1 | /* $Id: memuserkernel-r0drv-freebsd.c 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - User & Kernel Memory, Ring-0 Driver, FreeBSD.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2009-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #include "the-freebsd-kernel.h"
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42 |
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43 | #include <iprt/mem.h>
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44 | #include <iprt/errcore.h>
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45 |
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46 |
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47 | RTR0DECL(int) RTR0MemUserCopyFrom(void *pvDst, RTR3PTR R3PtrSrc, size_t cb)
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48 | {
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49 | int rc = copyin((const void *)R3PtrSrc, pvDst, cb);
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50 | if (RT_LIKELY(rc == 0))
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51 | return VINF_SUCCESS;
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52 | return VERR_ACCESS_DENIED;
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53 | }
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54 |
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55 |
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56 | RTR0DECL(int) RTR0MemUserCopyTo(RTR3PTR R3PtrDst, void const *pvSrc, size_t cb)
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57 | {
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58 | int rc = copyout(pvSrc, (void *)R3PtrDst, cb);
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59 | if (RT_LIKELY(rc == 0))
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60 | return VINF_SUCCESS;
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61 | return VERR_ACCESS_DENIED;
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62 | }
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63 |
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64 |
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65 | RTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr)
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66 | {
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67 | return R3Ptr < VM_MAXUSER_ADDRESS;
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68 | }
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69 |
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70 |
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71 | RTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv)
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72 | {
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73 | return (uintptr_t)pv >= VM_MAXUSER_ADDRESS;
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74 | }
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75 |
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76 |
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77 | RTR0DECL(bool) RTR0MemAreKrnlAndUsrDifferent(void)
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78 | {
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79 | return true;
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80 | }
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81 |
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82 |
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83 | RTR0DECL(int) RTR0MemKernelCopyFrom(void *pvDst, void const *pvSrc, size_t cb)
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84 | {
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85 | return VERR_NOT_SUPPORTED;
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86 | }
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87 |
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88 |
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89 | RTR0DECL(int) RTR0MemKernelCopyTo(void *pvDst, void const *pvSrc, size_t cb)
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90 | {
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91 | return VERR_NOT_SUPPORTED;
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92 | }
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93 |
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