DrvHostDVD.cpp@ 81301

Last change on this file since 81301 was 80589, checked in by vboxsync, 5 years ago
Devices/Storage: Add two new parameters to PDMIMEDIAEX::pfnIoReqSendScsiCmd to return the amount ofsense data written and the determined transfer direction from parsed CDB, bugref:9440
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File size: 20.9 KB

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1	/* $Id: DrvHostDVD.cpp 80589 2019-09-04 18:20:28Z vboxsync $ */
2	/** @file
3	* DrvHostDVD - Host DVD block driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_HOST_DVD
23	#include <iprt/asm.h>
24	#include <VBox/vmm/pdmdrv.h>
25	#include <VBox/vmm/pdmstorageifs.h>
26	#include <iprt/asm.h>
27	#include <iprt/assert.h>
28	#include <iprt/file.h>
29	#include <iprt/string.h>
30	#include <iprt/thread.h>
31	#include <iprt/critsect.h>
32	#include <VBox/scsi.h>
33	#include <VBox/scsiinline.h>
34
35	#include "VBoxDD.h"
36	#include "DrvHostBase.h"
37	#include "ATAPIPassthrough.h"
38
39	/** ATAPI sense info size. */
40	#define ATAPI_SENSE_SIZE 64
41	/** Size of an ATAPI packet. */
42	#define ATAPI_PACKET_SIZE 12
43
44	/**
45	* Host DVD driver instance data.
46	*/
47	typedef struct DRVHOSTDVD
48	{
49	/** Base drivr data. */
50	DRVHOSTBASE Core;
51	/** The current tracklist of the loaded medium if passthrough is used. */
52	PTRACKLIST pTrackList;
53	/** ATAPI sense data. */
54	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
55	/** Flag whether to overwrite the inquiry data with our emulated settings. */
56	bool fInquiryOverwrite;
57	} DRVHOSTDVD;
58	/** Pointer to the host DVD driver instance data. */
59	typedef DRVHOSTDVD *PDRVHOSTDVD;
60
61
62	/*********************************************************************************************************************************
63	* Internal Functions *
64	*********************************************************************************************************************************/
65
66
67	static uint8_t drvHostDvdCmdOK(PDRVHOSTDVD pThis)
68	{
69	memset(pThis->abATAPISense, '\0', sizeof(pThis->abATAPISense));
70	pThis->abATAPISense[0] = 0x70;
71	pThis->abATAPISense[7] = 10;
72	return SCSI_STATUS_OK;
73	}
74
75	static uint8_t drvHostDvdCmdError(PDRVHOSTDVD pThis, const uint8_t *pabATAPISense, size_t cbATAPISense)
76	{
77	Log(("%s: sense=%#x (%s) asc=%#x ascq=%#x (%s)\n", __FUNCTION__, pabATAPISense[2] & 0x0f, SCSISenseText(pabATAPISense[2] & 0x0f),
78	pabATAPISense[12], pabATAPISense[13], SCSISenseExtText(pabATAPISense[12], pabATAPISense[13])));
79	memset(pThis->abATAPISense, '\0', sizeof(pThis->abATAPISense));
80	memcpy(pThis->abATAPISense, pabATAPISense, RT_MIN(cbATAPISense, sizeof(pThis->abATAPISense)));
81	return SCSI_STATUS_CHECK_CONDITION;
82	}
83
84	/** @todo deprecated function - doesn't provide enough info. Replace by direct
85	* calls to drvHostDvdCmdError() with full data. */
86	static uint8_t drvHostDvdCmdErrorSimple(PDRVHOSTDVD pThis, uint8_t uATAPISenseKey, uint8_t uATAPIASC)
87	{
88	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
89	memset(abATAPISense, '\0', sizeof(abATAPISense));
90	abATAPISense[0] = 0x70 \| (1 << 7);
91	abATAPISense[2] = uATAPISenseKey & 0x0f;
92	abATAPISense[7] = 10;
93	abATAPISense[12] = uATAPIASC;
94	return drvHostDvdCmdError(pThis, abATAPISense, sizeof(abATAPISense));
95	}
96
97
98	/**
99	* Parse the CDB and check whether it can be passed through safely.
100	*
101	* @returns Flag whether to passthrough to the device is considered safe.
102	* @param pThis The host DVD driver instance.
103	* @param pReq The request.
104	* @param pbCdb The CDB to parse.
105	* @param cbCdb Size of the CDB in bytes.
106	* @param cbBuf Size of the guest buffer.
107	* @param penmTxDir Where to store the transfer direction (guest to host or vice versa).
108	* @param pcbXfer Where to store the transfer size encoded in the CDB.
109	* @param pcbSector Where to store the sector size used for the transfer.
110	* @param pu8ScsiSts Where to store the SCSI status code.
111	*/
112	static bool drvHostDvdParseCdb(PDRVHOSTDVD pThis, PDRVHOSTBASEREQ pReq,
113	const uint8_t *pbCdb, size_t cbCdb, size_t cbBuf,
114	PDMMEDIATXDIR penmTxDir, size_t pcbXfer,
115	size_t pcbSector, uint8_t pu8ScsiSts)
116	{
117	bool fPassthrough = false;
118
119	if ( pbCdb[0] == SCSI_REQUEST_SENSE
120	&& (pThis->abATAPISense[2] & 0x0f) != SCSI_SENSE_NONE)
121	{
122	/* Handle the command here and copy sense data over. */
123	void *pvBuf = NULL;
124	int rc = drvHostBaseBufferRetain(&pThis->Core, pReq, cbBuf, false /fWrite/, &pvBuf);
125	if (RT_SUCCESS(rc))
126	{
127	memcpy(pvBuf, &pThis->abATAPISense[0], RT_MIN(sizeof(pThis->abATAPISense), cbBuf));
128	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbBuf, false /* fWrite */, pvBuf);
129	AssertRC(rc);
130	drvHostDvdCmdOK(pThis);
131	*pu8ScsiSts = SCSI_STATUS_OK;
132	}
133	}
134	else
135	fPassthrough = ATAPIPassthroughParseCdb(pbCdb, cbCdb, cbBuf, pThis->pTrackList,
136	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense),
137	penmTxDir, pcbXfer, pcbSector, pu8ScsiSts);
138
139	return fPassthrough;
140	}
141
142
143	/**
144	* Locks or unlocks the drive.
145	*
146	* @returns VBox status code.
147	* @param pThis The instance data.
148	* @param fLock True if the request is to lock the drive, false if to unlock.
149	*/
150	static DECLCALLBACK(int) drvHostDvdDoLock(PDRVHOSTBASE pThis, bool fLock)
151	{
152	int rc = drvHostBaseDoLockOs(pThis, fLock);
153
154	LogFlow(("drvHostDvdDoLock(, fLock=%RTbool): returns %Rrc\n", fLock, rc));
155	return rc;
156	}
157
158
159	/** @interface_method_impl{PDMIMEDIA,pfnSendCmd} */
160	static DECLCALLBACK(int) drvHostDvdSendCmd(PPDMIMEDIA pInterface, const uint8_t *pbCdb, size_t cbCdb,
161	PDMMEDIATXDIR enmTxDir, void pvBuf, uint32_t pcbBuf,
162	uint8_t *pabSense, size_t cbSense, uint32_t cTimeoutMillies)
163	{
164	PDRVHOSTBASE pThis = RT_FROM_MEMBER(pInterface, DRVHOSTBASE, IMedia);
165	int rc;
166	LogFlow(("%s: cmd[0]=%#04x txdir=%d pcbBuf=%d timeout=%d\n", __FUNCTION__, pbCdb[0], enmTxDir, *pcbBuf, cTimeoutMillies));
167
168	RTCritSectEnter(&pThis->CritSect);
169	/* Pass the request on to the internal scsi command interface. */
170	if (enmTxDir == PDMMEDIATXDIR_FROM_DEVICE)
171	memset(pvBuf, '\0', pcbBuf); / we got read size, but zero it anyway. */
172	rc = drvHostBaseScsiCmdOs(pThis, pbCdb, cbCdb, enmTxDir, pvBuf, pcbBuf, pabSense, cbSense, cTimeoutMillies);
173	if (rc == VERR_UNRESOLVED_ERROR)
174	/* sense information set */
175	rc = VERR_DEV_IO_ERROR;
176
177	if (pbCdb[0] == SCSI_GET_EVENT_STATUS_NOTIFICATION)
178	{
179	uint8_t pbBuf = (uint8_t)pvBuf;
180	Log2(("Event Status Notification class=%#02x supported classes=%#02x\n", pbBuf[2], pbBuf[3]));
181	if (RT_BE2H_U16((uint16_t)pbBuf) >= 6)
182	Log2((" event %#02x %#02x %#02x %#02x\n", pbBuf[4], pbBuf[5], pbBuf[6], pbBuf[7]));
183	}
184	RTCritSectLeave(&pThis->CritSect);
185
186	LogFlow(("%s: rc=%Rrc\n", __FUNCTION__, rc));
187	return rc;
188	}
189
190
191	/** @interface_method_impl{PDMIMEDIAEX,pfnIoReqSendScsiCmd} */
192	static DECLCALLBACK(int) drvHostDvdIoReqSendScsiCmd(PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq,
193	uint32_t uLun, const uint8_t *pbCdb, size_t cbCdb,
194	PDMMEDIAEXIOREQSCSITXDIR enmTxDir, PDMMEDIAEXIOREQSCSITXDIR *penmTxDirRet,
195	size_t cbBuf, uint8_t pabSense, size_t cbSense, size_t pcbSenseRet,
196	uint8_t *pu8ScsiSts, uint32_t cTimeoutMillies)
197	{
198	RT_NOREF3(uLun, cTimeoutMillies, enmTxDir);
199
200	PDRVHOSTDVD pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDVD, Core.IMediaEx);
201	PDRVHOSTBASEREQ pReq = (PDRVHOSTBASEREQ)hIoReq;
202	int rc = VINF_SUCCESS;
203
204	LogFlow(("%s: pbCdb[0]=%#04x{%s} enmTxDir=%d cbBuf=%zu timeout=%u\n",
205	__FUNCTION__, pbCdb[0], SCSICmdText(pbCdb[0]), enmTxDir, cbBuf, cTimeoutMillies));
206
207	RTCritSectEnter(&pThis->Core.CritSect);
208
209	/*
210	* Parse the command first to fend off any illegal or dangerous commands we don't want the guest
211	* to execute on the host drive.
212	*/
213	PDMMEDIATXDIR enmXferDir = PDMMEDIATXDIR_NONE;
214	size_t cbXfer = 0;
215	size_t cbSector = 0;
216	size_t cbScsiCmdBufLimit = drvHostBaseScsiCmdGetBufLimitOs(&pThis->Core);
217	bool fPassthrough = drvHostDvdParseCdb(pThis, pReq, pbCdb, cbCdb, cbBuf,
218	&enmXferDir, &cbXfer, &cbSector, pu8ScsiSts);
219	if (fPassthrough)
220	{
221	void *pvBuf = NULL;
222	size_t cbXferCur = cbXfer;
223
224	pReq->cbReq = cbXfer;
225	pReq->cbResidual = cbXfer;
226
227	if (cbXfer)
228	rc = drvHostBaseBufferRetain(&pThis->Core, pReq, cbXfer, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, &pvBuf);
229
230	if (cbXfer > cbScsiCmdBufLimit)
231	{
232	/* Linux accepts commands with up to 100KB of data, but expects
233	* us to handle commands with up to 128KB of data. The usual
234	* imbalance of powers. */
235	uint8_t aATAPICmd[ATAPI_PACKET_SIZE];
236	uint32_t iATAPILBA, cSectors;
237	uint8_t pbBuf = (uint8_t )pvBuf;
238
239	switch (pbCdb[0])
240	{
241	case SCSI_READ_10:
242	case SCSI_WRITE_10:
243	case SCSI_WRITE_AND_VERIFY_10:
244	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
245	cSectors = scsiBE2H_U16(pbCdb + 7);
246	break;
247	case SCSI_READ_12:
248	case SCSI_WRITE_12:
249	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
250	cSectors = scsiBE2H_U32(pbCdb + 6);
251	break;
252	case SCSI_READ_CD:
253	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
254	cSectors = scsiBE2H_U24(pbCdb + 6);
255	break;
256	case SCSI_READ_CD_MSF:
257	iATAPILBA = scsiMSF2LBA(pbCdb + 3);
258	cSectors = scsiMSF2LBA(pbCdb + 6) - iATAPILBA;
259	break;
260	default:
261	AssertMsgFailed(("Don't know how to split command %#04x\n", pbCdb[0]));
262	LogRelMax(10, ("HostDVD#%u: CD-ROM passthrough split error\n", pThis->Core.pDrvIns->iInstance));
263	*pu8ScsiSts = drvHostDvdCmdErrorSimple(pThis, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
264	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbBuf, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, pvBuf);
265	RTCritSectLeave(&pThis->Core.CritSect);
266	return VINF_SUCCESS;
267	}
268	memcpy(aATAPICmd, pbCdb, RT_MIN(cbCdb, ATAPI_PACKET_SIZE));
269	uint32_t cReqSectors = 0;
270	for (uint32_t i = cSectors; i > 0; i -= cReqSectors)
271	{
272	if (i * cbSector > cbScsiCmdBufLimit)
273	cReqSectors = (uint32_t)(cbScsiCmdBufLimit / cbSector);
274	else
275	cReqSectors = i;
276	uint32_t cbCurrTX = (uint32_t)cbSector * cReqSectors;
277	switch (pbCdb[0])
278	{
279	case SCSI_READ_10:
280	case SCSI_WRITE_10:
281	case SCSI_WRITE_AND_VERIFY_10:
282	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
283	scsiH2BE_U16(aATAPICmd + 7, cReqSectors);
284	break;
285	case SCSI_READ_12:
286	case SCSI_WRITE_12:
287	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
288	scsiH2BE_U32(aATAPICmd + 6, cReqSectors);
289	break;
290	case SCSI_READ_CD:
291	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
292	scsiH2BE_U24(aATAPICmd + 6, cReqSectors);
293	break;
294	case SCSI_READ_CD_MSF:
295	scsiLBA2MSF(aATAPICmd + 3, iATAPILBA);
296	scsiLBA2MSF(aATAPICmd + 6, iATAPILBA + cReqSectors);
297	break;
298	}
299	rc = drvHostBaseScsiCmdOs(&pThis->Core, aATAPICmd, sizeof(aATAPICmd),
300	enmXferDir, pbBuf, &cbCurrTX,
301	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense),
302	cTimeoutMillies /*< @todo timeout /);
303	if (rc != VINF_SUCCESS)
304	break;
305
306	pReq->cbResidual -= cbCurrTX;
307	iATAPILBA += cReqSectors;
308	pbBuf += cbSector * cReqSectors;
309	}
310	}
311	else
312	{
313	uint32_t cbXferTmp = (uint32_t)cbXferCur;
314	rc = drvHostBaseScsiCmdOs(&pThis->Core, pbCdb, cbCdb, enmXferDir, pvBuf, &cbXferTmp,
315	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense), cTimeoutMillies);
316	if (RT_SUCCESS(rc))
317	pReq->cbResidual -= cbXferTmp;
318	}
319
320	if (RT_SUCCESS(rc))
321	{
322	/* Do post processing for certain commands. */
323	switch (pbCdb[0])
324	{
325	case SCSI_SEND_CUE_SHEET:
326	case SCSI_READ_TOC_PMA_ATIP:
327	{
328	if (!pThis->pTrackList)
329	rc = ATAPIPassthroughTrackListCreateEmpty(&pThis->pTrackList);
330
331	if (RT_SUCCESS(rc))
332	rc = ATAPIPassthroughTrackListUpdate(pThis->pTrackList, pbCdb, pvBuf);
333
334	if (RT_FAILURE(rc))
335	LogRelMax(10, ("HostDVD#%u: Error (%Rrc) while updating the tracklist during %s, burning the disc might fail\n",
336	pThis->Core.pDrvIns->iInstance, rc,
337	pbCdb[0] == SCSI_SEND_CUE_SHEET ? "SEND CUE SHEET" : "READ TOC/PMA/ATIP"));
338	break;
339	}
340	case SCSI_SYNCHRONIZE_CACHE:
341	{
342	if (pThis->pTrackList)
343	ATAPIPassthroughTrackListClear(pThis->pTrackList);
344	break;
345	}
346	}
347
348	if (enmXferDir == PDMMEDIATXDIR_FROM_DEVICE)
349	{
350	Assert(cbXferCur <= cbXfer);
351
352	if ( pbCdb[0] == SCSI_INQUIRY
353	&& pThis->fInquiryOverwrite)
354	{
355	const char *pszInqVendorId = "VBOX";
356	const char *pszInqProductId = "CD-ROM";
357	const char *pszInqRevision = "1.0";
358
359	if (pThis->Core.pDrvMediaPort->pfnQueryScsiInqStrings)
360	{
361	rc = pThis->Core.pDrvMediaPort->pfnQueryScsiInqStrings(pThis->Core.pDrvMediaPort, &pszInqVendorId,
362	&pszInqProductId, &pszInqRevision);
363	AssertRC(rc);
364	}
365	/* Make sure that the real drive cannot be identified.
366	* Motivation: changing the VM configuration should be as
367	* invisible as possible to the guest. */
368	if (cbXferCur >= 8 + 8)
369	scsiPadStr((uint8_t *)pvBuf + 8, pszInqVendorId, 8);
370	if (cbXferCur >= 16 + 16)
371	scsiPadStr((uint8_t *)pvBuf + 16, pszInqProductId, 16);
372	if (cbXferCur >= 32 + 4)
373	scsiPadStr((uint8_t *)pvBuf + 32, pszInqRevision, 4);
374	}
375
376	if (cbXferCur)
377	Log3(("ATAPI PT data read (%d): %.Rhxs\n", cbXferCur, cbXferCur, (uint8_t )pvBuf));
378	}
379
380	*pu8ScsiSts = drvHostDvdCmdOK(pThis);
381	}
382	else
383	{
384	do
385	{
386	/* don't log superfluous errors */
387	if ( rc == VERR_DEV_IO_ERROR
388	&& ( pbCdb[0] == SCSI_TEST_UNIT_READY
389	\|\| pbCdb[0] == SCSI_READ_CAPACITY
390	\|\| pbCdb[0] == SCSI_READ_DVD_STRUCTURE
391	\|\| pbCdb[0] == SCSI_READ_TOC_PMA_ATIP))
392	break;
393	LogRelMax(10, ("HostDVD#%u: CD-ROM passthrough cmd=%#04x sense=%d ASC=%#02x ASCQ=%#02x %Rrc\n",
394	pThis->Core.pDrvIns->iInstance, pbCdb[0], pThis->abATAPISense[2] & 0x0f,
395	pThis->abATAPISense[12], pThis->abATAPISense[13], rc));
396	} while (0);
397	*pu8ScsiSts = SCSI_STATUS_CHECK_CONDITION;
398	rc = VINF_SUCCESS;
399	}
400
401	if (cbXfer)
402	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbXfer, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, pvBuf);
403	}
404
405	/*
406	* We handled the command, check the status code and copy over the sense data if
407	* it is CHECK CONDITION.
408	*/
409	if ( *pu8ScsiSts == SCSI_STATUS_CHECK_CONDITION
410	&& VALID_PTR(pabSense)
411	&& cbSense > 0)
412	{
413	size_t cbSenseCpy = RT_MIN(cbSense, sizeof(pThis->abATAPISense));
414
415	memcpy(pabSense, &pThis->abATAPISense[0], cbSenseCpy);
416	if (pcbSenseRet)
417	*pcbSenseRet = cbSenseCpy;
418	}
419
420	if (penmTxDirRet)
421	{
422	switch (enmXferDir)
423	{
424	case PDMMEDIATXDIR_NONE:
425	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_NONE;
426	break;
427	case PDMMEDIATXDIR_FROM_DEVICE:
428	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_FROM_DEVICE;
429	break;
430	case PDMMEDIATXDIR_TO_DEVICE:
431	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_TO_DEVICE;
432	break;
433	default:
434	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_UNKNOWN;
435	}
436	}
437
438	RTCritSectLeave(&pThis->Core.CritSect);
439
440	LogFlow(("%s: rc=%Rrc\n", __FUNCTION__, rc));
441	return rc;
442	}
443
444
445	/* -=-=-=-=- driver interface -=-=-=-=- */
446
447
448	/** @interface_method_impl{PDMDRVREG,pfnDestruct} */
449	static DECLCALLBACK(void) drvHostDvdDestruct(PPDMDRVINS pDrvIns)
450	{
451	PDRVHOSTDVD pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDVD);
452
453	if (pThis->pTrackList)
454	{
455	ATAPIPassthroughTrackListDestroy(pThis->pTrackList);
456	pThis->pTrackList = NULL;
457	}
458
459	DRVHostBaseDestruct(pDrvIns);
460	}
461
462	/**
463	* Construct a host dvd drive driver instance.
464	*
465	* @copydoc FNPDMDRVCONSTRUCT
466	*/
467	static DECLCALLBACK(int) drvHostDvdConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
468	{
469	RT_NOREF(fFlags);
470	PDRVHOSTDVD pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDVD);
471	LogFlow(("drvHostDvdConstruct: iInstance=%d\n", pDrvIns->iInstance));
472
473	int rc = CFGMR3QueryBoolDef(pCfg, "InquiryOverwrite", &pThis->fInquiryOverwrite, true);
474	if (RT_FAILURE(rc))
475	return PDMDRV_SET_ERROR(pDrvIns, rc,
476	N_("HostDVD configuration error: failed to read \"InquiryOverwrite\" as boolean"));
477
478	bool fPassthrough;
479	rc = CFGMR3QueryBool(pCfg, "Passthrough", &fPassthrough);
480	if (RT_SUCCESS(rc) && fPassthrough)
481	{
482	pThis->Core.IMedia.pfnSendCmd = drvHostDvdSendCmd;
483	pThis->Core.IMediaEx.pfnIoReqSendScsiCmd = drvHostDvdIoReqSendScsiCmd;
484	/* Passthrough requires opening the device in R/W mode. */
485	pThis->Core.fReadOnlyConfig = false;
486	}
487
488	pThis->Core.pfnDoLock = drvHostDvdDoLock;
489
490	/*
491	* Init instance data.
492	*/
493	rc = DRVHostBaseInit(pDrvIns, pCfg, "Path\0Interval\0Locked\0BIOSVisible\0AttachFailError\0Passthrough\0InquiryOverwrite\0",
494	PDMMEDIATYPE_DVD);
495	LogFlow(("drvHostDvdConstruct: returns %Rrc\n", rc));
496	return rc;
497	}
498
499
500	/**
501	* Block driver registration record.
502	*/
503	const PDMDRVREG g_DrvHostDVD =
504	{
505	/* u32Version */
506	PDM_DRVREG_VERSION,
507	/* szName */
508	"HostDVD",
509	/* szRCMod */
510	"",
511	/* szR0Mod */
512	"",
513	/* pszDescription */
514	"Host DVD Block Driver.",
515	/* fFlags */
516	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
517	/* fClass. */
518	PDM_DRVREG_CLASS_BLOCK,
519	/* cMaxInstances */
520	~0U,
521	/* cbInstance */
522	sizeof(DRVHOSTDVD),
523	/* pfnConstruct */
524	drvHostDvdConstruct,
525	/* pfnDestruct */
526	drvHostDvdDestruct,
527	/* pfnRelocate */
528	NULL,
529	/* pfnIOCtl */
530	NULL,
531	/* pfnPowerOn */
532	NULL,
533	/* pfnReset */
534	NULL,
535	/* pfnSuspend */
536	NULL,
537	/* pfnResume */
538	NULL,
539	/* pfnAttach */
540	NULL,
541	/* pfnDetach */
542	NULL,
543	/* pfnPowerOff */
544	NULL,
545	/* pfnSoftReset */
546	NULL,
547	/* u32EndVersion */
548	PDM_DRVREG_VERSION
549	};
550

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostDVD.cpp@ 81301

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