VirtualBox

source: vbox/trunk/src/VBox/Runtime/r0drv/os2/memuserkernel-r0drv-os2.cpp@ 48462

Last change on this file since 48462 was 44529, checked in by vboxsync, 12 years ago

header (C) fixes

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.7 KB
Line 
1/* $Id: memuserkernel-r0drv-os2.cpp 44529 2013-02-04 15:54:15Z vboxsync $ */
2/** @file
3 * IPRT - User & Kernel Memory, Ring-0 Driver, OS/2.
4 */
5
6/*
7 * Copyright (C) 2009-2012 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*******************************************************************************
29* Header Files *
30*******************************************************************************/
31#include "the-os2-kernel.h"
32
33#include <iprt/mem.h>
34#include <iprt/err.h>
35
36
37RTR0DECL(int) RTR0MemUserCopyFrom(void *pvDst, RTR3PTR R3PtrSrc, size_t cb)
38{
39 int rc = KernCopyIn(pvDst, (void *)R3PtrSrc, cb);
40 if (RT_LIKELY(rc == 0))
41 return VINF_SUCCESS;
42 return VERR_ACCESS_DENIED;
43}
44
45
46RTR0DECL(int) RTR0MemUserCopyTo(RTR3PTR R3PtrDst, void const *pvSrc, size_t cb)
47{
48 int rc = KernCopyOut((void *)R3PtrDst, (void *)pvSrc, cb);
49 if (RT_LIKELY(rc == 0))
50 return VINF_SUCCESS;
51 return VERR_ACCESS_DENIED;
52}
53
54
55RTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr)
56{
57 /** @todo this is all wrong, but I'm too lazy to figure out how to make it
58 * correct. Checking the user DS limit would work if it wasn't maxed
59 * out by SDD, VPC or someone. The version (+SMP) would help on older
60 * OS/2 versions where the limit is 512MB. */
61 return R3Ptr < UINT32_C(0xc0000000); /* 3GB */
62}
63
64
65RTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv)
66{
67 /** @todo this is all wrong, see RTR0MemUserIsValidAddr. */
68 return (uintptr_t)pv >= UINT32_C(0x20000000); /* 512MB */
69}
70
71
72RTR0DECL(bool) RTR0MemAreKrnlAndUsrDifferent(void)
73{
74 /** @todo this is all wrong, see RTR0MemUserIsValidAddr. */
75 return false;
76}
77
78
79RTR0DECL(int) RTR0MemKernelCopyFrom(void *pvDst, void const *pvSrc, size_t cb)
80{
81 return VERR_NOT_SUPPORTED;
82}
83
84
85RTR0DECL(int) RTR0MemKernelCopyTo(void *pvDst, void const *pvSrc, size_t cb)
86{
87 return VERR_NOT_SUPPORTED;
88}
89
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