DrvHostBase-darwin.cpp@ 106054

Last change on this file since 106054 was 100108, checked in by vboxsync, 18 months ago
*: Fix build issues when setting VBOX_WITH_WARNINGS_AS_ERRORS=1 on darwin.arm64 and make it a default, bugref:10469
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
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1	/* $Id: DrvHostBase-darwin.cpp 100108 2023-06-07 20:05:13Z vboxsync $ */
2	/** @file
3	* DrvHostBase - Host base drive access driver, OS X specifics.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DRV_HOST_BASE
33	#include <mach/mach.h>
34	#include <Carbon/Carbon.h>
35	#include <IOKit/IOKitLib.h>
36	#include <IOKit/storage/IOStorageDeviceCharacteristics.h>
37	#include <IOKit/scsi/SCSITaskLib.h>
38	#include <IOKit/scsi/SCSICommandOperationCodes.h>
39	#include <IOKit/IOBSD.h>
40	#include <DiskArbitration/DiskArbitration.h>
41	#include <mach/mach_error.h>
42	#include <VBox/err.h>
43	#include <VBox/scsi.h>
44	#include <iprt/string.h>
45
46
47	/**
48	* Host backend specific data.
49	*/
50	typedef struct DRVHOSTBASEOS
51	{
52	/** The master port. */
53	mach_port_t MasterPort;
54	/** The MMC-2 Device Interface. (This is only used to get the scsi task interface.) */
55	MMCDeviceInterface **ppMMCDI;
56	/** The SCSI Task Device Interface. */
57	SCSITaskDeviceInterface **ppScsiTaskDI;
58	/** The block size. Set when querying the media size. */
59	uint32_t cbBlock;
60	/** The disk arbitration session reference. NULL if we didn't have to claim & unmount the device. */
61	DASessionRef pDASession;
62	/** The disk arbitration disk reference. NULL if we didn't have to claim & unmount the device. */
63	DADiskRef pDADisk;
64	/** The number of errors that could go into the release log. (flood gate) */
65	uint32_t cLogRelErrors;
66	} DRVHOSTBASEOS;
67	/** Pointer to the host backend specific data. */
68	typedef DRVHOSTBASEOS *PDRVHOSBASEOS;
69	AssertCompile(sizeof(DRVHOSTBASEOS) <= 64);
70
71	#define DRVHOSTBASE_OS_INT_DECLARED
72	#include "DrvHostBase.h"
73
74
75	/*********************************************************************************************************************************
76	* Defined Constants And Macros *
77	*********************************************************************************************************************************/
78	/** Maximum buffer size we support, check whether darwin has some real upper limit. */
79	#define DARWIN_SCSI_MAX_BUFFER_SIZE (100 * _1K)
80
81	/** The runloop input source name for the disk arbitration events. */
82	#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. */
83
84
85
86	/**
87	* Gets the BSD Name (/dev/disc[0-9]+) for the service.
88	*
89	* This is done by recursing down the I/O registry until we hit upon an entry
90	* with a BSD Name. Usually we find it two levels down. (Further down under
91	* the IOCDPartitionScheme, the volume (slices) BSD Name is found. We don't
92	* seem to have to go this far fortunately.)
93	*
94	* @return VINF_SUCCESS if found, VERR_FILE_NOT_FOUND otherwise.
95	* @param Entry The current I/O registry entry reference.
96	* @param pszName Where to store the name. 128 bytes.
97	* @param cRecursions Number of recursions. This is used as an precaution
98	* just to limit the depth and avoid blowing the stack
99	* should we hit a bug or something.
100	*/
101	static int drvHostBaseGetBSDName(io_registry_entry_t Entry, char *pszName, unsigned cRecursions)
102	{
103	int rc = VERR_FILE_NOT_FOUND;
104	io_iterator_t Children = 0;
105	kern_return_t krc = IORegistryEntryGetChildIterator(Entry, kIOServicePlane, &Children);
106	if (krc == KERN_SUCCESS)
107	{
108	io_object_t Child;
109	while ( rc == VERR_FILE_NOT_FOUND
110	&& (Child = IOIteratorNext(Children)) != 0)
111	{
112	CFStringRef BSDNameStrRef = (CFStringRef)IORegistryEntryCreateCFProperty(Child, CFSTR(kIOBSDNameKey), kCFAllocatorDefault, 0);
113	if (BSDNameStrRef)
114	{
115	if (CFStringGetCString(BSDNameStrRef, pszName, 128, kCFStringEncodingUTF8))
116	rc = VINF_SUCCESS;
117	else
118	AssertFailed();
119	CFRelease(BSDNameStrRef);
120	}
121	if (rc == VERR_FILE_NOT_FOUND && cRecursions < 10)
122	rc = drvHostBaseGetBSDName(Child, pszName, cRecursions + 1);
123	IOObjectRelease(Child);
124	}
125	IOObjectRelease(Children);
126	}
127	return rc;
128	}
129
130
131	/**
132	* Callback notifying us that the async DADiskClaim()/DADiskUnmount call has completed.
133	*
134	* @param DiskRef The disk that was attempted claimed / unmounted.
135	* @param DissenterRef NULL on success, contains details on failure.
136	* @param pvContext Pointer to the return code variable.
137	*/
138	static void drvHostBaseDADoneCallback(DADiskRef DiskRef, DADissenterRef DissenterRef, void *pvContext)
139	{
140	RT_NOREF(DiskRef);
141	int prc = (int )pvContext;
142	if (!DissenterRef)
143	*prc = 0;
144	else
145	*prc = DADissenterGetStatus(DissenterRef) ? DADissenterGetStatus(DissenterRef) : -1;
146	CFRunLoopStop(CFRunLoopGetCurrent());
147	}
148
149
150	/**
151	* Obtain exclusive access to the DVD device, umount it if necessary.
152	*
153	* @return VBox status code.
154	* @param pThis The driver instance.
155	* @param DVDService The DVD service object.
156	*/
157	static int drvHostBaseObtainExclusiveAccess(PDRVHOSTBASE pThis, io_object_t DVDService)
158	{
159	PPDMDRVINS pDrvIns = pThis->pDrvIns; NOREF(pDrvIns);
160
161	for (unsigned iTry = 0;; iTry++)
162	{
163	IOReturn irc = (*pThis->Os.ppScsiTaskDI)->ObtainExclusiveAccess(pThis->Os.ppScsiTaskDI);
164	if (irc == kIOReturnSuccess)
165	{
166	/*
167	* This is a bit weird, but if we unmounted the DVD drive we also need to
168	* unlock it afterwards or the guest won't be able to eject it later on.
169	*/
170	if (pThis->Os.pDADisk)
171	{
172	uint8_t abCmd[16] =
173	{
174	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, false, 0,
175	0,0,0,0,0,0,0,0,0,0
176	};
177	drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, NULL, 0, 0);
178	}
179	return VINF_SUCCESS;
180	}
181	if (irc == kIOReturnExclusiveAccess)
182	return VERR_SHARING_VIOLATION; /* already used exclusivly. */
183	if (irc != kIOReturnBusy)
184	return VERR_GENERAL_FAILURE; /* not mounted */
185
186	/*
187	* Attempt to the unmount all volumes of the device.
188	* It seems we can can do this all in one go without having to enumerate the
189	* volumes (sessions) and deal with them one by one. This is very fortuitous
190	* as the disk arbitration API is a bit cumbersome to deal with.
191	*/
192	if (iTry > 2)
193	return VERR_DRIVE_LOCKED;
194	char szName[128];
195	int rc = drvHostBaseGetBSDName(DVDService, &szName[0], 0);
196	if (RT_SUCCESS(rc))
197	{
198	pThis->Os.pDASession = DASessionCreate(kCFAllocatorDefault);
199	if (pThis->Os.pDASession)
200	{
201	DASessionScheduleWithRunLoop(pThis->Os.pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
202	pThis->Os.pDADisk = DADiskCreateFromBSDName(kCFAllocatorDefault, pThis->Os.pDASession, szName);
203	if (pThis->Os.pDADisk)
204	{
205	/*
206	* Try claim the device.
207	*/
208	Log(("%s-%d: calling DADiskClaim on '%s'.\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
209	int rcDA = -2;
210	DADiskClaim(pThis->Os.pDADisk, kDADiskClaimOptionDefault, NULL, NULL, drvHostBaseDADoneCallback, &rcDA);
211	SInt32 rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
212	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
213	if ( rc32 == kCFRunLoopRunStopped
214	&& !rcDA)
215	{
216	/*
217	* Try unmount the device.
218	*/
219	Log(("%s-%d: calling DADiskUnmount on '%s'.\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
220	rcDA = -2;
221	DADiskUnmount(pThis->Os.pDADisk, kDADiskUnmountOptionWhole, drvHostBaseDADoneCallback, &rcDA);
222	rc32 = CFRunLoopRunInMode(MY_RUN_LOOP_MODE, 120.0, FALSE);
223	AssertMsg(rc32 == kCFRunLoopRunStopped, ("rc32=%RI32 (%RX32)\n", rc32, rc32));
224	if ( rc32 == kCFRunLoopRunStopped
225	&& !rcDA)
226	{
227	iTry = 99;
228	DASessionUnscheduleFromRunLoop(pThis->Os.pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
229	Log(("%s-%d: unmount succeed - retrying.\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
230	continue;
231	}
232	Log(("%s-%d: umount => rc32=%d & rcDA=%#x\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc32, rcDA));
233
234	/* failed - cleanup */
235	DADiskUnclaim(pThis->Os.pDADisk);
236	}
237	else
238	Log(("%s-%d: claim => rc32=%d & rcDA=%#x\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc32, rcDA));
239
240	CFRelease(pThis->Os.pDADisk);
241	pThis->Os.pDADisk = NULL;
242	}
243	else
244	Log(("%s-%d: failed to open disk '%s'!\n", pDrvIns->pReg->szName, pDrvIns->iInstance, szName));
245
246	DASessionUnscheduleFromRunLoop(pThis->Os.pDASession, CFRunLoopGetCurrent(), MY_RUN_LOOP_MODE);
247	CFRelease(pThis->Os.pDASession);
248	pThis->Os.pDASession = NULL;
249	}
250	else
251	Log(("%s-%d: failed to create DA session!\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
252	}
253	RTThreadSleep(10);
254	}
255	}
256
257	DECLHIDDEN(int) drvHostBaseScsiCmdOs(PDRVHOSTBASE pThis, const uint8_t *pbCmd, size_t cbCmd, PDMMEDIATXDIR enmTxDir,
258	void pvBuf, uint32_t pcbBuf, uint8_t *pbSense, size_t cbSense, uint32_t cTimeoutMillies)
259	{
260	/*
261	* Minimal input validation.
262	*/
263	Assert(enmTxDir == PDMMEDIATXDIR_NONE \|\| enmTxDir == PDMMEDIATXDIR_FROM_DEVICE \|\| enmTxDir == PDMMEDIATXDIR_TO_DEVICE);
264	Assert(!pvBuf \|\| pcbBuf);
265	Assert(pvBuf \|\| enmTxDir == PDMMEDIATXDIR_NONE);
266	Assert(pbSense \|\| !cbSense);
267	AssertPtr(pbCmd);
268	Assert(cbCmd <= 16 && cbCmd >= 1);
269	const uint32_t cbBuf = pcbBuf ? *pcbBuf : 0;
270	if (pcbBuf)
271	*pcbBuf = 0;
272
273	Assert(pThis->Os.ppScsiTaskDI);
274
275	int rc = VERR_GENERAL_FAILURE;
276	SCSITaskInterface *ppScsiTaskI = (pThis->Os.ppScsiTaskDI)->CreateSCSITask(pThis->Os.ppScsiTaskDI);
277	if (!ppScsiTaskI)
278	return VERR_NO_MEMORY;
279	do
280	{
281	/* Setup the scsi command. */
282	SCSICommandDescriptorBlock cdb = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
283	memcpy(&cdb[0], pbCmd, cbCmd);
284	IOReturn irc = (*ppScsiTaskI)->SetCommandDescriptorBlock(ppScsiTaskI, cdb, cbCmd);
285	AssertBreak(irc == kIOReturnSuccess);
286
287	/* Setup the buffer. */
288	if (enmTxDir == PDMMEDIATXDIR_NONE)
289	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, NULL, 0, 0, kSCSIDataTransfer_NoDataTransfer);
290	else
291	{
292	IOVirtualRange Range = { (IOVirtualAddress)pvBuf, cbBuf };
293	irc = (*ppScsiTaskI)->SetScatterGatherEntries(ppScsiTaskI, &Range, 1, cbBuf,
294	enmTxDir == PDMMEDIATXDIR_FROM_DEVICE
295	? kSCSIDataTransfer_FromTargetToInitiator
296	: kSCSIDataTransfer_FromInitiatorToTarget);
297	}
298	AssertBreak(irc == kIOReturnSuccess);
299
300	/* Set the timeout. */
301	irc = (ppScsiTaskI)->SetTimeoutDuration(ppScsiTaskI, cTimeoutMillies ? cTimeoutMillies : 30000 /ms*/);
302	AssertBreak(irc == kIOReturnSuccess);
303
304	/* Execute the command and get the response. */
305	SCSI_Sense_Data SenseData = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
306	SCSIServiceResponse ServiceResponse = kSCSIServiceResponse_Request_In_Process;
307	SCSITaskStatus TaskStatus = kSCSITaskStatus_GOOD;
308	UInt64 cbReturned = 0;
309	irc = (*ppScsiTaskI)->ExecuteTaskSync(ppScsiTaskI, &SenseData, &TaskStatus, &cbReturned);
310	AssertBreak(irc == kIOReturnSuccess);
311	if (pcbBuf)
312	*pcbBuf = (int32_t)cbReturned;
313
314	irc = (*ppScsiTaskI)->GetSCSIServiceResponse(ppScsiTaskI, &ServiceResponse);
315	AssertBreak(irc == kIOReturnSuccess);
316	AssertBreak(ServiceResponse == kSCSIServiceResponse_TASK_COMPLETE);
317
318	if (TaskStatus == kSCSITaskStatus_GOOD)
319	rc = VINF_SUCCESS;
320	else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
321	&& pbSense)
322	{
323	memset(pbSense, 0, cbSense); /* lazy */
324	memcpy(pbSense, &SenseData, RT_MIN(sizeof(SenseData), cbSense));
325	rc = VERR_UNRESOLVED_ERROR;
326	}
327	/** @todo convert sense codes when caller doesn't wish to do this himself. */
328	/*else if ( TaskStatus == kSCSITaskStatus_CHECK_CONDITION
329	&& SenseData.ADDITIONAL_SENSE_CODE == 0x3A)
330	rc = VERR_MEDIA_NOT_PRESENT; */
331	else
332	{
333	rc = enmTxDir == PDMMEDIATXDIR_NONE
334	? VERR_DEV_IO_ERROR
335	: enmTxDir == PDMMEDIATXDIR_FROM_DEVICE
336	? VERR_READ_ERROR
337	: VERR_WRITE_ERROR;
338	if (pThis->Os.cLogRelErrors++ < 10)
339	LogRel(("DVD scsi error: cmd={%.*Rhxs} TaskStatus=%#x key=%#x ASC=%#x ASCQ=%#x (%Rrc)\n",
340	cbCmd, pbCmd, TaskStatus, SenseData.SENSE_KEY, SenseData.ADDITIONAL_SENSE_CODE,
341	SenseData.ADDITIONAL_SENSE_CODE_QUALIFIER, rc));
342	}
343	} while (0);
344
345	(*ppScsiTaskI)->Release(ppScsiTaskI);
346
347	return rc;
348	}
349
350
351	DECLHIDDEN(size_t) drvHostBaseScsiCmdGetBufLimitOs(PDRVHOSTBASE pThis)
352	{
353	RT_NOREF(pThis);
354
355	return DARWIN_SCSI_MAX_BUFFER_SIZE;
356	}
357
358
359	DECLHIDDEN(int) drvHostBaseGetMediaSizeOs(PDRVHOSTBASE pThis, uint64_t *pcb)
360	{
361	/*
362	* Try a READ_CAPACITY command...
363	*/
364	struct
365	{
366	uint32_t cBlocks;
367	uint32_t cbBlock;
368	} Buf = {0, 0};
369	uint32_t cbBuf = sizeof(Buf);
370	uint8_t abCmd[16] =
371	{
372	SCSI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
373	0,0,0,0,0,0,0,0,0
374	};
375	int rc = drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_FROM_DEVICE, &Buf, &cbBuf, NULL, 0, 0);
376	if (RT_SUCCESS(rc))
377	{
378	Assert(cbBuf == sizeof(Buf));
379	Buf.cBlocks = RT_BE2H_U32(Buf.cBlocks);
380	Buf.cbBlock = RT_BE2H_U32(Buf.cbBlock);
381	//if (Buf.cbBlock > 2048) /* everyone else is doing this... check if it needed/right.*/
382	// Buf.cbBlock = 2048;
383	pThis->Os.cbBlock = Buf.cbBlock;
384
385	pcb = (uint64_t)Buf.cBlocks Buf.cbBlock;
386	}
387	return rc;
388	}
389
390
391	DECLHIDDEN(int) drvHostBaseReadOs(PDRVHOSTBASE pThis, uint64_t off, void *pvBuf, size_t cbRead)
392	{
393	int rc = VINF_SUCCESS;
394
395	if ( pThis->Os.ppScsiTaskDI
396	&& pThis->Os.cbBlock)
397	{
398	/*
399	* Issue a READ(12) request.
400	*/
401	do
402	{
403	const uint32_t LBA = off / pThis->Os.cbBlock;
404	AssertReturn(!(off % pThis->Os.cbBlock), VERR_INVALID_PARAMETER);
405	uint32_t cbRead32 = cbRead > SCSI_MAX_BUFFER_SIZE
406	? SCSI_MAX_BUFFER_SIZE
407	: (uint32_t)cbRead;
408	const uint32_t cBlocks = cbRead32 / pThis->Os.cbBlock;
409	AssertReturn(!(cbRead % pThis->Os.cbBlock), VERR_INVALID_PARAMETER);
410	uint8_t abCmd[16] =
411	{
412	SCSI_READ_12, 0,
413	RT_BYTE4(LBA), RT_BYTE3(LBA), RT_BYTE2(LBA), RT_BYTE1(LBA),
414	RT_BYTE4(cBlocks), RT_BYTE3(cBlocks), RT_BYTE2(cBlocks), RT_BYTE1(cBlocks),
415	0, 0, 0, 0, 0
416	};
417	rc = drvHostBaseScsiCmdOs(pThis, abCmd, 12, PDMMEDIATXDIR_FROM_DEVICE, pvBuf, &cbRead32, NULL, 0, 0);
418
419	off += cbRead32;
420	cbRead -= cbRead32;
421	pvBuf = (uint8_t *)pvBuf + cbRead32;
422	} while ((cbRead > 0) && RT_SUCCESS(rc));
423	}
424	else
425	rc = VERR_MEDIA_NOT_PRESENT;
426
427	return rc;
428	}
429
430
431	DECLHIDDEN(int) drvHostBaseWriteOs(PDRVHOSTBASE pThis, uint64_t off, const void *pvBuf, size_t cbWrite)
432	{
433	RT_NOREF4(pThis, off, pvBuf, cbWrite);
434	return VERR_WRITE_PROTECT;
435	}
436
437
438	DECLHIDDEN(int) drvHostBaseFlushOs(PDRVHOSTBASE pThis)
439	{
440	RT_NOREF1(pThis);
441	return VINF_SUCCESS;
442	}
443
444
445	DECLHIDDEN(int) drvHostBaseDoLockOs(PDRVHOSTBASE pThis, bool fLock)
446	{
447	uint8_t abCmd[16] =
448	{
449	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, fLock, 0,
450	0,0,0,0,0,0,0,0,0,0
451	};
452	return drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, NULL, 0, 0);
453	}
454
455
456	DECLHIDDEN(int) drvHostBaseEjectOs(PDRVHOSTBASE pThis)
457	{
458	uint8_t abCmd[16] =
459	{
460	SCSI_START_STOP_UNIT, 0, 0, 0, 2 /eject+stop/, 0,
461	0,0,0,0,0,0,0,0,0,0
462	};
463	return drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, NULL, 0, 0);
464	}
465
466
467	DECLHIDDEN(int) drvHostBaseQueryMediaStatusOs(PDRVHOSTBASE pThis, bool pfMediaChanged, bool pfMediaPresent)
468	{
469	AssertReturn(pThis->Os.ppScsiTaskDI, VERR_INTERNAL_ERROR);
470
471	/*
472	* Issue a TEST UNIT READY request.
473	*/
474	*pfMediaChanged = false;
475	*pfMediaPresent = false;
476	uint8_t abCmd[16] = { SCSI_TEST_UNIT_READY, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
477	uint8_t abSense[32];
478	int rc = drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, abSense, sizeof(abSense), 0);
479	if (RT_SUCCESS(rc))
480	*pfMediaPresent = true;
481	else if ( rc == VERR_UNRESOLVED_ERROR
482	&& abSense[2] == 6 /* unit attention */
483	&& ( (abSense[12] == 0x29 && abSense[13] < 5 /* reset */)
484	\|\| (abSense[12] == 0x2a && abSense[13] == 0 /* parameters changed */) //???
485	\|\| (abSense[12] == 0x3f && abSense[13] == 0 /* target operating conditions have changed */) //???
486	\|\| (abSense[12] == 0x3f && abSense[13] == 2 /* changed operating definition */) //???
487	\|\| (abSense[12] == 0x3f && abSense[13] == 3 /* inquiry parameters changed */)
488	\|\| (abSense[12] == 0x3f && abSense[13] == 5 /* device identifier changed */)
489	)
490	)
491	{
492	*pfMediaPresent = false;
493	*pfMediaChanged = true;
494	rc = VINF_SUCCESS;
495	/** @todo check this media change stuff on Darwin. */
496	}
497
498	return rc;
499	}
500
501
502	DECLHIDDEN(void) drvHostBaseInitOs(PDRVHOSTBASE pThis)
503	{
504	pThis->Os.MasterPort = IO_OBJECT_NULL;
505	pThis->Os.ppMMCDI = NULL;
506	pThis->Os.ppScsiTaskDI = NULL;
507	pThis->Os.cbBlock = 0;
508	pThis->Os.pDADisk = NULL;
509	pThis->Os.pDASession = NULL;
510	}
511
512
513	DECLHIDDEN(int) drvHostBaseOpenOs(PDRVHOSTBASE pThis, bool fReadOnly)
514	{
515	RT_NOREF(fReadOnly);
516
517	/* Darwin is kind of special... */
518	Assert(!pThis->Os.cbBlock);
519	Assert(pThis->Os.MasterPort == IO_OBJECT_NULL);
520	Assert(!pThis->Os.ppMMCDI);
521	Assert(!pThis->Os.ppScsiTaskDI);
522
523	/*
524	* Open the master port on the first invocation.
525	*/
526	RT_GCC_NO_WARN_DEPRECATED_BEGIN
527	kern_return_t krc = IOMasterPort(MACH_PORT_NULL, &pThis->Os.MasterPort); /* Deprecated since 12.0. */
528	RT_GCC_NO_WARN_DEPRECATED_END
529	AssertReturn(krc == KERN_SUCCESS, VERR_GENERAL_FAILURE);
530
531	/*
532	* Create a matching dictionary for searching for CD, DVD and BlueRay services in the IOKit.
533	*
534	* The idea is to find all the devices which are of class IOCDBlockStorageDevice.
535	* CD devices are represented by IOCDBlockStorageDevice class itself, while DVD and BlueRay ones
536	* have it as a parent class.
537	*/
538	CFMutableDictionaryRef RefMatchingDict = IOServiceMatching("IOCDBlockStorageDevice");
539	AssertReturn(RefMatchingDict, VERR_NOT_FOUND);
540
541	/*
542	* do the search and get a collection of keyboards.
543	*/
544	io_iterator_t DVDServices = IO_OBJECT_NULL;
545	IOReturn irc = IOServiceGetMatchingServices(pThis->Os.MasterPort, RefMatchingDict, &DVDServices);
546	AssertMsgReturn(irc == kIOReturnSuccess, ("irc=%d\n", irc), VERR_NOT_FOUND);
547	RefMatchingDict = NULL; /* the reference is consumed by IOServiceGetMatchingServices. */
548
549	/*
550	* Enumerate the matching drives (services).
551	* (This enumeration must be identical to the one performed in Main/src-server/darwin/iokit.cpp.)
552	*/
553	int rc = VERR_FILE_NOT_FOUND;
554	unsigned i = 0;
555	io_object_t DVDService;
556	while ((DVDService = IOIteratorNext(DVDServices)) != 0)
557	{
558	/*
559	* Get the properties we use to identify the DVD drive.
560	*
561	* While there is a (weird 12 byte) GUID, it isn't persistent
562	* across boots. So, we have to use a combination of the
563	* vendor name and product name properties with an optional
564	* sequence number for identification.
565	*/
566	CFMutableDictionaryRef PropsRef = 0;
567	krc = IORegistryEntryCreateCFProperties(DVDService, &PropsRef, kCFAllocatorDefault, kNilOptions);
568	if (krc == KERN_SUCCESS)
569	{
570	/* Get the Device Characteristics dictionary. */
571	CFDictionaryRef DevCharRef = (CFDictionaryRef)CFDictionaryGetValue(PropsRef, CFSTR(kIOPropertyDeviceCharacteristicsKey));
572	if (DevCharRef)
573	{
574	/* The vendor name. */
575	char szVendor[128];
576	char *pszVendor = &szVendor[0];
577	CFTypeRef ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyVendorNameKey));
578	if ( ValueRef
579	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
580	&& CFStringGetCString((CFStringRef)ValueRef, szVendor, sizeof(szVendor), kCFStringEncodingUTF8))
581	pszVendor = RTStrStrip(szVendor);
582	else
583	*pszVendor = '\0';
584
585	/* The product name. */
586	char szProduct[128];
587	char *pszProduct = &szProduct[0];
588	ValueRef = CFDictionaryGetValue(DevCharRef, CFSTR(kIOPropertyProductNameKey));
589	if ( ValueRef
590	&& CFGetTypeID(ValueRef) == CFStringGetTypeID()
591	&& CFStringGetCString((CFStringRef)ValueRef, szProduct, sizeof(szProduct), kCFStringEncodingUTF8))
592	pszProduct = RTStrStrip(szProduct);
593	else
594	*pszProduct = '\0';
595
596	/* Construct the two names and compare thwm with the one we're searching for. */
597	char szName1[256 + 32];
598	char szName2[256 + 32];
599	if (pszVendor \|\| pszProduct)
600	{
601	if (pszVendor && pszProduct)
602	{
603	RTStrPrintf(szName1, sizeof(szName1), "%s %s", pszVendor, pszProduct);
604	RTStrPrintf(szName2, sizeof(szName2), "%s %s (#%u)", pszVendor, pszProduct, i);
605	}
606	else
607	{
608	strcpy(szName1, *pszVendor ? pszVendor : pszProduct);
609	RTStrPrintf(szName2, sizeof(szName2), "%s (#%u)", *pszVendor ? pszVendor : pszProduct, i);
610	}
611	}
612	else
613	{
614	RTStrPrintf(szName1, sizeof(szName1), "(#%u)", i);
615	strcpy(szName2, szName1);
616	}
617
618	if ( !strcmp(szName1, pThis->pszDevice)
619	\|\| !strcmp(szName2, pThis->pszDevice))
620	{
621	/*
622	* Found it! Now, get the client interface and stuff.
623	* Note that we could also query kIOSCSITaskDeviceUserClientTypeID here if the
624	* MMC client plugin is missing. For now we assume this won't be necessary.
625	*/
626	SInt32 Score = 0;
627	IOCFPlugInInterface **ppPlugInInterface = NULL;
628	krc = IOCreatePlugInInterfaceForService(DVDService, kIOMMCDeviceUserClientTypeID, kIOCFPlugInInterfaceID,
629	&ppPlugInInterface, &Score);
630	if (krc == KERN_SUCCESS)
631	{
632	HRESULT hrc = (*ppPlugInInterface)->QueryInterface(ppPlugInInterface,
633	CFUUIDGetUUIDBytes(kIOMMCDeviceInterfaceID),
634	(LPVOID *)&pThis->Os.ppMMCDI);
635	(*ppPlugInInterface)->Release(ppPlugInInterface);
636	ppPlugInInterface = NULL;
637	if (hrc == S_OK)
638	{
639	pThis->Os.ppScsiTaskDI = (*pThis->Os.ppMMCDI)->GetSCSITaskDeviceInterface(pThis->Os.ppMMCDI);
640	if (pThis->Os.ppScsiTaskDI)
641	rc = VINF_SUCCESS;
642	else
643	{
644	LogRel(("GetSCSITaskDeviceInterface failed on '%s'\n", pThis->pszDevice));
645	rc = VERR_NOT_SUPPORTED;
646	(*pThis->Os.ppMMCDI)->Release(pThis->Os.ppMMCDI);
647	}
648	}
649	else
650	{
651	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinCOM(krc);
652	pThis->Os.ppMMCDI = NULL;
653	}
654	}
655	else /* Check for kIOSCSITaskDeviceUserClientTypeID? */
656	rc = VERR_GENERAL_FAILURE;//RTErrConvertFromDarwinKern(krc);
657
658	/* Obtain exclusive access to the device so we can send SCSI commands. */
659	if (RT_SUCCESS(rc))
660	rc = drvHostBaseObtainExclusiveAccess(pThis, DVDService);
661
662	/* Cleanup on failure. */
663	if (RT_FAILURE(rc))
664	{
665	if (pThis->Os.ppScsiTaskDI)
666	{
667	(*pThis->Os.ppScsiTaskDI)->Release(pThis->Os.ppScsiTaskDI);
668	pThis->Os.ppScsiTaskDI = NULL;
669	}
670	if (pThis->Os.ppMMCDI)
671	{
672	(*pThis->Os.ppMMCDI)->Release(pThis->Os.ppMMCDI);
673	pThis->Os.ppMMCDI = NULL;
674	}
675	}
676
677	IOObjectRelease(DVDService);
678	break;
679	}
680	}
681	CFRelease(PropsRef);
682	}
683	else
684	AssertMsgFailed(("krc=%#x\n", krc));
685
686	IOObjectRelease(DVDService);
687	i++;
688	}
689
690	IOObjectRelease(DVDServices);
691	return rc;
692
693	}
694
695
696	DECLHIDDEN(int) drvHostBaseMediaRefreshOs(PDRVHOSTBASE pThis)
697	{
698	RT_NOREF(pThis);
699	return VINF_SUCCESS;
700	}
701
702
703	DECLHIDDEN(bool) drvHostBaseIsMediaPollingRequiredOs(PDRVHOSTBASE pThis)
704	{
705	if (pThis->enmType == PDMMEDIATYPE_CDROM \|\| pThis->enmType == PDMMEDIATYPE_DVD)
706	return true;
707
708	AssertMsgFailed(("Darwin supports only CD/DVD host drive access\n"));
709	return false;
710	}
711
712
713	DECLHIDDEN(void) drvHostBaseDestructOs(PDRVHOSTBASE pThis)
714	{
715	/*
716	* Unlock the drive if we've locked it or we're in passthru mode.
717	*/
718	if ( ( pThis->fLocked
719	\|\| pThis->IMedia.pfnSendCmd)
720	&& pThis->Os.ppScsiTaskDI
721	&& pThis->pfnDoLock)
722	{
723	int rc = pThis->pfnDoLock(pThis, false);
724	if (RT_SUCCESS(rc))
725	pThis->fLocked = false;
726	}
727
728	/*
729	* The unclaiming doesn't seem to mean much, the DVD is actually
730	* remounted when we release exclusive access. I'm not quite sure
731	* if I should put the unclaim first or not...
732	*
733	* Anyway, that it's automatically remounted very good news for us,
734	* because that means we don't have to mess with that ourselves. Of
735	* course there is the unlikely scenario that we've succeeded in claiming
736	* and umount the DVD but somehow failed to gain exclusive scsi access...
737	*/
738	if (pThis->Os.ppScsiTaskDI)
739	{
740	LogFlow(("%s-%d: releasing exclusive scsi access!\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
741	(*pThis->Os.ppScsiTaskDI)->ReleaseExclusiveAccess(pThis->Os.ppScsiTaskDI);
742	(*pThis->Os.ppScsiTaskDI)->Release(pThis->Os.ppScsiTaskDI);
743	pThis->Os.ppScsiTaskDI = NULL;
744	}
745	if (pThis->Os.pDADisk)
746	{
747	LogFlow(("%s-%d: unclaiming the disk!\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
748	DADiskUnclaim(pThis->Os.pDADisk);
749	CFRelease(pThis->Os.pDADisk);
750	pThis->Os.pDADisk = NULL;
751	}
752	if (pThis->Os.ppMMCDI)
753	{
754	LogFlow(("%s-%d: releasing the MMC object!\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
755	(*pThis->Os.ppMMCDI)->Release(pThis->Os.ppMMCDI);
756	pThis->Os.ppMMCDI = NULL;
757	}
758	if (pThis->Os.MasterPort != IO_OBJECT_NULL)
759	{
760	mach_port_deallocate(mach_task_self(), pThis->Os.MasterPort);
761	pThis->Os.MasterPort = IO_OBJECT_NULL;
762	}
763	if (pThis->Os.pDASession)
764	{
765	LogFlow(("%s-%d: releasing the DA session!\n", pThis->pDrvIns->pReg->szName, pThis->pDrvIns->iInstance));
766	CFRelease(pThis->Os.pDASession);
767	pThis->Os.pDASession = NULL;
768	}
769	}
770

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostBase-darwin.cpp@ 106054

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