[1] | 1 | /** @file
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| 2 | *
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| 3 | * VBox host drivers - Ring-0 support drivers - Win32 host:
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| 4 | * Win32 host driver code
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2006 InnoTek Systemberatung GmbH
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License as published by the Free Software Foundation,
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| 14 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 15 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 16 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | *
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| 18 | * If you received this file as part of a commercial VirtualBox
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| 19 | * distribution, then only the terms of your commercial VirtualBox
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| 20 | * license agreement apply instead of the previous paragraph.
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| 21 | */
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| 22 |
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| 23 |
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| 24 |
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| 25 | /*******************************************************************************
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| 26 | * Header Files *
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| 27 | *******************************************************************************/
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| 28 | #include "SUPDRV.h"
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| 29 | #include <excpt.h>
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| 30 | #include <iprt/assert.h>
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[390] | 31 | #include <iprt/process.h>
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[1] | 32 |
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| 33 |
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| 34 | /*******************************************************************************
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| 35 | * Defined Constants And Macros *
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| 36 | *******************************************************************************/
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| 37 | /** The support service name. */
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| 38 | #define SERVICE_NAME "VBoxDrv"
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| 39 | /** Win32 Device name. */
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| 40 | #define DEVICE_NAME "\\\\.\\VBoxDrv"
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| 41 | /** NT Device name. */
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| 42 | #define DEVICE_NAME_NT L"\\Device\\VBoxDrv"
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[2653] | 43 | /** Win Symlink name. */
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[1] | 44 | #define DEVICE_NAME_DOS L"\\DosDevices\\VBoxDrv"
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[2653] | 45 | /** The Pool tag (VBox). */
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| 46 | #define SUPDRV_NT_POOL_TAG 'xoBV'
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[1] | 47 |
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| 48 |
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| 49 | /*******************************************************************************
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| 50 | * Structures and Typedefs *
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| 51 | *******************************************************************************/
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| 52 | #if 0 //def __AMD64__
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| 53 | typedef struct SUPDRVEXECMEM
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| 54 | {
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| 55 | PMDL pMdl;
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| 56 | void *pvMapping;
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| 57 | void *pvAllocation;
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| 58 | } SUPDRVEXECMEM, *PSUPDRVEXECMEM;
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| 59 | #endif
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| 60 |
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| 61 |
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| 62 | /*******************************************************************************
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| 63 | * Internal Functions *
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| 64 | *******************************************************************************/
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| 65 | static void _stdcall VBoxSupDrvUnload(PDRIVER_OBJECT pDrvObj);
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| 66 | static NTSTATUS _stdcall VBoxSupDrvCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 67 | static NTSTATUS _stdcall VBoxSupDrvClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 68 | static NTSTATUS _stdcall VBoxSupDrvDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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[2515] | 69 | static int VBoxSupDrvDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack);
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[1] | 70 | static NTSTATUS _stdcall VBoxSupDrvNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp);
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| 71 | static NTSTATUS VBoxSupDrvErr2NtStatus(int rc);
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| 72 | static NTSTATUS VBoxSupDrvGipInit(PSUPDRVDEVEXT pDevExt);
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| 73 | static void VBoxSupDrvGipTerm(PSUPDRVDEVEXT pDevExt);
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| 74 | static void _stdcall VBoxSupDrvGipTimer(IN PKDPC pDpc, IN PVOID pvUser, IN PVOID SystemArgument1, IN PVOID SystemArgument2);
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[1027] | 75 | static void _stdcall VBoxSupDrvGipPerCpuDpc(IN PKDPC pDpc, IN PVOID pvUser, IN PVOID SystemArgument1, IN PVOID SystemArgument2);
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[1] | 76 |
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| 77 |
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| 78 | /*******************************************************************************
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| 79 | * Exported Functions *
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| 80 | *******************************************************************************/
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| 81 | __BEGIN_DECLS
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| 82 | ULONG _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath);
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| 83 | __END_DECLS
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| 84 |
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| 85 |
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| 86 | /**
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| 87 | * Driver entry point.
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| 88 | *
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[1355] | 89 | * @returns appropriate status code.
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[1] | 90 | * @param pDrvObj Pointer to driver object.
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| 91 | * @param pRegPath Registry base path.
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| 92 | */
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| 93 | ULONG _stdcall DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)
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| 94 | {
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| 95 | NTSTATUS rc;
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| 96 | dprintf(("VBoxDrv::DriverEntry\n"));
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| 97 |
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| 98 | /*
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| 99 | * Create device.
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| 100 | * (That means creating a device object and a symbolic link so the DOS
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| 101 | * subsystems (OS/2, win32, ++) can access the device.)
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| 102 | */
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| 103 | UNICODE_STRING DevName;
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| 104 | RtlInitUnicodeString(&DevName, DEVICE_NAME_NT);
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| 105 | PDEVICE_OBJECT pDevObj;
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| 106 | rc = IoCreateDevice(pDrvObj, sizeof(SUPDRVDEVEXT), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &pDevObj);
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| 107 | if (NT_SUCCESS(rc))
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| 108 | {
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| 109 | UNICODE_STRING DosName;
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| 110 | RtlInitUnicodeString(&DosName, DEVICE_NAME_DOS);
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| 111 | rc = IoCreateSymbolicLink(&DosName, &DevName);
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| 112 | if (NT_SUCCESS(rc))
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| 113 | {
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| 114 | /*
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| 115 | * Initialize the device extension.
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| 116 | */
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| 117 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pDevObj->DeviceExtension;
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| 118 | memset(pDevExt, 0, sizeof(*pDevExt));
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| 119 | int vrc = supdrvInitDevExt(pDevExt);
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| 120 | if (!vrc)
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| 121 | {
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| 122 | /*
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| 123 | * Inititalize the GIP.
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| 124 | */
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| 125 | rc = VBoxSupDrvGipInit(pDevExt);
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| 126 | if (NT_SUCCESS(rc))
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| 127 | {
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| 128 | /*
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| 129 | * Setup the driver entry points in pDrvObj.
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| 130 | */
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| 131 | pDrvObj->DriverUnload = VBoxSupDrvUnload;
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| 132 | pDrvObj->MajorFunction[IRP_MJ_CREATE] = VBoxSupDrvCreate;
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| 133 | pDrvObj->MajorFunction[IRP_MJ_CLOSE] = VBoxSupDrvClose;
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| 134 | pDrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = VBoxSupDrvDeviceControl;
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| 135 | pDrvObj->MajorFunction[IRP_MJ_READ] = VBoxSupDrvNotSupportedStub;
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| 136 | pDrvObj->MajorFunction[IRP_MJ_WRITE] = VBoxSupDrvNotSupportedStub;
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| 137 | /* more? */
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| 138 | dprintf(("VBoxDrv::DriverEntry returning STATUS_SUCCESS\n"));
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| 139 | return STATUS_SUCCESS;
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| 140 | }
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[2515] | 141 | dprintf(("VBoxSupDrvGipInit failed with rc=%#x!\n", rc));
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| 142 |
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[1] | 143 | supdrvDeleteDevExt(pDevExt);
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| 144 | }
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| 145 | else
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| 146 | {
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| 147 | dprintf(("supdrvInitDevExit failed with vrc=%d!\n", vrc));
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| 148 | rc = VBoxSupDrvErr2NtStatus(vrc);
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| 149 | }
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| 150 |
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| 151 | IoDeleteSymbolicLink(&DosName);
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| 152 | }
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| 153 | else
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| 154 | dprintf(("IoCreateSymbolicLink failed with rc=%#x!\n", rc));
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| 155 |
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| 156 | IoDeleteDevice(pDevObj);
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| 157 | }
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| 158 | else
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| 159 | dprintf(("IoCreateDevice failed with rc=%#x!\n", rc));
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| 160 |
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| 161 | if (NT_SUCCESS(rc))
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| 162 | rc = STATUS_INVALID_PARAMETER;
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| 163 | dprintf(("VBoxDrv::DriverEntry returning %#x\n", rc));
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| 164 | return rc;
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| 165 | }
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| 166 |
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| 167 |
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| 168 | /**
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| 169 | * Unload the driver.
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| 170 | *
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| 171 | * @param pDrvObj Driver object.
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| 172 | */
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| 173 | void _stdcall VBoxSupDrvUnload(PDRIVER_OBJECT pDrvObj)
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| 174 | {
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| 175 | dprintf(("VBoxSupDrvUnload\n"));
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| 176 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pDrvObj->DeviceObject->DeviceExtension;
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| 177 |
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| 178 | /*
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| 179 | * We ASSUME that it's not possible to unload a driver with open handles.
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| 180 | * Start by deleting the symbolic link
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| 181 | */
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| 182 | UNICODE_STRING DosName;
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| 183 | RtlInitUnicodeString(&DosName, DEVICE_NAME_DOS);
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| 184 | NTSTATUS rc = IoDeleteSymbolicLink(&DosName);
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| 185 |
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| 186 | /*
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| 187 | * Terminate the GIP page and delete the device extension.
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| 188 | */
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| 189 | VBoxSupDrvGipTerm(pDevExt);
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| 190 | supdrvDeleteDevExt(pDevExt);
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| 191 | IoDeleteDevice(pDrvObj->DeviceObject);
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| 192 | }
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| 193 |
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| 194 |
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| 195 | /**
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| 196 | * Create (i.e. Open) file entry point.
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| 197 | *
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| 198 | * @param pDevObj Device object.
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| 199 | * @param pIrp Request packet.
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| 200 | */
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| 201 | NTSTATUS _stdcall VBoxSupDrvCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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| 202 | {
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| 203 | dprintf(("VBoxSupDrvCreate\n"));
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| 204 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
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| 205 | PFILE_OBJECT pFileObj = pStack->FileObject;
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| 206 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pDevObj->DeviceExtension;
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| 207 |
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| 208 | /*
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| 209 | * We are not remotely similar to a directory...
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| 210 | * (But this is possible.)
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| 211 | */
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| 212 | if (pStack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
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| 213 | {
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| 214 | pIrp->IoStatus.Status = STATUS_NOT_A_DIRECTORY;
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| 215 | pIrp->IoStatus.Information = 0;
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| 216 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 217 | return STATUS_NOT_A_DIRECTORY;
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| 218 | }
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| 219 |
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| 220 | /*
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| 221 | * Call common code for the rest.
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| 222 | */
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| 223 | pFileObj->FsContext = NULL;
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| 224 | PSUPDRVSESSION pSession;
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| 225 | int rc = supdrvCreateSession(pDevExt, &pSession);
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| 226 | if (!rc)
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| 227 | {
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| 228 | pSession->Uid = NIL_RTUID;
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| 229 | pSession->Gid = NIL_RTGID;
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[387] | 230 | pSession->Process = RTProcSelf();
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| 231 | pSession->R0Process = RTR0ProcHandleSelf();
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[1] | 232 | pFileObj->FsContext = pSession;
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| 233 | }
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| 234 |
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| 235 | NTSTATUS rcNt = pIrp->IoStatus.Status = VBoxSupDrvErr2NtStatus(rc);
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| 236 | pIrp->IoStatus.Information = 0;
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| 237 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 238 |
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| 239 | return rcNt;
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| 240 | }
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| 241 |
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| 242 |
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| 243 | /**
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| 244 | * Close file entry point.
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| 245 | *
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| 246 | * @param pDevObj Device object.
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| 247 | * @param pIrp Request packet.
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| 248 | */
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| 249 | NTSTATUS _stdcall VBoxSupDrvClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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| 250 | {
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| 251 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pDevObj->DeviceExtension;
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| 252 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
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| 253 | PFILE_OBJECT pFileObj = pStack->FileObject;
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| 254 | dprintf(("VBoxSupDrvClose: pDevExt=%p pFileObj=%p pSession=%p\n",
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| 255 | pDevExt, pFileObj, pFileObj->FsContext));
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| 256 | supdrvCloseSession(pDevExt, (PSUPDRVSESSION)pFileObj->FsContext);
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| 257 | pFileObj->FsContext = NULL;
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| 258 | pIrp->IoStatus.Information = 0;
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| 259 | pIrp->IoStatus.Status = STATUS_SUCCESS;
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| 260 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 261 |
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| 262 | return STATUS_SUCCESS;
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| 263 | }
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| 264 |
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| 265 |
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| 266 | /**
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| 267 | * Device I/O Control entry point.
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| 268 | *
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| 269 | * @param pDevObj Device object.
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| 270 | * @param pIrp Request packet.
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| 271 | */
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| 272 | NTSTATUS _stdcall VBoxSupDrvDeviceControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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| 273 | {
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| 274 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pDevObj->DeviceExtension;
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| 275 | PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
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| 276 | PSUPDRVSESSION pSession = (PSUPDRVSESSION)pStack->FileObject->FsContext;
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| 277 |
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[2515] | 278 | #ifdef VBOX_WITHOUT_IDT_PATCHING
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[1] | 279 | /*
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[2515] | 280 | * Deal with the two high-speed IOCtl that takes it's arguments from
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| 281 | * the session and iCmd, and only returns a VBox status code.
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[1] | 282 | */
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[2515] | 283 | ULONG ulCmd = pStack->Parameters.DeviceIoControl.IoControlCode;
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| 284 | if ( ulCmd == SUP_IOCTL_FAST_DO_RAW_RUN
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| 285 | || ulCmd == SUP_IOCTL_FAST_DO_HWACC_RUN
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| 286 | || ulCmd == SUP_IOCTL_FAST_DO_NOP)
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[1] | 287 | {
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[2515] | 288 | int rc = supdrvIOCtlFast(ulCmd, pDevExt, pSession);
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| 289 |
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| 290 | /* Complete the I/O request. */
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| 291 | NTSTATUS rcNt = pIrp->IoStatus.Status = STATUS_SUCCESS;
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| 292 | pIrp->IoStatus.Information = sizeof(rc);
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| 293 | __try
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| 294 | {
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| 295 | *(int *)pIrp->UserBuffer = rc;
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| 296 | }
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| 297 | __except(EXCEPTION_EXECUTE_HANDLER)
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| 298 | {
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| 299 | rcNt = pIrp->IoStatus.Status = GetExceptionCode();
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| 300 | dprintf(("VBoxSupDrvDeviceContorl: Exception Code %#x\n", rcNt));
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| 301 | }
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| 302 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 303 | return rcNt;
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[1] | 304 | }
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[2515] | 305 | #endif /* VBOX_WITHOUT_IDT_PATCHING */
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| 306 |
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| 307 | return VBoxSupDrvDeviceControlSlow(pDevExt, pSession, pIrp, pStack);
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| 308 | }
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| 309 |
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| 310 |
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| 311 | /**
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| 312 | * Worker for VBoxSupDrvDeviceControl that takes the slow IOCtl functions.
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| 313 | *
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| 314 | * @returns NT status code.
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| 315 | *
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| 316 | * @param pDevObj Device object.
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| 317 | * @param pSession The session.
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| 318 | * @param pIrp Request packet.
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| 319 | * @param pStack The stack location containing the DeviceControl parameters.
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| 320 | */
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| 321 | static int VBoxSupDrvDeviceControlSlow(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PIRP pIrp, PIO_STACK_LOCATION pStack)
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| 322 | {
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| 323 | NTSTATUS rcNt = STATUS_NOT_SUPPORTED;
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| 324 | unsigned cbOut = 0;
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| 325 | int rc = 0;
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| 326 | dprintf2(("VBoxSupDrvDeviceControlSlow(%p,%p): ioctl=%#x pBuf=%p cbIn=%#x cbOut=%#x pSession=%p\n",
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| 327 | pDevObj, pIrp, pStack->Parameters.DeviceIoControl.IoControlCode,
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| 328 | pBuf, pStack->Parameters.DeviceIoControl.InputBufferLength,
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| 329 | pStack->Parameters.DeviceIoControl.OutputBufferLength, pSession));
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| 330 |
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| 331 | #ifdef __AMD64__
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| 332 | /* Don't allow 32-bit processes to do any I/O controls. */
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| 333 | if (!IoIs32bitProcess(pIrp))
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[1] | 334 | #endif
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[2515] | 335 | {
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| 336 | /* Verify that it's a buffered CTL. */
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| 337 | if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
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| 338 | {
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| 339 | char *pBuf = (char *)pIrp->AssociatedIrp.SystemBuffer;
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[1] | 340 |
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[2653] | 341 | /*
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| 342 | * Do the job.
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[2515] | 343 | */
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| 344 | rc = supdrvIOCtl(pStack->Parameters.DeviceIoControl.IoControlCode, pDevExt, pSession,
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| 345 | pBuf, pStack->Parameters.DeviceIoControl.InputBufferLength,
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| 346 | pBuf, pStack->Parameters.DeviceIoControl.OutputBufferLength,
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| 347 | &cbOut);
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| 348 | rcNt = VBoxSupDrvErr2NtStatus(rc);
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[1] | 349 |
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[2515] | 350 | /* sanity check. */
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| 351 | AssertMsg(cbOut <= pStack->Parameters.DeviceIoControl.OutputBufferLength,
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| 352 | ("cbOut is too large! cbOut=%d max=%d! ioctl=%#x\n",
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| 353 | cbOut, pStack->Parameters.DeviceIoControl.OutputBufferLength,
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| 354 | pStack->Parameters.DeviceIoControl.IoControlCode));
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| 355 | if (cbOut > pStack->Parameters.DeviceIoControl.OutputBufferLength)
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| 356 | cbOut = pStack->Parameters.DeviceIoControl.OutputBufferLength;
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| 357 | dprintf2(("VBoxSupDrvDeviceControlSlow: returns %#x cbOut=%d rc=%#x\n", rcNt, cbOut, rc));
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| 358 | }
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| 359 | else
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[2653] | 360 | dprintf(("VBoxSupDrvDeviceControlSlow: not buffered request (%#x) - not supported\n",
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[2515] | 361 | pStack->Parameters.DeviceIoControl.IoControlCode));
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| 362 | }
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| 363 | #ifdef __AMD64__
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| 364 | else
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| 365 | dprintf(("VBoxSupDrvDeviceControlSlow: WOW64 req - not supported\n"));
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| 366 | #endif
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[1] | 367 |
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| 368 | /* complete the request. */
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[2515] | 369 | pIrp->IoStatus.Status = rcNt;
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| 370 | pIrp->IoStatus.Information = NT_SUCCESS(rcNt) ? cbOut : rc; /* does this rc passing actually work?!? */
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[1] | 371 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 372 | return rcNt;
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| 373 | }
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| 374 |
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| 375 |
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| 376 | /**
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| 377 | * Stub function for functions we don't implemented.
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| 378 | *
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| 379 | * @returns STATUS_NOT_SUPPORTED
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| 380 | * @param pDevObj Device object.
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| 381 | * @param pIrp IRP.
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| 382 | */
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| 383 | NTSTATUS _stdcall VBoxSupDrvNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp)
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| 384 | {
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| 385 | dprintf(("VBoxSupDrvNotSupportedStub\n"));
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| 386 | pDevObj = pDevObj;
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| 387 |
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| 388 | pIrp->IoStatus.Information = 0;
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| 389 | pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
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| 390 | IoCompleteRequest(pIrp, IO_NO_INCREMENT);
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| 391 |
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| 392 | return STATUS_NOT_SUPPORTED;
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| 393 | }
|
---|
| 394 |
|
---|
| 395 |
|
---|
| 396 | /**
|
---|
| 397 | * Initializes any OS specific object creator fields.
|
---|
| 398 | */
|
---|
| 399 | void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
|
---|
| 400 | {
|
---|
| 401 | NOREF(pObj);
|
---|
| 402 | NOREF(pSession);
|
---|
| 403 | }
|
---|
| 404 |
|
---|
| 405 |
|
---|
| 406 | /**
|
---|
| 407 | * Checks if the session can access the object.
|
---|
| 408 | *
|
---|
| 409 | * @returns true if a decision has been made.
|
---|
| 410 | * @returns false if the default access policy should be applied.
|
---|
| 411 | *
|
---|
| 412 | * @param pObj The object in question.
|
---|
| 413 | * @param pSession The session wanting to access the object.
|
---|
| 414 | * @param pszObjName The object name, can be NULL.
|
---|
| 415 | * @param prc Where to store the result when returning true.
|
---|
| 416 | */
|
---|
| 417 | bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
|
---|
| 418 | {
|
---|
| 419 | NOREF(pObj);
|
---|
| 420 | NOREF(pSession);
|
---|
| 421 | NOREF(pszObjName);
|
---|
| 422 | NOREF(prc);
|
---|
| 423 | return false;
|
---|
| 424 | }
|
---|
| 425 |
|
---|
| 426 |
|
---|
| 427 | /**
|
---|
| 428 | * OS Specific code for locking down memory.
|
---|
| 429 | *
|
---|
| 430 | * @returns 0 on success.
|
---|
| 431 | * @returns SUPDRV_ERR_* on failure.
|
---|
| 432 | * @param pMem Pointer to memory.
|
---|
| 433 | * This is not linked in anywhere.
|
---|
| 434 | * @param paPages Array which should be filled with the address of the physical pages.
|
---|
| 435 | */
|
---|
| 436 | int VBOXCALL supdrvOSLockMemOne(PSUPDRVMEMREF pMem, PSUPPAGE paPages)
|
---|
| 437 | {
|
---|
| 438 | /* paranoia */
|
---|
| 439 | if (!pMem->cb)
|
---|
| 440 | {
|
---|
| 441 | AssertMsgFailed(("Fool! No memory to lock!\n"));
|
---|
| 442 | return SUPDRV_ERR_INVALID_PARAM;
|
---|
| 443 | }
|
---|
| 444 | Assert(RT_ALIGN(pMem->cb, PAGE_SIZE) == pMem->cb);
|
---|
| 445 |
|
---|
| 446 | /*
|
---|
| 447 | * Calc the number of MDLs we need to allocate.
|
---|
| 448 | */
|
---|
| 449 | unsigned cMdls = pMem->cb / MAX_LOCK_MEM_SIZE;
|
---|
| 450 | if ((pMem->cb % MAX_LOCK_MEM_SIZE) > 0)
|
---|
| 451 | cMdls++;
|
---|
| 452 |
|
---|
| 453 | /*
|
---|
| 454 | * Allocate memory for the MDL pointer array.
|
---|
| 455 | */
|
---|
[2653] | 456 | pMem->u.locked.papMdl = (PMDL *)ExAllocatePoolWithTag(NonPagedPool, sizeof(*pMem->u.locked.papMdl) * cMdls, SUPDRV_NT_POOL_TAG);
|
---|
[1] | 457 | if (!pMem->u.locked.papMdl)
|
---|
| 458 | {
|
---|
| 459 | AssertMsgFailed(("shit, couldn't allocated %d bytes for the mdl pointer array!\n", sizeof(*pMem->u.locked.papMdl) * cMdls));
|
---|
| 460 | return SUPDRV_ERR_NO_MEMORY;
|
---|
| 461 | }
|
---|
| 462 |
|
---|
| 463 | /*
|
---|
| 464 | * Loop locking down the sub parts of the memory.
|
---|
| 465 | */
|
---|
| 466 | PSUPPAGE pPage = paPages;
|
---|
| 467 | unsigned cbTotal = 0;
|
---|
| 468 | uint8_t *pu8 = (uint8_t *)pMem->pvR3;
|
---|
| 469 | for (unsigned i = 0; i < cMdls; i++)
|
---|
| 470 | {
|
---|
| 471 | /*
|
---|
| 472 | * Calc the number of bytes to lock this time.
|
---|
| 473 | */
|
---|
| 474 | unsigned cbCur = pMem->cb - cbTotal;
|
---|
| 475 | if (cbCur > MAX_LOCK_MEM_SIZE)
|
---|
| 476 | cbCur = MAX_LOCK_MEM_SIZE;
|
---|
| 477 |
|
---|
| 478 | if (cbCur == 0)
|
---|
| 479 | AssertMsgFailed(("cbCur: 0!\n"));
|
---|
| 480 |
|
---|
| 481 | /*
|
---|
| 482 | * Allocate pMdl.
|
---|
| 483 | */
|
---|
| 484 | PMDL pMdl = IoAllocateMdl(pu8, cbCur, FALSE, FALSE, NULL);
|
---|
| 485 | if (!pMdl)
|
---|
| 486 | {
|
---|
| 487 | AssertMsgFailed(("Ops! IoAllocateMdl failed for pu8=%p and cb=%d\n", pu8, cbCur));
|
---|
| 488 | return SUPDRV_ERR_NO_MEMORY;
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 | /*
|
---|
| 492 | * Lock the pages.
|
---|
| 493 | */
|
---|
| 494 | NTSTATUS rc = STATUS_SUCCESS;
|
---|
| 495 | __try
|
---|
| 496 | {
|
---|
| 497 | MmProbeAndLockPages(pMdl, UserMode, IoModifyAccess);
|
---|
| 498 | }
|
---|
| 499 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 500 | {
|
---|
| 501 | rc = GetExceptionCode();
|
---|
| 502 | dprintf(("supdrvOSLockMemOne: Exception Code %#x\n", rc));
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | if (!NT_SUCCESS(rc))
|
---|
| 506 | {
|
---|
| 507 | /*
|
---|
| 508 | * Cleanup and fail.
|
---|
| 509 | */
|
---|
| 510 | IoFreeMdl(pMdl);
|
---|
| 511 | while (i-- > 0)
|
---|
| 512 | {
|
---|
| 513 | MmUnlockPages(pMem->u.locked.papMdl[i]);
|
---|
| 514 | IoFreeMdl(pMem->u.locked.papMdl[i]);
|
---|
| 515 | }
|
---|
| 516 | ExFreePool(pMem->u.locked.papMdl);
|
---|
| 517 | pMem->u.locked.papMdl = NULL;
|
---|
| 518 | return SUPDRV_ERR_LOCK_FAILED;
|
---|
| 519 | }
|
---|
| 520 |
|
---|
| 521 | /*
|
---|
| 522 | * Add MDL to array and update the pages.
|
---|
| 523 | */
|
---|
| 524 | pMem->u.locked.papMdl[i] = pMdl;
|
---|
| 525 |
|
---|
| 526 | const uintptr_t *pauPFNs = (uintptr_t *)(pMdl + 1); /* ASSUMES ULONG_PTR == uintptr_t, NTDDK4 doesn't have ULONG_PTR. */
|
---|
| 527 | for (unsigned iPage = 0, cPages = cbCur >> PAGE_SHIFT; iPage < cPages; iPage++)
|
---|
| 528 | {
|
---|
| 529 | pPage->Phys = (RTHCPHYS)pauPFNs[iPage] << PAGE_SHIFT;
|
---|
| 530 | pPage->uReserved = 0;
|
---|
| 531 | pPage++;
|
---|
| 532 | }
|
---|
| 533 |
|
---|
| 534 | /* next */
|
---|
| 535 | cbTotal += cbCur;
|
---|
| 536 | pu8 += cbCur;
|
---|
| 537 | }
|
---|
| 538 |
|
---|
| 539 | /*
|
---|
| 540 | * Finish structure and return succesfully.
|
---|
| 541 | */
|
---|
| 542 | pMem->u.locked.cMdls = cMdls;
|
---|
| 543 |
|
---|
| 544 | dprintf2(("supdrvOSLockMemOne: pvR3=%p cb=%d cMdls=%d\n",
|
---|
| 545 | pMem->pvR3, pMem->cb, cMdls));
|
---|
| 546 | return 0;
|
---|
| 547 | }
|
---|
| 548 |
|
---|
| 549 |
|
---|
| 550 | /**
|
---|
| 551 | * Unlocks the memory pointed to by pv.
|
---|
| 552 | *
|
---|
| 553 | * @param pv Memory to unlock.
|
---|
| 554 | * @param cb Size of the memory (debug).
|
---|
| 555 | */
|
---|
| 556 | void VBOXCALL supdrvOSUnlockMemOne(PSUPDRVMEMREF pMem)
|
---|
| 557 | {
|
---|
| 558 | dprintf2(("supdrvOSUnlockMemOne: pvR3=%p cb=%d cMdl=%p papMdl=%p\n",
|
---|
| 559 | pMem->pvR3, pMem->cb, pMem->u.locked.cMdls, pMem->u.locked.papMdl));
|
---|
| 560 |
|
---|
| 561 | for (unsigned i = 0; i < pMem->u.locked.cMdls; i++)
|
---|
| 562 | {
|
---|
| 563 | MmUnlockPages(pMem->u.locked.papMdl[i]);
|
---|
| 564 | IoFreeMdl(pMem->u.locked.papMdl[i]);
|
---|
| 565 | }
|
---|
| 566 |
|
---|
| 567 | ExFreePool(pMem->u.locked.papMdl);
|
---|
| 568 | pMem->u.locked.papMdl = NULL;
|
---|
| 569 | }
|
---|
| 570 |
|
---|
| 571 |
|
---|
| 572 | /**
|
---|
| 573 | * OS Specific code for allocating page aligned memory with continuous fixed
|
---|
| 574 | * physical paged backing.
|
---|
| 575 | *
|
---|
| 576 | * @returns 0 on success.
|
---|
| 577 | * @returns SUPDRV_ERR_* on failure.
|
---|
| 578 | * @param pMem Memory reference record of the memory to be allocated.
|
---|
| 579 | * (This is not linked in anywhere.)
|
---|
| 580 | * @param ppvR0 Where to store the virtual address of the ring-0 mapping. (optional)
|
---|
| 581 | * @param ppvR3 Where to store the virtual address of the ring-3 mapping.
|
---|
| 582 | * @param pHCPhys Where to store the physical address.
|
---|
| 583 | */
|
---|
[1480] | 584 | int VBOXCALL supdrvOSContAllocOne(PSUPDRVMEMREF pMem, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys)
|
---|
[1] | 585 | {
|
---|
| 586 | Assert(ppvR3);
|
---|
| 587 | Assert(pHCPhys);
|
---|
| 588 |
|
---|
| 589 | /*
|
---|
| 590 | * Try allocate the memory.
|
---|
| 591 | */
|
---|
| 592 | PHYSICAL_ADDRESS Phys;
|
---|
| 593 | Phys.HighPart = 0;
|
---|
| 594 | Phys.LowPart = ~0;
|
---|
| 595 | unsigned cbAligned = RT_ALIGN(pMem->cb, PAGE_SIZE);
|
---|
| 596 | pMem->pvR0 = MmAllocateContiguousMemory(cbAligned, Phys);
|
---|
| 597 | if (!pMem->pvR0)
|
---|
| 598 | return SUPDRV_ERR_NO_MEMORY;
|
---|
| 599 |
|
---|
| 600 | /*
|
---|
| 601 | * Map into user space.
|
---|
| 602 | */
|
---|
| 603 | int rc = SUPDRV_ERR_NO_MEMORY;
|
---|
| 604 | pMem->u.cont.pMdl = IoAllocateMdl(pMem->pvR0, cbAligned, FALSE, FALSE, NULL);
|
---|
| 605 | if (pMem->u.cont.pMdl)
|
---|
| 606 | {
|
---|
| 607 | MmBuildMdlForNonPagedPool(pMem->u.cont.pMdl);
|
---|
| 608 | __try
|
---|
| 609 | {
|
---|
[1480] | 610 | pMem->pvR3 = (RTR3PTR)MmMapLockedPages(pMem->u.cont.pMdl, UserMode);
|
---|
[1] | 611 | if (pMem->pvR3)
|
---|
| 612 | {
|
---|
| 613 | /*
|
---|
| 614 | * Done, setup pMem and return values.
|
---|
| 615 | */
|
---|
| 616 | #ifdef __AMD64__
|
---|
| 617 | MmProtectMdlSystemAddress(pMem->u.cont.pMdl, PAGE_EXECUTE_READWRITE);
|
---|
| 618 | #endif
|
---|
| 619 | *ppvR3 = pMem->pvR3;
|
---|
| 620 | if (ppvR0)
|
---|
| 621 | *ppvR0 = pMem->pvR0;
|
---|
| 622 | const uintptr_t *pauPFNs = (const uintptr_t *)(pMem->u.cont.pMdl + 1); /* ASSUMES ULONG_PTR == uintptr_t, NTDDK4 doesn't have ULONG_PTR. */
|
---|
| 623 | *pHCPhys = (RTHCPHYS)pauPFNs[0] << PAGE_SHIFT;
|
---|
| 624 | dprintf2(("supdrvOSContAllocOne: pvR0=%p pvR3=%p cb=%d pMdl=%p *pHCPhys=%VHp\n",
|
---|
| 625 | pMem->pvR0, pMem->pvR3, pMem->cb, pMem->u.mem.pMdl, *pHCPhys));
|
---|
| 626 | return 0;
|
---|
| 627 | }
|
---|
| 628 | }
|
---|
| 629 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 630 | {
|
---|
| 631 | NTSTATUS rc = GetExceptionCode();
|
---|
| 632 | dprintf(("supdrvOSContAllocOne: Exception Code %#x\n", rc));
|
---|
| 633 | }
|
---|
| 634 | IoFreeMdl(pMem->u.cont.pMdl);
|
---|
| 635 | rc = SUPDRV_ERR_LOCK_FAILED;
|
---|
| 636 | }
|
---|
| 637 | MmFreeContiguousMemory(pMem->pvR0);
|
---|
| 638 | pMem->pvR0 = NULL;
|
---|
| 639 | return rc;
|
---|
| 640 | }
|
---|
| 641 |
|
---|
| 642 |
|
---|
| 643 | /**
|
---|
| 644 | * Frees contiguous memory.
|
---|
| 645 | *
|
---|
| 646 | * @param pMem Memory reference record of the memory to be freed.
|
---|
| 647 | */
|
---|
| 648 | void VBOXCALL supdrvOSContFreeOne(PSUPDRVMEMREF pMem)
|
---|
| 649 | {
|
---|
| 650 | __try
|
---|
| 651 | {
|
---|
| 652 | dprintf2(("supdrvOSContFreeOne: pvR0=%p pvR3=%p cb=%d pMdl=%p\n",
|
---|
| 653 | pMem->pvR0, pMem->pvR3, pMem->cb, pMem->u.cont.pMdl));
|
---|
| 654 | if (pMem->pvR3)
|
---|
| 655 | {
|
---|
[1480] | 656 | MmUnmapLockedPages((void *)pMem->pvR3, pMem->u.cont.pMdl);
|
---|
[1] | 657 | dprintf2(("MmUnmapLockedPages ok!\n"));
|
---|
| 658 | pMem->pvR3 = NULL;
|
---|
| 659 | }
|
---|
| 660 |
|
---|
| 661 | IoFreeMdl(pMem->u.cont.pMdl);
|
---|
| 662 | dprintf2(("IoFreeMdl ok!\n"));
|
---|
| 663 | pMem->u.cont.pMdl = NULL;
|
---|
| 664 |
|
---|
| 665 | MmFreeContiguousMemory(pMem->pvR0);
|
---|
| 666 | dprintf2(("MmFreeContiguousMemory ok!\n"));
|
---|
| 667 | pMem->pvR0 = NULL;
|
---|
| 668 | }
|
---|
| 669 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 670 | {
|
---|
| 671 | NTSTATUS rc = GetExceptionCode();
|
---|
| 672 | dprintf(("supdrvOSContFreeOne: Exception Code %#x\n", rc));
|
---|
| 673 | }
|
---|
| 674 | }
|
---|
| 675 |
|
---|
| 676 |
|
---|
| 677 | /**
|
---|
| 678 | * Allocates memory which mapped into both kernel and user space.
|
---|
| 679 | * The returned memory is page aligned and so is the allocation.
|
---|
| 680 | *
|
---|
| 681 | * @returns 0 on success.
|
---|
| 682 | * @returns SUPDRV_ERR_* on failure.
|
---|
| 683 | * @param pMem Memory reference record of the memory to be allocated.
|
---|
| 684 | * (This is not linked in anywhere.)
|
---|
| 685 | * @param ppvR0 Where to store the address of the Ring-0 mapping.
|
---|
| 686 | * @param ppvR3 Where to store the address of the Ring-3 mapping.
|
---|
| 687 | */
|
---|
[1480] | 688 | int VBOXCALL supdrvOSMemAllocOne(PSUPDRVMEMREF pMem, PRTR0PTR ppvR0, PRTR3PTR ppvR3)
|
---|
[1] | 689 | {
|
---|
| 690 | Assert(ppvR0);
|
---|
| 691 | Assert(ppvR3);
|
---|
| 692 |
|
---|
| 693 | /*
|
---|
| 694 | * Try allocate the memory.
|
---|
| 695 | */
|
---|
| 696 | unsigned cbAligned = RT_ALIGN(RT_MAX(pMem->cb, PAGE_SIZE * 2), PAGE_SIZE);
|
---|
[2653] | 697 | pMem->pvR0 = ExAllocatePoolWithTag(NonPagedPool, cbAligned, SUPDRV_NT_POOL_TAG);
|
---|
[1] | 698 | if (!pMem->pvR0)
|
---|
| 699 | return SUPDRV_ERR_NO_MEMORY;
|
---|
| 700 |
|
---|
| 701 | /*
|
---|
| 702 | * Map into user space.
|
---|
| 703 | */
|
---|
| 704 | int rc = SUPDRV_ERR_NO_MEMORY;
|
---|
| 705 | pMem->u.mem.pMdl = IoAllocateMdl(pMem->pvR0, cbAligned, FALSE, FALSE, NULL);
|
---|
| 706 | if (pMem->u.mem.pMdl)
|
---|
| 707 | {
|
---|
| 708 | MmBuildMdlForNonPagedPool(pMem->u.mem.pMdl);
|
---|
| 709 | __try
|
---|
| 710 | {
|
---|
[1480] | 711 | pMem->pvR3 = (RTR3PTR)MmMapLockedPages(pMem->u.mem.pMdl, UserMode);
|
---|
[1] | 712 | if (pMem->pvR3)
|
---|
| 713 | {
|
---|
| 714 | /*
|
---|
| 715 | * Done, setup pMem and return values.
|
---|
| 716 | */
|
---|
| 717 | *ppvR3 = pMem->pvR3;
|
---|
| 718 | *ppvR0 = pMem->pvR0;
|
---|
| 719 | dprintf2(("supdrvOSContAllocOne: pvR0=%p pvR3=%p cb=%d pMdl=%p\n",
|
---|
| 720 | pMem->pvR0, pMem->pvR3, pMem->cb, pMem->u.mem.pMdl));
|
---|
| 721 | return 0;
|
---|
| 722 | }
|
---|
| 723 | }
|
---|
| 724 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 725 | {
|
---|
| 726 | NTSTATUS rc = GetExceptionCode();
|
---|
| 727 | dprintf(("supdrvOSContAllocOne: Exception Code %#x\n", rc));
|
---|
| 728 | }
|
---|
| 729 | rc = SUPDRV_ERR_LOCK_FAILED;
|
---|
| 730 |
|
---|
| 731 | IoFreeMdl(pMem->u.mem.pMdl);
|
---|
| 732 | pMem->u.mem.pMdl = NULL;
|
---|
| 733 | pMem->pvR3 = NULL;
|
---|
| 734 | }
|
---|
| 735 |
|
---|
| 736 | MmFreeContiguousMemory(pMem->pvR0);
|
---|
| 737 | pMem->pvR0 = NULL;
|
---|
| 738 | return rc;
|
---|
| 739 | }
|
---|
| 740 |
|
---|
| 741 |
|
---|
| 742 | /**
|
---|
| 743 | * Get the physical addresses of the pages in the allocation.
|
---|
| 744 | * This is called while inside bundle the spinlock.
|
---|
| 745 | *
|
---|
| 746 | * @param pMem Memory reference record of the memory.
|
---|
| 747 | * @param paPages Where to store the page addresses.
|
---|
| 748 | */
|
---|
| 749 | void VBOXCALL supdrvOSMemGetPages(PSUPDRVMEMREF pMem, PSUPPAGE paPages)
|
---|
| 750 | {
|
---|
| 751 | const unsigned cPages = RT_ALIGN(pMem->cb, PAGE_SIZE) >> PAGE_SHIFT;
|
---|
| 752 | const uintptr_t *pauPFNs = (const uintptr_t *)(pMem->u.mem.pMdl + 1); /* ASSUMES ULONG_PTR == uintptr_t, NTDDK doesn't have ULONG_PTR. */
|
---|
| 753 | for (unsigned iPage = 0; iPage < cPages; iPage++)
|
---|
| 754 | {
|
---|
| 755 | paPages[iPage].Phys = (RTHCPHYS)pauPFNs[iPage] << PAGE_SHIFT;
|
---|
| 756 | paPages[iPage].uReserved = 0;
|
---|
| 757 | }
|
---|
| 758 | }
|
---|
| 759 |
|
---|
| 760 |
|
---|
| 761 | /**
|
---|
| 762 | * Frees memory allocated by supdrvOSMemAllocOne().
|
---|
| 763 | *
|
---|
| 764 | * @param pMem Memory reference record of the memory to be free.
|
---|
| 765 | */
|
---|
| 766 | void VBOXCALL supdrvOSMemFreeOne(PSUPDRVMEMREF pMem)
|
---|
| 767 | {
|
---|
| 768 | __try
|
---|
| 769 | {
|
---|
| 770 | dprintf2(("supdrvOSContFreeOne: pvR0=%p pvR3=%p cb=%d pMdl=%p\n",
|
---|
| 771 | pMem->pvR0, pMem->pvR3, pMem->cb, pMem->u.mem.pMdl));
|
---|
| 772 | if (pMem->pvR3)
|
---|
| 773 | {
|
---|
[1480] | 774 | MmUnmapLockedPages((void *)pMem->pvR3, pMem->u.mem.pMdl);
|
---|
[1] | 775 | pMem->pvR3 = NULL;
|
---|
| 776 | dprintf2(("MmUnmapLockedPages ok!\n"));
|
---|
| 777 | }
|
---|
| 778 |
|
---|
| 779 | IoFreeMdl(pMem->u.mem.pMdl);
|
---|
| 780 | pMem->u.mem.pMdl = NULL;
|
---|
| 781 | dprintf2(("IoFreeMdl ok!\n"));
|
---|
| 782 |
|
---|
| 783 | ExFreePool(pMem->pvR0);
|
---|
| 784 | pMem->pvR0 = NULL;
|
---|
| 785 | dprintf2(("MmFreeContiguousMemory ok!\n"));
|
---|
| 786 | }
|
---|
| 787 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 788 | {
|
---|
| 789 | NTSTATUS rc = GetExceptionCode();
|
---|
| 790 | dprintf(("supdrvOSContFreeOne: Exception Code %#x\n", rc));
|
---|
| 791 | }
|
---|
| 792 | }
|
---|
| 793 |
|
---|
| 794 |
|
---|
| 795 | /**
|
---|
| 796 | * Gets the monotone timestamp (nano seconds).
|
---|
| 797 | * @returns NanoTS.
|
---|
| 798 | */
|
---|
| 799 | static inline uint64_t supdrvOSMonotime(void)
|
---|
| 800 | {
|
---|
| 801 | return (uint64_t)KeQueryInterruptTime() * 100;
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 |
|
---|
| 805 | /**
|
---|
| 806 | * Initializes the GIP.
|
---|
| 807 | *
|
---|
| 808 | * @returns NT status code.
|
---|
| 809 | * @param pDevExt Instance data. GIP stuff may be updated.
|
---|
| 810 | */
|
---|
| 811 | static NTSTATUS VBoxSupDrvGipInit(PSUPDRVDEVEXT pDevExt)
|
---|
| 812 | {
|
---|
| 813 | dprintf2(("VBoxSupDrvTermGip:\n"));
|
---|
| 814 |
|
---|
| 815 | /*
|
---|
| 816 | * Try allocate the memory.
|
---|
| 817 | * Make sure it's below 4GB for 32-bit GC support
|
---|
| 818 | */
|
---|
| 819 | NTSTATUS rc;
|
---|
| 820 | PHYSICAL_ADDRESS Phys;
|
---|
| 821 | Phys.HighPart = 0;
|
---|
| 822 | Phys.LowPart = ~0;
|
---|
| 823 | PSUPGLOBALINFOPAGE pGip = (PSUPGLOBALINFOPAGE)MmAllocateContiguousMemory(PAGE_SIZE, Phys);
|
---|
| 824 | if (pGip)
|
---|
| 825 | {
|
---|
| 826 | if (!((uintptr_t)pGip & (PAGE_SIZE - 1)))
|
---|
| 827 | {
|
---|
| 828 | pDevExt->pGipMdl = IoAllocateMdl(pGip, PAGE_SIZE, FALSE, FALSE, NULL);
|
---|
| 829 | if (pDevExt->pGipMdl)
|
---|
| 830 | {
|
---|
| 831 | MmBuildMdlForNonPagedPool(pDevExt->pGipMdl);
|
---|
| 832 |
|
---|
| 833 | /*
|
---|
| 834 | * Figure the timer interval and frequency.
|
---|
| 835 | * It turns out trying 1023Hz doesn't work. So, we'll set the max Hz at 128 for now.
|
---|
| 836 | */
|
---|
| 837 | ExSetTimerResolution(156250, TRUE);
|
---|
| 838 | ULONG ulClockIntervalActual = ExSetTimerResolution(0, FALSE);
|
---|
| 839 | ULONG ulClockInterval = RT_MAX(ulClockIntervalActual, 78125); /* 1/128 */
|
---|
| 840 | ULONG ulClockFreq = 10000000 / ulClockInterval;
|
---|
| 841 | pDevExt->ulGipTimerInterval = ulClockInterval / 10000; /* ms */
|
---|
| 842 |
|
---|
| 843 | /*
|
---|
| 844 | * Call common initialization routine.
|
---|
| 845 | */
|
---|
| 846 | Phys = MmGetPhysicalAddress(pGip); /* could perhaps use the Mdl, not that it looks much better */
|
---|
| 847 | supdrvGipInit(pDevExt, pGip, (RTHCPHYS)Phys.QuadPart, supdrvOSMonotime(), ulClockFreq);
|
---|
| 848 |
|
---|
| 849 | /*
|
---|
| 850 | * Initialize the timer.
|
---|
| 851 | */
|
---|
| 852 | KeInitializeTimerEx(&pDevExt->GipTimer, SynchronizationTimer);
|
---|
[1027] | 853 | KeInitializeDpc(&pDevExt->GipDpc, VBoxSupDrvGipTimer, pDevExt);
|
---|
| 854 |
|
---|
| 855 | /*
|
---|
| 856 | * Initialize the DPCs we're using to update the per-cpu GIP data.
|
---|
| 857 | * (Not sure if we need to be this careful with KeSetTargetProcessorDpc...)
|
---|
| 858 | */
|
---|
| 859 | UNICODE_STRING RoutineName;
|
---|
| 860 | RtlInitUnicodeString(&RoutineName, L"KeSetTargetProcessorDpc");
|
---|
| 861 | VOID (*pfnKeSetTargetProcessorDpc)(IN PRKDPC, IN CCHAR) = (VOID (*)(IN PRKDPC, IN CCHAR))MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 862 |
|
---|
| 863 | for (unsigned i = 0; i < RT_ELEMENTS(pDevExt->aGipCpuDpcs); i++)
|
---|
| 864 | {
|
---|
| 865 | KeInitializeDpc(&pDevExt->aGipCpuDpcs[i], VBoxSupDrvGipPerCpuDpc, pGip);
|
---|
| 866 | KeSetImportanceDpc(&pDevExt->aGipCpuDpcs[i], HighImportance);
|
---|
| 867 | if (pfnKeSetTargetProcessorDpc)
|
---|
| 868 | pfnKeSetTargetProcessorDpc(&pDevExt->aGipCpuDpcs[i], i);
|
---|
| 869 | }
|
---|
| 870 |
|
---|
[1] | 871 | dprintf(("VBoxSupDrvGipInit: ulClockFreq=%ld ulClockInterval=%ld ulClockIntervalActual=%ld Phys=%x%08x\n",
|
---|
| 872 | ulClockFreq, ulClockInterval, ulClockIntervalActual, Phys.HighPart, Phys.LowPart));
|
---|
| 873 | return STATUS_SUCCESS;
|
---|
| 874 | }
|
---|
[1027] | 875 |
|
---|
| 876 | dprintf(("VBoxSupDrvInitGip: IoAllocateMdl failed for %p/PAGE_SIZE\n", pGip));
|
---|
| 877 | rc = STATUS_NO_MEMORY;
|
---|
[1] | 878 | }
|
---|
| 879 | else
|
---|
| 880 | {
|
---|
| 881 | dprintf(("VBoxSupDrvInitGip: GIP memory is not page aligned! pGip=%p\n", pGip));
|
---|
| 882 | rc = STATUS_INVALID_ADDRESS;
|
---|
| 883 | }
|
---|
| 884 | MmFreeContiguousMemory(pGip);
|
---|
| 885 | }
|
---|
| 886 | else
|
---|
| 887 | {
|
---|
| 888 | dprintf(("VBoxSupDrvInitGip: no cont memory.\n"));
|
---|
| 889 | rc = STATUS_NO_MEMORY;
|
---|
| 890 | }
|
---|
| 891 | return rc;
|
---|
| 892 | }
|
---|
| 893 |
|
---|
| 894 |
|
---|
| 895 | /**
|
---|
| 896 | * Terminates the GIP.
|
---|
| 897 | *
|
---|
| 898 | * @returns negative errno.
|
---|
| 899 | * @param pDevExt Instance data. GIP stuff may be updated.
|
---|
| 900 | */
|
---|
| 901 | static void VBoxSupDrvGipTerm(PSUPDRVDEVEXT pDevExt)
|
---|
| 902 | {
|
---|
| 903 | dprintf(("VBoxSupDrvTermGip:\n"));
|
---|
| 904 | PSUPGLOBALINFOPAGE pGip;
|
---|
| 905 |
|
---|
| 906 | /*
|
---|
| 907 | * Cancel the timer and wait on DPCs if it was still pending.
|
---|
| 908 | */
|
---|
| 909 | if (KeCancelTimer(&pDevExt->GipTimer))
|
---|
| 910 | {
|
---|
| 911 | UNICODE_STRING RoutineName;
|
---|
| 912 | RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
|
---|
| 913 | VOID (*pfnKeFlushQueuedDpcs)(VOID) = (VOID (*)(VOID))MmGetSystemRoutineAddress(&RoutineName);
|
---|
| 914 | if (pfnKeFlushQueuedDpcs)
|
---|
| 915 | pfnKeFlushQueuedDpcs();
|
---|
| 916 | }
|
---|
| 917 |
|
---|
| 918 | /*
|
---|
| 919 | * Uninitialize the content.
|
---|
| 920 | */
|
---|
| 921 | pGip = pDevExt->pGip;
|
---|
| 922 | pDevExt->pGip = NULL;
|
---|
| 923 | if (pGip)
|
---|
| 924 | {
|
---|
| 925 | supdrvGipTerm(pGip);
|
---|
| 926 |
|
---|
| 927 | /*
|
---|
| 928 | * Free the page.
|
---|
| 929 | */
|
---|
| 930 | if (pDevExt->pGipMdl)
|
---|
| 931 | {
|
---|
| 932 | IoFreeMdl(pDevExt->pGipMdl);
|
---|
| 933 | pDevExt->pGipMdl = NULL;
|
---|
| 934 | }
|
---|
| 935 | MmFreeContiguousMemory(pGip);
|
---|
| 936 | }
|
---|
| 937 | }
|
---|
| 938 |
|
---|
| 939 |
|
---|
| 940 | /**
|
---|
| 941 | * Timer callback function.
|
---|
[1027] | 942 | * The pvUser parameter is the pDevExt pointer.
|
---|
[1] | 943 | */
|
---|
[1027] | 944 | static void _stdcall VBoxSupDrvGipTimer(IN PKDPC pDpc, IN PVOID pvUser, IN PVOID SystemArgument1, IN PVOID SystemArgument2)
|
---|
[1] | 945 | {
|
---|
[1027] | 946 | PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
|
---|
| 947 | PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
|
---|
| 948 | if (pGip)
|
---|
| 949 | {
|
---|
| 950 | if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC)
|
---|
| 951 | supdrvGipUpdate(pGip, supdrvOSMonotime());
|
---|
| 952 | else
|
---|
| 953 | {
|
---|
| 954 | RTCCUINTREG xFL = ASMGetFlags();
|
---|
| 955 | ASMIntDisable();
|
---|
| 956 |
|
---|
[2653] | 957 | /*
|
---|
| 958 | * We cannot do other than assume a 1:1 relation ship between the
|
---|
| 959 | * affinity mask and the process despite the warnings in the docs.
|
---|
[1027] | 960 | * If someone knows a better way to get this done, please let bird know.
|
---|
| 961 | */
|
---|
| 962 | unsigned iSelf = KeGetCurrentProcessorNumber();
|
---|
| 963 | KAFFINITY Mask = KeQueryActiveProcessors();
|
---|
| 964 |
|
---|
| 965 | for (unsigned i = 0; i < RT_ELEMENTS(pDevExt->aGipCpuDpcs); i++)
|
---|
| 966 | {
|
---|
[2653] | 967 | if ( i != iSelf
|
---|
[1850] | 968 | && (Mask & RT_BIT_64(i)))
|
---|
[1027] | 969 | KeInsertQueueDpc(&pDevExt->aGipCpuDpcs[i], 0, 0);
|
---|
| 970 | }
|
---|
| 971 |
|
---|
| 972 | /* Run the normal update. */
|
---|
| 973 | supdrvGipUpdate(pGip, supdrvOSMonotime());
|
---|
| 974 |
|
---|
| 975 | ASMSetFlags(xFL);
|
---|
| 976 | }
|
---|
| 977 | }
|
---|
| 978 | }
|
---|
| 979 |
|
---|
| 980 |
|
---|
| 981 | /**
|
---|
| 982 | * Per cpu callback callback function.
|
---|
| 983 | * The pvUser parameter is the pGip pointer.
|
---|
| 984 | */
|
---|
| 985 | static void _stdcall VBoxSupDrvGipPerCpuDpc(IN PKDPC pDpc, IN PVOID pvUser, IN PVOID SystemArgument1, IN PVOID SystemArgument2)
|
---|
| 986 | {
|
---|
[1] | 987 | PSUPGLOBALINFOPAGE pGip = (PSUPGLOBALINFOPAGE)pvUser;
|
---|
[1027] | 988 | supdrvGipUpdatePerCpu(pGip, supdrvOSMonotime(), ASMGetApicId());
|
---|
[1] | 989 | }
|
---|
| 990 |
|
---|
| 991 |
|
---|
| 992 | /**
|
---|
| 993 | * Maps the GIP into user space.
|
---|
| 994 | *
|
---|
| 995 | * @returns negative errno.
|
---|
| 996 | * @param pDevExt Instance data.
|
---|
| 997 | */
|
---|
| 998 | int VBOXCALL supdrvOSGipMap(PSUPDRVDEVEXT pDevExt, PCSUPGLOBALINFOPAGE *ppGip)
|
---|
| 999 | {
|
---|
| 1000 | dprintf2(("supdrvOSGipMap: ppGip=%p (pDevExt->pGipMdl=%p)\n", ppGip, pDevExt->pGipMdl));
|
---|
| 1001 |
|
---|
| 1002 | /*
|
---|
| 1003 | * Map into user space.
|
---|
| 1004 | */
|
---|
| 1005 | int rc = 0;
|
---|
| 1006 | void *pv = NULL;
|
---|
| 1007 | __try
|
---|
| 1008 | {
|
---|
| 1009 | *ppGip = (PCSUPGLOBALINFOPAGE)MmMapLockedPages(pDevExt->pGipMdl, UserMode);
|
---|
| 1010 | }
|
---|
| 1011 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1012 | {
|
---|
| 1013 | NTSTATUS rcNt = GetExceptionCode();
|
---|
| 1014 | dprintf(("supdrvOsGipMap: Exception Code %#x\n", rcNt));
|
---|
| 1015 | rc = SUPDRV_ERR_LOCK_FAILED;
|
---|
| 1016 | }
|
---|
| 1017 |
|
---|
| 1018 | dprintf2(("supdrvOSGipMap: returns %d, *ppGip=%p\n", rc, *ppGip));
|
---|
| 1019 | return 0;
|
---|
| 1020 | }
|
---|
| 1021 |
|
---|
| 1022 |
|
---|
| 1023 | /**
|
---|
| 1024 | * Maps the GIP into user space.
|
---|
| 1025 | *
|
---|
| 1026 | * @returns negative errno.
|
---|
| 1027 | * @param pDevExt Instance data.
|
---|
| 1028 | */
|
---|
| 1029 | int VBOXCALL supdrvOSGipUnmap(PSUPDRVDEVEXT pDevExt, PCSUPGLOBALINFOPAGE pGip)
|
---|
| 1030 | {
|
---|
| 1031 | dprintf2(("supdrvOSGipUnmap: pGip=%p (pGipMdl=%p)\n", pGip, pDevExt->pGipMdl));
|
---|
| 1032 |
|
---|
| 1033 | int rc = 0;
|
---|
| 1034 | __try
|
---|
| 1035 | {
|
---|
| 1036 | MmUnmapLockedPages((void *)pGip, pDevExt->pGipMdl);
|
---|
| 1037 | }
|
---|
| 1038 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1039 | {
|
---|
| 1040 | NTSTATUS rcNt = GetExceptionCode();
|
---|
| 1041 | dprintf(("supdrvOSGipUnmap: Exception Code %#x\n", rcNt));
|
---|
| 1042 | rc = SUPDRV_ERR_GENERAL_FAILURE;
|
---|
| 1043 | }
|
---|
| 1044 | dprintf2(("supdrvOSGipUnmap: returns %d\n", rc));
|
---|
| 1045 | return rc;
|
---|
| 1046 | }
|
---|
| 1047 |
|
---|
| 1048 |
|
---|
| 1049 | /**
|
---|
| 1050 | * Resumes the GIP updating.
|
---|
| 1051 | *
|
---|
| 1052 | * @param pDevExt Instance data.
|
---|
| 1053 | */
|
---|
| 1054 | void VBOXCALL supdrvOSGipResume(PSUPDRVDEVEXT pDevExt)
|
---|
| 1055 | {
|
---|
| 1056 | dprintf2(("supdrvOSGipResume:\n"));
|
---|
| 1057 | LARGE_INTEGER DueTime;
|
---|
| 1058 | DueTime.QuadPart = -10000; /* 1ms, relative */
|
---|
| 1059 | KeSetTimerEx(&pDevExt->GipTimer, DueTime, pDevExt->ulGipTimerInterval, &pDevExt->GipDpc);
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 |
|
---|
| 1063 | /**
|
---|
| 1064 | * Suspends the GIP updating.
|
---|
| 1065 | *
|
---|
| 1066 | * @param pDevExt Instance data.
|
---|
| 1067 | */
|
---|
| 1068 | void VBOXCALL supdrvOSGipSuspend(PSUPDRVDEVEXT pDevExt)
|
---|
| 1069 | {
|
---|
| 1070 | dprintf2(("supdrvOSGipSuspend:\n"));
|
---|
| 1071 | KeCancelTimer(&pDevExt->GipTimer);
|
---|
| 1072 | #ifdef __AMD64__
|
---|
| 1073 | ExSetTimerResolution(0, FALSE);
|
---|
| 1074 | #endif
|
---|
| 1075 | }
|
---|
| 1076 |
|
---|
| 1077 |
|
---|
| 1078 | /**
|
---|
| 1079 | * Allocate small amounts of memory which is does not have the NX bit set.
|
---|
| 1080 | *
|
---|
| 1081 | * @returns Pointer to the allocated memory
|
---|
| 1082 | * @returns NULL if out of memory.
|
---|
| 1083 | * @param cb Size of the memory block.
|
---|
| 1084 | */
|
---|
| 1085 | void *VBOXCALL supdrvOSExecAlloc(size_t cb)
|
---|
| 1086 | {
|
---|
| 1087 | #if 0 //def __AMD64__
|
---|
| 1088 | cb = RT_ALIGN_Z(cb, PAGE_SIZE);
|
---|
[2653] | 1089 | void *pv = ExAllocatePoolWithTag(NonPagedPool, cb, SUPDRV_NT_POOL_TAG);
|
---|
[1] | 1090 | if (pv)
|
---|
| 1091 | {
|
---|
| 1092 | /*
|
---|
| 1093 | * Create a kernel mapping which we make PAGE_EXECUTE_READWRITE using
|
---|
| 1094 | * the MmProtectMdlSystemAddress API.
|
---|
| 1095 | */
|
---|
| 1096 | int rc = SUPDRV_ERR_NO_MEMORY;
|
---|
| 1097 | PMDL pMdl = IoAllocateMdl(pv, cb, FALSE, FALSE, NULL);
|
---|
| 1098 | if (pMdl)
|
---|
| 1099 | {
|
---|
| 1100 | MmBuildMdlForNonPagedPool(pMdl);
|
---|
| 1101 | __try
|
---|
| 1102 | {
|
---|
| 1103 | void *pvMapping = MmMapLockedPages(pMdl, KernelMode);
|
---|
| 1104 | if (pvMapping)
|
---|
| 1105 | {
|
---|
| 1106 | NTSTATUS rc = MmProtectMdlSystemAddress(pMdl, PAGE_EXECUTE_READWRITE);
|
---|
| 1107 | if (NT_SUCCESS(rc))
|
---|
| 1108 | {
|
---|
| 1109 | /*
|
---|
| 1110 | * Create tracking structure and insert it into the list.
|
---|
| 1111 | */
|
---|
| 1112 |
|
---|
| 1113 |
|
---|
| 1114 | return pvMapping;
|
---|
| 1115 | }
|
---|
| 1116 |
|
---|
| 1117 | MmUnmapLockedPages(pvMapping, pMdl);
|
---|
| 1118 | }
|
---|
| 1119 | }
|
---|
| 1120 | __except(EXCEPTION_EXECUTE_HANDLER)
|
---|
| 1121 | {
|
---|
| 1122 | NTSTATUS rc = GetExceptionCode();
|
---|
| 1123 | dprintf(("supdrvOSExecAlloc: Exception Code %#x\n", rc));
|
---|
| 1124 | }
|
---|
| 1125 | IoFreeMdl(pMem->u.mem.pMdl);
|
---|
| 1126 | }
|
---|
| 1127 | ExFreePool(pv);
|
---|
| 1128 | }
|
---|
| 1129 | dprintf2(("supdrvOSExecAlloc(%d): returns NULL\n", cb));
|
---|
| 1130 | return NULL;
|
---|
| 1131 | #else
|
---|
[2653] | 1132 | void *pv = ExAllocatePoolWithTag(NonPagedPool, cb, SUPDRV_NT_POOL_TAG);
|
---|
[1] | 1133 | dprintf2(("supdrvOSExecAlloc(%d): returns %p\n", cb, pv));
|
---|
| 1134 | return pv;
|
---|
| 1135 | #endif
|
---|
| 1136 | }
|
---|
| 1137 |
|
---|
| 1138 |
|
---|
[1049] | 1139 | /**
|
---|
| 1140 | * Get the current CPU count.
|
---|
| 1141 | * @returns Number of cpus.
|
---|
| 1142 | */
|
---|
| 1143 | unsigned VBOXCALL supdrvOSGetCPUCount(void)
|
---|
| 1144 | {
|
---|
| 1145 | KAFFINITY Mask = KeQueryActiveProcessors();
|
---|
| 1146 | unsigned cCpus = 0;
|
---|
| 1147 | unsigned iBit;
|
---|
| 1148 | for (iBit = 0; iBit < sizeof(Mask) * 8; iBit++)
|
---|
[1850] | 1149 | if (Mask & RT_BIT_64(iBit))
|
---|
[1049] | 1150 | cCpus++;
|
---|
| 1151 | if (cCpus == 0) /* paranoia */
|
---|
[2653] | 1152 | cCpus = 1;
|
---|
[1049] | 1153 | return cCpus;
|
---|
| 1154 | }
|
---|
[1] | 1155 |
|
---|
[1049] | 1156 |
|
---|
[1] | 1157 | /**
|
---|
[1850] | 1158 | * Force async tsc mode (stub).
|
---|
| 1159 | */
|
---|
| 1160 | bool VBOXCALL supdrvOSGetForcedAsyncTscMode(void)
|
---|
| 1161 | {
|
---|
| 1162 | return false;
|
---|
| 1163 | }
|
---|
| 1164 |
|
---|
| 1165 |
|
---|
| 1166 | /**
|
---|
[1] | 1167 | * Converts a supdrv error code to an nt status code.
|
---|
| 1168 | *
|
---|
| 1169 | * @returns corresponding nt status code.
|
---|
| 1170 | * @param rc supdrv error code (SUPDRV_ERR_* defines).
|
---|
| 1171 | */
|
---|
| 1172 | static NTSTATUS VBoxSupDrvErr2NtStatus(int rc)
|
---|
| 1173 | {
|
---|
| 1174 | switch (rc)
|
---|
| 1175 | {
|
---|
| 1176 | case 0: return STATUS_SUCCESS;
|
---|
| 1177 | case SUPDRV_ERR_GENERAL_FAILURE: return STATUS_NOT_SUPPORTED;
|
---|
| 1178 | case SUPDRV_ERR_INVALID_PARAM: return STATUS_INVALID_PARAMETER;
|
---|
| 1179 | case SUPDRV_ERR_INVALID_MAGIC: return STATUS_UNKNOWN_REVISION;
|
---|
| 1180 | case SUPDRV_ERR_INVALID_HANDLE: return STATUS_INVALID_HANDLE;
|
---|
| 1181 | case SUPDRV_ERR_INVALID_POINTER: return STATUS_INVALID_ADDRESS;
|
---|
| 1182 | case SUPDRV_ERR_LOCK_FAILED: return STATUS_NOT_LOCKED;
|
---|
| 1183 | case SUPDRV_ERR_ALREADY_LOADED: return STATUS_IMAGE_ALREADY_LOADED;
|
---|
| 1184 | case SUPDRV_ERR_PERMISSION_DENIED: return STATUS_ACCESS_DENIED;
|
---|
| 1185 | case SUPDRV_ERR_VERSION_MISMATCH: return STATUS_REVISION_MISMATCH;
|
---|
| 1186 | }
|
---|
| 1187 |
|
---|
| 1188 | return STATUS_UNSUCCESSFUL;
|
---|
| 1189 | }
|
---|
| 1190 |
|
---|
| 1191 |
|
---|
| 1192 | /** Runtime assert implementation for Native Win32 Ring-0. */
|
---|
| 1193 | RTDECL(void) AssertMsg1(const char *pszExpr, unsigned uLine, const char *pszFile, const char *pszFunction)
|
---|
| 1194 | {
|
---|
| 1195 | DbgPrint("\n!!Assertion Failed!!\n"
|
---|
| 1196 | "Expression: %s\n"
|
---|
| 1197 | "Location : %s(%d) %s\n",
|
---|
| 1198 | pszExpr, pszFile, uLine, pszFunction);
|
---|
| 1199 | }
|
---|
| 1200 |
|
---|
| 1201 | int VBOXCALL mymemcmp(const void *pv1, const void *pv2, size_t cb)
|
---|
| 1202 | {
|
---|
| 1203 | const uint8_t *pb1 = (const uint8_t *)pv1;
|
---|
| 1204 | const uint8_t *pb2 = (const uint8_t *)pv2;
|
---|
| 1205 | for (; cb > 0; cb--, pb1++, pb2++)
|
---|
| 1206 | if (*pb1 != *pb2)
|
---|
| 1207 | return *pb1 - *pb2;
|
---|
| 1208 | return 0;
|
---|
| 1209 | }
|
---|
| 1210 |
|
---|