_SZ             ResTypeName;
} CLUSPROP_REQUIRED_DEPENDENCY, *PCLUSPROP_REQUIRED_DEPENDENCY;

Members

Value

CLUSPROP_VALUE structure describing whether the data in the structure is a resource class or resource type name.

ResClass

Resource class upon which a resource must depend. One of the following values are valid.

CLUS_RESCLASS_UNKNOWN (0)

A resource has a dependency on a resource of an unknown class.

CLUS_RESCLASS_STORAGE (1)

A resource has a dependency on a storage device, such as a Physical Disk resource.

CLUS_RESCLASS_NETWORK (2)

A resource has a dependency on a network device.

CLUS_RESCLASS_USER (32768)

A resource has a dependency on a resource belonging to a user-defined class. CLUS_RESCLASS_USER specifies the beginning of the range for user-defined resource classes.

ResTypeName

Resource type upon which a resource must depend, such as IP Address.

Remarks

The CLUSPROP_REQUIRED_DEPENDENCY structure describes mandatory dependencies. For example, a Print Spooler resource has required dependencies on a storage device and a Network Name resource. The first type of dependency is described using a resource class; storage device resources belong to the CLUS_RESCLASS_STORAGE resource class. The second type of dependency is described using a resource type name, such as "Network Name". Therefore, when an application calls ClusterResourceControl with the CLUSCTL_RESOURCE_GET_REQUIRED_DEPENDENCIES control code, a value list is returned with two entries: a CLUSPROP_REQUIRED_DEPENDENCY structure with the ResClass member set to CLUS_RESCLASS_STORAGE, and a second CLUSPROP_REQUIRED_DEPENDENCY structure with the ResTypeName member set to "Network Name".

Examples

See Creating Value Lists.

Requirements

See also

CLUSCTL_RESOURCE_GET_REQUIRED_DEPENDENCIES

CLUSCTL_RESOURCE_TYPE_GET_REQUIRED_DEPENDENCIES

CLUSPROP_SYNTAX

CLUSPROP_VALUE

ClusterResourceControl

Data structures