VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/win/SUPR0IdcClient-win.c@ 81784

Last change on this file since 81784 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 5.9 KB
Line 
1/* $Id: SUPR0IdcClient-win.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * VirtualBox Support Driver - IDC Client Lib, Windows Specific Code.
4 */
5
6/*
7 * Copyright (C) 2008-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "../SUPR0IdcClientInternal.h"
32#include <iprt/errcore.h>
33
34
35/*********************************************************************************************************************************
36* Defined Constants And Macros *
37*********************************************************************************************************************************/
38/** NT Device name. */
39#define DEVICE_NAME_NT L"\\Device\\VBoxDrv"
40
41
42/**
43 * Internal I/O Control call worker.
44 *
45 * @returns VBox status code.
46 * @param pDeviceObject The device object to call.
47 * @param pFileObject The file object for the connection.
48 * @param uReq The request.
49 * @param pReq The request packet.
50 */
51static int supR0IdcNtCallInternal(PDEVICE_OBJECT pDeviceObject, PFILE_OBJECT pFileObject, uint32_t uReq, PSUPDRVIDCREQHDR pReq)
52{
53 int rc;
54 IO_STATUS_BLOCK IoStatusBlock;
55 KEVENT Event;
56 PIRP pIrp;
57 NTSTATUS rcNt;
58
59 /*
60 * Build the request.
61 */
62 KeInitializeEvent(&Event, NotificationEvent, FALSE);
63 pIrp = IoBuildDeviceIoControlRequest(uReq, /* IoControlCode */
64 pDeviceObject,
65 pReq, /* InputBuffer */
66 pReq->cb, /* InputBufferLength */
67 pReq, /* OutputBuffer */
68 pReq->cb, /* OutputBufferLength */
69 TRUE, /* InternalDeviceIoControl (=> IRP_MJ_INTERNAL_DEVICE_CONTROL) */
70 &Event, /* Event */
71 &IoStatusBlock); /* IoStatusBlock */
72 if (pIrp)
73 {
74 IoGetNextIrpStackLocation(pIrp)->FileObject = pFileObject;
75
76 /*
77 * Call the driver, wait for an async request to complete (should never happen).
78 */
79 rcNt = IoCallDriver(pDeviceObject, pIrp);
80 if (rcNt == STATUS_PENDING)
81 {
82 rcNt = KeWaitForSingleObject(&Event, /* Object */
83 Executive, /* WaitReason */
84 KernelMode, /* WaitMode */
85 FALSE, /* Alertable */
86 NULL); /* TimeOut */
87 rcNt = IoStatusBlock.Status;
88 }
89 if (NT_SUCCESS(rcNt))
90 rc = pReq->rc;
91 else
92 rc = RTErrConvertFromNtStatus(rcNt);
93 }
94 else
95 rc = VERR_NO_MEMORY;
96 return rc;
97}
98
99
100int VBOXCALL supR0IdcNativeOpen(PSUPDRVIDCHANDLE pHandle, PSUPDRVIDCREQCONNECT pReq)
101{
102 PDEVICE_OBJECT pDeviceObject = NULL;
103 PFILE_OBJECT pFileObject = NULL;
104 UNICODE_STRING wszDeviceName;
105 NTSTATUS rcNt;
106 int rc;
107
108 /*
109 * Get the device object pointer.
110 */
111 RtlInitUnicodeString(&wszDeviceName, DEVICE_NAME_NT);
112 rcNt = IoGetDeviceObjectPointer(&wszDeviceName, FILE_ALL_ACCESS, &pFileObject, &pDeviceObject);
113 if (NT_SUCCESS(rcNt))
114 {
115 /*
116 * Make the connection call.
117 */
118 rc = supR0IdcNtCallInternal(pDeviceObject, pFileObject, SUPDRV_IDC_REQ_CONNECT, &pReq->Hdr);
119 if (RT_SUCCESS(rc))
120 {
121 pHandle->s.pDeviceObject = pDeviceObject;
122 pHandle->s.pFileObject = pFileObject;
123 return rc;
124 }
125
126 /* only the file object. */
127 ObDereferenceObject(pFileObject);
128 }
129 else
130 rc = RTErrConvertFromNtStatus(rcNt);
131
132 pHandle->s.pDeviceObject = NULL;
133 pHandle->s.pFileObject = NULL;
134 return rc;
135}
136
137
138int VBOXCALL supR0IdcNativeClose(PSUPDRVIDCHANDLE pHandle, PSUPDRVIDCREQHDR pReq)
139{
140 PFILE_OBJECT pFileObject = pHandle->s.pFileObject;
141 int rc = supR0IdcNtCallInternal(pHandle->s.pDeviceObject, pFileObject, SUPDRV_IDC_REQ_DISCONNECT, pReq);
142 if (RT_SUCCESS(rc))
143 {
144 pHandle->s.pDeviceObject = NULL;
145 pHandle->s.pFileObject = NULL;
146 ObDereferenceObject(pFileObject);
147 }
148
149 return rc;
150}
151
152
153int VBOXCALL supR0IdcNativeCall(PSUPDRVIDCHANDLE pHandle, uint32_t uReq, PSUPDRVIDCREQHDR pReq)
154{
155 return supR0IdcNtCallInternal(pHandle->s.pDeviceObject, pHandle->s.pFileObject, uReq, pReq);
156}
157
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