WdfDriverRetrieveDriverDataDirectoryString function

Description

[Applies to UMDF only]

The WdfDriverRetrieveDriverDataDirectoryString method returns a path to a directory on disk in which the driver can store information. The files in that directory apply to a specific framework driver object.

Parameters

Driver [_In_]

A handle to the driver's framework driver object that the driver obtained from a previous call to WdfDriverCreate or WdfDeviceGetDriver.

String [_In_]

A handle to a framework string object that the driver obtained from a previous call to WdfStringCreate. The framework assigns the fully qualified path of the requested driver directory to the string object.

Return value

WdfDriverRetrieveDriverDataDirectoryString returns STATUS_SUCCESS if the operation succeeds. Otherwise, this method returns an appropriate NTSTATUS error code. For more information, see NTSTATUS Values.

Remarks

To achieve the same result, a KMDF driver should call IoGetDriverDirectory instead.

For more information about string objects, see Using String Objects.

Examples

The following code example shows how to call WdfDriverRetrieveDriverDataDirectoryString:

NTSTATUS status;
WDFSTRING string;

status = WdfStringCreate(
                         NULL,
                         WDF_NO_OBJECT_ATTRIBUTES,
                         &string
                         );
if (NT_SUCCESS(status)) {
    status = WdfDriverRetrieveDriverDataDirectoryString(
                         Driver,
                         string
                         );
    if (!NT_SUCCESS(status)) {
        return status;
    }
}

See also

IoGetDriverDirectory

_DRIVER_DIRECTORY_TYPE Enumeration