/* $Id$ */
/** @file
* VirtualBox Support Driver - IDC Client Lib, Windows Specific Code.
*/
/*
* Copyright (C) 2008-2011 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "../SUPR0IdcClientInternal.h"
#include <VBox/err.h>
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
/** NT Device name. */
#define DEVICE_NAME_NT L"\\Device\\VBoxDrv"
/**
* Internal I/O Control call worker.
*
* @returns VBox status code.
* @param pDeviceObject The device object to call.
* @param pFileObject The file object for the connection.
* @param uReq The request.
* @param pReq The request packet.
*/
static int supR0IdcNtCallInternal(PDEVICE_OBJECT pDeviceObject, PFILE_OBJECT pFileObject, uint32_t uReq, PSUPDRVIDCREQHDR pReq)
{
int rc;
IO_STATUS_BLOCK IoStatusBlock;
KEVENT Event;
PIRP pIrp;
NTSTATUS rcNt;
/*
* Build the request.
*/
KeInitializeEvent(&Event, NotificationEvent, FALSE);
pIrp = IoBuildDeviceIoControlRequest(uReq, /* IoControlCode */
pDeviceObject,
pReq, /* InputBuffer */
pReq->cb, /* InputBufferLength */
pReq, /* OutputBuffer */
pReq->cb, /* OutputBufferLength */
TRUE, /* InternalDeviceIoControl (=> IRP_MJ_INTERNAL_DEVICE_CONTROL) */
&Event, /* Event */
&IoStatusBlock); /* IoStatusBlock */
if (pIrp)
{
IoGetNextIrpStackLocation(pIrp)->FileObject = pFileObject;
/*
* Call the driver, wait for an async request to complete (should never happen).
*/
rcNt = IoCallDriver(pDeviceObject, pIrp);
if (rcNt == STATUS_PENDING)
{
rcNt = KeWaitForSingleObject(&Event, /* Object */
Executive, /* WaitReason */
KernelMode, /* WaitMode */
FALSE, /* Alertable */
NULL); /* TimeOut */
rcNt = IoStatusBlock.Status;
}
if (NT_SUCCESS(rcNt))
rc = pReq->rc;
else
rc = RTErrConvertFromNtStatus(rcNt);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
int VBOXCALL supR0IdcNativeOpen(PSUPDRVIDCHANDLE pHandle, PSUPDRVIDCREQCONNECT pReq)
{
PDEVICE_OBJECT pDeviceObject = NULL;
PFILE_OBJECT pFileObject = NULL;
UNICODE_STRING wszDeviceName;
NTSTATUS rcNt;
int rc;
/*
* Get the device object pointer.
*/
RtlInitUnicodeString(&wszDeviceName, DEVICE_NAME_NT);
rcNt = IoGetDeviceObjectPointer(&wszDeviceName, FILE_ALL_ACCESS, &pFileObject, &pDeviceObject);
if (NT_SUCCESS(rcNt))
{
/*
* Make the connection call.
*/
rc = supR0IdcNtCallInternal(pDeviceObject, pFileObject, SUPDRV_IDC_REQ_CONNECT, &pReq->Hdr);
if (RT_SUCCESS(rc))
{
pHandle->s.pDeviceObject = pDeviceObject;
pHandle->s.pFileObject = pFileObject;
return rc;
}
/* only the file object. */
ObDereferenceObject(pFileObject);
}
else
rc = RTErrConvertFromNtStatus(rcNt);
pHandle->s.pDeviceObject = NULL;
pHandle->s.pFileObject = NULL;
return rc;
}
int VBOXCALL supR0IdcNativeClose(PSUPDRVIDCHANDLE pHandle, PSUPDRVIDCREQHDR pReq)
{
PFILE_OBJECT pFileObject = pHandle->s.pFileObject;
int rc = supR0IdcNtCallInternal(pHandle->s.pDeviceObject, pFileObject, SUPDRV_IDC_REQ_DISCONNECT, pReq);
if (RT_SUCCESS(rc))
{
pHandle->s.pDeviceObject = NULL;
pHandle->s.pFileObject = NULL;
ObDereferenceObject(pFileObject);
}
return rc;
}
int VBOXCALL supR0IdcNativeCall(PSUPDRVIDCHANDLE pHandle, uint32_t uReq, PSUPDRVIDCREQHDR pReq)
{
return supR0IdcNtCallInternal(pHandle->s.pDeviceObject, pHandle->s.pFileObject, uReq, pReq);
}