StorageControllerImpl.cpp@ 51498

Last change on this file since 51498 was 51498, checked in by vboxsync, 11 years ago
6813 - MachineImpl use of server side wrappers + misc mods on other classes
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1	/* $Id: StorageControllerImpl.cpp 51498 2014-06-02 18:53:08Z vboxsync $ */
2
3	/** @file
4	*
5	* Implementation of IStorageController.
6	*/
7
8	/*
9	* Copyright (C) 2008-2014 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20	#include "StorageControllerImpl.h"
21	#include "MachineImpl.h"
22	#include "VirtualBoxImpl.h"
23	#include "SystemPropertiesImpl.h"
24
25	#include <iprt/string.h>
26	#include <iprt/cpp/utils.h>
27
28	#include <VBox/err.h>
29	#include <VBox/settings.h>
30
31	#include <algorithm>
32
33	#include "AutoStateDep.h"
34	#include "AutoCaller.h"
35	#include "Logging.h"
36
37	// defines
38	/////////////////////////////////////////////////////////////////////////////
39	//
40	//
41	DEFINE_EMPTY_CTOR_DTOR(StorageController)
42
43	struct BackupableStorageControllerData
44	{
45	/* Constructor. */
46	BackupableStorageControllerData()
47	: mStorageBus(StorageBus_IDE),
48	mStorageControllerType(StorageControllerType_PIIX4),
49	mInstance(0),
50	mPortCount(2),
51	fUseHostIOCache(true),
52	fBootable(false),
53	mPortIde0Master(0),
54	mPortIde0Slave(1),
55	mPortIde1Master(2),
56	mPortIde1Slave(3)
57	{ }
58
59	/** Unique name of the storage controller. */
60	Utf8Str strName;
61	/** The connection type of the storage controller. */
62	StorageBus_T mStorageBus;
63	/** Type of the Storage controller. */
64	StorageControllerType_T mStorageControllerType;
65	/** Instance number of the storage controller. */
66	ULONG mInstance;
67	/** Number of usable ports. */
68	ULONG mPortCount;
69	/** Whether to use the host IO caches. */
70	BOOL fUseHostIOCache;
71	/** Whether it is possible to boot from disks attached to this controller. */
72	BOOL fBootable;
73
74	/** The following is only for the SATA controller atm. */
75	/** Port which acts as primary master for ide emulation. */
76	ULONG mPortIde0Master;
77	/** Port which acts as primary slave for ide emulation. */
78	ULONG mPortIde0Slave;
79	/** Port which acts as secondary master for ide emulation. */
80	ULONG mPortIde1Master;
81	/** Port which acts as secondary slave for ide emulation. */
82	ULONG mPortIde1Slave;
83	};
84
85	struct StorageController::Data
86	{
87	Data(Machine * const aMachine)
88	: pVirtualBox(NULL),
89	pSystemProperties(NULL),
90	pParent(aMachine)
91	{
92	unconst(pVirtualBox) = aMachine->i_getVirtualBox();
93	unconst(pSystemProperties) = pVirtualBox->i_getSystemProperties();
94	}
95
96	VirtualBox * const pVirtualBox;
97	SystemProperties * const pSystemProperties;
98	Machine * const pParent;
99	const ComObjPtr<StorageController> pPeer;
100
101	Backupable<BackupableStorageControllerData> bd;
102	};
103
104
105	// constructor / destructor
106	/////////////////////////////////////////////////////////////////////////////
107
108	HRESULT StorageController::FinalConstruct()
109	{
110	return BaseFinalConstruct();
111	}
112
113	void StorageController::FinalRelease()
114	{
115	uninit();
116	BaseFinalRelease();
117	}
118
119	// public initializer/uninitializer for internal purposes only
120	/////////////////////////////////////////////////////////////////////////////
121
122	/**
123	* Initializes the storage controller object.
124	*
125	* @returns COM result indicator.
126	* @param aParent Pointer to our parent object.
127	* @param aName Name of the storage controller.
128	* @param aInstance Instance number of the storage controller.
129	*/
130	HRESULT StorageController::init(Machine *aParent,
131	const Utf8Str &aName,
132	StorageBus_T aStorageBus,
133	ULONG aInstance, bool fBootable)
134	{
135	LogFlowThisFunc(("aParent=%p aName=\"%s\" aInstance=%u\n",
136	aParent, aName.c_str(), aInstance));
137
138	ComAssertRet(aParent && !aName.isEmpty(), E_INVALIDARG);
139	if ( (aStorageBus <= StorageBus_Null)
140	\|\| (aStorageBus > StorageBus_USB))
141	return setError(E_INVALIDARG,
142	tr("Invalid storage connection type"));
143
144	ULONG maxInstances;
145	ChipsetType_T chipsetType;
146	HRESULT rc = aParent->COMGETTER(ChipsetType)(&chipsetType);
147	if (FAILED(rc))
148	return rc;
149	rc = aParent->i_getVirtualBox()->i_getSystemProperties()->
150	GetMaxInstancesOfStorageBus(chipsetType, aStorageBus, &maxInstances);
151	if (FAILED(rc))
152	return rc;
153	if (aInstance >= maxInstances)
154	return setError(E_INVALIDARG,
155	tr("Too many storage controllers of this type"));
156
157	/* Enclose the state transition NotReady->InInit->Ready */
158	AutoInitSpan autoInitSpan(this);
159	AssertReturn(autoInitSpan.isOk(), E_FAIL);
160
161	m = new Data(aParent);
162
163	/* m->pPeer is left null */
164
165	m->bd.allocate();
166
167	m->bd->strName = aName;
168	m->bd->mInstance = aInstance;
169	m->bd->fBootable = fBootable;
170	m->bd->mStorageBus = aStorageBus;
171	if ( aStorageBus != StorageBus_IDE
172	&& aStorageBus != StorageBus_Floppy)
173	m->bd->fUseHostIOCache = false;
174	else
175	m->bd->fUseHostIOCache = true;
176
177	switch (aStorageBus)
178	{
179	case StorageBus_IDE:
180	m->bd->mPortCount = 2;
181	m->bd->mStorageControllerType = StorageControllerType_PIIX4;
182	break;
183	case StorageBus_SATA:
184	m->bd->mPortCount = 30;
185	m->bd->mStorageControllerType = StorageControllerType_IntelAhci;
186	break;
187	case StorageBus_SCSI:
188	m->bd->mPortCount = 16;
189	m->bd->mStorageControllerType = StorageControllerType_LsiLogic;
190	break;
191	case StorageBus_Floppy:
192	m->bd->mPortCount = 1;
193	m->bd->mStorageControllerType = StorageControllerType_I82078;
194	break;
195	case StorageBus_SAS:
196	m->bd->mPortCount = 8;
197	m->bd->mStorageControllerType = StorageControllerType_LsiLogicSas;
198	case StorageBus_USB:
199	m->bd->mPortCount = 8;
200	m->bd->mStorageControllerType = StorageControllerType_USB;
201	break;
202	}
203
204	/* Confirm a successful initialization */
205	autoInitSpan.setSucceeded();
206
207	return S_OK;
208	}
209
210	/**
211	* Initializes the object given another object
212	* (a kind of copy constructor). This object shares data with
213	* the object passed as an argument.
214	*
215	* @param aReshare
216	* When false, the original object will remain a data owner.
217	* Otherwise, data ownership will be transferred from the original
218	* object to this one.
219	*
220	* @note This object must be destroyed before the original object
221	* it shares data with is destroyed.
222	*
223	* @note Locks @a aThat object for writing if @a aReshare is @c true, or for
224	* reading if @a aReshare is false.
225	*/
226	HRESULT StorageController::init(Machine *aParent,
227	StorageController *aThat,
228	bool aReshare /* = false */)
229	{
230	LogFlowThisFunc(("aParent=%p, aThat=%p, aReshare=%RTbool\n",
231	aParent, aThat, aReshare));
232
233	ComAssertRet(aParent && aThat, E_INVALIDARG);
234
235	/* Enclose the state transition NotReady->InInit->Ready */
236	AutoInitSpan autoInitSpan(this);
237	AssertReturn(autoInitSpan.isOk(), E_FAIL);
238
239	m = new Data(aParent);
240
241	/* sanity */
242	AutoCaller thatCaller(aThat);
243	AssertComRCReturnRC(thatCaller.rc());
244
245	if (aReshare)
246	{
247	AutoWriteLock thatLock(aThat COMMA_LOCKVAL_SRC_POS);
248
249	unconst(aThat->m->pPeer) = this;
250	m->bd.attach (aThat->m->bd);
251	}
252	else
253	{
254	unconst(m->pPeer) = aThat;
255
256	AutoReadLock thatLock(aThat COMMA_LOCKVAL_SRC_POS);
257	m->bd.share (aThat->m->bd);
258	}
259
260	/* Confirm successful initialization */
261	autoInitSpan.setSucceeded();
262
263	return S_OK;
264	}
265
266	/**
267	* Initializes the storage controller object given another guest object
268	* (a kind of copy constructor). This object makes a private copy of data
269	* of the original object passed as an argument.
270	*/
271	HRESULT StorageController::initCopy(Machine aParent, StorageController aThat)
272	{
273	LogFlowThisFunc(("aParent=%p, aThat=%p\n", aParent, aThat));
274
275	ComAssertRet(aParent && aThat, E_INVALIDARG);
276
277	/* Enclose the state transition NotReady->InInit->Ready */
278	AutoInitSpan autoInitSpan(this);
279	AssertReturn(autoInitSpan.isOk(), E_FAIL);
280
281	m = new Data(aParent);
282	/* m->pPeer is left null */
283
284	AutoCaller thatCaller(aThat);
285	AssertComRCReturnRC(thatCaller.rc());
286
287	AutoReadLock thatlock(aThat COMMA_LOCKVAL_SRC_POS);
288	m->bd.attachCopy(aThat->m->bd);
289
290	/* Confirm a successful initialization */
291	autoInitSpan.setSucceeded();
292
293	return S_OK;
294	}
295
296
297	/**
298	* Uninitializes the instance and sets the ready flag to FALSE.
299	* Called either from FinalRelease() or by the parent when it gets destroyed.
300	*/
301	void StorageController::uninit()
302	{
303	LogFlowThisFunc(("\n"));
304
305	/* Enclose the state transition Ready->InUninit->NotReady */
306	AutoUninitSpan autoUninitSpan(this);
307	if (autoUninitSpan.uninitDone())
308	return;
309
310	m->bd.free();
311
312	unconst(m->pPeer) = NULL;
313	unconst(m->pParent) = NULL;
314
315	delete m;
316	m = NULL;
317	}
318
319
320	// IStorageController properties
321	HRESULT StorageController::getName(com::Utf8Str &aName)
322	{
323	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
324
325	/* mName is constant during life time, no need to lock */
326	aName = m->bd.data()->strName;
327
328	return S_OK;
329	}
330
331	HRESULT StorageController::getBus(StorageBus_T *aBus)
332	{
333	CheckComArgOutPointerValid(aBus);
334
335	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
336
337	*aBus = m->bd->mStorageBus;
338
339	return S_OK;
340	}
341
342	HRESULT StorageController::getControllerType(StorageControllerType_T *aControllerType)
343	{
344	CheckComArgOutPointerValid(aControllerType);
345
346	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
347
348	*aControllerType = m->bd->mStorageControllerType;
349
350	return S_OK;
351	}
352
353	HRESULT StorageController::setControllerType(StorageControllerType_T aControllerType)
354	{
355	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
356
357	HRESULT rc = S_OK;
358
359	switch (m->bd->mStorageBus)
360	{
361	case StorageBus_IDE:
362	{
363	if ( (aControllerType != StorageControllerType_PIIX3)
364	&& (aControllerType != StorageControllerType_PIIX4)
365	&& (aControllerType != StorageControllerType_ICH6))
366	rc = E_INVALIDARG;
367	break;
368	}
369	case StorageBus_SATA:
370	{
371	if (aControllerType != StorageControllerType_IntelAhci)
372	rc = E_INVALIDARG;
373	break;
374	}
375	case StorageBus_SCSI:
376	{
377	if ( (aControllerType != StorageControllerType_LsiLogic)
378	&& (aControllerType != StorageControllerType_BusLogic))
379	rc = E_INVALIDARG;
380	break;
381	}
382	case StorageBus_Floppy:
383	{
384	if (aControllerType != StorageControllerType_I82078)
385	rc = E_INVALIDARG;
386	break;
387	}
388	case StorageBus_SAS:
389	{
390	if (aControllerType != StorageControllerType_LsiLogicSas)
391	rc = E_INVALIDARG;
392	break;
393	}
394	case StorageBus_USB:
395	{
396	if (aControllerType != StorageControllerType_USB)
397	rc = E_INVALIDARG;
398	break;
399	}
400	default:
401	AssertMsgFailed(("Invalid controller type %d\n", m->bd->mStorageBus));
402	}
403
404	if (!SUCCEEDED(rc))
405	return setError(rc,
406	tr ("Invalid controller type %d"),
407	aControllerType);
408
409	m->bd->mStorageControllerType = aControllerType;
410
411	return S_OK;
412	}
413
414	HRESULT StorageController::getMaxDevicesPerPortCount(ULONG *aMaxDevicesPerPortCount)
415	{
416	CheckComArgOutPointerValid(aMaxDevicesPerPortCount);
417
418	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
419
420	HRESULT rc = m->pSystemProperties->GetMaxDevicesPerPortForStorageBus(m->bd->mStorageBus, aMaxDevicesPerPortCount);
421
422	return rc;
423	}
424
425	HRESULT StorageController::getMinPortCount(ULONG *aMinPortCount)
426	{
427	CheckComArgOutPointerValid(aMinPortCount);
428
429	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
430
431	HRESULT rc = m->pSystemProperties->GetMinPortCountForStorageBus(m->bd->mStorageBus, aMinPortCount);
432	return rc;
433	}
434
435	HRESULT StorageController::getMaxPortCount(ULONG *aMaxPortCount)
436	{
437	CheckComArgOutPointerValid(aMaxPortCount);
438
439	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
440	HRESULT rc = m->pSystemProperties->GetMaxPortCountForStorageBus(m->bd->mStorageBus, aMaxPortCount);
441
442	return rc;
443	}
444
445	HRESULT StorageController::getPortCount(ULONG *aPortCount)
446	{
447	CheckComArgOutPointerValid(aPortCount);
448
449	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
450
451	*aPortCount = m->bd->mPortCount;
452
453	return S_OK;
454	}
455
456	HRESULT StorageController::setPortCount(ULONG aPortCount)
457	{
458	LogFlowThisFunc(("aPortCount=%u\n", aPortCount));
459
460	switch (m->bd->mStorageBus)
461	{
462	case StorageBus_SATA:
463	{
464	/* AHCI SATA supports a maximum of 30 ports. */
465	if (aPortCount < 1 \|\| aPortCount > 30)
466	return setError(E_INVALIDARG,
467	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
468	aPortCount, 1, 30);
469	break;
470	}
471	case StorageBus_SCSI:
472	{
473	/*
474	* SCSI does not support setting different ports.
475	* (doesn't make sense here either).
476	* The maximum and minimum is 16 and unless the callee
477	* tries to set a different value we return an error.
478	*/
479	if (aPortCount != 16)
480	return setError(E_INVALIDARG,
481	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
482	aPortCount, 16, 16);
483	break;
484	}
485	case StorageBus_IDE:
486	{
487	/*
488	* The port count is fixed to 2.
489	*/
490	if (aPortCount != 2)
491	return setError(E_INVALIDARG,
492	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
493	aPortCount, 2, 2);
494	break;
495	}
496	case StorageBus_Floppy:
497	{
498	/*
499	* The port count is fixed to 1.
500	*/
501	if (aPortCount != 1)
502	return setError(E_INVALIDARG,
503	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
504	aPortCount, 1, 1);
505	break;
506	}
507	case StorageBus_SAS:
508	{
509	/* SAS supports a maximum of 255 ports. */
510	if (aPortCount < 1 \|\| aPortCount > 255)
511	return setError(E_INVALIDARG,
512	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
513	aPortCount, 1, 255);
514	break;
515	}
516	case StorageBus_USB:
517	{
518	/*
519	* The port count is fixed to 8.
520	*/
521	if (aPortCount != 8)
522	return setError(E_INVALIDARG,
523	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
524	aPortCount, 8, 8);
525	break;
526	}
527	default:
528	AssertMsgFailed(("Invalid controller type %d\n", m->bd->mStorageBus));
529	}
530
531	AutoCaller autoCaller(this);
532	if (FAILED(autoCaller.rc())) return autoCaller.rc();
533
534	/* the machine needs to be mutable */
535	AutoMutableStateDependency adep(m->pParent);
536	if (FAILED(adep.rc())) return adep.rc();
537
538	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
539
540	if (m->bd->mPortCount != aPortCount)
541	{
542	m->bd.backup();
543	m->bd->mPortCount = aPortCount;
544
545	alock.release();
546	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
547	m->pParent->i_setModified(Machine::IsModified_Storage);
548	mlock.release();
549
550	m->pParent->i_onStorageControllerChange();
551	}
552
553	return S_OK;
554	}
555
556	HRESULT StorageController::getInstance(ULONG *aInstance)
557	{
558	/* The machine doesn't need to be mutable. */
559
560	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
561
562	*aInstance = m->bd->mInstance;
563
564	return S_OK;
565	}
566
567	HRESULT StorageController::setInstance(ULONG aInstance)
568	{
569	/* The machine doesn't need to be mutable. */
570
571	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
572
573	m->bd->mInstance = aInstance;
574
575	return S_OK;
576	}
577
578	HRESULT StorageController::getUseHostIOCache(BOOL *fUseHostIOCache)
579	{
580	/* The machine doesn't need to be mutable. */
581
582	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
583
584	*fUseHostIOCache = m->bd->fUseHostIOCache;
585
586	return S_OK;
587	}
588
589	HRESULT StorageController::setUseHostIOCache(BOOL fUseHostIOCache)
590	{
591	/* the machine needs to be mutable */
592	AutoMutableStateDependency adep(m->pParent);
593	if (FAILED(adep.rc())) return adep.rc();
594
595	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
596
597	if (m->bd->fUseHostIOCache != !!fUseHostIOCache)
598	{
599	m->bd.backup();
600	m->bd->fUseHostIOCache = !!fUseHostIOCache;
601
602	alock.release();
603	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
604	m->pParent->i_setModified(Machine::IsModified_Storage);
605	mlock.release();
606
607	m->pParent->i_onStorageControllerChange();
608	}
609
610	return S_OK;
611	}
612
613	HRESULT StorageController::getBootable(BOOL *fBootable)
614	{
615
616	/* The machine doesn't need to be mutable. */
617
618	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
619
620	*fBootable = m->bd->fBootable;
621
622	return S_OK;
623	}
624
625	// public methods only for internal purposes
626	/////////////////////////////////////////////////////////////////////////////
627
628	HRESULT StorageController::i_getIDEEmulationPort(LONG DevicePosition, LONG *aPortNumber)
629	{
630	CheckComArgOutPointerValid(aPortNumber);
631
632	AutoCaller autoCaller(this);
633	if (FAILED(autoCaller.rc())) return autoCaller.rc();
634
635	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
636
637	if (m->bd->mStorageControllerType != StorageControllerType_IntelAhci)
638	return setError(E_NOTIMPL,
639	tr("Invalid controller type"));
640
641	switch (DevicePosition)
642	{
643	case 0:
644	*aPortNumber = m->bd->mPortIde0Master;
645	break;
646	case 1:
647	*aPortNumber = m->bd->mPortIde0Slave;
648	break;
649	case 2:
650	*aPortNumber = m->bd->mPortIde1Master;
651	break;
652	case 3:
653	*aPortNumber = m->bd->mPortIde1Slave;
654	break;
655	default:
656	return E_INVALIDARG;
657	}
658
659	return S_OK;
660	}
661
662	HRESULT StorageController::i_setIDEEmulationPort(LONG DevicePosition, LONG aPortNumber)
663	{
664	AutoCaller autoCaller(this);
665	if (FAILED(autoCaller.rc())) return autoCaller.rc();
666
667	/* the machine needs to be mutable */
668	AutoMutableStateDependency adep(m->pParent);
669	if (FAILED(adep.rc())) return adep.rc();
670	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
671
672	if (m->bd->mStorageControllerType != StorageControllerType_IntelAhci)
673	return setError(E_NOTIMPL,
674	tr("Invalid controller type"));
675
676	if (aPortNumber < 0 \|\| aPortNumber >= 30)
677	return setError(E_INVALIDARG,
678	tr("Invalid port number: %ld (must be in range [%lu, %lu])"),
679	aPortNumber, 0, 29);
680
681	switch (DevicePosition)
682	{
683	case 0:
684	m->bd->mPortIde0Master = aPortNumber;
685	break;
686	case 1:
687	m->bd->mPortIde0Slave = aPortNumber;
688	break;
689	case 2:
690	m->bd->mPortIde1Master = aPortNumber;
691	break;
692	case 3:
693	m->bd->mPortIde1Slave = aPortNumber;
694	break;
695	default:
696	return E_INVALIDARG;
697	}
698
699	return S_OK;
700	}
701
702	const Utf8Str& StorageController::i_getName() const
703	{
704	return m->bd->strName;
705	}
706
707	StorageControllerType_T StorageController::i_getControllerType() const
708	{
709	return m->bd->mStorageControllerType;
710	}
711
712	StorageBus_T StorageController::i_getStorageBus() const
713	{
714	return m->bd->mStorageBus;
715	}
716
717	ULONG StorageController::i_getInstance() const
718	{
719	return m->bd->mInstance;
720	}
721
722	bool StorageController::i_getBootable() const
723	{
724	return !!m->bd->fBootable;
725	}
726
727	/**
728	* Returns S_OK if the given port and device numbers are within the range supported
729	* by this controller. If not, it sets an error and returns E_INVALIDARG.
730	* @param ulPort
731	* @param ulDevice
732	* @return
733	*/
734	HRESULT StorageController::i_checkPortAndDeviceValid(LONG aControllerPort,
735	LONG aDevice)
736	{
737	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
738
739	ULONG portCount = m->bd->mPortCount;
740	ULONG devicesPerPort;
741	HRESULT rc = m->pSystemProperties->GetMaxDevicesPerPortForStorageBus(m->bd->mStorageBus, &devicesPerPort);
742	if (FAILED(rc)) return rc;
743
744	if ( aControllerPort < 0
745	\|\| aControllerPort >= (LONG)portCount
746	\|\| aDevice < 0
747	\|\| aDevice >= (LONG)devicesPerPort
748	)
749	return setError(E_INVALIDARG,
750	tr("The port and/or device parameter are out of range: port=%d (must be in range [0, %d]), device=%d (must be in range [0, %d])"),
751	(int)aControllerPort, (int)portCount-1, (int)aDevice, (int)devicesPerPort-1);
752
753	return S_OK;
754	}
755
756	/** @note Locks objects for writing! */
757	void StorageController::i_setBootable(BOOL fBootable)
758	{
759	AutoCaller autoCaller(this);
760	AssertComRCReturnVoid(autoCaller.rc());
761
762	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
763
764	m->bd.backup();
765	m->bd->fBootable = fBootable;
766	}
767
768	/** @note Locks objects for writing! */
769	void StorageController::i_rollback()
770	{
771	AutoCaller autoCaller(this);
772	AssertComRCReturnVoid(autoCaller.rc());
773
774	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
775
776	m->bd.rollback();
777	}
778
779	/**
780	* @note Locks this object for writing, together with the peer object (also
781	* for writing) if there is one.
782	*/
783	void StorageController::i_commit()
784	{
785	/* sanity */
786	AutoCaller autoCaller(this);
787	AssertComRCReturnVoid (autoCaller.rc());
788
789	/* sanity too */
790	AutoCaller peerCaller (m->pPeer);
791	AssertComRCReturnVoid (peerCaller.rc());
792
793	/* lock both for writing since we modify both (m->pPeer is "master" so locked
794	* first) */
795	AutoMultiWriteLock2 alock(m->pPeer, this COMMA_LOCKVAL_SRC_POS);
796
797	if (m->bd.isBackedUp())
798	{
799	m->bd.commit();
800	if (m->pPeer)
801	{
802	// attach new data to the peer and reshare it
803	m->pPeer->m->bd.attach (m->bd);
804	}
805	}
806	}
807
808	/**
809	* Cancels sharing (if any) by making an independent copy of data.
810	* This operation also resets this object's peer to NULL.
811	*
812	* @note Locks this object for writing, together with the peer object
813	* represented by @a aThat (locked for reading).
814	*/
815	void StorageController::i_unshare()
816	{
817	/* sanity */
818	AutoCaller autoCaller(this);
819	AssertComRCReturnVoid (autoCaller.rc());
820
821	/* sanity too */
822	AutoCaller peerCaller (m->pPeer);
823	AssertComRCReturnVoid (peerCaller.rc());
824
825	/* peer is not modified, lock it for reading (m->pPeer is "master" so locked
826	* first) */
827	AutoReadLock rl(m->pPeer COMMA_LOCKVAL_SRC_POS);
828	AutoWriteLock wl(this COMMA_LOCKVAL_SRC_POS);
829
830	if (m->bd.isShared())
831	{
832	if (!m->bd.isBackedUp())
833	m->bd.backup();
834
835	m->bd.commit();
836	}
837
838	unconst(m->pPeer) = NULL;
839	}
840
841	Machine* StorageController::i_getMachine()
842	{
843	return m->pParent;
844	}
845
846	ComObjPtr<StorageController> StorageController::i_getPeer()
847	{
848	return m->pPeer;
849	}
850
851	// private methods
852	/////////////////////////////////////////////////////////////////////////////
853
854
855	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-server/StorageControllerImpl.cpp@ 51498

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