MachineImpl.cpp@ 18622

Last change on this file since 18622 was 18621, checked in by vboxsync, 16 years ago
fix for xTracker #3762
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1	/* $Id: MachineImpl.cpp 18621 2009-04-02 07:26:15Z vboxsync $ */
2
3	/** @file
4	* Implementation of IMachine in VBoxSVC.
5	*/
6
7	/*
8	* Copyright (C) 2006-2009 Sun Microsystems, Inc.
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*
18	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
19	* Clara, CA 95054 USA or visit http://www.sun.com if you need
20	* additional information or have any questions.
21	*/
22
23	/* Make sure all the stdint.h macros are included - must come first! */
24	#ifndef __STDC_LIMIT_MACROS
25	# define __STDC_LIMIT_MACROS
26	#endif
27	#ifndef __STDC_CONSTANT_MACROS
28	# define __STDC_CONSTANT_MACROS
29	#endif
30
31	#ifdef VBOX_WITH_SYS_V_IPC_SESSION_WATCHER
32	# include <errno.h>
33	# include <sys/types.h>
34	# include <sys/stat.h>
35	# include <sys/ipc.h>
36	# include <sys/sem.h>
37	#endif
38
39	#include "VirtualBoxImpl.h"
40	#include "MachineImpl.h"
41	#include "ProgressImpl.h"
42	#include "HardDiskAttachmentImpl.h"
43	#include "USBControllerImpl.h"
44	#include "HostImpl.h"
45	#include "SystemPropertiesImpl.h"
46	#include "SharedFolderImpl.h"
47	#include "GuestOSTypeImpl.h"
48	#include "VirtualBoxErrorInfoImpl.h"
49	#include "GuestImpl.h"
50	#include "StorageControllerImpl.h"
51
52	#ifdef VBOX_WITH_USB
53	# include "USBProxyService.h"
54	#endif
55
56	#include "VirtualBoxXMLUtil.h"
57
58	#include "Logging.h"
59	#include "Performance.h"
60
61	#include <stdio.h>
62	#include <stdlib.h>
63
64	#include <iprt/path.h>
65	#include <iprt/dir.h>
66	#include <iprt/asm.h>
67	#include <iprt/process.h>
68	#include <iprt/cpputils.h>
69	#include <iprt/env.h>
70	#include <iprt/string.h>
71
72	#include <VBox/com/array.h>
73
74	#include <VBox/err.h>
75	#include <VBox/param.h>
76	#include <VBox/settings.h>
77
78	#ifdef VBOX_WITH_GUEST_PROPS
79	# include <VBox/HostServices/GuestPropertySvc.h>
80	# include <VBox/com/array.h>
81	#endif
82
83	#include <algorithm>
84
85	#include <typeinfo>
86
87	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
88	#define HOSTSUFF_EXE ".exe"
89	#else /* !RT_OS_WINDOWS */
90	#define HOSTSUFF_EXE ""
91	#endif /* !RT_OS_WINDOWS */
92
93	// defines / prototypes
94	/////////////////////////////////////////////////////////////////////////////
95
96	// globals
97	/////////////////////////////////////////////////////////////////////////////
98
99	/**
100	* @note The template is NOT completely valid according to VBOX_XML_SCHEMA
101	* (when loading a newly created settings file, validation will be turned off)
102	*/
103	static const char gDefaultMachineConfig[] =
104	{
105	"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" RTFILE_LINEFEED
106	"<!-- Sun VirtualBox Machine Configuration -->" RTFILE_LINEFEED
107	"<VirtualBox xmlns=\"" VBOX_XML_NAMESPACE "\" "
108	"version=\"" VBOX_XML_VERSION_FULL "\">" RTFILE_LINEFEED
109	"</VirtualBox>" RTFILE_LINEFEED
110	};
111
112	/**
113	* Progress callback handler for lengthy operations
114	* (corresponds to the FNRTPROGRESS typedef).
115	*
116	* @param uPercentage Completetion precentage (0-100).
117	* @param pvUser Pointer to the Progress instance.
118	*/
119	static DECLCALLBACK(int) progressCallback (unsigned uPercentage, void *pvUser)
120	{
121	Progress progress = static_cast<Progress>(pvUser);
122
123	/* update the progress object */
124	if (progress)
125	progress->setCurrentOperationProgress(uPercentage);
126
127	return VINF_SUCCESS;
128	}
129
130	/////////////////////////////////////////////////////////////////////////////
131	// Machine::Data structure
132	/////////////////////////////////////////////////////////////////////////////
133
134	Machine::Data::Data()
135	{
136	mRegistered = FALSE;
137	mAccessible = FALSE;
138	/* mUuid is initialized in Machine::init() */
139
140	mMachineState = MachineState_PoweredOff;
141	RTTimeNow (&mLastStateChange);
142
143	mMachineStateDeps = 0;
144	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
145	mMachineStateChangePending = 0;
146
147	mCurrentStateModified = TRUE;
148	mHandleCfgFile = NIL_RTFILE;
149
150	mSession.mPid = NIL_RTPROCESS;
151	mSession.mState = SessionState_Closed;
152	}
153
154	Machine::Data::~Data()
155	{
156	if (mMachineStateDepsSem != NIL_RTSEMEVENTMULTI)
157	{
158	RTSemEventMultiDestroy (mMachineStateDepsSem);
159	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
160	}
161	}
162
163	/////////////////////////////////////////////////////////////////////////////
164	// Machine::UserData structure
165	/////////////////////////////////////////////////////////////////////////////
166
167	Machine::UserData::UserData()
168	{
169	/* default values for a newly created machine */
170
171	mNameSync = TRUE;
172
173	/* mName, mOSTypeId, mSnapshotFolder, mSnapshotFolderFull are initialized in
174	* Machine::init() */
175	}
176
177	Machine::UserData::~UserData()
178	{
179	}
180
181	/////////////////////////////////////////////////////////////////////////////
182	// Machine::HWData structure
183	/////////////////////////////////////////////////////////////////////////////
184
185	Machine::HWData::HWData()
186	{
187	/* default values for a newly created machine */
188	mHWVersion = "2"; /** @todo get the default from the schema if that is possible. */
189	mMemorySize = 128;
190	mCPUCount = 1;
191	mMemoryBalloonSize = 0;
192	mStatisticsUpdateInterval = 0;
193	mVRAMSize = 8;
194	mAccelerate3DEnabled = false;
195	mMonitorCount = 1;
196	mHWVirtExEnabled = TSBool_False;
197	mHWVirtExNestedPagingEnabled = false;
198	mHWVirtExVPIDEnabled = false;
199	mPAEEnabled = false;
200	mPropertyServiceActive = false;
201
202	/* default boot order: floppy - DVD - HDD */
203	mBootOrder [0] = DeviceType_Floppy;
204	mBootOrder [1] = DeviceType_DVD;
205	mBootOrder [2] = DeviceType_HardDisk;
206	for (size_t i = 3; i < RT_ELEMENTS (mBootOrder); i++)
207	mBootOrder [i] = DeviceType_Null;
208
209	mClipboardMode = ClipboardMode_Bidirectional;
210	mGuestPropertyNotificationPatterns = "";
211	}
212
213	Machine::HWData::~HWData()
214	{
215	}
216
217	bool Machine::HWData::operator== (const HWData &that) const
218	{
219	if (this == &that)
220	return true;
221
222	if (mHWVersion != that.mHWVersion \|\|
223	mMemorySize != that.mMemorySize \|\|
224	mMemoryBalloonSize != that.mMemoryBalloonSize \|\|
225	mStatisticsUpdateInterval != that.mStatisticsUpdateInterval \|\|
226	mVRAMSize != that.mVRAMSize \|\|
227	mAccelerate3DEnabled != that.mAccelerate3DEnabled \|\|
228	mMonitorCount != that.mMonitorCount \|\|
229	mHWVirtExEnabled != that.mHWVirtExEnabled \|\|
230	mHWVirtExNestedPagingEnabled != that.mHWVirtExNestedPagingEnabled \|\|
231	mHWVirtExVPIDEnabled != that.mHWVirtExVPIDEnabled \|\|
232	mPAEEnabled != that.mPAEEnabled \|\|
233	mCPUCount != that.mCPUCount \|\|
234	mClipboardMode != that.mClipboardMode)
235	return false;
236
237	for (size_t i = 0; i < RT_ELEMENTS (mBootOrder); ++ i)
238	if (mBootOrder [i] != that.mBootOrder [i])
239	return false;
240
241	if (mSharedFolders.size() != that.mSharedFolders.size())
242	return false;
243
244	if (mSharedFolders.size() == 0)
245	return true;
246
247	/* Make copies to speed up comparison */
248	SharedFolderList folders = mSharedFolders;
249	SharedFolderList thatFolders = that.mSharedFolders;
250
251	SharedFolderList::iterator it = folders.begin();
252	while (it != folders.end())
253	{
254	bool found = false;
255	SharedFolderList::iterator thatIt = thatFolders.begin();
256	while (thatIt != thatFolders.end())
257	{
258	if ((it)->name() == (thatIt)->name() &&
259	RTPathCompare (Utf8Str ((*it)->hostPath()),
260	Utf8Str ((*thatIt)->hostPath())) == 0)
261	{
262	thatFolders.erase (thatIt);
263	found = true;
264	break;
265	}
266	else
267	++ thatIt;
268	}
269	if (found)
270	it = folders.erase (it);
271	else
272	return false;
273	}
274
275	Assert (folders.size() == 0 && thatFolders.size() == 0);
276
277	return true;
278	}
279
280	/////////////////////////////////////////////////////////////////////////////
281	// Machine::HDData structure
282	/////////////////////////////////////////////////////////////////////////////
283
284	Machine::HDData::HDData()
285	{
286	}
287
288	Machine::HDData::~HDData()
289	{
290	}
291
292	bool Machine::HDData::operator== (const HDData &that) const
293	{
294	if (this == &that)
295	return true;
296
297	if (mAttachments.size() != that.mAttachments.size())
298	return false;
299
300	if (mAttachments.size() == 0)
301	return true;
302
303	/* Make copies to speed up comparison */
304	AttachmentList atts = mAttachments;
305	AttachmentList thatAtts = that.mAttachments;
306
307	AttachmentList::iterator it = atts.begin();
308	while (it != atts.end())
309	{
310	bool found = false;
311	AttachmentList::iterator thatIt = thatAtts.begin();
312	while (thatIt != thatAtts.end())
313	{
314	if ((it)->controller() == (thatIt)->controller() &&
315	(it)->port() == (thatIt)->port() &&
316	(it)->device() == (thatIt)->device() &&
317	(it)->hardDisk().equalsTo ((thatIt)->hardDisk()))
318	{
319	thatAtts.erase (thatIt);
320	found = true;
321	break;
322	}
323	else
324	++ thatIt;
325	}
326	if (found)
327	it = atts.erase (it);
328	else
329	return false;
330	}
331
332	Assert (atts.size() == 0 && thatAtts.size() == 0);
333
334	return true;
335	}
336
337	/////////////////////////////////////////////////////////////////////////////
338	// Machine class
339	/////////////////////////////////////////////////////////////////////////////
340
341	// constructor / destructor
342	/////////////////////////////////////////////////////////////////////////////
343
344	Machine::Machine() : mType (IsMachine) {}
345
346	Machine::~Machine() {}
347
348	HRESULT Machine::FinalConstruct()
349	{
350	LogFlowThisFunc (("\n"));
351	return S_OK;
352	}
353
354	void Machine::FinalRelease()
355	{
356	LogFlowThisFunc (("\n"));
357	uninit();
358	}
359
360	/**
361	* Initializes the instance.
362	*
363	* @param aParent Associated parent object
364	* @param aConfigFile Local file system path to the VM settings file (can
365	* be relative to the VirtualBox config directory).
366	* @param aMode Init_New, Init_Existing or Init_Registered
367	* @param aName name for the machine when aMode is Init_New
368	* (ignored otherwise)
369	* @param aOsType OS Type of this machine
370	* @param aNameSync \|TRUE\| to automatically sync settings dir and file
371	* name with the machine name. \|FALSE\| is used for legacy
372	* machines where the file name is specified by the
373	* user and should never change. Used only in Init_New
374	* mode (ignored otherwise).
375	* @param aId UUID of the machine. Required for aMode==Init_Registered
376	* and optional for aMode==Init_New. Used for consistency
377	* check when aMode is Init_Registered; must match UUID
378	* stored in the settings file. Used for predefining the
379	* UUID of a VM when aMode is Init_New.
380	*
381	* @return Success indicator. if not S_OK, the machine object is invalid
382	*/
383	HRESULT Machine::init (VirtualBox *aParent, CBSTR aConfigFile,
384	InitMode aMode, CBSTR aName /* = NULL */,
385	GuestOSType aOsType / = NULL */,
386	BOOL aNameSync /* = TRUE */,
387	const Guid aId / = NULL */)
388	{
389	LogFlowThisFuncEnter();
390	LogFlowThisFunc (("aConfigFile='%ls', aMode=%d\n", aConfigFile, aMode));
391
392	AssertReturn (aParent, E_INVALIDARG);
393	AssertReturn (aConfigFile, E_INVALIDARG);
394	AssertReturn (aMode != Init_New \|\| (aName != NULL && *aName != '\0'),
395	E_INVALIDARG);
396	AssertReturn (aMode != Init_Registered \|\| aId != NULL, E_FAIL);
397
398	/* Enclose the state transition NotReady->InInit->Ready */
399	AutoInitSpan autoInitSpan (this);
400	AssertReturn (autoInitSpan.isOk(), E_FAIL);
401
402	HRESULT rc = S_OK;
403
404	/* share the parent weakly */
405	unconst (mParent) = aParent;
406
407	/* register with parent early, since uninit() will unconditionally
408	* unregister on failure */
409	mParent->addDependentChild (this);
410
411	/* allocate the essential machine data structure (the rest will be
412	* allocated later by initDataAndChildObjects() */
413	mData.allocate();
414
415	/* memorize the config file name (as provided) */
416	mData->mConfigFile = aConfigFile;
417
418	/* get the full file name */
419	Utf8Str configFileFull;
420	int vrc = mParent->calculateFullPath (Utf8Str (aConfigFile), configFileFull);
421	if (RT_FAILURE (vrc))
422	return setError (VBOX_E_FILE_ERROR,
423	tr ("Invalid machine settings file name '%ls' (%Rrc)"),
424	aConfigFile, vrc);
425
426	mData->mConfigFileFull = configFileFull;
427
428	if (aMode == Init_Registered)
429	{
430	mData->mRegistered = TRUE;
431
432	/* store the supplied UUID (will be used to check for UUID consistency
433	* in loadSettings() */
434	unconst (mData->mUuid) = *aId;
435	rc = registeredInit();
436	}
437	else
438	{
439	if (aMode == Init_Existing)
440	{
441	/* lock the settings file */
442	rc = lockConfig();
443	}
444	else if (aMode == Init_New)
445	{
446	/* check for the file existence */
447	RTFILE f = NIL_RTFILE;
448	int vrc = RTFileOpen (&f, configFileFull, RTFILE_O_READ);
449	if (RT_SUCCESS (vrc) \|\| vrc == VERR_SHARING_VIOLATION)
450	{
451	rc = setError (VBOX_E_FILE_ERROR,
452	tr ("Machine settings file '%s' already exists"),
453	configFileFull.raw());
454	if (RT_SUCCESS (vrc))
455	RTFileClose (f);
456	}
457	else
458	{
459	if (vrc != VERR_FILE_NOT_FOUND && vrc != VERR_PATH_NOT_FOUND)
460	rc = setError (VBOX_E_FILE_ERROR,
461	tr ("Invalid machine settings file name '%ls' (%Rrc)"),
462	mData->mConfigFileFull.raw(), vrc);
463	}
464	}
465	else
466	AssertFailed();
467
468	if (SUCCEEDED (rc))
469	rc = initDataAndChildObjects();
470
471	if (SUCCEEDED (rc))
472	{
473	/* set to true now to cause uninit() to call
474	* uninitDataAndChildObjects() on failure */
475	mData->mAccessible = TRUE;
476
477	if (aMode != Init_New)
478	{
479	rc = loadSettings (false /* aRegistered */);
480	}
481	else
482	{
483	/* create the machine UUID */
484	if (aId)
485	unconst (mData->mUuid) = *aId;
486	else
487	unconst (mData->mUuid).create();
488
489	/* memorize the provided new machine's name */
490	mUserData->mName = aName;
491	mUserData->mNameSync = aNameSync;
492
493	/* initialize the default snapshots folder
494	* (note: depends on the name value set above!) */
495	rc = COMSETTER(SnapshotFolder) (NULL);
496	AssertComRC (rc);
497
498	if (aOsType)
499	{
500	/* Store OS type */
501	mUserData->mOSTypeId = aOsType->id();
502
503	/* Apply HWVirtEx default; always true (used to rely on aOsType->recommendedVirtEx()) */
504	mHWData->mHWVirtExEnabled = TSBool_True;
505
506	/* Apply BIOS defaults */
507	mBIOSSettings->applyDefaults (aOsType);
508
509	/* Apply network adapters defaults */
510	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
511	mNetworkAdapters [slot]->applyDefaults (aOsType);
512	}
513
514	/* The default is that the VM has at least one IDE controller
515	* which can't be disabled (because of the DVD stuff which is
516	* not in the StorageDevice implementation at the moment)
517	*/
518	ComPtr<IStorageController> pController;
519	rc = AddStorageController(Bstr("IDE"), StorageBus_IDE, pController.asOutParam());
520	CheckComRCReturnRC(rc);
521	ComObjPtr<StorageController> ctl;
522	rc = getStorageControllerByName(Bstr("IDE"), ctl, true);
523	CheckComRCReturnRC(rc);
524	ctl->COMSETTER(ControllerType)(StorageControllerType_PIIX4);
525	}
526
527	/* commit all changes made during the initialization */
528	if (SUCCEEDED (rc))
529	commit();
530	}
531	}
532
533	/* Confirm a successful initialization when it's the case */
534	if (SUCCEEDED (rc))
535	{
536	if (mData->mAccessible)
537	autoInitSpan.setSucceeded();
538	else
539	autoInitSpan.setLimited();
540	}
541
542	LogFlowThisFunc (("mName='%ls', mRegistered=%RTbool, mAccessible=%RTbool "
543	"rc=%08X\n",
544	!!mUserData ? mUserData->mName.raw() : NULL,
545	mData->mRegistered, mData->mAccessible, rc));
546
547	LogFlowThisFuncLeave();
548
549	return rc;
550	}
551
552	/**
553	* Initializes the registered machine by loading the settings file.
554	* This method is separated from #init() in order to make it possible to
555	* retry the operation after VirtualBox startup instead of refusing to
556	* startup the whole VirtualBox server in case if the settings file of some
557	* registered VM is invalid or inaccessible.
558	*
559	* @note Must be always called from this object's write lock
560	* (unless called from #init() that doesn't need any locking).
561	* @note Locks the mUSBController method for writing.
562	* @note Subclasses must not call this method.
563	*/
564	HRESULT Machine::registeredInit()
565	{
566	AssertReturn (mType == IsMachine, E_FAIL);
567	AssertReturn (!mData->mUuid.isEmpty(), E_FAIL);
568	AssertReturn (!mData->mAccessible, E_FAIL);
569
570	HRESULT rc = lockConfig();
571
572	if (SUCCEEDED (rc))
573	rc = initDataAndChildObjects();
574
575	if (SUCCEEDED (rc))
576	{
577	/* Temporarily reset the registered flag in order to let setters
578	* potentially called from loadSettings() succeed (isMutable() used in
579	* all setters will return FALSE for a Machine instance if mRegistered
580	* is TRUE). */
581	mData->mRegistered = FALSE;
582
583	rc = loadSettings (true /* aRegistered */);
584
585	/* Restore the registered flag (even on failure) */
586	mData->mRegistered = TRUE;
587
588	if (FAILED (rc))
589	unlockConfig();
590	}
591
592	if (SUCCEEDED (rc))
593	{
594	/* Set mAccessible to TRUE only if we successfully locked and loaded
595	* the settings file */
596	mData->mAccessible = TRUE;
597
598	/* commit all changes made during loading the settings file */
599	commit();
600	}
601	else
602	{
603	/* If the machine is registered, then, instead of returning a
604	* failure, we mark it as inaccessible and set the result to
605	* success to give it a try later */
606
607	/* fetch the current error info */
608	mData->mAccessError = com::ErrorInfo();
609	LogWarning (("Machine {%RTuuid} is inaccessible! [%ls]\n",
610	mData->mUuid.raw(),
611	mData->mAccessError.getText().raw()));
612
613	/* rollback all changes */
614	rollback (false /* aNotify */);
615
616	/* uninitialize the common part to make sure all data is reset to
617	* default (null) values */
618	uninitDataAndChildObjects();
619
620	rc = S_OK;
621	}
622
623	return rc;
624	}
625
626	/**
627	* Uninitializes the instance.
628	* Called either from FinalRelease() or by the parent when it gets destroyed.
629	*
630	* @note The caller of this method must make sure that this object
631	* a) doesn't have active callers on the current thread and b) is not locked
632	* by the current thread; otherwise uninit() will hang either a) due to
633	* AutoUninitSpan waiting for a number of calls to drop to zero or b) due to
634	* a dead-lock caused by this thread waiting for all callers on the other
635	* threads are done but preventing them from doing so by holding a lock.
636	*/
637	void Machine::uninit()
638	{
639	LogFlowThisFuncEnter();
640
641	Assert (!isWriteLockOnCurrentThread());
642
643	/* Enclose the state transition Ready->InUninit->NotReady */
644	AutoUninitSpan autoUninitSpan (this);
645	if (autoUninitSpan.uninitDone())
646	return;
647
648	Assert (mType == IsMachine);
649	Assert (!!mData);
650
651	LogFlowThisFunc (("initFailed()=%d\n", autoUninitSpan.initFailed()));
652	LogFlowThisFunc (("mRegistered=%d\n", mData->mRegistered));
653
654	/* Enter this object lock because there may be a SessionMachine instance
655	* somewhere around, that shares our data and lock but doesn't use our
656	* addCaller()/removeCaller(), and it may be also accessing the same data
657	* members. mParent lock is necessary as well because of
658	* SessionMachine::uninit(), etc.
659	*/
660	AutoMultiWriteLock2 alock (mParent, this);
661
662	if (!mData->mSession.mMachine.isNull())
663	{
664	/* Theoretically, this can only happen if the VirtualBox server has been
665	* terminated while there were clients running that owned open direct
666	* sessions. Since in this case we are definitely called by
667	* VirtualBox::uninit(), we may be sure that SessionMachine::uninit()
668	* won't happen on the client watcher thread (because it does
669	* VirtualBox::addCaller() for the duration of the
670	* SessionMachine::checkForDeath() call, so that VirtualBox::uninit()
671	* cannot happen until the VirtualBox caller is released). This is
672	* important, because SessionMachine::uninit() cannot correctly operate
673	* after we return from this method (it expects the Machine instance is
674	* still valid). We'll call it ourselves below.
675	*/
676	LogWarningThisFunc (("Session machine is not NULL (%p), "
677	"the direct session is still open!\n",
678	(SessionMachine *) mData->mSession.mMachine));
679
680	if (Global::IsOnlineOrTransient (mData->mMachineState))
681	{
682	LogWarningThisFunc (("Setting state to Aborted!\n"));
683	/* set machine state using SessionMachine reimplementation */
684	static_cast <Machine *> (mData->mSession.mMachine)
685	->setMachineState (MachineState_Aborted);
686	}
687
688	/*
689	* Uninitialize SessionMachine using public uninit() to indicate
690	* an unexpected uninitialization.
691	*/
692	mData->mSession.mMachine->uninit();
693	/* SessionMachine::uninit() must set mSession.mMachine to null */
694	Assert (mData->mSession.mMachine.isNull());
695	}
696
697	/* the lock is no more necessary (SessionMachine is uninitialized) */
698	alock.leave();
699
700	/* make sure the configuration is unlocked */
701	unlockConfig();
702
703	if (isModified())
704	{
705	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
706	rollback (false /* aNotify */);
707	}
708
709	if (mData->mAccessible)
710	uninitDataAndChildObjects();
711
712	/* free the essential data structure last */
713	mData.free();
714
715	mParent->removeDependentChild (this);
716
717	LogFlowThisFuncLeave();
718	}
719
720	// IMachine properties
721	/////////////////////////////////////////////////////////////////////////////
722
723	STDMETHODIMP Machine::COMGETTER(Parent) (IVirtualBox **aParent)
724	{
725	CheckComArgOutPointerValid (aParent);
726
727	AutoLimitedCaller autoCaller (this);
728	CheckComRCReturnRC (autoCaller.rc());
729
730	/* mParent is constant during life time, no need to lock */
731	mParent.queryInterfaceTo (aParent);
732
733	return S_OK;
734	}
735
736	STDMETHODIMP Machine::COMGETTER(Accessible) (BOOL *aAccessible)
737	{
738	CheckComArgOutPointerValid (aAccessible);
739
740	AutoLimitedCaller autoCaller (this);
741	CheckComRCReturnRC (autoCaller.rc());
742
743	AutoWriteLock alock (this);
744
745	HRESULT rc = S_OK;
746
747	if (!mData->mAccessible)
748	{
749	/* try to initialize the VM once more if not accessible */
750
751	AutoReinitSpan autoReinitSpan (this);
752	AssertReturn (autoReinitSpan.isOk(), E_FAIL);
753
754	rc = registeredInit();
755
756	if (SUCCEEDED (rc) && mData->mAccessible)
757	{
758	autoReinitSpan.setSucceeded();
759
760	/* make sure interesting parties will notice the accessibility
761	* state change */
762	mParent->onMachineStateChange (mData->mUuid, mData->mMachineState);
763	mParent->onMachineDataChange (mData->mUuid);
764	}
765	}
766
767	if (SUCCEEDED (rc))
768	*aAccessible = mData->mAccessible;
769
770	return rc;
771	}
772
773	STDMETHODIMP Machine::COMGETTER(AccessError) (IVirtualBoxErrorInfo **aAccessError)
774	{
775	CheckComArgOutPointerValid (aAccessError);
776
777	AutoLimitedCaller autoCaller (this);
778	CheckComRCReturnRC (autoCaller.rc());
779
780	AutoReadLock alock (this);
781
782	if (mData->mAccessible \|\| !mData->mAccessError.isBasicAvailable())
783	{
784	/* return shortly */
785	aAccessError = NULL;
786	return S_OK;
787	}
788
789	HRESULT rc = S_OK;
790
791	ComObjPtr <VirtualBoxErrorInfo> errorInfo;
792	rc = errorInfo.createObject();
793	if (SUCCEEDED (rc))
794	{
795	errorInfo->init (mData->mAccessError.getResultCode(),
796	mData->mAccessError.getInterfaceID(),
797	mData->mAccessError.getComponent(),
798	mData->mAccessError.getText());
799	rc = errorInfo.queryInterfaceTo (aAccessError);
800	}
801
802	return rc;
803	}
804
805	STDMETHODIMP Machine::COMGETTER(Name) (BSTR *aName)
806	{
807	CheckComArgOutPointerValid (aName);
808
809	AutoCaller autoCaller (this);
810	CheckComRCReturnRC (autoCaller.rc());
811
812	AutoReadLock alock (this);
813
814	mUserData->mName.cloneTo (aName);
815
816	return S_OK;
817	}
818
819	STDMETHODIMP Machine::COMSETTER(Name) (IN_BSTR aName)
820	{
821	CheckComArgNotNull (aName);
822
823	if (!*aName)
824	return setError (E_INVALIDARG,
825	tr ("Machine name cannot be empty"));
826
827	AutoCaller autoCaller (this);
828	CheckComRCReturnRC (autoCaller.rc());
829
830	AutoWriteLock alock (this);
831
832	HRESULT rc = checkStateDependency (MutableStateDep);
833	CheckComRCReturnRC (rc);
834
835	mUserData.backup();
836	mUserData->mName = aName;
837
838	return S_OK;
839	}
840
841	STDMETHODIMP Machine::COMGETTER(Description) (BSTR *aDescription)
842	{
843	CheckComArgOutPointerValid (aDescription);
844
845	AutoCaller autoCaller (this);
846	CheckComRCReturnRC (autoCaller.rc());
847
848	AutoReadLock alock (this);
849
850	mUserData->mDescription.cloneTo (aDescription);
851
852	return S_OK;
853	}
854
855	STDMETHODIMP Machine::COMSETTER(Description) (IN_BSTR aDescription)
856	{
857	AutoCaller autoCaller (this);
858	CheckComRCReturnRC (autoCaller.rc());
859
860	AutoWriteLock alock (this);
861
862	HRESULT rc = checkStateDependency (MutableStateDep);
863	CheckComRCReturnRC (rc);
864
865	mUserData.backup();
866	mUserData->mDescription = aDescription;
867
868	return S_OK;
869	}
870
871	STDMETHODIMP Machine::COMGETTER(Id) (OUT_GUID aId)
872	{
873	CheckComArgOutPointerValid (aId);
874
875	AutoLimitedCaller autoCaller (this);
876	CheckComRCReturnRC (autoCaller.rc());
877
878	AutoReadLock alock (this);
879
880	mData->mUuid.cloneTo (aId);
881
882	return S_OK;
883	}
884
885	STDMETHODIMP Machine::COMGETTER(OSTypeId) (BSTR *aOSTypeId)
886	{
887	CheckComArgOutPointerValid (aOSTypeId);
888
889	AutoCaller autoCaller (this);
890	CheckComRCReturnRC (autoCaller.rc());
891
892	AutoReadLock alock (this);
893
894	mUserData->mOSTypeId.cloneTo (aOSTypeId);
895
896	return S_OK;
897	}
898
899	STDMETHODIMP Machine::COMSETTER(OSTypeId) (IN_BSTR aOSTypeId)
900	{
901	CheckComArgNotNull (aOSTypeId);
902
903	AutoCaller autoCaller (this);
904	CheckComRCReturnRC (autoCaller.rc());
905
906	/* look up the object by Id to check it is valid */
907	ComPtr <IGuestOSType> guestOSType;
908	HRESULT rc = mParent->GetGuestOSType (aOSTypeId,
909	guestOSType.asOutParam());
910	CheckComRCReturnRC (rc);
911
912	/* when setting, always use the "etalon" value for consistency -- lookup
913	* by ID is case-insensitive and the input value may have different case */
914	Bstr osTypeId;
915	rc = guestOSType->COMGETTER(Id) (osTypeId.asOutParam());
916	CheckComRCReturnRC (rc);
917
918	AutoWriteLock alock (this);
919
920	rc = checkStateDependency (MutableStateDep);
921	CheckComRCReturnRC (rc);
922
923	mUserData.backup();
924	mUserData->mOSTypeId = osTypeId;
925
926	return S_OK;
927	}
928
929	STDMETHODIMP Machine::COMGETTER(HardwareVersion) (BSTR *aHWVersion)
930	{
931	if (!aHWVersion)
932	return E_POINTER;
933
934	AutoCaller autoCaller (this);
935	CheckComRCReturnRC (autoCaller.rc());
936
937	AutoReadLock alock (this);
938
939	mHWData->mHWVersion.cloneTo (aHWVersion);
940
941	return S_OK;
942	}
943
944	STDMETHODIMP Machine::COMSETTER(HardwareVersion) (IN_BSTR aHWVersion)
945	{
946	/* check known version */
947	Utf8Str hwVersion = aHWVersion;
948	if ( hwVersion.compare ("1") != 0
949	&& hwVersion.compare ("2") != 0)
950	return setError (E_INVALIDARG,
951	tr ("Invalid hardware version: %ls\n"), aHWVersion);
952
953	AutoCaller autoCaller (this);
954	CheckComRCReturnRC (autoCaller.rc());
955
956	AutoWriteLock alock (this);
957
958	HRESULT rc = checkStateDependency (MutableStateDep);
959	CheckComRCReturnRC (rc);
960
961	mHWData.backup();
962	mHWData->mHWVersion = hwVersion;
963
964	return S_OK;
965	}
966
967	STDMETHODIMP Machine::COMGETTER(MemorySize) (ULONG *memorySize)
968	{
969	if (!memorySize)
970	return E_POINTER;
971
972	AutoCaller autoCaller (this);
973	CheckComRCReturnRC (autoCaller.rc());
974
975	AutoReadLock alock (this);
976
977	*memorySize = mHWData->mMemorySize;
978
979	return S_OK;
980	}
981
982	STDMETHODIMP Machine::COMSETTER(MemorySize) (ULONG memorySize)
983	{
984	/* check RAM limits */
985	if (memorySize < MM_RAM_MIN_IN_MB \|\|
986	memorySize > MM_RAM_MAX_IN_MB)
987	return setError (E_INVALIDARG,
988	tr ("Invalid RAM size: %lu MB (must be in range [%lu, %lu] MB)"),
989	memorySize, MM_RAM_MIN_IN_MB, MM_RAM_MAX_IN_MB);
990
991	AutoCaller autoCaller (this);
992	CheckComRCReturnRC (autoCaller.rc());
993
994	AutoWriteLock alock (this);
995
996	HRESULT rc = checkStateDependency (MutableStateDep);
997	CheckComRCReturnRC (rc);
998
999	mHWData.backup();
1000	mHWData->mMemorySize = memorySize;
1001
1002	return S_OK;
1003	}
1004
1005	STDMETHODIMP Machine::COMGETTER(CPUCount) (ULONG *CPUCount)
1006	{
1007	if (!CPUCount)
1008	return E_POINTER;
1009
1010	AutoCaller autoCaller (this);
1011	CheckComRCReturnRC (autoCaller.rc());
1012
1013	AutoReadLock alock (this);
1014
1015	*CPUCount = mHWData->mCPUCount;
1016
1017	return S_OK;
1018	}
1019
1020	STDMETHODIMP Machine::COMSETTER(CPUCount) (ULONG CPUCount)
1021	{
1022	/* check RAM limits */
1023	if (CPUCount < SchemaDefs::MinCPUCount \|\|
1024	CPUCount > SchemaDefs::MaxCPUCount)
1025	return setError (E_INVALIDARG,
1026	tr ("Invalid virtual CPU count: %lu (must be in range [%lu, %lu])"),
1027	CPUCount, SchemaDefs::MinCPUCount, SchemaDefs::MaxCPUCount);
1028
1029	AutoCaller autoCaller (this);
1030	CheckComRCReturnRC (autoCaller.rc());
1031
1032	AutoWriteLock alock (this);
1033
1034	HRESULT rc = checkStateDependency (MutableStateDep);
1035	CheckComRCReturnRC (rc);
1036
1037	mHWData.backup();
1038	mHWData->mCPUCount = CPUCount;
1039
1040	return S_OK;
1041	}
1042
1043	STDMETHODIMP Machine::COMGETTER(VRAMSize) (ULONG *memorySize)
1044	{
1045	if (!memorySize)
1046	return E_POINTER;
1047
1048	AutoCaller autoCaller (this);
1049	CheckComRCReturnRC (autoCaller.rc());
1050
1051	AutoReadLock alock (this);
1052
1053	*memorySize = mHWData->mVRAMSize;
1054
1055	return S_OK;
1056	}
1057
1058	STDMETHODIMP Machine::COMSETTER(VRAMSize) (ULONG memorySize)
1059	{
1060	/* check VRAM limits */
1061	if (memorySize < SchemaDefs::MinGuestVRAM \|\|
1062	memorySize > SchemaDefs::MaxGuestVRAM)
1063	return setError (E_INVALIDARG,
1064	tr ("Invalid VRAM size: %lu MB (must be in range [%lu, %lu] MB)"),
1065	memorySize, SchemaDefs::MinGuestVRAM, SchemaDefs::MaxGuestVRAM);
1066
1067	AutoCaller autoCaller (this);
1068	CheckComRCReturnRC (autoCaller.rc());
1069
1070	AutoWriteLock alock (this);
1071
1072	HRESULT rc = checkStateDependency (MutableStateDep);
1073	CheckComRCReturnRC (rc);
1074
1075	mHWData.backup();
1076	mHWData->mVRAMSize = memorySize;
1077
1078	return S_OK;
1079	}
1080
1081	/** @todo this method should not be public */
1082	STDMETHODIMP Machine::COMGETTER(MemoryBalloonSize) (ULONG *memoryBalloonSize)
1083	{
1084	if (!memoryBalloonSize)
1085	return E_POINTER;
1086
1087	AutoCaller autoCaller (this);
1088	CheckComRCReturnRC (autoCaller.rc());
1089
1090	AutoReadLock alock (this);
1091
1092	*memoryBalloonSize = mHWData->mMemoryBalloonSize;
1093
1094	return S_OK;
1095	}
1096
1097	/** @todo this method should not be public */
1098	STDMETHODIMP Machine::COMSETTER(MemoryBalloonSize) (ULONG memoryBalloonSize)
1099	{
1100	/* check limits */
1101	if (memoryBalloonSize >= VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize))
1102	return setError (E_INVALIDARG,
1103	tr ("Invalid memory balloon size: %lu MB (must be in range [%lu, %lu] MB)"),
1104	memoryBalloonSize, 0, VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize));
1105
1106	AutoCaller autoCaller (this);
1107	CheckComRCReturnRC (autoCaller.rc());
1108
1109	AutoWriteLock alock (this);
1110
1111	HRESULT rc = checkStateDependency (MutableStateDep);
1112	CheckComRCReturnRC (rc);
1113
1114	mHWData.backup();
1115	mHWData->mMemoryBalloonSize = memoryBalloonSize;
1116
1117	return S_OK;
1118	}
1119
1120	/** @todo this method should not be public */
1121	STDMETHODIMP Machine::COMGETTER(StatisticsUpdateInterval) (ULONG *statisticsUpdateInterval)
1122	{
1123	if (!statisticsUpdateInterval)
1124	return E_POINTER;
1125
1126	AutoCaller autoCaller (this);
1127	CheckComRCReturnRC (autoCaller.rc());
1128
1129	AutoReadLock alock (this);
1130
1131	*statisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
1132
1133	return S_OK;
1134	}
1135
1136	/** @todo this method should not be public */
1137	STDMETHODIMP Machine::COMSETTER(StatisticsUpdateInterval) (ULONG statisticsUpdateInterval)
1138	{
1139	AutoCaller autoCaller (this);
1140	CheckComRCReturnRC (autoCaller.rc());
1141
1142	AutoWriteLock alock (this);
1143
1144	HRESULT rc = checkStateDependency (MutableStateDep);
1145	CheckComRCReturnRC (rc);
1146
1147	mHWData.backup();
1148	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
1149
1150	return S_OK;
1151	}
1152
1153
1154	STDMETHODIMP Machine::COMGETTER(Accelerate3DEnabled)(BOOL *enabled)
1155	{
1156	if (!enabled)
1157	return E_POINTER;
1158
1159	AutoCaller autoCaller (this);
1160	CheckComRCReturnRC (autoCaller.rc());
1161
1162	AutoReadLock alock (this);
1163
1164	*enabled = mHWData->mAccelerate3DEnabled;
1165
1166	return S_OK;
1167	}
1168
1169	STDMETHODIMP Machine::COMSETTER(Accelerate3DEnabled)(BOOL enable)
1170	{
1171	AutoCaller autoCaller (this);
1172	CheckComRCReturnRC (autoCaller.rc());
1173
1174	AutoWriteLock alock (this);
1175
1176	HRESULT rc = checkStateDependency (MutableStateDep);
1177	CheckComRCReturnRC (rc);
1178
1179	/** @todo check validity! */
1180
1181	mHWData.backup();
1182	mHWData->mAccelerate3DEnabled = enable;
1183
1184	return S_OK;
1185	}
1186
1187
1188	STDMETHODIMP Machine::COMGETTER(MonitorCount) (ULONG *monitorCount)
1189	{
1190	if (!monitorCount)
1191	return E_POINTER;
1192
1193	AutoCaller autoCaller (this);
1194	CheckComRCReturnRC (autoCaller.rc());
1195
1196	AutoReadLock alock (this);
1197
1198	*monitorCount = mHWData->mMonitorCount;
1199
1200	return S_OK;
1201	}
1202
1203	STDMETHODIMP Machine::COMSETTER(MonitorCount) (ULONG monitorCount)
1204	{
1205	/* make sure monitor count is a sensible number */
1206	if (monitorCount < 1 \|\| monitorCount > SchemaDefs::MaxGuestMonitors)
1207	return setError (E_INVALIDARG,
1208	tr ("Invalid monitor count: %lu (must be in range [%lu, %lu])"),
1209	monitorCount, 1, SchemaDefs::MaxGuestMonitors);
1210
1211	AutoCaller autoCaller (this);
1212	CheckComRCReturnRC (autoCaller.rc());
1213
1214	AutoWriteLock alock (this);
1215
1216	HRESULT rc = checkStateDependency (MutableStateDep);
1217	CheckComRCReturnRC (rc);
1218
1219	mHWData.backup();
1220	mHWData->mMonitorCount = monitorCount;
1221
1222	return S_OK;
1223	}
1224
1225	STDMETHODIMP Machine::COMGETTER(BIOSSettings)(IBIOSSettings **biosSettings)
1226	{
1227	if (!biosSettings)
1228	return E_POINTER;
1229
1230	AutoCaller autoCaller (this);
1231	CheckComRCReturnRC (autoCaller.rc());
1232
1233	/* mBIOSSettings is constant during life time, no need to lock */
1234	mBIOSSettings.queryInterfaceTo (biosSettings);
1235
1236	return S_OK;
1237	}
1238
1239	STDMETHODIMP Machine::COMGETTER(HWVirtExEnabled)(TSBool_T *enabled)
1240	{
1241	if (!enabled)
1242	return E_POINTER;
1243
1244	AutoCaller autoCaller (this);
1245	CheckComRCReturnRC (autoCaller.rc());
1246
1247	AutoReadLock alock (this);
1248
1249	*enabled = mHWData->mHWVirtExEnabled;
1250
1251	return S_OK;
1252	}
1253
1254	STDMETHODIMP Machine::COMSETTER(HWVirtExEnabled)(TSBool_T enable)
1255	{
1256	AutoCaller autoCaller (this);
1257	CheckComRCReturnRC (autoCaller.rc());
1258
1259	AutoWriteLock alock (this);
1260
1261	HRESULT rc = checkStateDependency (MutableStateDep);
1262	CheckComRCReturnRC (rc);
1263
1264	/** @todo check validity! */
1265
1266	mHWData.backup();
1267	mHWData->mHWVirtExEnabled = enable;
1268
1269	return S_OK;
1270	}
1271
1272	STDMETHODIMP Machine::COMGETTER(HWVirtExNestedPagingEnabled)(BOOL *enabled)
1273	{
1274	if (!enabled)
1275	return E_POINTER;
1276
1277	AutoCaller autoCaller (this);
1278	CheckComRCReturnRC (autoCaller.rc());
1279
1280	AutoReadLock alock (this);
1281
1282	*enabled = mHWData->mHWVirtExNestedPagingEnabled;
1283
1284	return S_OK;
1285	}
1286
1287	STDMETHODIMP Machine::COMSETTER(HWVirtExNestedPagingEnabled)(BOOL enable)
1288	{
1289	AutoCaller autoCaller (this);
1290	CheckComRCReturnRC (autoCaller.rc());
1291
1292	AutoWriteLock alock (this);
1293
1294	HRESULT rc = checkStateDependency (MutableStateDep);
1295	CheckComRCReturnRC (rc);
1296
1297	/** @todo check validity! */
1298
1299	mHWData.backup();
1300	mHWData->mHWVirtExNestedPagingEnabled = enable;
1301
1302	return S_OK;
1303	}
1304
1305	STDMETHODIMP Machine::COMGETTER(HWVirtExVPIDEnabled)(BOOL *enabled)
1306	{
1307	if (!enabled)
1308	return E_POINTER;
1309
1310	AutoCaller autoCaller (this);
1311	CheckComRCReturnRC (autoCaller.rc());
1312
1313	AutoReadLock alock (this);
1314
1315	*enabled = mHWData->mHWVirtExVPIDEnabled;
1316
1317	return S_OK;
1318	}
1319
1320	STDMETHODIMP Machine::COMSETTER(HWVirtExVPIDEnabled)(BOOL enable)
1321	{
1322	AutoCaller autoCaller (this);
1323	CheckComRCReturnRC (autoCaller.rc());
1324
1325	AutoWriteLock alock (this);
1326
1327	HRESULT rc = checkStateDependency (MutableStateDep);
1328	CheckComRCReturnRC (rc);
1329
1330	/** @todo check validity! */
1331
1332	mHWData.backup();
1333	mHWData->mHWVirtExVPIDEnabled = enable;
1334
1335	return S_OK;
1336	}
1337
1338	STDMETHODIMP Machine::COMGETTER(PAEEnabled)(BOOL *enabled)
1339	{
1340	if (!enabled)
1341	return E_POINTER;
1342
1343	AutoCaller autoCaller (this);
1344	CheckComRCReturnRC (autoCaller.rc());
1345
1346	AutoReadLock alock (this);
1347
1348	*enabled = mHWData->mPAEEnabled;
1349
1350	return S_OK;
1351	}
1352
1353	STDMETHODIMP Machine::COMSETTER(PAEEnabled)(BOOL enable)
1354	{
1355	AutoCaller autoCaller (this);
1356	CheckComRCReturnRC (autoCaller.rc());
1357
1358	AutoWriteLock alock (this);
1359
1360	HRESULT rc = checkStateDependency (MutableStateDep);
1361	CheckComRCReturnRC (rc);
1362
1363	/** @todo check validity! */
1364
1365	mHWData.backup();
1366	mHWData->mPAEEnabled = enable;
1367
1368	return S_OK;
1369	}
1370
1371	STDMETHODIMP Machine::COMGETTER(SnapshotFolder) (BSTR *aSnapshotFolder)
1372	{
1373	CheckComArgOutPointerValid (aSnapshotFolder);
1374
1375	AutoCaller autoCaller (this);
1376	CheckComRCReturnRC (autoCaller.rc());
1377
1378	AutoReadLock alock (this);
1379
1380	mUserData->mSnapshotFolderFull.cloneTo (aSnapshotFolder);
1381
1382	return S_OK;
1383	}
1384
1385	STDMETHODIMP Machine::COMSETTER(SnapshotFolder) (IN_BSTR aSnapshotFolder)
1386	{
1387	/* @todo (r=dmik):
1388	* 1. Allow to change the name of the snapshot folder containing snapshots
1389	* 2. Rename the folder on disk instead of just changing the property
1390	* value (to be smart and not to leave garbage). Note that it cannot be
1391	* done here because the change may be rolled back. Thus, the right
1392	* place is #saveSettings().
1393	*/
1394
1395	AutoCaller autoCaller (this);
1396	CheckComRCReturnRC (autoCaller.rc());
1397
1398	AutoWriteLock alock (this);
1399
1400	HRESULT rc = checkStateDependency (MutableStateDep);
1401	CheckComRCReturnRC (rc);
1402
1403	if (!mData->mCurrentSnapshot.isNull())
1404	return setError (E_FAIL,
1405	tr ("The snapshot folder of a machine with snapshots cannot "
1406	"be changed (please discard all snapshots first)"));
1407
1408	Utf8Str snapshotFolder = aSnapshotFolder;
1409
1410	if (snapshotFolder.isEmpty())
1411	{
1412	if (isInOwnDir())
1413	{
1414	/* the default snapshots folder is 'Snapshots' in the machine dir */
1415	snapshotFolder = Utf8Str ("Snapshots");
1416	}
1417	else
1418	{
1419	/* the default snapshots folder is {UUID}, for backwards
1420	* compatibility and to resolve conflicts */
1421	snapshotFolder = Utf8StrFmt ("{%RTuuid}", mData->mUuid.raw());
1422	}
1423	}
1424
1425	int vrc = calculateFullPath (snapshotFolder, snapshotFolder);
1426	if (RT_FAILURE (vrc))
1427	return setError (E_FAIL,
1428	tr ("Invalid snapshot folder '%ls' (%Rrc)"),
1429	aSnapshotFolder, vrc);
1430
1431	mUserData.backup();
1432	mUserData->mSnapshotFolder = aSnapshotFolder;
1433	mUserData->mSnapshotFolderFull = snapshotFolder;
1434
1435	return S_OK;
1436	}
1437
1438	STDMETHODIMP Machine::
1439	COMGETTER(HardDiskAttachments) (ComSafeArrayOut(IHardDiskAttachment *, aAttachments))
1440	{
1441	if (ComSafeArrayOutIsNull (aAttachments))
1442	return E_POINTER;
1443
1444	AutoCaller autoCaller (this);
1445	CheckComRCReturnRC (autoCaller.rc());
1446
1447	AutoReadLock alock (this);
1448
1449	SafeIfaceArray<IHardDiskAttachment> attachments (mHDData->mAttachments);
1450	attachments.detachTo (ComSafeArrayOutArg (aAttachments));
1451
1452	return S_OK;
1453	}
1454
1455	STDMETHODIMP Machine::COMGETTER(VRDPServer)(IVRDPServer **vrdpServer)
1456	{
1457	#ifdef VBOX_WITH_VRDP
1458	if (!vrdpServer)
1459	return E_POINTER;
1460
1461	AutoCaller autoCaller (this);
1462	CheckComRCReturnRC (autoCaller.rc());
1463
1464	AutoReadLock alock (this);
1465
1466	Assert (!!mVRDPServer);
1467	mVRDPServer.queryInterfaceTo (vrdpServer);
1468
1469	return S_OK;
1470	#else
1471	ReturnComNotImplemented();
1472	#endif
1473	}
1474
1475	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1476	{
1477	if (!dvdDrive)
1478	return E_POINTER;
1479
1480	AutoCaller autoCaller (this);
1481	CheckComRCReturnRC (autoCaller.rc());
1482
1483	AutoReadLock alock (this);
1484
1485	Assert (!!mDVDDrive);
1486	mDVDDrive.queryInterfaceTo (dvdDrive);
1487	return S_OK;
1488	}
1489
1490	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1491	{
1492	if (!floppyDrive)
1493	return E_POINTER;
1494
1495	AutoCaller autoCaller (this);
1496	CheckComRCReturnRC (autoCaller.rc());
1497
1498	AutoReadLock alock (this);
1499
1500	Assert (!!mFloppyDrive);
1501	mFloppyDrive.queryInterfaceTo (floppyDrive);
1502	return S_OK;
1503	}
1504
1505	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1506	{
1507	if (!audioAdapter)
1508	return E_POINTER;
1509
1510	AutoCaller autoCaller (this);
1511	CheckComRCReturnRC (autoCaller.rc());
1512
1513	AutoReadLock alock (this);
1514
1515	mAudioAdapter.queryInterfaceTo (audioAdapter);
1516	return S_OK;
1517	}
1518
1519	STDMETHODIMP Machine::COMGETTER(USBController) (IUSBController **aUSBController)
1520	{
1521	#ifdef VBOX_WITH_USB
1522	CheckComArgOutPointerValid (aUSBController);
1523
1524	AutoCaller autoCaller (this);
1525	CheckComRCReturnRC (autoCaller.rc());
1526
1527	MultiResult rc = mParent->host()->checkUSBProxyService();
1528	CheckComRCReturnRC (rc);
1529
1530	AutoReadLock alock (this);
1531
1532	return rc = mUSBController.queryInterfaceTo (aUSBController);
1533	#else
1534	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1535	* extended error info to indicate that USB is simply not available
1536	* (w/o treting it as a failure), for example, as in OSE */
1537	ReturnComNotImplemented();
1538	#endif
1539	}
1540
1541	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *aFilePath)
1542	{
1543	CheckComArgOutPointerValid (aFilePath);
1544
1545	AutoLimitedCaller autoCaller (this);
1546	CheckComRCReturnRC (autoCaller.rc());
1547
1548	AutoReadLock alock (this);
1549
1550	mData->mConfigFileFull.cloneTo (aFilePath);
1551	return S_OK;
1552	}
1553
1554	STDMETHODIMP Machine::
1555	COMGETTER(SettingsFileVersion) (BSTR *aSettingsFileVersion)
1556	{
1557	CheckComArgOutPointerValid (aSettingsFileVersion);
1558
1559	AutoCaller autoCaller (this);
1560	CheckComRCReturnRC (autoCaller.rc());
1561
1562	AutoReadLock alock (this);
1563
1564	mData->mSettingsFileVersion.cloneTo (aSettingsFileVersion);
1565	return S_OK;
1566	}
1567
1568	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *aModified)
1569	{
1570	CheckComArgOutPointerValid (aModified);
1571
1572	AutoCaller autoCaller (this);
1573	CheckComRCReturnRC (autoCaller.rc());
1574
1575	AutoWriteLock alock (this);
1576
1577	HRESULT rc = checkStateDependency (MutableStateDep);
1578	CheckComRCReturnRC (rc);
1579
1580	if (!isConfigLocked())
1581	{
1582	/*
1583	* if we're ready and isConfigLocked() is FALSE then it means
1584	* that no config file exists yet, so always return TRUE
1585	*/
1586	*aModified = TRUE;
1587	}
1588	else
1589	{
1590	*aModified = isModified();
1591	}
1592
1593	return S_OK;
1594	}
1595
1596	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1597	{
1598	CheckComArgOutPointerValid (aSessionState);
1599
1600	AutoCaller autoCaller (this);
1601	CheckComRCReturnRC (autoCaller.rc());
1602
1603	AutoReadLock alock (this);
1604
1605	*aSessionState = mData->mSession.mState;
1606
1607	return S_OK;
1608	}
1609
1610	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1611	{
1612	CheckComArgOutPointerValid (aSessionType);
1613
1614	AutoCaller autoCaller (this);
1615	CheckComRCReturnRC (autoCaller.rc());
1616
1617	AutoReadLock alock (this);
1618
1619	mData->mSession.mType.cloneTo (aSessionType);
1620
1621	return S_OK;
1622	}
1623
1624	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1625	{
1626	CheckComArgOutPointerValid (aSessionPid);
1627
1628	AutoCaller autoCaller (this);
1629	CheckComRCReturnRC (autoCaller.rc());
1630
1631	AutoReadLock alock (this);
1632
1633	*aSessionPid = mData->mSession.mPid;
1634
1635	return S_OK;
1636	}
1637
1638	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1639	{
1640	if (!machineState)
1641	return E_POINTER;
1642
1643	AutoCaller autoCaller (this);
1644	CheckComRCReturnRC (autoCaller.rc());
1645
1646	AutoReadLock alock (this);
1647
1648	*machineState = mData->mMachineState;
1649
1650	return S_OK;
1651	}
1652
1653	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1654	{
1655	CheckComArgOutPointerValid (aLastStateChange);
1656
1657	AutoCaller autoCaller (this);
1658	CheckComRCReturnRC (autoCaller.rc());
1659
1660	AutoReadLock alock (this);
1661
1662	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1663
1664	return S_OK;
1665	}
1666
1667	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1668	{
1669	CheckComArgOutPointerValid (aStateFilePath);
1670
1671	AutoCaller autoCaller (this);
1672	CheckComRCReturnRC (autoCaller.rc());
1673
1674	AutoReadLock alock (this);
1675
1676	mSSData->mStateFilePath.cloneTo (aStateFilePath);
1677
1678	return S_OK;
1679	}
1680
1681	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1682	{
1683	CheckComArgOutPointerValid (aLogFolder);
1684
1685	AutoCaller autoCaller (this);
1686	AssertComRCReturnRC (autoCaller.rc());
1687
1688	AutoReadLock alock (this);
1689
1690	Utf8Str logFolder;
1691	getLogFolder (logFolder);
1692
1693	Bstr (logFolder).cloneTo (aLogFolder);
1694
1695	return S_OK;
1696	}
1697
1698	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1699	{
1700	CheckComArgOutPointerValid (aCurrentSnapshot);
1701
1702	AutoCaller autoCaller (this);
1703	CheckComRCReturnRC (autoCaller.rc());
1704
1705	AutoReadLock alock (this);
1706
1707	mData->mCurrentSnapshot.queryInterfaceTo (aCurrentSnapshot);
1708
1709	return S_OK;
1710	}
1711
1712	STDMETHODIMP Machine::COMGETTER(SnapshotCount) (ULONG *aSnapshotCount)
1713	{
1714	CheckComArgOutPointerValid (aSnapshotCount);
1715
1716	AutoCaller autoCaller (this);
1717	CheckComRCReturnRC (autoCaller.rc());
1718
1719	AutoReadLock alock (this);
1720
1721	*aSnapshotCount = !mData->mFirstSnapshot ? 0 :
1722	mData->mFirstSnapshot->descendantCount() + 1 /* self */;
1723
1724	return S_OK;
1725	}
1726
1727	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1728	{
1729	CheckComArgOutPointerValid (aCurrentStateModified);
1730
1731	AutoCaller autoCaller (this);
1732	CheckComRCReturnRC (autoCaller.rc());
1733
1734	AutoReadLock alock (this);
1735
1736	/* Note: for machines with no snapshots, we always return FALSE
1737	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1738	* reasons :) */
1739
1740	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1741	mData->mCurrentStateModified;
1742
1743	return S_OK;
1744	}
1745
1746	STDMETHODIMP
1747	Machine::COMGETTER(SharedFolders) (ComSafeArrayOut (ISharedFolder *, aSharedFolders))
1748	{
1749	CheckComArgOutSafeArrayPointerValid (aSharedFolders);
1750
1751	AutoCaller autoCaller (this);
1752	CheckComRCReturnRC (autoCaller.rc());
1753
1754	AutoReadLock alock (this);
1755
1756	SafeIfaceArray <ISharedFolder> folders (mHWData->mSharedFolders);
1757	folders.detachTo (ComSafeArrayOutArg(aSharedFolders));
1758
1759	return S_OK;
1760	}
1761
1762	STDMETHODIMP
1763	Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1764	{
1765	CheckComArgOutPointerValid (aClipboardMode);
1766
1767	AutoCaller autoCaller (this);
1768	CheckComRCReturnRC (autoCaller.rc());
1769
1770	AutoReadLock alock (this);
1771
1772	*aClipboardMode = mHWData->mClipboardMode;
1773
1774	return S_OK;
1775	}
1776
1777	STDMETHODIMP
1778	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
1779	{
1780	AutoCaller autoCaller (this);
1781	CheckComRCReturnRC (autoCaller.rc());
1782
1783	AutoWriteLock alock (this);
1784
1785	HRESULT rc = checkStateDependency (MutableStateDep);
1786	CheckComRCReturnRC (rc);
1787
1788	mHWData.backup();
1789	mHWData->mClipboardMode = aClipboardMode;
1790
1791	return S_OK;
1792	}
1793
1794	STDMETHODIMP
1795	Machine::COMGETTER(GuestPropertyNotificationPatterns) (BSTR *aPatterns)
1796	{
1797	CheckComArgOutPointerValid (aPatterns);
1798
1799	AutoCaller autoCaller (this);
1800	CheckComRCReturnRC (autoCaller.rc());
1801
1802	AutoReadLock alock (this);
1803
1804	mHWData->mGuestPropertyNotificationPatterns.cloneTo (aPatterns);
1805
1806	return RT_LIKELY (aPatterns != NULL) ? S_OK : E_OUTOFMEMORY;
1807	}
1808
1809	STDMETHODIMP
1810	Machine::COMSETTER(GuestPropertyNotificationPatterns) (IN_BSTR aPatterns)
1811	{
1812	AssertLogRelReturn (VALID_PTR (aPatterns), E_POINTER);
1813	AutoCaller autoCaller (this);
1814	CheckComRCReturnRC (autoCaller.rc());
1815
1816	AutoWriteLock alock (this);
1817
1818	HRESULT rc = checkStateDependency (MutableStateDep);
1819	CheckComRCReturnRC (rc);
1820
1821	mHWData.backup();
1822	mHWData->mGuestPropertyNotificationPatterns = aPatterns;
1823
1824	return RT_LIKELY (!mHWData->mGuestPropertyNotificationPatterns.isNull())
1825	? S_OK : E_OUTOFMEMORY;
1826	}
1827
1828	STDMETHODIMP
1829	Machine::COMGETTER(StorageControllers) (ComSafeArrayOut(IStorageController *, aStorageControllers))
1830	{
1831	CheckComArgOutSafeArrayPointerValid (aStorageControllers);
1832
1833	AutoCaller autoCaller (this);
1834	CheckComRCReturnRC (autoCaller.rc());
1835
1836	AutoReadLock alock (this);
1837
1838	SafeIfaceArray <IStorageController> ctrls (*mStorageControllers.data());
1839	ctrls.detachTo (ComSafeArrayOutArg(aStorageControllers));
1840
1841	return S_OK;
1842	}
1843
1844	// IMachine methods
1845	/////////////////////////////////////////////////////////////////////////////
1846
1847	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
1848	{
1849	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1850	return setError (E_INVALIDARG,
1851	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1852	aPosition, SchemaDefs::MaxBootPosition);
1853
1854	if (aDevice == DeviceType_USB)
1855	return setError (E_NOTIMPL,
1856	tr ("Booting from USB device is currently not supported"));
1857
1858	AutoCaller autoCaller (this);
1859	CheckComRCReturnRC (autoCaller.rc());
1860
1861	AutoWriteLock alock (this);
1862
1863	HRESULT rc = checkStateDependency (MutableStateDep);
1864	CheckComRCReturnRC (rc);
1865
1866	mHWData.backup();
1867	mHWData->mBootOrder [aPosition - 1] = aDevice;
1868
1869	return S_OK;
1870	}
1871
1872	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
1873	{
1874	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1875	return setError (E_INVALIDARG,
1876	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1877	aPosition, SchemaDefs::MaxBootPosition);
1878
1879	AutoCaller autoCaller (this);
1880	CheckComRCReturnRC (autoCaller.rc());
1881
1882	AutoReadLock alock (this);
1883
1884	*aDevice = mHWData->mBootOrder [aPosition - 1];
1885
1886	return S_OK;
1887	}
1888
1889	STDMETHODIMP Machine::AttachHardDisk(IN_GUID aId,
1890	IN_BSTR aControllerName, LONG aControllerPort,
1891	LONG aDevice)
1892	{
1893	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
1894	aControllerName, aControllerPort, aDevice));
1895
1896	AutoCaller autoCaller (this);
1897	CheckComRCReturnRC (autoCaller.rc());
1898
1899	/* VirtualBox::findHardDisk() need read lock; also we want to make sure the
1900	* hard disk object we pick up doesn't get unregistered before we finish. */
1901	AutoReadLock vboxLock (mParent);
1902	AutoWriteLock alock (this);
1903
1904	HRESULT rc = checkStateDependency (MutableStateDep);
1905	CheckComRCReturnRC (rc);
1906
1907	/// @todo NEWMEDIA implicit machine registration
1908	if (!mData->mRegistered)
1909	return setError (VBOX_E_INVALID_OBJECT_STATE,
1910	tr ("Cannot attach hard disks to an unregistered machine"));
1911
1912	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
1913
1914	if (Global::IsOnlineOrTransient (mData->mMachineState))
1915	return setError (VBOX_E_INVALID_VM_STATE,
1916	tr ("Invalid machine state: %d"), mData->mMachineState);
1917
1918	/* Check for an existing controller. */
1919	ComObjPtr<StorageController> ctl;
1920	rc = getStorageControllerByName(aControllerName, ctl, true /* aSetError */);
1921	CheckComRCReturnRC(rc);
1922
1923	/* check that the port and device are not out of range. */
1924	ULONG portCount;
1925	ULONG devicesPerPort;
1926	rc = ctl->COMGETTER(PortCount)(&portCount);
1927	CheckComRCReturnRC(rc);
1928	rc = ctl->COMGETTER(MaxDevicesPerPortCount)(&devicesPerPort);
1929	CheckComRCReturnRC(rc);
1930
1931	if ( (aControllerPort < 0)
1932	\|\| (aControllerPort >= (LONG)portCount)
1933	\|\| (aDevice < 0)
1934	\|\| (aDevice >= (LONG)devicesPerPort)
1935	)
1936	return setError (E_INVALIDARG,
1937	tr ("The port and/or count parameter are out of range [%lu:%lu]"),
1938	portCount, devicesPerPort);
1939
1940	/* check if the device slot is already busy */
1941	HDData::AttachmentList::const_iterator it =
1942	std::find_if (mHDData->mAttachments.begin(),
1943	mHDData->mAttachments.end(),
1944	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
1945
1946	if (it != mHDData->mAttachments.end())
1947	{
1948	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
1949	AutoReadLock hdLock (hd);
1950	return setError (VBOX_E_OBJECT_IN_USE,
1951	tr ("Hard disk '%ls' is already attached to device slot %d on "
1952	"port %d of controller '%ls' of this virtual machine"),
1953	hd->locationFull().raw(), aDevice, aControllerPort, aControllerName);
1954	}
1955
1956	Guid id = aId;
1957
1958	/* find a hard disk by UUID */
1959	ComObjPtr<HardDisk> hd;
1960	rc = mParent->findHardDisk(&id, NULL, true /* aSetError */, &hd);
1961	CheckComRCReturnRC (rc);
1962
1963	AutoCaller hdCaller (hd);
1964	CheckComRCReturnRC (hdCaller.rc());
1965
1966	AutoWriteLock hdLock (hd);
1967
1968	if (std::find_if (mHDData->mAttachments.begin(),
1969	mHDData->mAttachments.end(),
1970	HardDiskAttachment::RefersTo (hd)) !=
1971	mHDData->mAttachments.end())
1972	{
1973	return setError (VBOX_E_OBJECT_IN_USE,
1974	tr ("Hard disk '%ls' is already attached to this virtual machine"),
1975	hd->locationFull().raw());
1976	}
1977
1978	bool indirect = hd->isReadOnly();
1979	bool associate = true;
1980
1981	do
1982	{
1983	if (mHDData.isBackedUp())
1984	{
1985	const HDData::AttachmentList &oldAtts =
1986	mHDData.backedUpData()->mAttachments;
1987
1988	/* check if the hard disk was attached to the VM before we started
1989	* changing attachemnts in which case the attachment just needs to
1990	* be restored */
1991	HDData::AttachmentList::const_iterator it =
1992	std::find_if (oldAtts.begin(), oldAtts.end(),
1993	HardDiskAttachment::RefersTo (hd));
1994	if (it != oldAtts.end())
1995	{
1996	AssertReturn (!indirect, E_FAIL);
1997
1998	/* see if it's the same bus/channel/device */
1999	if ((*it)->device() == aDevice &&
2000	(*it)->port() == aControllerPort &&
2001	(*it)->controller() == aControllerName)
2002	{
2003	/* the simplest case: restore the whole attachment
2004	* and return, nothing else to do */
2005	mHDData->mAttachments.push_back (*it);
2006	return S_OK;
2007	}
2008
2009	/* bus/channel/device differ; we need a new attachment object,
2010	* but don't try to associate it again */
2011	associate = false;
2012	break;
2013	}
2014	}
2015
2016	/* go further only if the attachment is to be indirect */
2017	if (!indirect)
2018	break;
2019
2020	/* perform the so called smart attachment logic for indirect
2021	* attachments. Note that smart attachment is only applicable to base
2022	* hard disks. */
2023
2024	if (hd->parent().isNull())
2025	{
2026	/* first, investigate the backup copy of the current hard disk
2027	* attachments to make it possible to re-attach existing diffs to
2028	* another device slot w/o losing their contents */
2029	if (mHDData.isBackedUp())
2030	{
2031	const HDData::AttachmentList &oldAtts =
2032	mHDData.backedUpData()->mAttachments;
2033
2034	HDData::AttachmentList::const_iterator foundIt = oldAtts.end();
2035	uint32_t foundLevel = 0;
2036
2037	for (HDData::AttachmentList::const_iterator
2038	it = oldAtts.begin(); it != oldAtts.end(); ++ it)
2039	{
2040	uint32_t level = 0;
2041	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2042	{
2043	/* skip the hard disk if its currently attached (we
2044	* cannot attach the same hard disk twice) */
2045	if (std::find_if (mHDData->mAttachments.begin(),
2046	mHDData->mAttachments.end(),
2047	HardDiskAttachment::RefersTo (
2048	(*it)->hardDisk())) !=
2049	mHDData->mAttachments.end())
2050	continue;
2051
2052	/* matched device, channel and bus (i.e. attached to the
2053	* same place) will win and immediately stop the search;
2054	* otherwise the attachment that has the youngest
2055	* descendant of hd will be used
2056	*/
2057	if ((*it)->device() == aDevice &&
2058	(*it)->port() == aControllerPort &&
2059	(*it)->controller() == aControllerName)
2060	{
2061	/* the simplest case: restore the whole attachment
2062	* and return, nothing else to do */
2063	mHDData->mAttachments.push_back (*it);
2064	return S_OK;
2065	}
2066	else
2067	if (foundIt == oldAtts.end() \|\|
2068	level > foundLevel /* prefer younger */)
2069	{
2070	foundIt = it;
2071	foundLevel = level;
2072	}
2073	}
2074	}
2075
2076	if (foundIt != oldAtts.end())
2077	{
2078	/* use the previously attached hard disk */
2079	hd = (*foundIt)->hardDisk();
2080	hdCaller.attach (hd);
2081	CheckComRCReturnRC (hdCaller.rc());
2082	hdLock.attach (hd);
2083	/* not implicit, doesn't require association with this VM */
2084	indirect = false;
2085	associate = false;
2086	/* go right to the HardDiskAttachment creation */
2087	break;
2088	}
2089	}
2090
2091	/* then, search through snapshots for the best diff in the given
2092	* hard disk's chain to base the new diff on */
2093
2094	ComObjPtr<HardDisk> base;
2095	ComObjPtr<Snapshot> snap = mData->mCurrentSnapshot;
2096	while (snap)
2097	{
2098	AutoReadLock snapLock (snap);
2099
2100	const HDData::AttachmentList &snapAtts =
2101	snap->data().mMachine->mHDData->mAttachments;
2102
2103	HDData::AttachmentList::const_iterator foundIt = snapAtts.end();
2104	uint32_t foundLevel = 0;
2105
2106	for (HDData::AttachmentList::const_iterator
2107	it = snapAtts.begin(); it != snapAtts.end(); ++ it)
2108	{
2109	uint32_t level = 0;
2110	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2111	{
2112	/* matched device, channel and bus (i.e. attached to the
2113	* same place) will win and immediately stop the search;
2114	* otherwise the attachment that has the youngest
2115	* descendant of hd will be used
2116	*/
2117	if ((*it)->device() == aDevice &&
2118	(*it)->port() == aControllerPort &&
2119	(*it)->controller() == aControllerName)
2120	{
2121	foundIt = it;
2122	break;
2123	}
2124	else
2125	if (foundIt == snapAtts.end() \|\|
2126	level > foundLevel /* prefer younger */)
2127	{
2128	foundIt = it;
2129	foundLevel = level;
2130	}
2131	}
2132	}
2133
2134	if (foundIt != snapAtts.end())
2135	{
2136	base = (*foundIt)->hardDisk();
2137	break;
2138	}
2139
2140	snap = snap->parent();
2141	}
2142
2143	/* found a suitable diff, use it as a base */
2144	if (!base.isNull())
2145	{
2146	hd = base;
2147	hdCaller.attach (hd);
2148	CheckComRCReturnRC (hdCaller.rc());
2149	hdLock.attach (hd);
2150	}
2151	}
2152
2153	ComObjPtr<HardDisk> diff;
2154	diff.createObject();
2155	rc = diff->init(mParent,
2156	hd->preferredDiffFormat(),
2157	BstrFmt ("%ls"RTPATH_SLASH_STR,
2158	mUserData->mSnapshotFolderFull.raw()));
2159	CheckComRCReturnRC (rc);
2160
2161	/* make sure the hard disk is not modified before createDiffStorage() */
2162	rc = hd->LockRead (NULL);
2163	CheckComRCReturnRC (rc);
2164
2165	/* will leave the lock before the potentially lengthy operation, so
2166	* protect with the special state */
2167	MachineState_T oldState = mData->mMachineState;
2168	setMachineState (MachineState_SettingUp);
2169
2170	hdLock.leave();
2171	alock.leave();
2172	vboxLock.unlock();
2173
2174	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard);
2175
2176	alock.enter();
2177	hdLock.enter();
2178
2179	setMachineState (oldState);
2180
2181	hd->UnlockRead (NULL);
2182
2183	CheckComRCReturnRC (rc);
2184
2185	/* use the created diff for the actual attachment */
2186	hd = diff;
2187	hdCaller.attach (hd);
2188	CheckComRCReturnRC (hdCaller.rc());
2189	hdLock.attach (hd);
2190	}
2191	while (0);
2192
2193	ComObjPtr<HardDiskAttachment> attachment;
2194	attachment.createObject();
2195	rc = attachment->init (hd, aControllerName, aControllerPort, aDevice, indirect);
2196	CheckComRCReturnRC (rc);
2197
2198	if (associate)
2199	{
2200	/* as the last step, associate the hard disk to the VM */
2201	rc = hd->attachTo (mData->mUuid);
2202	/* here we can fail because of Deleting, or being in process of
2203	* creating a Diff */
2204	CheckComRCReturnRC (rc);
2205	}
2206
2207	/* sucsess: finally remember the attachment */
2208	mHDData.backup();
2209	mHDData->mAttachments.push_back (attachment);
2210
2211	return rc;
2212	}
2213
2214	STDMETHODIMP Machine::GetHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2215	LONG aDevice, IHardDisk **aHardDisk)
2216	{
2217	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2218	aControllerName, aControllerPort, aDevice));
2219
2220	CheckComArgNotNull (aControllerName);
2221	CheckComArgOutPointerValid (aHardDisk);
2222
2223	AutoCaller autoCaller (this);
2224	CheckComRCReturnRC (autoCaller.rc());
2225
2226	AutoReadLock alock (this);
2227
2228	*aHardDisk = NULL;
2229
2230	HDData::AttachmentList::const_iterator it =
2231	std::find_if (mHDData->mAttachments.begin(),
2232	mHDData->mAttachments.end(),
2233	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2234
2235	if (it == mHDData->mAttachments.end())
2236	return setError (VBOX_E_OBJECT_NOT_FOUND,
2237	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2238	aDevice, aControllerPort, aControllerName);
2239
2240	(*it)->hardDisk().queryInterfaceTo (aHardDisk);
2241
2242	return S_OK;
2243	}
2244
2245	STDMETHODIMP Machine::DetachHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2246	LONG aDevice)
2247	{
2248	CheckComArgNotNull (aControllerName);
2249
2250	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2251	aControllerName, aControllerPort, aDevice));
2252
2253	AutoCaller autoCaller (this);
2254	CheckComRCReturnRC (autoCaller.rc());
2255
2256	AutoWriteLock alock (this);
2257
2258	HRESULT rc = checkStateDependency (MutableStateDep);
2259	CheckComRCReturnRC (rc);
2260
2261	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
2262
2263	if (Global::IsOnlineOrTransient (mData->mMachineState))
2264	return setError (VBOX_E_INVALID_VM_STATE,
2265	tr ("Invalid machine state: %d"), mData->mMachineState);
2266
2267	HDData::AttachmentList::const_iterator it =
2268	std::find_if (mHDData->mAttachments.begin(),
2269	mHDData->mAttachments.end(),
2270	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2271
2272	if (it == mHDData->mAttachments.end())
2273	return setError (VBOX_E_OBJECT_NOT_FOUND,
2274	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2275	aDevice, aControllerPort, aControllerName);
2276
2277	ComObjPtr<HardDiskAttachment> hda = *it;
2278	ComObjPtr<HardDisk> hd = hda->hardDisk();
2279
2280	if (hda->isImplicit())
2281	{
2282	/* attempt to implicitly delete the implicitly created diff */
2283
2284	/// @todo move the implicit flag from HardDiskAttachment to HardDisk
2285	/// and forbid any hard disk operation when it is implicit. Or maybe
2286	/// a special media state for it to make it even more simple.
2287
2288	Assert (mHDData.isBackedUp());
2289
2290	/* will leave the lock before the potentially lengthy operation, so
2291	* protect with the special state */
2292	MachineState_T oldState = mData->mMachineState;
2293	setMachineState (MachineState_SettingUp);
2294
2295	alock.leave();
2296
2297	rc = hd->deleteStorageAndWait();
2298
2299	alock.enter();
2300
2301	setMachineState (oldState);
2302
2303	CheckComRCReturnRC (rc);
2304	}
2305
2306	mHDData.backup();
2307
2308	/* we cannot use erase (it) below because backup() above will create
2309	* a copy of the list and make this copy active, but the iterator
2310	* still refers to the original and is not valid for the copy */
2311	mHDData->mAttachments.remove (hda);
2312
2313	return S_OK;
2314	}
2315
2316	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
2317	{
2318	CheckComArgOutPointerValid (port);
2319	CheckComArgExpr (slot, slot < RT_ELEMENTS (mSerialPorts));
2320
2321	AutoCaller autoCaller (this);
2322	CheckComRCReturnRC (autoCaller.rc());
2323
2324	AutoReadLock alock (this);
2325
2326	mSerialPorts [slot].queryInterfaceTo (port);
2327
2328	return S_OK;
2329	}
2330
2331	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
2332	{
2333	CheckComArgOutPointerValid (port);
2334	CheckComArgExpr (slot, slot < RT_ELEMENTS (mParallelPorts));
2335
2336	AutoCaller autoCaller (this);
2337	CheckComRCReturnRC (autoCaller.rc());
2338
2339	AutoReadLock alock (this);
2340
2341	mParallelPorts [slot].queryInterfaceTo (port);
2342
2343	return S_OK;
2344	}
2345
2346	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
2347	{
2348	CheckComArgOutPointerValid (adapter);
2349	CheckComArgExpr (slot, slot < RT_ELEMENTS (mNetworkAdapters));
2350
2351	AutoCaller autoCaller (this);
2352	CheckComRCReturnRC (autoCaller.rc());
2353
2354	AutoReadLock alock (this);
2355
2356	mNetworkAdapters [slot].queryInterfaceTo (adapter);
2357
2358	return S_OK;
2359	}
2360
2361	/**
2362	* @note Locks this object for reading.
2363	*/
2364	STDMETHODIMP Machine::GetNextExtraDataKey (IN_BSTR aKey, BSTR aNextKey, BSTR aNextValue)
2365	{
2366	CheckComArgOutPointerValid (aNextKey);
2367
2368	AutoCaller autoCaller (this);
2369	CheckComRCReturnRC (autoCaller.rc());
2370
2371	/* serialize file access (prevent writes) */
2372	AutoReadLock alock (this);
2373
2374	/* start with nothing found */
2375	*aNextKey = NULL;
2376	if (aNextValue)
2377	*aNextValue = NULL;
2378
2379	/* if we're ready and isConfigLocked() is FALSE then it means
2380	* that no config file exists yet, so return shortly */
2381	if (!isConfigLocked())
2382	return S_OK;
2383
2384	HRESULT rc = S_OK;
2385
2386	try
2387	{
2388	using namespace settings;
2389	using namespace xml;
2390
2391	/* load the settings file (we don't reuse the existing handle but
2392	* request a new one to allow for concurrent multithreaded reads) */
2393	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2394	XmlTreeBackend tree;
2395
2396	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2397	CheckComRCReturnRC (rc);
2398
2399	Key machineNode = tree.rootKey().key ("Machine");
2400	Key extraDataNode = machineNode.findKey ("ExtraData");
2401
2402	if (!extraDataNode.isNull())
2403	{
2404	Key::List items = extraDataNode.keys ("ExtraDataItem");
2405	if (items.size())
2406	{
2407	for (Key::List::const_iterator it = items.begin();
2408	it != items.end(); ++ it)
2409	{
2410	Bstr key = (*it).stringValue ("name");
2411
2412	/* if we're supposed to return the first one */
2413	if (aKey == NULL)
2414	{
2415	key.cloneTo (aNextKey);
2416	if (aNextValue)
2417	{
2418	Bstr val = (*it).stringValue ("value");
2419	val.cloneTo (aNextValue);
2420	}
2421	return S_OK;
2422	}
2423
2424	/* did we find the key we're looking for? */
2425	if (key == aKey)
2426	{
2427	++ it;
2428	/* is there another item? */
2429	if (it != items.end())
2430	{
2431	Bstr key = (*it).stringValue ("name");
2432	key.cloneTo (aNextKey);
2433	if (aNextValue)
2434	{
2435	Bstr val = (*it).stringValue ("value");
2436	val.cloneTo (aNextValue);
2437	}
2438	}
2439	/* else it's the last one, arguments are already NULL */
2440	return S_OK;
2441	}
2442	}
2443	}
2444	}
2445
2446	/* Here we are when a) there are no items at all or b) there are items
2447	* but none of them equals the requested non-NULL key. b) is an
2448	* error as well as a) if the key is non-NULL. When the key is NULL
2449	* (which is the case only when there are no items), we just fall
2450	* through to return NULLs and S_OK. */
2451
2452	if (aKey != NULL)
2453	return setError (VBOX_E_OBJECT_NOT_FOUND,
2454	tr ("Could not find the extra data key '%ls'"), aKey);
2455	}
2456	catch (...)
2457	{
2458	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2459	}
2460
2461	return rc;
2462	}
2463
2464	/**
2465	* @note Locks this object for reading.
2466	*/
2467	STDMETHODIMP Machine::GetExtraData (IN_BSTR aKey, BSTR *aValue)
2468	{
2469	CheckComArgNotNull (aKey);
2470	CheckComArgOutPointerValid (aValue);
2471
2472	AutoCaller autoCaller (this);
2473	CheckComRCReturnRC (autoCaller.rc());
2474
2475	/* serialize file access (prevent writes) */
2476	AutoReadLock alock (this);
2477
2478	/* start with nothing found */
2479	*aValue = NULL;
2480
2481	/* if we're ready and isConfigLocked() is FALSE then it means
2482	* that no config file exists yet, so return shortly */
2483	if (!isConfigLocked())
2484	return S_OK;
2485
2486	HRESULT rc = S_OK;
2487
2488	try
2489	{
2490	using namespace settings;
2491	using namespace xml;
2492
2493	/* load the settings file (we don't reuse the existing handle but
2494	* request a new one to allow for concurrent multithreaded reads) */
2495	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2496	XmlTreeBackend tree;
2497
2498	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2499	CheckComRCReturnRC (rc);
2500
2501	const Utf8Str key = aKey;
2502
2503	Key machineNode = tree.rootKey().key ("Machine");
2504	Key extraDataNode = machineNode.findKey ("ExtraData");
2505
2506	if (!extraDataNode.isNull())
2507	{
2508	/* check if the key exists */
2509	Key::List items = extraDataNode.keys ("ExtraDataItem");
2510	for (Key::List::const_iterator it = items.begin();
2511	it != items.end(); ++ it)
2512	{
2513	if (key == (*it).stringValue ("name"))
2514	{
2515	Bstr val = (*it).stringValue ("value");
2516	val.cloneTo (aValue);
2517	break;
2518	}
2519	}
2520	}
2521	}
2522	catch (...)
2523	{
2524	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2525	}
2526
2527	return rc;
2528	}
2529
2530	/**
2531	* @note Locks mParent for writing + this object for writing.
2532	*/
2533	STDMETHODIMP Machine::SetExtraData (IN_BSTR aKey, IN_BSTR aValue)
2534	{
2535	CheckComArgNotNull (aKey);
2536
2537	AutoCaller autoCaller (this);
2538	CheckComRCReturnRC (autoCaller.rc());
2539
2540	/* VirtualBox::onExtraDataCanChange() and saveSettings() need mParent
2541	* lock (saveSettings() needs a write one). This object's write lock is
2542	* also necessary to serialize file access (prevent concurrent reads and
2543	* writes). */
2544	AutoMultiWriteLock2 alock (mParent, this);
2545
2546	if (mType == IsSnapshotMachine)
2547	{
2548	HRESULT rc = checkStateDependency (MutableStateDep);
2549	CheckComRCReturnRC (rc);
2550	}
2551
2552	bool changed = false;
2553	HRESULT rc = S_OK;
2554
2555	/* If we're ready and isConfigLocked() is FALSE then it means that no
2556	* config file exists yet, so call saveSettings() to create one. */
2557	if (!isConfigLocked())
2558	{
2559	rc = saveSettings();
2560	CheckComRCReturnRC (rc);
2561	}
2562
2563	try
2564	{
2565	using namespace settings;
2566	using namespace xml;
2567
2568	/* load the settings file */
2569	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
2570	XmlTreeBackend tree;
2571
2572	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
2573	CheckComRCReturnRC (rc);
2574
2575	const Utf8Str key = aKey;
2576	Bstr oldVal;
2577
2578	Key machineNode = tree.rootKey().key ("Machine");
2579	Key extraDataNode = machineNode.createKey ("ExtraData");
2580	Key extraDataItemNode;
2581
2582	Key::List items = extraDataNode.keys ("ExtraDataItem");
2583	for (Key::List::const_iterator it = items.begin();
2584	it != items.end(); ++ it)
2585	{
2586	if (key == (*it).stringValue ("name"))
2587	{
2588	extraDataItemNode = *it;
2589	oldVal = (*it).stringValue ("value");
2590	break;
2591	}
2592	}
2593
2594	/* When no key is found, oldVal is null */
2595	changed = oldVal != aValue;
2596
2597	if (changed)
2598	{
2599	/* ask for permission from all listeners */
2600	Bstr error;
2601	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, aValue, error))
2602	{
2603	const char *sep = error.isEmpty() ? "" : ": ";
2604	CBSTR err = error.isNull() ? (CBSTR) L"" : error.raw();
2605	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2606	sep, err));
2607	return setError (E_ACCESSDENIED,
2608	tr ("Could not set extra data because someone refused "
2609	"the requested change of '%ls' to '%ls'%s%ls"),
2610	aKey, aValue, sep, err);
2611	}
2612
2613	if (aValue != NULL)
2614	{
2615	if (extraDataItemNode.isNull())
2616	{
2617	extraDataItemNode = extraDataNode.appendKey ("ExtraDataItem");
2618	extraDataItemNode.setStringValue ("name", key);
2619	}
2620	extraDataItemNode.setStringValue ("value", Utf8Str (aValue));
2621	}
2622	else
2623	{
2624	/* an old value does for sure exist here (XML schema
2625	* guarantees that "value" may not absent in the
2626	* <ExtraDataItem> element) */
2627	Assert (!extraDataItemNode.isNull());
2628	extraDataItemNode.zap();
2629	}
2630
2631	/* save settings on success */
2632	rc = VirtualBox::saveSettingsTree (tree, file,
2633	mData->mSettingsFileVersion);
2634	CheckComRCReturnRC (rc);
2635	}
2636	}
2637	catch (...)
2638	{
2639	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2640	}
2641
2642	/* fire a notification */
2643	if (SUCCEEDED (rc) && changed)
2644	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2645
2646	return rc;
2647	}
2648
2649	STDMETHODIMP Machine::SaveSettings()
2650	{
2651	AutoCaller autoCaller (this);
2652	CheckComRCReturnRC (autoCaller.rc());
2653
2654	/* saveSettings() needs mParent lock */
2655	AutoMultiWriteLock2 alock (mParent, this);
2656
2657	/* when there was auto-conversion, we want to save the file even if
2658	* the VM is saved */
2659	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2660	MutableOrSavedStateDep : MutableStateDep;
2661
2662	HRESULT rc = checkStateDependency (dep);
2663	CheckComRCReturnRC (rc);
2664
2665	/* the settings file path may never be null */
2666	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2667
2668	/* save all VM data excluding snapshots */
2669	return saveSettings();
2670	}
2671
2672	STDMETHODIMP Machine::SaveSettingsWithBackup (BSTR *aBakFileName)
2673	{
2674	CheckComArgOutPointerValid (aBakFileName);
2675
2676	AutoCaller autoCaller (this);
2677	CheckComRCReturnRC (autoCaller.rc());
2678
2679	/* saveSettings() needs mParent lock */
2680	AutoMultiWriteLock2 alock (mParent, this);
2681
2682	/* when there was auto-conversion, we want to save the file even if
2683	* the VM is saved */
2684	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2685	MutableOrSavedStateDep : MutableStateDep;
2686
2687	HRESULT rc = checkStateDependency (dep);
2688	CheckComRCReturnRC (rc);
2689
2690	/* the settings file path may never be null */
2691	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2692
2693	/* perform backup only when there was auto-conversion */
2694	if (mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL)
2695	{
2696	Bstr bakFileName;
2697
2698	HRESULT rc = VirtualBox::backupSettingsFile (mData->mConfigFileFull,
2699	mData->mSettingsFileVersion,
2700	bakFileName);
2701	CheckComRCReturnRC (rc);
2702
2703	bakFileName.cloneTo (aBakFileName);
2704	}
2705
2706	/* save all VM data excluding snapshots */
2707	return saveSettings();
2708	}
2709
2710	STDMETHODIMP Machine::DiscardSettings()
2711	{
2712	AutoCaller autoCaller (this);
2713	CheckComRCReturnRC (autoCaller.rc());
2714
2715	AutoWriteLock alock (this);
2716
2717	HRESULT rc = checkStateDependency (MutableStateDep);
2718	CheckComRCReturnRC (rc);
2719
2720	/*
2721	* during this rollback, the session will be notified if data has
2722	* been actually changed
2723	*/
2724	rollback (true /* aNotify */);
2725
2726	return S_OK;
2727	}
2728
2729	STDMETHODIMP Machine::DeleteSettings()
2730	{
2731	AutoCaller autoCaller (this);
2732	CheckComRCReturnRC (autoCaller.rc());
2733
2734	AutoWriteLock alock (this);
2735
2736	HRESULT rc = checkStateDependency (MutableStateDep);
2737	CheckComRCReturnRC (rc);
2738
2739	if (mData->mRegistered)
2740	return setError (VBOX_E_INVALID_VM_STATE,
2741	tr ("Cannot delete settings of a registered machine"));
2742
2743	/* delete the settings only when the file actually exists */
2744	lockConfig();
2745	if (isConfigLocked())
2746	{
2747	unlockConfig();
2748	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2749	if (RT_FAILURE (vrc))
2750	return setError (VBOX_E_IPRT_ERROR,
2751	tr ("Could not delete the settings file '%ls' (%Rrc)"),
2752	mData->mConfigFileFull.raw(), vrc);
2753
2754	/* delete the Logs folder, nothing important should be left
2755	* there (we don't check for errors because the user might have
2756	* some private files there that we don't want to delete) */
2757	Utf8Str logFolder;
2758	getLogFolder (logFolder);
2759	Assert (!logFolder.isEmpty());
2760	if (RTDirExists (logFolder))
2761	{
2762	/* Delete all VBox.log[.N] files from the Logs folder
2763	* (this must be in sync with the rotation logic in
2764	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2765	* files that may have been created by the GUI. */
2766	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2767	RTFileDelete (log);
2768	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2769	RTFileDelete (log);
2770	for (int i = 3; i >= 0; i--)
2771	{
2772	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2773	RTFileDelete (log);
2774	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2775	RTFileDelete (log);
2776	}
2777
2778	RTDirRemove (logFolder);
2779	}
2780
2781	/* delete the Snapshots folder, nothing important should be left
2782	* there (we don't check for errors because the user might have
2783	* some private files there that we don't want to delete) */
2784	Utf8Str snapshotFolder = mUserData->mSnapshotFolderFull;
2785	Assert (!snapshotFolder.isEmpty());
2786	if (RTDirExists (snapshotFolder))
2787	RTDirRemove (snapshotFolder);
2788
2789	/* delete the directory that contains the settings file, but only
2790	* if it matches the VM name (i.e. a structure created by default in
2791	* prepareSaveSettings()) */
2792	{
2793	Utf8Str settingsDir;
2794	if (isInOwnDir (&settingsDir))
2795	RTDirRemove (settingsDir);
2796	}
2797	}
2798
2799	return S_OK;
2800	}
2801
2802	STDMETHODIMP Machine::GetSnapshot (IN_GUID aId, ISnapshot **aSnapshot)
2803	{
2804	CheckComArgOutPointerValid (aSnapshot);
2805
2806	AutoCaller autoCaller (this);
2807	CheckComRCReturnRC (autoCaller.rc());
2808
2809	AutoReadLock alock (this);
2810
2811	Guid id = aId;
2812	ComObjPtr <Snapshot> snapshot;
2813
2814	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2815	snapshot.queryInterfaceTo (aSnapshot);
2816
2817	return rc;
2818	}
2819
2820	STDMETHODIMP Machine::FindSnapshot (IN_BSTR aName, ISnapshot **aSnapshot)
2821	{
2822	CheckComArgNotNull (aName);
2823	CheckComArgOutPointerValid (aSnapshot);
2824
2825	AutoCaller autoCaller (this);
2826	CheckComRCReturnRC (autoCaller.rc());
2827
2828	AutoReadLock alock (this);
2829
2830	ComObjPtr <Snapshot> snapshot;
2831
2832	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2833	snapshot.queryInterfaceTo (aSnapshot);
2834
2835	return rc;
2836	}
2837
2838	STDMETHODIMP Machine::SetCurrentSnapshot (IN_GUID /* aId */)
2839	{
2840	/// @todo (dmik) don't forget to set
2841	// mData->mCurrentStateModified to FALSE
2842
2843	return setError (E_NOTIMPL, "Not implemented");
2844	}
2845
2846	STDMETHODIMP
2847	Machine::CreateSharedFolder (IN_BSTR aName, IN_BSTR aHostPath, BOOL aWritable)
2848	{
2849	CheckComArgNotNull (aName);
2850	CheckComArgNotNull (aHostPath);
2851
2852	AutoCaller autoCaller (this);
2853	CheckComRCReturnRC (autoCaller.rc());
2854
2855	AutoWriteLock alock (this);
2856
2857	HRESULT rc = checkStateDependency (MutableStateDep);
2858	CheckComRCReturnRC (rc);
2859
2860	ComObjPtr <SharedFolder> sharedFolder;
2861	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2862	if (SUCCEEDED (rc))
2863	return setError (VBOX_E_OBJECT_IN_USE,
2864	tr ("Shared folder named '%ls' already exists"), aName);
2865
2866	sharedFolder.createObject();
2867	rc = sharedFolder->init (machine(), aName, aHostPath, aWritable);
2868	CheckComRCReturnRC (rc);
2869
2870	mHWData.backup();
2871	mHWData->mSharedFolders.push_back (sharedFolder);
2872
2873	/* inform the direct session if any */
2874	alock.leave();
2875	onSharedFolderChange();
2876
2877	return S_OK;
2878	}
2879
2880	STDMETHODIMP Machine::RemoveSharedFolder (IN_BSTR aName)
2881	{
2882	CheckComArgNotNull (aName);
2883
2884	AutoCaller autoCaller (this);
2885	CheckComRCReturnRC (autoCaller.rc());
2886
2887	AutoWriteLock alock (this);
2888
2889	HRESULT rc = checkStateDependency (MutableStateDep);
2890	CheckComRCReturnRC (rc);
2891
2892	ComObjPtr <SharedFolder> sharedFolder;
2893	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2894	CheckComRCReturnRC (rc);
2895
2896	mHWData.backup();
2897	mHWData->mSharedFolders.remove (sharedFolder);
2898
2899	/* inform the direct session if any */
2900	alock.leave();
2901	onSharedFolderChange();
2902
2903	return S_OK;
2904	}
2905
2906	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2907	{
2908	CheckComArgOutPointerValid (aCanShow);
2909
2910	/* start with No */
2911	*aCanShow = FALSE;
2912
2913	AutoCaller autoCaller (this);
2914	AssertComRCReturnRC (autoCaller.rc());
2915
2916	ComPtr <IInternalSessionControl> directControl;
2917	{
2918	AutoReadLock alock (this);
2919
2920	if (mData->mSession.mState != SessionState_Open)
2921	return setError (VBOX_E_INVALID_VM_STATE,
2922	tr ("Machine session is not open (session state: %d)"),
2923	mData->mSession.mState);
2924
2925	directControl = mData->mSession.mDirectControl;
2926	}
2927
2928	/* ignore calls made after #OnSessionEnd() is called */
2929	if (!directControl)
2930	return S_OK;
2931
2932	ULONG64 dummy;
2933	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2934	}
2935
2936	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2937	{
2938	CheckComArgOutPointerValid (aWinId);
2939
2940	AutoCaller autoCaller (this);
2941	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2942
2943	ComPtr <IInternalSessionControl> directControl;
2944	{
2945	AutoReadLock alock (this);
2946
2947	if (mData->mSession.mState != SessionState_Open)
2948	return setError (E_FAIL,
2949	tr ("Machine session is not open (session state: %d)"),
2950	mData->mSession.mState);
2951
2952	directControl = mData->mSession.mDirectControl;
2953	}
2954
2955	/* ignore calls made after #OnSessionEnd() is called */
2956	if (!directControl)
2957	return S_OK;
2958
2959	BOOL dummy;
2960	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2961	}
2962
2963	STDMETHODIMP Machine::GetGuestProperty (IN_BSTR aName, BSTR aValue, ULONG64 aTimestamp, BSTR *aFlags)
2964	{
2965	#if !defined (VBOX_WITH_GUEST_PROPS)
2966	ReturnComNotImplemented();
2967	#else
2968	CheckComArgNotNull (aName);
2969	CheckComArgOutPointerValid (aValue);
2970	CheckComArgOutPointerValid (aTimestamp);
2971	CheckComArgOutPointerValid (aFlags);
2972
2973	AutoCaller autoCaller (this);
2974	CheckComRCReturnRC (autoCaller.rc());
2975
2976	AutoReadLock alock (this);
2977
2978	using namespace guestProp;
2979	HRESULT rc = E_FAIL;
2980
2981	if (!mHWData->mPropertyServiceActive)
2982	{
2983	bool found = false;
2984	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
2985	(it != mHWData->mGuestProperties.end()) && !found; ++it)
2986	{
2987	if (it->mName == aName)
2988	{
2989	char szFlags[MAX_FLAGS_LEN + 1];
2990	it->mValue.cloneTo (aValue);
2991	*aTimestamp = it->mTimestamp;
2992	writeFlags (it->mFlags, szFlags);
2993	Bstr (szFlags).cloneTo (aFlags);
2994	found = true;
2995	}
2996	}
2997	rc = S_OK;
2998	}
2999	else
3000	{
3001	ComPtr <IInternalSessionControl> directControl =
3002	mData->mSession.mDirectControl;
3003
3004	/* just be on the safe side when calling another process */
3005	alock.unlock();
3006
3007	/* fail if we were called after #OnSessionEnd() is called. This is a
3008	* silly race condition. */
3009
3010	if (!directControl)
3011	rc = E_FAIL;
3012	else
3013	rc = directControl->AccessGuestProperty (aName, NULL, NULL,
3014	false /* isSetter */,
3015	aValue, aTimestamp, aFlags);
3016	}
3017	return rc;
3018	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3019	}
3020
3021	STDMETHODIMP Machine::GetGuestPropertyValue (IN_BSTR aName, BSTR *aValue)
3022	{
3023	ULONG64 dummyTimestamp;
3024	BSTR dummyFlags;
3025	return GetGuestProperty (aName, aValue, &dummyTimestamp, &dummyFlags);
3026	}
3027
3028	STDMETHODIMP Machine::GetGuestPropertyTimestamp (IN_BSTR aName, ULONG64 *aTimestamp)
3029	{
3030	BSTR dummyValue;
3031	BSTR dummyFlags;
3032	return GetGuestProperty (aName, &dummyValue, aTimestamp, &dummyFlags);
3033	}
3034
3035	STDMETHODIMP Machine::SetGuestProperty (IN_BSTR aName, IN_BSTR aValue, IN_BSTR aFlags)
3036	{
3037	#if !defined (VBOX_WITH_GUEST_PROPS)
3038	ReturnComNotImplemented();
3039	#else
3040	using namespace guestProp;
3041
3042	CheckComArgNotNull (aName);
3043	if ((aValue != NULL) && !VALID_PTR (aValue))
3044	return E_INVALIDARG;
3045	if ((aFlags != NULL) && !VALID_PTR (aFlags))
3046	return E_INVALIDARG;
3047
3048	Utf8Str utf8Name (aName);
3049	Utf8Str utf8Flags (aFlags);
3050	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
3051	if ( utf8Name.isNull()
3052	\|\| ((aFlags != NULL) && utf8Flags.isNull())
3053	\|\| utf8Patterns.isNull()
3054	)
3055	return E_OUTOFMEMORY;
3056	bool matchAll = false;
3057	if (0 == utf8Patterns.length())
3058	matchAll = true;
3059
3060	uint32_t fFlags = NILFLAG;
3061	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags))
3062	)
3063	return setError (E_INVALIDARG, tr ("Invalid flag values: '%ls'"),
3064	aFlags);
3065
3066	AutoCaller autoCaller (this);
3067	CheckComRCReturnRC (autoCaller.rc());
3068
3069	AutoWriteLock alock (this);
3070
3071	HRESULT rc = checkStateDependency (MutableStateDep);
3072	CheckComRCReturnRC (rc);
3073
3074	rc = S_OK;
3075
3076	if (!mHWData->mPropertyServiceActive)
3077	{
3078	bool found = false;
3079	HWData::GuestProperty property;
3080	property.mFlags = NILFLAG;
3081	if (fFlags & TRANSIENT)
3082	rc = setError (VBOX_E_INVALID_OBJECT_STATE,
3083	tr ("Cannot set a transient property when the "
3084	"machine is not running"));
3085	if (SUCCEEDED (rc))
3086	{
3087	for (HWData::GuestPropertyList::iterator it =
3088	mHWData->mGuestProperties.begin();
3089	it != mHWData->mGuestProperties.end(); ++ it)
3090	if (it->mName == aName)
3091	{
3092	property = *it;
3093	if (it->mFlags & (RDONLYHOST))
3094	rc = setError (E_ACCESSDENIED,
3095	tr ("The property '%ls' cannot be changed by the host"),
3096	aName);
3097	else
3098	{
3099	mHWData.backup();
3100	/* The backup() operation invalidates our iterator, so
3101	* get a new one. */
3102	for (it = mHWData->mGuestProperties.begin();
3103	it->mName != aName; ++ it)
3104	;
3105	mHWData->mGuestProperties.erase (it);
3106	}
3107	found = true;
3108	break;
3109	}
3110	}
3111	if (found && SUCCEEDED (rc))
3112	{
3113	if (aValue != NULL)
3114	{
3115	RTTIMESPEC time;
3116	property.mValue = aValue;
3117	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3118	if (aFlags != NULL)
3119	property.mFlags = fFlags;
3120	mHWData->mGuestProperties.push_back (property);
3121	}
3122	}
3123	else if (SUCCEEDED (rc) && (aValue != NULL))
3124	{
3125	RTTIMESPEC time;
3126	mHWData.backup();
3127	property.mName = aName;
3128	property.mValue = aValue;
3129	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3130	property.mFlags = fFlags;
3131	mHWData->mGuestProperties.push_back (property);
3132	}
3133	if ( SUCCEEDED (rc)
3134	&& ( matchAll
3135	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
3136	utf8Name.raw(), RTSTR_MAX, NULL)
3137	)
3138	)
3139	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
3140	}
3141	else
3142	{
3143	ComPtr <IInternalSessionControl> directControl =
3144	mData->mSession.mDirectControl;
3145
3146	/* just be on the safe side when calling another process */
3147	alock.leave();
3148
3149	BSTR dummy = NULL;
3150	ULONG64 dummy64;
3151	if (!directControl)
3152	rc = E_FAIL;
3153	else
3154	rc = directControl->AccessGuestProperty (aName, aValue, aFlags,
3155	true /* isSetter */,
3156	&dummy, &dummy64, &dummy);
3157	}
3158	return rc;
3159	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3160	}
3161
3162	STDMETHODIMP Machine::SetGuestPropertyValue (IN_BSTR aName, IN_BSTR aValue)
3163	{
3164	return SetGuestProperty (aName, aValue, NULL);
3165	}
3166
3167	STDMETHODIMP Machine::
3168	EnumerateGuestProperties (IN_BSTR aPatterns, ComSafeArrayOut (BSTR, aNames),
3169	ComSafeArrayOut (BSTR, aValues),
3170	ComSafeArrayOut (ULONG64, aTimestamps),
3171	ComSafeArrayOut (BSTR, aFlags))
3172	{
3173	#if !defined (VBOX_WITH_GUEST_PROPS)
3174	ReturnComNotImplemented();
3175	#else
3176	if (!VALID_PTR (aPatterns) && (aPatterns != NULL))
3177	return E_POINTER;
3178
3179	CheckComArgOutSafeArrayPointerValid (aNames);
3180	CheckComArgOutSafeArrayPointerValid (aValues);
3181	CheckComArgOutSafeArrayPointerValid (aTimestamps);
3182	CheckComArgOutSafeArrayPointerValid (aFlags);
3183
3184	AutoCaller autoCaller (this);
3185	CheckComRCReturnRC (autoCaller.rc());
3186
3187	AutoReadLock alock (this);
3188
3189	using namespace guestProp;
3190	HRESULT rc = E_FAIL;
3191
3192	bool matchAll = false;
3193	if ((NULL == aPatterns) \|\| (0 == aPatterns[0]))
3194	matchAll = true;
3195	if (!mHWData->mPropertyServiceActive)
3196	{
3197
3198	/*
3199	* Look for matching patterns and build up a list.
3200	*/
3201	HWData::GuestPropertyList propList;
3202	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3203	it != mHWData->mGuestProperties.end(); ++it)
3204	if ( matchAll
3205	\|\| RTStrSimplePatternMultiMatch (Utf8Str (aPatterns).raw(),
3206	RTSTR_MAX,
3207	Utf8Str (it->mName).raw(),
3208	RTSTR_MAX, NULL)
3209	)
3210	propList.push_back (*it);
3211
3212	/*
3213	* And build up the arrays for returning the property information.
3214	*/
3215	size_t cEntries = propList.size();
3216	SafeArray <BSTR> names (cEntries);
3217	SafeArray <BSTR> values (cEntries);
3218	SafeArray <ULONG64> timestamps (cEntries);
3219	SafeArray <BSTR> flags (cEntries);
3220	size_t iProp = 0;
3221	for (HWData::GuestPropertyList::iterator it = propList.begin();
3222	it != propList.end(); ++it)
3223	{
3224	char szFlags[MAX_FLAGS_LEN + 1];
3225	it->mName.cloneTo (&names[iProp]);
3226	it->mValue.cloneTo (&values[iProp]);
3227	timestamps[iProp] = it->mTimestamp;
3228	writeFlags (it->mFlags, szFlags);
3229	Bstr (szFlags).cloneTo (&flags[iProp]);
3230	++iProp;
3231	}
3232	names.detachTo (ComSafeArrayOutArg (aNames));
3233	values.detachTo (ComSafeArrayOutArg (aValues));
3234	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
3235	flags.detachTo (ComSafeArrayOutArg (aFlags));
3236	rc = S_OK;
3237	}
3238	else
3239	{
3240	ComPtr <IInternalSessionControl> directControl =
3241	mData->mSession.mDirectControl;
3242
3243	/* just be on the safe side when calling another process */
3244	alock.unlock();
3245
3246	if (!directControl)
3247	rc = E_FAIL;
3248	else
3249	rc = directControl->EnumerateGuestProperties (aPatterns,
3250	ComSafeArrayOutArg (aNames),
3251	ComSafeArrayOutArg (aValues),
3252	ComSafeArrayOutArg (aTimestamps),
3253	ComSafeArrayOutArg (aFlags));
3254	}
3255	return rc;
3256	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3257	}
3258
3259	STDMETHODIMP Machine::
3260	GetHardDiskAttachmentsOfController(IN_BSTR aName, ComSafeArrayOut (IHardDiskAttachment *, aAttachments))
3261	{
3262	HDData::AttachmentList atts;
3263
3264	HRESULT rc = getHardDiskAttachmentsOfController(aName, atts);
3265	CheckComRCReturnRC(rc);
3266
3267	SafeIfaceArray<IHardDiskAttachment> attachments (atts);
3268	attachments.detachTo (ComSafeArrayOutArg (aAttachments));
3269
3270	return S_OK;
3271	}
3272
3273	STDMETHODIMP Machine::
3274	AddStorageController(IN_BSTR aName,
3275	StorageBus_T aConnectionType,
3276	IStorageController **controller)
3277	{
3278	CheckComArgStrNotEmptyOrNull(aName);
3279
3280	if ( (aConnectionType <= StorageBus_Null)
3281	\|\| (aConnectionType > StorageBus_SCSI))
3282	return setError (E_INVALIDARG,
3283	tr ("Invalid connection type: %d"),
3284	aConnectionType);
3285
3286	AutoCaller autoCaller (this);
3287	CheckComRCReturnRC (autoCaller.rc());
3288
3289	AutoWriteLock alock (this);
3290
3291	HRESULT rc = checkStateDependency (MutableStateDep);
3292	CheckComRCReturnRC (rc);
3293
3294	/* try to find one with the name first. */
3295	ComObjPtr<StorageController> ctrl;
3296
3297	rc = getStorageControllerByName (aName, ctrl, false /* aSetError */);
3298	if (SUCCEEDED (rc))
3299	return setError (VBOX_E_OBJECT_IN_USE,
3300	tr ("Storage controller named '%ls' already exists"), aName);
3301
3302	ctrl.createObject();
3303	rc = ctrl->init (this, aName, aConnectionType);
3304	CheckComRCReturnRC (rc);
3305
3306	mStorageControllers.backup();
3307	mStorageControllers->push_back (ctrl);
3308
3309	ctrl.queryInterfaceTo(controller);
3310
3311	/* inform the direct session if any */
3312	alock.leave();
3313	onStorageControllerChange();
3314
3315	return S_OK;
3316	}
3317
3318	STDMETHODIMP Machine::
3319	GetStorageControllerByName(IN_BSTR aName, IStorageController **aStorageController)
3320	{
3321	CheckComArgStrNotEmptyOrNull(aName);
3322
3323	AutoCaller autoCaller (this);
3324	CheckComRCReturnRC (autoCaller.rc());
3325
3326	AutoReadLock alock (this);
3327
3328	ComObjPtr <StorageController> ctrl;
3329
3330	HRESULT rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3331	if (SUCCEEDED (rc))
3332	ctrl.queryInterfaceTo (aStorageController);
3333
3334	return rc;
3335	}
3336
3337	STDMETHODIMP Machine::
3338	RemoveStorageController(IN_BSTR aName)
3339	{
3340	CheckComArgStrNotEmptyOrNull(aName);
3341
3342	AutoCaller autoCaller (this);
3343	CheckComRCReturnRC (autoCaller.rc());
3344
3345	AutoWriteLock alock (this);
3346
3347	HRESULT rc = checkStateDependency (MutableStateDep);
3348	CheckComRCReturnRC (rc);
3349
3350	ComObjPtr <StorageController> ctrl;
3351	rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3352	CheckComRCReturnRC (rc);
3353
3354	/* We can remove the controller only if there is no device attached. */
3355	/* check if the device slot is already busy */
3356	for (HDData::AttachmentList::const_iterator
3357	it = mHDData->mAttachments.begin();
3358	it != mHDData->mAttachments.end();
3359	++ it)
3360	{
3361	if (it != mHDData->mAttachments.end())
3362	{
3363	if ((*it)->controller() == aName)
3364	return setError (VBOX_E_OBJECT_IN_USE,
3365	tr ("Storage controller named '%ls' has still devices attached"), aName);
3366	}
3367	}
3368
3369	/* We can remove it now. */
3370	mStorageControllers.backup();
3371
3372	ctrl->unshare();
3373
3374	mStorageControllers->remove (ctrl);
3375
3376	/* inform the direct session if any */
3377	alock.leave();
3378	onStorageControllerChange();
3379
3380	return S_OK;
3381	}
3382
3383	// public methods for internal purposes
3384	/////////////////////////////////////////////////////////////////////////////
3385
3386	/**
3387	* Saves the registry entry of this machine to the given configuration node.
3388	*
3389	* @param aEntryNode Node to save the registry entry to.
3390	*
3391	* @note locks this object for reading.
3392	*/
3393	HRESULT Machine::saveRegistryEntry (settings::Key &aEntryNode)
3394	{
3395	AssertReturn (!aEntryNode.isNull(), E_FAIL);
3396
3397	AutoLimitedCaller autoCaller (this);
3398	AssertComRCReturnRC (autoCaller.rc());
3399
3400	AutoReadLock alock (this);
3401
3402	/* UUID */
3403	aEntryNode.setValue <Guid> ("uuid", mData->mUuid);
3404	/* settings file name (possibly, relative) */
3405	aEntryNode.setValue <Bstr> ("src", mData->mConfigFile);
3406
3407	return S_OK;
3408	}
3409
3410	/**
3411	* Calculates the absolute path of the given path taking the directory of the
3412	* machine settings file as the current directory.
3413	*
3414	* @param aPath Path to calculate the absolute path for.
3415	* @param aResult Where to put the result (used only on success, can be the
3416	* same Utf8Str instance as passed in @a aPath).
3417	* @return IPRT result.
3418	*
3419	* @note Locks this object for reading.
3420	*/
3421	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
3422	{
3423	AutoCaller autoCaller (this);
3424	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3425
3426	AutoReadLock alock (this);
3427
3428	AssertReturn (!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
3429
3430	Utf8Str settingsDir = mData->mConfigFileFull;
3431
3432	RTPathStripFilename (settingsDir.mutableRaw());
3433	char folder [RTPATH_MAX];
3434	int vrc = RTPathAbsEx (settingsDir, aPath, folder, sizeof (folder));
3435	if (RT_SUCCESS (vrc))
3436	aResult = folder;
3437
3438	return vrc;
3439	}
3440
3441	/**
3442	* Tries to calculate the relative path of the given absolute path using the
3443	* directory of the machine settings file as the base directory.
3444	*
3445	* @param aPath Absolute path to calculate the relative path for.
3446	* @param aResult Where to put the result (used only when it's possible to
3447	* make a relative path from the given absolute path; otherwise
3448	* left untouched).
3449	*
3450	* @note Locks this object for reading.
3451	*/
3452	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
3453	{
3454	AutoCaller autoCaller (this);
3455	AssertComRCReturn (autoCaller.rc(), (void) 0);
3456
3457	AutoReadLock alock (this);
3458
3459	AssertReturnVoid (!mData->mConfigFileFull.isNull());
3460
3461	Utf8Str settingsDir = mData->mConfigFileFull;
3462
3463	RTPathStripFilename (settingsDir.mutableRaw());
3464	if (RTPathStartsWith (aPath, settingsDir))
3465	{
3466	/* when assigning, we create a separate Utf8Str instance because both
3467	* aPath and aResult can point to the same memory location when this
3468	* func is called (if we just do aResult = aPath, aResult will be freed
3469	* first, and since its the same as aPath, an attempt to copy garbage
3470	* will be made. */
3471	aResult = Utf8Str (aPath + settingsDir.length() + 1);
3472	}
3473	}
3474
3475	/**
3476	* Returns the full path to the machine's log folder in the
3477	* \a aLogFolder argument.
3478	*/
3479	void Machine::getLogFolder (Utf8Str &aLogFolder)
3480	{
3481	AutoCaller autoCaller (this);
3482	AssertComRCReturnVoid (autoCaller.rc());
3483
3484	AutoReadLock alock (this);
3485
3486	Utf8Str settingsDir;
3487	if (isInOwnDir (&settingsDir))
3488	{
3489	/* Log folder is <Machines>/<VM_Name>/Logs */
3490	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
3491	}
3492	else
3493	{
3494	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
3495	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
3496	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
3497	RTPATH_DELIMITER);
3498	}
3499	}
3500
3501	/**
3502	* @note Locks this object for writing, calls the client process (outside the
3503	* lock).
3504	*/
3505	HRESULT Machine::openSession (IInternalSessionControl *aControl)
3506	{
3507	LogFlowThisFuncEnter();
3508
3509	AssertReturn (aControl, E_FAIL);
3510
3511	AutoCaller autoCaller (this);
3512	CheckComRCReturnRC (autoCaller.rc());
3513
3514	AutoWriteLock alock (this);
3515
3516	if (!mData->mRegistered)
3517	return setError (E_UNEXPECTED,
3518	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3519
3520	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3521
3522	if (mData->mSession.mState == SessionState_Open \|\|
3523	mData->mSession.mState == SessionState_Closing)
3524	return setError (VBOX_E_INVALID_OBJECT_STATE,
3525	tr ("A session for the machine '%ls' is currently open "
3526	"(or being closed)"),
3527	mUserData->mName.raw());
3528
3529	/* may not be busy */
3530	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3531
3532	/* get the session PID */
3533	RTPROCESS pid = NIL_RTPROCESS;
3534	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
3535	aControl->GetPID ((ULONG *) &pid);
3536	Assert (pid != NIL_RTPROCESS);
3537
3538	if (mData->mSession.mState == SessionState_Spawning)
3539	{
3540	/* This machine is awaiting for a spawning session to be opened, so
3541	* reject any other open attempts from processes other than one
3542	* started by #openRemoteSession(). */
3543
3544	LogFlowThisFunc (("mSession.mPid=%d(0x%x)\n",
3545	mData->mSession.mPid, mData->mSession.mPid));
3546	LogFlowThisFunc (("session.pid=%d(0x%x)\n", pid, pid));
3547
3548	if (mData->mSession.mPid != pid)
3549	return setError (E_ACCESSDENIED,
3550	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
3551	"session with the machine named '%ls', while only a process "
3552	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
3553	pid, mUserData->mName.raw(), mData->mSession.mPid);
3554	}
3555
3556	/* create a SessionMachine object */
3557	ComObjPtr <SessionMachine> sessionMachine;
3558	sessionMachine.createObject();
3559	HRESULT rc = sessionMachine->init (this);
3560	AssertComRC (rc);
3561
3562	/* NOTE: doing return from this function after this point but
3563	* before the end is forbidden since it may call SessionMachine::uninit()
3564	* (through the ComObjPtr's destructor) which requests the VirtualBox write
3565	* lock while still holding the Machine lock in alock so that a deadlock
3566	* is possible due to the wrong lock order. */
3567
3568	if (SUCCEEDED (rc))
3569	{
3570	#ifdef VBOX_WITH_RESOURCE_USAGE_API
3571	registerMetrics (mParent->performanceCollector(), this, pid);
3572	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
3573
3574	/*
3575	* Set the session state to Spawning to protect against subsequent
3576	* attempts to open a session and to unregister the machine after
3577	* we leave the lock.
3578	*/
3579	SessionState_T origState = mData->mSession.mState;
3580	mData->mSession.mState = SessionState_Spawning;
3581
3582	/*
3583	* Leave the lock before calling the client process -- it will call
3584	* Machine/SessionMachine methods. Leaving the lock here is quite safe
3585	* because the state is Spawning, so that openRemotesession() and
3586	* openExistingSession() calls will fail. This method, called before we
3587	* enter the lock again, will fail because of the wrong PID.
3588	*
3589	* Note that mData->mSession.mRemoteControls accessed outside
3590	* the lock may not be modified when state is Spawning, so it's safe.
3591	*/
3592	alock.leave();
3593
3594	LogFlowThisFunc (("Calling AssignMachine()...\n"));
3595	rc = aControl->AssignMachine (sessionMachine);
3596	LogFlowThisFunc (("AssignMachine() returned %08X\n", rc));
3597
3598	/* The failure may occur w/o any error info (from RPC), so provide one */
3599	if (FAILED (rc))
3600	setError (VBOX_E_VM_ERROR,
3601	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3602
3603	if (SUCCEEDED (rc) && origState == SessionState_Spawning)
3604	{
3605	/* complete the remote session initialization */
3606
3607	/* get the console from the direct session */
3608	ComPtr <IConsole> console;
3609	rc = aControl->GetRemoteConsole (console.asOutParam());
3610	ComAssertComRC (rc);
3611
3612	if (SUCCEEDED (rc) && !console)
3613	{
3614	ComAssert (!!console);
3615	rc = E_FAIL;
3616	}
3617
3618	/* assign machine & console to the remote session */
3619	if (SUCCEEDED (rc))
3620	{
3621	/*
3622	* after openRemoteSession(), the first and the only
3623	* entry in remoteControls is that remote session
3624	*/
3625	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3626	rc = mData->mSession.mRemoteControls.front()->
3627	AssignRemoteMachine (sessionMachine, console);
3628	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3629
3630	/* The failure may occur w/o any error info (from RPC), so provide one */
3631	if (FAILED (rc))
3632	setError (VBOX_E_VM_ERROR,
3633	tr ("Failed to assign the machine to the remote session (%Rrc)"), rc);
3634	}
3635
3636	if (FAILED (rc))
3637	aControl->Uninitialize();
3638	}
3639
3640	/* enter the lock again */
3641	alock.enter();
3642
3643	/* Restore the session state */
3644	mData->mSession.mState = origState;
3645	}
3646
3647	/* finalize spawning anyway (this is why we don't return on errors above) */
3648	if (mData->mSession.mState == SessionState_Spawning)
3649	{
3650	/* Note that the progress object is finalized later */
3651
3652	/* We don't reset mSession.mPid here because it is necessary for
3653	* SessionMachine::uninit() to reap the child process later. */
3654
3655	if (FAILED (rc))
3656	{
3657	/* Close the remote session, remove the remote control from the list
3658	* and reset session state to Closed (@note keep the code in sync
3659	* with the relevant part in openSession()). */
3660
3661	Assert (mData->mSession.mRemoteControls.size() == 1);
3662	if (mData->mSession.mRemoteControls.size() == 1)
3663	{
3664	ErrorInfoKeeper eik;
3665	mData->mSession.mRemoteControls.front()->Uninitialize();
3666	}
3667
3668	mData->mSession.mRemoteControls.clear();
3669	mData->mSession.mState = SessionState_Closed;
3670	}
3671	}
3672	else
3673	{
3674	/* memorize PID of the directly opened session */
3675	if (SUCCEEDED (rc))
3676	mData->mSession.mPid = pid;
3677	}
3678
3679	if (SUCCEEDED (rc))
3680	{
3681	/* memorize the direct session control and cache IUnknown for it */
3682	mData->mSession.mDirectControl = aControl;
3683	mData->mSession.mState = SessionState_Open;
3684	/* associate the SessionMachine with this Machine */
3685	mData->mSession.mMachine = sessionMachine;
3686
3687	/* request an IUnknown pointer early from the remote party for later
3688	* identity checks (it will be internally cached within mDirectControl
3689	* at least on XPCOM) */
3690	ComPtr <IUnknown> unk = mData->mSession.mDirectControl;
3691	NOREF (unk);
3692	}
3693
3694	if (mData->mSession.mProgress)
3695	{
3696	/* finalize the progress after setting the state, for consistency */
3697	mData->mSession.mProgress->notifyComplete (rc);
3698	mData->mSession.mProgress.setNull();
3699	}
3700
3701	/* Leave the lock since SessionMachine::uninit() locks VirtualBox which
3702	* would break the lock order */
3703	alock.leave();
3704
3705	/* uninitialize the created session machine on failure */
3706	if (FAILED (rc))
3707	sessionMachine->uninit();
3708
3709	LogFlowThisFunc (("rc=%08X\n", rc));
3710	LogFlowThisFuncLeave();
3711	return rc;
3712	}
3713
3714	/**
3715	* @note Locks this object for writing, calls the client process
3716	* (inside the lock).
3717	*/
3718	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
3719	IN_BSTR aType, IN_BSTR aEnvironment,
3720	Progress *aProgress)
3721	{
3722	LogFlowThisFuncEnter();
3723
3724	AssertReturn (aControl, E_FAIL);
3725	AssertReturn (aProgress, E_FAIL);
3726
3727	AutoCaller autoCaller (this);
3728	CheckComRCReturnRC (autoCaller.rc());
3729
3730	AutoWriteLock alock (this);
3731
3732	if (!mData->mRegistered)
3733	return setError (E_UNEXPECTED,
3734	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3735
3736	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3737
3738	if (mData->mSession.mState == SessionState_Open \|\|
3739	mData->mSession.mState == SessionState_Spawning \|\|
3740	mData->mSession.mState == SessionState_Closing)
3741	return setError (VBOX_E_INVALID_OBJECT_STATE,
3742	tr ("A session for the machine '%ls' is currently open "
3743	"(or being opened or closed)"),
3744	mUserData->mName.raw());
3745
3746	/* may not be busy */
3747	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3748
3749	/* get the path to the executable */
3750	char path [RTPATH_MAX];
3751	RTPathAppPrivateArch (path, RTPATH_MAX);
3752	size_t sz = strlen (path);
3753	path [sz++] = RTPATH_DELIMITER;
3754	path [sz] = 0;
3755	char *cmd = path + sz;
3756	sz = RTPATH_MAX - sz;
3757
3758	int vrc = VINF_SUCCESS;
3759	RTPROCESS pid = NIL_RTPROCESS;
3760
3761	RTENV env = RTENV_DEFAULT;
3762
3763	if (aEnvironment)
3764	{
3765	char *newEnvStr = NULL;
3766
3767	do
3768	{
3769	/* clone the current environment */
3770	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3771	AssertRCBreakStmt (vrc2, vrc = vrc2);
3772
3773	newEnvStr = RTStrDup (Utf8Str (aEnvironment));
3774	AssertPtrBreakStmt (newEnvStr, vrc = vrc2);
3775
3776	/* put new variables to the environment
3777	* (ignore empty variable names here since RTEnv API
3778	* intentionally doesn't do that) */
3779	char *var = newEnvStr;
3780	for (char p = newEnvStr; p; ++ p)
3781	{
3782	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3783	{
3784	*p = '\0';
3785	if (*var)
3786	{
3787	char *val = strchr (var, '=');
3788	if (val)
3789	{
3790	*val++ = '\0';
3791	vrc2 = RTEnvSetEx (env, var, val);
3792	}
3793	else
3794	vrc2 = RTEnvUnsetEx (env, var);
3795	if (RT_FAILURE (vrc2))
3796	break;
3797	}
3798	var = p + 1;
3799	}
3800	}
3801	if (RT_SUCCESS (vrc2) && *var)
3802	vrc2 = RTEnvPutEx (env, var);
3803
3804	AssertRCBreakStmt (vrc2, vrc = vrc2);
3805	}
3806	while (0);
3807
3808	if (newEnvStr != NULL)
3809	RTStrFree (newEnvStr);
3810	}
3811
3812	Bstr type (aType);
3813
3814	/* Qt is default */
3815	#ifdef VBOX_WITH_QTGUI
3816	if (type == "gui" \|\| type == "GUI/Qt")
3817	{
3818	# ifdef RT_OS_DARWIN /* Avoid Launch Services confusing this with the selector by using a helper app. */
3819	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3820	# else
3821	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3822	# endif
3823	Assert (sz >= sizeof (VirtualBox_exe));
3824	strcpy (cmd, VirtualBox_exe);
3825
3826	Utf8Str idStr = mData->mUuid.toString();
3827	# ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3828	const char * args[] = {path, "-startvm", idStr, 0 };
3829	# else
3830	Utf8Str name = mUserData->mName;
3831	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3832	# endif
3833	vrc = RTProcCreate (path, args, env, 0, &pid);
3834	}
3835	#else /* !VBOX_WITH_QTGUI */
3836	if (0)
3837	;
3838	#endif /* VBOX_WITH_QTGUI */
3839
3840	else
3841
3842	#ifdef VBOX_WITH_VRDP
3843	if (type == "vrdp")
3844	{
3845	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3846	Assert (sz >= sizeof (VBoxVRDP_exe));
3847	strcpy (cmd, VBoxVRDP_exe);
3848
3849	Utf8Str idStr = mData->mUuid.toString();
3850	# ifdef RT_OS_WINDOWS
3851	const char * args[] = {path, "-startvm", idStr, 0 };
3852	# else
3853	Utf8Str name = mUserData->mName;
3854	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3855	# endif
3856	vrc = RTProcCreate (path, args, env, 0, &pid);
3857	}
3858	#else /* !VBOX_WITH_VRDP */
3859	if (0)
3860	;
3861	#endif /* !VBOX_WITH_VRDP */
3862
3863	else
3864
3865	#ifdef VBOX_WITH_HEADLESS
3866	if (type == "capture")
3867	{
3868	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3869	Assert (sz >= sizeof (VBoxVRDP_exe));
3870	strcpy (cmd, VBoxVRDP_exe);
3871
3872	Utf8Str idStr = mData->mUuid.toString();
3873	# ifdef RT_OS_WINDOWS
3874	const char * args[] = {path, "-startvm", idStr, "-capture", 0 };
3875	# else
3876	Utf8Str name = mUserData->mName;
3877	const char * args[] = {path, "-comment", name, "-startvm", idStr, "-capture", 0 };
3878	# endif
3879	vrc = RTProcCreate (path, args, env, 0, &pid);
3880	}
3881	#else /* !VBOX_WITH_HEADLESS */
3882	if (0)
3883	;
3884	#endif /* !VBOX_WITH_HEADLESS */
3885	else
3886	{
3887	RTEnvDestroy (env);
3888	return setError (E_INVALIDARG,
3889	tr ("Invalid session type: '%ls'"), aType);
3890	}
3891
3892	RTEnvDestroy (env);
3893
3894	if (RT_FAILURE (vrc))
3895	return setError (VBOX_E_IPRT_ERROR,
3896	tr ("Could not launch a process for the machine '%ls' (%Rrc)"),
3897	mUserData->mName.raw(), vrc);
3898
3899	LogFlowThisFunc (("launched.pid=%d(0x%x)\n", pid, pid));
3900
3901	/*
3902	* Note that we don't leave the lock here before calling the client,
3903	* because it doesn't need to call us back if called with a NULL argument.
3904	* Leaving the lock herer is dangerous because we didn't prepare the
3905	* launch data yet, but the client we've just started may happen to be
3906	* too fast and call openSession() that will fail (because of PID, etc.),
3907	* so that the Machine will never get out of the Spawning session state.
3908	*/
3909
3910	/* inform the session that it will be a remote one */
3911	LogFlowThisFunc (("Calling AssignMachine (NULL)...\n"));
3912	HRESULT rc = aControl->AssignMachine (NULL);
3913	LogFlowThisFunc (("AssignMachine (NULL) returned %08X\n", rc));
3914
3915	if (FAILED (rc))
3916	{
3917	/* restore the session state */
3918	mData->mSession.mState = SessionState_Closed;
3919	/* The failure may occur w/o any error info (from RPC), so provide one */
3920	return setError (VBOX_E_VM_ERROR,
3921	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3922	}
3923
3924	/* attach launch data to the machine */
3925	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3926	mData->mSession.mRemoteControls.push_back (aControl);
3927	mData->mSession.mProgress = aProgress;
3928	mData->mSession.mPid = pid;
3929	mData->mSession.mState = SessionState_Spawning;
3930	mData->mSession.mType = type;
3931
3932	LogFlowThisFuncLeave();
3933	return S_OK;
3934	}
3935
3936	/**
3937	* @note Locks this object for writing, calls the client process
3938	* (outside the lock).
3939	*/
3940	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3941	{
3942	LogFlowThisFuncEnter();
3943
3944	AssertReturn (aControl, E_FAIL);
3945
3946	AutoCaller autoCaller (this);
3947	CheckComRCReturnRC (autoCaller.rc());
3948
3949	AutoWriteLock alock (this);
3950
3951	if (!mData->mRegistered)
3952	return setError (E_UNEXPECTED,
3953	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3954
3955	LogFlowThisFunc (("mSession.state=%d\n", mData->mSession.mState));
3956
3957	if (mData->mSession.mState != SessionState_Open)
3958	return setError (VBOX_E_INVALID_SESSION_STATE,
3959	tr ("The machine '%ls' does not have an open session"),
3960	mUserData->mName.raw());
3961
3962	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
3963
3964	/*
3965	* Get the console from the direct session (note that we don't leave the
3966	* lock here because GetRemoteConsole must not call us back).
3967	*/
3968	ComPtr <IConsole> console;
3969	HRESULT rc = mData->mSession.mDirectControl->
3970	GetRemoteConsole (console.asOutParam());
3971	if (FAILED (rc))
3972	{
3973	/* The failure may occur w/o any error info (from RPC), so provide one */
3974	return setError (VBOX_E_VM_ERROR,
3975	tr ("Failed to get a console object from the direct session (%Rrc)"), rc);
3976	}
3977
3978	ComAssertRet (!console.isNull(), E_FAIL);
3979
3980	ComObjPtr <SessionMachine> sessionMachine = mData->mSession.mMachine;
3981	AssertReturn (!sessionMachine.isNull(), E_FAIL);
3982
3983	/*
3984	* Leave the lock before calling the client process. It's safe here
3985	* since the only thing to do after we get the lock again is to add
3986	* the remote control to the list (which doesn't directly influence
3987	* anything).
3988	*/
3989	alock.leave();
3990
3991	/* attach the remote session to the machine */
3992	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3993	rc = aControl->AssignRemoteMachine (sessionMachine, console);
3994	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3995
3996	/* The failure may occur w/o any error info (from RPC), so provide one */
3997	if (FAILED (rc))
3998	return setError (VBOX_E_VM_ERROR,
3999	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
4000
4001	alock.enter();
4002
4003	/* need to revalidate the state after entering the lock again */
4004	if (mData->mSession.mState != SessionState_Open)
4005	{
4006	aControl->Uninitialize();
4007
4008	return setError (VBOX_E_INVALID_SESSION_STATE,
4009	tr ("The machine '%ls' does not have an open session"),
4010	mUserData->mName.raw());
4011	}
4012
4013	/* store the control in the list */
4014	mData->mSession.mRemoteControls.push_back (aControl);
4015
4016	LogFlowThisFuncLeave();
4017	return S_OK;
4018	}
4019
4020	/**
4021	* Returns @c true if the given machine has an open direct session and returns
4022	* the session machine instance and additional session data (on some platforms)
4023	* if so.
4024	*
4025	* Note that when the method returns @c false, the arguments remain unchanged.
4026	*
4027	* @param aMachine Session machine object.
4028	* @param aControl Direct session control object (optional).
4029	* @param aIPCSem Mutex IPC semaphore handle for this machine (optional).
4030	*
4031	* @note locks this object for reading.
4032	*/
4033	#if defined (RT_OS_WINDOWS)
4034	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4035	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4036	HANDLE aIPCSem /= NULL*/,
4037	bool aAllowClosing /= false/)
4038	#elif defined (RT_OS_OS2)
4039	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4040	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4041	HMTX aIPCSem /= NULL*/,
4042	bool aAllowClosing /= false/)
4043	#else
4044	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4045	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4046	bool aAllowClosing /= false/)
4047	#endif
4048	{
4049	AutoLimitedCaller autoCaller (this);
4050	AssertComRCReturn (autoCaller.rc(), false);
4051
4052	/* just return false for inaccessible machines */
4053	if (autoCaller.state() != Ready)
4054	return false;
4055
4056	AutoReadLock alock (this);
4057
4058	if (mData->mSession.mState == SessionState_Open \|\|
4059	(aAllowClosing && mData->mSession.mState == SessionState_Closing))
4060	{
4061	AssertReturn (!mData->mSession.mMachine.isNull(), false);
4062
4063	aMachine = mData->mSession.mMachine;
4064
4065	if (aControl != NULL)
4066	*aControl = mData->mSession.mDirectControl;
4067
4068	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4069	/* Additional session data */
4070	if (aIPCSem != NULL)
4071	*aIPCSem = aMachine->mIPCSem;
4072	#endif
4073	return true;
4074	}
4075
4076	return false;
4077	}
4078
4079	/**
4080	* Returns @c true if the given machine has an spawning direct session and
4081	* returns and additional session data (on some platforms) if so.
4082	*
4083	* Note that when the method returns @c false, the arguments remain unchanged.
4084	*
4085	* @param aPID PID of the spawned direct session process.
4086	*
4087	* @note locks this object for reading.
4088	*/
4089	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4090	bool Machine::isSessionSpawning (RTPROCESS aPID /= NULL*/)
4091	#else
4092	bool Machine::isSessionSpawning()
4093	#endif
4094	{
4095	AutoLimitedCaller autoCaller (this);
4096	AssertComRCReturn (autoCaller.rc(), false);
4097
4098	/* just return false for inaccessible machines */
4099	if (autoCaller.state() != Ready)
4100	return false;
4101
4102	AutoReadLock alock (this);
4103
4104	if (mData->mSession.mState == SessionState_Spawning)
4105	{
4106	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4107	/* Additional session data */
4108	if (aPID != NULL)
4109	{
4110	AssertReturn (mData->mSession.mPid != NIL_RTPROCESS, false);
4111	*aPID = mData->mSession.mPid;
4112	}
4113	#endif
4114	return true;
4115	}
4116
4117	return false;
4118	}
4119
4120	/**
4121	* Called from the client watcher thread to check for unexpected client process
4122	* death during Session_Spawning state (e.g. before it successfully opened a
4123	* direct session).
4124	*
4125	* On Win32 and on OS/2, this method is called only when we've got the
4126	* direct client's process termination notification, so it always returns @c
4127	* true.
4128	*
4129	* On other platforms, this method returns @c true if the client process is
4130	* terminated and @c false if it's still alive.
4131	*
4132	* @note Locks this object for writing.
4133	*/
4134	bool Machine::checkForSpawnFailure()
4135	{
4136	AutoCaller autoCaller (this);
4137	if (!autoCaller.isOk())
4138	{
4139	/* nothing to do */
4140	LogFlowThisFunc (("Already uninitialized!"));
4141	return true;
4142	}
4143
4144	/* VirtualBox::addProcessToReap() needs a write lock */
4145	AutoMultiWriteLock2 alock (mParent, this);
4146
4147	if (mData->mSession.mState != SessionState_Spawning)
4148	{
4149	/* nothing to do */
4150	LogFlowThisFunc (("Not spawning any more!"));
4151	return true;
4152	}
4153
4154	HRESULT rc = S_OK;
4155
4156	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4157
4158	/* the process was already unexpectedly terminated, we just need to set an
4159	* error and finalize session spawning */
4160	rc = setError (E_FAIL,
4161	tr ("Virtual machine '%ls' has terminated unexpectedly "
4162	"during startup"),
4163	name().raw());
4164	#else
4165
4166	RTPROCSTATUS status;
4167	int vrc = ::RTProcWait (mData->mSession.mPid, RTPROCWAIT_FLAGS_NOBLOCK,
4168	&status);
4169
4170	if (vrc != VERR_PROCESS_RUNNING)
4171	rc = setError (E_FAIL,
4172	tr ("Virtual machine '%ls' has terminated unexpectedly "
4173	"during startup"),
4174	name().raw());
4175	#endif
4176
4177	if (FAILED (rc))
4178	{
4179	/* Close the remote session, remove the remote control from the list
4180	* and reset session state to Closed (@note keep the code in sync with
4181	* the relevant part in checkForSpawnFailure()). */
4182
4183	Assert (mData->mSession.mRemoteControls.size() == 1);
4184	if (mData->mSession.mRemoteControls.size() == 1)
4185	{
4186	ErrorInfoKeeper eik;
4187	mData->mSession.mRemoteControls.front()->Uninitialize();
4188	}
4189
4190	mData->mSession.mRemoteControls.clear();
4191	mData->mSession.mState = SessionState_Closed;
4192
4193	/* finalize the progress after setting the state, for consistency */
4194	mData->mSession.mProgress->notifyComplete (rc);
4195	mData->mSession.mProgress.setNull();
4196
4197	mParent->addProcessToReap (mData->mSession.mPid);
4198	mData->mSession.mPid = NIL_RTPROCESS;
4199
4200	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
4201	return true;
4202	}
4203
4204	return false;
4205	}
4206
4207	/**
4208	* Checks that the registered flag of the machine can be set according to
4209	* the argument and sets it. On success, commits and saves all settings.
4210	*
4211	* @note When this machine is inaccessible, the only valid value for \a
4212	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
4213	* inaccessible machines are not currently supported. Note that unregistering
4214	* an inaccessible machine will \b uninitialize this machine object. Therefore,
4215	* the caller must make sure there are no active Machine::addCaller() calls
4216	* on the current thread because this will block Machine::uninit().
4217	*
4218	* @note Must be called from mParent's write lock. Locks this object and
4219	* children for writing.
4220	*/
4221	HRESULT Machine::trySetRegistered (BOOL aRegistered)
4222	{
4223	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
4224
4225	AutoLimitedCaller autoCaller (this);
4226	AssertComRCReturnRC (autoCaller.rc());
4227
4228	AutoWriteLock alock (this);
4229
4230	/* wait for state dependants to drop to zero */
4231	ensureNoStateDependencies();
4232
4233	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
4234
4235	if (!mData->mAccessible)
4236	{
4237	/* A special case: the machine is not accessible. */
4238
4239	/* inaccessible machines can only be unregistered */
4240	AssertReturn (!aRegistered, E_FAIL);
4241
4242	/* Uninitialize ourselves here because currently there may be no
4243	* unregistered that are inaccessible (this state combination is not
4244	* supported). Note releasing the caller and leaving the lock before
4245	* calling uninit() */
4246
4247	alock.leave();
4248	autoCaller.release();
4249
4250	uninit();
4251
4252	return S_OK;
4253	}
4254
4255	AssertReturn (autoCaller.state() == Ready, E_FAIL);
4256
4257	/* we will probably modify these and want to prevent concurrent
4258	* modifications until we finish */
4259	AutoWriteLock dvdLock (mDVDDrive);
4260	AutoWriteLock floppyLock (mFloppyDrive);
4261
4262	if (aRegistered)
4263	{
4264	if (mData->mRegistered)
4265	return setError (VBOX_E_INVALID_OBJECT_STATE,
4266	tr ("The machine '%ls' with UUID {%s} is already registered"),
4267	mUserData->mName.raw(),
4268	mData->mUuid.toString().raw());
4269	}
4270	else
4271	{
4272	if (mData->mMachineState == MachineState_Saved)
4273	return setError (VBOX_E_INVALID_VM_STATE,
4274	tr ("Cannot unregister the machine '%ls' because it "
4275	"is in the Saved state"),
4276	mUserData->mName.raw());
4277
4278	size_t snapshotCount = 0;
4279	if (mData->mFirstSnapshot)
4280	snapshotCount = mData->mFirstSnapshot->descendantCount() + 1;
4281	if (snapshotCount)
4282	return setError (VBOX_E_INVALID_OBJECT_STATE,
4283	tr ("Cannot unregister the machine '%ls' because it "
4284	"has %d snapshots"),
4285	mUserData->mName.raw(), snapshotCount);
4286
4287	if (mData->mSession.mState != SessionState_Closed)
4288	return setError (VBOX_E_INVALID_OBJECT_STATE,
4289	tr ("Cannot unregister the machine '%ls' because it has an "
4290	"open session"),
4291	mUserData->mName.raw());
4292
4293	if (mHDData->mAttachments.size() != 0)
4294	return setError (VBOX_E_INVALID_OBJECT_STATE,
4295	tr ("Cannot unregister the machine '%ls' because it "
4296	"has %d hard disks attached"),
4297	mUserData->mName.raw(), mHDData->mAttachments.size());
4298
4299	/* Note that we do not prevent unregistration of a DVD or Floppy image
4300	* is attached: as opposed to hard disks detaching such an image
4301	* implicitly in this method (which we will do below) won't have any
4302	* side effects (like detached orphan base and diff hard disks etc).*/
4303	}
4304
4305	HRESULT rc = S_OK;
4306
4307	/* Ensure the settings are saved. If we are going to be registered and
4308	* isConfigLocked() is FALSE then it means that no config file exists yet,
4309	* so create it by calling saveSettings() too. */
4310	if (isModified() \|\| (aRegistered && !isConfigLocked()))
4311	{
4312	rc = saveSettings();
4313	CheckComRCReturnRC (rc);
4314	}
4315
4316	/* Implicitly detach DVD/Floppy */
4317	rc = mDVDDrive->unmount();
4318	if (SUCCEEDED (rc))
4319	rc = mFloppyDrive->unmount();
4320
4321	if (SUCCEEDED (rc))
4322	{
4323	/* we may have had implicit modifications we want to fix on success */
4324	commit();
4325
4326	mData->mRegistered = aRegistered;
4327	}
4328	else
4329	{
4330	/* we may have had implicit modifications we want to cancel on failure*/
4331	rollback (false /* aNotify */);
4332	}
4333
4334	return rc;
4335	}
4336
4337	/**
4338	* Increases the number of objects dependent on the machine state or on the
4339	* registered state. Guarantees that these two states will not change at least
4340	* until #releaseStateDependency() is called.
4341	*
4342	* Depending on the @a aDepType value, additional state checks may be made.
4343	* These checks will set extended error info on failure. See
4344	* #checkStateDependency() for more info.
4345	*
4346	* If this method returns a failure, the dependency is not added and the caller
4347	* is not allowed to rely on any particular machine state or registration state
4348	* value and may return the failed result code to the upper level.
4349	*
4350	* @param aDepType Dependency type to add.
4351	* @param aState Current machine state (NULL if not interested).
4352	* @param aRegistered Current registered state (NULL if not interested).
4353	*
4354	* @note Locks this object for writing.
4355	*/
4356	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
4357	MachineState_T aState / = NULL */,
4358	BOOL aRegistered / = NULL */)
4359	{
4360	AutoCaller autoCaller (this);
4361	AssertComRCReturnRC (autoCaller.rc());
4362
4363	AutoWriteLock alock (this);
4364
4365	HRESULT rc = checkStateDependency (aDepType);
4366	CheckComRCReturnRC (rc);
4367
4368	{
4369	if (mData->mMachineStateChangePending != 0)
4370	{
4371	/* ensureNoStateDependencies() is waiting for state dependencies to
4372	* drop to zero so don't add more. It may make sense to wait a bit
4373	* and retry before reporting an error (since the pending state
4374	* transition should be really quick) but let's just assert for
4375	* now to see if it ever happens on practice. */
4376
4377	AssertFailed();
4378
4379	return setError (E_ACCESSDENIED,
4380	tr ("Machine state change is in progress. "
4381	"Please retry the operation later."));
4382	}
4383
4384	++ mData->mMachineStateDeps;
4385	Assert (mData->mMachineStateDeps != 0 /* overflow */);
4386	}
4387
4388	if (aState)
4389	*aState = mData->mMachineState;
4390	if (aRegistered)
4391	*aRegistered = mData->mRegistered;
4392
4393	return S_OK;
4394	}
4395
4396	/**
4397	* Decreases the number of objects dependent on the machine state.
4398	* Must always complete the #addStateDependency() call after the state
4399	* dependency is no more necessary.
4400	*/
4401	void Machine::releaseStateDependency()
4402	{
4403	AutoCaller autoCaller (this);
4404	AssertComRCReturnVoid (autoCaller.rc());
4405
4406	AutoWriteLock alock (this);
4407
4408	AssertReturnVoid (mData->mMachineStateDeps != 0
4409	/* releaseStateDependency() w/o addStateDependency()? */);
4410	-- mData->mMachineStateDeps;
4411
4412	if (mData->mMachineStateDeps == 0)
4413	{
4414	/* inform ensureNoStateDependencies() that there are no more deps */
4415	if (mData->mMachineStateChangePending != 0)
4416	{
4417	Assert (mData->mMachineStateDepsSem != NIL_RTSEMEVENTMULTI);
4418	RTSemEventMultiSignal (mData->mMachineStateDepsSem);
4419	}
4420	}
4421	}
4422
4423	// protected methods
4424	/////////////////////////////////////////////////////////////////////////////
4425
4426	/**
4427	* Performs machine state checks based on the @a aDepType value. If a check
4428	* fails, this method will set extended error info, otherwise it will return
4429	* S_OK. It is supposed, that on failure, the caller will immedieately return
4430	* the return value of this method to the upper level.
4431	*
4432	* When @a aDepType is AnyStateDep, this method always returns S_OK.
4433	*
4434	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
4435	* current state of this machine object allows to change settings of the
4436	* machine (i.e. the machine is not registered, or registered but not running
4437	* and not saved). It is useful to call this method from Machine setters
4438	* before performing any change.
4439	*
4440	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
4441	* as for MutableStateDep except that if the machine is saved, S_OK is also
4442	* returned. This is useful in setters which allow changing machine
4443	* properties when it is in the saved state.
4444	*
4445	* @param aDepType Dependency type to check.
4446	*
4447	* @note Non Machine based classes should use #addStateDependency() and
4448	* #releaseStateDependency() methods or the smart AutoStateDependency
4449	* template.
4450	*
4451	* @note This method must be called from under this object's read or write
4452	* lock.
4453	*/
4454	HRESULT Machine::checkStateDependency (StateDependency aDepType)
4455	{
4456	switch (aDepType)
4457	{
4458	case AnyStateDep:
4459	{
4460	break;
4461	}
4462	case MutableStateDep:
4463	{
4464	if (mData->mRegistered &&
4465	(mType != IsSessionMachine \|\|
4466	mData->mMachineState > MachineState_Paused \|\|
4467	mData->mMachineState == MachineState_Saved))
4468	return setError (VBOX_E_INVALID_VM_STATE,
4469	tr ("The machine is not mutable (state is %d)"),
4470	mData->mMachineState);
4471	break;
4472	}
4473	case MutableOrSavedStateDep:
4474	{
4475	if (mData->mRegistered &&
4476	(mType != IsSessionMachine \|\|
4477	mData->mMachineState > MachineState_Paused))
4478	return setError (VBOX_E_INVALID_VM_STATE,
4479	tr ("The machine is not mutable (state is %d)"),
4480	mData->mMachineState);
4481	break;
4482	}
4483	}
4484
4485	return S_OK;
4486	}
4487
4488	/**
4489	* Helper to initialize all associated child objects and allocate data
4490	* structures.
4491	*
4492	* This method must be called as a part of the object's initialization procedure
4493	* (usually done in the #init() method).
4494	*
4495	* @note Must be called only from #init() or from #registeredInit().
4496	*/
4497	HRESULT Machine::initDataAndChildObjects()
4498	{
4499	AutoCaller autoCaller (this);
4500	AssertComRCReturnRC (autoCaller.rc());
4501	AssertComRCReturn (autoCaller.state() == InInit \|\|
4502	autoCaller.state() == Limited, E_FAIL);
4503
4504	AssertReturn (!mData->mAccessible, E_FAIL);
4505
4506	/* allocate data structures */
4507	mSSData.allocate();
4508	mUserData.allocate();
4509	mHWData.allocate();
4510	mHDData.allocate();
4511	mStorageControllers.allocate();
4512
4513	/* initialize mOSTypeId */
4514	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
4515
4516	/* create associated BIOS settings object */
4517	unconst (mBIOSSettings).createObject();
4518	mBIOSSettings->init (this);
4519
4520	#ifdef VBOX_WITH_VRDP
4521	/* create an associated VRDPServer object (default is disabled) */
4522	unconst (mVRDPServer).createObject();
4523	mVRDPServer->init (this);
4524	#endif
4525
4526	/* create an associated DVD drive object */
4527	unconst (mDVDDrive).createObject();
4528	mDVDDrive->init (this);
4529
4530	/* create an associated floppy drive object */
4531	unconst (mFloppyDrive).createObject();
4532	mFloppyDrive->init (this);
4533
4534	/* create associated serial port objects */
4535	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4536	{
4537	unconst (mSerialPorts [slot]).createObject();
4538	mSerialPorts [slot]->init (this, slot);
4539	}
4540
4541	/* create associated parallel port objects */
4542	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4543	{
4544	unconst (mParallelPorts [slot]).createObject();
4545	mParallelPorts [slot]->init (this, slot);
4546	}
4547
4548	/* create the audio adapter object (always present, default is disabled) */
4549	unconst (mAudioAdapter).createObject();
4550	mAudioAdapter->init (this);
4551
4552	/* create the USB controller object (always present, default is disabled) */
4553	unconst (mUSBController).createObject();
4554	mUSBController->init (this);
4555
4556	/* create associated network adapter objects */
4557	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4558	{
4559	unconst (mNetworkAdapters [slot]).createObject();
4560	mNetworkAdapters [slot]->init (this, slot);
4561	}
4562
4563	return S_OK;
4564	}
4565
4566	/**
4567	* Helper to uninitialize all associated child objects and to free all data
4568	* structures.
4569	*
4570	* This method must be called as a part of the object's uninitialization
4571	* procedure (usually done in the #uninit() method).
4572	*
4573	* @note Must be called only from #uninit() or from #registeredInit().
4574	*/
4575	void Machine::uninitDataAndChildObjects()
4576	{
4577	AutoCaller autoCaller (this);
4578	AssertComRCReturnVoid (autoCaller.rc());
4579	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
4580	autoCaller.state() == Limited);
4581
4582	/* uninit all children using addDependentChild()/removeDependentChild()
4583	* in their init()/uninit() methods */
4584	uninitDependentChildren();
4585
4586	/* tell all our other child objects we've been uninitialized */
4587
4588	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4589	{
4590	if (mNetworkAdapters [slot])
4591	{
4592	mNetworkAdapters [slot]->uninit();
4593	unconst (mNetworkAdapters [slot]).setNull();
4594	}
4595	}
4596
4597	if (mUSBController)
4598	{
4599	mUSBController->uninit();
4600	unconst (mUSBController).setNull();
4601	}
4602
4603	if (mAudioAdapter)
4604	{
4605	mAudioAdapter->uninit();
4606	unconst (mAudioAdapter).setNull();
4607	}
4608
4609	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4610	{
4611	if (mParallelPorts [slot])
4612	{
4613	mParallelPorts [slot]->uninit();
4614	unconst (mParallelPorts [slot]).setNull();
4615	}
4616	}
4617
4618	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4619	{
4620	if (mSerialPorts [slot])
4621	{
4622	mSerialPorts [slot]->uninit();
4623	unconst (mSerialPorts [slot]).setNull();
4624	}
4625	}
4626
4627	if (mFloppyDrive)
4628	{
4629	mFloppyDrive->uninit();
4630	unconst (mFloppyDrive).setNull();
4631	}
4632
4633	if (mDVDDrive)
4634	{
4635	mDVDDrive->uninit();
4636	unconst (mDVDDrive).setNull();
4637	}
4638
4639	#ifdef VBOX_WITH_VRDP
4640	if (mVRDPServer)
4641	{
4642	mVRDPServer->uninit();
4643	unconst (mVRDPServer).setNull();
4644	}
4645	#endif
4646
4647	if (mBIOSSettings)
4648	{
4649	mBIOSSettings->uninit();
4650	unconst (mBIOSSettings).setNull();
4651	}
4652
4653	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
4654	* instance is uninitialized; SessionMachine instances refer to real
4655	* Machine hard disks). This is necessary for a clean re-initialization of
4656	* the VM after successfully re-checking the accessibility state. Note
4657	* that in case of normal Machine or SnapshotMachine uninitialization (as
4658	* a result of unregistering or discarding the snapshot), outdated hard
4659	* disk attachments will already be uninitialized and deleted, so this
4660	* code will not affect them. */
4661	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
4662	{
4663	for (HDData::AttachmentList::const_iterator it =
4664	mHDData->mAttachments.begin();
4665	it != mHDData->mAttachments.end();
4666	++ it)
4667	{
4668	HRESULT rc = (*it)->hardDisk()->detachFrom (mData->mUuid,
4669	snapshotId());
4670	AssertComRC (rc);
4671	}
4672	}
4673
4674	if (mType == IsMachine)
4675	{
4676	/* reset some important fields of mData */
4677	mData->mCurrentSnapshot.setNull();
4678	mData->mFirstSnapshot.setNull();
4679	}
4680
4681	/* free data structures (the essential mData structure is not freed here
4682	* since it may be still in use) */
4683	mHDData.free();
4684	mStorageControllers.free();
4685	mHWData.free();
4686	mUserData.free();
4687	mSSData.free();
4688	}
4689
4690	/**
4691	* Makes sure that there are no machine state dependants. If necessary, waits
4692	* for the number of dependants to drop to zero.
4693	*
4694	* Make sure this method is called from under this object's write lock to
4695	* guarantee that no new dependants may be added when this method returns
4696	* control to the caller.
4697	*
4698	* @note Locks this object for writing. The lock will be released while waiting
4699	* (if necessary).
4700	*
4701	* @warning To be used only in methods that change the machine state!
4702	*/
4703	void Machine::ensureNoStateDependencies()
4704	{
4705	AssertReturnVoid (isWriteLockOnCurrentThread());
4706
4707	AutoWriteLock alock (this);
4708
4709	/* Wait for all state dependants if necessary */
4710	if (mData->mMachineStateDeps != 0)
4711	{
4712	/* lazy semaphore creation */
4713	if (mData->mMachineStateDepsSem == NIL_RTSEMEVENTMULTI)
4714	RTSemEventMultiCreate (&mData->mMachineStateDepsSem);
4715
4716	LogFlowThisFunc (("Waiting for state deps (%d) to drop to zero...\n",
4717	mData->mMachineStateDeps));
4718
4719	++ mData->mMachineStateChangePending;
4720
4721	/* reset the semaphore before waiting, the last dependant will signal
4722	* it */
4723	RTSemEventMultiReset (mData->mMachineStateDepsSem);
4724
4725	alock.leave();
4726
4727	RTSemEventMultiWait (mData->mMachineStateDepsSem, RT_INDEFINITE_WAIT);
4728
4729	alock.enter();
4730
4731	-- mData->mMachineStateChangePending;
4732	}
4733	}
4734
4735	/**
4736	* Changes the machine state and informs callbacks.
4737	*
4738	* This method is not intended to fail so it either returns S_OK or asserts (and
4739	* returns a failure).
4740	*
4741	* @note Locks this object for writing.
4742	*/
4743	HRESULT Machine::setMachineState (MachineState_T aMachineState)
4744	{
4745	LogFlowThisFuncEnter();
4746	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
4747
4748	AutoCaller autoCaller (this);
4749	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
4750
4751	AutoWriteLock alock (this);
4752
4753	/* wait for state dependants to drop to zero */
4754	ensureNoStateDependencies();
4755
4756	if (mData->mMachineState != aMachineState)
4757	{
4758	mData->mMachineState = aMachineState;
4759
4760	RTTimeNow (&mData->mLastStateChange);
4761
4762	mParent->onMachineStateChange (mData->mUuid, aMachineState);
4763	}
4764
4765	LogFlowThisFuncLeave();
4766	return S_OK;
4767	}
4768
4769	/**
4770	* Searches for a shared folder with the given logical name
4771	* in the collection of shared folders.
4772	*
4773	* @param aName logical name of the shared folder
4774	* @param aSharedFolder where to return the found object
4775	* @param aSetError whether to set the error info if the folder is
4776	* not found
4777	* @return
4778	* S_OK when found or VBOX_E_OBJECT_NOT_FOUND when not found
4779	*
4780	* @note
4781	* must be called from under the object's lock!
4782	*/
4783	HRESULT Machine::findSharedFolder (CBSTR aName,
4784	ComObjPtr <SharedFolder> &aSharedFolder,
4785	bool aSetError /* = false */)
4786	{
4787	bool found = false;
4788	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
4789	!found && it != mHWData->mSharedFolders.end();
4790	++ it)
4791	{
4792	AutoWriteLock alock (*it);
4793	found = (*it)->name() == aName;
4794	if (found)
4795	aSharedFolder = *it;
4796	}
4797
4798	HRESULT rc = found ? S_OK : VBOX_E_OBJECT_NOT_FOUND;
4799
4800	if (aSetError && !found)
4801	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
4802
4803	return rc;
4804	}
4805
4806	/**
4807	* Loads all the VM settings by walking down the <Machine> node.
4808	*
4809	* @param aRegistered true when the machine is being loaded on VirtualBox
4810	* startup
4811	*
4812	* @note This method is intended to be called only from init(), so it assumes
4813	* all machine data fields have appropriate default values when it is called.
4814	*
4815	* @note Doesn't lock any objects.
4816	*/
4817	HRESULT Machine::loadSettings (bool aRegistered)
4818	{
4819	LogFlowThisFuncEnter();
4820	AssertReturn (mType == IsMachine, E_FAIL);
4821
4822	AutoCaller autoCaller (this);
4823	AssertReturn (autoCaller.state() == InInit, E_FAIL);
4824
4825	HRESULT rc = S_OK;
4826
4827	try
4828	{
4829	using namespace settings;
4830	using namespace xml;
4831
4832	/* no concurrent file access is possible in init() so open by handle */
4833	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
4834	XmlTreeBackend tree;
4835
4836	rc = VirtualBox::loadSettingsTree_FirstTime (tree, file,
4837	mData->mSettingsFileVersion);
4838	CheckComRCThrowRC (rc);
4839
4840	Key machineNode = tree.rootKey().key ("Machine");
4841
4842	/* uuid (required) */
4843	Guid id = machineNode.value <Guid> ("uuid");
4844
4845	/* If the stored UUID is not empty, it means the registered machine
4846	* is being loaded. Compare the loaded UUID with the stored one taken
4847	* from the global registry. */
4848	if (!mData->mUuid.isEmpty())
4849	{
4850	if (mData->mUuid != id)
4851	{
4852	throw setError (E_FAIL,
4853	tr ("Machine UUID {%RTuuid} in '%ls' doesn't match its "
4854	"UUID {%s} in the registry file '%ls'"),
4855	id.raw(), mData->mConfigFileFull.raw(),
4856	mData->mUuid.toString().raw(),
4857	mParent->settingsFileName().raw());
4858	}
4859	}
4860	else
4861	unconst (mData->mUuid) = id;
4862
4863	/* name (required) */
4864	mUserData->mName = machineNode.stringValue ("name");
4865
4866	/* nameSync (optional, default is true) */
4867	mUserData->mNameSync = machineNode.value <bool> ("nameSync");
4868
4869	/* Description (optional, default is null) */
4870	{
4871	Key descNode = machineNode.findKey ("Description");
4872	if (!descNode.isNull())
4873	mUserData->mDescription = descNode.keyStringValue();
4874	else
4875	mUserData->mDescription.setNull();
4876	}
4877
4878	/* OSType (required) */
4879	{
4880	mUserData->mOSTypeId = machineNode.stringValue ("OSType");
4881
4882	/* look up the object by Id to check it is valid */
4883	ComPtr <IGuestOSType> guestOSType;
4884	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
4885	guestOSType.asOutParam());
4886	CheckComRCThrowRC (rc);
4887	}
4888
4889	/* stateFile (optional) */
4890	{
4891	Bstr stateFilePath = machineNode.stringValue ("stateFile");
4892	if (stateFilePath)
4893	{
4894	Utf8Str stateFilePathFull = stateFilePath;
4895	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4896	if (RT_FAILURE (vrc))
4897	{
4898	throw setError (E_FAIL,
4899	tr ("Invalid saved state file path '%ls' (%Rrc)"),
4900	stateFilePath.raw(), vrc);
4901	}
4902	mSSData->mStateFilePath = stateFilePathFull;
4903	}
4904	else
4905	mSSData->mStateFilePath.setNull();
4906	}
4907
4908	/*
4909	* currentSnapshot ID (optional)
4910	*
4911	* Note that due to XML Schema constaraints, this attribute, when
4912	* present, will guaranteedly refer to an existing snapshot
4913	* definition in XML
4914	*/
4915	Guid currentSnapshotId = machineNode.valueOr <Guid> ("currentSnapshot",
4916	Guid());
4917
4918	/* snapshotFolder (optional) */
4919	{
4920	Bstr folder = machineNode.stringValue ("snapshotFolder");
4921	rc = COMSETTER (SnapshotFolder) (folder);
4922	CheckComRCThrowRC (rc);
4923	}
4924
4925	/* currentStateModified (optional, default is true) */
4926	mData->mCurrentStateModified = machineNode.value <bool> ("currentStateModified");
4927
4928	/* lastStateChange (optional, defaults to now) */
4929	{
4930	RTTIMESPEC now;
4931	RTTimeNow (&now);
4932	mData->mLastStateChange =
4933	machineNode.valueOr <RTTIMESPEC> ("lastStateChange", now);
4934	}
4935
4936	/* aborted (optional, default is false) */
4937	bool aborted = machineNode.value <bool> ("aborted");
4938
4939	/*
4940	* note: all mUserData members must be assigned prior this point because
4941	* we need to commit changes in order to let mUserData be shared by all
4942	* snapshot machine instances.
4943	*/
4944	mUserData.commitCopy();
4945
4946	/* Snapshot node (optional) */
4947	{
4948	Key snapshotNode = machineNode.findKey ("Snapshot");
4949	if (!snapshotNode.isNull())
4950	{
4951	/* read all snapshots recursively */
4952	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
4953	CheckComRCThrowRC (rc);
4954	}
4955	}
4956
4957	Key hardwareNode = machineNode.key("Hardware");
4958
4959	/* Hardware node (required) */
4960	rc = loadHardware (hardwareNode);
4961	CheckComRCThrowRC (rc);
4962
4963	/* Load storage controllers */
4964	rc = loadStorageControllers (machineNode.key ("StorageControllers"), aRegistered);
4965	CheckComRCThrowRC (rc);
4966
4967	/*
4968	* NOTE: the assignment below must be the last thing to do,
4969	* otherwise it will be not possible to change the settings
4970	* somewehere in the code above because all setters will be
4971	* blocked by checkStateDependency (MutableStateDep).
4972	*/
4973
4974	/* set the machine state to Aborted or Saved when appropriate */
4975	if (aborted)
4976	{
4977	Assert (!mSSData->mStateFilePath);
4978	mSSData->mStateFilePath.setNull();
4979
4980	/* no need to use setMachineState() during init() */
4981	mData->mMachineState = MachineState_Aborted;
4982	}
4983	else if (mSSData->mStateFilePath)
4984	{
4985	/* no need to use setMachineState() during init() */
4986	mData->mMachineState = MachineState_Saved;
4987	}
4988	}
4989	catch (HRESULT err)
4990	{
4991	/* we assume that error info is set by the thrower */
4992	rc = err;
4993	}
4994	catch (...)
4995	{
4996	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
4997	}
4998
4999	LogFlowThisFuncLeave();
5000	return rc;
5001	}
5002
5003	/**
5004	* Recursively loads all snapshots starting from the given.
5005	*
5006	* @param aNode <Snapshot> node.
5007	* @param aCurSnapshotId Current snapshot ID from the settings file.
5008	* @param aParentSnapshot Parent snapshot.
5009	*/
5010	HRESULT Machine::loadSnapshot (const settings::Key &aNode,
5011	const Guid &aCurSnapshotId,
5012	Snapshot *aParentSnapshot)
5013	{
5014	using namespace settings;
5015
5016	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5017	AssertReturn (mType == IsMachine, E_FAIL);
5018
5019	/* create a snapshot machine object */
5020	ComObjPtr <SnapshotMachine> snapshotMachine;
5021	snapshotMachine.createObject();
5022
5023	HRESULT rc = S_OK;
5024
5025	/* required */
5026	Guid uuid = aNode.value <Guid> ("uuid");
5027
5028	{
5029	/* optional */
5030	Bstr stateFilePath = aNode.stringValue ("stateFile");
5031	if (stateFilePath)
5032	{
5033	Utf8Str stateFilePathFull = stateFilePath;
5034	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
5035	if (RT_FAILURE (vrc))
5036	return setError (E_FAIL,
5037	tr ("Invalid saved state file path '%ls' (%Rrc)"),
5038	stateFilePath.raw(), vrc);
5039
5040	stateFilePath = stateFilePathFull;
5041	}
5042
5043	/* Hardware node (required) */
5044	Key hardwareNode = aNode.key ("Hardware");
5045
5046	/* StorageControllers node (required) */
5047	Key storageNode = aNode.key ("StorageControllers");
5048
5049	/* initialize the snapshot machine */
5050	rc = snapshotMachine->init (this, hardwareNode, storageNode,
5051	uuid, stateFilePath);
5052	CheckComRCReturnRC (rc);
5053	}
5054
5055	/* create a snapshot object */
5056	ComObjPtr <Snapshot> snapshot;
5057	snapshot.createObject();
5058
5059	{
5060	/* required */
5061	Bstr name = aNode.stringValue ("name");
5062
5063	/* required */
5064	RTTIMESPEC timeStamp = aNode.value <RTTIMESPEC> ("timeStamp");
5065
5066	/* optional */
5067	Bstr description;
5068	{
5069	Key descNode = aNode.findKey ("Description");
5070	if (!descNode.isNull())
5071	description = descNode.keyStringValue();
5072	}
5073
5074	/* initialize the snapshot */
5075	rc = snapshot->init (uuid, name, description, timeStamp,
5076	snapshotMachine, aParentSnapshot);
5077	CheckComRCReturnRC (rc);
5078	}
5079
5080	/* memorize the first snapshot if necessary */
5081	if (!mData->mFirstSnapshot)
5082	mData->mFirstSnapshot = snapshot;
5083
5084	/* memorize the current snapshot when appropriate */
5085	if (!mData->mCurrentSnapshot && snapshot->data().mId == aCurSnapshotId)
5086	mData->mCurrentSnapshot = snapshot;
5087
5088	/* Snapshots node (optional) */
5089	{
5090	Key snapshotsNode = aNode.findKey ("Snapshots");
5091	if (!snapshotsNode.isNull())
5092	{
5093	Key::List children = snapshotsNode.keys ("Snapshot");
5094	for (Key::List::const_iterator it = children.begin();
5095	it != children.end(); ++ it)
5096	{
5097	rc = loadSnapshot ((*it), aCurSnapshotId, snapshot);
5098	CheckComRCBreakRC (rc);
5099	}
5100	}
5101	}
5102
5103	return rc;
5104	}
5105
5106	/**
5107	* @param aNode <Hardware> node.
5108	*/
5109	HRESULT Machine::loadHardware (const settings::Key &aNode)
5110	{
5111	using namespace settings;
5112
5113	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5114	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5115
5116	HRESULT rc = S_OK;
5117
5118	/* The hardware version attribute (optional). */
5119	mHWData->mHWVersion = aNode.stringValue ("version");
5120
5121	/* CPU node (currently not required) */
5122	{
5123	/* default value in case the node is not there */
5124	mHWData->mHWVirtExEnabled = TSBool_Default;
5125	mHWData->mHWVirtExNestedPagingEnabled = false;
5126	mHWData->mHWVirtExVPIDEnabled = false;
5127	mHWData->mPAEEnabled = false;
5128
5129	Key cpuNode = aNode.findKey ("CPU");
5130	if (!cpuNode.isNull())
5131	{
5132	Key hwVirtExNode = cpuNode.key ("HardwareVirtEx");
5133	if (!hwVirtExNode.isNull())
5134	{
5135	const char *enabled = hwVirtExNode.stringValue ("enabled");
5136	if (strcmp (enabled, "false") == 0)
5137	mHWData->mHWVirtExEnabled = TSBool_False;
5138	else if (strcmp (enabled, "true") == 0)
5139	mHWData->mHWVirtExEnabled = TSBool_True;
5140	else
5141	mHWData->mHWVirtExEnabled = TSBool_Default;
5142	}
5143	/* HardwareVirtExNestedPaging (optional, default is false) */
5144	Key HWVirtExNestedPagingNode = cpuNode.findKey ("HardwareVirtExNestedPaging");
5145	if (!HWVirtExNestedPagingNode.isNull())
5146	{
5147	mHWData->mHWVirtExNestedPagingEnabled = HWVirtExNestedPagingNode.value <bool> ("enabled");
5148	}
5149
5150	/* HardwareVirtExVPID (optional, default is false) */
5151	Key HWVirtExVPIDNode = cpuNode.findKey ("HardwareVirtExVPID");
5152	if (!HWVirtExVPIDNode.isNull())
5153	{
5154	mHWData->mHWVirtExVPIDEnabled = HWVirtExVPIDNode.value <bool> ("enabled");
5155	}
5156
5157	/* PAE (optional, default is false) */
5158	Key PAENode = cpuNode.findKey ("PAE");
5159	if (!PAENode.isNull())
5160	{
5161	mHWData->mPAEEnabled = PAENode.value <bool> ("enabled");
5162	}
5163
5164	/* CPUCount (optional, default is 1) */
5165	mHWData->mCPUCount = cpuNode.value <ULONG> ("count");
5166	}
5167	}
5168
5169	/* Memory node (required) */
5170	{
5171	Key memoryNode = aNode.key ("Memory");
5172
5173	mHWData->mMemorySize = memoryNode.value <ULONG> ("RAMSize");
5174	}
5175
5176	/* Boot node (required) */
5177	{
5178	/* reset all boot order positions to NoDevice */
5179	for (size_t i = 0; i < RT_ELEMENTS (mHWData->mBootOrder); i++)
5180	mHWData->mBootOrder [i] = DeviceType_Null;
5181
5182	Key bootNode = aNode.key ("Boot");
5183
5184	Key::List orderNodes = bootNode.keys ("Order");
5185	for (Key::List::const_iterator it = orderNodes.begin();
5186	it != orderNodes.end(); ++ it)
5187	{
5188	/* position (required) */
5189	/* position unicity is guaranteed by XML Schema */
5190	uint32_t position = (*it).value <uint32_t> ("position");
5191	-- position;
5192	Assert (position < RT_ELEMENTS (mHWData->mBootOrder));
5193
5194	/* device (required) */
5195	const char device = (it).stringValue ("device");
5196	if (strcmp (device, "None") == 0)
5197	mHWData->mBootOrder [position] = DeviceType_Null;
5198	else if (strcmp (device, "Floppy") == 0)
5199	mHWData->mBootOrder [position] = DeviceType_Floppy;
5200	else if (strcmp (device, "DVD") == 0)
5201	mHWData->mBootOrder [position] = DeviceType_DVD;
5202	else if (strcmp (device, "HardDisk") == 0)
5203	mHWData->mBootOrder [position] = DeviceType_HardDisk;
5204	else if (strcmp (device, "Network") == 0)
5205	mHWData->mBootOrder [position] = DeviceType_Network;
5206	else
5207	ComAssertMsgFailed (("Invalid device: %s", device));
5208	}
5209	}
5210
5211	/* Display node (required) */
5212	{
5213	Key displayNode = aNode.key ("Display");
5214
5215	mHWData->mVRAMSize = displayNode.value <ULONG> ("VRAMSize");
5216	mHWData->mMonitorCount = displayNode.value <ULONG> ("monitorCount");
5217	mHWData->mAccelerate3DEnabled = displayNode.value <bool> ("accelerate3D");
5218	}
5219
5220	#ifdef VBOX_WITH_VRDP
5221	/* RemoteDisplay */
5222	rc = mVRDPServer->loadSettings (aNode);
5223	CheckComRCReturnRC (rc);
5224	#endif
5225
5226	/* BIOS */
5227	rc = mBIOSSettings->loadSettings (aNode);
5228	CheckComRCReturnRC (rc);
5229
5230	/* DVD drive */
5231	rc = mDVDDrive->loadSettings (aNode);
5232	CheckComRCReturnRC (rc);
5233
5234	/* Floppy drive */
5235	rc = mFloppyDrive->loadSettings (aNode);
5236	CheckComRCReturnRC (rc);
5237
5238	/* USB Controller */
5239	rc = mUSBController->loadSettings (aNode);
5240	CheckComRCReturnRC (rc);
5241
5242	/* Network node (required) */
5243	{
5244	/* we assume that all network adapters are initially disabled
5245	* and detached */
5246
5247	Key networkNode = aNode.key ("Network");
5248
5249	rc = S_OK;
5250
5251	Key::List adapters = networkNode.keys ("Adapter");
5252	for (Key::List::const_iterator it = adapters.begin();
5253	it != adapters.end(); ++ it)
5254	{
5255	/* slot number (required) */
5256	/* slot unicity is guaranteed by XML Schema */
5257	uint32_t slot = (*it).value <uint32_t> ("slot");
5258	AssertBreak (slot < RT_ELEMENTS (mNetworkAdapters));
5259
5260	rc = mNetworkAdapters [slot]->loadSettings (*it);
5261	CheckComRCReturnRC (rc);
5262	}
5263	}
5264
5265	/* Serial node (required) */
5266	{
5267	Key serialNode = aNode.key ("UART");
5268
5269	rc = S_OK;
5270
5271	Key::List ports = serialNode.keys ("Port");
5272	for (Key::List::const_iterator it = ports.begin();
5273	it != ports.end(); ++ it)
5274	{
5275	/* slot number (required) */
5276	/* slot unicity is guaranteed by XML Schema */
5277	uint32_t slot = (*it).value <uint32_t> ("slot");
5278	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5279
5280	rc = mSerialPorts [slot]->loadSettings (*it);
5281	CheckComRCReturnRC (rc);
5282	}
5283	}
5284
5285	/* Parallel node (optional) */
5286	{
5287	Key parallelNode = aNode.key ("LPT");
5288
5289	rc = S_OK;
5290
5291	Key::List ports = parallelNode.keys ("Port");
5292	for (Key::List::const_iterator it = ports.begin();
5293	it != ports.end(); ++ it)
5294	{
5295	/* slot number (required) */
5296	/* slot unicity is guaranteed by XML Schema */
5297	uint32_t slot = (*it).value <uint32_t> ("slot");
5298	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5299
5300	rc = mParallelPorts [slot]->loadSettings (*it);
5301	CheckComRCReturnRC (rc);
5302	}
5303	}
5304
5305	/* AudioAdapter */
5306	rc = mAudioAdapter->loadSettings (aNode);
5307	CheckComRCReturnRC (rc);
5308
5309	/* Shared folders (required) */
5310	{
5311	Key sharedFoldersNode = aNode.key ("SharedFolders");
5312
5313	rc = S_OK;
5314
5315	Key::List folders = sharedFoldersNode.keys ("SharedFolder");
5316	for (Key::List::const_iterator it = folders.begin();
5317	it != folders.end(); ++ it)
5318	{
5319	/* folder logical name (required) */
5320	Bstr name = (*it).stringValue ("name");
5321	/* folder host path (required) */
5322	Bstr hostPath = (*it).stringValue ("hostPath");
5323
5324	bool writable = (*it).value <bool> ("writable");
5325
5326	rc = CreateSharedFolder (name, hostPath, writable);
5327	CheckComRCReturnRC (rc);
5328	}
5329	}
5330
5331	/* Clipboard node (required) */
5332	{
5333	Key clipNode = aNode.key ("Clipboard");
5334
5335	const char *mode = clipNode.stringValue ("mode");
5336	if (strcmp (mode, "Disabled") == 0)
5337	mHWData->mClipboardMode = ClipboardMode_Disabled;
5338	else if (strcmp (mode, "HostToGuest") == 0)
5339	mHWData->mClipboardMode = ClipboardMode_HostToGuest;
5340	else if (strcmp (mode, "GuestToHost") == 0)
5341	mHWData->mClipboardMode = ClipboardMode_GuestToHost;
5342	else if (strcmp (mode, "Bidirectional") == 0)
5343	mHWData->mClipboardMode = ClipboardMode_Bidirectional;
5344	else
5345	AssertMsgFailed (("Invalid clipboard mode '%s'\n", mode));
5346	}
5347
5348	/* Guest node (required) */
5349	{
5350	Key guestNode = aNode.key ("Guest");
5351
5352	/* optional, defaults to 0 */
5353	mHWData->mMemoryBalloonSize =
5354	guestNode.value <ULONG> ("memoryBalloonSize");
5355	/* optional, defaults to 0 */
5356	mHWData->mStatisticsUpdateInterval =
5357	guestNode.value <ULONG> ("statisticsUpdateInterval");
5358	}
5359
5360	#ifdef VBOX_WITH_GUEST_PROPS
5361	/* Guest properties (optional) */
5362	{
5363	using namespace guestProp;
5364
5365	Key guestPropertiesNode = aNode.findKey ("GuestProperties");
5366	Bstr notificationPatterns (""); /* We catch allocation failure below. */
5367	if (!guestPropertiesNode.isNull())
5368	{
5369	Key::List properties = guestPropertiesNode.keys ("GuestProperty");
5370	for (Key::List::const_iterator it = properties.begin();
5371	it != properties.end(); ++ it)
5372	{
5373	uint32_t fFlags = NILFLAG;
5374
5375	/* property name (required) */
5376	Bstr name = (*it).stringValue ("name");
5377	/* property value (required) */
5378	Bstr value = (*it).stringValue ("value");
5379	/* property timestamp (optional, defaults to 0) */
5380	ULONG64 timestamp = (*it).value<ULONG64> ("timestamp");
5381	/* property flags (optional, defaults to empty) */
5382	Bstr flags = (*it).stringValue ("flags");
5383	Utf8Str utf8Flags (flags);
5384	if (utf8Flags.isNull ())
5385	return E_OUTOFMEMORY;
5386	validateFlags (utf8Flags.raw(), &fFlags);
5387	HWData::GuestProperty property = { name, value, timestamp, fFlags };
5388	mHWData->mGuestProperties.push_back (property);
5389	/* This is just sanity, as the push_back() will probably have thrown
5390	* an exception if we are out of memory. Note that if we run out
5391	* allocating the Bstrs above, this will be caught here as well. */
5392	if ( mHWData->mGuestProperties.back().mName.isNull ()
5393	\|\| mHWData->mGuestProperties.back().mValue.isNull ()
5394	)
5395	return E_OUTOFMEMORY;
5396	}
5397	notificationPatterns = guestPropertiesNode.stringValue ("notificationPatterns");
5398	}
5399	mHWData->mPropertyServiceActive = false;
5400	mHWData->mGuestPropertyNotificationPatterns = notificationPatterns;
5401	if (mHWData->mGuestPropertyNotificationPatterns.isNull ())
5402	return E_OUTOFMEMORY;
5403	}
5404	#endif /* VBOX_WITH_GUEST_PROPS defined */
5405
5406	AssertComRC (rc);
5407	return rc;
5408	}
5409
5410	/**
5411	* @param aNode <StorageControllers> node.
5412	*/
5413	HRESULT Machine::loadStorageControllers (const settings::Key &aNode, bool aRegistered,
5414	const Guid aSnapshotId / = NULL */)
5415	{
5416	using namespace settings;
5417
5418	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5419	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5420
5421	HRESULT rc = S_OK;
5422
5423	Key::List children = aNode.keys ("StorageController");
5424
5425	/* Make sure the attached hard disks don't get unregistered until we
5426	* associate them with tis machine (important for VMs loaded (opened) after
5427	* VirtualBox startup) */
5428	AutoReadLock vboxLock (mParent);
5429
5430	for (Key::List::const_iterator it = children.begin();
5431	it != children.end(); ++ it)
5432	{
5433	Bstr controllerName = (*it).stringValue ("name");
5434	const char controllerType = (it).stringValue ("type");
5435	ULONG portCount = (*it).value <ULONG> ("PortCount");
5436	StorageControllerType_T controller;
5437	StorageBus_T connection;
5438
5439	if (strcmp (controllerType, "AHCI") == 0)
5440	{
5441	connection = StorageBus_SATA;
5442	controller = StorageControllerType_IntelAhci;
5443	}
5444	else if (strcmp (controllerType, "LsiLogic") == 0)
5445	{
5446	connection = StorageBus_SCSI;
5447	controller = StorageControllerType_LsiLogic;
5448	}
5449	else if (strcmp (controllerType, "BusLogic") == 0)
5450	{
5451	connection = StorageBus_SCSI;
5452	controller = StorageControllerType_BusLogic;
5453	}
5454	else if (strcmp (controllerType, "PIIX3") == 0)
5455	{
5456	connection = StorageBus_IDE;
5457	controller = StorageControllerType_PIIX3;
5458	}
5459	else if (strcmp (controllerType, "PIIX4") == 0)
5460	{
5461	connection = StorageBus_IDE;
5462	controller = StorageControllerType_PIIX4;
5463	}
5464	else if (strcmp (controllerType, "ICH6") == 0)
5465	{
5466	connection = StorageBus_IDE;
5467	controller = StorageControllerType_ICH6;
5468	}
5469	else
5470	AssertFailedReturn (E_FAIL);
5471
5472	ComObjPtr<StorageController> ctl;
5473	/* Try to find one with the name first. */
5474	rc = getStorageControllerByName (controllerName, ctl, false /* aSetError */);
5475	if (SUCCEEDED (rc))
5476	return setError (VBOX_E_OBJECT_IN_USE,
5477	tr ("Storage controller named '%ls' already exists"), controllerName.raw());
5478
5479	ctl.createObject();
5480	rc = ctl->init (this, controllerName, connection);
5481	CheckComRCReturnRC (rc);
5482
5483	mStorageControllers->push_back (ctl);
5484
5485	rc = ctl->COMSETTER(ControllerType)(controller);
5486	CheckComRCReturnRC(rc);
5487
5488	rc = ctl->COMSETTER(PortCount)(portCount);
5489	CheckComRCReturnRC(rc);
5490
5491	/* Set IDE emulation settings (only for AHCI controller). */
5492	if (controller == StorageControllerType_IntelAhci)
5493	{
5494	ULONG val;
5495
5496	/* ide emulation settings (optional, default to 0,1,2,3 respectively) */
5497	val = (*it).valueOr <ULONG> ("IDE0MasterEmulationPort", 0);
5498	rc = ctl->SetIDEEmulationPort(0, val);
5499	CheckComRCReturnRC(rc);
5500	val = (*it).valueOr <ULONG> ("IDE0SlaveEmulationPort", 1);
5501	rc = ctl->SetIDEEmulationPort(1, val);
5502	CheckComRCReturnRC(rc);
5503	val = (*it).valueOr <ULONG> ("IDE1MasterEmulationPort", 2);
5504	rc = ctl->SetIDEEmulationPort(2, val);
5505	CheckComRCReturnRC(rc);
5506	val = (*it).valueOr <ULONG> ("IDE1SlaveEmulationPort", 3);
5507	rc = ctl->SetIDEEmulationPort(3, val);
5508	CheckComRCReturnRC(rc);
5509	}
5510
5511	/* Load the attached devices now. */
5512	rc = loadStorageDevices(ctl, (*it),
5513	aRegistered, aSnapshotId);
5514	CheckComRCReturnRC(rc);
5515	}
5516
5517	return S_OK;
5518	}
5519
5520	/**
5521	* @param aNode <HardDiskAttachments> node.
5522	* @param aRegistered true when the machine is being loaded on VirtualBox
5523	* startup, or when a snapshot is being loaded (wchich
5524	* currently can happen on startup only)
5525	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
5526	*
5527	* @note Lock mParent for reading and hard disks for writing before calling.
5528	*/
5529	HRESULT Machine::loadStorageDevices (ComObjPtr<StorageController> aStorageController,
5530	const settings::Key &aNode, bool aRegistered,
5531	const Guid aSnapshotId / = NULL */)
5532	{
5533	using namespace settings;
5534
5535	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5536	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
5537	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
5538
5539	HRESULT rc = S_OK;
5540
5541	Key::List children = aNode.keys ("AttachedDevice");
5542
5543	if (!aRegistered && children.size() > 0)
5544	{
5545	/* when the machine is being loaded (opened) from a file, it cannot
5546	* have hard disks attached (this should not happen normally,
5547	* because we don't allow to attach hard disks to an unregistered
5548	* VM at all */
5549	return setError (E_FAIL,
5550	tr ("Unregistered machine '%ls' cannot have hard disks attached "
5551	"(found %d hard disk attachments)"),
5552	mUserData->mName.raw(), children.size());
5553	}
5554
5555	for (Key::List::const_iterator it = children.begin();
5556	it != children.end(); ++ it)
5557	{
5558	Key idKey = (*it).key ("Image");
5559	/* hard disk uuid (required) */
5560	Guid uuid = idKey.value <Guid> ("uuid");
5561	/* device type (required) */
5562	const char deviceType = (it).stringValue ("type");
5563	/* channel (required) */
5564	LONG port = (*it).value <LONG> ("port");
5565	/* device (required) */
5566	LONG device = (*it).value <LONG> ("device");
5567
5568	/* We support only hard disk types at the moment.
5569	* @todo: Implement support for CD/DVD drives.
5570	*/
5571	if (strcmp(deviceType, "HardDisk") != 0)
5572	return setError (E_FAIL,
5573	tr ("Device at position %lu:%lu is not a hard disk: %s"),
5574	port, device, deviceType);
5575
5576	/* find a hard disk by UUID */
5577	ComObjPtr<HardDisk> hd;
5578	rc = mParent->findHardDisk(&uuid, NULL, true /* aDoSetError */, &hd);
5579	CheckComRCReturnRC (rc);
5580
5581	AutoWriteLock hdLock (hd);
5582
5583	if (hd->type() == HardDiskType_Immutable)
5584	{
5585	if (mType == IsSnapshotMachine)
5586	return setError (E_FAIL,
5587	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5588	"directly attached to snapshot with UUID {%RTuuid} "
5589	"of the virtual machine '%ls' ('%ls')"),
5590	hd->locationFull().raw(), uuid.raw(),
5591	aSnapshotId->raw(),
5592	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5593
5594	return setError (E_FAIL,
5595	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5596	"directly attached to the virtual machine '%ls' ('%ls')"),
5597	hd->locationFull().raw(), uuid.raw(),
5598	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5599	}
5600
5601	if (mType != IsSnapshotMachine && hd->children().size() != 0)
5602	return setError (E_FAIL,
5603	tr ("Hard disk '%ls' with UUID {%RTuuid} cannot be directly "
5604	"attached to the virtual machine '%ls' ('%ls') "
5605	"because it has %d differencing child hard disks"),
5606	hd->locationFull().raw(), uuid.raw(),
5607	mUserData->mName.raw(), mData->mConfigFileFull.raw(),
5608	hd->children().size());
5609
5610	if (std::find_if (mHDData->mAttachments.begin(),
5611	mHDData->mAttachments.end(),
5612	HardDiskAttachment::RefersTo (hd)) !=
5613	mHDData->mAttachments.end())
5614	{
5615	return setError (E_FAIL,
5616	tr ("Hard disk '%ls' with UUID {%RTuuid} is already attached "
5617	"to the virtual machine '%ls' ('%ls')"),
5618	hd->locationFull().raw(), uuid.raw(),
5619	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5620	}
5621
5622	const Bstr controllerName = aStorageController->name();
5623	ComObjPtr<HardDiskAttachment> attachment;
5624	attachment.createObject();
5625	rc = attachment->init (hd, controllerName, port, device);
5626	CheckComRCBreakRC (rc);
5627
5628	/* associate the hard disk with this machine and snapshot */
5629	if (mType == IsSnapshotMachine)
5630	rc = hd->attachTo (mData->mUuid, *aSnapshotId);
5631	else
5632	rc = hd->attachTo (mData->mUuid);
5633
5634	AssertComRCBreakRC (rc);
5635
5636	/* backup mHDData to let registeredInit() properly rollback on failure
5637	* (= limited accessibility) */
5638
5639	mHDData.backup();
5640	mHDData->mAttachments.push_back (attachment);
5641	}
5642
5643	return rc;
5644	}
5645
5646	/**
5647	* Searches for a <Snapshot> node for the given snapshot.
5648	* If the search is successful, \a aSnapshotNode will contain the found node.
5649	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
5650	* direct child of \a aMachineNode.
5651	*
5652	* If the search fails, a failure is returned and both \a aSnapshotsNode and
5653	* \a aSnapshotNode are set to 0.
5654	*
5655	* @param aSnapshot Snapshot to search for.
5656	* @param aMachineNode <Machine> node to start from.
5657	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
5658	* (may be NULL if the caller is not interested).
5659	* @param aSnapshotNode Found <Snapshot> node.
5660	*/
5661	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, settings::Key &aMachineNode,
5662	settings::Key *aSnapshotsNode,
5663	settings::Key *aSnapshotNode)
5664	{
5665	using namespace settings;
5666
5667	AssertReturn (aSnapshot && !aMachineNode.isNull()
5668	&& aSnapshotNode != NULL, E_FAIL);
5669
5670	if (aSnapshotsNode)
5671	aSnapshotsNode->setNull();
5672	aSnapshotNode->setNull();
5673
5674	// build the full uuid path (from the top parent to the given snapshot)
5675	std::list <Guid> path;
5676	{
5677	ComObjPtr <Snapshot> parent = aSnapshot;
5678	while (parent)
5679	{
5680	path.push_front (parent->data().mId);
5681	parent = parent->parent();
5682	}
5683	}
5684
5685	Key snapshotsNode = aMachineNode;
5686	Key snapshotNode;
5687
5688	for (std::list <Guid>::const_iterator it = path.begin();
5689	it != path.end();
5690	++ it)
5691	{
5692	if (!snapshotNode.isNull())
5693	{
5694	/* proceed to the nested <Snapshots> node */
5695	snapshotsNode = snapshotNode.key ("Snapshots");
5696	snapshotNode.setNull();
5697	}
5698
5699	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5700
5701	Key::List children = snapshotsNode.keys ("Snapshot");
5702	for (Key::List::const_iterator ch = children.begin();
5703	ch != children.end();
5704	++ ch)
5705	{
5706	Guid id = (*ch).value <Guid> ("uuid");
5707	if (id == (*it))
5708	{
5709	/* pass over to the outer loop */
5710	snapshotNode = *ch;
5711	break;
5712	}
5713	}
5714
5715	if (!snapshotNode.isNull())
5716	continue;
5717
5718	/* the next uuid is not found, no need to continue... */
5719	AssertFailedBreak();
5720	}
5721
5722	// we must always succesfully find the node
5723	AssertReturn (!snapshotNode.isNull(), E_FAIL);
5724	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5725
5726	if (aSnapshotsNode && (snapshotsNode != aMachineNode))
5727	*aSnapshotsNode = snapshotsNode;
5728	*aSnapshotNode = snapshotNode;
5729
5730	return S_OK;
5731	}
5732
5733	/**
5734	* Returns the snapshot with the given UUID or fails of no such snapshot.
5735	*
5736	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5737	* @param aSnapshot where to return the found snapshot
5738	* @param aSetError true to set extended error info on failure
5739	*/
5740	HRESULT Machine::findSnapshot (const Guid &aId, ComObjPtr <Snapshot> &aSnapshot,
5741	bool aSetError /* = false */)
5742	{
5743	if (!mData->mFirstSnapshot)
5744	{
5745	if (aSetError)
5746	return setError (E_FAIL,
5747	tr ("This machine does not have any snapshots"));
5748	return E_FAIL;
5749	}
5750
5751	if (aId.isEmpty())
5752	aSnapshot = mData->mFirstSnapshot;
5753	else
5754	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
5755
5756	if (!aSnapshot)
5757	{
5758	if (aSetError)
5759	return setError (E_FAIL,
5760	tr ("Could not find a snapshot with UUID {%s}"),
5761	aId.toString().raw());
5762	return E_FAIL;
5763	}
5764
5765	return S_OK;
5766	}
5767
5768	/**
5769	* Returns the snapshot with the given name or fails of no such snapshot.
5770	*
5771	* @param aName snapshot name to find
5772	* @param aSnapshot where to return the found snapshot
5773	* @param aSetError true to set extended error info on failure
5774	*/
5775	HRESULT Machine::findSnapshot (IN_BSTR aName, ComObjPtr <Snapshot> &aSnapshot,
5776	bool aSetError /* = false */)
5777	{
5778	AssertReturn (aName, E_INVALIDARG);
5779
5780	if (!mData->mFirstSnapshot)
5781	{
5782	if (aSetError)
5783	return setError (VBOX_E_OBJECT_NOT_FOUND,
5784	tr ("This machine does not have any snapshots"));
5785	return VBOX_E_OBJECT_NOT_FOUND;
5786	}
5787
5788	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5789
5790	if (!aSnapshot)
5791	{
5792	if (aSetError)
5793	return setError (VBOX_E_OBJECT_NOT_FOUND,
5794	tr ("Could not find a snapshot named '%ls'"), aName);
5795	return VBOX_E_OBJECT_NOT_FOUND;
5796	}
5797
5798	return S_OK;
5799	}
5800
5801	/**
5802	* Returns a storage controller object with the given name.
5803	*
5804	* @param aName storage controller name to find
5805	* @param aStorageController where to return the found storage controller
5806	* @param aSetError true to set extended error info on failure
5807	*/
5808	HRESULT Machine::getStorageControllerByName(CBSTR aName,
5809	ComObjPtr <StorageController> &aStorageController,
5810	bool aSetError /* = false */)
5811	{
5812	AssertReturn (aName, E_INVALIDARG);
5813
5814	for (StorageControllerList::const_iterator it =
5815	mStorageControllers->begin();
5816	it != mStorageControllers->end();
5817	++ it)
5818	{
5819	if ((*it)->name() == aName)
5820	{
5821	aStorageController = (*it);
5822	return S_OK;
5823	}
5824	}
5825
5826	if (aSetError)
5827	return setError (VBOX_E_OBJECT_NOT_FOUND,
5828	tr ("Could not find a storage controller named '%ls'"), aName);
5829	return VBOX_E_OBJECT_NOT_FOUND;
5830	}
5831
5832	HRESULT Machine::getHardDiskAttachmentsOfController(CBSTR aName,
5833	HDData::AttachmentList &atts)
5834	{
5835	AutoCaller autoCaller (this);
5836	CheckComRCReturnRC(autoCaller.rc());
5837
5838	AutoReadLock alock(this);
5839
5840	for (HDData::AttachmentList::iterator it = mHDData->mAttachments.begin();
5841	it != mHDData->mAttachments.end(); ++it)
5842	{
5843	if ((*it)->controller() == aName)
5844	atts.push_back(*it);
5845	}
5846
5847	return S_OK;
5848	}
5849
5850	/**
5851	* Helper for #saveSettings. Cares about renaming the settings directory and
5852	* file if the machine name was changed and about creating a new settings file
5853	* if this is a new machine.
5854	*
5855	* @note Must be never called directly but only from #saveSettings().
5856	*
5857	* @param aRenamed receives \|true\| if the name was changed and the settings
5858	* file was renamed as a result, or \|false\| otherwise. The
5859	* value makes sense only on success.
5860	* @param aNew receives \|true\| if a virgin settings file was created.
5861	*/
5862	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
5863	{
5864	/* Note: tecnhically, mParent needs to be locked only when the machine is
5865	* registered (see prepareSaveSettings() for details) but we don't
5866	* currently differentiate it in callers of saveSettings() so we don't
5867	* make difference here too. */
5868	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
5869	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
5870
5871	HRESULT rc = S_OK;
5872
5873	aRenamed = false;
5874
5875	/* if we're ready and isConfigLocked() is FALSE then it means
5876	* that no config file exists yet (we will create a virgin one) */
5877	aNew = !isConfigLocked();
5878
5879	/* attempt to rename the settings file if machine name is changed */
5880	if (mUserData->mNameSync &&
5881	mUserData.isBackedUp() &&
5882	mUserData.backedUpData()->mName != mUserData->mName)
5883	{
5884	aRenamed = true;
5885
5886	if (!aNew)
5887	{
5888	/* unlock the old config file */
5889	rc = unlockConfig();
5890	CheckComRCReturnRC (rc);
5891	}
5892
5893	bool dirRenamed = false;
5894	bool fileRenamed = false;
5895
5896	Utf8Str configFile, newConfigFile;
5897	Utf8Str configDir, newConfigDir;
5898
5899	do
5900	{
5901	int vrc = VINF_SUCCESS;
5902
5903	Utf8Str name = mUserData.backedUpData()->mName;
5904	Utf8Str newName = mUserData->mName;
5905
5906	configFile = mData->mConfigFileFull;
5907
5908	/* first, rename the directory if it matches the machine name */
5909	configDir = configFile;
5910	RTPathStripFilename (configDir.mutableRaw());
5911	newConfigDir = configDir;
5912	if (RTPathFilename (configDir) == name)
5913	{
5914	RTPathStripFilename (newConfigDir.mutableRaw());
5915	newConfigDir = Utf8StrFmt ("%s%c%s",
5916	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5917	/* new dir and old dir cannot be equal here because of 'if'
5918	* above and because name != newName */
5919	Assert (configDir != newConfigDir);
5920	if (!aNew)
5921	{
5922	/* perform real rename only if the machine is not new */
5923	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5924	if (RT_FAILURE (vrc))
5925	{
5926	rc = setError (E_FAIL,
5927	tr ("Could not rename the directory '%s' to '%s' "
5928	"to save the settings file (%Rrc)"),
5929	configDir.raw(), newConfigDir.raw(), vrc);
5930	break;
5931	}
5932	dirRenamed = true;
5933	}
5934	}
5935
5936	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
5937	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5938
5939	/* then try to rename the settings file itself */
5940	if (newConfigFile != configFile)
5941	{
5942	/* get the path to old settings file in renamed directory */
5943	configFile = Utf8StrFmt ("%s%c%s",
5944	newConfigDir.raw(), RTPATH_DELIMITER,
5945	RTPathFilename (configFile));
5946	if (!aNew)
5947	{
5948	/* perform real rename only if the machine is not new */
5949	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
5950	if (RT_FAILURE (vrc))
5951	{
5952	rc = setError (E_FAIL,
5953	tr ("Could not rename the settings file '%s' to '%s' "
5954	"(%Rrc)"),
5955	configFile.raw(), newConfigFile.raw(), vrc);
5956	break;
5957	}
5958	fileRenamed = true;
5959	}
5960	}
5961
5962	/* update mConfigFileFull amd mConfigFile */
5963	Bstr oldConfigFileFull = mData->mConfigFileFull;
5964	Bstr oldConfigFile = mData->mConfigFile;
5965	mData->mConfigFileFull = newConfigFile;
5966	/* try to get the relative path for mConfigFile */
5967	Utf8Str path = newConfigFile;
5968	mParent->calculateRelativePath (path, path);
5969	mData->mConfigFile = path;
5970
5971	/* last, try to update the global settings with the new path */
5972	if (mData->mRegistered)
5973	{
5974	rc = mParent->updateSettings (configDir, newConfigDir);
5975	if (FAILED (rc))
5976	{
5977	/* revert to old values */
5978	mData->mConfigFileFull = oldConfigFileFull;
5979	mData->mConfigFile = oldConfigFile;
5980	break;
5981	}
5982	}
5983
5984	/* update the snapshot folder */
5985	path = mUserData->mSnapshotFolderFull;
5986	if (RTPathStartsWith (path, configDir))
5987	{
5988	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
5989	path.raw() + configDir.length());
5990	mUserData->mSnapshotFolderFull = path;
5991	calculateRelativePath (path, path);
5992	mUserData->mSnapshotFolder = path;
5993	}
5994
5995	/* update the saved state file path */
5996	path = mSSData->mStateFilePath;
5997	if (RTPathStartsWith (path, configDir))
5998	{
5999	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
6000	path.raw() + configDir.length());
6001	mSSData->mStateFilePath = path;
6002	}
6003
6004	/* Update saved state file paths of all online snapshots.
6005	* Note that saveSettings() will recognize name change
6006	* and will save all snapshots in this case. */
6007	if (mData->mFirstSnapshot)
6008	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
6009	newConfigDir);
6010	}
6011	while (0);
6012
6013	if (FAILED (rc))
6014	{
6015	/* silently try to rename everything back */
6016	if (fileRenamed)
6017	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
6018	if (dirRenamed)
6019	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
6020	}
6021
6022	if (!aNew)
6023	{
6024	/* lock the config again */
6025	HRESULT rc2 = lockConfig();
6026	if (SUCCEEDED (rc))
6027	rc = rc2;
6028	}
6029
6030	CheckComRCReturnRC (rc);
6031	}
6032
6033	if (aNew)
6034	{
6035	/* create a virgin config file */
6036	int vrc = VINF_SUCCESS;
6037
6038	/* ensure the settings directory exists */
6039	Utf8Str path = mData->mConfigFileFull;
6040	RTPathStripFilename (path.mutableRaw());
6041	if (!RTDirExists (path))
6042	{
6043	vrc = RTDirCreateFullPath (path, 0777);
6044	if (RT_FAILURE (vrc))
6045	{
6046	return setError (E_FAIL,
6047	tr ("Could not create a directory '%s' "
6048	"to save the settings file (%Rrc)"),
6049	path.raw(), vrc);
6050	}
6051	}
6052
6053	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
6054	path = Utf8Str (mData->mConfigFileFull);
6055	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
6056	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
6057	RTFILE_O_DENY_WRITE);
6058	if (RT_SUCCESS (vrc))
6059	{
6060	vrc = RTFileWrite (mData->mHandleCfgFile,
6061	(void *) gDefaultMachineConfig,
6062	strlen (gDefaultMachineConfig), NULL);
6063	}
6064	if (RT_FAILURE (vrc))
6065	{
6066	mData->mHandleCfgFile = NIL_RTFILE;
6067	return setError (E_FAIL,
6068	tr ("Could not create the settings file '%s' (%Rrc)"),
6069	path.raw(), vrc);
6070	}
6071	/* we do not close the file to simulate lockConfig() */
6072	}
6073
6074	return rc;
6075	}
6076
6077	/**
6078	* Saves and commits machine data, user data and hardware data.
6079	*
6080	* Note that on failure, the data remains uncommitted.
6081	*
6082	* @a aFlags may combine the following flags:
6083	*
6084	* - SaveS_ResetCurStateModified: Resets mData->mCurrentStateModified to FALSE.
6085	* Used when saving settings after an operation that makes them 100%
6086	* correspond to the settings from the current snapshot.
6087	* - SaveS_InformCallbacksAnyway: Callbacks will be informed even if
6088	* #isReallyModified() returns false. This is necessary for cases when we
6089	* change machine data diectly, not through the backup()/commit() mechanism.
6090	*
6091	* @note Must be called from under mParent write lock (sometimes needed by
6092	* #prepareSaveSettings()) and this object's write lock. Locks children for
6093	* writing. There is one exception when mParent is unused and therefore may be
6094	* left unlocked: if this machine is an unregistered one.
6095	*/
6096	HRESULT Machine::saveSettings (int aFlags /= 0/)
6097	{
6098	LogFlowThisFuncEnter();
6099
6100	/* Note: tecnhically, mParent needs to be locked only when the machine is
6101	* registered (see prepareSaveSettings() for details) but we don't
6102	* currently differentiate it in callers of saveSettings() so we don't
6103	* make difference here too. */
6104	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
6105	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
6106
6107	/* make sure child objects are unable to modify the settings while we are
6108	* saving them */
6109	ensureNoStateDependencies();
6110
6111	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6112
6113	BOOL currentStateModified = mData->mCurrentStateModified;
6114	bool settingsModified;
6115
6116	if (!(aFlags & SaveS_ResetCurStateModified) && !currentStateModified)
6117	{
6118	/* We ignore changes to user data when setting mCurrentStateModified
6119	* because the current state will not differ from the current snapshot
6120	* if only user data has been changed (user data is shared by all
6121	* snapshots). */
6122	currentStateModified = isReallyModified (true /* aIgnoreUserData */);
6123	settingsModified = mUserData.hasActualChanges() \|\| currentStateModified;
6124	}
6125	else
6126	{
6127	if (aFlags & SaveS_ResetCurStateModified)
6128	currentStateModified = FALSE;
6129	settingsModified = isReallyModified();
6130	}
6131
6132	HRESULT rc = S_OK;
6133
6134	/* First, prepare to save settings. It will care about renaming the
6135	* settings directory and file if the machine name was changed and about
6136	* creating a new settings file if this is a new machine. */
6137	bool isRenamed = false;
6138	bool isNew = false;
6139	rc = prepareSaveSettings (isRenamed, isNew);
6140	CheckComRCReturnRC (rc);
6141
6142	try
6143	{
6144	using namespace settings;
6145	using namespace xml;
6146
6147	/* this object is locked for writing to prevent concurrent reads and writes */
6148	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6149	XmlTreeBackend tree;
6150
6151	/* The newly created settings file is incomplete therefore we turn off
6152	* validation. The rest is like in loadSettingsTree_ForUpdate().*/
6153	rc = VirtualBox::loadSettingsTree (tree, file,
6154	!isNew /* aValidate */,
6155	false /* aCatchLoadErrors */,
6156	false /* aAddDefaults */);
6157	CheckComRCThrowRC (rc);
6158
6159	Key machineNode = tree.rootKey().createKey ("Machine");
6160
6161	/* uuid (required) */
6162	Assert (!mData->mUuid.isEmpty());
6163	machineNode.setValue <Guid> ("uuid", mData->mUuid);
6164
6165	/* name (required) */
6166	Assert (!mUserData->mName.isEmpty());
6167	machineNode.setValue <Bstr> ("name", mUserData->mName);
6168
6169	/* nameSync (optional, default is true) */
6170	machineNode.setValueOr <bool> ("nameSync", !!mUserData->mNameSync, true);
6171
6172	/* Description node (optional) */
6173	if (!mUserData->mDescription.isNull())
6174	{
6175	Key descNode = machineNode.createKey ("Description");
6176	descNode.setKeyValue <Bstr> (mUserData->mDescription);
6177	}
6178	else
6179	{
6180	Key descNode = machineNode.findKey ("Description");
6181	if (!descNode.isNull())
6182	descNode.zap();
6183	}
6184
6185	/* OSType (required) */
6186	machineNode.setValue <Bstr> ("OSType", mUserData->mOSTypeId);
6187
6188	/* stateFile (optional) */
6189	/// @todo The reason for MachineState_Restoring below:
6190	/// PushGuestProperties() is always called from Console::powerDown()
6191	/// (including the case when restoring from the saved state fails) and
6192	/// calls SaveSettings() to save guest properties. Since the saved state
6193	/// file is still present there (and should be kept), we must save it
6194	/// while in Restoring state too. However, calling SaveSettings() from
6195	/// PushGuestProperties() is wrong in the first place. A proper way is
6196	/// to only save guest properties node and not involve the whole save
6197	/// process.
6198	if (mData->mMachineState == MachineState_Saved \|\|
6199	mData->mMachineState == MachineState_Restoring)
6200	{
6201	Assert (!mSSData->mStateFilePath.isEmpty());
6202	/* try to make the file name relative to the settings file dir */
6203	Utf8Str stateFilePath = mSSData->mStateFilePath;
6204	calculateRelativePath (stateFilePath, stateFilePath);
6205	machineNode.setStringValue ("stateFile", stateFilePath);
6206	}
6207	else
6208	{
6209	Assert (mSSData->mStateFilePath.isNull());
6210	machineNode.zapValue ("stateFile");
6211	}
6212
6213	/* currentSnapshot ID (optional) */
6214	if (!mData->mCurrentSnapshot.isNull())
6215	{
6216	Assert (!mData->mFirstSnapshot.isNull());
6217	machineNode.setValue <Guid> ("currentSnapshot",
6218	mData->mCurrentSnapshot->data().mId);
6219	}
6220	else
6221	{
6222	Assert (mData->mFirstSnapshot.isNull());
6223	machineNode.zapValue ("currentSnapshot");
6224	}
6225
6226	/* snapshotFolder (optional) */
6227	/// @todo use the Bstr::NullOrEmpty constant and setValueOr
6228	if (!mUserData->mSnapshotFolder.isEmpty())
6229	machineNode.setValue <Bstr> ("snapshotFolder", mUserData->mSnapshotFolder);
6230	else
6231	machineNode.zapValue ("snapshotFolder");
6232
6233	/* currentStateModified (optional, default is true) */
6234	machineNode.setValueOr <bool> ("currentStateModified",
6235	!!currentStateModified, true);
6236
6237	/* lastStateChange */
6238	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
6239	mData->mLastStateChange);
6240
6241	/* set the aborted attribute when appropriate, defaults to false */
6242	machineNode.setValueOr <bool> ("aborted",
6243	mData->mMachineState == MachineState_Aborted,
6244	false);
6245
6246	/* Hardware node (required) */
6247	{
6248	/* first, delete the entire node if exists */
6249	Key hwNode = machineNode.findKey ("Hardware");
6250	if (!hwNode.isNull())
6251	hwNode.zap();
6252	/* then recreate it */
6253	hwNode = machineNode.createKey ("Hardware");
6254
6255	rc = saveHardware (hwNode);
6256	CheckComRCThrowRC (rc);
6257	}
6258
6259	/* StorageControllers node (required) */
6260	{
6261	/* first, delete the entire node if exists */
6262	Key storageNode = machineNode.findKey ("StorageControllers");
6263	if (!storageNode.isNull())
6264	storageNode.zap();
6265	/* then recreate it */
6266	storageNode = machineNode.createKey ("StorageControllers");
6267
6268	rc = saveStorageControllers (storageNode);
6269	CheckComRCThrowRC (rc);
6270	}
6271
6272	/* ask to save all snapshots when the machine name was changed since
6273	* it may affect saved state file paths for online snapshots (see
6274	* #openConfigLoader() for details) */
6275	if (isRenamed)
6276	{
6277	rc = saveSnapshotSettingsWorker (machineNode, NULL,
6278	SaveSS_UpdateAllOp);
6279	CheckComRCThrowRC (rc);
6280	}
6281
6282	/* save the settings on success */
6283	rc = VirtualBox::saveSettingsTree (tree, file,
6284	mData->mSettingsFileVersion);
6285	CheckComRCThrowRC (rc);
6286	}
6287	catch (HRESULT err)
6288	{
6289	/* we assume that error info is set by the thrower */
6290	rc = err;
6291	}
6292	catch (...)
6293	{
6294	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6295	}
6296
6297	if (SUCCEEDED (rc))
6298	{
6299	commit();
6300
6301	/* memorize the new modified state */
6302	mData->mCurrentStateModified = currentStateModified;
6303	}
6304
6305	if (settingsModified \|\| (aFlags & SaveS_InformCallbacksAnyway))
6306	{
6307	/* Fire the data change event, even on failure (since we've already
6308	* committed all data). This is done only for SessionMachines because
6309	* mutable Machine instances are always not registered (i.e. private
6310	* to the client process that creates them) and thus don't need to
6311	* inform callbacks. */
6312	if (mType == IsSessionMachine)
6313	mParent->onMachineDataChange (mData->mUuid);
6314	}
6315
6316	LogFlowThisFunc (("rc=%08X\n", rc));
6317	LogFlowThisFuncLeave();
6318	return rc;
6319	}
6320
6321	/**
6322	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
6323	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
6324	* for more details.
6325	*
6326	* @param aSnapshot Snapshot to operate on
6327	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6328	* or SaveSS_UpdateAttrsOp possibly combined with
6329	* SaveSS_UpdateCurrentId.
6330	*
6331	* @note Locks this object for writing + other child objects.
6332	*/
6333	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
6334	{
6335	AutoCaller autoCaller (this);
6336	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6337
6338	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6339
6340	/* This object's write lock is also necessary to serialize file access
6341	* (prevent concurrent reads and writes) */
6342	AutoWriteLock alock (this);
6343
6344	AssertReturn (isConfigLocked(), E_FAIL);
6345
6346	HRESULT rc = S_OK;
6347
6348	try
6349	{
6350	using namespace settings;
6351	using namespace xml;
6352
6353	/* load the settings file */
6354	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6355	XmlTreeBackend tree;
6356
6357	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
6358	CheckComRCReturnRC (rc);
6359
6360	Key machineNode = tree.rootKey().key ("Machine");
6361
6362	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
6363	CheckComRCReturnRC (rc);
6364
6365	/* save settings on success */
6366	rc = VirtualBox::saveSettingsTree (tree, file,
6367	mData->mSettingsFileVersion);
6368	CheckComRCReturnRC (rc);
6369	}
6370	catch (...)
6371	{
6372	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6373	}
6374
6375	return rc;
6376	}
6377
6378	/**
6379	* Performs the specified operation on the given snapshot
6380	* in the settings file represented by \a aMachineNode.
6381	*
6382	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
6383	* that the whole tree of the snapshots should be updated in <Machine>.
6384	* One particular case is when the last (and the only) snapshot should be
6385	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
6386	*
6387	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
6388	* attribute of <Machine> needs to be updated.
6389	*
6390	* @param aMachineNode <Machine> node in the opened settings file.
6391	* @param aSnapshot Snapshot to operate on.
6392	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6393	* or SaveSS_UpdateAttrsOp possibly combined with
6394	* SaveSS_UpdateCurrentId.
6395	*
6396	* @note Must be called with this object locked for writing.
6397	* Locks child objects.
6398	*/
6399	HRESULT Machine::saveSnapshotSettingsWorker (settings::Key &aMachineNode,
6400	Snapshot *aSnapshot, int aOpFlags)
6401	{
6402	using namespace settings;
6403
6404	AssertReturn (!aMachineNode.isNull(), E_FAIL);
6405
6406	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
6407
6408	int op = aOpFlags & SaveSS_OpMask;
6409	AssertReturn (
6410	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
6411	op == SaveSS_UpdateAllOp)) \|\|
6412	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_CurrentId)) \|\|
6413	op == SaveSS_UpdateAllOp)),
6414	E_FAIL);
6415
6416	HRESULT rc = S_OK;
6417
6418	bool recreateWholeTree = false;
6419
6420	do
6421	{
6422	if (op == SaveSS_NoOp)
6423	break;
6424
6425	/* quick path: recreate the whole tree of the snapshots */
6426	if (op == SaveSS_UpdateAllOp && aSnapshot == NULL)
6427	{
6428	/* first, delete the entire root snapshot node if it exists */
6429	Key snapshotNode = aMachineNode.findKey ("Snapshot");
6430	if (!snapshotNode.isNull())
6431	snapshotNode.zap();
6432
6433	/* second, if we have any snapshots left, substitute aSnapshot
6434	* with the first snapshot to recreate the whole tree, otherwise
6435	* break */
6436	if (mData->mFirstSnapshot)
6437	{
6438	aSnapshot = mData->mFirstSnapshot;
6439	recreateWholeTree = true;
6440	}
6441	else
6442	break;
6443	}
6444
6445	Assert (!!aSnapshot);
6446	ComObjPtr <Snapshot> parent = aSnapshot->parent();
6447
6448	if (op == SaveSS_AddOp)
6449	{
6450	Key parentNode;
6451
6452	if (parent)
6453	{
6454	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
6455	CheckComRCBreakRC (rc);
6456
6457	ComAssertBreak (!parentNode.isNull(), rc = E_FAIL);
6458	}
6459
6460	do
6461	{
6462	Key snapshotsNode;
6463
6464	if (!parentNode.isNull())
6465	snapshotsNode = parentNode.createKey ("Snapshots");
6466	else
6467	snapshotsNode = aMachineNode;
6468	do
6469	{
6470	Key snapshotNode = snapshotsNode.appendKey ("Snapshot");
6471	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6472	CheckComRCBreakRC (rc);
6473
6474	/* when a new snapshot is added, this means diffs were created
6475	* for every normal/immutable hard disk of the VM, so we need to
6476	* save the current hard disk attachments */
6477
6478	Key storageNode = aMachineNode.findKey ("StorageControllers");
6479	if (!storageNode.isNull())
6480	storageNode.zap();
6481	storageNode = aMachineNode.createKey ("StorageControllers");
6482
6483	rc = saveStorageControllers (storageNode);
6484	CheckComRCBreakRC (rc);
6485
6486	if (mHDData->mAttachments.size() != 0)
6487	{
6488	/* If we have one or more attachments then we definitely
6489	* created diffs for them and associated new diffs with
6490	* current settngs. So, since we don't use saveSettings(),
6491	* we need to inform callbacks manually. */
6492	if (mType == IsSessionMachine)
6493	mParent->onMachineDataChange (mData->mUuid);
6494	}
6495	}
6496	while (0);
6497	}
6498	while (0);
6499
6500	break;
6501	}
6502
6503	Assert ((op == SaveSS_UpdateAttrsOp && !recreateWholeTree) \|\|
6504	op == SaveSS_UpdateAllOp);
6505
6506	Key snapshotsNode;
6507	Key snapshotNode;
6508
6509	if (!recreateWholeTree)
6510	{
6511	rc = findSnapshotNode (aSnapshot, aMachineNode,
6512	&snapshotsNode, &snapshotNode);
6513	CheckComRCBreakRC (rc);
6514	}
6515
6516	if (snapshotsNode.isNull())
6517	snapshotsNode = aMachineNode;
6518
6519	if (op == SaveSS_UpdateAttrsOp)
6520	rc = saveSnapshot (snapshotNode, aSnapshot, true /* aAttrsOnly */);
6521	else
6522	{
6523	if (!snapshotNode.isNull())
6524	snapshotNode.zap();
6525
6526	snapshotNode = snapshotsNode.appendKey ("Snapshot");
6527	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6528	CheckComRCBreakRC (rc);
6529	}
6530	}
6531	while (0);
6532
6533	if (SUCCEEDED (rc))
6534	{
6535	/* update currentSnapshot when appropriate */
6536	if (aOpFlags & SaveSS_CurrentId)
6537	{
6538	if (!mData->mCurrentSnapshot.isNull())
6539	aMachineNode.setValue <Guid> ("currentSnapshot",
6540	mData->mCurrentSnapshot->data().mId);
6541	else
6542	aMachineNode.zapValue ("currentSnapshot");
6543	}
6544	if (aOpFlags & SaveSS_CurStateModified)
6545	{
6546	/* defaults to true */
6547	aMachineNode.setValueOr <bool> ("currentStateModified",
6548	!!mData->mCurrentStateModified, true);
6549	}
6550	}
6551
6552	return rc;
6553	}
6554
6555	/**
6556	* Saves the given snapshot and all its children (unless \a aAttrsOnly is true).
6557	* It is assumed that the given node is empty (unless \a aAttrsOnly is true).
6558	*
6559	* @param aNode <Snapshot> node to save the snapshot to.
6560	* @param aSnapshot Snapshot to save.
6561	* @param aAttrsOnly If true, only updatge user-changeable attrs.
6562	*/
6563	HRESULT Machine::saveSnapshot (settings::Key &aNode, Snapshot *aSnapshot, bool aAttrsOnly)
6564	{
6565	using namespace settings;
6566
6567	AssertReturn (!aNode.isNull() && aSnapshot, E_INVALIDARG);
6568	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6569
6570	/* uuid (required) */
6571	if (!aAttrsOnly)
6572	aNode.setValue <Guid> ("uuid", aSnapshot->data().mId);
6573
6574	/* name (required) */
6575	aNode.setValue <Bstr> ("name", aSnapshot->data().mName);
6576
6577	/* timeStamp (required) */
6578	aNode.setValue <RTTIMESPEC> ("timeStamp", aSnapshot->data().mTimeStamp);
6579
6580	/* Description node (optional) */
6581	if (!aSnapshot->data().mDescription.isNull())
6582	{
6583	Key descNode = aNode.createKey ("Description");
6584	descNode.setKeyValue <Bstr> (aSnapshot->data().mDescription);
6585	}
6586	else
6587	{
6588	Key descNode = aNode.findKey ("Description");
6589	if (!descNode.isNull())
6590	descNode.zap();
6591	}
6592
6593	if (aAttrsOnly)
6594	return S_OK;
6595
6596	/* stateFile (optional) */
6597	if (aSnapshot->stateFilePath())
6598	{
6599	/* try to make the file name relative to the settings file dir */
6600	Utf8Str stateFilePath = aSnapshot->stateFilePath();
6601	calculateRelativePath (stateFilePath, stateFilePath);
6602	aNode.setStringValue ("stateFile", stateFilePath);
6603	}
6604
6605	{
6606	ComObjPtr <SnapshotMachine> snapshotMachine = aSnapshot->data().mMachine;
6607	ComAssertRet (!snapshotMachine.isNull(), E_FAIL);
6608
6609	/* save hardware */
6610	{
6611	Key hwNode = aNode.createKey ("Hardware");
6612	HRESULT rc = snapshotMachine->saveHardware (hwNode);
6613	CheckComRCReturnRC (rc);
6614	}
6615
6616	/* save hard disks. */
6617	{
6618	Key storageNode = aNode.createKey ("StorageControllers");
6619	HRESULT rc = snapshotMachine->saveStorageControllers (storageNode);
6620	CheckComRCReturnRC (rc);
6621	}
6622	}
6623
6624	/* save children */
6625	{
6626	AutoWriteLock listLock (aSnapshot->childrenLock ());
6627
6628	if (aSnapshot->children().size())
6629	{
6630	Key snapshotsNode = aNode.createKey ("Snapshots");
6631
6632	HRESULT rc = S_OK;
6633
6634	for (Snapshot::SnapshotList::const_iterator it = aSnapshot->children().begin();
6635	it != aSnapshot->children().end();
6636	++ it)
6637	{
6638	Key snapshotNode = snapshotsNode.createKey ("Snapshot");
6639	rc = saveSnapshot (snapshotNode, (*it), aAttrsOnly);
6640	CheckComRCReturnRC (rc);
6641	}
6642	}
6643	}
6644
6645	return S_OK;
6646	}
6647
6648	/**
6649	* Saves the VM hardware configuration. It is assumed that the
6650	* given node is empty.
6651	*
6652	* @param aNode <Hardware> node to save the VM hardware confguration to.
6653	*/
6654	HRESULT Machine::saveHardware (settings::Key &aNode)
6655	{
6656	using namespace settings;
6657
6658	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6659
6660	HRESULT rc = S_OK;
6661
6662	/* The hardware version attribute (optional).
6663	Automatically upgrade from 1 to 2 when there is no saved state. (ugly!) */
6664	{
6665	Utf8Str hwVersion = mHWData->mHWVersion;
6666	if ( hwVersion.compare ("1") == 0
6667	&& mSSData->mStateFilePath.isEmpty())
6668	mHWData->mHWVersion = hwVersion = "2"; /** @todo Is this safe, to update mHWVersion here? If not some other point needs to be found where this can be done. */
6669	if (hwVersion.compare ("2") == 0) /** @todo get the default from the schema if possible. */
6670	aNode.zapValue ("version");
6671	else
6672	aNode.setStringValue ("version", hwVersion.raw());
6673	}
6674
6675	/* CPU (optional, but always created atm) */
6676	{
6677	Key cpuNode = aNode.createKey ("CPU");
6678	Key hwVirtExNode = cpuNode.createKey ("HardwareVirtEx");
6679	const char *value = NULL;
6680	switch (mHWData->mHWVirtExEnabled)
6681	{
6682	case TSBool_False:
6683	value = "false";
6684	break;
6685	case TSBool_True:
6686	value = "true";
6687	break;
6688	case TSBool_Default:
6689	value = "default";
6690	break;
6691	}
6692	hwVirtExNode.setStringValue ("enabled", value);
6693
6694	/* Nested paging (optional, default is false) */
6695	if (mHWData->mHWVirtExNestedPagingEnabled)
6696	{
6697	Key HWVirtExNestedPagingNode = cpuNode.createKey ("HardwareVirtExNestedPaging");
6698	HWVirtExNestedPagingNode.setValue <bool> ("enabled", true);
6699	}
6700
6701	/* VPID (optional, default is false) */
6702	if (mHWData->mHWVirtExVPIDEnabled)
6703	{
6704	Key HWVirtExVPIDNode = cpuNode.createKey ("HardwareVirtExVPID");
6705	HWVirtExVPIDNode.setValue <bool> ("enabled", true);
6706	}
6707
6708	/* PAE (optional, default is false) */
6709	if (mHWData->mPAEEnabled)
6710	{
6711	Key PAENode = cpuNode.createKey ("PAE");
6712	PAENode.setValue <bool> ("enabled", true);
6713	}
6714
6715	/* CPU count */
6716	cpuNode.setValue <ULONG> ("count", mHWData->mCPUCount);
6717	}
6718
6719	/* memory (required) */
6720	{
6721	Key memoryNode = aNode.createKey ("Memory");
6722	memoryNode.setValue <ULONG> ("RAMSize", mHWData->mMemorySize);
6723	}
6724
6725	/* boot (required) */
6726	{
6727	Key bootNode = aNode.createKey ("Boot");
6728
6729	for (ULONG pos = 0; pos < RT_ELEMENTS (mHWData->mBootOrder); ++ pos)
6730	{
6731	const char *device = NULL;
6732	switch (mHWData->mBootOrder [pos])
6733	{
6734	case DeviceType_Null:
6735	/* skip, this is allowed for <Order> nodes
6736	* when loading, the default value NoDevice will remain */
6737	continue;
6738	case DeviceType_Floppy: device = "Floppy"; break;
6739	case DeviceType_DVD: device = "DVD"; break;
6740	case DeviceType_HardDisk: device = "HardDisk"; break;
6741	case DeviceType_Network: device = "Network"; break;
6742	default:
6743	{
6744	ComAssertMsgFailedRet (("Invalid boot device: %d",
6745	mHWData->mBootOrder [pos]),
6746	E_FAIL);
6747	}
6748	}
6749
6750	Key orderNode = bootNode.appendKey ("Order");
6751	orderNode.setValue <ULONG> ("position", pos + 1);
6752	orderNode.setStringValue ("device", device);
6753	}
6754	}
6755
6756	/* display (required) */
6757	{
6758	Key displayNode = aNode.createKey ("Display");
6759	displayNode.setValue <ULONG> ("VRAMSize", mHWData->mVRAMSize);
6760	displayNode.setValue <ULONG> ("monitorCount", mHWData->mMonitorCount);
6761	displayNode.setValue <bool> ("accelerate3D", !!mHWData->mAccelerate3DEnabled);
6762	}
6763
6764	#ifdef VBOX_WITH_VRDP
6765	/* VRDP settings (optional) */
6766	rc = mVRDPServer->saveSettings (aNode);
6767	CheckComRCReturnRC (rc);
6768	#endif
6769
6770	/* BIOS (required) */
6771	rc = mBIOSSettings->saveSettings (aNode);
6772	CheckComRCReturnRC (rc);
6773
6774	/* DVD drive (required) */
6775	rc = mDVDDrive->saveSettings (aNode);
6776	CheckComRCReturnRC (rc);
6777
6778	/* Flooppy drive (required) */
6779	rc = mFloppyDrive->saveSettings (aNode);
6780	CheckComRCReturnRC (rc);
6781
6782	/* USB Controller (required) */
6783	rc = mUSBController->saveSettings (aNode);
6784	CheckComRCReturnRC (rc);
6785
6786	/* Network adapters (required) */
6787	{
6788	Key nwNode = aNode.createKey ("Network");
6789
6790	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
6791	{
6792	Key adapterNode = nwNode.appendKey ("Adapter");
6793
6794	adapterNode.setValue <ULONG> ("slot", slot);
6795
6796	rc = mNetworkAdapters [slot]->saveSettings (adapterNode);
6797	CheckComRCReturnRC (rc);
6798	}
6799	}
6800
6801	/* Serial ports */
6802	{
6803	Key serialNode = aNode.createKey ("UART");
6804
6805	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); ++ slot)
6806	{
6807	Key portNode = serialNode.appendKey ("Port");
6808
6809	portNode.setValue <ULONG> ("slot", slot);
6810
6811	rc = mSerialPorts [slot]->saveSettings (portNode);
6812	CheckComRCReturnRC (rc);
6813	}
6814	}
6815
6816	/* Parallel ports */
6817	{
6818	Key parallelNode = aNode.createKey ("LPT");
6819
6820	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); ++ slot)
6821	{
6822	Key portNode = parallelNode.appendKey ("Port");
6823
6824	portNode.setValue <ULONG> ("slot", slot);
6825
6826	rc = mParallelPorts [slot]->saveSettings (portNode);
6827	CheckComRCReturnRC (rc);
6828	}
6829	}
6830
6831	/* Audio adapter */
6832	rc = mAudioAdapter->saveSettings (aNode);
6833	CheckComRCReturnRC (rc);
6834
6835	/* Shared folders */
6836	{
6837	Key sharedFoldersNode = aNode.createKey ("SharedFolders");
6838
6839	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
6840	it != mHWData->mSharedFolders.end();
6841	++ it)
6842	{
6843	ComObjPtr <SharedFolder> folder = *it;
6844
6845	Key folderNode = sharedFoldersNode.appendKey ("SharedFolder");
6846
6847	/* all are mandatory */
6848	folderNode.setValue <Bstr> ("name", folder->name());
6849	folderNode.setValue <Bstr> ("hostPath", folder->hostPath());
6850	folderNode.setValue <bool> ("writable", !!folder->writable());
6851	}
6852	}
6853
6854	/* Clipboard */
6855	{
6856	Key clipNode = aNode.createKey ("Clipboard");
6857
6858	const char *modeStr = "Disabled";
6859	switch (mHWData->mClipboardMode)
6860	{
6861	case ClipboardMode_Disabled:
6862	/* already assigned */
6863	break;
6864	case ClipboardMode_HostToGuest:
6865	modeStr = "HostToGuest";
6866	break;
6867	case ClipboardMode_GuestToHost:
6868	modeStr = "GuestToHost";
6869	break;
6870	case ClipboardMode_Bidirectional:
6871	modeStr = "Bidirectional";
6872	break;
6873	default:
6874	ComAssertMsgFailedRet (("Clipboard mode %d is invalid",
6875	mHWData->mClipboardMode),
6876	E_FAIL);
6877	}
6878	clipNode.setStringValue ("mode", modeStr);
6879	}
6880
6881	/* Guest */
6882	{
6883	Key guestNode = aNode.createKey ("Guest");
6884
6885	guestNode.setValue <ULONG> ("memoryBalloonSize",
6886	mHWData->mMemoryBalloonSize);
6887	guestNode.setValue <ULONG> ("statisticsUpdateInterval",
6888	mHWData->mStatisticsUpdateInterval);
6889	}
6890
6891	#ifdef VBOX_WITH_GUEST_PROPS
6892	/* Guest properties */
6893	try
6894	{
6895	using namespace guestProp;
6896
6897	Key guestPropertiesNode = aNode.createKey ("GuestProperties");
6898
6899	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
6900	it != mHWData->mGuestProperties.end(); ++it)
6901	{
6902	HWData::GuestProperty property = *it;
6903
6904	Key propertyNode = guestPropertiesNode.appendKey ("GuestProperty");
6905	char szFlags[MAX_FLAGS_LEN + 1];
6906
6907	propertyNode.setValue <Bstr> ("name", property.mName);
6908	propertyNode.setValue <Bstr> ("value", property.mValue);
6909	propertyNode.setValue <ULONG64> ("timestamp", property.mTimestamp);
6910	writeFlags (property.mFlags, szFlags);
6911	Bstr flags (szFlags);
6912	if (flags.isNull())
6913	return E_OUTOFMEMORY;
6914	propertyNode.setValue <Bstr> ("flags", flags);
6915	}
6916	Bstr emptyStr ("");
6917	if (emptyStr.isNull())
6918	return E_OUTOFMEMORY;
6919	guestPropertiesNode.setValueOr <Bstr> ("notificationPatterns",
6920	mHWData->mGuestPropertyNotificationPatterns,
6921	emptyStr);
6922	}
6923	catch (xml::ENoMemory e)
6924	{
6925	return E_OUTOFMEMORY;
6926	}
6927	#endif /* VBOX_WITH_GUEST_PROPS defined */
6928
6929	AssertComRC (rc);
6930	return rc;
6931	}
6932
6933	/**
6934	* Saves the storage controller configuration.
6935	*
6936	* @param aNode <StorageControllers> node to save the VM hardware confguration to.
6937	*/
6938	HRESULT Machine::saveStorageControllers (settings::Key &aNode)
6939	{
6940	using namespace settings;
6941
6942	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6943
6944	for (StorageControllerList::const_iterator
6945	it = mStorageControllers->begin();
6946	it != mStorageControllers->end();
6947	++ it)
6948	{
6949	HRESULT rc;
6950	const char *type = NULL;
6951	ComObjPtr <StorageController> ctl = *it;
6952
6953	Key ctlNode = aNode.appendKey ("StorageController");
6954
6955	ctlNode.setValue <Bstr> ("name", ctl->name());
6956
6957	switch (ctl->controllerType())
6958	{
6959	case StorageControllerType_IntelAhci: type = "AHCI"; break;
6960	case StorageControllerType_LsiLogic: type = "LsiLogic"; break;
6961	case StorageControllerType_BusLogic: type = "BusLogic"; break;
6962	case StorageControllerType_PIIX3: type = "PIIX3"; break;
6963	case StorageControllerType_PIIX4: type = "PIIX4"; break;
6964	case StorageControllerType_ICH6: type = "ICH6"; break;
6965	default:
6966	ComAssertFailedRet (E_FAIL);
6967	}
6968
6969	ctlNode.setStringValue ("type", type);
6970
6971	/* Save the port count. */
6972	ULONG portCount;
6973	rc = ctl->COMGETTER(PortCount)(&portCount);
6974	ComAssertRCRet(rc, rc);
6975	ctlNode.setValue <ULONG> ("PortCount", portCount);
6976
6977	/* Save IDE emulation settings. */
6978	if (ctl->controllerType() == StorageControllerType_IntelAhci)
6979	{
6980	LONG uVal;
6981
6982	rc = ctl->GetIDEEmulationPort(0, &uVal);
6983	ComAssertRCRet(rc, rc);
6984	ctlNode.setValue <LONG> ("IDE0MasterEmulationPort", uVal);
6985
6986	rc = ctl->GetIDEEmulationPort(1, &uVal);
6987	ComAssertRCRet(rc, rc);
6988	ctlNode.setValue <LONG> ("IDE0SlaveEmulationPort", uVal);
6989
6990	rc = ctl->GetIDEEmulationPort(2, &uVal);
6991	ComAssertRCRet(rc, rc);
6992	ctlNode.setValue <LONG> ("IDE1MasterEmulationPort", uVal);
6993
6994	rc = ctl->GetIDEEmulationPort(3, &uVal);
6995	ComAssertRCRet(rc, rc);
6996	ctlNode.setValue <LONG> ("IDE1SlaveEmulationPort", uVal);
6997	}
6998
6999	/* save the devices now. */
7000	rc = saveStorageDevices(ctl, ctlNode);
7001	ComAssertRCRet(rc, rc);
7002	}
7003
7004	return S_OK;
7005	}
7006
7007	/**
7008	* Saves the hard disk confguration.
7009	* It is assumed that the given node is empty.
7010	*
7011	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
7012	*/
7013	HRESULT Machine::saveStorageDevices (ComObjPtr<StorageController> aStorageController,
7014	settings::Key &aNode)
7015	{
7016	using namespace settings;
7017
7018	AssertReturn (!aNode.isNull(), E_INVALIDARG);
7019
7020	HDData::AttachmentList atts;
7021
7022	HRESULT rc = getHardDiskAttachmentsOfController(aStorageController->name(), atts);
7023	CheckComRCReturnRC(rc);
7024
7025	for (HDData::AttachmentList::const_iterator
7026	it = atts.begin();
7027	it != atts.end();
7028	++ it)
7029	{
7030	Key hdNode = aNode.appendKey ("AttachedDevice");
7031
7032	{
7033	/* device type. Only hard disk allowed atm. */
7034	hdNode.setStringValue ("type", "HardDisk");
7035	/* channel (required) */
7036	hdNode.setValue <LONG> ("port", (*it)->port());
7037	/* device (required) */
7038	hdNode.setValue <LONG> ("device", (*it)->device());
7039	/* ID of the image. */
7040	Key idNode = hdNode.appendKey ("Image");
7041	idNode.setValue <Guid> ("uuid", (*it)->hardDisk()->id());
7042	}
7043	}
7044
7045	return S_OK;
7046	}
7047
7048	/**
7049	* Saves machine state settings as defined by aFlags
7050	* (SaveSTS_* values).
7051	*
7052	* @param aFlags Combination of SaveSTS_* flags.
7053	*
7054	* @note Locks objects for writing.
7055	*/
7056	HRESULT Machine::saveStateSettings (int aFlags)
7057	{
7058	if (aFlags == 0)
7059	return S_OK;
7060
7061	AutoCaller autoCaller (this);
7062	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7063
7064	/* This object's write lock is also necessary to serialize file access
7065	* (prevent concurrent reads and writes) */
7066	AutoWriteLock alock (this);
7067
7068	AssertReturn (isConfigLocked(), E_FAIL);
7069
7070	HRESULT rc = S_OK;
7071
7072	try
7073	{
7074	using namespace settings;
7075	using namespace xml;
7076
7077	/* load the settings file */
7078	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
7079	XmlTreeBackend tree;
7080
7081	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
7082	CheckComRCReturnRC (rc);
7083
7084	Key machineNode = tree.rootKey().key ("Machine");
7085
7086	if (aFlags & SaveSTS_CurStateModified)
7087	{
7088	/* defaults to true */
7089	machineNode.setValueOr <bool> ("currentStateModified",
7090	!!mData->mCurrentStateModified, true);
7091	}
7092
7093	if (aFlags & SaveSTS_StateFilePath)
7094	{
7095	if (mSSData->mStateFilePath)
7096	{
7097	/* try to make the file name relative to the settings file dir */
7098	Utf8Str stateFilePath = mSSData->mStateFilePath;
7099	calculateRelativePath (stateFilePath, stateFilePath);
7100	machineNode.setStringValue ("stateFile", stateFilePath);
7101	}
7102	else
7103	machineNode.zapValue ("stateFile");
7104	}
7105
7106	if (aFlags & SaveSTS_StateTimeStamp)
7107	{
7108	Assert (mData->mMachineState != MachineState_Aborted \|\|
7109	mSSData->mStateFilePath.isNull());
7110
7111	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
7112	mData->mLastStateChange);
7113
7114	/* set the aborted attribute when appropriate, defaults to false */
7115	machineNode.setValueOr <bool> ("aborted",
7116	mData->mMachineState == MachineState_Aborted,
7117	false);
7118	}
7119
7120	/* save settings on success */
7121	rc = VirtualBox::saveSettingsTree (tree, file,
7122	mData->mSettingsFileVersion);
7123	CheckComRCReturnRC (rc);
7124	}
7125	catch (...)
7126	{
7127	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
7128	}
7129
7130	return rc;
7131	}
7132
7133	/**
7134	* Creates differencing hard disks for all normal hard disks attached to this
7135	* machine and a new set of attachments to refer to created disks.
7136	*
7137	* Used when taking a snapshot or when discarding the current state.
7138	*
7139	* This method assumes that mHDData contains the original hard disk attachments
7140	* it needs to create diffs for. On success, these attachments will be replaced
7141	* with the created diffs. On failure, #deleteImplicitDiffs() is implicitly
7142	* called to delete created diffs which will also rollback mHDData and restore
7143	* whatever was backed up before calling this method.
7144	*
7145	* Attachments with non-normal hard disks are left as is.
7146	*
7147	* If @a aOnline is @c false then the original hard disks that require implicit
7148	* diffs will be locked for reading. Otherwise it is assumed that they are
7149	* already locked for writing (when the VM was started). Note that in the latter
7150	* case it is responsibility of the caller to lock the newly created diffs for
7151	* writing if this method succeeds.
7152	*
7153	* @param aFolder Folder where to create diff hard disks.
7154	* @param aProgress Progress object to run (must contain at least as
7155	* many operations left as the number of hard disks
7156	* attached).
7157	* @param aOnline Whether the VM was online prior to this operation.
7158	*
7159	* @note The progress object is not marked as completed, neither on success nor
7160	* on failure. This is a responsibility of the caller.
7161	*
7162	* @note Locks this object for writing.
7163	*/
7164	HRESULT Machine::createImplicitDiffs (const Bstr &aFolder,
7165	ComObjPtr <Progress> &aProgress,
7166	bool aOnline)
7167	{
7168	AssertReturn (!aFolder.isEmpty(), E_FAIL);
7169
7170	AutoCaller autoCaller (this);
7171	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7172
7173	AutoWriteLock alock (this);
7174
7175	/* must be in a protective state because we leave the lock below */
7176	AssertReturn (mData->mMachineState == MachineState_Saving \|\|
7177	mData->mMachineState == MachineState_Discarding, E_FAIL);
7178
7179	HRESULT rc = S_OK;
7180
7181	typedef std::list< ComObjPtr<HardDisk> > LockedMedia;
7182	LockedMedia lockedMedia;
7183
7184	try
7185	{
7186	if (!aOnline)
7187	{
7188	/* lock all attached hard disks early to detect "in use"
7189	* situations before creating actual diffs */
7190	for (HDData::AttachmentList::const_iterator
7191	it = mHDData->mAttachments.begin();
7192	it != mHDData->mAttachments.end();
7193	++ it)
7194	{
7195	ComObjPtr<HardDiskAttachment> hda = *it;
7196	ComObjPtr<HardDisk> hd = hda->hardDisk();
7197
7198	rc = hd->LockRead (NULL);
7199	CheckComRCThrowRC (rc);
7200
7201	lockedMedia.push_back (hd);
7202	}
7203	}
7204
7205	/* remember the current list (note that we don't use backup() since
7206	* mHDData may be already backed up) */
7207	HDData::AttachmentList atts = mHDData->mAttachments;
7208
7209	/* start from scratch */
7210	mHDData->mAttachments.clear();
7211
7212	/* go through remembered attachments and create diffs for normal hard
7213	* disks and attach them */
7214
7215	for (HDData::AttachmentList::const_iterator
7216	it = atts.begin(); it != atts.end(); ++ it)
7217	{
7218	ComObjPtr<HardDiskAttachment> hda = *it;
7219	ComObjPtr<HardDisk> hd = hda->hardDisk();
7220
7221	/* type cannot be changed while attached => no need to lock */
7222	if (hd->type() != HardDiskType_Normal)
7223	{
7224	/* copy the attachment as is */
7225
7226	Assert (hd->type() == HardDiskType_Writethrough);
7227
7228	rc = aProgress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
7229	hd->root()->name().raw()),
7230	1); // weight
7231	CheckComRCThrowRC (rc);
7232
7233	mHDData->mAttachments.push_back (hda);
7234	continue;
7235	}
7236
7237	/* need a diff */
7238
7239	rc = aProgress->setNextOperation(BstrFmt(tr("Creating differencing hard disk for '%s'"),
7240	hd->root()->name().raw()),
7241	1); // weight
7242	CheckComRCThrowRC (rc);
7243
7244	ComObjPtr<HardDisk> diff;
7245	diff.createObject();
7246	rc = diff->init (mParent, hd->preferredDiffFormat(),
7247	BstrFmt ("%ls"RTPATH_SLASH_STR,
7248	mUserData->mSnapshotFolderFull.raw()));
7249	CheckComRCThrowRC (rc);
7250
7251	/* leave the lock before the potentially lengthy operation */
7252	alock.leave();
7253
7254	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard,
7255	&aProgress);
7256
7257	alock.enter();
7258
7259	CheckComRCThrowRC (rc);
7260
7261	rc = diff->attachTo (mData->mUuid);
7262	AssertComRCThrowRC (rc);
7263
7264	/* add a new attachment */
7265	ComObjPtr<HardDiskAttachment> attachment;
7266	attachment.createObject();
7267	rc = attachment->init (diff, hda->controller(), hda->port(),
7268	hda->device(), true /* aImplicit */);
7269	CheckComRCThrowRC (rc);
7270
7271	mHDData->mAttachments.push_back (attachment);
7272	}
7273	}
7274	catch (HRESULT aRC) { rc = aRC; }
7275
7276	/* unlock all hard disks we locked */
7277	if (!aOnline)
7278	{
7279	ErrorInfoKeeper eik;
7280
7281	for (LockedMedia::const_iterator it = lockedMedia.begin();
7282	it != lockedMedia.end(); ++ it)
7283	{
7284	HRESULT rc2 = (*it)->UnlockRead (NULL);
7285	AssertComRC (rc2);
7286	}
7287	}
7288
7289	if (FAILED (rc))
7290	{
7291	MultiResultRef mrc (rc);
7292
7293	mrc = deleteImplicitDiffs();
7294	}
7295
7296	return rc;
7297	}
7298
7299	/**
7300	* Deletes implicit differencing hard disks created either by
7301	* #createImplicitDiffs() or by #AttachHardDisk() and rolls back mHDData.
7302	*
7303	* Note that to delete hard disks created by #AttachHardDisk() this method is
7304	* called from #fixupHardDisks() when the changes are rolled back.
7305	*
7306	* @note Locks this object for writing.
7307	*/
7308	HRESULT Machine::deleteImplicitDiffs()
7309	{
7310	AutoCaller autoCaller (this);
7311	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7312
7313	AutoWriteLock alock (this);
7314
7315	AssertReturn (mHDData.isBackedUp(), E_FAIL);
7316
7317	HRESULT rc = S_OK;
7318
7319	HDData::AttachmentList implicitAtts;
7320
7321	const HDData::AttachmentList &oldAtts =
7322	mHDData.backedUpData()->mAttachments;
7323
7324	/* enumerate new attachments */
7325	for (HDData::AttachmentList::const_iterator
7326	it = mHDData->mAttachments.begin();
7327	it != mHDData->mAttachments.end(); ++ it)
7328	{
7329	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7330
7331	if ((*it)->isImplicit())
7332	{
7333	/* deassociate and mark for deletion */
7334	rc = hd->detachFrom (mData->mUuid);
7335	AssertComRC (rc);
7336	implicitAtts.push_back (*it);
7337	continue;
7338	}
7339
7340	/* was this hard disk attached before? */
7341	HDData::AttachmentList::const_iterator oldIt =
7342	std::find_if(oldAtts.begin(), oldAtts.end(),
7343	HardDiskAttachment::RefersTo (hd));
7344	if (oldIt == oldAtts.end())
7345	{
7346	/* no: de-associate */
7347	rc = hd->detachFrom (mData->mUuid);
7348	AssertComRC (rc);
7349	continue;
7350	}
7351	}
7352
7353	/* rollback hard disk changes */
7354	mHDData.rollback();
7355
7356	MultiResult mrc (S_OK);
7357
7358	/* delete unused implicit diffs */
7359	if (implicitAtts.size() != 0)
7360	{
7361	/* will leave the lock before the potentially lengthy
7362	* operation, so protect with the special state (unless already
7363	* protected) */
7364	MachineState_T oldState = mData->mMachineState;
7365	if (oldState != MachineState_Saving &&
7366	oldState != MachineState_Discarding)
7367	{
7368	setMachineState (MachineState_SettingUp);
7369	}
7370
7371	alock.leave();
7372
7373	for (HDData::AttachmentList::const_iterator
7374	it = implicitAtts.begin();
7375	it != implicitAtts.end(); ++ it)
7376	{
7377	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7378
7379	mrc = hd->deleteStorageAndWait();
7380	}
7381
7382	alock.enter();
7383
7384	if (mData->mMachineState == MachineState_SettingUp)
7385	{
7386	setMachineState (oldState);
7387	}
7388	}
7389
7390	return mrc;
7391	}
7392
7393	/**
7394	* Perform deferred hard disk detachments on success and deletion of implicitly
7395	* created diffs on failure.
7396	*
7397	* Does nothing if the hard disk attachment data (mHDData) is not changed (not
7398	* backed up).
7399	*
7400	* When the data is backed up, this method will commit mHDData if @a aCommit is
7401	* @c true and rollback it otherwise before returning.
7402	*
7403	* If @a aOnline is @c true then this method called with @a aCommit = @c true
7404	* will also unlock the old hard disks for which the new implicit diffs were
7405	* created and will lock these new diffs for writing. When @a aCommit is @c
7406	* false, this argument is ignored.
7407	*
7408	* @param aCommit @c true if called on success.
7409	* @param aOnline Whether the VM was online prior to this operation.
7410	*
7411	* @note Locks this object for writing!
7412	*/
7413	void Machine::fixupHardDisks(bool aCommit, bool aOnline /= false/)
7414	{
7415	AutoCaller autoCaller (this);
7416	AssertComRCReturnVoid (autoCaller.rc());
7417
7418	AutoWriteLock alock (this);
7419
7420	/* no attach/detach operations -- nothing to do */
7421	if (!mHDData.isBackedUp())
7422	return;
7423
7424	HRESULT rc = S_OK;
7425
7426	if (aCommit)
7427	{
7428	HDData::AttachmentList &oldAtts =
7429	mHDData.backedUpData()->mAttachments;
7430
7431	/* enumerate new attachments */
7432	for (HDData::AttachmentList::const_iterator
7433	it = mHDData->mAttachments.begin();
7434	it != mHDData->mAttachments.end(); ++ it)
7435	{
7436	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7437
7438	if ((*it)->isImplicit())
7439	{
7440	/* convert implicit attachment to normal */
7441	(*it)->setImplicit (false);
7442
7443	if (aOnline)
7444	{
7445	rc = hd->LockWrite (NULL);
7446	AssertComRC (rc);
7447
7448	mData->mSession.mLockedMedia.push_back (
7449	Data::Session::LockedMedia::value_type (
7450	ComPtr <IHardDisk> (hd), true));
7451
7452	/* also, relock the old hard disk which is a base for the
7453	* new diff for reading if the VM is online */
7454
7455	ComObjPtr<HardDisk> parent = hd->parent();
7456	/* make the relock atomic */
7457	AutoWriteLock parentLock (parent);
7458	rc = parent->UnlockWrite (NULL);
7459	AssertComRC (rc);
7460	rc = parent->LockRead (NULL);
7461	AssertComRC (rc);
7462
7463	/* XXX actually we should replace the old entry in that
7464	* vector (write lock => read lock) but this would take
7465	* some effort. So lets just ignore the error code in
7466	* SessionMachine::unlockMedia(). */
7467	mData->mSession.mLockedMedia.push_back (
7468	Data::Session::LockedMedia::value_type (
7469	ComPtr <IHardDisk> (parent), false));
7470	}
7471
7472	continue;
7473	}
7474
7475	/* was this hard disk attached before? */
7476	HDData::AttachmentList::iterator oldIt =
7477	std::find_if (oldAtts.begin(), oldAtts.end(),
7478	HardDiskAttachment::RefersTo (hd));
7479	if (oldIt != oldAtts.end())
7480	{
7481	/* yes: remove from old to avoid de-association */
7482	oldAtts.erase (oldIt);
7483	}
7484	}
7485
7486	/* enumerate remaining old attachments and de-associate from the
7487	* current machine state */
7488	for (HDData::AttachmentList::const_iterator it = oldAtts.begin();
7489	it != oldAtts.end(); ++ it)
7490	{
7491	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7492
7493	/* now de-associate from the current machine state */
7494	rc = hd->detachFrom (mData->mUuid);
7495	AssertComRC (rc);
7496
7497	if (aOnline)
7498	{
7499	/* unlock since not used anymore */
7500	MediaState_T state;
7501	rc = hd->UnlockWrite (&state);
7502	/* the disk may be alredy relocked for reading above */
7503	Assert (SUCCEEDED (rc) \|\| state == MediaState_LockedRead);
7504	}
7505	}
7506
7507	/* commit the hard disk changes */
7508	mHDData.commit();
7509
7510	if (mType == IsSessionMachine)
7511	{
7512	/* attach new data to the primary machine and reshare it */
7513	mPeer->mHDData.attach (mHDData);
7514	}
7515	}
7516	else
7517	{
7518	deleteImplicitDiffs();
7519	}
7520
7521	return;
7522	}
7523
7524	/**
7525	* Helper to lock the machine configuration for write access.
7526	*
7527	* @return S_OK or E_FAIL and sets error info on failure
7528	*
7529	* @note Doesn't lock anything (must be called from this object's lock)
7530	*/
7531	HRESULT Machine::lockConfig()
7532	{
7533	HRESULT rc = S_OK;
7534
7535	if (!isConfigLocked())
7536	{
7537	/* open the associated config file */
7538	int vrc = RTFileOpen (&mData->mHandleCfgFile,
7539	Utf8Str (mData->mConfigFileFull),
7540	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
7541	RTFILE_O_DENY_WRITE);
7542	if (RT_FAILURE (vrc))
7543	{
7544	mData->mHandleCfgFile = NIL_RTFILE;
7545
7546	rc = setError (E_FAIL,
7547	tr ("Could not lock the settings file '%ls' (%Rrc)"),
7548	mData->mConfigFileFull.raw(), vrc);
7549	}
7550	}
7551
7552	LogFlowThisFunc (("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
7553	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
7554	return rc;
7555	}
7556
7557	/**
7558	* Helper to unlock the machine configuration from write access
7559	*
7560	* @return S_OK
7561	*
7562	* @note Doesn't lock anything.
7563	* @note Not thread safe (must be called from this object's lock).
7564	*/
7565	HRESULT Machine::unlockConfig()
7566	{
7567	HRESULT rc = S_OK;
7568
7569	if (isConfigLocked())
7570	{
7571	RTFileFlush (mData->mHandleCfgFile);
7572	RTFileClose (mData->mHandleCfgFile);
7573	/** @todo flush the directory. */
7574	mData->mHandleCfgFile = NIL_RTFILE;
7575	}
7576
7577	LogFlowThisFunc (("\n"));
7578
7579	return rc;
7580	}
7581
7582	/**
7583	* Returns true if the settings file is located in the directory named exactly
7584	* as the machine. This will be true if the machine settings structure was
7585	* created by default in #openConfigLoader().
7586	*
7587	* @param aSettingsDir if not NULL, the full machine settings file directory
7588	* name will be assigned there.
7589	*
7590	* @note Doesn't lock anything.
7591	* @note Not thread safe (must be called from this object's lock).
7592	*/
7593	bool Machine::isInOwnDir (Utf8Str aSettingsDir / = NULL */)
7594	{
7595	Utf8Str settingsDir = mData->mConfigFileFull;
7596	RTPathStripFilename (settingsDir.mutableRaw());
7597	char *dirName = RTPathFilename (settingsDir);
7598
7599	AssertReturn (dirName, false);
7600
7601	/* if we don't rename anything on name change, return false shorlty */
7602	if (!mUserData->mNameSync)
7603	return false;
7604
7605	if (aSettingsDir)
7606	*aSettingsDir = settingsDir;
7607
7608	return Bstr (dirName) == mUserData->mName;
7609	}
7610
7611	/**
7612	* @note Locks objects for reading!
7613	*/
7614	bool Machine::isModified()
7615	{
7616	AutoCaller autoCaller (this);
7617	AssertComRCReturn (autoCaller.rc(), false);
7618
7619	AutoReadLock alock (this);
7620
7621	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7622	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
7623	return true;
7624
7625	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7626	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
7627	return true;
7628
7629	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7630	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
7631	return true;
7632
7633	if (!mStorageControllers.isNull())
7634	{
7635	for (StorageControllerList::const_iterator it =
7636	mStorageControllers->begin();
7637	it != mStorageControllers->end();
7638	++ it)
7639	{
7640	if ((*it)->isModified())
7641	return true;
7642	}
7643	}
7644
7645	return
7646	mUserData.isBackedUp() \|\|
7647	mHWData.isBackedUp() \|\|
7648	mHDData.isBackedUp() \|\|
7649	mStorageControllers.isBackedUp() \|\|
7650	#ifdef VBOX_WITH_VRDP
7651	(mVRDPServer && mVRDPServer->isModified()) \|\|
7652	#endif
7653	(mDVDDrive && mDVDDrive->isModified()) \|\|
7654	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
7655	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
7656	(mUSBController && mUSBController->isModified()) \|\|
7657	(mBIOSSettings && mBIOSSettings->isModified());
7658	}
7659
7660	/**
7661	* Returns the logical OR of data.hasActualChanges() of this and all child
7662	* objects.
7663	*
7664	* @param aIgnoreUserData @c true to ignore changes to mUserData
7665	*
7666	* @note Locks objects for reading!
7667	*/
7668	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
7669	{
7670	AutoCaller autoCaller (this);
7671	AssertComRCReturn (autoCaller.rc(), false);
7672
7673	AutoReadLock alock (this);
7674
7675	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7676	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
7677	return true;
7678
7679	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7680	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
7681	return true;
7682
7683	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7684	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
7685	return true;
7686
7687	if (!mStorageControllers.isBackedUp())
7688	{
7689	/* see whether any of the devices has changed its data */
7690	for (StorageControllerList::const_iterator
7691	it = mStorageControllers->begin();
7692	it != mStorageControllers->end();
7693	++ it)
7694	{
7695	if ((*it)->isReallyModified())
7696	return true;
7697	}
7698	}
7699	else
7700	{
7701	if (mStorageControllers->size() != mStorageControllers.backedUpData()->size())
7702	return true;
7703	}
7704
7705	return
7706	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
7707	mHWData.hasActualChanges() \|\|
7708	mHDData.hasActualChanges() \|\|
7709	mStorageControllers.hasActualChanges() \|\|
7710	#ifdef VBOX_WITH_VRDP
7711	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
7712	#endif
7713	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
7714	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
7715	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
7716	(mUSBController && mUSBController->isReallyModified()) \|\|
7717	(mBIOSSettings && mBIOSSettings->isReallyModified());
7718	}
7719
7720	/**
7721	* Discards all changes to machine settings.
7722	*
7723	* @param aNotify Whether to notify the direct session about changes or not.
7724	*
7725	* @note Locks objects for writing!
7726	*/
7727	void Machine::rollback (bool aNotify)
7728	{
7729	AutoCaller autoCaller (this);
7730	AssertComRCReturn (autoCaller.rc(), (void) 0);
7731
7732	AutoWriteLock alock (this);
7733
7734	/* check for changes in own data */
7735
7736	bool sharedFoldersChanged = false, storageChanged = false;
7737
7738	if (aNotify && mHWData.isBackedUp())
7739	{
7740	if (mHWData->mSharedFolders.size() !=
7741	mHWData.backedUpData()->mSharedFolders.size())
7742	sharedFoldersChanged = true;
7743	else
7744	{
7745	for (HWData::SharedFolderList::iterator rit =
7746	mHWData->mSharedFolders.begin();
7747	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
7748	++ rit)
7749	{
7750	for (HWData::SharedFolderList::iterator cit =
7751	mHWData.backedUpData()->mSharedFolders.begin();
7752	cit != mHWData.backedUpData()->mSharedFolders.end();
7753	++ cit)
7754	{
7755	if ((cit)->name() != (rit)->name() \|\|
7756	(cit)->hostPath() != (rit)->hostPath())
7757	{
7758	sharedFoldersChanged = true;
7759	break;
7760	}
7761	}
7762	}
7763	}
7764	}
7765
7766	if (!mStorageControllers.isNull())
7767	{
7768	if (mStorageControllers.isBackedUp())
7769	{
7770	/* unitialize all new devices (absent in the backed up list). */
7771	StorageControllerList::const_iterator it = mStorageControllers->begin();
7772	StorageControllerList *backedList = mStorageControllers.backedUpData();
7773	while (it != mStorageControllers->end())
7774	{
7775	if (std::find (backedList->begin(), backedList->end(), *it ) ==
7776	backedList->end())
7777	{
7778	(*it)->uninit();
7779	}
7780	++ it;
7781	}
7782
7783	/* restore the list */
7784	mStorageControllers.rollback();
7785	}
7786
7787	/* rollback any changes to devices after restoring the list */
7788	StorageControllerList::const_iterator it = mStorageControllers->begin();
7789	while (it != mStorageControllers->end())
7790	{
7791	if ((*it)->isModified())
7792	(*it)->rollback();
7793
7794	++ it;
7795	}
7796	}
7797
7798	mUserData.rollback();
7799
7800	mHWData.rollback();
7801
7802	if (mHDData.isBackedUp())
7803	fixupHardDisks(false /* aCommit */);
7804
7805	/* check for changes in child objects */
7806
7807	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
7808	usbChanged = false;
7809
7810	ComPtr <INetworkAdapter> networkAdapters [RT_ELEMENTS (mNetworkAdapters)];
7811	ComPtr <ISerialPort> serialPorts [RT_ELEMENTS (mSerialPorts)];
7812	ComPtr <IParallelPort> parallelPorts [RT_ELEMENTS (mParallelPorts)];
7813
7814	if (mBIOSSettings)
7815	mBIOSSettings->rollback();
7816
7817	#ifdef VBOX_WITH_VRDP
7818	if (mVRDPServer)
7819	vrdpChanged = mVRDPServer->rollback();
7820	#endif
7821
7822	if (mDVDDrive)
7823	dvdChanged = mDVDDrive->rollback();
7824
7825	if (mFloppyDrive)
7826	floppyChanged = mFloppyDrive->rollback();
7827
7828	if (mAudioAdapter)
7829	mAudioAdapter->rollback();
7830
7831	if (mUSBController)
7832	usbChanged = mUSBController->rollback();
7833
7834	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7835	if (mNetworkAdapters [slot])
7836	if (mNetworkAdapters [slot]->rollback())
7837	networkAdapters [slot] = mNetworkAdapters [slot];
7838
7839	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7840	if (mSerialPorts [slot])
7841	if (mSerialPorts [slot]->rollback())
7842	serialPorts [slot] = mSerialPorts [slot];
7843
7844	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7845	if (mParallelPorts [slot])
7846	if (mParallelPorts [slot]->rollback())
7847	parallelPorts [slot] = mParallelPorts [slot];
7848
7849	if (aNotify)
7850	{
7851	/* inform the direct session about changes */
7852
7853	ComObjPtr <Machine> that = this;
7854	alock.leave();
7855
7856	if (sharedFoldersChanged)
7857	that->onSharedFolderChange();
7858
7859	if (vrdpChanged)
7860	that->onVRDPServerChange();
7861	if (dvdChanged)
7862	that->onDVDDriveChange();
7863	if (floppyChanged)
7864	that->onFloppyDriveChange();
7865	if (usbChanged)
7866	that->onUSBControllerChange();
7867
7868	for (ULONG slot = 0; slot < RT_ELEMENTS (networkAdapters); slot ++)
7869	if (networkAdapters [slot])
7870	that->onNetworkAdapterChange (networkAdapters [slot]);
7871	for (ULONG slot = 0; slot < RT_ELEMENTS (serialPorts); slot ++)
7872	if (serialPorts [slot])
7873	that->onSerialPortChange (serialPorts [slot]);
7874	for (ULONG slot = 0; slot < RT_ELEMENTS (parallelPorts); slot ++)
7875	if (parallelPorts [slot])
7876	that->onParallelPortChange (parallelPorts [slot]);
7877
7878	if (storageChanged)
7879	that->onStorageControllerChange();
7880	}
7881	}
7882
7883	/**
7884	* Commits all the changes to machine settings.
7885	*
7886	* Note that this operation is supposed to never fail.
7887	*
7888	* @note Locks this object and children for writing.
7889	*/
7890	void Machine::commit()
7891	{
7892	AutoCaller autoCaller (this);
7893	AssertComRCReturnVoid (autoCaller.rc());
7894
7895	AutoCaller peerCaller (mPeer);
7896	AssertComRCReturnVoid (peerCaller.rc());
7897
7898	AutoMultiWriteLock2 alock (mPeer, this);
7899
7900	/*
7901	* use safe commit to ensure Snapshot machines (that share mUserData)
7902	* will still refer to a valid memory location
7903	*/
7904	mUserData.commitCopy();
7905
7906	mHWData.commit();
7907
7908	if (mHDData.isBackedUp())
7909	fixupHardDisks(true /* aCommit */);
7910
7911	mBIOSSettings->commit();
7912	#ifdef VBOX_WITH_VRDP
7913	mVRDPServer->commit();
7914	#endif
7915	mDVDDrive->commit();
7916	mFloppyDrive->commit();
7917	mAudioAdapter->commit();
7918	mUSBController->commit();
7919
7920	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7921	mNetworkAdapters [slot]->commit();
7922	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7923	mSerialPorts [slot]->commit();
7924	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7925	mParallelPorts [slot]->commit();
7926
7927	bool commitStorageControllers = false;
7928
7929	if (mStorageControllers.isBackedUp())
7930	{
7931	mStorageControllers.commit();
7932
7933	if (mPeer)
7934	{
7935	AutoWriteLock peerlock (mPeer);
7936
7937	/* Commit all changes to new controllers (this will reshare data with
7938	* peers for thos who have peers) */
7939	StorageControllerList *newList = new StorageControllerList();
7940	StorageControllerList::const_iterator it = mStorageControllers->begin();
7941	while (it != mStorageControllers->end())
7942	{
7943	(*it)->commit();
7944
7945	/* look if this controller has a peer device */
7946	ComObjPtr<StorageController> peer = (*it)->peer();
7947	if (!peer)
7948	{
7949	/* no peer means the device is a newly created one;
7950	* create a peer owning data this device share it with */
7951	peer.createObject();
7952	peer->init (mPeer, it, true / aReshare */);
7953	}
7954	else
7955	{
7956	/* remove peer from the old list */
7957	mPeer->mStorageControllers->remove (peer);
7958	}
7959	/* and add it to the new list */
7960	newList->push_back(peer);
7961
7962	++ it;
7963	}
7964
7965	/* uninit old peer's controllers that are left */
7966	it = mPeer->mStorageControllers->begin();
7967	while (it != mPeer->mStorageControllers->end())
7968	{
7969	(*it)->uninit();
7970	++ it;
7971	}
7972
7973	/* attach new list of controllers to our peer */
7974	mPeer->mStorageControllers.attach (newList);
7975	}
7976	else
7977	{
7978	/* we have no peer (our parent is the newly created machine);
7979	* just commit changes to devices */
7980	commitStorageControllers = true;
7981	}
7982	}
7983	else
7984	{
7985	/* the list of controllers itself is not changed,
7986	* just commit changes to controllers themselves */
7987	commitStorageControllers = true;
7988	}
7989
7990	if (commitStorageControllers)
7991	{
7992	StorageControllerList::const_iterator it = mStorageControllers->begin();
7993	while (it != mStorageControllers->end())
7994	{
7995	(*it)->commit();
7996	++ it;
7997	}
7998	}
7999
8000	if (mType == IsSessionMachine)
8001	{
8002	/* attach new data to the primary machine and reshare it */
8003	mPeer->mUserData.attach (mUserData);
8004	mPeer->mHWData.attach (mHWData);
8005	/* mHDData is reshared by fixupHardDisks */
8006	// mPeer->mHDData.attach (mHDData);
8007	Assert (mPeer->mHDData.data() == mHDData.data());
8008	}
8009	}
8010
8011	/**
8012	* Copies all the hardware data from the given machine.
8013	*
8014	* Currently, only called when the VM is being restored from a snapshot. In
8015	* particular, this implies that the VM is not running during this method's
8016	* call.
8017	*
8018	* @note This method must be called from under this object's lock.
8019	*
8020	* @note This method doesn't call #commit(), so all data remains backed up and
8021	* unsaved.
8022	*/
8023	void Machine::copyFrom (Machine *aThat)
8024	{
8025	AssertReturnVoid (mType == IsMachine \|\| mType == IsSessionMachine);
8026	AssertReturnVoid (aThat->mType == IsSnapshotMachine);
8027
8028	AssertReturnVoid (!Global::IsOnline (mData->mMachineState));
8029
8030	mHWData.assignCopy (aThat->mHWData);
8031
8032	// create copies of all shared folders (mHWData after attiching a copy
8033	// contains just references to original objects)
8034	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
8035	it != mHWData->mSharedFolders.end();
8036	++ it)
8037	{
8038	ComObjPtr <SharedFolder> folder;
8039	folder.createObject();
8040	HRESULT rc = folder->initCopy (machine(), *it);
8041	AssertComRC (rc);
8042	*it = folder;
8043	}
8044
8045	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
8046	#ifdef VBOX_WITH_VRDP
8047	mVRDPServer->copyFrom (aThat->mVRDPServer);
8048	#endif
8049	mDVDDrive->copyFrom (aThat->mDVDDrive);
8050	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
8051	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
8052	mUSBController->copyFrom (aThat->mUSBController);
8053
8054	/* create private copies of all controllers */
8055	mStorageControllers.backup();
8056	mStorageControllers->clear();
8057	for (StorageControllerList::iterator it = aThat->mStorageControllers->begin();
8058	it != aThat->mStorageControllers->end();
8059	++ it)
8060	{
8061	ComObjPtr <StorageController> ctrl;
8062	ctrl.createObject();
8063	ctrl->initCopy (this, *it);
8064	mStorageControllers->push_back(ctrl);
8065	}
8066
8067	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8068	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
8069	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8070	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
8071	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8072	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
8073	}
8074
8075	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8076	void Machine::registerMetrics (PerformanceCollector aCollector, Machine aMachine, RTPROCESS pid)
8077	{
8078	pm::CollectorHAL *hal = aCollector->getHAL();
8079	/* Create sub metrics */
8080	pm::SubMetric *cpuLoadUser = new pm::SubMetric ("CPU/Load/User",
8081	"Percentage of processor time spent in user mode by VM process.");
8082	pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
8083	"Percentage of processor time spent in kernel mode by VM process.");
8084	pm::SubMetric *ramUsageUsed = new pm::SubMetric ("RAM/Usage/Used",
8085	"Size of resident portion of VM process in memory.");
8086	/* Create and register base metrics */
8087	IUnknown *objptr;
8088
8089	ComObjPtr<Machine> tmp = aMachine;
8090	tmp.queryInterfaceTo (&objptr);
8091	pm::BaseMetric *cpuLoad = new pm::MachineCpuLoadRaw (hal, objptr, pid,
8092	cpuLoadUser, cpuLoadKernel);
8093	aCollector->registerBaseMetric (cpuLoad);
8094	pm::BaseMetric *ramUsage = new pm::MachineRamUsage (hal, objptr, pid,
8095	ramUsageUsed);
8096	aCollector->registerBaseMetric (ramUsage);
8097
8098	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser, 0));
8099	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8100	new pm::AggregateAvg()));
8101	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8102	new pm::AggregateMin()));
8103	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8104	new pm::AggregateMax()));
8105	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel, 0));
8106	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8107	new pm::AggregateAvg()));
8108	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8109	new pm::AggregateMin()));
8110	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8111	new pm::AggregateMax()));
8112
8113	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed, 0));
8114	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8115	new pm::AggregateAvg()));
8116	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8117	new pm::AggregateMin()));
8118	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8119	new pm::AggregateMax()));
8120	};
8121
8122	void Machine::unregisterMetrics (PerformanceCollector aCollector, Machine aMachine)
8123	{
8124	aCollector->unregisterMetricsFor (aMachine);
8125	aCollector->unregisterBaseMetricsFor (aMachine);
8126	};
8127	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8128
8129
8130	/////////////////////////////////////////////////////////////////////////////
8131	// SessionMachine class
8132	/////////////////////////////////////////////////////////////////////////////
8133
8134	/** Task structure for asynchronous VM operations */
8135	struct SessionMachine::Task
8136	{
8137	Task (SessionMachine m, Progress p)
8138	: machine (m), progress (p)
8139	, state (m->mData->mMachineState) // save the current machine state
8140	, subTask (false)
8141	{}
8142
8143	void modifyLastState (MachineState_T s)
8144	{
8145	const_cast <MachineState_T > (&state) = s;
8146	}
8147
8148	virtual void handler() = 0;
8149
8150	ComObjPtr <SessionMachine> machine;
8151	ComObjPtr <Progress> progress;
8152	const MachineState_T state;
8153
8154	bool subTask : 1;
8155	};
8156
8157	/** Take snapshot task */
8158	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
8159	{
8160	TakeSnapshotTask (SessionMachine *m)
8161	: Task (m, NULL) {}
8162
8163	void handler() { machine->takeSnapshotHandler (*this); }
8164	};
8165
8166	/** Discard snapshot task */
8167	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
8168	{
8169	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
8170	: Task (m, p)
8171	, snapshot (s) {}
8172
8173	DiscardSnapshotTask (const Task &task, Snapshot *s)
8174	: Task (task)
8175	, snapshot (s) {}
8176
8177	void handler() { machine->discardSnapshotHandler (*this); }
8178
8179	ComObjPtr <Snapshot> snapshot;
8180	};
8181
8182	/** Discard current state task */
8183	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
8184	{
8185	DiscardCurrentStateTask (SessionMachine m, Progress p,
8186	bool discardCurSnapshot)
8187	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
8188
8189	void handler() { machine->discardCurrentStateHandler (*this); }
8190
8191	const bool discardCurrentSnapshot;
8192	};
8193
8194	////////////////////////////////////////////////////////////////////////////////
8195
8196	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
8197
8198	HRESULT SessionMachine::FinalConstruct()
8199	{
8200	LogFlowThisFunc (("\n"));
8201
8202	/* set the proper type to indicate we're the SessionMachine instance */
8203	unconst (mType) = IsSessionMachine;
8204
8205	#if defined(RT_OS_WINDOWS)
8206	mIPCSem = NULL;
8207	#elif defined(RT_OS_OS2)
8208	mIPCSem = NULLHANDLE;
8209	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8210	mIPCSem = -1;
8211	#else
8212	# error "Port me!"
8213	#endif
8214
8215	return S_OK;
8216	}
8217
8218	void SessionMachine::FinalRelease()
8219	{
8220	LogFlowThisFunc (("\n"));
8221
8222	uninit (Uninit::Unexpected);
8223	}
8224
8225	/**
8226	* @note Must be called only by Machine::openSession() from its own write lock.
8227	*/
8228	HRESULT SessionMachine::init (Machine *aMachine)
8229	{
8230	LogFlowThisFuncEnter();
8231	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
8232
8233	AssertReturn (aMachine, E_INVALIDARG);
8234
8235	AssertReturn (aMachine->lockHandle()->isWriteLockOnCurrentThread(), E_FAIL);
8236
8237	/* Enclose the state transition NotReady->InInit->Ready */
8238	AutoInitSpan autoInitSpan (this);
8239	AssertReturn (autoInitSpan.isOk(), E_FAIL);
8240
8241	/* create the interprocess semaphore */
8242	#if defined(RT_OS_WINDOWS)
8243	mIPCSemName = aMachine->mData->mConfigFileFull;
8244	for (size_t i = 0; i < mIPCSemName.length(); i++)
8245	if (mIPCSemName[i] == '\\')
8246	mIPCSemName[i] = '/';
8247	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
8248	ComAssertMsgRet (mIPCSem,
8249	("Cannot create IPC mutex '%ls', err=%d",
8250	mIPCSemName.raw(), ::GetLastError()),
8251	E_FAIL);
8252	#elif defined(RT_OS_OS2)
8253	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%RTuuid}",
8254	aMachine->mData->mUuid.raw());
8255	mIPCSemName = ipcSem;
8256	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
8257	ComAssertMsgRet (arc == NO_ERROR,
8258	("Cannot create IPC mutex '%s', arc=%ld",
8259	ipcSem.raw(), arc),
8260	E_FAIL);
8261	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8262	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8263	AssertCompileSize(key_t, 4);
8264	key_t key;
8265	mIPCSem = -1;
8266	mIPCKey = "0";
8267	for (uint32_t i = 0; i < 1 << 24; i++)
8268	{
8269	key = ((uint32_t)'V' << 24) \| i;
8270	int sem = ::semget (key, 1, S_IRUSR \| S_IWUSR \| IPC_CREAT \| IPC_EXCL);
8271	if (sem >= 0 \|\| (errno != EEXIST && errno != EACCES))
8272	{
8273	mIPCSem = sem;
8274	if (sem >= 0)
8275	mIPCKey = BstrFmt ("%u", key);
8276	break;
8277	}
8278	}
8279	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8280	Utf8Str semName = aMachine->mData->mConfigFileFull;
8281	char *pszSemName = NULL;
8282	RTStrUtf8ToCurrentCP (&pszSemName, semName);
8283	key_t key = ::ftok (pszSemName, 'V');
8284	RTStrFree (pszSemName);
8285
8286	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
8287	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8288
8289	int errnoSave = errno;
8290	if (mIPCSem < 0 && errnoSave == ENOSYS)
8291	{
8292	setError (E_FAIL,
8293	tr ("Cannot create IPC semaphore. Most likely your host kernel lacks "
8294	"support for SysV IPC. Check the host kernel configuration for "
8295	"CONFIG_SYSVIPC=y"));
8296	return E_FAIL;
8297	}
8298	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errnoSave),
8299	E_FAIL);
8300	/* set the initial value to 1 */
8301	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
8302	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
8303	E_FAIL);
8304	#else
8305	# error "Port me!"
8306	#endif
8307
8308	/* memorize the peer Machine */
8309	unconst (mPeer) = aMachine;
8310	/* share the parent pointer */
8311	unconst (mParent) = aMachine->mParent;
8312
8313	/* take the pointers to data to share */
8314	mData.share (aMachine->mData);
8315	mSSData.share (aMachine->mSSData);
8316
8317	mUserData.share (aMachine->mUserData);
8318	mHWData.share (aMachine->mHWData);
8319	mHDData.share (aMachine->mHDData);
8320
8321	mStorageControllers.allocate();
8322	StorageControllerList::const_iterator it = aMachine->mStorageControllers->begin();
8323	while (it != aMachine->mStorageControllers->end())
8324	{
8325	ComObjPtr <StorageController> ctl;
8326	ctl.createObject();
8327	ctl->init(this, *it);
8328	mStorageControllers->push_back (ctl);
8329	++ it;
8330	}
8331
8332	unconst (mBIOSSettings).createObject();
8333	mBIOSSettings->init (this, aMachine->mBIOSSettings);
8334	#ifdef VBOX_WITH_VRDP
8335	/* create another VRDPServer object that will be mutable */
8336	unconst (mVRDPServer).createObject();
8337	mVRDPServer->init (this, aMachine->mVRDPServer);
8338	#endif
8339	/* create another DVD drive object that will be mutable */
8340	unconst (mDVDDrive).createObject();
8341	mDVDDrive->init (this, aMachine->mDVDDrive);
8342	/* create another floppy drive object that will be mutable */
8343	unconst (mFloppyDrive).createObject();
8344	mFloppyDrive->init (this, aMachine->mFloppyDrive);
8345	/* create another audio adapter object that will be mutable */
8346	unconst (mAudioAdapter).createObject();
8347	mAudioAdapter->init (this, aMachine->mAudioAdapter);
8348	/* create a list of serial ports that will be mutable */
8349	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8350	{
8351	unconst (mSerialPorts [slot]).createObject();
8352	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
8353	}
8354	/* create a list of parallel ports that will be mutable */
8355	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8356	{
8357	unconst (mParallelPorts [slot]).createObject();
8358	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
8359	}
8360	/* create another USB controller object that will be mutable */
8361	unconst (mUSBController).createObject();
8362	mUSBController->init (this, aMachine->mUSBController);
8363
8364	/* create a list of network adapters that will be mutable */
8365	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8366	{
8367	unconst (mNetworkAdapters [slot]).createObject();
8368	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
8369	}
8370
8371	/* Confirm a successful initialization when it's the case */
8372	autoInitSpan.setSucceeded();
8373
8374	LogFlowThisFuncLeave();
8375	return S_OK;
8376	}
8377
8378	/**
8379	* Uninitializes this session object. If the reason is other than
8380	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
8381	*
8382	* @param aReason uninitialization reason
8383	*
8384	* @note Locks mParent + this object for writing.
8385	*/
8386	void SessionMachine::uninit (Uninit::Reason aReason)
8387	{
8388	LogFlowThisFuncEnter();
8389	LogFlowThisFunc (("reason=%d\n", aReason));
8390
8391	/*
8392	* Strongly reference ourselves to prevent this object deletion after
8393	* mData->mSession.mMachine.setNull() below (which can release the last
8394	* reference and call the destructor). Important: this must be done before
8395	* accessing any members (and before AutoUninitSpan that does it as well).
8396	* This self reference will be released as the very last step on return.
8397	*/
8398	ComObjPtr <SessionMachine> selfRef = this;
8399
8400	/* Enclose the state transition Ready->InUninit->NotReady */
8401	AutoUninitSpan autoUninitSpan (this);
8402	if (autoUninitSpan.uninitDone())
8403	{
8404	LogFlowThisFunc (("Already uninitialized\n"));
8405	LogFlowThisFuncLeave();
8406	return;
8407	}
8408
8409	if (autoUninitSpan.initFailed())
8410	{
8411	/* We've been called by init() because it's failed. It's not really
8412	* necessary (nor it's safe) to perform the regular uninit sequense
8413	* below, the following is enough.
8414	*/
8415	LogFlowThisFunc (("Initialization failed.\n"));
8416	#if defined(RT_OS_WINDOWS)
8417	if (mIPCSem)
8418	::CloseHandle (mIPCSem);
8419	mIPCSem = NULL;
8420	#elif defined(RT_OS_OS2)
8421	if (mIPCSem != NULLHANDLE)
8422	::DosCloseMutexSem (mIPCSem);
8423	mIPCSem = NULLHANDLE;
8424	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8425	if (mIPCSem >= 0)
8426	::semctl (mIPCSem, 0, IPC_RMID);
8427	mIPCSem = -1;
8428	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8429	mIPCKey = "0";
8430	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8431	#else
8432	# error "Port me!"
8433	#endif
8434	uninitDataAndChildObjects();
8435	mData.free();
8436	unconst (mParent).setNull();
8437	unconst (mPeer).setNull();
8438	LogFlowThisFuncLeave();
8439	return;
8440	}
8441
8442	/* We need to lock this object in uninit() because the lock is shared
8443	* with mPeer (as well as data we modify below). mParent->addProcessToReap()
8444	* and others need mParent lock. */
8445	AutoMultiWriteLock2 alock (mParent, this);
8446
8447	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8448	unregisterMetrics (mParent->performanceCollector(), mPeer);
8449	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8450
8451	MachineState_T lastState = mData->mMachineState;
8452
8453	if (aReason == Uninit::Abnormal)
8454	{
8455	LogWarningThisFunc (("ABNORMAL client termination! (wasBusy=%d)\n",
8456	Global::IsOnlineOrTransient (lastState)));
8457
8458	/* reset the state to Aborted */
8459	if (mData->mMachineState != MachineState_Aborted)
8460	setMachineState (MachineState_Aborted);
8461	}
8462
8463	if (isModified())
8464	{
8465	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
8466	rollback (false /* aNotify */);
8467	}
8468
8469	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
8470	if (mSnapshotData.mStateFilePath)
8471	{
8472	LogWarningThisFunc (("canceling failed save state request!\n"));
8473	endSavingState (FALSE /* aSuccess */);
8474	}
8475	else if (!mSnapshotData.mSnapshot.isNull())
8476	{
8477	LogWarningThisFunc (("canceling untaken snapshot!\n"));
8478	endTakingSnapshot (FALSE /* aSuccess */);
8479	}
8480
8481	#ifdef VBOX_WITH_USB
8482	/* release all captured USB devices */
8483	if (aReason == Uninit::Abnormal && Global::IsOnline (lastState))
8484	{
8485	/* Console::captureUSBDevices() is called in the VM process only after
8486	* setting the machine state to Starting or Restoring.
8487	* Console::detachAllUSBDevices() will be called upon successful
8488	* termination. So, we need to release USB devices only if there was
8489	* an abnormal termination of a running VM.
8490	*
8491	* This is identical to SessionMachine::DetachAllUSBDevices except
8492	* for the aAbnormal argument. */
8493	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8494	AssertComRC (rc);
8495	NOREF (rc);
8496
8497	USBProxyService *service = mParent->host()->usbProxyService();
8498	if (service)
8499	service->detachAllDevicesFromVM (this, true /* aDone /, true / aAbnormal */);
8500	}
8501	#endif /* VBOX_WITH_USB */
8502
8503	if (!mData->mSession.mType.isNull())
8504	{
8505	/* mType is not null when this machine's process has been started by
8506	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
8507	* need to queue the PID to reap the process (and avoid zombies on
8508	* Linux). */
8509	Assert (mData->mSession.mPid != NIL_RTPROCESS);
8510	mParent->addProcessToReap (mData->mSession.mPid);
8511	}
8512
8513	mData->mSession.mPid = NIL_RTPROCESS;
8514
8515	if (aReason == Uninit::Unexpected)
8516	{
8517	/* Uninitialization didn't come from #checkForDeath(), so tell the
8518	* client watcher thread to update the set of machines that have open
8519	* sessions. */
8520	mParent->updateClientWatcher();
8521	}
8522
8523	/* uninitialize all remote controls */
8524	if (mData->mSession.mRemoteControls.size())
8525	{
8526	LogFlowThisFunc (("Closing remote sessions (%d):\n",
8527	mData->mSession.mRemoteControls.size()));
8528
8529	Data::Session::RemoteControlList::iterator it =
8530	mData->mSession.mRemoteControls.begin();
8531	while (it != mData->mSession.mRemoteControls.end())
8532	{
8533	LogFlowThisFunc ((" Calling remoteControl->Uninitialize()...\n"));
8534	HRESULT rc = (*it)->Uninitialize();
8535	LogFlowThisFunc ((" remoteControl->Uninitialize() returned %08X\n", rc));
8536	if (FAILED (rc))
8537	LogWarningThisFunc (("Forgot to close the remote session?\n"));
8538	++ it;
8539	}
8540	mData->mSession.mRemoteControls.clear();
8541	}
8542
8543	/*
8544	* An expected uninitialization can come only from #checkForDeath().
8545	* Otherwise it means that something's got really wrong (for examlple,
8546	* the Session implementation has released the VirtualBox reference
8547	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
8548	* etc). However, it's also possible, that the client releases the IPC
8549	* semaphore correctly (i.e. before it releases the VirtualBox reference),
8550	* but the VirtualBox release event comes first to the server process.
8551	* This case is practically possible, so we should not assert on an
8552	* unexpected uninit, just log a warning.
8553	*/
8554
8555	if ((aReason == Uninit::Unexpected))
8556	LogWarningThisFunc (("Unexpected SessionMachine uninitialization!\n"));
8557
8558	if (aReason != Uninit::Normal)
8559	{
8560	mData->mSession.mDirectControl.setNull();
8561	}
8562	else
8563	{
8564	/* this must be null here (see #OnSessionEnd()) */
8565	Assert (mData->mSession.mDirectControl.isNull());
8566	Assert (mData->mSession.mState == SessionState_Closing);
8567	Assert (!mData->mSession.mProgress.isNull());
8568
8569	mData->mSession.mProgress->notifyComplete (S_OK);
8570	mData->mSession.mProgress.setNull();
8571	}
8572
8573	/* remove the association between the peer machine and this session machine */
8574	Assert (mData->mSession.mMachine == this \|\|
8575	aReason == Uninit::Unexpected);
8576
8577	/* reset the rest of session data */
8578	mData->mSession.mMachine.setNull();
8579	mData->mSession.mState = SessionState_Closed;
8580	mData->mSession.mType.setNull();
8581
8582	/* close the interprocess semaphore before leaving the shared lock */
8583	#if defined(RT_OS_WINDOWS)
8584	if (mIPCSem)
8585	::CloseHandle (mIPCSem);
8586	mIPCSem = NULL;
8587	#elif defined(RT_OS_OS2)
8588	if (mIPCSem != NULLHANDLE)
8589	::DosCloseMutexSem (mIPCSem);
8590	mIPCSem = NULLHANDLE;
8591	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8592	if (mIPCSem >= 0)
8593	::semctl (mIPCSem, 0, IPC_RMID);
8594	mIPCSem = -1;
8595	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8596	mIPCKey = "0";
8597	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8598	#else
8599	# error "Port me!"
8600	#endif
8601
8602	/* fire an event */
8603	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
8604
8605	uninitDataAndChildObjects();
8606
8607	/* free the essential data structure last */
8608	mData.free();
8609
8610	/* leave the shared lock before setting the below two to NULL */
8611	alock.leave();
8612
8613	unconst (mParent).setNull();
8614	unconst (mPeer).setNull();
8615
8616	LogFlowThisFuncLeave();
8617	}
8618
8619	// util::Lockable interface
8620	////////////////////////////////////////////////////////////////////////////////
8621
8622	/**
8623	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
8624	* with the primary Machine instance (mPeer).
8625	*/
8626	RWLockHandle *SessionMachine::lockHandle() const
8627	{
8628	AssertReturn (!mPeer.isNull(), NULL);
8629	return mPeer->lockHandle();
8630	}
8631
8632	// IInternalMachineControl methods
8633	////////////////////////////////////////////////////////////////////////////////
8634
8635	/**
8636	* @note Locks the same as #setMachineState() does.
8637	*/
8638	STDMETHODIMP SessionMachine::UpdateState (MachineState_T aMachineState)
8639	{
8640	return setMachineState (aMachineState);
8641	}
8642
8643	/**
8644	* @note Locks this object for reading.
8645	*/
8646	STDMETHODIMP SessionMachine::GetIPCId (BSTR *aId)
8647	{
8648	AutoCaller autoCaller (this);
8649	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8650
8651	AutoReadLock alock (this);
8652
8653	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
8654	mIPCSemName.cloneTo (aId);
8655	return S_OK;
8656	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8657	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8658	mIPCKey.cloneTo (aId);
8659	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8660	mData->mConfigFileFull.cloneTo (aId);
8661	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8662	return S_OK;
8663	#else
8664	# error "Port me!"
8665	#endif
8666	}
8667
8668	/**
8669	* Goes through the USB filters of the given machine to see if the given
8670	* device matches any filter or not.
8671	*
8672	* @note Locks the same as USBController::hasMatchingFilter() does.
8673	*/
8674	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
8675	BOOL *aMatched,
8676	ULONG *aMaskedIfs)
8677	{
8678	LogFlowThisFunc (("\n"));
8679
8680	CheckComArgNotNull (aUSBDevice);
8681	CheckComArgOutPointerValid (aMatched);
8682
8683	AutoCaller autoCaller (this);
8684	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8685
8686	#ifdef VBOX_WITH_USB
8687	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
8688	#else
8689	*aMatched = FALSE;
8690	#endif
8691
8692	return S_OK;
8693	}
8694
8695	/**
8696	* @note Locks the same as Host::captureUSBDevice() does.
8697	*/
8698	STDMETHODIMP SessionMachine::CaptureUSBDevice (IN_GUID aId)
8699	{
8700	LogFlowThisFunc (("\n"));
8701
8702	AutoCaller autoCaller (this);
8703	AssertComRCReturnRC (autoCaller.rc());
8704
8705	#ifdef VBOX_WITH_USB
8706	/* if captureDeviceForVM() fails, it must have set extended error info */
8707	MultiResult rc = mParent->host()->checkUSBProxyService();
8708	CheckComRCReturnRC (rc);
8709
8710	USBProxyService *service = mParent->host()->usbProxyService();
8711	AssertReturn (service, E_FAIL);
8712	return service->captureDeviceForVM (this, aId);
8713	#else
8714	return E_NOTIMPL;
8715	#endif
8716	}
8717
8718	/**
8719	* @note Locks the same as Host::detachUSBDevice() does.
8720	*/
8721	STDMETHODIMP SessionMachine::DetachUSBDevice (IN_GUID aId, BOOL aDone)
8722	{
8723	LogFlowThisFunc (("\n"));
8724
8725	AutoCaller autoCaller (this);
8726	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8727
8728	#ifdef VBOX_WITH_USB
8729	USBProxyService *service = mParent->host()->usbProxyService();
8730	AssertReturn (service, E_FAIL);
8731	return service->detachDeviceFromVM (this, aId, !!aDone);
8732	#else
8733	return E_NOTIMPL;
8734	#endif
8735	}
8736
8737	/**
8738	* Inserts all machine filters to the USB proxy service and then calls
8739	* Host::autoCaptureUSBDevices().
8740	*
8741	* Called by Console from the VM process upon VM startup.
8742	*
8743	* @note Locks what called methods lock.
8744	*/
8745	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
8746	{
8747	LogFlowThisFunc (("\n"));
8748
8749	AutoCaller autoCaller (this);
8750	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8751
8752	#ifdef VBOX_WITH_USB
8753	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
8754	AssertComRC (rc);
8755	NOREF (rc);
8756
8757	USBProxyService *service = mParent->host()->usbProxyService();
8758	AssertReturn (service, E_FAIL);
8759	return service->autoCaptureDevicesForVM (this);
8760	#else
8761	return S_OK;
8762	#endif
8763	}
8764
8765	/**
8766	* Removes all machine filters from the USB proxy service and then calls
8767	* Host::detachAllUSBDevices().
8768	*
8769	* Called by Console from the VM process upon normal VM termination or by
8770	* SessionMachine::uninit() upon abnormal VM termination (from under the
8771	* Machine/SessionMachine lock).
8772	*
8773	* @note Locks what called methods lock.
8774	*/
8775	STDMETHODIMP SessionMachine::DetachAllUSBDevices (BOOL aDone)
8776	{
8777	LogFlowThisFunc (("\n"));
8778
8779	AutoCaller autoCaller (this);
8780	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8781
8782	#ifdef VBOX_WITH_USB
8783	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8784	AssertComRC (rc);
8785	NOREF (rc);
8786
8787	USBProxyService *service = mParent->host()->usbProxyService();
8788	AssertReturn (service, E_FAIL);
8789	return service->detachAllDevicesFromVM (this, !!aDone, false /* aAbnormal */);
8790	#else
8791	return S_OK;
8792	#endif
8793	}
8794
8795	/**
8796	* @note Locks this object for writing.
8797	*/
8798	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
8799	IProgress **aProgress)
8800	{
8801	LogFlowThisFuncEnter();
8802
8803	AssertReturn (aSession, E_INVALIDARG);
8804	AssertReturn (aProgress, E_INVALIDARG);
8805
8806	AutoCaller autoCaller (this);
8807
8808	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8809	/*
8810	* We don't assert below because it might happen that a non-direct session
8811	* informs us it is closed right after we've been uninitialized -- it's ok.
8812	*/
8813	CheckComRCReturnRC (autoCaller.rc());
8814
8815	/* get IInternalSessionControl interface */
8816	ComPtr <IInternalSessionControl> control (aSession);
8817
8818	ComAssertRet (!control.isNull(), E_INVALIDARG);
8819
8820	AutoWriteLock alock (this);
8821
8822	if (control.equalsTo (mData->mSession.mDirectControl))
8823	{
8824	ComAssertRet (aProgress, E_POINTER);
8825
8826	/* The direct session is being normally closed by the client process
8827	* ----------------------------------------------------------------- */
8828
8829	/* go to the closing state (essential for all open*Session() calls and
8830	* for #checkForDeath()) */
8831	Assert (mData->mSession.mState == SessionState_Open);
8832	mData->mSession.mState = SessionState_Closing;
8833
8834	/* set direct control to NULL to release the remote instance */
8835	mData->mSession.mDirectControl.setNull();
8836	LogFlowThisFunc (("Direct control is set to NULL\n"));
8837
8838	/* Create the progress object the client will use to wait until
8839	* #checkForDeath() is called to uninitialize this session object after
8840	* it releases the IPC semaphore. */
8841	ComObjPtr <Progress> progress;
8842	progress.createObject();
8843	progress->init (mParent, static_cast <IMachine *> (mPeer),
8844	Bstr (tr ("Closing session")), FALSE /* aCancelable */);
8845	progress.queryInterfaceTo (aProgress);
8846	mData->mSession.mProgress = progress;
8847	}
8848	else
8849	{
8850	/* the remote session is being normally closed */
8851	Data::Session::RemoteControlList::iterator it =
8852	mData->mSession.mRemoteControls.begin();
8853	while (it != mData->mSession.mRemoteControls.end())
8854	{
8855	if (control.equalsTo (*it))
8856	break;
8857	++it;
8858	}
8859	BOOL found = it != mData->mSession.mRemoteControls.end();
8860	ComAssertMsgRet (found, ("The session is not found in the session list!"),
8861	E_INVALIDARG);
8862	mData->mSession.mRemoteControls.remove (*it);
8863	}
8864
8865	LogFlowThisFuncLeave();
8866	return S_OK;
8867	}
8868
8869	/**
8870	* @note Locks this object for writing.
8871	*/
8872	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
8873	{
8874	LogFlowThisFuncEnter();
8875
8876	AssertReturn (aProgress, E_INVALIDARG);
8877	AssertReturn (aStateFilePath, E_POINTER);
8878
8879	AutoCaller autoCaller (this);
8880	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8881
8882	AutoWriteLock alock (this);
8883
8884	AssertReturn (mData->mMachineState == MachineState_Paused &&
8885	mSnapshotData.mLastState == MachineState_Null &&
8886	mSnapshotData.mProgressId.isEmpty() &&
8887	mSnapshotData.mStateFilePath.isNull(),
8888	E_FAIL);
8889
8890	/* memorize the progress ID and add it to the global collection */
8891	Guid progressId;
8892	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
8893	AssertComRCReturn (rc, rc);
8894	rc = mParent->addProgress (aProgress);
8895	AssertComRCReturn (rc, rc);
8896
8897	Bstr stateFilePath;
8898	/* stateFilePath is null when the machine is not running */
8899	if (mData->mMachineState == MachineState_Paused)
8900	{
8901	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
8902	mUserData->mSnapshotFolderFull.raw(),
8903	RTPATH_DELIMITER, mData->mUuid.raw());
8904	}
8905
8906	/* fill in the snapshot data */
8907	mSnapshotData.mLastState = mData->mMachineState;
8908	mSnapshotData.mProgressId = progressId;
8909	mSnapshotData.mStateFilePath = stateFilePath;
8910
8911	/* set the state to Saving (this is expected by Console::SaveState()) */
8912	setMachineState (MachineState_Saving);
8913
8914	stateFilePath.cloneTo (aStateFilePath);
8915
8916	return S_OK;
8917	}
8918
8919	/**
8920	* @note Locks mParent + this object for writing.
8921	*/
8922	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
8923	{
8924	LogFlowThisFunc (("\n"));
8925
8926	AutoCaller autoCaller (this);
8927	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8928
8929	/* endSavingState() need mParent lock */
8930	AutoMultiWriteLock2 alock (mParent, this);
8931
8932	AssertReturn (mData->mMachineState == MachineState_Saving &&
8933	mSnapshotData.mLastState != MachineState_Null &&
8934	!mSnapshotData.mProgressId.isEmpty() &&
8935	!mSnapshotData.mStateFilePath.isNull(),
8936	E_FAIL);
8937
8938	/*
8939	* on success, set the state to Saved;
8940	* on failure, set the state to the state we had when BeginSavingState() was
8941	* called (this is expected by Console::SaveState() and
8942	* Console::saveStateThread())
8943	*/
8944	if (aSuccess)
8945	setMachineState (MachineState_Saved);
8946	else
8947	setMachineState (mSnapshotData.mLastState);
8948
8949	return endSavingState (aSuccess);
8950	}
8951
8952	/**
8953	* @note Locks this object for writing.
8954	*/
8955	STDMETHODIMP SessionMachine::AdoptSavedState (IN_BSTR aSavedStateFile)
8956	{
8957	LogFlowThisFunc (("\n"));
8958
8959	AssertReturn (aSavedStateFile, E_INVALIDARG);
8960
8961	AutoCaller autoCaller (this);
8962	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8963
8964	AutoWriteLock alock (this);
8965
8966	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
8967	mData->mMachineState == MachineState_Aborted,
8968	E_FAIL);
8969
8970	Utf8Str stateFilePathFull = aSavedStateFile;
8971	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
8972	if (RT_FAILURE (vrc))
8973	return setError (VBOX_E_FILE_ERROR,
8974	tr ("Invalid saved state file path '%ls' (%Rrc)"),
8975	aSavedStateFile, vrc);
8976
8977	mSSData->mStateFilePath = stateFilePathFull;
8978
8979	/* The below setMachineState() will detect the state transition and will
8980	* update the settings file */
8981
8982	return setMachineState (MachineState_Saved);
8983	}
8984
8985	/**
8986	* @note Locks mParent + this object for writing.
8987	*/
8988	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
8989	IConsole *aInitiator, IN_BSTR aName, IN_BSTR aDescription,
8990	IProgress aProgress, BSTR aStateFilePath,
8991	IProgress **aServerProgress)
8992	{
8993	LogFlowThisFuncEnter();
8994
8995	AssertReturn (aInitiator && aName, E_INVALIDARG);
8996	AssertReturn (aStateFilePath && aServerProgress, E_POINTER);
8997
8998	LogFlowThisFunc (("aName='%ls'\n", aName));
8999
9000	AutoCaller autoCaller (this);
9001	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9002
9003	/* saveSettings() needs mParent lock */
9004	AutoMultiWriteLock2 alock (mParent, this);
9005
9006	AssertReturn ((!Global::IsOnlineOrTransient (mData->mMachineState) \|\|
9007	mData->mMachineState == MachineState_Paused) &&
9008	mSnapshotData.mLastState == MachineState_Null &&
9009	mSnapshotData.mSnapshot.isNull() &&
9010	mSnapshotData.mServerProgress.isNull() &&
9011	mSnapshotData.mCombinedProgress.isNull(),
9012	E_FAIL);
9013
9014	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
9015
9016	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
9017	{
9018	/* save all current settings to ensure current changes are committed and
9019	* hard disks are fixed up */
9020	HRESULT rc = saveSettings();
9021	CheckComRCReturnRC (rc);
9022	}
9023
9024	/// @todo NEWMEDIA so far, we decided to allow for Writhethrough hard disks
9025	/// when taking snapshots putting all the responsibility to the user...
9026	#if 0
9027	/* check that there are no Writethrough hard disks attached */
9028	for (HDData::AttachmentList::const_iterator
9029	it = mHDData->mAttachments.begin();
9030	it != mHDData->mAttachments.end();
9031	++ it)
9032	{
9033	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
9034	AutoReadLock hdLock (hd);
9035	if (hd->type() == HardDiskType_Writethrough)
9036	return setError (E_FAIL,
9037	tr ("Cannot take a snapshot because the Writethrough hard disk "
9038	"'%ls' is attached to this virtual machine"),
9039	hd->locationFull().raw());
9040	}
9041	#endif
9042
9043	AssertReturn (aProgress \|\| !takingSnapshotOnline, E_FAIL);
9044
9045	/* create an ID for the snapshot */
9046	Guid snapshotId;
9047	snapshotId.create();
9048
9049	Bstr stateFilePath;
9050	/* stateFilePath is null when the machine is not online nor saved */
9051	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
9052	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
9053	mUserData->mSnapshotFolderFull.raw(),
9054	RTPATH_DELIMITER,
9055	snapshotId.ptr());
9056
9057	/* ensure the directory for the saved state file exists */
9058	if (stateFilePath)
9059	{
9060	HRESULT rc = VirtualBox::ensureFilePathExists (Utf8Str (stateFilePath));
9061	CheckComRCReturnRC (rc);
9062	}
9063
9064	/* create a snapshot machine object */
9065	ComObjPtr <SnapshotMachine> snapshotMachine;
9066	snapshotMachine.createObject();
9067	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
9068	AssertComRCReturn (rc, rc);
9069
9070	Bstr progressDesc = BstrFmt (tr ("Taking snapshot of virtual machine '%ls'"),
9071	mUserData->mName.raw());
9072	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
9073
9074	/* create a server-side progress object (it will be descriptionless when we
9075	* need to combine it with the VM-side progress, i.e. when we're taking a
9076	* snapshot online). The number of operations is: 1 (preparing) + # of
9077	* hard disks + 1 (if the state is saved so we need to copy it)
9078	*/
9079	ComObjPtr <Progress> serverProgress;
9080	serverProgress.createObject();
9081	{
9082	ULONG opCount = 1 + (ULONG)mHDData->mAttachments.size();
9083	if (mData->mMachineState == MachineState_Saved)
9084	opCount ++;
9085	if (takingSnapshotOnline)
9086	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
9087	else
9088	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
9089	opCount, firstOpDesc);
9090	AssertComRCReturn (rc, rc);
9091	}
9092
9093	/* create a combined server-side progress object when necessary */
9094	ComObjPtr <CombinedProgress> combinedProgress;
9095	if (takingSnapshotOnline)
9096	{
9097	combinedProgress.createObject();
9098	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
9099	serverProgress, aProgress);
9100	AssertComRCReturn (rc, rc);
9101	}
9102
9103	/* create a snapshot object */
9104	RTTIMESPEC time;
9105	ComObjPtr <Snapshot> snapshot;
9106	snapshot.createObject();
9107	rc = snapshot->init (snapshotId, aName, aDescription,
9108	*RTTimeNow (&time), snapshotMachine,
9109	mData->mCurrentSnapshot);
9110	AssertComRCReturnRC (rc);
9111
9112	/* create and start the task on a separate thread (note that it will not
9113	* start working until we release alock) */
9114	TakeSnapshotTask *task = new TakeSnapshotTask (this);
9115	int vrc = RTThreadCreate (NULL, taskHandler,
9116	(void *) task,
9117	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
9118	if (RT_FAILURE (vrc))
9119	{
9120	snapshot->uninit();
9121	delete task;
9122	ComAssertRCRet (vrc, E_FAIL);
9123	}
9124
9125	/* fill in the snapshot data */
9126	mSnapshotData.mLastState = mData->mMachineState;
9127	mSnapshotData.mSnapshot = snapshot;
9128	mSnapshotData.mServerProgress = serverProgress;
9129	mSnapshotData.mCombinedProgress = combinedProgress;
9130
9131	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
9132	setMachineState (MachineState_Saving);
9133
9134	if (takingSnapshotOnline)
9135	stateFilePath.cloneTo (aStateFilePath);
9136	else
9137	*aStateFilePath = NULL;
9138
9139	serverProgress.queryInterfaceTo (aServerProgress);
9140
9141	LogFlowThisFuncLeave();
9142	return S_OK;
9143	}
9144
9145	/**
9146	* @note Locks this object for writing.
9147	*/
9148	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
9149	{
9150	LogFlowThisFunc (("\n"));
9151
9152	AutoCaller autoCaller (this);
9153	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9154
9155	AutoWriteLock alock (this);
9156
9157	AssertReturn (!aSuccess \|\|
9158	(mData->mMachineState == MachineState_Saving &&
9159	mSnapshotData.mLastState != MachineState_Null &&
9160	!mSnapshotData.mSnapshot.isNull() &&
9161	!mSnapshotData.mServerProgress.isNull() &&
9162	!mSnapshotData.mCombinedProgress.isNull()),
9163	E_FAIL);
9164
9165	/* set the state to the state we had when BeginTakingSnapshot() was called
9166	* (this is expected by Console::TakeSnapshot() and
9167	* Console::saveStateThread()) */
9168	setMachineState (mSnapshotData.mLastState);
9169
9170	return endTakingSnapshot (aSuccess);
9171	}
9172
9173	/**
9174	* @note Locks mParent + this + children objects for writing!
9175	*/
9176	STDMETHODIMP SessionMachine::DiscardSnapshot (
9177	IConsole *aInitiator, IN_GUID aId,
9178	MachineState_T aMachineState, IProgress *aProgress)
9179	{
9180	LogFlowThisFunc (("\n"));
9181
9182	Guid id = aId;
9183	AssertReturn (aInitiator && !id.isEmpty(), E_INVALIDARG);
9184	AssertReturn (aMachineState && aProgress, E_POINTER);
9185
9186	AutoCaller autoCaller (this);
9187	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9188
9189	/* saveSettings() needs mParent lock */
9190	AutoMultiWriteLock2 alock (mParent, this);
9191
9192	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9193
9194	ComObjPtr <Snapshot> snapshot;
9195	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
9196	CheckComRCReturnRC (rc);
9197
9198	AutoWriteLock snapshotLock (snapshot);
9199
9200	{
9201	AutoWriteLock chLock (snapshot->childrenLock());
9202	size_t childrenCount = snapshot->children().size();
9203	if (childrenCount > 1)
9204	return setError (VBOX_E_INVALID_OBJECT_STATE,
9205	tr ("Snapshot '%ls' of the machine '%ls' has more than one "
9206	"child snapshot (%d)"),
9207	snapshot->data().mName.raw(), mUserData->mName.raw(),
9208	childrenCount);
9209	}
9210
9211	/* If the snapshot being discarded is the current one, ensure current
9212	* settings are committed and saved.
9213	*/
9214	if (snapshot == mData->mCurrentSnapshot)
9215	{
9216	if (isModified())
9217	{
9218	rc = saveSettings();
9219	CheckComRCReturnRC (rc);
9220	}
9221	}
9222
9223	/* create a progress object. The number of operations is:
9224	* 1 (preparing) + # of hard disks + 1 if the snapshot is online
9225	*/
9226	ComObjPtr <Progress> progress;
9227	progress.createObject();
9228	rc = progress->init (mParent, aInitiator,
9229	Bstr (Utf8StrFmt (tr ("Discarding snapshot '%ls'"),
9230	snapshot->data().mName.raw())),
9231	FALSE /* aCancelable */,
9232	1 + (ULONG)snapshot->data().mMachine->mHDData->mAttachments.size() +
9233	(snapshot->stateFilePath().isNull() ? 0 : 1),
9234	Bstr (tr ("Preparing to discard snapshot")));
9235	AssertComRCReturn (rc, rc);
9236
9237	/* create and start the task on a separate thread */
9238	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
9239	int vrc = RTThreadCreate (NULL, taskHandler,
9240	(void *) task,
9241	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
9242	if (RT_FAILURE (vrc))
9243	delete task;
9244	ComAssertRCRet (vrc, E_FAIL);
9245
9246	/* set the proper machine state (note: after creating a Task instance) */
9247	setMachineState (MachineState_Discarding);
9248
9249	/* return the progress to the caller */
9250	progress.queryInterfaceTo (aProgress);
9251
9252	/* return the new state to the caller */
9253	*aMachineState = mData->mMachineState;
9254
9255	return S_OK;
9256	}
9257
9258	/**
9259	* @note Locks this + children objects for writing!
9260	*/
9261	STDMETHODIMP SessionMachine::DiscardCurrentState (
9262	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9263	{
9264	LogFlowThisFunc (("\n"));
9265
9266	AssertReturn (aInitiator, E_INVALIDARG);
9267	AssertReturn (aMachineState && aProgress, E_POINTER);
9268
9269	AutoCaller autoCaller (this);
9270	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9271
9272	AutoWriteLock alock (this);
9273
9274	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9275
9276	if (mData->mCurrentSnapshot.isNull())
9277	return setError (VBOX_E_INVALID_OBJECT_STATE,
9278	tr ("Could not discard the current state of the machine '%ls' "
9279	"because it doesn't have any snapshots"),
9280	mUserData->mName.raw());
9281
9282	/* create a progress object. The number of operations is: 1 (preparing) + #
9283	* of hard disks + 1 (if we need to copy the saved state file) */
9284	ComObjPtr <Progress> progress;
9285	progress.createObject();
9286	{
9287	ULONG opCount = 1 + (ULONG)mData->mCurrentSnapshot->data()
9288	.mMachine->mHDData->mAttachments.size();
9289	if (mData->mCurrentSnapshot->stateFilePath())
9290	++ opCount;
9291	progress->init (mParent, aInitiator,
9292	Bstr (tr ("Discarding current machine state")),
9293	FALSE /* aCancelable */, opCount,
9294	Bstr (tr ("Preparing to discard current state")));
9295	}
9296
9297	/* create and start the task on a separate thread (note that it will not
9298	* start working until we release alock) */
9299	DiscardCurrentStateTask *task =
9300	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
9301	int vrc = RTThreadCreate (NULL, taskHandler,
9302	(void *) task,
9303	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
9304	if (RT_FAILURE (vrc))
9305	{
9306	delete task;
9307	ComAssertRCRet (vrc, E_FAIL);
9308	}
9309
9310	/* set the proper machine state (note: after creating a Task instance) */
9311	setMachineState (MachineState_Discarding);
9312
9313	/* return the progress to the caller */
9314	progress.queryInterfaceTo (aProgress);
9315
9316	/* return the new state to the caller */
9317	*aMachineState = mData->mMachineState;
9318
9319	return S_OK;
9320	}
9321
9322	/**
9323	* @note Locks thos object for writing!
9324	*/
9325	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState (
9326	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9327	{
9328	LogFlowThisFunc (("\n"));
9329
9330	AssertReturn (aInitiator, E_INVALIDARG);
9331	AssertReturn (aMachineState && aProgress, E_POINTER);
9332
9333	AutoCaller autoCaller (this);
9334	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9335
9336	AutoWriteLock alock (this);
9337
9338	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9339
9340	if (mData->mCurrentSnapshot.isNull())
9341	return setError (VBOX_E_INVALID_OBJECT_STATE,
9342	tr ("Could not discard the current state of the machine '%ls' "
9343	"because it doesn't have any snapshots"),
9344	mUserData->mName.raw());
9345
9346	/* create a progress object. The number of operations is:
9347	* 1 (preparing) + # of hard disks in the current snapshot +
9348	* # of hard disks in the previous snapshot +
9349	* 1 if we need to copy the saved state file of the previous snapshot +
9350	* 1 if the current snapshot is online
9351	* or (if there is no previous snapshot):
9352	* 1 (preparing) + # of hard disks in the current snapshot * 2 +
9353	* 1 if we need to copy the saved state file of the current snapshot * 2
9354	*/
9355	ComObjPtr <Progress> progress;
9356	progress.createObject();
9357	{
9358	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
9359	ComObjPtr <Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
9360
9361	ULONG opCount = 1;
9362	if (prevSnapshot)
9363	{
9364	opCount += (ULONG)curSnapshot->data().mMachine->mHDData->mAttachments.size();
9365	opCount += (ULONG)prevSnapshot->data().mMachine->mHDData->mAttachments.size();
9366	if (prevSnapshot->stateFilePath())
9367	++ opCount;
9368	if (curSnapshot->stateFilePath())
9369	++ opCount;
9370	}
9371	else
9372	{
9373	opCount +=
9374	(ULONG)curSnapshot->data().mMachine->mHDData->mAttachments.size() * 2;
9375	if (curSnapshot->stateFilePath())
9376	opCount += 2;
9377	}
9378
9379	progress->init (mParent, aInitiator,
9380	Bstr (tr ("Discarding current machine snapshot and state")),
9381	FALSE /* aCancelable */, opCount,
9382	Bstr (tr ("Preparing to discard current snapshot and state")));
9383	}
9384
9385	/* create and start the task on a separate thread */
9386	DiscardCurrentStateTask *task =
9387	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
9388	int vrc = RTThreadCreate (NULL, taskHandler,
9389	(void *) task,
9390	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurStSnp");
9391	if (RT_FAILURE (vrc))
9392	{
9393	delete task;
9394	ComAssertRCRet (vrc, E_FAIL);
9395	}
9396
9397	/* set the proper machine state (note: after creating a Task instance) */
9398	setMachineState (MachineState_Discarding);
9399
9400	/* return the progress to the caller */
9401	progress.queryInterfaceTo (aProgress);
9402
9403	/* return the new state to the caller */
9404	*aMachineState = mData->mMachineState;
9405
9406	return S_OK;
9407	}
9408
9409	STDMETHODIMP SessionMachine::
9410	PullGuestProperties (ComSafeArrayOut (BSTR, aNames),
9411	ComSafeArrayOut (BSTR, aValues),
9412	ComSafeArrayOut (ULONG64, aTimestamps),
9413	ComSafeArrayOut (BSTR, aFlags))
9414	{
9415	LogFlowThisFunc (("\n"));
9416
9417	#ifdef VBOX_WITH_GUEST_PROPS
9418	using namespace guestProp;
9419
9420	AutoCaller autoCaller (this);
9421	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9422
9423	AutoReadLock alock (this);
9424
9425	AssertReturn (!ComSafeArrayOutIsNull (aNames), E_POINTER);
9426	AssertReturn (!ComSafeArrayOutIsNull (aValues), E_POINTER);
9427	AssertReturn (!ComSafeArrayOutIsNull (aTimestamps), E_POINTER);
9428	AssertReturn (!ComSafeArrayOutIsNull (aFlags), E_POINTER);
9429
9430	size_t cEntries = mHWData->mGuestProperties.size();
9431	com::SafeArray <BSTR> names (cEntries);
9432	com::SafeArray <BSTR> values (cEntries);
9433	com::SafeArray <ULONG64> timestamps (cEntries);
9434	com::SafeArray <BSTR> flags (cEntries);
9435	unsigned i = 0;
9436	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
9437	it != mHWData->mGuestProperties.end(); ++it)
9438	{
9439	char szFlags[MAX_FLAGS_LEN + 1];
9440	it->mName.cloneTo (&names[i]);
9441	it->mValue.cloneTo (&values[i]);
9442	timestamps[i] = it->mTimestamp;
9443	writeFlags (it->mFlags, szFlags);
9444	Bstr (szFlags).cloneTo (&flags[i]);
9445	++i;
9446	}
9447	names.detachTo (ComSafeArrayOutArg (aNames));
9448	values.detachTo (ComSafeArrayOutArg (aValues));
9449	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
9450	flags.detachTo (ComSafeArrayOutArg (aFlags));
9451	mHWData->mPropertyServiceActive = true;
9452	return S_OK;
9453	#else
9454	ReturnComNotImplemented();
9455	#endif
9456	}
9457
9458	STDMETHODIMP SessionMachine::PushGuestProperties (ComSafeArrayIn (IN_BSTR, aNames),
9459	ComSafeArrayIn (IN_BSTR, aValues),
9460	ComSafeArrayIn (ULONG64, aTimestamps),
9461	ComSafeArrayIn (IN_BSTR, aFlags))
9462	{
9463	LogFlowThisFunc (("\n"));
9464
9465	#ifdef VBOX_WITH_GUEST_PROPS
9466	using namespace guestProp;
9467
9468	AutoCaller autoCaller (this);
9469	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9470
9471	AutoWriteLock alock (this);
9472
9473	/* Temporarily reset the registered flag, so that our machine state
9474	* changes (i.e. mHWData.backup()) succeed. (isMutable() used in
9475	* all setters will return FALSE for a Machine instance if mRegistered
9476	* is TRUE). This is copied from registeredInit(), and may or may not be
9477	* the right way to handle this. */
9478	mData->mRegistered = FALSE;
9479	HRESULT rc = checkStateDependency (MutableStateDep);
9480	LogRel (("checkStateDependency (MutableStateDep) returned 0x%x\n", rc));
9481	CheckComRCReturnRC (rc);
9482
9483	// ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9484
9485	AssertReturn (!ComSafeArrayInIsNull (aNames), E_POINTER);
9486	AssertReturn (!ComSafeArrayInIsNull (aValues), E_POINTER);
9487	AssertReturn (!ComSafeArrayInIsNull (aTimestamps), E_POINTER);
9488	AssertReturn (!ComSafeArrayInIsNull (aFlags), E_POINTER);
9489
9490	com::SafeArray <IN_BSTR> names (ComSafeArrayInArg (aNames));
9491	com::SafeArray <IN_BSTR> values (ComSafeArrayInArg (aValues));
9492	com::SafeArray <ULONG64> timestamps (ComSafeArrayInArg (aTimestamps));
9493	com::SafeArray <IN_BSTR> flags (ComSafeArrayInArg (aFlags));
9494	DiscardSettings();
9495	mHWData.backup();
9496	mHWData->mGuestProperties.erase (mHWData->mGuestProperties.begin(),
9497	mHWData->mGuestProperties.end());
9498	for (unsigned i = 0; i < names.size(); ++i)
9499	{
9500	uint32_t fFlags = NILFLAG;
9501	validateFlags (Utf8Str (flags[i]).raw(), &fFlags);
9502	HWData::GuestProperty property = { names[i], values[i], timestamps[i], fFlags };
9503	mHWData->mGuestProperties.push_back (property);
9504	}
9505	mHWData->mPropertyServiceActive = false;
9506	alock.unlock();
9507	SaveSettings();
9508	/* Restore the mRegistered flag. */
9509	mData->mRegistered = TRUE;
9510	return S_OK;
9511	#else
9512	ReturnComNotImplemented();
9513	#endif
9514	}
9515
9516	STDMETHODIMP SessionMachine::PushGuestProperty (IN_BSTR aName, IN_BSTR aValue,
9517	ULONG64 aTimestamp, IN_BSTR aFlags)
9518	{
9519	LogFlowThisFunc (("\n"));
9520
9521	#ifdef VBOX_WITH_GUEST_PROPS
9522	using namespace guestProp;
9523
9524	CheckComArgNotNull (aName);
9525	if ((aValue != NULL) && (!VALID_PTR (aValue) \|\| !VALID_PTR (aFlags)))
9526	return E_POINTER; /* aValue can be NULL to indicate deletion */
9527
9528	Utf8Str utf8Name (aName);
9529	Utf8Str utf8Flags (aFlags);
9530	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
9531	if ( utf8Name.isNull()
9532	\|\| ((aFlags != NULL) && utf8Flags.isNull())
9533	\|\| utf8Patterns.isNull()
9534	)
9535	return E_OUTOFMEMORY;
9536
9537	uint32_t fFlags = NILFLAG;
9538	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags)))
9539	return E_INVALIDARG;
9540
9541	bool matchAll = false;
9542	if (utf8Patterns.length() == 0)
9543	matchAll = true;
9544
9545	AutoCaller autoCaller (this);
9546	CheckComRCReturnRC (autoCaller.rc());
9547
9548	AutoWriteLock alock (this);
9549
9550	HRESULT rc = checkStateDependency (MutableStateDep);
9551	CheckComRCReturnRC (rc);
9552
9553	mHWData.backup();
9554	for (HWData::GuestPropertyList::iterator iter = mHWData->mGuestProperties.begin();
9555	iter != mHWData->mGuestProperties.end(); ++iter)
9556	if (aName == iter->mName)
9557	{
9558	mHWData->mGuestProperties.erase (iter);
9559	break;
9560	}
9561	if (aValue != NULL)
9562	{
9563	HWData::GuestProperty property = { aName, aValue, aTimestamp, fFlags };
9564	mHWData->mGuestProperties.push_back (property);
9565	}
9566
9567	/* send a callback notification if appropriate */
9568	alock.leave();
9569	if ( matchAll
9570	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
9571	utf8Name.raw(), RTSTR_MAX, NULL)
9572	)
9573	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
9574
9575	return S_OK;
9576	#else
9577	ReturnComNotImplemented();
9578	#endif
9579	}
9580
9581	// public methods only for internal purposes
9582	/////////////////////////////////////////////////////////////////////////////
9583
9584	/**
9585	* Called from the client watcher thread to check for expected or unexpected
9586	* death of the client process that has a direct session to this machine.
9587	*
9588	* On Win32 and on OS/2, this method is called only when we've got the
9589	* mutex (i.e. the client has either died or terminated normally) so it always
9590	* returns @c true (the client is terminated, the session machine is
9591	* uninitialized).
9592	*
9593	* On other platforms, the method returns @c true if the client process has
9594	* terminated normally or abnormally and the session machine was uninitialized,
9595	* and @c false if the client process is still alive.
9596	*
9597	* @note Locks this object for writing.
9598	*/
9599	bool SessionMachine::checkForDeath()
9600	{
9601	Uninit::Reason reason;
9602	bool terminated = false;
9603
9604	/* Enclose autoCaller with a block because calling uninit() from under it
9605	* will deadlock. */
9606	{
9607	AutoCaller autoCaller (this);
9608	if (!autoCaller.isOk())
9609	{
9610	/* return true if not ready, to cause the client watcher to exclude
9611	* the corresponding session from watching */
9612	LogFlowThisFunc (("Already uninitialized!"));
9613	return true;
9614	}
9615
9616	AutoWriteLock alock (this);
9617
9618	/* Determine the reason of death: if the session state is Closing here,
9619	* everything is fine. Otherwise it means that the client did not call
9620	* OnSessionEnd() before it released the IPC semaphore. This may happen
9621	* either because the client process has abnormally terminated, or
9622	* because it simply forgot to call ISession::Close() before exiting. We
9623	* threat the latter also as an abnormal termination (see
9624	* Session::uninit() for details). */
9625	reason = mData->mSession.mState == SessionState_Closing ?
9626	Uninit::Normal :
9627	Uninit::Abnormal;
9628
9629	#if defined(RT_OS_WINDOWS)
9630
9631	AssertMsg (mIPCSem, ("semaphore must be created"));
9632
9633	/* release the IPC mutex */
9634	::ReleaseMutex (mIPCSem);
9635
9636	terminated = true;
9637
9638	#elif defined(RT_OS_OS2)
9639
9640	AssertMsg (mIPCSem, ("semaphore must be created"));
9641
9642	/* release the IPC mutex */
9643	::DosReleaseMutexSem (mIPCSem);
9644
9645	terminated = true;
9646
9647	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
9648
9649	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
9650
9651	int val = ::semctl (mIPCSem, 0, GETVAL);
9652	if (val > 0)
9653	{
9654	/* the semaphore is signaled, meaning the session is terminated */
9655	terminated = true;
9656	}
9657
9658	#else
9659	# error "Port me!"
9660	#endif
9661
9662	} /* AutoCaller block */
9663
9664	if (terminated)
9665	uninit (reason);
9666
9667	return terminated;
9668	}
9669
9670	/**
9671	* @note Locks this object for reading.
9672	*/
9673	HRESULT SessionMachine::onDVDDriveChange()
9674	{
9675	LogFlowThisFunc (("\n"));
9676
9677	AutoCaller autoCaller (this);
9678	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9679
9680	ComPtr <IInternalSessionControl> directControl;
9681	{
9682	AutoReadLock alock (this);
9683	directControl = mData->mSession.mDirectControl;
9684	}
9685
9686	/* ignore notifications sent after #OnSessionEnd() is called */
9687	if (!directControl)
9688	return S_OK;
9689
9690	return directControl->OnDVDDriveChange();
9691	}
9692
9693	/**
9694	* @note Locks this object for reading.
9695	*/
9696	HRESULT SessionMachine::onFloppyDriveChange()
9697	{
9698	LogFlowThisFunc (("\n"));
9699
9700	AutoCaller autoCaller (this);
9701	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9702
9703	ComPtr <IInternalSessionControl> directControl;
9704	{
9705	AutoReadLock alock (this);
9706	directControl = mData->mSession.mDirectControl;
9707	}
9708
9709	/* ignore notifications sent after #OnSessionEnd() is called */
9710	if (!directControl)
9711	return S_OK;
9712
9713	return directControl->OnFloppyDriveChange();
9714	}
9715
9716	/**
9717	* @note Locks this object for reading.
9718	*/
9719	HRESULT SessionMachine::onNetworkAdapterChange (INetworkAdapter *networkAdapter)
9720	{
9721	LogFlowThisFunc (("\n"));
9722
9723	AutoCaller autoCaller (this);
9724	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9725
9726	ComPtr <IInternalSessionControl> directControl;
9727	{
9728	AutoReadLock alock (this);
9729	directControl = mData->mSession.mDirectControl;
9730	}
9731
9732	/* ignore notifications sent after #OnSessionEnd() is called */
9733	if (!directControl)
9734	return S_OK;
9735
9736	return directControl->OnNetworkAdapterChange (networkAdapter);
9737	}
9738
9739	/**
9740	* @note Locks this object for reading.
9741	*/
9742	HRESULT SessionMachine::onSerialPortChange (ISerialPort *serialPort)
9743	{
9744	LogFlowThisFunc (("\n"));
9745
9746	AutoCaller autoCaller (this);
9747	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9748
9749	ComPtr <IInternalSessionControl> directControl;
9750	{
9751	AutoReadLock alock (this);
9752	directControl = mData->mSession.mDirectControl;
9753	}
9754
9755	/* ignore notifications sent after #OnSessionEnd() is called */
9756	if (!directControl)
9757	return S_OK;
9758
9759	return directControl->OnSerialPortChange (serialPort);
9760	}
9761
9762	/**
9763	* @note Locks this object for reading.
9764	*/
9765	HRESULT SessionMachine::onParallelPortChange (IParallelPort *parallelPort)
9766	{
9767	LogFlowThisFunc (("\n"));
9768
9769	AutoCaller autoCaller (this);
9770	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9771
9772	ComPtr <IInternalSessionControl> directControl;
9773	{
9774	AutoReadLock alock (this);
9775	directControl = mData->mSession.mDirectControl;
9776	}
9777
9778	/* ignore notifications sent after #OnSessionEnd() is called */
9779	if (!directControl)
9780	return S_OK;
9781
9782	return directControl->OnParallelPortChange (parallelPort);
9783	}
9784
9785	/**
9786	* @note Locks this object for reading.
9787	*/
9788	HRESULT SessionMachine::onStorageControllerChange ()
9789	{
9790	LogFlowThisFunc (("\n"));
9791
9792	AutoCaller autoCaller (this);
9793	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9794
9795	ComPtr <IInternalSessionControl> directControl;
9796	{
9797	AutoReadLock alock (this);
9798	directControl = mData->mSession.mDirectControl;
9799	}
9800
9801	/* ignore notifications sent after #OnSessionEnd() is called */
9802	if (!directControl)
9803	return S_OK;
9804
9805	return directControl->OnStorageControllerChange ();
9806	}
9807
9808	/**
9809	* @note Locks this object for reading.
9810	*/
9811	HRESULT SessionMachine::onVRDPServerChange()
9812	{
9813	LogFlowThisFunc (("\n"));
9814
9815	AutoCaller autoCaller (this);
9816	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9817
9818	ComPtr <IInternalSessionControl> directControl;
9819	{
9820	AutoReadLock alock (this);
9821	directControl = mData->mSession.mDirectControl;
9822	}
9823
9824	/* ignore notifications sent after #OnSessionEnd() is called */
9825	if (!directControl)
9826	return S_OK;
9827
9828	return directControl->OnVRDPServerChange();
9829	}
9830
9831	/**
9832	* @note Locks this object for reading.
9833	*/
9834	HRESULT SessionMachine::onUSBControllerChange()
9835	{
9836	LogFlowThisFunc (("\n"));
9837
9838	AutoCaller autoCaller (this);
9839	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9840
9841	ComPtr <IInternalSessionControl> directControl;
9842	{
9843	AutoReadLock alock (this);
9844	directControl = mData->mSession.mDirectControl;
9845	}
9846
9847	/* ignore notifications sent after #OnSessionEnd() is called */
9848	if (!directControl)
9849	return S_OK;
9850
9851	return directControl->OnUSBControllerChange();
9852	}
9853
9854	/**
9855	* @note Locks this object for reading.
9856	*/
9857	HRESULT SessionMachine::onSharedFolderChange()
9858	{
9859	LogFlowThisFunc (("\n"));
9860
9861	AutoCaller autoCaller (this);
9862	AssertComRCReturnRC (autoCaller.rc());
9863
9864	ComPtr <IInternalSessionControl> directControl;
9865	{
9866	AutoReadLock alock (this);
9867	directControl = mData->mSession.mDirectControl;
9868	}
9869
9870	/* ignore notifications sent after #OnSessionEnd() is called */
9871	if (!directControl)
9872	return S_OK;
9873
9874	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
9875	}
9876
9877	/**
9878	* Returns @c true if this machine's USB controller reports it has a matching
9879	* filter for the given USB device and @c false otherwise.
9880	*
9881	* @note Locks this object for reading.
9882	*/
9883	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr <HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
9884	{
9885	AutoCaller autoCaller (this);
9886	/* silently return if not ready -- this method may be called after the
9887	* direct machine session has been called */
9888	if (!autoCaller.isOk())
9889	return false;
9890
9891	AutoReadLock alock (this);
9892
9893	#ifdef VBOX_WITH_USB
9894	switch (mData->mMachineState)
9895	{
9896	case MachineState_Starting:
9897	case MachineState_Restoring:
9898	case MachineState_Paused:
9899	case MachineState_Running:
9900	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
9901	default: break;
9902	}
9903	#endif
9904	return false;
9905	}
9906
9907	/**
9908	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9909	*/
9910	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
9911	IVirtualBoxErrorInfo *aError,
9912	ULONG aMaskedIfs)
9913	{
9914	LogFlowThisFunc (("\n"));
9915
9916	AutoCaller autoCaller (this);
9917
9918	/* This notification may happen after the machine object has been
9919	* uninitialized (the session was closed), so don't assert. */
9920	CheckComRCReturnRC (autoCaller.rc());
9921
9922	ComPtr <IInternalSessionControl> directControl;
9923	{
9924	AutoReadLock alock (this);
9925	directControl = mData->mSession.mDirectControl;
9926	}
9927
9928	/* fail on notifications sent after #OnSessionEnd() is called, it is
9929	* expected by the caller */
9930	if (!directControl)
9931	return E_FAIL;
9932
9933	/* No locks should be held at this point. */
9934	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9935	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9936
9937	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
9938	}
9939
9940	/**
9941	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9942	*/
9943	HRESULT SessionMachine::onUSBDeviceDetach (IN_GUID aId,
9944	IVirtualBoxErrorInfo *aError)
9945	{
9946	LogFlowThisFunc (("\n"));
9947
9948	AutoCaller autoCaller (this);
9949
9950	/* This notification may happen after the machine object has been
9951	* uninitialized (the session was closed), so don't assert. */
9952	CheckComRCReturnRC (autoCaller.rc());
9953
9954	ComPtr <IInternalSessionControl> directControl;
9955	{
9956	AutoReadLock alock (this);
9957	directControl = mData->mSession.mDirectControl;
9958	}
9959
9960	/* fail on notifications sent after #OnSessionEnd() is called, it is
9961	* expected by the caller */
9962	if (!directControl)
9963	return E_FAIL;
9964
9965	/* No locks should be held at this point. */
9966	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9967	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9968
9969	return directControl->OnUSBDeviceDetach (aId, aError);
9970	}
9971
9972	// protected methods
9973	/////////////////////////////////////////////////////////////////////////////
9974
9975	/**
9976	* Helper method to finalize saving the state.
9977	*
9978	* @note Must be called from under this object's lock.
9979	*
9980	* @param aSuccess TRUE if the snapshot has been taken successfully
9981	*
9982	* @note Locks mParent + this objects for writing.
9983	*/
9984	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
9985	{
9986	LogFlowThisFuncEnter();
9987
9988	AutoCaller autoCaller (this);
9989	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9990
9991	/* saveSettings() needs mParent lock */
9992	AutoMultiWriteLock2 alock (mParent, this);
9993
9994	HRESULT rc = S_OK;
9995
9996	if (aSuccess)
9997	{
9998	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
9999
10000	/* save all VM settings */
10001	rc = saveSettings();
10002	}
10003	else
10004	{
10005	/* delete the saved state file (it might have been already created) */
10006	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
10007	}
10008
10009	/* remove the completed progress object */
10010	mParent->removeProgress (mSnapshotData.mProgressId);
10011
10012	/* clear out the temporary saved state data */
10013	mSnapshotData.mLastState = MachineState_Null;
10014	mSnapshotData.mProgressId.clear();
10015	mSnapshotData.mStateFilePath.setNull();
10016
10017	LogFlowThisFuncLeave();
10018	return rc;
10019	}
10020
10021	/**
10022	* Helper method to finalize taking a snapshot. Gets called to finalize the
10023	* "take snapshot" procedure.
10024	*
10025	* Expected to be called after completing all the tasks related to taking the
10026	* snapshot, either successfully or unsuccessfilly.
10027	*
10028	* @param aSuccess TRUE if the snapshot has been taken successfully.
10029	*
10030	* @note Locks this objects for writing.
10031	*/
10032	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
10033	{
10034	LogFlowThisFuncEnter();
10035
10036	AutoCaller autoCaller (this);
10037	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10038
10039	AutoWriteLock alock (this);
10040
10041	AssertReturn (!mSnapshotData.mSnapshot.isNull(), E_FAIL);
10042
10043	MultiResult rc (S_OK);
10044
10045	if (aSuccess)
10046	{
10047	/* the server progress must be completed on success */
10048	Assert (mSnapshotData.mServerProgress->completed());
10049
10050	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
10051
10052	/* memorize the first snapshot if necessary */
10053	if (!mData->mFirstSnapshot)
10054	mData->mFirstSnapshot = mData->mCurrentSnapshot;
10055
10056	int opFlags = SaveSS_AddOp \| SaveSS_CurrentId;
10057	if (!Global::IsOnline (mSnapshotData.mLastState))
10058	{
10059	/* the machine was powered off or saved when taking a snapshot, so
10060	* reset the mCurrentStateModified flag */
10061	mData->mCurrentStateModified = FALSE;
10062	opFlags \|= SaveSS_CurStateModified;
10063	}
10064
10065	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
10066	}
10067
10068	if (aSuccess && SUCCEEDED (rc))
10069	{
10070	bool online = Global::IsOnline (mSnapshotData.mLastState);
10071
10072	/* associate old hard disks with the snapshot and do locking/unlocking*/
10073	fixupHardDisks(true /* aCommit */, online);
10074
10075	/* inform callbacks */
10076	mParent->onSnapshotTaken (mData->mUuid,
10077	mSnapshotData.mSnapshot->data().mId);
10078	}
10079	else
10080	{
10081	/* wait for the completion of the server progress (diff VDI creation) */
10082	/// @todo (dmik) later, we will definitely want to cancel it instead
10083	// (when the cancel function is implemented)
10084	mSnapshotData.mServerProgress->WaitForCompletion (-1);
10085
10086	/* delete all differencing hard disks created (this will also attach
10087	* their parents back by rolling back mHDData) */
10088	fixupHardDisks(false /* aCommit */);
10089
10090	/* delete the saved state file (it might have been already created) */
10091	if (mSnapshotData.mSnapshot->stateFilePath())
10092	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
10093
10094	mSnapshotData.mSnapshot->uninit();
10095	}
10096
10097	/* clear out the snapshot data */
10098	mSnapshotData.mLastState = MachineState_Null;
10099	mSnapshotData.mSnapshot.setNull();
10100	mSnapshotData.mServerProgress.setNull();
10101
10102	/* uninitialize the combined progress (to remove it from the VBox collection) */
10103	if (!mSnapshotData.mCombinedProgress.isNull())
10104	{
10105	mSnapshotData.mCombinedProgress->uninit();
10106	mSnapshotData.mCombinedProgress.setNull();
10107	}
10108
10109	LogFlowThisFuncLeave();
10110	return rc;
10111	}
10112
10113	/**
10114	* Take snapshot task handler. Must be called only by
10115	* TakeSnapshotTask::handler()!
10116	*
10117	* The sole purpose of this task is to asynchronously create differencing VDIs
10118	* and copy the saved state file (when necessary). The VM process will wait for
10119	* this task to complete using the mSnapshotData.mServerProgress returned to it.
10120	*
10121	* @note Locks this object for writing.
10122	*/
10123	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask & /* aTask */)
10124	{
10125	LogFlowThisFuncEnter();
10126
10127	AutoCaller autoCaller (this);
10128
10129	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10130	if (!autoCaller.isOk())
10131	{
10132	/* we might have been uninitialized because the session was accidentally
10133	* closed by the client, so don't assert */
10134	LogFlowThisFuncLeave();
10135	return;
10136	}
10137
10138	AutoWriteLock alock (this);
10139
10140	HRESULT rc = S_OK;
10141
10142	bool online = Global::IsOnline (mSnapshotData.mLastState);
10143
10144	LogFlowThisFunc (("Creating differencing hard disks (online=%d)...\n",
10145	online));
10146
10147	mHDData.backup();
10148
10149	/* create new differencing hard disks and attach them to this machine */
10150	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10151	mSnapshotData.mServerProgress,
10152	online);
10153
10154	if (SUCCEEDED (rc) && mSnapshotData.mLastState == MachineState_Saved)
10155	{
10156	Utf8Str stateFrom = mSSData->mStateFilePath;
10157	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
10158
10159	LogFlowThisFunc (("Copying the execution state from '%s' to '%s'...\n",
10160	stateFrom.raw(), stateTo.raw()));
10161
10162	mSnapshotData.mServerProgress->setNextOperation(Bstr(tr("Copying the execution state")),
10163	1); // weight
10164
10165	/* Leave the lock before a lengthy operation (mMachineState is
10166	* MachineState_Saving here) */
10167
10168	alock.leave();
10169
10170	/* copy the state file */
10171	int vrc = RTFileCopyEx (stateFrom, stateTo, 0, progressCallback,
10172	static_cast <Progress *> (mSnapshotData.mServerProgress));
10173
10174	alock.enter();
10175
10176	if (RT_FAILURE (vrc))
10177	rc = setError (E_FAIL,
10178	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10179	stateFrom.raw(), stateTo.raw(), vrc);
10180	}
10181
10182	/* we have to call endTakingSnapshot() ourselves if the snapshot was taken
10183	* offline because the VM process will not do it in this case
10184	*/
10185	if (!online)
10186	{
10187	LogFlowThisFunc (("Finalizing the taken snapshot (rc=%Rhrc)...\n", rc));
10188
10189	{
10190	ErrorInfoKeeper eik;
10191
10192	setMachineState (mSnapshotData.mLastState);
10193	updateMachineStateOnClient();
10194	}
10195
10196	/* finalize the progress after setting the state, for consistency */
10197	mSnapshotData.mServerProgress->notifyComplete (rc);
10198
10199	endTakingSnapshot (SUCCEEDED (rc));
10200	}
10201	else
10202	{
10203	mSnapshotData.mServerProgress->notifyComplete (rc);
10204	}
10205
10206	LogFlowThisFuncLeave();
10207	}
10208
10209	/**
10210	* Helper struct for SessionMachine::discardSnapshotHandler().
10211	*/
10212	struct HardDiskDiscardRec
10213	{
10214	HardDiskDiscardRec() : chain (NULL) {}
10215
10216	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10217	HardDisk::MergeChain *aChain = NULL)
10218	: hd (aHd), chain (aChain) {}
10219
10220	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10221	HardDisk::MergeChain *aChain,
10222	const ComObjPtr<HardDisk> &aReplaceHd,
10223	const ComObjPtr<HardDiskAttachment> &aReplaceHda,
10224	const Guid &aSnapshotId)
10225	: hd (aHd), chain (aChain)
10226	, replaceHd (aReplaceHd), replaceHda (aReplaceHda)
10227	, snapshotId (aSnapshotId) {}
10228
10229	ComObjPtr<HardDisk> hd;
10230	HardDisk::MergeChain *chain;
10231	/* these are for the replace hard disk case: */
10232	ComObjPtr<HardDisk> replaceHd;
10233	ComObjPtr<HardDiskAttachment> replaceHda;
10234	Guid snapshotId;
10235	};
10236
10237	typedef std::list <HardDiskDiscardRec> HardDiskDiscardRecList;
10238
10239	/**
10240	* Discard snapshot task handler. Must be called only by
10241	* DiscardSnapshotTask::handler()!
10242	*
10243	* When aTask.subTask is true, the associated progress object is left
10244	* uncompleted on success. On failure, the progress is marked as completed
10245	* regardless of this parameter.
10246	*
10247	* @note Locks mParent + this + child objects for writing!
10248	*/
10249	void SessionMachine::discardSnapshotHandler (DiscardSnapshotTask &aTask)
10250	{
10251	LogFlowThisFuncEnter();
10252
10253	AutoCaller autoCaller (this);
10254
10255	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10256	if (!autoCaller.isOk())
10257	{
10258	/* we might have been uninitialized because the session was accidentally
10259	* closed by the client, so don't assert */
10260	aTask.progress->notifyComplete (
10261	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10262	tr ("The session has been accidentally closed"));
10263
10264	LogFlowThisFuncLeave();
10265	return;
10266	}
10267
10268	/* saveSettings() needs mParent lock */
10269	AutoWriteLock vboxLock (mParent);
10270
10271	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10272	* provide an AutoWriteLock argument that lets create a non-locking
10273	* instance */
10274	vboxLock.unlock();
10275
10276	/* Preseve the {parent, child} lock order for this and snapshot stuff */
10277	AutoMultiWriteLock3 alock (this->lockHandle(),
10278	aTask.snapshot->lockHandle(),
10279	aTask.snapshot->childrenLock());
10280
10281	ComObjPtr <SnapshotMachine> sm = aTask.snapshot->data().mMachine;
10282	/* no need to lock the snapshot machine since it is const by definiton */
10283
10284	HRESULT rc = S_OK;
10285
10286	/* save the snapshot ID (for callbacks) */
10287	Guid snapshotId = aTask.snapshot->data().mId;
10288
10289	HardDiskDiscardRecList toDiscard;
10290
10291	bool settingsChanged = false;
10292
10293	try
10294	{
10295	/* first pass: */
10296	LogFlowThisFunc (("1: Checking hard disk merge prerequisites...\n"));
10297
10298	for (HDData::AttachmentList::const_iterator it =
10299	sm->mHDData->mAttachments.begin();
10300	it != sm->mHDData->mAttachments.end();
10301	++ it)
10302	{
10303	ComObjPtr<HardDiskAttachment> hda = *it;
10304	ComObjPtr<HardDisk> hd = hda->hardDisk();
10305
10306	/* HardDisk::prepareDiscard() reqiuires a write lock */
10307	AutoWriteLock hdLock (hd);
10308
10309	if (hd->type() != HardDiskType_Normal)
10310	{
10311	/* skip writethrough hard disks */
10312
10313	Assert (hd->type() == HardDiskType_Writethrough);
10314
10315	rc = aTask.progress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
10316	hd->root()->name().raw()),
10317	1); // weight
10318	CheckComRCThrowRC (rc);
10319
10320	continue;
10321	}
10322
10323	HardDisk::MergeChain *chain = NULL;
10324
10325	/* needs to be discarded (merged with the child if any), check
10326	* prerequisites */
10327	rc = hd->prepareDiscard (chain);
10328	CheckComRCThrowRC (rc);
10329
10330	if (hd->parent().isNull() && chain != NULL)
10331	{
10332	/* it's a base hard disk so it will be a backward merge of its
10333	* only child to it (prepareDiscard() does necessary checks). We
10334	* need then to update the attachment that refers to the child
10335	* to refer to the parent insead. Don't forget to detach the
10336	* child (otherwise mergeTo() called by discard() will assert
10337	* because it will be going to delete the child) */
10338
10339	/* The below assert would be nice but I don't want to move
10340	* HardDisk::MergeChain to the header just for that
10341	* Assert (!chain->isForward()); */
10342
10343	Assert (hd->children().size() == 1);
10344
10345	ComObjPtr<HardDisk> replaceHd = hd->children().front();
10346
10347	Assert (replaceHd->backRefs().front().machineId == mData->mUuid);
10348	Assert (replaceHd->backRefs().front().snapshotIds.size() <= 1);
10349
10350	Guid snapshotId;
10351	if (replaceHd->backRefs().front().snapshotIds.size() == 1)
10352	snapshotId = replaceHd->backRefs().front().snapshotIds.front();
10353
10354	HRESULT rc2 = S_OK;
10355
10356	/* adjust back references */
10357	rc2 = replaceHd->detachFrom (mData->mUuid, snapshotId);
10358	AssertComRC (rc2);
10359
10360	rc2 = hd->attachTo (mData->mUuid, snapshotId);
10361	AssertComRC (rc2);
10362
10363	/* replace the hard disk in the attachment object */
10364	HDData::AttachmentList::iterator it;
10365	if (snapshotId.isEmpty())
10366	{
10367	/* in current state */
10368	it = std::find_if (mHDData->mAttachments.begin(),
10369	mHDData->mAttachments.end(),
10370	HardDiskAttachment::RefersTo (replaceHd));
10371	AssertBreak (it != mHDData->mAttachments.end());
10372	}
10373	else
10374	{
10375	/* in snapshot */
10376	ComObjPtr <Snapshot> snapshot;
10377	rc2 = findSnapshot (snapshotId, snapshot);
10378	AssertComRC (rc2);
10379
10380	/* don't lock the snapshot; cannot be modified outside */
10381	HDData::AttachmentList &snapAtts =
10382	snapshot->data().mMachine->mHDData->mAttachments;
10383	it = std::find_if (snapAtts.begin(),
10384	snapAtts.end(),
10385	HardDiskAttachment::RefersTo (replaceHd));
10386	AssertBreak (it != snapAtts.end());
10387	}
10388
10389	AutoWriteLock attLock (*it);
10390	(it)->updateHardDisk (hd, false / aImplicit */);
10391
10392	toDiscard.push_back (HardDiskDiscardRec (hd, chain, replaceHd,
10393	*it, snapshotId));
10394	continue;
10395	}
10396
10397	toDiscard.push_back (HardDiskDiscardRec (hd, chain));
10398	}
10399
10400	/* Now we checked that we can successfully merge all normal hard disks
10401	* (unless a runtime error like end-of-disc happens). Prior to
10402	* performing the actual merge, we want to discard the snapshot itself
10403	* and remove it from the XML file to make sure that a possible merge
10404	* ruintime error will not make this snapshot inconsistent because of
10405	* the partially merged or corrupted hard disks */
10406
10407	/* second pass: */
10408	LogFlowThisFunc (("2: Discarding snapshot...\n"));
10409
10410	{
10411	/* for now, the snapshot must have only one child when discarded,
10412	* or no children at all */
10413	ComAssertThrow (aTask.snapshot->children().size() <= 1, E_FAIL);
10414
10415	ComObjPtr <Snapshot> parentSnapshot = aTask.snapshot->parent();
10416
10417	/// @todo (dmik):
10418	// when we introduce clones later, discarding the snapshot
10419	// will affect the current and first snapshots of clones, if they are
10420	// direct children of this snapshot. So we will need to lock machines
10421	// associated with child snapshots as well and update mCurrentSnapshot
10422	// and/or mFirstSnapshot fields.
10423
10424	if (aTask.snapshot == mData->mCurrentSnapshot)
10425	{
10426	/* currently, the parent snapshot must refer to the same machine */
10427	/// @todo NEWMEDIA not really clear why
10428	ComAssertThrow (
10429	!parentSnapshot \|\|
10430	parentSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10431	E_FAIL);
10432	mData->mCurrentSnapshot = parentSnapshot;
10433
10434	/* we've changed the base of the current state so mark it as
10435	* modified as it no longer guaranteed to be its copy */
10436	mData->mCurrentStateModified = TRUE;
10437	}
10438
10439	if (aTask.snapshot == mData->mFirstSnapshot)
10440	{
10441	if (aTask.snapshot->children().size() == 1)
10442	{
10443	ComObjPtr <Snapshot> childSnapshot =
10444	aTask.snapshot->children().front();
10445	ComAssertThrow (
10446	childSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10447	E_FAIL);
10448	mData->mFirstSnapshot = childSnapshot;
10449	}
10450	else
10451	mData->mFirstSnapshot.setNull();
10452	}
10453
10454	Bstr stateFilePath = aTask.snapshot->stateFilePath();
10455
10456	/* Note that discarding the snapshot will deassociate it from the
10457	* hard disks which will allow the merge+delete operation for them*/
10458	aTask.snapshot->discard();
10459
10460	rc = saveSnapshotSettings (parentSnapshot, SaveSS_UpdateAllOp \|
10461	SaveSS_CurrentId \|
10462	SaveSS_CurStateModified);
10463	CheckComRCThrowRC (rc);
10464
10465	/// @todo (dmik)
10466	// if we implement some warning mechanism later, we'll have
10467	// to return a warning if the state file path cannot be deleted
10468	if (stateFilePath)
10469	{
10470	aTask.progress->setNextOperation(Bstr(tr("Discarding the execution state")),
10471	1); // weight
10472
10473	RTFileDelete (Utf8Str (stateFilePath));
10474	}
10475
10476	/// @todo NEWMEDIA to provide a good level of fauilt tolerance, we
10477	/// should restore the shapshot in the snapshot tree if
10478	/// saveSnapshotSettings fails. Actually, we may call
10479	/// #saveSnapshotSettings() with a special flag that will tell it to
10480	/// skip the given snapshot as if it would have been discarded and
10481	/// only actually discard it if the save operation succeeds.
10482	}
10483
10484	/* here we come when we've irrevesibly discarded the snapshot which
10485	* means that the VM settigns (our relevant changes to mData) need to be
10486	* saved too */
10487	/// @todo NEWMEDIA maybe save everything in one operation in place of
10488	/// saveSnapshotSettings() above
10489	settingsChanged = true;
10490
10491	/* third pass: */
10492	LogFlowThisFunc (("3: Performing actual hard disk merging...\n"));
10493
10494	/* leave the locks before the potentially lengthy operation */
10495	alock.leave();
10496
10497	/// @todo NEWMEDIA turn the following errors into warnings because the
10498	/// snapshot itself has been already deleted (and interpret these
10499	/// warnings properly on the GUI side)
10500
10501	for (HardDiskDiscardRecList::iterator it = toDiscard.begin();
10502	it != toDiscard.end();)
10503	{
10504	rc = it->hd->discard (aTask.progress, it->chain);
10505	CheckComRCBreakRC (rc);
10506
10507	/* prevent from calling cancelDiscard() */
10508	it = toDiscard.erase (it);
10509	}
10510
10511	alock.enter();
10512
10513	CheckComRCThrowRC (rc);
10514	}
10515	catch (HRESULT aRC) { rc = aRC; }
10516
10517	if FAILED (rc)
10518	{
10519	HRESULT rc2 = S_OK;
10520
10521	/* un-prepare the remaining hard disks */
10522	for (HardDiskDiscardRecList::const_iterator it = toDiscard.begin();
10523	it != toDiscard.end(); ++ it)
10524	{
10525	it->hd->cancelDiscard (it->chain);
10526
10527	if (!it->replaceHd.isNull())
10528	{
10529	/* undo hard disk replacement */
10530
10531	rc2 = it->replaceHd->attachTo (mData->mUuid, it->snapshotId);
10532	AssertComRC (rc2);
10533
10534	rc2 = it->hd->detachFrom (mData->mUuid, it->snapshotId);
10535	AssertComRC (rc2);
10536
10537	AutoWriteLock attLock (it->replaceHda);
10538	it->replaceHda->updateHardDisk (it->replaceHd, false /* aImplicit */);
10539	}
10540	}
10541	}
10542
10543	if (!aTask.subTask \|\| FAILED (rc))
10544	{
10545	if (!aTask.subTask)
10546	{
10547	/* saveSettings() below needs a VirtualBox write lock and we need to
10548	* leave this object's lock to do this to follow the {parent-child}
10549	* locking rule. This is the last chance to do that while we are
10550	* still in a protective state which allows us to temporarily leave
10551	* the lock */
10552	alock.unlock();
10553	vboxLock.lock();
10554	alock.lock();
10555
10556	/* preserve existing error info */
10557	ErrorInfoKeeper eik;
10558
10559	/* restore the machine state */
10560	setMachineState (aTask.state);
10561	updateMachineStateOnClient();
10562
10563	if (settingsChanged)
10564	saveSettings (SaveS_InformCallbacksAnyway);
10565	}
10566
10567	/* set the result (this will try to fetch current error info on failure) */
10568	aTask.progress->notifyComplete (rc);
10569	}
10570
10571	if (SUCCEEDED (rc))
10572	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
10573
10574	LogFlowThisFunc (("Done discarding snapshot (rc=%08X)\n", rc));
10575	LogFlowThisFuncLeave();
10576	}
10577
10578	/**
10579	* Discard current state task handler. Must be called only by
10580	* DiscardCurrentStateTask::handler()!
10581	*
10582	* @note Locks mParent + this object for writing.
10583	*/
10584	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
10585	{
10586	LogFlowThisFuncEnter();
10587
10588	AutoCaller autoCaller (this);
10589
10590	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10591	if (!autoCaller.isOk())
10592	{
10593	/* we might have been uninitialized because the session was accidentally
10594	* closed by the client, so don't assert */
10595	aTask.progress->notifyComplete (
10596	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10597	tr ("The session has been accidentally closed"));
10598
10599	LogFlowThisFuncLeave();
10600	return;
10601	}
10602
10603	/* saveSettings() needs mParent lock */
10604	AutoWriteLock vboxLock (mParent);
10605
10606	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10607	* provide an AutoWriteLock argument that lets create a non-locking
10608	* instance */
10609	vboxLock.unlock();
10610
10611	AutoWriteLock alock (this);
10612
10613	/* discard all current changes to mUserData (name, OSType etc.) (note that
10614	* the machine is powered off, so there is no need to inform the direct
10615	* session) */
10616	if (isModified())
10617	rollback (false /* aNotify */);
10618
10619	HRESULT rc = S_OK;
10620
10621	bool errorInSubtask = false;
10622	bool stateRestored = false;
10623
10624	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
10625
10626	try
10627	{
10628	/* discard the saved state file if the machine was Saved prior to this
10629	* operation */
10630	if (aTask.state == MachineState_Saved)
10631	{
10632	Assert (!mSSData->mStateFilePath.isEmpty());
10633	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10634	mSSData->mStateFilePath.setNull();
10635	aTask.modifyLastState (MachineState_PoweredOff);
10636	rc = saveStateSettings (SaveSTS_StateFilePath);
10637	CheckComRCThrowRC (rc);
10638	}
10639
10640	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
10641	{
10642	/* the "discard current snapshot and state" task is in action, the
10643	* current snapshot is not the last one. Discard the current
10644	* snapshot first */
10645
10646	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10647	subTask.subTask = true;
10648	discardSnapshotHandler (subTask);
10649
10650	AutoCaller progressCaller (aTask.progress);
10651	AutoReadLock progressLock (aTask.progress);
10652	if (aTask.progress->completed())
10653	{
10654	/* the progress can be completed by a subtask only if there was
10655	* a failure */
10656	rc = aTask.progress->resultCode();
10657	Assert (FAILED (rc));
10658	errorInSubtask = true;
10659	throw rc;
10660	}
10661	}
10662
10663	RTTIMESPEC snapshotTimeStamp;
10664	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
10665
10666	{
10667	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
10668	AutoReadLock snapshotLock (curSnapshot);
10669
10670	/* remember the timestamp of the snapshot we're restoring from */
10671	snapshotTimeStamp = curSnapshot->data().mTimeStamp;
10672
10673	/* copy all hardware data from the current snapshot */
10674	copyFrom (curSnapshot->data().mMachine);
10675
10676	LogFlowThisFunc (("Restoring hard disks from the snapshot...\n"));
10677
10678	/* restore the attachmends from the snapshot */
10679	mHDData.backup();
10680	mHDData->mAttachments =
10681	curSnapshot->data().mMachine->mHDData->mAttachments;
10682
10683	/* leave the locks before the potentially lengthy operation */
10684	snapshotLock.unlock();
10685	alock.leave();
10686
10687	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10688	aTask.progress,
10689	false /* aOnline */);
10690
10691	alock.enter();
10692	snapshotLock.lock();
10693
10694	CheckComRCThrowRC (rc);
10695
10696	/* Note: on success, current (old) hard disks will be
10697	* deassociated/deleted on #commit() called from #saveSettings() at
10698	* the end. On failure, newly created implicit diffs will be
10699	* deleted by #rollback() at the end. */
10700
10701	/* should not have a saved state file associated at this point */
10702	Assert (mSSData->mStateFilePath.isNull());
10703
10704	if (curSnapshot->stateFilePath())
10705	{
10706	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
10707
10708	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
10709	mUserData->mSnapshotFolderFull.raw(),
10710	RTPATH_DELIMITER, mData->mUuid.raw());
10711
10712	LogFlowThisFunc (("Copying saved state file from '%s' to '%s'...\n",
10713	snapStateFilePath.raw(), stateFilePath.raw()));
10714
10715	aTask.progress->setNextOperation(Bstr(tr("Restoring the execution state")),
10716	1); // weight
10717
10718	/* leave the lock before the potentially lengthy operation */
10719	snapshotLock.unlock();
10720	alock.leave();
10721
10722	/* copy the state file */
10723	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
10724	0, progressCallback, aTask.progress);
10725
10726	alock.enter();
10727	snapshotLock.lock();
10728
10729	if (RT_SUCCESS (vrc))
10730	{
10731	mSSData->mStateFilePath = stateFilePath;
10732	}
10733	else
10734	{
10735	throw setError (E_FAIL,
10736	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10737	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
10738	}
10739	}
10740	}
10741
10742	/* grab differencing hard disks from the old attachments that will
10743	* become unused and need to be auto-deleted */
10744
10745	std::list< ComObjPtr<HardDisk> > diffs;
10746
10747	for (HDData::AttachmentList::const_iterator
10748	it = mHDData.backedUpData()->mAttachments.begin();
10749	it != mHDData.backedUpData()->mAttachments.end(); ++ it)
10750	{
10751	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
10752
10753	/* while the hard disk is attached, the number of children or the
10754	* parent cannot change, so no lock */
10755	if (!hd->parent().isNull() && hd->children().size() == 0)
10756	diffs.push_back (hd);
10757	}
10758
10759	int saveFlags = 0;
10760
10761	if (aTask.discardCurrentSnapshot && isLastSnapshot)
10762	{
10763	/* commit changes to have unused diffs deassociated from this
10764	* machine before deletion (see below) */
10765	commit();
10766
10767	/* delete the unused diffs now (and uninit them) because discard
10768	* may fail otherwise (too many children of the hard disk to be
10769	* discarded) */
10770	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10771	it = diffs.begin(); it != diffs.end(); ++ it)
10772	{
10773	/// @todo for now, we ignore errors since we've already
10774	/// and therefore cannot fail. Later, we may want to report a
10775	/// warning through the Progress object
10776	HRESULT rc2 = (*it)->deleteStorageAndWait();
10777	if (SUCCEEDED (rc2))
10778	(*it)->uninit();
10779	}
10780
10781	/* prevent further deletion */
10782	diffs.clear();
10783
10784	/* discard the current snapshot and state task is in action, the
10785	* current snapshot is the last one. Discard the current snapshot
10786	* after discarding the current state. */
10787
10788	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10789	subTask.subTask = true;
10790	discardSnapshotHandler (subTask);
10791
10792	AutoCaller progressCaller (aTask.progress);
10793	AutoReadLock progressLock (aTask.progress);
10794	if (aTask.progress->completed())
10795	{
10796	/* the progress can be completed by a subtask only if there
10797	* was a failure */
10798	rc = aTask.progress->resultCode();
10799	Assert (FAILED (rc));
10800	errorInSubtask = true;
10801	}
10802
10803	/* we've committed already, so inform callbacks anyway to ensure
10804	* they don't miss some change */
10805	/// @todo NEWMEDIA check if we need this informCallbacks at all
10806	/// after updating discardCurrentSnapshot functionality
10807	saveFlags \|= SaveS_InformCallbacksAnyway;
10808	}
10809
10810	/* @todo saveSettings() below needs a VirtualBox write lock and we need
10811	* to leave this object's lock to do this to follow the {parent-child}
10812	* locking rule. This is the last chance to do that while we are still
10813	* in a protective state which allows us to temporarily leave the lock*/
10814	alock.unlock();
10815	vboxLock.lock();
10816	alock.lock();
10817
10818	/* we have already discarded the current state, so set the execution
10819	* state accordingly no matter of the discard snapshot result */
10820	if (mSSData->mStateFilePath)
10821	setMachineState (MachineState_Saved);
10822	else
10823	setMachineState (MachineState_PoweredOff);
10824
10825	updateMachineStateOnClient();
10826	stateRestored = true;
10827
10828	/* assign the timestamp from the snapshot */
10829	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
10830	mData->mLastStateChange = snapshotTimeStamp;
10831
10832	/* save all settings, reset the modified flag and commit. Note that we
10833	* do so even if the subtask failed (errorInSubtask=true) because we've
10834	* already committed machine data and deleted old diffs before
10835	* discarding the current snapshot so there is no way to rollback */
10836	HRESULT rc2 = saveSettings (SaveS_ResetCurStateModified \| saveFlags);
10837
10838	/// @todo NEWMEDIA return multiple errors
10839	if (errorInSubtask)
10840	throw rc;
10841
10842	rc = rc2;
10843
10844	if (SUCCEEDED (rc))
10845	{
10846	/* now, delete the unused diffs (only on success!) and uninit them*/
10847	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10848	it = diffs.begin(); it != diffs.end(); ++ it)
10849	{
10850	/// @todo for now, we ignore errors since we've already
10851	/// discarded and therefore cannot fail. Later, we may want to
10852	/// report a warning through the Progress object
10853	HRESULT rc2 = (*it)->deleteStorageAndWait();
10854	if (SUCCEEDED (rc2))
10855	(*it)->uninit();
10856	}
10857	}
10858	}
10859	catch (HRESULT aRC) { rc = aRC; }
10860
10861	if (FAILED (rc))
10862	{
10863	/* preserve existing error info */
10864	ErrorInfoKeeper eik;
10865
10866	if (!errorInSubtask)
10867	{
10868	/* undo all changes on failure unless the subtask has done so */
10869	rollback (false /* aNotify */);
10870	}
10871
10872	if (!stateRestored)
10873	{
10874	/* restore the machine state */
10875	setMachineState (aTask.state);
10876	updateMachineStateOnClient();
10877	}
10878	}
10879
10880	if (!errorInSubtask)
10881	{
10882	/* set the result (this will try to fetch current error info on failure) */
10883	aTask.progress->notifyComplete (rc);
10884	}
10885
10886	if (SUCCEEDED (rc))
10887	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
10888
10889	LogFlowThisFunc (("Done discarding current state (rc=%08X)\n", rc));
10890
10891	LogFlowThisFuncLeave();
10892	}
10893
10894	/**
10895	* Locks the attached media.
10896	*
10897	* All attached hard disks and DVD/floppy are locked for writing. Parents of
10898	* attached hard disks (if any) are locked for reading.
10899	*
10900	* This method also performs accessibility check of all media it locks: if some
10901	* media is inaccessible, the method will return a failure and a bunch of
10902	* extended error info objects per each inaccessible medium.
10903	*
10904	* Note that this method is atomic: if it returns a success, all media are
10905	* locked as described above; on failure no media is locked at all (all
10906	* succeeded individual locks will be undone).
10907	*
10908	* This method is intended to be called when the machine is in Starting or
10909	* Restoring state and asserts otherwise.
10910	*
10911	* The locks made by this method must be undone by calling #unlockMedia() when
10912	* no more needed.
10913	*/
10914	HRESULT SessionMachine::lockMedia()
10915	{
10916	AutoCaller autoCaller (this);
10917	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10918
10919	AutoWriteLock alock (this);
10920
10921	AssertReturn (mData->mMachineState == MachineState_Starting \|\|
10922	mData->mMachineState == MachineState_Restoring, E_FAIL);
10923
10924	typedef std::list <ComPtr <IMedium> > MediaList;
10925	MediaList mediaToCheck;
10926	MediaState_T mediaState;
10927
10928	try
10929	{
10930	HRESULT rc = S_OK;
10931
10932	/* lock hard disks */
10933	for (HDData::AttachmentList::const_iterator it =
10934	mHDData->mAttachments.begin();
10935	it != mHDData->mAttachments.end(); ++ it)
10936	{
10937	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
10938
10939	bool first = true;
10940
10941	/** @todo split out the media locking, and put it into
10942	* HardDiskImpl.cpp, as it needs this functionality too. */
10943	while (!hd.isNull())
10944	{
10945	if (first)
10946	{
10947	rc = hd->LockWrite (&mediaState);
10948	CheckComRCThrowRC (rc);
10949
10950	mData->mSession.mLockedMedia.push_back (
10951	Data::Session::LockedMedia::value_type (
10952	ComPtr <IHardDisk> (hd), true));
10953
10954	first = false;
10955	}
10956	else
10957	{
10958	rc = hd->LockRead (&mediaState);
10959	CheckComRCThrowRC (rc);
10960
10961	mData->mSession.mLockedMedia.push_back (
10962	Data::Session::LockedMedia::value_type (
10963	ComPtr <IHardDisk> (hd), false));
10964	}
10965
10966	if (mediaState == MediaState_Inaccessible)
10967	mediaToCheck.push_back (ComPtr <IHardDisk> (hd));
10968
10969	/* no locks or callers here since there should be no way to
10970	* change the hard disk parent at this point (as it is still
10971	* attached to the machine) */
10972	hd = hd->parent();
10973	}
10974	}
10975
10976	/* lock the DVD image for reading if mounted */
10977	{
10978	AutoReadLock driveLock (mDVDDrive);
10979	if (mDVDDrive->data()->state == DriveState_ImageMounted)
10980	{
10981	ComObjPtr <DVDImage> image = mDVDDrive->data()->image;
10982
10983	rc = image->LockRead (&mediaState);
10984	CheckComRCThrowRC (rc);
10985
10986	mData->mSession.mLockedMedia.push_back (
10987	Data::Session::LockedMedia::value_type (
10988	ComPtr <IDVDImage> (image), false));
10989
10990	if (mediaState == MediaState_Inaccessible)
10991	mediaToCheck.push_back (ComPtr <IDVDImage> (image));
10992	}
10993	}
10994
10995	/* lock the floppy image for reading if mounted */
10996	{
10997	AutoReadLock driveLock (mFloppyDrive);
10998	if (mFloppyDrive->data()->state == DriveState_ImageMounted)
10999	{
11000	ComObjPtr <FloppyImage> image = mFloppyDrive->data()->image;
11001
11002	rc = image->LockRead (&mediaState);
11003	CheckComRCThrowRC (rc);
11004
11005	mData->mSession.mLockedMedia.push_back (
11006	Data::Session::LockedMedia::value_type (
11007	ComPtr <IFloppyImage> (image), false));
11008
11009	if (mediaState == MediaState_Inaccessible)
11010	mediaToCheck.push_back (ComPtr <IFloppyImage> (image));
11011	}
11012	}
11013
11014	/* SUCCEEDED locking all media, now check accessibility */
11015
11016	ErrorInfoKeeper eik (true /* aIsNull */);
11017	MultiResult mrc (S_OK);
11018
11019	/* perform a check of inaccessible media deferred above */
11020	for (MediaList::const_iterator
11021	it = mediaToCheck.begin();
11022	it != mediaToCheck.end(); ++ it)
11023	{
11024	MediaState_T mediaState;
11025	rc = (*it)->COMGETTER(State) (&mediaState);
11026	CheckComRCThrowRC (rc);
11027
11028	Assert (mediaState == MediaState_LockedRead \|\|
11029	mediaState == MediaState_LockedWrite);
11030
11031	/* Note that we locked the medium already, so use the error
11032	* value to see if there was an accessibility failure */
11033
11034	Bstr error;
11035	rc = (*it)->COMGETTER(LastAccessError) (error.asOutParam());
11036	CheckComRCThrowRC (rc);
11037
11038	if (!error.isNull())
11039	{
11040	Bstr loc;
11041	rc = (*it)->COMGETTER(Location) (loc.asOutParam());
11042	CheckComRCThrowRC (rc);
11043
11044	/* collect multiple errors */
11045	eik.restore();
11046
11047	/* be in sync with MediumBase::setStateError() */
11048	Assert (!error.isEmpty());
11049	mrc = setError (E_FAIL,
11050	tr ("Medium '%ls' is not accessible. %ls"),
11051	loc.raw(), error.raw());
11052
11053	eik.fetch();
11054	}
11055	}
11056
11057	eik.restore();
11058	CheckComRCThrowRC ((HRESULT) mrc);
11059	}
11060	catch (HRESULT aRC)
11061	{
11062	/* Unlock all locked media on failure */
11063	unlockMedia();
11064	return aRC;
11065	}
11066
11067	return S_OK;
11068	}
11069
11070	/**
11071	* Undoes the locks made by by #lockMedia().
11072	*/
11073	void SessionMachine::unlockMedia()
11074	{
11075	AutoCaller autoCaller (this);
11076	AssertComRCReturnVoid (autoCaller.rc());
11077
11078	AutoWriteLock alock (this);
11079
11080	/* we may be holding important error info on the current thread;
11081	* preserve it */
11082	ErrorInfoKeeper eik;
11083
11084	HRESULT rc = S_OK;
11085
11086	for (Data::Session::LockedMedia::const_iterator
11087	it = mData->mSession.mLockedMedia.begin();
11088	it != mData->mSession.mLockedMedia.end(); ++ it)
11089	{
11090	MediaState_T state;
11091	if (it->second)
11092	rc = it->first->UnlockWrite (&state);
11093	else
11094	rc = it->first->UnlockRead (&state);
11095
11096	/* the latter can happen if an object was re-locked in
11097	* Machine::fixupHardDisks() */
11098	Assert (SUCCEEDED (rc) \|\| state == MediaState_LockedRead);
11099	}
11100
11101	mData->mSession.mLockedMedia.clear();
11102	}
11103
11104	/**
11105	* Helper to change the machine state (reimplementation).
11106	*
11107	* @note Locks this object for writing.
11108	*/
11109	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
11110	{
11111	LogFlowThisFuncEnter();
11112	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
11113
11114	AutoCaller autoCaller (this);
11115	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11116
11117	AutoWriteLock alock (this);
11118
11119	MachineState_T oldMachineState = mData->mMachineState;
11120
11121	AssertMsgReturn (oldMachineState != aMachineState,
11122	("oldMachineState=%d, aMachineState=%d\n",
11123	oldMachineState, aMachineState), E_FAIL);
11124
11125	HRESULT rc = S_OK;
11126
11127	int stsFlags = 0;
11128	bool deleteSavedState = false;
11129
11130	/* detect some state transitions */
11131
11132	if ((oldMachineState == MachineState_Saved &&
11133	aMachineState == MachineState_Restoring) \|\|
11134	(oldMachineState < MachineState_Running /* any other OFF state */ &&
11135	aMachineState == MachineState_Starting))
11136	{
11137	/* The EMT thread is about to start */
11138
11139	/* Nothing to do here for now... */
11140
11141	/// @todo NEWMEDIA don't let mDVDDrive and other children
11142	/// change anything when in the Starting/Restoring state
11143	}
11144	else
11145	if (oldMachineState >= MachineState_Running &&
11146	oldMachineState != MachineState_Discarding &&
11147	oldMachineState != MachineState_SettingUp &&
11148	aMachineState < MachineState_Running &&
11149	/* ignore PoweredOff->Saving->PoweredOff transition when taking a
11150	* snapshot */
11151	(mSnapshotData.mSnapshot.isNull() \|\|
11152	mSnapshotData.mLastState >= MachineState_Running))
11153	{
11154	/* The EMT thread has just stopped, unlock attached media. Note that as
11155	* opposed to locking that is done from Console, we do unlocking here
11156	* because the VM process may have aborted before having a chance to
11157	* properly unlock all media it locked. */
11158
11159	unlockMedia();
11160	}
11161
11162	if (oldMachineState == MachineState_Restoring)
11163	{
11164	if (aMachineState != MachineState_Saved)
11165	{
11166	/*
11167	* delete the saved state file once the machine has finished
11168	* restoring from it (note that Console sets the state from
11169	* Restoring to Saved if the VM couldn't restore successfully,
11170	* to give the user an ability to fix an error and retry --
11171	* we keep the saved state file in this case)
11172	*/
11173	deleteSavedState = true;
11174	}
11175	}
11176	else
11177	if (oldMachineState == MachineState_Saved &&
11178	(aMachineState == MachineState_PoweredOff \|\|
11179	aMachineState == MachineState_Aborted))
11180	{
11181	/*
11182	* delete the saved state after Console::DiscardSavedState() is called
11183	* or if the VM process (owning a direct VM session) crashed while the
11184	* VM was Saved
11185	*/
11186
11187	/// @todo (dmik)
11188	// Not sure that deleting the saved state file just because of the
11189	// client death before it attempted to restore the VM is a good
11190	// thing. But when it crashes we need to go to the Aborted state
11191	// which cannot have the saved state file associated... The only
11192	// way to fix this is to make the Aborted condition not a VM state
11193	// but a bool flag: i.e., when a crash occurs, set it to true and
11194	// change the state to PoweredOff or Saved depending on the
11195	// saved state presence.
11196
11197	deleteSavedState = true;
11198	mData->mCurrentStateModified = TRUE;
11199	stsFlags \|= SaveSTS_CurStateModified;
11200	}
11201
11202	if (aMachineState == MachineState_Starting \|\|
11203	aMachineState == MachineState_Restoring)
11204	{
11205	/* set the current state modified flag to indicate that the current
11206	* state is no more identical to the state in the
11207	* current snapshot */
11208	if (!mData->mCurrentSnapshot.isNull())
11209	{
11210	mData->mCurrentStateModified = TRUE;
11211	stsFlags \|= SaveSTS_CurStateModified;
11212	}
11213	}
11214
11215	if (deleteSavedState == true)
11216	{
11217	Assert (!mSSData->mStateFilePath.isEmpty());
11218	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
11219	mSSData->mStateFilePath.setNull();
11220	stsFlags \|= SaveSTS_StateFilePath;
11221	}
11222
11223	/* redirect to the underlying peer machine */
11224	mPeer->setMachineState (aMachineState);
11225
11226	if (aMachineState == MachineState_PoweredOff \|\|
11227	aMachineState == MachineState_Aborted \|\|
11228	aMachineState == MachineState_Saved)
11229	{
11230	/* the machine has stopped execution
11231	* (or the saved state file was adopted) */
11232	stsFlags \|= SaveSTS_StateTimeStamp;
11233	}
11234
11235	if ((oldMachineState == MachineState_PoweredOff \|\|
11236	oldMachineState == MachineState_Aborted) &&
11237	aMachineState == MachineState_Saved)
11238	{
11239	/* the saved state file was adopted */
11240	Assert (!mSSData->mStateFilePath.isNull());
11241	stsFlags \|= SaveSTS_StateFilePath;
11242	}
11243
11244	rc = saveStateSettings (stsFlags);
11245
11246	if ((oldMachineState != MachineState_PoweredOff &&
11247	oldMachineState != MachineState_Aborted) &&
11248	(aMachineState == MachineState_PoweredOff \|\|
11249	aMachineState == MachineState_Aborted))
11250	{
11251	/* we've been shut down for any reason */
11252	/* no special action so far */
11253	}
11254
11255	LogFlowThisFunc (("rc=%08X\n", rc));
11256	LogFlowThisFuncLeave();
11257	return rc;
11258	}
11259
11260	/**
11261	* Sends the current machine state value to the VM process.
11262	*
11263	* @note Locks this object for reading, then calls a client process.
11264	*/
11265	HRESULT SessionMachine::updateMachineStateOnClient()
11266	{
11267	AutoCaller autoCaller (this);
11268	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11269
11270	ComPtr <IInternalSessionControl> directControl;
11271	{
11272	AutoReadLock alock (this);
11273	AssertReturn (!!mData, E_FAIL);
11274	directControl = mData->mSession.mDirectControl;
11275
11276	/* directControl may be already set to NULL here in #OnSessionEnd()
11277	* called too early by the direct session process while there is still
11278	* some operation (like discarding the snapshot) in progress. The client
11279	* process in this case is waiting inside Session::close() for the
11280	* "end session" process object to complete, while #uninit() called by
11281	* #checkForDeath() on the Watcher thread is waiting for the pending
11282	* operation to complete. For now, we accept this inconsitent behavior
11283	* and simply do nothing here. */
11284
11285	if (mData->mSession.mState == SessionState_Closing)
11286	return S_OK;
11287
11288	AssertReturn (!directControl.isNull(), E_FAIL);
11289	}
11290
11291	return directControl->UpdateMachineState (mData->mMachineState);
11292	}
11293
11294	/* static */
11295	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD /* thread /, void pvUser)
11296	{
11297	AssertReturn (pvUser, VERR_INVALID_POINTER);
11298
11299	Task task = static_cast <Task > (pvUser);
11300	task->handler();
11301
11302	// it's our responsibility to delete the task
11303	delete task;
11304
11305	return 0;
11306	}
11307
11308	/////////////////////////////////////////////////////////////////////////////
11309	// SnapshotMachine class
11310	/////////////////////////////////////////////////////////////////////////////
11311
11312	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
11313
11314	HRESULT SnapshotMachine::FinalConstruct()
11315	{
11316	LogFlowThisFunc (("\n"));
11317
11318	/* set the proper type to indicate we're the SnapshotMachine instance */
11319	unconst (mType) = IsSnapshotMachine;
11320
11321	return S_OK;
11322	}
11323
11324	void SnapshotMachine::FinalRelease()
11325	{
11326	LogFlowThisFunc (("\n"));
11327
11328	uninit();
11329	}
11330
11331	/**
11332	* Initializes the SnapshotMachine object when taking a snapshot.
11333	*
11334	* @param aSessionMachine machine to take a snapshot from
11335	* @param aSnapshotId snapshot ID of this snapshot machine
11336	* @param aStateFilePath file where the execution state will be later saved
11337	* (or NULL for the offline snapshot)
11338	*
11339	* @note The aSessionMachine must be locked for writing.
11340	*/
11341	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
11342	IN_GUID aSnapshotId,
11343	IN_BSTR aStateFilePath)
11344	{
11345	LogFlowThisFuncEnter();
11346	LogFlowThisFunc (("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
11347
11348	AssertReturn (aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
11349
11350	/* Enclose the state transition NotReady->InInit->Ready */
11351	AutoInitSpan autoInitSpan (this);
11352	AssertReturn (autoInitSpan.isOk(), E_FAIL);
11353
11354	AssertReturn (aSessionMachine->isWriteLockOnCurrentThread(), E_FAIL);
11355
11356	mSnapshotId = aSnapshotId;
11357
11358	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
11359	unconst (mPeer) = aSessionMachine->mPeer;
11360	/* share the parent pointer */
11361	unconst (mParent) = mPeer->mParent;
11362
11363	/* take the pointer to Data to share */
11364	mData.share (mPeer->mData);
11365
11366	/* take the pointer to UserData to share (our UserData must always be the
11367	* same as Machine's data) */
11368	mUserData.share (mPeer->mUserData);
11369	/* make a private copy of all other data (recent changes from SessionMachine) */
11370	mHWData.attachCopy (aSessionMachine->mHWData);
11371	mHDData.attachCopy (aSessionMachine->mHDData);
11372
11373	/* SSData is always unique for SnapshotMachine */
11374	mSSData.allocate();
11375	mSSData->mStateFilePath = aStateFilePath;
11376
11377	HRESULT rc = S_OK;
11378
11379	/* create copies of all shared folders (mHWData after attiching a copy
11380	* contains just references to original objects) */
11381	for (HWData::SharedFolderList::iterator
11382	it = mHWData->mSharedFolders.begin();
11383	it != mHWData->mSharedFolders.end();
11384	++ it)
11385	{
11386	ComObjPtr <SharedFolder> folder;
11387	folder.createObject();
11388	rc = folder->initCopy (this, *it);
11389	CheckComRCReturnRC (rc);
11390	*it = folder;
11391	}
11392
11393	/* associate hard disks with the snapshot
11394	* (Machine::uninitDataAndChildObjects() will deassociate at destruction) */
11395	for (HDData::AttachmentList::const_iterator
11396	it = mHDData->mAttachments.begin();
11397	it != mHDData->mAttachments.end();
11398	++ it)
11399	{
11400	rc = (*it)->hardDisk()->attachTo (mData->mUuid, mSnapshotId);
11401	AssertComRC (rc);
11402	}
11403
11404	/* create copies of all storage controllers (mStorageControllerData
11405	* after attaching a copy contains just references to original objects) */
11406	mStorageControllers.allocate();
11407	for (StorageControllerList::const_iterator
11408	it = aSessionMachine->mStorageControllers->begin();
11409	it != aSessionMachine->mStorageControllers->end();
11410	++ it)
11411	{
11412	ComObjPtr <StorageController> ctrl;
11413	ctrl.createObject();
11414	ctrl->initCopy (this, *it);
11415	mStorageControllers->push_back(ctrl);
11416	}
11417
11418	/* create all other child objects that will be immutable private copies */
11419
11420	unconst (mBIOSSettings).createObject();
11421	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
11422
11423	#ifdef VBOX_WITH_VRDP
11424	unconst (mVRDPServer).createObject();
11425	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
11426	#endif
11427
11428	unconst (mDVDDrive).createObject();
11429	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
11430
11431	unconst (mFloppyDrive).createObject();
11432	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
11433
11434	unconst (mAudioAdapter).createObject();
11435	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
11436
11437	unconst (mUSBController).createObject();
11438	mUSBController->initCopy (this, mPeer->mUSBController);
11439
11440	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11441	{
11442	unconst (mNetworkAdapters [slot]).createObject();
11443	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
11444	}
11445
11446	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11447	{
11448	unconst (mSerialPorts [slot]).createObject();
11449	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
11450	}
11451
11452	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11453	{
11454	unconst (mParallelPorts [slot]).createObject();
11455	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
11456	}
11457
11458	/* Confirm a successful initialization when it's the case */
11459	autoInitSpan.setSucceeded();
11460
11461	LogFlowThisFuncLeave();
11462	return S_OK;
11463	}
11464
11465	/**
11466	* Initializes the SnapshotMachine object when loading from the settings file.
11467	*
11468	* @param aMachine machine the snapshot belngs to
11469	* @param aHWNode <Hardware> node
11470	* @param aHDAsNode <HardDiskAttachments> node
11471	* @param aSnapshotId snapshot ID of this snapshot machine
11472	* @param aStateFilePath file where the execution state is saved
11473	* (or NULL for the offline snapshot)
11474	*
11475	* @note Doesn't lock anything.
11476	*/
11477	HRESULT SnapshotMachine::init (Machine *aMachine,
11478	const settings::Key &aHWNode,
11479	const settings::Key &aHDAsNode,
11480	IN_GUID aSnapshotId, IN_BSTR aStateFilePath)
11481	{
11482	LogFlowThisFuncEnter();
11483	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
11484
11485	AssertReturn (aMachine && !aHWNode.isNull() && !aHDAsNode.isNull() &&
11486	!Guid (aSnapshotId).isEmpty(),
11487	E_INVALIDARG);
11488
11489	/* Enclose the state transition NotReady->InInit->Ready */
11490	AutoInitSpan autoInitSpan (this);
11491	AssertReturn (autoInitSpan.isOk(), E_FAIL);
11492
11493	/* Don't need to lock aMachine when VirtualBox is starting up */
11494
11495	mSnapshotId = aSnapshotId;
11496
11497	/* memorize the primary Machine instance */
11498	unconst (mPeer) = aMachine;
11499	/* share the parent pointer */
11500	unconst (mParent) = mPeer->mParent;
11501
11502	/* take the pointer to Data to share */
11503	mData.share (mPeer->mData);
11504	/*
11505	* take the pointer to UserData to share
11506	* (our UserData must always be the same as Machine's data)
11507	*/
11508	mUserData.share (mPeer->mUserData);
11509	/* allocate private copies of all other data (will be loaded from settings) */
11510	mHWData.allocate();
11511	mHDData.allocate();
11512	mStorageControllers.allocate();
11513
11514	/* SSData is always unique for SnapshotMachine */
11515	mSSData.allocate();
11516	mSSData->mStateFilePath = aStateFilePath;
11517
11518	/* create all other child objects that will be immutable private copies */
11519
11520	unconst (mBIOSSettings).createObject();
11521	mBIOSSettings->init (this);
11522
11523	#ifdef VBOX_WITH_VRDP
11524	unconst (mVRDPServer).createObject();
11525	mVRDPServer->init (this);
11526	#endif
11527
11528	unconst (mDVDDrive).createObject();
11529	mDVDDrive->init (this);
11530
11531	unconst (mFloppyDrive).createObject();
11532	mFloppyDrive->init (this);
11533
11534	unconst (mAudioAdapter).createObject();
11535	mAudioAdapter->init (this);
11536
11537	unconst (mUSBController).createObject();
11538	mUSBController->init (this);
11539
11540	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11541	{
11542	unconst (mNetworkAdapters [slot]).createObject();
11543	mNetworkAdapters [slot]->init (this, slot);
11544	}
11545
11546	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11547	{
11548	unconst (mSerialPorts [slot]).createObject();
11549	mSerialPorts [slot]->init (this, slot);
11550	}
11551
11552	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11553	{
11554	unconst (mParallelPorts [slot]).createObject();
11555	mParallelPorts [slot]->init (this, slot);
11556	}
11557
11558	/* load hardware and harddisk settings */
11559
11560	HRESULT rc = loadHardware (aHWNode);
11561	if (SUCCEEDED (rc))
11562	rc = loadStorageControllers (aHDAsNode, true /* aRegistered */, &mSnapshotId);
11563
11564	if (SUCCEEDED (rc))
11565	{
11566	/* commit all changes made during the initialization */
11567	commit();
11568	}
11569
11570	/* Confirm a successful initialization when it's the case */
11571	if (SUCCEEDED (rc))
11572	autoInitSpan.setSucceeded();
11573
11574	LogFlowThisFuncLeave();
11575	return rc;
11576	}
11577
11578	/**
11579	* Uninitializes this SnapshotMachine object.
11580	*/
11581	void SnapshotMachine::uninit()
11582	{
11583	LogFlowThisFuncEnter();
11584
11585	/* Enclose the state transition Ready->InUninit->NotReady */
11586	AutoUninitSpan autoUninitSpan (this);
11587	if (autoUninitSpan.uninitDone())
11588	return;
11589
11590	uninitDataAndChildObjects();
11591
11592	/* free the essential data structure last */
11593	mData.free();
11594
11595	unconst (mParent).setNull();
11596	unconst (mPeer).setNull();
11597
11598	LogFlowThisFuncLeave();
11599	}
11600
11601	// util::Lockable interface
11602	////////////////////////////////////////////////////////////////////////////////
11603
11604	/**
11605	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
11606	* with the primary Machine instance (mPeer).
11607	*/
11608	RWLockHandle *SnapshotMachine::lockHandle() const
11609	{
11610	AssertReturn (!mPeer.isNull(), NULL);
11611	return mPeer->lockHandle();
11612	}
11613
11614	// public methods only for internal purposes
11615	////////////////////////////////////////////////////////////////////////////////
11616
11617	/**
11618	* Called by the snapshot object associated with this SnapshotMachine when
11619	* snapshot data such as name or description is changed.
11620	*
11621	* @note Locks this object for writing.
11622	*/
11623	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
11624	{
11625	AutoWriteLock alock (this);
11626
11627	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
11628
11629	/* inform callbacks */
11630	mParent->onSnapshotChange (mData->mUuid, aSnapshot->data().mId);
11631
11632	return S_OK;
11633	}
11634	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 18622

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