| 1 | /* $Id: VBoxUsbHook.h 37042 2011-05-11 19:04:07Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Driver Dispatch Table Hooking API impl
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| 4 | */
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| 5 | /*
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| 6 | * Copyright (C) 2011 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | */
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| 16 |
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| 17 | #ifndef ___VBoxUsbHook_h___
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| 18 | #define ___VBoxUsbHook_h___
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| 19 |
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| 20 | #include "VBoxUsbMon.h"
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| 21 |
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| 22 | typedef struct VBOXUSBHOOK_ENTRY
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| 23 | {
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| 24 | LIST_ENTRY RequestList;
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| 25 | KSPIN_LOCK Lock;
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| 26 | BOOLEAN fIsInstalled;
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| 27 | PDRIVER_DISPATCH pfnOldHandler;
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| 28 | VBOXDRVTOOL_REF HookRef;
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| 29 | PDRIVER_OBJECT pDrvObj;
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| 30 | UCHAR iMjFunction;
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| 31 | PDRIVER_DISPATCH pfnHook;
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| 32 | } VBOXUSBHOOK_ENTRY, *PVBOXUSBHOOK_ENTRY;
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| 33 |
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| 34 | typedef struct VBOXUSBHOOK_REQUEST
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| 35 | {
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| 36 | LIST_ENTRY ListEntry;
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| 37 | PVBOXUSBHOOK_ENTRY pHook;
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| 38 | IO_STACK_LOCATION OldLocation;
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| 39 | PDEVICE_OBJECT pDevObj;
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| 40 | PIRP pIrp;
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| 41 | BOOLEAN bCompletionStopped;
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| 42 | } VBOXUSBHOOK_REQUEST, *PVBOXUSBHOOK_REQUEST;
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| 43 |
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| 44 | DECLINLINE(BOOLEAN) VBoxUsbHookRetain(PVBOXUSBHOOK_ENTRY pHook)
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| 45 | {
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| 46 | KIRQL Irql;
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| 47 | KeAcquireSpinLock(&pHook->Lock, &Irql);
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| 48 | if (!pHook->fIsInstalled)
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| 49 | {
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| 50 | KeReleaseSpinLock(&pHook->Lock, Irql);
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| 51 | return FALSE;
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| 52 | }
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| 53 |
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| 54 | VBoxDrvToolRefRetain(&pHook->HookRef);
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| 55 | KeReleaseSpinLock(&pHook->Lock, Irql);
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| 56 | return TRUE;
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| 57 | }
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| 58 |
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| 59 | DECLINLINE(VOID) VBoxUsbHookRelease(PVBOXUSBHOOK_ENTRY pHook)
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| 60 | {
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| 61 | VBoxDrvToolRefRelease(&pHook->HookRef);
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| 62 | }
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| 63 |
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| 64 | VOID VBoxUsbHookInit(PVBOXUSBHOOK_ENTRY pHook, PDRIVER_OBJECT pDrvObj, UCHAR iMjFunction, PDRIVER_DISPATCH pfnHook);
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| 65 | NTSTATUS VBoxUsbHookInstall(PVBOXUSBHOOK_ENTRY pHook);
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| 66 | NTSTATUS VBoxUsbHookUninstall(PVBOXUSBHOOK_ENTRY pHook);
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| 67 | BOOLEAN VBoxUsbHookIsInstalled(PVBOXUSBHOOK_ENTRY pHook);
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| 68 | NTSTATUS VBoxUsbHookRequestPassDownHookCompletion(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PIO_COMPLETION_ROUTINE pfnCompletion, PVBOXUSBHOOK_REQUEST pRequest);
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| 69 | NTSTATUS VBoxUsbHookRequestPassDownHookSkip(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 70 | NTSTATUS VBoxUsbHookRequestMoreProcessingRequired(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PVBOXUSBHOOK_REQUEST pRequest);
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| 71 | NTSTATUS VBoxUsbHookRequestComplete(PVBOXUSBHOOK_ENTRY pHook, PDEVICE_OBJECT pDevObj, PIRP pIrp, PVBOXUSBHOOK_REQUEST pRequest);
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| 72 | VOID VBoxUsbHookVerifyCompletion(PVBOXUSBHOOK_ENTRY pHook, PVBOXUSBHOOK_REQUEST pRequest, PIRP pIrp);
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| 73 |
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| 74 | #endif /* #ifndef ___VBoxUsbHook_h___ */
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