Replacing HalGetBusData

来源：互联网发布：西门子200编程软件编辑：程序博客网时间：2024/06/06 14:20

NTSTATUSHtsReadWriteConfig( PDEVICE_OBJECT DeviceObject, ULONG WhichSpace, PVOID Buffer, ULONG Offset, ULONG Length, BOOLEAN ReadConfig){ ASSERT(DeviceObject); ASSERT(Buffer); ASSERT(Length); PIRP Irp = IoAllocateIrp(DeviceObject->StackSize, FALSE); if (!Irp) { return STATUS_INSUFFICIENT_RESOURCES; } Irp->IoStatus.Status = STATUS_NOT_SUPPORTED; KEVENT Event; KeInitializeEvent(&Event, NotificationEvent, FALSE); IoSetCompletionRoutine(Irp,HtsGenericCompletion, &Event, TRUE, TRUE, TRUE); PIO_STACK_LOCATION IoStack = IoGetNextIrpStackLocation(Irp); IoStack->MajorFunction= IRP_MJ_PNP; IoStack->MinorFunction= ReadConfig ? IRP_MN_READ_CONFIG : IRP_MN_WRITE_CONFIG; IoStack->Parameters.ReadWriteConfig.WhichSpace = WhichSpace; IoStack->Parameters.ReadWriteConfig.Buffer = Buffer; IoStack->Parameters.ReadWriteConfig.Offset = Offset; IoStack->Parameters.ReadWriteConfig.Length = Length; if (ReadConfig) { RtlZeroMemory(Buffer, Length); } NTSTATUS Status = IoCallDriver(DeviceObject, Irp); if (Status == STATUS_PENDING) { KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL); Status = Irp->IoStatus.Status; } IoFreeIrp(Irp); return Status;} NTSTATUSHtsGenericCompletion ( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PVOID Context ) { UNREFERENCED_PARAMETER (DeviceObject); KeSetEvent ((PKEVENT) Context, IO_NO_INCREMENT, FALSE); return STATUS_MORE_PROCESSING_REQUIRED; // Keep this IRP}

NTSTATUS

HtsReadWriteConfig(

PDEVICE_OBJECT DeviceObject,

ULONG WhichSpace,

PVOID Buffer,

ULONG Offset,

ULONG Length,

BOOLEAN ReadConfig)

{

ASSERT(DeviceObject);

ASSERT(Buffer);

ASSERT(Length);

PIRP Irp = IoAllocateIrp(DeviceObject->StackSize, FALSE);

if (!Irp) {

return STATUS_INSUFFICIENT_RESOURCES;

}

Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;

KEVENT Event;

KeInitializeEvent(&Event, NotificationEvent, FALSE);

IoSetCompletionRoutine(Irp,HtsGenericCompletion,

&Event, TRUE, TRUE, TRUE);

PIO_STACK_LOCATION IoStack = IoGetNextIrpStackLocation(Irp);

IoStack->MajorFunction= IRP_MJ_PNP;

IoStack->MinorFunction= ReadConfig ? IRP_MN_READ_CONFIG : IRP_MN_WRITE_CONFIG;

IoStack->Parameters.ReadWriteConfig.WhichSpace = WhichSpace;

IoStack->Parameters.ReadWriteConfig.Buffer = Buffer;

IoStack->Parameters.ReadWriteConfig.Offset = Offset;

IoStack->Parameters.ReadWriteConfig.Length = Length;

if (ReadConfig) {

RtlZeroMemory(Buffer, Length);

}

NTSTATUS Status = IoCallDriver(DeviceObject, Irp);

if (Status == STATUS_PENDING) {

KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);

Status = Irp->IoStatus.Status;

}

IoFreeIrp(Irp);

return Status;

}

NTSTATUS

HtsGenericCompletion (

IN PDEVICE_OBJECT DeviceObject,

IN PIRP Irp,

IN PVOID Context

)

{

UNREFERENCED_PARAMETER (DeviceObject);

KeSetEvent ((PKEVENT) Context, IO_NO_INCREMENT, FALSE);

return STATUS_MORE_PROCESSING_REQUIRED; // Keep this IRP

}