DrvHostBase.cpp@ 4014

Last change on this file since 4014 was 4014, checked in by vboxsync, 17 years ago
Use pdmdrv.h and pdmdev.h where appropirate.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 67.7 KB

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1	/** @file
2	*
3	* VBox storage devices:
4	* Host base drive access 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	* If you received this file as part of a commercial VirtualBox
19	* distribution, then only the terms of your commercial VirtualBox
20	* license agreement apply instead of the previous paragraph.
21	*/
22
23
24	/*******************************************************************************
25	* Header Files *
26	*******************************************************************************/
27	#define LOG_GROUP LOG_GROUP_DRV_HOST_BASE
28	#ifdef RT_OS_DARWIN
29	# include <mach/mach.h>
30	# include <Carbon/Carbon.h>
31	# include <IOKit/IOKitLib.h>
32	# include <IOKit/storage/IOStorageDeviceCharacteristics.h>
33	# include <IOKit/scsi-commands/SCSITaskLib.h>
34	# include <IOKit/scsi-commands/SCSICommandOperationCodes.h>
35	# include <IOKit/IOBSD.h>
36	# include <DiskArbitration/DiskArbitration.h>
37	# include <mach/mach_error.h>
38	# include <VBox/scsi.h>
39
40	#elif defined(RT_OS_L4)
41	/* Nothing special requires... yeah, right. */
42
43	#elif defined(RT_OS_LINUX)
44	# include <sys/ioctl.h>
45	# include <sys/fcntl.h>
46	# include <errno.h>
47
48	#elif defined(RT_OS_WINDOWS)
49	# define WIN32_NO_STATUS
50	# include <Windows.h>
51	# include <dbt.h>
52	# undef WIN32_NO_STATUS
53	# include <ntstatus.h>
54
55	/* from ntdef.h */
56	typedef LONG NTSTATUS;
57
58	/* from ntddk.h */
59	typedef struct _IO_STATUS_BLOCK {
60	union {
61	NTSTATUS Status;
62	PVOID Pointer;
63	};
64	ULONG_PTR Information;
65	} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
66
67
68	/* from ntinternals.com */
69	typedef enum _FS_INFORMATION_CLASS {
70	FileFsVolumeInformation=1,
71	FileFsLabelInformation,
72	FileFsSizeInformation,
73	FileFsDeviceInformation,
74	FileFsAttributeInformation,
75	FileFsControlInformation,
76	FileFsFullSizeInformation,
77	FileFsObjectIdInformation,
78	FileFsMaximumInformation
79	} FS_INFORMATION_CLASS, *PFS_INFORMATION_CLASS;
80
81	typedef struct _FILE_FS_SIZE_INFORMATION {
82	LARGE_INTEGER TotalAllocationUnits;
83	LARGE_INTEGER AvailableAllocationUnits;
84	ULONG SectorsPerAllocationUnit;
85	ULONG BytesPerSector;
86	} FILE_FS_SIZE_INFORMATION, *PFILE_FS_SIZE_INFORMATION;
87
88	extern "C"
89	NTSTATUS __stdcall NtQueryVolumeInformationFile(
90	/IN/ HANDLE FileHandle,
91	/OUT/ PIO_STATUS_BLOCK IoStatusBlock,
92	/OUT/ PVOID FileSystemInformation,
93	/IN/ ULONG Length,
94	/IN/ FS_INFORMATION_CLASS FileSystemInformationClass );
95
96	#else
97	# error "Unsupported Platform."
98	#endif
99
100	#include <VBox/pdmdrv.h>
101	#include <iprt/assert.h>
102	#include <iprt/file.h>
103	#include <iprt/path.h>
104	#include <iprt/string.h>
105	#include <iprt/thread.h>
106	#include <iprt/semaphore.h>
107	#include <iprt/uuid.h>
108	#include <iprt/asm.h>
109	#include <iprt/critsect.h>
110	#include <iprt/ctype.h>
111
112	#include "DrvHostBase.h"
113
114
115
116
117	/* -=-=-=-=- IBlock -=-=-=-=- */
118
119	/** @copydoc PDMIBLOCK::pfnRead */
120	static DECLCALLBACK(int) drvHostBaseRead(PPDMIBLOCK pInterface, uint64_t off, void *pvBuf, size_t cbRead)
121	{
122	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
123	LogFlow(("%s-%d: drvHostBaseRead: off=%#llx pvBuf=%p cbRead=%#x (%s)\n",
124	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, off, pvBuf, cbRead, pThis->pszDevice));
125	RTCritSectEnter(&pThis->CritSect);
126
127	/*
128	* Check the state.
129	*/
130	int rc;
131	#ifdef RT_OS_DARWIN
132	if ( pThis->fMediaPresent
133	&& pThis->ppScsiTaskDI
134	&& pThis->cbBlock)
135	#else
136	if (pThis->fMediaPresent)
137	#endif
138	{
139	#ifdef RT_OS_DARWIN
140	/*
141	* Issue a READ(12) request.
142	*/
143	const uint32_t LBA = off / pThis->cbBlock;
144	AssertReturn(!(off % pThis->cbBlock), VERR_INVALID_PARAMETER);
145	const uint32_t cBlocks = cbRead / pThis->cbBlock;
146	AssertReturn(!(cbRead % pThis->cbBlock), VERR_INVALID_PARAMETER);
147	uint8_t abCmd[16] =
148	{
149	SCSI_READ_12, 0,
150	RT_BYTE4(LBA), RT_BYTE3(LBA), RT_BYTE2(LBA), RT_BYTE1(LBA),
151	RT_BYTE4(cBlocks), RT_BYTE3(cBlocks), RT_BYTE2(cBlocks), RT_BYTE1(cBlocks),
152	0, 0, 0, 0, 0
153	};
154	rc = DRVHostBaseScsiCmd(pThis, abCmd, 12, PDMBLOCKTXDIR_FROM_DEVICE, pvBuf, &cbRead, NULL, 0, 0);
155
156	#else
157	/*
158	* Seek and read.
159	*/
160	rc = RTFileSeek(pThis->FileDevice, off, RTFILE_SEEK_BEGIN, NULL);
161	if (VBOX_SUCCESS(rc))
162	{
163	rc = RTFileRead(pThis->FileDevice, pvBuf, cbRead, NULL);
164	if (VBOX_SUCCESS(rc))
165	{
166	Log2(("%s-%d: drvHostBaseRead: off=%#llx cbRead=%#x\n"
167	"%16.*Vhxd\n",
168	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, off, cbRead, cbRead, pvBuf));
169	}
170	else
171	Log(("%s-%d: drvHostBaseRead: RTFileRead(%d, %p, %#x) -> %Vrc (off=%#llx '%s')\n",
172	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->FileDevice,
173	pvBuf, cbRead, rc, off, pThis->pszDevice));
174	}
175	else
176	Log(("%s-%d: drvHostBaseRead: RTFileSeek(%d,%#llx,) -> %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName,
177	pThis->pDrvIns->iInstance, pThis->FileDevice, off, rc));
178	#endif
179	}
180	else
181	rc = VERR_MEDIA_NOT_PRESENT;
182
183	RTCritSectLeave(&pThis->CritSect);
184	LogFlow(("%s-%d: drvHostBaseRead: returns %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc));
185	return rc;
186	}
187
188
189	/** @copydoc PDMIBLOCK::pfnWrite */
190	static DECLCALLBACK(int) drvHostBaseWrite(PPDMIBLOCK pInterface, uint64_t off, const void *pvBuf, size_t cbWrite)
191	{
192	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
193	LogFlow(("%s-%d: drvHostBaseWrite: off=%#llx pvBuf=%p cbWrite=%#x (%s)\n",
194	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, off, pvBuf, cbWrite, pThis->pszDevice));
195	Log2(("%s-%d: drvHostBaseWrite: off=%#llx cbWrite=%#x\n"
196	"%16.*Vhxd\n",
197	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, off, cbWrite, cbWrite, pvBuf));
198	RTCritSectEnter(&pThis->CritSect);
199
200	/*
201	* Check the state.
202	*/
203	int rc;
204	if (!pThis->fReadOnly)
205	{
206	if (pThis->fMediaPresent)
207	{
208	#ifdef RT_OS_DARWIN
209	/** @todo write support... */
210	rc = VERR_WRITE_PROTECT;
211
212	#else
213	/*
214	* Seek and write.
215	*/
216	rc = RTFileSeek(pThis->FileDevice, off, RTFILE_SEEK_BEGIN, NULL);
217	if (VBOX_SUCCESS(rc))
218	{
219	rc = RTFileWrite(pThis->FileDevice, pvBuf, cbWrite, NULL);
220	if (VBOX_FAILURE(rc))
221	Log(("%s-%d: drvHostBaseWrite: RTFileWrite(%d, %p, %#x) -> %Vrc (off=%#llx '%s')\n",
222	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->FileDevice,
223	pvBuf, cbWrite, rc, off, pThis->pszDevice));
224	}
225	else
226	Log(("%s-%d: drvHostBaseWrite: RTFileSeek(%d,%#llx,) -> %Vrc\n",
227	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->FileDevice, off, rc));
228	#endif
229	}
230	else
231	rc = VERR_MEDIA_NOT_PRESENT;
232	}
233	else
234	rc = VERR_WRITE_PROTECT;
235
236	RTCritSectLeave(&pThis->CritSect);
237	LogFlow(("%s-%d: drvHostBaseWrite: returns %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc));
238	return rc;
239	}
240
241
242	/** @copydoc PDMIBLOCK::pfnFlush */
243	static DECLCALLBACK(int) drvHostBaseFlush(PPDMIBLOCK pInterface)
244	{
245	int rc;
246	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
247	LogFlow(("%s-%d: drvHostBaseFlush: (%s)\n",
248	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->pszDevice));
249	RTCritSectEnter(&pThis->CritSect);
250
251	if (pThis->fMediaPresent)
252	{
253	#ifdef RT_OS_DARWIN
254	rc = VINF_SUCCESS;
255	/** @todo scsi device buffer flush... */
256	#else
257	rc = RTFileFlush(pThis->FileDevice);
258	#endif
259	}
260	else
261	rc = VERR_MEDIA_NOT_PRESENT;
262
263	RTCritSectLeave(&pThis->CritSect);
264	LogFlow(("%s-%d: drvHostBaseFlush: returns %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc));
265	return rc;
266	}
267
268
269	/** @copydoc PDMIBLOCK::pfnIsReadOnly */
270	static DECLCALLBACK(bool) drvHostBaseIsReadOnly(PPDMIBLOCK pInterface)
271	{
272	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
273	return pThis->fReadOnly;
274	}
275
276
277	/** @copydoc PDMIBLOCK::pfnGetSize */
278	static DECLCALLBACK(uint64_t) drvHostBaseGetSize(PPDMIBLOCK pInterface)
279	{
280	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
281	RTCritSectEnter(&pThis->CritSect);
282
283	uint64_t cb = 0;
284	if (pThis->fMediaPresent)
285	cb = pThis->cbSize;
286
287	RTCritSectLeave(&pThis->CritSect);
288	LogFlow(("%s-%d: drvHostBaseGetSize: returns %llu\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, cb));
289	return cb;
290	}
291
292
293	/** @copydoc PDMIBLOCK::pfnGetType */
294	static DECLCALLBACK(PDMBLOCKTYPE) drvHostBaseGetType(PPDMIBLOCK pInterface)
295	{
296	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
297	LogFlow(("%s-%d: drvHostBaseGetType: returns %d\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->enmType));
298	return pThis->enmType;
299	}
300
301
302	/** @copydoc PDMIBLOCK::pfnGetUuid */
303	static DECLCALLBACK(int) drvHostBaseGetUuid(PPDMIBLOCK pInterface, PRTUUID pUuid)
304	{
305	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
306
307	*pUuid = pThis->Uuid;
308
309	LogFlow(("%s-%d: drvHostBaseGetUuid: returns VINF_SUCCESS *pUuid=%Vuuid\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pUuid));
310	return VINF_SUCCESS;
311	}
312
313
314	/* -=-=-=-=- IBlockBios -=-=-=-=- */
315
316	/** Makes a PDRVHOSTBASE out of a PPDMIBLOCKBIOS. */
317	#define PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface) ( (PDRVHOSTBASE((uintptr_t)pInterface - RT_OFFSETOF(DRVHOSTBASE, IBlockBios))) )
318
319
320	/** @copydoc PDMIBLOCKBIOS::pfnGetGeometry */
321	static DECLCALLBACK(int) drvHostBaseGetGeometry(PPDMIBLOCKBIOS pInterface, uint32_t pcCylinders, uint32_t pcHeads, uint32_t *pcSectors)
322	{
323	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
324	RTCritSectEnter(&pThis->CritSect);
325
326	int rc = VINF_SUCCESS;
327	if (pThis->fMediaPresent)
328	{
329	if ( pThis->cCylinders > 0
330	&& pThis->cHeads > 0
331	&& pThis->cSectors > 0)
332	{
333	*pcCylinders = pThis->cCylinders;
334	*pcHeads = pThis->cHeads;
335	*pcSectors = pThis->cSectors;
336	}
337	else
338	rc = VERR_PDM_GEOMETRY_NOT_SET;
339	}
340	else
341	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
342
343	RTCritSectLeave(&pThis->CritSect);
344	LogFlow(("%s-%d: drvHostBaseGetGeometry: returns %Vrc CHS={%d,%d,%d}\n",
345	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc, pcCylinders, pcHeads, *pcSectors));
346	return rc;
347	}
348
349
350	/** @copydoc PDMIBLOCKBIOS::pfnSetGeometry */
351	static DECLCALLBACK(int) drvHostBaseSetGeometry(PPDMIBLOCKBIOS pInterface, uint32_t cCylinders, uint32_t cHeads, uint32_t cSectors)
352	{
353	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
354	LogFlow(("%s-%d: drvHostBaseSetGeometry: cCylinders=%d cHeads=%d cSectors=%d\n",
355	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, cCylinders, cHeads, cSectors));
356	RTCritSectEnter(&pThis->CritSect);
357
358	int rc = VINF_SUCCESS;
359	if (pThis->fMediaPresent)
360	{
361	pThis->cCylinders = cCylinders;
362	pThis->cHeads = cHeads;
363	pThis->cSectors = cSectors;
364	}
365	else
366	{
367	AssertMsgFailed(("Invalid state! Not mounted!\n"));
368	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
369	}
370
371	RTCritSectLeave(&pThis->CritSect);
372	return rc;
373	}
374
375
376	/** @copydoc PDMIBLOCKBIOS::pfnGetTranslation */
377	static DECLCALLBACK(int) drvHostBaseGetTranslation(PPDMIBLOCKBIOS pInterface, PPDMBIOSTRANSLATION penmTranslation)
378	{
379	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
380	RTCritSectEnter(&pThis->CritSect);
381
382	int rc = VINF_SUCCESS;
383	if (pThis->fMediaPresent)
384	{
385	if (pThis->fTranslationSet)
386	*penmTranslation = pThis->enmTranslation;
387	else
388	rc = VERR_PDM_TRANSLATION_NOT_SET;
389	}
390	else
391	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
392
393	RTCritSectLeave(&pThis->CritSect);
394	LogFlow(("%s-%d: drvHostBaseGetTranslation: returns %Vrc *penmTranslation=%d\n",
395	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc, *penmTranslation));
396	return rc;
397	}
398
399
400	/** @copydoc PDMIBLOCKBIOS::pfnSetTranslation */
401	static DECLCALLBACK(int) drvHostBaseSetTranslation(PPDMIBLOCKBIOS pInterface, PDMBIOSTRANSLATION enmTranslation)
402	{
403	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
404	LogFlow(("%s-%d: drvHostBaseSetTranslation: enmTranslation=%d\n",
405	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, enmTranslation));
406	RTCritSectEnter(&pThis->CritSect);
407
408	int rc = VINF_SUCCESS;
409	if (pThis->fMediaPresent)
410	{
411	pThis->fTranslationSet = true;
412	pThis->enmTranslation = enmTranslation;
413	}
414	else
415	{
416	AssertMsgFailed(("Invalid state! Not mounted!\n"));
417	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
418	}
419
420	RTCritSectLeave(&pThis->CritSect);
421	return rc;
422	}
423
424
425	/** @copydoc PDMIBLOCKBIOS::pfnIsVisible */
426	static DECLCALLBACK(bool) drvHostBaseIsVisible(PPDMIBLOCKBIOS pInterface)
427	{
428	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
429	return pThis->fBiosVisible;
430	}
431
432
433	/** @copydoc PDMIBLOCKBIOS::pfnGetType */
434	static DECLCALLBACK(PDMBLOCKTYPE) drvHostBaseBiosGetType(PPDMIBLOCKBIOS pInterface)
435	{
436	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
437	return pThis->enmType;
438	}
439
440
441
442	/* -=-=-=-=- IMount -=-=-=-=- */
443
444	/** @copydoc PDMIMOUNT::pfnMount */
445	static DECLCALLBACK(int) drvHostBaseMount(PPDMIMOUNT pInterface, const char pszFilename, const char pszCoreDriver)
446	{
447	/* We're not mountable. */
448	AssertMsgFailed(("drvHostBaseMount: This shouldn't be called!\n"));
449	return VERR_PDM_MEDIA_MOUNTED;
450	}
451
452
453	/** @copydoc PDMIMOUNT::pfnUnmount */
454	static DECLCALLBACK(int) drvHostBaseUnmount(PPDMIMOUNT pInterface, bool fForce)
455	{
456	LogFlow(("drvHostBaseUnmount: returns VERR_NOT_SUPPORTED\n"));
457	return VERR_NOT_SUPPORTED;
458	}
459
460
461	/** @copydoc PDMIMOUNT::pfnIsMounted */
462	static DECLCALLBACK(bool) drvHostBaseIsMounted(PPDMIMOUNT pInterface)
463	{
464	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
465	RTCritSectEnter(&pThis->CritSect);
466
467	bool fRc = pThis->fMediaPresent;
468
469	RTCritSectLeave(&pThis->CritSect);
470	return fRc;
471	}
472
473
474	/** @copydoc PDMIMOUNT::pfnIsLocked */
475	static DECLCALLBACK(int) drvHostBaseLock(PPDMIMOUNT pInterface)
476	{
477	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
478	RTCritSectEnter(&pThis->CritSect);
479
480	int rc = VINF_SUCCESS;
481	if (!pThis->fLocked)
482	{
483	if (pThis->pfnDoLock)
484	rc = pThis->pfnDoLock(pThis, true);
485	if (VBOX_SUCCESS(rc))
486	pThis->fLocked = true;
487	}
488	else
489	LogFlow(("%s-%d: drvHostBaseLock: already locked\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance));
490
491	RTCritSectLeave(&pThis->CritSect);
492	LogFlow(("%s-%d: drvHostBaseLock: returns %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc));
493	return rc;
494	}
495
496
497	/** @copydoc PDMIMOUNT::pfnIsLocked */
498	static DECLCALLBACK(int) drvHostBaseUnlock(PPDMIMOUNT pInterface)
499	{
500	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
501	RTCritSectEnter(&pThis->CritSect);
502
503	int rc = VINF_SUCCESS;
504	if (pThis->fLocked)
505	{
506	if (pThis->pfnDoLock)
507	rc = pThis->pfnDoLock(pThis, false);
508	if (VBOX_SUCCESS(rc))
509	pThis->fLocked = false;
510	}
511	else
512	LogFlow(("%s-%d: drvHostBaseUnlock: not locked\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance));
513
514	RTCritSectLeave(&pThis->CritSect);
515	LogFlow(("%s-%d: drvHostBaseUnlock: returns %Vrc\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, rc));
516	return rc;
517	}
518
519
520	/** @copydoc PDMIMOUNT::pfnIsLocked */
521	static DECLCALLBACK(bool) drvHostBaseIsLocked(PPDMIMOUNT pInterface)
522	{
523	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
524	RTCritSectEnter(&pThis->CritSect);
525
526	bool fRc = pThis->fLocked;
527
528	RTCritSectLeave(&pThis->CritSect);
529	return fRc;
530	}
531
532
533	/* -=-=-=-=- IBase -=-=-=-=- */
534
535	/** @copydoc PDMIBASE::pfnQueryInterface. */
536	static DECLCALLBACK(void *) drvHostBaseQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
537	{
538	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
539	PDRVHOSTBASE pThis = PDMINS2DATA(pDrvIns, PDRVHOSTBASE);
540	switch (enmInterface)
541	{
542	case PDMINTERFACE_BASE:
543	return &pDrvIns->IBase;
544	case PDMINTERFACE_BLOCK:
545	return &pThis->IBlock;
546	case PDMINTERFACE_BLOCK_BIOS:
547	return pThis->fBiosVisible ? &pThis->IBlockBios : NULL;
548	case PDMINTERFACE_MOUNT:
549	return &pThis->IMount;
550	default:
551	return NULL;
552	}
553	}
554
555
556	/* -=-=-=-=- poller thread -=-=-=-=- */
557
558	#ifdef RT_OS_DARWIN
559	/** The runloop input source name for the disk arbitration events. */
560	#define MY_RUN_LOOP_MODE CFSTR("drvHostBaseDA")
561
562	/**
563	* Gets the BSD Name (/dev/disc[0-9]+) for the service.
564	*
565	* This is done by recursing down the I/O registry until we hit upon an entry
566	* with a BSD Name. Usually we find it two levels down. (Further down under
567	* the IOCDPartitionScheme, the volume (slices) BSD Name is found. We don't
568	* seem to have to go this far fortunately.)
569	*
570	* @return VINF_SUCCESS if found, VERR_FILE_NOT_FOUND otherwise.
571	* @param Entry The current I/O registry entry reference.
572	* @param pszName Where to store the name. 128 bytes.
573	* @param cRecursions Number of recursions. This is used as an precation
574	* just to limit the depth and avoid blowing the stack
575	* should we hit a bug or something.
576	*/
577	static int drvHostBaseGetBSDName(io_registry_entry_t Entry, char *pszName, unsigned cRecursions)
578	{
579	int rc = VERR_FILE_NOT_FOUND;
580	io_iterator_t Children = 0;
581	kern_return_t krc = IORegistryEntryGetChildIterator(Entry, kIOServicePlane, &Children);
582	if (krc == KERN_SUCCESS)
583	{
584	io_object_t Child;
585	while ( rc == VERR_FILE_NOT_FOUND
586	&& (Child = IOIteratorNext(Children)) != 0)
587	{
588	CFStringRef BSDNameStrRef = (CFStringRef)IORegistryEntryCreateCFProperty(Child, CFSTR(kIOBSDNameKey), kCFAllocatorDefault, 0);
589	if (BSDNameStrRef)
590	{
591	if (CFStringGetCString(BSDNameStrRef, pszName, 128, kCFStringEncodingUTF8))
592	rc = VINF_SUCCESS;
593	else
594	AssertFailed();
595	CFRelease(BSDNameStrRef);
596	}
597	if (rc == VERR_FILE_NOT_FOUND && cRecursions < 10)
598	rc = drvHostBaseGetBSDName(Child, pszName, cRecursions + 1);
599	IOObjectRelease(Child);
600	}
601	IOObjectRelease(Children);
602	}
603	return rc;
604	}
605
606
607	/**
608	* Callback notifying us that the async DADiskClaim()/DADiskUnmount call has completed.
609	*
610	* @param DiskRef The disk that was attempted claimed / unmounted.
611	* @param DissenterRef NULL on success, contains details on failure.
612	* @param pvContext Pointer to the return code variable.
613	*/
614	static void drvHostBaseDADoneCallback(DADiskRef DiskRef, DADissenterRef DissenterRef, void *pvContext)
615	{
616	int prc = (int )pvContext;
617	if (!DissenterRef)
618	*prc = 0;
619	else
620	*prc = DADissenterGetStatus(DissenterRef) ? DADissenterGetStatus(DissenterRef) : -1;
621	CFRunLoopStop(CFRunLoopGetCurrent());
622	}
623
624
625	/**
626	* Obtain exclusive access to the DVD device, umount it if necessary.
627	*
628	* @return VBox status code.
629	* @param pThis The driver instance.
630	* @param DVDService The DVD service object.
631	*/
632	static int drvHostBaseObtainExclusiveAccess(PDRVHOSTBASE pThis, io_object_t DVDService)
633	{
634	PPDMDRVINS pDrvIns = pThis->pDrvIns; NOREF(pDrvIns);
635
636	for (unsigned iTry = 0;; iTry++)
637	{
638	IOReturn irc = (*pThis->ppScsiTaskDI)->ObtainExclusiveAccess(pThis->ppScsiTaskDI);
639	if (irc == kIOReturnSuccess)
640	{
641	/*
642	* This is a bit weird, but if we unmounted the DVD drive we also need to
643	* unlock it afterwards or the guest won't be able to eject it later on.
644	*/
645	if (pThis->pDADisk)
646	{
647	uint8_t abCmd[16] =
648	{
649	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, false, 0,
650	0,0,0,0,0,0,0,0,0,0
651	};
652	DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_NONE, NULL, NULL, NULL, 0, 0);
653	}
654	return VINF_SUCCESS;
655	}
656	if (irc == kIOReturnExclusiveAccess)
657	return VERR_SHARING_VIOLATION; /* already used exclusivly. */
658	if (irc != kIOReturnBusy)
659	return VERR_GENERAL_FAILURE; /* not mounted */
660
661	/*
662	* Attempt to the unmount all volumes of the device.
663	* It seems we can can do this all in one go without having to enumerate the
664	* volumes (sessions) and deal with them one by one. This is very fortuitous
665	* as the disk arbitration API is a bit cumbersome to deal with.
666	*/
667	if (iTry > 2)
668	return VERR_DRIVE_LOCKED;
669	char szName[128];
670	int rc = drvHostBaseGetBSDName(DVDService, &szName[0], 0);
671	if (VBOX_SUCCESS(rc))
672	{
673	pThis->pDASession = DASessionCreate(kCFAllocatorDefault);
674	if (pThis->pDASession)
675	{
676	DASessionScheduleWithRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
677	pThis->pDADisk = DADiskCreateFromBSDName(kCFAllocatorDefault, pThis->pDASession, szName);
678	if (pThis->pDADisk)
679	{
680	/*
681	* Try claim the device.
682	*/
683	Log(("%s-%d: calling DADiskClaim on '%s'.\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, szName));
684	int rcDA = -2;
685	DADiskClaim(pThis->pDADisk, kDADiskClaimOptionDefault, NULL, NULL, drvHostBaseDADoneCallback, &rcDA);
686	SInt32 rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
687	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
688	if ( rc32 == kCFRunLoopRunStopped
689	&& !rcDA)
690	{
691	/*
692	* Try unmount the device.
693	*/
694	Log(("%s-%d: calling DADiskUnmount on '%s'.\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, szName));
695	rcDA = -2;
696	DADiskUnmount(pThis->pDADisk, kDADiskUnmountOptionWhole, drvHostBaseDADoneCallback, &rcDA);
697	SInt32 rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
698	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
699	if ( rc32 == kCFRunLoopRunStopped
700	&& !rcDA)
701	{
702	iTry = 99;
703	DASessionUnscheduleFromRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
704	Log(("%s-%d: unmount succeed - retrying.\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
705	continue;
706	}
707	Log(("%s-%d: umount => rc32=%d & rcDA=%#x\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc32, rcDA));
708
709	/* failed - cleanup */
710	DADiskUnclaim(pThis->pDADisk);
711	}
712	else
713	Log(("%s-%d: claim => rc32=%d & rcDA=%#x\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc32, rcDA));
714
715	CFRelease(pThis->pDADisk);
716	pThis->pDADisk = NULL;
717	}
718	else
719	Log(("%s-%d: failed to open disk '%s'!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, szName));
720
721	DASessionUnscheduleFromRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
722	CFRelease(pThis->pDASession);
723	pThis->pDASession = NULL;
724	}
725	else
726	Log(("%s-%d: failed to create DA session!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
727	}
728	RTThreadSleep(10);
729	}
730	}
731	#endif /* RT_OS_DARWIN */
732
733
734	/**
735	* Wrapper for open / RTFileOpen / IOKit.
736	*
737	* @remark The Darwin code must correspond exactly to the enumeration
738	* done in Main/darwin/iokit.c.
739	*/
740	static int drvHostBaseOpen(PDRVHOSTBASE pThis, PRTFILE pFileDevice, bool fReadOnly)
741	{
742	#ifdef RT_OS_DARWIN
743	/* Darwin is kind of special... */
744	Assert(!pFileDevice); NOREF(pFileDevice);
745	Assert(!pThis->cbBlock);
746	Assert(!pThis->MasterPort);
747	Assert(!pThis->ppMMCDI);
748	Assert(!pThis->ppScsiTaskDI);
749
750	/*
751	* Open the master port on the first invocation.
752	*/
753	kern_return_t krc = IOMasterPort(MACH_PORT_NULL, &pThis->MasterPort);
754	AssertReturn(krc == KERN_SUCCESS, VERR_GENERAL_FAILURE);
755
756	/*
757	* Create a matching dictionary for searching for DVD services in the IOKit.
758	*
759	* [If I understand this correctly, plain CDROMs doesn't show up as
760	* IODVDServices. Too keep things simple, we will only support DVDs
761	* until somebody complains about it and we get hardware to test it on.
762	* (Unless I'm much mistaken, there aren't any (orignal) intel macs with
763	* plain cdroms.)]
764	*/
765	CFMutableDictionaryRef RefMatchingDict = IOServiceMatching("IODVDServices");
766	AssertReturn(RefMatchingDict, NULL);
767
768	/*
769	* do the search and get a collection of keyboards.
770	*/
771	io_iterator_t DVDServices = NULL;
772	IOReturn irc = IOServiceGetMatchingServices(pThis->MasterPort, RefMatchingDict, &DVDServices);
773	AssertMsgReturn(irc == kIOReturnSuccess, ("irc=%d\n", irc), NULL);
774	RefMatchingDict = NULL; /* the reference is consumed by IOServiceGetMatchingServices. */
775
776	/*
777	* Enumerate the DVD drives (services).
778	* (This enumeration must be identical to the one performed in DrvHostBase.cpp.)
779	*/
780	int rc = VERR_FILE_NOT_FOUND;
781	unsigned i = 0;
782	io_object_t DVDService;
783	while ((DVDService = IOIteratorNext(DVDServices)) != 0)
784	{
785	/*
786	* Get the properties we use to identify the DVD drive.
787	*
788	* While there is a (weird 12 byte) GUID, it isn't persistent
789	* accross boots. So, we have to use a combination of the
790	* vendor name and product name properties with an optional
791	* sequence number for identification.
792	*/
793	CFMutableDictionaryRef PropsRef = 0;
794	kern_return_t krc = IORegistryEntryCreateCFProperties(DVDService, &PropsRef, kCFAllocatorDefault, kNilOptions);
795	if (krc == KERN_SUCCESS)
796	{
797	/* Get the Device Characteristics dictionary. */
798	CFDictionaryRef DevCharRef = (CFDictionaryRef)CFDictionaryGetValue(PropsRef, CFSTR(kIOPropertyDeviceCharacteristicsKey));
799	if (DevCharRef)
800	{
801	/* The vendor name. */
802	char szVendor[128];
803	char *pszVendor = &szVendor[0];
804	CFTypeRef ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyVendorNameKey));
805	if ( ValueRef
806	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
807	&& CFStringGetCString((CFStringRef)ValueRef, szVendor, sizeof(szVendor), kCFStringEncodingUTF8))
808	pszVendor = RTStrStrip(szVendor);
809	else
810	*pszVendor = '\0';
811
812	/* The product name. */
813	char szProduct[128];
814	char *pszProduct = &szProduct[0];
815	ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyProductNameKey));
816	if ( ValueRef
817	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
818	&& CFStringGetCString((CFStringRef)ValueRef, szProduct, sizeof(szProduct), kCFStringEncodingUTF8))
819	pszProduct = RTStrStrip(szProduct);
820	else
821	*pszProduct = '\0';
822
823	/* Construct the two names and compare thwm with the one we're searching for. */
824	char szName1[256 + 32];
825	char szName2[256 + 32];
826	if (pszVendor \|\| pszProduct)
827	{
828	if (pszVendor && pszProduct)
829	{
830	RTStrPrintf(szName1, sizeof(szName1), "%s %s", pszVendor, pszProduct);
831	RTStrPrintf(szName2, sizeof(szName2), "%s %s (#%u)", pszVendor, pszProduct, i);
832	}
833	else
834	{
835	strcpy(szName1, *pszVendor ? pszVendor : pszProduct);
836	RTStrPrintf(szName2, sizeof(szName2), "%s %s (#%u)", *pszVendor ? pszVendor : pszProduct, i);
837	}
838	}
839	else
840	{
841	RTStrPrintf(szName1, sizeof(szName1), "(#%u)", i);
842	strcpy(szName2, szName1);
843	}
844
845	if ( !strcmp(szName1, pThis->pszDeviceOpen)
846	\|\| !strcmp(szName2, pThis->pszDeviceOpen))
847	{
848	/*
849	* Found it! Now, get the client interface and stuff.
850	* Note that we could also query kIOSCSITaskDeviceUserClientTypeID here if the
851	* MMC client plugin is missing. For now we assume this won't be necessary.
852	*/
853	SInt32 Score = 0;
854	IOCFPlugInInterface **ppPlugInInterface = NULL;
855	krc = IOCreatePlugInInterfaceForService(DVDService, kIOMMCDeviceUserClientTypeID, kIOCFPlugInInterfaceID,
856	&ppPlugInInterface, &Score);
857	if (krc == KERN_SUCCESS)
858	{
859	HRESULT hrc = (*ppPlugInInterface)->QueryInterface(ppPlugInInterface,
860	CFUUIDGetUUIDBytes(kIOMMCDeviceInterfaceID),
861	(LPVOID *)&pThis->ppMMCDI);
862	(*ppPlugInInterface)->Release(ppPlugInInterface);
863	ppPlugInInterface = NULL;
864	if (hrc == S_OK)
865	{
866	pThis->ppScsiTaskDI = (*pThis->ppMMCDI)->GetSCSITaskDeviceInterface(pThis->ppMMCDI);
867	if (pThis->ppScsiTaskDI)
868	rc = VINF_SUCCESS;
869	else
870	{
871	LogRel(("GetSCSITaskDeviceInterface failed on '%s'\n", pThis->pszDeviceOpen));
872	rc = VERR_NOT_SUPPORTED;
873	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
874	}
875	}
876	else
877	{
878	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinCOM(krc);
879	pThis->ppMMCDI = NULL;
880	}
881	}
882	else /* Check for kIOSCSITaskDeviceUserClientTypeID? */
883	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinKern(krc);
884
885	/* Obtain exclusive access to the device so we can send SCSI commands. */
886	if (VBOX_SUCCESS(rc))
887	rc = drvHostBaseObtainExclusiveAccess(pThis, DVDService);
888
889	/* Cleanup on failure. */
890	if (VBOX_FAILURE(rc))
891	{
892	if (pThis->ppScsiTaskDI)
893	{
894	(*pThis->ppScsiTaskDI)->Release(pThis->ppScsiTaskDI);
895	pThis->ppScsiTaskDI = NULL;
896	}
897	if (pThis->ppMMCDI)
898	{
899	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
900	pThis->ppMMCDI = NULL;
901	}
902	}
903
904	IOObjectRelease(DVDService);
905	break;
906	}
907	}
908	CFRelease(PropsRef);
909	}
910	else
911	AssertMsgFailed(("krc=%#x\n", krc));
912
913	IOObjectRelease(DVDService);
914	i++;
915	}
916
917	IOObjectRelease(DVDServices);
918	return rc;
919
920	#elif defined(RT_OS_LINUX)
921	/** @todo we've got RTFILE_O_NON_BLOCK now. Change the code to use RTFileOpen. */
922	int FileDevice = open(pThis->pszDeviceOpen, (pThis->fReadOnlyConfig ? O_RDONLY : O_RDWR) \| O_NONBLOCK);
923	if (FileDevice < 0)
924	return RTErrConvertFromErrno(errno);
925	*pFileDevice = FileDevice;
926	return VINF_SUCCESS;
927
928	#else
929	return RTFileOpen(pFileDevice, pThis->pszDeviceOpen,
930	(fReadOnly ? RTFILE_O_READ : RTFILE_O_READWRITE) \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
931	#endif
932	}
933
934
935	/**
936	* (Re)opens the device.
937	*
938	* This is used to open the device during construction, but it's also used to re-open
939	* the device when a media is inserted. This re-open will kill off any cached data
940	* that Linux for some peculiar reason thinks should survive a media change...
941	*
942	* @returns VBOX status code.
943	* @param pThis Instance data.
944	*/
945	static int drvHostBaseReopen(PDRVHOSTBASE pThis)
946	{
947	#ifndef RT_OS_DARWIN /* Only one open for darwin. */
948	LogFlow(("%s-%d: drvHostBaseReopen: '%s'\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->pszDeviceOpen));
949
950	RTFILE FileDevice;
951	int rc = drvHostBaseOpen(pThis, &FileDevice, pThis->fReadOnlyConfig);
952	if (VBOX_FAILURE(rc))
953	{
954	if (!pThis->fReadOnlyConfig)
955	{
956	LogFlow(("%s-%d: drvHostBaseReopen: '%s' - retry readonly (%Vrc)\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->pszDeviceOpen, rc));
957	rc = drvHostBaseOpen(pThis, &FileDevice, false);
958	}
959	if (VBOX_FAILURE(rc))
960	{
961	LogFlow(("%s-%d: failed to open device '%s', rc=%Vrc\n",
962	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->pszDevice, rc));
963	return rc;
964	}
965	pThis->fReadOnly = true;
966	}
967	else
968	pThis->fReadOnly = pThis->fReadOnlyConfig;
969
970	if (pThis->FileDevice != NIL_RTFILE)
971	RTFileClose(pThis->FileDevice);
972	pThis->FileDevice = FileDevice;
973	#endif /* !RT_OS_DARWIN */
974	return VINF_SUCCESS;
975	}
976
977
978	/**
979	* Queries the media size.
980	*
981	* @returns VBox status code.
982	* @param pThis Pointer to the instance data.
983	* @param pcb Where to store the media size in bytes.
984	*/
985	static int drvHostBaseGetMediaSize(PDRVHOSTBASE pThis, uint64_t *pcb)
986	{
987	#ifdef RT_OS_DARWIN
988	/*
989	* Try a READ_CAPACITY command...
990	*/
991	struct
992	{
993	uint32_t cBlocks;
994	uint32_t cbBlock;
995	} Buf = {0, 0};
996	size_t cbBuf = sizeof(Buf);
997	uint8_t abCmd[16] =
998	{
999	SCSI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
1000	0,0,0,0,0,0,0,0,0
1001	};
1002	int rc = DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_FROM_DEVICE, &Buf, &cbBuf, NULL, 0, 0);
1003	if (VBOX_SUCCESS(rc))
1004	{
1005	Assert(cbBuf == sizeof(Buf));
1006	Buf.cBlocks = RT_BE2H_U32(Buf.cBlocks);
1007	Buf.cbBlock = RT_BE2H_U32(Buf.cbBlock);
1008	//if (Buf.cbBlock > 2048) /* everyone else is doing this... check if it needed/right.*/
1009	// Buf.cbBlock = 2048;
1010	pThis->cbBlock = Buf.cbBlock;
1011
1012	pcb = (uint64_t)Buf.cBlocks Buf.cbBlock;
1013	}
1014	return rc;
1015
1016	#elif defined(RT_OS_WINDOWS)
1017	/* use NT api, retry a few times if the media is being verified. */
1018	IO_STATUS_BLOCK IoStatusBlock = {0};
1019	FILE_FS_SIZE_INFORMATION FsSize= {0};
1020	NTSTATUS rcNt = NtQueryVolumeInformationFile((HANDLE)pThis->FileDevice, &IoStatusBlock,
1021	&FsSize, sizeof(FsSize), FileFsSizeInformation);
1022	int cRetries = 5;
1023	while (rcNt == STATUS_VERIFY_REQUIRED && cRetries-- > 0)
1024	{
1025	RTThreadSleep(10);
1026	rcNt = NtQueryVolumeInformationFile((HANDLE)pThis->FileDevice, &IoStatusBlock,
1027	&FsSize, sizeof(FsSize), FileFsSizeInformation);
1028	}
1029	if (rcNt >= 0)
1030	{
1031	pcb = FsSize.TotalAllocationUnits.QuadPart FsSize.BytesPerSector;
1032	return VINF_SUCCESS;
1033	}
1034
1035	/* convert nt status code to VBox status code. */
1036	/** @todo Make convertion function!. */
1037	int rc = VERR_GENERAL_FAILURE;
1038	switch (rcNt)
1039	{
1040	case STATUS_NO_MEDIA_IN_DEVICE: rc = VERR_MEDIA_NOT_PRESENT; break;
1041	case STATUS_VERIFY_REQUIRED: rc = VERR_TRY_AGAIN; break;
1042	}
1043	LogFlow(("drvHostBaseGetMediaSize: NtQueryVolumeInformationFile -> %#lx\n", rcNt, rc));
1044	return rc;
1045	#else
1046	return RTFileSeek(pThis->FileDevice, 0, RTFILE_SEEK_END, pcb);
1047	#endif
1048	}
1049
1050
1051	#ifdef RT_OS_DARWIN
1052	/**
1053	* Execute a SCSI command.
1054	*
1055	* @param pThis The instance data.
1056	* @param pbCmd Pointer to the SCSI command.
1057	* @param cbCmd The size of the SCSI command.
1058	* @param enmTxDir The transfer direction.
1059	* @param pvBuf The buffer. Can be NULL if enmTxDir is PDMBLOCKTXDIR_NONE.
1060	* @param pcbBuf Where to get the buffer size from and put the actual transfer size. Can be NULL.
1061	* @param pbSense Where to put the sense data. Can be NULL.
1062	* @param cbSense Size of the sense data buffer.
1063	* @param cTimeoutMillies The timeout. 0 mean the default timeout.
1064	*
1065	* @returns VINF_SUCCESS on success (no sense code).
1066	* @returns VERR_UNRESOLVED_ERROR if sense code is present.
1067	* @returns Some other VBox status code on failures without sense code.
1068	*
1069	* @todo Fix VERR_UNRESOLVED_ERROR abuse.
1070	*/
1071	DECLCALLBACK(int) DRVHostBaseScsiCmd(PDRVHOSTBASE pThis, const uint8_t *pbCmd, size_t cbCmd, PDMBLOCKTXDIR enmTxDir,
1072	void pvBuf, size_t pcbBuf, uint8_t *pbSense, size_t cbSense, uint32_t cTimeoutMillies)
1073	{
1074	/*
1075	* Minimal input validation.
1076	*/
1077	Assert(enmTxDir == PDMBLOCKTXDIR_NONE \|\| enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE \|\| enmTxDir == PDMBLOCKTXDIR_TO_DEVICE);
1078	Assert(!pvBuf \|\| pcbBuf);
1079	Assert(pvBuf \|\| enmTxDir == PDMBLOCKTXDIR_NONE);
1080	Assert(pbSense \|\| !cbSense);
1081	AssertPtr(pbCmd);
1082	Assert(cbCmd <= 16 && cbCmd >= 1);
1083	const size_t cbBuf = pcbBuf ? *pcbBuf : 0;
1084	if (pcbBuf)
1085	*pcbBuf = 0;
1086
1087	# ifdef RT_OS_DARWIN
1088	Assert(pThis->ppScsiTaskDI);
1089
1090	int rc = VERR_GENERAL_FAILURE;
1091	SCSITaskInterface *ppScsiTaskI = (pThis->ppScsiTaskDI)->CreateSCSITask(pThis->ppScsiTaskDI);
1092	if (!ppScsiTaskI)
1093	return VERR_NO_MEMORY;
1094	do
1095	{
1096	/* Setup the scsi command. */
1097	SCSICommandDescriptorBlock cdb = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
1098	memcpy(&cdb[0], pbCmd, cbCmd);
1099	IOReturn irc = (*ppScsiTaskI)->SetCommandDescriptorBlock(ppScsiTaskI, cdb, cbCmd);
1100	AssertBreak(irc == kIOReturnSuccess,);
1101
1102	/* Setup the buffer. */
1103	if (enmTxDir == PDMBLOCKTXDIR_NONE)
1104	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, NULL, 0, 0, kSCSIDataTransfer_NoDataTransfer);
1105	else
1106	{
1107	IOVirtualRange Range = { (IOVirtualAddress)pvBuf, cbBuf };
1108	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, &Range, 1, cbBuf,
1109	enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE
1110	? kSCSIDataTransfer_FromTargetToInitiator
1111	: kSCSIDataTransfer_FromInitiatorToTarget);
1112	}
1113	AssertBreak(irc == kIOReturnSuccess,);
1114
1115	/* Set the timeout. */
1116	irc = (ppScsiTaskI)->SetTimeoutDuration(ppScsiTaskI, cTimeoutMillies ? cTimeoutMillies : 30000 /ms*/);
1117	AssertBreak(irc == kIOReturnSuccess,);
1118
1119	/* Execute the command and get the response. */
1120	SCSI_Sense_Data SenseData = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
1121	SCSIServiceResponse ServiceResponse = kSCSIServiceResponse_Request_In_Process;
1122	SCSITaskStatus TaskStatus = kSCSITaskStatus_GOOD;
1123	UInt64 cbReturned = 0;
1124	irc = (*ppScsiTaskI)->ExecuteTaskSync(ppScsiTaskI, &SenseData, &TaskStatus, &cbReturned);
1125	AssertBreak(irc == kIOReturnSuccess,);
1126	if (pcbBuf)
1127	*pcbBuf = cbReturned;
1128
1129	irc = (*ppScsiTaskI)->GetSCSIServiceResponse(ppScsiTaskI, &ServiceResponse);
1130	AssertBreak(irc == kIOReturnSuccess,);
1131	AssertBreak(ServiceResponse == kSCSIServiceResponse_TASK_COMPLETE,);
1132
1133	if (TaskStatus == kSCSITaskStatus_GOOD)
1134	rc = VINF_SUCCESS;
1135	else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
1136	&& pbSense)
1137	{
1138	memset(pbSense, 0, cbSense); /* lazy */
1139	memcpy(pbSense, &SenseData, RT_MIN(sizeof(SenseData), cbSense));
1140	rc = VERR_UNRESOLVED_ERROR;
1141	}
1142	/** @todo convert sense codes when caller doesn't wish to do this himself. */
1143	/*else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
1144	&& SenseData.ADDITIONAL_SENSE_CODE == 0x3A)
1145	rc = VERR_MEDIA_NOT_PRESENT; */
1146	else
1147	{
1148	rc = enmTxDir == PDMBLOCKTXDIR_NONE
1149	? VERR_DEV_IO_ERROR
1150	: enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE
1151	? VERR_READ_ERROR
1152	: VERR_WRITE_ERROR;
1153	if (pThis->cLogRelErrors++ < 10)
1154	LogRel(("DVD scsi error: cmd={%.*Rhxs} TaskStatus=%#x key=%#x ASC=%#x ASCQ=%#x (%Vrc)\n",
1155	cbCmd, pbCmd, TaskStatus, SenseData.SENSE_KEY, SenseData.ADDITIONAL_SENSE_CODE,
1156	SenseData.ADDITIONAL_SENSE_CODE_QUALIFIER, rc));
1157	}
1158	} while (0);
1159
1160	(*ppScsiTaskI)->Release(ppScsiTaskI);
1161
1162	# endif
1163
1164	return rc;
1165	}
1166	#endif
1167
1168
1169	/**
1170	* Media present.
1171	* Query the size and notify the above driver / device.
1172	*
1173	* @param pThis The instance data.
1174	*/
1175	int DRVHostBaseMediaPresent(PDRVHOSTBASE pThis)
1176	{
1177	/*
1178	* Open the drive.
1179	*/
1180	int rc = drvHostBaseReopen(pThis);
1181	if (VBOX_FAILURE(rc))
1182	return rc;
1183
1184	/*
1185	* Determin the size.
1186	*/
1187	uint64_t cb;
1188	rc = pThis->pfnGetMediaSize(pThis, &cb);
1189	if (VBOX_FAILURE(rc))
1190	{
1191	LogFlow(("%s-%d: failed to figure media size of %s, rc=%Vrc\n",
1192	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->pszDevice, rc));
1193	return rc;
1194	}
1195
1196	/*
1197	* Update the data and inform the unit.
1198	*/
1199	pThis->cbSize = cb;
1200	pThis->fMediaPresent = true;
1201	if (pThis->pDrvMountNotify)
1202	pThis->pDrvMountNotify->pfnMountNotify(pThis->pDrvMountNotify);
1203	LogFlow(("%s-%d: drvHostBaseMediaPresent: cbSize=%lld (%#llx)\n",
1204	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, pThis->cbSize, pThis->cbSize));
1205	return VINF_SUCCESS;
1206	}
1207
1208
1209	/**
1210	* Media no longer present.
1211	* @param pThis The instance data.
1212	*/
1213	void DRVHostBaseMediaNotPresent(PDRVHOSTBASE pThis)
1214	{
1215	pThis->fMediaPresent = false;
1216	pThis->fLocked = false;
1217	pThis->fTranslationSet = false;
1218	pThis->cSectors = 0;
1219	if (pThis->pDrvMountNotify)
1220	pThis->pDrvMountNotify->pfnUnmountNotify(pThis->pDrvMountNotify);
1221	}
1222
1223
1224	#ifdef RT_OS_WINDOWS
1225
1226	/**
1227	* Window procedure for the invisible window used to catch the WM_DEVICECHANGE broadcasts.
1228	*/
1229	static LRESULT CALLBACK DeviceChangeWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1230	{
1231	Log2(("DeviceChangeWindowProc: hwnd=%08x uMsg=%08x\n", hwnd, uMsg));
1232	if (uMsg == WM_DESTROY)
1233	{
1234	PDRVHOSTBASE pThis = (PDRVHOSTBASE)GetWindowLong(hwnd, GWLP_USERDATA);
1235	if (pThis)
1236	ASMAtomicXchgSize(&pThis->hwndDeviceChange, NULL);
1237	PostQuitMessage(0);
1238	}
1239
1240	if (uMsg != WM_DEVICECHANGE)
1241	return DefWindowProc(hwnd, uMsg, wParam, lParam);
1242
1243	PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
1244	PDRVHOSTBASE pThis = (PDRVHOSTBASE)GetWindowLongPtr(hwnd, GWLP_USERDATA);
1245	Assert(pThis);
1246	if (pThis == NULL)
1247	return 0;
1248
1249	switch (wParam)
1250	{
1251	case DBT_DEVICEARRIVAL:
1252	case DBT_DEVICEREMOVECOMPLETE:
1253	// Check whether a CD or DVD was inserted into or removed from a drive.
1254	if (lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME)
1255	{
1256	PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
1257	if ( (lpdbv->dbcv_flags & DBTF_MEDIA)
1258	&& (pThis->fUnitMask & lpdbv->dbcv_unitmask))
1259	{
1260	RTCritSectEnter(&pThis->CritSect);
1261	if (wParam == DBT_DEVICEARRIVAL)
1262	{
1263	int cRetries = 10;
1264	int rc = DRVHostBaseMediaPresent(pThis);
1265	while (VBOX_FAILURE(rc) && cRetries-- > 0)
1266	{
1267	RTThreadSleep(50);
1268	rc = DRVHostBaseMediaPresent(pThis);
1269	}
1270	}
1271	else
1272	DRVHostBaseMediaNotPresent(pThis);
1273	RTCritSectLeave(&pThis->CritSect);
1274	}
1275	}
1276	break;
1277	}
1278	return TRUE;
1279	}
1280
1281	#endif /* RT_OS_WINDOWS */
1282
1283
1284	/**
1285	* This thread will periodically poll the device for media presence.
1286	*
1287	* @returns Ignored.
1288	* @param ThreadSelf Handle of this thread. Ignored.
1289	* @param pvUser Pointer to the driver instance structure.
1290	*/
1291	static DECLCALLBACK(int) drvHostBaseMediaThread(RTTHREAD ThreadSelf, void *pvUser)
1292	{
1293	PDRVHOSTBASE pThis = (PDRVHOSTBASE)pvUser;
1294	LogFlow(("%s-%d: drvHostBaseMediaThread: ThreadSelf=%p pvUser=%p\n",
1295	pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, ThreadSelf, pvUser));
1296	#ifdef RT_OS_WINDOWS
1297	static WNDCLASS s_classDeviceChange = {0};
1298	static ATOM s_hAtomDeviceChange = 0;
1299
1300	/*
1301	* Register custom window class.
1302	*/
1303	if (s_hAtomDeviceChange == 0)
1304	{
1305	memset(&s_classDeviceChange, 0, sizeof(s_classDeviceChange));
1306	s_classDeviceChange.lpfnWndProc = DeviceChangeWindowProc;
1307	s_classDeviceChange.lpszClassName = "VBOX_DeviceChangeClass";
1308	s_classDeviceChange.hInstance = GetModuleHandle("VBOXDD.DLL");
1309	Assert(s_classDeviceChange.hInstance);
1310	s_hAtomDeviceChange = RegisterClassA(&s_classDeviceChange);
1311	Assert(s_hAtomDeviceChange);
1312	}
1313
1314	/*
1315	* Create Window w/ the pThis as user data.
1316	*/
1317	HWND hwnd = CreateWindow((LPCTSTR)s_hAtomDeviceChange, "", WS_POPUP, 0, 0, 0, 0, 0, 0, s_classDeviceChange.hInstance, 0);
1318	AssertMsg(hwnd, ("CreateWindow failed with %d\n", GetLastError()));
1319	SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)pThis);
1320
1321	/*
1322	* Signal the waiting EMT thread that everything went fine.
1323	*/
1324	ASMAtomicXchgSize(&pThis->hwndDeviceChange, hwnd);
1325	RTThreadUserSignal(ThreadSelf);
1326	if (!hwnd)
1327	{
1328	LogFlow(("%s-%d: drvHostBaseMediaThread: returns VERR_GENERAL_FAILURE\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance));
1329	return VERR_GENERAL_FAILURE;
1330	}
1331	LogFlow(("%s-%d: drvHostBaseMediaThread: Created hwndDeviceChange=%p\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance, hwnd));
1332
1333	/*
1334	* Message pump.
1335	*/
1336	MSG Msg;
1337	BOOL fRet;
1338	while ((fRet = GetMessage(&Msg, NULL, 0, 0)) != FALSE)
1339	{
1340	if (fRet != -1)
1341	{
1342	TranslateMessage(&Msg);
1343	DispatchMessage(&Msg);
1344	}
1345	//else: handle the error and possibly exit
1346	}
1347	Assert(!pThis->hwndDeviceChange);
1348
1349	#else /* !RT_OS_WINDOWS */
1350	bool fFirst = true;
1351	int cRetries = 10;
1352	while (!pThis->fShutdownPoller)
1353	{
1354	/*
1355	* Perform the polling (unless we've run out of 50ms retries).
1356	*/
1357	if ( pThis->pfnPoll
1358	&& cRetries-- > 0)
1359	{
1360
1361	int rc = pThis->pfnPoll(pThis);
1362	if (VBOX_FAILURE(rc))
1363	{
1364	RTSemEventWait(pThis->EventPoller, 50);
1365	continue;
1366	}
1367	}
1368
1369	/*
1370	* Signal EMT after the first go.
1371	*/
1372	if (fFirst)
1373	{
1374	RTThreadUserSignal(ThreadSelf);
1375	fFirst = false;
1376	}
1377
1378	/*
1379	* Sleep.
1380	*/
1381	int rc = RTSemEventWait(pThis->EventPoller, pThis->cMilliesPoller);
1382	if ( VBOX_FAILURE(rc)
1383	&& rc != VERR_TIMEOUT)
1384	{
1385	AssertMsgFailed(("rc=%Vrc\n", rc));
1386	pThis->ThreadPoller = NIL_RTTHREAD;
1387	LogFlow(("drvHostBaseMediaThread: returns %Vrc\n", rc));
1388	return rc;
1389	}
1390	cRetries = 10;
1391	}
1392
1393	#endif /* !RT_OS_WINDOWS */
1394
1395	/* (Don't clear the thread handle here, the destructor thread is using it to wait.) */
1396	LogFlow(("%s-%d: drvHostBaseMediaThread: returns VINF_SUCCESS\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance));
1397	return VINF_SUCCESS;
1398	}
1399
1400	/* -=-=-=-=- driver interface -=-=-=-=- */
1401
1402
1403	/**
1404	* Done state load operation.
1405	*
1406	* @returns VBox load code.
1407	* @param pDrvIns Driver instance of the driver which registered the data unit.
1408	* @param pSSM SSM operation handle.
1409	*/
1410	static DECLCALLBACK(int) drvHostBaseLoadDone(PPDMDRVINS pDrvIns, PSSMHANDLE pSSM)
1411	{
1412	PDRVHOSTBASE pThis = PDMINS2DATA(pDrvIns, PDRVHOSTBASE);
1413	LogFlow(("%s-%d: drvHostBaseMediaThread:\n", pThis->pDrvIns->pDrvReg->szDriverName, pThis->pDrvIns->iInstance));
1414	RTCritSectEnter(&pThis->CritSect);
1415
1416	/*
1417	* Tell the device/driver above us that the media status is uncertain.
1418	*/
1419	if (pThis->pDrvMountNotify)
1420	{
1421	pThis->pDrvMountNotify->pfnUnmountNotify(pThis->pDrvMountNotify);
1422	if (pThis->fMediaPresent)
1423	pThis->pDrvMountNotify->pfnMountNotify(pThis->pDrvMountNotify);
1424	}
1425
1426	RTCritSectLeave(&pThis->CritSect);
1427	return VINF_SUCCESS;
1428	}
1429
1430
1431	/** @copydoc FNPDMDRVDESTRUCT */
1432	DECLCALLBACK(void) DRVHostBaseDestruct(PPDMDRVINS pDrvIns)
1433	{
1434	PDRVHOSTBASE pThis = PDMINS2DATA(pDrvIns, PDRVHOSTBASE);
1435	LogFlow(("%s-%d: drvHostBaseDestruct: iInstance=%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pDrvIns->iInstance));
1436
1437	/*
1438	* Terminate the thread.
1439	*/
1440	if (pThis->ThreadPoller != NIL_RTTHREAD)
1441	{
1442	pThis->fShutdownPoller = true;
1443	int rc;
1444	int cTimes = 50;
1445	do
1446	{
1447	#ifdef RT_OS_WINDOWS
1448	if (pThis->hwndDeviceChange)
1449	PostMessage(pThis->hwndDeviceChange, WM_CLOSE, 0, 0); /* default win proc will destroy the window */
1450	#else
1451	RTSemEventSignal(pThis->EventPoller);
1452	#endif
1453	rc = RTThreadWait(pThis->ThreadPoller, 100, NULL);
1454	} while (cTimes-- > 0 && rc == VERR_TIMEOUT);
1455
1456	if (!rc)
1457	pThis->ThreadPoller = NIL_RTTHREAD;
1458	}
1459
1460	/*
1461	* Unlock the drive if we've locked it or we're in passthru mode.
1462	*/
1463	#ifdef RT_OS_DARWIN
1464	if ( ( pThis->fLocked
1465	\|\| pThis->IBlock.pfnSendCmd)
1466	&& pThis->ppScsiTaskDI
1467	#else /** @todo Check if the other guys can mix pfnDoLock with scsi passthru.
1468	* (We're currently not unlocking the device after use. See todo in DevATA.cpp.) */
1469	if ( pThis->fLocked
1470	&& pThis->FileDevice != NIL_RTFILE
1471	#endif
1472	&& pThis->pfnDoLock)
1473	{
1474	int rc = pThis->pfnDoLock(pThis, false);
1475	if (VBOX_SUCCESS(rc))
1476	pThis->fLocked = false;
1477	}
1478
1479	/*
1480	* Cleanup the other resources.
1481	*/
1482	#ifdef RT_OS_WINDOWS
1483	if (pThis->hwndDeviceChange)
1484	{
1485	if (SetWindowLongPtr(pThis->hwndDeviceChange, GWLP_USERDATA, 0) == (LONG_PTR)pThis)
1486	PostMessage(pThis->hwndDeviceChange, WM_CLOSE, 0, 0); /* default win proc will destroy the window */
1487	pThis->hwndDeviceChange = NULL;
1488	}
1489	#else
1490	if (pThis->EventPoller != NULL)
1491	{
1492	RTSemEventDestroy(pThis->EventPoller);
1493	pThis->EventPoller = NULL;
1494	}
1495	#endif
1496
1497	#ifdef RT_OS_DARWIN
1498	/*
1499	* The unclaiming doesn't seem to mean much, the DVD is actaully
1500	* remounted when we release exclusive access. I'm not quite sure
1501	* if I should put the unclaim first or not...
1502	*
1503	* Anyway, that it's automatically remounted very good news for us,
1504	* because that means we don't have to mess with that ourselves. Of
1505	* course there is the unlikely scenario that we've succeeded in claiming
1506	* and umount the DVD but somehow failed to gain exclusive scsi access...
1507	*/
1508	if (pThis->ppScsiTaskDI)
1509	{
1510	LogFlow(("%s-%d: releasing exclusive scsi access!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
1511	(*pThis->ppScsiTaskDI)->ReleaseExclusiveAccess(pThis->ppScsiTaskDI);
1512	(*pThis->ppScsiTaskDI)->Release(pThis->ppScsiTaskDI);
1513	pThis->ppScsiTaskDI = NULL;
1514	}
1515	if (pThis->pDADisk)
1516	{
1517	LogFlow(("%s-%d: unclaiming the disk!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
1518	DADiskUnclaim(pThis->pDADisk);
1519	CFRelease(pThis->pDADisk);
1520	pThis->pDADisk = NULL;
1521	}
1522	if (pThis->ppMMCDI)
1523	{
1524	LogFlow(("%s-%d: releasing the MMC object!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
1525	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
1526	pThis->ppMMCDI = NULL;
1527	}
1528	if (pThis->MasterPort)
1529	{
1530	mach_port_deallocate(mach_task_self(), pThis->MasterPort);
1531	pThis->MasterPort = NULL;
1532	}
1533	if (pThis->pDASession)
1534	{
1535	LogFlow(("%s-%d: releasing the DA session!\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
1536	CFRelease(pThis->pDASession);
1537	pThis->pDASession = NULL;
1538	}
1539	#else
1540	if (pThis->FileDevice != NIL_RTFILE)
1541	{
1542	int rc = RTFileClose(pThis->FileDevice);
1543	AssertRC(rc);
1544	pThis->FileDevice = NIL_RTFILE;
1545	}
1546	#endif
1547
1548	if (pThis->pszDevice)
1549	{
1550	MMR3HeapFree(pThis->pszDevice);
1551	pThis->pszDevice = NULL;
1552	}
1553
1554	if (pThis->pszDeviceOpen)
1555	{
1556	RTStrFree(pThis->pszDeviceOpen);
1557	pThis->pszDeviceOpen = NULL;
1558	}
1559
1560	/* Forget about the notifications. */
1561	pThis->pDrvMountNotify = NULL;
1562
1563	/* Leave the instance operational if this is just a cleanup of the state
1564	* after an attach error happened. So don't destry the critsect then. */
1565	if (!pThis->fKeepInstance && RTCritSectIsInitialized(&pThis->CritSect))
1566	RTCritSectDelete(&pThis->CritSect);
1567	LogFlow(("%s-%d: drvHostBaseDestruct completed\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
1568	}
1569
1570
1571	/**
1572	* Initializes the instance data (init part 1).
1573	*
1574	* The driver which derives from this base driver will override function pointers after
1575	* calling this method, and complete the construction by calling DRVHostBaseInitFinish().
1576	*
1577	* On failure call DRVHostBaseDestruct().
1578	*
1579	* @returns VBox status code.
1580	* @param pDrvIns Driver instance.
1581	* @param pCfgHandle Configuration handle.
1582	* @param enmType Device type.
1583	*/
1584	int DRVHostBaseInitData(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle, PDMBLOCKTYPE enmType)
1585	{
1586	PDRVHOSTBASE pThis = PDMINS2DATA(pDrvIns, PDRVHOSTBASE);
1587	LogFlow(("%s-%d: DRVHostBaseInitData: iInstance=%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pDrvIns->iInstance));
1588
1589	/*
1590	* Initialize most of the data members.
1591	*/
1592	pThis->pDrvIns = pDrvIns;
1593	pThis->fKeepInstance = false;
1594	pThis->ThreadPoller = NIL_RTTHREAD;
1595	#ifdef RT_OS_DARWIN
1596	pThis->MasterPort = NULL;
1597	pThis->ppMMCDI = NULL;
1598	pThis->ppScsiTaskDI = NULL;
1599	pThis->cbBlock = 0;
1600	pThis->pDADisk = NULL;
1601	pThis->pDASession = NULL;
1602	#else
1603	pThis->FileDevice = NIL_RTFILE;
1604	#endif
1605	pThis->enmType = enmType;
1606	//pThis->cErrors = 0;
1607
1608	pThis->pfnGetMediaSize = drvHostBaseGetMediaSize;
1609
1610	/* IBase. */
1611	pDrvIns->IBase.pfnQueryInterface = drvHostBaseQueryInterface;
1612
1613	/* IBlock. */
1614	pThis->IBlock.pfnRead = drvHostBaseRead;
1615	pThis->IBlock.pfnWrite = drvHostBaseWrite;
1616	pThis->IBlock.pfnFlush = drvHostBaseFlush;
1617	pThis->IBlock.pfnIsReadOnly = drvHostBaseIsReadOnly;
1618	pThis->IBlock.pfnGetSize = drvHostBaseGetSize;
1619	pThis->IBlock.pfnGetType = drvHostBaseGetType;
1620	pThis->IBlock.pfnGetUuid = drvHostBaseGetUuid;
1621
1622	/* IBlockBios. */
1623	pThis->IBlockBios.pfnGetGeometry = drvHostBaseGetGeometry;
1624	pThis->IBlockBios.pfnSetGeometry = drvHostBaseSetGeometry;
1625	pThis->IBlockBios.pfnGetTranslation = drvHostBaseGetTranslation;
1626	pThis->IBlockBios.pfnSetTranslation = drvHostBaseSetTranslation;
1627	pThis->IBlockBios.pfnIsVisible = drvHostBaseIsVisible;
1628	pThis->IBlockBios.pfnGetType = drvHostBaseBiosGetType;
1629
1630	/* IMount. */
1631	pThis->IMount.pfnMount = drvHostBaseMount;
1632	pThis->IMount.pfnUnmount = drvHostBaseUnmount;
1633	pThis->IMount.pfnIsMounted = drvHostBaseIsMounted;
1634	pThis->IMount.pfnLock = drvHostBaseLock;
1635	pThis->IMount.pfnUnlock = drvHostBaseUnlock;
1636	pThis->IMount.pfnIsLocked = drvHostBaseIsLocked;
1637
1638	/*
1639	* Get the IBlockPort & IMountNotify interfaces of the above driver/device.
1640	*/
1641	pThis->pDrvBlockPort = (PPDMIBLOCKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_BLOCK_PORT);
1642	if (!pThis->pDrvBlockPort)
1643	{
1644	AssertMsgFailed(("Configuration error: No block port interface above!\n"));
1645	return VERR_PDM_MISSING_INTERFACE_ABOVE;
1646	}
1647	pThis->pDrvMountNotify = (PPDMIMOUNTNOTIFY)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_MOUNT_NOTIFY);
1648
1649	/*
1650	* Query configuration.
1651	*/
1652	/* Device */
1653	int rc = CFGMR3QueryStringAlloc(pCfgHandle, "Path", &pThis->pszDevice);
1654	if (VBOX_FAILURE(rc))
1655	{
1656	AssertMsgFailed(("Configuration error: query for \"Path\" string returned %Vra.\n", rc));
1657	return rc;
1658	}
1659
1660	/* Mountable */
1661	uint32_t u32;
1662	rc = CFGMR3QueryU32(pCfgHandle, "Interval", &u32);
1663	if (VBOX_SUCCESS(rc))
1664	pThis->cMilliesPoller = u32;
1665	else if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1666	pThis->cMilliesPoller = 1000;
1667	else if (VBOX_FAILURE(rc))
1668	{
1669	AssertMsgFailed(("Configuration error: Query \"Mountable\" resulted in %Vrc.\n", rc));
1670	return rc;
1671	}
1672
1673	/* ReadOnly */
1674	rc = CFGMR3QueryBool(pCfgHandle, "ReadOnly", &pThis->fReadOnlyConfig);
1675	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1676	pThis->fReadOnlyConfig = enmType == PDMBLOCKTYPE_DVD \|\| enmType == PDMBLOCKTYPE_CDROM ? true : false;
1677	else if (VBOX_FAILURE(rc))
1678	{
1679	AssertMsgFailed(("Configuration error: Query \"ReadOnly\" resulted in %Vrc.\n", rc));
1680	return rc;
1681	}
1682
1683	/* Locked */
1684	rc = CFGMR3QueryBool(pCfgHandle, "Locked", &pThis->fLocked);
1685	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1686	pThis->fLocked = false;
1687	else if (VBOX_FAILURE(rc))
1688	{
1689	AssertMsgFailed(("Configuration error: Query \"Locked\" resulted in %Vrc.\n", rc));
1690	return rc;
1691	}
1692
1693	/* BIOS visible */
1694	rc = CFGMR3QueryBool(pCfgHandle, "BIOSVisible", &pThis->fBiosVisible);
1695	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1696	pThis->fBiosVisible = true;
1697	else if (VBOX_FAILURE(rc))
1698	{
1699	AssertMsgFailed(("Configuration error: Query \"BIOSVisible\" resulted in %Vrc.\n", rc));
1700	return rc;
1701	}
1702
1703	/* Uuid */
1704	char *psz;
1705	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Uuid", &psz);
1706	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1707	RTUuidClear(&pThis->Uuid);
1708	else if (VBOX_SUCCESS(rc))
1709	{
1710	rc = RTUuidFromStr(&pThis->Uuid, psz);
1711	if (VBOX_FAILURE(rc))
1712	{
1713	AssertMsgFailed(("Configuration error: Uuid from string failed on \"%s\", rc=%Vrc.\n", psz, rc));
1714	MMR3HeapFree(psz);
1715	return rc;
1716	}
1717	MMR3HeapFree(psz);
1718	}
1719	else
1720	{
1721	AssertMsgFailed(("Configuration error: Failed to obtain the uuid, rc=%Vrc.\n", rc));
1722	return rc;
1723	}
1724
1725	/* Define whether attach failure is an error (default) or not. */
1726	bool fAttachFailError;
1727	rc = CFGMR3QueryBool(pCfgHandle, "AttachFailError", &fAttachFailError);
1728	if (VBOX_FAILURE(rc))
1729	fAttachFailError = true;
1730	pThis->fAttachFailError = fAttachFailError;
1731
1732	/* name to open & watch for */
1733	#ifdef RT_OS_WINDOWS
1734	int iBit = toupper(pThis->pszDevice[0]) - 'A';
1735	if ( iBit > 'Z' - 'A'
1736	\|\| pThis->pszDevice[1] != ':'
1737	\|\| pThis->pszDevice[2])
1738	{
1739	AssertMsgFailed(("Configuration error: Invalid drive specification: '%s'\n", pThis->pszDevice));
1740	return VERR_INVALID_PARAMETER;
1741	}
1742	pThis->fUnitMask = 1 << iBit;
1743	RTStrAPrintf(&pThis->pszDeviceOpen, "\\\\.\\%s", pThis->pszDevice);
1744	#else
1745	pThis->pszDeviceOpen = RTStrDup(pThis->pszDevice);
1746	#endif
1747	if (!pThis->pszDeviceOpen)
1748	return VERR_NO_MEMORY;
1749
1750	return VINF_SUCCESS;
1751	}
1752
1753
1754	/**
1755	* Do the 2nd part of the init after the derived driver has overridden the defaults.
1756	*
1757	* On failure call DRVHostBaseDestruct().
1758	*
1759	* @returns VBox status code.
1760	* @param pThis Pointer to the instance data.
1761	*/
1762	int DRVHostBaseInitFinish(PDRVHOSTBASE pThis)
1763	{
1764	int src = VINF_SUCCESS;
1765	PPDMDRVINS pDrvIns = pThis->pDrvIns;
1766
1767	/* log config summary */
1768	Log(("%s-%d: pszDevice='%s' (%s) cMilliesPoller=%d fReadOnlyConfig=%d fLocked=%d fBIOSVisible=%d Uuid=%Vuuid\n",
1769	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pThis->pszDevice, pThis->pszDeviceOpen, pThis->cMilliesPoller,
1770	pThis->fReadOnlyConfig, pThis->fLocked, pThis->fBiosVisible, &pThis->Uuid));
1771
1772	/*
1773	* Check that there are no drivers below us.
1774	*/
1775	PPDMIBASE pBase;
1776	int rc = pDrvIns->pDrvHlp->pfnAttach(pDrvIns, &pBase);
1777	if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
1778	{
1779	AssertMsgFailed(("Configuration error: No attached driver, please! (rc=%Vrc)\n", rc));
1780	return VERR_PDM_DRVINS_NO_ATTACH;
1781	}
1782
1783	/*
1784	* Register saved state.
1785	*/
1786	rc = pDrvIns->pDrvHlp->pfnSSMRegister(pDrvIns, pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, 1, 0,
1787	NULL, NULL, NULL,
1788	NULL, NULL, drvHostBaseLoadDone);
1789	if (VBOX_FAILURE(rc))
1790	return rc;
1791
1792	/*
1793	* Verify type.
1794	*/
1795	#ifdef RT_OS_WINDOWS
1796	UINT uDriveType = GetDriveType(pThis->pszDevice);
1797	switch (pThis->enmType)
1798	{
1799	case PDMBLOCKTYPE_FLOPPY_360:
1800	case PDMBLOCKTYPE_FLOPPY_720:
1801	case PDMBLOCKTYPE_FLOPPY_1_20:
1802	case PDMBLOCKTYPE_FLOPPY_1_44:
1803	case PDMBLOCKTYPE_FLOPPY_2_88:
1804	if (uDriveType != DRIVE_REMOVABLE)
1805	{
1806	AssertMsgFailed(("Configuration error: '%s' is not a floppy (type=%d)\n",
1807	pThis->pszDevice, uDriveType));
1808	return VERR_INVALID_PARAMETER;
1809	}
1810	break;
1811	case PDMBLOCKTYPE_CDROM:
1812	case PDMBLOCKTYPE_DVD:
1813	if (uDriveType != DRIVE_CDROM)
1814	{
1815	AssertMsgFailed(("Configuration error: '%s' is not a cdrom (type=%d)\n",
1816	pThis->pszDevice, uDriveType));
1817	return VERR_INVALID_PARAMETER;
1818	}
1819	break;
1820	case PDMBLOCKTYPE_HARD_DISK:
1821	default:
1822	AssertMsgFailed(("enmType=%d\n", pThis->enmType));
1823	return VERR_INVALID_PARAMETER;
1824	}
1825	#endif
1826
1827	/*
1828	* Open the device.
1829	*/
1830	#ifdef RT_OS_DARWIN
1831	rc = drvHostBaseOpen(pThis, NULL, pThis->fReadOnlyConfig);
1832	#else
1833	rc = drvHostBaseReopen(pThis);
1834	#endif
1835	if (VBOX_FAILURE(rc))
1836	{
1837	char *pszDevice = pThis->pszDevice;
1838	#ifndef RT_OS_DARWIN
1839	char szPathReal[256];
1840	if ( RTPathExists(pszDevice)
1841	&& RT_SUCCESS(RTPathReal(pszDevice, szPathReal, sizeof(szPathReal))))
1842	pszDevice = szPathReal;
1843	pThis->FileDevice = NIL_RTFILE;
1844	#endif
1845	/* Disable CD/DVD passthrough in case it was enabled. Would cause
1846	* weird failures later when the guest issues commands. These would
1847	* all fail because of the invalid file handle. So use the normal
1848	* virtual CD/DVD code, which deals more gracefully with unavailable
1849	* "media" - actually a complete drive in this case. */
1850	pThis->IBlock.pfnSendCmd = NULL;
1851	AssertMsgFailed(("Could not open host device %s, rc=%Vrc\n", pszDevice, rc));
1852	switch (rc)
1853	{
1854	case VERR_ACCESS_DENIED:
1855	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1856	#ifdef RT_OS_LINUX
1857	N_("Cannot open host device '%s' for %s access. Check the permissions "
1858	"of that device ('/bin/ls -l %s'): Most probably you need to be member "
1859	"of the device group. Make sure that you logout/login after changing "
1860	"the group settings of the current user"),
1861	#else
1862	N_("Cannot open host device '%s' for %s access. Check the permissions "
1863	"of that device"),
1864	#endif
1865	pszDevice, pThis->fReadOnlyConfig ? "readonly" : "read/write",
1866	pszDevice);
1867	default:
1868	{
1869	if (pThis->fAttachFailError)
1870	return rc;
1871	int erc = PDMDrvHlpVMSetRuntimeError(pDrvIns,
1872	false, "DrvHost_MOUNTFAIL",
1873	N_("Cannot attach to host device '%s'"), pszDevice);
1874	AssertRC(erc);
1875	src = rc;
1876	}
1877	}
1878	}
1879	#ifdef RT_OS_WINDOWS
1880	if (VBOX_SUCCESS(src))
1881	DRVHostBaseMediaPresent(pThis);
1882	#endif
1883
1884	/*
1885	* Lock the drive if that's required by the configuration.
1886	*/
1887	if (pThis->fLocked)
1888	{
1889	if (pThis->pfnDoLock)
1890	rc = pThis->pfnDoLock(pThis, true);
1891	if (VBOX_FAILURE(rc))
1892	{
1893	AssertMsgFailed(("Failed to lock the dvd drive. rc=%Vrc\n", rc));
1894	return rc;
1895	}
1896	}
1897
1898	#ifndef RT_OS_WINDOWS
1899	if (VBOX_SUCCESS(src))
1900	{
1901	/*
1902	* Create the event semaphore which the poller thread will wait on.
1903	*/
1904	rc = RTSemEventCreate(&pThis->EventPoller);
1905	if (VBOX_FAILURE(rc))
1906	return rc;
1907	}
1908	#endif
1909
1910	/*
1911	* Initialize the critical section used for serializing the access to the media.
1912	*/
1913	rc = RTCritSectInit(&pThis->CritSect);
1914	if (VBOX_FAILURE(rc))
1915	return rc;
1916
1917	if (VBOX_SUCCESS(src))
1918	{
1919	/*
1920	* Start the thread which will poll for the media.
1921	*/
1922	rc = RTThreadCreate(&pThis->ThreadPoller, drvHostBaseMediaThread, pThis, 0,
1923	RTTHREADTYPE_INFREQUENT_POLLER, RTTHREADFLAGS_WAITABLE, "DVDMEDIA");
1924	if (VBOX_FAILURE(rc))
1925	{
1926	AssertMsgFailed(("Failed to create poller thread. rc=%Vrc\n", rc));
1927	return rc;
1928	}
1929
1930	/*
1931	* Wait for the thread to start up (!w32:) and do one detection loop.
1932	*/
1933	rc = RTThreadUserWait(pThis->ThreadPoller, 10000);
1934	AssertRC(rc);
1935	#ifdef RT_OS_WINDOWS
1936	if (!pThis->hwndDeviceChange)
1937	return VERR_GENERAL_FAILURE;
1938	#endif
1939	}
1940
1941	if (VBOX_FAILURE(src))
1942	return src;
1943	return rc;
1944	}
1945

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostBase.cpp@ 4014

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