1 | /** @file
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2 | *
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3 | * VBoxGuest -- VirtualBox Win32 guest support driver
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4 | *
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5 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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6 | *
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7 | * This file is part of VirtualBox Open Source Edition (OSE), as
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8 | * available from http://www.virtualbox.org. This file is free software;
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9 | * you can redistribute it and/or modify it under the terms of the GNU
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10 | * General Public License (GPL) as published by the Free Software
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11 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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12 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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13 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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14 | *
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15 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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16 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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17 | * additional information or have any questions.
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18 | */
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19 |
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20 | // enable backdoor logging
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21 | //#define LOG_ENABLED
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22 |
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23 | /*******************************************************************************
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24 | * Header Files *
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25 | *******************************************************************************/
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26 | #include "VBoxGuest_Internal.h"
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27 | #ifdef TARGET_NT4
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28 | #include "NTLegacy.h"
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29 | #else
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30 | #include "VBoxGuestPnP.h"
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31 | #endif
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32 | #include "Helper.h"
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33 | #include <excpt.h>
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34 | #include <VBox/err.h>
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35 | #include <iprt/assert.h>
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36 | #include <iprt/asm.h>
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37 | #include <stdio.h>
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38 | #include <VBox/VBoxGuestLib.h>
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39 | #include <VBoxGuestInternal.h>
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40 |
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41 | #ifdef TARGET_NT4
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42 | /* XP DDK #defines ExFreePool to ExFreePoolWithTag. The latter does not exist on NT4, so...
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43 | * The same for ExAllocatePool.
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44 | */
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45 | #undef ExAllocatePool
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46 | #undef ExFreePool
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47 | #endif
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48 |
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49 | /*******************************************************************************
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50 | * Defined Constants And Macros *
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51 | *******************************************************************************/
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52 |
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53 |
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54 | /*******************************************************************************
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55 | * Internal Functions *
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56 | *******************************************************************************/
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57 | extern "C"
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58 | {
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59 | static NTSTATUS VBoxGuestAddDevice(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj);
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60 | static void VBoxGuestUnload(PDRIVER_OBJECT pDrvObj);
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61 | static NTSTATUS VBoxGuestCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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62 | static NTSTATUS VBoxGuestClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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63 | static NTSTATUS VBoxGuestDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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64 | static NTSTATUS VBoxGuestSystemControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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65 | static NTSTATUS VBoxGuestShutdown(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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66 | static NTSTATUS VBoxGuestNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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67 | static VOID vboxWorkerThread(PVOID context);
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68 | static VOID reserveHypervisorMemory(PVBOXGUESTDEVEXT pDevExt);
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69 | static VOID vboxIdleThread(PVOID context);
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70 | }
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71 |
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72 |
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73 | /*******************************************************************************
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74 | * Exported Functions *
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75 | *******************************************************************************/
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76 | __BEGIN_DECLS
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77 | ULONG DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath);
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78 | __END_DECLS
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79 |
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80 | #ifdef ALLOC_PRAGMA
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81 | #pragma alloc_text (INIT, DriverEntry)
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82 | #pragma alloc_text (PAGE, createThreads)
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83 | #pragma alloc_text (PAGE, unreserveHypervisorMemory)
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84 | #pragma alloc_text (PAGE, VBoxGuestAddDevice)
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85 | #pragma alloc_text (PAGE, VBoxGuestUnload)
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86 | #pragma alloc_text (PAGE, VBoxGuestCreate)
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87 | #pragma alloc_text (PAGE, VBoxGuestClose)
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88 | #pragma alloc_text (PAGE, VBoxGuestDeviceControl)
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89 | #pragma alloc_text (PAGE, VBoxGuestShutdown)
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90 | #pragma alloc_text (PAGE, VBoxGuestNotSupportedStub)
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91 | /* Note: at least the isr handler should be in non-pageable memory! */
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92 | /*#pragma alloc_text (PAGE, VBoxGuestDpcHandler)
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93 | #pragma alloc_text (PAGE, VBoxGuestIsrHandler) */
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94 | #pragma alloc_text (PAGE, vboxWorkerThread)
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95 | #pragma alloc_text (PAGE, reserveHypervisorMemory)
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96 | #pragma alloc_text (PAGE, vboxIdleThread)
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97 | #endif
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98 |
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99 | winVersion_t winVersion;
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100 |
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101 | /**
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102 | * Driver entry point.
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103 | *
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104 | * @returns appropriate status code.
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105 | * @param pDrvObj Pointer to driver object.
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106 | * @param pRegPath Registry base path.
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107 | */
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108 | ULONG DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)
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109 | {
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110 | NTSTATUS rc = STATUS_SUCCESS;
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111 |
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112 | dprintf(("VBoxGuest::DriverEntry. Driver built: %s %s\n", __DATE__, __TIME__));
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113 |
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114 | ULONG majorVersion;
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115 | ULONG minorVersion;
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116 | ULONG buildNumber;
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117 | PsGetVersion(&majorVersion, &minorVersion, &buildNumber, NULL);
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118 | dprintf(("VBoxGuest::DriverEntry: running on Windows NT version %d.%d, build %d\n", majorVersion, minorVersion, buildNumber));
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119 | switch (majorVersion)
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120 | {
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121 | case 6:
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122 | winVersion = WINVISTA;
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123 | break;
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124 | case 5:
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125 | switch (minorVersion)
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126 | {
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127 | case 2:
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128 | winVersion = WIN2K3;
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129 | break;
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130 | case 1:
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131 | winVersion = WINXP;
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132 | break;
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133 | case 0:
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134 | winVersion = WIN2K;
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135 | break;
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136 | default:
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137 | dprintf(("VBoxGuest::DriverEntry: unknown version of Windows, refusing!\n"));
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138 | return STATUS_DRIVER_UNABLE_TO_LOAD;
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139 | }
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140 | break;
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141 | case 4:
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142 | winVersion = WINNT4;
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143 | break;
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144 | default:
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145 | dprintf(("VBoxGuest::DriverEntry: NT4 required!\n"));
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146 | return STATUS_DRIVER_UNABLE_TO_LOAD;
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147 | }
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148 |
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149 | /*
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150 | * Setup the driver entry points in pDrvObj.
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151 | */
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152 | pDrvObj->DriverUnload = VBoxGuestUnload;
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153 | pDrvObj->MajorFunction[IRP_MJ_CREATE] = VBoxGuestCreate;
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154 | pDrvObj->MajorFunction[IRP_MJ_CLOSE] = VBoxGuestClose;
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155 | pDrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = VBoxGuestDeviceControl;
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156 | pDrvObj->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = VBoxGuestDeviceControl;
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157 | pDrvObj->MajorFunction[IRP_MJ_SHUTDOWN] = VBoxGuestShutdown;
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158 | pDrvObj->MajorFunction[IRP_MJ_READ] = VBoxGuestNotSupportedStub;
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159 | pDrvObj->MajorFunction[IRP_MJ_WRITE] = VBoxGuestNotSupportedStub;
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160 | #ifdef TARGET_NT4
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161 | rc = ntCreateDevice(pDrvObj, NULL, pRegPath);
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162 | #else
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163 | pDrvObj->MajorFunction[IRP_MJ_PNP] = VBoxGuestPnP;
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164 | pDrvObj->MajorFunction[IRP_MJ_POWER] = VBoxGuestPower;
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165 | pDrvObj->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = VBoxGuestSystemControl;
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166 | pDrvObj->DriverExtension->AddDevice = (PDRIVER_ADD_DEVICE)VBoxGuestAddDevice;
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167 | #endif
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168 |
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169 | dprintf(("VBoxGuest::DriverEntry returning %#x\n", rc));
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170 | return rc;
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171 | }
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172 |
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173 | #ifndef TARGET_NT4
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174 | /**
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175 | * Handle request from the Plug & Play subsystem
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176 | *
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177 | * @returns NT status code
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178 | * @param pDrvObj Driver object
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179 | * @param pDevObj Device object
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180 | */
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181 | static NTSTATUS VBoxGuestAddDevice(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj)
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182 | {
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183 | NTSTATUS rc;
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184 | dprintf(("VBoxGuest::VBoxGuestAddDevice\n"));
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185 |
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186 | /*
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187 | * Create device.
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188 | */
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189 | PDEVICE_OBJECT deviceObject = NULL;
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190 | UNICODE_STRING devName;
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191 | RtlInitUnicodeString(&devName, VBOXGUEST_DEVICE_NAME_NT);
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192 | rc = IoCreateDevice(pDrvObj, sizeof(VBOXGUESTDEVEXT), &devName, FILE_DEVICE_UNKNOWN, 0, FALSE, &deviceObject);
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193 | if (!NT_SUCCESS(rc))
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194 | {
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195 | dprintf(("VBoxGuest::VBoxGuestAddDevice: IoCreateDevice failed with rc=%#x!\n", rc));
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196 | return rc;
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197 | }
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198 | UNICODE_STRING win32Name;
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199 | RtlInitUnicodeString(&win32Name, VBOXGUEST_DEVICE_NAME_DOS);
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200 | rc = IoCreateSymbolicLink(&win32Name, &devName);
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201 | if (!NT_SUCCESS(rc))
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202 | {
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203 | dprintf(("VBoxGuest::VBoxGuestAddDevice: IoCreateSymbolicLink failed with rc=%#x!\n", rc));
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204 | IoDeleteDevice(deviceObject);
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205 | return rc;
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206 | }
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207 |
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208 | /*
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209 | * Setup the device extension.
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210 | */
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211 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)deviceObject->DeviceExtension;
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212 | RtlZeroMemory(pDevExt, sizeof(VBOXGUESTDEVEXT));
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213 |
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214 | pDevExt->deviceObject = deviceObject;
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215 | pDevExt->devState = STOPPED;
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216 |
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217 | pDevExt->nextLowerDriver = IoAttachDeviceToDeviceStack(deviceObject, pDevObj);
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218 | if (pDevExt->nextLowerDriver == NULL)
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219 | {
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220 | dprintf(("VBoxGuest::VBoxGuestAddDevice: IoAttachDeviceToDeviceStack did not give a nextLowerDrive\n"));
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221 | IoDeleteSymbolicLink(&win32Name);
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222 | IoDeleteDevice(deviceObject);
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223 | return STATUS_DEVICE_NOT_CONNECTED;
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224 | }
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225 |
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226 | // driver is ready now
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227 | deviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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228 |
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229 | dprintf(("VBoxGuest::VBoxGuestAddDevice: returning with rc = 0x%x\n", rc));
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230 | return rc;
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231 | }
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232 | #endif
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233 |
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234 |
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235 | /**
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236 | * Unload the driver.
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237 | *
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238 | * @param pDrvObj Driver object.
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239 | */
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240 | void VBoxGuestUnload(PDRIVER_OBJECT pDrvObj)
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241 | {
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242 | dprintf(("VBoxGuest::VBoxGuestUnload\n"));
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243 | #ifdef TARGET_NT4
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244 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDrvObj->DeviceObject->DeviceExtension;
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245 | unreserveHypervisorMemory(pDevExt);
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246 | if (pDevExt->workerThread)
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247 | {
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248 | dprintf(("VBoxGuest::VBoxGuestUnload: waiting for the worker thread to terminate...\n"));
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249 | pDevExt->stopThread = TRUE;
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250 | KeSetEvent(&pDevExt->workerThreadRequest, 0, FALSE);
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251 | KeWaitForSingleObject(pDevExt->workerThread,
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252 | Executive, KernelMode, FALSE, NULL);
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253 | dprintf(("VBoxGuest::VBoxGuestUnload: returned from KeWaitForSingleObject for worker thread\n"));
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254 | }
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255 | if (pDevExt->idleThread)
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256 | {
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257 | dprintf(("VBoxGuest::VBoxGuestUnload: waiting for the idle thread to terminate...\n"));
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258 | pDevExt->stopThread = TRUE;
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259 | KeWaitForSingleObject(pDevExt->idleThread,
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260 | Executive, KernelMode, FALSE, NULL);
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261 | dprintf(("VBoxGuest::VBoxGuestUnload: returned from KeWaitForSingleObject for idle thread\n"));
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262 | }
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263 |
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264 | hlpVBoxUnmapVMMDevMemory (pDevExt);
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265 |
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266 | VBoxCleanupMemBalloon(pDevExt);
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267 |
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268 | /*
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269 | * I don't think it's possible to unload a driver which processes have
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270 | * opened, at least we'll blindly assume that here.
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271 | */
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272 | UNICODE_STRING win32Name;
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273 | RtlInitUnicodeString(&win32Name, VBOXGUEST_DEVICE_NAME_DOS);
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274 | NTSTATUS rc = IoDeleteSymbolicLink(&win32Name);
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275 | IoDeleteDevice(pDrvObj->DeviceObject);
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276 | #endif
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277 | dprintf(("VBoxGuest::VBoxGuestUnload: returning\n"));
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278 | }
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279 |
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280 |
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281 | /**
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282 | * Create (i.e. Open) file entry point.
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283 | *
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284 | * @param pDevObj Device object.
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285 | * @param pIrp Request packet.
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286 | */
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287 | NTSTATUS VBoxGuestCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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288 | {
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289 | dprintf(("VBoxGuest::VBoxGuestCreate\n"));
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290 |
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291 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
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292 | PFILE_OBJECT pFileObj = pStack->FileObject;
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293 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
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294 |
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295 | /*
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296 | * We are not remotely similar to a directory...
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297 | * (But this is possible.)
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298 | */
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299 | if (pStack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
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300 | {
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301 | dprintf(("VBoxGuest::VBoxGuestCreate: we're not a directory!\n"));
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302 | pIrp->IoStatus.Status = STATUS_NOT_A_DIRECTORY;
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303 | pIrp->IoStatus.Information = 0;
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304 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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305 | return STATUS_NOT_A_DIRECTORY;
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306 | }
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307 |
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308 | NTSTATUS rcNt = pIrp->IoStatus.Status = STATUS_SUCCESS;
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309 | pIrp->IoStatus.Information = 0;
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310 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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311 |
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312 | dprintf(("VBoxGuest::VBoxGuestCreate: returning 0x%x\n", rcNt));
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313 | return rcNt;
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314 | }
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315 |
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316 |
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317 | /**
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318 | * Close file entry point.
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319 | *
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320 | * @param pDevObj Device object.
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321 | * @param pIrp Request packet.
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322 | */
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323 | NTSTATUS VBoxGuestClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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324 | {
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325 | dprintf(("VBoxGuest::VBoxGuestClose\n"));
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326 |
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327 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
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328 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
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329 | PFILE_OBJECT pFileObj = pStack->FileObject;
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330 | dprintf(("VBoxGuest::VBoxGuestClose: pDevExt=%p pFileObj=%p pSession=%p\n",
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331 | pDevExt, pFileObj, pFileObj->FsContext));
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332 |
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333 | pFileObj->FsContext = NULL;
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334 | pIrp->IoStatus.Information = 0;
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335 | pIrp->IoStatus.Status = STATUS_SUCCESS;
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336 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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337 |
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338 | return STATUS_SUCCESS;
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339 | }
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340 |
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341 | #ifdef VBOX_HGCM
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342 | DECLVBGL(void) VBoxHGCMCallback (VMMDevHGCMRequestHeader *pHeader, void *pvData, uint32_t u32Data)
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343 | {
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344 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pvData;
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345 |
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346 | dprintf(("VBoxHGCMCallback\n"));
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347 |
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348 | /* Possible problem with request completion right between the fu32Flags check and KeWaitForSingleObject
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349 | * call; introduce a timeout to make sure we don't wait indefinitely.
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350 | */
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351 |
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352 | while ((pHeader->fu32Flags & VBOX_HGCM_REQ_DONE) == 0)
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353 | {
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354 | /* Specifying UserMode so killing the user process will abort the wait.
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355 | * @todo Since VbglGRCancel is not yet implemented, the wait itself must
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356 | * be not interruptible. The wait can be interrupted only when the
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357 | * calling process is being killed.
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358 | * When alertable is TRUE, the wait sometimes ends with STATUS_USER_APC.
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359 | */
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360 | NTSTATUS rc = KeWaitForSingleObject (&pDevExt->keventNotification, Executive,
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361 | UserMode,
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362 | FALSE, /* Not Alertable */
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363 | &pDevExt->HGCMWaitTimeout
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364 | );
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365 | dprintf(("VBoxHGCMCallback: Wait returned %d fu32Flags=%x\n", rc, pHeader->fu32Flags));
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366 |
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367 | if (rc == STATUS_TIMEOUT)
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368 | continue;
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369 |
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370 | if (rc != STATUS_WAIT_0)
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371 | {
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372 | dprintf(("VBoxHGCMCallback: The external event was signalled or the wait timed out or terminated.\n"));
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373 | break;
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374 | }
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375 |
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376 | dprintf(("VBoxHGCMCallback: fu32Flags = %08X\n", pHeader->fu32Flags));
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377 | }
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378 | return;
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379 | }
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380 |
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381 | NTSTATUS vboxHGCMVerifyIOBuffers (PIO_STACK_LOCATION pStack, unsigned cb)
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382 | {
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383 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength < cb)
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384 | {
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385 | dprintf(("VBoxGuest::vboxHGCMVerifyIOBuffers: OutputBufferLength %d < %d\n",
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386 | pStack->Parameters.DeviceIoControl.OutputBufferLength, cb));
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387 | return STATUS_INVALID_PARAMETER;
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388 | }
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389 |
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390 | if (pStack->Parameters.DeviceIoControl.InputBufferLength < cb)
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391 | {
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392 | dprintf(("VBoxGuest::vboxHGCMVerifyIOBuffers: InputBufferLength %d < %d\n",
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393 | pStack->Parameters.DeviceIoControl.InputBufferLength, cb));
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394 | return STATUS_INVALID_PARAMETER;
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395 | }
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396 |
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397 | return STATUS_SUCCESS;
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398 | }
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399 |
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400 | #endif /* VBOX_HGCM */
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401 |
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402 | static bool IsPowerOfTwo (uint32_t val)
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403 | {
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404 | return (val & (val - 1)) == 0;
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405 | }
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406 |
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407 | static bool CtlGuestFilterMask (uint32_t u32OrMask, uint32_t u32NotMask)
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408 | {
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409 | bool result = false;
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410 | VMMDevCtlGuestFilterMask *req;
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411 | int rc = VbglGRAlloc ((VMMDevRequestHeader **) &req, sizeof (*req),
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412 | VMMDevReq_CtlGuestFilterMask);
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413 |
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414 | if (VBOX_SUCCESS (rc))
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415 | {
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416 | req->u32OrMask = u32OrMask;
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417 | req->u32NotMask = u32NotMask;
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418 |
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419 | rc = VbglGRPerform (&req->header);
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420 | if (VBOX_FAILURE (rc) || VBOX_FAILURE (req->header.rc))
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421 | {
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422 | dprintf (("VBoxGuest::VBoxGuestDeviceControl: error issuing request to VMMDev! "
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423 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
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424 | }
|
---|
425 | else
|
---|
426 | {
|
---|
427 | result = true;
|
---|
428 | }
|
---|
429 | VbglGRFree (&req->header);
|
---|
430 | }
|
---|
431 |
|
---|
432 | return result;
|
---|
433 | }
|
---|
434 |
|
---|
435 | #ifdef VBOX_WITH_MANAGEMENT
|
---|
436 | static int VBoxGuestSetBalloonSize(PVBOXGUESTDEVEXT pDevExt, uint32_t u32BalloonSize)
|
---|
437 | {
|
---|
438 | VMMDevChangeMemBalloon *req = NULL;
|
---|
439 | int rc = VINF_SUCCESS;
|
---|
440 |
|
---|
441 | if (u32BalloonSize > pDevExt->MemBalloon.cMaxBalloons)
|
---|
442 | {
|
---|
443 | AssertMsgFailed(("VBoxGuestSetBalloonSize illegal balloon size %d (max=%d)\n", u32BalloonSize, pDevExt->MemBalloon.cMaxBalloons));
|
---|
444 | return VERR_INVALID_PARAMETER;
|
---|
445 | }
|
---|
446 |
|
---|
447 | if (u32BalloonSize == pDevExt->MemBalloon.cBalloons)
|
---|
448 | return VINF_SUCCESS; /* nothing to do */
|
---|
449 |
|
---|
450 | /* Allocate request packet */
|
---|
451 | rc = VbglGRAlloc((VMMDevRequestHeader **)&req, RT_OFFSETOF(VMMDevChangeMemBalloon, aPhysPage[VMMDEV_MEMORY_BALLOON_CHUNK_PAGES]), VMMDevReq_ChangeMemBalloon);
|
---|
452 | if (VBOX_FAILURE(rc))
|
---|
453 | return rc;
|
---|
454 |
|
---|
455 | vmmdevInitRequest(&req->header, VMMDevReq_ChangeMemBalloon);
|
---|
456 |
|
---|
457 | if (u32BalloonSize > pDevExt->MemBalloon.cBalloons)
|
---|
458 | {
|
---|
459 | /* inflate */
|
---|
460 | for (uint32_t i=pDevExt->MemBalloon.cBalloons;i<u32BalloonSize;i++)
|
---|
461 | {
|
---|
462 | #ifndef TARGET_NT4
|
---|
463 | /*
|
---|
464 | * Use MmAllocatePagesForMdl to specify the range of physical addresses we wish to use.
|
---|
465 | */
|
---|
466 | PHYSICAL_ADDRESS Zero;
|
---|
467 | PHYSICAL_ADDRESS HighAddr;
|
---|
468 | Zero.QuadPart = 0;
|
---|
469 | HighAddr.QuadPart = _4G - 1;
|
---|
470 | PMDL pMdl = MmAllocatePagesForMdl(Zero, HighAddr, Zero, VMMDEV_MEMORY_BALLOON_CHUNK_SIZE);
|
---|
471 | if (pMdl)
|
---|
472 | {
|
---|
473 | if (MmGetMdlByteCount(pMdl) < VMMDEV_MEMORY_BALLOON_CHUNK_SIZE)
|
---|
474 | {
|
---|
475 | MmFreePagesFromMdl(pMdl);
|
---|
476 | ExFreePool(pMdl);
|
---|
477 | rc = VERR_NO_MEMORY;
|
---|
478 | goto end;
|
---|
479 | }
|
---|
480 | }
|
---|
481 | #else
|
---|
482 | PVOID pvBalloon;
|
---|
483 | pvBalloon = ExAllocatePool(PagedPool, VMMDEV_MEMORY_BALLOON_CHUNK_SIZE);
|
---|
484 | if (!pvBalloon)
|
---|
485 | {
|
---|
486 | rc = VERR_NO_MEMORY;
|
---|
487 | goto end;
|
---|
488 | }
|
---|
489 |
|
---|
490 | PMDL pMdl = IoAllocateMdl (pvBalloon, VMMDEV_MEMORY_BALLOON_CHUNK_SIZE, FALSE, FALSE, NULL);
|
---|
491 | if (pMdl == NULL)
|
---|
492 | {
|
---|
493 | rc = VERR_NO_MEMORY;
|
---|
494 | ExFreePool(pvBalloon);
|
---|
495 | AssertMsgFailed(("IoAllocateMdl %VGv %x failed!!\n", pvBalloon, VMMDEV_MEMORY_BALLOON_CHUNK_SIZE));
|
---|
496 | goto end;
|
---|
497 | }
|
---|
498 | else
|
---|
499 | {
|
---|
500 | __try {
|
---|
501 | /* Calls to MmProbeAndLockPages must be enclosed in a try/except block. */
|
---|
502 | MmProbeAndLockPages (pMdl, KernelMode, IoModifyAccess);
|
---|
503 | }
|
---|
504 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
505 | {
|
---|
506 | dprintf(("MmProbeAndLockPages failed!\n"));
|
---|
507 | rc = VERR_NO_MEMORY;
|
---|
508 | IoFreeMdl (pMdl);
|
---|
509 | ExFreePool(pvBalloon);
|
---|
510 | goto end;
|
---|
511 | }
|
---|
512 | }
|
---|
513 | #endif
|
---|
514 |
|
---|
515 | PPFN_NUMBER pPageDesc = MmGetMdlPfnArray(pMdl);
|
---|
516 |
|
---|
517 | /* Copy manually as RTGCPHYS is always 64 bits */
|
---|
518 | for (uint32_t j=0;j<VMMDEV_MEMORY_BALLOON_CHUNK_PAGES;j++)
|
---|
519 | req->aPhysPage[j] = pPageDesc[j];
|
---|
520 |
|
---|
521 | req->header.size = RT_OFFSETOF(VMMDevChangeMemBalloon, aPhysPage[VMMDEV_MEMORY_BALLOON_CHUNK_PAGES]);
|
---|
522 | req->cPages = VMMDEV_MEMORY_BALLOON_CHUNK_PAGES;
|
---|
523 | req->fInflate = true;
|
---|
524 |
|
---|
525 | rc = VbglGRPerform(&req->header);
|
---|
526 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
527 | {
|
---|
528 | dprintf(("VBoxGuest::VBoxGuestSetBalloonSize: error issuing request to VMMDev!"
|
---|
529 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
530 |
|
---|
531 | #ifndef TARGET_NT4
|
---|
532 | MmFreePagesFromMdl(pMdl);
|
---|
533 | ExFreePool(pMdl);
|
---|
534 | #else
|
---|
535 | IoFreeMdl (pMdl);
|
---|
536 | ExFreePool(pvBalloon);
|
---|
537 | #endif
|
---|
538 | goto end;
|
---|
539 | }
|
---|
540 | else
|
---|
541 | {
|
---|
542 | #ifndef TARGET_NT4
|
---|
543 | dprintf(("VBoxGuest::VBoxGuestSetBalloonSize %d MB added chunk at %x\n", i, pMdl));
|
---|
544 | #else
|
---|
545 | dprintf(("VBoxGuest::VBoxGuestSetBalloonSize %d MB added chunk at %x\n", i, pvBalloon));
|
---|
546 | #endif
|
---|
547 | pDevExt->MemBalloon.paMdlMemBalloon[i] = pMdl;
|
---|
548 | pDevExt->MemBalloon.cBalloons++;
|
---|
549 | }
|
---|
550 | }
|
---|
551 | }
|
---|
552 | else
|
---|
553 | {
|
---|
554 | /* deflate */
|
---|
555 | for (uint32_t _i=pDevExt->MemBalloon.cBalloons;_i>u32BalloonSize;_i--)
|
---|
556 | {
|
---|
557 | uint32_t index = _i - 1;
|
---|
558 | PMDL pMdl = pDevExt->MemBalloon.paMdlMemBalloon[index];
|
---|
559 |
|
---|
560 | Assert(pMdl);
|
---|
561 | if (pMdl)
|
---|
562 | {
|
---|
563 | #ifdef TARGET_NT4
|
---|
564 | PVOID pvBalloon = MmGetMdlVirtualAddress(pMdl);
|
---|
565 | #endif
|
---|
566 |
|
---|
567 | PPFN_NUMBER pPageDesc = MmGetMdlPfnArray(pMdl);
|
---|
568 |
|
---|
569 | /* Copy manually as RTGCPHYS is always 64 bits */
|
---|
570 | for (uint32_t j=0;j<VMMDEV_MEMORY_BALLOON_CHUNK_PAGES;j++)
|
---|
571 | req->aPhysPage[j] = pPageDesc[j];
|
---|
572 |
|
---|
573 | req->header.size = RT_OFFSETOF(VMMDevChangeMemBalloon, aPhysPage[VMMDEV_MEMORY_BALLOON_CHUNK_PAGES]);
|
---|
574 | req->cPages = VMMDEV_MEMORY_BALLOON_CHUNK_PAGES;
|
---|
575 | req->fInflate = false;
|
---|
576 |
|
---|
577 | rc = VbglGRPerform(&req->header);
|
---|
578 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
579 | {
|
---|
580 | AssertMsgFailed(("VBoxGuest::VBoxGuestSetBalloonSize: error issuing request to VMMDev! rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
581 | break;
|
---|
582 | }
|
---|
583 |
|
---|
584 | /* Free the ballooned memory */
|
---|
585 | #ifndef TARGET_NT4
|
---|
586 | dprintf(("VBoxGuest::VBoxGuestSetBalloonSize %d MB free chunk at %x\n", index, pMdl));
|
---|
587 | MmFreePagesFromMdl(pMdl);
|
---|
588 | ExFreePool(pMdl);
|
---|
589 | #else
|
---|
590 | dprintf(("VBoxGuest::VBoxGuestSetBalloonSize %d MB free chunk at %x\n", index, pvBalloon));
|
---|
591 | MmUnlockPages (pMdl);
|
---|
592 | IoFreeMdl (pMdl);
|
---|
593 | ExFreePool(pvBalloon);
|
---|
594 | #endif
|
---|
595 |
|
---|
596 | pDevExt->MemBalloon.paMdlMemBalloon[index] = NULL;
|
---|
597 | pDevExt->MemBalloon.cBalloons--;
|
---|
598 | }
|
---|
599 | }
|
---|
600 | }
|
---|
601 | Assert(pDevExt->MemBalloon.cBalloons <= pDevExt->MemBalloon.cMaxBalloons);
|
---|
602 |
|
---|
603 | end:
|
---|
604 | VbglGRFree(&req->header);
|
---|
605 | return rc;
|
---|
606 | }
|
---|
607 |
|
---|
608 | static int VBoxGuestQueryMemoryBalloon(PVBOXGUESTDEVEXT pDevExt, ULONG *pMemBalloonSize)
|
---|
609 | {
|
---|
610 | /* just perform the request */
|
---|
611 | VMMDevGetMemBalloonChangeRequest *req = NULL;
|
---|
612 |
|
---|
613 | dprintf(("VBoxGuestQueryMemoryBalloon\n"));
|
---|
614 |
|
---|
615 | int rc = VbglGRAlloc((VMMDevRequestHeader **)&req, sizeof(VMMDevGetMemBalloonChangeRequest), VMMDevReq_GetMemBalloonChangeRequest);
|
---|
616 | vmmdevInitRequest(&req->header, VMMDevReq_GetMemBalloonChangeRequest);
|
---|
617 | req->eventAck = VMMDEV_EVENT_BALLOON_CHANGE_REQUEST;
|
---|
618 |
|
---|
619 | if (VBOX_SUCCESS(rc))
|
---|
620 | {
|
---|
621 | rc = VbglGRPerform(&req->header);
|
---|
622 |
|
---|
623 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
624 | {
|
---|
625 | dprintf(("VBoxGuest::VBoxGuestDeviceControl IOCTL_VBOXGUEST_CTL_CHECK_BALLOON: error issuing request to VMMDev!"
|
---|
626 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
627 | }
|
---|
628 | else
|
---|
629 | {
|
---|
630 | if (!pDevExt->MemBalloon.paMdlMemBalloon)
|
---|
631 | {
|
---|
632 | pDevExt->MemBalloon.cMaxBalloons = req->u32PhysMemSize;
|
---|
633 | pDevExt->MemBalloon.paMdlMemBalloon = (PMDL *)ExAllocatePool(PagedPool, req->u32PhysMemSize * sizeof(PMDL));
|
---|
634 | Assert(pDevExt->MemBalloon.paMdlMemBalloon);
|
---|
635 | if (!pDevExt->MemBalloon.paMdlMemBalloon)
|
---|
636 | return VERR_NO_MEMORY;
|
---|
637 | }
|
---|
638 | Assert(pDevExt->MemBalloon.cMaxBalloons == req->u32PhysMemSize);
|
---|
639 |
|
---|
640 | rc = VBoxGuestSetBalloonSize(pDevExt, req->u32BalloonSize);
|
---|
641 | /* ignore out of memory failures */
|
---|
642 | if (rc == VERR_NO_MEMORY)
|
---|
643 | rc = VINF_SUCCESS;
|
---|
644 |
|
---|
645 | if (pMemBalloonSize)
|
---|
646 | *pMemBalloonSize = pDevExt->MemBalloon.cBalloons;
|
---|
647 | }
|
---|
648 |
|
---|
649 | VbglGRFree(&req->header);
|
---|
650 | }
|
---|
651 | return rc;
|
---|
652 | }
|
---|
653 | #endif
|
---|
654 |
|
---|
655 | void VBoxInitMemBalloon(PVBOXGUESTDEVEXT pDevExt)
|
---|
656 | {
|
---|
657 | #ifdef VBOX_WITH_MANAGEMENT
|
---|
658 | ULONG dummy;
|
---|
659 |
|
---|
660 | pDevExt->MemBalloon.cBalloons = 0;
|
---|
661 | pDevExt->MemBalloon.cMaxBalloons = 0;
|
---|
662 | pDevExt->MemBalloon.paMdlMemBalloon = NULL;
|
---|
663 |
|
---|
664 | VBoxGuestQueryMemoryBalloon(pDevExt, &dummy);
|
---|
665 | #endif
|
---|
666 | }
|
---|
667 |
|
---|
668 | void VBoxCleanupMemBalloon(PVBOXGUESTDEVEXT pDevExt)
|
---|
669 | {
|
---|
670 | #ifdef VBOX_WITH_MANAGEMENT
|
---|
671 | if (pDevExt->MemBalloon.paMdlMemBalloon)
|
---|
672 | {
|
---|
673 | /* Clean up the memory balloon leftovers */
|
---|
674 | VBoxGuestSetBalloonSize(pDevExt, 0);
|
---|
675 | ExFreePool(pDevExt->MemBalloon.paMdlMemBalloon);
|
---|
676 | pDevExt->MemBalloon.paMdlMemBalloon = NULL;
|
---|
677 | }
|
---|
678 | Assert(pDevExt->MemBalloon.cBalloons == 0);
|
---|
679 | #endif
|
---|
680 | }
|
---|
681 |
|
---|
682 | /**
|
---|
683 | * Device I/O Control entry point.
|
---|
684 | *
|
---|
685 | * @param pDevObj Device object.
|
---|
686 | * @param pIrp Request packet.
|
---|
687 | */
|
---|
688 | NTSTATUS VBoxGuestDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
689 | {
|
---|
690 | dprintf(("VBoxGuest::VBoxGuestDeviceControl\n"));
|
---|
691 |
|
---|
692 | NTSTATUS Status = STATUS_SUCCESS;
|
---|
693 |
|
---|
694 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
|
---|
695 |
|
---|
696 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
|
---|
697 |
|
---|
698 | char *pBuf = (char *)pIrp->AssociatedIrp.SystemBuffer; /* all requests are buffered. */
|
---|
699 |
|
---|
700 | unsigned cbOut = 0;
|
---|
701 |
|
---|
702 | switch (pStack->Parameters.DeviceIoControl.IoControlCode)
|
---|
703 | {
|
---|
704 | case IOCTL_VBOXGUEST_GETVMMDEVPORT:
|
---|
705 | {
|
---|
706 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_GETVMMDEVPORT\n"));
|
---|
707 |
|
---|
708 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof (VBoxGuestPortInfo))
|
---|
709 | {
|
---|
710 | Status = STATUS_BUFFER_TOO_SMALL;
|
---|
711 | break;
|
---|
712 | }
|
---|
713 |
|
---|
714 | VBoxGuestPortInfo *portInfo = (VBoxGuestPortInfo*)pBuf;
|
---|
715 |
|
---|
716 | portInfo->portAddress = pDevExt->startPortAddress;
|
---|
717 | portInfo->pVMMDevMemory = pDevExt->pVMMDevMemory;
|
---|
718 |
|
---|
719 | cbOut = sizeof(VBoxGuestPortInfo);
|
---|
720 |
|
---|
721 | break;
|
---|
722 | }
|
---|
723 |
|
---|
724 | case IOCTL_VBOXGUEST_WAITEVENT:
|
---|
725 | {
|
---|
726 | /* Need to be extended to support multiple waiters for an event,
|
---|
727 | * array of counters for each event, event mask is computed, each
|
---|
728 | * time a wait event is arrived.
|
---|
729 | */
|
---|
730 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_WAITEVENT\n"));
|
---|
731 |
|
---|
732 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(VBoxGuestWaitEventInfo))
|
---|
733 | {
|
---|
734 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: OutputBufferLength %d < sizeof(VBoxGuestWaitEventInfo)\n",
|
---|
735 | pStack->Parameters.DeviceIoControl.OutputBufferLength, sizeof(VBoxGuestWaitEventInfo)));
|
---|
736 | Status = STATUS_BUFFER_TOO_SMALL;
|
---|
737 | break;
|
---|
738 | }
|
---|
739 |
|
---|
740 | if (pStack->Parameters.DeviceIoControl.InputBufferLength < sizeof(VBoxGuestWaitEventInfo)) {
|
---|
741 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: InputBufferLength %d < sizeof(VBoxGuestWaitEventInfo)\n",
|
---|
742 | pStack->Parameters.DeviceIoControl.InputBufferLength, sizeof(VBoxGuestWaitEventInfo)));
|
---|
743 | Status = STATUS_BUFFER_TOO_SMALL;
|
---|
744 | break;
|
---|
745 | }
|
---|
746 |
|
---|
747 | VBoxGuestWaitEventInfo *eventInfo = (VBoxGuestWaitEventInfo *)pBuf;
|
---|
748 |
|
---|
749 | if (!eventInfo->u32EventMaskIn || !IsPowerOfTwo (eventInfo->u32EventMaskIn)) {
|
---|
750 | dprintf (("VBoxGuest::VBoxGuestDeviceControl: Invalid input mask %#x\n",
|
---|
751 | eventInfo->u32EventMaskIn));
|
---|
752 | Status = STATUS_INVALID_PARAMETER;
|
---|
753 | break;
|
---|
754 | }
|
---|
755 |
|
---|
756 | eventInfo->u32EventFlagsOut = 0;
|
---|
757 | int iBitOffset = ASMBitFirstSetU32 (eventInfo->u32EventMaskIn) - 1;
|
---|
758 | bool fTimeout = (eventInfo->u32TimeoutIn != ~0L);
|
---|
759 |
|
---|
760 | dprintf (("mask = %d, iBitOffset = %d\n", iBitOffset, eventInfo->u32EventMaskIn));
|
---|
761 |
|
---|
762 | /* Possible problem with request completion right between the pending event check and KeWaitForSingleObject
|
---|
763 | * call; introduce a timeout (if none was specified) to make sure we don't wait indefinitely.
|
---|
764 | */
|
---|
765 | LARGE_INTEGER timeout;
|
---|
766 | timeout.QuadPart = (fTimeout) ? eventInfo->u32TimeoutIn : 250;
|
---|
767 | timeout.QuadPart *= -10000;
|
---|
768 |
|
---|
769 | NTSTATUS rc = STATUS_SUCCESS;
|
---|
770 |
|
---|
771 | for (;;)
|
---|
772 | {
|
---|
773 | bool fEventPending = ASMAtomicBitTestAndClear(&pDevExt->u32Events, iBitOffset);
|
---|
774 | if (fEventPending)
|
---|
775 | {
|
---|
776 | eventInfo->u32EventFlagsOut = 1 << iBitOffset;
|
---|
777 | break;
|
---|
778 | }
|
---|
779 |
|
---|
780 | rc = KeWaitForSingleObject (&pDevExt->keventNotification, Executive /** @todo UserRequest? */,
|
---|
781 | KernelMode, TRUE, &timeout);
|
---|
782 | dprintf(("IOCTL_VBOXGUEST_WAITEVENT: Wait returned %d -> event %x\n", rc, eventInfo->u32EventFlagsOut));
|
---|
783 |
|
---|
784 | if (!fTimeout && rc == STATUS_TIMEOUT)
|
---|
785 | continue;
|
---|
786 |
|
---|
787 | if (rc != STATUS_SUCCESS)
|
---|
788 | {
|
---|
789 | /* There was a timeout or wait was interrupted, etc. */
|
---|
790 | break;
|
---|
791 | }
|
---|
792 | }
|
---|
793 |
|
---|
794 | dprintf (("u32EventFlagsOut = %#x\n", eventInfo->u32EventFlagsOut));
|
---|
795 | cbOut = sizeof(VBoxGuestWaitEventInfo);
|
---|
796 | break;
|
---|
797 | }
|
---|
798 |
|
---|
799 | case IOCTL_VBOXGUEST_VMMREQUEST:
|
---|
800 | {
|
---|
801 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_VMMREQUEST\n"));
|
---|
802 |
|
---|
803 | #define CHECK_SIZE(s) \
|
---|
804 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength < s) \
|
---|
805 | { \
|
---|
806 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: OutputBufferLength %d < %d\n", \
|
---|
807 | pStack->Parameters.DeviceIoControl.OutputBufferLength, s)); \
|
---|
808 | Status = STATUS_BUFFER_TOO_SMALL; \
|
---|
809 | break; \
|
---|
810 | } \
|
---|
811 | if (pStack->Parameters.DeviceIoControl.InputBufferLength < s) { \
|
---|
812 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: InputBufferLength %d < %d\n", \
|
---|
813 | pStack->Parameters.DeviceIoControl.InputBufferLength, s)); \
|
---|
814 | Status = STATUS_BUFFER_TOO_SMALL; \
|
---|
815 | break; \
|
---|
816 | }
|
---|
817 |
|
---|
818 | /* get the request header */
|
---|
819 | CHECK_SIZE(sizeof(VMMDevRequestHeader));
|
---|
820 | VMMDevRequestHeader *requestHeader = (VMMDevRequestHeader *)pBuf;
|
---|
821 | if (!vmmdevGetRequestSize(requestHeader->requestType))
|
---|
822 | {
|
---|
823 | Status = STATUS_INVALID_PARAMETER;
|
---|
824 | break;
|
---|
825 | }
|
---|
826 | /* make sure the buffers suit the request */
|
---|
827 | CHECK_SIZE(vmmdevGetRequestSize(requestHeader->requestType));
|
---|
828 |
|
---|
829 | /* just perform the request */
|
---|
830 | VMMDevRequestHeader *req = NULL;
|
---|
831 |
|
---|
832 | int rc = VbglGRAlloc((VMMDevRequestHeader **)&req, requestHeader->size, requestHeader->requestType);
|
---|
833 |
|
---|
834 | if (VBOX_SUCCESS(rc))
|
---|
835 | {
|
---|
836 | /* copy the request information */
|
---|
837 | memcpy((void*)req, (void*)pBuf, requestHeader->size);
|
---|
838 | rc = VbglGRPerform(req);
|
---|
839 |
|
---|
840 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->rc))
|
---|
841 | {
|
---|
842 | dprintf(("VBoxGuest::VBoxGuestDeviceControl IOCTL_VBOXGUEST_VMMREQUEST: error issuing request to VMMDev!"
|
---|
843 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->rc));
|
---|
844 | Status = STATUS_UNSUCCESSFUL;
|
---|
845 | }
|
---|
846 | else
|
---|
847 | {
|
---|
848 | /* copy result */
|
---|
849 | memcpy((void*)pBuf, (void*)req, requestHeader->size);
|
---|
850 | cbOut = requestHeader->size;
|
---|
851 | }
|
---|
852 |
|
---|
853 | VbglGRFree(req);
|
---|
854 | }
|
---|
855 | else
|
---|
856 | {
|
---|
857 | Status = STATUS_UNSUCCESSFUL;
|
---|
858 | }
|
---|
859 | #undef CHECK_SIZE
|
---|
860 | break;
|
---|
861 | }
|
---|
862 |
|
---|
863 | case IOCTL_VBOXGUEST_CTL_FILTER_MASK:
|
---|
864 | {
|
---|
865 | VBoxGuestFilterMaskInfo *maskInfo;
|
---|
866 |
|
---|
867 | if (pStack->Parameters.DeviceIoControl.InputBufferLength < sizeof(VBoxGuestFilterMaskInfo)) {
|
---|
868 | dprintf (("VBoxGuest::VBoxGuestDeviceControl: InputBufferLength %d < %d\n",
|
---|
869 | pStack->Parameters.DeviceIoControl.InputBufferLength,
|
---|
870 | sizeof (VBoxGuestFilterMaskInfo)));
|
---|
871 | Status = STATUS_BUFFER_TOO_SMALL;
|
---|
872 | break;
|
---|
873 |
|
---|
874 | }
|
---|
875 |
|
---|
876 | maskInfo = (VBoxGuestFilterMaskInfo *) pBuf;
|
---|
877 | if (!CtlGuestFilterMask (maskInfo->u32OrMask, maskInfo->u32NotMask))
|
---|
878 | {
|
---|
879 | Status = STATUS_UNSUCCESSFUL;
|
---|
880 | }
|
---|
881 | break;
|
---|
882 | }
|
---|
883 |
|
---|
884 | #ifdef VBOX_HGCM
|
---|
885 | /* HGCM offers blocking IOCTLSs just like waitevent and actually
|
---|
886 | * uses the same waiting code.
|
---|
887 | */
|
---|
888 | case IOCTL_VBOXGUEST_HGCM_CONNECT:
|
---|
889 | {
|
---|
890 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_HGCM_CONNECT\n"));
|
---|
891 |
|
---|
892 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength != sizeof(VBoxGuestHGCMConnectInfo))
|
---|
893 | {
|
---|
894 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: OutputBufferLength %d != sizeof(VBoxGuestHGCMConnectInfo) %d\n",
|
---|
895 | pStack->Parameters.DeviceIoControl.OutputBufferLength, sizeof(VBoxGuestHGCMConnectInfo)));
|
---|
896 | Status = STATUS_INVALID_PARAMETER;
|
---|
897 | break;
|
---|
898 | }
|
---|
899 |
|
---|
900 | if (pStack->Parameters.DeviceIoControl.InputBufferLength != sizeof(VBoxGuestHGCMConnectInfo)) {
|
---|
901 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: InputBufferLength %d != sizeof(VBoxGuestHGCMConnectInfo) %d\n",
|
---|
902 | pStack->Parameters.DeviceIoControl.InputBufferLength, sizeof(VBoxGuestHGCMConnectInfo)));
|
---|
903 | Status = STATUS_INVALID_PARAMETER;
|
---|
904 | break;
|
---|
905 | }
|
---|
906 |
|
---|
907 | VBoxGuestHGCMConnectInfo *ptr = (VBoxGuestHGCMConnectInfo *)pBuf;
|
---|
908 |
|
---|
909 | /* If request will be processed asynchronously, execution will
|
---|
910 | * go to VBoxHGCMCallback. There it will wait for the request event, signalled from IRQ.
|
---|
911 | * On IRQ arrival, the VBoxHGCMCallback(s) will check the request memory and, if completion
|
---|
912 | * flag is set, returns.
|
---|
913 | */
|
---|
914 |
|
---|
915 | dprintf(("a) ptr->u32ClientID = %d\n", ptr->u32ClientID));
|
---|
916 |
|
---|
917 | int rc = VbglHGCMConnect (ptr, VBoxHGCMCallback, pDevExt, 0);
|
---|
918 |
|
---|
919 | dprintf(("b) ptr->u32ClientID = %d\n", ptr->u32ClientID));
|
---|
920 |
|
---|
921 | if (VBOX_FAILURE(rc))
|
---|
922 | {
|
---|
923 | dprintf(("IOCTL_VBOXGUEST_HGCM_CONNECT: vbox rc = %Vrc\n", rc));
|
---|
924 | Status = STATUS_UNSUCCESSFUL;
|
---|
925 | }
|
---|
926 | else
|
---|
927 | {
|
---|
928 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
929 | }
|
---|
930 |
|
---|
931 | } break;
|
---|
932 |
|
---|
933 | case IOCTL_VBOXGUEST_HGCM_DISCONNECT:
|
---|
934 | {
|
---|
935 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_HGCM_DISCONNECT\n"));
|
---|
936 |
|
---|
937 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength != sizeof(VBoxGuestHGCMDisconnectInfo))
|
---|
938 | {
|
---|
939 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: OutputBufferLength %d != sizeof(VBoxGuestHGCMDisconnectInfo) %d\n",
|
---|
940 | pStack->Parameters.DeviceIoControl.OutputBufferLength, sizeof(VBoxGuestHGCMDisconnectInfo)));
|
---|
941 | Status = STATUS_INVALID_PARAMETER;
|
---|
942 | break;
|
---|
943 | }
|
---|
944 |
|
---|
945 | if (pStack->Parameters.DeviceIoControl.InputBufferLength != sizeof(VBoxGuestHGCMDisconnectInfo)) {
|
---|
946 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: InputBufferLength %d != sizeof(VBoxGuestHGCMDisconnectInfo) %d\n",
|
---|
947 | pStack->Parameters.DeviceIoControl.InputBufferLength, sizeof(VBoxGuestHGCMDisconnectInfo)));
|
---|
948 | Status = STATUS_INVALID_PARAMETER;
|
---|
949 | break;
|
---|
950 | }
|
---|
951 |
|
---|
952 | VBoxGuestHGCMDisconnectInfo *ptr = (VBoxGuestHGCMDisconnectInfo *)pBuf;
|
---|
953 |
|
---|
954 | /* If request will be processed asynchronously, execution will
|
---|
955 | * go to VBoxHGCMCallback. There it will wait for the request event, signalled from IRQ.
|
---|
956 | * On IRQ arrival, the VBoxHGCMCallback(s) will check the request memory and, if completion
|
---|
957 | * flag is set, returns.
|
---|
958 | */
|
---|
959 |
|
---|
960 | int rc = VbglHGCMDisconnect (ptr, VBoxHGCMCallback, pDevExt, 0);
|
---|
961 |
|
---|
962 | if (VBOX_FAILURE(rc))
|
---|
963 | {
|
---|
964 | dprintf(("IOCTL_VBOXGUEST_HGCM_DISCONNECT: vbox rc = %Vrc\n", rc));
|
---|
965 | Status = STATUS_UNSUCCESSFUL;
|
---|
966 | }
|
---|
967 | else
|
---|
968 | {
|
---|
969 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
970 | }
|
---|
971 |
|
---|
972 | } break;
|
---|
973 |
|
---|
974 | case IOCTL_VBOXGUEST_HGCM_CALL:
|
---|
975 | {
|
---|
976 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: IOCTL_VBOXGUEST_HGCM_CALL\n"));
|
---|
977 |
|
---|
978 | Status = vboxHGCMVerifyIOBuffers (pStack,
|
---|
979 | sizeof (VBoxGuestHGCMCallInfo));
|
---|
980 |
|
---|
981 | if (Status != STATUS_SUCCESS)
|
---|
982 | {
|
---|
983 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: invalid parameter. Status: %p\n", Status));
|
---|
984 | break;
|
---|
985 | }
|
---|
986 |
|
---|
987 | VBoxGuestHGCMCallInfo *ptr = (VBoxGuestHGCMCallInfo *)pBuf;
|
---|
988 |
|
---|
989 | int rc = VbglHGCMCall (ptr, VBoxHGCMCallback, pDevExt, 0);
|
---|
990 |
|
---|
991 | if (VBOX_FAILURE(rc))
|
---|
992 | {
|
---|
993 | dprintf(("IOCTL_VBOXGUEST_HGCM_CALL: vbox rc = %Vrc\n", rc));
|
---|
994 | Status = STATUS_UNSUCCESSFUL;
|
---|
995 | }
|
---|
996 | else
|
---|
997 | {
|
---|
998 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
999 | }
|
---|
1000 |
|
---|
1001 | } break;
|
---|
1002 | #endif /* VBOX_HGCM */
|
---|
1003 |
|
---|
1004 | #ifdef VBOX_WITH_VRDP_SESSION_HANDLING
|
---|
1005 | case IOCTL_VBOXGUEST_ENABLE_VRDP_SESSION:
|
---|
1006 | {
|
---|
1007 | if (!pDevExt->fVRDPEnabled)
|
---|
1008 | {
|
---|
1009 | KUSER_SHARED_DATA *pSharedUserData = (KUSER_SHARED_DATA *)KI_USER_SHARED_DATA;
|
---|
1010 |
|
---|
1011 | pDevExt->fVRDPEnabled = TRUE;
|
---|
1012 | pDevExt->ulOldActiveConsoleId = pSharedUserData->ActiveConsoleId;
|
---|
1013 | pSharedUserData->ActiveConsoleId = 2;
|
---|
1014 | }
|
---|
1015 | break;
|
---|
1016 | }
|
---|
1017 |
|
---|
1018 | case IOCTL_VBOXGUEST_DISABLE_VRDP_SESSION:
|
---|
1019 | {
|
---|
1020 | if (pDevExt->fVRDPEnabled)
|
---|
1021 | {
|
---|
1022 | KUSER_SHARED_DATA *pSharedUserData = (KUSER_SHARED_DATA *)KI_USER_SHARED_DATA;
|
---|
1023 |
|
---|
1024 | pDevExt->fVRDPEnabled = FALSE;
|
---|
1025 | pSharedUserData->ActiveConsoleId = pDevExt->ulOldActiveConsoleId;
|
---|
1026 | pDevExt->ulOldActiveConsoleId = 0;
|
---|
1027 | }
|
---|
1028 | break;
|
---|
1029 | }
|
---|
1030 | #endif
|
---|
1031 |
|
---|
1032 | #ifdef VBOX_WITH_MANAGEMENT
|
---|
1033 | case IOCTL_VBOXGUEST_CTL_CHECK_BALLOON:
|
---|
1034 | {
|
---|
1035 | ULONG *pMemBalloonSize = (ULONG *) pBuf;
|
---|
1036 |
|
---|
1037 | if (pStack->Parameters.DeviceIoControl.OutputBufferLength != sizeof(ULONG))
|
---|
1038 | {
|
---|
1039 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: OutputBufferLength %d != sizeof(ULONG) %d\n",
|
---|
1040 | pStack->Parameters.DeviceIoControl.OutputBufferLength, sizeof(ULONG)));
|
---|
1041 | Status = STATUS_INVALID_PARAMETER;
|
---|
1042 | break;
|
---|
1043 | }
|
---|
1044 |
|
---|
1045 | int rc = VBoxGuestQueryMemoryBalloon(pDevExt, pMemBalloonSize);
|
---|
1046 | if (VBOX_FAILURE(rc))
|
---|
1047 | {
|
---|
1048 | dprintf(("IOCTL_VBOXGUEST_CTL_CHECK_BALLOON: vbox rc = %Vrc\n", rc));
|
---|
1049 | Status = STATUS_UNSUCCESSFUL;
|
---|
1050 | }
|
---|
1051 | else
|
---|
1052 | {
|
---|
1053 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
|
---|
1054 | }
|
---|
1055 | break;
|
---|
1056 | }
|
---|
1057 | #endif
|
---|
1058 |
|
---|
1059 | default:
|
---|
1060 | Status = STATUS_INVALID_PARAMETER;
|
---|
1061 | break;
|
---|
1062 | }
|
---|
1063 |
|
---|
1064 | pIrp->IoStatus.Status = Status;
|
---|
1065 | pIrp->IoStatus.Information = cbOut;
|
---|
1066 |
|
---|
1067 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
1068 |
|
---|
1069 | dprintf(("VBoxGuest::VBoxGuestDeviceControl: returned cbOut=%d rc=%#x\n", cbOut, Status));
|
---|
1070 |
|
---|
1071 | return Status;
|
---|
1072 | }
|
---|
1073 |
|
---|
1074 |
|
---|
1075 | /**
|
---|
1076 | * IRP_MJ_SYSTEM_CONTROL handler
|
---|
1077 | *
|
---|
1078 | * @returns NT status code
|
---|
1079 | * @param pDevObj Device object.
|
---|
1080 | * @param pIrp IRP.
|
---|
1081 | */
|
---|
1082 | NTSTATUS VBoxGuestSystemControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
1083 | {
|
---|
1084 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
|
---|
1085 |
|
---|
1086 | dprintf(("VBoxGuest::VBoxGuestSystemControl\n"));
|
---|
1087 |
|
---|
1088 | /* Always pass it on to the next driver. */
|
---|
1089 | IoSkipCurrentIrpStackLocation(pIrp);
|
---|
1090 |
|
---|
1091 | return IoCallDriver(pDevExt->nextLowerDriver, pIrp);
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | /**
|
---|
1095 | * IRP_MJ_SHUTDOWN handler
|
---|
1096 | *
|
---|
1097 | * @returns NT status code
|
---|
1098 | * @param pDevObj Device object.
|
---|
1099 | * @param pIrp IRP.
|
---|
1100 | */
|
---|
1101 | NTSTATUS VBoxGuestShutdown(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
1102 | {
|
---|
1103 | VMMDevPowerStateRequest *req = NULL;
|
---|
1104 |
|
---|
1105 | dprintf(("VBoxGuest::VBoxGuestShutdown\n"));
|
---|
1106 |
|
---|
1107 | int rc = VbglGRAlloc ((VMMDevRequestHeader **)&req, sizeof (VMMDevPowerStateRequest), VMMDevReq_SetPowerStatus);
|
---|
1108 |
|
---|
1109 | if (VBOX_SUCCESS(rc))
|
---|
1110 | {
|
---|
1111 | req->powerState = VMMDevPowerState_PowerOff;
|
---|
1112 |
|
---|
1113 | rc = VbglGRPerform (&req->header);
|
---|
1114 |
|
---|
1115 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
1116 | {
|
---|
1117 | dprintf(("VBoxGuest::PowerStateRequest: error performing request to VMMDev."
|
---|
1118 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | VbglGRFree (&req->header);
|
---|
1122 | }
|
---|
1123 |
|
---|
1124 | return STATUS_SUCCESS;
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 | /**
|
---|
1128 | * Stub function for functions we don't implemented.
|
---|
1129 | *
|
---|
1130 | * @returns STATUS_NOT_SUPPORTED
|
---|
1131 | * @param pDevObj Device object.
|
---|
1132 | * @param pIrp IRP.
|
---|
1133 | */
|
---|
1134 | NTSTATUS VBoxGuestNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp)
|
---|
1135 | {
|
---|
1136 | dprintf(("VBoxGuest::VBoxGuestNotSupportedStub\n"));
|
---|
1137 | pDevObj = pDevObj;
|
---|
1138 |
|
---|
1139 | pIrp->IoStatus.Information = 0;
|
---|
1140 | pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
|
---|
1141 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
|
---|
1142 |
|
---|
1143 | return STATUS_NOT_SUPPORTED;
|
---|
1144 | }
|
---|
1145 |
|
---|
1146 | /**
|
---|
1147 | * DPC handler
|
---|
1148 | *
|
---|
1149 | * @param dpc DPC descriptor.
|
---|
1150 | * @param pDevObj Device object.
|
---|
1151 | * @param irp Interrupt request packet.
|
---|
1152 | * @param context Context specific pointer.
|
---|
1153 | */
|
---|
1154 | VOID VBoxGuestDpcHandler(PKDPC dpc, PDEVICE_OBJECT pDevObj,
|
---|
1155 | PIRP irp, PVOID context)
|
---|
1156 | {
|
---|
1157 | /* Unblock handlers waiting for arrived events.
|
---|
1158 | *
|
---|
1159 | * Events are very low things, there is one event flag (1 or more bit)
|
---|
1160 | * for each event. Each event is processed by exactly one handler.
|
---|
1161 | *
|
---|
1162 | * Assume that we trust additions and that other drivers will
|
---|
1163 | * handle its respective events without trying to fetch all events.
|
---|
1164 | *
|
---|
1165 | * Anyway design assures that wrong event processing will affect only guest.
|
---|
1166 | *
|
---|
1167 | * Event handler calls VMMDev IOCTL for waiting an event.
|
---|
1168 | * It supplies event mask. IOCTL blocks on EventNotification.
|
---|
1169 | * Here we just signal an the EventNotification to all waiting
|
---|
1170 | * threads, the IOCTL handler analyzes events and either
|
---|
1171 | * return to caller or blocks again.
|
---|
1172 | *
|
---|
1173 | * If we do not have too many events this is a simple and good
|
---|
1174 | * approach. Other way is to have as many Event objects as the callers
|
---|
1175 | * and wake up only callers waiting for the specific event.
|
---|
1176 | *
|
---|
1177 | * Now with the 'wake up all' appoach we probably do not need the DPC
|
---|
1178 | * handler and can signal event directly from ISR.
|
---|
1179 | *
|
---|
1180 | */
|
---|
1181 |
|
---|
1182 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
|
---|
1183 |
|
---|
1184 | dprintf(("VBoxGuest::VBoxGuestDpcHandler\n"));
|
---|
1185 |
|
---|
1186 | KePulseEvent(&pDevExt->keventNotification, 0, FALSE);
|
---|
1187 |
|
---|
1188 | }
|
---|
1189 |
|
---|
1190 | /**
|
---|
1191 | * ISR handler
|
---|
1192 | *
|
---|
1193 | * @return BOOLEAN indicates whether the IRQ came from us (TRUE) or not (FALSE)
|
---|
1194 | * @param interrupt Interrupt that was triggered.
|
---|
1195 | * @param serviceContext Context specific pointer.
|
---|
1196 | */
|
---|
1197 | BOOLEAN VBoxGuestIsrHandler(PKINTERRUPT interrupt, PVOID serviceContext)
|
---|
1198 | {
|
---|
1199 | NTSTATUS rc;
|
---|
1200 | PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)serviceContext;
|
---|
1201 | BOOLEAN fIRQTaken = FALSE;
|
---|
1202 |
|
---|
1203 | dprintf(("VBoxGuest::VBoxGuestIsrHandler haveEvents = %d\n",
|
---|
1204 | pDevExt->pVMMDevMemory->V.V1_04.fHaveEvents));
|
---|
1205 |
|
---|
1206 | /*
|
---|
1207 | * now we have to find out whether it was our IRQ. Read the event mask
|
---|
1208 | * from our device to see if there are any pending events
|
---|
1209 | */
|
---|
1210 | if (pDevExt->pVMMDevMemory->V.V1_04.fHaveEvents)
|
---|
1211 | {
|
---|
1212 | /* Acknowlegde events. */
|
---|
1213 | VMMDevEvents *req = pDevExt->irqAckEvents;
|
---|
1214 |
|
---|
1215 | rc = VbglGRPerform (&req->header);
|
---|
1216 | if (VBOX_SUCCESS(rc) && VBOX_SUCCESS(req->header.rc))
|
---|
1217 | {
|
---|
1218 | dprintf(("VBoxGuest::VBoxGuestIsrHandler: acknowledge events succeeded %#x\n",
|
---|
1219 | req->events));
|
---|
1220 |
|
---|
1221 | ASMAtomicOrU32((uint32_t *)&pDevExt->u32Events, req->events);
|
---|
1222 | IoRequestDpc(pDevExt->deviceObject, pDevExt->currentIrp, NULL);
|
---|
1223 | }
|
---|
1224 | else
|
---|
1225 | {
|
---|
1226 | /* This can't be actually. This is sign of a serious problem. */
|
---|
1227 | dprintf(("VBoxGuest::VBoxGuestIsrHandler: "
|
---|
1228 | "acknowledge events failed rc = %d, header rc = %d\n",
|
---|
1229 | rc, req->header.rc));
|
---|
1230 | }
|
---|
1231 |
|
---|
1232 | /* Mark IRQ as taken, there were events for us. */
|
---|
1233 | fIRQTaken = TRUE;
|
---|
1234 | }
|
---|
1235 |
|
---|
1236 | return fIRQTaken;
|
---|
1237 | }
|
---|
1238 |
|
---|
1239 | /**
|
---|
1240 | * Worker thread to do periodic things such as synchronize the
|
---|
1241 | * system time and notify other drivers of events.
|
---|
1242 | *
|
---|
1243 | * @param pDevExt device extension pointer
|
---|
1244 | */
|
---|
1245 | VOID vboxWorkerThread(PVOID context)
|
---|
1246 | {
|
---|
1247 | PVBOXGUESTDEVEXT pDevExt;
|
---|
1248 |
|
---|
1249 | pDevExt = (PVBOXGUESTDEVEXT)context;
|
---|
1250 | dprintf(("VBoxGuest::vboxWorkerThread entered\n"));
|
---|
1251 |
|
---|
1252 | VMMDevReqHostTime *req = NULL;
|
---|
1253 |
|
---|
1254 | int rc = VbglGRAlloc ((VMMDevRequestHeader **)&req, sizeof (VMMDevReqHostTime), VMMDevReq_GetHostTime);
|
---|
1255 |
|
---|
1256 | if (VBOX_FAILURE(rc))
|
---|
1257 | {
|
---|
1258 | dprintf(("VBoxGuest::vboxWorkerThread: could not allocate request buffer, exiting rc = %d!\n", rc));
|
---|
1259 | return;
|
---|
1260 | }
|
---|
1261 |
|
---|
1262 | /* perform the hypervisor address space reservation */
|
---|
1263 | reserveHypervisorMemory(pDevExt);
|
---|
1264 |
|
---|
1265 | do
|
---|
1266 | {
|
---|
1267 | /*
|
---|
1268 | * Do the time sync
|
---|
1269 | */
|
---|
1270 | {
|
---|
1271 | LARGE_INTEGER systemTime;
|
---|
1272 | #define TICKSPERSEC 10000000
|
---|
1273 | #define TICKSPERMSEC 10000
|
---|
1274 | #define SECSPERDAY 86400
|
---|
1275 | #define SECS_1601_TO_1970 ((369 * 365 + 89) * (uint64_t)SECSPERDAY)
|
---|
1276 | #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
|
---|
1277 |
|
---|
1278 |
|
---|
1279 | req->header.rc = VERR_GENERAL_FAILURE;
|
---|
1280 |
|
---|
1281 | rc = VbglGRPerform (&req->header);
|
---|
1282 |
|
---|
1283 | if (VBOX_SUCCESS(rc) && VBOX_SUCCESS(req->header.rc))
|
---|
1284 | {
|
---|
1285 | uint64_t hostTime = req->time;
|
---|
1286 |
|
---|
1287 | // Windows was originally designed in 1601...
|
---|
1288 | systemTime.QuadPart = hostTime * (uint64_t)TICKSPERMSEC + (uint64_t)TICKS_1601_TO_1970;
|
---|
1289 | dprintf(("VBoxGuest::vboxWorkerThread: synching time with host time (msec/UTC): %llu\n", hostTime));
|
---|
1290 | ZwSetSystemTime(&systemTime, NULL);
|
---|
1291 | }
|
---|
1292 | else
|
---|
1293 | {
|
---|
1294 | dprintf(("VBoxGuest::PowerStateRequest: error performing request to VMMDev."
|
---|
1295 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
1296 | }
|
---|
1297 | }
|
---|
1298 |
|
---|
1299 | /*
|
---|
1300 | * Go asleep unless we're supposed to terminate
|
---|
1301 | */
|
---|
1302 | if (!pDevExt->stopThread)
|
---|
1303 | {
|
---|
1304 | ULONG secWait = 60;
|
---|
1305 | dprintf(("VBoxGuest::vboxWorkerThread: waiting for %u seconds...\n", secWait));
|
---|
1306 | LARGE_INTEGER dueTime;
|
---|
1307 | dueTime.QuadPart = -10000 * 1000 * (int)secWait;
|
---|
1308 | if (KeWaitForSingleObject(&pDevExt->workerThreadRequest, Executive,
|
---|
1309 | KernelMode, FALSE, &dueTime) == STATUS_SUCCESS)
|
---|
1310 | {
|
---|
1311 | KeResetEvent(&pDevExt->workerThreadRequest);
|
---|
1312 | }
|
---|
1313 | }
|
---|
1314 | } while (!pDevExt->stopThread);
|
---|
1315 |
|
---|
1316 | dprintf(("VBoxGuest::vboxWorkerThread: we've been asked to terminate!\n"));
|
---|
1317 |
|
---|
1318 | /* free our request buffer */
|
---|
1319 | VbglGRFree (&req->header);
|
---|
1320 |
|
---|
1321 | if (pDevExt->workerThread)
|
---|
1322 | {
|
---|
1323 | ObDereferenceObject(pDevExt->workerThread);
|
---|
1324 | pDevExt->workerThread = NULL;
|
---|
1325 | }
|
---|
1326 | dprintf(("VBoxGuest::vboxWorkerThread: now really gone!\n"));
|
---|
1327 | }
|
---|
1328 |
|
---|
1329 | /**
|
---|
1330 | * Create driver worker threads
|
---|
1331 | *
|
---|
1332 | * @returns NTSTATUS NT status code
|
---|
1333 | * @param pDevExt VBoxGuest device extension
|
---|
1334 | */
|
---|
1335 | NTSTATUS createThreads(PVBOXGUESTDEVEXT pDevExt)
|
---|
1336 | {
|
---|
1337 | NTSTATUS rc;
|
---|
1338 | HANDLE threadHandle;
|
---|
1339 | OBJECT_ATTRIBUTES objAttributes;
|
---|
1340 |
|
---|
1341 | dprintf(("VBoxGuest::createThreads\n"));
|
---|
1342 |
|
---|
1343 | // first setup the request semaphore
|
---|
1344 | KeInitializeEvent(&pDevExt->workerThreadRequest, SynchronizationEvent, FALSE);
|
---|
1345 |
|
---|
1346 | // the API has slightly changed after NT4
|
---|
1347 | #ifdef TARGET_NT4
|
---|
1348 | #ifdef OBJ_KERNEL_HANDLE
|
---|
1349 | #undef OBJ_KERNEL_HANDLE
|
---|
1350 | #endif
|
---|
1351 | #define OBJ_KERNEL_HANDLE 0
|
---|
1352 | #endif
|
---|
1353 |
|
---|
1354 | /*
|
---|
1355 | * The worker thread
|
---|
1356 | */
|
---|
1357 | InitializeObjectAttributes(&objAttributes,
|
---|
1358 | NULL,
|
---|
1359 | OBJ_KERNEL_HANDLE,
|
---|
1360 | NULL,
|
---|
1361 | NULL);
|
---|
1362 |
|
---|
1363 | rc = PsCreateSystemThread(&threadHandle,
|
---|
1364 | THREAD_ALL_ACCESS,
|
---|
1365 | &objAttributes,
|
---|
1366 | (HANDLE)0L,
|
---|
1367 | NULL,
|
---|
1368 | vboxWorkerThread,
|
---|
1369 | pDevExt);
|
---|
1370 | dprintf(("VBoxGuest::createThreads: PsCreateSystemThread for worker thread returned: 0x%x\n", rc));
|
---|
1371 | rc = ObReferenceObjectByHandle(threadHandle,
|
---|
1372 | THREAD_ALL_ACCESS,
|
---|
1373 | NULL,
|
---|
1374 | KernelMode,
|
---|
1375 | (PVOID*)&pDevExt->workerThread,
|
---|
1376 | NULL);
|
---|
1377 | ZwClose(threadHandle);
|
---|
1378 |
|
---|
1379 | /*
|
---|
1380 | * The idle thread
|
---|
1381 | */
|
---|
1382 | #if 0 /// @todo Windows "sees" that time is lost and reports 100% usage
|
---|
1383 | rc = PsCreateSystemThread(&threadHandle,
|
---|
1384 | THREAD_ALL_ACCESS,
|
---|
1385 | &objAttributes,
|
---|
1386 | (HANDLE)0L,
|
---|
1387 | NULL,
|
---|
1388 | vboxIdleThread,
|
---|
1389 | pDevExt);
|
---|
1390 | dprintf(("VBoxGuest::createThreads: PsCreateSystemThread for idle thread returned: 0x%x\n", rc));
|
---|
1391 | rc = ObReferenceObjectByHandle(threadHandle,
|
---|
1392 | THREAD_ALL_ACCESS,
|
---|
1393 | NULL,
|
---|
1394 | KernelMode,
|
---|
1395 | (PVOID*)&pDevExt->idleThread,
|
---|
1396 | NULL);
|
---|
1397 | ZwClose(threadHandle);
|
---|
1398 | #endif
|
---|
1399 |
|
---|
1400 | return rc;
|
---|
1401 | }
|
---|
1402 |
|
---|
1403 | /**
|
---|
1404 | * Helper routine to reserve address space for the hypervisor
|
---|
1405 | * and communicate its position.
|
---|
1406 | *
|
---|
1407 | * @param pDevExt Device extension structure.
|
---|
1408 | */
|
---|
1409 | VOID reserveHypervisorMemory(PVBOXGUESTDEVEXT pDevExt)
|
---|
1410 | {
|
---|
1411 | // @todo rc handling
|
---|
1412 | uint32_t hypervisorSize;
|
---|
1413 |
|
---|
1414 | VMMDevReqHypervisorInfo *req = NULL;
|
---|
1415 |
|
---|
1416 | int rc = VbglGRAlloc ((VMMDevRequestHeader **)&req, sizeof (VMMDevReqHypervisorInfo), VMMDevReq_GetHypervisorInfo);
|
---|
1417 |
|
---|
1418 | if (VBOX_SUCCESS(rc))
|
---|
1419 | {
|
---|
1420 | req->hypervisorStart = 0;
|
---|
1421 | req->hypervisorSize = 0;
|
---|
1422 |
|
---|
1423 | rc = VbglGRPerform (&req->header);
|
---|
1424 |
|
---|
1425 | if (VBOX_SUCCESS(rc) && VBOX_SUCCESS(req->header.rc))
|
---|
1426 | {
|
---|
1427 | hypervisorSize = req->hypervisorSize;
|
---|
1428 |
|
---|
1429 | if (!hypervisorSize)
|
---|
1430 | {
|
---|
1431 | dprintf(("VBoxGuest::reserveHypervisorMemory: host returned 0, not doing anything\n"));
|
---|
1432 | return;
|
---|
1433 | }
|
---|
1434 |
|
---|
1435 | dprintf(("VBoxGuest::reserveHypervisorMemory: host wants %u bytes of hypervisor address space\n", hypervisorSize));
|
---|
1436 |
|
---|
1437 | // Map fictive physical memory into the kernel address space to reserve virtual
|
---|
1438 | // address space. This API does not perform any checks but just allocate the
|
---|
1439 | // PTEs (which we don't really need/want but there isn't any other clean method).
|
---|
1440 | // The hypervisor only likes 4MB aligned virtual addresses, so we have to allocate
|
---|
1441 | // 4MB more than we are actually supposed to in order to guarantee that. Maybe we
|
---|
1442 | // can come up with a less lavish algorithm lateron.
|
---|
1443 | PHYSICAL_ADDRESS physAddr;
|
---|
1444 | physAddr.QuadPart = HYPERVISOR_PHYSICAL_START;
|
---|
1445 | pDevExt->hypervisorMappingSize = hypervisorSize + 0x400000;
|
---|
1446 | pDevExt->hypervisorMapping = MmMapIoSpace(physAddr,
|
---|
1447 | pDevExt->hypervisorMappingSize,
|
---|
1448 | MmNonCached);
|
---|
1449 | if (!pDevExt->hypervisorMapping)
|
---|
1450 | {
|
---|
1451 | dprintf(("VBoxGuest::reserveHypervisorMemory: MmMapIoSpace returned NULL!\n"));
|
---|
1452 | return;
|
---|
1453 | }
|
---|
1454 |
|
---|
1455 | dprintf(("VBoxGuest::reserveHypervisorMemory: MmMapIoSpace returned %p\n", pDevExt->hypervisorMapping));
|
---|
1456 | dprintf(("VBoxGuest::reserveHypervisorMemory: communicating %p to host\n",
|
---|
1457 | RT_ALIGN_P(pDevExt->hypervisorMapping, 0x400000)));
|
---|
1458 |
|
---|
1459 | /* align at 4MB */
|
---|
1460 | req->hypervisorStart = (RTGCPTR)RT_ALIGN_P(pDevExt->hypervisorMapping, 0x400000);
|
---|
1461 |
|
---|
1462 | req->header.requestType = VMMDevReq_SetHypervisorInfo;
|
---|
1463 | req->header.rc = VERR_GENERAL_FAILURE;
|
---|
1464 |
|
---|
1465 | /* issue request */
|
---|
1466 | rc = VbglGRPerform (&req->header);
|
---|
1467 |
|
---|
1468 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
1469 | {
|
---|
1470 | dprintf(("VBoxGuest::reserveHypervisorMemory: error communicating physical address to VMMDev!"
|
---|
1471 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
1472 | }
|
---|
1473 | }
|
---|
1474 | else
|
---|
1475 | {
|
---|
1476 | dprintf(("VBoxGuest::reserveHypervisorMemory: request failed with rc %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
1477 | }
|
---|
1478 | VbglGRFree (&req->header);
|
---|
1479 | }
|
---|
1480 |
|
---|
1481 | return;
|
---|
1482 | }
|
---|
1483 |
|
---|
1484 | /**
|
---|
1485 | * Helper function to unregister a virtual address space mapping
|
---|
1486 | *
|
---|
1487 | * @param pDevExt Device extension
|
---|
1488 | */
|
---|
1489 | VOID unreserveHypervisorMemory(PVBOXGUESTDEVEXT pDevExt)
|
---|
1490 | {
|
---|
1491 | VMMDevReqHypervisorInfo *req = NULL;
|
---|
1492 |
|
---|
1493 | int rc = VbglGRAlloc ((VMMDevRequestHeader **)&req, sizeof (VMMDevReqHypervisorInfo), VMMDevReq_SetHypervisorInfo);
|
---|
1494 |
|
---|
1495 | if (VBOX_SUCCESS(rc))
|
---|
1496 | {
|
---|
1497 | /* tell the hypervisor that the mapping is no longer available */
|
---|
1498 |
|
---|
1499 | req->hypervisorStart = 0;
|
---|
1500 | req->hypervisorSize = 0;
|
---|
1501 |
|
---|
1502 | rc = VbglGRPerform (&req->header);
|
---|
1503 |
|
---|
1504 | if (VBOX_FAILURE(rc) || VBOX_FAILURE(req->header.rc))
|
---|
1505 | {
|
---|
1506 | dprintf(("VBoxGuest::unreserveHypervisorMemory: error communicating physical address to VMMDev!"
|
---|
1507 | "rc = %d, VMMDev rc = %Vrc\n", rc, req->header.rc));
|
---|
1508 | }
|
---|
1509 |
|
---|
1510 | VbglGRFree (&req->header);
|
---|
1511 | }
|
---|
1512 |
|
---|
1513 | if (!pDevExt->hypervisorMapping)
|
---|
1514 | {
|
---|
1515 | dprintf(("VBoxGuest::unreserveHypervisorMemory: there is no mapping, returning\n"));
|
---|
1516 | return;
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | // unmap fictive IO space
|
---|
1520 | MmUnmapIoSpace(pDevExt->hypervisorMapping, pDevExt->hypervisorMappingSize);
|
---|
1521 | dprintf(("VBoxGuest::unreserveHypervisorMemmory: done\n"));
|
---|
1522 | }
|
---|
1523 |
|
---|
1524 | /**
|
---|
1525 | * Idle thread that runs at the lowest priority possible
|
---|
1526 | * and whenever scheduled, makes a VMMDev call to give up
|
---|
1527 | * timeslices. This is so prevent Windows from thinking that
|
---|
1528 | * nothing is happening on the machine and doing stupid things
|
---|
1529 | * that would steal time from other VMs it doesn't know of.
|
---|
1530 | *
|
---|
1531 | * @param pDevExt device extension pointer
|
---|
1532 | */
|
---|
1533 | VOID vboxIdleThread(PVOID context)
|
---|
1534 | {
|
---|
1535 | PVBOXGUESTDEVEXT pDevExt;
|
---|
1536 |
|
---|
1537 | pDevExt = (PVBOXGUESTDEVEXT)context;
|
---|
1538 | dprintf(("VBoxGuest::vboxIdleThread entered\n"));
|
---|
1539 |
|
---|
1540 | /* set priority as low as possible */
|
---|
1541 | KeSetPriorityThread(KeGetCurrentThread(), LOW_PRIORITY);
|
---|
1542 |
|
---|
1543 | /* allocate VMMDev request structure */
|
---|
1544 | VMMDevReqIdle *req;
|
---|
1545 | int rc = VbglGRAlloc((VMMDevRequestHeader **)&req, sizeof (VMMDevReqHypervisorInfo), VMMDevReq_Idle);
|
---|
1546 | if (VBOX_FAILURE(rc))
|
---|
1547 | {
|
---|
1548 | dprintf(("VBoxGuest::vboxIdleThread: error %Vrc allocating request structure!\n"));
|
---|
1549 | return;
|
---|
1550 | }
|
---|
1551 |
|
---|
1552 | do
|
---|
1553 | {
|
---|
1554 | //dprintf(("VBoxGuest: performing idle request..\n"));
|
---|
1555 | /* perform idle request */
|
---|
1556 | VbglGRPerform(&req->header);
|
---|
1557 |
|
---|
1558 | } while (!pDevExt->stopThread);
|
---|
1559 |
|
---|
1560 | VbglGRFree(&req->header);
|
---|
1561 |
|
---|
1562 | dprintf(("VBoxGuest::vboxIdleThread leaving\n"));
|
---|
1563 | }
|
---|