[3542] | 1 | /* $Id: SUPDrv-win.cpp 68529 2017-08-25 08:39:33Z 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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[62490] | 7 | * Copyright (C) 2006-2016 Oracle Corporation
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[1] | 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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[5999] | 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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[1] | 25 | */
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| 26 |
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[57358] | 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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[51770] | 31 | #define IPRT_NT_MAP_TO_ZW
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[10662] | 32 | #define LOG_GROUP LOG_GROUP_SUP_DRV
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[10263] | 33 | #include "../SUPDrvInternal.h"
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[1] | 34 | #include <excpt.h>
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[25331] | 35 | #include <ntimage.h>
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| 36 |
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[1] | 37 | #include <iprt/assert.h>
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[51770] | 38 | #include <iprt/avl.h>
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| 39 | #include <iprt/ctype.h>
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[25300] | 40 | #include <iprt/initterm.h>
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| 41 | #include <iprt/mem.h>
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[390] | 42 | #include <iprt/process.h>
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[13496] | 43 | #include <iprt/power.h>
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[52735] | 44 | #include <iprt/rand.h>
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[53002] | 45 | #include <iprt/semaphore.h>
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[51770] | 46 | #include <iprt/spinlock.h>
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[25300] | 47 | #include <iprt/string.h>
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[10662] | 48 | #include <VBox/log.h>
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[51770] | 49 | #include <VBox/err.h>
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[1] | 50 |
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[49635] | 51 | #include <iprt/asm-amd64-x86.h>
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[1] | 52 |
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[51770] | 53 | #ifdef VBOX_WITH_HARDENING
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| 54 | # include "SUPHardenedVerify-win.h"
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| 55 | #endif
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[49635] | 56 |
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[51770] | 57 |
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[57358] | 58 | /*********************************************************************************************************************************
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| 59 | * Defined Constants And Macros *
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| 60 | *********************************************************************************************************************************/
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[1] | 61 | /** The support service name. */
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| 62 | #define SERVICE_NAME "VBoxDrv"
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[2653] | 63 | /** The Pool tag (VBox). */
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| 64 | #define SUPDRV_NT_POOL_TAG 'xoBV'
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[1] | 65 |
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[44188] | 66 | /** NT device name for user access. */
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[53002] | 67 | #define DEVICE_NAME_NT_USR L"\\Device\\VBoxDrvU"
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[51770] | 68 | #ifdef VBOX_WITH_HARDENING
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| 69 | /** Macro for checking for deflecting calls to the stub device. */
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| 70 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_DEV(a_pDevObj, a_pIrp) \
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[53002] | 71 | do { if ((a_pDevObj) == g_pDevObjStub) \
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| 72 | return supdrvNtCompleteRequest(STATUS_ACCESS_DENIED, a_pIrp); \
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| 73 | } while (0)
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| 74 | /** Macro for checking for deflecting calls to the stub and error info
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| 75 | * devices. */
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| 76 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(a_pDevObj, a_pIrp) \
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| 77 | do { if ((a_pDevObj) == g_pDevObjStub || (a_pDevObj) == g_pDevObjErrorInfo) \
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| 78 | return supdrvNtCompleteRequest(STATUS_ACCESS_DENIED, a_pIrp); \
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| 79 | } while (0)
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[51770] | 80 | #else
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[53002] | 81 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_DEV(a_pDevObj, a_pIrp) do {} while (0)
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| 82 | # define VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(a_pDevObj, a_pIrp) do {} while (0)
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[51770] | 83 | #endif
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| 84 |
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[51229] | 85 | /** Enables the fast I/O control code path. */
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[51744] | 86 | #define VBOXDRV_WITH_FAST_IO
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[44188] | 87 |
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[51229] | 88 |
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[57358] | 89 | /*********************************************************************************************************************************
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| 90 | * Structures and Typedefs *
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| 91 | *********************************************************************************************************************************/
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[44188] | 92 | /**
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| 93 | * Device extension used by VBoxDrvU.
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| 94 | */
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| 95 | typedef struct SUPDRVDEVEXTUSR
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| 96 | {
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| 97 | /** Global cookie (same location as in SUPDRVDEVEXT, different value). */
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| 98 | uint32_t u32Cookie;
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| 99 | /** Pointer to the main driver extension. */
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| 100 | PSUPDRVDEVEXT pMainDrvExt;
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| 101 | } SUPDRVDEVEXTUSR;
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| 102 | AssertCompileMembersAtSameOffset(SUPDRVDEVEXT, u32Cookie, SUPDRVDEVEXTUSR, u32Cookie);
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| 103 | /** Pointer to the VBoxDrvU device extension. */
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| 104 | typedef SUPDRVDEVEXTUSR *PSUPDRVDEVEXTUSR;
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| 105 | /** Value of SUPDRVDEVEXTUSR::u32Cookie. */
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| 106 | #define SUPDRVDEVEXTUSR_COOKIE UINT32_C(0x12345678)
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[1] | 107 |
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[44188] | 108 | /** Get the main device extension. */
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| 109 | #define SUPDRVNT_GET_DEVEXT(pDevObj) \
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| 110 | ( pDevObj != g_pDevObjUsr \
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| 111 | ? (PSUPDRVDEVEXT)pDevObj->DeviceExtension \
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| 112 | : ((PSUPDRVDEVEXTUSR)pDevObj->DeviceExtension)->pMainDrvExt )
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| 113 |
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[51770] | 114 | #ifdef VBOX_WITH_HARDENING
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[44188] | 115 |
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[51770] | 116 | /**
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[53002] | 117 | * Device extension used by VBoxDrvStub.
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[51770] | 118 | */
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| 119 | typedef struct SUPDRVDEVEXTSTUB
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| 120 | {
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| 121 | /** Common header. */
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| 122 | SUPDRVDEVEXTUSR Common;
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| 123 | } SUPDRVDEVEXTSTUB;
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[53002] | 124 | /** Pointer to the VBoxDrvStub device extension. */
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[51770] | 125 | typedef SUPDRVDEVEXTSTUB *PSUPDRVDEVEXTSTUB;
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| 126 | /** Value of SUPDRVDEVEXTSTUB::Common.u32Cookie. */
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| 127 | #define SUPDRVDEVEXTSTUB_COOKIE UINT32_C(0x90abcdef)
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| 128 |
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| 129 |
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| 130 | /**
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[53002] | 131 | * Device extension used by VBoxDrvErrorInfo.
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| 132 | */
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| 133 | typedef struct SUPDRVDEVEXTERRORINFO
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| 134 | {
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| 135 | /** Common header. */
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| 136 | SUPDRVDEVEXTUSR Common;
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| 137 | } SUPDRVDEVEXTERRORINFO;
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| 138 | /** Pointer to the VBoxDrvErrorInfo device extension. */
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| 139 | typedef SUPDRVDEVEXTERRORINFO *PSUPDRVDEVEXTERRORINFO;
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| 140 | /** Value of SUPDRVDEVEXTERRORINFO::Common.u32Cookie. */
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| 141 | #define SUPDRVDEVEXTERRORINFO_COOKIE UINT32_C(0xBadC0ca0)
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| 142 |
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| 143 | /**
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| 144 | * Error info for a failed VBoxDrv or VBoxDrvStub open attempt.
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| 145 | */
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| 146 | typedef struct SUPDRVNTERRORINFO
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| 147 | {
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| 148 | /** The list entry (in g_ErrorInfoHead). */
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| 149 | RTLISTNODE ListEntry;
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| 150 | /** The ID of the process this error info belongs to. */
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| 151 | HANDLE hProcessId;
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| 152 | /** The ID of the thread owning this info. */
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| 153 | HANDLE hThreadId;
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| 154 | /** Milliseconds createion timestamp (for cleaning up). */
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| 155 | uint64_t uCreatedMsTs;
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| 156 | /** Number of bytes of valid info. */
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| 157 | uint32_t cchErrorInfo;
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| 158 | /** The error info. */
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[57501] | 159 | char szErrorInfo[16384 - sizeof(RTLISTNODE) - sizeof(HANDLE)*2 - sizeof(uint64_t) - sizeof(uint32_t) - 0x20];
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[53002] | 160 | } SUPDRVNTERRORINFO;
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| 161 | /** Pointer to error info. */
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| 162 | typedef SUPDRVNTERRORINFO *PSUPDRVNTERRORINFO;
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| 163 |
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| 164 |
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| 165 | /**
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[51770] | 166 | * The kind of process we're protecting.
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| 167 | */
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| 168 | typedef enum SUPDRVNTPROTECTKIND
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| 169 | {
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| 170 | kSupDrvNtProtectKind_Invalid = 0,
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| 171 |
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| 172 | /** Stub process protection while performing process verification.
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| 173 | * Next: StubSpawning (or free) */
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| 174 | kSupDrvNtProtectKind_StubUnverified,
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| 175 | /** Stub process protection before it creates the VM process.
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| 176 | * Next: StubParent, StubDead. */
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| 177 | kSupDrvNtProtectKind_StubSpawning,
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| 178 | /** Stub process protection while having a VM process as child.
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| 179 | * Next: StubDead */
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| 180 | kSupDrvNtProtectKind_StubParent,
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| 181 | /** Dead stub process. */
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| 182 | kSupDrvNtProtectKind_StubDead,
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| 183 |
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| 184 | /** Potential VM process.
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| 185 | * Next: VmProcessConfirmed, VmProcessDead. */
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| 186 | kSupDrvNtProtectKind_VmProcessUnconfirmed,
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| 187 | /** Confirmed VM process.
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| 188 | * Next: VmProcessDead. */
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| 189 | kSupDrvNtProtectKind_VmProcessConfirmed,
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| 190 | /** Dead VM process. */
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| 191 | kSupDrvNtProtectKind_VmProcessDead,
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| 192 |
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| 193 | /** End of valid protection kinds. */
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| 194 | kSupDrvNtProtectKind_End
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| 195 | } SUPDRVNTPROTECTKIND;
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| 196 |
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| 197 | /**
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| 198 | * A NT process protection structure.
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| 199 | */
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| 200 | typedef struct SUPDRVNTPROTECT
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| 201 | {
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| 202 | /** The AVL node core structure. The process ID is the pid. */
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| 203 | AVLPVNODECORE AvlCore;
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| 204 | /** Magic value (SUPDRVNTPROTECT_MAGIC). */
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| 205 | uint32_t volatile u32Magic;
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| 206 | /** Reference counter. */
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| 207 | uint32_t volatile cRefs;
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| 208 | /** The kind of process we're protecting. */
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| 209 | SUPDRVNTPROTECTKIND volatile enmProcessKind;
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[57303] | 210 | /** Whether this structure is in the tree. */
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| 211 | bool fInTree : 1;
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[52905] | 212 | /** 7,: Hack to allow the supid themes service duplicate handle privileges to
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| 213 | * our process. */
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| 214 | bool fThemesFirstProcessCreateHandle : 1;
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[51770] | 215 | /** Vista, 7 & 8: Hack to allow more rights to the handle returned by
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| 216 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 217 | bool fFirstProcessCreateHandle : 1;
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| 218 | /** Vista, 7 & 8: Hack to allow more rights to the handle returned by
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| 219 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 220 | bool fFirstThreadCreateHandle : 1;
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| 221 | /** 8.1: Hack to allow more rights to the handle returned by
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| 222 | * NtCreateUserProcess. Only applicable to VmProcessUnconfirmed. */
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| 223 | bool fCsrssFirstProcessCreateHandle : 1;
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[52905] | 224 | /** Vista, 7 & 8: Hack to allow more rights to the handle duplicated by CSRSS
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| 225 | * during process creation. Only applicable to VmProcessUnconfirmed. On
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| 226 | * 32-bit systems we allow two as ZoneAlarm's system call hooks has been
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| 227 | * observed to do some seemingly unnecessary duplication work. */
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| 228 | int32_t volatile cCsrssFirstProcessDuplicateHandle;
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[51770] | 229 |
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| 230 | /** The parent PID for VM processes, otherwise NULL. */
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| 231 | HANDLE hParentPid;
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[52962] | 232 | /** The TID of the thread opening VBoxDrv or VBoxDrvStub, NULL if not opened. */
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| 233 | HANDLE hOpenTid;
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[51770] | 234 | /** The PID of the CSRSS process associated with this process. */
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| 235 | HANDLE hCsrssPid;
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| 236 | /** Pointer to the CSRSS process structure (referenced). */
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| 237 | PEPROCESS pCsrssProcess;
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| 238 | /** State dependent data. */
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| 239 | union
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| 240 | {
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| 241 | /** A stub process in the StubParent state will keep a reference to a child
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| 242 | * while it's in the VmProcessUnconfirmed state so that it can be cleaned up
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| 243 | * correctly if things doesn't work out. */
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| 244 | struct SUPDRVNTPROTECT *pChild;
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| 245 | /** A process in the VmProcessUnconfirmed state will keep a weak
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| 246 | * reference to the parent's protection structure so it can clean up the pChild
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[52962] | 247 | * reference the parent has to it. */
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[51770] | 248 | struct SUPDRVNTPROTECT *pParent;
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| 249 | } u;
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| 250 | } SUPDRVNTPROTECT;
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| 251 | /** Pointer to a NT process protection record. */
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| 252 | typedef SUPDRVNTPROTECT *PSUPDRVNTPROTECT;
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| 253 | /** The SUPDRVNTPROTECT::u32Magic value (Robert A. Heinlein). */
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| 254 | # define SUPDRVNTPROTECT_MAGIC UINT32_C(0x19070707)
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| 255 | /** The SUPDRVNTPROTECT::u32Magic value of a dead structure. */
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| 256 | # define SUPDRVNTPROTECT_MAGIC_DEAD UINT32_C(0x19880508)
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| 257 |
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[52735] | 258 | /** Pointer to ObGetObjectType. */
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| 259 | typedef POBJECT_TYPE (NTAPI *PFNOBGETOBJECTTYPE)(PVOID);
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[51770] | 260 | /** Pointer to ObRegisterCallbacks. */
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| 261 | typedef NTSTATUS (NTAPI *PFNOBREGISTERCALLBACKS)(POB_CALLBACK_REGISTRATION, PVOID *);
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| 262 | /** Pointer to ObUnregisterCallbacks. */
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| 263 | typedef VOID (NTAPI *PFNOBUNREGISTERCALLBACKS)(PVOID);
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| 264 | /** Pointer to PsSetCreateProcessNotifyRoutineEx. */
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| 265 | typedef NTSTATUS (NTAPI *PFNPSSETCREATEPROCESSNOTIFYROUTINEEX)(PCREATE_PROCESS_NOTIFY_ROUTINE_EX, BOOLEAN);
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| 266 | /** Pointer to PsReferenceProcessFilePointer. */
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| 267 | typedef NTSTATUS (NTAPI *PFNPSREFERENCEPROCESSFILEPOINTER)(PEPROCESS, PFILE_OBJECT *);
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| 268 | /** Pointer to PsIsProtectedProcessLight. */
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| 269 | typedef BOOLEAN (NTAPI *PFNPSISPROTECTEDPROCESSLIGHT)(PEPROCESS);
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[52735] | 270 | /** Pointer to ZwAlpcCreatePort. */
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| 271 | typedef NTSTATUS (NTAPI *PFNZWALPCCREATEPORT)(PHANDLE, POBJECT_ATTRIBUTES, struct _ALPC_PORT_ATTRIBUTES *);
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[51770] | 272 |
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| 273 | #endif /* VBOX_WITH_HARDENINIG */
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| 274 |
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| 275 |
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[57358] | 276 | /*********************************************************************************************************************************
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| 277 | * Internal Functions *
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| 278 | *********************************************************************************************************************************/
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[4800] | 279 | static void _stdcall VBoxDrvNtUnload(PDRIVER_OBJECT pDrvObj);
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| 280 | static NTSTATUS _stdcall VBoxDrvNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[38075] | 281 | static NTSTATUS _stdcall VBoxDrvNtCleanup(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[4800] | 282 | static NTSTATUS _stdcall VBoxDrvNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[51229] | 283 | #ifdef VBOXDRV_WITH_FAST_IO
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| 284 | static BOOLEAN _stdcall VBoxDrvNtFastIoDeviceControl(PFILE_OBJECT pFileObj, BOOLEAN fWait, PVOID pvInput, ULONG cbInput,
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| 285 | PVOID pvOutput, ULONG cbOutput, ULONG uCmd,
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| 286 | PIO_STATUS_BLOCK pIoStatus, PDEVICE_OBJECT pDevObj);
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| 287 | #endif
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[4800] | 288 | static NTSTATUS _stdcall VBoxDrvNtDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 289 | static int VBoxDrvNtDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack);
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[10263] | 290 | static NTSTATUS _stdcall VBoxDrvNtInternalDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[13495] | 291 | static VOID _stdcall VBoxPowerDispatchCallback(PVOID pCallbackContext, PVOID pArgument1, PVOID pArgument2);
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[53002] | 292 | static NTSTATUS _stdcall VBoxDrvNtRead(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[4800] | 293 | static NTSTATUS _stdcall VBoxDrvNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 294 | static NTSTATUS VBoxDrvNtErr2NtStatus(int rc);
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[51770] | 295 | #ifdef VBOX_WITH_HARDENING
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| 296 | static NTSTATUS supdrvNtProtectInit(void);
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| 297 | static void supdrvNtProtectTerm(void);
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| 298 | static int supdrvNtProtectCreate(PSUPDRVNTPROTECT *ppNtProtect, HANDLE hPid,
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| 299 | SUPDRVNTPROTECTKIND enmProcessKind, bool fLink);
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| 300 | static void supdrvNtProtectRelease(PSUPDRVNTPROTECT pNtProtect);
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| 301 | static PSUPDRVNTPROTECT supdrvNtProtectLookup(HANDLE hPid);
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| 302 | static int supdrvNtProtectFindAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect);
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| 303 | static int supdrvNtProtectVerifyProcess(PSUPDRVNTPROTECT pNtProtect);
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[1] | 304 |
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[51770] | 305 | static bool supdrvNtIsDebuggerAttached(void);
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[53002] | 306 | static void supdrvNtErrorInfoCleanupProcess(HANDLE hProcessId);
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| 307 |
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[51770] | 308 | #endif
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[1] | 309 |
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[51770] | 310 |
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[57358] | 311 | /*********************************************************************************************************************************
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| 312 | * Exported Functions *
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| 313 | *********************************************************************************************************************************/
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[20374] | 314 | RT_C_DECLS_BEGIN
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[62666] | 315 | NTSTATUS _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath);
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[20374] | 316 | RT_C_DECLS_END
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[1] | 317 |
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| 318 |
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[57358] | 319 | /*********************************************************************************************************************************
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| 320 | * Global Variables *
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| 321 | *********************************************************************************************************************************/
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[44188] | 322 | /** Pointer to the system device instance. */
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| 323 | static PDEVICE_OBJECT g_pDevObjSys = NULL;
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| 324 | /** Pointer to the user device instance. */
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| 325 | static PDEVICE_OBJECT g_pDevObjUsr = NULL;
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[51229] | 326 | #ifdef VBOXDRV_WITH_FAST_IO
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| 327 | /** Fast I/O dispatch table. */
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| 328 | static FAST_IO_DISPATCH const g_VBoxDrvFastIoDispatch =
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| 329 | {
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| 330 | /* .SizeOfFastIoDispatch = */ sizeof(g_VBoxDrvFastIoDispatch),
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| 331 | /* .FastIoCheckIfPossible = */ NULL,
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| 332 | /* .FastIoRead = */ NULL,
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| 333 | /* .FastIoWrite = */ NULL,
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| 334 | /* .FastIoQueryBasicInfo = */ NULL,
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| 335 | /* .FastIoQueryStandardInfo = */ NULL,
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| 336 | /* .FastIoLock = */ NULL,
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| 337 | /* .FastIoUnlockSingle = */ NULL,
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| 338 | /* .FastIoUnlockAll = */ NULL,
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| 339 | /* .FastIoUnlockAllByKey = */ NULL,
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| 340 | /* .FastIoDeviceControl = */ VBoxDrvNtFastIoDeviceControl,
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| 341 | /* .AcquireFileForNtCreateSection = */ NULL,
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| 342 | /* .ReleaseFileForNtCreateSection = */ NULL,
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| 343 | /* .FastIoDetachDevice = */ NULL,
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| 344 | /* .FastIoQueryNetworkOpenInfo = */ NULL,
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| 345 | /* .AcquireForModWrite = */ NULL,
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| 346 | /* .MdlRead = */ NULL,
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| 347 | /* .MdlReadComplete = */ NULL,
|
---|
| 348 | /* .PrepareMdlWrite = */ NULL,
|
---|
| 349 | /* .MdlWriteComplete = */ NULL,
|
---|
| 350 | /* .FastIoReadCompressed = */ NULL,
|
---|
| 351 | /* .FastIoWriteCompressed = */ NULL,
|
---|
| 352 | /* .MdlReadCompleteCompressed = */ NULL,
|
---|
| 353 | /* .MdlWriteCompleteCompressed = */ NULL,
|
---|
| 354 | /* .FastIoQueryOpen = */ NULL,
|
---|
| 355 | /* .ReleaseForModWrite = */ NULL,
|
---|
| 356 | /* .AcquireForCcFlush = */ NULL,
|
---|
| 357 | /* .ReleaseForCcFlush = */ NULL,
|
---|
| 358 | };
|
---|
| 359 | #endif /* VBOXDRV_WITH_FAST_IO */
|
---|
[44188] | 360 |
|
---|
[64255] | 361 | /** Default ZERO value. */
|
---|
| 362 | static ULONG g_fOptDefaultZero = 0;
|
---|
| 363 | /** Registry values.
|
---|
| 364 | * We wrap these in a struct to ensure they are followed by a little zero
|
---|
| 365 | * padding in order to limit the chance of trouble on unpatched systems. */
|
---|
| 366 | struct
|
---|
| 367 | {
|
---|
| 368 | /** The ForceAsync registry value. */
|
---|
| 369 | ULONG fOptForceAsyncTsc;
|
---|
| 370 | /** Padding. */
|
---|
| 371 | uint64_t au64Padding[2];
|
---|
| 372 | } g_Options = { FALSE, 0, 0 };
|
---|
| 373 | /** Registry query table for RtlQueryRegistryValues. */
|
---|
| 374 | static RTL_QUERY_REGISTRY_TABLE g_aRegValues[] =
|
---|
| 375 | {
|
---|
| 376 | {
|
---|
| 377 | /* .QueryRoutine = */ NULL,
|
---|
| 378 | /* .Flags = */ RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_TYPECHECK,
|
---|
| 379 | /* .Name = */ L"ForceAsyncTsc",
|
---|
| 380 | /* .EntryContext = */ &g_Options.fOptForceAsyncTsc,
|
---|
| 381 | /* .DefaultType = */ (REG_DWORD << RTL_QUERY_REGISTRY_TYPECHECK_SHIFT) | REG_DWORD,
|
---|
| 382 | /* .DefaultData = */ &g_fOptDefaultZero,
|
---|
| 383 | /* .DefaultLength = */ sizeof(g_fOptDefaultZero),
|
---|
| 384 | },
|
---|
| 385 | { NULL, 0, NULL, NULL, 0, NULL, 0 } /* terminator entry. */
|
---|
| 386 | };
|
---|
| 387 |
|
---|
| 388 | /** Pointer to KeQueryMaximumGroupCount. */
|
---|
| 389 | static PFNKEQUERYMAXIMUMGROUPCOUNT g_pfnKeQueryMaximumGroupCount = NULL;
|
---|
| 390 | /** Pointer to KeGetProcessorIndexFromNumber. */
|
---|
| 391 | static PFNKEGETPROCESSORINDEXFROMNUMBER g_pfnKeGetProcessorIndexFromNumber = NULL;
|
---|
| 392 | /** Pointer to KeGetProcessorNumberFromIndex. */
|
---|
| 393 | static PFNKEGETPROCESSORNUMBERFROMINDEX g_pfnKeGetProcessorNumberFromIndex = NULL;
|
---|
| 394 |
|
---|
[51770] | 395 | #ifdef VBOX_WITH_HARDENING
|
---|
| 396 | /** Pointer to the stub device instance. */
|
---|
| 397 | static PDEVICE_OBJECT g_pDevObjStub = NULL;
|
---|
| 398 | /** Spinlock protecting g_NtProtectTree as well as the releasing of protection
|
---|
| 399 | * structures. */
|
---|
| 400 | static RTSPINLOCK g_hNtProtectLock = NIL_RTSPINLOCK;
|
---|
| 401 | /** AVL tree of SUPDRVNTPROTECT structures. */
|
---|
| 402 | static AVLPVTREE g_NtProtectTree = NULL;
|
---|
| 403 | /** Cookie returned by ObRegisterCallbacks for the callbacks. */
|
---|
| 404 | static PVOID g_pvObCallbacksCookie = NULL;
|
---|
| 405 | /** Combined windows NT version number. See SUP_MAKE_NT_VER_COMBINED. */
|
---|
| 406 | uint32_t g_uNtVerCombined = 0;
|
---|
[52735] | 407 | /** Pointer to ObGetObjectType if available.. */
|
---|
| 408 | static PFNOBGETOBJECTTYPE g_pfnObGetObjectType = NULL;
|
---|
[51770] | 409 | /** Pointer to ObRegisterCallbacks if available.. */
|
---|
| 410 | static PFNOBREGISTERCALLBACKS g_pfnObRegisterCallbacks = NULL;
|
---|
| 411 | /** Pointer to ObUnregisterCallbacks if available.. */
|
---|
| 412 | static PFNOBUNREGISTERCALLBACKS g_pfnObUnRegisterCallbacks = NULL;
|
---|
| 413 | /** Pointer to PsSetCreateProcessNotifyRoutineEx if available.. */
|
---|
| 414 | static PFNPSSETCREATEPROCESSNOTIFYROUTINEEX g_pfnPsSetCreateProcessNotifyRoutineEx = NULL;
|
---|
| 415 | /** Pointer to PsReferenceProcessFilePointer if available. */
|
---|
| 416 | static PFNPSREFERENCEPROCESSFILEPOINTER g_pfnPsReferenceProcessFilePointer = NULL;
|
---|
| 417 | /** Pointer to PsIsProtectedProcessLight. */
|
---|
| 418 | static PFNPSISPROTECTEDPROCESSLIGHT g_pfnPsIsProtectedProcessLight = NULL;
|
---|
[52735] | 419 | /** Pointer to ZwAlpcCreatePort. */
|
---|
| 420 | static PFNZWALPCCREATEPORT g_pfnZwAlpcCreatePort = NULL;
|
---|
[44188] | 421 |
|
---|
[51770] | 422 | # ifdef RT_ARCH_AMD64
|
---|
| 423 | extern "C" {
|
---|
| 424 | /** Pointer to KiServiceLinkage (used to fake missing ZwQueryVirtualMemory on
|
---|
| 425 | * XP64 / W2K3-64). */
|
---|
| 426 | PFNRT g_pfnKiServiceLinkage = NULL;
|
---|
| 427 | /** Pointer to KiServiceInternal (used to fake missing ZwQueryVirtualMemory on
|
---|
| 428 | * XP64 / W2K3-64) */
|
---|
| 429 | PFNRT g_pfnKiServiceInternal = NULL;
|
---|
| 430 | }
|
---|
| 431 | # endif
|
---|
[52735] | 432 | /** The primary ALPC port object type. (LpcPortObjectType at init time.) */
|
---|
| 433 | static POBJECT_TYPE g_pAlpcPortObjectType1 = NULL;
|
---|
| 434 | /** The secondary ALPC port object type. (Sampled at runtime.) */
|
---|
| 435 | static POBJECT_TYPE volatile g_pAlpcPortObjectType2 = NULL;
|
---|
| 436 |
|
---|
[53002] | 437 | /** Pointer to the error information device instance. */
|
---|
| 438 | static PDEVICE_OBJECT g_pDevObjErrorInfo = NULL;
|
---|
| 439 | /** Fast mutex semaphore protecting the error info list. */
|
---|
| 440 | static RTSEMMUTEX g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
| 441 | /** Head of the error info (SUPDRVNTERRORINFO). */
|
---|
| 442 | static RTLISTANCHOR g_ErrorInfoHead;
|
---|
| 443 |
|
---|
[51770] | 444 | #endif
|
---|
| 445 |
|
---|
| 446 |
|
---|
[1] | 447 | /**
|
---|
[44188] | 448 | * Takes care of creating the devices and their symbolic links.
|
---|
| 449 | *
|
---|
| 450 | * @returns NT status code.
|
---|
| 451 | * @param pDrvObj Pointer to driver object.
|
---|
| 452 | */
|
---|
| 453 | static NTSTATUS vboxdrvNtCreateDevices(PDRIVER_OBJECT pDrvObj)
|
---|
| 454 | {
|
---|
| 455 | /*
|
---|
| 456 | * System device.
|
---|
| 457 | */
|
---|
| 458 | UNICODE_STRING DevName;
|
---|
[53002] | 459 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_SYS);
|
---|
[44188] | 460 | NTSTATUS rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXT), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjSys);
|
---|
| 461 | if (NT_SUCCESS(rcNt))
|
---|
| 462 | {
|
---|
[51947] | 463 | /*
|
---|
| 464 | * User device.
|
---|
| 465 | */
|
---|
[53002] | 466 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_USR);
|
---|
[51947] | 467 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTUSR), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjUsr);
|
---|
[44188] | 468 | if (NT_SUCCESS(rcNt))
|
---|
| 469 | {
|
---|
[51947] | 470 | PSUPDRVDEVEXTUSR pDevExtUsr = (PSUPDRVDEVEXTUSR)g_pDevObjUsr->DeviceExtension;
|
---|
| 471 | pDevExtUsr->pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 472 | pDevExtUsr->u32Cookie = SUPDRVDEVEXTUSR_COOKIE;
|
---|
| 473 |
|
---|
| 474 | #ifdef VBOX_WITH_HARDENING
|
---|
[44188] | 475 | /*
|
---|
[51947] | 476 | * Hardened stub device.
|
---|
[44188] | 477 | */
|
---|
[53002] | 478 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_STUB);
|
---|
[51947] | 479 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTSTUB), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &g_pDevObjStub);
|
---|
[44188] | 480 | if (NT_SUCCESS(rcNt))
|
---|
| 481 | {
|
---|
| 482 | if (NT_SUCCESS(rcNt))
|
---|
| 483 | {
|
---|
[51947] | 484 | PSUPDRVDEVEXTSTUB pDevExtStub = (PSUPDRVDEVEXTSTUB)g_pDevObjStub->DeviceExtension;
|
---|
| 485 | pDevExtStub->Common.pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 486 | pDevExtStub->Common.u32Cookie = SUPDRVDEVEXTSTUB_COOKIE;
|
---|
[53002] | 487 |
|
---|
| 488 | /*
|
---|
| 489 | * Hardened error information device.
|
---|
| 490 | */
|
---|
| 491 | RtlInitUnicodeString(&DevName, SUPDRV_NT_DEVICE_NAME_ERROR_INFO);
|
---|
| 492 | rcNt = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXTERRORINFO), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE,
|
---|
| 493 | &g_pDevObjErrorInfo);
|
---|
| 494 | if (NT_SUCCESS(rcNt))
|
---|
| 495 | {
|
---|
| 496 | g_pDevObjErrorInfo->Flags |= DO_BUFFERED_IO;
|
---|
| 497 |
|
---|
| 498 | if (NT_SUCCESS(rcNt))
|
---|
| 499 | {
|
---|
| 500 | PSUPDRVDEVEXTERRORINFO pDevExtStub = (PSUPDRVDEVEXTERRORINFO)g_pDevObjStub->DeviceExtension;
|
---|
| 501 | pDevExtStub->Common.pMainDrvExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 502 | pDevExtStub->Common.u32Cookie = SUPDRVDEVEXTERRORINFO_COOKIE;
|
---|
| 503 |
|
---|
[51770] | 504 | #endif
|
---|
[53002] | 505 | /* Done. */
|
---|
| 506 | return rcNt;
|
---|
| 507 | #ifdef VBOX_WITH_HARDENING
|
---|
| 508 | }
|
---|
[51770] | 509 |
|
---|
[53002] | 510 | /* Bail out. */
|
---|
| 511 | IoDeleteDevice(g_pDevObjErrorInfo);
|
---|
| 512 | g_pDevObjErrorInfo = NULL;
|
---|
| 513 | }
|
---|
[51947] | 514 | }
|
---|
[51770] | 515 |
|
---|
[51947] | 516 | /* Bail out. */
|
---|
| 517 | IoDeleteDevice(g_pDevObjStub);
|
---|
[44188] | 518 | g_pDevObjUsr = NULL;
|
---|
| 519 | }
|
---|
[51947] | 520 | IoDeleteDevice(g_pDevObjUsr);
|
---|
| 521 | g_pDevObjUsr = NULL;
|
---|
[62666] | 522 | #endif
|
---|
[44188] | 523 | }
|
---|
| 524 | IoDeleteDevice(g_pDevObjSys);
|
---|
| 525 | g_pDevObjSys = NULL;
|
---|
| 526 | }
|
---|
| 527 | return rcNt;
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | /**
|
---|
| 531 | * Destroys the devices and links created by vboxdrvNtCreateDevices.
|
---|
| 532 | */
|
---|
| 533 | static void vboxdrvNtDestroyDevices(void)
|
---|
| 534 | {
|
---|
[51770] | 535 | if (g_pDevObjUsr)
|
---|
| 536 | {
|
---|
| 537 | PSUPDRVDEVEXTUSR pDevExtUsr = (PSUPDRVDEVEXTUSR)g_pDevObjUsr->DeviceExtension;
|
---|
| 538 | pDevExtUsr->pMainDrvExt = NULL;
|
---|
| 539 | }
|
---|
| 540 | #ifdef VBOX_WITH_HARDENING
|
---|
| 541 | if (g_pDevObjStub)
|
---|
| 542 | {
|
---|
| 543 | PSUPDRVDEVEXTSTUB pDevExtStub = (PSUPDRVDEVEXTSTUB)g_pDevObjStub->DeviceExtension;
|
---|
| 544 | pDevExtStub->Common.pMainDrvExt = NULL;
|
---|
| 545 | }
|
---|
[53002] | 546 | if (g_pDevObjErrorInfo)
|
---|
| 547 | {
|
---|
| 548 | PSUPDRVDEVEXTERRORINFO pDevExtErrorInfo = (PSUPDRVDEVEXTERRORINFO)g_pDevObjStub->DeviceExtension;
|
---|
| 549 | pDevExtErrorInfo->Common.pMainDrvExt = NULL;
|
---|
| 550 | }
|
---|
[51770] | 551 | #endif
|
---|
| 552 |
|
---|
| 553 | #ifdef VBOX_WITH_HARDENING
|
---|
[53002] | 554 | IoDeleteDevice(g_pDevObjErrorInfo);
|
---|
| 555 | g_pDevObjErrorInfo = NULL;
|
---|
[51770] | 556 | IoDeleteDevice(g_pDevObjStub);
|
---|
| 557 | g_pDevObjStub = NULL;
|
---|
| 558 | #endif
|
---|
[44188] | 559 | IoDeleteDevice(g_pDevObjUsr);
|
---|
| 560 | g_pDevObjUsr = NULL;
|
---|
| 561 | IoDeleteDevice(g_pDevObjSys);
|
---|
| 562 | g_pDevObjSys = NULL;
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 |
|
---|
| 566 | /**
|
---|
[1] | 567 | * Driver entry point.
|
---|
| 568 | *
|
---|
[1355] | 569 | * @returns appropriate status code.
|
---|
[1] | 570 | * @param pDrvObj Pointer to driver object.
|
---|
| 571 | * @param pRegPath Registry base path.
|
---|
| 572 | */
|
---|
[62666] | 573 | NTSTATUS _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)
|
---|
[1] | 574 | {
|
---|
[62666] | 575 | RT_NOREF1(pRegPath);
|
---|
| 576 |
|
---|
[1] | 577 | /*
|
---|
[51229] | 578 | * Sanity checks.
|
---|
| 579 | */
|
---|
| 580 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
| 581 | if (g_VBoxDrvFastIoDispatch.FastIoDeviceControl != VBoxDrvNtFastIoDeviceControl)
|
---|
| 582 | {
|
---|
| 583 | DbgPrint("VBoxDrv: FastIoDeviceControl=%p instead of %p\n",
|
---|
| 584 | g_VBoxDrvFastIoDispatch.FastIoDeviceControl, VBoxDrvNtFastIoDeviceControl);
|
---|
| 585 | return STATUS_INTERNAL_ERROR;
|
---|
| 586 | }
|
---|
| 587 | #endif
|
---|
| 588 |
|
---|
| 589 | /*
|
---|
[64255] | 590 | * Query options first so any overflows on unpatched machines will do less
|
---|
| 591 | * harm (see MS11-011 / 2393802 / 2011-03-18).
|
---|
| 592 | *
|
---|
| 593 | * Unfortunately, pRegPath isn't documented as zero terminated, even if it
|
---|
| 594 | * quite likely always is, so we have to make a copy here.
|
---|
| 595 | */
|
---|
| 596 | NTSTATUS rcNt;
|
---|
| 597 | PWSTR pwszCopy = (PWSTR)ExAllocatePoolWithTag(NonPagedPool, pRegPath->Length + sizeof(WCHAR), 'VBox');
|
---|
| 598 | if (pwszCopy)
|
---|
| 599 | {
|
---|
| 600 | memcpy(pwszCopy, pRegPath->Buffer, pRegPath->Length);
|
---|
| 601 | pwszCopy[pRegPath->Length / sizeof(WCHAR)] = '\0';
|
---|
| 602 | rcNt = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE | RTL_REGISTRY_OPTIONAL, pwszCopy,
|
---|
| 603 | g_aRegValues, NULL /*pvContext*/, NULL /*pvEnv*/);
|
---|
| 604 | ExFreePoolWithTag(pwszCopy, 'VBox');
|
---|
| 605 | /* Probably safe to ignore rcNt here. */
|
---|
| 606 | }
|
---|
| 607 |
|
---|
| 608 | /*
|
---|
| 609 | * Resolve methods we want but isn't available everywhere.
|
---|
| 610 | */
|
---|
| 611 | UNICODE_STRING RoutineName;
|
---|
| 612 | RtlInitUnicodeString(&RoutineName, L"KeQueryMaximumGroupCount");
|
---|
| 613 | g_pfnKeQueryMaximumGroupCount = (PFNKEQUERYMAXIMUMGROUPCOUNT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 614 |
|
---|
| 615 | RtlInitUnicodeString(&RoutineName, L"KeGetProcessorIndexFromNumber");
|
---|
| 616 | g_pfnKeGetProcessorIndexFromNumber = (PFNKEGETPROCESSORINDEXFROMNUMBER)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 617 |
|
---|
| 618 | RtlInitUnicodeString(&RoutineName, L"KeGetProcessorNumberFromIndex");
|
---|
| 619 | g_pfnKeGetProcessorNumberFromIndex = (PFNKEGETPROCESSORNUMBERFROMINDEX)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 620 |
|
---|
| 621 | Assert( (g_pfnKeGetProcessorNumberFromIndex != NULL) == (g_pfnKeGetProcessorIndexFromNumber != NULL)
|
---|
| 622 | && (g_pfnKeGetProcessorNumberFromIndex != NULL) == (g_pfnKeQueryMaximumGroupCount != NULL)); /* all or nothing. */
|
---|
| 623 |
|
---|
| 624 | /*
|
---|
[51770] | 625 | * Initialize the runtime (IPRT).
|
---|
[1] | 626 | */
|
---|
[51770] | 627 | int vrc = RTR0Init(0);
|
---|
| 628 | if (RT_SUCCESS(vrc))
|
---|
[1] | 629 | {
|
---|
[51770] | 630 | Log(("VBoxDrv::DriverEntry\n"));
|
---|
| 631 |
|
---|
| 632 | #ifdef VBOX_WITH_HARDENING
|
---|
| 633 | /*
|
---|
| 634 | * Initialize process protection.
|
---|
| 635 | */
|
---|
| 636 | rcNt = supdrvNtProtectInit();
|
---|
| 637 | if (NT_SUCCESS(rcNt))
|
---|
| 638 | #endif
|
---|
[1] | 639 | {
|
---|
[44188] | 640 | /*
|
---|
[51770] | 641 | * Create device.
|
---|
| 642 | * (That means creating a device object and a symbolic link so the DOS
|
---|
| 643 | * subsystems (OS/2, win32, ++) can access the device.)
|
---|
[44188] | 644 | */
|
---|
[51770] | 645 | rcNt = vboxdrvNtCreateDevices(pDrvObj);
|
---|
| 646 | if (NT_SUCCESS(rcNt))
|
---|
[1] | 647 | {
|
---|
| 648 | /*
|
---|
[51770] | 649 | * Initialize the device extension.
|
---|
[1] | 650 | */
|
---|
[51770] | 651 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 652 | memset(pDevExt, 0, sizeof(*pDevExt));
|
---|
[9587] | 653 |
|
---|
[51770] | 654 | vrc = supdrvInitDevExt(pDevExt, sizeof(SUPDRVSESSION));
|
---|
| 655 | if (!vrc)
|
---|
| 656 | {
|
---|
| 657 | /*
|
---|
| 658 | * Setup the driver entry points in pDrvObj.
|
---|
| 659 | */
|
---|
| 660 | pDrvObj->DriverUnload = VBoxDrvNtUnload;
|
---|
| 661 | pDrvObj->MajorFunction[IRP_MJ_CREATE] = VBoxDrvNtCreate;
|
---|
| 662 | pDrvObj->MajorFunction[IRP_MJ_CLEANUP] = VBoxDrvNtCleanup;
|
---|
| 663 | pDrvObj->MajorFunction[IRP_MJ_CLOSE] = VBoxDrvNtClose;
|
---|
| 664 | pDrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = VBoxDrvNtDeviceControl;
|
---|
| 665 | pDrvObj->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = VBoxDrvNtInternalDeviceControl;
|
---|
[53002] | 666 | pDrvObj->MajorFunction[IRP_MJ_READ] = VBoxDrvNtRead;
|
---|
[51770] | 667 | pDrvObj->MajorFunction[IRP_MJ_WRITE] = VBoxDrvNtNotSupportedStub;
|
---|
[13495] | 668 |
|
---|
[51229] | 669 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
[51770] | 670 | /* Fast I/O to speed up guest execution roundtrips. */
|
---|
| 671 | pDrvObj->FastIoDispatch = (PFAST_IO_DISPATCH)&g_VBoxDrvFastIoDispatch;
|
---|
[51229] | 672 | #endif
|
---|
| 673 |
|
---|
[51770] | 674 | /*
|
---|
| 675 | * Register ourselves for power state changes. We don't
|
---|
| 676 | * currently care if this fails.
|
---|
| 677 | */
|
---|
| 678 | UNICODE_STRING CallbackName;
|
---|
| 679 | RtlInitUnicodeString(&CallbackName, L"\\Callback\\PowerState");
|
---|
[13495] | 680 |
|
---|
[51770] | 681 | OBJECT_ATTRIBUTES Attr;
|
---|
| 682 | InitializeObjectAttributes(&Attr, &CallbackName, OBJ_CASE_INSENSITIVE, NULL, NULL);
|
---|
[13495] | 683 |
|
---|
[51770] | 684 | rcNt = ExCreateCallback(&pDevExt->pObjPowerCallback, &Attr, TRUE, TRUE);
|
---|
| 685 | if (rcNt == STATUS_SUCCESS)
|
---|
| 686 | pDevExt->hPowerCallback = ExRegisterCallback(pDevExt->pObjPowerCallback,
|
---|
| 687 | VBoxPowerDispatchCallback,
|
---|
| 688 | g_pDevObjSys);
|
---|
[13495] | 689 |
|
---|
[51770] | 690 | /*
|
---|
| 691 | * Done! Returning success!
|
---|
| 692 | */
|
---|
| 693 | Log(("VBoxDrv::DriverEntry returning STATUS_SUCCESS\n"));
|
---|
| 694 | return STATUS_SUCCESS;
|
---|
| 695 | }
|
---|
[13495] | 696 |
|
---|
[51770] | 697 | Log(("supdrvInitDevExit failed with vrc=%d!\n", vrc));
|
---|
| 698 | rcNt = VBoxDrvNtErr2NtStatus(vrc);
|
---|
[9587] | 699 |
|
---|
[51770] | 700 | vboxdrvNtDestroyDevices();
|
---|
| 701 | }
|
---|
| 702 | #ifdef VBOX_WITH_HARDENING
|
---|
| 703 | supdrvNtProtectTerm();
|
---|
| 704 | #endif
|
---|
[1] | 705 | }
|
---|
[51941] | 706 | RTTermRunCallbacks(RTTERMREASON_UNLOAD, 0);
|
---|
[51770] | 707 | RTR0Term();
|
---|
[1] | 708 | }
|
---|
[51770] | 709 | else
|
---|
| 710 | {
|
---|
| 711 | Log(("RTR0Init failed with vrc=%d!\n", vrc));
|
---|
| 712 | rcNt = VBoxDrvNtErr2NtStatus(vrc);
|
---|
| 713 | }
|
---|
[44188] | 714 | if (NT_SUCCESS(rcNt))
|
---|
| 715 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 716 | return rcNt;
|
---|
[1] | 717 | }
|
---|
| 718 |
|
---|
| 719 |
|
---|
| 720 | /**
|
---|
| 721 | * Unload the driver.
|
---|
| 722 | *
|
---|
| 723 | * @param pDrvObj Driver object.
|
---|
| 724 | */
|
---|
[4800] | 725 | void _stdcall VBoxDrvNtUnload(PDRIVER_OBJECT pDrvObj)
|
---|
[1] | 726 | {
|
---|
[44188] | 727 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
[1] | 728 |
|
---|
[25465] | 729 | Log(("VBoxDrvNtUnload at irql %d\n", KeGetCurrentIrql()));
|
---|
[7462] | 730 |
|
---|
[13495] | 731 | /* Clean up the power callback registration. */
|
---|
| 732 | if (pDevExt->hPowerCallback)
|
---|
| 733 | ExUnregisterCallback(pDevExt->hPowerCallback);
|
---|
| 734 | if (pDevExt->pObjPowerCallback)
|
---|
| 735 | ObDereferenceObject(pDevExt->pObjPowerCallback);
|
---|
| 736 |
|
---|
[1] | 737 | /*
|
---|
| 738 | * We ASSUME that it's not possible to unload a driver with open handles.
|
---|
| 739 | */
|
---|
| 740 | supdrvDeleteDevExt(pDevExt);
|
---|
[51770] | 741 | #ifdef VBOX_WITH_HARDENING
|
---|
| 742 | supdrvNtProtectTerm();
|
---|
| 743 | #endif
|
---|
[51941] | 744 | RTTermRunCallbacks(RTTERMREASON_UNLOAD, 0);
|
---|
[9578] | 745 | RTR0Term();
|
---|
[44188] | 746 | vboxdrvNtDestroyDevices();
|
---|
| 747 |
|
---|
| 748 | NOREF(pDrvObj);
|
---|
[1] | 749 | }
|
---|
| 750 |
|
---|
| 751 |
|
---|
| 752 | /**
|
---|
[51770] | 753 | * For simplifying request completion into a simple return statement, extended
|
---|
| 754 | * version.
|
---|
| 755 | *
|
---|
| 756 | * @returns rcNt
|
---|
| 757 | * @param rcNt The status code.
|
---|
| 758 | * @param uInfo Extra info value.
|
---|
| 759 | * @param pIrp The IRP.
|
---|
| 760 | */
|
---|
| 761 | DECLINLINE(NTSTATUS) supdrvNtCompleteRequestEx(NTSTATUS rcNt, ULONG_PTR uInfo, PIRP pIrp)
|
---|
| 762 | {
|
---|
| 763 | pIrp->IoStatus.Status = rcNt;
|
---|
| 764 | pIrp->IoStatus.Information = uInfo;
|
---|
| 765 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 766 | return rcNt;
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 |
|
---|
| 770 | /**
|
---|
| 771 | * For simplifying request completion into a simple return statement.
|
---|
| 772 | *
|
---|
| 773 | * @returns rcNt
|
---|
| 774 | * @param rcNt The status code.
|
---|
| 775 | * @param pIrp The IRP.
|
---|
| 776 | */
|
---|
| 777 | DECLINLINE(NTSTATUS) supdrvNtCompleteRequest(NTSTATUS rcNt, PIRP pIrp)
|
---|
| 778 | {
|
---|
| 779 | return supdrvNtCompleteRequestEx(rcNt, 0 /*uInfo*/, pIrp);
|
---|
| 780 | }
|
---|
| 781 |
|
---|
| 782 |
|
---|
| 783 | /**
|
---|
[1] | 784 | * Create (i.e. Open) file entry point.
|
---|
| 785 | *
|
---|
| 786 | * @param pDevObj Device object.
|
---|
| 787 | * @param pIrp Request packet.
|
---|
| 788 | */
|
---|
[4800] | 789 | NTSTATUS _stdcall VBoxDrvNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 790 | {
|
---|
[38323] | 791 | Log(("VBoxDrvNtCreate: RequestorMode=%d\n", pIrp->RequestorMode));
|
---|
[51770] | 792 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[1] | 793 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
[51770] | 794 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[1] | 795 |
|
---|
| 796 | /*
|
---|
| 797 | * We are not remotely similar to a directory...
|
---|
| 798 | * (But this is possible.)
|
---|
| 799 | */
|
---|
| 800 | if (pStack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
|
---|
[51770] | 801 | return supdrvNtCompleteRequest(STATUS_NOT_A_DIRECTORY, pIrp);
|
---|
[1] | 802 |
|
---|
| 803 | /*
|
---|
[41067] | 804 | * Don't create a session for kernel clients, they'll close the handle
|
---|
| 805 | * immediately and work with the file object via
|
---|
[51770] | 806 | * VBoxDrvNtInternalDeviceControl. The first request will be one to
|
---|
| 807 | * create a session.
|
---|
[1] | 808 | */
|
---|
[38323] | 809 | NTSTATUS rcNt;
|
---|
| 810 | if (pIrp->RequestorMode == KernelMode)
|
---|
[51770] | 811 | {
|
---|
| 812 | if (pDevObj == g_pDevObjSys)
|
---|
| 813 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 814 |
|
---|
| 815 | rcNt = STATUS_ACCESS_DENIED;
|
---|
| 816 | }
|
---|
[53002] | 817 | #ifdef VBOX_WITH_HARDENING
|
---|
| 818 | /*
|
---|
| 819 | * Anyone can open the error device.
|
---|
| 820 | */
|
---|
| 821 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 822 | {
|
---|
| 823 | pFileObj->FsContext = NULL;
|
---|
| 824 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 825 | }
|
---|
| 826 | #endif
|
---|
[38323] | 827 | else
|
---|
| 828 | {
|
---|
[51770] | 829 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
[38323] | 830 | /*
|
---|
[51770] | 831 | * Make sure no debuggers are attached to non-user processes.
|
---|
[38323] | 832 | */
|
---|
[51770] | 833 | if ( pDevObj != g_pDevObjUsr
|
---|
| 834 | && supdrvNtIsDebuggerAttached())
|
---|
| 835 | {
|
---|
| 836 | LogRel(("vboxdrv: Process %p is being debugged, access to vboxdrv / vboxdrvu declined.\n",
|
---|
| 837 | PsGetProcessId(PsGetCurrentProcess())));
|
---|
| 838 | rcNt = STATUS_TRUST_FAILURE;
|
---|
| 839 | }
|
---|
| 840 | else
|
---|
| 841 | #endif
|
---|
| 842 | {
|
---|
| 843 | int rc = VINF_SUCCESS;
|
---|
| 844 |
|
---|
| 845 | #ifdef VBOX_WITH_HARDENING
|
---|
| 846 | /*
|
---|
| 847 | * Access to the stub device is only granted to processes which
|
---|
| 848 | * passes verification.
|
---|
| 849 | *
|
---|
| 850 | * Note! The stub device has no need for a SUPDRVSESSION structure,
|
---|
| 851 | * so the it uses the SUPDRVNTPROTECT directly instead.
|
---|
| 852 | */
|
---|
| 853 | if (pDevObj == g_pDevObjStub)
|
---|
| 854 | {
|
---|
| 855 | PSUPDRVNTPROTECT pNtProtect = NULL;
|
---|
| 856 | rc = supdrvNtProtectCreate(&pNtProtect, PsGetProcessId(PsGetCurrentProcess()),
|
---|
| 857 | kSupDrvNtProtectKind_StubUnverified, true /*fLink*/);
|
---|
| 858 | if (RT_SUCCESS(rc))
|
---|
| 859 | {
|
---|
| 860 | rc = supdrvNtProtectFindAssociatedCsrss(pNtProtect);
|
---|
| 861 | if (RT_SUCCESS(rc))
|
---|
| 862 | rc = supdrvNtProtectVerifyProcess(pNtProtect);
|
---|
| 863 | if (RT_SUCCESS(rc))
|
---|
| 864 | {
|
---|
| 865 | pFileObj->FsContext = pNtProtect; /* Keeps reference. */
|
---|
| 866 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 867 | }
|
---|
| 868 |
|
---|
| 869 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 870 | }
|
---|
| 871 | LogRel(("vboxdrv: Declined %p access to VBoxDrvStub: rc=%d\n", PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 872 | }
|
---|
| 873 | /*
|
---|
| 874 | * Unrestricted access is only granted to a process in the
|
---|
| 875 | * VmProcessUnconfirmed state that checks out correctly and is
|
---|
| 876 | * allowed to transition to VmProcessConfirmed. Again, only one
|
---|
| 877 | * session per process.
|
---|
| 878 | */
|
---|
| 879 | else if (pDevObj != g_pDevObjUsr)
|
---|
| 880 | {
|
---|
| 881 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(PsGetProcessId(PsGetCurrentProcess()));
|
---|
| 882 | if (pNtProtect)
|
---|
| 883 | {
|
---|
| 884 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 885 | {
|
---|
| 886 | rc = supdrvNtProtectVerifyProcess(pNtProtect);
|
---|
| 887 | if (RT_SUCCESS(rc))
|
---|
| 888 | {
|
---|
| 889 | /* Create a session. */
|
---|
| 890 | PSUPDRVSESSION pSession;
|
---|
| 891 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, pDevObj == g_pDevObjSys /*fUnrestricted*/,
|
---|
| 892 | &pSession);
|
---|
| 893 | if (RT_SUCCESS(rc))
|
---|
| 894 | {
|
---|
| 895 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
| 896 | supdrvSessionRelease(pSession);
|
---|
| 897 | if (RT_SUCCESS(rc))
|
---|
| 898 | {
|
---|
| 899 | pSession->pNtProtect = pNtProtect; /* Keeps reference. */
|
---|
| 900 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 901 | }
|
---|
| 902 | }
|
---|
| 903 |
|
---|
| 904 | /* No second attempt. */
|
---|
| 905 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 906 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 907 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 908 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 909 |
|
---|
| 910 | LogRel(("vboxdrv: supdrvCreateSession failed for process %p: rc=%d.\n",
|
---|
| 911 | PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 912 | }
|
---|
| 913 | else
|
---|
| 914 | LogRel(("vboxdrv: Process %p failed process verification: rc=%d.\n",
|
---|
| 915 | PsGetProcessId(PsGetCurrentProcess()), rc));
|
---|
| 916 | }
|
---|
| 917 | else
|
---|
| 918 | {
|
---|
| 919 | LogRel(("vboxdrv: %p is not a budding VM process (enmProcessKind=%d).\n",
|
---|
| 920 | PsGetProcessId(PsGetCurrentProcess()), pNtProtect->enmProcessKind));
|
---|
[57201] | 921 | rc = VERR_SUPDRV_NOT_BUDDING_VM_PROCESS_2;
|
---|
[51770] | 922 | }
|
---|
| 923 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 924 | }
|
---|
| 925 | else
|
---|
| 926 | {
|
---|
| 927 | LogRel(("vboxdrv: %p is not a budding VM process.\n", PsGetProcessId(PsGetCurrentProcess())));
|
---|
[57201] | 928 | rc = VERR_SUPDRV_NOT_BUDDING_VM_PROCESS_1;
|
---|
[51770] | 929 | }
|
---|
| 930 | }
|
---|
| 931 | /*
|
---|
| 932 | * Call common code to create an unprivileged session.
|
---|
| 933 | */
|
---|
| 934 | else
|
---|
| 935 | {
|
---|
| 936 | PSUPDRVSESSION pSession;
|
---|
| 937 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, false /*fUnrestricted*/, &pSession);
|
---|
| 938 | if (RT_SUCCESS(rc))
|
---|
| 939 | {
|
---|
| 940 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
| 941 | supdrvSessionRelease(pSession);
|
---|
| 942 | if (RT_SUCCESS(rc))
|
---|
| 943 | {
|
---|
| 944 | pFileObj->FsContext = pSession; /* Keeps reference. No race. */
|
---|
| 945 | pSession->pNtProtect = NULL;
|
---|
| 946 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 947 | }
|
---|
| 948 | }
|
---|
| 949 | }
|
---|
| 950 |
|
---|
| 951 | #else /* !VBOX_WITH_HARDENING */
|
---|
| 952 | /*
|
---|
| 953 | * Call common code to create a session.
|
---|
| 954 | */
|
---|
| 955 | pFileObj->FsContext = NULL;
|
---|
| 956 | PSUPDRVSESSION pSession;
|
---|
| 957 | rc = supdrvCreateSession(pDevExt, true /*fUser*/, pDevObj == g_pDevObjSys /*fUnrestricted*/, &pSession);
|
---|
| 958 | if (RT_SUCCESS(rc))
|
---|
| 959 | {
|
---|
| 960 | rc = supdrvSessionHashTabInsert(pDevExt, pSession, (PSUPDRVSESSION *)&pFileObj->FsContext, NULL);
|
---|
| 961 | supdrvSessionRelease(pSession);
|
---|
| 962 | if (RT_SUCCESS(rc))
|
---|
| 963 | return supdrvNtCompleteRequestEx(STATUS_SUCCESS, FILE_OPENED, pIrp);
|
---|
| 964 |
|
---|
| 965 | }
|
---|
| 966 | #endif /* !VBOX_WITH_HARDENING */
|
---|
| 967 |
|
---|
| 968 | /* bail out */
|
---|
| 969 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 970 | }
|
---|
[38323] | 971 | }
|
---|
[1] | 972 |
|
---|
[51770] | 973 | Assert(!NT_SUCCESS(rcNt));
|
---|
| 974 | pFileObj->FsContext = NULL;
|
---|
| 975 | return supdrvNtCompleteRequest(rcNt, pIrp); /* Note. the IoStatus is completely ignored on error. */
|
---|
[1] | 976 | }
|
---|
| 977 |
|
---|
| 978 |
|
---|
| 979 | /**
|
---|
[38075] | 980 | * Clean up file handle entry point.
|
---|
| 981 | *
|
---|
[68529] | 982 | * This is called when the last handle reference is released, or something like
|
---|
| 983 | * that. In the case of IoGetDeviceObjectPointer, this is called as it closes
|
---|
| 984 | * the handle, however it will go on using the file object afterwards...
|
---|
| 985 | *
|
---|
[38075] | 986 | * @param pDevObj Device object.
|
---|
| 987 | * @param pIrp Request packet.
|
---|
| 988 | */
|
---|
| 989 | NTSTATUS _stdcall VBoxDrvNtCleanup(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 990 | {
|
---|
[44188] | 991 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[38075] | 992 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
| 993 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
| 994 |
|
---|
[51770] | 995 | #ifdef VBOX_WITH_HARDENING
|
---|
| 996 | if (pDevObj == g_pDevObjStub)
|
---|
[38075] | 997 | {
|
---|
[51770] | 998 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)pFileObj->FsContext;
|
---|
| 999 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pNtProtect=%p\n", pDevExt, pFileObj, pNtProtect));
|
---|
| 1000 | if (pNtProtect)
|
---|
| 1001 | {
|
---|
| 1002 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1003 | pFileObj->FsContext = NULL;
|
---|
| 1004 | }
|
---|
[38075] | 1005 | }
|
---|
[53002] | 1006 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1007 | supdrvNtErrorInfoCleanupProcess(PsGetCurrentProcessId());
|
---|
[51770] | 1008 | else
|
---|
| 1009 | #endif
|
---|
| 1010 | {
|
---|
| 1011 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1012 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
| 1013 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pSession=%p\n", pDevExt, pFileObj, pSession));
|
---|
| 1014 | if (pSession)
|
---|
| 1015 | {
|
---|
| 1016 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 1017 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 1018 | }
|
---|
| 1019 | }
|
---|
[38075] | 1020 |
|
---|
[51770] | 1021 | return supdrvNtCompleteRequest(STATUS_SUCCESS, pIrp);
|
---|
[38075] | 1022 | }
|
---|
| 1023 |
|
---|
| 1024 |
|
---|
| 1025 | /**
|
---|
[1] | 1026 | * Close file entry point.
|
---|
| 1027 | *
|
---|
| 1028 | * @param pDevObj Device object.
|
---|
| 1029 | * @param pIrp Request packet.
|
---|
| 1030 | */
|
---|
[4800] | 1031 | NTSTATUS _stdcall VBoxDrvNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1032 | {
|
---|
[44188] | 1033 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
[38075] | 1034 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[1] | 1035 | PFILE_OBJECT pFileObj = pStack->FileObject;
|
---|
[38075] | 1036 |
|
---|
[51770] | 1037 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1038 | if (pDevObj == g_pDevObjStub)
|
---|
[38075] | 1039 | {
|
---|
[51770] | 1040 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)pFileObj->FsContext;
|
---|
| 1041 | Log(("VBoxDrvNtClose: pDevExt=%p pFileObj=%p pNtProtect=%p\n", pDevExt, pFileObj, pNtProtect));
|
---|
| 1042 | if (pNtProtect)
|
---|
| 1043 | {
|
---|
| 1044 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 1045 | pFileObj->FsContext = NULL;
|
---|
| 1046 | }
|
---|
[38075] | 1047 | }
|
---|
[53002] | 1048 | else if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1049 | supdrvNtErrorInfoCleanupProcess(PsGetCurrentProcessId());
|
---|
[51770] | 1050 | else
|
---|
| 1051 | #endif
|
---|
| 1052 | {
|
---|
| 1053 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1054 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
| 1055 | Log(("VBoxDrvNtCleanup: pDevExt=%p pFileObj=%p pSession=%p\n", pDevExt, pFileObj, pSession));
|
---|
| 1056 | if (pSession)
|
---|
| 1057 | {
|
---|
| 1058 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 1059 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 1060 | }
|
---|
| 1061 | }
|
---|
[38075] | 1062 |
|
---|
[51770] | 1063 | return supdrvNtCompleteRequest(STATUS_SUCCESS, pIrp);
|
---|
| 1064 | }
|
---|
[1] | 1065 |
|
---|
[51770] | 1066 |
|
---|
| 1067 | #ifdef VBOXDRV_WITH_FAST_IO
|
---|
| 1068 | /**
|
---|
| 1069 | * Fast I/O device control callback.
|
---|
| 1070 | *
|
---|
| 1071 | * This performs no buffering, neither on the way in or out.
|
---|
| 1072 | *
|
---|
| 1073 | * @returns TRUE if handled, FALSE if the normal I/O control routine should be
|
---|
| 1074 | * called.
|
---|
| 1075 | * @param pFileObj The file object.
|
---|
| 1076 | * @param fWait Whether it's a blocking call
|
---|
| 1077 | * @param pvInput The input buffer as specified by the user.
|
---|
| 1078 | * @param cbInput The size of the input buffer.
|
---|
| 1079 | * @param pvOutput The output buffer as specfied by the user.
|
---|
| 1080 | * @param cbOutput The size of the output buffer.
|
---|
[58340] | 1081 | * @param uCmd The I/O command/function being invoked.
|
---|
[51770] | 1082 | * @param pIoStatus Where to return the status of the operation.
|
---|
| 1083 | * @param pDevObj The device object..
|
---|
| 1084 | */
|
---|
| 1085 | static BOOLEAN _stdcall VBoxDrvNtFastIoDeviceControl(PFILE_OBJECT pFileObj, BOOLEAN fWait, PVOID pvInput, ULONG cbInput,
|
---|
| 1086 | PVOID pvOutput, ULONG cbOutput, ULONG uCmd,
|
---|
| 1087 | PIO_STATUS_BLOCK pIoStatus, PDEVICE_OBJECT pDevObj)
|
---|
| 1088 | {
|
---|
[62666] | 1089 | RT_NOREF1(fWait);
|
---|
| 1090 |
|
---|
[53002] | 1091 | /*
|
---|
| 1092 | * Only the normal devices, not the stub or error info ones.
|
---|
| 1093 | */
|
---|
| 1094 | if (pDevObj != g_pDevObjSys && pDevObj != g_pDevObjUsr)
|
---|
| 1095 | {
|
---|
| 1096 | pIoStatus->Status = STATUS_NOT_SUPPORTED;
|
---|
| 1097 | pIoStatus->Information = 0;
|
---|
| 1098 | return TRUE;
|
---|
| 1099 | }
|
---|
[51770] | 1100 |
|
---|
| 1101 | /*
|
---|
| 1102 | * Check the input a little bit and get a the session references.
|
---|
| 1103 | */
|
---|
[53002] | 1104 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1105 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1106 | (PSUPDRVSESSION *)&pFileObj->FsContext);
|
---|
[51770] | 1107 | if (!pSession)
|
---|
| 1108 | {
|
---|
| 1109 | pIoStatus->Status = STATUS_TRUST_FAILURE;
|
---|
| 1110 | pIoStatus->Information = 0;
|
---|
| 1111 | return TRUE;
|
---|
| 1112 | }
|
---|
| 1113 |
|
---|
| 1114 | if (pSession->fUnrestricted)
|
---|
| 1115 | {
|
---|
| 1116 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
| 1117 | if (supdrvNtIsDebuggerAttached())
|
---|
| 1118 | {
|
---|
| 1119 | pIoStatus->Status = STATUS_TRUST_FAILURE;
|
---|
| 1120 | pIoStatus->Information = 0;
|
---|
| 1121 | supdrvSessionRelease(pSession);
|
---|
| 1122 | return TRUE;
|
---|
| 1123 | }
|
---|
| 1124 | #endif
|
---|
| 1125 |
|
---|
| 1126 | /*
|
---|
| 1127 | * Deal with the 2-3 high-speed IOCtl that takes their arguments from
|
---|
| 1128 | * the session and iCmd, and does not return anything.
|
---|
| 1129 | */
|
---|
| 1130 | if ( uCmd == SUP_IOCTL_FAST_DO_RAW_RUN
|
---|
| 1131 | || uCmd == SUP_IOCTL_FAST_DO_HM_RUN
|
---|
| 1132 | || uCmd == SUP_IOCTL_FAST_DO_NOP)
|
---|
| 1133 | {
|
---|
| 1134 | int rc = supdrvIOCtlFast(uCmd, (unsigned)(uintptr_t)pvOutput/* VMCPU id */, pDevExt, pSession);
|
---|
| 1135 | pIoStatus->Status = RT_SUCCESS(rc) ? STATUS_SUCCESS : STATUS_INVALID_PARAMETER;
|
---|
| 1136 | pIoStatus->Information = 0; /* Could be used to pass rc if we liked. */
|
---|
| 1137 | supdrvSessionRelease(pSession);
|
---|
| 1138 | return TRUE;
|
---|
| 1139 | }
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
| 1142 | /*
|
---|
| 1143 | * The normal path.
|
---|
| 1144 | */
|
---|
| 1145 | NTSTATUS rcNt;
|
---|
| 1146 | unsigned cbOut = 0;
|
---|
| 1147 | int rc = 0;
|
---|
| 1148 | Log2(("VBoxDrvNtFastIoDeviceControl(%p): ioctl=%#x pvIn=%p cbIn=%#x pvOut=%p cbOut=%#x pSession=%p\n",
|
---|
| 1149 | pDevExt, uCmd, pvInput, cbInput, pvOutput, cbOutput, pSession));
|
---|
| 1150 |
|
---|
| 1151 | # ifdef RT_ARCH_AMD64
|
---|
| 1152 | /* Don't allow 32-bit processes to do any I/O controls. */
|
---|
| 1153 | if (!IoIs32bitProcess(NULL))
|
---|
| 1154 | # endif
|
---|
| 1155 | {
|
---|
| 1156 | /*
|
---|
| 1157 | * In this fast I/O device control path we have to do our own buffering.
|
---|
| 1158 | */
|
---|
| 1159 | /* Verify that the I/O control function matches our pattern. */
|
---|
| 1160 | if ((uCmd & 0x3) == METHOD_BUFFERED)
|
---|
| 1161 | {
|
---|
| 1162 | /* Get the header so we can validate it a little bit against the
|
---|
| 1163 | parameters before allocating any memory kernel for the reqest. */
|
---|
| 1164 | SUPREQHDR Hdr;
|
---|
| 1165 | if (cbInput >= sizeof(Hdr) && cbOutput >= sizeof(Hdr))
|
---|
| 1166 | {
|
---|
| 1167 | __try
|
---|
| 1168 | {
|
---|
| 1169 | RtlCopyMemory(&Hdr, pvInput, sizeof(Hdr));
|
---|
| 1170 | rcNt = STATUS_SUCCESS;
|
---|
| 1171 | }
|
---|
| 1172 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1173 | {
|
---|
| 1174 | rcNt = GetExceptionCode();
|
---|
[62666] | 1175 | Hdr.cbIn = Hdr.cbOut = 0; /* shut up MSC */
|
---|
[51770] | 1176 | }
|
---|
| 1177 | }
|
---|
| 1178 | else
|
---|
[62666] | 1179 | {
|
---|
| 1180 | Hdr.cbIn = Hdr.cbOut = 0; /* shut up MSC */
|
---|
[51770] | 1181 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[62666] | 1182 | }
|
---|
[51770] | 1183 | if (NT_SUCCESS(rcNt))
|
---|
| 1184 | {
|
---|
| 1185 | /* Verify that the sizes in the request header are correct. */
|
---|
| 1186 | ULONG cbBuf = RT_MAX(cbInput, cbOutput);
|
---|
| 1187 | if ( cbInput == Hdr.cbIn
|
---|
| 1188 | && cbOutput == Hdr.cbOut
|
---|
| 1189 | && cbBuf < _1M*16)
|
---|
| 1190 | {
|
---|
| 1191 | /* Allocate a buffer and copy all the input into it. */
|
---|
| 1192 | PSUPREQHDR pHdr = (PSUPREQHDR)ExAllocatePoolWithTag(NonPagedPool, cbBuf, 'VBox');
|
---|
| 1193 | if (pHdr)
|
---|
| 1194 | {
|
---|
| 1195 | __try
|
---|
| 1196 | {
|
---|
| 1197 | RtlCopyMemory(pHdr, pvInput, cbInput);
|
---|
| 1198 | if (cbInput < cbBuf)
|
---|
| 1199 | RtlZeroMemory((uint8_t *)pHdr + cbInput, cbBuf - cbInput);
|
---|
[54666] | 1200 | if (!memcmp(pHdr, &Hdr, sizeof(Hdr)))
|
---|
| 1201 | rcNt = STATUS_SUCCESS;
|
---|
| 1202 | else
|
---|
| 1203 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[51770] | 1204 | }
|
---|
| 1205 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1206 | {
|
---|
| 1207 | rcNt = GetExceptionCode();
|
---|
| 1208 | }
|
---|
[54666] | 1209 | if (NT_SUCCESS(rcNt))
|
---|
[51770] | 1210 | {
|
---|
| 1211 | /*
|
---|
[54666] | 1212 | * Now call the common code to do the real work.
|
---|
[51770] | 1213 | */
|
---|
[54666] | 1214 | rc = supdrvIOCtl(uCmd, pDevExt, pSession, pHdr, cbBuf);
|
---|
| 1215 | if (RT_SUCCESS(rc))
|
---|
[51770] | 1216 | {
|
---|
[54666] | 1217 | /*
|
---|
| 1218 | * Copy back the result.
|
---|
| 1219 | */
|
---|
| 1220 | cbOut = pHdr->cbOut;
|
---|
| 1221 | if (cbOut > cbOutput)
|
---|
[51770] | 1222 | {
|
---|
[54666] | 1223 | cbOut = cbOutput;
|
---|
| 1224 | OSDBGPRINT(("VBoxDrvNtFastIoDeviceControl: too much output! %#x > %#x; uCmd=%#x!\n",
|
---|
| 1225 | pHdr->cbOut, cbOut, uCmd));
|
---|
[51770] | 1226 | }
|
---|
[54666] | 1227 | if (cbOut)
|
---|
[51770] | 1228 | {
|
---|
[54666] | 1229 | __try
|
---|
| 1230 | {
|
---|
| 1231 | RtlCopyMemory(pvOutput, pHdr, cbOut);
|
---|
| 1232 | rcNt = STATUS_SUCCESS;
|
---|
| 1233 | }
|
---|
| 1234 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1235 | {
|
---|
| 1236 | rcNt = GetExceptionCode();
|
---|
| 1237 | }
|
---|
[51770] | 1238 | }
|
---|
[54666] | 1239 | else
|
---|
| 1240 | rcNt = STATUS_SUCCESS;
|
---|
[51770] | 1241 | }
|
---|
[54666] | 1242 | else if (rc == VERR_INVALID_PARAMETER)
|
---|
| 1243 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[51770] | 1244 | else
|
---|
[54666] | 1245 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1246 | Log2(("VBoxDrvNtFastIoDeviceControl: returns %#x cbOut=%d rc=%#x\n", rcNt, cbOut, rc));
|
---|
[51770] | 1247 | }
|
---|
| 1248 | else
|
---|
[54666] | 1249 | Log(("VBoxDrvNtFastIoDeviceControl: Error reading %u bytes of user memory at %p (uCmd=%#x)\n",
|
---|
| 1250 | cbInput, pvInput, uCmd));
|
---|
[54664] | 1251 | ExFreePoolWithTag(pHdr, 'VBox');
|
---|
[51770] | 1252 | }
|
---|
[54666] | 1253 | else
|
---|
| 1254 | rcNt = STATUS_NO_MEMORY;
|
---|
[51770] | 1255 | }
|
---|
| 1256 | else
|
---|
| 1257 | {
|
---|
| 1258 | Log(("VBoxDrvNtFastIoDeviceControl: Mismatching sizes (%#x) - Hdr=%#lx/%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1259 | uCmd, Hdr.cbIn, Hdr.cbOut, cbInput, cbOutput));
|
---|
| 1260 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1261 | }
|
---|
| 1262 | }
|
---|
| 1263 | }
|
---|
| 1264 | else
|
---|
| 1265 | {
|
---|
| 1266 | Log(("VBoxDrvNtFastIoDeviceControl: not buffered request (%#x) - not supported\n", uCmd));
|
---|
| 1267 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1268 | }
|
---|
| 1269 | }
|
---|
| 1270 | # ifdef RT_ARCH_AMD64
|
---|
| 1271 | else
|
---|
| 1272 | {
|
---|
| 1273 | Log(("VBoxDrvNtFastIoDeviceControl: WOW64 req - not supported\n"));
|
---|
| 1274 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1275 | }
|
---|
| 1276 | # endif
|
---|
| 1277 |
|
---|
| 1278 | /* complete the request. */
|
---|
| 1279 | pIoStatus->Status = rcNt;
|
---|
| 1280 | pIoStatus->Information = cbOut;
|
---|
| 1281 | supdrvSessionRelease(pSession);
|
---|
| 1282 | return TRUE; /* handled. */
|
---|
[1] | 1283 | }
|
---|
[51770] | 1284 | #endif /* VBOXDRV_WITH_FAST_IO */
|
---|
[1] | 1285 |
|
---|
| 1286 |
|
---|
| 1287 | /**
|
---|
| 1288 | * Device I/O Control entry point.
|
---|
| 1289 | *
|
---|
| 1290 | * @param pDevObj Device object.
|
---|
| 1291 | * @param pIrp Request packet.
|
---|
| 1292 | */
|
---|
[4800] | 1293 | NTSTATUS _stdcall VBoxDrvNtDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1294 | {
|
---|
[53002] | 1295 | VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(pDevObj, pIrp);
|
---|
[51770] | 1296 |
|
---|
[44188] | 1297 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1298 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[51770] | 1299 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, RTProcSelf(), RTR0ProcHandleSelf(),
|
---|
| 1300 | (PSUPDRVSESSION *)&pStack->FileObject->FsContext);
|
---|
[1] | 1301 |
|
---|
[51770] | 1302 | if (!RT_VALID_PTR(pSession))
|
---|
| 1303 | return supdrvNtCompleteRequest(STATUS_TRUST_FAILURE, pIrp);
|
---|
| 1304 |
|
---|
[1] | 1305 | /*
|
---|
[51229] | 1306 | * Deal with the 2-3 high-speed IOCtl that takes their arguments from
|
---|
| 1307 | * the session and iCmd, and does not return anything.
|
---|
[1] | 1308 | */
|
---|
[51770] | 1309 | if (pSession->fUnrestricted)
|
---|
| 1310 | {
|
---|
| 1311 | #if defined(VBOX_WITH_HARDENING) && !defined(VBOX_WITHOUT_DEBUGGER_CHECKS)
|
---|
| 1312 | if (supdrvNtIsDebuggerAttached())
|
---|
| 1313 | {
|
---|
| 1314 | supdrvSessionRelease(pSession);
|
---|
| 1315 | return supdrvNtCompleteRequest(STATUS_TRUST_FAILURE, pIrp);
|
---|
| 1316 | }
|
---|
| 1317 | #endif
|
---|
| 1318 |
|
---|
| 1319 | ULONG ulCmd = pStack->Parameters.DeviceIoControl.IoControlCode;
|
---|
| 1320 | if ( ulCmd == SUP_IOCTL_FAST_DO_RAW_RUN
|
---|
[44188] | 1321 | || ulCmd == SUP_IOCTL_FAST_DO_HM_RUN
|
---|
| 1322 | || ulCmd == SUP_IOCTL_FAST_DO_NOP)
|
---|
[51770] | 1323 | {
|
---|
| 1324 | int rc = supdrvIOCtlFast(ulCmd, (unsigned)(uintptr_t)pIrp->UserBuffer /* VMCPU id */, pDevExt, pSession);
|
---|
[48132] | 1325 |
|
---|
[51770] | 1326 | /* Complete the I/O request. */
|
---|
| 1327 | supdrvSessionRelease(pSession);
|
---|
| 1328 | return supdrvNtCompleteRequest(RT_SUCCESS(rc) ? STATUS_SUCCESS : STATUS_INVALID_PARAMETER, pIrp);
|
---|
| 1329 | }
|
---|
[1] | 1330 | }
|
---|
[2515] | 1331 |
|
---|
[4800] | 1332 | return VBoxDrvNtDeviceControlSlow(pDevExt, pSession, pIrp, pStack);
|
---|
[2515] | 1333 | }
|
---|
| 1334 |
|
---|
| 1335 |
|
---|
| 1336 | /**
|
---|
[4800] | 1337 | * Worker for VBoxDrvNtDeviceControl that takes the slow IOCtl functions.
|
---|
[2515] | 1338 | *
|
---|
| 1339 | * @returns NT status code.
|
---|
| 1340 | *
|
---|
[58340] | 1341 | * @param pDevExt Device extension.
|
---|
[2515] | 1342 | * @param pSession The session.
|
---|
| 1343 | * @param pIrp Request packet.
|
---|
| 1344 | * @param pStack The stack location containing the DeviceControl parameters.
|
---|
| 1345 | */
|
---|
[4800] | 1346 | static int VBoxDrvNtDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack)
|
---|
[2515] | 1347 | {
|
---|
[4800] | 1348 | NTSTATUS rcNt;
|
---|
[68529] | 1349 | uint32_t cbOut = 0;
|
---|
[2515] | 1350 | int rc = 0;
|
---|
[25465] | 1351 | Log2(("VBoxDrvNtDeviceControlSlow(%p,%p): ioctl=%#x pBuf=%p cbIn=%#x cbOut=%#x pSession=%p\n",
|
---|
| 1352 | pDevExt, pIrp, pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1353 | pIrp->AssociatedIrp.SystemBuffer, pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1354 | pStack->Parameters.DeviceIoControl.OutputBufferLength, pSession));
|
---|
[2515] | 1355 |
|
---|
[3672] | 1356 | #ifdef RT_ARCH_AMD64
|
---|
[2515] | 1357 | /* Don't allow 32-bit processes to do any I/O controls. */
|
---|
| 1358 | if (!IoIs32bitProcess(pIrp))
|
---|
[1] | 1359 | #endif
|
---|
[2515] | 1360 | {
|
---|
| 1361 | /* Verify that it's a buffered CTL. */
|
---|
| 1362 | if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
|
---|
| 1363 | {
|
---|
[4800] | 1364 | /* Verify that the sizes in the request header are correct. */
|
---|
| 1365 | PSUPREQHDR pHdr = (PSUPREQHDR)pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1366 | if ( pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr)
|
---|
| 1367 | && pStack->Parameters.DeviceIoControl.InputBufferLength == pHdr->cbIn
|
---|
| 1368 | && pStack->Parameters.DeviceIoControl.OutputBufferLength == pHdr->cbOut)
|
---|
| 1369 | {
|
---|
[52575] | 1370 | /* Zero extra output bytes to make sure we don't leak anything. */
|
---|
| 1371 | if (pHdr->cbIn < pHdr->cbOut)
|
---|
| 1372 | RtlZeroMemory((uint8_t *)pHdr + pHdr->cbIn, pHdr->cbOut - pHdr->cbIn);
|
---|
| 1373 |
|
---|
[4800] | 1374 | /*
|
---|
| 1375 | * Do the job.
|
---|
| 1376 | */
|
---|
[52575] | 1377 | rc = supdrvIOCtl(pStack->Parameters.DeviceIoControl.IoControlCode, pDevExt, pSession, pHdr,
|
---|
| 1378 | RT_MAX(pHdr->cbIn, pHdr->cbOut));
|
---|
[4800] | 1379 | if (!rc)
|
---|
| 1380 | {
|
---|
| 1381 | rcNt = STATUS_SUCCESS;
|
---|
| 1382 | cbOut = pHdr->cbOut;
|
---|
| 1383 | if (cbOut > pStack->Parameters.DeviceIoControl.OutputBufferLength)
|
---|
| 1384 | {
|
---|
| 1385 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
[68529] | 1386 | OSDBGPRINT(("VBoxDrvNtDeviceControlSlow: too much output! %#x > %#x; uCmd=%#x!\n",
|
---|
[4800] | 1387 | pHdr->cbOut, cbOut, pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
| 1388 | }
|
---|
| 1389 | }
|
---|
| 1390 | else
|
---|
| 1391 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[25465] | 1392 | Log2(("VBoxDrvNtDeviceControlSlow: returns %#x cbOut=%d rc=%#x\n", rcNt, cbOut, rc));
|
---|
[4800] | 1393 | }
|
---|
| 1394 | else
|
---|
| 1395 | {
|
---|
[25465] | 1396 | Log(("VBoxDrvNtDeviceControlSlow: Mismatching sizes (%#x) - Hdr=%#lx/%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1397 | pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1398 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cbIn : 0,
|
---|
| 1399 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cbOut : 0,
|
---|
| 1400 | pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1401 | pStack->Parameters.DeviceIoControl.OutputBufferLength));
|
---|
[4800] | 1402 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1403 | }
|
---|
[2515] | 1404 | }
|
---|
| 1405 | else
|
---|
[4800] | 1406 | {
|
---|
[25465] | 1407 | Log(("VBoxDrvNtDeviceControlSlow: not buffered request (%#x) - not supported\n",
|
---|
| 1408 | pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
[4800] | 1409 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1410 | }
|
---|
[2515] | 1411 | }
|
---|
[3672] | 1412 | #ifdef RT_ARCH_AMD64
|
---|
[2515] | 1413 | else
|
---|
[4800] | 1414 | {
|
---|
[25465] | 1415 | Log(("VBoxDrvNtDeviceControlSlow: WOW64 req - not supported\n"));
|
---|
[4800] | 1416 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1417 | }
|
---|
[2515] | 1418 | #endif
|
---|
[1] | 1419 |
|
---|
| 1420 | /* complete the request. */
|
---|
[2515] | 1421 | pIrp->IoStatus.Status = rcNt;
|
---|
[4800] | 1422 | pIrp->IoStatus.Information = cbOut;
|
---|
[51770] | 1423 | supdrvSessionRelease(pSession);
|
---|
[1] | 1424 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1425 | return rcNt;
|
---|
| 1426 | }
|
---|
| 1427 |
|
---|
| 1428 |
|
---|
| 1429 | /**
|
---|
[10263] | 1430 | * Internal Device I/O Control entry point, used for IDC.
|
---|
| 1431 | *
|
---|
| 1432 | * @param pDevObj Device object.
|
---|
| 1433 | * @param pIrp Request packet.
|
---|
| 1434 | */
|
---|
| 1435 | NTSTATUS _stdcall VBoxDrvNtInternalDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 1436 | {
|
---|
[53002] | 1437 | VBOXDRV_COMPLETE_IRP_AND_RETURN_IF_STUB_OR_ERROR_INFO_DEV(pDevObj, pIrp);
|
---|
[51770] | 1438 |
|
---|
[44188] | 1439 | PSUPDRVDEVEXT pDevExt = SUPDRVNT_GET_DEVEXT(pDevObj);
|
---|
| 1440 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
[10263] | 1441 | PFILE_OBJECT pFileObj = pStack ? pStack->FileObject : NULL;
|
---|
| 1442 | PSUPDRVSESSION pSession = pFileObj ? (PSUPDRVSESSION)pFileObj->FsContext : NULL;
|
---|
| 1443 | NTSTATUS rcNt;
|
---|
| 1444 | unsigned cbOut = 0;
|
---|
| 1445 | int rc = 0;
|
---|
[25465] | 1446 | Log2(("VBoxDrvNtInternalDeviceControl(%p,%p): ioctl=%#x pBuf=%p cbIn=%#x cbOut=%#x pSession=%p\n",
|
---|
| 1447 | pDevExt, pIrp, pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1448 | pIrp->AssociatedIrp.SystemBuffer, pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1449 | pStack->Parameters.DeviceIoControl.OutputBufferLength, pSession));
|
---|
[10263] | 1450 |
|
---|
[10265] | 1451 | /* Verify that it's a buffered CTL. */
|
---|
| 1452 | if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
|
---|
[10263] | 1453 | {
|
---|
[10265] | 1454 | /* Verify the pDevExt in the session. */
|
---|
[38321] | 1455 | if ( pStack->Parameters.DeviceIoControl.IoControlCode != SUPDRV_IDC_REQ_CONNECT
|
---|
| 1456 | ? VALID_PTR(pSession) && pSession->pDevExt == pDevExt
|
---|
| 1457 | : !pSession
|
---|
| 1458 | )
|
---|
[10263] | 1459 | {
|
---|
| 1460 | /* Verify that the size in the request header is correct. */
|
---|
| 1461 | PSUPDRVIDCREQHDR pHdr = (PSUPDRVIDCREQHDR)pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1462 | if ( pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr)
|
---|
| 1463 | && pStack->Parameters.DeviceIoControl.InputBufferLength == pHdr->cb
|
---|
| 1464 | && pStack->Parameters.DeviceIoControl.OutputBufferLength == pHdr->cb)
|
---|
| 1465 | {
|
---|
| 1466 | /*
|
---|
[41067] | 1467 | * Call the generic code.
|
---|
| 1468 | *
|
---|
| 1469 | * Note! Connect and disconnect requires some extra attention
|
---|
[38323] | 1470 | * in order to get the session handling right.
|
---|
[10263] | 1471 | */
|
---|
[38323] | 1472 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_DISCONNECT)
|
---|
| 1473 | pFileObj->FsContext = NULL;
|
---|
| 1474 |
|
---|
[10263] | 1475 | rc = supdrvIDC(pStack->Parameters.DeviceIoControl.IoControlCode, pDevExt, pSession, pHdr);
|
---|
| 1476 | if (!rc)
|
---|
| 1477 | {
|
---|
[38321] | 1478 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_CONNECT)
|
---|
| 1479 | pFileObj->FsContext = ((PSUPDRVIDCREQCONNECT)pHdr)->u.Out.pSession;
|
---|
| 1480 |
|
---|
[10263] | 1481 | rcNt = STATUS_SUCCESS;
|
---|
| 1482 | cbOut = pHdr->cb;
|
---|
| 1483 | }
|
---|
| 1484 | else
|
---|
[38323] | 1485 | {
|
---|
[10263] | 1486 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
[38323] | 1487 | if (pStack->Parameters.DeviceIoControl.IoControlCode == SUPDRV_IDC_REQ_DISCONNECT)
|
---|
| 1488 | pFileObj->FsContext = pSession;
|
---|
| 1489 | }
|
---|
[25465] | 1490 | Log2(("VBoxDrvNtInternalDeviceControl: returns %#x/rc=%#x\n", rcNt, rc));
|
---|
[10263] | 1491 | }
|
---|
| 1492 | else
|
---|
| 1493 | {
|
---|
[25465] | 1494 | Log(("VBoxDrvNtInternalDeviceControl: Mismatching sizes (%#x) - Hdr=%#lx Irp=%#lx/%#lx!\n",
|
---|
| 1495 | pStack->Parameters.DeviceIoControl.IoControlCode,
|
---|
| 1496 | pStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(*pHdr) ? pHdr->cb : 0,
|
---|
| 1497 | pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
| 1498 | pStack->Parameters.DeviceIoControl.OutputBufferLength));
|
---|
[10263] | 1499 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1500 | }
|
---|
| 1501 | }
|
---|
| 1502 | else
|
---|
| 1503 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1504 | }
|
---|
[10265] | 1505 | else
|
---|
| 1506 | {
|
---|
[25465] | 1507 | Log(("VBoxDrvNtInternalDeviceControl: not buffered request (%#x) - not supported\n",
|
---|
| 1508 | pStack->Parameters.DeviceIoControl.IoControlCode));
|
---|
[10265] | 1509 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1510 | }
|
---|
[10263] | 1511 |
|
---|
| 1512 | /* complete the request. */
|
---|
| 1513 | pIrp->IoStatus.Status = rcNt;
|
---|
| 1514 | pIrp->IoStatus.Information = cbOut;
|
---|
| 1515 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1516 | return rcNt;
|
---|
| 1517 | }
|
---|
| 1518 |
|
---|
| 1519 |
|
---|
| 1520 | /**
|
---|
[53002] | 1521 | * Implementation of the read major function for VBoxDrvErrorInfo.
|
---|
| 1522 | *
|
---|
| 1523 | * This is a stub function for the other devices.
|
---|
| 1524 | *
|
---|
| 1525 | * @returns NT status code.
|
---|
| 1526 | * @param pDevObj The device object.
|
---|
| 1527 | * @param pIrp The I/O request packet.
|
---|
| 1528 | */
|
---|
| 1529 | NTSTATUS _stdcall VBoxDrvNtRead(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
| 1530 | {
|
---|
| 1531 | Log(("VBoxDrvNtRead\n"));
|
---|
[62666] | 1532 | RT_NOREF1(pDevObj);
|
---|
[53002] | 1533 |
|
---|
| 1534 | NTSTATUS rcNt;
|
---|
| 1535 | pIrp->IoStatus.Information = 0;
|
---|
| 1536 |
|
---|
| 1537 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1538 | /*
|
---|
| 1539 | * VBoxDrvErrorInfo?
|
---|
| 1540 | */
|
---|
| 1541 | if (pDevObj == g_pDevObjErrorInfo)
|
---|
| 1542 | {
|
---|
| 1543 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
| 1544 | if ( pStack
|
---|
| 1545 | && (pIrp->Flags & IRP_BUFFERED_IO))
|
---|
| 1546 | {
|
---|
| 1547 | /*
|
---|
| 1548 | * Look up the process error information.
|
---|
| 1549 | */
|
---|
| 1550 | HANDLE hCurThreadId = PsGetCurrentThreadId();
|
---|
| 1551 | HANDLE hCurProcessId = PsGetCurrentProcessId();
|
---|
| 1552 | int rc = RTSemMutexRequestNoResume(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 1553 | if (RT_SUCCESS(rc))
|
---|
| 1554 | {
|
---|
| 1555 | PSUPDRVNTERRORINFO pCur;
|
---|
| 1556 | RTListForEach(&g_ErrorInfoHead, pCur, SUPDRVNTERRORINFO, ListEntry)
|
---|
| 1557 | {
|
---|
| 1558 | if ( pCur->hProcessId == hCurProcessId
|
---|
| 1559 | && pCur->hThreadId == hCurThreadId)
|
---|
| 1560 | break;
|
---|
| 1561 | }
|
---|
| 1562 |
|
---|
| 1563 | /*
|
---|
| 1564 | * Did we find error info and is the caller requesting data within it?
|
---|
[57201] | 1565 | * If so, check the destination buffer and copy the data into it.
|
---|
[53002] | 1566 | */
|
---|
| 1567 | if ( pCur
|
---|
| 1568 | && pStack->Parameters.Read.ByteOffset.QuadPart < pCur->cchErrorInfo
|
---|
| 1569 | && pStack->Parameters.Read.ByteOffset.QuadPart >= 0)
|
---|
| 1570 | {
|
---|
| 1571 | PVOID pvDstBuf = pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1572 | if (pvDstBuf)
|
---|
| 1573 | {
|
---|
| 1574 | uint32_t offRead = (uint32_t)pStack->Parameters.Read.ByteOffset.QuadPart;
|
---|
[57201] | 1575 | uint32_t cbToRead = pCur->cchErrorInfo - offRead;
|
---|
| 1576 | if (cbToRead < pStack->Parameters.Read.Length)
|
---|
| 1577 | RT_BZERO((uint8_t *)pvDstBuf + cbToRead, pStack->Parameters.Read.Length - cbToRead);
|
---|
| 1578 | else
|
---|
[53002] | 1579 | cbToRead = pStack->Parameters.Read.Length;
|
---|
| 1580 | memcpy(pvDstBuf, &pCur->szErrorInfo[offRead], cbToRead);
|
---|
| 1581 | pIrp->IoStatus.Information = cbToRead;
|
---|
| 1582 |
|
---|
| 1583 | rcNt = STATUS_SUCCESS;
|
---|
| 1584 | }
|
---|
| 1585 | else
|
---|
| 1586 | rcNt = STATUS_INVALID_ADDRESS;
|
---|
| 1587 | }
|
---|
| 1588 | /*
|
---|
| 1589 | * End of file. Free the info.
|
---|
| 1590 | */
|
---|
| 1591 | else if (pCur)
|
---|
| 1592 | {
|
---|
| 1593 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 1594 | RTMemFree(pCur);
|
---|
| 1595 | rcNt = STATUS_END_OF_FILE;
|
---|
| 1596 | }
|
---|
| 1597 | /*
|
---|
| 1598 | * We found no error info. Return EOF.
|
---|
| 1599 | */
|
---|
| 1600 | else
|
---|
| 1601 | rcNt = STATUS_END_OF_FILE;
|
---|
| 1602 |
|
---|
| 1603 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 1604 | }
|
---|
| 1605 | else
|
---|
| 1606 | rcNt = STATUS_UNSUCCESSFUL;
|
---|
[57201] | 1607 |
|
---|
| 1608 | /* Paranoia: Clear the buffer on failure. */
|
---|
| 1609 | if (!NT_SUCCESS(rcNt))
|
---|
| 1610 | {
|
---|
| 1611 | PVOID pvDstBuf = pIrp->AssociatedIrp.SystemBuffer;
|
---|
| 1612 | if ( pvDstBuf
|
---|
| 1613 | && pStack->Parameters.Read.Length)
|
---|
| 1614 | RT_BZERO(pvDstBuf, pStack->Parameters.Read.Length);
|
---|
| 1615 | }
|
---|
[53002] | 1616 | }
|
---|
| 1617 | else
|
---|
| 1618 | rcNt = STATUS_INVALID_PARAMETER;
|
---|
| 1619 | }
|
---|
| 1620 | else
|
---|
| 1621 | #endif /* VBOX_WITH_HARDENING */
|
---|
| 1622 | {
|
---|
| 1623 | /*
|
---|
| 1624 | * Stub.
|
---|
| 1625 | */
|
---|
| 1626 | rcNt = STATUS_NOT_SUPPORTED;
|
---|
| 1627 | }
|
---|
| 1628 |
|
---|
| 1629 | /*
|
---|
| 1630 | * Complete the request.
|
---|
| 1631 | */
|
---|
| 1632 | pIrp->IoStatus.Status = rcNt;
|
---|
| 1633 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1634 | return rcNt;
|
---|
| 1635 | }
|
---|
| 1636 |
|
---|
| 1637 |
|
---|
| 1638 | /**
|
---|
[1] | 1639 | * Stub function for functions we don't implemented.
|
---|
| 1640 | *
|
---|
| 1641 | * @returns STATUS_NOT_SUPPORTED
|
---|
| 1642 | * @param pDevObj Device object.
|
---|
| 1643 | * @param pIrp IRP.
|
---|
| 1644 | */
|
---|
[4800] | 1645 | NTSTATUS _stdcall VBoxDrvNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
[1] | 1646 | {
|
---|
[25465] | 1647 | Log(("VBoxDrvNtNotSupportedStub\n"));
|
---|
[44188] | 1648 | NOREF(pDevObj);
|
---|
[1] | 1649 |
|
---|
| 1650 | pIrp->IoStatus.Information = 0;
|
---|
| 1651 | pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
|
---|
| 1652 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
| 1653 |
|
---|
| 1654 | return STATUS_NOT_SUPPORTED;
|
---|
| 1655 | }
|
---|
| 1656 |
|
---|
| 1657 |
|
---|
| 1658 | /**
|
---|
[13495] | 1659 | * ExRegisterCallback handler for power events
|
---|
| 1660 | *
|
---|
| 1661 | * @param pCallbackContext User supplied parameter (pDevObj)
|
---|
[62666] | 1662 | * @param pvArgument1 First argument
|
---|
| 1663 | * @param pvArgument2 Second argument
|
---|
[13495] | 1664 | */
|
---|
[62666] | 1665 | VOID _stdcall VBoxPowerDispatchCallback(PVOID pCallbackContext, PVOID pvArgument1, PVOID pvArgument2)
|
---|
[13495] | 1666 | {
|
---|
[62666] | 1667 | /*PDEVICE_OBJECT pDevObj = (PDEVICE_OBJECT)pCallbackContext;*/ RT_NOREF1(pCallbackContext);
|
---|
| 1668 | Log(("VBoxPowerDispatchCallback: %x %x\n", pvArgument1, pvArgument2));
|
---|
[13495] | 1669 |
|
---|
| 1670 | /* Power change imminent? */
|
---|
[62666] | 1671 | if ((uintptr_t)pvArgument1 == PO_CB_SYSTEM_STATE_LOCK)
|
---|
[13495] | 1672 | {
|
---|
[62666] | 1673 | if (pvArgument2 == NULL)
|
---|
[25465] | 1674 | Log(("VBoxPowerDispatchCallback: about to go into suspend mode!\n"));
|
---|
[13495] | 1675 | else
|
---|
[25465] | 1676 | Log(("VBoxPowerDispatchCallback: resumed!\n"));
|
---|
[13496] | 1677 |
|
---|
| 1678 | /* Inform any clients that have registered themselves with IPRT. */
|
---|
[62666] | 1679 | RTPowerSignalEvent(pvArgument2 == NULL ? RTPOWEREVENT_SUSPEND : RTPOWEREVENT_RESUME);
|
---|
[13495] | 1680 | }
|
---|
| 1681 | }
|
---|
| 1682 |
|
---|
| 1683 |
|
---|
| 1684 | /**
|
---|
[51770] | 1685 | * Called to clean up the session structure before it's freed.
|
---|
| 1686 | *
|
---|
| 1687 | * @param pDevExt The device globals.
|
---|
| 1688 | * @param pSession The session that's being cleaned up.
|
---|
| 1689 | */
|
---|
| 1690 | void VBOXCALL supdrvOSCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
|
---|
| 1691 | {
|
---|
| 1692 | #ifdef VBOX_WITH_HARDENING
|
---|
| 1693 | if (pSession->pNtProtect)
|
---|
| 1694 | {
|
---|
| 1695 | supdrvNtProtectRelease(pSession->pNtProtect);
|
---|
| 1696 | pSession->pNtProtect = NULL;
|
---|
| 1697 | }
|
---|
[62667] | 1698 | RT_NOREF1(pDevExt);
|
---|
[62666] | 1699 | #else
|
---|
| 1700 | RT_NOREF2(pDevExt, pSession);
|
---|
[51770] | 1701 | #endif
|
---|
| 1702 | }
|
---|
| 1703 |
|
---|
| 1704 |
|
---|
| 1705 | void VBOXCALL supdrvOSSessionHashTabInserted(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
|
---|
| 1706 | {
|
---|
| 1707 | NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
|
---|
| 1708 | }
|
---|
| 1709 |
|
---|
| 1710 |
|
---|
| 1711 | void VBOXCALL supdrvOSSessionHashTabRemoved(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser)
|
---|
| 1712 | {
|
---|
| 1713 | NOREF(pDevExt); NOREF(pSession); NOREF(pvUser);
|
---|
| 1714 | }
|
---|
| 1715 |
|
---|
| 1716 |
|
---|
[64281] | 1717 | size_t VBOXCALL supdrvOSGipGetGroupTableSize(PSUPDRVDEVEXT pDevExt)
|
---|
[64255] | 1718 | {
|
---|
| 1719 | NOREF(pDevExt);
|
---|
[64281] | 1720 | uint32_t cMaxCpus = RTMpGetCount();
|
---|
| 1721 | uint32_t cGroups = RTMpGetMaxCpuGroupCount();
|
---|
[64255] | 1722 |
|
---|
[64281] | 1723 | return cGroups * RT_OFFSETOF(SUPGIPCPUGROUP, aiCpuSetIdxs)
|
---|
| 1724 | + RT_SIZEOFMEMB(SUPGIPCPUGROUP, aiCpuSetIdxs[0]) * cMaxCpus;
|
---|
| 1725 | }
|
---|
| 1726 |
|
---|
| 1727 |
|
---|
| 1728 | int VBOXCALL supdrvOSInitGipGroupTable(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, size_t cbGipCpuGroups)
|
---|
| 1729 | {
|
---|
| 1730 | Assert(cbGipCpuGroups > 0); NOREF(cbGipCpuGroups); NOREF(pDevExt);
|
---|
| 1731 |
|
---|
| 1732 | unsigned const cGroups = RTMpGetMaxCpuGroupCount();
|
---|
| 1733 | AssertReturn(cGroups > 0 && cGroups < RT_ELEMENTS(pGip->aoffCpuGroup), VERR_INTERNAL_ERROR_2);
|
---|
| 1734 | pGip->cPossibleCpuGroups = cGroups;
|
---|
| 1735 |
|
---|
| 1736 | PSUPGIPCPUGROUP pGroup = (PSUPGIPCPUGROUP)&pGip->aCPUs[pGip->cCpus];
|
---|
| 1737 | for (uint32_t idxGroup = 0; idxGroup < cGroups; idxGroup++)
|
---|
[64255] | 1738 | {
|
---|
[64281] | 1739 | uint32_t cActive = 0;
|
---|
| 1740 | uint32_t cMax = RTMpGetCpuGroupCounts(idxGroup, &cActive);
|
---|
| 1741 | uint32_t cbNeeded = RT_OFFSETOF(SUPGIPCPUGROUP, aiCpuSetIdxs[cMax]);
|
---|
| 1742 | AssertReturn(cbNeeded <= cbGipCpuGroups, VERR_INTERNAL_ERROR_3);
|
---|
| 1743 | AssertReturn(cActive <= cMax, VERR_INTERNAL_ERROR_4);
|
---|
[64255] | 1744 |
|
---|
[64281] | 1745 | pGip->aoffCpuGroup[idxGroup] = (uint16_t)((uintptr_t)pGroup - (uintptr_t)pGip);
|
---|
| 1746 | pGroup->cMembers = cActive;
|
---|
| 1747 | pGroup->cMaxMembers = cMax;
|
---|
| 1748 | for (uint32_t idxMember = 0; idxMember < cMax; idxMember++)
|
---|
[64255] | 1749 | {
|
---|
[64281] | 1750 | pGroup->aiCpuSetIdxs[idxMember] = RTMpSetIndexFromCpuGroupMember(idxGroup, idxMember);
|
---|
| 1751 | Assert((unsigned)pGroup->aiCpuSetIdxs[idxMember] < pGip->cPossibleCpus);
|
---|
[64255] | 1752 | }
|
---|
[64281] | 1753 |
|
---|
| 1754 | /* advance. */
|
---|
| 1755 | cbGipCpuGroups -= cbNeeded;
|
---|
| 1756 | pGroup = (PSUPGIPCPUGROUP)&pGroup->aiCpuSetIdxs[cMax];
|
---|
[64255] | 1757 | }
|
---|
| 1758 |
|
---|
[64281] | 1759 | return VINF_SUCCESS;
|
---|
[64255] | 1760 | }
|
---|
| 1761 |
|
---|
| 1762 |
|
---|
[64281] | 1763 | void VBOXCALL supdrvOSGipInitGroupBitsForCpu(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pGipCpu)
|
---|
[64255] | 1764 | {
|
---|
| 1765 | NOREF(pDevExt);
|
---|
| 1766 |
|
---|
| 1767 | /*
|
---|
[64281] | 1768 | * Translate the CPU index into a group and member.
|
---|
[64255] | 1769 | */
|
---|
[64281] | 1770 | PROCESSOR_NUMBER ProcNum = { 0, pGipCpu->iCpuSet, 0 };
|
---|
[64255] | 1771 | if (g_pfnKeGetProcessorNumberFromIndex)
|
---|
| 1772 | {
|
---|
[64281] | 1773 | NTSTATUS rcNt = g_pfnKeGetProcessorNumberFromIndex(pGipCpu->iCpuSet, &ProcNum);
|
---|
[64255] | 1774 | if (NT_SUCCESS(rcNt))
|
---|
[64281] | 1775 | Assert(ProcNum.Group < g_pfnKeQueryMaximumGroupCount());
|
---|
| 1776 | else
|
---|
[64255] | 1777 | {
|
---|
[64281] | 1778 | AssertFailed();
|
---|
| 1779 | ProcNum.Group = 0;
|
---|
| 1780 | ProcNum.Number = pGipCpu->iCpuSet;
|
---|
[64255] | 1781 | }
|
---|
| 1782 | }
|
---|
[64281] | 1783 | pGipCpu->iCpuGroup = ProcNum.Group;
|
---|
| 1784 | pGipCpu->iCpuGroupMember = ProcNum.Number;
|
---|
[64255] | 1785 |
|
---|
[64281] | 1786 | /*
|
---|
| 1787 | * Update the group info. Just do this wholesale for now (doesn't scale well).
|
---|
| 1788 | */
|
---|
| 1789 | for (uint32_t idxGroup = 0; idxGroup < pGip->cPossibleCpuGroups; idxGroup++)
|
---|
| 1790 | if (pGip->aoffCpuGroup[idxGroup] != UINT16_MAX)
|
---|
| 1791 | {
|
---|
| 1792 | PSUPGIPCPUGROUP pGroup = (PSUPGIPCPUGROUP)((uintptr_t)pGip + pGip->aoffCpuGroup[idxGroup]);
|
---|
| 1793 |
|
---|
| 1794 | uint32_t cActive = 0;
|
---|
| 1795 | uint32_t cMax = RTMpGetCpuGroupCounts(idxGroup, &cActive);
|
---|
| 1796 | AssertStmt(cMax == pGroup->cMaxMembers, cMax = pGroup->cMaxMembers);
|
---|
| 1797 | AssertStmt(cActive <= cMax, cActive = cMax);
|
---|
| 1798 | if (pGroup->cMembers != cActive)
|
---|
| 1799 | pGroup->cMembers = cActive;
|
---|
| 1800 |
|
---|
| 1801 | for (uint32_t idxMember = 0; idxMember < cMax; idxMember++)
|
---|
| 1802 | {
|
---|
| 1803 | int idxCpuSet = RTMpSetIndexFromCpuGroupMember(idxGroup, idxMember);
|
---|
| 1804 | AssertMsg((unsigned)idxCpuSet < pGip->cPossibleCpus,
|
---|
| 1805 | ("%d vs %d for %u.%u\n", idxCpuSet, pGip->cPossibleCpus, idxGroup, idxMember));
|
---|
| 1806 |
|
---|
| 1807 | if (pGroup->aiCpuSetIdxs[idxMember] != idxCpuSet)
|
---|
| 1808 | pGroup->aiCpuSetIdxs[idxMember] = idxCpuSet;
|
---|
| 1809 | }
|
---|
| 1810 | }
|
---|
[64255] | 1811 | }
|
---|
| 1812 |
|
---|
| 1813 |
|
---|
[51770] | 1814 | /**
|
---|
[1] | 1815 | * Initializes any OS specific object creator fields.
|
---|
| 1816 | */
|
---|
| 1817 | void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
|
---|
| 1818 | {
|
---|
| 1819 | NOREF(pObj);
|
---|
| 1820 | NOREF(pSession);
|
---|
| 1821 | }
|
---|
| 1822 |
|
---|
| 1823 |
|
---|
| 1824 | /**
|
---|
| 1825 | * Checks if the session can access the object.
|
---|
| 1826 | *
|
---|
| 1827 | * @returns true if a decision has been made.
|
---|
| 1828 | * @returns false if the default access policy should be applied.
|
---|
| 1829 | *
|
---|
| 1830 | * @param pObj The object in question.
|
---|
| 1831 | * @param pSession The session wanting to access the object.
|
---|
| 1832 | * @param pszObjName The object name, can be NULL.
|
---|
| 1833 | * @param prc Where to store the result when returning true.
|
---|
| 1834 | */
|
---|
| 1835 | bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
|
---|
| 1836 | {
|
---|
| 1837 | NOREF(pObj);
|
---|
| 1838 | NOREF(pSession);
|
---|
| 1839 | NOREF(pszObjName);
|
---|
| 1840 | NOREF(prc);
|
---|
| 1841 | return false;
|
---|
| 1842 | }
|
---|
| 1843 |
|
---|
[9587] | 1844 |
|
---|
[7206] | 1845 | /**
|
---|
[1850] | 1846 | * Force async tsc mode (stub).
|
---|
| 1847 | */
|
---|
[8789] | 1848 | bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
|
---|
[1850] | 1849 | {
|
---|
[62666] | 1850 | RT_NOREF1(pDevExt);
|
---|
[64255] | 1851 | return g_Options.fOptForceAsyncTsc != 0;
|
---|
[1850] | 1852 | }
|
---|
| 1853 |
|
---|
| 1854 |
|
---|
[53396] | 1855 | /**
|
---|
[54581] | 1856 | * Whether the host takes CPUs offline during a suspend/resume operation.
|
---|
| 1857 | */
|
---|
| 1858 | bool VBOXCALL supdrvOSAreCpusOfflinedOnSuspend(void)
|
---|
| 1859 | {
|
---|
| 1860 | return false;
|
---|
| 1861 | }
|
---|
| 1862 |
|
---|
| 1863 |
|
---|
| 1864 | /**
|
---|
[53396] | 1865 | * Whether the hardware TSC has been synchronized by the OS.
|
---|
| 1866 | */
|
---|
| 1867 | bool VBOXCALL supdrvOSAreTscDeltasInSync(void)
|
---|
| 1868 | {
|
---|
[54412] | 1869 | /* If IPRT didn't find KeIpiGenericCall we pretend windows(, the firmware,
|
---|
| 1870 | or whoever) always configures TSCs perfectly. */
|
---|
| 1871 | return !RTMpOnPairIsConcurrentExecSupported();
|
---|
[53396] | 1872 | }
|
---|
| 1873 |
|
---|
| 1874 |
|
---|
[25262] | 1875 | #define MY_SystemLoadGdiDriverInSystemSpaceInformation 54
|
---|
| 1876 | #define MY_SystemUnloadGdiDriverInformation 27
|
---|
| 1877 |
|
---|
| 1878 | typedef struct MYSYSTEMGDIDRIVERINFO
|
---|
| 1879 | {
|
---|
| 1880 | UNICODE_STRING Name; /**< In: image file name. */
|
---|
| 1881 | PVOID ImageAddress; /**< Out: the load address. */
|
---|
| 1882 | PVOID SectionPointer; /**< Out: section object. */
|
---|
| 1883 | PVOID EntryPointer; /**< Out: entry point address. */
|
---|
| 1884 | PVOID ExportSectionPointer; /**< Out: export directory/section. */
|
---|
| 1885 | ULONG ImageLength; /**< Out: SizeOfImage. */
|
---|
| 1886 | } MYSYSTEMGDIDRIVERINFO;
|
---|
| 1887 |
|
---|
| 1888 | extern "C" __declspec(dllimport) NTSTATUS NTAPI ZwSetSystemInformation(ULONG, PVOID, ULONG);
|
---|
| 1889 |
|
---|
[25258] | 1890 | int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
|
---|
| 1891 | {
|
---|
[25308] | 1892 | pImage->pvNtSectionObj = NULL;
|
---|
| 1893 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 1894 |
|
---|
[25300] | 1895 | #ifdef VBOX_WITHOUT_NATIVE_R0_LOADER
|
---|
[25336] | 1896 | # ifndef RT_ARCH_X86
|
---|
| 1897 | # error "VBOX_WITHOUT_NATIVE_R0_LOADER is only safe on x86."
|
---|
| 1898 | # endif
|
---|
[25300] | 1899 | NOREF(pDevExt); NOREF(pszFilename); NOREF(pImage);
|
---|
| 1900 | return VERR_NOT_SUPPORTED;
|
---|
[25262] | 1901 |
|
---|
[25300] | 1902 | #else
|
---|
| 1903 | /*
|
---|
| 1904 | * Convert the filename from DOS UTF-8 to NT UTF-16.
|
---|
| 1905 | */
|
---|
| 1906 | size_t cwcFilename;
|
---|
| 1907 | int rc = RTStrCalcUtf16LenEx(pszFilename, RTSTR_MAX, &cwcFilename);
|
---|
| 1908 | if (RT_FAILURE(rc))
|
---|
| 1909 | return rc;
|
---|
| 1910 |
|
---|
| 1911 | PRTUTF16 pwcsFilename = (PRTUTF16)RTMemTmpAlloc((4 + cwcFilename + 1) * sizeof(RTUTF16));
|
---|
| 1912 | if (!pwcsFilename)
|
---|
| 1913 | return VERR_NO_TMP_MEMORY;
|
---|
| 1914 |
|
---|
| 1915 | pwcsFilename[0] = '\\';
|
---|
| 1916 | pwcsFilename[1] = '?';
|
---|
| 1917 | pwcsFilename[2] = '?';
|
---|
| 1918 | pwcsFilename[3] = '\\';
|
---|
| 1919 | PRTUTF16 pwcsTmp = &pwcsFilename[4];
|
---|
| 1920 | rc = RTStrToUtf16Ex(pszFilename, RTSTR_MAX, &pwcsTmp, cwcFilename + 1, NULL);
|
---|
| 1921 | if (RT_SUCCESS(rc))
|
---|
[25262] | 1922 | {
|
---|
[25300] | 1923 | /*
|
---|
| 1924 | * Try load it.
|
---|
| 1925 | */
|
---|
| 1926 | MYSYSTEMGDIDRIVERINFO Info;
|
---|
| 1927 | RtlInitUnicodeString(&Info.Name, pwcsFilename);
|
---|
| 1928 | Info.ImageAddress = NULL;
|
---|
| 1929 | Info.SectionPointer = NULL;
|
---|
| 1930 | Info.EntryPointer = NULL;
|
---|
| 1931 | Info.ExportSectionPointer = NULL;
|
---|
| 1932 | Info.ImageLength = 0;
|
---|
[25262] | 1933 |
|
---|
[25300] | 1934 | NTSTATUS rcNt = ZwSetSystemInformation(MY_SystemLoadGdiDriverInSystemSpaceInformation, &Info, sizeof(Info));
|
---|
| 1935 | if (NT_SUCCESS(rcNt))
|
---|
| 1936 | {
|
---|
| 1937 | pImage->pvImage = Info.ImageAddress;
|
---|
| 1938 | pImage->pvNtSectionObj = Info.SectionPointer;
|
---|
| 1939 | Log(("ImageAddress=%p SectionPointer=%p ImageLength=%#x cbImageBits=%#x rcNt=%#x '%ls'\n",
|
---|
| 1940 | Info.ImageAddress, Info.SectionPointer, Info.ImageLength, pImage->cbImageBits, rcNt, Info.Name.Buffer));
|
---|
| 1941 | # ifdef DEBUG_bird
|
---|
| 1942 | SUPR0Printf("ImageAddress=%p SectionPointer=%p ImageLength=%#x cbImageBits=%#x rcNt=%#x '%ws'\n",
|
---|
| 1943 | Info.ImageAddress, Info.SectionPointer, Info.ImageLength, pImage->cbImageBits, rcNt, Info.Name.Buffer);
|
---|
| 1944 | # endif
|
---|
| 1945 | if (pImage->cbImageBits == Info.ImageLength)
|
---|
| 1946 | {
|
---|
[25308] | 1947 | /*
|
---|
| 1948 | * Lock down the entire image, just to be on the safe side.
|
---|
| 1949 | */
|
---|
| 1950 | rc = RTR0MemObjLockKernel(&pImage->hMemLock, pImage->pvImage, pImage->cbImageBits, RTMEM_PROT_READ);
|
---|
| 1951 | if (RT_FAILURE(rc))
|
---|
| 1952 | {
|
---|
| 1953 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 1954 | supdrvOSLdrUnload(pDevExt, pImage);
|
---|
| 1955 | }
|
---|
[25300] | 1956 | }
|
---|
| 1957 | else
|
---|
| 1958 | {
|
---|
| 1959 | supdrvOSLdrUnload(pDevExt, pImage);
|
---|
| 1960 | rc = VERR_LDR_MISMATCH_NATIVE;
|
---|
| 1961 | }
|
---|
| 1962 | }
|
---|
| 1963 | else
|
---|
| 1964 | {
|
---|
[28659] | 1965 | Log(("rcNt=%#x '%ls'\n", rcNt, pwcsFilename));
|
---|
[28661] | 1966 | SUPR0Printf("VBoxDrv: rcNt=%x '%ws'\n", rcNt, pwcsFilename);
|
---|
[25300] | 1967 | switch (rcNt)
|
---|
| 1968 | {
|
---|
| 1969 | case /* 0xc0000003 */ STATUS_INVALID_INFO_CLASS:
|
---|
[25336] | 1970 | # ifdef RT_ARCH_AMD64
|
---|
| 1971 | /* Unwind will crash and BSOD, so no fallback here! */
|
---|
| 1972 | rc = VERR_NOT_IMPLEMENTED;
|
---|
| 1973 | # else
|
---|
[25300] | 1974 | /*
|
---|
[25336] | 1975 | * Use the old way of loading the modules.
|
---|
[25300] | 1976 | *
|
---|
[25336] | 1977 | * Note! We do *NOT* try class 26 because it will probably
|
---|
| 1978 | * not work correctly on terminal servers and such.
|
---|
[25300] | 1979 | */
|
---|
| 1980 | rc = VERR_NOT_SUPPORTED;
|
---|
| 1981 | # endif
|
---|
| 1982 | break;
|
---|
| 1983 | case /* 0xc0000034 */ STATUS_OBJECT_NAME_NOT_FOUND:
|
---|
| 1984 | rc = VERR_MODULE_NOT_FOUND;
|
---|
| 1985 | break;
|
---|
| 1986 | case /* 0xC0000263 */ STATUS_DRIVER_ENTRYPOINT_NOT_FOUND:
|
---|
| 1987 | rc = VERR_LDR_IMPORTED_SYMBOL_NOT_FOUND;
|
---|
| 1988 | break;
|
---|
[51770] | 1989 | case /* 0xC0000428 */ STATUS_INVALID_IMAGE_HASH:
|
---|
[25360] | 1990 | rc = VERR_LDR_IMAGE_HASH;
|
---|
| 1991 | break;
|
---|
[51770] | 1992 | case /* 0xC000010E */ STATUS_IMAGE_ALREADY_LOADED:
|
---|
[41774] | 1993 | Log(("WARNING: see @bugref{4853} for cause of this failure on Windows 7 x64\n"));
|
---|
[28661] | 1994 | rc = VERR_ALREADY_LOADED;
|
---|
| 1995 | break;
|
---|
[25300] | 1996 | default:
|
---|
| 1997 | rc = VERR_LDR_GENERAL_FAILURE;
|
---|
| 1998 | break;
|
---|
| 1999 | }
|
---|
[25262] | 2000 |
|
---|
[25300] | 2001 | pImage->pvNtSectionObj = NULL;
|
---|
| 2002 | }
|
---|
[25262] | 2003 | }
|
---|
| 2004 |
|
---|
[25300] | 2005 | RTMemTmpFree(pwcsFilename);
|
---|
| 2006 | NOREF(pDevExt);
|
---|
| 2007 | return rc;
|
---|
[25278] | 2008 | #endif
|
---|
[25258] | 2009 | }
|
---|
| 2010 |
|
---|
| 2011 |
|
---|
[58872] | 2012 | void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
|
---|
[41067] | 2013 | {
|
---|
[58872] | 2014 | NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
|
---|
[41067] | 2015 | }
|
---|
| 2016 |
|
---|
[58875] | 2017 | void VBOXCALL supdrvOSLdrNotifyUnloaded(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2018 | {
|
---|
| 2019 | NOREF(pDevExt); NOREF(pImage);
|
---|
| 2020 | }
|
---|
[41067] | 2021 |
|
---|
[25258] | 2022 | int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, const uint8_t *pbImageBits)
|
---|
| 2023 | {
|
---|
| 2024 | NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
|
---|
[25262] | 2025 | return VINF_SUCCESS;
|
---|
[25258] | 2026 | }
|
---|
| 2027 |
|
---|
| 2028 |
|
---|
[25331] | 2029 | /**
|
---|
[57378] | 2030 | * memcmp + errormsg + log.
|
---|
[25336] | 2031 | *
|
---|
[25331] | 2032 | * @returns Same as memcmp.
|
---|
| 2033 | * @param pImage The image.
|
---|
| 2034 | * @param pbImageBits The image bits ring-3 uploads.
|
---|
| 2035 | * @param uRva The RVA to start comparing at.
|
---|
| 2036 | * @param cb The number of bytes to compare.
|
---|
[57378] | 2037 | * @param pReq The load request.
|
---|
[25331] | 2038 | */
|
---|
[57378] | 2039 | static int supdrvNtCompare(PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, uint32_t uRva, uint32_t cb, PSUPLDRLOAD pReq)
|
---|
[25258] | 2040 | {
|
---|
[25331] | 2041 | int iDiff = memcmp((uint8_t const *)pImage->pvImage + uRva, pbImageBits + uRva, cb);
|
---|
| 2042 | if (iDiff)
|
---|
[25262] | 2043 | {
|
---|
[25331] | 2044 | uint32_t cbLeft = cb;
|
---|
[25300] | 2045 | const uint8_t *pbNativeBits = (const uint8_t *)pImage->pvImage;
|
---|
[25331] | 2046 | for (size_t off = uRva; cbLeft > 0; off++, cbLeft--)
|
---|
[25300] | 2047 | if (pbNativeBits[off] != pbImageBits[off])
|
---|
| 2048 | {
|
---|
[57378] | 2049 | /* Note! We need to copy image bits into a temporary stack buffer here as we'd
|
---|
| 2050 | otherwise risk overwriting them while formatting the error message. */
|
---|
| 2051 | uint8_t abBytes[64];
|
---|
| 2052 | memcpy(abBytes, &pbImageBits[off], RT_MIN(64, cbLeft));
|
---|
| 2053 | supdrvLdrLoadError(VERR_LDR_MISMATCH_NATIVE, pReq,
|
---|
[57400] | 2054 | "Mismatch at %#x (%p) of %s loaded at %p:\n"
|
---|
[57378] | 2055 | "ntld: %.*Rhxs\n"
|
---|
| 2056 | "iprt: %.*Rhxs",
|
---|
[57400] | 2057 | off, &pbNativeBits[off], pImage->szName, pImage->pvImage,
|
---|
[57378] | 2058 | RT_MIN(64, cbLeft), &pbNativeBits[off],
|
---|
| 2059 | RT_MIN(64, cbLeft), &abBytes[0]);
|
---|
| 2060 | SUPR0Printf("VBoxDrv: %s", pReq->u.Out.szError);
|
---|
[25331] | 2061 | break;
|
---|
[25300] | 2062 | }
|
---|
[25262] | 2063 | }
|
---|
[25331] | 2064 | return iDiff;
|
---|
| 2065 | }
|
---|
| 2066 |
|
---|
[57378] | 2067 |
|
---|
[37249] | 2068 | int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
|
---|
[25331] | 2069 | {
|
---|
[57378] | 2070 | NOREF(pDevExt);
|
---|
[25331] | 2071 | if (pImage->pvNtSectionObj)
|
---|
| 2072 | {
|
---|
| 2073 | /*
|
---|
| 2074 | * Usually, the entire image matches exactly.
|
---|
| 2075 | */
|
---|
| 2076 | if (!memcmp(pImage->pvImage, pbImageBits, pImage->cbImageBits))
|
---|
| 2077 | return VINF_SUCCESS;
|
---|
| 2078 |
|
---|
| 2079 | /*
|
---|
[57456] | 2080 | * On Windows 10 the ImageBase member of the optional header is sometimes
|
---|
| 2081 | * updated with the actual load address and sometimes not. Try compare
|
---|
[25331] | 2082 | *
|
---|
[57456] | 2083 | */
|
---|
| 2084 | uint32_t const offNtHdrs = *(uint16_t *)pbImageBits == IMAGE_DOS_SIGNATURE
|
---|
| 2085 | ? ((IMAGE_DOS_HEADER const *)pbImageBits)->e_lfanew
|
---|
| 2086 | : 0;
|
---|
| 2087 | AssertLogRelReturn(offNtHdrs + sizeof(IMAGE_NT_HEADERS) < pImage->cbImageBits, VERR_INTERNAL_ERROR_5);
|
---|
| 2088 | IMAGE_NT_HEADERS const *pNtHdrsIprt = (IMAGE_NT_HEADERS const *)(pbImageBits + offNtHdrs);
|
---|
| 2089 | IMAGE_NT_HEADERS const *pNtHdrsNtLd = (IMAGE_NT_HEADERS const *)((uintptr_t)pImage->pvImage + offNtHdrs);
|
---|
| 2090 |
|
---|
| 2091 | uint32_t const offImageBase = offNtHdrs + RT_OFFSETOF(IMAGE_NT_HEADERS, OptionalHeader.ImageBase);
|
---|
| 2092 | uint32_t const cbImageBase = RT_SIZEOFMEMB(IMAGE_NT_HEADERS, OptionalHeader.ImageBase);
|
---|
| 2093 | if ( pNtHdrsNtLd->OptionalHeader.ImageBase != pNtHdrsIprt->OptionalHeader.ImageBase
|
---|
| 2094 | && ( pNtHdrsNtLd->OptionalHeader.ImageBase == (uintptr_t)pImage->pvImage
|
---|
| 2095 | || pNtHdrsIprt->OptionalHeader.ImageBase == (uintptr_t)pImage->pvImage)
|
---|
| 2096 | && pNtHdrsIprt->Signature == IMAGE_NT_SIGNATURE
|
---|
| 2097 | && pNtHdrsIprt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR_MAGIC
|
---|
| 2098 | && !memcmp(pImage->pvImage, pbImageBits, offImageBase)
|
---|
| 2099 | && !memcmp((uint8_t const *)pImage->pvImage + offImageBase + cbImageBase,
|
---|
| 2100 | pbImageBits + offImageBase + cbImageBase,
|
---|
| 2101 | pImage->cbImageBits - offImageBase - cbImageBase))
|
---|
| 2102 | return VINF_SUCCESS;
|
---|
| 2103 |
|
---|
| 2104 | /*
|
---|
| 2105 | * On Windows Server 2003 (sp2 x86) both import thunk tables are fixed
|
---|
| 2106 | * up and we typically get a mismatch in the INIT section.
|
---|
| 2107 | *
|
---|
[25331] | 2108 | * So, lets see if everything matches when excluding the
|
---|
[57456] | 2109 | * OriginalFirstThunk tables and (maybe) the ImageBase member.
|
---|
| 2110 | * For simplicity the max number of exclusion regions is set to 16.
|
---|
[25331] | 2111 | */
|
---|
[57456] | 2112 | if ( pNtHdrsIprt->Signature == IMAGE_NT_SIGNATURE
|
---|
| 2113 | && pNtHdrsIprt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR_MAGIC
|
---|
| 2114 | && pNtHdrsIprt->OptionalHeader.NumberOfRvaAndSizes > IMAGE_DIRECTORY_ENTRY_IMPORT
|
---|
| 2115 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size >= sizeof(IMAGE_IMPORT_DESCRIPTOR)
|
---|
| 2116 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2117 | && pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress < pImage->cbImageBits
|
---|
[25331] | 2118 | )
|
---|
| 2119 | {
|
---|
| 2120 | struct MyRegion
|
---|
| 2121 | {
|
---|
| 2122 | uint32_t uRva;
|
---|
| 2123 | uint32_t cb;
|
---|
| 2124 | } aExcludeRgns[16];
|
---|
| 2125 | unsigned cExcludeRgns = 0;
|
---|
[57456] | 2126 |
|
---|
| 2127 | /* ImageBase: */
|
---|
| 2128 | if ( pNtHdrsNtLd->OptionalHeader.ImageBase != pNtHdrsIprt->OptionalHeader.ImageBase
|
---|
| 2129 | && ( pNtHdrsNtLd->OptionalHeader.ImageBase == (uintptr_t)pImage->pvImage
|
---|
| 2130 | || pNtHdrsIprt->OptionalHeader.ImageBase == (uintptr_t)pImage->pvImage) )
|
---|
| 2131 | {
|
---|
| 2132 | aExcludeRgns[cExcludeRgns].uRva = offImageBase;
|
---|
| 2133 | aExcludeRgns[cExcludeRgns].cb = cbImageBase;
|
---|
| 2134 | cExcludeRgns++;
|
---|
| 2135 | }
|
---|
| 2136 |
|
---|
| 2137 | /* Imports: */
|
---|
| 2138 | uint32_t cImpsLeft = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size
|
---|
[25331] | 2139 | / sizeof(IMAGE_IMPORT_DESCRIPTOR);
|
---|
[57456] | 2140 | uint32_t offImps = pNtHdrsIprt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
|
---|
| 2141 | AssertLogRelReturn(offImps + cImpsLeft * sizeof(IMAGE_IMPORT_DESCRIPTOR) <= pImage->cbImageBits, VERR_INTERNAL_ERROR_3);
|
---|
| 2142 | IMAGE_IMPORT_DESCRIPTOR const *pImp = (IMAGE_IMPORT_DESCRIPTOR const *)(pbImageBits + offImps);
|
---|
[25331] | 2143 | while ( cImpsLeft-- > 0
|
---|
| 2144 | && cExcludeRgns < RT_ELEMENTS(aExcludeRgns))
|
---|
| 2145 | {
|
---|
| 2146 | uint32_t uRvaThunk = pImp->OriginalFirstThunk;
|
---|
| 2147 | if ( uRvaThunk > sizeof(IMAGE_NT_HEADERS)
|
---|
| 2148 | && uRvaThunk <= pImage->cbImageBits - sizeof(IMAGE_THUNK_DATA)
|
---|
| 2149 | && uRvaThunk != pImp->FirstThunk)
|
---|
| 2150 | {
|
---|
| 2151 | /* Find the size of the thunk table. */
|
---|
| 2152 | IMAGE_THUNK_DATA const *paThunk = (IMAGE_THUNK_DATA const *)(pbImageBits + uRvaThunk);
|
---|
| 2153 | uint32_t cMaxThunks = (pImage->cbImageBits - uRvaThunk) / sizeof(IMAGE_THUNK_DATA);
|
---|
| 2154 | uint32_t cThunks = 0;
|
---|
| 2155 | while (cThunks < cMaxThunks && paThunk[cThunks].u1.Function != 0)
|
---|
| 2156 | cThunks++;
|
---|
| 2157 |
|
---|
| 2158 | /* Ordered table insert. */
|
---|
| 2159 | unsigned i = 0;
|
---|
| 2160 | for (; i < cExcludeRgns; i++)
|
---|
| 2161 | if (uRvaThunk < aExcludeRgns[i].uRva)
|
---|
| 2162 | break;
|
---|
| 2163 | if (i != cExcludeRgns)
|
---|
| 2164 | memmove(&aExcludeRgns[i + 1], &aExcludeRgns[i], (cExcludeRgns - i) * sizeof(aExcludeRgns[0]));
|
---|
| 2165 | aExcludeRgns[i].uRva = uRvaThunk;
|
---|
| 2166 | aExcludeRgns[i].cb = cThunks * sizeof(IMAGE_THUNK_DATA);
|
---|
| 2167 | cExcludeRgns++;
|
---|
| 2168 | }
|
---|
| 2169 |
|
---|
| 2170 | /* advance */
|
---|
| 2171 | pImp++;
|
---|
| 2172 | }
|
---|
| 2173 |
|
---|
| 2174 | /*
|
---|
| 2175 | * Ok, do the comparison.
|
---|
| 2176 | */
|
---|
| 2177 | int iDiff = 0;
|
---|
| 2178 | uint32_t uRvaNext = 0;
|
---|
| 2179 | for (unsigned i = 0; !iDiff && i < cExcludeRgns; i++)
|
---|
| 2180 | {
|
---|
| 2181 | if (uRvaNext < aExcludeRgns[i].uRva)
|
---|
[57378] | 2182 | iDiff = supdrvNtCompare(pImage, pbImageBits, uRvaNext, aExcludeRgns[i].uRva - uRvaNext, pReq);
|
---|
[25331] | 2183 | uRvaNext = aExcludeRgns[i].uRva + aExcludeRgns[i].cb;
|
---|
| 2184 | }
|
---|
| 2185 | if (!iDiff && uRvaNext < pImage->cbImageBits)
|
---|
[57378] | 2186 | iDiff = supdrvNtCompare(pImage, pbImageBits, uRvaNext, pImage->cbImageBits - uRvaNext, pReq);
|
---|
[25331] | 2187 | if (!iDiff)
|
---|
| 2188 | return VINF_SUCCESS;
|
---|
| 2189 | }
|
---|
| 2190 | else
|
---|
[57378] | 2191 | supdrvNtCompare(pImage, pbImageBits, 0, pImage->cbImageBits, pReq);
|
---|
[25331] | 2192 | return VERR_LDR_MISMATCH_NATIVE;
|
---|
| 2193 | }
|
---|
[57378] | 2194 | return supdrvLdrLoadError(VERR_INTERNAL_ERROR_4, pReq, "No NT section object! Impossible!");
|
---|
[25258] | 2195 | }
|
---|
| 2196 |
|
---|
| 2197 |
|
---|
| 2198 | void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
|
---|
| 2199 | {
|
---|
[25262] | 2200 | if (pImage->pvNtSectionObj)
|
---|
| 2201 | {
|
---|
[25308] | 2202 | if (pImage->hMemLock != NIL_RTR0MEMOBJ)
|
---|
| 2203 | {
|
---|
| 2204 | RTR0MemObjFree(pImage->hMemLock, false /*fFreeMappings*/);
|
---|
| 2205 | pImage->hMemLock = NIL_RTR0MEMOBJ;
|
---|
| 2206 | }
|
---|
| 2207 |
|
---|
[25331] | 2208 | NTSTATUS rcNt = ZwSetSystemInformation(MY_SystemUnloadGdiDriverInformation,
|
---|
| 2209 | &pImage->pvNtSectionObj, sizeof(pImage->pvNtSectionObj));
|
---|
| 2210 | if (rcNt != STATUS_SUCCESS)
|
---|
| 2211 | SUPR0Printf("VBoxDrv: failed to unload '%s', rcNt=%#x\n", pImage->szName, rcNt);
|
---|
[25308] | 2212 | pImage->pvNtSectionObj = NULL;
|
---|
[25262] | 2213 | }
|
---|
| 2214 | NOREF(pDevExt);
|
---|
[25258] | 2215 | }
|
---|
| 2216 |
|
---|
| 2217 |
|
---|
[49634] | 2218 | #ifdef SUPDRV_WITH_MSR_PROBER
|
---|
| 2219 |
|
---|
[49855] | 2220 | #if 1
|
---|
| 2221 | /** @todo make this selectable. */
|
---|
| 2222 | # define AMD_MSR_PASSCODE 0x9c5a203a
|
---|
| 2223 | #else
|
---|
| 2224 | # define ASMRdMsrEx(a, b, c) ASMRdMsr(a)
|
---|
| 2225 | # define ASMWrMsrEx(a, b, c) ASMWrMsr(a,c)
|
---|
| 2226 | #endif
|
---|
| 2227 |
|
---|
| 2228 |
|
---|
[49635] | 2229 | /**
|
---|
| 2230 | * Argument package used by supdrvOSMsrProberRead and supdrvOSMsrProberWrite.
|
---|
| 2231 | */
|
---|
| 2232 | typedef struct SUPDRVNTMSPROBERARGS
|
---|
| 2233 | {
|
---|
| 2234 | uint32_t uMsr;
|
---|
| 2235 | uint64_t uValue;
|
---|
| 2236 | bool fGp;
|
---|
| 2237 | } SUPDRVNTMSPROBERARGS;
|
---|
| 2238 |
|
---|
| 2239 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberRead.} */
|
---|
| 2240 | static DECLCALLBACK(void) supdrvNtMsProberReadOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2241 | {
|
---|
| 2242 | /*
|
---|
| 2243 | * rdmsr and wrmsr faults can be caught even with interrupts disabled.
|
---|
| 2244 | * (At least on 32-bit XP.)
|
---|
| 2245 | */
|
---|
| 2246 | SUPDRVNTMSPROBERARGS *pArgs = (SUPDRVNTMSPROBERARGS *)pvUser1; NOREF(idCpu); NOREF(pvUser2);
|
---|
| 2247 | RTCCUINTREG fOldFlags = ASMIntDisableFlags();
|
---|
| 2248 | __try
|
---|
| 2249 | {
|
---|
[49855] | 2250 | pArgs->uValue = ASMRdMsrEx(pArgs->uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2251 | pArgs->fGp = false;
|
---|
| 2252 | }
|
---|
| 2253 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2254 | {
|
---|
| 2255 | pArgs->fGp = true;
|
---|
| 2256 | pArgs->uValue = 0;
|
---|
| 2257 | }
|
---|
| 2258 | ASMSetFlags(fOldFlags);
|
---|
| 2259 | }
|
---|
| 2260 |
|
---|
| 2261 |
|
---|
[49634] | 2262 | int VBOXCALL supdrvOSMsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t *puValue)
|
---|
| 2263 | {
|
---|
[49635] | 2264 | SUPDRVNTMSPROBERARGS Args;
|
---|
| 2265 | Args.uMsr = uMsr;
|
---|
| 2266 | Args.uValue = 0;
|
---|
| 2267 | Args.fGp = true;
|
---|
| 2268 |
|
---|
| 2269 | if (idCpu == NIL_RTCPUID)
|
---|
| 2270 | supdrvNtMsProberReadOnCpu(idCpu, &Args, NULL);
|
---|
| 2271 | else
|
---|
| 2272 | {
|
---|
| 2273 | int rc = RTMpOnSpecific(idCpu, supdrvNtMsProberReadOnCpu, &Args, NULL);
|
---|
| 2274 | if (RT_FAILURE(rc))
|
---|
| 2275 | return rc;
|
---|
| 2276 | }
|
---|
| 2277 |
|
---|
| 2278 | if (Args.fGp)
|
---|
| 2279 | return VERR_ACCESS_DENIED;
|
---|
| 2280 | *puValue = Args.uValue;
|
---|
| 2281 | return VINF_SUCCESS;
|
---|
[49634] | 2282 | }
|
---|
| 2283 |
|
---|
| 2284 |
|
---|
[49635] | 2285 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberWrite.} */
|
---|
| 2286 | static DECLCALLBACK(void) supdrvNtMsProberWriteOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2287 | {
|
---|
| 2288 | /*
|
---|
| 2289 | * rdmsr and wrmsr faults can be caught even with interrupts disabled.
|
---|
| 2290 | * (At least on 32-bit XP.)
|
---|
| 2291 | */
|
---|
| 2292 | SUPDRVNTMSPROBERARGS *pArgs = (SUPDRVNTMSPROBERARGS *)pvUser1; NOREF(idCpu); NOREF(pvUser2);
|
---|
| 2293 | RTCCUINTREG fOldFlags = ASMIntDisableFlags();
|
---|
| 2294 | __try
|
---|
| 2295 | {
|
---|
[49855] | 2296 | ASMWrMsrEx(pArgs->uMsr, AMD_MSR_PASSCODE, pArgs->uValue);
|
---|
[49635] | 2297 | pArgs->fGp = false;
|
---|
| 2298 | }
|
---|
| 2299 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2300 | {
|
---|
| 2301 | pArgs->fGp = true;
|
---|
| 2302 | }
|
---|
| 2303 | ASMSetFlags(fOldFlags);
|
---|
| 2304 | }
|
---|
| 2305 |
|
---|
[49634] | 2306 | int VBOXCALL supdrvOSMsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue)
|
---|
| 2307 | {
|
---|
[49635] | 2308 | SUPDRVNTMSPROBERARGS Args;
|
---|
| 2309 | Args.uMsr = uMsr;
|
---|
| 2310 | Args.uValue = uValue;
|
---|
| 2311 | Args.fGp = true;
|
---|
| 2312 |
|
---|
| 2313 | if (idCpu == NIL_RTCPUID)
|
---|
[62666] | 2314 | supdrvNtMsProberWriteOnCpu(idCpu, &Args, NULL);
|
---|
[49635] | 2315 | else
|
---|
| 2316 | {
|
---|
[62666] | 2317 | int rc = RTMpOnSpecific(idCpu, supdrvNtMsProberWriteOnCpu, &Args, NULL);
|
---|
[49635] | 2318 | if (RT_FAILURE(rc))
|
---|
| 2319 | return rc;
|
---|
| 2320 | }
|
---|
| 2321 |
|
---|
| 2322 | if (Args.fGp)
|
---|
| 2323 | return VERR_ACCESS_DENIED;
|
---|
| 2324 | return VINF_SUCCESS;
|
---|
[49634] | 2325 | }
|
---|
| 2326 |
|
---|
[49635] | 2327 | /** @callback_method_impl{FNRTMPWORKER, Worker for supdrvOSMsrProberModify.} */
|
---|
| 2328 | static DECLCALLBACK(void) supdrvNtMsProberModifyOnCpu(RTCPUID idCpu, void *pvUser1, void *pvUser2)
|
---|
| 2329 | {
|
---|
| 2330 | PSUPMSRPROBER pReq = (PSUPMSRPROBER)pvUser1;
|
---|
| 2331 | register uint32_t uMsr = pReq->u.In.uMsr;
|
---|
| 2332 | bool const fFaster = pReq->u.In.enmOp == SUPMSRPROBEROP_MODIFY_FASTER;
|
---|
| 2333 | uint64_t uBefore = 0;
|
---|
| 2334 | uint64_t uWritten = 0;
|
---|
| 2335 | uint64_t uAfter = 0;
|
---|
| 2336 | bool fBeforeGp = true;
|
---|
| 2337 | bool fModifyGp = true;
|
---|
| 2338 | bool fAfterGp = true;
|
---|
| 2339 | bool fRestoreGp = true;
|
---|
| 2340 | RTCCUINTREG fOldFlags;
|
---|
[62666] | 2341 | RT_NOREF2(idCpu, pvUser2);
|
---|
[49634] | 2342 |
|
---|
[49635] | 2343 | /*
|
---|
| 2344 | * Do the job.
|
---|
| 2345 | */
|
---|
| 2346 | fOldFlags = ASMIntDisableFlags();
|
---|
| 2347 | ASMCompilerBarrier(); /* paranoia */
|
---|
| 2348 | if (!fFaster)
|
---|
| 2349 | ASMWriteBackAndInvalidateCaches();
|
---|
| 2350 |
|
---|
| 2351 | __try
|
---|
| 2352 | {
|
---|
[49855] | 2353 | uBefore = ASMRdMsrEx(uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2354 | fBeforeGp = false;
|
---|
| 2355 | }
|
---|
| 2356 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2357 | {
|
---|
| 2358 | fBeforeGp = true;
|
---|
| 2359 | }
|
---|
| 2360 | if (!fBeforeGp)
|
---|
| 2361 | {
|
---|
| 2362 | register uint64_t uRestore = uBefore;
|
---|
| 2363 |
|
---|
| 2364 | /* Modify. */
|
---|
| 2365 | uWritten = uRestore;
|
---|
| 2366 | uWritten &= pReq->u.In.uArgs.Modify.fAndMask;
|
---|
| 2367 | uWritten |= pReq->u.In.uArgs.Modify.fOrMask;
|
---|
| 2368 | __try
|
---|
| 2369 | {
|
---|
[49855] | 2370 | ASMWrMsrEx(uMsr, AMD_MSR_PASSCODE, uWritten);
|
---|
[49635] | 2371 | fModifyGp = false;
|
---|
| 2372 | }
|
---|
| 2373 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2374 | {
|
---|
| 2375 | fModifyGp = true;
|
---|
| 2376 | }
|
---|
| 2377 |
|
---|
| 2378 | /* Read modified value. */
|
---|
| 2379 | __try
|
---|
| 2380 | {
|
---|
[49855] | 2381 | uAfter = ASMRdMsrEx(uMsr, AMD_MSR_PASSCODE);
|
---|
[49635] | 2382 | fAfterGp = false;
|
---|
| 2383 | }
|
---|
| 2384 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2385 | {
|
---|
| 2386 | fAfterGp = true;
|
---|
| 2387 | }
|
---|
| 2388 |
|
---|
| 2389 | /* Restore original value. */
|
---|
| 2390 | __try
|
---|
| 2391 | {
|
---|
[49855] | 2392 | ASMWrMsrEx(uMsr, AMD_MSR_PASSCODE, uRestore);
|
---|
[49635] | 2393 | fRestoreGp = false;
|
---|
| 2394 | }
|
---|
| 2395 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2396 | {
|
---|
| 2397 | fRestoreGp = true;
|
---|
| 2398 | }
|
---|
| 2399 |
|
---|
| 2400 | /* Invalid everything we can. */
|
---|
| 2401 | if (!fFaster)
|
---|
| 2402 | {
|
---|
| 2403 | ASMWriteBackAndInvalidateCaches();
|
---|
| 2404 | ASMReloadCR3();
|
---|
| 2405 | ASMNopPause();
|
---|
| 2406 | }
|
---|
| 2407 | }
|
---|
| 2408 |
|
---|
| 2409 | ASMCompilerBarrier(); /* paranoia */
|
---|
| 2410 | ASMSetFlags(fOldFlags);
|
---|
| 2411 |
|
---|
| 2412 | /*
|
---|
| 2413 | * Write out the results.
|
---|
| 2414 | */
|
---|
| 2415 | pReq->u.Out.uResults.Modify.uBefore = uBefore;
|
---|
| 2416 | pReq->u.Out.uResults.Modify.uWritten = uWritten;
|
---|
| 2417 | pReq->u.Out.uResults.Modify.uAfter = uAfter;
|
---|
| 2418 | pReq->u.Out.uResults.Modify.fBeforeGp = fBeforeGp;
|
---|
| 2419 | pReq->u.Out.uResults.Modify.fModifyGp = fModifyGp;
|
---|
| 2420 | pReq->u.Out.uResults.Modify.fAfterGp = fAfterGp;
|
---|
| 2421 | pReq->u.Out.uResults.Modify.fRestoreGp = fRestoreGp;
|
---|
| 2422 | RT_ZERO(pReq->u.Out.uResults.Modify.afReserved);
|
---|
| 2423 | }
|
---|
| 2424 |
|
---|
| 2425 |
|
---|
[49634] | 2426 | int VBOXCALL supdrvOSMsrProberModify(RTCPUID idCpu, PSUPMSRPROBER pReq)
|
---|
| 2427 | {
|
---|
[49635] | 2428 | if (idCpu == NIL_RTCPUID)
|
---|
| 2429 | {
|
---|
| 2430 | supdrvNtMsProberModifyOnCpu(idCpu, pReq, NULL);
|
---|
| 2431 | return VINF_SUCCESS;
|
---|
| 2432 | }
|
---|
| 2433 | return RTMpOnSpecific(idCpu, supdrvNtMsProberModifyOnCpu, pReq, NULL);
|
---|
[49634] | 2434 | }
|
---|
| 2435 |
|
---|
| 2436 | #endif /* SUPDRV_WITH_MSR_PROBER */
|
---|
| 2437 |
|
---|
| 2438 |
|
---|
[1850] | 2439 | /**
|
---|
[25465] | 2440 | * Converts an IPRT error code to an nt status code.
|
---|
[1] | 2441 | *
|
---|
| 2442 | * @returns corresponding nt status code.
|
---|
[25465] | 2443 | * @param rc IPRT error status code.
|
---|
[1] | 2444 | */
|
---|
[4800] | 2445 | static NTSTATUS VBoxDrvNtErr2NtStatus(int rc)
|
---|
[1] | 2446 | {
|
---|
| 2447 | switch (rc)
|
---|
| 2448 | {
|
---|
[25465] | 2449 | case VINF_SUCCESS: return STATUS_SUCCESS;
|
---|
| 2450 | case VERR_GENERAL_FAILURE: return STATUS_NOT_SUPPORTED;
|
---|
| 2451 | case VERR_INVALID_PARAMETER: return STATUS_INVALID_PARAMETER;
|
---|
| 2452 | case VERR_INVALID_MAGIC: return STATUS_UNKNOWN_REVISION;
|
---|
| 2453 | case VERR_INVALID_HANDLE: return STATUS_INVALID_HANDLE;
|
---|
| 2454 | case VERR_INVALID_POINTER: return STATUS_INVALID_ADDRESS;
|
---|
| 2455 | case VERR_LOCK_FAILED: return STATUS_NOT_LOCKED;
|
---|
| 2456 | case VERR_ALREADY_LOADED: return STATUS_IMAGE_ALREADY_LOADED;
|
---|
| 2457 | case VERR_PERMISSION_DENIED: return STATUS_ACCESS_DENIED;
|
---|
| 2458 | case VERR_VERSION_MISMATCH: return STATUS_REVISION_MISMATCH;
|
---|
[1] | 2459 | }
|
---|
| 2460 |
|
---|
[51770] | 2461 | if (rc < 0)
|
---|
| 2462 | {
|
---|
| 2463 | if (((uint32_t)rc & UINT32_C(0xffff0000)) == UINT32_C(0xffff0000))
|
---|
[51907] | 2464 | return (NTSTATUS)( ((uint32_t)rc & UINT32_C(0xffff)) | SUP_NT_STATUS_BASE );
|
---|
[51770] | 2465 | }
|
---|
[1] | 2466 | return STATUS_UNSUCCESSFUL;
|
---|
| 2467 | }
|
---|
| 2468 |
|
---|
| 2469 |
|
---|
[12161] | 2470 | /**
|
---|
| 2471 | * Alternative version of SUPR0Printf for Windows.
|
---|
| 2472 | *
|
---|
| 2473 | * @returns 0.
|
---|
| 2474 | * @param pszFormat The format string.
|
---|
| 2475 | */
|
---|
| 2476 | SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...)
|
---|
| 2477 | {
|
---|
| 2478 | va_list va;
|
---|
[67954] | 2479 | char szMsg[384];
|
---|
[12161] | 2480 |
|
---|
| 2481 | va_start(va, pszFormat);
|
---|
| 2482 | size_t cch = RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
|
---|
| 2483 | szMsg[sizeof(szMsg) - 1] = '\0';
|
---|
| 2484 | va_end(va);
|
---|
| 2485 |
|
---|
| 2486 | RTLogWriteDebugger(szMsg, cch);
|
---|
| 2487 | return 0;
|
---|
| 2488 | }
|
---|
[51770] | 2489 |
|
---|
| 2490 |
|
---|
[52192] | 2491 | SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
|
---|
| 2492 | {
|
---|
| 2493 | return 0;
|
---|
| 2494 | }
|
---|
| 2495 |
|
---|
| 2496 |
|
---|
[51770] | 2497 | #ifdef VBOX_WITH_HARDENING
|
---|
| 2498 |
|
---|
| 2499 | /** @name Identifying Special Processes: CSRSS.EXE
|
---|
| 2500 | * @{ */
|
---|
| 2501 |
|
---|
| 2502 |
|
---|
| 2503 | /**
|
---|
| 2504 | * Checks if the process is a system32 process by the given name.
|
---|
| 2505 | *
|
---|
| 2506 | * @returns true / false.
|
---|
| 2507 | * @param pProcess The process to check.
|
---|
| 2508 | * @param pszName The lower case process name (no path!).
|
---|
| 2509 | */
|
---|
| 2510 | static bool supdrvNtProtectIsSystem32ProcessMatch(PEPROCESS pProcess, const char *pszName)
|
---|
| 2511 | {
|
---|
| 2512 | Assert(strlen(pszName) < 16); /* see buffer below */
|
---|
| 2513 |
|
---|
| 2514 | /*
|
---|
| 2515 | * This test works on XP+.
|
---|
| 2516 | */
|
---|
| 2517 | const char *pszImageFile = (const char *)PsGetProcessImageFileName(pProcess);
|
---|
| 2518 | if (!pszImageFile)
|
---|
| 2519 | return false;
|
---|
| 2520 |
|
---|
| 2521 | if (RTStrICmp(pszImageFile, pszName) != 0)
|
---|
| 2522 | return false;
|
---|
| 2523 |
|
---|
| 2524 | /*
|
---|
| 2525 | * This test requires a Vista+ API.
|
---|
| 2526 | */
|
---|
| 2527 | if (g_pfnPsReferenceProcessFilePointer)
|
---|
| 2528 | {
|
---|
| 2529 | PFILE_OBJECT pFile = NULL;
|
---|
| 2530 | NTSTATUS rcNt = g_pfnPsReferenceProcessFilePointer(pProcess, &pFile);
|
---|
| 2531 | if (!NT_SUCCESS(rcNt))
|
---|
| 2532 | return false;
|
---|
| 2533 |
|
---|
| 2534 | union
|
---|
| 2535 | {
|
---|
| 2536 | OBJECT_NAME_INFORMATION Info;
|
---|
| 2537 | uint8_t abBuffer[sizeof(g_System32NtPath) + 16 * sizeof(WCHAR)];
|
---|
| 2538 | } Buf;
|
---|
| 2539 | ULONG cbIgn;
|
---|
| 2540 | rcNt = ObQueryNameString(pFile, &Buf.Info, sizeof(Buf) - sizeof(WCHAR), &cbIgn);
|
---|
| 2541 | ObDereferenceObject(pFile);
|
---|
| 2542 | if (!NT_SUCCESS(rcNt))
|
---|
| 2543 | return false;
|
---|
| 2544 |
|
---|
| 2545 | /* Terminate the name. */
|
---|
| 2546 | PRTUTF16 pwszName = Buf.Info.Name.Buffer;
|
---|
| 2547 | pwszName[Buf.Info.Name.Length / sizeof(RTUTF16)] = '\0';
|
---|
| 2548 |
|
---|
| 2549 | /* Match the name against the system32 directory path. */
|
---|
| 2550 | uint32_t cbSystem32 = g_System32NtPath.UniStr.Length;
|
---|
| 2551 | if (Buf.Info.Name.Length < cbSystem32)
|
---|
| 2552 | return false;
|
---|
| 2553 | if (memcmp(pwszName, g_System32NtPath.UniStr.Buffer, cbSystem32))
|
---|
| 2554 | return false;
|
---|
| 2555 | pwszName += cbSystem32 / sizeof(RTUTF16);
|
---|
| 2556 | if (*pwszName++ != '\\')
|
---|
| 2557 | return false;
|
---|
| 2558 |
|
---|
| 2559 | /* Compare the name. */
|
---|
| 2560 | const char *pszRight = pszName;
|
---|
| 2561 | for (;;)
|
---|
| 2562 | {
|
---|
| 2563 | WCHAR wchLeft = *pwszName++;
|
---|
| 2564 | char chRight = *pszRight++;
|
---|
| 2565 | Assert(chRight == RT_C_TO_LOWER(chRight));
|
---|
| 2566 |
|
---|
| 2567 | if ( wchLeft != chRight
|
---|
| 2568 | && RT_C_TO_LOWER(wchLeft) != chRight)
|
---|
| 2569 | return false;
|
---|
| 2570 | if (!chRight)
|
---|
| 2571 | break;
|
---|
| 2572 | }
|
---|
| 2573 | }
|
---|
| 2574 |
|
---|
| 2575 | return true;
|
---|
| 2576 | }
|
---|
| 2577 |
|
---|
| 2578 |
|
---|
| 2579 | /**
|
---|
| 2580 | * Checks if the current process is likely to be CSRSS.
|
---|
| 2581 | *
|
---|
| 2582 | * @returns true/false.
|
---|
| 2583 | * @param pProcess The process.
|
---|
| 2584 | */
|
---|
| 2585 | static bool supdrvNtProtectIsCsrssByProcess(PEPROCESS pProcess)
|
---|
| 2586 | {
|
---|
| 2587 | /*
|
---|
| 2588 | * On Windows 8.1 CSRSS.EXE is a protected process.
|
---|
| 2589 | */
|
---|
| 2590 | if (g_pfnPsIsProtectedProcessLight)
|
---|
| 2591 | {
|
---|
| 2592 | if (!g_pfnPsIsProtectedProcessLight(pProcess))
|
---|
| 2593 | return false;
|
---|
| 2594 | }
|
---|
| 2595 |
|
---|
| 2596 | /*
|
---|
| 2597 | * The name tests.
|
---|
| 2598 | */
|
---|
| 2599 | if (!supdrvNtProtectIsSystem32ProcessMatch(pProcess, "csrss.exe"))
|
---|
| 2600 | return false;
|
---|
| 2601 |
|
---|
| 2602 | /** @todo Could extend the CSRSS.EXE check with that the TokenUser of the
|
---|
| 2603 | * current process must be "NT AUTHORITY\SYSTEM" (S-1-5-18). */
|
---|
| 2604 |
|
---|
| 2605 | return true;
|
---|
| 2606 | }
|
---|
| 2607 |
|
---|
| 2608 |
|
---|
[52737] | 2609 | /**
|
---|
| 2610 | * Helper for supdrvNtProtectGetAlpcPortObjectType that tries out a name.
|
---|
| 2611 | *
|
---|
| 2612 | * @returns true if done, false if not.
|
---|
| 2613 | * @param pwszPortNm The port path.
|
---|
| 2614 | * @param ppObjType The object type return variable, updated when
|
---|
| 2615 | * returning true.
|
---|
| 2616 | */
|
---|
[52735] | 2617 | static bool supdrvNtProtectGetAlpcPortObjectType2(PCRTUTF16 pwszPortNm, POBJECT_TYPE *ppObjType)
|
---|
| 2618 | {
|
---|
| 2619 | bool fDone = false;
|
---|
| 2620 |
|
---|
| 2621 | UNICODE_STRING UniStrPortNm;
|
---|
| 2622 | UniStrPortNm.Buffer = (WCHAR *)pwszPortNm;
|
---|
| 2623 | UniStrPortNm.Length = (USHORT)(RTUtf16Len(pwszPortNm) * sizeof(WCHAR));
|
---|
| 2624 | UniStrPortNm.MaximumLength = UniStrPortNm.Length + sizeof(WCHAR);
|
---|
| 2625 |
|
---|
| 2626 | OBJECT_ATTRIBUTES ObjAttr;
|
---|
| 2627 | InitializeObjectAttributes(&ObjAttr, &UniStrPortNm, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);
|
---|
| 2628 |
|
---|
| 2629 | HANDLE hPort;
|
---|
| 2630 | NTSTATUS rcNt = g_pfnZwAlpcCreatePort(&hPort, &ObjAttr, NULL /*pPortAttribs*/);
|
---|
| 2631 | if (NT_SUCCESS(rcNt))
|
---|
| 2632 | {
|
---|
| 2633 | PVOID pvObject;
|
---|
| 2634 | rcNt = ObReferenceObjectByHandle(hPort, 0 /*DesiredAccess*/, NULL /*pObjectType*/,
|
---|
| 2635 | KernelMode, &pvObject, NULL /*pHandleInfo*/);
|
---|
| 2636 | if (NT_SUCCESS(rcNt))
|
---|
| 2637 | {
|
---|
| 2638 | POBJECT_TYPE pObjType = g_pfnObGetObjectType(pvObject);
|
---|
| 2639 | if (pObjType)
|
---|
| 2640 | {
|
---|
[52736] | 2641 | SUPR0Printf("vboxdrv: ALPC Port Object Type %p (vs %p)\n", pObjType, *ppObjType);
|
---|
[52735] | 2642 | *ppObjType = pObjType;
|
---|
| 2643 | fDone = true;
|
---|
| 2644 | }
|
---|
| 2645 | ObDereferenceObject(pvObject);
|
---|
| 2646 | }
|
---|
| 2647 | NtClose(hPort);
|
---|
| 2648 | }
|
---|
| 2649 | return fDone;
|
---|
| 2650 | }
|
---|
| 2651 |
|
---|
| 2652 |
|
---|
[52737] | 2653 | /**
|
---|
| 2654 | * Attempts to retrieve the ALPC Port object type.
|
---|
| 2655 | *
|
---|
| 2656 | * We've had at least three reports that using LpcPortObjectType when trying to
|
---|
| 2657 | * get at the ApiPort object results in STATUS_OBJECT_TYPE_MISMATCH errors.
|
---|
| 2658 | * It's not known who has modified LpcPortObjectType or AlpcPortObjectType (not
|
---|
| 2659 | * exported) so that it differs from the actual ApiPort type, or maybe this
|
---|
| 2660 | * unknown entity is intercepting our attempt to reference the port and
|
---|
| 2661 | * tries to mislead us. The paranoid explanataion is of course that some evil
|
---|
| 2662 | * root kit like software is messing with the OS, however, it's possible that
|
---|
| 2663 | * this is valid kernel behavior that 99.8% of our users and 100% of the
|
---|
| 2664 | * developers are not triggering for some reason.
|
---|
| 2665 | *
|
---|
| 2666 | * The code here creates an ALPC port object and gets it's type. It will cache
|
---|
| 2667 | * the result in g_pAlpcPortObjectType2 on success.
|
---|
| 2668 | *
|
---|
| 2669 | * @returns Object type.
|
---|
| 2670 | * @param uSessionId The session id.
|
---|
| 2671 | * @param pszSessionId The session id formatted as a string.
|
---|
| 2672 | */
|
---|
[52735] | 2673 | static POBJECT_TYPE supdrvNtProtectGetAlpcPortObjectType(uint32_t uSessionId, const char *pszSessionId)
|
---|
| 2674 | {
|
---|
| 2675 | POBJECT_TYPE pObjType = *LpcPortObjectType;
|
---|
| 2676 |
|
---|
| 2677 | if ( g_pfnZwAlpcCreatePort
|
---|
| 2678 | && g_pfnObGetObjectType)
|
---|
| 2679 | {
|
---|
| 2680 | int rc;
|
---|
| 2681 | ssize_t cchTmp; NOREF(cchTmp);
|
---|
| 2682 | char szTmp[16];
|
---|
| 2683 | RTUTF16 wszPortNm[128];
|
---|
| 2684 | size_t offRand;
|
---|
| 2685 |
|
---|
| 2686 | /*
|
---|
| 2687 | * First attempt is in the session directory.
|
---|
| 2688 | */
|
---|
| 2689 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\Sessions\\");
|
---|
| 2690 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), pszSessionId);
|
---|
| 2691 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\VBoxDrv-");
|
---|
| 2692 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), (uint32_t)(uintptr_t)PsGetProcessId(PsGetCurrentProcess()), 16, 0, 0, 0);
|
---|
| 2693 | Assert(cchTmp > 0);
|
---|
| 2694 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2695 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "-");
|
---|
| 2696 | offRand = RTUtf16Len(wszPortNm);
|
---|
| 2697 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 2698 | Assert(cchTmp > 0);
|
---|
| 2699 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2700 | AssertRCSuccess(rc);
|
---|
| 2701 |
|
---|
| 2702 | bool fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 2703 | if (!fDone)
|
---|
| 2704 | {
|
---|
| 2705 | wszPortNm[offRand] = '\0';
|
---|
| 2706 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0); Assert(cchTmp > 0);
|
---|
| 2707 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2708 | AssertRCSuccess(rc);
|
---|
| 2709 |
|
---|
| 2710 | fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 2711 | }
|
---|
| 2712 | if (!fDone)
|
---|
| 2713 | {
|
---|
| 2714 | /*
|
---|
| 2715 | * Try base names.
|
---|
| 2716 | */
|
---|
| 2717 | if (uSessionId == 0)
|
---|
| 2718 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\BaseNamedObjects\\VBoxDrv-");
|
---|
| 2719 | else
|
---|
| 2720 | {
|
---|
| 2721 | rc = RTUtf16CopyAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\Sessions\\");
|
---|
| 2722 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), pszSessionId);
|
---|
| 2723 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "\\BaseNamedObjects\\VBoxDrv-");
|
---|
| 2724 | }
|
---|
| 2725 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), (uint32_t)(uintptr_t)PsGetProcessId(PsGetCurrentProcess()), 16, 0, 0, 0);
|
---|
| 2726 | Assert(cchTmp > 0);
|
---|
| 2727 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2728 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), "-");
|
---|
| 2729 | offRand = RTUtf16Len(wszPortNm);
|
---|
| 2730 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 2731 | Assert(cchTmp > 0);
|
---|
| 2732 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2733 | AssertRCSuccess(rc);
|
---|
| 2734 |
|
---|
| 2735 | bool fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 2736 | if (!fDone)
|
---|
| 2737 | {
|
---|
| 2738 | wszPortNm[offRand] = '\0';
|
---|
| 2739 | cchTmp = RTStrFormatU32(szTmp, sizeof(szTmp), RTRandU32(), 16, 0, 0, 0);
|
---|
| 2740 | Assert(cchTmp > 0);
|
---|
| 2741 | rc |= RTUtf16CatAscii(wszPortNm, RT_ELEMENTS(wszPortNm), szTmp);
|
---|
| 2742 | AssertRCSuccess(rc);
|
---|
| 2743 |
|
---|
| 2744 | fDone = supdrvNtProtectGetAlpcPortObjectType2(wszPortNm, &pObjType);
|
---|
| 2745 | }
|
---|
| 2746 | }
|
---|
| 2747 |
|
---|
| 2748 | /* Cache the result in g_pAlpcPortObjectType2. */
|
---|
| 2749 | if ( g_pAlpcPortObjectType2 == NULL
|
---|
| 2750 | && pObjType != g_pAlpcPortObjectType1
|
---|
| 2751 | && fDone)
|
---|
| 2752 | g_pAlpcPortObjectType2 = pObjType;
|
---|
| 2753 |
|
---|
| 2754 | }
|
---|
| 2755 |
|
---|
| 2756 | return pObjType;
|
---|
| 2757 | }
|
---|
| 2758 |
|
---|
| 2759 |
|
---|
[51770] | 2760 | /**
|
---|
| 2761 | * Called in the context of VBoxDrvNtCreate to determin the CSRSS for the
|
---|
| 2762 | * current process.
|
---|
| 2763 | *
|
---|
| 2764 | * The Client/Server Runtime Subsystem (CSRSS) process needs to be allowed some
|
---|
| 2765 | * additional access right so we need to make 101% sure we correctly identify
|
---|
| 2766 | * the CSRSS process a process is associated with.
|
---|
| 2767 | *
|
---|
| 2768 | * @returns IPRT status code.
|
---|
| 2769 | * @param pNtProtect The NT protected process structure. The
|
---|
| 2770 | * hCsrssPid member will be updated on success.
|
---|
| 2771 | */
|
---|
| 2772 | static int supdrvNtProtectFindAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 2773 | {
|
---|
| 2774 | Assert(pNtProtect->AvlCore.Key == PsGetCurrentProcessId());
|
---|
| 2775 | Assert(pNtProtect->pCsrssProcess == NULL);
|
---|
| 2776 | Assert(pNtProtect->hCsrssPid == NULL);
|
---|
| 2777 |
|
---|
| 2778 | /*
|
---|
| 2779 | * We'll try use the ApiPort LPC object for the session we're in to track
|
---|
| 2780 | * down the CSRSS process. So, we start by constructing a path to it.
|
---|
| 2781 | */
|
---|
[52735] | 2782 | int rc;
|
---|
[51770] | 2783 | uint32_t uSessionId = PsGetProcessSessionId(PsGetCurrentProcess());
|
---|
[52735] | 2784 | char szSessionId[16];
|
---|
[51770] | 2785 | WCHAR wszApiPort[48];
|
---|
| 2786 | if (uSessionId == 0)
|
---|
[52735] | 2787 | {
|
---|
| 2788 | szSessionId[0] = '0';
|
---|
| 2789 | szSessionId[1] = '\0';
|
---|
[51770] | 2790 | rc = RTUtf16CopyAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Windows\\ApiPort");
|
---|
[52735] | 2791 | }
|
---|
[51770] | 2792 | else
|
---|
| 2793 | {
|
---|
[52735] | 2794 | ssize_t cchTmp = RTStrFormatU32(szSessionId, sizeof(szSessionId), uSessionId, 10, 0, 0, 0);
|
---|
[51770] | 2795 | AssertReturn(cchTmp > 0, (int)cchTmp);
|
---|
| 2796 | rc = RTUtf16CopyAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Sessions\\");
|
---|
| 2797 | if (RT_SUCCESS(rc))
|
---|
[52735] | 2798 | rc = RTUtf16CatAscii(wszApiPort, RT_ELEMENTS(wszApiPort), szSessionId);
|
---|
[51770] | 2799 | if (RT_SUCCESS(rc))
|
---|
| 2800 | rc = RTUtf16CatAscii(wszApiPort, RT_ELEMENTS(wszApiPort), "\\Windows\\ApiPort");
|
---|
| 2801 | }
|
---|
| 2802 | AssertRCReturn(rc, rc);
|
---|
| 2803 |
|
---|
| 2804 | UNICODE_STRING ApiPortStr;
|
---|
| 2805 | ApiPortStr.Buffer = wszApiPort;
|
---|
| 2806 | ApiPortStr.Length = (USHORT)(RTUtf16Len(wszApiPort) * sizeof(RTUTF16));
|
---|
| 2807 | ApiPortStr.MaximumLength = ApiPortStr.Length + sizeof(RTUTF16);
|
---|
| 2808 |
|
---|
| 2809 | /*
|
---|
| 2810 | * The object cannot be opened, but we can reference it by name.
|
---|
| 2811 | */
|
---|
| 2812 | void *pvApiPortObj = NULL;
|
---|
| 2813 | NTSTATUS rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 2814 | 0,
|
---|
| 2815 | NULL /*pAccessState*/,
|
---|
| 2816 | STANDARD_RIGHTS_READ,
|
---|
[52735] | 2817 | g_pAlpcPortObjectType1,
|
---|
[51770] | 2818 | KernelMode,
|
---|
| 2819 | NULL /*pvParseContext*/,
|
---|
| 2820 | &pvApiPortObj);
|
---|
[52735] | 2821 | if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH
|
---|
| 2822 | && g_pAlpcPortObjectType2 != NULL)
|
---|
| 2823 | rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 2824 | 0,
|
---|
| 2825 | NULL /*pAccessState*/,
|
---|
| 2826 | STANDARD_RIGHTS_READ,
|
---|
| 2827 | g_pAlpcPortObjectType2,
|
---|
| 2828 | KernelMode,
|
---|
| 2829 | NULL /*pvParseContext*/,
|
---|
| 2830 | &pvApiPortObj);
|
---|
| 2831 | if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH
|
---|
| 2832 | && g_pfnObGetObjectType
|
---|
| 2833 | && g_pfnZwAlpcCreatePort)
|
---|
| 2834 | rcNt = ObReferenceObjectByName(&ApiPortStr,
|
---|
| 2835 | 0,
|
---|
| 2836 | NULL /*pAccessState*/,
|
---|
| 2837 | STANDARD_RIGHTS_READ,
|
---|
| 2838 | supdrvNtProtectGetAlpcPortObjectType(uSessionId, szSessionId),
|
---|
| 2839 | KernelMode,
|
---|
| 2840 | NULL /*pvParseContext*/,
|
---|
| 2841 | &pvApiPortObj);
|
---|
[51770] | 2842 | if (!NT_SUCCESS(rcNt))
|
---|
| 2843 | {
|
---|
| 2844 | SUPR0Printf("vboxdrv: Error opening '%ls': %#x\n", wszApiPort, rcNt);
|
---|
[52735] | 2845 | return rcNt == STATUS_OBJECT_TYPE_MISMATCH ? VERR_SUPDRV_APIPORT_OPEN_ERROR_TYPE : VERR_SUPDRV_APIPORT_OPEN_ERROR;
|
---|
[51770] | 2846 | }
|
---|
| 2847 |
|
---|
| 2848 | /*
|
---|
| 2849 | * Query the processes in the system so we can locate CSRSS.EXE candidates.
|
---|
| 2850 | * Note! Attempts at using SystemSessionProcessInformation failed with
|
---|
| 2851 | * STATUS_ACCESS_VIOLATION.
|
---|
[51918] | 2852 | * Note! The 32 bytes on the size of to counteract the allocation header
|
---|
| 2853 | * that rtR0MemAllocEx slaps on everything.
|
---|
[51770] | 2854 | */
|
---|
[51918] | 2855 | ULONG cbNeeded = _64K - 32;
|
---|
[51770] | 2856 | uint32_t cbBuf;
|
---|
| 2857 | uint8_t *pbBuf = NULL;
|
---|
| 2858 | do
|
---|
| 2859 | {
|
---|
[51918] | 2860 | cbBuf = RT_ALIGN(cbNeeded + _4K, _64K) - 32;
|
---|
[51770] | 2861 | pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 2862 | if (!pbBuf)
|
---|
| 2863 | break;
|
---|
| 2864 |
|
---|
| 2865 | cbNeeded = 0;
|
---|
| 2866 | #if 0 /* doesn't work. */
|
---|
| 2867 | SYSTEM_SESSION_PROCESS_INFORMATION Req;
|
---|
| 2868 | Req.SessionId = uSessionId;
|
---|
| 2869 | Req.BufferLength = cbBuf;
|
---|
| 2870 | Req.Buffer = pbBuf;
|
---|
| 2871 | rcNt = NtQuerySystemInformation(SystemSessionProcessInformation, &Req, sizeof(Req), &cbNeeded);
|
---|
| 2872 | #else
|
---|
| 2873 | rcNt = NtQuerySystemInformation(SystemProcessInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 2874 | #endif
|
---|
| 2875 | if (NT_SUCCESS(rcNt))
|
---|
| 2876 | break;
|
---|
| 2877 |
|
---|
| 2878 | RTMemFree(pbBuf);
|
---|
| 2879 | pbBuf = NULL;
|
---|
| 2880 | } while ( rcNt == STATUS_INFO_LENGTH_MISMATCH
|
---|
| 2881 | && cbNeeded > cbBuf
|
---|
| 2882 | && cbNeeded < 32U*_1M);
|
---|
| 2883 |
|
---|
| 2884 | if ( pbBuf
|
---|
| 2885 | && NT_SUCCESS(rcNt)
|
---|
| 2886 | && cbNeeded >= sizeof(SYSTEM_PROCESS_INFORMATION))
|
---|
| 2887 | {
|
---|
| 2888 | /*
|
---|
| 2889 | * Walk the returned data and look for the process associated with the
|
---|
| 2890 | * ApiPort object. The ApiPort object keeps the EPROCESS address of
|
---|
| 2891 | * the owner process (i.e. CSRSS) relatively early in the structure. On
|
---|
| 2892 | * 64-bit windows 8.1 it's at offset 0x18. So, obtain the EPROCESS
|
---|
| 2893 | * pointer to likely CSRSS processes and check for a match in the first
|
---|
| 2894 | * 0x40 bytes of the ApiPort object.
|
---|
| 2895 | */
|
---|
| 2896 | rc = VERR_SUPDRV_CSRSS_NOT_FOUND;
|
---|
| 2897 | for (uint32_t offBuf = 0; offBuf <= cbNeeded - sizeof(SYSTEM_PROCESS_INFORMATION);)
|
---|
| 2898 | {
|
---|
| 2899 | PRTNT_SYSTEM_PROCESS_INFORMATION pProcInfo = (PRTNT_SYSTEM_PROCESS_INFORMATION)&pbBuf[offBuf];
|
---|
| 2900 | if ( pProcInfo->ProcessName.Length == 9 * sizeof(WCHAR)
|
---|
| 2901 | && pProcInfo->NumberOfThreads > 2 /* Very low guess. */
|
---|
| 2902 | && pProcInfo->HandleCount > 32 /* Very low guess, I hope. */
|
---|
| 2903 | && (uintptr_t)pProcInfo->ProcessName.Buffer - (uintptr_t)pbBuf < cbNeeded
|
---|
| 2904 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[0]) == 'c'
|
---|
| 2905 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[1]) == 's'
|
---|
| 2906 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[2]) == 'r'
|
---|
| 2907 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[3]) == 's'
|
---|
| 2908 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[4]) == 's'
|
---|
| 2909 | && pProcInfo->ProcessName.Buffer[5] == '.'
|
---|
| 2910 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[6]) == 'e'
|
---|
| 2911 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[7]) == 'x'
|
---|
| 2912 | && RT_C_TO_LOWER(pProcInfo->ProcessName.Buffer[8]) == 'e' )
|
---|
| 2913 | {
|
---|
| 2914 |
|
---|
| 2915 | /* Get the process structure and perform some more thorough
|
---|
| 2916 | process checks. */
|
---|
| 2917 | PEPROCESS pProcess;
|
---|
| 2918 | rcNt = PsLookupProcessByProcessId(pProcInfo->UniqueProcessId, &pProcess);
|
---|
| 2919 | if (NT_SUCCESS(rcNt))
|
---|
| 2920 | {
|
---|
| 2921 | if (supdrvNtProtectIsCsrssByProcess(pProcess))
|
---|
| 2922 | {
|
---|
| 2923 | if (PsGetProcessSessionId(pProcess) == uSessionId)
|
---|
| 2924 | {
|
---|
| 2925 | /* Final test, check the ApiPort.
|
---|
| 2926 | Note! The old LPC (pre Vista) objects has the PID
|
---|
| 2927 | much earlier in the structure. Might be
|
---|
| 2928 | worth looking for it instead. */
|
---|
| 2929 | bool fThatsIt = false;
|
---|
| 2930 | __try
|
---|
| 2931 | {
|
---|
| 2932 | PEPROCESS *ppPortProc = (PEPROCESS *)pvApiPortObj;
|
---|
| 2933 | uint32_t cTests = g_uNtVerCombined >= SUP_NT_VER_VISTA ? 16 : 38; /* ALPC since Vista. */
|
---|
| 2934 | do
|
---|
| 2935 | {
|
---|
| 2936 | fThatsIt = *ppPortProc == pProcess;
|
---|
| 2937 | ppPortProc++;
|
---|
| 2938 | } while (!fThatsIt && --cTests > 0);
|
---|
| 2939 | }
|
---|
| 2940 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 2941 | {
|
---|
| 2942 | fThatsIt = false;
|
---|
| 2943 | }
|
---|
| 2944 | if (fThatsIt)
|
---|
| 2945 | {
|
---|
| 2946 | /* Ok, we found it! Keep the process structure
|
---|
| 2947 | reference as well as the PID so we can
|
---|
| 2948 | safely identify it later on. */
|
---|
| 2949 | pNtProtect->hCsrssPid = pProcInfo->UniqueProcessId;
|
---|
| 2950 | pNtProtect->pCsrssProcess = pProcess;
|
---|
| 2951 | rc = VINF_SUCCESS;
|
---|
| 2952 | break;
|
---|
| 2953 | }
|
---|
| 2954 | }
|
---|
| 2955 | }
|
---|
| 2956 |
|
---|
| 2957 | ObDereferenceObject(pProcess);
|
---|
| 2958 | }
|
---|
| 2959 | }
|
---|
| 2960 |
|
---|
| 2961 | /* Advance. */
|
---|
| 2962 | if (!pProcInfo->NextEntryOffset)
|
---|
| 2963 | break;
|
---|
| 2964 | offBuf += pProcInfo->NextEntryOffset;
|
---|
| 2965 | }
|
---|
| 2966 | }
|
---|
| 2967 | else
|
---|
| 2968 | rc = VERR_SUPDRV_SESSION_PROCESS_ENUM_ERROR;
|
---|
| 2969 | RTMemFree(pbBuf);
|
---|
| 2970 | ObDereferenceObject(pvApiPortObj);
|
---|
| 2971 | return rc;
|
---|
| 2972 | }
|
---|
| 2973 |
|
---|
| 2974 |
|
---|
| 2975 | /**
|
---|
| 2976 | * Checks that the given process is the CSRSS process associated with protected
|
---|
| 2977 | * process.
|
---|
| 2978 | *
|
---|
| 2979 | * @returns true / false.
|
---|
| 2980 | * @param pNtProtect The NT protection structure.
|
---|
| 2981 | * @param pCsrss The process structure of the alleged CSRSS.EXE
|
---|
| 2982 | * process.
|
---|
| 2983 | */
|
---|
| 2984 | static bool supdrvNtProtectIsAssociatedCsrss(PSUPDRVNTPROTECT pNtProtect, PEPROCESS pCsrss)
|
---|
| 2985 | {
|
---|
| 2986 | if (pNtProtect->pCsrssProcess == pCsrss)
|
---|
| 2987 | {
|
---|
| 2988 | if (pNtProtect->hCsrssPid == PsGetProcessId(pCsrss))
|
---|
| 2989 | {
|
---|
| 2990 | return true;
|
---|
| 2991 | }
|
---|
| 2992 | }
|
---|
| 2993 | return false;
|
---|
| 2994 | }
|
---|
| 2995 |
|
---|
| 2996 |
|
---|
| 2997 | /**
|
---|
| 2998 | * Checks if the given process is the stupid themes service.
|
---|
| 2999 | *
|
---|
| 3000 | * The caller does some screening of access masks and what not. We do the rest.
|
---|
| 3001 | *
|
---|
| 3002 | * @returns true / false.
|
---|
| 3003 | * @param pNtProtect The NT protection structure.
|
---|
| 3004 | * @param pAnnoyingProcess The process structure of an process that might
|
---|
| 3005 | * happen to be the annoying themes process.
|
---|
| 3006 | */
|
---|
| 3007 | static bool supdrvNtProtectIsFrigginThemesService(PSUPDRVNTPROTECT pNtProtect, PEPROCESS pAnnoyingProcess)
|
---|
| 3008 | {
|
---|
[62677] | 3009 | RT_NOREF1(pNtProtect);
|
---|
| 3010 |
|
---|
[51770] | 3011 | /*
|
---|
| 3012 | * Check the process name.
|
---|
| 3013 | */
|
---|
| 3014 | if (!supdrvNtProtectIsSystem32ProcessMatch(pAnnoyingProcess, "svchost.exe"))
|
---|
| 3015 | return false;
|
---|
| 3016 |
|
---|
| 3017 | /** @todo Come up with more checks. */
|
---|
| 3018 |
|
---|
| 3019 | return true;
|
---|
| 3020 | }
|
---|
| 3021 |
|
---|
| 3022 |
|
---|
[52387] | 3023 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 3024 | /**
|
---|
| 3025 | * Checks if the given process is one of the whitelisted debuggers.
|
---|
| 3026 | *
|
---|
| 3027 | * @returns true / false.
|
---|
| 3028 | * @param pProcess The process to check.
|
---|
| 3029 | */
|
---|
| 3030 | static bool supdrvNtProtectIsWhitelistedDebugger(PEPROCESS pProcess)
|
---|
| 3031 | {
|
---|
| 3032 | const char *pszImageFile = (const char *)PsGetProcessImageFileName(pProcess);
|
---|
| 3033 | if (!pszImageFile)
|
---|
| 3034 | return false;
|
---|
| 3035 |
|
---|
| 3036 | if (pszImageFile[0] == 'w' || pszImageFile[0] == 'W')
|
---|
| 3037 | {
|
---|
| 3038 | if (RTStrICmp(pszImageFile, "windbg.exe") == 0)
|
---|
| 3039 | return true;
|
---|
| 3040 | if (RTStrICmp(pszImageFile, "werfault.exe") == 0)
|
---|
| 3041 | return true;
|
---|
| 3042 | if (RTStrICmp(pszImageFile, "werfaultsecure.exe") == 0)
|
---|
| 3043 | return true;
|
---|
| 3044 | }
|
---|
| 3045 | else if (pszImageFile[0] == 'd' || pszImageFile[0] == 'D')
|
---|
| 3046 | {
|
---|
| 3047 | if (RTStrICmp(pszImageFile, "drwtsn32.exe") == 0)
|
---|
| 3048 | return true;
|
---|
| 3049 | if (RTStrICmp(pszImageFile, "dwwin.exe") == 0)
|
---|
| 3050 | return true;
|
---|
| 3051 | }
|
---|
| 3052 |
|
---|
| 3053 | return false;
|
---|
| 3054 | }
|
---|
| 3055 | #endif /* VBOX_WITHOUT_DEBUGGER_CHECKS */
|
---|
| 3056 |
|
---|
| 3057 |
|
---|
[51770] | 3058 | /** @} */
|
---|
| 3059 |
|
---|
| 3060 |
|
---|
| 3061 | /** @name Process Creation Callbacks.
|
---|
| 3062 | * @{ */
|
---|
| 3063 |
|
---|
[53002] | 3064 |
|
---|
[51770] | 3065 | /**
|
---|
[53002] | 3066 | * Cleans up VBoxDrv or VBoxDrvStub error info not collected by the dead process.
|
---|
| 3067 | *
|
---|
| 3068 | * @param hProcessId The ID of the dead process.
|
---|
| 3069 | */
|
---|
| 3070 | static void supdrvNtErrorInfoCleanupProcess(HANDLE hProcessId)
|
---|
| 3071 | {
|
---|
| 3072 | int rc = RTSemMutexRequestNoResume(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 3073 | if (RT_SUCCESS(rc))
|
---|
| 3074 | {
|
---|
| 3075 | PSUPDRVNTERRORINFO pCur, pNext;
|
---|
| 3076 | RTListForEachSafe(&g_ErrorInfoHead, pCur, pNext, SUPDRVNTERRORINFO, ListEntry)
|
---|
| 3077 | {
|
---|
| 3078 | if (pCur->hProcessId == hProcessId)
|
---|
| 3079 | {
|
---|
| 3080 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 3081 | RTMemFree(pCur);
|
---|
| 3082 | }
|
---|
| 3083 | }
|
---|
| 3084 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 3085 | }
|
---|
| 3086 | }
|
---|
| 3087 |
|
---|
| 3088 |
|
---|
| 3089 | /**
|
---|
[51770] | 3090 | * Common worker used by the process creation hooks as well as the process
|
---|
| 3091 | * handle creation hooks to check if a VM process is being created.
|
---|
| 3092 | *
|
---|
| 3093 | * @returns true if likely to be a VM process, false if not.
|
---|
| 3094 | * @param pNtStub The NT protection structure for the possible
|
---|
| 3095 | * stub process.
|
---|
| 3096 | * @param hParentPid The parent pid.
|
---|
| 3097 | * @param hChildPid The child pid.
|
---|
| 3098 | */
|
---|
| 3099 | static bool supdrvNtProtectIsSpawningStubProcess(PSUPDRVNTPROTECT pNtStub, HANDLE hParentPid, HANDLE hChildPid)
|
---|
| 3100 | {
|
---|
| 3101 | bool fRc = false;
|
---|
| 3102 | if (pNtStub->AvlCore.Key == hParentPid) /* paranoia */
|
---|
| 3103 | {
|
---|
| 3104 | if (pNtStub->enmProcessKind == kSupDrvNtProtectKind_StubSpawning)
|
---|
| 3105 | {
|
---|
| 3106 | /* Compare short names. */
|
---|
| 3107 | PEPROCESS pStubProcess;
|
---|
| 3108 | NTSTATUS rcNt = PsLookupProcessByProcessId(hParentPid, &pStubProcess);
|
---|
| 3109 | if (NT_SUCCESS(rcNt))
|
---|
| 3110 | {
|
---|
| 3111 | PEPROCESS pChildProcess;
|
---|
| 3112 | rcNt = PsLookupProcessByProcessId(hChildPid, &pChildProcess);
|
---|
| 3113 | if (NT_SUCCESS(rcNt))
|
---|
| 3114 | {
|
---|
| 3115 | const char *pszStub = (const char *)PsGetProcessImageFileName(pStubProcess);
|
---|
| 3116 | const char *pszChild = (const char *)PsGetProcessImageFileName(pChildProcess);
|
---|
| 3117 | fRc = pszStub != NULL
|
---|
| 3118 | && pszChild != NULL
|
---|
| 3119 | && strcmp(pszStub, pszChild) == 0;
|
---|
| 3120 |
|
---|
| 3121 | /** @todo check that the full image names matches. */
|
---|
| 3122 |
|
---|
| 3123 | ObDereferenceObject(pChildProcess);
|
---|
| 3124 | }
|
---|
| 3125 | ObDereferenceObject(pStubProcess);
|
---|
| 3126 | }
|
---|
| 3127 | }
|
---|
| 3128 | }
|
---|
| 3129 | return fRc;
|
---|
| 3130 | }
|
---|
| 3131 |
|
---|
| 3132 |
|
---|
| 3133 | /**
|
---|
| 3134 | * Common code used by the notifies to protect a child process.
|
---|
| 3135 | *
|
---|
| 3136 | * @returns VBox status code.
|
---|
| 3137 | * @param pNtStub The NT protect structure for the parent.
|
---|
| 3138 | * @param hChildPid The child pid.
|
---|
| 3139 | */
|
---|
| 3140 | static int supdrvNtProtectProtectNewStubChild(PSUPDRVNTPROTECT pNtParent, HANDLE hChildPid)
|
---|
| 3141 | {
|
---|
| 3142 | /*
|
---|
| 3143 | * Create a child protection struction.
|
---|
| 3144 | */
|
---|
| 3145 | PSUPDRVNTPROTECT pNtChild;
|
---|
| 3146 | int rc = supdrvNtProtectCreate(&pNtChild, hChildPid, kSupDrvNtProtectKind_VmProcessUnconfirmed, false /*fLink*/);
|
---|
| 3147 | if (RT_SUCCESS(rc))
|
---|
| 3148 | {
|
---|
| 3149 | pNtChild->fFirstProcessCreateHandle = true;
|
---|
| 3150 | pNtChild->fFirstThreadCreateHandle = true;
|
---|
| 3151 | pNtChild->fCsrssFirstProcessCreateHandle = true;
|
---|
[52905] | 3152 | pNtChild->cCsrssFirstProcessDuplicateHandle = ARCH_BITS == 32 ? 2 : 1;
|
---|
[51770] | 3153 | pNtChild->fThemesFirstProcessCreateHandle = true;
|
---|
| 3154 | pNtChild->hParentPid = pNtParent->AvlCore.Key;
|
---|
| 3155 | pNtChild->hCsrssPid = pNtParent->hCsrssPid;
|
---|
| 3156 | pNtChild->pCsrssProcess = pNtParent->pCsrssProcess;
|
---|
| 3157 | if (pNtChild->pCsrssProcess)
|
---|
| 3158 | ObReferenceObject(pNtChild->pCsrssProcess);
|
---|
| 3159 |
|
---|
| 3160 | /*
|
---|
| 3161 | * Take the spinlock, recheck parent conditions and link things.
|
---|
| 3162 | */
|
---|
| 3163 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 3164 | if (pNtParent->enmProcessKind == kSupDrvNtProtectKind_StubSpawning)
|
---|
| 3165 | {
|
---|
| 3166 | bool fSuccess = RTAvlPVInsert(&g_NtProtectTree, &pNtChild->AvlCore);
|
---|
| 3167 | if (fSuccess)
|
---|
| 3168 | {
|
---|
[57303] | 3169 | pNtChild->fInTree = true;
|
---|
[51770] | 3170 | pNtParent->u.pChild = pNtChild; /* Parent keeps the initial reference. */
|
---|
| 3171 | pNtParent->enmProcessKind = kSupDrvNtProtectKind_StubParent;
|
---|
| 3172 | pNtChild->u.pParent = pNtParent;
|
---|
| 3173 |
|
---|
| 3174 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3175 | return VINF_SUCCESS;
|
---|
| 3176 | }
|
---|
| 3177 |
|
---|
| 3178 | rc = VERR_INTERNAL_ERROR_2;
|
---|
| 3179 | }
|
---|
| 3180 | else
|
---|
| 3181 | rc = VERR_WRONG_ORDER;
|
---|
[53329] | 3182 | pNtChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
[51770] | 3183 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3184 |
|
---|
| 3185 | supdrvNtProtectRelease(pNtChild);
|
---|
| 3186 | }
|
---|
| 3187 | return rc;
|
---|
| 3188 | }
|
---|
| 3189 |
|
---|
| 3190 |
|
---|
| 3191 | /**
|
---|
| 3192 | * Common process termination code.
|
---|
| 3193 | *
|
---|
| 3194 | * Transitions protected process to the dead states, protecting against handle
|
---|
| 3195 | * PID reuse (esp. with unconfirmed VM processes) and handle cleanup issues.
|
---|
| 3196 | *
|
---|
| 3197 | * @param hDeadPid The PID of the dead process.
|
---|
| 3198 | */
|
---|
| 3199 | static void supdrvNtProtectUnprotectDeadProcess(HANDLE hDeadPid)
|
---|
| 3200 | {
|
---|
| 3201 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(hDeadPid);
|
---|
| 3202 | if (pNtProtect)
|
---|
| 3203 | {
|
---|
| 3204 | PSUPDRVNTPROTECT pNtChild = NULL;
|
---|
| 3205 |
|
---|
| 3206 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 3207 |
|
---|
| 3208 | /*
|
---|
| 3209 | * If this is an unconfirmed VM process, we must release the reference
|
---|
| 3210 | * the parent structure holds.
|
---|
| 3211 | */
|
---|
| 3212 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 3213 | {
|
---|
| 3214 | PSUPDRVNTPROTECT pNtParent = pNtProtect->u.pParent;
|
---|
| 3215 | AssertRelease(pNtParent); AssertRelease(pNtParent->u.pChild == pNtProtect);
|
---|
| 3216 | pNtParent->u.pChild = NULL;
|
---|
| 3217 | pNtProtect->u.pParent = NULL;
|
---|
| 3218 | pNtChild = pNtProtect;
|
---|
| 3219 | }
|
---|
| 3220 | /*
|
---|
| 3221 | * If this is a stub exitting before the VM process gets confirmed,
|
---|
| 3222 | * release the protection of the potential VM process as this is not
|
---|
| 3223 | * the prescribed behavior.
|
---|
| 3224 | */
|
---|
| 3225 | else if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 3226 | && pNtProtect->u.pChild)
|
---|
| 3227 | {
|
---|
| 3228 | pNtChild = pNtProtect->u.pChild;
|
---|
| 3229 | pNtProtect->u.pChild = NULL;
|
---|
| 3230 | pNtChild->u.pParent = NULL;
|
---|
| 3231 | pNtChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 3232 | }
|
---|
| 3233 |
|
---|
| 3234 | /*
|
---|
| 3235 | * Transition it to the dead state to prevent it from opening the
|
---|
| 3236 | * support driver again or be posthumously abused as a vm process parent.
|
---|
| 3237 | */
|
---|
| 3238 | if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 3239 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 3240 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 3241 | else if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 3242 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubSpawning
|
---|
| 3243 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubUnverified)
|
---|
| 3244 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_StubDead;
|
---|
| 3245 |
|
---|
| 3246 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3247 |
|
---|
| 3248 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 3249 | supdrvNtProtectRelease(pNtChild);
|
---|
| 3250 |
|
---|
| 3251 | /*
|
---|
| 3252 | * Do session cleanups.
|
---|
| 3253 | */
|
---|
| 3254 | AssertReturnVoid((HANDLE)(uintptr_t)RTProcSelf() == hDeadPid);
|
---|
| 3255 | if (g_pDevObjSys)
|
---|
| 3256 | {
|
---|
| 3257 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)g_pDevObjSys->DeviceExtension;
|
---|
| 3258 | PSUPDRVSESSION pSession = supdrvSessionHashTabLookup(pDevExt, (RTPROCESS)(uintptr_t)hDeadPid,
|
---|
| 3259 | RTR0ProcHandleSelf(), NULL);
|
---|
| 3260 | if (pSession)
|
---|
| 3261 | {
|
---|
| 3262 | supdrvSessionHashTabRemove(pDevExt, pSession, NULL);
|
---|
| 3263 | supdrvSessionRelease(pSession); /* Drops the reference from supdrvSessionHashTabLookup. */
|
---|
| 3264 | }
|
---|
| 3265 | }
|
---|
| 3266 | }
|
---|
| 3267 | }
|
---|
| 3268 |
|
---|
| 3269 |
|
---|
| 3270 | /**
|
---|
| 3271 | * Common worker for the process creation callback that verifies a new child
|
---|
| 3272 | * being created by the handle creation callback code.
|
---|
| 3273 | *
|
---|
| 3274 | * @param pNtStub The parent.
|
---|
| 3275 | * @param pNtVm The child.
|
---|
| 3276 | * @param fCallerChecks The result of any additional tests the caller made.
|
---|
| 3277 | * This is in order to avoid duplicating the failure
|
---|
| 3278 | * path code.
|
---|
| 3279 | */
|
---|
| 3280 | static void supdrvNtProtectVerifyNewChildProtection(PSUPDRVNTPROTECT pNtStub, PSUPDRVNTPROTECT pNtVm, bool fCallerChecks)
|
---|
| 3281 | {
|
---|
| 3282 | if ( fCallerChecks
|
---|
| 3283 | && pNtStub->enmProcessKind == kSupDrvNtProtectKind_StubParent
|
---|
| 3284 | && pNtVm->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 3285 | && pNtVm->u.pParent == pNtStub
|
---|
| 3286 | && pNtStub->u.pChild == pNtVm)
|
---|
| 3287 | {
|
---|
[52423] | 3288 | /* Fine, reset the CSRSS hack (fixes ViRobot APT Shield 2.0 issue). */
|
---|
| 3289 | pNtVm->fFirstProcessCreateHandle = true;
|
---|
[51770] | 3290 | return;
|
---|
| 3291 | }
|
---|
| 3292 |
|
---|
| 3293 | LogRel(("vboxdrv: Misdetected vm stub; hParentPid=%p hChildPid=%p\n", pNtStub->AvlCore.Key, pNtVm->AvlCore.Key));
|
---|
| 3294 | if (pNtStub->enmProcessKind != kSupDrvNtProtectKind_VmProcessConfirmed)
|
---|
| 3295 | supdrvNtProtectUnprotectDeadProcess(pNtVm->AvlCore.Key);
|
---|
| 3296 | }
|
---|
| 3297 |
|
---|
| 3298 |
|
---|
| 3299 | /**
|
---|
| 3300 | * Old style callback (since forever).
|
---|
| 3301 | *
|
---|
| 3302 | * @param hParentPid The parent PID.
|
---|
| 3303 | * @param hNewPid The PID of the new child.
|
---|
| 3304 | * @param fCreated TRUE if it's a creation notification,
|
---|
| 3305 | * FALSE if termination.
|
---|
| 3306 | * @remarks ASSUMES this arrives before the handle creation callback.
|
---|
| 3307 | */
|
---|
| 3308 | static VOID __stdcall
|
---|
| 3309 | supdrvNtProtectCallback_ProcessCreateNotify(HANDLE hParentPid, HANDLE hNewPid, BOOLEAN fCreated)
|
---|
| 3310 | {
|
---|
| 3311 | /*
|
---|
| 3312 | * Is it a new process that needs protection?
|
---|
| 3313 | */
|
---|
| 3314 | if (fCreated)
|
---|
| 3315 | {
|
---|
| 3316 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(hParentPid);
|
---|
| 3317 | if (pNtStub)
|
---|
| 3318 | {
|
---|
| 3319 | PSUPDRVNTPROTECT pNtVm = supdrvNtProtectLookup(hNewPid);
|
---|
| 3320 | if (!pNtVm)
|
---|
| 3321 | {
|
---|
| 3322 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, hParentPid, hNewPid))
|
---|
| 3323 | supdrvNtProtectProtectNewStubChild(pNtStub, hNewPid);
|
---|
| 3324 | }
|
---|
| 3325 | else
|
---|
| 3326 | {
|
---|
| 3327 | supdrvNtProtectVerifyNewChildProtection(pNtStub, pNtVm, true);
|
---|
| 3328 | supdrvNtProtectRelease(pNtVm);
|
---|
| 3329 | }
|
---|
| 3330 | supdrvNtProtectRelease(pNtStub);
|
---|
| 3331 | }
|
---|
| 3332 | }
|
---|
| 3333 | /*
|
---|
| 3334 | * Process termination, do clean ups.
|
---|
| 3335 | */
|
---|
| 3336 | else
|
---|
[53002] | 3337 | {
|
---|
[51770] | 3338 | supdrvNtProtectUnprotectDeadProcess(hNewPid);
|
---|
[53002] | 3339 | supdrvNtErrorInfoCleanupProcess(hNewPid);
|
---|
| 3340 | }
|
---|
[51770] | 3341 | }
|
---|
| 3342 |
|
---|
| 3343 |
|
---|
| 3344 | /**
|
---|
| 3345 | * New style callback (Vista SP1+ / w2k8).
|
---|
| 3346 | *
|
---|
| 3347 | * @param pNewProcess The new process.
|
---|
| 3348 | * @param hNewPid The PID of the new process.
|
---|
| 3349 | * @param pInfo Process creation details. NULL if process
|
---|
| 3350 | * termination notification.
|
---|
| 3351 | * @remarks ASSUMES this arrives before the handle creation callback.
|
---|
| 3352 | */
|
---|
| 3353 | static VOID __stdcall
|
---|
| 3354 | supdrvNtProtectCallback_ProcessCreateNotifyEx(PEPROCESS pNewProcess, HANDLE hNewPid, PPS_CREATE_NOTIFY_INFO pInfo)
|
---|
| 3355 | {
|
---|
[62677] | 3356 | RT_NOREF1(pNewProcess);
|
---|
| 3357 |
|
---|
[51770] | 3358 | /*
|
---|
| 3359 | * Is it a new process that needs protection?
|
---|
| 3360 | */
|
---|
| 3361 | if (pInfo)
|
---|
| 3362 | {
|
---|
| 3363 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(pInfo->CreatingThreadId.UniqueProcess);
|
---|
| 3364 |
|
---|
| 3365 | Log(("vboxdrv/NewProcessEx: ctx=%04zx/%p pid=%04zx ppid=%04zx ctor=%04zx/%04zx rcNt=%#x %.*ls\n",
|
---|
| 3366 | PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
| 3367 | hNewPid, pInfo->ParentProcessId,
|
---|
| 3368 | pInfo->CreatingThreadId.UniqueProcess, pInfo->CreatingThreadId.UniqueThread, pInfo->CreationStatus,
|
---|
| 3369 | pInfo->FileOpenNameAvailable && pInfo->ImageFileName ? (size_t)pInfo->ImageFileName->Length / 2 : 0,
|
---|
| 3370 | pInfo->FileOpenNameAvailable && pInfo->ImageFileName ? pInfo->ImageFileName->Buffer : NULL));
|
---|
| 3371 |
|
---|
| 3372 | if (pNtStub)
|
---|
| 3373 | {
|
---|
| 3374 | PSUPDRVNTPROTECT pNtVm = supdrvNtProtectLookup(hNewPid);
|
---|
| 3375 | if (!pNtVm)
|
---|
| 3376 | {
|
---|
| 3377 | /* Parent must be creator. */
|
---|
| 3378 | if (pInfo->CreatingThreadId.UniqueProcess == pInfo->ParentProcessId)
|
---|
| 3379 | {
|
---|
| 3380 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, pInfo->ParentProcessId, hNewPid))
|
---|
| 3381 | supdrvNtProtectProtectNewStubChild(pNtStub, hNewPid);
|
---|
| 3382 | }
|
---|
| 3383 | }
|
---|
| 3384 | else
|
---|
| 3385 | {
|
---|
| 3386 | /* Parent must be creator (as above). */
|
---|
| 3387 | supdrvNtProtectVerifyNewChildProtection(pNtStub, pNtVm,
|
---|
| 3388 | pInfo->CreatingThreadId.UniqueProcess == pInfo->ParentProcessId);
|
---|
| 3389 | supdrvNtProtectRelease(pNtVm);
|
---|
| 3390 | }
|
---|
| 3391 | supdrvNtProtectRelease(pNtStub);
|
---|
| 3392 | }
|
---|
| 3393 | }
|
---|
| 3394 | /*
|
---|
| 3395 | * Process termination, do clean ups.
|
---|
| 3396 | */
|
---|
| 3397 | else
|
---|
[53002] | 3398 | {
|
---|
[51770] | 3399 | supdrvNtProtectUnprotectDeadProcess(hNewPid);
|
---|
[53002] | 3400 | supdrvNtErrorInfoCleanupProcess(hNewPid);
|
---|
| 3401 | }
|
---|
[51770] | 3402 | }
|
---|
| 3403 |
|
---|
| 3404 | /** @} */
|
---|
| 3405 |
|
---|
| 3406 |
|
---|
| 3407 | /** @name Process Handle Callbacks.
|
---|
| 3408 | * @{ */
|
---|
| 3409 |
|
---|
| 3410 | /** Process rights that we allow for handles to stub and VM processes. */
|
---|
| 3411 | # define SUPDRV_NT_ALLOW_PROCESS_RIGHTS \
|
---|
| 3412 | ( PROCESS_TERMINATE \
|
---|
| 3413 | | PROCESS_VM_READ \
|
---|
| 3414 | | PROCESS_QUERY_INFORMATION \
|
---|
| 3415 | | PROCESS_QUERY_LIMITED_INFORMATION \
|
---|
| 3416 | | PROCESS_SUSPEND_RESUME \
|
---|
| 3417 | | DELETE \
|
---|
| 3418 | | READ_CONTROL \
|
---|
| 3419 | | SYNCHRONIZE)
|
---|
| 3420 |
|
---|
| 3421 | /** Evil process rights. */
|
---|
| 3422 | # define SUPDRV_NT_EVIL_PROCESS_RIGHTS \
|
---|
| 3423 | ( PROCESS_CREATE_THREAD \
|
---|
| 3424 | | PROCESS_SET_SESSIONID /*?*/ \
|
---|
| 3425 | | PROCESS_VM_OPERATION \
|
---|
| 3426 | | PROCESS_VM_WRITE \
|
---|
| 3427 | | PROCESS_DUP_HANDLE \
|
---|
| 3428 | | PROCESS_CREATE_PROCESS /*?*/ \
|
---|
| 3429 | | PROCESS_SET_QUOTA /*?*/ \
|
---|
| 3430 | | PROCESS_SET_INFORMATION \
|
---|
| 3431 | | PROCESS_SET_LIMITED_INFORMATION /*?*/ \
|
---|
| 3432 | | 0)
|
---|
| 3433 | AssertCompile((SUPDRV_NT_ALLOW_PROCESS_RIGHTS & SUPDRV_NT_EVIL_PROCESS_RIGHTS) == 0);
|
---|
| 3434 |
|
---|
| 3435 |
|
---|
| 3436 | static OB_PREOP_CALLBACK_STATUS __stdcall
|
---|
| 3437 | supdrvNtProtectCallback_ProcessHandlePre(PVOID pvUser, POB_PRE_OPERATION_INFORMATION pOpInfo)
|
---|
| 3438 | {
|
---|
[62677] | 3439 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 3440 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 3441 | Assert(pOpInfo->ObjectType == *PsProcessType);
|
---|
| 3442 |
|
---|
| 3443 | /*
|
---|
| 3444 | * Protected? Kludge required for NtOpenProcess calls comming in before
|
---|
| 3445 | * the create process hook triggers on Windows 8.1 (possibly others too).
|
---|
| 3446 | */
|
---|
| 3447 | HANDLE hObjPid = PsGetProcessId((PEPROCESS)pOpInfo->Object);
|
---|
| 3448 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(hObjPid);
|
---|
| 3449 | if (!pNtProtect)
|
---|
| 3450 | {
|
---|
| 3451 | HANDLE hParentPid = PsGetProcessInheritedFromUniqueProcessId((PEPROCESS)pOpInfo->Object);
|
---|
| 3452 | PSUPDRVNTPROTECT pNtStub = supdrvNtProtectLookup(hParentPid);
|
---|
| 3453 | if (pNtStub)
|
---|
| 3454 | {
|
---|
| 3455 | if (supdrvNtProtectIsSpawningStubProcess(pNtStub, hParentPid, hObjPid))
|
---|
| 3456 | {
|
---|
| 3457 | supdrvNtProtectProtectNewStubChild(pNtStub, hObjPid);
|
---|
| 3458 | pNtProtect = supdrvNtProtectLookup(hObjPid);
|
---|
| 3459 | }
|
---|
| 3460 | supdrvNtProtectRelease(pNtStub);
|
---|
| 3461 | }
|
---|
| 3462 | }
|
---|
| 3463 | pOpInfo->CallContext = pNtProtect; /* Just for reference. */
|
---|
| 3464 | if (pNtProtect)
|
---|
| 3465 | {
|
---|
| 3466 | /*
|
---|
| 3467 | * Ok, it's a protected process. Strip rights as required or possible.
|
---|
| 3468 | */
|
---|
| 3469 | static ACCESS_MASK const s_fCsrssStupidDesires = 0x1fffff;
|
---|
| 3470 | ACCESS_MASK fAllowedRights = SUPDRV_NT_ALLOW_PROCESS_RIGHTS;
|
---|
| 3471 |
|
---|
| 3472 | if (pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE)
|
---|
| 3473 | {
|
---|
| 3474 | /* Don't restrict the process accessing itself. */
|
---|
| 3475 | if ((PEPROCESS)pOpInfo->Object == PsGetCurrentProcess())
|
---|
| 3476 | {
|
---|
| 3477 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3478 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 3479 |
|
---|
[52423] | 3480 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 3481 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3482 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 3483 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3484 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3485 | }
|
---|
[52387] | 3486 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 3487 | /* Allow debuggers full access. */
|
---|
| 3488 | else if (supdrvNtProtectIsWhitelistedDebugger(PsGetCurrentProcess()))
|
---|
| 3489 | {
|
---|
| 3490 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3491 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 3492 |
|
---|
[52423] | 3493 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s [debugger]\n",
|
---|
| 3494 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[52387] | 3495 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 3496 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3497 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3498 | }
|
---|
| 3499 | #endif
|
---|
[51770] | 3500 | else
|
---|
| 3501 | {
|
---|
[57303] | 3502 | ACCESS_MASK const fDesiredAccess = pOpInfo->Parameters->CreateHandleInformation.DesiredAccess;
|
---|
| 3503 |
|
---|
[51770] | 3504 | /* Special case 1 on Vista, 7 & 8:
|
---|
| 3505 | The CreateProcess code passes the handle over to CSRSS.EXE
|
---|
| 3506 | and the code inBaseSrvCreateProcess will duplicate the
|
---|
| 3507 | handle with 0x1fffff as access mask. NtDuplicateObject will
|
---|
| 3508 | fail this call before it ever gets down here.
|
---|
| 3509 |
|
---|
| 3510 | Special case 2 on 8.1:
|
---|
| 3511 | The CreateProcess code requires additional rights for
|
---|
| 3512 | something, we'll drop these in the stub code. */
|
---|
| 3513 | if ( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 3514 | && pNtProtect->fFirstProcessCreateHandle
|
---|
[52135] | 3515 | && pOpInfo->KernelHandle == 0
|
---|
[52425] | 3516 | && pNtProtect->hParentPid == PsGetProcessId(PsGetCurrentProcess())
|
---|
| 3517 | && ExGetPreviousMode() != KernelMode)
|
---|
[51770] | 3518 | {
|
---|
| 3519 | if ( !pOpInfo->KernelHandle
|
---|
[57303] | 3520 | && fDesiredAccess == s_fCsrssStupidDesires)
|
---|
[51770] | 3521 | {
|
---|
| 3522 | if (g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3))
|
---|
| 3523 | fAllowedRights |= s_fCsrssStupidDesires;
|
---|
| 3524 | else
|
---|
| 3525 | fAllowedRights = fAllowedRights
|
---|
| 3526 | | PROCESS_VM_OPERATION
|
---|
| 3527 | | PROCESS_VM_WRITE
|
---|
| 3528 | | PROCESS_SET_INFORMATION
|
---|
| 3529 | | PROCESS_SET_LIMITED_INFORMATION
|
---|
| 3530 | | 0;
|
---|
| 3531 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3532 | }
|
---|
| 3533 | pNtProtect->fFirstProcessCreateHandle = false;
|
---|
| 3534 | }
|
---|
| 3535 |
|
---|
| 3536 | /* Special case 3 on 8.1:
|
---|
| 3537 | The interaction between the CreateProcess code and CSRSS.EXE
|
---|
| 3538 | has changed to the better with Windows 8.1. CSRSS.EXE no
|
---|
| 3539 | longer duplicates the process (thread too) handle, but opens
|
---|
| 3540 | it, thus allowing us to do our job. */
|
---|
| 3541 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 3542 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 3543 | && pNtProtect->fCsrssFirstProcessCreateHandle
|
---|
[52135] | 3544 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 3545 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 3546 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
[51770] | 3547 | {
|
---|
| 3548 | pNtProtect->fCsrssFirstProcessCreateHandle = false;
|
---|
[57303] | 3549 | if (fDesiredAccess == s_fCsrssStupidDesires)
|
---|
[51770] | 3550 | {
|
---|
| 3551 | /* Not needed: PROCESS_CREATE_THREAD, PROCESS_SET_SESSIONID,
|
---|
| 3552 | PROCESS_CREATE_PROCESS */
|
---|
| 3553 | fAllowedRights = fAllowedRights
|
---|
| 3554 | | PROCESS_VM_OPERATION
|
---|
| 3555 | | PROCESS_VM_WRITE
|
---|
| 3556 | | PROCESS_DUP_HANDLE /* Needed for CreateProcess/VBoxTestOGL. */
|
---|
| 3557 | | 0;
|
---|
| 3558 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3559 | }
|
---|
| 3560 | }
|
---|
| 3561 |
|
---|
| 3562 | /* Special case 4, Windows 7, Vista, possibly 8, but not 8.1:
|
---|
| 3563 | The Themes service requires PROCESS_DUP_HANDLE access to our
|
---|
| 3564 | process or we won't get any menus and dialogs will be half
|
---|
| 3565 | unreadable. This is _very_ unfortunate and more work will
|
---|
| 3566 | go into making this more secure. */
|
---|
| 3567 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 0)
|
---|
| 3568 | && g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 2)
|
---|
[57303] | 3569 | && fDesiredAccess == 0x1478 /* 6.1.7600.16385 (win7_rtm.090713-1255) */
|
---|
[51770] | 3570 | && pNtProtect->fThemesFirstProcessCreateHandle
|
---|
[52135] | 3571 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 3572 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 3573 | && supdrvNtProtectIsFrigginThemesService(pNtProtect, PsGetCurrentProcess()) )
|
---|
[51770] | 3574 | {
|
---|
| 3575 | pNtProtect->fThemesFirstProcessCreateHandle = true; /* Only once! */
|
---|
| 3576 | fAllowedRights |= PROCESS_DUP_HANDLE;
|
---|
| 3577 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3578 | }
|
---|
| 3579 |
|
---|
[57303] | 3580 | /* Special case 6a, Windows 10+: AudioDG.exe opens the process with the
|
---|
| 3581 | PROCESS_SET_LIMITED_INFORMATION right. It seems like it need it for
|
---|
| 3582 | some myserious and weirdly placed cpu set management of our process.
|
---|
| 3583 | I'd love to understand what that's all about...
|
---|
| 3584 | Currently playing safe and only grand this right, however limited, to
|
---|
| 3585 | audiodg.exe. */
|
---|
| 3586 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(10, 0)
|
---|
| 3587 | && ( fDesiredAccess == PROCESS_SET_LIMITED_INFORMATION
|
---|
| 3588 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_LIMITED_INFORMATION) /* expected fix #1 */
|
---|
| 3589 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_INFORMATION) /* expected fix #2 */
|
---|
| 3590 | )
|
---|
| 3591 | && pOpInfo->KernelHandle == 0
|
---|
| 3592 | && ExGetPreviousMode() == UserMode
|
---|
| 3593 | && supdrvNtProtectIsSystem32ProcessMatch(PsGetCurrentProcess(), "audiodg.exe") )
|
---|
| 3594 | {
|
---|
| 3595 | fAllowedRights |= PROCESS_SET_LIMITED_INFORMATION;
|
---|
| 3596 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3597 | }
|
---|
| 3598 |
|
---|
[52425] | 3599 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p wants %#x to %p/pid=%04zx [%d], allow %#x => %#x; %s [prev=%#x]\n",
|
---|
[52423] | 3600 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[57303] | 3601 | fDesiredAccess, pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3602 | fAllowedRights, fDesiredAccess & fAllowedRights,
|
---|
[52425] | 3603 | PsGetProcessImageFileName(PsGetCurrentProcess()), ExGetPreviousMode() ));
|
---|
[51770] | 3604 |
|
---|
| 3605 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 3606 | }
|
---|
| 3607 | }
|
---|
| 3608 | else
|
---|
| 3609 | {
|
---|
| 3610 | /* Don't restrict the process accessing itself. */
|
---|
| 3611 | if ( (PEPROCESS)pOpInfo->Object == PsGetCurrentProcess()
|
---|
| 3612 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == pOpInfo->Object)
|
---|
| 3613 | {
|
---|
| 3614 | Log(("vboxdrv/ProcessHandlePre: ctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 3615 | PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
| 3616 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 3617 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 3618 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 3619 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 3620 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3621 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3622 |
|
---|
| 3623 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3624 | }
|
---|
| 3625 | else
|
---|
| 3626 | {
|
---|
[57303] | 3627 | ACCESS_MASK const fDesiredAccess = pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess;
|
---|
| 3628 |
|
---|
[51770] | 3629 | /* Special case 5 on Vista, 7 & 8:
|
---|
| 3630 | This is the CSRSS.EXE end of special case #1. */
|
---|
| 3631 | if ( g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 3632 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
[52905] | 3633 | && pNtProtect->cCsrssFirstProcessDuplicateHandle > 0
|
---|
[52135] | 3634 | && pOpInfo->KernelHandle == 0
|
---|
[57303] | 3635 | && fDesiredAccess == s_fCsrssStupidDesires
|
---|
[51770] | 3636 | && pNtProtect->hParentPid
|
---|
| 3637 | == PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess)
|
---|
| 3638 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == PsGetCurrentProcess()
|
---|
[52905] | 3639 | && ExGetPreviousMode() == UserMode
|
---|
| 3640 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()))
|
---|
[51770] | 3641 | {
|
---|
[52905] | 3642 | if (ASMAtomicDecS32(&pNtProtect->cCsrssFirstProcessDuplicateHandle) >= 0)
|
---|
[51770] | 3643 | {
|
---|
| 3644 | /* Not needed: PROCESS_CREATE_THREAD, PROCESS_SET_SESSIONID,
|
---|
| 3645 | PROCESS_CREATE_PROCESS, PROCESS_DUP_HANDLE */
|
---|
| 3646 | fAllowedRights = fAllowedRights
|
---|
| 3647 | | PROCESS_VM_OPERATION
|
---|
| 3648 | | PROCESS_VM_WRITE
|
---|
| 3649 | | PROCESS_DUP_HANDLE /* Needed for launching VBoxTestOGL. */
|
---|
| 3650 | | 0;
|
---|
| 3651 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3652 | }
|
---|
| 3653 | }
|
---|
| 3654 |
|
---|
[57303] | 3655 | /* Special case 6b, Windows 10+: AudioDG.exe duplicates the handle it opened above. */
|
---|
| 3656 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(10, 0)
|
---|
| 3657 | && ( fDesiredAccess == PROCESS_SET_LIMITED_INFORMATION
|
---|
| 3658 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_LIMITED_INFORMATION) /* expected fix #1 */
|
---|
| 3659 | || fDesiredAccess == (PROCESS_SET_LIMITED_INFORMATION | PROCESS_QUERY_INFORMATION) /* expected fix #2 */
|
---|
| 3660 | )
|
---|
| 3661 | && pOpInfo->KernelHandle == 0
|
---|
| 3662 | && ExGetPreviousMode() == UserMode
|
---|
| 3663 | && supdrvNtProtectIsSystem32ProcessMatch(PsGetCurrentProcess(), "audiodg.exe") )
|
---|
| 3664 | {
|
---|
| 3665 | fAllowedRights |= PROCESS_SET_LIMITED_INFORMATION;
|
---|
| 3666 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3667 | }
|
---|
| 3668 |
|
---|
[52423] | 3669 | Log(("vboxdrv/ProcessHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] %s\n",
|
---|
| 3670 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3671 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 3672 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 3673 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
[57303] | 3674 | fDesiredAccess,
|
---|
[51770] | 3675 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3676 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3677 |
|
---|
| 3678 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 3679 | }
|
---|
| 3680 | }
|
---|
| 3681 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 3682 | }
|
---|
| 3683 |
|
---|
| 3684 | return OB_PREOP_SUCCESS;
|
---|
| 3685 | }
|
---|
| 3686 |
|
---|
| 3687 |
|
---|
| 3688 | static VOID __stdcall
|
---|
| 3689 | supdrvNtProtectCallback_ProcessHandlePost(PVOID pvUser, POB_POST_OPERATION_INFORMATION pOpInfo)
|
---|
| 3690 | {
|
---|
[62677] | 3691 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 3692 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 3693 | Assert(pOpInfo->ObjectType == *PsProcessType);
|
---|
| 3694 |
|
---|
| 3695 | if ( pOpInfo->CallContext
|
---|
| 3696 | && NT_SUCCESS(pOpInfo->ReturnStatus))
|
---|
| 3697 | {
|
---|
| 3698 | ACCESS_MASK const fGrantedAccess = pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE
|
---|
| 3699 | ? pOpInfo->Parameters->CreateHandleInformation.GrantedAccess
|
---|
| 3700 | : pOpInfo->Parameters->DuplicateHandleInformation.GrantedAccess;
|
---|
| 3701 | AssertReleaseMsg( !(fGrantedAccess & ~( SUPDRV_NT_ALLOW_PROCESS_RIGHTS
|
---|
| 3702 | | WRITE_OWNER | WRITE_DAC /* these two might be forced upon us */
|
---|
| 3703 | | PROCESS_UNKNOWN_4000 /* Seen set on win 8.1 */
|
---|
| 3704 | /*| PROCESS_UNKNOWN_8000 */ ) )
|
---|
| 3705 | || pOpInfo->KernelHandle,
|
---|
| 3706 | ("GrantedAccess=%#x - we allow %#x - we did not allow %#x\n",
|
---|
| 3707 | fGrantedAccess, SUPDRV_NT_ALLOW_PROCESS_RIGHTS, fGrantedAccess & ~SUPDRV_NT_ALLOW_PROCESS_RIGHTS));
|
---|
| 3708 | }
|
---|
| 3709 | }
|
---|
| 3710 |
|
---|
| 3711 | # undef SUPDRV_NT_ALLOW_PROCESS_RIGHTS
|
---|
| 3712 |
|
---|
| 3713 | /** @} */
|
---|
| 3714 |
|
---|
| 3715 |
|
---|
| 3716 | /** @name Thread Handle Callbacks
|
---|
| 3717 | * @{ */
|
---|
| 3718 |
|
---|
| 3719 | /* From ntifs.h */
|
---|
| 3720 | extern "C" NTKERNELAPI PEPROCESS __stdcall IoThreadToProcess(PETHREAD);
|
---|
| 3721 |
|
---|
| 3722 | /** Thread rights that we allow for handles to stub and VM processes. */
|
---|
| 3723 | # define SUPDRV_NT_ALLOWED_THREAD_RIGHTS \
|
---|
| 3724 | ( THREAD_TERMINATE \
|
---|
| 3725 | | THREAD_GET_CONTEXT \
|
---|
| 3726 | | THREAD_QUERY_INFORMATION \
|
---|
| 3727 | | THREAD_QUERY_LIMITED_INFORMATION \
|
---|
| 3728 | | DELETE \
|
---|
| 3729 | | READ_CONTROL \
|
---|
| 3730 | | SYNCHRONIZE)
|
---|
| 3731 | /** @todo consider THREAD_SET_LIMITED_INFORMATION & THREAD_RESUME */
|
---|
| 3732 |
|
---|
| 3733 | /** Evil thread rights.
|
---|
| 3734 | * @remarks THREAD_RESUME is not included as it seems to be forced upon us by
|
---|
| 3735 | * Windows 8.1, at least for some processes. We dont' actively
|
---|
| 3736 | * allow it though, just tollerate it when forced to. */
|
---|
| 3737 | # define SUPDRV_NT_EVIL_THREAD_RIGHTS \
|
---|
| 3738 | ( THREAD_SUSPEND_RESUME \
|
---|
| 3739 | | THREAD_SET_CONTEXT \
|
---|
| 3740 | | THREAD_SET_INFORMATION \
|
---|
| 3741 | | THREAD_SET_LIMITED_INFORMATION /*?*/ \
|
---|
| 3742 | | THREAD_SET_THREAD_TOKEN /*?*/ \
|
---|
| 3743 | | THREAD_IMPERSONATE /*?*/ \
|
---|
| 3744 | | THREAD_DIRECT_IMPERSONATION /*?*/ \
|
---|
| 3745 | /*| THREAD_RESUME - see remarks. */ \
|
---|
| 3746 | | 0)
|
---|
| 3747 | AssertCompile((SUPDRV_NT_EVIL_THREAD_RIGHTS & SUPDRV_NT_ALLOWED_THREAD_RIGHTS) == 0);
|
---|
| 3748 |
|
---|
| 3749 |
|
---|
| 3750 | static OB_PREOP_CALLBACK_STATUS __stdcall
|
---|
| 3751 | supdrvNtProtectCallback_ThreadHandlePre(PVOID pvUser, POB_PRE_OPERATION_INFORMATION pOpInfo)
|
---|
| 3752 | {
|
---|
[62677] | 3753 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 3754 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 3755 | Assert(pOpInfo->ObjectType == *PsThreadType);
|
---|
| 3756 |
|
---|
| 3757 | PEPROCESS pProcess = IoThreadToProcess((PETHREAD)pOpInfo->Object);
|
---|
| 3758 | PSUPDRVNTPROTECT pNtProtect = supdrvNtProtectLookup(PsGetProcessId(pProcess));
|
---|
| 3759 | pOpInfo->CallContext = pNtProtect; /* Just for reference. */
|
---|
| 3760 | if (pNtProtect)
|
---|
| 3761 | {
|
---|
| 3762 | static ACCESS_MASK const s_fCsrssStupidDesires = 0x1fffff;
|
---|
| 3763 | ACCESS_MASK fAllowedRights = SUPDRV_NT_ALLOWED_THREAD_RIGHTS;
|
---|
| 3764 |
|
---|
| 3765 | if (pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE)
|
---|
| 3766 | {
|
---|
| 3767 | /* Don't restrict the process accessing its own threads. */
|
---|
| 3768 | if (pProcess == PsGetCurrentProcess())
|
---|
| 3769 | {
|
---|
[52423] | 3770 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] self\n",
|
---|
| 3771 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3772 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 3773 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind));
|
---|
| 3774 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3775 | pNtProtect->fFirstThreadCreateHandle = false;
|
---|
| 3776 | }
|
---|
[52387] | 3777 | #ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 3778 | /* Allow debuggers full access. */
|
---|
| 3779 | else if (supdrvNtProtectIsWhitelistedDebugger(PsGetCurrentProcess()))
|
---|
| 3780 | {
|
---|
[52423] | 3781 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d] %s [debugger]\n",
|
---|
| 3782 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[52387] | 3783 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 3784 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3785 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3786 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3787 | }
|
---|
| 3788 | #endif
|
---|
[51770] | 3789 | else
|
---|
| 3790 | {
|
---|
| 3791 | /* Special case 1 on Vista, 7, 8:
|
---|
| 3792 | The CreateProcess code passes the handle over to CSRSS.EXE
|
---|
| 3793 | and the code inBaseSrvCreateProcess will duplicate the
|
---|
| 3794 | handle with 0x1fffff as access mask. NtDuplicateObject will
|
---|
| 3795 | fail this call before it ever gets down here. */
|
---|
| 3796 | if ( g_uNtVerCombined < SUP_MAKE_NT_VER_SIMPLE(6, 3)
|
---|
| 3797 | && pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed
|
---|
| 3798 | && pNtProtect->fFirstThreadCreateHandle
|
---|
[52135] | 3799 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 3800 | && ExGetPreviousMode() == UserMode
|
---|
[52135] | 3801 | && pNtProtect->hParentPid == PsGetProcessId(PsGetCurrentProcess()) )
|
---|
[51770] | 3802 | {
|
---|
| 3803 | if ( !pOpInfo->KernelHandle
|
---|
| 3804 | && pOpInfo->Parameters->CreateHandleInformation.DesiredAccess == s_fCsrssStupidDesires)
|
---|
| 3805 | {
|
---|
| 3806 | fAllowedRights |= s_fCsrssStupidDesires;
|
---|
| 3807 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3808 | }
|
---|
| 3809 | pNtProtect->fFirstThreadCreateHandle = false;
|
---|
| 3810 | }
|
---|
| 3811 |
|
---|
| 3812 | /* Special case 2 on 8.1, possibly also Vista, 7, 8:
|
---|
| 3813 | When creating a process like VBoxTestOGL from the VM process,
|
---|
| 3814 | CSRSS.EXE will try talk to the calling thread and, it
|
---|
| 3815 | appears, impersonate it. We unfortunately need to allow
|
---|
| 3816 | this or there will be no 3D support. Typical DbgPrint:
|
---|
| 3817 | "SXS: BasepCreateActCtx() Calling csrss server failed. Status = 0xc00000a5" */
|
---|
| 3818 | SUPDRVNTPROTECTKIND enmProcessKind;
|
---|
| 3819 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 0, 0, 0)
|
---|
| 3820 | && ( (enmProcessKind = pNtProtect->enmProcessKind) == kSupDrvNtProtectKind_VmProcessConfirmed
|
---|
| 3821 | || enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
[52135] | 3822 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 3823 | && ExGetPreviousMode() == UserMode
|
---|
[51770] | 3824 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
| 3825 | {
|
---|
| 3826 | fAllowedRights |= THREAD_IMPERSONATE;
|
---|
| 3827 | fAllowedRights |= THREAD_DIRECT_IMPERSONATION;
|
---|
| 3828 | //fAllowedRights |= THREAD_SET_LIMITED_INFORMATION; - try without this one
|
---|
| 3829 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3830 | }
|
---|
| 3831 |
|
---|
[52425] | 3832 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p wants %#x to %p in pid=%04zx [%d], allow %#x => %#x; %s [prev=%#x]\n",
|
---|
[52423] | 3833 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3834 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess,
|
---|
| 3835 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind, fAllowedRights,
|
---|
| 3836 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess & fAllowedRights,
|
---|
[52425] | 3837 | PsGetProcessImageFileName(PsGetCurrentProcess()), ExGetPreviousMode()));
|
---|
[51770] | 3838 |
|
---|
| 3839 | pOpInfo->Parameters->CreateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 3840 | }
|
---|
| 3841 | }
|
---|
| 3842 | else
|
---|
| 3843 | {
|
---|
| 3844 | /* Don't restrict the process accessing its own threads. */
|
---|
| 3845 | if ( pProcess == PsGetCurrentProcess()
|
---|
| 3846 | && (PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == pProcess)
|
---|
| 3847 | {
|
---|
[52423] | 3848 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d] self\n",
|
---|
| 3849 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3850 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 3851 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 3852 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 3853 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 3854 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind,
|
---|
| 3855 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3856 | pOpInfo->CallContext = NULL; /* don't assert */
|
---|
| 3857 | }
|
---|
| 3858 | else
|
---|
| 3859 | {
|
---|
| 3860 | /* Special case 3 on Vista, 7, 8:
|
---|
| 3861 | This is the follow up to special case 1. */
|
---|
| 3862 | SUPDRVNTPROTECTKIND enmProcessKind;
|
---|
| 3863 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 0, 0, 0)
|
---|
| 3864 | && ( (enmProcessKind = pNtProtect->enmProcessKind) == kSupDrvNtProtectKind_VmProcessConfirmed
|
---|
| 3865 | || enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 3866 | && pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess == PsGetCurrentProcess()
|
---|
[52135] | 3867 | && pOpInfo->KernelHandle == 0
|
---|
[52905] | 3868 | && ExGetPreviousMode() == UserMode
|
---|
[51770] | 3869 | && supdrvNtProtectIsAssociatedCsrss(pNtProtect, PsGetCurrentProcess()) )
|
---|
| 3870 | {
|
---|
| 3871 | fAllowedRights |= THREAD_IMPERSONATE;
|
---|
| 3872 | fAllowedRights |= THREAD_DIRECT_IMPERSONATION;
|
---|
| 3873 | //fAllowedRights |= THREAD_SET_LIMITED_INFORMATION; - try without this one
|
---|
| 3874 | pOpInfo->CallContext = NULL; /* don't assert this. */
|
---|
| 3875 | }
|
---|
| 3876 |
|
---|
[52423] | 3877 | Log(("vboxdrv/ThreadHandlePre: %sctx=%04zx/%p[%p] dup from %04zx/%p with %#x to %p in pid=%04zx [%d], allow %#x => %#x; %s\n",
|
---|
| 3878 | pOpInfo->KernelHandle ? "k" : "", PsGetProcessId(PsGetCurrentProcess()), PsGetCurrentProcess(),
|
---|
[51770] | 3879 | pOpInfo->Parameters->DuplicateHandleInformation.TargetProcess,
|
---|
| 3880 | PsGetProcessId((PEPROCESS)pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess),
|
---|
| 3881 | pOpInfo->Parameters->DuplicateHandleInformation.SourceProcess,
|
---|
| 3882 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess,
|
---|
| 3883 | pOpInfo->Object, pNtProtect->AvlCore.Key, pNtProtect->enmProcessKind, fAllowedRights,
|
---|
| 3884 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess & fAllowedRights,
|
---|
| 3885 | PsGetProcessImageFileName(PsGetCurrentProcess()) ));
|
---|
| 3886 |
|
---|
| 3887 | pOpInfo->Parameters->DuplicateHandleInformation.DesiredAccess &= fAllowedRights;
|
---|
| 3888 | }
|
---|
| 3889 | }
|
---|
| 3890 |
|
---|
| 3891 | supdrvNtProtectRelease(pNtProtect);
|
---|
| 3892 | }
|
---|
| 3893 |
|
---|
| 3894 | return OB_PREOP_SUCCESS;
|
---|
| 3895 | }
|
---|
| 3896 |
|
---|
| 3897 |
|
---|
| 3898 | static VOID __stdcall
|
---|
| 3899 | supdrvNtProtectCallback_ThreadHandlePost(PVOID pvUser, POB_POST_OPERATION_INFORMATION pOpInfo)
|
---|
| 3900 | {
|
---|
[62677] | 3901 | Assert(pvUser == NULL); RT_NOREF1(pvUser);
|
---|
[51770] | 3902 | Assert(pOpInfo->Operation == OB_OPERATION_HANDLE_CREATE || pOpInfo->Operation == OB_OPERATION_HANDLE_DUPLICATE);
|
---|
| 3903 | Assert(pOpInfo->ObjectType == *PsThreadType);
|
---|
| 3904 |
|
---|
| 3905 | if ( pOpInfo->CallContext
|
---|
| 3906 | && NT_SUCCESS(pOpInfo->ReturnStatus))
|
---|
| 3907 | {
|
---|
| 3908 | ACCESS_MASK const fGrantedAccess = pOpInfo->Parameters->CreateHandleInformation.GrantedAccess;
|
---|
| 3909 | AssertReleaseMsg( !(fGrantedAccess & ~( SUPDRV_NT_ALLOWED_THREAD_RIGHTS
|
---|
| 3910 | | WRITE_OWNER | WRITE_DAC /* these two might be forced upon us */
|
---|
| 3911 | | THREAD_RESUME /* This seems to be force upon us too with 8.1. */
|
---|
| 3912 | ) )
|
---|
| 3913 | || pOpInfo->KernelHandle,
|
---|
| 3914 | ("GrantedAccess=%#x - we allow %#x - we did not allow %#x\n",
|
---|
| 3915 | fGrantedAccess, SUPDRV_NT_ALLOWED_THREAD_RIGHTS, fGrantedAccess & ~SUPDRV_NT_ALLOWED_THREAD_RIGHTS));
|
---|
| 3916 | }
|
---|
| 3917 | }
|
---|
| 3918 |
|
---|
| 3919 | # undef SUPDRV_NT_ALLOWED_THREAD_RIGHTS
|
---|
| 3920 |
|
---|
| 3921 | /** @} */
|
---|
| 3922 |
|
---|
| 3923 |
|
---|
| 3924 | /**
|
---|
| 3925 | * Creates a new process protection structure.
|
---|
| 3926 | *
|
---|
| 3927 | * @returns VBox status code.
|
---|
| 3928 | * @param ppNtProtect Where to return the pointer to the structure
|
---|
| 3929 | * on success.
|
---|
| 3930 | * @param hPid The process ID of the process to protect.
|
---|
| 3931 | * @param enmProcessKind The kind of process we're protecting.
|
---|
| 3932 | * @param fLink Whether to link the structure into the tree.
|
---|
| 3933 | */
|
---|
| 3934 | static int supdrvNtProtectCreate(PSUPDRVNTPROTECT *ppNtProtect, HANDLE hPid, SUPDRVNTPROTECTKIND enmProcessKind, bool fLink)
|
---|
| 3935 | {
|
---|
| 3936 | AssertReturn(g_hNtProtectLock != NIL_RTSPINLOCK, VERR_WRONG_ORDER);
|
---|
| 3937 |
|
---|
| 3938 | PSUPDRVNTPROTECT pNtProtect = (PSUPDRVNTPROTECT)RTMemAllocZ(sizeof(*pNtProtect));
|
---|
| 3939 | if (!pNtProtect)
|
---|
| 3940 | return VERR_NO_MEMORY;
|
---|
| 3941 |
|
---|
| 3942 | pNtProtect->AvlCore.Key = hPid;
|
---|
| 3943 | pNtProtect->u32Magic = SUPDRVNTPROTECT_MAGIC;
|
---|
| 3944 | pNtProtect->cRefs = 1;
|
---|
| 3945 | pNtProtect->enmProcessKind = enmProcessKind;
|
---|
| 3946 | pNtProtect->hParentPid = NULL;
|
---|
[52962] | 3947 | pNtProtect->hOpenTid = NULL;
|
---|
[51770] | 3948 | pNtProtect->hCsrssPid = NULL;
|
---|
| 3949 | pNtProtect->pCsrssProcess = NULL;
|
---|
| 3950 |
|
---|
| 3951 | if (fLink)
|
---|
| 3952 | {
|
---|
| 3953 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 3954 | bool fSuccess = RTAvlPVInsert(&g_NtProtectTree, &pNtProtect->AvlCore);
|
---|
[57303] | 3955 | pNtProtect->fInTree = fSuccess;
|
---|
[51770] | 3956 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3957 |
|
---|
| 3958 | if (!fSuccess)
|
---|
| 3959 | {
|
---|
| 3960 | /* Duplicate entry, fail. */
|
---|
| 3961 | pNtProtect->u32Magic = SUPDRVNTPROTECT_MAGIC_DEAD;
|
---|
[52135] | 3962 | LogRel(("supdrvNtProtectCreate: Duplicate (%#x).\n", pNtProtect->AvlCore.Key));
|
---|
[51770] | 3963 | RTMemFree(pNtProtect);
|
---|
[52135] | 3964 | return VERR_DUPLICATE;
|
---|
[51770] | 3965 | }
|
---|
| 3966 | }
|
---|
| 3967 |
|
---|
| 3968 | *ppNtProtect = pNtProtect;
|
---|
| 3969 | return VINF_SUCCESS;
|
---|
| 3970 | }
|
---|
| 3971 |
|
---|
| 3972 |
|
---|
| 3973 | /**
|
---|
| 3974 | * Releases a reference to a NT protection structure.
|
---|
| 3975 | *
|
---|
| 3976 | * @param pNtProtect The NT protection structure.
|
---|
| 3977 | */
|
---|
| 3978 | static void supdrvNtProtectRelease(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 3979 | {
|
---|
| 3980 | if (!pNtProtect)
|
---|
| 3981 | return;
|
---|
| 3982 | AssertReturnVoid(pNtProtect->u32Magic == SUPDRVNTPROTECT_MAGIC);
|
---|
| 3983 |
|
---|
| 3984 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 3985 | uint32_t cRefs = ASMAtomicDecU32(&pNtProtect->cRefs);
|
---|
| 3986 | if (cRefs != 0)
|
---|
| 3987 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 3988 | else
|
---|
| 3989 | {
|
---|
| 3990 | /*
|
---|
| 3991 | * That was the last reference. Remove it from the tree, invalidate it
|
---|
| 3992 | * and free the resources associated with it. Also, release any
|
---|
| 3993 | * child/parent references related to this protection structure.
|
---|
| 3994 | */
|
---|
| 3995 | ASMAtomicWriteU32(&pNtProtect->u32Magic, SUPDRVNTPROTECT_MAGIC_DEAD);
|
---|
[57303] | 3996 | if (pNtProtect->fInTree)
|
---|
| 3997 | {
|
---|
| 3998 | PSUPDRVNTPROTECT pRemoved = (PSUPDRVNTPROTECT)RTAvlPVRemove(&g_NtProtectTree, pNtProtect->AvlCore.Key);
|
---|
[62677] | 3999 | Assert(pRemoved == pNtProtect); RT_NOREF_PV(pRemoved);
|
---|
[57303] | 4000 | pNtProtect->fInTree = false;
|
---|
| 4001 | }
|
---|
[51770] | 4002 |
|
---|
| 4003 | PSUPDRVNTPROTECT pChild = NULL;
|
---|
| 4004 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubParent)
|
---|
| 4005 | {
|
---|
| 4006 | pChild = pNtProtect->u.pChild;
|
---|
| 4007 | if (pChild)
|
---|
| 4008 | {
|
---|
| 4009 | pNtProtect->u.pChild = NULL;
|
---|
| 4010 | pChild->u.pParent = NULL;
|
---|
| 4011 | pChild->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
[52908] | 4012 | uint32_t cChildRefs = ASMAtomicDecU32(&pChild->cRefs);
|
---|
[51770] | 4013 | if (!cChildRefs)
|
---|
[57303] | 4014 | {
|
---|
| 4015 | Assert(pChild->fInTree);
|
---|
| 4016 | if (pChild->fInTree)
|
---|
| 4017 | {
|
---|
| 4018 | PSUPDRVNTPROTECT pRemovedChild = (PSUPDRVNTPROTECT)RTAvlPVRemove(&g_NtProtectTree, pChild->AvlCore.Key);
|
---|
[62677] | 4019 | Assert(pRemovedChild == pChild); RT_NOREF_PV(pRemovedChild);
|
---|
[57303] | 4020 | pChild->fInTree = false;
|
---|
| 4021 | }
|
---|
| 4022 | }
|
---|
[51770] | 4023 | else
|
---|
| 4024 | pChild = NULL;
|
---|
| 4025 | }
|
---|
| 4026 | }
|
---|
| 4027 | else
|
---|
| 4028 | AssertRelease(pNtProtect->enmProcessKind != kSupDrvNtProtectKind_VmProcessUnconfirmed);
|
---|
| 4029 |
|
---|
| 4030 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4031 |
|
---|
| 4032 | if (pNtProtect->pCsrssProcess)
|
---|
| 4033 | {
|
---|
| 4034 | ObDereferenceObject(pNtProtect->pCsrssProcess);
|
---|
| 4035 | pNtProtect->pCsrssProcess = NULL;
|
---|
| 4036 | }
|
---|
| 4037 |
|
---|
| 4038 | RTMemFree(pNtProtect);
|
---|
| 4039 | if (pChild)
|
---|
| 4040 | RTMemFree(pChild);
|
---|
| 4041 | }
|
---|
| 4042 | }
|
---|
| 4043 |
|
---|
| 4044 |
|
---|
| 4045 | /**
|
---|
| 4046 | * Looks up a PID in the NT protect tree.
|
---|
| 4047 | *
|
---|
| 4048 | * @returns Pointer to a NT protection structure (with a referenced) on success,
|
---|
| 4049 | * NULL if not found.
|
---|
| 4050 | * @param hPid The process ID.
|
---|
| 4051 | */
|
---|
| 4052 | static PSUPDRVNTPROTECT supdrvNtProtectLookup(HANDLE hPid)
|
---|
| 4053 | {
|
---|
| 4054 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4055 | PSUPDRVNTPROTECT pFound = (PSUPDRVNTPROTECT)RTAvlPVGet(&g_NtProtectTree, hPid);
|
---|
| 4056 | if (pFound)
|
---|
| 4057 | ASMAtomicIncU32(&pFound->cRefs);
|
---|
| 4058 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4059 | return pFound;
|
---|
| 4060 | }
|
---|
| 4061 |
|
---|
| 4062 |
|
---|
| 4063 | /**
|
---|
[52962] | 4064 | * Validates a few facts about the stub process when the VM process opens
|
---|
| 4065 | * vboxdrv.
|
---|
| 4066 | *
|
---|
| 4067 | * This makes sure the stub process is still around and that it has neither
|
---|
| 4068 | * debugger nor extra threads in it.
|
---|
| 4069 | *
|
---|
| 4070 | * @returns VBox status code.
|
---|
| 4071 | * @param pNtProtect The unconfirmed VM process currently trying to
|
---|
| 4072 | * open vboxdrv.
|
---|
| 4073 | * @param pErrInfo Additional error information.
|
---|
| 4074 | */
|
---|
| 4075 | static int supdrvNtProtectVerifyStubForVmProcess(PSUPDRVNTPROTECT pNtProtect, PRTERRINFO pErrInfo)
|
---|
| 4076 | {
|
---|
| 4077 | /*
|
---|
| 4078 | * Grab a reference to the parent stub process.
|
---|
| 4079 | */
|
---|
| 4080 | SUPDRVNTPROTECTKIND enmStub = kSupDrvNtProtectKind_Invalid;
|
---|
| 4081 | PSUPDRVNTPROTECT pNtStub = NULL;
|
---|
| 4082 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4083 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4084 | {
|
---|
| 4085 | pNtStub = pNtProtect->u.pParent; /* weak reference. */
|
---|
| 4086 | if (pNtStub)
|
---|
| 4087 | {
|
---|
| 4088 | enmStub = pNtStub->enmProcessKind;
|
---|
| 4089 | if (enmStub == kSupDrvNtProtectKind_StubParent)
|
---|
| 4090 | {
|
---|
| 4091 | uint32_t cRefs = ASMAtomicIncU32(&pNtStub->cRefs);
|
---|
[62677] | 4092 | Assert(cRefs > 0 && cRefs < 1024); RT_NOREF_PV(cRefs);
|
---|
[52962] | 4093 | }
|
---|
| 4094 | else
|
---|
| 4095 | pNtStub = NULL;
|
---|
| 4096 | }
|
---|
| 4097 | }
|
---|
| 4098 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
| 4099 |
|
---|
| 4100 | /*
|
---|
| 4101 | * We require the stub process to be present.
|
---|
| 4102 | */
|
---|
| 4103 | if (!pNtStub)
|
---|
| 4104 | return RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_NOT_FOUND, "Missing stub process (enmStub=%d).", enmStub);
|
---|
| 4105 |
|
---|
| 4106 | /*
|
---|
| 4107 | * Open the parent process and thread so we can check for debuggers and unwanted threads.
|
---|
| 4108 | */
|
---|
| 4109 | int rc;
|
---|
| 4110 | PEPROCESS pStubProcess;
|
---|
| 4111 | NTSTATUS rcNt = PsLookupProcessByProcessId(pNtStub->AvlCore.Key, &pStubProcess);
|
---|
| 4112 | if (NT_SUCCESS(rcNt))
|
---|
| 4113 | {
|
---|
| 4114 | HANDLE hStubProcess;
|
---|
| 4115 | rcNt = ObOpenObjectByPointer(pStubProcess, OBJ_KERNEL_HANDLE, NULL /*PassedAccessState*/,
|
---|
| 4116 | 0 /*DesiredAccess*/, *PsProcessType, KernelMode, &hStubProcess);
|
---|
| 4117 | if (NT_SUCCESS(rcNt))
|
---|
| 4118 | {
|
---|
| 4119 | PETHREAD pStubThread;
|
---|
| 4120 | rcNt = PsLookupThreadByThreadId(pNtStub->hOpenTid, &pStubThread);
|
---|
| 4121 | if (NT_SUCCESS(rcNt))
|
---|
| 4122 | {
|
---|
| 4123 | HANDLE hStubThread;
|
---|
| 4124 | rcNt = ObOpenObjectByPointer(pStubThread, OBJ_KERNEL_HANDLE, NULL /*PassedAccessState*/,
|
---|
| 4125 | 0 /*DesiredAccess*/, *PsThreadType, KernelMode, &hStubThread);
|
---|
| 4126 | if (NT_SUCCESS(rcNt))
|
---|
| 4127 | {
|
---|
| 4128 | /*
|
---|
| 4129 | * Do some simple sanity checking.
|
---|
| 4130 | */
|
---|
| 4131 | rc = supHardNtVpDebugger(hStubProcess, pErrInfo);
|
---|
| 4132 | if (RT_SUCCESS(rc))
|
---|
| 4133 | rc = supHardNtVpThread(hStubProcess, hStubThread, pErrInfo);
|
---|
| 4134 |
|
---|
| 4135 | /* Clean up. */
|
---|
| 4136 | rcNt = NtClose(hStubThread); AssertMsg(NT_SUCCESS(rcNt), ("%#x\n", rcNt));
|
---|
| 4137 | }
|
---|
| 4138 | else
|
---|
| 4139 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_THREAD_OPEN_ERROR,
|
---|
| 4140 | "Error opening stub thread %p (tid %p, pid %p): %#x",
|
---|
| 4141 | pStubThread, pNtStub->hOpenTid, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4142 | }
|
---|
| 4143 | else
|
---|
| 4144 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_THREAD_NOT_FOUND,
|
---|
| 4145 | "Failed to locate thread %p in %p: %#x", pNtStub->hOpenTid, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4146 | rcNt = NtClose(hStubProcess); AssertMsg(NT_SUCCESS(rcNt), ("%#x\n", rcNt));
|
---|
| 4147 | }
|
---|
| 4148 | else
|
---|
| 4149 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_OPEN_ERROR,
|
---|
| 4150 | "Error opening stub process %p (pid %p): %#x", pStubProcess, pNtStub->AvlCore.Key, rcNt);
|
---|
| 4151 | ObDereferenceObject(pStubProcess);
|
---|
| 4152 | }
|
---|
| 4153 | else
|
---|
| 4154 | rc = RTErrInfoSetF(pErrInfo, VERR_SUP_VP_STUB_NOT_FOUND,
|
---|
| 4155 | "Failed to locate stub process %p: %#x", pNtStub->AvlCore.Key, rcNt);
|
---|
| 4156 |
|
---|
| 4157 | supdrvNtProtectRelease(pNtStub);
|
---|
| 4158 | return rc;
|
---|
| 4159 | }
|
---|
| 4160 |
|
---|
| 4161 |
|
---|
| 4162 | /**
|
---|
[51770] | 4163 | * Worker for supdrvNtProtectVerifyProcess that verifies the handles to a VM
|
---|
| 4164 | * process and its thread.
|
---|
| 4165 | *
|
---|
| 4166 | * @returns VBox status code.
|
---|
| 4167 | * @param pNtProtect The NT protect structure for getting information
|
---|
| 4168 | * about special processes.
|
---|
[53002] | 4169 | * @param pErrInfo Where to return additional error details.
|
---|
[51770] | 4170 | */
|
---|
[53002] | 4171 | static int supdrvNtProtectRestrictHandlesToProcessAndThread(PSUPDRVNTPROTECT pNtProtect, PRTERRINFO pErrInfo)
|
---|
[51770] | 4172 | {
|
---|
| 4173 | /*
|
---|
| 4174 | * What to protect.
|
---|
| 4175 | */
|
---|
| 4176 | PEPROCESS pProtectedProcess = PsGetCurrentProcess();
|
---|
| 4177 | HANDLE hProtectedPid = PsGetProcessId(pProtectedProcess);
|
---|
| 4178 | PETHREAD pProtectedThread = PsGetCurrentThread();
|
---|
| 4179 | AssertReturn(pNtProtect->AvlCore.Key == hProtectedPid, VERR_INTERNAL_ERROR_5);
|
---|
| 4180 |
|
---|
| 4181 | /*
|
---|
| 4182 | * Take a snapshot of all the handles in the system.
|
---|
[51918] | 4183 | * Note! The 32 bytes on the size of to counteract the allocation header
|
---|
| 4184 | * that rtR0MemAllocEx slaps on everything.
|
---|
[51770] | 4185 | */
|
---|
[51918] | 4186 | uint32_t cbBuf = _256K - 32;
|
---|
[51770] | 4187 | uint8_t *pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 4188 | ULONG cbNeeded = cbBuf;
|
---|
| 4189 | NTSTATUS rcNt = NtQuerySystemInformation(SystemExtendedHandleInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 4190 | if (!NT_SUCCESS(rcNt))
|
---|
| 4191 | {
|
---|
| 4192 | while ( rcNt == STATUS_INFO_LENGTH_MISMATCH
|
---|
| 4193 | && cbNeeded > cbBuf
|
---|
| 4194 | && cbBuf <= 32U*_1M)
|
---|
| 4195 | {
|
---|
[51918] | 4196 | cbBuf = RT_ALIGN_32(cbNeeded + _4K, _64K) - 32;
|
---|
[51770] | 4197 | RTMemFree(pbBuf);
|
---|
| 4198 | pbBuf = (uint8_t *)RTMemAlloc(cbBuf);
|
---|
| 4199 | if (!pbBuf)
|
---|
[53002] | 4200 | return RTErrInfoSetF(pErrInfo, VERR_NO_MEMORY, "Error allocating %zu bytes for querying handles.", cbBuf);
|
---|
[51770] | 4201 | rcNt = NtQuerySystemInformation(SystemExtendedHandleInformation, pbBuf, cbBuf, &cbNeeded);
|
---|
| 4202 | }
|
---|
| 4203 | if (!NT_SUCCESS(rcNt))
|
---|
| 4204 | {
|
---|
| 4205 | RTMemFree(pbBuf);
|
---|
[53002] | 4206 | return RTErrInfoSetF(pErrInfo, RTErrConvertFromNtStatus(rcNt),
|
---|
| 4207 | "NtQuerySystemInformation/SystemExtendedHandleInformation failed: %#x\n", rcNt);
|
---|
[51770] | 4208 | }
|
---|
| 4209 | }
|
---|
| 4210 |
|
---|
| 4211 | /*
|
---|
| 4212 | * Walk the information and look for handles to the two objects we're protecting.
|
---|
| 4213 | */
|
---|
| 4214 | int rc = VINF_SUCCESS;
|
---|
[52387] | 4215 | # ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 4216 | HANDLE idLastDebugger = (HANDLE)~(uintptr_t)0;
|
---|
| 4217 | # endif
|
---|
[51770] | 4218 |
|
---|
| 4219 | uint32_t cCsrssProcessHandles = 0;
|
---|
| 4220 | uint32_t cSystemProcessHandles = 0;
|
---|
| 4221 | uint32_t cEvilProcessHandles = 0;
|
---|
| 4222 | uint32_t cBenignProcessHandles = 0;
|
---|
| 4223 |
|
---|
| 4224 | uint32_t cCsrssThreadHandles = 0;
|
---|
| 4225 | uint32_t cEvilThreadHandles = 0;
|
---|
| 4226 | uint32_t cBenignThreadHandles = 0;
|
---|
| 4227 |
|
---|
| 4228 | SYSTEM_HANDLE_INFORMATION_EX const *pInfo = (SYSTEM_HANDLE_INFORMATION_EX const *)pbBuf;
|
---|
| 4229 | ULONG_PTR i = pInfo->NumberOfHandles;
|
---|
| 4230 | AssertRelease(RT_OFFSETOF(SYSTEM_HANDLE_INFORMATION_EX, Handles[i]) == cbNeeded);
|
---|
| 4231 | while (i-- > 0)
|
---|
| 4232 | {
|
---|
| 4233 | const char *pszType;
|
---|
| 4234 | SYSTEM_HANDLE_ENTRY_INFO_EX const *pHandleInfo = &pInfo->Handles[i];
|
---|
| 4235 | if (pHandleInfo->Object == pProtectedProcess)
|
---|
| 4236 | {
|
---|
[52949] | 4237 | /* Handles within the protected process are fine. */
|
---|
[51770] | 4238 | if ( !(pHandleInfo->GrantedAccess & SUPDRV_NT_EVIL_PROCESS_RIGHTS)
|
---|
| 4239 | || pHandleInfo->UniqueProcessId == hProtectedPid)
|
---|
| 4240 | {
|
---|
| 4241 | cBenignProcessHandles++;
|
---|
| 4242 | continue;
|
---|
| 4243 | }
|
---|
| 4244 |
|
---|
| 4245 | /* CSRSS is allowed to have one evil process handle.
|
---|
| 4246 | See the special cases in the hook code. */
|
---|
| 4247 | if ( cCsrssProcessHandles < 1
|
---|
| 4248 | && pHandleInfo->UniqueProcessId == pNtProtect->hCsrssPid)
|
---|
| 4249 | {
|
---|
| 4250 | cCsrssProcessHandles++;
|
---|
| 4251 | continue;
|
---|
| 4252 | }
|
---|
| 4253 |
|
---|
[53016] | 4254 | /* The system process is allowed having two open process handle in
|
---|
| 4255 | Windows 8.1 and later, and one in earlier. This is probably a
|
---|
| 4256 | little overly paranoid as I think we can safely trust the
|
---|
| 4257 | system process... */
|
---|
[57303] | 4258 | if ( cSystemProcessHandles < (g_uNtVerCombined >= SUP_MAKE_NT_VER_SIMPLE(6, 3) ? UINT32_C(2) : UINT32_C(1))
|
---|
[51770] | 4259 | && pHandleInfo->UniqueProcessId == PsGetProcessId(PsInitialSystemProcess))
|
---|
| 4260 | {
|
---|
| 4261 | cSystemProcessHandles++;
|
---|
| 4262 | continue;
|
---|
| 4263 | }
|
---|
| 4264 |
|
---|
| 4265 | cEvilProcessHandles++;
|
---|
| 4266 | pszType = "process";
|
---|
| 4267 | }
|
---|
| 4268 | else if (pHandleInfo->Object == pProtectedThread)
|
---|
| 4269 | {
|
---|
| 4270 | /* Handles within the protected process is fine. */
|
---|
| 4271 | if ( !(pHandleInfo->GrantedAccess & SUPDRV_NT_EVIL_THREAD_RIGHTS)
|
---|
| 4272 | || pHandleInfo->UniqueProcessId == hProtectedPid)
|
---|
| 4273 | {
|
---|
| 4274 | cBenignThreadHandles++;
|
---|
| 4275 | continue;
|
---|
| 4276 | }
|
---|
| 4277 |
|
---|
| 4278 | /* CSRSS is allowed to have one evil handle to the primary thread
|
---|
| 4279 | for LPC purposes. See the hook for special case. */
|
---|
| 4280 | if ( cCsrssThreadHandles < 1
|
---|
| 4281 | && pHandleInfo->UniqueProcessId == pNtProtect->hCsrssPid)
|
---|
| 4282 | {
|
---|
| 4283 | cCsrssThreadHandles++;
|
---|
| 4284 | continue;
|
---|
| 4285 | }
|
---|
| 4286 |
|
---|
| 4287 | cEvilThreadHandles++;
|
---|
| 4288 | pszType = "thread";
|
---|
| 4289 | }
|
---|
| 4290 | else
|
---|
| 4291 | continue;
|
---|
| 4292 |
|
---|
[52387] | 4293 | # ifdef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 4294 | /* Ignore whitelisted debuggers. */
|
---|
| 4295 | if (pHandleInfo->UniqueProcessId == idLastDebugger)
|
---|
| 4296 | continue;
|
---|
| 4297 | PEPROCESS pDbgProc;
|
---|
| 4298 | NTSTATUS rcNt = PsLookupProcessByProcessId(pHandleInfo->UniqueProcessId, &pDbgProc);
|
---|
| 4299 | if (NT_SUCCESS(rcNt))
|
---|
| 4300 | {
|
---|
| 4301 | bool fIsDebugger = supdrvNtProtectIsWhitelistedDebugger(pDbgProc);
|
---|
| 4302 | ObDereferenceObject(pDbgProc);
|
---|
| 4303 | if (fIsDebugger)
|
---|
| 4304 | {
|
---|
| 4305 | idLastDebugger = pHandleInfo->UniqueProcessId;
|
---|
| 4306 | continue;
|
---|
| 4307 | }
|
---|
| 4308 | }
|
---|
| 4309 | # endif
|
---|
| 4310 |
|
---|
[51770] | 4311 | /* Found evil handle. Currently ignoring on pre-Vista. */
|
---|
| 4312 | # ifndef VBOX_WITH_VISTA_NO_SP
|
---|
| 4313 | if ( g_uNtVerCombined >= SUP_NT_VER_VISTA
|
---|
| 4314 | # else
|
---|
| 4315 | if ( g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 6001, 0, 0)
|
---|
| 4316 | # endif
|
---|
| 4317 | || g_pfnObRegisterCallbacks)
|
---|
| 4318 | {
|
---|
| 4319 | LogRel(("vboxdrv: Found evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s\n",
|
---|
| 4320 | pHandleInfo->UniqueProcessId, pHandleInfo->HandleValue,
|
---|
| 4321 | pHandleInfo->GrantedAccess, pHandleInfo->HandleAttributes, pszType));
|
---|
[53002] | 4322 | rc = RTErrInfoAddF(pErrInfo, VERR_SUPDRV_HARDENING_EVIL_HANDLE,
|
---|
| 4323 | *pErrInfo->pszMsg
|
---|
| 4324 | ? "\nFound evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s"
|
---|
| 4325 | : "Found evil handle to budding VM process: pid=%p h=%p acc=%#x attr=%#x type=%s",
|
---|
| 4326 | pHandleInfo->UniqueProcessId, pHandleInfo->HandleValue,
|
---|
| 4327 | pHandleInfo->GrantedAccess, pHandleInfo->HandleAttributes, pszType);
|
---|
| 4328 |
|
---|
| 4329 | /* Try add the process name. */
|
---|
| 4330 | PEPROCESS pOffendingProcess;
|
---|
| 4331 | rcNt = PsLookupProcessByProcessId(pHandleInfo->UniqueProcessId, &pOffendingProcess);
|
---|
| 4332 | if (NT_SUCCESS(rcNt))
|
---|
| 4333 | {
|
---|
| 4334 | const char *pszName = (const char *)PsGetProcessImageFileName(pOffendingProcess);
|
---|
| 4335 | if (pszName && *pszName)
|
---|
| 4336 | rc = RTErrInfoAddF(pErrInfo, rc, " [%s]", pszName);
|
---|
| 4337 |
|
---|
| 4338 | ObDereferenceObject(pOffendingProcess);
|
---|
| 4339 | }
|
---|
[51770] | 4340 | }
|
---|
| 4341 | }
|
---|
| 4342 |
|
---|
[51918] | 4343 | RTMemFree(pbBuf);
|
---|
[51770] | 4344 | return rc;
|
---|
| 4345 | }
|
---|
| 4346 |
|
---|
| 4347 |
|
---|
| 4348 | /**
|
---|
| 4349 | * Checks if the current process checks out as a VM process stub.
|
---|
| 4350 | *
|
---|
| 4351 | * @returns VBox status code.
|
---|
| 4352 | * @param pNtProtect The NT protect structure. This is upgraded to a
|
---|
| 4353 | * final protection kind (state) on success.
|
---|
| 4354 | */
|
---|
| 4355 | static int supdrvNtProtectVerifyProcess(PSUPDRVNTPROTECT pNtProtect)
|
---|
| 4356 | {
|
---|
| 4357 | AssertReturn(PsGetProcessId(PsGetCurrentProcess()) == pNtProtect->AvlCore.Key, VERR_INTERNAL_ERROR_3);
|
---|
| 4358 |
|
---|
| 4359 | /*
|
---|
| 4360 | * Do the verification. The handle restriction checks are only preformed
|
---|
| 4361 | * on VM processes.
|
---|
| 4362 | */
|
---|
| 4363 | int rc = VINF_SUCCESS;
|
---|
[53002] | 4364 | PSUPDRVNTERRORINFO pErrorInfo = (PSUPDRVNTERRORINFO)RTMemAllocZ(sizeof(*pErrorInfo));
|
---|
[51770] | 4365 | if (RT_SUCCESS(rc))
|
---|
| 4366 | {
|
---|
[53002] | 4367 | pErrorInfo->hProcessId = PsGetCurrentProcessId();
|
---|
| 4368 | pErrorInfo->hThreadId = PsGetCurrentThreadId();
|
---|
[51770] | 4369 | RTERRINFO ErrInfo;
|
---|
[53002] | 4370 | RTErrInfoInit(&ErrInfo, pErrorInfo->szErrorInfo, sizeof(pErrorInfo->szErrorInfo));
|
---|
[51770] | 4371 |
|
---|
[53002] | 4372 | if (pNtProtect->enmProcessKind >= kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4373 | rc = supdrvNtProtectRestrictHandlesToProcessAndThread(pNtProtect, &ErrInfo);
|
---|
| 4374 | if (RT_SUCCESS(rc))
|
---|
| 4375 | {
|
---|
[53017] | 4376 | rc = supHardenedWinVerifyProcess(NtCurrentProcess(), NtCurrentThread(), SUPHARDNTVPKIND_VERIFY_ONLY, 0 /*fFlags*/,
|
---|
[53002] | 4377 | NULL /*pcFixes*/, &ErrInfo);
|
---|
| 4378 | if (RT_SUCCESS(rc) && pNtProtect->enmProcessKind >= kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4379 | rc = supdrvNtProtectVerifyStubForVmProcess(pNtProtect, &ErrInfo);
|
---|
| 4380 | }
|
---|
[51770] | 4381 | }
|
---|
[53002] | 4382 | else
|
---|
| 4383 | rc = VERR_NO_MEMORY;
|
---|
[51770] | 4384 |
|
---|
| 4385 | /*
|
---|
| 4386 | * Upgrade and return.
|
---|
| 4387 | */
|
---|
[52962] | 4388 | HANDLE hOpenTid = PsGetCurrentThreadId();
|
---|
[51770] | 4389 | RTSpinlockAcquire(g_hNtProtectLock);
|
---|
| 4390 |
|
---|
| 4391 | /* Stub process verficiation is pretty much straight forward. */
|
---|
| 4392 | if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubUnverified)
|
---|
[52962] | 4393 | {
|
---|
[51770] | 4394 | pNtProtect->enmProcessKind = RT_SUCCESS(rc) ? kSupDrvNtProtectKind_StubSpawning : kSupDrvNtProtectKind_StubDead;
|
---|
[52962] | 4395 | pNtProtect->hOpenTid = hOpenTid;
|
---|
| 4396 | }
|
---|
[51770] | 4397 | /* The VM process verification is a little bit more complicated
|
---|
| 4398 | because we need to drop the parent process reference as well. */
|
---|
| 4399 | else if (pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessUnconfirmed)
|
---|
| 4400 | {
|
---|
| 4401 | AssertRelease(pNtProtect->cRefs >= 2); /* Parent + Caller */
|
---|
| 4402 | PSUPDRVNTPROTECT pParent = pNtProtect->u.pParent;
|
---|
| 4403 | AssertRelease(pParent);
|
---|
| 4404 | AssertRelease(pParent->u.pParent == pNtProtect);
|
---|
| 4405 | AssertRelease(pParent->enmProcessKind == kSupDrvNtProtectKind_StubParent);
|
---|
| 4406 | pParent->u.pParent = NULL;
|
---|
| 4407 |
|
---|
| 4408 | pNtProtect->u.pParent = NULL;
|
---|
| 4409 | ASMAtomicDecU32(&pNtProtect->cRefs);
|
---|
| 4410 |
|
---|
| 4411 | if (RT_SUCCESS(rc))
|
---|
[52962] | 4412 | {
|
---|
[51770] | 4413 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessConfirmed;
|
---|
[52962] | 4414 | pNtProtect->hOpenTid = hOpenTid;
|
---|
| 4415 | }
|
---|
[51770] | 4416 | else
|
---|
| 4417 | pNtProtect->enmProcessKind = kSupDrvNtProtectKind_VmProcessDead;
|
---|
| 4418 | }
|
---|
| 4419 |
|
---|
| 4420 | /* Since the stub and VM processes are only supposed to have one thread,
|
---|
| 4421 | we're not supposed to be subject to any races from within the processes.
|
---|
| 4422 |
|
---|
| 4423 | There is a race between VM process verification and the stub process
|
---|
| 4424 | exiting, though. We require the stub process to be alive until the new
|
---|
| 4425 | VM process has made it thru the validation. So, when the stub
|
---|
| 4426 | terminates the notification handler will change the state of both stub
|
---|
| 4427 | and VM process to dead.
|
---|
| 4428 |
|
---|
| 4429 | Also, I'm not entirely certain where the process
|
---|
| 4430 | termination notification is triggered from, so that can theorically
|
---|
| 4431 | create a race in both cases. */
|
---|
| 4432 | else
|
---|
| 4433 | {
|
---|
| 4434 | AssertReleaseMsg( pNtProtect->enmProcessKind == kSupDrvNtProtectKind_StubDead
|
---|
| 4435 | || pNtProtect->enmProcessKind == kSupDrvNtProtectKind_VmProcessDead,
|
---|
| 4436 | ("enmProcessKind=%d rc=%Rrc\n", pNtProtect->enmProcessKind, rc));
|
---|
| 4437 | if (RT_SUCCESS(rc))
|
---|
| 4438 | rc = VERR_INVALID_STATE; /* There should be no races here. */
|
---|
| 4439 | }
|
---|
| 4440 |
|
---|
| 4441 | RTSpinlockRelease(g_hNtProtectLock);
|
---|
[53002] | 4442 |
|
---|
| 4443 | /*
|
---|
| 4444 | * Free error info on success, keep it on failure.
|
---|
| 4445 | */
|
---|
| 4446 | if (RT_SUCCESS(rc))
|
---|
| 4447 | RTMemFree(pErrorInfo);
|
---|
| 4448 | else if (pErrorInfo)
|
---|
| 4449 | {
|
---|
| 4450 | pErrorInfo->cchErrorInfo = (uint32_t)strlen(pErrorInfo->szErrorInfo);
|
---|
| 4451 | if (!pErrorInfo->cchErrorInfo)
|
---|
| 4452 | pErrorInfo->cchErrorInfo = (uint32_t)RTStrPrintf(pErrorInfo->szErrorInfo, sizeof(pErrorInfo->szErrorInfo),
|
---|
| 4453 | "supdrvNtProtectVerifyProcess: rc=%d", rc);
|
---|
[57201] | 4454 | RTLogWriteDebugger(pErrorInfo->szErrorInfo, pErrorInfo->cchErrorInfo);
|
---|
[53002] | 4455 |
|
---|
| 4456 | int rc2 = RTSemMutexRequest(g_hErrorInfoLock, RT_INDEFINITE_WAIT);
|
---|
| 4457 | if (RT_SUCCESS(rc2))
|
---|
| 4458 | {
|
---|
| 4459 | pErrorInfo->uCreatedMsTs = RTTimeMilliTS();
|
---|
| 4460 |
|
---|
| 4461 | /* Free old entries. */
|
---|
| 4462 | PSUPDRVNTERRORINFO pCur;
|
---|
| 4463 | while ( (pCur = RTListGetFirst(&g_ErrorInfoHead, SUPDRVNTERRORINFO, ListEntry)) != NULL
|
---|
| 4464 | && (int64_t)(pErrorInfo->uCreatedMsTs - pCur->uCreatedMsTs) > 60000 /*60sec*/)
|
---|
| 4465 | {
|
---|
| 4466 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 4467 | RTMemFree(pCur);
|
---|
| 4468 | }
|
---|
| 4469 |
|
---|
| 4470 | /* Insert our new entry. */
|
---|
| 4471 | RTListAppend(&g_ErrorInfoHead, &pErrorInfo->ListEntry);
|
---|
| 4472 |
|
---|
| 4473 | RTSemMutexRelease(g_hErrorInfoLock);
|
---|
| 4474 | }
|
---|
| 4475 | else
|
---|
| 4476 | RTMemFree(pErrorInfo);
|
---|
| 4477 | }
|
---|
| 4478 |
|
---|
[51770] | 4479 | return rc;
|
---|
| 4480 | }
|
---|
| 4481 |
|
---|
| 4482 |
|
---|
| 4483 | # ifndef VBOX_WITHOUT_DEBUGGER_CHECKS
|
---|
| 4484 |
|
---|
| 4485 | /**
|
---|
| 4486 | * Checks if the current process is being debugged.
|
---|
| 4487 | * @return @c true if debugged, @c false if not.
|
---|
| 4488 | */
|
---|
| 4489 | static bool supdrvNtIsDebuggerAttached(void)
|
---|
| 4490 | {
|
---|
| 4491 | return PsIsProcessBeingDebugged(PsGetCurrentProcess()) != FALSE;
|
---|
| 4492 | }
|
---|
| 4493 |
|
---|
| 4494 | # endif /* !VBOX_WITHOUT_DEBUGGER_CHECKS */
|
---|
| 4495 |
|
---|
| 4496 |
|
---|
| 4497 | /**
|
---|
| 4498 | * Terminates the hardening bits.
|
---|
| 4499 | */
|
---|
| 4500 | static void supdrvNtProtectTerm(void)
|
---|
| 4501 | {
|
---|
| 4502 | /*
|
---|
| 4503 | * Stop intercepting process and thread handle creation calls.
|
---|
| 4504 | */
|
---|
| 4505 | if (g_pvObCallbacksCookie)
|
---|
| 4506 | {
|
---|
| 4507 | g_pfnObUnRegisterCallbacks(g_pvObCallbacksCookie);
|
---|
| 4508 | g_pvObCallbacksCookie = NULL;
|
---|
| 4509 | }
|
---|
| 4510 |
|
---|
| 4511 | /*
|
---|
| 4512 | * Stop intercepting process creation and termination notifications.
|
---|
| 4513 | */
|
---|
| 4514 | NTSTATUS rcNt;
|
---|
| 4515 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 4516 | rcNt = g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, TRUE /*fRemove*/);
|
---|
| 4517 | else
|
---|
| 4518 | rcNt = PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, TRUE /*fRemove*/);
|
---|
| 4519 | AssertMsg(NT_SUCCESS(rcNt), ("rcNt=%#x\n", rcNt));
|
---|
| 4520 |
|
---|
| 4521 | Assert(g_NtProtectTree == NULL);
|
---|
| 4522 |
|
---|
| 4523 | /*
|
---|
| 4524 | * Clean up globals.
|
---|
| 4525 | */
|
---|
| 4526 | RTSpinlockDestroy(g_hNtProtectLock);
|
---|
| 4527 | g_NtProtectTree = NIL_RTSPINLOCK;
|
---|
| 4528 |
|
---|
[53002] | 4529 | RTSemMutexDestroy(g_hErrorInfoLock);
|
---|
| 4530 | g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
| 4531 |
|
---|
| 4532 | PSUPDRVNTERRORINFO pCur;
|
---|
| 4533 | while ((pCur = RTListGetFirst(&g_ErrorInfoHead, SUPDRVNTERRORINFO, ListEntry)) != NULL)
|
---|
| 4534 | {
|
---|
| 4535 | RTListNodeRemove(&pCur->ListEntry);
|
---|
| 4536 | RTMemFree(pCur);
|
---|
| 4537 | }
|
---|
| 4538 |
|
---|
[51770] | 4539 | supHardenedWinTermImageVerifier();
|
---|
| 4540 | }
|
---|
| 4541 |
|
---|
| 4542 | # ifdef RT_ARCH_X86
|
---|
| 4543 | DECLASM(void) supdrvNtQueryVirtualMemory_0xAF(void);
|
---|
| 4544 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB0(void);
|
---|
| 4545 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB1(void);
|
---|
| 4546 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB2(void);
|
---|
| 4547 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB3(void);
|
---|
| 4548 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB4(void);
|
---|
| 4549 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB5(void);
|
---|
| 4550 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB6(void);
|
---|
| 4551 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB7(void);
|
---|
| 4552 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB8(void);
|
---|
| 4553 | DECLASM(void) supdrvNtQueryVirtualMemory_0xB9(void);
|
---|
| 4554 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBA(void);
|
---|
| 4555 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBB(void);
|
---|
| 4556 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBC(void);
|
---|
| 4557 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBD(void);
|
---|
| 4558 | DECLASM(void) supdrvNtQueryVirtualMemory_0xBE(void);
|
---|
| 4559 | # elif defined(RT_ARCH_AMD64)
|
---|
| 4560 | DECLASM(void) supdrvNtQueryVirtualMemory_0x1F(void);
|
---|
| 4561 | DECLASM(void) supdrvNtQueryVirtualMemory_0x20(void);
|
---|
| 4562 | DECLASM(void) supdrvNtQueryVirtualMemory_0x21(void);
|
---|
| 4563 | DECLASM(void) supdrvNtQueryVirtualMemory_0x22(void);
|
---|
| 4564 | DECLASM(void) supdrvNtQueryVirtualMemory_0x23(void);
|
---|
| 4565 | extern "C" NTSYSAPI NTSTATUS NTAPI ZwRequestWaitReplyPort(HANDLE, PVOID, PVOID);
|
---|
| 4566 | # endif
|
---|
| 4567 |
|
---|
[62677] | 4568 |
|
---|
[51770] | 4569 | /**
|
---|
| 4570 | * Initalizes the hardening bits.
|
---|
| 4571 | *
|
---|
| 4572 | * @returns NT status code.
|
---|
| 4573 | */
|
---|
| 4574 | static NTSTATUS supdrvNtProtectInit(void)
|
---|
| 4575 | {
|
---|
| 4576 | /*
|
---|
| 4577 | * Initialize the globals.
|
---|
| 4578 | */
|
---|
| 4579 |
|
---|
| 4580 | /* The NT version. */
|
---|
| 4581 | ULONG uMajor, uMinor, uBuild;
|
---|
| 4582 | PsGetVersion(&uMajor, &uMinor, &uBuild, NULL);
|
---|
| 4583 | g_uNtVerCombined = SUP_MAKE_NT_VER_COMBINED(uMajor, uMinor, uBuild, 0, 0);
|
---|
| 4584 |
|
---|
| 4585 | /* Resolve methods we want but isn't available everywhere. */
|
---|
| 4586 | UNICODE_STRING RoutineName;
|
---|
| 4587 |
|
---|
[52735] | 4588 | RtlInitUnicodeString(&RoutineName, L"ObGetObjectType");
|
---|
| 4589 | g_pfnObGetObjectType = (PFNOBGETOBJECTTYPE)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4590 |
|
---|
[51770] | 4591 | RtlInitUnicodeString(&RoutineName, L"ObRegisterCallbacks");
|
---|
| 4592 | g_pfnObRegisterCallbacks = (PFNOBREGISTERCALLBACKS)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4593 |
|
---|
| 4594 | RtlInitUnicodeString(&RoutineName, L"ObUnRegisterCallbacks");
|
---|
| 4595 | g_pfnObUnRegisterCallbacks = (PFNOBUNREGISTERCALLBACKS)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4596 |
|
---|
| 4597 | RtlInitUnicodeString(&RoutineName, L"PsSetCreateProcessNotifyRoutineEx");
|
---|
| 4598 | g_pfnPsSetCreateProcessNotifyRoutineEx = (PFNPSSETCREATEPROCESSNOTIFYROUTINEEX)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4599 |
|
---|
| 4600 | RtlInitUnicodeString(&RoutineName, L"PsReferenceProcessFilePointer");
|
---|
| 4601 | g_pfnPsReferenceProcessFilePointer = (PFNPSREFERENCEPROCESSFILEPOINTER)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4602 |
|
---|
| 4603 | RtlInitUnicodeString(&RoutineName, L"PsIsProtectedProcessLight");
|
---|
| 4604 | g_pfnPsIsProtectedProcessLight = (PFNPSISPROTECTEDPROCESSLIGHT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4605 |
|
---|
[52735] | 4606 | RtlInitUnicodeString(&RoutineName, L"ZwAlpcCreatePort");
|
---|
| 4607 | g_pfnZwAlpcCreatePort = (PFNZWALPCCREATEPORT)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4608 |
|
---|
[51770] | 4609 | RtlInitUnicodeString(&RoutineName, L"ZwQueryVirtualMemory"); /* Yes, using Zw version here. */
|
---|
| 4610 | g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 4611 | if (!g_pfnNtQueryVirtualMemory && g_uNtVerCombined < SUP_NT_VER_VISTA)
|
---|
| 4612 | {
|
---|
| 4613 | /* XP & W2K3 doesn't have this function exported, so we've cooked up a
|
---|
| 4614 | few alternative in the assembly helper file that uses the code in
|
---|
[51955] | 4615 | ZwReadFile with a different eax value. We figure the syscall number
|
---|
| 4616 | by inspecting ZwQueryVolumeInformationFile as it's the next number. */
|
---|
[51770] | 4617 | # ifdef RT_ARCH_X86
|
---|
| 4618 | uint8_t const *pbCode = (uint8_t const *)(uintptr_t)ZwQueryVolumeInformationFile;
|
---|
| 4619 | if (*pbCode == 0xb8) /* mov eax, dword */
|
---|
| 4620 | switch (*(uint32_t const *)&pbCode[1])
|
---|
| 4621 | {
|
---|
| 4622 | case 0xb0: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xAF; break; /* just in case */
|
---|
| 4623 | case 0xb1: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB0; break; /* just in case */
|
---|
| 4624 | case 0xb2: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB1; break; /* just in case */
|
---|
| 4625 | case 0xb3: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB2; break; /* XP SP3 */
|
---|
| 4626 | case 0xb4: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB2; break; /* just in case */
|
---|
| 4627 | case 0xb5: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB3; break; /* just in case */
|
---|
| 4628 | case 0xb6: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB4; break; /* just in case */
|
---|
| 4629 | case 0xb7: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB5; break; /* just in case */
|
---|
| 4630 | case 0xb8: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB6; break; /* just in case */
|
---|
| 4631 | case 0xb9: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB7; break; /* just in case */
|
---|
| 4632 | case 0xba: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xB8; break; /* just in case */
|
---|
| 4633 | case 0xbb: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBA; break; /* W2K3 R2 SP2 */
|
---|
| 4634 | case 0xbc: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBB; break; /* just in case */
|
---|
| 4635 | case 0xbd: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBC; break; /* just in case */
|
---|
| 4636 | case 0xbe: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBD; break; /* just in case */
|
---|
| 4637 | case 0xbf: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0xBE; break; /* just in case */
|
---|
| 4638 | }
|
---|
| 4639 | # elif defined(RT_ARCH_AMD64)
|
---|
| 4640 | uint8_t const *pbCode = (uint8_t const *)(uintptr_t)ZwRequestWaitReplyPort;
|
---|
| 4641 | if ( pbCode[ 0] == 0x48 /* mov rax, rsp */
|
---|
| 4642 | && pbCode[ 1] == 0x8b
|
---|
| 4643 | && pbCode[ 2] == 0xc4
|
---|
| 4644 | && pbCode[ 3] == 0xfa /* cli */
|
---|
| 4645 | && pbCode[ 4] == 0x48 /* sub rsp, 10h */
|
---|
| 4646 | && pbCode[ 5] == 0x83
|
---|
| 4647 | && pbCode[ 6] == 0xec
|
---|
| 4648 | && pbCode[ 7] == 0x10
|
---|
| 4649 | && pbCode[ 8] == 0x50 /* push rax */
|
---|
| 4650 | && pbCode[ 9] == 0x9c /* pushfq */
|
---|
| 4651 | && pbCode[10] == 0x6a /* push 10 */
|
---|
| 4652 | && pbCode[11] == 0x10
|
---|
| 4653 | && pbCode[12] == 0x48 /* lea rax, [nt!KiServiceLinkage] */
|
---|
| 4654 | && pbCode[13] == 0x8d
|
---|
| 4655 | && pbCode[14] == 0x05
|
---|
| 4656 | && pbCode[19] == 0x50 /* push rax */
|
---|
| 4657 | && pbCode[20] == 0xb8 /* mov eax,1fh <- the syscall no. */
|
---|
| 4658 | /*&& pbCode[21] == 0x1f*/
|
---|
| 4659 | && pbCode[22] == 0x00
|
---|
| 4660 | && pbCode[23] == 0x00
|
---|
| 4661 | && pbCode[24] == 0x00
|
---|
| 4662 | && pbCode[25] == 0xe9 /* jmp KiServiceInternal */
|
---|
| 4663 | )
|
---|
| 4664 | {
|
---|
| 4665 | uint8_t const *pbKiServiceInternal = &pbCode[30] + *(int32_t const *)&pbCode[26];
|
---|
| 4666 | uint8_t const *pbKiServiceLinkage = &pbCode[19] + *(int32_t const *)&pbCode[15];
|
---|
| 4667 | if (*pbKiServiceLinkage == 0xc3)
|
---|
| 4668 | {
|
---|
| 4669 | g_pfnKiServiceInternal = (PFNRT)pbKiServiceInternal;
|
---|
| 4670 | g_pfnKiServiceLinkage = (PFNRT)pbKiServiceLinkage;
|
---|
| 4671 | switch (pbCode[21])
|
---|
| 4672 | {
|
---|
| 4673 | case 0x1e: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x1F; break;
|
---|
| 4674 | case 0x1f: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x20; break;
|
---|
| 4675 | case 0x20: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x21; break;
|
---|
| 4676 | case 0x21: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x22; break;
|
---|
| 4677 | case 0x22: g_pfnNtQueryVirtualMemory = (PFNNTQUERYVIRTUALMEMORY)supdrvNtQueryVirtualMemory_0x23; break;
|
---|
| 4678 | }
|
---|
| 4679 | }
|
---|
| 4680 | }
|
---|
| 4681 | # endif
|
---|
| 4682 | }
|
---|
| 4683 | if (!g_pfnNtQueryVirtualMemory)
|
---|
| 4684 | {
|
---|
| 4685 | LogRel(("vboxdrv: Cannot locate ZwQueryVirtualMemory in ntoskrnl, nor were we able to cook up a replacement.\n"));
|
---|
| 4686 | return STATUS_PROCEDURE_NOT_FOUND;
|
---|
| 4687 | }
|
---|
| 4688 |
|
---|
[52735] | 4689 | # ifdef VBOX_STRICT
|
---|
| 4690 | if ( g_uNtVerCombined >= SUP_NT_VER_W70
|
---|
| 4691 | && ( g_pfnObGetObjectType == NULL
|
---|
| 4692 | || g_pfnZwAlpcCreatePort == NULL) )
|
---|
| 4693 | {
|
---|
| 4694 | LogRel(("vboxdrv: g_pfnObGetObjectType=%p g_pfnZwAlpcCreatePort=%p.\n", g_pfnObGetObjectType, g_pfnZwAlpcCreatePort));
|
---|
| 4695 | return STATUS_PROCEDURE_NOT_FOUND;
|
---|
| 4696 | }
|
---|
| 4697 | # endif
|
---|
[51770] | 4698 |
|
---|
[52738] | 4699 | /* LPC object type. */
|
---|
| 4700 | g_pAlpcPortObjectType1 = *LpcPortObjectType;
|
---|
| 4701 |
|
---|
[51770] | 4702 | /* The spinlock protecting our structures. */
|
---|
| 4703 | int rc = RTSpinlockCreate(&g_hNtProtectLock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "NtProtectLock");
|
---|
| 4704 | if (RT_FAILURE(rc))
|
---|
| 4705 | return VBoxDrvNtErr2NtStatus(rc);
|
---|
| 4706 | g_NtProtectTree = NULL;
|
---|
| 4707 |
|
---|
| 4708 | NTSTATUS rcNt;
|
---|
[53002] | 4709 |
|
---|
| 4710 | /* The mutex protecting the error information. */
|
---|
| 4711 | RTListInit(&g_ErrorInfoHead);
|
---|
| 4712 | rc = RTSemMutexCreate(&g_hErrorInfoLock);
|
---|
[51770] | 4713 | if (RT_SUCCESS(rc))
|
---|
| 4714 | {
|
---|
[53002] | 4715 | /* Image stuff + certificates. */
|
---|
| 4716 | rc = supHardenedWinInitImageVerifier(NULL);
|
---|
| 4717 | if (RT_SUCCESS(rc))
|
---|
[51770] | 4718 | {
|
---|
| 4719 | /*
|
---|
[53002] | 4720 | * Intercept process creation and termination.
|
---|
[51770] | 4721 | */
|
---|
[53002] | 4722 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 4723 | rcNt = g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, FALSE /*fRemove*/);
|
---|
| 4724 | else
|
---|
| 4725 | rcNt = PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, FALSE /*fRemove*/);
|
---|
| 4726 | if (NT_SUCCESS(rcNt))
|
---|
[51770] | 4727 | {
|
---|
[53002] | 4728 | /*
|
---|
| 4729 | * Intercept process and thread handle creation calls.
|
---|
| 4730 | * The preferred method is only available on Vista SP1+.
|
---|
| 4731 | */
|
---|
| 4732 | if (g_pfnObRegisterCallbacks && g_pfnObUnRegisterCallbacks)
|
---|
[51770] | 4733 | {
|
---|
[53002] | 4734 | static OB_OPERATION_REGISTRATION s_aObOperations[] =
|
---|
[51770] | 4735 | {
|
---|
[53002] | 4736 | {
|
---|
[62677] | 4737 | 0, /* PsProcessType - imported, need runtime init, better do it explicitly. */
|
---|
[53002] | 4738 | OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE,
|
---|
| 4739 | supdrvNtProtectCallback_ProcessHandlePre,
|
---|
| 4740 | supdrvNtProtectCallback_ProcessHandlePost,
|
---|
| 4741 | },
|
---|
| 4742 | {
|
---|
[62677] | 4743 | 0, /* PsThreadType - imported, need runtime init, better do it explicitly. */
|
---|
[53002] | 4744 | OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE,
|
---|
| 4745 | supdrvNtProtectCallback_ThreadHandlePre,
|
---|
| 4746 | supdrvNtProtectCallback_ThreadHandlePost,
|
---|
| 4747 | },
|
---|
| 4748 | };
|
---|
[62677] | 4749 | s_aObOperations[0].ObjectType = PsProcessType;
|
---|
| 4750 | s_aObOperations[1].ObjectType = PsThreadType;
|
---|
| 4751 |
|
---|
[53002] | 4752 | static OB_CALLBACK_REGISTRATION s_ObCallbackReg =
|
---|
[51770] | 4753 | {
|
---|
[53002] | 4754 | /* .Version = */ OB_FLT_REGISTRATION_VERSION,
|
---|
| 4755 | /* .OperationRegistrationCount = */ RT_ELEMENTS(s_aObOperations),
|
---|
| 4756 | /* .Altitude.Length = */ 0,
|
---|
| 4757 | /* .Altitude.MaximumLength = */ 0,
|
---|
| 4758 | /* .Altitude.Buffer = */ NULL,
|
---|
| 4759 | /* .RegistrationContext = */ NULL,
|
---|
| 4760 | /* .OperationRegistration = */ &s_aObOperations[0]
|
---|
| 4761 | };
|
---|
| 4762 | static WCHAR const *s_apwszAltitudes[] = /** @todo get a valid number */
|
---|
| 4763 | {
|
---|
| 4764 | L"48596.98940", L"46935.19485", L"49739.39704", L"40334.74976",
|
---|
| 4765 | L"66667.98940", L"69888.19485", L"69889.39704", L"60364.74976",
|
---|
| 4766 | L"85780.98940", L"88978.19485", L"89939.39704", L"80320.74976",
|
---|
| 4767 | L"329879.98940", L"326787.19485", L"328915.39704", L"320314.74976",
|
---|
| 4768 | };
|
---|
[51770] | 4769 |
|
---|
[53002] | 4770 | rcNt = STATUS_FLT_INSTANCE_ALTITUDE_COLLISION;
|
---|
| 4771 | for (uint32_t i = 0; i < RT_ELEMENTS(s_apwszAltitudes) && rcNt == STATUS_FLT_INSTANCE_ALTITUDE_COLLISION; i++)
|
---|
| 4772 | {
|
---|
| 4773 | s_ObCallbackReg.Altitude.Buffer = (WCHAR *)s_apwszAltitudes[i];
|
---|
| 4774 | s_ObCallbackReg.Altitude.Length = (uint16_t)RTUtf16Len(s_apwszAltitudes[i]) * sizeof(WCHAR);
|
---|
| 4775 | s_ObCallbackReg.Altitude.MaximumLength = s_ObCallbackReg.Altitude.Length + sizeof(WCHAR);
|
---|
[51770] | 4776 |
|
---|
[53002] | 4777 | rcNt = g_pfnObRegisterCallbacks(&s_ObCallbackReg, &g_pvObCallbacksCookie);
|
---|
| 4778 | if (NT_SUCCESS(rcNt))
|
---|
| 4779 | {
|
---|
| 4780 | /*
|
---|
| 4781 | * Happy ending.
|
---|
| 4782 | */
|
---|
| 4783 | return STATUS_SUCCESS;
|
---|
| 4784 | }
|
---|
[51770] | 4785 | }
|
---|
[53002] | 4786 | LogRel(("vboxdrv: ObRegisterCallbacks failed with rcNt=%#x\n", rcNt));
|
---|
| 4787 | g_pvObCallbacksCookie = NULL;
|
---|
[51770] | 4788 | }
|
---|
[53002] | 4789 | else
|
---|
| 4790 | {
|
---|
| 4791 | /*
|
---|
| 4792 | * For the time being, we do not implement extra process
|
---|
| 4793 | * protection on pre-Vista-SP1 systems as they are lacking
|
---|
| 4794 | * necessary KPIs. XP is end of life, we do not wish to
|
---|
| 4795 | * spend more time on it, so we don't put up a fuss there.
|
---|
| 4796 | * Vista users without SP1 can install SP1 (or later), darn it,
|
---|
| 4797 | * so refuse to load.
|
---|
| 4798 | */
|
---|
| 4799 | /** @todo Hack up an XP solution - will require hooking kernel APIs or doing bad
|
---|
| 4800 | * stuff to a couple of object types. */
|
---|
[51770] | 4801 | # ifndef VBOX_WITH_VISTA_NO_SP
|
---|
[53002] | 4802 | if (g_uNtVerCombined >= SUP_NT_VER_VISTA)
|
---|
[51770] | 4803 | # else
|
---|
[53002] | 4804 | if (g_uNtVerCombined >= SUP_MAKE_NT_VER_COMBINED(6, 0, 6001, 0, 0))
|
---|
[51770] | 4805 | # endif
|
---|
[53002] | 4806 | {
|
---|
| 4807 | DbgPrint("vboxdrv: ObRegisterCallbacks was not found. Please make sure you got the latest updates and service packs installed\n");
|
---|
| 4808 | rcNt = STATUS_SXS_VERSION_CONFLICT;
|
---|
| 4809 | }
|
---|
| 4810 | else
|
---|
| 4811 | {
|
---|
| 4812 | Log(("vboxdrv: ObRegisterCallbacks was not found; ignored pre-Vista\n"));
|
---|
| 4813 | return rcNt = STATUS_SUCCESS;
|
---|
| 4814 | }
|
---|
| 4815 | g_pvObCallbacksCookie = NULL;
|
---|
[51770] | 4816 | }
|
---|
[53002] | 4817 |
|
---|
| 4818 | /*
|
---|
| 4819 | * Drop process create/term notifications.
|
---|
| 4820 | */
|
---|
| 4821 | if (g_pfnPsSetCreateProcessNotifyRoutineEx)
|
---|
| 4822 | g_pfnPsSetCreateProcessNotifyRoutineEx(supdrvNtProtectCallback_ProcessCreateNotifyEx, TRUE /*fRemove*/);
|
---|
[51770] | 4823 | else
|
---|
[53002] | 4824 | PsSetCreateProcessNotifyRoutine(supdrvNtProtectCallback_ProcessCreateNotify, TRUE /*fRemove*/);
|
---|
[51770] | 4825 | }
|
---|
| 4826 | else
|
---|
[53002] | 4827 | LogRel(("vboxdrv: PsSetCreateProcessNotifyRoutine%s failed with rcNt=%#x\n",
|
---|
| 4828 | g_pfnPsSetCreateProcessNotifyRoutineEx ? "Ex" : "", rcNt));
|
---|
| 4829 | supHardenedWinTermImageVerifier();
|
---|
[51770] | 4830 | }
|
---|
| 4831 | else
|
---|
[53002] | 4832 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 4833 |
|
---|
| 4834 | RTSemMutexDestroy(g_hErrorInfoLock);
|
---|
| 4835 | g_hErrorInfoLock = NIL_RTSEMMUTEX;
|
---|
[51770] | 4836 | }
|
---|
| 4837 | else
|
---|
| 4838 | rcNt = VBoxDrvNtErr2NtStatus(rc);
|
---|
| 4839 |
|
---|
| 4840 | RTSpinlockDestroy(g_hNtProtectLock);
|
---|
| 4841 | g_NtProtectTree = NIL_RTSPINLOCK;
|
---|
| 4842 | return rcNt;
|
---|
| 4843 | }
|
---|
| 4844 |
|
---|
| 4845 | #endif /* VBOX_WITH_HARDENING */
|
---|
| 4846 |
|
---|