StorageControllerImpl.cpp@ 98292

Last change on this file since 98292 was 98292, checked in by vboxsync, 23 months ago
Main/src-server: rc -> hrc/vrc. Enabled scm rc checks. bugref:10223
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1	/* $Id: StorageControllerImpl.cpp 98292 2023-01-25 01:14:53Z vboxsync $ */
2	/** @file
3	* Implementation of IStorageController.
4	*/
5
6	/*
7	* Copyright (C) 2008-2023 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	#define LOG_GROUP LOG_GROUP_MAIN_STORAGECONTROLLER
29	#include "StorageControllerImpl.h"
30	#include "MachineImpl.h"
31	#include "VirtualBoxImpl.h"
32	#include "SystemPropertiesImpl.h"
33
34	#include <iprt/string.h>
35	#include <iprt/cpp/utils.h>
36
37	#include <iprt/errcore.h>
38	#include <VBox/settings.h>
39
40	#include <algorithm>
41
42	#include "AutoStateDep.h"
43	#include "AutoCaller.h"
44	#include "LoggingNew.h"
45
46	// defines
47	/////////////////////////////////////////////////////////////////////////////
48
49	struct StorageController::Data
50	{
51	Data(Machine * const aMachine)
52	: pVirtualBox(NULL),
53	pSystemProperties(NULL),
54	pParent(aMachine)
55	{
56	unconst(pVirtualBox) = aMachine->i_getVirtualBox();
57	unconst(pSystemProperties) = pVirtualBox->i_getSystemProperties();
58	}
59
60	VirtualBox * const pVirtualBox;
61	SystemProperties * const pSystemProperties;
62	Machine * const pParent;
63	const ComObjPtr<StorageController> pPeer;
64
65	Backupable<settings::StorageController> bd;
66	};
67
68
69	// constructor / destructor
70	/////////////////////////////////////////////////////////////////////////////
71
72	DEFINE_EMPTY_CTOR_DTOR(StorageController)
73
74	HRESULT StorageController::FinalConstruct()
75	{
76	return BaseFinalConstruct();
77	}
78
79	void StorageController::FinalRelease()
80	{
81	uninit();
82	BaseFinalRelease();
83	}
84
85	// public initializer/uninitializer for internal purposes only
86	/////////////////////////////////////////////////////////////////////////////
87
88	/**
89	* Initializes the storage controller object.
90	*
91	* @returns COM result indicator.
92	* @param aParent Pointer to our parent object.
93	* @param aName Name of the storage controller.
94	* @param aStorageBus Type of the storage bus.
95	* @param aInstance Instance number of the storage controller.
96	* @param fBootable Bootable flag.
97	*/
98	HRESULT StorageController::init(Machine *aParent,
99	const Utf8Str &aName,
100	StorageBus_T aStorageBus,
101	ULONG aInstance, bool fBootable)
102	{
103	LogFlowThisFunc(("aParent=%p aName=\"%s\" aInstance=%u\n",
104	aParent, aName.c_str(), aInstance));
105
106	ComAssertRet(aParent && !aName.isEmpty(), E_INVALIDARG);
107	if ( (aStorageBus <= StorageBus_Null)
108	\|\| (aStorageBus > StorageBus_VirtioSCSI))
109	return setError(E_INVALIDARG,
110	tr("Invalid storage connection type"));
111
112	ULONG maxInstances;
113	ChipsetType_T chipsetType;
114	HRESULT hrc = aParent->COMGETTER(ChipsetType)(&chipsetType);
115	if (FAILED(hrc))
116	return hrc;
117	hrc = aParent->i_getVirtualBox()->i_getSystemProperties()->
118	GetMaxInstancesOfStorageBus(chipsetType, aStorageBus, &maxInstances);
119	if (FAILED(hrc))
120	return hrc;
121	if (aInstance >= maxInstances)
122	return setError(E_INVALIDARG,
123	tr("Too many storage controllers of this type"));
124
125	/* Enclose the state transition NotReady->InInit->Ready */
126	AutoInitSpan autoInitSpan(this);
127	AssertReturn(autoInitSpan.isOk(), E_FAIL);
128
129	m = new Data(aParent);
130
131	/* m->pPeer is left null */
132
133	m->bd.allocate();
134
135	m->bd->strName = aName;
136	m->bd->ulInstance = aInstance;
137	m->bd->fBootable = fBootable;
138	m->bd->storageBus = aStorageBus;
139	if ( aStorageBus != StorageBus_IDE
140	&& aStorageBus != StorageBus_Floppy)
141	m->bd->fUseHostIOCache = false;
142	else
143	m->bd->fUseHostIOCache = true;
144
145	switch (aStorageBus)
146	{
147	case StorageBus_IDE:
148	m->bd->ulPortCount = 2;
149	m->bd->controllerType = StorageControllerType_PIIX4;
150	break;
151	case StorageBus_SATA:
152	m->bd->ulPortCount = 30;
153	m->bd->controllerType = StorageControllerType_IntelAhci;
154	break;
155	case StorageBus_SCSI:
156	m->bd->ulPortCount = 16;
157	m->bd->controllerType = StorageControllerType_LsiLogic;
158	break;
159	case StorageBus_Floppy:
160	m->bd->ulPortCount = 1;
161	m->bd->controllerType = StorageControllerType_I82078;
162	break;
163	case StorageBus_SAS:
164	m->bd->ulPortCount = 8;
165	m->bd->controllerType = StorageControllerType_LsiLogicSas;
166	break;
167	case StorageBus_USB:
168	m->bd->ulPortCount = 8;
169	m->bd->controllerType = StorageControllerType_USB;
170	break;
171	case StorageBus_PCIe:
172	m->bd->ulPortCount = 1;
173	m->bd->controllerType = StorageControllerType_NVMe;
174	break;
175	case StorageBus_VirtioSCSI:
176	m->bd->ulPortCount = 1;
177	m->bd->controllerType = StorageControllerType_VirtioSCSI;
178	break;
179	case StorageBus_Null: break; /* Shut up MSC. */
180	#ifdef VBOX_WITH_XPCOM_CPP_ENUM_HACK
181	case StorageBus_32BitHack: break; /* Shut up GCC. */
182	#endif
183	}
184
185	/* Confirm a successful initialization */
186	autoInitSpan.setSucceeded();
187
188	return S_OK;
189	}
190
191	/**
192	* Initializes the object given another object
193	* (a kind of copy constructor). This object shares data with
194	* the object passed as an argument.
195	*
196	* @param aParent Pointer to our parent object.
197	* @param aThat
198	* @param aReshare
199	* When false, the original object will remain a data owner.
200	* Otherwise, data ownership will be transferred from the original
201	* object to this one.
202	*
203	* @note This object must be destroyed before the original object
204	* it shares data with is destroyed.
205	*
206	* @note Locks @a aThat object for writing if @a aReshare is @c true, or for
207	* reading if @a aReshare is false.
208	*/
209	HRESULT StorageController::init(Machine *aParent,
210	StorageController *aThat,
211	bool aReshare /* = false */)
212	{
213	LogFlowThisFunc(("aParent=%p, aThat=%p, aReshare=%RTbool\n",
214	aParent, aThat, aReshare));
215
216	ComAssertRet(aParent && aThat, E_INVALIDARG);
217
218	/* Enclose the state transition NotReady->InInit->Ready */
219	AutoInitSpan autoInitSpan(this);
220	AssertReturn(autoInitSpan.isOk(), E_FAIL);
221
222	m = new Data(aParent);
223
224	/* sanity */
225	AutoCaller thatCaller(aThat);
226	AssertComRCReturnRC(thatCaller.hrc());
227
228	if (aReshare)
229	{
230	AutoWriteLock thatLock(aThat COMMA_LOCKVAL_SRC_POS);
231
232	unconst(aThat->m->pPeer) = this;
233	m->bd.attach(aThat->m->bd);
234	}
235	else
236	{
237	unconst(m->pPeer) = aThat;
238
239	AutoReadLock thatLock(aThat COMMA_LOCKVAL_SRC_POS);
240	m->bd.share(aThat->m->bd);
241	}
242
243	/* Confirm successful initialization */
244	autoInitSpan.setSucceeded();
245
246	return S_OK;
247	}
248
249	/**
250	* Initializes the storage controller object given another guest object
251	* (a kind of copy constructor). This object makes a private copy of data
252	* of the original object passed as an argument.
253	*/
254	HRESULT StorageController::initCopy(Machine aParent, StorageController aThat)
255	{
256	LogFlowThisFunc(("aParent=%p, aThat=%p\n", aParent, aThat));
257
258	ComAssertRet(aParent && aThat, E_INVALIDARG);
259
260	/* Enclose the state transition NotReady->InInit->Ready */
261	AutoInitSpan autoInitSpan(this);
262	AssertReturn(autoInitSpan.isOk(), E_FAIL);
263
264	m = new Data(aParent);
265	/* m->pPeer is left null */
266
267	AutoCaller thatCaller(aThat);
268	AssertComRCReturnRC(thatCaller.hrc());
269
270	AutoReadLock thatlock(aThat COMMA_LOCKVAL_SRC_POS);
271	m->bd.attachCopy(aThat->m->bd);
272
273	/* Confirm a successful initialization */
274	autoInitSpan.setSucceeded();
275
276	return S_OK;
277	}
278
279
280	/**
281	* Uninitializes the instance and sets the ready flag to FALSE.
282	* Called either from FinalRelease() or by the parent when it gets destroyed.
283	*/
284	void StorageController::uninit()
285	{
286	LogFlowThisFunc(("\n"));
287
288	/* Enclose the state transition Ready->InUninit->NotReady */
289	AutoUninitSpan autoUninitSpan(this);
290	if (autoUninitSpan.uninitDone())
291	return;
292
293	m->bd.free();
294
295	unconst(m->pPeer) = NULL;
296	unconst(m->pParent) = NULL;
297
298	delete m;
299	m = NULL;
300	}
301
302
303	// IStorageController properties
304	HRESULT StorageController::getName(com::Utf8Str &aName)
305	{
306	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
307
308	aName = m->bd->strName;
309
310	return S_OK;
311	}
312
313	HRESULT StorageController::setName(const com::Utf8Str &aName)
314	{
315	/* the machine needs to be mutable */
316	AutoMutableStateDependency adep(m->pParent);
317	if (FAILED(adep.hrc())) return adep.hrc();
318
319	AutoMultiWriteLock2 alock(m->pParent, this COMMA_LOCKVAL_SRC_POS);
320
321	if (m->bd->strName != aName)
322	{
323	ComObjPtr<StorageController> ctrl;
324	HRESULT hrc = m->pParent->i_getStorageControllerByName(aName, ctrl, false /* aSetError */);
325	if (SUCCEEDED(hrc))
326	return setError(VBOX_E_OBJECT_IN_USE,
327	tr("Storage controller named '%s' already exists"),
328	aName.c_str());
329
330	Machine::MediumAttachmentList atts;
331	hrc = m->pParent->i_getMediumAttachmentsOfController(m->bd->strName, atts);
332	for (Machine::MediumAttachmentList::const_iterator
333	it = atts.begin();
334	it != atts.end();
335	++it)
336	{
337	IMediumAttachment iA = it;
338	MediumAttachment pAttach = static_cast<MediumAttachment >(iA);
339	AutoWriteLock attlock(pAttach COMMA_LOCKVAL_SRC_POS);
340	pAttach->i_updateName(aName);
341	}
342
343
344	m->bd.backup();
345	m->bd->strName = aName;
346
347	m->pParent->i_setModified(Machine::IsModified_Storage);
348	alock.release();
349
350	m->pParent->i_onStorageControllerChange(m->pParent->i_getId(), aName);
351	}
352
353	return S_OK;
354	}
355
356	HRESULT StorageController::getBus(StorageBus_T *aBus)
357	{
358	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
359
360	*aBus = m->bd->storageBus;
361
362	return S_OK;
363	}
364
365	HRESULT StorageController::getControllerType(StorageControllerType_T *aControllerType)
366	{
367	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
368
369	*aControllerType = m->bd->controllerType;
370
371	return S_OK;
372	}
373
374	HRESULT StorageController::setControllerType(StorageControllerType_T aControllerType)
375	{
376	/* the machine needs to be mutable */
377	AutoMutableStateDependency adep(m->pParent);
378	if (FAILED(adep.hrc())) return adep.hrc();
379
380	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
381
382	HRESULT hrc = S_OK;
383	switch (m->bd->storageBus)
384	{
385	case StorageBus_IDE:
386	if ( (aControllerType != StorageControllerType_PIIX3)
387	&& (aControllerType != StorageControllerType_PIIX4)
388	&& (aControllerType != StorageControllerType_ICH6))
389	hrc = E_INVALIDARG;
390	break;
391	case StorageBus_SATA:
392	if (aControllerType != StorageControllerType_IntelAhci)
393	hrc = E_INVALIDARG;
394	break;
395	case StorageBus_SCSI:
396	if ( (aControllerType != StorageControllerType_LsiLogic)
397	&& (aControllerType != StorageControllerType_BusLogic))
398	hrc = E_INVALIDARG;
399	break;
400	case StorageBus_Floppy:
401	if (aControllerType != StorageControllerType_I82078)
402	hrc = E_INVALIDARG;
403	break;
404	case StorageBus_SAS:
405	if (aControllerType != StorageControllerType_LsiLogicSas)
406	hrc = E_INVALIDARG;
407	break;
408	case StorageBus_USB:
409	if (aControllerType != StorageControllerType_USB)
410	hrc = E_INVALIDARG;
411	break;
412	case StorageBus_PCIe:
413	if (aControllerType != StorageControllerType_NVMe)
414	hrc = E_INVALIDARG;
415	break;
416	case StorageBus_VirtioSCSI:
417	if (aControllerType != StorageControllerType_VirtioSCSI)
418	hrc = E_INVALIDARG;
419	break;
420	default:
421	AssertMsgFailed(("Invalid controller type %d\n", m->bd->storageBus));
422	hrc = E_INVALIDARG;
423	break;
424	}
425
426	if (!SUCCEEDED(hrc))
427	return setError(hrc, tr("Invalid controller type %d"), aControllerType);
428
429	if (m->bd->controllerType != aControllerType)
430	{
431	m->bd.backup();
432	m->bd->controllerType = aControllerType;
433
434	alock.release();
435	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
436	m->pParent->i_setModified(Machine::IsModified_Storage);
437	mlock.release();
438
439	m->pParent->i_onStorageControllerChange(m->pParent->i_getId(), m->bd->strName);
440	}
441
442	return S_OK;
443	}
444
445	HRESULT StorageController::getMaxDevicesPerPortCount(ULONG *aMaxDevicesPerPortCount)
446	{
447	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
448	return m->pSystemProperties->GetMaxDevicesPerPortForStorageBus(m->bd->storageBus, aMaxDevicesPerPortCount);
449	}
450
451	HRESULT StorageController::getMinPortCount(ULONG *aMinPortCount)
452	{
453	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
454	return m->pSystemProperties->GetMinPortCountForStorageBus(m->bd->storageBus, aMinPortCount);
455	}
456
457	HRESULT StorageController::getMaxPortCount(ULONG *aMaxPortCount)
458	{
459	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
460	return m->pSystemProperties->GetMaxPortCountForStorageBus(m->bd->storageBus, aMaxPortCount);
461	}
462
463	HRESULT StorageController::getPortCount(ULONG *aPortCount)
464	{
465	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
466
467	*aPortCount = m->bd->ulPortCount;
468
469	return S_OK;
470	}
471
472	HRESULT StorageController::setPortCount(ULONG aPortCount)
473	{
474	/* the machine needs to be mutable */
475	AutoMutableStateDependency adep(m->pParent);
476	if (FAILED(adep.hrc())) return adep.hrc();
477
478	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
479
480	switch (m->bd->storageBus)
481	{
482	case StorageBus_SATA:
483	{
484	/* AHCI SATA supports a maximum of 30 ports. */
485	if (aPortCount < 1 \|\| aPortCount > 30)
486	return setError(E_INVALIDARG,
487	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
488	aPortCount, 1, 30);
489	break;
490	}
491	case StorageBus_SCSI:
492	{
493	/*
494	* SCSI does not support setting different ports.
495	* (doesn't make sense here either).
496	* The maximum and minimum is 16 and unless the callee
497	* tries to set a different value we return an error.
498	*/
499	if (aPortCount != 16)
500	return setError(E_INVALIDARG,
501	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
502	aPortCount, 16, 16);
503	break;
504	}
505	case StorageBus_IDE:
506	{
507	/*
508	* The port count is fixed to 2.
509	*/
510	if (aPortCount != 2)
511	return setError(E_INVALIDARG,
512	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
513	aPortCount, 2, 2);
514	break;
515	}
516	case StorageBus_Floppy:
517	{
518	/*
519	* The port count is fixed to 1.
520	*/
521	if (aPortCount != 1)
522	return setError(E_INVALIDARG,
523	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
524	aPortCount, 1, 1);
525	break;
526	}
527	case StorageBus_SAS:
528	{
529	/* SAS supports a maximum of 255 ports. */
530	if (aPortCount < 1 \|\| aPortCount > 255)
531	return setError(E_INVALIDARG,
532	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
533	aPortCount, 1, 255);
534	break;
535	}
536	case StorageBus_USB:
537	{
538	/*
539	* The port count is fixed to 8.
540	*/
541	if (aPortCount != 8)
542	return setError(E_INVALIDARG,
543	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
544	aPortCount, 8, 8);
545	break;
546	}
547	case StorageBus_PCIe:
548	{
549	/*
550	* PCIe (NVMe in particular) supports theoretically 2^32 - 1
551	* different namespaces, limit the amount artifically here.
552	*/
553	if (aPortCount < 1 \|\| aPortCount > 255)
554	return setError(E_INVALIDARG,
555	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
556	aPortCount, 1, 255);
557	break;
558	}
559	case StorageBus_VirtioSCSI:
560	{
561	/*
562	* virtio-scsi supports 256 targets (with 16384 LUNs each).
563	*/
564	if (aPortCount < 1 \|\| aPortCount > 256)
565	return setError(E_INVALIDARG,
566	tr("Invalid port count: %lu (must be in range [%lu, %lu])"),
567	aPortCount, 1, 256);
568	break;
569	}
570	default:
571	AssertMsgFailed(("Invalid controller type %d\n", m->bd->storageBus));
572	}
573
574	if (m->bd->ulPortCount != aPortCount)
575	{
576	m->bd.backup();
577	m->bd->ulPortCount = aPortCount;
578
579	alock.release();
580	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
581	m->pParent->i_setModified(Machine::IsModified_Storage);
582	mlock.release();
583
584	m->pParent->i_onStorageControllerChange(m->pParent->i_getId(), m->bd->strName);
585	}
586
587	return S_OK;
588	}
589
590	HRESULT StorageController::getInstance(ULONG *aInstance)
591	{
592	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
593
594	*aInstance = m->bd->ulInstance;
595
596	return S_OK;
597	}
598
599	HRESULT StorageController::setInstance(ULONG aInstance)
600	{
601	/* the machine needs to be mutable */
602	AutoMutableStateDependency adep(m->pParent);
603	if (FAILED(adep.hrc())) return adep.hrc();
604
605	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
606
607	if (m->bd->ulInstance != aInstance)
608	{
609	m->bd.backup();
610	m->bd->ulInstance = aInstance;
611
612	alock.release();
613	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
614	m->pParent->i_setModified(Machine::IsModified_Storage);
615	mlock.release();
616
617	m->pParent->i_onStorageControllerChange(m->pParent->i_getId(), m->bd->strName);
618	}
619
620	return S_OK;
621	}
622
623	HRESULT StorageController::getUseHostIOCache(BOOL *fUseHostIOCache)
624	{
625	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
626
627	*fUseHostIOCache = m->bd->fUseHostIOCache;
628
629	return S_OK;
630	}
631
632	HRESULT StorageController::setUseHostIOCache(BOOL fUseHostIOCache)
633	{
634	/* the machine needs to be mutable */
635	AutoMutableStateDependency adep(m->pParent);
636	if (FAILED(adep.hrc())) return adep.hrc();
637
638	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
639
640	if (m->bd->fUseHostIOCache != !!fUseHostIOCache)
641	{
642	m->bd.backup();
643	m->bd->fUseHostIOCache = !!fUseHostIOCache;
644
645	alock.release();
646	AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); // m->pParent is const, needs no locking
647	m->pParent->i_setModified(Machine::IsModified_Storage);
648	mlock.release();
649
650	m->pParent->i_onStorageControllerChange(m->pParent->i_getId(), m->bd->strName);
651	}
652
653	return S_OK;
654	}
655
656	HRESULT StorageController::getBootable(BOOL *fBootable)
657	{
658	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
659
660	*fBootable = m->bd->fBootable;
661
662	return S_OK;
663	}
664
665	// public methods only for internal purposes
666	/////////////////////////////////////////////////////////////////////////////
667
668	const Utf8Str& StorageController::i_getName() const
669	{
670	return m->bd->strName;
671	}
672
673	StorageControllerType_T StorageController::i_getControllerType() const
674	{
675	return m->bd->controllerType;
676	}
677
678	StorageBus_T StorageController::i_getStorageBus() const
679	{
680	return m->bd->storageBus;
681	}
682
683	ULONG StorageController::i_getInstance() const
684	{
685	return m->bd->ulInstance;
686	}
687
688	bool StorageController::i_getBootable() const
689	{
690	return !!m->bd->fBootable;
691	}
692
693	/**
694	* Checks the validity of a port and device number.
695	*
696	* @retval S_OK If the given port and device numbers are within the range
697	* supported by this controller.
698	* @retval E_INVALIDARG If not. Sets an error.
699	* @param aControllerPort Controller port number.
700	* @param aDevice Device number.
701	*/
702	HRESULT StorageController::i_checkPortAndDeviceValid(LONG aControllerPort,
703	LONG aDevice)
704	{
705	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
706
707	ULONG portCount = m->bd->ulPortCount;
708	ULONG devicesPerPort;
709	HRESULT hrc = m->pSystemProperties->GetMaxDevicesPerPortForStorageBus(m->bd->storageBus, &devicesPerPort);
710	if (FAILED(hrc)) return hrc;
711
712	if ( aControllerPort < 0
713	\|\| aControllerPort >= (LONG)portCount
714	\|\| aDevice < 0
715	\|\| aDevice >= (LONG)devicesPerPort
716	)
717	return setError(E_INVALIDARG,
718	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])"),
719	(int)aControllerPort, (int)portCount-1, (int)aDevice, (int)devicesPerPort-1);
720
721	return S_OK;
722	}
723
724	/** @note Locks objects for writing! */
725	void StorageController::i_setBootable(BOOL fBootable)
726	{
727	AutoCaller autoCaller(this);
728	AssertComRCReturnVoid(autoCaller.hrc());
729
730	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
731
732	m->bd.backup();
733	m->bd->fBootable = RT_BOOL(fBootable);
734	}
735
736	/** @note Locks objects for writing! */
737	void StorageController::i_rollback()
738	{
739	AutoCaller autoCaller(this);
740	AssertComRCReturnVoid(autoCaller.hrc());
741
742	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
743
744	m->bd.rollback();
745	}
746
747	/**
748	* @note Locks this object for writing, together with the peer object (also
749	* for writing) if there is one.
750	*/
751	void StorageController::i_commit()
752	{
753	/* sanity */
754	AutoCaller autoCaller(this);
755	AssertComRCReturnVoid(autoCaller.hrc());
756
757	/* sanity too */
758	AutoCaller peerCaller(m->pPeer);
759	AssertComRCReturnVoid(peerCaller.hrc());
760
761	/* lock both for writing since we modify both (m->pPeer is "master" so locked
762	* first) */
763	AutoMultiWriteLock2 alock(m->pPeer, this COMMA_LOCKVAL_SRC_POS);
764
765	if (m->bd.isBackedUp())
766	{
767	m->bd.commit();
768	if (m->pPeer)
769	{
770	// attach new data to the peer and reshare it
771	m->pPeer->m->bd.attach(m->bd);
772	}
773	}
774	}
775
776	/**
777	* Cancels sharing (if any) by making an independent copy of data.
778	* This operation also resets this object's peer to NULL.
779	*
780	* @note Locks this object for writing, together with the peer object
781	* represented by @a aThat (locked for reading).
782	*/
783	void StorageController::i_unshare()
784	{
785	/* sanity */
786	AutoCaller autoCaller(this);
787	AssertComRCReturnVoid(autoCaller.hrc());
788
789	/* sanity too */
790	AutoCaller peerCaller(m->pPeer);
791	AssertComRCReturnVoid(peerCaller.hrc());
792
793	/* peer is not modified, lock it for reading (m->pPeer is "master" so locked
794	* first) */
795	AutoReadLock rl(m->pPeer COMMA_LOCKVAL_SRC_POS);
796	AutoWriteLock wl(this COMMA_LOCKVAL_SRC_POS);
797
798	if (m->bd.isShared())
799	{
800	if (!m->bd.isBackedUp())
801	m->bd.backup();
802
803	m->bd.commit();
804	}
805
806	unconst(m->pPeer) = NULL;
807	}
808
809	Machine* StorageController::i_getMachine()
810	{
811	return m->pParent;
812	}
813
814	ComObjPtr<StorageController> StorageController::i_getPeer()
815	{
816	return m->pPeer;
817	}
818
819	// private methods
820	/////////////////////////////////////////////////////////////////////////////
821
822
823	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-server/StorageControllerImpl.cpp@ 98292

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