[3542] | 1 | /* $Id: SUPDrv-win.cpp 104428 2024-04-25 10:07:44Z vboxsync $ */
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[1] | 2 | /** @file
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[10662] | 3 | * VBoxDrv - The VirtualBox Support Driver - Windows NT specifics.
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[1] | 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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[1] | 8 | *
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[96407] | 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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[5999] | 11 | *
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[96407] | 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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[5999] | 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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[96407] | 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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[5999] | 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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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[1] | 35 | */
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| 36 |
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[57358] | 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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[77816] | 41 | #ifndef IPRT_NT_MAP_TO_ZW
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| 42 | # define IPRT_NT_MAP_TO_ZW
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| 43 | #endif
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[10662] | 44 | #define LOG_GROUP LOG_GROUP_SUP_DRV
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[10263] | 45 | #include "../SUPDrvInternal.h"
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[1] | 46 | #include <excpt.h>
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[25331] | 47 | #include <ntimage.h>
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| 48 |
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[1] | 49 | #include <iprt/assert.h>
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[51770] | 50 | #include <iprt/avl.h>
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| 51 | #include <iprt/ctype.h>
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[25300] | 52 | #include <iprt/initterm.h>
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| 53 | #include <iprt/mem.h>
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[390] | 54 | #include <iprt/process.h>
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[13496] | 55 | #include <iprt/power.h>
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[52735] | 56 | #include <iprt/rand.h>
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[53002] | 57 | #include <iprt/semaphore.h>
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[51770] | 58 | #include <iprt/spinlock.h>
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[25300] | 59 | #include <iprt/string.h>
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[76415] | 60 | #include <iprt/utf16.h>
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[70917] | 61 | #include <iprt/x86.h>
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[10662] | 62 | #include <VBox/log.h>
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[51770] | 63 | #include <VBox/err.h>
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[1] | 64 |
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[49635] | 65 | #include <iprt/asm-amd64-x86.h>
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[1] | 66 |
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[51770] | 67 | #ifdef VBOX_WITH_HARDENING
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| 68 | # include "SUPHardenedVerify-win.h"
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| 69 | #endif
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[49635] | 70 |
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[51770] | 71 |
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[57358] | 72 | /*********************************************************************************************************************************
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| 73 | * Defined Constants And Macros *
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| 74 | *********************************************************************************************************************************/
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[1] | 75 | /** The support service name. */
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| 76 | #define SERVICE_NAME "VBoxDrv"
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[2653] | 77 | /** The Pool tag (VBox). */
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| 78 | #define SUPDRV_NT_POOL_TAG 'xoBV'
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[1] | 79 |
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[44188] | 80 | /** NT device name for user access. */
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[53002] | 81 | #define DEVICE_NAME_NT_USR L"\\Device\\VBoxDrvU"
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[51770] | 82 | #ifdef VBOX_WITH_HARDENING
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| 83 | /** Macro for checking for deflecting calls to the stub device. */
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| 84 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_DEV(a_pDevObj, a_pIrp) \
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[53002] | 85 | do { if ((a_pDevObj) == g_pDevObjStub) \
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| 86 | return supdrvNtCompleteRequest(STATUS_ACCESS_DENIED, a_pIrp); \
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| 87 | } while (0)
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| 88 | /** Macro for checking for deflecting calls to the stub and error info
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| 89 | * devices. */
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| 90 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(a_pDevObj, a_pIrp) \
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| 91 | do { if ((a_pDevObj) == g_pDevObjStub || (a_pDevObj) == g_pDevObjErrorInfo) \
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| 92 | return supdrvNtCompleteRequest(STATUS_ACCESS_DENIED, a_pIrp); \
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| 93 | } while (0)
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[51770] | 94 | #else
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[53002] | 95 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_DEV(a_pDevObj, a_pIrp) do {} while (0)
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| 96 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(a_pDevObj, a_pIrp) do {} while (0)
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[51770] | 97 | #endif
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| 98 |
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[51229] | 99 | /** Enables the fast I/O control code path. */
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[51744] | 100 | #define VBOXDRV_WITH_FAST_IO
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[44188] | 101 |
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[91559] | 102 | /** Enables generating UID from NT SIDs so the GMM can share free memory
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| 103 | * among VMs running as the same user. */
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[92203] | 104 | #define VBOXDRV_WITH_SID_TO_UID_MAPPING
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[91559] | 105 |
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[76054] | 106 | /* Missing if we're compiling against older WDKs. */
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| 107 | #ifndef NonPagedPoolNx
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| 108 | # define NonPagedPoolNx ((POOL_TYPE)512)
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| 109 | #endif
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[51229] | 110 |
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[76054] | 111 |
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[57358] | 112 | /*********************************************************************************************************************************
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| 113 | * Structures and Typedefs *
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| 114 | *********************************************************************************************************************************/
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[91559] | 115 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
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[44188] | 116 | /**
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[91559] | 117 | * SID to User ID mapping.
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| 118 | *
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| 119 | * This is used to generate a RTUID value for a NT security identifier.
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| 120 | * Normally, the UID is the hash of the SID string, but due to collisions it may
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| 121 | * differ. See g_NtUserIdHashTree and g_NtUserIdUidTree.
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| 122 | */
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| 123 | typedef struct SUPDRVNTUSERID
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| 124 | {
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| 125 | /** Hash tree node, key: RTStrHash1 of szSid. */
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| 126 | AVLLU32NODECORE HashCore;
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| 127 | /** UID three node, key: The UID. */
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| 128 | AVLU32NODECORE UidCore;
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| 129 | /** Reference counter. */
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| 130 | uint32_t volatile cRefs;
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| 131 | /** The length of the SID string. */
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| 132 | uint16_t cchSid;
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| 133 | /** The SID string for the user. */
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| 134 | char szSid[RT_FLEXIBLE_ARRAY];
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| 135 | } SUPDRVNTUSERID;
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| 136 | /** Pointer to a SID to UID mapping. */
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| 137 | typedef SUPDRVNTUSERID *PSUPDRVNTUSERID;
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| 138 | #endif
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| 139 |
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| 140 | /**
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[44188] | 141 | * Device extension used by VBoxDrvU.
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| 142 | */
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| 143 | typedef struct SUPDRVDEVEXTUSR
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| 144 | {
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| 145 | /** Global cookie (same location as in SUPDRVDEVEXT, different value). */
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| 146 | uint32_t u32Cookie;
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| 147 | /** Pointer to the main driver extension. */
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| 148 | PSUPDRVDEVEXT pMainDrvExt;
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| 149 | } SUPDRVDEVEXTUSR;
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| 150 | AssertCompileMembersAtSameOffset(SUPDRVDEVEXT, u32Cookie, SUPDRVDEVEXTUSR, u32Cookie);
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| 151 | /** Pointer to the VBoxDrvU device extension. */
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| 152 | typedef SUPDRVDEVEXTUSR *PSUPDRVDEVEXTUSR;
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| 153 | /** Value of SUPDRVDEVEXTUSR::u32Cookie. */
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| 154 | #define SUPDRVDEVEXTUSR_COOKIE UINT32_C(0x12345678)
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[1] | 155 |
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[44188] | 156 | /** Get the main device extension. */
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| 157 | #define SUPDRVNT_GET_DEVEXT(pDevObj) \
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| 158 | ( pDevObj != g_pDevObjUsr \
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| 159 | ? (PSUPDRVDEVEXT)pDevObj->DeviceExtension \
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| 160 | : ((PSUPDRVDEVEXTUSR)pDevObj->DeviceExtension)->pMainDrvExt )
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| 161 |
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[51770] | 162 | #ifdef VBOX_WITH_HARDENING
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[44188] | 163 |
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[51770] | 164 | /**
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[53002] | 165 | * Device extension used by VBoxDrvStub.
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[51770] | 166 | */
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| 167 | typedef struct SUPDRVDEVEXTSTUB
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| 168 | {
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| 169 | /** Common header. */
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| 170 | SUPDRVDEVEXTUSR Common;
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| 171 | } SUPDRVDEVEXTSTUB;
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[53002] | 172 | /** Pointer to the VBoxDrvStub device extension. */
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[51770] | 173 | typedef SUPDRVDEVEXTSTUB *PSUPDRVDEVEXTSTUB;
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| 174 | /** Value of SUPDRVDEVEXTSTUB::Common.u32Cookie. */
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| 175 | #define SUPDRVDEVEXTSTUB_COOKIE UINT32_C(0x90abcdef)
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| 176 |
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| 177 |
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| 178 | /**
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[53002] | 179 | * Device extension used by VBoxDrvErrorInfo.
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| 180 | */
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| 181 | typedef struct SUPDRVDEVEXTERRORINFO
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| 182 | {
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| 183 | /** Common header. */
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| 184 | SUPDRVDEVEXTUSR Common;
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| 185 | } SUPDRVDEVEXTERRORINFO;
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| 186 | /** Pointer to the VBoxDrvErrorInfo device extension. */
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| 187 | typedef SUPDRVDEVEXTERRORINFO *PSUPDRVDEVEXTERRORINFO;
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| 188 | /** Value of SUPDRVDEVEXTERRORINFO::Common.u32Cookie. */
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| 189 | #define SUPDRVDEVEXTERRORINFO_COOKIE UINT32_C(0xBadC0ca0)
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| 190 |
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| 191 | /**
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| 192 | * Error info for a failed VBoxDrv or VBoxDrvStub open attempt.
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| 193 | */
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| 194 | typedef struct SUPDRVNTERRORINFO
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| 195 | {
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| 196 | /** The list entry (in g_ErrorInfoHead). */
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| 197 | RTLISTNODE ListEntry;
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| 198 | /** The ID of the process this error info belongs to. */
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| 199 | HANDLE hProcessId;
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| 200 | /** The ID of the thread owning this info. */
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| 201 | HANDLE hThreadId;
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| 202 | /** Milliseconds createion timestamp (for cleaning up). */
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| 203 | uint64_t uCreatedMsTs;
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| 204 | /** Number of bytes of valid info. */
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| 205 | uint32_t cchErrorInfo;
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| 206 | /** The error info. */
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[57501] | 207 | char szErrorInfo[16384 - sizeof(RTLISTNODE) - sizeof(HANDLE)*2 - sizeof(uint64_t) - sizeof(uint32_t) - 0x20];
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[53002] | 208 | } SUPDRVNTERRORINFO;
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| 209 | /** Pointer to error info. */
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| 210 | typedef SUPDRVNTERRORINFO *PSUPDRVNTERRORINFO;
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| 211 |
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| 212 |
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| 213 | /**
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[51770] | 214 | * The kind of process we're protecting.
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| 215 | */
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| 216 | typedef enum SUPDRVNTPROTECTKIND
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| 217 | {
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| 218 | kSupDrvNtProtectKind_Invalid = 0,
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| 219 |
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| 220 | /** Stub process protection while performing process verification.
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| 221 | * Next: StubSpawning (or free) */
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| 222 | kSupDrvNtProtectKind_StubUnverified,
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| 223 | /** Stub process protection before it creates the VM process.
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| 224 | * Next: StubParent, StubDead. */
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| 225 | kSupDrvNtProtectKind_StubSpawning,
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| 226 | /** Stub process protection while having a VM process as child.
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| 227 | * Next: StubDead */
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| 228 | kSupDrvNtProtectKind_StubParent,
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| 229 | /** Dead stub process. */
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| 230 | kSupDrvNtProtectKind_StubDead,
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| 231 |
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| 232 | /** Potential VM process.
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| 233 | * Next: VmProcessConfirmed, VmProcessDead. */
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| 234 | kSupDrvNtProtectKind_VmProcessUnconfirmed,
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| 235 | /** Confirmed VM process.
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| 236 | * Next: VmProcessDead. */
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| 237 | kSupDrvNtProtectKind_VmProcessConfirmed,
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| 238 | /** Dead VM process. */
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| 239 | kSupDrvNtProtectKind_VmProcessDead,
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| 240 |
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| 241 | /** End of valid protection kinds. */
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| 242 | kSupDrvNtProtectKind_End
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| 243 | } SUPDRVNTPROTECTKIND;
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| 244 |
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| 245 | /**
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| 246 | * A NT process protection structure.
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| 247 | */
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| 248 | typedef struct SUPDRVNTPROTECT
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| 249 | {
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| 250 | /** The AVL node core structure. The process ID is the pid. */
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| 251 | AVLPVNODECORE AvlCore;
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| 252 | /** Magic value (SUPDRVNTPROTECT_MAGIC). */
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| 253 | uint32_t volatile u32Magic;
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| 254 | /** Reference counter. */
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| 255 | uint32_t volatile cRefs;
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| 256 | /** The kind of process we're protecting. */
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| 257 | SUPDRVNTPROTECTKIND volatile enmProcessKind;
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[57303] | 258 | /** Whether this structure is in the tree. */
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| 259 | bool fInTree : 1;
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[52905] | 260 | /** 7,: Hack to allow the supid themes service duplicate handle privileges to
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| 261 | * our process. */
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| 262 | bool fThemesFirstProcessCreateHandle : 1;
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[51770] | 263 | /** Vista, 7 & 8: Hack to allow more rights to the handle returned by
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| 264 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 265 | bool fFirstProcessCreateHandle : 1;
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| 266 | /** Vista, 7 & 8: Hack to allow more rights to the handle returned by
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| 267 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 268 | bool fFirstThreadCreateHandle : 1;
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| 269 | /** 8.1: Hack to allow more rights to the handle returned by
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| 270 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 271 | bool fCsrssFirstProcessCreateHandle : 1;
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[52905] | 272 | /** Vista, 7 & 8: Hack to allow more rights to the handle duplicated by CSRSS
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| 273 | * during process creation. Only applicable to VmProcessUnconfirmed. On
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| 274 | * 32-bit systems we allow two as ZoneAlarm's system call hooks has been
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| 275 | * observed to do some seemingly unnecessary duplication work. */
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| 276 | int32_t volatile cCsrssFirstProcessDuplicateHandle;
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[51770] | 277 |
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| 278 | /** The parent PID for VM processes, otherwise NULL. */
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| 279 | HANDLE hParentPid;
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[52962] | 280 | /** The TID of the thread opening VBoxDrv or VBoxDrvStub, NULL if not opened. */
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| 281 | HANDLE hOpenTid;
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[51770] | 282 | /** The PID of the CSRSS process associated with this process. */
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| 283 | HANDLE hCsrssPid;
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| 284 | /** Pointer to the CSRSS process structure (referenced). */
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| 285 | PEPROCESS pCsrssProcess;
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| 286 | /** State dependent data. */
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| 287 | union
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| 288 | {
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| 289 | /** A stub process in the StubParent state will keep a reference to a child
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| 290 | * while it's in the VmProcessUnconfirmed state so that it can be cleaned up
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| 291 | * correctly if things doesn't work out. */
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| 292 | struct SUPDRVNTPROTECT *pChild;
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| 293 | /** A process in the VmProcessUnconfirmed state will keep a weak
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| 294 | * reference to the parent's protection structure so it can clean up the pChild
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[52962] | 295 | * reference the parent has to it. */
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[51770] | 296 | struct SUPDRVNTPROTECT *pParent;
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| 297 | } u;
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| 298 | } SUPDRVNTPROTECT;
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| 299 | /** Pointer to a NT process protection record. */
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| 300 | typedef SUPDRVNTPROTECT *PSUPDRVNTPROTECT;
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| 301 | /** The SUPDRVNTPROTECT::u32Magic value (Robert A. Heinlein). */
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| 302 | # define SUPDRVNTPROTECT_MAGIC UINT32_C(0x19070707)
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| 303 | /** The SUPDRVNTPROTECT::u32Magic value of a dead structure. */
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| 304 | # define SUPDRVNTPROTECT_MAGIC_DEAD UINT32_C(0x19880508)
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| 305 |
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[52735] | 306 | /** Pointer to ObGetObjectType. */
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| 307 | typedef POBJECT_TYPE (NTAPI *PFNOBGETOBJECTTYPE)(PVOID);
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[51770] | 308 | /** Pointer to ObRegisterCallbacks. */
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| 309 | typedef NTSTATUS (NTAPI *PFNOBREGISTERCALLBACKS)(POB_CALLBACK_REGISTRATION, PVOID *);
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| 310 | /** Pointer to ObUnregisterCallbacks. */
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| 311 | typedef VOID (NTAPI *PFNOBUNREGISTERCALLBACKS)(PVOID);
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| 312 | /** Pointer to PsSetCreateProcessNotifyRoutineEx. */
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| 313 | typedef NTSTATUS (NTAPI *PFNPSSETCREATEPROCESSNOTIFYROUTINEEX)(PCREATE_PROCESS_NOTIFY_ROUTINE_EX, BOOLEAN);
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| 314 | /** Pointer to PsReferenceProcessFilePointer. */
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| 315 | typedef NTSTATUS (NTAPI *PFNPSREFERENCEPROCESSFILEPOINTER)(PEPROCESS, PFILE_OBJECT *);
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| 316 | /** Pointer to PsIsProtectedProcessLight. */
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| 317 | typedef BOOLEAN (NTAPI *PFNPSISPROTECTEDPROCESSLIGHT)(PEPROCESS);
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[52735] | 318 | /** Pointer to ZwAlpcCreatePort. */
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| 319 | typedef NTSTATUS (NTAPI *PFNZWALPCCREATEPORT)(PHANDLE, POBJECT_ATTRIBUTES, struct _ALPC_PORT_ATTRIBUTES *);
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[51770] | 320 |
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| 321 | #endif /* VBOX_WITH_HARDENINIG */
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| 322 |
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| 323 |
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[57358] | 324 | /*********************************************************************************************************************************
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| 325 | * Internal Functions *
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| 326 | *********************************************************************************************************************************/
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[4800] | 327 | static void _stdcall VBoxDrvNtUnload(PDRIVER_OBJECT pDrvObj);
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| 328 | static NTSTATUS _stdcall VBoxDrvNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[38075] | 329 | static NTSTATUS _stdcall VBoxDrvNtCleanup(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[4800] | 330 | static NTSTATUS _stdcall VBoxDrvNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[51229] | 331 | #ifdef VBOXDRV_WITH_FAST_IO
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| 332 | static BOOLEAN _stdcall VBoxDrvNtFastIoDeviceControl(PFILE_OBJECT pFileObj, BOOLEAN fWait, PVOID pvInput, ULONG cbInput,
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| 333 | PVOID pvOutput, ULONG cbOutput, ULONG uCmd,
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| 334 | PIO_STATUS_BLOCK pIoStatus, PDEVICE_OBJECT pDevObj);
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| 335 | #endif
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[4800] | 336 | static NTSTATUS _stdcall VBoxDrvNtDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 337 | static int VBoxDrvNtDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack);
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[10263] | 338 | static NTSTATUS _stdcall VBoxDrvNtInternalDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[13495] | 339 | static VOID _stdcall VBoxPowerDispatchCallback(PVOID pCallbackContext, PVOID pArgument1, PVOID pArgument2);
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[53002] | 340 | static NTSTATUS _stdcall VBoxDrvNtRead(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[4800] | 341 | static NTSTATUS _stdcall VBoxDrvNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 342 | static NTSTATUS VBoxDrvNtErr2NtStatus(int rc);
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[51770] | 343 | #ifdef VBOX_WITH_HARDENING
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| 344 | static NTSTATUS supdrvNtProtectInit(void);
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| 345 | static void supdrvNtProtectTerm(void);
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| 346 | static int supdrvNtProtectCreate(PSUPDRVNTPROTECT *ppNtProtect, HANDLE hPid,
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| 347 | SUPDRVNTPROTECTKIND enmProcessKind, bool fLink);
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| 348 | static void supdrvNtProtectRelease(PSUPDRVNTPROTECT pNtProtect);
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| 349 | static PSUPDRVNTPROTECT supdrvNtProtectLookup(HANDLE hPid);
|
---|
| 350 | static int supdrvNtProtectFindAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect);
|
---|
| 351 | static int supdrvNtProtectVerifyProcess(PSUPDRVNTPROTECT pNtProtect);
|
---|
[1] | 352 |
|
---|
[51770] | 353 | static bool supdrvNtIsDebuggerAttached(void);
|
---|
[53002] | 354 | static void supdrvNtErrorInfoCleanupProcess(HANDLE hProcessId);
|
---|
| 355 |
|
---|
[51770] | 356 | #endif
|
---|
[1] | 357 |
|
---|
[51770] | 358 |
|
---|
[57358] | 359 | /*********************************************************************************************************************************
|
---|
| 360 | * Exported Functions *
|
---|
| 361 | *********************************************************************************************************************************/
|
---|
[20374] | 362 | RT_C_DECLS_BEGIN
|
---|
[62666] | 363 | NTSTATUS _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath);
|
---|
[20374] | 364 | RT_C_DECLS_END
|
---|
[1] | 365 |
|
---|
| 366 |
|
---|
[57358] | 367 | /*********************************************************************************************************************************
|
---|
| 368 | * Global Variables *
|
---|
| 369 | *********************************************************************************************************************************/
|
---|
[76054] | 370 | /** The non-paged pool type to use, NonPagedPool or NonPagedPoolNx. */
|
---|
| 371 | static POOL_TYPE g_enmNonPagedPoolType = NonPagedPool;
|
---|
[44188] | 372 | /** Pointer to the system device instance. */
|
---|
| 373 | static PDEVICE_OBJECT g_pDevObjSys = NULL;
|
---|
| 374 | /** Pointer to the user device instance. */
|
---|
| 375 | static PDEVICE_OBJECT g_pDevObjUsr = NULL;
|
---|
[51229] | 376 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
| 377 | /** Fast I/O dispatch table. */
|
---|
| 378 | static FAST_IO_DISPATCH const g_VBoxDrvFastIoDispatch =
|
---|
| 379 | {
|
---|
| 380 | /* .SizeOfFastIoDispatch = */ sizeof(g_VBoxDrvFastIoDispatch),
|
---|
| 381 | /* .FastIoCheckIfPossible = */ NULL,
|
---|
| 382 | /* .FastIoRead = */ NULL,
|
---|
| 383 | /* .FastIoWrite = */ NULL,
|
---|
| 384 | /* .FastIoQueryBasicInfo = */ NULL,
|
---|
| 385 | /* .FastIoQueryStandardInfo = */ NULL,
|
---|
| 386 | /* .FastIoLock = */ NULL,
|
---|
| 387 | /* .FastIoUnlockSingle = */ NULL,
|
---|
| 388 | /* .FastIoUnlockAll = */ NULL,
|
---|
| 389 | /* .FastIoUnlockAllByKey = */ NULL,
|
---|
| 390 | /* .FastIoDeviceControl = */ VBoxDrvNtFastIoDeviceControl,
|
---|
| 391 | /* .AcquireFileForNtCreateSection = */ NULL,
|
---|
| 392 | /* .ReleaseFileForNtCreateSection = */ NULL,
|
---|
| 393 | /* .FastIoDetachDevice = */ NULL,
|
---|
| 394 | /* .FastIoQueryNetworkOpenInfo = */ NULL,
|
---|
| 395 | /* .AcquireForModWrite = */ NULL,
|
---|
| 396 | /* .MdlRead = */ NULL,
|
---|
| 397 | /* .MdlReadComplete = */ NULL,
|
---|
| 398 | /* .PrepareMdlWrite = */ NULL,
|
---|
| 399 | /* .MdlWriteComplete = */ NULL,
|
---|
| 400 | /* .FastIoReadCompressed = */ NULL,
|
---|
| 401 | /* .FastIoWriteCompressed = */ NULL,
|
---|
| 402 | /* .MdlReadCompleteCompressed = */ NULL,
|
---|
| 403 | /* .MdlWriteCompleteCompressed = */ NULL,
|
---|
| 404 | /* .FastIoQueryOpen = */ NULL,
|
---|
| 405 | /* .ReleaseForModWrite = */ NULL,
|
---|
| 406 | /* .AcquireForCcFlush = */ NULL,
|
---|
| 407 | /* .ReleaseForCcFlush = */ NULL,
|
---|
| 408 | };
|
---|
| 409 | #endif /* VBOXDRV_WITH_FAST_IO */
|
---|
[44188] | 410 |
|
---|
[64255] | 411 | /** Default ZERO value. */
|
---|
| 412 | static ULONG g_fOptDefaultZero = 0;
|
---|
| 413 | /** Registry values.
|
---|
| 414 | * We wrap these in a struct to ensure they are followed by a little zero
|
---|
| 415 | * padding in order to limit the chance of trouble on unpatched systems. */
|
---|
| 416 | struct
|
---|
| 417 | {
|
---|
| 418 | /** The ForceAsync registry value. */
|
---|
| 419 | ULONG fOptForceAsyncTsc;
|
---|
| 420 | /** Padding. */
|
---|
| 421 | uint64_t au64Padding[2];
|
---|
| 422 | } g_Options = { FALSE, 0, 0 };
|
---|
| 423 | /** Registry query table for RtlQueryRegistryValues. */
|
---|
| 424 | static RTL_QUERY_REGISTRY_TABLE g_aRegValues[] =
|
---|
| 425 | {
|
---|
| 426 | {
|
---|
| 427 | /* .QueryRoutine = */ NULL,
|
---|
| 428 | /* .Flags = */ RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_TYPECHECK,
|
---|
[99828] | 429 | /* .Name = */ (PWSTR)L"ForceAsyncTsc",
|
---|
[64255] | 430 | /* .EntryContext = */ &g_Options.fOptForceAsyncTsc,
|
---|
| 431 | /* .DefaultType = */ (REG_DWORD << RTL_QUERY_REGISTRY_TYPECHECK_SHIFT) | REG_DWORD,
|
---|
| 432 | /* .DefaultData = */ &g_fOptDefaultZero,
|
---|
| 433 | /* .DefaultLength = */ sizeof(g_fOptDefaultZero),
|
---|
| 434 | },
|
---|
| 435 | { NULL, 0, NULL, NULL, 0, NULL, 0 } /* terminator entry. */
|
---|
| 436 | };
|
---|
| 437 |
|
---|
| 438 | /** Pointer to KeQueryMaximumGroupCount. */
|
---|
| 439 | static PFNKEQUERYMAXIMUMGROUPCOUNT g_pfnKeQueryMaximumGroupCount = NULL;
|
---|
| 440 | /** Pointer to KeGetProcessorIndexFromNumber. */
|
---|
| 441 | static PFNKEGETPROCESSORINDEXFROMNUMBER g_pfnKeGetProcessorIndexFromNumber = NULL;
|
---|
| 442 | /** Pointer to KeGetProcessorNumberFromIndex. */
|
---|
| 443 | static PFNKEGETPROCESSORNUMBERFROMINDEX g_pfnKeGetProcessorNumberFromIndex = NULL;
|
---|
| 444 |
|
---|
[91559] | 445 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 446 | /** Spinlock protecting g_NtUserIdHashTree and g_NtUserIdUidTree. */
|
---|
| 447 | static RTSPINLOCK g_hNtUserIdLock = NIL_RTSPINLOCK;
|
---|
| 448 | /** AVL tree of SUPDRVNTUSERID structures by hash value. */
|
---|
| 449 | static PAVLLU32NODECORE g_NtUserIdHashTree = NULL;
|
---|
| 450 | /** AVL tree of SUPDRVNTUSERID structures by UID. */
|
---|
| 451 | static PAVLU32NODECORE g_NtUserIdUidTree = NULL;
|
---|
| 452 | #endif
|
---|
| 453 |
|
---|
[51770] | 454 | #ifdef VBOX_WITH_HARDENING
|
---|
| 455 | /** Pointer to the stub device instance. */
|
---|
| 456 | static PDEVICE_OBJECT g_pDevObjStub = NULL;
|
---|
| 457 | /** Spinlock protecting g_NtProtectTree as well as the releasing of protection
|
---|
| 458 | * structures. */
|
---|
| 459 | static RTSPINLOCK g_hNtProtectLock = NIL_RTSPINLOCK;
|
---|
| 460 | /** AVL tree of SUPDRVNTPROTECT structures. */
|
---|
| 461 | static AVLPVTREE g_NtProtectTree = NULL;
|
---|
| 462 | /** Cookie returned by ObRegisterCallbacks for the callbacks. */
|
---|
| 463 | static PVOID g_pvObCallbacksCookie = NULL;
|
---|
| 464 | /** Combined windows NT version number. See SUP_MAKE_NT_VER_COMBINED. */
|
---|
| 465 | uint32_t g_uNtVerCombined = 0;
|
---|
[52735] | 466 | /** Pointer to ObGetObjectType if available.. */
|
---|
| 467 | static PFNOBGETOBJECTTYPE g_pfnObGetObjectType = NULL;
|
---|
[51770] | 468 | /** Pointer to ObRegisterCallbacks if available.. */
|
---|
| 469 | static PFNOBREGISTERCALLBACKS g_pfnObRegisterCallbacks = NULL;
|
---|
| 470 | /** Pointer to ObUnregisterCallbacks if available.. */
|
---|
| 471 | static PFNOBUNREGISTERCALLBACKS g_pfnObUnRegisterCallbacks = NULL;
|
---|
| 472 | /** Pointer to PsSetCreateProcessNotifyRoutineEx if available.. */
|
---|
| 473 | static PFNPSSETCREATEPROCESSNOTIFYROUTINEEX g_pfnPsSetCreateProcessNotifyRoutineEx = NULL;
|
---|
| 474 | /** Pointer to PsReferenceProcessFilePointer if available. */
|
---|
| 475 | static PFNPSREFERENCEPROCESSFILEPOINTER g_pfnPsReferenceProcessFilePointer = NULL;
|
---|
| 476 | /** Pointer to PsIsProtectedProcessLight. */
|
---|
| 477 | static PFNPSISPROTECTEDPROCESSLIGHT g_pfnPsIsProtectedProcessLight = NULL;
|
---|
[52735] | 478 | /** Pointer to ZwAlpcCreatePort. */
|
---|
| 479 | static PFNZWALPCCREATEPORT g_pfnZwAlpcCreatePort = NULL;
|
---|
[44188] | 480 |
|
---|
[51770] | 481 | # ifdef RT_ARCH_AMD64
|
---|
| 482 | extern "C" {
|
---|
| 483 | /** Pointer to KiServiceLinkage (used to fake missing ZwQueryVirtualMemory on
|
---|
| 484 | * XP64 / W2K3-64). */
|
---|
| 485 | PFNRT g_pfnKiServiceLinkage = NULL;
|
---|
| 486 | /** Pointer to KiServiceInternal (used to fake missing ZwQueryVirtualMemory on
|
---|
| 487 | * XP64 / W2K3-64) */
|
---|
| 488 | PFNRT g_pfnKiServiceInternal = NULL;
|
---|
| 489 | }
|
---|
| 490 | # endif
|
---|
[52735] | 491 | /** The primary ALPC port object type. (LpcPortObjectType at init time.) */
|
---|
| 492 | static POBJECT_TYPE g_pAlpcPortObjectType1 = NULL;
|
---|
| 493 | /** The secondary ALPC port object type. (Sampled at runtime.) */
|
---|
| 494 | static POBJECT_TYPE volatile g_pAlpcPortObjectType2 = NULL;
|
---|
| 495 |
|
---|
[53002] | 496 | /** Pointer to the error information device instance. */
|
---|
| 497 | static PDEVICE_OBJECT g_pDevObjErrorInfo = NULL;
|
---|
| 498 | /** Fast mutex semaphore protecting the error info list. */
|
---|
| 499 | static RTSEMMUTEX g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
| 500 | /** Head of the error info (SUPDRVNTERRORINFO). */
|
---|
| 501 | static RTLISTANCHOR g_ErrorInfoHead;
|
---|
| 502 |
|
---|
[51770] | 503 | #endif
|
---|
| 504 |
|
---|
| 505 |
|
---|
[1] | 506 | /**
|
---|
[44188] | 507 | * Takes care of creating the devices and their symbolic links.
|
---|
| 508 | *
|
---|
| 509 | * @returns NT status code.
|
---|
| 510 | * @param pDrvObj Pointer to driver object.
|
---|
| 511 | */
|
---|
| 512 | static NTSTATUS vboxdrvNtCreateDevices(PDRIVER_OBJECT pDrvObj)
|
---|
| 513 | {
|
---|
| 514 | /*
|
---|
| 515 | * System device.
|
---|
| 516 | */
|
---|
| 517 | UNICODE_STRING DevName;
|
---|
[53002] | 518 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_SYS);
|
---|
[44188] | 519 | NTSTATUS rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXT), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjSys);
|
---|
| 520 | if (NT_SUCCESS(rcNt))
|
---|
| 521 | {
|
---|
[51947] | 522 | /*
|
---|
| 523 | * User device.
|
---|
| 524 | */
|
---|
[53002] | 525 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_USR);
|
---|
[51947] | 526 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTUSR), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjUsr);
|
---|
[44188] | 527 | if (NT_SUCCESS(rcNt))
|
---|
| 528 | {
|
---|
[51947] | 529 | PSUPDRVDEVEXTUSR pDevExtUsr = (PSUPDRVDEVEXTUSR)g_pDevObjUsr->DeviceExtension;
|
---|
| 530 | pDevExtUsr->pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 531 | pDevExtUsr->u32Cookie = SUPDRVDEVEXTUSR_COOKIE;
|
---|
| 532 |
|
---|
| 533 | #ifdef VBOX_WITH_HARDENING
|
---|
[44188] | 534 | /*
|
---|
[51947] | 535 | * Hardened stub device.
|
---|
[44188] | 536 | */
|
---|
[53002] | 537 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_STUB);
|
---|
[51947] | 538 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTSTUB), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjStub);
|
---|
[44188] | 539 | if (NT_SUCCESS(rcNt))
|
---|
| 540 | {
|
---|
| 541 | if (NT_SUCCESS(rcNt))
|
---|
| 542 | {
|
---|
[51947] | 543 | PSUPDRVDEVEXTSTUB pDevExtStub = (PSUPDRVDEVEXTSTUB)g_pDevObjStub->DeviceExtension;
|
---|
| 544 | pDevExtStub->Common.pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 545 | pDevExtStub->Common.u32Cookie = SUPDRVDEVEXTSTUB_COOKIE;
|
---|
[53002] | 546 |
|
---|
| 547 | /*
|
---|
| 548 | * Hardened error information device.
|
---|
| 549 | */
|
---|
| 550 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_ERROR_INFO);
|
---|
| 551 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTERRORINFO), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE,
|
---|
| 552 | &g_pDevObjErrorInfo);
|
---|
| 553 | if (NT_SUCCESS(rcNt))
|
---|
| 554 | {
|
---|
| 555 | g_pDevObjErrorInfo->Flags |= DO_BUFFERED_IO;
|
---|
| 556 |
|
---|
| 557 | if (NT_SUCCESS(rcNt))
|
---|
| 558 | {
|
---|
[84394] | 559 | PSUPDRVDEVEXTERRORINFO pDevExtErrInf = (PSUPDRVDEVEXTERRORINFO)g_pDevObjStub->DeviceExtension;
|
---|
| 560 | pDevExtErrInf->Common.pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 561 | pDevExtErrInf->Common.u32Cookie = SUPDRVDEVEXTERRORINFO_COOKIE;
|
---|
[53002] | 562 |
|
---|
[51770] | 563 | #endif
|
---|
[53002] | 564 | /* Done. */
|
---|
| 565 | return rcNt;
|
---|
| 566 | #ifdef VBOX_WITH_HARDENING
|
---|
| 567 | }
|
---|
[51770] | 568 |
|
---|
[53002] | 569 | /* Bail out. */
|
---|
| 570 | IoDeleteDevice(g_pDevObjErrorInfo);
|
---|
| 571 | g_pDevObjErrorInfo = NULL;
|
---|
| 572 | }
|
---|
[51947] | 573 | }
|
---|
[51770] | 574 |
|
---|
[51947] | 575 | /* Bail out. */
|
---|
| 576 | IoDeleteDevice(g_pDevObjStub);
|
---|
[44188] | 577 | g_pDevObjUsr = NULL;
|
---|
| 578 | }
|
---|
[51947] | 579 | IoDeleteDevice(g_pDevObjUsr);
|
---|
| 580 | g_pDevObjUsr = NULL;
|
---|
[62666] | 581 | #endif
|
---|
[44188] | 582 | }
|
---|
| 583 | IoDeleteDevice(g_pDevObjSys);
|
---|
| 584 | g_pDevObjSys = NULL;
|
---|
| 585 | }
|
---|
| 586 | return rcNt;
|
---|
| 587 | }
|
---|
| 588 |
|
---|
| 589 | /**
|
---|
| 590 | * Destroys the devices and links created by vboxdrvNtCreateDevices.
|
---|
| 591 | */
|
---|
| 592 | static void vboxdrvNtDestroyDevices(void)
|
---|
| 593 | {
|
---|
[51770] | 594 | if (g_pDevObjUsr)
|
---|
| 595 | {
|
---|
| 596 | PSUPDRVDEVEXTUSR pDevExtUsr = (PSUPDRVDEVEXTUSR)g_pDevObjUsr->DeviceExtension;
|
---|
| 597 | pDevExtUsr->pMainDrvExt = NULL;
|
---|
| 598 | }
|
---|
| 599 | #ifdef VBOX_WITH_HARDENING
|
---|
| 600 | if (g_pDevObjStub)
|
---|
| 601 | {
|
---|
| 602 | PSUPDRVDEVEXTSTUB pDevExtStub = (PSUPDRVDEVEXTSTUB)g_pDevObjStub->DeviceExtension;
|
---|
| 603 | pDevExtStub->Common.pMainDrvExt = NULL;
|
---|
| 604 | }
|
---|
[53002] | 605 | if (g_pDevObjErrorInfo)
|
---|
| 606 | {
|
---|
| 607 | PSUPDRVDEVEXTERRORINFO pDevExtErrorInfo = (PSUPDRVDEVEXTERRORINFO)g_pDevObjStub->DeviceExtension;
|
---|
| 608 | pDevExtErrorInfo->Common.pMainDrvExt = NULL;
|
---|
| 609 | }
|
---|
[51770] | 610 | #endif
|
---|
| 611 |
|
---|
| 612 | #ifdef VBOX_WITH_HARDENING
|
---|
[53002] | 613 | IoDeleteDevice(g_pDevObjErrorInfo);
|
---|
| 614 | g_pDevObjErrorInfo = NULL;
|
---|
[51770] | 615 | IoDeleteDevice(g_pDevObjStub);
|
---|
| 616 | g_pDevObjStub = NULL;
|
---|
| 617 | #endif
|
---|
[44188] | 618 | IoDeleteDevice(g_pDevObjUsr);
|
---|
| 619 | g_pDevObjUsr = NULL;
|
---|
| 620 | IoDeleteDevice(g_pDevObjSys);
|
---|
| 621 | g_pDevObjSys = NULL;
|
---|
| 622 | }
|
---|
| 623 |
|
---|
| 624 |
|
---|
| 625 | /**
|
---|
[1] | 626 | * Driver entry point.
|
---|
| 627 | *
|
---|
[1355] | 628 | * @returns appropriate status code.
|
---|
[1] | 629 | * @param pDrvObj Pointer to driver object.
|
---|
| 630 | * @param pRegPath Registry base path.
|
---|
| 631 | */
|
---|
[62666] | 632 | NTSTATUS _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)
|
---|
[1] | 633 | {
|
---|
[62666] | 634 | RT_NOREF1(pRegPath);
|
---|
| 635 |
|
---|
[1] | 636 | /*
|
---|
[51229] | 637 | * Sanity checks.
|
---|
| 638 | */
|
---|
| 639 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
| 640 | if (g_VBoxDrvFastIoDispatch.FastIoDeviceControl != VBoxDrvNtFastIoDeviceControl)
|
---|
| 641 | {
|
---|
| 642 | DbgPrint("VBoxDrv: FastIoDeviceControl=%p instead of %p\n",
|
---|
| 643 | g_VBoxDrvFastIoDispatch.FastIoDeviceControl, VBoxDrvNtFastIoDeviceControl);
|
---|
| 644 | return STATUS_INTERNAL_ERROR;
|
---|
| 645 | }
|
---|
| 646 | #endif
|
---|
| 647 |
|
---|
| 648 | /*
|
---|
[76054] | 649 | * Figure out if we can use NonPagedPoolNx or not.
|
---|
| 650 | */
|
---|
| 651 | ULONG ulMajorVersion, ulMinorVersion, ulBuildNumber;
|
---|
| 652 | PsGetVersion(&ulMajorVersion, &ulMinorVersion, &ulBuildNumber, NULL);
|
---|
| 653 | if (ulMajorVersion > 6 || (ulMajorVersion == 6 && ulMinorVersion >= 2)) /* >= 6.2 (W8)*/
|
---|
| 654 | g_enmNonPagedPoolType = NonPagedPoolNx;
|
---|
| 655 |
|
---|
| 656 | /*
|
---|
[64255] | 657 | * Query options first so any overflows on unpatched machines will do less
|
---|
| 658 | * harm (see MS11-011 / 2393802 / 2011-03-18).
|
---|
| 659 | *
|
---|
| 660 | * Unfortunately, pRegPath isn't documented as zero terminated, even if it
|
---|
| 661 | * quite likely always is, so we have to make a copy here.
|
---|
| 662 | */
|
---|
| 663 | NTSTATUS rcNt;
|
---|
[76054] | 664 | PWSTR pwszCopy = (PWSTR)ExAllocatePoolWithTag(g_enmNonPagedPoolType, pRegPath->Length + sizeof(WCHAR), 'VBox');
|
---|
[64255] | 665 | if (pwszCopy)
|
---|
| 666 | {
|
---|
| 667 | memcpy(pwszCopy, pRegPath->Buffer, pRegPath->Length);
|
---|
| 668 | pwszCopy[pRegPath->Length / sizeof(WCHAR)] = '\0';
|
---|
| 669 | rcNt = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE | RTL_REGISTRY_OPTIONAL, pwszCopy,
|
---|
| 670 | g_aRegValues, NULL /*pvContext*/, NULL /*pvEnv*/);
|
---|
| 671 | ExFreePoolWithTag(pwszCopy, 'VBox');
|
---|
| 672 | /* Probably safe to ignore rcNt here. */
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | /*
|
---|
| 676 | * Resolve methods we want but isn't available everywhere.
|
---|
| 677 | */
|
---|
| 678 | UNICODE_STRING RoutineName;
|
---|
| 679 | RtlInitUnicodeString(&RoutineName, L"KeQueryMaximumGroupCount");
|
---|
| 680 | g_pfnKeQueryMaximumGroupCount = (PFNKEQUERYMAXIMUMGROUPCOUNT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 681 |
|
---|
| 682 | RtlInitUnicodeString(&RoutineName, L"KeGetProcessorIndexFromNumber");
|
---|
| 683 | g_pfnKeGetProcessorIndexFromNumber = (PFNKEGETPROCESSORINDEXFROMNUMBER)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 684 |
|
---|
| 685 | RtlInitUnicodeString(&RoutineName, L"KeGetProcessorNumberFromIndex");
|
---|
| 686 | g_pfnKeGetProcessorNumberFromIndex = (PFNKEGETPROCESSORNUMBERFROMINDEX)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 687 |
|
---|
| 688 | Assert( (g_pfnKeGetProcessorNumberFromIndex != NULL) == (g_pfnKeGetProcessorIndexFromNumber != NULL)
|
---|
| 689 | && (g_pfnKeGetProcessorNumberFromIndex != NULL) == (g_pfnKeQueryMaximumGroupCount != NULL)); /* all or nothing. */
|
---|
| 690 |
|
---|
| 691 | /*
|
---|
[51770] | 692 | * Initialize the runtime (IPRT).
|
---|
[1] | 693 | */
|
---|
[51770] | 694 | int vrc = RTR0Init(0);
|
---|
| 695 | if (RT_SUCCESS(vrc))
|
---|
[1] | 696 | {
|
---|
[51770] | 697 | Log(("VBoxDrv::DriverEntry\n"));
|
---|
| 698 |
|
---|
| 699 | #ifdef VBOX_WITH_HARDENING
|
---|
| 700 | /*
|
---|
| 701 | * Initialize process protection.
|
---|
| 702 | */
|
---|
| 703 | rcNt = supdrvNtProtectInit();
|
---|
| 704 | if (NT_SUCCESS(rcNt))
|
---|
| 705 | #endif
|
---|
[1] | 706 | {
|
---|
[91559] | 707 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
[44188] | 708 | /*
|
---|
[91559] | 709 | * Create the spinlock for the SID -> UID mappings.
|
---|
[44188] | 710 | */
|
---|
[91559] | 711 | vrc = RTSpinlockCreate(&g_hNtUserIdLock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "NtUserId");
|
---|
| 712 | if (RT_SUCCESS(vrc))
|
---|
| 713 | #endif
|
---|
[1] | 714 | {
|
---|
| 715 | /*
|
---|
[91559] | 716 | * Create device.
|
---|
| 717 | * (That means creating a device object and a symbolic link so the DOS
|
---|
| 718 | * subsystems (OS/2, win32, ++) can access the device.)
|
---|
[1] | 719 | */
|
---|
[91559] | 720 | rcNt = vboxdrvNtCreateDevices(pDrvObj);
|
---|
| 721 | if (NT_SUCCESS(rcNt))
|
---|
[51770] | 722 | {
|
---|
| 723 | /*
|
---|
[91559] | 724 | * Initialize the device extension.
|
---|
[51770] | 725 | */
|
---|
[91559] | 726 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 727 | memset(pDevExt, 0, sizeof(*pDevExt));
|
---|
[13495] | 728 |
|
---|
[91559] | 729 | vrc = supdrvInitDevExt(pDevExt, sizeof(SUPDRVSESSION));
|
---|
| 730 | if (!vrc)
|
---|
| 731 | {
|
---|
| 732 | /*
|
---|
| 733 | * Setup the driver entry points in pDrvObj.
|
---|
| 734 | */
|
---|
| 735 | pDrvObj->DriverUnload = VBoxDrvNtUnload;
|
---|
| 736 | pDrvObj->MajorFunction[IRP_MJ_CREATE] = VBoxDrvNtCreate;
|
---|
| 737 | pDrvObj->MajorFunction[IRP_MJ_CLEANUP] = VBoxDrvNtCleanup;
|
---|
| 738 | pDrvObj->MajorFunction[IRP_MJ_CLOSE] = VBoxDrvNtClose;
|
---|
| 739 | pDrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = VBoxDrvNtDeviceControl;
|
---|
| 740 | pDrvObj->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = VBoxDrvNtInternalDeviceControl;
|
---|
| 741 | pDrvObj->MajorFunction[IRP_MJ_READ] = VBoxDrvNtRead;
|
---|
| 742 | pDrvObj->MajorFunction[IRP_MJ_WRITE] = VBoxDrvNtNotSupportedStub;
|
---|
| 743 |
|
---|
[51229] | 744 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
[91559] | 745 | /* Fast I/O to speed up guest execution roundtrips. */
|
---|
| 746 | pDrvObj->FastIoDispatch = (PFAST_IO_DISPATCH)&g_VBoxDrvFastIoDispatch;
|
---|
[51229] | 747 | #endif
|
---|
| 748 |
|
---|
[91559] | 749 | /*
|
---|
| 750 | * Register ourselves for power state changes. We don't
|
---|
| 751 | * currently care if this fails.
|
---|
| 752 | */
|
---|
| 753 | UNICODE_STRING CallbackName;
|
---|
| 754 | RtlInitUnicodeString(&CallbackName, L"\\Callback\\PowerState");
|
---|
[13495] | 755 |
|
---|
[91559] | 756 | OBJECT_ATTRIBUTES Attr;
|
---|
| 757 | InitializeObjectAttributes(&Attr, &CallbackName, OBJ_CASE_INSENSITIVE, NULL, NULL);
|
---|
[13495] | 758 |
|
---|
[91559] | 759 | rcNt = ExCreateCallback(&pDevExt->pObjPowerCallback, &Attr, TRUE, TRUE);
|
---|
| 760 | if (rcNt == STATUS_SUCCESS)
|
---|
| 761 | pDevExt->hPowerCallback = ExRegisterCallback(pDevExt->pObjPowerCallback,
|
---|
| 762 | VBoxPowerDispatchCallback,
|
---|
| 763 | g_pDevObjSys);
|
---|
[13495] | 764 |
|
---|
[91559] | 765 | /*
|
---|
| 766 | * Done! Returning success!
|
---|
| 767 | */
|
---|
| 768 | Log(("VBoxDrv::DriverEntry returning STATUS_SUCCESS\n"));
|
---|
[104428] | 769 | DbgPrint("VBoxSup::DriverEntry: returning STATUS_SUCCESS\n"); /* temp for @bugref{10657} */
|
---|
[91559] | 770 | return STATUS_SUCCESS;
|
---|
| 771 | }
|
---|
| 772 |
|
---|
[51770] | 773 | /*
|
---|
[91559] | 774 | * Failed. Clean up.
|
---|
[51770] | 775 | */
|
---|
[104428] | 776 | DbgPrint("VBoxSup::DriverEntry: supdrvInitDevExit failed with vrc=%d!\n", vrc);
|
---|
[91559] | 777 | Log(("supdrvInitDevExit failed with vrc=%d!\n", vrc));
|
---|
| 778 | rcNt = VBoxDrvNtErr2NtStatus(vrc);
|
---|
| 779 |
|
---|
| 780 | vboxdrvNtDestroyDevices();
|
---|
[51770] | 781 | }
|
---|
[104428] | 782 | else
|
---|
| 783 | DbgPrint("VBoxSup::DriverEntry: vboxdrvNtCreateDevices failed with rcNt=%#x!\n", rcNt);
|
---|
[91559] | 784 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 785 | RTSpinlockDestroy(g_hNtUserIdLock);
|
---|
| 786 | g_hNtUserIdLock = NIL_RTSPINLOCK;
|
---|
| 787 | #endif
|
---|
| 788 | }
|
---|
| 789 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 790 | else
|
---|
[104428] | 791 | {
|
---|
| 792 | DbgPrint("VBoxSup::DriverEntry: RTSpinlockCreate failed with vrc=%d!\n", vrc);
|
---|
[51770] | 793 | rcNt = VBoxDrvNtErr2NtStatus(vrc);
|
---|
[104428] | 794 | }
|
---|
[91559] | 795 | #endif
|
---|
[51770] | 796 | #ifdef VBOX_WITH_HARDENING
|
---|
| 797 | supdrvNtProtectTerm();
|
---|
| 798 | #endif
|
---|
[1] | 799 | }
|
---|
[104428] | 800 | #ifdef VBOX_WITH_HARDENING
|
---|
| 801 | else
|
---|
| 802 | DbgPrint("VBoxSup::DriverEntry: supdrvNtProtectInit failed with rcNt=%#x!\n", rcNt);
|
---|
| 803 | #endif
|
---|
[51941] | 804 | RTTermRunCallbacks(RTTERMREASON_UNLOAD, 0);
|
---|
[51770] | 805 | RTR0Term();
|
---|
[1] | 806 | }
|
---|
[51770] | 807 | else
|
---|
| 808 | {
|
---|
[104428] | 809 | DbgPrint("VBoxSup::DriverEntry: RTR0Init failed with vrc=%d!\n", vrc);
|
---|
[51770] | 810 | Log(("RTR0Init failed with vrc=%d!\n", vrc));
|
---|
| 811 | rcNt = VBoxDrvNtErr2NtStatus(vrc);
|
---|
| 812 | }
|
---|
[44188] | 813 | if (NT_SUCCESS(rcNt))
|
---|
| 814 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 815 | return rcNt;
|
---|
[1] | 816 | }
|
---|
| 817 |
|
---|
| 818 |
|
---|
| 819 | /**
|
---|
| 820 | * Unload the driver.
|
---|
| 821 | *
|
---|
| 822 | * @param pDrvObj Driver object.
|
---|
| 823 | */
|
---|
[4800] | 824 | void _stdcall VBoxDrvNtUnload(PDRIVER_OBJECT pDrvObj)
|
---|
[1] | 825 | {
|
---|
[44188] | 826 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
[1] | 827 |
|
---|
[25465] | 828 | Log(("VBoxDrvNtUnload at irql %d\n", KeGetCurrentIrql()));
|
---|
[7462] | 829 |
|
---|
[13495] | 830 | /* Clean up the power callback registration. */
|
---|
| 831 | if (pDevExt->hPowerCallback)
|
---|
| 832 | ExUnregisterCallback(pDevExt->hPowerCallback);
|
---|
| 833 | if (pDevExt->pObjPowerCallback)
|
---|
| 834 | ObDereferenceObject(pDevExt->pObjPowerCallback);
|
---|
| 835 |
|
---|
[1] | 836 | /*
|
---|
| 837 | * We ASSUME that it's not possible to unload a driver with open handles.
|
---|
| 838 | */
|
---|
| 839 | supdrvDeleteDevExt(pDevExt);
|
---|
[91559] | 840 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 841 | RTSpinlockDestroy(g_hNtUserIdLock);
|
---|
| 842 | g_hNtUserIdLock = NIL_RTSPINLOCK;
|
---|
| 843 | #endif
|
---|
[51770] | 844 | #ifdef VBOX_WITH_HARDENING
|
---|
| 845 | supdrvNtProtectTerm();
|
---|
| 846 | #endif
|
---|
[51941] | 847 | RTTermRunCallbacks(RTTERMREASON_UNLOAD, 0);
|
---|
[9578] | 848 | RTR0Term();
|
---|
[44188] | 849 | vboxdrvNtDestroyDevices();
|
---|
| 850 |
|
---|
| 851 | NOREF(pDrvObj);
|
---|
[1] | 852 | }
|
---|
| 853 |
|
---|
[91559] | 854 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
[1] | 855 |
|
---|
| 856 | /**
|
---|
[91559] | 857 | * Worker for supdrvNtUserIdMakeForSession.
|
---|
| 858 | */
|
---|
| 859 | static bool supdrvNtUserIdMakeUid(PSUPDRVNTUSERID pNtUserId)
|
---|
| 860 | {
|
---|
| 861 | pNtUserId->UidCore.Key = pNtUserId->HashCore.Key;
|
---|
| 862 | for (uint32_t cTries = 0; cTries < _4K; cTries++)
|
---|
| 863 | {
|
---|
| 864 | bool fRc = RTAvlU32Insert(&g_NtUserIdUidTree, &pNtUserId->UidCore);
|
---|
| 865 | if (fRc)
|
---|
| 866 | return true;
|
---|
| 867 | pNtUserId->UidCore.Key += pNtUserId->cchSid | 1;
|
---|
| 868 | }
|
---|
| 869 | return false;
|
---|
| 870 | }
|
---|
| 871 |
|
---|
| 872 |
|
---|
| 873 | /**
|
---|
| 874 | * Try create a RTUID value for the session.
|
---|
| 875 | *
|
---|
| 876 | * @returns VBox status code.
|
---|
| 877 | * @param pSession The session to try set SUPDRVSESSION::Uid for.
|
---|
| 878 | */
|
---|
| 879 | static int supdrvNtUserIdMakeForSession(PSUPDRVSESSION pSession)
|
---|
| 880 | {
|
---|
| 881 | /*
|
---|
| 882 | * Get the current security context and query the User SID for it.
|
---|
| 883 | */
|
---|
| 884 | SECURITY_SUBJECT_CONTEXT Ctx = { NULL, SecurityIdentification, NULL, NULL };
|
---|
| 885 | SeCaptureSubjectContext(&Ctx);
|
---|
| 886 |
|
---|
| 887 | int rc;
|
---|
| 888 | TOKEN_USER *pTokenUser = NULL;
|
---|
| 889 | NTSTATUS rcNt = SeQueryInformationToken(SeQuerySubjectContextToken(&Ctx) /* or always PrimaryToken?*/,
|
---|
| 890 | TokenUser, (PVOID *)&pTokenUser);
|
---|
| 891 | if (NT_SUCCESS(rcNt))
|
---|
| 892 | {
|
---|
| 893 | /*
|
---|
| 894 | * Convert the user SID to a string to make it easier to handle, then prepare
|
---|
| 895 | * a user ID entry for it as that way we can combine lookup and insertion and
|
---|
| 896 | * avoid needing to deal with races.
|
---|
| 897 | */
|
---|
| 898 | UNICODE_STRING UniStr = RTNT_NULL_UNISTR();
|
---|
[92203] | 899 | rcNt = RtlConvertSidToUnicodeString(&UniStr, pTokenUser->User.Sid, TRUE /*AllocateDesitnationString*/);
|
---|
[91559] | 900 | if (NT_SUCCESS(rcNt))
|
---|
| 901 | {
|
---|
| 902 | size_t cchSid = 0;
|
---|
| 903 | rc = RTUtf16CalcUtf8LenEx(UniStr.Buffer, UniStr.Length / sizeof(RTUTF16), &cchSid);
|
---|
| 904 | if (RT_SUCCESS(rc))
|
---|
| 905 | {
|
---|
| 906 | PSUPDRVNTUSERID const pNtUserIdNew = (PSUPDRVNTUSERID)RTMemAlloc(RT_UOFFSETOF_DYN(SUPDRVNTUSERID, szSid[cchSid + 1]));
|
---|
| 907 | if (pNtUserIdNew)
|
---|
| 908 | {
|
---|
| 909 | char *pszSid = pNtUserIdNew->szSid;
|
---|
| 910 | rc = RTUtf16ToUtf8Ex(UniStr.Buffer, UniStr.Length / sizeof(RTUTF16), &pszSid, cchSid + 1, NULL);
|
---|
| 911 | if (RT_SUCCESS(rc))
|
---|
| 912 | {
|
---|
| 913 | pNtUserIdNew->HashCore.Key = RTStrHash1(pNtUserIdNew->szSid);
|
---|
| 914 | pNtUserIdNew->cchSid = (uint16_t)cchSid;
|
---|
| 915 | pNtUserIdNew->cRefs = 1;
|
---|
[92203] | 916 | Log5Func(("pNtUserId=%p cchSid=%u hash=%#x '%s'\n", pNtUserIdNew, cchSid, pNtUserIdNew->HashCore.Key, pszSid));
|
---|
[91559] | 917 |
|
---|
| 918 | /*
|
---|
| 919 | * Do the lookup / insert.
|
---|
| 920 | */
|
---|
| 921 | RTSpinlockAcquire(g_hNtUserIdLock);
|
---|
| 922 | AssertCompileMemberOffset(SUPDRVNTUSERID, HashCore, 0);
|
---|
| 923 | PSUPDRVNTUSERID pNtUserId = (PSUPDRVNTUSERID)RTAvllU32Get(&g_NtUserIdHashTree, pNtUserIdNew->HashCore.Key);
|
---|
| 924 | if (pNtUserId)
|
---|
| 925 | {
|
---|
| 926 | /* Match the strings till we reach the end of the collision list. */
|
---|
| 927 | PSUPDRVNTUSERID const pNtUserIdHead = pNtUserId;
|
---|
| 928 | while ( pNtUserId
|
---|
| 929 | && ( pNtUserId->cchSid != cchSid
|
---|
| 930 | || memcmp(pNtUserId->szSid, pNtUserId->szSid, cchSid) != 0))
|
---|
| 931 | pNtUserId = (PSUPDRVNTUSERID)pNtUserId->HashCore.pList;
|
---|
| 932 | if (pNtUserId)
|
---|
| 933 | {
|
---|
| 934 | /* Found matching: Retain reference and free the new entry we prepared. */
|
---|
[92203] | 935 | uint32_t const cRefs = ASMAtomicIncU32(&pNtUserId->cRefs);
|
---|
| 936 | Assert(cRefs < _16K); RT_NOREF(cRefs);
|
---|
[91559] | 937 | RTSpinlockRelease(g_hNtUserIdLock);
|
---|
[92203] | 938 | Log5Func(("Using %p / %#x instead\n", pNtUserId, pNtUserId->UidCore.Key));
|
---|
[91559] | 939 | }
|
---|
| 940 | else
|
---|
| 941 | {
|
---|
| 942 | /* No match: Try insert prepared entry after the head node. */
|
---|
| 943 | if (supdrvNtUserIdMakeUid(pNtUserIdNew))
|
---|
| 944 | {
|
---|
| 945 | pNtUserIdNew->HashCore.pList = pNtUserIdHead->HashCore.pList;
|
---|
| 946 | pNtUserIdHead->HashCore.pList = &pNtUserIdNew->HashCore;
|
---|
| 947 | pNtUserId = pNtUserIdNew;
|
---|
| 948 | }
|
---|
| 949 | RTSpinlockRelease(g_hNtUserIdLock);
|
---|
[92203] | 950 | if (pNtUserId)
|
---|
| 951 | Log5Func(("Using %p / %#x (the prepared one)\n", pNtUserId, pNtUserId->UidCore.Key));
|
---|
| 952 | else
|
---|
| 953 | LogRelFunc(("supdrvNtUserIdMakeForSession: failed to insert new\n"));
|
---|
[91559] | 954 | }
|
---|
| 955 | }
|
---|
| 956 | else
|
---|
| 957 | {
|
---|
| 958 | /* No matching hash: Try insert the prepared entry. */
|
---|
| 959 | pNtUserIdNew->UidCore.Key = pNtUserIdNew->HashCore.Key;
|
---|
| 960 | if (supdrvNtUserIdMakeUid(pNtUserIdNew))
|
---|
| 961 | {
|
---|
| 962 | RTAvllU32Insert(&g_NtUserIdHashTree, &pNtUserIdNew->HashCore);
|
---|
| 963 | pNtUserId = pNtUserIdNew;
|
---|
| 964 | }
|
---|
| 965 | RTSpinlockRelease(g_hNtUserIdLock);
|
---|
[92203] | 966 | if (pNtUserId)
|
---|
| 967 | Log5Func(("Using %p / %#x (the prepared one, no conflict)\n", pNtUserId, pNtUserId->UidCore.Key));
|
---|
| 968 | else
|
---|
| 969 | LogRelFunc(("failed to insert!! WTF!?!\n"));
|
---|
[91559] | 970 | }
|
---|
| 971 |
|
---|
| 972 | if (pNtUserId != pNtUserIdNew)
|
---|
| 973 | RTMemFree(pNtUserIdNew);
|
---|
| 974 |
|
---|
| 975 | /*
|
---|
| 976 | * Update the session info.
|
---|
| 977 | */
|
---|
| 978 | pSession->pNtUserId = pNtUserId;
|
---|
| 979 | pSession->Uid = pNtUserId ? (RTUID)pNtUserId->UidCore.Key : NIL_RTUID;
|
---|
| 980 | }
|
---|
| 981 | else
|
---|
| 982 | RTMemFree(pNtUserIdNew);
|
---|
| 983 | }
|
---|
| 984 | else
|
---|
| 985 | rc = VERR_NO_MEMORY;
|
---|
| 986 | }
|
---|
| 987 | RtlFreeUnicodeString(&UniStr);
|
---|
| 988 | }
|
---|
| 989 | else
|
---|
[92203] | 990 | {
|
---|
[91559] | 991 | rc = RTErrConvertFromNtStatus(rcNt);
|
---|
[92203] | 992 | LogFunc(("RtlConvertSidToUnicodeString failed: %#x / %Rrc\n", rcNt, rc));
|
---|
| 993 | }
|
---|
[91559] | 994 | ExFreePool(pTokenUser);
|
---|
| 995 | }
|
---|
| 996 | else
|
---|
[92203] | 997 | {
|
---|
[91559] | 998 | rc = RTErrConvertFromNtStatus(rcNt);
|
---|
[92203] | 999 | LogFunc(("SeQueryInformationToken failed: %#x / %Rrc\n", rcNt, rc));
|
---|
| 1000 | }
|
---|
[91559] | 1001 |
|
---|
| 1002 | SeReleaseSubjectContext(&Ctx);
|
---|
| 1003 | return rc;
|
---|
| 1004 | }
|
---|
| 1005 |
|
---|
| 1006 |
|
---|
| 1007 | /**
|
---|
| 1008 | * Releases a reference to @a pNtUserId.
|
---|
| 1009 | *
|
---|
| 1010 | * @param pNtUserId The NT user ID entry to release.
|
---|
| 1011 | */
|
---|
| 1012 | static void supdrvNtUserIdRelease(PSUPDRVNTUSERID pNtUserId)
|
---|
| 1013 | {
|
---|
| 1014 | if (pNtUserId)
|
---|
| 1015 | {
|
---|
[92203] | 1016 | uint32_t const cRefs = ASMAtomicDecU32(&pNtUserId->cRefs);
|
---|
| 1017 | Log5Func(("%p / %#x: cRefs=%d\n", pNtUserId, pNtUserId->cRefs));
|
---|
[91559] | 1018 | Assert(cRefs < _8K);
|
---|
| 1019 | if (cRefs == 0)
|
---|
| 1020 | {
|
---|
| 1021 | RTSpinlockAcquire(g_hNtUserIdLock);
|
---|
| 1022 | if (pNtUserId->cRefs == 0)
|
---|
| 1023 | {
|
---|
| 1024 | PAVLLU32NODECORE pAssert1 = RTAvllU32RemoveNode(&g_NtUserIdHashTree, &pNtUserId->HashCore);
|
---|
| 1025 | PAVLU32NODECORE pAssert2 = RTAvlU32Remove(&g_NtUserIdUidTree, pNtUserId->UidCore.Key);
|
---|
| 1026 |
|
---|
| 1027 | RTSpinlockRelease(g_hNtUserIdLock);
|
---|
| 1028 |
|
---|
| 1029 | Assert(pAssert1 == &pNtUserId->HashCore);
|
---|
| 1030 | Assert(pAssert2 == &pNtUserId->UidCore);
|
---|
| 1031 | RT_NOREF(pAssert1, pAssert2);
|
---|
| 1032 |
|
---|
| 1033 | RTMemFree(pNtUserId);
|
---|
| 1034 | }
|
---|
| 1035 | else
|
---|
| 1036 | RTSpinlockRelease(g_hNtUserIdLock);
|
---|
| 1037 | }
|
---|
| 1038 | }
|
---|
| 1039 | }
|
---|
| 1040 |
|
---|
| 1041 | #endif /* VBOXDRV_WITH_SID_TO_UID_MAPPING */
|
---|
| 1042 |
|
---|
| 1043 | /**
|
---|
[51770] | 1044 | * For simplifying request completion into a simple return statement, extended
|
---|
| 1045 | * version.
|
---|
| 1046 | *
|
---|
| 1047 | * @returns rcNt
|
---|
| 1048 | * @param rcNt The status code.
|
---|
| 1049 | * @param uInfo Extra info value.
|
---|
| 1050 | * @param pIrp The IRP.
|
---|
| 1051 | */
|
---|
| 1052 | DECLINLINE(NTSTATUS) supdrvNtCompleteRequestEx(NTSTATUS rcNt, ULONG_PTR uInfo, PIRP pIrp)
|
---|
| 1053 | {
|
---|
| 1054 | pIrp->IoStatus.Status = rcNt;
|
---|
| 1055 | pIrp->IoStatus.Information = uInfo;
|
---|
| 1056 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1057 | return rcNt;
|
---|
| 1058 | }
|
---|
| 1059 |
|
---|
| 1060 |
|
---|
| 1061 | /**
|
---|
| 1062 | * For simplifying request completion into a simple return statement.
|
---|
| 1063 | *
|
---|
| 1064 | * @returns rcNt
|
---|
| 1065 | * @param rcNt The status code.
|
---|
| 1066 | * @param pIrp The IRP.
|
---|
| 1067 | */
|
---|
| 1068 | DECLINLINE(NTSTATUS) supdrvNtCompleteRequest(NTSTATUS rcNt, PIRP pIrp)
|
---|
| 1069 | {
|
---|
| 1070 | return supdrvNtCompleteRequestEx(rcNt, 0 /*uInfo*/, pIrp);
|
---|
| 1071 | }
|
---|
| 1072 |
|
---|
| 1073 |
|
---|
| 1074 | /**
|
---|
[1] | 1075 | * Create (i.e. Open) file entry point.
|
---|
| 1076 | *
|
---|
| 1077 | * @param pDevObj Device object.
|
---|
| 1078 | * @param pIrp Request packet.
|
---|
| 1079 | */
|
---|
[4800] | 1080 | NTSTATUS _stdcall VBoxDrvNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1081 | {
|
---|
[38323] | 1082 | Log(("VBoxDrvNtCreate: RequestorMode=%d\n", pIrp->RequestorMode));
|
---|
[51770] | 1083 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[1] | 1084 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
[51770] | 1085 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[1] | 1086 |
|
---|
| 1087 | /*
|
---|
| 1088 | * We are not remotely similar to a directory...
|
---|
| 1089 | * (But this is possible.)
|
---|
| 1090 | */
|
---|
| 1091 | if (pStack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
|
---|
[51770] | 1092 | return supdrvNtCompleteRequest(STATUS_NOT_A_DIRECTORY, pIrp);
|
---|
[1] | 1093 |
|
---|
| 1094 | /*
|
---|
[41067] | 1095 | * Don't create a session for kernel clients, they'll close the handle
|
---|
| 1096 | * immediately and work with the file object via
|
---|
[51770] | 1097 | * VBoxDrvNtInternalDeviceControl. The first request will be one to
|
---|
| 1098 | * create a session.
|
---|
[1] | 1099 | */
|
---|
[38323] | 1100 | NTSTATUS rcNt;
|
---|
| 1101 | if (pIrp->RequestorMode == KernelMode)
|
---|
[51770] | 1102 | {
|
---|
| 1103 | if (pDevObj == g_pDevObjSys)
|
---|
| 1104 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1105 |
|
---|
| 1106 | rcNt = STATUS_ACCESS_DENIED;
|
---|
| 1107 | }
|
---|
[53002] | 1108 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1109 | /*
|
---|
| 1110 | * Anyone can open the error device.
|
---|
| 1111 | */
|
---|
| 1112 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1113 | {
|
---|
| 1114 | pFileObj->FsContext = NULL;
|
---|
| 1115 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1116 | }
|
---|
| 1117 | #endif
|
---|
[38323] | 1118 | else
|
---|
| 1119 | {
|
---|
[51770] | 1120 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
[38323] | 1121 | /*
|
---|
[51770] | 1122 | * Make sure no debuggers are attached to non-user processes.
|
---|
[38323] | 1123 | */
|
---|
[51770] | 1124 | if ( pDevObj != g_pDevObjUsr
|
---|
| 1125 | && supdrvNtIsDebuggerAttached())
|
---|
| 1126 | {
|
---|
| 1127 | LogRel(("vboxdrv: Process %p is being debugged, access to vboxdrv / vboxdrvu declined.\n",
|
---|
| 1128 | PsGetProcessId(PsGetCurrentProcess())));
|
---|
| 1129 | rcNt = STATUS_TRUST_FAILURE;
|
---|
| 1130 | }
|
---|
| 1131 | else
|
---|
| 1132 | #endif
|
---|
| 1133 | {
|
---|
| 1134 | int rc = VINF_SUCCESS;
|
---|
| 1135 |
|
---|
| 1136 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1137 | /*
|
---|
| 1138 | * Access to the stub device is only granted to processes which
|
---|
| 1139 | * passes verification.
|
---|
| 1140 | *
|
---|
| 1141 | * Note! The stub device has no need for a SUPDRVSESSION structure,
|
---|
| 1142 | * so the it uses the SUPDRVNTPROTECT directly instead.
|
---|
| 1143 | */
|
---|
| 1144 | if (pDevObj == g_pDevObjStub)
|
---|
| 1145 | {
|
---|
| 1146 | PSUPDRVNTPROTECT pNtProtect = NULL;
|
---|
| 1147 | rc = supdrvNtProtectCreate(&pNtProtect, PsGetProcessId(PsGetCurrentProcess()),
|
---|
| 1148 | kSupDrvNtProtectKind_StubUnverified, true /*fLink*/);
|
---|
| 1149 | if (RT_SUCCESS(rc))
|
---|
| 1150 | {
|
---|
| 1151 | rc = supdrvNtProtectFindAssociatedCsrss(pNtProtect);
|
---|
| 1152 | if (RT_SUCCESS(rc))
|
---|
| 1153 | rc = supdrvNtProtectVerifyProcess(pNtProtect);
|
---|
| 1154 | if (RT_SUCCESS(rc))
|
---|
| 1155 | {
|
---|
| 1156 | pFileObj->FsContext = pNtProtect; /* Keeps reference. */
|
---|
| 1157 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1158 | }
|
---|
| 1159 |
|
---|
| 1160 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1161 | }
|
---|
| 1162 | LogRel(("vboxdrv: Declined %p access to VBoxDrvStub: rc=%d\n", PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 1163 | }
|
---|
| 1164 | /*
|
---|
| 1165 | * Unrestricted access is only granted to a process in the
|
---|
| 1166 | * VmProcessUnconfirmed state that checks out correctly and is
|
---|
| 1167 | * allowed to transition to VmProcessConfirmed. Again, only one
|
---|
| 1168 | * session per process.
|
---|
| 1169 | */
|
---|
| 1170 | else if (pDevObj != g_pDevObjUsr)
|
---|
| 1171 | {
|
---|
| 1172 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(PsGetProcessId(PsGetCurrentProcess()));
|
---|
| 1173 | if (pNtProtect)
|
---|
| 1174 | {
|
---|
| 1175 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 1176 | {
|
---|
| 1177 | rc = supdrvNtProtectVerifyProcess(pNtProtect);
|
---|
| 1178 | if (RT_SUCCESS(rc))
|
---|
| 1179 | {
|
---|
| 1180 | /* Create a session. */
|
---|
| 1181 | PSUPDRVSESSION pSession;
|
---|
| 1182 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, pDevObj == g_pDevObjSys /*fUnrestricted*/,
|
---|
| 1183 | &pSession);
|
---|
| 1184 | if (RT_SUCCESS(rc))
|
---|
| 1185 | {
|
---|
[91559] | 1186 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 1187 | rc = supdrvNtUserIdMakeForSession(pSession);
|
---|
| 1188 | if (RT_SUCCESS(rc))
|
---|
| 1189 | #endif
|
---|
| 1190 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
[51770] | 1191 | supdrvSessionRelease(pSession);
|
---|
| 1192 | if (RT_SUCCESS(rc))
|
---|
| 1193 | {
|
---|
| 1194 | pSession->pNtProtect = pNtProtect; /* Keeps reference. */
|
---|
| 1195 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1196 | }
|
---|
| 1197 | }
|
---|
| 1198 |
|
---|
| 1199 | /* No second attempt. */
|
---|
| 1200 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 1201 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 1202 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 1203 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 1204 |
|
---|
| 1205 | LogRel(("vboxdrv: supdrvCreateSession failed for process %p: rc=%d.\n",
|
---|
| 1206 | PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 1207 | }
|
---|
| 1208 | else
|
---|
| 1209 | LogRel(("vboxdrv: Process %p failed process verification: rc=%d.\n",
|
---|
| 1210 | PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 1211 | }
|
---|
| 1212 | else
|
---|
| 1213 | {
|
---|
| 1214 | LogRel(("vboxdrv: %p is not a budding VM process (enmProcessKind=%d).\n",
|
---|
| 1215 | PsGetProcessId(PsGetCurrentProcess()), pNtProtect->enmProcessKind));
|
---|
[57201] | 1216 | rc = VERR_SUPDRV_NOT_BUDDING_VM_PROCESS_2;
|
---|
[51770] | 1217 | }
|
---|
| 1218 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1219 | }
|
---|
| 1220 | else
|
---|
| 1221 | {
|
---|
| 1222 | LogRel(("vboxdrv: %p is not a budding VM process.\n", PsGetProcessId(PsGetCurrentProcess())));
|
---|
[57201] | 1223 | rc = VERR_SUPDRV_NOT_BUDDING_VM_PROCESS_1;
|
---|
[51770] | 1224 | }
|
---|
| 1225 | }
|
---|
| 1226 | /*
|
---|
| 1227 | * Call common code to create an unprivileged session.
|
---|
| 1228 | */
|
---|
| 1229 | else
|
---|
| 1230 | {
|
---|
| 1231 | PSUPDRVSESSION pSession;
|
---|
| 1232 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, false /*fUnrestricted*/, &pSession);
|
---|
| 1233 | if (RT_SUCCESS(rc))
|
---|
| 1234 | {
|
---|
[91559] | 1235 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 1236 | rc = supdrvNtUserIdMakeForSession(pSession);
|
---|
| 1237 | if (RT_SUCCESS(rc))
|
---|
| 1238 | #endif
|
---|
| 1239 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
[51770] | 1240 | supdrvSessionRelease(pSession);
|
---|
| 1241 | if (RT_SUCCESS(rc))
|
---|
| 1242 | {
|
---|
| 1243 | pFileObj->FsContext = pSession; /* Keeps reference. No race. */
|
---|
| 1244 | pSession->pNtProtect = NULL;
|
---|
| 1245 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1246 | }
|
---|
| 1247 | }
|
---|
| 1248 | }
|
---|
| 1249 |
|
---|
| 1250 | #else /* !VBOX_WITH_HARDENING */
|
---|
| 1251 | /*
|
---|
| 1252 | * Call common code to create a session.
|
---|
| 1253 | */
|
---|
| 1254 | pFileObj->FsContext = NULL;
|
---|
| 1255 | PSUPDRVSESSION pSession;
|
---|
| 1256 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, pDevObj == g_pDevObjSys /*fUnrestricted*/, &pSession);
|
---|
| 1257 | if (RT_SUCCESS(rc))
|
---|
| 1258 | {
|
---|
[91559] | 1259 | # ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 1260 | rc = supdrvNtUserIdMakeForSession(pSession);
|
---|
| 1261 | if (RT_SUCCESS(rc))
|
---|
| 1262 | # endif
|
---|
| 1263 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
[51770] | 1264 | supdrvSessionRelease(pSession);
|
---|
| 1265 | if (RT_SUCCESS(rc))
|
---|
| 1266 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 1267 |
|
---|
| 1268 | }
|
---|
| 1269 | #endif /* !VBOX_WITH_HARDENING */
|
---|
| 1270 |
|
---|
| 1271 | /* bail out */
|
---|
| 1272 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 1273 | }
|
---|
[38323] | 1274 | }
|
---|
[1] | 1275 |
|
---|
[51770] | 1276 | Assert(!NT_SUCCESS(rcNt));
|
---|
| 1277 | pFileObj->FsContext = NULL;
|
---|
| 1278 | return supdrvNtCompleteRequest(rcNt, pIrp); /* Note. the IoStatus is completely ignored on error. */
|
---|
[1] | 1279 | }
|
---|
| 1280 |
|
---|
| 1281 |
|
---|
| 1282 | /**
|
---|
[38075] | 1283 | * Clean up file handle entry point.
|
---|
| 1284 | *
|
---|
[68529] | 1285 | * This is called when the last handle reference is released, or something like
|
---|
| 1286 | * that. In the case of IoGetDeviceObjectPointer, this is called as it closes
|
---|
| 1287 | * the handle, however it will go on using the file object afterwards...
|
---|
| 1288 | *
|
---|
[38075] | 1289 | * @param pDevObj Device object.
|
---|
| 1290 | * @param pIrp Request packet.
|
---|
| 1291 | */
|
---|
| 1292 | NTSTATUS _stdcall VBoxDrvNtCleanup(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 1293 | {
|
---|
[44188] | 1294 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[38075] | 1295 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
| 1296 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
| 1297 |
|
---|
[51770] | 1298 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1299 | if (pDevObj == g_pDevObjStub)
|
---|
[38075] | 1300 | {
|
---|
[51770] | 1301 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)pFileObj->FsContext;
|
---|
| 1302 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pNtProtect=%p\n", pDevExt, pFileObj, pNtProtect));
|
---|
| 1303 | if (pNtProtect)
|
---|
| 1304 | {
|
---|
| 1305 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1306 | pFileObj->FsContext = NULL;
|
---|
| 1307 | }
|
---|
[38075] | 1308 | }
|
---|
[53002] | 1309 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1310 | supdrvNtErrorInfoCleanupProcess(PsGetCurrentProcessId());
|
---|
[51770] | 1311 | else
|
---|
| 1312 | #endif
|
---|
| 1313 | {
|
---|
| 1314 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1315 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
| 1316 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pSession=%p\n", pDevExt, pFileObj, pSession));
|
---|
| 1317 | if (pSession)
|
---|
| 1318 | {
|
---|
| 1319 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 1320 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 1321 | }
|
---|
| 1322 | }
|
---|
[38075] | 1323 |
|
---|
[51770] | 1324 | return supdrvNtCompleteRequest(STATUS_SUCCESS, pIrp);
|
---|
[38075] | 1325 | }
|
---|
| 1326 |
|
---|
| 1327 |
|
---|
| 1328 | /**
|
---|
[1] | 1329 | * Close file entry point.
|
---|
| 1330 | *
|
---|
| 1331 | * @param pDevObj Device object.
|
---|
| 1332 | * @param pIrp Request packet.
|
---|
| 1333 | */
|
---|
[4800] | 1334 | NTSTATUS _stdcall VBoxDrvNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1335 | {
|
---|
[44188] | 1336 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[38075] | 1337 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[1] | 1338 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
[38075] | 1339 |
|
---|
[51770] | 1340 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1341 | if (pDevObj == g_pDevObjStub)
|
---|
[38075] | 1342 | {
|
---|
[51770] | 1343 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)pFileObj->FsContext;
|
---|
| 1344 | Log(("VBoxDrvNtClose: pDevExt=%p pFileObj=%p pNtProtect=%p\n", pDevExt, pFileObj, pNtProtect));
|
---|
| 1345 | if (pNtProtect)
|
---|
| 1346 | {
|
---|
| 1347 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1348 | pFileObj->FsContext = NULL;
|
---|
| 1349 | }
|
---|
[38075] | 1350 | }
|
---|
[53002] | 1351 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1352 | supdrvNtErrorInfoCleanupProcess(PsGetCurrentProcessId());
|
---|
[51770] | 1353 | else
|
---|
| 1354 | #endif
|
---|
| 1355 | {
|
---|
| 1356 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1357 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
| 1358 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pSession=%p\n", pDevExt, pFileObj, pSession));
|
---|
| 1359 | if (pSession)
|
---|
| 1360 | {
|
---|
| 1361 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 1362 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 1363 | }
|
---|
| 1364 | }
|
---|
[38075] | 1365 |
|
---|
[51770] | 1366 | return supdrvNtCompleteRequest(STATUS_SUCCESS, pIrp);
|
---|
| 1367 | }
|
---|
[1] | 1368 |
|
---|
[51770] | 1369 |
|
---|
| 1370 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
| 1371 | /**
|
---|
| 1372 | * Fast I/O device control callback.
|
---|
| 1373 | *
|
---|
| 1374 | * This performs no buffering, neither on the way in or out.
|
---|
| 1375 | *
|
---|
| 1376 | * @returns TRUE if handled, FALSE if the normal I/O control routine should be
|
---|
| 1377 | * called.
|
---|
| 1378 | * @param pFileObj The file object.
|
---|
| 1379 | * @param fWait Whether it's a blocking call
|
---|
| 1380 | * @param pvInput The input buffer as specified by the user.
|
---|
| 1381 | * @param cbInput The size of the input buffer.
|
---|
| 1382 | * @param pvOutput The output buffer as specfied by the user.
|
---|
| 1383 | * @param cbOutput The size of the output buffer.
|
---|
[58340] | 1384 | * @param uCmd The I/O command/function being invoked.
|
---|
[51770] | 1385 | * @param pIoStatus Where to return the status of the operation.
|
---|
| 1386 | * @param pDevObj The device object..
|
---|
| 1387 | */
|
---|
| 1388 | static BOOLEAN _stdcall VBoxDrvNtFastIoDeviceControl(PFILE_OBJECT pFileObj, BOOLEAN fWait, PVOID pvInput, ULONG cbInput,
|
---|
| 1389 | PVOID pvOutput, ULONG cbOutput, ULONG uCmd,
|
---|
| 1390 | PIO_STATUS_BLOCK pIoStatus, PDEVICE_OBJECT pDevObj)
|
---|
| 1391 | {
|
---|
[62666] | 1392 | RT_NOREF1(fWait);
|
---|
| 1393 |
|
---|
[53002] | 1394 | /*
|
---|
| 1395 | * Only the normal devices, not the stub or error info ones.
|
---|
| 1396 | */
|
---|
| 1397 | if (pDevObj != g_pDevObjSys && pDevObj != g_pDevObjUsr)
|
---|
| 1398 | {
|
---|
| 1399 | pIoStatus->Status = STATUS_NOT_SUPPORTED;
|
---|
| 1400 | pIoStatus->Information = 0;
|
---|
| 1401 | return TRUE;
|
---|
| 1402 | }
|
---|
[51770] | 1403 |
|
---|
| 1404 | /*
|
---|
| 1405 | * Check the input a little bit and get a the session references.
|
---|
| 1406 | */
|
---|
[53002] | 1407 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1408 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1409 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
[51770] | 1410 | if (!pSession)
|
---|
| 1411 | {
|
---|
| 1412 | pIoStatus->Status = STATUS_TRUST_FAILURE;
|
---|
| 1413 | pIoStatus->Information = 0;
|
---|
| 1414 | return TRUE;
|
---|
| 1415 | }
|
---|
| 1416 |
|
---|
| 1417 | if (pSession->fUnrestricted)
|
---|
| 1418 | {
|
---|
| 1419 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
| 1420 | if (supdrvNtIsDebuggerAttached())
|
---|
| 1421 | {
|
---|
| 1422 | pIoStatus->Status = STATUS_TRUST_FAILURE;
|
---|
| 1423 | pIoStatus->Information = 0;
|
---|
| 1424 | supdrvSessionRelease(pSession);
|
---|
| 1425 | return TRUE;
|
---|
| 1426 | }
|
---|
| 1427 | #endif
|
---|
| 1428 |
|
---|
| 1429 | /*
|
---|
| 1430 | * Deal with the 2-3 high-speed IOCtl that takes their arguments from
|
---|
| 1431 | * the session and iCmd, and does not return anything.
|
---|
| 1432 | */
|
---|
[71198] | 1433 | if ( (uCmd & 3) == METHOD_NEITHER
|
---|
| 1434 | && (uint32_t)((uCmd - SUP_IOCTL_FAST_DO_FIRST) >> 2) < (uint32_t)32)
|
---|
[51770] | 1435 | {
|
---|
[71198] | 1436 | int rc = supdrvIOCtlFast((uCmd - SUP_IOCTL_FAST_DO_FIRST) >> 2,
|
---|
| 1437 | (unsigned)(uintptr_t)pvOutput/* VMCPU id */,
|
---|
| 1438 | pDevExt, pSession);
|
---|
[51770] | 1439 | pIoStatus->Status = RT_SUCCESS(rc) ? STATUS_SUCCESS : STATUS_INVALID_PARAMETER;
|
---|
| 1440 | pIoStatus->Information = 0; /* Could be used to pass rc if we liked. */
|
---|
| 1441 | supdrvSessionRelease(pSession);
|
---|
| 1442 | return TRUE;
|
---|
| 1443 | }
|
---|
| 1444 | }
|
---|
| 1445 |
|
---|
| 1446 | /*
|
---|
| 1447 | * The normal path.
|
---|
| 1448 | */
|
---|
| 1449 | NTSTATUS rcNt;
|
---|
| 1450 | unsigned cbOut = 0;
|
---|
| 1451 | int rc = 0;
|
---|
| 1452 | Log2(("VBoxDrvNtFastIoDeviceControl(%p): ioctl=%#x pvIn=%p cbIn=%#x pvOut=%p cbOut=%#x pSession=%p\n",
|
---|
| 1453 | pDevExt, uCmd, pvInput, cbInput, pvOutput, cbOutput, pSession));
|
---|
| 1454 |
|
---|
| 1455 | # ifdef RT_ARCH_AMD64
|
---|
| 1456 | /* Don't allow 32-bit processes to do any I/O controls. */
|
---|
| 1457 | if (!IoIs32bitProcess(NULL))
|
---|
| 1458 | # endif
|
---|
| 1459 | {
|
---|
| 1460 | /*
|
---|
| 1461 | * In this fast I/O device control path we have to do our own buffering.
|
---|
| 1462 | */
|
---|
| 1463 | /* Verify that the I/O control function matches our pattern. */
|
---|
| 1464 | if ((uCmd & 0x3) == METHOD_BUFFERED)
|
---|
| 1465 | {
|
---|
| 1466 | /* Get the header so we can validate it a little bit against the
|
---|
| 1467 | parameters before allocating any memory kernel for the reqest. */
|
---|
| 1468 | SUPREQHDR Hdr;
|
---|
| 1469 | if (cbInput >= sizeof(Hdr) && cbOutput >= sizeof(Hdr))
|
---|
| 1470 | {
|
---|
| 1471 | __try
|
---|
| 1472 | {
|
---|
| 1473 | RtlCopyMemory(&Hdr, pvInput, sizeof(Hdr));
|
---|
| 1474 | rcNt = STATUS_SUCCESS;
|
---|
| 1475 | }
|
---|
| 1476 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1477 | {
|
---|
| 1478 | rcNt = GetExceptionCode();
|
---|
[62666] | 1479 | Hdr.cbIn = Hdr.cbOut = 0; /* shut up MSC */
|
---|
[51770] | 1480 | }
|
---|
| 1481 | }
|
---|
| 1482 | else
|
---|
[62666] | 1483 | {
|
---|
| 1484 | Hdr.cbIn = Hdr.cbOut = 0; /* shut up MSC */
|
---|
[51770] | 1485 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[62666] | 1486 | }
|
---|
[51770] | 1487 | if (NT_SUCCESS(rcNt))
|
---|
| 1488 | {
|
---|
| 1489 | /* Verify that the sizes in the request header are correct. */
|
---|
| 1490 | ULONG cbBuf = RT_MAX(cbInput, cbOutput);
|
---|
| 1491 | if ( cbInput == Hdr.cbIn
|
---|
| 1492 | && cbOutput == Hdr.cbOut
|
---|
| 1493 | && cbBuf < _1M*16)
|
---|
| 1494 | {
|
---|
| 1495 | /* Allocate a buffer and copy all the input into it. */
|
---|
[76054] | 1496 | PSUPREQHDR pHdr = (PSUPREQHDR)ExAllocatePoolWithTag(g_enmNonPagedPoolType, cbBuf, 'VBox');
|
---|
[51770] | 1497 | if (pHdr)
|
---|
| 1498 | {
|
---|
| 1499 | __try
|
---|
| 1500 | {
|
---|
| 1501 | RtlCopyMemory(pHdr, pvInput, cbInput);
|
---|
| 1502 | if (cbInput < cbBuf)
|
---|
| 1503 | RtlZeroMemory((uint8_t *)pHdr + cbInput, cbBuf - cbInput);
|
---|
[54666] | 1504 | if (!memcmp(pHdr, &Hdr, sizeof(Hdr)))
|
---|
| 1505 | rcNt = STATUS_SUCCESS;
|
---|
| 1506 | else
|
---|
| 1507 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[51770] | 1508 | }
|
---|
| 1509 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1510 | {
|
---|
| 1511 | rcNt = GetExceptionCode();
|
---|
| 1512 | }
|
---|
[54666] | 1513 | if (NT_SUCCESS(rcNt))
|
---|
[51770] | 1514 | {
|
---|
| 1515 | /*
|
---|
[54666] | 1516 | * Now call the common code to do the real work.
|
---|
[51770] | 1517 | */
|
---|
[54666] | 1518 | rc = supdrvIOCtl(uCmd, pDevExt, pSession, pHdr, cbBuf);
|
---|
| 1519 | if (RT_SUCCESS(rc))
|
---|
[51770] | 1520 | {
|
---|
[54666] | 1521 | /*
|
---|
| 1522 | * Copy back the result.
|
---|
| 1523 | */
|
---|
| 1524 | cbOut = pHdr->cbOut;
|
---|
| 1525 | if (cbOut > cbOutput)
|
---|
[51770] | 1526 | {
|
---|
[54666] | 1527 | cbOut = cbOutput;
|
---|
| 1528 | OSDBGPRINT(("VBoxDrvNtFastIoDeviceControl: too much output! %#x > %#x; uCmd=%#x!\n",
|
---|
| 1529 | pHdr->cbOut, cbOut, uCmd));
|
---|
[51770] | 1530 | }
|
---|
[54666] | 1531 | if (cbOut)
|
---|
[51770] | 1532 | {
|
---|
[54666] | 1533 | __try
|
---|
| 1534 | {
|
---|
| 1535 | RtlCopyMemory(pvOutput, pHdr, cbOut);
|
---|
| 1536 | rcNt = STATUS_SUCCESS;
|
---|
| 1537 | }
|
---|
| 1538 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1539 | {
|
---|
| 1540 | rcNt = GetExceptionCode();
|
---|
| 1541 | }
|
---|
[51770] | 1542 | }
|
---|
[54666] | 1543 | else
|
---|
| 1544 | rcNt = STATUS_SUCCESS;
|
---|
[51770] | 1545 | }
|
---|
[54666] | 1546 | else if (rc == VERR_INVALID_PARAMETER)
|
---|
| 1547 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[51770] | 1548 | else
|
---|
[54666] | 1549 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1550 | Log2(("VBoxDrvNtFastIoDeviceControl: returns %#x cbOut=%d rc=%#x\n", rcNt, cbOut, rc));
|
---|
[51770] | 1551 | }
|
---|
| 1552 | else
|
---|
[54666] | 1553 | Log(("VBoxDrvNtFastIoDeviceControl: Error reading %u bytes of user memory at %p (uCmd=%#x)\n",
|
---|
| 1554 | cbInput, pvInput, uCmd));
|
---|
[54664] | 1555 | ExFreePoolWithTag(pHdr, 'VBox');
|
---|
[51770] | 1556 | }
|
---|
[54666] | 1557 | else
|
---|
| 1558 | rcNt = STATUS_NO_MEMORY;
|
---|
[51770] | 1559 | }
|
---|
| 1560 | else
|
---|
| 1561 | {
|
---|
| 1562 | Log(("VBoxDrvNtFastIoDeviceControl: Mismatching sizes (%#x) - Hdr=%#lx/%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1563 | uCmd, Hdr.cbIn, Hdr.cbOut, cbInput, cbOutput));
|
---|
| 1564 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1565 | }
|
---|
| 1566 | }
|
---|
| 1567 | }
|
---|
| 1568 | else
|
---|
| 1569 | {
|
---|
| 1570 | Log(("VBoxDrvNtFastIoDeviceControl: not buffered request (%#x) - not supported\n", uCmd));
|
---|
| 1571 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1572 | }
|
---|
| 1573 | }
|
---|
| 1574 | # ifdef RT_ARCH_AMD64
|
---|
| 1575 | else
|
---|
| 1576 | {
|
---|
| 1577 | Log(("VBoxDrvNtFastIoDeviceControl: WOW64 req - not supported\n"));
|
---|
| 1578 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1579 | }
|
---|
| 1580 | # endif
|
---|
| 1581 |
|
---|
| 1582 | /* complete the request. */
|
---|
| 1583 | pIoStatus->Status = rcNt;
|
---|
| 1584 | pIoStatus->Information = cbOut;
|
---|
| 1585 | supdrvSessionRelease(pSession);
|
---|
| 1586 | return TRUE; /* handled. */
|
---|
[1] | 1587 | }
|
---|
[51770] | 1588 | #endif /* VBOXDRV_WITH_FAST_IO */
|
---|
[1] | 1589 |
|
---|
| 1590 |
|
---|
| 1591 | /**
|
---|
| 1592 | * Device I/O Control entry point.
|
---|
| 1593 | *
|
---|
| 1594 | * @param pDevObj Device object.
|
---|
| 1595 | * @param pIrp Request packet.
|
---|
| 1596 | */
|
---|
[4800] | 1597 | NTSTATUS _stdcall VBoxDrvNtDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1598 | {
|
---|
[53002] | 1599 | VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(pDevObj, pIrp);
|
---|
[51770] | 1600 |
|
---|
[44188] | 1601 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1602 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[51770] | 1603 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1604 | (PSUPDRVSESSION *)&pStack->FileObject->FsContext);
|
---|
[1] | 1605 |
|
---|
[51770] | 1606 | if (!RT_VALID_PTR(pSession))
|
---|
| 1607 | return supdrvNtCompleteRequest(STATUS_TRUST_FAILURE, pIrp);
|
---|
| 1608 |
|
---|
[1] | 1609 | /*
|
---|
[51229] | 1610 | * Deal with the 2-3 high-speed IOCtl that takes their arguments from
|
---|
| 1611 | * the session and iCmd, and does not return anything.
|
---|
[1] | 1612 | */
|
---|
[51770] | 1613 | if (pSession->fUnrestricted)
|
---|
| 1614 | {
|
---|
| 1615 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
| 1616 | if (supdrvNtIsDebuggerAttached())
|
---|
| 1617 | {
|
---|
| 1618 | supdrvSessionRelease(pSession);
|
---|
| 1619 | return supdrvNtCompleteRequest(STATUS_TRUST_FAILURE, pIrp);
|
---|
| 1620 | }
|
---|
| 1621 | #endif
|
---|
| 1622 |
|
---|
[71198] | 1623 | ULONG uCmd = pStack->Parameters.DeviceIoControl.IoControlCode;
|
---|
| 1624 | if ( (uCmd & 3) == METHOD_NEITHER
|
---|
| 1625 | && (uint32_t)((uCmd - SUP_IOCTL_FAST_DO_FIRST) >> 2) < (uint32_t)32)
|
---|
[51770] | 1626 | {
|
---|
[71198] | 1627 | int rc = supdrvIOCtlFast((uCmd - SUP_IOCTL_FAST_DO_FIRST) >> 2,
|
---|
| 1628 | (unsigned)(uintptr_t)pIrp->UserBuffer /* VMCPU id */,
|
---|
| 1629 | pDevExt, pSession);
|
---|
[48132] | 1630 |
|
---|
[51770] | 1631 | /* Complete the I/O request. */
|
---|
| 1632 | supdrvSessionRelease(pSession);
|
---|
| 1633 | return supdrvNtCompleteRequest(RT_SUCCESS(rc) ? STATUS_SUCCESS : STATUS_INVALID_PARAMETER, pIrp);
|
---|
| 1634 | }
|
---|
[1] | 1635 | }
|
---|
[2515] | 1636 |
|
---|
[4800] | 1637 | return VBoxDrvNtDeviceControlSlow(pDevExt, pSession, pIrp, pStack);
|
---|
[2515] | 1638 | }
|
---|
| 1639 |
|
---|
| 1640 |
|
---|
| 1641 | /**
|
---|
[4800] | 1642 | * Worker for VBoxDrvNtDeviceControl that takes the slow IOCtl functions.
|
---|
[2515] | 1643 | *
|
---|
| 1644 | * @returns NT status code.
|
---|
| 1645 | *
|
---|
[58340] | 1646 | * @param pDevExt Device extension.
|
---|
[2515] | 1647 | * @param pSession The session.
|
---|
| 1648 | * @param pIrp Request packet.
|
---|
| 1649 | * @param pStack The stack location containing the DeviceControl parameters.
|
---|
| 1650 | */
|
---|
[4800] | 1651 | static int VBoxDrvNtDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack)
|
---|
[2515] | 1652 | {
|
---|
[4800] | 1653 | NTSTATUS rcNt;
|
---|
[68529] | 1654 | uint32_t cbOut = 0;
|
---|
[2515] | 1655 | int rc = 0;
|
---|
[25465] | 1656 | Log2(("VBoxDrvNtDeviceControlSlow(%p,%p): ioctl=%#x pBuf=%p cbIn=%#x cbOut=%#x pSession=%p\n",
|
---|
| 1657 | pDevExt, pIrp, pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1658 | pIrp->AssociatedIrp.SystemBuffer, pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1659 | pStack->Parameters.DeviceIoControl.OutputBufferLength, pSession));
|
---|
[2515] | 1660 |
|
---|
[3672] | 1661 | #ifdef RT_ARCH_AMD64
|
---|
[2515] | 1662 | /* Don't allow 32-bit processes to do any I/O controls. */
|
---|
| 1663 | if (!IoIs32bitProcess(pIrp))
|
---|
[1] | 1664 | #endif
|
---|
[2515] | 1665 | {
|
---|
| 1666 | /* Verify that it's a buffered CTL. */
|
---|
| 1667 | if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
|
---|
| 1668 | {
|
---|
[4800] | 1669 | /* Verify that the sizes in the request header are correct. */
|
---|
| 1670 | PSUPREQHDR pHdr = (PSUPREQHDR)pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1671 | if ( pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr)
|
---|
| 1672 | && pStack->Parameters.DeviceIoControl.InputBufferLength == pHdr->cbIn
|
---|
| 1673 | && pStack->Parameters.DeviceIoControl.OutputBufferLength == pHdr->cbOut)
|
---|
| 1674 | {
|
---|
[52575] | 1675 | /* Zero extra output bytes to make sure we don't leak anything. */
|
---|
| 1676 | if (pHdr->cbIn < pHdr->cbOut)
|
---|
| 1677 | RtlZeroMemory((uint8_t *)pHdr + pHdr->cbIn, pHdr->cbOut - pHdr->cbIn);
|
---|
| 1678 |
|
---|
[4800] | 1679 | /*
|
---|
| 1680 | * Do the job.
|
---|
| 1681 | */
|
---|
[52575] | 1682 | rc = supdrvIOCtl(pStack->Parameters.DeviceIoControl.IoControlCode, pDevExt, pSession, pHdr,
|
---|
| 1683 | RT_MAX(pHdr->cbIn, pHdr->cbOut));
|
---|
[4800] | 1684 | if (!rc)
|
---|
| 1685 | {
|
---|
| 1686 | rcNt = STATUS_SUCCESS;
|
---|
| 1687 | cbOut = pHdr->cbOut;
|
---|
| 1688 | if (cbOut > pStack->Parameters.DeviceIoControl.OutputBufferLength)
|
---|
| 1689 | {
|
---|
| 1690 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
[68529] | 1691 | OSDBGPRINT(("VBoxDrvNtDeviceControlSlow: too much output! %#x > %#x; uCmd=%#x!\n",
|
---|
[4800] | 1692 | pHdr->cbOut, cbOut, pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
| 1693 | }
|
---|
| 1694 | }
|
---|
| 1695 | else
|
---|
| 1696 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[25465] | 1697 | Log2(("VBoxDrvNtDeviceControlSlow: returns %#x cbOut=%d rc=%#x\n", rcNt, cbOut, rc));
|
---|
[4800] | 1698 | }
|
---|
| 1699 | else
|
---|
| 1700 | {
|
---|
[25465] | 1701 | Log(("VBoxDrvNtDeviceControlSlow: Mismatching sizes (%#x) - Hdr=%#lx/%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1702 | pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1703 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cbIn : 0,
|
---|
| 1704 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cbOut : 0,
|
---|
| 1705 | pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1706 | pStack->Parameters.DeviceIoControl.OutputBufferLength));
|
---|
[4800] | 1707 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1708 | }
|
---|
[2515] | 1709 | }
|
---|
| 1710 | else
|
---|
[4800] | 1711 | {
|
---|
[25465] | 1712 | Log(("VBoxDrvNtDeviceControlSlow: not buffered request (%#x) - not supported\n",
|
---|
| 1713 | pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
[4800] | 1714 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1715 | }
|
---|
[2515] | 1716 | }
|
---|
[3672] | 1717 | #ifdef RT_ARCH_AMD64
|
---|
[2515] | 1718 | else
|
---|
[4800] | 1719 | {
|
---|
[25465] | 1720 | Log(("VBoxDrvNtDeviceControlSlow: WOW64 req - not supported\n"));
|
---|
[4800] | 1721 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1722 | }
|
---|
[2515] | 1723 | #endif
|
---|
[1] | 1724 |
|
---|
| 1725 | /* complete the request. */
|
---|
[2515] | 1726 | pIrp->IoStatus.Status = rcNt;
|
---|
[4800] | 1727 | pIrp->IoStatus.Information = cbOut;
|
---|
[51770] | 1728 | supdrvSessionRelease(pSession);
|
---|
[1] | 1729 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1730 | return rcNt;
|
---|
| 1731 | }
|
---|
| 1732 |
|
---|
| 1733 |
|
---|
| 1734 | /**
|
---|
[10263] | 1735 | * Internal Device I/O Control entry point, used for IDC.
|
---|
| 1736 | *
|
---|
| 1737 | * @param pDevObj Device object.
|
---|
| 1738 | * @param pIrp Request packet.
|
---|
| 1739 | */
|
---|
| 1740 | NTSTATUS _stdcall VBoxDrvNtInternalDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 1741 | {
|
---|
[53002] | 1742 | VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(pDevObj, pIrp);
|
---|
[51770] | 1743 |
|
---|
[44188] | 1744 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1745 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[10263] | 1746 | PFILE_OBJECT pFileObj = pStack ? pStack->FileObject : NULL;
|
---|
| 1747 | PSUPDRVSESSION pSession = pFileObj ? (PSUPDRVSESSION)pFileObj->FsContext : NULL;
|
---|
| 1748 | NTSTATUS rcNt;
|
---|
| 1749 | unsigned cbOut = 0;
|
---|
| 1750 | int rc = 0;
|
---|
[25465] | 1751 | Log2(("VBoxDrvNtInternalDeviceControl(%p,%p): ioctl=%#x pBuf=%p cbIn=%#x cbOut=%#x pSession=%p\n",
|
---|
| 1752 | pDevExt, pIrp, pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1753 | pIrp->AssociatedIrp.SystemBuffer, pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1754 | pStack->Parameters.DeviceIoControl.OutputBufferLength, pSession));
|
---|
[10263] | 1755 |
|
---|
[10265] | 1756 | /* Verify that it's a buffered CTL. */
|
---|
| 1757 | if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
|
---|
[10263] | 1758 | {
|
---|
[10265] | 1759 | /* Verify the pDevExt in the session. */
|
---|
[38321] | 1760 | if ( pStack->Parameters.DeviceIoControl.IoControlCode != SUPDRV_IDC_REQ_CONNECT
|
---|
[90780] | 1761 | ? RT_VALID_PTR(pSession) && pSession->pDevExt == pDevExt
|
---|
[38321] | 1762 | : !pSession
|
---|
| 1763 | )
|
---|
[10263] | 1764 | {
|
---|
| 1765 | /* Verify that the size in the request header is correct. */
|
---|
| 1766 | PSUPDRVIDCREQHDR pHdr = (PSUPDRVIDCREQHDR)pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1767 | if ( pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr)
|
---|
| 1768 | && pStack->Parameters.DeviceIoControl.InputBufferLength == pHdr->cb
|
---|
| 1769 | && pStack->Parameters.DeviceIoControl.OutputBufferLength == pHdr->cb)
|
---|
| 1770 | {
|
---|
| 1771 | /*
|
---|
[41067] | 1772 | * Call the generic code.
|
---|
| 1773 | *
|
---|
| 1774 | * Note! Connect and disconnect requires some extra attention
|
---|
[38323] | 1775 | * in order to get the session handling right.
|
---|
[10263] | 1776 | */
|
---|
[38323] | 1777 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_DISCONNECT)
|
---|
| 1778 | pFileObj->FsContext = NULL;
|
---|
| 1779 |
|
---|
[10263] | 1780 | rc = supdrvIDC(pStack->Parameters.DeviceIoControl.IoControlCode, pDevExt, pSession, pHdr);
|
---|
| 1781 | if (!rc)
|
---|
| 1782 | {
|
---|
[38321] | 1783 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_CONNECT)
|
---|
| 1784 | pFileObj->FsContext = ((PSUPDRVIDCREQCONNECT)pHdr)->u.Out.pSession;
|
---|
| 1785 |
|
---|
[10263] | 1786 | rcNt = STATUS_SUCCESS;
|
---|
| 1787 | cbOut = pHdr->cb;
|
---|
| 1788 | }
|
---|
| 1789 | else
|
---|
[38323] | 1790 | {
|
---|
[10263] | 1791 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[38323] | 1792 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_DISCONNECT)
|
---|
| 1793 | pFileObj->FsContext = pSession;
|
---|
| 1794 | }
|
---|
[25465] | 1795 | Log2(("VBoxDrvNtInternalDeviceControl: returns %#x/rc=%#x\n", rcNt, rc));
|
---|
[10263] | 1796 | }
|
---|
| 1797 | else
|
---|
| 1798 | {
|
---|
[25465] | 1799 | Log(("VBoxDrvNtInternalDeviceControl: Mismatching sizes (%#x) - Hdr=%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1800 | pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1801 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cb : 0,
|
---|
| 1802 | pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1803 | pStack->Parameters.DeviceIoControl.OutputBufferLength));
|
---|
[10263] | 1804 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1805 | }
|
---|
| 1806 | }
|
---|
| 1807 | else
|
---|
| 1808 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1809 | }
|
---|
[10265] | 1810 | else
|
---|
| 1811 | {
|
---|
[25465] | 1812 | Log(("VBoxDrvNtInternalDeviceControl: not buffered request (%#x) - not supported\n",
|
---|
| 1813 | pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
[10265] | 1814 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1815 | }
|
---|
[10263] | 1816 |
|
---|
| 1817 | /* complete the request. */
|
---|
| 1818 | pIrp->IoStatus.Status = rcNt;
|
---|
| 1819 | pIrp->IoStatus.Information = cbOut;
|
---|
| 1820 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1821 | return rcNt;
|
---|
| 1822 | }
|
---|
| 1823 |
|
---|
| 1824 |
|
---|
| 1825 | /**
|
---|
[53002] | 1826 | * Implementation of the read major function for VBoxDrvErrorInfo.
|
---|
| 1827 | *
|
---|
| 1828 | * This is a stub function for the other devices.
|
---|
| 1829 | *
|
---|
| 1830 | * @returns NT status code.
|
---|
| 1831 | * @param pDevObj The device object.
|
---|
| 1832 | * @param pIrp The I/O request packet.
|
---|
| 1833 | */
|
---|
| 1834 | NTSTATUS _stdcall VBoxDrvNtRead(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 1835 | {
|
---|
| 1836 | Log(("VBoxDrvNtRead\n"));
|
---|
[62666] | 1837 | RT_NOREF1(pDevObj);
|
---|
[53002] | 1838 |
|
---|
| 1839 | NTSTATUS rcNt;
|
---|
| 1840 | pIrp->IoStatus.Information = 0;
|
---|
| 1841 |
|
---|
| 1842 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1843 | /*
|
---|
| 1844 | * VBoxDrvErrorInfo?
|
---|
| 1845 | */
|
---|
| 1846 | if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1847 | {
|
---|
| 1848 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
| 1849 | if ( pStack
|
---|
| 1850 | && (pIrp->Flags & IRP_BUFFERED_IO))
|
---|
| 1851 | {
|
---|
| 1852 | /*
|
---|
| 1853 | * Look up the process error information.
|
---|
| 1854 | */
|
---|
| 1855 | HANDLE hCurThreadId = PsGetCurrentThreadId();
|
---|
| 1856 | HANDLE hCurProcessId = PsGetCurrentProcessId();
|
---|
| 1857 | int rc = RTSemMutexRequestNoResume(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 1858 | if (RT_SUCCESS(rc))
|
---|
| 1859 | {
|
---|
[76785] | 1860 | PSUPDRVNTERRORINFO pMatch = NULL;
|
---|
| 1861 | PSUPDRVNTERRORINFO pCur;
|
---|
[53002] | 1862 | RTListForEach(&g_ErrorInfoHead, pCur, SUPDRVNTERRORINFO, ListEntry)
|
---|
| 1863 | {
|
---|
| 1864 | if ( pCur->hProcessId == hCurProcessId
|
---|
| 1865 | && pCur->hThreadId == hCurThreadId)
|
---|
[76785] | 1866 | {
|
---|
| 1867 | pMatch = pCur;
|
---|
[53002] | 1868 | break;
|
---|
[76785] | 1869 | }
|
---|
[53002] | 1870 | }
|
---|
| 1871 |
|
---|
| 1872 | /*
|
---|
| 1873 | * Did we find error info and is the caller requesting data within it?
|
---|
[57201] | 1874 | * If so, check the destination buffer and copy the data into it.
|
---|
[53002] | 1875 | */
|
---|
[76785] | 1876 | if ( pMatch
|
---|
| 1877 | && pStack->Parameters.Read.ByteOffset.QuadPart < pMatch->cchErrorInfo
|
---|
[53002] | 1878 | && pStack->Parameters.Read.ByteOffset.QuadPart >= 0)
|
---|
| 1879 | {
|
---|
| 1880 | PVOID pvDstBuf = pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1881 | if (pvDstBuf)
|
---|
| 1882 | {
|
---|
| 1883 | uint32_t offRead = (uint32_t)pStack->Parameters.Read.ByteOffset.QuadPart;
|
---|
[76785] | 1884 | uint32_t cbToRead = pMatch->cchErrorInfo - offRead;
|
---|
[57201] | 1885 | if (cbToRead < pStack->Parameters.Read.Length)
|
---|
| 1886 | RT_BZERO((uint8_t *)pvDstBuf + cbToRead, pStack->Parameters.Read.Length - cbToRead);
|
---|
| 1887 | else
|
---|
[53002] | 1888 | cbToRead = pStack->Parameters.Read.Length;
|
---|
[76785] | 1889 | memcpy(pvDstBuf, &pMatch->szErrorInfo[offRead], cbToRead);
|
---|
[53002] | 1890 | pIrp->IoStatus.Information = cbToRead;
|
---|
| 1891 |
|
---|
| 1892 | rcNt = STATUS_SUCCESS;
|
---|
| 1893 | }
|
---|
| 1894 | else
|
---|
| 1895 | rcNt = STATUS_INVALID_ADDRESS;
|
---|
| 1896 | }
|
---|
| 1897 | /*
|
---|
| 1898 | * End of file. Free the info.
|
---|
| 1899 | */
|
---|
[76785] | 1900 | else if (pMatch)
|
---|
[53002] | 1901 | {
|
---|
[76785] | 1902 | RTListNodeRemove(&pMatch->ListEntry);
|
---|
| 1903 | RTMemFree(pMatch);
|
---|
[53002] | 1904 | rcNt = STATUS_END_OF_FILE;
|
---|
| 1905 | }
|
---|
| 1906 | /*
|
---|
| 1907 | * We found no error info. Return EOF.
|
---|
| 1908 | */
|
---|
| 1909 | else
|
---|
| 1910 | rcNt = STATUS_END_OF_FILE;
|
---|
| 1911 |
|
---|
| 1912 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 1913 | }
|
---|
| 1914 | else
|
---|
| 1915 | rcNt = STATUS_UNSUCCESSFUL;
|
---|
[57201] | 1916 |
|
---|
| 1917 | /* Paranoia: Clear the buffer on failure. */
|
---|
| 1918 | if (!NT_SUCCESS(rcNt))
|
---|
| 1919 | {
|
---|
| 1920 | PVOID pvDstBuf = pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1921 | if ( pvDstBuf
|
---|
| 1922 | && pStack->Parameters.Read.Length)
|
---|
| 1923 | RT_BZERO(pvDstBuf, pStack->Parameters.Read.Length);
|
---|
| 1924 | }
|
---|
[53002] | 1925 | }
|
---|
| 1926 | else
|
---|
| 1927 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1928 | }
|
---|
| 1929 | else
|
---|
| 1930 | #endif /* VBOX_WITH_HARDENING */
|
---|
| 1931 | {
|
---|
| 1932 | /*
|
---|
| 1933 | * Stub.
|
---|
| 1934 | */
|
---|
| 1935 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1936 | }
|
---|
| 1937 |
|
---|
| 1938 | /*
|
---|
| 1939 | * Complete the request.
|
---|
| 1940 | */
|
---|
| 1941 | pIrp->IoStatus.Status = rcNt;
|
---|
| 1942 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1943 | return rcNt;
|
---|
| 1944 | }
|
---|
| 1945 |
|
---|
| 1946 |
|
---|
| 1947 | /**
|
---|
[1] | 1948 | * Stub function for functions we don't implemented.
|
---|
| 1949 | *
|
---|
| 1950 | * @returns STATUS_NOT_SUPPORTED
|
---|
| 1951 | * @param pDevObj Device object.
|
---|
| 1952 | * @param pIrp IRP.
|
---|
| 1953 | */
|
---|
[4800] | 1954 | NTSTATUS _stdcall VBoxDrvNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1955 | {
|
---|
[25465] | 1956 | Log(("VBoxDrvNtNotSupportedStub\n"));
|
---|
[44188] | 1957 | NOREF(pDevObj);
|
---|
[1] | 1958 |
|
---|
| 1959 | pIrp->IoStatus.Information = 0;
|
---|
| 1960 | pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
|
---|
| 1961 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1962 |
|
---|
| 1963 | return STATUS_NOT_SUPPORTED;
|
---|
| 1964 | }
|
---|
| 1965 |
|
---|
| 1966 |
|
---|
| 1967 | /**
|
---|
[13495] | 1968 | * ExRegisterCallback handler for power events
|
---|
| 1969 | *
|
---|
| 1970 | * @param pCallbackContext User supplied parameter (pDevObj)
|
---|
[62666] | 1971 | * @param pvArgument1 First argument
|
---|
| 1972 | * @param pvArgument2 Second argument
|
---|
[13495] | 1973 | */
|
---|
[62666] | 1974 | VOID _stdcall VBoxPowerDispatchCallback(PVOID pCallbackContext, PVOID pvArgument1, PVOID pvArgument2)
|
---|
[13495] | 1975 | {
|
---|
[62666] | 1976 | /*PDEVICE_OBJECT pDevObj = (PDEVICE_OBJECT)pCallbackContext;*/ RT_NOREF1(pCallbackContext);
|
---|
| 1977 | Log(("VBoxPowerDispatchCallback: %x %x\n", pvArgument1, pvArgument2));
|
---|
[13495] | 1978 |
|
---|
| 1979 | /* Power change imminent? */
|
---|
[62666] | 1980 | if ((uintptr_t)pvArgument1 == PO_CB_SYSTEM_STATE_LOCK)
|
---|
[13495] | 1981 | {
|
---|
[62666] | 1982 | if (pvArgument2 == NULL)
|
---|
[25465] | 1983 | Log(("VBoxPowerDispatchCallback: about to go into suspend mode!\n"));
|
---|
[13495] | 1984 | else
|
---|
[25465] | 1985 | Log(("VBoxPowerDispatchCallback: resumed!\n"));
|
---|
[13496] | 1986 |
|
---|
| 1987 | /* Inform any clients that have registered themselves with IPRT. */
|
---|
[62666] | 1988 | RTPowerSignalEvent(pvArgument2 == NULL ? RTPOWEREVENT_SUSPEND : RTPOWEREVENT_RESUME);
|
---|
[13495] | 1989 | }
|
---|
| 1990 | }
|
---|
| 1991 |
|
---|
| 1992 |
|
---|
| 1993 | /**
|
---|
[51770] | 1994 | * Called to clean up the session structure before it's freed.
|
---|
| 1995 | *
|
---|
| 1996 | * @param pDevExt The device globals.
|
---|
| 1997 | * @param pSession The session that's being cleaned up.
|
---|
| 1998 | */
|
---|
| 1999 | void VBOXCALL supdrvOSCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
|
---|
| 2000 | {
|
---|
| 2001 | #ifdef VBOX_WITH_HARDENING
|
---|
| 2002 | if (pSession->pNtProtect)
|
---|
| 2003 | {
|
---|
| 2004 | supdrvNtProtectRelease(pSession->pNtProtect);
|
---|
| 2005 | pSession->pNtProtect = NULL;
|
---|
| 2006 | }
|
---|
[62667] | 2007 | RT_NOREF1(pDevExt);
|
---|
[62666] | 2008 | #else
|
---|
| 2009 | RT_NOREF2(pDevExt, pSession);
|
---|
[51770] | 2010 | #endif
|
---|
[91559] | 2011 | #ifdef VBOXDRV_WITH_SID_TO_UID_MAPPING
|
---|
| 2012 | if (pSession->pNtUserId)
|
---|
| 2013 | {
|
---|
| 2014 | supdrvNtUserIdRelease(pSession->pNtUserId);
|
---|
| 2015 | pSession->pNtUserId = NULL;
|
---|
| 2016 | }
|
---|
| 2017 | #endif
|
---|
[51770] | 2018 | }
|
---|
| 2019 |
|
---|
| 2020 |
|
---|
| 2021 | void VBOXCALL supdrvOSSessionHashTabInserted(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
|
---|
| 2022 | {
|
---|
| 2023 | NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
|
---|
| 2024 | }
|
---|
| 2025 |
|
---|
| 2026 |
|
---|
| 2027 | void VBOXCALL supdrvOSSessionHashTabRemoved(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
|
---|
| 2028 | {
|
---|
| 2029 | NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
|
---|
| 2030 | }
|
---|
| 2031 |
|
---|
| 2032 |
|
---|
[64281] | 2033 | size_t VBOXCALL supdrvOSGipGetGroupTableSize(PSUPDRVDEVEXT pDevExt)
|
---|
[64255] | 2034 | {
|
---|
| 2035 | NOREF(pDevExt);
|
---|
[64281] | 2036 | uint32_t cMaxCpus = RTMpGetCount();
|
---|
| 2037 | uint32_t cGroups = RTMpGetMaxCpuGroupCount();
|
---|
[64255] | 2038 |
|
---|
[73097] | 2039 | return cGroups * RT_UOFFSETOF(SUPGIPCPUGROUP, aiCpuSetIdxs)
|
---|
[64281] | 2040 | + RT_SIZEOFMEMB(SUPGIPCPUGROUP, aiCpuSetIdxs[0]) * cMaxCpus;
|
---|
| 2041 | }
|
---|
| 2042 |
|
---|
| 2043 |
|
---|
| 2044 | int VBOXCALL supdrvOSInitGipGroupTable(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, size_t cbGipCpuGroups)
|
---|
| 2045 | {
|
---|
| 2046 | Assert(cbGipCpuGroups > 0); NOREF(cbGipCpuGroups); NOREF(pDevExt);
|
---|
| 2047 |
|
---|
| 2048 | unsigned const cGroups = RTMpGetMaxCpuGroupCount();
|
---|
| 2049 | AssertReturn(cGroups > 0 && cGroups < RT_ELEMENTS(pGip->aoffCpuGroup), VERR_INTERNAL_ERROR_2);
|
---|
| 2050 | pGip->cPossibleCpuGroups = cGroups;
|
---|
| 2051 |
|
---|
| 2052 | PSUPGIPCPUGROUP pGroup = (PSUPGIPCPUGROUP)&pGip->aCPUs[pGip->cCpus];
|
---|
| 2053 | for (uint32_t idxGroup = 0; idxGroup < cGroups; idxGroup++)
|
---|
[64255] | 2054 | {
|
---|
[81106] | 2055 | uint32_t cActive = 0;
|
---|
| 2056 | uint32_t const cMax = RTMpGetCpuGroupCounts(idxGroup, &cActive);
|
---|
| 2057 | uint32_t const cbNeeded = RT_UOFFSETOF_DYN(SUPGIPCPUGROUP, aiCpuSetIdxs[cMax]);
|
---|
| 2058 | uintptr_t const offGroup = (uintptr_t)pGroup - (uintptr_t)pGip;
|
---|
[64281] | 2059 | AssertReturn(cbNeeded <= cbGipCpuGroups, VERR_INTERNAL_ERROR_3);
|
---|
| 2060 | AssertReturn(cActive <= cMax, VERR_INTERNAL_ERROR_4);
|
---|
[81106] | 2061 | AssertReturn(offGroup == (uint32_t)offGroup, VERR_INTERNAL_ERROR_5);
|
---|
[64255] | 2062 |
|
---|
[81106] | 2063 | pGip->aoffCpuGroup[idxGroup] = offGroup;
|
---|
[64281] | 2064 | pGroup->cMembers = cActive;
|
---|
| 2065 | pGroup->cMaxMembers = cMax;
|
---|
| 2066 | for (uint32_t idxMember = 0; idxMember < cMax; idxMember++)
|
---|
[64255] | 2067 | {
|
---|
[64281] | 2068 | pGroup->aiCpuSetIdxs[idxMember] = RTMpSetIndexFromCpuGroupMember(idxGroup, idxMember);
|
---|
| 2069 | Assert((unsigned)pGroup->aiCpuSetIdxs[idxMember] < pGip->cPossibleCpus);
|
---|
[64255] | 2070 | }
|
---|
[64281] | 2071 |
|
---|
| 2072 | /* advance. */
|
---|
| 2073 | cbGipCpuGroups -= cbNeeded;
|
---|
| 2074 | pGroup = (PSUPGIPCPUGROUP)&pGroup->aiCpuSetIdxs[cMax];
|
---|
[64255] | 2075 | }
|
---|
| 2076 |
|
---|
[64281] | 2077 | return VINF_SUCCESS;
|
---|
[64255] | 2078 | }
|
---|
| 2079 |
|
---|
| 2080 |
|
---|
[64281] | 2081 | void VBOXCALL supdrvOSGipInitGroupBitsForCpu(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pGipCpu)
|
---|
[64255] | 2082 | {
|
---|
| 2083 | NOREF(pDevExt);
|
---|
| 2084 |
|
---|
| 2085 | /*
|
---|
[64281] | 2086 | * Translate the CPU index into a group and member.
|
---|
[64255] | 2087 | */
|
---|
[83802] | 2088 | PROCESSOR_NUMBER ProcNum = { 0, (UCHAR)pGipCpu->iCpuSet, 0 };
|
---|
[64255] | 2089 | if (g_pfnKeGetProcessorNumberFromIndex)
|
---|
| 2090 | {
|
---|
[64281] | 2091 | NTSTATUS rcNt = g_pfnKeGetProcessorNumberFromIndex(pGipCpu->iCpuSet, &ProcNum);
|
---|
[64255] | 2092 | if (NT_SUCCESS(rcNt))
|
---|
[64281] | 2093 | Assert(ProcNum.Group < g_pfnKeQueryMaximumGroupCount());
|
---|
| 2094 | else
|
---|
[64255] | 2095 | {
|
---|
[64281] | 2096 | AssertFailed();
|
---|
| 2097 | ProcNum.Group = 0;
|
---|
| 2098 | ProcNum.Number = pGipCpu->iCpuSet;
|
---|
[64255] | 2099 | }
|
---|
| 2100 | }
|
---|
[64281] | 2101 | pGipCpu->iCpuGroup = ProcNum.Group;
|
---|
| 2102 | pGipCpu->iCpuGroupMember = ProcNum.Number;
|
---|
[64255] | 2103 |
|
---|
[64281] | 2104 | /*
|
---|
| 2105 | * Update the group info. Just do this wholesale for now (doesn't scale well).
|
---|
| 2106 | */
|
---|
| 2107 | for (uint32_t idxGroup = 0; idxGroup < pGip->cPossibleCpuGroups; idxGroup++)
|
---|
[81106] | 2108 | {
|
---|
| 2109 | uint32_t offGroup = pGip->aoffCpuGroup[idxGroup];
|
---|
| 2110 | if (offGroup != UINT32_MAX)
|
---|
[64281] | 2111 | {
|
---|
[81106] | 2112 | PSUPGIPCPUGROUP pGroup = (PSUPGIPCPUGROUP)((uintptr_t)pGip + offGroup);
|
---|
| 2113 | uint32_t cActive = 0;
|
---|
| 2114 | uint32_t cMax = RTMpGetCpuGroupCounts(idxGroup, &cActive);
|
---|
[64281] | 2115 |
|
---|
| 2116 | AssertStmt(cMax == pGroup->cMaxMembers, cMax = pGroup->cMaxMembers);
|
---|
| 2117 | AssertStmt(cActive <= cMax, cActive = cMax);
|
---|
| 2118 | if (pGroup->cMembers != cActive)
|
---|
[81106] | 2119 | ASMAtomicWriteU16(&pGroup->cMembers, cActive);
|
---|
[64281] | 2120 |
|
---|
| 2121 | for (uint32_t idxMember = 0; idxMember < cMax; idxMember++)
|
---|
| 2122 | {
|
---|
| 2123 | int idxCpuSet = RTMpSetIndexFromCpuGroupMember(idxGroup, idxMember);
|
---|
| 2124 | AssertMsg((unsigned)idxCpuSet < pGip->cPossibleCpus,
|
---|
| 2125 | ("%d vs %d for %u.%u\n", idxCpuSet, pGip->cPossibleCpus, idxGroup, idxMember));
|
---|
| 2126 |
|
---|
| 2127 | if (pGroup->aiCpuSetIdxs[idxMember] != idxCpuSet)
|
---|
[81106] | 2128 | ASMAtomicWriteS16(&pGroup->aiCpuSetIdxs[idxMember], idxCpuSet);
|
---|
[64281] | 2129 | }
|
---|
| 2130 | }
|
---|
[81106] | 2131 | }
|
---|
[64255] | 2132 | }
|
---|
| 2133 |
|
---|
| 2134 |
|
---|
[51770] | 2135 | /**
|
---|
[1] | 2136 | * Initializes any OS specific object creator fields.
|
---|
| 2137 | */
|
---|
| 2138 | void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
|
---|
| 2139 | {
|
---|
| 2140 | NOREF(pObj);
|
---|
| 2141 | NOREF(pSession);
|
---|
| 2142 | }
|
---|
| 2143 |
|
---|
| 2144 |
|
---|
| 2145 | /**
|
---|
| 2146 | * Checks if the session can access the object.
|
---|
| 2147 | *
|
---|
| 2148 | * @returns true if a decision has been made.
|
---|
| 2149 | * @returns false if the default access policy should be applied.
|
---|
| 2150 | *
|
---|
| 2151 | * @param pObj The object in question.
|
---|
| 2152 | * @param pSession The session wanting to access the object.
|
---|
| 2153 | * @param pszObjName The object name, can be NULL.
|
---|
| 2154 | * @param prc Where to store the result when returning true.
|
---|
| 2155 | */
|
---|
| 2156 | bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
|
---|
| 2157 | {
|
---|
| 2158 | NOREF(pObj);
|
---|
| 2159 | NOREF(pSession);
|
---|
| 2160 | NOREF(pszObjName);
|
---|
| 2161 | NOREF(prc);
|
---|
| 2162 | return false;
|
---|
| 2163 | }
|
---|
| 2164 |
|
---|
[9587] | 2165 |
|
---|
[7206] | 2166 | /**
|
---|
[1850] | 2167 | * Force async tsc mode (stub).
|
---|
| 2168 | */
|
---|
[8789] | 2169 | bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
|
---|
[1850] | 2170 | {
|
---|
[62666] | 2171 | RT_NOREF1(pDevExt);
|
---|
[64255] | 2172 | return g_Options.fOptForceAsyncTsc != 0;
|
---|
[1850] | 2173 | }
|
---|
| 2174 |
|
---|
| 2175 |
|
---|
[53396] | 2176 | /**
|
---|
[54581] | 2177 | * Whether the host takes CPUs offline during a suspend/resume operation.
|
---|
| 2178 | */
|
---|
| 2179 | bool VBOXCALL supdrvOSAreCpusOfflinedOnSuspend(void)
|
---|
| 2180 | {
|
---|
| 2181 | return false;
|
---|
| 2182 | }
|
---|
| 2183 |
|
---|
| 2184 |
|
---|
| 2185 | /**
|
---|
[53396] | 2186 | * Whether the hardware TSC has been synchronized by the OS.
|
---|
| 2187 | */
|
---|
| 2188 | bool VBOXCALL supdrvOSAreTscDeltasInSync(void)
|
---|
| 2189 | {
|
---|
[54412] | 2190 | /* If IPRT didn't find KeIpiGenericCall we pretend windows(, the firmware,
|
---|
| 2191 | or whoever) always configures TSCs perfectly. */
|
---|
| 2192 | return !RTMpOnPairIsConcurrentExecSupported();
|
---|
[53396] | 2193 | }
|
---|
| 2194 |
|
---|
| 2195 |
|
---|
[25262] | 2196 | #define MY_SystemLoadGdiDriverInSystemSpaceInformation 54
|
---|
| 2197 | #define MY_SystemUnloadGdiDriverInformation 27
|
---|
| 2198 |
|
---|
| 2199 | typedef struct MYSYSTEMGDIDRIVERINFO
|
---|
| 2200 | {
|
---|
| 2201 | UNICODE_STRING Name; /**< In: image file name. */
|
---|
| 2202 | PVOID ImageAddress; /**< Out: the load address. */
|
---|
| 2203 | PVOID SectionPointer; /**< Out: section object. */
|
---|
| 2204 | PVOID EntryPointer; /**< Out: entry point address. */
|
---|
| 2205 | PVOID ExportSectionPointer; /**< Out: export directory/section. */
|
---|
| 2206 | ULONG ImageLength; /**< Out: SizeOfImage. */
|
---|
| 2207 | } MYSYSTEMGDIDRIVERINFO;
|
---|
| 2208 |
|
---|
| 2209 | extern "C" __declspec(dllimport) NTSTATUS NTAPI ZwSetSystemInformation(ULONG, PVOID, ULONG);
|
---|
| 2210 |
|
---|
[25258] | 2211 | int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
|
---|
| 2212 | {
|
---|
[25308] | 2213 | pImage->pvNtSectionObj = NULL;
|
---|
| 2214 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 2215 |
|
---|
[25300] | 2216 | #ifdef VBOX_WITHOUT_NATIVE_R0_LOADER
|
---|
[25336] | 2217 | # ifndef RT_ARCH_X86
|
---|
| 2218 | # error "VBOX_WITHOUT_NATIVE_R0_LOADER is only safe on x86."
|
---|
| 2219 | # endif
|
---|
[25300] | 2220 | NOREF(pDevExt); NOREF(pszFilename); NOREF(pImage);
|
---|
| 2221 | return VERR_NOT_SUPPORTED;
|
---|
[25262] | 2222 |
|
---|
[25300] | 2223 | #else
|
---|
| 2224 | /*
|
---|
| 2225 | * Convert the filename from DOS UTF-8 to NT UTF-16.
|
---|
| 2226 | */
|
---|
| 2227 | size_t cwcFilename;
|
---|
| 2228 | int rc = RTStrCalcUtf16LenEx(pszFilename, RTSTR_MAX, &cwcFilename);
|
---|
| 2229 | if (RT_FAILURE(rc))
|
---|
| 2230 | return rc;
|
---|
| 2231 |
|
---|
| 2232 | PRTUTF16 pwcsFilename = (PRTUTF16)RTMemTmpAlloc((4 + cwcFilename + 1) * sizeof(RTUTF16));
|
---|
| 2233 | if (!pwcsFilename)
|
---|
| 2234 | return VERR_NO_TMP_MEMORY;
|
---|
| 2235 |
|
---|
| 2236 | pwcsFilename[0] = '\\';
|
---|
| 2237 | pwcsFilename[1] = '?';
|
---|
| 2238 | pwcsFilename[2] = '?';
|
---|
| 2239 | pwcsFilename[3] = '\\';
|
---|
| 2240 | PRTUTF16 pwcsTmp = &pwcsFilename[4];
|
---|
| 2241 | rc = RTStrToUtf16Ex(pszFilename, RTSTR_MAX, &pwcsTmp, cwcFilename + 1, NULL);
|
---|
| 2242 | if (RT_SUCCESS(rc))
|
---|
[25262] | 2243 | {
|
---|
[25300] | 2244 | /*
|
---|
| 2245 | * Try load it.
|
---|
| 2246 | */
|
---|
| 2247 | MYSYSTEMGDIDRIVERINFO Info;
|
---|
| 2248 | RtlInitUnicodeString(&Info.Name, pwcsFilename);
|
---|
| 2249 | Info.ImageAddress = NULL;
|
---|
| 2250 | Info.SectionPointer = NULL;
|
---|
| 2251 | Info.EntryPointer = NULL;
|
---|
| 2252 | Info.ExportSectionPointer = NULL;
|
---|
| 2253 | Info.ImageLength = 0;
|
---|
[25262] | 2254 |
|
---|
[25300] | 2255 | NTSTATUS rcNt = ZwSetSystemInformation(MY_SystemLoadGdiDriverInSystemSpaceInformation, &Info, sizeof(Info));
|
---|
| 2256 | if (NT_SUCCESS(rcNt))
|
---|
| 2257 | {
|
---|
| 2258 | pImage->pvImage = Info.ImageAddress;
|
---|
| 2259 | pImage->pvNtSectionObj = Info.SectionPointer;
|
---|
| 2260 | Log(("ImageAddress=%p SectionPointer=%p ImageLength=%#x cbImageBits=%#x rcNt=%#x '%ls'\n",
|
---|
| 2261 | Info.ImageAddress, Info.SectionPointer, Info.ImageLength, pImage->cbImageBits, rcNt, Info.Name.Buffer));
|
---|
| 2262 | # ifdef DEBUG_bird
|
---|
[75003] | 2263 | SUPR0Printf("ImageAddress=%p SectionPointer=%p ImageLength=%#x cbImageBits=%#x rcNt=%#x '%ls'\n",
|
---|
[25300] | 2264 | Info.ImageAddress, Info.SectionPointer, Info.ImageLength, pImage->cbImageBits, rcNt, Info.Name.Buffer);
|
---|
| 2265 | # endif
|
---|
| 2266 | if (pImage->cbImageBits == Info.ImageLength)
|
---|
| 2267 | {
|
---|
[25308] | 2268 | /*
|
---|
| 2269 | * Lock down the entire image, just to be on the safe side.
|
---|
| 2270 | */
|
---|
| 2271 | rc = RTR0MemObjLockKernel(&pImage->hMemLock, pImage->pvImage, pImage->cbImageBits, RTMEM_PROT_READ);
|
---|
| 2272 | if (RT_FAILURE(rc))
|
---|
| 2273 | {
|
---|
| 2274 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 2275 | supdrvOSLdrUnload(pDevExt, pImage);
|
---|
| 2276 | }
|
---|
[25300] | 2277 | }
|
---|
| 2278 | else
|
---|
| 2279 | {
|
---|
| 2280 | supdrvOSLdrUnload(pDevExt, pImage);
|
---|
| 2281 | rc = VERR_LDR_MISMATCH_NATIVE;
|
---|
| 2282 | }
|
---|
| 2283 | }
|
---|
| 2284 | else
|
---|
| 2285 | {
|
---|
[28659] | 2286 | Log(("rcNt=%#x '%ls'\n", rcNt, pwcsFilename));
|
---|
[28661] | 2287 | SUPR0Printf("VBoxDrv: rcNt=%x '%ws'\n", rcNt, pwcsFilename);
|
---|
[25300] | 2288 | switch (rcNt)
|
---|
| 2289 | {
|
---|
| 2290 | case /* 0xc0000003 */ STATUS_INVALID_INFO_CLASS:
|
---|
[25336] | 2291 | # ifdef RT_ARCH_AMD64
|
---|
| 2292 | /* Unwind will crash and BSOD, so no fallback here! */
|
---|
| 2293 | rc = VERR_NOT_IMPLEMENTED;
|
---|
| 2294 | # else
|
---|
[25300] | 2295 | /*
|
---|
[25336] | 2296 | * Use the old way of loading the modules.
|
---|
[25300] | 2297 | *
|
---|
[25336] | 2298 | * Note! We do *NOT* try class 26 because it will probably
|
---|
| 2299 | * not work correctly on terminal servers and such.
|
---|
[25300] | 2300 | */
|
---|
| 2301 | rc = VERR_NOT_SUPPORTED;
|
---|
| 2302 | # endif
|
---|
| 2303 | break;
|
---|
| 2304 | case /* 0xc0000034 */ STATUS_OBJECT_NAME_NOT_FOUND:
|
---|
| 2305 | rc = VERR_MODULE_NOT_FOUND;
|
---|
| 2306 | break;
|
---|
| 2307 | case /* 0xC0000263 */ STATUS_DRIVER_ENTRYPOINT_NOT_FOUND:
|
---|
| 2308 | rc = VERR_LDR_IMPORTED_SYMBOL_NOT_FOUND;
|
---|
| 2309 | break;
|
---|
[51770] | 2310 | case /* 0xC0000428 */ STATUS_INVALID_IMAGE_HASH:
|
---|
[25360] | 2311 | rc = VERR_LDR_IMAGE_HASH;
|
---|
| 2312 | break;
|
---|
[51770] | 2313 | case /* 0xC000010E */ STATUS_IMAGE_ALREADY_LOADED:
|
---|
[41774] | 2314 | Log(("WARNING: see @bugref{4853} for cause of this failure on Windows 7 x64\n"));
|
---|
[28661] | 2315 | rc = VERR_ALREADY_LOADED;
|
---|
| 2316 | break;
|
---|
[25300] | 2317 | default:
|
---|
| 2318 | rc = VERR_LDR_GENERAL_FAILURE;
|
---|
| 2319 | break;
|
---|
| 2320 | }
|
---|
[25262] | 2321 |
|
---|
[25300] | 2322 | pImage->pvNtSectionObj = NULL;
|
---|
| 2323 | }
|
---|
[25262] | 2324 | }
|
---|
| 2325 |
|
---|
[25300] | 2326 | RTMemTmpFree(pwcsFilename);
|
---|
| 2327 | NOREF(pDevExt);
|
---|
| 2328 | return rc;
|
---|
[25278] | 2329 | #endif
|
---|
[25258] | 2330 | }
|
---|
| 2331 |
|
---|
| 2332 |
|
---|
[58872] | 2333 | void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
|
---|
[41067] | 2334 | {
|
---|
[58872] | 2335 | NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
|
---|
[41067] | 2336 | }
|
---|
| 2337 |
|
---|
[75282] | 2338 |
|
---|
[58875] | 2339 | void VBOXCALL supdrvOSLdrNotifyUnloaded(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2340 | {
|
---|
| 2341 | NOREF(pDevExt); NOREF(pImage);
|
---|
| 2342 | }
|
---|
[41067] | 2343 |
|
---|
[75282] | 2344 |
|
---|
| 2345 | /**
|
---|
| 2346 | * Common worker for supdrvOSLdrQuerySymbol and supdrvOSLdrValidatePointer.
|
---|
| 2347 | *
|
---|
| 2348 | * @note Similar code in rtR0DbgKrnlNtParseModule.
|
---|
[75003] | 2349 | */
|
---|
[75282] | 2350 | static int supdrvOSLdrValidatePointerOrQuerySymbol(PSUPDRVLDRIMAGE pImage, void *pv, const char *pszSymbol,
|
---|
| 2351 | size_t cchSymbol, void **ppvSymbol)
|
---|
[25258] | 2352 | {
|
---|
[75003] | 2353 | AssertReturn(pImage->pvNtSectionObj, VERR_INVALID_STATE);
|
---|
[75282] | 2354 | Assert(pszSymbol || !ppvSymbol);
|
---|
[75003] | 2355 |
|
---|
| 2356 | /*
|
---|
| 2357 | * Locate the export directory in the loaded image.
|
---|
| 2358 | */
|
---|
| 2359 | uint8_t const *pbMapping = (uint8_t const *)pImage->pvImage;
|
---|
| 2360 | uint32_t const cbMapping = pImage->cbImageBits;
|
---|
| 2361 | uint32_t const uRvaToValidate = (uint32_t)((uintptr_t)pv - (uintptr_t)pbMapping);
|
---|
[75282] | 2362 | AssertReturn(uRvaToValidate < cbMapping || ppvSymbol, VERR_INTERNAL_ERROR_3);
|
---|
[75003] | 2363 |
|
---|
| 2364 | uint32_t const offNtHdrs = *(uint16_t *)pbMapping == IMAGE_DOS_SIGNATURE
|
---|
| 2365 | ? ((IMAGE_DOS_HEADER const *)pbMapping)->e_lfanew
|
---|
| 2366 | : 0;
|
---|
| 2367 | AssertLogRelReturn(offNtHdrs + sizeof(IMAGE_NT_HEADERS) < cbMapping, VERR_INTERNAL_ERROR_5);
|
---|
| 2368 |
|
---|
| 2369 | IMAGE_NT_HEADERS const *pNtHdrs = (IMAGE_NT_HEADERS const *)((uintptr_t)pbMapping + offNtHdrs);
|
---|
| 2370 | AssertLogRelReturn(pNtHdrs->Signature == IMAGE_NT_SIGNATURE, VERR_INVALID_EXE_SIGNATURE);
|
---|
| 2371 | AssertLogRelReturn(pNtHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR_MAGIC, VERR_BAD_EXE_FORMAT);
|
---|
| 2372 | AssertLogRelReturn(pNtHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES, VERR_BAD_EXE_FORMAT);
|
---|
| 2373 |
|
---|
| 2374 | uint32_t const offEndSectHdrs = offNtHdrs
|
---|
| 2375 | + sizeof(*pNtHdrs)
|
---|
| 2376 | + pNtHdrs->FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
|
---|
| 2377 | AssertReturn(offEndSectHdrs < cbMapping, VERR_BAD_EXE_FORMAT);
|
---|
| 2378 |
|
---|
| 2379 | /*
|
---|
| 2380 | * Find the export directory.
|
---|
| 2381 | */
|
---|
| 2382 | IMAGE_DATA_DIRECTORY ExpDir = pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT];
|
---|
| 2383 | if (!ExpDir.Size)
|
---|
| 2384 | {
|
---|
| 2385 | SUPR0Printf("SUPDrv: No exports in %s!\n", pImage->szName);
|
---|
[75282] | 2386 | return ppvSymbol ? VERR_SYMBOL_NOT_FOUND : VERR_NOT_FOUND;
|
---|
[75003] | 2387 | }
|
---|
| 2388 | AssertReturn( ExpDir.Size >= sizeof(IMAGE_EXPORT_DIRECTORY)
|
---|
| 2389 | && ExpDir.VirtualAddress >= offEndSectHdrs
|
---|
| 2390 | && ExpDir.VirtualAddress < cbMapping
|
---|
| 2391 | && ExpDir.VirtualAddress + ExpDir.Size <= cbMapping, VERR_BAD_EXE_FORMAT);
|
---|
| 2392 |
|
---|
| 2393 | IMAGE_EXPORT_DIRECTORY const *pExpDir = (IMAGE_EXPORT_DIRECTORY const *)&pbMapping[ExpDir.VirtualAddress];
|
---|
| 2394 |
|
---|
| 2395 | uint32_t const cNamedExports = pExpDir->NumberOfNames;
|
---|
| 2396 | AssertReturn(cNamedExports < _1M, VERR_BAD_EXE_FORMAT);
|
---|
| 2397 | AssertReturn(pExpDir->NumberOfFunctions < _1M, VERR_BAD_EXE_FORMAT);
|
---|
| 2398 | if (pExpDir->NumberOfFunctions == 0 || cNamedExports == 0)
|
---|
| 2399 | {
|
---|
| 2400 | SUPR0Printf("SUPDrv: No exports in %s!\n", pImage->szName);
|
---|
[75282] | 2401 | return ppvSymbol ? VERR_SYMBOL_NOT_FOUND : VERR_NOT_FOUND;
|
---|
[75003] | 2402 | }
|
---|
| 2403 |
|
---|
| 2404 | uint32_t const cExports = RT_MAX(cNamedExports, pExpDir->NumberOfFunctions);
|
---|
| 2405 |
|
---|
| 2406 | AssertReturn( pExpDir->AddressOfFunctions >= offEndSectHdrs
|
---|
| 2407 | && pExpDir->AddressOfFunctions < cbMapping
|
---|
| 2408 | && pExpDir->AddressOfFunctions + cExports * sizeof(uint32_t) <= cbMapping,
|
---|
| 2409 | VERR_BAD_EXE_FORMAT);
|
---|
| 2410 | uint32_t const * const paoffExports = (uint32_t const *)&pbMapping[pExpDir->AddressOfFunctions];
|
---|
| 2411 |
|
---|
| 2412 | AssertReturn( pExpDir->AddressOfNames >= offEndSectHdrs
|
---|
| 2413 | && pExpDir->AddressOfNames < cbMapping
|
---|
| 2414 | && pExpDir->AddressOfNames + cNamedExports * sizeof(uint32_t) <= cbMapping,
|
---|
| 2415 | VERR_BAD_EXE_FORMAT);
|
---|
| 2416 | uint32_t const * const paoffNamedExports = (uint32_t const *)&pbMapping[pExpDir->AddressOfNames];
|
---|
| 2417 |
|
---|
| 2418 | AssertReturn( pExpDir->AddressOfNameOrdinals >= offEndSectHdrs
|
---|
| 2419 | && pExpDir->AddressOfNameOrdinals < cbMapping
|
---|
| 2420 | && pExpDir->AddressOfNameOrdinals + cNamedExports * sizeof(uint32_t) <= cbMapping,
|
---|
| 2421 | VERR_BAD_EXE_FORMAT);
|
---|
| 2422 | uint16_t const * const pau16NameOrdinals = (uint16_t const *)&pbMapping[pExpDir->AddressOfNameOrdinals];
|
---|
| 2423 |
|
---|
| 2424 | /*
|
---|
| 2425 | * Validate the entrypoint RVA by scanning the export table.
|
---|
| 2426 | */
|
---|
| 2427 | uint32_t iExportOrdinal = UINT32_MAX;
|
---|
[75282] | 2428 | if (!ppvSymbol)
|
---|
| 2429 | {
|
---|
| 2430 | for (uint32_t i = 0; i < cExports; i++)
|
---|
| 2431 | if (paoffExports[i] == uRvaToValidate)
|
---|
| 2432 | {
|
---|
| 2433 | iExportOrdinal = i;
|
---|
| 2434 | break;
|
---|
| 2435 | }
|
---|
| 2436 | if (iExportOrdinal == UINT32_MAX)
|
---|
[75003] | 2437 | {
|
---|
[75282] | 2438 | SUPR0Printf("SUPDrv: No export with rva %#x (%s) in %s!\n", uRvaToValidate, pszSymbol, pImage->szName);
|
---|
| 2439 | return VERR_NOT_FOUND;
|
---|
[75003] | 2440 | }
|
---|
| 2441 | }
|
---|
| 2442 |
|
---|
| 2443 | /*
|
---|
[75282] | 2444 | * Can we validate the symbol name too or should we find a name?
|
---|
| 2445 | * If so, just do a linear search.
|
---|
[75003] | 2446 | */
|
---|
[75282] | 2447 | if (pszSymbol && (RT_C_IS_UPPER(*pszSymbol) || ppvSymbol))
|
---|
[75003] | 2448 | {
|
---|
| 2449 | for (uint32_t i = 0; i < cNamedExports; i++)
|
---|
| 2450 | {
|
---|
| 2451 | uint32_t const offName = paoffNamedExports[i];
|
---|
| 2452 | AssertReturn(offName < cbMapping, VERR_BAD_EXE_FORMAT);
|
---|
| 2453 | uint32_t const cchMaxName = cbMapping - offName;
|
---|
[75282] | 2454 | const char * const pszName = (const char *)&pbMapping[offName];
|
---|
[75003] | 2455 | const char * const pszEnd = (const char *)memchr(pszName, '\0', cchMaxName);
|
---|
| 2456 | AssertReturn(pszEnd, VERR_BAD_EXE_FORMAT);
|
---|
| 2457 |
|
---|
| 2458 | if ( cchSymbol == (size_t)(pszEnd - pszName)
|
---|
| 2459 | && memcmp(pszName, pszSymbol, cchSymbol) == 0)
|
---|
| 2460 | {
|
---|
[75282] | 2461 | if (ppvSymbol)
|
---|
| 2462 | {
|
---|
| 2463 | iExportOrdinal = pau16NameOrdinals[i];
|
---|
| 2464 | if ( iExportOrdinal < cExports
|
---|
| 2465 | && paoffExports[iExportOrdinal] < cbMapping)
|
---|
| 2466 | {
|
---|
| 2467 | *ppvSymbol = (void *)(paoffExports[iExportOrdinal] + pbMapping);
|
---|
| 2468 | return VINF_SUCCESS;
|
---|
| 2469 | }
|
---|
| 2470 | }
|
---|
| 2471 | else if (pau16NameOrdinals[i] == iExportOrdinal)
|
---|
[75003] | 2472 | return VINF_SUCCESS;
|
---|
[75282] | 2473 | else
|
---|
| 2474 | SUPR0Printf("SUPDrv: Different exports found for %s and rva %#x in %s: %#x vs %#x\n",
|
---|
| 2475 | pszSymbol, uRvaToValidate, pImage->szName, pau16NameOrdinals[i], iExportOrdinal);
|
---|
[75003] | 2476 | return VERR_LDR_BAD_FIXUP;
|
---|
| 2477 | }
|
---|
| 2478 | }
|
---|
[75282] | 2479 | if (!ppvSymbol)
|
---|
| 2480 | SUPR0Printf("SUPDrv: No export named %s (%#x) in %s!\n", pszSymbol, uRvaToValidate, pImage->szName);
|
---|
[75003] | 2481 | return VERR_SYMBOL_NOT_FOUND;
|
---|
| 2482 | }
|
---|
[25262] | 2483 | return VINF_SUCCESS;
|
---|
[75282] | 2484 | }
|
---|
[75003] | 2485 |
|
---|
[75282] | 2486 |
|
---|
| 2487 | int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv,
|
---|
| 2488 | const uint8_t *pbImageBits, const char *pszSymbol)
|
---|
| 2489 | {
|
---|
| 2490 | RT_NOREF(pDevExt, pbImageBits);
|
---|
| 2491 | return supdrvOSLdrValidatePointerOrQuerySymbol(pImage, pv, pszSymbol, pszSymbol ? strlen(pszSymbol) : 0, NULL);
|
---|
[25258] | 2492 | }
|
---|
| 2493 |
|
---|
| 2494 |
|
---|
[75282] | 2495 | int VBOXCALL supdrvOSLdrQuerySymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage,
|
---|
| 2496 | const char *pszSymbol, size_t cchSymbol, void **ppvSymbol)
|
---|
| 2497 | {
|
---|
| 2498 | RT_NOREF(pDevExt);
|
---|
| 2499 | AssertReturn(ppvSymbol, VERR_INVALID_PARAMETER);
|
---|
| 2500 | AssertReturn(pszSymbol, VERR_INVALID_PARAMETER);
|
---|
| 2501 | return supdrvOSLdrValidatePointerOrQuerySymbol(pImage, NULL, pszSymbol, cchSymbol, ppvSymbol);
|
---|
| 2502 | }
|
---|
| 2503 |
|
---|
| 2504 |
|
---|
[25331] | 2505 | /**
|
---|
[57378] | 2506 | * memcmp + errormsg + log.
|
---|
[25336] | 2507 | *
|
---|
[25331] | 2508 | * @returns Same as memcmp.
|
---|
| 2509 | * @param pImage The image.
|
---|
| 2510 | * @param pbImageBits The image bits ring-3 uploads.
|
---|
| 2511 | * @param uRva The RVA to start comparing at.
|
---|
| 2512 | * @param cb The number of bytes to compare.
|
---|
[57378] | 2513 | * @param pReq The load request.
|
---|
[25331] | 2514 | */
|
---|
[57378] | 2515 | static int supdrvNtCompare(PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, uint32_t uRva, uint32_t cb, PSUPLDRLOAD pReq)
|
---|
[25258] | 2516 | {
|
---|
[25331] | 2517 | int iDiff = memcmp((uint8_t const *)pImage->pvImage + uRva, pbImageBits + uRva, cb);
|
---|
| 2518 | if (iDiff)
|
---|
[25262] | 2519 | {
|
---|
[25331] | 2520 | uint32_t cbLeft = cb;
|
---|
[25300] | 2521 | const uint8_t *pbNativeBits = (const uint8_t *)pImage->pvImage;
|
---|
[25331] | 2522 | for (size_t off = uRva; cbLeft > 0; off++, cbLeft--)
|
---|
[25300] | 2523 | if (pbNativeBits[off] != pbImageBits[off])
|
---|
| 2524 | {
|
---|
[57378] | 2525 | /* Note! We need to copy image bits into a temporary stack buffer here as we'd
|
---|
| 2526 | otherwise risk overwriting them while formatting the error message. */
|
---|
| 2527 | uint8_t abBytes[64];
|
---|
| 2528 | memcpy(abBytes, &pbImageBits[off], RT_MIN(64, cbLeft));
|
---|
| 2529 | supdrvLdrLoadError(VERR_LDR_MISMATCH_NATIVE, pReq,
|
---|
[57400] | 2530 | "Mismatch at %#x (%p) of %s loaded at %p:\n"
|
---|
[57378] | 2531 | "ntld: %.*Rhxs\n"
|
---|
| 2532 | "iprt: %.*Rhxs",
|
---|
[57400] | 2533 | off, &pbNativeBits[off], pImage->szName, pImage->pvImage,
|
---|
[57378] | 2534 | RT_MIN(64, cbLeft), &pbNativeBits[off],
|
---|
| 2535 | RT_MIN(64, cbLeft), &abBytes[0]);
|
---|
| 2536 | SUPR0Printf("VBoxDrv: %s", pReq->u.Out.szError);
|
---|
[25331] | 2537 | break;
|
---|
[25300] | 2538 | }
|
---|
[25262] | 2539 | }
|
---|
[25331] | 2540 | return iDiff;
|
---|
| 2541 | }
|
---|
| 2542 |
|
---|
[71136] | 2543 | /** Image compare exclusion regions. */
|
---|
| 2544 | typedef struct SUPDRVNTEXCLREGIONS
|
---|
| 2545 | {
|
---|
| 2546 | /** Number of regions. */
|
---|
| 2547 | uint32_t cRegions;
|
---|
| 2548 | /** The regions. */
|
---|
| 2549 | struct SUPDRVNTEXCLREGION
|
---|
| 2550 | {
|
---|
| 2551 | uint32_t uRva;
|
---|
| 2552 | uint32_t cb;
|
---|
[93273] | 2553 | } aRegions[20];
|
---|
[71136] | 2554 | } SUPDRVNTEXCLREGIONS;
|
---|
[57378] | 2555 |
|
---|
[71136] | 2556 | /**
|
---|
| 2557 | * Adds an exclusion region to the collection.
|
---|
| 2558 | */
|
---|
| 2559 | static bool supdrvNtAddExclRegion(SUPDRVNTEXCLREGIONS *pRegions, uint32_t uRvaRegion, uint32_t cbRegion)
|
---|
| 2560 | {
|
---|
| 2561 | uint32_t const cRegions = pRegions->cRegions;
|
---|
| 2562 | AssertReturn(cRegions + 1 <= RT_ELEMENTS(pRegions->aRegions), false);
|
---|
| 2563 | uint32_t i = 0;
|
---|
| 2564 | for (; i < cRegions; i++)
|
---|
| 2565 | if (uRvaRegion < pRegions->aRegions[i].uRva)
|
---|
| 2566 | break;
|
---|
| 2567 | if (i != cRegions)
|
---|
| 2568 | memmove(&pRegions->aRegions[i + 1], &pRegions->aRegions[i], (cRegions - i) * sizeof(pRegions->aRegions[0]));
|
---|
| 2569 | pRegions->aRegions[i].uRva = uRvaRegion;
|
---|
| 2570 | pRegions->aRegions[i].cb = cbRegion;
|
---|
| 2571 | pRegions->cRegions++;
|
---|
| 2572 | return true;
|
---|
| 2573 | }
|
---|
| 2574 |
|
---|
| 2575 |
|
---|
[37249] | 2576 | int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
|
---|
[25331] | 2577 | {
|
---|
[57378] | 2578 | NOREF(pDevExt);
|
---|
[25331] | 2579 | if (pImage->pvNtSectionObj)
|
---|
| 2580 | {
|
---|
| 2581 | /*
|
---|
| 2582 | * Usually, the entire image matches exactly.
|
---|
| 2583 | */
|
---|
| 2584 | if (!memcmp(pImage->pvImage, pbImageBits, pImage->cbImageBits))
|
---|
| 2585 | return VINF_SUCCESS;
|
---|
| 2586 |
|
---|
| 2587 | /*
|
---|
[57456] | 2588 | * On Windows 10 the ImageBase member of the optional header is sometimes
|
---|
[75003] | 2589 | * updated with the actual load address and sometimes not.
|
---|
[84497] | 2590 | * On older windows versions (builds <= 9200?), a user mode address is
|
---|
| 2591 | * sometimes found in the image base field after upgrading to VC++ 14.2.
|
---|
[57456] | 2592 | */
|
---|
| 2593 | uint32_t const offNtHdrs = *(uint16_t *)pbImageBits == IMAGE_DOS_SIGNATURE
|
---|
| 2594 | ? ((IMAGE_DOS_HEADER const *)pbImageBits)->e_lfanew
|
---|
| 2595 | : 0;
|
---|
| 2596 | AssertLogRelReturn(offNtHdrs + sizeof(IMAGE_NT_HEADERS) < pImage->cbImageBits, VERR_INTERNAL_ERROR_5);
|
---|
| 2597 | IMAGE_NT_HEADERS const *pNtHdrsIprt = (IMAGE_NT_HEADERS const *)(pbImageBits + offNtHdrs);
|
---|
| 2598 | IMAGE_NT_HEADERS const *pNtHdrsNtLd = (IMAGE_NT_HEADERS const *)((uintptr_t)pImage->pvImage + offNtHdrs);
|
---|
| 2599 |
|
---|
[73097] | 2600 | uint32_t const offImageBase = offNtHdrs + RT_UOFFSETOF(IMAGE_NT_HEADERS, OptionalHeader.ImageBase);
|
---|
[57456] | 2601 | uint32_t const cbImageBase = RT_SIZEOFMEMB(IMAGE_NT_HEADERS, OptionalHeader.ImageBase);
|
---|
| 2602 | if ( pNtHdrsNtLd->OptionalHeader.ImageBase != pNtHdrsIprt->OptionalHeader.ImageBase
|
---|
| 2603 | && pNtHdrsIprt->Signature == IMAGE_NT_SIGNATURE
|
---|
| 2604 | && pNtHdrsIprt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR_MAGIC
|
---|
| 2605 | && !memcmp(pImage->pvImage, pbImageBits, offImageBase)
|
---|
| 2606 | && !memcmp((uint8_t const *)pImage->pvImage + offImageBase + cbImageBase,
|
---|
| 2607 | pbImageBits + offImageBase + cbImageBase,
|
---|
| 2608 | pImage->cbImageBits - offImageBase - cbImageBase))
|
---|
| 2609 | return VINF_SUCCESS;
|
---|
| 2610 |
|
---|
| 2611 | /*
|
---|
| 2612 | * On Windows Server 2003 (sp2 x86) both import thunk tables are fixed
|
---|
| 2613 | * up and we typically get a mismatch in the INIT section.
|
---|
| 2614 | *
|
---|
[25331] | 2615 | * So, lets see if everything matches when excluding the
|
---|
[57456] | 2616 | * OriginalFirstThunk tables and (maybe) the ImageBase member.
|
---|
| 2617 | * For simplicity the max number of exclusion regions is set to 16.
|
---|
[25331] | 2618 | */
|
---|
[57456] | 2619 | if ( pNtHdrsIprt->Signature == IMAGE_NT_SIGNATURE
|
---|
| 2620 | && pNtHdrsIprt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR_MAGIC
|
---|
| 2621 | && pNtHdrsIprt->OptionalHeader.NumberOfRvaAndSizes > IMAGE_DIRECTORY_ENTRY_IMPORT
|
---|
| 2622 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size >= sizeof(IMAGE_IMPORT_DESCRIPTOR)
|
---|
| 2623 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2624 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress < pImage->cbImageBits
|
---|
[93251] | 2625 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].Size >= sizeof(IMAGE_LOAD_CONFIG_DIRECTORY)
|
---|
| 2626 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].VirtualAddress > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2627 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].VirtualAddress < pImage->cbImageBits)
|
---|
[25331] | 2628 | {
|
---|
[71136] | 2629 | SUPDRVNTEXCLREGIONS ExcludeRegions;
|
---|
| 2630 | ExcludeRegions.cRegions = 0;
|
---|
[57456] | 2631 |
|
---|
| 2632 | /* ImageBase: */
|
---|
[84497] | 2633 | if (pNtHdrsNtLd->OptionalHeader.ImageBase != pNtHdrsIprt->OptionalHeader.ImageBase)
|
---|
[71136] | 2634 | supdrvNtAddExclRegion(&ExcludeRegions, offImageBase, cbImageBase);
|
---|
[57456] | 2635 |
|
---|
| 2636 | /* Imports: */
|
---|
| 2637 | uint32_t cImpsLeft = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size
|
---|
[25331] | 2638 | / sizeof(IMAGE_IMPORT_DESCRIPTOR);
|
---|
[57456] | 2639 | uint32_t offImps = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
|
---|
| 2640 | AssertLogRelReturn(offImps + cImpsLeft * sizeof(IMAGE_IMPORT_DESCRIPTOR) <= pImage->cbImageBits, VERR_INTERNAL_ERROR_3);
|
---|
| 2641 | IMAGE_IMPORT_DESCRIPTOR const *pImp = (IMAGE_IMPORT_DESCRIPTOR const *)(pbImageBits + offImps);
|
---|
[25331] | 2642 | while ( cImpsLeft-- > 0
|
---|
[71136] | 2643 | && ExcludeRegions.cRegions < RT_ELEMENTS(ExcludeRegions.aRegions))
|
---|
[25331] | 2644 | {
|
---|
| 2645 | uint32_t uRvaThunk = pImp->OriginalFirstThunk;
|
---|
[71136] | 2646 | if ( uRvaThunk > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2647 | && uRvaThunk <= pImage->cbImageBits - sizeof(IMAGE_THUNK_DATA)
|
---|
| 2648 | && uRvaThunk != pImp->FirstThunk)
|
---|
[25331] | 2649 | {
|
---|
| 2650 | /* Find the size of the thunk table. */
|
---|
| 2651 | IMAGE_THUNK_DATA const *paThunk = (IMAGE_THUNK_DATA const *)(pbImageBits + uRvaThunk);
|
---|
| 2652 | uint32_t cMaxThunks = (pImage->cbImageBits - uRvaThunk) / sizeof(IMAGE_THUNK_DATA);
|
---|
| 2653 | uint32_t cThunks = 0;
|
---|
| 2654 | while (cThunks < cMaxThunks && paThunk[cThunks].u1.Function != 0)
|
---|
| 2655 | cThunks++;
|
---|
[71136] | 2656 | supdrvNtAddExclRegion(&ExcludeRegions, uRvaThunk, cThunks * sizeof(IMAGE_THUNK_DATA));
|
---|
| 2657 | }
|
---|
[25331] | 2658 |
|
---|
[71136] | 2659 | #if 0 /* Useful for VMMR0 hacking, not for production use. See also SUPDrvLdr.cpp. */
|
---|
| 2660 | /* Exclude the other thunk table if ntoskrnl.exe. */
|
---|
| 2661 | uint32_t uRvaName = pImp->Name;
|
---|
| 2662 | if ( uRvaName > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2663 | && uRvaName < pImage->cbImageBits - sizeof("ntoskrnl.exe")
|
---|
| 2664 | && memcmp(&pbImageBits[uRvaName], RT_STR_TUPLE("ntoskrnl.exe")) == 0)
|
---|
| 2665 | {
|
---|
| 2666 | uRvaThunk = pImp->FirstThunk;
|
---|
| 2667 | if ( uRvaThunk > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2668 | && uRvaThunk <= pImage->cbImageBits - sizeof(IMAGE_THUNK_DATA))
|
---|
| 2669 | {
|
---|
| 2670 | /* Find the size of the thunk table. */
|
---|
| 2671 | IMAGE_THUNK_DATA const *paThunk = (IMAGE_THUNK_DATA const *)(pbImageBits + uRvaThunk);
|
---|
| 2672 | uint32_t cMaxThunks = (pImage->cbImageBits - uRvaThunk) / sizeof(IMAGE_THUNK_DATA);
|
---|
| 2673 | uint32_t cThunks = 0;
|
---|
| 2674 | while (cThunks < cMaxThunks && paThunk[cThunks].u1.Function != 0)
|
---|
| 2675 | cThunks++;
|
---|
| 2676 | supdrvNtAddExclRegion(&ExcludeRegions, uRvaThunk, cThunks * sizeof(IMAGE_THUNK_DATA));
|
---|
| 2677 | }
|
---|
[25331] | 2678 | }
|
---|
[71136] | 2679 | #endif
|
---|
[25331] | 2680 |
|
---|
| 2681 | /* advance */
|
---|
| 2682 | pImp++;
|
---|
| 2683 | }
|
---|
| 2684 |
|
---|
[93251] | 2685 | /* Exclude the security cookie if present. */
|
---|
| 2686 | uint32_t const cbCfg = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].Size;
|
---|
| 2687 | uint32_t const offCfg = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].VirtualAddress;
|
---|
| 2688 | IMAGE_LOAD_CONFIG_DIRECTORY const * const pCfg = (IMAGE_LOAD_CONFIG_DIRECTORY const *)&pbImageBits[offCfg];
|
---|
| 2689 | if ( pCfg->Size >= RT_UOFFSET_AFTER(IMAGE_LOAD_CONFIG_DIRECTORY, SecurityCookie)
|
---|
| 2690 | && pCfg->SecurityCookie != NULL)
|
---|
| 2691 | supdrvNtAddExclRegion(&ExcludeRegions, (uintptr_t)pCfg->SecurityCookie - (uintptr_t)pImage->pvImage, sizeof(void *));
|
---|
| 2692 |
|
---|
[93273] | 2693 | /* Also exclude the GuardCFCheckFunctionPointer and GuardCFDispatchFunctionPointer pointer variables. */
|
---|
| 2694 | if ( pCfg->Size >= RT_UOFFSET_AFTER(IMAGE_LOAD_CONFIG_DIRECTORY, GuardCFCheckFunctionPointer)
|
---|
| 2695 | && pCfg->GuardCFCheckFunctionPointer != NULL)
|
---|
| 2696 | supdrvNtAddExclRegion(&ExcludeRegions, (uintptr_t)pCfg->GuardCFCheckFunctionPointer - (uintptr_t)pImage->pvImage, sizeof(void *));
|
---|
| 2697 | if ( pCfg->Size >= RT_UOFFSET_AFTER(IMAGE_LOAD_CONFIG_DIRECTORY, GuardCFDispatchFunctionPointer)
|
---|
| 2698 | && pCfg->GuardCFDispatchFunctionPointer != NULL)
|
---|
| 2699 | supdrvNtAddExclRegion(&ExcludeRegions, (uintptr_t)pCfg->GuardCFDispatchFunctionPointer - (uintptr_t)pImage->pvImage, sizeof(void *));
|
---|
| 2700 |
|
---|
| 2701 | /* Ditto for the XFG variants: */
|
---|
| 2702 | if ( pCfg->Size >= RT_UOFFSET_AFTER(IMAGE_LOAD_CONFIG_DIRECTORY, GuardXFGCheckFunctionPointer)
|
---|
| 2703 | && pCfg->GuardXFGCheckFunctionPointer != NULL)
|
---|
| 2704 | supdrvNtAddExclRegion(&ExcludeRegions, (uintptr_t)pCfg->GuardXFGCheckFunctionPointer - (uintptr_t)pImage->pvImage, sizeof(void *));
|
---|
| 2705 | if ( pCfg->Size >= RT_UOFFSET_AFTER(IMAGE_LOAD_CONFIG_DIRECTORY, GuardXFGDispatchFunctionPointer)
|
---|
| 2706 | && pCfg->GuardXFGDispatchFunctionPointer != NULL)
|
---|
| 2707 | supdrvNtAddExclRegion(&ExcludeRegions, (uintptr_t)pCfg->GuardXFGDispatchFunctionPointer - (uintptr_t)pImage->pvImage, sizeof(void *));
|
---|
| 2708 |
|
---|
| 2709 | /** @todo What about GuardRFVerifyStackPointerFunctionPointer and
|
---|
| 2710 | * GuardRFFailureRoutineFunctionPointer? Ignore for now as the compiler we're
|
---|
| 2711 | * using (19.26.28805) sets them to zero from what I can tell. */
|
---|
| 2712 |
|
---|
[25331] | 2713 | /*
|
---|
| 2714 | * Ok, do the comparison.
|
---|
| 2715 | */
|
---|
| 2716 | int iDiff = 0;
|
---|
| 2717 | uint32_t uRvaNext = 0;
|
---|
[71136] | 2718 | for (unsigned i = 0; !iDiff && i < ExcludeRegions.cRegions; i++)
|
---|
[25331] | 2719 | {
|
---|
[71136] | 2720 | if (uRvaNext < ExcludeRegions.aRegions[i].uRva)
|
---|
| 2721 | iDiff = supdrvNtCompare(pImage, pbImageBits, uRvaNext, ExcludeRegions.aRegions[i].uRva - uRvaNext, pReq);
|
---|
| 2722 | uRvaNext = ExcludeRegions.aRegions[i].uRva + ExcludeRegions.aRegions[i].cb;
|
---|
[25331] | 2723 | }
|
---|
| 2724 | if (!iDiff && uRvaNext < pImage->cbImageBits)
|
---|
[57378] | 2725 | iDiff = supdrvNtCompare(pImage, pbImageBits, uRvaNext, pImage->cbImageBits - uRvaNext, pReq);
|
---|
[25331] | 2726 | if (!iDiff)
|
---|
[93274] | 2727 | {
|
---|
| 2728 | /*
|
---|
| 2729 | * If there is a cookie init export, call it.
|
---|
| 2730 | *
|
---|
| 2731 | * This typically just does:
|
---|
| 2732 | * __security_cookie = (rdtsc ^ &__security_cookie) & 0xffffffffffff;
|
---|
| 2733 | * __security_cookie_complement = ~__security_cookie;
|
---|
| 2734 | */
|
---|
| 2735 | PFNRT pfnModuleInitSecurityCookie = NULL;
|
---|
| 2736 | int rcSym = supdrvOSLdrQuerySymbol(pDevExt, pImage, RT_STR_TUPLE("ModuleInitSecurityCookie"),
|
---|
| 2737 | (void **)&pfnModuleInitSecurityCookie);
|
---|
| 2738 | if (RT_SUCCESS(rcSym) && pfnModuleInitSecurityCookie)
|
---|
| 2739 | pfnModuleInitSecurityCookie();
|
---|
| 2740 |
|
---|
[25331] | 2741 | return VINF_SUCCESS;
|
---|
[93274] | 2742 | }
|
---|
[25331] | 2743 | }
|
---|
| 2744 | else
|
---|
[57378] | 2745 | supdrvNtCompare(pImage, pbImageBits, 0, pImage->cbImageBits, pReq);
|
---|
[25331] | 2746 | return VERR_LDR_MISMATCH_NATIVE;
|
---|
| 2747 | }
|
---|
[57378] | 2748 | return supdrvLdrLoadError(VERR_INTERNAL_ERROR_4, pReq, "No NT section object! Impossible!");
|
---|
[25258] | 2749 | }
|
---|
| 2750 |
|
---|
| 2751 |
|
---|
| 2752 | void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2753 | {
|
---|
[25262] | 2754 | if (pImage->pvNtSectionObj)
|
---|
| 2755 | {
|
---|
[25308] | 2756 | if (pImage->hMemLock != NIL_RTR0MEMOBJ)
|
---|
| 2757 | {
|
---|
| 2758 | RTR0MemObjFree(pImage->hMemLock, false /*fFreeMappings*/);
|
---|
| 2759 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 2760 | }
|
---|
| 2761 |
|
---|
[25331] | 2762 | NTSTATUS rcNt = ZwSetSystemInformation(MY_SystemUnloadGdiDriverInformation,
|
---|
| 2763 | &pImage->pvNtSectionObj, sizeof(pImage->pvNtSectionObj));
|
---|
| 2764 | if (rcNt != STATUS_SUCCESS)
|
---|
| 2765 | SUPR0Printf("VBoxDrv: failed to unload '%s', rcNt=%#x\n", pImage->szName, rcNt);
|
---|
[25308] | 2766 | pImage->pvNtSectionObj = NULL;
|
---|
[25262] | 2767 | }
|
---|
| 2768 | NOREF(pDevExt);
|
---|
[25258] | 2769 | }
|
---|
| 2770 |
|
---|
| 2771 |
|
---|
[87700] | 2772 | void VBOXCALL supdrvOSLdrRetainWrapperModule(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2773 | {
|
---|
| 2774 | RT_NOREF(pDevExt, pImage);
|
---|
| 2775 | AssertFailed();
|
---|
| 2776 | }
|
---|
| 2777 |
|
---|
| 2778 |
|
---|
| 2779 | void VBOXCALL supdrvOSLdrReleaseWrapperModule(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2780 | {
|
---|
| 2781 | RT_NOREF(pDevExt, pImage);
|
---|
| 2782 | AssertFailed();
|
---|
| 2783 | }
|
---|
| 2784 |
|
---|
| 2785 |
|
---|
[49634] | 2786 | #ifdef SUPDRV_WITH_MSR_PROBER
|
---|
| 2787 |
|
---|
[49855] | 2788 | #if 1
|
---|
| 2789 | /** @todo make this selectable. */
|
---|
| 2790 | # define AMD_MSR_PASSCODE 0x9c5a203a
|
---|
| 2791 | #else
|
---|
| 2792 | # define ASMRdMsrEx(a, b, c) ASMRdMsr(a)
|
---|
| 2793 | # define ASMWrMsrEx(a, b, c) ASMWrMsr(a,c)
|
---|
| 2794 | #endif
|
---|
| 2795 |
|
---|
| 2796 |
|
---|
[49635] | 2797 | /**
|
---|
| 2798 | * Argument package used by supdrvOSMsrProberRead and supdrvOSMsrProberWrite.
|
---|
| 2799 | */
|
---|
| 2800 | typedef struct SUPDRVNTMSPROBERARGS
|
---|
| 2801 | {
|
---|
| 2802 | uint32_t uMsr;
|
---|
| 2803 | uint64_t uValue;
|
---|
| 2804 | bool fGp;
|
---|
| 2805 | } SUPDRVNTMSPROBERARGS;
|
---|
| 2806 |
|
---|
| 2807 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberRead.} */
|
---|
| 2808 | static DECLCALLBACK(void) supdrvNtMsProberReadOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2809 | {
|
---|
| 2810 | /*
|
---|
| 2811 | * rdmsr and wrmsr faults can be caught even with interrupts disabled.
|
---|
| 2812 | * (At least on 32-bit XP.)
|
---|
| 2813 | */
|
---|
| 2814 | SUPDRVNTMSPROBERARGS *pArgs = (SUPDRVNTMSPROBERARGS *)pvUser1; NOREF(idCpu); NOREF(pvUser2);
|
---|
| 2815 | RTCCUINTREG fOldFlags = ASMIntDisableFlags();
|
---|
| 2816 | __try
|
---|
| 2817 | {
|
---|
[49855] | 2818 | pArgs->uValue = ASMRdMsrEx(pArgs->uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2819 | pArgs->fGp = false;
|
---|
| 2820 | }
|
---|
| 2821 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2822 | {
|
---|
| 2823 | pArgs->fGp = true;
|
---|
| 2824 | pArgs->uValue = 0;
|
---|
| 2825 | }
|
---|
| 2826 | ASMSetFlags(fOldFlags);
|
---|
| 2827 | }
|
---|
| 2828 |
|
---|
| 2829 |
|
---|
[49634] | 2830 | int VBOXCALL supdrvOSMsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t *puValue)
|
---|
| 2831 | {
|
---|
[49635] | 2832 | SUPDRVNTMSPROBERARGS Args;
|
---|
| 2833 | Args.uMsr = uMsr;
|
---|
| 2834 | Args.uValue = 0;
|
---|
| 2835 | Args.fGp = true;
|
---|
| 2836 |
|
---|
| 2837 | if (idCpu == NIL_RTCPUID)
|
---|
| 2838 | supdrvNtMsProberReadOnCpu(idCpu, &Args, NULL);
|
---|
| 2839 | else
|
---|
| 2840 | {
|
---|
| 2841 | int rc = RTMpOnSpecific(idCpu, supdrvNtMsProberReadOnCpu, &Args, NULL);
|
---|
| 2842 | if (RT_FAILURE(rc))
|
---|
| 2843 | return rc;
|
---|
| 2844 | }
|
---|
| 2845 |
|
---|
| 2846 | if (Args.fGp)
|
---|
| 2847 | return VERR_ACCESS_DENIED;
|
---|
| 2848 | *puValue = Args.uValue;
|
---|
| 2849 | return VINF_SUCCESS;
|
---|
[49634] | 2850 | }
|
---|
| 2851 |
|
---|
| 2852 |
|
---|
[49635] | 2853 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberWrite.} */
|
---|
| 2854 | static DECLCALLBACK(void) supdrvNtMsProberWriteOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2855 | {
|
---|
| 2856 | /*
|
---|
| 2857 | * rdmsr and wrmsr faults can be caught even with interrupts disabled.
|
---|
| 2858 | * (At least on 32-bit XP.)
|
---|
| 2859 | */
|
---|
| 2860 | SUPDRVNTMSPROBERARGS *pArgs = (SUPDRVNTMSPROBERARGS *)pvUser1; NOREF(idCpu); NOREF(pvUser2);
|
---|
| 2861 | RTCCUINTREG fOldFlags = ASMIntDisableFlags();
|
---|
| 2862 | __try
|
---|
| 2863 | {
|
---|
[49855] | 2864 | ASMWrMsrEx(pArgs->uMsr, AMD_MSR_PASSCODE, pArgs->uValue);
|
---|
[49635] | 2865 | pArgs->fGp = false;
|
---|
| 2866 | }
|
---|
| 2867 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2868 | {
|
---|
| 2869 | pArgs->fGp = true;
|
---|
| 2870 | }
|
---|
| 2871 | ASMSetFlags(fOldFlags);
|
---|
| 2872 | }
|
---|
| 2873 |
|
---|
[49634] | 2874 | int VBOXCALL supdrvOSMsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue)
|
---|
| 2875 | {
|
---|
[49635] | 2876 | SUPDRVNTMSPROBERARGS Args;
|
---|
| 2877 | Args.uMsr = uMsr;
|
---|
| 2878 | Args.uValue = uValue;
|
---|
| 2879 | Args.fGp = true;
|
---|
| 2880 |
|
---|
| 2881 | if (idCpu == NIL_RTCPUID)
|
---|
[62666] | 2882 | supdrvNtMsProberWriteOnCpu(idCpu, &Args, NULL);
|
---|
[49635] | 2883 | else
|
---|
| 2884 | {
|
---|
[62666] | 2885 | int rc = RTMpOnSpecific(idCpu, supdrvNtMsProberWriteOnCpu, &Args, NULL);
|
---|
[49635] | 2886 | if (RT_FAILURE(rc))
|
---|
| 2887 | return rc;
|
---|
| 2888 | }
|
---|
| 2889 |
|
---|
| 2890 | if (Args.fGp)
|
---|
| 2891 | return VERR_ACCESS_DENIED;
|
---|
| 2892 | return VINF_SUCCESS;
|
---|
[49634] | 2893 | }
|
---|
| 2894 |
|
---|
[49635] | 2895 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberModify.} */
|
---|
| 2896 | static DECLCALLBACK(void) supdrvNtMsProberModifyOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2897 | {
|
---|
| 2898 | PSUPMSRPROBER pReq = (PSUPMSRPROBER)pvUser1;
|
---|
| 2899 | register uint32_t uMsr = pReq->u.In.uMsr;
|
---|
| 2900 | bool const fFaster = pReq->u.In.enmOp == SUPMSRPROBEROP_MODIFY_FASTER;
|
---|
| 2901 | uint64_t uBefore = 0;
|
---|
| 2902 | uint64_t uWritten = 0;
|
---|
| 2903 | uint64_t uAfter = 0;
|
---|
| 2904 | bool fBeforeGp = true;
|
---|
| 2905 | bool fModifyGp = true;
|
---|
| 2906 | bool fAfterGp = true;
|
---|
| 2907 | bool fRestoreGp = true;
|
---|
| 2908 | RTCCUINTREG fOldFlags;
|
---|
[62666] | 2909 | RT_NOREF2(idCpu, pvUser2);
|
---|
[49634] | 2910 |
|
---|
[49635] | 2911 | /*
|
---|
| 2912 | * Do the job.
|
---|
| 2913 | */
|
---|
| 2914 | fOldFlags = ASMIntDisableFlags();
|
---|
| 2915 | ASMCompilerBarrier(); /* paranoia */
|
---|
| 2916 | if (!fFaster)
|
---|
| 2917 | ASMWriteBackAndInvalidateCaches();
|
---|
| 2918 |
|
---|
| 2919 | __try
|
---|
| 2920 | {
|
---|
[49855] | 2921 | uBefore = ASMRdMsrEx(uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2922 | fBeforeGp = false;
|
---|
| 2923 | }
|
---|
| 2924 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2925 | {
|
---|
| 2926 | fBeforeGp = true;
|
---|
| 2927 | }
|
---|
| 2928 | if (!fBeforeGp)
|
---|
| 2929 | {
|
---|
| 2930 | register uint64_t uRestore = uBefore;
|
---|
| 2931 |
|
---|
| 2932 | /* Modify. */
|
---|
| 2933 | uWritten = uRestore;
|
---|
| 2934 | uWritten &= pReq->u.In.uArgs.Modify.fAndMask;
|
---|
| 2935 | uWritten |= pReq->u.In.uArgs.Modify.fOrMask;
|
---|
| 2936 | __try
|
---|
| 2937 | {
|
---|
[49855] | 2938 | ASMWrMsrEx(uMsr, AMD_MSR_PASSCODE, uWritten);
|
---|
[49635] | 2939 | fModifyGp = false;
|
---|
| 2940 | }
|
---|
| 2941 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2942 | {
|
---|
| 2943 | fModifyGp = true;
|
---|
| 2944 | }
|
---|
| 2945 |
|
---|
| 2946 | /* Read modified value. */
|
---|
| 2947 | __try
|
---|
| 2948 | {
|
---|
[49855] | 2949 | uAfter = ASMRdMsrEx(uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2950 | fAfterGp = false;
|
---|
| 2951 | }
|
---|
| 2952 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2953 | {
|
---|
| 2954 | fAfterGp = true;
|
---|
| 2955 | }
|
---|
| 2956 |
|
---|
| 2957 | /* Restore original value. */
|
---|
| 2958 | __try
|
---|
| 2959 | {
|
---|
[49855] | 2960 | ASMWrMsrEx(uMsr, AMD_MSR_PASSCODE, uRestore);
|
---|
[49635] | 2961 | fRestoreGp = false;
|
---|
| 2962 | }
|
---|
| 2963 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2964 | {
|
---|
| 2965 | fRestoreGp = true;
|
---|
| 2966 | }
|
---|
| 2967 |
|
---|
| 2968 | /* Invalid everything we can. */
|
---|
| 2969 | if (!fFaster)
|
---|
| 2970 | {
|
---|
| 2971 | ASMWriteBackAndInvalidateCaches();
|
---|
| 2972 | ASMReloadCR3();
|
---|
| 2973 | ASMNopPause();
|
---|
| 2974 | }
|
---|
| 2975 | }
|
---|
| 2976 |
|
---|
| 2977 | ASMCompilerBarrier(); /* paranoia */
|
---|
| 2978 | ASMSetFlags(fOldFlags);
|
---|
| 2979 |
|
---|
| 2980 | /*
|
---|
| 2981 | * Write out the results.
|
---|
| 2982 | */
|
---|
| 2983 | pReq->u.Out.uResults.Modify.uBefore = uBefore;
|
---|
| 2984 | pReq->u.Out.uResults.Modify.uWritten = uWritten;
|
---|
| 2985 | pReq->u.Out.uResults.Modify.uAfter = uAfter;
|
---|
| 2986 | pReq->u.Out.uResults.Modify.fBeforeGp = fBeforeGp;
|
---|
| 2987 | pReq->u.Out.uResults.Modify.fModifyGp = fModifyGp;
|
---|
| 2988 | pReq->u.Out.uResults.Modify.fAfterGp = fAfterGp;
|
---|
| 2989 | pReq->u.Out.uResults.Modify.fRestoreGp = fRestoreGp;
|
---|
| 2990 | RT_ZERO(pReq->u.Out.uResults.Modify.afReserved);
|
---|
| 2991 | }
|
---|
| 2992 |
|
---|
| 2993 |
|
---|
[49634] | 2994 | int VBOXCALL supdrvOSMsrProberModify(RTCPUID idCpu, PSUPMSRPROBER pReq)
|
---|
| 2995 | {
|
---|
[49635] | 2996 | if (idCpu == NIL_RTCPUID)
|
---|
| 2997 | {
|
---|
| 2998 | supdrvNtMsProberModifyOnCpu(idCpu, pReq, NULL);
|
---|
| 2999 | return VINF_SUCCESS;
|
---|
| 3000 | }
|
---|
| 3001 | return RTMpOnSpecific(idCpu, supdrvNtMsProberModifyOnCpu, pReq, NULL);
|
---|
[49634] | 3002 | }
|
---|
| 3003 |
|
---|
| 3004 | #endif /* SUPDRV_WITH_MSR_PROBER */
|
---|
| 3005 |
|
---|
| 3006 |
|
---|
[1850] | 3007 | /**
|
---|
[25465] | 3008 | * Converts an IPRT error code to an nt status code.
|
---|
[1] | 3009 | *
|
---|
| 3010 | * @returns corresponding nt status code.
|
---|
[25465] | 3011 | * @param rc IPRT error status code.
|
---|
[1] | 3012 | */
|
---|
[4800] | 3013 | static NTSTATUS VBoxDrvNtErr2NtStatus(int rc)
|
---|
[1] | 3014 | {
|
---|
| 3015 | switch (rc)
|
---|
| 3016 | {
|
---|
[25465] | 3017 | case VINF_SUCCESS: return STATUS_SUCCESS;
|
---|
| 3018 | case VERR_GENERAL_FAILURE: return STATUS_NOT_SUPPORTED;
|
---|
| 3019 | case VERR_INVALID_PARAMETER: return STATUS_INVALID_PARAMETER;
|
---|
| 3020 | case VERR_INVALID_MAGIC: return STATUS_UNKNOWN_REVISION;
|
---|
| 3021 | case VERR_INVALID_HANDLE: return STATUS_INVALID_HANDLE;
|
---|
| 3022 | case VERR_INVALID_POINTER: return STATUS_INVALID_ADDRESS;
|
---|
| 3023 | case VERR_LOCK_FAILED: return STATUS_NOT_LOCKED;
|
---|
| 3024 | case VERR_ALREADY_LOADED: return STATUS_IMAGE_ALREADY_LOADED;
|
---|
| 3025 | case VERR_PERMISSION_DENIED: return STATUS_ACCESS_DENIED;
|
---|
| 3026 | case VERR_VERSION_MISMATCH: return STATUS_REVISION_MISMATCH;
|
---|
[1] | 3027 | }
|
---|
| 3028 |
|
---|
[51770] | 3029 | if (rc < 0)
|
---|
| 3030 | {
|
---|
| 3031 | if (((uint32_t)rc & UINT32_C(0xffff0000)) == UINT32_C(0xffff0000))
|
---|
[51907] | 3032 | return (NTSTATUS)( ((uint32_t)rc & UINT32_C(0xffff)) | SUP_NT_STATUS_BASE );
|
---|
[51770] | 3033 | }
|
---|
[1] | 3034 | return STATUS_UNSUCCESSFUL;
|
---|
| 3035 | }
|
---|
| 3036 |
|
---|
| 3037 |
|
---|
[91789] | 3038 | SUPR0DECL(int) SUPR0PrintfV(const char *pszFormat, va_list va)
|
---|
[12161] | 3039 | {
|
---|
[91789] | 3040 | char szMsg[384];
|
---|
[12161] | 3041 | size_t cch = RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
|
---|
| 3042 | szMsg[sizeof(szMsg) - 1] = '\0';
|
---|
| 3043 |
|
---|
| 3044 | RTLogWriteDebugger(szMsg, cch);
|
---|
| 3045 | return 0;
|
---|
| 3046 | }
|
---|
[51770] | 3047 |
|
---|
| 3048 |
|
---|
[52192] | 3049 | SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
|
---|
| 3050 | {
|
---|
| 3051 | return 0;
|
---|
| 3052 | }
|
---|
| 3053 |
|
---|
| 3054 |
|
---|
[95087] | 3055 | SUPR0DECL(bool) SUPR0FpuBegin(bool fCtxHook)
|
---|
| 3056 | {
|
---|
| 3057 | RT_NOREF(fCtxHook);
|
---|
| 3058 | return false;
|
---|
| 3059 | }
|
---|
| 3060 |
|
---|
| 3061 |
|
---|
| 3062 | SUPR0DECL(void) SUPR0FpuEnd(bool fCtxHook)
|
---|
| 3063 | {
|
---|
| 3064 | RT_NOREF(fCtxHook);
|
---|
| 3065 | }
|
---|
| 3066 |
|
---|
| 3067 |
|
---|
[71136] | 3068 | SUPR0DECL(int) SUPR0IoCtlSetupForHandle(PSUPDRVSESSION pSession, intptr_t hHandle, uint32_t fFlags, PSUPR0IOCTLCTX *ppCtx)
|
---|
| 3069 | {
|
---|
| 3070 | /*
|
---|
| 3071 | * Validate input.
|
---|
| 3072 | */
|
---|
| 3073 | AssertPtrReturn(ppCtx, VERR_INVALID_POINTER);
|
---|
| 3074 | *ppCtx = NULL;
|
---|
| 3075 | AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
|
---|
| 3076 | AssertReturn(!fFlags, VERR_INVALID_FLAGS);
|
---|
| 3077 |
|
---|
| 3078 | /*
|
---|
| 3079 | * Turn the partition handle into a file object and related device object
|
---|
| 3080 | * so that we can issue direct I/O control calls to the pair later.
|
---|
| 3081 | */
|
---|
| 3082 | PFILE_OBJECT pFileObject = NULL;
|
---|
| 3083 | OBJECT_HANDLE_INFORMATION HandleInfo = { 0, 0 };
|
---|
| 3084 | NTSTATUS rcNt = ObReferenceObjectByHandle((HANDLE)hHandle, /*FILE_WRITE_DATA*/0, *IoFileObjectType,
|
---|
| 3085 | UserMode, (void **)&pFileObject, &HandleInfo);
|
---|
| 3086 | if (!NT_SUCCESS(rcNt))
|
---|
| 3087 | return RTErrConvertFromNtStatus(rcNt);
|
---|
| 3088 | AssertPtrReturn(pFileObject, VERR_INTERNAL_ERROR_3);
|
---|
| 3089 |
|
---|
| 3090 | PDEVICE_OBJECT pDevObject = IoGetRelatedDeviceObject(pFileObject);
|
---|
| 3091 | AssertMsgReturnStmt(RT_VALID_PTR(pDevObject), ("pDevObject=%p\n", pDevObject),
|
---|
| 3092 | ObDereferenceObject(pFileObject), VERR_INTERNAL_ERROR_2);
|
---|
| 3093 |
|
---|
| 3094 | /*
|
---|
| 3095 | * Allocate a context structure and fill it in.
|
---|
| 3096 | */
|
---|
| 3097 | PSUPR0IOCTLCTX pCtx = (PSUPR0IOCTLCTX)RTMemAllocZ(sizeof(*pCtx));
|
---|
| 3098 | if (pCtx)
|
---|
| 3099 | {
|
---|
| 3100 | pCtx->u32Magic = SUPR0IOCTLCTX_MAGIC;
|
---|
| 3101 | pCtx->cRefs = 1;
|
---|
| 3102 | pCtx->pFileObject = pFileObject;
|
---|
| 3103 | pCtx->pDeviceObject = pDevObject;
|
---|
| 3104 |
|
---|
| 3105 | PDRIVER_OBJECT pDrvObject = pDevObject->DriverObject;
|
---|
| 3106 | if ( RT_VALID_PTR(pDrvObject->FastIoDispatch)
|
---|
| 3107 | && RT_VALID_PTR(pDrvObject->FastIoDispatch->FastIoDeviceControl))
|
---|
| 3108 | pCtx->pfnFastIoDeviceControl = pDrvObject->FastIoDispatch->FastIoDeviceControl;
|
---|
| 3109 | else
|
---|
| 3110 | pCtx->pfnFastIoDeviceControl = NULL;
|
---|
| 3111 | *ppCtx = pCtx;
|
---|
| 3112 | return VINF_SUCCESS;
|
---|
| 3113 | }
|
---|
| 3114 |
|
---|
| 3115 | ObDereferenceObject(pFileObject);
|
---|
| 3116 | return VERR_NO_MEMORY;
|
---|
| 3117 | }
|
---|
| 3118 |
|
---|
| 3119 |
|
---|
| 3120 | /**
|
---|
| 3121 | * I/O control destructor for NT.
|
---|
| 3122 | *
|
---|
| 3123 | * @param pCtx The context to destroy.
|
---|
| 3124 | */
|
---|
| 3125 | static void supdrvNtIoCtlContextDestroy(PSUPR0IOCTLCTX pCtx)
|
---|
| 3126 | {
|
---|
| 3127 | PFILE_OBJECT pFileObject = pCtx->pFileObject;
|
---|
| 3128 | pCtx->pfnFastIoDeviceControl = NULL;
|
---|
| 3129 | pCtx->pFileObject = NULL;
|
---|
| 3130 | pCtx->pDeviceObject = NULL;
|
---|
| 3131 | ASMAtomicWriteU32(&pCtx->u32Magic, ~SUPR0IOCTLCTX_MAGIC);
|
---|
| 3132 |
|
---|
| 3133 | if (RT_VALID_PTR(pFileObject))
|
---|
| 3134 | ObDereferenceObject(pFileObject);
|
---|
| 3135 | RTMemFree(pCtx);
|
---|
| 3136 | }
|
---|
| 3137 |
|
---|
| 3138 |
|
---|
| 3139 | SUPR0DECL(int) SUPR0IoCtlCleanup(PSUPR0IOCTLCTX pCtx)
|
---|
| 3140 | {
|
---|
| 3141 | if (pCtx != NULL)
|
---|
| 3142 | {
|
---|
| 3143 | AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
|
---|
| 3144 | AssertReturn(pCtx->u32Magic == SUPR0IOCTLCTX_MAGIC, VERR_INVALID_PARAMETER);
|
---|
| 3145 |
|
---|
| 3146 | uint32_t cRefs = ASMAtomicDecU32(&pCtx->cRefs);
|
---|
| 3147 | Assert(cRefs < _4K);
|
---|
| 3148 | if (cRefs == 0)
|
---|
| 3149 | supdrvNtIoCtlContextDestroy(pCtx);
|
---|
| 3150 | }
|
---|
| 3151 | return VINF_SUCCESS;
|
---|
| 3152 | }
|
---|
| 3153 |
|
---|
| 3154 |
|
---|
| 3155 | SUPR0DECL(int) SUPR0IoCtlPerform(PSUPR0IOCTLCTX pCtx, uintptr_t uFunction,
|
---|
| 3156 | void *pvInput, RTR3PTR pvInputUser, size_t cbInput,
|
---|
| 3157 | void *pvOutput, RTR3PTR pvOutputUser, size_t cbOutput,
|
---|
| 3158 | int32_t *piNativeRc)
|
---|
| 3159 | {
|
---|
| 3160 | AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
|
---|
| 3161 | AssertReturn(pCtx->u32Magic == SUPR0IOCTLCTX_MAGIC, VERR_INVALID_PARAMETER);
|
---|
| 3162 |
|
---|
| 3163 | /* Reference the context. */
|
---|
| 3164 | uint32_t cRefs = ASMAtomicIncU32(&pCtx->cRefs);
|
---|
| 3165 | Assert(cRefs > 1 && cRefs < _4K);
|
---|
| 3166 |
|
---|
| 3167 | /*
|
---|
| 3168 | * Try fast I/O control path first.
|
---|
| 3169 | */
|
---|
| 3170 | IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
|
---|
| 3171 | if (pCtx->pfnFastIoDeviceControl)
|
---|
| 3172 | {
|
---|
| 3173 | /* Must pass user addresses here as that's what's being expected. */
|
---|
| 3174 | BOOLEAN fHandled = pCtx->pfnFastIoDeviceControl(pCtx->pFileObject,
|
---|
| 3175 | TRUE /*Wait*/,
|
---|
| 3176 | (void *)pvInputUser, (ULONG)cbInput,
|
---|
| 3177 | (void *)pvOutputUser, (ULONG)cbOutput,
|
---|
| 3178 | uFunction,
|
---|
| 3179 | &Ios,
|
---|
| 3180 | pCtx->pDeviceObject);
|
---|
| 3181 | if (fHandled)
|
---|
| 3182 | {
|
---|
| 3183 | /* Relase the context. */
|
---|
| 3184 | cRefs = ASMAtomicDecU32(&pCtx->cRefs);
|
---|
| 3185 | Assert(cRefs < _4K);
|
---|
| 3186 | if (cRefs == 0)
|
---|
| 3187 | supdrvNtIoCtlContextDestroy(pCtx);
|
---|
| 3188 |
|
---|
| 3189 | /* Set/convert status and return. */
|
---|
| 3190 | if (piNativeRc)
|
---|
| 3191 | {
|
---|
| 3192 | *piNativeRc = Ios.Status;
|
---|
| 3193 | return VINF_SUCCESS;
|
---|
| 3194 | }
|
---|
| 3195 | if (NT_SUCCESS(Ios.Status))
|
---|
| 3196 | return VINF_SUCCESS;
|
---|
| 3197 | return RTErrConvertFromNtStatus(Ios.Status);
|
---|
| 3198 | }
|
---|
| 3199 |
|
---|
| 3200 | /*
|
---|
| 3201 | * Fall back on IRP if not handled.
|
---|
| 3202 | *
|
---|
| 3203 | * Note! Perhaps we should rather fail, because VID.SYS will crash getting
|
---|
| 3204 | * the partition ID with the code below. It tries to zero the output
|
---|
| 3205 | * buffer as if it were as system buffer...
|
---|
| 3206 | */
|
---|
| 3207 | RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
|
---|
| 3208 | }
|
---|
| 3209 |
|
---|
| 3210 | /*
|
---|
| 3211 | * For directly accessed buffers we must supply user mode addresses or
|
---|
| 3212 | * we'll fail ProbeForWrite validation.
|
---|
| 3213 | */
|
---|
| 3214 | switch (uFunction & 3)
|
---|
| 3215 | {
|
---|
| 3216 | case METHOD_BUFFERED:
|
---|
| 3217 | /* For buffered accesses, we can supply kernel buffers. */
|
---|
| 3218 | break;
|
---|
| 3219 |
|
---|
| 3220 | case METHOD_IN_DIRECT:
|
---|
| 3221 | pvInput = (void *)pvInputUser;
|
---|
| 3222 | break;
|
---|
| 3223 |
|
---|
| 3224 | case METHOD_NEITHER:
|
---|
| 3225 | pvInput = (void *)pvInputUser;
|
---|
| 3226 | RT_FALL_THRU();
|
---|
| 3227 |
|
---|
| 3228 | case METHOD_OUT_DIRECT:
|
---|
| 3229 | pvOutput = (void *)pvOutputUser;
|
---|
| 3230 | break;
|
---|
| 3231 | }
|
---|
| 3232 |
|
---|
| 3233 | /*
|
---|
| 3234 | * Build the request.
|
---|
| 3235 | */
|
---|
| 3236 | int rc;
|
---|
| 3237 | KEVENT Event;
|
---|
| 3238 | KeInitializeEvent(&Event, NotificationEvent, FALSE);
|
---|
| 3239 |
|
---|
| 3240 | PIRP pIrp = IoBuildDeviceIoControlRequest(uFunction, pCtx->pDeviceObject,
|
---|
| 3241 | pvInput, (ULONG)cbInput, pvOutput, (ULONG)cbOutput,
|
---|
| 3242 | FALSE /* InternalDeviceControl */, &Event, &Ios);
|
---|
| 3243 | if (pIrp)
|
---|
| 3244 | {
|
---|
| 3245 | IoGetNextIrpStackLocation(pIrp)->FileObject = pCtx->pFileObject;
|
---|
| 3246 |
|
---|
| 3247 | /*
|
---|
| 3248 | * Make the call.
|
---|
| 3249 | */
|
---|
| 3250 | NTSTATUS rcNt = IoCallDriver(pCtx->pDeviceObject, pIrp);
|
---|
| 3251 | if (rcNt == STATUS_PENDING)
|
---|
| 3252 | {
|
---|
| 3253 | rcNt = KeWaitForSingleObject(&Event, /* Object */
|
---|
| 3254 | Executive, /* WaitReason */
|
---|
| 3255 | KernelMode, /* WaitMode */
|
---|
| 3256 | FALSE, /* Alertable */
|
---|
| 3257 | NULL); /* TimeOut */
|
---|
| 3258 | AssertMsg(rcNt == STATUS_SUCCESS, ("rcNt=%#x\n", rcNt));
|
---|
| 3259 | rcNt = Ios.Status;
|
---|
| 3260 | }
|
---|
| 3261 | else if (NT_SUCCESS(rcNt) && Ios.Status != STATUS_SUCCESS)
|
---|
| 3262 | rcNt = Ios.Status;
|
---|
| 3263 |
|
---|
| 3264 | /* Set/convert return code. */
|
---|
| 3265 | if (piNativeRc)
|
---|
| 3266 | {
|
---|
| 3267 | *piNativeRc = rcNt;
|
---|
| 3268 | rc = VINF_SUCCESS;
|
---|
| 3269 | }
|
---|
| 3270 | else if (NT_SUCCESS(rcNt))
|
---|
| 3271 | rc = VINF_SUCCESS;
|
---|
| 3272 | else
|
---|
| 3273 | rc = RTErrConvertFromNtStatus(rcNt);
|
---|
| 3274 | }
|
---|
| 3275 | else
|
---|
| 3276 | {
|
---|
| 3277 | if (piNativeRc)
|
---|
| 3278 | *piNativeRc = STATUS_NO_MEMORY;
|
---|
| 3279 | rc = VERR_NO_MEMORY;
|
---|
| 3280 | }
|
---|
| 3281 |
|
---|
| 3282 | /* Relase the context. */
|
---|
| 3283 | cRefs = ASMAtomicDecU32(&pCtx->cRefs);
|
---|
| 3284 | Assert(cRefs < _4K);
|
---|
| 3285 | if (cRefs == 0)
|
---|
| 3286 | supdrvNtIoCtlContextDestroy(pCtx);
|
---|
| 3287 |
|
---|
| 3288 | return rc;
|
---|
| 3289 | }
|
---|
| 3290 |
|
---|
| 3291 |
|
---|
[51770] | 3292 | #ifdef VBOX_WITH_HARDENING
|
---|
| 3293 |
|
---|
| 3294 | /** @name Identifying Special Processes: CSRSS.EXE
|
---|
| 3295 | * @{ */
|
---|
| 3296 |
|
---|
| 3297 |
|
---|
| 3298 | /**
|
---|
| 3299 | * Checks if the process is a system32 process by the given name.
|
---|
| 3300 | *
|
---|
| 3301 | * @returns true / false.
|
---|
| 3302 | * @param pProcess The process to check.
|
---|
| 3303 | * @param pszName The lower case process name (no path!).
|
---|
| 3304 | */
|
---|
| 3305 | static bool supdrvNtProtectIsSystem32ProcessMatch(PEPROCESS pProcess, const char *pszName)
|
---|
| 3306 | {
|
---|
| 3307 | Assert(strlen(pszName) < 16); /* see buffer below */
|
---|
| 3308 |
|
---|
| 3309 | /*
|
---|
| 3310 | * This test works on XP+.
|
---|
| 3311 | */
|
---|
| 3312 | const char *pszImageFile = (const char *)PsGetProcessImageFileName(pProcess);
|
---|
| 3313 | if (!pszImageFile)
|
---|
| 3314 | return false;
|
---|
| 3315 |
|
---|
| 3316 | if (RTStrICmp(pszImageFile, pszName) != 0)
|
---|
| 3317 | return false;
|
---|
| 3318 |
|
---|
| 3319 | /*
|
---|
| 3320 | * This test requires a Vista+ API.
|
---|
| 3321 | */
|
---|
| 3322 | if (g_pfnPsReferenceProcessFilePointer)
|
---|
| 3323 | {
|
---|
| 3324 | PFILE_OBJECT pFile = NULL;
|
---|
| 3325 | NTSTATUS rcNt = g_pfnPsReferenceProcessFilePointer(pProcess, &pFile);
|
---|
| 3326 | if (!NT_SUCCESS(rcNt))
|
---|
| 3327 | return false;
|
---|
| 3328 |
|
---|
| 3329 | union
|
---|
| 3330 | {
|
---|
| 3331 | OBJECT_NAME_INFORMATION Info;
|
---|
| 3332 | uint8_t abBuffer[sizeof(g_System32NtPath) + 16 * sizeof(WCHAR)];
|
---|
| 3333 | } Buf;
|
---|
| 3334 | ULONG cbIgn;
|
---|
| 3335 | rcNt = ObQueryNameString(pFile, &Buf.Info, sizeof(Buf) - sizeof(WCHAR), &cbIgn);
|
---|
| 3336 | ObDereferenceObject(pFile);
|
---|
| 3337 | if (!NT_SUCCESS(rcNt))
|
---|
| 3338 | return false;
|
---|
| 3339 |
|
---|
| 3340 | /* Terminate the name. */
|
---|
| 3341 | PRTUTF16 pwszName = Buf.Info.Name.Buffer;
|
---|
| 3342 | pwszName[Buf.Info.Name.Length / sizeof(RTUTF16)] = '\0';
|
---|
| 3343 |
|
---|
| 3344 | /* Match the name against the system32 directory path. */
|
---|
| 3345 | uint32_t cbSystem32 = g_System32NtPath.UniStr.Length;
|
---|
| 3346 | if (Buf.Info.Name.Length < cbSystem32)
|
---|
| 3347 | return false;
|
---|
| 3348 | if (memcmp(pwszName, g_System32NtPath.UniStr.Buffer, cbSystem32))
|
---|
| 3349 | return false;
|
---|
| 3350 | pwszName += cbSystem32 / sizeof(RTUTF16);
|
---|
| 3351 | if (*pwszName++ != '\\')
|
---|
| 3352 | return false;
|
---|
| 3353 |
|
---|
| 3354 | /* Compare the name. */
|
---|
| 3355 | const char *pszRight = pszName;
|
---|
| 3356 | for (;;)
|
---|
| 3357 | {
|
---|
| 3358 | WCHAR wchLeft = *pwszName++;
|
---|
| 3359 | char chRight = *pszRight++;
|
---|
| 3360 | Assert(chRight == RT_C_TO_LOWER(chRight));
|
---|
| 3361 |
|
---|
| 3362 | if ( wchLeft != chRight
|
---|
| 3363 | && RT_C_TO_LOWER(wchLeft) != chRight)
|
---|
| 3364 | return false;
|
---|
| 3365 | if (!chRight)
|
---|
| 3366 | break;
|
---|
| 3367 | }
|
---|
| 3368 | }
|
---|
| 3369 |
|
---|
| 3370 | return true;
|
---|
| 3371 | }
|
---|
| 3372 |
|
---|
| 3373 |
|
---|
| 3374 | /**
|
---|
| 3375 | * Checks if the current process is likely to be CSRSS.
|
---|
| 3376 | *
|
---|
| 3377 | * @returns true/false.
|
---|
| 3378 | * @param pProcess The process.
|
---|
| 3379 | */
|
---|
| 3380 | static bool supdrvNtProtectIsCsrssByProcess(PEPROCESS pProcess)
|
---|
| 3381 | {
|
---|
| 3382 | /*
|
---|
| 3383 | * On Windows 8.1 CSRSS.EXE is a protected process.
|
---|
| 3384 | */
|
---|
| 3385 | if (g_pfnPsIsProtectedProcessLight)
|
---|
| 3386 | {
|
---|
| 3387 | if (!g_pfnPsIsProtectedProcessLight(pProcess))
|
---|
| 3388 | return false;
|
---|
| 3389 | }
|
---|
| 3390 |
|
---|
| 3391 | /*
|
---|
| 3392 | * The name tests.
|
---|
| 3393 | */
|
---|
| 3394 | if (!supdrvNtProtectIsSystem32ProcessMatch(pProcess, "csrss.exe"))
|
---|
| 3395 | return false;
|
---|
| 3396 |
|
---|
| 3397 | /** @todo Could extend the CSRSS.EXE check with that the TokenUser of the
|
---|
| 3398 | * current process must be "NT AUTHORITY\SYSTEM" (S-1-5-18). */
|
---|
| 3399 |
|
---|
| 3400 | return true;
|
---|
| 3401 | }
|
---|
| 3402 |
|
---|
| 3403 |
|
---|
[52737] | 3404 | /**
|
---|
| 3405 | * Helper for supdrvNtProtectGetAlpcPortObjectType that tries out a name.
|
---|
| 3406 | *
|
---|
| 3407 | * @returns true if done, false if not.
|
---|
| 3408 | * @param pwszPortNm The port path.
|
---|
| 3409 | * @param ppObjType The object type return variable, updated when
|
---|
| 3410 | * returning true.
|
---|
| 3411 | */
|
---|
[52735] | 3412 | static bool supdrvNtProtectGetAlpcPortObjectType2(PCRTUTF16 pwszPortNm, POBJECT_TYPE *ppObjType)
|
---|
| 3413 | {
|
---|
| 3414 | bool fDone = false;
|
---|
| 3415 |
|
---|
| 3416 | UNICODE_STRING UniStrPortNm;
|
---|
| 3417 | UniStrPortNm.Buffer = (WCHAR *)pwszPortNm;
|
---|
| 3418 | UniStrPortNm.Length = (USHORT)(RTUtf16Len(pwszPortNm) * sizeof(WCHAR));
|
---|
| 3419 | UniStrPortNm.MaximumLength = UniStrPortNm.Length + sizeof(WCHAR);
|
---|
| 3420 |
|
---|
| 3421 | OBJECT_ATTRIBUTES ObjAttr;
|
---|
| 3422 | InitializeObjectAttributes(&ObjAttr, &UniStrPortNm, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);
|
---|
| 3423 |
|
---|
| 3424 | HANDLE hPort;
|
---|
| 3425 | NTSTATUS rcNt = g_pfnZwAlpcCreatePort(&hPort, &ObjAttr, NULL /*pPortAttribs*/);
|
---|
| 3426 | if (NT_SUCCESS(rcNt))
|
---|
| 3427 | {
|
---|
| 3428 | PVOID pvObject;
|
---|
| 3429 | rcNt = ObReferenceObjectByHandle(hPort, 0 /*DesiredAccess*/, NULL /*pObjectType*/,
|
---|
| 3430 | KernelMode, &pvObject, NULL /*pHandleInfo*/);
|
---|
| 3431 | if (NT_SUCCESS(rcNt))
|
---|
| 3432 | {
|
---|
| 3433 | POBJECT_TYPE pObjType = g_pfnObGetObjectType(pvObject);
|
---|
| 3434 | if (pObjType)
|
---|
| 3435 | {
|
---|
[52736] | 3436 | SUPR0Printf("vboxdrv: ALPC Port Object Type %p (vs %p)\n", pObjType, *ppObjType);
|
---|
[52735] | 3437 | *ppObjType = pObjType;
|
---|
| 3438 | fDone = true;
|
---|
| 3439 | }
|
---|
| 3440 | ObDereferenceObject(pvObject);
|
---|
| 3441 | }
|
---|
| 3442 | NtClose(hPort);
|
---|
| 3443 | }
|
---|
| 3444 | return fDone;
|
---|
| 3445 | }
|
---|
| 3446 |
|
---|
| 3447 |
|
---|
[52737] | 3448 | /**
|
---|
| 3449 | * Attempts to retrieve the ALPC Port object type.
|
---|
| 3450 | *
|
---|
| 3451 | * We've had at least three reports that using LpcPortObjectType when trying to
|
---|
| 3452 | * get at the ApiPort object results in STATUS_OBJECT_TYPE_MISMATCH errors.
|
---|
| 3453 | * It's not known who has modified LpcPortObjectType or AlpcPortObjectType (not
|
---|
| 3454 | * exported) so that it differs from the actual ApiPort type, or maybe this
|
---|
| 3455 | * unknown entity is intercepting our attempt to reference the port and
|
---|
| 3456 | * tries to mislead us. The paranoid explanataion is of course that some evil
|
---|
| 3457 | * root kit like software is messing with the OS, however, it's possible that
|
---|
| 3458 | * this is valid kernel behavior that 99.8% of our users and 100% of the
|
---|
| 3459 | * developers are not triggering for some reason.
|
---|
| 3460 | *
|
---|
| 3461 | * The code here creates an ALPC port object and gets it's type. It will cache
|
---|
| 3462 | * the result in g_pAlpcPortObjectType2 on success.
|
---|
| 3463 | *
|
---|
| 3464 | * @returns Object type.
|
---|
| 3465 | * @param uSessionId The session id.
|
---|
| 3466 | * @param pszSessionId The session id formatted as a string.
|
---|
| 3467 | */
|
---|
[52735] | 3468 | static POBJECT_TYPE supdrvNtProtectGetAlpcPortObjectType(uint32_t uSessionId, const char *pszSessionId)
|
---|
| 3469 | {
|
---|
| 3470 | POBJECT_TYPE pObjType = *LpcPortObjectType;
|
---|
| 3471 |
|
---|
| 3472 | if ( g_pfnZwAlpcCreatePort
|
---|
| 3473 | && g_pfnObGetObjectType)
|
---|
| 3474 | {
|
---|
| 3475 | int rc;
|
---|
| 3476 | ssize_t cchTmp; NOREF(cchTmp);
|
---|
| 3477 | char szTmp[16];
|
---|
| 3478 | RTUTF16 wszPortNm[128];
|
---|
| 3479 | size_t offRand;
|
---|
| 3480 |
|
---|
| 3481 | /*
|
---|
| 3482 | * First attempt is in the session directory.
|
---|
| 3483 | */
|
---|
| 3484 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\Sessions\\");
|
---|
| 3485 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), pszSessionId);
|
---|
| 3486 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\VBoxDrv-");
|
---|
| 3487 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), (uint32_t)(uintptr_t)PsGetProcessId(PsGetCurrentProcess()), 16, 0, 0, 0);
|
---|
| 3488 | Assert(cchTmp > 0);
|
---|
| 3489 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3490 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "-");
|
---|
| 3491 | offRand = RTUtf16Len(wszPortNm);
|
---|
| 3492 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 3493 | Assert(cchTmp > 0);
|
---|
| 3494 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3495 | AssertRCSuccess(rc);
|
---|
| 3496 |
|
---|
| 3497 | bool fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 3498 | if (!fDone)
|
---|
| 3499 | {
|
---|
| 3500 | wszPortNm[offRand] = '\0';
|
---|
| 3501 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0); Assert(cchTmp > 0);
|
---|
| 3502 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3503 | AssertRCSuccess(rc);
|
---|
| 3504 |
|
---|
| 3505 | fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 3506 | }
|
---|
| 3507 | if (!fDone)
|
---|
| 3508 | {
|
---|
| 3509 | /*
|
---|
| 3510 | * Try base names.
|
---|
| 3511 | */
|
---|
| 3512 | if (uSessionId == 0)
|
---|
| 3513 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\BaseNamedObjects\\VBoxDrv-");
|
---|
| 3514 | else
|
---|
| 3515 | {
|
---|
| 3516 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\Sessions\\");
|
---|
| 3517 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), pszSessionId);
|
---|
| 3518 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\BaseNamedObjects\\VBoxDrv-");
|
---|
| 3519 | }
|
---|
| 3520 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), (uint32_t)(uintptr_t)PsGetProcessId(PsGetCurrentProcess()), 16, 0, 0, 0);
|
---|
| 3521 | Assert(cchTmp > 0);
|
---|
| 3522 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3523 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "-");
|
---|
| 3524 | offRand = RTUtf16Len(wszPortNm);
|
---|
| 3525 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 3526 | Assert(cchTmp > 0);
|
---|
| 3527 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3528 | AssertRCSuccess(rc);
|
---|
| 3529 |
|
---|
[84394] | 3530 | fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
[52735] | 3531 | if (!fDone)
|
---|
| 3532 | {
|
---|
| 3533 | wszPortNm[offRand] = '\0';
|
---|
| 3534 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 3535 | Assert(cchTmp > 0);
|
---|
| 3536 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 3537 | AssertRCSuccess(rc);
|
---|
| 3538 |
|
---|
| 3539 | fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 3540 | }
|
---|
| 3541 | }
|
---|
| 3542 |
|
---|
| 3543 | /* Cache the result in g_pAlpcPortObjectType2. */
|
---|
| 3544 | if ( g_pAlpcPortObjectType2 == NULL
|
---|
| 3545 | && pObjType != g_pAlpcPortObjectType1
|
---|
| 3546 | && fDone)
|
---|
| 3547 | g_pAlpcPortObjectType2 = pObjType;
|
---|
| 3548 |
|
---|
| 3549 | }
|
---|
| 3550 |
|
---|
| 3551 | return pObjType;
|
---|
| 3552 | }
|
---|
| 3553 |
|
---|
| 3554 |
|
---|
[51770] | 3555 | /**
|
---|
| 3556 | * Called in the context of VBoxDrvNtCreate to determin the CSRSS for the
|
---|
| 3557 | * current process.
|
---|
| 3558 | *
|
---|
| 3559 | * The Client/Server Runtime Subsystem (CSRSS) process needs to be allowed some
|
---|
| 3560 | * additional access right so we need to make 101% sure we correctly identify
|
---|
| 3561 | * the CSRSS process a process is associated with.
|
---|
| 3562 | *
|
---|
| 3563 | * @returns IPRT status code.
|
---|
| 3564 | * @param pNtProtect The NT protected process structure. The
|
---|
| 3565 | * hCsrssPid member will be updated on success.
|
---|
| 3566 | */
|
---|
| 3567 | static int supdrvNtProtectFindAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 3568 | {
|
---|
| 3569 | Assert(pNtProtect->AvlCore.Key == PsGetCurrentProcessId());
|
---|
| 3570 | Assert(pNtProtect->pCsrssProcess == NULL);
|
---|
| 3571 | Assert(pNtProtect->hCsrssPid == NULL);
|
---|
| 3572 |
|
---|
| 3573 | /*
|
---|
| 3574 | * We'll try use the ApiPort LPC object for the session we're in to track
|
---|
| 3575 | * down the CSRSS process. So, we start by constructing a path to it.
|
---|
| 3576 | */
|
---|
[52735] | 3577 | int rc;
|
---|
[51770] | 3578 | uint32_t uSessionId = PsGetProcessSessionId(PsGetCurrentProcess());
|
---|
[52735] | 3579 | char szSessionId[16];
|
---|
[51770] | 3580 | WCHAR wszApiPort[48];
|
---|
| 3581 | if (uSessionId == 0)
|
---|
[52735] | 3582 | {
|
---|
| 3583 | szSessionId[0] = '0';
|
---|
| 3584 | szSessionId[1] = '\0';
|
---|
[51770] | 3585 | rc = RTUtf16CopyAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Windows\\ApiPort");
|
---|
[52735] | 3586 | }
|
---|
[51770] | 3587 | else
|
---|
| 3588 | {
|
---|
[52735] | 3589 | ssize_t cchTmp = RTStrFormatU32(szSessionId, sizeof(szSessionId), uSessionId, 10, 0, 0, 0);
|
---|
[51770] | 3590 | AssertReturn(cchTmp > 0, (int)cchTmp);
|
---|
| 3591 | rc = RTUtf16CopyAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Sessions\\");
|
---|
| 3592 | if (RT_SUCCESS(rc))
|
---|
[52735] | 3593 | rc = RTUtf16CatAscii(wszApiPort, RT_ELEMENTS(wszApiPort), szSessionId);
|
---|
[51770] | 3594 | if (RT_SUCCESS(rc))
|
---|
| 3595 | rc = RTUtf16CatAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Windows\\ApiPort");
|
---|
| 3596 | }
|
---|
| 3597 | AssertRCReturn(rc, rc);
|
---|
| 3598 |
|
---|
| 3599 | UNICODE_STRING ApiPortStr;
|
---|
| 3600 | ApiPortStr.Buffer = wszApiPort;
|
---|
| 3601 | ApiPortStr.Length = (USHORT)(RTUtf16Len(wszApiPort) * sizeof(RTUTF16));
|
---|
| 3602 | ApiPortStr.MaximumLength = ApiPortStr.Length + sizeof(RTUTF16);
|
---|
| 3603 |
|
---|
| 3604 | /*
|
---|
| 3605 | * The object cannot be opened, but we can reference it by name.
|
---|
| 3606 | */
|
---|
| 3607 | void *pvApiPortObj = NULL;
|
---|
| 3608 | NTSTATUS rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 3609 | 0,
|
---|
| 3610 | NULL /*pAccessState*/,
|
---|
| 3611 | STANDARD_RIGHTS_READ,
|
---|
[52735] | 3612 | g_pAlpcPortObjectType1,
|
---|
[51770] | 3613 | KernelMode,
|
---|
| 3614 | NULL /*pvParseContext*/,
|
---|
| 3615 | &pvApiPortObj);
|
---|
[52735] | 3616 | if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH
|
---|
| 3617 | && g_pAlpcPortObjectType2 != NULL)
|
---|
| 3618 | rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 3619 | 0,
|
---|
| 3620 | NULL /*pAccessState*/,
|
---|
| 3621 | STANDARD_RIGHTS_READ,
|
---|
| 3622 | g_pAlpcPortObjectType2,
|
---|
| 3623 | KernelMode,
|
---|
| 3624 | NULL /*pvParseContext*/,
|
---|
| 3625 | &pvApiPortObj);
|
---|
| 3626 | if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH
|
---|
| 3627 | && g_pfnObGetObjectType
|
---|
| 3628 | && g_pfnZwAlpcCreatePort)
|
---|
| 3629 | rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 3630 | 0,
|
---|
| 3631 | NULL /*pAccessState*/,
|
---|
| 3632 | STANDARD_RIGHTS_READ,
|
---|
| 3633 | supdrvNtProtectGetAlpcPortObjectType(uSessionId, szSessionId),
|
---|
| 3634 | KernelMode,
|
---|
| 3635 | NULL /*pvParseContext*/,
|
---|
| 3636 | &pvApiPortObj);
|
---|
[51770] | 3637 | if (!NT_SUCCESS(rcNt))
|
---|
| 3638 | {
|
---|
| 3639 | SUPR0Printf("vboxdrv: Error opening '%ls': %#x\n", wszApiPort, rcNt);
|
---|
[52735] | 3640 | return rcNt == STATUS_OBJECT_TYPE_MISMATCH ? VERR_SUPDRV_APIPORT_OPEN_ERROR_TYPE : VERR_SUPDRV_APIPORT_OPEN_ERROR;
|
---|
[51770] | 3641 | }
|
---|
| 3642 |
|
---|
| 3643 | /*
|
---|
| 3644 | * Query the processes in the system so we can locate CSRSS.EXE candidates.
|
---|
| 3645 | * Note! Attempts at using SystemSessionProcessInformation failed with
|
---|
| 3646 | * STATUS_ACCESS_VIOLATION.
|
---|
[51918] | 3647 | * Note! The 32 bytes on the size of to counteract the allocation header
|
---|
| 3648 | * that rtR0MemAllocEx slaps on everything.
|
---|
[51770] | 3649 | */
|
---|
[51918] | 3650 | ULONG cbNeeded = _64K - 32;
|
---|
[51770] | 3651 | uint32_t cbBuf;
|
---|
| 3652 | uint8_t *pbBuf = NULL;
|
---|
| 3653 | do
|
---|
| 3654 | {
|
---|
[51918] | 3655 | cbBuf = RT_ALIGN(cbNeeded + _4K, _64K) - 32;
|
---|
[51770] | 3656 | pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 3657 | if (!pbBuf)
|
---|
| 3658 | break;
|
---|
| 3659 |
|
---|
| 3660 | cbNeeded = 0;
|
---|
| 3661 | #if 0 /* doesn't work. */
|
---|
| 3662 | SYSTEM_SESSION_PROCESS_INFORMATION Req;
|
---|
| 3663 | Req.SessionId = uSessionId;
|
---|
| 3664 | Req.BufferLength = cbBuf;
|
---|
| 3665 | Req.Buffer = pbBuf;
|
---|
| 3666 | rcNt = NtQuerySystemInformation(SystemSessionProcessInformation, &Req, sizeof(Req), &cbNeeded);
|
---|
| 3667 | #else
|
---|
| 3668 | rcNt = NtQuerySystemInformation(SystemProcessInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 3669 | #endif
|
---|
| 3670 | if (NT_SUCCESS(rcNt))
|
---|
| 3671 | break;
|
---|
| 3672 |
|
---|
| 3673 | RTMemFree(pbBuf);
|
---|
| 3674 | pbBuf = NULL;
|
---|
| 3675 | } while ( rcNt == STATUS_INFO_LENGTH_MISMATCH
|
---|
| 3676 | && cbNeeded > cbBuf
|
---|
| 3677 | && cbNeeded < 32U*_1M);
|
---|
| 3678 |
|
---|
| 3679 | if ( pbBuf
|
---|
| 3680 | && NT_SUCCESS(rcNt)
|
---|
| 3681 | && cbNeeded >= sizeof(SYSTEM_PROCESS_INFORMATION))
|
---|
| 3682 | {
|
---|
| 3683 | /*
|
---|
| 3684 | * Walk the returned data and look for the process associated with the
|
---|
| 3685 | * ApiPort object. The ApiPort object keeps the EPROCESS address of
|
---|
| 3686 | * the owner process (i.e. CSRSS) relatively early in the structure. On
|
---|
| 3687 | * 64-bit windows 8.1 it's at offset 0x18. So, obtain the EPROCESS
|
---|
| 3688 | * pointer to likely CSRSS processes and check for a match in the first
|
---|
| 3689 | * 0x40 bytes of the ApiPort object.
|
---|
| 3690 | */
|
---|
| 3691 | rc = VERR_SUPDRV_CSRSS_NOT_FOUND;
|
---|
| 3692 | for (uint32_t offBuf = 0; offBuf <= cbNeeded - sizeof(SYSTEM_PROCESS_INFORMATION);)
|
---|
| 3693 | {
|
---|
| 3694 | PRTNT_SYSTEM_PROCESS_INFORMATION pProcInfo = (PRTNT_SYSTEM_PROCESS_INFORMATION)&pbBuf[offBuf];
|
---|
| 3695 | if ( pProcInfo->ProcessName.Length == 9 * sizeof(WCHAR)
|
---|
| 3696 | && pProcInfo->NumberOfThreads > 2 /* Very low guess. */
|
---|
| 3697 | && pProcInfo->HandleCount > 32 /* Very low guess, I hope. */
|
---|
| 3698 | && (uintptr_t)pProcInfo->ProcessName.Buffer - (uintptr_t)pbBuf < cbNeeded
|
---|
| 3699 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[0]) == 'c'
|
---|
| 3700 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[1]) == 's'
|
---|
| 3701 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[2]) == 'r'
|
---|
| 3702 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[3]) == 's'
|
---|
| 3703 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[4]) == 's'
|
---|
| 3704 | && pProcInfo->ProcessName.Buffer[5] == '.'
|
---|
| 3705 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[6]) == 'e'
|
---|
| 3706 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[7]) == 'x'
|
---|
| 3707 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[8]) == 'e' )
|
---|
| 3708 | {
|
---|
| 3709 |
|
---|
| 3710 | /* Get the process structure and perform some more thorough
|
---|
| 3711 | process checks. */
|
---|
| 3712 | PEPROCESS pProcess;
|
---|
| 3713 | rcNt = PsLookupProcessByProcessId(pProcInfo->UniqueProcessId, &pProcess);
|
---|
| 3714 | if (NT_SUCCESS(rcNt))
|
---|
| 3715 | {
|
---|
| 3716 | if (supdrvNtProtectIsCsrssByProcess(pProcess))
|
---|
| 3717 | {
|
---|
| 3718 | if (PsGetProcessSessionId(pProcess) == uSessionId)
|
---|
| 3719 | {
|
---|
| 3720 | /* Final test, check the ApiPort.
|
---|
| 3721 | Note! The old LPC (pre Vista) objects has the PID
|
---|
| 3722 | much earlier in the structure. Might be
|
---|
| 3723 | worth looking for it instead. */
|
---|
| 3724 | bool fThatsIt = false;
|
---|
| 3725 | __try
|
---|
| 3726 | {
|
---|
| 3727 | PEPROCESS *ppPortProc = (PEPROCESS *)pvApiPortObj;
|
---|
| 3728 | uint32_t cTests = g_uNtVerCombined >= SUP_NT_VER_VISTA ? 16 : 38; /* ALPC since Vista. */
|
---|
| 3729 | do
|
---|
| 3730 | {
|
---|
| 3731 | fThatsIt = *ppPortProc == pProcess;
|
---|
| 3732 | ppPortProc++;
|
---|
| 3733 | } while (!fThatsIt && --cTests > 0);
|
---|
| 3734 | }
|
---|
| 3735 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 3736 | {
|
---|
| 3737 | fThatsIt = false;
|
---|
| 3738 | }
|
---|
| 3739 | if (fThatsIt)
|
---|
| 3740 | {
|
---|
| 3741 | /* Ok, we found it! Keep the process structure
|
---|
| 3742 | reference as well as the PID so we can
|
---|
| 3743 | safely identify it later on. */
|
---|
| 3744 | pNtProtect->hCsrssPid = pProcInfo->UniqueProcessId;
|
---|
| 3745 | pNtProtect->pCsrssProcess = pProcess;
|
---|
| 3746 | rc = VINF_SUCCESS;
|
---|
| 3747 | break;
|
---|
| 3748 | }
|
---|
| 3749 | }
|
---|
| 3750 | }
|
---|
| 3751 |
|
---|
| 3752 | ObDereferenceObject(pProcess);
|
---|
| 3753 | }
|
---|
| 3754 | }
|
---|
| 3755 |
|
---|
| 3756 | /* Advance. */
|
---|
| 3757 | if (!pProcInfo->NextEntryOffset)
|
---|
| 3758 | break;
|
---|
| 3759 | offBuf += pProcInfo->NextEntryOffset;
|
---|
| 3760 | }
|
---|
| 3761 | }
|
---|
| 3762 | else
|
---|
| 3763 | rc = VERR_SUPDRV_SESSION_PROCESS_ENUM_ERROR;
|
---|
| 3764 | RTMemFree(pbBuf);
|
---|
| 3765 | ObDereferenceObject(pvApiPortObj);
|
---|
| 3766 | return rc;
|
---|
| 3767 | }
|
---|
| 3768 |
|
---|
| 3769 |
|
---|
| 3770 | /**
|
---|
| 3771 | * Checks that the given process is the CSRSS process associated with protected
|
---|
| 3772 | * process.
|
---|
| 3773 | *
|
---|
| 3774 | * @returns true / false.
|
---|
| 3775 | * @param pNtProtect The NT protection structure.
|
---|
| 3776 | * @param pCsrss The process structure of the alleged CSRSS.EXE
|
---|
| 3777 | * process.
|
---|
| 3778 | */
|
---|
| 3779 | static bool supdrvNtProtectIsAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect, PEPROCESS pCsrss)
|
---|
| 3780 | {
|
---|
| 3781 | if (pNtProtect->pCsrssProcess == pCsrss)
|
---|
| 3782 | {
|
---|
| 3783 | if (pNtProtect->hCsrssPid == PsGetProcessId(pCsrss))
|
---|
| 3784 | {
|
---|
| 3785 | return true;
|
---|
| 3786 | }
|
---|
| 3787 | }
|
---|
| 3788 | return false;
|
---|
| 3789 | }
|
---|
| 3790 |
|
---|
| 3791 |
|
---|
| 3792 | /**
|
---|
| 3793 | * Checks if the given process is the stupid themes service.
|
---|
| 3794 | *
|
---|
| 3795 | * The caller does some screening of access masks and what not. We do the rest.
|
---|
| 3796 | *
|
---|
| 3797 | * @returns true / false.
|
---|
| 3798 | * @param pNtProtect The NT protection structure.
|
---|
| 3799 | * @param pAnnoyingProcess The process structure of an process that might
|
---|
| 3800 | * happen to be the annoying themes process.
|
---|
| 3801 | */
|
---|
| 3802 | static bool supdrvNtProtectIsFrigginThemesService(PSUPDRVNTPROTECT pNtProtect, PEPROCESS pAnnoyingProcess)
|
---|
| 3803 | {
|
---|
[62677] | 3804 | RT_NOREF1(pNtProtect);
|
---|
| 3805 |
|
---|
[51770] | 3806 | /*
|
---|
| 3807 | * Check the process name.
|
---|
| 3808 | */
|
---|
| 3809 | if (!supdrvNtProtectIsSystem32ProcessMatch(pAnnoyingProcess, "svchost.exe"))
|
---|
| 3810 | return false;
|
---|
| 3811 |
|
---|
| 3812 | /** @todo Come up with more checks. */
|
---|
| 3813 |
|
---|
| 3814 | return true;
|
---|
| 3815 | }
|
---|
| 3816 |
|
---|
| 3817 |
|
---|
[52387] | 3818 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 3819 | /**
|
---|
| 3820 | * Checks if the given process is one of the whitelisted debuggers.
|
---|
| 3821 | *
|
---|
| 3822 | * @returns true / false.
|
---|
| 3823 | * @param pProcess The process to check.
|
---|
| 3824 | */
|
---|
| 3825 | static bool supdrvNtProtectIsWhitelistedDebugger(PEPROCESS pProcess)
|
---|
| 3826 | {
|
---|
| 3827 | const char *pszImageFile = (const char *)PsGetProcessImageFileName(pProcess);
|
---|
| 3828 | if (!pszImageFile)
|
---|
| 3829 | return false;
|
---|
| 3830 |
|
---|
| 3831 | if (pszImageFile[0] == 'w' || pszImageFile[0] == 'W')
|
---|
| 3832 | {
|
---|
| 3833 | if (RTStrICmp(pszImageFile, "windbg.exe") == 0)
|
---|
| 3834 | return true;
|
---|
| 3835 | if (RTStrICmp(pszImageFile, "werfault.exe") == 0)
|
---|
| 3836 | return true;
|
---|
| 3837 | if (RTStrICmp(pszImageFile, "werfaultsecure.exe") == 0)
|
---|
| 3838 | return true;
|
---|
| 3839 | }
|
---|
| 3840 | else if (pszImageFile[0] == 'd' || pszImageFile[0] == 'D')
|
---|
| 3841 | {
|
---|
| 3842 | if (RTStrICmp(pszImageFile, "drwtsn32.exe") == 0)
|
---|
| 3843 | return true;
|
---|
| 3844 | if (RTStrICmp(pszImageFile, "dwwin.exe") == 0)
|
---|
| 3845 | return true;
|
---|
| 3846 | }
|
---|
| 3847 |
|
---|
| 3848 | return false;
|
---|
| 3849 | }
|
---|
| 3850 | #endif /* VBOX_WITHOUT_DEBUGGER_CHECKS */
|
---|
| 3851 |
|
---|
| 3852 |
|
---|
[51770] | 3853 | /** @} */
|
---|
| 3854 |
|
---|
| 3855 |
|
---|
| 3856 | /** @name Process Creation Callbacks.
|
---|
| 3857 | * @{ */
|
---|
| 3858 |
|
---|
[53002] | 3859 |
|
---|
[51770] | 3860 | /**
|
---|
[53002] | 3861 | * Cleans up VBoxDrv or VBoxDrvStub error info not collected by the dead process.
|
---|
| 3862 | *
|
---|
| 3863 | * @param hProcessId The ID of the dead process.
|
---|
| 3864 | */
|
---|
| 3865 | static void supdrvNtErrorInfoCleanupProcess(HANDLE hProcessId)
|
---|
| 3866 | {
|
---|
| 3867 | int rc = RTSemMutexRequestNoResume(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 3868 | if (RT_SUCCESS(rc))
|
---|
| 3869 | {
|
---|
| 3870 | PSUPDRVNTERRORINFO pCur, pNext;
|
---|
| 3871 | RTListForEachSafe(&g_ErrorInfoHead, pCur, pNext, SUPDRVNTERRORINFO, ListEntry)
|
---|
| 3872 | {
|
---|
| 3873 | if (pCur->hProcessId == hProcessId)
|
---|
| 3874 | {
|
---|
| 3875 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 3876 | RTMemFree(pCur);
|
---|
| 3877 | }
|
---|
| 3878 | }
|
---|
| 3879 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 3880 | }
|
---|
| 3881 | }
|
---|
| 3882 |
|
---|
| 3883 |
|
---|
| 3884 | /**
|
---|
[51770] | 3885 | * Common worker used by the process creation hooks as well as the process
|
---|
| 3886 | * handle creation hooks to check if a VM process is being created.
|
---|
| 3887 | *
|
---|
| 3888 | * @returns true if likely to be a VM process, false if not.
|
---|
| 3889 | * @param pNtStub The NT protection structure for the possible
|
---|
| 3890 | * stub process.
|
---|
| 3891 | * @param hParentPid The parent pid.
|
---|
| 3892 | * @param hChildPid The child pid.
|
---|
| 3893 | */
|
---|
| 3894 | static bool supdrvNtProtectIsSpawningStubProcess(PSUPDRVNTPROTECT pNtStub, HANDLE hParentPid, HANDLE hChildPid)
|
---|
| 3895 | {
|
---|
| 3896 | bool fRc = false;
|
---|
| 3897 | if (pNtStub->AvlCore.Key == hParentPid) /* paranoia */
|
---|
| 3898 | {
|
---|
| 3899 | if (pNtStub->enmProcessKind == kSupDrvNtProtectKind_StubSpawning)
|
---|
| 3900 | {
|
---|
| 3901 | /* Compare short names. */
|
---|
| 3902 | PEPROCESS pStubProcess;
|
---|
| 3903 | NTSTATUS rcNt = PsLookupProcessByProcessId(hParentPid, &pStubProcess);
|
---|
| 3904 | if (NT_SUCCESS(rcNt))
|
---|
| 3905 | {
|
---|
| 3906 | PEPROCESS pChildProcess;
|
---|
| 3907 | rcNt = PsLookupProcessByProcessId(hChildPid, &pChildProcess);
|
---|
| 3908 | if (NT_SUCCESS(rcNt))
|
---|
| 3909 | {
|
---|
| 3910 | const char *pszStub = (const char *)PsGetProcessImageFileName(pStubProcess);
|
---|
| 3911 | const char *pszChild = (const char *)PsGetProcessImageFileName(pChildProcess);
|
---|
| 3912 | fRc = pszStub != NULL
|
---|
| 3913 | && pszChild != NULL
|
---|
| 3914 | && strcmp(pszStub, pszChild) == 0;
|
---|
| 3915 |
|
---|
| 3916 | /** @todo check that the full image names matches. */
|
---|
| 3917 |
|
---|
| 3918 | ObDereferenceObject(pChildProcess);
|
---|
| 3919 | }
|
---|
| 3920 | ObDereferenceObject(pStubProcess);
|
---|
| 3921 | }
|
---|
| 3922 | }
|
---|
| 3923 | }
|
---|
| 3924 | return fRc;
|
---|
| 3925 | }
|
---|
| 3926 |
|
---|
| 3927 |
|
---|
| 3928 | /**
|
---|
| 3929 | * Common code used by the notifies to protect a child process.
|
---|
| 3930 | *
|
---|
| 3931 | * @returns VBox status code.
|
---|
| 3932 | * @param pNtStub The NT protect structure for the parent.
|
---|
| 3933 | * @param hChildPid The child pid.
|
---|
| 3934 | */
|
---|
| 3935 | static int supdrvNtProtectProtectNewStubChild(PSUPDRVNTPROTECT pNtParent, HANDLE hChildPid)
|
---|
| 3936 | {
|
---|
| 3937 | /*
|
---|
| 3938 | * Create a child protection struction.
|
---|
| 3939 | */
|
---|
| 3940 | PSUPDRVNTPROTECT pNtChild;
|
---|
| 3941 | int rc = supdrvNtProtectCreate(&pNtChild, hChildPid, kSupDrvNtProtectKind_VmProcessUnconfirmed, false /*fLink*/);
|
---|
| 3942 | if (RT_SUCCESS(rc))
|
---|
| 3943 | {
|
---|
| 3944 | pNtChild->fFirstProcessCreateHandle = true;
|
---|
| 3945 | pNtChild->fFirstThreadCreateHandle = true;
|
---|
| 3946 | pNtChild->fCsrssFirstProcessCreateHandle = true;
|
---|
[52905] | 3947 | pNtChild->cCsrssFirstProcessDuplicateHandle = ARCH_BITS == 32 ? 2 : 1;
|
---|
[51770] | 3948 | pNtChild->fThemesFirstProcessCreateHandle = true;
|
---|
| 3949 | pNtChild->hParentPid = pNtParent->AvlCore.Key;
|
---|
| 3950 | pNtChild->hCsrssPid = pNtParent->hCsrssPid;
|
---|
| 3951 | pNtChild->pCsrssProcess = pNtParent->pCsrssProcess;
|
---|
| 3952 | if (pNtChild->pCsrssProcess)
|
---|
| 3953 | ObReferenceObject(pNtChild->pCsrssProcess);
|
---|
| 3954 |
|
---|
| 3955 | /*
|
---|
| 3956 | * Take the spinlock, recheck parent conditions and link things.
|
---|
| 3957 | */
|
---|
| 3958 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 3959 | if (pNtParent->enmProcessKind == kSupDrvNtProtectKind_StubSpawning)
|
---|
| 3960 | {
|
---|
| 3961 | bool fSuccess = RTAvlPVInsert(&g_NtProtectTree, &pNtChild->AvlCore);
|
---|
| 3962 | if (fSuccess)
|
---|
| 3963 | {
|
---|
[57303] | 3964 | pNtChild->fInTree = true;
|
---|
[51770] | 3965 | pNtParent->u.pChild = pNtChild; /* Parent keeps the initial reference. */
|
---|
| 3966 | pNtParent->enmProcessKind = kSupDrvNtProtectKind_StubParent;
|
---|
| 3967 | pNtChild->u.pParent = pNtParent;
|
---|
| 3968 |
|
---|
| 3969 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3970 | return VINF_SUCCESS;
|
---|
| 3971 | }
|
---|
| 3972 |
|
---|
| 3973 | rc = VERR_INTERNAL_ERROR_2;
|
---|
| 3974 | }
|
---|
| 3975 | else
|
---|
| 3976 | rc = VERR_WRONG_ORDER;
|
---|
[53329] | 3977 | pNtChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
[51770] | 3978 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3979 |
|
---|
| 3980 | supdrvNtProtectRelease(pNtChild);
|
---|
| 3981 | }
|
---|
| 3982 | return rc;
|
---|
| 3983 | }
|
---|
| 3984 |
|
---|
| 3985 |
|
---|
| 3986 | /**
|
---|
| 3987 | * Common process termination code.
|
---|
| 3988 | *
|
---|
| 3989 | * Transitions protected process to the dead states, protecting against handle
|
---|
| 3990 | * PID reuse (esp. with unconfirmed VM processes) and handle cleanup issues.
|
---|
| 3991 | *
|
---|
| 3992 | * @param hDeadPid The PID of the dead process.
|
---|
| 3993 | */
|
---|
| 3994 | static void supdrvNtProtectUnprotectDeadProcess(HANDLE hDeadPid)
|
---|
| 3995 | {
|
---|
| 3996 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(hDeadPid);
|
---|
| 3997 | if (pNtProtect)
|
---|
| 3998 | {
|
---|
| 3999 | PSUPDRVNTPROTECT pNtChild = NULL;
|
---|
| 4000 |
|
---|
| 4001 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4002 |
|
---|
| 4003 | /*
|
---|
| 4004 | * If this is an unconfirmed VM process, we must release the reference
|
---|
| 4005 | * the parent structure holds.
|
---|
| 4006 | */
|
---|
| 4007 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4008 | {
|
---|
| 4009 | PSUPDRVNTPROTECT pNtParent = pNtProtect->u.pParent;
|
---|
| 4010 | AssertRelease(pNtParent); AssertRelease(pNtParent->u.pChild == pNtProtect);
|
---|
| 4011 | pNtParent->u.pChild = NULL;
|
---|
| 4012 | pNtProtect->u.pParent = NULL;
|
---|
| 4013 | pNtChild = pNtProtect;
|
---|
| 4014 | }
|
---|
| 4015 | /*
|
---|
| 4016 | * If this is a stub exitting before the VM process gets confirmed,
|
---|
| 4017 | * release the protection of the potential VM process as this is not
|
---|
| 4018 | * the prescribed behavior.
|
---|
| 4019 | */
|
---|
| 4020 | else if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 4021 | && pNtProtect->u.pChild)
|
---|
| 4022 | {
|
---|
| 4023 | pNtChild = pNtProtect->u.pChild;
|
---|
| 4024 | pNtProtect->u.pChild = NULL;
|
---|
| 4025 | pNtChild->u.pParent = NULL;
|
---|
| 4026 | pNtChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 4027 | }
|
---|
| 4028 |
|
---|
| 4029 | /*
|
---|
| 4030 | * Transition it to the dead state to prevent it from opening the
|
---|
| 4031 | * support driver again or be posthumously abused as a vm process parent.
|
---|
| 4032 | */
|
---|
| 4033 | if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 4034 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 4035 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 4036 | else if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 4037 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubSpawning
|
---|
| 4038 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubUnverified)
|
---|
| 4039 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_StubDead;
|
---|
| 4040 |
|
---|
| 4041 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4042 |
|
---|
| 4043 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 4044 | supdrvNtProtectRelease(pNtChild);
|
---|
| 4045 |
|
---|
| 4046 | /*
|
---|
| 4047 | * Do session cleanups.
|
---|
| 4048 | */
|
---|
| 4049 | AssertReturnVoid((HANDLE)(uintptr_t)RTProcSelf() == hDeadPid);
|
---|
| 4050 | if (g_pDevObjSys)
|
---|
| 4051 | {
|
---|
| 4052 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 4053 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, (RTPROCESS)(uintptr_t)hDeadPid,
|
---|
| 4054 | RTR0ProcHandleSelf(), NULL);
|
---|
| 4055 | if (pSession)
|
---|
| 4056 | {
|
---|
| 4057 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 4058 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 4059 | }
|
---|
| 4060 | }
|
---|
| 4061 | }
|
---|
| 4062 | }
|
---|
| 4063 |
|
---|
| 4064 |
|
---|
| 4065 | /**
|
---|
| 4066 | * Common worker for the process creation callback that verifies a new child
|
---|
| 4067 | * being created by the handle creation callback code.
|
---|
| 4068 | *
|
---|
| 4069 | * @param pNtStub The parent.
|
---|
| 4070 | * @param pNtVm The child.
|
---|
| 4071 | * @param fCallerChecks The result of any additional tests the caller made.
|
---|
| 4072 | * This is in order to avoid duplicating the failure
|
---|
| 4073 | * path code.
|
---|
| 4074 | */
|
---|
| 4075 | static void supdrvNtProtectVerifyNewChildProtection(PSUPDRVNTPROTECT pNtStub, PSUPDRVNTPROTECT pNtVm, bool fCallerChecks)
|
---|
| 4076 | {
|
---|
| 4077 | if ( fCallerChecks
|
---|
| 4078 | && pNtStub->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 4079 | && pNtVm->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 4080 | && pNtVm->u.pParent == pNtStub
|
---|
| 4081 | && pNtStub->u.pChild == pNtVm)
|
---|
| 4082 | {
|
---|
[52423] | 4083 | /* Fine, reset the CSRSS hack (fixes ViRobot APT Shield 2.0 issue). */
|
---|
| 4084 | pNtVm->fFirstProcessCreateHandle = true;
|
---|
[51770] | 4085 | return;
|
---|
| 4086 | }
|
---|
| 4087 |
|
---|
| 4088 | LogRel(("vboxdrv: Misdetected vm stub; hParentPid=%p hChildPid=%p\n", pNtStub->AvlCore.Key, pNtVm->AvlCore.Key));
|
---|
| 4089 | if (pNtStub->enmProcessKind != kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 4090 | supdrvNtProtectUnprotectDeadProcess(pNtVm->AvlCore.Key);
|
---|
| 4091 | }
|
---|
| 4092 |
|
---|
| 4093 |
|
---|
| 4094 | /**
|
---|
| 4095 | * Old style callback (since forever).
|
---|
| 4096 | *
|
---|
| 4097 | * @param hParentPid The parent PID.
|
---|
| 4098 | * @param hNewPid The PID of the new child.
|
---|
| 4099 | * @param fCreated TRUE if it's a creation notification,
|
---|
| 4100 | * FALSE if termination.
|
---|
| 4101 | * @remarks ASSUMES this arrives before the handle creation callback.
|
---|
| 4102 | */
|
---|
| 4103 | static VOID __stdcall
|
---|
| 4104 | supdrvNtProtectCallback_ProcessCreateNotify(HANDLE hParentPid, HANDLE hNewPid, BOOLEAN fCreated)
|
---|
| 4105 | {
|
---|
| 4106 | /*
|
---|
| 4107 | * Is it a new process that needs protection?
|
---|
| 4108 | */
|
---|
| 4109 | if (fCreated)
|
---|
| 4110 | {
|
---|
| 4111 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(hParentPid);
|
---|
| 4112 | if (pNtStub)
|
---|
| 4113 | {
|
---|
| 4114 | PSUPDRVNTPROTECT pNtVm = supdrvNtProtectLookup(hNewPid);
|
---|
| 4115 | if (!pNtVm)
|
---|
| 4116 | {
|
---|
| 4117 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, hParentPid, hNewPid))
|
---|
| 4118 | supdrvNtProtectProtectNewStubChild(pNtStub, hNewPid);
|
---|
| 4119 | }
|
---|
| 4120 | else
|
---|
| 4121 | {
|
---|
| 4122 | supdrvNtProtectVerifyNewChildProtection(pNtStub, pNtVm, true);
|
---|
| 4123 | supdrvNtProtectRelease(pNtVm);
|
---|
| 4124 | }
|
---|
| 4125 | supdrvNtProtectRelease(pNtStub);
|
---|
| 4126 | }
|
---|
| 4127 | }
|
---|
| 4128 | /*
|
---|
| 4129 | * Process termination, do clean ups.
|
---|
| 4130 | */
|
---|
| 4131 | else
|
---|
[53002] | 4132 | {
|
---|
[51770] | 4133 | supdrvNtProtectUnprotectDeadProcess(hNewPid);
|
---|
[53002] | 4134 | supdrvNtErrorInfoCleanupProcess(hNewPid);
|
---|
| 4135 | }
|
---|
[51770] | 4136 | }
|
---|
| 4137 |
|
---|
| 4138 |
|
---|
| 4139 | /**
|
---|
| 4140 | * New style callback (Vista SP1+ / w2k8).
|
---|
| 4141 | *
|
---|
| 4142 | * @param pNewProcess The new process.
|
---|
| 4143 | * @param hNewPid The PID of the new process.
|
---|
| 4144 | * @param pInfo Process creation details. NULL if process
|
---|
| 4145 | * termination notification.
|
---|
| 4146 | * @remarks ASSUMES this arrives before the handle creation callback.
|
---|
| 4147 | */
|
---|
| 4148 | static VOID __stdcall
|
---|
| 4149 | supdrvNtProtectCallback_ProcessCreateNotifyEx(PEPROCESS pNewProcess, HANDLE hNewPid, PPS_CREATE_NOTIFY_INFO pInfo)
|
---|
| 4150 | {
|
---|
[62677] | 4151 | RT_NOREF1(pNewProcess);
|
---|
| 4152 |
|
---|
[51770] | 4153 | /*
|
---|
| 4154 | * Is it a new process that needs protection?
|
---|
| 4155 | */
|
---|
| 4156 | if (pInfo)
|
---|
| 4157 | {
|
---|
| 4158 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(pInfo->CreatingThreadId.UniqueProcess);
|
---|
| 4159 |
|
---|
| 4160 | Log(("vboxdrv/NewProcessEx: ctx=%04zx/%p pid=%04zx ppid=%04zx ctor=%04zx/%04zx rcNt=%#x %.*ls\n",
|
---|
| 4161 | PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
| 4162 | hNewPid, pInfo->ParentProcessId,
|
---|
| 4163 | pInfo->CreatingThreadId.UniqueProcess, pInfo->CreatingThreadId.UniqueThread, pInfo->CreationStatus,
|
---|
| 4164 | pInfo->FileOpenNameAvailable && pInfo->ImageFileName ? (size_t)pInfo->ImageFileName->Length / 2 : 0,
|
---|
| 4165 | pInfo->FileOpenNameAvailable && pInfo->ImageFileName ? pInfo->ImageFileName->Buffer : NULL));
|
---|
| 4166 |
|
---|
| 4167 | if (pNtStub)
|
---|
| 4168 | {
|
---|
| 4169 | PSUPDRVNTPROTECT pNtVm = supdrvNtProtectLookup(hNewPid);
|
---|
| 4170 | if (!pNtVm)
|
---|
| 4171 | {
|
---|
| 4172 | /* Parent must be creator. */
|
---|
| 4173 | if (pInfo->CreatingThreadId.UniqueProcess == pInfo->ParentProcessId)
|
---|
| 4174 | {
|
---|
| 4175 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, pInfo->ParentProcessId, hNewPid))
|
---|
| 4176 | supdrvNtProtectProtectNewStubChild(pNtStub, hNewPid);
|
---|
| 4177 | }
|
---|
| 4178 | }
|
---|
| 4179 | else
|
---|
| 4180 | {
|
---|
| 4181 | /* Parent must be creator (as above). */
|
---|
| 4182 | supdrvNtProtectVerifyNewChildProtection(pNtStub, pNtVm,
|
---|
| 4183 | pInfo->CreatingThreadId.UniqueProcess == pInfo->ParentProcessId);
|
---|
| 4184 | supdrvNtProtectRelease(pNtVm);
|
---|
| 4185 | }
|
---|
| 4186 | supdrvNtProtectRelease(pNtStub);
|
---|
| 4187 | }
|
---|
| 4188 | }
|
---|
| 4189 | /*
|
---|
| 4190 | * Process termination, do clean ups.
|
---|
| 4191 | */
|
---|
| 4192 | else
|
---|
[53002] | 4193 | {
|
---|
[51770] | 4194 | supdrvNtProtectUnprotectDeadProcess(hNewPid);
|
---|
[53002] | 4195 | supdrvNtErrorInfoCleanupProcess(hNewPid);
|
---|
| 4196 | }
|
---|
[51770] | 4197 | }
|
---|
| 4198 |
|
---|
| 4199 | /** @} */
|
---|
| 4200 |
|
---|
| 4201 |
|
---|
| 4202 | /** @name Process Handle Callbacks.
|
---|
| 4203 | * @{ */
|
---|
| 4204 |
|
---|
| 4205 | /** Process rights that we allow for handles to stub and VM processes. */
|
---|
| 4206 | # define SUPDRV_NT_ALLOW_PROCESS_RIGHTS \
|
---|
| 4207 | ( PROCESS_TERMINATE \
|
---|
| 4208 | | PROCESS_VM_READ \
|
---|
| 4209 | | PROCESS_QUERY_INFORMATION \
|
---|
| 4210 | | PROCESS_QUERY_LIMITED_INFORMATION \
|
---|
| 4211 | | PROCESS_SUSPEND_RESUME \
|
---|
| 4212 | | DELETE \
|
---|
| 4213 | | READ_CONTROL \
|
---|
| 4214 | | SYNCHRONIZE)
|
---|
| 4215 |
|
---|
| 4216 | /** Evil process rights. */
|
---|
| 4217 | # define SUPDRV_NT_EVIL_PROCESS_RIGHTS \
|
---|
| 4218 | ( PROCESS_CREATE_THREAD \
|
---|
| 4219 | | PROCESS_SET_SESSIONID /*?*/ \
|
---|
| 4220 | | PROCESS_VM_OPERATION \
|
---|
| 4221 | | PROCESS_VM_WRITE \
|
---|
| 4222 | | PROCESS_DUP_HANDLE \
|
---|
| 4223 | | PROCESS_CREATE_PROCESS /*?*/ \
|
---|
| 4224 | | PROCESS_SET_QUOTA /*?*/ \
|
---|
| 4225 | | PROCESS_SET_INFORMATION \
|
---|
| 4226 | | PROCESS_SET_LIMITED_INFORMATION /*?*/ \
|
---|
| 4227 | | 0)
|
---|
| 4228 | AssertCompile((SUPDRV_NT_ALLOW_PROCESS_RIGHTS & SUPDRV_NT_EVIL_PROCESS_RIGHTS) == 0);
|
---|
| 4229 |
|
---|
| 4230 |
|
---|
| 4231 | static OB_PREOP_CALLBACK_STATUS __stdcall
|
---|
| 4232 | supdrvNtProtectCallback_ProcessHandlePre(PVOID pvUser, POB_PRE_OPERATION_INFORMATION pOpInfo)
|
---|
| 4233 | {
|
---|
[62677] | 4234 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 4235 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 4236 | Assert(pOpInfo->ObjectType == *PsProcessType);
|
---|
| 4237 |
|
---|
| 4238 | /*
|
---|
| 4239 | * Protected? Kludge required for NtOpenProcess calls comming in before
|
---|
| 4240 | * the create process hook triggers on Windows 8.1 (possibly others too).
|
---|
| 4241 | */
|
---|
| 4242 | HANDLE hObjPid = PsGetProcessId((PEPROCESS)pOpInfo->Object);
|
---|
| 4243 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(hObjPid);
|
---|
| 4244 | if (!pNtProtect)
|
---|
| 4245 | {
|
---|
| 4246 | HANDLE hParentPid = PsGetProcessInheritedFromUniqueProcessId((PEPROCESS)pOpInfo->Object);
|
---|
| 4247 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(hParentPid);
|
---|
| 4248 | if (pNtStub)
|
---|
| 4249 | {
|
---|
| 4250 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, hParentPid, hObjPid))
|
---|
| 4251 | {
|
---|
| 4252 | supdrvNtProtectProtectNewStubChild(pNtStub, hObjPid);
|
---|
| 4253 | pNtProtect = supdrvNtProtectLookup(hObjPid);
|
---|
| 4254 | }
|
---|
| 4255 | supdrvNtProtectRelease(pNtStub);
|
---|
| 4256 | }
|
---|
| 4257 | }
|
---|
| 4258 | pOpInfo->CallContext = pNtProtect; /* Just for reference. */
|
---|
| 4259 | if (pNtProtect)
|
---|
| 4260 | {
|
---|
| 4261 | /*
|
---|
| 4262 | * Ok, it's a protected process. Strip rights as required or possible.
|
---|
| 4263 | */
|
---|
| 4264 | static ACCESS_MASK const s_fCsrssStupidDesires = 0x1fffff;
|
---|
| 4265 | ACCESS_MASK fAllowedRights = SUPDRV_NT_ALLOW_PROCESS_RIGHTS;
|
---|
| 4266 |
|
---|
| 4267 | if (pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE)
|
---|
| 4268 | {
|
---|
| 4269 | /* Don't restrict the process accessing itself. */
|
---|
| 4270 | if ((PEPROCESS)pOpInfo->Object == PsGetCurrentProcess())
|
---|
| 4271 | {
|
---|
| 4272 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4273 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 4274 |
|
---|
[52423] | 4275 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 4276 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4277 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 4278 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4279 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4280 | }
|
---|
[52387] | 4281 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 4282 | /* Allow debuggers full access. */
|
---|
| 4283 | else if (supdrvNtProtectIsWhitelistedDebugger(PsGetCurrentProcess()))
|
---|
| 4284 | {
|
---|
| 4285 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4286 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 4287 |
|
---|
[52423] | 4288 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s [debugger]\n",
|
---|
| 4289 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[52387] | 4290 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 4291 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4292 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4293 | }
|
---|
| 4294 | #endif
|
---|
[51770] | 4295 | else
|
---|
| 4296 | {
|
---|
[57303] | 4297 | ACCESS_MASK const fDesiredAccess = pOpInfo->Parameters->CreateHandleInformation.DesiredAccess;
|
---|
| 4298 |
|
---|
[51770] | 4299 | /* Special case 1 on Vista, 7 & 8:
|
---|
| 4300 | The CreateProcess code passes the handle over to CSRSS.EXE
|
---|
| 4301 | and the code inBaseSrvCreateProcess will duplicate the
|
---|
| 4302 | handle with 0x1fffff as access mask. NtDuplicateObject will
|
---|
| 4303 | fail this call before it ever gets down here.
|
---|
| 4304 |
|
---|
| 4305 | Special case 2 on 8.1:
|
---|
| 4306 | The CreateProcess code requires additional rights for
|
---|
| 4307 | something, we'll drop these in the stub code. */
|
---|
| 4308 | if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 4309 | && pNtProtect->fFirstProcessCreateHandle
|
---|
[52135] | 4310 | && pOpInfo->KernelHandle == 0
|
---|
[52425] | 4311 | && pNtProtect->hParentPid == PsGetProcessId(PsGetCurrentProcess())
|
---|
| 4312 | && ExGetPreviousMode() != KernelMode)
|
---|
[51770] | 4313 | {
|
---|
| 4314 | if ( !pOpInfo->KernelHandle
|
---|
[57303] | 4315 | && fDesiredAccess == s_fCsrssStupidDesires)
|
---|
[51770] | 4316 | {
|
---|
| 4317 | if (g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3))
|
---|
| 4318 | fAllowedRights |= s_fCsrssStupidDesires;
|
---|
| 4319 | else
|
---|
| 4320 | fAllowedRights = fAllowedRights
|
---|
| 4321 | | PROCESS_VM_OPERATION
|
---|
| 4322 | | PROCESS_VM_WRITE
|
---|
| 4323 | | PROCESS_SET_INFORMATION
|
---|
| 4324 | | PROCESS_SET_LIMITED_INFORMATION
|
---|
| 4325 | | 0;
|
---|
| 4326 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4327 | }
|
---|
| 4328 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 4329 | }
|
---|
| 4330 |
|
---|
| 4331 | /* Special case 3 on 8.1:
|
---|
| 4332 | The interaction between the CreateProcess code and CSRSS.EXE
|
---|
| 4333 | has changed to the better with Windows 8.1. CSRSS.EXE no
|
---|
| 4334 | longer duplicates the process (thread too) handle, but opens
|
---|
| 4335 | it, thus allowing us to do our job. */
|
---|
| 4336 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 4337 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 4338 | && pNtProtect->fCsrssFirstProcessCreateHandle
|
---|
[52135] | 4339 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 4340 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 4341 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
[51770] | 4342 | {
|
---|
| 4343 | pNtProtect->fCsrssFirstProcessCreateHandle = false;
|
---|
[57303] | 4344 | if (fDesiredAccess == s_fCsrssStupidDesires)
|
---|
[51770] | 4345 | {
|
---|
| 4346 | /* Not needed: PROCESS_CREATE_THREAD, PROCESS_SET_SESSIONID,
|
---|
| 4347 | PROCESS_CREATE_PROCESS */
|
---|
| 4348 | fAllowedRights = fAllowedRights
|
---|
| 4349 | | PROCESS_VM_OPERATION
|
---|
| 4350 | | PROCESS_VM_WRITE
|
---|
| 4351 | | PROCESS_DUP_HANDLE /* Needed for CreateProcess/VBoxTestOGL. */
|
---|
| 4352 | | 0;
|
---|
| 4353 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4354 | }
|
---|
| 4355 | }
|
---|
| 4356 |
|
---|
| 4357 | /* Special case 4, Windows 7, Vista, possibly 8, but not 8.1:
|
---|
| 4358 | The Themes service requires PROCESS_DUP_HANDLE access to our
|
---|
| 4359 | process or we won't get any menus and dialogs will be half
|
---|
| 4360 | unreadable. This is _very_ unfortunate and more work will
|
---|
| 4361 | go into making this more secure. */
|
---|
| 4362 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 0)
|
---|
| 4363 | && g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 2)
|
---|
[57303] | 4364 | && fDesiredAccess == 0x1478 /* 6.1.7600.16385 (win7_rtm.090713-1255) */
|
---|
[51770] | 4365 | && pNtProtect->fThemesFirstProcessCreateHandle
|
---|
[52135] | 4366 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 4367 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 4368 | && supdrvNtProtectIsFrigginThemesService(pNtProtect, PsGetCurrentProcess()) )
|
---|
[51770] | 4369 | {
|
---|
| 4370 | pNtProtect->fThemesFirstProcessCreateHandle = true; /* Only once! */
|
---|
| 4371 | fAllowedRights |= PROCESS_DUP_HANDLE;
|
---|
| 4372 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4373 | }
|
---|
| 4374 |
|
---|
[57303] | 4375 | /* Special case 6a, Windows 10+: AudioDG.exe opens the process with the
|
---|
| 4376 | PROCESS_SET_LIMITED_INFORMATION right. It seems like it need it for
|
---|
| 4377 | some myserious and weirdly placed cpu set management of our process.
|
---|
| 4378 | I'd love to understand what that's all about...
|
---|
| 4379 | Currently playing safe and only grand this right, however limited, to
|
---|
| 4380 | audiodg.exe. */
|
---|
| 4381 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(10, 0)
|
---|
| 4382 | && ( fDesiredAccess == PROCESS_SET_LIMITED_INFORMATION
|
---|
| 4383 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_LIMITED_INFORMATION) /* expected fix #1 */
|
---|
| 4384 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_INFORMATION) /* expected fix #2 */
|
---|
| 4385 | )
|
---|
| 4386 | && pOpInfo->KernelHandle == 0
|
---|
| 4387 | && ExGetPreviousMode() == UserMode
|
---|
| 4388 | && supdrvNtProtectIsSystem32ProcessMatch(PsGetCurrentProcess(), "audiodg.exe") )
|
---|
| 4389 | {
|
---|
| 4390 | fAllowedRights |= PROCESS_SET_LIMITED_INFORMATION;
|
---|
| 4391 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4392 | }
|
---|
| 4393 |
|
---|
[52425] | 4394 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p/pid=%04zx [%d], allow %#x => %#x; %s [prev=%#x]\n",
|
---|
[52423] | 4395 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[57303] | 4396 | fDesiredAccess, pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4397 | fAllowedRights, fDesiredAccess & fAllowedRights,
|
---|
[52425] | 4398 | PsGetProcessImageFileName(PsGetCurrentProcess()), ExGetPreviousMode() ));
|
---|
[51770] | 4399 |
|
---|
| 4400 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 4401 | }
|
---|
| 4402 | }
|
---|
| 4403 | else
|
---|
| 4404 | {
|
---|
| 4405 | /* Don't restrict the process accessing itself. */
|
---|
| 4406 | if ( (PEPROCESS)pOpInfo->Object == PsGetCurrentProcess()
|
---|
| 4407 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == pOpInfo->Object)
|
---|
| 4408 | {
|
---|
| 4409 | Log(("vboxdrv/ProcessHandlePre: ctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 4410 | PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
| 4411 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 4412 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 4413 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 4414 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 4415 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4416 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4417 |
|
---|
| 4418 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4419 | }
|
---|
| 4420 | else
|
---|
| 4421 | {
|
---|
[57303] | 4422 | ACCESS_MASK const fDesiredAccess = pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess;
|
---|
| 4423 |
|
---|
[51770] | 4424 | /* Special case 5 on Vista, 7 & 8:
|
---|
| 4425 | This is the CSRSS.EXE end of special case #1. */
|
---|
| 4426 | if ( g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 4427 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
[52905] | 4428 | && pNtProtect->cCsrssFirstProcessDuplicateHandle > 0
|
---|
[52135] | 4429 | && pOpInfo->KernelHandle == 0
|
---|
[57303] | 4430 | && fDesiredAccess == s_fCsrssStupidDesires
|
---|
[51770] | 4431 | && pNtProtect->hParentPid
|
---|
| 4432 | == PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess)
|
---|
| 4433 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == PsGetCurrentProcess()
|
---|
[52905] | 4434 | && ExGetPreviousMode() == UserMode
|
---|
| 4435 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()))
|
---|
[51770] | 4436 | {
|
---|
[52905] | 4437 | if (ASMAtomicDecS32(&pNtProtect->cCsrssFirstProcessDuplicateHandle) >= 0)
|
---|
[51770] | 4438 | {
|
---|
| 4439 | /* Not needed: PROCESS_CREATE_THREAD, PROCESS_SET_SESSIONID,
|
---|
| 4440 | PROCESS_CREATE_PROCESS, PROCESS_DUP_HANDLE */
|
---|
| 4441 | fAllowedRights = fAllowedRights
|
---|
| 4442 | | PROCESS_VM_OPERATION
|
---|
| 4443 | | PROCESS_VM_WRITE
|
---|
| 4444 | | PROCESS_DUP_HANDLE /* Needed for launching VBoxTestOGL. */
|
---|
| 4445 | | 0;
|
---|
| 4446 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4447 | }
|
---|
| 4448 | }
|
---|
| 4449 |
|
---|
[57303] | 4450 | /* Special case 6b, Windows 10+: AudioDG.exe duplicates the handle it opened above. */
|
---|
| 4451 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(10, 0)
|
---|
| 4452 | && ( fDesiredAccess == PROCESS_SET_LIMITED_INFORMATION
|
---|
| 4453 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_LIMITED_INFORMATION) /* expected fix #1 */
|
---|
| 4454 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_INFORMATION) /* expected fix #2 */
|
---|
| 4455 | )
|
---|
| 4456 | && pOpInfo->KernelHandle == 0
|
---|
| 4457 | && ExGetPreviousMode() == UserMode
|
---|
| 4458 | && supdrvNtProtectIsSystem32ProcessMatch(PsGetCurrentProcess(), "audiodg.exe") )
|
---|
| 4459 | {
|
---|
| 4460 | fAllowedRights |= PROCESS_SET_LIMITED_INFORMATION;
|
---|
| 4461 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4462 | }
|
---|
| 4463 |
|
---|
[52423] | 4464 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 4465 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4466 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 4467 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 4468 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
[57303] | 4469 | fDesiredAccess,
|
---|
[51770] | 4470 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4471 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4472 |
|
---|
| 4473 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 4474 | }
|
---|
| 4475 | }
|
---|
| 4476 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 4477 | }
|
---|
| 4478 |
|
---|
| 4479 | return OB_PREOP_SUCCESS;
|
---|
| 4480 | }
|
---|
| 4481 |
|
---|
| 4482 |
|
---|
| 4483 | static VOID __stdcall
|
---|
| 4484 | supdrvNtProtectCallback_ProcessHandlePost(PVOID pvUser, POB_POST_OPERATION_INFORMATION pOpInfo)
|
---|
| 4485 | {
|
---|
[62677] | 4486 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 4487 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 4488 | Assert(pOpInfo->ObjectType == *PsProcessType);
|
---|
| 4489 |
|
---|
| 4490 | if ( pOpInfo->CallContext
|
---|
| 4491 | && NT_SUCCESS(pOpInfo->ReturnStatus))
|
---|
| 4492 | {
|
---|
| 4493 | ACCESS_MASK const fGrantedAccess = pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE
|
---|
| 4494 | ? pOpInfo->Parameters->CreateHandleInformation.GrantedAccess
|
---|
| 4495 | : pOpInfo->Parameters->DuplicateHandleInformation.GrantedAccess;
|
---|
| 4496 | AssertReleaseMsg( !(fGrantedAccess & ~( SUPDRV_NT_ALLOW_PROCESS_RIGHTS
|
---|
| 4497 | | WRITE_OWNER | WRITE_DAC /* these two might be forced upon us */
|
---|
| 4498 | | PROCESS_UNKNOWN_4000 /* Seen set on win 8.1 */
|
---|
| 4499 | /*| PROCESS_UNKNOWN_8000 */ ) )
|
---|
| 4500 | || pOpInfo->KernelHandle,
|
---|
| 4501 | ("GrantedAccess=%#x - we allow %#x - we did not allow %#x\n",
|
---|
| 4502 | fGrantedAccess, SUPDRV_NT_ALLOW_PROCESS_RIGHTS, fGrantedAccess & ~SUPDRV_NT_ALLOW_PROCESS_RIGHTS));
|
---|
| 4503 | }
|
---|
| 4504 | }
|
---|
| 4505 |
|
---|
| 4506 | # undef SUPDRV_NT_ALLOW_PROCESS_RIGHTS
|
---|
| 4507 |
|
---|
| 4508 | /** @} */
|
---|
| 4509 |
|
---|
| 4510 |
|
---|
| 4511 | /** @name Thread Handle Callbacks
|
---|
| 4512 | * @{ */
|
---|
| 4513 |
|
---|
| 4514 | /* From ntifs.h */
|
---|
| 4515 | extern "C" NTKERNELAPI PEPROCESS __stdcall IoThreadToProcess(PETHREAD);
|
---|
| 4516 |
|
---|
| 4517 | /** Thread rights that we allow for handles to stub and VM processes. */
|
---|
| 4518 | # define SUPDRV_NT_ALLOWED_THREAD_RIGHTS \
|
---|
| 4519 | ( THREAD_TERMINATE \
|
---|
| 4520 | | THREAD_GET_CONTEXT \
|
---|
| 4521 | | THREAD_QUERY_INFORMATION \
|
---|
| 4522 | | THREAD_QUERY_LIMITED_INFORMATION \
|
---|
| 4523 | | DELETE \
|
---|
| 4524 | | READ_CONTROL \
|
---|
| 4525 | | SYNCHRONIZE)
|
---|
| 4526 | /** @todo consider THREAD_SET_LIMITED_INFORMATION & THREAD_RESUME */
|
---|
| 4527 |
|
---|
| 4528 | /** Evil thread rights.
|
---|
| 4529 | * @remarks THREAD_RESUME is not included as it seems to be forced upon us by
|
---|
| 4530 | * Windows 8.1, at least for some processes. We dont' actively
|
---|
| 4531 | * allow it though, just tollerate it when forced to. */
|
---|
| 4532 | # define SUPDRV_NT_EVIL_THREAD_RIGHTS \
|
---|
| 4533 | ( THREAD_SUSPEND_RESUME \
|
---|
| 4534 | | THREAD_SET_CONTEXT \
|
---|
| 4535 | | THREAD_SET_INFORMATION \
|
---|
| 4536 | | THREAD_SET_LIMITED_INFORMATION /*?*/ \
|
---|
| 4537 | | THREAD_SET_THREAD_TOKEN /*?*/ \
|
---|
| 4538 | | THREAD_IMPERSONATE /*?*/ \
|
---|
| 4539 | | THREAD_DIRECT_IMPERSONATION /*?*/ \
|
---|
| 4540 | /*| THREAD_RESUME - see remarks. */ \
|
---|
| 4541 | | 0)
|
---|
| 4542 | AssertCompile((SUPDRV_NT_EVIL_THREAD_RIGHTS & SUPDRV_NT_ALLOWED_THREAD_RIGHTS) == 0);
|
---|
| 4543 |
|
---|
| 4544 |
|
---|
| 4545 | static OB_PREOP_CALLBACK_STATUS __stdcall
|
---|
| 4546 | supdrvNtProtectCallback_ThreadHandlePre(PVOID pvUser, POB_PRE_OPERATION_INFORMATION pOpInfo)
|
---|
| 4547 | {
|
---|
[62677] | 4548 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 4549 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 4550 | Assert(pOpInfo->ObjectType == *PsThreadType);
|
---|
| 4551 |
|
---|
| 4552 | PEPROCESS pProcess = IoThreadToProcess((PETHREAD)pOpInfo->Object);
|
---|
| 4553 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(PsGetProcessId(pProcess));
|
---|
| 4554 | pOpInfo->CallContext = pNtProtect; /* Just for reference. */
|
---|
| 4555 | if (pNtProtect)
|
---|
| 4556 | {
|
---|
| 4557 | static ACCESS_MASK const s_fCsrssStupidDesires = 0x1fffff;
|
---|
| 4558 | ACCESS_MASK fAllowedRights = SUPDRV_NT_ALLOWED_THREAD_RIGHTS;
|
---|
| 4559 |
|
---|
| 4560 | if (pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE)
|
---|
| 4561 | {
|
---|
| 4562 | /* Don't restrict the process accessing its own threads. */
|
---|
| 4563 | if (pProcess == PsGetCurrentProcess())
|
---|
| 4564 | {
|
---|
[52423] | 4565 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] self\n",
|
---|
| 4566 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4567 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 4568 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind));
|
---|
| 4569 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4570 | pNtProtect->fFirstThreadCreateHandle = false;
|
---|
| 4571 | }
|
---|
[52387] | 4572 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 4573 | /* Allow debuggers full access. */
|
---|
| 4574 | else if (supdrvNtProtectIsWhitelistedDebugger(PsGetCurrentProcess()))
|
---|
| 4575 | {
|
---|
[52423] | 4576 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s [debugger]\n",
|
---|
| 4577 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[52387] | 4578 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 4579 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4580 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4581 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4582 | }
|
---|
| 4583 | #endif
|
---|
[51770] | 4584 | else
|
---|
| 4585 | {
|
---|
| 4586 | /* Special case 1 on Vista, 7, 8:
|
---|
| 4587 | The CreateProcess code passes the handle over to CSRSS.EXE
|
---|
| 4588 | and the code inBaseSrvCreateProcess will duplicate the
|
---|
| 4589 | handle with 0x1fffff as access mask. NtDuplicateObject will
|
---|
| 4590 | fail this call before it ever gets down here. */
|
---|
| 4591 | if ( g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 4592 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 4593 | && pNtProtect->fFirstThreadCreateHandle
|
---|
[52135] | 4594 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 4595 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 4596 | && pNtProtect->hParentPid == PsGetProcessId(PsGetCurrentProcess()) )
|
---|
[51770] | 4597 | {
|
---|
| 4598 | if ( !pOpInfo->KernelHandle
|
---|
| 4599 | && pOpInfo->Parameters->CreateHandleInformation.DesiredAccess == s_fCsrssStupidDesires)
|
---|
| 4600 | {
|
---|
| 4601 | fAllowedRights |= s_fCsrssStupidDesires;
|
---|
| 4602 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4603 | }
|
---|
| 4604 | pNtProtect->fFirstThreadCreateHandle = false;
|
---|
| 4605 | }
|
---|
| 4606 |
|
---|
| 4607 | /* Special case 2 on 8.1, possibly also Vista, 7, 8:
|
---|
| 4608 | When creating a process like VBoxTestOGL from the VM process,
|
---|
| 4609 | CSRSS.EXE will try talk to the calling thread and, it
|
---|
| 4610 | appears, impersonate it. We unfortunately need to allow
|
---|
| 4611 | this or there will be no 3D support. Typical DbgPrint:
|
---|
| 4612 | "SXS: BasepCreateActCtx() Calling csrss server failed. Status = 0xc00000a5" */
|
---|
| 4613 | SUPDRVNTPROTECTKIND enmProcessKind;
|
---|
| 4614 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 0, 0, 0)
|
---|
| 4615 | && ( (enmProcessKind = pNtProtect->enmProcessKind) == kSupDrvNtProtectKind_VmProcessConfirmed
|
---|
| 4616 | || enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
[52135] | 4617 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 4618 | && ExGetPreviousMode() == UserMode
|
---|
[51770] | 4619 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
| 4620 | {
|
---|
| 4621 | fAllowedRights |= THREAD_IMPERSONATE;
|
---|
| 4622 | fAllowedRights |= THREAD_DIRECT_IMPERSONATION;
|
---|
| 4623 | //fAllowedRights |= THREAD_SET_LIMITED_INFORMATION; - try without this one
|
---|
| 4624 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4625 | }
|
---|
| 4626 |
|
---|
[52425] | 4627 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d], allow %#x => %#x; %s [prev=%#x]\n",
|
---|
[52423] | 4628 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4629 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 4630 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind, fAllowedRights,
|
---|
| 4631 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess & fAllowedRights,
|
---|
[52425] | 4632 | PsGetProcessImageFileName(PsGetCurrentProcess()), ExGetPreviousMode()));
|
---|
[51770] | 4633 |
|
---|
| 4634 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 4635 | }
|
---|
| 4636 | }
|
---|
| 4637 | else
|
---|
| 4638 | {
|
---|
| 4639 | /* Don't restrict the process accessing its own threads. */
|
---|
| 4640 | if ( pProcess == PsGetCurrentProcess()
|
---|
| 4641 | && (PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == pProcess)
|
---|
| 4642 | {
|
---|
[52423] | 4643 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] self\n",
|
---|
| 4644 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4645 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 4646 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 4647 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 4648 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 4649 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 4650 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4651 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 4652 | }
|
---|
| 4653 | else
|
---|
| 4654 | {
|
---|
| 4655 | /* Special case 3 on Vista, 7, 8:
|
---|
| 4656 | This is the follow up to special case 1. */
|
---|
| 4657 | SUPDRVNTPROTECTKIND enmProcessKind;
|
---|
| 4658 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 0, 0, 0)
|
---|
| 4659 | && ( (enmProcessKind = pNtProtect->enmProcessKind) == kSupDrvNtProtectKind_VmProcessConfirmed
|
---|
| 4660 | || enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4661 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == PsGetCurrentProcess()
|
---|
[52135] | 4662 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 4663 | && ExGetPreviousMode() == UserMode
|
---|
[51770] | 4664 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
| 4665 | {
|
---|
| 4666 | fAllowedRights |= THREAD_IMPERSONATE;
|
---|
| 4667 | fAllowedRights |= THREAD_DIRECT_IMPERSONATION;
|
---|
| 4668 | //fAllowedRights |= THREAD_SET_LIMITED_INFORMATION; - try without this one
|
---|
| 4669 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 4670 | }
|
---|
| 4671 |
|
---|
[52423] | 4672 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d], allow %#x => %#x; %s\n",
|
---|
| 4673 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 4674 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 4675 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 4676 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 4677 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 4678 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind, fAllowedRights,
|
---|
| 4679 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess & fAllowedRights,
|
---|
| 4680 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 4681 |
|
---|
| 4682 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 4683 | }
|
---|
| 4684 | }
|
---|
| 4685 |
|
---|
| 4686 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 4687 | }
|
---|
| 4688 |
|
---|
| 4689 | return OB_PREOP_SUCCESS;
|
---|
| 4690 | }
|
---|
| 4691 |
|
---|
| 4692 |
|
---|
| 4693 | static VOID __stdcall
|
---|
| 4694 | supdrvNtProtectCallback_ThreadHandlePost(PVOID pvUser, POB_POST_OPERATION_INFORMATION pOpInfo)
|
---|
| 4695 | {
|
---|
[62677] | 4696 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 4697 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 4698 | Assert(pOpInfo->ObjectType == *PsThreadType);
|
---|
| 4699 |
|
---|
| 4700 | if ( pOpInfo->CallContext
|
---|
| 4701 | && NT_SUCCESS(pOpInfo->ReturnStatus))
|
---|
| 4702 | {
|
---|
| 4703 | ACCESS_MASK const fGrantedAccess = pOpInfo->Parameters->CreateHandleInformation.GrantedAccess;
|
---|
| 4704 | AssertReleaseMsg( !(fGrantedAccess & ~( SUPDRV_NT_ALLOWED_THREAD_RIGHTS
|
---|
| 4705 | | WRITE_OWNER | WRITE_DAC /* these two might be forced upon us */
|
---|
| 4706 | | THREAD_RESUME /* This seems to be force upon us too with 8.1. */
|
---|
| 4707 | ) )
|
---|
| 4708 | || pOpInfo->KernelHandle,
|
---|
| 4709 | ("GrantedAccess=%#x - we allow %#x - we did not allow %#x\n",
|
---|
| 4710 | fGrantedAccess, SUPDRV_NT_ALLOWED_THREAD_RIGHTS, fGrantedAccess & ~SUPDRV_NT_ALLOWED_THREAD_RIGHTS));
|
---|
| 4711 | }
|
---|
| 4712 | }
|
---|
| 4713 |
|
---|
| 4714 | # undef SUPDRV_NT_ALLOWED_THREAD_RIGHTS
|
---|
| 4715 |
|
---|
| 4716 | /** @} */
|
---|
| 4717 |
|
---|
| 4718 |
|
---|
| 4719 | /**
|
---|
| 4720 | * Creates a new process protection structure.
|
---|
| 4721 | *
|
---|
| 4722 | * @returns VBox status code.
|
---|
| 4723 | * @param ppNtProtect Where to return the pointer to the structure
|
---|
| 4724 | * on success.
|
---|
| 4725 | * @param hPid The process ID of the process to protect.
|
---|
| 4726 | * @param enmProcessKind The kind of process we're protecting.
|
---|
| 4727 | * @param fLink Whether to link the structure into the tree.
|
---|
| 4728 | */
|
---|
| 4729 | static int supdrvNtProtectCreate(PSUPDRVNTPROTECT *ppNtProtect, HANDLE hPid, SUPDRVNTPROTECTKIND enmProcessKind, bool fLink)
|
---|
| 4730 | {
|
---|
| 4731 | AssertReturn(g_hNtProtectLock != NIL_RTSPINLOCK, VERR_WRONG_ORDER);
|
---|
| 4732 |
|
---|
| 4733 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)RTMemAllocZ(sizeof(*pNtProtect));
|
---|
| 4734 | if (!pNtProtect)
|
---|
| 4735 | return VERR_NO_MEMORY;
|
---|
| 4736 |
|
---|
| 4737 | pNtProtect->AvlCore.Key = hPid;
|
---|
| 4738 | pNtProtect->u32Magic = SUPDRVNTPROTECT_MAGIC;
|
---|
| 4739 | pNtProtect->cRefs = 1;
|
---|
| 4740 | pNtProtect->enmProcessKind = enmProcessKind;
|
---|
| 4741 | pNtProtect->hParentPid = NULL;
|
---|
[52962] | 4742 | pNtProtect->hOpenTid = NULL;
|
---|
[51770] | 4743 | pNtProtect->hCsrssPid = NULL;
|
---|
| 4744 | pNtProtect->pCsrssProcess = NULL;
|
---|
| 4745 |
|
---|
| 4746 | if (fLink)
|
---|
| 4747 | {
|
---|
| 4748 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4749 | bool fSuccess = RTAvlPVInsert(&g_NtProtectTree, &pNtProtect->AvlCore);
|
---|
[57303] | 4750 | pNtProtect->fInTree = fSuccess;
|
---|
[51770] | 4751 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4752 |
|
---|
| 4753 | if (!fSuccess)
|
---|
| 4754 | {
|
---|
| 4755 | /* Duplicate entry, fail. */
|
---|
| 4756 | pNtProtect->u32Magic = SUPDRVNTPROTECT_MAGIC_DEAD;
|
---|
[52135] | 4757 | LogRel(("supdrvNtProtectCreate: Duplicate (%#x).\n", pNtProtect->AvlCore.Key));
|
---|
[51770] | 4758 | RTMemFree(pNtProtect);
|
---|
[52135] | 4759 | return VERR_DUPLICATE;
|
---|
[51770] | 4760 | }
|
---|
| 4761 | }
|
---|
| 4762 |
|
---|
| 4763 | *ppNtProtect = pNtProtect;
|
---|
| 4764 | return VINF_SUCCESS;
|
---|
| 4765 | }
|
---|
| 4766 |
|
---|
| 4767 |
|
---|
| 4768 | /**
|
---|
| 4769 | * Releases a reference to a NT protection structure.
|
---|
| 4770 | *
|
---|
| 4771 | * @param pNtProtect The NT protection structure.
|
---|
| 4772 | */
|
---|
| 4773 | static void supdrvNtProtectRelease(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 4774 | {
|
---|
| 4775 | if (!pNtProtect)
|
---|
| 4776 | return;
|
---|
| 4777 | AssertReturnVoid(pNtProtect->u32Magic == SUPDRVNTPROTECT_MAGIC);
|
---|
| 4778 |
|
---|
| 4779 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4780 | uint32_t cRefs = ASMAtomicDecU32(&pNtProtect->cRefs);
|
---|
| 4781 | if (cRefs != 0)
|
---|
| 4782 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4783 | else
|
---|
| 4784 | {
|
---|
| 4785 | /*
|
---|
| 4786 | * That was the last reference. Remove it from the tree, invalidate it
|
---|
| 4787 | * and free the resources associated with it. Also, release any
|
---|
| 4788 | * child/parent references related to this protection structure.
|
---|
| 4789 | */
|
---|
| 4790 | ASMAtomicWriteU32(&pNtProtect->u32Magic, SUPDRVNTPROTECT_MAGIC_DEAD);
|
---|
[57303] | 4791 | if (pNtProtect->fInTree)
|
---|
| 4792 | {
|
---|
| 4793 | PSUPDRVNTPROTECT pRemoved = (PSUPDRVNTPROTECT)RTAvlPVRemove(&g_NtProtectTree, pNtProtect->AvlCore.Key);
|
---|
[62677] | 4794 | Assert(pRemoved == pNtProtect); RT_NOREF_PV(pRemoved);
|
---|
[57303] | 4795 | pNtProtect->fInTree = false;
|
---|
| 4796 | }
|
---|
[51770] | 4797 |
|
---|
| 4798 | PSUPDRVNTPROTECT pChild = NULL;
|
---|
| 4799 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent)
|
---|
| 4800 | {
|
---|
| 4801 | pChild = pNtProtect->u.pChild;
|
---|
| 4802 | if (pChild)
|
---|
| 4803 | {
|
---|
| 4804 | pNtProtect->u.pChild = NULL;
|
---|
| 4805 | pChild->u.pParent = NULL;
|
---|
| 4806 | pChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
[52908] | 4807 | uint32_t cChildRefs = ASMAtomicDecU32(&pChild->cRefs);
|
---|
[51770] | 4808 | if (!cChildRefs)
|
---|
[57303] | 4809 | {
|
---|
| 4810 | Assert(pChild->fInTree);
|
---|
| 4811 | if (pChild->fInTree)
|
---|
| 4812 | {
|
---|
| 4813 | PSUPDRVNTPROTECT pRemovedChild = (PSUPDRVNTPROTECT)RTAvlPVRemove(&g_NtProtectTree, pChild->AvlCore.Key);
|
---|
[62677] | 4814 | Assert(pRemovedChild == pChild); RT_NOREF_PV(pRemovedChild);
|
---|
[57303] | 4815 | pChild->fInTree = false;
|
---|
| 4816 | }
|
---|
| 4817 | }
|
---|
[51770] | 4818 | else
|
---|
| 4819 | pChild = NULL;
|
---|
| 4820 | }
|
---|
| 4821 | }
|
---|
| 4822 | else
|
---|
| 4823 | AssertRelease(pNtProtect->enmProcessKind != kSupDrvNtProtectKind_VmProcessUnconfirmed);
|
---|
| 4824 |
|
---|
| 4825 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4826 |
|
---|
| 4827 | if (pNtProtect->pCsrssProcess)
|
---|
| 4828 | {
|
---|
| 4829 | ObDereferenceObject(pNtProtect->pCsrssProcess);
|
---|
| 4830 | pNtProtect->pCsrssProcess = NULL;
|
---|
| 4831 | }
|
---|
| 4832 |
|
---|
| 4833 | RTMemFree(pNtProtect);
|
---|
| 4834 | if (pChild)
|
---|
| 4835 | RTMemFree(pChild);
|
---|
| 4836 | }
|
---|
| 4837 | }
|
---|
| 4838 |
|
---|
| 4839 |
|
---|
| 4840 | /**
|
---|
| 4841 | * Looks up a PID in the NT protect tree.
|
---|
| 4842 | *
|
---|
| 4843 | * @returns Pointer to a NT protection structure (with a referenced) on success,
|
---|
| 4844 | * NULL if not found.
|
---|
| 4845 | * @param hPid The process ID.
|
---|
| 4846 | */
|
---|
| 4847 | static PSUPDRVNTPROTECT supdrvNtProtectLookup(HANDLE hPid)
|
---|
| 4848 | {
|
---|
| 4849 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4850 | PSUPDRVNTPROTECT pFound = (PSUPDRVNTPROTECT)RTAvlPVGet(&g_NtProtectTree, hPid);
|
---|
| 4851 | if (pFound)
|
---|
| 4852 | ASMAtomicIncU32(&pFound->cRefs);
|
---|
| 4853 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4854 | return pFound;
|
---|
| 4855 | }
|
---|
| 4856 |
|
---|
| 4857 |
|
---|
| 4858 | /**
|
---|
[52962] | 4859 | * Validates a few facts about the stub process when the VM process opens
|
---|
| 4860 | * vboxdrv.
|
---|
| 4861 | *
|
---|
| 4862 | * This makes sure the stub process is still around and that it has neither
|
---|
| 4863 | * debugger nor extra threads in it.
|
---|
| 4864 | *
|
---|
| 4865 | * @returns VBox status code.
|
---|
| 4866 | * @param pNtProtect The unconfirmed VM process currently trying to
|
---|
| 4867 | * open vboxdrv.
|
---|
| 4868 | * @param pErrInfo Additional error information.
|
---|
| 4869 | */
|
---|
| 4870 | static int supdrvNtProtectVerifyStubForVmProcess(PSUPDRVNTPROTECT pNtProtect, PRTERRINFO pErrInfo)
|
---|
| 4871 | {
|
---|
| 4872 | /*
|
---|
| 4873 | * Grab a reference to the parent stub process.
|
---|
| 4874 | */
|
---|
| 4875 | SUPDRVNTPROTECTKIND enmStub = kSupDrvNtProtectKind_Invalid;
|
---|
| 4876 | PSUPDRVNTPROTECT pNtStub = NULL;
|
---|
| 4877 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4878 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4879 | {
|
---|
| 4880 | pNtStub = pNtProtect->u.pParent; /* weak reference. */
|
---|
| 4881 | if (pNtStub)
|
---|
| 4882 | {
|
---|
| 4883 | enmStub = pNtStub->enmProcessKind;
|
---|
| 4884 | if (enmStub == kSupDrvNtProtectKind_StubParent)
|
---|
| 4885 | {
|
---|
| 4886 | uint32_t cRefs = ASMAtomicIncU32(&pNtStub->cRefs);
|
---|
[62677] | 4887 | Assert(cRefs > 0 && cRefs < 1024); RT_NOREF_PV(cRefs);
|
---|
[52962] | 4888 | }
|
---|
| 4889 | else
|
---|
| 4890 | pNtStub = NULL;
|
---|
| 4891 | }
|
---|
| 4892 | }
|
---|
| 4893 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4894 |
|
---|
| 4895 | /*
|
---|
| 4896 | * We require the stub process to be present.
|
---|
| 4897 | */
|
---|
| 4898 | if (!pNtStub)
|
---|
| 4899 | return RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_NOT_FOUND, "Missing stub process (enmStub=%d).", enmStub);
|
---|
| 4900 |
|
---|
| 4901 | /*
|
---|
| 4902 | * Open the parent process and thread so we can check for debuggers and unwanted threads.
|
---|
| 4903 | */
|
---|
| 4904 | int rc;
|
---|
| 4905 | PEPROCESS pStubProcess;
|
---|
| 4906 | NTSTATUS rcNt = PsLookupProcessByProcessId(pNtStub->AvlCore.Key, &pStubProcess);
|
---|
| 4907 | if (NT_SUCCESS(rcNt))
|
---|
| 4908 | {
|
---|
| 4909 | HANDLE hStubProcess;
|
---|
| 4910 | rcNt = ObOpenObjectByPointer(pStubProcess, OBJ_KERNEL_HANDLE, NULL /*PassedAccessState*/,
|
---|
| 4911 | 0 /*DesiredAccess*/, *PsProcessType, KernelMode, &hStubProcess);
|
---|
| 4912 | if (NT_SUCCESS(rcNt))
|
---|
| 4913 | {
|
---|
| 4914 | PETHREAD pStubThread;
|
---|
| 4915 | rcNt = PsLookupThreadByThreadId(pNtStub->hOpenTid, &pStubThread);
|
---|
| 4916 | if (NT_SUCCESS(rcNt))
|
---|
| 4917 | {
|
---|
| 4918 | HANDLE hStubThread;
|
---|
| 4919 | rcNt = ObOpenObjectByPointer(pStubThread, OBJ_KERNEL_HANDLE, NULL /*PassedAccessState*/,
|
---|
| 4920 | 0 /*DesiredAccess*/, *PsThreadType, KernelMode, &hStubThread);
|
---|
| 4921 | if (NT_SUCCESS(rcNt))
|
---|
| 4922 | {
|
---|
| 4923 | /*
|
---|
| 4924 | * Do some simple sanity checking.
|
---|
| 4925 | */
|
---|
| 4926 | rc = supHardNtVpDebugger(hStubProcess, pErrInfo);
|
---|
| 4927 | if (RT_SUCCESS(rc))
|
---|
| 4928 | rc = supHardNtVpThread(hStubProcess, hStubThread, pErrInfo);
|
---|
| 4929 |
|
---|
| 4930 | /* Clean up. */
|
---|
| 4931 | rcNt = NtClose(hStubThread); AssertMsg(NT_SUCCESS(rcNt), ("%#x\n", rcNt));
|
---|
| 4932 | }
|
---|
| 4933 | else
|
---|
| 4934 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_THREAD_OPEN_ERROR,
|
---|
| 4935 | "Error opening stub thread %p (tid %p, pid %p): %#x",
|
---|
| 4936 | pStubThread, pNtStub->hOpenTid, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4937 | }
|
---|
| 4938 | else
|
---|
| 4939 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_THREAD_NOT_FOUND,
|
---|
| 4940 | "Failed to locate thread %p in %p: %#x", pNtStub->hOpenTid, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4941 | rcNt = NtClose(hStubProcess); AssertMsg(NT_SUCCESS(rcNt), ("%#x\n", rcNt));
|
---|
| 4942 | }
|
---|
| 4943 | else
|
---|
| 4944 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_OPEN_ERROR,
|
---|
| 4945 | "Error opening stub process %p (pid %p): %#x", pStubProcess, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4946 | ObDereferenceObject(pStubProcess);
|
---|
| 4947 | }
|
---|
| 4948 | else
|
---|
| 4949 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_NOT_FOUND,
|
---|
| 4950 | "Failed to locate stub process %p: %#x", pNtStub->AvlCore.Key, rcNt);
|
---|
| 4951 |
|
---|
| 4952 | supdrvNtProtectRelease(pNtStub);
|
---|
| 4953 | return rc;
|
---|
| 4954 | }
|
---|
| 4955 |
|
---|
| 4956 |
|
---|
[97023] | 4957 | static const char *supdrvNtProtectHandleTypeIndexToName(ULONG idxType, char *pszName, size_t cbName)
|
---|
| 4958 | {
|
---|
| 4959 | /*
|
---|
| 4960 | * Query the object types.
|
---|
| 4961 | */
|
---|
| 4962 | uint32_t cbBuf = _8K;
|
---|
| 4963 | uint8_t *pbBuf = (uint8_t *)RTMemAllocZ(_8K);
|
---|
| 4964 | ULONG cbNeeded = cbBuf;
|
---|
| 4965 | NTSTATUS rcNt = NtQueryObject(NULL, ObjectTypesInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 4966 | while (rcNt == STATUS_INFO_LENGTH_MISMATCH)
|
---|
| 4967 | {
|
---|
| 4968 | cbBuf = RT_ALIGN_32(cbNeeded + 256, _64K);
|
---|
| 4969 | RTMemFree(pbBuf);
|
---|
| 4970 | pbBuf = (uint8_t *)RTMemAllocZ(cbBuf);
|
---|
| 4971 | if (pbBuf)
|
---|
| 4972 | rcNt = NtQueryObject(NULL, ObjectTypesInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 4973 | else
|
---|
| 4974 | break;
|
---|
| 4975 | }
|
---|
| 4976 | if (NT_SUCCESS(rcNt))
|
---|
| 4977 | {
|
---|
| 4978 | Assert(cbNeeded <= cbBuf);
|
---|
| 4979 |
|
---|
| 4980 | POBJECT_TYPES_INFORMATION pObjTypes = (OBJECT_TYPES_INFORMATION *)pbBuf;
|
---|
| 4981 | POBJECT_TYPE_INFORMATION pCurType = &pObjTypes->FirstType;
|
---|
| 4982 | ULONG cLeft = pObjTypes->NumberOfTypes;
|
---|
| 4983 | while (cLeft-- > 0 && (uintptr_t)&pCurType[1] - (uintptr_t)pbBuf < cbNeeded)
|
---|
| 4984 | {
|
---|
| 4985 | if (pCurType->TypeIndex == idxType)
|
---|
| 4986 | {
|
---|
| 4987 | PCRTUTF16 const pwszSrc = pCurType->TypeName.Buffer;
|
---|
| 4988 | AssertBreak(pwszSrc);
|
---|
| 4989 | size_t idxName = pCurType->TypeName.Length / sizeof(RTUTF16);
|
---|
| 4990 | AssertBreak(idxName > 0);
|
---|
| 4991 | AssertBreak(idxName < 128);
|
---|
| 4992 | if (idxName >= cbName)
|
---|
| 4993 | idxName = cbName - 1;
|
---|
| 4994 | pszName[idxName] = '\0';
|
---|
| 4995 | while (idxName-- > 0)
|
---|
| 4996 | pszName[idxName] = (char )pwszSrc[idxName];
|
---|
| 4997 | RTMemFree(pbBuf);
|
---|
| 4998 | return pszName;
|
---|
| 4999 | }
|
---|
| 5000 |
|
---|
| 5001 | /* next */
|
---|
| 5002 | pCurType = (POBJECT_TYPE_INFORMATION)( (uintptr_t)pCurType->TypeName.Buffer
|
---|
| 5003 | + RT_ALIGN_32(pCurType->TypeName.MaximumLength, sizeof(uintptr_t)));
|
---|
| 5004 | }
|
---|
| 5005 | }
|
---|
| 5006 |
|
---|
| 5007 | RTMemFree(pbBuf);
|
---|
| 5008 | return "unknown";
|
---|
| 5009 | }
|
---|
| 5010 |
|
---|
| 5011 |
|
---|
[52962] | 5012 | /**
|
---|
[51770] | 5013 | * Worker for supdrvNtProtectVerifyProcess that verifies the handles to a VM
|
---|
| 5014 | * process and its thread.
|
---|
| 5015 | *
|
---|
| 5016 | * @returns VBox status code.
|
---|
| 5017 | * @param pNtProtect The NT protect structure for getting information
|
---|
| 5018 | * about special processes.
|
---|
[53002] | 5019 | * @param pErrInfo Where to return additional error details.
|
---|
[51770] | 5020 | */
|
---|
[53002] | 5021 | static int supdrvNtProtectRestrictHandlesToProcessAndThread(PSUPDRVNTPROTECT pNtProtect, PRTERRINFO pErrInfo)
|
---|
[51770] | 5022 | {
|
---|
| 5023 | /*
|
---|
| 5024 | * What to protect.
|
---|
| 5025 | */
|
---|
| 5026 | PEPROCESS pProtectedProcess = PsGetCurrentProcess();
|
---|
| 5027 | HANDLE hProtectedPid = PsGetProcessId(pProtectedProcess);
|
---|
| 5028 | PETHREAD pProtectedThread = PsGetCurrentThread();
|
---|
| 5029 | AssertReturn(pNtProtect->AvlCore.Key == hProtectedPid, VERR_INTERNAL_ERROR_5);
|
---|
| 5030 |
|
---|
| 5031 | /*
|
---|
| 5032 | * Take a snapshot of all the handles in the system.
|
---|
[51918] | 5033 | * Note! The 32 bytes on the size of to counteract the allocation header
|
---|
| 5034 | * that rtR0MemAllocEx slaps on everything.
|
---|
[51770] | 5035 | */
|
---|
[51918] | 5036 | uint32_t cbBuf = _256K - 32;
|
---|
[51770] | 5037 | uint8_t *pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 5038 | ULONG cbNeeded = cbBuf;
|
---|
| 5039 | NTSTATUS rcNt = NtQuerySystemInformation(SystemExtendedHandleInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 5040 | if (!NT_SUCCESS(rcNt))
|
---|
| 5041 | {
|
---|
| 5042 | while ( rcNt == STATUS_INFO_LENGTH_MISMATCH
|
---|
| 5043 | && cbNeeded > cbBuf
|
---|
| 5044 | && cbBuf <= 32U*_1M)
|
---|
| 5045 | {
|
---|
[51918] | 5046 | cbBuf = RT_ALIGN_32(cbNeeded + _4K, _64K) - 32;
|
---|
[51770] | 5047 | RTMemFree(pbBuf);
|
---|
| 5048 | pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 5049 | if (!pbBuf)
|
---|
[53002] | 5050 | return RTErrInfoSetF(pErrInfo, VERR_NO_MEMORY, "Error allocating %zu bytes for querying handles.", cbBuf);
|
---|
[51770] | 5051 | rcNt = NtQuerySystemInformation(SystemExtendedHandleInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 5052 | }
|
---|
| 5053 | if (!NT_SUCCESS(rcNt))
|
---|
| 5054 | {
|
---|
| 5055 | RTMemFree(pbBuf);
|
---|
[53002] | 5056 | return RTErrInfoSetF(pErrInfo, RTErrConvertFromNtStatus(rcNt),
|
---|
| 5057 | "NtQuerySystemInformation/SystemExtendedHandleInformation failed: %#x\n", rcNt);
|
---|
[51770] | 5058 | }
|
---|
| 5059 | }
|
---|
| 5060 |
|
---|
| 5061 | /*
|
---|
| 5062 | * Walk the information and look for handles to the two objects we're protecting.
|
---|
| 5063 | */
|
---|
| 5064 | int rc = VINF_SUCCESS;
|
---|
[52387] | 5065 | # ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 5066 | HANDLE idLastDebugger = (HANDLE)~(uintptr_t)0;
|
---|
| 5067 | # endif
|
---|
[51770] | 5068 |
|
---|
| 5069 | uint32_t cCsrssProcessHandles = 0;
|
---|
| 5070 | uint32_t cSystemProcessHandles = 0;
|
---|
| 5071 | uint32_t cEvilProcessHandles = 0;
|
---|
| 5072 | uint32_t cBenignProcessHandles = 0;
|
---|
| 5073 |
|
---|
| 5074 | uint32_t cCsrssThreadHandles = 0;
|
---|
| 5075 | uint32_t cEvilThreadHandles = 0;
|
---|
| 5076 | uint32_t cBenignThreadHandles = 0;
|
---|
| 5077 |
|
---|
[97023] | 5078 | uint32_t cEvilInheritableHandles = 0;
|
---|
| 5079 | uint32_t cBenignInheritableHandles = 0;
|
---|
| 5080 | char szTmpName[32];
|
---|
| 5081 |
|
---|
[51770] | 5082 | SYSTEM_HANDLE_INFORMATION_EX const *pInfo = (SYSTEM_HANDLE_INFORMATION_EX const *)pbBuf;
|
---|
| 5083 | ULONG_PTR i = pInfo->NumberOfHandles;
|
---|
[73097] | 5084 | AssertRelease(RT_UOFFSETOF_DYN(SYSTEM_HANDLE_INFORMATION_EX, Handles[i]) == cbNeeded);
|
---|
[51770] | 5085 | while (i-- > 0)
|
---|
| 5086 | {
|
---|
| 5087 | const char *pszType;
|
---|
| 5088 | SYSTEM_HANDLE_ENTRY_INFO_EX const *pHandleInfo = &pInfo->Handles[i];
|
---|
| 5089 | if (pHandleInfo->Object == pProtectedProcess)
|
---|
| 5090 | {
|
---|
[52949] | 5091 | /* Handles within the protected process are fine. */
|
---|
[51770] | 5092 | if ( !(pHandleInfo->GrantedAccess & SUPDRV_NT_EVIL_PROCESS_RIGHTS)
|
---|
| 5093 | || pHandleInfo->UniqueProcessId == hProtectedPid)
|
---|
| 5094 | {
|
---|
| 5095 | cBenignProcessHandles++;
|
---|
| 5096 | continue;
|
---|
| 5097 | }
|
---|
| 5098 |
|
---|
| 5099 | /* CSRSS is allowed to have one evil process handle.
|
---|
| 5100 | See the special cases in the hook code. */
|
---|
| 5101 | if ( cCsrssProcessHandles < 1
|
---|
| 5102 | && pHandleInfo->UniqueProcessId == pNtProtect->hCsrssPid)
|
---|
| 5103 | {
|
---|
| 5104 | cCsrssProcessHandles++;
|
---|
| 5105 | continue;
|
---|
| 5106 | }
|
---|
| 5107 |
|
---|
[53016] | 5108 | /* The system process is allowed having two open process handle in
|
---|
| 5109 | Windows 8.1 and later, and one in earlier. This is probably a
|
---|
| 5110 | little overly paranoid as I think we can safely trust the
|
---|
| 5111 | system process... */
|
---|
[57303] | 5112 | if ( cSystemProcessHandles < (g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 3) ? UINT32_C(2) : UINT32_C(1))
|
---|
[51770] | 5113 | && pHandleInfo->UniqueProcessId == PsGetProcessId(PsInitialSystemProcess))
|
---|
| 5114 | {
|
---|
| 5115 | cSystemProcessHandles++;
|
---|
| 5116 | continue;
|
---|
| 5117 | }
|
---|
| 5118 |
|
---|
| 5119 | cEvilProcessHandles++;
|
---|
| 5120 | pszType = "process";
|
---|
| 5121 | }
|
---|
| 5122 | else if (pHandleInfo->Object == pProtectedThread)
|
---|
| 5123 | {
|
---|
| 5124 | /* Handles within the protected process is fine. */
|
---|
| 5125 | if ( !(pHandleInfo->GrantedAccess & SUPDRV_NT_EVIL_THREAD_RIGHTS)
|
---|
| 5126 | || pHandleInfo->UniqueProcessId == hProtectedPid)
|
---|
| 5127 | {
|
---|
| 5128 | cBenignThreadHandles++;
|
---|
| 5129 | continue;
|
---|
| 5130 | }
|
---|
| 5131 |
|
---|
| 5132 | /* CSRSS is allowed to have one evil handle to the primary thread
|
---|
| 5133 | for LPC purposes. See the hook for special case. */
|
---|
| 5134 | if ( cCsrssThreadHandles < 1
|
---|
| 5135 | && pHandleInfo->UniqueProcessId == pNtProtect->hCsrssPid)
|
---|
| 5136 | {
|
---|
| 5137 | cCsrssThreadHandles++;
|
---|
| 5138 | continue;
|
---|
| 5139 | }
|
---|
| 5140 |
|
---|
| 5141 | cEvilThreadHandles++;
|
---|
| 5142 | pszType = "thread";
|
---|
| 5143 | }
|
---|
[97023] | 5144 | else if ( (pHandleInfo->HandleAttributes & OBJ_INHERIT)
|
---|
| 5145 | && pHandleInfo->UniqueProcessId == hProtectedPid)
|
---|
| 5146 | {
|
---|
| 5147 | /* No handles should be marked inheritable, except files and two events.
|
---|
| 5148 | Handles to NT 'directory' objects are especially evil, because of
|
---|
| 5149 | KnownDlls faking. See bugref{10294} for details.
|
---|
| 5150 |
|
---|
| 5151 | Correlating the ObjectTypeIndex to a type is complicated, so instead
|
---|
| 5152 | we try referecing the handle and check the type that way. So, only
|
---|
| 5153 | file and events objects are allowed to be marked inheritable at the
|
---|
| 5154 | moment. Add more in whitelist fashion if needed. */
|
---|
| 5155 | void *pvObject = NULL;
|
---|
| 5156 | rcNt = ObReferenceObjectByHandle(pHandleInfo->HandleValue, 0, *IoFileObjectType, KernelMode, &pvObject, NULL);
|
---|
| 5157 | if (rcNt == STATUS_OBJECT_TYPE_MISMATCH)
|
---|
| 5158 | rcNt = ObReferenceObjectByHandle(pHandleInfo->HandleValue, 0, *ExEventObjectType, KernelMode, &pvObject, NULL);
|
---|
| 5159 | if (NT_SUCCESS(rcNt))
|
---|
| 5160 | {
|
---|
| 5161 | ObDereferenceObject(pvObject);
|
---|
| 5162 | cBenignInheritableHandles++;
|
---|
| 5163 | continue;
|
---|
| 5164 | }
|
---|
| 5165 |
|
---|
| 5166 | if (rcNt != STATUS_OBJECT_TYPE_MISMATCH)
|
---|
| 5167 | {
|
---|
| 5168 | cBenignInheritableHandles++;
|
---|
| 5169 | continue;
|
---|
| 5170 | }
|
---|
| 5171 |
|
---|
| 5172 | cEvilInheritableHandles++;
|
---|
| 5173 | pszType = supdrvNtProtectHandleTypeIndexToName(pHandleInfo->ObjectTypeIndex, szTmpName, sizeof(szTmpName));
|
---|
| 5174 | }
|
---|
[51770] | 5175 | else
|
---|
| 5176 | continue;
|
---|
| 5177 |
|
---|
[52387] | 5178 | # ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 5179 | /* Ignore whitelisted debuggers. */
|
---|
| 5180 | if (pHandleInfo->UniqueProcessId == idLastDebugger)
|
---|
| 5181 | continue;
|
---|
| 5182 | PEPROCESS pDbgProc;
|
---|
[84394] | 5183 | rcNt = PsLookupProcessByProcessId(pHandleInfo->UniqueProcessId, &pDbgProc);
|
---|
[52387] | 5184 | if (NT_SUCCESS(rcNt))
|
---|
| 5185 | {
|
---|
| 5186 | bool fIsDebugger = supdrvNtProtectIsWhitelistedDebugger(pDbgProc);
|
---|
| 5187 | ObDereferenceObject(pDbgProc);
|
---|
| 5188 | if (fIsDebugger)
|
---|
| 5189 | {
|
---|
| 5190 | idLastDebugger = pHandleInfo->UniqueProcessId;
|
---|
| 5191 | continue;
|
---|
| 5192 | }
|
---|
| 5193 | }
|
---|
| 5194 | # endif
|
---|
| 5195 |
|
---|
[51770] | 5196 | /* Found evil handle. Currently ignoring on pre-Vista. */
|
---|
| 5197 | # ifndef VBOX_WITH_VISTA_NO_SP
|
---|
| 5198 | if ( g_uNtVerCombined >= SUP_NT_VER_VISTA
|
---|
| 5199 | # else
|
---|
| 5200 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 6001, 0, 0)
|
---|
| 5201 | # endif
|
---|
| 5202 | || g_pfnObRegisterCallbacks)
|
---|
| 5203 | {
|
---|
[97023] | 5204 | LogRel(("vboxdrv: Found evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s (%u)\n",
|
---|
[51770] | 5205 | pHandleInfo->UniqueProcessId, pHandleInfo->HandleValue,
|
---|
[97023] | 5206 | pHandleInfo->GrantedAccess, pHandleInfo->HandleAttributes, pszType, pHandleInfo->ObjectTypeIndex));
|
---|
[53002] | 5207 | rc = RTErrInfoAddF(pErrInfo, VERR_SUPDRV_HARDENING_EVIL_HANDLE,
|
---|
| 5208 | *pErrInfo->pszMsg
|
---|
[97023] | 5209 | ? "\nFound evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s (%u)"
|
---|
| 5210 | : "Found evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s (%u)",
|
---|
[53002] | 5211 | pHandleInfo->UniqueProcessId, pHandleInfo->HandleValue,
|
---|
[97023] | 5212 | pHandleInfo->GrantedAccess, pHandleInfo->HandleAttributes, pszType, pHandleInfo->ObjectTypeIndex);
|
---|
[53002] | 5213 |
|
---|
| 5214 | /* Try add the process name. */
|
---|
| 5215 | PEPROCESS pOffendingProcess;
|
---|
| 5216 | rcNt = PsLookupProcessByProcessId(pHandleInfo->UniqueProcessId, &pOffendingProcess);
|
---|
| 5217 | if (NT_SUCCESS(rcNt))
|
---|
| 5218 | {
|
---|
| 5219 | const char *pszName = (const char *)PsGetProcessImageFileName(pOffendingProcess);
|
---|
| 5220 | if (pszName && *pszName)
|
---|
| 5221 | rc = RTErrInfoAddF(pErrInfo, rc, " [%s]", pszName);
|
---|
| 5222 |
|
---|
| 5223 | ObDereferenceObject(pOffendingProcess);
|
---|
| 5224 | }
|
---|
[51770] | 5225 | }
|
---|
| 5226 | }
|
---|
| 5227 |
|
---|
[51918] | 5228 | RTMemFree(pbBuf);
|
---|
[51770] | 5229 | return rc;
|
---|
| 5230 | }
|
---|
| 5231 |
|
---|
| 5232 |
|
---|
| 5233 | /**
|
---|
| 5234 | * Checks if the current process checks out as a VM process stub.
|
---|
| 5235 | *
|
---|
| 5236 | * @returns VBox status code.
|
---|
| 5237 | * @param pNtProtect The NT protect structure. This is upgraded to a
|
---|
| 5238 | * final protection kind (state) on success.
|
---|
| 5239 | */
|
---|
| 5240 | static int supdrvNtProtectVerifyProcess(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 5241 | {
|
---|
| 5242 | AssertReturn(PsGetProcessId(PsGetCurrentProcess()) == pNtProtect->AvlCore.Key, VERR_INTERNAL_ERROR_3);
|
---|
| 5243 |
|
---|
| 5244 | /*
|
---|
| 5245 | * Do the verification. The handle restriction checks are only preformed
|
---|
| 5246 | * on VM processes.
|
---|
| 5247 | */
|
---|
| 5248 | int rc = VINF_SUCCESS;
|
---|
[53002] | 5249 | PSUPDRVNTERRORINFO pErrorInfo = (PSUPDRVNTERRORINFO)RTMemAllocZ(sizeof(*pErrorInfo));
|
---|
[51770] | 5250 | if (RT_SUCCESS(rc))
|
---|
| 5251 | {
|
---|
[53002] | 5252 | pErrorInfo->hProcessId = PsGetCurrentProcessId();
|
---|
| 5253 | pErrorInfo->hThreadId = PsGetCurrentThreadId();
|
---|
[51770] | 5254 | RTERRINFO ErrInfo;
|
---|
[53002] | 5255 | RTErrInfoInit(&ErrInfo, pErrorInfo->szErrorInfo, sizeof(pErrorInfo->szErrorInfo));
|
---|
[51770] | 5256 |
|
---|
[53002] | 5257 | if (pNtProtect->enmProcessKind >= kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 5258 | rc = supdrvNtProtectRestrictHandlesToProcessAndThread(pNtProtect, &ErrInfo);
|
---|
| 5259 | if (RT_SUCCESS(rc))
|
---|
| 5260 | {
|
---|
[53017] | 5261 | rc = supHardenedWinVerifyProcess(NtCurrentProcess(), NtCurrentThread(), SUPHARDNTVPKIND_VERIFY_ONLY, 0 /*fFlags*/,
|
---|
[53002] | 5262 | NULL /*pcFixes*/, &ErrInfo);
|
---|
| 5263 | if (RT_SUCCESS(rc) && pNtProtect->enmProcessKind >= kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 5264 | rc = supdrvNtProtectVerifyStubForVmProcess(pNtProtect, &ErrInfo);
|
---|
| 5265 | }
|
---|
[51770] | 5266 | }
|
---|
[53002] | 5267 | else
|
---|
| 5268 | rc = VERR_NO_MEMORY;
|
---|
[51770] | 5269 |
|
---|
| 5270 | /*
|
---|
| 5271 | * Upgrade and return.
|
---|
| 5272 | */
|
---|
[52962] | 5273 | HANDLE hOpenTid = PsGetCurrentThreadId();
|
---|
[51770] | 5274 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 5275 |
|
---|
| 5276 | /* Stub process verficiation is pretty much straight forward. */
|
---|
| 5277 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubUnverified)
|
---|
[52962] | 5278 | {
|
---|
[51770] | 5279 | pNtProtect->enmProcessKind = RT_SUCCESS(rc) ? kSupDrvNtProtectKind_StubSpawning : kSupDrvNtProtectKind_StubDead;
|
---|
[52962] | 5280 | pNtProtect->hOpenTid = hOpenTid;
|
---|
| 5281 | }
|
---|
[51770] | 5282 | /* The VM process verification is a little bit more complicated
|
---|
| 5283 | because we need to drop the parent process reference as well. */
|
---|
| 5284 | else if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 5285 | {
|
---|
| 5286 | AssertRelease(pNtProtect->cRefs >= 2); /* Parent + Caller */
|
---|
| 5287 | PSUPDRVNTPROTECT pParent = pNtProtect->u.pParent;
|
---|
| 5288 | AssertRelease(pParent);
|
---|
| 5289 | AssertRelease(pParent->u.pParent == pNtProtect);
|
---|
| 5290 | AssertRelease(pParent->enmProcessKind == kSupDrvNtProtectKind_StubParent);
|
---|
| 5291 | pParent->u.pParent = NULL;
|
---|
| 5292 |
|
---|
| 5293 | pNtProtect->u.pParent = NULL;
|
---|
| 5294 | ASMAtomicDecU32(&pNtProtect->cRefs);
|
---|
| 5295 |
|
---|
| 5296 | if (RT_SUCCESS(rc))
|
---|
[52962] | 5297 | {
|
---|
[51770] | 5298 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessConfirmed;
|
---|
[52962] | 5299 | pNtProtect->hOpenTid = hOpenTid;
|
---|
| 5300 | }
|
---|
[51770] | 5301 | else
|
---|
| 5302 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 5303 | }
|
---|
| 5304 |
|
---|
| 5305 | /* Since the stub and VM processes are only supposed to have one thread,
|
---|
| 5306 | we're not supposed to be subject to any races from within the processes.
|
---|
| 5307 |
|
---|
| 5308 | There is a race between VM process verification and the stub process
|
---|
| 5309 | exiting, though. We require the stub process to be alive until the new
|
---|
| 5310 | VM process has made it thru the validation. So, when the stub
|
---|
| 5311 | terminates the notification handler will change the state of both stub
|
---|
| 5312 | and VM process to dead.
|
---|
| 5313 |
|
---|
| 5314 | Also, I'm not entirely certain where the process
|
---|
| 5315 | termination notification is triggered from, so that can theorically
|
---|
| 5316 | create a race in both cases. */
|
---|
| 5317 | else
|
---|
| 5318 | {
|
---|
| 5319 | AssertReleaseMsg( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubDead
|
---|
| 5320 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessDead,
|
---|
| 5321 | ("enmProcessKind=%d rc=%Rrc\n", pNtProtect->enmProcessKind, rc));
|
---|
| 5322 | if (RT_SUCCESS(rc))
|
---|
| 5323 | rc = VERR_INVALID_STATE; /* There should be no races here. */
|
---|
| 5324 | }
|
---|
| 5325 |
|
---|
| 5326 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
[53002] | 5327 |
|
---|
| 5328 | /*
|
---|
| 5329 | * Free error info on success, keep it on failure.
|
---|
| 5330 | */
|
---|
| 5331 | if (RT_SUCCESS(rc))
|
---|
| 5332 | RTMemFree(pErrorInfo);
|
---|
| 5333 | else if (pErrorInfo)
|
---|
| 5334 | {
|
---|
| 5335 | pErrorInfo->cchErrorInfo = (uint32_t)strlen(pErrorInfo->szErrorInfo);
|
---|
| 5336 | if (!pErrorInfo->cchErrorInfo)
|
---|
| 5337 | pErrorInfo->cchErrorInfo = (uint32_t)RTStrPrintf(pErrorInfo->szErrorInfo, sizeof(pErrorInfo->szErrorInfo),
|
---|
| 5338 | "supdrvNtProtectVerifyProcess: rc=%d", rc);
|
---|
[57201] | 5339 | RTLogWriteDebugger(pErrorInfo->szErrorInfo, pErrorInfo->cchErrorInfo);
|
---|
[53002] | 5340 |
|
---|
| 5341 | int rc2 = RTSemMutexRequest(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 5342 | if (RT_SUCCESS(rc2))
|
---|
| 5343 | {
|
---|
| 5344 | pErrorInfo->uCreatedMsTs = RTTimeMilliTS();
|
---|
| 5345 |
|
---|
| 5346 | /* Free old entries. */
|
---|
| 5347 | PSUPDRVNTERRORINFO pCur;
|
---|
| 5348 | while ( (pCur = RTListGetFirst(&g_ErrorInfoHead, SUPDRVNTERRORINFO, ListEntry)) != NULL
|
---|
| 5349 | && (int64_t)(pErrorInfo->uCreatedMsTs - pCur->uCreatedMsTs) > 60000 /*60sec*/)
|
---|
| 5350 | {
|
---|
| 5351 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 5352 | RTMemFree(pCur);
|
---|
| 5353 | }
|
---|
| 5354 |
|
---|
| 5355 | /* Insert our new entry. */
|
---|
| 5356 | RTListAppend(&g_ErrorInfoHead, &pErrorInfo->ListEntry);
|
---|
| 5357 |
|
---|
| 5358 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 5359 | }
|
---|
| 5360 | else
|
---|
| 5361 | RTMemFree(pErrorInfo);
|
---|
| 5362 | }
|
---|
| 5363 |
|
---|
[51770] | 5364 | return rc;
|
---|
| 5365 | }
|
---|
| 5366 |
|
---|
| 5367 |
|
---|
| 5368 | # ifndef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 5369 |
|
---|
| 5370 | /**
|
---|
| 5371 | * Checks if the current process is being debugged.
|
---|
| 5372 | * @return @c true if debugged, @c false if not.
|
---|
| 5373 | */
|
---|
| 5374 | static bool supdrvNtIsDebuggerAttached(void)
|
---|
| 5375 | {
|
---|
| 5376 | return PsIsProcessBeingDebugged(PsGetCurrentProcess()) != FALSE;
|
---|
| 5377 | }
|
---|
| 5378 |
|
---|
| 5379 | # endif /* !VBOX_WITHOUT_DEBUGGER_CHECKS */
|
---|
| 5380 |
|
---|
| 5381 |
|
---|
| 5382 | /**
|
---|
| 5383 | * Terminates the hardening bits.
|
---|
| 5384 | */
|
---|
| 5385 | static void supdrvNtProtectTerm(void)
|
---|
| 5386 | {
|
---|
| 5387 | /*
|
---|
| 5388 | * Stop intercepting process and thread handle creation calls.
|
---|
| 5389 | */
|
---|
| 5390 | if (g_pvObCallbacksCookie)
|
---|
| 5391 | {
|
---|
| 5392 | g_pfnObUnRegisterCallbacks(g_pvObCallbacksCookie);
|
---|
| 5393 | g_pvObCallbacksCookie = NULL;
|
---|
| 5394 | }
|
---|
| 5395 |
|
---|
| 5396 | /*
|
---|
| 5397 | * Stop intercepting process creation and termination notifications.
|
---|
| 5398 | */
|
---|
| 5399 | NTSTATUS rcNt;
|
---|
| 5400 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 5401 | rcNt = g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, TRUE /*fRemove*/);
|
---|
| 5402 | else
|
---|
| 5403 | rcNt = PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, TRUE /*fRemove*/);
|
---|
| 5404 | AssertMsg(NT_SUCCESS(rcNt), ("rcNt=%#x\n", rcNt));
|
---|
| 5405 |
|
---|
| 5406 | Assert(g_NtProtectTree == NULL);
|
---|
| 5407 |
|
---|
| 5408 | /*
|
---|
| 5409 | * Clean up globals.
|
---|
| 5410 | */
|
---|
| 5411 | RTSpinlockDestroy(g_hNtProtectLock);
|
---|
| 5412 | g_NtProtectTree = NIL_RTSPINLOCK;
|
---|
| 5413 |
|
---|
[53002] | 5414 | RTSemMutexDestroy(g_hErrorInfoLock);
|
---|
| 5415 | g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
| 5416 |
|
---|
| 5417 | PSUPDRVNTERRORINFO pCur;
|
---|
| 5418 | while ((pCur = RTListGetFirst(&g_ErrorInfoHead, SUPDRVNTERRORINFO, ListEntry)) != NULL)
|
---|
| 5419 | {
|
---|
| 5420 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 5421 | RTMemFree(pCur);
|
---|
| 5422 | }
|
---|
| 5423 |
|
---|
[51770] | 5424 | supHardenedWinTermImageVerifier();
|
---|
| 5425 | }
|
---|
| 5426 |
|
---|
| 5427 | # ifdef RT_ARCH_X86
|
---|
| 5428 | DECLASM(void) supdrvNtQueryVirtualMemory_0xAF(void);
|
---|
| 5429 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB0(void);
|
---|
| 5430 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB1(void);
|
---|
| 5431 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB2(void);
|
---|
| 5432 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB3(void);
|
---|
| 5433 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB4(void);
|
---|
| 5434 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB5(void);
|
---|
| 5435 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB6(void);
|
---|
| 5436 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB7(void);
|
---|
| 5437 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB8(void);
|
---|
| 5438 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB9(void);
|
---|
| 5439 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBA(void);
|
---|
| 5440 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBB(void);
|
---|
| 5441 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBC(void);
|
---|
| 5442 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBD(void);
|
---|
| 5443 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBE(void);
|
---|
| 5444 | # elif defined(RT_ARCH_AMD64)
|
---|
| 5445 | DECLASM(void) supdrvNtQueryVirtualMemory_0x1F(void);
|
---|
| 5446 | DECLASM(void) supdrvNtQueryVirtualMemory_0x20(void);
|
---|
| 5447 | DECLASM(void) supdrvNtQueryVirtualMemory_0x21(void);
|
---|
| 5448 | DECLASM(void) supdrvNtQueryVirtualMemory_0x22(void);
|
---|
| 5449 | DECLASM(void) supdrvNtQueryVirtualMemory_0x23(void);
|
---|
| 5450 | extern "C" NTSYSAPI NTSTATUS NTAPI ZwRequestWaitReplyPort(HANDLE, PVOID, PVOID);
|
---|
| 5451 | # endif
|
---|
| 5452 |
|
---|
[62677] | 5453 |
|
---|
[51770] | 5454 | /**
|
---|
| 5455 | * Initalizes the hardening bits.
|
---|
| 5456 | *
|
---|
| 5457 | * @returns NT status code.
|
---|
| 5458 | */
|
---|
| 5459 | static NTSTATUS supdrvNtProtectInit(void)
|
---|
| 5460 | {
|
---|
| 5461 | /*
|
---|
| 5462 | * Initialize the globals.
|
---|
| 5463 | */
|
---|
| 5464 |
|
---|
| 5465 | /* The NT version. */
|
---|
| 5466 | ULONG uMajor, uMinor, uBuild;
|
---|
| 5467 | PsGetVersion(&uMajor, &uMinor, &uBuild, NULL);
|
---|
| 5468 | g_uNtVerCombined = SUP_MAKE_NT_VER_COMBINED(uMajor, uMinor, uBuild, 0, 0);
|
---|
| 5469 |
|
---|
| 5470 | /* Resolve methods we want but isn't available everywhere. */
|
---|
| 5471 | UNICODE_STRING RoutineName;
|
---|
| 5472 |
|
---|
[52735] | 5473 | RtlInitUnicodeString(&RoutineName, L"ObGetObjectType");
|
---|
| 5474 | g_pfnObGetObjectType = (PFNOBGETOBJECTTYPE)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5475 |
|
---|
[51770] | 5476 | RtlInitUnicodeString(&RoutineName, L"ObRegisterCallbacks");
|
---|
| 5477 | g_pfnObRegisterCallbacks = (PFNOBREGISTERCALLBACKS)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5478 |
|
---|
| 5479 | RtlInitUnicodeString(&RoutineName, L"ObUnRegisterCallbacks");
|
---|
| 5480 | g_pfnObUnRegisterCallbacks = (PFNOBUNREGISTERCALLBACKS)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5481 |
|
---|
| 5482 | RtlInitUnicodeString(&RoutineName, L"PsSetCreateProcessNotifyRoutineEx");
|
---|
| 5483 | g_pfnPsSetCreateProcessNotifyRoutineEx = (PFNPSSETCREATEPROCESSNOTIFYROUTINEEX)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5484 |
|
---|
| 5485 | RtlInitUnicodeString(&RoutineName, L"PsReferenceProcessFilePointer");
|
---|
| 5486 | g_pfnPsReferenceProcessFilePointer = (PFNPSREFERENCEPROCESSFILEPOINTER)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5487 |
|
---|
| 5488 | RtlInitUnicodeString(&RoutineName, L"PsIsProtectedProcessLight");
|
---|
| 5489 | g_pfnPsIsProtectedProcessLight = (PFNPSISPROTECTEDPROCESSLIGHT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5490 |
|
---|
[52735] | 5491 | RtlInitUnicodeString(&RoutineName, L"ZwAlpcCreatePort");
|
---|
| 5492 | g_pfnZwAlpcCreatePort = (PFNZWALPCCREATEPORT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5493 |
|
---|
[51770] | 5494 | RtlInitUnicodeString(&RoutineName, L"ZwQueryVirtualMemory"); /* Yes, using Zw version here. */
|
---|
| 5495 | g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 5496 | if (!g_pfnNtQueryVirtualMemory && g_uNtVerCombined < SUP_NT_VER_VISTA)
|
---|
| 5497 | {
|
---|
| 5498 | /* XP & W2K3 doesn't have this function exported, so we've cooked up a
|
---|
| 5499 | few alternative in the assembly helper file that uses the code in
|
---|
[51955] | 5500 | ZwReadFile with a different eax value. We figure the syscall number
|
---|
| 5501 | by inspecting ZwQueryVolumeInformationFile as it's the next number. */
|
---|
[51770] | 5502 | # ifdef RT_ARCH_X86
|
---|
| 5503 | uint8_t const *pbCode = (uint8_t const *)(uintptr_t)ZwQueryVolumeInformationFile;
|
---|
| 5504 | if (*pbCode == 0xb8) /* mov eax, dword */
|
---|
| 5505 | switch (*(uint32_t const *)&pbCode[1])
|
---|
| 5506 | {
|
---|
| 5507 | case 0xb0: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xAF; break; /* just in case */
|
---|
| 5508 | case 0xb1: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB0; break; /* just in case */
|
---|
| 5509 | case 0xb2: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB1; break; /* just in case */
|
---|
| 5510 | case 0xb3: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB2; break; /* XP SP3 */
|
---|
| 5511 | case 0xb4: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB2; break; /* just in case */
|
---|
| 5512 | case 0xb5: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB3; break; /* just in case */
|
---|
| 5513 | case 0xb6: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB4; break; /* just in case */
|
---|
| 5514 | case 0xb7: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB5; break; /* just in case */
|
---|
| 5515 | case 0xb8: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB6; break; /* just in case */
|
---|
| 5516 | case 0xb9: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB7; break; /* just in case */
|
---|
| 5517 | case 0xba: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB8; break; /* just in case */
|
---|
| 5518 | case 0xbb: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBA; break; /* W2K3 R2 SP2 */
|
---|
| 5519 | case 0xbc: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBB; break; /* just in case */
|
---|
| 5520 | case 0xbd: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBC; break; /* just in case */
|
---|
| 5521 | case 0xbe: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBD; break; /* just in case */
|
---|
| 5522 | case 0xbf: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBE; break; /* just in case */
|
---|
| 5523 | }
|
---|
| 5524 | # elif defined(RT_ARCH_AMD64)
|
---|
| 5525 | uint8_t const *pbCode = (uint8_t const *)(uintptr_t)ZwRequestWaitReplyPort;
|
---|
| 5526 | if ( pbCode[ 0] == 0x48 /* mov rax, rsp */
|
---|
| 5527 | && pbCode[ 1] == 0x8b
|
---|
| 5528 | && pbCode[ 2] == 0xc4
|
---|
| 5529 | && pbCode[ 3] == 0xfa /* cli */
|
---|
| 5530 | && pbCode[ 4] == 0x48 /* sub rsp, 10h */
|
---|
| 5531 | && pbCode[ 5] == 0x83
|
---|
| 5532 | && pbCode[ 6] == 0xec
|
---|
| 5533 | && pbCode[ 7] == 0x10
|
---|
| 5534 | && pbCode[ 8] == 0x50 /* push rax */
|
---|
| 5535 | && pbCode[ 9] == 0x9c /* pushfq */
|
---|
| 5536 | && pbCode[10] == 0x6a /* push 10 */
|
---|
| 5537 | && pbCode[11] == 0x10
|
---|
| 5538 | && pbCode[12] == 0x48 /* lea rax, [nt!KiServiceLinkage] */
|
---|
| 5539 | && pbCode[13] == 0x8d
|
---|
| 5540 | && pbCode[14] == 0x05
|
---|
| 5541 | && pbCode[19] == 0x50 /* push rax */
|
---|
| 5542 | && pbCode[20] == 0xb8 /* mov eax,1fh <- the syscall no. */
|
---|
| 5543 | /*&& pbCode[21] == 0x1f*/
|
---|
| 5544 | && pbCode[22] == 0x00
|
---|
| 5545 | && pbCode[23] == 0x00
|
---|
| 5546 | && pbCode[24] == 0x00
|
---|
| 5547 | && pbCode[25] == 0xe9 /* jmp KiServiceInternal */
|
---|
| 5548 | )
|
---|
| 5549 | {
|
---|
| 5550 | uint8_t const *pbKiServiceInternal = &pbCode[30] + *(int32_t const *)&pbCode[26];
|
---|
| 5551 | uint8_t const *pbKiServiceLinkage = &pbCode[19] + *(int32_t const *)&pbCode[15];
|
---|
| 5552 | if (*pbKiServiceLinkage == 0xc3)
|
---|
| 5553 | {
|
---|
| 5554 | g_pfnKiServiceInternal = (PFNRT)pbKiServiceInternal;
|
---|
| 5555 | g_pfnKiServiceLinkage = (PFNRT)pbKiServiceLinkage;
|
---|
| 5556 | switch (pbCode[21])
|
---|
| 5557 | {
|
---|
| 5558 | case 0x1e: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x1F; break;
|
---|
| 5559 | case 0x1f: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x20; break;
|
---|
| 5560 | case 0x20: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x21; break;
|
---|
| 5561 | case 0x21: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x22; break;
|
---|
| 5562 | case 0x22: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x23; break;
|
---|
| 5563 | }
|
---|
| 5564 | }
|
---|
| 5565 | }
|
---|
| 5566 | # endif
|
---|
| 5567 | }
|
---|
| 5568 | if (!g_pfnNtQueryVirtualMemory)
|
---|
| 5569 | {
|
---|
| 5570 | LogRel(("vboxdrv: Cannot locate ZwQueryVirtualMemory in ntoskrnl, nor were we able to cook up a replacement.\n"));
|
---|
| 5571 | return STATUS_PROCEDURE_NOT_FOUND;
|
---|
| 5572 | }
|
---|
| 5573 |
|
---|
[52735] | 5574 | # ifdef VBOX_STRICT
|
---|
| 5575 | if ( g_uNtVerCombined >= SUP_NT_VER_W70
|
---|
| 5576 | && ( g_pfnObGetObjectType == NULL
|
---|
| 5577 | || g_pfnZwAlpcCreatePort == NULL) )
|
---|
| 5578 | {
|
---|
| 5579 | LogRel(("vboxdrv: g_pfnObGetObjectType=%p g_pfnZwAlpcCreatePort=%p.\n", g_pfnObGetObjectType, g_pfnZwAlpcCreatePort));
|
---|
| 5580 | return STATUS_PROCEDURE_NOT_FOUND;
|
---|
| 5581 | }
|
---|
| 5582 | # endif
|
---|
[51770] | 5583 |
|
---|
[52738] | 5584 | /* LPC object type. */
|
---|
| 5585 | g_pAlpcPortObjectType1 = *LpcPortObjectType;
|
---|
| 5586 |
|
---|
[51770] | 5587 | /* The spinlock protecting our structures. */
|
---|
| 5588 | int rc = RTSpinlockCreate(&g_hNtProtectLock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "NtProtectLock");
|
---|
| 5589 | if (RT_FAILURE(rc))
|
---|
| 5590 | return VBoxDrvNtErr2NtStatus(rc);
|
---|
| 5591 | g_NtProtectTree = NULL;
|
---|
| 5592 |
|
---|
| 5593 | NTSTATUS rcNt;
|
---|
[53002] | 5594 |
|
---|
| 5595 | /* The mutex protecting the error information. */
|
---|
| 5596 | RTListInit(&g_ErrorInfoHead);
|
---|
| 5597 | rc = RTSemMutexCreate(&g_hErrorInfoLock);
|
---|
[51770] | 5598 | if (RT_SUCCESS(rc))
|
---|
| 5599 | {
|
---|
[53002] | 5600 | /* Image stuff + certificates. */
|
---|
| 5601 | rc = supHardenedWinInitImageVerifier(NULL);
|
---|
| 5602 | if (RT_SUCCESS(rc))
|
---|
[51770] | 5603 | {
|
---|
| 5604 | /*
|
---|
[53002] | 5605 | * Intercept process creation and termination.
|
---|
[51770] | 5606 | */
|
---|
[53002] | 5607 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 5608 | rcNt = g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, FALSE /*fRemove*/);
|
---|
| 5609 | else
|
---|
| 5610 | rcNt = PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, FALSE /*fRemove*/);
|
---|
| 5611 | if (NT_SUCCESS(rcNt))
|
---|
[51770] | 5612 | {
|
---|
[53002] | 5613 | /*
|
---|
| 5614 | * Intercept process and thread handle creation calls.
|
---|
| 5615 | * The preferred method is only available on Vista SP1+.
|
---|
| 5616 | */
|
---|
| 5617 | if (g_pfnObRegisterCallbacks && g_pfnObUnRegisterCallbacks)
|
---|
[51770] | 5618 | {
|
---|
[53002] | 5619 | static OB_OPERATION_REGISTRATION s_aObOperations[] =
|
---|
[51770] | 5620 | {
|
---|
[53002] | 5621 | {
|
---|
[62677] | 5622 | 0, /* PsProcessType - imported, need runtime init, better do it explicitly. */
|
---|
[53002] | 5623 | OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE,
|
---|
| 5624 | supdrvNtProtectCallback_ProcessHandlePre,
|
---|
| 5625 | supdrvNtProtectCallback_ProcessHandlePost,
|
---|
| 5626 | },
|
---|
| 5627 | {
|
---|
[62677] | 5628 | 0, /* PsThreadType - imported, need runtime init, better do it explicitly. */
|
---|
[53002] | 5629 | OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE,
|
---|
| 5630 | supdrvNtProtectCallback_ThreadHandlePre,
|
---|
| 5631 | supdrvNtProtectCallback_ThreadHandlePost,
|
---|
| 5632 | },
|
---|
| 5633 | };
|
---|
[62677] | 5634 | s_aObOperations[0].ObjectType = PsProcessType;
|
---|
| 5635 | s_aObOperations[1].ObjectType = PsThreadType;
|
---|
| 5636 |
|
---|
[53002] | 5637 | static OB_CALLBACK_REGISTRATION s_ObCallbackReg =
|
---|
[51770] | 5638 | {
|
---|
[53002] | 5639 | /* .Version = */ OB_FLT_REGISTRATION_VERSION,
|
---|
| 5640 | /* .OperationRegistrationCount = */ RT_ELEMENTS(s_aObOperations),
|
---|
[93325] | 5641 | /* .Altitude.Length = */ { 0,
|
---|
| 5642 | /* .Altitude.MaximumLength = */ 0,
|
---|
| 5643 | /* .Altitude.Buffer = */ NULL },
|
---|
[53002] | 5644 | /* .RegistrationContext = */ NULL,
|
---|
| 5645 | /* .OperationRegistration = */ &s_aObOperations[0]
|
---|
| 5646 | };
|
---|
| 5647 | static WCHAR const *s_apwszAltitudes[] = /** @todo get a valid number */
|
---|
| 5648 | {
|
---|
| 5649 | L"48596.98940", L"46935.19485", L"49739.39704", L"40334.74976",
|
---|
| 5650 | L"66667.98940", L"69888.19485", L"69889.39704", L"60364.74976",
|
---|
| 5651 | L"85780.98940", L"88978.19485", L"89939.39704", L"80320.74976",
|
---|
| 5652 | L"329879.98940", L"326787.19485", L"328915.39704", L"320314.74976",
|
---|
| 5653 | };
|
---|
[51770] | 5654 |
|
---|
[53002] | 5655 | rcNt = STATUS_FLT_INSTANCE_ALTITUDE_COLLISION;
|
---|
| 5656 | for (uint32_t i = 0; i < RT_ELEMENTS(s_apwszAltitudes) && rcNt == STATUS_FLT_INSTANCE_ALTITUDE_COLLISION; i++)
|
---|
| 5657 | {
|
---|
| 5658 | s_ObCallbackReg.Altitude.Buffer = (WCHAR *)s_apwszAltitudes[i];
|
---|
| 5659 | s_ObCallbackReg.Altitude.Length = (uint16_t)RTUtf16Len(s_apwszAltitudes[i]) * sizeof(WCHAR);
|
---|
| 5660 | s_ObCallbackReg.Altitude.MaximumLength = s_ObCallbackReg.Altitude.Length + sizeof(WCHAR);
|
---|
[51770] | 5661 |
|
---|
[53002] | 5662 | rcNt = g_pfnObRegisterCallbacks(&s_ObCallbackReg, &g_pvObCallbacksCookie);
|
---|
| 5663 | if (NT_SUCCESS(rcNt))
|
---|
| 5664 | {
|
---|
| 5665 | /*
|
---|
| 5666 | * Happy ending.
|
---|
| 5667 | */
|
---|
| 5668 | return STATUS_SUCCESS;
|
---|
| 5669 | }
|
---|
[51770] | 5670 | }
|
---|
[104428] | 5671 | DbgPrint("VBoxSup: ObRegisterCallbacks failed with rcNt=%#x\n", rcNt); /* temp for @bugref{10657} */
|
---|
[53002] | 5672 | LogRel(("vboxdrv: ObRegisterCallbacks failed with rcNt=%#x\n", rcNt));
|
---|
[104428] | 5673 |
|
---|
[53002] | 5674 | g_pvObCallbacksCookie = NULL;
|
---|
[51770] | 5675 | }
|
---|
[53002] | 5676 | else
|
---|
| 5677 | {
|
---|
| 5678 | /*
|
---|
| 5679 | * For the time being, we do not implement extra process
|
---|
| 5680 | * protection on pre-Vista-SP1 systems as they are lacking
|
---|
| 5681 | * necessary KPIs. XP is end of life, we do not wish to
|
---|
| 5682 | * spend more time on it, so we don't put up a fuss there.
|
---|
| 5683 | * Vista users without SP1 can install SP1 (or later), darn it,
|
---|
| 5684 | * so refuse to load.
|
---|
| 5685 | */
|
---|
| 5686 | /** @todo Hack up an XP solution - will require hooking kernel APIs or doing bad
|
---|
| 5687 | * stuff to a couple of object types. */
|
---|
[51770] | 5688 | # ifndef VBOX_WITH_VISTA_NO_SP
|
---|
[53002] | 5689 | if (g_uNtVerCombined >= SUP_NT_VER_VISTA)
|
---|
[51770] | 5690 | # else
|
---|
[53002] | 5691 | if (g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 6001, 0, 0))
|
---|
[51770] | 5692 | # endif
|
---|
[53002] | 5693 | {
|
---|
| 5694 | DbgPrint("vboxdrv: ObRegisterCallbacks was not found. Please make sure you got the latest updates and service packs installed\n");
|
---|
| 5695 | rcNt = STATUS_SXS_VERSION_CONFLICT;
|
---|
| 5696 | }
|
---|
| 5697 | else
|
---|
| 5698 | {
|
---|
| 5699 | Log(("vboxdrv: ObRegisterCallbacks was not found; ignored pre-Vista\n"));
|
---|
| 5700 | return rcNt = STATUS_SUCCESS;
|
---|
| 5701 | }
|
---|
| 5702 | g_pvObCallbacksCookie = NULL;
|
---|
[51770] | 5703 | }
|
---|
[53002] | 5704 |
|
---|
| 5705 | /*
|
---|
| 5706 | * Drop process create/term notifications.
|
---|
| 5707 | */
|
---|
| 5708 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 5709 | g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, TRUE /*fRemove*/);
|
---|
[51770] | 5710 | else
|
---|
[53002] | 5711 | PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, TRUE /*fRemove*/);
|
---|
[51770] | 5712 | }
|
---|
| 5713 | else
|
---|
[104428] | 5714 | {
|
---|
| 5715 | DbgPrint("VBoxSup: PsSetCreateProcessNotifyRoutine%s failed with rcNt=%#x!\n",
|
---|
| 5716 | g_pfnPsSetCreateProcessNotifyRoutineEx ? "Ex" : "", rcNt); /* temp for @bugref{10657} */
|
---|
[53002] | 5717 | LogRel(("vboxdrv: PsSetCreateProcessNotifyRoutine%s failed with rcNt=%#x\n",
|
---|
| 5718 | g_pfnPsSetCreateProcessNotifyRoutineEx ? "Ex" : "", rcNt));
|
---|
[104428] | 5719 | }
|
---|
[53002] | 5720 | supHardenedWinTermImageVerifier();
|
---|
[51770] | 5721 | }
|
---|
| 5722 | else
|
---|
[53002] | 5723 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 5724 |
|
---|
| 5725 | RTSemMutexDestroy(g_hErrorInfoLock);
|
---|
| 5726 | g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
[51770] | 5727 | }
|
---|
| 5728 | else
|
---|
| 5729 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 5730 |
|
---|
| 5731 | RTSpinlockDestroy(g_hNtProtectLock);
|
---|
| 5732 | g_NtProtectTree = NIL_RTSPINLOCK;
|
---|
| 5733 | return rcNt;
|
---|
| 5734 | }
|
---|
| 5735 |
|
---|
| 5736 | #endif /* VBOX_WITH_HARDENING */
|
---|
| 5737 |
|
---|