DrvHostDVD.cpp@ 106877

Last change on this file since 106877 was 106061, checked in by vboxsync, 3 months ago
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1	/* $Id: DrvHostDVD.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* DrvHostDVD - Host DVD block driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DRV_HOST_DVD
33	#include <iprt/asm.h>
34	#include <VBox/vmm/pdmdrv.h>
35	#include <VBox/vmm/pdmstorageifs.h>
36	#include <iprt/asm.h>
37	#include <iprt/assert.h>
38	#include <iprt/file.h>
39	#include <iprt/string.h>
40	#include <iprt/thread.h>
41	#include <iprt/critsect.h>
42	#include <VBox/scsi.h>
43	#include <VBox/scsiinline.h>
44
45	#include "VBoxDD.h"
46	#include "DrvHostBase.h"
47	#include "ATAPIPassthrough.h"
48
49	/** ATAPI sense info size. */
50	#define ATAPI_SENSE_SIZE 64
51	/** Size of an ATAPI packet. */
52	#define ATAPI_PACKET_SIZE 12
53
54	/**
55	* Host DVD driver instance data.
56	*/
57	typedef struct DRVHOSTDVD
58	{
59	/** Base driver data. */
60	DRVHOSTBASE Core;
61	/** The current tracklist of the loaded medium if passthrough is used. */
62	PTRACKLIST pTrackList;
63	/** ATAPI sense data. */
64	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
65	/** Flag whether to overwrite the inquiry data with our emulated settings. */
66	bool fInquiryOverwrite;
67	} DRVHOSTDVD;
68	/** Pointer to the host DVD driver instance data. */
69	typedef DRVHOSTDVD *PDRVHOSTDVD;
70
71
72	/*********************************************************************************************************************************
73	* Internal Functions *
74	*********************************************************************************************************************************/
75
76
77	static uint8_t drvHostDvdCmdOK(PDRVHOSTDVD pThis)
78	{
79	memset(pThis->abATAPISense, '\0', sizeof(pThis->abATAPISense));
80	pThis->abATAPISense[0] = 0x70;
81	pThis->abATAPISense[7] = 10;
82	return SCSI_STATUS_OK;
83	}
84
85	static uint8_t drvHostDvdCmdError(PDRVHOSTDVD pThis, const uint8_t *pabATAPISense, size_t cbATAPISense)
86	{
87	Log(("%s: sense=%#x (%s) asc=%#x ascq=%#x (%s)\n", __FUNCTION__, pabATAPISense[2] & 0x0f, SCSISenseText(pabATAPISense[2] & 0x0f),
88	pabATAPISense[12], pabATAPISense[13], SCSISenseExtText(pabATAPISense[12], pabATAPISense[13])));
89	memset(pThis->abATAPISense, '\0', sizeof(pThis->abATAPISense));
90	memcpy(pThis->abATAPISense, pabATAPISense, RT_MIN(cbATAPISense, sizeof(pThis->abATAPISense)));
91	return SCSI_STATUS_CHECK_CONDITION;
92	}
93
94	/** @todo deprecated function - doesn't provide enough info. Replace by direct
95	* calls to drvHostDvdCmdError() with full data. */
96	static uint8_t drvHostDvdCmdErrorSimple(PDRVHOSTDVD pThis, uint8_t uATAPISenseKey, uint8_t uATAPIASC)
97	{
98	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
99	memset(abATAPISense, '\0', sizeof(abATAPISense));
100	abATAPISense[0] = 0x70 \| (1 << 7);
101	abATAPISense[2] = uATAPISenseKey & 0x0f;
102	abATAPISense[7] = 10;
103	abATAPISense[12] = uATAPIASC;
104	return drvHostDvdCmdError(pThis, abATAPISense, sizeof(abATAPISense));
105	}
106
107
108	/**
109	* Parse the CDB and check whether it can be passed through safely.
110	*
111	* @returns Flag whether to passthrough to the device is considered safe.
112	* @param pThis The host DVD driver instance.
113	* @param pReq The request.
114	* @param pbCdb The CDB to parse.
115	* @param cbCdb Size of the CDB in bytes.
116	* @param cbBuf Size of the guest buffer.
117	* @param penmTxDir Where to store the transfer direction (guest to host or vice versa).
118	* @param pcbXfer Where to store the transfer size encoded in the CDB.
119	* @param pcbSector Where to store the sector size used for the transfer.
120	* @param pu8ScsiSts Where to store the SCSI status code.
121	*/
122	static bool drvHostDvdParseCdb(PDRVHOSTDVD pThis, PDRVHOSTBASEREQ pReq,
123	const uint8_t *pbCdb, size_t cbCdb, size_t cbBuf,
124	PDMMEDIATXDIR penmTxDir, size_t pcbXfer,
125	size_t pcbSector, uint8_t pu8ScsiSts)
126	{
127	bool fPassthrough = false;
128
129	if ( pbCdb[0] == SCSI_REQUEST_SENSE
130	&& (pThis->abATAPISense[2] & 0x0f) != SCSI_SENSE_NONE)
131	{
132	/* Handle the command here and copy sense data over. */
133	void *pvBuf = NULL;
134	int rc = drvHostBaseBufferRetain(&pThis->Core, pReq, cbBuf, false /fWrite/, &pvBuf);
135	if (RT_SUCCESS(rc))
136	{
137	memcpy(pvBuf, &pThis->abATAPISense[0], RT_MIN(sizeof(pThis->abATAPISense), cbBuf));
138	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbBuf, false /* fWrite */, pvBuf);
139	AssertRC(rc);
140	drvHostDvdCmdOK(pThis);
141	*pu8ScsiSts = SCSI_STATUS_OK;
142	}
143	}
144	else
145	fPassthrough = ATAPIPassthroughParseCdb(pbCdb, cbCdb, cbBuf, pThis->pTrackList,
146	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense),
147	penmTxDir, pcbXfer, pcbSector, pu8ScsiSts);
148
149	return fPassthrough;
150	}
151
152
153	/**
154	* Locks or unlocks the drive.
155	*
156	* @returns VBox status code.
157	* @param pThis The instance data.
158	* @param fLock True if the request is to lock the drive, false if to unlock.
159	*/
160	static DECLCALLBACK(int) drvHostDvdDoLock(PDRVHOSTBASE pThis, bool fLock)
161	{
162	int rc = drvHostBaseDoLockOs(pThis, fLock);
163
164	LogFlow(("drvHostDvdDoLock(, fLock=%RTbool): returns %Rrc\n", fLock, rc));
165	return rc;
166	}
167
168
169	/** @interface_method_impl{PDMIMEDIA,pfnSendCmd} */
170	static DECLCALLBACK(int) drvHostDvdSendCmd(PPDMIMEDIA pInterface, const uint8_t *pbCdb, size_t cbCdb,
171	PDMMEDIATXDIR enmTxDir, void pvBuf, uint32_t pcbBuf,
172	uint8_t *pabSense, size_t cbSense, uint32_t cTimeoutMillies)
173	{
174	PDRVHOSTBASE pThis = RT_FROM_MEMBER(pInterface, DRVHOSTBASE, IMedia);
175	int rc;
176	LogFlow(("%s: cmd[0]=%#04x txdir=%d pcbBuf=%d timeout=%d\n", __FUNCTION__, pbCdb[0], enmTxDir, *pcbBuf, cTimeoutMillies));
177
178	RTCritSectEnter(&pThis->CritSect);
179	/* Pass the request on to the internal scsi command interface. */
180	if (enmTxDir == PDMMEDIATXDIR_FROM_DEVICE)
181	memset(pvBuf, '\0', pcbBuf); / we got read size, but zero it anyway. */
182	rc = drvHostBaseScsiCmdOs(pThis, pbCdb, cbCdb, enmTxDir, pvBuf, pcbBuf, pabSense, cbSense, cTimeoutMillies);
183	if (rc == VERR_UNRESOLVED_ERROR)
184	/* sense information set */
185	rc = VERR_DEV_IO_ERROR;
186
187	if (pbCdb[0] == SCSI_GET_EVENT_STATUS_NOTIFICATION)
188	{
189	uint8_t pbBuf = (uint8_t)pvBuf;
190	Log2(("Event Status Notification class=%#02x supported classes=%#02x\n", pbBuf[2], pbBuf[3]));
191	if (RT_BE2H_U16((uint16_t)pbBuf) >= 6)
192	Log2((" event %#02x %#02x %#02x %#02x\n", pbBuf[4], pbBuf[5], pbBuf[6], pbBuf[7]));
193	}
194	RTCritSectLeave(&pThis->CritSect);
195
196	LogFlow(("%s: rc=%Rrc\n", __FUNCTION__, rc));
197	return rc;
198	}
199
200
201	/** @interface_method_impl{PDMIMEDIAEX,pfnIoReqSendScsiCmd} */
202	static DECLCALLBACK(int) drvHostDvdIoReqSendScsiCmd(PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq,
203	uint32_t uLun, const uint8_t *pbCdb, size_t cbCdb,
204	PDMMEDIAEXIOREQSCSITXDIR enmTxDir, PDMMEDIAEXIOREQSCSITXDIR *penmTxDirRet,
205	size_t cbBuf, uint8_t pabSense, size_t cbSense, size_t pcbSenseRet,
206	uint8_t *pu8ScsiSts, uint32_t cTimeoutMillies)
207	{
208	RT_NOREF3(uLun, cTimeoutMillies, enmTxDir);
209
210	PDRVHOSTDVD pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDVD, Core.IMediaEx);
211	PDRVHOSTBASEREQ pReq = (PDRVHOSTBASEREQ)hIoReq;
212	int rc = VINF_SUCCESS;
213
214	LogFlow(("%s: pbCdb[0]=%#04x{%s} enmTxDir=%d cbBuf=%zu timeout=%u\n",
215	__FUNCTION__, pbCdb[0], SCSICmdText(pbCdb[0]), enmTxDir, cbBuf, cTimeoutMillies));
216
217	RTCritSectEnter(&pThis->Core.CritSect);
218
219	/*
220	* Parse the command first to fend off any illegal or dangerous commands we don't want the guest
221	* to execute on the host drive.
222	*/
223	PDMMEDIATXDIR enmXferDir = PDMMEDIATXDIR_NONE;
224	size_t cbXfer = 0;
225	size_t cbSector = 0;
226	size_t cbScsiCmdBufLimit = drvHostBaseScsiCmdGetBufLimitOs(&pThis->Core);
227	bool fPassthrough = drvHostDvdParseCdb(pThis, pReq, pbCdb, cbCdb, cbBuf,
228	&enmXferDir, &cbXfer, &cbSector, pu8ScsiSts);
229	if (fPassthrough)
230	{
231	void *pvBuf = NULL;
232	size_t cbXferCur = cbXfer;
233
234	pReq->cbReq = cbXfer;
235	pReq->cbResidual = cbXfer;
236
237	if (cbXfer)
238	rc = drvHostBaseBufferRetain(&pThis->Core, pReq, cbXfer, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, &pvBuf);
239
240	if (cbXfer > cbScsiCmdBufLimit)
241	{
242	/* Linux accepts commands with up to 100KB of data, but expects
243	* us to handle commands with up to 128KB of data. The usual
244	* imbalance of powers. */
245	uint8_t aATAPICmd[ATAPI_PACKET_SIZE];
246	uint32_t iATAPILBA, cSectors;
247	uint8_t pbBuf = (uint8_t )pvBuf;
248
249	switch (pbCdb[0])
250	{
251	case SCSI_READ_10:
252	case SCSI_WRITE_10:
253	case SCSI_WRITE_AND_VERIFY_10:
254	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
255	cSectors = scsiBE2H_U16(pbCdb + 7);
256	break;
257	case SCSI_READ_12:
258	case SCSI_WRITE_12:
259	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
260	cSectors = scsiBE2H_U32(pbCdb + 6);
261	break;
262	case SCSI_READ_CD:
263	iATAPILBA = scsiBE2H_U32(pbCdb + 2);
264	cSectors = scsiBE2H_U24(pbCdb + 6);
265	break;
266	case SCSI_READ_CD_MSF:
267	iATAPILBA = scsiMSF2LBA(pbCdb + 3);
268	cSectors = scsiMSF2LBA(pbCdb + 6) - iATAPILBA;
269	break;
270	default:
271	AssertMsgFailed(("Don't know how to split command %#04x\n", pbCdb[0]));
272	LogRelMax(10, ("HostDVD#%u: CD-ROM passthrough split error\n", pThis->Core.pDrvIns->iInstance));
273	*pu8ScsiSts = drvHostDvdCmdErrorSimple(pThis, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
274	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbBuf, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, pvBuf);
275	RTCritSectLeave(&pThis->Core.CritSect);
276	return VINF_SUCCESS;
277	}
278	memcpy(aATAPICmd, pbCdb, RT_MIN(cbCdb, ATAPI_PACKET_SIZE));
279	uint32_t cReqSectors = 0;
280	for (uint32_t i = cSectors; i > 0; i -= cReqSectors)
281	{
282	if (i * cbSector > cbScsiCmdBufLimit)
283	cReqSectors = (uint32_t)(cbScsiCmdBufLimit / cbSector);
284	else
285	cReqSectors = i;
286	uint32_t cbCurrTX = (uint32_t)cbSector * cReqSectors;
287	switch (pbCdb[0])
288	{
289	case SCSI_READ_10:
290	case SCSI_WRITE_10:
291	case SCSI_WRITE_AND_VERIFY_10:
292	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
293	scsiH2BE_U16(aATAPICmd + 7, cReqSectors);
294	break;
295	case SCSI_READ_12:
296	case SCSI_WRITE_12:
297	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
298	scsiH2BE_U32(aATAPICmd + 6, cReqSectors);
299	break;
300	case SCSI_READ_CD:
301	scsiH2BE_U32(aATAPICmd + 2, iATAPILBA);
302	scsiH2BE_U24(aATAPICmd + 6, cReqSectors);
303	break;
304	case SCSI_READ_CD_MSF:
305	scsiLBA2MSF(aATAPICmd + 3, iATAPILBA);
306	scsiLBA2MSF(aATAPICmd + 6, iATAPILBA + cReqSectors);
307	break;
308	}
309	rc = drvHostBaseScsiCmdOs(&pThis->Core, aATAPICmd, sizeof(aATAPICmd),
310	enmXferDir, pbBuf, &cbCurrTX,
311	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense),
312	cTimeoutMillies /*< @todo timeout /);
313	if (rc != VINF_SUCCESS)
314	break;
315
316	pReq->cbResidual -= cbCurrTX;
317	iATAPILBA += cReqSectors;
318	pbBuf += cbSector * cReqSectors;
319	}
320	}
321	else
322	{
323	uint32_t cbXferTmp = (uint32_t)cbXferCur;
324	rc = drvHostBaseScsiCmdOs(&pThis->Core, pbCdb, cbCdb, enmXferDir, pvBuf, &cbXferTmp,
325	&pThis->abATAPISense[0], sizeof(pThis->abATAPISense), cTimeoutMillies);
326	if (RT_SUCCESS(rc))
327	pReq->cbResidual -= cbXferTmp;
328	}
329
330	if (RT_SUCCESS(rc))
331	{
332	/* Do post processing for certain commands. */
333	switch (pbCdb[0])
334	{
335	case SCSI_SEND_CUE_SHEET:
336	case SCSI_READ_TOC_PMA_ATIP:
337	{
338	if (!pThis->pTrackList)
339	rc = ATAPIPassthroughTrackListCreateEmpty(&pThis->pTrackList);
340
341	if (RT_SUCCESS(rc))
342	rc = ATAPIPassthroughTrackListUpdate(pThis->pTrackList, pbCdb, pvBuf, cbXfer);
343
344	if (RT_FAILURE(rc))
345	LogRelMax(10, ("HostDVD#%u: Error (%Rrc) while updating the tracklist during %s, burning the disc might fail\n",
346	pThis->Core.pDrvIns->iInstance, rc,
347	pbCdb[0] == SCSI_SEND_CUE_SHEET ? "SEND CUE SHEET" : "READ TOC/PMA/ATIP"));
348	break;
349	}
350	case SCSI_SYNCHRONIZE_CACHE:
351	{
352	if (pThis->pTrackList)
353	ATAPIPassthroughTrackListClear(pThis->pTrackList);
354	break;
355	}
356	}
357
358	if (enmXferDir == PDMMEDIATXDIR_FROM_DEVICE)
359	{
360	Assert(cbXferCur <= cbXfer);
361
362	if ( pbCdb[0] == SCSI_INQUIRY
363	&& pThis->fInquiryOverwrite)
364	{
365	const char *pszInqVendorId = "VBOX";
366	const char *pszInqProductId = "CD-ROM";
367	const char *pszInqRevision = "1.0";
368
369	if (pThis->Core.pDrvMediaPort->pfnQueryScsiInqStrings)
370	{
371	rc = pThis->Core.pDrvMediaPort->pfnQueryScsiInqStrings(pThis->Core.pDrvMediaPort, &pszInqVendorId,
372	&pszInqProductId, &pszInqRevision);
373	AssertRC(rc);
374	}
375	/* Make sure that the real drive cannot be identified.
376	* Motivation: changing the VM configuration should be as
377	* invisible as possible to the guest. */
378	if (cbXferCur >= 8 + 8)
379	scsiPadStr((uint8_t *)pvBuf + 8, pszInqVendorId, 8);
380	if (cbXferCur >= 16 + 16)
381	scsiPadStr((uint8_t *)pvBuf + 16, pszInqProductId, 16);
382	if (cbXferCur >= 32 + 4)
383	scsiPadStr((uint8_t *)pvBuf + 32, pszInqRevision, 4);
384	}
385
386	if (cbXferCur)
387	Log3(("ATAPI PT data read (%d): %.Rhxs\n", cbXferCur, cbXferCur, (uint8_t )pvBuf));
388	}
389
390	*pu8ScsiSts = drvHostDvdCmdOK(pThis);
391	}
392	else
393	{
394	do
395	{
396	/* don't log superfluous errors */
397	if ( rc == VERR_DEV_IO_ERROR
398	&& ( pbCdb[0] == SCSI_TEST_UNIT_READY
399	\|\| pbCdb[0] == SCSI_READ_CAPACITY
400	\|\| pbCdb[0] == SCSI_READ_DVD_STRUCTURE
401	\|\| pbCdb[0] == SCSI_READ_TOC_PMA_ATIP))
402	break;
403	LogRelMax(10, ("HostDVD#%u: CD-ROM passthrough cmd=%#04x sense=%d ASC=%#02x ASCQ=%#02x %Rrc\n",
404	pThis->Core.pDrvIns->iInstance, pbCdb[0], pThis->abATAPISense[2] & 0x0f,
405	pThis->abATAPISense[12], pThis->abATAPISense[13], rc));
406	} while (0);
407	*pu8ScsiSts = SCSI_STATUS_CHECK_CONDITION;
408	rc = VINF_SUCCESS;
409	}
410
411	if (cbXfer)
412	rc = drvHostBaseBufferRelease(&pThis->Core, pReq, cbXfer, enmXferDir == PDMMEDIATXDIR_TO_DEVICE, pvBuf);
413	}
414
415	/*
416	* We handled the command, check the status code and copy over the sense data if
417	* it is CHECK CONDITION.
418	*/
419	if ( *pu8ScsiSts == SCSI_STATUS_CHECK_CONDITION
420	&& RT_VALID_PTR(pabSense)
421	&& cbSense > 0)
422	{
423	size_t cbSenseCpy = RT_MIN(cbSense, sizeof(pThis->abATAPISense));
424
425	memcpy(pabSense, &pThis->abATAPISense[0], cbSenseCpy);
426	if (pcbSenseRet)
427	*pcbSenseRet = cbSenseCpy;
428	}
429
430	if (penmTxDirRet)
431	{
432	switch (enmXferDir)
433	{
434	case PDMMEDIATXDIR_NONE:
435	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_NONE;
436	break;
437	case PDMMEDIATXDIR_FROM_DEVICE:
438	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_FROM_DEVICE;
439	break;
440	case PDMMEDIATXDIR_TO_DEVICE:
441	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_TO_DEVICE;
442	break;
443	default:
444	*penmTxDirRet = PDMMEDIAEXIOREQSCSITXDIR_UNKNOWN;
445	}
446	}
447
448	RTCritSectLeave(&pThis->Core.CritSect);
449
450	LogFlow(("%s: rc=%Rrc\n", __FUNCTION__, rc));
451	return rc;
452	}
453
454
455	/* -=-=-=-=- driver interface -=-=-=-=- */
456
457
458	/** @interface_method_impl{PDMDRVREG,pfnDestruct} */
459	static DECLCALLBACK(void) drvHostDvdDestruct(PPDMDRVINS pDrvIns)
460	{
461	PDRVHOSTDVD pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDVD);
462
463	if (pThis->pTrackList)
464	{
465	ATAPIPassthroughTrackListDestroy(pThis->pTrackList);
466	pThis->pTrackList = NULL;
467	}
468
469	DRVHostBaseDestruct(pDrvIns);
470	}
471
472	/**
473	* Construct a host dvd drive driver instance.
474	*
475	* @copydoc FNPDMDRVCONSTRUCT
476	*/
477	static DECLCALLBACK(int) drvHostDvdConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
478	{
479	RT_NOREF(fFlags);
480	PDRVHOSTDVD pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDVD);
481	PCPDMDRVHLPR3 pHlp = pDrvIns->pHlpR3;
482
483	LogFlow(("drvHostDvdConstruct: iInstance=%d\n", pDrvIns->iInstance));
484
485	int rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "InquiryOverwrite", &pThis->fInquiryOverwrite, true);
486	if (RT_FAILURE(rc))
487	return PDMDRV_SET_ERROR(pDrvIns, rc,
488	N_("HostDVD configuration error: failed to read \"InquiryOverwrite\" as boolean"));
489
490	bool fPassthrough;
491	rc = pHlp->pfnCFGMQueryBool(pCfg, "Passthrough", &fPassthrough);
492	if (RT_SUCCESS(rc) && fPassthrough)
493	{
494	pThis->Core.IMedia.pfnSendCmd = drvHostDvdSendCmd;
495	pThis->Core.IMediaEx.pfnIoReqSendScsiCmd = drvHostDvdIoReqSendScsiCmd;
496	/* Passthrough requires opening the device in R/W mode. */
497	pThis->Core.fReadOnlyConfig = false;
498	}
499
500	pThis->Core.pfnDoLock = drvHostDvdDoLock;
501
502	/*
503	* Init instance data.
504	*/
505	rc = DRVHostBaseInit(pDrvIns, pCfg, "Path\0Interval\0Locked\0BIOSVisible\0AttachFailError\0Passthrough\0InquiryOverwrite\0",
506	PDMMEDIATYPE_DVD);
507	LogFlow(("drvHostDvdConstruct: returns %Rrc\n", rc));
508	return rc;
509	}
510
511	/**
512	* Reset a host dvd drive driver instance.
513	*
514	* @copydoc FNPDMDRVRESET
515	*/
516	static DECLCALLBACK(void) drvHostDvdReset(PPDMDRVINS pDrvIns)
517	{
518	PDRVHOSTDVD pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDVD);
519
520	if (pThis->pTrackList)
521	{
522	ATAPIPassthroughTrackListDestroy(pThis->pTrackList);
523	pThis->pTrackList = NULL;
524	}
525
526	int rc = drvHostBaseDoLockOs(&pThis->Core, false);
527	RT_NOREF(rc);
528	}
529
530
531	/**
532	* Block driver registration record.
533	*/
534	const PDMDRVREG g_DrvHostDVD =
535	{
536	/* u32Version */
537	PDM_DRVREG_VERSION,
538	/* szName */
539	"HostDVD",
540	/* szRCMod */
541	"",
542	/* szR0Mod */
543	"",
544	/* pszDescription */
545	"Host DVD Block Driver.",
546	/* fFlags */
547	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
548	/* fClass. */
549	PDM_DRVREG_CLASS_BLOCK,
550	/* cMaxInstances */
551	~0U,
552	/* cbInstance */
553	sizeof(DRVHOSTDVD),
554	/* pfnConstruct */
555	drvHostDvdConstruct,
556	/* pfnDestruct */
557	drvHostDvdDestruct,
558	/* pfnRelocate */
559	NULL,
560	/* pfnIOCtl */
561	NULL,
562	/* pfnPowerOn */
563	NULL,
564	/* pfnReset */
565	drvHostDvdReset,
566	/* pfnSuspend */
567	NULL,
568	/* pfnResume */
569	NULL,
570	/* pfnAttach */
571	NULL,
572	/* pfnDetach */
573	NULL,
574	/* pfnPowerOff */
575	NULL,
576	/* pfnSoftReset */
577	NULL,
578	/* u32EndVersion */
579	PDM_DRVREG_VERSION
580	};
581

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostDVD.cpp@ 106877

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