DrvHostDVD.cpp@ 4071

Last change on this file since 4071 was 4071, checked in by vboxsync, 17 years ago
Biggest check-in ever. New source code headers for all (C) innotek files.
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Line
1	/** @file
2	*
3	* VBox storage devices:
4	* Host DVD block driver
5	*/
6
7	/*
8	* Copyright (C) 2006-2007 innotek GmbH
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License as published by the Free Software Foundation,
14	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
15	* distribution. VirtualBox OSE is distributed in the hope that it will
16	* be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19
20	/*******************************************************************************
21	* Header Files *
22	*******************************************************************************/
23	#define LOG_GROUP LOG_GROUP_DRV_HOST_DVD
24	#ifdef RT_OS_DARWIN
25	# include <mach/mach.h>
26	# include <Carbon/Carbon.h>
27	# include <IOKit/IOKitLib.h>
28	# include <IOKit/IOCFPlugIn.h>
29	# include <IOKit/scsi-commands/SCSITaskLib.h>
30	# include <IOKit/scsi-commands/SCSICommandOperationCodes.h>
31	# include <IOKit/storage/IOStorageDeviceCharacteristics.h>
32	# include <mach/mach_error.h>
33	# define USE_MEDIA_POLLING
34
35	#elif defined(RT_OS_L4)
36	/* nothing (yet). */
37
38	#elif defined RT_OS_LINUX
39	# include <sys/ioctl.h>
40	/* This is a hack to work around conflicts between these linux kernel headers
41	* and the GLIBC tcpip headers. They have different declarations of the 4
42	* standard byte order functions. */
43	# define _LINUX_BYTEORDER_GENERIC_H
44	/* This is another hack for not bothering with C++ unfriendly byteswap macros. */
45	# define _LINUX_BYTEORDER_SWAB_H
46	/* Those macros that are needed are defined in the header below */
47	# include "swab.h"
48	# include <linux/cdrom.h>
49	# include <sys/fcntl.h>
50	# include <errno.h>
51	# define USE_MEDIA_POLLING
52
53	#elif defined(RT_OS_WINDOWS)
54	# include <Windows.h>
55	# include <winioctl.h>
56	# include <ntddscsi.h>
57	# undef USE_MEDIA_POLLING
58
59	#else
60	# error "Unsupported Platform."
61	#endif
62
63	#include <VBox/pdmdrv.h>
64	#include <iprt/assert.h>
65	#include <iprt/file.h>
66	#include <iprt/string.h>
67	#include <iprt/thread.h>
68	#include <iprt/critsect.h>
69	#include <VBox/scsi.h>
70
71	#include "Builtins.h"
72	#include "DrvHostBase.h"
73
74
75	/* Forward declarations. */
76
77	static DECLCALLBACK(int) drvHostDvdDoLock(PDRVHOSTBASE pThis, bool fLock);
78
79
80	/** @copydoc PDMIMOUNT::pfnUnmount */
81	static DECLCALLBACK(int) drvHostDvdUnmount(PPDMIMOUNT pInterface, bool fForce)
82	{
83	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
84	RTCritSectEnter(&pThis->CritSect);
85
86	/*
87	* Validate state.
88	*/
89	int rc = VINF_SUCCESS;
90	if (!pThis->fLocked \|\| fForce)
91	{
92	/* Unlock drive if necessary. */
93	if (pThis->fLocked)
94	drvHostDvdDoLock(pThis, false);
95
96	/*
97	* Eject the disc.
98	*/
99	#ifdef RT_OS_DARWIN
100	uint8_t abCmd[16] =
101	{
102	SCSI_START_STOP_UNIT, 0, 0, 0, 2 /eject+stop/, 0,
103	0,0,0,0,0,0,0,0,0,0
104	};
105	rc = DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_NONE, NULL, NULL, NULL, 0, 0);
106
107	#elif defined(RT_OS_LINUX)
108	rc = ioctl(pThis->FileDevice, CDROMEJECT, 0);
109	if (rc < 0)
110	{
111	if (errno == EBUSY)
112	rc = VERR_PDM_MEDIA_LOCKED;
113	else if (errno == ENOSYS)
114	rc = VERR_NOT_SUPPORTED;
115	else
116	rc = RTErrConvertFromErrno(errno);
117	}
118
119	#elif defined(RT_OS_WINDOWS)
120	RTFILE FileDevice = pThis->FileDevice;
121	if (FileDevice == NIL_RTFILE) /* obsolete crap */
122	rc = RTFileOpen(&FileDevice, pThis->pszDeviceOpen, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
123	if (VBOX_SUCCESS(rc))
124	{
125	/* do ioctl */
126	DWORD cbReturned;
127	if (DeviceIoControl((HANDLE)FileDevice, IOCTL_STORAGE_EJECT_MEDIA,
128	NULL, 0,
129	NULL, 0, &cbReturned,
130	NULL))
131	rc = VINF_SUCCESS;
132	else
133	rc = RTErrConvertFromWin32(GetLastError());
134
135	/* clean up handle */
136	if (FileDevice != pThis->FileDevice)
137	RTFileClose(FileDevice);
138	}
139	else
140	AssertMsgFailed(("Failed to open '%s' for ejecting this tray.\n", rc));
141
142
143	#else
144	AssertMsgFailed(("Eject is not implemented!\n"));
145	rc = VINF_SUCCESS;
146	#endif
147
148	/*
149	* Media is no longer present.
150	*/
151	DRVHostBaseMediaNotPresent(pThis); /** @todo This isn't thread safe! */
152	}
153	else
154	{
155	Log(("drvHostDvdUnmount: Locked\n"));
156	rc = VERR_PDM_MEDIA_LOCKED;
157	}
158
159	RTCritSectLeave(&pThis->CritSect);
160	LogFlow(("drvHostDvdUnmount: returns %Vrc\n", rc));
161	return rc;
162	}
163
164
165	/**
166	* Locks or unlocks the drive.
167	*
168	* @returns VBox status code.
169	* @param pThis The instance data.
170	* @param fLock True if the request is to lock the drive, false if to unlock.
171	*/
172	static DECLCALLBACK(int) drvHostDvdDoLock(PDRVHOSTBASE pThis, bool fLock)
173	{
174	#ifdef RT_OS_DARWIN
175	uint8_t abCmd[16] =
176	{
177	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, fLock, 0,
178	0,0,0,0,0,0,0,0,0,0
179	};
180	int rc = DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_NONE, NULL, NULL, NULL, 0, 0);
181
182	#elif defined(RT_OS_LINUX)
183	int rc = ioctl(pThis->FileDevice, CDROM_LOCKDOOR, (int)fLock);
184	if (rc < 0)
185	{
186	if (errno == EBUSY)
187	rc = VERR_ACCESS_DENIED;
188	else if (errno == EDRIVE_CANT_DO_THIS)
189	rc = VERR_NOT_SUPPORTED;
190	else
191	rc = RTErrConvertFromErrno(errno);
192	}
193
194	#elif defined(RT_OS_WINDOWS)
195
196	PREVENT_MEDIA_REMOVAL PreventMediaRemoval = {fLock};
197	DWORD cbReturned;
198	int rc;
199	if (DeviceIoControl((HANDLE)pThis->FileDevice, IOCTL_STORAGE_MEDIA_REMOVAL,
200	&PreventMediaRemoval, sizeof(PreventMediaRemoval),
201	NULL, 0, &cbReturned,
202	NULL))
203	rc = VINF_SUCCESS;
204	else
205	/** @todo figure out the return codes for already locked. */
206	rc = RTErrConvertFromWin32(GetLastError());
207
208	#else
209	AssertMsgFailed(("Lock/Unlock is not implemented!\n"));
210	int rc = VINF_SUCCESS;
211
212	#endif
213
214	LogFlow(("drvHostDvdDoLock(, fLock=%RTbool): returns %Vrc\n", fLock, rc));
215	return rc;
216	}
217
218
219
220	#ifdef RT_OS_LINUX
221	/**
222	* Get the media size.
223	*
224	* @returns VBox status code.
225	* @param pThis The instance data.
226	* @param pcb Where to store the size.
227	*/
228	static int drvHostDvdGetMediaSize(PDRVHOSTBASE pThis, uint64_t *pcb)
229	{
230	/*
231	* Query the media size.
232	*/
233	/* Clear the media-changed-since-last-call-thingy just to be on the safe side. */
234	ioctl(pThis->FileDevice, CDROM_MEDIA_CHANGED, CDSL_CURRENT);
235	return RTFileSeek(pThis->FileDevice, 0, RTFILE_SEEK_END, pcb);
236
237	}
238	#endif /* RT_OS_LINUX */
239
240
241	#ifdef USE_MEDIA_POLLING
242	/**
243	* Do media change polling.
244	*/
245	DECLCALLBACK(int) drvHostDvdPoll(PDRVHOSTBASE pThis)
246	{
247	/*
248	* Poll for media change.
249	*/
250	#ifdef RT_OS_DARWIN
251	AssertReturn(pThis->ppScsiTaskDI, VERR_INTERNAL_ERROR);
252
253	/*
254	* Issue a TEST UNIT READY request.
255	*/
256	bool fMediaChanged = false;
257	bool fMediaPresent = false;
258	uint8_t abCmd[16] = { SCSI_TEST_UNIT_READY, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
259	uint8_t abSense[32];
260	int rc2 = DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_NONE, NULL, NULL, abSense, sizeof(abSense), 0);
261	if (VBOX_SUCCESS(rc2))
262	fMediaPresent = true;
263	else if ( rc2 == VERR_UNRESOLVED_ERROR
264	&& abSense[2] == 6 /* unit attention */
265	&& ( (abSense[12] == 0x29 && abSense[13] < 5 /* reset */)
266	\|\| (abSense[12] == 0x2a && abSense[13] == 0 /* parameters changed */) //???
267	\|\| (abSense[12] == 0x3f && abSense[13] == 0 /* target operating conditions have changed */) //???
268	\|\| (abSense[12] == 0x3f && abSense[13] == 2 /* changed operating definition */) //???
269	\|\| (abSense[12] == 0x3f && abSense[13] == 3 /* inquery parameters changed */)
270	\|\| (abSense[12] == 0x3f && abSense[13] == 5 /* device identifier changed */)
271	)
272	)
273	{
274	fMediaPresent = false;
275	fMediaChanged = true;
276	/** @todo check this media chance stuff on Darwin. */
277	}
278
279	#elif defined(RT_OS_LINUX)
280	bool fMediaPresent = ioctl(pThis->FileDevice, CDROM_DRIVE_STATUS, CDSL_CURRENT) == CDS_DISC_OK;
281
282	#else
283	# error "Unsupported platform."
284	#endif
285
286	RTCritSectEnter(&pThis->CritSect);
287
288	int rc = VINF_SUCCESS;
289	if (pThis->fMediaPresent != fMediaPresent)
290	{
291	LogFlow(("drvHostDvdPoll: %d -> %d\n", pThis->fMediaPresent, fMediaPresent));
292	pThis->fMediaPresent = false;
293	if (fMediaPresent)
294	rc = DRVHostBaseMediaPresent(pThis);
295	else
296	DRVHostBaseMediaNotPresent(pThis);
297	}
298	else if (fMediaPresent)
299	{
300	/*
301	* Poll for media change.
302	*/
303	#ifdef RT_OS_DARWIN
304	/* taken care of above. */
305	#elif defined(RT_OS_LINUX)
306	bool fMediaChanged = ioctl(pThis->FileDevice, CDROM_MEDIA_CHANGED, CDSL_CURRENT) == 1;
307	#else
308	# error "Unsupported platform."
309	#endif
310	if (fMediaChanged)
311	{
312	LogFlow(("drvHostDVDMediaThread: Media changed!\n"));
313	DRVHostBaseMediaNotPresent(pThis);
314	rc = DRVHostBaseMediaPresent(pThis);
315	}
316	}
317
318	RTCritSectLeave(&pThis->CritSect);
319	return rc;
320	}
321	#endif /* USE_MEDIA_POLLING */
322
323
324	/** @copydoc PDMIBLOCK::pfnSendCmd */
325	static int drvHostDvdSendCmd(PPDMIBLOCK pInterface, const uint8_t pbCmd, PDMBLOCKTXDIR enmTxDir, void pvBuf, size_t *pcbBuf,
326	uint8_t *pbStat, uint32_t cTimeoutMillies)
327	{
328	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
329	int rc;
330	LogFlow(("%s: cmd[0]=%#04x txdir=%d pcbBuf=%d timeout=%d\n", __FUNCTION__, pbCmd[0], enmTxDir, *pcbBuf, cTimeoutMillies));
331
332	#ifdef RT_OS_DARWIN
333	/*
334	* Pass the request on to the internal scsi command interface.
335	* The command seems to be 12 bytes long, the docs a bit copy&pasty on the command length point...
336	*/
337	if (enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE)
338	memset(pvBuf, '\0', pcbBuf); / we got read size, but zero it anyway. */
339	uint8_t abSense[32];
340	rc = DRVHostBaseScsiCmd(pThis, pbCmd, 12, PDMBLOCKTXDIR_FROM_DEVICE, pvBuf, pcbBuf, abSense, sizeof(abSense), cTimeoutMillies);
341	if (rc == VERR_UNRESOLVED_ERROR)
342	{
343	*pbStat = abSense[2] & 0x0f;
344	rc = VINF_SUCCESS;
345	}
346
347	#elif defined(RT_OS_L4)
348	/* Not really ported to L4 yet. */
349	rc = VERR_INTERNAL_ERROR;
350
351	#elif defined(RT_OS_LINUX)
352	int direction;
353	struct cdrom_generic_command cgc;
354	request_sense sense;
355
356	switch (enmTxDir)
357	{
358	case PDMBLOCKTXDIR_NONE:
359	Assert(*pcbBuf == 0);
360	direction = CGC_DATA_NONE;
361	break;
362	case PDMBLOCKTXDIR_FROM_DEVICE:
363	Assert(*pcbBuf != 0);
364	/* Make sure that the buffer is clear for commands reading
365	* data. The actually received data may be shorter than what
366	* we expect, and due to the unreliable feedback about how much
367	* data the ioctl actually transferred, it's impossible to
368	* prevent that. Returning previous buffer contents may cause
369	* security problems inside the guest OS, if users can issue
370	* commands to the CDROM device. */
371	memset(pvBuf, '\0', *pcbBuf);
372	direction = CGC_DATA_READ;
373	break;
374	case PDMBLOCKTXDIR_TO_DEVICE:
375	Assert(*pcbBuf != 0);
376	direction = CGC_DATA_WRITE;
377	break;
378	default:
379	AssertMsgFailed(("enmTxDir invalid!\n"));
380	direction = CGC_DATA_NONE;
381	}
382	memset(&cgc, '\0', sizeof(cgc));
383	memcpy(cgc.cmd, pbCmd, CDROM_PACKET_SIZE);
384	cgc.buffer = (unsigned char *)pvBuf;
385	cgc.buflen = *pcbBuf;
386	cgc.stat = 0;
387	cgc.sense = &sense;
388	cgc.data_direction = direction;
389	cgc.quiet = false;
390	cgc.timeout = cTimeoutMillies;
391	rc = ioctl(pThis->FileDevice, CDROM_SEND_PACKET, &cgc);
392	if (rc < 0)
393	{
394	if (errno == EBUSY)
395	rc = VERR_PDM_MEDIA_LOCKED;
396	else if (errno == ENOSYS)
397	rc = VERR_NOT_SUPPORTED;
398	else
399	{
400	if (rc == VERR_ACCESS_DENIED && cgc.sense->sense_key == SCSI_SENSE_NONE)
401	cgc.sense->sense_key = SCSI_SENSE_ILLEGAL_REQUEST;
402	*pbStat = cgc.sense->sense_key;
403	rc = RTErrConvertFromErrno(errno);
404	Log2(("%s: error status %d, rc=%Vrc\n", __FUNCTION__, cgc.stat, rc));
405	}
406	}
407	Log2(("%s: after ioctl: cgc.buflen=%d txlen=%d\n", __FUNCTION__, cgc.buflen, *pcbBuf));
408	/* The value of cgc.buflen does not reliably reflect the actual amount
409	* of data transferred (for packet commands with little data transfer
410	* it's 0). So just assume that everything worked ok. */
411
412	#elif defined(RT_OS_WINDOWS)
413	int direction;
414	struct _REQ
415	{
416	SCSI_PASS_THROUGH_DIRECT spt;
417	uint8_t aSense[18];
418	} Req;
419	DWORD cbReturned = 0;
420
421	switch (enmTxDir)
422	{
423	case PDMBLOCKTXDIR_NONE:
424	direction = SCSI_IOCTL_DATA_UNSPECIFIED;
425	break;
426	case PDMBLOCKTXDIR_FROM_DEVICE:
427	Assert(*pcbBuf != 0);
428	/* Make sure that the buffer is clear for commands reading
429	* data. The actually received data may be shorter than what
430	* we expect, and due to the unreliable feedback about how much
431	* data the ioctl actually transferred, it's impossible to
432	* prevent that. Returning previous buffer contents may cause
433	* security problems inside the guest OS, if users can issue
434	* commands to the CDROM device. */
435	memset(pvBuf, '\0', *pcbBuf);
436	direction = SCSI_IOCTL_DATA_IN;
437	break;
438	case PDMBLOCKTXDIR_TO_DEVICE:
439	direction = SCSI_IOCTL_DATA_OUT;
440	break;
441	default:
442	AssertMsgFailed(("enmTxDir invalid!\n"));
443	direction = SCSI_IOCTL_DATA_UNSPECIFIED;
444	}
445	memset(&Req, '\0', sizeof(Req));
446	Req.spt.Length = sizeof(Req.spt);
447	Req.spt.CdbLength = 12;
448	memcpy(Req.spt.Cdb, pbCmd, Req.spt.CdbLength);
449	Req.spt.DataBuffer = pvBuf;
450	Req.spt.DataTransferLength = *pcbBuf;
451	Req.spt.DataIn = direction;
452	Req.spt.TimeOutValue = (cTimeoutMillies + 999) / 1000; /* Convert to seconds */
453	Req.spt.SenseInfoLength = sizeof(Req.aSense);
454	Req.spt.SenseInfoOffset = RT_OFFSETOF(struct _REQ, aSense);
455	if (DeviceIoControl((HANDLE)pThis->FileDevice, IOCTL_SCSI_PASS_THROUGH_DIRECT,
456	&Req, sizeof(Req), &Req, sizeof(Req), &cbReturned, NULL))
457	{
458	if (cbReturned > RT_OFFSETOF(struct _REQ, aSense))
459	*pbStat = Req.aSense[2] & 0x0f;
460	else
461	*pbStat = 0;
462	/* Windows shares the property of not properly reflecting the actually
463	* transferred data size. See above. Assume that everything worked ok. */
464	rc = VINF_SUCCESS;
465	}
466	else
467	rc = RTErrConvertFromWin32(GetLastError());
468	Log2(("%s: scsistatus=%d bytes returned=%d tlength=%d\n", __FUNCTION__, Req.spt.ScsiStatus, cbReturned, Req.spt.DataTransferLength));
469
470	#else
471	# error "Unsupported platform."
472	#endif
473	LogFlow(("%s: rc=%Vrc\n", __FUNCTION__, rc));
474	return rc;
475	}
476
477
478	/* -=-=-=-=- driver interface -=-=-=-=- */
479
480
481	/**
482	* Construct a host dvd drive driver instance.
483	*
484	* @returns VBox status.
485	* @param pDrvIns The driver instance data.
486	* If the registration structure is needed, pDrvIns->pDrvReg points to it.
487	* @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
488	* of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
489	* iInstance it's expected to be used a bit in this function.
490	*/
491	static DECLCALLBACK(int) drvHostDvdConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
492	{
493	PDRVHOSTBASE pThis = PDMINS2DATA(pDrvIns, PDRVHOSTBASE);
494	LogFlow(("drvHostDvdConstruct: iInstance=%d\n", pDrvIns->iInstance));
495
496	/*
497	* Validate configuration.
498	*/
499	if (!CFGMR3AreValuesValid(pCfgHandle, "Path\0Interval\0Locked\0BIOSVisible\0AttachFailError\0Passthrough\0"))
500	return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
501
502
503	/*
504	* Init instance data.
505	*/
506	int rc = DRVHostBaseInitData(pDrvIns, pCfgHandle, PDMBLOCKTYPE_DVD);
507	if (VBOX_SUCCESS(rc))
508	{
509	/*
510	* Override stuff.
511	*/
512
513	#ifndef RT_OS_L4 /* Passthrough is not supported on L4 yet */
514	bool fPassthrough;
515	rc = CFGMR3QueryBool(pCfgHandle, "Passthrough", &fPassthrough);
516	if (VBOX_SUCCESS(rc) && fPassthrough)
517	{
518	pThis->IBlock.pfnSendCmd = drvHostDvdSendCmd;
519	/* Passthrough requires opening the device in R/W mode. */
520	pThis->fReadOnlyConfig = false;
521	}
522	#endif /* !RT_OS_L4 */
523
524	pThis->IMount.pfnUnmount = drvHostDvdUnmount;
525	pThis->pfnDoLock = drvHostDvdDoLock;
526	#ifdef USE_MEDIA_POLLING
527	if (!fPassthrough)
528	pThis->pfnPoll = drvHostDvdPoll;
529	else
530	pThis->pfnPoll = NULL;
531	#endif
532	#ifdef RT_OS_LINUX
533	pThis->pfnGetMediaSize = drvHostDvdGetMediaSize;
534	#endif
535
536	/*
537	* 2nd init part.
538	*/
539	rc = DRVHostBaseInitFinish(pThis);
540	}
541
542	if (VBOX_FAILURE(rc))
543	{
544	if (!pThis->fAttachFailError)
545	{
546	/* Suppressing the attach failure error must not affect the normal
547	* DRVHostBaseDestruct, so reset this flag below before leaving. */
548	pThis->fKeepInstance = true;
549	rc = VINF_SUCCESS;
550	}
551	DRVHostBaseDestruct(pDrvIns);
552	pThis->fKeepInstance = false;
553	}
554
555	LogFlow(("drvHostDvdConstruct: returns %Vrc\n", rc));
556	return rc;
557	}
558
559
560	/**
561	* Block driver registration record.
562	*/
563	const PDMDRVREG g_DrvHostDVD =
564	{
565	/* u32Version */
566	PDM_DRVREG_VERSION,
567	/* szDriverName */
568	"HostDVD",
569	/* pszDescription */
570	"Host DVD Block Driver.",
571	/* fFlags */
572	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
573	/* fClass. */
574	PDM_DRVREG_CLASS_BLOCK,
575	/* cMaxInstances */
576	~0,
577	/* cbInstance */
578	sizeof(DRVHOSTBASE),
579	/* pfnConstruct */
580	drvHostDvdConstruct,
581	/* pfnDestruct */
582	DRVHostBaseDestruct,
583	/* pfnIOCtl */
584	NULL,
585	/* pfnPowerOn */
586	NULL,
587	/* pfnReset */
588	NULL,
589	/* pfnSuspend */
590	NULL,
591	/* pfnResume */
592	NULL,
593	/* pfnDetach */
594	NULL
595	};
596

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostDVD.cpp@ 4071

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