CLUSCTL_NODE_GET_ID control code
Retrieves the unique cluster identifier for a node. Applications use this control code as a ClusterNodeControl parameter.
ClusterNodeControl(hNode, // node handle
hHostNode, // optional host node
CLUSCTL_NODE_GET_ID,// this control code
NULL, // input buffer (not used)
0, // input buffer size (not used)
lpOutBuffer, // output buffer: string
cbOutBufferSize, // allocated buffer size (bytes)
lpcbBytesReturned );// resulting data size (bytes)
Parameters
The following control code function parameter is specific to this control code. For complete parameter descriptions, see ClusterNodeControl.
-
lpOutBuffer
-
On a successful return, points to a null-terminated Unicode string containing the number that identifies the node.
Return value
ClusterNodeControl returns one of the following values.
-
ERROR_SUCCESS
-
0
The operation completed successfully. The lpcbBytesReturned parameter points to the actual size of the returned data.
-
ERROR_MORE_DATA
-
234 (0xEA)
More data is available. 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.
-
If any other value is returned, then the operation failed. The value of lpcbBytesReturned is unreliable.
Remarks
The number returned in lpOutBuffer resides in the cluster database under HKEY_LOCAL_MACHINE\Cluster\Nodes.
ClusAPI.h defines the 32 bits of CLUSCTL_NODE_GET_ID as follows (for more information, see Control Code Architecture).
| Component | Bit location | Value |
|---|---|---|
| Object code | 24 31 | CLUS_OBJECT_NODE (0x4) |
| 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_ID (0x39) |
| Access code | 0 1 | CLUS_ACCESS_READ (0x1) |
Requirements
| Minimum supported client |
None supported |
| Minimum supported server |
Windows Server 2008 Enterprise, Windows Server 2008 Datacenter |
| Header |
|