MachineImpl.cpp@ 20958

Last change on this file since 20958 was 20931, checked in by vboxsync, 15 years ago
API: cleanup of previous changes
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1	/* $Id: MachineImpl.cpp 20931 2009-06-25 12:17:55Z 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) (BSTR *aId)
872	{
873	CheckComArgOutPointerValid (aId);
874
875	AutoLimitedCaller autoCaller (this);
876	CheckComRCReturnRC (autoCaller.rc());
877
878	AutoReadLock alock (this);
879
880	mData->mUuid.toUtf16().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	NOREF(vrdpServer);
1472	ReturnComNotImplemented();
1473	#endif
1474	}
1475
1476	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1477	{
1478	if (!dvdDrive)
1479	return E_POINTER;
1480
1481	AutoCaller autoCaller (this);
1482	CheckComRCReturnRC (autoCaller.rc());
1483
1484	AutoReadLock alock (this);
1485
1486	Assert (!!mDVDDrive);
1487	mDVDDrive.queryInterfaceTo (dvdDrive);
1488	return S_OK;
1489	}
1490
1491	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1492	{
1493	if (!floppyDrive)
1494	return E_POINTER;
1495
1496	AutoCaller autoCaller (this);
1497	CheckComRCReturnRC (autoCaller.rc());
1498
1499	AutoReadLock alock (this);
1500
1501	Assert (!!mFloppyDrive);
1502	mFloppyDrive.queryInterfaceTo (floppyDrive);
1503	return S_OK;
1504	}
1505
1506	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1507	{
1508	if (!audioAdapter)
1509	return E_POINTER;
1510
1511	AutoCaller autoCaller (this);
1512	CheckComRCReturnRC (autoCaller.rc());
1513
1514	AutoReadLock alock (this);
1515
1516	mAudioAdapter.queryInterfaceTo (audioAdapter);
1517	return S_OK;
1518	}
1519
1520	STDMETHODIMP Machine::COMGETTER(USBController) (IUSBController **aUSBController)
1521	{
1522	#ifdef VBOX_WITH_USB
1523	CheckComArgOutPointerValid (aUSBController);
1524
1525	AutoCaller autoCaller (this);
1526	CheckComRCReturnRC (autoCaller.rc());
1527
1528	MultiResult rc = mParent->host()->checkUSBProxyService();
1529	CheckComRCReturnRC (rc);
1530
1531	AutoReadLock alock (this);
1532
1533	return rc = mUSBController.queryInterfaceTo (aUSBController);
1534	#else
1535	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1536	* extended error info to indicate that USB is simply not available
1537	* (w/o treting it as a failure), for example, as in OSE */
1538	NOREF(aUSBController);
1539	ReturnComNotImplemented();
1540	#endif
1541	}
1542
1543	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *aFilePath)
1544	{
1545	CheckComArgOutPointerValid (aFilePath);
1546
1547	AutoLimitedCaller autoCaller (this);
1548	CheckComRCReturnRC (autoCaller.rc());
1549
1550	AutoReadLock alock (this);
1551
1552	mData->mConfigFileFull.cloneTo (aFilePath);
1553	return S_OK;
1554	}
1555
1556	STDMETHODIMP Machine::
1557	COMGETTER(SettingsFileVersion) (BSTR *aSettingsFileVersion)
1558	{
1559	CheckComArgOutPointerValid (aSettingsFileVersion);
1560
1561	AutoCaller autoCaller (this);
1562	CheckComRCReturnRC (autoCaller.rc());
1563
1564	AutoReadLock alock (this);
1565
1566	mData->mSettingsFileVersion.cloneTo (aSettingsFileVersion);
1567	return S_OK;
1568	}
1569
1570	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *aModified)
1571	{
1572	CheckComArgOutPointerValid (aModified);
1573
1574	AutoCaller autoCaller (this);
1575	CheckComRCReturnRC (autoCaller.rc());
1576
1577	AutoWriteLock alock (this);
1578
1579	HRESULT rc = checkStateDependency (MutableStateDep);
1580	CheckComRCReturnRC (rc);
1581
1582	if (!isConfigLocked())
1583	{
1584	/*
1585	* if we're ready and isConfigLocked() is FALSE then it means
1586	* that no config file exists yet, so always return TRUE
1587	*/
1588	*aModified = TRUE;
1589	}
1590	else
1591	{
1592	*aModified = isModified();
1593	}
1594
1595	return S_OK;
1596	}
1597
1598	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1599	{
1600	CheckComArgOutPointerValid (aSessionState);
1601
1602	AutoCaller autoCaller (this);
1603	CheckComRCReturnRC (autoCaller.rc());
1604
1605	AutoReadLock alock (this);
1606
1607	*aSessionState = mData->mSession.mState;
1608
1609	return S_OK;
1610	}
1611
1612	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1613	{
1614	CheckComArgOutPointerValid (aSessionType);
1615
1616	AutoCaller autoCaller (this);
1617	CheckComRCReturnRC (autoCaller.rc());
1618
1619	AutoReadLock alock (this);
1620
1621	mData->mSession.mType.cloneTo (aSessionType);
1622
1623	return S_OK;
1624	}
1625
1626	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1627	{
1628	CheckComArgOutPointerValid (aSessionPid);
1629
1630	AutoCaller autoCaller (this);
1631	CheckComRCReturnRC (autoCaller.rc());
1632
1633	AutoReadLock alock (this);
1634
1635	*aSessionPid = mData->mSession.mPid;
1636
1637	return S_OK;
1638	}
1639
1640	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1641	{
1642	if (!machineState)
1643	return E_POINTER;
1644
1645	AutoCaller autoCaller (this);
1646	CheckComRCReturnRC (autoCaller.rc());
1647
1648	AutoReadLock alock (this);
1649
1650	*machineState = mData->mMachineState;
1651
1652	return S_OK;
1653	}
1654
1655	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1656	{
1657	CheckComArgOutPointerValid (aLastStateChange);
1658
1659	AutoCaller autoCaller (this);
1660	CheckComRCReturnRC (autoCaller.rc());
1661
1662	AutoReadLock alock (this);
1663
1664	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1665
1666	return S_OK;
1667	}
1668
1669	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1670	{
1671	CheckComArgOutPointerValid (aStateFilePath);
1672
1673	AutoCaller autoCaller (this);
1674	CheckComRCReturnRC (autoCaller.rc());
1675
1676	AutoReadLock alock (this);
1677
1678	mSSData->mStateFilePath.cloneTo (aStateFilePath);
1679
1680	return S_OK;
1681	}
1682
1683	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1684	{
1685	CheckComArgOutPointerValid (aLogFolder);
1686
1687	AutoCaller autoCaller (this);
1688	AssertComRCReturnRC (autoCaller.rc());
1689
1690	AutoReadLock alock (this);
1691
1692	Utf8Str logFolder;
1693	getLogFolder (logFolder);
1694
1695	Bstr (logFolder).cloneTo (aLogFolder);
1696
1697	return S_OK;
1698	}
1699
1700	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1701	{
1702	CheckComArgOutPointerValid (aCurrentSnapshot);
1703
1704	AutoCaller autoCaller (this);
1705	CheckComRCReturnRC (autoCaller.rc());
1706
1707	AutoReadLock alock (this);
1708
1709	mData->mCurrentSnapshot.queryInterfaceTo (aCurrentSnapshot);
1710
1711	return S_OK;
1712	}
1713
1714	STDMETHODIMP Machine::COMGETTER(SnapshotCount) (ULONG *aSnapshotCount)
1715	{
1716	CheckComArgOutPointerValid (aSnapshotCount);
1717
1718	AutoCaller autoCaller (this);
1719	CheckComRCReturnRC (autoCaller.rc());
1720
1721	AutoReadLock alock (this);
1722
1723	*aSnapshotCount = !mData->mFirstSnapshot ? 0 :
1724	mData->mFirstSnapshot->descendantCount() + 1 /* self */;
1725
1726	return S_OK;
1727	}
1728
1729	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1730	{
1731	CheckComArgOutPointerValid (aCurrentStateModified);
1732
1733	AutoCaller autoCaller (this);
1734	CheckComRCReturnRC (autoCaller.rc());
1735
1736	AutoReadLock alock (this);
1737
1738	/* Note: for machines with no snapshots, we always return FALSE
1739	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1740	* reasons :) */
1741
1742	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1743	mData->mCurrentStateModified;
1744
1745	return S_OK;
1746	}
1747
1748	STDMETHODIMP
1749	Machine::COMGETTER(SharedFolders) (ComSafeArrayOut (ISharedFolder *, aSharedFolders))
1750	{
1751	CheckComArgOutSafeArrayPointerValid (aSharedFolders);
1752
1753	AutoCaller autoCaller (this);
1754	CheckComRCReturnRC (autoCaller.rc());
1755
1756	AutoReadLock alock (this);
1757
1758	SafeIfaceArray <ISharedFolder> folders (mHWData->mSharedFolders);
1759	folders.detachTo (ComSafeArrayOutArg(aSharedFolders));
1760
1761	return S_OK;
1762	}
1763
1764	STDMETHODIMP
1765	Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1766	{
1767	CheckComArgOutPointerValid (aClipboardMode);
1768
1769	AutoCaller autoCaller (this);
1770	CheckComRCReturnRC (autoCaller.rc());
1771
1772	AutoReadLock alock (this);
1773
1774	*aClipboardMode = mHWData->mClipboardMode;
1775
1776	return S_OK;
1777	}
1778
1779	STDMETHODIMP
1780	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
1781	{
1782	AutoCaller autoCaller (this);
1783	CheckComRCReturnRC (autoCaller.rc());
1784
1785	AutoWriteLock alock (this);
1786
1787	HRESULT rc = checkStateDependency (MutableStateDep);
1788	CheckComRCReturnRC (rc);
1789
1790	mHWData.backup();
1791	mHWData->mClipboardMode = aClipboardMode;
1792
1793	return S_OK;
1794	}
1795
1796	STDMETHODIMP
1797	Machine::COMGETTER(GuestPropertyNotificationPatterns) (BSTR *aPatterns)
1798	{
1799	CheckComArgOutPointerValid (aPatterns);
1800
1801	AutoCaller autoCaller (this);
1802	CheckComRCReturnRC (autoCaller.rc());
1803
1804	AutoReadLock alock (this);
1805
1806	mHWData->mGuestPropertyNotificationPatterns.cloneTo (aPatterns);
1807
1808	return RT_LIKELY (aPatterns != NULL) ? S_OK : E_OUTOFMEMORY;
1809	}
1810
1811	STDMETHODIMP
1812	Machine::COMSETTER(GuestPropertyNotificationPatterns) (IN_BSTR aPatterns)
1813	{
1814	AssertLogRelReturn (VALID_PTR (aPatterns), E_POINTER);
1815	AutoCaller autoCaller (this);
1816	CheckComRCReturnRC (autoCaller.rc());
1817
1818	AutoWriteLock alock (this);
1819
1820	HRESULT rc = checkStateDependency (MutableStateDep);
1821	CheckComRCReturnRC (rc);
1822
1823	mHWData.backup();
1824	mHWData->mGuestPropertyNotificationPatterns = aPatterns;
1825
1826	return RT_LIKELY (!mHWData->mGuestPropertyNotificationPatterns.isNull())
1827	? S_OK : E_OUTOFMEMORY;
1828	}
1829
1830	STDMETHODIMP
1831	Machine::COMGETTER(StorageControllers) (ComSafeArrayOut(IStorageController *, aStorageControllers))
1832	{
1833	CheckComArgOutSafeArrayPointerValid (aStorageControllers);
1834
1835	AutoCaller autoCaller (this);
1836	CheckComRCReturnRC (autoCaller.rc());
1837
1838	AutoReadLock alock (this);
1839
1840	SafeIfaceArray <IStorageController> ctrls (*mStorageControllers.data());
1841	ctrls.detachTo (ComSafeArrayOutArg(aStorageControllers));
1842
1843	return S_OK;
1844	}
1845
1846	// IMachine methods
1847	/////////////////////////////////////////////////////////////////////////////
1848
1849	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
1850	{
1851	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1852	return setError (E_INVALIDARG,
1853	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1854	aPosition, SchemaDefs::MaxBootPosition);
1855
1856	if (aDevice == DeviceType_USB)
1857	return setError (E_NOTIMPL,
1858	tr ("Booting from USB device is currently not supported"));
1859
1860	AutoCaller autoCaller (this);
1861	CheckComRCReturnRC (autoCaller.rc());
1862
1863	AutoWriteLock alock (this);
1864
1865	HRESULT rc = checkStateDependency (MutableStateDep);
1866	CheckComRCReturnRC (rc);
1867
1868	mHWData.backup();
1869	mHWData->mBootOrder [aPosition - 1] = aDevice;
1870
1871	return S_OK;
1872	}
1873
1874	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
1875	{
1876	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1877	return setError (E_INVALIDARG,
1878	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1879	aPosition, SchemaDefs::MaxBootPosition);
1880
1881	AutoCaller autoCaller (this);
1882	CheckComRCReturnRC (autoCaller.rc());
1883
1884	AutoReadLock alock (this);
1885
1886	*aDevice = mHWData->mBootOrder [aPosition - 1];
1887
1888	return S_OK;
1889	}
1890
1891	STDMETHODIMP Machine::AttachHardDisk(IN_BSTR aId,
1892	IN_BSTR aControllerName, LONG aControllerPort,
1893	LONG aDevice)
1894	{
1895	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
1896	aControllerName, aControllerPort, aDevice));
1897
1898	AutoCaller autoCaller (this);
1899	CheckComRCReturnRC (autoCaller.rc());
1900
1901	/* VirtualBox::findHardDisk() need read lock; also we want to make sure the
1902	* hard disk object we pick up doesn't get unregistered before we finish. */
1903	AutoReadLock vboxLock (mParent);
1904	AutoWriteLock alock (this);
1905
1906	HRESULT rc = checkStateDependency (MutableStateDep);
1907	CheckComRCReturnRC (rc);
1908
1909	/// @todo NEWMEDIA implicit machine registration
1910	if (!mData->mRegistered)
1911	return setError (VBOX_E_INVALID_OBJECT_STATE,
1912	tr ("Cannot attach hard disks to an unregistered machine"));
1913
1914	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
1915
1916	if (Global::IsOnlineOrTransient (mData->mMachineState))
1917	return setError (VBOX_E_INVALID_VM_STATE,
1918	tr ("Invalid machine state: %d"), mData->mMachineState);
1919
1920	/* Check for an existing controller. */
1921	ComObjPtr<StorageController> ctl;
1922	rc = getStorageControllerByName(aControllerName, ctl, true /* aSetError */);
1923	CheckComRCReturnRC(rc);
1924
1925	/* check that the port and device are not out of range. */
1926	ULONG portCount;
1927	ULONG devicesPerPort;
1928	rc = ctl->COMGETTER(PortCount)(&portCount);
1929	CheckComRCReturnRC(rc);
1930	rc = ctl->COMGETTER(MaxDevicesPerPortCount)(&devicesPerPort);
1931	CheckComRCReturnRC(rc);
1932
1933	if ( (aControllerPort < 0)
1934	\|\| (aControllerPort >= (LONG)portCount)
1935	\|\| (aDevice < 0)
1936	\|\| (aDevice >= (LONG)devicesPerPort)
1937	)
1938	return setError (E_INVALIDARG,
1939	tr ("The port and/or count parameter are out of range [%lu:%lu]"),
1940	portCount, devicesPerPort);
1941
1942	/* check if the device slot is already busy */
1943	HDData::AttachmentList::const_iterator it =
1944	std::find_if (mHDData->mAttachments.begin(),
1945	mHDData->mAttachments.end(),
1946	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
1947
1948	if (it != mHDData->mAttachments.end())
1949	{
1950	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
1951	AutoReadLock hdLock (hd);
1952	return setError (VBOX_E_OBJECT_IN_USE,
1953	tr ("Hard disk '%ls' is already attached to device slot %d on "
1954	"port %d of controller '%ls' of this virtual machine"),
1955	hd->locationFull().raw(), aDevice, aControllerPort, aControllerName);
1956	}
1957
1958	Guid id(aId);
1959
1960	/* find a hard disk by UUID */
1961	ComObjPtr<HardDisk> hd;
1962	rc = mParent->findHardDisk(&id, NULL, true /* aSetError */, &hd);
1963	CheckComRCReturnRC (rc);
1964
1965	AutoCaller hdCaller (hd);
1966	CheckComRCReturnRC (hdCaller.rc());
1967
1968	AutoWriteLock hdLock (hd);
1969
1970	if (std::find_if (mHDData->mAttachments.begin(),
1971	mHDData->mAttachments.end(),
1972	HardDiskAttachment::RefersTo (hd)) !=
1973	mHDData->mAttachments.end())
1974	{
1975	return setError (VBOX_E_OBJECT_IN_USE,
1976	tr ("Hard disk '%ls' is already attached to this virtual machine"),
1977	hd->locationFull().raw());
1978	}
1979
1980	bool indirect = hd->isReadOnly();
1981	bool associate = true;
1982
1983	do
1984	{
1985	if (mHDData.isBackedUp())
1986	{
1987	const HDData::AttachmentList &oldAtts =
1988	mHDData.backedUpData()->mAttachments;
1989
1990	/* check if the hard disk was attached to the VM before we started
1991	* changing attachemnts in which case the attachment just needs to
1992	* be restored */
1993	HDData::AttachmentList::const_iterator it =
1994	std::find_if (oldAtts.begin(), oldAtts.end(),
1995	HardDiskAttachment::RefersTo (hd));
1996	if (it != oldAtts.end())
1997	{
1998	AssertReturn (!indirect, E_FAIL);
1999
2000	/* see if it's the same bus/channel/device */
2001	if ((*it)->device() == aDevice &&
2002	(*it)->port() == aControllerPort &&
2003	(*it)->controller() == aControllerName)
2004	{
2005	/* the simplest case: restore the whole attachment
2006	* and return, nothing else to do */
2007	mHDData->mAttachments.push_back (*it);
2008	return S_OK;
2009	}
2010
2011	/* bus/channel/device differ; we need a new attachment object,
2012	* but don't try to associate it again */
2013	associate = false;
2014	break;
2015	}
2016	}
2017
2018	/* go further only if the attachment is to be indirect */
2019	if (!indirect)
2020	break;
2021
2022	/* perform the so called smart attachment logic for indirect
2023	* attachments. Note that smart attachment is only applicable to base
2024	* hard disks. */
2025
2026	if (hd->parent().isNull())
2027	{
2028	/* first, investigate the backup copy of the current hard disk
2029	* attachments to make it possible to re-attach existing diffs to
2030	* another device slot w/o losing their contents */
2031	if (mHDData.isBackedUp())
2032	{
2033	const HDData::AttachmentList &oldAtts =
2034	mHDData.backedUpData()->mAttachments;
2035
2036	HDData::AttachmentList::const_iterator foundIt = oldAtts.end();
2037	uint32_t foundLevel = 0;
2038
2039	for (HDData::AttachmentList::const_iterator
2040	it = oldAtts.begin(); it != oldAtts.end(); ++ it)
2041	{
2042	uint32_t level = 0;
2043	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2044	{
2045	/* skip the hard disk if its currently attached (we
2046	* cannot attach the same hard disk twice) */
2047	if (std::find_if (mHDData->mAttachments.begin(),
2048	mHDData->mAttachments.end(),
2049	HardDiskAttachment::RefersTo (
2050	(*it)->hardDisk())) !=
2051	mHDData->mAttachments.end())
2052	continue;
2053
2054	/* matched device, channel and bus (i.e. attached to the
2055	* same place) will win and immediately stop the search;
2056	* otherwise the attachment that has the youngest
2057	* descendant of hd will be used
2058	*/
2059	if ((*it)->device() == aDevice &&
2060	(*it)->port() == aControllerPort &&
2061	(*it)->controller() == aControllerName)
2062	{
2063	/* the simplest case: restore the whole attachment
2064	* and return, nothing else to do */
2065	mHDData->mAttachments.push_back (*it);
2066	return S_OK;
2067	}
2068	else
2069	if (foundIt == oldAtts.end() \|\|
2070	level > foundLevel /* prefer younger */)
2071	{
2072	foundIt = it;
2073	foundLevel = level;
2074	}
2075	}
2076	}
2077
2078	if (foundIt != oldAtts.end())
2079	{
2080	/* use the previously attached hard disk */
2081	hd = (*foundIt)->hardDisk();
2082	hdCaller.attach (hd);
2083	CheckComRCReturnRC (hdCaller.rc());
2084	hdLock.attach (hd);
2085	/* not implicit, doesn't require association with this VM */
2086	indirect = false;
2087	associate = false;
2088	/* go right to the HardDiskAttachment creation */
2089	break;
2090	}
2091	}
2092
2093	/* then, search through snapshots for the best diff in the given
2094	* hard disk's chain to base the new diff on */
2095
2096	ComObjPtr<HardDisk> base;
2097	ComObjPtr<Snapshot> snap = mData->mCurrentSnapshot;
2098	while (snap)
2099	{
2100	AutoReadLock snapLock (snap);
2101
2102	const HDData::AttachmentList &snapAtts =
2103	snap->data().mMachine->mHDData->mAttachments;
2104
2105	HDData::AttachmentList::const_iterator foundIt = snapAtts.end();
2106	uint32_t foundLevel = 0;
2107
2108	for (HDData::AttachmentList::const_iterator
2109	it = snapAtts.begin(); it != snapAtts.end(); ++ it)
2110	{
2111	uint32_t level = 0;
2112	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2113	{
2114	/* matched device, channel and bus (i.e. attached to the
2115	* same place) will win and immediately stop the search;
2116	* otherwise the attachment that has the youngest
2117	* descendant of hd will be used
2118	*/
2119	if ((*it)->device() == aDevice &&
2120	(*it)->port() == aControllerPort &&
2121	(*it)->controller() == aControllerName)
2122	{
2123	foundIt = it;
2124	break;
2125	}
2126	else
2127	if (foundIt == snapAtts.end() \|\|
2128	level > foundLevel /* prefer younger */)
2129	{
2130	foundIt = it;
2131	foundLevel = level;
2132	}
2133	}
2134	}
2135
2136	if (foundIt != snapAtts.end())
2137	{
2138	base = (*foundIt)->hardDisk();
2139	break;
2140	}
2141
2142	snap = snap->parent();
2143	}
2144
2145	/* found a suitable diff, use it as a base */
2146	if (!base.isNull())
2147	{
2148	hd = base;
2149	hdCaller.attach (hd);
2150	CheckComRCReturnRC (hdCaller.rc());
2151	hdLock.attach (hd);
2152	}
2153	}
2154
2155	ComObjPtr<HardDisk> diff;
2156	diff.createObject();
2157	rc = diff->init(mParent,
2158	hd->preferredDiffFormat(),
2159	BstrFmt ("%ls"RTPATH_SLASH_STR,
2160	mUserData->mSnapshotFolderFull.raw()));
2161	CheckComRCReturnRC (rc);
2162
2163	/* make sure the hard disk is not modified before createDiffStorage() */
2164	rc = hd->LockRead (NULL);
2165	CheckComRCReturnRC (rc);
2166
2167	/* will leave the lock before the potentially lengthy operation, so
2168	* protect with the special state */
2169	MachineState_T oldState = mData->mMachineState;
2170	setMachineState (MachineState_SettingUp);
2171
2172	hdLock.leave();
2173	alock.leave();
2174	vboxLock.unlock();
2175
2176	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard);
2177
2178	alock.enter();
2179	hdLock.enter();
2180
2181	setMachineState (oldState);
2182
2183	hd->UnlockRead (NULL);
2184
2185	CheckComRCReturnRC (rc);
2186
2187	/* use the created diff for the actual attachment */
2188	hd = diff;
2189	hdCaller.attach (hd);
2190	CheckComRCReturnRC (hdCaller.rc());
2191	hdLock.attach (hd);
2192	}
2193	while (0);
2194
2195	ComObjPtr<HardDiskAttachment> attachment;
2196	attachment.createObject();
2197	rc = attachment->init (hd, aControllerName, aControllerPort, aDevice, indirect);
2198	CheckComRCReturnRC (rc);
2199
2200	if (associate)
2201	{
2202	/* as the last step, associate the hard disk to the VM */
2203	rc = hd->attachTo (mData->mUuid);
2204	/* here we can fail because of Deleting, or being in process of
2205	* creating a Diff */
2206	CheckComRCReturnRC (rc);
2207	}
2208
2209	/* sucsess: finally remember the attachment */
2210	mHDData.backup();
2211	mHDData->mAttachments.push_back (attachment);
2212
2213	return rc;
2214	}
2215
2216	STDMETHODIMP Machine::GetHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2217	LONG aDevice, IHardDisk **aHardDisk)
2218	{
2219	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2220	aControllerName, aControllerPort, aDevice));
2221
2222	CheckComArgNotNull (aControllerName);
2223	CheckComArgOutPointerValid (aHardDisk);
2224
2225	AutoCaller autoCaller (this);
2226	CheckComRCReturnRC (autoCaller.rc());
2227
2228	AutoReadLock alock (this);
2229
2230	*aHardDisk = NULL;
2231
2232	HDData::AttachmentList::const_iterator it =
2233	std::find_if (mHDData->mAttachments.begin(),
2234	mHDData->mAttachments.end(),
2235	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2236
2237	if (it == mHDData->mAttachments.end())
2238	return setError (VBOX_E_OBJECT_NOT_FOUND,
2239	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2240	aDevice, aControllerPort, aControllerName);
2241
2242	(*it)->hardDisk().queryInterfaceTo (aHardDisk);
2243
2244	return S_OK;
2245	}
2246
2247	STDMETHODIMP Machine::DetachHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2248	LONG aDevice)
2249	{
2250	CheckComArgNotNull (aControllerName);
2251
2252	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2253	aControllerName, aControllerPort, aDevice));
2254
2255	AutoCaller autoCaller (this);
2256	CheckComRCReturnRC (autoCaller.rc());
2257
2258	AutoWriteLock alock (this);
2259
2260	HRESULT rc = checkStateDependency (MutableStateDep);
2261	CheckComRCReturnRC (rc);
2262
2263	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
2264
2265	if (Global::IsOnlineOrTransient (mData->mMachineState))
2266	return setError (VBOX_E_INVALID_VM_STATE,
2267	tr ("Invalid machine state: %d"), mData->mMachineState);
2268
2269	HDData::AttachmentList::const_iterator it =
2270	std::find_if (mHDData->mAttachments.begin(),
2271	mHDData->mAttachments.end(),
2272	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2273
2274	if (it == mHDData->mAttachments.end())
2275	return setError (VBOX_E_OBJECT_NOT_FOUND,
2276	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2277	aDevice, aControllerPort, aControllerName);
2278
2279	ComObjPtr<HardDiskAttachment> hda = *it;
2280	ComObjPtr<HardDisk> hd = hda->hardDisk();
2281
2282	if (hda->isImplicit())
2283	{
2284	/* attempt to implicitly delete the implicitly created diff */
2285
2286	/// @todo move the implicit flag from HardDiskAttachment to HardDisk
2287	/// and forbid any hard disk operation when it is implicit. Or maybe
2288	/// a special media state for it to make it even more simple.
2289
2290	Assert (mHDData.isBackedUp());
2291
2292	/* will leave the lock before the potentially lengthy operation, so
2293	* protect with the special state */
2294	MachineState_T oldState = mData->mMachineState;
2295	setMachineState (MachineState_SettingUp);
2296
2297	alock.leave();
2298
2299	rc = hd->deleteStorageAndWait();
2300
2301	alock.enter();
2302
2303	setMachineState (oldState);
2304
2305	CheckComRCReturnRC (rc);
2306	}
2307
2308	mHDData.backup();
2309
2310	/* we cannot use erase (it) below because backup() above will create
2311	* a copy of the list and make this copy active, but the iterator
2312	* still refers to the original and is not valid for the copy */
2313	mHDData->mAttachments.remove (hda);
2314
2315	return S_OK;
2316	}
2317
2318	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
2319	{
2320	CheckComArgOutPointerValid (port);
2321	CheckComArgExpr (slot, slot < RT_ELEMENTS (mSerialPorts));
2322
2323	AutoCaller autoCaller (this);
2324	CheckComRCReturnRC (autoCaller.rc());
2325
2326	AutoReadLock alock (this);
2327
2328	mSerialPorts [slot].queryInterfaceTo (port);
2329
2330	return S_OK;
2331	}
2332
2333	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
2334	{
2335	CheckComArgOutPointerValid (port);
2336	CheckComArgExpr (slot, slot < RT_ELEMENTS (mParallelPorts));
2337
2338	AutoCaller autoCaller (this);
2339	CheckComRCReturnRC (autoCaller.rc());
2340
2341	AutoReadLock alock (this);
2342
2343	mParallelPorts [slot].queryInterfaceTo (port);
2344
2345	return S_OK;
2346	}
2347
2348	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
2349	{
2350	CheckComArgOutPointerValid (adapter);
2351	CheckComArgExpr (slot, slot < RT_ELEMENTS (mNetworkAdapters));
2352
2353	AutoCaller autoCaller (this);
2354	CheckComRCReturnRC (autoCaller.rc());
2355
2356	AutoReadLock alock (this);
2357
2358	mNetworkAdapters [slot].queryInterfaceTo (adapter);
2359
2360	return S_OK;
2361	}
2362
2363	/**
2364	* @note Locks this object for reading.
2365	*/
2366	STDMETHODIMP Machine::GetNextExtraDataKey (IN_BSTR aKey, BSTR aNextKey, BSTR aNextValue)
2367	{
2368	CheckComArgOutPointerValid (aNextKey);
2369
2370	AutoCaller autoCaller (this);
2371	CheckComRCReturnRC (autoCaller.rc());
2372
2373	/* serialize file access (prevent writes) */
2374	AutoReadLock alock (this);
2375
2376	/* start with nothing found */
2377	*aNextKey = NULL;
2378	if (aNextValue)
2379	*aNextValue = NULL;
2380
2381	/* if we're ready and isConfigLocked() is FALSE then it means
2382	* that no config file exists yet, so return shortly */
2383	if (!isConfigLocked())
2384	return S_OK;
2385
2386	HRESULT rc = S_OK;
2387
2388	try
2389	{
2390	using namespace settings;
2391	using namespace xml;
2392
2393	/* load the settings file (we don't reuse the existing handle but
2394	* request a new one to allow for concurrent multithreaded reads) */
2395	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2396	XmlTreeBackend tree;
2397
2398	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2399	CheckComRCReturnRC (rc);
2400
2401	Key machineNode = tree.rootKey().key ("Machine");
2402	Key extraDataNode = machineNode.findKey ("ExtraData");
2403
2404	if (!extraDataNode.isNull())
2405	{
2406	Key::List items = extraDataNode.keys ("ExtraDataItem");
2407	if (items.size())
2408	{
2409	for (Key::List::const_iterator it = items.begin();
2410	it != items.end(); ++ it)
2411	{
2412	Bstr key = (*it).stringValue ("name");
2413
2414	/* if we're supposed to return the first one */
2415	if (aKey == NULL)
2416	{
2417	key.cloneTo (aNextKey);
2418	if (aNextValue)
2419	{
2420	Bstr val = (*it).stringValue ("value");
2421	val.cloneTo (aNextValue);
2422	}
2423	return S_OK;
2424	}
2425
2426	/* did we find the key we're looking for? */
2427	if (key == aKey)
2428	{
2429	++ it;
2430	/* is there another item? */
2431	if (it != items.end())
2432	{
2433	Bstr key = (*it).stringValue ("name");
2434	key.cloneTo (aNextKey);
2435	if (aNextValue)
2436	{
2437	Bstr val = (*it).stringValue ("value");
2438	val.cloneTo (aNextValue);
2439	}
2440	}
2441	/* else it's the last one, arguments are already NULL */
2442	return S_OK;
2443	}
2444	}
2445	}
2446	}
2447
2448	/* Here we are when a) there are no items at all or b) there are items
2449	* but none of them equals the requested non-NULL key. b) is an
2450	* error as well as a) if the key is non-NULL. When the key is NULL
2451	* (which is the case only when there are no items), we just fall
2452	* through to return NULLs and S_OK. */
2453
2454	if (aKey != NULL)
2455	return setError (VBOX_E_OBJECT_NOT_FOUND,
2456	tr ("Could not find the extra data key '%ls'"), aKey);
2457	}
2458	catch (...)
2459	{
2460	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2461	}
2462
2463	return rc;
2464	}
2465
2466	/**
2467	* @note Locks this object for reading.
2468	*/
2469	STDMETHODIMP Machine::GetExtraData (IN_BSTR aKey, BSTR *aValue)
2470	{
2471	CheckComArgNotNull (aKey);
2472	CheckComArgOutPointerValid (aValue);
2473
2474	AutoCaller autoCaller (this);
2475	CheckComRCReturnRC (autoCaller.rc());
2476
2477	/* serialize file access (prevent writes) */
2478	AutoReadLock alock (this);
2479
2480	/* start with nothing found */
2481	*aValue = NULL;
2482
2483	/* if we're ready and isConfigLocked() is FALSE then it means
2484	* that no config file exists yet, so return shortly */
2485	if (!isConfigLocked())
2486	return S_OK;
2487
2488	Utf8Str val;
2489	HRESULT rc = getExtraData(Utf8Str(aKey), val);
2490	if (SUCCEEDED(rc))
2491	val.cloneTo (aValue);
2492
2493	return rc;
2494	}
2495
2496	HRESULT Machine::getExtraData(const Utf8Str &aKey, Utf8Str &aValue)
2497	{
2498	HRESULT rc = S_OK;
2499
2500	try
2501	{
2502	using namespace settings;
2503	using namespace xml;
2504
2505	/* load the settings file (we don't reuse the existing handle but
2506	* request a new one to allow for concurrent multithreaded reads) */
2507	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2508	XmlTreeBackend tree;
2509
2510	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2511	CheckComRCReturnRC (rc);
2512
2513	Key machineNode = tree.rootKey().key ("Machine");
2514	Key extraDataNode = machineNode.findKey ("ExtraData");
2515
2516	if (!extraDataNode.isNull())
2517	{
2518	/* check if the key exists */
2519	Key::List items = extraDataNode.keys ("ExtraDataItem");
2520	for (Key::List::const_iterator it = items.begin();
2521	it != items.end(); ++ it)
2522	{
2523	if (aKey == (*it).stringValue ("name"))
2524	{
2525	aValue = (*it).stringValue ("value");
2526	break;
2527	}
2528	}
2529	}
2530	}
2531	catch (...)
2532	{
2533	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2534	}
2535
2536	return rc;
2537	}
2538
2539	/**
2540	* @note Locks mParent for writing + this object for writing.
2541	*/
2542	STDMETHODIMP Machine::SetExtraData (IN_BSTR aKey, IN_BSTR aValue)
2543	{
2544	CheckComArgNotNull (aKey);
2545
2546	AutoCaller autoCaller (this);
2547	CheckComRCReturnRC (autoCaller.rc());
2548
2549	/* VirtualBox::onExtraDataCanChange() and saveSettings() need mParent
2550	* lock (saveSettings() needs a write one). This object's write lock is
2551	* also necessary to serialize file access (prevent concurrent reads and
2552	* writes). */
2553	AutoMultiWriteLock2 alock (mParent, this);
2554
2555	if (mType == IsSnapshotMachine)
2556	{
2557	HRESULT rc = checkStateDependency (MutableStateDep);
2558	CheckComRCReturnRC (rc);
2559	}
2560
2561	bool changed = false;
2562	HRESULT rc = S_OK;
2563
2564	/* If we're ready and isConfigLocked() is FALSE then it means that no
2565	* config file exists yet, so call saveSettings() to create one. */
2566	if (!isConfigLocked())
2567	{
2568	rc = saveSettings();
2569	CheckComRCReturnRC (rc);
2570	}
2571
2572	try
2573	{
2574	using namespace settings;
2575	using namespace xml;
2576
2577	/* load the settings file */
2578	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
2579	XmlTreeBackend tree;
2580
2581	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
2582	CheckComRCReturnRC (rc);
2583
2584	const Utf8Str key = aKey;
2585	Bstr oldVal;
2586
2587	Key machineNode = tree.rootKey().key ("Machine");
2588	Key extraDataNode = machineNode.createKey ("ExtraData");
2589	Key extraDataItemNode;
2590
2591	Key::List items = extraDataNode.keys ("ExtraDataItem");
2592	for (Key::List::const_iterator it = items.begin();
2593	it != items.end(); ++ it)
2594	{
2595	if (key == (*it).stringValue ("name"))
2596	{
2597	extraDataItemNode = *it;
2598	oldVal = (*it).stringValue ("value");
2599	break;
2600	}
2601	}
2602
2603	/* When no key is found, oldVal is null */
2604	changed = oldVal != aValue;
2605
2606	if (changed)
2607	{
2608	/* ask for permission from all listeners */
2609	Bstr error;
2610	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, aValue, error))
2611	{
2612	const char *sep = error.isEmpty() ? "" : ": ";
2613	CBSTR err = error.isNull() ? (CBSTR) L"" : error.raw();
2614	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2615	sep, err));
2616	return setError (E_ACCESSDENIED,
2617	tr ("Could not set extra data because someone refused "
2618	"the requested change of '%ls' to '%ls'%s%ls"),
2619	aKey, aValue, sep, err);
2620	}
2621
2622	if (aValue != NULL)
2623	{
2624	if (extraDataItemNode.isNull())
2625	{
2626	extraDataItemNode = extraDataNode.appendKey ("ExtraDataItem");
2627	extraDataItemNode.setStringValue ("name", key);
2628	}
2629	extraDataItemNode.setStringValue ("value", Utf8Str (aValue));
2630	}
2631	else
2632	{
2633	/* an old value does for sure exist here (XML schema
2634	* guarantees that "value" may not absent in the
2635	* <ExtraDataItem> element) */
2636	Assert (!extraDataItemNode.isNull());
2637	extraDataItemNode.zap();
2638	}
2639
2640	/* save settings on success */
2641	rc = VirtualBox::saveSettingsTree (tree, file,
2642	mData->mSettingsFileVersion);
2643	CheckComRCReturnRC (rc);
2644	}
2645	}
2646	catch (...)
2647	{
2648	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2649	}
2650
2651	/* fire a notification */
2652	if (SUCCEEDED (rc) && changed)
2653	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2654
2655	return rc;
2656	}
2657
2658	STDMETHODIMP Machine::SaveSettings()
2659	{
2660	AutoCaller autoCaller (this);
2661	CheckComRCReturnRC (autoCaller.rc());
2662
2663	/* saveSettings() needs mParent lock */
2664	AutoMultiWriteLock2 alock (mParent, this);
2665
2666	/* when there was auto-conversion, we want to save the file even if
2667	* the VM is saved */
2668	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2669	MutableOrSavedStateDep : MutableStateDep;
2670
2671	HRESULT rc = checkStateDependency (dep);
2672	CheckComRCReturnRC (rc);
2673
2674	/* the settings file path may never be null */
2675	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2676
2677	/* save all VM data excluding snapshots */
2678	return saveSettings();
2679	}
2680
2681	STDMETHODIMP Machine::SaveSettingsWithBackup (BSTR *aBakFileName)
2682	{
2683	CheckComArgOutPointerValid (aBakFileName);
2684
2685	AutoCaller autoCaller (this);
2686	CheckComRCReturnRC (autoCaller.rc());
2687
2688	/* saveSettings() needs mParent lock */
2689	AutoMultiWriteLock2 alock (mParent, this);
2690
2691	/* when there was auto-conversion, we want to save the file even if
2692	* the VM is saved */
2693	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2694	MutableOrSavedStateDep : MutableStateDep;
2695
2696	HRESULT rc = checkStateDependency (dep);
2697	CheckComRCReturnRC (rc);
2698
2699	/* the settings file path may never be null */
2700	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2701
2702	/* perform backup only when there was auto-conversion */
2703	if (mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL)
2704	{
2705	Bstr bakFileName;
2706
2707	HRESULT rc = VirtualBox::backupSettingsFile (mData->mConfigFileFull,
2708	mData->mSettingsFileVersion,
2709	bakFileName);
2710	CheckComRCReturnRC (rc);
2711
2712	bakFileName.cloneTo (aBakFileName);
2713	}
2714
2715	/* save all VM data excluding snapshots */
2716	return saveSettings();
2717	}
2718
2719	STDMETHODIMP Machine::DiscardSettings()
2720	{
2721	AutoCaller autoCaller (this);
2722	CheckComRCReturnRC (autoCaller.rc());
2723
2724	AutoWriteLock alock (this);
2725
2726	HRESULT rc = checkStateDependency (MutableStateDep);
2727	CheckComRCReturnRC (rc);
2728
2729	/*
2730	* during this rollback, the session will be notified if data has
2731	* been actually changed
2732	*/
2733	rollback (true /* aNotify */);
2734
2735	return S_OK;
2736	}
2737
2738	STDMETHODIMP Machine::DeleteSettings()
2739	{
2740	AutoCaller autoCaller (this);
2741	CheckComRCReturnRC (autoCaller.rc());
2742
2743	AutoWriteLock alock (this);
2744
2745	HRESULT rc = checkStateDependency (MutableStateDep);
2746	CheckComRCReturnRC (rc);
2747
2748	if (mData->mRegistered)
2749	return setError (VBOX_E_INVALID_VM_STATE,
2750	tr ("Cannot delete settings of a registered machine"));
2751
2752	/* delete the settings only when the file actually exists */
2753	if (isConfigLocked())
2754	{
2755	unlockConfig();
2756	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2757	if (RT_FAILURE (vrc))
2758	return setError (VBOX_E_IPRT_ERROR,
2759	tr ("Could not delete the settings file '%ls' (%Rrc)"),
2760	mData->mConfigFileFull.raw(), vrc);
2761
2762	/* delete the Logs folder, nothing important should be left
2763	* there (we don't check for errors because the user might have
2764	* some private files there that we don't want to delete) */
2765	Utf8Str logFolder;
2766	getLogFolder (logFolder);
2767	Assert (!logFolder.isEmpty());
2768	if (RTDirExists (logFolder))
2769	{
2770	/* Delete all VBox.log[.N] files from the Logs folder
2771	* (this must be in sync with the rotation logic in
2772	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2773	* files that may have been created by the GUI. */
2774	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2775	RTFileDelete (log);
2776	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2777	RTFileDelete (log);
2778	for (int i = 3; i >= 0; i--)
2779	{
2780	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2781	RTFileDelete (log);
2782	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2783	RTFileDelete (log);
2784	}
2785
2786	RTDirRemove (logFolder);
2787	}
2788
2789	/* delete the Snapshots folder, nothing important should be left
2790	* there (we don't check for errors because the user might have
2791	* some private files there that we don't want to delete) */
2792	Utf8Str snapshotFolder = mUserData->mSnapshotFolderFull;
2793	Assert (!snapshotFolder.isEmpty());
2794	if (RTDirExists (snapshotFolder))
2795	RTDirRemove (snapshotFolder);
2796
2797	/* delete the directory that contains the settings file, but only
2798	* if it matches the VM name (i.e. a structure created by default in
2799	* prepareSaveSettings()) */
2800	{
2801	Utf8Str settingsDir;
2802	if (isInOwnDir (&settingsDir))
2803	RTDirRemove (settingsDir);
2804	}
2805	}
2806
2807	return S_OK;
2808	}
2809
2810	STDMETHODIMP Machine::GetSnapshot (IN_BSTR aId, ISnapshot **aSnapshot)
2811	{
2812	CheckComArgOutPointerValid (aSnapshot);
2813
2814	AutoCaller autoCaller (this);
2815	CheckComRCReturnRC (autoCaller.rc());
2816
2817	AutoReadLock alock (this);
2818
2819	Guid id(aId);
2820	ComObjPtr <Snapshot> snapshot;
2821
2822	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2823	snapshot.queryInterfaceTo (aSnapshot);
2824
2825	return rc;
2826	}
2827
2828	STDMETHODIMP Machine::FindSnapshot (IN_BSTR aName, ISnapshot **aSnapshot)
2829	{
2830	CheckComArgNotNull (aName);
2831	CheckComArgOutPointerValid (aSnapshot);
2832
2833	AutoCaller autoCaller (this);
2834	CheckComRCReturnRC (autoCaller.rc());
2835
2836	AutoReadLock alock (this);
2837
2838	ComObjPtr <Snapshot> snapshot;
2839
2840	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2841	snapshot.queryInterfaceTo (aSnapshot);
2842
2843	return rc;
2844	}
2845
2846	STDMETHODIMP Machine::SetCurrentSnapshot (IN_BSTR /* aId */)
2847	{
2848	/// @todo (dmik) don't forget to set
2849	// mData->mCurrentStateModified to FALSE
2850
2851	return setError (E_NOTIMPL, "Not implemented");
2852	}
2853
2854	STDMETHODIMP
2855	Machine::CreateSharedFolder (IN_BSTR aName, IN_BSTR aHostPath, BOOL aWritable)
2856	{
2857	CheckComArgNotNull (aName);
2858	CheckComArgNotNull (aHostPath);
2859
2860	AutoCaller autoCaller (this);
2861	CheckComRCReturnRC (autoCaller.rc());
2862
2863	AutoWriteLock alock (this);
2864
2865	HRESULT rc = checkStateDependency (MutableStateDep);
2866	CheckComRCReturnRC (rc);
2867
2868	ComObjPtr <SharedFolder> sharedFolder;
2869	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2870	if (SUCCEEDED (rc))
2871	return setError (VBOX_E_OBJECT_IN_USE,
2872	tr ("Shared folder named '%ls' already exists"), aName);
2873
2874	sharedFolder.createObject();
2875	rc = sharedFolder->init (machine(), aName, aHostPath, aWritable);
2876	CheckComRCReturnRC (rc);
2877
2878	mHWData.backup();
2879	mHWData->mSharedFolders.push_back (sharedFolder);
2880
2881	/* inform the direct session if any */
2882	alock.leave();
2883	onSharedFolderChange();
2884
2885	return S_OK;
2886	}
2887
2888	STDMETHODIMP Machine::RemoveSharedFolder (IN_BSTR aName)
2889	{
2890	CheckComArgNotNull (aName);
2891
2892	AutoCaller autoCaller (this);
2893	CheckComRCReturnRC (autoCaller.rc());
2894
2895	AutoWriteLock alock (this);
2896
2897	HRESULT rc = checkStateDependency (MutableStateDep);
2898	CheckComRCReturnRC (rc);
2899
2900	ComObjPtr <SharedFolder> sharedFolder;
2901	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2902	CheckComRCReturnRC (rc);
2903
2904	mHWData.backup();
2905	mHWData->mSharedFolders.remove (sharedFolder);
2906
2907	/* inform the direct session if any */
2908	alock.leave();
2909	onSharedFolderChange();
2910
2911	return S_OK;
2912	}
2913
2914	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2915	{
2916	CheckComArgOutPointerValid (aCanShow);
2917
2918	/* start with No */
2919	*aCanShow = FALSE;
2920
2921	AutoCaller autoCaller (this);
2922	AssertComRCReturnRC (autoCaller.rc());
2923
2924	ComPtr <IInternalSessionControl> directControl;
2925	{
2926	AutoReadLock alock (this);
2927
2928	if (mData->mSession.mState != SessionState_Open)
2929	return setError (VBOX_E_INVALID_VM_STATE,
2930	tr ("Machine session is not open (session state: %d)"),
2931	mData->mSession.mState);
2932
2933	directControl = mData->mSession.mDirectControl;
2934	}
2935
2936	/* ignore calls made after #OnSessionEnd() is called */
2937	if (!directControl)
2938	return S_OK;
2939
2940	ULONG64 dummy;
2941	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2942	}
2943
2944	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2945	{
2946	CheckComArgOutPointerValid (aWinId);
2947
2948	AutoCaller autoCaller (this);
2949	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2950
2951	ComPtr <IInternalSessionControl> directControl;
2952	{
2953	AutoReadLock alock (this);
2954
2955	if (mData->mSession.mState != SessionState_Open)
2956	return setError (E_FAIL,
2957	tr ("Machine session is not open (session state: %d)"),
2958	mData->mSession.mState);
2959
2960	directControl = mData->mSession.mDirectControl;
2961	}
2962
2963	/* ignore calls made after #OnSessionEnd() is called */
2964	if (!directControl)
2965	return S_OK;
2966
2967	BOOL dummy;
2968	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2969	}
2970
2971	STDMETHODIMP Machine::GetGuestProperty (IN_BSTR aName, BSTR aValue, ULONG64 aTimestamp, BSTR *aFlags)
2972	{
2973	#if !defined (VBOX_WITH_GUEST_PROPS)
2974	ReturnComNotImplemented();
2975	#else
2976	CheckComArgNotNull (aName);
2977	CheckComArgOutPointerValid (aValue);
2978	CheckComArgOutPointerValid (aTimestamp);
2979	CheckComArgOutPointerValid (aFlags);
2980
2981	AutoCaller autoCaller (this);
2982	CheckComRCReturnRC (autoCaller.rc());
2983
2984	AutoReadLock alock (this);
2985
2986	using namespace guestProp;
2987	HRESULT rc = E_FAIL;
2988
2989	if (!mHWData->mPropertyServiceActive)
2990	{
2991	bool found = false;
2992	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
2993	(it != mHWData->mGuestProperties.end()) && !found; ++it)
2994	{
2995	if (it->mName == aName)
2996	{
2997	char szFlags[MAX_FLAGS_LEN + 1];
2998	it->mValue.cloneTo (aValue);
2999	*aTimestamp = it->mTimestamp;
3000	writeFlags (it->mFlags, szFlags);
3001	Bstr (szFlags).cloneTo (aFlags);
3002	found = true;
3003	}
3004	}
3005	rc = S_OK;
3006	}
3007	else
3008	{
3009	ComPtr <IInternalSessionControl> directControl =
3010	mData->mSession.mDirectControl;
3011
3012	/* just be on the safe side when calling another process */
3013	alock.unlock();
3014
3015	/* fail if we were called after #OnSessionEnd() is called. This is a
3016	* silly race condition. */
3017
3018	if (!directControl)
3019	rc = E_FAIL;
3020	else
3021	rc = directControl->AccessGuestProperty (aName, NULL, NULL,
3022	false /* isSetter */,
3023	aValue, aTimestamp, aFlags);
3024	}
3025	return rc;
3026	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3027	}
3028
3029	STDMETHODIMP Machine::GetGuestPropertyValue (IN_BSTR aName, BSTR *aValue)
3030	{
3031	ULONG64 dummyTimestamp;
3032	BSTR dummyFlags;
3033	return GetGuestProperty (aName, aValue, &dummyTimestamp, &dummyFlags);
3034	}
3035
3036	STDMETHODIMP Machine::GetGuestPropertyTimestamp (IN_BSTR aName, ULONG64 *aTimestamp)
3037	{
3038	BSTR dummyValue;
3039	BSTR dummyFlags;
3040	return GetGuestProperty (aName, &dummyValue, aTimestamp, &dummyFlags);
3041	}
3042
3043	STDMETHODIMP Machine::SetGuestProperty (IN_BSTR aName, IN_BSTR aValue, IN_BSTR aFlags)
3044	{
3045	#if !defined (VBOX_WITH_GUEST_PROPS)
3046	ReturnComNotImplemented();
3047	#else
3048	using namespace guestProp;
3049
3050	CheckComArgNotNull (aName);
3051	if ((aValue != NULL) && !VALID_PTR (aValue))
3052	return E_INVALIDARG;
3053	if ((aFlags != NULL) && !VALID_PTR (aFlags))
3054	return E_INVALIDARG;
3055
3056	Utf8Str utf8Name (aName);
3057	Utf8Str utf8Flags (aFlags);
3058	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
3059	if ( utf8Name.isNull()
3060	\|\| ((aFlags != NULL) && utf8Flags.isNull())
3061	\|\| utf8Patterns.isNull()
3062	)
3063	return E_OUTOFMEMORY;
3064	bool matchAll = false;
3065	if (0 == utf8Patterns.length())
3066	matchAll = true;
3067
3068	uint32_t fFlags = NILFLAG;
3069	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags))
3070	)
3071	return setError (E_INVALIDARG, tr ("Invalid flag values: '%ls'"),
3072	aFlags);
3073
3074	AutoCaller autoCaller (this);
3075	CheckComRCReturnRC (autoCaller.rc());
3076
3077	AutoWriteLock alock (this);
3078
3079	HRESULT rc = checkStateDependency (MutableStateDep);
3080	CheckComRCReturnRC (rc);
3081
3082	rc = S_OK;
3083
3084	if (!mHWData->mPropertyServiceActive)
3085	{
3086	bool found = false;
3087	HWData::GuestProperty property;
3088	property.mFlags = NILFLAG;
3089	if (fFlags & TRANSIENT)
3090	rc = setError (VBOX_E_INVALID_OBJECT_STATE,
3091	tr ("Cannot set a transient property when the "
3092	"machine is not running"));
3093	if (SUCCEEDED (rc))
3094	{
3095	for (HWData::GuestPropertyList::iterator it =
3096	mHWData->mGuestProperties.begin();
3097	it != mHWData->mGuestProperties.end(); ++ it)
3098	if (it->mName == aName)
3099	{
3100	property = *it;
3101	if (it->mFlags & (RDONLYHOST))
3102	rc = setError (E_ACCESSDENIED,
3103	tr ("The property '%ls' cannot be changed by the host"),
3104	aName);
3105	else
3106	{
3107	mHWData.backup();
3108	/* The backup() operation invalidates our iterator, so
3109	* get a new one. */
3110	for (it = mHWData->mGuestProperties.begin();
3111	it->mName != aName; ++ it)
3112	;
3113	mHWData->mGuestProperties.erase (it);
3114	}
3115	found = true;
3116	break;
3117	}
3118	}
3119	if (found && SUCCEEDED (rc))
3120	{
3121	if (aValue != NULL)
3122	{
3123	RTTIMESPEC time;
3124	property.mValue = aValue;
3125	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3126	if (aFlags != NULL)
3127	property.mFlags = fFlags;
3128	mHWData->mGuestProperties.push_back (property);
3129	}
3130	}
3131	else if (SUCCEEDED (rc) && (aValue != NULL))
3132	{
3133	RTTIMESPEC time;
3134	mHWData.backup();
3135	property.mName = aName;
3136	property.mValue = aValue;
3137	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3138	property.mFlags = fFlags;
3139	mHWData->mGuestProperties.push_back (property);
3140	}
3141	if ( SUCCEEDED (rc)
3142	&& ( matchAll
3143	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
3144	utf8Name.raw(), RTSTR_MAX, NULL)
3145	)
3146	)
3147	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
3148	}
3149	else
3150	{
3151	ComPtr <IInternalSessionControl> directControl =
3152	mData->mSession.mDirectControl;
3153
3154	/* just be on the safe side when calling another process */
3155	alock.leave();
3156
3157	BSTR dummy = NULL;
3158	ULONG64 dummy64;
3159	if (!directControl)
3160	rc = E_FAIL;
3161	else
3162	rc = directControl->AccessGuestProperty (aName, aValue, aFlags,
3163	true /* isSetter */,
3164	&dummy, &dummy64, &dummy);
3165	}
3166	return rc;
3167	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3168	}
3169
3170	STDMETHODIMP Machine::SetGuestPropertyValue (IN_BSTR aName, IN_BSTR aValue)
3171	{
3172	return SetGuestProperty (aName, aValue, NULL);
3173	}
3174
3175	STDMETHODIMP Machine::
3176	EnumerateGuestProperties (IN_BSTR aPatterns, ComSafeArrayOut (BSTR, aNames),
3177	ComSafeArrayOut (BSTR, aValues),
3178	ComSafeArrayOut (ULONG64, aTimestamps),
3179	ComSafeArrayOut (BSTR, aFlags))
3180	{
3181	#if !defined (VBOX_WITH_GUEST_PROPS)
3182	ReturnComNotImplemented();
3183	#else
3184	if (!VALID_PTR (aPatterns) && (aPatterns != NULL))
3185	return E_POINTER;
3186
3187	CheckComArgOutSafeArrayPointerValid (aNames);
3188	CheckComArgOutSafeArrayPointerValid (aValues);
3189	CheckComArgOutSafeArrayPointerValid (aTimestamps);
3190	CheckComArgOutSafeArrayPointerValid (aFlags);
3191
3192	AutoCaller autoCaller (this);
3193	CheckComRCReturnRC (autoCaller.rc());
3194
3195	AutoReadLock alock (this);
3196
3197	using namespace guestProp;
3198	HRESULT rc = E_FAIL;
3199
3200	bool matchAll = false;
3201	if ((NULL == aPatterns) \|\| (0 == aPatterns[0]))
3202	matchAll = true;
3203	if (!mHWData->mPropertyServiceActive)
3204	{
3205
3206	/*
3207	* Look for matching patterns and build up a list.
3208	*/
3209	HWData::GuestPropertyList propList;
3210	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3211	it != mHWData->mGuestProperties.end(); ++it)
3212	if ( matchAll
3213	\|\| RTStrSimplePatternMultiMatch (Utf8Str (aPatterns).raw(),
3214	RTSTR_MAX,
3215	Utf8Str (it->mName).raw(),
3216	RTSTR_MAX, NULL)
3217	)
3218	propList.push_back (*it);
3219
3220	/*
3221	* And build up the arrays for returning the property information.
3222	*/
3223	size_t cEntries = propList.size();
3224	SafeArray <BSTR> names (cEntries);
3225	SafeArray <BSTR> values (cEntries);
3226	SafeArray <ULONG64> timestamps (cEntries);
3227	SafeArray <BSTR> flags (cEntries);
3228	size_t iProp = 0;
3229	for (HWData::GuestPropertyList::iterator it = propList.begin();
3230	it != propList.end(); ++it)
3231	{
3232	char szFlags[MAX_FLAGS_LEN + 1];
3233	it->mName.cloneTo (&names[iProp]);
3234	it->mValue.cloneTo (&values[iProp]);
3235	timestamps[iProp] = it->mTimestamp;
3236	writeFlags (it->mFlags, szFlags);
3237	Bstr (szFlags).cloneTo (&flags[iProp]);
3238	++iProp;
3239	}
3240	names.detachTo (ComSafeArrayOutArg (aNames));
3241	values.detachTo (ComSafeArrayOutArg (aValues));
3242	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
3243	flags.detachTo (ComSafeArrayOutArg (aFlags));
3244	rc = S_OK;
3245	}
3246	else
3247	{
3248	ComPtr <IInternalSessionControl> directControl =
3249	mData->mSession.mDirectControl;
3250
3251	/* just be on the safe side when calling another process */
3252	alock.unlock();
3253
3254	if (!directControl)
3255	rc = E_FAIL;
3256	else
3257	rc = directControl->EnumerateGuestProperties (aPatterns,
3258	ComSafeArrayOutArg (aNames),
3259	ComSafeArrayOutArg (aValues),
3260	ComSafeArrayOutArg (aTimestamps),
3261	ComSafeArrayOutArg (aFlags));
3262	}
3263	return rc;
3264	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3265	}
3266
3267	STDMETHODIMP Machine::
3268	GetHardDiskAttachmentsOfController(IN_BSTR aName, ComSafeArrayOut (IHardDiskAttachment *, aAttachments))
3269	{
3270	HDData::AttachmentList atts;
3271
3272	HRESULT rc = getHardDiskAttachmentsOfController(aName, atts);
3273	CheckComRCReturnRC(rc);
3274
3275	SafeIfaceArray<IHardDiskAttachment> attachments (atts);
3276	attachments.detachTo (ComSafeArrayOutArg (aAttachments));
3277
3278	return S_OK;
3279	}
3280
3281	STDMETHODIMP Machine::
3282	AddStorageController(IN_BSTR aName,
3283	StorageBus_T aConnectionType,
3284	IStorageController **controller)
3285	{
3286	CheckComArgStrNotEmptyOrNull(aName);
3287
3288	if ( (aConnectionType <= StorageBus_Null)
3289	\|\| (aConnectionType > StorageBus_SCSI))
3290	return setError (E_INVALIDARG,
3291	tr ("Invalid connection type: %d"),
3292	aConnectionType);
3293
3294	AutoCaller autoCaller (this);
3295	CheckComRCReturnRC (autoCaller.rc());
3296
3297	AutoWriteLock alock (this);
3298
3299	HRESULT rc = checkStateDependency (MutableStateDep);
3300	CheckComRCReturnRC (rc);
3301
3302	/* try to find one with the name first. */
3303	ComObjPtr<StorageController> ctrl;
3304
3305	rc = getStorageControllerByName (aName, ctrl, false /* aSetError */);
3306	if (SUCCEEDED (rc))
3307	return setError (VBOX_E_OBJECT_IN_USE,
3308	tr ("Storage controller named '%ls' already exists"), aName);
3309
3310	ctrl.createObject();
3311	rc = ctrl->init (this, aName, aConnectionType);
3312	CheckComRCReturnRC (rc);
3313
3314	mStorageControllers.backup();
3315	mStorageControllers->push_back (ctrl);
3316
3317	ctrl.queryInterfaceTo(controller);
3318
3319	/* inform the direct session if any */
3320	alock.leave();
3321	onStorageControllerChange();
3322
3323	return S_OK;
3324	}
3325
3326	STDMETHODIMP Machine::
3327	GetStorageControllerByName(IN_BSTR aName, IStorageController **aStorageController)
3328	{
3329	CheckComArgStrNotEmptyOrNull(aName);
3330
3331	AutoCaller autoCaller (this);
3332	CheckComRCReturnRC (autoCaller.rc());
3333
3334	AutoReadLock alock (this);
3335
3336	ComObjPtr <StorageController> ctrl;
3337
3338	HRESULT rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3339	if (SUCCEEDED (rc))
3340	ctrl.queryInterfaceTo (aStorageController);
3341
3342	return rc;
3343	}
3344
3345	STDMETHODIMP Machine::
3346	RemoveStorageController(IN_BSTR aName)
3347	{
3348	CheckComArgStrNotEmptyOrNull(aName);
3349
3350	AutoCaller autoCaller (this);
3351	CheckComRCReturnRC (autoCaller.rc());
3352
3353	AutoWriteLock alock (this);
3354
3355	HRESULT rc = checkStateDependency (MutableStateDep);
3356	CheckComRCReturnRC (rc);
3357
3358	ComObjPtr <StorageController> ctrl;
3359	rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3360	CheckComRCReturnRC (rc);
3361
3362	/* We can remove the controller only if there is no device attached. */
3363	/* check if the device slot is already busy */
3364	for (HDData::AttachmentList::const_iterator
3365	it = mHDData->mAttachments.begin();
3366	it != mHDData->mAttachments.end();
3367	++ it)
3368	{
3369	if (it != mHDData->mAttachments.end())
3370	{
3371	if ((*it)->controller() == aName)
3372	return setError (VBOX_E_OBJECT_IN_USE,
3373	tr ("Storage controller named '%ls' has still devices attached"), aName);
3374	}
3375	}
3376
3377	/* We can remove it now. */
3378	mStorageControllers.backup();
3379
3380	ctrl->unshare();
3381
3382	mStorageControllers->remove (ctrl);
3383
3384	/* inform the direct session if any */
3385	alock.leave();
3386	onStorageControllerChange();
3387
3388	return S_OK;
3389	}
3390
3391	// public methods for internal purposes
3392	/////////////////////////////////////////////////////////////////////////////
3393
3394	/**
3395	* Saves the registry entry of this machine to the given configuration node.
3396	*
3397	* @param aEntryNode Node to save the registry entry to.
3398	*
3399	* @note locks this object for reading.
3400	*/
3401	HRESULT Machine::saveRegistryEntry (settings::Key &aEntryNode)
3402	{
3403	AssertReturn (!aEntryNode.isNull(), E_FAIL);
3404
3405	AutoLimitedCaller autoCaller (this);
3406	AssertComRCReturnRC (autoCaller.rc());
3407
3408	AutoReadLock alock (this);
3409
3410	/* UUID */
3411	aEntryNode.setValue <Guid> ("uuid", mData->mUuid);
3412	/* settings file name (possibly, relative) */
3413	aEntryNode.setValue <Bstr> ("src", mData->mConfigFile);
3414
3415	return S_OK;
3416	}
3417
3418	/**
3419	* Calculates the absolute path of the given path taking the directory of the
3420	* machine settings file as the current directory.
3421	*
3422	* @param aPath Path to calculate the absolute path for.
3423	* @param aResult Where to put the result (used only on success, can be the
3424	* same Utf8Str instance as passed in @a aPath).
3425	* @return IPRT result.
3426	*
3427	* @note Locks this object for reading.
3428	*/
3429	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
3430	{
3431	AutoCaller autoCaller (this);
3432	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3433
3434	AutoReadLock alock (this);
3435
3436	AssertReturn (!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
3437
3438	Utf8Str settingsDir = mData->mConfigFileFull;
3439
3440	RTPathStripFilename (settingsDir.mutableRaw());
3441	char folder [RTPATH_MAX];
3442	int vrc = RTPathAbsEx (settingsDir, aPath, folder, sizeof (folder));
3443	if (RT_SUCCESS (vrc))
3444	aResult = folder;
3445
3446	return vrc;
3447	}
3448
3449	/**
3450	* Tries to calculate the relative path of the given absolute path using the
3451	* directory of the machine settings file as the base directory.
3452	*
3453	* @param aPath Absolute path to calculate the relative path for.
3454	* @param aResult Where to put the result (used only when it's possible to
3455	* make a relative path from the given absolute path; otherwise
3456	* left untouched).
3457	*
3458	* @note Locks this object for reading.
3459	*/
3460	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
3461	{
3462	AutoCaller autoCaller (this);
3463	AssertComRCReturn (autoCaller.rc(), (void) 0);
3464
3465	AutoReadLock alock (this);
3466
3467	AssertReturnVoid (!mData->mConfigFileFull.isNull());
3468
3469	Utf8Str settingsDir = mData->mConfigFileFull;
3470
3471	RTPathStripFilename (settingsDir.mutableRaw());
3472	if (RTPathStartsWith (aPath, settingsDir))
3473	{
3474	/* when assigning, we create a separate Utf8Str instance because both
3475	* aPath and aResult can point to the same memory location when this
3476	* func is called (if we just do aResult = aPath, aResult will be freed
3477	* first, and since its the same as aPath, an attempt to copy garbage
3478	* will be made. */
3479	aResult = Utf8Str (aPath + settingsDir.length() + 1);
3480	}
3481	}
3482
3483	/**
3484	* Returns the full path to the machine's log folder in the
3485	* \a aLogFolder argument.
3486	*/
3487	void Machine::getLogFolder (Utf8Str &aLogFolder)
3488	{
3489	AutoCaller autoCaller (this);
3490	AssertComRCReturnVoid (autoCaller.rc());
3491
3492	AutoReadLock alock (this);
3493
3494	Utf8Str settingsDir;
3495	if (isInOwnDir (&settingsDir))
3496	{
3497	/* Log folder is <Machines>/<VM_Name>/Logs */
3498	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
3499	}
3500	else
3501	{
3502	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
3503	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
3504	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
3505	RTPATH_DELIMITER);
3506	}
3507	}
3508
3509	/**
3510	* @note Locks this object for writing, calls the client process (outside the
3511	* lock).
3512	*/
3513	HRESULT Machine::openSession (IInternalSessionControl *aControl)
3514	{
3515	LogFlowThisFuncEnter();
3516
3517	AssertReturn (aControl, E_FAIL);
3518
3519	AutoCaller autoCaller (this);
3520	CheckComRCReturnRC (autoCaller.rc());
3521
3522	AutoWriteLock alock (this);
3523
3524	if (!mData->mRegistered)
3525	return setError (E_UNEXPECTED,
3526	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3527
3528	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3529
3530	if (mData->mSession.mState == SessionState_Open \|\|
3531	mData->mSession.mState == SessionState_Closing)
3532	return setError (VBOX_E_INVALID_OBJECT_STATE,
3533	tr ("A session for the machine '%ls' is currently open "
3534	"(or being closed)"),
3535	mUserData->mName.raw());
3536
3537	/* may not be busy */
3538	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3539
3540	/* get the session PID */
3541	RTPROCESS pid = NIL_RTPROCESS;
3542	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
3543	aControl->GetPID ((ULONG *) &pid);
3544	Assert (pid != NIL_RTPROCESS);
3545
3546	if (mData->mSession.mState == SessionState_Spawning)
3547	{
3548	/* This machine is awaiting for a spawning session to be opened, so
3549	* reject any other open attempts from processes other than one
3550	* started by #openRemoteSession(). */
3551
3552	LogFlowThisFunc (("mSession.mPid=%d(0x%x)\n",
3553	mData->mSession.mPid, mData->mSession.mPid));
3554	LogFlowThisFunc (("session.pid=%d(0x%x)\n", pid, pid));
3555
3556	if (mData->mSession.mPid != pid)
3557	return setError (E_ACCESSDENIED,
3558	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
3559	"session with the machine named '%ls', while only a process "
3560	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
3561	pid, mUserData->mName.raw(), mData->mSession.mPid);
3562	}
3563
3564	/* create a SessionMachine object */
3565	ComObjPtr <SessionMachine> sessionMachine;
3566	sessionMachine.createObject();
3567	HRESULT rc = sessionMachine->init (this);
3568	AssertComRC (rc);
3569
3570	/* NOTE: doing return from this function after this point but
3571	* before the end is forbidden since it may call SessionMachine::uninit()
3572	* (through the ComObjPtr's destructor) which requests the VirtualBox write
3573	* lock while still holding the Machine lock in alock so that a deadlock
3574	* is possible due to the wrong lock order. */
3575
3576	if (SUCCEEDED (rc))
3577	{
3578	#ifdef VBOX_WITH_RESOURCE_USAGE_API
3579	registerMetrics (mParent->performanceCollector(), this, pid);
3580	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
3581
3582	/*
3583	* Set the session state to Spawning to protect against subsequent
3584	* attempts to open a session and to unregister the machine after
3585	* we leave the lock.
3586	*/
3587	SessionState_T origState = mData->mSession.mState;
3588	mData->mSession.mState = SessionState_Spawning;
3589
3590	/*
3591	* Leave the lock before calling the client process -- it will call
3592	* Machine/SessionMachine methods. Leaving the lock here is quite safe
3593	* because the state is Spawning, so that openRemotesession() and
3594	* openExistingSession() calls will fail. This method, called before we
3595	* enter the lock again, will fail because of the wrong PID.
3596	*
3597	* Note that mData->mSession.mRemoteControls accessed outside
3598	* the lock may not be modified when state is Spawning, so it's safe.
3599	*/
3600	alock.leave();
3601
3602	LogFlowThisFunc (("Calling AssignMachine()...\n"));
3603	rc = aControl->AssignMachine (sessionMachine);
3604	LogFlowThisFunc (("AssignMachine() returned %08X\n", rc));
3605
3606	/* The failure may occur w/o any error info (from RPC), so provide one */
3607	if (FAILED (rc))
3608	setError (VBOX_E_VM_ERROR,
3609	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3610
3611	if (SUCCEEDED (rc) && origState == SessionState_Spawning)
3612	{
3613	/* complete the remote session initialization */
3614
3615	/* get the console from the direct session */
3616	ComPtr <IConsole> console;
3617	rc = aControl->GetRemoteConsole (console.asOutParam());
3618	ComAssertComRC (rc);
3619
3620	if (SUCCEEDED (rc) && !console)
3621	{
3622	ComAssert (!!console);
3623	rc = E_FAIL;
3624	}
3625
3626	/* assign machine & console to the remote session */
3627	if (SUCCEEDED (rc))
3628	{
3629	/*
3630	* after openRemoteSession(), the first and the only
3631	* entry in remoteControls is that remote session
3632	*/
3633	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3634	rc = mData->mSession.mRemoteControls.front()->
3635	AssignRemoteMachine (sessionMachine, console);
3636	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3637
3638	/* The failure may occur w/o any error info (from RPC), so provide one */
3639	if (FAILED (rc))
3640	setError (VBOX_E_VM_ERROR,
3641	tr ("Failed to assign the machine to the remote session (%Rrc)"), rc);
3642	}
3643
3644	if (FAILED (rc))
3645	aControl->Uninitialize();
3646	}
3647
3648	/* enter the lock again */
3649	alock.enter();
3650
3651	/* Restore the session state */
3652	mData->mSession.mState = origState;
3653	}
3654
3655	/* finalize spawning anyway (this is why we don't return on errors above) */
3656	if (mData->mSession.mState == SessionState_Spawning)
3657	{
3658	/* Note that the progress object is finalized later */
3659
3660	/* We don't reset mSession.mPid here because it is necessary for
3661	* SessionMachine::uninit() to reap the child process later. */
3662
3663	if (FAILED (rc))
3664	{
3665	/* Close the remote session, remove the remote control from the list
3666	* and reset session state to Closed (@note keep the code in sync
3667	* with the relevant part in openSession()). */
3668
3669	Assert (mData->mSession.mRemoteControls.size() == 1);
3670	if (mData->mSession.mRemoteControls.size() == 1)
3671	{
3672	ErrorInfoKeeper eik;
3673	mData->mSession.mRemoteControls.front()->Uninitialize();
3674	}
3675
3676	mData->mSession.mRemoteControls.clear();
3677	mData->mSession.mState = SessionState_Closed;
3678	}
3679	}
3680	else
3681	{
3682	/* memorize PID of the directly opened session */
3683	if (SUCCEEDED (rc))
3684	mData->mSession.mPid = pid;
3685	}
3686
3687	if (SUCCEEDED (rc))
3688	{
3689	/* memorize the direct session control and cache IUnknown for it */
3690	mData->mSession.mDirectControl = aControl;
3691	mData->mSession.mState = SessionState_Open;
3692	/* associate the SessionMachine with this Machine */
3693	mData->mSession.mMachine = sessionMachine;
3694
3695	/* request an IUnknown pointer early from the remote party for later
3696	* identity checks (it will be internally cached within mDirectControl
3697	* at least on XPCOM) */
3698	ComPtr <IUnknown> unk = mData->mSession.mDirectControl;
3699	NOREF (unk);
3700	}
3701
3702	if (mData->mSession.mProgress)
3703	{
3704	/* finalize the progress after setting the state, for consistency */
3705	mData->mSession.mProgress->notifyComplete (rc);
3706	mData->mSession.mProgress.setNull();
3707	}
3708
3709	/* Leave the lock since SessionMachine::uninit() locks VirtualBox which
3710	* would break the lock order */
3711	alock.leave();
3712
3713	/* uninitialize the created session machine on failure */
3714	if (FAILED (rc))
3715	sessionMachine->uninit();
3716
3717	LogFlowThisFunc (("rc=%08X\n", rc));
3718	LogFlowThisFuncLeave();
3719	return rc;
3720	}
3721
3722	/**
3723	* @note Locks this object for writing, calls the client process
3724	* (inside the lock).
3725	*/
3726	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
3727	IN_BSTR aType, IN_BSTR aEnvironment,
3728	Progress *aProgress)
3729	{
3730	LogFlowThisFuncEnter();
3731
3732	AssertReturn (aControl, E_FAIL);
3733	AssertReturn (aProgress, E_FAIL);
3734
3735	AutoCaller autoCaller (this);
3736	CheckComRCReturnRC (autoCaller.rc());
3737
3738	AutoWriteLock alock (this);
3739
3740	if (!mData->mRegistered)
3741	return setError (E_UNEXPECTED,
3742	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3743
3744	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3745
3746	if (mData->mSession.mState == SessionState_Open \|\|
3747	mData->mSession.mState == SessionState_Spawning \|\|
3748	mData->mSession.mState == SessionState_Closing)
3749	return setError (VBOX_E_INVALID_OBJECT_STATE,
3750	tr ("A session for the machine '%ls' is currently open "
3751	"(or being opened or closed)"),
3752	mUserData->mName.raw());
3753
3754	/* may not be busy */
3755	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3756
3757	/* get the path to the executable */
3758	char path [RTPATH_MAX];
3759	RTPathAppPrivateArch (path, RTPATH_MAX);
3760	size_t sz = strlen (path);
3761	path [sz++] = RTPATH_DELIMITER;
3762	path [sz] = 0;
3763	char *cmd = path + sz;
3764	sz = RTPATH_MAX - sz;
3765
3766	int vrc = VINF_SUCCESS;
3767	RTPROCESS pid = NIL_RTPROCESS;
3768
3769	RTENV env = RTENV_DEFAULT;
3770
3771	if (aEnvironment)
3772	{
3773	char *newEnvStr = NULL;
3774
3775	do
3776	{
3777	/* clone the current environment */
3778	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3779	AssertRCBreakStmt (vrc2, vrc = vrc2);
3780
3781	newEnvStr = RTStrDup (Utf8Str (aEnvironment));
3782	AssertPtrBreakStmt (newEnvStr, vrc = vrc2);
3783
3784	/* put new variables to the environment
3785	* (ignore empty variable names here since RTEnv API
3786	* intentionally doesn't do that) */
3787	char *var = newEnvStr;
3788	for (char p = newEnvStr; p; ++ p)
3789	{
3790	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3791	{
3792	*p = '\0';
3793	if (*var)
3794	{
3795	char *val = strchr (var, '=');
3796	if (val)
3797	{
3798	*val++ = '\0';
3799	vrc2 = RTEnvSetEx (env, var, val);
3800	}
3801	else
3802	vrc2 = RTEnvUnsetEx (env, var);
3803	if (RT_FAILURE (vrc2))
3804	break;
3805	}
3806	var = p + 1;
3807	}
3808	}
3809	if (RT_SUCCESS (vrc2) && *var)
3810	vrc2 = RTEnvPutEx (env, var);
3811
3812	AssertRCBreakStmt (vrc2, vrc = vrc2);
3813	}
3814	while (0);
3815
3816	if (newEnvStr != NULL)
3817	RTStrFree (newEnvStr);
3818	}
3819
3820	Bstr type (aType);
3821
3822	/* Qt is default */
3823	#ifdef VBOX_WITH_QTGUI
3824	if (type == "gui" \|\| type == "GUI/Qt")
3825	{
3826	# ifdef RT_OS_DARWIN /* Avoid Launch Services confusing this with the selector by using a helper app. */
3827	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3828	# else
3829	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3830	# endif
3831	Assert (sz >= sizeof (VirtualBox_exe));
3832	strcpy (cmd, VirtualBox_exe);
3833
3834	Utf8Str idStr = mData->mUuid.toString();
3835	# ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3836	const char * args[] = {path, "--startvm", idStr, 0 };
3837	# else
3838	Utf8Str name = mUserData->mName;
3839	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0 };
3840	# endif
3841	vrc = RTProcCreate (path, args, env, 0, &pid);
3842	}
3843	#else /* !VBOX_WITH_QTGUI */
3844	if (0)
3845	;
3846	#endif /* VBOX_WITH_QTGUI */
3847
3848	else
3849
3850	#ifdef VBOX_WITH_VBOXSDL
3851	if (type == "sdl" \|\| type == "GUI/SDL")
3852	{
3853	const char VBoxSDL_exe[] = "VBoxSDL" HOSTSUFF_EXE;
3854	Assert (sz >= sizeof (VBoxSDL_exe));
3855	strcpy (cmd, VBoxSDL_exe);
3856
3857	Utf8Str idStr = mData->mUuid.toString();
3858	# ifdef RT_OS_WINDOWS
3859	const char * args[] = {path, "--startvm", idStr, 0 };
3860	# else
3861	Utf8Str name = mUserData->mName;
3862	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0 };
3863	# endif
3864	vrc = RTProcCreate (path, args, env, 0, &pid);
3865	}
3866	#else /* !VBOX_WITH_VBOXSDL */
3867	if (0)
3868	;
3869	#endif /* !VBOX_WITH_VBOXSDL */
3870
3871	else
3872
3873	#ifdef VBOX_WITH_HEADLESS
3874	if ( type == "headless"
3875	\|\| type == "capture"
3876	#ifdef VBOX_WITH_VRDP
3877	\|\| type == "vrdp"
3878	#endif
3879	)
3880	{
3881	const char VBoxHeadless_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3882	Assert (sz >= sizeof (VBoxHeadless_exe));
3883	strcpy (cmd, VBoxHeadless_exe);
3884
3885	Utf8Str idStr = mData->mUuid.toString();
3886	/* Leave space for 2 args, as "headless" needs --vrdp off on non-OSE. */
3887	# ifdef RT_OS_WINDOWS
3888	const char * args[] = {path, "--startvm", idStr, 0, 0, 0 };
3889	# else
3890	Utf8Str name = mUserData->mName;
3891	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0, 0, 0 };
3892	# endif
3893	#ifdef VBOX_WITH_VRDP
3894	if (type == "headless")
3895	{
3896	unsigned pos = RT_ELEMENTS(args) - 3;
3897	args[pos++] = "--vrdp";
3898	args[pos] = "off";
3899	}
3900	#endif
3901	if (type == "capture")
3902	{
3903	unsigned pos = RT_ELEMENTS(args) - 3;
3904	args[pos] = "--capture";
3905	}
3906	vrc = RTProcCreate (path, args, env, 0, &pid);
3907	}
3908	#else /* !VBOX_WITH_HEADLESS */
3909	if (0)
3910	;
3911	#endif /* !VBOX_WITH_HEADLESS */
3912	else
3913	{
3914	RTEnvDestroy (env);
3915	return setError (E_INVALIDARG,
3916	tr ("Invalid session type: '%ls'"), aType);
3917	}
3918
3919	RTEnvDestroy (env);
3920
3921	if (RT_FAILURE (vrc))
3922	return setError (VBOX_E_IPRT_ERROR,
3923	tr ("Could not launch a process for the machine '%ls' (%Rrc)"),
3924	mUserData->mName.raw(), vrc);
3925
3926	LogFlowThisFunc (("launched.pid=%d(0x%x)\n", pid, pid));
3927
3928	/*
3929	* Note that we don't leave the lock here before calling the client,
3930	* because it doesn't need to call us back if called with a NULL argument.
3931	* Leaving the lock herer is dangerous because we didn't prepare the
3932	* launch data yet, but the client we've just started may happen to be
3933	* too fast and call openSession() that will fail (because of PID, etc.),
3934	* so that the Machine will never get out of the Spawning session state.
3935	*/
3936
3937	/* inform the session that it will be a remote one */
3938	LogFlowThisFunc (("Calling AssignMachine (NULL)...\n"));
3939	HRESULT rc = aControl->AssignMachine (NULL);
3940	LogFlowThisFunc (("AssignMachine (NULL) returned %08X\n", rc));
3941
3942	if (FAILED (rc))
3943	{
3944	/* restore the session state */
3945	mData->mSession.mState = SessionState_Closed;
3946	/* The failure may occur w/o any error info (from RPC), so provide one */
3947	return setError (VBOX_E_VM_ERROR,
3948	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3949	}
3950
3951	/* attach launch data to the machine */
3952	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3953	mData->mSession.mRemoteControls.push_back (aControl);
3954	mData->mSession.mProgress = aProgress;
3955	mData->mSession.mPid = pid;
3956	mData->mSession.mState = SessionState_Spawning;
3957	mData->mSession.mType = type;
3958
3959	LogFlowThisFuncLeave();
3960	return S_OK;
3961	}
3962
3963	/**
3964	* @note Locks this object for writing, calls the client process
3965	* (outside the lock).
3966	*/
3967	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3968	{
3969	LogFlowThisFuncEnter();
3970
3971	AssertReturn (aControl, E_FAIL);
3972
3973	AutoCaller autoCaller (this);
3974	CheckComRCReturnRC (autoCaller.rc());
3975
3976	AutoWriteLock alock (this);
3977
3978	if (!mData->mRegistered)
3979	return setError (E_UNEXPECTED,
3980	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3981
3982	LogFlowThisFunc (("mSession.state=%d\n", mData->mSession.mState));
3983
3984	if (mData->mSession.mState != SessionState_Open)
3985	return setError (VBOX_E_INVALID_SESSION_STATE,
3986	tr ("The machine '%ls' does not have an open session"),
3987	mUserData->mName.raw());
3988
3989	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
3990
3991	/*
3992	* Get the console from the direct session (note that we don't leave the
3993	* lock here because GetRemoteConsole must not call us back).
3994	*/
3995	ComPtr <IConsole> console;
3996	HRESULT rc = mData->mSession.mDirectControl->
3997	GetRemoteConsole (console.asOutParam());
3998	if (FAILED (rc))
3999	{
4000	/* The failure may occur w/o any error info (from RPC), so provide one */
4001	return setError (VBOX_E_VM_ERROR,
4002	tr ("Failed to get a console object from the direct session (%Rrc)"), rc);
4003	}
4004
4005	ComAssertRet (!console.isNull(), E_FAIL);
4006
4007	ComObjPtr <SessionMachine> sessionMachine = mData->mSession.mMachine;
4008	AssertReturn (!sessionMachine.isNull(), E_FAIL);
4009
4010	/*
4011	* Leave the lock before calling the client process. It's safe here
4012	* since the only thing to do after we get the lock again is to add
4013	* the remote control to the list (which doesn't directly influence
4014	* anything).
4015	*/
4016	alock.leave();
4017
4018	/* attach the remote session to the machine */
4019	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
4020	rc = aControl->AssignRemoteMachine (sessionMachine, console);
4021	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
4022
4023	/* The failure may occur w/o any error info (from RPC), so provide one */
4024	if (FAILED (rc))
4025	return setError (VBOX_E_VM_ERROR,
4026	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
4027
4028	alock.enter();
4029
4030	/* need to revalidate the state after entering the lock again */
4031	if (mData->mSession.mState != SessionState_Open)
4032	{
4033	aControl->Uninitialize();
4034
4035	return setError (VBOX_E_INVALID_SESSION_STATE,
4036	tr ("The machine '%ls' does not have an open session"),
4037	mUserData->mName.raw());
4038	}
4039
4040	/* store the control in the list */
4041	mData->mSession.mRemoteControls.push_back (aControl);
4042
4043	LogFlowThisFuncLeave();
4044	return S_OK;
4045	}
4046
4047	/**
4048	* Returns @c true if the given machine has an open direct session and returns
4049	* the session machine instance and additional session data (on some platforms)
4050	* if so.
4051	*
4052	* Note that when the method returns @c false, the arguments remain unchanged.
4053	*
4054	* @param aMachine Session machine object.
4055	* @param aControl Direct session control object (optional).
4056	* @param aIPCSem Mutex IPC semaphore handle for this machine (optional).
4057	*
4058	* @note locks this object for reading.
4059	*/
4060	#if defined (RT_OS_WINDOWS)
4061	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4062	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4063	HANDLE aIPCSem /= NULL*/,
4064	bool aAllowClosing /= false/)
4065	#elif defined (RT_OS_OS2)
4066	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4067	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4068	HMTX aIPCSem /= NULL*/,
4069	bool aAllowClosing /= false/)
4070	#else
4071	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
4072	ComPtr <IInternalSessionControl> aControl /= NULL*/,
4073	bool aAllowClosing /= false/)
4074	#endif
4075	{
4076	AutoLimitedCaller autoCaller (this);
4077	AssertComRCReturn (autoCaller.rc(), false);
4078
4079	/* just return false for inaccessible machines */
4080	if (autoCaller.state() != Ready)
4081	return false;
4082
4083	AutoReadLock alock (this);
4084
4085	if (mData->mSession.mState == SessionState_Open \|\|
4086	(aAllowClosing && mData->mSession.mState == SessionState_Closing))
4087	{
4088	AssertReturn (!mData->mSession.mMachine.isNull(), false);
4089
4090	aMachine = mData->mSession.mMachine;
4091
4092	if (aControl != NULL)
4093	*aControl = mData->mSession.mDirectControl;
4094
4095	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4096	/* Additional session data */
4097	if (aIPCSem != NULL)
4098	*aIPCSem = aMachine->mIPCSem;
4099	#endif
4100	return true;
4101	}
4102
4103	return false;
4104	}
4105
4106	/**
4107	* Returns @c true if the given machine has an spawning direct session and
4108	* returns and additional session data (on some platforms) if so.
4109	*
4110	* Note that when the method returns @c false, the arguments remain unchanged.
4111	*
4112	* @param aPID PID of the spawned direct session process.
4113	*
4114	* @note locks this object for reading.
4115	*/
4116	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4117	bool Machine::isSessionSpawning (RTPROCESS aPID /= NULL*/)
4118	#else
4119	bool Machine::isSessionSpawning()
4120	#endif
4121	{
4122	AutoLimitedCaller autoCaller (this);
4123	AssertComRCReturn (autoCaller.rc(), false);
4124
4125	/* just return false for inaccessible machines */
4126	if (autoCaller.state() != Ready)
4127	return false;
4128
4129	AutoReadLock alock (this);
4130
4131	if (mData->mSession.mState == SessionState_Spawning)
4132	{
4133	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4134	/* Additional session data */
4135	if (aPID != NULL)
4136	{
4137	AssertReturn (mData->mSession.mPid != NIL_RTPROCESS, false);
4138	*aPID = mData->mSession.mPid;
4139	}
4140	#endif
4141	return true;
4142	}
4143
4144	return false;
4145	}
4146
4147	/**
4148	* Called from the client watcher thread to check for unexpected client process
4149	* death during Session_Spawning state (e.g. before it successfully opened a
4150	* direct session).
4151	*
4152	* On Win32 and on OS/2, this method is called only when we've got the
4153	* direct client's process termination notification, so it always returns @c
4154	* true.
4155	*
4156	* On other platforms, this method returns @c true if the client process is
4157	* terminated and @c false if it's still alive.
4158	*
4159	* @note Locks this object for writing.
4160	*/
4161	bool Machine::checkForSpawnFailure()
4162	{
4163	AutoCaller autoCaller (this);
4164	if (!autoCaller.isOk())
4165	{
4166	/* nothing to do */
4167	LogFlowThisFunc (("Already uninitialized!"));
4168	return true;
4169	}
4170
4171	/* VirtualBox::addProcessToReap() needs a write lock */
4172	AutoMultiWriteLock2 alock (mParent, this);
4173
4174	if (mData->mSession.mState != SessionState_Spawning)
4175	{
4176	/* nothing to do */
4177	LogFlowThisFunc (("Not spawning any more!"));
4178	return true;
4179	}
4180
4181	HRESULT rc = S_OK;
4182
4183	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4184
4185	/* the process was already unexpectedly terminated, we just need to set an
4186	* error and finalize session spawning */
4187	rc = setError (E_FAIL,
4188	tr ("Virtual machine '%ls' has terminated unexpectedly "
4189	"during startup"),
4190	name().raw());
4191	#else
4192
4193	RTPROCSTATUS status;
4194	int vrc = ::RTProcWait (mData->mSession.mPid, RTPROCWAIT_FLAGS_NOBLOCK,
4195	&status);
4196
4197	if (vrc != VERR_PROCESS_RUNNING)
4198	rc = setError (E_FAIL,
4199	tr ("Virtual machine '%ls' has terminated unexpectedly "
4200	"during startup"),
4201	name().raw());
4202	#endif
4203
4204	if (FAILED (rc))
4205	{
4206	/* Close the remote session, remove the remote control from the list
4207	* and reset session state to Closed (@note keep the code in sync with
4208	* the relevant part in checkForSpawnFailure()). */
4209
4210	Assert (mData->mSession.mRemoteControls.size() == 1);
4211	if (mData->mSession.mRemoteControls.size() == 1)
4212	{
4213	ErrorInfoKeeper eik;
4214	mData->mSession.mRemoteControls.front()->Uninitialize();
4215	}
4216
4217	mData->mSession.mRemoteControls.clear();
4218	mData->mSession.mState = SessionState_Closed;
4219
4220	/* finalize the progress after setting the state, for consistency */
4221	mData->mSession.mProgress->notifyComplete (rc);
4222	mData->mSession.mProgress.setNull();
4223
4224	mParent->addProcessToReap (mData->mSession.mPid);
4225	mData->mSession.mPid = NIL_RTPROCESS;
4226
4227	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
4228	return true;
4229	}
4230
4231	return false;
4232	}
4233
4234	/**
4235	* Checks that the registered flag of the machine can be set according to
4236	* the argument and sets it. On success, commits and saves all settings.
4237	*
4238	* @note When this machine is inaccessible, the only valid value for \a
4239	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
4240	* inaccessible machines are not currently supported. Note that unregistering
4241	* an inaccessible machine will \b uninitialize this machine object. Therefore,
4242	* the caller must make sure there are no active Machine::addCaller() calls
4243	* on the current thread because this will block Machine::uninit().
4244	*
4245	* @note Must be called from mParent's write lock. Locks this object and
4246	* children for writing.
4247	*/
4248	HRESULT Machine::trySetRegistered (BOOL aRegistered)
4249	{
4250	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
4251
4252	AutoLimitedCaller autoCaller (this);
4253	AssertComRCReturnRC (autoCaller.rc());
4254
4255	AutoWriteLock alock (this);
4256
4257	/* wait for state dependants to drop to zero */
4258	ensureNoStateDependencies();
4259
4260	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
4261
4262	if (!mData->mAccessible)
4263	{
4264	/* A special case: the machine is not accessible. */
4265
4266	/* inaccessible machines can only be unregistered */
4267	AssertReturn (!aRegistered, E_FAIL);
4268
4269	/* Uninitialize ourselves here because currently there may be no
4270	* unregistered that are inaccessible (this state combination is not
4271	* supported). Note releasing the caller and leaving the lock before
4272	* calling uninit() */
4273
4274	alock.leave();
4275	autoCaller.release();
4276
4277	uninit();
4278
4279	return S_OK;
4280	}
4281
4282	AssertReturn (autoCaller.state() == Ready, E_FAIL);
4283
4284	/* we will probably modify these and want to prevent concurrent
4285	* modifications until we finish */
4286	AutoWriteLock dvdLock (mDVDDrive);
4287	AutoWriteLock floppyLock (mFloppyDrive);
4288
4289	if (aRegistered)
4290	{
4291	if (mData->mRegistered)
4292	return setError (VBOX_E_INVALID_OBJECT_STATE,
4293	tr ("The machine '%ls' with UUID {%s} is already registered"),
4294	mUserData->mName.raw(),
4295	mData->mUuid.toString().raw());
4296	}
4297	else
4298	{
4299	if (mData->mMachineState == MachineState_Saved)
4300	return setError (VBOX_E_INVALID_VM_STATE,
4301	tr ("Cannot unregister the machine '%ls' because it "
4302	"is in the Saved state"),
4303	mUserData->mName.raw());
4304
4305	size_t snapshotCount = 0;
4306	if (mData->mFirstSnapshot)
4307	snapshotCount = mData->mFirstSnapshot->descendantCount() + 1;
4308	if (snapshotCount)
4309	return setError (VBOX_E_INVALID_OBJECT_STATE,
4310	tr ("Cannot unregister the machine '%ls' because it "
4311	"has %d snapshots"),
4312	mUserData->mName.raw(), snapshotCount);
4313
4314	if (mData->mSession.mState != SessionState_Closed)
4315	return setError (VBOX_E_INVALID_OBJECT_STATE,
4316	tr ("Cannot unregister the machine '%ls' because it has an "
4317	"open session"),
4318	mUserData->mName.raw());
4319
4320	if (mHDData->mAttachments.size() != 0)
4321	return setError (VBOX_E_INVALID_OBJECT_STATE,
4322	tr ("Cannot unregister the machine '%ls' because it "
4323	"has %d hard disks attached"),
4324	mUserData->mName.raw(), mHDData->mAttachments.size());
4325
4326	/* Note that we do not prevent unregistration of a DVD or Floppy image
4327	* is attached: as opposed to hard disks detaching such an image
4328	* implicitly in this method (which we will do below) won't have any
4329	* side effects (like detached orphan base and diff hard disks etc).*/
4330	}
4331
4332	HRESULT rc = S_OK;
4333
4334	/* Ensure the settings are saved. If we are going to be registered and
4335	* isConfigLocked() is FALSE then it means that no config file exists yet,
4336	* so create it by calling saveSettings() too. */
4337	if (isModified() \|\| (aRegistered && !isConfigLocked()))
4338	{
4339	rc = saveSettings();
4340	CheckComRCReturnRC (rc);
4341	}
4342
4343	/* Implicitly detach DVD/Floppy */
4344	rc = mDVDDrive->unmount();
4345	if (SUCCEEDED (rc))
4346	rc = mFloppyDrive->unmount();
4347
4348	if (SUCCEEDED (rc))
4349	{
4350	/* we may have had implicit modifications we want to fix on success */
4351	commit();
4352
4353	mData->mRegistered = aRegistered;
4354	}
4355	else
4356	{
4357	/* we may have had implicit modifications we want to cancel on failure*/
4358	rollback (false /* aNotify */);
4359	}
4360
4361	return rc;
4362	}
4363
4364	/**
4365	* Increases the number of objects dependent on the machine state or on the
4366	* registered state. Guarantees that these two states will not change at least
4367	* until #releaseStateDependency() is called.
4368	*
4369	* Depending on the @a aDepType value, additional state checks may be made.
4370	* These checks will set extended error info on failure. See
4371	* #checkStateDependency() for more info.
4372	*
4373	* If this method returns a failure, the dependency is not added and the caller
4374	* is not allowed to rely on any particular machine state or registration state
4375	* value and may return the failed result code to the upper level.
4376	*
4377	* @param aDepType Dependency type to add.
4378	* @param aState Current machine state (NULL if not interested).
4379	* @param aRegistered Current registered state (NULL if not interested).
4380	*
4381	* @note Locks this object for writing.
4382	*/
4383	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
4384	MachineState_T aState / = NULL */,
4385	BOOL aRegistered / = NULL */)
4386	{
4387	AutoCaller autoCaller (this);
4388	AssertComRCReturnRC (autoCaller.rc());
4389
4390	AutoWriteLock alock (this);
4391
4392	HRESULT rc = checkStateDependency (aDepType);
4393	CheckComRCReturnRC (rc);
4394
4395	{
4396	if (mData->mMachineStateChangePending != 0)
4397	{
4398	/* ensureNoStateDependencies() is waiting for state dependencies to
4399	* drop to zero so don't add more. It may make sense to wait a bit
4400	* and retry before reporting an error (since the pending state
4401	* transition should be really quick) but let's just assert for
4402	* now to see if it ever happens on practice. */
4403
4404	AssertFailed();
4405
4406	return setError (E_ACCESSDENIED,
4407	tr ("Machine state change is in progress. "
4408	"Please retry the operation later."));
4409	}
4410
4411	++ mData->mMachineStateDeps;
4412	Assert (mData->mMachineStateDeps != 0 /* overflow */);
4413	}
4414
4415	if (aState)
4416	*aState = mData->mMachineState;
4417	if (aRegistered)
4418	*aRegistered = mData->mRegistered;
4419
4420	return S_OK;
4421	}
4422
4423	/**
4424	* Decreases the number of objects dependent on the machine state.
4425	* Must always complete the #addStateDependency() call after the state
4426	* dependency is no more necessary.
4427	*/
4428	void Machine::releaseStateDependency()
4429	{
4430	AutoCaller autoCaller (this);
4431	AssertComRCReturnVoid (autoCaller.rc());
4432
4433	AutoWriteLock alock (this);
4434
4435	AssertReturnVoid (mData->mMachineStateDeps != 0
4436	/* releaseStateDependency() w/o addStateDependency()? */);
4437	-- mData->mMachineStateDeps;
4438
4439	if (mData->mMachineStateDeps == 0)
4440	{
4441	/* inform ensureNoStateDependencies() that there are no more deps */
4442	if (mData->mMachineStateChangePending != 0)
4443	{
4444	Assert (mData->mMachineStateDepsSem != NIL_RTSEMEVENTMULTI);
4445	RTSemEventMultiSignal (mData->mMachineStateDepsSem);
4446	}
4447	}
4448	}
4449
4450	// protected methods
4451	/////////////////////////////////////////////////////////////////////////////
4452
4453	/**
4454	* Performs machine state checks based on the @a aDepType value. If a check
4455	* fails, this method will set extended error info, otherwise it will return
4456	* S_OK. It is supposed, that on failure, the caller will immedieately return
4457	* the return value of this method to the upper level.
4458	*
4459	* When @a aDepType is AnyStateDep, this method always returns S_OK.
4460	*
4461	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
4462	* current state of this machine object allows to change settings of the
4463	* machine (i.e. the machine is not registered, or registered but not running
4464	* and not saved). It is useful to call this method from Machine setters
4465	* before performing any change.
4466	*
4467	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
4468	* as for MutableStateDep except that if the machine is saved, S_OK is also
4469	* returned. This is useful in setters which allow changing machine
4470	* properties when it is in the saved state.
4471	*
4472	* @param aDepType Dependency type to check.
4473	*
4474	* @note Non Machine based classes should use #addStateDependency() and
4475	* #releaseStateDependency() methods or the smart AutoStateDependency
4476	* template.
4477	*
4478	* @note This method must be called from under this object's read or write
4479	* lock.
4480	*/
4481	HRESULT Machine::checkStateDependency (StateDependency aDepType)
4482	{
4483	switch (aDepType)
4484	{
4485	case AnyStateDep:
4486	{
4487	break;
4488	}
4489	case MutableStateDep:
4490	{
4491	if (mData->mRegistered &&
4492	(mType != IsSessionMachine \|\|
4493	mData->mMachineState > MachineState_Paused \|\|
4494	mData->mMachineState == MachineState_Saved))
4495	return setError (VBOX_E_INVALID_VM_STATE,
4496	tr ("The machine is not mutable (state is %d)"),
4497	mData->mMachineState);
4498	break;
4499	}
4500	case MutableOrSavedStateDep:
4501	{
4502	if (mData->mRegistered &&
4503	(mType != IsSessionMachine \|\|
4504	mData->mMachineState > MachineState_Paused))
4505	return setError (VBOX_E_INVALID_VM_STATE,
4506	tr ("The machine is not mutable (state is %d)"),
4507	mData->mMachineState);
4508	break;
4509	}
4510	}
4511
4512	return S_OK;
4513	}
4514
4515	/**
4516	* Helper to initialize all associated child objects and allocate data
4517	* structures.
4518	*
4519	* This method must be called as a part of the object's initialization procedure
4520	* (usually done in the #init() method).
4521	*
4522	* @note Must be called only from #init() or from #registeredInit().
4523	*/
4524	HRESULT Machine::initDataAndChildObjects()
4525	{
4526	AutoCaller autoCaller (this);
4527	AssertComRCReturnRC (autoCaller.rc());
4528	AssertComRCReturn (autoCaller.state() == InInit \|\|
4529	autoCaller.state() == Limited, E_FAIL);
4530
4531	AssertReturn (!mData->mAccessible, E_FAIL);
4532
4533	/* allocate data structures */
4534	mSSData.allocate();
4535	mUserData.allocate();
4536	mHWData.allocate();
4537	mHDData.allocate();
4538	mStorageControllers.allocate();
4539
4540	/* initialize mOSTypeId */
4541	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
4542
4543	/* create associated BIOS settings object */
4544	unconst (mBIOSSettings).createObject();
4545	mBIOSSettings->init (this);
4546
4547	#ifdef VBOX_WITH_VRDP
4548	/* create an associated VRDPServer object (default is disabled) */
4549	unconst (mVRDPServer).createObject();
4550	mVRDPServer->init (this);
4551	#endif
4552
4553	/* create an associated DVD drive object */
4554	unconst (mDVDDrive).createObject();
4555	mDVDDrive->init (this);
4556
4557	/* create an associated floppy drive object */
4558	unconst (mFloppyDrive).createObject();
4559	mFloppyDrive->init (this);
4560
4561	/* create associated serial port objects */
4562	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4563	{
4564	unconst (mSerialPorts [slot]).createObject();
4565	mSerialPorts [slot]->init (this, slot);
4566	}
4567
4568	/* create associated parallel port objects */
4569	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4570	{
4571	unconst (mParallelPorts [slot]).createObject();
4572	mParallelPorts [slot]->init (this, slot);
4573	}
4574
4575	/* create the audio adapter object (always present, default is disabled) */
4576	unconst (mAudioAdapter).createObject();
4577	mAudioAdapter->init (this);
4578
4579	/* create the USB controller object (always present, default is disabled) */
4580	unconst (mUSBController).createObject();
4581	mUSBController->init (this);
4582
4583	/* create associated network adapter objects */
4584	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4585	{
4586	unconst (mNetworkAdapters [slot]).createObject();
4587	mNetworkAdapters [slot]->init (this, slot);
4588	}
4589
4590	return S_OK;
4591	}
4592
4593	/**
4594	* Helper to uninitialize all associated child objects and to free all data
4595	* structures.
4596	*
4597	* This method must be called as a part of the object's uninitialization
4598	* procedure (usually done in the #uninit() method).
4599	*
4600	* @note Must be called only from #uninit() or from #registeredInit().
4601	*/
4602	void Machine::uninitDataAndChildObjects()
4603	{
4604	AutoCaller autoCaller (this);
4605	AssertComRCReturnVoid (autoCaller.rc());
4606	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
4607	autoCaller.state() == Limited);
4608
4609	/* uninit all children using addDependentChild()/removeDependentChild()
4610	* in their init()/uninit() methods */
4611	uninitDependentChildren();
4612
4613	/* tell all our other child objects we've been uninitialized */
4614
4615	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4616	{
4617	if (mNetworkAdapters [slot])
4618	{
4619	mNetworkAdapters [slot]->uninit();
4620	unconst (mNetworkAdapters [slot]).setNull();
4621	}
4622	}
4623
4624	if (mUSBController)
4625	{
4626	mUSBController->uninit();
4627	unconst (mUSBController).setNull();
4628	}
4629
4630	if (mAudioAdapter)
4631	{
4632	mAudioAdapter->uninit();
4633	unconst (mAudioAdapter).setNull();
4634	}
4635
4636	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4637	{
4638	if (mParallelPorts [slot])
4639	{
4640	mParallelPorts [slot]->uninit();
4641	unconst (mParallelPorts [slot]).setNull();
4642	}
4643	}
4644
4645	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4646	{
4647	if (mSerialPorts [slot])
4648	{
4649	mSerialPorts [slot]->uninit();
4650	unconst (mSerialPorts [slot]).setNull();
4651	}
4652	}
4653
4654	if (mFloppyDrive)
4655	{
4656	mFloppyDrive->uninit();
4657	unconst (mFloppyDrive).setNull();
4658	}
4659
4660	if (mDVDDrive)
4661	{
4662	mDVDDrive->uninit();
4663	unconst (mDVDDrive).setNull();
4664	}
4665
4666	#ifdef VBOX_WITH_VRDP
4667	if (mVRDPServer)
4668	{
4669	mVRDPServer->uninit();
4670	unconst (mVRDPServer).setNull();
4671	}
4672	#endif
4673
4674	if (mBIOSSettings)
4675	{
4676	mBIOSSettings->uninit();
4677	unconst (mBIOSSettings).setNull();
4678	}
4679
4680	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
4681	* instance is uninitialized; SessionMachine instances refer to real
4682	* Machine hard disks). This is necessary for a clean re-initialization of
4683	* the VM after successfully re-checking the accessibility state. Note
4684	* that in case of normal Machine or SnapshotMachine uninitialization (as
4685	* a result of unregistering or discarding the snapshot), outdated hard
4686	* disk attachments will already be uninitialized and deleted, so this
4687	* code will not affect them. */
4688	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
4689	{
4690	for (HDData::AttachmentList::const_iterator it =
4691	mHDData->mAttachments.begin();
4692	it != mHDData->mAttachments.end();
4693	++ it)
4694	{
4695	HRESULT rc = (*it)->hardDisk()->detachFrom (mData->mUuid,
4696	snapshotId());
4697	AssertComRC (rc);
4698	}
4699	}
4700
4701	if (mType == IsMachine)
4702	{
4703	/* reset some important fields of mData */
4704	mData->mCurrentSnapshot.setNull();
4705	mData->mFirstSnapshot.setNull();
4706	}
4707
4708	/* free data structures (the essential mData structure is not freed here
4709	* since it may be still in use) */
4710	mHDData.free();
4711	mStorageControllers.free();
4712	mHWData.free();
4713	mUserData.free();
4714	mSSData.free();
4715	}
4716
4717	/**
4718	* Makes sure that there are no machine state dependants. If necessary, waits
4719	* for the number of dependants to drop to zero.
4720	*
4721	* Make sure this method is called from under this object's write lock to
4722	* guarantee that no new dependants may be added when this method returns
4723	* control to the caller.
4724	*
4725	* @note Locks this object for writing. The lock will be released while waiting
4726	* (if necessary).
4727	*
4728	* @warning To be used only in methods that change the machine state!
4729	*/
4730	void Machine::ensureNoStateDependencies()
4731	{
4732	AssertReturnVoid (isWriteLockOnCurrentThread());
4733
4734	AutoWriteLock alock (this);
4735
4736	/* Wait for all state dependants if necessary */
4737	if (mData->mMachineStateDeps != 0)
4738	{
4739	/* lazy semaphore creation */
4740	if (mData->mMachineStateDepsSem == NIL_RTSEMEVENTMULTI)
4741	RTSemEventMultiCreate (&mData->mMachineStateDepsSem);
4742
4743	LogFlowThisFunc (("Waiting for state deps (%d) to drop to zero...\n",
4744	mData->mMachineStateDeps));
4745
4746	++ mData->mMachineStateChangePending;
4747
4748	/* reset the semaphore before waiting, the last dependant will signal
4749	* it */
4750	RTSemEventMultiReset (mData->mMachineStateDepsSem);
4751
4752	alock.leave();
4753
4754	RTSemEventMultiWait (mData->mMachineStateDepsSem, RT_INDEFINITE_WAIT);
4755
4756	alock.enter();
4757
4758	-- mData->mMachineStateChangePending;
4759	}
4760	}
4761
4762	/**
4763	* Changes the machine state and informs callbacks.
4764	*
4765	* This method is not intended to fail so it either returns S_OK or asserts (and
4766	* returns a failure).
4767	*
4768	* @note Locks this object for writing.
4769	*/
4770	HRESULT Machine::setMachineState (MachineState_T aMachineState)
4771	{
4772	LogFlowThisFuncEnter();
4773	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
4774
4775	AutoCaller autoCaller (this);
4776	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
4777
4778	AutoWriteLock alock (this);
4779
4780	/* wait for state dependants to drop to zero */
4781	ensureNoStateDependencies();
4782
4783	if (mData->mMachineState != aMachineState)
4784	{
4785	mData->mMachineState = aMachineState;
4786
4787	RTTimeNow (&mData->mLastStateChange);
4788
4789	mParent->onMachineStateChange (mData->mUuid, aMachineState);
4790	}
4791
4792	LogFlowThisFuncLeave();
4793	return S_OK;
4794	}
4795
4796	/**
4797	* Searches for a shared folder with the given logical name
4798	* in the collection of shared folders.
4799	*
4800	* @param aName logical name of the shared folder
4801	* @param aSharedFolder where to return the found object
4802	* @param aSetError whether to set the error info if the folder is
4803	* not found
4804	* @return
4805	* S_OK when found or VBOX_E_OBJECT_NOT_FOUND when not found
4806	*
4807	* @note
4808	* must be called from under the object's lock!
4809	*/
4810	HRESULT Machine::findSharedFolder (CBSTR aName,
4811	ComObjPtr <SharedFolder> &aSharedFolder,
4812	bool aSetError /* = false */)
4813	{
4814	bool found = false;
4815	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
4816	!found && it != mHWData->mSharedFolders.end();
4817	++ it)
4818	{
4819	AutoWriteLock alock (*it);
4820	found = (*it)->name() == aName;
4821	if (found)
4822	aSharedFolder = *it;
4823	}
4824
4825	HRESULT rc = found ? S_OK : VBOX_E_OBJECT_NOT_FOUND;
4826
4827	if (aSetError && !found)
4828	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
4829
4830	return rc;
4831	}
4832
4833	/**
4834	* Loads all the VM settings by walking down the <Machine> node.
4835	*
4836	* @param aRegistered true when the machine is being loaded on VirtualBox
4837	* startup
4838	*
4839	* @note This method is intended to be called only from init(), so it assumes
4840	* all machine data fields have appropriate default values when it is called.
4841	*
4842	* @note Doesn't lock any objects.
4843	*/
4844	HRESULT Machine::loadSettings (bool aRegistered)
4845	{
4846	LogFlowThisFuncEnter();
4847	AssertReturn (mType == IsMachine, E_FAIL);
4848
4849	AutoCaller autoCaller (this);
4850	AssertReturn (autoCaller.state() == InInit, E_FAIL);
4851
4852	HRESULT rc = S_OK;
4853
4854	try
4855	{
4856	using namespace settings;
4857	using namespace xml;
4858
4859	/* no concurrent file access is possible in init() so open by handle */
4860	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
4861	XmlTreeBackend tree;
4862
4863	rc = VirtualBox::loadSettingsTree_FirstTime (tree, file,
4864	mData->mSettingsFileVersion);
4865	CheckComRCThrowRC (rc);
4866
4867	Key machineNode = tree.rootKey().key ("Machine");
4868
4869	/* uuid (required) */
4870	Guid id = machineNode.value <Guid> ("uuid");
4871
4872	/* If the stored UUID is not empty, it means the registered machine
4873	* is being loaded. Compare the loaded UUID with the stored one taken
4874	* from the global registry. */
4875	if (!mData->mUuid.isEmpty())
4876	{
4877	if (mData->mUuid != id)
4878	{
4879	throw setError (E_FAIL,
4880	tr ("Machine UUID {%RTuuid} in '%ls' doesn't match its "
4881	"UUID {%s} in the registry file '%ls'"),
4882	id.raw(), mData->mConfigFileFull.raw(),
4883	mData->mUuid.toString().raw(),
4884	mParent->settingsFileName().raw());
4885	}
4886	}
4887	else
4888	unconst (mData->mUuid) = id;
4889
4890	/* name (required) */
4891	mUserData->mName = machineNode.stringValue ("name");
4892
4893	/* nameSync (optional, default is true) */
4894	mUserData->mNameSync = machineNode.value <bool> ("nameSync");
4895
4896	/* Description (optional, default is null) */
4897	{
4898	Key descNode = machineNode.findKey ("Description");
4899	if (!descNode.isNull())
4900	mUserData->mDescription = descNode.keyStringValue();
4901	else
4902	mUserData->mDescription.setNull();
4903	}
4904
4905	/* OSType (required) */
4906	{
4907	mUserData->mOSTypeId = machineNode.stringValue ("OSType");
4908
4909	/* look up the object by Id to check it is valid */
4910	ComPtr <IGuestOSType> guestOSType;
4911	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
4912	guestOSType.asOutParam());
4913	CheckComRCThrowRC (rc);
4914	}
4915
4916	/* stateFile (optional) */
4917	{
4918	Bstr stateFilePath = machineNode.stringValue ("stateFile");
4919	if (stateFilePath)
4920	{
4921	Utf8Str stateFilePathFull = stateFilePath;
4922	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4923	if (RT_FAILURE (vrc))
4924	{
4925	throw setError (E_FAIL,
4926	tr ("Invalid saved state file path '%ls' (%Rrc)"),
4927	stateFilePath.raw(), vrc);
4928	}
4929	mSSData->mStateFilePath = stateFilePathFull;
4930	}
4931	else
4932	mSSData->mStateFilePath.setNull();
4933	}
4934
4935	/*
4936	* currentSnapshot ID (optional)
4937	*
4938	* Note that due to XML Schema constaraints, this attribute, when
4939	* present, will guaranteedly refer to an existing snapshot
4940	* definition in XML
4941	*/
4942	Guid currentSnapshotId = machineNode.valueOr <Guid> ("currentSnapshot",
4943	Guid());
4944
4945	/* snapshotFolder (optional) */
4946	{
4947	Bstr folder = machineNode.stringValue ("snapshotFolder");
4948	rc = COMSETTER (SnapshotFolder) (folder);
4949	CheckComRCThrowRC (rc);
4950	}
4951
4952	/* currentStateModified (optional, default is true) */
4953	mData->mCurrentStateModified = machineNode.value <bool> ("currentStateModified");
4954
4955	/* lastStateChange (optional, defaults to now) */
4956	{
4957	RTTIMESPEC now;
4958	RTTimeNow (&now);
4959	mData->mLastStateChange =
4960	machineNode.valueOr <RTTIMESPEC> ("lastStateChange", now);
4961	}
4962
4963	/* aborted (optional, default is false) */
4964	bool aborted = machineNode.value <bool> ("aborted");
4965
4966	/*
4967	* note: all mUserData members must be assigned prior this point because
4968	* we need to commit changes in order to let mUserData be shared by all
4969	* snapshot machine instances.
4970	*/
4971	mUserData.commitCopy();
4972
4973	/* Snapshot node (optional) */
4974	{
4975	Key snapshotNode = machineNode.findKey ("Snapshot");
4976	if (!snapshotNode.isNull())
4977	{
4978	/* read all snapshots recursively */
4979	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
4980	CheckComRCThrowRC (rc);
4981	}
4982	}
4983
4984	Key hardwareNode = machineNode.key("Hardware");
4985
4986	/* Hardware node (required) */
4987	rc = loadHardware (hardwareNode);
4988	CheckComRCThrowRC (rc);
4989
4990	/* Load storage controllers */
4991	rc = loadStorageControllers (machineNode.key ("StorageControllers"), aRegistered);
4992	CheckComRCThrowRC (rc);
4993
4994	/*
4995	* NOTE: the assignment below must be the last thing to do,
4996	* otherwise it will be not possible to change the settings
4997	* somewehere in the code above because all setters will be
4998	* blocked by checkStateDependency (MutableStateDep).
4999	*/
5000
5001	/* set the machine state to Aborted or Saved when appropriate */
5002	if (aborted)
5003	{
5004	Assert (!mSSData->mStateFilePath);
5005	mSSData->mStateFilePath.setNull();
5006
5007	/* no need to use setMachineState() during init() */
5008	mData->mMachineState = MachineState_Aborted;
5009	}
5010	else if (mSSData->mStateFilePath)
5011	{
5012	/* no need to use setMachineState() during init() */
5013	mData->mMachineState = MachineState_Saved;
5014	}
5015	}
5016	catch (HRESULT err)
5017	{
5018	/* we assume that error info is set by the thrower */
5019	rc = err;
5020	}
5021	catch (...)
5022	{
5023	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5024	}
5025
5026	LogFlowThisFuncLeave();
5027	return rc;
5028	}
5029
5030	/**
5031	* Recursively loads all snapshots starting from the given.
5032	*
5033	* @param aNode <Snapshot> node.
5034	* @param aCurSnapshotId Current snapshot ID from the settings file.
5035	* @param aParentSnapshot Parent snapshot.
5036	*/
5037	HRESULT Machine::loadSnapshot (const settings::Key &aNode,
5038	const Guid &aCurSnapshotId,
5039	Snapshot *aParentSnapshot)
5040	{
5041	using namespace settings;
5042
5043	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5044	AssertReturn (mType == IsMachine, E_FAIL);
5045
5046	/* create a snapshot machine object */
5047	ComObjPtr <SnapshotMachine> snapshotMachine;
5048	snapshotMachine.createObject();
5049
5050	HRESULT rc = S_OK;
5051
5052	/* required */
5053	Guid uuid = aNode.value <Guid> ("uuid");
5054
5055	{
5056	/* optional */
5057	Bstr stateFilePath = aNode.stringValue ("stateFile");
5058	if (stateFilePath)
5059	{
5060	Utf8Str stateFilePathFull = stateFilePath;
5061	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
5062	if (RT_FAILURE (vrc))
5063	return setError (E_FAIL,
5064	tr ("Invalid saved state file path '%ls' (%Rrc)"),
5065	stateFilePath.raw(), vrc);
5066
5067	stateFilePath = stateFilePathFull;
5068	}
5069
5070	/* Hardware node (required) */
5071	Key hardwareNode = aNode.key ("Hardware");
5072
5073	/* StorageControllers node (required) */
5074	Key storageNode = aNode.key ("StorageControllers");
5075
5076	/* initialize the snapshot machine */
5077	rc = snapshotMachine->init (this, hardwareNode, storageNode,
5078	uuid, stateFilePath);
5079	CheckComRCReturnRC (rc);
5080	}
5081
5082	/* create a snapshot object */
5083	ComObjPtr <Snapshot> snapshot;
5084	snapshot.createObject();
5085
5086	{
5087	/* required */
5088	Bstr name = aNode.stringValue ("name");
5089
5090	/* required */
5091	RTTIMESPEC timeStamp = aNode.value <RTTIMESPEC> ("timeStamp");
5092
5093	/* optional */
5094	Bstr description;
5095	{
5096	Key descNode = aNode.findKey ("Description");
5097	if (!descNode.isNull())
5098	description = descNode.keyStringValue();
5099	}
5100
5101	/* initialize the snapshot */
5102	rc = snapshot->init (uuid, name, description, timeStamp,
5103	snapshotMachine, aParentSnapshot);
5104	CheckComRCReturnRC (rc);
5105	}
5106
5107	/* memorize the first snapshot if necessary */
5108	if (!mData->mFirstSnapshot)
5109	mData->mFirstSnapshot = snapshot;
5110
5111	/* memorize the current snapshot when appropriate */
5112	if (!mData->mCurrentSnapshot && snapshot->data().mId == aCurSnapshotId)
5113	mData->mCurrentSnapshot = snapshot;
5114
5115	/* Snapshots node (optional) */
5116	{
5117	Key snapshotsNode = aNode.findKey ("Snapshots");
5118	if (!snapshotsNode.isNull())
5119	{
5120	Key::List children = snapshotsNode.keys ("Snapshot");
5121	for (Key::List::const_iterator it = children.begin();
5122	it != children.end(); ++ it)
5123	{
5124	rc = loadSnapshot ((*it), aCurSnapshotId, snapshot);
5125	CheckComRCBreakRC (rc);
5126	}
5127	}
5128	}
5129
5130	return rc;
5131	}
5132
5133	/**
5134	* @param aNode <Hardware> node.
5135	*/
5136	HRESULT Machine::loadHardware (const settings::Key &aNode)
5137	{
5138	using namespace settings;
5139
5140	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5141	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5142
5143	HRESULT rc = S_OK;
5144
5145	/* The hardware version attribute (optional). */
5146	mHWData->mHWVersion = aNode.stringValue ("version");
5147
5148	/* CPU node (currently not required) */
5149	{
5150	/* default value in case the node is not there */
5151	mHWData->mHWVirtExEnabled = TSBool_Default;
5152	mHWData->mHWVirtExNestedPagingEnabled = false;
5153	mHWData->mHWVirtExVPIDEnabled = false;
5154	mHWData->mPAEEnabled = false;
5155
5156	Key cpuNode = aNode.findKey ("CPU");
5157	if (!cpuNode.isNull())
5158	{
5159	Key hwVirtExNode = cpuNode.key ("HardwareVirtEx");
5160	if (!hwVirtExNode.isNull())
5161	{
5162	const char *enabled = hwVirtExNode.stringValue ("enabled");
5163	if (strcmp (enabled, "false") == 0)
5164	mHWData->mHWVirtExEnabled = TSBool_False;
5165	else if (strcmp (enabled, "true") == 0)
5166	mHWData->mHWVirtExEnabled = TSBool_True;
5167	else
5168	mHWData->mHWVirtExEnabled = TSBool_Default;
5169	}
5170	/* HardwareVirtExNestedPaging (optional, default is false) */
5171	Key HWVirtExNestedPagingNode = cpuNode.findKey ("HardwareVirtExNestedPaging");
5172	if (!HWVirtExNestedPagingNode.isNull())
5173	{
5174	mHWData->mHWVirtExNestedPagingEnabled = HWVirtExNestedPagingNode.value <bool> ("enabled");
5175	}
5176
5177	/* HardwareVirtExVPID (optional, default is false) */
5178	Key HWVirtExVPIDNode = cpuNode.findKey ("HardwareVirtExVPID");
5179	if (!HWVirtExVPIDNode.isNull())
5180	{
5181	mHWData->mHWVirtExVPIDEnabled = HWVirtExVPIDNode.value <bool> ("enabled");
5182	}
5183
5184	/* PAE (optional, default is false) */
5185	Key PAENode = cpuNode.findKey ("PAE");
5186	if (!PAENode.isNull())
5187	{
5188	mHWData->mPAEEnabled = PAENode.value <bool> ("enabled");
5189	}
5190
5191	/* CPUCount (optional, default is 1) */
5192	mHWData->mCPUCount = cpuNode.value <ULONG> ("count");
5193	}
5194	}
5195
5196	/* Memory node (required) */
5197	{
5198	Key memoryNode = aNode.key ("Memory");
5199
5200	mHWData->mMemorySize = memoryNode.value <ULONG> ("RAMSize");
5201	}
5202
5203	/* Boot node (required) */
5204	{
5205	/* reset all boot order positions to NoDevice */
5206	for (size_t i = 0; i < RT_ELEMENTS (mHWData->mBootOrder); i++)
5207	mHWData->mBootOrder [i] = DeviceType_Null;
5208
5209	Key bootNode = aNode.key ("Boot");
5210
5211	Key::List orderNodes = bootNode.keys ("Order");
5212	for (Key::List::const_iterator it = orderNodes.begin();
5213	it != orderNodes.end(); ++ it)
5214	{
5215	/* position (required) */
5216	/* position unicity is guaranteed by XML Schema */
5217	uint32_t position = (*it).value <uint32_t> ("position");
5218	-- position;
5219	Assert (position < RT_ELEMENTS (mHWData->mBootOrder));
5220
5221	/* device (required) */
5222	const char device = (it).stringValue ("device");
5223	if (strcmp (device, "None") == 0)
5224	mHWData->mBootOrder [position] = DeviceType_Null;
5225	else if (strcmp (device, "Floppy") == 0)
5226	mHWData->mBootOrder [position] = DeviceType_Floppy;
5227	else if (strcmp (device, "DVD") == 0)
5228	mHWData->mBootOrder [position] = DeviceType_DVD;
5229	else if (strcmp (device, "HardDisk") == 0)
5230	mHWData->mBootOrder [position] = DeviceType_HardDisk;
5231	else if (strcmp (device, "Network") == 0)
5232	mHWData->mBootOrder [position] = DeviceType_Network;
5233	else
5234	ComAssertMsgFailed (("Invalid device: %s", device));
5235	}
5236	}
5237
5238	/* Display node (required) */
5239	{
5240	Key displayNode = aNode.key ("Display");
5241
5242	mHWData->mVRAMSize = displayNode.value <ULONG> ("VRAMSize");
5243	mHWData->mMonitorCount = displayNode.value <ULONG> ("monitorCount");
5244	mHWData->mAccelerate3DEnabled = displayNode.value <bool> ("accelerate3D");
5245	}
5246
5247	#ifdef VBOX_WITH_VRDP
5248	/* RemoteDisplay */
5249	rc = mVRDPServer->loadSettings (aNode);
5250	CheckComRCReturnRC (rc);
5251	#endif
5252
5253	/* BIOS */
5254	rc = mBIOSSettings->loadSettings (aNode);
5255	CheckComRCReturnRC (rc);
5256
5257	/* DVD drive */
5258	rc = mDVDDrive->loadSettings (aNode);
5259	CheckComRCReturnRC (rc);
5260
5261	/* Floppy drive */
5262	rc = mFloppyDrive->loadSettings (aNode);
5263	CheckComRCReturnRC (rc);
5264
5265	/* USB Controller */
5266	rc = mUSBController->loadSettings (aNode);
5267	CheckComRCReturnRC (rc);
5268
5269	/* Network node (required) */
5270	{
5271	/* we assume that all network adapters are initially disabled
5272	* and detached */
5273
5274	Key networkNode = aNode.key ("Network");
5275
5276	rc = S_OK;
5277
5278	Key::List adapters = networkNode.keys ("Adapter");
5279	for (Key::List::const_iterator it = adapters.begin();
5280	it != adapters.end(); ++ it)
5281	{
5282	/* slot number (required) */
5283	/* slot unicity is guaranteed by XML Schema */
5284	uint32_t slot = (*it).value <uint32_t> ("slot");
5285	AssertBreak (slot < RT_ELEMENTS (mNetworkAdapters));
5286
5287	rc = mNetworkAdapters [slot]->loadSettings (*it);
5288	CheckComRCReturnRC (rc);
5289	}
5290	}
5291
5292	/* Serial node (required) */
5293	{
5294	Key serialNode = aNode.key ("UART");
5295
5296	rc = S_OK;
5297
5298	Key::List ports = serialNode.keys ("Port");
5299	for (Key::List::const_iterator it = ports.begin();
5300	it != ports.end(); ++ it)
5301	{
5302	/* slot number (required) */
5303	/* slot unicity is guaranteed by XML Schema */
5304	uint32_t slot = (*it).value <uint32_t> ("slot");
5305	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5306
5307	rc = mSerialPorts [slot]->loadSettings (*it);
5308	CheckComRCReturnRC (rc);
5309	}
5310	}
5311
5312	/* Parallel node (optional) */
5313	{
5314	Key parallelNode = aNode.key ("LPT");
5315
5316	rc = S_OK;
5317
5318	Key::List ports = parallelNode.keys ("Port");
5319	for (Key::List::const_iterator it = ports.begin();
5320	it != ports.end(); ++ it)
5321	{
5322	/* slot number (required) */
5323	/* slot unicity is guaranteed by XML Schema */
5324	uint32_t slot = (*it).value <uint32_t> ("slot");
5325	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5326
5327	rc = mParallelPorts [slot]->loadSettings (*it);
5328	CheckComRCReturnRC (rc);
5329	}
5330	}
5331
5332	/* AudioAdapter */
5333	rc = mAudioAdapter->loadSettings (aNode);
5334	CheckComRCReturnRC (rc);
5335
5336	/* Shared folders (required) */
5337	{
5338	Key sharedFoldersNode = aNode.key ("SharedFolders");
5339
5340	rc = S_OK;
5341
5342	Key::List folders = sharedFoldersNode.keys ("SharedFolder");
5343	for (Key::List::const_iterator it = folders.begin();
5344	it != folders.end(); ++ it)
5345	{
5346	/* folder logical name (required) */
5347	Bstr name = (*it).stringValue ("name");
5348	/* folder host path (required) */
5349	Bstr hostPath = (*it).stringValue ("hostPath");
5350
5351	bool writable = (*it).value <bool> ("writable");
5352
5353	rc = CreateSharedFolder (name, hostPath, writable);
5354	CheckComRCReturnRC (rc);
5355	}
5356	}
5357
5358	/* Clipboard node (required) */
5359	{
5360	Key clipNode = aNode.key ("Clipboard");
5361
5362	const char *mode = clipNode.stringValue ("mode");
5363	if (strcmp (mode, "Disabled") == 0)
5364	mHWData->mClipboardMode = ClipboardMode_Disabled;
5365	else if (strcmp (mode, "HostToGuest") == 0)
5366	mHWData->mClipboardMode = ClipboardMode_HostToGuest;
5367	else if (strcmp (mode, "GuestToHost") == 0)
5368	mHWData->mClipboardMode = ClipboardMode_GuestToHost;
5369	else if (strcmp (mode, "Bidirectional") == 0)
5370	mHWData->mClipboardMode = ClipboardMode_Bidirectional;
5371	else
5372	AssertMsgFailed (("Invalid clipboard mode '%s'\n", mode));
5373	}
5374
5375	/* Guest node (required) */
5376	{
5377	Key guestNode = aNode.key ("Guest");
5378
5379	/* optional, defaults to 0 */
5380	mHWData->mMemoryBalloonSize =
5381	guestNode.value <ULONG> ("memoryBalloonSize");
5382	/* optional, defaults to 0 */
5383	mHWData->mStatisticsUpdateInterval =
5384	guestNode.value <ULONG> ("statisticsUpdateInterval");
5385	}
5386
5387	#ifdef VBOX_WITH_GUEST_PROPS
5388	/* Guest properties (optional) */
5389	{
5390	using namespace guestProp;
5391
5392	Key guestPropertiesNode = aNode.findKey ("GuestProperties");
5393	Bstr notificationPatterns (""); /* We catch allocation failure below. */
5394	if (!guestPropertiesNode.isNull())
5395	{
5396	Key::List properties = guestPropertiesNode.keys ("GuestProperty");
5397	for (Key::List::const_iterator it = properties.begin();
5398	it != properties.end(); ++ it)
5399	{
5400	uint32_t fFlags = NILFLAG;
5401
5402	/* property name (required) */
5403	Bstr name = (*it).stringValue ("name");
5404	/* property value (required) */
5405	Bstr value = (*it).stringValue ("value");
5406	/* property timestamp (optional, defaults to 0) */
5407	ULONG64 timestamp = (*it).value<ULONG64> ("timestamp");
5408	/* property flags (optional, defaults to empty) */
5409	Bstr flags = (*it).stringValue ("flags");
5410	Utf8Str utf8Flags (flags);
5411	if (utf8Flags.isNull ())
5412	return E_OUTOFMEMORY;
5413	validateFlags (utf8Flags.raw(), &fFlags);
5414	HWData::GuestProperty property = { name, value, timestamp, fFlags };
5415	mHWData->mGuestProperties.push_back (property);
5416	/* This is just sanity, as the push_back() will probably have thrown
5417	* an exception if we are out of memory. Note that if we run out
5418	* allocating the Bstrs above, this will be caught here as well. */
5419	if ( mHWData->mGuestProperties.back().mName.isNull ()
5420	\|\| mHWData->mGuestProperties.back().mValue.isNull ()
5421	)
5422	return E_OUTOFMEMORY;
5423	}
5424	notificationPatterns = guestPropertiesNode.stringValue ("notificationPatterns");
5425	}
5426	mHWData->mPropertyServiceActive = false;
5427	mHWData->mGuestPropertyNotificationPatterns = notificationPatterns;
5428	if (mHWData->mGuestPropertyNotificationPatterns.isNull ())
5429	return E_OUTOFMEMORY;
5430	}
5431	#endif /* VBOX_WITH_GUEST_PROPS defined */
5432
5433	AssertComRC (rc);
5434	return rc;
5435	}
5436
5437	/**
5438	* @param aNode <StorageControllers> node.
5439	*/
5440	HRESULT Machine::loadStorageControllers (const settings::Key &aNode, bool aRegistered,
5441	const Guid aSnapshotId / = NULL */)
5442	{
5443	using namespace settings;
5444
5445	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5446	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5447
5448	HRESULT rc = S_OK;
5449
5450	Key::List children = aNode.keys ("StorageController");
5451
5452	/* Make sure the attached hard disks don't get unregistered until we
5453	* associate them with tis machine (important for VMs loaded (opened) after
5454	* VirtualBox startup) */
5455	AutoReadLock vboxLock (mParent);
5456
5457	for (Key::List::const_iterator it = children.begin();
5458	it != children.end(); ++ it)
5459	{
5460	Bstr controllerName = (*it).stringValue ("name");
5461	const char controllerType = (it).stringValue ("type");
5462	ULONG portCount = (*it).value <ULONG> ("PortCount");
5463	StorageControllerType_T controller;
5464	StorageBus_T connection;
5465
5466	if (strcmp (controllerType, "AHCI") == 0)
5467	{
5468	connection = StorageBus_SATA;
5469	controller = StorageControllerType_IntelAhci;
5470	}
5471	else if (strcmp (controllerType, "LsiLogic") == 0)
5472	{
5473	connection = StorageBus_SCSI;
5474	controller = StorageControllerType_LsiLogic;
5475	}
5476	else if (strcmp (controllerType, "BusLogic") == 0)
5477	{
5478	connection = StorageBus_SCSI;
5479	controller = StorageControllerType_BusLogic;
5480	}
5481	else if (strcmp (controllerType, "PIIX3") == 0)
5482	{
5483	connection = StorageBus_IDE;
5484	controller = StorageControllerType_PIIX3;
5485	}
5486	else if (strcmp (controllerType, "PIIX4") == 0)
5487	{
5488	connection = StorageBus_IDE;
5489	controller = StorageControllerType_PIIX4;
5490	}
5491	else if (strcmp (controllerType, "ICH6") == 0)
5492	{
5493	connection = StorageBus_IDE;
5494	controller = StorageControllerType_ICH6;
5495	}
5496	else
5497	AssertFailedReturn (E_FAIL);
5498
5499	ComObjPtr<StorageController> ctl;
5500	/* Try to find one with the name first. */
5501	rc = getStorageControllerByName (controllerName, ctl, false /* aSetError */);
5502	if (SUCCEEDED (rc))
5503	return setError (VBOX_E_OBJECT_IN_USE,
5504	tr ("Storage controller named '%ls' already exists"), controllerName.raw());
5505
5506	ctl.createObject();
5507	rc = ctl->init (this, controllerName, connection);
5508	CheckComRCReturnRC (rc);
5509
5510	mStorageControllers->push_back (ctl);
5511
5512	rc = ctl->COMSETTER(ControllerType)(controller);
5513	CheckComRCReturnRC(rc);
5514
5515	rc = ctl->COMSETTER(PortCount)(portCount);
5516	CheckComRCReturnRC(rc);
5517
5518	/* Set IDE emulation settings (only for AHCI controller). */
5519	if (controller == StorageControllerType_IntelAhci)
5520	{
5521	ULONG val;
5522
5523	/* ide emulation settings (optional, default to 0,1,2,3 respectively) */
5524	val = (*it).valueOr <ULONG> ("IDE0MasterEmulationPort", 0);
5525	rc = ctl->SetIDEEmulationPort(0, val);
5526	CheckComRCReturnRC(rc);
5527	val = (*it).valueOr <ULONG> ("IDE0SlaveEmulationPort", 1);
5528	rc = ctl->SetIDEEmulationPort(1, val);
5529	CheckComRCReturnRC(rc);
5530	val = (*it).valueOr <ULONG> ("IDE1MasterEmulationPort", 2);
5531	rc = ctl->SetIDEEmulationPort(2, val);
5532	CheckComRCReturnRC(rc);
5533	val = (*it).valueOr <ULONG> ("IDE1SlaveEmulationPort", 3);
5534	rc = ctl->SetIDEEmulationPort(3, val);
5535	CheckComRCReturnRC(rc);
5536	}
5537
5538	/* Load the attached devices now. */
5539	rc = loadStorageDevices(ctl, (*it),
5540	aRegistered, aSnapshotId);
5541	CheckComRCReturnRC(rc);
5542	}
5543
5544	return S_OK;
5545	}
5546
5547	/**
5548	* @param aNode <HardDiskAttachments> node.
5549	* @param aRegistered true when the machine is being loaded on VirtualBox
5550	* startup, or when a snapshot is being loaded (wchich
5551	* currently can happen on startup only)
5552	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
5553	*
5554	* @note Lock mParent for reading and hard disks for writing before calling.
5555	*/
5556	HRESULT Machine::loadStorageDevices (ComObjPtr<StorageController> aStorageController,
5557	const settings::Key &aNode, bool aRegistered,
5558	const Guid aSnapshotId / = NULL */)
5559	{
5560	using namespace settings;
5561
5562	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5563	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
5564	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
5565
5566	HRESULT rc = S_OK;
5567
5568	Key::List children = aNode.keys ("AttachedDevice");
5569
5570	if (!aRegistered && children.size() > 0)
5571	{
5572	/* when the machine is being loaded (opened) from a file, it cannot
5573	* have hard disks attached (this should not happen normally,
5574	* because we don't allow to attach hard disks to an unregistered
5575	* VM at all */
5576	return setError (E_FAIL,
5577	tr ("Unregistered machine '%ls' cannot have hard disks attached "
5578	"(found %d hard disk attachments)"),
5579	mUserData->mName.raw(), children.size());
5580	}
5581
5582	for (Key::List::const_iterator it = children.begin();
5583	it != children.end(); ++ it)
5584	{
5585	Key idKey = (*it).key ("Image");
5586	/* hard disk uuid (required) */
5587	Guid uuid = idKey.value <Guid> ("uuid");
5588	/* device type (required) */
5589	const char deviceType = (it).stringValue ("type");
5590	/* channel (required) */
5591	LONG port = (*it).value <LONG> ("port");
5592	/* device (required) */
5593	LONG device = (*it).value <LONG> ("device");
5594
5595	/* We support only hard disk types at the moment.
5596	* @todo: Implement support for CD/DVD drives.
5597	*/
5598	if (strcmp(deviceType, "HardDisk") != 0)
5599	return setError (E_FAIL,
5600	tr ("Device at position %lu:%lu is not a hard disk: %s"),
5601	port, device, deviceType);
5602
5603	/* find a hard disk by UUID */
5604	ComObjPtr<HardDisk> hd;
5605	rc = mParent->findHardDisk(&uuid, NULL, true /* aDoSetError */, &hd);
5606	CheckComRCReturnRC (rc);
5607
5608	AutoWriteLock hdLock (hd);
5609
5610	if (hd->type() == HardDiskType_Immutable)
5611	{
5612	if (mType == IsSnapshotMachine)
5613	return setError (E_FAIL,
5614	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5615	"directly attached to snapshot with UUID {%RTuuid} "
5616	"of the virtual machine '%ls' ('%ls')"),
5617	hd->locationFull().raw(), uuid.raw(),
5618	aSnapshotId->raw(),
5619	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5620
5621	return setError (E_FAIL,
5622	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5623	"directly attached to the virtual machine '%ls' ('%ls')"),
5624	hd->locationFull().raw(), uuid.raw(),
5625	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5626	}
5627
5628	if (mType != IsSnapshotMachine && hd->children().size() != 0)
5629	return setError (E_FAIL,
5630	tr ("Hard disk '%ls' with UUID {%RTuuid} cannot be directly "
5631	"attached to the virtual machine '%ls' ('%ls') "
5632	"because it has %d differencing child hard disks"),
5633	hd->locationFull().raw(), uuid.raw(),
5634	mUserData->mName.raw(), mData->mConfigFileFull.raw(),
5635	hd->children().size());
5636
5637	if (std::find_if (mHDData->mAttachments.begin(),
5638	mHDData->mAttachments.end(),
5639	HardDiskAttachment::RefersTo (hd)) !=
5640	mHDData->mAttachments.end())
5641	{
5642	return setError (E_FAIL,
5643	tr ("Hard disk '%ls' with UUID {%RTuuid} is already attached "
5644	"to the virtual machine '%ls' ('%ls')"),
5645	hd->locationFull().raw(), uuid.raw(),
5646	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5647	}
5648
5649	const Bstr controllerName = aStorageController->name();
5650	ComObjPtr<HardDiskAttachment> attachment;
5651	attachment.createObject();
5652	rc = attachment->init (hd, controllerName, port, device);
5653	CheckComRCBreakRC (rc);
5654
5655	/* associate the hard disk with this machine and snapshot */
5656	if (mType == IsSnapshotMachine)
5657	rc = hd->attachTo (mData->mUuid, *aSnapshotId);
5658	else
5659	rc = hd->attachTo (mData->mUuid);
5660
5661	AssertComRCBreakRC (rc);
5662
5663	/* backup mHDData to let registeredInit() properly rollback on failure
5664	* (= limited accessibility) */
5665
5666	mHDData.backup();
5667	mHDData->mAttachments.push_back (attachment);
5668	}
5669
5670	return rc;
5671	}
5672
5673	/**
5674	* Searches for a <Snapshot> node for the given snapshot.
5675	* If the search is successful, \a aSnapshotNode will contain the found node.
5676	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
5677	* direct child of \a aMachineNode.
5678	*
5679	* If the search fails, a failure is returned and both \a aSnapshotsNode and
5680	* \a aSnapshotNode are set to 0.
5681	*
5682	* @param aSnapshot Snapshot to search for.
5683	* @param aMachineNode <Machine> node to start from.
5684	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
5685	* (may be NULL if the caller is not interested).
5686	* @param aSnapshotNode Found <Snapshot> node.
5687	*/
5688	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, settings::Key &aMachineNode,
5689	settings::Key *aSnapshotsNode,
5690	settings::Key *aSnapshotNode)
5691	{
5692	using namespace settings;
5693
5694	AssertReturn (aSnapshot && !aMachineNode.isNull()
5695	&& aSnapshotNode != NULL, E_FAIL);
5696
5697	if (aSnapshotsNode)
5698	aSnapshotsNode->setNull();
5699	aSnapshotNode->setNull();
5700
5701	// build the full uuid path (from the top parent to the given snapshot)
5702	std::list <Guid> path;
5703	{
5704	ComObjPtr <Snapshot> parent = aSnapshot;
5705	while (parent)
5706	{
5707	path.push_front (parent->data().mId);
5708	parent = parent->parent();
5709	}
5710	}
5711
5712	Key snapshotsNode = aMachineNode;
5713	Key snapshotNode;
5714
5715	for (std::list <Guid>::const_iterator it = path.begin();
5716	it != path.end();
5717	++ it)
5718	{
5719	if (!snapshotNode.isNull())
5720	{
5721	/* proceed to the nested <Snapshots> node */
5722	snapshotsNode = snapshotNode.key ("Snapshots");
5723	snapshotNode.setNull();
5724	}
5725
5726	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5727
5728	Key::List children = snapshotsNode.keys ("Snapshot");
5729	for (Key::List::const_iterator ch = children.begin();
5730	ch != children.end();
5731	++ ch)
5732	{
5733	Guid id = (*ch).value <Guid> ("uuid");
5734	if (id == (*it))
5735	{
5736	/* pass over to the outer loop */
5737	snapshotNode = *ch;
5738	break;
5739	}
5740	}
5741
5742	if (!snapshotNode.isNull())
5743	continue;
5744
5745	/* the next uuid is not found, no need to continue... */
5746	AssertFailedBreak();
5747	}
5748
5749	// we must always succesfully find the node
5750	AssertReturn (!snapshotNode.isNull(), E_FAIL);
5751	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5752
5753	if (aSnapshotsNode && (snapshotsNode != aMachineNode))
5754	*aSnapshotsNode = snapshotsNode;
5755	*aSnapshotNode = snapshotNode;
5756
5757	return S_OK;
5758	}
5759
5760	/**
5761	* Returns the snapshot with the given UUID or fails of no such snapshot.
5762	*
5763	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5764	* @param aSnapshot where to return the found snapshot
5765	* @param aSetError true to set extended error info on failure
5766	*/
5767	HRESULT Machine::findSnapshot (const Guid &aId, ComObjPtr <Snapshot> &aSnapshot,
5768	bool aSetError /* = false */)
5769	{
5770	if (!mData->mFirstSnapshot)
5771	{
5772	if (aSetError)
5773	return setError (E_FAIL,
5774	tr ("This machine does not have any snapshots"));
5775	return E_FAIL;
5776	}
5777
5778	if (aId.isEmpty())
5779	aSnapshot = mData->mFirstSnapshot;
5780	else
5781	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
5782
5783	if (!aSnapshot)
5784	{
5785	if (aSetError)
5786	return setError (E_FAIL,
5787	tr ("Could not find a snapshot with UUID {%s}"),
5788	aId.toString().raw());
5789	return E_FAIL;
5790	}
5791
5792	return S_OK;
5793	}
5794
5795	/**
5796	* Returns the snapshot with the given name or fails of no such snapshot.
5797	*
5798	* @param aName snapshot name to find
5799	* @param aSnapshot where to return the found snapshot
5800	* @param aSetError true to set extended error info on failure
5801	*/
5802	HRESULT Machine::findSnapshot (IN_BSTR aName, ComObjPtr <Snapshot> &aSnapshot,
5803	bool aSetError /* = false */)
5804	{
5805	AssertReturn (aName, E_INVALIDARG);
5806
5807	if (!mData->mFirstSnapshot)
5808	{
5809	if (aSetError)
5810	return setError (VBOX_E_OBJECT_NOT_FOUND,
5811	tr ("This machine does not have any snapshots"));
5812	return VBOX_E_OBJECT_NOT_FOUND;
5813	}
5814
5815	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5816
5817	if (!aSnapshot)
5818	{
5819	if (aSetError)
5820	return setError (VBOX_E_OBJECT_NOT_FOUND,
5821	tr ("Could not find a snapshot named '%ls'"), aName);
5822	return VBOX_E_OBJECT_NOT_FOUND;
5823	}
5824
5825	return S_OK;
5826	}
5827
5828	/**
5829	* Returns a storage controller object with the given name.
5830	*
5831	* @param aName storage controller name to find
5832	* @param aStorageController where to return the found storage controller
5833	* @param aSetError true to set extended error info on failure
5834	*/
5835	HRESULT Machine::getStorageControllerByName(CBSTR aName,
5836	ComObjPtr <StorageController> &aStorageController,
5837	bool aSetError /* = false */)
5838	{
5839	AssertReturn (aName, E_INVALIDARG);
5840
5841	for (StorageControllerList::const_iterator it =
5842	mStorageControllers->begin();
5843	it != mStorageControllers->end();
5844	++ it)
5845	{
5846	if ((*it)->name() == aName)
5847	{
5848	aStorageController = (*it);
5849	return S_OK;
5850	}
5851	}
5852
5853	if (aSetError)
5854	return setError (VBOX_E_OBJECT_NOT_FOUND,
5855	tr ("Could not find a storage controller named '%ls'"), aName);
5856	return VBOX_E_OBJECT_NOT_FOUND;
5857	}
5858
5859	HRESULT Machine::getHardDiskAttachmentsOfController(CBSTR aName,
5860	HDData::AttachmentList &atts)
5861	{
5862	AutoCaller autoCaller (this);
5863	CheckComRCReturnRC(autoCaller.rc());
5864
5865	AutoReadLock alock(this);
5866
5867	for (HDData::AttachmentList::iterator it = mHDData->mAttachments.begin();
5868	it != mHDData->mAttachments.end(); ++it)
5869	{
5870	if ((*it)->controller() == aName)
5871	atts.push_back(*it);
5872	}
5873
5874	return S_OK;
5875	}
5876
5877	/**
5878	* Helper for #saveSettings. Cares about renaming the settings directory and
5879	* file if the machine name was changed and about creating a new settings file
5880	* if this is a new machine.
5881	*
5882	* @note Must be never called directly but only from #saveSettings().
5883	*
5884	* @param aRenamed receives \|true\| if the name was changed and the settings
5885	* file was renamed as a result, or \|false\| otherwise. The
5886	* value makes sense only on success.
5887	* @param aNew receives \|true\| if a virgin settings file was created.
5888	*/
5889	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
5890	{
5891	/* Note: tecnhically, mParent needs to be locked only when the machine is
5892	* registered (see prepareSaveSettings() for details) but we don't
5893	* currently differentiate it in callers of saveSettings() so we don't
5894	* make difference here too. */
5895	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
5896	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
5897
5898	HRESULT rc = S_OK;
5899
5900	aRenamed = false;
5901
5902	/* if we're ready and isConfigLocked() is FALSE then it means
5903	* that no config file exists yet (we will create a virgin one) */
5904	aNew = !isConfigLocked();
5905
5906	/* attempt to rename the settings file if machine name is changed */
5907	if (mUserData->mNameSync &&
5908	mUserData.isBackedUp() &&
5909	mUserData.backedUpData()->mName != mUserData->mName)
5910	{
5911	aRenamed = true;
5912
5913	if (!aNew)
5914	{
5915	/* unlock the old config file */
5916	rc = unlockConfig();
5917	CheckComRCReturnRC (rc);
5918	}
5919
5920	bool dirRenamed = false;
5921	bool fileRenamed = false;
5922
5923	Utf8Str configFile, newConfigFile;
5924	Utf8Str configDir, newConfigDir;
5925
5926	do
5927	{
5928	int vrc = VINF_SUCCESS;
5929
5930	Utf8Str name = mUserData.backedUpData()->mName;
5931	Utf8Str newName = mUserData->mName;
5932
5933	configFile = mData->mConfigFileFull;
5934
5935	/* first, rename the directory if it matches the machine name */
5936	configDir = configFile;
5937	RTPathStripFilename (configDir.mutableRaw());
5938	newConfigDir = configDir;
5939	if (RTPathFilename (configDir) == name)
5940	{
5941	RTPathStripFilename (newConfigDir.mutableRaw());
5942	newConfigDir = Utf8StrFmt ("%s%c%s",
5943	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5944	/* new dir and old dir cannot be equal here because of 'if'
5945	* above and because name != newName */
5946	Assert (configDir != newConfigDir);
5947	if (!aNew)
5948	{
5949	/* perform real rename only if the machine is not new */
5950	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5951	if (RT_FAILURE (vrc))
5952	{
5953	rc = setError (E_FAIL,
5954	tr ("Could not rename the directory '%s' to '%s' "
5955	"to save the settings file (%Rrc)"),
5956	configDir.raw(), newConfigDir.raw(), vrc);
5957	break;
5958	}
5959	dirRenamed = true;
5960	}
5961	}
5962
5963	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
5964	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5965
5966	/* then try to rename the settings file itself */
5967	if (newConfigFile != configFile)
5968	{
5969	/* get the path to old settings file in renamed directory */
5970	configFile = Utf8StrFmt ("%s%c%s",
5971	newConfigDir.raw(), RTPATH_DELIMITER,
5972	RTPathFilename (configFile));
5973	if (!aNew)
5974	{
5975	/* perform real rename only if the machine is not new */
5976	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
5977	if (RT_FAILURE (vrc))
5978	{
5979	rc = setError (E_FAIL,
5980	tr ("Could not rename the settings file '%s' to '%s' "
5981	"(%Rrc)"),
5982	configFile.raw(), newConfigFile.raw(), vrc);
5983	break;
5984	}
5985	fileRenamed = true;
5986	}
5987	}
5988
5989	/* update mConfigFileFull amd mConfigFile */
5990	Bstr oldConfigFileFull = mData->mConfigFileFull;
5991	Bstr oldConfigFile = mData->mConfigFile;
5992	mData->mConfigFileFull = newConfigFile;
5993	/* try to get the relative path for mConfigFile */
5994	Utf8Str path = newConfigFile;
5995	mParent->calculateRelativePath (path, path);
5996	mData->mConfigFile = path;
5997
5998	/* last, try to update the global settings with the new path */
5999	if (mData->mRegistered)
6000	{
6001	rc = mParent->updateSettings (configDir, newConfigDir);
6002	if (FAILED (rc))
6003	{
6004	/* revert to old values */
6005	mData->mConfigFileFull = oldConfigFileFull;
6006	mData->mConfigFile = oldConfigFile;
6007	break;
6008	}
6009	}
6010
6011	/* update the snapshot folder */
6012	path = mUserData->mSnapshotFolderFull;
6013	if (RTPathStartsWith (path, configDir))
6014	{
6015	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
6016	path.raw() + configDir.length());
6017	mUserData->mSnapshotFolderFull = path;
6018	calculateRelativePath (path, path);
6019	mUserData->mSnapshotFolder = path;
6020	}
6021
6022	/* update the saved state file path */
6023	path = mSSData->mStateFilePath;
6024	if (RTPathStartsWith (path, configDir))
6025	{
6026	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
6027	path.raw() + configDir.length());
6028	mSSData->mStateFilePath = path;
6029	}
6030
6031	/* Update saved state file paths of all online snapshots.
6032	* Note that saveSettings() will recognize name change
6033	* and will save all snapshots in this case. */
6034	if (mData->mFirstSnapshot)
6035	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
6036	newConfigDir);
6037	}
6038	while (0);
6039
6040	if (FAILED (rc))
6041	{
6042	/* silently try to rename everything back */
6043	if (fileRenamed)
6044	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
6045	if (dirRenamed)
6046	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
6047	}
6048
6049	if (!aNew)
6050	{
6051	/* lock the config again */
6052	HRESULT rc2 = lockConfig();
6053	if (SUCCEEDED (rc))
6054	rc = rc2;
6055	}
6056
6057	CheckComRCReturnRC (rc);
6058	}
6059
6060	if (aNew)
6061	{
6062	/* create a virgin config file */
6063	int vrc = VINF_SUCCESS;
6064
6065	/* ensure the settings directory exists */
6066	Utf8Str path = mData->mConfigFileFull;
6067	RTPathStripFilename (path.mutableRaw());
6068	if (!RTDirExists (path))
6069	{
6070	vrc = RTDirCreateFullPath (path, 0777);
6071	if (RT_FAILURE (vrc))
6072	{
6073	return setError (E_FAIL,
6074	tr ("Could not create a directory '%s' "
6075	"to save the settings file (%Rrc)"),
6076	path.raw(), vrc);
6077	}
6078	}
6079
6080	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
6081	path = Utf8Str (mData->mConfigFileFull);
6082	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
6083	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
6084	RTFILE_O_DENY_WRITE);
6085	if (RT_SUCCESS (vrc))
6086	{
6087	vrc = RTFileWrite (mData->mHandleCfgFile,
6088	(void *) gDefaultMachineConfig,
6089	strlen (gDefaultMachineConfig), NULL);
6090	}
6091	if (RT_FAILURE (vrc))
6092	{
6093	mData->mHandleCfgFile = NIL_RTFILE;
6094	return setError (E_FAIL,
6095	tr ("Could not create the settings file '%s' (%Rrc)"),
6096	path.raw(), vrc);
6097	}
6098	/* we do not close the file to simulate lockConfig() */
6099	}
6100
6101	return rc;
6102	}
6103
6104	/**
6105	* Saves and commits machine data, user data and hardware data.
6106	*
6107	* Note that on failure, the data remains uncommitted.
6108	*
6109	* @a aFlags may combine the following flags:
6110	*
6111	* - SaveS_ResetCurStateModified: Resets mData->mCurrentStateModified to FALSE.
6112	* Used when saving settings after an operation that makes them 100%
6113	* correspond to the settings from the current snapshot.
6114	* - SaveS_InformCallbacksAnyway: Callbacks will be informed even if
6115	* #isReallyModified() returns false. This is necessary for cases when we
6116	* change machine data diectly, not through the backup()/commit() mechanism.
6117	*
6118	* @note Must be called from under mParent write lock (sometimes needed by
6119	* #prepareSaveSettings()) and this object's write lock. Locks children for
6120	* writing. There is one exception when mParent is unused and therefore may be
6121	* left unlocked: if this machine is an unregistered one.
6122	*/
6123	HRESULT Machine::saveSettings (int aFlags /= 0/)
6124	{
6125	LogFlowThisFuncEnter();
6126
6127	/* Note: tecnhically, mParent needs to be locked only when the machine is
6128	* registered (see prepareSaveSettings() for details) but we don't
6129	* currently differentiate it in callers of saveSettings() so we don't
6130	* make difference here too. */
6131	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
6132	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
6133
6134	/* make sure child objects are unable to modify the settings while we are
6135	* saving them */
6136	ensureNoStateDependencies();
6137
6138	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6139
6140	BOOL currentStateModified = mData->mCurrentStateModified;
6141	bool settingsModified;
6142
6143	if (!(aFlags & SaveS_ResetCurStateModified) && !currentStateModified)
6144	{
6145	/* We ignore changes to user data when setting mCurrentStateModified
6146	* because the current state will not differ from the current snapshot
6147	* if only user data has been changed (user data is shared by all
6148	* snapshots). */
6149	currentStateModified = isReallyModified (true /* aIgnoreUserData */);
6150	settingsModified = mUserData.hasActualChanges() \|\| currentStateModified;
6151	}
6152	else
6153	{
6154	if (aFlags & SaveS_ResetCurStateModified)
6155	currentStateModified = FALSE;
6156	settingsModified = isReallyModified();
6157	}
6158
6159	HRESULT rc = S_OK;
6160
6161	/* First, prepare to save settings. It will care about renaming the
6162	* settings directory and file if the machine name was changed and about
6163	* creating a new settings file if this is a new machine. */
6164	bool isRenamed = false;
6165	bool isNew = false;
6166	rc = prepareSaveSettings (isRenamed, isNew);
6167	CheckComRCReturnRC (rc);
6168
6169	try
6170	{
6171	using namespace settings;
6172	using namespace xml;
6173
6174	/* this object is locked for writing to prevent concurrent reads and writes */
6175	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6176	XmlTreeBackend tree;
6177
6178	/* The newly created settings file is incomplete therefore we turn off
6179	* validation. The rest is like in loadSettingsTree_ForUpdate().*/
6180	rc = VirtualBox::loadSettingsTree (tree, file,
6181	!isNew /* aValidate */,
6182	false /* aCatchLoadErrors */,
6183	false /* aAddDefaults */);
6184	CheckComRCThrowRC (rc);
6185
6186	Key machineNode = tree.rootKey().createKey ("Machine");
6187
6188	/* uuid (required) */
6189	Assert (!mData->mUuid.isEmpty());
6190	machineNode.setValue <Guid> ("uuid", mData->mUuid);
6191
6192	/* name (required) */
6193	Assert (!mUserData->mName.isEmpty());
6194	machineNode.setValue <Bstr> ("name", mUserData->mName);
6195
6196	/* nameSync (optional, default is true) */
6197	machineNode.setValueOr <bool> ("nameSync", !!mUserData->mNameSync, true);
6198
6199	/* Description node (optional) */
6200	if (!mUserData->mDescription.isNull())
6201	{
6202	Key descNode = machineNode.createKey ("Description");
6203	descNode.setKeyValue <Bstr> (mUserData->mDescription);
6204	}
6205	else
6206	{
6207	Key descNode = machineNode.findKey ("Description");
6208	if (!descNode.isNull())
6209	descNode.zap();
6210	}
6211
6212	/* OSType (required) */
6213	machineNode.setValue <Bstr> ("OSType", mUserData->mOSTypeId);
6214
6215	/* stateFile (optional) */
6216	/// @todo The reason for MachineState_Restoring below:
6217	/// PushGuestProperties() is always called from Console::powerDown()
6218	/// (including the case when restoring from the saved state fails) and
6219	/// calls SaveSettings() to save guest properties. Since the saved state
6220	/// file is still present there (and should be kept), we must save it
6221	/// while in Restoring state too. However, calling SaveSettings() from
6222	/// PushGuestProperties() is wrong in the first place. A proper way is
6223	/// to only save guest properties node and not involve the whole save
6224	/// process.
6225	if (mData->mMachineState == MachineState_Saved \|\|
6226	mData->mMachineState == MachineState_Restoring)
6227	{
6228	Assert (!mSSData->mStateFilePath.isEmpty());
6229	/* try to make the file name relative to the settings file dir */
6230	Utf8Str stateFilePath = mSSData->mStateFilePath;
6231	calculateRelativePath (stateFilePath, stateFilePath);
6232	machineNode.setStringValue ("stateFile", stateFilePath);
6233	}
6234	else
6235	{
6236	Assert (mSSData->mStateFilePath.isNull());
6237	machineNode.zapValue ("stateFile");
6238	}
6239
6240	/* currentSnapshot ID (optional) */
6241	if (!mData->mCurrentSnapshot.isNull())
6242	{
6243	Assert (!mData->mFirstSnapshot.isNull());
6244	machineNode.setValue <Guid> ("currentSnapshot",
6245	mData->mCurrentSnapshot->data().mId);
6246	}
6247	else
6248	{
6249	Assert (mData->mFirstSnapshot.isNull());
6250	machineNode.zapValue ("currentSnapshot");
6251	}
6252
6253	/* snapshotFolder (optional) */
6254	/// @todo use the Bstr::NullOrEmpty constant and setValueOr
6255	if (!mUserData->mSnapshotFolder.isEmpty())
6256	machineNode.setValue <Bstr> ("snapshotFolder", mUserData->mSnapshotFolder);
6257	else
6258	machineNode.zapValue ("snapshotFolder");
6259
6260	/* currentStateModified (optional, default is true) */
6261	machineNode.setValueOr <bool> ("currentStateModified",
6262	!!currentStateModified, true);
6263
6264	/* lastStateChange */
6265	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
6266	mData->mLastStateChange);
6267
6268	/* set the aborted attribute when appropriate, defaults to false */
6269	machineNode.setValueOr <bool> ("aborted",
6270	mData->mMachineState == MachineState_Aborted,
6271	false);
6272
6273	/* Hardware node (required) */
6274	{
6275	/* first, delete the entire node if exists */
6276	Key hwNode = machineNode.findKey ("Hardware");
6277	if (!hwNode.isNull())
6278	hwNode.zap();
6279	/* then recreate it */
6280	hwNode = machineNode.createKey ("Hardware");
6281
6282	rc = saveHardware (hwNode);
6283	CheckComRCThrowRC (rc);
6284	}
6285
6286	/* StorageControllers node (required) */
6287	{
6288	/* first, delete the entire node if exists */
6289	Key storageNode = machineNode.findKey ("StorageControllers");
6290	if (!storageNode.isNull())
6291	storageNode.zap();
6292	/* then recreate it */
6293	storageNode = machineNode.createKey ("StorageControllers");
6294
6295	rc = saveStorageControllers (storageNode);
6296	CheckComRCThrowRC (rc);
6297	}
6298
6299	/* ask to save all snapshots when the machine name was changed since
6300	* it may affect saved state file paths for online snapshots (see
6301	* #openConfigLoader() for details) */
6302	if (isRenamed)
6303	{
6304	rc = saveSnapshotSettingsWorker (machineNode, NULL,
6305	SaveSS_UpdateAllOp);
6306	CheckComRCThrowRC (rc);
6307	}
6308
6309	/* save the settings on success */
6310	rc = VirtualBox::saveSettingsTree (tree, file,
6311	mData->mSettingsFileVersion);
6312	CheckComRCThrowRC (rc);
6313	}
6314	catch (HRESULT err)
6315	{
6316	/* we assume that error info is set by the thrower */
6317	rc = err;
6318	}
6319	catch (...)
6320	{
6321	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6322	}
6323
6324	if (SUCCEEDED (rc))
6325	{
6326	commit();
6327
6328	/* memorize the new modified state */
6329	mData->mCurrentStateModified = currentStateModified;
6330	}
6331
6332	if (settingsModified \|\| (aFlags & SaveS_InformCallbacksAnyway))
6333	{
6334	/* Fire the data change event, even on failure (since we've already
6335	* committed all data). This is done only for SessionMachines because
6336	* mutable Machine instances are always not registered (i.e. private
6337	* to the client process that creates them) and thus don't need to
6338	* inform callbacks. */
6339	if (mType == IsSessionMachine)
6340	mParent->onMachineDataChange (mData->mUuid);
6341	}
6342
6343	LogFlowThisFunc (("rc=%08X\n", rc));
6344	LogFlowThisFuncLeave();
6345	return rc;
6346	}
6347
6348	/**
6349	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
6350	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
6351	* for more details.
6352	*
6353	* @param aSnapshot Snapshot to operate on
6354	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6355	* or SaveSS_UpdateAttrsOp possibly combined with
6356	* SaveSS_UpdateCurrentId.
6357	*
6358	* @note Locks this object for writing + other child objects.
6359	*/
6360	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
6361	{
6362	AutoCaller autoCaller (this);
6363	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6364
6365	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6366
6367	/* This object's write lock is also necessary to serialize file access
6368	* (prevent concurrent reads and writes) */
6369	AutoWriteLock alock (this);
6370
6371	AssertReturn (isConfigLocked(), E_FAIL);
6372
6373	HRESULT rc = S_OK;
6374
6375	try
6376	{
6377	using namespace settings;
6378	using namespace xml;
6379
6380	/* load the settings file */
6381	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6382	XmlTreeBackend tree;
6383
6384	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
6385	CheckComRCReturnRC (rc);
6386
6387	Key machineNode = tree.rootKey().key ("Machine");
6388
6389	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
6390	CheckComRCReturnRC (rc);
6391
6392	/* save settings on success */
6393	rc = VirtualBox::saveSettingsTree (tree, file,
6394	mData->mSettingsFileVersion);
6395	CheckComRCReturnRC (rc);
6396	}
6397	catch (...)
6398	{
6399	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6400	}
6401
6402	return rc;
6403	}
6404
6405	/**
6406	* Performs the specified operation on the given snapshot
6407	* in the settings file represented by \a aMachineNode.
6408	*
6409	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
6410	* that the whole tree of the snapshots should be updated in <Machine>.
6411	* One particular case is when the last (and the only) snapshot should be
6412	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
6413	*
6414	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
6415	* attribute of <Machine> needs to be updated.
6416	*
6417	* @param aMachineNode <Machine> node in the opened settings file.
6418	* @param aSnapshot Snapshot to operate on.
6419	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6420	* or SaveSS_UpdateAttrsOp possibly combined with
6421	* SaveSS_UpdateCurrentId.
6422	*
6423	* @note Must be called with this object locked for writing.
6424	* Locks child objects.
6425	*/
6426	HRESULT Machine::saveSnapshotSettingsWorker (settings::Key &aMachineNode,
6427	Snapshot *aSnapshot, int aOpFlags)
6428	{
6429	using namespace settings;
6430
6431	AssertReturn (!aMachineNode.isNull(), E_FAIL);
6432
6433	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
6434
6435	int op = aOpFlags & SaveSS_OpMask;
6436	AssertReturn (
6437	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
6438	op == SaveSS_UpdateAllOp)) \|\|
6439	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_CurrentId)) \|\|
6440	op == SaveSS_UpdateAllOp)),
6441	E_FAIL);
6442
6443	HRESULT rc = S_OK;
6444
6445	bool recreateWholeTree = false;
6446
6447	do
6448	{
6449	if (op == SaveSS_NoOp)
6450	break;
6451
6452	/* quick path: recreate the whole tree of the snapshots */
6453	if (op == SaveSS_UpdateAllOp && aSnapshot == NULL)
6454	{
6455	/* first, delete the entire root snapshot node if it exists */
6456	Key snapshotNode = aMachineNode.findKey ("Snapshot");
6457	if (!snapshotNode.isNull())
6458	snapshotNode.zap();
6459
6460	/* second, if we have any snapshots left, substitute aSnapshot
6461	* with the first snapshot to recreate the whole tree, otherwise
6462	* break */
6463	if (mData->mFirstSnapshot)
6464	{
6465	aSnapshot = mData->mFirstSnapshot;
6466	recreateWholeTree = true;
6467	}
6468	else
6469	break;
6470	}
6471
6472	Assert (!!aSnapshot);
6473	ComObjPtr <Snapshot> parent = aSnapshot->parent();
6474
6475	if (op == SaveSS_AddOp)
6476	{
6477	Key parentNode;
6478
6479	if (parent)
6480	{
6481	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
6482	CheckComRCBreakRC (rc);
6483
6484	ComAssertBreak (!parentNode.isNull(), rc = E_FAIL);
6485	}
6486
6487	do
6488	{
6489	Key snapshotsNode;
6490
6491	if (!parentNode.isNull())
6492	snapshotsNode = parentNode.createKey ("Snapshots");
6493	else
6494	snapshotsNode = aMachineNode;
6495	do
6496	{
6497	Key snapshotNode = snapshotsNode.appendKey ("Snapshot");
6498	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6499	CheckComRCBreakRC (rc);
6500
6501	/* when a new snapshot is added, this means diffs were created
6502	* for every normal/immutable hard disk of the VM, so we need to
6503	* save the current hard disk attachments */
6504
6505	Key storageNode = aMachineNode.findKey ("StorageControllers");
6506	if (!storageNode.isNull())
6507	storageNode.zap();
6508	storageNode = aMachineNode.createKey ("StorageControllers");
6509
6510	rc = saveStorageControllers (storageNode);
6511	CheckComRCBreakRC (rc);
6512
6513	if (mHDData->mAttachments.size() != 0)
6514	{
6515	/* If we have one or more attachments then we definitely
6516	* created diffs for them and associated new diffs with
6517	* current settngs. So, since we don't use saveSettings(),
6518	* we need to inform callbacks manually. */
6519	if (mType == IsSessionMachine)
6520	mParent->onMachineDataChange (mData->mUuid);
6521	}
6522	}
6523	while (0);
6524	}
6525	while (0);
6526
6527	break;
6528	}
6529
6530	Assert ((op == SaveSS_UpdateAttrsOp && !recreateWholeTree) \|\|
6531	op == SaveSS_UpdateAllOp);
6532
6533	Key snapshotsNode;
6534	Key snapshotNode;
6535
6536	if (!recreateWholeTree)
6537	{
6538	rc = findSnapshotNode (aSnapshot, aMachineNode,
6539	&snapshotsNode, &snapshotNode);
6540	CheckComRCBreakRC (rc);
6541	}
6542
6543	if (snapshotsNode.isNull())
6544	snapshotsNode = aMachineNode;
6545
6546	if (op == SaveSS_UpdateAttrsOp)
6547	rc = saveSnapshot (snapshotNode, aSnapshot, true /* aAttrsOnly */);
6548	else
6549	{
6550	if (!snapshotNode.isNull())
6551	snapshotNode.zap();
6552
6553	snapshotNode = snapshotsNode.appendKey ("Snapshot");
6554	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6555	CheckComRCBreakRC (rc);
6556	}
6557	}
6558	while (0);
6559
6560	if (SUCCEEDED (rc))
6561	{
6562	/* update currentSnapshot when appropriate */
6563	if (aOpFlags & SaveSS_CurrentId)
6564	{
6565	if (!mData->mCurrentSnapshot.isNull())
6566	aMachineNode.setValue <Guid> ("currentSnapshot",
6567	mData->mCurrentSnapshot->data().mId);
6568	else
6569	aMachineNode.zapValue ("currentSnapshot");
6570	}
6571	if (aOpFlags & SaveSS_CurStateModified)
6572	{
6573	/* defaults to true */
6574	aMachineNode.setValueOr <bool> ("currentStateModified",
6575	!!mData->mCurrentStateModified, true);
6576	}
6577	}
6578
6579	return rc;
6580	}
6581
6582	/**
6583	* Saves the given snapshot and all its children (unless \a aAttrsOnly is true).
6584	* It is assumed that the given node is empty (unless \a aAttrsOnly is true).
6585	*
6586	* @param aNode <Snapshot> node to save the snapshot to.
6587	* @param aSnapshot Snapshot to save.
6588	* @param aAttrsOnly If true, only updatge user-changeable attrs.
6589	*/
6590	HRESULT Machine::saveSnapshot (settings::Key &aNode, Snapshot *aSnapshot, bool aAttrsOnly)
6591	{
6592	using namespace settings;
6593
6594	AssertReturn (!aNode.isNull() && aSnapshot, E_INVALIDARG);
6595	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6596
6597	/* uuid (required) */
6598	if (!aAttrsOnly)
6599	aNode.setValue <Guid> ("uuid", aSnapshot->data().mId);
6600
6601	/* name (required) */
6602	aNode.setValue <Bstr> ("name", aSnapshot->data().mName);
6603
6604	/* timeStamp (required) */
6605	aNode.setValue <RTTIMESPEC> ("timeStamp", aSnapshot->data().mTimeStamp);
6606
6607	/* Description node (optional) */
6608	if (!aSnapshot->data().mDescription.isNull())
6609	{
6610	Key descNode = aNode.createKey ("Description");
6611	descNode.setKeyValue <Bstr> (aSnapshot->data().mDescription);
6612	}
6613	else
6614	{
6615	Key descNode = aNode.findKey ("Description");
6616	if (!descNode.isNull())
6617	descNode.zap();
6618	}
6619
6620	if (aAttrsOnly)
6621	return S_OK;
6622
6623	/* stateFile (optional) */
6624	if (aSnapshot->stateFilePath())
6625	{
6626	/* try to make the file name relative to the settings file dir */
6627	Utf8Str stateFilePath = aSnapshot->stateFilePath();
6628	calculateRelativePath (stateFilePath, stateFilePath);
6629	aNode.setStringValue ("stateFile", stateFilePath);
6630	}
6631
6632	{
6633	ComObjPtr <SnapshotMachine> snapshotMachine = aSnapshot->data().mMachine;
6634	ComAssertRet (!snapshotMachine.isNull(), E_FAIL);
6635
6636	/* save hardware */
6637	{
6638	Key hwNode = aNode.createKey ("Hardware");
6639	HRESULT rc = snapshotMachine->saveHardware (hwNode);
6640	CheckComRCReturnRC (rc);
6641	}
6642
6643	/* save hard disks. */
6644	{
6645	Key storageNode = aNode.createKey ("StorageControllers");
6646	HRESULT rc = snapshotMachine->saveStorageControllers (storageNode);
6647	CheckComRCReturnRC (rc);
6648	}
6649	}
6650
6651	/* save children */
6652	{
6653	AutoWriteLock listLock (aSnapshot->childrenLock ());
6654
6655	if (aSnapshot->children().size())
6656	{
6657	Key snapshotsNode = aNode.createKey ("Snapshots");
6658
6659	HRESULT rc = S_OK;
6660
6661	for (Snapshot::SnapshotList::const_iterator it = aSnapshot->children().begin();
6662	it != aSnapshot->children().end();
6663	++ it)
6664	{
6665	Key snapshotNode = snapshotsNode.createKey ("Snapshot");
6666	rc = saveSnapshot (snapshotNode, (*it), aAttrsOnly);
6667	CheckComRCReturnRC (rc);
6668	}
6669	}
6670	}
6671
6672	return S_OK;
6673	}
6674
6675	/**
6676	* Saves the VM hardware configuration. It is assumed that the
6677	* given node is empty.
6678	*
6679	* @param aNode <Hardware> node to save the VM hardware confguration to.
6680	*/
6681	HRESULT Machine::saveHardware (settings::Key &aNode)
6682	{
6683	using namespace settings;
6684
6685	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6686
6687	HRESULT rc = S_OK;
6688
6689	/* The hardware version attribute (optional).
6690	Automatically upgrade from 1 to 2 when there is no saved state. (ugly!) */
6691	{
6692	Utf8Str hwVersion = mHWData->mHWVersion;
6693	if ( hwVersion.compare ("1") == 0
6694	&& mSSData->mStateFilePath.isEmpty())
6695	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. */
6696	if (hwVersion.compare ("2") == 0) /** @todo get the default from the schema if possible. */
6697	aNode.zapValue ("version");
6698	else
6699	aNode.setStringValue ("version", hwVersion.raw());
6700	}
6701
6702	/* CPU (optional, but always created atm) */
6703	{
6704	Key cpuNode = aNode.createKey ("CPU");
6705	Key hwVirtExNode = cpuNode.createKey ("HardwareVirtEx");
6706	const char *value = NULL;
6707	switch (mHWData->mHWVirtExEnabled)
6708	{
6709	case TSBool_False:
6710	value = "false";
6711	break;
6712	case TSBool_True:
6713	value = "true";
6714	break;
6715	case TSBool_Default:
6716	value = "default";
6717	break;
6718	}
6719	hwVirtExNode.setStringValue ("enabled", value);
6720
6721	/* Nested paging (optional, default is false) */
6722	if (mHWData->mHWVirtExNestedPagingEnabled)
6723	{
6724	Key HWVirtExNestedPagingNode = cpuNode.createKey ("HardwareVirtExNestedPaging");
6725	HWVirtExNestedPagingNode.setValue <bool> ("enabled", true);
6726	}
6727
6728	/* VPID (optional, default is false) */
6729	if (mHWData->mHWVirtExVPIDEnabled)
6730	{
6731	Key HWVirtExVPIDNode = cpuNode.createKey ("HardwareVirtExVPID");
6732	HWVirtExVPIDNode.setValue <bool> ("enabled", true);
6733	}
6734
6735	/* PAE (optional, default is false) */
6736	if (mHWData->mPAEEnabled)
6737	{
6738	Key PAENode = cpuNode.createKey ("PAE");
6739	PAENode.setValue <bool> ("enabled", true);
6740	}
6741
6742	/* CPU count */
6743	cpuNode.setValue <ULONG> ("count", mHWData->mCPUCount);
6744	}
6745
6746	/* memory (required) */
6747	{
6748	Key memoryNode = aNode.createKey ("Memory");
6749	memoryNode.setValue <ULONG> ("RAMSize", mHWData->mMemorySize);
6750	}
6751
6752	/* boot (required) */
6753	{
6754	Key bootNode = aNode.createKey ("Boot");
6755
6756	for (ULONG pos = 0; pos < RT_ELEMENTS (mHWData->mBootOrder); ++ pos)
6757	{
6758	const char *device = NULL;
6759	switch (mHWData->mBootOrder [pos])
6760	{
6761	case DeviceType_Null:
6762	/* skip, this is allowed for <Order> nodes
6763	* when loading, the default value NoDevice will remain */
6764	continue;
6765	case DeviceType_Floppy: device = "Floppy"; break;
6766	case DeviceType_DVD: device = "DVD"; break;
6767	case DeviceType_HardDisk: device = "HardDisk"; break;
6768	case DeviceType_Network: device = "Network"; break;
6769	default:
6770	{
6771	ComAssertMsgFailedRet (("Invalid boot device: %d",
6772	mHWData->mBootOrder [pos]),
6773	E_FAIL);
6774	}
6775	}
6776
6777	Key orderNode = bootNode.appendKey ("Order");
6778	orderNode.setValue <ULONG> ("position", pos + 1);
6779	orderNode.setStringValue ("device", device);
6780	}
6781	}
6782
6783	/* display (required) */
6784	{
6785	Key displayNode = aNode.createKey ("Display");
6786	displayNode.setValue <ULONG> ("VRAMSize", mHWData->mVRAMSize);
6787	displayNode.setValue <ULONG> ("monitorCount", mHWData->mMonitorCount);
6788	displayNode.setValue <bool> ("accelerate3D", !!mHWData->mAccelerate3DEnabled);
6789	}
6790
6791	#ifdef VBOX_WITH_VRDP
6792	/* VRDP settings (optional) */
6793	rc = mVRDPServer->saveSettings (aNode);
6794	CheckComRCReturnRC (rc);
6795	#endif
6796
6797	/* BIOS (required) */
6798	rc = mBIOSSettings->saveSettings (aNode);
6799	CheckComRCReturnRC (rc);
6800
6801	/* DVD drive (required) */
6802	rc = mDVDDrive->saveSettings (aNode);
6803	CheckComRCReturnRC (rc);
6804
6805	/* Flooppy drive (required) */
6806	rc = mFloppyDrive->saveSettings (aNode);
6807	CheckComRCReturnRC (rc);
6808
6809	/* USB Controller (required) */
6810	rc = mUSBController->saveSettings (aNode);
6811	CheckComRCReturnRC (rc);
6812
6813	/* Network adapters (required) */
6814	{
6815	Key nwNode = aNode.createKey ("Network");
6816
6817	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
6818	{
6819	Key adapterNode = nwNode.appendKey ("Adapter");
6820
6821	adapterNode.setValue <ULONG> ("slot", slot);
6822
6823	rc = mNetworkAdapters [slot]->saveSettings (adapterNode);
6824	CheckComRCReturnRC (rc);
6825	}
6826	}
6827
6828	/* Serial ports */
6829	{
6830	Key serialNode = aNode.createKey ("UART");
6831
6832	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); ++ slot)
6833	{
6834	Key portNode = serialNode.appendKey ("Port");
6835
6836	portNode.setValue <ULONG> ("slot", slot);
6837
6838	rc = mSerialPorts [slot]->saveSettings (portNode);
6839	CheckComRCReturnRC (rc);
6840	}
6841	}
6842
6843	/* Parallel ports */
6844	{
6845	Key parallelNode = aNode.createKey ("LPT");
6846
6847	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); ++ slot)
6848	{
6849	Key portNode = parallelNode.appendKey ("Port");
6850
6851	portNode.setValue <ULONG> ("slot", slot);
6852
6853	rc = mParallelPorts [slot]->saveSettings (portNode);
6854	CheckComRCReturnRC (rc);
6855	}
6856	}
6857
6858	/* Audio adapter */
6859	rc = mAudioAdapter->saveSettings (aNode);
6860	CheckComRCReturnRC (rc);
6861
6862	/* Shared folders */
6863	{
6864	Key sharedFoldersNode = aNode.createKey ("SharedFolders");
6865
6866	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
6867	it != mHWData->mSharedFolders.end();
6868	++ it)
6869	{
6870	ComObjPtr <SharedFolder> folder = *it;
6871
6872	Key folderNode = sharedFoldersNode.appendKey ("SharedFolder");
6873
6874	/* all are mandatory */
6875	folderNode.setValue <Bstr> ("name", folder->name());
6876	folderNode.setValue <Bstr> ("hostPath", folder->hostPath());
6877	folderNode.setValue <bool> ("writable", !!folder->writable());
6878	}
6879	}
6880
6881	/* Clipboard */
6882	{
6883	Key clipNode = aNode.createKey ("Clipboard");
6884
6885	const char *modeStr = "Disabled";
6886	switch (mHWData->mClipboardMode)
6887	{
6888	case ClipboardMode_Disabled:
6889	/* already assigned */
6890	break;
6891	case ClipboardMode_HostToGuest:
6892	modeStr = "HostToGuest";
6893	break;
6894	case ClipboardMode_GuestToHost:
6895	modeStr = "GuestToHost";
6896	break;
6897	case ClipboardMode_Bidirectional:
6898	modeStr = "Bidirectional";
6899	break;
6900	default:
6901	ComAssertMsgFailedRet (("Clipboard mode %d is invalid",
6902	mHWData->mClipboardMode),
6903	E_FAIL);
6904	}
6905	clipNode.setStringValue ("mode", modeStr);
6906	}
6907
6908	/* Guest */
6909	{
6910	Key guestNode = aNode.createKey ("Guest");
6911
6912	guestNode.setValue <ULONG> ("memoryBalloonSize",
6913	mHWData->mMemoryBalloonSize);
6914	guestNode.setValue <ULONG> ("statisticsUpdateInterval",
6915	mHWData->mStatisticsUpdateInterval);
6916	}
6917
6918	#ifdef VBOX_WITH_GUEST_PROPS
6919	/* Guest properties */
6920	try
6921	{
6922	using namespace guestProp;
6923
6924	Key guestPropertiesNode = aNode.createKey ("GuestProperties");
6925
6926	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
6927	it != mHWData->mGuestProperties.end(); ++it)
6928	{
6929	HWData::GuestProperty property = *it;
6930
6931	Key propertyNode = guestPropertiesNode.appendKey ("GuestProperty");
6932	char szFlags[MAX_FLAGS_LEN + 1];
6933
6934	propertyNode.setValue <Bstr> ("name", property.mName);
6935	propertyNode.setValue <Bstr> ("value", property.mValue);
6936	propertyNode.setValue <ULONG64> ("timestamp", property.mTimestamp);
6937	writeFlags (property.mFlags, szFlags);
6938	Bstr flags (szFlags);
6939	if (flags.isNull())
6940	return E_OUTOFMEMORY;
6941	propertyNode.setValue <Bstr> ("flags", flags);
6942	}
6943	Bstr emptyStr ("");
6944	if (emptyStr.isNull())
6945	return E_OUTOFMEMORY;
6946	guestPropertiesNode.setValueOr <Bstr> ("notificationPatterns",
6947	mHWData->mGuestPropertyNotificationPatterns,
6948	emptyStr);
6949	}
6950	catch (xml::ENoMemory e)
6951	{
6952	return E_OUTOFMEMORY;
6953	}
6954	#endif /* VBOX_WITH_GUEST_PROPS defined */
6955
6956	AssertComRC (rc);
6957	return rc;
6958	}
6959
6960	/**
6961	* Saves the storage controller configuration.
6962	*
6963	* @param aNode <StorageControllers> node to save the VM hardware confguration to.
6964	*/
6965	HRESULT Machine::saveStorageControllers (settings::Key &aNode)
6966	{
6967	using namespace settings;
6968
6969	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6970
6971	for (StorageControllerList::const_iterator
6972	it = mStorageControllers->begin();
6973	it != mStorageControllers->end();
6974	++ it)
6975	{
6976	HRESULT rc;
6977	const char *type = NULL;
6978	ComObjPtr <StorageController> ctl = *it;
6979
6980	Key ctlNode = aNode.appendKey ("StorageController");
6981
6982	ctlNode.setValue <Bstr> ("name", ctl->name());
6983
6984	switch (ctl->controllerType())
6985	{
6986	case StorageControllerType_IntelAhci: type = "AHCI"; break;
6987	case StorageControllerType_LsiLogic: type = "LsiLogic"; break;
6988	case StorageControllerType_BusLogic: type = "BusLogic"; break;
6989	case StorageControllerType_PIIX3: type = "PIIX3"; break;
6990	case StorageControllerType_PIIX4: type = "PIIX4"; break;
6991	case StorageControllerType_ICH6: type = "ICH6"; break;
6992	default:
6993	ComAssertFailedRet (E_FAIL);
6994	}
6995
6996	ctlNode.setStringValue ("type", type);
6997
6998	/* Save the port count. */
6999	ULONG portCount;
7000	rc = ctl->COMGETTER(PortCount)(&portCount);
7001	ComAssertRCRet(rc, rc);
7002	ctlNode.setValue <ULONG> ("PortCount", portCount);
7003
7004	/* Save IDE emulation settings. */
7005	if (ctl->controllerType() == StorageControllerType_IntelAhci)
7006	{
7007	LONG uVal;
7008
7009	rc = ctl->GetIDEEmulationPort(0, &uVal);
7010	ComAssertRCRet(rc, rc);
7011	ctlNode.setValue <LONG> ("IDE0MasterEmulationPort", uVal);
7012
7013	rc = ctl->GetIDEEmulationPort(1, &uVal);
7014	ComAssertRCRet(rc, rc);
7015	ctlNode.setValue <LONG> ("IDE0SlaveEmulationPort", uVal);
7016
7017	rc = ctl->GetIDEEmulationPort(2, &uVal);
7018	ComAssertRCRet(rc, rc);
7019	ctlNode.setValue <LONG> ("IDE1MasterEmulationPort", uVal);
7020
7021	rc = ctl->GetIDEEmulationPort(3, &uVal);
7022	ComAssertRCRet(rc, rc);
7023	ctlNode.setValue <LONG> ("IDE1SlaveEmulationPort", uVal);
7024	}
7025
7026	/* save the devices now. */
7027	rc = saveStorageDevices(ctl, ctlNode);
7028	ComAssertRCRet(rc, rc);
7029	}
7030
7031	return S_OK;
7032	}
7033
7034	/**
7035	* Saves the hard disk confguration.
7036	* It is assumed that the given node is empty.
7037	*
7038	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
7039	*/
7040	HRESULT Machine::saveStorageDevices (ComObjPtr<StorageController> aStorageController,
7041	settings::Key &aNode)
7042	{
7043	using namespace settings;
7044
7045	AssertReturn (!aNode.isNull(), E_INVALIDARG);
7046
7047	HDData::AttachmentList atts;
7048
7049	HRESULT rc = getHardDiskAttachmentsOfController(aStorageController->name(), atts);
7050	CheckComRCReturnRC(rc);
7051
7052	for (HDData::AttachmentList::const_iterator
7053	it = atts.begin();
7054	it != atts.end();
7055	++ it)
7056	{
7057	Key hdNode = aNode.appendKey ("AttachedDevice");
7058
7059	{
7060	/* device type. Only hard disk allowed atm. */
7061	hdNode.setStringValue ("type", "HardDisk");
7062	/* channel (required) */
7063	hdNode.setValue <LONG> ("port", (*it)->port());
7064	/* device (required) */
7065	hdNode.setValue <LONG> ("device", (*it)->device());
7066	/* ID of the image. */
7067	Key idNode = hdNode.appendKey ("Image");
7068	idNode.setValue <Guid> ("uuid", (*it)->hardDisk()->id());
7069	}
7070	}
7071
7072	return S_OK;
7073	}
7074
7075	/**
7076	* Saves machine state settings as defined by aFlags
7077	* (SaveSTS_* values).
7078	*
7079	* @param aFlags Combination of SaveSTS_* flags.
7080	*
7081	* @note Locks objects for writing.
7082	*/
7083	HRESULT Machine::saveStateSettings (int aFlags)
7084	{
7085	if (aFlags == 0)
7086	return S_OK;
7087
7088	AutoCaller autoCaller (this);
7089	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7090
7091	/* This object's write lock is also necessary to serialize file access
7092	* (prevent concurrent reads and writes) */
7093	AutoWriteLock alock (this);
7094
7095	AssertReturn (isConfigLocked(), E_FAIL);
7096
7097	HRESULT rc = S_OK;
7098
7099	try
7100	{
7101	using namespace settings;
7102	using namespace xml;
7103
7104	/* load the settings file */
7105	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
7106	XmlTreeBackend tree;
7107
7108	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
7109	CheckComRCReturnRC (rc);
7110
7111	Key machineNode = tree.rootKey().key ("Machine");
7112
7113	if (aFlags & SaveSTS_CurStateModified)
7114	{
7115	/* defaults to true */
7116	machineNode.setValueOr <bool> ("currentStateModified",
7117	!!mData->mCurrentStateModified, true);
7118	}
7119
7120	if (aFlags & SaveSTS_StateFilePath)
7121	{
7122	if (mSSData->mStateFilePath)
7123	{
7124	/* try to make the file name relative to the settings file dir */
7125	Utf8Str stateFilePath = mSSData->mStateFilePath;
7126	calculateRelativePath (stateFilePath, stateFilePath);
7127	machineNode.setStringValue ("stateFile", stateFilePath);
7128	}
7129	else
7130	machineNode.zapValue ("stateFile");
7131	}
7132
7133	if (aFlags & SaveSTS_StateTimeStamp)
7134	{
7135	Assert (mData->mMachineState != MachineState_Aborted \|\|
7136	mSSData->mStateFilePath.isNull());
7137
7138	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
7139	mData->mLastStateChange);
7140
7141	/* set the aborted attribute when appropriate, defaults to false */
7142	machineNode.setValueOr <bool> ("aborted",
7143	mData->mMachineState == MachineState_Aborted,
7144	false);
7145	}
7146
7147	/* save settings on success */
7148	rc = VirtualBox::saveSettingsTree (tree, file,
7149	mData->mSettingsFileVersion);
7150	CheckComRCReturnRC (rc);
7151	}
7152	catch (...)
7153	{
7154	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
7155	}
7156
7157	return rc;
7158	}
7159
7160	/**
7161	* Creates differencing hard disks for all normal hard disks attached to this
7162	* machine and a new set of attachments to refer to created disks.
7163	*
7164	* Used when taking a snapshot or when discarding the current state.
7165	*
7166	* This method assumes that mHDData contains the original hard disk attachments
7167	* it needs to create diffs for. On success, these attachments will be replaced
7168	* with the created diffs. On failure, #deleteImplicitDiffs() is implicitly
7169	* called to delete created diffs which will also rollback mHDData and restore
7170	* whatever was backed up before calling this method.
7171	*
7172	* Attachments with non-normal hard disks are left as is.
7173	*
7174	* If @a aOnline is @c false then the original hard disks that require implicit
7175	* diffs will be locked for reading. Otherwise it is assumed that they are
7176	* already locked for writing (when the VM was started). Note that in the latter
7177	* case it is responsibility of the caller to lock the newly created diffs for
7178	* writing if this method succeeds.
7179	*
7180	* @param aFolder Folder where to create diff hard disks.
7181	* @param aProgress Progress object to run (must contain at least as
7182	* many operations left as the number of hard disks
7183	* attached).
7184	* @param aOnline Whether the VM was online prior to this operation.
7185	*
7186	* @note The progress object is not marked as completed, neither on success nor
7187	* on failure. This is a responsibility of the caller.
7188	*
7189	* @note Locks this object for writing.
7190	*/
7191	HRESULT Machine::createImplicitDiffs (const Bstr &aFolder,
7192	ComObjPtr <Progress> &aProgress,
7193	bool aOnline)
7194	{
7195	AssertReturn (!aFolder.isEmpty(), E_FAIL);
7196
7197	AutoCaller autoCaller (this);
7198	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7199
7200	AutoWriteLock alock (this);
7201
7202	/* must be in a protective state because we leave the lock below */
7203	AssertReturn (mData->mMachineState == MachineState_Saving \|\|
7204	mData->mMachineState == MachineState_Discarding, E_FAIL);
7205
7206	HRESULT rc = S_OK;
7207
7208	typedef std::list< ComObjPtr<HardDisk> > LockedMedia;
7209	LockedMedia lockedMedia;
7210
7211	try
7212	{
7213	if (!aOnline)
7214	{
7215	/* lock all attached hard disks early to detect "in use"
7216	* situations before creating actual diffs */
7217	for (HDData::AttachmentList::const_iterator
7218	it = mHDData->mAttachments.begin();
7219	it != mHDData->mAttachments.end();
7220	++ it)
7221	{
7222	ComObjPtr<HardDiskAttachment> hda = *it;
7223	ComObjPtr<HardDisk> hd = hda->hardDisk();
7224
7225	rc = hd->LockRead (NULL);
7226	CheckComRCThrowRC (rc);
7227
7228	lockedMedia.push_back (hd);
7229	}
7230	}
7231
7232	/* remember the current list (note that we don't use backup() since
7233	* mHDData may be already backed up) */
7234	HDData::AttachmentList atts = mHDData->mAttachments;
7235
7236	/* start from scratch */
7237	mHDData->mAttachments.clear();
7238
7239	/* go through remembered attachments and create diffs for normal hard
7240	* disks and attach them */
7241
7242	for (HDData::AttachmentList::const_iterator
7243	it = atts.begin(); it != atts.end(); ++ it)
7244	{
7245	ComObjPtr<HardDiskAttachment> hda = *it;
7246	ComObjPtr<HardDisk> hd = hda->hardDisk();
7247
7248	/* type cannot be changed while attached => no need to lock */
7249	if (hd->type() != HardDiskType_Normal)
7250	{
7251	/* copy the attachment as is */
7252
7253	Assert (hd->type() == HardDiskType_Writethrough);
7254
7255	rc = aProgress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
7256	hd->root()->name().raw()),
7257	1); // weight
7258	CheckComRCThrowRC (rc);
7259
7260	mHDData->mAttachments.push_back (hda);
7261	continue;
7262	}
7263
7264	/* need a diff */
7265
7266	rc = aProgress->setNextOperation(BstrFmt(tr("Creating differencing hard disk for '%s'"),
7267	hd->root()->name().raw()),
7268	1); // weight
7269	CheckComRCThrowRC (rc);
7270
7271	ComObjPtr<HardDisk> diff;
7272	diff.createObject();
7273	rc = diff->init (mParent, hd->preferredDiffFormat(),
7274	BstrFmt ("%ls"RTPATH_SLASH_STR,
7275	mUserData->mSnapshotFolderFull.raw()));
7276	CheckComRCThrowRC (rc);
7277
7278	/* leave the lock before the potentially lengthy operation */
7279	alock.leave();
7280
7281	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard,
7282	&aProgress);
7283
7284	alock.enter();
7285
7286	CheckComRCThrowRC (rc);
7287
7288	rc = diff->attachTo (mData->mUuid);
7289	AssertComRCThrowRC (rc);
7290
7291	/* add a new attachment */
7292	ComObjPtr<HardDiskAttachment> attachment;
7293	attachment.createObject();
7294	rc = attachment->init (diff, hda->controller(), hda->port(),
7295	hda->device(), true /* aImplicit */);
7296	CheckComRCThrowRC (rc);
7297
7298	mHDData->mAttachments.push_back (attachment);
7299	}
7300	}
7301	catch (HRESULT aRC) { rc = aRC; }
7302
7303	/* unlock all hard disks we locked */
7304	if (!aOnline)
7305	{
7306	ErrorInfoKeeper eik;
7307
7308	for (LockedMedia::const_iterator it = lockedMedia.begin();
7309	it != lockedMedia.end(); ++ it)
7310	{
7311	HRESULT rc2 = (*it)->UnlockRead (NULL);
7312	AssertComRC (rc2);
7313	}
7314	}
7315
7316	if (FAILED (rc))
7317	{
7318	MultiResultRef mrc (rc);
7319
7320	mrc = deleteImplicitDiffs();
7321	}
7322
7323	return rc;
7324	}
7325
7326	/**
7327	* Deletes implicit differencing hard disks created either by
7328	* #createImplicitDiffs() or by #AttachHardDisk() and rolls back mHDData.
7329	*
7330	* Note that to delete hard disks created by #AttachHardDisk() this method is
7331	* called from #fixupHardDisks() when the changes are rolled back.
7332	*
7333	* @note Locks this object for writing.
7334	*/
7335	HRESULT Machine::deleteImplicitDiffs()
7336	{
7337	AutoCaller autoCaller (this);
7338	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7339
7340	AutoWriteLock alock (this);
7341
7342	AssertReturn (mHDData.isBackedUp(), E_FAIL);
7343
7344	HRESULT rc = S_OK;
7345
7346	HDData::AttachmentList implicitAtts;
7347
7348	const HDData::AttachmentList &oldAtts =
7349	mHDData.backedUpData()->mAttachments;
7350
7351	/* enumerate new attachments */
7352	for (HDData::AttachmentList::const_iterator
7353	it = mHDData->mAttachments.begin();
7354	it != mHDData->mAttachments.end(); ++ it)
7355	{
7356	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7357
7358	if ((*it)->isImplicit())
7359	{
7360	/* deassociate and mark for deletion */
7361	rc = hd->detachFrom (mData->mUuid);
7362	AssertComRC (rc);
7363	implicitAtts.push_back (*it);
7364	continue;
7365	}
7366
7367	/* was this hard disk attached before? */
7368	HDData::AttachmentList::const_iterator oldIt =
7369	std::find_if(oldAtts.begin(), oldAtts.end(),
7370	HardDiskAttachment::RefersTo (hd));
7371	if (oldIt == oldAtts.end())
7372	{
7373	/* no: de-associate */
7374	rc = hd->detachFrom (mData->mUuid);
7375	AssertComRC (rc);
7376	continue;
7377	}
7378	}
7379
7380	/* rollback hard disk changes */
7381	mHDData.rollback();
7382
7383	MultiResult mrc (S_OK);
7384
7385	/* delete unused implicit diffs */
7386	if (implicitAtts.size() != 0)
7387	{
7388	/* will leave the lock before the potentially lengthy
7389	* operation, so protect with the special state (unless already
7390	* protected) */
7391	MachineState_T oldState = mData->mMachineState;
7392	if (oldState != MachineState_Saving &&
7393	oldState != MachineState_Discarding)
7394	{
7395	setMachineState (MachineState_SettingUp);
7396	}
7397
7398	alock.leave();
7399
7400	for (HDData::AttachmentList::const_iterator
7401	it = implicitAtts.begin();
7402	it != implicitAtts.end(); ++ it)
7403	{
7404	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7405
7406	mrc = hd->deleteStorageAndWait();
7407	}
7408
7409	alock.enter();
7410
7411	if (mData->mMachineState == MachineState_SettingUp)
7412	{
7413	setMachineState (oldState);
7414	}
7415	}
7416
7417	return mrc;
7418	}
7419
7420	/**
7421	* Perform deferred hard disk detachments on success and deletion of implicitly
7422	* created diffs on failure.
7423	*
7424	* Does nothing if the hard disk attachment data (mHDData) is not changed (not
7425	* backed up).
7426	*
7427	* When the data is backed up, this method will commit mHDData if @a aCommit is
7428	* @c true and rollback it otherwise before returning.
7429	*
7430	* If @a aOnline is @c true then this method called with @a aCommit = @c true
7431	* will also unlock the old hard disks for which the new implicit diffs were
7432	* created and will lock these new diffs for writing. When @a aCommit is @c
7433	* false, this argument is ignored.
7434	*
7435	* @param aCommit @c true if called on success.
7436	* @param aOnline Whether the VM was online prior to this operation.
7437	*
7438	* @note Locks this object for writing!
7439	*/
7440	void Machine::fixupHardDisks(bool aCommit, bool aOnline /= false/)
7441	{
7442	AutoCaller autoCaller (this);
7443	AssertComRCReturnVoid (autoCaller.rc());
7444
7445	AutoWriteLock alock (this);
7446
7447	/* no attach/detach operations -- nothing to do */
7448	if (!mHDData.isBackedUp())
7449	return;
7450
7451	HRESULT rc = S_OK;
7452
7453	if (aCommit)
7454	{
7455	HDData::AttachmentList &oldAtts =
7456	mHDData.backedUpData()->mAttachments;
7457
7458	/* enumerate new attachments */
7459	for (HDData::AttachmentList::const_iterator
7460	it = mHDData->mAttachments.begin();
7461	it != mHDData->mAttachments.end(); ++ it)
7462	{
7463	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7464
7465	if ((*it)->isImplicit())
7466	{
7467	/* convert implicit attachment to normal */
7468	(*it)->setImplicit (false);
7469
7470	if (aOnline)
7471	{
7472	rc = hd->LockWrite (NULL);
7473	AssertComRC (rc);
7474
7475	mData->mSession.mLockedMedia.push_back (
7476	Data::Session::LockedMedia::value_type (
7477	ComPtr <IHardDisk> (hd), true));
7478
7479	/* also, relock the old hard disk which is a base for the
7480	* new diff for reading if the VM is online */
7481
7482	ComObjPtr<HardDisk> parent = hd->parent();
7483	/* make the relock atomic */
7484	AutoWriteLock parentLock (parent);
7485	rc = parent->UnlockWrite (NULL);
7486	AssertComRC (rc);
7487	rc = parent->LockRead (NULL);
7488	AssertComRC (rc);
7489
7490	/* XXX actually we should replace the old entry in that
7491	* vector (write lock => read lock) but this would take
7492	* some effort. So lets just ignore the error code in
7493	* SessionMachine::unlockMedia(). */
7494	mData->mSession.mLockedMedia.push_back (
7495	Data::Session::LockedMedia::value_type (
7496	ComPtr <IHardDisk> (parent), false));
7497	}
7498
7499	continue;
7500	}
7501
7502	/* was this hard disk attached before? */
7503	HDData::AttachmentList::iterator oldIt =
7504	std::find_if (oldAtts.begin(), oldAtts.end(),
7505	HardDiskAttachment::RefersTo (hd));
7506	if (oldIt != oldAtts.end())
7507	{
7508	/* yes: remove from old to avoid de-association */
7509	oldAtts.erase (oldIt);
7510	}
7511	}
7512
7513	/* enumerate remaining old attachments and de-associate from the
7514	* current machine state */
7515	for (HDData::AttachmentList::const_iterator it = oldAtts.begin();
7516	it != oldAtts.end(); ++ it)
7517	{
7518	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7519
7520	/* now de-associate from the current machine state */
7521	rc = hd->detachFrom (mData->mUuid);
7522	AssertComRC (rc);
7523
7524	if (aOnline)
7525	{
7526	/* unlock since not used anymore */
7527	MediaState_T state;
7528	rc = hd->UnlockWrite (&state);
7529	/* the disk may be alredy relocked for reading above */
7530	Assert (SUCCEEDED (rc) \|\| state == MediaState_LockedRead);
7531	}
7532	}
7533
7534	/* commit the hard disk changes */
7535	mHDData.commit();
7536
7537	if (mType == IsSessionMachine)
7538	{
7539	/* attach new data to the primary machine and reshare it */
7540	mPeer->mHDData.attach (mHDData);
7541	}
7542	}
7543	else
7544	{
7545	deleteImplicitDiffs();
7546	}
7547
7548	return;
7549	}
7550
7551	/**
7552	* Helper to lock the machine configuration for write access.
7553	*
7554	* @return S_OK or E_FAIL and sets error info on failure
7555	*
7556	* @note Doesn't lock anything (must be called from this object's lock)
7557	*/
7558	HRESULT Machine::lockConfig()
7559	{
7560	HRESULT rc = S_OK;
7561
7562	if (!isConfigLocked())
7563	{
7564	/* open the associated config file */
7565	int vrc = RTFileOpen (&mData->mHandleCfgFile,
7566	Utf8Str (mData->mConfigFileFull),
7567	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
7568	RTFILE_O_DENY_WRITE);
7569	if (RT_FAILURE (vrc) && (vrc != VERR_FILE_NOT_FOUND))
7570	{
7571	/* Open the associated config file only with read access. */
7572	vrc = RTFileOpen (&mData->mHandleCfgFile,
7573	Utf8Str (mData->mConfigFileFull),
7574	RTFILE_O_READ \| RTFILE_O_OPEN \|
7575	RTFILE_O_DENY_NONE);
7576	if (RT_FAILURE (vrc))
7577	{
7578	/* We even cannot open it in read mode, so there's seriously
7579	something wrong. */
7580	rc = setError (E_FAIL,
7581	tr ("Could not even open settings file '%ls' in read mode (%Rrc)"),
7582	mData->mConfigFile.raw(), vrc);
7583	}
7584	else
7585	{
7586	mData->mConfigFileReadonly = TRUE;
7587	}
7588	}
7589	else
7590	{
7591	mData->mConfigFileReadonly = FALSE;
7592	}
7593
7594	if (RT_FAILURE(vrc))
7595	{
7596	mData->mHandleCfgFile = NIL_RTFILE;
7597	mData->mConfigFileReadonly = FALSE;
7598	}
7599	}
7600
7601	LogFlowThisFunc (("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
7602	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
7603	return rc;
7604	}
7605
7606	/**
7607	* Helper to unlock the machine configuration from write access
7608	*
7609	* @return S_OK
7610	*
7611	* @note Doesn't lock anything.
7612	* @note Not thread safe (must be called from this object's lock).
7613	*/
7614	HRESULT Machine::unlockConfig()
7615	{
7616	HRESULT rc = S_OK;
7617
7618	if (isConfigLocked())
7619	{
7620	RTFileFlush (mData->mHandleCfgFile);
7621	RTFileClose (mData->mHandleCfgFile);
7622	/** @todo flush the directory. */
7623	mData->mHandleCfgFile = NIL_RTFILE;
7624	mData->mConfigFileReadonly = FALSE;
7625	}
7626
7627	LogFlowThisFunc (("\n"));
7628
7629	return rc;
7630	}
7631
7632	/**
7633	* Returns true if the settings file is located in the directory named exactly
7634	* as the machine. This will be true if the machine settings structure was
7635	* created by default in #openConfigLoader().
7636	*
7637	* @param aSettingsDir if not NULL, the full machine settings file directory
7638	* name will be assigned there.
7639	*
7640	* @note Doesn't lock anything.
7641	* @note Not thread safe (must be called from this object's lock).
7642	*/
7643	bool Machine::isInOwnDir (Utf8Str aSettingsDir / = NULL */)
7644	{
7645	Utf8Str settingsDir = mData->mConfigFileFull;
7646	RTPathStripFilename (settingsDir.mutableRaw());
7647	char *dirName = RTPathFilename (settingsDir);
7648
7649	AssertReturn (dirName, false);
7650
7651	/* if we don't rename anything on name change, return false shorlty */
7652	if (!mUserData->mNameSync)
7653	return false;
7654
7655	if (aSettingsDir)
7656	*aSettingsDir = settingsDir;
7657
7658	return Bstr (dirName) == mUserData->mName;
7659	}
7660
7661	/**
7662	* @note Locks objects for reading!
7663	*/
7664	bool Machine::isModified()
7665	{
7666	AutoCaller autoCaller (this);
7667	AssertComRCReturn (autoCaller.rc(), false);
7668
7669	AutoReadLock alock (this);
7670
7671	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7672	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
7673	return true;
7674
7675	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7676	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
7677	return true;
7678
7679	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7680	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
7681	return true;
7682
7683	if (!mStorageControllers.isNull())
7684	{
7685	for (StorageControllerList::const_iterator it =
7686	mStorageControllers->begin();
7687	it != mStorageControllers->end();
7688	++ it)
7689	{
7690	if ((*it)->isModified())
7691	return true;
7692	}
7693	}
7694
7695	return
7696	mUserData.isBackedUp() \|\|
7697	mHWData.isBackedUp() \|\|
7698	mHDData.isBackedUp() \|\|
7699	mStorageControllers.isBackedUp() \|\|
7700	#ifdef VBOX_WITH_VRDP
7701	(mVRDPServer && mVRDPServer->isModified()) \|\|
7702	#endif
7703	(mDVDDrive && mDVDDrive->isModified()) \|\|
7704	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
7705	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
7706	(mUSBController && mUSBController->isModified()) \|\|
7707	(mBIOSSettings && mBIOSSettings->isModified());
7708	}
7709
7710	/**
7711	* Returns the logical OR of data.hasActualChanges() of this and all child
7712	* objects.
7713	*
7714	* @param aIgnoreUserData @c true to ignore changes to mUserData
7715	*
7716	* @note Locks objects for reading!
7717	*/
7718	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
7719	{
7720	AutoCaller autoCaller (this);
7721	AssertComRCReturn (autoCaller.rc(), false);
7722
7723	AutoReadLock alock (this);
7724
7725	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7726	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
7727	return true;
7728
7729	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7730	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
7731	return true;
7732
7733	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7734	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
7735	return true;
7736
7737	if (!mStorageControllers.isBackedUp())
7738	{
7739	/* see whether any of the devices has changed its data */
7740	for (StorageControllerList::const_iterator
7741	it = mStorageControllers->begin();
7742	it != mStorageControllers->end();
7743	++ it)
7744	{
7745	if ((*it)->isReallyModified())
7746	return true;
7747	}
7748	}
7749	else
7750	{
7751	if (mStorageControllers->size() != mStorageControllers.backedUpData()->size())
7752	return true;
7753	}
7754
7755	return
7756	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
7757	mHWData.hasActualChanges() \|\|
7758	mHDData.hasActualChanges() \|\|
7759	mStorageControllers.hasActualChanges() \|\|
7760	#ifdef VBOX_WITH_VRDP
7761	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
7762	#endif
7763	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
7764	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
7765	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
7766	(mUSBController && mUSBController->isReallyModified()) \|\|
7767	(mBIOSSettings && mBIOSSettings->isReallyModified());
7768	}
7769
7770	/**
7771	* Discards all changes to machine settings.
7772	*
7773	* @param aNotify Whether to notify the direct session about changes or not.
7774	*
7775	* @note Locks objects for writing!
7776	*/
7777	void Machine::rollback (bool aNotify)
7778	{
7779	AutoCaller autoCaller (this);
7780	AssertComRCReturn (autoCaller.rc(), (void) 0);
7781
7782	AutoWriteLock alock (this);
7783
7784	/* check for changes in own data */
7785
7786	bool sharedFoldersChanged = false, storageChanged = false;
7787
7788	if (aNotify && mHWData.isBackedUp())
7789	{
7790	if (mHWData->mSharedFolders.size() !=
7791	mHWData.backedUpData()->mSharedFolders.size())
7792	sharedFoldersChanged = true;
7793	else
7794	{
7795	for (HWData::SharedFolderList::iterator rit =
7796	mHWData->mSharedFolders.begin();
7797	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
7798	++ rit)
7799	{
7800	for (HWData::SharedFolderList::iterator cit =
7801	mHWData.backedUpData()->mSharedFolders.begin();
7802	cit != mHWData.backedUpData()->mSharedFolders.end();
7803	++ cit)
7804	{
7805	if ((cit)->name() != (rit)->name() \|\|
7806	(cit)->hostPath() != (rit)->hostPath())
7807	{
7808	sharedFoldersChanged = true;
7809	break;
7810	}
7811	}
7812	}
7813	}
7814	}
7815
7816	if (!mStorageControllers.isNull())
7817	{
7818	if (mStorageControllers.isBackedUp())
7819	{
7820	/* unitialize all new devices (absent in the backed up list). */
7821	StorageControllerList::const_iterator it = mStorageControllers->begin();
7822	StorageControllerList *backedList = mStorageControllers.backedUpData();
7823	while (it != mStorageControllers->end())
7824	{
7825	if (std::find (backedList->begin(), backedList->end(), *it ) ==
7826	backedList->end())
7827	{
7828	(*it)->uninit();
7829	}
7830	++ it;
7831	}
7832
7833	/* restore the list */
7834	mStorageControllers.rollback();
7835	}
7836
7837	/* rollback any changes to devices after restoring the list */
7838	StorageControllerList::const_iterator it = mStorageControllers->begin();
7839	while (it != mStorageControllers->end())
7840	{
7841	if ((*it)->isModified())
7842	(*it)->rollback();
7843
7844	++ it;
7845	}
7846	}
7847
7848	mUserData.rollback();
7849
7850	mHWData.rollback();
7851
7852	if (mHDData.isBackedUp())
7853	fixupHardDisks(false /* aCommit */);
7854
7855	/* check for changes in child objects */
7856
7857	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
7858	usbChanged = false;
7859
7860	ComPtr <INetworkAdapter> networkAdapters [RT_ELEMENTS (mNetworkAdapters)];
7861	ComPtr <ISerialPort> serialPorts [RT_ELEMENTS (mSerialPorts)];
7862	ComPtr <IParallelPort> parallelPorts [RT_ELEMENTS (mParallelPorts)];
7863
7864	if (mBIOSSettings)
7865	mBIOSSettings->rollback();
7866
7867	#ifdef VBOX_WITH_VRDP
7868	if (mVRDPServer)
7869	vrdpChanged = mVRDPServer->rollback();
7870	#endif
7871
7872	if (mDVDDrive)
7873	dvdChanged = mDVDDrive->rollback();
7874
7875	if (mFloppyDrive)
7876	floppyChanged = mFloppyDrive->rollback();
7877
7878	if (mAudioAdapter)
7879	mAudioAdapter->rollback();
7880
7881	if (mUSBController)
7882	usbChanged = mUSBController->rollback();
7883
7884	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7885	if (mNetworkAdapters [slot])
7886	if (mNetworkAdapters [slot]->rollback())
7887	networkAdapters [slot] = mNetworkAdapters [slot];
7888
7889	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7890	if (mSerialPorts [slot])
7891	if (mSerialPorts [slot]->rollback())
7892	serialPorts [slot] = mSerialPorts [slot];
7893
7894	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7895	if (mParallelPorts [slot])
7896	if (mParallelPorts [slot]->rollback())
7897	parallelPorts [slot] = mParallelPorts [slot];
7898
7899	if (aNotify)
7900	{
7901	/* inform the direct session about changes */
7902
7903	ComObjPtr <Machine> that = this;
7904	alock.leave();
7905
7906	if (sharedFoldersChanged)
7907	that->onSharedFolderChange();
7908
7909	if (vrdpChanged)
7910	that->onVRDPServerChange();
7911	if (dvdChanged)
7912	that->onDVDDriveChange();
7913	if (floppyChanged)
7914	that->onFloppyDriveChange();
7915	if (usbChanged)
7916	that->onUSBControllerChange();
7917
7918	for (ULONG slot = 0; slot < RT_ELEMENTS (networkAdapters); slot ++)
7919	if (networkAdapters [slot])
7920	that->onNetworkAdapterChange (networkAdapters [slot]);
7921	for (ULONG slot = 0; slot < RT_ELEMENTS (serialPorts); slot ++)
7922	if (serialPorts [slot])
7923	that->onSerialPortChange (serialPorts [slot]);
7924	for (ULONG slot = 0; slot < RT_ELEMENTS (parallelPorts); slot ++)
7925	if (parallelPorts [slot])
7926	that->onParallelPortChange (parallelPorts [slot]);
7927
7928	if (storageChanged)
7929	that->onStorageControllerChange();
7930	}
7931	}
7932
7933	/**
7934	* Commits all the changes to machine settings.
7935	*
7936	* Note that this operation is supposed to never fail.
7937	*
7938	* @note Locks this object and children for writing.
7939	*/
7940	void Machine::commit()
7941	{
7942	AutoCaller autoCaller (this);
7943	AssertComRCReturnVoid (autoCaller.rc());
7944
7945	AutoCaller peerCaller (mPeer);
7946	AssertComRCReturnVoid (peerCaller.rc());
7947
7948	AutoMultiWriteLock2 alock (mPeer, this);
7949
7950	/*
7951	* use safe commit to ensure Snapshot machines (that share mUserData)
7952	* will still refer to a valid memory location
7953	*/
7954	mUserData.commitCopy();
7955
7956	mHWData.commit();
7957
7958	if (mHDData.isBackedUp())
7959	fixupHardDisks(true /* aCommit */);
7960
7961	mBIOSSettings->commit();
7962	#ifdef VBOX_WITH_VRDP
7963	mVRDPServer->commit();
7964	#endif
7965	mDVDDrive->commit();
7966	mFloppyDrive->commit();
7967	mAudioAdapter->commit();
7968	mUSBController->commit();
7969
7970	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7971	mNetworkAdapters [slot]->commit();
7972	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7973	mSerialPorts [slot]->commit();
7974	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7975	mParallelPorts [slot]->commit();
7976
7977	bool commitStorageControllers = false;
7978
7979	if (mStorageControllers.isBackedUp())
7980	{
7981	mStorageControllers.commit();
7982
7983	if (mPeer)
7984	{
7985	AutoWriteLock peerlock (mPeer);
7986
7987	/* Commit all changes to new controllers (this will reshare data with
7988	* peers for thos who have peers) */
7989	StorageControllerList *newList = new StorageControllerList();
7990	StorageControllerList::const_iterator it = mStorageControllers->begin();
7991	while (it != mStorageControllers->end())
7992	{
7993	(*it)->commit();
7994
7995	/* look if this controller has a peer device */
7996	ComObjPtr<StorageController> peer = (*it)->peer();
7997	if (!peer)
7998	{
7999	/* no peer means the device is a newly created one;
8000	* create a peer owning data this device share it with */
8001	peer.createObject();
8002	peer->init (mPeer, it, true / aReshare */);
8003	}
8004	else
8005	{
8006	/* remove peer from the old list */
8007	mPeer->mStorageControllers->remove (peer);
8008	}
8009	/* and add it to the new list */
8010	newList->push_back(peer);
8011
8012	++ it;
8013	}
8014
8015	/* uninit old peer's controllers that are left */
8016	it = mPeer->mStorageControllers->begin();
8017	while (it != mPeer->mStorageControllers->end())
8018	{
8019	(*it)->uninit();
8020	++ it;
8021	}
8022
8023	/* attach new list of controllers to our peer */
8024	mPeer->mStorageControllers.attach (newList);
8025	}
8026	else
8027	{
8028	/* we have no peer (our parent is the newly created machine);
8029	* just commit changes to devices */
8030	commitStorageControllers = true;
8031	}
8032	}
8033	else
8034	{
8035	/* the list of controllers itself is not changed,
8036	* just commit changes to controllers themselves */
8037	commitStorageControllers = true;
8038	}
8039
8040	if (commitStorageControllers)
8041	{
8042	StorageControllerList::const_iterator it = mStorageControllers->begin();
8043	while (it != mStorageControllers->end())
8044	{
8045	(*it)->commit();
8046	++ it;
8047	}
8048	}
8049
8050	if (mType == IsSessionMachine)
8051	{
8052	/* attach new data to the primary machine and reshare it */
8053	mPeer->mUserData.attach (mUserData);
8054	mPeer->mHWData.attach (mHWData);
8055	/* mHDData is reshared by fixupHardDisks */
8056	// mPeer->mHDData.attach (mHDData);
8057	Assert (mPeer->mHDData.data() == mHDData.data());
8058	}
8059	}
8060
8061	/**
8062	* Copies all the hardware data from the given machine.
8063	*
8064	* Currently, only called when the VM is being restored from a snapshot. In
8065	* particular, this implies that the VM is not running during this method's
8066	* call.
8067	*
8068	* @note This method must be called from under this object's lock.
8069	*
8070	* @note This method doesn't call #commit(), so all data remains backed up and
8071	* unsaved.
8072	*/
8073	void Machine::copyFrom (Machine *aThat)
8074	{
8075	AssertReturnVoid (mType == IsMachine \|\| mType == IsSessionMachine);
8076	AssertReturnVoid (aThat->mType == IsSnapshotMachine);
8077
8078	AssertReturnVoid (!Global::IsOnline (mData->mMachineState));
8079
8080	mHWData.assignCopy (aThat->mHWData);
8081
8082	// create copies of all shared folders (mHWData after attiching a copy
8083	// contains just references to original objects)
8084	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
8085	it != mHWData->mSharedFolders.end();
8086	++ it)
8087	{
8088	ComObjPtr <SharedFolder> folder;
8089	folder.createObject();
8090	HRESULT rc = folder->initCopy (machine(), *it);
8091	AssertComRC (rc);
8092	*it = folder;
8093	}
8094
8095	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
8096	#ifdef VBOX_WITH_VRDP
8097	mVRDPServer->copyFrom (aThat->mVRDPServer);
8098	#endif
8099	mDVDDrive->copyFrom (aThat->mDVDDrive);
8100	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
8101	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
8102	mUSBController->copyFrom (aThat->mUSBController);
8103
8104	/* create private copies of all controllers */
8105	mStorageControllers.backup();
8106	mStorageControllers->clear();
8107	for (StorageControllerList::iterator it = aThat->mStorageControllers->begin();
8108	it != aThat->mStorageControllers->end();
8109	++ it)
8110	{
8111	ComObjPtr <StorageController> ctrl;
8112	ctrl.createObject();
8113	ctrl->initCopy (this, *it);
8114	mStorageControllers->push_back(ctrl);
8115	}
8116
8117	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8118	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
8119	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8120	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
8121	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8122	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
8123	}
8124
8125	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8126	void Machine::registerMetrics (PerformanceCollector aCollector, Machine aMachine, RTPROCESS pid)
8127	{
8128	pm::CollectorHAL *hal = aCollector->getHAL();
8129	/* Create sub metrics */
8130	pm::SubMetric *cpuLoadUser = new pm::SubMetric ("CPU/Load/User",
8131	"Percentage of processor time spent in user mode by VM process.");
8132	pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
8133	"Percentage of processor time spent in kernel mode by VM process.");
8134	pm::SubMetric *ramUsageUsed = new pm::SubMetric ("RAM/Usage/Used",
8135	"Size of resident portion of VM process in memory.");
8136	/* Create and register base metrics */
8137	pm::BaseMetric *cpuLoad = new pm::MachineCpuLoadRaw (hal, aMachine, pid,
8138	cpuLoadUser, cpuLoadKernel);
8139	aCollector->registerBaseMetric (cpuLoad);
8140	pm::BaseMetric *ramUsage = new pm::MachineRamUsage (hal, aMachine, pid,
8141	ramUsageUsed);
8142	aCollector->registerBaseMetric (ramUsage);
8143
8144	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser, 0));
8145	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8146	new pm::AggregateAvg()));
8147	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8148	new pm::AggregateMin()));
8149	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8150	new pm::AggregateMax()));
8151	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel, 0));
8152	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8153	new pm::AggregateAvg()));
8154	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8155	new pm::AggregateMin()));
8156	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8157	new pm::AggregateMax()));
8158
8159	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed, 0));
8160	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8161	new pm::AggregateAvg()));
8162	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8163	new pm::AggregateMin()));
8164	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8165	new pm::AggregateMax()));
8166	};
8167
8168	void Machine::unregisterMetrics (PerformanceCollector aCollector, Machine aMachine)
8169	{
8170	aCollector->unregisterMetricsFor (aMachine);
8171	aCollector->unregisterBaseMetricsFor (aMachine);
8172	};
8173	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8174
8175
8176	/////////////////////////////////////////////////////////////////////////////
8177	// SessionMachine class
8178	/////////////////////////////////////////////////////////////////////////////
8179
8180	/** Task structure for asynchronous VM operations */
8181	struct SessionMachine::Task
8182	{
8183	Task (SessionMachine m, Progress p)
8184	: machine (m), progress (p)
8185	, state (m->mData->mMachineState) // save the current machine state
8186	, subTask (false)
8187	{}
8188
8189	void modifyLastState (MachineState_T s)
8190	{
8191	const_cast <MachineState_T > (&state) = s;
8192	}
8193
8194	virtual void handler() = 0;
8195
8196	ComObjPtr <SessionMachine> machine;
8197	ComObjPtr <Progress> progress;
8198	const MachineState_T state;
8199
8200	bool subTask : 1;
8201	};
8202
8203	/** Take snapshot task */
8204	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
8205	{
8206	TakeSnapshotTask (SessionMachine *m)
8207	: Task (m, NULL) {}
8208
8209	void handler() { machine->takeSnapshotHandler (*this); }
8210	};
8211
8212	/** Discard snapshot task */
8213	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
8214	{
8215	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
8216	: Task (m, p)
8217	, snapshot (s) {}
8218
8219	DiscardSnapshotTask (const Task &task, Snapshot *s)
8220	: Task (task)
8221	, snapshot (s) {}
8222
8223	void handler() { machine->discardSnapshotHandler (*this); }
8224
8225	ComObjPtr <Snapshot> snapshot;
8226	};
8227
8228	/** Discard current state task */
8229	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
8230	{
8231	DiscardCurrentStateTask (SessionMachine m, Progress p,
8232	bool discardCurSnapshot)
8233	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
8234
8235	void handler() { machine->discardCurrentStateHandler (*this); }
8236
8237	const bool discardCurrentSnapshot;
8238	};
8239
8240	////////////////////////////////////////////////////////////////////////////////
8241
8242	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
8243
8244	HRESULT SessionMachine::FinalConstruct()
8245	{
8246	LogFlowThisFunc (("\n"));
8247
8248	/* set the proper type to indicate we're the SessionMachine instance */
8249	unconst (mType) = IsSessionMachine;
8250
8251	#if defined(RT_OS_WINDOWS)
8252	mIPCSem = NULL;
8253	#elif defined(RT_OS_OS2)
8254	mIPCSem = NULLHANDLE;
8255	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8256	mIPCSem = -1;
8257	#else
8258	# error "Port me!"
8259	#endif
8260
8261	return S_OK;
8262	}
8263
8264	void SessionMachine::FinalRelease()
8265	{
8266	LogFlowThisFunc (("\n"));
8267
8268	uninit (Uninit::Unexpected);
8269	}
8270
8271	/**
8272	* @note Must be called only by Machine::openSession() from its own write lock.
8273	*/
8274	HRESULT SessionMachine::init (Machine *aMachine)
8275	{
8276	LogFlowThisFuncEnter();
8277	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
8278
8279	AssertReturn (aMachine, E_INVALIDARG);
8280
8281	AssertReturn (aMachine->lockHandle()->isWriteLockOnCurrentThread(), E_FAIL);
8282
8283	/* Enclose the state transition NotReady->InInit->Ready */
8284	AutoInitSpan autoInitSpan (this);
8285	AssertReturn (autoInitSpan.isOk(), E_FAIL);
8286
8287	/* create the interprocess semaphore */
8288	#if defined(RT_OS_WINDOWS)
8289	mIPCSemName = aMachine->mData->mConfigFileFull;
8290	for (size_t i = 0; i < mIPCSemName.length(); i++)
8291	if (mIPCSemName[i] == '\\')
8292	mIPCSemName[i] = '/';
8293	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
8294	ComAssertMsgRet (mIPCSem,
8295	("Cannot create IPC mutex '%ls', err=%d",
8296	mIPCSemName.raw(), ::GetLastError()),
8297	E_FAIL);
8298	#elif defined(RT_OS_OS2)
8299	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%RTuuid}",
8300	aMachine->mData->mUuid.raw());
8301	mIPCSemName = ipcSem;
8302	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
8303	ComAssertMsgRet (arc == NO_ERROR,
8304	("Cannot create IPC mutex '%s', arc=%ld",
8305	ipcSem.raw(), arc),
8306	E_FAIL);
8307	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8308	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8309	# if defined(RT_OS_FREEBSD) && (HC_ARCH_BITS == 64)
8310	/** @todo Check that this still works correctly. */
8311	AssertCompileSize(key_t, 8);
8312	# else
8313	AssertCompileSize(key_t, 4);
8314	# endif
8315	key_t key;
8316	mIPCSem = -1;
8317	mIPCKey = "0";
8318	for (uint32_t i = 0; i < 1 << 24; i++)
8319	{
8320	key = ((uint32_t)'V' << 24) \| i;
8321	int sem = ::semget (key, 1, S_IRUSR \| S_IWUSR \| IPC_CREAT \| IPC_EXCL);
8322	if (sem >= 0 \|\| (errno != EEXIST && errno != EACCES))
8323	{
8324	mIPCSem = sem;
8325	if (sem >= 0)
8326	mIPCKey = BstrFmt ("%u", key);
8327	break;
8328	}
8329	}
8330	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8331	Utf8Str semName = aMachine->mData->mConfigFileFull;
8332	char *pszSemName = NULL;
8333	RTStrUtf8ToCurrentCP (&pszSemName, semName);
8334	key_t key = ::ftok (pszSemName, 'V');
8335	RTStrFree (pszSemName);
8336
8337	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
8338	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8339
8340	int errnoSave = errno;
8341	if (mIPCSem < 0 && errnoSave == ENOSYS)
8342	{
8343	setError (E_FAIL,
8344	tr ("Cannot create IPC semaphore. Most likely your host kernel lacks "
8345	"support for SysV IPC. Check the host kernel configuration for "
8346	"CONFIG_SYSVIPC=y"));
8347	return E_FAIL;
8348	}
8349	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errnoSave),
8350	E_FAIL);
8351	/* set the initial value to 1 */
8352	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
8353	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
8354	E_FAIL);
8355	#else
8356	# error "Port me!"
8357	#endif
8358
8359	/* memorize the peer Machine */
8360	unconst (mPeer) = aMachine;
8361	/* share the parent pointer */
8362	unconst (mParent) = aMachine->mParent;
8363
8364	/* take the pointers to data to share */
8365	mData.share (aMachine->mData);
8366	mSSData.share (aMachine->mSSData);
8367
8368	mUserData.share (aMachine->mUserData);
8369	mHWData.share (aMachine->mHWData);
8370	mHDData.share (aMachine->mHDData);
8371
8372	mStorageControllers.allocate();
8373	StorageControllerList::const_iterator it = aMachine->mStorageControllers->begin();
8374	while (it != aMachine->mStorageControllers->end())
8375	{
8376	ComObjPtr <StorageController> ctl;
8377	ctl.createObject();
8378	ctl->init(this, *it);
8379	mStorageControllers->push_back (ctl);
8380	++ it;
8381	}
8382
8383	unconst (mBIOSSettings).createObject();
8384	mBIOSSettings->init (this, aMachine->mBIOSSettings);
8385	#ifdef VBOX_WITH_VRDP
8386	/* create another VRDPServer object that will be mutable */
8387	unconst (mVRDPServer).createObject();
8388	mVRDPServer->init (this, aMachine->mVRDPServer);
8389	#endif
8390	/* create another DVD drive object that will be mutable */
8391	unconst (mDVDDrive).createObject();
8392	mDVDDrive->init (this, aMachine->mDVDDrive);
8393	/* create another floppy drive object that will be mutable */
8394	unconst (mFloppyDrive).createObject();
8395	mFloppyDrive->init (this, aMachine->mFloppyDrive);
8396	/* create another audio adapter object that will be mutable */
8397	unconst (mAudioAdapter).createObject();
8398	mAudioAdapter->init (this, aMachine->mAudioAdapter);
8399	/* create a list of serial ports that will be mutable */
8400	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8401	{
8402	unconst (mSerialPorts [slot]).createObject();
8403	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
8404	}
8405	/* create a list of parallel ports that will be mutable */
8406	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8407	{
8408	unconst (mParallelPorts [slot]).createObject();
8409	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
8410	}
8411	/* create another USB controller object that will be mutable */
8412	unconst (mUSBController).createObject();
8413	mUSBController->init (this, aMachine->mUSBController);
8414
8415	/* create a list of network adapters that will be mutable */
8416	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8417	{
8418	unconst (mNetworkAdapters [slot]).createObject();
8419	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
8420	}
8421
8422	/* default is to delete saved state on Saved -> PoweredOff transition */
8423	mRemoveSavedState = true;
8424
8425	/* Confirm a successful initialization when it's the case */
8426	autoInitSpan.setSucceeded();
8427
8428	LogFlowThisFuncLeave();
8429	return S_OK;
8430	}
8431
8432	/**
8433	* Uninitializes this session object. If the reason is other than
8434	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
8435	*
8436	* @param aReason uninitialization reason
8437	*
8438	* @note Locks mParent + this object for writing.
8439	*/
8440	void SessionMachine::uninit (Uninit::Reason aReason)
8441	{
8442	LogFlowThisFuncEnter();
8443	LogFlowThisFunc (("reason=%d\n", aReason));
8444
8445	/*
8446	* Strongly reference ourselves to prevent this object deletion after
8447	* mData->mSession.mMachine.setNull() below (which can release the last
8448	* reference and call the destructor). Important: this must be done before
8449	* accessing any members (and before AutoUninitSpan that does it as well).
8450	* This self reference will be released as the very last step on return.
8451	*/
8452	ComObjPtr <SessionMachine> selfRef = this;
8453
8454	/* Enclose the state transition Ready->InUninit->NotReady */
8455	AutoUninitSpan autoUninitSpan (this);
8456	if (autoUninitSpan.uninitDone())
8457	{
8458	LogFlowThisFunc (("Already uninitialized\n"));
8459	LogFlowThisFuncLeave();
8460	return;
8461	}
8462
8463	if (autoUninitSpan.initFailed())
8464	{
8465	/* We've been called by init() because it's failed. It's not really
8466	* necessary (nor it's safe) to perform the regular uninit sequense
8467	* below, the following is enough.
8468	*/
8469	LogFlowThisFunc (("Initialization failed.\n"));
8470	#if defined(RT_OS_WINDOWS)
8471	if (mIPCSem)
8472	::CloseHandle (mIPCSem);
8473	mIPCSem = NULL;
8474	#elif defined(RT_OS_OS2)
8475	if (mIPCSem != NULLHANDLE)
8476	::DosCloseMutexSem (mIPCSem);
8477	mIPCSem = NULLHANDLE;
8478	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8479	if (mIPCSem >= 0)
8480	::semctl (mIPCSem, 0, IPC_RMID);
8481	mIPCSem = -1;
8482	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8483	mIPCKey = "0";
8484	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8485	#else
8486	# error "Port me!"
8487	#endif
8488	uninitDataAndChildObjects();
8489	mData.free();
8490	unconst (mParent).setNull();
8491	unconst (mPeer).setNull();
8492	LogFlowThisFuncLeave();
8493	return;
8494	}
8495
8496	/* We need to lock this object in uninit() because the lock is shared
8497	* with mPeer (as well as data we modify below). mParent->addProcessToReap()
8498	* and others need mParent lock. */
8499	AutoMultiWriteLock2 alock (mParent, this);
8500
8501	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8502	unregisterMetrics (mParent->performanceCollector(), mPeer);
8503	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8504
8505	MachineState_T lastState = mData->mMachineState;
8506	NOREF(lastState);
8507
8508	if (aReason == Uninit::Abnormal)
8509	{
8510	LogWarningThisFunc (("ABNORMAL client termination! (wasBusy=%d)\n",
8511	Global::IsOnlineOrTransient (lastState)));
8512
8513	/* reset the state to Aborted */
8514	if (mData->mMachineState != MachineState_Aborted)
8515	setMachineState (MachineState_Aborted);
8516	}
8517
8518	if (isModified())
8519	{
8520	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
8521	rollback (false /* aNotify */);
8522	}
8523
8524	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
8525	if (mSnapshotData.mStateFilePath)
8526	{
8527	LogWarningThisFunc (("canceling failed save state request!\n"));
8528	endSavingState (FALSE /* aSuccess */);
8529	}
8530	else if (!mSnapshotData.mSnapshot.isNull())
8531	{
8532	LogWarningThisFunc (("canceling untaken snapshot!\n"));
8533	endTakingSnapshot (FALSE /* aSuccess */);
8534	}
8535
8536	#ifdef VBOX_WITH_USB
8537	/* release all captured USB devices */
8538	if (aReason == Uninit::Abnormal && Global::IsOnline (lastState))
8539	{
8540	/* Console::captureUSBDevices() is called in the VM process only after
8541	* setting the machine state to Starting or Restoring.
8542	* Console::detachAllUSBDevices() will be called upon successful
8543	* termination. So, we need to release USB devices only if there was
8544	* an abnormal termination of a running VM.
8545	*
8546	* This is identical to SessionMachine::DetachAllUSBDevices except
8547	* for the aAbnormal argument. */
8548	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8549	AssertComRC (rc);
8550	NOREF (rc);
8551
8552	USBProxyService *service = mParent->host()->usbProxyService();
8553	if (service)
8554	service->detachAllDevicesFromVM (this, true /* aDone /, true / aAbnormal */);
8555	}
8556	#endif /* VBOX_WITH_USB */
8557
8558	if (!mData->mSession.mType.isNull())
8559	{
8560	/* mType is not null when this machine's process has been started by
8561	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
8562	* need to queue the PID to reap the process (and avoid zombies on
8563	* Linux). */
8564	Assert (mData->mSession.mPid != NIL_RTPROCESS);
8565	mParent->addProcessToReap (mData->mSession.mPid);
8566	}
8567
8568	mData->mSession.mPid = NIL_RTPROCESS;
8569
8570	if (aReason == Uninit::Unexpected)
8571	{
8572	/* Uninitialization didn't come from #checkForDeath(), so tell the
8573	* client watcher thread to update the set of machines that have open
8574	* sessions. */
8575	mParent->updateClientWatcher();
8576	}
8577
8578	/* uninitialize all remote controls */
8579	if (mData->mSession.mRemoteControls.size())
8580	{
8581	LogFlowThisFunc (("Closing remote sessions (%d):\n",
8582	mData->mSession.mRemoteControls.size()));
8583
8584	Data::Session::RemoteControlList::iterator it =
8585	mData->mSession.mRemoteControls.begin();
8586	while (it != mData->mSession.mRemoteControls.end())
8587	{
8588	LogFlowThisFunc ((" Calling remoteControl->Uninitialize()...\n"));
8589	HRESULT rc = (*it)->Uninitialize();
8590	LogFlowThisFunc ((" remoteControl->Uninitialize() returned %08X\n", rc));
8591	if (FAILED (rc))
8592	LogWarningThisFunc (("Forgot to close the remote session?\n"));
8593	++ it;
8594	}
8595	mData->mSession.mRemoteControls.clear();
8596	}
8597
8598	/*
8599	* An expected uninitialization can come only from #checkForDeath().
8600	* Otherwise it means that something's got really wrong (for examlple,
8601	* the Session implementation has released the VirtualBox reference
8602	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
8603	* etc). However, it's also possible, that the client releases the IPC
8604	* semaphore correctly (i.e. before it releases the VirtualBox reference),
8605	* but the VirtualBox release event comes first to the server process.
8606	* This case is practically possible, so we should not assert on an
8607	* unexpected uninit, just log a warning.
8608	*/
8609
8610	if ((aReason == Uninit::Unexpected))
8611	LogWarningThisFunc (("Unexpected SessionMachine uninitialization!\n"));
8612
8613	if (aReason != Uninit::Normal)
8614	{
8615	mData->mSession.mDirectControl.setNull();
8616	}
8617	else
8618	{
8619	/* this must be null here (see #OnSessionEnd()) */
8620	Assert (mData->mSession.mDirectControl.isNull());
8621	Assert (mData->mSession.mState == SessionState_Closing);
8622	Assert (!mData->mSession.mProgress.isNull());
8623
8624	mData->mSession.mProgress->notifyComplete (S_OK);
8625	mData->mSession.mProgress.setNull();
8626	}
8627
8628	/* remove the association between the peer machine and this session machine */
8629	Assert (mData->mSession.mMachine == this \|\|
8630	aReason == Uninit::Unexpected);
8631
8632	/* reset the rest of session data */
8633	mData->mSession.mMachine.setNull();
8634	mData->mSession.mState = SessionState_Closed;
8635	mData->mSession.mType.setNull();
8636
8637	/* close the interprocess semaphore before leaving the shared lock */
8638	#if defined(RT_OS_WINDOWS)
8639	if (mIPCSem)
8640	::CloseHandle (mIPCSem);
8641	mIPCSem = NULL;
8642	#elif defined(RT_OS_OS2)
8643	if (mIPCSem != NULLHANDLE)
8644	::DosCloseMutexSem (mIPCSem);
8645	mIPCSem = NULLHANDLE;
8646	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8647	if (mIPCSem >= 0)
8648	::semctl (mIPCSem, 0, IPC_RMID);
8649	mIPCSem = -1;
8650	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8651	mIPCKey = "0";
8652	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8653	#else
8654	# error "Port me!"
8655	#endif
8656
8657	/* fire an event */
8658	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
8659
8660	uninitDataAndChildObjects();
8661
8662	/* free the essential data structure last */
8663	mData.free();
8664
8665	/* leave the shared lock before setting the below two to NULL */
8666	alock.leave();
8667
8668	unconst (mParent).setNull();
8669	unconst (mPeer).setNull();
8670
8671	LogFlowThisFuncLeave();
8672	}
8673
8674	// util::Lockable interface
8675	////////////////////////////////////////////////////////////////////////////////
8676
8677	/**
8678	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
8679	* with the primary Machine instance (mPeer).
8680	*/
8681	RWLockHandle *SessionMachine::lockHandle() const
8682	{
8683	AssertReturn (!mPeer.isNull(), NULL);
8684	return mPeer->lockHandle();
8685	}
8686
8687	// IInternalMachineControl methods
8688	////////////////////////////////////////////////////////////////////////////////
8689
8690	/**
8691	* @note Locks this object for writing.
8692	*/
8693	STDMETHODIMP SessionMachine::SetRemoveSavedState(BOOL aRemove)
8694	{
8695	AutoCaller autoCaller (this);
8696	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8697
8698	AutoWriteLock alock (this);
8699
8700	mRemoveSavedState = aRemove;
8701
8702	return S_OK;
8703	}
8704
8705	/**
8706	* @note Locks the same as #setMachineState() does.
8707	*/
8708	STDMETHODIMP SessionMachine::UpdateState (MachineState_T aMachineState)
8709	{
8710	return setMachineState (aMachineState);
8711	}
8712
8713	/**
8714	* @note Locks this object for reading.
8715	*/
8716	STDMETHODIMP SessionMachine::GetIPCId (BSTR *aId)
8717	{
8718	AutoCaller autoCaller (this);
8719	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8720
8721	AutoReadLock alock (this);
8722
8723	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
8724	mIPCSemName.cloneTo (aId);
8725	return S_OK;
8726	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8727	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8728	mIPCKey.cloneTo (aId);
8729	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8730	mData->mConfigFileFull.cloneTo (aId);
8731	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8732	return S_OK;
8733	#else
8734	# error "Port me!"
8735	#endif
8736	}
8737
8738	/**
8739	* Goes through the USB filters of the given machine to see if the given
8740	* device matches any filter or not.
8741	*
8742	* @note Locks the same as USBController::hasMatchingFilter() does.
8743	*/
8744	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
8745	BOOL *aMatched,
8746	ULONG *aMaskedIfs)
8747	{
8748	LogFlowThisFunc (("\n"));
8749
8750	CheckComArgNotNull (aUSBDevice);
8751	CheckComArgOutPointerValid (aMatched);
8752
8753	AutoCaller autoCaller (this);
8754	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8755
8756	#ifdef VBOX_WITH_USB
8757	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
8758	#else
8759	NOREF(aUSBDevice);
8760	NOREF(aMaskedIfs);
8761	*aMatched = FALSE;
8762	#endif
8763
8764	return S_OK;
8765	}
8766
8767	/**
8768	* @note Locks the same as Host::captureUSBDevice() does.
8769	*/
8770	STDMETHODIMP SessionMachine::CaptureUSBDevice (IN_BSTR aId)
8771	{
8772	LogFlowThisFunc (("\n"));
8773
8774	AutoCaller autoCaller (this);
8775	AssertComRCReturnRC (autoCaller.rc());
8776
8777	#ifdef VBOX_WITH_USB
8778	/* if captureDeviceForVM() fails, it must have set extended error info */
8779	MultiResult rc = mParent->host()->checkUSBProxyService();
8780	CheckComRCReturnRC (rc);
8781
8782	USBProxyService *service = mParent->host()->usbProxyService();
8783	AssertReturn (service, E_FAIL);
8784	return service->captureDeviceForVM (this, Guid(aId));
8785	#else
8786	NOREF(aId);
8787	return E_NOTIMPL;
8788	#endif
8789	}
8790
8791	/**
8792	* @note Locks the same as Host::detachUSBDevice() does.
8793	*/
8794	STDMETHODIMP SessionMachine::DetachUSBDevice (IN_BSTR aId, BOOL aDone)
8795	{
8796	LogFlowThisFunc (("\n"));
8797
8798	AutoCaller autoCaller (this);
8799	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8800
8801	#ifdef VBOX_WITH_USB
8802	USBProxyService *service = mParent->host()->usbProxyService();
8803	AssertReturn (service, E_FAIL);
8804	return service->detachDeviceFromVM (this, Guid(aId), !!aDone);
8805	#else
8806	NOREF(aId);
8807	NOREF(aDone);
8808	return E_NOTIMPL;
8809	#endif
8810	}
8811
8812	/**
8813	* Inserts all machine filters to the USB proxy service and then calls
8814	* Host::autoCaptureUSBDevices().
8815	*
8816	* Called by Console from the VM process upon VM startup.
8817	*
8818	* @note Locks what called methods lock.
8819	*/
8820	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
8821	{
8822	LogFlowThisFunc (("\n"));
8823
8824	AutoCaller autoCaller (this);
8825	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8826
8827	#ifdef VBOX_WITH_USB
8828	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
8829	AssertComRC (rc);
8830	NOREF (rc);
8831
8832	USBProxyService *service = mParent->host()->usbProxyService();
8833	AssertReturn (service, E_FAIL);
8834	return service->autoCaptureDevicesForVM (this);
8835	#else
8836	return S_OK;
8837	#endif
8838	}
8839
8840	/**
8841	* Removes all machine filters from the USB proxy service and then calls
8842	* Host::detachAllUSBDevices().
8843	*
8844	* Called by Console from the VM process upon normal VM termination or by
8845	* SessionMachine::uninit() upon abnormal VM termination (from under the
8846	* Machine/SessionMachine lock).
8847	*
8848	* @note Locks what called methods lock.
8849	*/
8850	STDMETHODIMP SessionMachine::DetachAllUSBDevices (BOOL aDone)
8851	{
8852	LogFlowThisFunc (("\n"));
8853
8854	AutoCaller autoCaller (this);
8855	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8856
8857	#ifdef VBOX_WITH_USB
8858	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8859	AssertComRC (rc);
8860	NOREF (rc);
8861
8862	USBProxyService *service = mParent->host()->usbProxyService();
8863	AssertReturn (service, E_FAIL);
8864	return service->detachAllDevicesFromVM (this, !!aDone, false /* aAbnormal */);
8865	#else
8866	NOREF(aDone);
8867	return S_OK;
8868	#endif
8869	}
8870
8871	/**
8872	* @note Locks this object for writing.
8873	*/
8874	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
8875	IProgress **aProgress)
8876	{
8877	LogFlowThisFuncEnter();
8878
8879	AssertReturn (aSession, E_INVALIDARG);
8880	AssertReturn (aProgress, E_INVALIDARG);
8881
8882	AutoCaller autoCaller (this);
8883
8884	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8885	/*
8886	* We don't assert below because it might happen that a non-direct session
8887	* informs us it is closed right after we've been uninitialized -- it's ok.
8888	*/
8889	CheckComRCReturnRC (autoCaller.rc());
8890
8891	/* get IInternalSessionControl interface */
8892	ComPtr <IInternalSessionControl> control (aSession);
8893
8894	ComAssertRet (!control.isNull(), E_INVALIDARG);
8895
8896	AutoWriteLock alock (this);
8897
8898	if (control.equalsTo (mData->mSession.mDirectControl))
8899	{
8900	ComAssertRet (aProgress, E_POINTER);
8901
8902	/* The direct session is being normally closed by the client process
8903	* ----------------------------------------------------------------- */
8904
8905	/* go to the closing state (essential for all open*Session() calls and
8906	* for #checkForDeath()) */
8907	Assert (mData->mSession.mState == SessionState_Open);
8908	mData->mSession.mState = SessionState_Closing;
8909
8910	/* set direct control to NULL to release the remote instance */
8911	mData->mSession.mDirectControl.setNull();
8912	LogFlowThisFunc (("Direct control is set to NULL\n"));
8913
8914	/* Create the progress object the client will use to wait until
8915	* #checkForDeath() is called to uninitialize this session object after
8916	* it releases the IPC semaphore. */
8917	ComObjPtr <Progress> progress;
8918	progress.createObject();
8919	progress->init (mParent, static_cast <IMachine *> (mPeer),
8920	Bstr (tr ("Closing session")), FALSE /* aCancelable */);
8921	progress.queryInterfaceTo (aProgress);
8922	mData->mSession.mProgress = progress;
8923	}
8924	else
8925	{
8926	/* the remote session is being normally closed */
8927	Data::Session::RemoteControlList::iterator it =
8928	mData->mSession.mRemoteControls.begin();
8929	while (it != mData->mSession.mRemoteControls.end())
8930	{
8931	if (control.equalsTo (*it))
8932	break;
8933	++it;
8934	}
8935	BOOL found = it != mData->mSession.mRemoteControls.end();
8936	ComAssertMsgRet (found, ("The session is not found in the session list!"),
8937	E_INVALIDARG);
8938	mData->mSession.mRemoteControls.remove (*it);
8939	}
8940
8941	LogFlowThisFuncLeave();
8942	return S_OK;
8943	}
8944
8945	/**
8946	* @note Locks this object for writing.
8947	*/
8948	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
8949	{
8950	LogFlowThisFuncEnter();
8951
8952	AssertReturn (aProgress, E_INVALIDARG);
8953	AssertReturn (aStateFilePath, E_POINTER);
8954
8955	AutoCaller autoCaller (this);
8956	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8957
8958	AutoWriteLock alock (this);
8959
8960	AssertReturn (mData->mMachineState == MachineState_Paused &&
8961	mSnapshotData.mLastState == MachineState_Null &&
8962	mSnapshotData.mProgressId.isEmpty() &&
8963	mSnapshotData.mStateFilePath.isNull(),
8964	E_FAIL);
8965
8966	/* memorize the progress ID and add it to the global collection */
8967	Bstr progressId;
8968	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
8969	AssertComRCReturn (rc, rc);
8970	rc = mParent->addProgress (aProgress);
8971	AssertComRCReturn (rc, rc);
8972
8973	Bstr stateFilePath;
8974	/* stateFilePath is null when the machine is not running */
8975	if (mData->mMachineState == MachineState_Paused)
8976	{
8977	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
8978	mUserData->mSnapshotFolderFull.raw(),
8979	RTPATH_DELIMITER, mData->mUuid.raw());
8980	}
8981
8982	/* fill in the snapshot data */
8983	mSnapshotData.mLastState = mData->mMachineState;
8984	mSnapshotData.mProgressId = Guid(progressId);
8985	mSnapshotData.mStateFilePath = stateFilePath;
8986
8987	/* set the state to Saving (this is expected by Console::SaveState()) */
8988	setMachineState (MachineState_Saving);
8989
8990	stateFilePath.cloneTo (aStateFilePath);
8991
8992	return S_OK;
8993	}
8994
8995	/**
8996	* @note Locks mParent + this object for writing.
8997	*/
8998	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
8999	{
9000	LogFlowThisFunc (("\n"));
9001
9002	AutoCaller autoCaller (this);
9003	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9004
9005	/* endSavingState() need mParent lock */
9006	AutoMultiWriteLock2 alock (mParent, this);
9007
9008	AssertReturn (mData->mMachineState == MachineState_Saving &&
9009	mSnapshotData.mLastState != MachineState_Null &&
9010	!mSnapshotData.mProgressId.isEmpty() &&
9011	!mSnapshotData.mStateFilePath.isNull(),
9012	E_FAIL);
9013
9014	/*
9015	* on success, set the state to Saved;
9016	* on failure, set the state to the state we had when BeginSavingState() was
9017	* called (this is expected by Console::SaveState() and
9018	* Console::saveStateThread())
9019	*/
9020	if (aSuccess)
9021	setMachineState (MachineState_Saved);
9022	else
9023	setMachineState (mSnapshotData.mLastState);
9024
9025	return endSavingState (aSuccess);
9026	}
9027
9028	/**
9029	* @note Locks this object for writing.
9030	*/
9031	STDMETHODIMP SessionMachine::AdoptSavedState (IN_BSTR aSavedStateFile)
9032	{
9033	LogFlowThisFunc (("\n"));
9034
9035	AssertReturn (aSavedStateFile, E_INVALIDARG);
9036
9037	AutoCaller autoCaller (this);
9038	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9039
9040	AutoWriteLock alock (this);
9041
9042	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
9043	mData->mMachineState == MachineState_Aborted,
9044	E_FAIL);
9045
9046	Utf8Str stateFilePathFull = aSavedStateFile;
9047	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
9048	if (RT_FAILURE (vrc))
9049	return setError (VBOX_E_FILE_ERROR,
9050	tr ("Invalid saved state file path '%ls' (%Rrc)"),
9051	aSavedStateFile, vrc);
9052
9053	mSSData->mStateFilePath = stateFilePathFull;
9054
9055	/* The below setMachineState() will detect the state transition and will
9056	* update the settings file */
9057
9058	return setMachineState (MachineState_Saved);
9059	}
9060
9061	/**
9062	* @note Locks mParent + this object for writing.
9063	*/
9064	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
9065	IConsole *aInitiator, IN_BSTR aName, IN_BSTR aDescription,
9066	IProgress aProgress, BSTR aStateFilePath,
9067	IProgress **aServerProgress)
9068	{
9069	LogFlowThisFuncEnter();
9070
9071	AssertReturn (aInitiator && aName, E_INVALIDARG);
9072	AssertReturn (aStateFilePath && aServerProgress, E_POINTER);
9073
9074	LogFlowThisFunc (("aName='%ls'\n", aName));
9075
9076	AutoCaller autoCaller (this);
9077	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9078
9079	/* saveSettings() needs mParent lock */
9080	AutoMultiWriteLock2 alock (mParent, this);
9081
9082	AssertReturn ((!Global::IsOnlineOrTransient (mData->mMachineState) \|\|
9083	mData->mMachineState == MachineState_Paused) &&
9084	mSnapshotData.mLastState == MachineState_Null &&
9085	mSnapshotData.mSnapshot.isNull() &&
9086	mSnapshotData.mServerProgress.isNull() &&
9087	mSnapshotData.mCombinedProgress.isNull(),
9088	E_FAIL);
9089
9090	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
9091
9092	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
9093	{
9094	/* save all current settings to ensure current changes are committed and
9095	* hard disks are fixed up */
9096	HRESULT rc = saveSettings();
9097	CheckComRCReturnRC (rc);
9098	}
9099
9100	/// @todo NEWMEDIA so far, we decided to allow for Writhethrough hard disks
9101	/// when taking snapshots putting all the responsibility to the user...
9102	#if 0
9103	/* check that there are no Writethrough hard disks attached */
9104	for (HDData::AttachmentList::const_iterator
9105	it = mHDData->mAttachments.begin();
9106	it != mHDData->mAttachments.end();
9107	++ it)
9108	{
9109	ComObjPtr <HardDisk> hd = (*it)->hardDisk();
9110	AutoReadLock hdLock (hd);
9111	if (hd->type() == HardDiskType_Writethrough)
9112	return setError (E_FAIL,
9113	tr ("Cannot take a snapshot because the Writethrough hard disk "
9114	"'%ls' is attached to this virtual machine"),
9115	hd->locationFull().raw());
9116	}
9117	#endif
9118
9119	AssertReturn (aProgress \|\| !takingSnapshotOnline, E_FAIL);
9120
9121	/* create an ID for the snapshot */
9122	Guid snapshotId;
9123	snapshotId.create();
9124
9125	Bstr stateFilePath;
9126	/* stateFilePath is null when the machine is not online nor saved */
9127	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
9128	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
9129	mUserData->mSnapshotFolderFull.raw(),
9130	RTPATH_DELIMITER,
9131	snapshotId.ptr());
9132
9133	/* ensure the directory for the saved state file exists */
9134	if (stateFilePath)
9135	{
9136	HRESULT rc = VirtualBox::ensureFilePathExists (Utf8Str (stateFilePath));
9137	CheckComRCReturnRC (rc);
9138	}
9139
9140	/* create a snapshot machine object */
9141	ComObjPtr <SnapshotMachine> snapshotMachine;
9142	snapshotMachine.createObject();
9143	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
9144	AssertComRCReturn (rc, rc);
9145
9146	Bstr progressDesc = BstrFmt (tr ("Taking snapshot of virtual machine '%ls'"),
9147	mUserData->mName.raw());
9148	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
9149
9150	/* create a server-side progress object (it will be descriptionless when we
9151	* need to combine it with the VM-side progress, i.e. when we're taking a
9152	* snapshot online). The number of operations is: 1 (preparing) + # of
9153	* hard disks + 1 (if the state is saved so we need to copy it)
9154	*/
9155	ComObjPtr <Progress> serverProgress;
9156	serverProgress.createObject();
9157	{
9158	ULONG opCount = 1 + (ULONG)mHDData->mAttachments.size();
9159	if (mData->mMachineState == MachineState_Saved)
9160	opCount ++;
9161	if (takingSnapshotOnline)
9162	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
9163	else
9164	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
9165	opCount, firstOpDesc);
9166	AssertComRCReturn (rc, rc);
9167	}
9168
9169	/* create a combined server-side progress object when necessary */
9170	ComObjPtr <CombinedProgress> combinedProgress;
9171	if (takingSnapshotOnline)
9172	{
9173	combinedProgress.createObject();
9174	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
9175	serverProgress, aProgress);
9176	AssertComRCReturn (rc, rc);
9177	}
9178
9179	/* create a snapshot object */
9180	RTTIMESPEC time;
9181	ComObjPtr <Snapshot> snapshot;
9182	snapshot.createObject();
9183	rc = snapshot->init (snapshotId, aName, aDescription,
9184	*RTTimeNow (&time), snapshotMachine,
9185	mData->mCurrentSnapshot);
9186	AssertComRCReturnRC (rc);
9187
9188	/* create and start the task on a separate thread (note that it will not
9189	* start working until we release alock) */
9190	TakeSnapshotTask *task = new TakeSnapshotTask (this);
9191	int vrc = RTThreadCreate (NULL, taskHandler,
9192	(void *) task,
9193	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
9194	if (RT_FAILURE (vrc))
9195	{
9196	snapshot->uninit();
9197	delete task;
9198	ComAssertRCRet (vrc, E_FAIL);
9199	}
9200
9201	/* fill in the snapshot data */
9202	mSnapshotData.mLastState = mData->mMachineState;
9203	mSnapshotData.mSnapshot = snapshot;
9204	mSnapshotData.mServerProgress = serverProgress;
9205	mSnapshotData.mCombinedProgress = combinedProgress;
9206
9207	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
9208	setMachineState (MachineState_Saving);
9209
9210	if (takingSnapshotOnline)
9211	stateFilePath.cloneTo (aStateFilePath);
9212	else
9213	*aStateFilePath = NULL;
9214
9215	serverProgress.queryInterfaceTo (aServerProgress);
9216
9217	LogFlowThisFuncLeave();
9218	return S_OK;
9219	}
9220
9221	/**
9222	* @note Locks this object for writing.
9223	*/
9224	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
9225	{
9226	LogFlowThisFunc (("\n"));
9227
9228	AutoCaller autoCaller (this);
9229	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9230
9231	AutoWriteLock alock (this);
9232
9233	AssertReturn (!aSuccess \|\|
9234	(mData->mMachineState == MachineState_Saving &&
9235	mSnapshotData.mLastState != MachineState_Null &&
9236	!mSnapshotData.mSnapshot.isNull() &&
9237	!mSnapshotData.mServerProgress.isNull() &&
9238	!mSnapshotData.mCombinedProgress.isNull()),
9239	E_FAIL);
9240
9241	/* set the state to the state we had when BeginTakingSnapshot() was called
9242	* (this is expected by Console::TakeSnapshot() and
9243	* Console::saveStateThread()) */
9244	setMachineState (mSnapshotData.mLastState);
9245
9246	return endTakingSnapshot (aSuccess);
9247	}
9248
9249	/**
9250	* @note Locks mParent + this + children objects for writing!
9251	*/
9252	STDMETHODIMP SessionMachine::DiscardSnapshot (
9253	IConsole *aInitiator, IN_BSTR aId,
9254	MachineState_T aMachineState, IProgress *aProgress)
9255	{
9256	LogFlowThisFunc (("\n"));
9257
9258	Guid id(aId);
9259	AssertReturn (aInitiator && !id.isEmpty(), E_INVALIDARG);
9260	AssertReturn (aMachineState && aProgress, E_POINTER);
9261
9262	AutoCaller autoCaller (this);
9263	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9264
9265	/* saveSettings() needs mParent lock */
9266	AutoMultiWriteLock2 alock (mParent, this);
9267
9268	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9269
9270	ComObjPtr <Snapshot> snapshot;
9271	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
9272	CheckComRCReturnRC (rc);
9273
9274	AutoWriteLock snapshotLock (snapshot);
9275
9276	{
9277	AutoWriteLock chLock (snapshot->childrenLock());
9278	size_t childrenCount = snapshot->children().size();
9279	if (childrenCount > 1)
9280	return setError (VBOX_E_INVALID_OBJECT_STATE,
9281	tr ("Snapshot '%ls' of the machine '%ls' has more than one "
9282	"child snapshot (%d)"),
9283	snapshot->data().mName.raw(), mUserData->mName.raw(),
9284	childrenCount);
9285	}
9286
9287	/* If the snapshot being discarded is the current one, ensure current
9288	* settings are committed and saved.
9289	*/
9290	if (snapshot == mData->mCurrentSnapshot)
9291	{
9292	if (isModified())
9293	{
9294	rc = saveSettings();
9295	CheckComRCReturnRC (rc);
9296	}
9297	}
9298
9299	/* create a progress object. The number of operations is:
9300	* 1 (preparing) + # of hard disks + 1 if the snapshot is online
9301	*/
9302	ComObjPtr <Progress> progress;
9303	progress.createObject();
9304	rc = progress->init (mParent, aInitiator,
9305	Bstr (Utf8StrFmt (tr ("Discarding snapshot '%ls'"),
9306	snapshot->data().mName.raw())),
9307	FALSE /* aCancelable */,
9308	1 + (ULONG)snapshot->data().mMachine->mHDData->mAttachments.size() +
9309	(snapshot->stateFilePath().isNull() ? 0 : 1),
9310	Bstr (tr ("Preparing to discard snapshot")));
9311	AssertComRCReturn (rc, rc);
9312
9313	/* create and start the task on a separate thread */
9314	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
9315	int vrc = RTThreadCreate (NULL, taskHandler,
9316	(void *) task,
9317	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
9318	if (RT_FAILURE (vrc))
9319	delete task;
9320	ComAssertRCRet (vrc, E_FAIL);
9321
9322	/* set the proper machine state (note: after creating a Task instance) */
9323	setMachineState (MachineState_Discarding);
9324
9325	/* return the progress to the caller */
9326	progress.queryInterfaceTo (aProgress);
9327
9328	/* return the new state to the caller */
9329	*aMachineState = mData->mMachineState;
9330
9331	return S_OK;
9332	}
9333
9334	/**
9335	* @note Locks this + children objects for writing!
9336	*/
9337	STDMETHODIMP SessionMachine::DiscardCurrentState (
9338	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9339	{
9340	LogFlowThisFunc (("\n"));
9341
9342	AssertReturn (aInitiator, E_INVALIDARG);
9343	AssertReturn (aMachineState && aProgress, E_POINTER);
9344
9345	AutoCaller autoCaller (this);
9346	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9347
9348	AutoWriteLock alock (this);
9349
9350	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9351
9352	if (mData->mCurrentSnapshot.isNull())
9353	return setError (VBOX_E_INVALID_OBJECT_STATE,
9354	tr ("Could not discard the current state of the machine '%ls' "
9355	"because it doesn't have any snapshots"),
9356	mUserData->mName.raw());
9357
9358	/* create a progress object. The number of operations is: 1 (preparing) + #
9359	* of hard disks + 1 (if we need to copy the saved state file) */
9360	ComObjPtr <Progress> progress;
9361	progress.createObject();
9362	{
9363	ULONG opCount = 1 + (ULONG)mData->mCurrentSnapshot->data()
9364	.mMachine->mHDData->mAttachments.size();
9365	if (mData->mCurrentSnapshot->stateFilePath())
9366	++ opCount;
9367	progress->init (mParent, aInitiator,
9368	Bstr (tr ("Discarding current machine state")),
9369	FALSE /* aCancelable */, opCount,
9370	Bstr (tr ("Preparing to discard current state")));
9371	}
9372
9373	/* create and start the task on a separate thread (note that it will not
9374	* start working until we release alock) */
9375	DiscardCurrentStateTask *task =
9376	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
9377	int vrc = RTThreadCreate (NULL, taskHandler,
9378	(void *) task,
9379	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
9380	if (RT_FAILURE (vrc))
9381	{
9382	delete task;
9383	ComAssertRCRet (vrc, E_FAIL);
9384	}
9385
9386	/* set the proper machine state (note: after creating a Task instance) */
9387	setMachineState (MachineState_Discarding);
9388
9389	/* return the progress to the caller */
9390	progress.queryInterfaceTo (aProgress);
9391
9392	/* return the new state to the caller */
9393	*aMachineState = mData->mMachineState;
9394
9395	return S_OK;
9396	}
9397
9398	/**
9399	* @note Locks thos object for writing!
9400	*/
9401	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState (
9402	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9403	{
9404	LogFlowThisFunc (("\n"));
9405
9406	AssertReturn (aInitiator, E_INVALIDARG);
9407	AssertReturn (aMachineState && aProgress, E_POINTER);
9408
9409	AutoCaller autoCaller (this);
9410	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9411
9412	AutoWriteLock alock (this);
9413
9414	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9415
9416	if (mData->mCurrentSnapshot.isNull())
9417	return setError (VBOX_E_INVALID_OBJECT_STATE,
9418	tr ("Could not discard the current state of the machine '%ls' "
9419	"because it doesn't have any snapshots"),
9420	mUserData->mName.raw());
9421
9422	/* create a progress object. The number of operations is:
9423	* 1 (preparing) + # of hard disks in the current snapshot +
9424	* # of hard disks in the previous snapshot +
9425	* 1 if we need to copy the saved state file of the previous snapshot +
9426	* 1 if the current snapshot is online
9427	* or (if there is no previous snapshot):
9428	* 1 (preparing) + # of hard disks in the current snapshot * 2 +
9429	* 1 if we need to copy the saved state file of the current snapshot * 2
9430	*/
9431	ComObjPtr <Progress> progress;
9432	progress.createObject();
9433	{
9434	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
9435	ComObjPtr <Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
9436
9437	ULONG opCount = 1;
9438	if (prevSnapshot)
9439	{
9440	opCount += (ULONG)curSnapshot->data().mMachine->mHDData->mAttachments.size();
9441	opCount += (ULONG)prevSnapshot->data().mMachine->mHDData->mAttachments.size();
9442	if (prevSnapshot->stateFilePath())
9443	++ opCount;
9444	if (curSnapshot->stateFilePath())
9445	++ opCount;
9446	}
9447	else
9448	{
9449	opCount +=
9450	(ULONG)curSnapshot->data().mMachine->mHDData->mAttachments.size() * 2;
9451	if (curSnapshot->stateFilePath())
9452	opCount += 2;
9453	}
9454
9455	progress->init (mParent, aInitiator,
9456	Bstr (tr ("Discarding current machine snapshot and state")),
9457	FALSE /* aCancelable */, opCount,
9458	Bstr (tr ("Preparing to discard current snapshot and state")));
9459	}
9460
9461	/* create and start the task on a separate thread */
9462	DiscardCurrentStateTask *task =
9463	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
9464	int vrc = RTThreadCreate (NULL, taskHandler,
9465	(void *) task,
9466	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurStSnp");
9467	if (RT_FAILURE (vrc))
9468	{
9469	delete task;
9470	ComAssertRCRet (vrc, E_FAIL);
9471	}
9472
9473	/* set the proper machine state (note: after creating a Task instance) */
9474	setMachineState (MachineState_Discarding);
9475
9476	/* return the progress to the caller */
9477	progress.queryInterfaceTo (aProgress);
9478
9479	/* return the new state to the caller */
9480	*aMachineState = mData->mMachineState;
9481
9482	return S_OK;
9483	}
9484
9485	STDMETHODIMP SessionMachine::
9486	PullGuestProperties (ComSafeArrayOut (BSTR, aNames),
9487	ComSafeArrayOut (BSTR, aValues),
9488	ComSafeArrayOut (ULONG64, aTimestamps),
9489	ComSafeArrayOut (BSTR, aFlags))
9490	{
9491	LogFlowThisFunc (("\n"));
9492
9493	#ifdef VBOX_WITH_GUEST_PROPS
9494	using namespace guestProp;
9495
9496	AutoCaller autoCaller (this);
9497	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9498
9499	AutoReadLock alock (this);
9500
9501	AssertReturn (!ComSafeArrayOutIsNull (aNames), E_POINTER);
9502	AssertReturn (!ComSafeArrayOutIsNull (aValues), E_POINTER);
9503	AssertReturn (!ComSafeArrayOutIsNull (aTimestamps), E_POINTER);
9504	AssertReturn (!ComSafeArrayOutIsNull (aFlags), E_POINTER);
9505
9506	size_t cEntries = mHWData->mGuestProperties.size();
9507	com::SafeArray <BSTR> names (cEntries);
9508	com::SafeArray <BSTR> values (cEntries);
9509	com::SafeArray <ULONG64> timestamps (cEntries);
9510	com::SafeArray <BSTR> flags (cEntries);
9511	unsigned i = 0;
9512	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
9513	it != mHWData->mGuestProperties.end(); ++it)
9514	{
9515	char szFlags[MAX_FLAGS_LEN + 1];
9516	it->mName.cloneTo (&names[i]);
9517	it->mValue.cloneTo (&values[i]);
9518	timestamps[i] = it->mTimestamp;
9519	writeFlags (it->mFlags, szFlags);
9520	Bstr (szFlags).cloneTo (&flags[i]);
9521	++i;
9522	}
9523	names.detachTo (ComSafeArrayOutArg (aNames));
9524	values.detachTo (ComSafeArrayOutArg (aValues));
9525	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
9526	flags.detachTo (ComSafeArrayOutArg (aFlags));
9527	mHWData->mPropertyServiceActive = true;
9528	return S_OK;
9529	#else
9530	ReturnComNotImplemented();
9531	#endif
9532	}
9533
9534	STDMETHODIMP SessionMachine::PushGuestProperties (ComSafeArrayIn (IN_BSTR, aNames),
9535	ComSafeArrayIn (IN_BSTR, aValues),
9536	ComSafeArrayIn (ULONG64, aTimestamps),
9537	ComSafeArrayIn (IN_BSTR, aFlags))
9538	{
9539	LogFlowThisFunc (("\n"));
9540
9541	#ifdef VBOX_WITH_GUEST_PROPS
9542	using namespace guestProp;
9543
9544	AutoCaller autoCaller (this);
9545	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9546
9547	AutoWriteLock alock (this);
9548
9549	/* Temporarily reset the registered flag, so that our machine state
9550	* changes (i.e. mHWData.backup()) succeed. (isMutable() used in
9551	* all setters will return FALSE for a Machine instance if mRegistered
9552	* is TRUE). This is copied from registeredInit(), and may or may not be
9553	* the right way to handle this. */
9554	mData->mRegistered = FALSE;
9555	HRESULT rc = checkStateDependency (MutableStateDep);
9556	LogRel (("checkStateDependency (MutableStateDep) returned 0x%x\n", rc));
9557	CheckComRCReturnRC (rc);
9558
9559	// ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9560
9561	AssertReturn (!ComSafeArrayInIsNull (aNames), E_POINTER);
9562	AssertReturn (!ComSafeArrayInIsNull (aValues), E_POINTER);
9563	AssertReturn (!ComSafeArrayInIsNull (aTimestamps), E_POINTER);
9564	AssertReturn (!ComSafeArrayInIsNull (aFlags), E_POINTER);
9565
9566	com::SafeArray <IN_BSTR> names (ComSafeArrayInArg (aNames));
9567	com::SafeArray <IN_BSTR> values (ComSafeArrayInArg (aValues));
9568	com::SafeArray <ULONG64> timestamps (ComSafeArrayInArg (aTimestamps));
9569	com::SafeArray <IN_BSTR> flags (ComSafeArrayInArg (aFlags));
9570	DiscardSettings();
9571	mHWData.backup();
9572	mHWData->mGuestProperties.erase (mHWData->mGuestProperties.begin(),
9573	mHWData->mGuestProperties.end());
9574	for (unsigned i = 0; i < names.size(); ++i)
9575	{
9576	uint32_t fFlags = NILFLAG;
9577	validateFlags (Utf8Str (flags[i]).raw(), &fFlags);
9578	HWData::GuestProperty property = { names[i], values[i], timestamps[i], fFlags };
9579	mHWData->mGuestProperties.push_back (property);
9580	}
9581	mHWData->mPropertyServiceActive = false;
9582	alock.unlock();
9583	SaveSettings();
9584	/* Restore the mRegistered flag. */
9585	mData->mRegistered = TRUE;
9586	return S_OK;
9587	#else
9588	ReturnComNotImplemented();
9589	#endif
9590	}
9591
9592	STDMETHODIMP SessionMachine::PushGuestProperty (IN_BSTR aName, IN_BSTR aValue,
9593	ULONG64 aTimestamp, IN_BSTR aFlags)
9594	{
9595	LogFlowThisFunc (("\n"));
9596
9597	#ifdef VBOX_WITH_GUEST_PROPS
9598	using namespace guestProp;
9599
9600	CheckComArgNotNull (aName);
9601	if ((aValue != NULL) && (!VALID_PTR (aValue) \|\| !VALID_PTR (aFlags)))
9602	return E_POINTER; /* aValue can be NULL to indicate deletion */
9603
9604	Utf8Str utf8Name (aName);
9605	Utf8Str utf8Flags (aFlags);
9606	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
9607	if ( utf8Name.isNull()
9608	\|\| ((aFlags != NULL) && utf8Flags.isNull())
9609	\|\| utf8Patterns.isNull()
9610	)
9611	return E_OUTOFMEMORY;
9612
9613	uint32_t fFlags = NILFLAG;
9614	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags)))
9615	return E_INVALIDARG;
9616
9617	bool matchAll = false;
9618	if (utf8Patterns.length() == 0)
9619	matchAll = true;
9620
9621	AutoCaller autoCaller (this);
9622	CheckComRCReturnRC (autoCaller.rc());
9623
9624	AutoWriteLock alock (this);
9625
9626	HRESULT rc = checkStateDependency (MutableStateDep);
9627	CheckComRCReturnRC (rc);
9628
9629	mHWData.backup();
9630	for (HWData::GuestPropertyList::iterator iter = mHWData->mGuestProperties.begin();
9631	iter != mHWData->mGuestProperties.end(); ++iter)
9632	if (aName == iter->mName)
9633	{
9634	mHWData->mGuestProperties.erase (iter);
9635	break;
9636	}
9637	if (aValue != NULL)
9638	{
9639	HWData::GuestProperty property = { aName, aValue, aTimestamp, fFlags };
9640	mHWData->mGuestProperties.push_back (property);
9641	}
9642
9643	/* send a callback notification if appropriate */
9644	alock.leave();
9645	if ( matchAll
9646	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
9647	utf8Name.raw(), RTSTR_MAX, NULL)
9648	)
9649	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
9650
9651	return S_OK;
9652	#else
9653	ReturnComNotImplemented();
9654	#endif
9655	}
9656
9657	// public methods only for internal purposes
9658	/////////////////////////////////////////////////////////////////////////////
9659
9660	/**
9661	* Called from the client watcher thread to check for expected or unexpected
9662	* death of the client process that has a direct session to this machine.
9663	*
9664	* On Win32 and on OS/2, this method is called only when we've got the
9665	* mutex (i.e. the client has either died or terminated normally) so it always
9666	* returns @c true (the client is terminated, the session machine is
9667	* uninitialized).
9668	*
9669	* On other platforms, the method returns @c true if the client process has
9670	* terminated normally or abnormally and the session machine was uninitialized,
9671	* and @c false if the client process is still alive.
9672	*
9673	* @note Locks this object for writing.
9674	*/
9675	bool SessionMachine::checkForDeath()
9676	{
9677	Uninit::Reason reason;
9678	bool terminated = false;
9679
9680	/* Enclose autoCaller with a block because calling uninit() from under it
9681	* will deadlock. */
9682	{
9683	AutoCaller autoCaller (this);
9684	if (!autoCaller.isOk())
9685	{
9686	/* return true if not ready, to cause the client watcher to exclude
9687	* the corresponding session from watching */
9688	LogFlowThisFunc (("Already uninitialized!"));
9689	return true;
9690	}
9691
9692	AutoWriteLock alock (this);
9693
9694	/* Determine the reason of death: if the session state is Closing here,
9695	* everything is fine. Otherwise it means that the client did not call
9696	* OnSessionEnd() before it released the IPC semaphore. This may happen
9697	* either because the client process has abnormally terminated, or
9698	* because it simply forgot to call ISession::Close() before exiting. We
9699	* threat the latter also as an abnormal termination (see
9700	* Session::uninit() for details). */
9701	reason = mData->mSession.mState == SessionState_Closing ?
9702	Uninit::Normal :
9703	Uninit::Abnormal;
9704
9705	#if defined(RT_OS_WINDOWS)
9706
9707	AssertMsg (mIPCSem, ("semaphore must be created"));
9708
9709	/* release the IPC mutex */
9710	::ReleaseMutex (mIPCSem);
9711
9712	terminated = true;
9713
9714	#elif defined(RT_OS_OS2)
9715
9716	AssertMsg (mIPCSem, ("semaphore must be created"));
9717
9718	/* release the IPC mutex */
9719	::DosReleaseMutexSem (mIPCSem);
9720
9721	terminated = true;
9722
9723	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
9724
9725	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
9726
9727	int val = ::semctl (mIPCSem, 0, GETVAL);
9728	if (val > 0)
9729	{
9730	/* the semaphore is signaled, meaning the session is terminated */
9731	terminated = true;
9732	}
9733
9734	#else
9735	# error "Port me!"
9736	#endif
9737
9738	} /* AutoCaller block */
9739
9740	if (terminated)
9741	uninit (reason);
9742
9743	return terminated;
9744	}
9745
9746	/**
9747	* @note Locks this object for reading.
9748	*/
9749	HRESULT SessionMachine::onDVDDriveChange()
9750	{
9751	LogFlowThisFunc (("\n"));
9752
9753	AutoCaller autoCaller (this);
9754	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9755
9756	ComPtr <IInternalSessionControl> directControl;
9757	{
9758	AutoReadLock alock (this);
9759	directControl = mData->mSession.mDirectControl;
9760	}
9761
9762	/* ignore notifications sent after #OnSessionEnd() is called */
9763	if (!directControl)
9764	return S_OK;
9765
9766	return directControl->OnDVDDriveChange();
9767	}
9768
9769	/**
9770	* @note Locks this object for reading.
9771	*/
9772	HRESULT SessionMachine::onFloppyDriveChange()
9773	{
9774	LogFlowThisFunc (("\n"));
9775
9776	AutoCaller autoCaller (this);
9777	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9778
9779	ComPtr <IInternalSessionControl> directControl;
9780	{
9781	AutoReadLock alock (this);
9782	directControl = mData->mSession.mDirectControl;
9783	}
9784
9785	/* ignore notifications sent after #OnSessionEnd() is called */
9786	if (!directControl)
9787	return S_OK;
9788
9789	return directControl->OnFloppyDriveChange();
9790	}
9791
9792	/**
9793	* @note Locks this object for reading.
9794	*/
9795	HRESULT SessionMachine::onNetworkAdapterChange (INetworkAdapter *networkAdapter)
9796	{
9797	LogFlowThisFunc (("\n"));
9798
9799	AutoCaller autoCaller (this);
9800	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9801
9802	ComPtr <IInternalSessionControl> directControl;
9803	{
9804	AutoReadLock alock (this);
9805	directControl = mData->mSession.mDirectControl;
9806	}
9807
9808	/* ignore notifications sent after #OnSessionEnd() is called */
9809	if (!directControl)
9810	return S_OK;
9811
9812	return directControl->OnNetworkAdapterChange (networkAdapter);
9813	}
9814
9815	/**
9816	* @note Locks this object for reading.
9817	*/
9818	HRESULT SessionMachine::onSerialPortChange (ISerialPort *serialPort)
9819	{
9820	LogFlowThisFunc (("\n"));
9821
9822	AutoCaller autoCaller (this);
9823	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9824
9825	ComPtr <IInternalSessionControl> directControl;
9826	{
9827	AutoReadLock alock (this);
9828	directControl = mData->mSession.mDirectControl;
9829	}
9830
9831	/* ignore notifications sent after #OnSessionEnd() is called */
9832	if (!directControl)
9833	return S_OK;
9834
9835	return directControl->OnSerialPortChange (serialPort);
9836	}
9837
9838	/**
9839	* @note Locks this object for reading.
9840	*/
9841	HRESULT SessionMachine::onParallelPortChange (IParallelPort *parallelPort)
9842	{
9843	LogFlowThisFunc (("\n"));
9844
9845	AutoCaller autoCaller (this);
9846	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9847
9848	ComPtr <IInternalSessionControl> directControl;
9849	{
9850	AutoReadLock alock (this);
9851	directControl = mData->mSession.mDirectControl;
9852	}
9853
9854	/* ignore notifications sent after #OnSessionEnd() is called */
9855	if (!directControl)
9856	return S_OK;
9857
9858	return directControl->OnParallelPortChange (parallelPort);
9859	}
9860
9861	/**
9862	* @note Locks this object for reading.
9863	*/
9864	HRESULT SessionMachine::onStorageControllerChange ()
9865	{
9866	LogFlowThisFunc (("\n"));
9867
9868	AutoCaller autoCaller (this);
9869	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9870
9871	ComPtr <IInternalSessionControl> directControl;
9872	{
9873	AutoReadLock alock (this);
9874	directControl = mData->mSession.mDirectControl;
9875	}
9876
9877	/* ignore notifications sent after #OnSessionEnd() is called */
9878	if (!directControl)
9879	return S_OK;
9880
9881	return directControl->OnStorageControllerChange ();
9882	}
9883
9884	/**
9885	* @note Locks this object for reading.
9886	*/
9887	HRESULT SessionMachine::onVRDPServerChange()
9888	{
9889	LogFlowThisFunc (("\n"));
9890
9891	AutoCaller autoCaller (this);
9892	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9893
9894	ComPtr <IInternalSessionControl> directControl;
9895	{
9896	AutoReadLock alock (this);
9897	directControl = mData->mSession.mDirectControl;
9898	}
9899
9900	/* ignore notifications sent after #OnSessionEnd() is called */
9901	if (!directControl)
9902	return S_OK;
9903
9904	return directControl->OnVRDPServerChange();
9905	}
9906
9907	/**
9908	* @note Locks this object for reading.
9909	*/
9910	HRESULT SessionMachine::onUSBControllerChange()
9911	{
9912	LogFlowThisFunc (("\n"));
9913
9914	AutoCaller autoCaller (this);
9915	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9916
9917	ComPtr <IInternalSessionControl> directControl;
9918	{
9919	AutoReadLock alock (this);
9920	directControl = mData->mSession.mDirectControl;
9921	}
9922
9923	/* ignore notifications sent after #OnSessionEnd() is called */
9924	if (!directControl)
9925	return S_OK;
9926
9927	return directControl->OnUSBControllerChange();
9928	}
9929
9930	/**
9931	* @note Locks this object for reading.
9932	*/
9933	HRESULT SessionMachine::onSharedFolderChange()
9934	{
9935	LogFlowThisFunc (("\n"));
9936
9937	AutoCaller autoCaller (this);
9938	AssertComRCReturnRC (autoCaller.rc());
9939
9940	ComPtr <IInternalSessionControl> directControl;
9941	{
9942	AutoReadLock alock (this);
9943	directControl = mData->mSession.mDirectControl;
9944	}
9945
9946	/* ignore notifications sent after #OnSessionEnd() is called */
9947	if (!directControl)
9948	return S_OK;
9949
9950	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
9951	}
9952
9953	/**
9954	* Returns @c true if this machine's USB controller reports it has a matching
9955	* filter for the given USB device and @c false otherwise.
9956	*
9957	* @note Locks this object for reading.
9958	*/
9959	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr <HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
9960	{
9961	AutoCaller autoCaller (this);
9962	/* silently return if not ready -- this method may be called after the
9963	* direct machine session has been called */
9964	if (!autoCaller.isOk())
9965	return false;
9966
9967	AutoReadLock alock (this);
9968
9969	#ifdef VBOX_WITH_USB
9970	switch (mData->mMachineState)
9971	{
9972	case MachineState_Starting:
9973	case MachineState_Restoring:
9974	case MachineState_Paused:
9975	case MachineState_Running:
9976	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
9977	default: break;
9978	}
9979	#else
9980	NOREF(aDevice);
9981	NOREF(aMaskedIfs);
9982	#endif
9983	return false;
9984	}
9985
9986	/**
9987	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9988	*/
9989	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
9990	IVirtualBoxErrorInfo *aError,
9991	ULONG aMaskedIfs)
9992	{
9993	LogFlowThisFunc (("\n"));
9994
9995	AutoCaller autoCaller (this);
9996
9997	/* This notification may happen after the machine object has been
9998	* uninitialized (the session was closed), so don't assert. */
9999	CheckComRCReturnRC (autoCaller.rc());
10000
10001	ComPtr <IInternalSessionControl> directControl;
10002	{
10003	AutoReadLock alock (this);
10004	directControl = mData->mSession.mDirectControl;
10005	}
10006
10007	/* fail on notifications sent after #OnSessionEnd() is called, it is
10008	* expected by the caller */
10009	if (!directControl)
10010	return E_FAIL;
10011
10012	/* No locks should be held at this point. */
10013	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
10014	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
10015
10016	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
10017	}
10018
10019	/**
10020	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
10021	*/
10022	HRESULT SessionMachine::onUSBDeviceDetach (IN_BSTR aId,
10023	IVirtualBoxErrorInfo *aError)
10024	{
10025	LogFlowThisFunc (("\n"));
10026
10027	AutoCaller autoCaller (this);
10028
10029	/* This notification may happen after the machine object has been
10030	* uninitialized (the session was closed), so don't assert. */
10031	CheckComRCReturnRC (autoCaller.rc());
10032
10033	ComPtr <IInternalSessionControl> directControl;
10034	{
10035	AutoReadLock alock (this);
10036	directControl = mData->mSession.mDirectControl;
10037	}
10038
10039	/* fail on notifications sent after #OnSessionEnd() is called, it is
10040	* expected by the caller */
10041	if (!directControl)
10042	return E_FAIL;
10043
10044	/* No locks should be held at this point. */
10045	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
10046	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
10047
10048	return directControl->OnUSBDeviceDetach (aId, aError);
10049	}
10050
10051	// protected methods
10052	/////////////////////////////////////////////////////////////////////////////
10053
10054	/**
10055	* Helper method to finalize saving the state.
10056	*
10057	* @note Must be called from under this object's lock.
10058	*
10059	* @param aSuccess TRUE if the snapshot has been taken successfully
10060	*
10061	* @note Locks mParent + this objects for writing.
10062	*/
10063	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
10064	{
10065	LogFlowThisFuncEnter();
10066
10067	AutoCaller autoCaller (this);
10068	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10069
10070	/* saveSettings() needs mParent lock */
10071	AutoMultiWriteLock2 alock (mParent, this);
10072
10073	HRESULT rc = S_OK;
10074
10075	if (aSuccess)
10076	{
10077	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
10078
10079	/* save all VM settings */
10080	rc = saveSettings();
10081	}
10082	else
10083	{
10084	/* delete the saved state file (it might have been already created) */
10085	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
10086	}
10087
10088	/* remove the completed progress object */
10089	mParent->removeProgress (mSnapshotData.mProgressId);
10090
10091	/* clear out the temporary saved state data */
10092	mSnapshotData.mLastState = MachineState_Null;
10093	mSnapshotData.mProgressId.clear();
10094	mSnapshotData.mStateFilePath.setNull();
10095
10096	LogFlowThisFuncLeave();
10097	return rc;
10098	}
10099
10100	/**
10101	* Helper method to finalize taking a snapshot. Gets called to finalize the
10102	* "take snapshot" procedure.
10103	*
10104	* Expected to be called after completing all the tasks related to taking the
10105	* snapshot, either successfully or unsuccessfilly.
10106	*
10107	* @param aSuccess TRUE if the snapshot has been taken successfully.
10108	*
10109	* @note Locks this objects for writing.
10110	*/
10111	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
10112	{
10113	LogFlowThisFuncEnter();
10114
10115	AutoCaller autoCaller (this);
10116	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10117
10118	AutoWriteLock alock (this);
10119
10120	AssertReturn (!mSnapshotData.mSnapshot.isNull(), E_FAIL);
10121
10122	MultiResult rc (S_OK);
10123
10124	if (aSuccess)
10125	{
10126	/* the server progress must be completed on success */
10127	Assert (mSnapshotData.mServerProgress->completed());
10128
10129	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
10130
10131	/* memorize the first snapshot if necessary */
10132	if (!mData->mFirstSnapshot)
10133	mData->mFirstSnapshot = mData->mCurrentSnapshot;
10134
10135	int opFlags = SaveSS_AddOp \| SaveSS_CurrentId;
10136	if (!Global::IsOnline (mSnapshotData.mLastState))
10137	{
10138	/* the machine was powered off or saved when taking a snapshot, so
10139	* reset the mCurrentStateModified flag */
10140	mData->mCurrentStateModified = FALSE;
10141	opFlags \|= SaveSS_CurStateModified;
10142	}
10143
10144	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
10145	}
10146
10147	if (aSuccess && SUCCEEDED (rc))
10148	{
10149	bool online = Global::IsOnline (mSnapshotData.mLastState);
10150
10151	/* associate old hard disks with the snapshot and do locking/unlocking*/
10152	fixupHardDisks(true /* aCommit */, online);
10153
10154	/* inform callbacks */
10155	mParent->onSnapshotTaken (mData->mUuid,
10156	mSnapshotData.mSnapshot->data().mId);
10157	}
10158	else
10159	{
10160	/* wait for the completion of the server progress (diff VDI creation) */
10161	/// @todo (dmik) later, we will definitely want to cancel it instead
10162	// (when the cancel function is implemented)
10163	mSnapshotData.mServerProgress->WaitForCompletion (-1);
10164
10165	/* delete all differencing hard disks created (this will also attach
10166	* their parents back by rolling back mHDData) */
10167	fixupHardDisks(false /* aCommit */);
10168
10169	/* delete the saved state file (it might have been already created) */
10170	if (mSnapshotData.mSnapshot->stateFilePath())
10171	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
10172
10173	mSnapshotData.mSnapshot->uninit();
10174	}
10175
10176	/* clear out the snapshot data */
10177	mSnapshotData.mLastState = MachineState_Null;
10178	mSnapshotData.mSnapshot.setNull();
10179	mSnapshotData.mServerProgress.setNull();
10180
10181	/* uninitialize the combined progress (to remove it from the VBox collection) */
10182	if (!mSnapshotData.mCombinedProgress.isNull())
10183	{
10184	mSnapshotData.mCombinedProgress->uninit();
10185	mSnapshotData.mCombinedProgress.setNull();
10186	}
10187
10188	LogFlowThisFuncLeave();
10189	return rc;
10190	}
10191
10192	/**
10193	* Take snapshot task handler. Must be called only by
10194	* TakeSnapshotTask::handler()!
10195	*
10196	* The sole purpose of this task is to asynchronously create differencing VDIs
10197	* and copy the saved state file (when necessary). The VM process will wait for
10198	* this task to complete using the mSnapshotData.mServerProgress returned to it.
10199	*
10200	* @note Locks this object for writing.
10201	*/
10202	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask & /* aTask */)
10203	{
10204	LogFlowThisFuncEnter();
10205
10206	AutoCaller autoCaller (this);
10207
10208	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10209	if (!autoCaller.isOk())
10210	{
10211	/* we might have been uninitialized because the session was accidentally
10212	* closed by the client, so don't assert */
10213	LogFlowThisFuncLeave();
10214	return;
10215	}
10216
10217	AutoWriteLock alock (this);
10218
10219	HRESULT rc = S_OK;
10220
10221	bool online = Global::IsOnline (mSnapshotData.mLastState);
10222
10223	LogFlowThisFunc (("Creating differencing hard disks (online=%d)...\n",
10224	online));
10225
10226	mHDData.backup();
10227
10228	/* create new differencing hard disks and attach them to this machine */
10229	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10230	mSnapshotData.mServerProgress,
10231	online);
10232
10233	if (SUCCEEDED (rc) && mSnapshotData.mLastState == MachineState_Saved)
10234	{
10235	Utf8Str stateFrom = mSSData->mStateFilePath;
10236	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
10237
10238	LogFlowThisFunc (("Copying the execution state from '%s' to '%s'...\n",
10239	stateFrom.raw(), stateTo.raw()));
10240
10241	mSnapshotData.mServerProgress->setNextOperation(Bstr(tr("Copying the execution state")),
10242	1); // weight
10243
10244	/* Leave the lock before a lengthy operation (mMachineState is
10245	* MachineState_Saving here) */
10246
10247	alock.leave();
10248
10249	/* copy the state file */
10250	int vrc = RTFileCopyEx (stateFrom, stateTo, 0, progressCallback,
10251	static_cast <Progress *> (mSnapshotData.mServerProgress));
10252
10253	alock.enter();
10254
10255	if (RT_FAILURE (vrc))
10256	rc = setError (E_FAIL,
10257	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10258	stateFrom.raw(), stateTo.raw(), vrc);
10259	}
10260
10261	/* we have to call endTakingSnapshot() ourselves if the snapshot was taken
10262	* offline because the VM process will not do it in this case
10263	*/
10264	if (!online)
10265	{
10266	LogFlowThisFunc (("Finalizing the taken snapshot (rc=%Rhrc)...\n", rc));
10267
10268	{
10269	ErrorInfoKeeper eik;
10270
10271	setMachineState (mSnapshotData.mLastState);
10272	updateMachineStateOnClient();
10273	}
10274
10275	/* finalize the progress after setting the state, for consistency */
10276	mSnapshotData.mServerProgress->notifyComplete (rc);
10277
10278	endTakingSnapshot (SUCCEEDED (rc));
10279	}
10280	else
10281	{
10282	mSnapshotData.mServerProgress->notifyComplete (rc);
10283	}
10284
10285	LogFlowThisFuncLeave();
10286	}
10287
10288	/**
10289	* Helper struct for SessionMachine::discardSnapshotHandler().
10290	*/
10291	struct HardDiskDiscardRec
10292	{
10293	HardDiskDiscardRec() : chain (NULL) {}
10294
10295	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10296	HardDisk::MergeChain *aChain = NULL)
10297	: hd (aHd), chain (aChain) {}
10298
10299	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10300	HardDisk::MergeChain *aChain,
10301	const ComObjPtr<HardDisk> &aReplaceHd,
10302	const ComObjPtr<HardDiskAttachment> &aReplaceHda,
10303	const Guid &aSnapshotId)
10304	: hd (aHd), chain (aChain)
10305	, replaceHd (aReplaceHd), replaceHda (aReplaceHda)
10306	, snapshotId (aSnapshotId) {}
10307
10308	ComObjPtr<HardDisk> hd;
10309	HardDisk::MergeChain *chain;
10310	/* these are for the replace hard disk case: */
10311	ComObjPtr<HardDisk> replaceHd;
10312	ComObjPtr<HardDiskAttachment> replaceHda;
10313	Guid snapshotId;
10314	};
10315
10316	typedef std::list <HardDiskDiscardRec> HardDiskDiscardRecList;
10317
10318	/**
10319	* Discard snapshot task handler. Must be called only by
10320	* DiscardSnapshotTask::handler()!
10321	*
10322	* When aTask.subTask is true, the associated progress object is left
10323	* uncompleted on success. On failure, the progress is marked as completed
10324	* regardless of this parameter.
10325	*
10326	* @note Locks mParent + this + child objects for writing!
10327	*/
10328	void SessionMachine::discardSnapshotHandler (DiscardSnapshotTask &aTask)
10329	{
10330	LogFlowThisFuncEnter();
10331
10332	AutoCaller autoCaller (this);
10333
10334	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10335	if (!autoCaller.isOk())
10336	{
10337	/* we might have been uninitialized because the session was accidentally
10338	* closed by the client, so don't assert */
10339	aTask.progress->notifyComplete (
10340	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10341	tr ("The session has been accidentally closed"));
10342
10343	LogFlowThisFuncLeave();
10344	return;
10345	}
10346
10347	/* saveSettings() needs mParent lock */
10348	AutoWriteLock vboxLock (mParent);
10349
10350	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10351	* provide an AutoWriteLock argument that lets create a non-locking
10352	* instance */
10353	vboxLock.unlock();
10354
10355	/* Preseve the {parent, child} lock order for this and snapshot stuff */
10356	AutoMultiWriteLock3 alock (this->lockHandle(),
10357	aTask.snapshot->lockHandle(),
10358	aTask.snapshot->childrenLock());
10359
10360	ComObjPtr <SnapshotMachine> sm = aTask.snapshot->data().mMachine;
10361	/* no need to lock the snapshot machine since it is const by definiton */
10362
10363	HRESULT rc = S_OK;
10364
10365	/* save the snapshot ID (for callbacks) */
10366	Guid snapshotId = aTask.snapshot->data().mId;
10367
10368	HardDiskDiscardRecList toDiscard;
10369
10370	bool settingsChanged = false;
10371
10372	try
10373	{
10374	/* first pass: */
10375	LogFlowThisFunc (("1: Checking hard disk merge prerequisites...\n"));
10376
10377	for (HDData::AttachmentList::const_iterator it =
10378	sm->mHDData->mAttachments.begin();
10379	it != sm->mHDData->mAttachments.end();
10380	++ it)
10381	{
10382	ComObjPtr<HardDiskAttachment> hda = *it;
10383	ComObjPtr<HardDisk> hd = hda->hardDisk();
10384
10385	/* HardDisk::prepareDiscard() reqiuires a write lock */
10386	AutoWriteLock hdLock (hd);
10387
10388	if (hd->type() != HardDiskType_Normal)
10389	{
10390	/* skip writethrough hard disks */
10391
10392	Assert (hd->type() == HardDiskType_Writethrough);
10393
10394	rc = aTask.progress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
10395	hd->root()->name().raw()),
10396	1); // weight
10397	CheckComRCThrowRC (rc);
10398
10399	continue;
10400	}
10401
10402	HardDisk::MergeChain *chain = NULL;
10403
10404	/* needs to be discarded (merged with the child if any), check
10405	* prerequisites */
10406	rc = hd->prepareDiscard (chain);
10407	CheckComRCThrowRC (rc);
10408
10409	if (hd->parent().isNull() && chain != NULL)
10410	{
10411	/* it's a base hard disk so it will be a backward merge of its
10412	* only child to it (prepareDiscard() does necessary checks). We
10413	* need then to update the attachment that refers to the child
10414	* to refer to the parent insead. Don't forget to detach the
10415	* child (otherwise mergeTo() called by discard() will assert
10416	* because it will be going to delete the child) */
10417
10418	/* The below assert would be nice but I don't want to move
10419	* HardDisk::MergeChain to the header just for that
10420	* Assert (!chain->isForward()); */
10421
10422	Assert (hd->children().size() == 1);
10423
10424	ComObjPtr<HardDisk> replaceHd = hd->children().front();
10425
10426	Assert (replaceHd->backRefs().front().machineId == mData->mUuid);
10427	Assert (replaceHd->backRefs().front().snapshotIds.size() <= 1);
10428
10429	Guid snapshotId;
10430	if (replaceHd->backRefs().front().snapshotIds.size() == 1)
10431	snapshotId = replaceHd->backRefs().front().snapshotIds.front();
10432
10433	HRESULT rc2 = S_OK;
10434
10435	/* adjust back references */
10436	rc2 = replaceHd->detachFrom (mData->mUuid, snapshotId);
10437	AssertComRC (rc2);
10438
10439	rc2 = hd->attachTo (mData->mUuid, snapshotId);
10440	AssertComRC (rc2);
10441
10442	/* replace the hard disk in the attachment object */
10443	HDData::AttachmentList::iterator it;
10444	if (snapshotId.isEmpty())
10445	{
10446	/* in current state */
10447	it = std::find_if (mHDData->mAttachments.begin(),
10448	mHDData->mAttachments.end(),
10449	HardDiskAttachment::RefersTo (replaceHd));
10450	AssertBreak (it != mHDData->mAttachments.end());
10451	}
10452	else
10453	{
10454	/* in snapshot */
10455	ComObjPtr <Snapshot> snapshot;
10456	rc2 = findSnapshot (snapshotId, snapshot);
10457	AssertComRC (rc2);
10458
10459	/* don't lock the snapshot; cannot be modified outside */
10460	HDData::AttachmentList &snapAtts =
10461	snapshot->data().mMachine->mHDData->mAttachments;
10462	it = std::find_if (snapAtts.begin(),
10463	snapAtts.end(),
10464	HardDiskAttachment::RefersTo (replaceHd));
10465	AssertBreak (it != snapAtts.end());
10466	}
10467
10468	AutoWriteLock attLock (*it);
10469	(it)->updateHardDisk (hd, false / aImplicit */);
10470
10471	toDiscard.push_back (HardDiskDiscardRec (hd, chain, replaceHd,
10472	*it, snapshotId));
10473	continue;
10474	}
10475
10476	toDiscard.push_back (HardDiskDiscardRec (hd, chain));
10477	}
10478
10479	/* Now we checked that we can successfully merge all normal hard disks
10480	* (unless a runtime error like end-of-disc happens). Prior to
10481	* performing the actual merge, we want to discard the snapshot itself
10482	* and remove it from the XML file to make sure that a possible merge
10483	* ruintime error will not make this snapshot inconsistent because of
10484	* the partially merged or corrupted hard disks */
10485
10486	/* second pass: */
10487	LogFlowThisFunc (("2: Discarding snapshot...\n"));
10488
10489	{
10490	/* for now, the snapshot must have only one child when discarded,
10491	* or no children at all */
10492	ComAssertThrow (aTask.snapshot->children().size() <= 1, E_FAIL);
10493
10494	ComObjPtr <Snapshot> parentSnapshot = aTask.snapshot->parent();
10495
10496	/// @todo (dmik):
10497	// when we introduce clones later, discarding the snapshot
10498	// will affect the current and first snapshots of clones, if they are
10499	// direct children of this snapshot. So we will need to lock machines
10500	// associated with child snapshots as well and update mCurrentSnapshot
10501	// and/or mFirstSnapshot fields.
10502
10503	if (aTask.snapshot == mData->mCurrentSnapshot)
10504	{
10505	/* currently, the parent snapshot must refer to the same machine */
10506	/// @todo NEWMEDIA not really clear why
10507	ComAssertThrow (
10508	!parentSnapshot \|\|
10509	parentSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10510	E_FAIL);
10511	mData->mCurrentSnapshot = parentSnapshot;
10512
10513	/* we've changed the base of the current state so mark it as
10514	* modified as it no longer guaranteed to be its copy */
10515	mData->mCurrentStateModified = TRUE;
10516	}
10517
10518	if (aTask.snapshot == mData->mFirstSnapshot)
10519	{
10520	if (aTask.snapshot->children().size() == 1)
10521	{
10522	ComObjPtr <Snapshot> childSnapshot =
10523	aTask.snapshot->children().front();
10524	ComAssertThrow (
10525	childSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
10526	E_FAIL);
10527	mData->mFirstSnapshot = childSnapshot;
10528	}
10529	else
10530	mData->mFirstSnapshot.setNull();
10531	}
10532
10533	Bstr stateFilePath = aTask.snapshot->stateFilePath();
10534
10535	/* Note that discarding the snapshot will deassociate it from the
10536	* hard disks which will allow the merge+delete operation for them*/
10537	aTask.snapshot->discard();
10538
10539	rc = saveSnapshotSettings (parentSnapshot, SaveSS_UpdateAllOp \|
10540	SaveSS_CurrentId \|
10541	SaveSS_CurStateModified);
10542	CheckComRCThrowRC (rc);
10543
10544	/// @todo (dmik)
10545	// if we implement some warning mechanism later, we'll have
10546	// to return a warning if the state file path cannot be deleted
10547	if (stateFilePath)
10548	{
10549	aTask.progress->setNextOperation(Bstr(tr("Discarding the execution state")),
10550	1); // weight
10551
10552	RTFileDelete (Utf8Str (stateFilePath));
10553	}
10554
10555	/// @todo NEWMEDIA to provide a good level of fauilt tolerance, we
10556	/// should restore the shapshot in the snapshot tree if
10557	/// saveSnapshotSettings fails. Actually, we may call
10558	/// #saveSnapshotSettings() with a special flag that will tell it to
10559	/// skip the given snapshot as if it would have been discarded and
10560	/// only actually discard it if the save operation succeeds.
10561	}
10562
10563	/* here we come when we've irrevesibly discarded the snapshot which
10564	* means that the VM settigns (our relevant changes to mData) need to be
10565	* saved too */
10566	/// @todo NEWMEDIA maybe save everything in one operation in place of
10567	/// saveSnapshotSettings() above
10568	settingsChanged = true;
10569
10570	/* third pass: */
10571	LogFlowThisFunc (("3: Performing actual hard disk merging...\n"));
10572
10573	/* leave the locks before the potentially lengthy operation */
10574	alock.leave();
10575
10576	/// @todo NEWMEDIA turn the following errors into warnings because the
10577	/// snapshot itself has been already deleted (and interpret these
10578	/// warnings properly on the GUI side)
10579
10580	for (HardDiskDiscardRecList::iterator it = toDiscard.begin();
10581	it != toDiscard.end();)
10582	{
10583	rc = it->hd->discard (aTask.progress, it->chain);
10584	CheckComRCBreakRC (rc);
10585
10586	/* prevent from calling cancelDiscard() */
10587	it = toDiscard.erase (it);
10588	}
10589
10590	alock.enter();
10591
10592	CheckComRCThrowRC (rc);
10593	}
10594	catch (HRESULT aRC) { rc = aRC; }
10595
10596	if FAILED (rc)
10597	{
10598	HRESULT rc2 = S_OK;
10599
10600	/* un-prepare the remaining hard disks */
10601	for (HardDiskDiscardRecList::const_iterator it = toDiscard.begin();
10602	it != toDiscard.end(); ++ it)
10603	{
10604	it->hd->cancelDiscard (it->chain);
10605
10606	if (!it->replaceHd.isNull())
10607	{
10608	/* undo hard disk replacement */
10609
10610	rc2 = it->replaceHd->attachTo (mData->mUuid, it->snapshotId);
10611	AssertComRC (rc2);
10612
10613	rc2 = it->hd->detachFrom (mData->mUuid, it->snapshotId);
10614	AssertComRC (rc2);
10615
10616	AutoWriteLock attLock (it->replaceHda);
10617	it->replaceHda->updateHardDisk (it->replaceHd, false /* aImplicit */);
10618	}
10619	}
10620	}
10621
10622	if (!aTask.subTask \|\| FAILED (rc))
10623	{
10624	if (!aTask.subTask)
10625	{
10626	/* saveSettings() below needs a VirtualBox write lock and we need to
10627	* leave this object's lock to do this to follow the {parent-child}
10628	* locking rule. This is the last chance to do that while we are
10629	* still in a protective state which allows us to temporarily leave
10630	* the lock */
10631	alock.unlock();
10632	vboxLock.lock();
10633	alock.lock();
10634
10635	/* preserve existing error info */
10636	ErrorInfoKeeper eik;
10637
10638	/* restore the machine state */
10639	setMachineState (aTask.state);
10640	updateMachineStateOnClient();
10641
10642	if (settingsChanged)
10643	saveSettings (SaveS_InformCallbacksAnyway);
10644	}
10645
10646	/* set the result (this will try to fetch current error info on failure) */
10647	aTask.progress->notifyComplete (rc);
10648	}
10649
10650	if (SUCCEEDED (rc))
10651	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
10652
10653	LogFlowThisFunc (("Done discarding snapshot (rc=%08X)\n", rc));
10654	LogFlowThisFuncLeave();
10655	}
10656
10657	/**
10658	* Discard current state task handler. Must be called only by
10659	* DiscardCurrentStateTask::handler()!
10660	*
10661	* @note Locks mParent + this object for writing.
10662	*/
10663	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
10664	{
10665	LogFlowThisFuncEnter();
10666
10667	AutoCaller autoCaller (this);
10668
10669	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10670	if (!autoCaller.isOk())
10671	{
10672	/* we might have been uninitialized because the session was accidentally
10673	* closed by the client, so don't assert */
10674	aTask.progress->notifyComplete (
10675	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10676	tr ("The session has been accidentally closed"));
10677
10678	LogFlowThisFuncLeave();
10679	return;
10680	}
10681
10682	/* saveSettings() needs mParent lock */
10683	AutoWriteLock vboxLock (mParent);
10684
10685	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10686	* provide an AutoWriteLock argument that lets create a non-locking
10687	* instance */
10688	vboxLock.unlock();
10689
10690	AutoWriteLock alock (this);
10691
10692	/* discard all current changes to mUserData (name, OSType etc.) (note that
10693	* the machine is powered off, so there is no need to inform the direct
10694	* session) */
10695	if (isModified())
10696	rollback (false /* aNotify */);
10697
10698	HRESULT rc = S_OK;
10699
10700	bool errorInSubtask = false;
10701	bool stateRestored = false;
10702
10703	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
10704
10705	try
10706	{
10707	/* discard the saved state file if the machine was Saved prior to this
10708	* operation */
10709	if (aTask.state == MachineState_Saved)
10710	{
10711	Assert (!mSSData->mStateFilePath.isEmpty());
10712	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10713	mSSData->mStateFilePath.setNull();
10714	aTask.modifyLastState (MachineState_PoweredOff);
10715	rc = saveStateSettings (SaveSTS_StateFilePath);
10716	CheckComRCThrowRC (rc);
10717	}
10718
10719	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
10720	{
10721	/* the "discard current snapshot and state" task is in action, the
10722	* current snapshot is not the last one. Discard the current
10723	* snapshot first */
10724
10725	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10726	subTask.subTask = true;
10727	discardSnapshotHandler (subTask);
10728
10729	AutoCaller progressCaller (aTask.progress);
10730	AutoReadLock progressLock (aTask.progress);
10731	if (aTask.progress->completed())
10732	{
10733	/* the progress can be completed by a subtask only if there was
10734	* a failure */
10735	rc = aTask.progress->resultCode();
10736	Assert (FAILED (rc));
10737	errorInSubtask = true;
10738	throw rc;
10739	}
10740	}
10741
10742	RTTIMESPEC snapshotTimeStamp;
10743	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
10744
10745	{
10746	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
10747	AutoReadLock snapshotLock (curSnapshot);
10748
10749	/* remember the timestamp of the snapshot we're restoring from */
10750	snapshotTimeStamp = curSnapshot->data().mTimeStamp;
10751
10752	/* copy all hardware data from the current snapshot */
10753	copyFrom (curSnapshot->data().mMachine);
10754
10755	LogFlowThisFunc (("Restoring hard disks from the snapshot...\n"));
10756
10757	/* restore the attachmends from the snapshot */
10758	mHDData.backup();
10759	mHDData->mAttachments =
10760	curSnapshot->data().mMachine->mHDData->mAttachments;
10761
10762	/* leave the locks before the potentially lengthy operation */
10763	snapshotLock.unlock();
10764	alock.leave();
10765
10766	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10767	aTask.progress,
10768	false /* aOnline */);
10769
10770	alock.enter();
10771	snapshotLock.lock();
10772
10773	CheckComRCThrowRC (rc);
10774
10775	/* Note: on success, current (old) hard disks will be
10776	* deassociated/deleted on #commit() called from #saveSettings() at
10777	* the end. On failure, newly created implicit diffs will be
10778	* deleted by #rollback() at the end. */
10779
10780	/* should not have a saved state file associated at this point */
10781	Assert (mSSData->mStateFilePath.isNull());
10782
10783	if (curSnapshot->stateFilePath())
10784	{
10785	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
10786
10787	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
10788	mUserData->mSnapshotFolderFull.raw(),
10789	RTPATH_DELIMITER, mData->mUuid.raw());
10790
10791	LogFlowThisFunc (("Copying saved state file from '%s' to '%s'...\n",
10792	snapStateFilePath.raw(), stateFilePath.raw()));
10793
10794	aTask.progress->setNextOperation(Bstr(tr("Restoring the execution state")),
10795	1); // weight
10796
10797	/* leave the lock before the potentially lengthy operation */
10798	snapshotLock.unlock();
10799	alock.leave();
10800
10801	/* copy the state file */
10802	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
10803	0, progressCallback, aTask.progress);
10804
10805	alock.enter();
10806	snapshotLock.lock();
10807
10808	if (RT_SUCCESS (vrc))
10809	{
10810	mSSData->mStateFilePath = stateFilePath;
10811	}
10812	else
10813	{
10814	throw setError (E_FAIL,
10815	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10816	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
10817	}
10818	}
10819	}
10820
10821	/* grab differencing hard disks from the old attachments that will
10822	* become unused and need to be auto-deleted */
10823
10824	std::list< ComObjPtr<HardDisk> > diffs;
10825
10826	for (HDData::AttachmentList::const_iterator
10827	it = mHDData.backedUpData()->mAttachments.begin();
10828	it != mHDData.backedUpData()->mAttachments.end(); ++ it)
10829	{
10830	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
10831
10832	/* while the hard disk is attached, the number of children or the
10833	* parent cannot change, so no lock */
10834	if (!hd->parent().isNull() && hd->children().size() == 0)
10835	diffs.push_back (hd);
10836	}
10837
10838	int saveFlags = 0;
10839
10840	if (aTask.discardCurrentSnapshot && isLastSnapshot)
10841	{
10842	/* commit changes to have unused diffs deassociated from this
10843	* machine before deletion (see below) */
10844	commit();
10845
10846	/* delete the unused diffs now (and uninit them) because discard
10847	* may fail otherwise (too many children of the hard disk to be
10848	* discarded) */
10849	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10850	it = diffs.begin(); it != diffs.end(); ++ it)
10851	{
10852	/// @todo for now, we ignore errors since we've already
10853	/// and therefore cannot fail. Later, we may want to report a
10854	/// warning through the Progress object
10855	HRESULT rc2 = (*it)->deleteStorageAndWait();
10856	if (SUCCEEDED (rc2))
10857	(*it)->uninit();
10858	}
10859
10860	/* prevent further deletion */
10861	diffs.clear();
10862
10863	/* discard the current snapshot and state task is in action, the
10864	* current snapshot is the last one. Discard the current snapshot
10865	* after discarding the current state. */
10866
10867	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10868	subTask.subTask = true;
10869	discardSnapshotHandler (subTask);
10870
10871	AutoCaller progressCaller (aTask.progress);
10872	AutoReadLock progressLock (aTask.progress);
10873	if (aTask.progress->completed())
10874	{
10875	/* the progress can be completed by a subtask only if there
10876	* was a failure */
10877	rc = aTask.progress->resultCode();
10878	Assert (FAILED (rc));
10879	errorInSubtask = true;
10880	}
10881
10882	/* we've committed already, so inform callbacks anyway to ensure
10883	* they don't miss some change */
10884	/// @todo NEWMEDIA check if we need this informCallbacks at all
10885	/// after updating discardCurrentSnapshot functionality
10886	saveFlags \|= SaveS_InformCallbacksAnyway;
10887	}
10888
10889	/* @todo saveSettings() below needs a VirtualBox write lock and we need
10890	* to leave this object's lock to do this to follow the {parent-child}
10891	* locking rule. This is the last chance to do that while we are still
10892	* in a protective state which allows us to temporarily leave the lock*/
10893	alock.unlock();
10894	vboxLock.lock();
10895	alock.lock();
10896
10897	/* we have already discarded the current state, so set the execution
10898	* state accordingly no matter of the discard snapshot result */
10899	if (mSSData->mStateFilePath)
10900	setMachineState (MachineState_Saved);
10901	else
10902	setMachineState (MachineState_PoweredOff);
10903
10904	updateMachineStateOnClient();
10905	stateRestored = true;
10906
10907	/* assign the timestamp from the snapshot */
10908	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
10909	mData->mLastStateChange = snapshotTimeStamp;
10910
10911	/* save all settings, reset the modified flag and commit. Note that we
10912	* do so even if the subtask failed (errorInSubtask=true) because we've
10913	* already committed machine data and deleted old diffs before
10914	* discarding the current snapshot so there is no way to rollback */
10915	HRESULT rc2 = saveSettings (SaveS_ResetCurStateModified \| saveFlags);
10916
10917	/// @todo NEWMEDIA return multiple errors
10918	if (errorInSubtask)
10919	throw rc;
10920
10921	rc = rc2;
10922
10923	if (SUCCEEDED (rc))
10924	{
10925	/* now, delete the unused diffs (only on success!) and uninit them*/
10926	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10927	it = diffs.begin(); it != diffs.end(); ++ it)
10928	{
10929	/// @todo for now, we ignore errors since we've already
10930	/// discarded and therefore cannot fail. Later, we may want to
10931	/// report a warning through the Progress object
10932	HRESULT rc2 = (*it)->deleteStorageAndWait();
10933	if (SUCCEEDED (rc2))
10934	(*it)->uninit();
10935	}
10936	}
10937	}
10938	catch (HRESULT aRC) { rc = aRC; }
10939
10940	if (FAILED (rc))
10941	{
10942	/* preserve existing error info */
10943	ErrorInfoKeeper eik;
10944
10945	if (!errorInSubtask)
10946	{
10947	/* undo all changes on failure unless the subtask has done so */
10948	rollback (false /* aNotify */);
10949	}
10950
10951	if (!stateRestored)
10952	{
10953	/* restore the machine state */
10954	setMachineState (aTask.state);
10955	updateMachineStateOnClient();
10956	}
10957	}
10958
10959	if (!errorInSubtask)
10960	{
10961	/* set the result (this will try to fetch current error info on failure) */
10962	aTask.progress->notifyComplete (rc);
10963	}
10964
10965	if (SUCCEEDED (rc))
10966	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
10967
10968	LogFlowThisFunc (("Done discarding current state (rc=%08X)\n", rc));
10969
10970	LogFlowThisFuncLeave();
10971	}
10972
10973	/**
10974	* Locks the attached media.
10975	*
10976	* All attached hard disks are locked for writing and DVD/floppy are locked for
10977	* reading. Parents of attached hard disks (if any) are locked for reading.
10978	*
10979	* This method also performs accessibility check of all media it locks: if some
10980	* media is inaccessible, the method will return a failure and a bunch of
10981	* extended error info objects per each inaccessible medium.
10982	*
10983	* Note that this method is atomic: if it returns a success, all media are
10984	* locked as described above; on failure no media is locked at all (all
10985	* succeeded individual locks will be undone).
10986	*
10987	* This method is intended to be called when the machine is in Starting or
10988	* Restoring state and asserts otherwise.
10989	*
10990	* The locks made by this method must be undone by calling #unlockMedia() when
10991	* no more needed.
10992	*/
10993	HRESULT SessionMachine::lockMedia()
10994	{
10995	AutoCaller autoCaller (this);
10996	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10997
10998	AutoWriteLock alock (this);
10999
11000	AssertReturn (mData->mMachineState == MachineState_Starting \|\|
11001	mData->mMachineState == MachineState_Restoring, E_FAIL);
11002
11003	typedef std::list <ComPtr <IMedium> > MediaList;
11004	MediaList mediaToCheck;
11005	MediaState_T mediaState;
11006
11007	try
11008	{
11009	HRESULT rc = S_OK;
11010
11011	/* lock hard disks */
11012	for (HDData::AttachmentList::const_iterator it =
11013	mHDData->mAttachments.begin();
11014	it != mHDData->mAttachments.end(); ++ it)
11015	{
11016	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
11017
11018	bool first = true;
11019
11020	/** @todo split out the media locking, and put it into
11021	* HardDiskImpl.cpp, as it needs this functionality too. */
11022	while (!hd.isNull())
11023	{
11024	if (first)
11025	{
11026	rc = hd->LockWrite (&mediaState);
11027	CheckComRCThrowRC (rc);
11028
11029	mData->mSession.mLockedMedia.push_back (
11030	Data::Session::LockedMedia::value_type (
11031	ComPtr <IHardDisk> (hd), true));
11032
11033	first = false;
11034	}
11035	else
11036	{
11037	rc = hd->LockRead (&mediaState);
11038	CheckComRCThrowRC (rc);
11039
11040	mData->mSession.mLockedMedia.push_back (
11041	Data::Session::LockedMedia::value_type (
11042	ComPtr <IHardDisk> (hd), false));
11043	}
11044
11045	if (mediaState == MediaState_Inaccessible)
11046	mediaToCheck.push_back (ComPtr <IHardDisk> (hd));
11047
11048	/* no locks or callers here since there should be no way to
11049	* change the hard disk parent at this point (as it is still
11050	* attached to the machine) */
11051	hd = hd->parent();
11052	}
11053	}
11054
11055	/* lock the DVD image for reading if mounted */
11056	{
11057	AutoReadLock driveLock (mDVDDrive);
11058	if (mDVDDrive->data()->state == DriveState_ImageMounted)
11059	{
11060	ComObjPtr <DVDImage> image = mDVDDrive->data()->image;
11061
11062	rc = image->LockRead (&mediaState);
11063	CheckComRCThrowRC (rc);
11064
11065	mData->mSession.mLockedMedia.push_back (
11066	Data::Session::LockedMedia::value_type (
11067	ComPtr <IDVDImage> (image), false));
11068
11069	if (mediaState == MediaState_Inaccessible)
11070	mediaToCheck.push_back (ComPtr <IDVDImage> (image));
11071	}
11072	}
11073
11074	/* lock the floppy image for reading if mounted */
11075	{
11076	AutoReadLock driveLock (mFloppyDrive);
11077	if (mFloppyDrive->data()->state == DriveState_ImageMounted)
11078	{
11079	ComObjPtr <FloppyImage> image = mFloppyDrive->data()->image;
11080
11081	rc = image->LockRead (&mediaState);
11082	CheckComRCThrowRC (rc);
11083
11084	mData->mSession.mLockedMedia.push_back (
11085	Data::Session::LockedMedia::value_type (
11086	ComPtr <IFloppyImage> (image), false));
11087
11088	if (mediaState == MediaState_Inaccessible)
11089	mediaToCheck.push_back (ComPtr <IFloppyImage> (image));
11090	}
11091	}
11092
11093	/* SUCCEEDED locking all media, now check accessibility */
11094
11095	ErrorInfoKeeper eik (true /* aIsNull */);
11096	MultiResult mrc (S_OK);
11097
11098	/* perform a check of inaccessible media deferred above */
11099	for (MediaList::const_iterator
11100	it = mediaToCheck.begin();
11101	it != mediaToCheck.end(); ++ it)
11102	{
11103	MediaState_T mediaState;
11104	rc = (*it)->COMGETTER(State) (&mediaState);
11105	CheckComRCThrowRC (rc);
11106
11107	Assert (mediaState == MediaState_LockedRead \|\|
11108	mediaState == MediaState_LockedWrite);
11109
11110	/* Note that we locked the medium already, so use the error
11111	* value to see if there was an accessibility failure */
11112
11113	Bstr error;
11114	rc = (*it)->COMGETTER(LastAccessError) (error.asOutParam());
11115	CheckComRCThrowRC (rc);
11116
11117	if (!error.isNull())
11118	{
11119	Bstr loc;
11120	rc = (*it)->COMGETTER(Location) (loc.asOutParam());
11121	CheckComRCThrowRC (rc);
11122
11123	/* collect multiple errors */
11124	eik.restore();
11125
11126	/* be in sync with MediumBase::setStateError() */
11127	Assert (!error.isEmpty());
11128	mrc = setError (E_FAIL,
11129	tr ("Medium '%ls' is not accessible. %ls"),
11130	loc.raw(), error.raw());
11131
11132	eik.fetch();
11133	}
11134	}
11135
11136	eik.restore();
11137	CheckComRCThrowRC ((HRESULT) mrc);
11138	}
11139	catch (HRESULT aRC)
11140	{
11141	/* Unlock all locked media on failure */
11142	unlockMedia();
11143	return aRC;
11144	}
11145
11146	return S_OK;
11147	}
11148
11149	/**
11150	* Undoes the locks made by by #lockMedia().
11151	*/
11152	void SessionMachine::unlockMedia()
11153	{
11154	AutoCaller autoCaller (this);
11155	AssertComRCReturnVoid (autoCaller.rc());
11156
11157	AutoWriteLock alock (this);
11158
11159	/* we may be holding important error info on the current thread;
11160	* preserve it */
11161	ErrorInfoKeeper eik;
11162
11163	HRESULT rc = S_OK;
11164
11165	for (Data::Session::LockedMedia::const_iterator
11166	it = mData->mSession.mLockedMedia.begin();
11167	it != mData->mSession.mLockedMedia.end(); ++ it)
11168	{
11169	MediaState_T state;
11170	if (it->second)
11171	rc = it->first->UnlockWrite (&state);
11172	else
11173	rc = it->first->UnlockRead (&state);
11174
11175	/* The second can happen if an object was re-locked in
11176	* Machine::fixupHardDisks(). The last can happen when e.g a DVD/Floppy
11177	* image was unmounted at runtime. */
11178	Assert (SUCCEEDED (rc) \|\| state == MediaState_LockedRead \|\| state == MediaState_Created);
11179	}
11180
11181	mData->mSession.mLockedMedia.clear();
11182	}
11183
11184	/**
11185	* Helper to change the machine state (reimplementation).
11186	*
11187	* @note Locks this object for writing.
11188	*/
11189	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
11190	{
11191	LogFlowThisFuncEnter();
11192	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
11193
11194	AutoCaller autoCaller (this);
11195	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11196
11197	AutoWriteLock alock (this);
11198
11199	MachineState_T oldMachineState = mData->mMachineState;
11200
11201	AssertMsgReturn (oldMachineState != aMachineState,
11202	("oldMachineState=%d, aMachineState=%d\n",
11203	oldMachineState, aMachineState), E_FAIL);
11204
11205	HRESULT rc = S_OK;
11206
11207	int stsFlags = 0;
11208	bool deleteSavedState = false;
11209
11210	/* detect some state transitions */
11211
11212	if ((oldMachineState == MachineState_Saved &&
11213	aMachineState == MachineState_Restoring) \|\|
11214	(oldMachineState < MachineState_Running /* any other OFF state */ &&
11215	aMachineState == MachineState_Starting))
11216	{
11217	/* The EMT thread is about to start */
11218
11219	/* Nothing to do here for now... */
11220
11221	/// @todo NEWMEDIA don't let mDVDDrive and other children
11222	/// change anything when in the Starting/Restoring state
11223	}
11224	else
11225	if (oldMachineState >= MachineState_Running &&
11226	oldMachineState != MachineState_Discarding &&
11227	oldMachineState != MachineState_SettingUp &&
11228	aMachineState < MachineState_Running &&
11229	/* ignore PoweredOff->Saving->PoweredOff transition when taking a
11230	* snapshot */
11231	(mSnapshotData.mSnapshot.isNull() \|\|
11232	mSnapshotData.mLastState >= MachineState_Running))
11233	{
11234	/* The EMT thread has just stopped, unlock attached media. Note that as
11235	* opposed to locking that is done from Console, we do unlocking here
11236	* because the VM process may have aborted before having a chance to
11237	* properly unlock all media it locked. */
11238
11239	unlockMedia();
11240	}
11241
11242	if (oldMachineState == MachineState_Restoring)
11243	{
11244	if (aMachineState != MachineState_Saved)
11245	{
11246	/*
11247	* delete the saved state file once the machine has finished
11248	* restoring from it (note that Console sets the state from
11249	* Restoring to Saved if the VM couldn't restore successfully,
11250	* to give the user an ability to fix an error and retry --
11251	* we keep the saved state file in this case)
11252	*/
11253	deleteSavedState = true;
11254	}
11255	}
11256	else
11257	if (oldMachineState == MachineState_Saved &&
11258	(aMachineState == MachineState_PoweredOff \|\|
11259	aMachineState == MachineState_Aborted))
11260	{
11261	/*
11262	* delete the saved state after Console::DiscardSavedState() is called
11263	* or if the VM process (owning a direct VM session) crashed while the
11264	* VM was Saved
11265	*/
11266
11267	/// @todo (dmik)
11268	// Not sure that deleting the saved state file just because of the
11269	// client death before it attempted to restore the VM is a good
11270	// thing. But when it crashes we need to go to the Aborted state
11271	// which cannot have the saved state file associated... The only
11272	// way to fix this is to make the Aborted condition not a VM state
11273	// but a bool flag: i.e., when a crash occurs, set it to true and
11274	// change the state to PoweredOff or Saved depending on the
11275	// saved state presence.
11276
11277	deleteSavedState = true;
11278	mData->mCurrentStateModified = TRUE;
11279	stsFlags \|= SaveSTS_CurStateModified;
11280	}
11281
11282	if (aMachineState == MachineState_Starting \|\|
11283	aMachineState == MachineState_Restoring)
11284	{
11285	/* set the current state modified flag to indicate that the current
11286	* state is no more identical to the state in the
11287	* current snapshot */
11288	if (!mData->mCurrentSnapshot.isNull())
11289	{
11290	mData->mCurrentStateModified = TRUE;
11291	stsFlags \|= SaveSTS_CurStateModified;
11292	}
11293	}
11294
11295	if (deleteSavedState)
11296	{
11297	if (mRemoveSavedState)
11298	{
11299	Assert (!mSSData->mStateFilePath.isEmpty());
11300	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
11301	}
11302	mSSData->mStateFilePath.setNull();
11303	stsFlags \|= SaveSTS_StateFilePath;
11304	}
11305
11306	/* redirect to the underlying peer machine */
11307	mPeer->setMachineState (aMachineState);
11308
11309	if (aMachineState == MachineState_PoweredOff \|\|
11310	aMachineState == MachineState_Aborted \|\|
11311	aMachineState == MachineState_Saved)
11312	{
11313	/* the machine has stopped execution
11314	* (or the saved state file was adopted) */
11315	stsFlags \|= SaveSTS_StateTimeStamp;
11316	}
11317
11318	if ((oldMachineState == MachineState_PoweredOff \|\|
11319	oldMachineState == MachineState_Aborted) &&
11320	aMachineState == MachineState_Saved)
11321	{
11322	/* the saved state file was adopted */
11323	Assert (!mSSData->mStateFilePath.isNull());
11324	stsFlags \|= SaveSTS_StateFilePath;
11325	}
11326
11327	rc = saveStateSettings (stsFlags);
11328
11329	if ((oldMachineState != MachineState_PoweredOff &&
11330	oldMachineState != MachineState_Aborted) &&
11331	(aMachineState == MachineState_PoweredOff \|\|
11332	aMachineState == MachineState_Aborted))
11333	{
11334	/* we've been shut down for any reason */
11335	/* no special action so far */
11336	}
11337
11338	LogFlowThisFunc (("rc=%08X\n", rc));
11339	LogFlowThisFuncLeave();
11340	return rc;
11341	}
11342
11343	/**
11344	* Sends the current machine state value to the VM process.
11345	*
11346	* @note Locks this object for reading, then calls a client process.
11347	*/
11348	HRESULT SessionMachine::updateMachineStateOnClient()
11349	{
11350	AutoCaller autoCaller (this);
11351	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11352
11353	ComPtr <IInternalSessionControl> directControl;
11354	{
11355	AutoReadLock alock (this);
11356	AssertReturn (!!mData, E_FAIL);
11357	directControl = mData->mSession.mDirectControl;
11358
11359	/* directControl may be already set to NULL here in #OnSessionEnd()
11360	* called too early by the direct session process while there is still
11361	* some operation (like discarding the snapshot) in progress. The client
11362	* process in this case is waiting inside Session::close() for the
11363	* "end session" process object to complete, while #uninit() called by
11364	* #checkForDeath() on the Watcher thread is waiting for the pending
11365	* operation to complete. For now, we accept this inconsitent behavior
11366	* and simply do nothing here. */
11367
11368	if (mData->mSession.mState == SessionState_Closing)
11369	return S_OK;
11370
11371	AssertReturn (!directControl.isNull(), E_FAIL);
11372	}
11373
11374	return directControl->UpdateMachineState (mData->mMachineState);
11375	}
11376
11377	/* static */
11378	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD /* thread /, void pvUser)
11379	{
11380	AssertReturn (pvUser, VERR_INVALID_POINTER);
11381
11382	Task task = static_cast <Task > (pvUser);
11383	task->handler();
11384
11385	// it's our responsibility to delete the task
11386	delete task;
11387
11388	return 0;
11389	}
11390
11391	/////////////////////////////////////////////////////////////////////////////
11392	// SnapshotMachine class
11393	/////////////////////////////////////////////////////////////////////////////
11394
11395	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
11396
11397	HRESULT SnapshotMachine::FinalConstruct()
11398	{
11399	LogFlowThisFunc (("\n"));
11400
11401	/* set the proper type to indicate we're the SnapshotMachine instance */
11402	unconst (mType) = IsSnapshotMachine;
11403
11404	return S_OK;
11405	}
11406
11407	void SnapshotMachine::FinalRelease()
11408	{
11409	LogFlowThisFunc (("\n"));
11410
11411	uninit();
11412	}
11413
11414	/**
11415	* Initializes the SnapshotMachine object when taking a snapshot.
11416	*
11417	* @param aSessionMachine machine to take a snapshot from
11418	* @param aSnapshotId snapshot ID of this snapshot machine
11419	* @param aStateFilePath file where the execution state will be later saved
11420	* (or NULL for the offline snapshot)
11421	*
11422	* @note The aSessionMachine must be locked for writing.
11423	*/
11424	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
11425	IN_GUID aSnapshotId,
11426	IN_BSTR aStateFilePath)
11427	{
11428	LogFlowThisFuncEnter();
11429	LogFlowThisFunc (("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
11430
11431	AssertReturn (aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
11432
11433	/* Enclose the state transition NotReady->InInit->Ready */
11434	AutoInitSpan autoInitSpan (this);
11435	AssertReturn (autoInitSpan.isOk(), E_FAIL);
11436
11437	AssertReturn (aSessionMachine->isWriteLockOnCurrentThread(), E_FAIL);
11438
11439	mSnapshotId = aSnapshotId;
11440
11441	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
11442	unconst (mPeer) = aSessionMachine->mPeer;
11443	/* share the parent pointer */
11444	unconst (mParent) = mPeer->mParent;
11445
11446	/* take the pointer to Data to share */
11447	mData.share (mPeer->mData);
11448
11449	/* take the pointer to UserData to share (our UserData must always be the
11450	* same as Machine's data) */
11451	mUserData.share (mPeer->mUserData);
11452	/* make a private copy of all other data (recent changes from SessionMachine) */
11453	mHWData.attachCopy (aSessionMachine->mHWData);
11454	mHDData.attachCopy (aSessionMachine->mHDData);
11455
11456	/* SSData is always unique for SnapshotMachine */
11457	mSSData.allocate();
11458	mSSData->mStateFilePath = aStateFilePath;
11459
11460	HRESULT rc = S_OK;
11461
11462	/* create copies of all shared folders (mHWData after attiching a copy
11463	* contains just references to original objects) */
11464	for (HWData::SharedFolderList::iterator
11465	it = mHWData->mSharedFolders.begin();
11466	it != mHWData->mSharedFolders.end();
11467	++ it)
11468	{
11469	ComObjPtr <SharedFolder> folder;
11470	folder.createObject();
11471	rc = folder->initCopy (this, *it);
11472	CheckComRCReturnRC (rc);
11473	*it = folder;
11474	}
11475
11476	/* associate hard disks with the snapshot
11477	* (Machine::uninitDataAndChildObjects() will deassociate at destruction) */
11478	for (HDData::AttachmentList::const_iterator
11479	it = mHDData->mAttachments.begin();
11480	it != mHDData->mAttachments.end();
11481	++ it)
11482	{
11483	rc = (*it)->hardDisk()->attachTo (mData->mUuid, mSnapshotId);
11484	AssertComRC (rc);
11485	}
11486
11487	/* create copies of all storage controllers (mStorageControllerData
11488	* after attaching a copy contains just references to original objects) */
11489	mStorageControllers.allocate();
11490	for (StorageControllerList::const_iterator
11491	it = aSessionMachine->mStorageControllers->begin();
11492	it != aSessionMachine->mStorageControllers->end();
11493	++ it)
11494	{
11495	ComObjPtr <StorageController> ctrl;
11496	ctrl.createObject();
11497	ctrl->initCopy (this, *it);
11498	mStorageControllers->push_back(ctrl);
11499	}
11500
11501	/* create all other child objects that will be immutable private copies */
11502
11503	unconst (mBIOSSettings).createObject();
11504	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
11505
11506	#ifdef VBOX_WITH_VRDP
11507	unconst (mVRDPServer).createObject();
11508	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
11509	#endif
11510
11511	unconst (mDVDDrive).createObject();
11512	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
11513
11514	unconst (mFloppyDrive).createObject();
11515	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
11516
11517	unconst (mAudioAdapter).createObject();
11518	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
11519
11520	unconst (mUSBController).createObject();
11521	mUSBController->initCopy (this, mPeer->mUSBController);
11522
11523	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11524	{
11525	unconst (mNetworkAdapters [slot]).createObject();
11526	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
11527	}
11528
11529	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11530	{
11531	unconst (mSerialPorts [slot]).createObject();
11532	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
11533	}
11534
11535	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11536	{
11537	unconst (mParallelPorts [slot]).createObject();
11538	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
11539	}
11540
11541	/* Confirm a successful initialization when it's the case */
11542	autoInitSpan.setSucceeded();
11543
11544	LogFlowThisFuncLeave();
11545	return S_OK;
11546	}
11547
11548	/**
11549	* Initializes the SnapshotMachine object when loading from the settings file.
11550	*
11551	* @param aMachine machine the snapshot belngs to
11552	* @param aHWNode <Hardware> node
11553	* @param aHDAsNode <HardDiskAttachments> node
11554	* @param aSnapshotId snapshot ID of this snapshot machine
11555	* @param aStateFilePath file where the execution state is saved
11556	* (or NULL for the offline snapshot)
11557	*
11558	* @note Doesn't lock anything.
11559	*/
11560	HRESULT SnapshotMachine::init (Machine *aMachine,
11561	const settings::Key &aHWNode,
11562	const settings::Key &aHDAsNode,
11563	IN_GUID aSnapshotId, IN_BSTR aStateFilePath)
11564	{
11565	LogFlowThisFuncEnter();
11566	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
11567
11568	AssertReturn (aMachine && !aHWNode.isNull() && !aHDAsNode.isNull() &&
11569	!Guid (aSnapshotId).isEmpty(),
11570	E_INVALIDARG);
11571
11572	/* Enclose the state transition NotReady->InInit->Ready */
11573	AutoInitSpan autoInitSpan (this);
11574	AssertReturn (autoInitSpan.isOk(), E_FAIL);
11575
11576	/* Don't need to lock aMachine when VirtualBox is starting up */
11577
11578	mSnapshotId = aSnapshotId;
11579
11580	/* memorize the primary Machine instance */
11581	unconst (mPeer) = aMachine;
11582	/* share the parent pointer */
11583	unconst (mParent) = mPeer->mParent;
11584
11585	/* take the pointer to Data to share */
11586	mData.share (mPeer->mData);
11587	/*
11588	* take the pointer to UserData to share
11589	* (our UserData must always be the same as Machine's data)
11590	*/
11591	mUserData.share (mPeer->mUserData);
11592	/* allocate private copies of all other data (will be loaded from settings) */
11593	mHWData.allocate();
11594	mHDData.allocate();
11595	mStorageControllers.allocate();
11596
11597	/* SSData is always unique for SnapshotMachine */
11598	mSSData.allocate();
11599	mSSData->mStateFilePath = aStateFilePath;
11600
11601	/* create all other child objects that will be immutable private copies */
11602
11603	unconst (mBIOSSettings).createObject();
11604	mBIOSSettings->init (this);
11605
11606	#ifdef VBOX_WITH_VRDP
11607	unconst (mVRDPServer).createObject();
11608	mVRDPServer->init (this);
11609	#endif
11610
11611	unconst (mDVDDrive).createObject();
11612	mDVDDrive->init (this);
11613
11614	unconst (mFloppyDrive).createObject();
11615	mFloppyDrive->init (this);
11616
11617	unconst (mAudioAdapter).createObject();
11618	mAudioAdapter->init (this);
11619
11620	unconst (mUSBController).createObject();
11621	mUSBController->init (this);
11622
11623	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11624	{
11625	unconst (mNetworkAdapters [slot]).createObject();
11626	mNetworkAdapters [slot]->init (this, slot);
11627	}
11628
11629	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11630	{
11631	unconst (mSerialPorts [slot]).createObject();
11632	mSerialPorts [slot]->init (this, slot);
11633	}
11634
11635	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11636	{
11637	unconst (mParallelPorts [slot]).createObject();
11638	mParallelPorts [slot]->init (this, slot);
11639	}
11640
11641	/* load hardware and harddisk settings */
11642
11643	HRESULT rc = loadHardware (aHWNode);
11644	if (SUCCEEDED (rc))
11645	rc = loadStorageControllers (aHDAsNode, true /* aRegistered */, &mSnapshotId);
11646
11647	if (SUCCEEDED (rc))
11648	{
11649	/* commit all changes made during the initialization */
11650	commit();
11651	}
11652
11653	/* Confirm a successful initialization when it's the case */
11654	if (SUCCEEDED (rc))
11655	autoInitSpan.setSucceeded();
11656
11657	LogFlowThisFuncLeave();
11658	return rc;
11659	}
11660
11661	/**
11662	* Uninitializes this SnapshotMachine object.
11663	*/
11664	void SnapshotMachine::uninit()
11665	{
11666	LogFlowThisFuncEnter();
11667
11668	/* Enclose the state transition Ready->InUninit->NotReady */
11669	AutoUninitSpan autoUninitSpan (this);
11670	if (autoUninitSpan.uninitDone())
11671	return;
11672
11673	uninitDataAndChildObjects();
11674
11675	/* free the essential data structure last */
11676	mData.free();
11677
11678	unconst (mParent).setNull();
11679	unconst (mPeer).setNull();
11680
11681	LogFlowThisFuncLeave();
11682	}
11683
11684	// util::Lockable interface
11685	////////////////////////////////////////////////////////////////////////////////
11686
11687	/**
11688	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
11689	* with the primary Machine instance (mPeer).
11690	*/
11691	RWLockHandle *SnapshotMachine::lockHandle() const
11692	{
11693	AssertReturn (!mPeer.isNull(), NULL);
11694	return mPeer->lockHandle();
11695	}
11696
11697	// public methods only for internal purposes
11698	////////////////////////////////////////////////////////////////////////////////
11699
11700	/**
11701	* Called by the snapshot object associated with this SnapshotMachine when
11702	* snapshot data such as name or description is changed.
11703	*
11704	* @note Locks this object for writing.
11705	*/
11706	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
11707	{
11708	AutoWriteLock alock (this);
11709
11710	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
11711
11712	/* inform callbacks */
11713	mParent->onSnapshotChange (mData->mUuid, aSnapshot->data().mId);
11714
11715	return S_OK;
11716	}
11717	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 20958

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