IoWMISetSingleInstance - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// wdm.h
NTSTATUS IoWMISetSingleInstance(
[in] PVOID DataBlockObject,
[in] PUNICODE_STRING InstanceName,
[in] ULONG Version,
[in] ULONG ValueBufferSize,
[in] PVOID ValueBuffer
);
View the official Windows Driver Kit DDI referenceNo description available.
The IoWMISetSingleInstance routine sets the values for properties within the data block instance that matches the specified WMI class and instance name.
DataBlockObject [in]Pointer to a WMI data block object. The caller opens the data block object for the WMI class with the IoWMIOpenBlock routine. The object must be opened with the WMIGUID_SET access right.
InstanceName [in]Specifies the name of the instance of the data block. This value corresponds to the value of the InstanceName property for the block.
Version [in]Reserved for future use. Callers must set this parameter to zero.
ValueBufferSize [in]Specifies the size, in bytes, of the buffer passed in the ValueBuffer parameter.
ValueBuffer [in]Pointer to the buffer that contains the new values for the properties within the data block.
The routine returns an NTSTATUS code. Possible return values include:
| Return code | Description |
|---|---|
| STATUS_SUCCESS | The operation succeeded. The values of the WMI data block instance properties are updated to the contents of the buffer pointed to by the ValueBuffer parameter. |
| STATUS_WMI_GUID_NOT_FOUND | No drivers implement the WMI class. |
| STATUS_WMI_INSTANCE_NOT_FOUND | No driver implements an instance of the WMI class with InstanceName property equal to the value specified in the InstanceName parameter. |
| STATUS_WMI_READ_ONLY | All properties of the WMI class are read-only. |
| STATUS_WMI_SET_FAILURE | The driver that implements the WMI data block instance is unable to update the instance. |
IoWMISetSingleInstance determines which drivers might support the specified WMI class and instance name, and issues an IRP_MN_CHANGE_SINGLE_INSTANCE request to each such driver. The driver that exports the data block instance with matching InstanceName property updates its data block instance. Note that a data block might have both read-only and read/write properties. In this case, only the read/write properties will be updated and STATUS_SUCCESS is returned.
Drivers can also use the IoWMISetSingleItem routine to update a single property within the class instance.