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/* $Id: VBoxUsbHook.h $ */
/** @file
* Driver Dispatch Table Hooking API impl
*/
/*
* Copyright (C) 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.
*/
#ifndef ___VBoxUsbHook_h___
#define ___VBoxUsbHook_h___
#include "VBoxUsbMon.h"
typedef struct VBOXUSBHOOK_ENTRY
{
LIST_ENTRY RequestList;
KSPIN_LOCK Lock;
BOOLEAN fIsInstalled;
PDRIVER_DISPATCH pfnOldHandler;
VBOXDRVTOOL_REF HookRef;
PDRIVER_OBJECT pDrvObj;
UCHAR iMjFunction;
PDRIVER_DISPATCH pfnHook;
} VBOXUSBHOOK_ENTRY, *PVBOXUSBHOOK_ENTRY;
typedef struct VBOXUSBHOOK_REQUEST
{
LIST_ENTRY ListEntry;
PVBOXUSBHOOK_ENTRY pHook;
IO_STACK_LOCATION OldLocation;
PDEVICE_OBJECT pDevObj;
PIRP pIrp;
BOOLEAN bCompletionStopped;
} VBOXUSBHOOK_REQUEST, *PVBOXUSBHOOK_REQUEST;
DECLINLINE(BOOLEAN) VBoxUsbHookRetain(PVBOXUSBHOOK_ENTRY pHook)
{
KIRQL Irql;
KeAcquireSpinLock(&pHook->Lock, &Irql);
if (!pHook->fIsInstalled)
{
KeReleaseSpinLock(&pHook->Lock, Irql);
return FALSE;
}
VBoxDrvToolRefRetain(&pHook->HookRef);
KeReleaseSpinLock(&pHook->Lock, Irql);
return TRUE;
}
DECLINLINE(VOID) VBoxUsbHookRelease(PVBOXUSBHOOK_ENTRY pHook)
{
VBoxDrvToolRefRelease(&pHook->HookRef);
}
VOID VBoxUsbHookInit(PVBOXUSBHOOK_ENTRY pHook, PDRIVER_OBJECT pDrvObj, UCHAR iMjFunction, PDRIVER_DISPATCH pfnHook);
NTSTATUS VBoxUsbHookInstall(PVBOXUSBHOOK_ENTRY pHook);
NTSTATUS VBoxUsbHookUninstall(PVBOXUSBHOOK_ENTRY pHook);
BOOLEAN VBoxUsbHookIsInstalled(PVBOXUSBHOOK_ENTRY pHook);
NTSTATUS VBoxUsbHookRequestPassDownHookCompletion(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PIO_COMPLETION_ROUTINE pfnCompletion, PVBOXUSBHOOK_REQUEST pRequest);
NTSTATUS VBoxUsbHookRequestPassDownHookSkip(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp);
NTSTATUS VBoxUsbHookRequestMoreProcessingRequired(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PVBOXUSBHOOK_REQUEST pRequest);
NTSTATUS VBoxUsbHookRequestComplete(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PVBOXUSBHOOK_REQUEST pRequest);
VOID VBoxUsbHookVerifyCompletion(PVBOXUSBHOOK_ENTRY pHook, PVBOXUSBHOOK_REQUEST pRequest, PIRP pIrp);
#endif /* #ifndef ___VBoxUsbHook_h___ */
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