memuserkernel-r0drv-nt.cpp revision 086f30e697aef37b4dbc818a42ecde0533bcc1d8
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync/* $Id$ */
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync/** @file
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * IPRT - User & Kernel Memory, Ring-0 Driver, NT.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync */
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync/*
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * Copyright (C) 2009 Sun Microsystems, Inc.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync *
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * available from http://www.virtualbox.org. This file is free software;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * you can redistribute it and/or modify it under the terms of the GNU
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * General Public License (GPL) as published by the Free Software
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync *
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * The contents of this file may alternatively be used under the terms
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * of the Common Development and Distribution License Version 1.0
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * VirtualBox OSE distribution, in which case the provisions of the
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * CDDL are applicable instead of those of the GPL.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync *
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * You may elect to license modified versions of this file under the
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * terms and conditions of either the GPL or the CDDL or both.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync *
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync * additional information or have any questions.
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync */
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync/*******************************************************************************
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync* Header Files *
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync*******************************************************************************/
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#include "the-nt-kernel.h"
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#include <iprt/mem.h>
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#include <iprt/err.h>
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsyncRTR0DECL(int) RTR0MemUserCopyFrom(void *pvDst, RTR3PTR R3PtrSrc, size_t cb)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync{
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync __try
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync {
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync ProbeForRead(R3PtrSrc, cb, 1);
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync memcpy(pvDst, (void const *)R3PtrSrc, cb);
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync }
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync __except(EXCEPTION_EXECUTE_HANDLER)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync {
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return VERR_ACCESS_DENIED;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync }
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return VINF_SUCCESS;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync}
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsyncRTR0DECL(int) RTR0MemUserCopyTo(RTR3PTR R3PtrDst, void const *pvSrc, size_t cb)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync{
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync __try
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync {
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync ProbeForWrite(R3PtrDst, cb, 1);
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync memcpy((void *)R3PtrDst, pvSrc, cb);
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync }
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync __except(EXCEPTION_EXECUTE_HANDLER)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync {
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return VERR_ACCESS_DENIED;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync }
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return VINF_SUCCESS;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync}
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsyncRTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync{
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#ifdef TARGET_NT4
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync /* Play safe+wrong... it used to be a constant, but in w2k+ is a variable. */
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return R3Ptr < _2G;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#else
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return R3Ptr <= MM_HIGHEST_USER_ADDRESS;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#endif
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync}
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsyncRTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv)
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync{
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#ifdef TARGET_NT4
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync /* Play safe+wrong... it used to be a constant, but in w2k+ is a variable. */
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return (uintptr_t) >= _2G;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#else
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync return (uintptr_t)pv >= MM_SYSTEM_RANGE_START;
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync#endif
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync}
086f30e697aef37b4dbc818a42ecde0533bcc1d8vboxsync