1 | /** @file
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2 | *
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3 | * VBoxGuestLib - A support library for VirtualBox guest additions:
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4 | * Physical memory heap
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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 | #define LOG_GROUP LOG_GROUP_HGCM
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23 | #include <VBox/log.h>
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24 |
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25 | #include <VBox/VBoxGuestLib.h>
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26 | #include "SysHlp.h"
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27 |
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28 | #include <iprt/assert.h>
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29 |
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30 | #ifndef VBGL_VBOXGUEST
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31 |
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32 | #if defined (__LINUX__) && !defined (__KERNEL__)
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33 | # include <unistd.h>
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34 | # include <errno.h>
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35 | # include <sys/fcntl.h>
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36 | # include <sys/ioctl.h>
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37 | #endif
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38 |
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39 | #ifndef __WIN__
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40 | # ifdef __cplusplus
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41 | extern "C" {
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42 | # endif
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43 | extern DECLVBGL(void *) vboxadd_cmc_open (void);
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44 | extern DECLVBGL(void) vboxadd_cmc_close (void *);
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45 | extern DECLVBGL(int) vboxadd_cmc_call (void *opaque, uint32_t func, void *data);
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46 | # ifdef __cplusplus
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47 | }
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48 | # endif
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49 | #endif
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50 |
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51 | int vbglDriverOpen (VBGLDRIVER *pDriver)
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52 | {
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53 | #ifdef __WIN__
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54 | UNICODE_STRING uszDeviceName;
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55 | RtlInitUnicodeString (&uszDeviceName, L"\\Device\\VBoxGuest");
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56 |
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57 | PDEVICE_OBJECT pDeviceObject = NULL;
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58 | PFILE_OBJECT pFileObject = NULL;
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59 |
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60 | NTSTATUS rc = IoGetDeviceObjectPointer (&uszDeviceName, FILE_ALL_ACCESS,
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61 | &pFileObject, &pDeviceObject);
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62 |
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63 | if (NT_SUCCESS (rc))
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64 | {
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65 | Log(("vbglDriverOpen VBoxGuest successful pDeviceObject=%x\n", pDeviceObject));
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66 | pDriver->pDeviceObject = pDeviceObject;
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67 | pDriver->pFileObject = pFileObject;
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68 | return VINF_SUCCESS;
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69 | }
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70 | /** @todo return RTErrConvertFromNtStatus(rc)! */
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71 | Log(("vbglDriverOpen VBoxGuest failed with ntstatus=%x\n", rc));
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72 | return rc;
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73 | #else
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74 | void *opaque;
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75 |
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76 | opaque = (void *) vboxadd_cmc_open ();
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77 | if (!opaque)
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78 | {
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79 | return VERR_NOT_IMPLEMENTED;
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80 | }
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81 | pDriver->opaque = opaque;
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82 | return VINF_SUCCESS;
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83 | #endif
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84 | }
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85 |
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86 | int vbglDriverIOCtl (VBGLDRIVER *pDriver, uint32_t u32Function, void *pvData, uint32_t cbData)
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87 | {
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88 | #ifdef __WIN__
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89 | IO_STATUS_BLOCK ioStatusBlock;
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90 |
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91 | KEVENT event;
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92 | KeInitializeEvent (&event, NotificationEvent, FALSE);
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93 |
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94 | PIRP irp = IoBuildDeviceIoControlRequest (u32Function,
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95 | pDriver->pDeviceObject,
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96 | pvData,
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97 | cbData,
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98 | pvData,
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99 | cbData,
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100 | FALSE,
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101 | &event,
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102 | &ioStatusBlock);
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103 | if (irp == NULL)
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104 | {
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105 | Log(("vbglDriverIOCtl: IoBuildDeviceIoControlRequest failed\n"));
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106 | return VERR_NO_MEMORY;
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107 | }
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108 |
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109 | NTSTATUS rc = IoCallDriver (pDriver->pDeviceObject, irp);
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110 |
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111 | if (!NT_SUCCESS(rc))
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112 | Log(("vbglDriverIOCtl: IoCallDriver failed with ntstatus=%x\n", rc));
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113 |
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114 | return NT_SUCCESS(rc)? VINF_SUCCESS: VERR_VBGL_IOCTL_FAILED;
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115 | #else
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116 | return vboxadd_cmc_call (pDriver->opaque, u32Function, pvData);
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117 | #endif
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118 | }
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119 |
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120 | void vbglDriverClose (VBGLDRIVER *pDriver)
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121 | {
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122 | #ifdef __WIN__
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123 | Log(("vbglDriverClose pDeviceObject=%x\n", pDriver->pDeviceObject));
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124 | ObDereferenceObject (pDriver->pFileObject);
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125 | #else
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126 | vboxadd_cmc_close (pDriver->opaque);
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127 | #endif
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128 | }
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129 |
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130 | #endif /* !VBGL_VBOXGUEST */
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