MachineImpl.cpp@ 6310

Last change on this file since 6310 was 6276, checked in by vboxsync, 17 years ago
Main: start VBoxHeadless instead of VBoxVRDP
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File size: 311.6 KB

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1	/** @file
2	*
3	* VirtualBox COM class implementation
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
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	#if defined(RT_OS_WINDOWS)
19	#elif defined(RT_OS_LINUX)
20	#endif
21
22	#ifdef VBOX_WITH_SYS_V_IPC_SESSION_WATCHER
23	# include <errno.h>
24	# include <sys/types.h>
25	# include <sys/stat.h>
26	# include <sys/ipc.h>
27	# include <sys/sem.h>
28	#endif
29
30	#include "VirtualBoxImpl.h"
31	#include "MachineImpl.h"
32	#include "HardDiskImpl.h"
33	#include "ProgressImpl.h"
34	#include "HardDiskAttachmentImpl.h"
35	#include "USBControllerImpl.h"
36	#include "HostImpl.h"
37	#include "SystemPropertiesImpl.h"
38	#include "SharedFolderImpl.h"
39	#include "GuestOSTypeImpl.h"
40	#include "VirtualBoxErrorInfoImpl.h"
41	#include "GuestImpl.h"
42
43	#include "USBProxyService.h"
44
45	#include "VirtualBoxXMLUtil.h"
46
47	#include "Logging.h"
48
49	#include <stdio.h>
50	#include <stdlib.h>
51
52	#include <iprt/path.h>
53	#include <iprt/dir.h>
54	#include <iprt/asm.h>
55	#include <iprt/process.h>
56	#include <iprt/cpputils.h>
57	#include <iprt/env.h>
58
59	#include <VBox/err.h>
60	#include <VBox/param.h>
61
62	#include <algorithm>
63
64	#include <typeinfo>
65
66	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
67	#define HOSTSUFF_EXE ".exe"
68	#else /* !RT_OS_WINDOWS */
69	#define HOSTSUFF_EXE ""
70	#endif /* !RT_OS_WINDOWS */
71
72	// defines / prototypes
73	/////////////////////////////////////////////////////////////////////////////
74
75	// globals
76	/////////////////////////////////////////////////////////////////////////////
77
78	/**
79	* @note The template is NOT completely valid according to VBOX_XML_SCHEMA
80	* (when loading a newly created settings file, validation will be turned off)
81	*/
82	static const char DefaultMachineConfig[] =
83	{
84	"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" RTFILE_LINEFEED
85	"<!-- innotek VirtualBox Machine Configuration -->" RTFILE_LINEFEED
86	"<VirtualBox xmlns=\"" VBOX_XML_NAMESPACE "\" "
87	"version=\"" VBOX_XML_VERSION "-" VBOX_XML_PLATFORM "\">" RTFILE_LINEFEED
88	"</VirtualBox>" RTFILE_LINEFEED
89	};
90
91	/**
92	* Progress callback handler for lengthy operations
93	* (corresponds to the FNRTPROGRESS typedef).
94	*
95	* @param uPercentage Completetion precentage (0-100).
96	* @param pvUser Pointer to the Progress instance.
97	*/
98	static DECLCALLBACK(int) progressCallback (unsigned uPercentage, void *pvUser)
99	{
100	Progress progress = static_cast <Progress > (pvUser);
101
102	/* update the progress object */
103	if (progress)
104	progress->notifyProgress (uPercentage);
105
106	return VINF_SUCCESS;
107	}
108
109	/////////////////////////////////////////////////////////////////////////////
110	// Machine::Data structure
111	/////////////////////////////////////////////////////////////////////////////
112
113	Machine::Data::Data()
114	{
115	mRegistered = FALSE;
116	/* mUuid is initialized in Machine::init() */
117
118	mMachineState = MachineState_PoweredOff;
119	RTTimeNow (&mLastStateChange);
120
121	mMachineStateDeps = 0;
122	mZeroMachineStateDepsSem = NIL_RTSEMEVENT;
123	mWaitingStateDeps = FALSE;
124
125	mCurrentStateModified = TRUE;
126	mHandleCfgFile = NIL_RTFILE;
127
128	mSession.mPid = NIL_RTPROCESS;
129	mSession.mState = SessionState_SessionClosed;
130	}
131
132	Machine::Data::~Data()
133	{
134	if (mZeroMachineStateDepsSem != NIL_RTSEMEVENT)
135	{
136	RTSemEventDestroy (mZeroMachineStateDepsSem);
137	mZeroMachineStateDepsSem = NIL_RTSEMEVENT;
138	}
139	}
140
141	/////////////////////////////////////////////////////////////////////////////
142	// Machine::UserData structure
143	/////////////////////////////////////////////////////////////////////////////
144
145	Machine::UserData::UserData()
146	{
147	/* default values for a newly created machine */
148
149	mNameSync = TRUE;
150
151	/* mName, mOSTypeId, mSnapshotFolder, mSnapshotFolderFull are initialized in
152	* Machine::init() */
153	}
154
155	Machine::UserData::~UserData()
156	{
157	}
158
159	/////////////////////////////////////////////////////////////////////////////
160	// Machine::HWData structure
161	/////////////////////////////////////////////////////////////////////////////
162
163	Machine::HWData::HWData()
164	{
165	/* default values for a newly created machine */
166	mMemorySize = 128;
167	mMemoryBalloonSize = 0;
168	mStatisticsUpdateInterval = 0;
169	mVRAMSize = 8;
170	mMonitorCount = 1;
171	mHWVirtExEnabled = TriStateBool_False;
172
173	/* default boot order: floppy - DVD - HDD */
174	mBootOrder [0] = DeviceType_FloppyDevice;
175	mBootOrder [1] = DeviceType_DVDDevice;
176	mBootOrder [2] = DeviceType_HardDiskDevice;
177	for (size_t i = 3; i < ELEMENTS (mBootOrder); i++)
178	mBootOrder [i] = DeviceType_NoDevice;
179
180	mClipboardMode = ClipboardMode_ClipBidirectional;
181	}
182
183	Machine::HWData::~HWData()
184	{
185	}
186
187	bool Machine::HWData::operator== (const HWData &that) const
188	{
189	if (this == &that)
190	return true;
191
192	if (mMemorySize != that.mMemorySize \|\|
193	mMemoryBalloonSize != that.mMemoryBalloonSize \|\|
194	mStatisticsUpdateInterval != that.mStatisticsUpdateInterval \|\|
195	mVRAMSize != that.mVRAMSize \|\|
196	mMonitorCount != that.mMonitorCount \|\|
197	mHWVirtExEnabled != that.mHWVirtExEnabled \|\|
198	mClipboardMode != that.mClipboardMode)
199	return false;
200
201	for (size_t i = 0; i < ELEMENTS (mBootOrder); ++ i)
202	if (mBootOrder [i] != that.mBootOrder [i])
203	return false;
204
205	if (mSharedFolders.size() != that.mSharedFolders.size())
206	return false;
207
208	if (mSharedFolders.size() == 0)
209	return true;
210
211	/* Make copies to speed up comparison */
212	SharedFolderList folders = mSharedFolders;
213	SharedFolderList thatFolders = that.mSharedFolders;
214
215	SharedFolderList::iterator it = folders.begin();
216	while (it != folders.end())
217	{
218	bool found = false;
219	SharedFolderList::iterator thatIt = thatFolders.begin();
220	while (thatIt != thatFolders.end())
221	{
222	if ((it)->name() == (thatIt)->name() &&
223	RTPathCompare (Utf8Str ((*it)->hostPath()),
224	Utf8Str ((*thatIt)->hostPath())) == 0)
225	{
226	thatFolders.erase (thatIt);
227	found = true;
228	break;
229	}
230	else
231	++ thatIt;
232	}
233	if (found)
234	it = folders.erase (it);
235	else
236	return false;
237	}
238
239	Assert (folders.size() == 0 && thatFolders.size() == 0);
240
241	return true;
242	}
243
244	/////////////////////////////////////////////////////////////////////////////
245	// Machine::HDData structure
246	/////////////////////////////////////////////////////////////////////////////
247
248	Machine::HDData::HDData()
249	{
250	/* default values for a newly created machine */
251	mHDAttachmentsChanged = false;
252	}
253
254	Machine::HDData::~HDData()
255	{
256	}
257
258	bool Machine::HDData::operator== (const HDData &that) const
259	{
260	if (this == &that)
261	return true;
262
263	if (mHDAttachments.size() != that.mHDAttachments.size())
264	return false;
265
266	if (mHDAttachments.size() == 0)
267	return true;
268
269	/* Make copies to speed up comparison */
270	HDAttachmentList atts = mHDAttachments;
271	HDAttachmentList thatAtts = that.mHDAttachments;
272
273	HDAttachmentList::iterator it = atts.begin();
274	while (it != atts.end())
275	{
276	bool found = false;
277	HDAttachmentList::iterator thatIt = thatAtts.begin();
278	while (thatIt != thatAtts.end())
279	{
280	if ((it)->deviceNumber() == (thatIt)->deviceNumber() &&
281	(it)->controller() == (thatIt)->controller() &&
282	(it)->hardDisk().equalsTo ((thatIt)->hardDisk()))
283	{
284	thatAtts.erase (thatIt);
285	found = true;
286	break;
287	}
288	else
289	++ thatIt;
290	}
291	if (found)
292	it = atts.erase (it);
293	else
294	return false;
295	}
296
297	Assert (atts.size() == 0 && thatAtts.size() == 0);
298
299	return true;
300	}
301
302	/////////////////////////////////////////////////////////////////////////////
303	// Machine class
304	/////////////////////////////////////////////////////////////////////////////
305
306	// constructor / destructor
307	/////////////////////////////////////////////////////////////////////////////
308
309	Machine::Machine() : mType (IsMachine) {}
310
311	Machine::~Machine() {}
312
313	HRESULT Machine::FinalConstruct()
314	{
315	LogFlowThisFunc (("\n"));
316	return S_OK;
317	}
318
319	void Machine::FinalRelease()
320	{
321	LogFlowThisFunc (("\n"));
322	uninit();
323	}
324
325	/**
326	* Initializes the instance.
327	*
328	* @param aParent Associated parent object
329	* @param aConfigFile Local file system path to the VM settings file (can
330	* be relative to the VirtualBox config directory).
331	* @param aMode Init_New, Init_Existing or Init_Registered
332	* @param aName name for the machine when aMode is Init_New
333	* (ignored otherwise)
334	* @param aNameSync \|TRUE\| to automatically sync settings dir and file
335	* name with the machine name. \|FALSE\| is used for legacy
336	* machines where the file name is specified by the
337	* user and should never change. Used only in Init_New
338	* mode (ignored otherwise).
339	* @param aId UUID of the machine. Required for aMode==Init_Registered
340	* and optional for aMode==Init_New. Used for consistency
341	* check when aMode is Init_Registered; must match UUID
342	* stored in the settings file. Used for predefining the
343	* UUID of a VM when aMode is Init_New.
344	*
345	* @return Success indicator. if not S_OK, the machine object is invalid
346	*/
347	HRESULT Machine::init (VirtualBox *aParent, const BSTR aConfigFile,
348	InitMode aMode, const BSTR aName /* = NULL */,
349	BOOL aNameSync /* = TRUE */,
350	const Guid aId / = NULL */)
351	{
352	LogFlowThisFuncEnter();
353	LogFlowThisFunc (("aConfigFile='%ls', aMode=%d\n", aConfigFile, aMode));
354
355	AssertReturn (aParent, E_INVALIDARG);
356	AssertReturn (aConfigFile, E_INVALIDARG);
357	AssertReturn (aMode != Init_New \|\| (aName != NULL && *aName != '\0'),
358	E_INVALIDARG);
359	AssertReturn (aMode != Init_Registered \|\| aId != NULL, E_FAIL);
360
361	/* Enclose the state transition NotReady->InInit->Ready */
362	AutoInitSpan autoInitSpan (this);
363	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
364
365	HRESULT rc = S_OK;
366
367	/* share the parent weakly */
368	unconst (mParent) = aParent;
369
370	/* register with parent early, since uninit() will unconditionally
371	* unregister on failure */
372	mParent->addDependentChild (this);
373
374	/* allocate the essential machine data structure (the rest will be
375	* allocated later by initDataAndChildObjects() */
376	mData.allocate();
377
378	char configFileFull [RTPATH_MAX] = {0};
379
380	/* memorize the config file name (as provided) */
381	mData->mConfigFile = aConfigFile;
382
383	/* get the full file name */
384	int vrc = RTPathAbsEx (mParent->homeDir(), Utf8Str (aConfigFile),
385	configFileFull, sizeof (configFileFull));
386	if (VBOX_FAILURE (vrc))
387	return setError (E_FAIL,
388	tr ("Invalid settings file name: '%ls' (%Vrc)"),
389	aConfigFile, vrc);
390	mData->mConfigFileFull = configFileFull;
391
392	/* start with accessible */
393	mData->mAccessible = TRUE;
394
395	if (aMode != Init_New)
396	{
397	/* lock the settings file */
398	rc = lockConfig();
399
400	if (aMode == Init_Registered && FAILED (rc))
401	{
402	/* If the machine is registered, then, instead of returning a
403	* failure, we mark it as inaccessible and set the result to
404	* success to give it a try later */
405	mData->mAccessible = FALSE;
406	/* fetch the current error info */
407	mData->mAccessError = com::ErrorInfo();
408	LogWarning (("Machine {%Vuuid} is inaccessible! [%ls]\n",
409	mData->mUuid.raw(),
410	mData->mAccessError.getText().raw()));
411	rc = S_OK;
412	}
413	}
414	else
415	{
416	/* check for the file existence */
417	RTFILE f = NIL_RTFILE;
418	int vrc = RTFileOpen (&f, configFileFull, RTFILE_O_READ);
419	if (VBOX_SUCCESS (vrc) \|\| vrc == VERR_SHARING_VIOLATION)
420	{
421	rc = setError (E_FAIL,
422	tr ("Settings file '%s' already exists"), configFileFull);
423	if (VBOX_SUCCESS (vrc))
424	RTFileClose (f);
425	}
426	else
427	{
428	if (vrc != VERR_FILE_NOT_FOUND && vrc != VERR_PATH_NOT_FOUND)
429	rc = setError (E_FAIL,
430	tr ("Invalid settings file name: '%ls' (%Vrc)"),
431	mData->mConfigFileFull.raw(), vrc);
432	}
433
434	/* reset mAccessible to make sure uninit() called by the AutoInitSpan
435	* destructor will not call uninitDataAndChildObjects() (we haven't
436	* initialized anything yet) */
437	if (FAILED (rc))
438	mData->mAccessible = FALSE;
439	}
440
441	CheckComRCReturnRC (rc);
442
443	if (aMode == Init_Registered)
444	{
445	/* store the supplied UUID (will be used to check for UUID consistency
446	* in loadSettings() */
447	unconst (mData->mUuid) = *aId;
448	/* try to load settings only if the settings file is accessible */
449	if (mData->mAccessible)
450	rc = registeredInit();
451	}
452	else
453	{
454	rc = initDataAndChildObjects();
455
456	if (SUCCEEDED (rc))
457	{
458	if (aMode != Init_New)
459	{
460	rc = loadSettings (false /* aRegistered */);
461	}
462	else
463	{
464	/* create the machine UUID */
465	if (aId)
466	unconst (mData->mUuid) = *aId;
467	else
468	unconst (mData->mUuid).create();
469
470	/* memorize the provided new machine's name */
471	mUserData->mName = aName;
472	mUserData->mNameSync = aNameSync;
473
474	/* initialize the default snapshots folder
475	* (note: depends on the name value set above!) */
476	rc = COMSETTER(SnapshotFolder) (NULL);
477	AssertComRC (rc);
478	}
479
480	/* commit all changes made during the initialization */
481	if (SUCCEEDED (rc))
482	commit();
483	}
484	}
485
486	/* Confirm a successful initialization when it's the case */
487	if (SUCCEEDED (rc))
488	{
489	if (mData->mAccessible)
490	autoInitSpan.setSucceeded();
491	else
492	autoInitSpan.setLimited();
493	}
494
495	LogFlowThisFunc (("mName='%ls', mRegistered=%RTbool, mAccessible=%RTbool "
496	"rc=%08X\n",
497	!!mUserData ? mUserData->mName.raw() : NULL,
498	mData->mRegistered, mData->mAccessible, rc));
499
500	LogFlowThisFuncLeave();
501
502	return rc;
503	}
504
505	/**
506	* Initializes the registered machine by loading the settings file.
507	* This method is separated from #init() in order to make it possible to
508	* retry the operation after VirtualBox startup instead of refusing to
509	* startup the whole VirtualBox server in case if the settings file of some
510	* registered VM is invalid or inaccessible.
511	*
512	* @note Must be always called from this object's write lock
513	* (unless called from #init() that doesn't need any locking).
514	* @note Locks the mUSBController method for writing.
515	* @note Subclasses must not call this method.
516	*/
517	HRESULT Machine::registeredInit()
518	{
519	AssertReturn (mType == IsMachine, E_FAIL);
520	AssertReturn (!mData->mUuid.isEmpty(), E_FAIL);
521
522	HRESULT rc = initDataAndChildObjects();
523	CheckComRCReturnRC (rc);
524
525	if (!mData->mAccessible)
526	rc = lockConfig();
527
528	/* Temporarily reset the registered flag in order to let setters potentially
529	* called from loadSettings() succeed (isMutable() used in all setters
530	* will return FALSE for a Machine instance if mRegistered is TRUE). */
531	mData->mRegistered = FALSE;
532
533	if (SUCCEEDED (rc))
534	{
535	rc = loadSettings (true /* aRegistered */);
536
537	if (FAILED (rc))
538	unlockConfig();
539	}
540
541	if (SUCCEEDED (rc))
542	{
543	mData->mAccessible = TRUE;
544
545	/* commit all changes made during loading the settings file */
546	commit();
547
548	/* VirtualBox will not call trySetRegistered(), so
549	* inform the USB proxy about all attached USB filters */
550	mUSBController->onMachineRegistered (TRUE);
551	}
552	else
553	{
554	/* If the machine is registered, then, instead of returning a
555	* failure, we mark it as inaccessible and set the result to
556	* success to give it a try later */
557	mData->mAccessible = FALSE;
558	/* fetch the current error info */
559	mData->mAccessError = com::ErrorInfo();
560	LogWarning (("Machine {%Vuuid} is inaccessible! [%ls]\n",
561	mData->mUuid.raw(),
562	mData->mAccessError.getText().raw()));
563
564	/* rollback all changes */
565	rollback (false /* aNotify */);
566
567	/* uninitialize the common part to make sure all data is reset to
568	* default (null) values */
569	uninitDataAndChildObjects();
570
571	rc = S_OK;
572	}
573
574	/* Restore the registered flag (even on failure) */
575	mData->mRegistered = TRUE;
576
577	return rc;
578	}
579
580	/**
581	* Uninitializes the instance.
582	* Called either from FinalRelease() or by the parent when it gets destroyed.
583	*
584	* @note The caller of this method must make sure that this object
585	* a) doesn't have active callers on the current thread and b) is not locked
586	* by the current thread; otherwise uninit() will hang either a) due to
587	* AutoUninitSpan waiting for a number of calls to drop to zero or b) due to
588	* a dead-lock caused by this thread waiting for all callers on the other
589	* threads are are done but preventing them from doing so by holding a lock.
590	*/
591	void Machine::uninit()
592	{
593	LogFlowThisFuncEnter();
594
595	Assert (!isLockedOnCurrentThread());
596
597	/* Enclose the state transition Ready->InUninit->NotReady */
598	AutoUninitSpan autoUninitSpan (this);
599	if (autoUninitSpan.uninitDone())
600	return;
601
602	Assert (mType == IsMachine);
603	Assert (!!mData);
604
605	LogFlowThisFunc (("initFailed()=%d\n", autoUninitSpan.initFailed()));
606	LogFlowThisFunc (("mRegistered=%d\n", mData->mRegistered));
607
608	/*
609	* Enter this object's lock because there may be a SessionMachine instance
610	* somewhere around, that shares our data and lock but doesn't use our
611	* addCaller()/removeCaller(), and it may be also accessing the same
612	* data members. mParent lock is necessary as well because of
613	* SessionMachine::uninit(), etc.
614	*/
615	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
616
617	if (!mData->mSession.mMachine.isNull())
618	{
619	/*
620	* Theoretically, this can only happen if the VirtualBox server has
621	* been terminated while there were clients running that owned open
622	* direct sessions. Since in this case we are definitely called by
623	* VirtualBox::uninit(), we may be sure that SessionMachine::uninit()
624	* won't happen on the client watcher thread (because it does
625	* VirtualBox::addCaller() for the duration of the
626	* SessionMachine::checkForDeath() call, so that VirtualBox::uninit()
627	* cannot happen until the VirtualBox caller is released). This is
628	* important, because SessionMachine::uninit() cannot correctly operate
629	* after we return from this method (it expects the Machine instance
630	* is still valid). We'll call it ourselves below.
631	*/
632	LogWarningThisFunc (("Session machine is not NULL (%p), "
633	"the direct session is still open!\n",
634	(SessionMachine *) mData->mSession.mMachine));
635
636	if (mData->mMachineState >= MachineState_Running)
637	{
638	LogWarningThisFunc (("Setting state to Aborted!\n"));
639	/* set machine state using SessionMachine reimplementation */
640	static_cast <Machine *> (mData->mSession.mMachine)
641	->setMachineState (MachineState_Aborted);
642	}
643
644	/*
645	* Uninitialize SessionMachine using public uninit() to indicate
646	* an unexpected uninitialization.
647	*/
648	mData->mSession.mMachine->uninit();
649	/* SessionMachine::uninit() must set mSession.mMachine to null */
650	Assert (mData->mSession.mMachine.isNull());
651	}
652
653	/* the lock is no more necessary (SessionMachine is uninitialized) */
654	alock.leave();
655
656	/* make sure the configuration is unlocked */
657	unlockConfig();
658
659	if (isModified())
660	{
661	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
662	rollback (false /* aNotify */);
663	}
664
665	if (mData->mAccessible)
666	uninitDataAndChildObjects();
667
668	/* free the essential data structure last */
669	mData.free();
670
671	mParent->removeDependentChild (this);
672
673	LogFlowThisFuncLeave();
674	}
675
676	// IMachine properties
677	/////////////////////////////////////////////////////////////////////////////
678
679	STDMETHODIMP Machine::COMGETTER(Parent) (IVirtualBox **aParent)
680	{
681	if (!aParent)
682	return E_POINTER;
683
684	AutoLimitedCaller autoCaller (this);
685	CheckComRCReturnRC (autoCaller.rc());
686
687	/* mParent is constant during life time, no need to lock */
688	mParent.queryInterfaceTo (aParent);
689
690	return S_OK;
691	}
692
693	STDMETHODIMP Machine::COMGETTER(Accessible) (BOOL *aAccessible)
694	{
695	if (!aAccessible)
696	return E_POINTER;
697
698	AutoLimitedCaller autoCaller (this);
699	CheckComRCReturnRC (autoCaller.rc());
700
701	AutoLock alock (this);
702
703	HRESULT rc = S_OK;
704
705	if (!mData->mAccessible)
706	{
707	/* try to initialize the VM once more if not accessible */
708
709	AutoReadySpan autoReadySpan (this);
710	AssertReturn (autoReadySpan.isOk(), E_FAIL);
711
712	rc = registeredInit();
713
714	if (mData->mAccessible)
715	autoReadySpan.setSucceeded();
716	}
717
718	if (SUCCEEDED (rc))
719	*aAccessible = mData->mAccessible;
720
721	return rc;
722	}
723
724	STDMETHODIMP Machine::COMGETTER(AccessError) (IVirtualBoxErrorInfo **aAccessError)
725	{
726	if (!aAccessError)
727	return E_POINTER;
728
729	AutoLimitedCaller autoCaller (this);
730	CheckComRCReturnRC (autoCaller.rc());
731
732	AutoReaderLock alock (this);
733
734	if (mData->mAccessible \|\| !mData->mAccessError.isBasicAvailable())
735	{
736	/* return shortly */
737	aAccessError = NULL;
738	return S_OK;
739	}
740
741	HRESULT rc = S_OK;
742
743	ComObjPtr <VirtualBoxErrorInfo> errorInfo;
744	rc = errorInfo.createObject();
745	if (SUCCEEDED (rc))
746	{
747	errorInfo->init (mData->mAccessError.getResultCode(),
748	mData->mAccessError.getInterfaceID(),
749	mData->mAccessError.getComponent(),
750	mData->mAccessError.getText());
751	rc = errorInfo.queryInterfaceTo (aAccessError);
752	}
753
754	return rc;
755	}
756
757	STDMETHODIMP Machine::COMGETTER(Name) (BSTR *aName)
758	{
759	if (!aName)
760	return E_POINTER;
761
762	AutoCaller autoCaller (this);
763	CheckComRCReturnRC (autoCaller.rc());
764
765	AutoReaderLock alock (this);
766
767	mUserData->mName.cloneTo (aName);
768
769	return S_OK;
770	}
771
772	STDMETHODIMP Machine::COMSETTER(Name) (INPTR BSTR aName)
773	{
774	if (!aName)
775	return E_INVALIDARG;
776
777	if (!*aName)
778	return setError (E_INVALIDARG,
779	tr ("Machine name cannot be empty"));
780
781	AutoCaller autoCaller (this);
782	CheckComRCReturnRC (autoCaller.rc());
783
784	AutoLock alock (this);
785
786	HRESULT rc = checkStateDependency (MutableStateDep);
787	CheckComRCReturnRC (rc);
788
789	mUserData.backup();
790	mUserData->mName = aName;
791
792	return S_OK;
793	}
794
795	STDMETHODIMP Machine::COMGETTER(Description) (BSTR *aDescription)
796	{
797	if (!aDescription)
798	return E_POINTER;
799
800	AutoCaller autoCaller (this);
801	CheckComRCReturnRC (autoCaller.rc());
802
803	AutoReaderLock alock (this);
804
805	mUserData->mDescription.cloneTo (aDescription);
806
807	return S_OK;
808	}
809
810	STDMETHODIMP Machine::COMSETTER(Description) (INPTR BSTR aDescription)
811	{
812	AutoCaller autoCaller (this);
813	CheckComRCReturnRC (autoCaller.rc());
814
815	AutoLock alock (this);
816
817	HRESULT rc = checkStateDependency (MutableStateDep);
818	CheckComRCReturnRC (rc);
819
820	mUserData.backup();
821	mUserData->mDescription = aDescription;
822
823	return S_OK;
824	}
825
826	STDMETHODIMP Machine::COMGETTER(Id) (GUIDPARAMOUT aId)
827	{
828	if (!aId)
829	return E_POINTER;
830
831	AutoLimitedCaller autoCaller (this);
832	CheckComRCReturnRC (autoCaller.rc());
833
834	AutoReaderLock alock (this);
835
836	mData->mUuid.cloneTo (aId);
837
838	return S_OK;
839	}
840
841	STDMETHODIMP Machine::COMGETTER(OSTypeId) (BSTR *aOSTypeId)
842	{
843	if (!aOSTypeId)
844	return E_POINTER;
845
846	AutoCaller autoCaller (this);
847	CheckComRCReturnRC (autoCaller.rc());
848
849	AutoReaderLock alock (this);
850
851	mUserData->mOSTypeId.cloneTo (aOSTypeId);
852
853	return S_OK;
854	}
855
856	STDMETHODIMP Machine::COMSETTER(OSTypeId) (INPTR BSTR aOSTypeId)
857	{
858	if (!aOSTypeId)
859	return E_INVALIDARG;
860
861	AutoCaller autoCaller (this);
862	CheckComRCReturnRC (autoCaller.rc());
863
864	/* look up the object by Id to check it is valid */
865	ComPtr <IGuestOSType> guestOSType;
866	HRESULT rc = mParent->GetGuestOSType (aOSTypeId,
867	guestOSType.asOutParam());
868	CheckComRCReturnRC (rc);
869
870	AutoLock alock (this);
871
872	rc = checkStateDependency (MutableStateDep);
873	CheckComRCReturnRC (rc);
874
875	mUserData.backup();
876	mUserData->mOSTypeId = aOSTypeId;
877
878	return S_OK;
879	}
880
881	STDMETHODIMP Machine::COMGETTER(MemorySize) (ULONG *memorySize)
882	{
883	if (!memorySize)
884	return E_POINTER;
885
886	AutoCaller autoCaller (this);
887	CheckComRCReturnRC (autoCaller.rc());
888
889	AutoReaderLock alock (this);
890
891	*memorySize = mHWData->mMemorySize;
892
893	return S_OK;
894	}
895
896	STDMETHODIMP Machine::COMSETTER(MemorySize) (ULONG memorySize)
897	{
898	/* check RAM limits */
899	if (memorySize < SchemaDefs::MinGuestRAM \|\|
900	memorySize > SchemaDefs::MaxGuestRAM)
901	return setError (E_INVALIDARG,
902	tr ("Invalid RAM size: %lu MB (must be in range [%lu, %lu] MB)"),
903	memorySize, SchemaDefs::MinGuestRAM, SchemaDefs::MaxGuestRAM);
904
905	AutoCaller autoCaller (this);
906	CheckComRCReturnRC (autoCaller.rc());
907
908	AutoLock alock (this);
909
910	HRESULT rc = checkStateDependency (MutableStateDep);
911	CheckComRCReturnRC (rc);
912
913	mHWData.backup();
914	mHWData->mMemorySize = memorySize;
915
916	return S_OK;
917	}
918
919	STDMETHODIMP Machine::COMGETTER(VRAMSize) (ULONG *memorySize)
920	{
921	if (!memorySize)
922	return E_POINTER;
923
924	AutoCaller autoCaller (this);
925	CheckComRCReturnRC (autoCaller.rc());
926
927	AutoReaderLock alock (this);
928
929	*memorySize = mHWData->mVRAMSize;
930
931	return S_OK;
932	}
933
934	STDMETHODIMP Machine::COMSETTER(VRAMSize) (ULONG memorySize)
935	{
936	/* check VRAM limits */
937	if (memorySize < SchemaDefs::MinGuestVRAM \|\|
938	memorySize > SchemaDefs::MaxGuestVRAM)
939	return setError (E_INVALIDARG,
940	tr ("Invalid VRAM size: %lu MB (must be in range [%lu, %lu] MB)"),
941	memorySize, SchemaDefs::MinGuestVRAM, SchemaDefs::MaxGuestVRAM);
942
943	AutoCaller autoCaller (this);
944	CheckComRCReturnRC (autoCaller.rc());
945
946	AutoLock alock (this);
947
948	HRESULT rc = checkStateDependency (MutableStateDep);
949	CheckComRCReturnRC (rc);
950
951	mHWData.backup();
952	mHWData->mVRAMSize = memorySize;
953
954	return S_OK;
955	}
956
957	/** @todo this method should not be public */
958	STDMETHODIMP Machine::COMGETTER(MemoryBalloonSize) (ULONG *memoryBalloonSize)
959	{
960	if (!memoryBalloonSize)
961	return E_POINTER;
962
963	AutoCaller autoCaller (this);
964	CheckComRCReturnRC (autoCaller.rc());
965
966	AutoReaderLock alock (this);
967
968	*memoryBalloonSize = mHWData->mMemoryBalloonSize;
969
970	return S_OK;
971	}
972
973	/** @todo this method should not be public */
974	STDMETHODIMP Machine::COMSETTER(MemoryBalloonSize) (ULONG memoryBalloonSize)
975	{
976	/* check limits */
977	if (memoryBalloonSize >= VMMDEV_MAX_MEMORY_BALLOON(mHWData->mMemorySize))
978	return setError (E_INVALIDARG,
979	tr ("Invalid memory balloon size: %lu MB (must be in range [%lu, %lu] MB)"),
980	memoryBalloonSize, 0, VMMDEV_MAX_MEMORY_BALLOON(mHWData->mMemorySize));
981
982	AutoCaller autoCaller (this);
983	CheckComRCReturnRC (autoCaller.rc());
984
985	AutoLock alock (this);
986
987	HRESULT rc = checkStateDependency (MutableStateDep);
988	CheckComRCReturnRC (rc);
989
990	mHWData.backup();
991	mHWData->mMemoryBalloonSize = memoryBalloonSize;
992
993	return S_OK;
994	}
995
996	/** @todo this method should not be public */
997	STDMETHODIMP Machine::COMGETTER(StatisticsUpdateInterval) (ULONG *statisticsUpdateInterval)
998	{
999	if (!statisticsUpdateInterval)
1000	return E_POINTER;
1001
1002	AutoCaller autoCaller (this);
1003	CheckComRCReturnRC (autoCaller.rc());
1004
1005	AutoReaderLock alock (this);
1006
1007	*statisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
1008
1009	return S_OK;
1010	}
1011
1012	/** @todo this method should not be public */
1013	STDMETHODIMP Machine::COMSETTER(StatisticsUpdateInterval) (ULONG statisticsUpdateInterval)
1014	{
1015	AutoCaller autoCaller (this);
1016	CheckComRCReturnRC (autoCaller.rc());
1017
1018	AutoLock alock (this);
1019
1020	HRESULT rc = checkStateDependency (MutableStateDep);
1021	CheckComRCReturnRC (rc);
1022
1023	mHWData.backup();
1024	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
1025
1026	return S_OK;
1027	}
1028
1029
1030	STDMETHODIMP Machine::COMGETTER(MonitorCount) (ULONG *monitorCount)
1031	{
1032	if (!monitorCount)
1033	return E_POINTER;
1034
1035	AutoCaller autoCaller (this);
1036	CheckComRCReturnRC (autoCaller.rc());
1037
1038	AutoReaderLock alock (this);
1039
1040	*monitorCount = mHWData->mMonitorCount;
1041
1042	return S_OK;
1043	}
1044
1045	STDMETHODIMP Machine::COMSETTER(MonitorCount) (ULONG monitorCount)
1046	{
1047	/* make sure monitor count is a sensible number */
1048	if (monitorCount < 1 \|\| monitorCount > SchemaDefs::MaxGuestMonitors)
1049	return setError (E_INVALIDARG,
1050	tr ("Invalid monitor count: %lu (must be in range [%lu, %lu])"),
1051	monitorCount, 1, SchemaDefs::MaxGuestMonitors);
1052
1053	AutoCaller autoCaller (this);
1054	CheckComRCReturnRC (autoCaller.rc());
1055
1056	AutoLock alock (this);
1057
1058	HRESULT rc = checkStateDependency (MutableStateDep);
1059	CheckComRCReturnRC (rc);
1060
1061	mHWData.backup();
1062	mHWData->mMonitorCount = monitorCount;
1063
1064	return S_OK;
1065	}
1066
1067	STDMETHODIMP Machine::COMGETTER(BIOSSettings)(IBIOSSettings **biosSettings)
1068	{
1069	if (!biosSettings)
1070	return E_POINTER;
1071
1072	AutoCaller autoCaller (this);
1073	CheckComRCReturnRC (autoCaller.rc());
1074
1075	/* mBIOSSettings is constant during life time, no need to lock */
1076	mBIOSSettings.queryInterfaceTo (biosSettings);
1077
1078	return S_OK;
1079	}
1080
1081	STDMETHODIMP Machine::COMGETTER(HWVirtExEnabled)(TriStateBool_T *enabled)
1082	{
1083	if (!enabled)
1084	return E_POINTER;
1085
1086	AutoCaller autoCaller (this);
1087	CheckComRCReturnRC (autoCaller.rc());
1088
1089	AutoReaderLock alock (this);
1090
1091	*enabled = mHWData->mHWVirtExEnabled;
1092
1093	return S_OK;
1094	}
1095
1096	STDMETHODIMP Machine::COMSETTER(HWVirtExEnabled)(TriStateBool_T enable)
1097	{
1098	AutoCaller autoCaller (this);
1099	CheckComRCReturnRC (autoCaller.rc());
1100
1101	AutoLock alock (this);
1102
1103	HRESULT rc = checkStateDependency (MutableStateDep);
1104	CheckComRCReturnRC (rc);
1105
1106	/** @todo check validity! */
1107
1108	mHWData.backup();
1109	mHWData->mHWVirtExEnabled = enable;
1110
1111	return S_OK;
1112	}
1113
1114	STDMETHODIMP Machine::COMGETTER(SnapshotFolder) (BSTR *aSnapshotFolder)
1115	{
1116	if (!aSnapshotFolder)
1117	return E_POINTER;
1118
1119	AutoCaller autoCaller (this);
1120	CheckComRCReturnRC (autoCaller.rc());
1121
1122	AutoReaderLock alock (this);
1123
1124	mUserData->mSnapshotFolderFull.cloneTo (aSnapshotFolder);
1125
1126	return S_OK;
1127	}
1128
1129	STDMETHODIMP Machine::COMSETTER(SnapshotFolder) (INPTR BSTR aSnapshotFolder)
1130	{
1131	/* @todo (r=dmik):
1132	* 1. Allow to change the name of the snapshot folder containing snapshots
1133	* 2. Rename the folder on disk instead of just changing the property
1134	* value (to be smart and not to leave garbage). Note that it cannot be
1135	* done here because the change may be rolled back. Thus, the right
1136	* place is #saveSettings().
1137	*/
1138
1139	AutoCaller autoCaller (this);
1140	CheckComRCReturnRC (autoCaller.rc());
1141
1142	AutoLock alock (this);
1143
1144	HRESULT rc = checkStateDependency (MutableStateDep);
1145	CheckComRCReturnRC (rc);
1146
1147	if (!mData->mCurrentSnapshot.isNull())
1148	return setError (E_FAIL,
1149	tr ("The snapshot folder of a machine with snapshots cannot "
1150	"be changed (please discard all snapshots first)"));
1151
1152	Utf8Str snapshotFolder = aSnapshotFolder;
1153
1154	if (snapshotFolder.isEmpty())
1155	{
1156	if (isInOwnDir())
1157	{
1158	/* the default snapshots folder is 'Snapshots' in the machine dir */
1159	snapshotFolder = Utf8Str ("Snapshots");
1160	}
1161	else
1162	{
1163	/* the default snapshots folder is {UUID}, for backwards
1164	* compatibility and to resolve conflicts */
1165	snapshotFolder = Utf8StrFmt ("{%Vuuid}", mData->mUuid.raw());
1166	}
1167	}
1168
1169	int vrc = calculateFullPath (snapshotFolder, snapshotFolder);
1170	if (VBOX_FAILURE (vrc))
1171	return setError (E_FAIL,
1172	tr ("Invalid snapshot folder: '%ls' (%Vrc)"),
1173	aSnapshotFolder, vrc);
1174
1175	mUserData.backup();
1176	mUserData->mSnapshotFolder = aSnapshotFolder;
1177	mUserData->mSnapshotFolderFull = snapshotFolder;
1178
1179	return S_OK;
1180	}
1181
1182	STDMETHODIMP Machine::COMGETTER(HardDiskAttachments) (IHardDiskAttachmentCollection **attachments)
1183	{
1184	if (!attachments)
1185	return E_POINTER;
1186
1187	AutoCaller autoCaller (this);
1188	CheckComRCReturnRC (autoCaller.rc());
1189
1190	AutoReaderLock alock (this);
1191
1192	ComObjPtr <HardDiskAttachmentCollection> collection;
1193	collection.createObject();
1194	collection->init (mHDData->mHDAttachments);
1195	collection.queryInterfaceTo (attachments);
1196
1197	return S_OK;
1198	}
1199
1200	STDMETHODIMP Machine::COMGETTER(VRDPServer)(IVRDPServer **vrdpServer)
1201	{
1202	#ifdef VBOX_VRDP
1203	if (!vrdpServer)
1204	return E_POINTER;
1205
1206	AutoCaller autoCaller (this);
1207	CheckComRCReturnRC (autoCaller.rc());
1208
1209	AutoReaderLock alock (this);
1210
1211	Assert (!!mVRDPServer);
1212	mVRDPServer.queryInterfaceTo (vrdpServer);
1213
1214	return S_OK;
1215	#else
1216	return E_NOTIMPL;
1217	#endif
1218	}
1219
1220	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1221	{
1222	if (!dvdDrive)
1223	return E_POINTER;
1224
1225	AutoCaller autoCaller (this);
1226	CheckComRCReturnRC (autoCaller.rc());
1227
1228	AutoReaderLock alock (this);
1229
1230	Assert (!!mDVDDrive);
1231	mDVDDrive.queryInterfaceTo (dvdDrive);
1232	return S_OK;
1233	}
1234
1235	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1236	{
1237	if (!floppyDrive)
1238	return E_POINTER;
1239
1240	AutoCaller autoCaller (this);
1241	CheckComRCReturnRC (autoCaller.rc());
1242
1243	AutoReaderLock alock (this);
1244
1245	Assert (!!mFloppyDrive);
1246	mFloppyDrive.queryInterfaceTo (floppyDrive);
1247	return S_OK;
1248	}
1249
1250	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1251	{
1252	if (!audioAdapter)
1253	return E_POINTER;
1254
1255	AutoCaller autoCaller (this);
1256	CheckComRCReturnRC (autoCaller.rc());
1257
1258	AutoReaderLock alock (this);
1259
1260	mAudioAdapter.queryInterfaceTo (audioAdapter);
1261	return S_OK;
1262	}
1263
1264	STDMETHODIMP Machine::COMGETTER(USBController)(IUSBController * *a_ppUSBController)
1265	{
1266	#ifdef VBOX_WITH_USB
1267	if (!a_ppUSBController)
1268	return E_POINTER;
1269
1270	AutoCaller autoCaller (this);
1271	CheckComRCReturnRC (autoCaller.rc());
1272
1273	HRESULT rc = mParent->host()->checkUSBProxyService();
1274	CheckComRCReturnRC (rc);
1275
1276	AutoReaderLock alock (this);
1277
1278	mUSBController.queryInterfaceTo (a_ppUSBController);
1279	return S_OK;
1280	#else
1281	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1282	* extended error info to indicate that USB is simply not available
1283	* (w/o treting it as a failure), for example, as in OSE */
1284	return E_NOTIMPL;
1285	#endif
1286	}
1287
1288	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *filePath)
1289	{
1290	if (!filePath)
1291	return E_POINTER;
1292
1293	AutoLimitedCaller autoCaller (this);
1294	CheckComRCReturnRC (autoCaller.rc());
1295
1296	AutoReaderLock alock (this);
1297
1298	mData->mConfigFileFull.cloneTo (filePath);
1299	return S_OK;
1300	}
1301
1302	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *modified)
1303	{
1304	if (!modified)
1305	return E_POINTER;
1306
1307	AutoCaller autoCaller (this);
1308	CheckComRCReturnRC (autoCaller.rc());
1309
1310	AutoLock alock (this);
1311
1312	HRESULT rc = checkStateDependency (MutableStateDep);
1313	CheckComRCReturnRC (rc);
1314
1315	if (!isConfigLocked())
1316	{
1317	/*
1318	* if we're ready and isConfigLocked() is FALSE then it means
1319	* that no config file exists yet, so always return TRUE
1320	*/
1321	*modified = TRUE;
1322	}
1323	else
1324	{
1325	*modified = isModified();
1326	}
1327
1328	return S_OK;
1329	}
1330
1331	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1332	{
1333	if (!aSessionState)
1334	return E_POINTER;
1335
1336	AutoCaller autoCaller (this);
1337	CheckComRCReturnRC (autoCaller.rc());
1338
1339	AutoReaderLock alock (this);
1340
1341	*aSessionState = mData->mSession.mState;
1342
1343	return S_OK;
1344	}
1345
1346	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1347	{
1348	if (!aSessionType)
1349	return E_POINTER;
1350
1351	AutoCaller autoCaller (this);
1352	CheckComRCReturnRC (autoCaller.rc());
1353
1354	AutoReaderLock alock (this);
1355
1356	mData->mSession.mType.cloneTo (aSessionType);
1357
1358	return S_OK;
1359	}
1360
1361	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1362	{
1363	if (!aSessionPid)
1364	return E_POINTER;
1365
1366	AutoCaller autoCaller (this);
1367	CheckComRCReturnRC (autoCaller.rc());
1368
1369	AutoReaderLock alock (this);
1370
1371	*aSessionPid = mData->mSession.mPid;
1372
1373	return S_OK;
1374	}
1375
1376	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1377	{
1378	if (!machineState)
1379	return E_POINTER;
1380
1381	AutoCaller autoCaller (this);
1382	CheckComRCReturnRC (autoCaller.rc());
1383
1384	AutoReaderLock alock (this);
1385
1386	*machineState = mData->mMachineState;
1387
1388	return S_OK;
1389	}
1390
1391	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1392	{
1393	if (!aLastStateChange)
1394	return E_POINTER;
1395
1396	AutoCaller autoCaller (this);
1397	CheckComRCReturnRC (autoCaller.rc());
1398
1399	AutoReaderLock alock (this);
1400
1401	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1402
1403	return S_OK;
1404	}
1405
1406	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1407	{
1408	if (!aStateFilePath)
1409	return E_POINTER;
1410
1411	AutoCaller autoCaller (this);
1412	CheckComRCReturnRC (autoCaller.rc());
1413
1414	AutoReaderLock alock (this);
1415
1416	mSSData->mStateFilePath.cloneTo (aStateFilePath);
1417
1418	return S_OK;
1419	}
1420
1421	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1422	{
1423	if (!aLogFolder)
1424	return E_POINTER;
1425
1426	AutoCaller autoCaller (this);
1427	AssertComRCReturnRC (autoCaller.rc());
1428
1429	AutoReaderLock alock (this);
1430
1431	Utf8Str logFolder;
1432	getLogFolder (logFolder);
1433
1434	Bstr (logFolder).cloneTo (aLogFolder);
1435
1436	return S_OK;
1437	}
1438
1439	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1440	{
1441	if (!aCurrentSnapshot)
1442	return E_POINTER;
1443
1444	AutoCaller autoCaller (this);
1445	CheckComRCReturnRC (autoCaller.rc());
1446
1447	AutoReaderLock alock (this);
1448
1449	mData->mCurrentSnapshot.queryInterfaceTo (aCurrentSnapshot);
1450
1451	return S_OK;
1452	}
1453
1454	STDMETHODIMP Machine::COMGETTER(SnapshotCount) (ULONG *aSnapshotCount)
1455	{
1456	if (!aSnapshotCount)
1457	return E_POINTER;
1458
1459	AutoCaller autoCaller (this);
1460	CheckComRCReturnRC (autoCaller.rc());
1461
1462	AutoReaderLock alock (this);
1463
1464	*aSnapshotCount = !mData->mFirstSnapshot ? 0 :
1465	mData->mFirstSnapshot->descendantCount() + 1 /* self */;
1466
1467	return S_OK;
1468	}
1469
1470	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1471	{
1472	if (!aCurrentStateModified)
1473	return E_POINTER;
1474
1475	AutoCaller autoCaller (this);
1476	CheckComRCReturnRC (autoCaller.rc());
1477
1478	AutoReaderLock alock (this);
1479
1480	/*
1481	* Note: for machines with no snapshots, we always return FALSE
1482	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1483	* reasons :)
1484	*/
1485
1486	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1487	mData->mCurrentStateModified;
1488
1489	return S_OK;
1490	}
1491
1492	STDMETHODIMP
1493	Machine::COMGETTER(SharedFolders) (ISharedFolderCollection **aSharedFolders)
1494	{
1495	if (!aSharedFolders)
1496	return E_POINTER;
1497
1498	AutoCaller autoCaller (this);
1499	CheckComRCReturnRC (autoCaller.rc());
1500
1501	AutoReaderLock alock (this);
1502
1503	ComObjPtr <SharedFolderCollection> coll;
1504	coll.createObject();
1505	coll->init (mHWData->mSharedFolders);
1506	coll.queryInterfaceTo (aSharedFolders);
1507
1508	return S_OK;
1509	}
1510
1511	STDMETHODIMP
1512	Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1513	{
1514	if (!aClipboardMode)
1515	return E_POINTER;
1516
1517	AutoCaller autoCaller (this);
1518	CheckComRCReturnRC (autoCaller.rc());
1519
1520	AutoReaderLock alock (this);
1521
1522	*aClipboardMode = mHWData->mClipboardMode;
1523
1524	return S_OK;
1525	}
1526
1527	STDMETHODIMP
1528	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
1529	{
1530	AutoCaller autoCaller (this);
1531	CheckComRCReturnRC (autoCaller.rc());
1532
1533	AutoLock alock (this);
1534
1535	HRESULT rc = checkStateDependency (MutableStateDep);
1536	CheckComRCReturnRC (rc);
1537
1538	mHWData.backup();
1539	mHWData->mClipboardMode = aClipboardMode;
1540
1541	return S_OK;
1542	}
1543
1544	// IMachine methods
1545	/////////////////////////////////////////////////////////////////////////////
1546
1547	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
1548	{
1549	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1550	return setError (E_INVALIDARG,
1551	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1552	aPosition, SchemaDefs::MaxBootPosition);
1553
1554	if (aDevice == DeviceType_USBDevice)
1555	return setError (E_FAIL,
1556	tr ("Booting from USB devices is not currently supported"));
1557
1558	AutoCaller autoCaller (this);
1559	CheckComRCReturnRC (autoCaller.rc());
1560
1561	AutoLock alock (this);
1562
1563	HRESULT rc = checkStateDependency (MutableStateDep);
1564	CheckComRCReturnRC (rc);
1565
1566	mHWData.backup();
1567	mHWData->mBootOrder [aPosition - 1] = aDevice;
1568
1569	return S_OK;
1570	}
1571
1572	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
1573	{
1574	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1575	return setError (E_INVALIDARG,
1576	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1577	aPosition, SchemaDefs::MaxBootPosition);
1578
1579	AutoCaller autoCaller (this);
1580	CheckComRCReturnRC (autoCaller.rc());
1581
1582	AutoReaderLock alock (this);
1583
1584	*aDevice = mHWData->mBootOrder [aPosition - 1];
1585
1586	return S_OK;
1587	}
1588
1589	STDMETHODIMP Machine::AttachHardDisk (INPTR GUIDPARAM aId,
1590	DiskControllerType_T aCtl, LONG aDev)
1591	{
1592	Guid id = aId;
1593
1594	if (id.isEmpty() \|\|
1595	aCtl == DiskControllerType_InvalidController \|\|
1596	aDev < 0 \|\| aDev > 1)
1597	return E_INVALIDARG;
1598
1599	AutoCaller autoCaller (this);
1600	CheckComRCReturnRC (autoCaller.rc());
1601
1602	/* VirtualBox::getHardDisk() need read lock */
1603	AutoMultiLock <2> alock (mParent->rlock(), this->wlock());
1604
1605	HRESULT rc = checkStateDependency (MutableStateDep);
1606	CheckComRCReturnRC (rc);
1607
1608	if (!mData->mRegistered)
1609	return setError (E_FAIL,
1610	tr ("Cannot attach hard disks to an unregistered machine"));
1611
1612	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
1613
1614	if (mData->mMachineState >= MachineState_Running)
1615	return setError (E_FAIL,
1616	tr ("Invalid machine state: %d"), mData->mMachineState);
1617
1618	/* see if the device on the controller is already busy */
1619	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
1620	it != mHDData->mHDAttachments.end(); ++ it)
1621	{
1622	ComObjPtr <HardDiskAttachment> hda = *it;
1623	if (hda->controller() == aCtl && hda->deviceNumber() == aDev)
1624	{
1625	ComObjPtr <HardDisk> hd = hda->hardDisk();
1626	AutoLock hdLock (hd);
1627	return setError (E_FAIL,
1628	tr ("Hard disk '%ls' is already attached to device slot %d "
1629	"on controller %d"),
1630	hd->toString().raw(), aDev, aCtl);
1631	}
1632	}
1633
1634	/* find a hard disk by UUID */
1635	ComObjPtr <HardDisk> hd;
1636	rc = mParent->getHardDisk (id, hd);
1637	CheckComRCReturnRC (rc);
1638
1639	AutoLock hdLock (hd);
1640
1641	if (hd->isDifferencing())
1642	return setError (E_FAIL,
1643	tr ("Cannot attach the differencing hard disk '%ls'"),
1644	hd->toString().raw());
1645
1646	bool dirty = false;
1647
1648	switch (hd->type())
1649	{
1650	case HardDiskType_ImmutableHardDisk:
1651	{
1652	Assert (hd->machineId().isEmpty());
1653	/*
1654	* increase readers to protect from unregistration
1655	* until rollback()/commit() is done
1656	*/
1657	hd->addReader();
1658	Log3 (("A: %ls proteced\n", hd->toString().raw()));
1659	dirty = true;
1660	break;
1661	}
1662	case HardDiskType_WritethroughHardDisk:
1663	{
1664	Assert (hd->children().size() == 0);
1665	Assert (hd->snapshotId().isEmpty());
1666	/* fall through */
1667	}
1668	case HardDiskType_NormalHardDisk:
1669	{
1670	if (hd->machineId().isEmpty())
1671	{
1672	/* attach directly */
1673	hd->setMachineId (mData->mUuid);
1674	Log3 (("A: %ls associated with %Vuuid\n",
1675	hd->toString().raw(), mData->mUuid.raw()));
1676	dirty = true;
1677	}
1678	else
1679	{
1680	/* determine what the hard disk is already attached to */
1681	if (hd->snapshotId().isEmpty())
1682	{
1683	/* attached to some VM in its current state */
1684	if (hd->machineId() == mData->mUuid)
1685	{
1686	/*
1687	* attached to us, either in the backed up list of the
1688	* attachments or in the current one; the former is ok
1689	* (reattachment takes place within the same
1690	* "transaction") the latter is an error so check for it
1691	*/
1692	for (HDData::HDAttachmentList::const_iterator it =
1693	mHDData->mHDAttachments.begin();
1694	it != mHDData->mHDAttachments.end(); ++ it)
1695	{
1696	if ((*it)->hardDisk().equalsTo (hd))
1697	{
1698	return setError (E_FAIL,
1699	tr ("Normal/Writethrough hard disk '%ls' is "
1700	"currently attached to device slot %d "
1701	"on controller %d of this machine"),
1702	hd->toString().raw(),
1703	(it)->deviceNumber(), (it)->controller());
1704	}
1705	}
1706	/*
1707	* dirty = false to indicate we didn't set machineId
1708	* and prevent it from being reset in DetachHardDisk()
1709	*/
1710	Log3 (("A: %ls found in old\n", hd->toString().raw()));
1711	}
1712	else
1713	{
1714	/* attached to other VM */
1715	return setError (E_FAIL,
1716	tr ("Normal/Writethrough hard disk '%ls' is "
1717	"currently attached to a machine with "
1718	"UUID {%Vuuid}"),
1719	hd->toString().raw(), hd->machineId().raw());
1720	}
1721	}
1722	else
1723	{
1724	/*
1725	* here we go when the HardDiskType_NormalHardDisk
1726	* is attached to some VM (probably to this one, too)
1727	* at some particular snapshot, so we can create a diff
1728	* based on it
1729	*/
1730	Assert (!hd->machineId().isEmpty());
1731	/*
1732	* increase readers to protect from unregistration
1733	* until rollback()/commit() is done
1734	*/
1735	hd->addReader();
1736	Log3 (("A: %ls proteced\n", hd->toString().raw()));
1737	dirty = true;
1738	}
1739	}
1740
1741	break;
1742	}
1743	}
1744
1745	ComObjPtr <HardDiskAttachment> attachment;
1746	attachment.createObject();
1747	attachment->init (hd, aCtl, aDev, dirty);
1748
1749	mHDData.backup();
1750	mHDData->mHDAttachments.push_back (attachment);
1751	Log3 (("A: %ls attached\n", hd->toString().raw()));
1752
1753	/* note: diff images are actually created only in commit() */
1754
1755	return S_OK;
1756	}
1757
1758	STDMETHODIMP Machine::GetHardDisk (DiskControllerType_T aCtl,
1759	LONG aDev, IHardDisk **aHardDisk)
1760	{
1761	if (aCtl == DiskControllerType_InvalidController \|\|
1762	aDev < 0 \|\| aDev > 1)
1763	return E_INVALIDARG;
1764
1765	AutoCaller autoCaller (this);
1766	CheckComRCReturnRC (autoCaller.rc());
1767
1768	AutoReaderLock alock (this);
1769
1770	*aHardDisk = NULL;
1771
1772	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
1773	it != mHDData->mHDAttachments.end(); ++ it)
1774	{
1775	ComObjPtr <HardDiskAttachment> hda = *it;
1776	if (hda->controller() == aCtl && hda->deviceNumber() == aDev)
1777	{
1778	hda->hardDisk().queryInterfaceTo (aHardDisk);
1779	return S_OK;
1780	}
1781	}
1782
1783	return setError (E_INVALIDARG,
1784	tr ("No hard disk attached to device slot %d on controller %d"),
1785	aDev, aCtl);
1786	}
1787
1788	STDMETHODIMP Machine::DetachHardDisk (DiskControllerType_T aCtl, LONG aDev)
1789	{
1790	if (aCtl == DiskControllerType_InvalidController \|\|
1791	aDev < 0 \|\| aDev > 1)
1792	return E_INVALIDARG;
1793
1794	AutoCaller autoCaller (this);
1795	CheckComRCReturnRC (autoCaller.rc());
1796
1797	AutoLock alock (this);
1798
1799	HRESULT rc = checkStateDependency (MutableStateDep);
1800	CheckComRCReturnRC (rc);
1801
1802	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
1803
1804	if (mData->mMachineState >= MachineState_Running)
1805	return setError (E_FAIL,
1806	tr ("Invalid machine state: %d"), mData->mMachineState);
1807
1808	for (HDData::HDAttachmentList::iterator it = mHDData->mHDAttachments.begin();
1809	it != mHDData->mHDAttachments.end(); ++ it)
1810	{
1811	ComObjPtr <HardDiskAttachment> hda = *it;
1812	if (hda->controller() == aCtl && hda->deviceNumber() == aDev)
1813	{
1814	ComObjPtr <HardDisk> hd = hda->hardDisk();
1815	AutoLock hdLock (hd);
1816
1817	ComAssertRet (hd->children().size() == 0 &&
1818	hd->machineId() == mData->mUuid, E_FAIL);
1819
1820	if (hda->isDirty())
1821	{
1822	switch (hd->type())
1823	{
1824	case HardDiskType_ImmutableHardDisk:
1825	{
1826	/* decrease readers increased in AttachHardDisk() */
1827	hd->releaseReader();
1828	Log3 (("D: %ls released\n", hd->toString().raw()));
1829	break;
1830	}
1831	case HardDiskType_WritethroughHardDisk:
1832	{
1833	/* deassociate from this machine */
1834	hd->setMachineId (Guid());
1835	Log3 (("D: %ls deassociated\n", hd->toString().raw()));
1836	break;
1837	}
1838	case HardDiskType_NormalHardDisk:
1839	{
1840	if (hd->snapshotId().isEmpty())
1841	{
1842	/* deassociate from this machine */
1843	hd->setMachineId (Guid());
1844	Log3 (("D: %ls deassociated\n", hd->toString().raw()));
1845	}
1846	else
1847	{
1848	/* decrease readers increased in AttachHardDisk() */
1849	hd->releaseReader();
1850	Log3 (("%ls released\n", hd->toString().raw()));
1851	}
1852
1853	break;
1854	}
1855	}
1856	}
1857
1858	mHDData.backup();
1859	/*
1860	* we cannot use erase (it) below because backup() above will create
1861	* a copy of the list and make this copy active, but the iterator
1862	* still refers to the original and is not valid for a copy
1863	*/
1864	mHDData->mHDAttachments.remove (hda);
1865	Log3 (("D: %ls detached\n", hd->toString().raw()));
1866
1867	/*
1868	* note: Non-dirty hard disks are actually deassociated
1869	* and diff images are deleted only in commit()
1870	*/
1871
1872	return S_OK;
1873	}
1874	}
1875
1876	return setError (E_INVALIDARG,
1877	tr ("No hard disk attached to device slot %d on controller %d"),
1878	aDev, aCtl);
1879	}
1880
1881	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
1882	{
1883	if (!port)
1884	return E_POINTER;
1885	if (slot >= ELEMENTS (mSerialPorts))
1886	return setError (E_INVALIDARG, tr ("Invalid slot number: %d"), slot);
1887
1888	AutoCaller autoCaller (this);
1889	CheckComRCReturnRC (autoCaller.rc());
1890
1891	AutoReaderLock alock (this);
1892
1893	mSerialPorts [slot].queryInterfaceTo (port);
1894
1895	return S_OK;
1896	}
1897
1898	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
1899	{
1900	if (!port)
1901	return E_POINTER;
1902	if (slot >= ELEMENTS (mParallelPorts))
1903	return setError (E_INVALIDARG, tr ("Invalid slot number: %d"), slot);
1904
1905	AutoCaller autoCaller (this);
1906	CheckComRCReturnRC (autoCaller.rc());
1907
1908	AutoReaderLock alock (this);
1909
1910	mParallelPorts [slot].queryInterfaceTo (port);
1911
1912	return S_OK;
1913	}
1914
1915	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
1916	{
1917	if (!adapter)
1918	return E_POINTER;
1919	if (slot >= ELEMENTS (mNetworkAdapters))
1920	return setError (E_INVALIDARG, tr ("Invalid slot number: %d"), slot);
1921
1922	AutoCaller autoCaller (this);
1923	CheckComRCReturnRC (autoCaller.rc());
1924
1925	AutoReaderLock alock (this);
1926
1927	mNetworkAdapters [slot].queryInterfaceTo (adapter);
1928
1929	return S_OK;
1930	}
1931
1932	/**
1933	* @note Locks this object for reading.
1934	*/
1935	STDMETHODIMP Machine::GetNextExtraDataKey (INPTR BSTR aKey, BSTR aNextKey, BSTR aNextValue)
1936	{
1937	if (!aNextKey)
1938	return E_POINTER;
1939
1940	AutoCaller autoCaller (this);
1941	CheckComRCReturnRC (autoCaller.rc());
1942
1943	AutoReaderLock alock (this);
1944
1945	/* start with nothing found */
1946	*aNextKey = NULL;
1947	if (aNextValue)
1948	*aNextValue = NULL;
1949
1950	/* if we're ready and isConfigLocked() is FALSE then it means
1951	* that no config file exists yet, so return shortly */
1952	if (!isConfigLocked())
1953	return S_OK;
1954
1955	HRESULT rc = S_OK;
1956
1957	try
1958	{
1959	using namespace settings;
1960
1961	/* load the config file */
1962	File file (File::ReadWrite, mData->mHandleCfgFile,
1963	Utf8Str (mData->mConfigFileFull));
1964	XmlTreeBackend tree;
1965
1966	rc = VirtualBox::loadSettingsTree_Again (tree, file);
1967	CheckComRCReturnRC (rc);
1968
1969	Key machineNode = tree.rootKey().key ("Machine");
1970	Key extraDataNode = machineNode.findKey ("ExtraData");
1971
1972	if (!extraDataNode.isNull())
1973	{
1974	Key::List items = extraDataNode.keys ("ExtraDataItem");
1975	if (items.size())
1976	{
1977	for (Key::List::const_iterator it = items.begin();
1978	it != items.end(); ++ it)
1979	{
1980	Bstr key = (*it).stringValue ("name");
1981
1982	/* if we're supposed to return the first one */
1983	if (aKey == NULL)
1984	{
1985	key.cloneTo (aNextKey);
1986	if (aNextValue)
1987	{
1988	Bstr val = (*it).stringValue ("value");
1989	val.cloneTo (aNextValue);
1990	}
1991	return S_OK;
1992	}
1993
1994	/* did we find the key we're looking for? */
1995	if (key == aKey)
1996	{
1997	++ it;
1998	/* is there another item? */
1999	if (it != items.end())
2000	{
2001	Bstr key = (*it).stringValue ("name");
2002	key.cloneTo (aNextKey);
2003	if (aNextValue)
2004	{
2005	Bstr val = (*it).stringValue ("value");
2006	val.cloneTo (aNextValue);
2007	}
2008	}
2009	/* else it's the last one, arguments are already NULL */
2010	return S_OK;
2011	}
2012	}
2013	}
2014	}
2015
2016	/* Here we are when a) there are no items at all or b) there are items
2017	* but none of them equals to the requested non-NULL key. b) is an
2018	* error as well as a) if the key is non-NULL. When the key is NULL
2019	* (which is the case only when there are no items), we just fall
2020	* through to return NULLs and S_OK. */
2021
2022	if (aKey != NULL)
2023	return setError (E_FAIL,
2024	tr ("Could not find the extra data key '%ls'"), aKey);
2025	}
2026	catch (...)
2027	{
2028	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2029	}
2030
2031	return rc;
2032	}
2033
2034	/**
2035	* @note Locks this object for reading.
2036	*/
2037	STDMETHODIMP Machine::GetExtraData (INPTR BSTR aKey, BSTR *aValue)
2038	{
2039	if (!aKey)
2040	return E_INVALIDARG;
2041	if (!aValue)
2042	return E_POINTER;
2043
2044	AutoCaller autoCaller (this);
2045	CheckComRCReturnRC (autoCaller.rc());
2046
2047	AutoReaderLock alock (this);
2048
2049	/* start with nothing found */
2050	*aValue = NULL;
2051
2052	/* if we're ready and isConfigLocked() is FALSE then it means
2053	* that no config file exists yet, so return shortly */
2054	if (!isConfigLocked())
2055	return S_OK;
2056
2057	HRESULT rc = S_OK;
2058
2059	try
2060	{
2061	using namespace settings;
2062
2063	/* load the config file */
2064	File file (File::ReadWrite, mData->mHandleCfgFile,
2065	Utf8Str (mData->mConfigFileFull));
2066	XmlTreeBackend tree;
2067
2068	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2069	CheckComRCReturnRC (rc);
2070
2071	const Utf8Str key = aKey;
2072
2073	Key machineNode = tree.rootKey().key ("Machine");
2074	Key extraDataNode = machineNode.findKey ("ExtraData");
2075
2076	if (!extraDataNode.isNull())
2077	{
2078	/* check if the key exists */
2079	Key::List items = extraDataNode.keys ("ExtraDataItem");
2080	for (Key::List::const_iterator it = items.begin();
2081	it != items.end(); ++ it)
2082	{
2083	if (key == (*it).stringValue ("name"))
2084	{
2085	Bstr val = (*it).stringValue ("value");
2086	val.cloneTo (aValue);
2087	break;
2088	}
2089	}
2090	}
2091	}
2092	catch (...)
2093	{
2094	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2095	}
2096
2097	return rc;
2098	}
2099
2100	/**
2101	* @note Locks mParent for writing + this object for writing.
2102	*/
2103	STDMETHODIMP Machine::SetExtraData (INPTR BSTR aKey, INPTR BSTR aValue)
2104	{
2105	if (!aKey)
2106	return E_INVALIDARG;
2107
2108	AutoCaller autoCaller (this);
2109	CheckComRCReturnRC (autoCaller.rc());
2110
2111	/* VirtualBox::onExtraDataCanChange() and saveSettings() need mParent
2112	* lock (saveSettings() needs a write one) */
2113	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
2114
2115	if (mType == IsSnapshotMachine)
2116	{
2117	HRESULT rc = checkStateDependency (MutableStateDep);
2118	CheckComRCReturnRC (rc);
2119	}
2120
2121	bool changed = false;
2122	HRESULT rc = S_OK;
2123
2124	/* If we're ready and isConfigLocked() is FALSE then it means that no
2125	* config file exists yet, so call saveSettings() to create one. */
2126	if (!isConfigLocked())
2127	{
2128	rc = saveSettings (false /* aMarkCurStateAsModified */);
2129	CheckComRCReturnRC (rc);
2130	}
2131
2132	try
2133	{
2134	using namespace settings;
2135
2136	/* load the config file */
2137	File file (File::ReadWrite, mData->mHandleCfgFile,
2138	Utf8Str (mData->mConfigFileFull));
2139	XmlTreeBackend tree;
2140
2141	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
2142	CheckComRCReturnRC (rc);
2143
2144	const Utf8Str key = aKey;
2145	Bstr oldVal;
2146
2147	Key machineNode = tree.rootKey().key ("Machine");
2148	Key extraDataNode = machineNode.createKey ("ExtraData");
2149	Key extraDataItemNode;
2150
2151	Key::List items = extraDataNode.keys ("ExtraDataItem");
2152	for (Key::List::const_iterator it = items.begin();
2153	it != items.end(); ++ it)
2154	{
2155	if (key == (*it).stringValue ("name"))
2156	{
2157	extraDataItemNode = *it;
2158	oldVal = (*it).stringValue ("value");
2159	break;
2160	}
2161	}
2162
2163	/* When no key is found, oldVal is null */
2164	changed = oldVal != aValue;
2165
2166	if (changed)
2167	{
2168	/* ask for permission from all listeners */
2169	Bstr error;
2170	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, aValue, error))
2171	{
2172	const char *sep = error.isEmpty() ? "" : ": ";
2173	const BSTR err = error.isNull() ? (const BSTR) L"" : error.raw();
2174	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2175	sep, err));
2176	return setError (E_ACCESSDENIED,
2177	tr ("Could not set extra data because someone refused "
2178	"the requested change of '%ls' to '%ls'%s%ls"),
2179	aKey, aValue, sep, err);
2180	}
2181
2182	if (aValue != NULL)
2183	{
2184	if (extraDataItemNode.isNull())
2185	{
2186	extraDataItemNode = extraDataNode.appendKey ("ExtraDataItem");
2187	extraDataItemNode.setStringValue ("name", key);
2188	}
2189	extraDataItemNode.setStringValue ("value", Utf8Str (aValue));
2190	}
2191	else
2192	{
2193	/* an old value does for sure exist here (XML schema
2194	* guarantees that "value" may not absent in the
2195	* <ExtraDataItem> element) */
2196	Assert (!extraDataItemNode.isNull());
2197	extraDataItemNode.zap();
2198	}
2199
2200	/* save settings on success */
2201	rc = VirtualBox::saveSettingsTree (tree, file);
2202	CheckComRCReturnRC (rc);
2203	}
2204	}
2205	catch (...)
2206	{
2207	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2208	}
2209
2210	/* fire a notification */
2211	if (SUCCEEDED (rc) && changed)
2212	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2213
2214	return rc;
2215	}
2216
2217	STDMETHODIMP Machine::SaveSettings()
2218	{
2219	AutoCaller autoCaller (this);
2220	CheckComRCReturnRC (autoCaller.rc());
2221
2222	/* saveSettings() needs mParent lock */
2223	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
2224
2225	HRESULT rc = checkStateDependency (MutableStateDep);
2226	CheckComRCReturnRC (rc);
2227
2228	/* the settings file path may never be null */
2229	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2230
2231	/* save all VM data excluding snapshots */
2232	return saveSettings();
2233	}
2234
2235	STDMETHODIMP Machine::DiscardSettings()
2236	{
2237	AutoCaller autoCaller (this);
2238	CheckComRCReturnRC (autoCaller.rc());
2239
2240	AutoLock alock (this);
2241
2242	HRESULT rc = checkStateDependency (MutableStateDep);
2243	CheckComRCReturnRC (rc);
2244
2245	/*
2246	* during this rollback, the session will be notified if data has
2247	* been actually changed
2248	*/
2249	rollback (true /* aNotify */);
2250
2251	return S_OK;
2252	}
2253
2254	STDMETHODIMP Machine::DeleteSettings()
2255	{
2256	AutoCaller autoCaller (this);
2257	CheckComRCReturnRC (autoCaller.rc());
2258
2259	AutoLock alock (this);
2260
2261	HRESULT rc = checkStateDependency (MutableStateDep);
2262	CheckComRCReturnRC (rc);
2263
2264	if (mData->mRegistered)
2265	return setError (E_FAIL,
2266	tr ("Cannot delete settings of a registered machine"));
2267
2268	/* delete the settings only when the file actually exists */
2269	if (isConfigLocked())
2270	{
2271	unlockConfig();
2272	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2273	if (VBOX_FAILURE (vrc))
2274	return setError (E_FAIL,
2275	tr ("Could not delete the settings file '%ls' (%Vrc)"),
2276	mData->mConfigFileFull.raw(), vrc);
2277
2278	/* delete the Logs folder, nothing important should be left
2279	* there (we don't check for errors because the user might have
2280	* some private files there that we don't want to delete) */
2281	Utf8Str logFolder;
2282	getLogFolder (logFolder);
2283	Assert (!logFolder.isEmpty());
2284	if (RTDirExists (logFolder))
2285	{
2286	/* Delete all VBox.log[.N] files from the Logs folder
2287	* (this must be in sync with the rotation logic in
2288	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2289	* files that may have been created by the GUI. */
2290	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2291	RTFileDelete (log);
2292	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2293	RTFileDelete (log);
2294	for (int i = 3; i >= 0; i--)
2295	{
2296	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2297	RTFileDelete (log);
2298	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2299	RTFileDelete (log);
2300	}
2301
2302	RTDirRemove (logFolder);
2303	}
2304
2305	/* delete the Snapshots folder, nothing important should be left
2306	* there (we don't check for errors because the user might have
2307	* some private files there that we don't want to delete) */
2308	Utf8Str snapshotFolder = mUserData->mSnapshotFolderFull;
2309	Assert (!snapshotFolder.isEmpty());
2310	if (RTDirExists (snapshotFolder))
2311	RTDirRemove (snapshotFolder);
2312
2313	/* delete the directory that contains the settings file, but only
2314	* if it matches the VM name (i.e. a structure created by default in
2315	* prepareSaveSettings()) */
2316	{
2317	Utf8Str settingsDir;
2318	if (isInOwnDir (&settingsDir))
2319	RTDirRemove (settingsDir);
2320	}
2321	}
2322
2323	return S_OK;
2324	}
2325
2326	STDMETHODIMP Machine::GetSnapshot (INPTR GUIDPARAM aId, ISnapshot **aSnapshot)
2327	{
2328	if (!aSnapshot)
2329	return E_POINTER;
2330
2331	AutoCaller autoCaller (this);
2332	CheckComRCReturnRC (autoCaller.rc());
2333
2334	AutoReaderLock alock (this);
2335
2336	Guid id = aId;
2337	ComObjPtr <Snapshot> snapshot;
2338
2339	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2340	snapshot.queryInterfaceTo (aSnapshot);
2341
2342	return rc;
2343	}
2344
2345	STDMETHODIMP Machine::FindSnapshot (INPTR BSTR aName, ISnapshot **aSnapshot)
2346	{
2347	if (!aName)
2348	return E_INVALIDARG;
2349	if (!aSnapshot)
2350	return E_POINTER;
2351
2352	AutoCaller autoCaller (this);
2353	CheckComRCReturnRC (autoCaller.rc());
2354
2355	AutoReaderLock alock (this);
2356
2357	ComObjPtr <Snapshot> snapshot;
2358
2359	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2360	snapshot.queryInterfaceTo (aSnapshot);
2361
2362	return rc;
2363	}
2364
2365	STDMETHODIMP Machine::SetCurrentSnapshot (INPTR GUIDPARAM aId)
2366	{
2367	/// @todo (dmik) don't forget to set
2368	// mData->mCurrentStateModified to FALSE
2369
2370	return setError (E_NOTIMPL, "Not implemented");
2371	}
2372
2373	STDMETHODIMP
2374	Machine::CreateSharedFolder (INPTR BSTR aName, INPTR BSTR aHostPath)
2375	{
2376	if (!aName \|\| !aHostPath)
2377	return E_INVALIDARG;
2378
2379	AutoCaller autoCaller (this);
2380	CheckComRCReturnRC (autoCaller.rc());
2381
2382	AutoLock alock (this);
2383
2384	HRESULT rc = checkStateDependency (MutableStateDep);
2385	CheckComRCReturnRC (rc);
2386
2387	ComObjPtr <SharedFolder> sharedFolder;
2388	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2389	if (SUCCEEDED (rc))
2390	return setError (E_FAIL,
2391	tr ("Shared folder named '%ls' already exists"), aName);
2392
2393	sharedFolder.createObject();
2394	rc = sharedFolder->init (machine(), aName, aHostPath);
2395	CheckComRCReturnRC (rc);
2396
2397	BOOL accessible = FALSE;
2398	rc = sharedFolder->COMGETTER(Accessible) (&accessible);
2399	CheckComRCReturnRC (rc);
2400
2401	if (!accessible)
2402	return setError (E_FAIL,
2403	tr ("Shared folder host path '%ls' is not accessible"), aHostPath);
2404
2405	mHWData.backup();
2406	mHWData->mSharedFolders.push_back (sharedFolder);
2407
2408	/* inform the direct session if any */
2409	alock.leave();
2410	onSharedFolderChange();
2411
2412	return S_OK;
2413	}
2414
2415	STDMETHODIMP Machine::RemoveSharedFolder (INPTR BSTR aName)
2416	{
2417	if (!aName)
2418	return E_INVALIDARG;
2419
2420	AutoCaller autoCaller (this);
2421	CheckComRCReturnRC (autoCaller.rc());
2422
2423	AutoReaderLock alock (this);
2424
2425	HRESULT rc = checkStateDependency (MutableStateDep);
2426	CheckComRCReturnRC (rc);
2427
2428	ComObjPtr <SharedFolder> sharedFolder;
2429	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2430	CheckComRCReturnRC (rc);
2431
2432	mHWData.backup();
2433	mHWData->mSharedFolders.remove (sharedFolder);
2434
2435	/* inform the direct session if any */
2436	alock.leave();
2437	onSharedFolderChange();
2438
2439	return S_OK;
2440	}
2441
2442	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2443	{
2444	if (!aCanShow)
2445	return E_POINTER;
2446
2447	/* start with No */
2448	*aCanShow = FALSE;
2449
2450	AutoCaller autoCaller (this);
2451	AssertComRCReturnRC (autoCaller.rc());
2452
2453	ComPtr <IInternalSessionControl> directControl;
2454	{
2455	AutoReaderLock alock (this);
2456
2457	if (mData->mSession.mState != SessionState_SessionOpen)
2458	return setError (E_FAIL,
2459	tr ("Machine session is not open (session state: %d)"),
2460	mData->mSession.mState);
2461
2462	directControl = mData->mSession.mDirectControl;
2463	}
2464
2465	/* ignore calls made after #OnSessionEnd() is called */
2466	if (!directControl)
2467	return S_OK;
2468
2469	ULONG64 dummy;
2470	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2471	}
2472
2473	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2474	{
2475	if (!aWinId)
2476	return E_POINTER;
2477
2478	AutoCaller autoCaller (this);
2479	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2480
2481	ComPtr <IInternalSessionControl> directControl;
2482	{
2483	AutoReaderLock alock (this);
2484
2485	if (mData->mSession.mState != SessionState_SessionOpen)
2486	return setError (E_FAIL,
2487	tr ("Machine session is not open (session state: %d)"),
2488	mData->mSession.mState);
2489
2490	directControl = mData->mSession.mDirectControl;
2491	}
2492
2493	/* ignore calls made after #OnSessionEnd() is called */
2494	if (!directControl)
2495	return S_OK;
2496
2497	BOOL dummy;
2498	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2499	}
2500
2501	// public methods for internal purposes
2502	/////////////////////////////////////////////////////////////////////////////
2503
2504	/**
2505	* Returns the session machine object associated with the this machine.
2506	* The returned session machine is null if no direct session is currently open.
2507	*
2508	* @note locks this object for reading.
2509	*/
2510	ComObjPtr <SessionMachine> Machine::sessionMachine()
2511	{
2512	ComObjPtr <SessionMachine> sm;
2513
2514	AutoLimitedCaller autoCaller (this);
2515	AssertComRCReturn (autoCaller.rc(), sm);
2516
2517	/* return null for inaccessible machines */
2518	if (autoCaller.state() != Ready)
2519	return sm;
2520
2521	AutoReaderLock alock (this);
2522
2523	sm = mData->mSession.mMachine;
2524	Assert (!sm.isNull() \|\|
2525	mData->mSession.mState != SessionState_SessionOpen);
2526
2527	return sm;
2528	}
2529
2530	/**
2531	* Saves the registry entry of this machine to the given configuration node.
2532	*
2533	* @param aEntryNode Node to save the registry entry to.
2534	*
2535	* @note locks this object for reading.
2536	*/
2537	HRESULT Machine::saveRegistryEntry (settings::Key &aEntryNode)
2538	{
2539	AssertReturn (!aEntryNode.isNull(), E_FAIL);
2540
2541	AutoLimitedCaller autoCaller (this);
2542	AssertComRCReturnRC (autoCaller.rc());
2543
2544	AutoReaderLock alock (this);
2545
2546	/* UUID */
2547	aEntryNode.setValue <Guid> ("uuid", mData->mUuid);
2548	/* settings file name (possibly, relative) */
2549	aEntryNode.setValue <Bstr> ("src", mData->mConfigFile);
2550
2551	return S_OK;
2552	}
2553
2554	/**
2555	* Calculates the absolute path of the given path taking the directory of
2556	* the machine settings file as the current directory.
2557	*
2558	* @param aPath path to calculate the absolute path for
2559	* @param aResult where to put the result (used only on success,
2560	* so can be the same Utf8Str instance as passed as \a aPath)
2561	* @return VirtualBox result
2562	*
2563	* @note Locks this object for reading.
2564	*/
2565	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
2566	{
2567	AutoCaller autoCaller (this);
2568	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2569
2570	AutoReaderLock alock (this);
2571
2572	AssertReturn (!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
2573
2574	Utf8Str settingsDir = mData->mConfigFileFull;
2575
2576	RTPathStripFilename (settingsDir.mutableRaw());
2577	char folder [RTPATH_MAX];
2578	int vrc = RTPathAbsEx (settingsDir, aPath,
2579	folder, sizeof (folder));
2580	if (VBOX_SUCCESS (vrc))
2581	aResult = folder;
2582
2583	return vrc;
2584	}
2585
2586	/**
2587	* Tries to calculate the relative path of the given absolute path using the
2588	* directory of the machine settings file as the base directory.
2589	*
2590	* @param aPath absolute path to calculate the relative path for
2591	* @param aResult where to put the result (used only when it's possible to
2592	* make a relative path from the given absolute path;
2593	* otherwise left untouched)
2594	*
2595	* @note Locks this object for reading.
2596	*/
2597	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
2598	{
2599	AutoCaller autoCaller (this);
2600	AssertComRCReturn (autoCaller.rc(), (void) 0);
2601
2602	AutoReaderLock alock (this);
2603
2604	AssertReturnVoid (!mData->mConfigFileFull.isNull());
2605
2606	Utf8Str settingsDir = mData->mConfigFileFull;
2607
2608	RTPathStripFilename (settingsDir.mutableRaw());
2609	if (RTPathStartsWith (aPath, settingsDir))
2610	{
2611	/* when assigning, we create a separate Utf8Str instance because both
2612	* aPath and aResult can point to the same memory location when this
2613	* func is called (if we just do aResult = aPath, aResult will be freed
2614	* first, and since its the same as aPath, an attempt to copy garbage
2615	* will be made. */
2616	aResult = Utf8Str (aPath + settingsDir.length() + 1);
2617	}
2618	}
2619
2620	/**
2621	* Returns the full path to the machine's log folder in the
2622	* \a aLogFolder argument.
2623	*/
2624	void Machine::getLogFolder (Utf8Str &aLogFolder)
2625	{
2626	AutoCaller autoCaller (this);
2627	AssertComRCReturnVoid (autoCaller.rc());
2628
2629	AutoReaderLock alock (this);
2630
2631	Utf8Str settingsDir;
2632	if (isInOwnDir (&settingsDir))
2633	{
2634	/* Log folder is <Machines>/<VM_Name>/Logs */
2635	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
2636	}
2637	else
2638	{
2639	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
2640	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
2641	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
2642	RTPATH_DELIMITER);
2643	}
2644	}
2645
2646	/**
2647	* Returns @c true if the given DVD image is attached to this machine either
2648	* in the current state or in any of the snapshots.
2649	*
2650	* @param aId Image ID to check.
2651	* @param aUsage Type of the check.
2652	*
2653	* @note Locks this object + DVD object for reading.
2654	*/
2655	bool Machine::isDVDImageUsed (const Guid &aId, ResourceUsage_T aUsage)
2656	{
2657	AutoLimitedCaller autoCaller (this);
2658	AssertComRCReturn (autoCaller.rc(), false);
2659
2660	/* answer 'not attached' if the VM is limited */
2661	if (autoCaller.state() == Limited)
2662	return false;
2663
2664	AutoReaderLock alock (this);
2665
2666	Machine *m = this;
2667
2668	/* take the session machine when appropriate */
2669	if (!mData->mSession.mMachine.isNull())
2670	m = mData->mSession.mMachine;
2671
2672	/* first, check the current state */
2673	{
2674	const ComObjPtr <DVDDrive> &dvd = m->mDVDDrive;
2675	AssertReturn (!dvd.isNull(), false);
2676
2677	AutoReaderLock dvdLock (dvd);
2678
2679	/* loop over the backed up (permanent) and current (temporary) DVD data */
2680	DVDDrive::Data *d [2];
2681	if (dvd->data().isBackedUp())
2682	{
2683	d [0] = dvd->data().backedUpData();
2684	d [1] = dvd->data().data();
2685	}
2686	else
2687	{
2688	d [0] = dvd->data().data();
2689	d [1] = NULL;
2690	}
2691
2692	if (!(aUsage & ResourceUsage_PermanentUsage))
2693	d [0] = NULL;
2694	if (!(aUsage & ResourceUsage_TemporaryUsage))
2695	d [1] = NULL;
2696
2697	for (unsigned i = 0; i < ELEMENTS (d); ++ i)
2698	{
2699	if (d [i] &&
2700	d [i]->mDriveState == DriveState_ImageMounted)
2701	{
2702	Guid id;
2703	HRESULT rc = d [i]->mDVDImage->COMGETTER(Id) (id.asOutParam());
2704	AssertComRC (rc);
2705	if (id == aId)
2706	return true;
2707	}
2708	}
2709	}
2710
2711	/* then, check snapshots if any */
2712	if (aUsage & ResourceUsage_PermanentUsage)
2713	{
2714	if (!mData->mFirstSnapshot.isNull() &&
2715	mData->mFirstSnapshot->isDVDImageUsed (aId))
2716	return true;
2717	}
2718
2719	return false;
2720	}
2721
2722	/**
2723	* Returns @c true if the given Floppy image is attached to this machine either
2724	* in the current state or in any of the snapshots.
2725	*
2726	* @param aId Image ID to check.
2727	* @param aUsage Type of the check.
2728	*
2729	* @note Locks this object + Floppy object for reading.
2730	*/
2731	bool Machine::isFloppyImageUsed (const Guid &aId, ResourceUsage_T aUsage)
2732	{
2733	AutoCaller autoCaller (this);
2734	AssertComRCReturn (autoCaller.rc(), false);
2735
2736	/* answer 'not attached' if the VM is limited */
2737	if (autoCaller.state() == Limited)
2738	return false;
2739
2740	AutoReaderLock alock (this);
2741
2742	Machine *m = this;
2743
2744	/* take the session machine when appropriate */
2745	if (!mData->mSession.mMachine.isNull())
2746	m = mData->mSession.mMachine;
2747
2748	/* first, check the current state */
2749	{
2750	const ComObjPtr <FloppyDrive> &floppy = m->mFloppyDrive;
2751	AssertReturn (!floppy.isNull(), false);
2752
2753	AutoReaderLock floppyLock (floppy);
2754
2755	/* loop over the backed up (permanent) and current (temporary) Floppy data */
2756	FloppyDrive::Data *d [2];
2757	if (floppy->data().isBackedUp())
2758	{
2759	d [0] = floppy->data().backedUpData();
2760	d [1] = floppy->data().data();
2761	}
2762	else
2763	{
2764	d [0] = floppy->data().data();
2765	d [1] = NULL;
2766	}
2767
2768	if (!(aUsage & ResourceUsage_PermanentUsage))
2769	d [0] = NULL;
2770	if (!(aUsage & ResourceUsage_TemporaryUsage))
2771	d [1] = NULL;
2772
2773	for (unsigned i = 0; i < ELEMENTS (d); ++ i)
2774	{
2775	if (d [i] &&
2776	d [i]->mDriveState == DriveState_ImageMounted)
2777	{
2778	Guid id;
2779	HRESULT rc = d [i]->mFloppyImage->COMGETTER(Id) (id.asOutParam());
2780	AssertComRC (rc);
2781	if (id == aId)
2782	return true;
2783	}
2784	}
2785	}
2786
2787	/* then, check snapshots if any */
2788	if (aUsage & ResourceUsage_PermanentUsage)
2789	{
2790	if (!mData->mFirstSnapshot.isNull() &&
2791	mData->mFirstSnapshot->isFloppyImageUsed (aId))
2792	return true;
2793	}
2794
2795	return false;
2796	}
2797
2798	/**
2799	* @note Locks mParent and this object for writing,
2800	* calls the client process (outside the lock).
2801	*/
2802	HRESULT Machine::openSession (IInternalSessionControl *aControl)
2803	{
2804	LogFlowThisFuncEnter();
2805
2806	AssertReturn (aControl, E_FAIL);
2807
2808	AutoCaller autoCaller (this);
2809	CheckComRCReturnRC (autoCaller.rc());
2810
2811	/* We need VirtualBox lock because of Progress::notifyComplete() */
2812	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
2813
2814	if (!mData->mRegistered)
2815	return setError (E_UNEXPECTED,
2816	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
2817
2818	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
2819
2820	if (mData->mSession.mState == SessionState_SessionOpen \|\|
2821	mData->mSession.mState == SessionState_SessionClosing)
2822	return setError (E_ACCESSDENIED,
2823	tr ("A session for the machine '%ls' is currently open "
2824	"(or being closed)"),
2825	mUserData->mName.raw());
2826
2827	/* may not be Running */
2828	AssertReturn (mData->mMachineState < MachineState_Running, E_FAIL);
2829
2830	/* get the sesion PID */
2831	RTPROCESS pid = NIL_RTPROCESS;
2832	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
2833	aControl->GetPID ((ULONG *) &pid);
2834	Assert (pid != NIL_RTPROCESS);
2835
2836	if (mData->mSession.mState == SessionState_SessionSpawning)
2837	{
2838	/* This machine is awaiting for a spawning session to be opened, so
2839	* reject any other open attempts from processes other than one
2840	* started by #openRemoteSession(). */
2841
2842	LogFlowThisFunc (("mSession.mPid=%d(0x%x)\n",
2843	mData->mSession.mPid, mData->mSession.mPid));
2844	LogFlowThisFunc (("session.pid=%d(0x%x)\n", pid, pid));
2845
2846	if (mData->mSession.mPid != pid)
2847	return setError (E_ACCESSDENIED,
2848	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
2849	"session with the machine named '%ls', while only a process "
2850	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
2851	pid, mUserData->mName.raw(), mData->mSession.mPid);
2852	}
2853
2854	/* create a SessionMachine object */
2855	ComObjPtr <SessionMachine> sessionMachine;
2856	sessionMachine.createObject();
2857	HRESULT rc = sessionMachine->init (this);
2858	AssertComRC (rc);
2859
2860	if (SUCCEEDED (rc))
2861	{
2862	/*
2863	* Set the session state to Spawning to protect against subsequent
2864	* attempts to open a session and to unregister the machine after
2865	* we leave the lock.
2866	*/
2867	SessionState_T origState = mData->mSession.mState;
2868	mData->mSession.mState = SessionState_SessionSpawning;
2869
2870	/*
2871	* Leave the lock before calling the client process -- it will call
2872	* Machine/SessionMachine methods. Leaving the lock here is quite safe
2873	* because the state is Spawning, so that openRemotesession() and
2874	* openExistingSession() calls will fail. This method, called before we
2875	* enter the lock again, will fail because of the wrong PID.
2876	*
2877	* Note that mData->mSession.mRemoteControls accessed outside
2878	* the lock may not be modified when state is Spawning, so it's safe.
2879	*/
2880	alock.leave();
2881
2882	LogFlowThisFunc (("Calling AssignMachine()...\n"));
2883	rc = aControl->AssignMachine (sessionMachine);
2884	LogFlowThisFunc (("AssignMachine() returned %08X\n", rc));
2885
2886	/* The failure may w/o any error info (from RPC), so provide one */
2887	if (FAILED (rc))
2888	setError (rc,
2889	tr ("Failed to assign the machine to the session"));
2890
2891	if (SUCCEEDED (rc) && origState == SessionState_SessionSpawning)
2892	{
2893	/* complete the remote session initialization */
2894
2895	/* get the console from the direct session */
2896	ComPtr <IConsole> console;
2897	rc = aControl->GetRemoteConsole (console.asOutParam());
2898	ComAssertComRC (rc);
2899
2900	if (SUCCEEDED (rc) && !console)
2901	{
2902	ComAssert (!!console);
2903	rc = E_FAIL;
2904	}
2905
2906	/* assign machine & console to the remote sesion */
2907	if (SUCCEEDED (rc))
2908	{
2909	/*
2910	* after openRemoteSession(), the first and the only
2911	* entry in remoteControls is that remote session
2912	*/
2913	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
2914	rc = mData->mSession.mRemoteControls.front()->
2915	AssignRemoteMachine (sessionMachine, console);
2916	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
2917
2918	/* The failure may w/o any error info (from RPC), so provide one */
2919	if (FAILED (rc))
2920	setError (rc,
2921	tr ("Failed to assign the machine to the remote session"));
2922	}
2923
2924	if (FAILED (rc))
2925	aControl->Uninitialize();
2926	}
2927
2928	/* enter the lock again */
2929	alock.enter();
2930
2931	/* Restore the session state */
2932	mData->mSession.mState = origState;
2933	}
2934
2935	/* finalize spawning amyway (this is why we don't return on errors above) */
2936	if (mData->mSession.mState == SessionState_SessionSpawning)
2937	{
2938	/* Note that the progress object is finalized later */
2939
2940	/* We don't reset mSession.mPid and mType here because both are
2941	* necessary for SessionMachine::uninit() to reap the child process
2942	* later. */
2943
2944	if (FAILED (rc))
2945	{
2946	/* Remove the remote control from the list on failure
2947	* and reset session state to Closed. */
2948	mData->mSession.mRemoteControls.clear();
2949	mData->mSession.mState = SessionState_SessionClosed;
2950	}
2951	}
2952	else
2953	{
2954	/* memorize PID of the directly opened session */
2955	if (SUCCEEDED (rc))
2956	mData->mSession.mPid = pid;
2957	}
2958
2959	if (SUCCEEDED (rc))
2960	{
2961	/* memorize the direct session control */
2962	mData->mSession.mDirectControl = aControl;
2963	mData->mSession.mState = SessionState_SessionOpen;
2964	/* associate the SessionMachine with this Machine */
2965	mData->mSession.mMachine = sessionMachine;
2966	}
2967
2968	if (mData->mSession.mProgress)
2969	{
2970	/* finalize the progress after setting the state, for consistency */
2971	mData->mSession.mProgress->notifyComplete (rc);
2972	mData->mSession.mProgress.setNull();
2973	}
2974
2975	/* uninitialize the created session machine on failure */
2976	if (FAILED (rc))
2977	sessionMachine->uninit();
2978
2979	LogFlowThisFunc (("rc=%08X\n", rc));
2980	LogFlowThisFuncLeave();
2981	return rc;
2982	}
2983
2984	/**
2985	* @note Locks this object for writing, calls the client process
2986	* (inside the lock).
2987	*/
2988	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
2989	INPTR BSTR aType, INPTR BSTR aEnvironment,
2990	Progress *aProgress)
2991	{
2992	LogFlowThisFuncEnter();
2993
2994	AssertReturn (aControl, E_FAIL);
2995	AssertReturn (aProgress, E_FAIL);
2996
2997	AutoCaller autoCaller (this);
2998	CheckComRCReturnRC (autoCaller.rc());
2999
3000	AutoLock alock (this);
3001
3002	if (!mData->mRegistered)
3003	return setError (E_UNEXPECTED,
3004	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3005
3006	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3007
3008	if (mData->mSession.mState == SessionState_SessionOpen \|\|
3009	mData->mSession.mState == SessionState_SessionSpawning \|\|
3010	mData->mSession.mState == SessionState_SessionClosing)
3011	return setError (E_ACCESSDENIED,
3012	tr ("A session for the machine '%ls' is currently open "
3013	"(or being opened or closed)"),
3014	mUserData->mName.raw());
3015
3016	/* may not be Running */
3017	AssertReturn (mData->mMachineState < MachineState_Running, E_FAIL);
3018
3019	/* get the path to the executable */
3020	char path [RTPATH_MAX];
3021	RTPathAppPrivateArch (path, RTPATH_MAX);
3022	size_t sz = strlen (path);
3023	path [sz++] = RTPATH_DELIMITER;
3024	path [sz] = 0;
3025	char *cmd = path + sz;
3026	sz = RTPATH_MAX - sz;
3027
3028	int vrc = VINF_SUCCESS;
3029	RTPROCESS pid = NIL_RTPROCESS;
3030
3031	RTENV env = RTENV_DEFAULT;
3032
3033	if (aEnvironment)
3034	{
3035	char *newEnvStr = NULL;
3036
3037	do
3038	{
3039	/* clone the current environment */
3040	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3041	AssertRCBreak (vrc2, vrc = vrc2);
3042
3043	newEnvStr = RTStrDup(Utf8Str (aEnvironment));
3044	AssertPtrBreak (newEnvStr, vrc = vrc2);
3045
3046	/* put new variables to the environment
3047	* (ignore empty variable names here since RTEnv API
3048	* intentionally doesn't do that) */
3049	char *var = newEnvStr;
3050	for (char p = newEnvStr; p; ++ p)
3051	{
3052	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3053	{
3054	*p = '\0';
3055	if (*var)
3056	{
3057	char *val = strchr (var, '=');
3058	if (val)
3059	{
3060	*val++ = '\0';
3061	vrc2 = RTEnvSetEx (env, var, val);
3062	}
3063	else
3064	vrc2 = RTEnvUnsetEx (env, var);
3065	if (VBOX_FAILURE (vrc2))
3066	break;
3067	}
3068	var = p + 1;
3069	}
3070	}
3071	if (VBOX_SUCCESS (vrc2) && *var)
3072	vrc2 = RTEnvPutEx (env, var);
3073
3074	AssertRCBreak (vrc2, vrc = vrc2);
3075	}
3076	while (0);
3077
3078	if (newEnvStr != NULL)
3079	RTStrFree(newEnvStr);
3080	}
3081
3082	Bstr type (aType);
3083	if (type == "gui")
3084	{
3085	#ifdef RT_OS_DARWIN /* Avoid Lanuch Services confusing this with the selector by using a helper app. */
3086	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3087	#else
3088	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3089	#endif
3090	Assert (sz >= sizeof (VirtualBox_exe));
3091	strcpy (cmd, VirtualBox_exe);
3092
3093	Utf8Str idStr = mData->mUuid.toString();
3094	#ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3095	const char * args[] = {path, "-startvm", idStr, 0 };
3096	#else
3097	Utf8Str name = mUserData->mName;
3098	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3099	#endif
3100	vrc = RTProcCreate (path, args, env, 0, &pid);
3101	}
3102	else
3103	#ifdef VBOX_VRDP
3104	if (type == "vrdp")
3105	{
3106	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3107	Assert (sz >= sizeof (VBoxVRDP_exe));
3108	strcpy (cmd, VBoxVRDP_exe);
3109
3110	Utf8Str idStr = mData->mUuid.toString();
3111	#ifdef RT_OS_WINDOWS
3112	const char * args[] = {path, "-startvm", idStr, 0 };
3113	#else
3114	Utf8Str name = mUserData->mName;
3115	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3116	#endif
3117	vrc = RTProcCreate (path, args, env, 0, &pid);
3118	}
3119	else
3120	#endif /* VBOX_VRDP */
3121	if (type == "capture")
3122	{
3123	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3124	Assert (sz >= sizeof (VBoxVRDP_exe));
3125	strcpy (cmd, VBoxVRDP_exe);
3126
3127	Utf8Str idStr = mData->mUuid.toString();
3128	#ifdef RT_OS_WINDOWS
3129	const char * args[] = {path, "-startvm", idStr, "-capture", 0 };
3130	#else
3131	Utf8Str name = mUserData->mName;
3132	const char * args[] = {path, "-comment", name, "-startvm", idStr, "-capture", 0 };
3133	#endif
3134	vrc = RTProcCreate (path, args, env, 0, &pid);
3135	}
3136	else
3137	{
3138	RTEnvDestroy (env);
3139	return setError (E_INVALIDARG,
3140	tr ("Invalid session type: '%ls'"), aType);
3141	}
3142
3143	RTEnvDestroy (env);
3144
3145	if (VBOX_FAILURE (vrc))
3146	return setError (E_FAIL,
3147	tr ("Could not launch a process for the machine '%ls' (%Vrc)"),
3148	mUserData->mName.raw(), vrc);
3149
3150	LogFlowThisFunc (("launched.pid=%d(0x%x)\n", pid, pid));
3151
3152	/*
3153	* Note that we don't leave the lock here before calling the client,
3154	* because it doesn't need to call us back if called with a NULL argument.
3155	* Leaving the lock herer is dangerous because we didn't prepare the
3156	* launch data yet, but the client we've just started may happen to be
3157	* too fast and call openSession() that will fail (because of PID, etc.),
3158	* so that the Machine will never get out of the Spawning session state.
3159	*/
3160
3161	/* inform the session that it will be a remote one */
3162	LogFlowThisFunc (("Calling AssignMachine (NULL)...\n"));
3163	HRESULT rc = aControl->AssignMachine (NULL);
3164	LogFlowThisFunc (("AssignMachine (NULL) returned %08X\n", rc));
3165
3166	if (FAILED (rc))
3167	{
3168	/* restore the session state */
3169	mData->mSession.mState = SessionState_SessionClosed;
3170	/* The failure may w/o any error info (from RPC), so provide one */
3171	return setError (rc,
3172	tr ("Failed to assign the machine to the session"));
3173	}
3174
3175	/* attach launch data to the machine */
3176	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3177	mData->mSession.mRemoteControls.push_back (aControl);
3178	mData->mSession.mProgress = aProgress;
3179	mData->mSession.mPid = pid;
3180	mData->mSession.mState = SessionState_SessionSpawning;
3181	mData->mSession.mType = type;
3182
3183	LogFlowThisFuncLeave();
3184	return S_OK;
3185	}
3186
3187	/**
3188	* @note Locks this object for writing, calls the client process
3189	* (outside the lock).
3190	*/
3191	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3192	{
3193	LogFlowThisFuncEnter();
3194
3195	AssertReturn (aControl, E_FAIL);
3196
3197	AutoCaller autoCaller (this);
3198	CheckComRCReturnRC (autoCaller.rc());
3199
3200	AutoLock alock (this);
3201
3202	if (!mData->mRegistered)
3203	return setError (E_UNEXPECTED,
3204	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3205
3206	LogFlowThisFunc (("mSession.state=%d\n", mData->mSession.mState));
3207
3208	if (mData->mSession.mState != SessionState_SessionOpen)
3209	return setError (E_ACCESSDENIED,
3210	tr ("The machine '%ls' does not have an open session"),
3211	mUserData->mName.raw());
3212
3213	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
3214
3215	/*
3216	* Get the console from the direct session (note that we don't leave the
3217	* lock here because GetRemoteConsole must not call us back).
3218	*/
3219	ComPtr <IConsole> console;
3220	HRESULT rc = mData->mSession.mDirectControl->
3221	GetRemoteConsole (console.asOutParam());
3222	if (FAILED (rc))
3223	{
3224	/* The failure may w/o any error info (from RPC), so provide one */
3225	return setError (rc,
3226	tr ("Failed to get a console object from the direct session"));
3227	}
3228
3229	ComAssertRet (!console.isNull(), E_FAIL);
3230
3231	ComObjPtr <SessionMachine> sessionMachine = mData->mSession.mMachine;
3232	AssertReturn (!sessionMachine.isNull(), E_FAIL);
3233
3234	/*
3235	* Leave the lock before calling the client process. It's safe here
3236	* since the only thing to do after we get the lock again is to add
3237	* the remote control to the list (which doesn't directly influence
3238	* anything).
3239	*/
3240	alock.leave();
3241
3242	/* attach the remote session to the machine */
3243	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3244	rc = aControl->AssignRemoteMachine (sessionMachine, console);
3245	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3246
3247	/* The failure may w/o any error info (from RPC), so provide one */
3248	if (FAILED (rc))
3249	return setError (rc,
3250	tr ("Failed to assign the machine to the session"));
3251
3252	alock.enter();
3253
3254	/* need to revalidate the state after entering the lock again */
3255	if (mData->mSession.mState != SessionState_SessionOpen)
3256	{
3257	aControl->Uninitialize();
3258
3259	return setError (E_ACCESSDENIED,
3260	tr ("The machine '%ls' does not have an open session"),
3261	mUserData->mName.raw());
3262	}
3263
3264	/* store the control in the list */
3265	mData->mSession.mRemoteControls.push_back (aControl);
3266
3267	LogFlowThisFuncLeave();
3268	return S_OK;
3269	}
3270
3271	/**
3272	* Checks that the registered flag of the machine can be set according to
3273	* the argument and sets it. On success, commits and saves all settings.
3274	*
3275	* @note When this machine is inaccessible, the only valid value for \a
3276	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
3277	* inaccessible machines are not currently supported. Note that unregistering
3278	* an inaccessible machine will \b uninitialize this machine object. Therefore,
3279	* the caller must make sure there are no active Machine::addCaller() calls
3280	* on the current thread because this will block Machine::uninit().
3281	*
3282	* @note Must be called from mParent's write lock. Locks this object and
3283	* children for writing.
3284	*/
3285	HRESULT Machine::trySetRegistered (BOOL aRegistered)
3286	{
3287	AssertReturn (mParent->isLockedOnCurrentThread(), E_FAIL);
3288
3289	AutoLimitedCaller autoCaller (this);
3290	AssertComRCReturnRC (autoCaller.rc());
3291
3292	AutoLock alock (this);
3293
3294	/* wait for state dependants to drop to zero */
3295	checkStateDependencies (alock);
3296
3297	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
3298
3299	if (!mData->mAccessible)
3300	{
3301	/* A special case: the machine is not accessible. */
3302
3303	/* inaccessible machines can only be unregistered */
3304	AssertReturn (!aRegistered, E_FAIL);
3305
3306	/* Uninitialize ourselves here because currently there may be no
3307	* unregistered that are inaccessible (this state combination is not
3308	* supported). Note releasing the caller and leaving the lock before
3309	* calling uninit() */
3310
3311	alock.leave();
3312	autoCaller.release();
3313
3314	uninit();
3315
3316	return S_OK;
3317	}
3318
3319	AssertReturn (autoCaller.state() == Ready, E_FAIL);
3320
3321	if (aRegistered)
3322	{
3323	if (mData->mRegistered)
3324	return setError (E_FAIL,
3325	tr ("The machine '%ls' with UUID {%s} is already registered"),
3326	mUserData->mName.raw(),
3327	mData->mUuid.toString().raw());
3328	}
3329	else
3330	{
3331	if (mData->mMachineState == MachineState_Saved)
3332	return setError (E_FAIL,
3333	tr ("Cannot unregister the machine '%ls' because it "
3334	"is in the Saved state"),
3335	mUserData->mName.raw());
3336
3337	size_t snapshotCount = 0;
3338	if (mData->mFirstSnapshot)
3339	snapshotCount = mData->mFirstSnapshot->descendantCount() + 1;
3340	if (snapshotCount)
3341	return setError (E_FAIL,
3342	tr ("Cannot unregister the machine '%ls' because it "
3343	"has %d snapshots"),
3344	mUserData->mName.raw(), snapshotCount);
3345
3346	if (mData->mSession.mState != SessionState_SessionClosed)
3347	return setError (E_FAIL,
3348	tr ("Cannot unregister the machine '%ls' because it has an "
3349	"open session"),
3350	mUserData->mName.raw());
3351
3352	if (mHDData->mHDAttachments.size() != 0)
3353	return setError (E_FAIL,
3354	tr ("Cannot unregister the machine '%ls' because it "
3355	"has %d hard disks attached"),
3356	mUserData->mName.raw(), mHDData->mHDAttachments.size());
3357	}
3358
3359	/* Ensure the settings are saved. If we are going to be registered and
3360	* isConfigLocked() is FALSE then it means that no config file exists yet,
3361	* so create it. */
3362	if (isModified() \|\| (aRegistered && !isConfigLocked()))
3363	{
3364	HRESULT rc = saveSettings();
3365	CheckComRCReturnRC (rc);
3366	}
3367
3368	mData->mRegistered = aRegistered;
3369
3370	/* inform the USB proxy about all attached/detached USB filters */
3371	mUSBController->onMachineRegistered (aRegistered);
3372
3373	return S_OK;
3374	}
3375
3376	/**
3377	* Increases the number of objects dependent on the machine state or on the
3378	* registered state. Guarantees that these two states will not change at
3379	* least until #releaseStateDependency() is called.
3380	*
3381	* Depending on the @a aDepType value, additional state checks may be
3382	* made. These checks will set extended error info on failure. See
3383	* #checkStateDependency() for more info.
3384	*
3385	* If this method returns a failure, the dependency is not added and the
3386	* caller is not allowed to rely on any particular machine state or
3387	* registration state value and may return the failed result code to the
3388	* upper level.
3389	*
3390	* @param aDepType Dependency type to add.
3391	* @param aState Current machine state (NULL if not interested).
3392	* @param aRegistered Current registered state (NULL if not interested).
3393	*/
3394	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
3395	MachineState_T aState / = NULL */,
3396	BOOL aRegistered / = NULL */)
3397	{
3398	AutoCaller autoCaller (this);
3399	AssertComRCReturnRC (autoCaller.rc());
3400
3401	AutoLock alock (this);
3402
3403	if (mData->mWaitingStateDeps && mData->mMachineStateDeps == 0)
3404	{
3405	/* checkStateDependencies() is at the point after RTSemEventWait() but
3406	* before entering the lock. Report an error. It would be better to
3407	* leave the lock now and re-schedule ourselves, but we don't have a
3408	* framework that can guarantee such a behavior in 100% cases. */
3409
3410	AssertFailed(); /* <-- this is just to see how often it can happen */
3411
3412	return setError (E_ACCESSDENIED,
3413	tr ("The machine is busy: state transition is in progress. "
3414	"Retry the operation (state is %d)"),
3415	mData->mMachineState);
3416	}
3417
3418	HRESULT rc = checkStateDependency (aDepType);
3419	CheckComRCReturnRC (rc);
3420
3421	if (aState)
3422	*aState = mData->mMachineState;
3423	if (aRegistered)
3424	*aRegistered = mData->mRegistered;
3425
3426	++ mData->mMachineStateDeps;
3427
3428	return S_OK;
3429	}
3430
3431	/**
3432	* Decreases the number of objects dependent on the machine state.
3433	* Must always complete the #addStateDependency() call after the state
3434	* dependency no more necessary.
3435	*/
3436	void Machine::releaseStateDependency()
3437	{
3438	AutoCaller autoCaller (this);
3439	AssertComRCReturnVoid (autoCaller.rc());
3440
3441	AutoLock alock (this);
3442
3443	AssertReturnVoid (mData->mMachineStateDeps > 0);
3444	-- mData->mMachineStateDeps;
3445
3446	if (mData->mMachineStateDeps == 0 &&
3447	mData->mZeroMachineStateDepsSem != NIL_RTSEMEVENT)
3448	{
3449	/* inform checkStateDependencies() that there are no more deps */
3450	RTSemEventSignal (mData->mZeroMachineStateDepsSem);
3451	}
3452	}
3453
3454	// protected methods
3455	/////////////////////////////////////////////////////////////////////////////
3456
3457	/**
3458	* Performs machine state checks based on the @a aDepType value. If a check
3459	* fails, this method will set extended error info, otherwise it will return
3460	* S_OK. It is supposed, that on failure, the caller will immedieately return
3461	* the return value of this method to the upper level.
3462	*
3463	* When @a aDepType is AnyStateDep, this method always returns S_OK.
3464	*
3465	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
3466	* current state of this machine object allows to change settings of the
3467	* machine (i.e. the machine is not registered, or registered but not running
3468	* and not saved). It is useful to call this method from Machine setters
3469	* before performing any change.
3470	*
3471	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
3472	* as for MutableStateDep except that if the machine is saved, S_OK is also
3473	* returned. This is useful in setters which allow changing machine
3474	* properties when it is in the saved state.
3475	*
3476	* @param aDepType Dependency type to check.
3477	*
3478	* @note External classes should use #addStateDependency() and
3479	* #releaseStateDependency() methods or the smart AutoStateDependency
3480	* template.
3481	*
3482	* @note This method must be called from under this object's lock.
3483	*/
3484	HRESULT Machine::checkStateDependency (StateDependency aDepType)
3485	{
3486	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
3487
3488	switch (aDepType)
3489	{
3490	case AnyStateDep:
3491	{
3492	break;
3493	}
3494	case MutableStateDep:
3495	{
3496	if (mData->mRegistered &&
3497	(mType != IsSessionMachine \|\|
3498	mData->mMachineState > MachineState_Paused \|\|
3499	mData->mMachineState == MachineState_Saved))
3500	return setError (E_ACCESSDENIED,
3501	tr ("The machine is not mutable (state is %d)"),
3502	mData->mMachineState);
3503	break;
3504	}
3505	case MutableOrSavedStateDep:
3506	{
3507	if (mData->mRegistered &&
3508	(mType != IsSessionMachine \|\|
3509	mData->mMachineState > MachineState_Paused))
3510	return setError (E_ACCESSDENIED,
3511	tr ("The machine is not mutable (state is %d)"),
3512	mData->mMachineState);
3513	break;
3514	}
3515	}
3516
3517	return S_OK;
3518	}
3519
3520	/**
3521	* Helper to initialize all associated child objects
3522	* and allocate data structures.
3523	*
3524	* This method must be called as a part of the object's initialization
3525	* procedure (usually done in the #init() method).
3526	*
3527	* @note Must be called only from #init() or from #registeredInit().
3528	*/
3529	HRESULT Machine::initDataAndChildObjects()
3530	{
3531	AutoCaller autoCaller (this);
3532	AssertComRCReturnRC (autoCaller.rc());
3533	AssertComRCReturn (autoCaller.state() == InInit \|\|
3534	autoCaller.state() == Limited, E_FAIL);
3535
3536	/* allocate data structures */
3537	mSSData.allocate();
3538	mUserData.allocate();
3539	mHWData.allocate();
3540	mHDData.allocate();
3541
3542	/* initialize mOSTypeId */
3543	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
3544
3545	/* create associated BIOS settings object */
3546	unconst (mBIOSSettings).createObject();
3547	mBIOSSettings->init (this);
3548
3549	#ifdef VBOX_VRDP
3550	/* create an associated VRDPServer object (default is disabled) */
3551	unconst (mVRDPServer).createObject();
3552	mVRDPServer->init (this);
3553	#endif
3554
3555	/* create an associated DVD drive object */
3556	unconst (mDVDDrive).createObject();
3557	mDVDDrive->init (this);
3558
3559	/* create an associated floppy drive object */
3560	unconst (mFloppyDrive).createObject();
3561	mFloppyDrive->init (this);
3562
3563	/* create associated serial port objects */
3564	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
3565	{
3566	unconst (mSerialPorts [slot]).createObject();
3567	mSerialPorts [slot]->init (this, slot);
3568	}
3569
3570	/* create associated parallel port objects */
3571	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
3572	{
3573	unconst (mParallelPorts [slot]).createObject();
3574	mParallelPorts [slot]->init (this, slot);
3575	}
3576
3577	/* create the audio adapter object (always present, default is disabled) */
3578	unconst (mAudioAdapter).createObject();
3579	mAudioAdapter->init (this);
3580
3581	/* create the USB controller object (always present, default is disabled) */
3582	unconst (mUSBController).createObject();
3583	mUSBController->init (this);
3584
3585	/* create associated network adapter objects */
3586	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
3587	{
3588	unconst (mNetworkAdapters [slot]).createObject();
3589	mNetworkAdapters [slot]->init (this, slot);
3590	}
3591
3592	return S_OK;
3593	}
3594
3595	/**
3596	* Helper to uninitialize all associated child objects
3597	* and to free all data structures.
3598	*
3599	* This method must be called as a part of the object's uninitialization
3600	* procedure (usually done in the #uninit() method).
3601	*
3602	* @note Must be called only from #uninit() or from #registeredInit().
3603	*/
3604	void Machine::uninitDataAndChildObjects()
3605	{
3606	AutoCaller autoCaller (this);
3607	AssertComRCReturnVoid (autoCaller.rc());
3608	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
3609	autoCaller.state() == Limited);
3610
3611	/* uninit all children using addDependentChild()/removeDependentChild()
3612	* in their init()/uninit() methods */
3613	uninitDependentChildren();
3614
3615	/* tell all our other child objects we've been uninitialized */
3616
3617	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
3618	{
3619	if (mNetworkAdapters [slot])
3620	{
3621	mNetworkAdapters [slot]->uninit();
3622	unconst (mNetworkAdapters [slot]).setNull();
3623	}
3624	}
3625
3626	if (mUSBController)
3627	{
3628	mUSBController->uninit();
3629	unconst (mUSBController).setNull();
3630	}
3631
3632	if (mAudioAdapter)
3633	{
3634	mAudioAdapter->uninit();
3635	unconst (mAudioAdapter).setNull();
3636	}
3637
3638	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
3639	{
3640	if (mParallelPorts [slot])
3641	{
3642	mParallelPorts [slot]->uninit();
3643	unconst (mParallelPorts [slot]).setNull();
3644	}
3645	}
3646
3647	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
3648	{
3649	if (mSerialPorts [slot])
3650	{
3651	mSerialPorts [slot]->uninit();
3652	unconst (mSerialPorts [slot]).setNull();
3653	}
3654	}
3655
3656	if (mFloppyDrive)
3657	{
3658	mFloppyDrive->uninit();
3659	unconst (mFloppyDrive).setNull();
3660	}
3661
3662	if (mDVDDrive)
3663	{
3664	mDVDDrive->uninit();
3665	unconst (mDVDDrive).setNull();
3666	}
3667
3668	#ifdef VBOX_VRDP
3669	if (mVRDPServer)
3670	{
3671	mVRDPServer->uninit();
3672	unconst (mVRDPServer).setNull();
3673	}
3674	#endif
3675
3676	if (mBIOSSettings)
3677	{
3678	mBIOSSettings->uninit();
3679	unconst (mBIOSSettings).setNull();
3680	}
3681
3682	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
3683	* instance is uninitialized; SessionMachine instances refer to real
3684	* Machine hard disks). This is necessary for a clean re-initialization of
3685	* the VM after successfully re-checking the accessibility state. Note
3686	* that in case of normal Machine or SnapshotMachine uninitialization (as
3687	* a result of unregistering or discarding the snapshot), outdated hard
3688	* disk attachments will already be uninitialized and deleted, so this
3689	* code will not affect them. */
3690	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
3691	{
3692	for (HDData::HDAttachmentList::const_iterator it =
3693	mHDData->mHDAttachments.begin();
3694	it != mHDData->mHDAttachments.end();
3695	++ it)
3696	{
3697	(*it)->hardDisk()->setMachineId (Guid());
3698	}
3699	}
3700
3701	if (mType == IsMachine)
3702	{
3703	/* reset some important fields of mData */
3704	mData->mCurrentSnapshot.setNull();
3705	mData->mFirstSnapshot.setNull();
3706	}
3707
3708	/* free data structures (the essential mData structure is not freed here
3709	* since it may be still in use) */
3710	mHDData.free();
3711	mHWData.free();
3712	mUserData.free();
3713	mSSData.free();
3714	}
3715
3716
3717	/**
3718	* Chhecks that there are no state dependants. If necessary, waits for the
3719	* number of dependants to drop to zero. Must be called from under
3720	* this object's lock.
3721	*
3722	* @param aLock This object's lock.
3723	*
3724	* @note This method may leave the object lock during its execution!
3725	*/
3726	void Machine::checkStateDependencies (AutoLock &aLock)
3727	{
3728	AssertReturnVoid (isLockedOnCurrentThread());
3729	AssertReturnVoid (aLock.belongsTo (this));
3730
3731	/* Wait for all state dependants if necessary */
3732	if (mData->mMachineStateDeps > 0)
3733	{
3734	/* lazy creation */
3735	if (mData->mZeroMachineStateDepsSem == NIL_RTSEMEVENT)
3736	RTSemEventCreate (&mData->mZeroMachineStateDepsSem);
3737
3738	LogFlowThisFunc (("Waiting for state deps (%d) to drop to zero...\n",
3739	mData->mMachineStateDeps));
3740
3741	mData->mWaitingStateDeps = TRUE;
3742
3743	aLock.leave();
3744
3745	RTSemEventWait (mData->mZeroMachineStateDepsSem, RT_INDEFINITE_WAIT);
3746
3747	aLock.enter();
3748
3749	mData->mWaitingStateDeps = FALSE;
3750	}
3751	}
3752
3753	/**
3754	* Helper to change the machine state.
3755	*
3756	* @note Locks this object for writing.
3757	*/
3758	HRESULT Machine::setMachineState (MachineState_T aMachineState)
3759	{
3760	LogFlowThisFuncEnter();
3761	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
3762
3763	AutoCaller autoCaller (this);
3764	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3765
3766	AutoLock alock (this);
3767
3768	/* wait for state dependants to drop to zero */
3769	/// @todo it may be potentially unsafe to leave the lock here as
3770	// the below method does. Needs some thinking. The easiest solution may
3771	// be to provide a separate mutex for mMachineState and mRegistered.
3772	checkStateDependencies (alock);
3773
3774	if (mData->mMachineState != aMachineState)
3775	{
3776	mData->mMachineState = aMachineState;
3777
3778	RTTimeNow (&mData->mLastStateChange);
3779
3780	mParent->onMachineStateChange (mData->mUuid, aMachineState);
3781	}
3782
3783	LogFlowThisFuncLeave();
3784	return S_OK;
3785	}
3786
3787	/**
3788	* Searches for a shared folder with the given logical name
3789	* in the collection of shared folders.
3790	*
3791	* @param aName logical name of the shared folder
3792	* @param aSharedFolder where to return the found object
3793	* @param aSetError whether to set the error info if the folder is
3794	* not found
3795	* @return
3796	* S_OK when found or E_INVALIDARG when not found
3797	*
3798	* @note
3799	* must be called from under the object's lock!
3800	*/
3801	HRESULT Machine::findSharedFolder (const BSTR aName,
3802	ComObjPtr <SharedFolder> &aSharedFolder,
3803	bool aSetError /* = false */)
3804	{
3805	bool found = false;
3806	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
3807	!found && it != mHWData->mSharedFolders.end();
3808	++ it)
3809	{
3810	AutoLock alock (*it);
3811	found = (*it)->name() == aName;
3812	if (found)
3813	aSharedFolder = *it;
3814	}
3815
3816	HRESULT rc = found ? S_OK : E_INVALIDARG;
3817
3818	if (aSetError && !found)
3819	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
3820
3821	return rc;
3822	}
3823
3824	/**
3825	* Loads all the VM settings by walking down the <Machine> node.
3826	*
3827	* @param aRegistered true when the machine is being loaded on VirtualBox
3828	* startup
3829	*
3830	* @note This method is intended to be called only from init(), so it assumes
3831	* all machine data fields have appropriate default values when it is called.
3832	*
3833	* @note Doesn't lock any objects.
3834	*/
3835	HRESULT Machine::loadSettings (bool aRegistered)
3836	{
3837	LogFlowThisFuncEnter();
3838	AssertReturn (mType == IsMachine, E_FAIL);
3839
3840	AutoCaller autoCaller (this);
3841	AssertReturn (autoCaller.state() == InInit, E_FAIL);
3842
3843	HRESULT rc = S_OK;
3844
3845	try
3846	{
3847	using namespace settings;
3848
3849	File file (File::Read, mData->mHandleCfgFile,
3850	Utf8Str (mData->mConfigFileFull));
3851	XmlTreeBackend tree;
3852
3853	rc = VirtualBox::loadSettingsTree_FirstTime (tree, file);
3854	CheckComRCThrowRC (rc);
3855
3856	Key machineNode = tree.rootKey().key ("Machine");
3857
3858	/* uuid (required) */
3859	Guid id = machineNode.value <Guid> ("uuid");
3860
3861	/* If the stored UUID is not empty, it means the registered machine
3862	* is being loaded. Compare the loaded UUID with the stored one taken
3863	* from the global registry. */
3864	if (!mData->mUuid.isEmpty())
3865	{
3866	if (mData->mUuid != id)
3867	{
3868	throw setError (E_FAIL,
3869	tr ("Machine UUID {%Vuuid} in '%ls' doesn't match its "
3870	"UUID {%s} in the registry file '%ls'"),
3871	id.raw(), mData->mConfigFileFull.raw(),
3872	mData->mUuid.toString().raw(),
3873	mParent->settingsFileName().raw());
3874	}
3875	}
3876	else
3877	unconst (mData->mUuid) = id;
3878
3879	/* name (required) */
3880	mUserData->mName = machineNode.stringValue ("name");
3881
3882	/* nameSync (optional, default is true) */
3883	mUserData->mNameSync = machineNode.value <bool> ("nameSync");
3884
3885	/* Description (optional, default is null) */
3886	{
3887	Key descNode = machineNode.findKey ("Description");
3888	if (!descNode.isNull())
3889	mUserData->mDescription = descNode.keyStringValue();
3890	else
3891	mUserData->mDescription.setNull();
3892	}
3893
3894	/* OSType (required) */
3895	{
3896	mUserData->mOSTypeId = machineNode.stringValue ("OSType");
3897
3898	/* look up the object by Id to check it is valid */
3899	ComPtr <IGuestOSType> guestOSType;
3900	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
3901	guestOSType.asOutParam());
3902	CheckComRCThrowRC (rc);
3903	}
3904
3905	/* stateFile (optional) */
3906	{
3907	Bstr stateFilePath = machineNode.stringValue ("stateFile");
3908	if (stateFilePath)
3909	{
3910	Utf8Str stateFilePathFull = stateFilePath;
3911	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
3912	if (VBOX_FAILURE (vrc))
3913	{
3914	throw setError (E_FAIL,
3915	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
3916	stateFilePath.raw(), vrc);
3917	}
3918	mSSData->mStateFilePath = stateFilePathFull;
3919	}
3920	else
3921	mSSData->mStateFilePath.setNull();
3922	}
3923
3924	/*
3925	* currentSnapshot ID (optional)
3926	*
3927	* Note that due to XML Schema constaraints, this attribute, when
3928	* present, will guaranteedly refer to an existing snapshot
3929	* definition in XML
3930	*/
3931	Guid currentSnapshotId = machineNode.valueOr <Guid> ("currentSnapshot",
3932	Guid());
3933
3934	/* snapshotFolder (optional) */
3935	{
3936	Bstr folder = machineNode.stringValue ("snapshotFolder");
3937	rc = COMSETTER(SnapshotFolder) (folder);
3938	CheckComRCThrowRC (rc);
3939	}
3940
3941	/* currentStateModified (optional, default is true) */
3942	mData->mCurrentStateModified = machineNode.value <bool> ("currentStateModified");
3943
3944	/* lastStateChange (optional, for compatiblity) */
3945	{
3946	/// @todo (dmik) until lastStateChange is the required attribute,
3947	// we simply set it to the current time if missing in the config
3948	RTTIMESPEC now;
3949	RTTimeNow (&now);
3950	mData->mLastStateChange =
3951	machineNode.valueOr <RTTIMESPEC> ("lastStateChange", now);
3952	}
3953
3954	/* aborted (optional, default is false) */
3955	bool aborted = machineNode.value <bool> ("aborted");
3956
3957	/*
3958	* note: all mUserData members must be assigned prior this point because
3959	* we need to commit changes in order to let mUserData be shared by all
3960	* snapshot machine instances.
3961	*/
3962	mUserData.commitCopy();
3963
3964	/* Snapshot node (optional) */
3965	{
3966	Key snapshotNode = machineNode.findKey ("Snapshot");
3967	if (!snapshotNode.isNull())
3968	{
3969	/* read all snapshots recursively */
3970	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
3971	CheckComRCThrowRC (rc);
3972	}
3973	}
3974
3975	/* Hardware node (required) */
3976	rc = loadHardware (machineNode.key ("Hardware"));
3977	CheckComRCThrowRC (rc);
3978
3979	/* HardDiskAttachments node (required) */
3980	rc = loadHardDisks (machineNode.key ("HardDiskAttachments"), aRegistered);
3981	CheckComRCThrowRC (rc);
3982
3983	/*
3984	* NOTE: the assignment below must be the last thing to do,
3985	* otherwise it will be not possible to change the settings
3986	* somewehere in the code above because all setters will be
3987	* blocked by checkStateDependency (MutableStateDep).
3988	*/
3989
3990	/* set the machine state to Aborted or Saved when appropriate */
3991	if (aborted)
3992	{
3993	Assert (!mSSData->mStateFilePath);
3994	mSSData->mStateFilePath.setNull();
3995
3996	/* no need to use setMachineState() during init() */
3997	mData->mMachineState = MachineState_Aborted;
3998	}
3999	else if (mSSData->mStateFilePath)
4000	{
4001	/* no need to use setMachineState() during init() */
4002	mData->mMachineState = MachineState_Saved;
4003	}
4004	}
4005	catch (HRESULT err)
4006	{
4007	/* we assume that error info is set by the thrower */
4008	rc = err;
4009	}
4010	catch (...)
4011	{
4012	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
4013	}
4014
4015	LogFlowThisFuncLeave();
4016	return rc;
4017	}
4018
4019	/**
4020	* Recursively loads all snapshots starting from the given.
4021	*
4022	* @param aNode <Snapshot> node.
4023	* @param aCurSnapshotId Current snapshot ID from the settings file.
4024	* @param aParentSnapshot Parent snapshot.
4025	*/
4026	HRESULT Machine::loadSnapshot (const settings::Key &aNode,
4027	const Guid &aCurSnapshotId,
4028	Snapshot *aParentSnapshot)
4029	{
4030	using namespace settings;
4031
4032	AssertReturn (!aNode.isNull(), E_INVALIDARG);
4033	AssertReturn (mType == IsMachine, E_FAIL);
4034
4035	/* create a snapshot machine object */
4036	ComObjPtr <SnapshotMachine> snapshotMachine;
4037	snapshotMachine.createObject();
4038
4039	HRESULT rc = S_OK;
4040
4041	/* required */
4042	Guid uuid = aNode.value <Guid> ("uuid");
4043
4044	{
4045	/* optional */
4046	Bstr stateFilePath = aNode.stringValue ("stateFile");
4047	if (stateFilePath)
4048	{
4049	Utf8Str stateFilePathFull = stateFilePath;
4050	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4051	if (VBOX_FAILURE (vrc))
4052	return setError (E_FAIL,
4053	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
4054	stateFilePath.raw(), vrc);
4055
4056	stateFilePath = stateFilePathFull;
4057	}
4058
4059	/* Hardware node (required) */
4060	Key hardwareNode = aNode.key ("Hardware");
4061
4062	/* HardDiskAttachments node (required) */
4063	Key hdasNode = aNode.key ("HardDiskAttachments");
4064
4065	/* initialize the snapshot machine */
4066	rc = snapshotMachine->init (this, hardwareNode, hdasNode,
4067	uuid, stateFilePath);
4068	CheckComRCReturnRC (rc);
4069	}
4070
4071	/* create a snapshot object */
4072	ComObjPtr <Snapshot> snapshot;
4073	snapshot.createObject();
4074
4075	{
4076	/* required */
4077	Bstr name = aNode.stringValue ("name");
4078
4079	/* required */
4080	RTTIMESPEC timeStamp = aNode.value <RTTIMESPEC> ("timeStamp");
4081
4082	/* optional */
4083	Bstr description;
4084	{
4085	Key descNode = aNode.findKey ("Description");
4086	if (!descNode.isNull())
4087	description = descNode.keyStringValue();
4088	}
4089
4090	/* initialize the snapshot */
4091	rc = snapshot->init (uuid, name, description, timeStamp,
4092	snapshotMachine, aParentSnapshot);
4093	CheckComRCReturnRC (rc);
4094	}
4095
4096	/* memorize the first snapshot if necessary */
4097	if (!mData->mFirstSnapshot)
4098	mData->mFirstSnapshot = snapshot;
4099
4100	/* memorize the current snapshot when appropriate */
4101	if (!mData->mCurrentSnapshot && snapshot->data().mId == aCurSnapshotId)
4102	mData->mCurrentSnapshot = snapshot;
4103
4104	/* Snapshots node (optional) */
4105	{
4106	Key snapshotsNode = aNode.findKey ("Snapshots");
4107	if (!snapshotsNode.isNull())
4108	{
4109	Key::List children = snapshotsNode.keys ("Snapshot");
4110	for (Key::List::const_iterator it = children.begin();
4111	it != children.end(); ++ it)
4112	{
4113	rc = loadSnapshot ((*it), aCurSnapshotId, snapshot);
4114	CheckComRCBreakRC (rc);
4115	}
4116	}
4117	}
4118
4119	return rc;
4120	}
4121
4122	/**
4123	* @param aNode <Hardware> node.
4124	*/
4125	HRESULT Machine::loadHardware (const settings::Key &aNode)
4126	{
4127	using namespace settings;
4128
4129	AssertReturn (!aNode.isNull(), E_INVALIDARG);
4130	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
4131
4132	HRESULT rc = S_OK;
4133
4134	/* CPU node (currently not required) */
4135	{
4136	/* default value in case the node is not there */
4137	mHWData->mHWVirtExEnabled = TriStateBool_Default;
4138
4139	Key cpuNode = aNode.findKey ("CPU");
4140	if (!cpuNode.isNull())
4141	{
4142	Key hwVirtExNode = cpuNode.key ("HardwareVirtEx");
4143	if (!hwVirtExNode.isNull())
4144	{
4145	const char *enabled = hwVirtExNode.stringValue ("enabled");
4146	if (strcmp (enabled, "false") == 0)
4147	mHWData->mHWVirtExEnabled = TriStateBool_False;
4148	else if (strcmp (enabled, "true") == 0)
4149	mHWData->mHWVirtExEnabled = TriStateBool_True;
4150	else
4151	mHWData->mHWVirtExEnabled = TriStateBool_Default;
4152	}
4153	}
4154	}
4155
4156	/* Memory node (required) */
4157	{
4158	Key memoryNode = aNode.key ("Memory");
4159
4160	mHWData->mMemorySize = memoryNode.value <ULONG> ("RAMSize");
4161	}
4162
4163	/* Boot node (required) */
4164	{
4165	/* reset all boot order positions to NoDevice */
4166	for (size_t i = 0; i < ELEMENTS (mHWData->mBootOrder); i++)
4167	mHWData->mBootOrder [i] = DeviceType_NoDevice;
4168
4169	Key bootNode = aNode.key ("Boot");
4170
4171	Key::List orderNodes = bootNode.keys ("Order");
4172	for (Key::List::const_iterator it = orderNodes.begin();
4173	it != orderNodes.end(); ++ it)
4174	{
4175	/* position (required) */
4176	/* position unicity is guaranteed by XML Schema */
4177	uint32_t position = (*it).value <uint32_t> ("position");
4178	-- position;
4179	Assert (position < ELEMENTS (mHWData->mBootOrder));
4180
4181	/* device (required) */
4182	const char device = (it).stringValue ("device");
4183	if (strcmp (device, "None") == 0)
4184	mHWData->mBootOrder [position] = DeviceType_NoDevice;
4185	else if (strcmp (device, "Floppy") == 0)
4186	mHWData->mBootOrder [position] = DeviceType_FloppyDevice;
4187	else if (strcmp (device, "DVD") == 0)
4188	mHWData->mBootOrder [position] = DeviceType_DVDDevice;
4189	else if (strcmp (device, "HardDisk") == 0)
4190	mHWData->mBootOrder [position] = DeviceType_HardDiskDevice;
4191	else if (strcmp (device, "Network") == 0)
4192	mHWData->mBootOrder [position] = DeviceType_NetworkDevice;
4193	else
4194	ComAssertMsgFailed (("Invalid device: %s\n", device));
4195	}
4196	}
4197
4198	/* Display node (required) */
4199	{
4200	Key displayNode = aNode.key ("Display");
4201
4202	mHWData->mVRAMSize = displayNode.value <ULONG> ("VRAMSize");
4203	mHWData->mMonitorCount = displayNode.value <ULONG> ("MonitorCount");
4204	}
4205
4206	#ifdef VBOX_VRDP
4207	/* RemoteDisplay */
4208	rc = mVRDPServer->loadSettings (aNode);
4209	CheckComRCReturnRC (rc);
4210	#endif
4211
4212	/* BIOS */
4213	rc = mBIOSSettings->loadSettings (aNode);
4214	CheckComRCReturnRC (rc);
4215
4216	/* DVD drive */
4217	rc = mDVDDrive->loadSettings (aNode);
4218	CheckComRCReturnRC (rc);
4219
4220	/* Floppy drive */
4221	rc = mFloppyDrive->loadSettings (aNode);
4222	CheckComRCReturnRC (rc);
4223
4224	/* USB Controller */
4225	rc = mUSBController->loadSettings (aNode);
4226	CheckComRCReturnRC (rc);
4227
4228	/* Network node (required) */
4229	{
4230	/* we assume that all network adapters are initially disabled
4231	* and detached */
4232
4233	Key networkNode = aNode.key ("Network");
4234
4235	rc = S_OK;
4236
4237	Key::List adapters = networkNode.keys ("Adapter");
4238	for (Key::List::const_iterator it = adapters.begin();
4239	it != adapters.end(); ++ it)
4240	{
4241	/* slot number (required) */
4242	/* slot unicity is guaranteed by XML Schema */
4243	uint32_t slot = (*it).value <uint32_t> ("slot");
4244	AssertBreakVoid (slot < ELEMENTS (mNetworkAdapters));
4245
4246	rc = mNetworkAdapters [slot]->loadSettings (*it);
4247	CheckComRCReturnRC (rc);
4248	}
4249	}
4250
4251	/* Serial node (optional) */
4252	{
4253	Key serialNode = aNode.findKey ("Uart");
4254	if (!serialNode.isNull())
4255	{
4256	rc = S_OK;
4257
4258	Key::List ports = serialNode.keys ("Port");
4259	for (Key::List::const_iterator it = ports.begin();
4260	it != ports.end(); ++ it)
4261	{
4262	/* slot number (required) */
4263	/* slot unicity is guaranteed by XML Schema */
4264	uint32_t slot = (*it).value <uint32_t> ("slot");
4265	AssertBreakVoid (slot < ELEMENTS (mSerialPorts));
4266
4267	rc = mSerialPorts [slot]->loadSettings (*it);
4268	CheckComRCReturnRC (rc);
4269	}
4270	}
4271	}
4272
4273	/* Parallel node (optional) */
4274	{
4275	Key parallelNode = aNode.findKey ("Lpt");
4276	if (!parallelNode.isNull())
4277	{
4278	rc = S_OK;
4279
4280	Key::List ports = parallelNode.keys ("Port");
4281	for (Key::List::const_iterator it = ports.begin();
4282	it != ports.end(); ++ it)
4283	{
4284	/* slot number (required) */
4285	/* slot unicity is guaranteed by XML Schema */
4286	uint32_t slot = (*it).value <uint32_t> ("slot");
4287	AssertBreakVoid (slot < ELEMENTS (mSerialPorts));
4288
4289	rc = mParallelPorts [slot]->loadSettings (*it);
4290	CheckComRCReturnRC (rc);
4291	}
4292	}
4293	}
4294
4295	/* AudioAdapter */
4296	rc = mAudioAdapter->loadSettings (aNode);
4297	CheckComRCReturnRC (rc);
4298
4299	/* Shared folders (optional) */
4300	/// @todo (dmik) make required on next format change!
4301	{
4302	Key sharedFoldersNode = aNode.findKey ("SharedFolders");
4303	if (!sharedFoldersNode.isNull())
4304	{
4305	rc = S_OK;
4306
4307	Key::List folders = sharedFoldersNode.keys ("SharedFolder");
4308	for (Key::List::const_iterator it = folders.begin();
4309	it != folders.end(); ++ it)
4310	{
4311	/* folder logical name (required) */
4312	Bstr name = (*it).stringValue ("name");
4313	/* folder host path (required) */
4314	Bstr hostPath = (*it).stringValue ("hostPath");
4315
4316	rc = CreateSharedFolder (name, hostPath);
4317	CheckComRCReturnRC (rc);
4318	}
4319	}
4320	}
4321
4322	/* Clipboard node (currently not required) */
4323	/// @todo (dmik) make required on next format change!
4324	{
4325	/* default value in case if the node is not there */
4326	mHWData->mClipboardMode = ClipboardMode_ClipDisabled;
4327
4328	Key clipNode = aNode.findKey ("Clipboard");
4329	if (!clipNode.isNull())
4330	{
4331	const char *mode = clipNode.stringValue ("mode");
4332	if (strcmp (mode, "Disabled") == 0)
4333	mHWData->mClipboardMode = ClipboardMode_ClipDisabled;
4334	else if (strcmp (mode, "HostToGuest") == 0)
4335	mHWData->mClipboardMode = ClipboardMode_ClipHostToGuest;
4336	else if (strcmp (mode, "GuestToHost") == 0)
4337	mHWData->mClipboardMode = ClipboardMode_ClipGuestToHost;
4338	else if (strcmp (mode, "Bidirectional") == 0)
4339	mHWData->mClipboardMode = ClipboardMode_ClipBidirectional;
4340	else
4341	AssertMsgFailed (("Invalid clipboard mode '%s'\n", mode));
4342	}
4343	}
4344
4345	/* Guest node (optional) */
4346	/// @todo (dmik) make required on next format change and change attribute
4347	/// naming!
4348	{
4349	Key guestNode = aNode.findKey ("Guest");
4350	if (!guestNode.isNull())
4351	{
4352	/* optional, defaults to 0) */
4353	mHWData->mMemoryBalloonSize =
4354	guestNode.value <ULONG> ("MemoryBalloonSize");
4355	/* optional, defaults to 0) */
4356	mHWData->mStatisticsUpdateInterval =
4357	guestNode.value <ULONG> ("StatisticsUpdateInterval");
4358	}
4359	}
4360
4361	AssertComRC (rc);
4362	return rc;
4363	}
4364
4365	/**
4366	* @param aNode <HardDiskAttachments> node.
4367	* @param aRegistered true when the machine is being loaded on VirtualBox
4368	* startup, or when a snapshot is being loaded (wchich
4369	* currently can happen on startup only)
4370	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
4371	*/
4372	HRESULT Machine::loadHardDisks (const settings::Key &aNode, bool aRegistered,
4373	const Guid aSnapshotId / = NULL */)
4374	{
4375	using namespace settings;
4376
4377	AssertReturn (!aNode.isNull(), E_INVALIDARG);
4378	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
4379	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
4380
4381	HRESULT rc = S_OK;
4382
4383	Key::List children = aNode.keys ("HardDiskAttachment");
4384
4385	if (!aRegistered && children.size() > 0)
4386	{
4387	/* when the machine is being loaded (opened) from a file, it cannot
4388	* have hard disks attached (this should not happen normally,
4389	* because we don't allow to attach hard disks to an unregistered
4390	* VM at all */
4391	return setError (E_FAIL,
4392	tr ("Unregistered machine '%ls' cannot have hard disks attached "
4393	"(found %d hard disk attachments)"),
4394	mUserData->mName.raw(), children.size());
4395	}
4396
4397
4398	for (Key::List::const_iterator it = children.begin();
4399	it != children.end(); ++ it)
4400	{
4401	/* hardDisk uuid (required) */
4402	Guid uuid = (*it).value <Guid> ("hardDisk");
4403	/* bus (controller) type (required) */
4404	const char bus = (it).stringValue ("bus");
4405	/* device (required) */
4406	const char device = (it).stringValue ("device");
4407
4408	/* find a hard disk by UUID */
4409	ComObjPtr <HardDisk> hd;
4410	rc = mParent->getHardDisk (uuid, hd);
4411	CheckComRCReturnRC (rc);
4412
4413	AutoLock hdLock (hd);
4414
4415	if (!hd->machineId().isEmpty())
4416	{
4417	return setError (E_FAIL,
4418	tr ("Hard disk '%ls' with UUID {%s} is already "
4419	"attached to a machine with UUID {%s} (see '%ls')"),
4420	hd->toString().raw(), uuid.toString().raw(),
4421	hd->machineId().toString().raw(),
4422	mData->mConfigFileFull.raw());
4423	}
4424
4425	if (hd->type() == HardDiskType_ImmutableHardDisk)
4426	{
4427	return setError (E_FAIL,
4428	tr ("Immutable hard disk '%ls' with UUID {%s} cannot be "
4429	"directly attached to a machine (see '%ls')"),
4430	hd->toString().raw(), uuid.toString().raw(),
4431	mData->mConfigFileFull.raw());
4432	}
4433
4434	/* attach the device */
4435	DiskControllerType_T ctl = DiskControllerType_InvalidController;
4436	LONG dev = -1;
4437
4438	if (strcmp (bus, "ide0") == 0)
4439	{
4440	ctl = DiskControllerType_IDE0Controller;
4441	if (strcmp (device, "master") == 0)
4442	dev = 0;
4443	else if (strcmp (device, "slave") == 0)
4444	dev = 1;
4445	else
4446	ComAssertMsgFailedRet (("Invalid device '%s'\n", device),
4447	E_FAIL);
4448	}
4449	else if (strcmp (bus, "ide1") == 0)
4450	{
4451	ctl = DiskControllerType_IDE1Controller;
4452	if (strcmp (device, "master") == 0)
4453	rc = setError (E_FAIL, tr("Could not attach a disk as a master "
4454	"device on the secondary controller"));
4455	else if (strcmp (device, "slave") == 0)
4456	dev = 1;
4457	else
4458	ComAssertMsgFailedRet (("Invalid device '%s'\n", device),
4459	E_FAIL);
4460	}
4461	else
4462	ComAssertMsgFailedRet (("Invalid bus '%s'\n", bus),
4463	E_FAIL);
4464
4465	ComObjPtr <HardDiskAttachment> attachment;
4466	attachment.createObject();
4467	rc = attachment->init (hd, ctl, dev, false /* aDirty */);
4468	CheckComRCBreakRC (rc);
4469
4470	/* associate the hard disk with this machine */
4471	hd->setMachineId (mData->mUuid);
4472
4473	/* associate the hard disk with the given snapshot ID */
4474	if (mType == IsSnapshotMachine)
4475	hd->setSnapshotId (*aSnapshotId);
4476
4477	mHDData->mHDAttachments.push_back (attachment);
4478	}
4479
4480	return S_OK;
4481	}
4482
4483	/**
4484	* Searches for a <Snapshot> node for the given snapshot.
4485	* If the search is successful, \a aSnapshotNode will contain the found node.
4486	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
4487	* direct child of \a aMachineNode.
4488	*
4489	* If the search fails, a failure is returned and both \a aSnapshotsNode and
4490	* \a aSnapshotNode are set to 0.
4491	*
4492	* @param aSnapshot Snapshot to search for.
4493	* @param aMachineNode <Machine> node to start from.
4494	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
4495	* (may be NULL if the caller is not interested).
4496	* @param aSnapshotNode Found <Snapshot> node.
4497	*/
4498	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, settings::Key &aMachineNode,
4499	settings::Key *aSnapshotsNode,
4500	settings::Key *aSnapshotNode)
4501	{
4502	using namespace settings;
4503
4504	AssertReturn (aSnapshot && !aMachineNode.isNull()
4505	&& aSnapshotNode != NULL, E_FAIL);
4506
4507	if (aSnapshotsNode)
4508	aSnapshotsNode->setNull();
4509	aSnapshotNode->setNull();
4510
4511	// build the full uuid path (from the top parent to the given snapshot)
4512	std::list <Guid> path;
4513	{
4514	ComObjPtr <Snapshot> parent = aSnapshot;
4515	while (parent)
4516	{
4517	path.push_front (parent->data().mId);
4518	parent = parent->parent();
4519	}
4520	}
4521
4522	Key snapshotsNode = aMachineNode;
4523	Key snapshotNode;
4524
4525	for (std::list <Guid>::const_iterator it = path.begin();
4526	it != path.end();
4527	++ it)
4528	{
4529	if (!snapshotNode.isNull())
4530	{
4531	/* proceed to the nested <Snapshots> node */
4532	snapshotsNode = snapshotNode.key ("Snapshots");
4533	snapshotNode.setNull();
4534	}
4535
4536	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
4537
4538	Key::List children = snapshotsNode.keys ("Snapshot");
4539	for (Key::List::const_iterator ch = children.begin();
4540	ch != children.end();
4541	++ ch)
4542	{
4543	Guid id = (*ch).value <Guid> ("uuid");
4544	if (id == (*it))
4545	{
4546	/* pass over to the outer loop */
4547	snapshotNode = *ch;
4548	break;
4549	}
4550	}
4551
4552	if (!snapshotNode.isNull())
4553	continue;
4554
4555	/* the next uuid is not found, no need to continue... */
4556	AssertFailedBreakVoid();
4557	}
4558
4559	// we must always succesfully find the node
4560	AssertReturn (!snapshotNode.isNull(), E_FAIL);
4561	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
4562
4563	if (aSnapshotsNode && (snapshotsNode != aMachineNode))
4564	*aSnapshotsNode = snapshotsNode;
4565	*aSnapshotNode = snapshotNode;
4566
4567	return S_OK;
4568	}
4569
4570	/**
4571	* Returns the snapshot with the given UUID or fails of no such snapshot.
4572	*
4573	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
4574	* @param aSnapshot where to return the found snapshot
4575	* @param aSetError true to set extended error info on failure
4576	*/
4577	HRESULT Machine::findSnapshot (const Guid &aId, ComObjPtr <Snapshot> &aSnapshot,
4578	bool aSetError /* = false */)
4579	{
4580	if (!mData->mFirstSnapshot)
4581	{
4582	if (aSetError)
4583	return setError (E_FAIL,
4584	tr ("This machine does not have any snapshots"));
4585	return E_FAIL;
4586	}
4587
4588	if (aId.isEmpty())
4589	aSnapshot = mData->mFirstSnapshot;
4590	else
4591	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
4592
4593	if (!aSnapshot)
4594	{
4595	if (aSetError)
4596	return setError (E_FAIL,
4597	tr ("Could not find a snapshot with UUID {%s}"),
4598	aId.toString().raw());
4599	return E_FAIL;
4600	}
4601
4602	return S_OK;
4603	}
4604
4605	/**
4606	* Returns the snapshot with the given name or fails of no such snapshot.
4607	*
4608	* @param aName snapshot name to find
4609	* @param aSnapshot where to return the found snapshot
4610	* @param aSetError true to set extended error info on failure
4611	*/
4612	HRESULT Machine::findSnapshot (const BSTR aName, ComObjPtr <Snapshot> &aSnapshot,
4613	bool aSetError /* = false */)
4614	{
4615	AssertReturn (aName, E_INVALIDARG);
4616
4617	if (!mData->mFirstSnapshot)
4618	{
4619	if (aSetError)
4620	return setError (E_FAIL,
4621	tr ("This machine does not have any snapshots"));
4622	return E_FAIL;
4623	}
4624
4625	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
4626
4627	if (!aSnapshot)
4628	{
4629	if (aSetError)
4630	return setError (E_FAIL,
4631	tr ("Could not find a snapshot named '%ls'"), aName);
4632	return E_FAIL;
4633	}
4634
4635	return S_OK;
4636	}
4637
4638	/**
4639	* Searches for an attachment that contains the given hard disk.
4640	* The hard disk must be associated with some VM and can be optionally
4641	* associated with some snapshot. If the attachment is stored in the snapshot
4642	* (i.e. the hard disk is associated with some snapshot), @a aSnapshot
4643	* will point to a non-null object on output.
4644	*
4645	* @param aHd hard disk to search an attachment for
4646	* @param aMachine where to store the hard disk's machine (can be NULL)
4647	* @param aSnapshot where to store the hard disk's snapshot (can be NULL)
4648	* @param aHda where to store the hard disk's attachment (can be NULL)
4649	*
4650	*
4651	* @note
4652	* It is assumed that the machine where the attachment is found,
4653	* is already placed to the Discarding state, when this method is called.
4654	* @note
4655	* The object returned in @a aHda is the attachment from the snapshot
4656	* machine if the hard disk is associated with the snapshot, not from the
4657	* primary machine object returned returned in @a aMachine.
4658	*/
4659	HRESULT Machine::findHardDiskAttachment (const ComObjPtr <HardDisk> &aHd,
4660	ComObjPtr <Machine> *aMachine,
4661	ComObjPtr <Snapshot> *aSnapshot,
4662	ComObjPtr <HardDiskAttachment> *aHda)
4663	{
4664	AssertReturn (!aHd.isNull(), E_INVALIDARG);
4665
4666	Guid mid = aHd->machineId();
4667	Guid sid = aHd->snapshotId();
4668
4669	AssertReturn (!mid.isEmpty(), E_INVALIDARG);
4670
4671	ComObjPtr <Machine> m;
4672	mParent->getMachine (mid, m);
4673	ComAssertRet (!m.isNull(), E_FAIL);
4674
4675	HDData::HDAttachmentList *attachments = &m->mHDData->mHDAttachments;
4676
4677	ComObjPtr <Snapshot> s;
4678	if (!sid.isEmpty())
4679	{
4680	m->findSnapshot (sid, s);
4681	ComAssertRet (!s.isNull(), E_FAIL);
4682	attachments = &s->data().mMachine->mHDData->mHDAttachments;
4683	}
4684
4685	AssertReturn (attachments, E_FAIL);
4686
4687	for (HDData::HDAttachmentList::const_iterator it = attachments->begin();
4688	it != attachments->end();
4689	++ it)
4690	{
4691	if ((*it)->hardDisk() == aHd)
4692	{
4693	if (aMachine) *aMachine = m;
4694	if (aSnapshot) *aSnapshot = s;
4695	if (aHda) aHda = (it);
4696	return S_OK;
4697	}
4698	}
4699
4700	ComAssertFailed();
4701	return E_FAIL;
4702	}
4703
4704	/**
4705	* Helper for #saveSettings. Cares about renaming the settings directory and
4706	* file if the machine name was changed and about creating a new settings file
4707	* if this is a new machine.
4708	*
4709	* @note Must be never called directly but only from #saveSettings().
4710	*
4711	* @param aRenamed receives \|true\| if the name was changed and the settings
4712	* file was renamed as a result, or \|false\| otherwise. The
4713	* value makes sense only on success.
4714	* @param aNew receives \|true\| if a virgin settings file was created.
4715	*/
4716	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
4717	{
4718	/* Note: tecnhically, mParent needs to be locked only when the machine is
4719	* registered (see prepareSaveSettings() for details) but we don't
4720	* currently differentiate it in callers of saveSettings() so we don't
4721	* make difference here too. */
4722	AssertReturn (mParent->isLockedOnCurrentThread(), E_FAIL);
4723	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
4724
4725	HRESULT rc = S_OK;
4726
4727	aRenamed = false;
4728
4729	/* if we're ready and isConfigLocked() is FALSE then it means
4730	* that no config file exists yet (we will create a virgin one) */
4731	aNew = !isConfigLocked();
4732
4733	/* attempt to rename the settings file if machine name is changed */
4734	if (mUserData->mNameSync &&
4735	mUserData.isBackedUp() &&
4736	mUserData.backedUpData()->mName != mUserData->mName)
4737	{
4738	aRenamed = true;
4739
4740	if (!aNew)
4741	{
4742	/* unlock the old config file */
4743	rc = unlockConfig();
4744	CheckComRCReturnRC (rc);
4745	}
4746
4747	bool dirRenamed = false;
4748	bool fileRenamed = false;
4749
4750	Utf8Str configFile, newConfigFile;
4751	Utf8Str configDir, newConfigDir;
4752
4753	do
4754	{
4755	int vrc = VINF_SUCCESS;
4756
4757	Utf8Str name = mUserData.backedUpData()->mName;
4758	Utf8Str newName = mUserData->mName;
4759
4760	configFile = mData->mConfigFileFull;
4761
4762	/* first, rename the directory if it matches the machine name */
4763	configDir = configFile;
4764	RTPathStripFilename (configDir.mutableRaw());
4765	newConfigDir = configDir;
4766	if (RTPathFilename (configDir) == name)
4767	{
4768	RTPathStripFilename (newConfigDir.mutableRaw());
4769	newConfigDir = Utf8StrFmt ("%s%c%s",
4770	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
4771	/* new dir and old dir cannot be equal here because of 'if'
4772	* above and because name != newName */
4773	Assert (configDir != newConfigDir);
4774	if (!aNew)
4775	{
4776	/* perform real rename only if the machine is not new */
4777	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
4778	if (VBOX_FAILURE (vrc))
4779	{
4780	rc = setError (E_FAIL,
4781	tr ("Could not rename the directory '%s' to '%s' "
4782	"to save the settings file (%Vrc)"),
4783	configDir.raw(), newConfigDir.raw(), vrc);
4784	break;
4785	}
4786	dirRenamed = true;
4787	}
4788	}
4789
4790	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
4791	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
4792
4793	/* then try to rename the settings file itself */
4794	if (newConfigFile != configFile)
4795	{
4796	/* get the path to old settings file in renamed directory */
4797	configFile = Utf8StrFmt ("%s%c%s",
4798	newConfigDir.raw(), RTPATH_DELIMITER,
4799	RTPathFilename (configFile));
4800	if (!aNew)
4801	{
4802	/* perform real rename only if the machine is not new */
4803	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
4804	if (VBOX_FAILURE (vrc))
4805	{
4806	rc = setError (E_FAIL,
4807	tr ("Could not rename the settings file '%s' to '%s' "
4808	"(%Vrc)"),
4809	configFile.raw(), newConfigFile.raw(), vrc);
4810	break;
4811	}
4812	fileRenamed = true;
4813	}
4814	}
4815
4816	/* update mConfigFileFull amd mConfigFile */
4817	Bstr oldConfigFileFull = mData->mConfigFileFull;
4818	Bstr oldConfigFile = mData->mConfigFile;
4819	mData->mConfigFileFull = newConfigFile;
4820	/* try to get the relative path for mConfigFile */
4821	Utf8Str path = newConfigFile;
4822	mParent->calculateRelativePath (path, path);
4823	mData->mConfigFile = path;
4824
4825	/* last, try to update the global settings with the new path */
4826	if (mData->mRegistered)
4827	{
4828	rc = mParent->updateSettings (configDir, newConfigDir);
4829	if (FAILED (rc))
4830	{
4831	/* revert to old values */
4832	mData->mConfigFileFull = oldConfigFileFull;
4833	mData->mConfigFile = oldConfigFile;
4834	break;
4835	}
4836	}
4837
4838	/* update the snapshot folder */
4839	path = mUserData->mSnapshotFolderFull;
4840	if (RTPathStartsWith (path, configDir))
4841	{
4842	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
4843	path.raw() + configDir.length());
4844	mUserData->mSnapshotFolderFull = path;
4845	calculateRelativePath (path, path);
4846	mUserData->mSnapshotFolder = path;
4847	}
4848
4849	/* update the saved state file path */
4850	path = mSSData->mStateFilePath;
4851	if (RTPathStartsWith (path, configDir))
4852	{
4853	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
4854	path.raw() + configDir.length());
4855	mSSData->mStateFilePath = path;
4856	}
4857
4858	/* Update saved state file paths of all online snapshots.
4859	* Note that saveSettings() will recognize name change
4860	* and will save all snapshots in this case. */
4861	if (mData->mFirstSnapshot)
4862	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
4863	newConfigDir);
4864	}
4865	while (0);
4866
4867	if (FAILED (rc))
4868	{
4869	/* silently try to rename everything back */
4870	if (fileRenamed)
4871	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
4872	if (dirRenamed)
4873	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
4874	}
4875
4876	if (!aNew)
4877	{
4878	/* lock the config again */
4879	HRESULT rc2 = lockConfig();
4880	if (SUCCEEDED (rc))
4881	rc = rc2;
4882	}
4883
4884	CheckComRCReturnRC (rc);
4885	}
4886
4887	if (aNew)
4888	{
4889	/* create a virgin config file */
4890	int vrc = VINF_SUCCESS;
4891
4892	/* ensure the settings directory exists */
4893	Utf8Str path = mData->mConfigFileFull;
4894	RTPathStripFilename (path.mutableRaw());
4895	if (!RTDirExists (path))
4896	{
4897	vrc = RTDirCreateFullPath (path, 0777);
4898	if (VBOX_FAILURE (vrc))
4899	{
4900	return setError (E_FAIL,
4901	tr ("Could not create a directory '%s' "
4902	"to save the settings file (%Vrc)"),
4903	path.raw(), vrc);
4904	}
4905	}
4906
4907	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
4908	path = Utf8Str (mData->mConfigFileFull);
4909	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
4910	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
4911	RTFILE_O_DENY_WRITE);
4912	if (VBOX_SUCCESS (vrc))
4913	{
4914	vrc = RTFileWrite (mData->mHandleCfgFile,
4915	(void *) DefaultMachineConfig,
4916	sizeof (DefaultMachineConfig), NULL);
4917	}
4918	if (VBOX_FAILURE (vrc))
4919	{
4920	mData->mHandleCfgFile = NIL_RTFILE;
4921	return setError (E_FAIL,
4922	tr ("Could not create the settings file '%s' (%Vrc)"),
4923	path.raw(), vrc);
4924	}
4925	/* we do not close the file to simulate lockConfig() */
4926	}
4927
4928	return rc;
4929	}
4930
4931	/**
4932	* Saves machine data, user data and hardware data.
4933	*
4934	* @param aMarkCurStateAsModified
4935	* If true (default), mData->mCurrentStateModified will be set to
4936	* what #isReallyModified() returns prior to saving settings to a file,
4937	* otherwise the current value of mData->mCurrentStateModified will be
4938	* saved.
4939	* @param aInformCallbacksAnyway
4940	* If true, callbacks will be informed even if #isReallyModified()
4941	* returns false. This is necessary for cases when we change machine data
4942	* diectly, not through the backup()/commit() mechanism.
4943	*
4944	* @note Must be called from under mParent write lock (sometimes needed by
4945	* #prepareSaveSettings()) and this object's write lock. Locks children for
4946	* writing. There is one exception when mParent is unused and therefore may
4947	* be left unlocked: if this machine is an unregistered one.
4948	*/
4949	HRESULT Machine::saveSettings (bool aMarkCurStateAsModified /* = true */,
4950	bool aInformCallbacksAnyway /* = false */)
4951	{
4952	LogFlowThisFuncEnter();
4953
4954	/* Note: tecnhically, mParent needs to be locked only when the machine is
4955	* registered (see prepareSaveSettings() for details) but we don't
4956	* currently differentiate it in callers of saveSettings() so we don't
4957	* make difference here too. */
4958	AssertReturn (mParent->isLockedOnCurrentThread(), E_FAIL);
4959	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
4960
4961	/// @todo (dmik) I guess we should lock all our child objects here
4962	// (such as mVRDPServer etc.) to ensure they are not changed
4963	// until completely saved to disk and committed
4964
4965	/// @todo (dmik) also, we need to delegate saving child objects' settings
4966	// to objects themselves to ensure operations 'commit + save changes'
4967	// are atomic (amd done from the object's lock so that nobody can change
4968	// settings again until completely saved).
4969
4970	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
4971
4972	bool wasModified;
4973
4974	if (aMarkCurStateAsModified)
4975	{
4976	/*
4977	* We ignore changes to user data when setting mCurrentStateModified
4978	* because the current state will not differ from the current snapshot
4979	* if only user data has been changed (user data is shared by all
4980	* snapshots).
4981	*/
4982	mData->mCurrentStateModified = isReallyModified (true /* aIgnoreUserData */);
4983	wasModified = mUserData.hasActualChanges() \|\| mData->mCurrentStateModified;
4984	}
4985	else
4986	{
4987	wasModified = isReallyModified();
4988	}
4989
4990	HRESULT rc = S_OK;
4991
4992	/* First, prepare to save settings. It will will care about renaming the
4993	* settings directory and file if the machine name was changed and about
4994	* creating a new settings file if this is a new machine. */
4995	bool isRenamed = false;
4996	bool isNew = false;
4997	rc = prepareSaveSettings (isRenamed, isNew);
4998	CheckComRCReturnRC (rc);
4999
5000	try
5001	{
5002	using namespace settings;
5003
5004	File file (File::ReadWrite, mData->mHandleCfgFile,
5005	Utf8Str (mData->mConfigFileFull));
5006	XmlTreeBackend tree;
5007
5008	/* The newly created settings file is incomplete therefore we turn off
5009	* validation. The rest is like in loadSettingsTree_ForUpdate().*/
5010	rc = VirtualBox::loadSettingsTree (tree, file,
5011	!isNew /* aValidate */,
5012	false /* aCatchLoadErrors */,
5013	false /* aAddDefaults */);
5014	CheckComRCThrowRC (rc);
5015
5016
5017	/* ask to save all snapshots when the machine name was changed since
5018	* it may affect saved state file paths for online snapshots (see
5019	* #openConfigLoader() for details) */
5020	bool updateAllSnapshots = isRenamed;
5021
5022	/* commit before saving, since it may change settings
5023	* (for example, perform fixup of lazy hard disk changes) */
5024	rc = commit();
5025	CheckComRCReturnRC (rc);
5026
5027	/* include hard disk changes to the modified flag */
5028	wasModified \|= mHDData->mHDAttachmentsChanged;
5029	if (aMarkCurStateAsModified)
5030	mData->mCurrentStateModified \|= BOOL (mHDData->mHDAttachmentsChanged);
5031
5032	Key machineNode = tree.rootKey().createKey ("Machine");
5033
5034	/* uuid (required) */
5035	Assert (!mData->mUuid.isEmpty());
5036	machineNode.setValue <Guid> ("uuid", mData->mUuid);
5037
5038	/* name (required) */
5039	Assert (!mUserData->mName.isEmpty());
5040	machineNode.setValue <Bstr> ("name", mUserData->mName);
5041
5042	/* nameSync (optional, default is true) */
5043	machineNode.setValueOr <bool> ("nameSync", !!mUserData->mNameSync, true);
5044
5045	/* Description node (optional) */
5046	if (!mUserData->mDescription.isNull())
5047	{
5048	Key descNode = machineNode.createKey ("Description");
5049	descNode.setKeyValue <Bstr> (mUserData->mDescription);
5050	}
5051	else
5052	{
5053	Key descNode = machineNode.findKey ("Description");
5054	if (!descNode.isNull())
5055	descNode.zap();
5056	}
5057
5058	/* OSType (required) */
5059	machineNode.setValue <Bstr> ("OSType", mUserData->mOSTypeId);
5060
5061	/* stateFile (optional) */
5062	if (mData->mMachineState == MachineState_Saved)
5063	{
5064	Assert (!mSSData->mStateFilePath.isEmpty());
5065	/* try to make the file name relative to the settings file dir */
5066	Utf8Str stateFilePath = mSSData->mStateFilePath;
5067	calculateRelativePath (stateFilePath, stateFilePath);
5068	machineNode.setStringValue ("stateFile", stateFilePath);
5069	}
5070	else
5071	{
5072	Assert (mSSData->mStateFilePath.isNull());
5073	machineNode.zapValue ("stateFile");
5074	}
5075
5076	/* currentSnapshot ID (optional) */
5077	if (!mData->mCurrentSnapshot.isNull())
5078	{
5079	Assert (!mData->mFirstSnapshot.isNull());
5080	machineNode.setValue <Guid> ("currentSnapshot",
5081	mData->mCurrentSnapshot->data().mId);
5082	}
5083	else
5084	{
5085	Assert (mData->mFirstSnapshot.isNull());
5086	machineNode.zapValue ("currentSnapshot");
5087	}
5088
5089	/* snapshotFolder (optional) */
5090	/// @todo use the Bstr::NullOrEmpty constant and setValueOr
5091	if (!mUserData->mSnapshotFolder.isEmpty())
5092	machineNode.setValue <Bstr> ("snapshotFolder", mUserData->mSnapshotFolder);
5093	else
5094	machineNode.zapValue ("snapshotFolder");
5095
5096	/* currentStateModified (optional, default is true) */
5097	machineNode.setValueOr <bool> ("currentStateModified",
5098	!!mData->mCurrentStateModified, true);
5099
5100	/* lastStateChange */
5101	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
5102	mData->mLastStateChange);
5103
5104	/* set the aborted attribute when appropriate, defaults to false */
5105	machineNode.setValueOr <bool> ("aborted",
5106	mData->mMachineState == MachineState_Aborted,
5107	false);
5108
5109	/* Hardware node (required) */
5110	{
5111	/* first, delete the entire node if exists */
5112	Key hwNode = machineNode.findKey ("Hardware");
5113	if (!hwNode.isNull())
5114	hwNode.zap();
5115	/* then recreate it */
5116	hwNode = machineNode.createKey ("Hardware");
5117
5118	rc = saveHardware (hwNode);
5119	CheckComRCThrowRC (rc);
5120	}
5121
5122	/* HardDiskAttachments node (required) */
5123	{
5124	/* first, delete the entire node if exists */
5125	Key hdaNode = machineNode.findKey ("HardDiskAttachments");
5126	if (!hdaNode.isNull())
5127	hdaNode.zap();
5128	/* then recreate it */
5129	hdaNode = machineNode.createKey ("HardDiskAttachments");
5130
5131	rc = saveHardDisks (hdaNode);
5132	CheckComRCThrowRC (rc);
5133	}
5134
5135	/* update all snapshots if requested */
5136	if (updateAllSnapshots)
5137	{
5138	rc = saveSnapshotSettingsWorker (machineNode, NULL,
5139	SaveSS_UpdateAllOp);
5140	CheckComRCThrowRC (rc);
5141	}
5142
5143	/* save the settings on success */
5144	rc = VirtualBox::saveSettingsTree (tree, file);
5145	CheckComRCThrowRC (rc);
5146	}
5147	catch (HRESULT err)
5148	{
5149	/* we assume that error info is set by the thrower */
5150	rc = err;
5151	}
5152	catch (...)
5153	{
5154	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5155	}
5156
5157	if (FAILED (rc))
5158	{
5159	/* backup arbitrary data item to cause #isModified() to still return
5160	* true in case of any error */
5161	mHWData.backup();
5162	}
5163
5164	if (wasModified \|\| aInformCallbacksAnyway)
5165	{
5166	/* Fire the data change event, even on failure (since we've already
5167	* committed all data). This is done only for SessionMachines because
5168	* mutable Machine instances are always not registered (i.e. private
5169	* to the client process that creates them) and thus don't need to
5170	* inform callbacks. */
5171	if (mType == IsSessionMachine)
5172	mParent->onMachineDataChange (mData->mUuid);
5173	}
5174
5175	LogFlowThisFunc (("rc=%08X\n", rc));
5176	LogFlowThisFuncLeave();
5177	return rc;
5178	}
5179
5180	/**
5181	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
5182	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
5183	* for more details.
5184	*
5185	* @param aSnapshot Snapshot to operate on
5186	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
5187	* or SaveSS_UpdateAttrsOp possibly combined with
5188	* SaveSS_UpdateCurrentId.
5189	*
5190	* @note Locks this object for writing + other child objects.
5191	*/
5192	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
5193	{
5194	AutoCaller autoCaller (this);
5195	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
5196
5197	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5198
5199	AutoLock alock (this);
5200
5201	AssertReturn (isConfigLocked(), E_FAIL);
5202
5203	HRESULT rc = S_OK;
5204
5205	try
5206	{
5207	using namespace settings;
5208
5209	/* load the config file */
5210	File file (File::ReadWrite, mData->mHandleCfgFile,
5211	Utf8Str (mData->mConfigFileFull));
5212	XmlTreeBackend tree;
5213
5214	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
5215	CheckComRCReturnRC (rc);
5216
5217	Key machineNode = tree.rootKey().key ("Machine");
5218
5219	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
5220	CheckComRCReturnRC (rc);
5221
5222	/* save settings on success */
5223	rc = VirtualBox::saveSettingsTree (tree, file);
5224	CheckComRCReturnRC (rc);
5225	}
5226	catch (...)
5227	{
5228	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5229	}
5230
5231	return rc;
5232	}
5233
5234	/**
5235	* Performs the specified operation on the given snapshot
5236	* in the settings file represented by \a aMachineNode.
5237	*
5238	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
5239	* that the whole tree of the snapshots should be updated in <Machine>.
5240	* One particular case is when the last (and the only) snapshot should be
5241	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
5242	*
5243	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
5244	* attribute of <Machine> needs to be updated.
5245	*
5246	* @param aMachineNode <Machine> node in the opened settings file.
5247	* @param aSnapshot Snapshot to operate on.
5248	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
5249	* or SaveSS_UpdateAttrsOp possibly combined with
5250	* SaveSS_UpdateCurrentId.
5251	*
5252	* @note Must be called with this object locked for writing.
5253	* Locks child objects.
5254	*/
5255	HRESULT Machine::saveSnapshotSettingsWorker (settings::Key &aMachineNode,
5256	Snapshot *aSnapshot, int aOpFlags)
5257	{
5258	using namespace settings;
5259
5260	AssertReturn (!aMachineNode.isNull(), E_FAIL);
5261
5262	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
5263
5264	int op = aOpFlags & SaveSS_OpMask;
5265	AssertReturn (
5266	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
5267	op == SaveSS_UpdateAllOp)) \|\|
5268	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_UpdateCurrentId)) \|\|
5269	op == SaveSS_UpdateAllOp)),
5270	E_FAIL);
5271
5272	HRESULT rc = S_OK;
5273
5274	bool recreateWholeTree = false;
5275
5276	do
5277	{
5278	if (op == SaveSS_NoOp)
5279	break;
5280
5281	/* quick path: recreate the whole tree of the snapshots */
5282	if (op == SaveSS_UpdateAllOp && !aSnapshot)
5283	{
5284	/* first, delete the entire root snapshot node if it exists */
5285	Key snapshotNode = aMachineNode.findKey ("Snapshot");
5286	if (!snapshotNode.isNull())
5287	snapshotNode.zap();
5288
5289	/* second, if we have any snapshots left, substitute aSnapshot
5290	* with the first snapshot to recreate the whole tree, otherwise
5291	* break */
5292	if (mData->mFirstSnapshot)
5293	{
5294	aSnapshot = mData->mFirstSnapshot;
5295	recreateWholeTree = true;
5296	}
5297	else
5298	break;
5299	}
5300
5301	Assert (!!aSnapshot);
5302	ComObjPtr <Snapshot> parent = aSnapshot->parent();
5303
5304	if (op == SaveSS_AddOp)
5305	{
5306	Key parentNode;
5307
5308	if (parent)
5309	{
5310	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
5311	CheckComRCBreakRC (rc);
5312
5313	ComAssertBreak (!parentNode.isNull(), rc = E_FAIL);
5314	}
5315
5316	do
5317	{
5318	Key snapshotsNode;
5319
5320	if (!parentNode.isNull())
5321	snapshotsNode = parentNode.createKey ("Snapshots");
5322	else
5323	snapshotsNode = aMachineNode;
5324	do
5325	{
5326	Key snapshotNode = snapshotsNode.appendKey ("Snapshot");
5327	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
5328	CheckComRCBreakRC (rc);
5329
5330	/* when a new snapshot is added, this means diffs were created
5331	* for every normal/immutable hard disk of the VM, so we need to
5332	* save the current hard disk attachments */
5333
5334	Key hdaNode = aMachineNode.findKey ("HardDiskAttachments");
5335	if (!hdaNode.isNull())
5336	hdaNode.zap();
5337	hdaNode = aMachineNode.createKey ("HardDiskAttachments");
5338
5339	rc = saveHardDisks (hdaNode);
5340	CheckComRCBreakRC (rc);
5341
5342	if (mHDData->mHDAttachments.size() != 0)
5343	{
5344	/* If we have one or more attachments then we definitely
5345	* created diffs for them and associated new diffs with
5346	* current settngs. So, since we don't use saveSettings(),
5347	* we need to inform callbacks manually. */
5348	if (mType == IsSessionMachine)
5349	mParent->onMachineDataChange (mData->mUuid);
5350	}
5351	}
5352	while (0);
5353	}
5354	while (0);
5355
5356	break;
5357	}
5358
5359	Assert ((op == SaveSS_UpdateAttrsOp && !recreateWholeTree) \|\|
5360	op == SaveSS_UpdateAllOp);
5361
5362	Key snapshotsNode;
5363	Key snapshotNode;
5364
5365	if (!recreateWholeTree)
5366	{
5367	rc = findSnapshotNode (aSnapshot, aMachineNode,
5368	&snapshotsNode, &snapshotNode);
5369	CheckComRCBreakRC (rc);
5370	}
5371
5372	if (snapshotsNode.isNull())
5373	snapshotsNode = aMachineNode;
5374
5375	if (op == SaveSS_UpdateAttrsOp)
5376	rc = saveSnapshot (snapshotNode, aSnapshot, true /* aAttrsOnly */);
5377	else
5378	{
5379	if (!snapshotNode.isNull())
5380	snapshotNode.zap();
5381
5382	snapshotNode = snapshotsNode.appendKey ("Snapshot");
5383	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
5384	CheckComRCBreakRC (rc);
5385	}
5386	}
5387	while (0);
5388
5389	if (SUCCEEDED (rc))
5390	{
5391	/* update currentSnapshot when appropriate */
5392	if (aOpFlags & SaveSS_UpdateCurrentId)
5393	{
5394	if (!mData->mCurrentSnapshot.isNull())
5395	aMachineNode.setValue <Guid> ("currentSnapshot",
5396	mData->mCurrentSnapshot->data().mId);
5397	else
5398	aMachineNode.zapValue ("currentSnapshot");
5399	}
5400	if (aOpFlags & SaveSS_UpdateCurStateModified)
5401	{
5402	aMachineNode.setValue <bool> ("currentStateModified", true);
5403	}
5404	}
5405
5406	return rc;
5407	}
5408
5409	/**
5410	* Saves the given snapshot and all its children (unless \a aAttrsOnly is true).
5411	* It is assumed that the given node is empty (unless \a aAttrsOnly is true).
5412	*
5413	* @param aNode <Snapshot> node to save the snapshot to.
5414	* @param aSnapshot Snapshot to save.
5415	* @param aAttrsOnly If true, only updatge user-changeable attrs.
5416	*/
5417	HRESULT Machine::saveSnapshot (settings::Key &aNode, Snapshot *aSnapshot, bool aAttrsOnly)
5418	{
5419	using namespace settings;
5420
5421	AssertReturn (!aNode.isNull() && aSnapshot, E_INVALIDARG);
5422	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5423
5424	/* uuid (required) */
5425	if (!aAttrsOnly)
5426	aNode.setValue <Guid> ("uuid", aSnapshot->data().mId);
5427
5428	/* name (required) */
5429	aNode.setValue <Bstr> ("name", aSnapshot->data().mName);
5430
5431	/* timeStamp (required) */
5432	aNode.setValue <RTTIMESPEC> ("timeStamp", aSnapshot->data().mTimeStamp);
5433
5434	/* Description node (optional) */
5435	if (!aSnapshot->data().mDescription.isNull())
5436	{
5437	Key descNode = aNode.createKey ("Description");
5438	descNode.setKeyValue <Bstr> (aSnapshot->data().mDescription);
5439	}
5440	else
5441	{
5442	Key descNode = aNode.findKey ("Description");
5443	if (!descNode.isNull())
5444	descNode.zap();
5445	}
5446
5447	if (aAttrsOnly)
5448	return S_OK;
5449
5450	/* stateFile (optional) */
5451	if (aSnapshot->stateFilePath())
5452	{
5453	/* try to make the file name relative to the settings file dir */
5454	Utf8Str stateFilePath = aSnapshot->stateFilePath();
5455	calculateRelativePath (stateFilePath, stateFilePath);
5456	aNode.setStringValue ("stateFile", stateFilePath);
5457	}
5458
5459	{
5460	ComObjPtr <SnapshotMachine> snapshotMachine = aSnapshot->data().mMachine;
5461	ComAssertRet (!snapshotMachine.isNull(), E_FAIL);
5462
5463	/* save hardware */
5464	{
5465	Key hwNode = aNode.createKey ("Hardware");
5466	HRESULT rc = snapshotMachine->saveHardware (hwNode);
5467	CheckComRCReturnRC (rc);
5468	}
5469
5470	/* save hard disks */
5471	{
5472	Key hdasNode = aNode.createKey ("HardDiskAttachments");
5473	HRESULT rc = snapshotMachine->saveHardDisks (hdasNode);
5474	CheckComRCReturnRC (rc);
5475	}
5476	}
5477
5478	/* save children */
5479	{
5480	AutoLock listLock (aSnapshot->childrenLock());
5481
5482	if (aSnapshot->children().size())
5483	{
5484	Key snapshotsNode = aNode.createKey ("Snapshots");
5485
5486	HRESULT rc = S_OK;
5487
5488	for (Snapshot::SnapshotList::const_iterator it = aSnapshot->children().begin();
5489	it != aSnapshot->children().end();
5490	++ it)
5491	{
5492	Key snapshotNode = snapshotsNode.createKey ("Snapshot");
5493	rc = saveSnapshot (snapshotNode, (*it), aAttrsOnly);
5494	CheckComRCReturnRC (rc);
5495	}
5496	}
5497	}
5498
5499	return S_OK;
5500	}
5501
5502	/**
5503	* Creates Saves the VM hardware configuration.
5504	* It is assumed that the given node is empty.
5505	*
5506	* @param aNode <Hardware> node to save the VM hardware confguration to.
5507	*/
5508	HRESULT Machine::saveHardware (settings::Key &aNode)
5509	{
5510	using namespace settings;
5511
5512	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5513
5514	HRESULT rc = S_OK;
5515
5516	/* CPU (optional) */
5517	{
5518	Key cpuNode = aNode.createKey ("CPU");
5519	Key hwVirtExNode = cpuNode.createKey ("HardwareVirtEx");
5520	const char *value = NULL;
5521	switch (mHWData->mHWVirtExEnabled)
5522	{
5523	case TriStateBool_False:
5524	value = "false";
5525	break;
5526	case TriStateBool_True:
5527	value = "true";
5528	break;
5529	case TriStateBool_Default:
5530	value = "default";
5531	}
5532	hwVirtExNode.setStringValue ("enabled", value);
5533	}
5534
5535	/* memory (required) */
5536	{
5537	Key memoryNode = aNode.createKey ("Memory");
5538	memoryNode.setValue <ULONG> ("RAMSize", mHWData->mMemorySize);
5539	}
5540
5541	/* boot (required) */
5542	{
5543	Key bootNode = aNode.createKey ("Boot");
5544
5545	for (ULONG pos = 0; pos < ELEMENTS (mHWData->mBootOrder); ++ pos)
5546	{
5547	const char *device = NULL;
5548	switch (mHWData->mBootOrder [pos])
5549	{
5550	case DeviceType_NoDevice:
5551	/* skip, this is allowed for <Order> nodes
5552	* when loading, the default value NoDevice will remain */
5553	continue;
5554	case DeviceType_FloppyDevice: device = "Floppy"; break;
5555	case DeviceType_DVDDevice: device = "DVD"; break;
5556	case DeviceType_HardDiskDevice: device = "HardDisk"; break;
5557	case DeviceType_NetworkDevice: device = "Network"; break;
5558	default:
5559	{
5560	ComAssertMsgFailedRet (("Invalid boot device: %d\n",
5561	mHWData->mBootOrder [pos]),
5562	E_FAIL);
5563	}
5564	}
5565
5566	Key orderNode = bootNode.appendKey ("Order");
5567	orderNode.setValue <ULONG> ("position", pos + 1);
5568	orderNode.setStringValue ("device", device);
5569	}
5570	}
5571
5572	/* display (required) */
5573	{
5574	Key displayNode = aNode.createKey ("Display");
5575	displayNode.setValue <ULONG> ("VRAMSize", mHWData->mVRAMSize);
5576	displayNode.setValue <ULONG> ("MonitorCount", mHWData->mMonitorCount);
5577	}
5578
5579	#ifdef VBOX_VRDP
5580	/* VRDP settings (optional) */
5581	rc = mVRDPServer->saveSettings (aNode);
5582	CheckComRCReturnRC (rc);
5583	#endif
5584
5585	/* BIOS (required) */
5586	rc = mBIOSSettings->saveSettings (aNode);
5587	CheckComRCReturnRC (rc);
5588
5589	/* DVD drive (required) */
5590	rc = mDVDDrive->saveSettings (aNode);
5591	CheckComRCReturnRC (rc);
5592
5593	/* Flooppy drive (required) */
5594	rc = mFloppyDrive->saveSettings (aNode);
5595	CheckComRCReturnRC (rc);
5596
5597	/* USB Controller (required) */
5598	rc = mUSBController->saveSettings (aNode);
5599	CheckComRCReturnRC (rc);
5600
5601	/* Network adapters (required) */
5602	{
5603	Key nwNode = aNode.createKey ("Network");
5604
5605	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); ++ slot)
5606	{
5607	Key adapterNode = nwNode.appendKey ("Adapter");
5608
5609	adapterNode.setValue <ULONG> ("slot", slot);
5610
5611	rc = mNetworkAdapters [slot]->saveSettings (adapterNode);
5612	CheckComRCReturnRC (rc);
5613	}
5614	}
5615
5616	/* Serial ports */
5617	{
5618	Key serialNode = aNode.createKey ("Uart");
5619	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); ++ slot)
5620	{
5621	Key portNode = serialNode.appendKey ("Port");
5622
5623	portNode.setValue <ULONG> ("slot", slot);
5624
5625	rc = mSerialPorts [slot]->saveSettings (portNode);
5626	CheckComRCReturnRC (rc);
5627	}
5628	}
5629
5630	/* Parallel ports */
5631	{
5632	Key parallelNode = aNode.createKey ("Lpt");
5633	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); ++ slot)
5634	{
5635	Key portNode = parallelNode.appendKey ("Port");
5636
5637	portNode.setValue <ULONG> ("slot", slot);
5638
5639	rc = mParallelPorts [slot]->saveSettings (portNode);
5640	CheckComRCReturnRC (rc);
5641	}
5642	}
5643
5644	/* Audio adapter */
5645	rc = mAudioAdapter->saveSettings (aNode);
5646	CheckComRCReturnRC (rc);
5647
5648	/* Shared folders */
5649	{
5650	Key sharedFoldersNode = aNode.createKey ("SharedFolders");
5651
5652	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
5653	it != mHWData->mSharedFolders.end();
5654	++ it)
5655	{
5656	ComObjPtr <SharedFolder> folder = *it;
5657
5658	Key folderNode = sharedFoldersNode.appendKey ("SharedFolder");
5659
5660	/* all are mandatory */
5661	folderNode.setValue <Bstr> ("name", folder->name());
5662	folderNode.setValue <Bstr> ("hostPath", folder->hostPath());
5663	}
5664	}
5665
5666	/* Clipboard */
5667	{
5668	Key clipNode = aNode.createKey ("Clipboard");
5669
5670	const char *modeStr = "Disabled";
5671	switch (mHWData->mClipboardMode)
5672	{
5673	case ClipboardMode_ClipDisabled:
5674	/* already assigned */
5675	break;
5676	case ClipboardMode_ClipHostToGuest:
5677	modeStr = "HostToGuest";
5678	break;
5679	case ClipboardMode_ClipGuestToHost:
5680	modeStr = "GuestToHost";
5681	break;
5682	case ClipboardMode_ClipBidirectional:
5683	modeStr = "Bidirectional";
5684	break;
5685	default:
5686	ComAssertMsgFailedRet (("Clipboard mode %d is invalid",
5687	mHWData->mClipboardMode),
5688	E_FAIL);
5689	}
5690	clipNode.setStringValue ("mode", modeStr);
5691	}
5692
5693	/* Guest */
5694	{
5695	Key guestNode = aNode.findKey ("Guest");
5696	/* first, delete the entire node if exists */
5697	if (!guestNode.isNull())
5698	guestNode.zap();
5699	/* then recreate it */
5700	guestNode = aNode.createKey ("Guest");
5701
5702	guestNode.setValue <ULONG> ("MemoryBalloonSize",
5703	mHWData->mMemoryBalloonSize);
5704	guestNode.setValue <ULONG> ("StatisticsUpdateInterval",
5705	mHWData->mStatisticsUpdateInterval);
5706	}
5707
5708	AssertComRC (rc);
5709	return rc;
5710	}
5711
5712	/**
5713	* Saves the hard disk confguration.
5714	* It is assumed that the given node is empty.
5715	*
5716	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
5717	*/
5718	HRESULT Machine::saveHardDisks (settings::Key &aNode)
5719	{
5720	using namespace settings;
5721
5722	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5723
5724	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
5725	it != mHDData->mHDAttachments.end();
5726	++ it)
5727	{
5728	ComObjPtr <HardDiskAttachment> att = *it;
5729
5730	Key hdNode = aNode.appendKey ("HardDiskAttachment");
5731
5732	{
5733	const char *bus = NULL;
5734	switch (att->controller())
5735	{
5736	case DiskControllerType_IDE0Controller: bus = "ide0"; break;
5737	case DiskControllerType_IDE1Controller: bus = "ide1"; break;
5738	default:
5739	ComAssertFailedRet (E_FAIL);
5740	}
5741
5742	const char *dev = NULL;
5743	switch (att->deviceNumber())
5744	{
5745	case 0: dev = "master"; break;
5746	case 1: dev = "slave"; break;
5747	default:
5748	ComAssertFailedRet (E_FAIL);
5749	}
5750
5751	hdNode.setValue <Guid> ("hardDisk", att->hardDisk()->id());
5752	hdNode.setStringValue ("bus", bus);
5753	hdNode.setStringValue ("device", dev);
5754	}
5755	}
5756
5757	return S_OK;
5758	}
5759
5760	/**
5761	* Saves machine state settings as defined by aFlags
5762	* (SaveSTS_* values).
5763	*
5764	* @param aFlags Combination of SaveSTS_* flags.
5765	*
5766	* @note Locks objects for writing.
5767	*/
5768	HRESULT Machine::saveStateSettings (int aFlags)
5769	{
5770	if (aFlags == 0)
5771	return S_OK;
5772
5773	AutoCaller autoCaller (this);
5774	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
5775
5776	AutoLock alock (this);
5777
5778	AssertReturn (isConfigLocked(), E_FAIL);
5779
5780	HRESULT rc = S_OK;
5781
5782	try
5783	{
5784	using namespace settings;
5785
5786	/* load the config file */
5787	File file (File::ReadWrite, mData->mHandleCfgFile,
5788	Utf8Str (mData->mConfigFileFull));
5789	XmlTreeBackend tree;
5790
5791	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
5792	CheckComRCReturnRC (rc);
5793
5794	Key machineNode = tree.rootKey().key ("Machine");
5795
5796	if (aFlags & SaveSTS_CurStateModified)
5797	{
5798	/* defaults to true */
5799	machineNode.setValueOr <bool> ("currentStateModified",
5800	!mData->mCurrentStateModified, true);
5801	}
5802
5803	if (aFlags & SaveSTS_StateFilePath)
5804	{
5805	if (mSSData->mStateFilePath)
5806	{
5807	/* try to make the file name relative to the settings file dir */
5808	Utf8Str stateFilePath = mSSData->mStateFilePath;
5809	calculateRelativePath (stateFilePath, stateFilePath);
5810	machineNode.setStringValue ("stateFile", stateFilePath);
5811	}
5812	else
5813	machineNode.zapValue ("stateFile");
5814	}
5815
5816	if (aFlags & SaveSTS_StateTimeStamp)
5817	{
5818	Assert (mData->mMachineState != MachineState_Aborted \|\|
5819	mSSData->mStateFilePath.isNull());
5820
5821	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
5822	mData->mLastStateChange);
5823
5824	/* set the aborted attribute when appropriate, defaults to false */
5825	machineNode.setValueOr <bool> ("aborted",
5826	mData->mMachineState == MachineState_Aborted,
5827	false);
5828	}
5829
5830	/* save settings on success */
5831	rc = VirtualBox::saveSettingsTree (tree, file);
5832	CheckComRCReturnRC (rc);
5833	}
5834	catch (...)
5835	{
5836	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5837	}
5838
5839	return rc;
5840	}
5841
5842	/**
5843	* Cleans up all differencing hard disks based on immutable hard disks.
5844	*
5845	* @note Locks objects!
5846	*/
5847	HRESULT Machine::wipeOutImmutableDiffs()
5848	{
5849	AutoCaller autoCaller (this);
5850	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
5851
5852	AutoReaderLock alock (this);
5853
5854	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
5855	mData->mMachineState == MachineState_Aborted, E_FAIL);
5856
5857	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
5858	it != mHDData->mHDAttachments.end();
5859	++ it)
5860	{
5861	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
5862	AutoLock hdLock (hd);
5863
5864	if(hd->isParentImmutable())
5865	{
5866	/// @todo (dmik) no error handling for now
5867	// (need async error reporting for this)
5868	hd->asVDI()->wipeOutImage();
5869	}
5870	}
5871
5872	return S_OK;
5873	}
5874
5875	/**
5876	* Fixes up lazy hard disk attachments by creating or deleting differencing
5877	* hard disks when machine settings are being committed.
5878	* Must be called only from #commit().
5879	*
5880	* @note Locks objects!
5881	*/
5882	HRESULT Machine::fixupHardDisks (bool aCommit)
5883	{
5884	AutoCaller autoCaller (this);
5885	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
5886
5887	AutoLock alock (this);
5888
5889	/* no attac/detach operations -- nothing to do */
5890	if (!mHDData.isBackedUp())
5891	{
5892	mHDData->mHDAttachmentsChanged = false;
5893	return S_OK;
5894	}
5895
5896	AssertReturn (mData->mRegistered, E_FAIL);
5897
5898	if (aCommit)
5899	{
5900	/*
5901	* changes are being committed,
5902	* perform actual diff image creation, deletion etc.
5903	*/
5904
5905	/* take a copy of backed up attachments (will modify it) */
5906	HDData::HDAttachmentList backedUp = mHDData.backedUpData()->mHDAttachments;
5907	/* list of new diffs created */
5908	std::list <ComObjPtr <HardDisk> > newDiffs;
5909
5910	HRESULT rc = S_OK;
5911
5912	/* go through current attachments */
5913	for (HDData::HDAttachmentList::const_iterator
5914	it = mHDData->mHDAttachments.begin();
5915	it != mHDData->mHDAttachments.end();
5916	++ it)
5917	{
5918	ComObjPtr <HardDiskAttachment> hda = *it;
5919	ComObjPtr <HardDisk> hd = hda->hardDisk();
5920	AutoLock hdLock (hd);
5921
5922	if (!hda->isDirty())
5923	{
5924	/*
5925	* not dirty, therefore was either attached before backing up
5926	* or doesn't need any fixup (already fixed up); try to locate
5927	* this hard disk among backed up attachments and remove from
5928	* there to prevent it from being deassociated/deleted
5929	*/
5930	HDData::HDAttachmentList::iterator oldIt;
5931	for (oldIt = backedUp.begin(); oldIt != backedUp.end(); ++ oldIt)
5932	if ((*oldIt)->hardDisk().equalsTo (hd))
5933	break;
5934	if (oldIt != backedUp.end())
5935	{
5936	/* remove from there */
5937	backedUp.erase (oldIt);
5938	Log3 (("FC: %ls found in old\n", hd->toString().raw()));
5939	}
5940	}
5941	else
5942	{
5943	/* dirty, determine what to do */
5944
5945	bool needDiff = false;
5946	bool searchAmongSnapshots = false;
5947
5948	switch (hd->type())
5949	{
5950	case HardDiskType_ImmutableHardDisk:
5951	{
5952	/* decrease readers increased in AttachHardDisk() */
5953	hd->releaseReader();
5954	Log3 (("FC: %ls released\n", hd->toString().raw()));
5955	/* indicate we need a diff (indirect attachment) */
5956	needDiff = true;
5957	break;
5958	}
5959	case HardDiskType_WritethroughHardDisk:
5960	{
5961	/* reset the dirty flag */
5962	hda->updateHardDisk (hd, false /* aDirty */);
5963	Log3 (("FC: %ls updated\n", hd->toString().raw()));
5964	break;
5965	}
5966	case HardDiskType_NormalHardDisk:
5967	{
5968	if (hd->snapshotId().isEmpty())
5969	{
5970	/* reset the dirty flag */
5971	hda->updateHardDisk (hd, false /* aDirty */);
5972	Log3 (("FC: %ls updated\n", hd->toString().raw()));
5973	}
5974	else
5975	{
5976	/* decrease readers increased in AttachHardDisk() */
5977	hd->releaseReader();
5978	Log3 (("FC: %ls released\n", hd->toString().raw()));
5979	/* indicate we need a diff (indirect attachment) */
5980	needDiff = true;
5981	/* search for the most recent base among snapshots */
5982	searchAmongSnapshots = true;
5983	}
5984	break;
5985	}
5986	}
5987
5988	if (!needDiff)
5989	continue;
5990
5991	bool createDiff = false;
5992
5993	/*
5994	* see whether any previously attached hard disk has the
5995	* the currently attached one (Normal or Independent) as
5996	* the root
5997	*/
5998
5999	HDData::HDAttachmentList::iterator foundIt = backedUp.end();
6000
6001	for (HDData::HDAttachmentList::iterator it = backedUp.begin();
6002	it != backedUp.end();
6003	++ it)
6004	{
6005	if ((*it)->hardDisk()->root().equalsTo (hd))
6006	{
6007	/*
6008	* matched dev and ctl (i.e. attached to the same place)
6009	* will win and immediately stop the search; otherwise
6010	* the first attachment that matched the hd only will
6011	* be used
6012	*/
6013	if ((*it)->deviceNumber() == hda->deviceNumber() &&
6014	(*it)->controller() == hda->controller())
6015	{
6016	foundIt = it;
6017	break;
6018	}
6019	else
6020	if (foundIt == backedUp.end())
6021	{
6022	/*
6023	* not an exact match; ensure there is no exact match
6024	* among other current attachments referring the same
6025	* root (to prevent this attachmend from reusing the
6026	* hard disk of the other attachment that will later
6027	* give the exact match or already gave it before)
6028	*/
6029	bool canReuse = true;
6030	for (HDData::HDAttachmentList::const_iterator
6031	it2 = mHDData->mHDAttachments.begin();
6032	it2 != mHDData->mHDAttachments.end();
6033	++ it2)
6034	{
6035	if ((it2)->deviceNumber() == (it)->deviceNumber() &&
6036	(it2)->controller() == (it)->controller() &&
6037	(*it2)->hardDisk()->root().equalsTo (hd))
6038	{
6039	/*
6040	* the exact match, either non-dirty or dirty
6041	* one refers the same root: in both cases
6042	* we cannot reuse the hard disk, so break
6043	*/
6044	canReuse = false;
6045	break;
6046	}
6047	}
6048
6049	if (canReuse)
6050	foundIt = it;
6051	}
6052	}
6053	}
6054
6055	if (foundIt != backedUp.end())
6056	{
6057	/* found either one or another, reuse the diff */
6058	hda->updateHardDisk ((*foundIt)->hardDisk(),
6059	false /* aDirty */);
6060	Log3 (("FC: %ls reused as %ls\n", hd->toString().raw(),
6061	(*foundIt)->hardDisk()->toString().raw()));
6062	/* remove from there */
6063	backedUp.erase (foundIt);
6064	}
6065	else
6066	{
6067	/* was not attached, need a diff */
6068	createDiff = true;
6069	}
6070
6071	if (!createDiff)
6072	continue;
6073
6074	ComObjPtr <HardDisk> baseHd = hd;
6075
6076	if (searchAmongSnapshots)
6077	{
6078	/*
6079	* find the most recent diff based on the currently
6080	* attached root (Normal hard disk) among snapshots
6081	*/
6082
6083	ComObjPtr <Snapshot> snap = mData->mCurrentSnapshot;
6084
6085	while (snap)
6086	{
6087	AutoLock snapLock (snap);
6088
6089	const HDData::HDAttachmentList &snapAtts =
6090	snap->data().mMachine->mHDData->mHDAttachments;
6091
6092	HDData::HDAttachmentList::const_iterator foundIt = snapAtts.end();
6093
6094	for (HDData::HDAttachmentList::const_iterator
6095	it = snapAtts.begin(); it != snapAtts.end(); ++ it)
6096	{
6097	if ((*it)->hardDisk()->root().equalsTo (hd))
6098	{
6099	/*
6100	* matched dev and ctl (i.e. attached to the same place)
6101	* will win and immediately stop the search; otherwise
6102	* the first attachment that matched the hd only will
6103	* be used
6104	*/
6105	if ((*it)->deviceNumber() == hda->deviceNumber() &&
6106	(*it)->controller() == hda->controller())
6107	{
6108	foundIt = it;
6109	break;
6110	}
6111	else
6112	if (foundIt == snapAtts.end())
6113	foundIt = it;
6114	}
6115	}
6116
6117	if (foundIt != snapAtts.end())
6118	{
6119	/* the most recent diff has been found, use as a base */
6120	baseHd = (*foundIt)->hardDisk();
6121	Log3 (("FC: %ls: recent found %ls\n",
6122	hd->toString().raw(), baseHd->toString().raw()));
6123	break;
6124	}
6125
6126	snap = snap->parent();
6127	}
6128	}
6129
6130	/* create a new diff for the hard disk being indirectly attached */
6131
6132	AutoLock baseHdLock (baseHd);
6133	baseHd->addReader();
6134
6135	ComObjPtr <HVirtualDiskImage> vdi;
6136	rc = baseHd->createDiffHardDisk (mUserData->mSnapshotFolderFull,
6137	mData->mUuid, vdi, NULL);
6138	baseHd->releaseReader();
6139	CheckComRCBreakRC (rc);
6140
6141	newDiffs.push_back (ComObjPtr <HardDisk> (vdi));
6142
6143	/* update the attachment and reset the dirty flag */
6144	hda->updateHardDisk (ComObjPtr <HardDisk> (vdi),
6145	false /* aDirty */);
6146	Log3 (("FC: %ls: diff created %ls\n",
6147	baseHd->toString().raw(), vdi->toString().raw()));
6148	}
6149	}
6150
6151	if (FAILED (rc))
6152	{
6153	/* delete diffs we created */
6154	for (std::list <ComObjPtr <HardDisk> >::const_iterator
6155	it = newDiffs.begin(); it != newDiffs.end(); ++ it)
6156	{
6157	/*
6158	* unregisterDiffHardDisk() is supposed to delete and uninit
6159	* the differencing hard disk
6160	*/
6161	mParent->unregisterDiffHardDisk (*it);
6162	/* too bad if we fail here, but nothing to do, just continue */
6163	}
6164
6165	/* the best is to rollback the changes... */
6166	mHDData.rollback();
6167	mHDData->mHDAttachmentsChanged = false;
6168	Log3 (("FC: ROLLED BACK\n"));
6169	return rc;
6170	}
6171
6172	/*
6173	* go through the rest of old attachments and delete diffs
6174	* or deassociate hard disks from machines (they will become detached)
6175	*/
6176	for (HDData::HDAttachmentList::iterator
6177	it = backedUp.begin(); it != backedUp.end(); ++ it)
6178	{
6179	ComObjPtr <HardDiskAttachment> hda = *it;
6180	ComObjPtr <HardDisk> hd = hda->hardDisk();
6181	AutoLock hdLock (hd);
6182
6183	if (hd->isDifferencing())
6184	{
6185	/*
6186	* unregisterDiffHardDisk() is supposed to delete and uninit
6187	* the differencing hard disk
6188	*/
6189	Log3 (("FC: %ls diff deleted\n", hd->toString().raw()));
6190	rc = mParent->unregisterDiffHardDisk (hd);
6191	/*
6192	* too bad if we fail here, but nothing to do, just continue
6193	* (the last rc will be returned to the caller though)
6194	*/
6195	}
6196	else
6197	{
6198	/* deassociate from this machine */
6199	Log3 (("FC: %ls deassociated\n", hd->toString().raw()));
6200	hd->setMachineId (Guid());
6201	}
6202	}
6203
6204	/* commit all the changes */
6205	mHDData->mHDAttachmentsChanged = mHDData.hasActualChanges();
6206	mHDData.commit();
6207	Log3 (("FC: COMMITTED\n"));
6208
6209	return rc;
6210	}
6211
6212	/*
6213	* changes are being rolled back,
6214	* go trhough all current attachments and fix up dirty ones
6215	* the way it is done in DetachHardDisk()
6216	*/
6217
6218	for (HDData::HDAttachmentList::iterator it = mHDData->mHDAttachments.begin();
6219	it != mHDData->mHDAttachments.end();
6220	++ it)
6221	{
6222	ComObjPtr <HardDiskAttachment> hda = *it;
6223	ComObjPtr <HardDisk> hd = hda->hardDisk();
6224	AutoLock hdLock (hd);
6225
6226	if (hda->isDirty())
6227	{
6228	switch (hd->type())
6229	{
6230	case HardDiskType_ImmutableHardDisk:
6231	{
6232	/* decrease readers increased in AttachHardDisk() */
6233	hd->releaseReader();
6234	Log3 (("FR: %ls released\n", hd->toString().raw()));
6235	break;
6236	}
6237	case HardDiskType_WritethroughHardDisk:
6238	{
6239	/* deassociate from this machine */
6240	hd->setMachineId (Guid());
6241	Log3 (("FR: %ls deassociated\n", hd->toString().raw()));
6242	break;
6243	}
6244	case HardDiskType_NormalHardDisk:
6245	{
6246	if (hd->snapshotId().isEmpty())
6247	{
6248	/* deassociate from this machine */
6249	hd->setMachineId (Guid());
6250	Log3 (("FR: %ls deassociated\n", hd->toString().raw()));
6251	}
6252	else
6253	{
6254	/* decrease readers increased in AttachHardDisk() */
6255	hd->releaseReader();
6256	Log3 (("FR: %ls released\n", hd->toString().raw()));
6257	}
6258
6259	break;
6260	}
6261	}
6262	}
6263	}
6264
6265	/* rollback all the changes */
6266	mHDData.rollback();
6267	Log3 (("FR: ROLLED BACK\n"));
6268
6269	return S_OK;
6270	}
6271
6272	/**
6273	* Creates differencing hard disks for all normal hard disks
6274	* and replaces attachments to refer to created disks.
6275	* Used when taking a snapshot or when discarding the current state.
6276	*
6277	* @param aSnapshotId ID of the snapshot being taken
6278	* or NULL if the current state is being discarded
6279	* @param aFolder folder where to create diff. hard disks
6280	* @param aProgress progress object to run (must contain at least as
6281	* many operations left as the number of VDIs attached)
6282	* @param aOnline whether the machine is online (i.e., when the EMT
6283	* thread is paused, OR when current hard disks are
6284	* marked as busy for some other reason)
6285	*
6286	* @note
6287	* The progress object is not marked as completed, neither on success
6288	* nor on failure. This is a responsibility of the caller.
6289	*
6290	* @note Locks mParent + this object for writing
6291	*/
6292	HRESULT Machine::createSnapshotDiffs (const Guid *aSnapshotId,
6293	const Bstr &aFolder,
6294	const ComObjPtr <Progress> &aProgress,
6295	bool aOnline)
6296	{
6297	AssertReturn (!aFolder.isEmpty(), E_FAIL);
6298
6299	AutoCaller autoCaller (this);
6300	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6301
6302	/* accessing mParent methods below needs mParent lock */
6303	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
6304
6305	HRESULT rc = S_OK;
6306
6307	// first pass: check accessibility before performing changes
6308	if (!aOnline)
6309	{
6310	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
6311	it != mHDData->mHDAttachments.end();
6312	++ it)
6313	{
6314	ComObjPtr <HardDiskAttachment> hda = *it;
6315	ComObjPtr <HardDisk> hd = hda->hardDisk();
6316	AutoLock hdLock (hd);
6317
6318	ComAssertMsgBreak (hd->type() == HardDiskType_NormalHardDisk,
6319	("Invalid hard disk type %d\n", hd->type()),
6320	rc = E_FAIL);
6321
6322	ComAssertMsgBreak (!hd->isParentImmutable() \|\|
6323	hd->storageType() == HardDiskStorageType_VirtualDiskImage,
6324	("Invalid hard disk storage type %d\n", hd->storageType()),
6325	rc = E_FAIL);
6326
6327	Bstr accessError;
6328	rc = hd->getAccessible (accessError);
6329	CheckComRCBreakRC (rc);
6330
6331	if (!accessError.isNull())
6332	{
6333	rc = setError (E_FAIL,
6334	tr ("Hard disk '%ls' is not accessible (%ls)"),
6335	hd->toString().raw(), accessError.raw());
6336	break;
6337	}
6338	}
6339	CheckComRCReturnRC (rc);
6340	}
6341
6342	HDData::HDAttachmentList attachments;
6343
6344	// second pass: perform changes
6345	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
6346	it != mHDData->mHDAttachments.end();
6347	++ it)
6348	{
6349	ComObjPtr <HardDiskAttachment> hda = *it;
6350	ComObjPtr <HardDisk> hd = hda->hardDisk();
6351	AutoLock hdLock (hd);
6352
6353	ComObjPtr <HardDisk> parent = hd->parent();
6354	AutoLock parentHdLock (parent);
6355
6356	ComObjPtr <HardDisk> newHd;
6357
6358	// clear busy flag if the VM is online
6359	if (aOnline)
6360	hd->clearBusy();
6361	// increase readers
6362	hd->addReader();
6363
6364	if (hd->isParentImmutable())
6365	{
6366	aProgress->advanceOperation (Bstr (Utf8StrFmt (
6367	tr ("Preserving immutable hard disk '%ls'"),
6368	parent->toString (true /* aShort */).raw())));
6369
6370	parentHdLock.unlock();
6371	alock.leave();
6372
6373	// create a copy of the independent diff
6374	ComObjPtr <HVirtualDiskImage> vdi;
6375	rc = hd->asVDI()->cloneDiffImage (aFolder, mData->mUuid, vdi,
6376	aProgress);
6377	newHd = vdi;
6378
6379	alock.enter();
6380	parentHdLock.lock();
6381
6382	// decrease readers (hd is no more used for reading in any case)
6383	hd->releaseReader();
6384	}
6385	else
6386	{
6387	// checked in the first pass
6388	Assert (hd->type() == HardDiskType_NormalHardDisk);
6389
6390	aProgress->advanceOperation (Bstr (Utf8StrFmt (
6391	tr ("Creating a differencing hard disk for '%ls'"),
6392	hd->root()->toString (true /* aShort */).raw())));
6393
6394	parentHdLock.unlock();
6395	alock.leave();
6396
6397	// create a new diff for the image being attached
6398	ComObjPtr <HVirtualDiskImage> vdi;
6399	rc = hd->createDiffHardDisk (aFolder, mData->mUuid, vdi, aProgress);
6400	newHd = vdi;
6401
6402	alock.enter();
6403	parentHdLock.lock();
6404
6405	if (SUCCEEDED (rc))
6406	{
6407	// if online, hd must keep a reader referece
6408	if (!aOnline)
6409	hd->releaseReader();
6410	}
6411	else
6412	{
6413	// decrease readers
6414	hd->releaseReader();
6415	}
6416	}
6417
6418	if (SUCCEEDED (rc))
6419	{
6420	ComObjPtr <HardDiskAttachment> newHda;
6421	newHda.createObject();
6422	rc = newHda->init (newHd, hda->controller(), hda->deviceNumber(),
6423	false /* aDirty */);
6424
6425	if (SUCCEEDED (rc))
6426	{
6427	// associate the snapshot id with the old hard disk
6428	if (hd->type() != HardDiskType_WritethroughHardDisk && aSnapshotId)
6429	hd->setSnapshotId (*aSnapshotId);
6430
6431	// add the new attachment
6432	attachments.push_back (newHda);
6433
6434	// if online, newHd must be marked as busy
6435	if (aOnline)
6436	newHd->setBusy();
6437	}
6438	}
6439
6440	if (FAILED (rc))
6441	{
6442	// set busy flag back if the VM is online
6443	if (aOnline)
6444	hd->setBusy();
6445	break;
6446	}
6447	}
6448
6449	if (SUCCEEDED (rc))
6450	{
6451	// replace the whole list of attachments with the new one
6452	mHDData->mHDAttachments = attachments;
6453	}
6454	else
6455	{
6456	// delete those diffs we've just created
6457	for (HDData::HDAttachmentList::const_iterator it = attachments.begin();
6458	it != attachments.end();
6459	++ it)
6460	{
6461	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
6462	AutoLock hdLock (hd);
6463	Assert (hd->children().size() == 0);
6464	Assert (hd->isDifferencing());
6465	// unregisterDiffHardDisk() is supposed to delete and uninit
6466	// the differencing hard disk
6467	mParent->unregisterDiffHardDisk (hd);
6468	}
6469	}
6470
6471	return rc;
6472	}
6473
6474	/**
6475	* Deletes differencing hard disks created by createSnapshotDiffs() in case
6476	* if snapshot creation was failed.
6477	*
6478	* @param aSnapshot failed snapshot
6479	*
6480	* @note Locks mParent + this object for writing.
6481	*/
6482	HRESULT Machine::deleteSnapshotDiffs (const ComObjPtr <Snapshot> &aSnapshot)
6483	{
6484	AssertReturn (!aSnapshot.isNull(), E_FAIL);
6485
6486	AutoCaller autoCaller (this);
6487	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6488
6489	/* accessing mParent methods below needs mParent lock */
6490	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
6491
6492	/* short cut: check whether attachments are all the same */
6493	if (mHDData->mHDAttachments == aSnapshot->data().mMachine->mHDData->mHDAttachments)
6494	return S_OK;
6495
6496	HRESULT rc = S_OK;
6497
6498	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
6499	it != mHDData->mHDAttachments.end();
6500	++ it)
6501	{
6502	ComObjPtr <HardDiskAttachment> hda = *it;
6503	ComObjPtr <HardDisk> hd = hda->hardDisk();
6504	AutoLock hdLock (hd);
6505
6506	ComObjPtr <HardDisk> parent = hd->parent();
6507	AutoLock parentHdLock (parent);
6508
6509	if (!parent \|\| parent->snapshotId() != aSnapshot->data().mId)
6510	continue;
6511
6512	/* must not have children */
6513	ComAssertRet (hd->children().size() == 0, E_FAIL);
6514
6515	/* deassociate the old hard disk from the given snapshot's ID */
6516	parent->setSnapshotId (Guid());
6517
6518	/* unregisterDiffHardDisk() is supposed to delete and uninit
6519	* the differencing hard disk */
6520	rc = mParent->unregisterDiffHardDisk (hd);
6521	/* continue on error */
6522	}
6523
6524	/* restore the whole list of attachments from the failed snapshot */
6525	mHDData->mHDAttachments = aSnapshot->data().mMachine->mHDData->mHDAttachments;
6526
6527	return rc;
6528	}
6529
6530	/**
6531	* Helper to lock the machine configuration for write access.
6532	*
6533	* @return S_OK or E_FAIL and sets error info on failure
6534	*
6535	* @note Doesn't lock anything (must be called from this object's lock)
6536	*/
6537	HRESULT Machine::lockConfig()
6538	{
6539	HRESULT rc = S_OK;
6540
6541	if (!isConfigLocked())
6542	{
6543	/* open the associated config file */
6544	int vrc = RTFileOpen (&mData->mHandleCfgFile,
6545	Utf8Str (mData->mConfigFileFull),
6546	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
6547	RTFILE_O_DENY_WRITE);
6548	if (VBOX_FAILURE (vrc))
6549	mData->mHandleCfgFile = NIL_RTFILE;
6550	}
6551
6552	LogFlowThisFunc (("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
6553	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
6554	return rc;
6555	}
6556
6557	/**
6558	* Helper to unlock the machine configuration from write access
6559	*
6560	* @return S_OK
6561	*
6562	* @note Doesn't lock anything.
6563	* @note Not thread safe (must be called from this object's lock).
6564	*/
6565	HRESULT Machine::unlockConfig()
6566	{
6567	HRESULT rc = S_OK;
6568
6569	if (isConfigLocked())
6570	{
6571	RTFileFlush(mData->mHandleCfgFile);
6572	RTFileClose(mData->mHandleCfgFile);
6573	/** @todo flush the directory. */
6574	mData->mHandleCfgFile = NIL_RTFILE;
6575	}
6576
6577	LogFlowThisFunc (("\n"));
6578
6579	return rc;
6580	}
6581
6582	/**
6583	* Returns true if the settings file is located in the directory named exactly
6584	* as the machine. This will be true if the machine settings structure was
6585	* created by default in #openConfigLoader().
6586	*
6587	* @param aSettingsDir if not NULL, the full machine settings file directory
6588	* name will be assigned there.
6589	*
6590	* @note Doesn't lock anything.
6591	* @note Not thread safe (must be called from this object's lock).
6592	*/
6593	bool Machine::isInOwnDir (Utf8Str aSettingsDir / = NULL */)
6594	{
6595	Utf8Str settingsDir = mData->mConfigFileFull;
6596	RTPathStripFilename (settingsDir.mutableRaw());
6597	char *dirName = RTPathFilename (settingsDir);
6598
6599	AssertReturn (dirName, false);
6600
6601	/* if we don't rename anything on name change, return false shorlty */
6602	if (!mUserData->mNameSync)
6603	return false;
6604
6605	if (aSettingsDir)
6606	*aSettingsDir = settingsDir;
6607
6608	return Bstr (dirName) == mUserData->mName;
6609	}
6610
6611	/**
6612	* @note Locks objects for reading!
6613	*/
6614	bool Machine::isModified()
6615	{
6616	AutoCaller autoCaller (this);
6617	AssertComRCReturn (autoCaller.rc(), false);
6618
6619	AutoReaderLock alock (this);
6620
6621	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6622	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
6623	return true;
6624
6625	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
6626	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
6627	return true;
6628
6629	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
6630	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
6631	return true;
6632
6633	return
6634	mUserData.isBackedUp() \|\|
6635	mHWData.isBackedUp() \|\|
6636	mHDData.isBackedUp() \|\|
6637	#ifdef VBOX_VRDP
6638	(mVRDPServer && mVRDPServer->isModified()) \|\|
6639	#endif
6640	(mDVDDrive && mDVDDrive->isModified()) \|\|
6641	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
6642	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
6643	(mUSBController && mUSBController->isModified()) \|\|
6644	(mBIOSSettings && mBIOSSettings->isModified());
6645	}
6646
6647	/**
6648	* @note This method doesn't check (ignores) actual changes to mHDData.
6649	* Use mHDData.mHDAttachmentsChanged right after #commit() instead.
6650	*
6651	* @param aIgnoreUserData \|true\| to ignore changes to mUserData
6652	*
6653	* @note Locks objects for reading!
6654	*/
6655	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
6656	{
6657	AutoCaller autoCaller (this);
6658	AssertComRCReturn (autoCaller.rc(), false);
6659
6660	AutoReaderLock alock (this);
6661
6662	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6663	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
6664	return true;
6665
6666	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
6667	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
6668	return true;
6669
6670	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
6671	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
6672	return true;
6673
6674	return
6675	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
6676	mHWData.hasActualChanges() \|\|
6677	/* ignore mHDData */
6678	//mHDData.hasActualChanges() \|\|
6679	#ifdef VBOX_VRDP
6680	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
6681	#endif
6682	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
6683	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
6684	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
6685	(mUSBController && mUSBController->isReallyModified()) \|\|
6686	(mBIOSSettings && mBIOSSettings->isReallyModified());
6687	}
6688
6689	/**
6690	* Discards all changes to machine settings.
6691	*
6692	* @param aNotify whether to notify the direct session about changes or not
6693	*
6694	* @note Locks objects!
6695	*/
6696	void Machine::rollback (bool aNotify)
6697	{
6698	AutoCaller autoCaller (this);
6699	AssertComRCReturn (autoCaller.rc(), (void) 0);
6700
6701	AutoLock alock (this);
6702
6703	/* check for changes in own data */
6704
6705	bool sharedFoldersChanged = false;
6706
6707	if (aNotify && mHWData.isBackedUp())
6708	{
6709	if (mHWData->mSharedFolders.size() !=
6710	mHWData.backedUpData()->mSharedFolders.size())
6711	sharedFoldersChanged = true;
6712	else
6713	{
6714	for (HWData::SharedFolderList::iterator rit =
6715	mHWData->mSharedFolders.begin();
6716	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
6717	++ rit)
6718	{
6719	for (HWData::SharedFolderList::iterator cit =
6720	mHWData.backedUpData()->mSharedFolders.begin();
6721	cit != mHWData.backedUpData()->mSharedFolders.end();
6722	++ cit)
6723	{
6724	if ((cit)->name() != (rit)->name() \|\|
6725	(cit)->hostPath() != (rit)->hostPath())
6726	{
6727	sharedFoldersChanged = true;
6728	break;
6729	}
6730	}
6731	}
6732	}
6733	}
6734
6735	mUserData.rollback();
6736
6737	mHWData.rollback();
6738
6739	if (mHDData.isBackedUp())
6740	fixupHardDisks (false /* aCommit */);
6741
6742	/* check for changes in child objects */
6743
6744	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
6745	usbChanged = false;
6746
6747	ComPtr <INetworkAdapter> networkAdapters [ELEMENTS (mNetworkAdapters)];
6748	ComPtr <ISerialPort> serialPorts [ELEMENTS (mSerialPorts)];
6749	ComPtr <IParallelPort> parallelPorts [ELEMENTS (mParallelPorts)];
6750
6751	if (mBIOSSettings)
6752	mBIOSSettings->rollback();
6753
6754	#ifdef VBOX_VRDP
6755	if (mVRDPServer)
6756	vrdpChanged = mVRDPServer->rollback();
6757	#endif
6758
6759	if (mDVDDrive)
6760	dvdChanged = mDVDDrive->rollback();
6761
6762	if (mFloppyDrive)
6763	floppyChanged = mFloppyDrive->rollback();
6764
6765	if (mAudioAdapter)
6766	mAudioAdapter->rollback();
6767
6768	if (mUSBController)
6769	usbChanged = mUSBController->rollback();
6770
6771	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6772	if (mNetworkAdapters [slot])
6773	if (mNetworkAdapters [slot]->rollback())
6774	networkAdapters [slot] = mNetworkAdapters [slot];
6775
6776	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
6777	if (mSerialPorts [slot])
6778	if (mSerialPorts [slot]->rollback())
6779	serialPorts [slot] = mSerialPorts [slot];
6780
6781	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
6782	if (mParallelPorts [slot])
6783	if (mParallelPorts [slot]->rollback())
6784	parallelPorts [slot] = mParallelPorts [slot];
6785
6786	if (aNotify)
6787	{
6788	/* inform the direct session about changes */
6789
6790	ComObjPtr <Machine> that = this;
6791	alock.leave();
6792
6793	if (sharedFoldersChanged)
6794	that->onSharedFolderChange();
6795
6796	if (vrdpChanged)
6797	that->onVRDPServerChange();
6798	if (dvdChanged)
6799	that->onDVDDriveChange();
6800	if (floppyChanged)
6801	that->onFloppyDriveChange();
6802	if (usbChanged)
6803	that->onUSBControllerChange();
6804
6805	for (ULONG slot = 0; slot < ELEMENTS (networkAdapters); slot ++)
6806	if (networkAdapters [slot])
6807	that->onNetworkAdapterChange (networkAdapters [slot]);
6808	for (ULONG slot = 0; slot < ELEMENTS (serialPorts); slot ++)
6809	if (serialPorts [slot])
6810	that->onSerialPortChange (serialPorts [slot]);
6811	for (ULONG slot = 0; slot < ELEMENTS (parallelPorts); slot ++)
6812	if (parallelPorts [slot])
6813	that->onParallelPortChange (parallelPorts [slot]);
6814	}
6815	}
6816
6817	/**
6818	* Commits all the changes to machine settings.
6819	*
6820	* Note that when committing fails at some stage, it still continues
6821	* until the end. So, all data will either be actually committed or rolled
6822	* back (for failed cases) and the returned result code will describe the
6823	* first failure encountered. However, #isModified() will still return true
6824	* in case of failure, to indicade that settings in memory and on disk are
6825	* out of sync.
6826	*
6827	* @note Locks objects!
6828	*/
6829	HRESULT Machine::commit()
6830	{
6831	AutoCaller autoCaller (this);
6832	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6833
6834	AutoLock alock (this);
6835
6836	HRESULT rc = S_OK;
6837
6838	/*
6839	* use safe commit to ensure Snapshot machines (that share mUserData)
6840	* will still refer to a valid memory location
6841	*/
6842	mUserData.commitCopy();
6843
6844	mHWData.commit();
6845
6846	if (mHDData.isBackedUp())
6847	rc = fixupHardDisks (true /* aCommit */);
6848
6849	mBIOSSettings->commit();
6850	#ifdef VBOX_VRDP
6851	mVRDPServer->commit();
6852	#endif
6853	mDVDDrive->commit();
6854	mFloppyDrive->commit();
6855	mAudioAdapter->commit();
6856	mUSBController->commit();
6857
6858	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6859	mNetworkAdapters [slot]->commit();
6860	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
6861	mSerialPorts [slot]->commit();
6862	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
6863	mParallelPorts [slot]->commit();
6864
6865	if (mType == IsSessionMachine)
6866	{
6867	/* attach new data to the primary machine and reshare it */
6868	mPeer->mUserData.attach (mUserData);
6869	mPeer->mHWData.attach (mHWData);
6870	mPeer->mHDData.attach (mHDData);
6871	}
6872
6873	if (FAILED (rc))
6874	{
6875	/*
6876	* backup arbitrary data item to cause #isModified() to still return
6877	* true in case of any error
6878	*/
6879	mHWData.backup();
6880	}
6881
6882	return rc;
6883	}
6884
6885	/**
6886	* Copies all the hardware data from the given machine.
6887	*
6888	* @note
6889	* This method must be called from under this object's lock.
6890	* @note
6891	* This method doesn't call #commit(), so all data remains backed up
6892	* and unsaved.
6893	*/
6894	void Machine::copyFrom (Machine *aThat)
6895	{
6896	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, (void) 0);
6897	AssertReturn (aThat->mType == IsSnapshotMachine, (void) 0);
6898
6899	mHWData.assignCopy (aThat->mHWData);
6900
6901	// create copies of all shared folders (mHWData after attiching a copy
6902	// contains just references to original objects)
6903	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
6904	it != mHWData->mSharedFolders.end();
6905	++ it)
6906	{
6907	ComObjPtr <SharedFolder> folder;
6908	folder.createObject();
6909	HRESULT rc = folder->initCopy (machine(), *it);
6910	AssertComRC (rc);
6911	*it = folder;
6912	}
6913
6914	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
6915	#ifdef VBOX_VRDP
6916	mVRDPServer->copyFrom (aThat->mVRDPServer);
6917	#endif
6918	mDVDDrive->copyFrom (aThat->mDVDDrive);
6919	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
6920	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
6921	mUSBController->copyFrom (aThat->mUSBController);
6922
6923	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6924	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
6925	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
6926	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
6927	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
6928	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
6929	}
6930
6931	/////////////////////////////////////////////////////////////////////////////
6932	// SessionMachine class
6933	/////////////////////////////////////////////////////////////////////////////
6934
6935	/** Task structure for asynchronous VM operations */
6936	struct SessionMachine::Task
6937	{
6938	Task (SessionMachine m, Progress p)
6939	: machine (m), progress (p)
6940	, state (m->mData->mMachineState) // save the current machine state
6941	, subTask (false), settingsChanged (false)
6942	{}
6943
6944	void modifyLastState (MachineState_T s)
6945	{
6946	const_cast <MachineState_T > (&state) = s;
6947	}
6948
6949	virtual void handler() = 0;
6950
6951	const ComObjPtr <SessionMachine> machine;
6952	const ComObjPtr <Progress> progress;
6953	const MachineState_T state;
6954
6955	bool subTask : 1;
6956	bool settingsChanged : 1;
6957	};
6958
6959	/** Take snapshot task */
6960	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
6961	{
6962	TakeSnapshotTask (SessionMachine *m)
6963	: Task (m, NULL) {}
6964
6965	void handler() { machine->takeSnapshotHandler (*this); }
6966	};
6967
6968	/** Discard snapshot task */
6969	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
6970	{
6971	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
6972	: Task (m, p)
6973	, snapshot (s) {}
6974
6975	DiscardSnapshotTask (const Task &task, Snapshot *s)
6976	: Task (task)
6977	, snapshot (s) {}
6978
6979	void handler() { machine->discardSnapshotHandler (*this); }
6980
6981	const ComObjPtr <Snapshot> snapshot;
6982	};
6983
6984	/** Discard current state task */
6985	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
6986	{
6987	DiscardCurrentStateTask (SessionMachine m, Progress p,
6988	bool discardCurSnapshot)
6989	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
6990
6991	void handler() { machine->discardCurrentStateHandler (*this); }
6992
6993	const bool discardCurrentSnapshot;
6994	};
6995
6996	////////////////////////////////////////////////////////////////////////////////
6997
6998	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
6999
7000	HRESULT SessionMachine::FinalConstruct()
7001	{
7002	LogFlowThisFunc (("\n"));
7003
7004	/* set the proper type to indicate we're the SessionMachine instance */
7005	unconst (mType) = IsSessionMachine;
7006
7007	#if defined(RT_OS_WINDOWS)
7008	mIPCSem = NULL;
7009	#elif defined(RT_OS_OS2)
7010	mIPCSem = NULLHANDLE;
7011	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7012	mIPCSem = -1;
7013	#else
7014	# error "Port me!"
7015	#endif
7016
7017	return S_OK;
7018	}
7019
7020	void SessionMachine::FinalRelease()
7021	{
7022	LogFlowThisFunc (("\n"));
7023
7024	uninit (Uninit::Unexpected);
7025	}
7026
7027	/**
7028	* @note Must be called only by Machine::openSession() from its own write lock.
7029	*/
7030	HRESULT SessionMachine::init (Machine *aMachine)
7031	{
7032	LogFlowThisFuncEnter();
7033	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
7034
7035	AssertReturn (aMachine, E_INVALIDARG);
7036
7037	AssertReturn (aMachine->lockHandle()->isLockedOnCurrentThread(), E_FAIL);
7038
7039	/* Enclose the state transition NotReady->InInit->Ready */
7040	AutoInitSpan autoInitSpan (this);
7041	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
7042
7043	/* create the interprocess semaphore */
7044	#if defined(RT_OS_WINDOWS)
7045	mIPCSemName = aMachine->mData->mConfigFileFull;
7046	for (size_t i = 0; i < mIPCSemName.length(); i++)
7047	if (mIPCSemName[i] == '\\')
7048	mIPCSemName[i] = '/';
7049	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
7050	ComAssertMsgRet (mIPCSem,
7051	("Cannot create IPC mutex '%ls', err=%d\n",
7052	mIPCSemName.raw(), ::GetLastError()),
7053	E_FAIL);
7054	#elif defined(RT_OS_OS2)
7055	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%Vuuid}",
7056	aMachine->mData->mUuid.raw());
7057	mIPCSemName = ipcSem;
7058	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
7059	ComAssertMsgRet (arc == NO_ERROR,
7060	("Cannot create IPC mutex '%s', arc=%ld\n",
7061	ipcSem.raw(), arc),
7062	E_FAIL);
7063	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7064	Utf8Str configFile = aMachine->mData->mConfigFileFull;
7065	char *configFileCP = NULL;
7066	RTStrUtf8ToCurrentCP (&configFileCP, configFile);
7067	key_t key = ::ftok (configFileCP, 0);
7068	RTStrFree (configFileCP);
7069	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
7070	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errno),
7071	E_FAIL);
7072	/* set the initial value to 1 */
7073	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
7074	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
7075	E_FAIL);
7076	#else
7077	# error "Port me!"
7078	#endif
7079
7080	/* memorize the peer Machine */
7081	unconst (mPeer) = aMachine;
7082	/* share the parent pointer */
7083	unconst (mParent) = aMachine->mParent;
7084
7085	/* take the pointers to data to share */
7086	mData.share (aMachine->mData);
7087	mSSData.share (aMachine->mSSData);
7088
7089	mUserData.share (aMachine->mUserData);
7090	mHWData.share (aMachine->mHWData);
7091	mHDData.share (aMachine->mHDData);
7092
7093	unconst (mBIOSSettings).createObject();
7094	mBIOSSettings->init (this, aMachine->mBIOSSettings);
7095	#ifdef VBOX_VRDP
7096	/* create another VRDPServer object that will be mutable */
7097	unconst (mVRDPServer).createObject();
7098	mVRDPServer->init (this, aMachine->mVRDPServer);
7099	#endif
7100	/* create another DVD drive object that will be mutable */
7101	unconst (mDVDDrive).createObject();
7102	mDVDDrive->init (this, aMachine->mDVDDrive);
7103	/* create another floppy drive object that will be mutable */
7104	unconst (mFloppyDrive).createObject();
7105	mFloppyDrive->init (this, aMachine->mFloppyDrive);
7106	/* create another audio adapter object that will be mutable */
7107	unconst (mAudioAdapter).createObject();
7108	mAudioAdapter->init (this, aMachine->mAudioAdapter);
7109	/* create a list of serial ports that will be mutable */
7110	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
7111	{
7112	unconst (mSerialPorts [slot]).createObject();
7113	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
7114	}
7115	/* create a list of parallel ports that will be mutable */
7116	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
7117	{
7118	unconst (mParallelPorts [slot]).createObject();
7119	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
7120	}
7121	/* create another USB controller object that will be mutable */
7122	unconst (mUSBController).createObject();
7123	mUSBController->init (this, aMachine->mUSBController);
7124	/* create a list of network adapters that will be mutable */
7125	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
7126	{
7127	unconst (mNetworkAdapters [slot]).createObject();
7128	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
7129	}
7130
7131	/* Confirm a successful initialization when it's the case */
7132	autoInitSpan.setSucceeded();
7133
7134	LogFlowThisFuncLeave();
7135	return S_OK;
7136	}
7137
7138	/**
7139	* Uninitializes this session object. If the reason is other than
7140	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
7141	*
7142	* @param aReason uninitialization reason
7143	*
7144	* @note Locks mParent + this object for writing.
7145	*/
7146	void SessionMachine::uninit (Uninit::Reason aReason)
7147	{
7148	LogFlowThisFuncEnter();
7149	LogFlowThisFunc (("reason=%d\n", aReason));
7150
7151	/*
7152	* Strongly reference ourselves to prevent this object deletion after
7153	* mData->mSession.mMachine.setNull() below (which can release the last
7154	* reference and call the destructor). Important: this must be done before
7155	* accessing any members (and before AutoUninitSpan that does it as well).
7156	* This self reference will be released as the very last step on return.
7157	*/
7158	ComObjPtr <SessionMachine> selfRef = this;
7159
7160	/* Enclose the state transition Ready->InUninit->NotReady */
7161	AutoUninitSpan autoUninitSpan (this);
7162	if (autoUninitSpan.uninitDone())
7163	{
7164	LogFlowThisFunc (("Already uninitialized\n"));
7165	LogFlowThisFuncLeave();
7166	return;
7167	}
7168
7169	if (autoUninitSpan.initFailed())
7170	{
7171	/*
7172	* We've been called by init() because it's failed. It's not really
7173	* necessary (nor it's safe) to perform the regular uninit sequence
7174	* below, the following is enough.
7175	*/
7176	LogFlowThisFunc (("Initialization failed.\n"));
7177	#if defined(RT_OS_WINDOWS)
7178	if (mIPCSem)
7179	::CloseHandle (mIPCSem);
7180	mIPCSem = NULL;
7181	#elif defined(RT_OS_OS2)
7182	if (mIPCSem != NULLHANDLE)
7183	::DosCloseMutexSem (mIPCSem);
7184	mIPCSem = NULLHANDLE;
7185	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7186	if (mIPCSem >= 0)
7187	::semctl (mIPCSem, 0, IPC_RMID);
7188	mIPCSem = -1;
7189	#else
7190	# error "Port me!"
7191	#endif
7192	uninitDataAndChildObjects();
7193	mData.free();
7194	unconst (mParent).setNull();
7195	unconst (mPeer).setNull();
7196	LogFlowThisFuncLeave();
7197	return;
7198	}
7199
7200	/*
7201	* We need to lock this object in uninit() because the lock is shared
7202	* with mPeer (as well as data we modify below).
7203	* mParent->addProcessToReap() and others need mParent lock.
7204	*/
7205	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7206
7207	MachineState_T lastState = mData->mMachineState;
7208
7209	if (aReason == Uninit::Abnormal)
7210	{
7211	LogWarningThisFunc (("ABNORMAL client termination! (wasRunning=%d)\n",
7212	lastState >= MachineState_Running));
7213
7214	/* reset the state to Aborted */
7215	if (mData->mMachineState != MachineState_Aborted)
7216	setMachineState (MachineState_Aborted);
7217	}
7218
7219	if (isModified())
7220	{
7221	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
7222	rollback (false /* aNotify */);
7223	}
7224
7225	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
7226	if (mSnapshotData.mStateFilePath)
7227	{
7228	LogWarningThisFunc (("canceling failed save state request!\n"));
7229	endSavingState (FALSE /* aSuccess */);
7230	}
7231	else if (!!mSnapshotData.mSnapshot)
7232	{
7233	LogWarningThisFunc (("canceling untaken snapshot!\n"));
7234	endTakingSnapshot (FALSE /* aSuccess */);
7235	}
7236
7237	/* release all captured USB devices */
7238	if (aReason == Uninit::Abnormal && lastState >= MachineState_Running)
7239	{
7240	/* Console::captureUSBDevices() is called in the VM process only after
7241	* setting the machine state to Starting or Restoring.
7242	* Console::detachAllUSBDevices() will be called upon successful
7243	* termination. So, we need to release USB devices only if there was
7244	* an abnormal termination of a running VM. */
7245	DetachAllUSBDevices (TRUE /* aDone */);
7246	}
7247
7248	if (!mData->mSession.mType.isNull())
7249	{
7250	/* mType is not null when this machine's process has been started by
7251	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
7252	* need to queue the PID to reap the process (and avoid zombies on
7253	* Linux). */
7254	Assert (mData->mSession.mPid != NIL_RTPROCESS);
7255	mParent->addProcessToReap (mData->mSession.mPid);
7256	}
7257
7258	mData->mSession.mPid = NIL_RTPROCESS;
7259
7260	if (aReason == Uninit::Unexpected)
7261	{
7262	/* Uninitialization didn't come from #checkForDeath(), so tell the
7263	* client watcher thread to update the set of machines that have open
7264	* sessions. */
7265	mParent->updateClientWatcher();
7266	}
7267
7268	/* uninitialize all remote controls */
7269	if (mData->mSession.mRemoteControls.size())
7270	{
7271	LogFlowThisFunc (("Closing remote sessions (%d):\n",
7272	mData->mSession.mRemoteControls.size()));
7273
7274	Data::Session::RemoteControlList::iterator it =
7275	mData->mSession.mRemoteControls.begin();
7276	while (it != mData->mSession.mRemoteControls.end())
7277	{
7278	LogFlowThisFunc ((" Calling remoteControl->Uninitialize()...\n"));
7279	HRESULT rc = (*it)->Uninitialize();
7280	LogFlowThisFunc ((" remoteControl->Uninitialize() returned %08X\n", rc));
7281	if (FAILED (rc))
7282	LogWarningThisFunc (("Forgot to close the remote session?\n"));
7283	++ it;
7284	}
7285	mData->mSession.mRemoteControls.clear();
7286	}
7287
7288	/*
7289	* An expected uninitialization can come only from #checkForDeath().
7290	* Otherwise it means that something's got really wrong (for examlple,
7291	* the Session implementation has released the VirtualBox reference
7292	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
7293	* etc). However, it's also possible, that the client releases the IPC
7294	* semaphore correctly (i.e. before it releases the VirtualBox reference),
7295	* but but the VirtualBox release event comes first to the server process.
7296	* This case is practically possible, so we should not assert on an
7297	* unexpected uninit, just log a warning.
7298	*/
7299
7300	if ((aReason == Uninit::Unexpected))
7301	LogWarningThisFunc (("Unexpected SessionMachine uninitialization!\n"));
7302
7303	if (aReason != Uninit::Normal)
7304	mData->mSession.mDirectControl.setNull();
7305	else
7306	{
7307	/* this must be null here (see #OnSessionEnd()) */
7308	Assert (mData->mSession.mDirectControl.isNull());
7309	Assert (mData->mSession.mState == SessionState_SessionClosing);
7310	Assert (!mData->mSession.mProgress.isNull());
7311
7312	mData->mSession.mProgress->notifyComplete (S_OK);
7313	mData->mSession.mProgress.setNull();
7314	}
7315
7316	/* remove the association between the peer machine and this session machine */
7317	Assert (mData->mSession.mMachine == this \|\|
7318	aReason == Uninit::Unexpected);
7319
7320	/* reset the rest of session data */
7321	mData->mSession.mMachine.setNull();
7322	mData->mSession.mState = SessionState_SessionClosed;
7323	mData->mSession.mType.setNull();
7324
7325	/* close the interprocess semaphore before leaving the shared lock */
7326	#if defined(RT_OS_WINDOWS)
7327	if (mIPCSem)
7328	::CloseHandle (mIPCSem);
7329	mIPCSem = NULL;
7330	#elif defined(RT_OS_OS2)
7331	if (mIPCSem != NULLHANDLE)
7332	::DosCloseMutexSem (mIPCSem);
7333	mIPCSem = NULLHANDLE;
7334	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7335	if (mIPCSem >= 0)
7336	::semctl (mIPCSem, 0, IPC_RMID);
7337	mIPCSem = -1;
7338	#else
7339	# error "Port me!"
7340	#endif
7341
7342	/* fire an event */
7343	mParent->onSessionStateChange (mData->mUuid, SessionState_SessionClosed);
7344
7345	uninitDataAndChildObjects();
7346
7347	/* free the essential data structure last */
7348	mData.free();
7349
7350	/* leave the shared lock before setting the below two to NULL */
7351	alock.leave();
7352
7353	unconst (mParent).setNull();
7354	unconst (mPeer).setNull();
7355
7356	LogFlowThisFuncLeave();
7357	}
7358
7359	// AutoLock::Lockable interface
7360	////////////////////////////////////////////////////////////////////////////////
7361
7362	/**
7363	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
7364	* with the primary Machine instance (mPeer).
7365	*/
7366	AutoLock::Handle *SessionMachine::lockHandle() const
7367	{
7368	AssertReturn (!mPeer.isNull(), NULL);
7369	return mPeer->lockHandle();
7370	}
7371
7372	// IInternalMachineControl methods
7373	////////////////////////////////////////////////////////////////////////////////
7374
7375	/**
7376	* @note Locks the same as #setMachineState() does.
7377	*/
7378	STDMETHODIMP SessionMachine::UpdateState (MachineState_T machineState)
7379	{
7380	return setMachineState (machineState);
7381	}
7382
7383	/**
7384	* @note Locks this object for reading.
7385	*/
7386	STDMETHODIMP SessionMachine::GetIPCId (BSTR *id)
7387	{
7388	AutoCaller autoCaller (this);
7389	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7390
7391	AutoReaderLock alock (this);
7392
7393	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
7394	mIPCSemName.cloneTo (id);
7395	return S_OK;
7396	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7397	mData->mConfigFileFull.cloneTo (id);
7398	return S_OK;
7399	#else
7400	# error "Port me!"
7401	#endif
7402	}
7403
7404	/**
7405	* Goes through the USB filters of the given machine to see if the given
7406	* device matches any filter or not.
7407	*
7408	* @note Locks the same as USBController::hasMatchingFilter() does.
7409	*/
7410	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
7411	BOOL *aMatched,
7412	ULONG *aMaskedIfs)
7413	{
7414	LogFlowThisFunc (("\n"));
7415
7416	if (!aUSBDevice)
7417	return E_INVALIDARG;
7418	if (!aMatched)
7419	return E_POINTER;
7420
7421	AutoCaller autoCaller (this);
7422	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7423
7424	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
7425
7426	return S_OK;
7427	}
7428
7429	/**
7430	* @note Locks the same as Host::captureUSBDevice() does.
7431	*/
7432	STDMETHODIMP SessionMachine::CaptureUSBDevice (INPTR GUIDPARAM aId)
7433	{
7434	LogFlowThisFunc (("\n"));
7435
7436	AutoCaller autoCaller (this);
7437	AssertComRCReturnRC (autoCaller.rc());
7438
7439	/* if cautureUSBDevice() fails, it must have set extended error info */
7440	return mParent->host()->captureUSBDevice (this, aId);
7441	}
7442
7443	/**
7444	* @note Locks the same as Host::detachUSBDevice() does.
7445	*/
7446	STDMETHODIMP SessionMachine::DetachUSBDevice (INPTR GUIDPARAM aId, BOOL aDone)
7447	{
7448	LogFlowThisFunc (("\n"));
7449
7450	AutoCaller autoCaller (this);
7451	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7452
7453	return mParent->host()->detachUSBDevice (this, aId, aDone);
7454	}
7455
7456	/**
7457	* Inserts all machine filters to the USB proxy service and then calls
7458	* Host::autoCaptureUSBDevices().
7459	*
7460	* Called by Console from the VM process upon VM startup.
7461	*
7462	* @note Locks what called methods lock.
7463	*/
7464	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
7465	{
7466	LogFlowThisFunc (("\n"));
7467
7468	AutoCaller autoCaller (this);
7469	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7470
7471	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
7472	AssertComRC (rc);
7473	NOREF (rc);
7474
7475	return mParent->host()->autoCaptureUSBDevices (this);
7476	}
7477
7478	/**
7479	* Removes all machine filters from the USB proxy service and then calls
7480	* Host::detachAllUSBDevices().
7481	*
7482	* Called by Console from the VM process upon normal VM termination or by
7483	* SessionMachine::uninit() upon abnormal VM termination (from under the
7484	* Machine/SessionMachine lock).
7485	*
7486	* @note Locks what called methods lock.
7487	*/
7488	STDMETHODIMP SessionMachine::DetachAllUSBDevices(BOOL aDone)
7489	{
7490	LogFlowThisFunc (("\n"));
7491
7492	AutoCaller autoCaller (this);
7493	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7494
7495	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
7496	AssertComRC (rc);
7497	NOREF (rc);
7498
7499	return mParent->host()->detachAllUSBDevices (this, aDone);
7500	}
7501
7502	/**
7503	* @note Locks mParent + this object for writing.
7504	*/
7505	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
7506	IProgress **aProgress)
7507	{
7508	LogFlowThisFuncEnter();
7509
7510	AssertReturn (aSession, E_INVALIDARG);
7511	AssertReturn (aProgress, E_INVALIDARG);
7512
7513	AutoCaller autoCaller (this);
7514
7515	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
7516	/*
7517	* We don't assert below because it might happen that a non-direct session
7518	* informs us it is closed right after we've been uninitialized -- it's ok.
7519	*/
7520	CheckComRCReturnRC (autoCaller.rc());
7521
7522	/* get IInternalSessionControl interface */
7523	ComPtr <IInternalSessionControl> control (aSession);
7524
7525	ComAssertRet (!control.isNull(), E_INVALIDARG);
7526
7527	/* Progress::init() needs mParent lock */
7528	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7529
7530	if (control.equalsTo (mData->mSession.mDirectControl))
7531	{
7532	ComAssertRet (aProgress, E_POINTER);
7533
7534	/* The direct session is being normally closed by the client process
7535	* ----------------------------------------------------------------- */
7536
7537	/* go to the closing state (essential for all open*Session() calls and
7538	* for #checkForDeath()) */
7539	Assert (mData->mSession.mState == SessionState_SessionOpen);
7540	mData->mSession.mState = SessionState_SessionClosing;
7541
7542	/* set direct control to NULL to release the remote instance */
7543	mData->mSession.mDirectControl.setNull();
7544	LogFlowThisFunc (("Direct control is set to NULL\n"));
7545
7546	/*
7547	* Create the progress object the client will use to wait until
7548	* #checkForDeath() is called to uninitialize this session object
7549	* after it releases the IPC semaphore.
7550	*/
7551	ComObjPtr <Progress> progress;
7552	progress.createObject();
7553	progress->init (mParent, (IMachine *) mPeer, Bstr (tr ("Closing session")),
7554	FALSE /* aCancelable */);
7555	progress.queryInterfaceTo (aProgress);
7556	mData->mSession.mProgress = progress;
7557	}
7558	else
7559	{
7560	/* the remote session is being normally closed */
7561	Data::Session::RemoteControlList::iterator it =
7562	mData->mSession.mRemoteControls.begin();
7563	while (it != mData->mSession.mRemoteControls.end())
7564	{
7565	if (control.equalsTo (*it))
7566	break;
7567	++it;
7568	}
7569	BOOL found = it != mData->mSession.mRemoteControls.end();
7570	ComAssertMsgRet (found, ("The session is not found in the session list!"),
7571	E_INVALIDARG);
7572	mData->mSession.mRemoteControls.remove (*it);
7573	}
7574
7575	LogFlowThisFuncLeave();
7576	return S_OK;
7577	}
7578
7579	/**
7580	* @note Locks mParent + this object for writing.
7581	*/
7582	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
7583	{
7584	LogFlowThisFuncEnter();
7585
7586	AssertReturn (aProgress, E_INVALIDARG);
7587	AssertReturn (aStateFilePath, E_POINTER);
7588
7589	AutoCaller autoCaller (this);
7590	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7591
7592	/* mParent->addProgress() needs mParent lock */
7593	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7594
7595	AssertReturn (mData->mMachineState == MachineState_Paused &&
7596	mSnapshotData.mLastState == MachineState_InvalidMachineState &&
7597	mSnapshotData.mProgressId.isEmpty() &&
7598	mSnapshotData.mStateFilePath.isNull(),
7599	E_FAIL);
7600
7601	/* memorize the progress ID and add it to the global collection */
7602	Guid progressId;
7603	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
7604	AssertComRCReturn (rc, rc);
7605	rc = mParent->addProgress (aProgress);
7606	AssertComRCReturn (rc, rc);
7607
7608	Bstr stateFilePath;
7609	/* stateFilePath is null when the machine is not running */
7610	if (mData->mMachineState == MachineState_Paused)
7611	{
7612	stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
7613	mUserData->mSnapshotFolderFull.raw(),
7614	RTPATH_DELIMITER, mData->mUuid.raw());
7615	}
7616
7617	/* fill in the snapshot data */
7618	mSnapshotData.mLastState = mData->mMachineState;
7619	mSnapshotData.mProgressId = progressId;
7620	mSnapshotData.mStateFilePath = stateFilePath;
7621
7622	/* set the state to Saving (this is expected by Console::SaveState()) */
7623	setMachineState (MachineState_Saving);
7624
7625	stateFilePath.cloneTo (aStateFilePath);
7626
7627	return S_OK;
7628	}
7629
7630	/**
7631	* @note Locks mParent + this objects for writing.
7632	*/
7633	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
7634	{
7635	LogFlowThisFunc (("\n"));
7636
7637	AutoCaller autoCaller (this);
7638	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7639
7640	/* endSavingState() need mParent lock */
7641	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7642
7643	AssertReturn (mData->mMachineState == MachineState_Saving &&
7644	mSnapshotData.mLastState != MachineState_InvalidMachineState &&
7645	!mSnapshotData.mProgressId.isEmpty() &&
7646	!mSnapshotData.mStateFilePath.isNull(),
7647	E_FAIL);
7648
7649	/*
7650	* on success, set the state to Saved;
7651	* on failure, set the state to the state we had when BeginSavingState() was
7652	* called (this is expected by Console::SaveState() and
7653	* Console::saveStateThread())
7654	*/
7655	if (aSuccess)
7656	setMachineState (MachineState_Saved);
7657	else
7658	setMachineState (mSnapshotData.mLastState);
7659
7660	return endSavingState (aSuccess);
7661	}
7662
7663	/**
7664	* @note Locks this objects for writing.
7665	*/
7666	STDMETHODIMP SessionMachine::AdoptSavedState (INPTR BSTR aSavedStateFile)
7667	{
7668	LogFlowThisFunc (("\n"));
7669
7670	AssertReturn (aSavedStateFile, E_INVALIDARG);
7671
7672	AutoCaller autoCaller (this);
7673	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7674
7675	AutoLock alock (this);
7676
7677	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
7678	mData->mMachineState == MachineState_Aborted,
7679	E_FAIL);
7680
7681	Utf8Str stateFilePathFull = aSavedStateFile;
7682	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
7683	if (VBOX_FAILURE (vrc))
7684	return setError (E_FAIL,
7685	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
7686	aSavedStateFile, vrc);
7687
7688	mSSData->mStateFilePath = stateFilePathFull;
7689
7690	/* The below setMachineState() will detect the state transition and will
7691	* update the settings file */
7692
7693	return setMachineState (MachineState_Saved);
7694	}
7695
7696	/**
7697	* @note Locks mParent + this objects for writing.
7698	*/
7699	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
7700	IConsole *aInitiator, INPTR BSTR aName, INPTR BSTR aDescription,
7701	IProgress aProgress, BSTR aStateFilePath,
7702	IProgress **aServerProgress)
7703	{
7704	LogFlowThisFuncEnter();
7705
7706	AssertReturn (aInitiator && aName, E_INVALIDARG);
7707	AssertReturn (aStateFilePath && aServerProgress, E_POINTER);
7708
7709	LogFlowThisFunc (("aName='%ls'\n", aName));
7710
7711	AutoCaller autoCaller (this);
7712	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7713
7714	/* Progress::init() needs mParent lock */
7715	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7716
7717	AssertReturn ((mData->mMachineState < MachineState_Running \|\|
7718	mData->mMachineState == MachineState_Paused) &&
7719	mSnapshotData.mLastState == MachineState_InvalidMachineState &&
7720	mSnapshotData.mSnapshot.isNull() &&
7721	mSnapshotData.mServerProgress.isNull() &&
7722	mSnapshotData.mCombinedProgress.isNull(),
7723	E_FAIL);
7724
7725	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
7726
7727	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
7728	{
7729	/*
7730	* save all current settings to ensure current changes are committed
7731	* and hard disks are fixed up
7732	*/
7733	HRESULT rc = saveSettings();
7734	CheckComRCReturnRC (rc);
7735	}
7736
7737	/* check that there are no Writethrough hard disks attached */
7738	for (HDData::HDAttachmentList::const_iterator
7739	it = mHDData->mHDAttachments.begin();
7740	it != mHDData->mHDAttachments.end();
7741	++ it)
7742	{
7743	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
7744	AutoLock hdLock (hd);
7745	if (hd->type() == HardDiskType_WritethroughHardDisk)
7746	return setError (E_FAIL,
7747	tr ("Cannot take a snapshot when there is a Writethrough hard "
7748	" disk attached ('%ls')"), hd->toString().raw());
7749	}
7750
7751	AssertReturn (aProgress \|\| !takingSnapshotOnline, E_FAIL);
7752
7753	/* create an ID for the snapshot */
7754	Guid snapshotId;
7755	snapshotId.create();
7756
7757	Bstr stateFilePath;
7758	/* stateFilePath is null when the machine is not online nor saved */
7759	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
7760	stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
7761	mUserData->mSnapshotFolderFull.raw(),
7762	RTPATH_DELIMITER,
7763	snapshotId.ptr());
7764
7765	/* ensure the directory for the saved state file exists */
7766	if (stateFilePath)
7767	{
7768	Utf8Str dir = stateFilePath;
7769	RTPathStripFilename (dir.mutableRaw());
7770	if (!RTDirExists (dir))
7771	{
7772	int vrc = RTDirCreateFullPath (dir, 0777);
7773	if (VBOX_FAILURE (vrc))
7774	return setError (E_FAIL,
7775	tr ("Could not create a directory '%s' to save the "
7776	"VM state to (%Vrc)"),
7777	dir.raw(), vrc);
7778	}
7779	}
7780
7781	/* create a snapshot machine object */
7782	ComObjPtr <SnapshotMachine> snapshotMachine;
7783	snapshotMachine.createObject();
7784	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
7785	AssertComRCReturn (rc, rc);
7786
7787	Bstr progressDesc = Bstr (tr ("Taking snapshot of virtual machine"));
7788	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
7789
7790	/*
7791	* create a server-side progress object (it will be descriptionless
7792	* when we need to combine it with the VM-side progress, i.e. when we're
7793	* taking a snapshot online). The number of operations is:
7794	* 1 (preparing) + # of VDIs + 1 (if the state is saved so we need to copy it)
7795	*/
7796	ComObjPtr <Progress> serverProgress;
7797	{
7798	ULONG opCount = 1 + mHDData->mHDAttachments.size();
7799	if (mData->mMachineState == MachineState_Saved)
7800	opCount ++;
7801	serverProgress.createObject();
7802	if (takingSnapshotOnline)
7803	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
7804	else
7805	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
7806	opCount, firstOpDesc);
7807	AssertComRCReturn (rc, rc);
7808	}
7809
7810	/* create a combined server-side progress object when necessary */
7811	ComObjPtr <CombinedProgress> combinedProgress;
7812	if (takingSnapshotOnline)
7813	{
7814	combinedProgress.createObject();
7815	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
7816	serverProgress, aProgress);
7817	AssertComRCReturn (rc, rc);
7818	}
7819
7820	/* create a snapshot object */
7821	RTTIMESPEC time;
7822	ComObjPtr <Snapshot> snapshot;
7823	snapshot.createObject();
7824	rc = snapshot->init (snapshotId, aName, aDescription,
7825	*RTTimeNow (&time), snapshotMachine,
7826	mData->mCurrentSnapshot);
7827	AssertComRCReturnRC (rc);
7828
7829	/*
7830	* create and start the task on a separate thread
7831	* (note that it will not start working until we release alock)
7832	*/
7833	TakeSnapshotTask *task = new TakeSnapshotTask (this);
7834	int vrc = RTThreadCreate (NULL, taskHandler,
7835	(void *) task,
7836	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
7837	if (VBOX_FAILURE (vrc))
7838	{
7839	snapshot->uninit();
7840	delete task;
7841	ComAssertFailedRet (E_FAIL);
7842	}
7843
7844	/* fill in the snapshot data */
7845	mSnapshotData.mLastState = mData->mMachineState;
7846	mSnapshotData.mSnapshot = snapshot;
7847	mSnapshotData.mServerProgress = serverProgress;
7848	mSnapshotData.mCombinedProgress = combinedProgress;
7849
7850	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
7851	setMachineState (MachineState_Saving);
7852
7853	if (takingSnapshotOnline)
7854	stateFilePath.cloneTo (aStateFilePath);
7855	else
7856	*aStateFilePath = NULL;
7857
7858	serverProgress.queryInterfaceTo (aServerProgress);
7859
7860	LogFlowThisFuncLeave();
7861	return S_OK;
7862	}
7863
7864	/**
7865	* @note Locks mParent + this objects for writing.
7866	*/
7867	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
7868	{
7869	LogFlowThisFunc (("\n"));
7870
7871	AutoCaller autoCaller (this);
7872	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7873
7874	/* Lock mParent because of endTakingSnapshot() */
7875	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7876
7877	AssertReturn (!aSuccess \|\|
7878	(mData->mMachineState == MachineState_Saving &&
7879	mSnapshotData.mLastState != MachineState_InvalidMachineState &&
7880	!mSnapshotData.mSnapshot.isNull() &&
7881	!mSnapshotData.mServerProgress.isNull() &&
7882	!mSnapshotData.mCombinedProgress.isNull()),
7883	E_FAIL);
7884
7885	/*
7886	* set the state to the state we had when BeginTakingSnapshot() was called
7887	* (this is expected by Console::TakeSnapshot() and
7888	* Console::saveStateThread())
7889	*/
7890	setMachineState (mSnapshotData.mLastState);
7891
7892	return endTakingSnapshot (aSuccess);
7893	}
7894
7895	/**
7896	* @note Locks mParent + this + children objects for writing!
7897	*/
7898	STDMETHODIMP SessionMachine::DiscardSnapshot (
7899	IConsole *aInitiator, INPTR GUIDPARAM aId,
7900	MachineState_T aMachineState, IProgress *aProgress)
7901	{
7902	LogFlowThisFunc (("\n"));
7903
7904	Guid id = aId;
7905	AssertReturn (aInitiator && !id.isEmpty(), E_INVALIDARG);
7906	AssertReturn (aMachineState && aProgress, E_POINTER);
7907
7908	AutoCaller autoCaller (this);
7909	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7910
7911	/* Progress::init() needs mParent lock */
7912	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7913
7914	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
7915
7916	ComObjPtr <Snapshot> snapshot;
7917	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
7918	CheckComRCReturnRC (rc);
7919
7920	AutoLock snapshotLock (snapshot);
7921	if (snapshot == mData->mFirstSnapshot)
7922	{
7923	AutoLock chLock (mData->mFirstSnapshot->childrenLock());
7924	size_t childrenCount = mData->mFirstSnapshot->children().size();
7925	if (childrenCount > 1)
7926	return setError (E_FAIL,
7927	tr ("Cannot discard the snapshot '%ls' because it is the first "
7928	"snapshot of the machine '%ls' and it has more than one "
7929	"child snapshot (%d)"),
7930	snapshot->data().mName.raw(), mUserData->mName.raw(),
7931	childrenCount);
7932	}
7933
7934	/*
7935	* If the snapshot being discarded is the current one, ensure current
7936	* settings are committed and saved.
7937	*/
7938	if (snapshot == mData->mCurrentSnapshot)
7939	{
7940	if (isModified())
7941	{
7942	rc = saveSettings();
7943	CheckComRCReturnRC (rc);
7944	}
7945	}
7946
7947	/*
7948	* create a progress object. The number of operations is:
7949	* 1 (preparing) + # of VDIs
7950	*/
7951	ComObjPtr <Progress> progress;
7952	progress.createObject();
7953	rc = progress->init (mParent, aInitiator,
7954	Bstr (Utf8StrFmt (tr ("Discarding snapshot '%ls'"),
7955	snapshot->data().mName.raw())),
7956	FALSE /* aCancelable */,
7957	1 + snapshot->data().mMachine->mHDData->mHDAttachments.size(),
7958	Bstr (tr ("Preparing to discard snapshot")));
7959	AssertComRCReturn (rc, rc);
7960
7961	/* create and start the task on a separate thread */
7962	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
7963	int vrc = RTThreadCreate (NULL, taskHandler,
7964	(void *) task,
7965	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
7966	if (VBOX_FAILURE (vrc))
7967	delete task;
7968	ComAssertRCRet (vrc, E_FAIL);
7969
7970	/* set the proper machine state (note: after creating a Task instance) */
7971	setMachineState (MachineState_Discarding);
7972
7973	/* return the progress to the caller */
7974	progress.queryInterfaceTo (aProgress);
7975
7976	/* return the new state to the caller */
7977	*aMachineState = mData->mMachineState;
7978
7979	return S_OK;
7980	}
7981
7982	/**
7983	* @note Locks mParent + this + children objects for writing!
7984	*/
7985	STDMETHODIMP SessionMachine::DiscardCurrentState (
7986	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
7987	{
7988	LogFlowThisFunc (("\n"));
7989
7990	AssertReturn (aInitiator, E_INVALIDARG);
7991	AssertReturn (aMachineState && aProgress, E_POINTER);
7992
7993	AutoCaller autoCaller (this);
7994	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7995
7996	/* Progress::init() needs mParent lock */
7997	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7998
7999	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
8000
8001	if (mData->mCurrentSnapshot.isNull())
8002	return setError (E_FAIL,
8003	tr ("Could not discard the current state of the machine '%ls' "
8004	"because it doesn't have any snapshots"),
8005	mUserData->mName.raw());
8006
8007	/*
8008	* create a progress object. The number of operations is:
8009	* 1 (preparing) + # of VDIs + 1 (if we need to copy the saved state file)
8010	*/
8011	ComObjPtr <Progress> progress;
8012	progress.createObject();
8013	{
8014	ULONG opCount = 1 + mData->mCurrentSnapshot->data()
8015	.mMachine->mHDData->mHDAttachments.size();
8016	if (mData->mCurrentSnapshot->stateFilePath())
8017	++ opCount;
8018	progress->init (mParent, aInitiator,
8019	Bstr (tr ("Discarding current machine state")),
8020	FALSE /* aCancelable */, opCount,
8021	Bstr (tr ("Preparing to discard current state")));
8022	}
8023
8024	/* create and start the task on a separate thread */
8025	DiscardCurrentStateTask *task =
8026	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
8027	int vrc = RTThreadCreate (NULL, taskHandler,
8028	(void *) task,
8029	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
8030	if (VBOX_FAILURE (vrc))
8031	delete task;
8032	ComAssertRCRet (vrc, E_FAIL);
8033
8034	/* set the proper machine state (note: after creating a Task instance) */
8035	setMachineState (MachineState_Discarding);
8036
8037	/* return the progress to the caller */
8038	progress.queryInterfaceTo (aProgress);
8039
8040	/* return the new state to the caller */
8041	*aMachineState = mData->mMachineState;
8042
8043	return S_OK;
8044	}
8045
8046	/**
8047	* @note Locks mParent + other objects for writing!
8048	*/
8049	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState (
8050	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
8051	{
8052	LogFlowThisFunc (("\n"));
8053
8054	AssertReturn (aInitiator, E_INVALIDARG);
8055	AssertReturn (aMachineState && aProgress, E_POINTER);
8056
8057	AutoCaller autoCaller (this);
8058	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8059
8060	/* Progress::init() needs mParent lock */
8061	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8062
8063	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
8064
8065	if (mData->mCurrentSnapshot.isNull())
8066	return setError (E_FAIL,
8067	tr ("Could not discard the current state of the machine '%ls' "
8068	"because it doesn't have any snapshots"),
8069	mUserData->mName.raw());
8070
8071	/*
8072	* create a progress object. The number of operations is:
8073	* 1 (preparing) + # of VDIs in the current snapshot +
8074	* # of VDIs in the previous snapshot +
8075	* 1 (if we need to copy the saved state file of the previous snapshot)
8076	* or (if there is no previous snapshot):
8077	* 1 (preparing) + # of VDIs in the current snapshot * 2 +
8078	* 1 (if we need to copy the saved state file of the current snapshot)
8079	*/
8080	ComObjPtr <Progress> progress;
8081	progress.createObject();
8082	{
8083	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
8084	ComObjPtr <Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
8085
8086	ULONG opCount = 1;
8087	if (prevSnapshot)
8088	{
8089	opCount += curSnapshot->data().mMachine->mHDData->mHDAttachments.size();
8090	opCount += prevSnapshot->data().mMachine->mHDData->mHDAttachments.size();
8091	if (prevSnapshot->stateFilePath())
8092	++ opCount;
8093	}
8094	else
8095	{
8096	opCount += curSnapshot->data().mMachine->mHDData->mHDAttachments.size() * 2;
8097	if (curSnapshot->stateFilePath())
8098	++ opCount;
8099	}
8100
8101	progress->init (mParent, aInitiator,
8102	Bstr (tr ("Discarding current machine snapshot and state")),
8103	FALSE /* aCancelable */, opCount,
8104	Bstr (tr ("Preparing to discard current snapshot and state")));
8105	}
8106
8107	/* create and start the task on a separate thread */
8108	DiscardCurrentStateTask *task =
8109	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
8110	int vrc = RTThreadCreate (NULL, taskHandler,
8111	(void *) task,
8112	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
8113	if (VBOX_FAILURE (vrc))
8114	delete task;
8115	ComAssertRCRet (vrc, E_FAIL);
8116
8117	/* set the proper machine state (note: after creating a Task instance) */
8118	setMachineState (MachineState_Discarding);
8119
8120	/* return the progress to the caller */
8121	progress.queryInterfaceTo (aProgress);
8122
8123	/* return the new state to the caller */
8124	*aMachineState = mData->mMachineState;
8125
8126	return S_OK;
8127	}
8128
8129	// public methods only for internal purposes
8130	/////////////////////////////////////////////////////////////////////////////
8131
8132	/**
8133	* Called from the client watcher thread to check for unexpected client
8134	* process death.
8135	*
8136	* @note On Win32 and on OS/2, this method is called only when we've got the
8137	* mutex (i.e. the client has either died or terminated normally). This
8138	* method always returns true.
8139	*
8140	* @note On Linux, the method returns true if the client process has
8141	* terminated abnormally (and/or the session has been uninitialized) and
8142	* false if it is still alive.
8143	*
8144	* @note Locks this object for writing.
8145	*/
8146	bool SessionMachine::checkForDeath()
8147	{
8148	Uninit::Reason reason;
8149	bool doUninit = false;
8150	bool ret = false;
8151
8152	/*
8153	* Enclose autoCaller with a block because calling uninit()
8154	* from under it will deadlock.
8155	*/
8156	{
8157	AutoCaller autoCaller (this);
8158	if (!autoCaller.isOk())
8159	{
8160	/*
8161	* return true if not ready, to cause the client watcher to exclude
8162	* the corresponding session from watching
8163	*/
8164	LogFlowThisFunc (("Already uninitialized!"));
8165	return true;
8166	}
8167
8168	AutoLock alock (this);
8169
8170	/*
8171	* Determine the reason of death: if the session state is Closing here,
8172	* everything is fine. Otherwise it means that the client did not call
8173	* OnSessionEnd() before it released the IPC semaphore.
8174	* This may happen either because the client process has abnormally
8175	* terminated, or because it simply forgot to call ISession::Close()
8176	* before exiting. We threat the latter also as an abnormal termination
8177	* (see Session::uninit() for details).
8178	*/
8179	reason = mData->mSession.mState == SessionState_SessionClosing ?
8180	Uninit::Normal :
8181	Uninit::Abnormal;
8182
8183	#if defined(RT_OS_WINDOWS)
8184
8185	AssertMsg (mIPCSem, ("semaphore must be created"));
8186
8187	/* release the IPC mutex */
8188	::ReleaseMutex (mIPCSem);
8189
8190	doUninit = true;
8191
8192	ret = true;
8193
8194	#elif defined(RT_OS_OS2)
8195
8196	AssertMsg (mIPCSem, ("semaphore must be created"));
8197
8198	/* release the IPC mutex */
8199	::DosReleaseMutexSem (mIPCSem);
8200
8201	doUninit = true;
8202
8203	ret = true;
8204
8205	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8206
8207	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
8208
8209	int val = ::semctl (mIPCSem, 0, GETVAL);
8210	if (val > 0)
8211	{
8212	/* the semaphore is signaled, meaning the session is terminated */
8213	doUninit = true;
8214	}
8215
8216	ret = val > 0;
8217
8218	#else
8219	# error "Port me!"
8220	#endif
8221
8222	} /* AutoCaller block */
8223
8224	if (doUninit)
8225	uninit (reason);
8226
8227	return ret;
8228	}
8229
8230	/**
8231	* @note Locks this object for reading.
8232	*/
8233	HRESULT SessionMachine::onDVDDriveChange()
8234	{
8235	LogFlowThisFunc (("\n"));
8236
8237	AutoCaller autoCaller (this);
8238	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8239
8240	ComPtr <IInternalSessionControl> directControl;
8241	{
8242	AutoReaderLock alock (this);
8243	directControl = mData->mSession.mDirectControl;
8244	}
8245
8246	/* ignore notifications sent after #OnSessionEnd() is called */
8247	if (!directControl)
8248	return S_OK;
8249
8250	return directControl->OnDVDDriveChange();
8251	}
8252
8253	/**
8254	* @note Locks this object for reading.
8255	*/
8256	HRESULT SessionMachine::onFloppyDriveChange()
8257	{
8258	LogFlowThisFunc (("\n"));
8259
8260	AutoCaller autoCaller (this);
8261	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8262
8263	ComPtr <IInternalSessionControl> directControl;
8264	{
8265	AutoReaderLock alock (this);
8266	directControl = mData->mSession.mDirectControl;
8267	}
8268
8269	/* ignore notifications sent after #OnSessionEnd() is called */
8270	if (!directControl)
8271	return S_OK;
8272
8273	return directControl->OnFloppyDriveChange();
8274	}
8275
8276	/**
8277	* @note Locks this object for reading.
8278	*/
8279	HRESULT SessionMachine::onNetworkAdapterChange(INetworkAdapter *networkAdapter)
8280	{
8281	LogFlowThisFunc (("\n"));
8282
8283	AutoCaller autoCaller (this);
8284	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8285
8286	ComPtr <IInternalSessionControl> directControl;
8287	{
8288	AutoReaderLock alock (this);
8289	directControl = mData->mSession.mDirectControl;
8290	}
8291
8292	/* ignore notifications sent after #OnSessionEnd() is called */
8293	if (!directControl)
8294	return S_OK;
8295
8296	return directControl->OnNetworkAdapterChange(networkAdapter);
8297	}
8298
8299	/**
8300	* @note Locks this object for reading.
8301	*/
8302	HRESULT SessionMachine::onSerialPortChange(ISerialPort *serialPort)
8303	{
8304	LogFlowThisFunc (("\n"));
8305
8306	AutoCaller autoCaller (this);
8307	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8308
8309	ComPtr <IInternalSessionControl> directControl;
8310	{
8311	AutoReaderLock alock (this);
8312	directControl = mData->mSession.mDirectControl;
8313	}
8314
8315	/* ignore notifications sent after #OnSessionEnd() is called */
8316	if (!directControl)
8317	return S_OK;
8318
8319	return directControl->OnSerialPortChange(serialPort);
8320	}
8321
8322	/**
8323	* @note Locks this object for reading.
8324	*/
8325	HRESULT SessionMachine::onParallelPortChange(IParallelPort *parallelPort)
8326	{
8327	LogFlowThisFunc (("\n"));
8328
8329	AutoCaller autoCaller (this);
8330	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8331
8332	ComPtr <IInternalSessionControl> directControl;
8333	{
8334	AutoReaderLock alock (this);
8335	directControl = mData->mSession.mDirectControl;
8336	}
8337
8338	/* ignore notifications sent after #OnSessionEnd() is called */
8339	if (!directControl)
8340	return S_OK;
8341
8342	return directControl->OnParallelPortChange(parallelPort);
8343	}
8344
8345	/**
8346	* @note Locks this object for reading.
8347	*/
8348	HRESULT SessionMachine::onVRDPServerChange()
8349	{
8350	LogFlowThisFunc (("\n"));
8351
8352	AutoCaller autoCaller (this);
8353	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8354
8355	ComPtr <IInternalSessionControl> directControl;
8356	{
8357	AutoReaderLock alock (this);
8358	directControl = mData->mSession.mDirectControl;
8359	}
8360
8361	/* ignore notifications sent after #OnSessionEnd() is called */
8362	if (!directControl)
8363	return S_OK;
8364
8365	return directControl->OnVRDPServerChange();
8366	}
8367
8368	/**
8369	* @note Locks this object for reading.
8370	*/
8371	HRESULT SessionMachine::onUSBControllerChange()
8372	{
8373	LogFlowThisFunc (("\n"));
8374
8375	AutoCaller autoCaller (this);
8376	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8377
8378	ComPtr <IInternalSessionControl> directControl;
8379	{
8380	AutoReaderLock alock (this);
8381	directControl = mData->mSession.mDirectControl;
8382	}
8383
8384	/* ignore notifications sent after #OnSessionEnd() is called */
8385	if (!directControl)
8386	return S_OK;
8387
8388	return directControl->OnUSBControllerChange();
8389	}
8390
8391	/**
8392	* @note Locks this object for reading.
8393	*/
8394	HRESULT SessionMachine::onSharedFolderChange()
8395	{
8396	LogFlowThisFunc (("\n"));
8397
8398	AutoCaller autoCaller (this);
8399	AssertComRCReturnRC (autoCaller.rc());
8400
8401	ComPtr <IInternalSessionControl> directControl;
8402	{
8403	AutoReaderLock alock (this);
8404	directControl = mData->mSession.mDirectControl;
8405	}
8406
8407	/* ignore notifications sent after #OnSessionEnd() is called */
8408	if (!directControl)
8409	return S_OK;
8410
8411	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
8412	}
8413
8414	/**
8415	* Returns @c true if this machine's USB controller reports it has a matching
8416	* filter for the given USB device and @c false otherwise.
8417	*
8418	* @note Locks this object for reading.
8419	*/
8420	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr <HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
8421	{
8422	AutoCaller autoCaller (this);
8423	/* silently return if not ready -- this method may be called after the
8424	* direct machine session has been called */
8425	if (!autoCaller.isOk())
8426	return false;
8427
8428	AutoReaderLock alock (this);
8429
8430	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
8431	}
8432
8433	/**
8434	* @note Locks this object for reading.
8435	*/
8436	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
8437	IVirtualBoxErrorInfo *aError,
8438	ULONG aMaskedIfs)
8439	{
8440	LogFlowThisFunc (("\n"));
8441
8442	AutoCaller autoCaller (this);
8443
8444	/* This notification may happen after the machine object has been
8445	* uninitialized (the session was closed), so don't assert. */
8446	CheckComRCReturnRC (autoCaller.rc());
8447
8448	ComPtr <IInternalSessionControl> directControl;
8449	{
8450	AutoReaderLock alock (this);
8451	directControl = mData->mSession.mDirectControl;
8452	}
8453
8454	/* fail on notifications sent after #OnSessionEnd() is called, it is
8455	* expected by the caller */
8456	if (!directControl)
8457	return E_FAIL;
8458
8459	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
8460	}
8461
8462	/**
8463	* @note Locks this object for reading.
8464	*/
8465	HRESULT SessionMachine::onUSBDeviceDetach (INPTR GUIDPARAM aId,
8466	IVirtualBoxErrorInfo *aError)
8467	{
8468	LogFlowThisFunc (("\n"));
8469
8470	AutoCaller autoCaller (this);
8471
8472	/* This notification may happen after the machine object has been
8473	* uninitialized (the session was closed), so don't assert. */
8474	CheckComRCReturnRC (autoCaller.rc());
8475
8476	ComPtr <IInternalSessionControl> directControl;
8477	{
8478	AutoReaderLock alock (this);
8479	directControl = mData->mSession.mDirectControl;
8480	}
8481
8482	/* fail on notifications sent after #OnSessionEnd() is called, it is
8483	* expected by the caller */
8484	if (!directControl)
8485	return E_FAIL;
8486
8487	return directControl->OnUSBDeviceDetach (aId, aError);
8488	}
8489
8490	// protected methods
8491	/////////////////////////////////////////////////////////////////////////////
8492
8493	/**
8494	* Helper method to finalize saving the state.
8495	*
8496	* @note Must be called from under this object's lock.
8497	*
8498	* @param aSuccess TRUE if the snapshot has been taken successfully
8499	*
8500	* @note Locks mParent + this objects for writing.
8501	*/
8502	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
8503	{
8504	LogFlowThisFuncEnter();
8505
8506	AutoCaller autoCaller (this);
8507	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8508
8509	/* mParent->removeProgress() and saveSettings() need mParent lock */
8510	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8511
8512	HRESULT rc = S_OK;
8513
8514	if (aSuccess)
8515	{
8516	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
8517
8518	/* save all VM settings */
8519	rc = saveSettings();
8520	}
8521	else
8522	{
8523	/* delete the saved state file (it might have been already created) */
8524	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
8525	}
8526
8527	/* remove the completed progress object */
8528	mParent->removeProgress (mSnapshotData.mProgressId);
8529
8530	/* clear out the temporary saved state data */
8531	mSnapshotData.mLastState = MachineState_InvalidMachineState;
8532	mSnapshotData.mProgressId.clear();
8533	mSnapshotData.mStateFilePath.setNull();
8534
8535	LogFlowThisFuncLeave();
8536	return rc;
8537	}
8538
8539	/**
8540	* Helper method to finalize taking a snapshot.
8541	* Gets called only from #EndTakingSnapshot() that is expected to
8542	* be called by the VM process when it finishes all the tasks related to
8543	* taking a snapshot, either scucessfully or unsuccessfilly.
8544	*
8545	* @param aSuccess TRUE if the snapshot has been taken successfully
8546	*
8547	* @note Locks mParent + this objects for writing.
8548	*/
8549	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
8550	{
8551	LogFlowThisFuncEnter();
8552
8553	AutoCaller autoCaller (this);
8554	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8555
8556	/* Progress object uninitialization needs mParent lock */
8557	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8558
8559	HRESULT rc = S_OK;
8560
8561	if (aSuccess)
8562	{
8563	/* the server progress must be completed on success */
8564	Assert (mSnapshotData.mServerProgress->completed());
8565
8566	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
8567	/* memorize the first snapshot if necessary */
8568	if (!mData->mFirstSnapshot)
8569	mData->mFirstSnapshot = mData->mCurrentSnapshot;
8570
8571	int opFlags = SaveSS_AddOp \| SaveSS_UpdateCurrentId;
8572	if (mSnapshotData.mLastState != MachineState_Paused && !isModified())
8573	{
8574	/*
8575	* the machine was powered off or saved when taking a snapshot,
8576	* so reset the mCurrentStateModified flag
8577	*/
8578	mData->mCurrentStateModified = FALSE;
8579	opFlags \|= SaveSS_UpdateCurStateModified;
8580	}
8581
8582	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
8583	}
8584
8585	if (!aSuccess \|\| FAILED (rc))
8586	{
8587	if (mSnapshotData.mSnapshot)
8588	{
8589	/* wait for the completion of the server progress (diff VDI creation) */
8590	/// @todo (dmik) later, we will definitely want to cancel it instead
8591	// (when the cancel function is implemented)
8592	mSnapshotData.mServerProgress->WaitForCompletion (-1);
8593
8594	/*
8595	* delete all differencing VDIs created
8596	* (this will attach their parents back)
8597	*/
8598	rc = deleteSnapshotDiffs (mSnapshotData.mSnapshot);
8599	/* continue cleanup on error */
8600
8601	/* delete the saved state file (it might have been already created) */
8602	if (mSnapshotData.mSnapshot->stateFilePath())
8603	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
8604
8605	mSnapshotData.mSnapshot->uninit();
8606	}
8607	}
8608
8609	/* inform callbacks */
8610	if (aSuccess && SUCCEEDED (rc))
8611	mParent->onSnapshotTaken (mData->mUuid, mSnapshotData.mSnapshot->data().mId);
8612
8613	/* clear out the snapshot data */
8614	mSnapshotData.mLastState = MachineState_InvalidMachineState;
8615	mSnapshotData.mSnapshot.setNull();
8616	mSnapshotData.mServerProgress.setNull();
8617	/* uninitialize the combined progress (to remove it from the VBox collection) */
8618	if (!mSnapshotData.mCombinedProgress.isNull())
8619	{
8620	mSnapshotData.mCombinedProgress->uninit();
8621	mSnapshotData.mCombinedProgress.setNull();
8622	}
8623
8624	LogFlowThisFuncLeave();
8625	return rc;
8626	}
8627
8628	/**
8629	* Take snapshot task handler.
8630	* Must be called only by TakeSnapshotTask::handler()!
8631	*
8632	* The sole purpose of this task is to asynchronously create differencing VDIs
8633	* and copy the saved state file (when necessary). The VM process will wait
8634	* for this task to complete using the mSnapshotData.mServerProgress
8635	* returned to it.
8636	*
8637	* @note Locks mParent + this objects for writing.
8638	*/
8639	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask &aTask)
8640	{
8641	LogFlowThisFuncEnter();
8642
8643	AutoCaller autoCaller (this);
8644
8645	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8646	if (!autoCaller.isOk())
8647	{
8648	/*
8649	* we might have been uninitialized because the session was
8650	* accidentally closed by the client, so don't assert
8651	*/
8652	LogFlowThisFuncLeave();
8653	return;
8654	}
8655
8656	/* endTakingSnapshot() needs mParent lock */
8657	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8658
8659	HRESULT rc = S_OK;
8660
8661	LogFlowThisFunc (("Creating differencing VDIs...\n"));
8662
8663	/* create new differencing hard disks and attach them to this machine */
8664	rc = createSnapshotDiffs (&mSnapshotData.mSnapshot->data().mId,
8665	mUserData->mSnapshotFolderFull,
8666	mSnapshotData.mServerProgress,
8667	true /* aOnline */);
8668
8669	if (SUCCEEDED (rc) && mSnapshotData.mLastState == MachineState_Saved)
8670	{
8671	Utf8Str stateFrom = mSSData->mStateFilePath;
8672	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
8673
8674	LogFlowThisFunc (("Copying the execution state from '%s' to '%s'...\n",
8675	stateFrom.raw(), stateTo.raw()));
8676
8677	mSnapshotData.mServerProgress->advanceOperation (
8678	Bstr (tr ("Copying the execution state")));
8679
8680	/*
8681	* We can safely leave the lock here:
8682	* mMachineState is MachineState_Saving here
8683	*/
8684	alock.leave();
8685
8686	/* copy the state file */
8687	int vrc = RTFileCopyEx (stateFrom, stateTo, progressCallback,
8688	static_cast <Progress *> (mSnapshotData.mServerProgress));
8689
8690	alock.enter();
8691
8692	if (VBOX_FAILURE (vrc))
8693	rc = setError (E_FAIL,
8694	tr ("Could not copy the state file '%ls' to '%ls' (%Vrc)"),
8695	stateFrom.raw(), stateTo.raw());
8696	}
8697
8698	/*
8699	* we have to call endTakingSnapshot() here if the snapshot was taken
8700	* offline, because the VM process will not do it in this case
8701	*/
8702	if (mSnapshotData.mLastState != MachineState_Paused)
8703	{
8704	LogFlowThisFunc (("Finalizing the taken snapshot (rc=%08X)...\n", rc));
8705
8706	setMachineState (mSnapshotData.mLastState);
8707	updateMachineStateOnClient();
8708
8709	/* finalize the progress after setting the state, for consistency */
8710	mSnapshotData.mServerProgress->notifyComplete (rc);
8711
8712	endTakingSnapshot (SUCCEEDED (rc));
8713	}
8714	else
8715	{
8716	mSnapshotData.mServerProgress->notifyComplete (rc);
8717	}
8718
8719	LogFlowThisFuncLeave();
8720	}
8721
8722	/**
8723	* Discard snapshot task handler.
8724	* Must be called only by DiscardSnapshotTask::handler()!
8725	*
8726	* When aTask.subTask is true, the associated progress object is left
8727	* uncompleted on success. On failure, the progress is marked as completed
8728	* regardless of this parameter.
8729	*
8730	* @note Locks mParent + this + child objects for writing!
8731	*/
8732	void SessionMachine::discardSnapshotHandler (DiscardSnapshotTask &aTask)
8733	{
8734	LogFlowThisFuncEnter();
8735
8736	AutoCaller autoCaller (this);
8737
8738	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8739	if (!autoCaller.isOk())
8740	{
8741	/*
8742	* we might have been uninitialized because the session was
8743	* accidentally closed by the client, so don't assert
8744	*/
8745	aTask.progress->notifyComplete (
8746	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
8747	tr ("The session has been accidentally closed"));
8748
8749	LogFlowThisFuncLeave();
8750	return;
8751	}
8752
8753	ComObjPtr <SnapshotMachine> sm = aTask.snapshot->data().mMachine;
8754
8755	/* Progress::notifyComplete() et al., saveSettings() need mParent lock */
8756	AutoMultiLock <3> alock (mParent->wlock(), this->wlock(), sm->rlock());
8757
8758	/* Safe locking in the direction parent->child */
8759	AutoLock snapshotLock (aTask.snapshot);
8760	AutoLock snapshotChildrenLock (aTask.snapshot->childrenLock());
8761
8762	HRESULT rc = S_OK;
8763
8764	/* save the snapshot ID (for callbacks) */
8765	Guid snapshotId = aTask.snapshot->data().mId;
8766
8767	do
8768	{
8769	/* first pass: */
8770	LogFlowThisFunc (("Check hard disk accessibility and affected machines...\n"));
8771
8772	HDData::HDAttachmentList::const_iterator it;
8773	for (it = sm->mHDData->mHDAttachments.begin();
8774	it != sm->mHDData->mHDAttachments.end();
8775	++ it)
8776	{
8777	ComObjPtr <HardDiskAttachment> hda = *it;
8778	ComObjPtr <HardDisk> hd = hda->hardDisk();
8779	ComObjPtr <HardDisk> parent = hd->parent();
8780
8781	AutoLock hdLock (hd);
8782
8783	if (hd->hasForeignChildren())
8784	{
8785	rc = setError (E_FAIL,
8786	tr ("One or more hard disks belonging to other machines are "
8787	"based on the hard disk '%ls' stored in the snapshot '%ls'"),
8788	hd->toString().raw(), aTask.snapshot->data().mName.raw());
8789	break;
8790	}
8791
8792	if (hd->type() == HardDiskType_NormalHardDisk)
8793	{
8794	AutoLock hdChildrenLock (hd->childrenLock());
8795	size_t childrenCount = hd->children().size();
8796	if (childrenCount > 1)
8797	{
8798	rc = setError (E_FAIL,
8799	tr ("Normal hard disk '%ls' stored in the snapshot '%ls' "
8800	"has more than one child hard disk (%d)"),
8801	hd->toString().raw(), aTask.snapshot->data().mName.raw(),
8802	childrenCount);
8803	break;
8804	}
8805	}
8806	else
8807	{
8808	ComAssertMsgFailedBreak (("Invalid hard disk type %d\n", hd->type()),
8809	rc = E_FAIL);
8810	}
8811
8812	Bstr accessError;
8813	rc = hd->getAccessibleWithChildren (accessError);
8814	CheckComRCBreakRC (rc);
8815
8816	if (!accessError.isNull())
8817	{
8818	rc = setError (E_FAIL,
8819	tr ("Hard disk '%ls' stored in the snapshot '%ls' is not "
8820	"accessible (%ls)"),
8821	hd->toString().raw(), aTask.snapshot->data().mName.raw(),
8822	accessError.raw());
8823	break;
8824	}
8825
8826	rc = hd->setBusyWithChildren();
8827	if (FAILED (rc))
8828	{
8829	/* reset the busy flag of all previous hard disks */
8830	while (it != sm->mHDData->mHDAttachments.begin())
8831	(*(-- it))->hardDisk()->clearBusyWithChildren();
8832	break;
8833	}
8834	}
8835
8836	CheckComRCBreakRC (rc);
8837
8838	/* second pass: */
8839	LogFlowThisFunc (("Performing actual vdi merging...\n"));
8840
8841	for (it = sm->mHDData->mHDAttachments.begin();
8842	it != sm->mHDData->mHDAttachments.end();
8843	++ it)
8844	{
8845	ComObjPtr <HardDiskAttachment> hda = *it;
8846	ComObjPtr <HardDisk> hd = hda->hardDisk();
8847	ComObjPtr <HardDisk> parent = hd->parent();
8848
8849	AutoLock hdLock (hd);
8850
8851	Bstr hdRootString = hd->root()->toString (true /* aShort */);
8852
8853	if (parent)
8854	{
8855	if (hd->isParentImmutable())
8856	{
8857	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
8858	tr ("Discarding changes to immutable hard disk '%ls'"),
8859	hdRootString.raw())));
8860
8861	/* clear the busy flag before unregistering */
8862	hd->clearBusy();
8863
8864	/*
8865	* unregisterDiffHardDisk() is supposed to delete and uninit
8866	* the differencing hard disk
8867	*/
8868	rc = mParent->unregisterDiffHardDisk (hd);
8869	CheckComRCBreakRC (rc);
8870	continue;
8871	}
8872	else
8873	{
8874	/*
8875	* differencing VDI:
8876	* merge this image to all its children
8877	*/
8878
8879	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
8880	tr ("Merging changes to normal hard disk '%ls' to children"),
8881	hdRootString.raw())));
8882
8883	snapshotChildrenLock.unlock();
8884	snapshotLock.unlock();
8885	alock.leave();
8886
8887	rc = hd->asVDI()->mergeImageToChildren (aTask.progress);
8888
8889	alock.enter();
8890	snapshotLock.lock();
8891	snapshotChildrenLock.lock();
8892
8893	// debug code
8894	// if (it != sm->mHDData->mHDAttachments.begin())
8895	// {
8896	// rc = setError (E_FAIL, "Simulated failure");
8897	// break;
8898	//}
8899
8900	if (SUCCEEDED (rc))
8901	rc = mParent->unregisterDiffHardDisk (hd);
8902	else
8903	hd->clearBusyWithChildren();
8904
8905	CheckComRCBreakRC (rc);
8906	}
8907	}
8908	else if (hd->type() == HardDiskType_NormalHardDisk)
8909	{
8910	/*
8911	* normal vdi has the only child or none
8912	* (checked in the first pass)
8913	*/
8914
8915	ComObjPtr <HardDisk> child;
8916	{
8917	AutoLock hdChildrenLock (hd->childrenLock());
8918	if (hd->children().size())
8919	child = hd->children().front();
8920	}
8921
8922	if (child.isNull())
8923	{
8924	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
8925	tr ("Detaching normal hard disk '%ls'"),
8926	hdRootString.raw())));
8927
8928	/* just deassociate the normal image from this machine */
8929	hd->setMachineId (Guid());
8930	hd->setSnapshotId (Guid());
8931
8932	/* clear the busy flag */
8933	hd->clearBusy();
8934	}
8935	else
8936	{
8937	AutoLock childLock (child);
8938
8939	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
8940	tr ("Preserving changes to normal hard disk '%ls'"),
8941	hdRootString.raw())));
8942
8943	ComObjPtr <Machine> cm;
8944	ComObjPtr <Snapshot> cs;
8945	ComObjPtr <HardDiskAttachment> childHda;
8946	rc = findHardDiskAttachment (child, &cm, &cs, &childHda);
8947	CheckComRCBreakRC (rc);
8948	/* must be the same machine (checked in the first pass) */
8949	ComAssertBreak (cm->mData->mUuid == mData->mUuid, rc = E_FAIL);
8950
8951	/* merge the child to this basic image */
8952
8953	snapshotChildrenLock.unlock();
8954	snapshotLock.unlock();
8955	alock.leave();
8956
8957	rc = child->asVDI()->mergeImageToParent (aTask.progress);
8958
8959	alock.enter();
8960	snapshotLock.lock();
8961	snapshotChildrenLock.lock();
8962
8963	if (SUCCEEDED (rc))
8964	rc = mParent->unregisterDiffHardDisk (child);
8965	else
8966	hd->clearBusyWithChildren();
8967
8968	CheckComRCBreakRC (rc);
8969
8970	/* reset the snapshot Id */
8971	hd->setSnapshotId (Guid());
8972
8973	/* replace the child image in the appropriate place */
8974	childHda->updateHardDisk (hd, FALSE /* aDirty */);
8975
8976	if (!cs)
8977	{
8978	aTask.settingsChanged = true;
8979	}
8980	else
8981	{
8982	rc = cm->saveSnapshotSettings (cs, SaveSS_UpdateAllOp);
8983	CheckComRCBreakRC (rc);
8984	}
8985	}
8986	}
8987	else
8988	{
8989	ComAssertMsgFailedBreak (("Invalid hard disk type %d\n", hd->type()),
8990	rc = E_FAIL);
8991	}
8992	}
8993
8994	/* preserve existing error info */
8995	ErrorInfoKeeper mergeEik;
8996	HRESULT mergeRc = rc;
8997
8998	if (FAILED (rc))
8999	{
9000	/* clear the busy flag on the rest of hard disks */
9001	for (++ it; it != sm->mHDData->mHDAttachments.end(); ++ it)
9002	(*it)->hardDisk()->clearBusyWithChildren();
9003	}
9004
9005	/*
9006	* we have to try to discard the snapshot even if merging failed
9007	* because some images might have been already merged (and deleted)
9008	*/
9009
9010	do
9011	{
9012	LogFlowThisFunc (("Discarding the snapshot (reparenting children)...\n"));
9013
9014	/* It is important to uninitialize and delete all snapshot's hard
9015	* disk attachments as they are no longer valid -- otherwise the
9016	* code in Machine::uninitDataAndChildObjects() will mistakenly
9017	* perform hard disk deassociation. */
9018	for (HDData::HDAttachmentList::iterator it = sm->mHDData->mHDAttachments.begin();
9019	it != sm->mHDData->mHDAttachments.end();)
9020	{
9021	(*it)->uninit();
9022	it = sm->mHDData->mHDAttachments.erase (it);
9023	}
9024
9025	ComObjPtr <Snapshot> parentSnapshot = aTask.snapshot->parent();
9026
9027	/// @todo (dmik):
9028	// when we introduce clones later, discarding the snapshot
9029	// will affect the current and first snapshots of clones, if they are
9030	// direct children of this snapshot. So we will need to lock machines
9031	// associated with child snapshots as well and update mCurrentSnapshot
9032	// and/or mFirstSnapshot fields.
9033
9034	if (aTask.snapshot == mData->mCurrentSnapshot)
9035	{
9036	/* currently, the parent snapshot must refer to the same machine */
9037	ComAssertBreak (
9038	!parentSnapshot \|\|
9039	parentSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
9040	rc = E_FAIL);
9041	mData->mCurrentSnapshot = parentSnapshot;
9042	/* mark the current state as modified */
9043	mData->mCurrentStateModified = TRUE;
9044	}
9045
9046	if (aTask.snapshot == mData->mFirstSnapshot)
9047	{
9048	/*
9049	* the first snapshot must have only one child when discarded,
9050	* or no children at all
9051	*/
9052	ComAssertBreak (aTask.snapshot->children().size() <= 1, rc = E_FAIL);
9053
9054	if (aTask.snapshot->children().size() == 1)
9055	{
9056	ComObjPtr <Snapshot> childSnapshot = aTask.snapshot->children().front();
9057	ComAssertBreak (
9058	childSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
9059	rc = E_FAIL);
9060	mData->mFirstSnapshot = childSnapshot;
9061	}
9062	else
9063	mData->mFirstSnapshot.setNull();
9064	}
9065
9066	/// @todo (dmik)
9067	// if we implement some warning mechanism later, we'll have
9068	// to return a warning if the state file path cannot be deleted
9069	Bstr stateFilePath = aTask.snapshot->stateFilePath();
9070	if (stateFilePath)
9071	RTFileDelete (Utf8Str (stateFilePath));
9072
9073	aTask.snapshot->discard();
9074
9075	rc = saveSnapshotSettings (parentSnapshot,
9076	SaveSS_UpdateAllOp \| SaveSS_UpdateCurrentId);
9077	}
9078	while (0);
9079
9080	/* restore the merge error if any (ErrorInfo will be restored
9081	* automatically) */
9082	if (FAILED (mergeRc))
9083	rc = mergeRc;
9084	}
9085	while (0);
9086
9087	if (!aTask.subTask \|\| FAILED (rc))
9088	{
9089	if (!aTask.subTask)
9090	{
9091	/* preserve existing error info */
9092	ErrorInfoKeeper eik;
9093
9094	/* restore the machine state */
9095	setMachineState (aTask.state);
9096	updateMachineStateOnClient();
9097
9098	/*
9099	* save settings anyway, since we've already changed the current
9100	* machine configuration
9101	*/
9102	if (aTask.settingsChanged)
9103	{
9104	saveSettings (true /* aMarkCurStateAsModified */,
9105	true /* aInformCallbacksAnyway */);
9106	}
9107	}
9108
9109	/* set the result (this will try to fetch current error info on failure) */
9110	aTask.progress->notifyComplete (rc);
9111	}
9112
9113	if (SUCCEEDED (rc))
9114	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
9115
9116	LogFlowThisFunc (("Done discarding snapshot (rc=%08X)\n", rc));
9117	LogFlowThisFuncLeave();
9118	}
9119
9120	/**
9121	* Discard current state task handler.
9122	* Must be called only by DiscardCurrentStateTask::handler()!
9123	*
9124	* @note Locks mParent + this object for writing.
9125	*/
9126	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
9127	{
9128	LogFlowThisFuncEnter();
9129
9130	AutoCaller autoCaller (this);
9131
9132	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
9133	if (!autoCaller.isOk())
9134	{
9135	/*
9136	* we might have been uninitialized because the session was
9137	* accidentally closed by the client, so don't assert
9138	*/
9139	aTask.progress->notifyComplete (
9140	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
9141	tr ("The session has been accidentally closed"));
9142
9143	LogFlowThisFuncLeave();
9144	return;
9145	}
9146
9147	/* Progress::notifyComplete() et al., saveSettings() need mParent lock */
9148	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9149
9150	/*
9151	* discard all current changes to mUserData (name, OSType etc.)
9152	* (note that the machine is powered off, so there is no need
9153	* to inform the direct session)
9154	*/
9155	if (isModified())
9156	rollback (false /* aNotify */);
9157
9158	HRESULT rc = S_OK;
9159
9160	bool errorInSubtask = false;
9161	bool stateRestored = false;
9162
9163	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
9164
9165	do
9166	{
9167	/*
9168	* discard the saved state file if the machine was Saved prior
9169	* to this operation
9170	*/
9171	if (aTask.state == MachineState_Saved)
9172	{
9173	Assert (!mSSData->mStateFilePath.isEmpty());
9174	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
9175	mSSData->mStateFilePath.setNull();
9176	aTask.modifyLastState (MachineState_PoweredOff);
9177	rc = saveStateSettings (SaveSTS_StateFilePath);
9178	CheckComRCBreakRC (rc);
9179	}
9180
9181	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
9182	{
9183	/*
9184	* the "discard current snapshot and state" task is in action,
9185	* the current snapshot is not the last one.
9186	* Discard the current snapshot first.
9187	*/
9188
9189	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
9190	subTask.subTask = true;
9191	discardSnapshotHandler (subTask);
9192	aTask.settingsChanged = subTask.settingsChanged;
9193	if (aTask.progress->completed())
9194	{
9195	/*
9196	* the progress can be completed by a subtask only if there was
9197	* a failure
9198	*/
9199	Assert (FAILED (aTask.progress->resultCode()));
9200	errorInSubtask = true;
9201	rc = aTask.progress->resultCode();
9202	break;
9203	}
9204	}
9205
9206	RTTIMESPEC snapshotTimeStamp;
9207	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
9208
9209	{
9210	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
9211	AutoLock snapshotLock (curSnapshot);
9212
9213	/* remember the timestamp of the snapshot we're restoring from */
9214	snapshotTimeStamp = curSnapshot->data().mTimeStamp;
9215
9216	/* copy all hardware data from the current snapshot */
9217	copyFrom (curSnapshot->data().mMachine);
9218
9219	LogFlowThisFunc (("Restoring VDIs from the snapshot...\n"));
9220
9221	/* restore the attachmends from the snapshot */
9222	mHDData.backup();
9223	mHDData->mHDAttachments =
9224	curSnapshot->data().mMachine->mHDData->mHDAttachments;
9225
9226	snapshotLock.unlock();
9227	alock.leave();
9228	rc = createSnapshotDiffs (NULL, mUserData->mSnapshotFolderFull,
9229	aTask.progress,
9230	false /* aOnline */);
9231	alock.enter();
9232	snapshotLock.lock();
9233
9234	if (FAILED (rc))
9235	{
9236	/* here we can still safely rollback, so do it */
9237	/* preserve existing error info */
9238	ErrorInfoKeeper eik;
9239	/* undo all changes */
9240	rollback (false /* aNotify */);
9241	break;
9242	}
9243
9244	/*
9245	* note: old VDIs will be deassociated/deleted on #commit() called
9246	* either from #saveSettings() or directly at the end
9247	*/
9248
9249	/* should not have a saved state file associated at this point */
9250	Assert (mSSData->mStateFilePath.isNull());
9251
9252	if (curSnapshot->stateFilePath())
9253	{
9254	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
9255
9256	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
9257	mUserData->mSnapshotFolderFull.raw(),
9258	RTPATH_DELIMITER, mData->mUuid.raw());
9259
9260	LogFlowThisFunc (("Copying saved state file from '%s' to '%s'...\n",
9261	snapStateFilePath.raw(), stateFilePath.raw()));
9262
9263	aTask.progress->advanceOperation (
9264	Bstr (tr ("Restoring the execution state")));
9265
9266	/* copy the state file */
9267	snapshotLock.unlock();
9268	alock.leave();
9269	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
9270	progressCallback, aTask.progress);
9271	alock.enter();
9272	snapshotLock.lock();
9273
9274	if (VBOX_SUCCESS (vrc))
9275	{
9276	mSSData->mStateFilePath = stateFilePath;
9277	}
9278	else
9279	{
9280	rc = setError (E_FAIL,
9281	tr ("Could not copy the state file '%s' to '%s' (%Vrc)"),
9282	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
9283	break;
9284	}
9285	}
9286	}
9287
9288	bool informCallbacks = false;
9289
9290	if (aTask.discardCurrentSnapshot && isLastSnapshot)
9291	{
9292	/*
9293	* discard the current snapshot and state task is in action,
9294	* the current snapshot is the last one.
9295	* Discard the current snapshot after discarding the current state.
9296	*/
9297
9298	/* commit changes to fixup hard disks before discarding */
9299	rc = commit();
9300	if (SUCCEEDED (rc))
9301	{
9302	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
9303	subTask.subTask = true;
9304	discardSnapshotHandler (subTask);
9305	aTask.settingsChanged = subTask.settingsChanged;
9306	if (aTask.progress->completed())
9307	{
9308	/*
9309	* the progress can be completed by a subtask only if there
9310	* was a failure
9311	*/
9312	Assert (FAILED (aTask.progress->resultCode()));
9313	errorInSubtask = true;
9314	rc = aTask.progress->resultCode();
9315	}
9316	}
9317
9318	/*
9319	* we've committed already, so inform callbacks anyway to ensure
9320	* they don't miss some change
9321	*/
9322	informCallbacks = true;
9323	}
9324
9325	/*
9326	* we have already discarded the current state, so set the
9327	* execution state accordingly no matter of the discard snapshot result
9328	*/
9329	if (mSSData->mStateFilePath)
9330	setMachineState (MachineState_Saved);
9331	else
9332	setMachineState (MachineState_PoweredOff);
9333
9334	updateMachineStateOnClient();
9335	stateRestored = true;
9336
9337	if (errorInSubtask)
9338	break;
9339
9340	/* assign the timestamp from the snapshot */
9341	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
9342	mData->mLastStateChange = snapshotTimeStamp;
9343
9344	/* mark the current state as not modified */
9345	mData->mCurrentStateModified = FALSE;
9346
9347	/* save all settings and commit */
9348	rc = saveSettings (false /* aMarkCurStateAsModified */,
9349	informCallbacks);
9350	aTask.settingsChanged = false;
9351	}
9352	while (0);
9353
9354	if (FAILED (rc))
9355	{
9356	/* preserve existing error info */
9357	ErrorInfoKeeper eik;
9358
9359	if (!stateRestored)
9360	{
9361	/* restore the machine state */
9362	setMachineState (aTask.state);
9363	updateMachineStateOnClient();
9364	}
9365
9366	/*
9367	* save all settings and commit if still modified (there is no way to
9368	* rollback properly). Note that isModified() will return true after
9369	* copyFrom(). Also save the settings if requested by the subtask.
9370	*/
9371	if (isModified() \|\| aTask.settingsChanged)
9372	{
9373	if (aTask.settingsChanged)
9374	saveSettings (true /* aMarkCurStateAsModified */,
9375	true /* aInformCallbacksAnyway */);
9376	else
9377	saveSettings();
9378	}
9379	}
9380
9381	if (!errorInSubtask)
9382	{
9383	/* set the result (this will try to fetch current error info on failure) */
9384	aTask.progress->notifyComplete (rc);
9385	}
9386
9387	if (SUCCEEDED (rc))
9388	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
9389
9390	LogFlowThisFunc (("Done discarding current state (rc=%08X)\n", rc));
9391
9392	LogFlowThisFuncLeave();
9393	}
9394
9395	/**
9396	* Helper to change the machine state (reimplementation).
9397	*
9398	* @note Locks this object for writing.
9399	*/
9400	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
9401	{
9402	LogFlowThisFuncEnter();
9403	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
9404
9405	AutoCaller autoCaller (this);
9406	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9407
9408	AutoLock alock (this);
9409
9410	MachineState_T oldMachineState = mData->mMachineState;
9411
9412	AssertMsgReturn (oldMachineState != aMachineState,
9413	("oldMachineState=%d, aMachineState=%d\n",
9414	oldMachineState, aMachineState), E_FAIL);
9415
9416	HRESULT rc = S_OK;
9417
9418	int stsFlags = 0;
9419	bool deleteSavedState = false;
9420
9421	/* detect some state transitions */
9422
9423	if (oldMachineState < MachineState_Running &&
9424	aMachineState >= MachineState_Running &&
9425	aMachineState != MachineState_Discarding)
9426	{
9427	/*
9428	* the EMT thread is about to start, so mark attached HDDs as busy
9429	* and all its ancestors as being in use
9430	*/
9431	for (HDData::HDAttachmentList::const_iterator it =
9432	mHDData->mHDAttachments.begin();
9433	it != mHDData->mHDAttachments.end();
9434	++ it)
9435	{
9436	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
9437	AutoLock hdLock (hd);
9438	hd->setBusy();
9439	hd->addReaderOnAncestors();
9440	}
9441	}
9442	else
9443	if (oldMachineState >= MachineState_Running &&
9444	oldMachineState != MachineState_Discarding &&
9445	aMachineState < MachineState_Running)
9446	{
9447	/*
9448	* the EMT thread stopped, so mark attached HDDs as no more busy
9449	* and remove the in-use flag from all its ancestors
9450	*/
9451	for (HDData::HDAttachmentList::const_iterator it =
9452	mHDData->mHDAttachments.begin();
9453	it != mHDData->mHDAttachments.end();
9454	++ it)
9455	{
9456	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
9457	AutoLock hdLock (hd);
9458	hd->releaseReaderOnAncestors();
9459	hd->clearBusy();
9460	}
9461	}
9462
9463	if (oldMachineState == MachineState_Restoring)
9464	{
9465	if (aMachineState != MachineState_Saved)
9466	{
9467	/*
9468	* delete the saved state file once the machine has finished
9469	* restoring from it (note that Console sets the state from
9470	* Restoring to Saved if the VM couldn't restore successfully,
9471	* to give the user an ability to fix an error and retry --
9472	* we keep the saved state file in this case)
9473	*/
9474	deleteSavedState = true;
9475	}
9476	}
9477	else
9478	if (oldMachineState == MachineState_Saved &&
9479	(aMachineState == MachineState_PoweredOff \|\|
9480	aMachineState == MachineState_Aborted))
9481	{
9482	/*
9483	* delete the saved state after Console::DiscardSavedState() is called
9484	* or if the VM process (owning a direct VM session) crashed while the
9485	* VM was Saved
9486	*/
9487
9488	/// @todo (dmik)
9489	// Not sure that deleting the saved state file just because of the
9490	// client death before it attempted to restore the VM is a good
9491	// thing. But when it crashes we need to go to the Aborted state
9492	// which cannot have the saved state file associated... The only
9493	// way to fix this is to make the Aborted condition not a VM state
9494	// but a bool flag: i.e., when a crash occurs, set it to true and
9495	// change the state to PoweredOff or Saved depending on the
9496	// saved state presence.
9497
9498	deleteSavedState = true;
9499	mData->mCurrentStateModified = TRUE;
9500	stsFlags \|= SaveSTS_CurStateModified;
9501	}
9502
9503	if (aMachineState == MachineState_Starting \|\|
9504	aMachineState == MachineState_Restoring)
9505	{
9506	/*
9507	* set the current state modified flag to indicate that the
9508	* current state is no more identical to the state in the
9509	* current snapshot
9510	*/
9511	if (!mData->mCurrentSnapshot.isNull())
9512	{
9513	mData->mCurrentStateModified = TRUE;
9514	stsFlags \|= SaveSTS_CurStateModified;
9515	}
9516	}
9517
9518	if (deleteSavedState == true)
9519	{
9520	Assert (!mSSData->mStateFilePath.isEmpty());
9521	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
9522	mSSData->mStateFilePath.setNull();
9523	stsFlags \|= SaveSTS_StateFilePath;
9524	}
9525
9526	/* redirect to the underlying peer machine */
9527	mPeer->setMachineState (aMachineState);
9528
9529	if (aMachineState == MachineState_PoweredOff \|\|
9530	aMachineState == MachineState_Aborted \|\|
9531	aMachineState == MachineState_Saved)
9532	{
9533	/* the machine has stopped execution
9534	* (or the saved state file was adopted) */
9535	stsFlags \|= SaveSTS_StateTimeStamp;
9536	}
9537
9538	if ((oldMachineState == MachineState_PoweredOff \|\|
9539	oldMachineState == MachineState_Aborted) &&
9540	aMachineState == MachineState_Saved)
9541	{
9542	/* the saved state file was adopted */
9543	Assert (!mSSData->mStateFilePath.isNull());
9544	stsFlags \|= SaveSTS_StateFilePath;
9545	}
9546
9547	rc = saveStateSettings (stsFlags);
9548
9549	if ((oldMachineState != MachineState_PoweredOff &&
9550	oldMachineState != MachineState_Aborted) &&
9551	(aMachineState == MachineState_PoweredOff \|\|
9552	aMachineState == MachineState_Aborted))
9553	{
9554	/*
9555	* clear differencing hard disks based on immutable hard disks
9556	* once we've been shut down for any reason
9557	*/
9558	rc = wipeOutImmutableDiffs();
9559	}
9560
9561	LogFlowThisFunc (("rc=%08X\n", rc));
9562	LogFlowThisFuncLeave();
9563	return rc;
9564	}
9565
9566	/**
9567	* Sends the current machine state value to the VM process.
9568	*
9569	* @note Locks this object for reading, then calls a client process.
9570	*/
9571	HRESULT SessionMachine::updateMachineStateOnClient()
9572	{
9573	AutoCaller autoCaller (this);
9574	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9575
9576	ComPtr <IInternalSessionControl> directControl;
9577	{
9578	AutoReaderLock alock (this);
9579	AssertReturn (!!mData, E_FAIL);
9580	directControl = mData->mSession.mDirectControl;
9581
9582	/* directControl may be already set to NULL here in #OnSessionEnd()
9583	* called too early by the direct session process while there is still
9584	* some operation (like discarding the snapshot) in progress. The client
9585	* process in this case is waiting inside Session::close() for the
9586	* "end session" process object to complete, while #uninit() called by
9587	* #checkForDeath() on the Watcher thread is waiting for the pending
9588	* operation to complete. For now, we accept this inconsitent behavior
9589	* and simply do nothing here. */
9590
9591	if (mData->mSession.mState == SessionState_SessionClosing)
9592	return S_OK;
9593
9594	AssertReturn (!directControl.isNull(), E_FAIL);
9595	}
9596
9597	return directControl->UpdateMachineState (mData->mMachineState);
9598	}
9599
9600	/* static */
9601	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD thread, void *pvUser)
9602	{
9603	AssertReturn (pvUser, VERR_INVALID_POINTER);
9604
9605	Task task = static_cast <Task > (pvUser);
9606	task->handler();
9607
9608	// it's our responsibility to delete the task
9609	delete task;
9610
9611	return 0;
9612	}
9613
9614	/////////////////////////////////////////////////////////////////////////////
9615	// SnapshotMachine class
9616	/////////////////////////////////////////////////////////////////////////////
9617
9618	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
9619
9620	HRESULT SnapshotMachine::FinalConstruct()
9621	{
9622	LogFlowThisFunc (("\n"));
9623
9624	/* set the proper type to indicate we're the SnapshotMachine instance */
9625	unconst (mType) = IsSnapshotMachine;
9626
9627	return S_OK;
9628	}
9629
9630	void SnapshotMachine::FinalRelease()
9631	{
9632	LogFlowThisFunc (("\n"));
9633
9634	uninit();
9635	}
9636
9637	/**
9638	* Initializes the SnapshotMachine object when taking a snapshot.
9639	*
9640	* @param aSessionMachine machine to take a snapshot from
9641	* @param aSnapshotId snapshot ID of this snapshot machine
9642	* @param aStateFilePath file where the execution state will be later saved
9643	* (or NULL for the offline snapshot)
9644	*
9645	* @note Locks aSessionMachine object for reading.
9646	*/
9647	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
9648	INPTR GUIDPARAM aSnapshotId,
9649	INPTR BSTR aStateFilePath)
9650	{
9651	LogFlowThisFuncEnter();
9652	LogFlowThisFunc (("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
9653
9654	AssertReturn (aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
9655
9656	/* Enclose the state transition NotReady->InInit->Ready */
9657	AutoInitSpan autoInitSpan (this);
9658	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
9659
9660	mSnapshotId = aSnapshotId;
9661
9662	AutoReaderLock alock (aSessionMachine);
9663
9664	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
9665	unconst (mPeer) = aSessionMachine->mPeer;
9666	/* share the parent pointer */
9667	unconst (mParent) = mPeer->mParent;
9668
9669	/* take the pointer to Data to share */
9670	mData.share (mPeer->mData);
9671	/*
9672	* take the pointer to UserData to share
9673	* (our UserData must always be the same as Machine's data)
9674	*/
9675	mUserData.share (mPeer->mUserData);
9676	/* make a private copy of all other data (recent changes from SessionMachine) */
9677	mHWData.attachCopy (aSessionMachine->mHWData);
9678	mHDData.attachCopy (aSessionMachine->mHDData);
9679
9680	/* SSData is always unique for SnapshotMachine */
9681	mSSData.allocate();
9682	mSSData->mStateFilePath = aStateFilePath;
9683
9684	/*
9685	* create copies of all shared folders (mHWData after attiching a copy
9686	* contains just references to original objects)
9687	*/
9688	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
9689	it != mHWData->mSharedFolders.end();
9690	++ it)
9691	{
9692	ComObjPtr <SharedFolder> folder;
9693	folder.createObject();
9694	HRESULT rc = folder->initCopy (this, *it);
9695	CheckComRCReturnRC (rc);
9696	*it = folder;
9697	}
9698
9699	/* create all other child objects that will be immutable private copies */
9700
9701	unconst (mBIOSSettings).createObject();
9702	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
9703
9704	#ifdef VBOX_VRDP
9705	unconst (mVRDPServer).createObject();
9706	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
9707	#endif
9708
9709	unconst (mDVDDrive).createObject();
9710	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
9711
9712	unconst (mFloppyDrive).createObject();
9713	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
9714
9715	unconst (mAudioAdapter).createObject();
9716	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
9717
9718	unconst (mUSBController).createObject();
9719	mUSBController->initCopy (this, mPeer->mUSBController);
9720
9721	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
9722	{
9723	unconst (mNetworkAdapters [slot]).createObject();
9724	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
9725	}
9726
9727	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
9728	{
9729	unconst (mSerialPorts [slot]).createObject();
9730	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
9731	}
9732
9733	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
9734	{
9735	unconst (mParallelPorts [slot]).createObject();
9736	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
9737	}
9738
9739	/* Confirm a successful initialization when it's the case */
9740	autoInitSpan.setSucceeded();
9741
9742	LogFlowThisFuncLeave();
9743	return S_OK;
9744	}
9745
9746	/**
9747	* Initializes the SnapshotMachine object when loading from the settings file.
9748	*
9749	* @param aMachine machine the snapshot belngs to
9750	* @param aHWNode <Hardware> node
9751	* @param aHDAsNode <HardDiskAttachments> node
9752	* @param aSnapshotId snapshot ID of this snapshot machine
9753	* @param aStateFilePath file where the execution state is saved
9754	* (or NULL for the offline snapshot)
9755	*
9756	* @note Locks aMachine object for reading.
9757	*/
9758	HRESULT SnapshotMachine::init (Machine *aMachine,
9759	const settings::Key &aHWNode,
9760	const settings::Key &aHDAsNode,
9761	INPTR GUIDPARAM aSnapshotId, INPTR BSTR aStateFilePath)
9762	{
9763	LogFlowThisFuncEnter();
9764	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
9765
9766	AssertReturn (aMachine && !aHWNode.isNull() && !aHDAsNode.isNull() &&
9767	!Guid (aSnapshotId).isEmpty(),
9768	E_INVALIDARG);
9769
9770	/* Enclose the state transition NotReady->InInit->Ready */
9771	AutoInitSpan autoInitSpan (this);
9772	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
9773
9774	mSnapshotId = aSnapshotId;
9775
9776	AutoReaderLock alock (aMachine);
9777
9778	/* memorize the primary Machine instance */
9779	unconst (mPeer) = aMachine;
9780	/* share the parent pointer */
9781	unconst (mParent) = mPeer->mParent;
9782
9783	/* take the pointer to Data to share */
9784	mData.share (mPeer->mData);
9785	/*
9786	* take the pointer to UserData to share
9787	* (our UserData must always be the same as Machine's data)
9788	*/
9789	mUserData.share (mPeer->mUserData);
9790	/* allocate private copies of all other data (will be loaded from settings) */
9791	mHWData.allocate();
9792	mHDData.allocate();
9793
9794	/* SSData is always unique for SnapshotMachine */
9795	mSSData.allocate();
9796	mSSData->mStateFilePath = aStateFilePath;
9797
9798	/* create all other child objects that will be immutable private copies */
9799
9800	unconst (mBIOSSettings).createObject();
9801	mBIOSSettings->init (this);
9802
9803	#ifdef VBOX_VRDP
9804	unconst (mVRDPServer).createObject();
9805	mVRDPServer->init (this);
9806	#endif
9807
9808	unconst (mDVDDrive).createObject();
9809	mDVDDrive->init (this);
9810
9811	unconst (mFloppyDrive).createObject();
9812	mFloppyDrive->init (this);
9813
9814	unconst (mAudioAdapter).createObject();
9815	mAudioAdapter->init (this);
9816
9817	unconst (mUSBController).createObject();
9818	mUSBController->init (this);
9819
9820	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
9821	{
9822	unconst (mNetworkAdapters [slot]).createObject();
9823	mNetworkAdapters [slot]->init (this, slot);
9824	}
9825
9826	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
9827	{
9828	unconst (mSerialPorts [slot]).createObject();
9829	mSerialPorts [slot]->init (this, slot);
9830	}
9831
9832	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
9833	{
9834	unconst (mParallelPorts [slot]).createObject();
9835	mParallelPorts [slot]->init (this, slot);
9836	}
9837
9838	/* load hardware and harddisk settings */
9839
9840	HRESULT rc = loadHardware (aHWNode);
9841	if (SUCCEEDED (rc))
9842	rc = loadHardDisks (aHDAsNode, true /* aRegistered */, &mSnapshotId);
9843
9844	if (SUCCEEDED (rc))
9845	{
9846	/* commit all changes made during the initialization */
9847	commit();
9848	}
9849
9850	/* Confirm a successful initialization when it's the case */
9851	if (SUCCEEDED (rc))
9852	autoInitSpan.setSucceeded();
9853
9854	LogFlowThisFuncLeave();
9855	return rc;
9856	}
9857
9858	/**
9859	* Uninitializes this SnapshotMachine object.
9860	*/
9861	void SnapshotMachine::uninit()
9862	{
9863	LogFlowThisFuncEnter();
9864
9865	/* Enclose the state transition Ready->InUninit->NotReady */
9866	AutoUninitSpan autoUninitSpan (this);
9867	if (autoUninitSpan.uninitDone())
9868	return;
9869
9870	uninitDataAndChildObjects();
9871
9872	/* free the essential data structure last */
9873	mData.free();
9874
9875	unconst (mParent).setNull();
9876	unconst (mPeer).setNull();
9877
9878	LogFlowThisFuncLeave();
9879	}
9880
9881	// AutoLock::Lockable interface
9882	////////////////////////////////////////////////////////////////////////////////
9883
9884	/**
9885	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
9886	* with the primary Machine instance (mPeer).
9887	*/
9888	AutoLock::Handle *SnapshotMachine::lockHandle() const
9889	{
9890	AssertReturn (!mPeer.isNull(), NULL);
9891	return mPeer->lockHandle();
9892	}
9893
9894	// public methods only for internal purposes
9895	////////////////////////////////////////////////////////////////////////////////
9896
9897	/**
9898	* Called by the snapshot object associated with this SnapshotMachine when
9899	* snapshot data such as name or description is changed.
9900	*
9901	* @note Locks this object for writing.
9902	*/
9903	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
9904	{
9905	AutoLock alock (this);
9906
9907	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
9908
9909	/* inform callbacks */
9910	mParent->onSnapshotChange (mData->mUuid, aSnapshot->data().mId);
9911
9912	return S_OK;
9913	}

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 6310

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