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/usr/src/virtualbox-guest-4.1.42/vboxsf/SysHlp.h is in virtualbox-guest-dkms 4.1.42-dfsg-1+deb7u1.

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/* $Revision: 76576 $ */
/** @file
 * VBoxGuestLibR0 - System dependent helpers internal header.
 */

/*
 * Copyright (C) 2006-2007 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.
 */

#ifndef __VBoxGuestLib_SysHlp_h
#define __VBoxGuestLib_SysHlp_h

#ifdef RT_OS_WINDOWS
# undef PAGE_SIZE
# undef PAGE_SHIFT
# if (_MSC_VER >= 1400) && !defined(VBOX_WITH_PATCHED_DDK)
#  include <iprt/asm.h>
#  define _InterlockedExchange           _InterlockedExchange_StupidDDKVsCompilerCrap
#  define _InterlockedExchangeAdd        _InterlockedExchangeAdd_StupidDDKVsCompilerCrap
#  define _InterlockedCompareExchange    _InterlockedCompareExchange_StupidDDKVsCompilerCrap
#  define _InterlockedAddLargeStatistic  _InterlockedAddLargeStatistic_StupidDDKVsCompilerCrap
#  pragma warning(disable : 4163)
RT_C_DECLS_BEGIN
#  include <ntddk.h>
RT_C_DECLS_END
#  pragma warning(default : 4163)
#  undef  _InterlockedExchange
#  undef  _InterlockedExchangeAdd
#  undef  _InterlockedCompareExchange
#  undef  _InterlockedAddLargeStatistic
# else
RT_C_DECLS_BEGIN
#  include <ntddk.h>
RT_C_DECLS_END
# endif
/* XP DDK #defines ExFreePool to ExFreePoolWithTag. The latter does not exist on NT4, so...
 * The same for ExAllocatePool.
 */
#undef ExAllocatePool
#undef ExFreePool
#endif

typedef struct _VBGLDRIVER
{
#ifdef RT_OS_WINDOWS
    PDEVICE_OBJECT pDeviceObject;
    PFILE_OBJECT pFileObject;
#elif defined (RT_OS_OS2)
    uint32_t u32Session; /**< just for sanity checking. */
#else /* PORTME */
    void *pvOpaque;
#endif
} VBGLDRIVER;

int vbglLockLinear (void **ppvCtx, void *pv, uint32_t u32Size, bool fWriteAccess, uint32_t fFlags);
void vbglUnlockLinear (void *pvCtx, void *pv, uint32_t u32Size);


#ifndef VBGL_VBOXGUEST

/**
 * Open VBoxGuest driver.
 *
 * @param pDriver      Pointer to the driver structure.
 *
 * @return VBox error code
 */
int vbglDriverOpen (VBGLDRIVER *pDriver);

/**
 * Call VBoxGuest driver.
 *
 * @param pDriver      Pointer to the driver structure.
 * @param u32Function  Function code.
 * @param pvData       Pointer to supplied in/out data buffer.
 * @param cbData       Size of data buffer.
 *
 * @return VBox error code
 */
int vbglDriverIOCtl (VBGLDRIVER *pDriver, uint32_t u32Function, void *pvData, uint32_t cbData);

/**
 * Close VBoxGuest driver.
 *
 * @param pDriver      Pointer to the driver structure.
 *
 * @return VBox error code
 */
void vbglDriverClose (VBGLDRIVER *pDriver);

#endif

#endif /* !__VBoxGuestLib_SysHlp_h */