115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
#include <ntddk.h>
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#include "devdesc.h"
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#ifdef PNP_IDENTIFY
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT,LinkDeviceToDescription)
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#endif
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NTSTATUS
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LinkDeviceToDescription(
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IN PUNICODE_STRING RegistryPath,
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IN PUNICODE_STRING DeviceName,
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IN INTERFACE_TYPE BusType,
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IN ULONG BusNumber,
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IN CONFIGURATION_TYPE ControllerType,
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IN ULONG ControllerNumber,
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IN CONFIGURATION_TYPE PeripheralType,
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IN ULONG PeripheralNumber
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)
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{
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//
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// This routine will create a volatile "Description" key under the
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// drivers service key. It will store values of the following form
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// in that key:
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//
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// \\Device\\PointerPortX:REG_BINARY:...
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// \\Device\\KeyboardPortX:REG_BINARY:...
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//
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// Where the binary data is six ULONG values (passed as parameters
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// to this routine) that describe the physical location of the device.
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//
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NTSTATUS Status = STATUS_SUCCESS;
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HANDLE ServiceKey = NULL, DescriptionKey = NULL;
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UNICODE_STRING RegString;
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OBJECT_ATTRIBUTES ObjectAttributes;
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ULONG disposition;
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HWDESC_INFO HwDescInfo;
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HwDescInfo.InterfaceType = BusType;
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HwDescInfo.InterfaceNumber = BusNumber;
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HwDescInfo.ControllerType = ControllerType;
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HwDescInfo.ControllerNumber = ControllerNumber;
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HwDescInfo.PeripheralType = PeripheralType;
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HwDescInfo.PeripheralNumber = PeripheralNumber;
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//
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// Open the service subkey
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//
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InitializeObjectAttributes(&ObjectAttributes,
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RegistryPath,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = ZwOpenKey(&ServiceKey,
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KEY_WRITE,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status)) {
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goto Clean0;
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}
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//
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// Create a volatile Description subkey under the service subkey
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//
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RtlInitUnicodeString(&RegString, L"Description");
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InitializeObjectAttributes(&ObjectAttributes,
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&RegString,
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OBJ_CASE_INSENSITIVE,
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ServiceKey,
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NULL);
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Status = ZwCreateKey(&DescriptionKey,
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KEY_ALL_ACCESS,
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&ObjectAttributes,
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0,
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(PUNICODE_STRING)NULL,
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REG_OPTION_VOLATILE,
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&disposition);
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if (!NT_SUCCESS(Status)) {
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goto Clean0;
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}
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//
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// The description data is stored under a REG_BINARY value (name
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// is the DeviceName passed in as a parameter)
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//
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Status = ZwSetValueKey(DescriptionKey,
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DeviceName,
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0,
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REG_BINARY,
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&HwDescInfo,
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sizeof(HwDescInfo));
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Clean0:
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if (DescriptionKey) {
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ZwClose(DescriptionKey);
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}
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if (ServiceKey) {
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ZwClose(ServiceKey);
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}
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return Status;
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}
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#endif
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