mirror of
https://github.com/reactos/reactos.git
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5eb25b5c24
svn path=/branches/audio-bringup/; revision=49478
310 lines
7.2 KiB
C
310 lines
7.2 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Kernel Streaming
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* FILE: drivers/ksfilter/swenum/swenum.c
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* PURPOSE: KS Allocator functions
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* PROGRAMMER: Johannes Anderwald
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*/
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#include "precomp.h"
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const GUID KSMEDIUMSETID_Standard = {0x4747B320L, 0x62CE, 0x11CF, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};
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NTSTATUS
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NTAPI
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SwDispatchPower(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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UNIMPLEMENTED;
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/* just complete the irp */
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Irp->IoStatus.Status = STATUS_SUCCESS;
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/* complete the irp */
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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SwDispatchPnp(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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NTSTATUS Status;
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BOOLEAN ChildDevice;
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PIO_STACK_LOCATION IoStack;
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PDEVICE_OBJECT PnpDeviceObject = NULL;
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/* check if the device object is a child device */
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Status = KsIsBusEnumChildDevice(DeviceObject, &ChildDevice);
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/* check for success */
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if (!NT_SUCCESS(Status))
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{
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/* failed */
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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/* let ks handle it */
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Status = KsServiceBusEnumPnpRequest(DeviceObject, Irp);
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if (!NT_SUCCESS(Status))
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{
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/* invalid request or not supported */
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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/* get bus enum pnp object */
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Status = KsGetBusEnumPnpDeviceObject(DeviceObject, &PnpDeviceObject);
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/* check for success */
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if (!NT_SUCCESS(Status))
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{
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/* failed to get pnp object */
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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/* sanity check */
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ASSERT(PnpDeviceObject);
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/* get current stack location */
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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if (IoStack->MinorFunction == IRP_MN_REMOVE_DEVICE)
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{
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/* delete the device */
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IoDeleteDevice(DeviceObject);
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}
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/* skip current location */
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IoSkipCurrentIrpStackLocation(Irp);
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/* call the pnp device object */
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return IoCallDriver(PnpDeviceObject, Irp);
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}
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NTSTATUS
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NTAPI
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SwDispatchSystemControl(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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NTSTATUS Status;
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BOOLEAN ChildDevice;
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PDEVICE_OBJECT PnpDeviceObject;
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/* check if the device object is a child device */
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Status = KsIsBusEnumChildDevice(DeviceObject, &ChildDevice);
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/* check for success */
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if (NT_SUCCESS(Status))
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{
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if (!ChildDevice)
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{
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/* bus devices dont support internal requests */
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_SUCCESS;
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}
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/* get bus enum pnp object */
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Status = KsGetBusEnumPnpDeviceObject(DeviceObject, &PnpDeviceObject);
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/* check for success */
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if (NT_SUCCESS(Status))
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{
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/* skip current location */
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IoSkipCurrentIrpStackLocation(Irp);
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/* call the pnp device object */
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return IoCallDriver(PnpDeviceObject, Irp);
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}
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}
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/* complete the request */
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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NTSTATUS
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NTAPI
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SwDispatchDeviceControl(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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PIO_STACK_LOCATION IoStack;
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NTSTATUS Status = STATUS_SUCCESS;
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/* get current stack location */
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_SWENUM_INSTALL_INTERFACE)
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{
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/* install interface */
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Status = KsInstallBusEnumInterface(Irp);
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}
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else if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_SWENUM_REMOVE_INTERFACE)
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{
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/* remove interface */
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Status = KsRemoveBusEnumInterface(Irp);
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}
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else if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_SWENUM_GET_BUS_ID)
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{
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/* get bus id */
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return KsGetBusEnumIdentifier(Irp);
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}
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/* store result */
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Irp->IoStatus.Status = Status;
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/* complete irp */
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return Status;
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}
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NTSTATUS
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NTAPI
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SwDispatchCreate(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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NTSTATUS Status;
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BOOLEAN ChildDevice;
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/* check if the device object is a child device */
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Status = KsIsBusEnumChildDevice(DeviceObject, &ChildDevice);
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/* check for success */
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if (NT_SUCCESS(Status))
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{
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if (ChildDevice)
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{
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/* child devices cant create devices */
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Irp->IoStatus.Status = STATUS_OBJECT_NAME_NOT_FOUND;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_OBJECT_NAME_NOT_FOUND;
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}
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/* perform the create request */
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Status = KsServiceBusEnumCreateRequest(DeviceObject, Irp);
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}
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/* check the irp is pending */
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if (Status != STATUS_PENDING)
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{
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/* irp is ok to complete */
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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return Status;
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}
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NTSTATUS
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NTAPI
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SwDispatchClose(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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/* just complete the irp */
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Irp->IoStatus.Status = STATUS_SUCCESS;
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/* complete the irp */
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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SwAddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT PhysicalDeviceObject)
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{
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NTSTATUS Status;
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PDEVICE_OBJECT FunctionalDeviceObject;
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/* create the device */
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Status = IoCreateDevice(DriverObject, sizeof(KSDEVICE_HEADER), NULL, FILE_DEVICE_BUS_EXTENDER, 0, FALSE, &FunctionalDeviceObject);
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if (!NT_SUCCESS(Status))
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{
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/* failed */
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return Status;
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}
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/* create the bus enum object */
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Status = KsCreateBusEnumObject(L"SW", FunctionalDeviceObject, PhysicalDeviceObject, NULL, &KSMEDIUMSETID_Standard, L"Devices");
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/* check for success */
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if (NT_SUCCESS(Status))
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{
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/* set device flags */
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FunctionalDeviceObject->Flags |= DO_POWER_PAGABLE;
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FunctionalDeviceObject->Flags &= ~ DO_DEVICE_INITIALIZING;
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}
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else
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{
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/* failed to create bus enum object */
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IoDeleteDevice(FunctionalDeviceObject);
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}
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/* done */
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return Status;
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}
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VOID
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NTAPI
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SwUnload(
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IN PDRIVER_OBJECT DriverObject)
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{
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/* nop */
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}
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NTSTATUS
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NTAPI
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DriverEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPathName)
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{
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/* setup add device routine */
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DriverObject->DriverExtension->AddDevice = SwAddDevice;
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/* setup unload routine */
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DriverObject->DriverUnload = SwUnload;
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/* misc irp handling routines */
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DriverObject->MajorFunction[IRP_MJ_CREATE] = SwDispatchCreate;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = SwDispatchClose;
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DriverObject->MajorFunction[IRP_MJ_PNP] = SwDispatchPnp;
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DriverObject->MajorFunction[IRP_MJ_POWER] = SwDispatchPower;
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = SwDispatchDeviceControl;
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DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = SwDispatchSystemControl;
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return STATUS_SUCCESS;
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}
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