DrvHostBase.cpp@ 38694

Last change on this file since 38694 was 37780, checked in by vboxsync, 13 years ago
Storage/DrvHostBase: add generic unmount implementation, so that host floppy unmount works Main/Console: fix swapped error messages for medium change
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1	/* $Id: DrvHostBase.cpp 37780 2011-07-05 12:55:13Z vboxsync $ */
2	/** @file
3	* DrvHostBase - Host base drive access driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_HOST_BASE
23	#ifdef RT_OS_DARWIN
24	# include <mach/mach.h>
25	# include <Carbon/Carbon.h>
26	# include <IOKit/IOKitLib.h>
27	# include <IOKit/storage/IOStorageDeviceCharacteristics.h>
28	# include <IOKit/scsi/SCSITaskLib.h>
29	# include <IOKit/scsi/SCSICommandOperationCodes.h>
30	# include <IOKit/IOBSD.h>
31	# include <DiskArbitration/DiskArbitration.h>
32	# include <mach/mach_error.h>
33	# include <VBox/scsi.h>
34
35	#elif defined(RT_OS_L4)
36	/* Nothing special requires... yeah, right. */
37
38	#elif defined(RT_OS_LINUX)
39	# include <sys/ioctl.h>
40	# include <sys/fcntl.h>
41	# include <errno.h>
42
43	#elif defined(RT_OS_SOLARIS)
44	# include <fcntl.h>
45	# include <errno.h>
46	# include <stropts.h>
47	# include <malloc.h>
48	# include <sys/dkio.h>
49	extern "C" char getfullblkname(char );
50
51	#elif defined(RT_OS_WINDOWS)
52	# define WIN32_NO_STATUS
53	# include <Windows.h>
54	# include <dbt.h>
55	# undef WIN32_NO_STATUS
56	# include <ntstatus.h>
57
58	/* from ntdef.h */
59	typedef LONG NTSTATUS;
60
61	/* from ntddk.h */
62	typedef struct _IO_STATUS_BLOCK {
63	union {
64	NTSTATUS Status;
65	PVOID Pointer;
66	};
67	ULONG_PTR Information;
68	} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
69
70
71	/* from ntinternals.com */
72	typedef enum _FS_INFORMATION_CLASS {
73	FileFsVolumeInformation=1,
74	FileFsLabelInformation,
75	FileFsSizeInformation,
76	FileFsDeviceInformation,
77	FileFsAttributeInformation,
78	FileFsControlInformation,
79	FileFsFullSizeInformation,
80	FileFsObjectIdInformation,
81	FileFsMaximumInformation
82	} FS_INFORMATION_CLASS, *PFS_INFORMATION_CLASS;
83
84	typedef struct _FILE_FS_SIZE_INFORMATION {
85	LARGE_INTEGER TotalAllocationUnits;
86	LARGE_INTEGER AvailableAllocationUnits;
87	ULONG SectorsPerAllocationUnit;
88	ULONG BytesPerSector;
89	} FILE_FS_SIZE_INFORMATION, *PFILE_FS_SIZE_INFORMATION;
90
91	extern "C"
92	NTSTATUS __stdcall NtQueryVolumeInformationFile(
93	/IN/ HANDLE FileHandle,
94	/OUT/ PIO_STATUS_BLOCK IoStatusBlock,
95	/OUT/ PVOID FileSystemInformation,
96	/IN/ ULONG Length,
97	/IN/ FS_INFORMATION_CLASS FileSystemInformationClass );
98
99	#elif defined(RT_OS_FREEBSD)
100	# include <sys/cdefs.h>
101	# include <sys/param.h>
102	# include <errno.h>
103	# include <stdio.h>
104	# include <cam/cam.h>
105	# include <cam/cam_ccb.h>
106	# include <cam/scsi/scsi_message.h>
107	# include <cam/scsi/scsi_pass.h>
108	# include <VBox/scsi.h>
109	# include <iprt/log.h>
110	#else
111	# error "Unsupported Platform."
112	#endif
113
114	#include <VBox/vmm/pdmdrv.h>
115	#include <iprt/assert.h>
116	#include <iprt/file.h>
117	#include <iprt/path.h>
118	#include <iprt/string.h>
119	#include <iprt/thread.h>
120	#include <iprt/semaphore.h>
121	#include <iprt/uuid.h>
122	#include <iprt/asm.h>
123	#include <iprt/critsect.h>
124	#include <iprt/ctype.h>
125
126	#include "DrvHostBase.h"
127
128
129
130
131	/* -=-=-=-=- IBlock -=-=-=-=- */
132
133	/** @copydoc PDMIBLOCK::pfnRead */
134	static DECLCALLBACK(int) drvHostBaseRead(PPDMIBLOCK pInterface, uint64_t off, void *pvBuf, size_t cbRead)
135	{
136	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
137	LogFlow(("%s-%d: drvHostBaseRead: off=%#llx pvBuf=%p cbRead=%#x (%s)\n",
138	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, off, pvBuf, cbRead, pThis->pszDevice));
139	RTCritSectEnter(&pThis->CritSect);
140
141	/*
142	* Check the state.
143	*/
144	int rc;
145	#ifdef RT_OS_DARWIN
146	if ( pThis->fMediaPresent
147	&& pThis->ppScsiTaskDI
148	&& pThis->cbBlock)
149	#elif RT_OS_FREEBSD
150	if ( pThis->fMediaPresent
151	&& pThis->cbBlock)
152	#else
153	if (pThis->fMediaPresent)
154	#endif
155	{
156	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_FREEBSD)
157	/*
158	* Issue a READ(12) request.
159	*/
160	do
161	{
162	const uint32_t LBA = off / pThis->cbBlock;
163	AssertReturn(!(off % pThis->cbBlock), VERR_INVALID_PARAMETER);
164	uint32_t cbRead32 = cbRead > SCSI_MAX_BUFFER_SIZE
165	? SCSI_MAX_BUFFER_SIZE
166	: (uint32_t)cbRead;
167	const uint32_t cBlocks = cbRead32 / pThis->cbBlock;
168	AssertReturn(!(cbRead % pThis->cbBlock), VERR_INVALID_PARAMETER);
169	uint8_t abCmd[16] =
170	{
171	SCSI_READ_12, 0,
172	RT_BYTE4(LBA), RT_BYTE3(LBA), RT_BYTE2(LBA), RT_BYTE1(LBA),
173	RT_BYTE4(cBlocks), RT_BYTE3(cBlocks), RT_BYTE2(cBlocks), RT_BYTE1(cBlocks),
174	0, 0, 0, 0, 0
175	};
176	rc = DRVHostBaseScsiCmd(pThis, abCmd, 12, PDMBLOCKTXDIR_FROM_DEVICE, pvBuf, &cbRead32, NULL, 0, 0);
177
178	off += cbRead32;
179	cbRead -= cbRead32;
180	pvBuf = (uint8_t *)pvBuf + cbRead32;
181	} while ((cbRead > 0) && RT_SUCCESS(rc));
182
183	#else
184	/*
185	* Seek and read.
186	*/
187	rc = RTFileReadAt(pThis->hFileDevice, off, pvBuf, cbRead, NULL);
188	if (RT_SUCCESS(rc))
189	{
190	Log2(("%s-%d: drvHostBaseRead: off=%#llx cbRead=%#x\n"
191	"%16.*Rhxd\n",
192	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, off, cbRead, cbRead, pvBuf));
193	}
194	else
195	Log(("%s-%d: drvHostBaseRead: RTFileReadAt(%RTfile, %#llx, %p, %#x) -> %Rrc ('%s')\n",
196	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->hFileDevice,
197	off, pvBuf, cbRead, rc, pThis->pszDevice));
198	#endif
199	}
200	else
201	rc = VERR_MEDIA_NOT_PRESENT;
202
203	RTCritSectLeave(&pThis->CritSect);
204	LogFlow(("%s-%d: drvHostBaseRead: returns %Rrc\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, rc));
205	return rc;
206	}
207
208
209	/** @copydoc PDMIBLOCK::pfnWrite */
210	static DECLCALLBACK(int) drvHostBaseWrite(PPDMIBLOCK pInterface, uint64_t off, const void *pvBuf, size_t cbWrite)
211	{
212	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
213	LogFlow(("%s-%d: drvHostBaseWrite: off=%#llx pvBuf=%p cbWrite=%#x (%s)\n",
214	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, off, pvBuf, cbWrite, pThis->pszDevice));
215	Log2(("%s-%d: drvHostBaseWrite: off=%#llx cbWrite=%#x\n"
216	"%16.*Rhxd\n",
217	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, off, cbWrite, cbWrite, pvBuf));
218	RTCritSectEnter(&pThis->CritSect);
219
220	/*
221	* Check the state.
222	*/
223	int rc;
224	if (!pThis->fReadOnly)
225	{
226	if (pThis->fMediaPresent)
227	{
228	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_FREEBSD)
229	/** @todo write support... */
230	rc = VERR_WRITE_PROTECT;
231
232	#else
233	/*
234	* Seek and write.
235	*/
236	rc = RTFileWriteAt(pThis->hFileDevice, off, pvBuf, cbWrite, NULL);
237	if (RT_FAILURE(rc))
238	Log(("%s-%d: drvHostBaseWrite: RTFileWriteAt(%RTfile, %#llx, %p, %#x) -> %Rrc ('%s')\n",
239	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->hFileDevice,
240	off, pvBuf, cbWrite, rc, pThis->pszDevice));
241	#endif
242	}
243	else
244	rc = VERR_MEDIA_NOT_PRESENT;
245	}
246	else
247	rc = VERR_WRITE_PROTECT;
248
249	RTCritSectLeave(&pThis->CritSect);
250	LogFlow(("%s-%d: drvHostBaseWrite: returns %Rrc\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, rc));
251	return rc;
252	}
253
254
255	/** @copydoc PDMIBLOCK::pfnFlush */
256	static DECLCALLBACK(int) drvHostBaseFlush(PPDMIBLOCK pInterface)
257	{
258	int rc;
259	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
260	LogFlow(("%s-%d: drvHostBaseFlush: (%s)\n",
261	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->pszDevice));
262	RTCritSectEnter(&pThis->CritSect);
263
264	if (pThis->fMediaPresent)
265	{
266	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_FREEBSD)
267	rc = VINF_SUCCESS;
268	/** @todo scsi device buffer flush... */
269	#else
270	rc = RTFileFlush(pThis->hFileDevice);
271	#endif
272	}
273	else
274	rc = VERR_MEDIA_NOT_PRESENT;
275
276	RTCritSectLeave(&pThis->CritSect);
277	LogFlow(("%s-%d: drvHostBaseFlush: returns %Rrc\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, rc));
278	return rc;
279	}
280
281
282	/** @copydoc PDMIBLOCK::pfnIsReadOnly */
283	static DECLCALLBACK(bool) drvHostBaseIsReadOnly(PPDMIBLOCK pInterface)
284	{
285	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
286	return pThis->fReadOnly;
287	}
288
289
290	/** @copydoc PDMIBLOCK::pfnGetSize */
291	static DECLCALLBACK(uint64_t) drvHostBaseGetSize(PPDMIBLOCK pInterface)
292	{
293	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
294	RTCritSectEnter(&pThis->CritSect);
295
296	uint64_t cb = 0;
297	if (pThis->fMediaPresent)
298	cb = pThis->cbSize;
299
300	RTCritSectLeave(&pThis->CritSect);
301	LogFlow(("%s-%d: drvHostBaseGetSize: returns %llu\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, cb));
302	return cb;
303	}
304
305
306	/** @copydoc PDMIBLOCK::pfnGetType */
307	static DECLCALLBACK(PDMBLOCKTYPE) drvHostBaseGetType(PPDMIBLOCK pInterface)
308	{
309	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
310	LogFlow(("%s-%d: drvHostBaseGetType: returns %d\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->enmType));
311	return pThis->enmType;
312	}
313
314
315	/** @copydoc PDMIBLOCK::pfnGetUuid */
316	static DECLCALLBACK(int) drvHostBaseGetUuid(PPDMIBLOCK pInterface, PRTUUID pUuid)
317	{
318	PDRVHOSTBASE pThis = PDMIBLOCK_2_DRVHOSTBASE(pInterface);
319
320	*pUuid = pThis->Uuid;
321
322	LogFlow(("%s-%d: drvHostBaseGetUuid: returns VINF_SUCCESS *pUuid=%RTuuid\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pUuid));
323	return VINF_SUCCESS;
324	}
325
326
327	/* -=-=-=-=- IBlockBios -=-=-=-=- */
328
329	/** Makes a PDRVHOSTBASE out of a PPDMIBLOCKBIOS. */
330	#define PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface) ( (PDRVHOSTBASE((uintptr_t)pInterface - RT_OFFSETOF(DRVHOSTBASE, IBlockBios))) )
331
332
333	/** @copydoc PDMIBLOCKBIOS::pfnGetPCHSGeometry */
334	static DECLCALLBACK(int) drvHostBaseGetPCHSGeometry(PPDMIBLOCKBIOS pInterface, PPDMMEDIAGEOMETRY pPCHSGeometry)
335	{
336	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
337	RTCritSectEnter(&pThis->CritSect);
338
339	int rc = VINF_SUCCESS;
340	if (pThis->fMediaPresent)
341	{
342	if ( pThis->PCHSGeometry.cCylinders > 0
343	&& pThis->PCHSGeometry.cHeads > 0
344	&& pThis->PCHSGeometry.cSectors > 0)
345	{
346	*pPCHSGeometry = pThis->PCHSGeometry;
347	}
348	else
349	rc = VERR_PDM_GEOMETRY_NOT_SET;
350	}
351	else
352	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
353
354	RTCritSectLeave(&pThis->CritSect);
355	LogFlow(("%s-%d: %s: returns %Rrc CHS={%d,%d,%d}\n",
356	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, __FUNCTION__, rc, pThis->PCHSGeometry.cCylinders, pThis->PCHSGeometry.cHeads, pThis->PCHSGeometry.cSectors));
357	return rc;
358	}
359
360
361	/** @copydoc PDMIBLOCKBIOS::pfnSetPCHSGeometry */
362	static DECLCALLBACK(int) drvHostBaseSetPCHSGeometry(PPDMIBLOCKBIOS pInterface, PCPDMMEDIAGEOMETRY pPCHSGeometry)
363	{
364	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
365	LogFlow(("%s-%d: %s: cCylinders=%d cHeads=%d cSectors=%d\n",
366	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, __FUNCTION__, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
367	RTCritSectEnter(&pThis->CritSect);
368
369	int rc = VINF_SUCCESS;
370	if (pThis->fMediaPresent)
371	{
372	pThis->PCHSGeometry = *pPCHSGeometry;
373	}
374	else
375	{
376	AssertMsgFailed(("Invalid state! Not mounted!\n"));
377	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
378	}
379
380	RTCritSectLeave(&pThis->CritSect);
381	return rc;
382	}
383
384
385	/** @copydoc PDMIBLOCKBIOS::pfnGetLCHSGeometry */
386	static DECLCALLBACK(int) drvHostBaseGetLCHSGeometry(PPDMIBLOCKBIOS pInterface, PPDMMEDIAGEOMETRY pLCHSGeometry)
387	{
388	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
389	RTCritSectEnter(&pThis->CritSect);
390
391	int rc = VINF_SUCCESS;
392	if (pThis->fMediaPresent)
393	{
394	if ( pThis->LCHSGeometry.cCylinders > 0
395	&& pThis->LCHSGeometry.cHeads > 0
396	&& pThis->LCHSGeometry.cSectors > 0)
397	{
398	*pLCHSGeometry = pThis->LCHSGeometry;
399	}
400	else
401	rc = VERR_PDM_GEOMETRY_NOT_SET;
402	}
403	else
404	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
405
406	RTCritSectLeave(&pThis->CritSect);
407	LogFlow(("%s-%d: %s: returns %Rrc CHS={%d,%d,%d}\n",
408	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, __FUNCTION__, rc, pThis->LCHSGeometry.cCylinders, pThis->LCHSGeometry.cHeads, pThis->LCHSGeometry.cSectors));
409	return rc;
410	}
411
412
413	/** @copydoc PDMIBLOCKBIOS::pfnSetLCHSGeometry */
414	static DECLCALLBACK(int) drvHostBaseSetLCHSGeometry(PPDMIBLOCKBIOS pInterface, PCPDMMEDIAGEOMETRY pLCHSGeometry)
415	{
416	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
417	LogFlow(("%s-%d: %s: cCylinders=%d cHeads=%d cSectors=%d\n",
418	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, __FUNCTION__, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
419	RTCritSectEnter(&pThis->CritSect);
420
421	int rc = VINF_SUCCESS;
422	if (pThis->fMediaPresent)
423	{
424	pThis->LCHSGeometry = *pLCHSGeometry;
425	}
426	else
427	{
428	AssertMsgFailed(("Invalid state! Not mounted!\n"));
429	rc = VERR_PDM_MEDIA_NOT_MOUNTED;
430	}
431
432	RTCritSectLeave(&pThis->CritSect);
433	return rc;
434	}
435
436
437	/** @copydoc PDMIBLOCKBIOS::pfnIsVisible */
438	static DECLCALLBACK(bool) drvHostBaseIsVisible(PPDMIBLOCKBIOS pInterface)
439	{
440	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
441	return pThis->fBiosVisible;
442	}
443
444
445	/** @copydoc PDMIBLOCKBIOS::pfnGetType */
446	static DECLCALLBACK(PDMBLOCKTYPE) drvHostBaseBiosGetType(PPDMIBLOCKBIOS pInterface)
447	{
448	PDRVHOSTBASE pThis = PDMIBLOCKBIOS_2_DRVHOSTBASE(pInterface);
449	return pThis->enmType;
450	}
451
452
453
454	/* -=-=-=-=- IMount -=-=-=-=- */
455
456	/** @copydoc PDMIMOUNT::pfnMount */
457	static DECLCALLBACK(int) drvHostBaseMount(PPDMIMOUNT pInterface, const char pszFilename, const char pszCoreDriver)
458	{
459	/* We're not mountable. */
460	AssertMsgFailed(("drvHostBaseMount: This shouldn't be called!\n"));
461	return VERR_PDM_MEDIA_MOUNTED;
462	}
463
464
465	/** @copydoc PDMIMOUNT::pfnUnmount */
466	static DECLCALLBACK(int) drvHostBaseUnmount(PPDMIMOUNT pInterface, bool fForce, bool fEject)
467	{
468	/* While we're not mountable (see drvHostBaseMount), we're unmountable. */
469	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
470	RTCritSectEnter(&pThis->CritSect);
471
472	/*
473	* Validate state.
474	*/
475	int rc = VINF_SUCCESS;
476	if (!pThis->fLocked \|\| fForce)
477	{
478	/* Unlock drive if necessary. */
479	if (pThis->fLocked)
480	{
481	if (pThis->pfnDoLock)
482	rc = pThis->pfnDoLock(pThis, false);
483	if (RT_SUCCESS(rc))
484	pThis->fLocked = false;
485	}
486
487	/*
488	* Media is no longer present.
489	*/
490	DRVHostBaseMediaNotPresent(pThis);
491	}
492	else
493	{
494	Log(("drvHostiBaseUnmount: Locked\n"));
495	rc = VERR_PDM_MEDIA_LOCKED;
496	}
497
498	RTCritSectLeave(&pThis->CritSect);
499	LogFlow(("drvHostBaseUnmount: returns %Rrc\n", rc));
500	return rc;
501	}
502
503
504	/** @copydoc PDMIMOUNT::pfnIsMounted */
505	static DECLCALLBACK(bool) drvHostBaseIsMounted(PPDMIMOUNT pInterface)
506	{
507	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
508	RTCritSectEnter(&pThis->CritSect);
509
510	bool fRc = pThis->fMediaPresent;
511
512	RTCritSectLeave(&pThis->CritSect);
513	return fRc;
514	}
515
516
517	/** @copydoc PDMIMOUNT::pfnIsLocked */
518	static DECLCALLBACK(int) drvHostBaseLock(PPDMIMOUNT pInterface)
519	{
520	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
521	RTCritSectEnter(&pThis->CritSect);
522
523	int rc = VINF_SUCCESS;
524	if (!pThis->fLocked)
525	{
526	if (pThis->pfnDoLock)
527	rc = pThis->pfnDoLock(pThis, true);
528	if (RT_SUCCESS(rc))
529	pThis->fLocked = true;
530	}
531	else
532	LogFlow(("%s-%d: drvHostBaseLock: already locked\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
533
534	RTCritSectLeave(&pThis->CritSect);
535	LogFlow(("%s-%d: drvHostBaseLock: returns %Rrc\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, rc));
536	return rc;
537	}
538
539
540	/** @copydoc PDMIMOUNT::pfnIsLocked */
541	static DECLCALLBACK(int) drvHostBaseUnlock(PPDMIMOUNT pInterface)
542	{
543	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
544	RTCritSectEnter(&pThis->CritSect);
545
546	int rc = VINF_SUCCESS;
547	if (pThis->fLocked)
548	{
549	if (pThis->pfnDoLock)
550	rc = pThis->pfnDoLock(pThis, false);
551	if (RT_SUCCESS(rc))
552	pThis->fLocked = false;
553	}
554	else
555	LogFlow(("%s-%d: drvHostBaseUnlock: not locked\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
556
557	RTCritSectLeave(&pThis->CritSect);
558	LogFlow(("%s-%d: drvHostBaseUnlock: returns %Rrc\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, rc));
559	return rc;
560	}
561
562
563	/** @copydoc PDMIMOUNT::pfnIsLocked */
564	static DECLCALLBACK(bool) drvHostBaseIsLocked(PPDMIMOUNT pInterface)
565	{
566	PDRVHOSTBASE pThis = PDMIMOUNT_2_DRVHOSTBASE(pInterface);
567	RTCritSectEnter(&pThis->CritSect);
568
569	bool fRc = pThis->fLocked;
570
571	RTCritSectLeave(&pThis->CritSect);
572	return fRc;
573	}
574
575
576	/* -=-=-=-=- IBase -=-=-=-=- */
577
578	/**
579	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
580	*/
581	static DECLCALLBACK(void ) drvHostBaseQueryInterface(PPDMIBASE pInterface, const char pszIID)
582	{
583	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
584	PDRVHOSTBASE pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTBASE);
585
586	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
587	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBLOCK, &pThis->IBlock);
588	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBLOCKBIOS, pThis->fBiosVisible ? &pThis->IBlockBios : NULL);
589	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNT, &pThis->IMount);
590	return NULL;
591	}
592
593
594	/* -=-=-=-=- poller thread -=-=-=-=- */
595
596	#ifdef RT_OS_DARWIN
597	/** The runloop input source name for the disk arbitration events. */
598	# define MY_RUN_LOOP_MODE CFSTR("drvHostBaseDA") /** @todo r=bird: Check if this will cause trouble in the same way that the one in the USB code did. */
599
600	/**
601	* Gets the BSD Name (/dev/disc[0-9]+) for the service.
602	*
603	* This is done by recursing down the I/O registry until we hit upon an entry
604	* with a BSD Name. Usually we find it two levels down. (Further down under
605	* the IOCDPartitionScheme, the volume (slices) BSD Name is found. We don't
606	* seem to have to go this far fortunately.)
607	*
608	* @return VINF_SUCCESS if found, VERR_FILE_NOT_FOUND otherwise.
609	* @param Entry The current I/O registry entry reference.
610	* @param pszName Where to store the name. 128 bytes.
611	* @param cRecursions Number of recursions. This is used as an precaution
612	* just to limit the depth and avoid blowing the stack
613	* should we hit a bug or something.
614	*/
615	static int drvHostBaseGetBSDName(io_registry_entry_t Entry, char *pszName, unsigned cRecursions)
616	{
617	int rc = VERR_FILE_NOT_FOUND;
618	io_iterator_t Children = 0;
619	kern_return_t krc = IORegistryEntryGetChildIterator(Entry, kIOServicePlane, &Children);
620	if (krc == KERN_SUCCESS)
621	{
622	io_object_t Child;
623	while ( rc == VERR_FILE_NOT_FOUND
624	&& (Child = IOIteratorNext(Children)) != 0)
625	{
626	CFStringRef BSDNameStrRef = (CFStringRef)IORegistryEntryCreateCFProperty(Child, CFSTR(kIOBSDNameKey), kCFAllocatorDefault, 0);
627	if (BSDNameStrRef)
628	{
629	if (CFStringGetCString(BSDNameStrRef, pszName, 128, kCFStringEncodingUTF8))
630	rc = VINF_SUCCESS;
631	else
632	AssertFailed();
633	CFRelease(BSDNameStrRef);
634	}
635	if (rc == VERR_FILE_NOT_FOUND && cRecursions < 10)
636	rc = drvHostBaseGetBSDName(Child, pszName, cRecursions + 1);
637	IOObjectRelease(Child);
638	}
639	IOObjectRelease(Children);
640	}
641	return rc;
642	}
643
644
645	/**
646	* Callback notifying us that the async DADiskClaim()/DADiskUnmount call has completed.
647	*
648	* @param DiskRef The disk that was attempted claimed / unmounted.
649	* @param DissenterRef NULL on success, contains details on failure.
650	* @param pvContext Pointer to the return code variable.
651	*/
652	static void drvHostBaseDADoneCallback(DADiskRef DiskRef, DADissenterRef DissenterRef, void *pvContext)
653	{
654	int prc = (int )pvContext;
655	if (!DissenterRef)
656	*prc = 0;
657	else
658	*prc = DADissenterGetStatus(DissenterRef) ? DADissenterGetStatus(DissenterRef) : -1;
659	CFRunLoopStop(CFRunLoopGetCurrent());
660	}
661
662
663	/**
664	* Obtain exclusive access to the DVD device, umount it if necessary.
665	*
666	* @return VBox status code.
667	* @param pThis The driver instance.
668	* @param DVDService The DVD service object.
669	*/
670	static int drvHostBaseObtainExclusiveAccess(PDRVHOSTBASE pThis, io_object_t DVDService)
671	{
672	PPDMDRVINS pDrvIns = pThis->pDrvIns; NOREF(pDrvIns);
673
674	for (unsigned iTry = 0;; iTry++)
675	{
676	IOReturn irc = (*pThis->ppScsiTaskDI)->ObtainExclusiveAccess(pThis->ppScsiTaskDI);
677	if (irc == kIOReturnSuccess)
678	{
679	/*
680	* This is a bit weird, but if we unmounted the DVD drive we also need to
681	* unlock it afterwards or the guest won't be able to eject it later on.
682	*/
683	if (pThis->pDADisk)
684	{
685	uint8_t abCmd[16] =
686	{
687	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, false, 0,
688	0,0,0,0,0,0,0,0,0,0
689	};
690	DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_NONE, NULL, NULL, NULL, 0, 0);
691	}
692	return VINF_SUCCESS;
693	}
694	if (irc == kIOReturnExclusiveAccess)
695	return VERR_SHARING_VIOLATION; /* already used exclusivly. */
696	if (irc != kIOReturnBusy)
697	return VERR_GENERAL_FAILURE; /* not mounted */
698
699	/*
700	* Attempt to the unmount all volumes of the device.
701	* It seems we can can do this all in one go without having to enumerate the
702	* volumes (sessions) and deal with them one by one. This is very fortuitous
703	* as the disk arbitration API is a bit cumbersome to deal with.
704	*/
705	if (iTry > 2)
706	return VERR_DRIVE_LOCKED;
707	char szName[128];
708	int rc = drvHostBaseGetBSDName(DVDService, &szName[0], 0);
709	if (RT_SUCCESS(rc))
710	{
711	pThis->pDASession = DASessionCreate(kCFAllocatorDefault);
712	if (pThis->pDASession)
713	{
714	DASessionScheduleWithRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
715	pThis->pDADisk = DADiskCreateFromBSDName(kCFAllocatorDefault, pThis->pDASession, szName);
716	if (pThis->pDADisk)
717	{
718	/*
719	* Try claim the device.
720	*/
721	Log(("%s-%d: calling DADiskClaim on '%s'.\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
722	int rcDA = -2;
723	DADiskClaim(pThis->pDADisk, kDADiskClaimOptionDefault, NULL, NULL, drvHostBaseDADoneCallback, &rcDA);
724	SInt32 rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
725	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
726	if ( rc32 == kCFRunLoopRunStopped
727	&& !rcDA)
728	{
729	/*
730	* Try unmount the device.
731	*/
732	Log(("%s-%d: calling DADiskUnmount on '%s'.\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
733	rcDA = -2;
734	DADiskUnmount(pThis->pDADisk, kDADiskUnmountOptionWhole, drvHostBaseDADoneCallback, &rcDA);
735	rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
736	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
737	if ( rc32 == kCFRunLoopRunStopped
738	&& !rcDA)
739	{
740	iTry = 99;
741	DASessionUnscheduleFromRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
742	Log(("%s-%d: unmount succeed - retrying.\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
743	continue;
744	}
745	Log(("%s-%d: umount => rc32=%d & rcDA=%#x\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc32, rcDA));
746
747	/* failed - cleanup */
748	DADiskUnclaim(pThis->pDADisk);
749	}
750	else
751	Log(("%s-%d: claim => rc32=%d & rcDA=%#x\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc32, rcDA));
752
753	CFRelease(pThis->pDADisk);
754	pThis->pDADisk = NULL;
755	}
756	else
757	Log(("%s-%d: failed to open disk '%s'!\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
758
759	DASessionUnscheduleFromRunLoop(pThis->pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
760	CFRelease(pThis->pDASession);
761	pThis->pDASession = NULL;
762	}
763	else
764	Log(("%s-%d: failed to create DA session!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
765	}
766	RTThreadSleep(10);
767	}
768	}
769	#endif /* RT_OS_DARWIN */
770
771
772	#ifndef RT_OS_SOLARIS
773	/**
774	* Wrapper for open / RTFileOpen / IOKit.
775	*
776	* @remark The Darwin code must correspond exactly to the enumeration
777	* done in Main/darwin/iokit.c.
778	*/
779	static int drvHostBaseOpen(PDRVHOSTBASE pThis, PRTFILE pFileDevice, bool fReadOnly)
780	{
781	# ifdef RT_OS_DARWIN
782	/* Darwin is kind of special... */
783	Assert(!pFileDevice); NOREF(pFileDevice);
784	Assert(!pThis->cbBlock);
785	Assert(!pThis->MasterPort);
786	Assert(!pThis->ppMMCDI);
787	Assert(!pThis->ppScsiTaskDI);
788
789	/*
790	* Open the master port on the first invocation.
791	*/
792	kern_return_t krc = IOMasterPort(MACH_PORT_NULL, &pThis->MasterPort);
793	AssertReturn(krc == KERN_SUCCESS, VERR_GENERAL_FAILURE);
794
795	/*
796	* Create a matching dictionary for searching for DVD services in the IOKit.
797	*
798	* [If I understand this correctly, plain CDROMs doesn't show up as
799	* IODVDServices. Too keep things simple, we will only support DVDs
800	* until somebody complains about it and we get hardware to test it on.
801	* (Unless I'm much mistaken, there aren't any (orignal) intel macs with
802	* plain cdroms.)]
803	*/
804	CFMutableDictionaryRef RefMatchingDict = IOServiceMatching("IODVDServices");
805	AssertReturn(RefMatchingDict, NULL);
806
807	/*
808	* do the search and get a collection of keyboards.
809	*/
810	io_iterator_t DVDServices = NULL;
811	IOReturn irc = IOServiceGetMatchingServices(pThis->MasterPort, RefMatchingDict, &DVDServices);
812	AssertMsgReturn(irc == kIOReturnSuccess, ("irc=%d\n", irc), NULL);
813	RefMatchingDict = NULL; /* the reference is consumed by IOServiceGetMatchingServices. */
814
815	/*
816	* Enumerate the DVD drives (services).
817	* (This enumeration must be identical to the one performed in DrvHostBase.cpp.)
818	*/
819	int rc = VERR_FILE_NOT_FOUND;
820	unsigned i = 0;
821	io_object_t DVDService;
822	while ((DVDService = IOIteratorNext(DVDServices)) != 0)
823	{
824	/*
825	* Get the properties we use to identify the DVD drive.
826	*
827	* While there is a (weird 12 byte) GUID, it isn't persistent
828	* across boots. So, we have to use a combination of the
829	* vendor name and product name properties with an optional
830	* sequence number for identification.
831	*/
832	CFMutableDictionaryRef PropsRef = 0;
833	krc = IORegistryEntryCreateCFProperties(DVDService, &PropsRef, kCFAllocatorDefault, kNilOptions);
834	if (krc == KERN_SUCCESS)
835	{
836	/* Get the Device Characteristics dictionary. */
837	CFDictionaryRef DevCharRef = (CFDictionaryRef)CFDictionaryGetValue(PropsRef, CFSTR(kIOPropertyDeviceCharacteristicsKey));
838	if (DevCharRef)
839	{
840	/* The vendor name. */
841	char szVendor[128];
842	char *pszVendor = &szVendor[0];
843	CFTypeRef ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyVendorNameKey));
844	if ( ValueRef
845	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
846	&& CFStringGetCString((CFStringRef)ValueRef, szVendor, sizeof(szVendor), kCFStringEncodingUTF8))
847	pszVendor = RTStrStrip(szVendor);
848	else
849	*pszVendor = '\0';
850
851	/* The product name. */
852	char szProduct[128];
853	char *pszProduct = &szProduct[0];
854	ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyProductNameKey));
855	if ( ValueRef
856	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
857	&& CFStringGetCString((CFStringRef)ValueRef, szProduct, sizeof(szProduct), kCFStringEncodingUTF8))
858	pszProduct = RTStrStrip(szProduct);
859	else
860	*pszProduct = '\0';
861
862	/* Construct the two names and compare thwm with the one we're searching for. */
863	char szName1[256 + 32];
864	char szName2[256 + 32];
865	if (pszVendor \|\| pszProduct)
866	{
867	if (pszVendor && pszProduct)
868	{
869	RTStrPrintf(szName1, sizeof(szName1), "%s %s", pszVendor, pszProduct);
870	RTStrPrintf(szName2, sizeof(szName2), "%s %s (#%u)", pszVendor, pszProduct, i);
871	}
872	else
873	{
874	strcpy(szName1, *pszVendor ? pszVendor : pszProduct);
875	RTStrPrintf(szName2, sizeof(szName2), "%s %s (#%u)", *pszVendor ? pszVendor : pszProduct, i);
876	}
877	}
878	else
879	{
880	RTStrPrintf(szName1, sizeof(szName1), "(#%u)", i);
881	strcpy(szName2, szName1);
882	}
883
884	if ( !strcmp(szName1, pThis->pszDeviceOpen)
885	\|\| !strcmp(szName2, pThis->pszDeviceOpen))
886	{
887	/*
888	* Found it! Now, get the client interface and stuff.
889	* Note that we could also query kIOSCSITaskDeviceUserClientTypeID here if the
890	* MMC client plugin is missing. For now we assume this won't be necessary.
891	*/
892	SInt32 Score = 0;
893	IOCFPlugInInterface **ppPlugInInterface = NULL;
894	krc = IOCreatePlugInInterfaceForService(DVDService, kIOMMCDeviceUserClientTypeID, kIOCFPlugInInterfaceID,
895	&ppPlugInInterface, &Score);
896	if (krc == KERN_SUCCESS)
897	{
898	HRESULT hrc = (*ppPlugInInterface)->QueryInterface(ppPlugInInterface,
899	CFUUIDGetUUIDBytes(kIOMMCDeviceInterfaceID),
900	(LPVOID *)&pThis->ppMMCDI);
901	(*ppPlugInInterface)->Release(ppPlugInInterface);
902	ppPlugInInterface = NULL;
903	if (hrc == S_OK)
904	{
905	pThis->ppScsiTaskDI = (*pThis->ppMMCDI)->GetSCSITaskDeviceInterface(pThis->ppMMCDI);
906	if (pThis->ppScsiTaskDI)
907	rc = VINF_SUCCESS;
908	else
909	{
910	LogRel(("GetSCSITaskDeviceInterface failed on '%s'\n", pThis->pszDeviceOpen));
911	rc = VERR_NOT_SUPPORTED;
912	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
913	}
914	}
915	else
916	{
917	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinCOM(krc);
918	pThis->ppMMCDI = NULL;
919	}
920	}
921	else /* Check for kIOSCSITaskDeviceUserClientTypeID? */
922	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinKern(krc);
923
924	/* Obtain exclusive access to the device so we can send SCSI commands. */
925	if (RT_SUCCESS(rc))
926	rc = drvHostBaseObtainExclusiveAccess(pThis, DVDService);
927
928	/* Cleanup on failure. */
929	if (RT_FAILURE(rc))
930	{
931	if (pThis->ppScsiTaskDI)
932	{
933	(*pThis->ppScsiTaskDI)->Release(pThis->ppScsiTaskDI);
934	pThis->ppScsiTaskDI = NULL;
935	}
936	if (pThis->ppMMCDI)
937	{
938	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
939	pThis->ppMMCDI = NULL;
940	}
941	}
942
943	IOObjectRelease(DVDService);
944	break;
945	}
946	}
947	CFRelease(PropsRef);
948	}
949	else
950	AssertMsgFailed(("krc=%#x\n", krc));
951
952	IOObjectRelease(DVDService);
953	i++;
954	}
955
956	IOObjectRelease(DVDServices);
957	return rc;
958
959	#elif defined(RT_OS_FREEBSD)
960	RTFILE hFileDevice;
961	int rc = RTFileOpen(&hFileDevice, pThis->pszDeviceOpen, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
962	if (RT_FAILURE(rc))
963	return rc;
964
965	/*
966	* The current device handle can't passthrough SCSI commands.
967	* We have to get he passthrough device path and open this.
968	*/
969	union ccb DeviceCCB;
970	memset(&DeviceCCB, 0, sizeof(DeviceCCB));
971
972	DeviceCCB.ccb_h.func_code = XPT_GDEVLIST;
973	int rcBSD = ioctl(RTFileToNative(hFileDevice), CAMGETPASSTHRU, &DeviceCCB);
974	if (!rcBSD)
975	{
976	char *pszPassthroughDevice = NULL;
977	rc = RTStrAPrintf(&pszPassthroughDevice, "/dev/%s%u",
978	DeviceCCB.cgdl.periph_name, DeviceCCB.cgdl.unit_number);
979	if (rc >= 0)
980	{
981	RTFILE hPassthroughDevice;
982	rc = RTFileOpen(&hPassthroughDevice, pszPassthroughDevice, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
983	RTStrFree(pszPassthroughDevice);
984	if (RT_SUCCESS(rc))
985	{
986	/* Get needed device parameters. */
987
988	/*
989	* The device path, target id and lun id. Those are
990	* needed for the SCSI passthrough ioctl.
991	*/
992	memset(&DeviceCCB, 0, sizeof(DeviceCCB));
993	DeviceCCB.ccb_h.func_code = XPT_GDEVLIST;
994
995	rcBSD = ioctl(RTFileToNative(hPassthroughDevice), CAMGETPASSTHRU, &DeviceCCB);
996	if (!rcBSD)
997	{
998	if (DeviceCCB.cgdl.status != CAM_GDEVLIST_ERROR)
999	{
1000	pThis->ScsiBus = DeviceCCB.ccb_h.path_id;
1001	pThis->ScsiTargetID = DeviceCCB.ccb_h.target_id;
1002	pThis->ScsiLunID = DeviceCCB.ccb_h.target_lun;
1003	*pFileDevice = hPassthroughDevice;
1004	}
1005	else
1006	{
1007	/* The passthrough device wasn't found. */
1008	rc = VERR_NOT_FOUND;
1009	}
1010	}
1011	else
1012	rc = RTErrConvertFromErrno(errno);
1013
1014	if (RT_FAILURE(rc))
1015	RTFileClose(hPassthroughDevice);
1016	}
1017	}
1018	else
1019	rc = VERR_NO_STR_MEMORY;
1020	}
1021	else
1022	rc = RTErrConvertFromErrno(errno);
1023
1024	RTFileClose(hFileDevice);
1025	return rc;
1026
1027	#else
1028	uint32_t fFlags = (fReadOnly ? RTFILE_O_READ : RTFILE_O_READWRITE) \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE;
1029	# ifdef RT_OS_LINUX
1030	fFlags \|= RTFILE_O_NON_BLOCK;
1031	# endif
1032	return RTFileOpen(pFileDevice, pThis->pszDeviceOpen, fFlags);
1033	#endif
1034	}
1035
1036	#else /* RT_OS_SOLARIS */
1037
1038	/**
1039	* Solaris wrapper for RTFileOpen.
1040	*
1041	* Solaris has to deal with two filehandles, a block and a raw one. Rather than messing
1042	* with drvHostBaseOpen's function signature & body, having a separate one is better.
1043	*
1044	* @returns VBox status code.
1045	*/
1046	static int drvHostBaseOpen(PDRVHOSTBASE pThis, PRTFILE pFileBlockDevice, PRTFILE pFileRawDevice, bool fReadOnly)
1047	{
1048	unsigned fFlags = (fReadOnly ? RTFILE_O_READ : RTFILE_O_READWRITE)
1049	\| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_NON_BLOCK;
1050	int rc = RTFileOpen(pFileBlockDevice, pThis->pszDeviceOpen, fFlags);
1051	if (RT_SUCCESS(rc))
1052	{
1053	rc = RTFileOpen(pFileRawDevice, pThis->pszRawDeviceOpen, fFlags);
1054	if (RT_SUCCESS(rc))
1055	return rc;
1056
1057	LogRel(("DVD: failed to open device %s rc=%Rrc\n", pThis->pszRawDeviceOpen, rc));
1058	RTFileClose(*pFileBlockDevice);
1059	}
1060	else
1061	LogRel(("DVD: failed to open device %s rc=%Rrc\n", pThis->pszDeviceOpen, rc));
1062	return rc;
1063	}
1064	#endif /* RT_OS_SOLARIS */
1065
1066
1067	/**
1068	* (Re)opens the device.
1069	*
1070	* This is used to open the device during construction, but it's also used to re-open
1071	* the device when a media is inserted. This re-open will kill off any cached data
1072	* that Linux for some peculiar reason thinks should survive a media change...
1073	*
1074	* @returns VBOX status code.
1075	* @param pThis Instance data.
1076	*/
1077	static int drvHostBaseReopen(PDRVHOSTBASE pThis)
1078	{
1079	#ifndef RT_OS_DARWIN /* Only one open for darwin. */
1080	LogFlow(("%s-%d: drvHostBaseReopen: '%s'\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->pszDeviceOpen));
1081
1082	RTFILE hFileDevice;
1083	#ifdef RT_OS_SOLARIS
1084	if (pThis->hFileRawDevice != NIL_RTFILE)
1085	{
1086	RTFileClose(pThis->hFileRawDevice);
1087	pThis->hFileRawDevice = NIL_RTFILE;
1088	}
1089	if (pThis->hFileDevice != NIL_RTFILE)
1090	{
1091	RTFileClose(pThis->hFileDevice);
1092	pThis->hFileDevice = NIL_RTFILE;
1093	}
1094	RTFILE hFileRawDevice;
1095	int rc = drvHostBaseOpen(pThis, &hFileDevice, &hFileRawDevice, pThis->fReadOnlyConfig);
1096	#else
1097	int rc = drvHostBaseOpen(pThis, &hFileDevice, pThis->fReadOnlyConfig);
1098	#endif
1099	if (RT_FAILURE(rc))
1100	{
1101	if (!pThis->fReadOnlyConfig)
1102	{
1103	LogFlow(("%s-%d: drvHostBaseReopen: '%s' - retry readonly (%Rrc)\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->pszDeviceOpen, rc));
1104	#ifdef RT_OS_SOLARIS
1105	rc = drvHostBaseOpen(pThis, &hFileDevice, &hFileRawDevice, false);
1106	#else
1107	rc = drvHostBaseOpen(pThis, &hFileDevice, false);
1108	#endif
1109	}
1110	if (RT_FAILURE(rc))
1111	{
1112	LogFlow(("%s-%d: failed to open device '%s', rc=%Rrc\n",
1113	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->pszDevice, rc));
1114	return rc;
1115	}
1116	pThis->fReadOnly = true;
1117	}
1118	else
1119	pThis->fReadOnly = pThis->fReadOnlyConfig;
1120
1121	#ifdef RT_OS_SOLARIS
1122	if (pThis->hFileRawDevice != NIL_RTFILE)
1123	RTFileClose(pThis->hFileRawDevice);
1124	pThis->hFileRawDevice = hFileRawDevice;
1125	#endif
1126
1127	if (pThis->hFileDevice != NIL_RTFILE)
1128	RTFileClose(pThis->hFileDevice);
1129	pThis->hFileDevice = hFileDevice;
1130	#endif /* !RT_OS_DARWIN */
1131	return VINF_SUCCESS;
1132	}
1133
1134
1135	/**
1136	* Queries the media size.
1137	*
1138	* @returns VBox status code.
1139	* @param pThis Pointer to the instance data.
1140	* @param pcb Where to store the media size in bytes.
1141	*/
1142	static int drvHostBaseGetMediaSize(PDRVHOSTBASE pThis, uint64_t *pcb)
1143	{
1144	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_FREEBSD)
1145	/*
1146	* Try a READ_CAPACITY command...
1147	*/
1148	struct
1149	{
1150	uint32_t cBlocks;
1151	uint32_t cbBlock;
1152	} Buf = {0, 0};
1153	uint32_t cbBuf = sizeof(Buf);
1154	uint8_t abCmd[16] =
1155	{
1156	SCSI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
1157	0,0,0,0,0,0,0,0,0
1158	};
1159	int rc = DRVHostBaseScsiCmd(pThis, abCmd, 6, PDMBLOCKTXDIR_FROM_DEVICE, &Buf, &cbBuf, NULL, 0, 0);
1160	if (RT_SUCCESS(rc))
1161	{
1162	Assert(cbBuf == sizeof(Buf));
1163	Buf.cBlocks = RT_BE2H_U32(Buf.cBlocks);
1164	Buf.cbBlock = RT_BE2H_U32(Buf.cbBlock);
1165	//if (Buf.cbBlock > 2048) /* everyone else is doing this... check if it needed/right.*/
1166	// Buf.cbBlock = 2048;
1167	pThis->cbBlock = Buf.cbBlock;
1168
1169	pcb = (uint64_t)Buf.cBlocks Buf.cbBlock;
1170	}
1171	return rc;
1172
1173	#elif defined(RT_OS_SOLARIS)
1174	/*
1175	* Sun docs suggests using DKIOCGGEOM instead of DKIOCGMEDIAINFO, but
1176	* Sun themselves use DKIOCGMEDIAINFO for DVDs/CDs, and use DKIOCGGEOM
1177	* for secondary storage devices.
1178	*/
1179	struct dk_minfo MediaInfo;
1180	if (ioctl(RTFileToNative(pThis->hFileRawDevice), DKIOCGMEDIAINFO, &MediaInfo) == 0)
1181	{
1182	pcb = MediaInfo.dki_capacity (uint64_t)MediaInfo.dki_lbsize;
1183	return VINF_SUCCESS;
1184	}
1185	return RTFileSeek(pThis->hFileDevice, 0, RTFILE_SEEK_END, pcb);
1186
1187	#elif defined(RT_OS_WINDOWS)
1188	/* use NT api, retry a few times if the media is being verified. */
1189	IO_STATUS_BLOCK IoStatusBlock = {0};
1190	FILE_FS_SIZE_INFORMATION FsSize= {0};
1191	NTSTATUS rcNt = NtQueryVolumeInformationFile((HANDLE)RTFileToNative(pThis->hFileDevice), &IoStatusBlock,
1192	&FsSize, sizeof(FsSize), FileFsSizeInformation);
1193	int cRetries = 5;
1194	while (rcNt == STATUS_VERIFY_REQUIRED && cRetries-- > 0)
1195	{
1196	RTThreadSleep(10);
1197	rcNt = NtQueryVolumeInformationFile((HANDLE)RTFileToNative(pThis->hFileDevice), &IoStatusBlock,
1198	&FsSize, sizeof(FsSize), FileFsSizeInformation);
1199	}
1200	if (rcNt >= 0)
1201	{
1202	pcb = FsSize.TotalAllocationUnits.QuadPart FsSize.BytesPerSector;
1203	return VINF_SUCCESS;
1204	}
1205
1206	/* convert nt status code to VBox status code. */
1207	/** @todo Make conversion function!. */
1208	int rc = VERR_GENERAL_FAILURE;
1209	switch (rcNt)
1210	{
1211	case STATUS_NO_MEDIA_IN_DEVICE: rc = VERR_MEDIA_NOT_PRESENT; break;
1212	case STATUS_VERIFY_REQUIRED: rc = VERR_TRY_AGAIN; break;
1213	}
1214	LogFlow(("drvHostBaseGetMediaSize: NtQueryVolumeInformationFile -> %#lx\n", rcNt, rc));
1215	return rc;
1216	#else
1217	return RTFileSeek(pThis->hFileDevice, 0, RTFILE_SEEK_END, pcb);
1218	#endif
1219	}
1220
1221
1222	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_FREEBSD)
1223	/**
1224	* Execute a SCSI command.
1225	*
1226	* @param pThis The instance data.
1227	* @param pbCmd Pointer to the SCSI command.
1228	* @param cbCmd The size of the SCSI command.
1229	* @param enmTxDir The transfer direction.
1230	* @param pvBuf The buffer. Can be NULL if enmTxDir is PDMBLOCKTXDIR_NONE.
1231	* @param pcbBuf Where to get the buffer size from and put the actual transfer size. Can be NULL.
1232	* @param pbSense Where to put the sense data. Can be NULL.
1233	* @param cbSense Size of the sense data buffer.
1234	* @param cTimeoutMillies The timeout. 0 mean the default timeout.
1235	*
1236	* @returns VINF_SUCCESS on success (no sense code).
1237	* @returns VERR_UNRESOLVED_ERROR if sense code is present.
1238	* @returns Some other VBox status code on failures without sense code.
1239	*
1240	* @todo Fix VERR_UNRESOLVED_ERROR abuse.
1241	*/
1242	DECLCALLBACK(int) DRVHostBaseScsiCmd(PDRVHOSTBASE pThis, const uint8_t *pbCmd, size_t cbCmd, PDMBLOCKTXDIR enmTxDir,
1243	void pvBuf, uint32_t pcbBuf, uint8_t *pbSense, size_t cbSense, uint32_t cTimeoutMillies)
1244	{
1245	/*
1246	* Minimal input validation.
1247	*/
1248	Assert(enmTxDir == PDMBLOCKTXDIR_NONE \|\| enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE \|\| enmTxDir == PDMBLOCKTXDIR_TO_DEVICE);
1249	Assert(!pvBuf \|\| pcbBuf);
1250	Assert(pvBuf \|\| enmTxDir == PDMBLOCKTXDIR_NONE);
1251	Assert(pbSense \|\| !cbSense);
1252	AssertPtr(pbCmd);
1253	Assert(cbCmd <= 16 && cbCmd >= 1);
1254	const uint32_t cbBuf = pcbBuf ? *pcbBuf : 0;
1255	if (pcbBuf)
1256	*pcbBuf = 0;
1257
1258	# ifdef RT_OS_DARWIN
1259	Assert(pThis->ppScsiTaskDI);
1260
1261	int rc = VERR_GENERAL_FAILURE;
1262	SCSITaskInterface *ppScsiTaskI = (pThis->ppScsiTaskDI)->CreateSCSITask(pThis->ppScsiTaskDI);
1263	if (!ppScsiTaskI)
1264	return VERR_NO_MEMORY;
1265	do
1266	{
1267	/* Setup the scsi command. */
1268	SCSICommandDescriptorBlock cdb = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
1269	memcpy(&cdb[0], pbCmd, cbCmd);
1270	IOReturn irc = (*ppScsiTaskI)->SetCommandDescriptorBlock(ppScsiTaskI, cdb, cbCmd);
1271	AssertBreak(irc == kIOReturnSuccess);
1272
1273	/* Setup the buffer. */
1274	if (enmTxDir == PDMBLOCKTXDIR_NONE)
1275	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, NULL, 0, 0, kSCSIDataTransfer_NoDataTransfer);
1276	else
1277	{
1278	IOVirtualRange Range = { (IOVirtualAddress)pvBuf, cbBuf };
1279	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, &Range, 1, cbBuf,
1280	enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE
1281	? kSCSIDataTransfer_FromTargetToInitiator
1282	: kSCSIDataTransfer_FromInitiatorToTarget);
1283	}
1284	AssertBreak(irc == kIOReturnSuccess);
1285
1286	/* Set the timeout. */
1287	irc = (ppScsiTaskI)->SetTimeoutDuration(ppScsiTaskI, cTimeoutMillies ? cTimeoutMillies : 30000 /ms*/);
1288	AssertBreak(irc == kIOReturnSuccess);
1289
1290	/* Execute the command and get the response. */
1291	SCSI_Sense_Data SenseData = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
1292	SCSIServiceResponse ServiceResponse = kSCSIServiceResponse_Request_In_Process;
1293	SCSITaskStatus TaskStatus = kSCSITaskStatus_GOOD;
1294	UInt64 cbReturned = 0;
1295	irc = (*ppScsiTaskI)->ExecuteTaskSync(ppScsiTaskI, &SenseData, &TaskStatus, &cbReturned);
1296	AssertBreak(irc == kIOReturnSuccess);
1297	if (pcbBuf)
1298	*pcbBuf = (int32_t)cbReturned;
1299
1300	irc = (*ppScsiTaskI)->GetSCSIServiceResponse(ppScsiTaskI, &ServiceResponse);
1301	AssertBreak(irc == kIOReturnSuccess);
1302	AssertBreak(ServiceResponse == kSCSIServiceResponse_TASK_COMPLETE);
1303
1304	if (TaskStatus == kSCSITaskStatus_GOOD)
1305	rc = VINF_SUCCESS;
1306	else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
1307	&& pbSense)
1308	{
1309	memset(pbSense, 0, cbSense); /* lazy */
1310	memcpy(pbSense, &SenseData, RT_MIN(sizeof(SenseData), cbSense));
1311	rc = VERR_UNRESOLVED_ERROR;
1312	}
1313	/** @todo convert sense codes when caller doesn't wish to do this himself. */
1314	/*else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
1315	&& SenseData.ADDITIONAL_SENSE_CODE == 0x3A)
1316	rc = VERR_MEDIA_NOT_PRESENT; */
1317	else
1318	{
1319	rc = enmTxDir == PDMBLOCKTXDIR_NONE
1320	? VERR_DEV_IO_ERROR
1321	: enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE
1322	? VERR_READ_ERROR
1323	: VERR_WRITE_ERROR;
1324	if (pThis->cLogRelErrors++ < 10)
1325	LogRel(("DVD scsi error: cmd={%.*Rhxs} TaskStatus=%#x key=%#x ASC=%#x ASCQ=%#x (%Rrc)\n",
1326	cbCmd, pbCmd, TaskStatus, SenseData.SENSE_KEY, SenseData.ADDITIONAL_SENSE_CODE,
1327	SenseData.ADDITIONAL_SENSE_CODE_QUALIFIER, rc));
1328	}
1329	} while (0);
1330
1331	(*ppScsiTaskI)->Release(ppScsiTaskI);
1332
1333	# elif defined(RT_OS_FREEBSD)
1334	int rc = VINF_SUCCESS;
1335	int rcBSD = 0;
1336	union ccb DeviceCCB;
1337	union ccb *pDeviceCCB = &DeviceCCB;
1338	u_int32_t fFlags;
1339
1340	memset(pDeviceCCB, 0, sizeof(DeviceCCB));
1341	pDeviceCCB->ccb_h.path_id = pThis->ScsiBus;
1342	pDeviceCCB->ccb_h.target_id = pThis->ScsiTargetID;
1343	pDeviceCCB->ccb_h.target_lun = pThis->ScsiLunID;
1344
1345	/* The SCSI INQUIRY command can't be passed through directly. */
1346	if (pbCmd[0] == SCSI_INQUIRY)
1347	{
1348	pDeviceCCB->ccb_h.func_code = XPT_GDEV_TYPE;
1349
1350	rcBSD = ioctl(RTFileToNative(pThis->hFileDevice), CAMIOCOMMAND, pDeviceCCB);
1351	if (!rcBSD)
1352	{
1353	uint32_t cbCopy = cbBuf < sizeof(struct scsi_inquiry_data)
1354	? cbBuf
1355	: sizeof(struct scsi_inquiry_data);;
1356	memcpy(pvBuf, &pDeviceCCB->cgd.inq_data, cbCopy);
1357	memset(pbSense, 0, cbSense);
1358
1359	if (pcbBuf)
1360	*pcbBuf = cbCopy;
1361	}
1362	else
1363	rc = RTErrConvertFromErrno(errno);
1364	}
1365	else
1366	{
1367	/* Copy the CDB. */
1368	memcpy(&pDeviceCCB->csio.cdb_io.cdb_bytes, pbCmd, cbCmd);
1369
1370	/* Set direction. */
1371	if (enmTxDir == PDMBLOCKTXDIR_NONE)
1372	fFlags = CAM_DIR_NONE;
1373	else if (enmTxDir == PDMBLOCKTXDIR_FROM_DEVICE)
1374	fFlags = CAM_DIR_IN;
1375	else
1376	fFlags = CAM_DIR_OUT;
1377
1378	fFlags \|= CAM_DEV_QFRZDIS;
1379
1380	cam_fill_csio(&pDeviceCCB->csio, 1, NULL, fFlags, MSG_SIMPLE_Q_TAG,
1381	(u_int8_t *)pvBuf, cbBuf, cbSense, cbCmd,
1382	cTimeoutMillies ? cTimeoutMillies : 30000/* timeout */);
1383
1384	/* Send command */
1385	rcBSD = ioctl(RTFileToNative(pThis->hFileDevice), CAMIOCOMMAND, pDeviceCCB);
1386	if (!rcBSD)
1387	{
1388	switch (pDeviceCCB->ccb_h.status & CAM_STATUS_MASK)
1389	{
1390	case CAM_REQ_CMP:
1391	rc = VINF_SUCCESS;
1392	break;
1393	case CAM_SEL_TIMEOUT:
1394	rc = VERR_DEV_IO_ERROR;
1395	break;
1396	case CAM_CMD_TIMEOUT:
1397	rc = VERR_TIMEOUT;
1398	break;
1399	default:
1400	rc = VERR_DEV_IO_ERROR;
1401	}
1402
1403	if (pcbBuf)
1404	*pcbBuf = cbBuf - pDeviceCCB->csio.resid;
1405
1406	if (pbSense)
1407	memcpy(pbSense, &pDeviceCCB->csio.sense_data,
1408	cbSense - pDeviceCCB->csio.sense_resid);
1409	}
1410	else
1411	rc = RTErrConvertFromErrno(errno);
1412	}
1413	# endif
1414
1415	return rc;
1416	}
1417	#endif
1418
1419
1420	/**
1421	* Media present.
1422	* Query the size and notify the above driver / device.
1423	*
1424	* @param pThis The instance data.
1425	*/
1426	int DRVHostBaseMediaPresent(PDRVHOSTBASE pThis)
1427	{
1428	/*
1429	* Open the drive.
1430	*/
1431	int rc = drvHostBaseReopen(pThis);
1432	if (RT_FAILURE(rc))
1433	return rc;
1434
1435	/*
1436	* Determine the size.
1437	*/
1438	uint64_t cb;
1439	rc = pThis->pfnGetMediaSize(pThis, &cb);
1440	if (RT_FAILURE(rc))
1441	{
1442	LogFlow(("%s-%d: failed to figure media size of %s, rc=%Rrc\n",
1443	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->pszDevice, rc));
1444	return rc;
1445	}
1446
1447	/*
1448	* Update the data and inform the unit.
1449	*/
1450	pThis->cbSize = cb;
1451	pThis->fMediaPresent = true;
1452	if (pThis->pDrvMountNotify)
1453	pThis->pDrvMountNotify->pfnMountNotify(pThis->pDrvMountNotify);
1454	LogFlow(("%s-%d: drvHostBaseMediaPresent: cbSize=%lld (%#llx)\n",
1455	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, pThis->cbSize, pThis->cbSize));
1456	return VINF_SUCCESS;
1457	}
1458
1459
1460	/**
1461	* Media no longer present.
1462	* @param pThis The instance data.
1463	*/
1464	void DRVHostBaseMediaNotPresent(PDRVHOSTBASE pThis)
1465	{
1466	pThis->fMediaPresent = false;
1467	pThis->fLocked = false;
1468	pThis->PCHSGeometry.cCylinders = 0;
1469	pThis->PCHSGeometry.cHeads = 0;
1470	pThis->PCHSGeometry.cSectors = 0;
1471	pThis->LCHSGeometry.cCylinders = 0;
1472	pThis->LCHSGeometry.cHeads = 0;
1473	pThis->LCHSGeometry.cSectors = 0;
1474	if (pThis->pDrvMountNotify)
1475	pThis->pDrvMountNotify->pfnUnmountNotify(pThis->pDrvMountNotify);
1476	}
1477
1478
1479	#ifdef RT_OS_WINDOWS
1480
1481	/**
1482	* Window procedure for the invisible window used to catch the WM_DEVICECHANGE broadcasts.
1483	*/
1484	static LRESULT CALLBACK DeviceChangeWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1485	{
1486	Log2(("DeviceChangeWindowProc: hwnd=%08x uMsg=%08x\n", hwnd, uMsg));
1487	if (uMsg == WM_DESTROY)
1488	{
1489	PDRVHOSTBASE pThis = (PDRVHOSTBASE)GetWindowLong(hwnd, GWLP_USERDATA);
1490	if (pThis)
1491	ASMAtomicXchgSize(&pThis->hwndDeviceChange, NULL);
1492	PostQuitMessage(0);
1493	}
1494
1495	if (uMsg != WM_DEVICECHANGE)
1496	return DefWindowProc(hwnd, uMsg, wParam, lParam);
1497
1498	PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
1499	PDRVHOSTBASE pThis = (PDRVHOSTBASE)GetWindowLongPtr(hwnd, GWLP_USERDATA);
1500	Assert(pThis);
1501	if (pThis == NULL)
1502	return 0;
1503
1504	switch (wParam)
1505	{
1506	case DBT_DEVICEARRIVAL:
1507	case DBT_DEVICEREMOVECOMPLETE:
1508	// Check whether a CD or DVD was inserted into or removed from a drive.
1509	if (lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME)
1510	{
1511	PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
1512	if ( (lpdbv->dbcv_flags & DBTF_MEDIA)
1513	&& (pThis->fUnitMask & lpdbv->dbcv_unitmask))
1514	{
1515	RTCritSectEnter(&pThis->CritSect);
1516	if (wParam == DBT_DEVICEARRIVAL)
1517	{
1518	int cRetries = 10;
1519	int rc = DRVHostBaseMediaPresent(pThis);
1520	while (RT_FAILURE(rc) && cRetries-- > 0)
1521	{
1522	RTThreadSleep(50);
1523	rc = DRVHostBaseMediaPresent(pThis);
1524	}
1525	}
1526	else
1527	DRVHostBaseMediaNotPresent(pThis);
1528	RTCritSectLeave(&pThis->CritSect);
1529	}
1530	}
1531	break;
1532	}
1533	return TRUE;
1534	}
1535
1536	#endif /* RT_OS_WINDOWS */
1537
1538
1539	/**
1540	* This thread will periodically poll the device for media presence.
1541	*
1542	* @returns Ignored.
1543	* @param ThreadSelf Handle of this thread. Ignored.
1544	* @param pvUser Pointer to the driver instance structure.
1545	*/
1546	static DECLCALLBACK(int) drvHostBaseMediaThread(RTTHREAD ThreadSelf, void *pvUser)
1547	{
1548	PDRVHOSTBASE pThis = (PDRVHOSTBASE)pvUser;
1549	LogFlow(("%s-%d: drvHostBaseMediaThread: ThreadSelf=%p pvUser=%p\n",
1550	pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, ThreadSelf, pvUser));
1551	#ifdef RT_OS_WINDOWS
1552	static WNDCLASS s_classDeviceChange = {0};
1553	static ATOM s_hAtomDeviceChange = 0;
1554
1555	/*
1556	* Register custom window class.
1557	*/
1558	if (s_hAtomDeviceChange == 0)
1559	{
1560	memset(&s_classDeviceChange, 0, sizeof(s_classDeviceChange));
1561	s_classDeviceChange.lpfnWndProc = DeviceChangeWindowProc;
1562	s_classDeviceChange.lpszClassName = "VBOX_DeviceChangeClass";
1563	s_classDeviceChange.hInstance = GetModuleHandle("VBOXDD.DLL");
1564	Assert(s_classDeviceChange.hInstance);
1565	s_hAtomDeviceChange = RegisterClassA(&s_classDeviceChange);
1566	Assert(s_hAtomDeviceChange);
1567	}
1568
1569	/*
1570	* Create Window w/ the pThis as user data.
1571	*/
1572	HWND hwnd = CreateWindow((LPCTSTR)s_hAtomDeviceChange, "", WS_POPUP, 0, 0, 0, 0, 0, 0, s_classDeviceChange.hInstance, 0);
1573	AssertMsg(hwnd, ("CreateWindow failed with %d\n", GetLastError()));
1574	SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)pThis);
1575
1576	/*
1577	* Signal the waiting EMT thread that everything went fine.
1578	*/
1579	ASMAtomicXchgSize(&pThis->hwndDeviceChange, hwnd);
1580	RTThreadUserSignal(ThreadSelf);
1581	if (!hwnd)
1582	{
1583	LogFlow(("%s-%d: drvHostBaseMediaThread: returns VERR_GENERAL_FAILURE\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
1584	return VERR_GENERAL_FAILURE;
1585	}
1586	LogFlow(("%s-%d: drvHostBaseMediaThread: Created hwndDeviceChange=%p\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance, hwnd));
1587
1588	/*
1589	* Message pump.
1590	*/
1591	MSG Msg;
1592	BOOL fRet;
1593	while ((fRet = GetMessage(&Msg, NULL, 0, 0)) != FALSE)
1594	{
1595	if (fRet != -1)
1596	{
1597	TranslateMessage(&Msg);
1598	DispatchMessage(&Msg);
1599	}
1600	//else: handle the error and possibly exit
1601	}
1602	Assert(!pThis->hwndDeviceChange);
1603
1604	#else /* !RT_OS_WINDOWS */
1605	bool fFirst = true;
1606	int cRetries = 10;
1607	while (!pThis->fShutdownPoller)
1608	{
1609	/*
1610	* Perform the polling (unless we've run out of 50ms retries).
1611	*/
1612	if ( pThis->pfnPoll
1613	&& cRetries-- > 0)
1614	{
1615
1616	int rc = pThis->pfnPoll(pThis);
1617	if (RT_FAILURE(rc))
1618	{
1619	RTSemEventWait(pThis->EventPoller, 50);
1620	continue;
1621	}
1622	}
1623
1624	/*
1625	* Signal EMT after the first go.
1626	*/
1627	if (fFirst)
1628	{
1629	RTThreadUserSignal(ThreadSelf);
1630	fFirst = false;
1631	}
1632
1633	/*
1634	* Sleep.
1635	*/
1636	int rc = RTSemEventWait(pThis->EventPoller, pThis->cMilliesPoller);
1637	if ( RT_FAILURE(rc)
1638	&& rc != VERR_TIMEOUT)
1639	{
1640	AssertMsgFailed(("rc=%Rrc\n", rc));
1641	pThis->ThreadPoller = NIL_RTTHREAD;
1642	LogFlow(("drvHostBaseMediaThread: returns %Rrc\n", rc));
1643	return rc;
1644	}
1645	cRetries = 10;
1646	}
1647
1648	#endif /* !RT_OS_WINDOWS */
1649
1650	/* (Don't clear the thread handle here, the destructor thread is using it to wait.) */
1651	LogFlow(("%s-%d: drvHostBaseMediaThread: returns VINF_SUCCESS\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
1652	return VINF_SUCCESS;
1653	}
1654
1655	/* -=-=-=-=- driver interface -=-=-=-=- */
1656
1657
1658	/**
1659	* Done state load operation.
1660	*
1661	* @returns VBox load code.
1662	* @param pDrvIns Driver instance of the driver which registered the data unit.
1663	* @param pSSM SSM operation handle.
1664	*/
1665	static DECLCALLBACK(int) drvHostBaseLoadDone(PPDMDRVINS pDrvIns, PSSMHANDLE pSSM)
1666	{
1667	PDRVHOSTBASE pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTBASE);
1668	LogFlow(("%s-%d: drvHostBaseMediaThread:\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
1669	RTCritSectEnter(&pThis->CritSect);
1670
1671	/*
1672	* Tell the device/driver above us that the media status is uncertain.
1673	*/
1674	if (pThis->pDrvMountNotify)
1675	{
1676	pThis->pDrvMountNotify->pfnUnmountNotify(pThis->pDrvMountNotify);
1677	if (pThis->fMediaPresent)
1678	pThis->pDrvMountNotify->pfnMountNotify(pThis->pDrvMountNotify);
1679	}
1680
1681	RTCritSectLeave(&pThis->CritSect);
1682	return VINF_SUCCESS;
1683	}
1684
1685
1686	/** @copydoc FNPDMDRVDESTRUCT */
1687	DECLCALLBACK(void) DRVHostBaseDestruct(PPDMDRVINS pDrvIns)
1688	{
1689	PDRVHOSTBASE pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTBASE);
1690	LogFlow(("%s-%d: drvHostBaseDestruct: iInstance=%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, pDrvIns->iInstance));
1691
1692	/*
1693	* Terminate the thread.
1694	*/
1695	if (pThis->ThreadPoller != NIL_RTTHREAD)
1696	{
1697	pThis->fShutdownPoller = true;
1698	int rc;
1699	int cTimes = 50;
1700	do
1701	{
1702	#ifdef RT_OS_WINDOWS
1703	if (pThis->hwndDeviceChange)
1704	PostMessage(pThis->hwndDeviceChange, WM_CLOSE, 0, 0); /* default win proc will destroy the window */
1705	#else
1706	RTSemEventSignal(pThis->EventPoller);
1707	#endif
1708	rc = RTThreadWait(pThis->ThreadPoller, 100, NULL);
1709	} while (cTimes-- > 0 && rc == VERR_TIMEOUT);
1710
1711	if (!rc)
1712	pThis->ThreadPoller = NIL_RTTHREAD;
1713	}
1714
1715	/*
1716	* Unlock the drive if we've locked it or we're in passthru mode.
1717	*/
1718	#ifdef RT_OS_DARWIN
1719	if ( ( pThis->fLocked
1720	\|\| pThis->IBlock.pfnSendCmd)
1721	&& pThis->ppScsiTaskDI
1722	#else /** @todo Check if the other guys can mix pfnDoLock with scsi passthru.
1723	* (We're currently not unlocking the device after use. See todo in DevATA.cpp.) */
1724	if ( pThis->fLocked
1725	&& pThis->hFileDevice != NIL_RTFILE
1726	#endif
1727	&& pThis->pfnDoLock)
1728	{
1729	int rc = pThis->pfnDoLock(pThis, false);
1730	if (RT_SUCCESS(rc))
1731	pThis->fLocked = false;
1732	}
1733
1734	/*
1735	* Cleanup the other resources.
1736	*/
1737	#ifdef RT_OS_WINDOWS
1738	if (pThis->hwndDeviceChange)
1739	{
1740	if (SetWindowLongPtr(pThis->hwndDeviceChange, GWLP_USERDATA, 0) == (LONG_PTR)pThis)
1741	PostMessage(pThis->hwndDeviceChange, WM_CLOSE, 0, 0); /* default win proc will destroy the window */
1742	pThis->hwndDeviceChange = NULL;
1743	}
1744	#else
1745	if (pThis->EventPoller != NULL)
1746	{
1747	RTSemEventDestroy(pThis->EventPoller);
1748	pThis->EventPoller = NULL;
1749	}
1750	#endif
1751
1752	#ifdef RT_OS_DARWIN
1753	/*
1754	* The unclaiming doesn't seem to mean much, the DVD is actually
1755	* remounted when we release exclusive access. I'm not quite sure
1756	* if I should put the unclaim first or not...
1757	*
1758	* Anyway, that it's automatically remounted very good news for us,
1759	* because that means we don't have to mess with that ourselves. Of
1760	* course there is the unlikely scenario that we've succeeded in claiming
1761	* and umount the DVD but somehow failed to gain exclusive scsi access...
1762	*/
1763	if (pThis->ppScsiTaskDI)
1764	{
1765	LogFlow(("%s-%d: releasing exclusive scsi access!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1766	(*pThis->ppScsiTaskDI)->ReleaseExclusiveAccess(pThis->ppScsiTaskDI);
1767	(*pThis->ppScsiTaskDI)->Release(pThis->ppScsiTaskDI);
1768	pThis->ppScsiTaskDI = NULL;
1769	}
1770	if (pThis->pDADisk)
1771	{
1772	LogFlow(("%s-%d: unclaiming the disk!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1773	DADiskUnclaim(pThis->pDADisk);
1774	CFRelease(pThis->pDADisk);
1775	pThis->pDADisk = NULL;
1776	}
1777	if (pThis->ppMMCDI)
1778	{
1779	LogFlow(("%s-%d: releasing the MMC object!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1780	(*pThis->ppMMCDI)->Release(pThis->ppMMCDI);
1781	pThis->ppMMCDI = NULL;
1782	}
1783	if (pThis->MasterPort)
1784	{
1785	mach_port_deallocate(mach_task_self(), pThis->MasterPort);
1786	pThis->MasterPort = NULL;
1787	}
1788	if (pThis->pDASession)
1789	{
1790	LogFlow(("%s-%d: releasing the DA session!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1791	CFRelease(pThis->pDASession);
1792	pThis->pDASession = NULL;
1793	}
1794	#else
1795	if (pThis->hFileDevice != NIL_RTFILE)
1796	{
1797	int rc = RTFileClose(pThis->hFileDevice);
1798	AssertRC(rc);
1799	pThis->hFileDevice = NIL_RTFILE;
1800	}
1801	#endif
1802
1803	#ifdef RT_OS_SOLARIS
1804	if (pThis->hFileRawDevice != NIL_RTFILE)
1805	{
1806	int rc = RTFileClose(pThis->hFileRawDevice);
1807	AssertRC(rc);
1808	pThis->hFileRawDevice = NIL_RTFILE;
1809	}
1810
1811	if (pThis->pszRawDeviceOpen)
1812	{
1813	RTStrFree(pThis->pszRawDeviceOpen);
1814	pThis->pszRawDeviceOpen = NULL;
1815	}
1816	#endif
1817
1818	if (pThis->pszDevice)
1819	{
1820	MMR3HeapFree(pThis->pszDevice);
1821	pThis->pszDevice = NULL;
1822	}
1823
1824	if (pThis->pszDeviceOpen)
1825	{
1826	RTStrFree(pThis->pszDeviceOpen);
1827	pThis->pszDeviceOpen = NULL;
1828	}
1829
1830	/* Forget about the notifications. */
1831	pThis->pDrvMountNotify = NULL;
1832
1833	/* Leave the instance operational if this is just a cleanup of the state
1834	* after an attach error happened. So don't destroy the critsect then. */
1835	if (!pThis->fKeepInstance && RTCritSectIsInitialized(&pThis->CritSect))
1836	RTCritSectDelete(&pThis->CritSect);
1837	LogFlow(("%s-%d: drvHostBaseDestruct completed\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1838	}
1839
1840
1841	/**
1842	* Initializes the instance data (init part 1).
1843	*
1844	* The driver which derives from this base driver will override function pointers after
1845	* calling this method, and complete the construction by calling DRVHostBaseInitFinish().
1846	*
1847	* On failure call DRVHostBaseDestruct().
1848	*
1849	* @returns VBox status code.
1850	* @param pDrvIns Driver instance.
1851	* @param pCfg Configuration handle.
1852	* @param enmType Device type.
1853	*/
1854	int DRVHostBaseInitData(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, PDMBLOCKTYPE enmType)
1855	{
1856	PDRVHOSTBASE pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTBASE);
1857	LogFlow(("%s-%d: DRVHostBaseInitData: iInstance=%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, pDrvIns->iInstance));
1858
1859	/*
1860	* Initialize most of the data members.
1861	*/
1862	pThis->pDrvIns = pDrvIns;
1863	pThis->fKeepInstance = false;
1864	pThis->ThreadPoller = NIL_RTTHREAD;
1865	#ifdef RT_OS_DARWIN
1866	pThis->MasterPort = NULL;
1867	pThis->ppMMCDI = NULL;
1868	pThis->ppScsiTaskDI = NULL;
1869	pThis->cbBlock = 0;
1870	pThis->pDADisk = NULL;
1871	pThis->pDASession = NULL;
1872	#else
1873	pThis->hFileDevice = NIL_RTFILE;
1874	#endif
1875	#ifdef RT_OS_SOLARIS
1876	pThis->hFileRawDevice = NIL_RTFILE;
1877	#endif
1878	pThis->enmType = enmType;
1879	//pThis->cErrors = 0;
1880
1881	pThis->pfnGetMediaSize = drvHostBaseGetMediaSize;
1882
1883	/* IBase. */
1884	pDrvIns->IBase.pfnQueryInterface = drvHostBaseQueryInterface;
1885
1886	/* IBlock. */
1887	pThis->IBlock.pfnRead = drvHostBaseRead;
1888	pThis->IBlock.pfnWrite = drvHostBaseWrite;
1889	pThis->IBlock.pfnFlush = drvHostBaseFlush;
1890	pThis->IBlock.pfnIsReadOnly = drvHostBaseIsReadOnly;
1891	pThis->IBlock.pfnGetSize = drvHostBaseGetSize;
1892	pThis->IBlock.pfnGetType = drvHostBaseGetType;
1893	pThis->IBlock.pfnGetUuid = drvHostBaseGetUuid;
1894
1895	/* IBlockBios. */
1896	pThis->IBlockBios.pfnGetPCHSGeometry = drvHostBaseGetPCHSGeometry;
1897	pThis->IBlockBios.pfnSetPCHSGeometry = drvHostBaseSetPCHSGeometry;
1898	pThis->IBlockBios.pfnGetLCHSGeometry = drvHostBaseGetLCHSGeometry;
1899	pThis->IBlockBios.pfnSetLCHSGeometry = drvHostBaseSetLCHSGeometry;
1900	pThis->IBlockBios.pfnIsVisible = drvHostBaseIsVisible;
1901	pThis->IBlockBios.pfnGetType = drvHostBaseBiosGetType;
1902
1903	/* IMount. */
1904	pThis->IMount.pfnMount = drvHostBaseMount;
1905	pThis->IMount.pfnUnmount = drvHostBaseUnmount;
1906	pThis->IMount.pfnIsMounted = drvHostBaseIsMounted;
1907	pThis->IMount.pfnLock = drvHostBaseLock;
1908	pThis->IMount.pfnUnlock = drvHostBaseUnlock;
1909	pThis->IMount.pfnIsLocked = drvHostBaseIsLocked;
1910
1911	/*
1912	* Get the IBlockPort & IMountNotify interfaces of the above driver/device.
1913	*/
1914	pThis->pDrvBlockPort = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIBLOCKPORT);
1915	if (!pThis->pDrvBlockPort)
1916	{
1917	AssertMsgFailed(("Configuration error: No block port interface above!\n"));
1918	return VERR_PDM_MISSING_INTERFACE_ABOVE;
1919	}
1920	pThis->pDrvMountNotify = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIMOUNTNOTIFY);
1921
1922	/*
1923	* Query configuration.
1924	*/
1925	/* Device */
1926	int rc = CFGMR3QueryStringAlloc(pCfg, "Path", &pThis->pszDevice);
1927	if (RT_FAILURE(rc))
1928	{
1929	AssertMsgFailed(("Configuration error: query for \"Path\" string returned %Rra.\n", rc));
1930	return rc;
1931	}
1932
1933	/* Mountable */
1934	uint32_t u32;
1935	rc = CFGMR3QueryU32(pCfg, "Interval", &u32);
1936	if (RT_SUCCESS(rc))
1937	pThis->cMilliesPoller = u32;
1938	else if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1939	pThis->cMilliesPoller = 1000;
1940	else if (RT_FAILURE(rc))
1941	{
1942	AssertMsgFailed(("Configuration error: Query \"Mountable\" resulted in %Rrc.\n", rc));
1943	return rc;
1944	}
1945
1946	/* ReadOnly */
1947	rc = CFGMR3QueryBool(pCfg, "ReadOnly", &pThis->fReadOnlyConfig);
1948	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1949	pThis->fReadOnlyConfig = enmType == PDMBLOCKTYPE_DVD \|\| enmType == PDMBLOCKTYPE_CDROM ? true : false;
1950	else if (RT_FAILURE(rc))
1951	{
1952	AssertMsgFailed(("Configuration error: Query \"ReadOnly\" resulted in %Rrc.\n", rc));
1953	return rc;
1954	}
1955
1956	/* Locked */
1957	rc = CFGMR3QueryBool(pCfg, "Locked", &pThis->fLocked);
1958	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1959	pThis->fLocked = false;
1960	else if (RT_FAILURE(rc))
1961	{
1962	AssertMsgFailed(("Configuration error: Query \"Locked\" resulted in %Rrc.\n", rc));
1963	return rc;
1964	}
1965
1966	/* BIOS visible */
1967	rc = CFGMR3QueryBool(pCfg, "BIOSVisible", &pThis->fBiosVisible);
1968	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1969	pThis->fBiosVisible = true;
1970	else if (RT_FAILURE(rc))
1971	{
1972	AssertMsgFailed(("Configuration error: Query \"BIOSVisible\" resulted in %Rrc.\n", rc));
1973	return rc;
1974	}
1975
1976	/* Uuid */
1977	char *psz;
1978	rc = CFGMR3QueryStringAlloc(pCfg, "Uuid", &psz);
1979	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1980	RTUuidClear(&pThis->Uuid);
1981	else if (RT_SUCCESS(rc))
1982	{
1983	rc = RTUuidFromStr(&pThis->Uuid, psz);
1984	if (RT_FAILURE(rc))
1985	{
1986	AssertMsgFailed(("Configuration error: Uuid from string failed on \"%s\", rc=%Rrc.\n", psz, rc));
1987	MMR3HeapFree(psz);
1988	return rc;
1989	}
1990	MMR3HeapFree(psz);
1991	}
1992	else
1993	{
1994	AssertMsgFailed(("Configuration error: Failed to obtain the uuid, rc=%Rrc.\n", rc));
1995	return rc;
1996	}
1997
1998	/* Define whether attach failure is an error (default) or not. */
1999	bool fAttachFailError;
2000	rc = CFGMR3QueryBool(pCfg, "AttachFailError", &fAttachFailError);
2001	if (RT_FAILURE(rc))
2002	fAttachFailError = true;
2003	pThis->fAttachFailError = fAttachFailError;
2004
2005	/* name to open & watch for */
2006	#ifdef RT_OS_WINDOWS
2007	int iBit = RT_C_TO_UPPER(pThis->pszDevice[0]) - 'A';
2008	if ( iBit > 'Z' - 'A'
2009	\|\| pThis->pszDevice[1] != ':'
2010	\|\| pThis->pszDevice[2])
2011	{
2012	AssertMsgFailed(("Configuration error: Invalid drive specification: '%s'\n", pThis->pszDevice));
2013	return VERR_INVALID_PARAMETER;
2014	}
2015	pThis->fUnitMask = 1 << iBit;
2016	RTStrAPrintf(&pThis->pszDeviceOpen, "\\\\.\\%s", pThis->pszDevice);
2017
2018	#elif defined(RT_OS_SOLARIS)
2019	char *pszBlockDevName = getfullblkname(pThis->pszDevice);
2020	if (!pszBlockDevName)
2021	return VERR_NO_MEMORY;
2022	pThis->pszDeviceOpen = RTStrDup(pszBlockDevName); /* for RTStrFree() */
2023	free(pszBlockDevName);
2024	pThis->pszRawDeviceOpen = RTStrDup(pThis->pszDevice);
2025
2026	#else
2027	pThis->pszDeviceOpen = RTStrDup(pThis->pszDevice);
2028	#endif
2029
2030	if (!pThis->pszDeviceOpen)
2031	return VERR_NO_MEMORY;
2032
2033	return VINF_SUCCESS;
2034	}
2035
2036
2037	/**
2038	* Do the 2nd part of the init after the derived driver has overridden the defaults.
2039	*
2040	* On failure call DRVHostBaseDestruct().
2041	*
2042	* @returns VBox status code.
2043	* @param pThis Pointer to the instance data.
2044	*/
2045	int DRVHostBaseInitFinish(PDRVHOSTBASE pThis)
2046	{
2047	int src = VINF_SUCCESS;
2048	PPDMDRVINS pDrvIns = pThis->pDrvIns;
2049
2050	/* log config summary */
2051	Log(("%s-%d: pszDevice='%s' (%s) cMilliesPoller=%d fReadOnlyConfig=%d fLocked=%d fBIOSVisible=%d Uuid=%RTuuid\n",
2052	pDrvIns->pReg->szName, pDrvIns->iInstance, pThis->pszDevice, pThis->pszDeviceOpen, pThis->cMilliesPoller,
2053	pThis->fReadOnlyConfig, pThis->fLocked, pThis->fBiosVisible, &pThis->Uuid));
2054
2055	/*
2056	* Check that there are no drivers below us.
2057	*/
2058	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
2059	("Configuration error: Not possible to attach anything to this driver!\n"),
2060	VERR_PDM_DRVINS_NO_ATTACH);
2061
2062	/*
2063	* Register saved state.
2064	*/
2065	int rc = PDMDrvHlpSSMRegisterLoadDone(pDrvIns, drvHostBaseLoadDone);
2066	if (RT_FAILURE(rc))
2067	return rc;
2068
2069	/*
2070	* Verify type.
2071	*/
2072	#ifdef RT_OS_WINDOWS
2073	UINT uDriveType = GetDriveType(pThis->pszDevice);
2074	switch (pThis->enmType)
2075	{
2076	case PDMBLOCKTYPE_FLOPPY_360:
2077	case PDMBLOCKTYPE_FLOPPY_720:
2078	case PDMBLOCKTYPE_FLOPPY_1_20:
2079	case PDMBLOCKTYPE_FLOPPY_1_44:
2080	case PDMBLOCKTYPE_FLOPPY_2_88:
2081	if (uDriveType != DRIVE_REMOVABLE)
2082	{
2083	AssertMsgFailed(("Configuration error: '%s' is not a floppy (type=%d)\n",
2084	pThis->pszDevice, uDriveType));
2085	return VERR_INVALID_PARAMETER;
2086	}
2087	break;
2088	case PDMBLOCKTYPE_CDROM:
2089	case PDMBLOCKTYPE_DVD:
2090	if (uDriveType != DRIVE_CDROM)
2091	{
2092	AssertMsgFailed(("Configuration error: '%s' is not a cdrom (type=%d)\n",
2093	pThis->pszDevice, uDriveType));
2094	return VERR_INVALID_PARAMETER;
2095	}
2096	break;
2097	case PDMBLOCKTYPE_HARD_DISK:
2098	default:
2099	AssertMsgFailed(("enmType=%d\n", pThis->enmType));
2100	return VERR_INVALID_PARAMETER;
2101	}
2102	#endif
2103
2104	/*
2105	* Open the device.
2106	*/
2107	#if defined(RT_OS_DARWIN)
2108	rc = drvHostBaseOpen(pThis, NULL, pThis->fReadOnlyConfig);
2109	#else
2110	rc = drvHostBaseReopen(pThis);
2111	#endif
2112	if (RT_FAILURE(rc))
2113	{
2114	char *pszDevice = pThis->pszDevice;
2115	#ifndef RT_OS_DARWIN
2116	char szPathReal[256];
2117	if ( RTPathExists(pszDevice)
2118	&& RT_SUCCESS(RTPathReal(pszDevice, szPathReal, sizeof(szPathReal))))
2119	pszDevice = szPathReal;
2120	pThis->hFileDevice = NIL_RTFILE;
2121	#endif
2122	#ifdef RT_OS_SOLARIS
2123	pThis->hFileRawDevice = NIL_RTFILE;
2124	#endif
2125
2126	/*
2127	* Disable CD/DVD passthrough in case it was enabled. Would cause
2128	* weird failures later when the guest issues commands. These would
2129	* all fail because of the invalid file handle. So use the normal
2130	* virtual CD/DVD code, which deals more gracefully with unavailable
2131	* "media" - actually a complete drive in this case.
2132	*/
2133	pThis->IBlock.pfnSendCmd = NULL;
2134	AssertMsgFailed(("Could not open host device %s, rc=%Rrc\n", pszDevice, rc));
2135	switch (rc)
2136	{
2137	case VERR_ACCESS_DENIED:
2138	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
2139	#ifdef RT_OS_LINUX
2140	N_("Cannot open host device '%s' for %s access. Check the permissions "
2141	"of that device ('/bin/ls -l %s'): Most probably you need to be member "
2142	"of the device group. Make sure that you logout/login after changing "
2143	"the group settings of the current user"),
2144	#else
2145	N_("Cannot open host device '%s' for %s access. Check the permissions "
2146	"of that device"),
2147	#endif
2148	pszDevice, pThis->fReadOnlyConfig ? "readonly" : "read/write",
2149	pszDevice);
2150	default:
2151	{
2152	if (pThis->fAttachFailError)
2153	return rc;
2154	int erc = PDMDrvHlpVMSetRuntimeError(pDrvIns, 0 /fFlags/,
2155	"DrvHost_MOUNTFAIL",
2156	N_("Cannot attach to host device '%s'"), pszDevice);
2157	AssertRC(erc);
2158	src = rc;
2159	}
2160	}
2161	}
2162	#ifdef RT_OS_WINDOWS
2163	if (RT_SUCCESS(src))
2164	DRVHostBaseMediaPresent(pThis);
2165	#endif
2166
2167	/*
2168	* Lock the drive if that's required by the configuration.
2169	*/
2170	if (pThis->fLocked)
2171	{
2172	if (pThis->pfnDoLock)
2173	rc = pThis->pfnDoLock(pThis, true);
2174	if (RT_FAILURE(rc))
2175	{
2176	AssertMsgFailed(("Failed to lock the dvd drive. rc=%Rrc\n", rc));
2177	return rc;
2178	}
2179	}
2180
2181	#ifndef RT_OS_WINDOWS
2182	if (RT_SUCCESS(src))
2183	{
2184	/*
2185	* Create the event semaphore which the poller thread will wait on.
2186	*/
2187	rc = RTSemEventCreate(&pThis->EventPoller);
2188	if (RT_FAILURE(rc))
2189	return rc;
2190	}
2191	#endif
2192
2193	/*
2194	* Initialize the critical section used for serializing the access to the media.
2195	*/
2196	rc = RTCritSectInit(&pThis->CritSect);
2197	if (RT_FAILURE(rc))
2198	return rc;
2199
2200	if (RT_SUCCESS(src))
2201	{
2202	/*
2203	* Start the thread which will poll for the media.
2204	*/
2205	rc = RTThreadCreate(&pThis->ThreadPoller, drvHostBaseMediaThread, pThis, 0,
2206	RTTHREADTYPE_INFREQUENT_POLLER, RTTHREADFLAGS_WAITABLE, "DVDMEDIA");
2207	if (RT_FAILURE(rc))
2208	{
2209	AssertMsgFailed(("Failed to create poller thread. rc=%Rrc\n", rc));
2210	return rc;
2211	}
2212
2213	/*
2214	* Wait for the thread to start up (!w32:) and do one detection loop.
2215	*/
2216	rc = RTThreadUserWait(pThis->ThreadPoller, 10000);
2217	AssertRC(rc);
2218	#ifdef RT_OS_WINDOWS
2219	if (!pThis->hwndDeviceChange)
2220	return VERR_GENERAL_FAILURE;
2221	#endif
2222	}
2223
2224	if (RT_FAILURE(src))
2225	return src;
2226	return rc;
2227	}
2228

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostBase.cpp@ 38694

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