MachineImpl.cpp@ 5777

Last change on this file since 5777 was 5777, checked in by vboxsync, 17 years ago
Main: Fixed a dedalock (Machine::AttachHardDisk() calledl VirtualBox with locking which violated the lock order (parents->self->children) and caused a deadlock when VirtualBox tried to lock Machine in clientWatcherThread()).
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 350.7 KB

Line
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* 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 "HostDVDDriveImpl.h"
34	#include "HostFloppyDriveImpl.h"
35	#include "ProgressImpl.h"
36	#include "HardDiskAttachmentImpl.h"
37	#include "USBControllerImpl.h"
38	#include "HostImpl.h"
39	#include "SystemPropertiesImpl.h"
40	#include "SharedFolderImpl.h"
41	#include "GuestOSTypeImpl.h"
42	#include "VirtualBoxErrorInfoImpl.h"
43	#include "GuestImpl.h"
44
45	#include "USBProxyService.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/cfgldr.h>
61	#include <VBox/param.h>
62
63	#include <algorithm>
64
65	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
66	#define HOSTSUFF_EXE ".exe"
67	#else /* !RT_OS_WINDOWS */
68	#define HOSTSUFF_EXE ""
69	#endif /* !RT_OS_WINDOWS */
70
71	// defines / prototypes
72	/////////////////////////////////////////////////////////////////////////////
73
74	// globals
75	/////////////////////////////////////////////////////////////////////////////
76
77	/**
78	* @note The template is NOT completely valid according to VBOX_XML_SCHEMA
79	* (when loading a newly created settings file, validation will be turned off)
80	*/
81	static const char DefaultMachineConfig[] =
82	{
83	"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" RTFILE_LINEFEED
84	"<!-- innotek VirtualBox Machine Configuration -->" RTFILE_LINEFEED
85	"<VirtualBox xmlns=\"" VBOX_XML_NAMESPACE "\" "
86	"version=\"" VBOX_XML_VERSION "-" VBOX_XML_PLATFORM "\">" RTFILE_LINEFEED
87	"</VirtualBox>" RTFILE_LINEFEED
88	};
89
90	/**
91	* Progress callback handler for lengthy operations
92	* (corresponds to the FNRTPROGRESS typedef).
93	*
94	* @param uPercentage Completetion precentage (0-100).
95	* @param pvUser Pointer to the Progress instance.
96	*/
97	static DECLCALLBACK(int) progressCallback (unsigned uPercentage, void *pvUser)
98	{
99	Progress progress = static_cast <Progress > (pvUser);
100
101	/* update the progress object */
102	if (progress)
103	progress->notifyProgress (uPercentage);
104
105	return VINF_SUCCESS;
106	}
107
108	/////////////////////////////////////////////////////////////////////////////
109	// Machine::Data structure
110	/////////////////////////////////////////////////////////////////////////////
111
112	Machine::Data::Data()
113	{
114	mRegistered = FALSE;
115	/* mUuid is initialized in Machine::init() */
116
117	mMachineState = MachineState_PoweredOff;
118	RTTIMESPEC time;
119	mLastStateChange = RTTimeSpecGetMilli (RTTimeNow (&time));
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 = 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	STDMETHODIMP Machine::GetNextExtraDataKey (INPTR BSTR aKey, BSTR aNextKey, BSTR aNextValue)
1933	{
1934	if (!aNextKey)
1935	return E_POINTER;
1936
1937	AutoCaller autoCaller (this);
1938	CheckComRCReturnRC (autoCaller.rc());
1939
1940	AutoReaderLock alock (this);
1941
1942	/* start with nothing found */
1943	*aNextKey = NULL;
1944
1945	/*
1946	* if we're ready and isConfigLocked() is FALSE then it means
1947	* that no config file exists yet, so return shortly
1948	*/
1949	if (!isConfigLocked())
1950	return S_OK;
1951
1952	HRESULT rc = S_OK;
1953
1954	/* load the config file */
1955	CFGHANDLE configLoader = 0;
1956	rc = openConfigLoader (&configLoader);
1957	if (FAILED (rc))
1958	return E_FAIL;
1959
1960	CFGNODE machineNode;
1961	CFGNODE extraDataNode;
1962
1963	/* navigate to the right position */
1964	if (VBOX_SUCCESS(CFGLDRGetNode(configLoader, "VirtualBox/Machine", 0, &machineNode)) &&
1965	VBOX_SUCCESS(CFGLDRGetChildNode(machineNode, "ExtraData", 0, &extraDataNode)))
1966	{
1967	/* check if it exists */
1968	bool found = false;
1969	unsigned count;
1970	CFGNODE extraDataItemNode;
1971	CFGLDRCountChildren(extraDataNode, "ExtraDataItem", &count);
1972	for (unsigned i = 0; (i < count) && (found == false); i++)
1973	{
1974	Bstr name;
1975	CFGLDRGetChildNode(extraDataNode, "ExtraDataItem", i, &extraDataItemNode);
1976	CFGLDRQueryBSTR(extraDataItemNode, "name", name.asOutParam());
1977
1978	/* if we're supposed to return the first one */
1979	if (aKey == NULL)
1980	{
1981	name.cloneTo(aNextKey);
1982	if (aNextValue)
1983	CFGLDRQueryBSTR(extraDataItemNode, "value", aNextValue);
1984	found = true;
1985	}
1986	/* did we find the key we're looking for? */
1987	else if (name == aKey)
1988	{
1989	found = true;
1990	/* is there another item? */
1991	if (i + 1 < count)
1992	{
1993	CFGLDRGetChildNode(extraDataNode, "ExtraDataItem", i + 1, &extraDataItemNode);
1994	CFGLDRQueryBSTR(extraDataItemNode, "name", name.asOutParam());
1995	name.cloneTo(aNextKey);
1996	if (aNextValue)
1997	CFGLDRQueryBSTR(extraDataItemNode, "value", aNextValue);
1998	found = true;
1999	}
2000	else
2001	{
2002	/* it's the last one */
2003	*aNextKey = NULL;
2004	}
2005	}
2006	CFGLDRReleaseNode(extraDataItemNode);
2007	}
2008
2009	/* if we haven't found the key, it's an error */
2010	if (!found)
2011	rc = setError(E_FAIL, tr("Could not find extra data key"));
2012
2013	CFGLDRReleaseNode(extraDataNode);
2014	CFGLDRReleaseNode(machineNode);
2015	}
2016
2017	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
2018
2019	return rc;
2020	}
2021
2022	STDMETHODIMP Machine::GetExtraData (INPTR BSTR aKey, BSTR *aValue)
2023	{
2024	if (!aKey)
2025	return E_INVALIDARG;
2026	if (!aValue)
2027	return E_POINTER;
2028
2029	AutoCaller autoCaller (this);
2030	CheckComRCReturnRC (autoCaller.rc());
2031
2032	AutoReaderLock alock (this);
2033
2034	/* start with nothing found */
2035	*aValue = NULL;
2036
2037	/*
2038	* if we're ready and isConfigLocked() is FALSE then it means
2039	* that no config file exists yet, so return shortly
2040	*/
2041	if (!isConfigLocked())
2042	return S_OK;
2043
2044	HRESULT rc = S_OK;
2045
2046	/* load the config file */
2047	CFGHANDLE configLoader = 0;
2048	rc = openConfigLoader (&configLoader);
2049	if (FAILED (rc))
2050	return E_FAIL;
2051
2052	CFGNODE machineNode;
2053	CFGNODE extraDataNode;
2054
2055	/* navigate to the right position */
2056	if (VBOX_SUCCESS(CFGLDRGetNode(configLoader, "VirtualBox/Machine", 0, &machineNode)) &&
2057	VBOX_SUCCESS(CFGLDRGetChildNode(machineNode, "ExtraData", 0, &extraDataNode)))
2058	{
2059	/* check if it exists */
2060	bool found = false;
2061	unsigned count;
2062	CFGNODE extraDataItemNode;
2063	CFGLDRCountChildren(extraDataNode, "ExtraDataItem", &count);
2064	for (unsigned i = 0; (i < count) && (found == false); i++)
2065	{
2066	Bstr name;
2067	CFGLDRGetChildNode(extraDataNode, "ExtraDataItem", i, &extraDataItemNode);
2068	CFGLDRQueryBSTR(extraDataItemNode, "name", name.asOutParam());
2069	if (name == aKey)
2070	{
2071	found = true;
2072	CFGLDRQueryBSTR(extraDataItemNode, "value", aValue);
2073	}
2074	CFGLDRReleaseNode(extraDataItemNode);
2075	}
2076
2077	CFGLDRReleaseNode(extraDataNode);
2078	CFGLDRReleaseNode(machineNode);
2079	}
2080
2081	rc = closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
2082
2083	return rc;
2084	}
2085
2086	/**
2087	* @note Locks mParent for reading + this object for writing.
2088	*/
2089	STDMETHODIMP Machine::SetExtraData (INPTR BSTR aKey, INPTR BSTR aValue)
2090	{
2091	if (!aKey)
2092	return E_INVALIDARG;
2093
2094	AutoCaller autoCaller (this);
2095	CheckComRCReturnRC (autoCaller.rc());
2096
2097	/* VirtualBox::onExtraDataCanChange() needs mParent lock */
2098	AutoMultiLock <2> alock (mParent->rlock(), this->wlock());
2099
2100	if (mType == IsSnapshotMachine)
2101	{
2102	HRESULT rc = checkStateDependency (MutableStateDep);
2103	CheckComRCReturnRC (rc);
2104	}
2105
2106	bool changed = false;
2107	HRESULT rc = S_OK;
2108
2109	/*
2110	* if we're ready and isConfigLocked() is FALSE then it means
2111	* that no config file exists yet, so call saveSettings() to create one
2112	*/
2113	if (!isConfigLocked())
2114	{
2115	rc = saveSettings (false /* aMarkCurStateAsModified */);
2116	if (FAILED (rc))
2117	return rc;
2118	}
2119
2120	/* load the config file */
2121	CFGHANDLE configLoader = 0;
2122	rc = openConfigLoader (&configLoader);
2123	if (FAILED (rc))
2124	return rc;
2125
2126	CFGNODE machineNode = 0;
2127	CFGNODE extraDataNode = 0;
2128
2129	int vrc = CFGLDRGetNode (configLoader, "VirtualBox/Machine", 0, &machineNode);
2130	if (VBOX_FAILURE (vrc))
2131	vrc = CFGLDRCreateNode (configLoader, "VirtualBox/Machine", &machineNode);
2132
2133	vrc = CFGLDRGetChildNode (machineNode, "ExtraData", 0, &extraDataNode);
2134	if (VBOX_FAILURE (vrc) && aValue)
2135	vrc = CFGLDRCreateChildNode (machineNode, "ExtraData", &extraDataNode);
2136
2137	if (extraDataNode)
2138	{
2139	CFGNODE extraDataItemNode = 0;
2140	Bstr oldVal;
2141
2142	unsigned count;
2143	CFGLDRCountChildren (extraDataNode, "ExtraDataItem", &count);
2144
2145	for (unsigned i = 0; i < count; i++)
2146	{
2147	CFGLDRGetChildNode (extraDataNode, "ExtraDataItem", i, &extraDataItemNode);
2148	Bstr name;
2149	CFGLDRQueryBSTR (extraDataItemNode, "name", name.asOutParam());
2150	if (name == aKey)
2151	{
2152	CFGLDRQueryBSTR (extraDataItemNode, "value", oldVal.asOutParam());
2153	break;
2154	}
2155	CFGLDRReleaseNode (extraDataItemNode);
2156	extraDataItemNode = 0;
2157	}
2158
2159	/*
2160	* When no key is found, oldVal is null
2161	* Note:
2162	* 1. when oldVal is null, \|oldVal == (BSTR) NULL\| is true
2163	* 2. we cannot do \|oldVal != aValue\| because it will compare
2164	* BSTR pointers instead of strings (due to type conversion ops)
2165	*/
2166	changed = !(oldVal == aValue);
2167
2168	if (changed)
2169	{
2170	/* ask for permission from all listeners */
2171	Bstr error;
2172	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, aValue, error))
2173	{
2174	const char *sep = error.isEmpty() ? "" : ": ";
2175	const BSTR err = error.isNull() ? (const BSTR) L"" : error.raw();
2176	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2177	sep, err));
2178	rc = setError (E_ACCESSDENIED,
2179	tr ("Could not set extra data because someone refused "
2180	"the requested change of '%ls' to '%ls'%s%ls"),
2181	aKey, aValue, sep, err);
2182	}
2183	else
2184	{
2185	if (aValue)
2186	{
2187	if (!extraDataItemNode)
2188	{
2189	/* create a new item */
2190	CFGLDRAppendChildNode (extraDataNode, "ExtraDataItem",
2191	&extraDataItemNode);
2192	CFGLDRSetBSTR (extraDataItemNode, "name", aKey);
2193	}
2194	CFGLDRSetBSTR (extraDataItemNode, "value", aValue);
2195	}
2196	else
2197	{
2198	/* an old value does for sure exist here */
2199	CFGLDRDeleteNode (extraDataItemNode);
2200	extraDataItemNode = 0;
2201	}
2202	}
2203	}
2204
2205	if (extraDataItemNode)
2206	CFGLDRReleaseNode (extraDataItemNode);
2207
2208	CFGLDRReleaseNode (extraDataNode);
2209	}
2210
2211	CFGLDRReleaseNode (machineNode);
2212
2213	if (SUCCEEDED (rc) && changed)
2214	rc = closeConfigLoader (configLoader, true /* aSaveBeforeClose */);
2215	else
2216	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
2217
2218	/* fire an event */
2219	if (SUCCEEDED (rc) && changed)
2220	{
2221	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2222	}
2223
2224	return rc;
2225	}
2226
2227	STDMETHODIMP Machine::SaveSettings()
2228	{
2229	AutoCaller autoCaller (this);
2230	CheckComRCReturnRC (autoCaller.rc());
2231
2232	/* Under some circumstancies, saveSettings() needs mParent lock */
2233	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
2234
2235	HRESULT rc = checkStateDependency (MutableStateDep);
2236	CheckComRCReturnRC (rc);
2237
2238	/* the settings file path may never be null */
2239	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2240
2241	/* save all VM data excluding snapshots */
2242	return saveSettings();
2243	}
2244
2245	STDMETHODIMP Machine::DiscardSettings()
2246	{
2247	AutoCaller autoCaller (this);
2248	CheckComRCReturnRC (autoCaller.rc());
2249
2250	AutoLock alock (this);
2251
2252	HRESULT rc = checkStateDependency (MutableStateDep);
2253	CheckComRCReturnRC (rc);
2254
2255	/*
2256	* during this rollback, the session will be notified if data has
2257	* been actually changed
2258	*/
2259	rollback (true /* aNotify */);
2260
2261	return S_OK;
2262	}
2263
2264	STDMETHODIMP Machine::DeleteSettings()
2265	{
2266	AutoCaller autoCaller (this);
2267	CheckComRCReturnRC (autoCaller.rc());
2268
2269	AutoLock alock (this);
2270
2271	HRESULT rc = checkStateDependency (MutableStateDep);
2272	CheckComRCReturnRC (rc);
2273
2274	if (mData->mRegistered)
2275	return setError (E_FAIL,
2276	tr ("Cannot delete settings of a registered machine"));
2277
2278	/* delete the settings only when the file actually exists */
2279	if (isConfigLocked())
2280	{
2281	unlockConfig();
2282	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2283	if (VBOX_FAILURE (vrc))
2284	return setError (E_FAIL,
2285	tr ("Could not delete the settings file '%ls' (%Vrc)"),
2286	mData->mConfigFileFull.raw(), vrc);
2287
2288	/* delete the Logs folder, nothing important should be left
2289	* there (we don't check for errors because the user might have
2290	* some private files there that we don't want to delete) */
2291	Utf8Str logFolder;
2292	getLogFolder (logFolder);
2293	Assert (!logFolder.isEmpty());
2294	if (RTDirExists (logFolder))
2295	{
2296	/* Delete all VBox.log[.N] files from the Logs folder
2297	* (this must be in sync with the rotation logic in
2298	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2299	* files that may have been created by the GUI. */
2300	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2301	RTFileDelete (log);
2302	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2303	RTFileDelete (log);
2304	for (int i = 3; i >= 0; i--)
2305	{
2306	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2307	RTFileDelete (log);
2308	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2309	RTFileDelete (log);
2310	}
2311
2312	RTDirRemove (logFolder);
2313	}
2314
2315	/* delete the Snapshots folder, nothing important should be left
2316	* there (we don't check for errors because the user might have
2317	* some private files there that we don't want to delete) */
2318	Utf8Str snapshotFolder = mUserData->mSnapshotFolderFull;
2319	Assert (!snapshotFolder.isEmpty());
2320	if (RTDirExists (snapshotFolder))
2321	RTDirRemove (snapshotFolder);
2322
2323	/* delete the directory that contains the settings file, but only
2324	* if it matches the VM name (i.e. a structure created by default in
2325	* openConfigLoader()) */
2326	{
2327	Utf8Str settingsDir;
2328	if (isInOwnDir (&settingsDir))
2329	RTDirRemove (settingsDir);
2330	}
2331	}
2332
2333	return S_OK;
2334	}
2335
2336	STDMETHODIMP Machine::GetSnapshot (INPTR GUIDPARAM aId, ISnapshot **aSnapshot)
2337	{
2338	if (!aSnapshot)
2339	return E_POINTER;
2340
2341	AutoCaller autoCaller (this);
2342	CheckComRCReturnRC (autoCaller.rc());
2343
2344	AutoReaderLock alock (this);
2345
2346	Guid id = aId;
2347	ComObjPtr <Snapshot> snapshot;
2348
2349	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2350	snapshot.queryInterfaceTo (aSnapshot);
2351
2352	return rc;
2353	}
2354
2355	STDMETHODIMP Machine::FindSnapshot (INPTR BSTR aName, ISnapshot **aSnapshot)
2356	{
2357	if (!aName)
2358	return E_INVALIDARG;
2359	if (!aSnapshot)
2360	return E_POINTER;
2361
2362	AutoCaller autoCaller (this);
2363	CheckComRCReturnRC (autoCaller.rc());
2364
2365	AutoReaderLock alock (this);
2366
2367	ComObjPtr <Snapshot> snapshot;
2368
2369	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2370	snapshot.queryInterfaceTo (aSnapshot);
2371
2372	return rc;
2373	}
2374
2375	STDMETHODIMP Machine::SetCurrentSnapshot (INPTR GUIDPARAM aId)
2376	{
2377	/// @todo (dmik) don't forget to set
2378	// mData->mCurrentStateModified to FALSE
2379
2380	return setError (E_NOTIMPL, "Not implemented");
2381	}
2382
2383	STDMETHODIMP
2384	Machine::CreateSharedFolder (INPTR BSTR aName, INPTR BSTR aHostPath)
2385	{
2386	if (!aName \|\| !aHostPath)
2387	return E_INVALIDARG;
2388
2389	AutoCaller autoCaller (this);
2390	CheckComRCReturnRC (autoCaller.rc());
2391
2392	AutoLock alock (this);
2393
2394	HRESULT rc = checkStateDependency (MutableStateDep);
2395	CheckComRCReturnRC (rc);
2396
2397	ComObjPtr <SharedFolder> sharedFolder;
2398	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2399	if (SUCCEEDED (rc))
2400	return setError (E_FAIL,
2401	tr ("Shared folder named '%ls' already exists"), aName);
2402
2403	sharedFolder.createObject();
2404	rc = sharedFolder->init (machine(), aName, aHostPath);
2405	CheckComRCReturnRC (rc);
2406
2407	BOOL accessible = FALSE;
2408	rc = sharedFolder->COMGETTER(Accessible) (&accessible);
2409	CheckComRCReturnRC (rc);
2410
2411	if (!accessible)
2412	return setError (E_FAIL,
2413	tr ("Shared folder host path '%ls' is not accessible"), aHostPath);
2414
2415	mHWData.backup();
2416	mHWData->mSharedFolders.push_back (sharedFolder);
2417
2418	/* inform the direct session if any */
2419	alock.leave();
2420	onSharedFolderChange();
2421
2422	return S_OK;
2423	}
2424
2425	STDMETHODIMP Machine::RemoveSharedFolder (INPTR BSTR aName)
2426	{
2427	if (!aName)
2428	return E_INVALIDARG;
2429
2430	AutoCaller autoCaller (this);
2431	CheckComRCReturnRC (autoCaller.rc());
2432
2433	AutoReaderLock alock (this);
2434
2435	HRESULT rc = checkStateDependency (MutableStateDep);
2436	CheckComRCReturnRC (rc);
2437
2438	ComObjPtr <SharedFolder> sharedFolder;
2439	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2440	CheckComRCReturnRC (rc);
2441
2442	mHWData.backup();
2443	mHWData->mSharedFolders.remove (sharedFolder);
2444
2445	/* inform the direct session if any */
2446	alock.leave();
2447	onSharedFolderChange();
2448
2449	return S_OK;
2450	}
2451
2452	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2453	{
2454	if (!aCanShow)
2455	return E_POINTER;
2456
2457	/* start with No */
2458	*aCanShow = FALSE;
2459
2460	AutoCaller autoCaller (this);
2461	AssertComRCReturnRC (autoCaller.rc());
2462
2463	ComPtr <IInternalSessionControl> directControl;
2464	{
2465	AutoReaderLock alock (this);
2466
2467	if (mData->mSession.mState != SessionState_SessionOpen)
2468	return setError (E_FAIL,
2469	tr ("Machine session is not open (session state: %d)"),
2470	mData->mSession.mState);
2471
2472	directControl = mData->mSession.mDirectControl;
2473	}
2474
2475	/* ignore calls made after #OnSessionEnd() is called */
2476	if (!directControl)
2477	return S_OK;
2478
2479	ULONG64 dummy;
2480	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2481	}
2482
2483	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2484	{
2485	if (!aWinId)
2486	return E_POINTER;
2487
2488	AutoCaller autoCaller (this);
2489	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2490
2491	ComPtr <IInternalSessionControl> directControl;
2492	{
2493	AutoReaderLock alock (this);
2494
2495	if (mData->mSession.mState != SessionState_SessionOpen)
2496	return setError (E_FAIL,
2497	tr ("Machine session is not open (session state: %d)"),
2498	mData->mSession.mState);
2499
2500	directControl = mData->mSession.mDirectControl;
2501	}
2502
2503	/* ignore calls made after #OnSessionEnd() is called */
2504	if (!directControl)
2505	return S_OK;
2506
2507	BOOL dummy;
2508	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2509	}
2510
2511	// public methods for internal purposes
2512	/////////////////////////////////////////////////////////////////////////////
2513
2514	/**
2515	* Returns the session machine object associated with the this machine.
2516	* The returned session machine is null if no direct session is currently open.
2517	*
2518	* @note locks this object for reading.
2519	*/
2520	ComObjPtr <SessionMachine> Machine::sessionMachine()
2521	{
2522	ComObjPtr <SessionMachine> sm;
2523
2524	AutoLimitedCaller autoCaller (this);
2525	AssertComRCReturn (autoCaller.rc(), sm);
2526
2527	/* return null for inaccessible machines */
2528	if (autoCaller.state() != Ready)
2529	return sm;
2530
2531	AutoReaderLock alock (this);
2532
2533	sm = mData->mSession.mMachine;
2534	Assert (!sm.isNull() \|\|
2535	mData->mSession.mState != SessionState_SessionOpen);
2536
2537	return sm;
2538	}
2539
2540	/**
2541	* Saves the registry entry of this machine to the given configuration node.
2542	*
2543	* @param aEntryNode Node to save the registry entry to.
2544	*
2545	* @note locks this object for reading.
2546	*/
2547	HRESULT Machine::saveRegistryEntry (CFGNODE aEntryNode)
2548	{
2549	AssertReturn (aEntryNode, E_FAIL);
2550
2551	AutoLimitedCaller autoCaller (this);
2552	AssertComRCReturnRC (autoCaller.rc());
2553
2554	AutoReaderLock alock (this);
2555
2556	/* UUID */
2557	CFGLDRSetUUID (aEntryNode, "uuid", mData->mUuid.raw());
2558	/* settings file name (possibly, relative) */
2559	CFGLDRSetBSTR (aEntryNode, "src", mData->mConfigFile);
2560
2561	return S_OK;
2562	}
2563
2564	/**
2565	* Calculates the absolute path of the given path taking the directory of
2566	* the machine settings file as the current directory.
2567	*
2568	* @param aPath path to calculate the absolute path for
2569	* @param aResult where to put the result (used only on success,
2570	* so can be the same Utf8Str instance as passed as \a aPath)
2571	* @return VirtualBox result
2572	*
2573	* @note Locks this object for reading.
2574	*/
2575	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
2576	{
2577	AutoCaller autoCaller (this);
2578	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2579
2580	AutoReaderLock alock (this);
2581
2582	AssertReturn (!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
2583
2584	Utf8Str settingsDir = mData->mConfigFileFull;
2585
2586	RTPathStripFilename (settingsDir.mutableRaw());
2587	char folder [RTPATH_MAX];
2588	int vrc = RTPathAbsEx (settingsDir, aPath,
2589	folder, sizeof (folder));
2590	if (VBOX_SUCCESS (vrc))
2591	aResult = folder;
2592
2593	return vrc;
2594	}
2595
2596	/**
2597	* Tries to calculate the relative path of the given absolute path using the
2598	* directory of the machine settings file as the base directory.
2599	*
2600	* @param aPath absolute path to calculate the relative path for
2601	* @param aResult where to put the result (used only when it's possible to
2602	* make a relative path from the given absolute path;
2603	* otherwise left untouched)
2604	*
2605	* @note Locks this object for reading.
2606	*/
2607	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
2608	{
2609	AutoCaller autoCaller (this);
2610	AssertComRCReturn (autoCaller.rc(), (void) 0);
2611
2612	AutoReaderLock alock (this);
2613
2614	AssertReturnVoid (!mData->mConfigFileFull.isNull());
2615
2616	Utf8Str settingsDir = mData->mConfigFileFull;
2617
2618	RTPathStripFilename (settingsDir.mutableRaw());
2619	if (RTPathStartsWith (aPath, settingsDir))
2620	{
2621	/* when assigning, we create a separate Utf8Str instance because both
2622	* aPath and aResult can point to the same memory location when this
2623	* func is called (if we just do aResult = aPath, aResult will be freed
2624	* first, and since its the same as aPath, an attempt to copy garbage
2625	* will be made. */
2626	aResult = Utf8Str (aPath + settingsDir.length() + 1);
2627	}
2628	}
2629
2630	/**
2631	* Returns the full path to the machine's log folder in the
2632	* \a aLogFolder argument.
2633	*/
2634	void Machine::getLogFolder (Utf8Str &aLogFolder)
2635	{
2636	AutoCaller autoCaller (this);
2637	AssertComRCReturnVoid (autoCaller.rc());
2638
2639	AutoReaderLock alock (this);
2640
2641	Utf8Str settingsDir;
2642	if (isInOwnDir (&settingsDir))
2643	{
2644	/* Log folder is <Machines>/<VM_Name>/Logs */
2645	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
2646	}
2647	else
2648	{
2649	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
2650	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
2651	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
2652	RTPATH_DELIMITER);
2653	}
2654	}
2655
2656	/**
2657	* Returns @c true if the given DVD image is attached to this machine either
2658	* in the current state or in any of the snapshots.
2659	*
2660	* @param aId Image ID to check.
2661	* @param aUsage Type of the check.
2662	*
2663	* @note Locks this object + DVD object for reading.
2664	*/
2665	bool Machine::isDVDImageUsed (const Guid &aId, ResourceUsage_T aUsage)
2666	{
2667	AutoLimitedCaller autoCaller (this);
2668	AssertComRCReturn (autoCaller.rc(), false);
2669
2670	/* answer 'not attached' if the VM is limited */
2671	if (autoCaller.state() == Limited)
2672	return false;
2673
2674	AutoReaderLock alock (this);
2675
2676	Machine *m = this;
2677
2678	/* take the session machine when appropriate */
2679	if (!mData->mSession.mMachine.isNull())
2680	m = mData->mSession.mMachine;
2681
2682	/* first, check the current state */
2683	{
2684	const ComObjPtr <DVDDrive> &dvd = m->mDVDDrive;
2685	AssertReturn (!dvd.isNull(), false);
2686
2687	AutoReaderLock dvdLock (dvd);
2688
2689	/* loop over the backed up (permanent) and current (temporary) DVD data */
2690	DVDDrive::Data *d [2];
2691	if (dvd->data().isBackedUp())
2692	{
2693	d [0] = dvd->data().backedUpData();
2694	d [1] = dvd->data().data();
2695	}
2696	else
2697	{
2698	d [0] = dvd->data().data();
2699	d [1] = NULL;
2700	}
2701
2702	if (!(aUsage & ResourceUsage_PermanentUsage))
2703	d [0] = NULL;
2704	if (!(aUsage & ResourceUsage_TemporaryUsage))
2705	d [1] = NULL;
2706
2707	for (unsigned i = 0; i < ELEMENTS (d); ++ i)
2708	{
2709	if (d [i] &&
2710	d [i]->mDriveState == DriveState_ImageMounted)
2711	{
2712	Guid id;
2713	HRESULT rc = d [i]->mDVDImage->COMGETTER(Id) (id.asOutParam());
2714	AssertComRC (rc);
2715	if (id == aId)
2716	return true;
2717	}
2718	}
2719	}
2720
2721	/* then, check snapshots if any */
2722	if (aUsage & ResourceUsage_PermanentUsage)
2723	{
2724	if (!mData->mFirstSnapshot.isNull() &&
2725	mData->mFirstSnapshot->isDVDImageUsed (aId))
2726	return true;
2727	}
2728
2729	return false;
2730	}
2731
2732	/**
2733	* Returns @c true if the given Floppy image is attached to this machine either
2734	* in the current state or in any of the snapshots.
2735	*
2736	* @param aId Image ID to check.
2737	* @param aUsage Type of the check.
2738	*
2739	* @note Locks this object + Floppy object for reading.
2740	*/
2741	bool Machine::isFloppyImageUsed (const Guid &aId, ResourceUsage_T aUsage)
2742	{
2743	AutoCaller autoCaller (this);
2744	AssertComRCReturn (autoCaller.rc(), false);
2745
2746	/* answer 'not attached' if the VM is limited */
2747	if (autoCaller.state() == Limited)
2748	return false;
2749
2750	AutoReaderLock alock (this);
2751
2752	Machine *m = this;
2753
2754	/* take the session machine when appropriate */
2755	if (!mData->mSession.mMachine.isNull())
2756	m = mData->mSession.mMachine;
2757
2758	/* first, check the current state */
2759	{
2760	const ComObjPtr <FloppyDrive> &floppy = m->mFloppyDrive;
2761	AssertReturn (!floppy.isNull(), false);
2762
2763	AutoReaderLock floppyLock (floppy);
2764
2765	/* loop over the backed up (permanent) and current (temporary) Floppy data */
2766	FloppyDrive::Data *d [2];
2767	if (floppy->data().isBackedUp())
2768	{
2769	d [0] = floppy->data().backedUpData();
2770	d [1] = floppy->data().data();
2771	}
2772	else
2773	{
2774	d [0] = floppy->data().data();
2775	d [1] = NULL;
2776	}
2777
2778	if (!(aUsage & ResourceUsage_PermanentUsage))
2779	d [0] = NULL;
2780	if (!(aUsage & ResourceUsage_TemporaryUsage))
2781	d [1] = NULL;
2782
2783	for (unsigned i = 0; i < ELEMENTS (d); ++ i)
2784	{
2785	if (d [i] &&
2786	d [i]->mDriveState == DriveState_ImageMounted)
2787	{
2788	Guid id;
2789	HRESULT rc = d [i]->mFloppyImage->COMGETTER(Id) (id.asOutParam());
2790	AssertComRC (rc);
2791	if (id == aId)
2792	return true;
2793	}
2794	}
2795	}
2796
2797	/* then, check snapshots if any */
2798	if (aUsage & ResourceUsage_PermanentUsage)
2799	{
2800	if (!mData->mFirstSnapshot.isNull() &&
2801	mData->mFirstSnapshot->isFloppyImageUsed (aId))
2802	return true;
2803	}
2804
2805	return false;
2806	}
2807
2808	/**
2809	* @note Locks mParent and this object for writing,
2810	* calls the client process (outside the lock).
2811	*/
2812	HRESULT Machine::openSession (IInternalSessionControl *aControl)
2813	{
2814	LogFlowThisFuncEnter();
2815
2816	AssertReturn (aControl, E_FAIL);
2817
2818	AutoCaller autoCaller (this);
2819	CheckComRCReturnRC (autoCaller.rc());
2820
2821	/* We need VirtualBox lock because of Progress::notifyComplete() */
2822	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
2823
2824	if (!mData->mRegistered)
2825	return setError (E_UNEXPECTED,
2826	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
2827
2828	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
2829
2830	if (mData->mSession.mState == SessionState_SessionOpen \|\|
2831	mData->mSession.mState == SessionState_SessionClosing)
2832	return setError (E_ACCESSDENIED,
2833	tr ("A session for the machine '%ls' is currently open "
2834	"(or being closed)"),
2835	mUserData->mName.raw());
2836
2837	/* may not be Running */
2838	AssertReturn (mData->mMachineState < MachineState_Running, E_FAIL);
2839
2840	/* get the sesion PID */
2841	RTPROCESS pid = NIL_RTPROCESS;
2842	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
2843	aControl->GetPID ((ULONG *) &pid);
2844	Assert (pid != NIL_RTPROCESS);
2845
2846	if (mData->mSession.mState == SessionState_SessionSpawning)
2847	{
2848	/* This machine is awaiting for a spawning session to be opened, so
2849	* reject any other open attempts from processes other than one
2850	* started by #openRemoteSession(). */
2851
2852	LogFlowThisFunc (("mSession.mPid=%d(0x%x)\n",
2853	mData->mSession.mPid, mData->mSession.mPid));
2854	LogFlowThisFunc (("session.pid=%d(0x%x)\n", pid, pid));
2855
2856	if (mData->mSession.mPid != pid)
2857	return setError (E_ACCESSDENIED,
2858	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
2859	"session with the machine named '%ls', while only a process "
2860	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
2861	pid, mUserData->mName.raw(), mData->mSession.mPid);
2862	}
2863
2864	/* create a SessionMachine object */
2865	ComObjPtr <SessionMachine> sessionMachine;
2866	sessionMachine.createObject();
2867	HRESULT rc = sessionMachine->init (this);
2868	AssertComRC (rc);
2869
2870	if (SUCCEEDED (rc))
2871	{
2872	/*
2873	* Set the session state to Spawning to protect against subsequent
2874	* attempts to open a session and to unregister the machine after
2875	* we leave the lock.
2876	*/
2877	SessionState_T origState = mData->mSession.mState;
2878	mData->mSession.mState = SessionState_SessionSpawning;
2879
2880	/*
2881	* Leave the lock before calling the client process -- it will call
2882	* Machine/SessionMachine methods. Leaving the lock here is quite safe
2883	* because the state is Spawning, so that openRemotesession() and
2884	* openExistingSession() calls will fail. This method, called before we
2885	* enter the lock again, will fail because of the wrong PID.
2886	*
2887	* Note that mData->mSession.mRemoteControls accessed outside
2888	* the lock may not be modified when state is Spawning, so it's safe.
2889	*/
2890	alock.leave();
2891
2892	LogFlowThisFunc (("Calling AssignMachine()...\n"));
2893	rc = aControl->AssignMachine (sessionMachine);
2894	LogFlowThisFunc (("AssignMachine() returned %08X\n", rc));
2895
2896	/* The failure may w/o any error info (from RPC), so provide one */
2897	if (FAILED (rc))
2898	setError (rc,
2899	tr ("Failed to assign the machine to the session"));
2900
2901	if (SUCCEEDED (rc) && origState == SessionState_SessionSpawning)
2902	{
2903	/* complete the remote session initialization */
2904
2905	/* get the console from the direct session */
2906	ComPtr <IConsole> console;
2907	rc = aControl->GetRemoteConsole (console.asOutParam());
2908	ComAssertComRC (rc);
2909
2910	if (SUCCEEDED (rc) && !console)
2911	{
2912	ComAssert (!!console);
2913	rc = E_FAIL;
2914	}
2915
2916	/* assign machine & console to the remote sesion */
2917	if (SUCCEEDED (rc))
2918	{
2919	/*
2920	* after openRemoteSession(), the first and the only
2921	* entry in remoteControls is that remote session
2922	*/
2923	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
2924	rc = mData->mSession.mRemoteControls.front()->
2925	AssignRemoteMachine (sessionMachine, console);
2926	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
2927
2928	/* The failure may w/o any error info (from RPC), so provide one */
2929	if (FAILED (rc))
2930	setError (rc,
2931	tr ("Failed to assign the machine to the remote session"));
2932	}
2933
2934	if (FAILED (rc))
2935	aControl->Uninitialize();
2936	}
2937
2938	/* enter the lock again */
2939	alock.enter();
2940
2941	/* Restore the session state */
2942	mData->mSession.mState = origState;
2943	}
2944
2945	/* finalize spawning amyway (this is why we don't return on errors above) */
2946	if (mData->mSession.mState == SessionState_SessionSpawning)
2947	{
2948	/* Note that the progress object is finalized later */
2949
2950	/* We don't reset mSession.mPid and mType here because both are
2951	* necessary for SessionMachine::uninit() to reap the child process
2952	* later. */
2953
2954	if (FAILED (rc))
2955	{
2956	/* Remove the remote control from the list on failure
2957	* and reset session state to Closed. */
2958	mData->mSession.mRemoteControls.clear();
2959	mData->mSession.mState = SessionState_SessionClosed;
2960	}
2961	}
2962	else
2963	{
2964	/* memorize PID of the directly opened session */
2965	if (SUCCEEDED (rc))
2966	mData->mSession.mPid = pid;
2967	}
2968
2969	if (SUCCEEDED (rc))
2970	{
2971	/* memorize the direct session control */
2972	mData->mSession.mDirectControl = aControl;
2973	mData->mSession.mState = SessionState_SessionOpen;
2974	/* associate the SessionMachine with this Machine */
2975	mData->mSession.mMachine = sessionMachine;
2976	}
2977
2978	if (mData->mSession.mProgress)
2979	{
2980	/* finalize the progress after setting the state, for consistency */
2981	mData->mSession.mProgress->notifyComplete (rc);
2982	mData->mSession.mProgress.setNull();
2983	}
2984
2985	/* uninitialize the created session machine on failure */
2986	if (FAILED (rc))
2987	sessionMachine->uninit();
2988
2989	LogFlowThisFunc (("rc=%08X\n", rc));
2990	LogFlowThisFuncLeave();
2991	return rc;
2992	}
2993
2994	/**
2995	* @note Locks this object for writing, calls the client process
2996	* (inside the lock).
2997	*/
2998	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
2999	INPTR BSTR aType, INPTR BSTR aEnvironment,
3000	Progress *aProgress)
3001	{
3002	LogFlowThisFuncEnter();
3003
3004	AssertReturn (aControl, E_FAIL);
3005	AssertReturn (aProgress, E_FAIL);
3006
3007	AutoCaller autoCaller (this);
3008	CheckComRCReturnRC (autoCaller.rc());
3009
3010	AutoLock alock (this);
3011
3012	if (!mData->mRegistered)
3013	return setError (E_UNEXPECTED,
3014	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3015
3016	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3017
3018	if (mData->mSession.mState == SessionState_SessionOpen \|\|
3019	mData->mSession.mState == SessionState_SessionSpawning \|\|
3020	mData->mSession.mState == SessionState_SessionClosing)
3021	return setError (E_ACCESSDENIED,
3022	tr ("A session for the machine '%ls' is currently open "
3023	"(or being opened or closed)"),
3024	mUserData->mName.raw());
3025
3026	/* may not be Running */
3027	AssertReturn (mData->mMachineState < MachineState_Running, E_FAIL);
3028
3029	/* get the path to the executable */
3030	char path [RTPATH_MAX];
3031	RTPathAppPrivateArch (path, RTPATH_MAX);
3032	size_t sz = strlen (path);
3033	path [sz++] = RTPATH_DELIMITER;
3034	path [sz] = 0;
3035	char *cmd = path + sz;
3036	sz = RTPATH_MAX - sz;
3037
3038	int vrc = VINF_SUCCESS;
3039	RTPROCESS pid = NIL_RTPROCESS;
3040
3041	RTENV env = RTENV_DEFAULT;
3042
3043	if (aEnvironment)
3044	{
3045	char *newEnvStr = NULL;
3046
3047	do
3048	{
3049	/* clone the current environment */
3050	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3051	AssertRCBreak (vrc2, vrc = vrc2);
3052
3053	newEnvStr = RTStrDup(Utf8Str (aEnvironment));
3054	AssertPtrBreak (newEnvStr, vrc = vrc2);
3055
3056	/* put new variables to the environment
3057	* (ignore empty variable names here since RTEnv API
3058	* intentionally doesn't do that) */
3059	char *var = newEnvStr;
3060	for (char p = newEnvStr; p; ++ p)
3061	{
3062	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3063	{
3064	*p = '\0';
3065	if (*var)
3066	{
3067	char *val = strchr (var, '=');
3068	if (val)
3069	{
3070	*val++ = '\0';
3071	vrc2 = RTEnvSetEx (env, var, val);
3072	}
3073	else
3074	vrc2 = RTEnvUnsetEx (env, var);
3075	if (VBOX_FAILURE (vrc2))
3076	break;
3077	}
3078	var = p + 1;
3079	}
3080	}
3081	if (VBOX_SUCCESS (vrc2) && *var)
3082	vrc2 = RTEnvPutEx (env, var);
3083
3084	AssertRCBreak (vrc2, vrc = vrc2);
3085	}
3086	while (0);
3087
3088	if (newEnvStr != NULL)
3089	RTStrFree(newEnvStr);
3090	}
3091
3092	Bstr type (aType);
3093	if (type == "gui")
3094	{
3095	#ifdef RT_OS_DARWIN /* Avoid Lanuch Services confusing this with the selector by using a helper app. */
3096	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3097	#else
3098	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3099	#endif
3100	Assert (sz >= sizeof (VirtualBox_exe));
3101	strcpy (cmd, VirtualBox_exe);
3102
3103	Utf8Str idStr = mData->mUuid.toString();
3104	#ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3105	const char * args[] = {path, "-startvm", idStr, 0 };
3106	#else
3107	Utf8Str name = mUserData->mName;
3108	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3109	#endif
3110	vrc = RTProcCreate (path, args, env, 0, &pid);
3111	}
3112	else
3113	#ifdef VBOX_VRDP
3114	if (type == "vrdp")
3115	{
3116	const char VBoxVRDP_exe[] = "VBoxVRDP" HOSTSUFF_EXE;
3117	Assert (sz >= sizeof (VBoxVRDP_exe));
3118	strcpy (cmd, VBoxVRDP_exe);
3119
3120	Utf8Str idStr = mData->mUuid.toString();
3121	#ifdef RT_OS_WINDOWS
3122	const char * args[] = {path, "-startvm", idStr, 0 };
3123	#else
3124	Utf8Str name = mUserData->mName;
3125	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3126	#endif
3127	vrc = RTProcCreate (path, args, env, 0, &pid);
3128	}
3129	else
3130	#endif /* VBOX_VRDP */
3131	if (type == "capture")
3132	{
3133	const char VBoxVRDP_exe[] = "VBoxVRDP" HOSTSUFF_EXE;
3134	Assert (sz >= sizeof (VBoxVRDP_exe));
3135	strcpy (cmd, VBoxVRDP_exe);
3136
3137	Utf8Str idStr = mData->mUuid.toString();
3138	#ifdef RT_OS_WINDOWS
3139	const char * args[] = {path, "-startvm", idStr, "-capture", 0 };
3140	#else
3141	Utf8Str name = mUserData->mName;
3142	const char * args[] = {path, "-comment", name, "-startvm", idStr, "-capture", 0 };
3143	#endif
3144	vrc = RTProcCreate (path, args, env, 0, &pid);
3145	}
3146	else
3147	{
3148	RTEnvDestroy (env);
3149	return setError (E_INVALIDARG,
3150	tr ("Invalid session type: '%ls'"), aType);
3151	}
3152
3153	RTEnvDestroy (env);
3154
3155	if (VBOX_FAILURE (vrc))
3156	return setError (E_FAIL,
3157	tr ("Could not launch a process for the machine '%ls' (%Vrc)"),
3158	mUserData->mName.raw(), vrc);
3159
3160	LogFlowThisFunc (("launched.pid=%d(0x%x)\n", pid, pid));
3161
3162	/*
3163	* Note that we don't leave the lock here before calling the client,
3164	* because it doesn't need to call us back if called with a NULL argument.
3165	* Leaving the lock herer is dangerous because we didn't prepare the
3166	* launch data yet, but the client we've just started may happen to be
3167	* too fast and call openSession() that will fail (because of PID, etc.),
3168	* so that the Machine will never get out of the Spawning session state.
3169	*/
3170
3171	/* inform the session that it will be a remote one */
3172	LogFlowThisFunc (("Calling AssignMachine (NULL)...\n"));
3173	HRESULT rc = aControl->AssignMachine (NULL);
3174	LogFlowThisFunc (("AssignMachine (NULL) returned %08X\n", rc));
3175
3176	if (FAILED (rc))
3177	{
3178	/* restore the session state */
3179	mData->mSession.mState = SessionState_SessionClosed;
3180	/* The failure may w/o any error info (from RPC), so provide one */
3181	return setError (rc,
3182	tr ("Failed to assign the machine to the session"));
3183	}
3184
3185	/* attach launch data to the machine */
3186	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3187	mData->mSession.mRemoteControls.push_back (aControl);
3188	mData->mSession.mProgress = aProgress;
3189	mData->mSession.mPid = pid;
3190	mData->mSession.mState = SessionState_SessionSpawning;
3191	mData->mSession.mType = type;
3192
3193	LogFlowThisFuncLeave();
3194	return S_OK;
3195	}
3196
3197	/**
3198	* @note Locks this object for writing, calls the client process
3199	* (outside the lock).
3200	*/
3201	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3202	{
3203	LogFlowThisFuncEnter();
3204
3205	AssertReturn (aControl, E_FAIL);
3206
3207	AutoCaller autoCaller (this);
3208	CheckComRCReturnRC (autoCaller.rc());
3209
3210	AutoLock alock (this);
3211
3212	if (!mData->mRegistered)
3213	return setError (E_UNEXPECTED,
3214	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3215
3216	LogFlowThisFunc (("mSession.state=%d\n", mData->mSession.mState));
3217
3218	if (mData->mSession.mState != SessionState_SessionOpen)
3219	return setError (E_ACCESSDENIED,
3220	tr ("The machine '%ls' does not have an open session"),
3221	mUserData->mName.raw());
3222
3223	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
3224
3225	/*
3226	* Get the console from the direct session (note that we don't leave the
3227	* lock here because GetRemoteConsole must not call us back).
3228	*/
3229	ComPtr <IConsole> console;
3230	HRESULT rc = mData->mSession.mDirectControl->
3231	GetRemoteConsole (console.asOutParam());
3232	if (FAILED (rc))
3233	{
3234	/* The failure may w/o any error info (from RPC), so provide one */
3235	return setError (rc,
3236	tr ("Failed to get a console object from the direct session"));
3237	}
3238
3239	ComAssertRet (!console.isNull(), E_FAIL);
3240
3241	ComObjPtr <SessionMachine> sessionMachine = mData->mSession.mMachine;
3242	AssertReturn (!sessionMachine.isNull(), E_FAIL);
3243
3244	/*
3245	* Leave the lock before calling the client process. It's safe here
3246	* since the only thing to do after we get the lock again is to add
3247	* the remote control to the list (which doesn't directly influence
3248	* anything).
3249	*/
3250	alock.leave();
3251
3252	/* attach the remote session to the machine */
3253	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3254	rc = aControl->AssignRemoteMachine (sessionMachine, console);
3255	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3256
3257	/* The failure may w/o any error info (from RPC), so provide one */
3258	if (FAILED (rc))
3259	return setError (rc,
3260	tr ("Failed to assign the machine to the session"));
3261
3262	alock.enter();
3263
3264	/* need to revalidate the state after entering the lock again */
3265	if (mData->mSession.mState != SessionState_SessionOpen)
3266	{
3267	aControl->Uninitialize();
3268
3269	return setError (E_ACCESSDENIED,
3270	tr ("The machine '%ls' does not have an open session"),
3271	mUserData->mName.raw());
3272	}
3273
3274	/* store the control in the list */
3275	mData->mSession.mRemoteControls.push_back (aControl);
3276
3277	LogFlowThisFuncLeave();
3278	return S_OK;
3279	}
3280
3281	/**
3282	* Checks that the registered flag of the machine can be set according to
3283	* the argument and sets it. On success, commits and saves all settings.
3284	*
3285	* @note When this machine is inaccessible, the only valid value for \a
3286	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
3287	* inaccessible machines are not currently supported. Note that unregistering
3288	* an inaccessible machine will \b uninitialize this machine object. Therefore,
3289	* the caller must make sure there are no active Machine::addCaller() calls
3290	* on the current thread because this will block Machine::uninit().
3291	*
3292	* @note Locks this object and children for writing!
3293	*/
3294	HRESULT Machine::trySetRegistered (BOOL aRegistered)
3295	{
3296	AutoLimitedCaller autoCaller (this);
3297	AssertComRCReturnRC (autoCaller.rc());
3298
3299	AutoLock alock (this);
3300
3301	/* wait for state dependants to drop to zero */
3302	checkStateDependencies (alock);
3303
3304	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
3305
3306	if (!mData->mAccessible)
3307	{
3308	/* A special case: the machine is not accessible. */
3309
3310	/* inaccessible machines can only be unregistered */
3311	AssertReturn (!aRegistered, E_FAIL);
3312
3313	/* Uninitialize ourselves here because currently there may be no
3314	* unregistered that are inaccessible (this state combination is not
3315	* supported). Note releasing the caller and leaving the lock before
3316	* calling uninit() */
3317
3318	alock.leave();
3319	autoCaller.release();
3320
3321	uninit();
3322
3323	return S_OK;
3324	}
3325
3326	AssertReturn (autoCaller.state() == Ready, E_FAIL);
3327
3328	if (aRegistered)
3329	{
3330	if (mData->mRegistered)
3331	return setError (E_FAIL,
3332	tr ("The machine '%ls' with UUID {%s} is already registered"),
3333	mUserData->mName.raw(),
3334	mData->mUuid.toString().raw());
3335	}
3336	else
3337	{
3338	if (mData->mMachineState == MachineState_Saved)
3339	return setError (E_FAIL,
3340	tr ("Cannot unregister the machine '%ls' because it "
3341	"is in the Saved state"),
3342	mUserData->mName.raw());
3343
3344	size_t snapshotCount = 0;
3345	if (mData->mFirstSnapshot)
3346	snapshotCount = mData->mFirstSnapshot->descendantCount() + 1;
3347	if (snapshotCount)
3348	return setError (E_FAIL,
3349	tr ("Cannot unregister the machine '%ls' because it "
3350	"has %d snapshots"),
3351	mUserData->mName.raw(), snapshotCount);
3352
3353	if (mData->mSession.mState != SessionState_SessionClosed)
3354	return setError (E_FAIL,
3355	tr ("Cannot unregister the machine '%ls' because it has an "
3356	"open session"),
3357	mUserData->mName.raw());
3358
3359	if (mHDData->mHDAttachments.size() != 0)
3360	return setError (E_FAIL,
3361	tr ("Cannot unregister the machine '%ls' because it "
3362	"has %d hard disks attached"),
3363	mUserData->mName.raw(), mHDData->mHDAttachments.size());
3364	}
3365
3366	/* Ensure the settings are saved. If we are going to be registered and
3367	* isConfigLocked() is FALSE then it means that no config file exists yet,
3368	* so create it. */
3369	if (isModified() \|\| (aRegistered && !isConfigLocked()))
3370	{
3371	HRESULT rc = saveSettings();
3372	CheckComRCReturnRC (rc);
3373	}
3374
3375	mData->mRegistered = aRegistered;
3376
3377	/* inform the USB proxy about all attached/detached USB filters */
3378	mUSBController->onMachineRegistered (aRegistered);
3379
3380	return S_OK;
3381	}
3382
3383	/**
3384	* Increases the number of objects dependent on the machine state or on the
3385	* registered state. Guarantees that these two states will not change at
3386	* least until #releaseStateDependency() is called.
3387	*
3388	* Depending on the @a aDepType value, additional state checks may be
3389	* made. These checks will set extended error info on failure. See
3390	* #checkStateDependency() for more info.
3391	*
3392	* If this method returns a failure, the dependency is not added and the
3393	* caller is not allowed to rely on any particular machine state or
3394	* registration state value and may return the failed result code to the
3395	* upper level.
3396	*
3397	* @param aDepType Dependency type to add.
3398	* @param aState Current machine state (NULL if not interested).
3399	* @param aRegistered Current registered state (NULL if not interested).
3400	*/
3401	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
3402	MachineState_T aState / = NULL */,
3403	BOOL aRegistered / = NULL */)
3404	{
3405	AutoCaller autoCaller (this);
3406	AssertComRCReturnRC (autoCaller.rc());
3407
3408	AutoLock alock (this);
3409
3410	if (mData->mWaitingStateDeps && mData->mMachineStateDeps == 0)
3411	{
3412	/* checkStateDependencies() is at the point after RTSemEventWait() but
3413	* before entering the lock. Report an error. It would be better to
3414	* leave the lock now and re-schedule ourselves, but we don't have a
3415	* framework that can guarantee such a behavior in 100% cases. */
3416
3417	AssertFailed(); /* <-- this is just to see how often it can happen */
3418
3419	return setError (E_ACCESSDENIED,
3420	tr ("The machine is busy: state transition is in progress. "
3421	"Retry the operation (state is %d)"),
3422	mData->mMachineState);
3423	}
3424
3425	HRESULT rc = checkStateDependency (aDepType);
3426	CheckComRCReturnRC (rc);
3427
3428	if (aState)
3429	*aState = mData->mMachineState;
3430	if (aRegistered)
3431	*aRegistered = mData->mRegistered;
3432
3433	++ mData->mMachineStateDeps;
3434
3435	return S_OK;
3436	}
3437
3438	/**
3439	* Decreases the number of objects dependent on the machine state.
3440	* Must always complete the #addStateDependency() call after the state
3441	* dependency no more necessary.
3442	*/
3443	void Machine::releaseStateDependency()
3444	{
3445	AutoCaller autoCaller (this);
3446	AssertComRCReturnVoid (autoCaller.rc());
3447
3448	AutoLock alock (this);
3449
3450	AssertReturnVoid (mData->mMachineStateDeps > 0);
3451	-- mData->mMachineStateDeps;
3452
3453	if (mData->mMachineStateDeps == 0 &&
3454	mData->mZeroMachineStateDepsSem != NIL_RTSEMEVENT)
3455	{
3456	/* inform checkStateDependencies() that there are no more deps */
3457	RTSemEventSignal (mData->mZeroMachineStateDepsSem);
3458	}
3459	}
3460
3461	// protected methods
3462	/////////////////////////////////////////////////////////////////////////////
3463
3464	/**
3465	* Performs machine state checks based on the @a aDepType value. If a check
3466	* fails, this method will set extended error info, otherwise it will return
3467	* S_OK. It is supposed, that on failure, the caller will immedieately return
3468	* the return value of this method to the upper level.
3469	*
3470	* When @a aDepType is AnyStateDep, this method always returns S_OK.
3471	*
3472	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
3473	* current state of this machine object allows to change settings of the
3474	* machine (i.e. the machine is not registered, or registered but not running
3475	* and not saved). It is useful to call this method from Machine setters
3476	* before performing any change.
3477	*
3478	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
3479	* as for MutableStateDep except that if the machine is saved, S_OK is also
3480	* returned. This is useful in setters which allow changing machine
3481	* properties when it is in the saved state.
3482	*
3483	* @param aDepType Dependency type to check.
3484	*
3485	* @note External classes should use #addStateDependency() and
3486	* #releaseStateDependency() methods or the smart AutoStateDependency
3487	* template.
3488	*
3489	* @note This method must be called from under this object's lock.
3490	*/
3491	HRESULT Machine::checkStateDependency (StateDependency aDepType)
3492	{
3493	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
3494
3495	switch (aDepType)
3496	{
3497	case AnyStateDep:
3498	{
3499	break;
3500	}
3501	case MutableStateDep:
3502	{
3503	if (mData->mRegistered &&
3504	(mType != IsSessionMachine \|\|
3505	mData->mMachineState > MachineState_Paused \|\|
3506	mData->mMachineState == MachineState_Saved))
3507	return setError (E_ACCESSDENIED,
3508	tr ("The machine is not mutable (state is %d)"),
3509	mData->mMachineState);
3510	break;
3511	}
3512	case MutableOrSavedStateDep:
3513	{
3514	if (mData->mRegistered &&
3515	(mType != IsSessionMachine \|\|
3516	mData->mMachineState > MachineState_Paused))
3517	return setError (E_ACCESSDENIED,
3518	tr ("The machine is not mutable (state is %d)"),
3519	mData->mMachineState);
3520	break;
3521	}
3522	}
3523
3524	return S_OK;
3525	}
3526
3527	/**
3528	* Helper to initialize all associated child objects
3529	* and allocate data structures.
3530	*
3531	* This method must be called as a part of the object's initialization
3532	* procedure (usually done in the #init() method).
3533	*
3534	* @note Must be called only from #init() or from #registeredInit().
3535	*/
3536	HRESULT Machine::initDataAndChildObjects()
3537	{
3538	AutoCaller autoCaller (this);
3539	AssertComRCReturnRC (autoCaller.rc());
3540	AssertComRCReturn (autoCaller.state() == InInit \|\|
3541	autoCaller.state() == Limited, E_FAIL);
3542
3543	/* allocate data structures */
3544	mSSData.allocate();
3545	mUserData.allocate();
3546	mHWData.allocate();
3547	mHDData.allocate();
3548
3549	/* initialize mOSTypeId */
3550	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
3551
3552	/* create associated BIOS settings object */
3553	unconst (mBIOSSettings).createObject();
3554	mBIOSSettings->init (this);
3555
3556	#ifdef VBOX_VRDP
3557	/* create an associated VRDPServer object (default is disabled) */
3558	unconst (mVRDPServer).createObject();
3559	mVRDPServer->init (this);
3560	#endif
3561
3562	/* create an associated DVD drive object */
3563	unconst (mDVDDrive).createObject();
3564	mDVDDrive->init (this);
3565
3566	/* create an associated floppy drive object */
3567	unconst (mFloppyDrive).createObject();
3568	mFloppyDrive->init (this);
3569
3570	/* create associated serial port objects */
3571	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
3572	{
3573	unconst (mSerialPorts [slot]).createObject();
3574	mSerialPorts [slot]->init (this, slot);
3575	}
3576
3577	/* create associated parallel port objects */
3578	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
3579	{
3580	unconst (mParallelPorts [slot]).createObject();
3581	mParallelPorts [slot]->init (this, slot);
3582	}
3583
3584	/* create the audio adapter object (always present, default is disabled) */
3585	unconst (mAudioAdapter).createObject();
3586	mAudioAdapter->init (this);
3587
3588	/* create the USB controller object (always present, default is disabled) */
3589	unconst (mUSBController).createObject();
3590	mUSBController->init (this);
3591
3592	/* create associated network adapter objects */
3593	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
3594	{
3595	unconst (mNetworkAdapters [slot]).createObject();
3596	mNetworkAdapters [slot]->init (this, slot);
3597	}
3598
3599	return S_OK;
3600	}
3601
3602	/**
3603	* Helper to uninitialize all associated child objects
3604	* and to free all data structures.
3605	*
3606	* This method must be called as a part of the object's uninitialization
3607	* procedure (usually done in the #uninit() method).
3608	*
3609	* @note Must be called only from #uninit() or from #registeredInit().
3610	*/
3611	void Machine::uninitDataAndChildObjects()
3612	{
3613	AutoCaller autoCaller (this);
3614	AssertComRCReturnVoid (autoCaller.rc());
3615	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
3616	autoCaller.state() == Limited);
3617
3618	/* uninit all children using addDependentChild()/removeDependentChild()
3619	* in their init()/uninit() methods */
3620	uninitDependentChildren();
3621
3622	/* tell all our other child objects we've been uninitialized */
3623
3624	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
3625	{
3626	if (mNetworkAdapters [slot])
3627	{
3628	mNetworkAdapters [slot]->uninit();
3629	unconst (mNetworkAdapters [slot]).setNull();
3630	}
3631	}
3632
3633	if (mUSBController)
3634	{
3635	mUSBController->uninit();
3636	unconst (mUSBController).setNull();
3637	}
3638
3639	if (mAudioAdapter)
3640	{
3641	mAudioAdapter->uninit();
3642	unconst (mAudioAdapter).setNull();
3643	}
3644
3645	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
3646	{
3647	if (mParallelPorts [slot])
3648	{
3649	mParallelPorts [slot]->uninit();
3650	unconst (mParallelPorts [slot]).setNull();
3651	}
3652	}
3653
3654	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
3655	{
3656	if (mSerialPorts [slot])
3657	{
3658	mSerialPorts [slot]->uninit();
3659	unconst (mSerialPorts [slot]).setNull();
3660	}
3661	}
3662
3663	if (mFloppyDrive)
3664	{
3665	mFloppyDrive->uninit();
3666	unconst (mFloppyDrive).setNull();
3667	}
3668
3669	if (mDVDDrive)
3670	{
3671	mDVDDrive->uninit();
3672	unconst (mDVDDrive).setNull();
3673	}
3674
3675	#ifdef VBOX_VRDP
3676	if (mVRDPServer)
3677	{
3678	mVRDPServer->uninit();
3679	unconst (mVRDPServer).setNull();
3680	}
3681	#endif
3682
3683	if (mBIOSSettings)
3684	{
3685	mBIOSSettings->uninit();
3686	unconst (mBIOSSettings).setNull();
3687	}
3688
3689	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
3690	* instance is uninitialized; SessionMachine instances refer to real
3691	* Machine hard disks). This is necessary for a clean re-initialization of
3692	* the VM after successfully re-checking the accessibility state. Note
3693	* that in case of normal Machine or SnapshotMachine uninitialization (as
3694	* a result of unregistering or discarding the snapshot), outdated hard
3695	* disk attachments will already be uninitialized and deleted, so this
3696	* code will not affect them. */
3697	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
3698	{
3699	for (HDData::HDAttachmentList::const_iterator it =
3700	mHDData->mHDAttachments.begin();
3701	it != mHDData->mHDAttachments.end();
3702	++ it)
3703	{
3704	(*it)->hardDisk()->setMachineId (Guid());
3705	}
3706	}
3707
3708	if (mType == IsMachine)
3709	{
3710	/* reset some important fields of mData */
3711	mData->mCurrentSnapshot.setNull();
3712	mData->mFirstSnapshot.setNull();
3713	}
3714
3715	/* free data structures (the essential mData structure is not freed here
3716	* since it may be still in use) */
3717	mHDData.free();
3718	mHWData.free();
3719	mUserData.free();
3720	mSSData.free();
3721	}
3722
3723
3724	/**
3725	* Chhecks that there are no state dependants. If necessary, waits for the
3726	* number of dependants to drop to zero. Must be called from under
3727	* this object's lock.
3728	*
3729	* @param aLock This object's lock.
3730	*
3731	* @note This method may leave the object lock during its execution!
3732	*/
3733	void Machine::checkStateDependencies (AutoLock &aLock)
3734	{
3735	AssertReturnVoid (isLockedOnCurrentThread());
3736	AssertReturnVoid (aLock.belongsTo (this));
3737
3738	/* Wait for all state dependants if necessary */
3739	if (mData->mMachineStateDeps > 0)
3740	{
3741	/* lazy creation */
3742	if (mData->mZeroMachineStateDepsSem == NIL_RTSEMEVENT)
3743	RTSemEventCreate (&mData->mZeroMachineStateDepsSem);
3744
3745	LogFlowThisFunc (("Waiting for state deps (%d) to drop to zero...\n",
3746	mData->mMachineStateDeps));
3747
3748	mData->mWaitingStateDeps = TRUE;
3749
3750	aLock.leave();
3751
3752	RTSemEventWait (mData->mZeroMachineStateDepsSem, RT_INDEFINITE_WAIT);
3753
3754	aLock.enter();
3755
3756	mData->mWaitingStateDeps = FALSE;
3757	}
3758	}
3759
3760	/**
3761	* Helper to change the machine state.
3762	*
3763	* @note Locks this object for writing.
3764	*/
3765	HRESULT Machine::setMachineState (MachineState_T aMachineState)
3766	{
3767	LogFlowThisFuncEnter();
3768	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
3769
3770	AutoCaller autoCaller (this);
3771	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3772
3773	AutoLock alock (this);
3774
3775	/* wait for state dependants to drop to zero */
3776	/// @todo it may be potentially unsafe to leave the lock here as
3777	// the below method does. Needs some thinking. The easiest solution may
3778	// be to provide a separate mutex for mMachineState and mRegistered.
3779	checkStateDependencies (alock);
3780
3781	if (mData->mMachineState != aMachineState)
3782	{
3783	mData->mMachineState = aMachineState;
3784
3785	RTTIMESPEC time;
3786	mData->mLastStateChange = RTTimeSpecGetMilli(RTTimeNow(&time));
3787
3788	mParent->onMachineStateChange (mData->mUuid, aMachineState);
3789	}
3790
3791	LogFlowThisFuncLeave();
3792	return S_OK;
3793	}
3794
3795	/**
3796	* Searches for a shared folder with the given logical name
3797	* in the collection of shared folders.
3798	*
3799	* @param aName logical name of the shared folder
3800	* @param aSharedFolder where to return the found object
3801	* @param aSetError whether to set the error info if the folder is
3802	* not found
3803	* @return
3804	* S_OK when found or E_INVALIDARG when not found
3805	*
3806	* @note
3807	* must be called from under the object's lock!
3808	*/
3809	HRESULT Machine::findSharedFolder (const BSTR aName,
3810	ComObjPtr <SharedFolder> &aSharedFolder,
3811	bool aSetError /* = false */)
3812	{
3813	bool found = false;
3814	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
3815	!found && it != mHWData->mSharedFolders.end();
3816	++ it)
3817	{
3818	AutoLock alock (*it);
3819	found = (*it)->name() == aName;
3820	if (found)
3821	aSharedFolder = *it;
3822	}
3823
3824	HRESULT rc = found ? S_OK : E_INVALIDARG;
3825
3826	if (aSetError && !found)
3827	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
3828
3829	return rc;
3830	}
3831
3832	/**
3833	* Loads all the VM settings by walking down the <Machine> node.
3834	*
3835	* @param aRegistered true when the machine is being loaded on VirtualBox
3836	* startup
3837	*
3838	* @note This method is intended to be called only from init(), so it assumes
3839	* all machine data fields have appropriate default values when it is called.
3840	*
3841	* @note Doesn't lock any objects.
3842	*/
3843	HRESULT Machine::loadSettings (bool aRegistered)
3844	{
3845	LogFlowThisFuncEnter();
3846	AssertReturn (mType == IsMachine, E_FAIL);
3847
3848	AutoCaller autoCaller (this);
3849	AssertReturn (autoCaller.state() == InInit, E_FAIL);
3850
3851	HRESULT rc = S_OK;
3852
3853	CFGHANDLE configLoader = NULL;
3854	char *loaderError = NULL;
3855	int vrc = CFGLDRLoad (&configLoader,
3856	Utf8Str (mData->mConfigFileFull), mData->mHandleCfgFile,
3857	XmlSchemaNS, true, cfgLdrEntityResolver,
3858	&loaderError);
3859	if (VBOX_FAILURE (vrc))
3860	{
3861	rc = setError (E_FAIL,
3862	tr ("Could not load the settings file '%ls' (%Vrc)%s%s"),
3863	mData->mConfigFileFull.raw(), vrc,
3864	loaderError ? ".\n" : "", loaderError ? loaderError : "");
3865
3866	if (loaderError)
3867	RTMemTmpFree (loaderError);
3868
3869	LogFlowThisFuncLeave();
3870	return rc;
3871	}
3872
3873	/*
3874	* When reading the XML, we assume it has been validated, so we don't
3875	* do any structural checks here, Just Assert() some things.
3876	*/
3877
3878	CFGNODE machineNode = 0;
3879	CFGLDRGetNode (configLoader, "VirtualBox/Machine", 0, &machineNode);
3880
3881	do
3882	{
3883	ComAssertBreak (machineNode, rc = E_FAIL);
3884
3885	/* uuid (required) */
3886	Guid id;
3887	CFGLDRQueryUUID (machineNode, "uuid", id.ptr());
3888
3889	/* If the stored UUID is not empty, it means the registered machine
3890	* is being loaded. Compare the loaded UUID with the stored one taken
3891	* from the global registry. */
3892	if (!mData->mUuid.isEmpty())
3893	{
3894	if (mData->mUuid != id)
3895	{
3896	rc = setError (E_FAIL,
3897	tr ("Machine UUID {%Vuuid} in '%ls' doesn't match its "
3898	"UUID {%s} in the registry file '%ls'"),
3899	id.raw(), mData->mConfigFileFull.raw(),
3900	mData->mUuid.toString().raw(),
3901	mParent->settingsFileName().raw());
3902	break;
3903	}
3904	}
3905	else
3906	unconst (mData->mUuid) = id;
3907
3908	/* name (required) */
3909	CFGLDRQueryBSTR (machineNode, "name", mUserData->mName.asOutParam());
3910
3911	/* nameSync (optional, default is true) */
3912	{
3913	bool nameSync = true;
3914	CFGLDRQueryBool (machineNode, "nameSync", &nameSync);
3915	mUserData->mNameSync = nameSync;
3916	}
3917
3918	/* Description (optional, default is null) */
3919	{
3920	CFGNODE descNode = 0;
3921	CFGLDRGetChildNode (machineNode, "Description", 0, &descNode);
3922	if (descNode)
3923	{
3924	CFGLDRQueryBSTR (descNode, NULL,
3925	mUserData->mDescription.asOutParam());
3926	CFGLDRReleaseNode (descNode);
3927	}
3928	else
3929	mUserData->mDescription.setNull();
3930	}
3931
3932	/* OSType (required) */
3933	{
3934	CFGLDRQueryBSTR (machineNode, "OSType",
3935	mUserData->mOSTypeId.asOutParam());
3936
3937	/* look up the object by Id to check it is valid */
3938	ComPtr <IGuestOSType> guestOSType;
3939	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
3940	guestOSType.asOutParam());
3941	if (FAILED (rc))
3942	break;
3943	}
3944
3945	/* stateFile (optional) */
3946	{
3947	Bstr stateFilePath;
3948	CFGLDRQueryBSTR (machineNode, "stateFile", stateFilePath.asOutParam());
3949	if (stateFilePath)
3950	{
3951	Utf8Str stateFilePathFull = stateFilePath;
3952	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
3953	if (VBOX_FAILURE (vrc))
3954	{
3955	rc = setError (E_FAIL,
3956	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
3957	stateFilePath.raw(), vrc);
3958	break;
3959	}
3960	mSSData->mStateFilePath = stateFilePathFull;
3961	}
3962	else
3963	mSSData->mStateFilePath.setNull();
3964	}
3965
3966	/*
3967	* currentSnapshot ID (optional)
3968	* Note that due to XML Schema constaraints this attribute, when present,
3969	* will guaranteedly refer to an existing snapshot definition in XML
3970	*/
3971	Guid currentSnapshotId;
3972	CFGLDRQueryUUID (machineNode, "currentSnapshot", currentSnapshotId.ptr());
3973
3974	/* snapshotFolder (optional) */
3975	{
3976	Bstr folder;
3977	CFGLDRQueryBSTR (machineNode, "snapshotFolder", folder.asOutParam());
3978	rc = COMSETTER(SnapshotFolder) (folder);
3979	if (FAILED (rc))
3980	break;
3981	}
3982
3983	/* lastStateChange (optional, for compatiblity) */
3984	{
3985	int64_t lastStateChange = 0;
3986	CFGLDRQueryDateTime (machineNode, "lastStateChange", &lastStateChange);
3987	if (lastStateChange == 0)
3988	{
3989	/// @todo (dmik) until lastStateChange is the required attribute,
3990	// we simply set it to the current time if missing in the config
3991	RTTIMESPEC time;
3992	lastStateChange = RTTimeSpecGetMilli (RTTimeNow (&time));
3993	}
3994	mData->mLastStateChange = lastStateChange;
3995	}
3996
3997	/* aborted (optional) */
3998	bool aborted = false;
3999	CFGLDRQueryBool (machineNode, "aborted", &aborted);
4000
4001	/* currentStateModified (optional, default is true) */
4002	mData->mCurrentStateModified = TRUE;
4003	{
4004	bool val = true;
4005	CFGLDRQueryBool (machineNode, "currentStateModified", &val);
4006	mData->mCurrentStateModified = val;
4007	}
4008
4009	/*
4010	* note: all mUserData members must be assigned prior this point because
4011	* we need to commit changes in order to let mUserData be shared by all
4012	* snapshot machine instances.
4013	*/
4014	mUserData.commitCopy();
4015
4016	/* Snapshot node (optional) */
4017	{
4018	CFGNODE snapshotNode = 0;
4019	CFGLDRGetChildNode (machineNode, "Snapshot", 0, &snapshotNode);
4020	if (snapshotNode)
4021	{
4022	/* read all snapshots recursively */
4023	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
4024	CFGLDRReleaseNode (snapshotNode);
4025	if (FAILED (rc))
4026	break;
4027	}
4028	}
4029
4030	/* Hardware node (required) */
4031	{
4032	CFGNODE hardwareNode = 0;
4033	CFGLDRGetChildNode (machineNode, "Hardware", 0, &hardwareNode);
4034	ComAssertBreak (hardwareNode, rc = E_FAIL);
4035	rc = loadHardware (hardwareNode);
4036	CFGLDRReleaseNode (hardwareNode);
4037	if (FAILED (rc))
4038	break;
4039	}
4040
4041	/* HardDiskAttachments node (required) */
4042	{
4043	CFGNODE hdasNode = 0;
4044	CFGLDRGetChildNode (machineNode, "HardDiskAttachments", 0, &hdasNode);
4045	ComAssertBreak (hdasNode, rc = E_FAIL);
4046
4047	rc = loadHardDisks (hdasNode, aRegistered);
4048	CFGLDRReleaseNode (hdasNode);
4049	if (FAILED (rc))
4050	break;
4051	}
4052
4053	/*
4054	* NOTE: the assignment below must be the last thing to do,
4055	* otherwise it will be not possible to change the settings
4056	* somewehere in the code above because all setters will be
4057	* blocked by checkStateDependency (MutableStateDep).
4058	*/
4059
4060	/* set the machine state to Aborted or Saved when appropriate */
4061	if (aborted)
4062	{
4063	Assert (!mSSData->mStateFilePath);
4064	mSSData->mStateFilePath.setNull();
4065
4066	/* no need to use setMachineState() during init() */
4067	mData->mMachineState = MachineState_Aborted;
4068	}
4069	else if (mSSData->mStateFilePath)
4070	{
4071	/* no need to use setMachineState() during init() */
4072	mData->mMachineState = MachineState_Saved;
4073	}
4074	}
4075	while (0);
4076
4077	if (machineNode)
4078	CFGLDRReleaseNode (machineNode);
4079
4080	CFGLDRFree (configLoader);
4081
4082	LogFlowThisFuncLeave();
4083	return rc;
4084	}
4085
4086	/**
4087	* Recursively loads all snapshots starting from the given.
4088	*
4089	* @param aNode <Snapshot> node
4090	* @param aCurSnapshotId current snapshot ID from the settings file
4091	* @param aParentSnapshot parent snapshot
4092	*/
4093	HRESULT Machine::loadSnapshot (CFGNODE aNode, const Guid &aCurSnapshotId,
4094	Snapshot *aParentSnapshot)
4095	{
4096	AssertReturn (aNode, E_INVALIDARG);
4097	AssertReturn (mType == IsMachine, E_FAIL);
4098
4099	// create a snapshot machine object
4100	ComObjPtr <SnapshotMachine> snapshotMachine;
4101	snapshotMachine.createObject();
4102
4103	HRESULT rc = S_OK;
4104
4105	Guid uuid; // required
4106	CFGLDRQueryUUID (aNode, "uuid", uuid.ptr());
4107
4108	Bstr stateFilePath; // optional
4109	CFGLDRQueryBSTR (aNode, "stateFile", stateFilePath.asOutParam());
4110	if (stateFilePath)
4111	{
4112	Utf8Str stateFilePathFull = stateFilePath;
4113	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4114	if (VBOX_FAILURE (vrc))
4115	return setError (E_FAIL,
4116	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
4117	stateFilePath.raw(), vrc);
4118
4119	stateFilePath = stateFilePathFull;
4120	}
4121
4122	do
4123	{
4124	// Hardware node (required)
4125	CFGNODE hardwareNode = 0;
4126	CFGLDRGetChildNode (aNode, "Hardware", 0, &hardwareNode);
4127	ComAssertBreak (hardwareNode, rc = E_FAIL);
4128
4129	do
4130	{
4131	// HardDiskAttachments node (required)
4132	CFGNODE hdasNode = 0;
4133	CFGLDRGetChildNode (aNode, "HardDiskAttachments", 0, &hdasNode);
4134	ComAssertBreak (hdasNode, rc = E_FAIL);
4135
4136	// initialize the snapshot machine
4137	rc = snapshotMachine->init (this, hardwareNode, hdasNode,
4138	uuid, stateFilePath);
4139
4140	CFGLDRReleaseNode (hdasNode);
4141	}
4142	while (0);
4143
4144	CFGLDRReleaseNode (hardwareNode);
4145	}
4146	while (0);
4147
4148	if (FAILED (rc))
4149	return rc;
4150
4151	// create a snapshot object
4152	ComObjPtr <Snapshot> snapshot;
4153	snapshot.createObject();
4154
4155	{
4156	Bstr name; // required
4157	CFGLDRQueryBSTR (aNode, "name", name.asOutParam());
4158
4159	LONG64 timeStamp = 0; // required
4160	CFGLDRQueryDateTime (aNode, "timeStamp", &timeStamp);
4161
4162	Bstr description; // optional
4163	{
4164	CFGNODE descNode = 0;
4165	CFGLDRGetChildNode (aNode, "Description", 0, &descNode);
4166	if (descNode)
4167	{
4168	CFGLDRQueryBSTR (descNode, NULL, description.asOutParam());
4169	CFGLDRReleaseNode (descNode);
4170	}
4171	}
4172
4173	// initialize the snapshot
4174	rc = snapshot->init (uuid, name, description, timeStamp,
4175	snapshotMachine, aParentSnapshot);
4176	if (FAILED (rc))
4177	return rc;
4178	}
4179
4180	// memorize the first snapshot if necessary
4181	if (!mData->mFirstSnapshot)
4182	mData->mFirstSnapshot = snapshot;
4183
4184	// memorize the current snapshot when appropriate
4185	if (!mData->mCurrentSnapshot && snapshot->data().mId == aCurSnapshotId)
4186	mData->mCurrentSnapshot = snapshot;
4187
4188	// Snapshots node (optional)
4189	{
4190	CFGNODE snapshotsNode = 0;
4191	CFGLDRGetChildNode (aNode, "Snapshots", 0, &snapshotsNode);
4192	if (snapshotsNode)
4193	{
4194	unsigned cbDisks = 0;
4195	CFGLDRCountChildren (snapshotsNode, "Snapshot", &cbDisks);
4196	for (unsigned i = 0; i < cbDisks && SUCCEEDED (rc); i++)
4197	{
4198	CFGNODE snapshotNode;
4199	CFGLDRGetChildNode (snapshotsNode, "Snapshot", i, &snapshotNode);
4200	ComAssertBreak (snapshotNode, rc = E_FAIL);
4201
4202	rc = loadSnapshot (snapshotNode, aCurSnapshotId, snapshot);
4203
4204	CFGLDRReleaseNode (snapshotNode);
4205	}
4206
4207	CFGLDRReleaseNode (snapshotsNode);
4208	}
4209	}
4210
4211	return rc;
4212	}
4213
4214	/**
4215	* @param aNode <Hardware> node
4216	*/
4217	HRESULT Machine::loadHardware (CFGNODE aNode)
4218	{
4219	AssertReturn (aNode, E_INVALIDARG);
4220	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
4221
4222	/* CPU node (currently not required) */
4223	{
4224	/* default value in case the node is not there */
4225	mHWData->mHWVirtExEnabled = TriStateBool_Default;
4226
4227	CFGNODE cpuNode = 0;
4228	CFGLDRGetChildNode (aNode, "CPU", 0, &cpuNode);
4229	if (cpuNode)
4230	{
4231	CFGNODE hwVirtExNode = 0;
4232	CFGLDRGetChildNode (cpuNode, "HardwareVirtEx", 0, &hwVirtExNode);
4233	if (hwVirtExNode)
4234	{
4235	Bstr hwVirtExEnabled;
4236	CFGLDRQueryBSTR (hwVirtExNode, "enabled", hwVirtExEnabled.asOutParam());
4237	if (hwVirtExEnabled == L"false")
4238	mHWData->mHWVirtExEnabled = TriStateBool_False;
4239	else if (hwVirtExEnabled == L"true")
4240	mHWData->mHWVirtExEnabled = TriStateBool_True;
4241	else
4242	mHWData->mHWVirtExEnabled = TriStateBool_Default;
4243	CFGLDRReleaseNode (hwVirtExNode);
4244	}
4245	CFGLDRReleaseNode (cpuNode);
4246	}
4247	}
4248
4249	/* Memory node (required) */
4250	{
4251	CFGNODE memoryNode = 0;
4252	CFGLDRGetChildNode (aNode, "Memory", 0, &memoryNode);
4253	ComAssertRet (memoryNode, E_FAIL);
4254
4255	uint32_t RAMSize;
4256	CFGLDRQueryUInt32 (memoryNode, "RAMSize", &RAMSize);
4257	mHWData->mMemorySize = RAMSize;
4258	CFGLDRReleaseNode (memoryNode);
4259	}
4260
4261	/* Boot node (required) */
4262	{
4263	/* reset all boot order positions to NoDevice */
4264	for (size_t i = 0; i < ELEMENTS (mHWData->mBootOrder); i++)
4265	mHWData->mBootOrder [i] = DeviceType_NoDevice;
4266
4267	CFGNODE bootNode = 0;
4268	CFGLDRGetChildNode (aNode, "Boot", 0, &bootNode);
4269	ComAssertRet (bootNode, E_FAIL);
4270
4271	HRESULT rc = S_OK;
4272
4273	unsigned cOrder;
4274	CFGLDRCountChildren (bootNode, "Order", &cOrder);
4275	for (unsigned i = 0; i < cOrder; i++)
4276	{
4277	CFGNODE orderNode = 0;
4278	CFGLDRGetChildNode (bootNode, "Order", i, &orderNode);
4279	ComAssertBreak (orderNode, rc = E_FAIL);
4280
4281	/* position (required) */
4282	/* position unicity is guaranteed by XML Schema */
4283	uint32_t position = 0;
4284	CFGLDRQueryUInt32 (orderNode, "position", &position);
4285	-- position;
4286	Assert (position < ELEMENTS (mHWData->mBootOrder));
4287
4288	/* device (required) */
4289	Bstr device;
4290	CFGLDRQueryBSTR (orderNode, "device", device.asOutParam());
4291	if (device == L"None")
4292	mHWData->mBootOrder [position] = DeviceType_NoDevice;
4293	else if (device == L"Floppy")
4294	mHWData->mBootOrder [position] = DeviceType_FloppyDevice;
4295	else if (device == L"DVD")
4296	mHWData->mBootOrder [position] = DeviceType_DVDDevice;
4297	else if (device == L"HardDisk")
4298	mHWData->mBootOrder [position] = DeviceType_HardDiskDevice;
4299	else if (device == L"Network")
4300	mHWData->mBootOrder [position] = DeviceType_NetworkDevice;
4301	else
4302	ComAssertMsgFailed (("Invalid device: %ls\n", device.raw()));
4303
4304	CFGLDRReleaseNode (orderNode);
4305	}
4306
4307	CFGLDRReleaseNode (bootNode);
4308	if (FAILED (rc))
4309	return rc;
4310	}
4311
4312	/* Display node (required) */
4313	{
4314	CFGNODE displayNode = 0;
4315	CFGLDRGetChildNode (aNode, "Display", 0, &displayNode);
4316	ComAssertRet (displayNode, E_FAIL);
4317
4318	uint32_t VRAMSize;
4319	CFGLDRQueryUInt32 (displayNode, "VRAMSize", &VRAMSize);
4320	mHWData->mVRAMSize = VRAMSize;
4321
4322	uint32_t MonitorCount;
4323	CFGLDRQueryUInt32 (displayNode, "MonitorCount", &MonitorCount);
4324	mHWData->mMonitorCount = MonitorCount;
4325
4326	CFGLDRReleaseNode (displayNode);
4327	}
4328
4329	#ifdef VBOX_VRDP
4330	/* RemoteDisplay node (optional) */
4331	{
4332	CFGNODE remoteDisplayNode = 0;
4333	CFGLDRGetChildNode (aNode, "RemoteDisplay", 0, &remoteDisplayNode);
4334	if (remoteDisplayNode)
4335	{
4336	HRESULT rc = mVRDPServer->loadSettings (remoteDisplayNode);
4337	CFGLDRReleaseNode (remoteDisplayNode);
4338	CheckComRCReturnRC (rc);
4339	}
4340	}
4341	#endif
4342
4343	/* BIOS node (required) */
4344	{
4345	CFGNODE biosNode = 0;
4346	CFGLDRGetChildNode (aNode, "BIOS", 0, &biosNode);
4347	ComAssertRet (biosNode, E_FAIL);
4348
4349	HRESULT rc = S_OK;
4350
4351	do
4352	{
4353	/* ACPI */
4354	{
4355	CFGNODE acpiNode = 0;
4356	CFGLDRGetChildNode (biosNode, "ACPI", 0, &acpiNode);
4357	ComAssertBreak (acpiNode, rc = E_FAIL);
4358
4359	bool enabled;
4360	CFGLDRQueryBool (acpiNode, "enabled", &enabled);
4361	mBIOSSettings->COMSETTER(ACPIEnabled)(enabled);
4362	CFGLDRReleaseNode (acpiNode);
4363	}
4364
4365	/* IOAPIC */
4366	{
4367	CFGNODE ioapicNode = 0;
4368	CFGLDRGetChildNode (biosNode, "IOAPIC", 0, &ioapicNode);
4369	if (ioapicNode)
4370	{
4371	bool enabled;
4372	CFGLDRQueryBool (ioapicNode, "enabled", &enabled);
4373	mBIOSSettings->COMSETTER(IOAPICEnabled)(enabled);
4374	CFGLDRReleaseNode (ioapicNode);
4375	}
4376	}
4377
4378	/* Logo (optional) */
4379	{
4380	CFGNODE logoNode = 0;
4381	CFGLDRGetChildNode (biosNode, "Logo", 0, &logoNode);
4382	if (logoNode)
4383	{
4384	bool enabled = false;
4385	CFGLDRQueryBool (logoNode, "fadeIn", &enabled);
4386	mBIOSSettings->COMSETTER(LogoFadeIn)(enabled);
4387	CFGLDRQueryBool (logoNode, "fadeOut", &enabled);
4388	mBIOSSettings->COMSETTER(LogoFadeOut)(enabled);
4389
4390	uint32_t BIOSLogoDisplayTime;
4391	CFGLDRQueryUInt32 (logoNode, "displayTime", &BIOSLogoDisplayTime);
4392	mBIOSSettings->COMSETTER(LogoDisplayTime)(BIOSLogoDisplayTime);
4393
4394	Bstr logoPath;
4395	CFGLDRQueryBSTR (logoNode, "imagePath", logoPath.asOutParam());
4396	mBIOSSettings->COMSETTER(LogoImagePath)(logoPath);
4397
4398	CFGLDRReleaseNode (logoNode);
4399	}
4400	}
4401
4402	/* boot menu (optional) */
4403	{
4404	CFGNODE bootMenuNode = 0;
4405	CFGLDRGetChildNode (biosNode, "BootMenu", 0, &bootMenuNode);
4406	if (bootMenuNode)
4407	{
4408	Bstr modeStr;
4409	BIOSBootMenuMode_T mode;
4410	CFGLDRQueryBSTR (bootMenuNode, "mode", modeStr.asOutParam());
4411	if (modeStr == L"disabled")
4412	mode = BIOSBootMenuMode_Disabled;
4413	else if (modeStr == L"menuonly")
4414	mode = BIOSBootMenuMode_MenuOnly;
4415	else
4416	mode = BIOSBootMenuMode_MessageAndMenu;
4417	mBIOSSettings->COMSETTER(BootMenuMode)(mode);
4418
4419	CFGLDRReleaseNode (bootMenuNode);
4420	}
4421	}
4422
4423	/* PXE debug logging (optional) */
4424	{
4425	CFGNODE pxedebugNode = 0;
4426	CFGLDRGetChildNode (biosNode, "PXEDebug", 0, &pxedebugNode);
4427	if (pxedebugNode)
4428	{
4429	bool enabled;
4430	CFGLDRQueryBool (pxedebugNode, "enabled", &enabled);
4431	mBIOSSettings->COMSETTER(PXEDebugEnabled)(enabled);
4432	CFGLDRReleaseNode (pxedebugNode);
4433	}
4434	}
4435
4436	/* time offset (optional) */
4437	{
4438	CFGNODE timeOffsetNode = 0;
4439	CFGLDRGetChildNode (biosNode, "TimeOffset", 0, &timeOffsetNode);
4440	if (timeOffsetNode)
4441	{
4442	LONG64 timeOffset;
4443	CFGLDRQueryInt64 (timeOffsetNode, "value", &timeOffset);
4444	mBIOSSettings->COMSETTER(TimeOffset)(timeOffset);
4445	CFGLDRReleaseNode (timeOffsetNode);
4446	}
4447	}
4448
4449	/* IDE controller type (optional, defaults to PIIX3) */
4450	{
4451	CFGNODE ideControllerNode = 0;
4452	IDEControllerType_T controllerType = IDEControllerType_IDEControllerPIIX3;
4453	CFGLDRGetChildNode (biosNode, "IDEController", 0, &ideControllerNode);
4454	if (ideControllerNode)
4455	{
4456	Bstr IDEControllerType;
4457
4458	CFGLDRQueryBSTR (ideControllerNode, "type", IDEControllerType.asOutParam());
4459	ComAssertBreak (IDEControllerType, rc = E_FAIL);
4460
4461	if (IDEControllerType.compare(Bstr("PIIX3")) == 0)
4462	controllerType = IDEControllerType_IDEControllerPIIX3;
4463	else if (IDEControllerType.compare(Bstr("PIIX4")) == 0)
4464	controllerType = IDEControllerType_IDEControllerPIIX4;
4465	else
4466	ComAssertBreak (0, rc = E_FAIL);
4467
4468	CFGLDRReleaseNode (ideControllerNode);
4469	}
4470	mBIOSSettings->COMSETTER(IDEControllerType)(controllerType);
4471	}
4472
4473	}
4474	while (0);
4475
4476	CFGLDRReleaseNode (biosNode);
4477	if (FAILED (rc))
4478	return rc;
4479	}
4480
4481	/* DVD drive (contains either Image or HostDrive or nothing) */
4482	/// @todo (dmik) move the code to DVDDrive
4483	{
4484	HRESULT rc = S_OK;
4485
4486	CFGNODE dvdDriveNode = 0;
4487	CFGLDRGetChildNode (aNode, "DVDDrive", 0, &dvdDriveNode);
4488	ComAssertRet (dvdDriveNode, E_FAIL);
4489
4490	bool fPassthrough;
4491	CFGLDRQueryBool(dvdDriveNode, "passthrough", &fPassthrough);
4492	mDVDDrive->COMSETTER(Passthrough)(fPassthrough);
4493
4494	CFGNODE typeNode = 0;
4495
4496	do
4497	{
4498	CFGLDRGetChildNode (dvdDriveNode, "Image", 0, &typeNode);
4499	if (typeNode)
4500	{
4501	Guid uuid;
4502	CFGLDRQueryUUID (typeNode, "uuid", uuid.ptr());
4503	rc = mDVDDrive->MountImage (uuid);
4504	}
4505	else
4506	{
4507	CFGLDRGetChildNode (dvdDriveNode, "HostDrive", 0, &typeNode);
4508	if (typeNode)
4509	{
4510	Bstr src;
4511	CFGLDRQueryBSTR (typeNode, "src", src.asOutParam());
4512
4513	/* find the correspoding object */
4514	ComPtr <IHost> host;
4515	rc = mParent->COMGETTER(Host) (host.asOutParam());
4516	ComAssertComRCBreak (rc, rc = rc);
4517
4518	ComPtr <IHostDVDDriveCollection> coll;
4519	rc = host->COMGETTER(DVDDrives) (coll.asOutParam());
4520	ComAssertComRCBreak (rc, rc = rc);
4521
4522	ComPtr <IHostDVDDrive> drive;
4523	rc = coll->FindByName (src, drive.asOutParam());
4524	if (SUCCEEDED (rc))
4525	rc = mDVDDrive->CaptureHostDrive (drive);
4526	else if (rc == E_INVALIDARG)
4527	{
4528	/* the host DVD drive is not currently available. we
4529	* assume it will be available later and create an
4530	* extra object now */
4531	ComObjPtr <HostDVDDrive> hostDrive;
4532	hostDrive.createObject();
4533	rc = hostDrive->init (src);
4534	ComAssertComRCBreak (rc, rc = rc);
4535	rc = mDVDDrive->CaptureHostDrive (hostDrive);
4536	}
4537	else
4538	ComAssertComRCBreakRC (rc);
4539	}
4540	}
4541	}
4542	while (0);
4543
4544	if (typeNode)
4545	CFGLDRReleaseNode (typeNode);
4546	CFGLDRReleaseNode (dvdDriveNode);
4547
4548	if (FAILED (rc))
4549	return rc;
4550	}
4551
4552	/* Floppy drive (contains either Image or HostDrive or nothing) */
4553	/// @todo (dmik) move the code to FloppyDrive
4554	{
4555	HRESULT rc = S_OK;
4556
4557	CFGNODE driveNode = 0;
4558	CFGLDRGetChildNode (aNode, "FloppyDrive", 0, &driveNode);
4559	ComAssertRet (driveNode, E_FAIL);
4560
4561	BOOL fFloppyEnabled = TRUE;
4562	CFGLDRQueryBool (driveNode, "enabled", (bool*)&fFloppyEnabled);
4563	rc = mFloppyDrive->COMSETTER(Enabled)(fFloppyEnabled);
4564
4565	CFGNODE typeNode = 0;
4566	do
4567	{
4568	CFGLDRGetChildNode (driveNode, "Image", 0, &typeNode);
4569	if (typeNode)
4570	{
4571	Guid uuid;
4572	CFGLDRQueryUUID (typeNode, "uuid", uuid.ptr());
4573	rc = mFloppyDrive->MountImage (uuid);
4574	}
4575	else
4576	{
4577	CFGLDRGetChildNode (driveNode, "HostDrive", 0, &typeNode);
4578	if (typeNode)
4579	{
4580	Bstr src;
4581	CFGLDRQueryBSTR (typeNode, "src", src.asOutParam());
4582
4583	/* find the correspoding object */
4584	ComPtr <IHost> host;
4585	rc = mParent->COMGETTER(Host) (host.asOutParam());
4586	ComAssertComRCBreak (rc, rc = rc);
4587
4588	ComPtr <IHostFloppyDriveCollection> coll;
4589	rc = host->COMGETTER(FloppyDrives) (coll.asOutParam());
4590	ComAssertComRCBreak (rc, rc = rc);
4591
4592	ComPtr <IHostFloppyDrive> drive;
4593	rc = coll->FindByName (src, drive.asOutParam());
4594	if (SUCCEEDED (rc))
4595	rc = mFloppyDrive->CaptureHostDrive (drive);
4596	else if (rc == E_INVALIDARG)
4597	{
4598	/* the host Floppy drive is not currently available. we
4599	* assume it will be available later and create an
4600	* extra object now */
4601	ComObjPtr <HostFloppyDrive> hostDrive;
4602	hostDrive.createObject();
4603	rc = hostDrive->init (src);
4604	ComAssertComRCBreak (rc, rc = rc);
4605	rc = mFloppyDrive->CaptureHostDrive (hostDrive);
4606	}
4607	else
4608	ComAssertComRCBreakRC (rc);
4609	}
4610	}
4611	}
4612	while (0);
4613
4614	if (typeNode)
4615	CFGLDRReleaseNode (typeNode);
4616	CFGLDRReleaseNode (driveNode);
4617
4618	CheckComRCReturnRC (rc);
4619	}
4620
4621	/* USB Controller */
4622	{
4623	HRESULT rc = mUSBController->loadSettings (aNode);
4624	CheckComRCReturnRC (rc);
4625	}
4626
4627	/* Network node (required) */
4628	/// @todo (dmik) move the code to NetworkAdapter
4629	{
4630	/* we assume that all network adapters are initially disabled
4631	* and detached */
4632
4633	CFGNODE networkNode = 0;
4634	CFGLDRGetChildNode (aNode, "Network", 0, &networkNode);
4635	ComAssertRet (networkNode, E_FAIL);
4636
4637	HRESULT rc = S_OK;
4638
4639	unsigned cAdapters = 0;
4640	CFGLDRCountChildren (networkNode, "Adapter", &cAdapters);
4641	for (unsigned i = 0; i < cAdapters; i++)
4642	{
4643	CFGNODE adapterNode = 0;
4644	CFGLDRGetChildNode (networkNode, "Adapter", i, &adapterNode);
4645	ComAssertBreak (adapterNode, rc = E_FAIL);
4646
4647	/* slot number (required) */
4648	/* slot unicity is guaranteed by XML Schema */
4649	uint32_t slot = 0;
4650	CFGLDRQueryUInt32 (adapterNode, "slot", &slot);
4651	Assert (slot < ELEMENTS (mNetworkAdapters));
4652
4653	/* type */
4654	Bstr adapterType;
4655	CFGLDRQueryBSTR (adapterNode, "type", adapterType.asOutParam());
4656	ComAssertBreak (adapterType, rc = E_FAIL);
4657
4658	/* enabled (required) */
4659	bool enabled = false;
4660	CFGLDRQueryBool (adapterNode, "enabled", &enabled);
4661	/* MAC address (can be null) */
4662	Bstr macAddr;
4663	CFGLDRQueryBSTR (adapterNode, "MACAddress", macAddr.asOutParam());
4664	/* cable (required) */
4665	bool cableConnected;
4666	CFGLDRQueryBool (adapterNode, "cable", &cableConnected);
4667	/* line speed (defaults to 100 Mbps) */
4668	uint32_t lineSpeed = 100000;
4669	CFGLDRQueryUInt32 (adapterNode, "speed", &lineSpeed);
4670	/* tracing (defaults to false) */
4671	bool traceEnabled;
4672	CFGLDRQueryBool (adapterNode, "trace", &traceEnabled);
4673	Bstr traceFile;
4674	CFGLDRQueryBSTR (adapterNode, "tracefile", traceFile.asOutParam());
4675
4676	rc = mNetworkAdapters [slot]->COMSETTER(Enabled) (enabled);
4677	CheckComRCBreakRC (rc);
4678	rc = mNetworkAdapters [slot]->COMSETTER(MACAddress) (macAddr);
4679	CheckComRCBreakRC (rc);
4680	rc = mNetworkAdapters [slot]->COMSETTER(CableConnected) (cableConnected);
4681	CheckComRCBreakRC (rc);
4682	rc = mNetworkAdapters [slot]->COMSETTER(LineSpeed) (lineSpeed);
4683	CheckComRCBreakRC (rc);
4684	rc = mNetworkAdapters [slot]->COMSETTER(TraceEnabled) (traceEnabled);
4685	CheckComRCBreakRC (rc);
4686	rc = mNetworkAdapters [slot]->COMSETTER(TraceFile) (traceFile);
4687	CheckComRCBreakRC (rc);
4688
4689	if (adapterType.compare(Bstr("Am79C970A")) == 0)
4690	mNetworkAdapters [slot]->COMSETTER(AdapterType)(NetworkAdapterType_NetworkAdapterAm79C970A);
4691	else if (adapterType.compare(Bstr("Am79C973")) == 0)
4692	mNetworkAdapters [slot]->COMSETTER(AdapterType)(NetworkAdapterType_NetworkAdapterAm79C973);
4693	#ifdef VBOX_WITH_E1000
4694	else if (adapterType.compare(Bstr("82540EM")) == 0)
4695	mNetworkAdapters [slot]->COMSETTER(AdapterType)(NetworkAdapterType_NetworkAdapter82540EM);
4696	#endif
4697	else
4698	ComAssertBreak (0, rc = E_FAIL);
4699
4700	CFGNODE attachmentNode = 0;
4701	if (CFGLDRGetChildNode (adapterNode, "NAT", 0, &attachmentNode), attachmentNode)
4702	{
4703	rc = mNetworkAdapters [slot]->AttachToNAT();
4704	CheckComRCBreakRC (rc);
4705	}
4706	else
4707	if (CFGLDRGetChildNode (adapterNode, "HostInterface", 0, &attachmentNode), attachmentNode)
4708	{
4709	/* Host Interface Networking */
4710	Bstr name;
4711	CFGLDRQueryBSTR (attachmentNode, "name", name.asOutParam());
4712	#ifdef RT_OS_WINDOWS
4713	/* @name can be empty on Win32, but not null */
4714	ComAssertBreak (!name.isNull(), rc = E_FAIL);
4715	#endif
4716	rc = mNetworkAdapters [slot]->COMSETTER(HostInterface) (name);
4717	CheckComRCBreakRC (rc);
4718	#ifdef VBOX_WITH_UNIXY_TAP_NETWORKING
4719	Bstr tapSetupApp;
4720	CFGLDRQueryBSTR (attachmentNode, "TAPSetup", tapSetupApp.asOutParam());
4721	Bstr tapTerminateApp;
4722	CFGLDRQueryBSTR (attachmentNode, "TAPTerminate", tapTerminateApp.asOutParam());
4723
4724	rc = mNetworkAdapters [slot]->COMSETTER(TAPSetupApplication) (tapSetupApp);
4725	CheckComRCBreakRC (rc);
4726	rc = mNetworkAdapters [slot]->COMSETTER(TAPTerminateApplication) (tapTerminateApp);
4727	CheckComRCBreakRC (rc);
4728	#endif // VBOX_WITH_UNIXY_TAP_NETWORKING
4729	rc = mNetworkAdapters [slot]->AttachToHostInterface();
4730	CheckComRCBreakRC (rc);
4731	}
4732	else
4733	if (CFGLDRGetChildNode(adapterNode, "InternalNetwork", 0, &attachmentNode), attachmentNode)
4734	{
4735	/* Internal Networking */
4736	Bstr name;
4737	CFGLDRQueryBSTR (attachmentNode, "name", name.asOutParam());
4738	ComAssertBreak (!name.isNull(), rc = E_FAIL);
4739	rc = mNetworkAdapters[slot]->AttachToInternalNetwork();
4740	CheckComRCBreakRC (rc);
4741	rc = mNetworkAdapters[slot]->COMSETTER(InternalNetwork) (name);
4742	CheckComRCBreakRC (rc);
4743	}
4744	else
4745	{
4746	/* Adapter has no children */
4747	rc = mNetworkAdapters [slot]->Detach();
4748	CheckComRCBreakRC (rc);
4749	}
4750	if (attachmentNode)
4751	CFGLDRReleaseNode (attachmentNode);
4752
4753	CFGLDRReleaseNode (adapterNode);
4754	}
4755
4756	CFGLDRReleaseNode (networkNode);
4757	CheckComRCReturnRC (rc);
4758	}
4759
4760	/* Serial node (optional) */
4761	CFGNODE serialNode = 0;
4762	CFGLDRGetChildNode (aNode, "Uart", 0, &serialNode);
4763	if (serialNode)
4764	{
4765	HRESULT rc = S_OK;
4766	unsigned cPorts = 0;
4767	CFGLDRCountChildren (serialNode, "Port", &cPorts);
4768	for (unsigned slot = 0; slot < cPorts; slot++)
4769	{
4770	rc = mSerialPorts [slot]->loadSettings (serialNode, slot);
4771	CheckComRCBreakRC (rc);
4772	}
4773
4774	CFGLDRReleaseNode (serialNode);
4775	CheckComRCReturnRC (rc);
4776	}
4777
4778	/* Parallel node (optional) */
4779	CFGNODE parallelNode = 0;
4780	CFGLDRGetChildNode (aNode, "Lpt", 0, &parallelNode);
4781	if (parallelNode)
4782	{
4783	HRESULT rc = S_OK;
4784	unsigned cPorts = 0;
4785	CFGLDRCountChildren (parallelNode, "Port", &cPorts);
4786	for (unsigned slot = 0; slot < cPorts; slot++)
4787	{
4788	rc = mParallelPorts [slot]->loadSettings (parallelNode, slot);
4789	CheckComRCBreakRC (rc);
4790	}
4791
4792	CFGLDRReleaseNode (parallelNode);
4793	CheckComRCReturnRC (rc);
4794	}
4795
4796	/* AudioAdapter node (required) */
4797	/// @todo (dmik) move the code to AudioAdapter
4798	{
4799	CFGNODE audioAdapterNode = 0;
4800	CFGLDRGetChildNode (aNode, "AudioAdapter", 0, &audioAdapterNode);
4801	ComAssertRet (audioAdapterNode, E_FAIL);
4802
4803	/* is the adapter enabled? */
4804	bool enabled = false;
4805	CFGLDRQueryBool (audioAdapterNode, "enabled", &enabled);
4806	mAudioAdapter->COMSETTER(Enabled) (enabled);
4807	/* now check the audio driver */
4808	Bstr driver;
4809	CFGLDRQueryBSTR (audioAdapterNode, "driver", driver.asOutParam());
4810	AudioDriverType_T audioDriver;
4811	audioDriver = AudioDriverType_NullAudioDriver;
4812	if (driver == L"null")
4813	; /* Null has been set above */
4814	#ifdef RT_OS_WINDOWS
4815	else if (driver == L"winmm")
4816	#ifdef VBOX_WITH_WINMM
4817	audioDriver = AudioDriverType_WINMMAudioDriver;
4818	#else
4819	/* fall back to dsound */
4820	audioDriver = AudioDriverType_DSOUNDAudioDriver;
4821	#endif
4822	else if (driver == L"dsound")
4823	audioDriver = AudioDriverType_DSOUNDAudioDriver;
4824	#endif // RT_OS_WINDOWS
4825	#ifdef RT_OS_LINUX
4826	else if (driver == L"oss")
4827	audioDriver = AudioDriverType_OSSAudioDriver;
4828	else if (driver == L"alsa")
4829	#ifdef VBOX_WITH_ALSA
4830	audioDriver = AudioDriverType_ALSAAudioDriver;
4831	#else
4832	/* fall back to OSS */
4833	audioDriver = AudioDriverType_OSSAudioDriver;
4834	#endif
4835	#endif // RT_OS_LINUX
4836	#ifdef RT_OS_DARWIN
4837	else if (driver == L"coreaudio")
4838	audioDriver = AudioDriverType_CoreAudioDriver;
4839	#endif
4840	#ifdef RT_OS_OS2
4841	else if (driver == L"mmpm")
4842	audioDriver = AudioDriverType_MMPMAudioDriver;
4843	#endif
4844	else
4845	AssertMsgFailed (("Invalid driver: %ls\n", driver.raw()));
4846
4847	HRESULT rc = mAudioAdapter->COMSETTER(AudioDriver) (audioDriver);
4848
4849	CFGLDRReleaseNode (audioAdapterNode);
4850	CheckComRCReturnRC (rc);
4851	}
4852
4853	/* Shared folders (optional) */
4854	/// @todo (dmik) make required on next format change!
4855	do
4856	{
4857	CFGNODE sharedFoldersNode = 0;
4858	CFGLDRGetChildNode (aNode, "SharedFolders", 0, &sharedFoldersNode);
4859
4860	if (!sharedFoldersNode)
4861	break;
4862
4863	HRESULT rc = S_OK;
4864
4865	unsigned cFolders = 0;
4866	CFGLDRCountChildren (sharedFoldersNode, "SharedFolder", &cFolders);
4867
4868	for (unsigned i = 0; i < cFolders; i++)
4869	{
4870	CFGNODE folderNode = 0;
4871	CFGLDRGetChildNode (sharedFoldersNode, "SharedFolder", i, &folderNode);
4872	ComAssertBreak (folderNode, rc = E_FAIL);
4873
4874	// folder logical name (required)
4875	Bstr name;
4876	CFGLDRQueryBSTR (folderNode, "name", name.asOutParam());
4877
4878	// folder host path (required)
4879	Bstr hostPath;
4880	CFGLDRQueryBSTR (folderNode, "hostPath", hostPath.asOutParam());
4881
4882	rc = CreateSharedFolder (name, hostPath);
4883	CheckComRCBreakRC (rc);
4884
4885	CFGLDRReleaseNode (folderNode);
4886	}
4887
4888	CFGLDRReleaseNode (sharedFoldersNode);
4889	CheckComRCReturnRC (rc);
4890	}
4891	while (0);
4892
4893	/* Clipboard node (currently not required) */
4894	/// @todo (dmik) make required on next format change!
4895	{
4896	/* default value in case the node is not there */
4897	mHWData->mClipboardMode = ClipboardMode_ClipDisabled;
4898
4899	CFGNODE clipNode = 0;
4900	CFGLDRGetChildNode (aNode, "Clipboard", 0, &clipNode);
4901	if (clipNode)
4902	{
4903	Bstr mode;
4904	CFGLDRQueryBSTR (clipNode, "mode", mode.asOutParam());
4905	if (mode == L"Disabled")
4906	mHWData->mClipboardMode = ClipboardMode_ClipDisabled;
4907	else if (mode == L"HostToGuest")
4908	mHWData->mClipboardMode = ClipboardMode_ClipHostToGuest;
4909	else if (mode == L"GuestToHost")
4910	mHWData->mClipboardMode = ClipboardMode_ClipGuestToHost;
4911	else if (mode == L"Bidirectional")
4912	mHWData->mClipboardMode = ClipboardMode_ClipBidirectional;
4913	else
4914	AssertMsgFailed (("%ls clipboard mode is invalid\n", mode.raw()));
4915	CFGLDRReleaseNode (clipNode);
4916	}
4917	}
4918
4919	/* Guest node (optional) */
4920	/// @todo (dmik) make required on next format change!
4921	{
4922	CFGNODE guestNode = 0;
4923	CFGLDRGetChildNode (aNode, "Guest", 0, &guestNode);
4924	if (guestNode)
4925	{
4926	uint32_t memoryBalloonSize = 0;
4927	CFGLDRQueryUInt32 (guestNode, "MemoryBalloonSize",
4928	&memoryBalloonSize);
4929	mHWData->mMemoryBalloonSize = memoryBalloonSize;
4930
4931	uint32_t statisticsUpdateInterval = 0;
4932	CFGLDRQueryUInt32 (guestNode, "StatisticsUpdateInterval",
4933	&statisticsUpdateInterval);
4934	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
4935
4936	CFGLDRReleaseNode (guestNode);
4937	}
4938	}
4939
4940	return S_OK;
4941	}
4942
4943	/**
4944	* @param aNode <HardDiskAttachments> node
4945	* @param aRegistered true when the machine is being loaded on VirtualBox
4946	* startup, or when a snapshot is being loaded (wchich
4947	* currently can happen on startup only)
4948	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
4949	*/
4950	HRESULT Machine::loadHardDisks (CFGNODE aNode, bool aRegistered,
4951	const Guid aSnapshotId / = NULL */)
4952	{
4953	AssertReturn (aNode, E_INVALIDARG);
4954	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
4955	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
4956
4957	HRESULT rc = S_OK;
4958
4959	unsigned cbDisks = 0;
4960	CFGLDRCountChildren (aNode, "HardDiskAttachment", &cbDisks);
4961
4962	if (!aRegistered && cbDisks > 0)
4963	{
4964	/* when the machine is being loaded (opened) from a file, it cannot
4965	* have hard disks attached (this should not happen normally,
4966	* because we don't allow to attach hard disks to an unregistered
4967	* VM at all */
4968	return setError (E_FAIL,
4969	tr ("Unregistered machine '%ls' cannot have hard disks attached "
4970	"(found %d hard disk attachments)"),
4971	mUserData->mName.raw(), cbDisks);
4972	}
4973
4974	for (unsigned i = 0; i < cbDisks && SUCCEEDED (rc); ++ i)
4975	{
4976	CFGNODE hdNode;
4977	CFGLDRGetChildNode (aNode, "HardDiskAttachment", i, &hdNode);
4978	ComAssertRet (hdNode, E_FAIL);
4979
4980	do
4981	{
4982	/* hardDisk uuid (required) */
4983	Guid uuid;
4984	CFGLDRQueryUUID (hdNode, "hardDisk", uuid.ptr());
4985	/* bus (controller) type (required) */
4986	Bstr bus;
4987	CFGLDRQueryBSTR (hdNode, "bus", bus.asOutParam());
4988	/* device (required) */
4989	Bstr device;
4990	CFGLDRQueryBSTR (hdNode, "device", device.asOutParam());
4991
4992	/* find a hard disk by UUID */
4993	ComObjPtr <HardDisk> hd;
4994	rc = mParent->getHardDisk (uuid, hd);
4995	if (FAILED (rc))
4996	break;
4997
4998	AutoLock hdLock (hd);
4999
5000	if (!hd->machineId().isEmpty())
5001	{
5002	rc = setError (E_FAIL,
5003	tr ("Hard disk '%ls' with UUID {%s} is already "
5004	"attached to a machine with UUID {%s} (see '%ls')"),
5005	hd->toString().raw(), uuid.toString().raw(),
5006	hd->machineId().toString().raw(),
5007	mData->mConfigFileFull.raw());
5008	break;
5009	}
5010
5011	if (hd->type() == HardDiskType_ImmutableHardDisk)
5012	{
5013	rc = setError (E_FAIL,
5014	tr ("Immutable hard disk '%ls' with UUID {%s} cannot be "
5015	"directly attached to a machine (see '%ls')"),
5016	hd->toString().raw(), uuid.toString().raw(),
5017	mData->mConfigFileFull.raw());
5018	break;
5019	}
5020
5021	/* attach the device */
5022	DiskControllerType_T ctl = DiskControllerType_InvalidController;
5023	LONG dev = -1;
5024
5025	if (bus == L"ide0")
5026	{
5027	ctl = DiskControllerType_IDE0Controller;
5028	if (device == L"master")
5029	dev = 0;
5030	else if (device == L"slave")
5031	dev = 1;
5032	else
5033	ComAssertMsgFailedBreak (("Invalid device: %ls\n", device.raw()),
5034	rc = E_FAIL);
5035	}
5036	else if (bus == L"ide1")
5037	{
5038	ctl = DiskControllerType_IDE1Controller;
5039	if (device == L"master")
5040	rc = setError (E_FAIL, tr("Could not attach a disk as a master "
5041	"device on the secondary controller"));
5042	else if (device == L"slave")
5043	dev = 1;
5044	else
5045	ComAssertMsgFailedBreak (("Invalid device: %ls\n", device.raw()),
5046	rc = E_FAIL);
5047	}
5048	else
5049	ComAssertMsgFailedBreak (("Invalid bus: %ls\n", bus.raw()),
5050	rc = E_FAIL);
5051
5052	ComObjPtr <HardDiskAttachment> attachment;
5053	attachment.createObject();
5054	rc = attachment->init (hd, ctl, dev, false /* aDirty */);
5055	if (FAILED (rc))
5056	break;
5057
5058	/* associate the hard disk with this machine */
5059	hd->setMachineId (mData->mUuid);
5060
5061	/* associate the hard disk with the given snapshot ID */
5062	if (mType == IsSnapshotMachine)
5063	hd->setSnapshotId (*aSnapshotId);
5064
5065	mHDData->mHDAttachments.push_back (attachment);
5066	}
5067	while (0);
5068
5069	CFGLDRReleaseNode (hdNode);
5070	}
5071
5072	return rc;
5073	}
5074
5075	/**
5076	* Creates a config loader and loads the settings file.
5077	*
5078	* @param aIsNew \|true\| if a newly created settings file is to be opened
5079	* (must be the case only when called from #saveSettings())
5080	*
5081	* @note
5082	* XML Schema errors are not detected by this method because
5083	* it assumes that it will load settings from an exclusively locked
5084	* file (using a file handle) that was previously validated when opened
5085	* for the first time. Thus, this method should be used only when
5086	* it's necessary to modify (save) the settings file.
5087	*
5088	* @note The object must be locked at least for reading before calling
5089	* this method.
5090	*/
5091	HRESULT Machine::openConfigLoader (CFGHANDLE aLoader, bool aIsNew / = false */)
5092	{
5093	AssertReturn (aLoader, E_FAIL);
5094
5095	/* The settings file must be created and locked at this point */
5096	ComAssertRet (isConfigLocked(), E_FAIL);
5097
5098	/* load the config file */
5099	int vrc = CFGLDRLoad (aLoader,
5100	Utf8Str (mData->mConfigFileFull), mData->mHandleCfgFile,
5101	aIsNew ? NULL : XmlSchemaNS, true, cfgLdrEntityResolver,
5102	NULL);
5103	ComAssertRCRet (vrc, E_FAIL);
5104
5105	return S_OK;
5106	}
5107
5108	/**
5109	* Closes the config loader previously created by #openConfigLoader().
5110	* If \a aSaveBeforeClose is true, then the config is saved to the settings file
5111	* before closing. If saving fails, a proper error message is set.
5112	*
5113	* @param aSaveBeforeClose whether to save the config before closing or not
5114	*/
5115	HRESULT Machine::closeConfigLoader (CFGHANDLE aLoader, bool aSaveBeforeClose)
5116	{
5117	HRESULT rc = S_OK;
5118
5119	if (aSaveBeforeClose)
5120	{
5121	char *loaderError = NULL;
5122	int vrc = CFGLDRSave (aLoader, &loaderError);
5123	if (VBOX_FAILURE (vrc))
5124	{
5125	rc = setError (E_FAIL,
5126	tr ("Could not save the settings file '%ls' (%Vrc)%s%s"),
5127	mData->mConfigFileFull.raw(), vrc,
5128	loaderError ? ".\n" : "", loaderError ? loaderError : "");
5129	if (loaderError)
5130	RTMemTmpFree (loaderError);
5131	}
5132	}
5133
5134	CFGLDRFree (aLoader);
5135
5136	return rc;
5137	}
5138
5139	/**
5140	* Searches for a <Snapshot> node for the given snapshot.
5141	* If the search is successful, \a aSnapshotNode will contain the found node.
5142	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
5143	* direct child of \a aMachineNode.
5144	*
5145	* If the search fails, a failure is returned and both \a aSnapshotsNode and
5146	* \a aSnapshotNode are set to 0.
5147	*
5148	* @param aSnapshot snapshot to search for
5149	* @param aMachineNode <Machine> node to start from
5150	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
5151	* (may be NULL if the caller is not interested)
5152	* @param aSnapshotNode found <Snapshot> node
5153	*/
5154	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, CFGNODE aMachineNode,
5155	CFGNODE aSnapshotsNode, CFGNODE aSnapshotNode)
5156	{
5157	AssertReturn (aSnapshot && aMachineNode && aSnapshotNode, E_FAIL);
5158
5159	if (aSnapshotsNode)
5160	*aSnapshotsNode = 0;
5161	*aSnapshotNode = 0;
5162
5163	// build the full uuid path (from the fist parent to the given snapshot)
5164	std::list <Guid> path;
5165	{
5166	ComObjPtr <Snapshot> parent = aSnapshot;
5167	while (parent)
5168	{
5169	path.push_front (parent->data().mId);
5170	parent = parent->parent();
5171	}
5172	}
5173
5174	CFGNODE snapshotsNode = aMachineNode;
5175	CFGNODE snapshotNode = 0;
5176
5177	for (std::list <Guid>::const_iterator it = path.begin();
5178	it != path.end();
5179	++ it)
5180	{
5181	if (snapshotNode)
5182	{
5183	// proceed to the nested <Snapshots> node
5184	Assert (snapshotsNode);
5185	if (snapshotsNode != aMachineNode)
5186	{
5187	CFGLDRReleaseNode (snapshotsNode);
5188	snapshotsNode = 0;
5189	}
5190	CFGLDRGetChildNode (snapshotNode, "Snapshots", 0, &snapshotsNode);
5191	CFGLDRReleaseNode (snapshotNode);
5192	snapshotNode = 0;
5193	}
5194
5195	AssertReturn (snapshotsNode, E_FAIL);
5196
5197	unsigned count = 0, i = 0;
5198	CFGLDRCountChildren (snapshotsNode, "Snapshot", &count);
5199	for (; i < count; ++ i)
5200	{
5201	snapshotNode = 0;
5202	CFGLDRGetChildNode (snapshotsNode, "Snapshot", i, &snapshotNode);
5203	Guid id;
5204	CFGLDRQueryUUID (snapshotNode, "uuid", id.ptr());
5205	if (id == (*it))
5206	{
5207	// we keep (don't release) snapshotNode and snapshotsNode
5208	break;
5209	}
5210	CFGLDRReleaseNode (snapshotNode);
5211	snapshotNode = 0;
5212	}
5213
5214	if (i == count)
5215	{
5216	// the next uuid is not found, no need to continue...
5217	AssertFailed();
5218	if (snapshotsNode != aMachineNode)
5219	{
5220	CFGLDRReleaseNode (snapshotsNode);
5221	snapshotsNode = 0;
5222	}
5223	break;
5224	}
5225	}
5226
5227	// we must always succesfully find the node
5228	AssertReturn (snapshotNode, E_FAIL);
5229	AssertReturn (snapshotsNode, E_FAIL);
5230
5231	if (aSnapshotsNode)
5232	*aSnapshotsNode = snapshotsNode != aMachineNode ? snapshotsNode : 0;
5233	*aSnapshotNode = snapshotNode;
5234
5235	return S_OK;
5236	}
5237
5238	/**
5239	* Returns the snapshot with the given UUID or fails of no such snapshot.
5240	*
5241	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5242	* @param aSnapshot where to return the found snapshot
5243	* @param aSetError true to set extended error info on failure
5244	*/
5245	HRESULT Machine::findSnapshot (const Guid &aId, ComObjPtr <Snapshot> &aSnapshot,
5246	bool aSetError /* = false */)
5247	{
5248	if (!mData->mFirstSnapshot)
5249	{
5250	if (aSetError)
5251	return setError (E_FAIL,
5252	tr ("This machine does not have any snapshots"));
5253	return E_FAIL;
5254	}
5255
5256	if (aId.isEmpty())
5257	aSnapshot = mData->mFirstSnapshot;
5258	else
5259	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
5260
5261	if (!aSnapshot)
5262	{
5263	if (aSetError)
5264	return setError (E_FAIL,
5265	tr ("Could not find a snapshot with UUID {%s}"),
5266	aId.toString().raw());
5267	return E_FAIL;
5268	}
5269
5270	return S_OK;
5271	}
5272
5273	/**
5274	* Returns the snapshot with the given name or fails of no such snapshot.
5275	*
5276	* @param aName snapshot name to find
5277	* @param aSnapshot where to return the found snapshot
5278	* @param aSetError true to set extended error info on failure
5279	*/
5280	HRESULT Machine::findSnapshot (const BSTR aName, ComObjPtr <Snapshot> &aSnapshot,
5281	bool aSetError /* = false */)
5282	{
5283	AssertReturn (aName, E_INVALIDARG);
5284
5285	if (!mData->mFirstSnapshot)
5286	{
5287	if (aSetError)
5288	return setError (E_FAIL,
5289	tr ("This machine does not have any snapshots"));
5290	return E_FAIL;
5291	}
5292
5293	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5294
5295	if (!aSnapshot)
5296	{
5297	if (aSetError)
5298	return setError (E_FAIL,
5299	tr ("Could not find a snapshot named '%ls'"), aName);
5300	return E_FAIL;
5301	}
5302
5303	return S_OK;
5304	}
5305
5306	/**
5307	* Searches for an attachment that contains the given hard disk.
5308	* The hard disk must be associated with some VM and can be optionally
5309	* associated with some snapshot. If the attachment is stored in the snapshot
5310	* (i.e. the hard disk is associated with some snapshot), @a aSnapshot
5311	* will point to a non-null object on output.
5312	*
5313	* @param aHd hard disk to search an attachment for
5314	* @param aMachine where to store the hard disk's machine (can be NULL)
5315	* @param aSnapshot where to store the hard disk's snapshot (can be NULL)
5316	* @param aHda where to store the hard disk's attachment (can be NULL)
5317	*
5318	*
5319	* @note
5320	* It is assumed that the machine where the attachment is found,
5321	* is already placed to the Discarding state, when this method is called.
5322	* @note
5323	* The object returned in @a aHda is the attachment from the snapshot
5324	* machine if the hard disk is associated with the snapshot, not from the
5325	* primary machine object returned returned in @a aMachine.
5326	*/
5327	HRESULT Machine::findHardDiskAttachment (const ComObjPtr <HardDisk> &aHd,
5328	ComObjPtr <Machine> *aMachine,
5329	ComObjPtr <Snapshot> *aSnapshot,
5330	ComObjPtr <HardDiskAttachment> *aHda)
5331	{
5332	AssertReturn (!aHd.isNull(), E_INVALIDARG);
5333
5334	Guid mid = aHd->machineId();
5335	Guid sid = aHd->snapshotId();
5336
5337	AssertReturn (!mid.isEmpty(), E_INVALIDARG);
5338
5339	ComObjPtr <Machine> m;
5340	mParent->getMachine (mid, m);
5341	ComAssertRet (!m.isNull(), E_FAIL);
5342
5343	HDData::HDAttachmentList *attachments = &m->mHDData->mHDAttachments;
5344
5345	ComObjPtr <Snapshot> s;
5346	if (!sid.isEmpty())
5347	{
5348	m->findSnapshot (sid, s);
5349	ComAssertRet (!s.isNull(), E_FAIL);
5350	attachments = &s->data().mMachine->mHDData->mHDAttachments;
5351	}
5352
5353	AssertReturn (attachments, E_FAIL);
5354
5355	for (HDData::HDAttachmentList::const_iterator it = attachments->begin();
5356	it != attachments->end();
5357	++ it)
5358	{
5359	if ((*it)->hardDisk() == aHd)
5360	{
5361	if (aMachine) *aMachine = m;
5362	if (aSnapshot) *aSnapshot = s;
5363	if (aHda) aHda = (it);
5364	return S_OK;
5365	}
5366	}
5367
5368	ComAssertFailed();
5369	return E_FAIL;
5370	}
5371
5372	/**
5373	* Helper for #saveSettings. Cares about renaming the settings directory and
5374	* file if the machine name was changed and about creating a new settings file
5375	* if this is a new machine.
5376	*
5377	* @note Must be never called directly.
5378	*
5379	* @param aRenamed receives \|true\| if the name was changed and the settings
5380	* file was renamed as a result, or \|false\| otherwise. The
5381	* value makes sense only on success.
5382	* @param aNew receives \|true\| if a virgin settings file was created.
5383	*/
5384	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
5385	{
5386	HRESULT rc = S_OK;
5387
5388	aRenamed = false;
5389
5390	/* if we're ready and isConfigLocked() is FALSE then it means
5391	* that no config file exists yet (we will create a virgin one) */
5392	aNew = !isConfigLocked();
5393
5394	/* attempt to rename the settings file if machine name is changed */
5395	if (mUserData->mNameSync &&
5396	mUserData.isBackedUp() &&
5397	mUserData.backedUpData()->mName != mUserData->mName)
5398	{
5399	aRenamed = true;
5400
5401	if (!aNew)
5402	{
5403	/* unlock the old config file */
5404	rc = unlockConfig();
5405	CheckComRCReturnRC (rc);
5406	}
5407
5408	bool dirRenamed = false;
5409	bool fileRenamed = false;
5410
5411	Utf8Str configFile, newConfigFile;
5412	Utf8Str configDir, newConfigDir;
5413
5414	do
5415	{
5416	int vrc = VINF_SUCCESS;
5417
5418	Utf8Str name = mUserData.backedUpData()->mName;
5419	Utf8Str newName = mUserData->mName;
5420
5421	configFile = mData->mConfigFileFull;
5422
5423	/* first, rename the directory if it matches the machine name */
5424	configDir = configFile;
5425	RTPathStripFilename (configDir.mutableRaw());
5426	newConfigDir = configDir;
5427	if (RTPathFilename (configDir) == name)
5428	{
5429	RTPathStripFilename (newConfigDir.mutableRaw());
5430	newConfigDir = Utf8StrFmt ("%s%c%s",
5431	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5432	/* new dir and old dir cannot be equal here because of 'if'
5433	* above and because name != newName */
5434	Assert (configDir != newConfigDir);
5435	if (!aNew)
5436	{
5437	/* perform real rename only if the machine is not new */
5438	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5439	if (VBOX_FAILURE (vrc))
5440	{
5441	rc = setError (E_FAIL,
5442	tr ("Could not rename the directory '%s' to '%s' "
5443	"to save the settings file (%Vrc)"),
5444	configDir.raw(), newConfigDir.raw(), vrc);
5445	break;
5446	}
5447	dirRenamed = true;
5448	}
5449	}
5450
5451	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
5452	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5453
5454	/* then try to rename the settings file itself */
5455	if (newConfigFile != configFile)
5456	{
5457	/* get the path to old settings file in renamed directory */
5458	configFile = Utf8StrFmt ("%s%c%s",
5459	newConfigDir.raw(), RTPATH_DELIMITER,
5460	RTPathFilename (configFile));
5461	if (!aNew)
5462	{
5463	/* perform real rename only if the machine is not new */
5464	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
5465	if (VBOX_FAILURE (vrc))
5466	{
5467	rc = setError (E_FAIL,
5468	tr ("Could not rename the settings file '%s' to '%s' "
5469	"(%Vrc)"),
5470	configFile.raw(), newConfigFile.raw(), vrc);
5471	break;
5472	}
5473	fileRenamed = true;
5474	}
5475	}
5476
5477	/* update mConfigFileFull amd mConfigFile */
5478	Bstr oldConfigFileFull = mData->mConfigFileFull;
5479	Bstr oldConfigFile = mData->mConfigFile;
5480	mData->mConfigFileFull = newConfigFile;
5481	/* try to get the relative path for mConfigFile */
5482	Utf8Str path = newConfigFile;
5483	mParent->calculateRelativePath (path, path);
5484	mData->mConfigFile = path;
5485
5486	/* last, try to update the global settings with the new path */
5487	if (mData->mRegistered)
5488	{
5489	rc = mParent->updateSettings (configDir, newConfigDir);
5490	if (FAILED (rc))
5491	{
5492	/* revert to old values */
5493	mData->mConfigFileFull = oldConfigFileFull;
5494	mData->mConfigFile = oldConfigFile;
5495	break;
5496	}
5497	}
5498
5499	/* update the snapshot folder */
5500	path = mUserData->mSnapshotFolderFull;
5501	if (RTPathStartsWith (path, configDir))
5502	{
5503	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
5504	path.raw() + configDir.length());
5505	mUserData->mSnapshotFolderFull = path;
5506	calculateRelativePath (path, path);
5507	mUserData->mSnapshotFolder = path;
5508	}
5509
5510	/* update the saved state file path */
5511	path = mSSData->mStateFilePath;
5512	if (RTPathStartsWith (path, configDir))
5513	{
5514	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
5515	path.raw() + configDir.length());
5516	mSSData->mStateFilePath = path;
5517	}
5518
5519	/* Update saved state file paths of all online snapshots.
5520	* Note that saveSettings() will recognize name change
5521	* and will save all snapshots in this case. */
5522	if (mData->mFirstSnapshot)
5523	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
5524	newConfigDir);
5525	}
5526	while (0);
5527
5528	if (FAILED (rc))
5529	{
5530	/* silently try to rename everything back */
5531	if (fileRenamed)
5532	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
5533	if (dirRenamed)
5534	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
5535	}
5536
5537	if (!aNew)
5538	{
5539	/* lock the config again */
5540	HRESULT rc2 = lockConfig();
5541	if (SUCCEEDED (rc))
5542	rc = rc2;
5543	}
5544
5545	CheckComRCReturnRC (rc);
5546	}
5547
5548	if (aNew)
5549	{
5550	/* create a virgin config file */
5551	int vrc = VINF_SUCCESS;
5552
5553	/* ensure the settings directory exists */
5554	Utf8Str path = mData->mConfigFileFull;
5555	RTPathStripFilename (path.mutableRaw());
5556	if (!RTDirExists (path))
5557	{
5558	vrc = RTDirCreateFullPath (path, 0777);
5559	if (VBOX_FAILURE (vrc))
5560	{
5561	return setError (E_FAIL,
5562	tr ("Could not create a directory '%s' "
5563	"to save the settings file (%Vrc)"),
5564	path.raw(), vrc);
5565	}
5566	}
5567
5568	/* Note: open flags must correlated with RTFileOpen() in lockConfig() */
5569	path = Utf8Str (mData->mConfigFileFull);
5570	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
5571	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
5572	RTFILE_O_DENY_WRITE);
5573	if (VBOX_SUCCESS (vrc))
5574	{
5575	vrc = RTFileWrite (mData->mHandleCfgFile,
5576	(void *) DefaultMachineConfig,
5577	sizeof (DefaultMachineConfig), NULL);
5578	}
5579	if (VBOX_FAILURE (vrc))
5580	{
5581	mData->mHandleCfgFile = NIL_RTFILE;
5582	return setError (E_FAIL,
5583	tr ("Could not create the settings file '%s' (%Vrc)"),
5584	path.raw(), vrc);
5585	}
5586	/* we do not close the file to simulate lockConfig() */
5587	}
5588
5589	return rc;
5590	}
5591
5592	/**
5593	* Saves machine data, user data and hardware data.
5594	*
5595	* @param aMarkCurStateAsModified
5596	* if true (default), mData->mCurrentStateModified will be set to
5597	* what #isReallyModified() returns prior to saving settings to a file,
5598	* otherwise the current value of mData->mCurrentStateModified will be
5599	* saved.
5600	* @param aInformCallbacksAnyway
5601	* if true, callbacks will be informed even if #isReallyModified()
5602	* returns false. This is necessary for cases when we change machine data
5603	* diectly, not through the backup()/commit() mechanism.
5604	*
5605	* @note Locks mParent (only in some cases, and only when #isConfigLocked() is
5606	* \|TRUE\|, see the #prepareSaveSettings() code for details) +
5607	* this object + children for writing.
5608	*/
5609	HRESULT Machine::saveSettings (bool aMarkCurStateAsModified /* = true */,
5610	bool aInformCallbacksAnyway /* = false */)
5611	{
5612	LogFlowThisFuncEnter();
5613
5614	/// @todo (dmik) I guess we should lock all our child objects here
5615	// (such as mVRDPServer etc.) to ensure they are not changed
5616	// until completely saved to disk and committed
5617
5618	/// @todo (dmik) also, we need to delegate saving child objects' settings
5619	// to objects themselves to ensure operations 'commit + save changes'
5620	// are atomic (amd done from the object's lock so that nobody can change
5621	// settings again until completely saved).
5622
5623	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5624
5625	bool wasModified;
5626
5627	if (aMarkCurStateAsModified)
5628	{
5629	/*
5630	* We ignore changes to user data when setting mCurrentStateModified
5631	* because the current state will not differ from the current snapshot
5632	* if only user data has been changed (user data is shared by all
5633	* snapshots).
5634	*/
5635	mData->mCurrentStateModified = isReallyModified (true /* aIgnoreUserData */);
5636	wasModified = mUserData.hasActualChanges() \|\| mData->mCurrentStateModified;
5637	}
5638	else
5639	{
5640	wasModified = isReallyModified();
5641	}
5642
5643	HRESULT rc = S_OK;
5644
5645	/* First, prepare to save settings. It will will care about renaming the
5646	* settings directory and file if the machine name was changed and about
5647	* creating a new settings file if this is a new machine. */
5648	bool isRenamed = false;
5649	bool isNew = false;
5650	rc = prepareSaveSettings (isRenamed, isNew);
5651	CheckComRCReturnRC (rc);
5652
5653	/* then, open the settings file */
5654	CFGHANDLE configLoader = 0;
5655	rc = openConfigLoader (&configLoader, isNew);
5656	CheckComRCReturnRC (rc);
5657
5658	/* save all snapshots when the machine name was changed since
5659	* it may affect saved state file paths for online snapshots (see
5660	* #openConfigLoader() for details) */
5661	bool updateAllSnapshots = isRenamed;
5662
5663	/* commit before saving, since it may change settings
5664	* (for example, perform fixup of lazy hard disk changes) */
5665	rc = commit();
5666	if (FAILED (rc))
5667	{
5668	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
5669	return rc;
5670	}
5671
5672	/* include hard disk changes to the modified flag */
5673	wasModified \|= mHDData->mHDAttachmentsChanged;
5674	if (aMarkCurStateAsModified)
5675	mData->mCurrentStateModified \|= BOOL (mHDData->mHDAttachmentsChanged);
5676
5677
5678	CFGNODE machineNode = 0;
5679	/* create if not exists */
5680	CFGLDRCreateNode (configLoader, "VirtualBox/Machine", &machineNode);
5681
5682	do
5683	{
5684	ComAssertBreak (machineNode, rc = E_FAIL);
5685
5686	/* uuid (required) */
5687	Assert (mData->mUuid);
5688	CFGLDRSetUUID (machineNode, "uuid", mData->mUuid.raw());
5689
5690	/* name (required) */
5691	Assert (!mUserData->mName.isEmpty());
5692	CFGLDRSetBSTR (machineNode, "name", mUserData->mName);
5693
5694	/* nameSync (optional, default is true) */
5695	if (!mUserData->mNameSync)
5696	CFGLDRSetBool (machineNode, "nameSync", false);
5697	else
5698	CFGLDRDeleteAttribute (machineNode, "nameSync");
5699
5700	/* Description node (optional) */
5701	if (!mUserData->mDescription.isNull())
5702	{
5703	CFGNODE descNode = 0;
5704	CFGLDRCreateChildNode (machineNode, "Description", &descNode);
5705	Assert (descNode);
5706	CFGLDRSetBSTR (descNode, NULL, mUserData->mDescription);
5707	CFGLDRReleaseNode (descNode);
5708	}
5709	else
5710	{
5711	CFGNODE descNode = 0;
5712	CFGLDRGetChildNode (machineNode, "Description", 0, &descNode);
5713	if (descNode)
5714	CFGLDRDeleteNode (descNode);
5715	}
5716
5717	/* OSType (required) */
5718	{
5719	CFGLDRSetBSTR (machineNode, "OSType", mUserData->mOSTypeId);
5720	}
5721
5722	/* stateFile (optional) */
5723	if (mData->mMachineState == MachineState_Saved)
5724	{
5725	Assert (!mSSData->mStateFilePath.isEmpty());
5726	/* try to make the file name relative to the settings file dir */
5727	Utf8Str stateFilePath = mSSData->mStateFilePath;
5728	calculateRelativePath (stateFilePath, stateFilePath);
5729	CFGLDRSetString (machineNode, "stateFile", stateFilePath);
5730	}
5731	else
5732	{
5733	Assert (mSSData->mStateFilePath.isNull());
5734	CFGLDRDeleteAttribute (machineNode, "stateFile");
5735	}
5736
5737	/* currentSnapshot ID (optional) */
5738	if (!mData->mCurrentSnapshot.isNull())
5739	{
5740	Assert (!mData->mFirstSnapshot.isNull());
5741	CFGLDRSetUUID (machineNode, "currentSnapshot",
5742	mData->mCurrentSnapshot->data().mId);
5743	}
5744	else
5745	{
5746	Assert (mData->mFirstSnapshot.isNull());
5747	CFGLDRDeleteAttribute (machineNode, "currentSnapshot");
5748	}
5749
5750	/* snapshotFolder (optional) */
5751	if (!mUserData->mSnapshotFolder.isEmpty())
5752	CFGLDRSetBSTR (machineNode, "snapshotFolder", mUserData->mSnapshotFolder);
5753	else
5754	CFGLDRDeleteAttribute (machineNode, "snapshotFolder");
5755
5756	/* currentStateModified (optional, default is yes) */
5757	if (!mData->mCurrentStateModified)
5758	CFGLDRSetBool (machineNode, "currentStateModified", false);
5759	else
5760	CFGLDRDeleteAttribute (machineNode, "currentStateModified");
5761
5762	/* lastStateChange */
5763	CFGLDRSetDateTime (machineNode, "lastStateChange",
5764	mData->mLastStateChange);
5765
5766	/* Hardware node (required) */
5767	{
5768	CFGNODE hwNode = 0;
5769	CFGLDRGetChildNode (machineNode, "Hardware", 0, &hwNode);
5770	/* first, delete the entire node if exists */
5771	if (hwNode)
5772	CFGLDRDeleteNode (hwNode);
5773	/* then recreate it */
5774	hwNode = 0;
5775	CFGLDRCreateChildNode (machineNode, "Hardware", &hwNode);
5776	ComAssertBreak (hwNode, rc = E_FAIL);
5777
5778	rc = saveHardware (hwNode);
5779
5780	CFGLDRReleaseNode (hwNode);
5781	if (FAILED (rc))
5782	break;
5783	}
5784
5785	/* HardDiskAttachments node (required) */
5786	{
5787	CFGNODE hdasNode = 0;
5788	CFGLDRGetChildNode (machineNode, "HardDiskAttachments", 0, &hdasNode);
5789	/* first, delete the entire node if exists */
5790	if (hdasNode)
5791	CFGLDRDeleteNode (hdasNode);
5792	/* then recreate it */
5793	hdasNode = 0;
5794	CFGLDRCreateChildNode (machineNode, "HardDiskAttachments", &hdasNode);
5795	ComAssertBreak (hdasNode, rc = E_FAIL);
5796
5797	rc = saveHardDisks (hdasNode);
5798
5799	CFGLDRReleaseNode (hdasNode);
5800	if (FAILED (rc))
5801	break;
5802	}
5803
5804	/* update all snapshots if requested */
5805	if (updateAllSnapshots)
5806	rc = saveSnapshotSettingsWorker (machineNode, NULL,
5807	SaveSS_UpdateAllOp);
5808	}
5809	while (0);
5810
5811	if (machineNode)
5812	CFGLDRReleaseNode (machineNode);
5813
5814	if (SUCCEEDED (rc))
5815	rc = closeConfigLoader (configLoader, true /* aSaveBeforeClose */);
5816	else
5817	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
5818
5819	if (FAILED (rc))
5820	{
5821	/*
5822	* backup arbitrary data item to cause #isModified() to still return
5823	* true in case of any error
5824	*/
5825	mHWData.backup();
5826	}
5827
5828	if (wasModified \|\| aInformCallbacksAnyway)
5829	{
5830	/*
5831	* Fire the data change event, even on failure (since we've already
5832	* committed all data). This is done only for SessionMachines because
5833	* mutable Machine instances are always not registered (i.e. private
5834	* to the client process that creates them) and thus don't need to
5835	* inform callbacks.
5836	*/
5837	if (mType == IsSessionMachine)
5838	mParent->onMachineDataChange (mData->mUuid);
5839	}
5840
5841	LogFlowThisFunc (("rc=%08X\n", rc));
5842	LogFlowThisFuncLeave();
5843	return rc;
5844	}
5845
5846	/**
5847	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
5848	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
5849	* for more details.
5850	*
5851	* @param aSnapshot Snapshot to operate on
5852	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
5853	* or SaveSS_UpdateAttrsOp possibly combined with
5854	* SaveSS_UpdateCurrentId.
5855	*
5856	* @note Locks this object for writing + other child objects.
5857	*/
5858	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
5859	{
5860	AutoCaller autoCaller (this);
5861	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
5862
5863	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5864
5865	AutoLock alock (this);
5866
5867	AssertReturn (isConfigLocked(), E_FAIL);
5868
5869	HRESULT rc = S_OK;
5870
5871	/* load the config file */
5872	CFGHANDLE configLoader = 0;
5873	rc = openConfigLoader (&configLoader);
5874	if (FAILED (rc))
5875	return rc;
5876
5877	CFGNODE machineNode = 0;
5878	CFGLDRGetNode (configLoader, "VirtualBox/Machine", 0, &machineNode);
5879
5880	do
5881	{
5882	ComAssertBreak (machineNode, rc = E_FAIL);
5883
5884	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
5885
5886	CFGLDRReleaseNode (machineNode);
5887	}
5888	while (0);
5889
5890	if (SUCCEEDED (rc))
5891	rc = closeConfigLoader (configLoader, true /* aSaveBeforeClose */);
5892	else
5893	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
5894
5895	return rc;
5896	}
5897
5898	/**
5899	* Performs the specified operation on the given snapshot
5900	* in the settings file represented by \a aMachineNode.
5901	*
5902	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
5903	* that the whole tree of the snapshots should be updated in <Machine>.
5904	* One particular case is when the last (and the only) snapshot should be
5905	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
5906	*
5907	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
5908	* attribute of <Machine> needs to be updated.
5909	*
5910	* @param aMachineNode <Machine> node in the opened settings file
5911	* @param aSnapshot Snapshot to operate on
5912	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
5913	* or SaveSS_UpdateAttrsOp possibly combined with
5914	* SaveSS_UpdateCurrentId.
5915	*
5916	* @note Must be called with this object locked for writing.
5917	* Locks child objects.
5918	*/
5919	HRESULT Machine::saveSnapshotSettingsWorker (CFGNODE aMachineNode,
5920	Snapshot *aSnapshot, int aOpFlags)
5921	{
5922	AssertReturn (aMachineNode, E_FAIL);
5923
5924	AssertReturn (isLockedOnCurrentThread(), E_FAIL);
5925
5926	int op = aOpFlags & SaveSS_OpMask;
5927	AssertReturn (
5928	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
5929	op == SaveSS_UpdateAllOp)) \|\|
5930	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_UpdateCurrentId)) \|\|
5931	op == SaveSS_UpdateAllOp)),
5932	E_FAIL);
5933
5934	HRESULT rc = S_OK;
5935
5936	bool recreateWholeTree = false;
5937
5938	do
5939	{
5940	if (op == SaveSS_NoOp)
5941	break;
5942
5943	/* quick path: recreate the whole tree of the snapshots */
5944	if (op == SaveSS_UpdateAllOp && !aSnapshot)
5945	{
5946	/* first, delete the entire root snapshot node if it exists */
5947	CFGNODE snapshotNode = 0;
5948	CFGLDRGetChildNode (aMachineNode, "Snapshot", 0, &snapshotNode);
5949	if (snapshotNode)
5950	CFGLDRDeleteNode (snapshotNode);
5951
5952	/*
5953	* second, if we have any snapshots left, substitute aSnapshot with
5954	* the first snapshot to recreate the whole tree, otherwise break
5955	*/
5956	if (mData->mFirstSnapshot)
5957	{
5958	aSnapshot = mData->mFirstSnapshot;
5959	recreateWholeTree = true;
5960	}
5961	else
5962	break;
5963	}
5964
5965	Assert (!!aSnapshot);
5966	ComObjPtr <Snapshot> parent = aSnapshot->parent();
5967
5968	if (op == SaveSS_AddOp)
5969	{
5970	CFGNODE parentNode = 0;
5971
5972	if (parent)
5973	{
5974	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
5975	if (FAILED (rc))
5976	break;
5977	ComAssertBreak (parentNode, rc = E_FAIL);
5978	}
5979
5980	do
5981	{
5982	CFGNODE snapshotsNode = 0;
5983
5984	if (parentNode)
5985	{
5986	CFGLDRCreateChildNode (parentNode, "Snapshots", &snapshotsNode);
5987	ComAssertBreak (snapshotsNode, rc = E_FAIL);
5988	}
5989	else
5990	snapshotsNode = aMachineNode;
5991	do
5992	{
5993	CFGNODE snapshotNode = 0;
5994	CFGLDRAppendChildNode (snapshotsNode, "Snapshot", &snapshotNode);
5995	ComAssertBreak (snapshotNode, rc = E_FAIL);
5996	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
5997	CFGLDRReleaseNode (snapshotNode);
5998
5999	if (FAILED (rc))
6000	break;
6001
6002	/*
6003	* when a new snapshot is added, this means diffs were created
6004	* for every normal/immutable hard disk of the VM, so we need to
6005	* save the current hard disk attachments
6006	*/
6007
6008	CFGNODE hdasNode = 0;
6009	CFGLDRGetChildNode (aMachineNode, "HardDiskAttachments", 0, &hdasNode);
6010	if (hdasNode)
6011	CFGLDRDeleteNode (hdasNode);
6012	CFGLDRCreateChildNode (aMachineNode, "HardDiskAttachments", &hdasNode);
6013	ComAssertBreak (hdasNode, rc = E_FAIL);
6014
6015	rc = saveHardDisks (hdasNode);
6016
6017	if (mHDData->mHDAttachments.size() != 0)
6018	{
6019	/*
6020	* If we have one or more attachments then we definitely
6021	* created diffs for them and associated new diffs with
6022	* current settngs. So, since we don't use saveSettings(),
6023	* we need to inform callbacks manually.
6024	*/
6025	if (mType == IsSessionMachine)
6026	mParent->onMachineDataChange (mData->mUuid);
6027	}
6028
6029	CFGLDRReleaseNode (hdasNode);
6030	}
6031	while (0);
6032
6033	if (snapshotsNode != aMachineNode)
6034	CFGLDRReleaseNode (snapshotsNode);
6035	}
6036	while (0);
6037
6038	if (parentNode)
6039	CFGLDRReleaseNode (parentNode);
6040
6041	break;
6042	}
6043
6044	Assert (op == SaveSS_UpdateAttrsOp && !recreateWholeTree \|\|
6045	op == SaveSS_UpdateAllOp);
6046
6047	CFGNODE snapshotsNode = 0;
6048	CFGNODE snapshotNode = 0;
6049
6050	if (!recreateWholeTree)
6051	{
6052	rc = findSnapshotNode (aSnapshot, aMachineNode,
6053	&snapshotsNode, &snapshotNode);
6054	if (FAILED (rc))
6055	break;
6056	ComAssertBreak (snapshotNode, rc = E_FAIL);
6057	}
6058
6059	if (!snapshotsNode)
6060	snapshotsNode = aMachineNode;
6061
6062	if (op == SaveSS_UpdateAttrsOp)
6063	rc = saveSnapshot (snapshotNode, aSnapshot, true /* aAttrsOnly */);
6064	else do
6065	{
6066	if (snapshotNode)
6067	{
6068	CFGLDRDeleteNode (snapshotNode);
6069	snapshotNode = 0;
6070	}
6071	CFGLDRAppendChildNode (snapshotsNode, "Snapshot", &snapshotNode);
6072	ComAssertBreak (snapshotNode, rc = E_FAIL);
6073	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6074	}
6075	while (0);
6076
6077	CFGLDRReleaseNode (snapshotNode);
6078	if (snapshotsNode != aMachineNode)
6079	CFGLDRReleaseNode (snapshotsNode);
6080	}
6081	while (0);
6082
6083	if (SUCCEEDED (rc))
6084	{
6085	/* update currentSnapshot when appropriate */
6086	if (aOpFlags & SaveSS_UpdateCurrentId)
6087	{
6088	if (!mData->mCurrentSnapshot.isNull())
6089	CFGLDRSetUUID (aMachineNode, "currentSnapshot",
6090	mData->mCurrentSnapshot->data().mId);
6091	else
6092	CFGLDRDeleteAttribute (aMachineNode, "currentSnapshot");
6093	}
6094	if (aOpFlags & SaveSS_UpdateCurStateModified)
6095	{
6096	if (!mData->mCurrentStateModified)
6097	CFGLDRSetBool (aMachineNode, "currentStateModified", false);
6098	else
6099	CFGLDRDeleteAttribute (aMachineNode, "currentStateModified");
6100	}
6101	}
6102
6103	return rc;
6104	}
6105
6106	/**
6107	* Saves the given snapshot and all its children (unless \a aAttrsOnly is true).
6108	* It is assumed that the given node is empty (unless \a aAttrsOnly is true).
6109	*
6110	* @param aNode <Snapshot> node to save the snapshot to
6111	* @param aSnapshot snapshot to save
6112	* @param aAttrsOnly if true, only updatge user-changeable attrs
6113	*/
6114	HRESULT Machine::saveSnapshot (CFGNODE aNode, Snapshot *aSnapshot, bool aAttrsOnly)
6115	{
6116	AssertReturn (aNode && aSnapshot, E_INVALIDARG);
6117	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6118
6119	/* uuid (required) */
6120	if (!aAttrsOnly)
6121	CFGLDRSetUUID (aNode, "uuid", aSnapshot->data().mId);
6122
6123	/* name (required) */
6124	CFGLDRSetBSTR (aNode, "name", aSnapshot->data().mName);
6125
6126	/* timeStamp (required) */
6127	CFGLDRSetDateTime (aNode, "timeStamp", aSnapshot->data().mTimeStamp);
6128
6129	/* Description node (optional) */
6130	if (!aSnapshot->data().mDescription.isNull())
6131	{
6132	CFGNODE descNode = 0;
6133	CFGLDRCreateChildNode (aNode, "Description", &descNode);
6134	Assert (descNode);
6135	CFGLDRSetBSTR (descNode, NULL, aSnapshot->data().mDescription);
6136	CFGLDRReleaseNode (descNode);
6137	}
6138	else
6139	{
6140	CFGNODE descNode = 0;
6141	CFGLDRGetChildNode (aNode, "Description", 0, &descNode);
6142	if (descNode)
6143	CFGLDRDeleteNode (descNode);
6144	}
6145
6146	if (aAttrsOnly)
6147	return S_OK;
6148
6149	/* stateFile (optional) */
6150	if (aSnapshot->stateFilePath())
6151	{
6152	/* try to make the file name relative to the settings file dir */
6153	Utf8Str stateFilePath = aSnapshot->stateFilePath();
6154	calculateRelativePath (stateFilePath, stateFilePath);
6155	CFGLDRSetString (aNode, "stateFile", stateFilePath);
6156	}
6157
6158	{
6159	ComObjPtr <SnapshotMachine> snapshotMachine = aSnapshot->data().mMachine;
6160	ComAssertRet (!snapshotMachine.isNull(), E_FAIL);
6161
6162	/* save hardware */
6163	{
6164	CFGNODE hwNode = 0;
6165	CFGLDRCreateChildNode (aNode, "Hardware", &hwNode);
6166
6167	HRESULT rc = snapshotMachine->saveHardware (hwNode);
6168
6169	CFGLDRReleaseNode (hwNode);
6170	if (FAILED (rc))
6171	return rc;
6172	}
6173
6174	/* save hard disks */
6175	{
6176	CFGNODE hdasNode = 0;
6177	CFGLDRCreateChildNode (aNode, "HardDiskAttachments", &hdasNode);
6178
6179	HRESULT rc = snapshotMachine->saveHardDisks (hdasNode);
6180
6181	CFGLDRReleaseNode (hdasNode);
6182	if (FAILED (rc))
6183	return rc;
6184	}
6185	}
6186
6187	/* save children */
6188	{
6189	AutoLock listLock (aSnapshot->childrenLock());
6190
6191	if (aSnapshot->children().size())
6192	{
6193	CFGNODE snapshotsNode = 0;
6194	CFGLDRCreateChildNode (aNode, "Snapshots", &snapshotsNode);
6195
6196	HRESULT rc = S_OK;
6197
6198	for (Snapshot::SnapshotList::const_iterator it = aSnapshot->children().begin();
6199	it != aSnapshot->children().end() && SUCCEEDED (rc);
6200	++ it)
6201	{
6202	CFGNODE snapshotNode = 0;
6203	CFGLDRCreateChildNode (snapshotsNode, "Snapshot", &snapshotNode);
6204
6205	rc = saveSnapshot (snapshotNode, (*it), aAttrsOnly);
6206
6207	CFGLDRReleaseNode (snapshotNode);
6208	}
6209
6210	CFGLDRReleaseNode (snapshotsNode);
6211	if (FAILED (rc))
6212	return rc;
6213	}
6214	}
6215
6216	return S_OK;
6217	}
6218
6219	/**
6220	* Creates Saves the VM hardware configuration.
6221	* It is assumed that the given node is empty.
6222	*
6223	* @param aNode <Hardware> node to save the VM hardware confguration to
6224	*/
6225	HRESULT Machine::saveHardware (CFGNODE aNode)
6226	{
6227	AssertReturn (aNode, E_INVALIDARG);
6228
6229	HRESULT rc = S_OK;
6230
6231	/* CPU */
6232	{
6233	CFGNODE cpuNode = 0;
6234	CFGLDRCreateChildNode (aNode, "CPU", &cpuNode);
6235	CFGNODE hwVirtExNode = 0;
6236	CFGLDRCreateChildNode (cpuNode, "HardwareVirtEx", &hwVirtExNode);
6237	const char *value = NULL;
6238	switch (mHWData->mHWVirtExEnabled)
6239	{
6240	case TriStateBool_False:
6241	value = "false";
6242	break;
6243	case TriStateBool_True:
6244	value = "true";
6245	break;
6246	default:
6247	value = "default";
6248	}
6249	CFGLDRSetString (hwVirtExNode, "enabled", value);
6250	CFGLDRReleaseNode (hwVirtExNode);
6251	CFGLDRReleaseNode (cpuNode);
6252	}
6253
6254	/* memory (required) */
6255	{
6256	CFGNODE memoryNode = 0;
6257	CFGLDRCreateChildNode (aNode, "Memory", &memoryNode);
6258	CFGLDRSetUInt32 (memoryNode, "RAMSize", mHWData->mMemorySize);
6259	CFGLDRReleaseNode (memoryNode);
6260	}
6261
6262	/* boot (required) */
6263	do
6264	{
6265	CFGNODE bootNode = 0;
6266	CFGLDRCreateChildNode (aNode, "Boot", &bootNode);
6267
6268	for (ULONG pos = 0; pos < ELEMENTS (mHWData->mBootOrder); pos ++)
6269	{
6270	const char *device = NULL;
6271	switch (mHWData->mBootOrder [pos])
6272	{
6273	case DeviceType_NoDevice:
6274	/* skip, this is allowed for <Order> nodes
6275	* when loading, the default value NoDevice will remain */
6276	continue;
6277	case DeviceType_FloppyDevice: device = "Floppy"; break;
6278	case DeviceType_DVDDevice: device = "DVD"; break;
6279	case DeviceType_HardDiskDevice: device = "HardDisk"; break;
6280	case DeviceType_NetworkDevice: device = "Network"; break;
6281	default:
6282	ComAssertMsgFailedBreak (("Invalid boot device: %d\n",
6283	mHWData->mBootOrder [pos]),
6284	rc = E_FAIL);
6285	}
6286	if (FAILED (rc))
6287	break;
6288
6289	CFGNODE orderNode = 0;
6290	CFGLDRAppendChildNode (bootNode, "Order", &orderNode);
6291
6292	CFGLDRSetUInt32 (orderNode, "position", pos + 1);
6293	CFGLDRSetString (orderNode, "device", device);
6294
6295	CFGLDRReleaseNode (orderNode);
6296	}
6297
6298	CFGLDRReleaseNode (bootNode);
6299	}
6300	while (0);
6301
6302	CheckComRCReturnRC (rc);
6303
6304	/* display (required) */
6305	{
6306	CFGNODE displayNode = 0;
6307	CFGLDRCreateChildNode (aNode, "Display", &displayNode);
6308	CFGLDRSetUInt32 (displayNode, "VRAMSize", mHWData->mVRAMSize);
6309	CFGLDRSetUInt32 (displayNode, "MonitorCount", mHWData->mMonitorCount);
6310	CFGLDRReleaseNode (displayNode);
6311	}
6312
6313	#ifdef VBOX_VRDP
6314	/* VRDP settings (optional) */
6315	{
6316	CFGNODE remoteDisplayNode = 0;
6317	CFGLDRCreateChildNode (aNode, "RemoteDisplay", &remoteDisplayNode);
6318	if (remoteDisplayNode)
6319	{
6320	rc = mVRDPServer->saveSettings (remoteDisplayNode);
6321	CFGLDRReleaseNode (remoteDisplayNode);
6322	CheckComRCReturnRC (rc);
6323	}
6324	}
6325	#endif
6326
6327	/* BIOS (required) */
6328	{
6329	CFGNODE biosNode = 0;
6330	CFGLDRCreateChildNode (aNode, "BIOS", &biosNode);
6331	{
6332	BOOL fSet;
6333	/* ACPI */
6334	CFGNODE acpiNode = 0;
6335	CFGLDRCreateChildNode (biosNode, "ACPI", &acpiNode);
6336	mBIOSSettings->COMGETTER(ACPIEnabled)(&fSet);
6337	CFGLDRSetBool (acpiNode, "enabled", !!fSet);
6338	CFGLDRReleaseNode (acpiNode);
6339
6340	/* IOAPIC */
6341	CFGNODE ioapicNode = 0;
6342	CFGLDRCreateChildNode (biosNode, "IOAPIC", &ioapicNode);
6343	mBIOSSettings->COMGETTER(IOAPICEnabled)(&fSet);
6344	CFGLDRSetBool (ioapicNode, "enabled", !!fSet);
6345	CFGLDRReleaseNode (ioapicNode);
6346
6347	/* BIOS logo (optional) **/
6348	CFGNODE logoNode = 0;
6349	CFGLDRCreateChildNode (biosNode, "Logo", &logoNode);
6350	mBIOSSettings->COMGETTER(LogoFadeIn)(&fSet);
6351	CFGLDRSetBool (logoNode, "fadeIn", !!fSet);
6352	mBIOSSettings->COMGETTER(LogoFadeOut)(&fSet);
6353	CFGLDRSetBool (logoNode, "fadeOut", !!fSet);
6354	ULONG ulDisplayTime;
6355	mBIOSSettings->COMGETTER(LogoDisplayTime)(&ulDisplayTime);
6356	CFGLDRSetUInt32 (logoNode, "displayTime", ulDisplayTime);
6357	Bstr logoPath;
6358	mBIOSSettings->COMGETTER(LogoImagePath)(logoPath.asOutParam());
6359	if (logoPath)
6360	CFGLDRSetBSTR (logoNode, "imagePath", logoPath);
6361	else
6362	CFGLDRDeleteAttribute (logoNode, "imagePath");
6363	CFGLDRReleaseNode (logoNode);
6364
6365	/* boot menu (optional) */
6366	CFGNODE bootMenuNode = 0;
6367	CFGLDRCreateChildNode (biosNode, "BootMenu", &bootMenuNode);
6368	BIOSBootMenuMode_T bootMenuMode;
6369	Bstr bootMenuModeStr;
6370	mBIOSSettings->COMGETTER(BootMenuMode)(&bootMenuMode);
6371	switch (bootMenuMode)
6372	{
6373	case BIOSBootMenuMode_Disabled:
6374	bootMenuModeStr = "disabled";
6375	break;
6376	case BIOSBootMenuMode_MenuOnly:
6377	bootMenuModeStr = "menuonly";
6378	break;
6379	default:
6380	bootMenuModeStr = "messageandmenu";
6381	}
6382	CFGLDRSetBSTR (bootMenuNode, "mode", bootMenuModeStr);
6383	CFGLDRReleaseNode (bootMenuNode);
6384
6385	/* time offset (optional) */
6386	CFGNODE timeOffsetNode = 0;
6387	CFGLDRCreateChildNode (biosNode, "TimeOffset", &timeOffsetNode);
6388	LONG64 timeOffset;
6389	mBIOSSettings->COMGETTER(TimeOffset)(&timeOffset);
6390	CFGLDRSetInt64 (timeOffsetNode, "value", timeOffset);
6391	CFGLDRReleaseNode (timeOffsetNode);
6392
6393	/* PXE debug flag (optional) */
6394	CFGNODE pxedebugNode = 0;
6395	CFGLDRCreateChildNode (biosNode, "PXEDebug", &pxedebugNode);
6396	mBIOSSettings->COMGETTER(PXEDebugEnabled)(&fSet);
6397	CFGLDRSetBool (pxedebugNode, "enabled", !!fSet);
6398	CFGLDRReleaseNode (pxedebugNode);
6399
6400	/* IDE controller type */
6401	CFGNODE ideControllerNode = 0;
6402	IDEControllerType_T controllerType;
6403	CFGLDRCreateChildNode (biosNode, "IDEController", &ideControllerNode);
6404	mBIOSSettings->COMGETTER(IDEControllerType)(&controllerType);
6405	switch (controllerType)
6406	{
6407	case IDEControllerType_IDEControllerPIIX3:
6408	CFGLDRSetString (ideControllerNode, "type", "PIIX3");
6409	break;
6410	case IDEControllerType_IDEControllerPIIX4:
6411	CFGLDRSetString (ideControllerNode, "type", "PIIX4");
6412	break;
6413	default:
6414	ComAssertMsgFailedBreak (("Invalid IDE Controller type: %d\n",
6415	controllerType), rc = E_FAIL);
6416	}
6417	CFGLDRReleaseNode (ideControllerNode);
6418
6419	}
6420	CFGLDRReleaseNode(biosNode);
6421	}
6422
6423	/* DVD drive (required) */
6424	/// @todo (dmik) move the code to DVDDrive
6425	do
6426	{
6427	CFGNODE dvdNode = 0;
6428	CFGLDRCreateChildNode (aNode, "DVDDrive", &dvdNode);
6429
6430	BOOL fPassthrough;
6431	mDVDDrive->COMGETTER(Passthrough)(&fPassthrough);
6432	CFGLDRSetBool(dvdNode, "passthrough", !!fPassthrough);
6433
6434	switch (mDVDDrive->data()->mDriveState)
6435	{
6436	case DriveState_ImageMounted:
6437	{
6438	Assert (!mDVDDrive->data()->mDVDImage.isNull());
6439
6440	Guid id;
6441	rc = mDVDDrive->data()->mDVDImage->COMGETTER(Id) (id.asOutParam());
6442	Assert (!id.isEmpty());
6443
6444	CFGNODE imageNode = 0;
6445	CFGLDRCreateChildNode (dvdNode, "Image", &imageNode);
6446	CFGLDRSetUUID (imageNode, "uuid", id.ptr());
6447	CFGLDRReleaseNode (imageNode);
6448	break;
6449	}
6450	case DriveState_HostDriveCaptured:
6451	{
6452	Assert (!mDVDDrive->data()->mHostDrive.isNull());
6453
6454	Bstr name;
6455	rc = mDVDDrive->data()->mHostDrive->COMGETTER(Name) (name.asOutParam());
6456	Assert (!name.isEmpty());
6457
6458	CFGNODE hostDriveNode = 0;
6459	CFGLDRCreateChildNode (dvdNode, "HostDrive", &hostDriveNode);
6460	CFGLDRSetBSTR (hostDriveNode, "src", name);
6461	CFGLDRReleaseNode (hostDriveNode);
6462	break;
6463	}
6464	case DriveState_NotMounted:
6465	/* do nothing, i.e.leave the DVD drive node empty */
6466	break;
6467	default:
6468	ComAssertMsgFailedBreak (("Invalid DVD drive state: %d\n",
6469	mDVDDrive->data()->mDriveState),
6470	rc = E_FAIL);
6471	}
6472
6473	CFGLDRReleaseNode (dvdNode);
6474	}
6475	while (0);
6476
6477	CheckComRCReturnRC (rc);
6478
6479	/* Flooppy drive (required) */
6480	/// @todo (dmik) move the code to DVDDrive
6481	do
6482	{
6483	CFGNODE floppyNode = 0;
6484	CFGLDRCreateChildNode (aNode, "FloppyDrive", &floppyNode);
6485
6486	BOOL fFloppyEnabled;
6487	rc = mFloppyDrive->COMGETTER(Enabled)(&fFloppyEnabled);
6488	CFGLDRSetBool (floppyNode, "enabled", !!fFloppyEnabled);
6489
6490	switch (mFloppyDrive->data()->mDriveState)
6491	{
6492	case DriveState_ImageMounted:
6493	{
6494	Assert (!mFloppyDrive->data()->mFloppyImage.isNull());
6495
6496	Guid id;
6497	rc = mFloppyDrive->data()->mFloppyImage->COMGETTER(Id) (id.asOutParam());
6498	Assert (!id.isEmpty());
6499
6500	CFGNODE imageNode = 0;
6501	CFGLDRCreateChildNode (floppyNode, "Image", &imageNode);
6502	CFGLDRSetUUID (imageNode, "uuid", id.ptr());
6503	CFGLDRReleaseNode (imageNode);
6504	break;
6505	}
6506	case DriveState_HostDriveCaptured:
6507	{
6508	Assert (!mFloppyDrive->data()->mHostDrive.isNull());
6509
6510	Bstr name;
6511	rc = mFloppyDrive->data()->mHostDrive->COMGETTER(Name) (name.asOutParam());
6512	Assert (!name.isEmpty());
6513
6514	CFGNODE hostDriveNode = 0;
6515	CFGLDRCreateChildNode (floppyNode, "HostDrive", &hostDriveNode);
6516	CFGLDRSetBSTR (hostDriveNode, "src", name);
6517	CFGLDRReleaseNode (hostDriveNode);
6518	break;
6519	}
6520	case DriveState_NotMounted:
6521	/* do nothing, i.e.leave the Floppy drive node empty */
6522	break;
6523	default:
6524	ComAssertMsgFailedBreak (("Invalid Floppy drive state: %d\n",
6525	mFloppyDrive->data()->mDriveState),
6526	rc = E_FAIL);
6527	}
6528
6529	CFGLDRReleaseNode (floppyNode);
6530	}
6531	while (0);
6532
6533	CheckComRCReturnRC (rc);
6534
6535
6536	/* USB Controller (required) */
6537	rc = mUSBController->saveSettings (aNode);
6538	CheckComRCReturnRC (rc);
6539
6540	/* Network adapters (required) */
6541	do
6542	{
6543	CFGNODE nwNode = 0;
6544	CFGLDRCreateChildNode (aNode, "Network", &nwNode);
6545
6546	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
6547	{
6548	CFGNODE networkAdapterNode = 0;
6549	CFGLDRAppendChildNode (nwNode, "Adapter", &networkAdapterNode);
6550
6551	CFGLDRSetUInt32 (networkAdapterNode, "slot", slot);
6552	CFGLDRSetBool (networkAdapterNode, "enabled",
6553	!!mNetworkAdapters [slot]->data()->mEnabled);
6554	CFGLDRSetBSTR (networkAdapterNode, "MACAddress",
6555	mNetworkAdapters [slot]->data()->mMACAddress);
6556	CFGLDRSetBool (networkAdapterNode, "cable",
6557	!!mNetworkAdapters [slot]->data()->mCableConnected);
6558
6559	CFGLDRSetUInt32 (networkAdapterNode, "speed",
6560	mNetworkAdapters [slot]->data()->mLineSpeed);
6561
6562	if (mNetworkAdapters [slot]->data()->mTraceEnabled)
6563	CFGLDRSetBool (networkAdapterNode, "trace", true);
6564
6565	CFGLDRSetBSTR (networkAdapterNode, "tracefile",
6566	mNetworkAdapters [slot]->data()->mTraceFile);
6567
6568	switch (mNetworkAdapters [slot]->data()->mAdapterType)
6569	{
6570	case NetworkAdapterType_NetworkAdapterAm79C970A:
6571	CFGLDRSetString (networkAdapterNode, "type", "Am79C970A");
6572	break;
6573	case NetworkAdapterType_NetworkAdapterAm79C973:
6574	CFGLDRSetString (networkAdapterNode, "type", "Am79C973");
6575	break;
6576	default:
6577	ComAssertMsgFailedBreak (("Invalid network adapter type: %d\n",
6578	mNetworkAdapters [slot]->data()->mAdapterType),
6579	rc = E_FAIL);
6580	}
6581
6582	CFGNODE attachmentNode = 0;
6583	switch (mNetworkAdapters [slot]->data()->mAttachmentType)
6584	{
6585	case NetworkAttachmentType_NoNetworkAttachment:
6586	{
6587	/* do nothing -- empty content */
6588	break;
6589	}
6590	case NetworkAttachmentType_NATNetworkAttachment:
6591	{
6592	CFGLDRAppendChildNode (networkAdapterNode, "NAT", &attachmentNode);
6593	break;
6594	}
6595	case NetworkAttachmentType_HostInterfaceNetworkAttachment:
6596	{
6597	CFGLDRAppendChildNode (networkAdapterNode, "HostInterface", &attachmentNode);
6598	const Bstr &name = mNetworkAdapters [slot]->data()->mHostInterface;
6599	#ifdef RT_OS_WINDOWS
6600	Assert (!name.isNull());
6601	#endif
6602	#ifdef VBOX_WITH_UNIXY_TAP_NETWORKING
6603	if (!name.isEmpty())
6604	#endif
6605	CFGLDRSetBSTR (attachmentNode, "name", name);
6606	#ifdef VBOX_WITH_UNIXY_TAP_NETWORKING
6607	const Bstr &tapSetupApp =
6608	mNetworkAdapters [slot]->data()->mTAPSetupApplication;
6609	if (!tapSetupApp.isEmpty())
6610	CFGLDRSetBSTR (attachmentNode, "TAPSetup", tapSetupApp);
6611	const Bstr &tapTerminateApp =
6612	mNetworkAdapters [slot]->data()->mTAPTerminateApplication;
6613	if (!tapTerminateApp.isEmpty())
6614	CFGLDRSetBSTR (attachmentNode, "TAPTerminate", tapTerminateApp);
6615	#endif /* VBOX_WITH_UNIXY_TAP_NETWORKING */
6616	break;
6617	}
6618	case NetworkAttachmentType_InternalNetworkAttachment:
6619	{
6620	CFGLDRAppendChildNode (networkAdapterNode, "InternalNetwork", &attachmentNode);
6621	const Bstr &name = mNetworkAdapters[slot]->data()->mInternalNetwork;
6622	Assert(!name.isNull());
6623	CFGLDRSetBSTR (attachmentNode, "name", name);
6624	break;
6625	}
6626	default:
6627	{
6628	ComAssertFailedBreak (rc = E_FAIL);
6629	break;
6630	}
6631	}
6632	if (attachmentNode)
6633	CFGLDRReleaseNode (attachmentNode);
6634
6635	CFGLDRReleaseNode (networkAdapterNode);
6636	}
6637
6638	CFGLDRReleaseNode (nwNode);
6639	}
6640	while (0);
6641
6642	if (FAILED (rc))
6643	return rc;
6644
6645	/* Serial ports */
6646	CFGNODE serialNode = 0;
6647	CFGLDRCreateChildNode (aNode, "Uart", &serialNode);
6648
6649	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot++)
6650	{
6651	rc = mSerialPorts [slot]->saveSettings (serialNode);
6652	CheckComRCReturnRC (rc);
6653	}
6654	CFGLDRReleaseNode (serialNode);
6655
6656	/* Parallel ports */
6657	CFGNODE parallelNode = 0;
6658	CFGLDRCreateChildNode (aNode, "Lpt", &parallelNode);
6659
6660	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot++)
6661	{
6662	rc = mParallelPorts [slot]->saveSettings (parallelNode);
6663	CheckComRCReturnRC (rc);
6664	}
6665	CFGLDRReleaseNode (parallelNode);
6666
6667	/* Audio adapter */
6668	do
6669	{
6670	CFGNODE adapterNode = 0;
6671	CFGLDRCreateChildNode (aNode, "AudioAdapter", &adapterNode);
6672
6673	switch (mAudioAdapter->data()->mAudioDriver)
6674	{
6675	case AudioDriverType_NullAudioDriver:
6676	{
6677	CFGLDRSetString (adapterNode, "driver", "null");
6678	break;
6679	}
6680	#ifdef RT_OS_WINDOWS
6681	case AudioDriverType_WINMMAudioDriver:
6682	# ifdef VBOX_WITH_WINMM
6683	{
6684	CFGLDRSetString (adapterNode, "driver", "winmm");
6685	break;
6686	}
6687	# endif
6688	case AudioDriverType_DSOUNDAudioDriver:
6689	{
6690	CFGLDRSetString (adapterNode, "driver", "dsound");
6691	break;
6692	}
6693	#endif /* RT_OS_WINDOWS */
6694	#ifdef RT_OS_LINUX
6695	case AudioDriverType_ALSAAudioDriver:
6696	# ifdef VBOX_WITH_ALSA
6697	{
6698	CFGLDRSetString (adapterNode, "driver", "alsa");
6699	break;
6700	}
6701	# endif
6702	case AudioDriverType_OSSAudioDriver:
6703	{
6704	CFGLDRSetString (adapterNode, "driver", "oss");
6705	break;
6706	}
6707	#endif /* RT_OS_LINUX */
6708	#ifdef RT_OS_DARWIN
6709	case AudioDriverType_CoreAudioDriver:
6710	{
6711	CFGLDRSetString (adapterNode, "driver", "coreaudio");
6712	break;
6713	}
6714	#endif
6715	#ifdef RT_OS_OS2
6716	case AudioDriverType_MMPMAudioDriver:
6717	{
6718	CFGLDRSetString (adapterNode, "driver", "mmpm");
6719	break;
6720	}
6721	#endif
6722	default:
6723	ComAssertMsgFailedBreak (("Wrong audio driver type! driver = %d\n",
6724	mAudioAdapter->data()->mAudioDriver),
6725	rc = E_FAIL);
6726	}
6727
6728	CFGLDRSetBool (adapterNode, "enabled", !!mAudioAdapter->data()->mEnabled);
6729
6730	CFGLDRReleaseNode (adapterNode);
6731	}
6732	while (0);
6733
6734	if (FAILED (rc))
6735	return rc;
6736
6737	/* Shared folders */
6738	do
6739	{
6740	CFGNODE sharedFoldersNode = 0;
6741	CFGLDRCreateChildNode (aNode, "SharedFolders", &sharedFoldersNode);
6742
6743	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
6744	it != mHWData->mSharedFolders.end();
6745	++ it)
6746	{
6747	ComObjPtr <SharedFolder> folder = *it;
6748
6749	CFGNODE folderNode = 0;
6750	CFGLDRAppendChildNode (sharedFoldersNode, "SharedFolder", &folderNode);
6751
6752	/* all are mandatory */
6753	CFGLDRSetBSTR (folderNode, "name", folder->name());
6754	CFGLDRSetBSTR (folderNode, "hostPath", folder->hostPath());
6755
6756	CFGLDRReleaseNode (folderNode);
6757	}
6758
6759	CFGLDRReleaseNode (sharedFoldersNode);
6760	}
6761	while (0);
6762
6763	/* Clipboard */
6764	{
6765	CFGNODE clipNode = 0;
6766	CFGLDRCreateChildNode (aNode, "Clipboard", &clipNode);
6767
6768	const char *mode = "Disabled";
6769	switch (mHWData->mClipboardMode)
6770	{
6771	case ClipboardMode_ClipDisabled:
6772	/* already assigned */
6773	break;
6774	case ClipboardMode_ClipHostToGuest:
6775	mode = "HostToGuest";
6776	break;
6777	case ClipboardMode_ClipGuestToHost:
6778	mode = "GuestToHost";
6779	break;
6780	case ClipboardMode_ClipBidirectional:
6781	mode = "Bidirectional";
6782	break;
6783	default:
6784	AssertMsgFailed (("Clipboard mode %d is invalid",
6785	mHWData->mClipboardMode));
6786	break;
6787	}
6788	CFGLDRSetString (clipNode, "mode", mode);
6789
6790	CFGLDRReleaseNode (clipNode);
6791	}
6792
6793	/* Guest */
6794	{
6795	CFGNODE guestNode = 0;
6796	CFGLDRGetChildNode (aNode, "Guest", 0, &guestNode);
6797	/* first, delete the entire node if exists */
6798	if (guestNode)
6799	CFGLDRDeleteNode (guestNode);
6800	/* then recreate it */
6801	guestNode = 0;
6802	CFGLDRCreateChildNode (aNode, "Guest", &guestNode);
6803
6804	CFGLDRSetUInt32 (guestNode, "MemoryBalloonSize",
6805	mHWData->mMemoryBalloonSize);
6806	CFGLDRSetUInt32 (guestNode, "StatisticsUpdateInterval",
6807	mHWData->mStatisticsUpdateInterval);
6808
6809	CFGLDRReleaseNode (guestNode);
6810	}
6811
6812	return rc;
6813	}
6814
6815	/**
6816	* Saves the hard disk confguration.
6817	* It is assumed that the given node is empty.
6818	*
6819	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to
6820	*/
6821	HRESULT Machine::saveHardDisks (CFGNODE aNode)
6822	{
6823	AssertReturn (aNode, E_INVALIDARG);
6824
6825	HRESULT rc = S_OK;
6826
6827	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
6828	it != mHDData->mHDAttachments.end() && SUCCEEDED (rc);
6829	++ it)
6830	{
6831	ComObjPtr <HardDiskAttachment> att = *it;
6832
6833	CFGNODE hdNode = 0;
6834	CFGLDRAppendChildNode (aNode, "HardDiskAttachment", &hdNode);
6835
6836	do
6837	{
6838	const char *bus = NULL;
6839	switch (att->controller())
6840	{
6841	case DiskControllerType_IDE0Controller: bus = "ide0"; break;
6842	case DiskControllerType_IDE1Controller: bus = "ide1"; break;
6843	default:
6844	ComAssertFailedBreak (rc = E_FAIL);
6845	}
6846	if (FAILED (rc))
6847	break;
6848
6849	const char *dev = NULL;
6850	switch (att->deviceNumber())
6851	{
6852	case 0: dev = "master"; break;
6853	case 1: dev = "slave"; break;
6854	default:
6855	ComAssertFailedBreak (rc = E_FAIL);
6856	}
6857	if (FAILED (rc))
6858	break;
6859
6860	CFGLDRSetUUID (hdNode, "hardDisk", att->hardDisk()->id());
6861	CFGLDRSetString (hdNode, "bus", bus);
6862	CFGLDRSetString (hdNode, "device", dev);
6863	}
6864	while (0);
6865
6866	CFGLDRReleaseNode (hdNode);
6867	}
6868
6869	return rc;
6870	}
6871
6872	/**
6873	* Saves machine state settings as defined by aFlags
6874	* (SaveSTS_* values).
6875	*
6876	* @param aFlags a combination of SaveSTS_* flags
6877	*
6878	* @note Locks objects!
6879	*/
6880	HRESULT Machine::saveStateSettings (int aFlags)
6881	{
6882	if (aFlags == 0)
6883	return S_OK;
6884
6885	AutoCaller autoCaller (this);
6886	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6887
6888	AutoLock alock (this);
6889
6890	/* load the config file */
6891	CFGHANDLE configLoader = 0;
6892	HRESULT rc = openConfigLoader (&configLoader);
6893	if (FAILED (rc))
6894	return rc;
6895
6896	CFGNODE machineNode = 0;
6897	CFGLDRGetNode (configLoader, "VirtualBox/Machine", 0, &machineNode);
6898
6899	do
6900	{
6901	ComAssertBreak (machineNode, rc = E_FAIL);
6902
6903	if (aFlags & SaveSTS_CurStateModified)
6904	{
6905	if (!mData->mCurrentStateModified)
6906	CFGLDRSetBool (machineNode, "currentStateModified", false);
6907	else
6908	CFGLDRDeleteAttribute (machineNode, "currentStateModified");
6909	}
6910
6911	if (aFlags & SaveSTS_StateFilePath)
6912	{
6913	if (mSSData->mStateFilePath)
6914	{
6915	/* try to make the file name relative to the settings file dir */
6916	Utf8Str stateFilePath = mSSData->mStateFilePath;
6917	calculateRelativePath (stateFilePath, stateFilePath);
6918	CFGLDRSetString (machineNode, "stateFile", stateFilePath);
6919	}
6920	else
6921	CFGLDRDeleteAttribute (machineNode, "stateFile");
6922	}
6923
6924	if (aFlags & SaveSTS_StateTimeStamp)
6925	{
6926	Assert (mData->mMachineState != MachineState_Aborted \|\|
6927	mSSData->mStateFilePath.isNull());
6928
6929	CFGLDRSetDateTime (machineNode, "lastStateChange",
6930	mData->mLastStateChange);
6931
6932	// set the aborted attribute when appropriate
6933	if (mData->mMachineState == MachineState_Aborted)
6934	CFGLDRSetBool (machineNode, "aborted", true);
6935	else
6936	CFGLDRDeleteAttribute (machineNode, "aborted");
6937	}
6938	}
6939	while (0);
6940
6941	if (machineNode)
6942	CFGLDRReleaseNode (machineNode);
6943
6944	if (SUCCEEDED (rc))
6945	rc = closeConfigLoader (configLoader, true /* aSaveBeforeClose */);
6946	else
6947	closeConfigLoader (configLoader, false /* aSaveBeforeClose */);
6948
6949	return rc;
6950	}
6951
6952	/**
6953	* Cleans up all differencing hard disks based on immutable hard disks.
6954	*
6955	* @note Locks objects!
6956	*/
6957	HRESULT Machine::wipeOutImmutableDiffs()
6958	{
6959	AutoCaller autoCaller (this);
6960	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6961
6962	AutoReaderLock alock (this);
6963
6964	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
6965	mData->mMachineState == MachineState_Aborted, E_FAIL);
6966
6967	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
6968	it != mHDData->mHDAttachments.end();
6969	++ it)
6970	{
6971	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
6972	AutoLock hdLock (hd);
6973
6974	if(hd->isParentImmutable())
6975	{
6976	/// @todo (dmik) no error handling for now
6977	// (need async error reporting for this)
6978	hd->asVDI()->wipeOutImage();
6979	}
6980	}
6981
6982	return S_OK;
6983	}
6984
6985	/**
6986	* Fixes up lazy hard disk attachments by creating or deleting differencing
6987	* hard disks when machine settings are being committed.
6988	* Must be called only from #commit().
6989	*
6990	* @note Locks objects!
6991	*/
6992	HRESULT Machine::fixupHardDisks (bool aCommit)
6993	{
6994	AutoCaller autoCaller (this);
6995	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6996
6997	AutoLock alock (this);
6998
6999	/* no attac/detach operations -- nothing to do */
7000	if (!mHDData.isBackedUp())
7001	{
7002	mHDData->mHDAttachmentsChanged = false;
7003	return S_OK;
7004	}
7005
7006	AssertReturn (mData->mRegistered, E_FAIL);
7007
7008	if (aCommit)
7009	{
7010	/*
7011	* changes are being committed,
7012	* perform actual diff image creation, deletion etc.
7013	*/
7014
7015	/* take a copy of backed up attachments (will modify it) */
7016	HDData::HDAttachmentList backedUp = mHDData.backedUpData()->mHDAttachments;
7017	/* list of new diffs created */
7018	std::list <ComObjPtr <HardDisk> > newDiffs;
7019
7020	HRESULT rc = S_OK;
7021
7022	/* go through current attachments */
7023	for (HDData::HDAttachmentList::const_iterator
7024	it = mHDData->mHDAttachments.begin();
7025	it != mHDData->mHDAttachments.end();
7026	++ it)
7027	{
7028	ComObjPtr <HardDiskAttachment> hda = *it;
7029	ComObjPtr <HardDisk> hd = hda->hardDisk();
7030	AutoLock hdLock (hd);
7031
7032	if (!hda->isDirty())
7033	{
7034	/*
7035	* not dirty, therefore was either attached before backing up
7036	* or doesn't need any fixup (already fixed up); try to locate
7037	* this hard disk among backed up attachments and remove from
7038	* there to prevent it from being deassociated/deleted
7039	*/
7040	HDData::HDAttachmentList::iterator oldIt;
7041	for (oldIt = backedUp.begin(); oldIt != backedUp.end(); ++ oldIt)
7042	if ((*oldIt)->hardDisk().equalsTo (hd))
7043	break;
7044	if (oldIt != backedUp.end())
7045	{
7046	/* remove from there */
7047	backedUp.erase (oldIt);
7048	Log3 (("FC: %ls found in old\n", hd->toString().raw()));
7049	}
7050	}
7051	else
7052	{
7053	/* dirty, determine what to do */
7054
7055	bool needDiff = false;
7056	bool searchAmongSnapshots = false;
7057
7058	switch (hd->type())
7059	{
7060	case HardDiskType_ImmutableHardDisk:
7061	{
7062	/* decrease readers increased in AttachHardDisk() */
7063	hd->releaseReader();
7064	Log3 (("FC: %ls released\n", hd->toString().raw()));
7065	/* indicate we need a diff (indirect attachment) */
7066	needDiff = true;
7067	break;
7068	}
7069	case HardDiskType_WritethroughHardDisk:
7070	{
7071	/* reset the dirty flag */
7072	hda->updateHardDisk (hd, false /* aDirty */);
7073	Log3 (("FC: %ls updated\n", hd->toString().raw()));
7074	break;
7075	}
7076	case HardDiskType_NormalHardDisk:
7077	{
7078	if (hd->snapshotId().isEmpty())
7079	{
7080	/* reset the dirty flag */
7081	hda->updateHardDisk (hd, false /* aDirty */);
7082	Log3 (("FC: %ls updated\n", hd->toString().raw()));
7083	}
7084	else
7085	{
7086	/* decrease readers increased in AttachHardDisk() */
7087	hd->releaseReader();
7088	Log3 (("FC: %ls released\n", hd->toString().raw()));
7089	/* indicate we need a diff (indirect attachment) */
7090	needDiff = true;
7091	/* search for the most recent base among snapshots */
7092	searchAmongSnapshots = true;
7093	}
7094	break;
7095	}
7096	}
7097
7098	if (!needDiff)
7099	continue;
7100
7101	bool createDiff = false;
7102
7103	/*
7104	* see whether any previously attached hard disk has the
7105	* the currently attached one (Normal or Independent) as
7106	* the root
7107	*/
7108
7109	HDData::HDAttachmentList::iterator foundIt = backedUp.end();
7110
7111	for (HDData::HDAttachmentList::iterator it = backedUp.begin();
7112	it != backedUp.end();
7113	++ it)
7114	{
7115	if ((*it)->hardDisk()->root().equalsTo (hd))
7116	{
7117	/*
7118	* matched dev and ctl (i.e. attached to the same place)
7119	* will win and immediately stop the search; otherwise
7120	* the first attachment that matched the hd only will
7121	* be used
7122	*/
7123	if ((*it)->deviceNumber() == hda->deviceNumber() &&
7124	(*it)->controller() == hda->controller())
7125	{
7126	foundIt = it;
7127	break;
7128	}
7129	else
7130	if (foundIt == backedUp.end())
7131	{
7132	/*
7133	* not an exact match; ensure there is no exact match
7134	* among other current attachments referring the same
7135	* root (to prevent this attachmend from reusing the
7136	* hard disk of the other attachment that will later
7137	* give the exact match or already gave it before)
7138	*/
7139	bool canReuse = true;
7140	for (HDData::HDAttachmentList::const_iterator
7141	it2 = mHDData->mHDAttachments.begin();
7142	it2 != mHDData->mHDAttachments.end();
7143	++ it2)
7144	{
7145	if ((it2)->deviceNumber() == (it)->deviceNumber() &&
7146	(it2)->controller() == (it)->controller() &&
7147	(*it2)->hardDisk()->root().equalsTo (hd))
7148	{
7149	/*
7150	* the exact match, either non-dirty or dirty
7151	* one refers the same root: in both cases
7152	* we cannot reuse the hard disk, so break
7153	*/
7154	canReuse = false;
7155	break;
7156	}
7157	}
7158
7159	if (canReuse)
7160	foundIt = it;
7161	}
7162	}
7163	}
7164
7165	if (foundIt != backedUp.end())
7166	{
7167	/* found either one or another, reuse the diff */
7168	hda->updateHardDisk ((*foundIt)->hardDisk(),
7169	false /* aDirty */);
7170	Log3 (("FC: %ls reused as %ls\n", hd->toString().raw(),
7171	(*foundIt)->hardDisk()->toString().raw()));
7172	/* remove from there */
7173	backedUp.erase (foundIt);
7174	}
7175	else
7176	{
7177	/* was not attached, need a diff */
7178	createDiff = true;
7179	}
7180
7181	if (!createDiff)
7182	continue;
7183
7184	ComObjPtr <HardDisk> baseHd = hd;
7185
7186	if (searchAmongSnapshots)
7187	{
7188	/*
7189	* find the most recent diff based on the currently
7190	* attached root (Normal hard disk) among snapshots
7191	*/
7192
7193	ComObjPtr <Snapshot> snap = mData->mCurrentSnapshot;
7194
7195	while (snap)
7196	{
7197	AutoLock snapLock (snap);
7198
7199	const HDData::HDAttachmentList &snapAtts =
7200	snap->data().mMachine->mHDData->mHDAttachments;
7201
7202	HDData::HDAttachmentList::const_iterator foundIt = snapAtts.end();
7203
7204	for (HDData::HDAttachmentList::const_iterator
7205	it = snapAtts.begin(); it != snapAtts.end(); ++ it)
7206	{
7207	if ((*it)->hardDisk()->root().equalsTo (hd))
7208	{
7209	/*
7210	* matched dev and ctl (i.e. attached to the same place)
7211	* will win and immediately stop the search; otherwise
7212	* the first attachment that matched the hd only will
7213	* be used
7214	*/
7215	if ((*it)->deviceNumber() == hda->deviceNumber() &&
7216	(*it)->controller() == hda->controller())
7217	{
7218	foundIt = it;
7219	break;
7220	}
7221	else
7222	if (foundIt == snapAtts.end())
7223	foundIt = it;
7224	}
7225	}
7226
7227	if (foundIt != snapAtts.end())
7228	{
7229	/* the most recent diff has been found, use as a base */
7230	baseHd = (*foundIt)->hardDisk();
7231	Log3 (("FC: %ls: recent found %ls\n",
7232	hd->toString().raw(), baseHd->toString().raw()));
7233	break;
7234	}
7235
7236	snap = snap->parent();
7237	}
7238	}
7239
7240	/* create a new diff for the hard disk being indirectly attached */
7241
7242	AutoLock baseHdLock (baseHd);
7243	baseHd->addReader();
7244
7245	ComObjPtr <HVirtualDiskImage> vdi;
7246	rc = baseHd->createDiffHardDisk (mUserData->mSnapshotFolderFull,
7247	mData->mUuid, vdi, NULL);
7248	baseHd->releaseReader();
7249	CheckComRCBreakRC (rc);
7250
7251	newDiffs.push_back (ComObjPtr <HardDisk> (vdi));
7252
7253	/* update the attachment and reset the dirty flag */
7254	hda->updateHardDisk (ComObjPtr <HardDisk> (vdi),
7255	false /* aDirty */);
7256	Log3 (("FC: %ls: diff created %ls\n",
7257	baseHd->toString().raw(), vdi->toString().raw()));
7258	}
7259	}
7260
7261	if (FAILED (rc))
7262	{
7263	/* delete diffs we created */
7264	for (std::list <ComObjPtr <HardDisk> >::const_iterator
7265	it = newDiffs.begin(); it != newDiffs.end(); ++ it)
7266	{
7267	/*
7268	* unregisterDiffHardDisk() is supposed to delete and uninit
7269	* the differencing hard disk
7270	*/
7271	mParent->unregisterDiffHardDisk (*it);
7272	/* too bad if we fail here, but nothing to do, just continue */
7273	}
7274
7275	/* the best is to rollback the changes... */
7276	mHDData.rollback();
7277	mHDData->mHDAttachmentsChanged = false;
7278	Log3 (("FC: ROLLED BACK\n"));
7279	return rc;
7280	}
7281
7282	/*
7283	* go through the rest of old attachments and delete diffs
7284	* or deassociate hard disks from machines (they will become detached)
7285	*/
7286	for (HDData::HDAttachmentList::iterator
7287	it = backedUp.begin(); it != backedUp.end(); ++ it)
7288	{
7289	ComObjPtr <HardDiskAttachment> hda = *it;
7290	ComObjPtr <HardDisk> hd = hda->hardDisk();
7291	AutoLock hdLock (hd);
7292
7293	if (hd->isDifferencing())
7294	{
7295	/*
7296	* unregisterDiffHardDisk() is supposed to delete and uninit
7297	* the differencing hard disk
7298	*/
7299	Log3 (("FC: %ls diff deleted\n", hd->toString().raw()));
7300	rc = mParent->unregisterDiffHardDisk (hd);
7301	/*
7302	* too bad if we fail here, but nothing to do, just continue
7303	* (the last rc will be returned to the caller though)
7304	*/
7305	}
7306	else
7307	{
7308	/* deassociate from this machine */
7309	Log3 (("FC: %ls deassociated\n", hd->toString().raw()));
7310	hd->setMachineId (Guid());
7311	}
7312	}
7313
7314	/* commit all the changes */
7315	mHDData->mHDAttachmentsChanged = mHDData.hasActualChanges();
7316	mHDData.commit();
7317	Log3 (("FC: COMMITTED\n"));
7318
7319	return rc;
7320	}
7321
7322	/*
7323	* changes are being rolled back,
7324	* go trhough all current attachments and fix up dirty ones
7325	* the way it is done in DetachHardDisk()
7326	*/
7327
7328	for (HDData::HDAttachmentList::iterator it = mHDData->mHDAttachments.begin();
7329	it != mHDData->mHDAttachments.end();
7330	++ it)
7331	{
7332	ComObjPtr <HardDiskAttachment> hda = *it;
7333	ComObjPtr <HardDisk> hd = hda->hardDisk();
7334	AutoLock hdLock (hd);
7335
7336	if (hda->isDirty())
7337	{
7338	switch (hd->type())
7339	{
7340	case HardDiskType_ImmutableHardDisk:
7341	{
7342	/* decrease readers increased in AttachHardDisk() */
7343	hd->releaseReader();
7344	Log3 (("FR: %ls released\n", hd->toString().raw()));
7345	break;
7346	}
7347	case HardDiskType_WritethroughHardDisk:
7348	{
7349	/* deassociate from this machine */
7350	hd->setMachineId (Guid());
7351	Log3 (("FR: %ls deassociated\n", hd->toString().raw()));
7352	break;
7353	}
7354	case HardDiskType_NormalHardDisk:
7355	{
7356	if (hd->snapshotId().isEmpty())
7357	{
7358	/* deassociate from this machine */
7359	hd->setMachineId (Guid());
7360	Log3 (("FR: %ls deassociated\n", hd->toString().raw()));
7361	}
7362	else
7363	{
7364	/* decrease readers increased in AttachHardDisk() */
7365	hd->releaseReader();
7366	Log3 (("FR: %ls released\n", hd->toString().raw()));
7367	}
7368
7369	break;
7370	}
7371	}
7372	}
7373	}
7374
7375	/* rollback all the changes */
7376	mHDData.rollback();
7377	Log3 (("FR: ROLLED BACK\n"));
7378
7379	return S_OK;
7380	}
7381
7382	/**
7383	* Creates differencing hard disks for all normal hard disks
7384	* and replaces attachments to refer to created disks.
7385	* Used when taking a snapshot or when discarding the current state.
7386	*
7387	* @param aSnapshotId ID of the snapshot being taken
7388	* or NULL if the current state is being discarded
7389	* @param aFolder folder where to create diff. hard disks
7390	* @param aProgress progress object to run (must contain at least as
7391	* many operations left as the number of VDIs attached)
7392	* @param aOnline whether the machine is online (i.e., when the EMT
7393	* thread is paused, OR when current hard disks are
7394	* marked as busy for some other reason)
7395	*
7396	* @note
7397	* The progress object is not marked as completed, neither on success
7398	* nor on failure. This is a responsibility of the caller.
7399	*
7400	* @note Locks mParent + this object for writing
7401	*/
7402	HRESULT Machine::createSnapshotDiffs (const Guid *aSnapshotId,
7403	const Bstr &aFolder,
7404	const ComObjPtr <Progress> &aProgress,
7405	bool aOnline)
7406	{
7407	AssertReturn (!aFolder.isEmpty(), E_FAIL);
7408
7409	AutoCaller autoCaller (this);
7410	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7411
7412	/* accessing mParent methods below needs mParent lock */
7413	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7414
7415	HRESULT rc = S_OK;
7416
7417	// first pass: check accessibility before performing changes
7418	if (!aOnline)
7419	{
7420	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
7421	it != mHDData->mHDAttachments.end();
7422	++ it)
7423	{
7424	ComObjPtr <HardDiskAttachment> hda = *it;
7425	ComObjPtr <HardDisk> hd = hda->hardDisk();
7426	AutoLock hdLock (hd);
7427
7428	ComAssertMsgBreak (hd->type() == HardDiskType_NormalHardDisk,
7429	("Invalid hard disk type %d\n", hd->type()),
7430	rc = E_FAIL);
7431
7432	ComAssertMsgBreak (!hd->isParentImmutable() \|\|
7433	hd->storageType() == HardDiskStorageType_VirtualDiskImage,
7434	("Invalid hard disk storage type %d\n", hd->storageType()),
7435	rc = E_FAIL);
7436
7437	Bstr accessError;
7438	rc = hd->getAccessible (accessError);
7439	CheckComRCBreakRC (rc);
7440
7441	if (!accessError.isNull())
7442	{
7443	rc = setError (E_FAIL,
7444	tr ("Hard disk '%ls' is not accessible (%ls)"),
7445	hd->toString().raw(), accessError.raw());
7446	break;
7447	}
7448	}
7449	CheckComRCReturnRC (rc);
7450	}
7451
7452	HDData::HDAttachmentList attachments;
7453
7454	// second pass: perform changes
7455	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
7456	it != mHDData->mHDAttachments.end();
7457	++ it)
7458	{
7459	ComObjPtr <HardDiskAttachment> hda = *it;
7460	ComObjPtr <HardDisk> hd = hda->hardDisk();
7461	AutoLock hdLock (hd);
7462
7463	ComObjPtr <HardDisk> parent = hd->parent();
7464	AutoLock parentHdLock (parent);
7465
7466	ComObjPtr <HardDisk> newHd;
7467
7468	// clear busy flag if the VM is online
7469	if (aOnline)
7470	hd->clearBusy();
7471	// increase readers
7472	hd->addReader();
7473
7474	if (hd->isParentImmutable())
7475	{
7476	aProgress->advanceOperation (Bstr (Utf8StrFmt (
7477	tr ("Preserving immutable hard disk '%ls'"),
7478	parent->toString (true /* aShort */).raw())));
7479
7480	parentHdLock.unlock();
7481	alock.leave();
7482
7483	// create a copy of the independent diff
7484	ComObjPtr <HVirtualDiskImage> vdi;
7485	rc = hd->asVDI()->cloneDiffImage (aFolder, mData->mUuid, vdi,
7486	aProgress);
7487	newHd = vdi;
7488
7489	alock.enter();
7490	parentHdLock.lock();
7491
7492	// decrease readers (hd is no more used for reading in any case)
7493	hd->releaseReader();
7494	}
7495	else
7496	{
7497	// checked in the first pass
7498	Assert (hd->type() == HardDiskType_NormalHardDisk);
7499
7500	aProgress->advanceOperation (Bstr (Utf8StrFmt (
7501	tr ("Creating a differencing hard disk for '%ls'"),
7502	hd->root()->toString (true /* aShort */).raw())));
7503
7504	parentHdLock.unlock();
7505	alock.leave();
7506
7507	// create a new diff for the image being attached
7508	ComObjPtr <HVirtualDiskImage> vdi;
7509	rc = hd->createDiffHardDisk (aFolder, mData->mUuid, vdi, aProgress);
7510	newHd = vdi;
7511
7512	alock.enter();
7513	parentHdLock.lock();
7514
7515	if (SUCCEEDED (rc))
7516	{
7517	// if online, hd must keep a reader referece
7518	if (!aOnline)
7519	hd->releaseReader();
7520	}
7521	else
7522	{
7523	// decrease readers
7524	hd->releaseReader();
7525	}
7526	}
7527
7528	if (SUCCEEDED (rc))
7529	{
7530	ComObjPtr <HardDiskAttachment> newHda;
7531	newHda.createObject();
7532	rc = newHda->init (newHd, hda->controller(), hda->deviceNumber(),
7533	false /* aDirty */);
7534
7535	if (SUCCEEDED (rc))
7536	{
7537	// associate the snapshot id with the old hard disk
7538	if (hd->type() != HardDiskType_WritethroughHardDisk && aSnapshotId)
7539	hd->setSnapshotId (*aSnapshotId);
7540
7541	// add the new attachment
7542	attachments.push_back (newHda);
7543
7544	// if online, newHd must be marked as busy
7545	if (aOnline)
7546	newHd->setBusy();
7547	}
7548	}
7549
7550	if (FAILED (rc))
7551	{
7552	// set busy flag back if the VM is online
7553	if (aOnline)
7554	hd->setBusy();
7555	break;
7556	}
7557	}
7558
7559	if (SUCCEEDED (rc))
7560	{
7561	// replace the whole list of attachments with the new one
7562	mHDData->mHDAttachments = attachments;
7563	}
7564	else
7565	{
7566	// delete those diffs we've just created
7567	for (HDData::HDAttachmentList::const_iterator it = attachments.begin();
7568	it != attachments.end();
7569	++ it)
7570	{
7571	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
7572	AutoLock hdLock (hd);
7573	Assert (hd->children().size() == 0);
7574	Assert (hd->isDifferencing());
7575	// unregisterDiffHardDisk() is supposed to delete and uninit
7576	// the differencing hard disk
7577	mParent->unregisterDiffHardDisk (hd);
7578	}
7579	}
7580
7581	return rc;
7582	}
7583
7584	/**
7585	* Deletes differencing hard disks created by createSnapshotDiffs() in case
7586	* if snapshot creation was failed.
7587	*
7588	* @param aSnapshot failed snapshot
7589	*
7590	* @note Locks mParent + this object for writing.
7591	*/
7592	HRESULT Machine::deleteSnapshotDiffs (const ComObjPtr <Snapshot> &aSnapshot)
7593	{
7594	AssertReturn (!aSnapshot.isNull(), E_FAIL);
7595
7596	AutoCaller autoCaller (this);
7597	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7598
7599	/* accessing mParent methods below needs mParent lock */
7600	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
7601
7602	/* short cut: check whether attachments are all the same */
7603	if (mHDData->mHDAttachments == aSnapshot->data().mMachine->mHDData->mHDAttachments)
7604	return S_OK;
7605
7606	HRESULT rc = S_OK;
7607
7608	for (HDData::HDAttachmentList::const_iterator it = mHDData->mHDAttachments.begin();
7609	it != mHDData->mHDAttachments.end();
7610	++ it)
7611	{
7612	ComObjPtr <HardDiskAttachment> hda = *it;
7613	ComObjPtr <HardDisk> hd = hda->hardDisk();
7614	AutoLock hdLock (hd);
7615
7616	ComObjPtr <HardDisk> parent = hd->parent();
7617	AutoLock parentHdLock (parent);
7618
7619	if (!parent \|\| parent->snapshotId() != aSnapshot->data().mId)
7620	continue;
7621
7622	/* must not have children */
7623	ComAssertRet (hd->children().size() == 0, E_FAIL);
7624
7625	/* deassociate the old hard disk from the given snapshot's ID */
7626	parent->setSnapshotId (Guid());
7627
7628	/* unregisterDiffHardDisk() is supposed to delete and uninit
7629	* the differencing hard disk */
7630	rc = mParent->unregisterDiffHardDisk (hd);
7631	/* continue on error */
7632	}
7633
7634	/* restore the whole list of attachments from the failed snapshot */
7635	mHDData->mHDAttachments = aSnapshot->data().mMachine->mHDData->mHDAttachments;
7636
7637	return rc;
7638	}
7639
7640	/**
7641	* Helper to lock the machine configuration for write access.
7642	*
7643	* @return S_OK or E_FAIL and sets error info on failure
7644	*
7645	* @note Doesn't lock anything (must be called from this object's lock)
7646	*/
7647	HRESULT Machine::lockConfig()
7648	{
7649	HRESULT rc = S_OK;
7650
7651	if (!isConfigLocked())
7652	{
7653	/* open the associated config file */
7654	int vrc = RTFileOpen (&mData->mHandleCfgFile,
7655	Utf8Str (mData->mConfigFileFull),
7656	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
7657	RTFILE_O_DENY_WRITE);
7658	if (VBOX_FAILURE (vrc))
7659	mData->mHandleCfgFile = NIL_RTFILE;
7660	}
7661
7662	LogFlowThisFunc (("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
7663	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
7664	return rc;
7665	}
7666
7667	/**
7668	* Helper to unlock the machine configuration from write access
7669	*
7670	* @return S_OK
7671	*
7672	* @note Doesn't lock anything.
7673	* @note Not thread safe (must be called from this object's lock).
7674	*/
7675	HRESULT Machine::unlockConfig()
7676	{
7677	HRESULT rc = S_OK;
7678
7679	if (isConfigLocked())
7680	{
7681	RTFileFlush(mData->mHandleCfgFile);
7682	RTFileClose(mData->mHandleCfgFile);
7683	/** @todo flush the directory. */
7684	mData->mHandleCfgFile = NIL_RTFILE;
7685	}
7686
7687	LogFlowThisFunc (("\n"));
7688
7689	return rc;
7690	}
7691
7692	/**
7693	* Returns true if the settings file is located in the directory named exactly
7694	* as the machine. This will be true if the machine settings structure was
7695	* created by default in #openConfigLoader().
7696	*
7697	* @param aSettingsDir if not NULL, the full machine settings file directory
7698	* name will be assigned there.
7699	*
7700	* @note Doesn't lock anything.
7701	* @note Not thread safe (must be called from this object's lock).
7702	*/
7703	bool Machine::isInOwnDir (Utf8Str aSettingsDir / = NULL */)
7704	{
7705	Utf8Str settingsDir = mData->mConfigFileFull;
7706	RTPathStripFilename (settingsDir.mutableRaw());
7707	char *dirName = RTPathFilename (settingsDir);
7708
7709	AssertReturn (dirName, false);
7710
7711	/* if we don't rename anything on name change, return false shorlty */
7712	if (!mUserData->mNameSync)
7713	return false;
7714
7715	if (aSettingsDir)
7716	*aSettingsDir = settingsDir;
7717
7718	return Bstr (dirName) == mUserData->mName;
7719	}
7720
7721	/**
7722	* @note Locks objects for reading!
7723	*/
7724	bool Machine::isModified()
7725	{
7726	AutoCaller autoCaller (this);
7727	AssertComRCReturn (autoCaller.rc(), false);
7728
7729	AutoReaderLock alock (this);
7730
7731	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
7732	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
7733	return true;
7734
7735	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
7736	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
7737	return true;
7738
7739	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
7740	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
7741	return true;
7742
7743	return
7744	mUserData.isBackedUp() \|\|
7745	mHWData.isBackedUp() \|\|
7746	mHDData.isBackedUp() \|\|
7747	#ifdef VBOX_VRDP
7748	(mVRDPServer && mVRDPServer->isModified()) \|\|
7749	#endif
7750	(mDVDDrive && mDVDDrive->isModified()) \|\|
7751	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
7752	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
7753	(mUSBController && mUSBController->isModified()) \|\|
7754	(mBIOSSettings && mBIOSSettings->isModified());
7755	}
7756
7757	/**
7758	* @note This method doesn't check (ignores) actual changes to mHDData.
7759	* Use mHDData.mHDAttachmentsChanged right after #commit() instead.
7760	*
7761	* @param aIgnoreUserData \|true\| to ignore changes to mUserData
7762	*
7763	* @note Locks objects for reading!
7764	*/
7765	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
7766	{
7767	AutoCaller autoCaller (this);
7768	AssertComRCReturn (autoCaller.rc(), false);
7769
7770	AutoReaderLock alock (this);
7771
7772	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
7773	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
7774	return true;
7775
7776	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
7777	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
7778	return true;
7779
7780	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
7781	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
7782	return true;
7783
7784	return
7785	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
7786	mHWData.hasActualChanges() \|\|
7787	/* ignore mHDData */
7788	//mHDData.hasActualChanges() \|\|
7789	#ifdef VBOX_VRDP
7790	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
7791	#endif
7792	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
7793	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
7794	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
7795	(mUSBController && mUSBController->isReallyModified()) \|\|
7796	(mBIOSSettings && mBIOSSettings->isReallyModified());
7797	}
7798
7799	/**
7800	* Discards all changes to machine settings.
7801	*
7802	* @param aNotify whether to notify the direct session about changes or not
7803	*
7804	* @note Locks objects!
7805	*/
7806	void Machine::rollback (bool aNotify)
7807	{
7808	AutoCaller autoCaller (this);
7809	AssertComRCReturn (autoCaller.rc(), (void) 0);
7810
7811	AutoLock alock (this);
7812
7813	/* check for changes in own data */
7814
7815	bool sharedFoldersChanged = false;
7816
7817	if (aNotify && mHWData.isBackedUp())
7818	{
7819	if (mHWData->mSharedFolders.size() !=
7820	mHWData.backedUpData()->mSharedFolders.size())
7821	sharedFoldersChanged = true;
7822	else
7823	{
7824	for (HWData::SharedFolderList::iterator rit =
7825	mHWData->mSharedFolders.begin();
7826	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
7827	++ rit)
7828	{
7829	for (HWData::SharedFolderList::iterator cit =
7830	mHWData.backedUpData()->mSharedFolders.begin();
7831	cit != mHWData.backedUpData()->mSharedFolders.end();
7832	++ cit)
7833	{
7834	if ((cit)->name() != (rit)->name() \|\|
7835	(cit)->hostPath() != (rit)->hostPath())
7836	{
7837	sharedFoldersChanged = true;
7838	break;
7839	}
7840	}
7841	}
7842	}
7843	}
7844
7845	mUserData.rollback();
7846
7847	mHWData.rollback();
7848
7849	if (mHDData.isBackedUp())
7850	fixupHardDisks (false /* aCommit */);
7851
7852	/* check for changes in child objects */
7853
7854	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
7855	usbChanged = false;
7856
7857	ComPtr <INetworkAdapter> networkAdapters [ELEMENTS (mNetworkAdapters)];
7858	ComPtr <ISerialPort> serialPorts [ELEMENTS (mSerialPorts)];
7859	ComPtr <IParallelPort> parallelPorts [ELEMENTS (mParallelPorts)];
7860
7861	if (mBIOSSettings)
7862	mBIOSSettings->rollback();
7863
7864	#ifdef VBOX_VRDP
7865	if (mVRDPServer)
7866	vrdpChanged = mVRDPServer->rollback();
7867	#endif
7868
7869	if (mDVDDrive)
7870	dvdChanged = mDVDDrive->rollback();
7871
7872	if (mFloppyDrive)
7873	floppyChanged = mFloppyDrive->rollback();
7874
7875	if (mAudioAdapter)
7876	mAudioAdapter->rollback();
7877
7878	if (mUSBController)
7879	usbChanged = mUSBController->rollback();
7880
7881	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
7882	if (mNetworkAdapters [slot])
7883	if (mNetworkAdapters [slot]->rollback())
7884	networkAdapters [slot] = mNetworkAdapters [slot];
7885
7886	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
7887	if (mSerialPorts [slot])
7888	if (mSerialPorts [slot]->rollback())
7889	serialPorts [slot] = mSerialPorts [slot];
7890
7891	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
7892	if (mParallelPorts [slot])
7893	if (mParallelPorts [slot]->rollback())
7894	parallelPorts [slot] = mParallelPorts [slot];
7895
7896	if (aNotify)
7897	{
7898	/* inform the direct session about changes */
7899
7900	ComObjPtr <Machine> that = this;
7901	alock.leave();
7902
7903	if (sharedFoldersChanged)
7904	that->onSharedFolderChange();
7905
7906	if (vrdpChanged)
7907	that->onVRDPServerChange();
7908	if (dvdChanged)
7909	that->onDVDDriveChange();
7910	if (floppyChanged)
7911	that->onFloppyDriveChange();
7912	if (usbChanged)
7913	that->onUSBControllerChange();
7914
7915	for (ULONG slot = 0; slot < ELEMENTS (networkAdapters); slot ++)
7916	if (networkAdapters [slot])
7917	that->onNetworkAdapterChange (networkAdapters [slot]);
7918	for (ULONG slot = 0; slot < ELEMENTS (serialPorts); slot ++)
7919	if (serialPorts [slot])
7920	that->onSerialPortChange (serialPorts [slot]);
7921	for (ULONG slot = 0; slot < ELEMENTS (parallelPorts); slot ++)
7922	if (parallelPorts [slot])
7923	that->onParallelPortChange (parallelPorts [slot]);
7924	}
7925	}
7926
7927	/**
7928	* Commits all the changes to machine settings.
7929	*
7930	* Note that when committing fails at some stage, it still continues
7931	* until the end. So, all data will either be actually committed or rolled
7932	* back (for failed cases) and the returned result code will describe the
7933	* first failure encountered. However, #isModified() will still return true
7934	* in case of failure, to indicade that settings in memory and on disk are
7935	* out of sync.
7936	*
7937	* @note Locks objects!
7938	*/
7939	HRESULT Machine::commit()
7940	{
7941	AutoCaller autoCaller (this);
7942	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7943
7944	AutoLock alock (this);
7945
7946	HRESULT rc = S_OK;
7947
7948	/*
7949	* use safe commit to ensure Snapshot machines (that share mUserData)
7950	* will still refer to a valid memory location
7951	*/
7952	mUserData.commitCopy();
7953
7954	mHWData.commit();
7955
7956	if (mHDData.isBackedUp())
7957	rc = fixupHardDisks (true /* aCommit */);
7958
7959	mBIOSSettings->commit();
7960	#ifdef VBOX_VRDP
7961	mVRDPServer->commit();
7962	#endif
7963	mDVDDrive->commit();
7964	mFloppyDrive->commit();
7965	mAudioAdapter->commit();
7966	mUSBController->commit();
7967
7968	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
7969	mNetworkAdapters [slot]->commit();
7970	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
7971	mSerialPorts [slot]->commit();
7972	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
7973	mParallelPorts [slot]->commit();
7974
7975	if (mType == IsSessionMachine)
7976	{
7977	/* attach new data to the primary machine and reshare it */
7978	mPeer->mUserData.attach (mUserData);
7979	mPeer->mHWData.attach (mHWData);
7980	mPeer->mHDData.attach (mHDData);
7981	}
7982
7983	if (FAILED (rc))
7984	{
7985	/*
7986	* backup arbitrary data item to cause #isModified() to still return
7987	* true in case of any error
7988	*/
7989	mHWData.backup();
7990	}
7991
7992	return rc;
7993	}
7994
7995	/**
7996	* Copies all the hardware data from the given machine.
7997	*
7998	* @note
7999	* This method must be called from under this object's lock.
8000	* @note
8001	* This method doesn't call #commit(), so all data remains backed up
8002	* and unsaved.
8003	*/
8004	void Machine::copyFrom (Machine *aThat)
8005	{
8006	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, (void) 0);
8007	AssertReturn (aThat->mType == IsSnapshotMachine, (void) 0);
8008
8009	mHWData.assignCopy (aThat->mHWData);
8010
8011	// create copies of all shared folders (mHWData after attiching a copy
8012	// contains just references to original objects)
8013	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
8014	it != mHWData->mSharedFolders.end();
8015	++ it)
8016	{
8017	ComObjPtr <SharedFolder> folder;
8018	folder.createObject();
8019	HRESULT rc = folder->initCopy (machine(), *it);
8020	AssertComRC (rc);
8021	*it = folder;
8022	}
8023
8024	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
8025	#ifdef VBOX_VRDP
8026	mVRDPServer->copyFrom (aThat->mVRDPServer);
8027	#endif
8028	mDVDDrive->copyFrom (aThat->mDVDDrive);
8029	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
8030	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
8031	mUSBController->copyFrom (aThat->mUSBController);
8032
8033	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
8034	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
8035	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
8036	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
8037	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
8038	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
8039	}
8040
8041	/////////////////////////////////////////////////////////////////////////////
8042	// SessionMachine class
8043	/////////////////////////////////////////////////////////////////////////////
8044
8045	/** Task structure for asynchronous VM operations */
8046	struct SessionMachine::Task
8047	{
8048	Task (SessionMachine m, Progress p)
8049	: machine (m), progress (p)
8050	, state (m->mData->mMachineState) // save the current machine state
8051	, subTask (false), settingsChanged (false)
8052	{}
8053
8054	void modifyLastState (MachineState_T s)
8055	{
8056	const_cast <MachineState_T > (&state) = s;
8057	}
8058
8059	virtual void handler() = 0;
8060
8061	const ComObjPtr <SessionMachine> machine;
8062	const ComObjPtr <Progress> progress;
8063	const MachineState_T state;
8064
8065	bool subTask : 1;
8066	bool settingsChanged : 1;
8067	};
8068
8069	/** Take snapshot task */
8070	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
8071	{
8072	TakeSnapshotTask (SessionMachine *m)
8073	: Task (m, NULL) {}
8074
8075	void handler() { machine->takeSnapshotHandler (*this); }
8076	};
8077
8078	/** Discard snapshot task */
8079	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
8080	{
8081	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
8082	: Task (m, p)
8083	, snapshot (s) {}
8084
8085	DiscardSnapshotTask (const Task &task, Snapshot *s)
8086	: Task (task)
8087	, snapshot (s) {}
8088
8089	void handler() { machine->discardSnapshotHandler (*this); }
8090
8091	const ComObjPtr <Snapshot> snapshot;
8092	};
8093
8094	/** Discard current state task */
8095	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
8096	{
8097	DiscardCurrentStateTask (SessionMachine m, Progress p,
8098	bool discardCurSnapshot)
8099	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
8100
8101	void handler() { machine->discardCurrentStateHandler (*this); }
8102
8103	const bool discardCurrentSnapshot;
8104	};
8105
8106	////////////////////////////////////////////////////////////////////////////////
8107
8108	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
8109
8110	HRESULT SessionMachine::FinalConstruct()
8111	{
8112	LogFlowThisFunc (("\n"));
8113
8114	/* set the proper type to indicate we're the SessionMachine instance */
8115	unconst (mType) = IsSessionMachine;
8116
8117	#if defined(RT_OS_WINDOWS)
8118	mIPCSem = NULL;
8119	#elif defined(RT_OS_OS2)
8120	mIPCSem = NULLHANDLE;
8121	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8122	mIPCSem = -1;
8123	#else
8124	# error "Port me!"
8125	#endif
8126
8127	return S_OK;
8128	}
8129
8130	void SessionMachine::FinalRelease()
8131	{
8132	LogFlowThisFunc (("\n"));
8133
8134	uninit (Uninit::Unexpected);
8135	}
8136
8137	/**
8138	* @note Must be called only by Machine::openSession() from its own write lock.
8139	*/
8140	HRESULT SessionMachine::init (Machine *aMachine)
8141	{
8142	LogFlowThisFuncEnter();
8143	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
8144
8145	AssertReturn (aMachine, E_INVALIDARG);
8146
8147	AssertReturn (aMachine->lockHandle()->isLockedOnCurrentThread(), E_FAIL);
8148
8149	/* Enclose the state transition NotReady->InInit->Ready */
8150	AutoInitSpan autoInitSpan (this);
8151	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
8152
8153	/* create the interprocess semaphore */
8154	#if defined(RT_OS_WINDOWS)
8155	mIPCSemName = aMachine->mData->mConfigFileFull;
8156	for (size_t i = 0; i < mIPCSemName.length(); i++)
8157	if (mIPCSemName[i] == '\\')
8158	mIPCSemName[i] = '/';
8159	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
8160	ComAssertMsgRet (mIPCSem,
8161	("Cannot create IPC mutex '%ls', err=%d\n",
8162	mIPCSemName.raw(), ::GetLastError()),
8163	E_FAIL);
8164	#elif defined(RT_OS_OS2)
8165	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%Vuuid}",
8166	aMachine->mData->mUuid.raw());
8167	mIPCSemName = ipcSem;
8168	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
8169	ComAssertMsgRet (arc == NO_ERROR,
8170	("Cannot create IPC mutex '%s', arc=%ld\n",
8171	ipcSem.raw(), arc),
8172	E_FAIL);
8173	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8174	Utf8Str configFile = aMachine->mData->mConfigFileFull;
8175	char *configFileCP = NULL;
8176	RTStrUtf8ToCurrentCP (&configFileCP, configFile);
8177	key_t key = ::ftok (configFileCP, 0);
8178	RTStrFree (configFileCP);
8179	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
8180	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errno),
8181	E_FAIL);
8182	/* set the initial value to 1 */
8183	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
8184	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
8185	E_FAIL);
8186	#else
8187	# error "Port me!"
8188	#endif
8189
8190	/* memorize the peer Machine */
8191	unconst (mPeer) = aMachine;
8192	/* share the parent pointer */
8193	unconst (mParent) = aMachine->mParent;
8194
8195	/* take the pointers to data to share */
8196	mData.share (aMachine->mData);
8197	mSSData.share (aMachine->mSSData);
8198
8199	mUserData.share (aMachine->mUserData);
8200	mHWData.share (aMachine->mHWData);
8201	mHDData.share (aMachine->mHDData);
8202
8203	unconst (mBIOSSettings).createObject();
8204	mBIOSSettings->init (this, aMachine->mBIOSSettings);
8205	#ifdef VBOX_VRDP
8206	/* create another VRDPServer object that will be mutable */
8207	unconst (mVRDPServer).createObject();
8208	mVRDPServer->init (this, aMachine->mVRDPServer);
8209	#endif
8210	/* create another DVD drive object that will be mutable */
8211	unconst (mDVDDrive).createObject();
8212	mDVDDrive->init (this, aMachine->mDVDDrive);
8213	/* create another floppy drive object that will be mutable */
8214	unconst (mFloppyDrive).createObject();
8215	mFloppyDrive->init (this, aMachine->mFloppyDrive);
8216	/* create another audio adapter object that will be mutable */
8217	unconst (mAudioAdapter).createObject();
8218	mAudioAdapter->init (this, aMachine->mAudioAdapter);
8219	/* create a list of serial ports that will be mutable */
8220	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
8221	{
8222	unconst (mSerialPorts [slot]).createObject();
8223	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
8224	}
8225	/* create a list of parallel ports that will be mutable */
8226	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
8227	{
8228	unconst (mParallelPorts [slot]).createObject();
8229	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
8230	}
8231	/* create another USB controller object that will be mutable */
8232	unconst (mUSBController).createObject();
8233	mUSBController->init (this, aMachine->mUSBController);
8234	/* create a list of network adapters that will be mutable */
8235	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
8236	{
8237	unconst (mNetworkAdapters [slot]).createObject();
8238	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
8239	}
8240
8241	/* Confirm a successful initialization when it's the case */
8242	autoInitSpan.setSucceeded();
8243
8244	LogFlowThisFuncLeave();
8245	return S_OK;
8246	}
8247
8248	/**
8249	* Uninitializes this session object. If the reason is other than
8250	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
8251	*
8252	* @param aReason uninitialization reason
8253	*
8254	* @note Locks mParent + this object for writing.
8255	*/
8256	void SessionMachine::uninit (Uninit::Reason aReason)
8257	{
8258	LogFlowThisFuncEnter();
8259	LogFlowThisFunc (("reason=%d\n", aReason));
8260
8261	/*
8262	* Strongly reference ourselves to prevent this object deletion after
8263	* mData->mSession.mMachine.setNull() below (which can release the last
8264	* reference and call the destructor). Important: this must be done before
8265	* accessing any members (and before AutoUninitSpan that does it as well).
8266	* This self reference will be released as the very last step on return.
8267	*/
8268	ComObjPtr <SessionMachine> selfRef = this;
8269
8270	/* Enclose the state transition Ready->InUninit->NotReady */
8271	AutoUninitSpan autoUninitSpan (this);
8272	if (autoUninitSpan.uninitDone())
8273	{
8274	LogFlowThisFunc (("Already uninitialized\n"));
8275	LogFlowThisFuncLeave();
8276	return;
8277	}
8278
8279	if (autoUninitSpan.initFailed())
8280	{
8281	/*
8282	* We've been called by init() because it's failed. It's not really
8283	* necessary (nor it's safe) to perform the regular uninit sequence
8284	* below, the following is enough.
8285	*/
8286	LogFlowThisFunc (("Initialization failed.\n"));
8287	#if defined(RT_OS_WINDOWS)
8288	if (mIPCSem)
8289	::CloseHandle (mIPCSem);
8290	mIPCSem = NULL;
8291	#elif defined(RT_OS_OS2)
8292	if (mIPCSem != NULLHANDLE)
8293	::DosCloseMutexSem (mIPCSem);
8294	mIPCSem = NULLHANDLE;
8295	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8296	if (mIPCSem >= 0)
8297	::semctl (mIPCSem, 0, IPC_RMID);
8298	mIPCSem = -1;
8299	#else
8300	# error "Port me!"
8301	#endif
8302	uninitDataAndChildObjects();
8303	mData.free();
8304	unconst (mParent).setNull();
8305	unconst (mPeer).setNull();
8306	LogFlowThisFuncLeave();
8307	return;
8308	}
8309
8310	/*
8311	* We need to lock this object in uninit() because the lock is shared
8312	* with mPeer (as well as data we modify below).
8313	* mParent->addProcessToReap() and others need mParent lock.
8314	*/
8315	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8316
8317	MachineState_T lastState = mData->mMachineState;
8318
8319	if (aReason == Uninit::Abnormal)
8320	{
8321	LogWarningThisFunc (("ABNORMAL client termination! (wasRunning=%d)\n",
8322	lastState >= MachineState_Running));
8323
8324	/* reset the state to Aborted */
8325	if (mData->mMachineState != MachineState_Aborted)
8326	setMachineState (MachineState_Aborted);
8327	}
8328
8329	if (isModified())
8330	{
8331	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
8332	rollback (false /* aNotify */);
8333	}
8334
8335	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
8336	if (mSnapshotData.mStateFilePath)
8337	{
8338	LogWarningThisFunc (("canceling failed save state request!\n"));
8339	endSavingState (FALSE /* aSuccess */);
8340	}
8341	else if (!!mSnapshotData.mSnapshot)
8342	{
8343	LogWarningThisFunc (("canceling untaken snapshot!\n"));
8344	endTakingSnapshot (FALSE /* aSuccess */);
8345	}
8346
8347	/* release all captured USB devices */
8348	if (aReason == Uninit::Abnormal && lastState >= MachineState_Running)
8349	{
8350	/* Console::captureUSBDevices() is called in the VM process only after
8351	* setting the machine state to Starting or Restoring.
8352	* Console::detachAllUSBDevices() will be called upon successful
8353	* termination. So, we need to release USB devices only if there was
8354	* an abnormal termination of a running VM. */
8355	DetachAllUSBDevices (TRUE /* aDone */);
8356	}
8357
8358	if (!mData->mSession.mType.isNull())
8359	{
8360	/* mType is not null when this machine's process has been started by
8361	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
8362	* need to queue the PID to reap the process (and avoid zombies on
8363	* Linux). */
8364	Assert (mData->mSession.mPid != NIL_RTPROCESS);
8365	mParent->addProcessToReap (mData->mSession.mPid);
8366	}
8367
8368	mData->mSession.mPid = NIL_RTPROCESS;
8369
8370	if (aReason == Uninit::Unexpected)
8371	{
8372	/* Uninitialization didn't come from #checkForDeath(), so tell the
8373	* client watcher thread to update the set of machines that have open
8374	* sessions. */
8375	mParent->updateClientWatcher();
8376	}
8377
8378	/* uninitialize all remote controls */
8379	if (mData->mSession.mRemoteControls.size())
8380	{
8381	LogFlowThisFunc (("Closing remote sessions (%d):\n",
8382	mData->mSession.mRemoteControls.size()));
8383
8384	Data::Session::RemoteControlList::iterator it =
8385	mData->mSession.mRemoteControls.begin();
8386	while (it != mData->mSession.mRemoteControls.end())
8387	{
8388	LogFlowThisFunc ((" Calling remoteControl->Uninitialize()...\n"));
8389	HRESULT rc = (*it)->Uninitialize();
8390	LogFlowThisFunc ((" remoteControl->Uninitialize() returned %08X\n", rc));
8391	if (FAILED (rc))
8392	LogWarningThisFunc (("Forgot to close the remote session?\n"));
8393	++ it;
8394	}
8395	mData->mSession.mRemoteControls.clear();
8396	}
8397
8398	/*
8399	* An expected uninitialization can come only from #checkForDeath().
8400	* Otherwise it means that something's got really wrong (for examlple,
8401	* the Session implementation has released the VirtualBox reference
8402	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
8403	* etc). However, it's also possible, that the client releases the IPC
8404	* semaphore correctly (i.e. before it releases the VirtualBox reference),
8405	* but but the VirtualBox release event comes first to the server process.
8406	* This case is practically possible, so we should not assert on an
8407	* unexpected uninit, just log a warning.
8408	*/
8409
8410	if ((aReason == Uninit::Unexpected))
8411	LogWarningThisFunc (("Unexpected SessionMachine uninitialization!\n"));
8412
8413	if (aReason != Uninit::Normal)
8414	mData->mSession.mDirectControl.setNull();
8415	else
8416	{
8417	/* this must be null here (see #OnSessionEnd()) */
8418	Assert (mData->mSession.mDirectControl.isNull());
8419	Assert (mData->mSession.mState == SessionState_SessionClosing);
8420	Assert (!mData->mSession.mProgress.isNull());
8421
8422	mData->mSession.mProgress->notifyComplete (S_OK);
8423	mData->mSession.mProgress.setNull();
8424	}
8425
8426	/* remove the association between the peer machine and this session machine */
8427	Assert (mData->mSession.mMachine == this \|\|
8428	aReason == Uninit::Unexpected);
8429
8430	/* reset the rest of session data */
8431	mData->mSession.mMachine.setNull();
8432	mData->mSession.mState = SessionState_SessionClosed;
8433	mData->mSession.mType.setNull();
8434
8435	/* close the interprocess semaphore before leaving the shared lock */
8436	#if defined(RT_OS_WINDOWS)
8437	if (mIPCSem)
8438	::CloseHandle (mIPCSem);
8439	mIPCSem = NULL;
8440	#elif defined(RT_OS_OS2)
8441	if (mIPCSem != NULLHANDLE)
8442	::DosCloseMutexSem (mIPCSem);
8443	mIPCSem = NULLHANDLE;
8444	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8445	if (mIPCSem >= 0)
8446	::semctl (mIPCSem, 0, IPC_RMID);
8447	mIPCSem = -1;
8448	#else
8449	# error "Port me!"
8450	#endif
8451
8452	/* fire an event */
8453	mParent->onSessionStateChange (mData->mUuid, SessionState_SessionClosed);
8454
8455	uninitDataAndChildObjects();
8456
8457	/* free the essential data structure last */
8458	mData.free();
8459
8460	/* leave the shared lock before setting the below two to NULL */
8461	alock.leave();
8462
8463	unconst (mParent).setNull();
8464	unconst (mPeer).setNull();
8465
8466	LogFlowThisFuncLeave();
8467	}
8468
8469	// AutoLock::Lockable interface
8470	////////////////////////////////////////////////////////////////////////////////
8471
8472	/**
8473	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
8474	* with the primary Machine instance (mPeer).
8475	*/
8476	AutoLock::Handle *SessionMachine::lockHandle() const
8477	{
8478	AssertReturn (!mPeer.isNull(), NULL);
8479	return mPeer->lockHandle();
8480	}
8481
8482	// IInternalMachineControl methods
8483	////////////////////////////////////////////////////////////////////////////////
8484
8485	/**
8486	* @note Locks the same as #setMachineState() does.
8487	*/
8488	STDMETHODIMP SessionMachine::UpdateState (MachineState_T machineState)
8489	{
8490	return setMachineState (machineState);
8491	}
8492
8493	/**
8494	* @note Locks this object for reading.
8495	*/
8496	STDMETHODIMP SessionMachine::GetIPCId (BSTR *id)
8497	{
8498	AutoCaller autoCaller (this);
8499	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8500
8501	AutoReaderLock alock (this);
8502
8503	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
8504	mIPCSemName.cloneTo (id);
8505	return S_OK;
8506	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8507	mData->mConfigFileFull.cloneTo (id);
8508	return S_OK;
8509	#else
8510	# error "Port me!"
8511	#endif
8512	}
8513
8514	/**
8515	* Goes through the USB filters of the given machine to see if the given
8516	* device matches any filter or not.
8517	*
8518	* @note Locks the same as USBController::hasMatchingFilter() does.
8519	*/
8520	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
8521	BOOL *aMatched,
8522	ULONG *aMaskedIfs)
8523	{
8524	LogFlowThisFunc (("\n"));
8525
8526	if (!aUSBDevice)
8527	return E_INVALIDARG;
8528	if (!aMatched)
8529	return E_POINTER;
8530
8531	AutoCaller autoCaller (this);
8532	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8533
8534	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
8535
8536	return S_OK;
8537	}
8538
8539	/**
8540	* @note Locks the same as Host::captureUSBDevice() does.
8541	*/
8542	STDMETHODIMP SessionMachine::CaptureUSBDevice (INPTR GUIDPARAM aId)
8543	{
8544	LogFlowThisFunc (("\n"));
8545
8546	AutoCaller autoCaller (this);
8547	AssertComRCReturnRC (autoCaller.rc());
8548
8549	/* if cautureUSBDevice() fails, it must have set extended error info */
8550	return mParent->host()->captureUSBDevice (this, aId);
8551	}
8552
8553	/**
8554	* @note Locks the same as Host::detachUSBDevice() does.
8555	*/
8556	STDMETHODIMP SessionMachine::DetachUSBDevice (INPTR GUIDPARAM aId, BOOL aDone)
8557	{
8558	LogFlowThisFunc (("\n"));
8559
8560	AutoCaller autoCaller (this);
8561	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8562
8563	return mParent->host()->detachUSBDevice (this, aId, aDone);
8564	}
8565
8566	/**
8567	* Inserts all machine filters to the USB proxy service and then calls
8568	* Host::autoCaptureUSBDevices().
8569	*
8570	* Called by Console from the VM process upon VM startup.
8571	*
8572	* @note Locks what called methods lock.
8573	*/
8574	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
8575	{
8576	LogFlowThisFunc (("\n"));
8577
8578	AutoCaller autoCaller (this);
8579	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8580
8581	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
8582	AssertComRC (rc);
8583	NOREF (rc);
8584
8585	return mParent->host()->autoCaptureUSBDevices (this);
8586	}
8587
8588	/**
8589	* Removes all machine filters from the USB proxy service and then calls
8590	* Host::detachAllUSBDevices().
8591	*
8592	* Called by Console from the VM process upon normal VM termination or by
8593	* SessionMachine::uninit() upon abnormal VM termination (from under the
8594	* Machine/SessionMachine lock).
8595	*
8596	* @note Locks what called methods lock.
8597	*/
8598	STDMETHODIMP SessionMachine::DetachAllUSBDevices(BOOL aDone)
8599	{
8600	LogFlowThisFunc (("\n"));
8601
8602	AutoCaller autoCaller (this);
8603	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8604
8605	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8606	AssertComRC (rc);
8607	NOREF (rc);
8608
8609	return mParent->host()->detachAllUSBDevices (this, aDone);
8610	}
8611
8612	/**
8613	* @note Locks mParent + this object for writing.
8614	*/
8615	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
8616	IProgress **aProgress)
8617	{
8618	LogFlowThisFuncEnter();
8619
8620	AssertReturn (aSession, E_INVALIDARG);
8621	AssertReturn (aProgress, E_INVALIDARG);
8622
8623	AutoCaller autoCaller (this);
8624
8625	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8626	/*
8627	* We don't assert below because it might happen that a non-direct session
8628	* informs us it is closed right after we've been uninitialized -- it's ok.
8629	*/
8630	CheckComRCReturnRC (autoCaller.rc());
8631
8632	/* get IInternalSessionControl interface */
8633	ComPtr <IInternalSessionControl> control (aSession);
8634
8635	ComAssertRet (!control.isNull(), E_INVALIDARG);
8636
8637	/* Progress::init() needs mParent lock */
8638	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8639
8640	if (control.equalsTo (mData->mSession.mDirectControl))
8641	{
8642	ComAssertRet (aProgress, E_POINTER);
8643
8644	/* The direct session is being normally closed by the client process
8645	* ----------------------------------------------------------------- */
8646
8647	/* go to the closing state (essential for all open*Session() calls and
8648	* for #checkForDeath()) */
8649	Assert (mData->mSession.mState == SessionState_SessionOpen);
8650	mData->mSession.mState = SessionState_SessionClosing;
8651
8652	/* set direct control to NULL to release the remote instance */
8653	mData->mSession.mDirectControl.setNull();
8654	LogFlowThisFunc (("Direct control is set to NULL\n"));
8655
8656	/*
8657	* Create the progress object the client will use to wait until
8658	* #checkForDeath() is called to uninitialize this session object
8659	* after it releases the IPC semaphore.
8660	*/
8661	ComObjPtr <Progress> progress;
8662	progress.createObject();
8663	progress->init (mParent, (IMachine *) mPeer, Bstr (tr ("Closing session")),
8664	FALSE /* aCancelable */);
8665	progress.queryInterfaceTo (aProgress);
8666	mData->mSession.mProgress = progress;
8667	}
8668	else
8669	{
8670	/* the remote session is being normally closed */
8671	Data::Session::RemoteControlList::iterator it =
8672	mData->mSession.mRemoteControls.begin();
8673	while (it != mData->mSession.mRemoteControls.end())
8674	{
8675	if (control.equalsTo (*it))
8676	break;
8677	++it;
8678	}
8679	BOOL found = it != mData->mSession.mRemoteControls.end();
8680	ComAssertMsgRet (found, ("The session is not found in the session list!"),
8681	E_INVALIDARG);
8682	mData->mSession.mRemoteControls.remove (*it);
8683	}
8684
8685	LogFlowThisFuncLeave();
8686	return S_OK;
8687	}
8688
8689	/**
8690	* @note Locks mParent + this object for writing.
8691	*/
8692	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
8693	{
8694	LogFlowThisFuncEnter();
8695
8696	AssertReturn (aProgress, E_INVALIDARG);
8697	AssertReturn (aStateFilePath, E_POINTER);
8698
8699	AutoCaller autoCaller (this);
8700	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8701
8702	/* mParent->addProgress() needs mParent lock */
8703	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8704
8705	AssertReturn (mData->mMachineState == MachineState_Paused &&
8706	mSnapshotData.mLastState == MachineState_InvalidMachineState &&
8707	mSnapshotData.mProgressId.isEmpty() &&
8708	mSnapshotData.mStateFilePath.isNull(),
8709	E_FAIL);
8710
8711	/* memorize the progress ID and add it to the global collection */
8712	Guid progressId;
8713	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
8714	AssertComRCReturn (rc, rc);
8715	rc = mParent->addProgress (aProgress);
8716	AssertComRCReturn (rc, rc);
8717
8718	Bstr stateFilePath;
8719	/* stateFilePath is null when the machine is not running */
8720	if (mData->mMachineState == MachineState_Paused)
8721	{
8722	stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
8723	mUserData->mSnapshotFolderFull.raw(),
8724	RTPATH_DELIMITER, mData->mUuid.raw());
8725	}
8726
8727	/* fill in the snapshot data */
8728	mSnapshotData.mLastState = mData->mMachineState;
8729	mSnapshotData.mProgressId = progressId;
8730	mSnapshotData.mStateFilePath = stateFilePath;
8731
8732	/* set the state to Saving (this is expected by Console::SaveState()) */
8733	setMachineState (MachineState_Saving);
8734
8735	stateFilePath.cloneTo (aStateFilePath);
8736
8737	return S_OK;
8738	}
8739
8740	/**
8741	* @note Locks mParent + this objects for writing.
8742	*/
8743	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
8744	{
8745	LogFlowThisFunc (("\n"));
8746
8747	AutoCaller autoCaller (this);
8748	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8749
8750	/* endSavingState() need mParent lock */
8751	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8752
8753	AssertReturn (mData->mMachineState == MachineState_Saving &&
8754	mSnapshotData.mLastState != MachineState_InvalidMachineState &&
8755	!mSnapshotData.mProgressId.isEmpty() &&
8756	!mSnapshotData.mStateFilePath.isNull(),
8757	E_FAIL);
8758
8759	/*
8760	* on success, set the state to Saved;
8761	* on failure, set the state to the state we had when BeginSavingState() was
8762	* called (this is expected by Console::SaveState() and
8763	* Console::saveStateThread())
8764	*/
8765	if (aSuccess)
8766	setMachineState (MachineState_Saved);
8767	else
8768	setMachineState (mSnapshotData.mLastState);
8769
8770	return endSavingState (aSuccess);
8771	}
8772
8773	/**
8774	* @note Locks this objects for writing.
8775	*/
8776	STDMETHODIMP SessionMachine::AdoptSavedState (INPTR BSTR aSavedStateFile)
8777	{
8778	LogFlowThisFunc (("\n"));
8779
8780	AssertReturn (aSavedStateFile, E_INVALIDARG);
8781
8782	AutoCaller autoCaller (this);
8783	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8784
8785	AutoLock alock (this);
8786
8787	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
8788	mData->mMachineState == MachineState_Aborted,
8789	E_FAIL);
8790
8791	Utf8Str stateFilePathFull = aSavedStateFile;
8792	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
8793	if (VBOX_FAILURE (vrc))
8794	return setError (E_FAIL,
8795	tr ("Invalid saved state file path: '%ls' (%Vrc)"),
8796	aSavedStateFile, vrc);
8797
8798	mSSData->mStateFilePath = stateFilePathFull;
8799
8800	/* The below setMachineState() will detect the state transition and will
8801	* update the settings file */
8802
8803	return setMachineState (MachineState_Saved);
8804	}
8805
8806	/**
8807	* @note Locks mParent + this objects for writing.
8808	*/
8809	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
8810	IConsole *aInitiator, INPTR BSTR aName, INPTR BSTR aDescription,
8811	IProgress aProgress, BSTR aStateFilePath,
8812	IProgress **aServerProgress)
8813	{
8814	LogFlowThisFuncEnter();
8815
8816	AssertReturn (aInitiator && aName, E_INVALIDARG);
8817	AssertReturn (aStateFilePath && aServerProgress, E_POINTER);
8818
8819	LogFlowThisFunc (("aName='%ls'\n", aName));
8820
8821	AutoCaller autoCaller (this);
8822	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8823
8824	/* Progress::init() needs mParent lock */
8825	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8826
8827	AssertReturn ((mData->mMachineState < MachineState_Running \|\|
8828	mData->mMachineState == MachineState_Paused) &&
8829	mSnapshotData.mLastState == MachineState_InvalidMachineState &&
8830	mSnapshotData.mSnapshot.isNull() &&
8831	mSnapshotData.mServerProgress.isNull() &&
8832	mSnapshotData.mCombinedProgress.isNull(),
8833	E_FAIL);
8834
8835	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
8836
8837	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
8838	{
8839	/*
8840	* save all current settings to ensure current changes are committed
8841	* and hard disks are fixed up
8842	*/
8843	HRESULT rc = saveSettings();
8844	CheckComRCReturnRC (rc);
8845	}
8846
8847	/* check that there are no Writethrough hard disks attached */
8848	for (HDData::HDAttachmentList::const_iterator
8849	it = mHDData->mHDAttachments.begin();
8850	it != mHDData->mHDAttachments.end();
8851	++ it)
8852	{
8853	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
8854	AutoLock hdLock (hd);
8855	if (hd->type() == HardDiskType_WritethroughHardDisk)
8856	return setError (E_FAIL,
8857	tr ("Cannot take a snapshot when there is a Writethrough hard "
8858	" disk attached ('%ls')"), hd->toString().raw());
8859	}
8860
8861	AssertReturn (aProgress \|\| !takingSnapshotOnline, E_FAIL);
8862
8863	/* create an ID for the snapshot */
8864	Guid snapshotId;
8865	snapshotId.create();
8866
8867	Bstr stateFilePath;
8868	/* stateFilePath is null when the machine is not online nor saved */
8869	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
8870	stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
8871	mUserData->mSnapshotFolderFull.raw(),
8872	RTPATH_DELIMITER,
8873	snapshotId.ptr());
8874
8875	/* ensure the directory for the saved state file exists */
8876	if (stateFilePath)
8877	{
8878	Utf8Str dir = stateFilePath;
8879	RTPathStripFilename (dir.mutableRaw());
8880	if (!RTDirExists (dir))
8881	{
8882	int vrc = RTDirCreateFullPath (dir, 0777);
8883	if (VBOX_FAILURE (vrc))
8884	return setError (E_FAIL,
8885	tr ("Could not create a directory '%s' to save the "
8886	"VM state to (%Vrc)"),
8887	dir.raw(), vrc);
8888	}
8889	}
8890
8891	/* create a snapshot machine object */
8892	ComObjPtr <SnapshotMachine> snapshotMachine;
8893	snapshotMachine.createObject();
8894	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
8895	AssertComRCReturn (rc, rc);
8896
8897	Bstr progressDesc = Bstr (tr ("Taking snapshot of virtual machine"));
8898	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
8899
8900	/*
8901	* create a server-side progress object (it will be descriptionless
8902	* when we need to combine it with the VM-side progress, i.e. when we're
8903	* taking a snapshot online). The number of operations is:
8904	* 1 (preparing) + # of VDIs + 1 (if the state is saved so we need to copy it)
8905	*/
8906	ComObjPtr <Progress> serverProgress;
8907	{
8908	ULONG opCount = 1 + mHDData->mHDAttachments.size();
8909	if (mData->mMachineState == MachineState_Saved)
8910	opCount ++;
8911	serverProgress.createObject();
8912	if (takingSnapshotOnline)
8913	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
8914	else
8915	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
8916	opCount, firstOpDesc);
8917	AssertComRCReturn (rc, rc);
8918	}
8919
8920	/* create a combined server-side progress object when necessary */
8921	ComObjPtr <CombinedProgress> combinedProgress;
8922	if (takingSnapshotOnline)
8923	{
8924	combinedProgress.createObject();
8925	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
8926	serverProgress, aProgress);
8927	AssertComRCReturn (rc, rc);
8928	}
8929
8930	/* create a snapshot object */
8931	RTTIMESPEC time;
8932	ComObjPtr <Snapshot> snapshot;
8933	snapshot.createObject();
8934	rc = snapshot->init (snapshotId, aName, aDescription,
8935	RTTimeSpecGetMilli (RTTimeNow (&time)),
8936	snapshotMachine, mData->mCurrentSnapshot);
8937	AssertComRCReturn (rc, rc);
8938
8939	/*
8940	* create and start the task on a separate thread
8941	* (note that it will not start working until we release alock)
8942	*/
8943	TakeSnapshotTask *task = new TakeSnapshotTask (this);
8944	int vrc = RTThreadCreate (NULL, taskHandler,
8945	(void *) task,
8946	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
8947	if (VBOX_FAILURE (vrc))
8948	{
8949	snapshot->uninit();
8950	delete task;
8951	ComAssertFailedRet (E_FAIL);
8952	}
8953
8954	/* fill in the snapshot data */
8955	mSnapshotData.mLastState = mData->mMachineState;
8956	mSnapshotData.mSnapshot = snapshot;
8957	mSnapshotData.mServerProgress = serverProgress;
8958	mSnapshotData.mCombinedProgress = combinedProgress;
8959
8960	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
8961	setMachineState (MachineState_Saving);
8962
8963	if (takingSnapshotOnline)
8964	stateFilePath.cloneTo (aStateFilePath);
8965	else
8966	*aStateFilePath = NULL;
8967
8968	serverProgress.queryInterfaceTo (aServerProgress);
8969
8970	LogFlowThisFuncLeave();
8971	return S_OK;
8972	}
8973
8974	/**
8975	* @note Locks mParent + this objects for writing.
8976	*/
8977	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
8978	{
8979	LogFlowThisFunc (("\n"));
8980
8981	AutoCaller autoCaller (this);
8982	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8983
8984	/* Lock mParent because of endTakingSnapshot() */
8985	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
8986
8987	AssertReturn (!aSuccess \|\|
8988	(mData->mMachineState == MachineState_Saving &&
8989	mSnapshotData.mLastState != MachineState_InvalidMachineState &&
8990	!mSnapshotData.mSnapshot.isNull() &&
8991	!mSnapshotData.mServerProgress.isNull() &&
8992	!mSnapshotData.mCombinedProgress.isNull()),
8993	E_FAIL);
8994
8995	/*
8996	* set the state to the state we had when BeginTakingSnapshot() was called
8997	* (this is expected by Console::TakeSnapshot() and
8998	* Console::saveStateThread())
8999	*/
9000	setMachineState (mSnapshotData.mLastState);
9001
9002	return endTakingSnapshot (aSuccess);
9003	}
9004
9005	/**
9006	* @note Locks mParent + this + children objects for writing!
9007	*/
9008	STDMETHODIMP SessionMachine::DiscardSnapshot (
9009	IConsole *aInitiator, INPTR GUIDPARAM aId,
9010	MachineState_T aMachineState, IProgress *aProgress)
9011	{
9012	LogFlowThisFunc (("\n"));
9013
9014	Guid id = aId;
9015	AssertReturn (aInitiator && !id.isEmpty(), E_INVALIDARG);
9016	AssertReturn (aMachineState && aProgress, E_POINTER);
9017
9018	AutoCaller autoCaller (this);
9019	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9020
9021	/* Progress::init() needs mParent lock */
9022	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9023
9024	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9025
9026	ComObjPtr <Snapshot> snapshot;
9027	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
9028	CheckComRCReturnRC (rc);
9029
9030	AutoLock snapshotLock (snapshot);
9031	if (snapshot == mData->mFirstSnapshot)
9032	{
9033	AutoLock chLock (mData->mFirstSnapshot->childrenLock());
9034	size_t childrenCount = mData->mFirstSnapshot->children().size();
9035	if (childrenCount > 1)
9036	return setError (E_FAIL,
9037	tr ("Cannot discard the snapshot '%ls' because it is the first "
9038	"snapshot of the machine '%ls' and it has more than one "
9039	"child snapshot (%d)"),
9040	snapshot->data().mName.raw(), mUserData->mName.raw(),
9041	childrenCount);
9042	}
9043
9044	/*
9045	* If the snapshot being discarded is the current one, ensure current
9046	* settings are committed and saved.
9047	*/
9048	if (snapshot == mData->mCurrentSnapshot)
9049	{
9050	if (isModified())
9051	{
9052	rc = saveSettings();
9053	CheckComRCReturnRC (rc);
9054	}
9055	}
9056
9057	/*
9058	* create a progress object. The number of operations is:
9059	* 1 (preparing) + # of VDIs
9060	*/
9061	ComObjPtr <Progress> progress;
9062	progress.createObject();
9063	rc = progress->init (mParent, aInitiator,
9064	Bstr (Utf8StrFmt (tr ("Discarding snapshot '%ls'"),
9065	snapshot->data().mName.raw())),
9066	FALSE /* aCancelable */,
9067	1 + snapshot->data().mMachine->mHDData->mHDAttachments.size(),
9068	Bstr (tr ("Preparing to discard snapshot")));
9069	AssertComRCReturn (rc, rc);
9070
9071	/* create and start the task on a separate thread */
9072	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
9073	int vrc = RTThreadCreate (NULL, taskHandler,
9074	(void *) task,
9075	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
9076	if (VBOX_FAILURE (vrc))
9077	delete task;
9078	ComAssertRCRet (vrc, E_FAIL);
9079
9080	/* set the proper machine state (note: after creating a Task instance) */
9081	setMachineState (MachineState_Discarding);
9082
9083	/* return the progress to the caller */
9084	progress.queryInterfaceTo (aProgress);
9085
9086	/* return the new state to the caller */
9087	*aMachineState = mData->mMachineState;
9088
9089	return S_OK;
9090	}
9091
9092	/**
9093	* @note Locks mParent + this + children objects for writing!
9094	*/
9095	STDMETHODIMP SessionMachine::DiscardCurrentState (
9096	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9097	{
9098	LogFlowThisFunc (("\n"));
9099
9100	AssertReturn (aInitiator, E_INVALIDARG);
9101	AssertReturn (aMachineState && aProgress, E_POINTER);
9102
9103	AutoCaller autoCaller (this);
9104	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9105
9106	/* Progress::init() needs mParent lock */
9107	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9108
9109	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9110
9111	if (mData->mCurrentSnapshot.isNull())
9112	return setError (E_FAIL,
9113	tr ("Could not discard the current state of the machine '%ls' "
9114	"because it doesn't have any snapshots"),
9115	mUserData->mName.raw());
9116
9117	/*
9118	* create a progress object. The number of operations is:
9119	* 1 (preparing) + # of VDIs + 1 (if we need to copy the saved state file)
9120	*/
9121	ComObjPtr <Progress> progress;
9122	progress.createObject();
9123	{
9124	ULONG opCount = 1 + mData->mCurrentSnapshot->data()
9125	.mMachine->mHDData->mHDAttachments.size();
9126	if (mData->mCurrentSnapshot->stateFilePath())
9127	++ opCount;
9128	progress->init (mParent, aInitiator,
9129	Bstr (tr ("Discarding current machine state")),
9130	FALSE /* aCancelable */, opCount,
9131	Bstr (tr ("Preparing to discard current state")));
9132	}
9133
9134	/* create and start the task on a separate thread */
9135	DiscardCurrentStateTask *task =
9136	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
9137	int vrc = RTThreadCreate (NULL, taskHandler,
9138	(void *) task,
9139	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
9140	if (VBOX_FAILURE (vrc))
9141	delete task;
9142	ComAssertRCRet (vrc, E_FAIL);
9143
9144	/* set the proper machine state (note: after creating a Task instance) */
9145	setMachineState (MachineState_Discarding);
9146
9147	/* return the progress to the caller */
9148	progress.queryInterfaceTo (aProgress);
9149
9150	/* return the new state to the caller */
9151	*aMachineState = mData->mMachineState;
9152
9153	return S_OK;
9154	}
9155
9156	/**
9157	* @note Locks mParent + other objects for writing!
9158	*/
9159	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState (
9160	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9161	{
9162	LogFlowThisFunc (("\n"));
9163
9164	AssertReturn (aInitiator, E_INVALIDARG);
9165	AssertReturn (aMachineState && aProgress, E_POINTER);
9166
9167	AutoCaller autoCaller (this);
9168	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9169
9170	/* Progress::init() needs mParent lock */
9171	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9172
9173	ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9174
9175	if (mData->mCurrentSnapshot.isNull())
9176	return setError (E_FAIL,
9177	tr ("Could not discard the current state of the machine '%ls' "
9178	"because it doesn't have any snapshots"),
9179	mUserData->mName.raw());
9180
9181	/*
9182	* create a progress object. The number of operations is:
9183	* 1 (preparing) + # of VDIs in the current snapshot +
9184	* # of VDIs in the previous snapshot +
9185	* 1 (if we need to copy the saved state file of the previous snapshot)
9186	* or (if there is no previous snapshot):
9187	* 1 (preparing) + # of VDIs in the current snapshot * 2 +
9188	* 1 (if we need to copy the saved state file of the current snapshot)
9189	*/
9190	ComObjPtr <Progress> progress;
9191	progress.createObject();
9192	{
9193	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
9194	ComObjPtr <Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
9195
9196	ULONG opCount = 1;
9197	if (prevSnapshot)
9198	{
9199	opCount += curSnapshot->data().mMachine->mHDData->mHDAttachments.size();
9200	opCount += prevSnapshot->data().mMachine->mHDData->mHDAttachments.size();
9201	if (prevSnapshot->stateFilePath())
9202	++ opCount;
9203	}
9204	else
9205	{
9206	opCount += curSnapshot->data().mMachine->mHDData->mHDAttachments.size() * 2;
9207	if (curSnapshot->stateFilePath())
9208	++ opCount;
9209	}
9210
9211	progress->init (mParent, aInitiator,
9212	Bstr (tr ("Discarding current machine snapshot and state")),
9213	FALSE /* aCancelable */, opCount,
9214	Bstr (tr ("Preparing to discard current snapshot and state")));
9215	}
9216
9217	/* create and start the task on a separate thread */
9218	DiscardCurrentStateTask *task =
9219	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
9220	int vrc = RTThreadCreate (NULL, taskHandler,
9221	(void *) task,
9222	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
9223	if (VBOX_FAILURE (vrc))
9224	delete task;
9225	ComAssertRCRet (vrc, E_FAIL);
9226
9227	/* set the proper machine state (note: after creating a Task instance) */
9228	setMachineState (MachineState_Discarding);
9229
9230	/* return the progress to the caller */
9231	progress.queryInterfaceTo (aProgress);
9232
9233	/* return the new state to the caller */
9234	*aMachineState = mData->mMachineState;
9235
9236	return S_OK;
9237	}
9238
9239	// public methods only for internal purposes
9240	/////////////////////////////////////////////////////////////////////////////
9241
9242	/**
9243	* Called from the client watcher thread to check for unexpected client
9244	* process death.
9245	*
9246	* @note On Win32 and on OS/2, this method is called only when we've got the
9247	* mutex (i.e. the client has either died or terminated normally). This
9248	* method always returns true.
9249	*
9250	* @note On Linux, the method returns true if the client process has
9251	* terminated abnormally (and/or the session has been uninitialized) and
9252	* false if it is still alive.
9253	*
9254	* @note Locks this object for writing.
9255	*/
9256	bool SessionMachine::checkForDeath()
9257	{
9258	Uninit::Reason reason;
9259	bool doUninit = false;
9260	bool ret = false;
9261
9262	/*
9263	* Enclose autoCaller with a block because calling uninit()
9264	* from under it will deadlock.
9265	*/
9266	{
9267	AutoCaller autoCaller (this);
9268	if (!autoCaller.isOk())
9269	{
9270	/*
9271	* return true if not ready, to cause the client watcher to exclude
9272	* the corresponding session from watching
9273	*/
9274	LogFlowThisFunc (("Already uninitialized!"));
9275	return true;
9276	}
9277
9278	AutoLock alock (this);
9279
9280	/*
9281	* Determine the reason of death: if the session state is Closing here,
9282	* everything is fine. Otherwise it means that the client did not call
9283	* OnSessionEnd() before it released the IPC semaphore.
9284	* This may happen either because the client process has abnormally
9285	* terminated, or because it simply forgot to call ISession::Close()
9286	* before exiting. We threat the latter also as an abnormal termination
9287	* (see Session::uninit() for details).
9288	*/
9289	reason = mData->mSession.mState == SessionState_SessionClosing ?
9290	Uninit::Normal :
9291	Uninit::Abnormal;
9292
9293	#if defined(RT_OS_WINDOWS)
9294
9295	AssertMsg (mIPCSem, ("semaphore must be created"));
9296
9297	/* release the IPC mutex */
9298	::ReleaseMutex (mIPCSem);
9299
9300	doUninit = true;
9301
9302	ret = true;
9303
9304	#elif defined(RT_OS_OS2)
9305
9306	AssertMsg (mIPCSem, ("semaphore must be created"));
9307
9308	/* release the IPC mutex */
9309	::DosReleaseMutexSem (mIPCSem);
9310
9311	doUninit = true;
9312
9313	ret = true;
9314
9315	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
9316
9317	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
9318
9319	int val = ::semctl (mIPCSem, 0, GETVAL);
9320	if (val > 0)
9321	{
9322	/* the semaphore is signaled, meaning the session is terminated */
9323	doUninit = true;
9324	}
9325
9326	ret = val > 0;
9327
9328	#else
9329	# error "Port me!"
9330	#endif
9331
9332	} /* AutoCaller block */
9333
9334	if (doUninit)
9335	uninit (reason);
9336
9337	return ret;
9338	}
9339
9340	/**
9341	* @note Locks this object for reading.
9342	*/
9343	HRESULT SessionMachine::onDVDDriveChange()
9344	{
9345	LogFlowThisFunc (("\n"));
9346
9347	AutoCaller autoCaller (this);
9348	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9349
9350	ComPtr <IInternalSessionControl> directControl;
9351	{
9352	AutoReaderLock alock (this);
9353	directControl = mData->mSession.mDirectControl;
9354	}
9355
9356	/* ignore notifications sent after #OnSessionEnd() is called */
9357	if (!directControl)
9358	return S_OK;
9359
9360	return directControl->OnDVDDriveChange();
9361	}
9362
9363	/**
9364	* @note Locks this object for reading.
9365	*/
9366	HRESULT SessionMachine::onFloppyDriveChange()
9367	{
9368	LogFlowThisFunc (("\n"));
9369
9370	AutoCaller autoCaller (this);
9371	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9372
9373	ComPtr <IInternalSessionControl> directControl;
9374	{
9375	AutoReaderLock alock (this);
9376	directControl = mData->mSession.mDirectControl;
9377	}
9378
9379	/* ignore notifications sent after #OnSessionEnd() is called */
9380	if (!directControl)
9381	return S_OK;
9382
9383	return directControl->OnFloppyDriveChange();
9384	}
9385
9386	/**
9387	* @note Locks this object for reading.
9388	*/
9389	HRESULT SessionMachine::onNetworkAdapterChange(INetworkAdapter *networkAdapter)
9390	{
9391	LogFlowThisFunc (("\n"));
9392
9393	AutoCaller autoCaller (this);
9394	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9395
9396	ComPtr <IInternalSessionControl> directControl;
9397	{
9398	AutoReaderLock alock (this);
9399	directControl = mData->mSession.mDirectControl;
9400	}
9401
9402	/* ignore notifications sent after #OnSessionEnd() is called */
9403	if (!directControl)
9404	return S_OK;
9405
9406	return directControl->OnNetworkAdapterChange(networkAdapter);
9407	}
9408
9409	/**
9410	* @note Locks this object for reading.
9411	*/
9412	HRESULT SessionMachine::onSerialPortChange(ISerialPort *serialPort)
9413	{
9414	LogFlowThisFunc (("\n"));
9415
9416	AutoCaller autoCaller (this);
9417	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9418
9419	ComPtr <IInternalSessionControl> directControl;
9420	{
9421	AutoReaderLock alock (this);
9422	directControl = mData->mSession.mDirectControl;
9423	}
9424
9425	/* ignore notifications sent after #OnSessionEnd() is called */
9426	if (!directControl)
9427	return S_OK;
9428
9429	return directControl->OnSerialPortChange(serialPort);
9430	}
9431
9432	/**
9433	* @note Locks this object for reading.
9434	*/
9435	HRESULT SessionMachine::onParallelPortChange(IParallelPort *parallelPort)
9436	{
9437	LogFlowThisFunc (("\n"));
9438
9439	AutoCaller autoCaller (this);
9440	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9441
9442	ComPtr <IInternalSessionControl> directControl;
9443	{
9444	AutoReaderLock alock (this);
9445	directControl = mData->mSession.mDirectControl;
9446	}
9447
9448	/* ignore notifications sent after #OnSessionEnd() is called */
9449	if (!directControl)
9450	return S_OK;
9451
9452	return directControl->OnParallelPortChange(parallelPort);
9453	}
9454
9455	/**
9456	* @note Locks this object for reading.
9457	*/
9458	HRESULT SessionMachine::onVRDPServerChange()
9459	{
9460	LogFlowThisFunc (("\n"));
9461
9462	AutoCaller autoCaller (this);
9463	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9464
9465	ComPtr <IInternalSessionControl> directControl;
9466	{
9467	AutoReaderLock alock (this);
9468	directControl = mData->mSession.mDirectControl;
9469	}
9470
9471	/* ignore notifications sent after #OnSessionEnd() is called */
9472	if (!directControl)
9473	return S_OK;
9474
9475	return directControl->OnVRDPServerChange();
9476	}
9477
9478	/**
9479	* @note Locks this object for reading.
9480	*/
9481	HRESULT SessionMachine::onUSBControllerChange()
9482	{
9483	LogFlowThisFunc (("\n"));
9484
9485	AutoCaller autoCaller (this);
9486	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9487
9488	ComPtr <IInternalSessionControl> directControl;
9489	{
9490	AutoReaderLock alock (this);
9491	directControl = mData->mSession.mDirectControl;
9492	}
9493
9494	/* ignore notifications sent after #OnSessionEnd() is called */
9495	if (!directControl)
9496	return S_OK;
9497
9498	return directControl->OnUSBControllerChange();
9499	}
9500
9501	/**
9502	* @note Locks this object for reading.
9503	*/
9504	HRESULT SessionMachine::onSharedFolderChange()
9505	{
9506	LogFlowThisFunc (("\n"));
9507
9508	AutoCaller autoCaller (this);
9509	AssertComRCReturnRC (autoCaller.rc());
9510
9511	ComPtr <IInternalSessionControl> directControl;
9512	{
9513	AutoReaderLock alock (this);
9514	directControl = mData->mSession.mDirectControl;
9515	}
9516
9517	/* ignore notifications sent after #OnSessionEnd() is called */
9518	if (!directControl)
9519	return S_OK;
9520
9521	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
9522	}
9523
9524	/**
9525	* Returns @c true if this machine's USB controller reports it has a matching
9526	* filter for the given USB device and @c false otherwise.
9527	*
9528	* @note Locks this object for reading.
9529	*/
9530	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr <HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
9531	{
9532	AutoCaller autoCaller (this);
9533	/* silently return if not ready -- this method may be called after the
9534	* direct machine session has been called */
9535	if (!autoCaller.isOk())
9536	return false;
9537
9538	AutoReaderLock alock (this);
9539
9540	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
9541	}
9542
9543	/**
9544	* @note Locks this object for reading.
9545	*/
9546	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
9547	IVirtualBoxErrorInfo *aError,
9548	ULONG aMaskedIfs)
9549	{
9550	LogFlowThisFunc (("\n"));
9551
9552	AutoCaller autoCaller (this);
9553
9554	/* This notification may happen after the machine object has been
9555	* uninitialized (the session was closed), so don't assert. */
9556	CheckComRCReturnRC (autoCaller.rc());
9557
9558	ComPtr <IInternalSessionControl> directControl;
9559	{
9560	AutoReaderLock alock (this);
9561	directControl = mData->mSession.mDirectControl;
9562	}
9563
9564	/* fail on notifications sent after #OnSessionEnd() is called, it is
9565	* expected by the caller */
9566	if (!directControl)
9567	return E_FAIL;
9568
9569	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
9570	}
9571
9572	/**
9573	* @note Locks this object for reading.
9574	*/
9575	HRESULT SessionMachine::onUSBDeviceDetach (INPTR GUIDPARAM aId,
9576	IVirtualBoxErrorInfo *aError)
9577	{
9578	LogFlowThisFunc (("\n"));
9579
9580	AutoCaller autoCaller (this);
9581
9582	/* This notification may happen after the machine object has been
9583	* uninitialized (the session was closed), so don't assert. */
9584	CheckComRCReturnRC (autoCaller.rc());
9585
9586	ComPtr <IInternalSessionControl> directControl;
9587	{
9588	AutoReaderLock alock (this);
9589	directControl = mData->mSession.mDirectControl;
9590	}
9591
9592	/* fail on notifications sent after #OnSessionEnd() is called, it is
9593	* expected by the caller */
9594	if (!directControl)
9595	return E_FAIL;
9596
9597	return directControl->OnUSBDeviceDetach (aId, aError);
9598	}
9599
9600	// protected methods
9601	/////////////////////////////////////////////////////////////////////////////
9602
9603	/**
9604	* Helper method to finalize saving the state.
9605	*
9606	* @note Must be called from under this object's lock.
9607	*
9608	* @param aSuccess TRUE if the snapshot has been taken successfully
9609	*
9610	* @note Locks mParent + this objects for writing.
9611	*/
9612	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
9613	{
9614	LogFlowThisFuncEnter();
9615
9616	AutoCaller autoCaller (this);
9617	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9618
9619	/* mParent->removeProgress() needs mParent lock */
9620	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9621
9622	HRESULT rc = S_OK;
9623
9624	if (aSuccess)
9625	{
9626	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
9627
9628	/* save all VM settings */
9629	rc = saveSettings();
9630	}
9631	else
9632	{
9633	/* delete the saved state file (it might have been already created) */
9634	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
9635	}
9636
9637	/* remove the completed progress object */
9638	mParent->removeProgress (mSnapshotData.mProgressId);
9639
9640	/* clear out the temporary saved state data */
9641	mSnapshotData.mLastState = MachineState_InvalidMachineState;
9642	mSnapshotData.mProgressId.clear();
9643	mSnapshotData.mStateFilePath.setNull();
9644
9645	LogFlowThisFuncLeave();
9646	return rc;
9647	}
9648
9649	/**
9650	* Helper method to finalize taking a snapshot.
9651	* Gets called only from #EndTakingSnapshot() that is expected to
9652	* be called by the VM process when it finishes all the tasks related to
9653	* taking a snapshot, either scucessfully or unsuccessfilly.
9654	*
9655	* @param aSuccess TRUE if the snapshot has been taken successfully
9656	*
9657	* @note Locks mParent + this objects for writing.
9658	*/
9659	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
9660	{
9661	LogFlowThisFuncEnter();
9662
9663	AutoCaller autoCaller (this);
9664	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9665
9666	/* Progress object uninitialization needs mParent lock */
9667	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9668
9669	HRESULT rc = S_OK;
9670
9671	if (aSuccess)
9672	{
9673	/* the server progress must be completed on success */
9674	Assert (mSnapshotData.mServerProgress->completed());
9675
9676	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
9677	/* memorize the first snapshot if necessary */
9678	if (!mData->mFirstSnapshot)
9679	mData->mFirstSnapshot = mData->mCurrentSnapshot;
9680
9681	int opFlags = SaveSS_AddOp \| SaveSS_UpdateCurrentId;
9682	if (mSnapshotData.mLastState != MachineState_Paused && !isModified())
9683	{
9684	/*
9685	* the machine was powered off or saved when taking a snapshot,
9686	* so reset the mCurrentStateModified flag
9687	*/
9688	mData->mCurrentStateModified = FALSE;
9689	opFlags \|= SaveSS_UpdateCurStateModified;
9690	}
9691
9692	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
9693	}
9694
9695	if (!aSuccess \|\| FAILED (rc))
9696	{
9697	if (mSnapshotData.mSnapshot)
9698	{
9699	/* wait for the completion of the server progress (diff VDI creation) */
9700	/// @todo (dmik) later, we will definitely want to cancel it instead
9701	// (when the cancel function is implemented)
9702	mSnapshotData.mServerProgress->WaitForCompletion (-1);
9703
9704	/*
9705	* delete all differencing VDIs created
9706	* (this will attach their parents back)
9707	*/
9708	rc = deleteSnapshotDiffs (mSnapshotData.mSnapshot);
9709	/* continue cleanup on error */
9710
9711	/* delete the saved state file (it might have been already created) */
9712	if (mSnapshotData.mSnapshot->stateFilePath())
9713	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
9714
9715	mSnapshotData.mSnapshot->uninit();
9716	}
9717	}
9718
9719	/* inform callbacks */
9720	if (aSuccess && SUCCEEDED (rc))
9721	mParent->onSnapshotTaken (mData->mUuid, mSnapshotData.mSnapshot->data().mId);
9722
9723	/* clear out the snapshot data */
9724	mSnapshotData.mLastState = MachineState_InvalidMachineState;
9725	mSnapshotData.mSnapshot.setNull();
9726	mSnapshotData.mServerProgress.setNull();
9727	/* uninitialize the combined progress (to remove it from the VBox collection) */
9728	if (!mSnapshotData.mCombinedProgress.isNull())
9729	{
9730	mSnapshotData.mCombinedProgress->uninit();
9731	mSnapshotData.mCombinedProgress.setNull();
9732	}
9733
9734	LogFlowThisFuncLeave();
9735	return rc;
9736	}
9737
9738	/**
9739	* Take snapshot task handler.
9740	* Must be called only by TakeSnapshotTask::handler()!
9741	*
9742	* The sole purpose of this task is to asynchronously create differencing VDIs
9743	* and copy the saved state file (when necessary). The VM process will wait
9744	* for this task to complete using the mSnapshotData.mServerProgress
9745	* returned to it.
9746	*
9747	* @note Locks mParent + this objects for writing.
9748	*/
9749	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask &aTask)
9750	{
9751	LogFlowThisFuncEnter();
9752
9753	AutoCaller autoCaller (this);
9754
9755	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
9756	if (!autoCaller.isOk())
9757	{
9758	/*
9759	* we might have been uninitialized because the session was
9760	* accidentally closed by the client, so don't assert
9761	*/
9762	LogFlowThisFuncLeave();
9763	return;
9764	}
9765
9766	/* endTakingSnapshot() needs mParent lock */
9767	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
9768
9769	HRESULT rc = S_OK;
9770
9771	LogFlowThisFunc (("Creating differencing VDIs...\n"));
9772
9773	/* create new differencing hard disks and attach them to this machine */
9774	rc = createSnapshotDiffs (&mSnapshotData.mSnapshot->data().mId,
9775	mUserData->mSnapshotFolderFull,
9776	mSnapshotData.mServerProgress,
9777	true /* aOnline */);
9778
9779	if (SUCCEEDED (rc) && mSnapshotData.mLastState == MachineState_Saved)
9780	{
9781	Utf8Str stateFrom = mSSData->mStateFilePath;
9782	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
9783
9784	LogFlowThisFunc (("Copying the execution state from '%s' to '%s'...\n",
9785	stateFrom.raw(), stateTo.raw()));
9786
9787	mSnapshotData.mServerProgress->advanceOperation (
9788	Bstr (tr ("Copying the execution state")));
9789
9790	/*
9791	* We can safely leave the lock here:
9792	* mMachineState is MachineState_Saving here
9793	*/
9794	alock.leave();
9795
9796	/* copy the state file */
9797	int vrc = RTFileCopyEx (stateFrom, stateTo, progressCallback,
9798	static_cast <Progress *> (mSnapshotData.mServerProgress));
9799
9800	alock.enter();
9801
9802	if (VBOX_FAILURE (vrc))
9803	rc = setError (E_FAIL,
9804	tr ("Could not copy the state file '%ls' to '%ls' (%Vrc)"),
9805	stateFrom.raw(), stateTo.raw());
9806	}
9807
9808	/*
9809	* we have to call endTakingSnapshot() here if the snapshot was taken
9810	* offline, because the VM process will not do it in this case
9811	*/
9812	if (mSnapshotData.mLastState != MachineState_Paused)
9813	{
9814	LogFlowThisFunc (("Finalizing the taken snapshot (rc=%08X)...\n", rc));
9815
9816	setMachineState (mSnapshotData.mLastState);
9817	updateMachineStateOnClient();
9818
9819	/* finalize the progress after setting the state, for consistency */
9820	mSnapshotData.mServerProgress->notifyComplete (rc);
9821
9822	endTakingSnapshot (SUCCEEDED (rc));
9823	}
9824	else
9825	{
9826	mSnapshotData.mServerProgress->notifyComplete (rc);
9827	}
9828
9829	LogFlowThisFuncLeave();
9830	}
9831
9832	/**
9833	* Discard snapshot task handler.
9834	* Must be called only by DiscardSnapshotTask::handler()!
9835	*
9836	* When aTask.subTask is true, the associated progress object is left
9837	* uncompleted on success. On failure, the progress is marked as completed
9838	* regardless of this parameter.
9839	*
9840	* @note Locks mParent + this + child objects for writing!
9841	*/
9842	void SessionMachine::discardSnapshotHandler (DiscardSnapshotTask &aTask)
9843	{
9844	LogFlowThisFuncEnter();
9845
9846	AutoCaller autoCaller (this);
9847
9848	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
9849	if (!autoCaller.isOk())
9850	{
9851	/*
9852	* we might have been uninitialized because the session was
9853	* accidentally closed by the client, so don't assert
9854	*/
9855	aTask.progress->notifyComplete (
9856	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
9857	tr ("The session has been accidentally closed"));
9858
9859	LogFlowThisFuncLeave();
9860	return;
9861	}
9862
9863	ComObjPtr <SnapshotMachine> sm = aTask.snapshot->data().mMachine;
9864
9865	/* mParent is locked because of Progress::notifyComplete(), etc. */
9866	AutoMultiLock <3> alock (mParent->wlock(), this->wlock(), sm->rlock());
9867
9868	/* Safe locking in the direction parent->child */
9869	AutoLock snapshotLock (aTask.snapshot);
9870	AutoLock snapshotChildrenLock (aTask.snapshot->childrenLock());
9871
9872	HRESULT rc = S_OK;
9873
9874	/* save the snapshot ID (for callbacks) */
9875	Guid snapshotId = aTask.snapshot->data().mId;
9876
9877	do
9878	{
9879	/* first pass: */
9880	LogFlowThisFunc (("Check hard disk accessibility and affected machines...\n"));
9881
9882	HDData::HDAttachmentList::const_iterator it;
9883	for (it = sm->mHDData->mHDAttachments.begin();
9884	it != sm->mHDData->mHDAttachments.end();
9885	++ it)
9886	{
9887	ComObjPtr <HardDiskAttachment> hda = *it;
9888	ComObjPtr <HardDisk> hd = hda->hardDisk();
9889	ComObjPtr <HardDisk> parent = hd->parent();
9890
9891	AutoLock hdLock (hd);
9892
9893	if (hd->hasForeignChildren())
9894	{
9895	rc = setError (E_FAIL,
9896	tr ("One or more hard disks belonging to other machines are "
9897	"based on the hard disk '%ls' stored in the snapshot '%ls'"),
9898	hd->toString().raw(), aTask.snapshot->data().mName.raw());
9899	break;
9900	}
9901
9902	if (hd->type() == HardDiskType_NormalHardDisk)
9903	{
9904	AutoLock hdChildrenLock (hd->childrenLock());
9905	size_t childrenCount = hd->children().size();
9906	if (childrenCount > 1)
9907	{
9908	rc = setError (E_FAIL,
9909	tr ("Normal hard disk '%ls' stored in the snapshot '%ls' "
9910	"has more than one child hard disk (%d)"),
9911	hd->toString().raw(), aTask.snapshot->data().mName.raw(),
9912	childrenCount);
9913	break;
9914	}
9915	}
9916	else
9917	{
9918	ComAssertMsgFailedBreak (("Invalid hard disk type %d\n", hd->type()),
9919	rc = E_FAIL);
9920	}
9921
9922	Bstr accessError;
9923	rc = hd->getAccessibleWithChildren (accessError);
9924	CheckComRCBreakRC (rc);
9925
9926	if (!accessError.isNull())
9927	{
9928	rc = setError (E_FAIL,
9929	tr ("Hard disk '%ls' stored in the snapshot '%ls' is not "
9930	"accessible (%ls)"),
9931	hd->toString().raw(), aTask.snapshot->data().mName.raw(),
9932	accessError.raw());
9933	break;
9934	}
9935
9936	rc = hd->setBusyWithChildren();
9937	if (FAILED (rc))
9938	{
9939	/* reset the busy flag of all previous hard disks */
9940	while (it != sm->mHDData->mHDAttachments.begin())
9941	(*(-- it))->hardDisk()->clearBusyWithChildren();
9942	break;
9943	}
9944	}
9945
9946	CheckComRCBreakRC (rc);
9947
9948	/* second pass: */
9949	LogFlowThisFunc (("Performing actual vdi merging...\n"));
9950
9951	for (it = sm->mHDData->mHDAttachments.begin();
9952	it != sm->mHDData->mHDAttachments.end();
9953	++ it)
9954	{
9955	ComObjPtr <HardDiskAttachment> hda = *it;
9956	ComObjPtr <HardDisk> hd = hda->hardDisk();
9957	ComObjPtr <HardDisk> parent = hd->parent();
9958
9959	AutoLock hdLock (hd);
9960
9961	Bstr hdRootString = hd->root()->toString (true /* aShort */);
9962
9963	if (parent)
9964	{
9965	if (hd->isParentImmutable())
9966	{
9967	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
9968	tr ("Discarding changes to immutable hard disk '%ls'"),
9969	hdRootString.raw())));
9970
9971	/* clear the busy flag before unregistering */
9972	hd->clearBusy();
9973
9974	/*
9975	* unregisterDiffHardDisk() is supposed to delete and uninit
9976	* the differencing hard disk
9977	*/
9978	rc = mParent->unregisterDiffHardDisk (hd);
9979	CheckComRCBreakRC (rc);
9980	continue;
9981	}
9982	else
9983	{
9984	/*
9985	* differencing VDI:
9986	* merge this image to all its children
9987	*/
9988
9989	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
9990	tr ("Merging changes to normal hard disk '%ls' to children"),
9991	hdRootString.raw())));
9992
9993	snapshotChildrenLock.unlock();
9994	snapshotLock.unlock();
9995	alock.leave();
9996
9997	rc = hd->asVDI()->mergeImageToChildren (aTask.progress);
9998
9999	alock.enter();
10000	snapshotLock.lock();
10001	snapshotChildrenLock.lock();
10002
10003	// debug code
10004	// if (it != sm->mHDData->mHDAttachments.begin())
10005	// {
10006	// rc = setError (E_FAIL, "Simulated failure");
10007	// break;
10008	//}
10009
10010	if (SUCCEEDED (rc))
10011	rc = mParent->unregisterDiffHardDisk (hd);
10012	else
10013	hd->clearBusyWithChildren();
10014
10015	CheckComRCBreakRC (rc);
10016	}
10017	}
10018	else if (hd->type() == HardDiskType_NormalHardDisk)
10019	{
10020	/*
10021	* normal vdi has the only child or none
10022	* (checked in the first pass)
10023	*/
10024
10025	ComObjPtr <HardDisk> child;
10026	{
10027	AutoLock hdChildrenLock (hd->childrenLock());
10028	if (hd->children().size())
10029	child = hd->children().front();
10030	}
10031
10032	if (child.isNull())
10033	{
10034	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
10035	tr ("Detaching normal hard disk '%ls'"),
10036	hdRootString.raw())));
10037
10038	/* just deassociate the normal image from this machine */
10039	hd->setMachineId (Guid());
10040	hd->setSnapshotId (Guid());
10041
10042	/* clear the busy flag */
10043	hd->clearBusy();
10044	}
10045	else
10046	{
10047	AutoLock childLock (child);
10048
10049	aTask.progress->advanceOperation (Bstr (Utf8StrFmt (
10050	tr ("Preserving changes to normal hard disk '%ls'"),
10051	hdRootString.raw())));
10052
10053	ComObjPtr <Machine> cm;
10054	ComObjPtr <Snapshot> cs;
10055	ComObjPtr <HardDiskAttachment> childHda;
10056	rc = findHardDiskAttachment (child, &cm, &cs, &childHda);
10057	CheckComRCBreakRC (rc);
10058	/* must be the same machine (checked in the first pass) */
10059	ComAssertBreak (cm->mData->mUuid == mData->mUuid, rc = E_FAIL);
10060
10061	/* merge the child to this basic image */
10062
10063	snapshotChildrenLock.unlock();
10064	snapshotLock.unlock();
10065	alock.leave();
10066
10067	rc = child->asVDI()->mergeImageToParent (aTask.progress);
10068
10069	alock.enter();
10070	snapshotLock.lock();
10071	snapshotChildrenLock.lock();
10072
10073	if (SUCCEEDED (rc))
10074	rc = mParent->unregisterDiffHardDisk (child);
10075	else
10076	hd->clearBusyWithChildren();
10077
10078	CheckComRCBreakRC (rc);
10079
10080	/* reset the snapshot Id */
10081	hd->setSnapshotId (Guid());
10082
10083	/* replace the child image in the appropriate place */
10084	childHda->updateHardDisk (hd, FALSE /* aDirty */);
10085
10086	if (!cs)
10087	{
10088	aTask.settingsChanged = true;
10089	}
10090	else
10091	{
10092	rc = cm->saveSnapshotSettings (cs, SaveSS_UpdateAllOp);
10093	CheckComRCBreakRC (rc);
10094	}
10095	}
10096	}
10097	else
10098	{
10099	ComAssertMsgFailedBreak (("Invalid hard disk type %d\n", hd->type()),
10100	rc = E_FAIL);
10101	}
10102	}
10103
10104	/* preserve existing error info */
10105	ErrorInfoKeeper mergeEik;
10106	HRESULT mergeRc = rc;
10107
10108	if (FAILED (rc))
10109	{
10110	/* clear the busy flag on the rest of hard disks */
10111	for (++ it; it != sm->mHDData->mHDAttachments.end(); ++ it)
10112	(*it)->hardDisk()->clearBusyWithChildren();
10113	}
10114
10115	/*
10116	* we have to try to discard the snapshot even if merging failed
10117	* because some images might have been already merged (and deleted)
10118	*/
10119
10120	do
10121	{
10122	LogFlowThisFunc (("Discarding the snapshot (reparenting children)...\n"));
10123
10124	/* It is important to uninitialize and delete all snapshot's hard
10125	* disk attachments as they are no longer valid -- otherwise the
10126	* code in Machine::uninitDataAndChildObjects() will mistakenly
10127	* perform hard disk deassociation. */
10128	for (HDData::HDAttachmentList::iterator it = sm->mHDData->mHDAttachments.begin();
10129	it != sm->mHDData->mHDAttachments.end();)
10130	{
10131	(*it)->uninit();
10132	it = sm->mHDData->mHDAttachments.erase (it);
10133	}
10134
10135	ComObjPtr <Snapshot> parentSnapshot = aTask.snapshot->parent();
10136
10137	/// @todo (dmik):
10138	// when we introduce clones later, discarding the snapshot
10139	// will affect the current and first snapshots of clones, if they are
10140	// direct children of this snapshot. So we will need to lock machines
10141	// associated with child snapshots as well and update mCurrentSnapshot
10142	// and/or mFirstSnapshot fields.
10143
10144	if (aTask.snapshot == mData->mCurrentSnapshot)
10145	{
10146	/* currently, the parent snapshot must refer to the same machine */
10147	ComAssertBreak (
10148	!parentSnapshot \|\|
10149	parentSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10150	rc = E_FAIL);
10151	mData->mCurrentSnapshot = parentSnapshot;
10152	/* mark the current state as modified */
10153	mData->mCurrentStateModified = TRUE;
10154	}
10155
10156	if (aTask.snapshot == mData->mFirstSnapshot)
10157	{
10158	/*
10159	* the first snapshot must have only one child when discarded,
10160	* or no children at all
10161	*/
10162	ComAssertBreak (aTask.snapshot->children().size() <= 1, rc = E_FAIL);
10163
10164	if (aTask.snapshot->children().size() == 1)
10165	{
10166	ComObjPtr <Snapshot> childSnapshot = aTask.snapshot->children().front();
10167	ComAssertBreak (
10168	childSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10169	rc = E_FAIL);
10170	mData->mFirstSnapshot = childSnapshot;
10171	}
10172	else
10173	mData->mFirstSnapshot.setNull();
10174	}
10175
10176	/// @todo (dmik)
10177	// if we implement some warning mechanism later, we'll have
10178	// to return a warning if the state file path cannot be deleted
10179	Bstr stateFilePath = aTask.snapshot->stateFilePath();
10180	if (stateFilePath)
10181	RTFileDelete (Utf8Str (stateFilePath));
10182
10183	aTask.snapshot->discard();
10184
10185	rc = saveSnapshotSettings (parentSnapshot,
10186	SaveSS_UpdateAllOp \| SaveSS_UpdateCurrentId);
10187	}
10188	while (0);
10189
10190	/* restore the merge error if any (ErrorInfo will be restored
10191	* automatically) */
10192	if (FAILED (mergeRc))
10193	rc = mergeRc;
10194	}
10195	while (0);
10196
10197	if (!aTask.subTask \|\| FAILED (rc))
10198	{
10199	if (!aTask.subTask)
10200	{
10201	/* preserve existing error info */
10202	ErrorInfoKeeper eik;
10203
10204	/* restore the machine state */
10205	setMachineState (aTask.state);
10206	updateMachineStateOnClient();
10207
10208	/*
10209	* save settings anyway, since we've already changed the current
10210	* machine configuration
10211	*/
10212	if (aTask.settingsChanged)
10213	{
10214	saveSettings (true /* aMarkCurStateAsModified */,
10215	true /* aInformCallbacksAnyway */);
10216	}
10217	}
10218
10219	/* set the result (this will try to fetch current error info on failure) */
10220	aTask.progress->notifyComplete (rc);
10221	}
10222
10223	if (SUCCEEDED (rc))
10224	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
10225
10226	LogFlowThisFunc (("Done discarding snapshot (rc=%08X)\n", rc));
10227	LogFlowThisFuncLeave();
10228	}
10229
10230	/**
10231	* Discard current state task handler.
10232	* Must be called only by DiscardCurrentStateTask::handler()!
10233	*
10234	* @note Locks mParent + this object for writing.
10235	*/
10236	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
10237	{
10238	LogFlowThisFuncEnter();
10239
10240	AutoCaller autoCaller (this);
10241
10242	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10243	if (!autoCaller.isOk())
10244	{
10245	/*
10246	* we might have been uninitialized because the session was
10247	* accidentally closed by the client, so don't assert
10248	*/
10249	aTask.progress->notifyComplete (
10250	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10251	tr ("The session has been accidentally closed"));
10252
10253	LogFlowThisFuncLeave();
10254	return;
10255	}
10256
10257	/* mParent is locked because of Progress::notifyComplete(), etc. */
10258	AutoMultiLock <2> alock (mParent->wlock(), this->wlock());
10259
10260	/*
10261	* discard all current changes to mUserData (name, OSType etc.)
10262	* (note that the machine is powered off, so there is no need
10263	* to inform the direct session)
10264	*/
10265	if (isModified())
10266	rollback (false /* aNotify */);
10267
10268	HRESULT rc = S_OK;
10269
10270	bool errorInSubtask = false;
10271	bool stateRestored = false;
10272
10273	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
10274
10275	do
10276	{
10277	/*
10278	* discard the saved state file if the machine was Saved prior
10279	* to this operation
10280	*/
10281	if (aTask.state == MachineState_Saved)
10282	{
10283	Assert (!mSSData->mStateFilePath.isEmpty());
10284	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10285	mSSData->mStateFilePath.setNull();
10286	aTask.modifyLastState (MachineState_PoweredOff);
10287	rc = saveStateSettings (SaveSTS_StateFilePath);
10288	CheckComRCBreakRC (rc);
10289	}
10290
10291	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
10292	{
10293	/*
10294	* the "discard current snapshot and state" task is in action,
10295	* the current snapshot is not the last one.
10296	* Discard the current snapshot first.
10297	*/
10298
10299	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10300	subTask.subTask = true;
10301	discardSnapshotHandler (subTask);
10302	aTask.settingsChanged = subTask.settingsChanged;
10303	if (aTask.progress->completed())
10304	{
10305	/*
10306	* the progress can be completed by a subtask only if there was
10307	* a failure
10308	*/
10309	Assert (FAILED (aTask.progress->resultCode()));
10310	errorInSubtask = true;
10311	rc = aTask.progress->resultCode();
10312	break;
10313	}
10314	}
10315
10316	LONG64 snapshotTimeStamp = 0;
10317
10318	{
10319	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
10320	AutoLock snapshotLock (curSnapshot);
10321
10322	/* remember the timestamp of the snapshot we're restoring from */
10323	snapshotTimeStamp = curSnapshot->data().mTimeStamp;
10324
10325	/* copy all hardware data from the current snapshot */
10326	copyFrom (curSnapshot->data().mMachine);
10327
10328	LogFlowThisFunc (("Restoring VDIs from the snapshot...\n"));
10329
10330	/* restore the attachmends from the snapshot */
10331	mHDData.backup();
10332	mHDData->mHDAttachments =
10333	curSnapshot->data().mMachine->mHDData->mHDAttachments;
10334
10335	snapshotLock.unlock();
10336	alock.leave();
10337	rc = createSnapshotDiffs (NULL, mUserData->mSnapshotFolderFull,
10338	aTask.progress,
10339	false /* aOnline */);
10340	alock.enter();
10341	snapshotLock.lock();
10342
10343	if (FAILED (rc))
10344	{
10345	/* here we can still safely rollback, so do it */
10346	/* preserve existing error info */
10347	ErrorInfoKeeper eik;
10348	/* undo all changes */
10349	rollback (false /* aNotify */);
10350	break;
10351	}
10352
10353	/*
10354	* note: old VDIs will be deassociated/deleted on #commit() called
10355	* either from #saveSettings() or directly at the end
10356	*/
10357
10358	/* should not have a saved state file associated at this point */
10359	Assert (mSSData->mStateFilePath.isNull());
10360
10361	if (curSnapshot->stateFilePath())
10362	{
10363	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
10364
10365	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%Vuuid}.sav",
10366	mUserData->mSnapshotFolderFull.raw(),
10367	RTPATH_DELIMITER, mData->mUuid.raw());
10368
10369	LogFlowThisFunc (("Copying saved state file from '%s' to '%s'...\n",
10370	snapStateFilePath.raw(), stateFilePath.raw()));
10371
10372	aTask.progress->advanceOperation (
10373	Bstr (tr ("Restoring the execution state")));
10374
10375	/* copy the state file */
10376	snapshotLock.unlock();
10377	alock.leave();
10378	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
10379	progressCallback, aTask.progress);
10380	alock.enter();
10381	snapshotLock.lock();
10382
10383	if (VBOX_SUCCESS (vrc))
10384	{
10385	mSSData->mStateFilePath = stateFilePath;
10386	}
10387	else
10388	{
10389	rc = setError (E_FAIL,
10390	tr ("Could not copy the state file '%s' to '%s' (%Vrc)"),
10391	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
10392	break;
10393	}
10394	}
10395	}
10396
10397	bool informCallbacks = false;
10398
10399	if (aTask.discardCurrentSnapshot && isLastSnapshot)
10400	{
10401	/*
10402	* discard the current snapshot and state task is in action,
10403	* the current snapshot is the last one.
10404	* Discard the current snapshot after discarding the current state.
10405	*/
10406
10407	/* commit changes to fixup hard disks before discarding */
10408	rc = commit();
10409	if (SUCCEEDED (rc))
10410	{
10411	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10412	subTask.subTask = true;
10413	discardSnapshotHandler (subTask);
10414	aTask.settingsChanged = subTask.settingsChanged;
10415	if (aTask.progress->completed())
10416	{
10417	/*
10418	* the progress can be completed by a subtask only if there
10419	* was a failure
10420	*/
10421	Assert (FAILED (aTask.progress->resultCode()));
10422	errorInSubtask = true;
10423	rc = aTask.progress->resultCode();
10424	}
10425	}
10426
10427	/*
10428	* we've committed already, so inform callbacks anyway to ensure
10429	* they don't miss some change
10430	*/
10431	informCallbacks = true;
10432	}
10433
10434	/*
10435	* we have already discarded the current state, so set the
10436	* execution state accordingly no matter of the discard snapshot result
10437	*/
10438	if (mSSData->mStateFilePath)
10439	setMachineState (MachineState_Saved);
10440	else
10441	setMachineState (MachineState_PoweredOff);
10442
10443	updateMachineStateOnClient();
10444	stateRestored = true;
10445
10446	if (errorInSubtask)
10447	break;
10448
10449	/* assign the timestamp from the snapshot */
10450	Assert (snapshotTimeStamp != 0);
10451	mData->mLastStateChange = snapshotTimeStamp;
10452
10453	/* mark the current state as not modified */
10454	mData->mCurrentStateModified = FALSE;
10455
10456	/* save all settings and commit */
10457	rc = saveSettings (false /* aMarkCurStateAsModified */,
10458	informCallbacks);
10459	aTask.settingsChanged = false;
10460	}
10461	while (0);
10462
10463	if (FAILED (rc))
10464	{
10465	/* preserve existing error info */
10466	ErrorInfoKeeper eik;
10467
10468	if (!stateRestored)
10469	{
10470	/* restore the machine state */
10471	setMachineState (aTask.state);
10472	updateMachineStateOnClient();
10473	}
10474
10475	/*
10476	* save all settings and commit if still modified (there is no way to
10477	* rollback properly). Note that isModified() will return true after
10478	* copyFrom(). Also save the settings if requested by the subtask.
10479	*/
10480	if (isModified() \|\| aTask.settingsChanged)
10481	{
10482	if (aTask.settingsChanged)
10483	saveSettings (true /* aMarkCurStateAsModified */,
10484	true /* aInformCallbacksAnyway */);
10485	else
10486	saveSettings();
10487	}
10488	}
10489
10490	if (!errorInSubtask)
10491	{
10492	/* set the result (this will try to fetch current error info on failure) */
10493	aTask.progress->notifyComplete (rc);
10494	}
10495
10496	if (SUCCEEDED (rc))
10497	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
10498
10499	LogFlowThisFunc (("Done discarding current state (rc=%08X)\n", rc));
10500
10501	LogFlowThisFuncLeave();
10502	}
10503
10504	/**
10505	* Helper to change the machine state (reimplementation).
10506	*
10507	* @note Locks this object for writing.
10508	*/
10509	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
10510	{
10511	LogFlowThisFuncEnter();
10512	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
10513
10514	AutoCaller autoCaller (this);
10515	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10516
10517	AutoLock alock (this);
10518
10519	MachineState_T oldMachineState = mData->mMachineState;
10520
10521	AssertMsgReturn (oldMachineState != aMachineState,
10522	("oldMachineState=%d, aMachineState=%d\n",
10523	oldMachineState, aMachineState), E_FAIL);
10524
10525	HRESULT rc = S_OK;
10526
10527	int stsFlags = 0;
10528	bool deleteSavedState = false;
10529
10530	/* detect some state transitions */
10531
10532	if (oldMachineState < MachineState_Running &&
10533	aMachineState >= MachineState_Running &&
10534	aMachineState != MachineState_Discarding)
10535	{
10536	/*
10537	* the EMT thread is about to start, so mark attached HDDs as busy
10538	* and all its ancestors as being in use
10539	*/
10540	for (HDData::HDAttachmentList::const_iterator it =
10541	mHDData->mHDAttachments.begin();
10542	it != mHDData->mHDAttachments.end();
10543	++ it)
10544	{
10545	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
10546	AutoLock hdLock (hd);
10547	hd->setBusy();
10548	hd->addReaderOnAncestors();
10549	}
10550	}
10551	else
10552	if (oldMachineState >= MachineState_Running &&
10553	oldMachineState != MachineState_Discarding &&
10554	aMachineState < MachineState_Running)
10555	{
10556	/*
10557	* the EMT thread stopped, so mark attached HDDs as no more busy
10558	* and remove the in-use flag from all its ancestors
10559	*/
10560	for (HDData::HDAttachmentList::const_iterator it =
10561	mHDData->mHDAttachments.begin();
10562	it != mHDData->mHDAttachments.end();
10563	++ it)
10564	{
10565	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
10566	AutoLock hdLock (hd);
10567	hd->releaseReaderOnAncestors();
10568	hd->clearBusy();
10569	}
10570	}
10571
10572	if (oldMachineState == MachineState_Restoring)
10573	{
10574	if (aMachineState != MachineState_Saved)
10575	{
10576	/*
10577	* delete the saved state file once the machine has finished
10578	* restoring from it (note that Console sets the state from
10579	* Restoring to Saved if the VM couldn't restore successfully,
10580	* to give the user an ability to fix an error and retry --
10581	* we keep the saved state file in this case)
10582	*/
10583	deleteSavedState = true;
10584	}
10585	}
10586	else
10587	if (oldMachineState == MachineState_Saved &&
10588	(aMachineState == MachineState_PoweredOff \|\|
10589	aMachineState == MachineState_Aborted))
10590	{
10591	/*
10592	* delete the saved state after Console::DiscardSavedState() is called
10593	* or if the VM process (owning a direct VM session) crashed while the
10594	* VM was Saved
10595	*/
10596
10597	/// @todo (dmik)
10598	// Not sure that deleting the saved state file just because of the
10599	// client death before it attempted to restore the VM is a good
10600	// thing. But when it crashes we need to go to the Aborted state
10601	// which cannot have the saved state file associated... The only
10602	// way to fix this is to make the Aborted condition not a VM state
10603	// but a bool flag: i.e., when a crash occurs, set it to true and
10604	// change the state to PoweredOff or Saved depending on the
10605	// saved state presence.
10606
10607	deleteSavedState = true;
10608	mData->mCurrentStateModified = TRUE;
10609	stsFlags \|= SaveSTS_CurStateModified;
10610	}
10611
10612	if (aMachineState == MachineState_Starting \|\|
10613	aMachineState == MachineState_Restoring)
10614	{
10615	/*
10616	* set the current state modified flag to indicate that the
10617	* current state is no more identical to the state in the
10618	* current snapshot
10619	*/
10620	if (!mData->mCurrentSnapshot.isNull())
10621	{
10622	mData->mCurrentStateModified = TRUE;
10623	stsFlags \|= SaveSTS_CurStateModified;
10624	}
10625	}
10626
10627	if (deleteSavedState == true)
10628	{
10629	Assert (!mSSData->mStateFilePath.isEmpty());
10630	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10631	mSSData->mStateFilePath.setNull();
10632	stsFlags \|= SaveSTS_StateFilePath;
10633	}
10634
10635	/* redirect to the underlying peer machine */
10636	mPeer->setMachineState (aMachineState);
10637
10638	if (aMachineState == MachineState_PoweredOff \|\|
10639	aMachineState == MachineState_Aborted \|\|
10640	aMachineState == MachineState_Saved)
10641	{
10642	/* the machine has stopped execution
10643	* (or the saved state file was adopted) */
10644	stsFlags \|= SaveSTS_StateTimeStamp;
10645	}
10646
10647	if ((oldMachineState == MachineState_PoweredOff \|\|
10648	oldMachineState == MachineState_Aborted) &&
10649	aMachineState == MachineState_Saved)
10650	{
10651	/* the saved state file was adopted */
10652	Assert (!mSSData->mStateFilePath.isNull());
10653	stsFlags \|= SaveSTS_StateFilePath;
10654	}
10655
10656	rc = saveStateSettings (stsFlags);
10657
10658	if ((oldMachineState != MachineState_PoweredOff &&
10659	oldMachineState != MachineState_Aborted) &&
10660	(aMachineState == MachineState_PoweredOff \|\|
10661	aMachineState == MachineState_Aborted))
10662	{
10663	/*
10664	* clear differencing hard disks based on immutable hard disks
10665	* once we've been shut down for any reason
10666	*/
10667	rc = wipeOutImmutableDiffs();
10668	}
10669
10670	LogFlowThisFunc (("rc=%08X\n", rc));
10671	LogFlowThisFuncLeave();
10672	return rc;
10673	}
10674
10675	/**
10676	* Sends the current machine state value to the VM process.
10677	*
10678	* @note Locks this object for reading, then calls a client process.
10679	*/
10680	HRESULT SessionMachine::updateMachineStateOnClient()
10681	{
10682	AutoCaller autoCaller (this);
10683	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10684
10685	ComPtr <IInternalSessionControl> directControl;
10686	{
10687	AutoReaderLock alock (this);
10688	AssertReturn (!!mData, E_FAIL);
10689	directControl = mData->mSession.mDirectControl;
10690
10691	/* directControl may be already set to NULL here in #OnSessionEnd()
10692	* called too early by the direct session process while there is still
10693	* some operation (like discarding the snapshot) in progress. The client
10694	* process in this case is waiting inside Session::close() for the
10695	* "end session" process object to complete, while #uninit() called by
10696	* #checkForDeath() on the Watcher thread is waiting for the pending
10697	* operation to complete. For now, we accept this inconsitent behavior
10698	* and simply do nothing here. */
10699
10700	if (mData->mSession.mState == SessionState_SessionClosing)
10701	return S_OK;
10702
10703	AssertReturn (!directControl.isNull(), E_FAIL);
10704	}
10705
10706	return directControl->UpdateMachineState (mData->mMachineState);
10707	}
10708
10709	/* static */
10710	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD thread, void *pvUser)
10711	{
10712	AssertReturn (pvUser, VERR_INVALID_POINTER);
10713
10714	Task task = static_cast <Task > (pvUser);
10715	task->handler();
10716
10717	// it's our responsibility to delete the task
10718	delete task;
10719
10720	return 0;
10721	}
10722
10723	/////////////////////////////////////////////////////////////////////////////
10724	// SnapshotMachine class
10725	/////////////////////////////////////////////////////////////////////////////
10726
10727	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
10728
10729	HRESULT SnapshotMachine::FinalConstruct()
10730	{
10731	LogFlowThisFunc (("\n"));
10732
10733	/* set the proper type to indicate we're the SnapshotMachine instance */
10734	unconst (mType) = IsSnapshotMachine;
10735
10736	return S_OK;
10737	}
10738
10739	void SnapshotMachine::FinalRelease()
10740	{
10741	LogFlowThisFunc (("\n"));
10742
10743	uninit();
10744	}
10745
10746	/**
10747	* Initializes the SnapshotMachine object when taking a snapshot.
10748	*
10749	* @param aSessionMachine machine to take a snapshot from
10750	* @param aSnapshotId snapshot ID of this snapshot machine
10751	* @param aStateFilePath file where the execution state will be later saved
10752	* (or NULL for the offline snapshot)
10753	*
10754	* @note Locks aSessionMachine object for reading.
10755	*/
10756	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
10757	INPTR GUIDPARAM aSnapshotId,
10758	INPTR BSTR aStateFilePath)
10759	{
10760	LogFlowThisFuncEnter();
10761	LogFlowThisFunc (("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
10762
10763	AssertReturn (aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
10764
10765	/* Enclose the state transition NotReady->InInit->Ready */
10766	AutoInitSpan autoInitSpan (this);
10767	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
10768
10769	mSnapshotId = aSnapshotId;
10770
10771	AutoReaderLock alock (aSessionMachine);
10772
10773	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
10774	unconst (mPeer) = aSessionMachine->mPeer;
10775	/* share the parent pointer */
10776	unconst (mParent) = mPeer->mParent;
10777
10778	/* take the pointer to Data to share */
10779	mData.share (mPeer->mData);
10780	/*
10781	* take the pointer to UserData to share
10782	* (our UserData must always be the same as Machine's data)
10783	*/
10784	mUserData.share (mPeer->mUserData);
10785	/* make a private copy of all other data (recent changes from SessionMachine) */
10786	mHWData.attachCopy (aSessionMachine->mHWData);
10787	mHDData.attachCopy (aSessionMachine->mHDData);
10788
10789	/* SSData is always unique for SnapshotMachine */
10790	mSSData.allocate();
10791	mSSData->mStateFilePath = aStateFilePath;
10792
10793	/*
10794	* create copies of all shared folders (mHWData after attiching a copy
10795	* contains just references to original objects)
10796	*/
10797	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
10798	it != mHWData->mSharedFolders.end();
10799	++ it)
10800	{
10801	ComObjPtr <SharedFolder> folder;
10802	folder.createObject();
10803	HRESULT rc = folder->initCopy (this, *it);
10804	CheckComRCReturnRC (rc);
10805	*it = folder;
10806	}
10807
10808	/* create all other child objects that will be immutable private copies */
10809
10810	unconst (mBIOSSettings).createObject();
10811	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
10812
10813	#ifdef VBOX_VRDP
10814	unconst (mVRDPServer).createObject();
10815	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
10816	#endif
10817
10818	unconst (mDVDDrive).createObject();
10819	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
10820
10821	unconst (mFloppyDrive).createObject();
10822	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
10823
10824	unconst (mAudioAdapter).createObject();
10825	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
10826
10827	unconst (mUSBController).createObject();
10828	mUSBController->initCopy (this, mPeer->mUSBController);
10829
10830	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
10831	{
10832	unconst (mNetworkAdapters [slot]).createObject();
10833	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
10834	}
10835
10836	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
10837	{
10838	unconst (mSerialPorts [slot]).createObject();
10839	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
10840	}
10841
10842	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
10843	{
10844	unconst (mParallelPorts [slot]).createObject();
10845	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
10846	}
10847
10848	/* Confirm a successful initialization when it's the case */
10849	autoInitSpan.setSucceeded();
10850
10851	LogFlowThisFuncLeave();
10852	return S_OK;
10853	}
10854
10855	/**
10856	* Initializes the SnapshotMachine object when loading from the settings file.
10857	*
10858	* @param aMachine machine the snapshot belngs to
10859	* @param aHWNode <Hardware> node
10860	* @param aHDAsNode <HardDiskAttachments> node
10861	* @param aSnapshotId snapshot ID of this snapshot machine
10862	* @param aStateFilePath file where the execution state is saved
10863	* (or NULL for the offline snapshot)
10864	*
10865	* @note Locks aMachine object for reading.
10866	*/
10867	HRESULT SnapshotMachine::init (Machine *aMachine, CFGNODE aHWNode, CFGNODE aHDAsNode,
10868	INPTR GUIDPARAM aSnapshotId, INPTR BSTR aStateFilePath)
10869	{
10870	LogFlowThisFuncEnter();
10871	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
10872
10873	AssertReturn (aMachine && aHWNode && aHDAsNode && !Guid (aSnapshotId).isEmpty(),
10874	E_INVALIDARG);
10875
10876	/* Enclose the state transition NotReady->InInit->Ready */
10877	AutoInitSpan autoInitSpan (this);
10878	AssertReturn (autoInitSpan.isOk(), E_UNEXPECTED);
10879
10880	mSnapshotId = aSnapshotId;
10881
10882	AutoReaderLock alock (aMachine);
10883
10884	/* memorize the primary Machine instance */
10885	unconst (mPeer) = aMachine;
10886	/* share the parent pointer */
10887	unconst (mParent) = mPeer->mParent;
10888
10889	/* take the pointer to Data to share */
10890	mData.share (mPeer->mData);
10891	/*
10892	* take the pointer to UserData to share
10893	* (our UserData must always be the same as Machine's data)
10894	*/
10895	mUserData.share (mPeer->mUserData);
10896	/* allocate private copies of all other data (will be loaded from settings) */
10897	mHWData.allocate();
10898	mHDData.allocate();
10899
10900	/* SSData is always unique for SnapshotMachine */
10901	mSSData.allocate();
10902	mSSData->mStateFilePath = aStateFilePath;
10903
10904	/* create all other child objects that will be immutable private copies */
10905
10906	unconst (mBIOSSettings).createObject();
10907	mBIOSSettings->init (this);
10908
10909	#ifdef VBOX_VRDP
10910	unconst (mVRDPServer).createObject();
10911	mVRDPServer->init (this);
10912	#endif
10913
10914	unconst (mDVDDrive).createObject();
10915	mDVDDrive->init (this);
10916
10917	unconst (mFloppyDrive).createObject();
10918	mFloppyDrive->init (this);
10919
10920	unconst (mAudioAdapter).createObject();
10921	mAudioAdapter->init (this);
10922
10923	unconst (mUSBController).createObject();
10924	mUSBController->init (this);
10925
10926	for (ULONG slot = 0; slot < ELEMENTS (mNetworkAdapters); slot ++)
10927	{
10928	unconst (mNetworkAdapters [slot]).createObject();
10929	mNetworkAdapters [slot]->init (this, slot);
10930	}
10931
10932	for (ULONG slot = 0; slot < ELEMENTS (mSerialPorts); slot ++)
10933	{
10934	unconst (mSerialPorts [slot]).createObject();
10935	mSerialPorts [slot]->init (this, slot);
10936	}
10937
10938	for (ULONG slot = 0; slot < ELEMENTS (mParallelPorts); slot ++)
10939	{
10940	unconst (mParallelPorts [slot]).createObject();
10941	mParallelPorts [slot]->init (this, slot);
10942	}
10943
10944	/* load hardware and harddisk settings */
10945
10946	HRESULT rc = loadHardware (aHWNode);
10947	if (SUCCEEDED (rc))
10948	rc = loadHardDisks (aHDAsNode, true /* aRegistered */, &mSnapshotId);
10949
10950	if (SUCCEEDED (rc))
10951	{
10952	/* commit all changes made during the initialization */
10953	commit();
10954	}
10955
10956	/* Confirm a successful initialization when it's the case */
10957	if (SUCCEEDED (rc))
10958	autoInitSpan.setSucceeded();
10959
10960	LogFlowThisFuncLeave();
10961	return rc;
10962	}
10963
10964	/**
10965	* Uninitializes this SnapshotMachine object.
10966	*/
10967	void SnapshotMachine::uninit()
10968	{
10969	LogFlowThisFuncEnter();
10970
10971	/* Enclose the state transition Ready->InUninit->NotReady */
10972	AutoUninitSpan autoUninitSpan (this);
10973	if (autoUninitSpan.uninitDone())
10974	return;
10975
10976	uninitDataAndChildObjects();
10977
10978	/* free the essential data structure last */
10979	mData.free();
10980
10981	unconst (mParent).setNull();
10982	unconst (mPeer).setNull();
10983
10984	LogFlowThisFuncLeave();
10985	}
10986
10987	// AutoLock::Lockable interface
10988	////////////////////////////////////////////////////////////////////////////////
10989
10990	/**
10991	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
10992	* with the primary Machine instance (mPeer).
10993	*/
10994	AutoLock::Handle *SnapshotMachine::lockHandle() const
10995	{
10996	AssertReturn (!mPeer.isNull(), NULL);
10997	return mPeer->lockHandle();
10998	}
10999
11000	// public methods only for internal purposes
11001	////////////////////////////////////////////////////////////////////////////////
11002
11003	/**
11004	* Called by the snapshot object associated with this SnapshotMachine when
11005	* snapshot data such as name or description is changed.
11006	*
11007	* @note Locks this object for writing.
11008	*/
11009	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
11010	{
11011	AutoLock alock (this);
11012
11013	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
11014
11015	/* inform callbacks */
11016	mParent->onSnapshotChange (mData->mUuid, aSnapshot->data().mId);
11017
11018	return S_OK;
11019	}

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 5777

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