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Fixed direct reference to a driver object.

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svn path=/trunk/; revision=3080
This commit is contained in:
Eric Kohl 2002-06-14 14:24:28 +00:00
parent 01b92c6de5
commit 260116f684
1 changed files with 31 additions and 13 deletions
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44
reactos/subsys/win32k/eng/device.c
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@ -10,29 +10,47 @@
#include <ddk/ntddk.h>
DWORD STDCALL EngDeviceIoControl(
HANDLE hDevice,
DWORD dwIoControlCode,
LPVOID lpInBuffer,
DWORD nInBufferSize,
LPVOID lpOutBuffer,
DWORD nOutBufferSize,
DWORD *lpBytesReturned)
#define NDEBUG
#include <debug.h>
DWORD STDCALL
EngDeviceIoControl(HANDLE hDevice,
DWORD dwIoControlCode,
LPVOID lpInBuffer,
DWORD nInBufferSize,
LPVOID lpOutBuffer,
DWORD nOutBufferSize,
DWORD *lpBytesReturned)
{
PIRP Irp;
NTSTATUS Status;
KEVENT Event;
IO_STATUS_BLOCK Iosb;
PDRIVER_OBJECT DriverObject;
PFILE_OBJECT FileObject;
DriverObject = hDevice;
DPRINT("EngDeviceIoControl() called\n");
KeInitializeEvent(&Event, SynchronizationEvent, FALSE);
Irp = IoBuildDeviceIoControlRequest(dwIoControlCode, DriverObject->DeviceObject, lpInBuffer, nInBufferSize,
lpOutBuffer, nOutBufferSize, FALSE, &Event, &Iosb);
Status = ObReferenceObjectByHandle(hDevice,
FILE_READ_DATA | FILE_WRITE_DATA,
IoFileObjectType,
KernelMode,
(PVOID *)&FileObject,
NULL);
if (!NT_SUCCESS(Status))
{
return(Status);
}
Status = IoCallDriver(DriverObject->DeviceObject, Irp);
Irp = IoBuildDeviceIoControlRequest(dwIoControlCode,
FileObject->DeviceObject,
lpInBuffer,
nInBufferSize,
lpOutBuffer,
nOutBufferSize, FALSE, &Event, &Iosb);
Status = IoCallDriver(FileObject->DeviceObject, Irp);
if (Status == STATUS_PENDING)
{